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Comparing libev/ev.c (file contents):
Revision 1.243 by root, Fri May 9 15:52:13 2008 UTC vs.
Revision 1.430 by root, Wed May 9 16:50:23 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
111# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
114# endif 136# endif
115 137
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
122# endif 145# endif
123 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
130# endif 154# endif
131 155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
132#endif 163# endif
164
165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
152#endif 197#endif
153 198
154#ifndef _WIN32 199#ifndef _WIN32
155# include <sys/time.h> 200# include <sys/time.h>
156# include <sys/wait.h> 201# include <sys/wait.h>
157# include <unistd.h> 202# include <unistd.h>
158#else 203#else
204# include <io.h>
159# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 206# include <windows.h>
207# include <winsock2.h>
161# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
163# endif 210# endif
211# undef EV_AVOID_STDIO
164#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
165 221
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
167 223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# error "unable to find value for NSIG, please report"
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
256#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else
260# define EV_USE_CLOCK_SYSCALL 0
261# endif
262#endif
263
168#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
266# define EV_USE_MONOTONIC EV_FEATURE_OS
267# else
169# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
269# endif
170#endif 270#endif
171 271
172#ifndef EV_USE_REALTIME 272#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 274#endif
175 275
176#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
277# if _POSIX_C_SOURCE >= 199309L
278# define EV_USE_NANOSLEEP EV_FEATURE_OS
279# else
177# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
281# endif
178#endif 282#endif
179 283
180#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 286#endif
183 287
184#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
185# ifdef _WIN32 289# ifdef _WIN32
186# define EV_USE_POLL 0 290# define EV_USE_POLL 0
187# else 291# else
188# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 293# endif
190#endif 294#endif
191 295
192#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 299# else
196# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
197# endif 301# endif
198#endif 302#endif
199 303
… …
205# define EV_USE_PORT 0 309# define EV_USE_PORT 0
206#endif 310#endif
207 311
208#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 315# else
212# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
213# endif 317# endif
214#endif 318#endif
215 319
216#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 321# 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 322#endif
223 323
224#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 325# 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 326#endif
231 327
232#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 331# else
236# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
237# endif 333# endif
238#endif 334#endif
239 335
336#ifndef EV_USE_SIGNALFD
337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
338# define EV_USE_SIGNALFD EV_FEATURE_OS
339# else
340# define EV_USE_SIGNALFD 0
341# endif
342#endif
343
344#if 0 /* debugging */
345# define EV_VERIFY 3
346# define EV_USE_4HEAP 1
347# define EV_HEAP_CACHE_AT 1
348#endif
349
350#ifndef EV_VERIFY
351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
352#endif
353
240#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
241# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
242#endif 356#endif
243 357
244#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
245# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif
361
362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
363/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL
365# include <sys/syscall.h>
366# ifdef SYS_clock_gettime
367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
368# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 1
370# else
371# undef EV_USE_CLOCK_SYSCALL
372# define EV_USE_CLOCK_SYSCALL 0
373# endif
246#endif 374#endif
247 375
248/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 376/* this block fixes any misconfiguration where we know we run into trouble otherwise */
377
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
249 383
250#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
251# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
252# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
253#endif 387#endif
… …
261# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
262# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
263#endif 397#endif
264 398
265#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
266# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
267# include <sys/select.h> 402# include <sys/select.h>
268# endif 403# endif
269#endif 404#endif
270 405
271#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
407# include <sys/statfs.h>
272# include <sys/inotify.h> 408# include <sys/inotify.h>
409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
410# ifndef IN_DONT_FOLLOW
411# undef EV_USE_INOTIFY
412# define EV_USE_INOTIFY 0
273#endif 413# endif
274
275#if EV_SELECT_IS_WINSOCKET
276# include <winsock.h>
277#endif 414#endif
278 415
279#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
280/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
281# include <stdint.h> 418# include <stdint.h>
282# ifdef __cplusplus 419# ifndef EFD_NONBLOCK
283extern "C" { 420# define EFD_NONBLOCK O_NONBLOCK
284# endif 421# endif
285int eventfd (unsigned int initval, int flags); 422# ifndef EFD_CLOEXEC
286# ifdef __cplusplus 423# ifdef O_CLOEXEC
287} 424# define EFD_CLOEXEC O_CLOEXEC
425# else
426# define EFD_CLOEXEC 02000000
427# endif
288# endif 428# endif
429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
430#endif
431
432#if EV_USE_SIGNALFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
434# include <stdint.h>
435# ifndef SFD_NONBLOCK
436# define SFD_NONBLOCK O_NONBLOCK
437# endif
438# ifndef SFD_CLOEXEC
439# ifdef O_CLOEXEC
440# define SFD_CLOEXEC O_CLOEXEC
441# else
442# define SFD_CLOEXEC 02000000
443# endif
444# endif
445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
446
447struct signalfd_siginfo
448{
449 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)];
451};
289#endif 452#endif
290 453
291/**/ 454/**/
292 455
456#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else
459# define EV_FREQUENT_CHECK do { } while (0)
460#endif
461
293/* 462/*
294 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
295 * It is added to ev_rt_now when scheduling periodics
296 * to ensure progress, time-wise, even when rounding
297 * errors are against us.
298 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
299 * Better solutions welcome.
300 */ 465 */
301#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
302 468
303#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
304#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
305/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
306 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509#ifdef _WIN32
510 typedef signed char int8_t;
511 typedef unsigned char uint8_t;
512 typedef signed short int16_t;
513 typedef unsigned short uint16_t;
514 typedef signed int int32_t;
515 typedef unsigned int uint32_t;
307#if __GNUC__ >= 4 516 #if __GNUC__
308# define expect(expr,value) __builtin_expect ((expr),(value)) 517 typedef signed long long int64_t;
309# define noinline __attribute__ ((noinline)) 518 typedef unsigned long long uint64_t;
519 #else /* _MSC_VER || __BORLANDC__ */
520 typedef signed __int64 int64_t;
521 typedef unsigned __int64 uint64_t;
522 #endif
310#else 523#else
311# define expect(expr,value) (expr) 524 #include <inttypes.h>
312# define noinline
313# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
314# define inline
315# endif 525#endif
526
527/* many compilers define _GNUC_ to some versions but then only implement
528 * what their idiot authors think are the "more important" extensions,
529 * causing enormous grief in return for some better fake benchmark numbers.
530 * or so.
531 * we try to detect these and simply assume they are not gcc - if they have
532 * an issue with that they should have done it right in the first place.
533 */
534#ifndef ECB_GCC_VERSION
535 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
536 #define ECB_GCC_VERSION(major,minor) 0
537 #else
538 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
316#endif 539 #endif
540#endif
317 541
542/*****************************************************************************/
543
544/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
545/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
546
547#if ECB_NO_THREADS
548# define ECB_NO_SMP 1
549#endif
550
551#if ECB_NO_THREADS || ECB_NO_SMP
552 #define ECB_MEMORY_FENCE do { } while (0)
553#endif
554
555#ifndef ECB_MEMORY_FENCE
556 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
557 #if __i386 || __i386__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
559 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
560 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
561 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
565 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
567 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
568 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
570 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
571 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
573 #elif __sparc || __sparc__
574 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
575 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
576 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
577 #elif defined __s390__ || defined __s390x__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
579 #elif defined __mips__
580 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
581 #elif defined __alpha__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
583 #endif
584 #endif
585#endif
586
587#ifndef ECB_MEMORY_FENCE
588 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
589 #define ECB_MEMORY_FENCE __sync_synchronize ()
590 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
591 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
592 #elif _MSC_VER >= 1400 /* VC++ 2005 */
593 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
594 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
595 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
596 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
597 #elif defined _WIN32
598 #include <WinNT.h>
599 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
600 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
601 #include <mbarrier.h>
602 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
603 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
604 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
605 #elif __xlC__
606 #define ECB_MEMORY_FENCE __sync ()
607 #endif
608#endif
609
610#ifndef ECB_MEMORY_FENCE
611 #if !ECB_AVOID_PTHREADS
612 /*
613 * if you get undefined symbol references to pthread_mutex_lock,
614 * or failure to find pthread.h, then you should implement
615 * the ECB_MEMORY_FENCE operations for your cpu/compiler
616 * OR provide pthread.h and link against the posix thread library
617 * of your system.
618 */
619 #include <pthread.h>
620 #define ECB_NEEDS_PTHREADS 1
621 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
622
623 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
624 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
625 #endif
626#endif
627
628#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
629 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
630#endif
631
632#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
634#endif
635
636/*****************************************************************************/
637
638#define ECB_C99 (__STDC_VERSION__ >= 199901L)
639
640#if __cplusplus
641 #define ecb_inline static inline
642#elif ECB_GCC_VERSION(2,5)
643 #define ecb_inline static __inline__
644#elif ECB_C99
645 #define ecb_inline static inline
646#else
647 #define ecb_inline static
648#endif
649
650#if ECB_GCC_VERSION(3,3)
651 #define ecb_restrict __restrict__
652#elif ECB_C99
653 #define ecb_restrict restrict
654#else
655 #define ecb_restrict
656#endif
657
658typedef int ecb_bool;
659
660#define ECB_CONCAT_(a, b) a ## b
661#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
662#define ECB_STRINGIFY_(a) # a
663#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
664
665#define ecb_function_ ecb_inline
666
667#if ECB_GCC_VERSION(3,1)
668 #define ecb_attribute(attrlist) __attribute__(attrlist)
669 #define ecb_is_constant(expr) __builtin_constant_p (expr)
670 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
671 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
672#else
673 #define ecb_attribute(attrlist)
674 #define ecb_is_constant(expr) 0
675 #define ecb_expect(expr,value) (expr)
676 #define ecb_prefetch(addr,rw,locality)
677#endif
678
679/* no emulation for ecb_decltype */
680#if ECB_GCC_VERSION(4,5)
681 #define ecb_decltype(x) __decltype(x)
682#elif ECB_GCC_VERSION(3,0)
683 #define ecb_decltype(x) __typeof(x)
684#endif
685
686#define ecb_noinline ecb_attribute ((__noinline__))
687#define ecb_noreturn ecb_attribute ((__noreturn__))
688#define ecb_unused ecb_attribute ((__unused__))
689#define ecb_const ecb_attribute ((__const__))
690#define ecb_pure ecb_attribute ((__pure__))
691
692#if ECB_GCC_VERSION(4,3)
693 #define ecb_artificial ecb_attribute ((__artificial__))
694 #define ecb_hot ecb_attribute ((__hot__))
695 #define ecb_cold ecb_attribute ((__cold__))
696#else
697 #define ecb_artificial
698 #define ecb_hot
699 #define ecb_cold
700#endif
701
702/* put around conditional expressions if you are very sure that the */
703/* expression is mostly true or mostly false. note that these return */
704/* booleans, not the expression. */
318#define expect_false(expr) expect ((expr) != 0, 0) 705#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
319#define expect_true(expr) expect ((expr) != 0, 1) 706#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
707/* for compatibility to the rest of the world */
708#define ecb_likely(expr) ecb_expect_true (expr)
709#define ecb_unlikely(expr) ecb_expect_false (expr)
710
711/* count trailing zero bits and count # of one bits */
712#if ECB_GCC_VERSION(3,4)
713 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
714 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
715 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
716 #define ecb_ctz32(x) __builtin_ctz (x)
717 #define ecb_ctz64(x) __builtin_ctzll (x)
718 #define ecb_popcount32(x) __builtin_popcount (x)
719 /* no popcountll */
720#else
721 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
722 ecb_function_ int
723 ecb_ctz32 (uint32_t x)
724 {
725 int r = 0;
726
727 x &= ~x + 1; /* this isolates the lowest bit */
728
729#if ECB_branchless_on_i386
730 r += !!(x & 0xaaaaaaaa) << 0;
731 r += !!(x & 0xcccccccc) << 1;
732 r += !!(x & 0xf0f0f0f0) << 2;
733 r += !!(x & 0xff00ff00) << 3;
734 r += !!(x & 0xffff0000) << 4;
735#else
736 if (x & 0xaaaaaaaa) r += 1;
737 if (x & 0xcccccccc) r += 2;
738 if (x & 0xf0f0f0f0) r += 4;
739 if (x & 0xff00ff00) r += 8;
740 if (x & 0xffff0000) r += 16;
741#endif
742
743 return r;
744 }
745
746 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
747 ecb_function_ int
748 ecb_ctz64 (uint64_t x)
749 {
750 int shift = x & 0xffffffffU ? 0 : 32;
751 return ecb_ctz32 (x >> shift) + shift;
752 }
753
754 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
755 ecb_function_ int
756 ecb_popcount32 (uint32_t x)
757 {
758 x -= (x >> 1) & 0x55555555;
759 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
760 x = ((x >> 4) + x) & 0x0f0f0f0f;
761 x *= 0x01010101;
762
763 return x >> 24;
764 }
765
766 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
767 ecb_function_ int ecb_ld32 (uint32_t x)
768 {
769 int r = 0;
770
771 if (x >> 16) { x >>= 16; r += 16; }
772 if (x >> 8) { x >>= 8; r += 8; }
773 if (x >> 4) { x >>= 4; r += 4; }
774 if (x >> 2) { x >>= 2; r += 2; }
775 if (x >> 1) { r += 1; }
776
777 return r;
778 }
779
780 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
781 ecb_function_ int ecb_ld64 (uint64_t x)
782 {
783 int r = 0;
784
785 if (x >> 32) { x >>= 32; r += 32; }
786
787 return r + ecb_ld32 (x);
788 }
789#endif
790
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
793{
794 return ( (x * 0x0802U & 0x22110U)
795 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
796}
797
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
800{
801 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
802 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
803 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
804 x = ( x >> 8 ) | ( x << 8);
805
806 return x;
807}
808
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
811{
812 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
813 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
814 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
815 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
816 x = ( x >> 16 ) | ( x << 16);
817
818 return x;
819}
820
821/* popcount64 is only available on 64 bit cpus as gcc builtin */
822/* so for this version we are lazy */
823ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
824ecb_function_ int
825ecb_popcount64 (uint64_t x)
826{
827 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
828}
829
830ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
831ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
838
839ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
840ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
841ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
842ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
843ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
844ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
845ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
846ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
847
848#if ECB_GCC_VERSION(4,3)
849 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
850 #define ecb_bswap32(x) __builtin_bswap32 (x)
851 #define ecb_bswap64(x) __builtin_bswap64 (x)
852#else
853 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
854 ecb_function_ uint16_t
855 ecb_bswap16 (uint16_t x)
856 {
857 return ecb_rotl16 (x, 8);
858 }
859
860 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
861 ecb_function_ uint32_t
862 ecb_bswap32 (uint32_t x)
863 {
864 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
865 }
866
867 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
868 ecb_function_ uint64_t
869 ecb_bswap64 (uint64_t x)
870 {
871 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
872 }
873#endif
874
875#if ECB_GCC_VERSION(4,5)
876 #define ecb_unreachable() __builtin_unreachable ()
877#else
878 /* this seems to work fine, but gcc always emits a warning for it :/ */
879 ecb_inline void ecb_unreachable (void) ecb_noreturn;
880 ecb_inline void ecb_unreachable (void) { }
881#endif
882
883/* try to tell the compiler that some condition is definitely true */
884#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
885
886ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
887ecb_inline unsigned char
888ecb_byteorder_helper (void)
889{
890 const uint32_t u = 0x11223344;
891 return *(unsigned char *)&u;
892}
893
894ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
895ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
896ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
897ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
898
899#if ECB_GCC_VERSION(3,0) || ECB_C99
900 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
901#else
902 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
903#endif
904
905#if __cplusplus
906 template<typename T>
907 static inline T ecb_div_rd (T val, T div)
908 {
909 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
910 }
911 template<typename T>
912 static inline T ecb_div_ru (T val, T div)
913 {
914 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
915 }
916#else
917 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
918 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
919#endif
920
921#if ecb_cplusplus_does_not_suck
922 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
923 template<typename T, int N>
924 static inline int ecb_array_length (const T (&arr)[N])
925 {
926 return N;
927 }
928#else
929 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
930#endif
931
932#endif
933
934/* ECB.H END */
935
936#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
937/* if your architecture doesn't need memory fences, e.g. because it is
938 * single-cpu/core, or if you use libev in a project that doesn't use libev
939 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
940 * libev, in which cases the memory fences become nops.
941 * alternatively, you can remove this #error and link against libpthread,
942 * which will then provide the memory fences.
943 */
944# error "memory fences not defined for your architecture, please report"
945#endif
946
947#ifndef ECB_MEMORY_FENCE
948# define ECB_MEMORY_FENCE do { } while (0)
949# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
950# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
951#endif
952
953#define expect_false(cond) ecb_expect_false (cond)
954#define expect_true(cond) ecb_expect_true (cond)
955#define noinline ecb_noinline
956
320#define inline_size static inline 957#define inline_size ecb_inline
321 958
322#if EV_MINIMAL 959#if EV_FEATURE_CODE
960# define inline_speed ecb_inline
961#else
323# define inline_speed static noinline 962# define inline_speed static noinline
963#endif
964
965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
966
967#if EV_MINPRI == EV_MAXPRI
968# define ABSPRI(w) (((W)w), 0)
324#else 969#else
325# define inline_speed static inline
326#endif
327
328#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
329#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 970# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
971#endif
330 972
331#define EMPTY /* required for microsofts broken pseudo-c compiler */ 973#define EMPTY /* required for microsofts broken pseudo-c compiler */
332#define EMPTY2(a,b) /* used to suppress some warnings */ 974#define EMPTY2(a,b) /* used to suppress some warnings */
333 975
334typedef ev_watcher *W; 976typedef ev_watcher *W;
… …
336typedef ev_watcher_time *WT; 978typedef ev_watcher_time *WT;
337 979
338#define ev_active(w) ((W)(w))->active 980#define ev_active(w) ((W)(w))->active
339#define ev_at(w) ((WT)(w))->at 981#define ev_at(w) ((WT)(w))->at
340 982
983#if EV_USE_REALTIME
984/* sig_atomic_t is used to avoid per-thread variables or locking but still */
985/* giving it a reasonably high chance of working on typical architectures */
986static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
987#endif
988
341#if EV_USE_MONOTONIC 989#if EV_USE_MONOTONIC
342/* sig_atomic_t is used to avoid per-thread variables or locking but still */
343/* giving it a reasonably high chance of working on typical architetcures */
344static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 990static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
991#endif
992
993#ifndef EV_FD_TO_WIN32_HANDLE
994# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
995#endif
996#ifndef EV_WIN32_HANDLE_TO_FD
997# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
998#endif
999#ifndef EV_WIN32_CLOSE_FD
1000# define EV_WIN32_CLOSE_FD(fd) close (fd)
345#endif 1001#endif
346 1002
347#ifdef _WIN32 1003#ifdef _WIN32
348# include "ev_win32.c" 1004# include "ev_win32.c"
349#endif 1005#endif
350 1006
351/*****************************************************************************/ 1007/*****************************************************************************/
352 1008
1009/* define a suitable floor function (only used by periodics atm) */
1010
1011#if EV_USE_FLOOR
1012# include <math.h>
1013# define ev_floor(v) floor (v)
1014#else
1015
1016#include <float.h>
1017
1018/* a floor() replacement function, should be independent of ev_tstamp type */
1019static ev_tstamp noinline
1020ev_floor (ev_tstamp v)
1021{
1022 /* the choice of shift factor is not terribly important */
1023#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1024 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1025#else
1026 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1027#endif
1028
1029 /* argument too large for an unsigned long? */
1030 if (expect_false (v >= shift))
1031 {
1032 ev_tstamp f;
1033
1034 if (v == v - 1.)
1035 return v; /* very large number */
1036
1037 f = shift * ev_floor (v * (1. / shift));
1038 return f + ev_floor (v - f);
1039 }
1040
1041 /* special treatment for negative args? */
1042 if (expect_false (v < 0.))
1043 {
1044 ev_tstamp f = -ev_floor (-v);
1045
1046 return f - (f == v ? 0 : 1);
1047 }
1048
1049 /* fits into an unsigned long */
1050 return (unsigned long)v;
1051}
1052
1053#endif
1054
1055/*****************************************************************************/
1056
1057#ifdef __linux
1058# include <sys/utsname.h>
1059#endif
1060
1061static unsigned int noinline ecb_cold
1062ev_linux_version (void)
1063{
1064#ifdef __linux
1065 unsigned int v = 0;
1066 struct utsname buf;
1067 int i;
1068 char *p = buf.release;
1069
1070 if (uname (&buf))
1071 return 0;
1072
1073 for (i = 3+1; --i; )
1074 {
1075 unsigned int c = 0;
1076
1077 for (;;)
1078 {
1079 if (*p >= '0' && *p <= '9')
1080 c = c * 10 + *p++ - '0';
1081 else
1082 {
1083 p += *p == '.';
1084 break;
1085 }
1086 }
1087
1088 v = (v << 8) | c;
1089 }
1090
1091 return v;
1092#else
1093 return 0;
1094#endif
1095}
1096
1097/*****************************************************************************/
1098
1099#if EV_AVOID_STDIO
1100static void noinline ecb_cold
1101ev_printerr (const char *msg)
1102{
1103 write (STDERR_FILENO, msg, strlen (msg));
1104}
1105#endif
1106
353static void (*syserr_cb)(const char *msg); 1107static void (*syserr_cb)(const char *msg) EV_THROW;
354 1108
355void 1109void ecb_cold
356ev_set_syserr_cb (void (*cb)(const char *msg)) 1110ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
357{ 1111{
358 syserr_cb = cb; 1112 syserr_cb = cb;
359} 1113}
360 1114
361static void noinline 1115static void noinline ecb_cold
362syserr (const char *msg) 1116ev_syserr (const char *msg)
363{ 1117{
364 if (!msg) 1118 if (!msg)
365 msg = "(libev) system error"; 1119 msg = "(libev) system error";
366 1120
367 if (syserr_cb) 1121 if (syserr_cb)
368 syserr_cb (msg); 1122 syserr_cb (msg);
369 else 1123 else
370 { 1124 {
1125#if EV_AVOID_STDIO
1126 ev_printerr (msg);
1127 ev_printerr (": ");
1128 ev_printerr (strerror (errno));
1129 ev_printerr ("\n");
1130#else
371 perror (msg); 1131 perror (msg);
1132#endif
372 abort (); 1133 abort ();
373 } 1134 }
374} 1135}
375 1136
376static void * 1137static void *
377ev_realloc_emul (void *ptr, long size) 1138ev_realloc_emul (void *ptr, long size)
378{ 1139{
1140#if __GLIBC__
1141 return realloc (ptr, size);
1142#else
379 /* some systems, notably openbsd and darwin, fail to properly 1143 /* some systems, notably openbsd and darwin, fail to properly
380 * implement realloc (x, 0) (as required by both ansi c-98 and 1144 * implement realloc (x, 0) (as required by both ansi c-89 and
381 * the single unix specification, so work around them here. 1145 * the single unix specification, so work around them here.
382 */ 1146 */
383 1147
384 if (size) 1148 if (size)
385 return realloc (ptr, size); 1149 return realloc (ptr, size);
386 1150
387 free (ptr); 1151 free (ptr);
388 return 0; 1152 return 0;
1153#endif
389} 1154}
390 1155
391static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
392 1157
393void 1158void ecb_cold
394ev_set_allocator (void *(*cb)(void *ptr, long size)) 1159ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
395{ 1160{
396 alloc = cb; 1161 alloc = cb;
397} 1162}
398 1163
399inline_speed void * 1164inline_speed void *
… …
401{ 1166{
402 ptr = alloc (ptr, size); 1167 ptr = alloc (ptr, size);
403 1168
404 if (!ptr && size) 1169 if (!ptr && size)
405 { 1170 {
1171#if EV_AVOID_STDIO
1172 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1173#else
406 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1174 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1175#endif
407 abort (); 1176 abort ();
408 } 1177 }
409 1178
410 return ptr; 1179 return ptr;
411} 1180}
… …
413#define ev_malloc(size) ev_realloc (0, (size)) 1182#define ev_malloc(size) ev_realloc (0, (size))
414#define ev_free(ptr) ev_realloc ((ptr), 0) 1183#define ev_free(ptr) ev_realloc ((ptr), 0)
415 1184
416/*****************************************************************************/ 1185/*****************************************************************************/
417 1186
1187/* set in reify when reification needed */
1188#define EV_ANFD_REIFY 1
1189
1190/* file descriptor info structure */
418typedef struct 1191typedef struct
419{ 1192{
420 WL head; 1193 WL head;
421 unsigned char events; 1194 unsigned char events; /* the events watched for */
1195 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1196 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
422 unsigned char reify; 1197 unsigned char unused;
1198#if EV_USE_EPOLL
1199 unsigned int egen; /* generation counter to counter epoll bugs */
1200#endif
423#if EV_SELECT_IS_WINSOCKET 1201#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
424 SOCKET handle; 1202 SOCKET handle;
425#endif 1203#endif
1204#if EV_USE_IOCP
1205 OVERLAPPED or, ow;
1206#endif
426} ANFD; 1207} ANFD;
427 1208
1209/* stores the pending event set for a given watcher */
428typedef struct 1210typedef struct
429{ 1211{
430 W w; 1212 W w;
431 int events; 1213 int events; /* the pending event set for the given watcher */
432} ANPENDING; 1214} ANPENDING;
433 1215
434#if EV_USE_INOTIFY 1216#if EV_USE_INOTIFY
435/* hash table entry per inotify-id */ 1217/* hash table entry per inotify-id */
436typedef struct 1218typedef struct
… …
439} ANFS; 1221} ANFS;
440#endif 1222#endif
441 1223
442/* Heap Entry */ 1224/* Heap Entry */
443#if EV_HEAP_CACHE_AT 1225#if EV_HEAP_CACHE_AT
1226 /* a heap element */
444 typedef struct { 1227 typedef struct {
445 ev_tstamp at; 1228 ev_tstamp at;
446 WT w; 1229 WT w;
447 } ANHE; 1230 } ANHE;
448 1231
449 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1232 #define ANHE_w(he) (he).w /* access watcher, read-write */
450 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1233 #define ANHE_at(he) (he).at /* access cached at, read-only */
451 #define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */ 1234 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452#else 1235#else
1236 /* a heap element */
453 typedef WT ANHE; 1237 typedef WT ANHE;
454 1238
455 #define ANHE_w(he) (he) 1239 #define ANHE_w(he) (he)
456 #define ANHE_at(he) (he)->at 1240 #define ANHE_at(he) (he)->at
457 #define ANHE_at_set(he) 1241 #define ANHE_at_cache(he)
458#endif 1242#endif
459 1243
460#if EV_MULTIPLICITY 1244#if EV_MULTIPLICITY
461 1245
462 struct ev_loop 1246 struct ev_loop
… …
468 #undef VAR 1252 #undef VAR
469 }; 1253 };
470 #include "ev_wrap.h" 1254 #include "ev_wrap.h"
471 1255
472 static struct ev_loop default_loop_struct; 1256 static struct ev_loop default_loop_struct;
473 struct ev_loop *ev_default_loop_ptr; 1257 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
474 1258
475#else 1259#else
476 1260
477 ev_tstamp ev_rt_now; 1261 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
478 #define VAR(name,decl) static decl; 1262 #define VAR(name,decl) static decl;
479 #include "ev_vars.h" 1263 #include "ev_vars.h"
480 #undef VAR 1264 #undef VAR
481 1265
482 static int ev_default_loop_ptr; 1266 static int ev_default_loop_ptr;
483 1267
484#endif 1268#endif
485 1269
1270#if EV_FEATURE_API
1271# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1272# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1273# define EV_INVOKE_PENDING invoke_cb (EV_A)
1274#else
1275# define EV_RELEASE_CB (void)0
1276# define EV_ACQUIRE_CB (void)0
1277# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1278#endif
1279
1280#define EVBREAK_RECURSE 0x80
1281
486/*****************************************************************************/ 1282/*****************************************************************************/
487 1283
1284#ifndef EV_HAVE_EV_TIME
488ev_tstamp 1285ev_tstamp
489ev_time (void) 1286ev_time (void) EV_THROW
490{ 1287{
491#if EV_USE_REALTIME 1288#if EV_USE_REALTIME
1289 if (expect_true (have_realtime))
1290 {
492 struct timespec ts; 1291 struct timespec ts;
493 clock_gettime (CLOCK_REALTIME, &ts); 1292 clock_gettime (CLOCK_REALTIME, &ts);
494 return ts.tv_sec + ts.tv_nsec * 1e-9; 1293 return ts.tv_sec + ts.tv_nsec * 1e-9;
495#else 1294 }
1295#endif
1296
496 struct timeval tv; 1297 struct timeval tv;
497 gettimeofday (&tv, 0); 1298 gettimeofday (&tv, 0);
498 return tv.tv_sec + tv.tv_usec * 1e-6; 1299 return tv.tv_sec + tv.tv_usec * 1e-6;
499#endif
500} 1300}
1301#endif
501 1302
502ev_tstamp inline_size 1303inline_size ev_tstamp
503get_clock (void) 1304get_clock (void)
504{ 1305{
505#if EV_USE_MONOTONIC 1306#if EV_USE_MONOTONIC
506 if (expect_true (have_monotonic)) 1307 if (expect_true (have_monotonic))
507 { 1308 {
… …
514 return ev_time (); 1315 return ev_time ();
515} 1316}
516 1317
517#if EV_MULTIPLICITY 1318#if EV_MULTIPLICITY
518ev_tstamp 1319ev_tstamp
519ev_now (EV_P) 1320ev_now (EV_P) EV_THROW
520{ 1321{
521 return ev_rt_now; 1322 return ev_rt_now;
522} 1323}
523#endif 1324#endif
524 1325
525void 1326void
526ev_sleep (ev_tstamp delay) 1327ev_sleep (ev_tstamp delay) EV_THROW
527{ 1328{
528 if (delay > 0.) 1329 if (delay > 0.)
529 { 1330 {
530#if EV_USE_NANOSLEEP 1331#if EV_USE_NANOSLEEP
531 struct timespec ts; 1332 struct timespec ts;
532 1333
533 ts.tv_sec = (time_t)delay; 1334 EV_TS_SET (ts, delay);
534 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
535
536 nanosleep (&ts, 0); 1335 nanosleep (&ts, 0);
537#elif defined(_WIN32) 1336#elif defined _WIN32
538 Sleep ((unsigned long)(delay * 1e3)); 1337 Sleep ((unsigned long)(delay * 1e3));
539#else 1338#else
540 struct timeval tv; 1339 struct timeval tv;
541 1340
542 tv.tv_sec = (time_t)delay; 1341 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
543 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 1342 /* something not guaranteed by newer posix versions, but guaranteed */
544 1343 /* by older ones */
1344 EV_TV_SET (tv, delay);
545 select (0, 0, 0, 0, &tv); 1345 select (0, 0, 0, 0, &tv);
546#endif 1346#endif
547 } 1347 }
548} 1348}
549 1349
550/*****************************************************************************/ 1350/*****************************************************************************/
551 1351
552#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1352#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
553 1353
554int inline_size 1354/* find a suitable new size for the given array, */
1355/* hopefully by rounding to a nice-to-malloc size */
1356inline_size int
555array_nextsize (int elem, int cur, int cnt) 1357array_nextsize (int elem, int cur, int cnt)
556{ 1358{
557 int ncur = cur + 1; 1359 int ncur = cur + 1;
558 1360
559 do 1361 do
560 ncur <<= 1; 1362 ncur <<= 1;
561 while (cnt > ncur); 1363 while (cnt > ncur);
562 1364
563 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1365 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
564 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1366 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
565 { 1367 {
566 ncur *= elem; 1368 ncur *= elem;
567 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1369 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
568 ncur = ncur - sizeof (void *) * 4; 1370 ncur = ncur - sizeof (void *) * 4;
… …
570 } 1372 }
571 1373
572 return ncur; 1374 return ncur;
573} 1375}
574 1376
575static noinline void * 1377static void * noinline ecb_cold
576array_realloc (int elem, void *base, int *cur, int cnt) 1378array_realloc (int elem, void *base, int *cur, int cnt)
577{ 1379{
578 *cur = array_nextsize (elem, *cur, cnt); 1380 *cur = array_nextsize (elem, *cur, cnt);
579 return ev_realloc (base, elem * *cur); 1381 return ev_realloc (base, elem * *cur);
580} 1382}
1383
1384#define array_init_zero(base,count) \
1385 memset ((void *)(base), 0, sizeof (*(base)) * (count))
581 1386
582#define array_needsize(type,base,cur,cnt,init) \ 1387#define array_needsize(type,base,cur,cnt,init) \
583 if (expect_false ((cnt) > (cur))) \ 1388 if (expect_false ((cnt) > (cur))) \
584 { \ 1389 { \
585 int ocur_ = (cur); \ 1390 int ecb_unused ocur_ = (cur); \
586 (base) = (type *)array_realloc \ 1391 (base) = (type *)array_realloc \
587 (sizeof (type), (base), &(cur), (cnt)); \ 1392 (sizeof (type), (base), &(cur), (cnt)); \
588 init ((base) + (ocur_), (cur) - ocur_); \ 1393 init ((base) + (ocur_), (cur) - ocur_); \
589 } 1394 }
590 1395
… …
597 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1402 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598 } 1403 }
599#endif 1404#endif
600 1405
601#define array_free(stem, idx) \ 1406#define array_free(stem, idx) \
602 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1407 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
603 1408
604/*****************************************************************************/ 1409/*****************************************************************************/
605 1410
1411/* dummy callback for pending events */
1412static void noinline
1413pendingcb (EV_P_ ev_prepare *w, int revents)
1414{
1415}
1416
606void noinline 1417void noinline
607ev_feed_event (EV_P_ void *w, int revents) 1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW
608{ 1419{
609 W w_ = (W)w; 1420 W w_ = (W)w;
610 int pri = ABSPRI (w_); 1421 int pri = ABSPRI (w_);
611 1422
612 if (expect_false (w_->pending)) 1423 if (expect_false (w_->pending))
… …
616 w_->pending = ++pendingcnt [pri]; 1427 w_->pending = ++pendingcnt [pri];
617 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
618 pendings [pri][w_->pending - 1].w = w_; 1429 pendings [pri][w_->pending - 1].w = w_;
619 pendings [pri][w_->pending - 1].events = revents; 1430 pendings [pri][w_->pending - 1].events = revents;
620 } 1431 }
621}
622 1432
623void inline_speed 1433 pendingpri = NUMPRI - 1;
1434}
1435
1436inline_speed void
1437feed_reverse (EV_P_ W w)
1438{
1439 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1440 rfeeds [rfeedcnt++] = w;
1441}
1442
1443inline_size void
1444feed_reverse_done (EV_P_ int revents)
1445{
1446 do
1447 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1448 while (rfeedcnt);
1449}
1450
1451inline_speed void
624queue_events (EV_P_ W *events, int eventcnt, int type) 1452queue_events (EV_P_ W *events, int eventcnt, int type)
625{ 1453{
626 int i; 1454 int i;
627 1455
628 for (i = 0; i < eventcnt; ++i) 1456 for (i = 0; i < eventcnt; ++i)
629 ev_feed_event (EV_A_ events [i], type); 1457 ev_feed_event (EV_A_ events [i], type);
630} 1458}
631 1459
632/*****************************************************************************/ 1460/*****************************************************************************/
633 1461
634void inline_size 1462inline_speed void
635anfds_init (ANFD *base, int count)
636{
637 while (count--)
638 {
639 base->head = 0;
640 base->events = EV_NONE;
641 base->reify = 0;
642
643 ++base;
644 }
645}
646
647void inline_speed
648fd_event (EV_P_ int fd, int revents) 1463fd_event_nocheck (EV_P_ int fd, int revents)
649{ 1464{
650 ANFD *anfd = anfds + fd; 1465 ANFD *anfd = anfds + fd;
651 ev_io *w; 1466 ev_io *w;
652 1467
653 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1468 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
657 if (ev) 1472 if (ev)
658 ev_feed_event (EV_A_ (W)w, ev); 1473 ev_feed_event (EV_A_ (W)w, ev);
659 } 1474 }
660} 1475}
661 1476
1477/* do not submit kernel events for fds that have reify set */
1478/* because that means they changed while we were polling for new events */
1479inline_speed void
1480fd_event (EV_P_ int fd, int revents)
1481{
1482 ANFD *anfd = anfds + fd;
1483
1484 if (expect_true (!anfd->reify))
1485 fd_event_nocheck (EV_A_ fd, revents);
1486}
1487
662void 1488void
663ev_feed_fd_event (EV_P_ int fd, int revents) 1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
664{ 1490{
665 if (fd >= 0 && fd < anfdmax) 1491 if (fd >= 0 && fd < anfdmax)
666 fd_event (EV_A_ fd, revents); 1492 fd_event_nocheck (EV_A_ fd, revents);
667} 1493}
668 1494
669void inline_size 1495/* make sure the external fd watch events are in-sync */
1496/* with the kernel/libev internal state */
1497inline_size void
670fd_reify (EV_P) 1498fd_reify (EV_P)
671{ 1499{
672 int i; 1500 int i;
1501
1502#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1503 for (i = 0; i < fdchangecnt; ++i)
1504 {
1505 int fd = fdchanges [i];
1506 ANFD *anfd = anfds + fd;
1507
1508 if (anfd->reify & EV__IOFDSET && anfd->head)
1509 {
1510 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1511
1512 if (handle != anfd->handle)
1513 {
1514 unsigned long arg;
1515
1516 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1517
1518 /* handle changed, but fd didn't - we need to do it in two steps */
1519 backend_modify (EV_A_ fd, anfd->events, 0);
1520 anfd->events = 0;
1521 anfd->handle = handle;
1522 }
1523 }
1524 }
1525#endif
673 1526
674 for (i = 0; i < fdchangecnt; ++i) 1527 for (i = 0; i < fdchangecnt; ++i)
675 { 1528 {
676 int fd = fdchanges [i]; 1529 int fd = fdchanges [i];
677 ANFD *anfd = anfds + fd; 1530 ANFD *anfd = anfds + fd;
678 ev_io *w; 1531 ev_io *w;
679 1532
680 unsigned char events = 0; 1533 unsigned char o_events = anfd->events;
1534 unsigned char o_reify = anfd->reify;
681 1535
682 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1536 anfd->reify = 0;
683 events |= (unsigned char)w->events;
684 1537
685#if EV_SELECT_IS_WINSOCKET 1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
686 if (events)
687 { 1539 {
688 unsigned long argp; 1540 anfd->events = 0;
689 #ifdef EV_FD_TO_WIN32_HANDLE 1541
690 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1542 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
691 #else 1543 anfd->events |= (unsigned char)w->events;
692 anfd->handle = _get_osfhandle (fd); 1544
693 #endif 1545 if (o_events != anfd->events)
694 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1546 o_reify = EV__IOFDSET; /* actually |= */
695 } 1547 }
696#endif
697 1548
698 { 1549 if (o_reify & EV__IOFDSET)
699 unsigned char o_events = anfd->events;
700 unsigned char o_reify = anfd->reify;
701
702 anfd->reify = 0;
703 anfd->events = events;
704
705 if (o_events != events || o_reify & EV_IOFDSET)
706 backend_modify (EV_A_ fd, o_events, events); 1550 backend_modify (EV_A_ fd, o_events, anfd->events);
707 }
708 } 1551 }
709 1552
710 fdchangecnt = 0; 1553 fdchangecnt = 0;
711} 1554}
712 1555
713void inline_size 1556/* something about the given fd changed */
1557inline_size void
714fd_change (EV_P_ int fd, int flags) 1558fd_change (EV_P_ int fd, int flags)
715{ 1559{
716 unsigned char reify = anfds [fd].reify; 1560 unsigned char reify = anfds [fd].reify;
717 anfds [fd].reify |= flags; 1561 anfds [fd].reify |= flags;
718 1562
… …
722 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1566 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
723 fdchanges [fdchangecnt - 1] = fd; 1567 fdchanges [fdchangecnt - 1] = fd;
724 } 1568 }
725} 1569}
726 1570
727void inline_speed 1571/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1572inline_speed void ecb_cold
728fd_kill (EV_P_ int fd) 1573fd_kill (EV_P_ int fd)
729{ 1574{
730 ev_io *w; 1575 ev_io *w;
731 1576
732 while ((w = (ev_io *)anfds [fd].head)) 1577 while ((w = (ev_io *)anfds [fd].head))
… …
734 ev_io_stop (EV_A_ w); 1579 ev_io_stop (EV_A_ w);
735 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1580 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
736 } 1581 }
737} 1582}
738 1583
739int inline_size 1584/* check whether the given fd is actually valid, for error recovery */
1585inline_size int ecb_cold
740fd_valid (int fd) 1586fd_valid (int fd)
741{ 1587{
742#ifdef _WIN32 1588#ifdef _WIN32
743 return _get_osfhandle (fd) != -1; 1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
744#else 1590#else
745 return fcntl (fd, F_GETFD) != -1; 1591 return fcntl (fd, F_GETFD) != -1;
746#endif 1592#endif
747} 1593}
748 1594
749/* called on EBADF to verify fds */ 1595/* called on EBADF to verify fds */
750static void noinline 1596static void noinline ecb_cold
751fd_ebadf (EV_P) 1597fd_ebadf (EV_P)
752{ 1598{
753 int fd; 1599 int fd;
754 1600
755 for (fd = 0; fd < anfdmax; ++fd) 1601 for (fd = 0; fd < anfdmax; ++fd)
756 if (anfds [fd].events) 1602 if (anfds [fd].events)
757 if (!fd_valid (fd) == -1 && errno == EBADF) 1603 if (!fd_valid (fd) && errno == EBADF)
758 fd_kill (EV_A_ fd); 1604 fd_kill (EV_A_ fd);
759} 1605}
760 1606
761/* called on ENOMEM in select/poll to kill some fds and retry */ 1607/* called on ENOMEM in select/poll to kill some fds and retry */
762static void noinline 1608static void noinline ecb_cold
763fd_enomem (EV_P) 1609fd_enomem (EV_P)
764{ 1610{
765 int fd; 1611 int fd;
766 1612
767 for (fd = anfdmax; fd--; ) 1613 for (fd = anfdmax; fd--; )
768 if (anfds [fd].events) 1614 if (anfds [fd].events)
769 { 1615 {
770 fd_kill (EV_A_ fd); 1616 fd_kill (EV_A_ fd);
771 return; 1617 break;
772 } 1618 }
773} 1619}
774 1620
775/* usually called after fork if backend needs to re-arm all fds from scratch */ 1621/* usually called after fork if backend needs to re-arm all fds from scratch */
776static void noinline 1622static void noinline
… …
780 1626
781 for (fd = 0; fd < anfdmax; ++fd) 1627 for (fd = 0; fd < anfdmax; ++fd)
782 if (anfds [fd].events) 1628 if (anfds [fd].events)
783 { 1629 {
784 anfds [fd].events = 0; 1630 anfds [fd].events = 0;
1631 anfds [fd].emask = 0;
785 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1632 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
786 } 1633 }
787} 1634}
788 1635
1636/* used to prepare libev internal fd's */
1637/* this is not fork-safe */
1638inline_speed void
1639fd_intern (int fd)
1640{
1641#ifdef _WIN32
1642 unsigned long arg = 1;
1643 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1644#else
1645 fcntl (fd, F_SETFD, FD_CLOEXEC);
1646 fcntl (fd, F_SETFL, O_NONBLOCK);
1647#endif
1648}
1649
789/*****************************************************************************/ 1650/*****************************************************************************/
790 1651
791/* 1652/*
792 * the heap functions want a real array index. array index 0 uis guaranteed to not 1653 * the heap functions want a real array index. array index 0 is guaranteed to not
793 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1654 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
794 * the branching factor of the d-tree. 1655 * the branching factor of the d-tree.
795 */ 1656 */
796 1657
797/* 1658/*
… …
802 */ 1663 */
803#if EV_USE_4HEAP 1664#if EV_USE_4HEAP
804 1665
805#define DHEAP 4 1666#define DHEAP 4
806#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1667#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807 1668#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808/* towards the root */ 1669#define UPHEAP_DONE(p,k) ((p) == (k))
809void inline_speed
810upheap (ANHE *heap, int k)
811{
812 ANHE he = heap [k];
813
814 for (;;)
815 {
816 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
817
818 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
819 break;
820
821 heap [k] = heap [p];
822 ev_active (ANHE_w (heap [k])) = k;
823 k = p;
824 }
825
826 ev_active (ANHE_w (he)) = k;
827 heap [k] = he;
828}
829 1670
830/* away from the root */ 1671/* away from the root */
831void inline_speed 1672inline_speed void
832downheap (ANHE *heap, int N, int k) 1673downheap (ANHE *heap, int N, int k)
833{ 1674{
834 ANHE he = heap [k]; 1675 ANHE he = heap [k];
835 ANHE *E = heap + N + HEAP0; 1676 ANHE *E = heap + N + HEAP0;
836 1677
837 for (;;) 1678 for (;;)
838 { 1679 {
839 ev_tstamp minat; 1680 ev_tstamp minat;
840 ANHE *minpos; 1681 ANHE *minpos;
841 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1682 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
842 1683
843 // find minimum child 1684 /* find minimum child */
844 if (expect_true (pos + DHEAP - 1 < E)) 1685 if (expect_true (pos + DHEAP - 1 < E))
845 { 1686 {
846 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1687 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847 if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1688 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
848 if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 1689 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
849 if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 1690 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
850 } 1691 }
851 else if (pos < E) 1692 else if (pos < E)
852 { 1693 {
853 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1694 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
854 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1695 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
… …
859 break; 1700 break;
860 1701
861 if (ANHE_at (he) <= minat) 1702 if (ANHE_at (he) <= minat)
862 break; 1703 break;
863 1704
1705 heap [k] = *minpos;
864 ev_active (ANHE_w (*minpos)) = k; 1706 ev_active (ANHE_w (*minpos)) = k;
865 heap [k] = *minpos;
866 1707
867 k = minpos - heap; 1708 k = minpos - heap;
868 } 1709 }
869 1710
1711 heap [k] = he;
870 ev_active (ANHE_w (he)) = k; 1712 ev_active (ANHE_w (he)) = k;
871 heap [k] = he;
872} 1713}
873 1714
874#else // 4HEAP 1715#else /* 4HEAP */
875 1716
876#define HEAP0 1 1717#define HEAP0 1
1718#define HPARENT(k) ((k) >> 1)
1719#define UPHEAP_DONE(p,k) (!(p))
877 1720
878/* towards the root */ 1721/* away from the root */
879void inline_speed 1722inline_speed void
880upheap (ANHE *heap, int k) 1723downheap (ANHE *heap, int N, int k)
881{ 1724{
882 ANHE he = heap [k]; 1725 ANHE he = heap [k];
883 1726
884 for (;;) 1727 for (;;)
885 { 1728 {
886 int p = k >> 1; 1729 int c = k << 1;
887 1730
888 /* maybe we could use a dummy element at heap [0]? */ 1731 if (c >= N + HEAP0)
889 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
890 break; 1732 break;
891 1733
892 heap [k] = heap [p];
893 ev_active (ANHE_w (heap [k])) = k;
894 k = p;
895 }
896
897 heap [k] = he;
898 ev_active (ANHE_w (heap [k])) = k;
899}
900
901/* away from the root */
902void inline_speed
903downheap (ANHE *heap, int N, int k)
904{
905 ANHE he = heap [k];
906
907 for (;;)
908 {
909 int c = k << 1;
910
911 if (c > N)
912 break;
913
914 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1734 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
915 ? 1 : 0; 1735 ? 1 : 0;
916 1736
917 if (ANHE_at (he) <= ANHE_at (heap [c])) 1737 if (ANHE_at (he) <= ANHE_at (heap [c]))
918 break; 1738 break;
919 1739
… …
926 heap [k] = he; 1746 heap [k] = he;
927 ev_active (ANHE_w (he)) = k; 1747 ev_active (ANHE_w (he)) = k;
928} 1748}
929#endif 1749#endif
930 1750
931void inline_size 1751/* towards the root */
1752inline_speed void
1753upheap (ANHE *heap, int k)
1754{
1755 ANHE he = heap [k];
1756
1757 for (;;)
1758 {
1759 int p = HPARENT (k);
1760
1761 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1762 break;
1763
1764 heap [k] = heap [p];
1765 ev_active (ANHE_w (heap [k])) = k;
1766 k = p;
1767 }
1768
1769 heap [k] = he;
1770 ev_active (ANHE_w (he)) = k;
1771}
1772
1773/* move an element suitably so it is in a correct place */
1774inline_size void
932adjustheap (ANHE *heap, int N, int k) 1775adjustheap (ANHE *heap, int N, int k)
933{ 1776{
1777 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
934 upheap (heap, k); 1778 upheap (heap, k);
1779 else
935 downheap (heap, N, k); 1780 downheap (heap, N, k);
1781}
1782
1783/* rebuild the heap: this function is used only once and executed rarely */
1784inline_size void
1785reheap (ANHE *heap, int N)
1786{
1787 int i;
1788
1789 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1790 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1791 for (i = 0; i < N; ++i)
1792 upheap (heap, i + HEAP0);
936} 1793}
937 1794
938/*****************************************************************************/ 1795/*****************************************************************************/
939 1796
1797/* associate signal watchers to a signal signal */
940typedef struct 1798typedef struct
941{ 1799{
1800 EV_ATOMIC_T pending;
1801#if EV_MULTIPLICITY
1802 EV_P;
1803#endif
942 WL head; 1804 WL head;
943 EV_ATOMIC_T gotsig;
944} ANSIG; 1805} ANSIG;
945 1806
946static ANSIG *signals; 1807static ANSIG signals [EV_NSIG - 1];
947static int signalmax;
948
949static EV_ATOMIC_T gotsig;
950
951void inline_size
952signals_init (ANSIG *base, int count)
953{
954 while (count--)
955 {
956 base->head = 0;
957 base->gotsig = 0;
958
959 ++base;
960 }
961}
962 1808
963/*****************************************************************************/ 1809/*****************************************************************************/
964 1810
965void inline_speed 1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
966fd_intern (int fd)
967{
968#ifdef _WIN32
969 int arg = 1;
970 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
971#else
972 fcntl (fd, F_SETFD, FD_CLOEXEC);
973 fcntl (fd, F_SETFL, O_NONBLOCK);
974#endif
975}
976 1812
977static void noinline 1813static void noinline ecb_cold
978evpipe_init (EV_P) 1814evpipe_init (EV_P)
979{ 1815{
980 if (!ev_is_active (&pipeev)) 1816 if (!ev_is_active (&pipe_w))
981 { 1817 {
982#if EV_USE_EVENTFD 1818# if EV_USE_EVENTFD
1819 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1820 if (evfd < 0 && errno == EINVAL)
983 if ((evfd = eventfd (0, 0)) >= 0) 1821 evfd = eventfd (0, 0);
1822
1823 if (evfd >= 0)
984 { 1824 {
985 evpipe [0] = -1; 1825 evpipe [0] = -1;
986 fd_intern (evfd); 1826 fd_intern (evfd); /* doing it twice doesn't hurt */
987 ev_io_set (&pipeev, evfd, EV_READ); 1827 ev_io_set (&pipe_w, evfd, EV_READ);
988 } 1828 }
989 else 1829 else
990#endif 1830# endif
991 { 1831 {
992 while (pipe (evpipe)) 1832 while (pipe (evpipe))
993 syserr ("(libev) error creating signal/async pipe"); 1833 ev_syserr ("(libev) error creating signal/async pipe");
994 1834
995 fd_intern (evpipe [0]); 1835 fd_intern (evpipe [0]);
996 fd_intern (evpipe [1]); 1836 fd_intern (evpipe [1]);
997 ev_io_set (&pipeev, evpipe [0], EV_READ); 1837 ev_io_set (&pipe_w, evpipe [0], EV_READ);
998 } 1838 }
999 1839
1000 ev_io_start (EV_A_ &pipeev); 1840 ev_io_start (EV_A_ &pipe_w);
1001 ev_unref (EV_A); /* watcher should not keep loop alive */ 1841 ev_unref (EV_A); /* watcher should not keep loop alive */
1002 } 1842 }
1003} 1843}
1004 1844
1005void inline_size 1845inline_speed void
1006evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1846evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1007{ 1847{
1008 if (!*flag) 1848 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1849
1850 if (expect_true (*flag))
1851 return;
1852
1853 *flag = 1;
1854
1855 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1856
1857 pipe_write_skipped = 1;
1858
1859 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1860
1861 if (pipe_write_wanted)
1009 { 1862 {
1863 int old_errno;
1864
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1866
1010 int old_errno = errno; /* save errno because write might clobber it */ 1867 old_errno = errno; /* save errno because write will clobber it */
1011
1012 *flag = 1;
1013 1868
1014#if EV_USE_EVENTFD 1869#if EV_USE_EVENTFD
1015 if (evfd >= 0) 1870 if (evfd >= 0)
1016 { 1871 {
1017 uint64_t counter = 1; 1872 uint64_t counter = 1;
1018 write (evfd, &counter, sizeof (uint64_t)); 1873 write (evfd, &counter, sizeof (uint64_t));
1019 } 1874 }
1020 else 1875 else
1021#endif 1876#endif
1877 {
1878#ifdef _WIN32
1879 WSABUF buf;
1880 DWORD sent;
1881 buf.buf = &buf;
1882 buf.len = 1;
1883 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1884#else
1022 write (evpipe [1], &old_errno, 1); 1885 write (evpipe [1], &(evpipe [1]), 1);
1886#endif
1887 }
1023 1888
1024 errno = old_errno; 1889 errno = old_errno;
1025 } 1890 }
1026} 1891}
1027 1892
1893/* called whenever the libev signal pipe */
1894/* got some events (signal, async) */
1028static void 1895static void
1029pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1030{ 1897{
1898 int i;
1899
1900 if (revents & EV_READ)
1901 {
1031#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1032 if (evfd >= 0) 1903 if (evfd >= 0)
1033 { 1904 {
1034 uint64_t counter; 1905 uint64_t counter;
1035 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1036 } 1907 }
1037 else 1908 else
1038#endif 1909#endif
1039 { 1910 {
1040 char dummy; 1911 char dummy[4];
1912#ifdef _WIN32
1913 WSABUF buf;
1914 DWORD recvd;
1915 buf.buf = dummy;
1916 buf.len = sizeof (dummy);
1917 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1918#else
1041 read (evpipe [0], &dummy, 1); 1919 read (evpipe [0], &dummy, sizeof (dummy));
1920#endif
1921 }
1922 }
1923
1924 pipe_write_skipped = 0;
1925
1926 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1927
1928#if EV_SIGNAL_ENABLE
1929 if (sig_pending)
1042 } 1930 {
1931 sig_pending = 0;
1043 1932
1044 if (gotsig && ev_is_default_loop (EV_A)) 1933 ECB_MEMORY_FENCE_RELEASE;
1045 {
1046 int signum;
1047 gotsig = 0;
1048 1934
1049 for (signum = signalmax; signum--; ) 1935 for (i = EV_NSIG - 1; i--; )
1050 if (signals [signum].gotsig) 1936 if (expect_false (signals [i].pending))
1051 ev_feed_signal_event (EV_A_ signum + 1); 1937 ev_feed_signal_event (EV_A_ i + 1);
1052 } 1938 }
1939#endif
1053 1940
1054#if EV_ASYNC_ENABLE 1941#if EV_ASYNC_ENABLE
1055 if (gotasync) 1942 if (async_pending)
1056 { 1943 {
1057 int i; 1944 async_pending = 0;
1058 gotasync = 0; 1945
1946 ECB_MEMORY_FENCE_RELEASE;
1059 1947
1060 for (i = asynccnt; i--; ) 1948 for (i = asynccnt; i--; )
1061 if (asyncs [i]->sent) 1949 if (asyncs [i]->sent)
1062 { 1950 {
1063 asyncs [i]->sent = 0; 1951 asyncs [i]->sent = 0;
… …
1067#endif 1955#endif
1068} 1956}
1069 1957
1070/*****************************************************************************/ 1958/*****************************************************************************/
1071 1959
1960void
1961ev_feed_signal (int signum) EV_THROW
1962{
1963#if EV_MULTIPLICITY
1964 EV_P = signals [signum - 1].loop;
1965
1966 if (!EV_A)
1967 return;
1968#endif
1969
1970 if (!ev_active (&pipe_w))
1971 return;
1972
1973 signals [signum - 1].pending = 1;
1974 evpipe_write (EV_A_ &sig_pending);
1975}
1976
1072static void 1977static void
1073ev_sighandler (int signum) 1978ev_sighandler (int signum)
1074{ 1979{
1980#ifdef _WIN32
1981 signal (signum, ev_sighandler);
1982#endif
1983
1984 ev_feed_signal (signum);
1985}
1986
1987void noinline
1988ev_feed_signal_event (EV_P_ int signum) EV_THROW
1989{
1990 WL w;
1991
1992 if (expect_false (signum <= 0 || signum > EV_NSIG))
1993 return;
1994
1995 --signum;
1996
1075#if EV_MULTIPLICITY 1997#if EV_MULTIPLICITY
1076 struct ev_loop *loop = &default_loop_struct; 1998 /* it is permissible to try to feed a signal to the wrong loop */
1077#endif 1999 /* or, likely more useful, feeding a signal nobody is waiting for */
1078 2000
1079#if _WIN32 2001 if (expect_false (signals [signum].loop != EV_A))
1080 signal (signum, ev_sighandler);
1081#endif
1082
1083 signals [signum - 1].gotsig = 1;
1084 evpipe_write (EV_A_ &gotsig);
1085}
1086
1087void noinline
1088ev_feed_signal_event (EV_P_ int signum)
1089{
1090 WL w;
1091
1092#if EV_MULTIPLICITY
1093 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1094#endif
1095
1096 --signum;
1097
1098 if (signum < 0 || signum >= signalmax)
1099 return; 2002 return;
2003#endif
1100 2004
1101 signals [signum].gotsig = 0; 2005 signals [signum].pending = 0;
1102 2006
1103 for (w = signals [signum].head; w; w = w->next) 2007 for (w = signals [signum].head; w; w = w->next)
1104 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2008 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1105} 2009}
1106 2010
2011#if EV_USE_SIGNALFD
2012static void
2013sigfdcb (EV_P_ ev_io *iow, int revents)
2014{
2015 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2016
2017 for (;;)
2018 {
2019 ssize_t res = read (sigfd, si, sizeof (si));
2020
2021 /* not ISO-C, as res might be -1, but works with SuS */
2022 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2023 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2024
2025 if (res < (ssize_t)sizeof (si))
2026 break;
2027 }
2028}
2029#endif
2030
2031#endif
2032
1107/*****************************************************************************/ 2033/*****************************************************************************/
1108 2034
2035#if EV_CHILD_ENABLE
1109static WL childs [EV_PID_HASHSIZE]; 2036static WL childs [EV_PID_HASHSIZE];
1110
1111#ifndef _WIN32
1112 2037
1113static ev_signal childev; 2038static ev_signal childev;
1114 2039
1115#ifndef WIFCONTINUED 2040#ifndef WIFCONTINUED
1116# define WIFCONTINUED(status) 0 2041# define WIFCONTINUED(status) 0
1117#endif 2042#endif
1118 2043
1119void inline_speed 2044/* handle a single child status event */
2045inline_speed void
1120child_reap (EV_P_ int chain, int pid, int status) 2046child_reap (EV_P_ int chain, int pid, int status)
1121{ 2047{
1122 ev_child *w; 2048 ev_child *w;
1123 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2049 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1124 2050
1125 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2051 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1126 { 2052 {
1127 if ((w->pid == pid || !w->pid) 2053 if ((w->pid == pid || !w->pid)
1128 && (!traced || (w->flags & 1))) 2054 && (!traced || (w->flags & 1)))
1129 { 2055 {
1130 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2056 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1137 2063
1138#ifndef WCONTINUED 2064#ifndef WCONTINUED
1139# define WCONTINUED 0 2065# define WCONTINUED 0
1140#endif 2066#endif
1141 2067
2068/* called on sigchld etc., calls waitpid */
1142static void 2069static void
1143childcb (EV_P_ ev_signal *sw, int revents) 2070childcb (EV_P_ ev_signal *sw, int revents)
1144{ 2071{
1145 int pid, status; 2072 int pid, status;
1146 2073
… …
1154 /* make sure we are called again until all children have been reaped */ 2081 /* make sure we are called again until all children have been reaped */
1155 /* we need to do it this way so that the callback gets called before we continue */ 2082 /* we need to do it this way so that the callback gets called before we continue */
1156 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2083 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1157 2084
1158 child_reap (EV_A_ pid, pid, status); 2085 child_reap (EV_A_ pid, pid, status);
1159 if (EV_PID_HASHSIZE > 1) 2086 if ((EV_PID_HASHSIZE) > 1)
1160 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2087 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1161} 2088}
1162 2089
1163#endif 2090#endif
1164 2091
1165/*****************************************************************************/ 2092/*****************************************************************************/
1166 2093
2094#if EV_USE_IOCP
2095# include "ev_iocp.c"
2096#endif
1167#if EV_USE_PORT 2097#if EV_USE_PORT
1168# include "ev_port.c" 2098# include "ev_port.c"
1169#endif 2099#endif
1170#if EV_USE_KQUEUE 2100#if EV_USE_KQUEUE
1171# include "ev_kqueue.c" 2101# include "ev_kqueue.c"
… …
1178#endif 2108#endif
1179#if EV_USE_SELECT 2109#if EV_USE_SELECT
1180# include "ev_select.c" 2110# include "ev_select.c"
1181#endif 2111#endif
1182 2112
1183int 2113int ecb_cold
1184ev_version_major (void) 2114ev_version_major (void) EV_THROW
1185{ 2115{
1186 return EV_VERSION_MAJOR; 2116 return EV_VERSION_MAJOR;
1187} 2117}
1188 2118
1189int 2119int ecb_cold
1190ev_version_minor (void) 2120ev_version_minor (void) EV_THROW
1191{ 2121{
1192 return EV_VERSION_MINOR; 2122 return EV_VERSION_MINOR;
1193} 2123}
1194 2124
1195/* return true if we are running with elevated privileges and should ignore env variables */ 2125/* return true if we are running with elevated privileges and should ignore env variables */
1196int inline_size 2126int inline_size ecb_cold
1197enable_secure (void) 2127enable_secure (void)
1198{ 2128{
1199#ifdef _WIN32 2129#ifdef _WIN32
1200 return 0; 2130 return 0;
1201#else 2131#else
1202 return getuid () != geteuid () 2132 return getuid () != geteuid ()
1203 || getgid () != getegid (); 2133 || getgid () != getegid ();
1204#endif 2134#endif
1205} 2135}
1206 2136
1207unsigned int 2137unsigned int ecb_cold
1208ev_supported_backends (void) 2138ev_supported_backends (void) EV_THROW
1209{ 2139{
1210 unsigned int flags = 0; 2140 unsigned int flags = 0;
1211 2141
1212 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2142 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1213 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2143 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1216 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2146 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1217 2147
1218 return flags; 2148 return flags;
1219} 2149}
1220 2150
1221unsigned int 2151unsigned int ecb_cold
1222ev_recommended_backends (void) 2152ev_recommended_backends (void) EV_THROW
1223{ 2153{
1224 unsigned int flags = ev_supported_backends (); 2154 unsigned int flags = ev_supported_backends ();
1225 2155
1226#ifndef __NetBSD__ 2156#ifndef __NetBSD__
1227 /* kqueue is borked on everything but netbsd apparently */ 2157 /* kqueue is borked on everything but netbsd apparently */
1228 /* it usually doesn't work correctly on anything but sockets and pipes */ 2158 /* it usually doesn't work correctly on anything but sockets and pipes */
1229 flags &= ~EVBACKEND_KQUEUE; 2159 flags &= ~EVBACKEND_KQUEUE;
1230#endif 2160#endif
1231#ifdef __APPLE__ 2161#ifdef __APPLE__
1232 // flags &= ~EVBACKEND_KQUEUE; for documentation 2162 /* only select works correctly on that "unix-certified" platform */
1233 flags &= ~EVBACKEND_POLL; 2163 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2164 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2165#endif
2166#ifdef __FreeBSD__
2167 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1234#endif 2168#endif
1235 2169
1236 return flags; 2170 return flags;
1237} 2171}
1238 2172
2173unsigned int ecb_cold
2174ev_embeddable_backends (void) EV_THROW
2175{
2176 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2177
2178 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2179 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2180 flags &= ~EVBACKEND_EPOLL;
2181
2182 return flags;
2183}
2184
1239unsigned int 2185unsigned int
1240ev_embeddable_backends (void) 2186ev_backend (EV_P) EV_THROW
1241{ 2187{
1242 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2188 return backend;
1243
1244 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1245 /* please fix it and tell me how to detect the fix */
1246 flags &= ~EVBACKEND_EPOLL;
1247
1248 return flags;
1249} 2189}
1250 2190
2191#if EV_FEATURE_API
1251unsigned int 2192unsigned int
1252ev_backend (EV_P) 2193ev_iteration (EV_P) EV_THROW
1253{ 2194{
1254 return backend; 2195 return loop_count;
1255} 2196}
1256 2197
1257unsigned int 2198unsigned int
1258ev_loop_count (EV_P) 2199ev_depth (EV_P) EV_THROW
1259{ 2200{
1260 return loop_count; 2201 return loop_depth;
1261} 2202}
1262 2203
1263void 2204void
1264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2205ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1265{ 2206{
1266 io_blocktime = interval; 2207 io_blocktime = interval;
1267} 2208}
1268 2209
1269void 2210void
1270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2211ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1271{ 2212{
1272 timeout_blocktime = interval; 2213 timeout_blocktime = interval;
1273} 2214}
1274 2215
2216void
2217ev_set_userdata (EV_P_ void *data) EV_THROW
2218{
2219 userdata = data;
2220}
2221
2222void *
2223ev_userdata (EV_P) EV_THROW
2224{
2225 return userdata;
2226}
2227
2228void
2229ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2230{
2231 invoke_cb = invoke_pending_cb;
2232}
2233
2234void
2235ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2236{
2237 release_cb = release;
2238 acquire_cb = acquire;
2239}
2240#endif
2241
2242/* initialise a loop structure, must be zero-initialised */
1275static void noinline 2243static void noinline ecb_cold
1276loop_init (EV_P_ unsigned int flags) 2244loop_init (EV_P_ unsigned int flags) EV_THROW
1277{ 2245{
1278 if (!backend) 2246 if (!backend)
1279 { 2247 {
2248 origflags = flags;
2249
2250#if EV_USE_REALTIME
2251 if (!have_realtime)
2252 {
2253 struct timespec ts;
2254
2255 if (!clock_gettime (CLOCK_REALTIME, &ts))
2256 have_realtime = 1;
2257 }
2258#endif
2259
1280#if EV_USE_MONOTONIC 2260#if EV_USE_MONOTONIC
2261 if (!have_monotonic)
1281 { 2262 {
1282 struct timespec ts; 2263 struct timespec ts;
2264
1283 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2265 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1284 have_monotonic = 1; 2266 have_monotonic = 1;
1285 } 2267 }
1286#endif
1287
1288 ev_rt_now = ev_time ();
1289 mn_now = get_clock ();
1290 now_floor = mn_now;
1291 rtmn_diff = ev_rt_now - mn_now;
1292
1293 io_blocktime = 0.;
1294 timeout_blocktime = 0.;
1295 backend = 0;
1296 backend_fd = -1;
1297 gotasync = 0;
1298#if EV_USE_INOTIFY
1299 fs_fd = -2;
1300#endif 2268#endif
1301 2269
1302 /* pid check not overridable via env */ 2270 /* pid check not overridable via env */
1303#ifndef _WIN32 2271#ifndef _WIN32
1304 if (flags & EVFLAG_FORKCHECK) 2272 if (flags & EVFLAG_FORKCHECK)
… …
1308 if (!(flags & EVFLAG_NOENV) 2276 if (!(flags & EVFLAG_NOENV)
1309 && !enable_secure () 2277 && !enable_secure ()
1310 && getenv ("LIBEV_FLAGS")) 2278 && getenv ("LIBEV_FLAGS"))
1311 flags = atoi (getenv ("LIBEV_FLAGS")); 2279 flags = atoi (getenv ("LIBEV_FLAGS"));
1312 2280
1313 if (!(flags & 0x0000ffffU)) 2281 ev_rt_now = ev_time ();
2282 mn_now = get_clock ();
2283 now_floor = mn_now;
2284 rtmn_diff = ev_rt_now - mn_now;
2285#if EV_FEATURE_API
2286 invoke_cb = ev_invoke_pending;
2287#endif
2288
2289 io_blocktime = 0.;
2290 timeout_blocktime = 0.;
2291 backend = 0;
2292 backend_fd = -1;
2293 sig_pending = 0;
2294#if EV_ASYNC_ENABLE
2295 async_pending = 0;
2296#endif
2297 pipe_write_skipped = 0;
2298 pipe_write_wanted = 0;
2299#if EV_USE_INOTIFY
2300 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2301#endif
2302#if EV_USE_SIGNALFD
2303 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2304#endif
2305
2306 if (!(flags & EVBACKEND_MASK))
1314 flags |= ev_recommended_backends (); 2307 flags |= ev_recommended_backends ();
1315 2308
2309#if EV_USE_IOCP
2310 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2311#endif
1316#if EV_USE_PORT 2312#if EV_USE_PORT
1317 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2313 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1318#endif 2314#endif
1319#if EV_USE_KQUEUE 2315#if EV_USE_KQUEUE
1320 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2316 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1327#endif 2323#endif
1328#if EV_USE_SELECT 2324#if EV_USE_SELECT
1329 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2325 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1330#endif 2326#endif
1331 2327
2328 ev_prepare_init (&pending_w, pendingcb);
2329
2330#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1332 ev_init (&pipeev, pipecb); 2331 ev_init (&pipe_w, pipecb);
1333 ev_set_priority (&pipeev, EV_MAXPRI); 2332 ev_set_priority (&pipe_w, EV_MAXPRI);
2333#endif
1334 } 2334 }
1335} 2335}
1336 2336
1337static void noinline 2337/* free up a loop structure */
2338void ecb_cold
1338loop_destroy (EV_P) 2339ev_loop_destroy (EV_P)
1339{ 2340{
1340 int i; 2341 int i;
1341 2342
2343#if EV_MULTIPLICITY
2344 /* mimic free (0) */
2345 if (!EV_A)
2346 return;
2347#endif
2348
2349#if EV_CLEANUP_ENABLE
2350 /* queue cleanup watchers (and execute them) */
2351 if (expect_false (cleanupcnt))
2352 {
2353 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2354 EV_INVOKE_PENDING;
2355 }
2356#endif
2357
2358#if EV_CHILD_ENABLE
2359 if (ev_is_active (&childev))
2360 {
2361 ev_ref (EV_A); /* child watcher */
2362 ev_signal_stop (EV_A_ &childev);
2363 }
2364#endif
2365
1342 if (ev_is_active (&pipeev)) 2366 if (ev_is_active (&pipe_w))
1343 { 2367 {
1344 ev_ref (EV_A); /* signal watcher */ 2368 /*ev_ref (EV_A);*/
1345 ev_io_stop (EV_A_ &pipeev); 2369 /*ev_io_stop (EV_A_ &pipe_w);*/
1346 2370
1347#if EV_USE_EVENTFD 2371#if EV_USE_EVENTFD
1348 if (evfd >= 0) 2372 if (evfd >= 0)
1349 close (evfd); 2373 close (evfd);
1350#endif 2374#endif
1351 2375
1352 if (evpipe [0] >= 0) 2376 if (evpipe [0] >= 0)
1353 { 2377 {
1354 close (evpipe [0]); 2378 EV_WIN32_CLOSE_FD (evpipe [0]);
1355 close (evpipe [1]); 2379 EV_WIN32_CLOSE_FD (evpipe [1]);
1356 } 2380 }
1357 } 2381 }
2382
2383#if EV_USE_SIGNALFD
2384 if (ev_is_active (&sigfd_w))
2385 close (sigfd);
2386#endif
1358 2387
1359#if EV_USE_INOTIFY 2388#if EV_USE_INOTIFY
1360 if (fs_fd >= 0) 2389 if (fs_fd >= 0)
1361 close (fs_fd); 2390 close (fs_fd);
1362#endif 2391#endif
1363 2392
1364 if (backend_fd >= 0) 2393 if (backend_fd >= 0)
1365 close (backend_fd); 2394 close (backend_fd);
1366 2395
2396#if EV_USE_IOCP
2397 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2398#endif
1367#if EV_USE_PORT 2399#if EV_USE_PORT
1368 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2400 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1369#endif 2401#endif
1370#if EV_USE_KQUEUE 2402#if EV_USE_KQUEUE
1371 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2403 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1386#if EV_IDLE_ENABLE 2418#if EV_IDLE_ENABLE
1387 array_free (idle, [i]); 2419 array_free (idle, [i]);
1388#endif 2420#endif
1389 } 2421 }
1390 2422
1391 ev_free (anfds); anfdmax = 0; 2423 ev_free (anfds); anfds = 0; anfdmax = 0;
1392 2424
1393 /* have to use the microsoft-never-gets-it-right macro */ 2425 /* have to use the microsoft-never-gets-it-right macro */
2426 array_free (rfeed, EMPTY);
1394 array_free (fdchange, EMPTY); 2427 array_free (fdchange, EMPTY);
1395 array_free (timer, EMPTY); 2428 array_free (timer, EMPTY);
1396#if EV_PERIODIC_ENABLE 2429#if EV_PERIODIC_ENABLE
1397 array_free (periodic, EMPTY); 2430 array_free (periodic, EMPTY);
1398#endif 2431#endif
1399#if EV_FORK_ENABLE 2432#if EV_FORK_ENABLE
1400 array_free (fork, EMPTY); 2433 array_free (fork, EMPTY);
1401#endif 2434#endif
2435#if EV_CLEANUP_ENABLE
2436 array_free (cleanup, EMPTY);
2437#endif
1402 array_free (prepare, EMPTY); 2438 array_free (prepare, EMPTY);
1403 array_free (check, EMPTY); 2439 array_free (check, EMPTY);
1404#if EV_ASYNC_ENABLE 2440#if EV_ASYNC_ENABLE
1405 array_free (async, EMPTY); 2441 array_free (async, EMPTY);
1406#endif 2442#endif
1407 2443
1408 backend = 0; 2444 backend = 0;
2445
2446#if EV_MULTIPLICITY
2447 if (ev_is_default_loop (EV_A))
2448#endif
2449 ev_default_loop_ptr = 0;
2450#if EV_MULTIPLICITY
2451 else
2452 ev_free (EV_A);
2453#endif
1409} 2454}
1410 2455
1411#if EV_USE_INOTIFY 2456#if EV_USE_INOTIFY
1412void inline_size infy_fork (EV_P); 2457inline_size void infy_fork (EV_P);
1413#endif 2458#endif
1414 2459
1415void inline_size 2460inline_size void
1416loop_fork (EV_P) 2461loop_fork (EV_P)
1417{ 2462{
1418#if EV_USE_PORT 2463#if EV_USE_PORT
1419 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2464 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1420#endif 2465#endif
… …
1426#endif 2471#endif
1427#if EV_USE_INOTIFY 2472#if EV_USE_INOTIFY
1428 infy_fork (EV_A); 2473 infy_fork (EV_A);
1429#endif 2474#endif
1430 2475
1431 if (ev_is_active (&pipeev)) 2476 if (ev_is_active (&pipe_w))
1432 { 2477 {
1433 /* this "locks" the handlers against writing to the pipe */ 2478 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1434 /* while we modify the fd vars */
1435 gotsig = 1;
1436#if EV_ASYNC_ENABLE
1437 gotasync = 1;
1438#endif
1439 2479
1440 ev_ref (EV_A); 2480 ev_ref (EV_A);
1441 ev_io_stop (EV_A_ &pipeev); 2481 ev_io_stop (EV_A_ &pipe_w);
1442 2482
1443#if EV_USE_EVENTFD 2483#if EV_USE_EVENTFD
1444 if (evfd >= 0) 2484 if (evfd >= 0)
1445 close (evfd); 2485 close (evfd);
1446#endif 2486#endif
1447 2487
1448 if (evpipe [0] >= 0) 2488 if (evpipe [0] >= 0)
1449 { 2489 {
1450 close (evpipe [0]); 2490 EV_WIN32_CLOSE_FD (evpipe [0]);
1451 close (evpipe [1]); 2491 EV_WIN32_CLOSE_FD (evpipe [1]);
1452 } 2492 }
1453 2493
2494#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1454 evpipe_init (EV_A); 2495 evpipe_init (EV_A);
1455 /* now iterate over everything, in case we missed something */ 2496 /* now iterate over everything, in case we missed something */
1456 pipecb (EV_A_ &pipeev, EV_READ); 2497 pipecb (EV_A_ &pipe_w, EV_READ);
2498#endif
1457 } 2499 }
1458 2500
1459 postfork = 0; 2501 postfork = 0;
1460} 2502}
1461 2503
1462#if EV_MULTIPLICITY 2504#if EV_MULTIPLICITY
2505
1463struct ev_loop * 2506struct ev_loop * ecb_cold
1464ev_loop_new (unsigned int flags) 2507ev_loop_new (unsigned int flags) EV_THROW
1465{ 2508{
1466 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2509 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1467 2510
1468 memset (loop, 0, sizeof (struct ev_loop)); 2511 memset (EV_A, 0, sizeof (struct ev_loop));
1469
1470 loop_init (EV_A_ flags); 2512 loop_init (EV_A_ flags);
1471 2513
1472 if (ev_backend (EV_A)) 2514 if (ev_backend (EV_A))
1473 return loop; 2515 return EV_A;
1474 2516
2517 ev_free (EV_A);
1475 return 0; 2518 return 0;
1476} 2519}
1477 2520
1478void 2521#endif /* multiplicity */
1479ev_loop_destroy (EV_P)
1480{
1481 loop_destroy (EV_A);
1482 ev_free (loop);
1483}
1484 2522
1485void 2523#if EV_VERIFY
1486ev_loop_fork (EV_P) 2524static void noinline ecb_cold
2525verify_watcher (EV_P_ W w)
1487{ 2526{
1488 postfork = 1; /* must be in line with ev_default_fork */ 2527 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2528
2529 if (w->pending)
2530 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2531}
2532
2533static void noinline ecb_cold
2534verify_heap (EV_P_ ANHE *heap, int N)
2535{
2536 int i;
2537
2538 for (i = HEAP0; i < N + HEAP0; ++i)
2539 {
2540 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2541 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2542 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2543
2544 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2545 }
2546}
2547
2548static void noinline ecb_cold
2549array_verify (EV_P_ W *ws, int cnt)
2550{
2551 while (cnt--)
2552 {
2553 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2554 verify_watcher (EV_A_ ws [cnt]);
2555 }
2556}
2557#endif
2558
2559#if EV_FEATURE_API
2560void ecb_cold
2561ev_verify (EV_P) EV_THROW
2562{
2563#if EV_VERIFY
2564 int i;
2565 WL w, w2;
2566
2567 assert (activecnt >= -1);
2568
2569 assert (fdchangemax >= fdchangecnt);
2570 for (i = 0; i < fdchangecnt; ++i)
2571 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2572
2573 assert (anfdmax >= 0);
2574 for (i = 0; i < anfdmax; ++i)
2575 {
2576 int j = 0;
2577
2578 for (w = w2 = anfds [i].head; w; w = w->next)
2579 {
2580 verify_watcher (EV_A_ (W)w);
2581
2582 if (j++ & 1)
2583 {
2584 assert (("libev: io watcher list contains a loop", w != w2));
2585 w2 = w2->next;
2586 }
2587
2588 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2589 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2590 }
2591 }
2592
2593 assert (timermax >= timercnt);
2594 verify_heap (EV_A_ timers, timercnt);
2595
2596#if EV_PERIODIC_ENABLE
2597 assert (periodicmax >= periodiccnt);
2598 verify_heap (EV_A_ periodics, periodiccnt);
2599#endif
2600
2601 for (i = NUMPRI; i--; )
2602 {
2603 assert (pendingmax [i] >= pendingcnt [i]);
2604#if EV_IDLE_ENABLE
2605 assert (idleall >= 0);
2606 assert (idlemax [i] >= idlecnt [i]);
2607 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2608#endif
2609 }
2610
2611#if EV_FORK_ENABLE
2612 assert (forkmax >= forkcnt);
2613 array_verify (EV_A_ (W *)forks, forkcnt);
2614#endif
2615
2616#if EV_CLEANUP_ENABLE
2617 assert (cleanupmax >= cleanupcnt);
2618 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2619#endif
2620
2621#if EV_ASYNC_ENABLE
2622 assert (asyncmax >= asynccnt);
2623 array_verify (EV_A_ (W *)asyncs, asynccnt);
2624#endif
2625
2626#if EV_PREPARE_ENABLE
2627 assert (preparemax >= preparecnt);
2628 array_verify (EV_A_ (W *)prepares, preparecnt);
2629#endif
2630
2631#if EV_CHECK_ENABLE
2632 assert (checkmax >= checkcnt);
2633 array_verify (EV_A_ (W *)checks, checkcnt);
2634#endif
2635
2636# if 0
2637#if EV_CHILD_ENABLE
2638 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2639 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2640#endif
2641# endif
2642#endif
1489} 2643}
1490#endif 2644#endif
1491 2645
1492#if EV_MULTIPLICITY 2646#if EV_MULTIPLICITY
1493struct ev_loop * 2647struct ev_loop * ecb_cold
1494ev_default_loop_init (unsigned int flags)
1495#else 2648#else
1496int 2649int
2650#endif
1497ev_default_loop (unsigned int flags) 2651ev_default_loop (unsigned int flags) EV_THROW
1498#endif
1499{ 2652{
1500 if (!ev_default_loop_ptr) 2653 if (!ev_default_loop_ptr)
1501 { 2654 {
1502#if EV_MULTIPLICITY 2655#if EV_MULTIPLICITY
1503 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2656 EV_P = ev_default_loop_ptr = &default_loop_struct;
1504#else 2657#else
1505 ev_default_loop_ptr = 1; 2658 ev_default_loop_ptr = 1;
1506#endif 2659#endif
1507 2660
1508 loop_init (EV_A_ flags); 2661 loop_init (EV_A_ flags);
1509 2662
1510 if (ev_backend (EV_A)) 2663 if (ev_backend (EV_A))
1511 { 2664 {
1512#ifndef _WIN32 2665#if EV_CHILD_ENABLE
1513 ev_signal_init (&childev, childcb, SIGCHLD); 2666 ev_signal_init (&childev, childcb, SIGCHLD);
1514 ev_set_priority (&childev, EV_MAXPRI); 2667 ev_set_priority (&childev, EV_MAXPRI);
1515 ev_signal_start (EV_A_ &childev); 2668 ev_signal_start (EV_A_ &childev);
1516 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2669 ev_unref (EV_A); /* child watcher should not keep loop alive */
1517#endif 2670#endif
… …
1522 2675
1523 return ev_default_loop_ptr; 2676 return ev_default_loop_ptr;
1524} 2677}
1525 2678
1526void 2679void
1527ev_default_destroy (void) 2680ev_loop_fork (EV_P) EV_THROW
1528{ 2681{
1529#if EV_MULTIPLICITY
1530 struct ev_loop *loop = ev_default_loop_ptr;
1531#endif
1532
1533#ifndef _WIN32
1534 ev_ref (EV_A); /* child watcher */
1535 ev_signal_stop (EV_A_ &childev);
1536#endif
1537
1538 loop_destroy (EV_A);
1539}
1540
1541void
1542ev_default_fork (void)
1543{
1544#if EV_MULTIPLICITY
1545 struct ev_loop *loop = ev_default_loop_ptr;
1546#endif
1547
1548 if (backend)
1549 postfork = 1; /* must be in line with ev_loop_fork */ 2682 postfork = 1; /* must be in line with ev_default_fork */
1550} 2683}
1551 2684
1552/*****************************************************************************/ 2685/*****************************************************************************/
1553 2686
1554void 2687void
1555ev_invoke (EV_P_ void *w, int revents) 2688ev_invoke (EV_P_ void *w, int revents)
1556{ 2689{
1557 EV_CB_INVOKE ((W)w, revents); 2690 EV_CB_INVOKE ((W)w, revents);
1558} 2691}
1559 2692
1560void inline_speed 2693unsigned int
1561call_pending (EV_P) 2694ev_pending_count (EV_P) EV_THROW
1562{ 2695{
1563 int pri; 2696 int pri;
2697 unsigned int count = 0;
1564 2698
1565 for (pri = NUMPRI; pri--; ) 2699 for (pri = NUMPRI; pri--; )
2700 count += pendingcnt [pri];
2701
2702 return count;
2703}
2704
2705void noinline
2706ev_invoke_pending (EV_P)
2707{
2708 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1566 while (pendingcnt [pri]) 2709 while (pendingcnt [pendingpri])
1567 { 2710 {
1568 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2711 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1569 2712
1570 if (expect_true (p->w))
1571 {
1572 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1573
1574 p->w->pending = 0; 2713 p->w->pending = 0;
1575 EV_CB_INVOKE (p->w, p->events); 2714 EV_CB_INVOKE (p->w, p->events);
1576 } 2715 EV_FREQUENT_CHECK;
1577 } 2716 }
1578} 2717}
1579 2718
1580#if EV_IDLE_ENABLE 2719#if EV_IDLE_ENABLE
1581void inline_size 2720/* make idle watchers pending. this handles the "call-idle */
2721/* only when higher priorities are idle" logic */
2722inline_size void
1582idle_reify (EV_P) 2723idle_reify (EV_P)
1583{ 2724{
1584 if (expect_false (idleall)) 2725 if (expect_false (idleall))
1585 { 2726 {
1586 int pri; 2727 int pri;
… …
1598 } 2739 }
1599 } 2740 }
1600} 2741}
1601#endif 2742#endif
1602 2743
1603void inline_size 2744/* make timers pending */
2745inline_size void
1604timers_reify (EV_P) 2746timers_reify (EV_P)
1605{ 2747{
2748 EV_FREQUENT_CHECK;
2749
1606 while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now) 2750 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1607 { 2751 {
1608 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2752 do
1609
1610 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1611
1612 /* first reschedule or stop timer */
1613 if (w->repeat)
1614 { 2753 {
2754 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2755
2756 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2757
2758 /* first reschedule or stop timer */
2759 if (w->repeat)
2760 {
1615 ev_at (w) += w->repeat; 2761 ev_at (w) += w->repeat;
1616 if (ev_at (w) < mn_now) 2762 if (ev_at (w) < mn_now)
1617 ev_at (w) = mn_now; 2763 ev_at (w) = mn_now;
1618 2764
1619 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2765 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1620 2766
1621 ANHE_at_set (timers [HEAP0]); 2767 ANHE_at_cache (timers [HEAP0]);
1622 downheap (timers, timercnt, HEAP0); 2768 downheap (timers, timercnt, HEAP0);
2769 }
2770 else
2771 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2772
2773 EV_FREQUENT_CHECK;
2774 feed_reverse (EV_A_ (W)w);
1623 } 2775 }
1624 else 2776 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1625 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1626 2777
1627 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2778 feed_reverse_done (EV_A_ EV_TIMER);
1628 } 2779 }
1629} 2780}
1630 2781
1631#if EV_PERIODIC_ENABLE 2782#if EV_PERIODIC_ENABLE
1632void inline_size 2783
2784static void noinline
2785periodic_recalc (EV_P_ ev_periodic *w)
2786{
2787 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2788 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2789
2790 /* the above almost always errs on the low side */
2791 while (at <= ev_rt_now)
2792 {
2793 ev_tstamp nat = at + w->interval;
2794
2795 /* when resolution fails us, we use ev_rt_now */
2796 if (expect_false (nat == at))
2797 {
2798 at = ev_rt_now;
2799 break;
2800 }
2801
2802 at = nat;
2803 }
2804
2805 ev_at (w) = at;
2806}
2807
2808/* make periodics pending */
2809inline_size void
1633periodics_reify (EV_P) 2810periodics_reify (EV_P)
1634{ 2811{
2812 EV_FREQUENT_CHECK;
2813
1635 while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now) 2814 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1636 { 2815 {
1637 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2816 int feed_count = 0;
1638 2817
1639 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2818 do
1640
1641 /* first reschedule or stop timer */
1642 if (w->reschedule_cb)
1643 { 2819 {
2820 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2821
2822 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2823
2824 /* first reschedule or stop timer */
2825 if (w->reschedule_cb)
2826 {
1644 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 2827 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1645 2828
1646 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); 2829 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1647 2830
1648 ANHE_at_set (periodics [HEAP0]); 2831 ANHE_at_cache (periodics [HEAP0]);
1649 downheap (periodics, periodiccnt, HEAP0); 2832 downheap (periodics, periodiccnt, HEAP0);
2833 }
2834 else if (w->interval)
2835 {
2836 periodic_recalc (EV_A_ w);
2837 ANHE_at_cache (periodics [HEAP0]);
2838 downheap (periodics, periodiccnt, HEAP0);
2839 }
2840 else
2841 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2842
2843 EV_FREQUENT_CHECK;
2844 feed_reverse (EV_A_ (W)w);
1650 } 2845 }
1651 else if (w->interval) 2846 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1652 {
1653 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1654 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1655 2847
1656 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1657
1658 ANHE_at_set (periodics [HEAP0]);
1659 downheap (periodics, periodiccnt, HEAP0);
1660 }
1661 else
1662 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1663
1664 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2848 feed_reverse_done (EV_A_ EV_PERIODIC);
1665 } 2849 }
1666} 2850}
1667 2851
2852/* simply recalculate all periodics */
2853/* TODO: maybe ensure that at least one event happens when jumping forward? */
1668static void noinline 2854static void noinline ecb_cold
1669periodics_reschedule (EV_P) 2855periodics_reschedule (EV_P)
1670{ 2856{
1671 int i; 2857 int i;
1672 2858
1673 /* adjust periodics after time jump */ 2859 /* adjust periodics after time jump */
… …
1676 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2862 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1677 2863
1678 if (w->reschedule_cb) 2864 if (w->reschedule_cb)
1679 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2865 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1680 else if (w->interval) 2866 else if (w->interval)
1681 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2867 periodic_recalc (EV_A_ w);
1682 2868
1683 ANHE_at_set (periodics [i]); 2869 ANHE_at_cache (periodics [i]);
1684 } 2870 }
1685 2871
1686 /* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */ 2872 reheap (periodics, periodiccnt);
1687 /* also, this is easy and corretc for both 2-heaps and 4-heaps */ 2873}
2874#endif
2875
2876/* adjust all timers by a given offset */
2877static void noinline ecb_cold
2878timers_reschedule (EV_P_ ev_tstamp adjust)
2879{
2880 int i;
2881
1688 for (i = 0; i < periodiccnt; ++i) 2882 for (i = 0; i < timercnt; ++i)
1689 upheap (periodics, i + HEAP0); 2883 {
2884 ANHE *he = timers + i + HEAP0;
2885 ANHE_w (*he)->at += adjust;
2886 ANHE_at_cache (*he);
2887 }
1690} 2888}
1691#endif
1692 2889
1693void inline_speed 2890/* fetch new monotonic and realtime times from the kernel */
2891/* also detect if there was a timejump, and act accordingly */
2892inline_speed void
1694time_update (EV_P_ ev_tstamp max_block) 2893time_update (EV_P_ ev_tstamp max_block)
1695{ 2894{
1696 int i;
1697
1698#if EV_USE_MONOTONIC 2895#if EV_USE_MONOTONIC
1699 if (expect_true (have_monotonic)) 2896 if (expect_true (have_monotonic))
1700 { 2897 {
2898 int i;
1701 ev_tstamp odiff = rtmn_diff; 2899 ev_tstamp odiff = rtmn_diff;
1702 2900
1703 mn_now = get_clock (); 2901 mn_now = get_clock ();
1704 2902
1705 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2903 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1721 * doesn't hurt either as we only do this on time-jumps or 2919 * doesn't hurt either as we only do this on time-jumps or
1722 * in the unlikely event of having been preempted here. 2920 * in the unlikely event of having been preempted here.
1723 */ 2921 */
1724 for (i = 4; --i; ) 2922 for (i = 4; --i; )
1725 { 2923 {
2924 ev_tstamp diff;
1726 rtmn_diff = ev_rt_now - mn_now; 2925 rtmn_diff = ev_rt_now - mn_now;
1727 2926
2927 diff = odiff - rtmn_diff;
2928
1728 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2929 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1729 return; /* all is well */ 2930 return; /* all is well */
1730 2931
1731 ev_rt_now = ev_time (); 2932 ev_rt_now = ev_time ();
1732 mn_now = get_clock (); 2933 mn_now = get_clock ();
1733 now_floor = mn_now; 2934 now_floor = mn_now;
1734 } 2935 }
1735 2936
2937 /* no timer adjustment, as the monotonic clock doesn't jump */
2938 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1736# if EV_PERIODIC_ENABLE 2939# if EV_PERIODIC_ENABLE
1737 periodics_reschedule (EV_A); 2940 periodics_reschedule (EV_A);
1738# endif 2941# endif
1739 /* no timer adjustment, as the monotonic clock doesn't jump */
1740 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1741 } 2942 }
1742 else 2943 else
1743#endif 2944#endif
1744 { 2945 {
1745 ev_rt_now = ev_time (); 2946 ev_rt_now = ev_time ();
1746 2947
1747 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2948 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1748 { 2949 {
2950 /* adjust timers. this is easy, as the offset is the same for all of them */
2951 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1749#if EV_PERIODIC_ENABLE 2952#if EV_PERIODIC_ENABLE
1750 periodics_reschedule (EV_A); 2953 periodics_reschedule (EV_A);
1751#endif 2954#endif
1752 /* adjust timers. this is easy, as the offset is the same for all of them */
1753 for (i = 0; i < timercnt; ++i)
1754 {
1755 ANHE *he = timers + i + HEAP0;
1756 ANHE_w (*he)->at += ev_rt_now - mn_now;
1757 ANHE_at_set (*he);
1758 }
1759 } 2955 }
1760 2956
1761 mn_now = ev_rt_now; 2957 mn_now = ev_rt_now;
1762 } 2958 }
1763} 2959}
1764 2960
1765void 2961int
1766ev_ref (EV_P)
1767{
1768 ++activecnt;
1769}
1770
1771void
1772ev_unref (EV_P)
1773{
1774 --activecnt;
1775}
1776
1777static int loop_done;
1778
1779void
1780ev_loop (EV_P_ int flags) 2962ev_run (EV_P_ int flags)
1781{ 2963{
2964#if EV_FEATURE_API
2965 ++loop_depth;
2966#endif
2967
2968 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2969
1782 loop_done = EVUNLOOP_CANCEL; 2970 loop_done = EVBREAK_CANCEL;
1783 2971
1784 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2972 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1785 2973
1786 do 2974 do
1787 { 2975 {
2976#if EV_VERIFY >= 2
2977 ev_verify (EV_A);
2978#endif
2979
1788#ifndef _WIN32 2980#ifndef _WIN32
1789 if (expect_false (curpid)) /* penalise the forking check even more */ 2981 if (expect_false (curpid)) /* penalise the forking check even more */
1790 if (expect_false (getpid () != curpid)) 2982 if (expect_false (getpid () != curpid))
1791 { 2983 {
1792 curpid = getpid (); 2984 curpid = getpid ();
… …
1798 /* we might have forked, so queue fork handlers */ 2990 /* we might have forked, so queue fork handlers */
1799 if (expect_false (postfork)) 2991 if (expect_false (postfork))
1800 if (forkcnt) 2992 if (forkcnt)
1801 { 2993 {
1802 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2994 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1803 call_pending (EV_A); 2995 EV_INVOKE_PENDING;
1804 } 2996 }
1805#endif 2997#endif
1806 2998
2999#if EV_PREPARE_ENABLE
1807 /* queue prepare watchers (and execute them) */ 3000 /* queue prepare watchers (and execute them) */
1808 if (expect_false (preparecnt)) 3001 if (expect_false (preparecnt))
1809 { 3002 {
1810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3003 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1811 call_pending (EV_A); 3004 EV_INVOKE_PENDING;
1812 } 3005 }
3006#endif
1813 3007
1814 if (expect_false (!activecnt)) 3008 if (expect_false (loop_done))
1815 break; 3009 break;
1816 3010
1817 /* we might have forked, so reify kernel state if necessary */ 3011 /* we might have forked, so reify kernel state if necessary */
1818 if (expect_false (postfork)) 3012 if (expect_false (postfork))
1819 loop_fork (EV_A); 3013 loop_fork (EV_A);
… …
1824 /* calculate blocking time */ 3018 /* calculate blocking time */
1825 { 3019 {
1826 ev_tstamp waittime = 0.; 3020 ev_tstamp waittime = 0.;
1827 ev_tstamp sleeptime = 0.; 3021 ev_tstamp sleeptime = 0.;
1828 3022
3023 /* remember old timestamp for io_blocktime calculation */
3024 ev_tstamp prev_mn_now = mn_now;
3025
3026 /* update time to cancel out callback processing overhead */
3027 time_update (EV_A_ 1e100);
3028
3029 /* from now on, we want a pipe-wake-up */
3030 pipe_write_wanted = 1;
3031
3032 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3033
1829 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3034 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1830 { 3035 {
1831 /* update time to cancel out callback processing overhead */
1832 time_update (EV_A_ 1e100);
1833
1834 waittime = MAX_BLOCKTIME; 3036 waittime = MAX_BLOCKTIME;
1835 3037
1836 if (timercnt) 3038 if (timercnt)
1837 { 3039 {
1838 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3040 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1839 if (waittime > to) waittime = to; 3041 if (waittime > to) waittime = to;
1840 } 3042 }
1841 3043
1842#if EV_PERIODIC_ENABLE 3044#if EV_PERIODIC_ENABLE
1843 if (periodiccnt) 3045 if (periodiccnt)
1844 { 3046 {
1845 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3047 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1846 if (waittime > to) waittime = to; 3048 if (waittime > to) waittime = to;
1847 } 3049 }
1848#endif 3050#endif
1849 3051
3052 /* don't let timeouts decrease the waittime below timeout_blocktime */
1850 if (expect_false (waittime < timeout_blocktime)) 3053 if (expect_false (waittime < timeout_blocktime))
1851 waittime = timeout_blocktime; 3054 waittime = timeout_blocktime;
1852 3055
1853 sleeptime = waittime - backend_fudge; 3056 /* at this point, we NEED to wait, so we have to ensure */
3057 /* to pass a minimum nonzero value to the backend */
3058 if (expect_false (waittime < backend_mintime))
3059 waittime = backend_mintime;
1854 3060
3061 /* extra check because io_blocktime is commonly 0 */
1855 if (expect_true (sleeptime > io_blocktime)) 3062 if (expect_false (io_blocktime))
1856 sleeptime = io_blocktime;
1857
1858 if (sleeptime)
1859 { 3063 {
3064 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3065
3066 if (sleeptime > waittime - backend_mintime)
3067 sleeptime = waittime - backend_mintime;
3068
3069 if (expect_true (sleeptime > 0.))
3070 {
1860 ev_sleep (sleeptime); 3071 ev_sleep (sleeptime);
1861 waittime -= sleeptime; 3072 waittime -= sleeptime;
3073 }
1862 } 3074 }
1863 } 3075 }
1864 3076
3077#if EV_FEATURE_API
1865 ++loop_count; 3078 ++loop_count;
3079#endif
3080 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1866 backend_poll (EV_A_ waittime); 3081 backend_poll (EV_A_ waittime);
3082 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3083
3084 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3085
3086 if (pipe_write_skipped)
3087 {
3088 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3089 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3090 }
3091
1867 3092
1868 /* update ev_rt_now, do magic */ 3093 /* update ev_rt_now, do magic */
1869 time_update (EV_A_ waittime + sleeptime); 3094 time_update (EV_A_ waittime + sleeptime);
1870 } 3095 }
1871 3096
… …
1878#if EV_IDLE_ENABLE 3103#if EV_IDLE_ENABLE
1879 /* queue idle watchers unless other events are pending */ 3104 /* queue idle watchers unless other events are pending */
1880 idle_reify (EV_A); 3105 idle_reify (EV_A);
1881#endif 3106#endif
1882 3107
3108#if EV_CHECK_ENABLE
1883 /* queue check watchers, to be executed first */ 3109 /* queue check watchers, to be executed first */
1884 if (expect_false (checkcnt)) 3110 if (expect_false (checkcnt))
1885 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3111 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3112#endif
1886 3113
1887 call_pending (EV_A); 3114 EV_INVOKE_PENDING;
1888 } 3115 }
1889 while (expect_true ( 3116 while (expect_true (
1890 activecnt 3117 activecnt
1891 && !loop_done 3118 && !loop_done
1892 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3119 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1893 )); 3120 ));
1894 3121
1895 if (loop_done == EVUNLOOP_ONE) 3122 if (loop_done == EVBREAK_ONE)
1896 loop_done = EVUNLOOP_CANCEL; 3123 loop_done = EVBREAK_CANCEL;
3124
3125#if EV_FEATURE_API
3126 --loop_depth;
3127#endif
3128
3129 return activecnt;
1897} 3130}
1898 3131
1899void 3132void
1900ev_unloop (EV_P_ int how) 3133ev_break (EV_P_ int how) EV_THROW
1901{ 3134{
1902 loop_done = how; 3135 loop_done = how;
1903} 3136}
1904 3137
3138void
3139ev_ref (EV_P) EV_THROW
3140{
3141 ++activecnt;
3142}
3143
3144void
3145ev_unref (EV_P) EV_THROW
3146{
3147 --activecnt;
3148}
3149
3150void
3151ev_now_update (EV_P) EV_THROW
3152{
3153 time_update (EV_A_ 1e100);
3154}
3155
3156void
3157ev_suspend (EV_P) EV_THROW
3158{
3159 ev_now_update (EV_A);
3160}
3161
3162void
3163ev_resume (EV_P) EV_THROW
3164{
3165 ev_tstamp mn_prev = mn_now;
3166
3167 ev_now_update (EV_A);
3168 timers_reschedule (EV_A_ mn_now - mn_prev);
3169#if EV_PERIODIC_ENABLE
3170 /* TODO: really do this? */
3171 periodics_reschedule (EV_A);
3172#endif
3173}
3174
1905/*****************************************************************************/ 3175/*****************************************************************************/
3176/* singly-linked list management, used when the expected list length is short */
1906 3177
1907void inline_size 3178inline_size void
1908wlist_add (WL *head, WL elem) 3179wlist_add (WL *head, WL elem)
1909{ 3180{
1910 elem->next = *head; 3181 elem->next = *head;
1911 *head = elem; 3182 *head = elem;
1912} 3183}
1913 3184
1914void inline_size 3185inline_size void
1915wlist_del (WL *head, WL elem) 3186wlist_del (WL *head, WL elem)
1916{ 3187{
1917 while (*head) 3188 while (*head)
1918 { 3189 {
1919 if (*head == elem) 3190 if (expect_true (*head == elem))
1920 { 3191 {
1921 *head = elem->next; 3192 *head = elem->next;
1922 return; 3193 break;
1923 } 3194 }
1924 3195
1925 head = &(*head)->next; 3196 head = &(*head)->next;
1926 } 3197 }
1927} 3198}
1928 3199
1929void inline_speed 3200/* internal, faster, version of ev_clear_pending */
3201inline_speed void
1930clear_pending (EV_P_ W w) 3202clear_pending (EV_P_ W w)
1931{ 3203{
1932 if (w->pending) 3204 if (w->pending)
1933 { 3205 {
1934 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3206 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1935 w->pending = 0; 3207 w->pending = 0;
1936 } 3208 }
1937} 3209}
1938 3210
1939int 3211int
1940ev_clear_pending (EV_P_ void *w) 3212ev_clear_pending (EV_P_ void *w) EV_THROW
1941{ 3213{
1942 W w_ = (W)w; 3214 W w_ = (W)w;
1943 int pending = w_->pending; 3215 int pending = w_->pending;
1944 3216
1945 if (expect_true (pending)) 3217 if (expect_true (pending))
1946 { 3218 {
1947 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3219 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3220 p->w = (W)&pending_w;
1948 w_->pending = 0; 3221 w_->pending = 0;
1949 p->w = 0;
1950 return p->events; 3222 return p->events;
1951 } 3223 }
1952 else 3224 else
1953 return 0; 3225 return 0;
1954} 3226}
1955 3227
1956void inline_size 3228inline_size void
1957pri_adjust (EV_P_ W w) 3229pri_adjust (EV_P_ W w)
1958{ 3230{
1959 int pri = w->priority; 3231 int pri = ev_priority (w);
1960 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3232 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1961 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3233 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1962 w->priority = pri; 3234 ev_set_priority (w, pri);
1963} 3235}
1964 3236
1965void inline_speed 3237inline_speed void
1966ev_start (EV_P_ W w, int active) 3238ev_start (EV_P_ W w, int active)
1967{ 3239{
1968 pri_adjust (EV_A_ w); 3240 pri_adjust (EV_A_ w);
1969 w->active = active; 3241 w->active = active;
1970 ev_ref (EV_A); 3242 ev_ref (EV_A);
1971} 3243}
1972 3244
1973void inline_size 3245inline_size void
1974ev_stop (EV_P_ W w) 3246ev_stop (EV_P_ W w)
1975{ 3247{
1976 ev_unref (EV_A); 3248 ev_unref (EV_A);
1977 w->active = 0; 3249 w->active = 0;
1978} 3250}
1979 3251
1980/*****************************************************************************/ 3252/*****************************************************************************/
1981 3253
1982void noinline 3254void noinline
1983ev_io_start (EV_P_ ev_io *w) 3255ev_io_start (EV_P_ ev_io *w) EV_THROW
1984{ 3256{
1985 int fd = w->fd; 3257 int fd = w->fd;
1986 3258
1987 if (expect_false (ev_is_active (w))) 3259 if (expect_false (ev_is_active (w)))
1988 return; 3260 return;
1989 3261
1990 assert (("ev_io_start called with negative fd", fd >= 0)); 3262 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3263 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3264
3265 EV_FREQUENT_CHECK;
1991 3266
1992 ev_start (EV_A_ (W)w, 1); 3267 ev_start (EV_A_ (W)w, 1);
1993 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3268 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1994 wlist_add (&anfds[fd].head, (WL)w); 3269 wlist_add (&anfds[fd].head, (WL)w);
1995 3270
3271 /* common bug, apparently */
3272 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3273
1996 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3274 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1997 w->events &= ~EV_IOFDSET; 3275 w->events &= ~EV__IOFDSET;
3276
3277 EV_FREQUENT_CHECK;
1998} 3278}
1999 3279
2000void noinline 3280void noinline
2001ev_io_stop (EV_P_ ev_io *w) 3281ev_io_stop (EV_P_ ev_io *w) EV_THROW
2002{ 3282{
2003 clear_pending (EV_A_ (W)w); 3283 clear_pending (EV_A_ (W)w);
2004 if (expect_false (!ev_is_active (w))) 3284 if (expect_false (!ev_is_active (w)))
2005 return; 3285 return;
2006 3286
2007 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3287 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3288
3289 EV_FREQUENT_CHECK;
2008 3290
2009 wlist_del (&anfds[w->fd].head, (WL)w); 3291 wlist_del (&anfds[w->fd].head, (WL)w);
2010 ev_stop (EV_A_ (W)w); 3292 ev_stop (EV_A_ (W)w);
2011 3293
2012 fd_change (EV_A_ w->fd, 1); 3294 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3295
3296 EV_FREQUENT_CHECK;
2013} 3297}
2014 3298
2015void noinline 3299void noinline
2016ev_timer_start (EV_P_ ev_timer *w) 3300ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2017{ 3301{
2018 if (expect_false (ev_is_active (w))) 3302 if (expect_false (ev_is_active (w)))
2019 return; 3303 return;
2020 3304
2021 ev_at (w) += mn_now; 3305 ev_at (w) += mn_now;
2022 3306
2023 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3307 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2024 3308
3309 EV_FREQUENT_CHECK;
3310
3311 ++timercnt;
2025 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 3312 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2026 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3313 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2027 ANHE_w (timers [ev_active (w)]) = (WT)w; 3314 ANHE_w (timers [ev_active (w)]) = (WT)w;
2028 ANHE_at_set (timers [ev_active (w)]); 3315 ANHE_at_cache (timers [ev_active (w)]);
2029 upheap (timers, ev_active (w)); 3316 upheap (timers, ev_active (w));
2030 3317
3318 EV_FREQUENT_CHECK;
3319
2031 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3320 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2032} 3321}
2033 3322
2034void noinline 3323void noinline
2035ev_timer_stop (EV_P_ ev_timer *w) 3324ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2036{ 3325{
2037 clear_pending (EV_A_ (W)w); 3326 clear_pending (EV_A_ (W)w);
2038 if (expect_false (!ev_is_active (w))) 3327 if (expect_false (!ev_is_active (w)))
2039 return; 3328 return;
2040 3329
3330 EV_FREQUENT_CHECK;
3331
2041 { 3332 {
2042 int active = ev_active (w); 3333 int active = ev_active (w);
2043 3334
2044 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3335 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2045 3336
3337 --timercnt;
3338
2046 if (expect_true (active < timercnt + HEAP0 - 1)) 3339 if (expect_true (active < timercnt + HEAP0))
2047 { 3340 {
2048 timers [active] = timers [timercnt + HEAP0 - 1]; 3341 timers [active] = timers [timercnt + HEAP0];
2049 adjustheap (timers, timercnt, active); 3342 adjustheap (timers, timercnt, active);
2050 } 3343 }
2051
2052 --timercnt;
2053 } 3344 }
2054 3345
2055 ev_at (w) -= mn_now; 3346 ev_at (w) -= mn_now;
2056 3347
2057 ev_stop (EV_A_ (W)w); 3348 ev_stop (EV_A_ (W)w);
3349
3350 EV_FREQUENT_CHECK;
2058} 3351}
2059 3352
2060void noinline 3353void noinline
2061ev_timer_again (EV_P_ ev_timer *w) 3354ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2062{ 3355{
3356 EV_FREQUENT_CHECK;
3357
3358 clear_pending (EV_A_ (W)w);
3359
2063 if (ev_is_active (w)) 3360 if (ev_is_active (w))
2064 { 3361 {
2065 if (w->repeat) 3362 if (w->repeat)
2066 { 3363 {
2067 ev_at (w) = mn_now + w->repeat; 3364 ev_at (w) = mn_now + w->repeat;
2068 ANHE_at_set (timers [ev_active (w)]); 3365 ANHE_at_cache (timers [ev_active (w)]);
2069 adjustheap (timers, timercnt, ev_active (w)); 3366 adjustheap (timers, timercnt, ev_active (w));
2070 } 3367 }
2071 else 3368 else
2072 ev_timer_stop (EV_A_ w); 3369 ev_timer_stop (EV_A_ w);
2073 } 3370 }
2074 else if (w->repeat) 3371 else if (w->repeat)
2075 { 3372 {
2076 ev_at (w) = w->repeat; 3373 ev_at (w) = w->repeat;
2077 ev_timer_start (EV_A_ w); 3374 ev_timer_start (EV_A_ w);
2078 } 3375 }
3376
3377 EV_FREQUENT_CHECK;
3378}
3379
3380ev_tstamp
3381ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3382{
3383 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2079} 3384}
2080 3385
2081#if EV_PERIODIC_ENABLE 3386#if EV_PERIODIC_ENABLE
2082void noinline 3387void noinline
2083ev_periodic_start (EV_P_ ev_periodic *w) 3388ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2084{ 3389{
2085 if (expect_false (ev_is_active (w))) 3390 if (expect_false (ev_is_active (w)))
2086 return; 3391 return;
2087 3392
2088 if (w->reschedule_cb) 3393 if (w->reschedule_cb)
2089 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3394 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2090 else if (w->interval) 3395 else if (w->interval)
2091 { 3396 {
2092 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3397 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2093 /* this formula differs from the one in periodic_reify because we do not always round up */ 3398 periodic_recalc (EV_A_ w);
2094 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2095 } 3399 }
2096 else 3400 else
2097 ev_at (w) = w->offset; 3401 ev_at (w) = w->offset;
2098 3402
3403 EV_FREQUENT_CHECK;
3404
3405 ++periodiccnt;
2099 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 3406 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2100 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 3407 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2101 ANHE_w (periodics [ev_active (w)]) = (WT)w; 3408 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2102 ANHE_at_set (periodics [ev_active (w)]); 3409 ANHE_at_cache (periodics [ev_active (w)]);
2103 upheap (periodics, ev_active (w)); 3410 upheap (periodics, ev_active (w));
2104 3411
3412 EV_FREQUENT_CHECK;
3413
2105 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3414 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2106} 3415}
2107 3416
2108void noinline 3417void noinline
2109ev_periodic_stop (EV_P_ ev_periodic *w) 3418ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2110{ 3419{
2111 clear_pending (EV_A_ (W)w); 3420 clear_pending (EV_A_ (W)w);
2112 if (expect_false (!ev_is_active (w))) 3421 if (expect_false (!ev_is_active (w)))
2113 return; 3422 return;
2114 3423
3424 EV_FREQUENT_CHECK;
3425
2115 { 3426 {
2116 int active = ev_active (w); 3427 int active = ev_active (w);
2117 3428
2118 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3429 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2119 3430
3431 --periodiccnt;
3432
2120 if (expect_true (active < periodiccnt + HEAP0 - 1)) 3433 if (expect_true (active < periodiccnt + HEAP0))
2121 { 3434 {
2122 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 3435 periodics [active] = periodics [periodiccnt + HEAP0];
2123 adjustheap (periodics, periodiccnt, active); 3436 adjustheap (periodics, periodiccnt, active);
2124 } 3437 }
2125
2126 --periodiccnt;
2127 } 3438 }
2128 3439
2129 ev_stop (EV_A_ (W)w); 3440 ev_stop (EV_A_ (W)w);
3441
3442 EV_FREQUENT_CHECK;
2130} 3443}
2131 3444
2132void noinline 3445void noinline
2133ev_periodic_again (EV_P_ ev_periodic *w) 3446ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2134{ 3447{
2135 /* TODO: use adjustheap and recalculation */ 3448 /* TODO: use adjustheap and recalculation */
2136 ev_periodic_stop (EV_A_ w); 3449 ev_periodic_stop (EV_A_ w);
2137 ev_periodic_start (EV_A_ w); 3450 ev_periodic_start (EV_A_ w);
2138} 3451}
… …
2140 3453
2141#ifndef SA_RESTART 3454#ifndef SA_RESTART
2142# define SA_RESTART 0 3455# define SA_RESTART 0
2143#endif 3456#endif
2144 3457
3458#if EV_SIGNAL_ENABLE
3459
2145void noinline 3460void noinline
2146ev_signal_start (EV_P_ ev_signal *w) 3461ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2147{ 3462{
2148#if EV_MULTIPLICITY
2149 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2150#endif
2151 if (expect_false (ev_is_active (w))) 3463 if (expect_false (ev_is_active (w)))
2152 return; 3464 return;
2153 3465
2154 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3466 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2155 3467
2156 evpipe_init (EV_A); 3468#if EV_MULTIPLICITY
3469 assert (("libev: a signal must not be attached to two different loops",
3470 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2157 3471
3472 signals [w->signum - 1].loop = EV_A;
3473#endif
3474
3475 EV_FREQUENT_CHECK;
3476
3477#if EV_USE_SIGNALFD
3478 if (sigfd == -2)
2158 { 3479 {
2159#ifndef _WIN32 3480 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2160 sigset_t full, prev; 3481 if (sigfd < 0 && errno == EINVAL)
2161 sigfillset (&full); 3482 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2162 sigprocmask (SIG_SETMASK, &full, &prev);
2163#endif
2164 3483
2165 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3484 if (sigfd >= 0)
3485 {
3486 fd_intern (sigfd); /* doing it twice will not hurt */
2166 3487
2167#ifndef _WIN32 3488 sigemptyset (&sigfd_set);
2168 sigprocmask (SIG_SETMASK, &prev, 0); 3489
2169#endif 3490 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3491 ev_set_priority (&sigfd_w, EV_MAXPRI);
3492 ev_io_start (EV_A_ &sigfd_w);
3493 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3494 }
2170 } 3495 }
3496
3497 if (sigfd >= 0)
3498 {
3499 /* TODO: check .head */
3500 sigaddset (&sigfd_set, w->signum);
3501 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3502
3503 signalfd (sigfd, &sigfd_set, 0);
3504 }
3505#endif
2171 3506
2172 ev_start (EV_A_ (W)w, 1); 3507 ev_start (EV_A_ (W)w, 1);
2173 wlist_add (&signals [w->signum - 1].head, (WL)w); 3508 wlist_add (&signals [w->signum - 1].head, (WL)w);
2174 3509
2175 if (!((WL)w)->next) 3510 if (!((WL)w)->next)
3511# if EV_USE_SIGNALFD
3512 if (sigfd < 0) /*TODO*/
3513# endif
2176 { 3514 {
2177#if _WIN32 3515# ifdef _WIN32
3516 evpipe_init (EV_A);
3517
2178 signal (w->signum, ev_sighandler); 3518 signal (w->signum, ev_sighandler);
2179#else 3519# else
2180 struct sigaction sa; 3520 struct sigaction sa;
3521
3522 evpipe_init (EV_A);
3523
2181 sa.sa_handler = ev_sighandler; 3524 sa.sa_handler = ev_sighandler;
2182 sigfillset (&sa.sa_mask); 3525 sigfillset (&sa.sa_mask);
2183 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3526 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2184 sigaction (w->signum, &sa, 0); 3527 sigaction (w->signum, &sa, 0);
3528
3529 if (origflags & EVFLAG_NOSIGMASK)
3530 {
3531 sigemptyset (&sa.sa_mask);
3532 sigaddset (&sa.sa_mask, w->signum);
3533 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3534 }
2185#endif 3535#endif
2186 } 3536 }
3537
3538 EV_FREQUENT_CHECK;
2187} 3539}
2188 3540
2189void noinline 3541void noinline
2190ev_signal_stop (EV_P_ ev_signal *w) 3542ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2191{ 3543{
2192 clear_pending (EV_A_ (W)w); 3544 clear_pending (EV_A_ (W)w);
2193 if (expect_false (!ev_is_active (w))) 3545 if (expect_false (!ev_is_active (w)))
2194 return; 3546 return;
2195 3547
3548 EV_FREQUENT_CHECK;
3549
2196 wlist_del (&signals [w->signum - 1].head, (WL)w); 3550 wlist_del (&signals [w->signum - 1].head, (WL)w);
2197 ev_stop (EV_A_ (W)w); 3551 ev_stop (EV_A_ (W)w);
2198 3552
2199 if (!signals [w->signum - 1].head) 3553 if (!signals [w->signum - 1].head)
3554 {
3555#if EV_MULTIPLICITY
3556 signals [w->signum - 1].loop = 0; /* unattach from signal */
3557#endif
3558#if EV_USE_SIGNALFD
3559 if (sigfd >= 0)
3560 {
3561 sigset_t ss;
3562
3563 sigemptyset (&ss);
3564 sigaddset (&ss, w->signum);
3565 sigdelset (&sigfd_set, w->signum);
3566
3567 signalfd (sigfd, &sigfd_set, 0);
3568 sigprocmask (SIG_UNBLOCK, &ss, 0);
3569 }
3570 else
3571#endif
2200 signal (w->signum, SIG_DFL); 3572 signal (w->signum, SIG_DFL);
3573 }
3574
3575 EV_FREQUENT_CHECK;
2201} 3576}
3577
3578#endif
3579
3580#if EV_CHILD_ENABLE
2202 3581
2203void 3582void
2204ev_child_start (EV_P_ ev_child *w) 3583ev_child_start (EV_P_ ev_child *w) EV_THROW
2205{ 3584{
2206#if EV_MULTIPLICITY 3585#if EV_MULTIPLICITY
2207 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3586 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2208#endif 3587#endif
2209 if (expect_false (ev_is_active (w))) 3588 if (expect_false (ev_is_active (w)))
2210 return; 3589 return;
2211 3590
3591 EV_FREQUENT_CHECK;
3592
2212 ev_start (EV_A_ (W)w, 1); 3593 ev_start (EV_A_ (W)w, 1);
2213 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3594 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
3595
3596 EV_FREQUENT_CHECK;
2214} 3597}
2215 3598
2216void 3599void
2217ev_child_stop (EV_P_ ev_child *w) 3600ev_child_stop (EV_P_ ev_child *w) EV_THROW
2218{ 3601{
2219 clear_pending (EV_A_ (W)w); 3602 clear_pending (EV_A_ (W)w);
2220 if (expect_false (!ev_is_active (w))) 3603 if (expect_false (!ev_is_active (w)))
2221 return; 3604 return;
2222 3605
3606 EV_FREQUENT_CHECK;
3607
2223 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3608 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2224 ev_stop (EV_A_ (W)w); 3609 ev_stop (EV_A_ (W)w);
3610
3611 EV_FREQUENT_CHECK;
2225} 3612}
3613
3614#endif
2226 3615
2227#if EV_STAT_ENABLE 3616#if EV_STAT_ENABLE
2228 3617
2229# ifdef _WIN32 3618# ifdef _WIN32
2230# undef lstat 3619# undef lstat
2231# define lstat(a,b) _stati64 (a,b) 3620# define lstat(a,b) _stati64 (a,b)
2232# endif 3621# endif
2233 3622
2234#define DEF_STAT_INTERVAL 5.0074891 3623#define DEF_STAT_INTERVAL 5.0074891
3624#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2235#define MIN_STAT_INTERVAL 0.1074891 3625#define MIN_STAT_INTERVAL 0.1074891
2236 3626
2237static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3627static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2238 3628
2239#if EV_USE_INOTIFY 3629#if EV_USE_INOTIFY
2240# define EV_INOTIFY_BUFSIZE 8192 3630
3631/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3632# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2241 3633
2242static void noinline 3634static void noinline
2243infy_add (EV_P_ ev_stat *w) 3635infy_add (EV_P_ ev_stat *w)
2244{ 3636{
2245 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3637 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2246 3638
2247 if (w->wd < 0) 3639 if (w->wd >= 0)
3640 {
3641 struct statfs sfs;
3642
3643 /* now local changes will be tracked by inotify, but remote changes won't */
3644 /* unless the filesystem is known to be local, we therefore still poll */
3645 /* also do poll on <2.6.25, but with normal frequency */
3646
3647 if (!fs_2625)
3648 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3649 else if (!statfs (w->path, &sfs)
3650 && (sfs.f_type == 0x1373 /* devfs */
3651 || sfs.f_type == 0xEF53 /* ext2/3 */
3652 || sfs.f_type == 0x3153464a /* jfs */
3653 || sfs.f_type == 0x52654973 /* reiser3 */
3654 || sfs.f_type == 0x01021994 /* tempfs */
3655 || sfs.f_type == 0x58465342 /* xfs */))
3656 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3657 else
3658 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2248 { 3659 }
2249 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3660 else
3661 {
3662 /* can't use inotify, continue to stat */
3663 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2250 3664
2251 /* monitor some parent directory for speedup hints */ 3665 /* if path is not there, monitor some parent directory for speedup hints */
2252 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3666 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2253 /* but an efficiency issue only */ 3667 /* but an efficiency issue only */
2254 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3668 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2255 { 3669 {
2256 char path [4096]; 3670 char path [4096];
2257 strcpy (path, w->path); 3671 strcpy (path, w->path);
… …
2261 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3675 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2262 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3676 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2263 3677
2264 char *pend = strrchr (path, '/'); 3678 char *pend = strrchr (path, '/');
2265 3679
2266 if (!pend) 3680 if (!pend || pend == path)
2267 break; /* whoops, no '/', complain to your admin */ 3681 break;
2268 3682
2269 *pend = 0; 3683 *pend = 0;
2270 w->wd = inotify_add_watch (fs_fd, path, mask); 3684 w->wd = inotify_add_watch (fs_fd, path, mask);
2271 } 3685 }
2272 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3686 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2273 } 3687 }
2274 } 3688 }
2275 else
2276 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2277 3689
2278 if (w->wd >= 0) 3690 if (w->wd >= 0)
2279 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3691 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3692
3693 /* now re-arm timer, if required */
3694 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3695 ev_timer_again (EV_A_ &w->timer);
3696 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2280} 3697}
2281 3698
2282static void noinline 3699static void noinline
2283infy_del (EV_P_ ev_stat *w) 3700infy_del (EV_P_ ev_stat *w)
2284{ 3701{
… …
2287 3704
2288 if (wd < 0) 3705 if (wd < 0)
2289 return; 3706 return;
2290 3707
2291 w->wd = -2; 3708 w->wd = -2;
2292 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3709 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2293 wlist_del (&fs_hash [slot].head, (WL)w); 3710 wlist_del (&fs_hash [slot].head, (WL)w);
2294 3711
2295 /* remove this watcher, if others are watching it, they will rearm */ 3712 /* remove this watcher, if others are watching it, they will rearm */
2296 inotify_rm_watch (fs_fd, wd); 3713 inotify_rm_watch (fs_fd, wd);
2297} 3714}
2298 3715
2299static void noinline 3716static void noinline
2300infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3717infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2301{ 3718{
2302 if (slot < 0) 3719 if (slot < 0)
2303 /* overflow, need to check for all hahs slots */ 3720 /* overflow, need to check for all hash slots */
2304 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3721 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2305 infy_wd (EV_A_ slot, wd, ev); 3722 infy_wd (EV_A_ slot, wd, ev);
2306 else 3723 else
2307 { 3724 {
2308 WL w_; 3725 WL w_;
2309 3726
2310 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3727 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2311 { 3728 {
2312 ev_stat *w = (ev_stat *)w_; 3729 ev_stat *w = (ev_stat *)w_;
2313 w_ = w_->next; /* lets us remove this watcher and all before it */ 3730 w_ = w_->next; /* lets us remove this watcher and all before it */
2314 3731
2315 if (w->wd == wd || wd == -1) 3732 if (w->wd == wd || wd == -1)
2316 { 3733 {
2317 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3734 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2318 { 3735 {
3736 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2319 w->wd = -1; 3737 w->wd = -1;
2320 infy_add (EV_A_ w); /* re-add, no matter what */ 3738 infy_add (EV_A_ w); /* re-add, no matter what */
2321 } 3739 }
2322 3740
2323 stat_timer_cb (EV_A_ &w->timer, 0); 3741 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2328 3746
2329static void 3747static void
2330infy_cb (EV_P_ ev_io *w, int revents) 3748infy_cb (EV_P_ ev_io *w, int revents)
2331{ 3749{
2332 char buf [EV_INOTIFY_BUFSIZE]; 3750 char buf [EV_INOTIFY_BUFSIZE];
2333 struct inotify_event *ev = (struct inotify_event *)buf;
2334 int ofs; 3751 int ofs;
2335 int len = read (fs_fd, buf, sizeof (buf)); 3752 int len = read (fs_fd, buf, sizeof (buf));
2336 3753
2337 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3754 for (ofs = 0; ofs < len; )
3755 {
3756 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2338 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3757 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3758 ofs += sizeof (struct inotify_event) + ev->len;
3759 }
2339} 3760}
2340 3761
2341void inline_size 3762inline_size void ecb_cold
3763ev_check_2625 (EV_P)
3764{
3765 /* kernels < 2.6.25 are borked
3766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3767 */
3768 if (ev_linux_version () < 0x020619)
3769 return;
3770
3771 fs_2625 = 1;
3772}
3773
3774inline_size int
3775infy_newfd (void)
3776{
3777#if defined IN_CLOEXEC && defined IN_NONBLOCK
3778 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3779 if (fd >= 0)
3780 return fd;
3781#endif
3782 return inotify_init ();
3783}
3784
3785inline_size void
2342infy_init (EV_P) 3786infy_init (EV_P)
2343{ 3787{
2344 if (fs_fd != -2) 3788 if (fs_fd != -2)
2345 return; 3789 return;
2346 3790
3791 fs_fd = -1;
3792
3793 ev_check_2625 (EV_A);
3794
2347 fs_fd = inotify_init (); 3795 fs_fd = infy_newfd ();
2348 3796
2349 if (fs_fd >= 0) 3797 if (fs_fd >= 0)
2350 { 3798 {
3799 fd_intern (fs_fd);
2351 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3800 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2352 ev_set_priority (&fs_w, EV_MAXPRI); 3801 ev_set_priority (&fs_w, EV_MAXPRI);
2353 ev_io_start (EV_A_ &fs_w); 3802 ev_io_start (EV_A_ &fs_w);
3803 ev_unref (EV_A);
2354 } 3804 }
2355} 3805}
2356 3806
2357void inline_size 3807inline_size void
2358infy_fork (EV_P) 3808infy_fork (EV_P)
2359{ 3809{
2360 int slot; 3810 int slot;
2361 3811
2362 if (fs_fd < 0) 3812 if (fs_fd < 0)
2363 return; 3813 return;
2364 3814
3815 ev_ref (EV_A);
3816 ev_io_stop (EV_A_ &fs_w);
2365 close (fs_fd); 3817 close (fs_fd);
2366 fs_fd = inotify_init (); 3818 fs_fd = infy_newfd ();
2367 3819
3820 if (fs_fd >= 0)
3821 {
3822 fd_intern (fs_fd);
3823 ev_io_set (&fs_w, fs_fd, EV_READ);
3824 ev_io_start (EV_A_ &fs_w);
3825 ev_unref (EV_A);
3826 }
3827
2368 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3828 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2369 { 3829 {
2370 WL w_ = fs_hash [slot].head; 3830 WL w_ = fs_hash [slot].head;
2371 fs_hash [slot].head = 0; 3831 fs_hash [slot].head = 0;
2372 3832
2373 while (w_) 3833 while (w_)
… …
2378 w->wd = -1; 3838 w->wd = -1;
2379 3839
2380 if (fs_fd >= 0) 3840 if (fs_fd >= 0)
2381 infy_add (EV_A_ w); /* re-add, no matter what */ 3841 infy_add (EV_A_ w); /* re-add, no matter what */
2382 else 3842 else
3843 {
3844 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3845 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2383 ev_timer_start (EV_A_ &w->timer); 3846 ev_timer_again (EV_A_ &w->timer);
3847 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3848 }
2384 } 3849 }
2385
2386 } 3850 }
2387} 3851}
2388 3852
3853#endif
3854
3855#ifdef _WIN32
3856# define EV_LSTAT(p,b) _stati64 (p, b)
3857#else
3858# define EV_LSTAT(p,b) lstat (p, b)
2389#endif 3859#endif
2390 3860
2391void 3861void
2392ev_stat_stat (EV_P_ ev_stat *w) 3862ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2393{ 3863{
2394 if (lstat (w->path, &w->attr) < 0) 3864 if (lstat (w->path, &w->attr) < 0)
2395 w->attr.st_nlink = 0; 3865 w->attr.st_nlink = 0;
2396 else if (!w->attr.st_nlink) 3866 else if (!w->attr.st_nlink)
2397 w->attr.st_nlink = 1; 3867 w->attr.st_nlink = 1;
… …
2400static void noinline 3870static void noinline
2401stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3871stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2402{ 3872{
2403 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3873 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2404 3874
2405 /* we copy this here each the time so that */ 3875 ev_statdata prev = w->attr;
2406 /* prev has the old value when the callback gets invoked */
2407 w->prev = w->attr;
2408 ev_stat_stat (EV_A_ w); 3876 ev_stat_stat (EV_A_ w);
2409 3877
2410 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3878 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2411 if ( 3879 if (
2412 w->prev.st_dev != w->attr.st_dev 3880 prev.st_dev != w->attr.st_dev
2413 || w->prev.st_ino != w->attr.st_ino 3881 || prev.st_ino != w->attr.st_ino
2414 || w->prev.st_mode != w->attr.st_mode 3882 || prev.st_mode != w->attr.st_mode
2415 || w->prev.st_nlink != w->attr.st_nlink 3883 || prev.st_nlink != w->attr.st_nlink
2416 || w->prev.st_uid != w->attr.st_uid 3884 || prev.st_uid != w->attr.st_uid
2417 || w->prev.st_gid != w->attr.st_gid 3885 || prev.st_gid != w->attr.st_gid
2418 || w->prev.st_rdev != w->attr.st_rdev 3886 || prev.st_rdev != w->attr.st_rdev
2419 || w->prev.st_size != w->attr.st_size 3887 || prev.st_size != w->attr.st_size
2420 || w->prev.st_atime != w->attr.st_atime 3888 || prev.st_atime != w->attr.st_atime
2421 || w->prev.st_mtime != w->attr.st_mtime 3889 || prev.st_mtime != w->attr.st_mtime
2422 || w->prev.st_ctime != w->attr.st_ctime 3890 || prev.st_ctime != w->attr.st_ctime
2423 ) { 3891 ) {
3892 /* we only update w->prev on actual differences */
3893 /* in case we test more often than invoke the callback, */
3894 /* to ensure that prev is always different to attr */
3895 w->prev = prev;
3896
2424 #if EV_USE_INOTIFY 3897 #if EV_USE_INOTIFY
3898 if (fs_fd >= 0)
3899 {
2425 infy_del (EV_A_ w); 3900 infy_del (EV_A_ w);
2426 infy_add (EV_A_ w); 3901 infy_add (EV_A_ w);
2427 ev_stat_stat (EV_A_ w); /* avoid race... */ 3902 ev_stat_stat (EV_A_ w); /* avoid race... */
3903 }
2428 #endif 3904 #endif
2429 3905
2430 ev_feed_event (EV_A_ w, EV_STAT); 3906 ev_feed_event (EV_A_ w, EV_STAT);
2431 } 3907 }
2432} 3908}
2433 3909
2434void 3910void
2435ev_stat_start (EV_P_ ev_stat *w) 3911ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2436{ 3912{
2437 if (expect_false (ev_is_active (w))) 3913 if (expect_false (ev_is_active (w)))
2438 return; 3914 return;
2439 3915
2440 /* since we use memcmp, we need to clear any padding data etc. */
2441 memset (&w->prev, 0, sizeof (ev_statdata));
2442 memset (&w->attr, 0, sizeof (ev_statdata));
2443
2444 ev_stat_stat (EV_A_ w); 3916 ev_stat_stat (EV_A_ w);
2445 3917
3918 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2446 if (w->interval < MIN_STAT_INTERVAL) 3919 w->interval = MIN_STAT_INTERVAL;
2447 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2448 3920
2449 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3921 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2450 ev_set_priority (&w->timer, ev_priority (w)); 3922 ev_set_priority (&w->timer, ev_priority (w));
2451 3923
2452#if EV_USE_INOTIFY 3924#if EV_USE_INOTIFY
2453 infy_init (EV_A); 3925 infy_init (EV_A);
2454 3926
2455 if (fs_fd >= 0) 3927 if (fs_fd >= 0)
2456 infy_add (EV_A_ w); 3928 infy_add (EV_A_ w);
2457 else 3929 else
2458#endif 3930#endif
3931 {
2459 ev_timer_start (EV_A_ &w->timer); 3932 ev_timer_again (EV_A_ &w->timer);
3933 ev_unref (EV_A);
3934 }
2460 3935
2461 ev_start (EV_A_ (W)w, 1); 3936 ev_start (EV_A_ (W)w, 1);
3937
3938 EV_FREQUENT_CHECK;
2462} 3939}
2463 3940
2464void 3941void
2465ev_stat_stop (EV_P_ ev_stat *w) 3942ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2466{ 3943{
2467 clear_pending (EV_A_ (W)w); 3944 clear_pending (EV_A_ (W)w);
2468 if (expect_false (!ev_is_active (w))) 3945 if (expect_false (!ev_is_active (w)))
2469 return; 3946 return;
2470 3947
3948 EV_FREQUENT_CHECK;
3949
2471#if EV_USE_INOTIFY 3950#if EV_USE_INOTIFY
2472 infy_del (EV_A_ w); 3951 infy_del (EV_A_ w);
2473#endif 3952#endif
3953
3954 if (ev_is_active (&w->timer))
3955 {
3956 ev_ref (EV_A);
2474 ev_timer_stop (EV_A_ &w->timer); 3957 ev_timer_stop (EV_A_ &w->timer);
3958 }
2475 3959
2476 ev_stop (EV_A_ (W)w); 3960 ev_stop (EV_A_ (W)w);
3961
3962 EV_FREQUENT_CHECK;
2477} 3963}
2478#endif 3964#endif
2479 3965
2480#if EV_IDLE_ENABLE 3966#if EV_IDLE_ENABLE
2481void 3967void
2482ev_idle_start (EV_P_ ev_idle *w) 3968ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2483{ 3969{
2484 if (expect_false (ev_is_active (w))) 3970 if (expect_false (ev_is_active (w)))
2485 return; 3971 return;
2486 3972
2487 pri_adjust (EV_A_ (W)w); 3973 pri_adjust (EV_A_ (W)w);
3974
3975 EV_FREQUENT_CHECK;
2488 3976
2489 { 3977 {
2490 int active = ++idlecnt [ABSPRI (w)]; 3978 int active = ++idlecnt [ABSPRI (w)];
2491 3979
2492 ++idleall; 3980 ++idleall;
2493 ev_start (EV_A_ (W)w, active); 3981 ev_start (EV_A_ (W)w, active);
2494 3982
2495 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3983 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2496 idles [ABSPRI (w)][active - 1] = w; 3984 idles [ABSPRI (w)][active - 1] = w;
2497 } 3985 }
3986
3987 EV_FREQUENT_CHECK;
2498} 3988}
2499 3989
2500void 3990void
2501ev_idle_stop (EV_P_ ev_idle *w) 3991ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2502{ 3992{
2503 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
2504 if (expect_false (!ev_is_active (w))) 3994 if (expect_false (!ev_is_active (w)))
2505 return; 3995 return;
2506 3996
3997 EV_FREQUENT_CHECK;
3998
2507 { 3999 {
2508 int active = ev_active (w); 4000 int active = ev_active (w);
2509 4001
2510 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 4002 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2511 ev_active (idles [ABSPRI (w)][active - 1]) = active; 4003 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2512 4004
2513 ev_stop (EV_A_ (W)w); 4005 ev_stop (EV_A_ (W)w);
2514 --idleall; 4006 --idleall;
2515 } 4007 }
2516}
2517#endif
2518 4008
4009 EV_FREQUENT_CHECK;
4010}
4011#endif
4012
4013#if EV_PREPARE_ENABLE
2519void 4014void
2520ev_prepare_start (EV_P_ ev_prepare *w) 4015ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2521{ 4016{
2522 if (expect_false (ev_is_active (w))) 4017 if (expect_false (ev_is_active (w)))
2523 return; 4018 return;
4019
4020 EV_FREQUENT_CHECK;
2524 4021
2525 ev_start (EV_A_ (W)w, ++preparecnt); 4022 ev_start (EV_A_ (W)w, ++preparecnt);
2526 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4023 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2527 prepares [preparecnt - 1] = w; 4024 prepares [preparecnt - 1] = w;
4025
4026 EV_FREQUENT_CHECK;
2528} 4027}
2529 4028
2530void 4029void
2531ev_prepare_stop (EV_P_ ev_prepare *w) 4030ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2532{ 4031{
2533 clear_pending (EV_A_ (W)w); 4032 clear_pending (EV_A_ (W)w);
2534 if (expect_false (!ev_is_active (w))) 4033 if (expect_false (!ev_is_active (w)))
2535 return; 4034 return;
2536 4035
4036 EV_FREQUENT_CHECK;
4037
2537 { 4038 {
2538 int active = ev_active (w); 4039 int active = ev_active (w);
2539 4040
2540 prepares [active - 1] = prepares [--preparecnt]; 4041 prepares [active - 1] = prepares [--preparecnt];
2541 ev_active (prepares [active - 1]) = active; 4042 ev_active (prepares [active - 1]) = active;
2542 } 4043 }
2543 4044
2544 ev_stop (EV_A_ (W)w); 4045 ev_stop (EV_A_ (W)w);
2545}
2546 4046
4047 EV_FREQUENT_CHECK;
4048}
4049#endif
4050
4051#if EV_CHECK_ENABLE
2547void 4052void
2548ev_check_start (EV_P_ ev_check *w) 4053ev_check_start (EV_P_ ev_check *w) EV_THROW
2549{ 4054{
2550 if (expect_false (ev_is_active (w))) 4055 if (expect_false (ev_is_active (w)))
2551 return; 4056 return;
4057
4058 EV_FREQUENT_CHECK;
2552 4059
2553 ev_start (EV_A_ (W)w, ++checkcnt); 4060 ev_start (EV_A_ (W)w, ++checkcnt);
2554 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4061 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2555 checks [checkcnt - 1] = w; 4062 checks [checkcnt - 1] = w;
4063
4064 EV_FREQUENT_CHECK;
2556} 4065}
2557 4066
2558void 4067void
2559ev_check_stop (EV_P_ ev_check *w) 4068ev_check_stop (EV_P_ ev_check *w) EV_THROW
2560{ 4069{
2561 clear_pending (EV_A_ (W)w); 4070 clear_pending (EV_A_ (W)w);
2562 if (expect_false (!ev_is_active (w))) 4071 if (expect_false (!ev_is_active (w)))
2563 return; 4072 return;
2564 4073
4074 EV_FREQUENT_CHECK;
4075
2565 { 4076 {
2566 int active = ev_active (w); 4077 int active = ev_active (w);
2567 4078
2568 checks [active - 1] = checks [--checkcnt]; 4079 checks [active - 1] = checks [--checkcnt];
2569 ev_active (checks [active - 1]) = active; 4080 ev_active (checks [active - 1]) = active;
2570 } 4081 }
2571 4082
2572 ev_stop (EV_A_ (W)w); 4083 ev_stop (EV_A_ (W)w);
4084
4085 EV_FREQUENT_CHECK;
2573} 4086}
4087#endif
2574 4088
2575#if EV_EMBED_ENABLE 4089#if EV_EMBED_ENABLE
2576void noinline 4090void noinline
2577ev_embed_sweep (EV_P_ ev_embed *w) 4091ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2578{ 4092{
2579 ev_loop (w->other, EVLOOP_NONBLOCK); 4093 ev_run (w->other, EVRUN_NOWAIT);
2580} 4094}
2581 4095
2582static void 4096static void
2583embed_io_cb (EV_P_ ev_io *io, int revents) 4097embed_io_cb (EV_P_ ev_io *io, int revents)
2584{ 4098{
2585 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4099 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2586 4100
2587 if (ev_cb (w)) 4101 if (ev_cb (w))
2588 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4102 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2589 else 4103 else
2590 ev_loop (w->other, EVLOOP_NONBLOCK); 4104 ev_run (w->other, EVRUN_NOWAIT);
2591} 4105}
2592 4106
2593static void 4107static void
2594embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4108embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2595{ 4109{
2596 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4110 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2597 4111
2598 { 4112 {
2599 struct ev_loop *loop = w->other; 4113 EV_P = w->other;
2600 4114
2601 while (fdchangecnt) 4115 while (fdchangecnt)
2602 { 4116 {
2603 fd_reify (EV_A); 4117 fd_reify (EV_A);
2604 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4118 ev_run (EV_A_ EVRUN_NOWAIT);
2605 } 4119 }
2606 } 4120 }
4121}
4122
4123static void
4124embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4125{
4126 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4127
4128 ev_embed_stop (EV_A_ w);
4129
4130 {
4131 EV_P = w->other;
4132
4133 ev_loop_fork (EV_A);
4134 ev_run (EV_A_ EVRUN_NOWAIT);
4135 }
4136
4137 ev_embed_start (EV_A_ w);
2607} 4138}
2608 4139
2609#if 0 4140#if 0
2610static void 4141static void
2611embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4142embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2613 ev_idle_stop (EV_A_ idle); 4144 ev_idle_stop (EV_A_ idle);
2614} 4145}
2615#endif 4146#endif
2616 4147
2617void 4148void
2618ev_embed_start (EV_P_ ev_embed *w) 4149ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2619{ 4150{
2620 if (expect_false (ev_is_active (w))) 4151 if (expect_false (ev_is_active (w)))
2621 return; 4152 return;
2622 4153
2623 { 4154 {
2624 struct ev_loop *loop = w->other; 4155 EV_P = w->other;
2625 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4156 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2626 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4157 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2627 } 4158 }
4159
4160 EV_FREQUENT_CHECK;
2628 4161
2629 ev_set_priority (&w->io, ev_priority (w)); 4162 ev_set_priority (&w->io, ev_priority (w));
2630 ev_io_start (EV_A_ &w->io); 4163 ev_io_start (EV_A_ &w->io);
2631 4164
2632 ev_prepare_init (&w->prepare, embed_prepare_cb); 4165 ev_prepare_init (&w->prepare, embed_prepare_cb);
2633 ev_set_priority (&w->prepare, EV_MINPRI); 4166 ev_set_priority (&w->prepare, EV_MINPRI);
2634 ev_prepare_start (EV_A_ &w->prepare); 4167 ev_prepare_start (EV_A_ &w->prepare);
2635 4168
4169 ev_fork_init (&w->fork, embed_fork_cb);
4170 ev_fork_start (EV_A_ &w->fork);
4171
2636 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 4172 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2637 4173
2638 ev_start (EV_A_ (W)w, 1); 4174 ev_start (EV_A_ (W)w, 1);
4175
4176 EV_FREQUENT_CHECK;
2639} 4177}
2640 4178
2641void 4179void
2642ev_embed_stop (EV_P_ ev_embed *w) 4180ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2643{ 4181{
2644 clear_pending (EV_A_ (W)w); 4182 clear_pending (EV_A_ (W)w);
2645 if (expect_false (!ev_is_active (w))) 4183 if (expect_false (!ev_is_active (w)))
2646 return; 4184 return;
2647 4185
4186 EV_FREQUENT_CHECK;
4187
2648 ev_io_stop (EV_A_ &w->io); 4188 ev_io_stop (EV_A_ &w->io);
2649 ev_prepare_stop (EV_A_ &w->prepare); 4189 ev_prepare_stop (EV_A_ &w->prepare);
4190 ev_fork_stop (EV_A_ &w->fork);
2650 4191
2651 ev_stop (EV_A_ (W)w); 4192 ev_stop (EV_A_ (W)w);
4193
4194 EV_FREQUENT_CHECK;
2652} 4195}
2653#endif 4196#endif
2654 4197
2655#if EV_FORK_ENABLE 4198#if EV_FORK_ENABLE
2656void 4199void
2657ev_fork_start (EV_P_ ev_fork *w) 4200ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2658{ 4201{
2659 if (expect_false (ev_is_active (w))) 4202 if (expect_false (ev_is_active (w)))
2660 return; 4203 return;
4204
4205 EV_FREQUENT_CHECK;
2661 4206
2662 ev_start (EV_A_ (W)w, ++forkcnt); 4207 ev_start (EV_A_ (W)w, ++forkcnt);
2663 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4208 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2664 forks [forkcnt - 1] = w; 4209 forks [forkcnt - 1] = w;
4210
4211 EV_FREQUENT_CHECK;
2665} 4212}
2666 4213
2667void 4214void
2668ev_fork_stop (EV_P_ ev_fork *w) 4215ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
2669{ 4216{
2670 clear_pending (EV_A_ (W)w); 4217 clear_pending (EV_A_ (W)w);
2671 if (expect_false (!ev_is_active (w))) 4218 if (expect_false (!ev_is_active (w)))
2672 return; 4219 return;
2673 4220
4221 EV_FREQUENT_CHECK;
4222
2674 { 4223 {
2675 int active = ev_active (w); 4224 int active = ev_active (w);
2676 4225
2677 forks [active - 1] = forks [--forkcnt]; 4226 forks [active - 1] = forks [--forkcnt];
2678 ev_active (forks [active - 1]) = active; 4227 ev_active (forks [active - 1]) = active;
2679 } 4228 }
2680 4229
2681 ev_stop (EV_A_ (W)w); 4230 ev_stop (EV_A_ (W)w);
4231
4232 EV_FREQUENT_CHECK;
4233}
4234#endif
4235
4236#if EV_CLEANUP_ENABLE
4237void
4238ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4239{
4240 if (expect_false (ev_is_active (w)))
4241 return;
4242
4243 EV_FREQUENT_CHECK;
4244
4245 ev_start (EV_A_ (W)w, ++cleanupcnt);
4246 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4247 cleanups [cleanupcnt - 1] = w;
4248
4249 /* cleanup watchers should never keep a refcount on the loop */
4250 ev_unref (EV_A);
4251 EV_FREQUENT_CHECK;
4252}
4253
4254void
4255ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4256{
4257 clear_pending (EV_A_ (W)w);
4258 if (expect_false (!ev_is_active (w)))
4259 return;
4260
4261 EV_FREQUENT_CHECK;
4262 ev_ref (EV_A);
4263
4264 {
4265 int active = ev_active (w);
4266
4267 cleanups [active - 1] = cleanups [--cleanupcnt];
4268 ev_active (cleanups [active - 1]) = active;
4269 }
4270
4271 ev_stop (EV_A_ (W)w);
4272
4273 EV_FREQUENT_CHECK;
2682} 4274}
2683#endif 4275#endif
2684 4276
2685#if EV_ASYNC_ENABLE 4277#if EV_ASYNC_ENABLE
2686void 4278void
2687ev_async_start (EV_P_ ev_async *w) 4279ev_async_start (EV_P_ ev_async *w) EV_THROW
2688{ 4280{
2689 if (expect_false (ev_is_active (w))) 4281 if (expect_false (ev_is_active (w)))
2690 return; 4282 return;
2691 4283
4284 w->sent = 0;
4285
2692 evpipe_init (EV_A); 4286 evpipe_init (EV_A);
4287
4288 EV_FREQUENT_CHECK;
2693 4289
2694 ev_start (EV_A_ (W)w, ++asynccnt); 4290 ev_start (EV_A_ (W)w, ++asynccnt);
2695 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4291 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2696 asyncs [asynccnt - 1] = w; 4292 asyncs [asynccnt - 1] = w;
4293
4294 EV_FREQUENT_CHECK;
2697} 4295}
2698 4296
2699void 4297void
2700ev_async_stop (EV_P_ ev_async *w) 4298ev_async_stop (EV_P_ ev_async *w) EV_THROW
2701{ 4299{
2702 clear_pending (EV_A_ (W)w); 4300 clear_pending (EV_A_ (W)w);
2703 if (expect_false (!ev_is_active (w))) 4301 if (expect_false (!ev_is_active (w)))
2704 return; 4302 return;
2705 4303
4304 EV_FREQUENT_CHECK;
4305
2706 { 4306 {
2707 int active = ev_active (w); 4307 int active = ev_active (w);
2708 4308
2709 asyncs [active - 1] = asyncs [--asynccnt]; 4309 asyncs [active - 1] = asyncs [--asynccnt];
2710 ev_active (asyncs [active - 1]) = active; 4310 ev_active (asyncs [active - 1]) = active;
2711 } 4311 }
2712 4312
2713 ev_stop (EV_A_ (W)w); 4313 ev_stop (EV_A_ (W)w);
4314
4315 EV_FREQUENT_CHECK;
2714} 4316}
2715 4317
2716void 4318void
2717ev_async_send (EV_P_ ev_async *w) 4319ev_async_send (EV_P_ ev_async *w) EV_THROW
2718{ 4320{
2719 w->sent = 1; 4321 w->sent = 1;
2720 evpipe_write (EV_A_ &gotasync); 4322 evpipe_write (EV_A_ &async_pending);
2721} 4323}
2722#endif 4324#endif
2723 4325
2724/*****************************************************************************/ 4326/*****************************************************************************/
2725 4327
… …
2735once_cb (EV_P_ struct ev_once *once, int revents) 4337once_cb (EV_P_ struct ev_once *once, int revents)
2736{ 4338{
2737 void (*cb)(int revents, void *arg) = once->cb; 4339 void (*cb)(int revents, void *arg) = once->cb;
2738 void *arg = once->arg; 4340 void *arg = once->arg;
2739 4341
2740 ev_io_stop (EV_A_ &once->io); 4342 ev_io_stop (EV_A_ &once->io);
2741 ev_timer_stop (EV_A_ &once->to); 4343 ev_timer_stop (EV_A_ &once->to);
2742 ev_free (once); 4344 ev_free (once);
2743 4345
2744 cb (revents, arg); 4346 cb (revents, arg);
2745} 4347}
2746 4348
2747static void 4349static void
2748once_cb_io (EV_P_ ev_io *w, int revents) 4350once_cb_io (EV_P_ ev_io *w, int revents)
2749{ 4351{
2750 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 4352 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
4353
4354 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2751} 4355}
2752 4356
2753static void 4357static void
2754once_cb_to (EV_P_ ev_timer *w, int revents) 4358once_cb_to (EV_P_ ev_timer *w, int revents)
2755{ 4359{
2756 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 4360 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
4361
4362 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2757} 4363}
2758 4364
2759void 4365void
2760ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4366ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
2761{ 4367{
2762 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4368 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2763 4369
2764 if (expect_false (!once)) 4370 if (expect_false (!once))
2765 { 4371 {
2766 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4372 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2767 return; 4373 return;
2768 } 4374 }
2769 4375
2770 once->cb = cb; 4376 once->cb = cb;
2771 once->arg = arg; 4377 once->arg = arg;
… …
2783 ev_timer_set (&once->to, timeout, 0.); 4389 ev_timer_set (&once->to, timeout, 0.);
2784 ev_timer_start (EV_A_ &once->to); 4390 ev_timer_start (EV_A_ &once->to);
2785 } 4391 }
2786} 4392}
2787 4393
4394/*****************************************************************************/
4395
4396#if EV_WALK_ENABLE
4397void ecb_cold
4398ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4399{
4400 int i, j;
4401 ev_watcher_list *wl, *wn;
4402
4403 if (types & (EV_IO | EV_EMBED))
4404 for (i = 0; i < anfdmax; ++i)
4405 for (wl = anfds [i].head; wl; )
4406 {
4407 wn = wl->next;
4408
4409#if EV_EMBED_ENABLE
4410 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4411 {
4412 if (types & EV_EMBED)
4413 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4414 }
4415 else
4416#endif
4417#if EV_USE_INOTIFY
4418 if (ev_cb ((ev_io *)wl) == infy_cb)
4419 ;
4420 else
4421#endif
4422 if ((ev_io *)wl != &pipe_w)
4423 if (types & EV_IO)
4424 cb (EV_A_ EV_IO, wl);
4425
4426 wl = wn;
4427 }
4428
4429 if (types & (EV_TIMER | EV_STAT))
4430 for (i = timercnt + HEAP0; i-- > HEAP0; )
4431#if EV_STAT_ENABLE
4432 /*TODO: timer is not always active*/
4433 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4434 {
4435 if (types & EV_STAT)
4436 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4437 }
4438 else
4439#endif
4440 if (types & EV_TIMER)
4441 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4442
4443#if EV_PERIODIC_ENABLE
4444 if (types & EV_PERIODIC)
4445 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4446 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4447#endif
4448
4449#if EV_IDLE_ENABLE
4450 if (types & EV_IDLE)
4451 for (j = NUMPRI; j--; )
4452 for (i = idlecnt [j]; i--; )
4453 cb (EV_A_ EV_IDLE, idles [j][i]);
4454#endif
4455
4456#if EV_FORK_ENABLE
4457 if (types & EV_FORK)
4458 for (i = forkcnt; i--; )
4459 if (ev_cb (forks [i]) != embed_fork_cb)
4460 cb (EV_A_ EV_FORK, forks [i]);
4461#endif
4462
4463#if EV_ASYNC_ENABLE
4464 if (types & EV_ASYNC)
4465 for (i = asynccnt; i--; )
4466 cb (EV_A_ EV_ASYNC, asyncs [i]);
4467#endif
4468
4469#if EV_PREPARE_ENABLE
4470 if (types & EV_PREPARE)
4471 for (i = preparecnt; i--; )
4472# if EV_EMBED_ENABLE
4473 if (ev_cb (prepares [i]) != embed_prepare_cb)
4474# endif
4475 cb (EV_A_ EV_PREPARE, prepares [i]);
4476#endif
4477
4478#if EV_CHECK_ENABLE
4479 if (types & EV_CHECK)
4480 for (i = checkcnt; i--; )
4481 cb (EV_A_ EV_CHECK, checks [i]);
4482#endif
4483
4484#if EV_SIGNAL_ENABLE
4485 if (types & EV_SIGNAL)
4486 for (i = 0; i < EV_NSIG - 1; ++i)
4487 for (wl = signals [i].head; wl; )
4488 {
4489 wn = wl->next;
4490 cb (EV_A_ EV_SIGNAL, wl);
4491 wl = wn;
4492 }
4493#endif
4494
4495#if EV_CHILD_ENABLE
4496 if (types & EV_CHILD)
4497 for (i = (EV_PID_HASHSIZE); i--; )
4498 for (wl = childs [i]; wl; )
4499 {
4500 wn = wl->next;
4501 cb (EV_A_ EV_CHILD, wl);
4502 wl = wn;
4503 }
4504#endif
4505/* EV_STAT 0x00001000 /* stat data changed */
4506/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4507}
4508#endif
4509
2788#if EV_MULTIPLICITY 4510#if EV_MULTIPLICITY
2789 #include "ev_wrap.h" 4511 #include "ev_wrap.h"
2790#endif 4512#endif
2791 4513
2792#ifdef __cplusplus
2793}
2794#endif
2795

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