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Comparing libev/ev.c (file contents):
Revision 1.250 by root, Thu May 22 02:44:57 2008 UTC vs.
Revision 1.425 by root, Sun May 6 13:09:35 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
154# endif
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
130# endif 163# endif
131 164
132#endif 165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
152#endif 197#endif
153 198
154#ifndef _WIN32 199#ifndef _WIN32
155# include <sys/time.h> 200# include <sys/time.h>
156# include <sys/wait.h> 201# include <sys/wait.h>
157# include <unistd.h> 202# include <unistd.h>
158#else 203#else
204# include <io.h>
159# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 206# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
163# endif 209# endif
210# undef EV_AVOID_STDIO
164#endif 211#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
165 220
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
167 222
223/* try to deduce the maximum number of signals on this platform */
224#if defined EV_NSIG
225/* use what's provided */
226#elif defined NSIG
227# define EV_NSIG (NSIG)
228#elif defined _NSIG
229# define EV_NSIG (_NSIG)
230#elif defined SIGMAX
231# define EV_NSIG (SIGMAX+1)
232#elif defined SIG_MAX
233# define EV_NSIG (SIG_MAX+1)
234#elif defined _SIG_MAX
235# define EV_NSIG (_SIG_MAX+1)
236#elif defined MAXSIG
237# define EV_NSIG (MAXSIG+1)
238#elif defined MAX_SIG
239# define EV_NSIG (MAX_SIG+1)
240#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else
245# error "unable to find value for NSIG, please report"
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
254
255#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else
259# define EV_USE_CLOCK_SYSCALL 0
260# endif
261#endif
262
168#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
265# define EV_USE_MONOTONIC EV_FEATURE_OS
266# else
169# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
268# endif
170#endif 269#endif
171 270
172#ifndef EV_USE_REALTIME 271#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 273#endif
175 274
176#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
276# if _POSIX_C_SOURCE >= 199309L
277# define EV_USE_NANOSLEEP EV_FEATURE_OS
278# else
177# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
280# endif
178#endif 281#endif
179 282
180#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 285#endif
183 286
184#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
185# ifdef _WIN32 288# ifdef _WIN32
186# define EV_USE_POLL 0 289# define EV_USE_POLL 0
187# else 290# else
188# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 292# endif
190#endif 293#endif
191 294
192#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 298# else
196# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
197# endif 300# endif
198#endif 301#endif
199 302
… …
205# define EV_USE_PORT 0 308# define EV_USE_PORT 0
206#endif 309#endif
207 310
208#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 314# else
212# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
213# endif 316# endif
214#endif 317#endif
215 318
216#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 321#endif
223 322
224#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 325#endif
231 326
232#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 330# else
236# define EV_USE_EVENTFD 0 331# define EV_USE_EVENTFD 0
332# endif
333#endif
334
335#ifndef EV_USE_SIGNALFD
336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
337# define EV_USE_SIGNALFD EV_FEATURE_OS
338# else
339# define EV_USE_SIGNALFD 0
237# endif 340# endif
238#endif 341#endif
239 342
240#if 0 /* debugging */ 343#if 0 /* debugging */
241# define EV_VERIFY 3 344# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
244#endif 347#endif
245 348
246#ifndef EV_VERIFY 349#ifndef EV_VERIFY
247# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
248#endif 351#endif
249 352
250#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
251# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
252#endif 355#endif
253 356
254#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
255# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif
360
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL
364# include <sys/syscall.h>
365# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1
369# else
370# undef EV_USE_CLOCK_SYSCALL
371# define EV_USE_CLOCK_SYSCALL 0
372# endif
256#endif 373#endif
257 374
258/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 375/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
259 382
260#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
261# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
262# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
263#endif 386#endif
… …
271# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
272# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
273#endif 396#endif
274 397
275#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
276# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
277# include <sys/select.h> 401# include <sys/select.h>
278# endif 402# endif
279#endif 403#endif
280 404
281#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
406# include <sys/statfs.h>
282# include <sys/inotify.h> 407# include <sys/inotify.h>
408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0
412# endif
283#endif 413#endif
284 414
285#if EV_SELECT_IS_WINSOCKET 415#if EV_SELECT_IS_WINSOCKET
286# include <winsock.h> 416# include <winsock.h>
287#endif 417#endif
288 418
289#if EV_USE_EVENTFD 419#if EV_USE_EVENTFD
290/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
291# include <stdint.h> 421# include <stdint.h>
292# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
293extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
294# endif 424# endif
295int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
296# ifdef __cplusplus 426# ifdef O_CLOEXEC
297} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
298# endif 431# endif
432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
433#endif
434
435#if EV_USE_SIGNALFD
436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
437# include <stdint.h>
438# ifndef SFD_NONBLOCK
439# define SFD_NONBLOCK O_NONBLOCK
440# endif
441# ifndef SFD_CLOEXEC
442# ifdef O_CLOEXEC
443# define SFD_CLOEXEC O_CLOEXEC
444# else
445# define SFD_CLOEXEC 02000000
446# endif
447# endif
448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
449
450struct signalfd_siginfo
451{
452 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)];
454};
299#endif 455#endif
300 456
301/**/ 457/**/
302 458
303#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
305#else 461#else
306# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
307#endif 463#endif
308 464
309/* 465/*
310 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
311 * It is added to ev_rt_now when scheduling periodics
312 * to ensure progress, time-wise, even when rounding
313 * errors are against us.
314 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
315 * Better solutions welcome.
316 */ 468 */
317#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
318 471
319#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
320#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
321/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
322 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
323#if __GNUC__ >= 4 519 #if __GNUC__
324# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
325# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
326#else 526#else
327# define expect(expr,value) (expr) 527 #include <inttypes.h>
328# define noinline
329# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
330# define inline
331# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
332#endif 542 #endif
543#endif
333 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
586 #endif
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
600 #elif defined _WIN32
601 #include <WinNT.h>
602 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
603 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
604 #include <mbarrier.h>
605 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
606 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
607 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
608 #elif __xlC__
609 #define ECB_MEMORY_FENCE __sync ()
610 #endif
611#endif
612
613#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS
615 /*
616 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler
619 * OR provide pthread.h and link against the posix thread library
620 * of your system.
621 */
622 #include <pthread.h>
623 #define ECB_NEEDS_PTHREADS 1
624 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
625
626 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
627 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
628 #endif
629#endif
630
631#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
633#endif
634
635#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif
638
639/*****************************************************************************/
640
641#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643#if __cplusplus
644 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__
647#elif ECB_C99
648 #define ecb_inline static inline
649#else
650 #define ecb_inline static
651#endif
652
653#if ECB_GCC_VERSION(3,3)
654 #define ecb_restrict __restrict__
655#elif ECB_C99
656 #define ecb_restrict restrict
657#else
658 #define ecb_restrict
659#endif
660
661typedef int ecb_bool;
662
663#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
667
668#define ecb_function_ ecb_inline
669
670#if ECB_GCC_VERSION(3,1)
671 #define ecb_attribute(attrlist) __attribute__(attrlist)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality)
680#endif
681
682/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5)
684 #define ecb_decltype(x) __decltype(x)
685#elif ECB_GCC_VERSION(3,0)
686 #define ecb_decltype(x) __typeof(x)
687#endif
688
689#define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__))
691#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__))
694
695#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__))
699#else
700 #define ecb_artificial
701 #define ecb_hot
702 #define ecb_cold
703#endif
704
705/* put around conditional expressions if you are very sure that the */
706/* expression is mostly true or mostly false. note that these return */
707/* booleans, not the expression. */
334#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
335#define expect_true(expr) expect ((expr) != 0, 1) 709#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
710/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr)
713
714/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4)
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */
723#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
725 ecb_function_ int
726 ecb_ctz32 (uint32_t x)
727 {
728 int r = 0;
729
730 x &= ~x + 1; /* this isolates the lowest bit */
731
732#if ECB_branchless_on_i386
733 r += !!(x & 0xaaaaaaaa) << 0;
734 r += !!(x & 0xcccccccc) << 1;
735 r += !!(x & 0xf0f0f0f0) << 2;
736 r += !!(x & 0xff00ff00) << 3;
737 r += !!(x & 0xffff0000) << 4;
738#else
739 if (x & 0xaaaaaaaa) r += 1;
740 if (x & 0xcccccccc) r += 2;
741 if (x & 0xf0f0f0f0) r += 4;
742 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16;
744#endif
745
746 return r;
747 }
748
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
750 ecb_function_ int
751 ecb_ctz64 (uint64_t x)
752 {
753 int shift = x & 0xffffffffU ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift;
755 }
756
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
758 ecb_function_ int
759 ecb_popcount32 (uint32_t x)
760 {
761 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101;
765
766 return x >> 24;
767 }
768
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
770 ecb_function_ int ecb_ld32 (uint32_t x)
771 {
772 int r = 0;
773
774 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; }
779
780 return r;
781 }
782
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
784 ecb_function_ int ecb_ld64 (uint64_t x)
785 {
786 int r = 0;
787
788 if (x >> 32) { x >>= 32; r += 32; }
789
790 return r + ecb_ld32 (x);
791 }
792#endif
793
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796{
797 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799}
800
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
803{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8);
808
809 return x;
810}
811
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
814{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
819 x = ( x >> 16 ) | ( x << 16);
820
821 return x;
822}
823
824/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
827ecb_function_ int
828ecb_popcount64 (uint64_t x)
829{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831}
832
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
841
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850
851#if ECB_GCC_VERSION(4,3)
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
853 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x)
855#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
857 ecb_function_ uint16_t
858 ecb_bswap16 (uint16_t x)
859 {
860 return ecb_rotl16 (x, 8);
861 }
862
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
864 ecb_function_ uint32_t
865 ecb_bswap32 (uint32_t x)
866 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 }
869
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
871 ecb_function_ uint64_t
872 ecb_bswap64 (uint64_t x)
873 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 }
876#endif
877
878#if ECB_GCC_VERSION(4,5)
879 #define ecb_unreachable() __builtin_unreachable ()
880#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn;
883 ecb_inline void ecb_unreachable (void) { }
884#endif
885
886/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
888
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890ecb_inline unsigned char
891ecb_byteorder_helper (void)
892{
893 const uint32_t u = 0x11223344;
894 return *(unsigned char *)&u;
895}
896
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
901
902#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif
907
908#if __cplusplus
909 template<typename T>
910 static inline T ecb_div_rd (T val, T div)
911 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 }
914 template<typename T>
915 static inline T ecb_div_ru (T val, T div)
916 {
917 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
918 }
919#else
920 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
921 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
922#endif
923
924#if ecb_cplusplus_does_not_suck
925 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
926 template<typename T, int N>
927 static inline int ecb_array_length (const T (&arr)[N])
928 {
929 return N;
930 }
931#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif
934
935#endif
936
937/* ECB.H END */
938
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
940/* if your architecture doesn't need memory fences, e.g. because it is
941 * single-cpu/core, or if you use libev in a project that doesn't use libev
942 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
943 * libev, in which cases the memory fences become nops.
944 * alternatively, you can remove this #error and link against libpthread,
945 * which will then provide the memory fences.
946 */
947# error "memory fences not defined for your architecture, please report"
948#endif
949
950#ifndef ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE do { } while (0)
952# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
953# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
954#endif
955
956#define expect_false(cond) ecb_expect_false (cond)
957#define expect_true(cond) ecb_expect_true (cond)
958#define noinline ecb_noinline
959
336#define inline_size static inline 960#define inline_size ecb_inline
337 961
338#if EV_MINIMAL 962#if EV_FEATURE_CODE
963# define inline_speed ecb_inline
964#else
339# define inline_speed static noinline 965# define inline_speed static noinline
966#endif
967
968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
969
970#if EV_MINPRI == EV_MAXPRI
971# define ABSPRI(w) (((W)w), 0)
340#else 972#else
341# define inline_speed static inline
342#endif
343
344#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 973# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
974#endif
346 975
347#define EMPTY /* required for microsofts broken pseudo-c compiler */ 976#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */ 977#define EMPTY2(a,b) /* used to suppress some warnings */
349 978
350typedef ev_watcher *W; 979typedef ev_watcher *W;
… …
352typedef ev_watcher_time *WT; 981typedef ev_watcher_time *WT;
353 982
354#define ev_active(w) ((W)(w))->active 983#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at 984#define ev_at(w) ((WT)(w))->at
356 985
986#if EV_USE_REALTIME
987/* sig_atomic_t is used to avoid per-thread variables or locking but still */
988/* giving it a reasonably high chance of working on typical architectures */
989static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
990#endif
991
357#if EV_USE_MONOTONIC 992#if EV_USE_MONOTONIC
358/* sig_atomic_t is used to avoid per-thread variables or locking but still */
359/* giving it a reasonably high chance of working on typical architetcures */
360static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 993static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
994#endif
995
996#ifndef EV_FD_TO_WIN32_HANDLE
997# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
998#endif
999#ifndef EV_WIN32_HANDLE_TO_FD
1000# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1001#endif
1002#ifndef EV_WIN32_CLOSE_FD
1003# define EV_WIN32_CLOSE_FD(fd) close (fd)
361#endif 1004#endif
362 1005
363#ifdef _WIN32 1006#ifdef _WIN32
364# include "ev_win32.c" 1007# include "ev_win32.c"
365#endif 1008#endif
366 1009
367/*****************************************************************************/ 1010/*****************************************************************************/
368 1011
1012/* define a suitable floor function (only used by periodics atm) */
1013
1014#if EV_USE_FLOOR
1015# include <math.h>
1016# define ev_floor(v) floor (v)
1017#else
1018
1019#include <float.h>
1020
1021/* a floor() replacement function, should be independent of ev_tstamp type */
1022static ev_tstamp noinline
1023ev_floor (ev_tstamp v)
1024{
1025 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1028#else
1029 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1030#endif
1031
1032 /* argument too large for an unsigned long? */
1033 if (expect_false (v >= shift))
1034 {
1035 ev_tstamp f;
1036
1037 if (v == v - 1.)
1038 return v; /* very large number */
1039
1040 f = shift * ev_floor (v * (1. / shift));
1041 return f + ev_floor (v - f);
1042 }
1043
1044 /* special treatment for negative args? */
1045 if (expect_false (v < 0.))
1046 {
1047 ev_tstamp f = -ev_floor (-v);
1048
1049 return f - (f == v ? 0 : 1);
1050 }
1051
1052 /* fits into an unsigned long */
1053 return (unsigned long)v;
1054}
1055
1056#endif
1057
1058/*****************************************************************************/
1059
1060#ifdef __linux
1061# include <sys/utsname.h>
1062#endif
1063
1064static unsigned int noinline ecb_cold
1065ev_linux_version (void)
1066{
1067#ifdef __linux
1068 unsigned int v = 0;
1069 struct utsname buf;
1070 int i;
1071 char *p = buf.release;
1072
1073 if (uname (&buf))
1074 return 0;
1075
1076 for (i = 3+1; --i; )
1077 {
1078 unsigned int c = 0;
1079
1080 for (;;)
1081 {
1082 if (*p >= '0' && *p <= '9')
1083 c = c * 10 + *p++ - '0';
1084 else
1085 {
1086 p += *p == '.';
1087 break;
1088 }
1089 }
1090
1091 v = (v << 8) | c;
1092 }
1093
1094 return v;
1095#else
1096 return 0;
1097#endif
1098}
1099
1100/*****************************************************************************/
1101
1102#if EV_AVOID_STDIO
1103static void noinline ecb_cold
1104ev_printerr (const char *msg)
1105{
1106 write (STDERR_FILENO, msg, strlen (msg));
1107}
1108#endif
1109
369static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg) EV_THROW;
370 1111
371void 1112void ecb_cold
372ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
373{ 1114{
374 syserr_cb = cb; 1115 syserr_cb = cb;
375} 1116}
376 1117
377static void noinline 1118static void noinline ecb_cold
378syserr (const char *msg) 1119ev_syserr (const char *msg)
379{ 1120{
380 if (!msg) 1121 if (!msg)
381 msg = "(libev) system error"; 1122 msg = "(libev) system error";
382 1123
383 if (syserr_cb) 1124 if (syserr_cb)
384 syserr_cb (msg); 1125 syserr_cb (msg);
385 else 1126 else
386 { 1127 {
1128#if EV_AVOID_STDIO
1129 ev_printerr (msg);
1130 ev_printerr (": ");
1131 ev_printerr (strerror (errno));
1132 ev_printerr ("\n");
1133#else
387 perror (msg); 1134 perror (msg);
1135#endif
388 abort (); 1136 abort ();
389 } 1137 }
390} 1138}
391 1139
392static void * 1140static void *
393ev_realloc_emul (void *ptr, long size) 1141ev_realloc_emul (void *ptr, long size)
394{ 1142{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
395 /* some systems, notably openbsd and darwin, fail to properly 1146 /* some systems, notably openbsd and darwin, fail to properly
396 * implement realloc (x, 0) (as required by both ansi c-98 and 1147 * implement realloc (x, 0) (as required by both ansi c-89 and
397 * the single unix specification, so work around them here. 1148 * the single unix specification, so work around them here.
398 */ 1149 */
399 1150
400 if (size) 1151 if (size)
401 return realloc (ptr, size); 1152 return realloc (ptr, size);
402 1153
403 free (ptr); 1154 free (ptr);
404 return 0; 1155 return 0;
1156#endif
405} 1157}
406 1158
407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
408 1160
409void 1161void ecb_cold
410ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
411{ 1163{
412 alloc = cb; 1164 alloc = cb;
413} 1165}
414 1166
415inline_speed void * 1167inline_speed void *
… …
417{ 1169{
418 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
419 1171
420 if (!ptr && size) 1172 if (!ptr && size)
421 { 1173 {
1174#if EV_AVOID_STDIO
1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1176#else
422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1178#endif
423 abort (); 1179 abort ();
424 } 1180 }
425 1181
426 return ptr; 1182 return ptr;
427} 1183}
… …
429#define ev_malloc(size) ev_realloc (0, (size)) 1185#define ev_malloc(size) ev_realloc (0, (size))
430#define ev_free(ptr) ev_realloc ((ptr), 0) 1186#define ev_free(ptr) ev_realloc ((ptr), 0)
431 1187
432/*****************************************************************************/ 1188/*****************************************************************************/
433 1189
1190/* set in reify when reification needed */
1191#define EV_ANFD_REIFY 1
1192
1193/* file descriptor info structure */
434typedef struct 1194typedef struct
435{ 1195{
436 WL head; 1196 WL head;
437 unsigned char events; 1197 unsigned char events; /* the events watched for */
1198 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1199 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
438 unsigned char reify; 1200 unsigned char unused;
1201#if EV_USE_EPOLL
1202 unsigned int egen; /* generation counter to counter epoll bugs */
1203#endif
439#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
440 SOCKET handle; 1205 SOCKET handle;
441#endif 1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
1209#endif
442} ANFD; 1210} ANFD;
443 1211
1212/* stores the pending event set for a given watcher */
444typedef struct 1213typedef struct
445{ 1214{
446 W w; 1215 W w;
447 int events; 1216 int events; /* the pending event set for the given watcher */
448} ANPENDING; 1217} ANPENDING;
449 1218
450#if EV_USE_INOTIFY 1219#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */ 1220/* hash table entry per inotify-id */
452typedef struct 1221typedef struct
… …
455} ANFS; 1224} ANFS;
456#endif 1225#endif
457 1226
458/* Heap Entry */ 1227/* Heap Entry */
459#if EV_HEAP_CACHE_AT 1228#if EV_HEAP_CACHE_AT
1229 /* a heap element */
460 typedef struct { 1230 typedef struct {
461 ev_tstamp at; 1231 ev_tstamp at;
462 WT w; 1232 WT w;
463 } ANHE; 1233 } ANHE;
464 1234
465 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1235 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1236 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1237 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468#else 1238#else
1239 /* a heap element */
469 typedef WT ANHE; 1240 typedef WT ANHE;
470 1241
471 #define ANHE_w(he) (he) 1242 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at 1243 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he) 1244 #define ANHE_at_cache(he)
… …
484 #undef VAR 1255 #undef VAR
485 }; 1256 };
486 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
487 1258
488 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
489 struct ev_loop *ev_default_loop_ptr; 1260 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
490 1261
491#else 1262#else
492 1263
493 ev_tstamp ev_rt_now; 1264 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
494 #define VAR(name,decl) static decl; 1265 #define VAR(name,decl) static decl;
495 #include "ev_vars.h" 1266 #include "ev_vars.h"
496 #undef VAR 1267 #undef VAR
497 1268
498 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
499 1270
500#endif 1271#endif
501 1272
1273#if EV_FEATURE_API
1274# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1275# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1276# define EV_INVOKE_PENDING invoke_cb (EV_A)
1277#else
1278# define EV_RELEASE_CB (void)0
1279# define EV_ACQUIRE_CB (void)0
1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1281#endif
1282
1283#define EVBREAK_RECURSE 0x80
1284
502/*****************************************************************************/ 1285/*****************************************************************************/
503 1286
1287#ifndef EV_HAVE_EV_TIME
504ev_tstamp 1288ev_tstamp
505ev_time (void) 1289ev_time (void) EV_THROW
506{ 1290{
507#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
1292 if (expect_true (have_realtime))
1293 {
508 struct timespec ts; 1294 struct timespec ts;
509 clock_gettime (CLOCK_REALTIME, &ts); 1295 clock_gettime (CLOCK_REALTIME, &ts);
510 return ts.tv_sec + ts.tv_nsec * 1e-9; 1296 return ts.tv_sec + ts.tv_nsec * 1e-9;
511#else 1297 }
1298#endif
1299
512 struct timeval tv; 1300 struct timeval tv;
513 gettimeofday (&tv, 0); 1301 gettimeofday (&tv, 0);
514 return tv.tv_sec + tv.tv_usec * 1e-6; 1302 return tv.tv_sec + tv.tv_usec * 1e-6;
515#endif
516} 1303}
1304#endif
517 1305
518ev_tstamp inline_size 1306inline_size ev_tstamp
519get_clock (void) 1307get_clock (void)
520{ 1308{
521#if EV_USE_MONOTONIC 1309#if EV_USE_MONOTONIC
522 if (expect_true (have_monotonic)) 1310 if (expect_true (have_monotonic))
523 { 1311 {
… …
530 return ev_time (); 1318 return ev_time ();
531} 1319}
532 1320
533#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
534ev_tstamp 1322ev_tstamp
535ev_now (EV_P) 1323ev_now (EV_P) EV_THROW
536{ 1324{
537 return ev_rt_now; 1325 return ev_rt_now;
538} 1326}
539#endif 1327#endif
540 1328
541void 1329void
542ev_sleep (ev_tstamp delay) 1330ev_sleep (ev_tstamp delay) EV_THROW
543{ 1331{
544 if (delay > 0.) 1332 if (delay > 0.)
545 { 1333 {
546#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
547 struct timespec ts; 1335 struct timespec ts;
548 1336
549 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
550 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
551
552 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
553#elif defined(_WIN32) 1339#elif defined _WIN32
554 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
555#else 1341#else
556 struct timeval tv; 1342 struct timeval tv;
557 1343
558 tv.tv_sec = (time_t)delay; 1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 1345 /* something not guaranteed by newer posix versions, but guaranteed */
560 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
561 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
562#endif 1349#endif
563 } 1350 }
564} 1351}
565 1352
566/*****************************************************************************/ 1353/*****************************************************************************/
567 1354
568#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1355#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569 1356
570int inline_size 1357/* find a suitable new size for the given array, */
1358/* hopefully by rounding to a nice-to-malloc size */
1359inline_size int
571array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
572{ 1361{
573 int ncur = cur + 1; 1362 int ncur = cur + 1;
574 1363
575 do 1364 do
576 ncur <<= 1; 1365 ncur <<= 1;
577 while (cnt > ncur); 1366 while (cnt > ncur);
578 1367
579 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1368 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
580 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
581 { 1370 {
582 ncur *= elem; 1371 ncur *= elem;
583 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1372 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
584 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
586 } 1375 }
587 1376
588 return ncur; 1377 return ncur;
589} 1378}
590 1379
591static noinline void * 1380static void * noinline ecb_cold
592array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
593{ 1382{
594 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
596} 1385}
1386
1387#define array_init_zero(base,count) \
1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
597 1389
598#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
599 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
600 { \ 1392 { \
601 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
602 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
603 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
604 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
605 } 1397 }
606 1398
… …
613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1405 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614 } 1406 }
615#endif 1407#endif
616 1408
617#define array_free(stem, idx) \ 1409#define array_free(stem, idx) \
618 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1410 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
619 1411
620/*****************************************************************************/ 1412/*****************************************************************************/
621 1413
1414/* dummy callback for pending events */
1415static void noinline
1416pendingcb (EV_P_ ev_prepare *w, int revents)
1417{
1418}
1419
622void noinline 1420void noinline
623ev_feed_event (EV_P_ void *w, int revents) 1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW
624{ 1422{
625 W w_ = (W)w; 1423 W w_ = (W)w;
626 int pri = ABSPRI (w_); 1424 int pri = ABSPRI (w_);
627 1425
628 if (expect_false (w_->pending)) 1426 if (expect_false (w_->pending))
… …
632 w_->pending = ++pendingcnt [pri]; 1430 w_->pending = ++pendingcnt [pri];
633 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
634 pendings [pri][w_->pending - 1].w = w_; 1432 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents; 1433 pendings [pri][w_->pending - 1].events = revents;
636 } 1434 }
637}
638 1435
639void inline_speed 1436 pendingpri = NUMPRI - 1;
1437}
1438
1439inline_speed void
1440feed_reverse (EV_P_ W w)
1441{
1442 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1443 rfeeds [rfeedcnt++] = w;
1444}
1445
1446inline_size void
1447feed_reverse_done (EV_P_ int revents)
1448{
1449 do
1450 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1451 while (rfeedcnt);
1452}
1453
1454inline_speed void
640queue_events (EV_P_ W *events, int eventcnt, int type) 1455queue_events (EV_P_ W *events, int eventcnt, int type)
641{ 1456{
642 int i; 1457 int i;
643 1458
644 for (i = 0; i < eventcnt; ++i) 1459 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type); 1460 ev_feed_event (EV_A_ events [i], type);
646} 1461}
647 1462
648/*****************************************************************************/ 1463/*****************************************************************************/
649 1464
650void inline_size 1465inline_speed void
651anfds_init (ANFD *base, int count)
652{
653 while (count--)
654 {
655 base->head = 0;
656 base->events = EV_NONE;
657 base->reify = 0;
658
659 ++base;
660 }
661}
662
663void inline_speed
664fd_event (EV_P_ int fd, int revents) 1466fd_event_nocheck (EV_P_ int fd, int revents)
665{ 1467{
666 ANFD *anfd = anfds + fd; 1468 ANFD *anfd = anfds + fd;
667 ev_io *w; 1469 ev_io *w;
668 1470
669 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1471 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
673 if (ev) 1475 if (ev)
674 ev_feed_event (EV_A_ (W)w, ev); 1476 ev_feed_event (EV_A_ (W)w, ev);
675 } 1477 }
676} 1478}
677 1479
1480/* do not submit kernel events for fds that have reify set */
1481/* because that means they changed while we were polling for new events */
1482inline_speed void
1483fd_event (EV_P_ int fd, int revents)
1484{
1485 ANFD *anfd = anfds + fd;
1486
1487 if (expect_true (!anfd->reify))
1488 fd_event_nocheck (EV_A_ fd, revents);
1489}
1490
678void 1491void
679ev_feed_fd_event (EV_P_ int fd, int revents) 1492ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
680{ 1493{
681 if (fd >= 0 && fd < anfdmax) 1494 if (fd >= 0 && fd < anfdmax)
682 fd_event (EV_A_ fd, revents); 1495 fd_event_nocheck (EV_A_ fd, revents);
683} 1496}
684 1497
685void inline_size 1498/* make sure the external fd watch events are in-sync */
1499/* with the kernel/libev internal state */
1500inline_size void
686fd_reify (EV_P) 1501fd_reify (EV_P)
687{ 1502{
688 int i; 1503 int i;
1504
1505#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1506 for (i = 0; i < fdchangecnt; ++i)
1507 {
1508 int fd = fdchanges [i];
1509 ANFD *anfd = anfds + fd;
1510
1511 if (anfd->reify & EV__IOFDSET && anfd->head)
1512 {
1513 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1514
1515 if (handle != anfd->handle)
1516 {
1517 unsigned long arg;
1518
1519 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1520
1521 /* handle changed, but fd didn't - we need to do it in two steps */
1522 backend_modify (EV_A_ fd, anfd->events, 0);
1523 anfd->events = 0;
1524 anfd->handle = handle;
1525 }
1526 }
1527 }
1528#endif
689 1529
690 for (i = 0; i < fdchangecnt; ++i) 1530 for (i = 0; i < fdchangecnt; ++i)
691 { 1531 {
692 int fd = fdchanges [i]; 1532 int fd = fdchanges [i];
693 ANFD *anfd = anfds + fd; 1533 ANFD *anfd = anfds + fd;
694 ev_io *w; 1534 ev_io *w;
695 1535
696 unsigned char events = 0; 1536 unsigned char o_events = anfd->events;
1537 unsigned char o_reify = anfd->reify;
697 1538
698 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1539 anfd->reify = 0;
699 events |= (unsigned char)w->events;
700 1540
701#if EV_SELECT_IS_WINSOCKET 1541 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
702 if (events)
703 { 1542 {
704 unsigned long argp; 1543 anfd->events = 0;
705 #ifdef EV_FD_TO_WIN32_HANDLE 1544
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1545 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
707 #else 1546 anfd->events |= (unsigned char)w->events;
708 anfd->handle = _get_osfhandle (fd); 1547
709 #endif 1548 if (o_events != anfd->events)
710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1549 o_reify = EV__IOFDSET; /* actually |= */
711 } 1550 }
712#endif
713 1551
714 { 1552 if (o_reify & EV__IOFDSET)
715 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify;
717
718 anfd->reify = 0;
719 anfd->events = events;
720
721 if (o_events != events || o_reify & EV_IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events); 1553 backend_modify (EV_A_ fd, o_events, anfd->events);
723 }
724 } 1554 }
725 1555
726 fdchangecnt = 0; 1556 fdchangecnt = 0;
727} 1557}
728 1558
729void inline_size 1559/* something about the given fd changed */
1560inline_size void
730fd_change (EV_P_ int fd, int flags) 1561fd_change (EV_P_ int fd, int flags)
731{ 1562{
732 unsigned char reify = anfds [fd].reify; 1563 unsigned char reify = anfds [fd].reify;
733 anfds [fd].reify |= flags; 1564 anfds [fd].reify |= flags;
734 1565
… …
738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1569 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739 fdchanges [fdchangecnt - 1] = fd; 1570 fdchanges [fdchangecnt - 1] = fd;
740 } 1571 }
741} 1572}
742 1573
743void inline_speed 1574/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1575inline_speed void ecb_cold
744fd_kill (EV_P_ int fd) 1576fd_kill (EV_P_ int fd)
745{ 1577{
746 ev_io *w; 1578 ev_io *w;
747 1579
748 while ((w = (ev_io *)anfds [fd].head)) 1580 while ((w = (ev_io *)anfds [fd].head))
… …
750 ev_io_stop (EV_A_ w); 1582 ev_io_stop (EV_A_ w);
751 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
752 } 1584 }
753} 1585}
754 1586
755int inline_size 1587/* check whether the given fd is actually valid, for error recovery */
1588inline_size int ecb_cold
756fd_valid (int fd) 1589fd_valid (int fd)
757{ 1590{
758#ifdef _WIN32 1591#ifdef _WIN32
759 return _get_osfhandle (fd) != -1; 1592 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
760#else 1593#else
761 return fcntl (fd, F_GETFD) != -1; 1594 return fcntl (fd, F_GETFD) != -1;
762#endif 1595#endif
763} 1596}
764 1597
765/* called on EBADF to verify fds */ 1598/* called on EBADF to verify fds */
766static void noinline 1599static void noinline ecb_cold
767fd_ebadf (EV_P) 1600fd_ebadf (EV_P)
768{ 1601{
769 int fd; 1602 int fd;
770 1603
771 for (fd = 0; fd < anfdmax; ++fd) 1604 for (fd = 0; fd < anfdmax; ++fd)
772 if (anfds [fd].events) 1605 if (anfds [fd].events)
773 if (!fd_valid (fd) == -1 && errno == EBADF) 1606 if (!fd_valid (fd) && errno == EBADF)
774 fd_kill (EV_A_ fd); 1607 fd_kill (EV_A_ fd);
775} 1608}
776 1609
777/* called on ENOMEM in select/poll to kill some fds and retry */ 1610/* called on ENOMEM in select/poll to kill some fds and retry */
778static void noinline 1611static void noinline ecb_cold
779fd_enomem (EV_P) 1612fd_enomem (EV_P)
780{ 1613{
781 int fd; 1614 int fd;
782 1615
783 for (fd = anfdmax; fd--; ) 1616 for (fd = anfdmax; fd--; )
784 if (anfds [fd].events) 1617 if (anfds [fd].events)
785 { 1618 {
786 fd_kill (EV_A_ fd); 1619 fd_kill (EV_A_ fd);
787 return; 1620 break;
788 } 1621 }
789} 1622}
790 1623
791/* usually called after fork if backend needs to re-arm all fds from scratch */ 1624/* usually called after fork if backend needs to re-arm all fds from scratch */
792static void noinline 1625static void noinline
… …
796 1629
797 for (fd = 0; fd < anfdmax; ++fd) 1630 for (fd = 0; fd < anfdmax; ++fd)
798 if (anfds [fd].events) 1631 if (anfds [fd].events)
799 { 1632 {
800 anfds [fd].events = 0; 1633 anfds [fd].events = 0;
1634 anfds [fd].emask = 0;
801 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1635 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802 } 1636 }
803} 1637}
804 1638
1639/* used to prepare libev internal fd's */
1640/* this is not fork-safe */
1641inline_speed void
1642fd_intern (int fd)
1643{
1644#ifdef _WIN32
1645 unsigned long arg = 1;
1646 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1647#else
1648 fcntl (fd, F_SETFD, FD_CLOEXEC);
1649 fcntl (fd, F_SETFL, O_NONBLOCK);
1650#endif
1651}
1652
805/*****************************************************************************/ 1653/*****************************************************************************/
806 1654
807/* 1655/*
808 * the heap functions want a real array index. array index 0 uis guaranteed to not 1656 * the heap functions want a real array index. array index 0 is guaranteed to not
809 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1657 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
810 * the branching factor of the d-tree. 1658 * the branching factor of the d-tree.
811 */ 1659 */
812 1660
813/* 1661/*
… …
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1670#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1671#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k)) 1672#define UPHEAP_DONE(p,k) ((p) == (k))
825 1673
826/* away from the root */ 1674/* away from the root */
827void inline_speed 1675inline_speed void
828downheap (ANHE *heap, int N, int k) 1676downheap (ANHE *heap, int N, int k)
829{ 1677{
830 ANHE he = heap [k]; 1678 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0; 1679 ANHE *E = heap + N + HEAP0;
832 1680
… …
872#define HEAP0 1 1720#define HEAP0 1
873#define HPARENT(k) ((k) >> 1) 1721#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p)) 1722#define UPHEAP_DONE(p,k) (!(p))
875 1723
876/* away from the root */ 1724/* away from the root */
877void inline_speed 1725inline_speed void
878downheap (ANHE *heap, int N, int k) 1726downheap (ANHE *heap, int N, int k)
879{ 1727{
880 ANHE he = heap [k]; 1728 ANHE he = heap [k];
881 1729
882 for (;;) 1730 for (;;)
883 { 1731 {
884 int c = k << 1; 1732 int c = k << 1;
885 1733
886 if (c > N + HEAP0 - 1) 1734 if (c >= N + HEAP0)
887 break; 1735 break;
888 1736
889 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1737 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
890 ? 1 : 0; 1738 ? 1 : 0;
891 1739
… …
902 ev_active (ANHE_w (he)) = k; 1750 ev_active (ANHE_w (he)) = k;
903} 1751}
904#endif 1752#endif
905 1753
906/* towards the root */ 1754/* towards the root */
907void inline_speed 1755inline_speed void
908upheap (ANHE *heap, int k) 1756upheap (ANHE *heap, int k)
909{ 1757{
910 ANHE he = heap [k]; 1758 ANHE he = heap [k];
911 1759
912 for (;;) 1760 for (;;)
… …
923 1771
924 heap [k] = he; 1772 heap [k] = he;
925 ev_active (ANHE_w (he)) = k; 1773 ev_active (ANHE_w (he)) = k;
926} 1774}
927 1775
928void inline_size 1776/* move an element suitably so it is in a correct place */
1777inline_size void
929adjustheap (ANHE *heap, int N, int k) 1778adjustheap (ANHE *heap, int N, int k)
930{ 1779{
931 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1780 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
932 upheap (heap, k); 1781 upheap (heap, k);
933 else 1782 else
934 downheap (heap, N, k); 1783 downheap (heap, N, k);
935} 1784}
936 1785
937/* rebuild the heap: this function is used only once and executed rarely */ 1786/* rebuild the heap: this function is used only once and executed rarely */
938void inline_size 1787inline_size void
939reheap (ANHE *heap, int N) 1788reheap (ANHE *heap, int N)
940{ 1789{
941 int i; 1790 int i;
1791
942 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1792 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
943 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ 1793 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
944 for (i = 0; i < N; ++i) 1794 for (i = 0; i < N; ++i)
945 upheap (heap, i + HEAP0); 1795 upheap (heap, i + HEAP0);
946} 1796}
947 1797
948#if EV_VERIFY
949static void
950checkheap (ANHE *heap, int N)
951{
952 int i;
953
954 for (i = HEAP0; i < N + HEAP0; ++i)
955 {
956 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
957 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
958 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
959 }
960}
961#endif
962
963/*****************************************************************************/ 1798/*****************************************************************************/
964 1799
1800/* associate signal watchers to a signal signal */
965typedef struct 1801typedef struct
966{ 1802{
1803 EV_ATOMIC_T pending;
1804#if EV_MULTIPLICITY
1805 EV_P;
1806#endif
967 WL head; 1807 WL head;
968 EV_ATOMIC_T gotsig;
969} ANSIG; 1808} ANSIG;
970 1809
971static ANSIG *signals; 1810static ANSIG signals [EV_NSIG - 1];
972static int signalmax;
973
974static EV_ATOMIC_T gotsig;
975
976void inline_size
977signals_init (ANSIG *base, int count)
978{
979 while (count--)
980 {
981 base->head = 0;
982 base->gotsig = 0;
983
984 ++base;
985 }
986}
987 1811
988/*****************************************************************************/ 1812/*****************************************************************************/
989 1813
990void inline_speed 1814#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
991fd_intern (int fd)
992{
993#ifdef _WIN32
994 int arg = 1;
995 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
996#else
997 fcntl (fd, F_SETFD, FD_CLOEXEC);
998 fcntl (fd, F_SETFL, O_NONBLOCK);
999#endif
1000}
1001 1815
1002static void noinline 1816static void noinline ecb_cold
1003evpipe_init (EV_P) 1817evpipe_init (EV_P)
1004{ 1818{
1005 if (!ev_is_active (&pipeev)) 1819 if (!ev_is_active (&pipe_w))
1006 { 1820 {
1007#if EV_USE_EVENTFD 1821# if EV_USE_EVENTFD
1822 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1823 if (evfd < 0 && errno == EINVAL)
1008 if ((evfd = eventfd (0, 0)) >= 0) 1824 evfd = eventfd (0, 0);
1825
1826 if (evfd >= 0)
1009 { 1827 {
1010 evpipe [0] = -1; 1828 evpipe [0] = -1;
1011 fd_intern (evfd); 1829 fd_intern (evfd); /* doing it twice doesn't hurt */
1012 ev_io_set (&pipeev, evfd, EV_READ); 1830 ev_io_set (&pipe_w, evfd, EV_READ);
1013 } 1831 }
1014 else 1832 else
1015#endif 1833# endif
1016 { 1834 {
1017 while (pipe (evpipe)) 1835 while (pipe (evpipe))
1018 syserr ("(libev) error creating signal/async pipe"); 1836 ev_syserr ("(libev) error creating signal/async pipe");
1019 1837
1020 fd_intern (evpipe [0]); 1838 fd_intern (evpipe [0]);
1021 fd_intern (evpipe [1]); 1839 fd_intern (evpipe [1]);
1022 ev_io_set (&pipeev, evpipe [0], EV_READ); 1840 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1023 } 1841 }
1024 1842
1025 ev_io_start (EV_A_ &pipeev); 1843 ev_io_start (EV_A_ &pipe_w);
1026 ev_unref (EV_A); /* watcher should not keep loop alive */ 1844 ev_unref (EV_A); /* watcher should not keep loop alive */
1027 } 1845 }
1028} 1846}
1029 1847
1030void inline_size 1848inline_speed void
1031evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1849evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1032{ 1850{
1033 if (!*flag) 1851 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1852
1853 if (expect_true (*flag))
1854 return;
1855
1856 *flag = 1;
1857
1858 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1859
1860 pipe_write_skipped = 1;
1861
1862 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1863
1864 if (pipe_write_wanted)
1034 { 1865 {
1866 int old_errno;
1867
1868 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1869
1035 int old_errno = errno; /* save errno because write might clobber it */ 1870 old_errno = errno; /* save errno because write will clobber it */
1036
1037 *flag = 1;
1038 1871
1039#if EV_USE_EVENTFD 1872#if EV_USE_EVENTFD
1040 if (evfd >= 0) 1873 if (evfd >= 0)
1041 { 1874 {
1042 uint64_t counter = 1; 1875 uint64_t counter = 1;
1043 write (evfd, &counter, sizeof (uint64_t)); 1876 write (evfd, &counter, sizeof (uint64_t));
1044 } 1877 }
1045 else 1878 else
1046#endif 1879#endif
1880 {
1881 /* win32 people keep sending patches that change this write() to send() */
1882 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1883 /* so when you think this write should be a send instead, please find out */
1884 /* where your send() is from - it's definitely not the microsoft send, and */
1885 /* tell me. thank you. */
1886 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1887 /* check the ev documentation on how to use this flag */
1047 write (evpipe [1], &old_errno, 1); 1888 write (evpipe [1], &(evpipe [1]), 1);
1889 }
1048 1890
1049 errno = old_errno; 1891 errno = old_errno;
1050 } 1892 }
1051} 1893}
1052 1894
1895/* called whenever the libev signal pipe */
1896/* got some events (signal, async) */
1053static void 1897static void
1054pipecb (EV_P_ ev_io *iow, int revents) 1898pipecb (EV_P_ ev_io *iow, int revents)
1055{ 1899{
1900 int i;
1901
1902 if (revents & EV_READ)
1903 {
1056#if EV_USE_EVENTFD 1904#if EV_USE_EVENTFD
1057 if (evfd >= 0) 1905 if (evfd >= 0)
1058 { 1906 {
1059 uint64_t counter; 1907 uint64_t counter;
1060 read (evfd, &counter, sizeof (uint64_t)); 1908 read (evfd, &counter, sizeof (uint64_t));
1061 } 1909 }
1062 else 1910 else
1063#endif 1911#endif
1064 { 1912 {
1065 char dummy; 1913 char dummy;
1914 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1066 read (evpipe [0], &dummy, 1); 1915 read (evpipe [0], &dummy, 1);
1916 }
1917 }
1918
1919 pipe_write_skipped = 0;
1920
1921 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1922
1923#if EV_SIGNAL_ENABLE
1924 if (sig_pending)
1067 } 1925 {
1926 sig_pending = 0;
1068 1927
1069 if (gotsig && ev_is_default_loop (EV_A)) 1928 ECB_MEMORY_FENCE_RELEASE;
1070 {
1071 int signum;
1072 gotsig = 0;
1073 1929
1074 for (signum = signalmax; signum--; ) 1930 for (i = EV_NSIG - 1; i--; )
1075 if (signals [signum].gotsig) 1931 if (expect_false (signals [i].pending))
1076 ev_feed_signal_event (EV_A_ signum + 1); 1932 ev_feed_signal_event (EV_A_ i + 1);
1077 } 1933 }
1934#endif
1078 1935
1079#if EV_ASYNC_ENABLE 1936#if EV_ASYNC_ENABLE
1080 if (gotasync) 1937 if (async_pending)
1081 { 1938 {
1082 int i; 1939 async_pending = 0;
1083 gotasync = 0; 1940
1941 ECB_MEMORY_FENCE_RELEASE;
1084 1942
1085 for (i = asynccnt; i--; ) 1943 for (i = asynccnt; i--; )
1086 if (asyncs [i]->sent) 1944 if (asyncs [i]->sent)
1087 { 1945 {
1088 asyncs [i]->sent = 0; 1946 asyncs [i]->sent = 0;
… …
1092#endif 1950#endif
1093} 1951}
1094 1952
1095/*****************************************************************************/ 1953/*****************************************************************************/
1096 1954
1955void
1956ev_feed_signal (int signum) EV_THROW
1957{
1958#if EV_MULTIPLICITY
1959 EV_P = signals [signum - 1].loop;
1960
1961 if (!EV_A)
1962 return;
1963#endif
1964
1965 if (!ev_active (&pipe_w))
1966 return;
1967
1968 signals [signum - 1].pending = 1;
1969 evpipe_write (EV_A_ &sig_pending);
1970}
1971
1097static void 1972static void
1098ev_sighandler (int signum) 1973ev_sighandler (int signum)
1099{ 1974{
1975#ifdef _WIN32
1976 signal (signum, ev_sighandler);
1977#endif
1978
1979 ev_feed_signal (signum);
1980}
1981
1982void noinline
1983ev_feed_signal_event (EV_P_ int signum) EV_THROW
1984{
1985 WL w;
1986
1987 if (expect_false (signum <= 0 || signum > EV_NSIG))
1988 return;
1989
1990 --signum;
1991
1100#if EV_MULTIPLICITY 1992#if EV_MULTIPLICITY
1101 struct ev_loop *loop = &default_loop_struct; 1993 /* it is permissible to try to feed a signal to the wrong loop */
1102#endif 1994 /* or, likely more useful, feeding a signal nobody is waiting for */
1103 1995
1104#if _WIN32 1996 if (expect_false (signals [signum].loop != EV_A))
1105 signal (signum, ev_sighandler);
1106#endif
1107
1108 signals [signum - 1].gotsig = 1;
1109 evpipe_write (EV_A_ &gotsig);
1110}
1111
1112void noinline
1113ev_feed_signal_event (EV_P_ int signum)
1114{
1115 WL w;
1116
1117#if EV_MULTIPLICITY
1118 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1119#endif
1120
1121 --signum;
1122
1123 if (signum < 0 || signum >= signalmax)
1124 return; 1997 return;
1998#endif
1125 1999
1126 signals [signum].gotsig = 0; 2000 signals [signum].pending = 0;
1127 2001
1128 for (w = signals [signum].head; w; w = w->next) 2002 for (w = signals [signum].head; w; w = w->next)
1129 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2003 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1130} 2004}
1131 2005
2006#if EV_USE_SIGNALFD
2007static void
2008sigfdcb (EV_P_ ev_io *iow, int revents)
2009{
2010 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2011
2012 for (;;)
2013 {
2014 ssize_t res = read (sigfd, si, sizeof (si));
2015
2016 /* not ISO-C, as res might be -1, but works with SuS */
2017 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2018 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2019
2020 if (res < (ssize_t)sizeof (si))
2021 break;
2022 }
2023}
2024#endif
2025
2026#endif
2027
1132/*****************************************************************************/ 2028/*****************************************************************************/
1133 2029
2030#if EV_CHILD_ENABLE
1134static WL childs [EV_PID_HASHSIZE]; 2031static WL childs [EV_PID_HASHSIZE];
1135
1136#ifndef _WIN32
1137 2032
1138static ev_signal childev; 2033static ev_signal childev;
1139 2034
1140#ifndef WIFCONTINUED 2035#ifndef WIFCONTINUED
1141# define WIFCONTINUED(status) 0 2036# define WIFCONTINUED(status) 0
1142#endif 2037#endif
1143 2038
1144void inline_speed 2039/* handle a single child status event */
2040inline_speed void
1145child_reap (EV_P_ int chain, int pid, int status) 2041child_reap (EV_P_ int chain, int pid, int status)
1146{ 2042{
1147 ev_child *w; 2043 ev_child *w;
1148 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2044 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1149 2045
1150 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2046 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1151 { 2047 {
1152 if ((w->pid == pid || !w->pid) 2048 if ((w->pid == pid || !w->pid)
1153 && (!traced || (w->flags & 1))) 2049 && (!traced || (w->flags & 1)))
1154 { 2050 {
1155 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2051 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1162 2058
1163#ifndef WCONTINUED 2059#ifndef WCONTINUED
1164# define WCONTINUED 0 2060# define WCONTINUED 0
1165#endif 2061#endif
1166 2062
2063/* called on sigchld etc., calls waitpid */
1167static void 2064static void
1168childcb (EV_P_ ev_signal *sw, int revents) 2065childcb (EV_P_ ev_signal *sw, int revents)
1169{ 2066{
1170 int pid, status; 2067 int pid, status;
1171 2068
… …
1179 /* make sure we are called again until all children have been reaped */ 2076 /* make sure we are called again until all children have been reaped */
1180 /* we need to do it this way so that the callback gets called before we continue */ 2077 /* we need to do it this way so that the callback gets called before we continue */
1181 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2078 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1182 2079
1183 child_reap (EV_A_ pid, pid, status); 2080 child_reap (EV_A_ pid, pid, status);
1184 if (EV_PID_HASHSIZE > 1) 2081 if ((EV_PID_HASHSIZE) > 1)
1185 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2082 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1186} 2083}
1187 2084
1188#endif 2085#endif
1189 2086
1190/*****************************************************************************/ 2087/*****************************************************************************/
1191 2088
2089#if EV_USE_IOCP
2090# include "ev_iocp.c"
2091#endif
1192#if EV_USE_PORT 2092#if EV_USE_PORT
1193# include "ev_port.c" 2093# include "ev_port.c"
1194#endif 2094#endif
1195#if EV_USE_KQUEUE 2095#if EV_USE_KQUEUE
1196# include "ev_kqueue.c" 2096# include "ev_kqueue.c"
… …
1203#endif 2103#endif
1204#if EV_USE_SELECT 2104#if EV_USE_SELECT
1205# include "ev_select.c" 2105# include "ev_select.c"
1206#endif 2106#endif
1207 2107
1208int 2108int ecb_cold
1209ev_version_major (void) 2109ev_version_major (void) EV_THROW
1210{ 2110{
1211 return EV_VERSION_MAJOR; 2111 return EV_VERSION_MAJOR;
1212} 2112}
1213 2113
1214int 2114int ecb_cold
1215ev_version_minor (void) 2115ev_version_minor (void) EV_THROW
1216{ 2116{
1217 return EV_VERSION_MINOR; 2117 return EV_VERSION_MINOR;
1218} 2118}
1219 2119
1220/* return true if we are running with elevated privileges and should ignore env variables */ 2120/* return true if we are running with elevated privileges and should ignore env variables */
1221int inline_size 2121int inline_size ecb_cold
1222enable_secure (void) 2122enable_secure (void)
1223{ 2123{
1224#ifdef _WIN32 2124#ifdef _WIN32
1225 return 0; 2125 return 0;
1226#else 2126#else
1227 return getuid () != geteuid () 2127 return getuid () != geteuid ()
1228 || getgid () != getegid (); 2128 || getgid () != getegid ();
1229#endif 2129#endif
1230} 2130}
1231 2131
1232unsigned int 2132unsigned int ecb_cold
1233ev_supported_backends (void) 2133ev_supported_backends (void) EV_THROW
1234{ 2134{
1235 unsigned int flags = 0; 2135 unsigned int flags = 0;
1236 2136
1237 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2137 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1238 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2138 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1241 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2141 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1242 2142
1243 return flags; 2143 return flags;
1244} 2144}
1245 2145
1246unsigned int 2146unsigned int ecb_cold
1247ev_recommended_backends (void) 2147ev_recommended_backends (void) EV_THROW
1248{ 2148{
1249 unsigned int flags = ev_supported_backends (); 2149 unsigned int flags = ev_supported_backends ();
1250 2150
1251#ifndef __NetBSD__ 2151#ifndef __NetBSD__
1252 /* kqueue is borked on everything but netbsd apparently */ 2152 /* kqueue is borked on everything but netbsd apparently */
1253 /* it usually doesn't work correctly on anything but sockets and pipes */ 2153 /* it usually doesn't work correctly on anything but sockets and pipes */
1254 flags &= ~EVBACKEND_KQUEUE; 2154 flags &= ~EVBACKEND_KQUEUE;
1255#endif 2155#endif
1256#ifdef __APPLE__ 2156#ifdef __APPLE__
1257 // flags &= ~EVBACKEND_KQUEUE; for documentation 2157 /* only select works correctly on that "unix-certified" platform */
1258 flags &= ~EVBACKEND_POLL; 2158 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2159 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2160#endif
2161#ifdef __FreeBSD__
2162 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1259#endif 2163#endif
1260 2164
1261 return flags; 2165 return flags;
1262} 2166}
1263 2167
2168unsigned int ecb_cold
2169ev_embeddable_backends (void) EV_THROW
2170{
2171 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2172
2173 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2174 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2175 flags &= ~EVBACKEND_EPOLL;
2176
2177 return flags;
2178}
2179
1264unsigned int 2180unsigned int
1265ev_embeddable_backends (void) 2181ev_backend (EV_P) EV_THROW
1266{ 2182{
1267 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2183 return backend;
1268
1269 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1270 /* please fix it and tell me how to detect the fix */
1271 flags &= ~EVBACKEND_EPOLL;
1272
1273 return flags;
1274} 2184}
1275 2185
2186#if EV_FEATURE_API
1276unsigned int 2187unsigned int
1277ev_backend (EV_P) 2188ev_iteration (EV_P) EV_THROW
1278{ 2189{
1279 return backend; 2190 return loop_count;
1280} 2191}
1281 2192
1282unsigned int 2193unsigned int
1283ev_loop_count (EV_P) 2194ev_depth (EV_P) EV_THROW
1284{ 2195{
1285 return loop_count; 2196 return loop_depth;
1286} 2197}
1287 2198
1288void 2199void
1289ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2200ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1290{ 2201{
1291 io_blocktime = interval; 2202 io_blocktime = interval;
1292} 2203}
1293 2204
1294void 2205void
1295ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2206ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1296{ 2207{
1297 timeout_blocktime = interval; 2208 timeout_blocktime = interval;
1298} 2209}
1299 2210
2211void
2212ev_set_userdata (EV_P_ void *data) EV_THROW
2213{
2214 userdata = data;
2215}
2216
2217void *
2218ev_userdata (EV_P) EV_THROW
2219{
2220 return userdata;
2221}
2222
2223void
2224ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2225{
2226 invoke_cb = invoke_pending_cb;
2227}
2228
2229void
2230ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2231{
2232 release_cb = release;
2233 acquire_cb = acquire;
2234}
2235#endif
2236
2237/* initialise a loop structure, must be zero-initialised */
1300static void noinline 2238static void noinline ecb_cold
1301loop_init (EV_P_ unsigned int flags) 2239loop_init (EV_P_ unsigned int flags) EV_THROW
1302{ 2240{
1303 if (!backend) 2241 if (!backend)
1304 { 2242 {
2243 origflags = flags;
2244
2245#if EV_USE_REALTIME
2246 if (!have_realtime)
2247 {
2248 struct timespec ts;
2249
2250 if (!clock_gettime (CLOCK_REALTIME, &ts))
2251 have_realtime = 1;
2252 }
2253#endif
2254
1305#if EV_USE_MONOTONIC 2255#if EV_USE_MONOTONIC
2256 if (!have_monotonic)
1306 { 2257 {
1307 struct timespec ts; 2258 struct timespec ts;
2259
1308 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2260 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1309 have_monotonic = 1; 2261 have_monotonic = 1;
1310 } 2262 }
1311#endif
1312
1313 ev_rt_now = ev_time ();
1314 mn_now = get_clock ();
1315 now_floor = mn_now;
1316 rtmn_diff = ev_rt_now - mn_now;
1317
1318 io_blocktime = 0.;
1319 timeout_blocktime = 0.;
1320 backend = 0;
1321 backend_fd = -1;
1322 gotasync = 0;
1323#if EV_USE_INOTIFY
1324 fs_fd = -2;
1325#endif 2263#endif
1326 2264
1327 /* pid check not overridable via env */ 2265 /* pid check not overridable via env */
1328#ifndef _WIN32 2266#ifndef _WIN32
1329 if (flags & EVFLAG_FORKCHECK) 2267 if (flags & EVFLAG_FORKCHECK)
… …
1333 if (!(flags & EVFLAG_NOENV) 2271 if (!(flags & EVFLAG_NOENV)
1334 && !enable_secure () 2272 && !enable_secure ()
1335 && getenv ("LIBEV_FLAGS")) 2273 && getenv ("LIBEV_FLAGS"))
1336 flags = atoi (getenv ("LIBEV_FLAGS")); 2274 flags = atoi (getenv ("LIBEV_FLAGS"));
1337 2275
1338 if (!(flags & 0x0000ffffU)) 2276 ev_rt_now = ev_time ();
2277 mn_now = get_clock ();
2278 now_floor = mn_now;
2279 rtmn_diff = ev_rt_now - mn_now;
2280#if EV_FEATURE_API
2281 invoke_cb = ev_invoke_pending;
2282#endif
2283
2284 io_blocktime = 0.;
2285 timeout_blocktime = 0.;
2286 backend = 0;
2287 backend_fd = -1;
2288 sig_pending = 0;
2289#if EV_ASYNC_ENABLE
2290 async_pending = 0;
2291#endif
2292 pipe_write_skipped = 0;
2293 pipe_write_wanted = 0;
2294#if EV_USE_INOTIFY
2295 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2296#endif
2297#if EV_USE_SIGNALFD
2298 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2299#endif
2300
2301 if (!(flags & EVBACKEND_MASK))
1339 flags |= ev_recommended_backends (); 2302 flags |= ev_recommended_backends ();
1340 2303
2304#if EV_USE_IOCP
2305 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2306#endif
1341#if EV_USE_PORT 2307#if EV_USE_PORT
1342 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2308 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1343#endif 2309#endif
1344#if EV_USE_KQUEUE 2310#if EV_USE_KQUEUE
1345 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2311 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1352#endif 2318#endif
1353#if EV_USE_SELECT 2319#if EV_USE_SELECT
1354 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2320 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1355#endif 2321#endif
1356 2322
2323 ev_prepare_init (&pending_w, pendingcb);
2324
2325#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1357 ev_init (&pipeev, pipecb); 2326 ev_init (&pipe_w, pipecb);
1358 ev_set_priority (&pipeev, EV_MAXPRI); 2327 ev_set_priority (&pipe_w, EV_MAXPRI);
2328#endif
1359 } 2329 }
1360} 2330}
1361 2331
1362static void noinline 2332/* free up a loop structure */
2333void ecb_cold
1363loop_destroy (EV_P) 2334ev_loop_destroy (EV_P)
1364{ 2335{
1365 int i; 2336 int i;
1366 2337
2338#if EV_MULTIPLICITY
2339 /* mimic free (0) */
2340 if (!EV_A)
2341 return;
2342#endif
2343
2344#if EV_CLEANUP_ENABLE
2345 /* queue cleanup watchers (and execute them) */
2346 if (expect_false (cleanupcnt))
2347 {
2348 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2349 EV_INVOKE_PENDING;
2350 }
2351#endif
2352
2353#if EV_CHILD_ENABLE
2354 if (ev_is_active (&childev))
2355 {
2356 ev_ref (EV_A); /* child watcher */
2357 ev_signal_stop (EV_A_ &childev);
2358 }
2359#endif
2360
1367 if (ev_is_active (&pipeev)) 2361 if (ev_is_active (&pipe_w))
1368 { 2362 {
1369 ev_ref (EV_A); /* signal watcher */ 2363 /*ev_ref (EV_A);*/
1370 ev_io_stop (EV_A_ &pipeev); 2364 /*ev_io_stop (EV_A_ &pipe_w);*/
1371 2365
1372#if EV_USE_EVENTFD 2366#if EV_USE_EVENTFD
1373 if (evfd >= 0) 2367 if (evfd >= 0)
1374 close (evfd); 2368 close (evfd);
1375#endif 2369#endif
1376 2370
1377 if (evpipe [0] >= 0) 2371 if (evpipe [0] >= 0)
1378 { 2372 {
1379 close (evpipe [0]); 2373 EV_WIN32_CLOSE_FD (evpipe [0]);
1380 close (evpipe [1]); 2374 EV_WIN32_CLOSE_FD (evpipe [1]);
1381 } 2375 }
1382 } 2376 }
2377
2378#if EV_USE_SIGNALFD
2379 if (ev_is_active (&sigfd_w))
2380 close (sigfd);
2381#endif
1383 2382
1384#if EV_USE_INOTIFY 2383#if EV_USE_INOTIFY
1385 if (fs_fd >= 0) 2384 if (fs_fd >= 0)
1386 close (fs_fd); 2385 close (fs_fd);
1387#endif 2386#endif
1388 2387
1389 if (backend_fd >= 0) 2388 if (backend_fd >= 0)
1390 close (backend_fd); 2389 close (backend_fd);
1391 2390
2391#if EV_USE_IOCP
2392 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2393#endif
1392#if EV_USE_PORT 2394#if EV_USE_PORT
1393 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2395 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1394#endif 2396#endif
1395#if EV_USE_KQUEUE 2397#if EV_USE_KQUEUE
1396 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2398 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1411#if EV_IDLE_ENABLE 2413#if EV_IDLE_ENABLE
1412 array_free (idle, [i]); 2414 array_free (idle, [i]);
1413#endif 2415#endif
1414 } 2416 }
1415 2417
1416 ev_free (anfds); anfdmax = 0; 2418 ev_free (anfds); anfds = 0; anfdmax = 0;
1417 2419
1418 /* have to use the microsoft-never-gets-it-right macro */ 2420 /* have to use the microsoft-never-gets-it-right macro */
2421 array_free (rfeed, EMPTY);
1419 array_free (fdchange, EMPTY); 2422 array_free (fdchange, EMPTY);
1420 array_free (timer, EMPTY); 2423 array_free (timer, EMPTY);
1421#if EV_PERIODIC_ENABLE 2424#if EV_PERIODIC_ENABLE
1422 array_free (periodic, EMPTY); 2425 array_free (periodic, EMPTY);
1423#endif 2426#endif
1424#if EV_FORK_ENABLE 2427#if EV_FORK_ENABLE
1425 array_free (fork, EMPTY); 2428 array_free (fork, EMPTY);
1426#endif 2429#endif
2430#if EV_CLEANUP_ENABLE
2431 array_free (cleanup, EMPTY);
2432#endif
1427 array_free (prepare, EMPTY); 2433 array_free (prepare, EMPTY);
1428 array_free (check, EMPTY); 2434 array_free (check, EMPTY);
1429#if EV_ASYNC_ENABLE 2435#if EV_ASYNC_ENABLE
1430 array_free (async, EMPTY); 2436 array_free (async, EMPTY);
1431#endif 2437#endif
1432 2438
1433 backend = 0; 2439 backend = 0;
2440
2441#if EV_MULTIPLICITY
2442 if (ev_is_default_loop (EV_A))
2443#endif
2444 ev_default_loop_ptr = 0;
2445#if EV_MULTIPLICITY
2446 else
2447 ev_free (EV_A);
2448#endif
1434} 2449}
1435 2450
1436#if EV_USE_INOTIFY 2451#if EV_USE_INOTIFY
1437void inline_size infy_fork (EV_P); 2452inline_size void infy_fork (EV_P);
1438#endif 2453#endif
1439 2454
1440void inline_size 2455inline_size void
1441loop_fork (EV_P) 2456loop_fork (EV_P)
1442{ 2457{
1443#if EV_USE_PORT 2458#if EV_USE_PORT
1444 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2459 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1445#endif 2460#endif
… …
1451#endif 2466#endif
1452#if EV_USE_INOTIFY 2467#if EV_USE_INOTIFY
1453 infy_fork (EV_A); 2468 infy_fork (EV_A);
1454#endif 2469#endif
1455 2470
1456 if (ev_is_active (&pipeev)) 2471 if (ev_is_active (&pipe_w))
1457 { 2472 {
1458 /* this "locks" the handlers against writing to the pipe */ 2473 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1459 /* while we modify the fd vars */
1460 gotsig = 1;
1461#if EV_ASYNC_ENABLE
1462 gotasync = 1;
1463#endif
1464 2474
1465 ev_ref (EV_A); 2475 ev_ref (EV_A);
1466 ev_io_stop (EV_A_ &pipeev); 2476 ev_io_stop (EV_A_ &pipe_w);
1467 2477
1468#if EV_USE_EVENTFD 2478#if EV_USE_EVENTFD
1469 if (evfd >= 0) 2479 if (evfd >= 0)
1470 close (evfd); 2480 close (evfd);
1471#endif 2481#endif
1472 2482
1473 if (evpipe [0] >= 0) 2483 if (evpipe [0] >= 0)
1474 { 2484 {
1475 close (evpipe [0]); 2485 EV_WIN32_CLOSE_FD (evpipe [0]);
1476 close (evpipe [1]); 2486 EV_WIN32_CLOSE_FD (evpipe [1]);
1477 } 2487 }
1478 2488
2489#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1479 evpipe_init (EV_A); 2490 evpipe_init (EV_A);
1480 /* now iterate over everything, in case we missed something */ 2491 /* now iterate over everything, in case we missed something */
1481 pipecb (EV_A_ &pipeev, EV_READ); 2492 pipecb (EV_A_ &pipe_w, EV_READ);
2493#endif
1482 } 2494 }
1483 2495
1484 postfork = 0; 2496 postfork = 0;
1485} 2497}
1486 2498
1487#if EV_MULTIPLICITY 2499#if EV_MULTIPLICITY
1488 2500
1489struct ev_loop * 2501struct ev_loop * ecb_cold
1490ev_loop_new (unsigned int flags) 2502ev_loop_new (unsigned int flags) EV_THROW
1491{ 2503{
1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2504 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493 2505
1494 memset (loop, 0, sizeof (struct ev_loop)); 2506 memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags); 2507 loop_init (EV_A_ flags);
1497 2508
1498 if (ev_backend (EV_A)) 2509 if (ev_backend (EV_A))
1499 return loop; 2510 return EV_A;
1500 2511
2512 ev_free (EV_A);
1501 return 0; 2513 return 0;
1502} 2514}
1503 2515
1504void 2516#endif /* multiplicity */
1505ev_loop_destroy (EV_P)
1506{
1507 loop_destroy (EV_A);
1508 ev_free (loop);
1509}
1510
1511void
1512ev_loop_fork (EV_P)
1513{
1514 postfork = 1; /* must be in line with ev_default_fork */
1515}
1516 2517
1517#if EV_VERIFY 2518#if EV_VERIFY
1518static void 2519static void noinline ecb_cold
2520verify_watcher (EV_P_ W w)
2521{
2522 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2523
2524 if (w->pending)
2525 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2526}
2527
2528static void noinline ecb_cold
2529verify_heap (EV_P_ ANHE *heap, int N)
2530{
2531 int i;
2532
2533 for (i = HEAP0; i < N + HEAP0; ++i)
2534 {
2535 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2536 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2537 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2538
2539 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2540 }
2541}
2542
2543static void noinline ecb_cold
1519array_check (W **ws, int cnt) 2544array_verify (EV_P_ W *ws, int cnt)
1520{ 2545{
1521 while (cnt--) 2546 while (cnt--)
2547 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2548 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2549 verify_watcher (EV_A_ ws [cnt]);
2550 }
1523} 2551}
1524#endif 2552#endif
1525 2553
1526void 2554#if EV_FEATURE_API
1527ev_loop_verify (EV_P) 2555void ecb_cold
2556ev_verify (EV_P) EV_THROW
1528{ 2557{
1529#if EV_VERIFY 2558#if EV_VERIFY
1530 int i; 2559 int i;
2560 WL w;
1531 2561
2562 assert (activecnt >= -1);
2563
2564 assert (fdchangemax >= fdchangecnt);
2565 for (i = 0; i < fdchangecnt; ++i)
2566 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2567
2568 assert (anfdmax >= 0);
2569 for (i = 0; i < anfdmax; ++i)
2570 for (w = anfds [i].head; w; w = w->next)
2571 {
2572 verify_watcher (EV_A_ (W)w);
2573 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2574 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2575 }
2576
2577 assert (timermax >= timercnt);
1532 checkheap (timers, timercnt); 2578 verify_heap (EV_A_ timers, timercnt);
2579
1533#if EV_PERIODIC_ENABLE 2580#if EV_PERIODIC_ENABLE
2581 assert (periodicmax >= periodiccnt);
1534 checkheap (periodics, periodiccnt); 2582 verify_heap (EV_A_ periodics, periodiccnt);
1535#endif 2583#endif
1536 2584
2585 for (i = NUMPRI; i--; )
2586 {
2587 assert (pendingmax [i] >= pendingcnt [i]);
1537#if EV_IDLE_ENABLE 2588#if EV_IDLE_ENABLE
1538 for (i = NUMPRI; i--; ) 2589 assert (idleall >= 0);
2590 assert (idlemax [i] >= idlecnt [i]);
1539 array_check ((W **)idles [i], idlecnt [i]); 2591 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1540#endif 2592#endif
2593 }
2594
1541#if EV_FORK_ENABLE 2595#if EV_FORK_ENABLE
2596 assert (forkmax >= forkcnt);
1542 array_check ((W **)forks, forkcnt); 2597 array_verify (EV_A_ (W *)forks, forkcnt);
1543#endif 2598#endif
2599
2600#if EV_CLEANUP_ENABLE
2601 assert (cleanupmax >= cleanupcnt);
2602 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2603#endif
2604
1544#if EV_ASYNC_ENABLE 2605#if EV_ASYNC_ENABLE
2606 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 2607 array_verify (EV_A_ (W *)asyncs, asynccnt);
2608#endif
2609
2610#if EV_PREPARE_ENABLE
2611 assert (preparemax >= preparecnt);
2612 array_verify (EV_A_ (W *)prepares, preparecnt);
2613#endif
2614
2615#if EV_CHECK_ENABLE
2616 assert (checkmax >= checkcnt);
2617 array_verify (EV_A_ (W *)checks, checkcnt);
2618#endif
2619
2620# if 0
2621#if EV_CHILD_ENABLE
2622 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2623 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2624#endif
1546#endif 2625# endif
1547 array_check ((W **)prepares, preparecnt);
1548 array_check ((W **)checks, checkcnt);
1549#endif 2626#endif
1550} 2627}
1551 2628#endif
1552#endif /* multiplicity */
1553 2629
1554#if EV_MULTIPLICITY 2630#if EV_MULTIPLICITY
1555struct ev_loop * 2631struct ev_loop * ecb_cold
1556ev_default_loop_init (unsigned int flags)
1557#else 2632#else
1558int 2633int
2634#endif
1559ev_default_loop (unsigned int flags) 2635ev_default_loop (unsigned int flags) EV_THROW
1560#endif
1561{ 2636{
1562 if (!ev_default_loop_ptr) 2637 if (!ev_default_loop_ptr)
1563 { 2638 {
1564#if EV_MULTIPLICITY 2639#if EV_MULTIPLICITY
1565 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2640 EV_P = ev_default_loop_ptr = &default_loop_struct;
1566#else 2641#else
1567 ev_default_loop_ptr = 1; 2642 ev_default_loop_ptr = 1;
1568#endif 2643#endif
1569 2644
1570 loop_init (EV_A_ flags); 2645 loop_init (EV_A_ flags);
1571 2646
1572 if (ev_backend (EV_A)) 2647 if (ev_backend (EV_A))
1573 { 2648 {
1574#ifndef _WIN32 2649#if EV_CHILD_ENABLE
1575 ev_signal_init (&childev, childcb, SIGCHLD); 2650 ev_signal_init (&childev, childcb, SIGCHLD);
1576 ev_set_priority (&childev, EV_MAXPRI); 2651 ev_set_priority (&childev, EV_MAXPRI);
1577 ev_signal_start (EV_A_ &childev); 2652 ev_signal_start (EV_A_ &childev);
1578 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2653 ev_unref (EV_A); /* child watcher should not keep loop alive */
1579#endif 2654#endif
… …
1584 2659
1585 return ev_default_loop_ptr; 2660 return ev_default_loop_ptr;
1586} 2661}
1587 2662
1588void 2663void
1589ev_default_destroy (void) 2664ev_loop_fork (EV_P) EV_THROW
1590{ 2665{
1591#if EV_MULTIPLICITY
1592 struct ev_loop *loop = ev_default_loop_ptr;
1593#endif
1594
1595#ifndef _WIN32
1596 ev_ref (EV_A); /* child watcher */
1597 ev_signal_stop (EV_A_ &childev);
1598#endif
1599
1600 loop_destroy (EV_A);
1601}
1602
1603void
1604ev_default_fork (void)
1605{
1606#if EV_MULTIPLICITY
1607 struct ev_loop *loop = ev_default_loop_ptr;
1608#endif
1609
1610 if (backend)
1611 postfork = 1; /* must be in line with ev_loop_fork */ 2666 postfork = 1; /* must be in line with ev_default_fork */
1612} 2667}
1613 2668
1614/*****************************************************************************/ 2669/*****************************************************************************/
1615 2670
1616void 2671void
1617ev_invoke (EV_P_ void *w, int revents) 2672ev_invoke (EV_P_ void *w, int revents)
1618{ 2673{
1619 EV_CB_INVOKE ((W)w, revents); 2674 EV_CB_INVOKE ((W)w, revents);
1620} 2675}
1621 2676
1622void inline_speed 2677unsigned int
1623call_pending (EV_P) 2678ev_pending_count (EV_P) EV_THROW
1624{ 2679{
1625 int pri; 2680 int pri;
2681 unsigned int count = 0;
1626 2682
1627 for (pri = NUMPRI; pri--; ) 2683 for (pri = NUMPRI; pri--; )
2684 count += pendingcnt [pri];
2685
2686 return count;
2687}
2688
2689void noinline
2690ev_invoke_pending (EV_P)
2691{
2692 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1628 while (pendingcnt [pri]) 2693 while (pendingcnt [pendingpri])
1629 { 2694 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2695 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1631 2696
1632 if (expect_true (p->w))
1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1635
1636 p->w->pending = 0; 2697 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 2698 EV_CB_INVOKE (p->w, p->events);
1638 EV_FREQUENT_CHECK; 2699 EV_FREQUENT_CHECK;
1639 }
1640 } 2700 }
1641} 2701}
1642 2702
1643#if EV_IDLE_ENABLE 2703#if EV_IDLE_ENABLE
1644void inline_size 2704/* make idle watchers pending. this handles the "call-idle */
2705/* only when higher priorities are idle" logic */
2706inline_size void
1645idle_reify (EV_P) 2707idle_reify (EV_P)
1646{ 2708{
1647 if (expect_false (idleall)) 2709 if (expect_false (idleall))
1648 { 2710 {
1649 int pri; 2711 int pri;
… …
1661 } 2723 }
1662 } 2724 }
1663} 2725}
1664#endif 2726#endif
1665 2727
1666void inline_size 2728/* make timers pending */
2729inline_size void
1667timers_reify (EV_P) 2730timers_reify (EV_P)
1668{ 2731{
1669 EV_FREQUENT_CHECK; 2732 EV_FREQUENT_CHECK;
1670 2733
1671 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2734 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1672 { 2735 {
1673 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2736 do
1674
1675 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1676
1677 /* first reschedule or stop timer */
1678 if (w->repeat)
1679 { 2737 {
2738 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2739
2740 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2741
2742 /* first reschedule or stop timer */
2743 if (w->repeat)
2744 {
1680 ev_at (w) += w->repeat; 2745 ev_at (w) += w->repeat;
1681 if (ev_at (w) < mn_now) 2746 if (ev_at (w) < mn_now)
1682 ev_at (w) = mn_now; 2747 ev_at (w) = mn_now;
1683 2748
1684 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2749 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1685 2750
1686 ANHE_at_cache (timers [HEAP0]); 2751 ANHE_at_cache (timers [HEAP0]);
1687 downheap (timers, timercnt, HEAP0); 2752 downheap (timers, timercnt, HEAP0);
2753 }
2754 else
2755 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2756
2757 EV_FREQUENT_CHECK;
2758 feed_reverse (EV_A_ (W)w);
1688 } 2759 }
1689 else 2760 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1690 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1691 2761
1692 EV_FREQUENT_CHECK; 2762 feed_reverse_done (EV_A_ EV_TIMER);
1693 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1694 } 2763 }
1695} 2764}
1696 2765
1697#if EV_PERIODIC_ENABLE 2766#if EV_PERIODIC_ENABLE
1698void inline_size 2767
2768static void noinline
2769periodic_recalc (EV_P_ ev_periodic *w)
2770{
2771 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2772 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2773
2774 /* the above almost always errs on the low side */
2775 while (at <= ev_rt_now)
2776 {
2777 ev_tstamp nat = at + w->interval;
2778
2779 /* when resolution fails us, we use ev_rt_now */
2780 if (expect_false (nat == at))
2781 {
2782 at = ev_rt_now;
2783 break;
2784 }
2785
2786 at = nat;
2787 }
2788
2789 ev_at (w) = at;
2790}
2791
2792/* make periodics pending */
2793inline_size void
1699periodics_reify (EV_P) 2794periodics_reify (EV_P)
1700{ 2795{
1701 EV_FREQUENT_CHECK; 2796 EV_FREQUENT_CHECK;
1702 2797
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2798 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 2799 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2800 int feed_count = 0;
1706 2801
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2802 do
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 2803 {
2804 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2805
2806 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2807
2808 /* first reschedule or stop timer */
2809 if (w->reschedule_cb)
2810 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2811 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 2812
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2813 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715 2814
1716 ANHE_at_cache (periodics [HEAP0]); 2815 ANHE_at_cache (periodics [HEAP0]);
1717 downheap (periodics, periodiccnt, HEAP0); 2816 downheap (periodics, periodiccnt, HEAP0);
2817 }
2818 else if (w->interval)
2819 {
2820 periodic_recalc (EV_A_ w);
2821 ANHE_at_cache (periodics [HEAP0]);
2822 downheap (periodics, periodiccnt, HEAP0);
2823 }
2824 else
2825 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2826
2827 EV_FREQUENT_CHECK;
2828 feed_reverse (EV_A_ (W)w);
1718 } 2829 }
1719 else if (w->interval) 2830 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1720 {
1721 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1722 /* if next trigger time is not sufficiently in the future, put it there */
1723 /* this might happen because of floating point inexactness */
1724 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1725 {
1726 ev_at (w) += w->interval;
1727 2831
1728 /* if interval is unreasonably low we might still have a time in the past */
1729 /* so correct this. this will make the periodic very inexact, but the user */
1730 /* has effectively asked to get triggered more often than possible */
1731 if (ev_at (w) < ev_rt_now)
1732 ev_at (w) = ev_rt_now;
1733 }
1734
1735 ANHE_at_cache (periodics [HEAP0]);
1736 downheap (periodics, periodiccnt, HEAP0);
1737 }
1738 else
1739 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1740
1741 EV_FREQUENT_CHECK;
1742 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2832 feed_reverse_done (EV_A_ EV_PERIODIC);
1743 } 2833 }
1744} 2834}
1745 2835
2836/* simply recalculate all periodics */
2837/* TODO: maybe ensure that at least one event happens when jumping forward? */
1746static void noinline 2838static void noinline ecb_cold
1747periodics_reschedule (EV_P) 2839periodics_reschedule (EV_P)
1748{ 2840{
1749 int i; 2841 int i;
1750 2842
1751 /* adjust periodics after time jump */ 2843 /* adjust periodics after time jump */
… …
1754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2846 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1755 2847
1756 if (w->reschedule_cb) 2848 if (w->reschedule_cb)
1757 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2849 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1758 else if (w->interval) 2850 else if (w->interval)
1759 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2851 periodic_recalc (EV_A_ w);
1760 2852
1761 ANHE_at_cache (periodics [i]); 2853 ANHE_at_cache (periodics [i]);
1762 } 2854 }
1763 2855
1764 reheap (periodics, periodiccnt); 2856 reheap (periodics, periodiccnt);
1765} 2857}
1766#endif 2858#endif
1767 2859
1768void inline_speed 2860/* adjust all timers by a given offset */
2861static void noinline ecb_cold
2862timers_reschedule (EV_P_ ev_tstamp adjust)
2863{
2864 int i;
2865
2866 for (i = 0; i < timercnt; ++i)
2867 {
2868 ANHE *he = timers + i + HEAP0;
2869 ANHE_w (*he)->at += adjust;
2870 ANHE_at_cache (*he);
2871 }
2872}
2873
2874/* fetch new monotonic and realtime times from the kernel */
2875/* also detect if there was a timejump, and act accordingly */
2876inline_speed void
1769time_update (EV_P_ ev_tstamp max_block) 2877time_update (EV_P_ ev_tstamp max_block)
1770{ 2878{
1771 int i;
1772
1773#if EV_USE_MONOTONIC 2879#if EV_USE_MONOTONIC
1774 if (expect_true (have_monotonic)) 2880 if (expect_true (have_monotonic))
1775 { 2881 {
2882 int i;
1776 ev_tstamp odiff = rtmn_diff; 2883 ev_tstamp odiff = rtmn_diff;
1777 2884
1778 mn_now = get_clock (); 2885 mn_now = get_clock ();
1779 2886
1780 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2887 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1796 * doesn't hurt either as we only do this on time-jumps or 2903 * doesn't hurt either as we only do this on time-jumps or
1797 * in the unlikely event of having been preempted here. 2904 * in the unlikely event of having been preempted here.
1798 */ 2905 */
1799 for (i = 4; --i; ) 2906 for (i = 4; --i; )
1800 { 2907 {
2908 ev_tstamp diff;
1801 rtmn_diff = ev_rt_now - mn_now; 2909 rtmn_diff = ev_rt_now - mn_now;
1802 2910
2911 diff = odiff - rtmn_diff;
2912
1803 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2913 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1804 return; /* all is well */ 2914 return; /* all is well */
1805 2915
1806 ev_rt_now = ev_time (); 2916 ev_rt_now = ev_time ();
1807 mn_now = get_clock (); 2917 mn_now = get_clock ();
1808 now_floor = mn_now; 2918 now_floor = mn_now;
1809 } 2919 }
1810 2920
2921 /* no timer adjustment, as the monotonic clock doesn't jump */
2922 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811# if EV_PERIODIC_ENABLE 2923# if EV_PERIODIC_ENABLE
1812 periodics_reschedule (EV_A); 2924 periodics_reschedule (EV_A);
1813# endif 2925# endif
1814 /* no timer adjustment, as the monotonic clock doesn't jump */
1815 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1816 } 2926 }
1817 else 2927 else
1818#endif 2928#endif
1819 { 2929 {
1820 ev_rt_now = ev_time (); 2930 ev_rt_now = ev_time ();
1821 2931
1822 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2932 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1823 { 2933 {
2934 /* adjust timers. this is easy, as the offset is the same for all of them */
2935 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1824#if EV_PERIODIC_ENABLE 2936#if EV_PERIODIC_ENABLE
1825 periodics_reschedule (EV_A); 2937 periodics_reschedule (EV_A);
1826#endif 2938#endif
1827 /* adjust timers. this is easy, as the offset is the same for all of them */
1828 for (i = 0; i < timercnt; ++i)
1829 {
1830 ANHE *he = timers + i + HEAP0;
1831 ANHE_w (*he)->at += ev_rt_now - mn_now;
1832 ANHE_at_cache (*he);
1833 }
1834 } 2939 }
1835 2940
1836 mn_now = ev_rt_now; 2941 mn_now = ev_rt_now;
1837 } 2942 }
1838} 2943}
1839 2944
1840void 2945int
1841ev_ref (EV_P)
1842{
1843 ++activecnt;
1844}
1845
1846void
1847ev_unref (EV_P)
1848{
1849 --activecnt;
1850}
1851
1852static int loop_done;
1853
1854void
1855ev_loop (EV_P_ int flags) 2946ev_run (EV_P_ int flags)
1856{ 2947{
2948#if EV_FEATURE_API
2949 ++loop_depth;
2950#endif
2951
2952 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2953
1857 loop_done = EVUNLOOP_CANCEL; 2954 loop_done = EVBREAK_CANCEL;
1858 2955
1859 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2956 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1860 2957
1861 do 2958 do
1862 { 2959 {
1863#if EV_VERIFY >= 2 2960#if EV_VERIFY >= 2
1864 ev_loop_verify (EV_A); 2961 ev_verify (EV_A);
1865#endif 2962#endif
1866 2963
1867#ifndef _WIN32 2964#ifndef _WIN32
1868 if (expect_false (curpid)) /* penalise the forking check even more */ 2965 if (expect_false (curpid)) /* penalise the forking check even more */
1869 if (expect_false (getpid () != curpid)) 2966 if (expect_false (getpid () != curpid))
… …
1877 /* we might have forked, so queue fork handlers */ 2974 /* we might have forked, so queue fork handlers */
1878 if (expect_false (postfork)) 2975 if (expect_false (postfork))
1879 if (forkcnt) 2976 if (forkcnt)
1880 { 2977 {
1881 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2978 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1882 call_pending (EV_A); 2979 EV_INVOKE_PENDING;
1883 } 2980 }
1884#endif 2981#endif
1885 2982
2983#if EV_PREPARE_ENABLE
1886 /* queue prepare watchers (and execute them) */ 2984 /* queue prepare watchers (and execute them) */
1887 if (expect_false (preparecnt)) 2985 if (expect_false (preparecnt))
1888 { 2986 {
1889 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2987 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1890 call_pending (EV_A); 2988 EV_INVOKE_PENDING;
1891 } 2989 }
2990#endif
1892 2991
1893 if (expect_false (!activecnt)) 2992 if (expect_false (loop_done))
1894 break; 2993 break;
1895 2994
1896 /* we might have forked, so reify kernel state if necessary */ 2995 /* we might have forked, so reify kernel state if necessary */
1897 if (expect_false (postfork)) 2996 if (expect_false (postfork))
1898 loop_fork (EV_A); 2997 loop_fork (EV_A);
… …
1903 /* calculate blocking time */ 3002 /* calculate blocking time */
1904 { 3003 {
1905 ev_tstamp waittime = 0.; 3004 ev_tstamp waittime = 0.;
1906 ev_tstamp sleeptime = 0.; 3005 ev_tstamp sleeptime = 0.;
1907 3006
3007 /* remember old timestamp for io_blocktime calculation */
3008 ev_tstamp prev_mn_now = mn_now;
3009
3010 /* update time to cancel out callback processing overhead */
3011 time_update (EV_A_ 1e100);
3012
3013 /* from now on, we want a pipe-wake-up */
3014 pipe_write_wanted = 1;
3015
3016 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3017
1908 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3018 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1909 { 3019 {
1910 /* update time to cancel out callback processing overhead */
1911 time_update (EV_A_ 1e100);
1912
1913 waittime = MAX_BLOCKTIME; 3020 waittime = MAX_BLOCKTIME;
1914 3021
1915 if (timercnt) 3022 if (timercnt)
1916 { 3023 {
1917 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3024 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1918 if (waittime > to) waittime = to; 3025 if (waittime > to) waittime = to;
1919 } 3026 }
1920 3027
1921#if EV_PERIODIC_ENABLE 3028#if EV_PERIODIC_ENABLE
1922 if (periodiccnt) 3029 if (periodiccnt)
1923 { 3030 {
1924 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3031 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1925 if (waittime > to) waittime = to; 3032 if (waittime > to) waittime = to;
1926 } 3033 }
1927#endif 3034#endif
1928 3035
3036 /* don't let timeouts decrease the waittime below timeout_blocktime */
1929 if (expect_false (waittime < timeout_blocktime)) 3037 if (expect_false (waittime < timeout_blocktime))
1930 waittime = timeout_blocktime; 3038 waittime = timeout_blocktime;
1931 3039
1932 sleeptime = waittime - backend_fudge; 3040 /* at this point, we NEED to wait, so we have to ensure */
3041 /* to pass a minimum nonzero value to the backend */
3042 if (expect_false (waittime < backend_mintime))
3043 waittime = backend_mintime;
1933 3044
3045 /* extra check because io_blocktime is commonly 0 */
1934 if (expect_true (sleeptime > io_blocktime)) 3046 if (expect_false (io_blocktime))
1935 sleeptime = io_blocktime;
1936
1937 if (sleeptime)
1938 { 3047 {
3048 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3049
3050 if (sleeptime > waittime - backend_mintime)
3051 sleeptime = waittime - backend_mintime;
3052
3053 if (expect_true (sleeptime > 0.))
3054 {
1939 ev_sleep (sleeptime); 3055 ev_sleep (sleeptime);
1940 waittime -= sleeptime; 3056 waittime -= sleeptime;
3057 }
1941 } 3058 }
1942 } 3059 }
1943 3060
3061#if EV_FEATURE_API
1944 ++loop_count; 3062 ++loop_count;
3063#endif
3064 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1945 backend_poll (EV_A_ waittime); 3065 backend_poll (EV_A_ waittime);
3066 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3067
3068 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3069
3070 if (pipe_write_skipped)
3071 {
3072 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3073 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3074 }
3075
1946 3076
1947 /* update ev_rt_now, do magic */ 3077 /* update ev_rt_now, do magic */
1948 time_update (EV_A_ waittime + sleeptime); 3078 time_update (EV_A_ waittime + sleeptime);
1949 } 3079 }
1950 3080
… …
1957#if EV_IDLE_ENABLE 3087#if EV_IDLE_ENABLE
1958 /* queue idle watchers unless other events are pending */ 3088 /* queue idle watchers unless other events are pending */
1959 idle_reify (EV_A); 3089 idle_reify (EV_A);
1960#endif 3090#endif
1961 3091
3092#if EV_CHECK_ENABLE
1962 /* queue check watchers, to be executed first */ 3093 /* queue check watchers, to be executed first */
1963 if (expect_false (checkcnt)) 3094 if (expect_false (checkcnt))
1964 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3095 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3096#endif
1965 3097
1966 call_pending (EV_A); 3098 EV_INVOKE_PENDING;
1967 } 3099 }
1968 while (expect_true ( 3100 while (expect_true (
1969 activecnt 3101 activecnt
1970 && !loop_done 3102 && !loop_done
1971 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3103 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1972 )); 3104 ));
1973 3105
1974 if (loop_done == EVUNLOOP_ONE) 3106 if (loop_done == EVBREAK_ONE)
1975 loop_done = EVUNLOOP_CANCEL; 3107 loop_done = EVBREAK_CANCEL;
3108
3109#if EV_FEATURE_API
3110 --loop_depth;
3111#endif
3112
3113 return activecnt;
1976} 3114}
1977 3115
1978void 3116void
1979ev_unloop (EV_P_ int how) 3117ev_break (EV_P_ int how) EV_THROW
1980{ 3118{
1981 loop_done = how; 3119 loop_done = how;
1982} 3120}
1983 3121
3122void
3123ev_ref (EV_P) EV_THROW
3124{
3125 ++activecnt;
3126}
3127
3128void
3129ev_unref (EV_P) EV_THROW
3130{
3131 --activecnt;
3132}
3133
3134void
3135ev_now_update (EV_P) EV_THROW
3136{
3137 time_update (EV_A_ 1e100);
3138}
3139
3140void
3141ev_suspend (EV_P) EV_THROW
3142{
3143 ev_now_update (EV_A);
3144}
3145
3146void
3147ev_resume (EV_P) EV_THROW
3148{
3149 ev_tstamp mn_prev = mn_now;
3150
3151 ev_now_update (EV_A);
3152 timers_reschedule (EV_A_ mn_now - mn_prev);
3153#if EV_PERIODIC_ENABLE
3154 /* TODO: really do this? */
3155 periodics_reschedule (EV_A);
3156#endif
3157}
3158
1984/*****************************************************************************/ 3159/*****************************************************************************/
3160/* singly-linked list management, used when the expected list length is short */
1985 3161
1986void inline_size 3162inline_size void
1987wlist_add (WL *head, WL elem) 3163wlist_add (WL *head, WL elem)
1988{ 3164{
1989 elem->next = *head; 3165 elem->next = *head;
1990 *head = elem; 3166 *head = elem;
1991} 3167}
1992 3168
1993void inline_size 3169inline_size void
1994wlist_del (WL *head, WL elem) 3170wlist_del (WL *head, WL elem)
1995{ 3171{
1996 while (*head) 3172 while (*head)
1997 { 3173 {
1998 if (*head == elem) 3174 if (expect_true (*head == elem))
1999 { 3175 {
2000 *head = elem->next; 3176 *head = elem->next;
2001 return; 3177 break;
2002 } 3178 }
2003 3179
2004 head = &(*head)->next; 3180 head = &(*head)->next;
2005 } 3181 }
2006} 3182}
2007 3183
2008void inline_speed 3184/* internal, faster, version of ev_clear_pending */
3185inline_speed void
2009clear_pending (EV_P_ W w) 3186clear_pending (EV_P_ W w)
2010{ 3187{
2011 if (w->pending) 3188 if (w->pending)
2012 { 3189 {
2013 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3190 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2014 w->pending = 0; 3191 w->pending = 0;
2015 } 3192 }
2016} 3193}
2017 3194
2018int 3195int
2019ev_clear_pending (EV_P_ void *w) 3196ev_clear_pending (EV_P_ void *w) EV_THROW
2020{ 3197{
2021 W w_ = (W)w; 3198 W w_ = (W)w;
2022 int pending = w_->pending; 3199 int pending = w_->pending;
2023 3200
2024 if (expect_true (pending)) 3201 if (expect_true (pending))
2025 { 3202 {
2026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3203 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3204 p->w = (W)&pending_w;
2027 w_->pending = 0; 3205 w_->pending = 0;
2028 p->w = 0;
2029 return p->events; 3206 return p->events;
2030 } 3207 }
2031 else 3208 else
2032 return 0; 3209 return 0;
2033} 3210}
2034 3211
2035void inline_size 3212inline_size void
2036pri_adjust (EV_P_ W w) 3213pri_adjust (EV_P_ W w)
2037{ 3214{
2038 int pri = w->priority; 3215 int pri = ev_priority (w);
2039 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3216 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2040 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3217 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2041 w->priority = pri; 3218 ev_set_priority (w, pri);
2042} 3219}
2043 3220
2044void inline_speed 3221inline_speed void
2045ev_start (EV_P_ W w, int active) 3222ev_start (EV_P_ W w, int active)
2046{ 3223{
2047 pri_adjust (EV_A_ w); 3224 pri_adjust (EV_A_ w);
2048 w->active = active; 3225 w->active = active;
2049 ev_ref (EV_A); 3226 ev_ref (EV_A);
2050} 3227}
2051 3228
2052void inline_size 3229inline_size void
2053ev_stop (EV_P_ W w) 3230ev_stop (EV_P_ W w)
2054{ 3231{
2055 ev_unref (EV_A); 3232 ev_unref (EV_A);
2056 w->active = 0; 3233 w->active = 0;
2057} 3234}
2058 3235
2059/*****************************************************************************/ 3236/*****************************************************************************/
2060 3237
2061void noinline 3238void noinline
2062ev_io_start (EV_P_ ev_io *w) 3239ev_io_start (EV_P_ ev_io *w) EV_THROW
2063{ 3240{
2064 int fd = w->fd; 3241 int fd = w->fd;
2065 3242
2066 if (expect_false (ev_is_active (w))) 3243 if (expect_false (ev_is_active (w)))
2067 return; 3244 return;
2068 3245
2069 assert (("ev_io_start called with negative fd", fd >= 0)); 3246 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3247 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2070 3248
2071 EV_FREQUENT_CHECK; 3249 EV_FREQUENT_CHECK;
2072 3250
2073 ev_start (EV_A_ (W)w, 1); 3251 ev_start (EV_A_ (W)w, 1);
2074 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3252 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2075 wlist_add (&anfds[fd].head, (WL)w); 3253 wlist_add (&anfds[fd].head, (WL)w);
2076 3254
2077 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3255 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2078 w->events &= ~EV_IOFDSET; 3256 w->events &= ~EV__IOFDSET;
2079 3257
2080 EV_FREQUENT_CHECK; 3258 EV_FREQUENT_CHECK;
2081} 3259}
2082 3260
2083void noinline 3261void noinline
2084ev_io_stop (EV_P_ ev_io *w) 3262ev_io_stop (EV_P_ ev_io *w) EV_THROW
2085{ 3263{
2086 clear_pending (EV_A_ (W)w); 3264 clear_pending (EV_A_ (W)w);
2087 if (expect_false (!ev_is_active (w))) 3265 if (expect_false (!ev_is_active (w)))
2088 return; 3266 return;
2089 3267
2090 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3268 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2091 3269
2092 EV_FREQUENT_CHECK; 3270 EV_FREQUENT_CHECK;
2093 3271
2094 wlist_del (&anfds[w->fd].head, (WL)w); 3272 wlist_del (&anfds[w->fd].head, (WL)w);
2095 ev_stop (EV_A_ (W)w); 3273 ev_stop (EV_A_ (W)w);
2096 3274
2097 fd_change (EV_A_ w->fd, 1); 3275 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2098 3276
2099 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2100} 3278}
2101 3279
2102void noinline 3280void noinline
2103ev_timer_start (EV_P_ ev_timer *w) 3281ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2104{ 3282{
2105 if (expect_false (ev_is_active (w))) 3283 if (expect_false (ev_is_active (w)))
2106 return; 3284 return;
2107 3285
2108 ev_at (w) += mn_now; 3286 ev_at (w) += mn_now;
2109 3287
2110 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3288 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2111 3289
2112 EV_FREQUENT_CHECK; 3290 EV_FREQUENT_CHECK;
2113 3291
2114 ++timercnt; 3292 ++timercnt;
2115 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3293 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2118 ANHE_at_cache (timers [ev_active (w)]); 3296 ANHE_at_cache (timers [ev_active (w)]);
2119 upheap (timers, ev_active (w)); 3297 upheap (timers, ev_active (w));
2120 3298
2121 EV_FREQUENT_CHECK; 3299 EV_FREQUENT_CHECK;
2122 3300
2123 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3301 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2124} 3302}
2125 3303
2126void noinline 3304void noinline
2127ev_timer_stop (EV_P_ ev_timer *w) 3305ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2128{ 3306{
2129 clear_pending (EV_A_ (W)w); 3307 clear_pending (EV_A_ (W)w);
2130 if (expect_false (!ev_is_active (w))) 3308 if (expect_false (!ev_is_active (w)))
2131 return; 3309 return;
2132 3310
2133 EV_FREQUENT_CHECK; 3311 EV_FREQUENT_CHECK;
2134 3312
2135 { 3313 {
2136 int active = ev_active (w); 3314 int active = ev_active (w);
2137 3315
2138 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3316 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2139 3317
2140 --timercnt; 3318 --timercnt;
2141 3319
2142 if (expect_true (active < timercnt + HEAP0)) 3320 if (expect_true (active < timercnt + HEAP0))
2143 { 3321 {
2144 timers [active] = timers [timercnt + HEAP0]; 3322 timers [active] = timers [timercnt + HEAP0];
2145 adjustheap (timers, timercnt, active); 3323 adjustheap (timers, timercnt, active);
2146 } 3324 }
2147 } 3325 }
2148 3326
2149 EV_FREQUENT_CHECK;
2150
2151 ev_at (w) -= mn_now; 3327 ev_at (w) -= mn_now;
2152 3328
2153 ev_stop (EV_A_ (W)w); 3329 ev_stop (EV_A_ (W)w);
3330
3331 EV_FREQUENT_CHECK;
2154} 3332}
2155 3333
2156void noinline 3334void noinline
2157ev_timer_again (EV_P_ ev_timer *w) 3335ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2158{ 3336{
2159 EV_FREQUENT_CHECK; 3337 EV_FREQUENT_CHECK;
3338
3339 clear_pending (EV_A_ (W)w);
2160 3340
2161 if (ev_is_active (w)) 3341 if (ev_is_active (w))
2162 { 3342 {
2163 if (w->repeat) 3343 if (w->repeat)
2164 { 3344 {
… …
2176 } 3356 }
2177 3357
2178 EV_FREQUENT_CHECK; 3358 EV_FREQUENT_CHECK;
2179} 3359}
2180 3360
3361ev_tstamp
3362ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3363{
3364 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3365}
3366
2181#if EV_PERIODIC_ENABLE 3367#if EV_PERIODIC_ENABLE
2182void noinline 3368void noinline
2183ev_periodic_start (EV_P_ ev_periodic *w) 3369ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2184{ 3370{
2185 if (expect_false (ev_is_active (w))) 3371 if (expect_false (ev_is_active (w)))
2186 return; 3372 return;
2187 3373
2188 if (w->reschedule_cb) 3374 if (w->reschedule_cb)
2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3375 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190 else if (w->interval) 3376 else if (w->interval)
2191 { 3377 {
2192 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3378 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2193 /* this formula differs from the one in periodic_reify because we do not always round up */ 3379 periodic_recalc (EV_A_ w);
2194 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2195 } 3380 }
2196 else 3381 else
2197 ev_at (w) = w->offset; 3382 ev_at (w) = w->offset;
2198 3383
2199 EV_FREQUENT_CHECK; 3384 EV_FREQUENT_CHECK;
… …
2205 ANHE_at_cache (periodics [ev_active (w)]); 3390 ANHE_at_cache (periodics [ev_active (w)]);
2206 upheap (periodics, ev_active (w)); 3391 upheap (periodics, ev_active (w));
2207 3392
2208 EV_FREQUENT_CHECK; 3393 EV_FREQUENT_CHECK;
2209 3394
2210 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3395 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2211} 3396}
2212 3397
2213void noinline 3398void noinline
2214ev_periodic_stop (EV_P_ ev_periodic *w) 3399ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2215{ 3400{
2216 clear_pending (EV_A_ (W)w); 3401 clear_pending (EV_A_ (W)w);
2217 if (expect_false (!ev_is_active (w))) 3402 if (expect_false (!ev_is_active (w)))
2218 return; 3403 return;
2219 3404
2220 EV_FREQUENT_CHECK; 3405 EV_FREQUENT_CHECK;
2221 3406
2222 { 3407 {
2223 int active = ev_active (w); 3408 int active = ev_active (w);
2224 3409
2225 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3410 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2226 3411
2227 --periodiccnt; 3412 --periodiccnt;
2228 3413
2229 if (expect_true (active < periodiccnt + HEAP0)) 3414 if (expect_true (active < periodiccnt + HEAP0))
2230 { 3415 {
2231 periodics [active] = periodics [periodiccnt + HEAP0]; 3416 periodics [active] = periodics [periodiccnt + HEAP0];
2232 adjustheap (periodics, periodiccnt, active); 3417 adjustheap (periodics, periodiccnt, active);
2233 } 3418 }
2234 } 3419 }
2235 3420
2236 EV_FREQUENT_CHECK;
2237
2238 ev_stop (EV_A_ (W)w); 3421 ev_stop (EV_A_ (W)w);
3422
3423 EV_FREQUENT_CHECK;
2239} 3424}
2240 3425
2241void noinline 3426void noinline
2242ev_periodic_again (EV_P_ ev_periodic *w) 3427ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2243{ 3428{
2244 /* TODO: use adjustheap and recalculation */ 3429 /* TODO: use adjustheap and recalculation */
2245 ev_periodic_stop (EV_A_ w); 3430 ev_periodic_stop (EV_A_ w);
2246 ev_periodic_start (EV_A_ w); 3431 ev_periodic_start (EV_A_ w);
2247} 3432}
… …
2249 3434
2250#ifndef SA_RESTART 3435#ifndef SA_RESTART
2251# define SA_RESTART 0 3436# define SA_RESTART 0
2252#endif 3437#endif
2253 3438
3439#if EV_SIGNAL_ENABLE
3440
2254void noinline 3441void noinline
2255ev_signal_start (EV_P_ ev_signal *w) 3442ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2256{ 3443{
2257#if EV_MULTIPLICITY
2258 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2259#endif
2260 if (expect_false (ev_is_active (w))) 3444 if (expect_false (ev_is_active (w)))
2261 return; 3445 return;
2262 3446
2263 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3447 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2264 3448
2265 evpipe_init (EV_A); 3449#if EV_MULTIPLICITY
3450 assert (("libev: a signal must not be attached to two different loops",
3451 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2266 3452
2267 EV_FREQUENT_CHECK; 3453 signals [w->signum - 1].loop = EV_A;
3454#endif
2268 3455
3456 EV_FREQUENT_CHECK;
3457
3458#if EV_USE_SIGNALFD
3459 if (sigfd == -2)
2269 { 3460 {
2270#ifndef _WIN32 3461 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2271 sigset_t full, prev; 3462 if (sigfd < 0 && errno == EINVAL)
2272 sigfillset (&full); 3463 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2273 sigprocmask (SIG_SETMASK, &full, &prev);
2274#endif
2275 3464
2276 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3465 if (sigfd >= 0)
3466 {
3467 fd_intern (sigfd); /* doing it twice will not hurt */
2277 3468
2278#ifndef _WIN32 3469 sigemptyset (&sigfd_set);
2279 sigprocmask (SIG_SETMASK, &prev, 0); 3470
2280#endif 3471 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3472 ev_set_priority (&sigfd_w, EV_MAXPRI);
3473 ev_io_start (EV_A_ &sigfd_w);
3474 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3475 }
2281 } 3476 }
3477
3478 if (sigfd >= 0)
3479 {
3480 /* TODO: check .head */
3481 sigaddset (&sigfd_set, w->signum);
3482 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3483
3484 signalfd (sigfd, &sigfd_set, 0);
3485 }
3486#endif
2282 3487
2283 ev_start (EV_A_ (W)w, 1); 3488 ev_start (EV_A_ (W)w, 1);
2284 wlist_add (&signals [w->signum - 1].head, (WL)w); 3489 wlist_add (&signals [w->signum - 1].head, (WL)w);
2285 3490
2286 if (!((WL)w)->next) 3491 if (!((WL)w)->next)
3492# if EV_USE_SIGNALFD
3493 if (sigfd < 0) /*TODO*/
3494# endif
2287 { 3495 {
2288#if _WIN32 3496# ifdef _WIN32
3497 evpipe_init (EV_A);
3498
2289 signal (w->signum, ev_sighandler); 3499 signal (w->signum, ev_sighandler);
2290#else 3500# else
2291 struct sigaction sa; 3501 struct sigaction sa;
3502
3503 evpipe_init (EV_A);
3504
2292 sa.sa_handler = ev_sighandler; 3505 sa.sa_handler = ev_sighandler;
2293 sigfillset (&sa.sa_mask); 3506 sigfillset (&sa.sa_mask);
2294 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3507 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2295 sigaction (w->signum, &sa, 0); 3508 sigaction (w->signum, &sa, 0);
3509
3510 if (origflags & EVFLAG_NOSIGMASK)
3511 {
3512 sigemptyset (&sa.sa_mask);
3513 sigaddset (&sa.sa_mask, w->signum);
3514 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3515 }
2296#endif 3516#endif
2297 } 3517 }
2298 3518
2299 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2300} 3520}
2301 3521
2302void noinline 3522void noinline
2303ev_signal_stop (EV_P_ ev_signal *w) 3523ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2304{ 3524{
2305 clear_pending (EV_A_ (W)w); 3525 clear_pending (EV_A_ (W)w);
2306 if (expect_false (!ev_is_active (w))) 3526 if (expect_false (!ev_is_active (w)))
2307 return; 3527 return;
2308 3528
… …
2310 3530
2311 wlist_del (&signals [w->signum - 1].head, (WL)w); 3531 wlist_del (&signals [w->signum - 1].head, (WL)w);
2312 ev_stop (EV_A_ (W)w); 3532 ev_stop (EV_A_ (W)w);
2313 3533
2314 if (!signals [w->signum - 1].head) 3534 if (!signals [w->signum - 1].head)
3535 {
3536#if EV_MULTIPLICITY
3537 signals [w->signum - 1].loop = 0; /* unattach from signal */
3538#endif
3539#if EV_USE_SIGNALFD
3540 if (sigfd >= 0)
3541 {
3542 sigset_t ss;
3543
3544 sigemptyset (&ss);
3545 sigaddset (&ss, w->signum);
3546 sigdelset (&sigfd_set, w->signum);
3547
3548 signalfd (sigfd, &sigfd_set, 0);
3549 sigprocmask (SIG_UNBLOCK, &ss, 0);
3550 }
3551 else
3552#endif
2315 signal (w->signum, SIG_DFL); 3553 signal (w->signum, SIG_DFL);
3554 }
2316 3555
2317 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2318} 3557}
3558
3559#endif
3560
3561#if EV_CHILD_ENABLE
2319 3562
2320void 3563void
2321ev_child_start (EV_P_ ev_child *w) 3564ev_child_start (EV_P_ ev_child *w) EV_THROW
2322{ 3565{
2323#if EV_MULTIPLICITY 3566#if EV_MULTIPLICITY
2324 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3567 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2325#endif 3568#endif
2326 if (expect_false (ev_is_active (w))) 3569 if (expect_false (ev_is_active (w)))
2327 return; 3570 return;
2328 3571
2329 EV_FREQUENT_CHECK; 3572 EV_FREQUENT_CHECK;
2330 3573
2331 ev_start (EV_A_ (W)w, 1); 3574 ev_start (EV_A_ (W)w, 1);
2332 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3575 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2333 3576
2334 EV_FREQUENT_CHECK; 3577 EV_FREQUENT_CHECK;
2335} 3578}
2336 3579
2337void 3580void
2338ev_child_stop (EV_P_ ev_child *w) 3581ev_child_stop (EV_P_ ev_child *w) EV_THROW
2339{ 3582{
2340 clear_pending (EV_A_ (W)w); 3583 clear_pending (EV_A_ (W)w);
2341 if (expect_false (!ev_is_active (w))) 3584 if (expect_false (!ev_is_active (w)))
2342 return; 3585 return;
2343 3586
2344 EV_FREQUENT_CHECK; 3587 EV_FREQUENT_CHECK;
2345 3588
2346 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3589 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2347 ev_stop (EV_A_ (W)w); 3590 ev_stop (EV_A_ (W)w);
2348 3591
2349 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2350} 3593}
3594
3595#endif
2351 3596
2352#if EV_STAT_ENABLE 3597#if EV_STAT_ENABLE
2353 3598
2354# ifdef _WIN32 3599# ifdef _WIN32
2355# undef lstat 3600# undef lstat
2356# define lstat(a,b) _stati64 (a,b) 3601# define lstat(a,b) _stati64 (a,b)
2357# endif 3602# endif
2358 3603
2359#define DEF_STAT_INTERVAL 5.0074891 3604#define DEF_STAT_INTERVAL 5.0074891
3605#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2360#define MIN_STAT_INTERVAL 0.1074891 3606#define MIN_STAT_INTERVAL 0.1074891
2361 3607
2362static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3608static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2363 3609
2364#if EV_USE_INOTIFY 3610#if EV_USE_INOTIFY
2365# define EV_INOTIFY_BUFSIZE 8192 3611
3612/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3613# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2366 3614
2367static void noinline 3615static void noinline
2368infy_add (EV_P_ ev_stat *w) 3616infy_add (EV_P_ ev_stat *w)
2369{ 3617{
2370 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); 3618 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);
2371 3619
2372 if (w->wd < 0) 3620 if (w->wd >= 0)
3621 {
3622 struct statfs sfs;
3623
3624 /* now local changes will be tracked by inotify, but remote changes won't */
3625 /* unless the filesystem is known to be local, we therefore still poll */
3626 /* also do poll on <2.6.25, but with normal frequency */
3627
3628 if (!fs_2625)
3629 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3630 else if (!statfs (w->path, &sfs)
3631 && (sfs.f_type == 0x1373 /* devfs */
3632 || sfs.f_type == 0xEF53 /* ext2/3 */
3633 || sfs.f_type == 0x3153464a /* jfs */
3634 || sfs.f_type == 0x52654973 /* reiser3 */
3635 || sfs.f_type == 0x01021994 /* tempfs */
3636 || sfs.f_type == 0x58465342 /* xfs */))
3637 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3638 else
3639 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2373 { 3640 }
2374 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3641 else
3642 {
3643 /* can't use inotify, continue to stat */
3644 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2375 3645
2376 /* monitor some parent directory for speedup hints */ 3646 /* if path is not there, monitor some parent directory for speedup hints */
2377 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3647 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2378 /* but an efficiency issue only */ 3648 /* but an efficiency issue only */
2379 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3649 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2380 { 3650 {
2381 char path [4096]; 3651 char path [4096];
2382 strcpy (path, w->path); 3652 strcpy (path, w->path);
… …
2386 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3656 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2387 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3657 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2388 3658
2389 char *pend = strrchr (path, '/'); 3659 char *pend = strrchr (path, '/');
2390 3660
2391 if (!pend) 3661 if (!pend || pend == path)
2392 break; /* whoops, no '/', complain to your admin */ 3662 break;
2393 3663
2394 *pend = 0; 3664 *pend = 0;
2395 w->wd = inotify_add_watch (fs_fd, path, mask); 3665 w->wd = inotify_add_watch (fs_fd, path, mask);
2396 } 3666 }
2397 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3667 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2398 } 3668 }
2399 } 3669 }
2400 else
2401 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2402 3670
2403 if (w->wd >= 0) 3671 if (w->wd >= 0)
2404 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3672 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3673
3674 /* now re-arm timer, if required */
3675 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3676 ev_timer_again (EV_A_ &w->timer);
3677 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2405} 3678}
2406 3679
2407static void noinline 3680static void noinline
2408infy_del (EV_P_ ev_stat *w) 3681infy_del (EV_P_ ev_stat *w)
2409{ 3682{
… …
2412 3685
2413 if (wd < 0) 3686 if (wd < 0)
2414 return; 3687 return;
2415 3688
2416 w->wd = -2; 3689 w->wd = -2;
2417 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3690 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2418 wlist_del (&fs_hash [slot].head, (WL)w); 3691 wlist_del (&fs_hash [slot].head, (WL)w);
2419 3692
2420 /* remove this watcher, if others are watching it, they will rearm */ 3693 /* remove this watcher, if others are watching it, they will rearm */
2421 inotify_rm_watch (fs_fd, wd); 3694 inotify_rm_watch (fs_fd, wd);
2422} 3695}
2423 3696
2424static void noinline 3697static void noinline
2425infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3698infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2426{ 3699{
2427 if (slot < 0) 3700 if (slot < 0)
2428 /* overflow, need to check for all hahs slots */ 3701 /* overflow, need to check for all hash slots */
2429 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3702 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2430 infy_wd (EV_A_ slot, wd, ev); 3703 infy_wd (EV_A_ slot, wd, ev);
2431 else 3704 else
2432 { 3705 {
2433 WL w_; 3706 WL w_;
2434 3707
2435 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3708 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2436 { 3709 {
2437 ev_stat *w = (ev_stat *)w_; 3710 ev_stat *w = (ev_stat *)w_;
2438 w_ = w_->next; /* lets us remove this watcher and all before it */ 3711 w_ = w_->next; /* lets us remove this watcher and all before it */
2439 3712
2440 if (w->wd == wd || wd == -1) 3713 if (w->wd == wd || wd == -1)
2441 { 3714 {
2442 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3715 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2443 { 3716 {
3717 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2444 w->wd = -1; 3718 w->wd = -1;
2445 infy_add (EV_A_ w); /* re-add, no matter what */ 3719 infy_add (EV_A_ w); /* re-add, no matter what */
2446 } 3720 }
2447 3721
2448 stat_timer_cb (EV_A_ &w->timer, 0); 3722 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2453 3727
2454static void 3728static void
2455infy_cb (EV_P_ ev_io *w, int revents) 3729infy_cb (EV_P_ ev_io *w, int revents)
2456{ 3730{
2457 char buf [EV_INOTIFY_BUFSIZE]; 3731 char buf [EV_INOTIFY_BUFSIZE];
2458 struct inotify_event *ev = (struct inotify_event *)buf;
2459 int ofs; 3732 int ofs;
2460 int len = read (fs_fd, buf, sizeof (buf)); 3733 int len = read (fs_fd, buf, sizeof (buf));
2461 3734
2462 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3735 for (ofs = 0; ofs < len; )
3736 {
3737 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2463 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3738 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3739 ofs += sizeof (struct inotify_event) + ev->len;
3740 }
2464} 3741}
2465 3742
2466void inline_size 3743inline_size void ecb_cold
3744ev_check_2625 (EV_P)
3745{
3746 /* kernels < 2.6.25 are borked
3747 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3748 */
3749 if (ev_linux_version () < 0x020619)
3750 return;
3751
3752 fs_2625 = 1;
3753}
3754
3755inline_size int
3756infy_newfd (void)
3757{
3758#if defined IN_CLOEXEC && defined IN_NONBLOCK
3759 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3760 if (fd >= 0)
3761 return fd;
3762#endif
3763 return inotify_init ();
3764}
3765
3766inline_size void
2467infy_init (EV_P) 3767infy_init (EV_P)
2468{ 3768{
2469 if (fs_fd != -2) 3769 if (fs_fd != -2)
2470 return; 3770 return;
2471 3771
3772 fs_fd = -1;
3773
3774 ev_check_2625 (EV_A);
3775
2472 fs_fd = inotify_init (); 3776 fs_fd = infy_newfd ();
2473 3777
2474 if (fs_fd >= 0) 3778 if (fs_fd >= 0)
2475 { 3779 {
3780 fd_intern (fs_fd);
2476 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3781 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2477 ev_set_priority (&fs_w, EV_MAXPRI); 3782 ev_set_priority (&fs_w, EV_MAXPRI);
2478 ev_io_start (EV_A_ &fs_w); 3783 ev_io_start (EV_A_ &fs_w);
3784 ev_unref (EV_A);
2479 } 3785 }
2480} 3786}
2481 3787
2482void inline_size 3788inline_size void
2483infy_fork (EV_P) 3789infy_fork (EV_P)
2484{ 3790{
2485 int slot; 3791 int slot;
2486 3792
2487 if (fs_fd < 0) 3793 if (fs_fd < 0)
2488 return; 3794 return;
2489 3795
3796 ev_ref (EV_A);
3797 ev_io_stop (EV_A_ &fs_w);
2490 close (fs_fd); 3798 close (fs_fd);
2491 fs_fd = inotify_init (); 3799 fs_fd = infy_newfd ();
2492 3800
3801 if (fs_fd >= 0)
3802 {
3803 fd_intern (fs_fd);
3804 ev_io_set (&fs_w, fs_fd, EV_READ);
3805 ev_io_start (EV_A_ &fs_w);
3806 ev_unref (EV_A);
3807 }
3808
2493 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3809 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2494 { 3810 {
2495 WL w_ = fs_hash [slot].head; 3811 WL w_ = fs_hash [slot].head;
2496 fs_hash [slot].head = 0; 3812 fs_hash [slot].head = 0;
2497 3813
2498 while (w_) 3814 while (w_)
… …
2503 w->wd = -1; 3819 w->wd = -1;
2504 3820
2505 if (fs_fd >= 0) 3821 if (fs_fd >= 0)
2506 infy_add (EV_A_ w); /* re-add, no matter what */ 3822 infy_add (EV_A_ w); /* re-add, no matter what */
2507 else 3823 else
3824 {
3825 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3826 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2508 ev_timer_start (EV_A_ &w->timer); 3827 ev_timer_again (EV_A_ &w->timer);
3828 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3829 }
2509 } 3830 }
2510
2511 } 3831 }
2512} 3832}
2513 3833
3834#endif
3835
3836#ifdef _WIN32
3837# define EV_LSTAT(p,b) _stati64 (p, b)
3838#else
3839# define EV_LSTAT(p,b) lstat (p, b)
2514#endif 3840#endif
2515 3841
2516void 3842void
2517ev_stat_stat (EV_P_ ev_stat *w) 3843ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2518{ 3844{
2519 if (lstat (w->path, &w->attr) < 0) 3845 if (lstat (w->path, &w->attr) < 0)
2520 w->attr.st_nlink = 0; 3846 w->attr.st_nlink = 0;
2521 else if (!w->attr.st_nlink) 3847 else if (!w->attr.st_nlink)
2522 w->attr.st_nlink = 1; 3848 w->attr.st_nlink = 1;
… …
2525static void noinline 3851static void noinline
2526stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3852stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2527{ 3853{
2528 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3854 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2529 3855
2530 /* we copy this here each the time so that */ 3856 ev_statdata prev = w->attr;
2531 /* prev has the old value when the callback gets invoked */
2532 w->prev = w->attr;
2533 ev_stat_stat (EV_A_ w); 3857 ev_stat_stat (EV_A_ w);
2534 3858
2535 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3859 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2536 if ( 3860 if (
2537 w->prev.st_dev != w->attr.st_dev 3861 prev.st_dev != w->attr.st_dev
2538 || w->prev.st_ino != w->attr.st_ino 3862 || prev.st_ino != w->attr.st_ino
2539 || w->prev.st_mode != w->attr.st_mode 3863 || prev.st_mode != w->attr.st_mode
2540 || w->prev.st_nlink != w->attr.st_nlink 3864 || prev.st_nlink != w->attr.st_nlink
2541 || w->prev.st_uid != w->attr.st_uid 3865 || prev.st_uid != w->attr.st_uid
2542 || w->prev.st_gid != w->attr.st_gid 3866 || prev.st_gid != w->attr.st_gid
2543 || w->prev.st_rdev != w->attr.st_rdev 3867 || prev.st_rdev != w->attr.st_rdev
2544 || w->prev.st_size != w->attr.st_size 3868 || prev.st_size != w->attr.st_size
2545 || w->prev.st_atime != w->attr.st_atime 3869 || prev.st_atime != w->attr.st_atime
2546 || w->prev.st_mtime != w->attr.st_mtime 3870 || prev.st_mtime != w->attr.st_mtime
2547 || w->prev.st_ctime != w->attr.st_ctime 3871 || prev.st_ctime != w->attr.st_ctime
2548 ) { 3872 ) {
3873 /* we only update w->prev on actual differences */
3874 /* in case we test more often than invoke the callback, */
3875 /* to ensure that prev is always different to attr */
3876 w->prev = prev;
3877
2549 #if EV_USE_INOTIFY 3878 #if EV_USE_INOTIFY
3879 if (fs_fd >= 0)
3880 {
2550 infy_del (EV_A_ w); 3881 infy_del (EV_A_ w);
2551 infy_add (EV_A_ w); 3882 infy_add (EV_A_ w);
2552 ev_stat_stat (EV_A_ w); /* avoid race... */ 3883 ev_stat_stat (EV_A_ w); /* avoid race... */
3884 }
2553 #endif 3885 #endif
2554 3886
2555 ev_feed_event (EV_A_ w, EV_STAT); 3887 ev_feed_event (EV_A_ w, EV_STAT);
2556 } 3888 }
2557} 3889}
2558 3890
2559void 3891void
2560ev_stat_start (EV_P_ ev_stat *w) 3892ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2561{ 3893{
2562 if (expect_false (ev_is_active (w))) 3894 if (expect_false (ev_is_active (w)))
2563 return; 3895 return;
2564 3896
2565 /* since we use memcmp, we need to clear any padding data etc. */
2566 memset (&w->prev, 0, sizeof (ev_statdata));
2567 memset (&w->attr, 0, sizeof (ev_statdata));
2568
2569 ev_stat_stat (EV_A_ w); 3897 ev_stat_stat (EV_A_ w);
2570 3898
3899 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2571 if (w->interval < MIN_STAT_INTERVAL) 3900 w->interval = MIN_STAT_INTERVAL;
2572 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2573 3901
2574 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3902 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2575 ev_set_priority (&w->timer, ev_priority (w)); 3903 ev_set_priority (&w->timer, ev_priority (w));
2576 3904
2577#if EV_USE_INOTIFY 3905#if EV_USE_INOTIFY
2578 infy_init (EV_A); 3906 infy_init (EV_A);
2579 3907
2580 if (fs_fd >= 0) 3908 if (fs_fd >= 0)
2581 infy_add (EV_A_ w); 3909 infy_add (EV_A_ w);
2582 else 3910 else
2583#endif 3911#endif
3912 {
2584 ev_timer_start (EV_A_ &w->timer); 3913 ev_timer_again (EV_A_ &w->timer);
3914 ev_unref (EV_A);
3915 }
2585 3916
2586 ev_start (EV_A_ (W)w, 1); 3917 ev_start (EV_A_ (W)w, 1);
2587 3918
2588 EV_FREQUENT_CHECK; 3919 EV_FREQUENT_CHECK;
2589} 3920}
2590 3921
2591void 3922void
2592ev_stat_stop (EV_P_ ev_stat *w) 3923ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2593{ 3924{
2594 clear_pending (EV_A_ (W)w); 3925 clear_pending (EV_A_ (W)w);
2595 if (expect_false (!ev_is_active (w))) 3926 if (expect_false (!ev_is_active (w)))
2596 return; 3927 return;
2597 3928
2598 EV_FREQUENT_CHECK; 3929 EV_FREQUENT_CHECK;
2599 3930
2600#if EV_USE_INOTIFY 3931#if EV_USE_INOTIFY
2601 infy_del (EV_A_ w); 3932 infy_del (EV_A_ w);
2602#endif 3933#endif
3934
3935 if (ev_is_active (&w->timer))
3936 {
3937 ev_ref (EV_A);
2603 ev_timer_stop (EV_A_ &w->timer); 3938 ev_timer_stop (EV_A_ &w->timer);
3939 }
2604 3940
2605 ev_stop (EV_A_ (W)w); 3941 ev_stop (EV_A_ (W)w);
2606 3942
2607 EV_FREQUENT_CHECK; 3943 EV_FREQUENT_CHECK;
2608} 3944}
2609#endif 3945#endif
2610 3946
2611#if EV_IDLE_ENABLE 3947#if EV_IDLE_ENABLE
2612void 3948void
2613ev_idle_start (EV_P_ ev_idle *w) 3949ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2614{ 3950{
2615 if (expect_false (ev_is_active (w))) 3951 if (expect_false (ev_is_active (w)))
2616 return; 3952 return;
2617 3953
2618 pri_adjust (EV_A_ (W)w); 3954 pri_adjust (EV_A_ (W)w);
… …
2631 3967
2632 EV_FREQUENT_CHECK; 3968 EV_FREQUENT_CHECK;
2633} 3969}
2634 3970
2635void 3971void
2636ev_idle_stop (EV_P_ ev_idle *w) 3972ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2637{ 3973{
2638 clear_pending (EV_A_ (W)w); 3974 clear_pending (EV_A_ (W)w);
2639 if (expect_false (!ev_is_active (w))) 3975 if (expect_false (!ev_is_active (w)))
2640 return; 3976 return;
2641 3977
… …
2653 3989
2654 EV_FREQUENT_CHECK; 3990 EV_FREQUENT_CHECK;
2655} 3991}
2656#endif 3992#endif
2657 3993
3994#if EV_PREPARE_ENABLE
2658void 3995void
2659ev_prepare_start (EV_P_ ev_prepare *w) 3996ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2660{ 3997{
2661 if (expect_false (ev_is_active (w))) 3998 if (expect_false (ev_is_active (w)))
2662 return; 3999 return;
2663 4000
2664 EV_FREQUENT_CHECK; 4001 EV_FREQUENT_CHECK;
… …
2669 4006
2670 EV_FREQUENT_CHECK; 4007 EV_FREQUENT_CHECK;
2671} 4008}
2672 4009
2673void 4010void
2674ev_prepare_stop (EV_P_ ev_prepare *w) 4011ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2675{ 4012{
2676 clear_pending (EV_A_ (W)w); 4013 clear_pending (EV_A_ (W)w);
2677 if (expect_false (!ev_is_active (w))) 4014 if (expect_false (!ev_is_active (w)))
2678 return; 4015 return;
2679 4016
… …
2688 4025
2689 ev_stop (EV_A_ (W)w); 4026 ev_stop (EV_A_ (W)w);
2690 4027
2691 EV_FREQUENT_CHECK; 4028 EV_FREQUENT_CHECK;
2692} 4029}
4030#endif
2693 4031
4032#if EV_CHECK_ENABLE
2694void 4033void
2695ev_check_start (EV_P_ ev_check *w) 4034ev_check_start (EV_P_ ev_check *w) EV_THROW
2696{ 4035{
2697 if (expect_false (ev_is_active (w))) 4036 if (expect_false (ev_is_active (w)))
2698 return; 4037 return;
2699 4038
2700 EV_FREQUENT_CHECK; 4039 EV_FREQUENT_CHECK;
… …
2705 4044
2706 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2707} 4046}
2708 4047
2709void 4048void
2710ev_check_stop (EV_P_ ev_check *w) 4049ev_check_stop (EV_P_ ev_check *w) EV_THROW
2711{ 4050{
2712 clear_pending (EV_A_ (W)w); 4051 clear_pending (EV_A_ (W)w);
2713 if (expect_false (!ev_is_active (w))) 4052 if (expect_false (!ev_is_active (w)))
2714 return; 4053 return;
2715 4054
… …
2724 4063
2725 ev_stop (EV_A_ (W)w); 4064 ev_stop (EV_A_ (W)w);
2726 4065
2727 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
2728} 4067}
4068#endif
2729 4069
2730#if EV_EMBED_ENABLE 4070#if EV_EMBED_ENABLE
2731void noinline 4071void noinline
2732ev_embed_sweep (EV_P_ ev_embed *w) 4072ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2733{ 4073{
2734 ev_loop (w->other, EVLOOP_NONBLOCK); 4074 ev_run (w->other, EVRUN_NOWAIT);
2735} 4075}
2736 4076
2737static void 4077static void
2738embed_io_cb (EV_P_ ev_io *io, int revents) 4078embed_io_cb (EV_P_ ev_io *io, int revents)
2739{ 4079{
2740 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4080 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2741 4081
2742 if (ev_cb (w)) 4082 if (ev_cb (w))
2743 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4083 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2744 else 4084 else
2745 ev_loop (w->other, EVLOOP_NONBLOCK); 4085 ev_run (w->other, EVRUN_NOWAIT);
2746} 4086}
2747 4087
2748static void 4088static void
2749embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4089embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2750{ 4090{
2751 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4091 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2752 4092
2753 { 4093 {
2754 struct ev_loop *loop = w->other; 4094 EV_P = w->other;
2755 4095
2756 while (fdchangecnt) 4096 while (fdchangecnt)
2757 { 4097 {
2758 fd_reify (EV_A); 4098 fd_reify (EV_A);
2759 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4099 ev_run (EV_A_ EVRUN_NOWAIT);
2760 } 4100 }
2761 } 4101 }
4102}
4103
4104static void
4105embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4106{
4107 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4108
4109 ev_embed_stop (EV_A_ w);
4110
4111 {
4112 EV_P = w->other;
4113
4114 ev_loop_fork (EV_A);
4115 ev_run (EV_A_ EVRUN_NOWAIT);
4116 }
4117
4118 ev_embed_start (EV_A_ w);
2762} 4119}
2763 4120
2764#if 0 4121#if 0
2765static void 4122static void
2766embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4123embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2768 ev_idle_stop (EV_A_ idle); 4125 ev_idle_stop (EV_A_ idle);
2769} 4126}
2770#endif 4127#endif
2771 4128
2772void 4129void
2773ev_embed_start (EV_P_ ev_embed *w) 4130ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2774{ 4131{
2775 if (expect_false (ev_is_active (w))) 4132 if (expect_false (ev_is_active (w)))
2776 return; 4133 return;
2777 4134
2778 { 4135 {
2779 struct ev_loop *loop = w->other; 4136 EV_P = w->other;
2780 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4137 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2781 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4138 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2782 } 4139 }
2783 4140
2784 EV_FREQUENT_CHECK; 4141 EV_FREQUENT_CHECK;
2785 4142
… …
2788 4145
2789 ev_prepare_init (&w->prepare, embed_prepare_cb); 4146 ev_prepare_init (&w->prepare, embed_prepare_cb);
2790 ev_set_priority (&w->prepare, EV_MINPRI); 4147 ev_set_priority (&w->prepare, EV_MINPRI);
2791 ev_prepare_start (EV_A_ &w->prepare); 4148 ev_prepare_start (EV_A_ &w->prepare);
2792 4149
4150 ev_fork_init (&w->fork, embed_fork_cb);
4151 ev_fork_start (EV_A_ &w->fork);
4152
2793 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 4153 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2794 4154
2795 ev_start (EV_A_ (W)w, 1); 4155 ev_start (EV_A_ (W)w, 1);
2796 4156
2797 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
2798} 4158}
2799 4159
2800void 4160void
2801ev_embed_stop (EV_P_ ev_embed *w) 4161ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2802{ 4162{
2803 clear_pending (EV_A_ (W)w); 4163 clear_pending (EV_A_ (W)w);
2804 if (expect_false (!ev_is_active (w))) 4164 if (expect_false (!ev_is_active (w)))
2805 return; 4165 return;
2806 4166
2807 EV_FREQUENT_CHECK; 4167 EV_FREQUENT_CHECK;
2808 4168
2809 ev_io_stop (EV_A_ &w->io); 4169 ev_io_stop (EV_A_ &w->io);
2810 ev_prepare_stop (EV_A_ &w->prepare); 4170 ev_prepare_stop (EV_A_ &w->prepare);
4171 ev_fork_stop (EV_A_ &w->fork);
2811 4172
2812 ev_stop (EV_A_ (W)w); 4173 ev_stop (EV_A_ (W)w);
2813 4174
2814 EV_FREQUENT_CHECK; 4175 EV_FREQUENT_CHECK;
2815} 4176}
2816#endif 4177#endif
2817 4178
2818#if EV_FORK_ENABLE 4179#if EV_FORK_ENABLE
2819void 4180void
2820ev_fork_start (EV_P_ ev_fork *w) 4181ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2821{ 4182{
2822 if (expect_false (ev_is_active (w))) 4183 if (expect_false (ev_is_active (w)))
2823 return; 4184 return;
2824 4185
2825 EV_FREQUENT_CHECK; 4186 EV_FREQUENT_CHECK;
… …
2830 4191
2831 EV_FREQUENT_CHECK; 4192 EV_FREQUENT_CHECK;
2832} 4193}
2833 4194
2834void 4195void
2835ev_fork_stop (EV_P_ ev_fork *w) 4196ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
2836{ 4197{
2837 clear_pending (EV_A_ (W)w); 4198 clear_pending (EV_A_ (W)w);
2838 if (expect_false (!ev_is_active (w))) 4199 if (expect_false (!ev_is_active (w)))
2839 return; 4200 return;
2840 4201
… …
2851 4212
2852 EV_FREQUENT_CHECK; 4213 EV_FREQUENT_CHECK;
2853} 4214}
2854#endif 4215#endif
2855 4216
4217#if EV_CLEANUP_ENABLE
4218void
4219ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4220{
4221 if (expect_false (ev_is_active (w)))
4222 return;
4223
4224 EV_FREQUENT_CHECK;
4225
4226 ev_start (EV_A_ (W)w, ++cleanupcnt);
4227 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4228 cleanups [cleanupcnt - 1] = w;
4229
4230 /* cleanup watchers should never keep a refcount on the loop */
4231 ev_unref (EV_A);
4232 EV_FREQUENT_CHECK;
4233}
4234
4235void
4236ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4237{
4238 clear_pending (EV_A_ (W)w);
4239 if (expect_false (!ev_is_active (w)))
4240 return;
4241
4242 EV_FREQUENT_CHECK;
4243 ev_ref (EV_A);
4244
4245 {
4246 int active = ev_active (w);
4247
4248 cleanups [active - 1] = cleanups [--cleanupcnt];
4249 ev_active (cleanups [active - 1]) = active;
4250 }
4251
4252 ev_stop (EV_A_ (W)w);
4253
4254 EV_FREQUENT_CHECK;
4255}
4256#endif
4257
2856#if EV_ASYNC_ENABLE 4258#if EV_ASYNC_ENABLE
2857void 4259void
2858ev_async_start (EV_P_ ev_async *w) 4260ev_async_start (EV_P_ ev_async *w) EV_THROW
2859{ 4261{
2860 if (expect_false (ev_is_active (w))) 4262 if (expect_false (ev_is_active (w)))
2861 return; 4263 return;
4264
4265 w->sent = 0;
2862 4266
2863 evpipe_init (EV_A); 4267 evpipe_init (EV_A);
2864 4268
2865 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
2866 4270
… …
2870 4274
2871 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
2872} 4276}
2873 4277
2874void 4278void
2875ev_async_stop (EV_P_ ev_async *w) 4279ev_async_stop (EV_P_ ev_async *w) EV_THROW
2876{ 4280{
2877 clear_pending (EV_A_ (W)w); 4281 clear_pending (EV_A_ (W)w);
2878 if (expect_false (!ev_is_active (w))) 4282 if (expect_false (!ev_is_active (w)))
2879 return; 4283 return;
2880 4284
… …
2891 4295
2892 EV_FREQUENT_CHECK; 4296 EV_FREQUENT_CHECK;
2893} 4297}
2894 4298
2895void 4299void
2896ev_async_send (EV_P_ ev_async *w) 4300ev_async_send (EV_P_ ev_async *w) EV_THROW
2897{ 4301{
2898 w->sent = 1; 4302 w->sent = 1;
2899 evpipe_write (EV_A_ &gotasync); 4303 evpipe_write (EV_A_ &async_pending);
2900} 4304}
2901#endif 4305#endif
2902 4306
2903/*****************************************************************************/ 4307/*****************************************************************************/
2904 4308
… …
2914once_cb (EV_P_ struct ev_once *once, int revents) 4318once_cb (EV_P_ struct ev_once *once, int revents)
2915{ 4319{
2916 void (*cb)(int revents, void *arg) = once->cb; 4320 void (*cb)(int revents, void *arg) = once->cb;
2917 void *arg = once->arg; 4321 void *arg = once->arg;
2918 4322
2919 ev_io_stop (EV_A_ &once->io); 4323 ev_io_stop (EV_A_ &once->io);
2920 ev_timer_stop (EV_A_ &once->to); 4324 ev_timer_stop (EV_A_ &once->to);
2921 ev_free (once); 4325 ev_free (once);
2922 4326
2923 cb (revents, arg); 4327 cb (revents, arg);
2924} 4328}
2925 4329
2926static void 4330static void
2927once_cb_io (EV_P_ ev_io *w, int revents) 4331once_cb_io (EV_P_ ev_io *w, int revents)
2928{ 4332{
2929 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 4333 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
4334
4335 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2930} 4336}
2931 4337
2932static void 4338static void
2933once_cb_to (EV_P_ ev_timer *w, int revents) 4339once_cb_to (EV_P_ ev_timer *w, int revents)
2934{ 4340{
2935 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 4341 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
4342
4343 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2936} 4344}
2937 4345
2938void 4346void
2939ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4347ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
2940{ 4348{
2941 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4349 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2942 4350
2943 if (expect_false (!once)) 4351 if (expect_false (!once))
2944 { 4352 {
2945 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4353 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2946 return; 4354 return;
2947 } 4355 }
2948 4356
2949 once->cb = cb; 4357 once->cb = cb;
2950 once->arg = arg; 4358 once->arg = arg;
… …
2962 ev_timer_set (&once->to, timeout, 0.); 4370 ev_timer_set (&once->to, timeout, 0.);
2963 ev_timer_start (EV_A_ &once->to); 4371 ev_timer_start (EV_A_ &once->to);
2964 } 4372 }
2965} 4373}
2966 4374
4375/*****************************************************************************/
4376
4377#if EV_WALK_ENABLE
4378void ecb_cold
4379ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4380{
4381 int i, j;
4382 ev_watcher_list *wl, *wn;
4383
4384 if (types & (EV_IO | EV_EMBED))
4385 for (i = 0; i < anfdmax; ++i)
4386 for (wl = anfds [i].head; wl; )
4387 {
4388 wn = wl->next;
4389
4390#if EV_EMBED_ENABLE
4391 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4392 {
4393 if (types & EV_EMBED)
4394 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4395 }
4396 else
4397#endif
4398#if EV_USE_INOTIFY
4399 if (ev_cb ((ev_io *)wl) == infy_cb)
4400 ;
4401 else
4402#endif
4403 if ((ev_io *)wl != &pipe_w)
4404 if (types & EV_IO)
4405 cb (EV_A_ EV_IO, wl);
4406
4407 wl = wn;
4408 }
4409
4410 if (types & (EV_TIMER | EV_STAT))
4411 for (i = timercnt + HEAP0; i-- > HEAP0; )
4412#if EV_STAT_ENABLE
4413 /*TODO: timer is not always active*/
4414 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4415 {
4416 if (types & EV_STAT)
4417 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4418 }
4419 else
4420#endif
4421 if (types & EV_TIMER)
4422 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4423
4424#if EV_PERIODIC_ENABLE
4425 if (types & EV_PERIODIC)
4426 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4427 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4428#endif
4429
4430#if EV_IDLE_ENABLE
4431 if (types & EV_IDLE)
4432 for (j = NUMPRI; j--; )
4433 for (i = idlecnt [j]; i--; )
4434 cb (EV_A_ EV_IDLE, idles [j][i]);
4435#endif
4436
4437#if EV_FORK_ENABLE
4438 if (types & EV_FORK)
4439 for (i = forkcnt; i--; )
4440 if (ev_cb (forks [i]) != embed_fork_cb)
4441 cb (EV_A_ EV_FORK, forks [i]);
4442#endif
4443
4444#if EV_ASYNC_ENABLE
4445 if (types & EV_ASYNC)
4446 for (i = asynccnt; i--; )
4447 cb (EV_A_ EV_ASYNC, asyncs [i]);
4448#endif
4449
4450#if EV_PREPARE_ENABLE
4451 if (types & EV_PREPARE)
4452 for (i = preparecnt; i--; )
4453# if EV_EMBED_ENABLE
4454 if (ev_cb (prepares [i]) != embed_prepare_cb)
4455# endif
4456 cb (EV_A_ EV_PREPARE, prepares [i]);
4457#endif
4458
4459#if EV_CHECK_ENABLE
4460 if (types & EV_CHECK)
4461 for (i = checkcnt; i--; )
4462 cb (EV_A_ EV_CHECK, checks [i]);
4463#endif
4464
4465#if EV_SIGNAL_ENABLE
4466 if (types & EV_SIGNAL)
4467 for (i = 0; i < EV_NSIG - 1; ++i)
4468 for (wl = signals [i].head; wl; )
4469 {
4470 wn = wl->next;
4471 cb (EV_A_ EV_SIGNAL, wl);
4472 wl = wn;
4473 }
4474#endif
4475
4476#if EV_CHILD_ENABLE
4477 if (types & EV_CHILD)
4478 for (i = (EV_PID_HASHSIZE); i--; )
4479 for (wl = childs [i]; wl; )
4480 {
4481 wn = wl->next;
4482 cb (EV_A_ EV_CHILD, wl);
4483 wl = wn;
4484 }
4485#endif
4486/* EV_STAT 0x00001000 /* stat data changed */
4487/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4488}
4489#endif
4490
2967#if EV_MULTIPLICITY 4491#if EV_MULTIPLICITY
2968 #include "ev_wrap.h" 4492 #include "ev_wrap.h"
2969#endif 4493#endif
2970 4494
2971#ifdef __cplusplus
2972}
2973#endif
2974

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