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Comparing libev/ev.c (file contents):
Revision 1.309 by root, Sun Jul 26 04:24:17 2009 UTC vs.
Revision 1.412 by root, Wed Feb 22 01:53:00 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 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
… …
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
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# 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
174#endif 197#endif
175 198
176#ifndef _WIN32 199#ifndef _WIN32
177# include <sys/time.h> 200# include <sys/time.h>
178# include <sys/wait.h> 201# include <sys/wait.h>
… …
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
183# include <windows.h> 206# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
186# endif 209# endif
210# undef EV_AVOID_STDIO
187#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
188 220
189/* 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 */
190 222
191/* try to deduce the maximum number of signals on this platform */ 223/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 224#if defined (EV_NSIG)
… …
204#elif defined (MAXSIG) 236#elif defined (MAXSIG)
205# define EV_NSIG (MAXSIG+1) 237# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 238#elif defined (MAX_SIG)
207# define EV_NSIG (MAX_SIG+1) 239# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 240#elif defined (SIGARRAYSIZE)
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 242#elif defined (_sys_nsig)
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 244#else
213# error "unable to find value for NSIG, please report" 245# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */ 246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
215# define EV_NSIG 65 248# define EV_NSIG 65
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
216#endif 253#endif
217 254
218#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 258# else
222# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
223# endif 260# endif
224#endif 261#endif
225 262
226#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 266# else
230# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
231# endif 268# endif
232#endif 269#endif
233 270
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 273#endif
237 274
238#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 278# else
242# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
243# endif 280# endif
244#endif 281#endif
245 282
246#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 285#endif
249 286
250#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
251# ifdef _WIN32 288# ifdef _WIN32
252# define EV_USE_POLL 0 289# define EV_USE_POLL 0
253# else 290# else
254# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 292# endif
256#endif 293#endif
257 294
258#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 298# else
262# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
263# endif 300# endif
264#endif 301#endif
265 302
… …
271# define EV_USE_PORT 0 308# define EV_USE_PORT 0
272#endif 309#endif
273 310
274#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 314# else
278# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
279# endif 316# endif
280#endif 317#endif
281 318
282#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 321#endif
289 322
290#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 325#endif
297 326
298#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 330# else
302# define EV_USE_EVENTFD 0 331# define EV_USE_EVENTFD 0
303# endif 332# endif
304#endif 333#endif
305 334
306#ifndef EV_USE_SIGNALFD 335#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 337# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 338# else
310# define EV_USE_SIGNALFD 0 339# define EV_USE_SIGNALFD 0
311# endif 340# endif
312#endif 341#endif
313 342
… …
316# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
318#endif 347#endif
319 348
320#ifndef EV_VERIFY 349#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 351#endif
323 352
324#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 355#endif
327 356
328#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
330#endif 359#endif
331 360
332/* 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, */
333/* which makes programs even slower. might work on other unices, too. */ 362/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 363#if EV_USE_CLOCK_SYSCALL
… …
343# endif 372# endif
344#endif 373#endif
345 374
346/* 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 */
347 376
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
348#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
349# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
351#endif 386#endif
352 387
… …
359# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
361#endif 396#endif
362 397
363#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux)
365# include <sys/select.h> 401# include <sys/select.h>
366# endif 402# endif
367#endif 403#endif
368 404
369#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 406# include <sys/statfs.h>
372# include <sys/inotify.h> 407# include <sys/inotify.h>
373/* 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 */
374# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
386# include <stdint.h> 421# include <stdint.h>
387# ifndef EFD_NONBLOCK 422# ifndef EFD_NONBLOCK
388# define EFD_NONBLOCK O_NONBLOCK 423# define EFD_NONBLOCK O_NONBLOCK
389# endif 424# endif
390# ifndef EFD_CLOEXEC 425# ifndef EFD_CLOEXEC
426# ifdef O_CLOEXEC
391# define EFD_CLOEXEC O_CLOEXEC 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
392# endif 431# endif
393# ifdef __cplusplus 432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
394extern "C" { 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
395# endif 440# endif
396int eventfd (unsigned int initval, int flags); 441# ifndef SFD_CLOEXEC
397# ifdef __cplusplus 442# ifdef O_CLOEXEC
398} 443# define SFD_CLOEXEC O_CLOEXEC
444# else
445# define SFD_CLOEXEC 02000000
446# endif
399# endif 447# endif
400#endif 448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
401 449
402#if EV_USE_SIGNALFD 450struct signalfd_siginfo
403# include <sys/signalfd.h> 451{
452 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)];
454};
404#endif 455#endif
405 456
406/**/ 457/**/
407 458
408#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
409# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
410#else 461#else
411# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
412#endif 463#endif
413 464
414/* 465/*
415 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
416 * It is added to ev_rt_now when scheduling periodics
417 * to ensure progress, time-wise, even when rounding
418 * errors are against us.
419 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
420 * Better solutions welcome.
421 */ 468 */
422#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 */
423 471
424#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) */
425#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) */
426/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
427 474
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;
428#if __GNUC__ >= 4 519 #if __GNUC__
429# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
430# 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
431#else 526#else
432# define expect(expr,value) (expr) 527 #include <inttypes.h>
433# define noinline
434# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
435# define inline
436# 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)))
437#endif 542 #endif
543#endif
438 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
571 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
574 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined(__s390__) || defined(__s390x__)
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined(__mips__)
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #endif
585 #endif
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
590 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined(_WIN32)
599 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
606 #endif
607#endif
608
609#ifndef ECB_MEMORY_FENCE
610 #if !ECB_AVOID_PTHREADS
611 /*
612 * if you get undefined symbol references to pthread_mutex_lock,
613 * or failure to find pthread.h, then you should implement
614 * the ECB_MEMORY_FENCE operations for your cpu/compiler
615 * OR provide pthread.h and link against the posix thread library
616 * of your system.
617 */
618 #include <pthread.h>
619 #define ECB_NEEDS_PTHREADS 1
620 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
621
622 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
623 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
624 #endif
625#endif
626
627#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
628 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
629#endif
630
631#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
632 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
633#endif
634
635/*****************************************************************************/
636
637#define ECB_C99 (__STDC_VERSION__ >= 199901L)
638
639#if __cplusplus
640 #define ecb_inline static inline
641#elif ECB_GCC_VERSION(2,5)
642 #define ecb_inline static __inline__
643#elif ECB_C99
644 #define ecb_inline static inline
645#else
646 #define ecb_inline static
647#endif
648
649#if ECB_GCC_VERSION(3,3)
650 #define ecb_restrict __restrict__
651#elif ECB_C99
652 #define ecb_restrict restrict
653#else
654 #define ecb_restrict
655#endif
656
657typedef int ecb_bool;
658
659#define ECB_CONCAT_(a, b) a ## b
660#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
661#define ECB_STRINGIFY_(a) # a
662#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
663
664#define ecb_function_ ecb_inline
665
666#if ECB_GCC_VERSION(3,1)
667 #define ecb_attribute(attrlist) __attribute__(attrlist)
668 #define ecb_is_constant(expr) __builtin_constant_p (expr)
669 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
670 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
671#else
672 #define ecb_attribute(attrlist)
673 #define ecb_is_constant(expr) 0
674 #define ecb_expect(expr,value) (expr)
675 #define ecb_prefetch(addr,rw,locality)
676#endif
677
678/* no emulation for ecb_decltype */
679#if ECB_GCC_VERSION(4,5)
680 #define ecb_decltype(x) __decltype(x)
681#elif ECB_GCC_VERSION(3,0)
682 #define ecb_decltype(x) __typeof(x)
683#endif
684
685#define ecb_noinline ecb_attribute ((__noinline__))
686#define ecb_noreturn ecb_attribute ((__noreturn__))
687#define ecb_unused ecb_attribute ((__unused__))
688#define ecb_const ecb_attribute ((__const__))
689#define ecb_pure ecb_attribute ((__pure__))
690
691#if ECB_GCC_VERSION(4,3)
692 #define ecb_artificial ecb_attribute ((__artificial__))
693 #define ecb_hot ecb_attribute ((__hot__))
694 #define ecb_cold ecb_attribute ((__cold__))
695#else
696 #define ecb_artificial
697 #define ecb_hot
698 #define ecb_cold
699#endif
700
701/* put around conditional expressions if you are very sure that the */
702/* expression is mostly true or mostly false. note that these return */
703/* booleans, not the expression. */
439#define expect_false(expr) expect ((expr) != 0, 0) 704#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
440#define expect_true(expr) expect ((expr) != 0, 1) 705#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
706/* for compatibility to the rest of the world */
707#define ecb_likely(expr) ecb_expect_true (expr)
708#define ecb_unlikely(expr) ecb_expect_false (expr)
709
710/* count trailing zero bits and count # of one bits */
711#if ECB_GCC_VERSION(3,4)
712 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
713 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
714 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
715 #define ecb_ctz32(x) __builtin_ctz (x)
716 #define ecb_ctz64(x) __builtin_ctzll (x)
717 #define ecb_popcount32(x) __builtin_popcount (x)
718 /* no popcountll */
719#else
720 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
721 ecb_function_ int
722 ecb_ctz32 (uint32_t x)
723 {
724 int r = 0;
725
726 x &= ~x + 1; /* this isolates the lowest bit */
727
728#if ECB_branchless_on_i386
729 r += !!(x & 0xaaaaaaaa) << 0;
730 r += !!(x & 0xcccccccc) << 1;
731 r += !!(x & 0xf0f0f0f0) << 2;
732 r += !!(x & 0xff00ff00) << 3;
733 r += !!(x & 0xffff0000) << 4;
734#else
735 if (x & 0xaaaaaaaa) r += 1;
736 if (x & 0xcccccccc) r += 2;
737 if (x & 0xf0f0f0f0) r += 4;
738 if (x & 0xff00ff00) r += 8;
739 if (x & 0xffff0000) r += 16;
740#endif
741
742 return r;
743 }
744
745 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
746 ecb_function_ int
747 ecb_ctz64 (uint64_t x)
748 {
749 int shift = x & 0xffffffffU ? 0 : 32;
750 return ecb_ctz32 (x >> shift) + shift;
751 }
752
753 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
754 ecb_function_ int
755 ecb_popcount32 (uint32_t x)
756 {
757 x -= (x >> 1) & 0x55555555;
758 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
759 x = ((x >> 4) + x) & 0x0f0f0f0f;
760 x *= 0x01010101;
761
762 return x >> 24;
763 }
764
765 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
766 ecb_function_ int ecb_ld32 (uint32_t x)
767 {
768 int r = 0;
769
770 if (x >> 16) { x >>= 16; r += 16; }
771 if (x >> 8) { x >>= 8; r += 8; }
772 if (x >> 4) { x >>= 4; r += 4; }
773 if (x >> 2) { x >>= 2; r += 2; }
774 if (x >> 1) { r += 1; }
775
776 return r;
777 }
778
779 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
780 ecb_function_ int ecb_ld64 (uint64_t x)
781 {
782 int r = 0;
783
784 if (x >> 32) { x >>= 32; r += 32; }
785
786 return r + ecb_ld32 (x);
787 }
788#endif
789
790ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
792{
793 return ( (x * 0x0802U & 0x22110U)
794 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
795}
796
797ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
799{
800 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
801 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
802 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
803 x = ( x >> 8 ) | ( x << 8);
804
805 return x;
806}
807
808ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
810{
811 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
812 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
813 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
814 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
815 x = ( x >> 16 ) | ( x << 16);
816
817 return x;
818}
819
820/* popcount64 is only available on 64 bit cpus as gcc builtin */
821/* so for this version we are lazy */
822ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
823ecb_function_ int
824ecb_popcount64 (uint64_t x)
825{
826 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
827}
828
829ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
830ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
831ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
832ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
833ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
834ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
835ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
836ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
837
838ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
839ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
840ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
841ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
842ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
843ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
844ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
845ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
846
847#if ECB_GCC_VERSION(4,3)
848 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
849 #define ecb_bswap32(x) __builtin_bswap32 (x)
850 #define ecb_bswap64(x) __builtin_bswap64 (x)
851#else
852 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
853 ecb_function_ uint16_t
854 ecb_bswap16 (uint16_t x)
855 {
856 return ecb_rotl16 (x, 8);
857 }
858
859 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
860 ecb_function_ uint32_t
861 ecb_bswap32 (uint32_t x)
862 {
863 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
864 }
865
866 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
867 ecb_function_ uint64_t
868 ecb_bswap64 (uint64_t x)
869 {
870 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
871 }
872#endif
873
874#if ECB_GCC_VERSION(4,5)
875 #define ecb_unreachable() __builtin_unreachable ()
876#else
877 /* this seems to work fine, but gcc always emits a warning for it :/ */
878 ecb_inline void ecb_unreachable (void) ecb_noreturn;
879 ecb_inline void ecb_unreachable (void) { }
880#endif
881
882/* try to tell the compiler that some condition is definitely true */
883#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
884
885ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
886ecb_inline unsigned char
887ecb_byteorder_helper (void)
888{
889 const uint32_t u = 0x11223344;
890 return *(unsigned char *)&u;
891}
892
893ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
894ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
895ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
896ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
897
898#if ECB_GCC_VERSION(3,0) || ECB_C99
899 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
900#else
901 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
902#endif
903
904#if __cplusplus
905 template<typename T>
906 static inline T ecb_div_rd (T val, T div)
907 {
908 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
909 }
910 template<typename T>
911 static inline T ecb_div_ru (T val, T div)
912 {
913 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
914 }
915#else
916 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
917 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
918#endif
919
920#if ecb_cplusplus_does_not_suck
921 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
922 template<typename T, int N>
923 static inline int ecb_array_length (const T (&arr)[N])
924 {
925 return N;
926 }
927#else
928 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
929#endif
930
931#endif
932
933/* ECB.H END */
934
935#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
936/* if your architecture doesn't need memory fences, e.g. because it is
937 * single-cpu/core, or if you use libev in a project that doesn't use libev
938 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
939 * libev, in which cases the memory fences become nops.
940 * alternatively, you can remove this #error and link against libpthread,
941 * which will then provide the memory fences.
942 */
943# error "memory fences not defined for your architecture, please report"
944#endif
945
946#ifndef ECB_MEMORY_FENCE
947# define ECB_MEMORY_FENCE do { } while (0)
948# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
949# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
950#endif
951
952#define expect_false(cond) ecb_expect_false (cond)
953#define expect_true(cond) ecb_expect_true (cond)
954#define noinline ecb_noinline
955
441#define inline_size static inline 956#define inline_size ecb_inline
442 957
443#if EV_MINIMAL 958#if EV_FEATURE_CODE
959# define inline_speed ecb_inline
960#else
444# define inline_speed static noinline 961# define inline_speed static noinline
445#else
446# define inline_speed static inline
447#endif 962#endif
448 963
449#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 964#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
450 965
451#if EV_MINPRI == EV_MAXPRI 966#if EV_MINPRI == EV_MAXPRI
… …
464#define ev_active(w) ((W)(w))->active 979#define ev_active(w) ((W)(w))->active
465#define ev_at(w) ((WT)(w))->at 980#define ev_at(w) ((WT)(w))->at
466 981
467#if EV_USE_REALTIME 982#if EV_USE_REALTIME
468/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 983/* sig_atomic_t is used to avoid per-thread variables or locking but still */
469/* giving it a reasonably high chance of working on typical architetcures */ 984/* giving it a reasonably high chance of working on typical architectures */
470static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 985static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
471#endif 986#endif
472 987
473#if EV_USE_MONOTONIC 988#if EV_USE_MONOTONIC
474static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 989static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
475#endif 990#endif
476 991
992#ifndef EV_FD_TO_WIN32_HANDLE
993# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
994#endif
995#ifndef EV_WIN32_HANDLE_TO_FD
996# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
997#endif
998#ifndef EV_WIN32_CLOSE_FD
999# define EV_WIN32_CLOSE_FD(fd) close (fd)
1000#endif
1001
477#ifdef _WIN32 1002#ifdef _WIN32
478# include "ev_win32.c" 1003# include "ev_win32.c"
479#endif 1004#endif
480 1005
481/*****************************************************************************/ 1006/*****************************************************************************/
482 1007
1008/* define a suitable floor function (only used by periodics atm) */
1009
1010#if EV_USE_FLOOR
1011# include <math.h>
1012# define ev_floor(v) floor (v)
1013#else
1014
1015#include <float.h>
1016
1017/* a floor() replacement function, should be independent of ev_tstamp type */
1018static ev_tstamp noinline
1019ev_floor (ev_tstamp v)
1020{
1021 /* the choice of shift factor is not terribly important */
1022#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1023 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1024#else
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1026#endif
1027
1028 /* argument too large for an unsigned long? */
1029 if (expect_false (v >= shift))
1030 {
1031 ev_tstamp f;
1032
1033 if (v == v - 1.)
1034 return v; /* very large number */
1035
1036 f = shift * ev_floor (v * (1. / shift));
1037 return f + ev_floor (v - f);
1038 }
1039
1040 /* special treatment for negative args? */
1041 if (expect_false (v < 0.))
1042 {
1043 ev_tstamp f = -ev_floor (-v);
1044
1045 return f - (f == v ? 0 : 1);
1046 }
1047
1048 /* fits into an unsigned long */
1049 return (unsigned long)v;
1050}
1051
1052#endif
1053
1054/*****************************************************************************/
1055
1056#ifdef __linux
1057# include <sys/utsname.h>
1058#endif
1059
1060static unsigned int noinline ecb_cold
1061ev_linux_version (void)
1062{
1063#ifdef __linux
1064 unsigned int v = 0;
1065 struct utsname buf;
1066 int i;
1067 char *p = buf.release;
1068
1069 if (uname (&buf))
1070 return 0;
1071
1072 for (i = 3+1; --i; )
1073 {
1074 unsigned int c = 0;
1075
1076 for (;;)
1077 {
1078 if (*p >= '0' && *p <= '9')
1079 c = c * 10 + *p++ - '0';
1080 else
1081 {
1082 p += *p == '.';
1083 break;
1084 }
1085 }
1086
1087 v = (v << 8) | c;
1088 }
1089
1090 return v;
1091#else
1092 return 0;
1093#endif
1094}
1095
1096/*****************************************************************************/
1097
1098#if EV_AVOID_STDIO
1099static void noinline ecb_cold
1100ev_printerr (const char *msg)
1101{
1102 write (STDERR_FILENO, msg, strlen (msg));
1103}
1104#endif
1105
483static void (*syserr_cb)(const char *msg); 1106static void (*syserr_cb)(const char *msg);
484 1107
485void 1108void ecb_cold
486ev_set_syserr_cb (void (*cb)(const char *msg)) 1109ev_set_syserr_cb (void (*cb)(const char *msg))
487{ 1110{
488 syserr_cb = cb; 1111 syserr_cb = cb;
489} 1112}
490 1113
491static void noinline 1114static void noinline ecb_cold
492ev_syserr (const char *msg) 1115ev_syserr (const char *msg)
493{ 1116{
494 if (!msg) 1117 if (!msg)
495 msg = "(libev) system error"; 1118 msg = "(libev) system error";
496 1119
497 if (syserr_cb) 1120 if (syserr_cb)
498 syserr_cb (msg); 1121 syserr_cb (msg);
499 else 1122 else
500 { 1123 {
1124#if EV_AVOID_STDIO
1125 ev_printerr (msg);
1126 ev_printerr (": ");
1127 ev_printerr (strerror (errno));
1128 ev_printerr ("\n");
1129#else
501 perror (msg); 1130 perror (msg);
1131#endif
502 abort (); 1132 abort ();
503 } 1133 }
504} 1134}
505 1135
506static void * 1136static void *
507ev_realloc_emul (void *ptr, long size) 1137ev_realloc_emul (void *ptr, long size)
508{ 1138{
1139#if __GLIBC__
1140 return realloc (ptr, size);
1141#else
509 /* some systems, notably openbsd and darwin, fail to properly 1142 /* some systems, notably openbsd and darwin, fail to properly
510 * implement realloc (x, 0) (as required by both ansi c-98 and 1143 * implement realloc (x, 0) (as required by both ansi c-89 and
511 * the single unix specification, so work around them here. 1144 * the single unix specification, so work around them here.
512 */ 1145 */
513 1146
514 if (size) 1147 if (size)
515 return realloc (ptr, size); 1148 return realloc (ptr, size);
516 1149
517 free (ptr); 1150 free (ptr);
518 return 0; 1151 return 0;
1152#endif
519} 1153}
520 1154
521static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1155static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
522 1156
523void 1157void ecb_cold
524ev_set_allocator (void *(*cb)(void *ptr, long size)) 1158ev_set_allocator (void *(*cb)(void *ptr, long size))
525{ 1159{
526 alloc = cb; 1160 alloc = cb;
527} 1161}
528 1162
… …
531{ 1165{
532 ptr = alloc (ptr, size); 1166 ptr = alloc (ptr, size);
533 1167
534 if (!ptr && size) 1168 if (!ptr && size)
535 { 1169 {
1170#if EV_AVOID_STDIO
1171 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1172#else
536 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1173 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1174#endif
537 abort (); 1175 abort ();
538 } 1176 }
539 1177
540 return ptr; 1178 return ptr;
541} 1179}
… …
557 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1195 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
558 unsigned char unused; 1196 unsigned char unused;
559#if EV_USE_EPOLL 1197#if EV_USE_EPOLL
560 unsigned int egen; /* generation counter to counter epoll bugs */ 1198 unsigned int egen; /* generation counter to counter epoll bugs */
561#endif 1199#endif
562#if EV_SELECT_IS_WINSOCKET 1200#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
563 SOCKET handle; 1201 SOCKET handle;
1202#endif
1203#if EV_USE_IOCP
1204 OVERLAPPED or, ow;
564#endif 1205#endif
565} ANFD; 1206} ANFD;
566 1207
567/* stores the pending event set for a given watcher */ 1208/* stores the pending event set for a given watcher */
568typedef struct 1209typedef struct
… …
610 #undef VAR 1251 #undef VAR
611 }; 1252 };
612 #include "ev_wrap.h" 1253 #include "ev_wrap.h"
613 1254
614 static struct ev_loop default_loop_struct; 1255 static struct ev_loop default_loop_struct;
615 struct ev_loop *ev_default_loop_ptr; 1256 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
616 1257
617#else 1258#else
618 1259
619 ev_tstamp ev_rt_now; 1260 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
620 #define VAR(name,decl) static decl; 1261 #define VAR(name,decl) static decl;
621 #include "ev_vars.h" 1262 #include "ev_vars.h"
622 #undef VAR 1263 #undef VAR
623 1264
624 static int ev_default_loop_ptr; 1265 static int ev_default_loop_ptr;
625 1266
626#endif 1267#endif
627 1268
628#if EV_MINIMAL < 2 1269#if EV_FEATURE_API
629# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1270# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
630# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1271# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
631# define EV_INVOKE_PENDING invoke_cb (EV_A) 1272# define EV_INVOKE_PENDING invoke_cb (EV_A)
632#else 1273#else
633# define EV_RELEASE_CB (void)0 1274# define EV_RELEASE_CB (void)0
634# define EV_ACQUIRE_CB (void)0 1275# define EV_ACQUIRE_CB (void)0
635# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1276# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
636#endif 1277#endif
637 1278
638#define EVUNLOOP_RECURSE 0x80 1279#define EVBREAK_RECURSE 0x80
639 1280
640/*****************************************************************************/ 1281/*****************************************************************************/
641 1282
642#ifndef EV_HAVE_EV_TIME 1283#ifndef EV_HAVE_EV_TIME
643ev_tstamp 1284ev_tstamp
… …
687 if (delay > 0.) 1328 if (delay > 0.)
688 { 1329 {
689#if EV_USE_NANOSLEEP 1330#if EV_USE_NANOSLEEP
690 struct timespec ts; 1331 struct timespec ts;
691 1332
692 ts.tv_sec = (time_t)delay; 1333 EV_TS_SET (ts, delay);
693 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
694
695 nanosleep (&ts, 0); 1334 nanosleep (&ts, 0);
696#elif defined(_WIN32) 1335#elif defined(_WIN32)
697 Sleep ((unsigned long)(delay * 1e3)); 1336 Sleep ((unsigned long)(delay * 1e3));
698#else 1337#else
699 struct timeval tv; 1338 struct timeval tv;
700 1339
701 tv.tv_sec = (time_t)delay;
702 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
703
704 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1340 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
705 /* something not guaranteed by newer posix versions, but guaranteed */ 1341 /* something not guaranteed by newer posix versions, but guaranteed */
706 /* by older ones */ 1342 /* by older ones */
1343 EV_TV_SET (tv, delay);
707 select (0, 0, 0, 0, &tv); 1344 select (0, 0, 0, 0, &tv);
708#endif 1345#endif
709 } 1346 }
710} 1347}
711 1348
712/*****************************************************************************/ 1349/*****************************************************************************/
713 1350
714#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1351#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
715 1352
716/* find a suitable new size for the given array, */ 1353/* find a suitable new size for the given array, */
717/* hopefully by rounding to a ncie-to-malloc size */ 1354/* hopefully by rounding to a nice-to-malloc size */
718inline_size int 1355inline_size int
719array_nextsize (int elem, int cur, int cnt) 1356array_nextsize (int elem, int cur, int cnt)
720{ 1357{
721 int ncur = cur + 1; 1358 int ncur = cur + 1;
722 1359
723 do 1360 do
724 ncur <<= 1; 1361 ncur <<= 1;
725 while (cnt > ncur); 1362 while (cnt > ncur);
726 1363
727 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1364 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
728 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1365 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
729 { 1366 {
730 ncur *= elem; 1367 ncur *= elem;
731 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1368 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
732 ncur = ncur - sizeof (void *) * 4; 1369 ncur = ncur - sizeof (void *) * 4;
… …
734 } 1371 }
735 1372
736 return ncur; 1373 return ncur;
737} 1374}
738 1375
739static noinline void * 1376static void * noinline ecb_cold
740array_realloc (int elem, void *base, int *cur, int cnt) 1377array_realloc (int elem, void *base, int *cur, int cnt)
741{ 1378{
742 *cur = array_nextsize (elem, *cur, cnt); 1379 *cur = array_nextsize (elem, *cur, cnt);
743 return ev_realloc (base, elem * *cur); 1380 return ev_realloc (base, elem * *cur);
744} 1381}
… …
747 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1384 memset ((void *)(base), 0, sizeof (*(base)) * (count))
748 1385
749#define array_needsize(type,base,cur,cnt,init) \ 1386#define array_needsize(type,base,cur,cnt,init) \
750 if (expect_false ((cnt) > (cur))) \ 1387 if (expect_false ((cnt) > (cur))) \
751 { \ 1388 { \
752 int ocur_ = (cur); \ 1389 int ecb_unused ocur_ = (cur); \
753 (base) = (type *)array_realloc \ 1390 (base) = (type *)array_realloc \
754 (sizeof (type), (base), &(cur), (cnt)); \ 1391 (sizeof (type), (base), &(cur), (cnt)); \
755 init ((base) + (ocur_), (cur) - ocur_); \ 1392 init ((base) + (ocur_), (cur) - ocur_); \
756 } 1393 }
757 1394
… …
818} 1455}
819 1456
820/*****************************************************************************/ 1457/*****************************************************************************/
821 1458
822inline_speed void 1459inline_speed void
823fd_event_nc (EV_P_ int fd, int revents) 1460fd_event_nocheck (EV_P_ int fd, int revents)
824{ 1461{
825 ANFD *anfd = anfds + fd; 1462 ANFD *anfd = anfds + fd;
826 ev_io *w; 1463 ev_io *w;
827 1464
828 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1465 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
840fd_event (EV_P_ int fd, int revents) 1477fd_event (EV_P_ int fd, int revents)
841{ 1478{
842 ANFD *anfd = anfds + fd; 1479 ANFD *anfd = anfds + fd;
843 1480
844 if (expect_true (!anfd->reify)) 1481 if (expect_true (!anfd->reify))
845 fd_event_nc (EV_A_ fd, revents); 1482 fd_event_nocheck (EV_A_ fd, revents);
846} 1483}
847 1484
848void 1485void
849ev_feed_fd_event (EV_P_ int fd, int revents) 1486ev_feed_fd_event (EV_P_ int fd, int revents)
850{ 1487{
851 if (fd >= 0 && fd < anfdmax) 1488 if (fd >= 0 && fd < anfdmax)
852 fd_event_nc (EV_A_ fd, revents); 1489 fd_event_nocheck (EV_A_ fd, revents);
853} 1490}
854 1491
855/* make sure the external fd watch events are in-sync */ 1492/* make sure the external fd watch events are in-sync */
856/* with the kernel/libev internal state */ 1493/* with the kernel/libev internal state */
857inline_size void 1494inline_size void
858fd_reify (EV_P) 1495fd_reify (EV_P)
859{ 1496{
860 int i; 1497 int i;
861 1498
1499#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1500 for (i = 0; i < fdchangecnt; ++i)
1501 {
1502 int fd = fdchanges [i];
1503 ANFD *anfd = anfds + fd;
1504
1505 if (anfd->reify & EV__IOFDSET && anfd->head)
1506 {
1507 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1508
1509 if (handle != anfd->handle)
1510 {
1511 unsigned long arg;
1512
1513 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1514
1515 /* handle changed, but fd didn't - we need to do it in two steps */
1516 backend_modify (EV_A_ fd, anfd->events, 0);
1517 anfd->events = 0;
1518 anfd->handle = handle;
1519 }
1520 }
1521 }
1522#endif
1523
862 for (i = 0; i < fdchangecnt; ++i) 1524 for (i = 0; i < fdchangecnt; ++i)
863 { 1525 {
864 int fd = fdchanges [i]; 1526 int fd = fdchanges [i];
865 ANFD *anfd = anfds + fd; 1527 ANFD *anfd = anfds + fd;
866 ev_io *w; 1528 ev_io *w;
867 1529
868 unsigned char events = 0; 1530 unsigned char o_events = anfd->events;
1531 unsigned char o_reify = anfd->reify;
869 1532
870 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1533 anfd->reify = 0;
871 events |= (unsigned char)w->events;
872 1534
873#if EV_SELECT_IS_WINSOCKET 1535 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
874 if (events)
875 { 1536 {
876 unsigned long arg; 1537 anfd->events = 0;
877 #ifdef EV_FD_TO_WIN32_HANDLE 1538
878 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1539 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
879 #else 1540 anfd->events |= (unsigned char)w->events;
880 anfd->handle = _get_osfhandle (fd); 1541
881 #endif 1542 if (o_events != anfd->events)
882 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1543 o_reify = EV__IOFDSET; /* actually |= */
883 } 1544 }
884#endif
885 1545
886 { 1546 if (o_reify & EV__IOFDSET)
887 unsigned char o_events = anfd->events;
888 unsigned char o_reify = anfd->reify;
889
890 anfd->reify = 0;
891 anfd->events = events;
892
893 if (o_events != events || o_reify & EV__IOFDSET)
894 backend_modify (EV_A_ fd, o_events, events); 1547 backend_modify (EV_A_ fd, o_events, anfd->events);
895 }
896 } 1548 }
897 1549
898 fdchangecnt = 0; 1550 fdchangecnt = 0;
899} 1551}
900 1552
… …
912 fdchanges [fdchangecnt - 1] = fd; 1564 fdchanges [fdchangecnt - 1] = fd;
913 } 1565 }
914} 1566}
915 1567
916/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1568/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
917inline_speed void 1569inline_speed void ecb_cold
918fd_kill (EV_P_ int fd) 1570fd_kill (EV_P_ int fd)
919{ 1571{
920 ev_io *w; 1572 ev_io *w;
921 1573
922 while ((w = (ev_io *)anfds [fd].head)) 1574 while ((w = (ev_io *)anfds [fd].head))
… …
924 ev_io_stop (EV_A_ w); 1576 ev_io_stop (EV_A_ w);
925 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1577 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
926 } 1578 }
927} 1579}
928 1580
929/* check whether the given fd is atcually valid, for error recovery */ 1581/* check whether the given fd is actually valid, for error recovery */
930inline_size int 1582inline_size int ecb_cold
931fd_valid (int fd) 1583fd_valid (int fd)
932{ 1584{
933#ifdef _WIN32 1585#ifdef _WIN32
934 return _get_osfhandle (fd) != -1; 1586 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
935#else 1587#else
936 return fcntl (fd, F_GETFD) != -1; 1588 return fcntl (fd, F_GETFD) != -1;
937#endif 1589#endif
938} 1590}
939 1591
940/* called on EBADF to verify fds */ 1592/* called on EBADF to verify fds */
941static void noinline 1593static void noinline ecb_cold
942fd_ebadf (EV_P) 1594fd_ebadf (EV_P)
943{ 1595{
944 int fd; 1596 int fd;
945 1597
946 for (fd = 0; fd < anfdmax; ++fd) 1598 for (fd = 0; fd < anfdmax; ++fd)
… …
948 if (!fd_valid (fd) && errno == EBADF) 1600 if (!fd_valid (fd) && errno == EBADF)
949 fd_kill (EV_A_ fd); 1601 fd_kill (EV_A_ fd);
950} 1602}
951 1603
952/* called on ENOMEM in select/poll to kill some fds and retry */ 1604/* called on ENOMEM in select/poll to kill some fds and retry */
953static void noinline 1605static void noinline ecb_cold
954fd_enomem (EV_P) 1606fd_enomem (EV_P)
955{ 1607{
956 int fd; 1608 int fd;
957 1609
958 for (fd = anfdmax; fd--; ) 1610 for (fd = anfdmax; fd--; )
… …
976 anfds [fd].emask = 0; 1628 anfds [fd].emask = 0;
977 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1629 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
978 } 1630 }
979} 1631}
980 1632
1633/* used to prepare libev internal fd's */
1634/* this is not fork-safe */
1635inline_speed void
1636fd_intern (int fd)
1637{
1638#ifdef _WIN32
1639 unsigned long arg = 1;
1640 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1641#else
1642 fcntl (fd, F_SETFD, FD_CLOEXEC);
1643 fcntl (fd, F_SETFL, O_NONBLOCK);
1644#endif
1645}
1646
981/*****************************************************************************/ 1647/*****************************************************************************/
982 1648
983/* 1649/*
984 * the heap functions want a real array index. array index 0 uis guaranteed to not 1650 * the heap functions want a real array index. array index 0 is guaranteed to not
985 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1651 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
986 * the branching factor of the d-tree. 1652 * the branching factor of the d-tree.
987 */ 1653 */
988 1654
989/* 1655/*
… …
1103 1769
1104/* move an element suitably so it is in a correct place */ 1770/* move an element suitably so it is in a correct place */
1105inline_size void 1771inline_size void
1106adjustheap (ANHE *heap, int N, int k) 1772adjustheap (ANHE *heap, int N, int k)
1107{ 1773{
1108 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1774 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1109 upheap (heap, k); 1775 upheap (heap, k);
1110 else 1776 else
1111 downheap (heap, N, k); 1777 downheap (heap, N, k);
1112} 1778}
1113 1779
… …
1137 1803
1138static ANSIG signals [EV_NSIG - 1]; 1804static ANSIG signals [EV_NSIG - 1];
1139 1805
1140/*****************************************************************************/ 1806/*****************************************************************************/
1141 1807
1142/* used to prepare libev internal fd's */ 1808#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1143/* this is not fork-safe */
1144inline_speed void
1145fd_intern (int fd)
1146{
1147#ifdef _WIN32
1148 unsigned long arg = 1;
1149 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1150#else
1151 fcntl (fd, F_SETFD, FD_CLOEXEC);
1152 fcntl (fd, F_SETFL, O_NONBLOCK);
1153#endif
1154}
1155 1809
1156static void noinline 1810static void noinline ecb_cold
1157evpipe_init (EV_P) 1811evpipe_init (EV_P)
1158{ 1812{
1159 if (!ev_is_active (&pipe_w)) 1813 if (!ev_is_active (&pipe_w))
1160 { 1814 {
1161#if EV_USE_EVENTFD 1815# if EV_USE_EVENTFD
1162 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1816 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1163 if (evfd < 0 && errno == EINVAL) 1817 if (evfd < 0 && errno == EINVAL)
1164 evfd = eventfd (0, 0); 1818 evfd = eventfd (0, 0);
1165 1819
1166 if (evfd >= 0) 1820 if (evfd >= 0)
… …
1168 evpipe [0] = -1; 1822 evpipe [0] = -1;
1169 fd_intern (evfd); /* doing it twice doesn't hurt */ 1823 fd_intern (evfd); /* doing it twice doesn't hurt */
1170 ev_io_set (&pipe_w, evfd, EV_READ); 1824 ev_io_set (&pipe_w, evfd, EV_READ);
1171 } 1825 }
1172 else 1826 else
1173#endif 1827# endif
1174 { 1828 {
1175 while (pipe (evpipe)) 1829 while (pipe (evpipe))
1176 ev_syserr ("(libev) error creating signal/async pipe"); 1830 ev_syserr ("(libev) error creating signal/async pipe");
1177 1831
1178 fd_intern (evpipe [0]); 1832 fd_intern (evpipe [0]);
… …
1183 ev_io_start (EV_A_ &pipe_w); 1837 ev_io_start (EV_A_ &pipe_w);
1184 ev_unref (EV_A); /* watcher should not keep loop alive */ 1838 ev_unref (EV_A); /* watcher should not keep loop alive */
1185 } 1839 }
1186} 1840}
1187 1841
1188inline_size void 1842inline_speed void
1189evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1843evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1190{ 1844{
1191 if (!*flag) 1845 if (expect_true (*flag))
1846 return;
1847
1848 *flag = 1;
1849
1850 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1851
1852 pipe_write_skipped = 1;
1853
1854 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1855
1856 if (pipe_write_wanted)
1192 { 1857 {
1858 int old_errno;
1859
1860 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1861
1193 int old_errno = errno; /* save errno because write might clobber it */ 1862 old_errno = errno; /* save errno because write will clobber it */
1194
1195 *flag = 1;
1196 1863
1197#if EV_USE_EVENTFD 1864#if EV_USE_EVENTFD
1198 if (evfd >= 0) 1865 if (evfd >= 0)
1199 { 1866 {
1200 uint64_t counter = 1; 1867 uint64_t counter = 1;
1201 write (evfd, &counter, sizeof (uint64_t)); 1868 write (evfd, &counter, sizeof (uint64_t));
1202 } 1869 }
1203 else 1870 else
1204#endif 1871#endif
1872 {
1873 /* win32 people keep sending patches that change this write() to send() */
1874 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1875 /* so when you think this write should be a send instead, please find out */
1876 /* where your send() is from - it's definitely not the microsoft send, and */
1877 /* tell me. thank you. */
1878 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1879 /* check the ev documentation on how to use this flag */
1205 write (evpipe [1], &old_errno, 1); 1880 write (evpipe [1], &(evpipe [1]), 1);
1881 }
1206 1882
1207 errno = old_errno; 1883 errno = old_errno;
1208 } 1884 }
1209} 1885}
1210 1886
… …
1213static void 1889static void
1214pipecb (EV_P_ ev_io *iow, int revents) 1890pipecb (EV_P_ ev_io *iow, int revents)
1215{ 1891{
1216 int i; 1892 int i;
1217 1893
1894 if (revents & EV_READ)
1895 {
1218#if EV_USE_EVENTFD 1896#if EV_USE_EVENTFD
1219 if (evfd >= 0) 1897 if (evfd >= 0)
1220 { 1898 {
1221 uint64_t counter; 1899 uint64_t counter;
1222 read (evfd, &counter, sizeof (uint64_t)); 1900 read (evfd, &counter, sizeof (uint64_t));
1223 } 1901 }
1224 else 1902 else
1225#endif 1903#endif
1226 { 1904 {
1227 char dummy; 1905 char dummy;
1906 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1228 read (evpipe [0], &dummy, 1); 1907 read (evpipe [0], &dummy, 1);
1908 }
1229 } 1909 }
1230 1910
1911 pipe_write_skipped = 0;
1912
1913#if EV_SIGNAL_ENABLE
1231 if (sig_pending) 1914 if (sig_pending)
1232 { 1915 {
1233 sig_pending = 0; 1916 sig_pending = 0;
1234 1917
1235 for (i = EV_NSIG - 1; i--; ) 1918 for (i = EV_NSIG - 1; i--; )
1236 if (expect_false (signals [i].pending)) 1919 if (expect_false (signals [i].pending))
1237 ev_feed_signal_event (EV_A_ i + 1); 1920 ev_feed_signal_event (EV_A_ i + 1);
1238 } 1921 }
1922#endif
1239 1923
1240#if EV_ASYNC_ENABLE 1924#if EV_ASYNC_ENABLE
1241 if (async_pending) 1925 if (async_pending)
1242 { 1926 {
1243 async_pending = 0; 1927 async_pending = 0;
… …
1252#endif 1936#endif
1253} 1937}
1254 1938
1255/*****************************************************************************/ 1939/*****************************************************************************/
1256 1940
1941void
1942ev_feed_signal (int signum)
1943{
1944#if EV_MULTIPLICITY
1945 EV_P = signals [signum - 1].loop;
1946
1947 if (!EV_A)
1948 return;
1949#endif
1950
1951 if (!ev_active (&pipe_w))
1952 return;
1953
1954 signals [signum - 1].pending = 1;
1955 evpipe_write (EV_A_ &sig_pending);
1956}
1957
1257static void 1958static void
1258ev_sighandler (int signum) 1959ev_sighandler (int signum)
1259{ 1960{
1260#if EV_MULTIPLICITY
1261 EV_P = signals [signum - 1].loop;
1262#endif
1263
1264#if _WIN32 1961#ifdef _WIN32
1265 signal (signum, ev_sighandler); 1962 signal (signum, ev_sighandler);
1266#endif 1963#endif
1267 1964
1268 signals [signum - 1].pending = 1; 1965 ev_feed_signal (signum);
1269 evpipe_write (EV_A_ &sig_pending);
1270} 1966}
1271 1967
1272void noinline 1968void noinline
1273ev_feed_signal_event (EV_P_ int signum) 1969ev_feed_signal_event (EV_P_ int signum)
1274{ 1970{
… …
1311 break; 2007 break;
1312 } 2008 }
1313} 2009}
1314#endif 2010#endif
1315 2011
2012#endif
2013
1316/*****************************************************************************/ 2014/*****************************************************************************/
1317 2015
2016#if EV_CHILD_ENABLE
1318static WL childs [EV_PID_HASHSIZE]; 2017static WL childs [EV_PID_HASHSIZE];
1319
1320#ifndef _WIN32
1321 2018
1322static ev_signal childev; 2019static ev_signal childev;
1323 2020
1324#ifndef WIFCONTINUED 2021#ifndef WIFCONTINUED
1325# define WIFCONTINUED(status) 0 2022# define WIFCONTINUED(status) 0
… …
1330child_reap (EV_P_ int chain, int pid, int status) 2027child_reap (EV_P_ int chain, int pid, int status)
1331{ 2028{
1332 ev_child *w; 2029 ev_child *w;
1333 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2030 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1334 2031
1335 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2032 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1336 { 2033 {
1337 if ((w->pid == pid || !w->pid) 2034 if ((w->pid == pid || !w->pid)
1338 && (!traced || (w->flags & 1))) 2035 && (!traced || (w->flags & 1)))
1339 { 2036 {
1340 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2037 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1365 /* make sure we are called again until all children have been reaped */ 2062 /* make sure we are called again until all children have been reaped */
1366 /* we need to do it this way so that the callback gets called before we continue */ 2063 /* we need to do it this way so that the callback gets called before we continue */
1367 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2064 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1368 2065
1369 child_reap (EV_A_ pid, pid, status); 2066 child_reap (EV_A_ pid, pid, status);
1370 if (EV_PID_HASHSIZE > 1) 2067 if ((EV_PID_HASHSIZE) > 1)
1371 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2068 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1372} 2069}
1373 2070
1374#endif 2071#endif
1375 2072
1376/*****************************************************************************/ 2073/*****************************************************************************/
1377 2074
2075#if EV_USE_IOCP
2076# include "ev_iocp.c"
2077#endif
1378#if EV_USE_PORT 2078#if EV_USE_PORT
1379# include "ev_port.c" 2079# include "ev_port.c"
1380#endif 2080#endif
1381#if EV_USE_KQUEUE 2081#if EV_USE_KQUEUE
1382# include "ev_kqueue.c" 2082# include "ev_kqueue.c"
… …
1389#endif 2089#endif
1390#if EV_USE_SELECT 2090#if EV_USE_SELECT
1391# include "ev_select.c" 2091# include "ev_select.c"
1392#endif 2092#endif
1393 2093
1394int 2094int ecb_cold
1395ev_version_major (void) 2095ev_version_major (void)
1396{ 2096{
1397 return EV_VERSION_MAJOR; 2097 return EV_VERSION_MAJOR;
1398} 2098}
1399 2099
1400int 2100int ecb_cold
1401ev_version_minor (void) 2101ev_version_minor (void)
1402{ 2102{
1403 return EV_VERSION_MINOR; 2103 return EV_VERSION_MINOR;
1404} 2104}
1405 2105
1406/* return true if we are running with elevated privileges and should ignore env variables */ 2106/* return true if we are running with elevated privileges and should ignore env variables */
1407int inline_size 2107int inline_size ecb_cold
1408enable_secure (void) 2108enable_secure (void)
1409{ 2109{
1410#ifdef _WIN32 2110#ifdef _WIN32
1411 return 0; 2111 return 0;
1412#else 2112#else
1413 return getuid () != geteuid () 2113 return getuid () != geteuid ()
1414 || getgid () != getegid (); 2114 || getgid () != getegid ();
1415#endif 2115#endif
1416} 2116}
1417 2117
1418unsigned int 2118unsigned int ecb_cold
1419ev_supported_backends (void) 2119ev_supported_backends (void)
1420{ 2120{
1421 unsigned int flags = 0; 2121 unsigned int flags = 0;
1422 2122
1423 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2123 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1427 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2127 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1428 2128
1429 return flags; 2129 return flags;
1430} 2130}
1431 2131
1432unsigned int 2132unsigned int ecb_cold
1433ev_recommended_backends (void) 2133ev_recommended_backends (void)
1434{ 2134{
1435 unsigned int flags = ev_supported_backends (); 2135 unsigned int flags = ev_supported_backends ();
1436 2136
1437#ifndef __NetBSD__ 2137#ifndef __NetBSD__
… …
1442#ifdef __APPLE__ 2142#ifdef __APPLE__
1443 /* only select works correctly on that "unix-certified" platform */ 2143 /* only select works correctly on that "unix-certified" platform */
1444 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2144 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1445 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2145 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1446#endif 2146#endif
2147#ifdef __FreeBSD__
2148 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2149#endif
1447 2150
1448 return flags; 2151 return flags;
1449} 2152}
1450 2153
1451unsigned int 2154unsigned int ecb_cold
1452ev_embeddable_backends (void) 2155ev_embeddable_backends (void)
1453{ 2156{
1454 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2157 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1455 2158
1456 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2159 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1457 /* please fix it and tell me how to detect the fix */ 2160 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1458 flags &= ~EVBACKEND_EPOLL; 2161 flags &= ~EVBACKEND_EPOLL;
1459 2162
1460 return flags; 2163 return flags;
1461} 2164}
1462 2165
1463unsigned int 2166unsigned int
1464ev_backend (EV_P) 2167ev_backend (EV_P)
1465{ 2168{
1466 return backend; 2169 return backend;
1467} 2170}
1468 2171
1469#if EV_MINIMAL < 2 2172#if EV_FEATURE_API
1470unsigned int 2173unsigned int
1471ev_loop_count (EV_P) 2174ev_iteration (EV_P)
1472{ 2175{
1473 return loop_count; 2176 return loop_count;
1474} 2177}
1475 2178
1476unsigned int 2179unsigned int
1477ev_loop_depth (EV_P) 2180ev_depth (EV_P)
1478{ 2181{
1479 return loop_depth; 2182 return loop_depth;
1480} 2183}
1481 2184
1482void 2185void
… …
1501ev_userdata (EV_P) 2204ev_userdata (EV_P)
1502{ 2205{
1503 return userdata; 2206 return userdata;
1504} 2207}
1505 2208
2209void
1506void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2210ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1507{ 2211{
1508 invoke_cb = invoke_pending_cb; 2212 invoke_cb = invoke_pending_cb;
1509} 2213}
1510 2214
2215void
1511void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2216ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1512{ 2217{
1513 release_cb = release; 2218 release_cb = release;
1514 acquire_cb = acquire; 2219 acquire_cb = acquire;
1515} 2220}
1516#endif 2221#endif
1517 2222
1518/* initialise a loop structure, must be zero-initialised */ 2223/* initialise a loop structure, must be zero-initialised */
1519static void noinline 2224static void noinline ecb_cold
1520loop_init (EV_P_ unsigned int flags) 2225loop_init (EV_P_ unsigned int flags)
1521{ 2226{
1522 if (!backend) 2227 if (!backend)
1523 { 2228 {
2229 origflags = flags;
2230
1524#if EV_USE_REALTIME 2231#if EV_USE_REALTIME
1525 if (!have_realtime) 2232 if (!have_realtime)
1526 { 2233 {
1527 struct timespec ts; 2234 struct timespec ts;
1528 2235
… …
1550 if (!(flags & EVFLAG_NOENV) 2257 if (!(flags & EVFLAG_NOENV)
1551 && !enable_secure () 2258 && !enable_secure ()
1552 && getenv ("LIBEV_FLAGS")) 2259 && getenv ("LIBEV_FLAGS"))
1553 flags = atoi (getenv ("LIBEV_FLAGS")); 2260 flags = atoi (getenv ("LIBEV_FLAGS"));
1554 2261
1555 ev_rt_now = ev_time (); 2262 ev_rt_now = ev_time ();
1556 mn_now = get_clock (); 2263 mn_now = get_clock ();
1557 now_floor = mn_now; 2264 now_floor = mn_now;
1558 rtmn_diff = ev_rt_now - mn_now; 2265 rtmn_diff = ev_rt_now - mn_now;
1559#if EV_MINIMAL < 2 2266#if EV_FEATURE_API
1560 invoke_cb = ev_invoke_pending; 2267 invoke_cb = ev_invoke_pending;
1561#endif 2268#endif
1562 2269
1563 io_blocktime = 0.; 2270 io_blocktime = 0.;
1564 timeout_blocktime = 0.; 2271 timeout_blocktime = 0.;
1565 backend = 0; 2272 backend = 0;
1566 backend_fd = -1; 2273 backend_fd = -1;
1567 sig_pending = 0; 2274 sig_pending = 0;
1568#if EV_ASYNC_ENABLE 2275#if EV_ASYNC_ENABLE
1569 async_pending = 0; 2276 async_pending = 0;
1570#endif 2277#endif
2278 pipe_write_skipped = 0;
2279 pipe_write_wanted = 0;
1571#if EV_USE_INOTIFY 2280#if EV_USE_INOTIFY
1572 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2281 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1573#endif 2282#endif
1574#if EV_USE_SIGNALFD 2283#if EV_USE_SIGNALFD
1575 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2284 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1576#endif 2285#endif
1577 2286
1578 if (!(flags & 0x0000ffffU)) 2287 if (!(flags & EVBACKEND_MASK))
1579 flags |= ev_recommended_backends (); 2288 flags |= ev_recommended_backends ();
1580 2289
2290#if EV_USE_IOCP
2291 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2292#endif
1581#if EV_USE_PORT 2293#if EV_USE_PORT
1582 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2294 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1583#endif 2295#endif
1584#if EV_USE_KQUEUE 2296#if EV_USE_KQUEUE
1585 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2297 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1594 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2306 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1595#endif 2307#endif
1596 2308
1597 ev_prepare_init (&pending_w, pendingcb); 2309 ev_prepare_init (&pending_w, pendingcb);
1598 2310
2311#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1599 ev_init (&pipe_w, pipecb); 2312 ev_init (&pipe_w, pipecb);
1600 ev_set_priority (&pipe_w, EV_MAXPRI); 2313 ev_set_priority (&pipe_w, EV_MAXPRI);
2314#endif
1601 } 2315 }
1602} 2316}
1603 2317
1604/* free up a loop structure */ 2318/* free up a loop structure */
1605static void noinline 2319void ecb_cold
1606loop_destroy (EV_P) 2320ev_loop_destroy (EV_P)
1607{ 2321{
1608 int i; 2322 int i;
2323
2324#if EV_MULTIPLICITY
2325 /* mimic free (0) */
2326 if (!EV_A)
2327 return;
2328#endif
2329
2330#if EV_CLEANUP_ENABLE
2331 /* queue cleanup watchers (and execute them) */
2332 if (expect_false (cleanupcnt))
2333 {
2334 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2335 EV_INVOKE_PENDING;
2336 }
2337#endif
2338
2339#if EV_CHILD_ENABLE
2340 if (ev_is_active (&childev))
2341 {
2342 ev_ref (EV_A); /* child watcher */
2343 ev_signal_stop (EV_A_ &childev);
2344 }
2345#endif
1609 2346
1610 if (ev_is_active (&pipe_w)) 2347 if (ev_is_active (&pipe_w))
1611 { 2348 {
1612 /*ev_ref (EV_A);*/ 2349 /*ev_ref (EV_A);*/
1613 /*ev_io_stop (EV_A_ &pipe_w);*/ 2350 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1617 close (evfd); 2354 close (evfd);
1618#endif 2355#endif
1619 2356
1620 if (evpipe [0] >= 0) 2357 if (evpipe [0] >= 0)
1621 { 2358 {
1622 close (evpipe [0]); 2359 EV_WIN32_CLOSE_FD (evpipe [0]);
1623 close (evpipe [1]); 2360 EV_WIN32_CLOSE_FD (evpipe [1]);
1624 } 2361 }
1625 } 2362 }
1626 2363
1627#if EV_USE_SIGNALFD 2364#if EV_USE_SIGNALFD
1628 if (ev_is_active (&sigfd_w)) 2365 if (ev_is_active (&sigfd_w))
1629 {
1630 /*ev_ref (EV_A);*/
1631 /*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633 close (sigfd); 2366 close (sigfd);
1634 }
1635#endif 2367#endif
1636 2368
1637#if EV_USE_INOTIFY 2369#if EV_USE_INOTIFY
1638 if (fs_fd >= 0) 2370 if (fs_fd >= 0)
1639 close (fs_fd); 2371 close (fs_fd);
1640#endif 2372#endif
1641 2373
1642 if (backend_fd >= 0) 2374 if (backend_fd >= 0)
1643 close (backend_fd); 2375 close (backend_fd);
1644 2376
2377#if EV_USE_IOCP
2378 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2379#endif
1645#if EV_USE_PORT 2380#if EV_USE_PORT
1646 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2381 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1647#endif 2382#endif
1648#if EV_USE_KQUEUE 2383#if EV_USE_KQUEUE
1649 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2384 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1676 array_free (periodic, EMPTY); 2411 array_free (periodic, EMPTY);
1677#endif 2412#endif
1678#if EV_FORK_ENABLE 2413#if EV_FORK_ENABLE
1679 array_free (fork, EMPTY); 2414 array_free (fork, EMPTY);
1680#endif 2415#endif
2416#if EV_CLEANUP_ENABLE
2417 array_free (cleanup, EMPTY);
2418#endif
1681 array_free (prepare, EMPTY); 2419 array_free (prepare, EMPTY);
1682 array_free (check, EMPTY); 2420 array_free (check, EMPTY);
1683#if EV_ASYNC_ENABLE 2421#if EV_ASYNC_ENABLE
1684 array_free (async, EMPTY); 2422 array_free (async, EMPTY);
1685#endif 2423#endif
1686 2424
1687 backend = 0; 2425 backend = 0;
2426
2427#if EV_MULTIPLICITY
2428 if (ev_is_default_loop (EV_A))
2429#endif
2430 ev_default_loop_ptr = 0;
2431#if EV_MULTIPLICITY
2432 else
2433 ev_free (EV_A);
2434#endif
1688} 2435}
1689 2436
1690#if EV_USE_INOTIFY 2437#if EV_USE_INOTIFY
1691inline_size void infy_fork (EV_P); 2438inline_size void infy_fork (EV_P);
1692#endif 2439#endif
… …
1707 infy_fork (EV_A); 2454 infy_fork (EV_A);
1708#endif 2455#endif
1709 2456
1710 if (ev_is_active (&pipe_w)) 2457 if (ev_is_active (&pipe_w))
1711 { 2458 {
1712 /* this "locks" the handlers against writing to the pipe */ 2459 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1713 /* while we modify the fd vars */
1714 sig_pending = 1;
1715#if EV_ASYNC_ENABLE
1716 async_pending = 1;
1717#endif
1718 2460
1719 ev_ref (EV_A); 2461 ev_ref (EV_A);
1720 ev_io_stop (EV_A_ &pipe_w); 2462 ev_io_stop (EV_A_ &pipe_w);
1721 2463
1722#if EV_USE_EVENTFD 2464#if EV_USE_EVENTFD
… …
1724 close (evfd); 2466 close (evfd);
1725#endif 2467#endif
1726 2468
1727 if (evpipe [0] >= 0) 2469 if (evpipe [0] >= 0)
1728 { 2470 {
1729 close (evpipe [0]); 2471 EV_WIN32_CLOSE_FD (evpipe [0]);
1730 close (evpipe [1]); 2472 EV_WIN32_CLOSE_FD (evpipe [1]);
1731 } 2473 }
1732 2474
2475#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1733 evpipe_init (EV_A); 2476 evpipe_init (EV_A);
1734 /* now iterate over everything, in case we missed something */ 2477 /* now iterate over everything, in case we missed something */
1735 pipecb (EV_A_ &pipe_w, EV_READ); 2478 pipecb (EV_A_ &pipe_w, EV_READ);
2479#endif
1736 } 2480 }
1737 2481
1738 postfork = 0; 2482 postfork = 0;
1739} 2483}
1740 2484
1741#if EV_MULTIPLICITY 2485#if EV_MULTIPLICITY
1742 2486
1743struct ev_loop * 2487struct ev_loop * ecb_cold
1744ev_loop_new (unsigned int flags) 2488ev_loop_new (unsigned int flags)
1745{ 2489{
1746 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2490 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747 2491
1748 memset (EV_A, 0, sizeof (struct ev_loop)); 2492 memset (EV_A, 0, sizeof (struct ev_loop));
1749 loop_init (EV_A_ flags); 2493 loop_init (EV_A_ flags);
1750 2494
1751 if (ev_backend (EV_A)) 2495 if (ev_backend (EV_A))
1752 return EV_A; 2496 return EV_A;
1753 2497
2498 ev_free (EV_A);
1754 return 0; 2499 return 0;
1755} 2500}
1756 2501
1757void
1758ev_loop_destroy (EV_P)
1759{
1760 loop_destroy (EV_A);
1761 ev_free (loop);
1762}
1763
1764void
1765ev_loop_fork (EV_P)
1766{
1767 postfork = 1; /* must be in line with ev_default_fork */
1768}
1769#endif /* multiplicity */ 2502#endif /* multiplicity */
1770 2503
1771#if EV_VERIFY 2504#if EV_VERIFY
1772static void noinline 2505static void noinline ecb_cold
1773verify_watcher (EV_P_ W w) 2506verify_watcher (EV_P_ W w)
1774{ 2507{
1775 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2508 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1776 2509
1777 if (w->pending) 2510 if (w->pending)
1778 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2511 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1779} 2512}
1780 2513
1781static void noinline 2514static void noinline ecb_cold
1782verify_heap (EV_P_ ANHE *heap, int N) 2515verify_heap (EV_P_ ANHE *heap, int N)
1783{ 2516{
1784 int i; 2517 int i;
1785 2518
1786 for (i = HEAP0; i < N + HEAP0; ++i) 2519 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1791 2524
1792 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2525 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1793 } 2526 }
1794} 2527}
1795 2528
1796static void noinline 2529static void noinline ecb_cold
1797array_verify (EV_P_ W *ws, int cnt) 2530array_verify (EV_P_ W *ws, int cnt)
1798{ 2531{
1799 while (cnt--) 2532 while (cnt--)
1800 { 2533 {
1801 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2534 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1802 verify_watcher (EV_A_ ws [cnt]); 2535 verify_watcher (EV_A_ ws [cnt]);
1803 } 2536 }
1804} 2537}
1805#endif 2538#endif
1806 2539
1807#if EV_MINIMAL < 2 2540#if EV_FEATURE_API
1808void 2541void ecb_cold
1809ev_loop_verify (EV_P) 2542ev_verify (EV_P)
1810{ 2543{
1811#if EV_VERIFY 2544#if EV_VERIFY
1812 int i; 2545 int i;
1813 WL w; 2546 WL w;
1814 2547
… …
1848#if EV_FORK_ENABLE 2581#if EV_FORK_ENABLE
1849 assert (forkmax >= forkcnt); 2582 assert (forkmax >= forkcnt);
1850 array_verify (EV_A_ (W *)forks, forkcnt); 2583 array_verify (EV_A_ (W *)forks, forkcnt);
1851#endif 2584#endif
1852 2585
2586#if EV_CLEANUP_ENABLE
2587 assert (cleanupmax >= cleanupcnt);
2588 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2589#endif
2590
1853#if EV_ASYNC_ENABLE 2591#if EV_ASYNC_ENABLE
1854 assert (asyncmax >= asynccnt); 2592 assert (asyncmax >= asynccnt);
1855 array_verify (EV_A_ (W *)asyncs, asynccnt); 2593 array_verify (EV_A_ (W *)asyncs, asynccnt);
1856#endif 2594#endif
1857 2595
2596#if EV_PREPARE_ENABLE
1858 assert (preparemax >= preparecnt); 2597 assert (preparemax >= preparecnt);
1859 array_verify (EV_A_ (W *)prepares, preparecnt); 2598 array_verify (EV_A_ (W *)prepares, preparecnt);
2599#endif
1860 2600
2601#if EV_CHECK_ENABLE
1861 assert (checkmax >= checkcnt); 2602 assert (checkmax >= checkcnt);
1862 array_verify (EV_A_ (W *)checks, checkcnt); 2603 array_verify (EV_A_ (W *)checks, checkcnt);
2604#endif
1863 2605
1864# if 0 2606# if 0
2607#if EV_CHILD_ENABLE
1865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2608 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1866 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2609 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2610#endif
1867# endif 2611# endif
1868#endif 2612#endif
1869} 2613}
1870#endif 2614#endif
1871 2615
1872#if EV_MULTIPLICITY 2616#if EV_MULTIPLICITY
1873struct ev_loop * 2617struct ev_loop * ecb_cold
1874ev_default_loop_init (unsigned int flags)
1875#else 2618#else
1876int 2619int
2620#endif
1877ev_default_loop (unsigned int flags) 2621ev_default_loop (unsigned int flags)
1878#endif
1879{ 2622{
1880 if (!ev_default_loop_ptr) 2623 if (!ev_default_loop_ptr)
1881 { 2624 {
1882#if EV_MULTIPLICITY 2625#if EV_MULTIPLICITY
1883 EV_P = ev_default_loop_ptr = &default_loop_struct; 2626 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1887 2630
1888 loop_init (EV_A_ flags); 2631 loop_init (EV_A_ flags);
1889 2632
1890 if (ev_backend (EV_A)) 2633 if (ev_backend (EV_A))
1891 { 2634 {
1892#ifndef _WIN32 2635#if EV_CHILD_ENABLE
1893 ev_signal_init (&childev, childcb, SIGCHLD); 2636 ev_signal_init (&childev, childcb, SIGCHLD);
1894 ev_set_priority (&childev, EV_MAXPRI); 2637 ev_set_priority (&childev, EV_MAXPRI);
1895 ev_signal_start (EV_A_ &childev); 2638 ev_signal_start (EV_A_ &childev);
1896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2639 ev_unref (EV_A); /* child watcher should not keep loop alive */
1897#endif 2640#endif
… …
1902 2645
1903 return ev_default_loop_ptr; 2646 return ev_default_loop_ptr;
1904} 2647}
1905 2648
1906void 2649void
1907ev_default_destroy (void) 2650ev_loop_fork (EV_P)
1908{ 2651{
1909#if EV_MULTIPLICITY
1910 EV_P = ev_default_loop_ptr;
1911#endif
1912
1913 ev_default_loop_ptr = 0;
1914
1915#ifndef _WIN32
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918#endif
1919
1920 loop_destroy (EV_A);
1921}
1922
1923void
1924ev_default_fork (void)
1925{
1926#if EV_MULTIPLICITY
1927 EV_P = ev_default_loop_ptr;
1928#endif
1929
1930 postfork = 1; /* must be in line with ev_loop_fork */ 2652 postfork = 1; /* must be in line with ev_default_fork */
1931} 2653}
1932 2654
1933/*****************************************************************************/ 2655/*****************************************************************************/
1934 2656
1935void 2657void
… …
1957 2679
1958 for (pri = NUMPRI; pri--; ) 2680 for (pri = NUMPRI; pri--; )
1959 while (pendingcnt [pri]) 2681 while (pendingcnt [pri])
1960 { 2682 {
1961 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2683 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1962
1963 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1964 /* ^ this is no longer true, as pending_w could be here */
1965 2684
1966 p->w->pending = 0; 2685 p->w->pending = 0;
1967 EV_CB_INVOKE (p->w, p->events); 2686 EV_CB_INVOKE (p->w, p->events);
1968 EV_FREQUENT_CHECK; 2687 EV_FREQUENT_CHECK;
1969 } 2688 }
… …
2026 EV_FREQUENT_CHECK; 2745 EV_FREQUENT_CHECK;
2027 feed_reverse (EV_A_ (W)w); 2746 feed_reverse (EV_A_ (W)w);
2028 } 2747 }
2029 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2748 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2030 2749
2031 feed_reverse_done (EV_A_ EV_TIMEOUT); 2750 feed_reverse_done (EV_A_ EV_TIMER);
2032 } 2751 }
2033} 2752}
2034 2753
2035#if EV_PERIODIC_ENABLE 2754#if EV_PERIODIC_ENABLE
2755
2756static void noinline
2757periodic_recalc (EV_P_ ev_periodic *w)
2758{
2759 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2760 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2761
2762 /* the above almost always errs on the low side */
2763 while (at <= ev_rt_now)
2764 {
2765 ev_tstamp nat = at + w->interval;
2766
2767 /* when resolution fails us, we use ev_rt_now */
2768 if (expect_false (nat == at))
2769 {
2770 at = ev_rt_now;
2771 break;
2772 }
2773
2774 at = nat;
2775 }
2776
2777 ev_at (w) = at;
2778}
2779
2036/* make periodics pending */ 2780/* make periodics pending */
2037inline_size void 2781inline_size void
2038periodics_reify (EV_P) 2782periodics_reify (EV_P)
2039{ 2783{
2040 EV_FREQUENT_CHECK; 2784 EV_FREQUENT_CHECK;
… …
2059 ANHE_at_cache (periodics [HEAP0]); 2803 ANHE_at_cache (periodics [HEAP0]);
2060 downheap (periodics, periodiccnt, HEAP0); 2804 downheap (periodics, periodiccnt, HEAP0);
2061 } 2805 }
2062 else if (w->interval) 2806 else if (w->interval)
2063 { 2807 {
2064 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2808 periodic_recalc (EV_A_ w);
2065 /* if next trigger time is not sufficiently in the future, put it there */
2066 /* this might happen because of floating point inexactness */
2067 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2068 {
2069 ev_at (w) += w->interval;
2070
2071 /* if interval is unreasonably low we might still have a time in the past */
2072 /* so correct this. this will make the periodic very inexact, but the user */
2073 /* has effectively asked to get triggered more often than possible */
2074 if (ev_at (w) < ev_rt_now)
2075 ev_at (w) = ev_rt_now;
2076 }
2077
2078 ANHE_at_cache (periodics [HEAP0]); 2809 ANHE_at_cache (periodics [HEAP0]);
2079 downheap (periodics, periodiccnt, HEAP0); 2810 downheap (periodics, periodiccnt, HEAP0);
2080 } 2811 }
2081 else 2812 else
2082 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2813 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2089 feed_reverse_done (EV_A_ EV_PERIODIC); 2820 feed_reverse_done (EV_A_ EV_PERIODIC);
2090 } 2821 }
2091} 2822}
2092 2823
2093/* simply recalculate all periodics */ 2824/* simply recalculate all periodics */
2094/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2825/* TODO: maybe ensure that at least one event happens when jumping forward? */
2095static void noinline 2826static void noinline ecb_cold
2096periodics_reschedule (EV_P) 2827periodics_reschedule (EV_P)
2097{ 2828{
2098 int i; 2829 int i;
2099 2830
2100 /* adjust periodics after time jump */ 2831 /* adjust periodics after time jump */
… …
2103 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2834 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2104 2835
2105 if (w->reschedule_cb) 2836 if (w->reschedule_cb)
2106 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2837 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2107 else if (w->interval) 2838 else if (w->interval)
2108 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2839 periodic_recalc (EV_A_ w);
2109 2840
2110 ANHE_at_cache (periodics [i]); 2841 ANHE_at_cache (periodics [i]);
2111 } 2842 }
2112 2843
2113 reheap (periodics, periodiccnt); 2844 reheap (periodics, periodiccnt);
2114} 2845}
2115#endif 2846#endif
2116 2847
2117/* adjust all timers by a given offset */ 2848/* adjust all timers by a given offset */
2118static void noinline 2849static void noinline ecb_cold
2119timers_reschedule (EV_P_ ev_tstamp adjust) 2850timers_reschedule (EV_P_ ev_tstamp adjust)
2120{ 2851{
2121 int i; 2852 int i;
2122 2853
2123 for (i = 0; i < timercnt; ++i) 2854 for (i = 0; i < timercnt; ++i)
… …
2127 ANHE_at_cache (*he); 2858 ANHE_at_cache (*he);
2128 } 2859 }
2129} 2860}
2130 2861
2131/* fetch new monotonic and realtime times from the kernel */ 2862/* fetch new monotonic and realtime times from the kernel */
2132/* also detetc if there was a timejump, and act accordingly */ 2863/* also detect if there was a timejump, and act accordingly */
2133inline_speed void 2864inline_speed void
2134time_update (EV_P_ ev_tstamp max_block) 2865time_update (EV_P_ ev_tstamp max_block)
2135{ 2866{
2136#if EV_USE_MONOTONIC 2867#if EV_USE_MONOTONIC
2137 if (expect_true (have_monotonic)) 2868 if (expect_true (have_monotonic))
… …
2160 * doesn't hurt either as we only do this on time-jumps or 2891 * doesn't hurt either as we only do this on time-jumps or
2161 * in the unlikely event of having been preempted here. 2892 * in the unlikely event of having been preempted here.
2162 */ 2893 */
2163 for (i = 4; --i; ) 2894 for (i = 4; --i; )
2164 { 2895 {
2896 ev_tstamp diff;
2165 rtmn_diff = ev_rt_now - mn_now; 2897 rtmn_diff = ev_rt_now - mn_now;
2166 2898
2899 diff = odiff - rtmn_diff;
2900
2167 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2901 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2168 return; /* all is well */ 2902 return; /* all is well */
2169 2903
2170 ev_rt_now = ev_time (); 2904 ev_rt_now = ev_time ();
2171 mn_now = get_clock (); 2905 mn_now = get_clock ();
2172 now_floor = mn_now; 2906 now_floor = mn_now;
… …
2195 mn_now = ev_rt_now; 2929 mn_now = ev_rt_now;
2196 } 2930 }
2197} 2931}
2198 2932
2199void 2933void
2200ev_loop (EV_P_ int flags) 2934ev_run (EV_P_ int flags)
2201{ 2935{
2202#if EV_MINIMAL < 2 2936#if EV_FEATURE_API
2203 ++loop_depth; 2937 ++loop_depth;
2204#endif 2938#endif
2205 2939
2206 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2940 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2207 2941
2208 loop_done = EVUNLOOP_CANCEL; 2942 loop_done = EVBREAK_CANCEL;
2209 2943
2210 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2944 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2211 2945
2212 do 2946 do
2213 { 2947 {
2214#if EV_VERIFY >= 2 2948#if EV_VERIFY >= 2
2215 ev_loop_verify (EV_A); 2949 ev_verify (EV_A);
2216#endif 2950#endif
2217 2951
2218#ifndef _WIN32 2952#ifndef _WIN32
2219 if (expect_false (curpid)) /* penalise the forking check even more */ 2953 if (expect_false (curpid)) /* penalise the forking check even more */
2220 if (expect_false (getpid () != curpid)) 2954 if (expect_false (getpid () != curpid))
… …
2232 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2966 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2233 EV_INVOKE_PENDING; 2967 EV_INVOKE_PENDING;
2234 } 2968 }
2235#endif 2969#endif
2236 2970
2971#if EV_PREPARE_ENABLE
2237 /* queue prepare watchers (and execute them) */ 2972 /* queue prepare watchers (and execute them) */
2238 if (expect_false (preparecnt)) 2973 if (expect_false (preparecnt))
2239 { 2974 {
2240 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2975 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2241 EV_INVOKE_PENDING; 2976 EV_INVOKE_PENDING;
2242 } 2977 }
2978#endif
2243 2979
2244 if (expect_false (loop_done)) 2980 if (expect_false (loop_done))
2245 break; 2981 break;
2246 2982
2247 /* we might have forked, so reify kernel state if necessary */ 2983 /* we might have forked, so reify kernel state if necessary */
… …
2254 /* calculate blocking time */ 2990 /* calculate blocking time */
2255 { 2991 {
2256 ev_tstamp waittime = 0.; 2992 ev_tstamp waittime = 0.;
2257 ev_tstamp sleeptime = 0.; 2993 ev_tstamp sleeptime = 0.;
2258 2994
2995 /* remember old timestamp for io_blocktime calculation */
2996 ev_tstamp prev_mn_now = mn_now;
2997
2998 /* update time to cancel out callback processing overhead */
2999 time_update (EV_A_ 1e100);
3000
3001 /* from now on, we want a pipe-wake-up */
3002 pipe_write_wanted = 1;
3003
3004 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3005
2259 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3006 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2260 { 3007 {
2261 /* remember old timestamp for io_blocktime calculation */
2262 ev_tstamp prev_mn_now = mn_now;
2263
2264 /* update time to cancel out callback processing overhead */
2265 time_update (EV_A_ 1e100);
2266
2267 waittime = MAX_BLOCKTIME; 3008 waittime = MAX_BLOCKTIME;
2268 3009
2269 if (timercnt) 3010 if (timercnt)
2270 { 3011 {
2271 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3012 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2272 if (waittime > to) waittime = to; 3013 if (waittime > to) waittime = to;
2273 } 3014 }
2274 3015
2275#if EV_PERIODIC_ENABLE 3016#if EV_PERIODIC_ENABLE
2276 if (periodiccnt) 3017 if (periodiccnt)
2277 { 3018 {
2278 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3019 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2279 if (waittime > to) waittime = to; 3020 if (waittime > to) waittime = to;
2280 } 3021 }
2281#endif 3022#endif
2282 3023
2283 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3024 /* don't let timeouts decrease the waittime below timeout_blocktime */
2284 if (expect_false (waittime < timeout_blocktime)) 3025 if (expect_false (waittime < timeout_blocktime))
2285 waittime = timeout_blocktime; 3026 waittime = timeout_blocktime;
3027
3028 /* at this point, we NEED to wait, so we have to ensure */
3029 /* to pass a minimum nonzero value to the backend */
3030 if (expect_false (waittime < backend_mintime))
3031 waittime = backend_mintime;
2286 3032
2287 /* extra check because io_blocktime is commonly 0 */ 3033 /* extra check because io_blocktime is commonly 0 */
2288 if (expect_false (io_blocktime)) 3034 if (expect_false (io_blocktime))
2289 { 3035 {
2290 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3036 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2291 3037
2292 if (sleeptime > waittime - backend_fudge) 3038 if (sleeptime > waittime - backend_mintime)
2293 sleeptime = waittime - backend_fudge; 3039 sleeptime = waittime - backend_mintime;
2294 3040
2295 if (expect_true (sleeptime > 0.)) 3041 if (expect_true (sleeptime > 0.))
2296 { 3042 {
2297 ev_sleep (sleeptime); 3043 ev_sleep (sleeptime);
2298 waittime -= sleeptime; 3044 waittime -= sleeptime;
2299 } 3045 }
2300 } 3046 }
2301 } 3047 }
2302 3048
2303#if EV_MINIMAL < 2 3049#if EV_FEATURE_API
2304 ++loop_count; 3050 ++loop_count;
2305#endif 3051#endif
2306 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3052 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2307 backend_poll (EV_A_ waittime); 3053 backend_poll (EV_A_ waittime);
2308 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3054 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3055
3056 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3057
3058 if (pipe_write_skipped)
3059 {
3060 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3061 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3062 }
3063
2309 3064
2310 /* update ev_rt_now, do magic */ 3065 /* update ev_rt_now, do magic */
2311 time_update (EV_A_ waittime + sleeptime); 3066 time_update (EV_A_ waittime + sleeptime);
2312 } 3067 }
2313 3068
… …
2320#if EV_IDLE_ENABLE 3075#if EV_IDLE_ENABLE
2321 /* queue idle watchers unless other events are pending */ 3076 /* queue idle watchers unless other events are pending */
2322 idle_reify (EV_A); 3077 idle_reify (EV_A);
2323#endif 3078#endif
2324 3079
3080#if EV_CHECK_ENABLE
2325 /* queue check watchers, to be executed first */ 3081 /* queue check watchers, to be executed first */
2326 if (expect_false (checkcnt)) 3082 if (expect_false (checkcnt))
2327 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3083 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3084#endif
2328 3085
2329 EV_INVOKE_PENDING; 3086 EV_INVOKE_PENDING;
2330 } 3087 }
2331 while (expect_true ( 3088 while (expect_true (
2332 activecnt 3089 activecnt
2333 && !loop_done 3090 && !loop_done
2334 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3091 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2335 )); 3092 ));
2336 3093
2337 if (loop_done == EVUNLOOP_ONE) 3094 if (loop_done == EVBREAK_ONE)
2338 loop_done = EVUNLOOP_CANCEL; 3095 loop_done = EVBREAK_CANCEL;
2339 3096
2340#if EV_MINIMAL < 2 3097#if EV_FEATURE_API
2341 --loop_depth; 3098 --loop_depth;
2342#endif 3099#endif
2343} 3100}
2344 3101
2345void 3102void
2346ev_unloop (EV_P_ int how) 3103ev_break (EV_P_ int how)
2347{ 3104{
2348 loop_done = how; 3105 loop_done = how;
2349} 3106}
2350 3107
2351void 3108void
… …
2471 3228
2472 if (expect_false (ev_is_active (w))) 3229 if (expect_false (ev_is_active (w)))
2473 return; 3230 return;
2474 3231
2475 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3232 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3233 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2477 3234
2478 EV_FREQUENT_CHECK; 3235 EV_FREQUENT_CHECK;
2479 3236
2480 ev_start (EV_A_ (W)w, 1); 3237 ev_start (EV_A_ (W)w, 1);
2481 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3238 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2499 EV_FREQUENT_CHECK; 3256 EV_FREQUENT_CHECK;
2500 3257
2501 wlist_del (&anfds[w->fd].head, (WL)w); 3258 wlist_del (&anfds[w->fd].head, (WL)w);
2502 ev_stop (EV_A_ (W)w); 3259 ev_stop (EV_A_ (W)w);
2503 3260
2504 fd_change (EV_A_ w->fd, 1); 3261 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2505 3262
2506 EV_FREQUENT_CHECK; 3263 EV_FREQUENT_CHECK;
2507} 3264}
2508 3265
2509void noinline 3266void noinline
… …
2551 timers [active] = timers [timercnt + HEAP0]; 3308 timers [active] = timers [timercnt + HEAP0];
2552 adjustheap (timers, timercnt, active); 3309 adjustheap (timers, timercnt, active);
2553 } 3310 }
2554 } 3311 }
2555 3312
2556 EV_FREQUENT_CHECK;
2557
2558 ev_at (w) -= mn_now; 3313 ev_at (w) -= mn_now;
2559 3314
2560 ev_stop (EV_A_ (W)w); 3315 ev_stop (EV_A_ (W)w);
3316
3317 EV_FREQUENT_CHECK;
2561} 3318}
2562 3319
2563void noinline 3320void noinline
2564ev_timer_again (EV_P_ ev_timer *w) 3321ev_timer_again (EV_P_ ev_timer *w)
2565{ 3322{
2566 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
3324
3325 clear_pending (EV_A_ (W)w);
2567 3326
2568 if (ev_is_active (w)) 3327 if (ev_is_active (w))
2569 { 3328 {
2570 if (w->repeat) 3329 if (w->repeat)
2571 { 3330 {
… …
2601 if (w->reschedule_cb) 3360 if (w->reschedule_cb)
2602 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3361 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2603 else if (w->interval) 3362 else if (w->interval)
2604 { 3363 {
2605 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3364 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2606 /* this formula differs from the one in periodic_reify because we do not always round up */ 3365 periodic_recalc (EV_A_ w);
2607 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2608 } 3366 }
2609 else 3367 else
2610 ev_at (w) = w->offset; 3368 ev_at (w) = w->offset;
2611 3369
2612 EV_FREQUENT_CHECK; 3370 EV_FREQUENT_CHECK;
… …
2644 periodics [active] = periodics [periodiccnt + HEAP0]; 3402 periodics [active] = periodics [periodiccnt + HEAP0];
2645 adjustheap (periodics, periodiccnt, active); 3403 adjustheap (periodics, periodiccnt, active);
2646 } 3404 }
2647 } 3405 }
2648 3406
2649 EV_FREQUENT_CHECK;
2650
2651 ev_stop (EV_A_ (W)w); 3407 ev_stop (EV_A_ (W)w);
3408
3409 EV_FREQUENT_CHECK;
2652} 3410}
2653 3411
2654void noinline 3412void noinline
2655ev_periodic_again (EV_P_ ev_periodic *w) 3413ev_periodic_again (EV_P_ ev_periodic *w)
2656{ 3414{
… …
2661#endif 3419#endif
2662 3420
2663#ifndef SA_RESTART 3421#ifndef SA_RESTART
2664# define SA_RESTART 0 3422# define SA_RESTART 0
2665#endif 3423#endif
3424
3425#if EV_SIGNAL_ENABLE
2666 3426
2667void noinline 3427void noinline
2668ev_signal_start (EV_P_ ev_signal *w) 3428ev_signal_start (EV_P_ ev_signal *w)
2669{ 3429{
2670 if (expect_false (ev_is_active (w))) 3430 if (expect_false (ev_is_active (w)))
… …
2717 if (!((WL)w)->next) 3477 if (!((WL)w)->next)
2718# if EV_USE_SIGNALFD 3478# if EV_USE_SIGNALFD
2719 if (sigfd < 0) /*TODO*/ 3479 if (sigfd < 0) /*TODO*/
2720# endif 3480# endif
2721 { 3481 {
2722# if _WIN32 3482# ifdef _WIN32
3483 evpipe_init (EV_A);
3484
2723 signal (w->signum, ev_sighandler); 3485 signal (w->signum, ev_sighandler);
2724# else 3486# else
2725 struct sigaction sa; 3487 struct sigaction sa;
2726 3488
2727 evpipe_init (EV_A); 3489 evpipe_init (EV_A);
… …
2729 sa.sa_handler = ev_sighandler; 3491 sa.sa_handler = ev_sighandler;
2730 sigfillset (&sa.sa_mask); 3492 sigfillset (&sa.sa_mask);
2731 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3493 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2732 sigaction (w->signum, &sa, 0); 3494 sigaction (w->signum, &sa, 0);
2733 3495
3496 if (origflags & EVFLAG_NOSIGMASK)
3497 {
2734 sigemptyset (&sa.sa_mask); 3498 sigemptyset (&sa.sa_mask);
2735 sigaddset (&sa.sa_mask, w->signum); 3499 sigaddset (&sa.sa_mask, w->signum);
2736 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3500 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3501 }
2737#endif 3502#endif
2738 } 3503 }
2739 3504
2740 EV_FREQUENT_CHECK; 3505 EV_FREQUENT_CHECK;
2741} 3506}
… …
2758 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3523 signals [w->signum - 1].loop = 0; /* unattach from signal */
2759#endif 3524#endif
2760#if EV_USE_SIGNALFD 3525#if EV_USE_SIGNALFD
2761 if (sigfd >= 0) 3526 if (sigfd >= 0)
2762 { 3527 {
2763 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3528 sigset_t ss;
3529
3530 sigemptyset (&ss);
3531 sigaddset (&ss, w->signum);
2764 sigdelset (&sigfd_set, w->signum); 3532 sigdelset (&sigfd_set, w->signum);
3533
2765 signalfd (sigfd, &sigfd_set, 0); 3534 signalfd (sigfd, &sigfd_set, 0);
2766 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3535 sigprocmask (SIG_UNBLOCK, &ss, 0);
2767 /*TODO: maybe unblock signal? */
2768 } 3536 }
2769 else 3537 else
2770#endif 3538#endif
2771 signal (w->signum, SIG_DFL); 3539 signal (w->signum, SIG_DFL);
2772 } 3540 }
2773 3541
2774 EV_FREQUENT_CHECK; 3542 EV_FREQUENT_CHECK;
2775} 3543}
2776 3544
3545#endif
3546
3547#if EV_CHILD_ENABLE
3548
2777void 3549void
2778ev_child_start (EV_P_ ev_child *w) 3550ev_child_start (EV_P_ ev_child *w)
2779{ 3551{
2780#if EV_MULTIPLICITY 3552#if EV_MULTIPLICITY
2781 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3553 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
… …
2784 return; 3556 return;
2785 3557
2786 EV_FREQUENT_CHECK; 3558 EV_FREQUENT_CHECK;
2787 3559
2788 ev_start (EV_A_ (W)w, 1); 3560 ev_start (EV_A_ (W)w, 1);
2789 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3561 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2790 3562
2791 EV_FREQUENT_CHECK; 3563 EV_FREQUENT_CHECK;
2792} 3564}
2793 3565
2794void 3566void
… …
2798 if (expect_false (!ev_is_active (w))) 3570 if (expect_false (!ev_is_active (w)))
2799 return; 3571 return;
2800 3572
2801 EV_FREQUENT_CHECK; 3573 EV_FREQUENT_CHECK;
2802 3574
2803 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3575 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2804 ev_stop (EV_A_ (W)w); 3576 ev_stop (EV_A_ (W)w);
2805 3577
2806 EV_FREQUENT_CHECK; 3578 EV_FREQUENT_CHECK;
2807} 3579}
3580
3581#endif
2808 3582
2809#if EV_STAT_ENABLE 3583#if EV_STAT_ENABLE
2810 3584
2811# ifdef _WIN32 3585# ifdef _WIN32
2812# undef lstat 3586# undef lstat
… …
2818#define MIN_STAT_INTERVAL 0.1074891 3592#define MIN_STAT_INTERVAL 0.1074891
2819 3593
2820static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3594static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2821 3595
2822#if EV_USE_INOTIFY 3596#if EV_USE_INOTIFY
2823# define EV_INOTIFY_BUFSIZE 8192 3597
3598/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3599# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2824 3600
2825static void noinline 3601static void noinline
2826infy_add (EV_P_ ev_stat *w) 3602infy_add (EV_P_ ev_stat *w)
2827{ 3603{
2828 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); 3604 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);
2829 3605
2830 if (w->wd < 0) 3606 if (w->wd >= 0)
3607 {
3608 struct statfs sfs;
3609
3610 /* now local changes will be tracked by inotify, but remote changes won't */
3611 /* unless the filesystem is known to be local, we therefore still poll */
3612 /* also do poll on <2.6.25, but with normal frequency */
3613
3614 if (!fs_2625)
3615 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3616 else if (!statfs (w->path, &sfs)
3617 && (sfs.f_type == 0x1373 /* devfs */
3618 || sfs.f_type == 0xEF53 /* ext2/3 */
3619 || sfs.f_type == 0x3153464a /* jfs */
3620 || sfs.f_type == 0x52654973 /* reiser3 */
3621 || sfs.f_type == 0x01021994 /* tempfs */
3622 || sfs.f_type == 0x58465342 /* xfs */))
3623 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3624 else
3625 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2831 { 3626 }
3627 else
3628 {
3629 /* can't use inotify, continue to stat */
2832 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3630 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2833 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2834 3631
2835 /* monitor some parent directory for speedup hints */ 3632 /* if path is not there, monitor some parent directory for speedup hints */
2836 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3633 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2837 /* but an efficiency issue only */ 3634 /* but an efficiency issue only */
2838 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3635 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2839 { 3636 {
2840 char path [4096]; 3637 char path [4096];
… …
2850 if (!pend || pend == path) 3647 if (!pend || pend == path)
2851 break; 3648 break;
2852 3649
2853 *pend = 0; 3650 *pend = 0;
2854 w->wd = inotify_add_watch (fs_fd, path, mask); 3651 w->wd = inotify_add_watch (fs_fd, path, mask);
2855 } 3652 }
2856 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3653 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2857 } 3654 }
2858 } 3655 }
2859 3656
2860 if (w->wd >= 0) 3657 if (w->wd >= 0)
2861 {
2862 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3658 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2863 3659
2864 /* now local changes will be tracked by inotify, but remote changes won't */ 3660 /* now re-arm timer, if required */
2865 /* unless the filesystem it known to be local, we therefore still poll */ 3661 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2866 /* also do poll on <2.6.25, but with normal frequency */
2867 struct statfs sfs;
2868
2869 if (fs_2625 && !statfs (w->path, &sfs))
2870 if (sfs.f_type == 0x1373 /* devfs */
2871 || sfs.f_type == 0xEF53 /* ext2/3 */
2872 || sfs.f_type == 0x3153464a /* jfs */
2873 || sfs.f_type == 0x52654973 /* reiser3 */
2874 || sfs.f_type == 0x01021994 /* tempfs */
2875 || sfs.f_type == 0x58465342 /* xfs */)
2876 return;
2877
2878 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2879 ev_timer_again (EV_A_ &w->timer); 3662 ev_timer_again (EV_A_ &w->timer);
2880 } 3663 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2881} 3664}
2882 3665
2883static void noinline 3666static void noinline
2884infy_del (EV_P_ ev_stat *w) 3667infy_del (EV_P_ ev_stat *w)
2885{ 3668{
… …
2888 3671
2889 if (wd < 0) 3672 if (wd < 0)
2890 return; 3673 return;
2891 3674
2892 w->wd = -2; 3675 w->wd = -2;
2893 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3676 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2894 wlist_del (&fs_hash [slot].head, (WL)w); 3677 wlist_del (&fs_hash [slot].head, (WL)w);
2895 3678
2896 /* remove this watcher, if others are watching it, they will rearm */ 3679 /* remove this watcher, if others are watching it, they will rearm */
2897 inotify_rm_watch (fs_fd, wd); 3680 inotify_rm_watch (fs_fd, wd);
2898} 3681}
… …
2900static void noinline 3683static void noinline
2901infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3684infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2902{ 3685{
2903 if (slot < 0) 3686 if (slot < 0)
2904 /* overflow, need to check for all hash slots */ 3687 /* overflow, need to check for all hash slots */
2905 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3688 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2906 infy_wd (EV_A_ slot, wd, ev); 3689 infy_wd (EV_A_ slot, wd, ev);
2907 else 3690 else
2908 { 3691 {
2909 WL w_; 3692 WL w_;
2910 3693
2911 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3694 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2912 { 3695 {
2913 ev_stat *w = (ev_stat *)w_; 3696 ev_stat *w = (ev_stat *)w_;
2914 w_ = w_->next; /* lets us remove this watcher and all before it */ 3697 w_ = w_->next; /* lets us remove this watcher and all before it */
2915 3698
2916 if (w->wd == wd || wd == -1) 3699 if (w->wd == wd || wd == -1)
2917 { 3700 {
2918 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3701 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2919 { 3702 {
2920 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3703 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2921 w->wd = -1; 3704 w->wd = -1;
2922 infy_add (EV_A_ w); /* re-add, no matter what */ 3705 infy_add (EV_A_ w); /* re-add, no matter what */
2923 } 3706 }
2924 3707
2925 stat_timer_cb (EV_A_ &w->timer, 0); 3708 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2930 3713
2931static void 3714static void
2932infy_cb (EV_P_ ev_io *w, int revents) 3715infy_cb (EV_P_ ev_io *w, int revents)
2933{ 3716{
2934 char buf [EV_INOTIFY_BUFSIZE]; 3717 char buf [EV_INOTIFY_BUFSIZE];
2935 struct inotify_event *ev = (struct inotify_event *)buf;
2936 int ofs; 3718 int ofs;
2937 int len = read (fs_fd, buf, sizeof (buf)); 3719 int len = read (fs_fd, buf, sizeof (buf));
2938 3720
2939 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3721 for (ofs = 0; ofs < len; )
3722 {
3723 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2940 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3724 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3725 ofs += sizeof (struct inotify_event) + ev->len;
3726 }
2941} 3727}
2942 3728
2943inline_size void 3729inline_size void ecb_cold
2944check_2625 (EV_P) 3730ev_check_2625 (EV_P)
2945{ 3731{
2946 /* kernels < 2.6.25 are borked 3732 /* kernels < 2.6.25 are borked
2947 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3733 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2948 */ 3734 */
2949 struct utsname buf; 3735 if (ev_linux_version () < 0x020619)
2950 int major, minor, micro;
2951
2952 if (uname (&buf))
2953 return; 3736 return;
2954 3737
2955 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2956 return;
2957
2958 if (major < 2
2959 || (major == 2 && minor < 6)
2960 || (major == 2 && minor == 6 && micro < 25))
2961 return;
2962
2963 fs_2625 = 1; 3738 fs_2625 = 1;
3739}
3740
3741inline_size int
3742infy_newfd (void)
3743{
3744#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3745 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3746 if (fd >= 0)
3747 return fd;
3748#endif
3749 return inotify_init ();
2964} 3750}
2965 3751
2966inline_size void 3752inline_size void
2967infy_init (EV_P) 3753infy_init (EV_P)
2968{ 3754{
2969 if (fs_fd != -2) 3755 if (fs_fd != -2)
2970 return; 3756 return;
2971 3757
2972 fs_fd = -1; 3758 fs_fd = -1;
2973 3759
2974 check_2625 (EV_A); 3760 ev_check_2625 (EV_A);
2975 3761
2976 fs_fd = inotify_init (); 3762 fs_fd = infy_newfd ();
2977 3763
2978 if (fs_fd >= 0) 3764 if (fs_fd >= 0)
2979 { 3765 {
3766 fd_intern (fs_fd);
2980 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3767 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2981 ev_set_priority (&fs_w, EV_MAXPRI); 3768 ev_set_priority (&fs_w, EV_MAXPRI);
2982 ev_io_start (EV_A_ &fs_w); 3769 ev_io_start (EV_A_ &fs_w);
3770 ev_unref (EV_A);
2983 } 3771 }
2984} 3772}
2985 3773
2986inline_size void 3774inline_size void
2987infy_fork (EV_P) 3775infy_fork (EV_P)
… …
2989 int slot; 3777 int slot;
2990 3778
2991 if (fs_fd < 0) 3779 if (fs_fd < 0)
2992 return; 3780 return;
2993 3781
3782 ev_ref (EV_A);
3783 ev_io_stop (EV_A_ &fs_w);
2994 close (fs_fd); 3784 close (fs_fd);
2995 fs_fd = inotify_init (); 3785 fs_fd = infy_newfd ();
2996 3786
3787 if (fs_fd >= 0)
3788 {
3789 fd_intern (fs_fd);
3790 ev_io_set (&fs_w, fs_fd, EV_READ);
3791 ev_io_start (EV_A_ &fs_w);
3792 ev_unref (EV_A);
3793 }
3794
2997 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3795 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2998 { 3796 {
2999 WL w_ = fs_hash [slot].head; 3797 WL w_ = fs_hash [slot].head;
3000 fs_hash [slot].head = 0; 3798 fs_hash [slot].head = 0;
3001 3799
3002 while (w_) 3800 while (w_)
… …
3007 w->wd = -1; 3805 w->wd = -1;
3008 3806
3009 if (fs_fd >= 0) 3807 if (fs_fd >= 0)
3010 infy_add (EV_A_ w); /* re-add, no matter what */ 3808 infy_add (EV_A_ w); /* re-add, no matter what */
3011 else 3809 else
3810 {
3811 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3812 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3012 ev_timer_again (EV_A_ &w->timer); 3813 ev_timer_again (EV_A_ &w->timer);
3814 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3815 }
3013 } 3816 }
3014 } 3817 }
3015} 3818}
3016 3819
3017#endif 3820#endif
… …
3034static void noinline 3837static void noinline
3035stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3838stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3036{ 3839{
3037 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3840 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3038 3841
3039 /* we copy this here each the time so that */ 3842 ev_statdata prev = w->attr;
3040 /* prev has the old value when the callback gets invoked */
3041 w->prev = w->attr;
3042 ev_stat_stat (EV_A_ w); 3843 ev_stat_stat (EV_A_ w);
3043 3844
3044 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3845 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3045 if ( 3846 if (
3046 w->prev.st_dev != w->attr.st_dev 3847 prev.st_dev != w->attr.st_dev
3047 || w->prev.st_ino != w->attr.st_ino 3848 || prev.st_ino != w->attr.st_ino
3048 || w->prev.st_mode != w->attr.st_mode 3849 || prev.st_mode != w->attr.st_mode
3049 || w->prev.st_nlink != w->attr.st_nlink 3850 || prev.st_nlink != w->attr.st_nlink
3050 || w->prev.st_uid != w->attr.st_uid 3851 || prev.st_uid != w->attr.st_uid
3051 || w->prev.st_gid != w->attr.st_gid 3852 || prev.st_gid != w->attr.st_gid
3052 || w->prev.st_rdev != w->attr.st_rdev 3853 || prev.st_rdev != w->attr.st_rdev
3053 || w->prev.st_size != w->attr.st_size 3854 || prev.st_size != w->attr.st_size
3054 || w->prev.st_atime != w->attr.st_atime 3855 || prev.st_atime != w->attr.st_atime
3055 || w->prev.st_mtime != w->attr.st_mtime 3856 || prev.st_mtime != w->attr.st_mtime
3056 || w->prev.st_ctime != w->attr.st_ctime 3857 || prev.st_ctime != w->attr.st_ctime
3057 ) { 3858 ) {
3859 /* we only update w->prev on actual differences */
3860 /* in case we test more often than invoke the callback, */
3861 /* to ensure that prev is always different to attr */
3862 w->prev = prev;
3863
3058 #if EV_USE_INOTIFY 3864 #if EV_USE_INOTIFY
3059 if (fs_fd >= 0) 3865 if (fs_fd >= 0)
3060 { 3866 {
3061 infy_del (EV_A_ w); 3867 infy_del (EV_A_ w);
3062 infy_add (EV_A_ w); 3868 infy_add (EV_A_ w);
… …
3087 3893
3088 if (fs_fd >= 0) 3894 if (fs_fd >= 0)
3089 infy_add (EV_A_ w); 3895 infy_add (EV_A_ w);
3090 else 3896 else
3091#endif 3897#endif
3898 {
3092 ev_timer_again (EV_A_ &w->timer); 3899 ev_timer_again (EV_A_ &w->timer);
3900 ev_unref (EV_A);
3901 }
3093 3902
3094 ev_start (EV_A_ (W)w, 1); 3903 ev_start (EV_A_ (W)w, 1);
3095 3904
3096 EV_FREQUENT_CHECK; 3905 EV_FREQUENT_CHECK;
3097} 3906}
… …
3106 EV_FREQUENT_CHECK; 3915 EV_FREQUENT_CHECK;
3107 3916
3108#if EV_USE_INOTIFY 3917#if EV_USE_INOTIFY
3109 infy_del (EV_A_ w); 3918 infy_del (EV_A_ w);
3110#endif 3919#endif
3920
3921 if (ev_is_active (&w->timer))
3922 {
3923 ev_ref (EV_A);
3111 ev_timer_stop (EV_A_ &w->timer); 3924 ev_timer_stop (EV_A_ &w->timer);
3925 }
3112 3926
3113 ev_stop (EV_A_ (W)w); 3927 ev_stop (EV_A_ (W)w);
3114 3928
3115 EV_FREQUENT_CHECK; 3929 EV_FREQUENT_CHECK;
3116} 3930}
… …
3161 3975
3162 EV_FREQUENT_CHECK; 3976 EV_FREQUENT_CHECK;
3163} 3977}
3164#endif 3978#endif
3165 3979
3980#if EV_PREPARE_ENABLE
3166void 3981void
3167ev_prepare_start (EV_P_ ev_prepare *w) 3982ev_prepare_start (EV_P_ ev_prepare *w)
3168{ 3983{
3169 if (expect_false (ev_is_active (w))) 3984 if (expect_false (ev_is_active (w)))
3170 return; 3985 return;
… …
3196 4011
3197 ev_stop (EV_A_ (W)w); 4012 ev_stop (EV_A_ (W)w);
3198 4013
3199 EV_FREQUENT_CHECK; 4014 EV_FREQUENT_CHECK;
3200} 4015}
4016#endif
3201 4017
4018#if EV_CHECK_ENABLE
3202void 4019void
3203ev_check_start (EV_P_ ev_check *w) 4020ev_check_start (EV_P_ ev_check *w)
3204{ 4021{
3205 if (expect_false (ev_is_active (w))) 4022 if (expect_false (ev_is_active (w)))
3206 return; 4023 return;
… …
3232 4049
3233 ev_stop (EV_A_ (W)w); 4050 ev_stop (EV_A_ (W)w);
3234 4051
3235 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
3236} 4053}
4054#endif
3237 4055
3238#if EV_EMBED_ENABLE 4056#if EV_EMBED_ENABLE
3239void noinline 4057void noinline
3240ev_embed_sweep (EV_P_ ev_embed *w) 4058ev_embed_sweep (EV_P_ ev_embed *w)
3241{ 4059{
3242 ev_loop (w->other, EVLOOP_NONBLOCK); 4060 ev_run (w->other, EVRUN_NOWAIT);
3243} 4061}
3244 4062
3245static void 4063static void
3246embed_io_cb (EV_P_ ev_io *io, int revents) 4064embed_io_cb (EV_P_ ev_io *io, int revents)
3247{ 4065{
3248 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4066 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3249 4067
3250 if (ev_cb (w)) 4068 if (ev_cb (w))
3251 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4069 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3252 else 4070 else
3253 ev_loop (w->other, EVLOOP_NONBLOCK); 4071 ev_run (w->other, EVRUN_NOWAIT);
3254} 4072}
3255 4073
3256static void 4074static void
3257embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4075embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3258{ 4076{
… …
3262 EV_P = w->other; 4080 EV_P = w->other;
3263 4081
3264 while (fdchangecnt) 4082 while (fdchangecnt)
3265 { 4083 {
3266 fd_reify (EV_A); 4084 fd_reify (EV_A);
3267 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4085 ev_run (EV_A_ EVRUN_NOWAIT);
3268 } 4086 }
3269 } 4087 }
3270} 4088}
3271 4089
3272static void 4090static void
… …
3278 4096
3279 { 4097 {
3280 EV_P = w->other; 4098 EV_P = w->other;
3281 4099
3282 ev_loop_fork (EV_A); 4100 ev_loop_fork (EV_A);
3283 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4101 ev_run (EV_A_ EVRUN_NOWAIT);
3284 } 4102 }
3285 4103
3286 ev_embed_start (EV_A_ w); 4104 ev_embed_start (EV_A_ w);
3287} 4105}
3288 4106
… …
3336 4154
3337 ev_io_stop (EV_A_ &w->io); 4155 ev_io_stop (EV_A_ &w->io);
3338 ev_prepare_stop (EV_A_ &w->prepare); 4156 ev_prepare_stop (EV_A_ &w->prepare);
3339 ev_fork_stop (EV_A_ &w->fork); 4157 ev_fork_stop (EV_A_ &w->fork);
3340 4158
4159 ev_stop (EV_A_ (W)w);
4160
3341 EV_FREQUENT_CHECK; 4161 EV_FREQUENT_CHECK;
3342} 4162}
3343#endif 4163#endif
3344 4164
3345#if EV_FORK_ENABLE 4165#if EV_FORK_ENABLE
… …
3378 4198
3379 EV_FREQUENT_CHECK; 4199 EV_FREQUENT_CHECK;
3380} 4200}
3381#endif 4201#endif
3382 4202
4203#if EV_CLEANUP_ENABLE
4204void
4205ev_cleanup_start (EV_P_ ev_cleanup *w)
4206{
4207 if (expect_false (ev_is_active (w)))
4208 return;
4209
4210 EV_FREQUENT_CHECK;
4211
4212 ev_start (EV_A_ (W)w, ++cleanupcnt);
4213 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4214 cleanups [cleanupcnt - 1] = w;
4215
4216 /* cleanup watchers should never keep a refcount on the loop */
4217 ev_unref (EV_A);
4218 EV_FREQUENT_CHECK;
4219}
4220
4221void
4222ev_cleanup_stop (EV_P_ ev_cleanup *w)
4223{
4224 clear_pending (EV_A_ (W)w);
4225 if (expect_false (!ev_is_active (w)))
4226 return;
4227
4228 EV_FREQUENT_CHECK;
4229 ev_ref (EV_A);
4230
4231 {
4232 int active = ev_active (w);
4233
4234 cleanups [active - 1] = cleanups [--cleanupcnt];
4235 ev_active (cleanups [active - 1]) = active;
4236 }
4237
4238 ev_stop (EV_A_ (W)w);
4239
4240 EV_FREQUENT_CHECK;
4241}
4242#endif
4243
3383#if EV_ASYNC_ENABLE 4244#if EV_ASYNC_ENABLE
3384void 4245void
3385ev_async_start (EV_P_ ev_async *w) 4246ev_async_start (EV_P_ ev_async *w)
3386{ 4247{
3387 if (expect_false (ev_is_active (w))) 4248 if (expect_false (ev_is_active (w)))
3388 return; 4249 return;
4250
4251 w->sent = 0;
3389 4252
3390 evpipe_init (EV_A); 4253 evpipe_init (EV_A);
3391 4254
3392 EV_FREQUENT_CHECK; 4255 EV_FREQUENT_CHECK;
3393 4256
… …
3471{ 4334{
3472 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4335 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3473 4336
3474 if (expect_false (!once)) 4337 if (expect_false (!once))
3475 { 4338 {
3476 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4339 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3477 return; 4340 return;
3478 } 4341 }
3479 4342
3480 once->cb = cb; 4343 once->cb = cb;
3481 once->arg = arg; 4344 once->arg = arg;
… …
3496} 4359}
3497 4360
3498/*****************************************************************************/ 4361/*****************************************************************************/
3499 4362
3500#if EV_WALK_ENABLE 4363#if EV_WALK_ENABLE
3501void 4364void ecb_cold
3502ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4365ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3503{ 4366{
3504 int i, j; 4367 int i, j;
3505 ev_watcher_list *wl, *wn; 4368 ev_watcher_list *wl, *wn;
3506 4369
… …
3550 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4413 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3551#endif 4414#endif
3552 4415
3553#if EV_IDLE_ENABLE 4416#if EV_IDLE_ENABLE
3554 if (types & EV_IDLE) 4417 if (types & EV_IDLE)
3555 for (j = NUMPRI; i--; ) 4418 for (j = NUMPRI; j--; )
3556 for (i = idlecnt [j]; i--; ) 4419 for (i = idlecnt [j]; i--; )
3557 cb (EV_A_ EV_IDLE, idles [j][i]); 4420 cb (EV_A_ EV_IDLE, idles [j][i]);
3558#endif 4421#endif
3559 4422
3560#if EV_FORK_ENABLE 4423#if EV_FORK_ENABLE
… …
3568 if (types & EV_ASYNC) 4431 if (types & EV_ASYNC)
3569 for (i = asynccnt; i--; ) 4432 for (i = asynccnt; i--; )
3570 cb (EV_A_ EV_ASYNC, asyncs [i]); 4433 cb (EV_A_ EV_ASYNC, asyncs [i]);
3571#endif 4434#endif
3572 4435
4436#if EV_PREPARE_ENABLE
3573 if (types & EV_PREPARE) 4437 if (types & EV_PREPARE)
3574 for (i = preparecnt; i--; ) 4438 for (i = preparecnt; i--; )
3575#if EV_EMBED_ENABLE 4439# if EV_EMBED_ENABLE
3576 if (ev_cb (prepares [i]) != embed_prepare_cb) 4440 if (ev_cb (prepares [i]) != embed_prepare_cb)
3577#endif 4441# endif
3578 cb (EV_A_ EV_PREPARE, prepares [i]); 4442 cb (EV_A_ EV_PREPARE, prepares [i]);
4443#endif
3579 4444
4445#if EV_CHECK_ENABLE
3580 if (types & EV_CHECK) 4446 if (types & EV_CHECK)
3581 for (i = checkcnt; i--; ) 4447 for (i = checkcnt; i--; )
3582 cb (EV_A_ EV_CHECK, checks [i]); 4448 cb (EV_A_ EV_CHECK, checks [i]);
4449#endif
3583 4450
4451#if EV_SIGNAL_ENABLE
3584 if (types & EV_SIGNAL) 4452 if (types & EV_SIGNAL)
3585 for (i = 0; i < EV_NSIG - 1; ++i) 4453 for (i = 0; i < EV_NSIG - 1; ++i)
3586 for (wl = signals [i].head; wl; ) 4454 for (wl = signals [i].head; wl; )
3587 { 4455 {
3588 wn = wl->next; 4456 wn = wl->next;
3589 cb (EV_A_ EV_SIGNAL, wl); 4457 cb (EV_A_ EV_SIGNAL, wl);
3590 wl = wn; 4458 wl = wn;
3591 } 4459 }
4460#endif
3592 4461
4462#if EV_CHILD_ENABLE
3593 if (types & EV_CHILD) 4463 if (types & EV_CHILD)
3594 for (i = EV_PID_HASHSIZE; i--; ) 4464 for (i = (EV_PID_HASHSIZE); i--; )
3595 for (wl = childs [i]; wl; ) 4465 for (wl = childs [i]; wl; )
3596 { 4466 {
3597 wn = wl->next; 4467 wn = wl->next;
3598 cb (EV_A_ EV_CHILD, wl); 4468 cb (EV_A_ EV_CHILD, wl);
3599 wl = wn; 4469 wl = wn;
3600 } 4470 }
4471#endif
3601/* EV_STAT 0x00001000 /* stat data changed */ 4472/* EV_STAT 0x00001000 /* stat data changed */
3602/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4473/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3603} 4474}
3604#endif 4475#endif
3605 4476
3606#if EV_MULTIPLICITY 4477#if EV_MULTIPLICITY
3607 #include "ev_wrap.h" 4478 #include "ev_wrap.h"
3608#endif 4479#endif
3609 4480
3610#ifdef __cplusplus
3611}
3612#endif
3613

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