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Comparing libev/ev.c (file contents):
Revision 1.243 by root, Fri May 9 15:52:13 2008 UTC vs.
Revision 1.427 by root, Sun May 6 19:29:59 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 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 modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 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 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 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
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
111# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
114# endif 136# endif
115 137
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
122# endif 145# endif
123 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
130# endif 154# endif
131 155
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
132#endif 163# endif
164
165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# 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
152#endif 197#endif
153 198
154#ifndef _WIN32 199#ifndef _WIN32
155# include <sys/time.h> 200# include <sys/time.h>
156# include <sys/wait.h> 201# include <sys/wait.h>
157# include <unistd.h> 202# include <unistd.h>
158#else 203#else
204# include <io.h>
159# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 206# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
163# endif 209# endif
210# undef EV_AVOID_STDIO
164#endif 211#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
165 220
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
167 222
223/* try to deduce the maximum number of signals on this platform */
224#if defined EV_NSIG
225/* use what's provided */
226#elif defined NSIG
227# define EV_NSIG (NSIG)
228#elif defined _NSIG
229# define EV_NSIG (_NSIG)
230#elif defined SIGMAX
231# define EV_NSIG (SIGMAX+1)
232#elif defined SIG_MAX
233# define EV_NSIG (SIG_MAX+1)
234#elif defined _SIG_MAX
235# define EV_NSIG (_SIG_MAX+1)
236#elif defined MAXSIG
237# define EV_NSIG (MAXSIG+1)
238#elif defined MAX_SIG
239# define EV_NSIG (MAX_SIG+1)
240#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else
245# error "unable to find value for NSIG, please report"
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
254
255#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else
259# define EV_USE_CLOCK_SYSCALL 0
260# endif
261#endif
262
168#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
265# define EV_USE_MONOTONIC EV_FEATURE_OS
266# else
169# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
268# endif
170#endif 269#endif
171 270
172#ifndef EV_USE_REALTIME 271#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 273#endif
175 274
176#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
276# if _POSIX_C_SOURCE >= 199309L
277# define EV_USE_NANOSLEEP EV_FEATURE_OS
278# else
177# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
280# endif
178#endif 281#endif
179 282
180#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 285#endif
183 286
184#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
185# ifdef _WIN32 288# ifdef _WIN32
186# define EV_USE_POLL 0 289# define EV_USE_POLL 0
187# else 290# else
188# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 292# endif
190#endif 293#endif
191 294
192#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 298# else
196# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
197# endif 300# endif
198#endif 301#endif
199 302
… …
205# define EV_USE_PORT 0 308# define EV_USE_PORT 0
206#endif 309#endif
207 310
208#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 314# else
212# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
213# endif 316# endif
214#endif 317#endif
215 318
216#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 321#endif
223 322
224#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 325#endif
231 326
232#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 330# else
236# define EV_USE_EVENTFD 0 331# define EV_USE_EVENTFD 0
237# endif 332# endif
238#endif 333#endif
239 334
335#ifndef EV_USE_SIGNALFD
336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
337# define EV_USE_SIGNALFD EV_FEATURE_OS
338# else
339# define EV_USE_SIGNALFD 0
340# endif
341#endif
342
343#if 0 /* debugging */
344# define EV_VERIFY 3
345# define EV_USE_4HEAP 1
346# define EV_HEAP_CACHE_AT 1
347#endif
348
349#ifndef EV_VERIFY
350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
351#endif
352
240#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
241# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
242#endif 355#endif
243 356
244#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
245# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif
360
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL
364# include <sys/syscall.h>
365# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1
369# else
370# undef EV_USE_CLOCK_SYSCALL
371# define EV_USE_CLOCK_SYSCALL 0
372# endif
246#endif 373#endif
247 374
248/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 375/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
249 382
250#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
251# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
252# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
253#endif 386#endif
… …
261# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
262# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
263#endif 396#endif
264 397
265#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
266# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
267# include <sys/select.h> 401# include <sys/select.h>
268# endif 402# endif
269#endif 403#endif
270 404
271#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
406# include <sys/statfs.h>
272# include <sys/inotify.h> 407# include <sys/inotify.h>
408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0
412# endif
273#endif 413#endif
274 414
275#if EV_SELECT_IS_WINSOCKET 415#if EV_SELECT_IS_WINSOCKET
276# include <winsock.h> 416# include <winsock.h>
277#endif 417#endif
278 418
279#if EV_USE_EVENTFD 419#if EV_USE_EVENTFD
280/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
281# include <stdint.h> 421# include <stdint.h>
282# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
283extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
284# endif 424# endif
285int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
286# ifdef __cplusplus 426# ifdef O_CLOEXEC
287} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
288# endif 431# endif
432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
433#endif
434
435#if EV_USE_SIGNALFD
436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
437# include <stdint.h>
438# ifndef SFD_NONBLOCK
439# define SFD_NONBLOCK O_NONBLOCK
440# endif
441# ifndef SFD_CLOEXEC
442# ifdef O_CLOEXEC
443# define SFD_CLOEXEC O_CLOEXEC
444# else
445# define SFD_CLOEXEC 02000000
446# endif
447# endif
448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
449
450struct signalfd_siginfo
451{
452 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)];
454};
289#endif 455#endif
290 456
291/**/ 457/**/
292 458
459#if EV_VERIFY >= 3
460# define EV_FREQUENT_CHECK ev_verify (EV_A)
461#else
462# define EV_FREQUENT_CHECK do { } while (0)
463#endif
464
293/* 465/*
294 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
295 * It is added to ev_rt_now when scheduling periodics
296 * to ensure progress, time-wise, even when rounding
297 * errors are against us.
298 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
299 * Better solutions welcome.
300 */ 468 */
301#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
302 471
303#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
304#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
305/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
306 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
307#if __GNUC__ >= 4 519 #if __GNUC__
308# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
309# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
310#else 526#else
311# define expect(expr,value) (expr) 527 #include <inttypes.h>
312# define noinline
313# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
314# define inline
315# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
316#endif 542 #endif
543#endif
317 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
586 #endif
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
600 #elif defined _WIN32
601 #include <WinNT.h>
602 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
603 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
604 #include <mbarrier.h>
605 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
606 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
607 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
608 #elif __xlC__
609 #define ECB_MEMORY_FENCE __sync ()
610 #endif
611#endif
612
613#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS
615 /*
616 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler
619 * OR provide pthread.h and link against the posix thread library
620 * of your system.
621 */
622 #include <pthread.h>
623 #define ECB_NEEDS_PTHREADS 1
624 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
625
626 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
627 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
628 #endif
629#endif
630
631#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
633#endif
634
635#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif
638
639/*****************************************************************************/
640
641#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643#if __cplusplus
644 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__
647#elif ECB_C99
648 #define ecb_inline static inline
649#else
650 #define ecb_inline static
651#endif
652
653#if ECB_GCC_VERSION(3,3)
654 #define ecb_restrict __restrict__
655#elif ECB_C99
656 #define ecb_restrict restrict
657#else
658 #define ecb_restrict
659#endif
660
661typedef int ecb_bool;
662
663#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
667
668#define ecb_function_ ecb_inline
669
670#if ECB_GCC_VERSION(3,1)
671 #define ecb_attribute(attrlist) __attribute__(attrlist)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality)
680#endif
681
682/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5)
684 #define ecb_decltype(x) __decltype(x)
685#elif ECB_GCC_VERSION(3,0)
686 #define ecb_decltype(x) __typeof(x)
687#endif
688
689#define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__))
691#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__))
694
695#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__))
699#else
700 #define ecb_artificial
701 #define ecb_hot
702 #define ecb_cold
703#endif
704
705/* put around conditional expressions if you are very sure that the */
706/* expression is mostly true or mostly false. note that these return */
707/* booleans, not the expression. */
318#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
319#define expect_true(expr) expect ((expr) != 0, 1) 709#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
710/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr)
713
714/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4)
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */
723#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
725 ecb_function_ int
726 ecb_ctz32 (uint32_t x)
727 {
728 int r = 0;
729
730 x &= ~x + 1; /* this isolates the lowest bit */
731
732#if ECB_branchless_on_i386
733 r += !!(x & 0xaaaaaaaa) << 0;
734 r += !!(x & 0xcccccccc) << 1;
735 r += !!(x & 0xf0f0f0f0) << 2;
736 r += !!(x & 0xff00ff00) << 3;
737 r += !!(x & 0xffff0000) << 4;
738#else
739 if (x & 0xaaaaaaaa) r += 1;
740 if (x & 0xcccccccc) r += 2;
741 if (x & 0xf0f0f0f0) r += 4;
742 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16;
744#endif
745
746 return r;
747 }
748
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
750 ecb_function_ int
751 ecb_ctz64 (uint64_t x)
752 {
753 int shift = x & 0xffffffffU ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift;
755 }
756
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
758 ecb_function_ int
759 ecb_popcount32 (uint32_t x)
760 {
761 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101;
765
766 return x >> 24;
767 }
768
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
770 ecb_function_ int ecb_ld32 (uint32_t x)
771 {
772 int r = 0;
773
774 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; }
779
780 return r;
781 }
782
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
784 ecb_function_ int ecb_ld64 (uint64_t x)
785 {
786 int r = 0;
787
788 if (x >> 32) { x >>= 32; r += 32; }
789
790 return r + ecb_ld32 (x);
791 }
792#endif
793
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796{
797 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799}
800
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
803{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8);
808
809 return x;
810}
811
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
814{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
819 x = ( x >> 16 ) | ( x << 16);
820
821 return x;
822}
823
824/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
827ecb_function_ int
828ecb_popcount64 (uint64_t x)
829{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831}
832
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
841
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850
851#if ECB_GCC_VERSION(4,3)
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
853 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x)
855#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
857 ecb_function_ uint16_t
858 ecb_bswap16 (uint16_t x)
859 {
860 return ecb_rotl16 (x, 8);
861 }
862
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
864 ecb_function_ uint32_t
865 ecb_bswap32 (uint32_t x)
866 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 }
869
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
871 ecb_function_ uint64_t
872 ecb_bswap64 (uint64_t x)
873 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 }
876#endif
877
878#if ECB_GCC_VERSION(4,5)
879 #define ecb_unreachable() __builtin_unreachable ()
880#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn;
883 ecb_inline void ecb_unreachable (void) { }
884#endif
885
886/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
888
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890ecb_inline unsigned char
891ecb_byteorder_helper (void)
892{
893 const uint32_t u = 0x11223344;
894 return *(unsigned char *)&u;
895}
896
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
901
902#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif
907
908#if __cplusplus
909 template<typename T>
910 static inline T ecb_div_rd (T val, T div)
911 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 }
914 template<typename T>
915 static inline T ecb_div_ru (T val, T div)
916 {
917 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
918 }
919#else
920 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
921 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
922#endif
923
924#if ecb_cplusplus_does_not_suck
925 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
926 template<typename T, int N>
927 static inline int ecb_array_length (const T (&arr)[N])
928 {
929 return N;
930 }
931#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif
934
935#endif
936
937/* ECB.H END */
938
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
940/* if your architecture doesn't need memory fences, e.g. because it is
941 * single-cpu/core, or if you use libev in a project that doesn't use libev
942 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
943 * libev, in which cases the memory fences become nops.
944 * alternatively, you can remove this #error and link against libpthread,
945 * which will then provide the memory fences.
946 */
947# error "memory fences not defined for your architecture, please report"
948#endif
949
950#ifndef ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE do { } while (0)
952# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
953# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
954#endif
955
956#define expect_false(cond) ecb_expect_false (cond)
957#define expect_true(cond) ecb_expect_true (cond)
958#define noinline ecb_noinline
959
320#define inline_size static inline 960#define inline_size ecb_inline
321 961
322#if EV_MINIMAL 962#if EV_FEATURE_CODE
963# define inline_speed ecb_inline
964#else
323# define inline_speed static noinline 965# define inline_speed static noinline
966#endif
967
968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
969
970#if EV_MINPRI == EV_MAXPRI
971# define ABSPRI(w) (((W)w), 0)
324#else 972#else
325# define inline_speed static inline
326#endif
327
328#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
329#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 973# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
974#endif
330 975
331#define EMPTY /* required for microsofts broken pseudo-c compiler */ 976#define EMPTY /* required for microsofts broken pseudo-c compiler */
332#define EMPTY2(a,b) /* used to suppress some warnings */ 977#define EMPTY2(a,b) /* used to suppress some warnings */
333 978
334typedef ev_watcher *W; 979typedef ev_watcher *W;
… …
336typedef ev_watcher_time *WT; 981typedef ev_watcher_time *WT;
337 982
338#define ev_active(w) ((W)(w))->active 983#define ev_active(w) ((W)(w))->active
339#define ev_at(w) ((WT)(w))->at 984#define ev_at(w) ((WT)(w))->at
340 985
986#if EV_USE_REALTIME
987/* sig_atomic_t is used to avoid per-thread variables or locking but still */
988/* giving it a reasonably high chance of working on typical architectures */
989static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
990#endif
991
341#if EV_USE_MONOTONIC 992#if EV_USE_MONOTONIC
342/* sig_atomic_t is used to avoid per-thread variables or locking but still */
343/* giving it a reasonably high chance of working on typical architetcures */
344static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 993static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
994#endif
995
996#ifndef EV_FD_TO_WIN32_HANDLE
997# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
998#endif
999#ifndef EV_WIN32_HANDLE_TO_FD
1000# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1001#endif
1002#ifndef EV_WIN32_CLOSE_FD
1003# define EV_WIN32_CLOSE_FD(fd) close (fd)
345#endif 1004#endif
346 1005
347#ifdef _WIN32 1006#ifdef _WIN32
348# include "ev_win32.c" 1007# include "ev_win32.c"
349#endif 1008#endif
350 1009
351/*****************************************************************************/ 1010/*****************************************************************************/
352 1011
1012/* define a suitable floor function (only used by periodics atm) */
1013
1014#if EV_USE_FLOOR
1015# include <math.h>
1016# define ev_floor(v) floor (v)
1017#else
1018
1019#include <float.h>
1020
1021/* a floor() replacement function, should be independent of ev_tstamp type */
1022static ev_tstamp noinline
1023ev_floor (ev_tstamp v)
1024{
1025 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1028#else
1029 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1030#endif
1031
1032 /* argument too large for an unsigned long? */
1033 if (expect_false (v >= shift))
1034 {
1035 ev_tstamp f;
1036
1037 if (v == v - 1.)
1038 return v; /* very large number */
1039
1040 f = shift * ev_floor (v * (1. / shift));
1041 return f + ev_floor (v - f);
1042 }
1043
1044 /* special treatment for negative args? */
1045 if (expect_false (v < 0.))
1046 {
1047 ev_tstamp f = -ev_floor (-v);
1048
1049 return f - (f == v ? 0 : 1);
1050 }
1051
1052 /* fits into an unsigned long */
1053 return (unsigned long)v;
1054}
1055
1056#endif
1057
1058/*****************************************************************************/
1059
1060#ifdef __linux
1061# include <sys/utsname.h>
1062#endif
1063
1064static unsigned int noinline ecb_cold
1065ev_linux_version (void)
1066{
1067#ifdef __linux
1068 unsigned int v = 0;
1069 struct utsname buf;
1070 int i;
1071 char *p = buf.release;
1072
1073 if (uname (&buf))
1074 return 0;
1075
1076 for (i = 3+1; --i; )
1077 {
1078 unsigned int c = 0;
1079
1080 for (;;)
1081 {
1082 if (*p >= '0' && *p <= '9')
1083 c = c * 10 + *p++ - '0';
1084 else
1085 {
1086 p += *p == '.';
1087 break;
1088 }
1089 }
1090
1091 v = (v << 8) | c;
1092 }
1093
1094 return v;
1095#else
1096 return 0;
1097#endif
1098}
1099
1100/*****************************************************************************/
1101
1102#if EV_AVOID_STDIO
1103static void noinline ecb_cold
1104ev_printerr (const char *msg)
1105{
1106 write (STDERR_FILENO, msg, strlen (msg));
1107}
1108#endif
1109
353static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg) EV_THROW;
354 1111
355void 1112void ecb_cold
356ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
357{ 1114{
358 syserr_cb = cb; 1115 syserr_cb = cb;
359} 1116}
360 1117
361static void noinline 1118static void noinline ecb_cold
362syserr (const char *msg) 1119ev_syserr (const char *msg)
363{ 1120{
364 if (!msg) 1121 if (!msg)
365 msg = "(libev) system error"; 1122 msg = "(libev) system error";
366 1123
367 if (syserr_cb) 1124 if (syserr_cb)
368 syserr_cb (msg); 1125 syserr_cb (msg);
369 else 1126 else
370 { 1127 {
1128#if EV_AVOID_STDIO
1129 ev_printerr (msg);
1130 ev_printerr (": ");
1131 ev_printerr (strerror (errno));
1132 ev_printerr ("\n");
1133#else
371 perror (msg); 1134 perror (msg);
1135#endif
372 abort (); 1136 abort ();
373 } 1137 }
374} 1138}
375 1139
376static void * 1140static void *
377ev_realloc_emul (void *ptr, long size) 1141ev_realloc_emul (void *ptr, long size)
378{ 1142{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
379 /* some systems, notably openbsd and darwin, fail to properly 1146 /* some systems, notably openbsd and darwin, fail to properly
380 * implement realloc (x, 0) (as required by both ansi c-98 and 1147 * implement realloc (x, 0) (as required by both ansi c-89 and
381 * the single unix specification, so work around them here. 1148 * the single unix specification, so work around them here.
382 */ 1149 */
383 1150
384 if (size) 1151 if (size)
385 return realloc (ptr, size); 1152 return realloc (ptr, size);
386 1153
387 free (ptr); 1154 free (ptr);
388 return 0; 1155 return 0;
1156#endif
389} 1157}
390 1158
391static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
392 1160
393void 1161void ecb_cold
394ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
395{ 1163{
396 alloc = cb; 1164 alloc = cb;
397} 1165}
398 1166
399inline_speed void * 1167inline_speed void *
… …
401{ 1169{
402 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
403 1171
404 if (!ptr && size) 1172 if (!ptr && size)
405 { 1173 {
1174#if EV_AVOID_STDIO
1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1176#else
406 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1178#endif
407 abort (); 1179 abort ();
408 } 1180 }
409 1181
410 return ptr; 1182 return ptr;
411} 1183}
… …
413#define ev_malloc(size) ev_realloc (0, (size)) 1185#define ev_malloc(size) ev_realloc (0, (size))
414#define ev_free(ptr) ev_realloc ((ptr), 0) 1186#define ev_free(ptr) ev_realloc ((ptr), 0)
415 1187
416/*****************************************************************************/ 1188/*****************************************************************************/
417 1189
1190/* set in reify when reification needed */
1191#define EV_ANFD_REIFY 1
1192
1193/* file descriptor info structure */
418typedef struct 1194typedef struct
419{ 1195{
420 WL head; 1196 WL head;
421 unsigned char events; 1197 unsigned char events; /* the events watched for */
1198 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1199 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
422 unsigned char reify; 1200 unsigned char unused;
1201#if EV_USE_EPOLL
1202 unsigned int egen; /* generation counter to counter epoll bugs */
1203#endif
423#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
424 SOCKET handle; 1205 SOCKET handle;
425#endif 1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
1209#endif
426} ANFD; 1210} ANFD;
427 1211
1212/* stores the pending event set for a given watcher */
428typedef struct 1213typedef struct
429{ 1214{
430 W w; 1215 W w;
431 int events; 1216 int events; /* the pending event set for the given watcher */
432} ANPENDING; 1217} ANPENDING;
433 1218
434#if EV_USE_INOTIFY 1219#if EV_USE_INOTIFY
435/* hash table entry per inotify-id */ 1220/* hash table entry per inotify-id */
436typedef struct 1221typedef struct
… …
439} ANFS; 1224} ANFS;
440#endif 1225#endif
441 1226
442/* Heap Entry */ 1227/* Heap Entry */
443#if EV_HEAP_CACHE_AT 1228#if EV_HEAP_CACHE_AT
1229 /* a heap element */
444 typedef struct { 1230 typedef struct {
445 ev_tstamp at; 1231 ev_tstamp at;
446 WT w; 1232 WT w;
447 } ANHE; 1233 } ANHE;
448 1234
449 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1235 #define ANHE_w(he) (he).w /* access watcher, read-write */
450 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1236 #define ANHE_at(he) (he).at /* access cached at, read-only */
451 #define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */ 1237 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452#else 1238#else
1239 /* a heap element */
453 typedef WT ANHE; 1240 typedef WT ANHE;
454 1241
455 #define ANHE_w(he) (he) 1242 #define ANHE_w(he) (he)
456 #define ANHE_at(he) (he)->at 1243 #define ANHE_at(he) (he)->at
457 #define ANHE_at_set(he) 1244 #define ANHE_at_cache(he)
458#endif 1245#endif
459 1246
460#if EV_MULTIPLICITY 1247#if EV_MULTIPLICITY
461 1248
462 struct ev_loop 1249 struct ev_loop
… …
468 #undef VAR 1255 #undef VAR
469 }; 1256 };
470 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
471 1258
472 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
473 struct ev_loop *ev_default_loop_ptr; 1260 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
474 1261
475#else 1262#else
476 1263
477 ev_tstamp ev_rt_now; 1264 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
478 #define VAR(name,decl) static decl; 1265 #define VAR(name,decl) static decl;
479 #include "ev_vars.h" 1266 #include "ev_vars.h"
480 #undef VAR 1267 #undef VAR
481 1268
482 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
483 1270
484#endif 1271#endif
485 1272
1273#if EV_FEATURE_API
1274# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1275# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1276# define EV_INVOKE_PENDING invoke_cb (EV_A)
1277#else
1278# define EV_RELEASE_CB (void)0
1279# define EV_ACQUIRE_CB (void)0
1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1281#endif
1282
1283#define EVBREAK_RECURSE 0x80
1284
486/*****************************************************************************/ 1285/*****************************************************************************/
487 1286
1287#ifndef EV_HAVE_EV_TIME
488ev_tstamp 1288ev_tstamp
489ev_time (void) 1289ev_time (void) EV_THROW
490{ 1290{
491#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
1292 if (expect_true (have_realtime))
1293 {
492 struct timespec ts; 1294 struct timespec ts;
493 clock_gettime (CLOCK_REALTIME, &ts); 1295 clock_gettime (CLOCK_REALTIME, &ts);
494 return ts.tv_sec + ts.tv_nsec * 1e-9; 1296 return ts.tv_sec + ts.tv_nsec * 1e-9;
495#else 1297 }
1298#endif
1299
496 struct timeval tv; 1300 struct timeval tv;
497 gettimeofday (&tv, 0); 1301 gettimeofday (&tv, 0);
498 return tv.tv_sec + tv.tv_usec * 1e-6; 1302 return tv.tv_sec + tv.tv_usec * 1e-6;
499#endif
500} 1303}
1304#endif
501 1305
502ev_tstamp inline_size 1306inline_size ev_tstamp
503get_clock (void) 1307get_clock (void)
504{ 1308{
505#if EV_USE_MONOTONIC 1309#if EV_USE_MONOTONIC
506 if (expect_true (have_monotonic)) 1310 if (expect_true (have_monotonic))
507 { 1311 {
… …
514 return ev_time (); 1318 return ev_time ();
515} 1319}
516 1320
517#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
518ev_tstamp 1322ev_tstamp
519ev_now (EV_P) 1323ev_now (EV_P) EV_THROW
520{ 1324{
521 return ev_rt_now; 1325 return ev_rt_now;
522} 1326}
523#endif 1327#endif
524 1328
525void 1329void
526ev_sleep (ev_tstamp delay) 1330ev_sleep (ev_tstamp delay) EV_THROW
527{ 1331{
528 if (delay > 0.) 1332 if (delay > 0.)
529 { 1333 {
530#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
531 struct timespec ts; 1335 struct timespec ts;
532 1336
533 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
534 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
535
536 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
537#elif defined(_WIN32) 1339#elif defined _WIN32
538 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
539#else 1341#else
540 struct timeval tv; 1342 struct timeval tv;
541 1343
542 tv.tv_sec = (time_t)delay; 1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
543 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 1345 /* something not guaranteed by newer posix versions, but guaranteed */
544 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
545 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
546#endif 1349#endif
547 } 1350 }
548} 1351}
549 1352
550/*****************************************************************************/ 1353/*****************************************************************************/
551 1354
552#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1355#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
553 1356
554int inline_size 1357/* find a suitable new size for the given array, */
1358/* hopefully by rounding to a nice-to-malloc size */
1359inline_size int
555array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
556{ 1361{
557 int ncur = cur + 1; 1362 int ncur = cur + 1;
558 1363
559 do 1364 do
560 ncur <<= 1; 1365 ncur <<= 1;
561 while (cnt > ncur); 1366 while (cnt > ncur);
562 1367
563 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1368 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
564 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
565 { 1370 {
566 ncur *= elem; 1371 ncur *= elem;
567 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1372 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
568 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
570 } 1375 }
571 1376
572 return ncur; 1377 return ncur;
573} 1378}
574 1379
575static noinline void * 1380static void * noinline ecb_cold
576array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
577{ 1382{
578 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
579 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
580} 1385}
1386
1387#define array_init_zero(base,count) \
1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
581 1389
582#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
583 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
584 { \ 1392 { \
585 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
586 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
587 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
588 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
589 } 1397 }
590 1398
… …
597 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1405 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598 } 1406 }
599#endif 1407#endif
600 1408
601#define array_free(stem, idx) \ 1409#define array_free(stem, idx) \
602 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1410 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
603 1411
604/*****************************************************************************/ 1412/*****************************************************************************/
605 1413
1414/* dummy callback for pending events */
1415static void noinline
1416pendingcb (EV_P_ ev_prepare *w, int revents)
1417{
1418}
1419
606void noinline 1420void noinline
607ev_feed_event (EV_P_ void *w, int revents) 1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW
608{ 1422{
609 W w_ = (W)w; 1423 W w_ = (W)w;
610 int pri = ABSPRI (w_); 1424 int pri = ABSPRI (w_);
611 1425
612 if (expect_false (w_->pending)) 1426 if (expect_false (w_->pending))
… …
616 w_->pending = ++pendingcnt [pri]; 1430 w_->pending = ++pendingcnt [pri];
617 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
618 pendings [pri][w_->pending - 1].w = w_; 1432 pendings [pri][w_->pending - 1].w = w_;
619 pendings [pri][w_->pending - 1].events = revents; 1433 pendings [pri][w_->pending - 1].events = revents;
620 } 1434 }
621}
622 1435
623void inline_speed 1436 pendingpri = NUMPRI - 1;
1437}
1438
1439inline_speed void
1440feed_reverse (EV_P_ W w)
1441{
1442 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1443 rfeeds [rfeedcnt++] = w;
1444}
1445
1446inline_size void
1447feed_reverse_done (EV_P_ int revents)
1448{
1449 do
1450 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1451 while (rfeedcnt);
1452}
1453
1454inline_speed void
624queue_events (EV_P_ W *events, int eventcnt, int type) 1455queue_events (EV_P_ W *events, int eventcnt, int type)
625{ 1456{
626 int i; 1457 int i;
627 1458
628 for (i = 0; i < eventcnt; ++i) 1459 for (i = 0; i < eventcnt; ++i)
629 ev_feed_event (EV_A_ events [i], type); 1460 ev_feed_event (EV_A_ events [i], type);
630} 1461}
631 1462
632/*****************************************************************************/ 1463/*****************************************************************************/
633 1464
634void inline_size 1465inline_speed void
635anfds_init (ANFD *base, int count)
636{
637 while (count--)
638 {
639 base->head = 0;
640 base->events = EV_NONE;
641 base->reify = 0;
642
643 ++base;
644 }
645}
646
647void inline_speed
648fd_event (EV_P_ int fd, int revents) 1466fd_event_nocheck (EV_P_ int fd, int revents)
649{ 1467{
650 ANFD *anfd = anfds + fd; 1468 ANFD *anfd = anfds + fd;
651 ev_io *w; 1469 ev_io *w;
652 1470
653 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1471 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
657 if (ev) 1475 if (ev)
658 ev_feed_event (EV_A_ (W)w, ev); 1476 ev_feed_event (EV_A_ (W)w, ev);
659 } 1477 }
660} 1478}
661 1479
1480/* do not submit kernel events for fds that have reify set */
1481/* because that means they changed while we were polling for new events */
1482inline_speed void
1483fd_event (EV_P_ int fd, int revents)
1484{
1485 ANFD *anfd = anfds + fd;
1486
1487 if (expect_true (!anfd->reify))
1488 fd_event_nocheck (EV_A_ fd, revents);
1489}
1490
662void 1491void
663ev_feed_fd_event (EV_P_ int fd, int revents) 1492ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
664{ 1493{
665 if (fd >= 0 && fd < anfdmax) 1494 if (fd >= 0 && fd < anfdmax)
666 fd_event (EV_A_ fd, revents); 1495 fd_event_nocheck (EV_A_ fd, revents);
667} 1496}
668 1497
669void inline_size 1498/* make sure the external fd watch events are in-sync */
1499/* with the kernel/libev internal state */
1500inline_size void
670fd_reify (EV_P) 1501fd_reify (EV_P)
671{ 1502{
672 int i; 1503 int i;
1504
1505#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1506 for (i = 0; i < fdchangecnt; ++i)
1507 {
1508 int fd = fdchanges [i];
1509 ANFD *anfd = anfds + fd;
1510
1511 if (anfd->reify & EV__IOFDSET && anfd->head)
1512 {
1513 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1514
1515 if (handle != anfd->handle)
1516 {
1517 unsigned long arg;
1518
1519 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1520
1521 /* handle changed, but fd didn't - we need to do it in two steps */
1522 backend_modify (EV_A_ fd, anfd->events, 0);
1523 anfd->events = 0;
1524 anfd->handle = handle;
1525 }
1526 }
1527 }
1528#endif
673 1529
674 for (i = 0; i < fdchangecnt; ++i) 1530 for (i = 0; i < fdchangecnt; ++i)
675 { 1531 {
676 int fd = fdchanges [i]; 1532 int fd = fdchanges [i];
677 ANFD *anfd = anfds + fd; 1533 ANFD *anfd = anfds + fd;
678 ev_io *w; 1534 ev_io *w;
679 1535
680 unsigned char events = 0; 1536 unsigned char o_events = anfd->events;
1537 unsigned char o_reify = anfd->reify;
681 1538
682 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1539 anfd->reify = 0;
683 events |= (unsigned char)w->events;
684 1540
685#if EV_SELECT_IS_WINSOCKET 1541 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
686 if (events)
687 { 1542 {
688 unsigned long argp; 1543 anfd->events = 0;
689 #ifdef EV_FD_TO_WIN32_HANDLE 1544
690 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1545 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
691 #else 1546 anfd->events |= (unsigned char)w->events;
692 anfd->handle = _get_osfhandle (fd); 1547
693 #endif 1548 if (o_events != anfd->events)
694 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1549 o_reify = EV__IOFDSET; /* actually |= */
695 } 1550 }
696#endif
697 1551
698 { 1552 if (o_reify & EV__IOFDSET)
699 unsigned char o_events = anfd->events;
700 unsigned char o_reify = anfd->reify;
701
702 anfd->reify = 0;
703 anfd->events = events;
704
705 if (o_events != events || o_reify & EV_IOFDSET)
706 backend_modify (EV_A_ fd, o_events, events); 1553 backend_modify (EV_A_ fd, o_events, anfd->events);
707 }
708 } 1554 }
709 1555
710 fdchangecnt = 0; 1556 fdchangecnt = 0;
711} 1557}
712 1558
713void inline_size 1559/* something about the given fd changed */
1560inline_size void
714fd_change (EV_P_ int fd, int flags) 1561fd_change (EV_P_ int fd, int flags)
715{ 1562{
716 unsigned char reify = anfds [fd].reify; 1563 unsigned char reify = anfds [fd].reify;
717 anfds [fd].reify |= flags; 1564 anfds [fd].reify |= flags;
718 1565
… …
722 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1569 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
723 fdchanges [fdchangecnt - 1] = fd; 1570 fdchanges [fdchangecnt - 1] = fd;
724 } 1571 }
725} 1572}
726 1573
727void inline_speed 1574/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1575inline_speed void ecb_cold
728fd_kill (EV_P_ int fd) 1576fd_kill (EV_P_ int fd)
729{ 1577{
730 ev_io *w; 1578 ev_io *w;
731 1579
732 while ((w = (ev_io *)anfds [fd].head)) 1580 while ((w = (ev_io *)anfds [fd].head))
… …
734 ev_io_stop (EV_A_ w); 1582 ev_io_stop (EV_A_ w);
735 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
736 } 1584 }
737} 1585}
738 1586
739int inline_size 1587/* check whether the given fd is actually valid, for error recovery */
1588inline_size int ecb_cold
740fd_valid (int fd) 1589fd_valid (int fd)
741{ 1590{
742#ifdef _WIN32 1591#ifdef _WIN32
743 return _get_osfhandle (fd) != -1; 1592 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
744#else 1593#else
745 return fcntl (fd, F_GETFD) != -1; 1594 return fcntl (fd, F_GETFD) != -1;
746#endif 1595#endif
747} 1596}
748 1597
749/* called on EBADF to verify fds */ 1598/* called on EBADF to verify fds */
750static void noinline 1599static void noinline ecb_cold
751fd_ebadf (EV_P) 1600fd_ebadf (EV_P)
752{ 1601{
753 int fd; 1602 int fd;
754 1603
755 for (fd = 0; fd < anfdmax; ++fd) 1604 for (fd = 0; fd < anfdmax; ++fd)
756 if (anfds [fd].events) 1605 if (anfds [fd].events)
757 if (!fd_valid (fd) == -1 && errno == EBADF) 1606 if (!fd_valid (fd) && errno == EBADF)
758 fd_kill (EV_A_ fd); 1607 fd_kill (EV_A_ fd);
759} 1608}
760 1609
761/* called on ENOMEM in select/poll to kill some fds and retry */ 1610/* called on ENOMEM in select/poll to kill some fds and retry */
762static void noinline 1611static void noinline ecb_cold
763fd_enomem (EV_P) 1612fd_enomem (EV_P)
764{ 1613{
765 int fd; 1614 int fd;
766 1615
767 for (fd = anfdmax; fd--; ) 1616 for (fd = anfdmax; fd--; )
768 if (anfds [fd].events) 1617 if (anfds [fd].events)
769 { 1618 {
770 fd_kill (EV_A_ fd); 1619 fd_kill (EV_A_ fd);
771 return; 1620 break;
772 } 1621 }
773} 1622}
774 1623
775/* usually called after fork if backend needs to re-arm all fds from scratch */ 1624/* usually called after fork if backend needs to re-arm all fds from scratch */
776static void noinline 1625static void noinline
… …
780 1629
781 for (fd = 0; fd < anfdmax; ++fd) 1630 for (fd = 0; fd < anfdmax; ++fd)
782 if (anfds [fd].events) 1631 if (anfds [fd].events)
783 { 1632 {
784 anfds [fd].events = 0; 1633 anfds [fd].events = 0;
1634 anfds [fd].emask = 0;
785 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1635 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
786 } 1636 }
787} 1637}
788 1638
1639/* used to prepare libev internal fd's */
1640/* this is not fork-safe */
1641inline_speed void
1642fd_intern (int fd)
1643{
1644#ifdef _WIN32
1645 unsigned long arg = 1;
1646 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1647#else
1648 fcntl (fd, F_SETFD, FD_CLOEXEC);
1649 fcntl (fd, F_SETFL, O_NONBLOCK);
1650#endif
1651}
1652
789/*****************************************************************************/ 1653/*****************************************************************************/
790 1654
791/* 1655/*
792 * the heap functions want a real array index. array index 0 uis guaranteed to not 1656 * the heap functions want a real array index. array index 0 is guaranteed to not
793 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1657 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
794 * the branching factor of the d-tree. 1658 * the branching factor of the d-tree.
795 */ 1659 */
796 1660
797/* 1661/*
… …
802 */ 1666 */
803#if EV_USE_4HEAP 1667#if EV_USE_4HEAP
804 1668
805#define DHEAP 4 1669#define DHEAP 4
806#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1670#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807 1671#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808/* towards the root */ 1672#define UPHEAP_DONE(p,k) ((p) == (k))
809void inline_speed
810upheap (ANHE *heap, int k)
811{
812 ANHE he = heap [k];
813
814 for (;;)
815 {
816 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
817
818 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
819 break;
820
821 heap [k] = heap [p];
822 ev_active (ANHE_w (heap [k])) = k;
823 k = p;
824 }
825
826 ev_active (ANHE_w (he)) = k;
827 heap [k] = he;
828}
829 1673
830/* away from the root */ 1674/* away from the root */
831void inline_speed 1675inline_speed void
832downheap (ANHE *heap, int N, int k) 1676downheap (ANHE *heap, int N, int k)
833{ 1677{
834 ANHE he = heap [k]; 1678 ANHE he = heap [k];
835 ANHE *E = heap + N + HEAP0; 1679 ANHE *E = heap + N + HEAP0;
836 1680
837 for (;;) 1681 for (;;)
838 { 1682 {
839 ev_tstamp minat; 1683 ev_tstamp minat;
840 ANHE *minpos; 1684 ANHE *minpos;
841 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1685 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
842 1686
843 // find minimum child 1687 /* find minimum child */
844 if (expect_true (pos + DHEAP - 1 < E)) 1688 if (expect_true (pos + DHEAP - 1 < E))
845 { 1689 {
846 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1690 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847 if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1691 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
848 if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 1692 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
849 if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 1693 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
850 } 1694 }
851 else if (pos < E) 1695 else if (pos < E)
852 { 1696 {
853 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1697 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
854 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1698 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
… …
859 break; 1703 break;
860 1704
861 if (ANHE_at (he) <= minat) 1705 if (ANHE_at (he) <= minat)
862 break; 1706 break;
863 1707
1708 heap [k] = *minpos;
864 ev_active (ANHE_w (*minpos)) = k; 1709 ev_active (ANHE_w (*minpos)) = k;
865 heap [k] = *minpos;
866 1710
867 k = minpos - heap; 1711 k = minpos - heap;
868 } 1712 }
869 1713
1714 heap [k] = he;
870 ev_active (ANHE_w (he)) = k; 1715 ev_active (ANHE_w (he)) = k;
871 heap [k] = he;
872} 1716}
873 1717
874#else // 4HEAP 1718#else /* 4HEAP */
875 1719
876#define HEAP0 1 1720#define HEAP0 1
1721#define HPARENT(k) ((k) >> 1)
1722#define UPHEAP_DONE(p,k) (!(p))
877 1723
878/* towards the root */ 1724/* away from the root */
879void inline_speed 1725inline_speed void
880upheap (ANHE *heap, int k) 1726downheap (ANHE *heap, int N, int k)
881{ 1727{
882 ANHE he = heap [k]; 1728 ANHE he = heap [k];
883 1729
884 for (;;) 1730 for (;;)
885 { 1731 {
886 int p = k >> 1; 1732 int c = k << 1;
887 1733
888 /* maybe we could use a dummy element at heap [0]? */ 1734 if (c >= N + HEAP0)
889 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
890 break; 1735 break;
891 1736
892 heap [k] = heap [p];
893 ev_active (ANHE_w (heap [k])) = k;
894 k = p;
895 }
896
897 heap [k] = he;
898 ev_active (ANHE_w (heap [k])) = k;
899}
900
901/* away from the root */
902void inline_speed
903downheap (ANHE *heap, int N, int k)
904{
905 ANHE he = heap [k];
906
907 for (;;)
908 {
909 int c = k << 1;
910
911 if (c > N)
912 break;
913
914 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1737 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
915 ? 1 : 0; 1738 ? 1 : 0;
916 1739
917 if (ANHE_at (he) <= ANHE_at (heap [c])) 1740 if (ANHE_at (he) <= ANHE_at (heap [c]))
918 break; 1741 break;
919 1742
… …
926 heap [k] = he; 1749 heap [k] = he;
927 ev_active (ANHE_w (he)) = k; 1750 ev_active (ANHE_w (he)) = k;
928} 1751}
929#endif 1752#endif
930 1753
931void inline_size 1754/* towards the root */
1755inline_speed void
1756upheap (ANHE *heap, int k)
1757{
1758 ANHE he = heap [k];
1759
1760 for (;;)
1761 {
1762 int p = HPARENT (k);
1763
1764 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1765 break;
1766
1767 heap [k] = heap [p];
1768 ev_active (ANHE_w (heap [k])) = k;
1769 k = p;
1770 }
1771
1772 heap [k] = he;
1773 ev_active (ANHE_w (he)) = k;
1774}
1775
1776/* move an element suitably so it is in a correct place */
1777inline_size void
932adjustheap (ANHE *heap, int N, int k) 1778adjustheap (ANHE *heap, int N, int k)
933{ 1779{
1780 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
934 upheap (heap, k); 1781 upheap (heap, k);
1782 else
935 downheap (heap, N, k); 1783 downheap (heap, N, k);
1784}
1785
1786/* rebuild the heap: this function is used only once and executed rarely */
1787inline_size void
1788reheap (ANHE *heap, int N)
1789{
1790 int i;
1791
1792 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1793 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1794 for (i = 0; i < N; ++i)
1795 upheap (heap, i + HEAP0);
936} 1796}
937 1797
938/*****************************************************************************/ 1798/*****************************************************************************/
939 1799
1800/* associate signal watchers to a signal signal */
940typedef struct 1801typedef struct
941{ 1802{
1803 EV_ATOMIC_T pending;
1804#if EV_MULTIPLICITY
1805 EV_P;
1806#endif
942 WL head; 1807 WL head;
943 EV_ATOMIC_T gotsig;
944} ANSIG; 1808} ANSIG;
945 1809
946static ANSIG *signals; 1810static ANSIG signals [EV_NSIG - 1];
947static int signalmax;
948
949static EV_ATOMIC_T gotsig;
950
951void inline_size
952signals_init (ANSIG *base, int count)
953{
954 while (count--)
955 {
956 base->head = 0;
957 base->gotsig = 0;
958
959 ++base;
960 }
961}
962 1811
963/*****************************************************************************/ 1812/*****************************************************************************/
964 1813
965void inline_speed 1814#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
966fd_intern (int fd)
967{
968#ifdef _WIN32
969 int arg = 1;
970 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
971#else
972 fcntl (fd, F_SETFD, FD_CLOEXEC);
973 fcntl (fd, F_SETFL, O_NONBLOCK);
974#endif
975}
976 1815
977static void noinline 1816static void noinline ecb_cold
978evpipe_init (EV_P) 1817evpipe_init (EV_P)
979{ 1818{
980 if (!ev_is_active (&pipeev)) 1819 if (!ev_is_active (&pipe_w))
981 { 1820 {
982#if EV_USE_EVENTFD 1821# if EV_USE_EVENTFD
1822 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1823 if (evfd < 0 && errno == EINVAL)
983 if ((evfd = eventfd (0, 0)) >= 0) 1824 evfd = eventfd (0, 0);
1825
1826 if (evfd >= 0)
984 { 1827 {
985 evpipe [0] = -1; 1828 evpipe [0] = -1;
986 fd_intern (evfd); 1829 fd_intern (evfd); /* doing it twice doesn't hurt */
987 ev_io_set (&pipeev, evfd, EV_READ); 1830 ev_io_set (&pipe_w, evfd, EV_READ);
988 } 1831 }
989 else 1832 else
990#endif 1833# endif
991 { 1834 {
992 while (pipe (evpipe)) 1835 while (pipe (evpipe))
993 syserr ("(libev) error creating signal/async pipe"); 1836 ev_syserr ("(libev) error creating signal/async pipe");
994 1837
995 fd_intern (evpipe [0]); 1838 fd_intern (evpipe [0]);
996 fd_intern (evpipe [1]); 1839 fd_intern (evpipe [1]);
997 ev_io_set (&pipeev, evpipe [0], EV_READ); 1840 ev_io_set (&pipe_w, evpipe [0], EV_READ);
998 } 1841 }
999 1842
1000 ev_io_start (EV_A_ &pipeev); 1843 ev_io_start (EV_A_ &pipe_w);
1001 ev_unref (EV_A); /* watcher should not keep loop alive */ 1844 ev_unref (EV_A); /* watcher should not keep loop alive */
1002 } 1845 }
1003} 1846}
1004 1847
1005void inline_size 1848inline_speed void
1006evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1849evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1007{ 1850{
1008 if (!*flag) 1851 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1852
1853 if (expect_true (*flag))
1854 return;
1855
1856 *flag = 1;
1857
1858 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1859
1860 pipe_write_skipped = 1;
1861
1862 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1863
1864 if (pipe_write_wanted)
1009 { 1865 {
1866 int old_errno;
1867
1868 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1869
1010 int old_errno = errno; /* save errno because write might clobber it */ 1870 old_errno = errno; /* save errno because write will clobber it */
1011
1012 *flag = 1;
1013 1871
1014#if EV_USE_EVENTFD 1872#if EV_USE_EVENTFD
1015 if (evfd >= 0) 1873 if (evfd >= 0)
1016 { 1874 {
1017 uint64_t counter = 1; 1875 uint64_t counter = 1;
1018 write (evfd, &counter, sizeof (uint64_t)); 1876 write (evfd, &counter, sizeof (uint64_t));
1019 } 1877 }
1020 else 1878 else
1021#endif 1879#endif
1880 {
1881#ifdef _WIN32
1882 WSABUF buf;
1883 DWORD sent;
1884 buf.buf = &buf;
1885 buf.len = 1;
1886 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1887#else
1022 write (evpipe [1], &old_errno, 1); 1888 write (evpipe [1], &(evpipe [1]), 1);
1889#endif
1890 }
1023 1891
1024 errno = old_errno; 1892 errno = old_errno;
1025 } 1893 }
1026} 1894}
1027 1895
1896/* called whenever the libev signal pipe */
1897/* got some events (signal, async) */
1028static void 1898static void
1029pipecb (EV_P_ ev_io *iow, int revents) 1899pipecb (EV_P_ ev_io *iow, int revents)
1030{ 1900{
1901 int i;
1902
1903 if (revents & EV_READ)
1904 {
1031#if EV_USE_EVENTFD 1905#if EV_USE_EVENTFD
1032 if (evfd >= 0) 1906 if (evfd >= 0)
1033 { 1907 {
1034 uint64_t counter; 1908 uint64_t counter;
1035 read (evfd, &counter, sizeof (uint64_t)); 1909 read (evfd, &counter, sizeof (uint64_t));
1036 } 1910 }
1037 else 1911 else
1038#endif 1912#endif
1039 { 1913 {
1040 char dummy; 1914 char dummy[4];
1915#ifdef _WIN32
1916 WSABUF buf;
1917 DWORD recvd;
1918 buf.buf = dummy;
1919 buf.len = sizeof (dummy);
1920 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1921#else
1041 read (evpipe [0], &dummy, 1); 1922 read (evpipe [0], &dummy, sizeof (dummy));
1923#endif
1924 }
1925 }
1926
1927 pipe_write_skipped = 0;
1928
1929 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1930
1931#if EV_SIGNAL_ENABLE
1932 if (sig_pending)
1042 } 1933 {
1934 sig_pending = 0;
1043 1935
1044 if (gotsig && ev_is_default_loop (EV_A)) 1936 ECB_MEMORY_FENCE_RELEASE;
1045 {
1046 int signum;
1047 gotsig = 0;
1048 1937
1049 for (signum = signalmax; signum--; ) 1938 for (i = EV_NSIG - 1; i--; )
1050 if (signals [signum].gotsig) 1939 if (expect_false (signals [i].pending))
1051 ev_feed_signal_event (EV_A_ signum + 1); 1940 ev_feed_signal_event (EV_A_ i + 1);
1052 } 1941 }
1942#endif
1053 1943
1054#if EV_ASYNC_ENABLE 1944#if EV_ASYNC_ENABLE
1055 if (gotasync) 1945 if (async_pending)
1056 { 1946 {
1057 int i; 1947 async_pending = 0;
1058 gotasync = 0; 1948
1949 ECB_MEMORY_FENCE_RELEASE;
1059 1950
1060 for (i = asynccnt; i--; ) 1951 for (i = asynccnt; i--; )
1061 if (asyncs [i]->sent) 1952 if (asyncs [i]->sent)
1062 { 1953 {
1063 asyncs [i]->sent = 0; 1954 asyncs [i]->sent = 0;
… …
1067#endif 1958#endif
1068} 1959}
1069 1960
1070/*****************************************************************************/ 1961/*****************************************************************************/
1071 1962
1963void
1964ev_feed_signal (int signum) EV_THROW
1965{
1966#if EV_MULTIPLICITY
1967 EV_P = signals [signum - 1].loop;
1968
1969 if (!EV_A)
1970 return;
1971#endif
1972
1973 if (!ev_active (&pipe_w))
1974 return;
1975
1976 signals [signum - 1].pending = 1;
1977 evpipe_write (EV_A_ &sig_pending);
1978}
1979
1072static void 1980static void
1073ev_sighandler (int signum) 1981ev_sighandler (int signum)
1074{ 1982{
1983#ifdef _WIN32
1984 signal (signum, ev_sighandler);
1985#endif
1986
1987 ev_feed_signal (signum);
1988}
1989
1990void noinline
1991ev_feed_signal_event (EV_P_ int signum) EV_THROW
1992{
1993 WL w;
1994
1995 if (expect_false (signum <= 0 || signum > EV_NSIG))
1996 return;
1997
1998 --signum;
1999
1075#if EV_MULTIPLICITY 2000#if EV_MULTIPLICITY
1076 struct ev_loop *loop = &default_loop_struct; 2001 /* it is permissible to try to feed a signal to the wrong loop */
1077#endif 2002 /* or, likely more useful, feeding a signal nobody is waiting for */
1078 2003
1079#if _WIN32 2004 if (expect_false (signals [signum].loop != EV_A))
1080 signal (signum, ev_sighandler);
1081#endif
1082
1083 signals [signum - 1].gotsig = 1;
1084 evpipe_write (EV_A_ &gotsig);
1085}
1086
1087void noinline
1088ev_feed_signal_event (EV_P_ int signum)
1089{
1090 WL w;
1091
1092#if EV_MULTIPLICITY
1093 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1094#endif
1095
1096 --signum;
1097
1098 if (signum < 0 || signum >= signalmax)
1099 return; 2005 return;
2006#endif
1100 2007
1101 signals [signum].gotsig = 0; 2008 signals [signum].pending = 0;
1102 2009
1103 for (w = signals [signum].head; w; w = w->next) 2010 for (w = signals [signum].head; w; w = w->next)
1104 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2011 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1105} 2012}
1106 2013
2014#if EV_USE_SIGNALFD
2015static void
2016sigfdcb (EV_P_ ev_io *iow, int revents)
2017{
2018 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2019
2020 for (;;)
2021 {
2022 ssize_t res = read (sigfd, si, sizeof (si));
2023
2024 /* not ISO-C, as res might be -1, but works with SuS */
2025 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2026 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2027
2028 if (res < (ssize_t)sizeof (si))
2029 break;
2030 }
2031}
2032#endif
2033
2034#endif
2035
1107/*****************************************************************************/ 2036/*****************************************************************************/
1108 2037
2038#if EV_CHILD_ENABLE
1109static WL childs [EV_PID_HASHSIZE]; 2039static WL childs [EV_PID_HASHSIZE];
1110
1111#ifndef _WIN32
1112 2040
1113static ev_signal childev; 2041static ev_signal childev;
1114 2042
1115#ifndef WIFCONTINUED 2043#ifndef WIFCONTINUED
1116# define WIFCONTINUED(status) 0 2044# define WIFCONTINUED(status) 0
1117#endif 2045#endif
1118 2046
1119void inline_speed 2047/* handle a single child status event */
2048inline_speed void
1120child_reap (EV_P_ int chain, int pid, int status) 2049child_reap (EV_P_ int chain, int pid, int status)
1121{ 2050{
1122 ev_child *w; 2051 ev_child *w;
1123 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2052 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1124 2053
1125 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2054 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1126 { 2055 {
1127 if ((w->pid == pid || !w->pid) 2056 if ((w->pid == pid || !w->pid)
1128 && (!traced || (w->flags & 1))) 2057 && (!traced || (w->flags & 1)))
1129 { 2058 {
1130 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2059 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1137 2066
1138#ifndef WCONTINUED 2067#ifndef WCONTINUED
1139# define WCONTINUED 0 2068# define WCONTINUED 0
1140#endif 2069#endif
1141 2070
2071/* called on sigchld etc., calls waitpid */
1142static void 2072static void
1143childcb (EV_P_ ev_signal *sw, int revents) 2073childcb (EV_P_ ev_signal *sw, int revents)
1144{ 2074{
1145 int pid, status; 2075 int pid, status;
1146 2076
… …
1154 /* make sure we are called again until all children have been reaped */ 2084 /* make sure we are called again until all children have been reaped */
1155 /* we need to do it this way so that the callback gets called before we continue */ 2085 /* we need to do it this way so that the callback gets called before we continue */
1156 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2086 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1157 2087
1158 child_reap (EV_A_ pid, pid, status); 2088 child_reap (EV_A_ pid, pid, status);
1159 if (EV_PID_HASHSIZE > 1) 2089 if ((EV_PID_HASHSIZE) > 1)
1160 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2090 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1161} 2091}
1162 2092
1163#endif 2093#endif
1164 2094
1165/*****************************************************************************/ 2095/*****************************************************************************/
1166 2096
2097#if EV_USE_IOCP
2098# include "ev_iocp.c"
2099#endif
1167#if EV_USE_PORT 2100#if EV_USE_PORT
1168# include "ev_port.c" 2101# include "ev_port.c"
1169#endif 2102#endif
1170#if EV_USE_KQUEUE 2103#if EV_USE_KQUEUE
1171# include "ev_kqueue.c" 2104# include "ev_kqueue.c"
… …
1178#endif 2111#endif
1179#if EV_USE_SELECT 2112#if EV_USE_SELECT
1180# include "ev_select.c" 2113# include "ev_select.c"
1181#endif 2114#endif
1182 2115
1183int 2116int ecb_cold
1184ev_version_major (void) 2117ev_version_major (void) EV_THROW
1185{ 2118{
1186 return EV_VERSION_MAJOR; 2119 return EV_VERSION_MAJOR;
1187} 2120}
1188 2121
1189int 2122int ecb_cold
1190ev_version_minor (void) 2123ev_version_minor (void) EV_THROW
1191{ 2124{
1192 return EV_VERSION_MINOR; 2125 return EV_VERSION_MINOR;
1193} 2126}
1194 2127
1195/* return true if we are running with elevated privileges and should ignore env variables */ 2128/* return true if we are running with elevated privileges and should ignore env variables */
1196int inline_size 2129int inline_size ecb_cold
1197enable_secure (void) 2130enable_secure (void)
1198{ 2131{
1199#ifdef _WIN32 2132#ifdef _WIN32
1200 return 0; 2133 return 0;
1201#else 2134#else
1202 return getuid () != geteuid () 2135 return getuid () != geteuid ()
1203 || getgid () != getegid (); 2136 || getgid () != getegid ();
1204#endif 2137#endif
1205} 2138}
1206 2139
1207unsigned int 2140unsigned int ecb_cold
1208ev_supported_backends (void) 2141ev_supported_backends (void) EV_THROW
1209{ 2142{
1210 unsigned int flags = 0; 2143 unsigned int flags = 0;
1211 2144
1212 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2145 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1213 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2146 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1216 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2149 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1217 2150
1218 return flags; 2151 return flags;
1219} 2152}
1220 2153
1221unsigned int 2154unsigned int ecb_cold
1222ev_recommended_backends (void) 2155ev_recommended_backends (void) EV_THROW
1223{ 2156{
1224 unsigned int flags = ev_supported_backends (); 2157 unsigned int flags = ev_supported_backends ();
1225 2158
1226#ifndef __NetBSD__ 2159#ifndef __NetBSD__
1227 /* kqueue is borked on everything but netbsd apparently */ 2160 /* kqueue is borked on everything but netbsd apparently */
1228 /* it usually doesn't work correctly on anything but sockets and pipes */ 2161 /* it usually doesn't work correctly on anything but sockets and pipes */
1229 flags &= ~EVBACKEND_KQUEUE; 2162 flags &= ~EVBACKEND_KQUEUE;
1230#endif 2163#endif
1231#ifdef __APPLE__ 2164#ifdef __APPLE__
1232 // flags &= ~EVBACKEND_KQUEUE; for documentation 2165 /* only select works correctly on that "unix-certified" platform */
1233 flags &= ~EVBACKEND_POLL; 2166 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2167 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2168#endif
2169#ifdef __FreeBSD__
2170 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1234#endif 2171#endif
1235 2172
1236 return flags; 2173 return flags;
1237} 2174}
1238 2175
2176unsigned int ecb_cold
2177ev_embeddable_backends (void) EV_THROW
2178{
2179 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2180
2181 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2182 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2183 flags &= ~EVBACKEND_EPOLL;
2184
2185 return flags;
2186}
2187
1239unsigned int 2188unsigned int
1240ev_embeddable_backends (void) 2189ev_backend (EV_P) EV_THROW
1241{ 2190{
1242 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2191 return backend;
1243
1244 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1245 /* please fix it and tell me how to detect the fix */
1246 flags &= ~EVBACKEND_EPOLL;
1247
1248 return flags;
1249} 2192}
1250 2193
2194#if EV_FEATURE_API
1251unsigned int 2195unsigned int
1252ev_backend (EV_P) 2196ev_iteration (EV_P) EV_THROW
1253{ 2197{
1254 return backend; 2198 return loop_count;
1255} 2199}
1256 2200
1257unsigned int 2201unsigned int
1258ev_loop_count (EV_P) 2202ev_depth (EV_P) EV_THROW
1259{ 2203{
1260 return loop_count; 2204 return loop_depth;
1261} 2205}
1262 2206
1263void 2207void
1264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2208ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1265{ 2209{
1266 io_blocktime = interval; 2210 io_blocktime = interval;
1267} 2211}
1268 2212
1269void 2213void
1270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2214ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1271{ 2215{
1272 timeout_blocktime = interval; 2216 timeout_blocktime = interval;
1273} 2217}
1274 2218
2219void
2220ev_set_userdata (EV_P_ void *data) EV_THROW
2221{
2222 userdata = data;
2223}
2224
2225void *
2226ev_userdata (EV_P) EV_THROW
2227{
2228 return userdata;
2229}
2230
2231void
2232ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2233{
2234 invoke_cb = invoke_pending_cb;
2235}
2236
2237void
2238ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2239{
2240 release_cb = release;
2241 acquire_cb = acquire;
2242}
2243#endif
2244
2245/* initialise a loop structure, must be zero-initialised */
1275static void noinline 2246static void noinline ecb_cold
1276loop_init (EV_P_ unsigned int flags) 2247loop_init (EV_P_ unsigned int flags) EV_THROW
1277{ 2248{
1278 if (!backend) 2249 if (!backend)
1279 { 2250 {
2251 origflags = flags;
2252
2253#if EV_USE_REALTIME
2254 if (!have_realtime)
2255 {
2256 struct timespec ts;
2257
2258 if (!clock_gettime (CLOCK_REALTIME, &ts))
2259 have_realtime = 1;
2260 }
2261#endif
2262
1280#if EV_USE_MONOTONIC 2263#if EV_USE_MONOTONIC
2264 if (!have_monotonic)
1281 { 2265 {
1282 struct timespec ts; 2266 struct timespec ts;
2267
1283 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2268 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1284 have_monotonic = 1; 2269 have_monotonic = 1;
1285 } 2270 }
1286#endif
1287
1288 ev_rt_now = ev_time ();
1289 mn_now = get_clock ();
1290 now_floor = mn_now;
1291 rtmn_diff = ev_rt_now - mn_now;
1292
1293 io_blocktime = 0.;
1294 timeout_blocktime = 0.;
1295 backend = 0;
1296 backend_fd = -1;
1297 gotasync = 0;
1298#if EV_USE_INOTIFY
1299 fs_fd = -2;
1300#endif 2271#endif
1301 2272
1302 /* pid check not overridable via env */ 2273 /* pid check not overridable via env */
1303#ifndef _WIN32 2274#ifndef _WIN32
1304 if (flags & EVFLAG_FORKCHECK) 2275 if (flags & EVFLAG_FORKCHECK)
… …
1308 if (!(flags & EVFLAG_NOENV) 2279 if (!(flags & EVFLAG_NOENV)
1309 && !enable_secure () 2280 && !enable_secure ()
1310 && getenv ("LIBEV_FLAGS")) 2281 && getenv ("LIBEV_FLAGS"))
1311 flags = atoi (getenv ("LIBEV_FLAGS")); 2282 flags = atoi (getenv ("LIBEV_FLAGS"));
1312 2283
1313 if (!(flags & 0x0000ffffU)) 2284 ev_rt_now = ev_time ();
2285 mn_now = get_clock ();
2286 now_floor = mn_now;
2287 rtmn_diff = ev_rt_now - mn_now;
2288#if EV_FEATURE_API
2289 invoke_cb = ev_invoke_pending;
2290#endif
2291
2292 io_blocktime = 0.;
2293 timeout_blocktime = 0.;
2294 backend = 0;
2295 backend_fd = -1;
2296 sig_pending = 0;
2297#if EV_ASYNC_ENABLE
2298 async_pending = 0;
2299#endif
2300 pipe_write_skipped = 0;
2301 pipe_write_wanted = 0;
2302#if EV_USE_INOTIFY
2303 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2304#endif
2305#if EV_USE_SIGNALFD
2306 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2307#endif
2308
2309 if (!(flags & EVBACKEND_MASK))
1314 flags |= ev_recommended_backends (); 2310 flags |= ev_recommended_backends ();
1315 2311
2312#if EV_USE_IOCP
2313 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2314#endif
1316#if EV_USE_PORT 2315#if EV_USE_PORT
1317 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2316 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1318#endif 2317#endif
1319#if EV_USE_KQUEUE 2318#if EV_USE_KQUEUE
1320 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2319 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1327#endif 2326#endif
1328#if EV_USE_SELECT 2327#if EV_USE_SELECT
1329 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2328 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1330#endif 2329#endif
1331 2330
2331 ev_prepare_init (&pending_w, pendingcb);
2332
2333#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1332 ev_init (&pipeev, pipecb); 2334 ev_init (&pipe_w, pipecb);
1333 ev_set_priority (&pipeev, EV_MAXPRI); 2335 ev_set_priority (&pipe_w, EV_MAXPRI);
2336#endif
1334 } 2337 }
1335} 2338}
1336 2339
1337static void noinline 2340/* free up a loop structure */
2341void ecb_cold
1338loop_destroy (EV_P) 2342ev_loop_destroy (EV_P)
1339{ 2343{
1340 int i; 2344 int i;
1341 2345
2346#if EV_MULTIPLICITY
2347 /* mimic free (0) */
2348 if (!EV_A)
2349 return;
2350#endif
2351
2352#if EV_CLEANUP_ENABLE
2353 /* queue cleanup watchers (and execute them) */
2354 if (expect_false (cleanupcnt))
2355 {
2356 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2357 EV_INVOKE_PENDING;
2358 }
2359#endif
2360
2361#if EV_CHILD_ENABLE
2362 if (ev_is_active (&childev))
2363 {
2364 ev_ref (EV_A); /* child watcher */
2365 ev_signal_stop (EV_A_ &childev);
2366 }
2367#endif
2368
1342 if (ev_is_active (&pipeev)) 2369 if (ev_is_active (&pipe_w))
1343 { 2370 {
1344 ev_ref (EV_A); /* signal watcher */ 2371 /*ev_ref (EV_A);*/
1345 ev_io_stop (EV_A_ &pipeev); 2372 /*ev_io_stop (EV_A_ &pipe_w);*/
1346 2373
1347#if EV_USE_EVENTFD 2374#if EV_USE_EVENTFD
1348 if (evfd >= 0) 2375 if (evfd >= 0)
1349 close (evfd); 2376 close (evfd);
1350#endif 2377#endif
1351 2378
1352 if (evpipe [0] >= 0) 2379 if (evpipe [0] >= 0)
1353 { 2380 {
1354 close (evpipe [0]); 2381 EV_WIN32_CLOSE_FD (evpipe [0]);
1355 close (evpipe [1]); 2382 EV_WIN32_CLOSE_FD (evpipe [1]);
1356 } 2383 }
1357 } 2384 }
2385
2386#if EV_USE_SIGNALFD
2387 if (ev_is_active (&sigfd_w))
2388 close (sigfd);
2389#endif
1358 2390
1359#if EV_USE_INOTIFY 2391#if EV_USE_INOTIFY
1360 if (fs_fd >= 0) 2392 if (fs_fd >= 0)
1361 close (fs_fd); 2393 close (fs_fd);
1362#endif 2394#endif
1363 2395
1364 if (backend_fd >= 0) 2396 if (backend_fd >= 0)
1365 close (backend_fd); 2397 close (backend_fd);
1366 2398
2399#if EV_USE_IOCP
2400 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2401#endif
1367#if EV_USE_PORT 2402#if EV_USE_PORT
1368 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2403 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1369#endif 2404#endif
1370#if EV_USE_KQUEUE 2405#if EV_USE_KQUEUE
1371 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2406 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1386#if EV_IDLE_ENABLE 2421#if EV_IDLE_ENABLE
1387 array_free (idle, [i]); 2422 array_free (idle, [i]);
1388#endif 2423#endif
1389 } 2424 }
1390 2425
1391 ev_free (anfds); anfdmax = 0; 2426 ev_free (anfds); anfds = 0; anfdmax = 0;
1392 2427
1393 /* have to use the microsoft-never-gets-it-right macro */ 2428 /* have to use the microsoft-never-gets-it-right macro */
2429 array_free (rfeed, EMPTY);
1394 array_free (fdchange, EMPTY); 2430 array_free (fdchange, EMPTY);
1395 array_free (timer, EMPTY); 2431 array_free (timer, EMPTY);
1396#if EV_PERIODIC_ENABLE 2432#if EV_PERIODIC_ENABLE
1397 array_free (periodic, EMPTY); 2433 array_free (periodic, EMPTY);
1398#endif 2434#endif
1399#if EV_FORK_ENABLE 2435#if EV_FORK_ENABLE
1400 array_free (fork, EMPTY); 2436 array_free (fork, EMPTY);
1401#endif 2437#endif
2438#if EV_CLEANUP_ENABLE
2439 array_free (cleanup, EMPTY);
2440#endif
1402 array_free (prepare, EMPTY); 2441 array_free (prepare, EMPTY);
1403 array_free (check, EMPTY); 2442 array_free (check, EMPTY);
1404#if EV_ASYNC_ENABLE 2443#if EV_ASYNC_ENABLE
1405 array_free (async, EMPTY); 2444 array_free (async, EMPTY);
1406#endif 2445#endif
1407 2446
1408 backend = 0; 2447 backend = 0;
2448
2449#if EV_MULTIPLICITY
2450 if (ev_is_default_loop (EV_A))
2451#endif
2452 ev_default_loop_ptr = 0;
2453#if EV_MULTIPLICITY
2454 else
2455 ev_free (EV_A);
2456#endif
1409} 2457}
1410 2458
1411#if EV_USE_INOTIFY 2459#if EV_USE_INOTIFY
1412void inline_size infy_fork (EV_P); 2460inline_size void infy_fork (EV_P);
1413#endif 2461#endif
1414 2462
1415void inline_size 2463inline_size void
1416loop_fork (EV_P) 2464loop_fork (EV_P)
1417{ 2465{
1418#if EV_USE_PORT 2466#if EV_USE_PORT
1419 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2467 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1420#endif 2468#endif
… …
1426#endif 2474#endif
1427#if EV_USE_INOTIFY 2475#if EV_USE_INOTIFY
1428 infy_fork (EV_A); 2476 infy_fork (EV_A);
1429#endif 2477#endif
1430 2478
1431 if (ev_is_active (&pipeev)) 2479 if (ev_is_active (&pipe_w))
1432 { 2480 {
1433 /* this "locks" the handlers against writing to the pipe */ 2481 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1434 /* while we modify the fd vars */
1435 gotsig = 1;
1436#if EV_ASYNC_ENABLE
1437 gotasync = 1;
1438#endif
1439 2482
1440 ev_ref (EV_A); 2483 ev_ref (EV_A);
1441 ev_io_stop (EV_A_ &pipeev); 2484 ev_io_stop (EV_A_ &pipe_w);
1442 2485
1443#if EV_USE_EVENTFD 2486#if EV_USE_EVENTFD
1444 if (evfd >= 0) 2487 if (evfd >= 0)
1445 close (evfd); 2488 close (evfd);
1446#endif 2489#endif
1447 2490
1448 if (evpipe [0] >= 0) 2491 if (evpipe [0] >= 0)
1449 { 2492 {
1450 close (evpipe [0]); 2493 EV_WIN32_CLOSE_FD (evpipe [0]);
1451 close (evpipe [1]); 2494 EV_WIN32_CLOSE_FD (evpipe [1]);
1452 } 2495 }
1453 2496
2497#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1454 evpipe_init (EV_A); 2498 evpipe_init (EV_A);
1455 /* now iterate over everything, in case we missed something */ 2499 /* now iterate over everything, in case we missed something */
1456 pipecb (EV_A_ &pipeev, EV_READ); 2500 pipecb (EV_A_ &pipe_w, EV_READ);
2501#endif
1457 } 2502 }
1458 2503
1459 postfork = 0; 2504 postfork = 0;
1460} 2505}
1461 2506
1462#if EV_MULTIPLICITY 2507#if EV_MULTIPLICITY
2508
1463struct ev_loop * 2509struct ev_loop * ecb_cold
1464ev_loop_new (unsigned int flags) 2510ev_loop_new (unsigned int flags) EV_THROW
1465{ 2511{
1466 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2512 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1467 2513
1468 memset (loop, 0, sizeof (struct ev_loop)); 2514 memset (EV_A, 0, sizeof (struct ev_loop));
1469
1470 loop_init (EV_A_ flags); 2515 loop_init (EV_A_ flags);
1471 2516
1472 if (ev_backend (EV_A)) 2517 if (ev_backend (EV_A))
1473 return loop; 2518 return EV_A;
1474 2519
2520 ev_free (EV_A);
1475 return 0; 2521 return 0;
1476} 2522}
1477 2523
1478void 2524#endif /* multiplicity */
1479ev_loop_destroy (EV_P)
1480{
1481 loop_destroy (EV_A);
1482 ev_free (loop);
1483}
1484 2525
1485void 2526#if EV_VERIFY
1486ev_loop_fork (EV_P) 2527static void noinline ecb_cold
2528verify_watcher (EV_P_ W w)
1487{ 2529{
1488 postfork = 1; /* must be in line with ev_default_fork */ 2530 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2531
2532 if (w->pending)
2533 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2534}
2535
2536static void noinline ecb_cold
2537verify_heap (EV_P_ ANHE *heap, int N)
2538{
2539 int i;
2540
2541 for (i = HEAP0; i < N + HEAP0; ++i)
2542 {
2543 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2544 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2545 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2546
2547 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2548 }
2549}
2550
2551static void noinline ecb_cold
2552array_verify (EV_P_ W *ws, int cnt)
2553{
2554 while (cnt--)
2555 {
2556 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2557 verify_watcher (EV_A_ ws [cnt]);
2558 }
2559}
2560#endif
2561
2562#if EV_FEATURE_API
2563void ecb_cold
2564ev_verify (EV_P) EV_THROW
2565{
2566#if EV_VERIFY
2567 int i, j;
2568 WL w, w2;
2569
2570 assert (activecnt >= -1);
2571
2572 assert (fdchangemax >= fdchangecnt);
2573 for (i = 0; i < fdchangecnt; ++i)
2574 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2575
2576 assert (anfdmax >= 0);
2577 for (i = j = 0; i < anfdmax; ++i)
2578 for (w = w2 = anfds [i].head; w; w = w->next)
2579 {
2580 verify_watcher (EV_A_ (W)w);
2581
2582 if (++j & 1)
2583 w2 = w2->next;
2584
2585 assert (("libev: io watcher list contains a loop", w != w2));
2586 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2587 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2588 }
2589
2590 assert (timermax >= timercnt);
2591 verify_heap (EV_A_ timers, timercnt);
2592
2593#if EV_PERIODIC_ENABLE
2594 assert (periodicmax >= periodiccnt);
2595 verify_heap (EV_A_ periodics, periodiccnt);
2596#endif
2597
2598 for (i = NUMPRI; i--; )
2599 {
2600 assert (pendingmax [i] >= pendingcnt [i]);
2601#if EV_IDLE_ENABLE
2602 assert (idleall >= 0);
2603 assert (idlemax [i] >= idlecnt [i]);
2604 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2605#endif
2606 }
2607
2608#if EV_FORK_ENABLE
2609 assert (forkmax >= forkcnt);
2610 array_verify (EV_A_ (W *)forks, forkcnt);
2611#endif
2612
2613#if EV_CLEANUP_ENABLE
2614 assert (cleanupmax >= cleanupcnt);
2615 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2616#endif
2617
2618#if EV_ASYNC_ENABLE
2619 assert (asyncmax >= asynccnt);
2620 array_verify (EV_A_ (W *)asyncs, asynccnt);
2621#endif
2622
2623#if EV_PREPARE_ENABLE
2624 assert (preparemax >= preparecnt);
2625 array_verify (EV_A_ (W *)prepares, preparecnt);
2626#endif
2627
2628#if EV_CHECK_ENABLE
2629 assert (checkmax >= checkcnt);
2630 array_verify (EV_A_ (W *)checks, checkcnt);
2631#endif
2632
2633# if 0
2634#if EV_CHILD_ENABLE
2635 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2636 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2637#endif
2638# endif
2639#endif
1489} 2640}
1490#endif 2641#endif
1491 2642
1492#if EV_MULTIPLICITY 2643#if EV_MULTIPLICITY
1493struct ev_loop * 2644struct ev_loop * ecb_cold
1494ev_default_loop_init (unsigned int flags)
1495#else 2645#else
1496int 2646int
2647#endif
1497ev_default_loop (unsigned int flags) 2648ev_default_loop (unsigned int flags) EV_THROW
1498#endif
1499{ 2649{
1500 if (!ev_default_loop_ptr) 2650 if (!ev_default_loop_ptr)
1501 { 2651 {
1502#if EV_MULTIPLICITY 2652#if EV_MULTIPLICITY
1503 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2653 EV_P = ev_default_loop_ptr = &default_loop_struct;
1504#else 2654#else
1505 ev_default_loop_ptr = 1; 2655 ev_default_loop_ptr = 1;
1506#endif 2656#endif
1507 2657
1508 loop_init (EV_A_ flags); 2658 loop_init (EV_A_ flags);
1509 2659
1510 if (ev_backend (EV_A)) 2660 if (ev_backend (EV_A))
1511 { 2661 {
1512#ifndef _WIN32 2662#if EV_CHILD_ENABLE
1513 ev_signal_init (&childev, childcb, SIGCHLD); 2663 ev_signal_init (&childev, childcb, SIGCHLD);
1514 ev_set_priority (&childev, EV_MAXPRI); 2664 ev_set_priority (&childev, EV_MAXPRI);
1515 ev_signal_start (EV_A_ &childev); 2665 ev_signal_start (EV_A_ &childev);
1516 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2666 ev_unref (EV_A); /* child watcher should not keep loop alive */
1517#endif 2667#endif
… …
1522 2672
1523 return ev_default_loop_ptr; 2673 return ev_default_loop_ptr;
1524} 2674}
1525 2675
1526void 2676void
1527ev_default_destroy (void) 2677ev_loop_fork (EV_P) EV_THROW
1528{ 2678{
1529#if EV_MULTIPLICITY
1530 struct ev_loop *loop = ev_default_loop_ptr;
1531#endif
1532
1533#ifndef _WIN32
1534 ev_ref (EV_A); /* child watcher */
1535 ev_signal_stop (EV_A_ &childev);
1536#endif
1537
1538 loop_destroy (EV_A);
1539}
1540
1541void
1542ev_default_fork (void)
1543{
1544#if EV_MULTIPLICITY
1545 struct ev_loop *loop = ev_default_loop_ptr;
1546#endif
1547
1548 if (backend)
1549 postfork = 1; /* must be in line with ev_loop_fork */ 2679 postfork = 1; /* must be in line with ev_default_fork */
1550} 2680}
1551 2681
1552/*****************************************************************************/ 2682/*****************************************************************************/
1553 2683
1554void 2684void
1555ev_invoke (EV_P_ void *w, int revents) 2685ev_invoke (EV_P_ void *w, int revents)
1556{ 2686{
1557 EV_CB_INVOKE ((W)w, revents); 2687 EV_CB_INVOKE ((W)w, revents);
1558} 2688}
1559 2689
1560void inline_speed 2690unsigned int
1561call_pending (EV_P) 2691ev_pending_count (EV_P) EV_THROW
1562{ 2692{
1563 int pri; 2693 int pri;
2694 unsigned int count = 0;
1564 2695
1565 for (pri = NUMPRI; pri--; ) 2696 for (pri = NUMPRI; pri--; )
2697 count += pendingcnt [pri];
2698
2699 return count;
2700}
2701
2702void noinline
2703ev_invoke_pending (EV_P)
2704{
2705 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1566 while (pendingcnt [pri]) 2706 while (pendingcnt [pendingpri])
1567 { 2707 {
1568 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2708 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1569 2709
1570 if (expect_true (p->w))
1571 {
1572 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1573
1574 p->w->pending = 0; 2710 p->w->pending = 0;
1575 EV_CB_INVOKE (p->w, p->events); 2711 EV_CB_INVOKE (p->w, p->events);
1576 } 2712 EV_FREQUENT_CHECK;
1577 } 2713 }
1578} 2714}
1579 2715
1580#if EV_IDLE_ENABLE 2716#if EV_IDLE_ENABLE
1581void inline_size 2717/* make idle watchers pending. this handles the "call-idle */
2718/* only when higher priorities are idle" logic */
2719inline_size void
1582idle_reify (EV_P) 2720idle_reify (EV_P)
1583{ 2721{
1584 if (expect_false (idleall)) 2722 if (expect_false (idleall))
1585 { 2723 {
1586 int pri; 2724 int pri;
… …
1598 } 2736 }
1599 } 2737 }
1600} 2738}
1601#endif 2739#endif
1602 2740
1603void inline_size 2741/* make timers pending */
2742inline_size void
1604timers_reify (EV_P) 2743timers_reify (EV_P)
1605{ 2744{
2745 EV_FREQUENT_CHECK;
2746
1606 while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now) 2747 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1607 { 2748 {
1608 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2749 do
1609
1610 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1611
1612 /* first reschedule or stop timer */
1613 if (w->repeat)
1614 { 2750 {
2751 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2752
2753 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2754
2755 /* first reschedule or stop timer */
2756 if (w->repeat)
2757 {
1615 ev_at (w) += w->repeat; 2758 ev_at (w) += w->repeat;
1616 if (ev_at (w) < mn_now) 2759 if (ev_at (w) < mn_now)
1617 ev_at (w) = mn_now; 2760 ev_at (w) = mn_now;
1618 2761
1619 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2762 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1620 2763
1621 ANHE_at_set (timers [HEAP0]); 2764 ANHE_at_cache (timers [HEAP0]);
1622 downheap (timers, timercnt, HEAP0); 2765 downheap (timers, timercnt, HEAP0);
2766 }
2767 else
2768 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2769
2770 EV_FREQUENT_CHECK;
2771 feed_reverse (EV_A_ (W)w);
1623 } 2772 }
1624 else 2773 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1625 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1626 2774
1627 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2775 feed_reverse_done (EV_A_ EV_TIMER);
1628 } 2776 }
1629} 2777}
1630 2778
1631#if EV_PERIODIC_ENABLE 2779#if EV_PERIODIC_ENABLE
1632void inline_size 2780
2781static void noinline
2782periodic_recalc (EV_P_ ev_periodic *w)
2783{
2784 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2785 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2786
2787 /* the above almost always errs on the low side */
2788 while (at <= ev_rt_now)
2789 {
2790 ev_tstamp nat = at + w->interval;
2791
2792 /* when resolution fails us, we use ev_rt_now */
2793 if (expect_false (nat == at))
2794 {
2795 at = ev_rt_now;
2796 break;
2797 }
2798
2799 at = nat;
2800 }
2801
2802 ev_at (w) = at;
2803}
2804
2805/* make periodics pending */
2806inline_size void
1633periodics_reify (EV_P) 2807periodics_reify (EV_P)
1634{ 2808{
2809 EV_FREQUENT_CHECK;
2810
1635 while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now) 2811 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1636 { 2812 {
1637 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2813 int feed_count = 0;
1638 2814
1639 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2815 do
1640
1641 /* first reschedule or stop timer */
1642 if (w->reschedule_cb)
1643 { 2816 {
2817 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2818
2819 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2820
2821 /* first reschedule or stop timer */
2822 if (w->reschedule_cb)
2823 {
1644 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 2824 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1645 2825
1646 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); 2826 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1647 2827
1648 ANHE_at_set (periodics [HEAP0]); 2828 ANHE_at_cache (periodics [HEAP0]);
1649 downheap (periodics, periodiccnt, HEAP0); 2829 downheap (periodics, periodiccnt, HEAP0);
2830 }
2831 else if (w->interval)
2832 {
2833 periodic_recalc (EV_A_ w);
2834 ANHE_at_cache (periodics [HEAP0]);
2835 downheap (periodics, periodiccnt, HEAP0);
2836 }
2837 else
2838 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2839
2840 EV_FREQUENT_CHECK;
2841 feed_reverse (EV_A_ (W)w);
1650 } 2842 }
1651 else if (w->interval) 2843 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1652 {
1653 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1654 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1655 2844
1656 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1657
1658 ANHE_at_set (periodics [HEAP0]);
1659 downheap (periodics, periodiccnt, HEAP0);
1660 }
1661 else
1662 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1663
1664 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2845 feed_reverse_done (EV_A_ EV_PERIODIC);
1665 } 2846 }
1666} 2847}
1667 2848
2849/* simply recalculate all periodics */
2850/* TODO: maybe ensure that at least one event happens when jumping forward? */
1668static void noinline 2851static void noinline ecb_cold
1669periodics_reschedule (EV_P) 2852periodics_reschedule (EV_P)
1670{ 2853{
1671 int i; 2854 int i;
1672 2855
1673 /* adjust periodics after time jump */ 2856 /* adjust periodics after time jump */
… …
1676 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2859 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1677 2860
1678 if (w->reschedule_cb) 2861 if (w->reschedule_cb)
1679 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2862 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1680 else if (w->interval) 2863 else if (w->interval)
1681 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2864 periodic_recalc (EV_A_ w);
1682 2865
1683 ANHE_at_set (periodics [i]); 2866 ANHE_at_cache (periodics [i]);
1684 } 2867 }
1685 2868
1686 /* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */ 2869 reheap (periodics, periodiccnt);
1687 /* also, this is easy and corretc for both 2-heaps and 4-heaps */ 2870}
2871#endif
2872
2873/* adjust all timers by a given offset */
2874static void noinline ecb_cold
2875timers_reschedule (EV_P_ ev_tstamp adjust)
2876{
2877 int i;
2878
1688 for (i = 0; i < periodiccnt; ++i) 2879 for (i = 0; i < timercnt; ++i)
1689 upheap (periodics, i + HEAP0); 2880 {
2881 ANHE *he = timers + i + HEAP0;
2882 ANHE_w (*he)->at += adjust;
2883 ANHE_at_cache (*he);
2884 }
1690} 2885}
1691#endif
1692 2886
1693void inline_speed 2887/* fetch new monotonic and realtime times from the kernel */
2888/* also detect if there was a timejump, and act accordingly */
2889inline_speed void
1694time_update (EV_P_ ev_tstamp max_block) 2890time_update (EV_P_ ev_tstamp max_block)
1695{ 2891{
1696 int i;
1697
1698#if EV_USE_MONOTONIC 2892#if EV_USE_MONOTONIC
1699 if (expect_true (have_monotonic)) 2893 if (expect_true (have_monotonic))
1700 { 2894 {
2895 int i;
1701 ev_tstamp odiff = rtmn_diff; 2896 ev_tstamp odiff = rtmn_diff;
1702 2897
1703 mn_now = get_clock (); 2898 mn_now = get_clock ();
1704 2899
1705 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2900 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1721 * doesn't hurt either as we only do this on time-jumps or 2916 * doesn't hurt either as we only do this on time-jumps or
1722 * in the unlikely event of having been preempted here. 2917 * in the unlikely event of having been preempted here.
1723 */ 2918 */
1724 for (i = 4; --i; ) 2919 for (i = 4; --i; )
1725 { 2920 {
2921 ev_tstamp diff;
1726 rtmn_diff = ev_rt_now - mn_now; 2922 rtmn_diff = ev_rt_now - mn_now;
1727 2923
2924 diff = odiff - rtmn_diff;
2925
1728 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2926 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1729 return; /* all is well */ 2927 return; /* all is well */
1730 2928
1731 ev_rt_now = ev_time (); 2929 ev_rt_now = ev_time ();
1732 mn_now = get_clock (); 2930 mn_now = get_clock ();
1733 now_floor = mn_now; 2931 now_floor = mn_now;
1734 } 2932 }
1735 2933
2934 /* no timer adjustment, as the monotonic clock doesn't jump */
2935 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1736# if EV_PERIODIC_ENABLE 2936# if EV_PERIODIC_ENABLE
1737 periodics_reschedule (EV_A); 2937 periodics_reschedule (EV_A);
1738# endif 2938# endif
1739 /* no timer adjustment, as the monotonic clock doesn't jump */
1740 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1741 } 2939 }
1742 else 2940 else
1743#endif 2941#endif
1744 { 2942 {
1745 ev_rt_now = ev_time (); 2943 ev_rt_now = ev_time ();
1746 2944
1747 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2945 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1748 { 2946 {
2947 /* adjust timers. this is easy, as the offset is the same for all of them */
2948 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1749#if EV_PERIODIC_ENABLE 2949#if EV_PERIODIC_ENABLE
1750 periodics_reschedule (EV_A); 2950 periodics_reschedule (EV_A);
1751#endif 2951#endif
1752 /* adjust timers. this is easy, as the offset is the same for all of them */
1753 for (i = 0; i < timercnt; ++i)
1754 {
1755 ANHE *he = timers + i + HEAP0;
1756 ANHE_w (*he)->at += ev_rt_now - mn_now;
1757 ANHE_at_set (*he);
1758 }
1759 } 2952 }
1760 2953
1761 mn_now = ev_rt_now; 2954 mn_now = ev_rt_now;
1762 } 2955 }
1763} 2956}
1764 2957
1765void 2958int
1766ev_ref (EV_P)
1767{
1768 ++activecnt;
1769}
1770
1771void
1772ev_unref (EV_P)
1773{
1774 --activecnt;
1775}
1776
1777static int loop_done;
1778
1779void
1780ev_loop (EV_P_ int flags) 2959ev_run (EV_P_ int flags)
1781{ 2960{
2961#if EV_FEATURE_API
2962 ++loop_depth;
2963#endif
2964
2965 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2966
1782 loop_done = EVUNLOOP_CANCEL; 2967 loop_done = EVBREAK_CANCEL;
1783 2968
1784 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2969 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1785 2970
1786 do 2971 do
1787 { 2972 {
2973#if EV_VERIFY >= 2
2974 ev_verify (EV_A);
2975#endif
2976
1788#ifndef _WIN32 2977#ifndef _WIN32
1789 if (expect_false (curpid)) /* penalise the forking check even more */ 2978 if (expect_false (curpid)) /* penalise the forking check even more */
1790 if (expect_false (getpid () != curpid)) 2979 if (expect_false (getpid () != curpid))
1791 { 2980 {
1792 curpid = getpid (); 2981 curpid = getpid ();
… …
1798 /* we might have forked, so queue fork handlers */ 2987 /* we might have forked, so queue fork handlers */
1799 if (expect_false (postfork)) 2988 if (expect_false (postfork))
1800 if (forkcnt) 2989 if (forkcnt)
1801 { 2990 {
1802 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2991 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1803 call_pending (EV_A); 2992 EV_INVOKE_PENDING;
1804 } 2993 }
1805#endif 2994#endif
1806 2995
2996#if EV_PREPARE_ENABLE
1807 /* queue prepare watchers (and execute them) */ 2997 /* queue prepare watchers (and execute them) */
1808 if (expect_false (preparecnt)) 2998 if (expect_false (preparecnt))
1809 { 2999 {
1810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3000 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1811 call_pending (EV_A); 3001 EV_INVOKE_PENDING;
1812 } 3002 }
3003#endif
1813 3004
1814 if (expect_false (!activecnt)) 3005 if (expect_false (loop_done))
1815 break; 3006 break;
1816 3007
1817 /* we might have forked, so reify kernel state if necessary */ 3008 /* we might have forked, so reify kernel state if necessary */
1818 if (expect_false (postfork)) 3009 if (expect_false (postfork))
1819 loop_fork (EV_A); 3010 loop_fork (EV_A);
… …
1824 /* calculate blocking time */ 3015 /* calculate blocking time */
1825 { 3016 {
1826 ev_tstamp waittime = 0.; 3017 ev_tstamp waittime = 0.;
1827 ev_tstamp sleeptime = 0.; 3018 ev_tstamp sleeptime = 0.;
1828 3019
3020 /* remember old timestamp for io_blocktime calculation */
3021 ev_tstamp prev_mn_now = mn_now;
3022
3023 /* update time to cancel out callback processing overhead */
3024 time_update (EV_A_ 1e100);
3025
3026 /* from now on, we want a pipe-wake-up */
3027 pipe_write_wanted = 1;
3028
3029 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3030
1829 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3031 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1830 { 3032 {
1831 /* update time to cancel out callback processing overhead */
1832 time_update (EV_A_ 1e100);
1833
1834 waittime = MAX_BLOCKTIME; 3033 waittime = MAX_BLOCKTIME;
1835 3034
1836 if (timercnt) 3035 if (timercnt)
1837 { 3036 {
1838 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3037 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1839 if (waittime > to) waittime = to; 3038 if (waittime > to) waittime = to;
1840 } 3039 }
1841 3040
1842#if EV_PERIODIC_ENABLE 3041#if EV_PERIODIC_ENABLE
1843 if (periodiccnt) 3042 if (periodiccnt)
1844 { 3043 {
1845 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3044 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1846 if (waittime > to) waittime = to; 3045 if (waittime > to) waittime = to;
1847 } 3046 }
1848#endif 3047#endif
1849 3048
3049 /* don't let timeouts decrease the waittime below timeout_blocktime */
1850 if (expect_false (waittime < timeout_blocktime)) 3050 if (expect_false (waittime < timeout_blocktime))
1851 waittime = timeout_blocktime; 3051 waittime = timeout_blocktime;
1852 3052
1853 sleeptime = waittime - backend_fudge; 3053 /* at this point, we NEED to wait, so we have to ensure */
3054 /* to pass a minimum nonzero value to the backend */
3055 if (expect_false (waittime < backend_mintime))
3056 waittime = backend_mintime;
1854 3057
3058 /* extra check because io_blocktime is commonly 0 */
1855 if (expect_true (sleeptime > io_blocktime)) 3059 if (expect_false (io_blocktime))
1856 sleeptime = io_blocktime;
1857
1858 if (sleeptime)
1859 { 3060 {
3061 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3062
3063 if (sleeptime > waittime - backend_mintime)
3064 sleeptime = waittime - backend_mintime;
3065
3066 if (expect_true (sleeptime > 0.))
3067 {
1860 ev_sleep (sleeptime); 3068 ev_sleep (sleeptime);
1861 waittime -= sleeptime; 3069 waittime -= sleeptime;
3070 }
1862 } 3071 }
1863 } 3072 }
1864 3073
3074#if EV_FEATURE_API
1865 ++loop_count; 3075 ++loop_count;
3076#endif
3077 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1866 backend_poll (EV_A_ waittime); 3078 backend_poll (EV_A_ waittime);
3079 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3080
3081 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3082
3083 if (pipe_write_skipped)
3084 {
3085 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3086 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3087 }
3088
1867 3089
1868 /* update ev_rt_now, do magic */ 3090 /* update ev_rt_now, do magic */
1869 time_update (EV_A_ waittime + sleeptime); 3091 time_update (EV_A_ waittime + sleeptime);
1870 } 3092 }
1871 3093
… …
1878#if EV_IDLE_ENABLE 3100#if EV_IDLE_ENABLE
1879 /* queue idle watchers unless other events are pending */ 3101 /* queue idle watchers unless other events are pending */
1880 idle_reify (EV_A); 3102 idle_reify (EV_A);
1881#endif 3103#endif
1882 3104
3105#if EV_CHECK_ENABLE
1883 /* queue check watchers, to be executed first */ 3106 /* queue check watchers, to be executed first */
1884 if (expect_false (checkcnt)) 3107 if (expect_false (checkcnt))
1885 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3108 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3109#endif
1886 3110
1887 call_pending (EV_A); 3111 EV_INVOKE_PENDING;
1888 } 3112 }
1889 while (expect_true ( 3113 while (expect_true (
1890 activecnt 3114 activecnt
1891 && !loop_done 3115 && !loop_done
1892 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3116 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1893 )); 3117 ));
1894 3118
1895 if (loop_done == EVUNLOOP_ONE) 3119 if (loop_done == EVBREAK_ONE)
1896 loop_done = EVUNLOOP_CANCEL; 3120 loop_done = EVBREAK_CANCEL;
3121
3122#if EV_FEATURE_API
3123 --loop_depth;
3124#endif
3125
3126 return activecnt;
1897} 3127}
1898 3128
1899void 3129void
1900ev_unloop (EV_P_ int how) 3130ev_break (EV_P_ int how) EV_THROW
1901{ 3131{
1902 loop_done = how; 3132 loop_done = how;
1903} 3133}
1904 3134
3135void
3136ev_ref (EV_P) EV_THROW
3137{
3138 ++activecnt;
3139}
3140
3141void
3142ev_unref (EV_P) EV_THROW
3143{
3144 --activecnt;
3145}
3146
3147void
3148ev_now_update (EV_P) EV_THROW
3149{
3150 time_update (EV_A_ 1e100);
3151}
3152
3153void
3154ev_suspend (EV_P) EV_THROW
3155{
3156 ev_now_update (EV_A);
3157}
3158
3159void
3160ev_resume (EV_P) EV_THROW
3161{
3162 ev_tstamp mn_prev = mn_now;
3163
3164 ev_now_update (EV_A);
3165 timers_reschedule (EV_A_ mn_now - mn_prev);
3166#if EV_PERIODIC_ENABLE
3167 /* TODO: really do this? */
3168 periodics_reschedule (EV_A);
3169#endif
3170}
3171
1905/*****************************************************************************/ 3172/*****************************************************************************/
3173/* singly-linked list management, used when the expected list length is short */
1906 3174
1907void inline_size 3175inline_size void
1908wlist_add (WL *head, WL elem) 3176wlist_add (WL *head, WL elem)
1909{ 3177{
1910 elem->next = *head; 3178 elem->next = *head;
1911 *head = elem; 3179 *head = elem;
1912} 3180}
1913 3181
1914void inline_size 3182inline_size void
1915wlist_del (WL *head, WL elem) 3183wlist_del (WL *head, WL elem)
1916{ 3184{
1917 while (*head) 3185 while (*head)
1918 { 3186 {
1919 if (*head == elem) 3187 if (expect_true (*head == elem))
1920 { 3188 {
1921 *head = elem->next; 3189 *head = elem->next;
1922 return; 3190 break;
1923 } 3191 }
1924 3192
1925 head = &(*head)->next; 3193 head = &(*head)->next;
1926 } 3194 }
1927} 3195}
1928 3196
1929void inline_speed 3197/* internal, faster, version of ev_clear_pending */
3198inline_speed void
1930clear_pending (EV_P_ W w) 3199clear_pending (EV_P_ W w)
1931{ 3200{
1932 if (w->pending) 3201 if (w->pending)
1933 { 3202 {
1934 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3203 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1935 w->pending = 0; 3204 w->pending = 0;
1936 } 3205 }
1937} 3206}
1938 3207
1939int 3208int
1940ev_clear_pending (EV_P_ void *w) 3209ev_clear_pending (EV_P_ void *w) EV_THROW
1941{ 3210{
1942 W w_ = (W)w; 3211 W w_ = (W)w;
1943 int pending = w_->pending; 3212 int pending = w_->pending;
1944 3213
1945 if (expect_true (pending)) 3214 if (expect_true (pending))
1946 { 3215 {
1947 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3216 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3217 p->w = (W)&pending_w;
1948 w_->pending = 0; 3218 w_->pending = 0;
1949 p->w = 0;
1950 return p->events; 3219 return p->events;
1951 } 3220 }
1952 else 3221 else
1953 return 0; 3222 return 0;
1954} 3223}
1955 3224
1956void inline_size 3225inline_size void
1957pri_adjust (EV_P_ W w) 3226pri_adjust (EV_P_ W w)
1958{ 3227{
1959 int pri = w->priority; 3228 int pri = ev_priority (w);
1960 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3229 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1961 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3230 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1962 w->priority = pri; 3231 ev_set_priority (w, pri);
1963} 3232}
1964 3233
1965void inline_speed 3234inline_speed void
1966ev_start (EV_P_ W w, int active) 3235ev_start (EV_P_ W w, int active)
1967{ 3236{
1968 pri_adjust (EV_A_ w); 3237 pri_adjust (EV_A_ w);
1969 w->active = active; 3238 w->active = active;
1970 ev_ref (EV_A); 3239 ev_ref (EV_A);
1971} 3240}
1972 3241
1973void inline_size 3242inline_size void
1974ev_stop (EV_P_ W w) 3243ev_stop (EV_P_ W w)
1975{ 3244{
1976 ev_unref (EV_A); 3245 ev_unref (EV_A);
1977 w->active = 0; 3246 w->active = 0;
1978} 3247}
1979 3248
1980/*****************************************************************************/ 3249/*****************************************************************************/
1981 3250
1982void noinline 3251void noinline
1983ev_io_start (EV_P_ ev_io *w) 3252ev_io_start (EV_P_ ev_io *w) EV_THROW
1984{ 3253{
1985 int fd = w->fd; 3254 int fd = w->fd;
1986 3255
1987 if (expect_false (ev_is_active (w))) 3256 if (expect_false (ev_is_active (w)))
1988 return; 3257 return;
1989 3258
1990 assert (("ev_io_start called with negative fd", fd >= 0)); 3259 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3260 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3261
3262 EV_FREQUENT_CHECK;
1991 3263
1992 ev_start (EV_A_ (W)w, 1); 3264 ev_start (EV_A_ (W)w, 1);
1993 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3265 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1994 wlist_add (&anfds[fd].head, (WL)w); 3266 wlist_add (&anfds[fd].head, (WL)w);
1995 3267
3268 /* common bug, apparently */
3269 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3270
1996 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3271 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1997 w->events &= ~EV_IOFDSET; 3272 w->events &= ~EV__IOFDSET;
3273
3274 EV_FREQUENT_CHECK;
1998} 3275}
1999 3276
2000void noinline 3277void noinline
2001ev_io_stop (EV_P_ ev_io *w) 3278ev_io_stop (EV_P_ ev_io *w) EV_THROW
2002{ 3279{
2003 clear_pending (EV_A_ (W)w); 3280 clear_pending (EV_A_ (W)w);
2004 if (expect_false (!ev_is_active (w))) 3281 if (expect_false (!ev_is_active (w)))
2005 return; 3282 return;
2006 3283
2007 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3284 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3285
3286 EV_FREQUENT_CHECK;
2008 3287
2009 wlist_del (&anfds[w->fd].head, (WL)w); 3288 wlist_del (&anfds[w->fd].head, (WL)w);
2010 ev_stop (EV_A_ (W)w); 3289 ev_stop (EV_A_ (W)w);
2011 3290
2012 fd_change (EV_A_ w->fd, 1); 3291 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3292
3293 EV_FREQUENT_CHECK;
2013} 3294}
2014 3295
2015void noinline 3296void noinline
2016ev_timer_start (EV_P_ ev_timer *w) 3297ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2017{ 3298{
2018 if (expect_false (ev_is_active (w))) 3299 if (expect_false (ev_is_active (w)))
2019 return; 3300 return;
2020 3301
2021 ev_at (w) += mn_now; 3302 ev_at (w) += mn_now;
2022 3303
2023 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3304 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2024 3305
3306 EV_FREQUENT_CHECK;
3307
3308 ++timercnt;
2025 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 3309 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2026 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3310 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2027 ANHE_w (timers [ev_active (w)]) = (WT)w; 3311 ANHE_w (timers [ev_active (w)]) = (WT)w;
2028 ANHE_at_set (timers [ev_active (w)]); 3312 ANHE_at_cache (timers [ev_active (w)]);
2029 upheap (timers, ev_active (w)); 3313 upheap (timers, ev_active (w));
2030 3314
3315 EV_FREQUENT_CHECK;
3316
2031 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3317 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2032} 3318}
2033 3319
2034void noinline 3320void noinline
2035ev_timer_stop (EV_P_ ev_timer *w) 3321ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2036{ 3322{
2037 clear_pending (EV_A_ (W)w); 3323 clear_pending (EV_A_ (W)w);
2038 if (expect_false (!ev_is_active (w))) 3324 if (expect_false (!ev_is_active (w)))
2039 return; 3325 return;
2040 3326
3327 EV_FREQUENT_CHECK;
3328
2041 { 3329 {
2042 int active = ev_active (w); 3330 int active = ev_active (w);
2043 3331
2044 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3332 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2045 3333
3334 --timercnt;
3335
2046 if (expect_true (active < timercnt + HEAP0 - 1)) 3336 if (expect_true (active < timercnt + HEAP0))
2047 { 3337 {
2048 timers [active] = timers [timercnt + HEAP0 - 1]; 3338 timers [active] = timers [timercnt + HEAP0];
2049 adjustheap (timers, timercnt, active); 3339 adjustheap (timers, timercnt, active);
2050 } 3340 }
2051
2052 --timercnt;
2053 } 3341 }
2054 3342
2055 ev_at (w) -= mn_now; 3343 ev_at (w) -= mn_now;
2056 3344
2057 ev_stop (EV_A_ (W)w); 3345 ev_stop (EV_A_ (W)w);
3346
3347 EV_FREQUENT_CHECK;
2058} 3348}
2059 3349
2060void noinline 3350void noinline
2061ev_timer_again (EV_P_ ev_timer *w) 3351ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2062{ 3352{
3353 EV_FREQUENT_CHECK;
3354
3355 clear_pending (EV_A_ (W)w);
3356
2063 if (ev_is_active (w)) 3357 if (ev_is_active (w))
2064 { 3358 {
2065 if (w->repeat) 3359 if (w->repeat)
2066 { 3360 {
2067 ev_at (w) = mn_now + w->repeat; 3361 ev_at (w) = mn_now + w->repeat;
2068 ANHE_at_set (timers [ev_active (w)]); 3362 ANHE_at_cache (timers [ev_active (w)]);
2069 adjustheap (timers, timercnt, ev_active (w)); 3363 adjustheap (timers, timercnt, ev_active (w));
2070 } 3364 }
2071 else 3365 else
2072 ev_timer_stop (EV_A_ w); 3366 ev_timer_stop (EV_A_ w);
2073 } 3367 }
2074 else if (w->repeat) 3368 else if (w->repeat)
2075 { 3369 {
2076 ev_at (w) = w->repeat; 3370 ev_at (w) = w->repeat;
2077 ev_timer_start (EV_A_ w); 3371 ev_timer_start (EV_A_ w);
2078 } 3372 }
3373
3374 EV_FREQUENT_CHECK;
3375}
3376
3377ev_tstamp
3378ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3379{
3380 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2079} 3381}
2080 3382
2081#if EV_PERIODIC_ENABLE 3383#if EV_PERIODIC_ENABLE
2082void noinline 3384void noinline
2083ev_periodic_start (EV_P_ ev_periodic *w) 3385ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2084{ 3386{
2085 if (expect_false (ev_is_active (w))) 3387 if (expect_false (ev_is_active (w)))
2086 return; 3388 return;
2087 3389
2088 if (w->reschedule_cb) 3390 if (w->reschedule_cb)
2089 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3391 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2090 else if (w->interval) 3392 else if (w->interval)
2091 { 3393 {
2092 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3394 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2093 /* this formula differs from the one in periodic_reify because we do not always round up */ 3395 periodic_recalc (EV_A_ w);
2094 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2095 } 3396 }
2096 else 3397 else
2097 ev_at (w) = w->offset; 3398 ev_at (w) = w->offset;
2098 3399
3400 EV_FREQUENT_CHECK;
3401
3402 ++periodiccnt;
2099 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 3403 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2100 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 3404 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2101 ANHE_w (periodics [ev_active (w)]) = (WT)w; 3405 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2102 ANHE_at_set (periodics [ev_active (w)]); 3406 ANHE_at_cache (periodics [ev_active (w)]);
2103 upheap (periodics, ev_active (w)); 3407 upheap (periodics, ev_active (w));
2104 3408
3409 EV_FREQUENT_CHECK;
3410
2105 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3411 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2106} 3412}
2107 3413
2108void noinline 3414void noinline
2109ev_periodic_stop (EV_P_ ev_periodic *w) 3415ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2110{ 3416{
2111 clear_pending (EV_A_ (W)w); 3417 clear_pending (EV_A_ (W)w);
2112 if (expect_false (!ev_is_active (w))) 3418 if (expect_false (!ev_is_active (w)))
2113 return; 3419 return;
2114 3420
3421 EV_FREQUENT_CHECK;
3422
2115 { 3423 {
2116 int active = ev_active (w); 3424 int active = ev_active (w);
2117 3425
2118 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3426 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2119 3427
3428 --periodiccnt;
3429
2120 if (expect_true (active < periodiccnt + HEAP0 - 1)) 3430 if (expect_true (active < periodiccnt + HEAP0))
2121 { 3431 {
2122 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 3432 periodics [active] = periodics [periodiccnt + HEAP0];
2123 adjustheap (periodics, periodiccnt, active); 3433 adjustheap (periodics, periodiccnt, active);
2124 } 3434 }
2125
2126 --periodiccnt;
2127 } 3435 }
2128 3436
2129 ev_stop (EV_A_ (W)w); 3437 ev_stop (EV_A_ (W)w);
3438
3439 EV_FREQUENT_CHECK;
2130} 3440}
2131 3441
2132void noinline 3442void noinline
2133ev_periodic_again (EV_P_ ev_periodic *w) 3443ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2134{ 3444{
2135 /* TODO: use adjustheap and recalculation */ 3445 /* TODO: use adjustheap and recalculation */
2136 ev_periodic_stop (EV_A_ w); 3446 ev_periodic_stop (EV_A_ w);
2137 ev_periodic_start (EV_A_ w); 3447 ev_periodic_start (EV_A_ w);
2138} 3448}
… …
2140 3450
2141#ifndef SA_RESTART 3451#ifndef SA_RESTART
2142# define SA_RESTART 0 3452# define SA_RESTART 0
2143#endif 3453#endif
2144 3454
3455#if EV_SIGNAL_ENABLE
3456
2145void noinline 3457void noinline
2146ev_signal_start (EV_P_ ev_signal *w) 3458ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2147{ 3459{
2148#if EV_MULTIPLICITY
2149 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2150#endif
2151 if (expect_false (ev_is_active (w))) 3460 if (expect_false (ev_is_active (w)))
2152 return; 3461 return;
2153 3462
2154 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3463 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2155 3464
2156 evpipe_init (EV_A); 3465#if EV_MULTIPLICITY
3466 assert (("libev: a signal must not be attached to two different loops",
3467 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2157 3468
3469 signals [w->signum - 1].loop = EV_A;
3470#endif
3471
3472 EV_FREQUENT_CHECK;
3473
3474#if EV_USE_SIGNALFD
3475 if (sigfd == -2)
2158 { 3476 {
2159#ifndef _WIN32 3477 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2160 sigset_t full, prev; 3478 if (sigfd < 0 && errno == EINVAL)
2161 sigfillset (&full); 3479 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2162 sigprocmask (SIG_SETMASK, &full, &prev);
2163#endif
2164 3480
2165 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3481 if (sigfd >= 0)
3482 {
3483 fd_intern (sigfd); /* doing it twice will not hurt */
2166 3484
2167#ifndef _WIN32 3485 sigemptyset (&sigfd_set);
2168 sigprocmask (SIG_SETMASK, &prev, 0); 3486
2169#endif 3487 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3488 ev_set_priority (&sigfd_w, EV_MAXPRI);
3489 ev_io_start (EV_A_ &sigfd_w);
3490 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3491 }
2170 } 3492 }
3493
3494 if (sigfd >= 0)
3495 {
3496 /* TODO: check .head */
3497 sigaddset (&sigfd_set, w->signum);
3498 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3499
3500 signalfd (sigfd, &sigfd_set, 0);
3501 }
3502#endif
2171 3503
2172 ev_start (EV_A_ (W)w, 1); 3504 ev_start (EV_A_ (W)w, 1);
2173 wlist_add (&signals [w->signum - 1].head, (WL)w); 3505 wlist_add (&signals [w->signum - 1].head, (WL)w);
2174 3506
2175 if (!((WL)w)->next) 3507 if (!((WL)w)->next)
3508# if EV_USE_SIGNALFD
3509 if (sigfd < 0) /*TODO*/
3510# endif
2176 { 3511 {
2177#if _WIN32 3512# ifdef _WIN32
3513 evpipe_init (EV_A);
3514
2178 signal (w->signum, ev_sighandler); 3515 signal (w->signum, ev_sighandler);
2179#else 3516# else
2180 struct sigaction sa; 3517 struct sigaction sa;
3518
3519 evpipe_init (EV_A);
3520
2181 sa.sa_handler = ev_sighandler; 3521 sa.sa_handler = ev_sighandler;
2182 sigfillset (&sa.sa_mask); 3522 sigfillset (&sa.sa_mask);
2183 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3523 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2184 sigaction (w->signum, &sa, 0); 3524 sigaction (w->signum, &sa, 0);
3525
3526 if (origflags & EVFLAG_NOSIGMASK)
3527 {
3528 sigemptyset (&sa.sa_mask);
3529 sigaddset (&sa.sa_mask, w->signum);
3530 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3531 }
2185#endif 3532#endif
2186 } 3533 }
3534
3535 EV_FREQUENT_CHECK;
2187} 3536}
2188 3537
2189void noinline 3538void noinline
2190ev_signal_stop (EV_P_ ev_signal *w) 3539ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2191{ 3540{
2192 clear_pending (EV_A_ (W)w); 3541 clear_pending (EV_A_ (W)w);
2193 if (expect_false (!ev_is_active (w))) 3542 if (expect_false (!ev_is_active (w)))
2194 return; 3543 return;
2195 3544
3545 EV_FREQUENT_CHECK;
3546
2196 wlist_del (&signals [w->signum - 1].head, (WL)w); 3547 wlist_del (&signals [w->signum - 1].head, (WL)w);
2197 ev_stop (EV_A_ (W)w); 3548 ev_stop (EV_A_ (W)w);
2198 3549
2199 if (!signals [w->signum - 1].head) 3550 if (!signals [w->signum - 1].head)
3551 {
3552#if EV_MULTIPLICITY
3553 signals [w->signum - 1].loop = 0; /* unattach from signal */
3554#endif
3555#if EV_USE_SIGNALFD
3556 if (sigfd >= 0)
3557 {
3558 sigset_t ss;
3559
3560 sigemptyset (&ss);
3561 sigaddset (&ss, w->signum);
3562 sigdelset (&sigfd_set, w->signum);
3563
3564 signalfd (sigfd, &sigfd_set, 0);
3565 sigprocmask (SIG_UNBLOCK, &ss, 0);
3566 }
3567 else
3568#endif
2200 signal (w->signum, SIG_DFL); 3569 signal (w->signum, SIG_DFL);
3570 }
3571
3572 EV_FREQUENT_CHECK;
2201} 3573}
3574
3575#endif
3576
3577#if EV_CHILD_ENABLE
2202 3578
2203void 3579void
2204ev_child_start (EV_P_ ev_child *w) 3580ev_child_start (EV_P_ ev_child *w) EV_THROW
2205{ 3581{
2206#if EV_MULTIPLICITY 3582#if EV_MULTIPLICITY
2207 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3583 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2208#endif 3584#endif
2209 if (expect_false (ev_is_active (w))) 3585 if (expect_false (ev_is_active (w)))
2210 return; 3586 return;
2211 3587
3588 EV_FREQUENT_CHECK;
3589
2212 ev_start (EV_A_ (W)w, 1); 3590 ev_start (EV_A_ (W)w, 1);
2213 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3591 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
3592
3593 EV_FREQUENT_CHECK;
2214} 3594}
2215 3595
2216void 3596void
2217ev_child_stop (EV_P_ ev_child *w) 3597ev_child_stop (EV_P_ ev_child *w) EV_THROW
2218{ 3598{
2219 clear_pending (EV_A_ (W)w); 3599 clear_pending (EV_A_ (W)w);
2220 if (expect_false (!ev_is_active (w))) 3600 if (expect_false (!ev_is_active (w)))
2221 return; 3601 return;
2222 3602
3603 EV_FREQUENT_CHECK;
3604
2223 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3605 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2224 ev_stop (EV_A_ (W)w); 3606 ev_stop (EV_A_ (W)w);
3607
3608 EV_FREQUENT_CHECK;
2225} 3609}
3610
3611#endif
2226 3612
2227#if EV_STAT_ENABLE 3613#if EV_STAT_ENABLE
2228 3614
2229# ifdef _WIN32 3615# ifdef _WIN32
2230# undef lstat 3616# undef lstat
2231# define lstat(a,b) _stati64 (a,b) 3617# define lstat(a,b) _stati64 (a,b)
2232# endif 3618# endif
2233 3619
2234#define DEF_STAT_INTERVAL 5.0074891 3620#define DEF_STAT_INTERVAL 5.0074891
3621#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2235#define MIN_STAT_INTERVAL 0.1074891 3622#define MIN_STAT_INTERVAL 0.1074891
2236 3623
2237static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3624static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2238 3625
2239#if EV_USE_INOTIFY 3626#if EV_USE_INOTIFY
2240# define EV_INOTIFY_BUFSIZE 8192 3627
3628/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3629# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2241 3630
2242static void noinline 3631static void noinline
2243infy_add (EV_P_ ev_stat *w) 3632infy_add (EV_P_ ev_stat *w)
2244{ 3633{
2245 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); 3634 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);
2246 3635
2247 if (w->wd < 0) 3636 if (w->wd >= 0)
3637 {
3638 struct statfs sfs;
3639
3640 /* now local changes will be tracked by inotify, but remote changes won't */
3641 /* unless the filesystem is known to be local, we therefore still poll */
3642 /* also do poll on <2.6.25, but with normal frequency */
3643
3644 if (!fs_2625)
3645 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3646 else if (!statfs (w->path, &sfs)
3647 && (sfs.f_type == 0x1373 /* devfs */
3648 || sfs.f_type == 0xEF53 /* ext2/3 */
3649 || sfs.f_type == 0x3153464a /* jfs */
3650 || sfs.f_type == 0x52654973 /* reiser3 */
3651 || sfs.f_type == 0x01021994 /* tempfs */
3652 || sfs.f_type == 0x58465342 /* xfs */))
3653 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3654 else
3655 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2248 { 3656 }
2249 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3657 else
3658 {
3659 /* can't use inotify, continue to stat */
3660 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2250 3661
2251 /* monitor some parent directory for speedup hints */ 3662 /* if path is not there, monitor some parent directory for speedup hints */
2252 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3663 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2253 /* but an efficiency issue only */ 3664 /* but an efficiency issue only */
2254 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3665 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2255 { 3666 {
2256 char path [4096]; 3667 char path [4096];
2257 strcpy (path, w->path); 3668 strcpy (path, w->path);
… …
2261 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3672 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2262 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3673 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2263 3674
2264 char *pend = strrchr (path, '/'); 3675 char *pend = strrchr (path, '/');
2265 3676
2266 if (!pend) 3677 if (!pend || pend == path)
2267 break; /* whoops, no '/', complain to your admin */ 3678 break;
2268 3679
2269 *pend = 0; 3680 *pend = 0;
2270 w->wd = inotify_add_watch (fs_fd, path, mask); 3681 w->wd = inotify_add_watch (fs_fd, path, mask);
2271 } 3682 }
2272 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3683 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2273 } 3684 }
2274 } 3685 }
2275 else
2276 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2277 3686
2278 if (w->wd >= 0) 3687 if (w->wd >= 0)
2279 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3688 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3689
3690 /* now re-arm timer, if required */
3691 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3692 ev_timer_again (EV_A_ &w->timer);
3693 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2280} 3694}
2281 3695
2282static void noinline 3696static void noinline
2283infy_del (EV_P_ ev_stat *w) 3697infy_del (EV_P_ ev_stat *w)
2284{ 3698{
… …
2287 3701
2288 if (wd < 0) 3702 if (wd < 0)
2289 return; 3703 return;
2290 3704
2291 w->wd = -2; 3705 w->wd = -2;
2292 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3706 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2293 wlist_del (&fs_hash [slot].head, (WL)w); 3707 wlist_del (&fs_hash [slot].head, (WL)w);
2294 3708
2295 /* remove this watcher, if others are watching it, they will rearm */ 3709 /* remove this watcher, if others are watching it, they will rearm */
2296 inotify_rm_watch (fs_fd, wd); 3710 inotify_rm_watch (fs_fd, wd);
2297} 3711}
2298 3712
2299static void noinline 3713static void noinline
2300infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3714infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2301{ 3715{
2302 if (slot < 0) 3716 if (slot < 0)
2303 /* overflow, need to check for all hahs slots */ 3717 /* overflow, need to check for all hash slots */
2304 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3718 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2305 infy_wd (EV_A_ slot, wd, ev); 3719 infy_wd (EV_A_ slot, wd, ev);
2306 else 3720 else
2307 { 3721 {
2308 WL w_; 3722 WL w_;
2309 3723
2310 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3724 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2311 { 3725 {
2312 ev_stat *w = (ev_stat *)w_; 3726 ev_stat *w = (ev_stat *)w_;
2313 w_ = w_->next; /* lets us remove this watcher and all before it */ 3727 w_ = w_->next; /* lets us remove this watcher and all before it */
2314 3728
2315 if (w->wd == wd || wd == -1) 3729 if (w->wd == wd || wd == -1)
2316 { 3730 {
2317 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3731 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2318 { 3732 {
3733 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2319 w->wd = -1; 3734 w->wd = -1;
2320 infy_add (EV_A_ w); /* re-add, no matter what */ 3735 infy_add (EV_A_ w); /* re-add, no matter what */
2321 } 3736 }
2322 3737
2323 stat_timer_cb (EV_A_ &w->timer, 0); 3738 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2328 3743
2329static void 3744static void
2330infy_cb (EV_P_ ev_io *w, int revents) 3745infy_cb (EV_P_ ev_io *w, int revents)
2331{ 3746{
2332 char buf [EV_INOTIFY_BUFSIZE]; 3747 char buf [EV_INOTIFY_BUFSIZE];
2333 struct inotify_event *ev = (struct inotify_event *)buf;
2334 int ofs; 3748 int ofs;
2335 int len = read (fs_fd, buf, sizeof (buf)); 3749 int len = read (fs_fd, buf, sizeof (buf));
2336 3750
2337 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3751 for (ofs = 0; ofs < len; )
3752 {
3753 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2338 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3754 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3755 ofs += sizeof (struct inotify_event) + ev->len;
3756 }
2339} 3757}
2340 3758
2341void inline_size 3759inline_size void ecb_cold
3760ev_check_2625 (EV_P)
3761{
3762 /* kernels < 2.6.25 are borked
3763 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3764 */
3765 if (ev_linux_version () < 0x020619)
3766 return;
3767
3768 fs_2625 = 1;
3769}
3770
3771inline_size int
3772infy_newfd (void)
3773{
3774#if defined IN_CLOEXEC && defined IN_NONBLOCK
3775 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3776 if (fd >= 0)
3777 return fd;
3778#endif
3779 return inotify_init ();
3780}
3781
3782inline_size void
2342infy_init (EV_P) 3783infy_init (EV_P)
2343{ 3784{
2344 if (fs_fd != -2) 3785 if (fs_fd != -2)
2345 return; 3786 return;
2346 3787
3788 fs_fd = -1;
3789
3790 ev_check_2625 (EV_A);
3791
2347 fs_fd = inotify_init (); 3792 fs_fd = infy_newfd ();
2348 3793
2349 if (fs_fd >= 0) 3794 if (fs_fd >= 0)
2350 { 3795 {
3796 fd_intern (fs_fd);
2351 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3797 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2352 ev_set_priority (&fs_w, EV_MAXPRI); 3798 ev_set_priority (&fs_w, EV_MAXPRI);
2353 ev_io_start (EV_A_ &fs_w); 3799 ev_io_start (EV_A_ &fs_w);
3800 ev_unref (EV_A);
2354 } 3801 }
2355} 3802}
2356 3803
2357void inline_size 3804inline_size void
2358infy_fork (EV_P) 3805infy_fork (EV_P)
2359{ 3806{
2360 int slot; 3807 int slot;
2361 3808
2362 if (fs_fd < 0) 3809 if (fs_fd < 0)
2363 return; 3810 return;
2364 3811
3812 ev_ref (EV_A);
3813 ev_io_stop (EV_A_ &fs_w);
2365 close (fs_fd); 3814 close (fs_fd);
2366 fs_fd = inotify_init (); 3815 fs_fd = infy_newfd ();
2367 3816
3817 if (fs_fd >= 0)
3818 {
3819 fd_intern (fs_fd);
3820 ev_io_set (&fs_w, fs_fd, EV_READ);
3821 ev_io_start (EV_A_ &fs_w);
3822 ev_unref (EV_A);
3823 }
3824
2368 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3825 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2369 { 3826 {
2370 WL w_ = fs_hash [slot].head; 3827 WL w_ = fs_hash [slot].head;
2371 fs_hash [slot].head = 0; 3828 fs_hash [slot].head = 0;
2372 3829
2373 while (w_) 3830 while (w_)
… …
2378 w->wd = -1; 3835 w->wd = -1;
2379 3836
2380 if (fs_fd >= 0) 3837 if (fs_fd >= 0)
2381 infy_add (EV_A_ w); /* re-add, no matter what */ 3838 infy_add (EV_A_ w); /* re-add, no matter what */
2382 else 3839 else
3840 {
3841 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3842 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2383 ev_timer_start (EV_A_ &w->timer); 3843 ev_timer_again (EV_A_ &w->timer);
3844 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3845 }
2384 } 3846 }
2385
2386 } 3847 }
2387} 3848}
2388 3849
3850#endif
3851
3852#ifdef _WIN32
3853# define EV_LSTAT(p,b) _stati64 (p, b)
3854#else
3855# define EV_LSTAT(p,b) lstat (p, b)
2389#endif 3856#endif
2390 3857
2391void 3858void
2392ev_stat_stat (EV_P_ ev_stat *w) 3859ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2393{ 3860{
2394 if (lstat (w->path, &w->attr) < 0) 3861 if (lstat (w->path, &w->attr) < 0)
2395 w->attr.st_nlink = 0; 3862 w->attr.st_nlink = 0;
2396 else if (!w->attr.st_nlink) 3863 else if (!w->attr.st_nlink)
2397 w->attr.st_nlink = 1; 3864 w->attr.st_nlink = 1;
… …
2400static void noinline 3867static void noinline
2401stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3868stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2402{ 3869{
2403 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3870 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2404 3871
2405 /* we copy this here each the time so that */ 3872 ev_statdata prev = w->attr;
2406 /* prev has the old value when the callback gets invoked */
2407 w->prev = w->attr;
2408 ev_stat_stat (EV_A_ w); 3873 ev_stat_stat (EV_A_ w);
2409 3874
2410 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3875 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2411 if ( 3876 if (
2412 w->prev.st_dev != w->attr.st_dev 3877 prev.st_dev != w->attr.st_dev
2413 || w->prev.st_ino != w->attr.st_ino 3878 || prev.st_ino != w->attr.st_ino
2414 || w->prev.st_mode != w->attr.st_mode 3879 || prev.st_mode != w->attr.st_mode
2415 || w->prev.st_nlink != w->attr.st_nlink 3880 || prev.st_nlink != w->attr.st_nlink
2416 || w->prev.st_uid != w->attr.st_uid 3881 || prev.st_uid != w->attr.st_uid
2417 || w->prev.st_gid != w->attr.st_gid 3882 || prev.st_gid != w->attr.st_gid
2418 || w->prev.st_rdev != w->attr.st_rdev 3883 || prev.st_rdev != w->attr.st_rdev
2419 || w->prev.st_size != w->attr.st_size 3884 || prev.st_size != w->attr.st_size
2420 || w->prev.st_atime != w->attr.st_atime 3885 || prev.st_atime != w->attr.st_atime
2421 || w->prev.st_mtime != w->attr.st_mtime 3886 || prev.st_mtime != w->attr.st_mtime
2422 || w->prev.st_ctime != w->attr.st_ctime 3887 || prev.st_ctime != w->attr.st_ctime
2423 ) { 3888 ) {
3889 /* we only update w->prev on actual differences */
3890 /* in case we test more often than invoke the callback, */
3891 /* to ensure that prev is always different to attr */
3892 w->prev = prev;
3893
2424 #if EV_USE_INOTIFY 3894 #if EV_USE_INOTIFY
3895 if (fs_fd >= 0)
3896 {
2425 infy_del (EV_A_ w); 3897 infy_del (EV_A_ w);
2426 infy_add (EV_A_ w); 3898 infy_add (EV_A_ w);
2427 ev_stat_stat (EV_A_ w); /* avoid race... */ 3899 ev_stat_stat (EV_A_ w); /* avoid race... */
3900 }
2428 #endif 3901 #endif
2429 3902
2430 ev_feed_event (EV_A_ w, EV_STAT); 3903 ev_feed_event (EV_A_ w, EV_STAT);
2431 } 3904 }
2432} 3905}
2433 3906
2434void 3907void
2435ev_stat_start (EV_P_ ev_stat *w) 3908ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2436{ 3909{
2437 if (expect_false (ev_is_active (w))) 3910 if (expect_false (ev_is_active (w)))
2438 return; 3911 return;
2439 3912
2440 /* since we use memcmp, we need to clear any padding data etc. */
2441 memset (&w->prev, 0, sizeof (ev_statdata));
2442 memset (&w->attr, 0, sizeof (ev_statdata));
2443
2444 ev_stat_stat (EV_A_ w); 3913 ev_stat_stat (EV_A_ w);
2445 3914
3915 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2446 if (w->interval < MIN_STAT_INTERVAL) 3916 w->interval = MIN_STAT_INTERVAL;
2447 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2448 3917
2449 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3918 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2450 ev_set_priority (&w->timer, ev_priority (w)); 3919 ev_set_priority (&w->timer, ev_priority (w));
2451 3920
2452#if EV_USE_INOTIFY 3921#if EV_USE_INOTIFY
2453 infy_init (EV_A); 3922 infy_init (EV_A);
2454 3923
2455 if (fs_fd >= 0) 3924 if (fs_fd >= 0)
2456 infy_add (EV_A_ w); 3925 infy_add (EV_A_ w);
2457 else 3926 else
2458#endif 3927#endif
3928 {
2459 ev_timer_start (EV_A_ &w->timer); 3929 ev_timer_again (EV_A_ &w->timer);
3930 ev_unref (EV_A);
3931 }
2460 3932
2461 ev_start (EV_A_ (W)w, 1); 3933 ev_start (EV_A_ (W)w, 1);
3934
3935 EV_FREQUENT_CHECK;
2462} 3936}
2463 3937
2464void 3938void
2465ev_stat_stop (EV_P_ ev_stat *w) 3939ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2466{ 3940{
2467 clear_pending (EV_A_ (W)w); 3941 clear_pending (EV_A_ (W)w);
2468 if (expect_false (!ev_is_active (w))) 3942 if (expect_false (!ev_is_active (w)))
2469 return; 3943 return;
2470 3944
3945 EV_FREQUENT_CHECK;
3946
2471#if EV_USE_INOTIFY 3947#if EV_USE_INOTIFY
2472 infy_del (EV_A_ w); 3948 infy_del (EV_A_ w);
2473#endif 3949#endif
3950
3951 if (ev_is_active (&w->timer))
3952 {
3953 ev_ref (EV_A);
2474 ev_timer_stop (EV_A_ &w->timer); 3954 ev_timer_stop (EV_A_ &w->timer);
3955 }
2475 3956
2476 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
3958
3959 EV_FREQUENT_CHECK;
2477} 3960}
2478#endif 3961#endif
2479 3962
2480#if EV_IDLE_ENABLE 3963#if EV_IDLE_ENABLE
2481void 3964void
2482ev_idle_start (EV_P_ ev_idle *w) 3965ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2483{ 3966{
2484 if (expect_false (ev_is_active (w))) 3967 if (expect_false (ev_is_active (w)))
2485 return; 3968 return;
2486 3969
2487 pri_adjust (EV_A_ (W)w); 3970 pri_adjust (EV_A_ (W)w);
3971
3972 EV_FREQUENT_CHECK;
2488 3973
2489 { 3974 {
2490 int active = ++idlecnt [ABSPRI (w)]; 3975 int active = ++idlecnt [ABSPRI (w)];
2491 3976
2492 ++idleall; 3977 ++idleall;
2493 ev_start (EV_A_ (W)w, active); 3978 ev_start (EV_A_ (W)w, active);
2494 3979
2495 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3980 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2496 idles [ABSPRI (w)][active - 1] = w; 3981 idles [ABSPRI (w)][active - 1] = w;
2497 } 3982 }
3983
3984 EV_FREQUENT_CHECK;
2498} 3985}
2499 3986
2500void 3987void
2501ev_idle_stop (EV_P_ ev_idle *w) 3988ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2502{ 3989{
2503 clear_pending (EV_A_ (W)w); 3990 clear_pending (EV_A_ (W)w);
2504 if (expect_false (!ev_is_active (w))) 3991 if (expect_false (!ev_is_active (w)))
2505 return; 3992 return;
2506 3993
3994 EV_FREQUENT_CHECK;
3995
2507 { 3996 {
2508 int active = ev_active (w); 3997 int active = ev_active (w);
2509 3998
2510 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3999 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2511 ev_active (idles [ABSPRI (w)][active - 1]) = active; 4000 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2512 4001
2513 ev_stop (EV_A_ (W)w); 4002 ev_stop (EV_A_ (W)w);
2514 --idleall; 4003 --idleall;
2515 } 4004 }
2516}
2517#endif
2518 4005
4006 EV_FREQUENT_CHECK;
4007}
4008#endif
4009
4010#if EV_PREPARE_ENABLE
2519void 4011void
2520ev_prepare_start (EV_P_ ev_prepare *w) 4012ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2521{ 4013{
2522 if (expect_false (ev_is_active (w))) 4014 if (expect_false (ev_is_active (w)))
2523 return; 4015 return;
4016
4017 EV_FREQUENT_CHECK;
2524 4018
2525 ev_start (EV_A_ (W)w, ++preparecnt); 4019 ev_start (EV_A_ (W)w, ++preparecnt);
2526 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4020 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2527 prepares [preparecnt - 1] = w; 4021 prepares [preparecnt - 1] = w;
4022
4023 EV_FREQUENT_CHECK;
2528} 4024}
2529 4025
2530void 4026void
2531ev_prepare_stop (EV_P_ ev_prepare *w) 4027ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2532{ 4028{
2533 clear_pending (EV_A_ (W)w); 4029 clear_pending (EV_A_ (W)w);
2534 if (expect_false (!ev_is_active (w))) 4030 if (expect_false (!ev_is_active (w)))
2535 return; 4031 return;
2536 4032
4033 EV_FREQUENT_CHECK;
4034
2537 { 4035 {
2538 int active = ev_active (w); 4036 int active = ev_active (w);
2539 4037
2540 prepares [active - 1] = prepares [--preparecnt]; 4038 prepares [active - 1] = prepares [--preparecnt];
2541 ev_active (prepares [active - 1]) = active; 4039 ev_active (prepares [active - 1]) = active;
2542 } 4040 }
2543 4041
2544 ev_stop (EV_A_ (W)w); 4042 ev_stop (EV_A_ (W)w);
2545}
2546 4043
4044 EV_FREQUENT_CHECK;
4045}
4046#endif
4047
4048#if EV_CHECK_ENABLE
2547void 4049void
2548ev_check_start (EV_P_ ev_check *w) 4050ev_check_start (EV_P_ ev_check *w) EV_THROW
2549{ 4051{
2550 if (expect_false (ev_is_active (w))) 4052 if (expect_false (ev_is_active (w)))
2551 return; 4053 return;
4054
4055 EV_FREQUENT_CHECK;
2552 4056
2553 ev_start (EV_A_ (W)w, ++checkcnt); 4057 ev_start (EV_A_ (W)w, ++checkcnt);
2554 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4058 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2555 checks [checkcnt - 1] = w; 4059 checks [checkcnt - 1] = w;
4060
4061 EV_FREQUENT_CHECK;
2556} 4062}
2557 4063
2558void 4064void
2559ev_check_stop (EV_P_ ev_check *w) 4065ev_check_stop (EV_P_ ev_check *w) EV_THROW
2560{ 4066{
2561 clear_pending (EV_A_ (W)w); 4067 clear_pending (EV_A_ (W)w);
2562 if (expect_false (!ev_is_active (w))) 4068 if (expect_false (!ev_is_active (w)))
2563 return; 4069 return;
2564 4070
4071 EV_FREQUENT_CHECK;
4072
2565 { 4073 {
2566 int active = ev_active (w); 4074 int active = ev_active (w);
2567 4075
2568 checks [active - 1] = checks [--checkcnt]; 4076 checks [active - 1] = checks [--checkcnt];
2569 ev_active (checks [active - 1]) = active; 4077 ev_active (checks [active - 1]) = active;
2570 } 4078 }
2571 4079
2572 ev_stop (EV_A_ (W)w); 4080 ev_stop (EV_A_ (W)w);
4081
4082 EV_FREQUENT_CHECK;
2573} 4083}
4084#endif
2574 4085
2575#if EV_EMBED_ENABLE 4086#if EV_EMBED_ENABLE
2576void noinline 4087void noinline
2577ev_embed_sweep (EV_P_ ev_embed *w) 4088ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2578{ 4089{
2579 ev_loop (w->other, EVLOOP_NONBLOCK); 4090 ev_run (w->other, EVRUN_NOWAIT);
2580} 4091}
2581 4092
2582static void 4093static void
2583embed_io_cb (EV_P_ ev_io *io, int revents) 4094embed_io_cb (EV_P_ ev_io *io, int revents)
2584{ 4095{
2585 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4096 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2586 4097
2587 if (ev_cb (w)) 4098 if (ev_cb (w))
2588 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4099 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2589 else 4100 else
2590 ev_loop (w->other, EVLOOP_NONBLOCK); 4101 ev_run (w->other, EVRUN_NOWAIT);
2591} 4102}
2592 4103
2593static void 4104static void
2594embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4105embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2595{ 4106{
2596 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4107 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2597 4108
2598 { 4109 {
2599 struct ev_loop *loop = w->other; 4110 EV_P = w->other;
2600 4111
2601 while (fdchangecnt) 4112 while (fdchangecnt)
2602 { 4113 {
2603 fd_reify (EV_A); 4114 fd_reify (EV_A);
2604 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4115 ev_run (EV_A_ EVRUN_NOWAIT);
2605 } 4116 }
2606 } 4117 }
4118}
4119
4120static void
4121embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4122{
4123 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4124
4125 ev_embed_stop (EV_A_ w);
4126
4127 {
4128 EV_P = w->other;
4129
4130 ev_loop_fork (EV_A);
4131 ev_run (EV_A_ EVRUN_NOWAIT);
4132 }
4133
4134 ev_embed_start (EV_A_ w);
2607} 4135}
2608 4136
2609#if 0 4137#if 0
2610static void 4138static void
2611embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4139embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2613 ev_idle_stop (EV_A_ idle); 4141 ev_idle_stop (EV_A_ idle);
2614} 4142}
2615#endif 4143#endif
2616 4144
2617void 4145void
2618ev_embed_start (EV_P_ ev_embed *w) 4146ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2619{ 4147{
2620 if (expect_false (ev_is_active (w))) 4148 if (expect_false (ev_is_active (w)))
2621 return; 4149 return;
2622 4150
2623 { 4151 {
2624 struct ev_loop *loop = w->other; 4152 EV_P = w->other;
2625 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4153 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2626 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4154 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2627 } 4155 }
4156
4157 EV_FREQUENT_CHECK;
2628 4158
2629 ev_set_priority (&w->io, ev_priority (w)); 4159 ev_set_priority (&w->io, ev_priority (w));
2630 ev_io_start (EV_A_ &w->io); 4160 ev_io_start (EV_A_ &w->io);
2631 4161
2632 ev_prepare_init (&w->prepare, embed_prepare_cb); 4162 ev_prepare_init (&w->prepare, embed_prepare_cb);
2633 ev_set_priority (&w->prepare, EV_MINPRI); 4163 ev_set_priority (&w->prepare, EV_MINPRI);
2634 ev_prepare_start (EV_A_ &w->prepare); 4164 ev_prepare_start (EV_A_ &w->prepare);
2635 4165
4166 ev_fork_init (&w->fork, embed_fork_cb);
4167 ev_fork_start (EV_A_ &w->fork);
4168
2636 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 4169 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2637 4170
2638 ev_start (EV_A_ (W)w, 1); 4171 ev_start (EV_A_ (W)w, 1);
4172
4173 EV_FREQUENT_CHECK;
2639} 4174}
2640 4175
2641void 4176void
2642ev_embed_stop (EV_P_ ev_embed *w) 4177ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2643{ 4178{
2644 clear_pending (EV_A_ (W)w); 4179 clear_pending (EV_A_ (W)w);
2645 if (expect_false (!ev_is_active (w))) 4180 if (expect_false (!ev_is_active (w)))
2646 return; 4181 return;
2647 4182
4183 EV_FREQUENT_CHECK;
4184
2648 ev_io_stop (EV_A_ &w->io); 4185 ev_io_stop (EV_A_ &w->io);
2649 ev_prepare_stop (EV_A_ &w->prepare); 4186 ev_prepare_stop (EV_A_ &w->prepare);
4187 ev_fork_stop (EV_A_ &w->fork);
2650 4188
2651 ev_stop (EV_A_ (W)w); 4189 ev_stop (EV_A_ (W)w);
4190
4191 EV_FREQUENT_CHECK;
2652} 4192}
2653#endif 4193#endif
2654 4194
2655#if EV_FORK_ENABLE 4195#if EV_FORK_ENABLE
2656void 4196void
2657ev_fork_start (EV_P_ ev_fork *w) 4197ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2658{ 4198{
2659 if (expect_false (ev_is_active (w))) 4199 if (expect_false (ev_is_active (w)))
2660 return; 4200 return;
4201
4202 EV_FREQUENT_CHECK;
2661 4203
2662 ev_start (EV_A_ (W)w, ++forkcnt); 4204 ev_start (EV_A_ (W)w, ++forkcnt);
2663 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4205 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2664 forks [forkcnt - 1] = w; 4206 forks [forkcnt - 1] = w;
4207
4208 EV_FREQUENT_CHECK;
2665} 4209}
2666 4210
2667void 4211void
2668ev_fork_stop (EV_P_ ev_fork *w) 4212ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
2669{ 4213{
2670 clear_pending (EV_A_ (W)w); 4214 clear_pending (EV_A_ (W)w);
2671 if (expect_false (!ev_is_active (w))) 4215 if (expect_false (!ev_is_active (w)))
2672 return; 4216 return;
2673 4217
4218 EV_FREQUENT_CHECK;
4219
2674 { 4220 {
2675 int active = ev_active (w); 4221 int active = ev_active (w);
2676 4222
2677 forks [active - 1] = forks [--forkcnt]; 4223 forks [active - 1] = forks [--forkcnt];
2678 ev_active (forks [active - 1]) = active; 4224 ev_active (forks [active - 1]) = active;
2679 } 4225 }
2680 4226
2681 ev_stop (EV_A_ (W)w); 4227 ev_stop (EV_A_ (W)w);
4228
4229 EV_FREQUENT_CHECK;
4230}
4231#endif
4232
4233#if EV_CLEANUP_ENABLE
4234void
4235ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4236{
4237 if (expect_false (ev_is_active (w)))
4238 return;
4239
4240 EV_FREQUENT_CHECK;
4241
4242 ev_start (EV_A_ (W)w, ++cleanupcnt);
4243 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4244 cleanups [cleanupcnt - 1] = w;
4245
4246 /* cleanup watchers should never keep a refcount on the loop */
4247 ev_unref (EV_A);
4248 EV_FREQUENT_CHECK;
4249}
4250
4251void
4252ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4253{
4254 clear_pending (EV_A_ (W)w);
4255 if (expect_false (!ev_is_active (w)))
4256 return;
4257
4258 EV_FREQUENT_CHECK;
4259 ev_ref (EV_A);
4260
4261 {
4262 int active = ev_active (w);
4263
4264 cleanups [active - 1] = cleanups [--cleanupcnt];
4265 ev_active (cleanups [active - 1]) = active;
4266 }
4267
4268 ev_stop (EV_A_ (W)w);
4269
4270 EV_FREQUENT_CHECK;
2682} 4271}
2683#endif 4272#endif
2684 4273
2685#if EV_ASYNC_ENABLE 4274#if EV_ASYNC_ENABLE
2686void 4275void
2687ev_async_start (EV_P_ ev_async *w) 4276ev_async_start (EV_P_ ev_async *w) EV_THROW
2688{ 4277{
2689 if (expect_false (ev_is_active (w))) 4278 if (expect_false (ev_is_active (w)))
2690 return; 4279 return;
2691 4280
4281 w->sent = 0;
4282
2692 evpipe_init (EV_A); 4283 evpipe_init (EV_A);
4284
4285 EV_FREQUENT_CHECK;
2693 4286
2694 ev_start (EV_A_ (W)w, ++asynccnt); 4287 ev_start (EV_A_ (W)w, ++asynccnt);
2695 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4288 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2696 asyncs [asynccnt - 1] = w; 4289 asyncs [asynccnt - 1] = w;
4290
4291 EV_FREQUENT_CHECK;
2697} 4292}
2698 4293
2699void 4294void
2700ev_async_stop (EV_P_ ev_async *w) 4295ev_async_stop (EV_P_ ev_async *w) EV_THROW
2701{ 4296{
2702 clear_pending (EV_A_ (W)w); 4297 clear_pending (EV_A_ (W)w);
2703 if (expect_false (!ev_is_active (w))) 4298 if (expect_false (!ev_is_active (w)))
2704 return; 4299 return;
2705 4300
4301 EV_FREQUENT_CHECK;
4302
2706 { 4303 {
2707 int active = ev_active (w); 4304 int active = ev_active (w);
2708 4305
2709 asyncs [active - 1] = asyncs [--asynccnt]; 4306 asyncs [active - 1] = asyncs [--asynccnt];
2710 ev_active (asyncs [active - 1]) = active; 4307 ev_active (asyncs [active - 1]) = active;
2711 } 4308 }
2712 4309
2713 ev_stop (EV_A_ (W)w); 4310 ev_stop (EV_A_ (W)w);
4311
4312 EV_FREQUENT_CHECK;
2714} 4313}
2715 4314
2716void 4315void
2717ev_async_send (EV_P_ ev_async *w) 4316ev_async_send (EV_P_ ev_async *w) EV_THROW
2718{ 4317{
2719 w->sent = 1; 4318 w->sent = 1;
2720 evpipe_write (EV_A_ &gotasync); 4319 evpipe_write (EV_A_ &async_pending);
2721} 4320}
2722#endif 4321#endif
2723 4322
2724/*****************************************************************************/ 4323/*****************************************************************************/
2725 4324
… …
2735once_cb (EV_P_ struct ev_once *once, int revents) 4334once_cb (EV_P_ struct ev_once *once, int revents)
2736{ 4335{
2737 void (*cb)(int revents, void *arg) = once->cb; 4336 void (*cb)(int revents, void *arg) = once->cb;
2738 void *arg = once->arg; 4337 void *arg = once->arg;
2739 4338
2740 ev_io_stop (EV_A_ &once->io); 4339 ev_io_stop (EV_A_ &once->io);
2741 ev_timer_stop (EV_A_ &once->to); 4340 ev_timer_stop (EV_A_ &once->to);
2742 ev_free (once); 4341 ev_free (once);
2743 4342
2744 cb (revents, arg); 4343 cb (revents, arg);
2745} 4344}
2746 4345
2747static void 4346static void
2748once_cb_io (EV_P_ ev_io *w, int revents) 4347once_cb_io (EV_P_ ev_io *w, int revents)
2749{ 4348{
2750 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 4349 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
4350
4351 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2751} 4352}
2752 4353
2753static void 4354static void
2754once_cb_to (EV_P_ ev_timer *w, int revents) 4355once_cb_to (EV_P_ ev_timer *w, int revents)
2755{ 4356{
2756 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 4357 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
4358
4359 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2757} 4360}
2758 4361
2759void 4362void
2760ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4363ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
2761{ 4364{
2762 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4365 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2763 4366
2764 if (expect_false (!once)) 4367 if (expect_false (!once))
2765 { 4368 {
2766 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4369 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2767 return; 4370 return;
2768 } 4371 }
2769 4372
2770 once->cb = cb; 4373 once->cb = cb;
2771 once->arg = arg; 4374 once->arg = arg;
… …
2783 ev_timer_set (&once->to, timeout, 0.); 4386 ev_timer_set (&once->to, timeout, 0.);
2784 ev_timer_start (EV_A_ &once->to); 4387 ev_timer_start (EV_A_ &once->to);
2785 } 4388 }
2786} 4389}
2787 4390
4391/*****************************************************************************/
4392
4393#if EV_WALK_ENABLE
4394void ecb_cold
4395ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4396{
4397 int i, j;
4398 ev_watcher_list *wl, *wn;
4399
4400 if (types & (EV_IO | EV_EMBED))
4401 for (i = 0; i < anfdmax; ++i)
4402 for (wl = anfds [i].head; wl; )
4403 {
4404 wn = wl->next;
4405
4406#if EV_EMBED_ENABLE
4407 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4408 {
4409 if (types & EV_EMBED)
4410 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4411 }
4412 else
4413#endif
4414#if EV_USE_INOTIFY
4415 if (ev_cb ((ev_io *)wl) == infy_cb)
4416 ;
4417 else
4418#endif
4419 if ((ev_io *)wl != &pipe_w)
4420 if (types & EV_IO)
4421 cb (EV_A_ EV_IO, wl);
4422
4423 wl = wn;
4424 }
4425
4426 if (types & (EV_TIMER | EV_STAT))
4427 for (i = timercnt + HEAP0; i-- > HEAP0; )
4428#if EV_STAT_ENABLE
4429 /*TODO: timer is not always active*/
4430 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4431 {
4432 if (types & EV_STAT)
4433 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4434 }
4435 else
4436#endif
4437 if (types & EV_TIMER)
4438 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4439
4440#if EV_PERIODIC_ENABLE
4441 if (types & EV_PERIODIC)
4442 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4443 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4444#endif
4445
4446#if EV_IDLE_ENABLE
4447 if (types & EV_IDLE)
4448 for (j = NUMPRI; j--; )
4449 for (i = idlecnt [j]; i--; )
4450 cb (EV_A_ EV_IDLE, idles [j][i]);
4451#endif
4452
4453#if EV_FORK_ENABLE
4454 if (types & EV_FORK)
4455 for (i = forkcnt; i--; )
4456 if (ev_cb (forks [i]) != embed_fork_cb)
4457 cb (EV_A_ EV_FORK, forks [i]);
4458#endif
4459
4460#if EV_ASYNC_ENABLE
4461 if (types & EV_ASYNC)
4462 for (i = asynccnt; i--; )
4463 cb (EV_A_ EV_ASYNC, asyncs [i]);
4464#endif
4465
4466#if EV_PREPARE_ENABLE
4467 if (types & EV_PREPARE)
4468 for (i = preparecnt; i--; )
4469# if EV_EMBED_ENABLE
4470 if (ev_cb (prepares [i]) != embed_prepare_cb)
4471# endif
4472 cb (EV_A_ EV_PREPARE, prepares [i]);
4473#endif
4474
4475#if EV_CHECK_ENABLE
4476 if (types & EV_CHECK)
4477 for (i = checkcnt; i--; )
4478 cb (EV_A_ EV_CHECK, checks [i]);
4479#endif
4480
4481#if EV_SIGNAL_ENABLE
4482 if (types & EV_SIGNAL)
4483 for (i = 0; i < EV_NSIG - 1; ++i)
4484 for (wl = signals [i].head; wl; )
4485 {
4486 wn = wl->next;
4487 cb (EV_A_ EV_SIGNAL, wl);
4488 wl = wn;
4489 }
4490#endif
4491
4492#if EV_CHILD_ENABLE
4493 if (types & EV_CHILD)
4494 for (i = (EV_PID_HASHSIZE); i--; )
4495 for (wl = childs [i]; wl; )
4496 {
4497 wn = wl->next;
4498 cb (EV_A_ EV_CHILD, wl);
4499 wl = wn;
4500 }
4501#endif
4502/* EV_STAT 0x00001000 /* stat data changed */
4503/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4504}
4505#endif
4506
2788#if EV_MULTIPLICITY 4507#if EV_MULTIPLICITY
2789 #include "ev_wrap.h" 4508 #include "ev_wrap.h"
2790#endif 4509#endif
2791 4510
2792#ifdef __cplusplus
2793}
2794#endif
2795

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