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Comparing libev/ev.c (file contents):
Revision 1.230 by root, Fri May 2 08:13:16 2008 UTC vs.
Revision 1.413 by root, Fri Mar 23 19:06:08 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 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
353#ifndef EV_USE_4HEAP
354# define EV_USE_4HEAP EV_FEATURE_DATA
355#endif
356
357#ifndef EV_HEAP_CACHE_AT
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 <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
373#endif
374
240/* 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
241 382
242#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
245#endif 386#endif
… …
253# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
254# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
255#endif 396#endif
256 397
257#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
258# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux)
259# include <sys/select.h> 401# include <sys/select.h>
260# endif 402# endif
261#endif 403#endif
262 404
263#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
406# include <sys/statfs.h>
264# 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
265#endif 413#endif
266 414
267#if EV_SELECT_IS_WINSOCKET 415#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 416# include <winsock.h>
269#endif 417#endif
270 418
271#if EV_USE_EVENTFD 419#if EV_USE_EVENTFD
272/* 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 */
273# include <stdint.h> 421# include <stdint.h>
274# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
275extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
276# endif 424# endif
277int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
278# ifdef __cplusplus 426# ifdef O_CLOEXEC
279} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
280# 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};
281#endif 455#endif
282 456
283/**/ 457/**/
284 458
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
285/* 465/*
286 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding
289 * errors are against us.
290 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
291 * Better solutions welcome.
292 */ 468 */
293#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 */
294 471
295#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) */
296#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) */
297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
298 474
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;
299#if __GNUC__ >= 4 519 #if __GNUC__
300# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
301# 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
302#else 526#else
303# define expect(expr,value) (expr) 527 #include <inttypes.h>
304# define noinline
305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline
307# 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)))
308#endif 542 #endif
543#endif
309 544
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 #endif
585 #endif
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
590 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined(_WIN32)
599 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
606 #elif __xlC__
607 #define ECB_MEMORY_FENCE __lwsync ()
608 #endif
609#endif
610
611#ifndef ECB_MEMORY_FENCE
612 #if !ECB_AVOID_PTHREADS
613 /*
614 * if you get undefined symbol references to pthread_mutex_lock,
615 * or failure to find pthread.h, then you should implement
616 * the ECB_MEMORY_FENCE operations for your cpu/compiler
617 * OR provide pthread.h and link against the posix thread library
618 * of your system.
619 */
620 #include <pthread.h>
621 #define ECB_NEEDS_PTHREADS 1
622 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
623
624 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
625 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
626 #endif
627#endif
628
629#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
630 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
631#endif
632
633#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
634 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
635#endif
636
637/*****************************************************************************/
638
639#define ECB_C99 (__STDC_VERSION__ >= 199901L)
640
641#if __cplusplus
642 #define ecb_inline static inline
643#elif ECB_GCC_VERSION(2,5)
644 #define ecb_inline static __inline__
645#elif ECB_C99
646 #define ecb_inline static inline
647#else
648 #define ecb_inline static
649#endif
650
651#if ECB_GCC_VERSION(3,3)
652 #define ecb_restrict __restrict__
653#elif ECB_C99
654 #define ecb_restrict restrict
655#else
656 #define ecb_restrict
657#endif
658
659typedef int ecb_bool;
660
661#define ECB_CONCAT_(a, b) a ## b
662#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
663#define ECB_STRINGIFY_(a) # a
664#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
665
666#define ecb_function_ ecb_inline
667
668#if ECB_GCC_VERSION(3,1)
669 #define ecb_attribute(attrlist) __attribute__(attrlist)
670 #define ecb_is_constant(expr) __builtin_constant_p (expr)
671 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
672 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
673#else
674 #define ecb_attribute(attrlist)
675 #define ecb_is_constant(expr) 0
676 #define ecb_expect(expr,value) (expr)
677 #define ecb_prefetch(addr,rw,locality)
678#endif
679
680/* no emulation for ecb_decltype */
681#if ECB_GCC_VERSION(4,5)
682 #define ecb_decltype(x) __decltype(x)
683#elif ECB_GCC_VERSION(3,0)
684 #define ecb_decltype(x) __typeof(x)
685#endif
686
687#define ecb_noinline ecb_attribute ((__noinline__))
688#define ecb_noreturn ecb_attribute ((__noreturn__))
689#define ecb_unused ecb_attribute ((__unused__))
690#define ecb_const ecb_attribute ((__const__))
691#define ecb_pure ecb_attribute ((__pure__))
692
693#if ECB_GCC_VERSION(4,3)
694 #define ecb_artificial ecb_attribute ((__artificial__))
695 #define ecb_hot ecb_attribute ((__hot__))
696 #define ecb_cold ecb_attribute ((__cold__))
697#else
698 #define ecb_artificial
699 #define ecb_hot
700 #define ecb_cold
701#endif
702
703/* put around conditional expressions if you are very sure that the */
704/* expression is mostly true or mostly false. note that these return */
705/* booleans, not the expression. */
310#define expect_false(expr) expect ((expr) != 0, 0) 706#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
311#define expect_true(expr) expect ((expr) != 0, 1) 707#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
708/* for compatibility to the rest of the world */
709#define ecb_likely(expr) ecb_expect_true (expr)
710#define ecb_unlikely(expr) ecb_expect_false (expr)
711
712/* count trailing zero bits and count # of one bits */
713#if ECB_GCC_VERSION(3,4)
714 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
715 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
716 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
717 #define ecb_ctz32(x) __builtin_ctz (x)
718 #define ecb_ctz64(x) __builtin_ctzll (x)
719 #define ecb_popcount32(x) __builtin_popcount (x)
720 /* no popcountll */
721#else
722 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
723 ecb_function_ int
724 ecb_ctz32 (uint32_t x)
725 {
726 int r = 0;
727
728 x &= ~x + 1; /* this isolates the lowest bit */
729
730#if ECB_branchless_on_i386
731 r += !!(x & 0xaaaaaaaa) << 0;
732 r += !!(x & 0xcccccccc) << 1;
733 r += !!(x & 0xf0f0f0f0) << 2;
734 r += !!(x & 0xff00ff00) << 3;
735 r += !!(x & 0xffff0000) << 4;
736#else
737 if (x & 0xaaaaaaaa) r += 1;
738 if (x & 0xcccccccc) r += 2;
739 if (x & 0xf0f0f0f0) r += 4;
740 if (x & 0xff00ff00) r += 8;
741 if (x & 0xffff0000) r += 16;
742#endif
743
744 return r;
745 }
746
747 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
748 ecb_function_ int
749 ecb_ctz64 (uint64_t x)
750 {
751 int shift = x & 0xffffffffU ? 0 : 32;
752 return ecb_ctz32 (x >> shift) + shift;
753 }
754
755 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
756 ecb_function_ int
757 ecb_popcount32 (uint32_t x)
758 {
759 x -= (x >> 1) & 0x55555555;
760 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
761 x = ((x >> 4) + x) & 0x0f0f0f0f;
762 x *= 0x01010101;
763
764 return x >> 24;
765 }
766
767 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
768 ecb_function_ int ecb_ld32 (uint32_t x)
769 {
770 int r = 0;
771
772 if (x >> 16) { x >>= 16; r += 16; }
773 if (x >> 8) { x >>= 8; r += 8; }
774 if (x >> 4) { x >>= 4; r += 4; }
775 if (x >> 2) { x >>= 2; r += 2; }
776 if (x >> 1) { r += 1; }
777
778 return r;
779 }
780
781 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
782 ecb_function_ int ecb_ld64 (uint64_t x)
783 {
784 int r = 0;
785
786 if (x >> 32) { x >>= 32; r += 32; }
787
788 return r + ecb_ld32 (x);
789 }
790#endif
791
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
793ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
794{
795 return ( (x * 0x0802U & 0x22110U)
796 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
797}
798
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
800ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
801{
802 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
803 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
804 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
805 x = ( x >> 8 ) | ( x << 8);
806
807 return x;
808}
809
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
811ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
812{
813 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
814 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
815 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
816 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
817 x = ( x >> 16 ) | ( x << 16);
818
819 return x;
820}
821
822/* popcount64 is only available on 64 bit cpus as gcc builtin */
823/* so for this version we are lazy */
824ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
825ecb_function_ int
826ecb_popcount64 (uint64_t x)
827{
828 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
829}
830
831ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
838ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
839
840ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
841ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
842ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
843ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
844ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
845ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
846ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
847ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
848
849#if ECB_GCC_VERSION(4,3)
850 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
851 #define ecb_bswap32(x) __builtin_bswap32 (x)
852 #define ecb_bswap64(x) __builtin_bswap64 (x)
853#else
854 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
855 ecb_function_ uint16_t
856 ecb_bswap16 (uint16_t x)
857 {
858 return ecb_rotl16 (x, 8);
859 }
860
861 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
862 ecb_function_ uint32_t
863 ecb_bswap32 (uint32_t x)
864 {
865 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
866 }
867
868 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
869 ecb_function_ uint64_t
870 ecb_bswap64 (uint64_t x)
871 {
872 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
873 }
874#endif
875
876#if ECB_GCC_VERSION(4,5)
877 #define ecb_unreachable() __builtin_unreachable ()
878#else
879 /* this seems to work fine, but gcc always emits a warning for it :/ */
880 ecb_inline void ecb_unreachable (void) ecb_noreturn;
881 ecb_inline void ecb_unreachable (void) { }
882#endif
883
884/* try to tell the compiler that some condition is definitely true */
885#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
886
887ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
888ecb_inline unsigned char
889ecb_byteorder_helper (void)
890{
891 const uint32_t u = 0x11223344;
892 return *(unsigned char *)&u;
893}
894
895ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
896ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
897ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
899
900#if ECB_GCC_VERSION(3,0) || ECB_C99
901 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
902#else
903 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
904#endif
905
906#if __cplusplus
907 template<typename T>
908 static inline T ecb_div_rd (T val, T div)
909 {
910 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
911 }
912 template<typename T>
913 static inline T ecb_div_ru (T val, T div)
914 {
915 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
916 }
917#else
918 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
919 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
920#endif
921
922#if ecb_cplusplus_does_not_suck
923 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
924 template<typename T, int N>
925 static inline int ecb_array_length (const T (&arr)[N])
926 {
927 return N;
928 }
929#else
930 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
931#endif
932
933#endif
934
935/* ECB.H END */
936
937#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
938/* if your architecture doesn't need memory fences, e.g. because it is
939 * single-cpu/core, or if you use libev in a project that doesn't use libev
940 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
941 * libev, in which cases the memory fences become nops.
942 * alternatively, you can remove this #error and link against libpthread,
943 * which will then provide the memory fences.
944 */
945# error "memory fences not defined for your architecture, please report"
946#endif
947
948#ifndef ECB_MEMORY_FENCE
949# define ECB_MEMORY_FENCE do { } while (0)
950# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
952#endif
953
954#define expect_false(cond) ecb_expect_false (cond)
955#define expect_true(cond) ecb_expect_true (cond)
956#define noinline ecb_noinline
957
312#define inline_size static inline 958#define inline_size ecb_inline
313 959
314#if EV_MINIMAL 960#if EV_FEATURE_CODE
961# define inline_speed ecb_inline
962#else
315# define inline_speed static noinline 963# define inline_speed static noinline
964#endif
965
966#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
967
968#if EV_MINPRI == EV_MAXPRI
969# define ABSPRI(w) (((W)w), 0)
316#else 970#else
317# define inline_speed static inline
318#endif
319
320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 971# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
972#endif
322 973
323#define EMPTY /* required for microsofts broken pseudo-c compiler */ 974#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */ 975#define EMPTY2(a,b) /* used to suppress some warnings */
325 976
326typedef ev_watcher *W; 977typedef ev_watcher *W;
… …
328typedef ev_watcher_time *WT; 979typedef ev_watcher_time *WT;
329 980
330#define ev_active(w) ((W)(w))->active 981#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at 982#define ev_at(w) ((WT)(w))->at
332 983
984#if EV_USE_REALTIME
985/* sig_atomic_t is used to avoid per-thread variables or locking but still */
986/* giving it a reasonably high chance of working on typical architectures */
987static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
988#endif
989
333#if EV_USE_MONOTONIC 990#if EV_USE_MONOTONIC
334/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335/* giving it a reasonably high chance of working on typical architetcures */
336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 991static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
992#endif
993
994#ifndef EV_FD_TO_WIN32_HANDLE
995# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
996#endif
997#ifndef EV_WIN32_HANDLE_TO_FD
998# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
999#endif
1000#ifndef EV_WIN32_CLOSE_FD
1001# define EV_WIN32_CLOSE_FD(fd) close (fd)
337#endif 1002#endif
338 1003
339#ifdef _WIN32 1004#ifdef _WIN32
340# include "ev_win32.c" 1005# include "ev_win32.c"
341#endif 1006#endif
342 1007
343/*****************************************************************************/ 1008/*****************************************************************************/
344 1009
1010/* define a suitable floor function (only used by periodics atm) */
1011
1012#if EV_USE_FLOOR
1013# include <math.h>
1014# define ev_floor(v) floor (v)
1015#else
1016
1017#include <float.h>
1018
1019/* a floor() replacement function, should be independent of ev_tstamp type */
1020static ev_tstamp noinline
1021ev_floor (ev_tstamp v)
1022{
1023 /* the choice of shift factor is not terribly important */
1024#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1026#else
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1028#endif
1029
1030 /* argument too large for an unsigned long? */
1031 if (expect_false (v >= shift))
1032 {
1033 ev_tstamp f;
1034
1035 if (v == v - 1.)
1036 return v; /* very large number */
1037
1038 f = shift * ev_floor (v * (1. / shift));
1039 return f + ev_floor (v - f);
1040 }
1041
1042 /* special treatment for negative args? */
1043 if (expect_false (v < 0.))
1044 {
1045 ev_tstamp f = -ev_floor (-v);
1046
1047 return f - (f == v ? 0 : 1);
1048 }
1049
1050 /* fits into an unsigned long */
1051 return (unsigned long)v;
1052}
1053
1054#endif
1055
1056/*****************************************************************************/
1057
1058#ifdef __linux
1059# include <sys/utsname.h>
1060#endif
1061
1062static unsigned int noinline ecb_cold
1063ev_linux_version (void)
1064{
1065#ifdef __linux
1066 unsigned int v = 0;
1067 struct utsname buf;
1068 int i;
1069 char *p = buf.release;
1070
1071 if (uname (&buf))
1072 return 0;
1073
1074 for (i = 3+1; --i; )
1075 {
1076 unsigned int c = 0;
1077
1078 for (;;)
1079 {
1080 if (*p >= '0' && *p <= '9')
1081 c = c * 10 + *p++ - '0';
1082 else
1083 {
1084 p += *p == '.';
1085 break;
1086 }
1087 }
1088
1089 v = (v << 8) | c;
1090 }
1091
1092 return v;
1093#else
1094 return 0;
1095#endif
1096}
1097
1098/*****************************************************************************/
1099
1100#if EV_AVOID_STDIO
1101static void noinline ecb_cold
1102ev_printerr (const char *msg)
1103{
1104 write (STDERR_FILENO, msg, strlen (msg));
1105}
1106#endif
1107
345static void (*syserr_cb)(const char *msg); 1108static void (*syserr_cb)(const char *msg);
346 1109
347void 1110void ecb_cold
348ev_set_syserr_cb (void (*cb)(const char *msg)) 1111ev_set_syserr_cb (void (*cb)(const char *msg))
349{ 1112{
350 syserr_cb = cb; 1113 syserr_cb = cb;
351} 1114}
352 1115
353static void noinline 1116static void noinline ecb_cold
354syserr (const char *msg) 1117ev_syserr (const char *msg)
355{ 1118{
356 if (!msg) 1119 if (!msg)
357 msg = "(libev) system error"; 1120 msg = "(libev) system error";
358 1121
359 if (syserr_cb) 1122 if (syserr_cb)
360 syserr_cb (msg); 1123 syserr_cb (msg);
361 else 1124 else
362 { 1125 {
1126#if EV_AVOID_STDIO
1127 ev_printerr (msg);
1128 ev_printerr (": ");
1129 ev_printerr (strerror (errno));
1130 ev_printerr ("\n");
1131#else
363 perror (msg); 1132 perror (msg);
1133#endif
364 abort (); 1134 abort ();
365 } 1135 }
366} 1136}
367 1137
368static void * 1138static void *
369ev_realloc_emul (void *ptr, long size) 1139ev_realloc_emul (void *ptr, long size)
370{ 1140{
1141#if __GLIBC__
1142 return realloc (ptr, size);
1143#else
371 /* some systems, notably openbsd and darwin, fail to properly 1144 /* some systems, notably openbsd and darwin, fail to properly
372 * implement realloc (x, 0) (as required by both ansi c-98 and 1145 * implement realloc (x, 0) (as required by both ansi c-89 and
373 * the single unix specification, so work around them here. 1146 * the single unix specification, so work around them here.
374 */ 1147 */
375 1148
376 if (size) 1149 if (size)
377 return realloc (ptr, size); 1150 return realloc (ptr, size);
378 1151
379 free (ptr); 1152 free (ptr);
380 return 0; 1153 return 0;
1154#endif
381} 1155}
382 1156
383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1157static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
384 1158
385void 1159void ecb_cold
386ev_set_allocator (void *(*cb)(void *ptr, long size)) 1160ev_set_allocator (void *(*cb)(void *ptr, long size))
387{ 1161{
388 alloc = cb; 1162 alloc = cb;
389} 1163}
390 1164
… …
393{ 1167{
394 ptr = alloc (ptr, size); 1168 ptr = alloc (ptr, size);
395 1169
396 if (!ptr && size) 1170 if (!ptr && size)
397 { 1171 {
1172#if EV_AVOID_STDIO
1173 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1174#else
398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1175 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1176#endif
399 abort (); 1177 abort ();
400 } 1178 }
401 1179
402 return ptr; 1180 return ptr;
403} 1181}
… …
405#define ev_malloc(size) ev_realloc (0, (size)) 1183#define ev_malloc(size) ev_realloc (0, (size))
406#define ev_free(ptr) ev_realloc ((ptr), 0) 1184#define ev_free(ptr) ev_realloc ((ptr), 0)
407 1185
408/*****************************************************************************/ 1186/*****************************************************************************/
409 1187
1188/* set in reify when reification needed */
1189#define EV_ANFD_REIFY 1
1190
1191/* file descriptor info structure */
410typedef struct 1192typedef struct
411{ 1193{
412 WL head; 1194 WL head;
413 unsigned char events; 1195 unsigned char events; /* the events watched for */
1196 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1197 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414 unsigned char reify; 1198 unsigned char unused;
1199#if EV_USE_EPOLL
1200 unsigned int egen; /* generation counter to counter epoll bugs */
1201#endif
415#if EV_SELECT_IS_WINSOCKET 1202#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
416 SOCKET handle; 1203 SOCKET handle;
417#endif 1204#endif
1205#if EV_USE_IOCP
1206 OVERLAPPED or, ow;
1207#endif
418} ANFD; 1208} ANFD;
419 1209
1210/* stores the pending event set for a given watcher */
420typedef struct 1211typedef struct
421{ 1212{
422 W w; 1213 W w;
423 int events; 1214 int events; /* the pending event set for the given watcher */
424} ANPENDING; 1215} ANPENDING;
425 1216
426#if EV_USE_INOTIFY 1217#if EV_USE_INOTIFY
1218/* hash table entry per inotify-id */
427typedef struct 1219typedef struct
428{ 1220{
429 WL head; 1221 WL head;
430} ANFS; 1222} ANFS;
1223#endif
1224
1225/* Heap Entry */
1226#if EV_HEAP_CACHE_AT
1227 /* a heap element */
1228 typedef struct {
1229 ev_tstamp at;
1230 WT w;
1231 } ANHE;
1232
1233 #define ANHE_w(he) (he).w /* access watcher, read-write */
1234 #define ANHE_at(he) (he).at /* access cached at, read-only */
1235 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
1236#else
1237 /* a heap element */
1238 typedef WT ANHE;
1239
1240 #define ANHE_w(he) (he)
1241 #define ANHE_at(he) (he)->at
1242 #define ANHE_at_cache(he)
431#endif 1243#endif
432 1244
433#if EV_MULTIPLICITY 1245#if EV_MULTIPLICITY
434 1246
435 struct ev_loop 1247 struct ev_loop
… …
441 #undef VAR 1253 #undef VAR
442 }; 1254 };
443 #include "ev_wrap.h" 1255 #include "ev_wrap.h"
444 1256
445 static struct ev_loop default_loop_struct; 1257 static struct ev_loop default_loop_struct;
446 struct ev_loop *ev_default_loop_ptr; 1258 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
447 1259
448#else 1260#else
449 1261
450 ev_tstamp ev_rt_now; 1262 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
451 #define VAR(name,decl) static decl; 1263 #define VAR(name,decl) static decl;
452 #include "ev_vars.h" 1264 #include "ev_vars.h"
453 #undef VAR 1265 #undef VAR
454 1266
455 static int ev_default_loop_ptr; 1267 static int ev_default_loop_ptr;
456 1268
457#endif 1269#endif
458 1270
1271#if EV_FEATURE_API
1272# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1273# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1274# define EV_INVOKE_PENDING invoke_cb (EV_A)
1275#else
1276# define EV_RELEASE_CB (void)0
1277# define EV_ACQUIRE_CB (void)0
1278# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1279#endif
1280
1281#define EVBREAK_RECURSE 0x80
1282
459/*****************************************************************************/ 1283/*****************************************************************************/
460 1284
1285#ifndef EV_HAVE_EV_TIME
461ev_tstamp 1286ev_tstamp
462ev_time (void) 1287ev_time (void)
463{ 1288{
464#if EV_USE_REALTIME 1289#if EV_USE_REALTIME
1290 if (expect_true (have_realtime))
1291 {
465 struct timespec ts; 1292 struct timespec ts;
466 clock_gettime (CLOCK_REALTIME, &ts); 1293 clock_gettime (CLOCK_REALTIME, &ts);
467 return ts.tv_sec + ts.tv_nsec * 1e-9; 1294 return ts.tv_sec + ts.tv_nsec * 1e-9;
468#else 1295 }
1296#endif
1297
469 struct timeval tv; 1298 struct timeval tv;
470 gettimeofday (&tv, 0); 1299 gettimeofday (&tv, 0);
471 return tv.tv_sec + tv.tv_usec * 1e-6; 1300 return tv.tv_sec + tv.tv_usec * 1e-6;
472#endif
473} 1301}
1302#endif
474 1303
475ev_tstamp inline_size 1304inline_size ev_tstamp
476get_clock (void) 1305get_clock (void)
477{ 1306{
478#if EV_USE_MONOTONIC 1307#if EV_USE_MONOTONIC
479 if (expect_true (have_monotonic)) 1308 if (expect_true (have_monotonic))
480 { 1309 {
… …
501 if (delay > 0.) 1330 if (delay > 0.)
502 { 1331 {
503#if EV_USE_NANOSLEEP 1332#if EV_USE_NANOSLEEP
504 struct timespec ts; 1333 struct timespec ts;
505 1334
506 ts.tv_sec = (time_t)delay; 1335 EV_TS_SET (ts, delay);
507 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
508
509 nanosleep (&ts, 0); 1336 nanosleep (&ts, 0);
510#elif defined(_WIN32) 1337#elif defined(_WIN32)
511 Sleep ((unsigned long)(delay * 1e3)); 1338 Sleep ((unsigned long)(delay * 1e3));
512#else 1339#else
513 struct timeval tv; 1340 struct timeval tv;
514 1341
515 tv.tv_sec = (time_t)delay; 1342 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 1343 /* something not guaranteed by newer posix versions, but guaranteed */
517 1344 /* by older ones */
1345 EV_TV_SET (tv, delay);
518 select (0, 0, 0, 0, &tv); 1346 select (0, 0, 0, 0, &tv);
519#endif 1347#endif
520 } 1348 }
521} 1349}
522 1350
523/*****************************************************************************/ 1351/*****************************************************************************/
524 1352
525int inline_size 1353#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
1354
1355/* find a suitable new size for the given array, */
1356/* hopefully by rounding to a nice-to-malloc size */
1357inline_size int
526array_nextsize (int elem, int cur, int cnt) 1358array_nextsize (int elem, int cur, int cnt)
527{ 1359{
528 int ncur = cur + 1; 1360 int ncur = cur + 1;
529 1361
530 do 1362 do
531 ncur <<= 1; 1363 ncur <<= 1;
532 while (cnt > ncur); 1364 while (cnt > ncur);
533 1365
534 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 1366 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
535 if (elem * ncur > 4096) 1367 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
536 { 1368 {
537 ncur *= elem; 1369 ncur *= elem;
538 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 1370 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
539 ncur = ncur - sizeof (void *) * 4; 1371 ncur = ncur - sizeof (void *) * 4;
540 ncur /= elem; 1372 ncur /= elem;
541 } 1373 }
542 1374
543 return ncur; 1375 return ncur;
544} 1376}
545 1377
546static noinline void * 1378static void * noinline ecb_cold
547array_realloc (int elem, void *base, int *cur, int cnt) 1379array_realloc (int elem, void *base, int *cur, int cnt)
548{ 1380{
549 *cur = array_nextsize (elem, *cur, cnt); 1381 *cur = array_nextsize (elem, *cur, cnt);
550 return ev_realloc (base, elem * *cur); 1382 return ev_realloc (base, elem * *cur);
551} 1383}
1384
1385#define array_init_zero(base,count) \
1386 memset ((void *)(base), 0, sizeof (*(base)) * (count))
552 1387
553#define array_needsize(type,base,cur,cnt,init) \ 1388#define array_needsize(type,base,cur,cnt,init) \
554 if (expect_false ((cnt) > (cur))) \ 1389 if (expect_false ((cnt) > (cur))) \
555 { \ 1390 { \
556 int ocur_ = (cur); \ 1391 int ecb_unused ocur_ = (cur); \
557 (base) = (type *)array_realloc \ 1392 (base) = (type *)array_realloc \
558 (sizeof (type), (base), &(cur), (cnt)); \ 1393 (sizeof (type), (base), &(cur), (cnt)); \
559 init ((base) + (ocur_), (cur) - ocur_); \ 1394 init ((base) + (ocur_), (cur) - ocur_); \
560 } 1395 }
561 1396
… …
568 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1403 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
569 } 1404 }
570#endif 1405#endif
571 1406
572#define array_free(stem, idx) \ 1407#define array_free(stem, idx) \
573 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1408 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
574 1409
575/*****************************************************************************/ 1410/*****************************************************************************/
1411
1412/* dummy callback for pending events */
1413static void noinline
1414pendingcb (EV_P_ ev_prepare *w, int revents)
1415{
1416}
576 1417
577void noinline 1418void noinline
578ev_feed_event (EV_P_ void *w, int revents) 1419ev_feed_event (EV_P_ void *w, int revents)
579{ 1420{
580 W w_ = (W)w; 1421 W w_ = (W)w;
… …
589 pendings [pri][w_->pending - 1].w = w_; 1430 pendings [pri][w_->pending - 1].w = w_;
590 pendings [pri][w_->pending - 1].events = revents; 1431 pendings [pri][w_->pending - 1].events = revents;
591 } 1432 }
592} 1433}
593 1434
594void inline_speed 1435inline_speed void
1436feed_reverse (EV_P_ W w)
1437{
1438 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1439 rfeeds [rfeedcnt++] = w;
1440}
1441
1442inline_size void
1443feed_reverse_done (EV_P_ int revents)
1444{
1445 do
1446 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1447 while (rfeedcnt);
1448}
1449
1450inline_speed void
595queue_events (EV_P_ W *events, int eventcnt, int type) 1451queue_events (EV_P_ W *events, int eventcnt, int type)
596{ 1452{
597 int i; 1453 int i;
598 1454
599 for (i = 0; i < eventcnt; ++i) 1455 for (i = 0; i < eventcnt; ++i)
600 ev_feed_event (EV_A_ events [i], type); 1456 ev_feed_event (EV_A_ events [i], type);
601} 1457}
602 1458
603/*****************************************************************************/ 1459/*****************************************************************************/
604 1460
605void inline_size 1461inline_speed void
606anfds_init (ANFD *base, int count)
607{
608 while (count--)
609 {
610 base->head = 0;
611 base->events = EV_NONE;
612 base->reify = 0;
613
614 ++base;
615 }
616}
617
618void inline_speed
619fd_event (EV_P_ int fd, int revents) 1462fd_event_nocheck (EV_P_ int fd, int revents)
620{ 1463{
621 ANFD *anfd = anfds + fd; 1464 ANFD *anfd = anfds + fd;
622 ev_io *w; 1465 ev_io *w;
623 1466
624 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1467 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
628 if (ev) 1471 if (ev)
629 ev_feed_event (EV_A_ (W)w, ev); 1472 ev_feed_event (EV_A_ (W)w, ev);
630 } 1473 }
631} 1474}
632 1475
1476/* do not submit kernel events for fds that have reify set */
1477/* because that means they changed while we were polling for new events */
1478inline_speed void
1479fd_event (EV_P_ int fd, int revents)
1480{
1481 ANFD *anfd = anfds + fd;
1482
1483 if (expect_true (!anfd->reify))
1484 fd_event_nocheck (EV_A_ fd, revents);
1485}
1486
633void 1487void
634ev_feed_fd_event (EV_P_ int fd, int revents) 1488ev_feed_fd_event (EV_P_ int fd, int revents)
635{ 1489{
636 if (fd >= 0 && fd < anfdmax) 1490 if (fd >= 0 && fd < anfdmax)
637 fd_event (EV_A_ fd, revents); 1491 fd_event_nocheck (EV_A_ fd, revents);
638} 1492}
639 1493
640void inline_size 1494/* make sure the external fd watch events are in-sync */
1495/* with the kernel/libev internal state */
1496inline_size void
641fd_reify (EV_P) 1497fd_reify (EV_P)
642{ 1498{
643 int i; 1499 int i;
1500
1501#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1502 for (i = 0; i < fdchangecnt; ++i)
1503 {
1504 int fd = fdchanges [i];
1505 ANFD *anfd = anfds + fd;
1506
1507 if (anfd->reify & EV__IOFDSET && anfd->head)
1508 {
1509 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1510
1511 if (handle != anfd->handle)
1512 {
1513 unsigned long arg;
1514
1515 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1516
1517 /* handle changed, but fd didn't - we need to do it in two steps */
1518 backend_modify (EV_A_ fd, anfd->events, 0);
1519 anfd->events = 0;
1520 anfd->handle = handle;
1521 }
1522 }
1523 }
1524#endif
644 1525
645 for (i = 0; i < fdchangecnt; ++i) 1526 for (i = 0; i < fdchangecnt; ++i)
646 { 1527 {
647 int fd = fdchanges [i]; 1528 int fd = fdchanges [i];
648 ANFD *anfd = anfds + fd; 1529 ANFD *anfd = anfds + fd;
649 ev_io *w; 1530 ev_io *w;
650 1531
651 unsigned char events = 0; 1532 unsigned char o_events = anfd->events;
1533 unsigned char o_reify = anfd->reify;
652 1534
653 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1535 anfd->reify = 0;
654 events |= (unsigned char)w->events;
655 1536
656#if EV_SELECT_IS_WINSOCKET 1537 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
657 if (events)
658 { 1538 {
659 unsigned long argp; 1539 anfd->events = 0;
660 #ifdef EV_FD_TO_WIN32_HANDLE 1540
661 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
662 #else 1542 anfd->events |= (unsigned char)w->events;
663 anfd->handle = _get_osfhandle (fd); 1543
664 #endif 1544 if (o_events != anfd->events)
665 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1545 o_reify = EV__IOFDSET; /* actually |= */
666 } 1546 }
667#endif
668 1547
669 { 1548 if (o_reify & EV__IOFDSET)
670 unsigned char o_events = anfd->events;
671 unsigned char o_reify = anfd->reify;
672
673 anfd->reify = 0;
674 anfd->events = events;
675
676 if (o_events != events || o_reify & EV_IOFDSET)
677 backend_modify (EV_A_ fd, o_events, events); 1549 backend_modify (EV_A_ fd, o_events, anfd->events);
678 }
679 } 1550 }
680 1551
681 fdchangecnt = 0; 1552 fdchangecnt = 0;
682} 1553}
683 1554
684void inline_size 1555/* something about the given fd changed */
1556inline_size void
685fd_change (EV_P_ int fd, int flags) 1557fd_change (EV_P_ int fd, int flags)
686{ 1558{
687 unsigned char reify = anfds [fd].reify; 1559 unsigned char reify = anfds [fd].reify;
688 anfds [fd].reify |= flags; 1560 anfds [fd].reify |= flags;
689 1561
… …
693 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1565 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
694 fdchanges [fdchangecnt - 1] = fd; 1566 fdchanges [fdchangecnt - 1] = fd;
695 } 1567 }
696} 1568}
697 1569
698void inline_speed 1570/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1571inline_speed void ecb_cold
699fd_kill (EV_P_ int fd) 1572fd_kill (EV_P_ int fd)
700{ 1573{
701 ev_io *w; 1574 ev_io *w;
702 1575
703 while ((w = (ev_io *)anfds [fd].head)) 1576 while ((w = (ev_io *)anfds [fd].head))
… …
705 ev_io_stop (EV_A_ w); 1578 ev_io_stop (EV_A_ w);
706 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1579 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
707 } 1580 }
708} 1581}
709 1582
710int inline_size 1583/* check whether the given fd is actually valid, for error recovery */
1584inline_size int ecb_cold
711fd_valid (int fd) 1585fd_valid (int fd)
712{ 1586{
713#ifdef _WIN32 1587#ifdef _WIN32
714 return _get_osfhandle (fd) != -1; 1588 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
715#else 1589#else
716 return fcntl (fd, F_GETFD) != -1; 1590 return fcntl (fd, F_GETFD) != -1;
717#endif 1591#endif
718} 1592}
719 1593
720/* called on EBADF to verify fds */ 1594/* called on EBADF to verify fds */
721static void noinline 1595static void noinline ecb_cold
722fd_ebadf (EV_P) 1596fd_ebadf (EV_P)
723{ 1597{
724 int fd; 1598 int fd;
725 1599
726 for (fd = 0; fd < anfdmax; ++fd) 1600 for (fd = 0; fd < anfdmax; ++fd)
727 if (anfds [fd].events) 1601 if (anfds [fd].events)
728 if (!fd_valid (fd) == -1 && errno == EBADF) 1602 if (!fd_valid (fd) && errno == EBADF)
729 fd_kill (EV_A_ fd); 1603 fd_kill (EV_A_ fd);
730} 1604}
731 1605
732/* called on ENOMEM in select/poll to kill some fds and retry */ 1606/* called on ENOMEM in select/poll to kill some fds and retry */
733static void noinline 1607static void noinline ecb_cold
734fd_enomem (EV_P) 1608fd_enomem (EV_P)
735{ 1609{
736 int fd; 1610 int fd;
737 1611
738 for (fd = anfdmax; fd--; ) 1612 for (fd = anfdmax; fd--; )
739 if (anfds [fd].events) 1613 if (anfds [fd].events)
740 { 1614 {
741 fd_kill (EV_A_ fd); 1615 fd_kill (EV_A_ fd);
742 return; 1616 break;
743 } 1617 }
744} 1618}
745 1619
746/* usually called after fork if backend needs to re-arm all fds from scratch */ 1620/* usually called after fork if backend needs to re-arm all fds from scratch */
747static void noinline 1621static void noinline
… …
751 1625
752 for (fd = 0; fd < anfdmax; ++fd) 1626 for (fd = 0; fd < anfdmax; ++fd)
753 if (anfds [fd].events) 1627 if (anfds [fd].events)
754 { 1628 {
755 anfds [fd].events = 0; 1629 anfds [fd].events = 0;
1630 anfds [fd].emask = 0;
756 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1631 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
757 } 1632 }
758} 1633}
759 1634
760/*****************************************************************************/ 1635/* used to prepare libev internal fd's */
761 1636/* this is not fork-safe */
762/* towards the root */ 1637inline_speed void
763void inline_speed
764upheap (WT *heap, int k)
765{
766 WT w = heap [k];
767
768 for (;;)
769 {
770 int p = k >> 1;
771
772 /* maybe we could use a dummy element at heap [0]? */
773 if (!p || heap [p]->at <= w->at)
774 break;
775
776 heap [k] = heap [p];
777 ev_active (heap [k]) = k;
778 k = p;
779 }
780
781 heap [k] = w;
782 ev_active (heap [k]) = k;
783}
784
785/* away from the root */
786void inline_speed
787downheap (WT *heap, int N, int k)
788{
789 WT w = heap [k];
790
791 for (;;)
792 {
793 int c = k << 1;
794
795 if (c > N)
796 break;
797
798 c += c < N && heap [c]->at > heap [c + 1]->at
799 ? 1 : 0;
800
801 if (w->at <= heap [c]->at)
802 break;
803
804 heap [k] = heap [c];
805 ev_active (heap [k]) = k;
806
807 k = c;
808 }
809
810 heap [k] = w;
811 ev_active (heap [k]) = k;
812}
813
814void inline_size
815adjustheap (WT *heap, int N, int k)
816{
817 upheap (heap, k);
818 downheap (heap, N, k);
819}
820
821/*****************************************************************************/
822
823typedef struct
824{
825 WL head;
826 EV_ATOMIC_T gotsig;
827} ANSIG;
828
829static ANSIG *signals;
830static int signalmax;
831
832static EV_ATOMIC_T gotsig;
833
834void inline_size
835signals_init (ANSIG *base, int count)
836{
837 while (count--)
838 {
839 base->head = 0;
840 base->gotsig = 0;
841
842 ++base;
843 }
844}
845
846/*****************************************************************************/
847
848void inline_speed
849fd_intern (int fd) 1638fd_intern (int fd)
850{ 1639{
851#ifdef _WIN32 1640#ifdef _WIN32
852 int arg = 1; 1641 unsigned long arg = 1;
853 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1642 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
854#else 1643#else
855 fcntl (fd, F_SETFD, FD_CLOEXEC); 1644 fcntl (fd, F_SETFD, FD_CLOEXEC);
856 fcntl (fd, F_SETFL, O_NONBLOCK); 1645 fcntl (fd, F_SETFL, O_NONBLOCK);
857#endif 1646#endif
858} 1647}
859 1648
1649/*****************************************************************************/
1650
1651/*
1652 * the heap functions want a real array index. array index 0 is guaranteed to not
1653 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1654 * the branching factor of the d-tree.
1655 */
1656
1657/*
1658 * at the moment we allow libev the luxury of two heaps,
1659 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1660 * which is more cache-efficient.
1661 * the difference is about 5% with 50000+ watchers.
1662 */
1663#if EV_USE_4HEAP
1664
1665#define DHEAP 4
1666#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1667#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1668#define UPHEAP_DONE(p,k) ((p) == (k))
1669
1670/* away from the root */
1671inline_speed void
1672downheap (ANHE *heap, int N, int k)
1673{
1674 ANHE he = heap [k];
1675 ANHE *E = heap + N + HEAP0;
1676
1677 for (;;)
1678 {
1679 ev_tstamp minat;
1680 ANHE *minpos;
1681 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1682
1683 /* find minimum child */
1684 if (expect_true (pos + DHEAP - 1 < E))
1685 {
1686 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1687 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1688 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1689 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1690 }
1691 else if (pos < E)
1692 {
1693 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1694 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1695 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1696 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1697 }
1698 else
1699 break;
1700
1701 if (ANHE_at (he) <= minat)
1702 break;
1703
1704 heap [k] = *minpos;
1705 ev_active (ANHE_w (*minpos)) = k;
1706
1707 k = minpos - heap;
1708 }
1709
1710 heap [k] = he;
1711 ev_active (ANHE_w (he)) = k;
1712}
1713
1714#else /* 4HEAP */
1715
1716#define HEAP0 1
1717#define HPARENT(k) ((k) >> 1)
1718#define UPHEAP_DONE(p,k) (!(p))
1719
1720/* away from the root */
1721inline_speed void
1722downheap (ANHE *heap, int N, int k)
1723{
1724 ANHE he = heap [k];
1725
1726 for (;;)
1727 {
1728 int c = k << 1;
1729
1730 if (c >= N + HEAP0)
1731 break;
1732
1733 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1734 ? 1 : 0;
1735
1736 if (ANHE_at (he) <= ANHE_at (heap [c]))
1737 break;
1738
1739 heap [k] = heap [c];
1740 ev_active (ANHE_w (heap [k])) = k;
1741
1742 k = c;
1743 }
1744
1745 heap [k] = he;
1746 ev_active (ANHE_w (he)) = k;
1747}
1748#endif
1749
1750/* towards the root */
1751inline_speed void
1752upheap (ANHE *heap, int k)
1753{
1754 ANHE he = heap [k];
1755
1756 for (;;)
1757 {
1758 int p = HPARENT (k);
1759
1760 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1761 break;
1762
1763 heap [k] = heap [p];
1764 ev_active (ANHE_w (heap [k])) = k;
1765 k = p;
1766 }
1767
1768 heap [k] = he;
1769 ev_active (ANHE_w (he)) = k;
1770}
1771
1772/* move an element suitably so it is in a correct place */
1773inline_size void
1774adjustheap (ANHE *heap, int N, int k)
1775{
1776 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1777 upheap (heap, k);
1778 else
1779 downheap (heap, N, k);
1780}
1781
1782/* rebuild the heap: this function is used only once and executed rarely */
1783inline_size void
1784reheap (ANHE *heap, int N)
1785{
1786 int i;
1787
1788 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1789 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1790 for (i = 0; i < N; ++i)
1791 upheap (heap, i + HEAP0);
1792}
1793
1794/*****************************************************************************/
1795
1796/* associate signal watchers to a signal signal */
1797typedef struct
1798{
1799 EV_ATOMIC_T pending;
1800#if EV_MULTIPLICITY
1801 EV_P;
1802#endif
1803 WL head;
1804} ANSIG;
1805
1806static ANSIG signals [EV_NSIG - 1];
1807
1808/*****************************************************************************/
1809
1810#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1811
860static void noinline 1812static void noinline ecb_cold
861evpipe_init (EV_P) 1813evpipe_init (EV_P)
862{ 1814{
863 if (!ev_is_active (&pipeev)) 1815 if (!ev_is_active (&pipe_w))
864 { 1816 {
865#if EV_USE_EVENTFD 1817# if EV_USE_EVENTFD
1818 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1819 if (evfd < 0 && errno == EINVAL)
866 if ((evfd = eventfd (0, 0)) >= 0) 1820 evfd = eventfd (0, 0);
1821
1822 if (evfd >= 0)
867 { 1823 {
868 evpipe [0] = -1; 1824 evpipe [0] = -1;
869 fd_intern (evfd); 1825 fd_intern (evfd); /* doing it twice doesn't hurt */
870 ev_io_set (&pipeev, evfd, EV_READ); 1826 ev_io_set (&pipe_w, evfd, EV_READ);
871 } 1827 }
872 else 1828 else
873#endif 1829# endif
874 { 1830 {
875 while (pipe (evpipe)) 1831 while (pipe (evpipe))
876 syserr ("(libev) error creating signal/async pipe"); 1832 ev_syserr ("(libev) error creating signal/async pipe");
877 1833
878 fd_intern (evpipe [0]); 1834 fd_intern (evpipe [0]);
879 fd_intern (evpipe [1]); 1835 fd_intern (evpipe [1]);
880 ev_io_set (&pipeev, evpipe [0], EV_READ); 1836 ev_io_set (&pipe_w, evpipe [0], EV_READ);
881 } 1837 }
882 1838
883 ev_io_start (EV_A_ &pipeev); 1839 ev_io_start (EV_A_ &pipe_w);
884 ev_unref (EV_A); /* watcher should not keep loop alive */ 1840 ev_unref (EV_A); /* watcher should not keep loop alive */
885 } 1841 }
886} 1842}
887 1843
888void inline_size 1844inline_speed void
889evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1845evpipe_write (EV_P_ EV_ATOMIC_T *flag)
890{ 1846{
891 if (!*flag) 1847 if (expect_true (*flag))
1848 return;
1849
1850 *flag = 1;
1851
1852 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1853
1854 pipe_write_skipped = 1;
1855
1856 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1857
1858 if (pipe_write_wanted)
892 { 1859 {
1860 int old_errno;
1861
1862 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1863
893 int old_errno = errno; /* save errno because write might clobber it */ 1864 old_errno = errno; /* save errno because write will clobber it */
894
895 *flag = 1;
896 1865
897#if EV_USE_EVENTFD 1866#if EV_USE_EVENTFD
898 if (evfd >= 0) 1867 if (evfd >= 0)
899 { 1868 {
900 uint64_t counter = 1; 1869 uint64_t counter = 1;
901 write (evfd, &counter, sizeof (uint64_t)); 1870 write (evfd, &counter, sizeof (uint64_t));
902 } 1871 }
903 else 1872 else
904#endif 1873#endif
1874 {
1875 /* win32 people keep sending patches that change this write() to send() */
1876 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1877 /* so when you think this write should be a send instead, please find out */
1878 /* where your send() is from - it's definitely not the microsoft send, and */
1879 /* tell me. thank you. */
1880 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1881 /* check the ev documentation on how to use this flag */
905 write (evpipe [1], &old_errno, 1); 1882 write (evpipe [1], &(evpipe [1]), 1);
1883 }
906 1884
907 errno = old_errno; 1885 errno = old_errno;
908 } 1886 }
909} 1887}
910 1888
1889/* called whenever the libev signal pipe */
1890/* got some events (signal, async) */
911static void 1891static void
912pipecb (EV_P_ ev_io *iow, int revents) 1892pipecb (EV_P_ ev_io *iow, int revents)
913{ 1893{
1894 int i;
1895
1896 if (revents & EV_READ)
1897 {
914#if EV_USE_EVENTFD 1898#if EV_USE_EVENTFD
915 if (evfd >= 0) 1899 if (evfd >= 0)
916 { 1900 {
917 uint64_t counter = 1; 1901 uint64_t counter;
918 read (evfd, &counter, sizeof (uint64_t)); 1902 read (evfd, &counter, sizeof (uint64_t));
919 } 1903 }
920 else 1904 else
921#endif 1905#endif
922 { 1906 {
923 char dummy; 1907 char dummy;
1908 /* see discussion in evpipe_write when you think this read should be recv in win32 */
924 read (evpipe [0], &dummy, 1); 1909 read (evpipe [0], &dummy, 1);
1910 }
1911 }
1912
1913 pipe_write_skipped = 0;
1914
1915#if EV_SIGNAL_ENABLE
1916 if (sig_pending)
925 } 1917 {
1918 sig_pending = 0;
926 1919
927 if (gotsig && ev_is_default_loop (EV_A)) 1920 for (i = EV_NSIG - 1; i--; )
928 { 1921 if (expect_false (signals [i].pending))
929 int signum;
930 gotsig = 0;
931
932 for (signum = signalmax; signum--; )
933 if (signals [signum].gotsig)
934 ev_feed_signal_event (EV_A_ signum + 1); 1922 ev_feed_signal_event (EV_A_ i + 1);
935 } 1923 }
1924#endif
936 1925
937#if EV_ASYNC_ENABLE 1926#if EV_ASYNC_ENABLE
938 if (gotasync) 1927 if (async_pending)
939 { 1928 {
940 int i; 1929 async_pending = 0;
941 gotasync = 0;
942 1930
943 for (i = asynccnt; i--; ) 1931 for (i = asynccnt; i--; )
944 if (asyncs [i]->sent) 1932 if (asyncs [i]->sent)
945 { 1933 {
946 asyncs [i]->sent = 0; 1934 asyncs [i]->sent = 0;
… …
950#endif 1938#endif
951} 1939}
952 1940
953/*****************************************************************************/ 1941/*****************************************************************************/
954 1942
1943void
1944ev_feed_signal (int signum)
1945{
1946#if EV_MULTIPLICITY
1947 EV_P = signals [signum - 1].loop;
1948
1949 if (!EV_A)
1950 return;
1951#endif
1952
1953 if (!ev_active (&pipe_w))
1954 return;
1955
1956 signals [signum - 1].pending = 1;
1957 evpipe_write (EV_A_ &sig_pending);
1958}
1959
955static void 1960static void
956ev_sighandler (int signum) 1961ev_sighandler (int signum)
957{ 1962{
958#if EV_MULTIPLICITY
959 struct ev_loop *loop = &default_loop_struct;
960#endif
961
962#if _WIN32 1963#ifdef _WIN32
963 signal (signum, ev_sighandler); 1964 signal (signum, ev_sighandler);
964#endif 1965#endif
965 1966
966 signals [signum - 1].gotsig = 1; 1967 ev_feed_signal (signum);
967 evpipe_write (EV_A_ &gotsig);
968} 1968}
969 1969
970void noinline 1970void noinline
971ev_feed_signal_event (EV_P_ int signum) 1971ev_feed_signal_event (EV_P_ int signum)
972{ 1972{
973 WL w; 1973 WL w;
974 1974
1975 if (expect_false (signum <= 0 || signum > EV_NSIG))
1976 return;
1977
1978 --signum;
1979
975#if EV_MULTIPLICITY 1980#if EV_MULTIPLICITY
976 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1981 /* it is permissible to try to feed a signal to the wrong loop */
977#endif 1982 /* or, likely more useful, feeding a signal nobody is waiting for */
978 1983
979 --signum; 1984 if (expect_false (signals [signum].loop != EV_A))
980
981 if (signum < 0 || signum >= signalmax)
982 return; 1985 return;
1986#endif
983 1987
984 signals [signum].gotsig = 0; 1988 signals [signum].pending = 0;
985 1989
986 for (w = signals [signum].head; w; w = w->next) 1990 for (w = signals [signum].head; w; w = w->next)
987 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1991 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
988} 1992}
989 1993
1994#if EV_USE_SIGNALFD
1995static void
1996sigfdcb (EV_P_ ev_io *iow, int revents)
1997{
1998 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1999
2000 for (;;)
2001 {
2002 ssize_t res = read (sigfd, si, sizeof (si));
2003
2004 /* not ISO-C, as res might be -1, but works with SuS */
2005 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2006 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2007
2008 if (res < (ssize_t)sizeof (si))
2009 break;
2010 }
2011}
2012#endif
2013
2014#endif
2015
990/*****************************************************************************/ 2016/*****************************************************************************/
991 2017
2018#if EV_CHILD_ENABLE
992static WL childs [EV_PID_HASHSIZE]; 2019static WL childs [EV_PID_HASHSIZE];
993
994#ifndef _WIN32
995 2020
996static ev_signal childev; 2021static ev_signal childev;
997 2022
998#ifndef WIFCONTINUED 2023#ifndef WIFCONTINUED
999# define WIFCONTINUED(status) 0 2024# define WIFCONTINUED(status) 0
1000#endif 2025#endif
1001 2026
1002void inline_speed 2027/* handle a single child status event */
2028inline_speed void
1003child_reap (EV_P_ int chain, int pid, int status) 2029child_reap (EV_P_ int chain, int pid, int status)
1004{ 2030{
1005 ev_child *w; 2031 ev_child *w;
1006 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2032 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1007 2033
1008 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2034 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1009 { 2035 {
1010 if ((w->pid == pid || !w->pid) 2036 if ((w->pid == pid || !w->pid)
1011 && (!traced || (w->flags & 1))) 2037 && (!traced || (w->flags & 1)))
1012 { 2038 {
1013 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2039 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1020 2046
1021#ifndef WCONTINUED 2047#ifndef WCONTINUED
1022# define WCONTINUED 0 2048# define WCONTINUED 0
1023#endif 2049#endif
1024 2050
2051/* called on sigchld etc., calls waitpid */
1025static void 2052static void
1026childcb (EV_P_ ev_signal *sw, int revents) 2053childcb (EV_P_ ev_signal *sw, int revents)
1027{ 2054{
1028 int pid, status; 2055 int pid, status;
1029 2056
… …
1037 /* make sure we are called again until all children have been reaped */ 2064 /* make sure we are called again until all children have been reaped */
1038 /* we need to do it this way so that the callback gets called before we continue */ 2065 /* we need to do it this way so that the callback gets called before we continue */
1039 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2066 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1040 2067
1041 child_reap (EV_A_ pid, pid, status); 2068 child_reap (EV_A_ pid, pid, status);
1042 if (EV_PID_HASHSIZE > 1) 2069 if ((EV_PID_HASHSIZE) > 1)
1043 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2070 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1044} 2071}
1045 2072
1046#endif 2073#endif
1047 2074
1048/*****************************************************************************/ 2075/*****************************************************************************/
1049 2076
2077#if EV_USE_IOCP
2078# include "ev_iocp.c"
2079#endif
1050#if EV_USE_PORT 2080#if EV_USE_PORT
1051# include "ev_port.c" 2081# include "ev_port.c"
1052#endif 2082#endif
1053#if EV_USE_KQUEUE 2083#if EV_USE_KQUEUE
1054# include "ev_kqueue.c" 2084# include "ev_kqueue.c"
… …
1061#endif 2091#endif
1062#if EV_USE_SELECT 2092#if EV_USE_SELECT
1063# include "ev_select.c" 2093# include "ev_select.c"
1064#endif 2094#endif
1065 2095
1066int 2096int ecb_cold
1067ev_version_major (void) 2097ev_version_major (void)
1068{ 2098{
1069 return EV_VERSION_MAJOR; 2099 return EV_VERSION_MAJOR;
1070} 2100}
1071 2101
1072int 2102int ecb_cold
1073ev_version_minor (void) 2103ev_version_minor (void)
1074{ 2104{
1075 return EV_VERSION_MINOR; 2105 return EV_VERSION_MINOR;
1076} 2106}
1077 2107
1078/* return true if we are running with elevated privileges and should ignore env variables */ 2108/* return true if we are running with elevated privileges and should ignore env variables */
1079int inline_size 2109int inline_size ecb_cold
1080enable_secure (void) 2110enable_secure (void)
1081{ 2111{
1082#ifdef _WIN32 2112#ifdef _WIN32
1083 return 0; 2113 return 0;
1084#else 2114#else
1085 return getuid () != geteuid () 2115 return getuid () != geteuid ()
1086 || getgid () != getegid (); 2116 || getgid () != getegid ();
1087#endif 2117#endif
1088} 2118}
1089 2119
1090unsigned int 2120unsigned int ecb_cold
1091ev_supported_backends (void) 2121ev_supported_backends (void)
1092{ 2122{
1093 unsigned int flags = 0; 2123 unsigned int flags = 0;
1094 2124
1095 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2125 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1099 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2129 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1100 2130
1101 return flags; 2131 return flags;
1102} 2132}
1103 2133
1104unsigned int 2134unsigned int ecb_cold
1105ev_recommended_backends (void) 2135ev_recommended_backends (void)
1106{ 2136{
1107 unsigned int flags = ev_supported_backends (); 2137 unsigned int flags = ev_supported_backends ();
1108 2138
1109#ifndef __NetBSD__ 2139#ifndef __NetBSD__
1110 /* kqueue is borked on everything but netbsd apparently */ 2140 /* kqueue is borked on everything but netbsd apparently */
1111 /* it usually doesn't work correctly on anything but sockets and pipes */ 2141 /* it usually doesn't work correctly on anything but sockets and pipes */
1112 flags &= ~EVBACKEND_KQUEUE; 2142 flags &= ~EVBACKEND_KQUEUE;
1113#endif 2143#endif
1114#ifdef __APPLE__ 2144#ifdef __APPLE__
1115 // flags &= ~EVBACKEND_KQUEUE; for documentation 2145 /* only select works correctly on that "unix-certified" platform */
1116 flags &= ~EVBACKEND_POLL; 2146 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2147 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2148#endif
2149#ifdef __FreeBSD__
2150 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1117#endif 2151#endif
1118 2152
1119 return flags; 2153 return flags;
1120} 2154}
1121 2155
1122unsigned int 2156unsigned int ecb_cold
1123ev_embeddable_backends (void) 2157ev_embeddable_backends (void)
1124{ 2158{
1125 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2159 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1126 2160
1127 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2161 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1128 /* please fix it and tell me how to detect the fix */ 2162 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1129 flags &= ~EVBACKEND_EPOLL; 2163 flags &= ~EVBACKEND_EPOLL;
1130 2164
1131 return flags; 2165 return flags;
1132} 2166}
1133 2167
1134unsigned int 2168unsigned int
1135ev_backend (EV_P) 2169ev_backend (EV_P)
1136{ 2170{
1137 return backend; 2171 return backend;
1138} 2172}
1139 2173
2174#if EV_FEATURE_API
1140unsigned int 2175unsigned int
1141ev_loop_count (EV_P) 2176ev_iteration (EV_P)
1142{ 2177{
1143 return loop_count; 2178 return loop_count;
2179}
2180
2181unsigned int
2182ev_depth (EV_P)
2183{
2184 return loop_depth;
1144} 2185}
1145 2186
1146void 2187void
1147ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2188ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1148{ 2189{
… …
1153ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2194ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1154{ 2195{
1155 timeout_blocktime = interval; 2196 timeout_blocktime = interval;
1156} 2197}
1157 2198
2199void
2200ev_set_userdata (EV_P_ void *data)
2201{
2202 userdata = data;
2203}
2204
2205void *
2206ev_userdata (EV_P)
2207{
2208 return userdata;
2209}
2210
2211void
2212ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2213{
2214 invoke_cb = invoke_pending_cb;
2215}
2216
2217void
2218ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2219{
2220 release_cb = release;
2221 acquire_cb = acquire;
2222}
2223#endif
2224
2225/* initialise a loop structure, must be zero-initialised */
1158static void noinline 2226static void noinline ecb_cold
1159loop_init (EV_P_ unsigned int flags) 2227loop_init (EV_P_ unsigned int flags)
1160{ 2228{
1161 if (!backend) 2229 if (!backend)
1162 { 2230 {
2231 origflags = flags;
2232
2233#if EV_USE_REALTIME
2234 if (!have_realtime)
2235 {
2236 struct timespec ts;
2237
2238 if (!clock_gettime (CLOCK_REALTIME, &ts))
2239 have_realtime = 1;
2240 }
2241#endif
2242
1163#if EV_USE_MONOTONIC 2243#if EV_USE_MONOTONIC
2244 if (!have_monotonic)
1164 { 2245 {
1165 struct timespec ts; 2246 struct timespec ts;
2247
1166 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2248 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1167 have_monotonic = 1; 2249 have_monotonic = 1;
1168 } 2250 }
1169#endif
1170
1171 ev_rt_now = ev_time ();
1172 mn_now = get_clock ();
1173 now_floor = mn_now;
1174 rtmn_diff = ev_rt_now - mn_now;
1175
1176 io_blocktime = 0.;
1177 timeout_blocktime = 0.;
1178 backend = 0;
1179 backend_fd = -1;
1180 gotasync = 0;
1181#if EV_USE_INOTIFY
1182 fs_fd = -2;
1183#endif 2251#endif
1184 2252
1185 /* pid check not overridable via env */ 2253 /* pid check not overridable via env */
1186#ifndef _WIN32 2254#ifndef _WIN32
1187 if (flags & EVFLAG_FORKCHECK) 2255 if (flags & EVFLAG_FORKCHECK)
… …
1191 if (!(flags & EVFLAG_NOENV) 2259 if (!(flags & EVFLAG_NOENV)
1192 && !enable_secure () 2260 && !enable_secure ()
1193 && getenv ("LIBEV_FLAGS")) 2261 && getenv ("LIBEV_FLAGS"))
1194 flags = atoi (getenv ("LIBEV_FLAGS")); 2262 flags = atoi (getenv ("LIBEV_FLAGS"));
1195 2263
1196 if (!(flags & 0x0000ffffU)) 2264 ev_rt_now = ev_time ();
2265 mn_now = get_clock ();
2266 now_floor = mn_now;
2267 rtmn_diff = ev_rt_now - mn_now;
2268#if EV_FEATURE_API
2269 invoke_cb = ev_invoke_pending;
2270#endif
2271
2272 io_blocktime = 0.;
2273 timeout_blocktime = 0.;
2274 backend = 0;
2275 backend_fd = -1;
2276 sig_pending = 0;
2277#if EV_ASYNC_ENABLE
2278 async_pending = 0;
2279#endif
2280 pipe_write_skipped = 0;
2281 pipe_write_wanted = 0;
2282#if EV_USE_INOTIFY
2283 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2284#endif
2285#if EV_USE_SIGNALFD
2286 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2287#endif
2288
2289 if (!(flags & EVBACKEND_MASK))
1197 flags |= ev_recommended_backends (); 2290 flags |= ev_recommended_backends ();
1198 2291
2292#if EV_USE_IOCP
2293 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2294#endif
1199#if EV_USE_PORT 2295#if EV_USE_PORT
1200 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2296 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1201#endif 2297#endif
1202#if EV_USE_KQUEUE 2298#if EV_USE_KQUEUE
1203 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2299 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1210#endif 2306#endif
1211#if EV_USE_SELECT 2307#if EV_USE_SELECT
1212 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2308 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1213#endif 2309#endif
1214 2310
2311 ev_prepare_init (&pending_w, pendingcb);
2312
2313#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1215 ev_init (&pipeev, pipecb); 2314 ev_init (&pipe_w, pipecb);
1216 ev_set_priority (&pipeev, EV_MAXPRI); 2315 ev_set_priority (&pipe_w, EV_MAXPRI);
2316#endif
1217 } 2317 }
1218} 2318}
1219 2319
1220static void noinline 2320/* free up a loop structure */
2321void ecb_cold
1221loop_destroy (EV_P) 2322ev_loop_destroy (EV_P)
1222{ 2323{
1223 int i; 2324 int i;
1224 2325
2326#if EV_MULTIPLICITY
2327 /* mimic free (0) */
2328 if (!EV_A)
2329 return;
2330#endif
2331
2332#if EV_CLEANUP_ENABLE
2333 /* queue cleanup watchers (and execute them) */
2334 if (expect_false (cleanupcnt))
2335 {
2336 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2337 EV_INVOKE_PENDING;
2338 }
2339#endif
2340
2341#if EV_CHILD_ENABLE
2342 if (ev_is_active (&childev))
2343 {
2344 ev_ref (EV_A); /* child watcher */
2345 ev_signal_stop (EV_A_ &childev);
2346 }
2347#endif
2348
1225 if (ev_is_active (&pipeev)) 2349 if (ev_is_active (&pipe_w))
1226 { 2350 {
1227 ev_ref (EV_A); /* signal watcher */ 2351 /*ev_ref (EV_A);*/
1228 ev_io_stop (EV_A_ &pipeev); 2352 /*ev_io_stop (EV_A_ &pipe_w);*/
1229 2353
1230#if EV_USE_EVENTFD 2354#if EV_USE_EVENTFD
1231 if (evfd >= 0) 2355 if (evfd >= 0)
1232 close (evfd); 2356 close (evfd);
1233#endif 2357#endif
1234 2358
1235 if (evpipe [0] >= 0) 2359 if (evpipe [0] >= 0)
1236 { 2360 {
1237 close (evpipe [0]); 2361 EV_WIN32_CLOSE_FD (evpipe [0]);
1238 close (evpipe [1]); 2362 EV_WIN32_CLOSE_FD (evpipe [1]);
1239 } 2363 }
1240 } 2364 }
2365
2366#if EV_USE_SIGNALFD
2367 if (ev_is_active (&sigfd_w))
2368 close (sigfd);
2369#endif
1241 2370
1242#if EV_USE_INOTIFY 2371#if EV_USE_INOTIFY
1243 if (fs_fd >= 0) 2372 if (fs_fd >= 0)
1244 close (fs_fd); 2373 close (fs_fd);
1245#endif 2374#endif
1246 2375
1247 if (backend_fd >= 0) 2376 if (backend_fd >= 0)
1248 close (backend_fd); 2377 close (backend_fd);
1249 2378
2379#if EV_USE_IOCP
2380 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2381#endif
1250#if EV_USE_PORT 2382#if EV_USE_PORT
1251 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2383 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1252#endif 2384#endif
1253#if EV_USE_KQUEUE 2385#if EV_USE_KQUEUE
1254 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2386 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1269#if EV_IDLE_ENABLE 2401#if EV_IDLE_ENABLE
1270 array_free (idle, [i]); 2402 array_free (idle, [i]);
1271#endif 2403#endif
1272 } 2404 }
1273 2405
1274 ev_free (anfds); anfdmax = 0; 2406 ev_free (anfds); anfds = 0; anfdmax = 0;
1275 2407
1276 /* have to use the microsoft-never-gets-it-right macro */ 2408 /* have to use the microsoft-never-gets-it-right macro */
2409 array_free (rfeed, EMPTY);
1277 array_free (fdchange, EMPTY); 2410 array_free (fdchange, EMPTY);
1278 array_free (timer, EMPTY); 2411 array_free (timer, EMPTY);
1279#if EV_PERIODIC_ENABLE 2412#if EV_PERIODIC_ENABLE
1280 array_free (periodic, EMPTY); 2413 array_free (periodic, EMPTY);
1281#endif 2414#endif
1282#if EV_FORK_ENABLE 2415#if EV_FORK_ENABLE
1283 array_free (fork, EMPTY); 2416 array_free (fork, EMPTY);
1284#endif 2417#endif
2418#if EV_CLEANUP_ENABLE
2419 array_free (cleanup, EMPTY);
2420#endif
1285 array_free (prepare, EMPTY); 2421 array_free (prepare, EMPTY);
1286 array_free (check, EMPTY); 2422 array_free (check, EMPTY);
1287#if EV_ASYNC_ENABLE 2423#if EV_ASYNC_ENABLE
1288 array_free (async, EMPTY); 2424 array_free (async, EMPTY);
1289#endif 2425#endif
1290 2426
1291 backend = 0; 2427 backend = 0;
2428
2429#if EV_MULTIPLICITY
2430 if (ev_is_default_loop (EV_A))
2431#endif
2432 ev_default_loop_ptr = 0;
2433#if EV_MULTIPLICITY
2434 else
2435 ev_free (EV_A);
2436#endif
1292} 2437}
1293 2438
1294#if EV_USE_INOTIFY 2439#if EV_USE_INOTIFY
1295void inline_size infy_fork (EV_P); 2440inline_size void infy_fork (EV_P);
1296#endif 2441#endif
1297 2442
1298void inline_size 2443inline_size void
1299loop_fork (EV_P) 2444loop_fork (EV_P)
1300{ 2445{
1301#if EV_USE_PORT 2446#if EV_USE_PORT
1302 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2447 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1303#endif 2448#endif
… …
1309#endif 2454#endif
1310#if EV_USE_INOTIFY 2455#if EV_USE_INOTIFY
1311 infy_fork (EV_A); 2456 infy_fork (EV_A);
1312#endif 2457#endif
1313 2458
1314 if (ev_is_active (&pipeev)) 2459 if (ev_is_active (&pipe_w))
1315 { 2460 {
1316 /* this "locks" the handlers against writing to the pipe */ 2461 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1317 /* while we modify the fd vars */
1318 gotsig = 1;
1319#if EV_ASYNC_ENABLE
1320 gotasync = 1;
1321#endif
1322 2462
1323 ev_ref (EV_A); 2463 ev_ref (EV_A);
1324 ev_io_stop (EV_A_ &pipeev); 2464 ev_io_stop (EV_A_ &pipe_w);
1325 2465
1326#if EV_USE_EVENTFD 2466#if EV_USE_EVENTFD
1327 if (evfd >= 0) 2467 if (evfd >= 0)
1328 close (evfd); 2468 close (evfd);
1329#endif 2469#endif
1330 2470
1331 if (evpipe [0] >= 0) 2471 if (evpipe [0] >= 0)
1332 { 2472 {
1333 close (evpipe [0]); 2473 EV_WIN32_CLOSE_FD (evpipe [0]);
1334 close (evpipe [1]); 2474 EV_WIN32_CLOSE_FD (evpipe [1]);
1335 } 2475 }
1336 2476
2477#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1337 evpipe_init (EV_A); 2478 evpipe_init (EV_A);
1338 /* now iterate over everything, in case we missed something */ 2479 /* now iterate over everything, in case we missed something */
1339 pipecb (EV_A_ &pipeev, EV_READ); 2480 pipecb (EV_A_ &pipe_w, EV_READ);
2481#endif
1340 } 2482 }
1341 2483
1342 postfork = 0; 2484 postfork = 0;
1343} 2485}
1344 2486
1345#if EV_MULTIPLICITY 2487#if EV_MULTIPLICITY
2488
1346struct ev_loop * 2489struct ev_loop * ecb_cold
1347ev_loop_new (unsigned int flags) 2490ev_loop_new (unsigned int flags)
1348{ 2491{
1349 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2492 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1350 2493
1351 memset (loop, 0, sizeof (struct ev_loop)); 2494 memset (EV_A, 0, sizeof (struct ev_loop));
1352
1353 loop_init (EV_A_ flags); 2495 loop_init (EV_A_ flags);
1354 2496
1355 if (ev_backend (EV_A)) 2497 if (ev_backend (EV_A))
1356 return loop; 2498 return EV_A;
1357 2499
2500 ev_free (EV_A);
1358 return 0; 2501 return 0;
1359} 2502}
1360 2503
1361void 2504#endif /* multiplicity */
1362ev_loop_destroy (EV_P)
1363{
1364 loop_destroy (EV_A);
1365 ev_free (loop);
1366}
1367 2505
1368void 2506#if EV_VERIFY
1369ev_loop_fork (EV_P) 2507static void noinline ecb_cold
2508verify_watcher (EV_P_ W w)
1370{ 2509{
1371 postfork = 1; /* must be in line with ev_default_fork */ 2510 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1372}
1373 2511
2512 if (w->pending)
2513 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2514}
2515
2516static void noinline ecb_cold
2517verify_heap (EV_P_ ANHE *heap, int N)
2518{
2519 int i;
2520
2521 for (i = HEAP0; i < N + HEAP0; ++i)
2522 {
2523 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2524 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2525 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2526
2527 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2528 }
2529}
2530
2531static void noinline ecb_cold
2532array_verify (EV_P_ W *ws, int cnt)
2533{
2534 while (cnt--)
2535 {
2536 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2537 verify_watcher (EV_A_ ws [cnt]);
2538 }
2539}
2540#endif
2541
2542#if EV_FEATURE_API
2543void ecb_cold
2544ev_verify (EV_P)
2545{
2546#if EV_VERIFY
2547 int i;
2548 WL w;
2549
2550 assert (activecnt >= -1);
2551
2552 assert (fdchangemax >= fdchangecnt);
2553 for (i = 0; i < fdchangecnt; ++i)
2554 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2555
2556 assert (anfdmax >= 0);
2557 for (i = 0; i < anfdmax; ++i)
2558 for (w = anfds [i].head; w; w = w->next)
2559 {
2560 verify_watcher (EV_A_ (W)w);
2561 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2562 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2563 }
2564
2565 assert (timermax >= timercnt);
2566 verify_heap (EV_A_ timers, timercnt);
2567
2568#if EV_PERIODIC_ENABLE
2569 assert (periodicmax >= periodiccnt);
2570 verify_heap (EV_A_ periodics, periodiccnt);
2571#endif
2572
2573 for (i = NUMPRI; i--; )
2574 {
2575 assert (pendingmax [i] >= pendingcnt [i]);
2576#if EV_IDLE_ENABLE
2577 assert (idleall >= 0);
2578 assert (idlemax [i] >= idlecnt [i]);
2579 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2580#endif
2581 }
2582
2583#if EV_FORK_ENABLE
2584 assert (forkmax >= forkcnt);
2585 array_verify (EV_A_ (W *)forks, forkcnt);
2586#endif
2587
2588#if EV_CLEANUP_ENABLE
2589 assert (cleanupmax >= cleanupcnt);
2590 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2591#endif
2592
2593#if EV_ASYNC_ENABLE
2594 assert (asyncmax >= asynccnt);
2595 array_verify (EV_A_ (W *)asyncs, asynccnt);
2596#endif
2597
2598#if EV_PREPARE_ENABLE
2599 assert (preparemax >= preparecnt);
2600 array_verify (EV_A_ (W *)prepares, preparecnt);
2601#endif
2602
2603#if EV_CHECK_ENABLE
2604 assert (checkmax >= checkcnt);
2605 array_verify (EV_A_ (W *)checks, checkcnt);
2606#endif
2607
2608# if 0
2609#if EV_CHILD_ENABLE
2610 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2611 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2612#endif
2613# endif
2614#endif
2615}
1374#endif 2616#endif
1375 2617
1376#if EV_MULTIPLICITY 2618#if EV_MULTIPLICITY
1377struct ev_loop * 2619struct ev_loop * ecb_cold
1378ev_default_loop_init (unsigned int flags)
1379#else 2620#else
1380int 2621int
2622#endif
1381ev_default_loop (unsigned int flags) 2623ev_default_loop (unsigned int flags)
1382#endif
1383{ 2624{
1384 if (!ev_default_loop_ptr) 2625 if (!ev_default_loop_ptr)
1385 { 2626 {
1386#if EV_MULTIPLICITY 2627#if EV_MULTIPLICITY
1387 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2628 EV_P = ev_default_loop_ptr = &default_loop_struct;
1388#else 2629#else
1389 ev_default_loop_ptr = 1; 2630 ev_default_loop_ptr = 1;
1390#endif 2631#endif
1391 2632
1392 loop_init (EV_A_ flags); 2633 loop_init (EV_A_ flags);
1393 2634
1394 if (ev_backend (EV_A)) 2635 if (ev_backend (EV_A))
1395 { 2636 {
1396#ifndef _WIN32 2637#if EV_CHILD_ENABLE
1397 ev_signal_init (&childev, childcb, SIGCHLD); 2638 ev_signal_init (&childev, childcb, SIGCHLD);
1398 ev_set_priority (&childev, EV_MAXPRI); 2639 ev_set_priority (&childev, EV_MAXPRI);
1399 ev_signal_start (EV_A_ &childev); 2640 ev_signal_start (EV_A_ &childev);
1400 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2641 ev_unref (EV_A); /* child watcher should not keep loop alive */
1401#endif 2642#endif
… …
1406 2647
1407 return ev_default_loop_ptr; 2648 return ev_default_loop_ptr;
1408} 2649}
1409 2650
1410void 2651void
1411ev_default_destroy (void) 2652ev_loop_fork (EV_P)
1412{ 2653{
1413#if EV_MULTIPLICITY
1414 struct ev_loop *loop = ev_default_loop_ptr;
1415#endif
1416
1417#ifndef _WIN32
1418 ev_ref (EV_A); /* child watcher */
1419 ev_signal_stop (EV_A_ &childev);
1420#endif
1421
1422 loop_destroy (EV_A);
1423}
1424
1425void
1426ev_default_fork (void)
1427{
1428#if EV_MULTIPLICITY
1429 struct ev_loop *loop = ev_default_loop_ptr;
1430#endif
1431
1432 if (backend)
1433 postfork = 1; /* must be in line with ev_loop_fork */ 2654 postfork = 1; /* must be in line with ev_default_fork */
1434} 2655}
1435 2656
1436/*****************************************************************************/ 2657/*****************************************************************************/
1437 2658
1438void 2659void
1439ev_invoke (EV_P_ void *w, int revents) 2660ev_invoke (EV_P_ void *w, int revents)
1440{ 2661{
1441 EV_CB_INVOKE ((W)w, revents); 2662 EV_CB_INVOKE ((W)w, revents);
1442} 2663}
1443 2664
1444void inline_speed 2665unsigned int
1445call_pending (EV_P) 2666ev_pending_count (EV_P)
2667{
2668 int pri;
2669 unsigned int count = 0;
2670
2671 for (pri = NUMPRI; pri--; )
2672 count += pendingcnt [pri];
2673
2674 return count;
2675}
2676
2677void noinline
2678ev_invoke_pending (EV_P)
1446{ 2679{
1447 int pri; 2680 int pri;
1448 2681
1449 for (pri = NUMPRI; pri--; ) 2682 for (pri = NUMPRI; pri--; )
1450 while (pendingcnt [pri]) 2683 while (pendingcnt [pri])
1451 { 2684 {
1452 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2685 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1453 2686
1454 if (expect_true (p->w))
1455 {
1456 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1457
1458 p->w->pending = 0; 2687 p->w->pending = 0;
1459 EV_CB_INVOKE (p->w, p->events); 2688 EV_CB_INVOKE (p->w, p->events);
1460 } 2689 EV_FREQUENT_CHECK;
1461 } 2690 }
1462} 2691}
1463 2692
1464void inline_size
1465timers_reify (EV_P)
1466{
1467 while (timercnt && ev_at (timers [1]) <= mn_now)
1468 {
1469 ev_timer *w = (ev_timer *)timers [1];
1470
1471 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1472
1473 /* first reschedule or stop timer */
1474 if (w->repeat)
1475 {
1476 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1477
1478 ev_at (w) += w->repeat;
1479 if (ev_at (w) < mn_now)
1480 ev_at (w) = mn_now;
1481
1482 downheap (timers, timercnt, 1);
1483 }
1484 else
1485 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1486
1487 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1488 }
1489}
1490
1491#if EV_PERIODIC_ENABLE
1492void inline_size
1493periodics_reify (EV_P)
1494{
1495 while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1496 {
1497 ev_periodic *w = (ev_periodic *)periodics [1];
1498
1499 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1500
1501 /* first reschedule or stop timer */
1502 if (w->reschedule_cb)
1503 {
1504 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1505 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1506 downheap (periodics, periodiccnt, 1);
1507 }
1508 else if (w->interval)
1509 {
1510 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1511 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1512 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1513 downheap (periodics, periodiccnt, 1);
1514 }
1515 else
1516 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1517
1518 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1519 }
1520}
1521
1522static void noinline
1523periodics_reschedule (EV_P)
1524{
1525 int i;
1526
1527 /* adjust periodics after time jump */
1528 for (i = 0; i < periodiccnt; ++i)
1529 {
1530 ev_periodic *w = (ev_periodic *)periodics [i];
1531
1532 if (w->reschedule_cb)
1533 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1534 else if (w->interval)
1535 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1536 }
1537
1538 /* now rebuild the heap */
1539 for (i = periodiccnt >> 1; i--; )
1540 downheap (periodics, periodiccnt, i);
1541}
1542#endif
1543
1544#if EV_IDLE_ENABLE 2693#if EV_IDLE_ENABLE
1545void inline_size 2694/* make idle watchers pending. this handles the "call-idle */
2695/* only when higher priorities are idle" logic */
2696inline_size void
1546idle_reify (EV_P) 2697idle_reify (EV_P)
1547{ 2698{
1548 if (expect_false (idleall)) 2699 if (expect_false (idleall))
1549 { 2700 {
1550 int pri; 2701 int pri;
… …
1562 } 2713 }
1563 } 2714 }
1564} 2715}
1565#endif 2716#endif
1566 2717
1567void inline_speed 2718/* make timers pending */
2719inline_size void
2720timers_reify (EV_P)
2721{
2722 EV_FREQUENT_CHECK;
2723
2724 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2725 {
2726 do
2727 {
2728 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2729
2730 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2731
2732 /* first reschedule or stop timer */
2733 if (w->repeat)
2734 {
2735 ev_at (w) += w->repeat;
2736 if (ev_at (w) < mn_now)
2737 ev_at (w) = mn_now;
2738
2739 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2740
2741 ANHE_at_cache (timers [HEAP0]);
2742 downheap (timers, timercnt, HEAP0);
2743 }
2744 else
2745 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2746
2747 EV_FREQUENT_CHECK;
2748 feed_reverse (EV_A_ (W)w);
2749 }
2750 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2751
2752 feed_reverse_done (EV_A_ EV_TIMER);
2753 }
2754}
2755
2756#if EV_PERIODIC_ENABLE
2757
2758static void noinline
2759periodic_recalc (EV_P_ ev_periodic *w)
2760{
2761 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2762 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2763
2764 /* the above almost always errs on the low side */
2765 while (at <= ev_rt_now)
2766 {
2767 ev_tstamp nat = at + w->interval;
2768
2769 /* when resolution fails us, we use ev_rt_now */
2770 if (expect_false (nat == at))
2771 {
2772 at = ev_rt_now;
2773 break;
2774 }
2775
2776 at = nat;
2777 }
2778
2779 ev_at (w) = at;
2780}
2781
2782/* make periodics pending */
2783inline_size void
2784periodics_reify (EV_P)
2785{
2786 EV_FREQUENT_CHECK;
2787
2788 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2789 {
2790 int feed_count = 0;
2791
2792 do
2793 {
2794 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2795
2796 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2797
2798 /* first reschedule or stop timer */
2799 if (w->reschedule_cb)
2800 {
2801 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2802
2803 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2804
2805 ANHE_at_cache (periodics [HEAP0]);
2806 downheap (periodics, periodiccnt, HEAP0);
2807 }
2808 else if (w->interval)
2809 {
2810 periodic_recalc (EV_A_ w);
2811 ANHE_at_cache (periodics [HEAP0]);
2812 downheap (periodics, periodiccnt, HEAP0);
2813 }
2814 else
2815 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2816
2817 EV_FREQUENT_CHECK;
2818 feed_reverse (EV_A_ (W)w);
2819 }
2820 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2821
2822 feed_reverse_done (EV_A_ EV_PERIODIC);
2823 }
2824}
2825
2826/* simply recalculate all periodics */
2827/* TODO: maybe ensure that at least one event happens when jumping forward? */
2828static void noinline ecb_cold
2829periodics_reschedule (EV_P)
2830{
2831 int i;
2832
2833 /* adjust periodics after time jump */
2834 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2835 {
2836 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2837
2838 if (w->reschedule_cb)
2839 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2840 else if (w->interval)
2841 periodic_recalc (EV_A_ w);
2842
2843 ANHE_at_cache (periodics [i]);
2844 }
2845
2846 reheap (periodics, periodiccnt);
2847}
2848#endif
2849
2850/* adjust all timers by a given offset */
2851static void noinline ecb_cold
2852timers_reschedule (EV_P_ ev_tstamp adjust)
2853{
2854 int i;
2855
2856 for (i = 0; i < timercnt; ++i)
2857 {
2858 ANHE *he = timers + i + HEAP0;
2859 ANHE_w (*he)->at += adjust;
2860 ANHE_at_cache (*he);
2861 }
2862}
2863
2864/* fetch new monotonic and realtime times from the kernel */
2865/* also detect if there was a timejump, and act accordingly */
2866inline_speed void
1568time_update (EV_P_ ev_tstamp max_block) 2867time_update (EV_P_ ev_tstamp max_block)
1569{ 2868{
1570 int i;
1571
1572#if EV_USE_MONOTONIC 2869#if EV_USE_MONOTONIC
1573 if (expect_true (have_monotonic)) 2870 if (expect_true (have_monotonic))
1574 { 2871 {
2872 int i;
1575 ev_tstamp odiff = rtmn_diff; 2873 ev_tstamp odiff = rtmn_diff;
1576 2874
1577 mn_now = get_clock (); 2875 mn_now = get_clock ();
1578 2876
1579 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2877 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1595 * doesn't hurt either as we only do this on time-jumps or 2893 * doesn't hurt either as we only do this on time-jumps or
1596 * in the unlikely event of having been preempted here. 2894 * in the unlikely event of having been preempted here.
1597 */ 2895 */
1598 for (i = 4; --i; ) 2896 for (i = 4; --i; )
1599 { 2897 {
2898 ev_tstamp diff;
1600 rtmn_diff = ev_rt_now - mn_now; 2899 rtmn_diff = ev_rt_now - mn_now;
1601 2900
1602 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2901 diff = odiff - rtmn_diff;
2902
2903 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1603 return; /* all is well */ 2904 return; /* all is well */
1604 2905
1605 ev_rt_now = ev_time (); 2906 ev_rt_now = ev_time ();
1606 mn_now = get_clock (); 2907 mn_now = get_clock ();
1607 now_floor = mn_now; 2908 now_floor = mn_now;
1608 } 2909 }
1609 2910
2911 /* no timer adjustment, as the monotonic clock doesn't jump */
2912 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1610# if EV_PERIODIC_ENABLE 2913# if EV_PERIODIC_ENABLE
1611 periodics_reschedule (EV_A); 2914 periodics_reschedule (EV_A);
1612# endif 2915# endif
1613 /* no timer adjustment, as the monotonic clock doesn't jump */
1614 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1615 } 2916 }
1616 else 2917 else
1617#endif 2918#endif
1618 { 2919 {
1619 ev_rt_now = ev_time (); 2920 ev_rt_now = ev_time ();
1620 2921
1621 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2922 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1622 { 2923 {
2924 /* adjust timers. this is easy, as the offset is the same for all of them */
2925 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1623#if EV_PERIODIC_ENABLE 2926#if EV_PERIODIC_ENABLE
1624 periodics_reschedule (EV_A); 2927 periodics_reschedule (EV_A);
1625#endif 2928#endif
1626 /* adjust timers. this is easy, as the offset is the same for all of them */
1627 for (i = 1; i <= timercnt; ++i)
1628 ev_at (timers [i]) += ev_rt_now - mn_now;
1629 } 2929 }
1630 2930
1631 mn_now = ev_rt_now; 2931 mn_now = ev_rt_now;
1632 } 2932 }
1633} 2933}
1634 2934
1635void 2935void
1636ev_ref (EV_P)
1637{
1638 ++activecnt;
1639}
1640
1641void
1642ev_unref (EV_P)
1643{
1644 --activecnt;
1645}
1646
1647static int loop_done;
1648
1649void
1650ev_loop (EV_P_ int flags) 2936ev_run (EV_P_ int flags)
1651{ 2937{
2938#if EV_FEATURE_API
2939 ++loop_depth;
2940#endif
2941
2942 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2943
1652 loop_done = EVUNLOOP_CANCEL; 2944 loop_done = EVBREAK_CANCEL;
1653 2945
1654 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2946 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1655 2947
1656 do 2948 do
1657 { 2949 {
2950#if EV_VERIFY >= 2
2951 ev_verify (EV_A);
2952#endif
2953
1658#ifndef _WIN32 2954#ifndef _WIN32
1659 if (expect_false (curpid)) /* penalise the forking check even more */ 2955 if (expect_false (curpid)) /* penalise the forking check even more */
1660 if (expect_false (getpid () != curpid)) 2956 if (expect_false (getpid () != curpid))
1661 { 2957 {
1662 curpid = getpid (); 2958 curpid = getpid ();
… …
1668 /* we might have forked, so queue fork handlers */ 2964 /* we might have forked, so queue fork handlers */
1669 if (expect_false (postfork)) 2965 if (expect_false (postfork))
1670 if (forkcnt) 2966 if (forkcnt)
1671 { 2967 {
1672 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2968 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1673 call_pending (EV_A); 2969 EV_INVOKE_PENDING;
1674 } 2970 }
1675#endif 2971#endif
1676 2972
2973#if EV_PREPARE_ENABLE
1677 /* queue prepare watchers (and execute them) */ 2974 /* queue prepare watchers (and execute them) */
1678 if (expect_false (preparecnt)) 2975 if (expect_false (preparecnt))
1679 { 2976 {
1680 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2977 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1681 call_pending (EV_A); 2978 EV_INVOKE_PENDING;
1682 } 2979 }
2980#endif
1683 2981
1684 if (expect_false (!activecnt)) 2982 if (expect_false (loop_done))
1685 break; 2983 break;
1686 2984
1687 /* we might have forked, so reify kernel state if necessary */ 2985 /* we might have forked, so reify kernel state if necessary */
1688 if (expect_false (postfork)) 2986 if (expect_false (postfork))
1689 loop_fork (EV_A); 2987 loop_fork (EV_A);
… …
1694 /* calculate blocking time */ 2992 /* calculate blocking time */
1695 { 2993 {
1696 ev_tstamp waittime = 0.; 2994 ev_tstamp waittime = 0.;
1697 ev_tstamp sleeptime = 0.; 2995 ev_tstamp sleeptime = 0.;
1698 2996
2997 /* remember old timestamp for io_blocktime calculation */
2998 ev_tstamp prev_mn_now = mn_now;
2999
3000 /* update time to cancel out callback processing overhead */
3001 time_update (EV_A_ 1e100);
3002
3003 /* from now on, we want a pipe-wake-up */
3004 pipe_write_wanted = 1;
3005
3006 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3007
1699 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3008 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1700 { 3009 {
1701 /* update time to cancel out callback processing overhead */
1702 time_update (EV_A_ 1e100);
1703
1704 waittime = MAX_BLOCKTIME; 3010 waittime = MAX_BLOCKTIME;
1705 3011
1706 if (timercnt) 3012 if (timercnt)
1707 { 3013 {
1708 ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge; 3014 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1709 if (waittime > to) waittime = to; 3015 if (waittime > to) waittime = to;
1710 } 3016 }
1711 3017
1712#if EV_PERIODIC_ENABLE 3018#if EV_PERIODIC_ENABLE
1713 if (periodiccnt) 3019 if (periodiccnt)
1714 { 3020 {
1715 ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge; 3021 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1716 if (waittime > to) waittime = to; 3022 if (waittime > to) waittime = to;
1717 } 3023 }
1718#endif 3024#endif
1719 3025
3026 /* don't let timeouts decrease the waittime below timeout_blocktime */
1720 if (expect_false (waittime < timeout_blocktime)) 3027 if (expect_false (waittime < timeout_blocktime))
1721 waittime = timeout_blocktime; 3028 waittime = timeout_blocktime;
1722 3029
1723 sleeptime = waittime - backend_fudge; 3030 /* at this point, we NEED to wait, so we have to ensure */
3031 /* to pass a minimum nonzero value to the backend */
3032 if (expect_false (waittime < backend_mintime))
3033 waittime = backend_mintime;
1724 3034
3035 /* extra check because io_blocktime is commonly 0 */
1725 if (expect_true (sleeptime > io_blocktime)) 3036 if (expect_false (io_blocktime))
1726 sleeptime = io_blocktime;
1727
1728 if (sleeptime)
1729 { 3037 {
3038 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3039
3040 if (sleeptime > waittime - backend_mintime)
3041 sleeptime = waittime - backend_mintime;
3042
3043 if (expect_true (sleeptime > 0.))
3044 {
1730 ev_sleep (sleeptime); 3045 ev_sleep (sleeptime);
1731 waittime -= sleeptime; 3046 waittime -= sleeptime;
3047 }
1732 } 3048 }
1733 } 3049 }
1734 3050
3051#if EV_FEATURE_API
1735 ++loop_count; 3052 ++loop_count;
3053#endif
3054 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1736 backend_poll (EV_A_ waittime); 3055 backend_poll (EV_A_ waittime);
3056 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3057
3058 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3059
3060 if (pipe_write_skipped)
3061 {
3062 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3063 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3064 }
3065
1737 3066
1738 /* update ev_rt_now, do magic */ 3067 /* update ev_rt_now, do magic */
1739 time_update (EV_A_ waittime + sleeptime); 3068 time_update (EV_A_ waittime + sleeptime);
1740 } 3069 }
1741 3070
… …
1748#if EV_IDLE_ENABLE 3077#if EV_IDLE_ENABLE
1749 /* queue idle watchers unless other events are pending */ 3078 /* queue idle watchers unless other events are pending */
1750 idle_reify (EV_A); 3079 idle_reify (EV_A);
1751#endif 3080#endif
1752 3081
3082#if EV_CHECK_ENABLE
1753 /* queue check watchers, to be executed first */ 3083 /* queue check watchers, to be executed first */
1754 if (expect_false (checkcnt)) 3084 if (expect_false (checkcnt))
1755 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3085 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3086#endif
1756 3087
1757 call_pending (EV_A); 3088 EV_INVOKE_PENDING;
1758 } 3089 }
1759 while (expect_true ( 3090 while (expect_true (
1760 activecnt 3091 activecnt
1761 && !loop_done 3092 && !loop_done
1762 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3093 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1763 )); 3094 ));
1764 3095
1765 if (loop_done == EVUNLOOP_ONE) 3096 if (loop_done == EVBREAK_ONE)
1766 loop_done = EVUNLOOP_CANCEL; 3097 loop_done = EVBREAK_CANCEL;
3098
3099#if EV_FEATURE_API
3100 --loop_depth;
3101#endif
1767} 3102}
1768 3103
1769void 3104void
1770ev_unloop (EV_P_ int how) 3105ev_break (EV_P_ int how)
1771{ 3106{
1772 loop_done = how; 3107 loop_done = how;
1773} 3108}
1774 3109
3110void
3111ev_ref (EV_P)
3112{
3113 ++activecnt;
3114}
3115
3116void
3117ev_unref (EV_P)
3118{
3119 --activecnt;
3120}
3121
3122void
3123ev_now_update (EV_P)
3124{
3125 time_update (EV_A_ 1e100);
3126}
3127
3128void
3129ev_suspend (EV_P)
3130{
3131 ev_now_update (EV_A);
3132}
3133
3134void
3135ev_resume (EV_P)
3136{
3137 ev_tstamp mn_prev = mn_now;
3138
3139 ev_now_update (EV_A);
3140 timers_reschedule (EV_A_ mn_now - mn_prev);
3141#if EV_PERIODIC_ENABLE
3142 /* TODO: really do this? */
3143 periodics_reschedule (EV_A);
3144#endif
3145}
3146
1775/*****************************************************************************/ 3147/*****************************************************************************/
3148/* singly-linked list management, used when the expected list length is short */
1776 3149
1777void inline_size 3150inline_size void
1778wlist_add (WL *head, WL elem) 3151wlist_add (WL *head, WL elem)
1779{ 3152{
1780 elem->next = *head; 3153 elem->next = *head;
1781 *head = elem; 3154 *head = elem;
1782} 3155}
1783 3156
1784void inline_size 3157inline_size void
1785wlist_del (WL *head, WL elem) 3158wlist_del (WL *head, WL elem)
1786{ 3159{
1787 while (*head) 3160 while (*head)
1788 { 3161 {
1789 if (*head == elem) 3162 if (expect_true (*head == elem))
1790 { 3163 {
1791 *head = elem->next; 3164 *head = elem->next;
1792 return; 3165 break;
1793 } 3166 }
1794 3167
1795 head = &(*head)->next; 3168 head = &(*head)->next;
1796 } 3169 }
1797} 3170}
1798 3171
1799void inline_speed 3172/* internal, faster, version of ev_clear_pending */
3173inline_speed void
1800clear_pending (EV_P_ W w) 3174clear_pending (EV_P_ W w)
1801{ 3175{
1802 if (w->pending) 3176 if (w->pending)
1803 { 3177 {
1804 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3178 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1805 w->pending = 0; 3179 w->pending = 0;
1806 } 3180 }
1807} 3181}
1808 3182
1809int 3183int
… …
1813 int pending = w_->pending; 3187 int pending = w_->pending;
1814 3188
1815 if (expect_true (pending)) 3189 if (expect_true (pending))
1816 { 3190 {
1817 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3191 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3192 p->w = (W)&pending_w;
1818 w_->pending = 0; 3193 w_->pending = 0;
1819 p->w = 0;
1820 return p->events; 3194 return p->events;
1821 } 3195 }
1822 else 3196 else
1823 return 0; 3197 return 0;
1824} 3198}
1825 3199
1826void inline_size 3200inline_size void
1827pri_adjust (EV_P_ W w) 3201pri_adjust (EV_P_ W w)
1828{ 3202{
1829 int pri = w->priority; 3203 int pri = ev_priority (w);
1830 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3204 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1831 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3205 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1832 w->priority = pri; 3206 ev_set_priority (w, pri);
1833} 3207}
1834 3208
1835void inline_speed 3209inline_speed void
1836ev_start (EV_P_ W w, int active) 3210ev_start (EV_P_ W w, int active)
1837{ 3211{
1838 pri_adjust (EV_A_ w); 3212 pri_adjust (EV_A_ w);
1839 w->active = active; 3213 w->active = active;
1840 ev_ref (EV_A); 3214 ev_ref (EV_A);
1841} 3215}
1842 3216
1843void inline_size 3217inline_size void
1844ev_stop (EV_P_ W w) 3218ev_stop (EV_P_ W w)
1845{ 3219{
1846 ev_unref (EV_A); 3220 ev_unref (EV_A);
1847 w->active = 0; 3221 w->active = 0;
1848} 3222}
… …
1855 int fd = w->fd; 3229 int fd = w->fd;
1856 3230
1857 if (expect_false (ev_is_active (w))) 3231 if (expect_false (ev_is_active (w)))
1858 return; 3232 return;
1859 3233
1860 assert (("ev_io_start called with negative fd", fd >= 0)); 3234 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3235 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3236
3237 EV_FREQUENT_CHECK;
1861 3238
1862 ev_start (EV_A_ (W)w, 1); 3239 ev_start (EV_A_ (W)w, 1);
1863 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3240 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1864 wlist_add (&anfds[fd].head, (WL)w); 3241 wlist_add (&anfds[fd].head, (WL)w);
1865 3242
1866 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3243 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1867 w->events &= ~EV_IOFDSET; 3244 w->events &= ~EV__IOFDSET;
3245
3246 EV_FREQUENT_CHECK;
1868} 3247}
1869 3248
1870void noinline 3249void noinline
1871ev_io_stop (EV_P_ ev_io *w) 3250ev_io_stop (EV_P_ ev_io *w)
1872{ 3251{
1873 clear_pending (EV_A_ (W)w); 3252 clear_pending (EV_A_ (W)w);
1874 if (expect_false (!ev_is_active (w))) 3253 if (expect_false (!ev_is_active (w)))
1875 return; 3254 return;
1876 3255
1877 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3256 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3257
3258 EV_FREQUENT_CHECK;
1878 3259
1879 wlist_del (&anfds[w->fd].head, (WL)w); 3260 wlist_del (&anfds[w->fd].head, (WL)w);
1880 ev_stop (EV_A_ (W)w); 3261 ev_stop (EV_A_ (W)w);
1881 3262
1882 fd_change (EV_A_ w->fd, 1); 3263 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3264
3265 EV_FREQUENT_CHECK;
1883} 3266}
1884 3267
1885void noinline 3268void noinline
1886ev_timer_start (EV_P_ ev_timer *w) 3269ev_timer_start (EV_P_ ev_timer *w)
1887{ 3270{
1888 if (expect_false (ev_is_active (w))) 3271 if (expect_false (ev_is_active (w)))
1889 return; 3272 return;
1890 3273
1891 ev_at (w) += mn_now; 3274 ev_at (w) += mn_now;
1892 3275
1893 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3276 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1894 3277
3278 EV_FREQUENT_CHECK;
3279
3280 ++timercnt;
1895 ev_start (EV_A_ (W)w, ++timercnt); 3281 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1896 array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2); 3282 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1897 timers [timercnt] = (WT)w; 3283 ANHE_w (timers [ev_active (w)]) = (WT)w;
3284 ANHE_at_cache (timers [ev_active (w)]);
1898 upheap (timers, timercnt); 3285 upheap (timers, ev_active (w));
1899 3286
3287 EV_FREQUENT_CHECK;
3288
1900 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ 3289 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1901} 3290}
1902 3291
1903void noinline 3292void noinline
1904ev_timer_stop (EV_P_ ev_timer *w) 3293ev_timer_stop (EV_P_ ev_timer *w)
1905{ 3294{
1906 clear_pending (EV_A_ (W)w); 3295 clear_pending (EV_A_ (W)w);
1907 if (expect_false (!ev_is_active (w))) 3296 if (expect_false (!ev_is_active (w)))
1908 return; 3297 return;
1909 3298
3299 EV_FREQUENT_CHECK;
3300
1910 { 3301 {
1911 int active = ev_active (w); 3302 int active = ev_active (w);
1912 3303
1913 assert (("internal timer heap corruption", timers [active] == (WT)w)); 3304 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1914 3305
3306 --timercnt;
3307
1915 if (expect_true (active < timercnt)) 3308 if (expect_true (active < timercnt + HEAP0))
1916 { 3309 {
1917 timers [active] = timers [timercnt]; 3310 timers [active] = timers [timercnt + HEAP0];
1918 adjustheap (timers, timercnt, active); 3311 adjustheap (timers, timercnt, active);
1919 } 3312 }
1920
1921 --timercnt;
1922 } 3313 }
1923 3314
1924 ev_at (w) -= mn_now; 3315 ev_at (w) -= mn_now;
1925 3316
1926 ev_stop (EV_A_ (W)w); 3317 ev_stop (EV_A_ (W)w);
3318
3319 EV_FREQUENT_CHECK;
1927} 3320}
1928 3321
1929void noinline 3322void noinline
1930ev_timer_again (EV_P_ ev_timer *w) 3323ev_timer_again (EV_P_ ev_timer *w)
1931{ 3324{
3325 EV_FREQUENT_CHECK;
3326
3327 clear_pending (EV_A_ (W)w);
3328
1932 if (ev_is_active (w)) 3329 if (ev_is_active (w))
1933 { 3330 {
1934 if (w->repeat) 3331 if (w->repeat)
1935 { 3332 {
1936 ev_at (w) = mn_now + w->repeat; 3333 ev_at (w) = mn_now + w->repeat;
3334 ANHE_at_cache (timers [ev_active (w)]);
1937 adjustheap (timers, timercnt, ev_active (w)); 3335 adjustheap (timers, timercnt, ev_active (w));
1938 } 3336 }
1939 else 3337 else
1940 ev_timer_stop (EV_A_ w); 3338 ev_timer_stop (EV_A_ w);
1941 } 3339 }
1942 else if (w->repeat) 3340 else if (w->repeat)
1943 { 3341 {
1944 ev_at (w) = w->repeat; 3342 ev_at (w) = w->repeat;
1945 ev_timer_start (EV_A_ w); 3343 ev_timer_start (EV_A_ w);
1946 } 3344 }
3345
3346 EV_FREQUENT_CHECK;
3347}
3348
3349ev_tstamp
3350ev_timer_remaining (EV_P_ ev_timer *w)
3351{
3352 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1947} 3353}
1948 3354
1949#if EV_PERIODIC_ENABLE 3355#if EV_PERIODIC_ENABLE
1950void noinline 3356void noinline
1951ev_periodic_start (EV_P_ ev_periodic *w) 3357ev_periodic_start (EV_P_ ev_periodic *w)
… …
1955 3361
1956 if (w->reschedule_cb) 3362 if (w->reschedule_cb)
1957 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3363 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1958 else if (w->interval) 3364 else if (w->interval)
1959 { 3365 {
1960 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3366 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1961 /* this formula differs from the one in periodic_reify because we do not always round up */ 3367 periodic_recalc (EV_A_ w);
1962 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1963 } 3368 }
1964 else 3369 else
1965 ev_at (w) = w->offset; 3370 ev_at (w) = w->offset;
1966 3371
3372 EV_FREQUENT_CHECK;
3373
3374 ++periodiccnt;
1967 ev_start (EV_A_ (W)w, ++periodiccnt); 3375 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1968 array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2); 3376 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1969 periodics [periodiccnt] = (WT)w; 3377 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1970 upheap (periodics, periodiccnt); 3378 ANHE_at_cache (periodics [ev_active (w)]);
3379 upheap (periodics, ev_active (w));
1971 3380
3381 EV_FREQUENT_CHECK;
3382
1972 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ 3383 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1973} 3384}
1974 3385
1975void noinline 3386void noinline
1976ev_periodic_stop (EV_P_ ev_periodic *w) 3387ev_periodic_stop (EV_P_ ev_periodic *w)
1977{ 3388{
1978 clear_pending (EV_A_ (W)w); 3389 clear_pending (EV_A_ (W)w);
1979 if (expect_false (!ev_is_active (w))) 3390 if (expect_false (!ev_is_active (w)))
1980 return; 3391 return;
1981 3392
3393 EV_FREQUENT_CHECK;
3394
1982 { 3395 {
1983 int active = ev_active (w); 3396 int active = ev_active (w);
1984 3397
1985 assert (("internal periodic heap corruption", periodics [active] == (WT)w)); 3398 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1986 3399
3400 --periodiccnt;
3401
1987 if (expect_true (active < periodiccnt)) 3402 if (expect_true (active < periodiccnt + HEAP0))
1988 { 3403 {
1989 periodics [active] = periodics [periodiccnt]; 3404 periodics [active] = periodics [periodiccnt + HEAP0];
1990 adjustheap (periodics, periodiccnt, active); 3405 adjustheap (periodics, periodiccnt, active);
1991 } 3406 }
1992
1993 --periodiccnt;
1994 } 3407 }
1995 3408
1996 ev_stop (EV_A_ (W)w); 3409 ev_stop (EV_A_ (W)w);
3410
3411 EV_FREQUENT_CHECK;
1997} 3412}
1998 3413
1999void noinline 3414void noinline
2000ev_periodic_again (EV_P_ ev_periodic *w) 3415ev_periodic_again (EV_P_ ev_periodic *w)
2001{ 3416{
… …
2007 3422
2008#ifndef SA_RESTART 3423#ifndef SA_RESTART
2009# define SA_RESTART 0 3424# define SA_RESTART 0
2010#endif 3425#endif
2011 3426
3427#if EV_SIGNAL_ENABLE
3428
2012void noinline 3429void noinline
2013ev_signal_start (EV_P_ ev_signal *w) 3430ev_signal_start (EV_P_ ev_signal *w)
2014{ 3431{
2015#if EV_MULTIPLICITY
2016 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2017#endif
2018 if (expect_false (ev_is_active (w))) 3432 if (expect_false (ev_is_active (w)))
2019 return; 3433 return;
2020 3434
2021 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3435 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2022 3436
2023 evpipe_init (EV_A); 3437#if EV_MULTIPLICITY
3438 assert (("libev: a signal must not be attached to two different loops",
3439 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2024 3440
3441 signals [w->signum - 1].loop = EV_A;
3442#endif
3443
3444 EV_FREQUENT_CHECK;
3445
3446#if EV_USE_SIGNALFD
3447 if (sigfd == -2)
2025 { 3448 {
2026#ifndef _WIN32 3449 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2027 sigset_t full, prev; 3450 if (sigfd < 0 && errno == EINVAL)
2028 sigfillset (&full); 3451 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2029 sigprocmask (SIG_SETMASK, &full, &prev);
2030#endif
2031 3452
2032 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3453 if (sigfd >= 0)
3454 {
3455 fd_intern (sigfd); /* doing it twice will not hurt */
2033 3456
2034#ifndef _WIN32 3457 sigemptyset (&sigfd_set);
2035 sigprocmask (SIG_SETMASK, &prev, 0); 3458
2036#endif 3459 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3460 ev_set_priority (&sigfd_w, EV_MAXPRI);
3461 ev_io_start (EV_A_ &sigfd_w);
3462 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3463 }
2037 } 3464 }
3465
3466 if (sigfd >= 0)
3467 {
3468 /* TODO: check .head */
3469 sigaddset (&sigfd_set, w->signum);
3470 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3471
3472 signalfd (sigfd, &sigfd_set, 0);
3473 }
3474#endif
2038 3475
2039 ev_start (EV_A_ (W)w, 1); 3476 ev_start (EV_A_ (W)w, 1);
2040 wlist_add (&signals [w->signum - 1].head, (WL)w); 3477 wlist_add (&signals [w->signum - 1].head, (WL)w);
2041 3478
2042 if (!((WL)w)->next) 3479 if (!((WL)w)->next)
3480# if EV_USE_SIGNALFD
3481 if (sigfd < 0) /*TODO*/
3482# endif
2043 { 3483 {
2044#if _WIN32 3484# ifdef _WIN32
3485 evpipe_init (EV_A);
3486
2045 signal (w->signum, ev_sighandler); 3487 signal (w->signum, ev_sighandler);
2046#else 3488# else
2047 struct sigaction sa; 3489 struct sigaction sa;
3490
3491 evpipe_init (EV_A);
3492
2048 sa.sa_handler = ev_sighandler; 3493 sa.sa_handler = ev_sighandler;
2049 sigfillset (&sa.sa_mask); 3494 sigfillset (&sa.sa_mask);
2050 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3495 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2051 sigaction (w->signum, &sa, 0); 3496 sigaction (w->signum, &sa, 0);
3497
3498 if (origflags & EVFLAG_NOSIGMASK)
3499 {
3500 sigemptyset (&sa.sa_mask);
3501 sigaddset (&sa.sa_mask, w->signum);
3502 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3503 }
2052#endif 3504#endif
2053 } 3505 }
3506
3507 EV_FREQUENT_CHECK;
2054} 3508}
2055 3509
2056void noinline 3510void noinline
2057ev_signal_stop (EV_P_ ev_signal *w) 3511ev_signal_stop (EV_P_ ev_signal *w)
2058{ 3512{
2059 clear_pending (EV_A_ (W)w); 3513 clear_pending (EV_A_ (W)w);
2060 if (expect_false (!ev_is_active (w))) 3514 if (expect_false (!ev_is_active (w)))
2061 return; 3515 return;
2062 3516
3517 EV_FREQUENT_CHECK;
3518
2063 wlist_del (&signals [w->signum - 1].head, (WL)w); 3519 wlist_del (&signals [w->signum - 1].head, (WL)w);
2064 ev_stop (EV_A_ (W)w); 3520 ev_stop (EV_A_ (W)w);
2065 3521
2066 if (!signals [w->signum - 1].head) 3522 if (!signals [w->signum - 1].head)
3523 {
3524#if EV_MULTIPLICITY
3525 signals [w->signum - 1].loop = 0; /* unattach from signal */
3526#endif
3527#if EV_USE_SIGNALFD
3528 if (sigfd >= 0)
3529 {
3530 sigset_t ss;
3531
3532 sigemptyset (&ss);
3533 sigaddset (&ss, w->signum);
3534 sigdelset (&sigfd_set, w->signum);
3535
3536 signalfd (sigfd, &sigfd_set, 0);
3537 sigprocmask (SIG_UNBLOCK, &ss, 0);
3538 }
3539 else
3540#endif
2067 signal (w->signum, SIG_DFL); 3541 signal (w->signum, SIG_DFL);
3542 }
3543
3544 EV_FREQUENT_CHECK;
2068} 3545}
3546
3547#endif
3548
3549#if EV_CHILD_ENABLE
2069 3550
2070void 3551void
2071ev_child_start (EV_P_ ev_child *w) 3552ev_child_start (EV_P_ ev_child *w)
2072{ 3553{
2073#if EV_MULTIPLICITY 3554#if EV_MULTIPLICITY
2074 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3555 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2075#endif 3556#endif
2076 if (expect_false (ev_is_active (w))) 3557 if (expect_false (ev_is_active (w)))
2077 return; 3558 return;
2078 3559
3560 EV_FREQUENT_CHECK;
3561
2079 ev_start (EV_A_ (W)w, 1); 3562 ev_start (EV_A_ (W)w, 1);
2080 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3563 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
3564
3565 EV_FREQUENT_CHECK;
2081} 3566}
2082 3567
2083void 3568void
2084ev_child_stop (EV_P_ ev_child *w) 3569ev_child_stop (EV_P_ ev_child *w)
2085{ 3570{
2086 clear_pending (EV_A_ (W)w); 3571 clear_pending (EV_A_ (W)w);
2087 if (expect_false (!ev_is_active (w))) 3572 if (expect_false (!ev_is_active (w)))
2088 return; 3573 return;
2089 3574
3575 EV_FREQUENT_CHECK;
3576
2090 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3577 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2091 ev_stop (EV_A_ (W)w); 3578 ev_stop (EV_A_ (W)w);
3579
3580 EV_FREQUENT_CHECK;
2092} 3581}
3582
3583#endif
2093 3584
2094#if EV_STAT_ENABLE 3585#if EV_STAT_ENABLE
2095 3586
2096# ifdef _WIN32 3587# ifdef _WIN32
2097# undef lstat 3588# undef lstat
2098# define lstat(a,b) _stati64 (a,b) 3589# define lstat(a,b) _stati64 (a,b)
2099# endif 3590# endif
2100 3591
2101#define DEF_STAT_INTERVAL 5.0074891 3592#define DEF_STAT_INTERVAL 5.0074891
3593#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2102#define MIN_STAT_INTERVAL 0.1074891 3594#define MIN_STAT_INTERVAL 0.1074891
2103 3595
2104static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3596static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2105 3597
2106#if EV_USE_INOTIFY 3598#if EV_USE_INOTIFY
2107# define EV_INOTIFY_BUFSIZE 8192 3599
3600/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3601# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2108 3602
2109static void noinline 3603static void noinline
2110infy_add (EV_P_ ev_stat *w) 3604infy_add (EV_P_ ev_stat *w)
2111{ 3605{
2112 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); 3606 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);
2113 3607
2114 if (w->wd < 0) 3608 if (w->wd >= 0)
3609 {
3610 struct statfs sfs;
3611
3612 /* now local changes will be tracked by inotify, but remote changes won't */
3613 /* unless the filesystem is known to be local, we therefore still poll */
3614 /* also do poll on <2.6.25, but with normal frequency */
3615
3616 if (!fs_2625)
3617 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3618 else if (!statfs (w->path, &sfs)
3619 && (sfs.f_type == 0x1373 /* devfs */
3620 || sfs.f_type == 0xEF53 /* ext2/3 */
3621 || sfs.f_type == 0x3153464a /* jfs */
3622 || sfs.f_type == 0x52654973 /* reiser3 */
3623 || sfs.f_type == 0x01021994 /* tempfs */
3624 || sfs.f_type == 0x58465342 /* xfs */))
3625 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3626 else
3627 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2115 { 3628 }
2116 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3629 else
3630 {
3631 /* can't use inotify, continue to stat */
3632 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2117 3633
2118 /* monitor some parent directory for speedup hints */ 3634 /* if path is not there, monitor some parent directory for speedup hints */
3635 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3636 /* but an efficiency issue only */
2119 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3637 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2120 { 3638 {
2121 char path [4096]; 3639 char path [4096];
2122 strcpy (path, w->path); 3640 strcpy (path, w->path);
2123 3641
… …
2126 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3644 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2127 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3645 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2128 3646
2129 char *pend = strrchr (path, '/'); 3647 char *pend = strrchr (path, '/');
2130 3648
2131 if (!pend) 3649 if (!pend || pend == path)
2132 break; /* whoops, no '/', complain to your admin */ 3650 break;
2133 3651
2134 *pend = 0; 3652 *pend = 0;
2135 w->wd = inotify_add_watch (fs_fd, path, mask); 3653 w->wd = inotify_add_watch (fs_fd, path, mask);
2136 } 3654 }
2137 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3655 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2138 } 3656 }
2139 } 3657 }
2140 else
2141 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2142 3658
2143 if (w->wd >= 0) 3659 if (w->wd >= 0)
2144 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3660 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3661
3662 /* now re-arm timer, if required */
3663 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3664 ev_timer_again (EV_A_ &w->timer);
3665 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2145} 3666}
2146 3667
2147static void noinline 3668static void noinline
2148infy_del (EV_P_ ev_stat *w) 3669infy_del (EV_P_ ev_stat *w)
2149{ 3670{
… …
2152 3673
2153 if (wd < 0) 3674 if (wd < 0)
2154 return; 3675 return;
2155 3676
2156 w->wd = -2; 3677 w->wd = -2;
2157 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3678 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2158 wlist_del (&fs_hash [slot].head, (WL)w); 3679 wlist_del (&fs_hash [slot].head, (WL)w);
2159 3680
2160 /* remove this watcher, if others are watching it, they will rearm */ 3681 /* remove this watcher, if others are watching it, they will rearm */
2161 inotify_rm_watch (fs_fd, wd); 3682 inotify_rm_watch (fs_fd, wd);
2162} 3683}
2163 3684
2164static void noinline 3685static void noinline
2165infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2166{ 3687{
2167 if (slot < 0) 3688 if (slot < 0)
2168 /* overflow, need to check for all hahs slots */ 3689 /* overflow, need to check for all hash slots */
2169 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2170 infy_wd (EV_A_ slot, wd, ev); 3691 infy_wd (EV_A_ slot, wd, ev);
2171 else 3692 else
2172 { 3693 {
2173 WL w_; 3694 WL w_;
2174 3695
2175 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3696 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2176 { 3697 {
2177 ev_stat *w = (ev_stat *)w_; 3698 ev_stat *w = (ev_stat *)w_;
2178 w_ = w_->next; /* lets us remove this watcher and all before it */ 3699 w_ = w_->next; /* lets us remove this watcher and all before it */
2179 3700
2180 if (w->wd == wd || wd == -1) 3701 if (w->wd == wd || wd == -1)
2181 { 3702 {
2182 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3703 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2183 { 3704 {
3705 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2184 w->wd = -1; 3706 w->wd = -1;
2185 infy_add (EV_A_ w); /* re-add, no matter what */ 3707 infy_add (EV_A_ w); /* re-add, no matter what */
2186 } 3708 }
2187 3709
2188 stat_timer_cb (EV_A_ &w->timer, 0); 3710 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2193 3715
2194static void 3716static void
2195infy_cb (EV_P_ ev_io *w, int revents) 3717infy_cb (EV_P_ ev_io *w, int revents)
2196{ 3718{
2197 char buf [EV_INOTIFY_BUFSIZE]; 3719 char buf [EV_INOTIFY_BUFSIZE];
2198 struct inotify_event *ev = (struct inotify_event *)buf;
2199 int ofs; 3720 int ofs;
2200 int len = read (fs_fd, buf, sizeof (buf)); 3721 int len = read (fs_fd, buf, sizeof (buf));
2201 3722
2202 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3723 for (ofs = 0; ofs < len; )
3724 {
3725 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2203 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3726 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3727 ofs += sizeof (struct inotify_event) + ev->len;
3728 }
2204} 3729}
2205 3730
2206void inline_size 3731inline_size void ecb_cold
3732ev_check_2625 (EV_P)
3733{
3734 /* kernels < 2.6.25 are borked
3735 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3736 */
3737 if (ev_linux_version () < 0x020619)
3738 return;
3739
3740 fs_2625 = 1;
3741}
3742
3743inline_size int
3744infy_newfd (void)
3745{
3746#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3747 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3748 if (fd >= 0)
3749 return fd;
3750#endif
3751 return inotify_init ();
3752}
3753
3754inline_size void
2207infy_init (EV_P) 3755infy_init (EV_P)
2208{ 3756{
2209 if (fs_fd != -2) 3757 if (fs_fd != -2)
2210 return; 3758 return;
2211 3759
3760 fs_fd = -1;
3761
3762 ev_check_2625 (EV_A);
3763
2212 fs_fd = inotify_init (); 3764 fs_fd = infy_newfd ();
2213 3765
2214 if (fs_fd >= 0) 3766 if (fs_fd >= 0)
2215 { 3767 {
3768 fd_intern (fs_fd);
2216 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3769 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2217 ev_set_priority (&fs_w, EV_MAXPRI); 3770 ev_set_priority (&fs_w, EV_MAXPRI);
2218 ev_io_start (EV_A_ &fs_w); 3771 ev_io_start (EV_A_ &fs_w);
3772 ev_unref (EV_A);
2219 } 3773 }
2220} 3774}
2221 3775
2222void inline_size 3776inline_size void
2223infy_fork (EV_P) 3777infy_fork (EV_P)
2224{ 3778{
2225 int slot; 3779 int slot;
2226 3780
2227 if (fs_fd < 0) 3781 if (fs_fd < 0)
2228 return; 3782 return;
2229 3783
3784 ev_ref (EV_A);
3785 ev_io_stop (EV_A_ &fs_w);
2230 close (fs_fd); 3786 close (fs_fd);
2231 fs_fd = inotify_init (); 3787 fs_fd = infy_newfd ();
2232 3788
3789 if (fs_fd >= 0)
3790 {
3791 fd_intern (fs_fd);
3792 ev_io_set (&fs_w, fs_fd, EV_READ);
3793 ev_io_start (EV_A_ &fs_w);
3794 ev_unref (EV_A);
3795 }
3796
2233 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3797 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2234 { 3798 {
2235 WL w_ = fs_hash [slot].head; 3799 WL w_ = fs_hash [slot].head;
2236 fs_hash [slot].head = 0; 3800 fs_hash [slot].head = 0;
2237 3801
2238 while (w_) 3802 while (w_)
… …
2243 w->wd = -1; 3807 w->wd = -1;
2244 3808
2245 if (fs_fd >= 0) 3809 if (fs_fd >= 0)
2246 infy_add (EV_A_ w); /* re-add, no matter what */ 3810 infy_add (EV_A_ w); /* re-add, no matter what */
2247 else 3811 else
3812 {
3813 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3814 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2248 ev_timer_start (EV_A_ &w->timer); 3815 ev_timer_again (EV_A_ &w->timer);
3816 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3817 }
2249 } 3818 }
2250
2251 } 3819 }
2252} 3820}
2253 3821
3822#endif
3823
3824#ifdef _WIN32
3825# define EV_LSTAT(p,b) _stati64 (p, b)
3826#else
3827# define EV_LSTAT(p,b) lstat (p, b)
2254#endif 3828#endif
2255 3829
2256void 3830void
2257ev_stat_stat (EV_P_ ev_stat *w) 3831ev_stat_stat (EV_P_ ev_stat *w)
2258{ 3832{
… …
2265static void noinline 3839static void noinline
2266stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3840stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2267{ 3841{
2268 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3842 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2269 3843
2270 /* we copy this here each the time so that */ 3844 ev_statdata prev = w->attr;
2271 /* prev has the old value when the callback gets invoked */
2272 w->prev = w->attr;
2273 ev_stat_stat (EV_A_ w); 3845 ev_stat_stat (EV_A_ w);
2274 3846
2275 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3847 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2276 if ( 3848 if (
2277 w->prev.st_dev != w->attr.st_dev 3849 prev.st_dev != w->attr.st_dev
2278 || w->prev.st_ino != w->attr.st_ino 3850 || prev.st_ino != w->attr.st_ino
2279 || w->prev.st_mode != w->attr.st_mode 3851 || prev.st_mode != w->attr.st_mode
2280 || w->prev.st_nlink != w->attr.st_nlink 3852 || prev.st_nlink != w->attr.st_nlink
2281 || w->prev.st_uid != w->attr.st_uid 3853 || prev.st_uid != w->attr.st_uid
2282 || w->prev.st_gid != w->attr.st_gid 3854 || prev.st_gid != w->attr.st_gid
2283 || w->prev.st_rdev != w->attr.st_rdev 3855 || prev.st_rdev != w->attr.st_rdev
2284 || w->prev.st_size != w->attr.st_size 3856 || prev.st_size != w->attr.st_size
2285 || w->prev.st_atime != w->attr.st_atime 3857 || prev.st_atime != w->attr.st_atime
2286 || w->prev.st_mtime != w->attr.st_mtime 3858 || prev.st_mtime != w->attr.st_mtime
2287 || w->prev.st_ctime != w->attr.st_ctime 3859 || prev.st_ctime != w->attr.st_ctime
2288 ) { 3860 ) {
3861 /* we only update w->prev on actual differences */
3862 /* in case we test more often than invoke the callback, */
3863 /* to ensure that prev is always different to attr */
3864 w->prev = prev;
3865
2289 #if EV_USE_INOTIFY 3866 #if EV_USE_INOTIFY
3867 if (fs_fd >= 0)
3868 {
2290 infy_del (EV_A_ w); 3869 infy_del (EV_A_ w);
2291 infy_add (EV_A_ w); 3870 infy_add (EV_A_ w);
2292 ev_stat_stat (EV_A_ w); /* avoid race... */ 3871 ev_stat_stat (EV_A_ w); /* avoid race... */
3872 }
2293 #endif 3873 #endif
2294 3874
2295 ev_feed_event (EV_A_ w, EV_STAT); 3875 ev_feed_event (EV_A_ w, EV_STAT);
2296 } 3876 }
2297} 3877}
… …
2300ev_stat_start (EV_P_ ev_stat *w) 3880ev_stat_start (EV_P_ ev_stat *w)
2301{ 3881{
2302 if (expect_false (ev_is_active (w))) 3882 if (expect_false (ev_is_active (w)))
2303 return; 3883 return;
2304 3884
2305 /* since we use memcmp, we need to clear any padding data etc. */
2306 memset (&w->prev, 0, sizeof (ev_statdata));
2307 memset (&w->attr, 0, sizeof (ev_statdata));
2308
2309 ev_stat_stat (EV_A_ w); 3885 ev_stat_stat (EV_A_ w);
2310 3886
3887 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2311 if (w->interval < MIN_STAT_INTERVAL) 3888 w->interval = MIN_STAT_INTERVAL;
2312 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2313 3889
2314 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3890 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2315 ev_set_priority (&w->timer, ev_priority (w)); 3891 ev_set_priority (&w->timer, ev_priority (w));
2316 3892
2317#if EV_USE_INOTIFY 3893#if EV_USE_INOTIFY
2318 infy_init (EV_A); 3894 infy_init (EV_A);
2319 3895
2320 if (fs_fd >= 0) 3896 if (fs_fd >= 0)
2321 infy_add (EV_A_ w); 3897 infy_add (EV_A_ w);
2322 else 3898 else
2323#endif 3899#endif
3900 {
2324 ev_timer_start (EV_A_ &w->timer); 3901 ev_timer_again (EV_A_ &w->timer);
3902 ev_unref (EV_A);
3903 }
2325 3904
2326 ev_start (EV_A_ (W)w, 1); 3905 ev_start (EV_A_ (W)w, 1);
3906
3907 EV_FREQUENT_CHECK;
2327} 3908}
2328 3909
2329void 3910void
2330ev_stat_stop (EV_P_ ev_stat *w) 3911ev_stat_stop (EV_P_ ev_stat *w)
2331{ 3912{
2332 clear_pending (EV_A_ (W)w); 3913 clear_pending (EV_A_ (W)w);
2333 if (expect_false (!ev_is_active (w))) 3914 if (expect_false (!ev_is_active (w)))
2334 return; 3915 return;
2335 3916
3917 EV_FREQUENT_CHECK;
3918
2336#if EV_USE_INOTIFY 3919#if EV_USE_INOTIFY
2337 infy_del (EV_A_ w); 3920 infy_del (EV_A_ w);
2338#endif 3921#endif
3922
3923 if (ev_is_active (&w->timer))
3924 {
3925 ev_ref (EV_A);
2339 ev_timer_stop (EV_A_ &w->timer); 3926 ev_timer_stop (EV_A_ &w->timer);
3927 }
2340 3928
2341 ev_stop (EV_A_ (W)w); 3929 ev_stop (EV_A_ (W)w);
3930
3931 EV_FREQUENT_CHECK;
2342} 3932}
2343#endif 3933#endif
2344 3934
2345#if EV_IDLE_ENABLE 3935#if EV_IDLE_ENABLE
2346void 3936void
… …
2349 if (expect_false (ev_is_active (w))) 3939 if (expect_false (ev_is_active (w)))
2350 return; 3940 return;
2351 3941
2352 pri_adjust (EV_A_ (W)w); 3942 pri_adjust (EV_A_ (W)w);
2353 3943
3944 EV_FREQUENT_CHECK;
3945
2354 { 3946 {
2355 int active = ++idlecnt [ABSPRI (w)]; 3947 int active = ++idlecnt [ABSPRI (w)];
2356 3948
2357 ++idleall; 3949 ++idleall;
2358 ev_start (EV_A_ (W)w, active); 3950 ev_start (EV_A_ (W)w, active);
2359 3951
2360 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3952 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2361 idles [ABSPRI (w)][active - 1] = w; 3953 idles [ABSPRI (w)][active - 1] = w;
2362 } 3954 }
3955
3956 EV_FREQUENT_CHECK;
2363} 3957}
2364 3958
2365void 3959void
2366ev_idle_stop (EV_P_ ev_idle *w) 3960ev_idle_stop (EV_P_ ev_idle *w)
2367{ 3961{
2368 clear_pending (EV_A_ (W)w); 3962 clear_pending (EV_A_ (W)w);
2369 if (expect_false (!ev_is_active (w))) 3963 if (expect_false (!ev_is_active (w)))
2370 return; 3964 return;
2371 3965
3966 EV_FREQUENT_CHECK;
3967
2372 { 3968 {
2373 int active = ev_active (w); 3969 int active = ev_active (w);
2374 3970
2375 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3971 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2376 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3972 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2377 3973
2378 ev_stop (EV_A_ (W)w); 3974 ev_stop (EV_A_ (W)w);
2379 --idleall; 3975 --idleall;
2380 } 3976 }
2381}
2382#endif
2383 3977
3978 EV_FREQUENT_CHECK;
3979}
3980#endif
3981
3982#if EV_PREPARE_ENABLE
2384void 3983void
2385ev_prepare_start (EV_P_ ev_prepare *w) 3984ev_prepare_start (EV_P_ ev_prepare *w)
2386{ 3985{
2387 if (expect_false (ev_is_active (w))) 3986 if (expect_false (ev_is_active (w)))
2388 return; 3987 return;
3988
3989 EV_FREQUENT_CHECK;
2389 3990
2390 ev_start (EV_A_ (W)w, ++preparecnt); 3991 ev_start (EV_A_ (W)w, ++preparecnt);
2391 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3992 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2392 prepares [preparecnt - 1] = w; 3993 prepares [preparecnt - 1] = w;
3994
3995 EV_FREQUENT_CHECK;
2393} 3996}
2394 3997
2395void 3998void
2396ev_prepare_stop (EV_P_ ev_prepare *w) 3999ev_prepare_stop (EV_P_ ev_prepare *w)
2397{ 4000{
2398 clear_pending (EV_A_ (W)w); 4001 clear_pending (EV_A_ (W)w);
2399 if (expect_false (!ev_is_active (w))) 4002 if (expect_false (!ev_is_active (w)))
2400 return; 4003 return;
2401 4004
4005 EV_FREQUENT_CHECK;
4006
2402 { 4007 {
2403 int active = ev_active (w); 4008 int active = ev_active (w);
2404 4009
2405 prepares [active - 1] = prepares [--preparecnt]; 4010 prepares [active - 1] = prepares [--preparecnt];
2406 ev_active (prepares [active - 1]) = active; 4011 ev_active (prepares [active - 1]) = active;
2407 } 4012 }
2408 4013
2409 ev_stop (EV_A_ (W)w); 4014 ev_stop (EV_A_ (W)w);
2410}
2411 4015
4016 EV_FREQUENT_CHECK;
4017}
4018#endif
4019
4020#if EV_CHECK_ENABLE
2412void 4021void
2413ev_check_start (EV_P_ ev_check *w) 4022ev_check_start (EV_P_ ev_check *w)
2414{ 4023{
2415 if (expect_false (ev_is_active (w))) 4024 if (expect_false (ev_is_active (w)))
2416 return; 4025 return;
4026
4027 EV_FREQUENT_CHECK;
2417 4028
2418 ev_start (EV_A_ (W)w, ++checkcnt); 4029 ev_start (EV_A_ (W)w, ++checkcnt);
2419 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4030 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2420 checks [checkcnt - 1] = w; 4031 checks [checkcnt - 1] = w;
4032
4033 EV_FREQUENT_CHECK;
2421} 4034}
2422 4035
2423void 4036void
2424ev_check_stop (EV_P_ ev_check *w) 4037ev_check_stop (EV_P_ ev_check *w)
2425{ 4038{
2426 clear_pending (EV_A_ (W)w); 4039 clear_pending (EV_A_ (W)w);
2427 if (expect_false (!ev_is_active (w))) 4040 if (expect_false (!ev_is_active (w)))
2428 return; 4041 return;
2429 4042
4043 EV_FREQUENT_CHECK;
4044
2430 { 4045 {
2431 int active = ev_active (w); 4046 int active = ev_active (w);
2432 4047
2433 checks [active - 1] = checks [--checkcnt]; 4048 checks [active - 1] = checks [--checkcnt];
2434 ev_active (checks [active - 1]) = active; 4049 ev_active (checks [active - 1]) = active;
2435 } 4050 }
2436 4051
2437 ev_stop (EV_A_ (W)w); 4052 ev_stop (EV_A_ (W)w);
4053
4054 EV_FREQUENT_CHECK;
2438} 4055}
4056#endif
2439 4057
2440#if EV_EMBED_ENABLE 4058#if EV_EMBED_ENABLE
2441void noinline 4059void noinline
2442ev_embed_sweep (EV_P_ ev_embed *w) 4060ev_embed_sweep (EV_P_ ev_embed *w)
2443{ 4061{
2444 ev_loop (w->other, EVLOOP_NONBLOCK); 4062 ev_run (w->other, EVRUN_NOWAIT);
2445} 4063}
2446 4064
2447static void 4065static void
2448embed_io_cb (EV_P_ ev_io *io, int revents) 4066embed_io_cb (EV_P_ ev_io *io, int revents)
2449{ 4067{
2450 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4068 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2451 4069
2452 if (ev_cb (w)) 4070 if (ev_cb (w))
2453 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4071 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2454 else 4072 else
2455 ev_loop (w->other, EVLOOP_NONBLOCK); 4073 ev_run (w->other, EVRUN_NOWAIT);
2456} 4074}
2457 4075
2458static void 4076static void
2459embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4077embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2460{ 4078{
2461 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4079 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2462 4080
2463 { 4081 {
2464 struct ev_loop *loop = w->other; 4082 EV_P = w->other;
2465 4083
2466 while (fdchangecnt) 4084 while (fdchangecnt)
2467 { 4085 {
2468 fd_reify (EV_A); 4086 fd_reify (EV_A);
2469 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4087 ev_run (EV_A_ EVRUN_NOWAIT);
2470 } 4088 }
2471 } 4089 }
4090}
4091
4092static void
4093embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4094{
4095 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4096
4097 ev_embed_stop (EV_A_ w);
4098
4099 {
4100 EV_P = w->other;
4101
4102 ev_loop_fork (EV_A);
4103 ev_run (EV_A_ EVRUN_NOWAIT);
4104 }
4105
4106 ev_embed_start (EV_A_ w);
2472} 4107}
2473 4108
2474#if 0 4109#if 0
2475static void 4110static void
2476embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4111embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2484{ 4119{
2485 if (expect_false (ev_is_active (w))) 4120 if (expect_false (ev_is_active (w)))
2486 return; 4121 return;
2487 4122
2488 { 4123 {
2489 struct ev_loop *loop = w->other; 4124 EV_P = w->other;
2490 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4125 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2491 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4126 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2492 } 4127 }
4128
4129 EV_FREQUENT_CHECK;
2493 4130
2494 ev_set_priority (&w->io, ev_priority (w)); 4131 ev_set_priority (&w->io, ev_priority (w));
2495 ev_io_start (EV_A_ &w->io); 4132 ev_io_start (EV_A_ &w->io);
2496 4133
2497 ev_prepare_init (&w->prepare, embed_prepare_cb); 4134 ev_prepare_init (&w->prepare, embed_prepare_cb);
2498 ev_set_priority (&w->prepare, EV_MINPRI); 4135 ev_set_priority (&w->prepare, EV_MINPRI);
2499 ev_prepare_start (EV_A_ &w->prepare); 4136 ev_prepare_start (EV_A_ &w->prepare);
2500 4137
4138 ev_fork_init (&w->fork, embed_fork_cb);
4139 ev_fork_start (EV_A_ &w->fork);
4140
2501 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 4141 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2502 4142
2503 ev_start (EV_A_ (W)w, 1); 4143 ev_start (EV_A_ (W)w, 1);
4144
4145 EV_FREQUENT_CHECK;
2504} 4146}
2505 4147
2506void 4148void
2507ev_embed_stop (EV_P_ ev_embed *w) 4149ev_embed_stop (EV_P_ ev_embed *w)
2508{ 4150{
2509 clear_pending (EV_A_ (W)w); 4151 clear_pending (EV_A_ (W)w);
2510 if (expect_false (!ev_is_active (w))) 4152 if (expect_false (!ev_is_active (w)))
2511 return; 4153 return;
2512 4154
4155 EV_FREQUENT_CHECK;
4156
2513 ev_io_stop (EV_A_ &w->io); 4157 ev_io_stop (EV_A_ &w->io);
2514 ev_prepare_stop (EV_A_ &w->prepare); 4158 ev_prepare_stop (EV_A_ &w->prepare);
4159 ev_fork_stop (EV_A_ &w->fork);
2515 4160
2516 ev_stop (EV_A_ (W)w); 4161 ev_stop (EV_A_ (W)w);
4162
4163 EV_FREQUENT_CHECK;
2517} 4164}
2518#endif 4165#endif
2519 4166
2520#if EV_FORK_ENABLE 4167#if EV_FORK_ENABLE
2521void 4168void
2522ev_fork_start (EV_P_ ev_fork *w) 4169ev_fork_start (EV_P_ ev_fork *w)
2523{ 4170{
2524 if (expect_false (ev_is_active (w))) 4171 if (expect_false (ev_is_active (w)))
2525 return; 4172 return;
2526 4173
4174 EV_FREQUENT_CHECK;
4175
2527 ev_start (EV_A_ (W)w, ++forkcnt); 4176 ev_start (EV_A_ (W)w, ++forkcnt);
2528 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4177 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2529 forks [forkcnt - 1] = w; 4178 forks [forkcnt - 1] = w;
4179
4180 EV_FREQUENT_CHECK;
2530} 4181}
2531 4182
2532void 4183void
2533ev_fork_stop (EV_P_ ev_fork *w) 4184ev_fork_stop (EV_P_ ev_fork *w)
2534{ 4185{
2535 clear_pending (EV_A_ (W)w); 4186 clear_pending (EV_A_ (W)w);
2536 if (expect_false (!ev_is_active (w))) 4187 if (expect_false (!ev_is_active (w)))
2537 return; 4188 return;
2538 4189
4190 EV_FREQUENT_CHECK;
4191
2539 { 4192 {
2540 int active = ev_active (w); 4193 int active = ev_active (w);
2541 4194
2542 forks [active - 1] = forks [--forkcnt]; 4195 forks [active - 1] = forks [--forkcnt];
2543 ev_active (forks [active - 1]) = active; 4196 ev_active (forks [active - 1]) = active;
2544 } 4197 }
2545 4198
2546 ev_stop (EV_A_ (W)w); 4199 ev_stop (EV_A_ (W)w);
4200
4201 EV_FREQUENT_CHECK;
4202}
4203#endif
4204
4205#if EV_CLEANUP_ENABLE
4206void
4207ev_cleanup_start (EV_P_ ev_cleanup *w)
4208{
4209 if (expect_false (ev_is_active (w)))
4210 return;
4211
4212 EV_FREQUENT_CHECK;
4213
4214 ev_start (EV_A_ (W)w, ++cleanupcnt);
4215 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4216 cleanups [cleanupcnt - 1] = w;
4217
4218 /* cleanup watchers should never keep a refcount on the loop */
4219 ev_unref (EV_A);
4220 EV_FREQUENT_CHECK;
4221}
4222
4223void
4224ev_cleanup_stop (EV_P_ ev_cleanup *w)
4225{
4226 clear_pending (EV_A_ (W)w);
4227 if (expect_false (!ev_is_active (w)))
4228 return;
4229
4230 EV_FREQUENT_CHECK;
4231 ev_ref (EV_A);
4232
4233 {
4234 int active = ev_active (w);
4235
4236 cleanups [active - 1] = cleanups [--cleanupcnt];
4237 ev_active (cleanups [active - 1]) = active;
4238 }
4239
4240 ev_stop (EV_A_ (W)w);
4241
4242 EV_FREQUENT_CHECK;
2547} 4243}
2548#endif 4244#endif
2549 4245
2550#if EV_ASYNC_ENABLE 4246#if EV_ASYNC_ENABLE
2551void 4247void
2552ev_async_start (EV_P_ ev_async *w) 4248ev_async_start (EV_P_ ev_async *w)
2553{ 4249{
2554 if (expect_false (ev_is_active (w))) 4250 if (expect_false (ev_is_active (w)))
2555 return; 4251 return;
2556 4252
4253 w->sent = 0;
4254
2557 evpipe_init (EV_A); 4255 evpipe_init (EV_A);
4256
4257 EV_FREQUENT_CHECK;
2558 4258
2559 ev_start (EV_A_ (W)w, ++asynccnt); 4259 ev_start (EV_A_ (W)w, ++asynccnt);
2560 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4260 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2561 asyncs [asynccnt - 1] = w; 4261 asyncs [asynccnt - 1] = w;
4262
4263 EV_FREQUENT_CHECK;
2562} 4264}
2563 4265
2564void 4266void
2565ev_async_stop (EV_P_ ev_async *w) 4267ev_async_stop (EV_P_ ev_async *w)
2566{ 4268{
2567 clear_pending (EV_A_ (W)w); 4269 clear_pending (EV_A_ (W)w);
2568 if (expect_false (!ev_is_active (w))) 4270 if (expect_false (!ev_is_active (w)))
2569 return; 4271 return;
2570 4272
4273 EV_FREQUENT_CHECK;
4274
2571 { 4275 {
2572 int active = ev_active (w); 4276 int active = ev_active (w);
2573 4277
2574 asyncs [active - 1] = asyncs [--asynccnt]; 4278 asyncs [active - 1] = asyncs [--asynccnt];
2575 ev_active (asyncs [active - 1]) = active; 4279 ev_active (asyncs [active - 1]) = active;
2576 } 4280 }
2577 4281
2578 ev_stop (EV_A_ (W)w); 4282 ev_stop (EV_A_ (W)w);
4283
4284 EV_FREQUENT_CHECK;
2579} 4285}
2580 4286
2581void 4287void
2582ev_async_send (EV_P_ ev_async *w) 4288ev_async_send (EV_P_ ev_async *w)
2583{ 4289{
2584 w->sent = 1; 4290 w->sent = 1;
2585 evpipe_write (EV_A_ &gotasync); 4291 evpipe_write (EV_A_ &async_pending);
2586} 4292}
2587#endif 4293#endif
2588 4294
2589/*****************************************************************************/ 4295/*****************************************************************************/
2590 4296
… …
2600once_cb (EV_P_ struct ev_once *once, int revents) 4306once_cb (EV_P_ struct ev_once *once, int revents)
2601{ 4307{
2602 void (*cb)(int revents, void *arg) = once->cb; 4308 void (*cb)(int revents, void *arg) = once->cb;
2603 void *arg = once->arg; 4309 void *arg = once->arg;
2604 4310
2605 ev_io_stop (EV_A_ &once->io); 4311 ev_io_stop (EV_A_ &once->io);
2606 ev_timer_stop (EV_A_ &once->to); 4312 ev_timer_stop (EV_A_ &once->to);
2607 ev_free (once); 4313 ev_free (once);
2608 4314
2609 cb (revents, arg); 4315 cb (revents, arg);
2610} 4316}
2611 4317
2612static void 4318static void
2613once_cb_io (EV_P_ ev_io *w, int revents) 4319once_cb_io (EV_P_ ev_io *w, int revents)
2614{ 4320{
2615 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 4321 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
4322
4323 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2616} 4324}
2617 4325
2618static void 4326static void
2619once_cb_to (EV_P_ ev_timer *w, int revents) 4327once_cb_to (EV_P_ ev_timer *w, int revents)
2620{ 4328{
2621 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 4329 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
4330
4331 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2622} 4332}
2623 4333
2624void 4334void
2625ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4335ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2626{ 4336{
2627 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4337 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2628 4338
2629 if (expect_false (!once)) 4339 if (expect_false (!once))
2630 { 4340 {
2631 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4341 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2632 return; 4342 return;
2633 } 4343 }
2634 4344
2635 once->cb = cb; 4345 once->cb = cb;
2636 once->arg = arg; 4346 once->arg = arg;
… …
2648 ev_timer_set (&once->to, timeout, 0.); 4358 ev_timer_set (&once->to, timeout, 0.);
2649 ev_timer_start (EV_A_ &once->to); 4359 ev_timer_start (EV_A_ &once->to);
2650 } 4360 }
2651} 4361}
2652 4362
4363/*****************************************************************************/
4364
4365#if EV_WALK_ENABLE
4366void ecb_cold
4367ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
4368{
4369 int i, j;
4370 ev_watcher_list *wl, *wn;
4371
4372 if (types & (EV_IO | EV_EMBED))
4373 for (i = 0; i < anfdmax; ++i)
4374 for (wl = anfds [i].head; wl; )
4375 {
4376 wn = wl->next;
4377
4378#if EV_EMBED_ENABLE
4379 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4380 {
4381 if (types & EV_EMBED)
4382 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4383 }
4384 else
4385#endif
4386#if EV_USE_INOTIFY
4387 if (ev_cb ((ev_io *)wl) == infy_cb)
4388 ;
4389 else
4390#endif
4391 if ((ev_io *)wl != &pipe_w)
4392 if (types & EV_IO)
4393 cb (EV_A_ EV_IO, wl);
4394
4395 wl = wn;
4396 }
4397
4398 if (types & (EV_TIMER | EV_STAT))
4399 for (i = timercnt + HEAP0; i-- > HEAP0; )
4400#if EV_STAT_ENABLE
4401 /*TODO: timer is not always active*/
4402 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4403 {
4404 if (types & EV_STAT)
4405 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4406 }
4407 else
4408#endif
4409 if (types & EV_TIMER)
4410 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4411
4412#if EV_PERIODIC_ENABLE
4413 if (types & EV_PERIODIC)
4414 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4415 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4416#endif
4417
4418#if EV_IDLE_ENABLE
4419 if (types & EV_IDLE)
4420 for (j = NUMPRI; j--; )
4421 for (i = idlecnt [j]; i--; )
4422 cb (EV_A_ EV_IDLE, idles [j][i]);
4423#endif
4424
4425#if EV_FORK_ENABLE
4426 if (types & EV_FORK)
4427 for (i = forkcnt; i--; )
4428 if (ev_cb (forks [i]) != embed_fork_cb)
4429 cb (EV_A_ EV_FORK, forks [i]);
4430#endif
4431
4432#if EV_ASYNC_ENABLE
4433 if (types & EV_ASYNC)
4434 for (i = asynccnt; i--; )
4435 cb (EV_A_ EV_ASYNC, asyncs [i]);
4436#endif
4437
4438#if EV_PREPARE_ENABLE
4439 if (types & EV_PREPARE)
4440 for (i = preparecnt; i--; )
4441# if EV_EMBED_ENABLE
4442 if (ev_cb (prepares [i]) != embed_prepare_cb)
4443# endif
4444 cb (EV_A_ EV_PREPARE, prepares [i]);
4445#endif
4446
4447#if EV_CHECK_ENABLE
4448 if (types & EV_CHECK)
4449 for (i = checkcnt; i--; )
4450 cb (EV_A_ EV_CHECK, checks [i]);
4451#endif
4452
4453#if EV_SIGNAL_ENABLE
4454 if (types & EV_SIGNAL)
4455 for (i = 0; i < EV_NSIG - 1; ++i)
4456 for (wl = signals [i].head; wl; )
4457 {
4458 wn = wl->next;
4459 cb (EV_A_ EV_SIGNAL, wl);
4460 wl = wn;
4461 }
4462#endif
4463
4464#if EV_CHILD_ENABLE
4465 if (types & EV_CHILD)
4466 for (i = (EV_PID_HASHSIZE); i--; )
4467 for (wl = childs [i]; wl; )
4468 {
4469 wn = wl->next;
4470 cb (EV_A_ EV_CHILD, wl);
4471 wl = wn;
4472 }
4473#endif
4474/* EV_STAT 0x00001000 /* stat data changed */
4475/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4476}
4477#endif
4478
2653#if EV_MULTIPLICITY 4479#if EV_MULTIPLICITY
2654 #include "ev_wrap.h" 4480 #include "ev_wrap.h"
2655#endif 4481#endif
2656 4482
2657#ifdef __cplusplus
2658}
2659#endif
2660

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