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Comparing libev/ev.c (file contents):
Revision 1.302 by root, Thu Jul 16 15:08:08 2009 UTC vs.
Revision 1.419 by root, Thu Apr 12 04:10:15 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 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
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# 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
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# 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
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# 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
166#endif 197#endif
167 198
168#ifndef _WIN32 199#ifndef _WIN32
169# include <sys/time.h> 200# include <sys/time.h>
170# include <sys/wait.h> 201# include <sys/wait.h>
… …
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
175# include <windows.h> 206# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
178# endif 209# endif
210# undef EV_AVOID_STDIO
179#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
180 220
181/* 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 */
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
182 254
183#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 258# else
187# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
188# endif 260# endif
189#endif 261#endif
190 262
191#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 266# else
195# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
196# endif 268# endif
197#endif 269#endif
198 270
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 273#endif
202 274
203#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 278# else
207# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
208# endif 280# endif
209#endif 281#endif
210 282
211#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 285#endif
214 286
215#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
216# ifdef _WIN32 288# ifdef _WIN32
217# define EV_USE_POLL 0 289# define EV_USE_POLL 0
218# else 290# else
219# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 292# endif
221#endif 293#endif
222 294
223#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 298# else
227# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
228# endif 300# endif
229#endif 301#endif
230 302
… …
236# define EV_USE_PORT 0 308# define EV_USE_PORT 0
237#endif 309#endif
238 310
239#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 314# else
243# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
244# endif 316# endif
245#endif 317#endif
246 318
247#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 321#endif
254 322
255#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 325#endif
262 326
263#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 330# else
267# 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
268# endif 340# endif
269#endif 341#endif
270 342
271#if 0 /* debugging */ 343#if 0 /* debugging */
272# define EV_VERIFY 3 344# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
275#endif 347#endif
276 348
277#ifndef EV_VERIFY 349#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 351#endif
280 352
281#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 355#endif
284 356
285#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 359#endif
288 360
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 362/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 363#if EV_USE_CLOCK_SYSCALL
… …
300# endif 372# endif
301#endif 373#endif
302 374
303/* 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 */
304 376
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
382
305#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
308#endif 386#endif
309 387
… …
316# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
318#endif 396#endif
319 397
320#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 401# include <sys/select.h>
323# endif 402# endif
324#endif 403#endif
325 404
326#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 406# include <sys/statfs.h>
329# include <sys/inotify.h> 407# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
339#endif 417#endif
340 418
341#if EV_USE_EVENTFD 419#if EV_USE_EVENTFD
342/* 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 */
343# include <stdint.h> 421# include <stdint.h>
344# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
345extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
346# endif 424# endif
347int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 426# ifdef O_CLOEXEC
349} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
350# 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};
351#endif 455#endif
352 456
353/**/ 457/**/
354 458
355#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 461#else
358# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
359#endif 463#endif
360 464
361/* 465/*
362 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 468 */
369#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 */
370 471
371#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) */
372#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) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 474
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;
375#if __GNUC__ >= 4 519 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
377# 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
378#else 526#else
379# define expect(expr,value) (expr) 527 #include <inttypes.h>
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# 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)))
384#endif 542 #endif
543#endif
385 544
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. */
386#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#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
388#define inline_size static inline 960#define inline_size ecb_inline
389 961
390#if EV_MINIMAL 962#if EV_FEATURE_CODE
963# define inline_speed ecb_inline
964#else
391# define inline_speed static noinline 965# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 966#endif
395 967
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 969
398#if EV_MINPRI == EV_MAXPRI 970#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 983#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 984#define ev_at(w) ((WT)(w))->at
413 985
414#if EV_USE_REALTIME 986#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 987/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 988/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 989static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 990#endif
419 991
420#if EV_USE_MONOTONIC 992#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 993static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 994#endif
423 995
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)
1004#endif
1005
424#ifdef _WIN32 1006#ifdef _WIN32
425# include "ev_win32.c" 1007# include "ev_win32.c"
426#endif 1008#endif
427 1009
428/*****************************************************************************/ 1010/*****************************************************************************/
429 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
430static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg);
431 1111
432void 1112void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg))
434{ 1114{
435 syserr_cb = cb; 1115 syserr_cb = cb;
436} 1116}
437 1117
438static void noinline 1118static void noinline ecb_cold
439ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
440{ 1120{
441 if (!msg) 1121 if (!msg)
442 msg = "(libev) system error"; 1122 msg = "(libev) system error";
443 1123
444 if (syserr_cb) 1124 if (syserr_cb)
445 syserr_cb (msg); 1125 syserr_cb (msg);
446 else 1126 else
447 { 1127 {
1128#if EV_AVOID_STDIO
1129 ev_printerr (msg);
1130 ev_printerr (": ");
1131 ev_printerr (strerror (errno));
1132 ev_printerr ("\n");
1133#else
448 perror (msg); 1134 perror (msg);
1135#endif
449 abort (); 1136 abort ();
450 } 1137 }
451} 1138}
452 1139
453static void * 1140static void *
454ev_realloc_emul (void *ptr, long size) 1141ev_realloc_emul (void *ptr, long size)
455{ 1142{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
456 /* some systems, notably openbsd and darwin, fail to properly 1146 /* some systems, notably openbsd and darwin, fail to properly
457 * 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
458 * the single unix specification, so work around them here. 1148 * the single unix specification, so work around them here.
459 */ 1149 */
460 1150
461 if (size) 1151 if (size)
462 return realloc (ptr, size); 1152 return realloc (ptr, size);
463 1153
464 free (ptr); 1154 free (ptr);
465 return 0; 1155 return 0;
1156#endif
466} 1157}
467 1158
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
469 1160
470void 1161void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size))
472{ 1163{
473 alloc = cb; 1164 alloc = cb;
474} 1165}
475 1166
… …
478{ 1169{
479 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
480 1171
481 if (!ptr && size) 1172 if (!ptr && size)
482 { 1173 {
1174#if EV_AVOID_STDIO
1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1176#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1178#endif
484 abort (); 1179 abort ();
485 } 1180 }
486 1181
487 return ptr; 1182 return ptr;
488} 1183}
… …
504 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1199 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
505 unsigned char unused; 1200 unsigned char unused;
506#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1202 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1203#endif
509#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1205 SOCKET handle;
1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
511#endif 1209#endif
512} ANFD; 1210} ANFD;
513 1211
514/* stores the pending event set for a given watcher */ 1212/* stores the pending event set for a given watcher */
515typedef struct 1213typedef struct
… …
557 #undef VAR 1255 #undef VAR
558 }; 1256 };
559 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
560 1258
561 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
562 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 */
563 1261
564#else 1262#else
565 1263
566 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 */
567 #define VAR(name,decl) static decl; 1265 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1266 #include "ev_vars.h"
569 #undef VAR 1267 #undef VAR
570 1268
571 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
572 1270
573#endif 1271#endif
574 1272
575#if EV_MINIMAL < 2 1273#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1274# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1275# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 1276# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 1277#else
580# define EV_RELEASE_CB (void)0 1278# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 1279# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 1281#endif
584 1282
585#define EVUNLOOP_RECURSE 0x80 1283#define EVBREAK_RECURSE 0x80
586 1284
587/*****************************************************************************/ 1285/*****************************************************************************/
588 1286
589#ifndef EV_HAVE_EV_TIME 1287#ifndef EV_HAVE_EV_TIME
590ev_tstamp 1288ev_tstamp
… …
634 if (delay > 0.) 1332 if (delay > 0.)
635 { 1333 {
636#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
637 struct timespec ts; 1335 struct timespec ts;
638 1336
639 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
643#elif defined(_WIN32) 1339#elif defined _WIN32
644 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
645#else 1341#else
646 struct timeval tv; 1342 struct timeval tv;
647 1343
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650
651 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* something not guaranteed by newer posix versions, but guaranteed */ 1345 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
655#endif 1349#endif
656 } 1350 }
657} 1351}
658 1352
659/*****************************************************************************/ 1353/*****************************************************************************/
660 1354
661#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 */
662 1356
663/* find a suitable new size for the given array, */ 1357/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 1358/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 1359inline_size int
666array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
667{ 1361{
668 int ncur = cur + 1; 1362 int ncur = cur + 1;
669 1363
670 do 1364 do
671 ncur <<= 1; 1365 ncur <<= 1;
672 while (cnt > ncur); 1366 while (cnt > ncur);
673 1367
674 /* 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 */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 1370 {
677 ncur *= elem; 1371 ncur *= elem;
678 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);
679 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
681 } 1375 }
682 1376
683 return ncur; 1377 return ncur;
684} 1378}
685 1379
686static noinline void * 1380static void * noinline ecb_cold
687array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
688{ 1382{
689 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
691} 1385}
… …
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
695 1389
696#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
698 { \ 1392 { \
699 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
703 } 1397 }
704 1398
… …
765} 1459}
766 1460
767/*****************************************************************************/ 1461/*****************************************************************************/
768 1462
769inline_speed void 1463inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 1464fd_event_nocheck (EV_P_ int fd, int revents)
771{ 1465{
772 ANFD *anfd = anfds + fd; 1466 ANFD *anfd = anfds + fd;
773 ev_io *w; 1467 ev_io *w;
774 1468
775 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1469 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
787fd_event (EV_P_ int fd, int revents) 1481fd_event (EV_P_ int fd, int revents)
788{ 1482{
789 ANFD *anfd = anfds + fd; 1483 ANFD *anfd = anfds + fd;
790 1484
791 if (expect_true (!anfd->reify)) 1485 if (expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 1486 fd_event_nocheck (EV_A_ fd, revents);
793} 1487}
794 1488
795void 1489void
796ev_feed_fd_event (EV_P_ int fd, int revents) 1490ev_feed_fd_event (EV_P_ int fd, int revents)
797{ 1491{
798 if (fd >= 0 && fd < anfdmax) 1492 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 1493 fd_event_nocheck (EV_A_ fd, revents);
800} 1494}
801 1495
802/* make sure the external fd watch events are in-sync */ 1496/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 1497/* with the kernel/libev internal state */
804inline_size void 1498inline_size void
805fd_reify (EV_P) 1499fd_reify (EV_P)
806{ 1500{
807 int i; 1501 int i;
808 1502
1503#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1504 for (i = 0; i < fdchangecnt; ++i)
1505 {
1506 int fd = fdchanges [i];
1507 ANFD *anfd = anfds + fd;
1508
1509 if (anfd->reify & EV__IOFDSET && anfd->head)
1510 {
1511 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1512
1513 if (handle != anfd->handle)
1514 {
1515 unsigned long arg;
1516
1517 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1518
1519 /* handle changed, but fd didn't - we need to do it in two steps */
1520 backend_modify (EV_A_ fd, anfd->events, 0);
1521 anfd->events = 0;
1522 anfd->handle = handle;
1523 }
1524 }
1525 }
1526#endif
1527
809 for (i = 0; i < fdchangecnt; ++i) 1528 for (i = 0; i < fdchangecnt; ++i)
810 { 1529 {
811 int fd = fdchanges [i]; 1530 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 1531 ANFD *anfd = anfds + fd;
813 ev_io *w; 1532 ev_io *w;
814 1533
815 unsigned char events = 0; 1534 unsigned char o_events = anfd->events;
1535 unsigned char o_reify = anfd->reify;
816 1536
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1537 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 1538
820#if EV_SELECT_IS_WINSOCKET 1539 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 1540 {
823 unsigned long arg; 1541 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 1542
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1543 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 1544 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 1545
828 #endif 1546 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1547 o_reify = EV__IOFDSET; /* actually |= */
830 } 1548 }
831#endif
832 1549
833 { 1550 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 1551 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 1552 }
844 1553
845 fdchangecnt = 0; 1554 fdchangecnt = 0;
846} 1555}
847 1556
… …
859 fdchanges [fdchangecnt - 1] = fd; 1568 fdchanges [fdchangecnt - 1] = fd;
860 } 1569 }
861} 1570}
862 1571
863/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1572/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
864inline_speed void 1573inline_speed void ecb_cold
865fd_kill (EV_P_ int fd) 1574fd_kill (EV_P_ int fd)
866{ 1575{
867 ev_io *w; 1576 ev_io *w;
868 1577
869 while ((w = (ev_io *)anfds [fd].head)) 1578 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 1580 ev_io_stop (EV_A_ w);
872 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1581 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
873 } 1582 }
874} 1583}
875 1584
876/* check whether the given fd is atcually valid, for error recovery */ 1585/* check whether the given fd is actually valid, for error recovery */
877inline_size int 1586inline_size int ecb_cold
878fd_valid (int fd) 1587fd_valid (int fd)
879{ 1588{
880#ifdef _WIN32 1589#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 1590 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 1591#else
883 return fcntl (fd, F_GETFD) != -1; 1592 return fcntl (fd, F_GETFD) != -1;
884#endif 1593#endif
885} 1594}
886 1595
887/* called on EBADF to verify fds */ 1596/* called on EBADF to verify fds */
888static void noinline 1597static void noinline ecb_cold
889fd_ebadf (EV_P) 1598fd_ebadf (EV_P)
890{ 1599{
891 int fd; 1600 int fd;
892 1601
893 for (fd = 0; fd < anfdmax; ++fd) 1602 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 1604 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 1605 fd_kill (EV_A_ fd);
897} 1606}
898 1607
899/* called on ENOMEM in select/poll to kill some fds and retry */ 1608/* called on ENOMEM in select/poll to kill some fds and retry */
900static void noinline 1609static void noinline ecb_cold
901fd_enomem (EV_P) 1610fd_enomem (EV_P)
902{ 1611{
903 int fd; 1612 int fd;
904 1613
905 for (fd = anfdmax; fd--; ) 1614 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 1615 if (anfds [fd].events)
907 { 1616 {
908 fd_kill (EV_A_ fd); 1617 fd_kill (EV_A_ fd);
909 return; 1618 break;
910 } 1619 }
911} 1620}
912 1621
913/* usually called after fork if backend needs to re-arm all fds from scratch */ 1622/* usually called after fork if backend needs to re-arm all fds from scratch */
914static void noinline 1623static void noinline
… …
923 anfds [fd].emask = 0; 1632 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1633 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 1634 }
926} 1635}
927 1636
1637/* used to prepare libev internal fd's */
1638/* this is not fork-safe */
1639inline_speed void
1640fd_intern (int fd)
1641{
1642#ifdef _WIN32
1643 unsigned long arg = 1;
1644 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1645#else
1646 fcntl (fd, F_SETFD, FD_CLOEXEC);
1647 fcntl (fd, F_SETFL, O_NONBLOCK);
1648#endif
1649}
1650
928/*****************************************************************************/ 1651/*****************************************************************************/
929 1652
930/* 1653/*
931 * the heap functions want a real array index. array index 0 uis guaranteed to not 1654 * the heap functions want a real array index. array index 0 is guaranteed to not
932 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1655 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
933 * the branching factor of the d-tree. 1656 * the branching factor of the d-tree.
934 */ 1657 */
935 1658
936/* 1659/*
… …
1004 1727
1005 for (;;) 1728 for (;;)
1006 { 1729 {
1007 int c = k << 1; 1730 int c = k << 1;
1008 1731
1009 if (c > N + HEAP0 - 1) 1732 if (c >= N + HEAP0)
1010 break; 1733 break;
1011 1734
1012 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1735 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013 ? 1 : 0; 1736 ? 1 : 0;
1014 1737
… …
1050 1773
1051/* move an element suitably so it is in a correct place */ 1774/* move an element suitably so it is in a correct place */
1052inline_size void 1775inline_size void
1053adjustheap (ANHE *heap, int N, int k) 1776adjustheap (ANHE *heap, int N, int k)
1054{ 1777{
1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1778 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056 upheap (heap, k); 1779 upheap (heap, k);
1057 else 1780 else
1058 downheap (heap, N, k); 1781 downheap (heap, N, k);
1059} 1782}
1060 1783
… …
1073/*****************************************************************************/ 1796/*****************************************************************************/
1074 1797
1075/* associate signal watchers to a signal signal */ 1798/* associate signal watchers to a signal signal */
1076typedef struct 1799typedef struct
1077{ 1800{
1801 EV_ATOMIC_T pending;
1802#if EV_MULTIPLICITY
1803 EV_P;
1804#endif
1078 WL head; 1805 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 1806} ANSIG;
1081 1807
1082static ANSIG *signals; 1808static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 1809
1087/*****************************************************************************/ 1810/*****************************************************************************/
1088 1811
1089/* used to prepare libev internal fd's */ 1812#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* this is not fork-safe */
1091inline_speed void
1092fd_intern (int fd)
1093{
1094#ifdef _WIN32
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 1813
1103static void noinline 1814static void noinline ecb_cold
1104evpipe_init (EV_P) 1815evpipe_init (EV_P)
1105{ 1816{
1106 if (!ev_is_active (&pipe_w)) 1817 if (!ev_is_active (&pipe_w))
1107 { 1818 {
1108#if EV_USE_EVENTFD 1819# if EV_USE_EVENTFD
1820 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1821 if (evfd < 0 && errno == EINVAL)
1109 if ((evfd = eventfd (0, 0)) >= 0) 1822 evfd = eventfd (0, 0);
1823
1824 if (evfd >= 0)
1110 { 1825 {
1111 evpipe [0] = -1; 1826 evpipe [0] = -1;
1112 fd_intern (evfd); 1827 fd_intern (evfd); /* doing it twice doesn't hurt */
1113 ev_io_set (&pipe_w, evfd, EV_READ); 1828 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 1829 }
1115 else 1830 else
1116#endif 1831# endif
1117 { 1832 {
1118 while (pipe (evpipe)) 1833 while (pipe (evpipe))
1119 ev_syserr ("(libev) error creating signal/async pipe"); 1834 ev_syserr ("(libev) error creating signal/async pipe");
1120 1835
1121 fd_intern (evpipe [0]); 1836 fd_intern (evpipe [0]);
… …
1126 ev_io_start (EV_A_ &pipe_w); 1841 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */ 1842 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 } 1843 }
1129} 1844}
1130 1845
1131inline_size void 1846inline_speed void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1847evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{ 1848{
1134 if (!*flag) 1849 if (expect_true (*flag))
1850 return;
1851
1852 *flag = 1;
1853
1854 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1855
1856 pipe_write_skipped = 1;
1857
1858 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1859
1860 if (pipe_write_wanted)
1135 { 1861 {
1862 int old_errno;
1863
1864 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1865
1136 int old_errno = errno; /* save errno because write might clobber it */ 1866 old_errno = errno; /* save errno because write will clobber it */
1137
1138 *flag = 1;
1139 1867
1140#if EV_USE_EVENTFD 1868#if EV_USE_EVENTFD
1141 if (evfd >= 0) 1869 if (evfd >= 0)
1142 { 1870 {
1143 uint64_t counter = 1; 1871 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t)); 1872 write (evfd, &counter, sizeof (uint64_t));
1145 } 1873 }
1146 else 1874 else
1147#endif 1875#endif
1876 {
1877 /* win32 people keep sending patches that change this write() to send() */
1878 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1879 /* so when you think this write should be a send instead, please find out */
1880 /* where your send() is from - it's definitely not the microsoft send, and */
1881 /* tell me. thank you. */
1882 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1883 /* check the ev documentation on how to use this flag */
1148 write (evpipe [1], &old_errno, 1); 1884 write (evpipe [1], &(evpipe [1]), 1);
1885 }
1149 1886
1150 errno = old_errno; 1887 errno = old_errno;
1151 } 1888 }
1152} 1889}
1153 1890
1154/* called whenever the libev signal pipe */ 1891/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 1892/* got some events (signal, async) */
1156static void 1893static void
1157pipecb (EV_P_ ev_io *iow, int revents) 1894pipecb (EV_P_ ev_io *iow, int revents)
1158{ 1895{
1896 int i;
1897
1898 if (revents & EV_READ)
1899 {
1159#if EV_USE_EVENTFD 1900#if EV_USE_EVENTFD
1160 if (evfd >= 0) 1901 if (evfd >= 0)
1161 { 1902 {
1162 uint64_t counter; 1903 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 1904 read (evfd, &counter, sizeof (uint64_t));
1164 } 1905 }
1165 else 1906 else
1166#endif 1907#endif
1167 { 1908 {
1168 char dummy; 1909 char dummy;
1910 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1169 read (evpipe [0], &dummy, 1); 1911 read (evpipe [0], &dummy, 1);
1912 }
1913 }
1914
1915 pipe_write_skipped = 0;
1916
1917#if EV_SIGNAL_ENABLE
1918 if (sig_pending)
1170 } 1919 {
1920 sig_pending = 0;
1171 1921
1172 if (gotsig && ev_is_default_loop (EV_A)) 1922 for (i = EV_NSIG - 1; i--; )
1173 { 1923 if (expect_false (signals [i].pending))
1174 int signum;
1175 gotsig = 0;
1176
1177 for (signum = signalmax; signum--; )
1178 if (signals [signum].gotsig)
1179 ev_feed_signal_event (EV_A_ signum + 1); 1924 ev_feed_signal_event (EV_A_ i + 1);
1180 } 1925 }
1926#endif
1181 1927
1182#if EV_ASYNC_ENABLE 1928#if EV_ASYNC_ENABLE
1183 if (gotasync) 1929 if (async_pending)
1184 { 1930 {
1185 int i; 1931 async_pending = 0;
1186 gotasync = 0;
1187 1932
1188 for (i = asynccnt; i--; ) 1933 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 1934 if (asyncs [i]->sent)
1190 { 1935 {
1191 asyncs [i]->sent = 0; 1936 asyncs [i]->sent = 0;
… …
1195#endif 1940#endif
1196} 1941}
1197 1942
1198/*****************************************************************************/ 1943/*****************************************************************************/
1199 1944
1945void
1946ev_feed_signal (int signum)
1947{
1948#if EV_MULTIPLICITY
1949 EV_P = signals [signum - 1].loop;
1950
1951 if (!EV_A)
1952 return;
1953#endif
1954
1955 if (!ev_active (&pipe_w))
1956 return;
1957
1958 signals [signum - 1].pending = 1;
1959 evpipe_write (EV_A_ &sig_pending);
1960}
1961
1200static void 1962static void
1201ev_sighandler (int signum) 1963ev_sighandler (int signum)
1202{ 1964{
1203#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct;
1205#endif
1206
1207#if _WIN32 1965#ifdef _WIN32
1208 signal (signum, ev_sighandler); 1966 signal (signum, ev_sighandler);
1209#endif 1967#endif
1210 1968
1211 signals [signum - 1].gotsig = 1; 1969 ev_feed_signal (signum);
1212 evpipe_write (EV_A_ &gotsig);
1213} 1970}
1214 1971
1215void noinline 1972void noinline
1216ev_feed_signal_event (EV_P_ int signum) 1973ev_feed_signal_event (EV_P_ int signum)
1217{ 1974{
1218 WL w; 1975 WL w;
1219 1976
1977 if (expect_false (signum <= 0 || signum > EV_NSIG))
1978 return;
1979
1980 --signum;
1981
1220#if EV_MULTIPLICITY 1982#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1983 /* it is permissible to try to feed a signal to the wrong loop */
1222#endif 1984 /* or, likely more useful, feeding a signal nobody is waiting for */
1223 1985
1224 --signum; 1986 if (expect_false (signals [signum].loop != EV_A))
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 1987 return;
1988#endif
1228 1989
1229 signals [signum].gotsig = 0; 1990 signals [signum].pending = 0;
1230 1991
1231 for (w = signals [signum].head; w; w = w->next) 1992 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1993 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 1994}
1234 1995
1996#if EV_USE_SIGNALFD
1997static void
1998sigfdcb (EV_P_ ev_io *iow, int revents)
1999{
2000 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2001
2002 for (;;)
2003 {
2004 ssize_t res = read (sigfd, si, sizeof (si));
2005
2006 /* not ISO-C, as res might be -1, but works with SuS */
2007 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2008 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2009
2010 if (res < (ssize_t)sizeof (si))
2011 break;
2012 }
2013}
2014#endif
2015
2016#endif
2017
1235/*****************************************************************************/ 2018/*****************************************************************************/
1236 2019
2020#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 2021static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 2022
1241static ev_signal childev; 2023static ev_signal childev;
1242 2024
1243#ifndef WIFCONTINUED 2025#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 2026# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 2031child_reap (EV_P_ int chain, int pid, int status)
1250{ 2032{
1251 ev_child *w; 2033 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2034 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 2035
1254 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2036 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1255 { 2037 {
1256 if ((w->pid == pid || !w->pid) 2038 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 2039 && (!traced || (w->flags & 1)))
1258 { 2040 {
1259 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2041 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1284 /* make sure we are called again until all children have been reaped */ 2066 /* make sure we are called again until all children have been reaped */
1285 /* we need to do it this way so that the callback gets called before we continue */ 2067 /* we need to do it this way so that the callback gets called before we continue */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2068 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2069
1288 child_reap (EV_A_ pid, pid, status); 2070 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2071 if ((EV_PID_HASHSIZE) > 1)
1290 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2072 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1291} 2073}
1292 2074
1293#endif 2075#endif
1294 2076
1295/*****************************************************************************/ 2077/*****************************************************************************/
1296 2078
2079#if EV_USE_IOCP
2080# include "ev_iocp.c"
2081#endif
1297#if EV_USE_PORT 2082#if EV_USE_PORT
1298# include "ev_port.c" 2083# include "ev_port.c"
1299#endif 2084#endif
1300#if EV_USE_KQUEUE 2085#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2086# include "ev_kqueue.c"
… …
1308#endif 2093#endif
1309#if EV_USE_SELECT 2094#if EV_USE_SELECT
1310# include "ev_select.c" 2095# include "ev_select.c"
1311#endif 2096#endif
1312 2097
1313int 2098int ecb_cold
1314ev_version_major (void) 2099ev_version_major (void)
1315{ 2100{
1316 return EV_VERSION_MAJOR; 2101 return EV_VERSION_MAJOR;
1317} 2102}
1318 2103
1319int 2104int ecb_cold
1320ev_version_minor (void) 2105ev_version_minor (void)
1321{ 2106{
1322 return EV_VERSION_MINOR; 2107 return EV_VERSION_MINOR;
1323} 2108}
1324 2109
1325/* return true if we are running with elevated privileges and should ignore env variables */ 2110/* return true if we are running with elevated privileges and should ignore env variables */
1326int inline_size 2111int inline_size ecb_cold
1327enable_secure (void) 2112enable_secure (void)
1328{ 2113{
1329#ifdef _WIN32 2114#ifdef _WIN32
1330 return 0; 2115 return 0;
1331#else 2116#else
1332 return getuid () != geteuid () 2117 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2118 || getgid () != getegid ();
1334#endif 2119#endif
1335} 2120}
1336 2121
1337unsigned int 2122unsigned int ecb_cold
1338ev_supported_backends (void) 2123ev_supported_backends (void)
1339{ 2124{
1340 unsigned int flags = 0; 2125 unsigned int flags = 0;
1341 2126
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2127 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2131 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1347 2132
1348 return flags; 2133 return flags;
1349} 2134}
1350 2135
1351unsigned int 2136unsigned int ecb_cold
1352ev_recommended_backends (void) 2137ev_recommended_backends (void)
1353{ 2138{
1354 unsigned int flags = ev_supported_backends (); 2139 unsigned int flags = ev_supported_backends ();
1355 2140
1356#ifndef __NetBSD__ 2141#ifndef __NetBSD__
… …
1361#ifdef __APPLE__ 2146#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2147 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2148 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2149 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1365#endif 2150#endif
2151#ifdef __FreeBSD__
2152 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2153#endif
1366 2154
1367 return flags; 2155 return flags;
1368} 2156}
1369 2157
1370unsigned int 2158unsigned int ecb_cold
1371ev_embeddable_backends (void) 2159ev_embeddable_backends (void)
1372{ 2160{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2161 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1374 2162
1375 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2163 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1376 /* please fix it and tell me how to detect the fix */ 2164 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1377 flags &= ~EVBACKEND_EPOLL; 2165 flags &= ~EVBACKEND_EPOLL;
1378 2166
1379 return flags; 2167 return flags;
1380} 2168}
1381 2169
1382unsigned int 2170unsigned int
1383ev_backend (EV_P) 2171ev_backend (EV_P)
1384{ 2172{
1385 return backend; 2173 return backend;
1386} 2174}
1387 2175
1388#if EV_MINIMAL < 2 2176#if EV_FEATURE_API
1389unsigned int 2177unsigned int
1390ev_loop_count (EV_P) 2178ev_iteration (EV_P)
1391{ 2179{
1392 return loop_count; 2180 return loop_count;
1393} 2181}
1394 2182
1395unsigned int 2183unsigned int
1396ev_loop_depth (EV_P) 2184ev_depth (EV_P)
1397{ 2185{
1398 return loop_depth; 2186 return loop_depth;
1399} 2187}
1400 2188
1401void 2189void
… …
1420ev_userdata (EV_P) 2208ev_userdata (EV_P)
1421{ 2209{
1422 return userdata; 2210 return userdata;
1423} 2211}
1424 2212
2213void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2214ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1426{ 2215{
1427 invoke_cb = invoke_pending_cb; 2216 invoke_cb = invoke_pending_cb;
1428} 2217}
1429 2218
2219void
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2220ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1431{ 2221{
1432 release_cb = release; 2222 release_cb = release;
1433 acquire_cb = acquire; 2223 acquire_cb = acquire;
1434} 2224}
1435#endif 2225#endif
1436 2226
1437/* initialise a loop structure, must be zero-initialised */ 2227/* initialise a loop structure, must be zero-initialised */
1438static void noinline 2228static void noinline ecb_cold
1439loop_init (EV_P_ unsigned int flags) 2229loop_init (EV_P_ unsigned int flags)
1440{ 2230{
1441 if (!backend) 2231 if (!backend)
1442 { 2232 {
2233 origflags = flags;
2234
1443#if EV_USE_REALTIME 2235#if EV_USE_REALTIME
1444 if (!have_realtime) 2236 if (!have_realtime)
1445 { 2237 {
1446 struct timespec ts; 2238 struct timespec ts;
1447 2239
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2250 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 2251 have_monotonic = 1;
1460 } 2252 }
1461#endif 2253#endif
1462 2254
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 2255 /* pid check not overridable via env */
1481#ifndef _WIN32 2256#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 2257 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 2258 curpid = getpid ();
1484#endif 2259#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 2261 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 2262 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 2263 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 2264 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 2265
1491 if (!(flags & 0x0000ffffU)) 2266 ev_rt_now = ev_time ();
2267 mn_now = get_clock ();
2268 now_floor = mn_now;
2269 rtmn_diff = ev_rt_now - mn_now;
2270#if EV_FEATURE_API
2271 invoke_cb = ev_invoke_pending;
2272#endif
2273
2274 io_blocktime = 0.;
2275 timeout_blocktime = 0.;
2276 backend = 0;
2277 backend_fd = -1;
2278 sig_pending = 0;
2279#if EV_ASYNC_ENABLE
2280 async_pending = 0;
2281#endif
2282 pipe_write_skipped = 0;
2283 pipe_write_wanted = 0;
2284#if EV_USE_INOTIFY
2285 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2286#endif
2287#if EV_USE_SIGNALFD
2288 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2289#endif
2290
2291 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 2292 flags |= ev_recommended_backends ();
1493 2293
2294#if EV_USE_IOCP
2295 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2296#endif
1494#if EV_USE_PORT 2297#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2298 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 2299#endif
1497#if EV_USE_KQUEUE 2300#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2301 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2310 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1508#endif 2311#endif
1509 2312
1510 ev_prepare_init (&pending_w, pendingcb); 2313 ev_prepare_init (&pending_w, pendingcb);
1511 2314
2315#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 2316 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 2317 ev_set_priority (&pipe_w, EV_MAXPRI);
2318#endif
1514 } 2319 }
1515} 2320}
1516 2321
1517/* free up a loop structure */ 2322/* free up a loop structure */
1518static void noinline 2323void ecb_cold
1519loop_destroy (EV_P) 2324ev_loop_destroy (EV_P)
1520{ 2325{
1521 int i; 2326 int i;
1522 2327
2328#if EV_MULTIPLICITY
2329 /* mimic free (0) */
2330 if (!EV_A)
2331 return;
2332#endif
2333
2334#if EV_CLEANUP_ENABLE
2335 /* queue cleanup watchers (and execute them) */
2336 if (expect_false (cleanupcnt))
2337 {
2338 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2339 EV_INVOKE_PENDING;
2340 }
2341#endif
2342
2343#if EV_CHILD_ENABLE
2344 if (ev_is_active (&childev))
2345 {
2346 ev_ref (EV_A); /* child watcher */
2347 ev_signal_stop (EV_A_ &childev);
2348 }
2349#endif
2350
1523 if (ev_is_active (&pipe_w)) 2351 if (ev_is_active (&pipe_w))
1524 { 2352 {
1525 ev_ref (EV_A); /* signal watcher */ 2353 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 2354 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 2355
1528#if EV_USE_EVENTFD 2356#if EV_USE_EVENTFD
1529 if (evfd >= 0) 2357 if (evfd >= 0)
1530 close (evfd); 2358 close (evfd);
1531#endif 2359#endif
1532 2360
1533 if (evpipe [0] >= 0) 2361 if (evpipe [0] >= 0)
1534 { 2362 {
1535 close (evpipe [0]); 2363 EV_WIN32_CLOSE_FD (evpipe [0]);
1536 close (evpipe [1]); 2364 EV_WIN32_CLOSE_FD (evpipe [1]);
1537 } 2365 }
1538 } 2366 }
2367
2368#if EV_USE_SIGNALFD
2369 if (ev_is_active (&sigfd_w))
2370 close (sigfd);
2371#endif
1539 2372
1540#if EV_USE_INOTIFY 2373#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 2374 if (fs_fd >= 0)
1542 close (fs_fd); 2375 close (fs_fd);
1543#endif 2376#endif
1544 2377
1545 if (backend_fd >= 0) 2378 if (backend_fd >= 0)
1546 close (backend_fd); 2379 close (backend_fd);
1547 2380
2381#if EV_USE_IOCP
2382 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2383#endif
1548#if EV_USE_PORT 2384#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2385 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 2386#endif
1551#if EV_USE_KQUEUE 2387#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2388 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1567#if EV_IDLE_ENABLE 2403#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 2404 array_free (idle, [i]);
1569#endif 2405#endif
1570 } 2406 }
1571 2407
1572 ev_free (anfds); anfdmax = 0; 2408 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 2409
1574 /* have to use the microsoft-never-gets-it-right macro */ 2410 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 2411 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 2412 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 2413 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 2415 array_free (periodic, EMPTY);
1580#endif 2416#endif
1581#if EV_FORK_ENABLE 2417#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 2418 array_free (fork, EMPTY);
1583#endif 2419#endif
2420#if EV_CLEANUP_ENABLE
2421 array_free (cleanup, EMPTY);
2422#endif
1584 array_free (prepare, EMPTY); 2423 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 2424 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 2425#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 2426 array_free (async, EMPTY);
1588#endif 2427#endif
1589 2428
1590 backend = 0; 2429 backend = 0;
2430
2431#if EV_MULTIPLICITY
2432 if (ev_is_default_loop (EV_A))
2433#endif
2434 ev_default_loop_ptr = 0;
2435#if EV_MULTIPLICITY
2436 else
2437 ev_free (EV_A);
2438#endif
1591} 2439}
1592 2440
1593#if EV_USE_INOTIFY 2441#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 2442inline_size void infy_fork (EV_P);
1595#endif 2443#endif
… …
1610 infy_fork (EV_A); 2458 infy_fork (EV_A);
1611#endif 2459#endif
1612 2460
1613 if (ev_is_active (&pipe_w)) 2461 if (ev_is_active (&pipe_w))
1614 { 2462 {
1615 /* this "locks" the handlers against writing to the pipe */ 2463 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 2464
1622 ev_ref (EV_A); 2465 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 2466 ev_io_stop (EV_A_ &pipe_w);
1624 2467
1625#if EV_USE_EVENTFD 2468#if EV_USE_EVENTFD
… …
1627 close (evfd); 2470 close (evfd);
1628#endif 2471#endif
1629 2472
1630 if (evpipe [0] >= 0) 2473 if (evpipe [0] >= 0)
1631 { 2474 {
1632 close (evpipe [0]); 2475 EV_WIN32_CLOSE_FD (evpipe [0]);
1633 close (evpipe [1]); 2476 EV_WIN32_CLOSE_FD (evpipe [1]);
1634 } 2477 }
1635 2478
2479#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1636 evpipe_init (EV_A); 2480 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 2481 /* now iterate over everything, in case we missed something */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 2482 pipecb (EV_A_ &pipe_w, EV_READ);
2483#endif
1639 } 2484 }
1640 2485
1641 postfork = 0; 2486 postfork = 0;
1642} 2487}
1643 2488
1644#if EV_MULTIPLICITY 2489#if EV_MULTIPLICITY
1645 2490
1646struct ev_loop * 2491struct ev_loop * ecb_cold
1647ev_loop_new (unsigned int flags) 2492ev_loop_new (unsigned int flags)
1648{ 2493{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2494 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 2495
1651 memset (loop, 0, sizeof (struct ev_loop)); 2496 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 2497 loop_init (EV_A_ flags);
1654 2498
1655 if (ev_backend (EV_A)) 2499 if (ev_backend (EV_A))
1656 return loop; 2500 return EV_A;
1657 2501
2502 ev_free (EV_A);
1658 return 0; 2503 return 0;
1659} 2504}
1660 2505
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 2506#endif /* multiplicity */
1674 2507
1675#if EV_VERIFY 2508#if EV_VERIFY
1676static void noinline 2509static void noinline ecb_cold
1677verify_watcher (EV_P_ W w) 2510verify_watcher (EV_P_ W w)
1678{ 2511{
1679 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2512 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1680 2513
1681 if (w->pending) 2514 if (w->pending)
1682 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2515 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1683} 2516}
1684 2517
1685static void noinline 2518static void noinline ecb_cold
1686verify_heap (EV_P_ ANHE *heap, int N) 2519verify_heap (EV_P_ ANHE *heap, int N)
1687{ 2520{
1688 int i; 2521 int i;
1689 2522
1690 for (i = HEAP0; i < N + HEAP0; ++i) 2523 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 2528
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2529 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 2530 }
1698} 2531}
1699 2532
1700static void noinline 2533static void noinline ecb_cold
1701array_verify (EV_P_ W *ws, int cnt) 2534array_verify (EV_P_ W *ws, int cnt)
1702{ 2535{
1703 while (cnt--) 2536 while (cnt--)
1704 { 2537 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2538 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 2539 verify_watcher (EV_A_ ws [cnt]);
1707 } 2540 }
1708} 2541}
1709#endif 2542#endif
1710 2543
1711#if EV_MINIMAL < 2 2544#if EV_FEATURE_API
1712void 2545void ecb_cold
1713ev_loop_verify (EV_P) 2546ev_verify (EV_P)
1714{ 2547{
1715#if EV_VERIFY 2548#if EV_VERIFY
1716 int i; 2549 int i;
1717 WL w; 2550 WL w;
1718 2551
… …
1752#if EV_FORK_ENABLE 2585#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 2586 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 2587 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 2588#endif
1756 2589
2590#if EV_CLEANUP_ENABLE
2591 assert (cleanupmax >= cleanupcnt);
2592 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2593#endif
2594
1757#if EV_ASYNC_ENABLE 2595#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 2596 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 2597 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 2598#endif
1761 2599
2600#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 2601 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 2602 array_verify (EV_A_ (W *)prepares, preparecnt);
2603#endif
1764 2604
2605#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 2606 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 2607 array_verify (EV_A_ (W *)checks, checkcnt);
2608#endif
1767 2609
1768# if 0 2610# if 0
2611#if EV_CHILD_ENABLE
1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2612 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2613 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2614#endif
1771# endif 2615# endif
1772#endif 2616#endif
1773} 2617}
1774#endif 2618#endif
1775 2619
1776#if EV_MULTIPLICITY 2620#if EV_MULTIPLICITY
1777struct ev_loop * 2621struct ev_loop * ecb_cold
1778ev_default_loop_init (unsigned int flags)
1779#else 2622#else
1780int 2623int
2624#endif
1781ev_default_loop (unsigned int flags) 2625ev_default_loop (unsigned int flags)
1782#endif
1783{ 2626{
1784 if (!ev_default_loop_ptr) 2627 if (!ev_default_loop_ptr)
1785 { 2628 {
1786#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2630 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 2631#else
1789 ev_default_loop_ptr = 1; 2632 ev_default_loop_ptr = 1;
1790#endif 2633#endif
1791 2634
1792 loop_init (EV_A_ flags); 2635 loop_init (EV_A_ flags);
1793 2636
1794 if (ev_backend (EV_A)) 2637 if (ev_backend (EV_A))
1795 { 2638 {
1796#ifndef _WIN32 2639#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 2640 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 2641 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 2642 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2643 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 2644#endif
… …
1806 2649
1807 return ev_default_loop_ptr; 2650 return ev_default_loop_ptr;
1808} 2651}
1809 2652
1810void 2653void
1811ev_default_destroy (void) 2654ev_loop_fork (EV_P)
1812{ 2655{
1813#if EV_MULTIPLICITY
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */ 2656 postfork = 1; /* must be in line with ev_default_fork */
1835} 2657}
1836 2658
1837/*****************************************************************************/ 2659/*****************************************************************************/
1838 2660
1839void 2661void
… …
1861 2683
1862 for (pri = NUMPRI; pri--; ) 2684 for (pri = NUMPRI; pri--; )
1863 while (pendingcnt [pri]) 2685 while (pendingcnt [pri])
1864 { 2686 {
1865 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2687 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1866
1867 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1868 /* ^ this is no longer true, as pending_w could be here */
1869 2688
1870 p->w->pending = 0; 2689 p->w->pending = 0;
1871 EV_CB_INVOKE (p->w, p->events); 2690 EV_CB_INVOKE (p->w, p->events);
1872 EV_FREQUENT_CHECK; 2691 EV_FREQUENT_CHECK;
1873 } 2692 }
… …
1930 EV_FREQUENT_CHECK; 2749 EV_FREQUENT_CHECK;
1931 feed_reverse (EV_A_ (W)w); 2750 feed_reverse (EV_A_ (W)w);
1932 } 2751 }
1933 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2752 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1934 2753
1935 feed_reverse_done (EV_A_ EV_TIMEOUT); 2754 feed_reverse_done (EV_A_ EV_TIMER);
1936 } 2755 }
1937} 2756}
1938 2757
1939#if EV_PERIODIC_ENABLE 2758#if EV_PERIODIC_ENABLE
2759
2760static void noinline
2761periodic_recalc (EV_P_ ev_periodic *w)
2762{
2763 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2764 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2765
2766 /* the above almost always errs on the low side */
2767 while (at <= ev_rt_now)
2768 {
2769 ev_tstamp nat = at + w->interval;
2770
2771 /* when resolution fails us, we use ev_rt_now */
2772 if (expect_false (nat == at))
2773 {
2774 at = ev_rt_now;
2775 break;
2776 }
2777
2778 at = nat;
2779 }
2780
2781 ev_at (w) = at;
2782}
2783
1940/* make periodics pending */ 2784/* make periodics pending */
1941inline_size void 2785inline_size void
1942periodics_reify (EV_P) 2786periodics_reify (EV_P)
1943{ 2787{
1944 EV_FREQUENT_CHECK; 2788 EV_FREQUENT_CHECK;
… …
1963 ANHE_at_cache (periodics [HEAP0]); 2807 ANHE_at_cache (periodics [HEAP0]);
1964 downheap (periodics, periodiccnt, HEAP0); 2808 downheap (periodics, periodiccnt, HEAP0);
1965 } 2809 }
1966 else if (w->interval) 2810 else if (w->interval)
1967 { 2811 {
1968 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2812 periodic_recalc (EV_A_ w);
1969 /* if next trigger time is not sufficiently in the future, put it there */
1970 /* this might happen because of floating point inexactness */
1971 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1972 {
1973 ev_at (w) += w->interval;
1974
1975 /* if interval is unreasonably low we might still have a time in the past */
1976 /* so correct this. this will make the periodic very inexact, but the user */
1977 /* has effectively asked to get triggered more often than possible */
1978 if (ev_at (w) < ev_rt_now)
1979 ev_at (w) = ev_rt_now;
1980 }
1981
1982 ANHE_at_cache (periodics [HEAP0]); 2813 ANHE_at_cache (periodics [HEAP0]);
1983 downheap (periodics, periodiccnt, HEAP0); 2814 downheap (periodics, periodiccnt, HEAP0);
1984 } 2815 }
1985 else 2816 else
1986 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2817 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1993 feed_reverse_done (EV_A_ EV_PERIODIC); 2824 feed_reverse_done (EV_A_ EV_PERIODIC);
1994 } 2825 }
1995} 2826}
1996 2827
1997/* simply recalculate all periodics */ 2828/* simply recalculate all periodics */
1998/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2829/* TODO: maybe ensure that at least one event happens when jumping forward? */
1999static void noinline 2830static void noinline ecb_cold
2000periodics_reschedule (EV_P) 2831periodics_reschedule (EV_P)
2001{ 2832{
2002 int i; 2833 int i;
2003 2834
2004 /* adjust periodics after time jump */ 2835 /* adjust periodics after time jump */
… …
2007 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2838 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2008 2839
2009 if (w->reschedule_cb) 2840 if (w->reschedule_cb)
2010 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2841 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2011 else if (w->interval) 2842 else if (w->interval)
2012 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2843 periodic_recalc (EV_A_ w);
2013 2844
2014 ANHE_at_cache (periodics [i]); 2845 ANHE_at_cache (periodics [i]);
2015 } 2846 }
2016 2847
2017 reheap (periodics, periodiccnt); 2848 reheap (periodics, periodiccnt);
2018} 2849}
2019#endif 2850#endif
2020 2851
2021/* adjust all timers by a given offset */ 2852/* adjust all timers by a given offset */
2022static void noinline 2853static void noinline ecb_cold
2023timers_reschedule (EV_P_ ev_tstamp adjust) 2854timers_reschedule (EV_P_ ev_tstamp adjust)
2024{ 2855{
2025 int i; 2856 int i;
2026 2857
2027 for (i = 0; i < timercnt; ++i) 2858 for (i = 0; i < timercnt; ++i)
… …
2031 ANHE_at_cache (*he); 2862 ANHE_at_cache (*he);
2032 } 2863 }
2033} 2864}
2034 2865
2035/* fetch new monotonic and realtime times from the kernel */ 2866/* fetch new monotonic and realtime times from the kernel */
2036/* also detetc if there was a timejump, and act accordingly */ 2867/* also detect if there was a timejump, and act accordingly */
2037inline_speed void 2868inline_speed void
2038time_update (EV_P_ ev_tstamp max_block) 2869time_update (EV_P_ ev_tstamp max_block)
2039{ 2870{
2040#if EV_USE_MONOTONIC 2871#if EV_USE_MONOTONIC
2041 if (expect_true (have_monotonic)) 2872 if (expect_true (have_monotonic))
… …
2064 * doesn't hurt either as we only do this on time-jumps or 2895 * doesn't hurt either as we only do this on time-jumps or
2065 * in the unlikely event of having been preempted here. 2896 * in the unlikely event of having been preempted here.
2066 */ 2897 */
2067 for (i = 4; --i; ) 2898 for (i = 4; --i; )
2068 { 2899 {
2900 ev_tstamp diff;
2069 rtmn_diff = ev_rt_now - mn_now; 2901 rtmn_diff = ev_rt_now - mn_now;
2070 2902
2903 diff = odiff - rtmn_diff;
2904
2071 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2905 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2072 return; /* all is well */ 2906 return; /* all is well */
2073 2907
2074 ev_rt_now = ev_time (); 2908 ev_rt_now = ev_time ();
2075 mn_now = get_clock (); 2909 mn_now = get_clock ();
2076 now_floor = mn_now; 2910 now_floor = mn_now;
… …
2098 2932
2099 mn_now = ev_rt_now; 2933 mn_now = ev_rt_now;
2100 } 2934 }
2101} 2935}
2102 2936
2103void 2937int
2104ev_loop (EV_P_ int flags) 2938ev_run (EV_P_ int flags)
2105{ 2939{
2106#if EV_MINIMAL < 2 2940#if EV_FEATURE_API
2107 ++loop_depth; 2941 ++loop_depth;
2108#endif 2942#endif
2109 2943
2110 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2944 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2111 2945
2112 loop_done = EVUNLOOP_CANCEL; 2946 loop_done = EVBREAK_CANCEL;
2113 2947
2114 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2948 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2115 2949
2116 do 2950 do
2117 { 2951 {
2118#if EV_VERIFY >= 2 2952#if EV_VERIFY >= 2
2119 ev_loop_verify (EV_A); 2953 ev_verify (EV_A);
2120#endif 2954#endif
2121 2955
2122#ifndef _WIN32 2956#ifndef _WIN32
2123 if (expect_false (curpid)) /* penalise the forking check even more */ 2957 if (expect_false (curpid)) /* penalise the forking check even more */
2124 if (expect_false (getpid () != curpid)) 2958 if (expect_false (getpid () != curpid))
… …
2136 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2970 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2137 EV_INVOKE_PENDING; 2971 EV_INVOKE_PENDING;
2138 } 2972 }
2139#endif 2973#endif
2140 2974
2975#if EV_PREPARE_ENABLE
2141 /* queue prepare watchers (and execute them) */ 2976 /* queue prepare watchers (and execute them) */
2142 if (expect_false (preparecnt)) 2977 if (expect_false (preparecnt))
2143 { 2978 {
2144 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2979 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2145 EV_INVOKE_PENDING; 2980 EV_INVOKE_PENDING;
2146 } 2981 }
2982#endif
2147 2983
2148 if (expect_false (loop_done)) 2984 if (expect_false (loop_done))
2149 break; 2985 break;
2150 2986
2151 /* we might have forked, so reify kernel state if necessary */ 2987 /* we might have forked, so reify kernel state if necessary */
… …
2158 /* calculate blocking time */ 2994 /* calculate blocking time */
2159 { 2995 {
2160 ev_tstamp waittime = 0.; 2996 ev_tstamp waittime = 0.;
2161 ev_tstamp sleeptime = 0.; 2997 ev_tstamp sleeptime = 0.;
2162 2998
2999 /* remember old timestamp for io_blocktime calculation */
3000 ev_tstamp prev_mn_now = mn_now;
3001
3002 /* update time to cancel out callback processing overhead */
3003 time_update (EV_A_ 1e100);
3004
3005 /* from now on, we want a pipe-wake-up */
3006 pipe_write_wanted = 1;
3007
3008 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3009
2163 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3010 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2164 { 3011 {
2165 /* remember old timestamp for io_blocktime calculation */
2166 ev_tstamp prev_mn_now = mn_now;
2167
2168 /* update time to cancel out callback processing overhead */
2169 time_update (EV_A_ 1e100);
2170
2171 waittime = MAX_BLOCKTIME; 3012 waittime = MAX_BLOCKTIME;
2172 3013
2173 if (timercnt) 3014 if (timercnt)
2174 { 3015 {
2175 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3016 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2176 if (waittime > to) waittime = to; 3017 if (waittime > to) waittime = to;
2177 } 3018 }
2178 3019
2179#if EV_PERIODIC_ENABLE 3020#if EV_PERIODIC_ENABLE
2180 if (periodiccnt) 3021 if (periodiccnt)
2181 { 3022 {
2182 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3023 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2183 if (waittime > to) waittime = to; 3024 if (waittime > to) waittime = to;
2184 } 3025 }
2185#endif 3026#endif
2186 3027
2187 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3028 /* don't let timeouts decrease the waittime below timeout_blocktime */
2188 if (expect_false (waittime < timeout_blocktime)) 3029 if (expect_false (waittime < timeout_blocktime))
2189 waittime = timeout_blocktime; 3030 waittime = timeout_blocktime;
3031
3032 /* at this point, we NEED to wait, so we have to ensure */
3033 /* to pass a minimum nonzero value to the backend */
3034 if (expect_false (waittime < backend_mintime))
3035 waittime = backend_mintime;
2190 3036
2191 /* extra check because io_blocktime is commonly 0 */ 3037 /* extra check because io_blocktime is commonly 0 */
2192 if (expect_false (io_blocktime)) 3038 if (expect_false (io_blocktime))
2193 { 3039 {
2194 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3040 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2195 3041
2196 if (sleeptime > waittime - backend_fudge) 3042 if (sleeptime > waittime - backend_mintime)
2197 sleeptime = waittime - backend_fudge; 3043 sleeptime = waittime - backend_mintime;
2198 3044
2199 if (expect_true (sleeptime > 0.)) 3045 if (expect_true (sleeptime > 0.))
2200 { 3046 {
2201 ev_sleep (sleeptime); 3047 ev_sleep (sleeptime);
2202 waittime -= sleeptime; 3048 waittime -= sleeptime;
2203 } 3049 }
2204 } 3050 }
2205 } 3051 }
2206 3052
2207#if EV_MINIMAL < 2 3053#if EV_FEATURE_API
2208 ++loop_count; 3054 ++loop_count;
2209#endif 3055#endif
2210 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3056 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2211 backend_poll (EV_A_ waittime); 3057 backend_poll (EV_A_ waittime);
2212 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3058 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3059
3060 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3061
3062 if (pipe_write_skipped)
3063 {
3064 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3065 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3066 }
3067
2213 3068
2214 /* update ev_rt_now, do magic */ 3069 /* update ev_rt_now, do magic */
2215 time_update (EV_A_ waittime + sleeptime); 3070 time_update (EV_A_ waittime + sleeptime);
2216 } 3071 }
2217 3072
… …
2224#if EV_IDLE_ENABLE 3079#if EV_IDLE_ENABLE
2225 /* queue idle watchers unless other events are pending */ 3080 /* queue idle watchers unless other events are pending */
2226 idle_reify (EV_A); 3081 idle_reify (EV_A);
2227#endif 3082#endif
2228 3083
3084#if EV_CHECK_ENABLE
2229 /* queue check watchers, to be executed first */ 3085 /* queue check watchers, to be executed first */
2230 if (expect_false (checkcnt)) 3086 if (expect_false (checkcnt))
2231 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3087 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3088#endif
2232 3089
2233 EV_INVOKE_PENDING; 3090 EV_INVOKE_PENDING;
2234 } 3091 }
2235 while (expect_true ( 3092 while (expect_true (
2236 activecnt 3093 activecnt
2237 && !loop_done 3094 && !loop_done
2238 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3095 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2239 )); 3096 ));
2240 3097
2241 if (loop_done == EVUNLOOP_ONE) 3098 if (loop_done == EVBREAK_ONE)
2242 loop_done = EVUNLOOP_CANCEL; 3099 loop_done = EVBREAK_CANCEL;
2243 3100
2244#if EV_MINIMAL < 2 3101#if EV_FEATURE_API
2245 --loop_depth; 3102 --loop_depth;
2246#endif 3103#endif
3104
3105 return activecnt;
2247} 3106}
2248 3107
2249void 3108void
2250ev_unloop (EV_P_ int how) 3109ev_break (EV_P_ int how)
2251{ 3110{
2252 loop_done = how; 3111 loop_done = how;
2253} 3112}
2254 3113
2255void 3114void
… …
2302inline_size void 3161inline_size void
2303wlist_del (WL *head, WL elem) 3162wlist_del (WL *head, WL elem)
2304{ 3163{
2305 while (*head) 3164 while (*head)
2306 { 3165 {
2307 if (*head == elem) 3166 if (expect_true (*head == elem))
2308 { 3167 {
2309 *head = elem->next; 3168 *head = elem->next;
2310 return; 3169 break;
2311 } 3170 }
2312 3171
2313 head = &(*head)->next; 3172 head = &(*head)->next;
2314 } 3173 }
2315} 3174}
… …
2375 3234
2376 if (expect_false (ev_is_active (w))) 3235 if (expect_false (ev_is_active (w)))
2377 return; 3236 return;
2378 3237
2379 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3238 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2380 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3239 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2381 3240
2382 EV_FREQUENT_CHECK; 3241 EV_FREQUENT_CHECK;
2383 3242
2384 ev_start (EV_A_ (W)w, 1); 3243 ev_start (EV_A_ (W)w, 1);
2385 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3244 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2403 EV_FREQUENT_CHECK; 3262 EV_FREQUENT_CHECK;
2404 3263
2405 wlist_del (&anfds[w->fd].head, (WL)w); 3264 wlist_del (&anfds[w->fd].head, (WL)w);
2406 ev_stop (EV_A_ (W)w); 3265 ev_stop (EV_A_ (W)w);
2407 3266
2408 fd_change (EV_A_ w->fd, 1); 3267 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2409 3268
2410 EV_FREQUENT_CHECK; 3269 EV_FREQUENT_CHECK;
2411} 3270}
2412 3271
2413void noinline 3272void noinline
… …
2455 timers [active] = timers [timercnt + HEAP0]; 3314 timers [active] = timers [timercnt + HEAP0];
2456 adjustheap (timers, timercnt, active); 3315 adjustheap (timers, timercnt, active);
2457 } 3316 }
2458 } 3317 }
2459 3318
2460 EV_FREQUENT_CHECK;
2461
2462 ev_at (w) -= mn_now; 3319 ev_at (w) -= mn_now;
2463 3320
2464 ev_stop (EV_A_ (W)w); 3321 ev_stop (EV_A_ (W)w);
3322
3323 EV_FREQUENT_CHECK;
2465} 3324}
2466 3325
2467void noinline 3326void noinline
2468ev_timer_again (EV_P_ ev_timer *w) 3327ev_timer_again (EV_P_ ev_timer *w)
2469{ 3328{
2470 EV_FREQUENT_CHECK; 3329 EV_FREQUENT_CHECK;
3330
3331 clear_pending (EV_A_ (W)w);
2471 3332
2472 if (ev_is_active (w)) 3333 if (ev_is_active (w))
2473 { 3334 {
2474 if (w->repeat) 3335 if (w->repeat)
2475 { 3336 {
… …
2505 if (w->reschedule_cb) 3366 if (w->reschedule_cb)
2506 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3367 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2507 else if (w->interval) 3368 else if (w->interval)
2508 { 3369 {
2509 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3370 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2510 /* this formula differs from the one in periodic_reify because we do not always round up */ 3371 periodic_recalc (EV_A_ w);
2511 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2512 } 3372 }
2513 else 3373 else
2514 ev_at (w) = w->offset; 3374 ev_at (w) = w->offset;
2515 3375
2516 EV_FREQUENT_CHECK; 3376 EV_FREQUENT_CHECK;
… …
2548 periodics [active] = periodics [periodiccnt + HEAP0]; 3408 periodics [active] = periodics [periodiccnt + HEAP0];
2549 adjustheap (periodics, periodiccnt, active); 3409 adjustheap (periodics, periodiccnt, active);
2550 } 3410 }
2551 } 3411 }
2552 3412
2553 EV_FREQUENT_CHECK;
2554
2555 ev_stop (EV_A_ (W)w); 3413 ev_stop (EV_A_ (W)w);
3414
3415 EV_FREQUENT_CHECK;
2556} 3416}
2557 3417
2558void noinline 3418void noinline
2559ev_periodic_again (EV_P_ ev_periodic *w) 3419ev_periodic_again (EV_P_ ev_periodic *w)
2560{ 3420{
… …
2566 3426
2567#ifndef SA_RESTART 3427#ifndef SA_RESTART
2568# define SA_RESTART 0 3428# define SA_RESTART 0
2569#endif 3429#endif
2570 3430
3431#if EV_SIGNAL_ENABLE
3432
2571void noinline 3433void noinline
2572ev_signal_start (EV_P_ ev_signal *w) 3434ev_signal_start (EV_P_ ev_signal *w)
2573{ 3435{
2574#if EV_MULTIPLICITY
2575 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2576#endif
2577 if (expect_false (ev_is_active (w))) 3436 if (expect_false (ev_is_active (w)))
2578 return; 3437 return;
2579 3438
2580 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3439 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2581 3440
2582 evpipe_init (EV_A); 3441#if EV_MULTIPLICITY
3442 assert (("libev: a signal must not be attached to two different loops",
3443 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2583 3444
2584 EV_FREQUENT_CHECK; 3445 signals [w->signum - 1].loop = EV_A;
3446#endif
2585 3447
3448 EV_FREQUENT_CHECK;
3449
3450#if EV_USE_SIGNALFD
3451 if (sigfd == -2)
2586 { 3452 {
2587#ifndef _WIN32 3453 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2588 sigset_t full, prev; 3454 if (sigfd < 0 && errno == EINVAL)
2589 sigfillset (&full); 3455 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2590 sigprocmask (SIG_SETMASK, &full, &prev);
2591#endif
2592 3456
2593 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3457 if (sigfd >= 0)
3458 {
3459 fd_intern (sigfd); /* doing it twice will not hurt */
2594 3460
2595#ifndef _WIN32 3461 sigemptyset (&sigfd_set);
2596 sigprocmask (SIG_SETMASK, &prev, 0); 3462
2597#endif 3463 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3464 ev_set_priority (&sigfd_w, EV_MAXPRI);
3465 ev_io_start (EV_A_ &sigfd_w);
3466 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3467 }
2598 } 3468 }
3469
3470 if (sigfd >= 0)
3471 {
3472 /* TODO: check .head */
3473 sigaddset (&sigfd_set, w->signum);
3474 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3475
3476 signalfd (sigfd, &sigfd_set, 0);
3477 }
3478#endif
2599 3479
2600 ev_start (EV_A_ (W)w, 1); 3480 ev_start (EV_A_ (W)w, 1);
2601 wlist_add (&signals [w->signum - 1].head, (WL)w); 3481 wlist_add (&signals [w->signum - 1].head, (WL)w);
2602 3482
2603 if (!((WL)w)->next) 3483 if (!((WL)w)->next)
3484# if EV_USE_SIGNALFD
3485 if (sigfd < 0) /*TODO*/
3486# endif
2604 { 3487 {
2605#if _WIN32 3488# ifdef _WIN32
3489 evpipe_init (EV_A);
3490
2606 signal (w->signum, ev_sighandler); 3491 signal (w->signum, ev_sighandler);
2607#else 3492# else
2608 struct sigaction sa = { }; 3493 struct sigaction sa;
3494
3495 evpipe_init (EV_A);
3496
2609 sa.sa_handler = ev_sighandler; 3497 sa.sa_handler = ev_sighandler;
2610 sigfillset (&sa.sa_mask); 3498 sigfillset (&sa.sa_mask);
2611 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3499 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2612 sigaction (w->signum, &sa, 0); 3500 sigaction (w->signum, &sa, 0);
3501
3502 if (origflags & EVFLAG_NOSIGMASK)
3503 {
3504 sigemptyset (&sa.sa_mask);
3505 sigaddset (&sa.sa_mask, w->signum);
3506 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3507 }
2613#endif 3508#endif
2614 } 3509 }
2615 3510
2616 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2617} 3512}
2618 3513
2619void noinline 3514void noinline
… …
2627 3522
2628 wlist_del (&signals [w->signum - 1].head, (WL)w); 3523 wlist_del (&signals [w->signum - 1].head, (WL)w);
2629 ev_stop (EV_A_ (W)w); 3524 ev_stop (EV_A_ (W)w);
2630 3525
2631 if (!signals [w->signum - 1].head) 3526 if (!signals [w->signum - 1].head)
3527 {
3528#if EV_MULTIPLICITY
3529 signals [w->signum - 1].loop = 0; /* unattach from signal */
3530#endif
3531#if EV_USE_SIGNALFD
3532 if (sigfd >= 0)
3533 {
3534 sigset_t ss;
3535
3536 sigemptyset (&ss);
3537 sigaddset (&ss, w->signum);
3538 sigdelset (&sigfd_set, w->signum);
3539
3540 signalfd (sigfd, &sigfd_set, 0);
3541 sigprocmask (SIG_UNBLOCK, &ss, 0);
3542 }
3543 else
3544#endif
2632 signal (w->signum, SIG_DFL); 3545 signal (w->signum, SIG_DFL);
3546 }
2633 3547
2634 EV_FREQUENT_CHECK; 3548 EV_FREQUENT_CHECK;
2635} 3549}
3550
3551#endif
3552
3553#if EV_CHILD_ENABLE
2636 3554
2637void 3555void
2638ev_child_start (EV_P_ ev_child *w) 3556ev_child_start (EV_P_ ev_child *w)
2639{ 3557{
2640#if EV_MULTIPLICITY 3558#if EV_MULTIPLICITY
… …
2644 return; 3562 return;
2645 3563
2646 EV_FREQUENT_CHECK; 3564 EV_FREQUENT_CHECK;
2647 3565
2648 ev_start (EV_A_ (W)w, 1); 3566 ev_start (EV_A_ (W)w, 1);
2649 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3567 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2650 3568
2651 EV_FREQUENT_CHECK; 3569 EV_FREQUENT_CHECK;
2652} 3570}
2653 3571
2654void 3572void
… …
2658 if (expect_false (!ev_is_active (w))) 3576 if (expect_false (!ev_is_active (w)))
2659 return; 3577 return;
2660 3578
2661 EV_FREQUENT_CHECK; 3579 EV_FREQUENT_CHECK;
2662 3580
2663 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3581 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2664 ev_stop (EV_A_ (W)w); 3582 ev_stop (EV_A_ (W)w);
2665 3583
2666 EV_FREQUENT_CHECK; 3584 EV_FREQUENT_CHECK;
2667} 3585}
3586
3587#endif
2668 3588
2669#if EV_STAT_ENABLE 3589#if EV_STAT_ENABLE
2670 3590
2671# ifdef _WIN32 3591# ifdef _WIN32
2672# undef lstat 3592# undef lstat
… …
2678#define MIN_STAT_INTERVAL 0.1074891 3598#define MIN_STAT_INTERVAL 0.1074891
2679 3599
2680static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3600static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2681 3601
2682#if EV_USE_INOTIFY 3602#if EV_USE_INOTIFY
2683# define EV_INOTIFY_BUFSIZE 8192 3603
3604/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3605# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2684 3606
2685static void noinline 3607static void noinline
2686infy_add (EV_P_ ev_stat *w) 3608infy_add (EV_P_ ev_stat *w)
2687{ 3609{
2688 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); 3610 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);
2689 3611
2690 if (w->wd < 0) 3612 if (w->wd >= 0)
3613 {
3614 struct statfs sfs;
3615
3616 /* now local changes will be tracked by inotify, but remote changes won't */
3617 /* unless the filesystem is known to be local, we therefore still poll */
3618 /* also do poll on <2.6.25, but with normal frequency */
3619
3620 if (!fs_2625)
3621 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3622 else if (!statfs (w->path, &sfs)
3623 && (sfs.f_type == 0x1373 /* devfs */
3624 || sfs.f_type == 0xEF53 /* ext2/3 */
3625 || sfs.f_type == 0x3153464a /* jfs */
3626 || sfs.f_type == 0x52654973 /* reiser3 */
3627 || sfs.f_type == 0x01021994 /* tempfs */
3628 || sfs.f_type == 0x58465342 /* xfs */))
3629 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3630 else
3631 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2691 { 3632 }
3633 else
3634 {
3635 /* can't use inotify, continue to stat */
2692 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3636 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2693 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2694 3637
2695 /* monitor some parent directory for speedup hints */ 3638 /* if path is not there, monitor some parent directory for speedup hints */
2696 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3639 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2697 /* but an efficiency issue only */ 3640 /* but an efficiency issue only */
2698 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3641 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2699 { 3642 {
2700 char path [4096]; 3643 char path [4096];
… …
2710 if (!pend || pend == path) 3653 if (!pend || pend == path)
2711 break; 3654 break;
2712 3655
2713 *pend = 0; 3656 *pend = 0;
2714 w->wd = inotify_add_watch (fs_fd, path, mask); 3657 w->wd = inotify_add_watch (fs_fd, path, mask);
2715 } 3658 }
2716 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3659 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2717 } 3660 }
2718 } 3661 }
2719 3662
2720 if (w->wd >= 0) 3663 if (w->wd >= 0)
2721 {
2722 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3664 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2723 3665
2724 /* now local changes will be tracked by inotify, but remote changes won't */ 3666 /* now re-arm timer, if required */
2725 /* unless the filesystem it known to be local, we therefore still poll */ 3667 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2726 /* also do poll on <2.6.25, but with normal frequency */
2727 struct statfs sfs;
2728
2729 if (fs_2625 && !statfs (w->path, &sfs))
2730 if (sfs.f_type == 0x1373 /* devfs */
2731 || sfs.f_type == 0xEF53 /* ext2/3 */
2732 || sfs.f_type == 0x3153464a /* jfs */
2733 || sfs.f_type == 0x52654973 /* reiser3 */
2734 || sfs.f_type == 0x01021994 /* tempfs */
2735 || sfs.f_type == 0x58465342 /* xfs */)
2736 return;
2737
2738 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2739 ev_timer_again (EV_A_ &w->timer); 3668 ev_timer_again (EV_A_ &w->timer);
2740 } 3669 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2741} 3670}
2742 3671
2743static void noinline 3672static void noinline
2744infy_del (EV_P_ ev_stat *w) 3673infy_del (EV_P_ ev_stat *w)
2745{ 3674{
… …
2748 3677
2749 if (wd < 0) 3678 if (wd < 0)
2750 return; 3679 return;
2751 3680
2752 w->wd = -2; 3681 w->wd = -2;
2753 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3682 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2754 wlist_del (&fs_hash [slot].head, (WL)w); 3683 wlist_del (&fs_hash [slot].head, (WL)w);
2755 3684
2756 /* remove this watcher, if others are watching it, they will rearm */ 3685 /* remove this watcher, if others are watching it, they will rearm */
2757 inotify_rm_watch (fs_fd, wd); 3686 inotify_rm_watch (fs_fd, wd);
2758} 3687}
… …
2760static void noinline 3689static void noinline
2761infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3690infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2762{ 3691{
2763 if (slot < 0) 3692 if (slot < 0)
2764 /* overflow, need to check for all hash slots */ 3693 /* overflow, need to check for all hash slots */
2765 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3694 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2766 infy_wd (EV_A_ slot, wd, ev); 3695 infy_wd (EV_A_ slot, wd, ev);
2767 else 3696 else
2768 { 3697 {
2769 WL w_; 3698 WL w_;
2770 3699
2771 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3700 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2772 { 3701 {
2773 ev_stat *w = (ev_stat *)w_; 3702 ev_stat *w = (ev_stat *)w_;
2774 w_ = w_->next; /* lets us remove this watcher and all before it */ 3703 w_ = w_->next; /* lets us remove this watcher and all before it */
2775 3704
2776 if (w->wd == wd || wd == -1) 3705 if (w->wd == wd || wd == -1)
2777 { 3706 {
2778 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3707 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2779 { 3708 {
2780 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3709 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2781 w->wd = -1; 3710 w->wd = -1;
2782 infy_add (EV_A_ w); /* re-add, no matter what */ 3711 infy_add (EV_A_ w); /* re-add, no matter what */
2783 } 3712 }
2784 3713
2785 stat_timer_cb (EV_A_ &w->timer, 0); 3714 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2790 3719
2791static void 3720static void
2792infy_cb (EV_P_ ev_io *w, int revents) 3721infy_cb (EV_P_ ev_io *w, int revents)
2793{ 3722{
2794 char buf [EV_INOTIFY_BUFSIZE]; 3723 char buf [EV_INOTIFY_BUFSIZE];
2795 struct inotify_event *ev = (struct inotify_event *)buf;
2796 int ofs; 3724 int ofs;
2797 int len = read (fs_fd, buf, sizeof (buf)); 3725 int len = read (fs_fd, buf, sizeof (buf));
2798 3726
2799 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3727 for (ofs = 0; ofs < len; )
3728 {
3729 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2800 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3730 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3731 ofs += sizeof (struct inotify_event) + ev->len;
3732 }
2801} 3733}
2802 3734
2803inline_size void 3735inline_size void ecb_cold
2804check_2625 (EV_P) 3736ev_check_2625 (EV_P)
2805{ 3737{
2806 /* kernels < 2.6.25 are borked 3738 /* kernels < 2.6.25 are borked
2807 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3739 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2808 */ 3740 */
2809 struct utsname buf; 3741 if (ev_linux_version () < 0x020619)
2810 int major, minor, micro;
2811
2812 if (uname (&buf))
2813 return; 3742 return;
2814 3743
2815 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2816 return;
2817
2818 if (major < 2
2819 || (major == 2 && minor < 6)
2820 || (major == 2 && minor == 6 && micro < 25))
2821 return;
2822
2823 fs_2625 = 1; 3744 fs_2625 = 1;
3745}
3746
3747inline_size int
3748infy_newfd (void)
3749{
3750#if defined IN_CLOEXEC && defined IN_NONBLOCK
3751 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3752 if (fd >= 0)
3753 return fd;
3754#endif
3755 return inotify_init ();
2824} 3756}
2825 3757
2826inline_size void 3758inline_size void
2827infy_init (EV_P) 3759infy_init (EV_P)
2828{ 3760{
2829 if (fs_fd != -2) 3761 if (fs_fd != -2)
2830 return; 3762 return;
2831 3763
2832 fs_fd = -1; 3764 fs_fd = -1;
2833 3765
2834 check_2625 (EV_A); 3766 ev_check_2625 (EV_A);
2835 3767
2836 fs_fd = inotify_init (); 3768 fs_fd = infy_newfd ();
2837 3769
2838 if (fs_fd >= 0) 3770 if (fs_fd >= 0)
2839 { 3771 {
3772 fd_intern (fs_fd);
2840 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3773 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2841 ev_set_priority (&fs_w, EV_MAXPRI); 3774 ev_set_priority (&fs_w, EV_MAXPRI);
2842 ev_io_start (EV_A_ &fs_w); 3775 ev_io_start (EV_A_ &fs_w);
3776 ev_unref (EV_A);
2843 } 3777 }
2844} 3778}
2845 3779
2846inline_size void 3780inline_size void
2847infy_fork (EV_P) 3781infy_fork (EV_P)
… …
2849 int slot; 3783 int slot;
2850 3784
2851 if (fs_fd < 0) 3785 if (fs_fd < 0)
2852 return; 3786 return;
2853 3787
3788 ev_ref (EV_A);
3789 ev_io_stop (EV_A_ &fs_w);
2854 close (fs_fd); 3790 close (fs_fd);
2855 fs_fd = inotify_init (); 3791 fs_fd = infy_newfd ();
2856 3792
3793 if (fs_fd >= 0)
3794 {
3795 fd_intern (fs_fd);
3796 ev_io_set (&fs_w, fs_fd, EV_READ);
3797 ev_io_start (EV_A_ &fs_w);
3798 ev_unref (EV_A);
3799 }
3800
2857 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3801 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2858 { 3802 {
2859 WL w_ = fs_hash [slot].head; 3803 WL w_ = fs_hash [slot].head;
2860 fs_hash [slot].head = 0; 3804 fs_hash [slot].head = 0;
2861 3805
2862 while (w_) 3806 while (w_)
… …
2867 w->wd = -1; 3811 w->wd = -1;
2868 3812
2869 if (fs_fd >= 0) 3813 if (fs_fd >= 0)
2870 infy_add (EV_A_ w); /* re-add, no matter what */ 3814 infy_add (EV_A_ w); /* re-add, no matter what */
2871 else 3815 else
3816 {
3817 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3818 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 ev_timer_again (EV_A_ &w->timer); 3819 ev_timer_again (EV_A_ &w->timer);
3820 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3821 }
2873 } 3822 }
2874 } 3823 }
2875} 3824}
2876 3825
2877#endif 3826#endif
… …
2894static void noinline 3843static void noinline
2895stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3844stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2896{ 3845{
2897 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3846 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2898 3847
2899 /* we copy this here each the time so that */ 3848 ev_statdata prev = w->attr;
2900 /* prev has the old value when the callback gets invoked */
2901 w->prev = w->attr;
2902 ev_stat_stat (EV_A_ w); 3849 ev_stat_stat (EV_A_ w);
2903 3850
2904 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3851 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2905 if ( 3852 if (
2906 w->prev.st_dev != w->attr.st_dev 3853 prev.st_dev != w->attr.st_dev
2907 || w->prev.st_ino != w->attr.st_ino 3854 || prev.st_ino != w->attr.st_ino
2908 || w->prev.st_mode != w->attr.st_mode 3855 || prev.st_mode != w->attr.st_mode
2909 || w->prev.st_nlink != w->attr.st_nlink 3856 || prev.st_nlink != w->attr.st_nlink
2910 || w->prev.st_uid != w->attr.st_uid 3857 || prev.st_uid != w->attr.st_uid
2911 || w->prev.st_gid != w->attr.st_gid 3858 || prev.st_gid != w->attr.st_gid
2912 || w->prev.st_rdev != w->attr.st_rdev 3859 || prev.st_rdev != w->attr.st_rdev
2913 || w->prev.st_size != w->attr.st_size 3860 || prev.st_size != w->attr.st_size
2914 || w->prev.st_atime != w->attr.st_atime 3861 || prev.st_atime != w->attr.st_atime
2915 || w->prev.st_mtime != w->attr.st_mtime 3862 || prev.st_mtime != w->attr.st_mtime
2916 || w->prev.st_ctime != w->attr.st_ctime 3863 || prev.st_ctime != w->attr.st_ctime
2917 ) { 3864 ) {
3865 /* we only update w->prev on actual differences */
3866 /* in case we test more often than invoke the callback, */
3867 /* to ensure that prev is always different to attr */
3868 w->prev = prev;
3869
2918 #if EV_USE_INOTIFY 3870 #if EV_USE_INOTIFY
2919 if (fs_fd >= 0) 3871 if (fs_fd >= 0)
2920 { 3872 {
2921 infy_del (EV_A_ w); 3873 infy_del (EV_A_ w);
2922 infy_add (EV_A_ w); 3874 infy_add (EV_A_ w);
… …
2947 3899
2948 if (fs_fd >= 0) 3900 if (fs_fd >= 0)
2949 infy_add (EV_A_ w); 3901 infy_add (EV_A_ w);
2950 else 3902 else
2951#endif 3903#endif
3904 {
2952 ev_timer_again (EV_A_ &w->timer); 3905 ev_timer_again (EV_A_ &w->timer);
3906 ev_unref (EV_A);
3907 }
2953 3908
2954 ev_start (EV_A_ (W)w, 1); 3909 ev_start (EV_A_ (W)w, 1);
2955 3910
2956 EV_FREQUENT_CHECK; 3911 EV_FREQUENT_CHECK;
2957} 3912}
… …
2966 EV_FREQUENT_CHECK; 3921 EV_FREQUENT_CHECK;
2967 3922
2968#if EV_USE_INOTIFY 3923#if EV_USE_INOTIFY
2969 infy_del (EV_A_ w); 3924 infy_del (EV_A_ w);
2970#endif 3925#endif
3926
3927 if (ev_is_active (&w->timer))
3928 {
3929 ev_ref (EV_A);
2971 ev_timer_stop (EV_A_ &w->timer); 3930 ev_timer_stop (EV_A_ &w->timer);
3931 }
2972 3932
2973 ev_stop (EV_A_ (W)w); 3933 ev_stop (EV_A_ (W)w);
2974 3934
2975 EV_FREQUENT_CHECK; 3935 EV_FREQUENT_CHECK;
2976} 3936}
… …
3021 3981
3022 EV_FREQUENT_CHECK; 3982 EV_FREQUENT_CHECK;
3023} 3983}
3024#endif 3984#endif
3025 3985
3986#if EV_PREPARE_ENABLE
3026void 3987void
3027ev_prepare_start (EV_P_ ev_prepare *w) 3988ev_prepare_start (EV_P_ ev_prepare *w)
3028{ 3989{
3029 if (expect_false (ev_is_active (w))) 3990 if (expect_false (ev_is_active (w)))
3030 return; 3991 return;
… …
3056 4017
3057 ev_stop (EV_A_ (W)w); 4018 ev_stop (EV_A_ (W)w);
3058 4019
3059 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
3060} 4021}
4022#endif
3061 4023
4024#if EV_CHECK_ENABLE
3062void 4025void
3063ev_check_start (EV_P_ ev_check *w) 4026ev_check_start (EV_P_ ev_check *w)
3064{ 4027{
3065 if (expect_false (ev_is_active (w))) 4028 if (expect_false (ev_is_active (w)))
3066 return; 4029 return;
… …
3092 4055
3093 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
3094 4057
3095 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
3096} 4059}
4060#endif
3097 4061
3098#if EV_EMBED_ENABLE 4062#if EV_EMBED_ENABLE
3099void noinline 4063void noinline
3100ev_embed_sweep (EV_P_ ev_embed *w) 4064ev_embed_sweep (EV_P_ ev_embed *w)
3101{ 4065{
3102 ev_loop (w->other, EVLOOP_NONBLOCK); 4066 ev_run (w->other, EVRUN_NOWAIT);
3103} 4067}
3104 4068
3105static void 4069static void
3106embed_io_cb (EV_P_ ev_io *io, int revents) 4070embed_io_cb (EV_P_ ev_io *io, int revents)
3107{ 4071{
3108 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4072 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3109 4073
3110 if (ev_cb (w)) 4074 if (ev_cb (w))
3111 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4075 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3112 else 4076 else
3113 ev_loop (w->other, EVLOOP_NONBLOCK); 4077 ev_run (w->other, EVRUN_NOWAIT);
3114} 4078}
3115 4079
3116static void 4080static void
3117embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4081embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3118{ 4082{
3119 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4083 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3120 4084
3121 { 4085 {
3122 struct ev_loop *loop = w->other; 4086 EV_P = w->other;
3123 4087
3124 while (fdchangecnt) 4088 while (fdchangecnt)
3125 { 4089 {
3126 fd_reify (EV_A); 4090 fd_reify (EV_A);
3127 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4091 ev_run (EV_A_ EVRUN_NOWAIT);
3128 } 4092 }
3129 } 4093 }
3130} 4094}
3131 4095
3132static void 4096static void
… …
3135 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4099 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3136 4100
3137 ev_embed_stop (EV_A_ w); 4101 ev_embed_stop (EV_A_ w);
3138 4102
3139 { 4103 {
3140 struct ev_loop *loop = w->other; 4104 EV_P = w->other;
3141 4105
3142 ev_loop_fork (EV_A); 4106 ev_loop_fork (EV_A);
3143 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4107 ev_run (EV_A_ EVRUN_NOWAIT);
3144 } 4108 }
3145 4109
3146 ev_embed_start (EV_A_ w); 4110 ev_embed_start (EV_A_ w);
3147} 4111}
3148 4112
… …
3159{ 4123{
3160 if (expect_false (ev_is_active (w))) 4124 if (expect_false (ev_is_active (w)))
3161 return; 4125 return;
3162 4126
3163 { 4127 {
3164 struct ev_loop *loop = w->other; 4128 EV_P = w->other;
3165 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4129 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3166 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4130 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3167 } 4131 }
3168 4132
3169 EV_FREQUENT_CHECK; 4133 EV_FREQUENT_CHECK;
… …
3196 4160
3197 ev_io_stop (EV_A_ &w->io); 4161 ev_io_stop (EV_A_ &w->io);
3198 ev_prepare_stop (EV_A_ &w->prepare); 4162 ev_prepare_stop (EV_A_ &w->prepare);
3199 ev_fork_stop (EV_A_ &w->fork); 4163 ev_fork_stop (EV_A_ &w->fork);
3200 4164
4165 ev_stop (EV_A_ (W)w);
4166
3201 EV_FREQUENT_CHECK; 4167 EV_FREQUENT_CHECK;
3202} 4168}
3203#endif 4169#endif
3204 4170
3205#if EV_FORK_ENABLE 4171#if EV_FORK_ENABLE
… …
3238 4204
3239 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
3240} 4206}
3241#endif 4207#endif
3242 4208
4209#if EV_CLEANUP_ENABLE
4210void
4211ev_cleanup_start (EV_P_ ev_cleanup *w)
4212{
4213 if (expect_false (ev_is_active (w)))
4214 return;
4215
4216 EV_FREQUENT_CHECK;
4217
4218 ev_start (EV_A_ (W)w, ++cleanupcnt);
4219 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4220 cleanups [cleanupcnt - 1] = w;
4221
4222 /* cleanup watchers should never keep a refcount on the loop */
4223 ev_unref (EV_A);
4224 EV_FREQUENT_CHECK;
4225}
4226
4227void
4228ev_cleanup_stop (EV_P_ ev_cleanup *w)
4229{
4230 clear_pending (EV_A_ (W)w);
4231 if (expect_false (!ev_is_active (w)))
4232 return;
4233
4234 EV_FREQUENT_CHECK;
4235 ev_ref (EV_A);
4236
4237 {
4238 int active = ev_active (w);
4239
4240 cleanups [active - 1] = cleanups [--cleanupcnt];
4241 ev_active (cleanups [active - 1]) = active;
4242 }
4243
4244 ev_stop (EV_A_ (W)w);
4245
4246 EV_FREQUENT_CHECK;
4247}
4248#endif
4249
3243#if EV_ASYNC_ENABLE 4250#if EV_ASYNC_ENABLE
3244void 4251void
3245ev_async_start (EV_P_ ev_async *w) 4252ev_async_start (EV_P_ ev_async *w)
3246{ 4253{
3247 if (expect_false (ev_is_active (w))) 4254 if (expect_false (ev_is_active (w)))
3248 return; 4255 return;
3249 4256
4257 w->sent = 0;
4258
3250 evpipe_init (EV_A); 4259 evpipe_init (EV_A);
3251 4260
3252 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
3253 4262
3254 ev_start (EV_A_ (W)w, ++asynccnt); 4263 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3281 4290
3282void 4291void
3283ev_async_send (EV_P_ ev_async *w) 4292ev_async_send (EV_P_ ev_async *w)
3284{ 4293{
3285 w->sent = 1; 4294 w->sent = 1;
3286 evpipe_write (EV_A_ &gotasync); 4295 evpipe_write (EV_A_ &async_pending);
3287} 4296}
3288#endif 4297#endif
3289 4298
3290/*****************************************************************************/ 4299/*****************************************************************************/
3291 4300
… …
3331{ 4340{
3332 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4341 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3333 4342
3334 if (expect_false (!once)) 4343 if (expect_false (!once))
3335 { 4344 {
3336 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4345 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3337 return; 4346 return;
3338 } 4347 }
3339 4348
3340 once->cb = cb; 4349 once->cb = cb;
3341 once->arg = arg; 4350 once->arg = arg;
… …
3356} 4365}
3357 4366
3358/*****************************************************************************/ 4367/*****************************************************************************/
3359 4368
3360#if EV_WALK_ENABLE 4369#if EV_WALK_ENABLE
3361void 4370void ecb_cold
3362ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3363{ 4372{
3364 int i, j; 4373 int i, j;
3365 ev_watcher_list *wl, *wn; 4374 ev_watcher_list *wl, *wn;
3366 4375
… …
3410 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4419 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3411#endif 4420#endif
3412 4421
3413#if EV_IDLE_ENABLE 4422#if EV_IDLE_ENABLE
3414 if (types & EV_IDLE) 4423 if (types & EV_IDLE)
3415 for (j = NUMPRI; i--; ) 4424 for (j = NUMPRI; j--; )
3416 for (i = idlecnt [j]; i--; ) 4425 for (i = idlecnt [j]; i--; )
3417 cb (EV_A_ EV_IDLE, idles [j][i]); 4426 cb (EV_A_ EV_IDLE, idles [j][i]);
3418#endif 4427#endif
3419 4428
3420#if EV_FORK_ENABLE 4429#if EV_FORK_ENABLE
… …
3428 if (types & EV_ASYNC) 4437 if (types & EV_ASYNC)
3429 for (i = asynccnt; i--; ) 4438 for (i = asynccnt; i--; )
3430 cb (EV_A_ EV_ASYNC, asyncs [i]); 4439 cb (EV_A_ EV_ASYNC, asyncs [i]);
3431#endif 4440#endif
3432 4441
4442#if EV_PREPARE_ENABLE
3433 if (types & EV_PREPARE) 4443 if (types & EV_PREPARE)
3434 for (i = preparecnt; i--; ) 4444 for (i = preparecnt; i--; )
3435#if EV_EMBED_ENABLE 4445# if EV_EMBED_ENABLE
3436 if (ev_cb (prepares [i]) != embed_prepare_cb) 4446 if (ev_cb (prepares [i]) != embed_prepare_cb)
3437#endif 4447# endif
3438 cb (EV_A_ EV_PREPARE, prepares [i]); 4448 cb (EV_A_ EV_PREPARE, prepares [i]);
4449#endif
3439 4450
4451#if EV_CHECK_ENABLE
3440 if (types & EV_CHECK) 4452 if (types & EV_CHECK)
3441 for (i = checkcnt; i--; ) 4453 for (i = checkcnt; i--; )
3442 cb (EV_A_ EV_CHECK, checks [i]); 4454 cb (EV_A_ EV_CHECK, checks [i]);
4455#endif
3443 4456
4457#if EV_SIGNAL_ENABLE
3444 if (types & EV_SIGNAL) 4458 if (types & EV_SIGNAL)
3445 for (i = 0; i < signalmax; ++i) 4459 for (i = 0; i < EV_NSIG - 1; ++i)
3446 for (wl = signals [i].head; wl; ) 4460 for (wl = signals [i].head; wl; )
3447 { 4461 {
3448 wn = wl->next; 4462 wn = wl->next;
3449 cb (EV_A_ EV_SIGNAL, wl); 4463 cb (EV_A_ EV_SIGNAL, wl);
3450 wl = wn; 4464 wl = wn;
3451 } 4465 }
4466#endif
3452 4467
4468#if EV_CHILD_ENABLE
3453 if (types & EV_CHILD) 4469 if (types & EV_CHILD)
3454 for (i = EV_PID_HASHSIZE; i--; ) 4470 for (i = (EV_PID_HASHSIZE); i--; )
3455 for (wl = childs [i]; wl; ) 4471 for (wl = childs [i]; wl; )
3456 { 4472 {
3457 wn = wl->next; 4473 wn = wl->next;
3458 cb (EV_A_ EV_CHILD, wl); 4474 cb (EV_A_ EV_CHILD, wl);
3459 wl = wn; 4475 wl = wn;
3460 } 4476 }
4477#endif
3461/* EV_STAT 0x00001000 /* stat data changed */ 4478/* EV_STAT 0x00001000 /* stat data changed */
3462/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4479/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3463} 4480}
3464#endif 4481#endif
3465 4482
3466#if EV_MULTIPLICITY 4483#if EV_MULTIPLICITY
3467 #include "ev_wrap.h" 4484 #include "ev_wrap.h"
3468#endif 4485#endif
3469 4486
3470#ifdef __cplusplus
3471}
3472#endif
3473

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