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Comparing libev/ev.c (file contents):
Revision 1.316 by root, Fri Sep 18 21:02:12 2009 UTC vs.
Revision 1.410 by root, Sat Feb 4 17:57:55 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__ >= 7)) 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
… …
392# define EFD_CLOEXEC O_CLOEXEC 427# define EFD_CLOEXEC O_CLOEXEC
393# else 428# else
394# define EFD_CLOEXEC 02000000 429# define EFD_CLOEXEC 02000000
395# endif 430# endif
396# endif 431# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags); 432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif 433#endif
405 434
406#if EV_USE_SIGNALFD 435#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h> 437# include <stdint.h>
… …
414# define SFD_CLOEXEC O_CLOEXEC 443# define SFD_CLOEXEC O_CLOEXEC
415# else 444# else
416# define SFD_CLOEXEC 02000000 445# define SFD_CLOEXEC 02000000
417# endif 446# endif
418# endif 447# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags); 448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
423 449
424struct signalfd_siginfo 450struct signalfd_siginfo
425{ 451{
426 uint32_t ssi_signo; 452 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)]; 453 char pad[128 - sizeof (uint32_t)];
428}; 454};
429# ifdef __cplusplus
430}
431# endif 455#endif
432#endif
433
434 456
435/**/ 457/**/
436 458
437#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
439#else 461#else
440# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
441#endif 463#endif
442 464
443/* 465/*
444 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
445 * It is added to ev_rt_now when scheduling periodics
446 * to ensure progress, time-wise, even when rounding
447 * errors are against us.
448 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
449 * Better solutions welcome.
450 */ 468 */
451#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 */
452 471
453#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) */
454#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) */
455 474
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;
456#if __GNUC__ >= 4 519 #if __GNUC__
457# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
458# 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
459#else 526#else
460# define expect(expr,value) (expr) 527 #include <inttypes.h>
461# define noinline
462# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
463# define inline
464# 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)))
465#endif 542 #endif
543#endif
466 544
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 #endif
583 #endif
584#endif
585
586#ifndef ECB_MEMORY_FENCE
587 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
588 #define ECB_MEMORY_FENCE __sync_synchronize ()
589 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
590 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
591 #elif _MSC_VER >= 1400 /* VC++ 2005 */
592 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
593 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
594 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
595 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
596 #elif defined(_WIN32)
597 #include <WinNT.h>
598 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
599 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #include <mbarrier.h>
601 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
602 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
603 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
604 #endif
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if !ECB_AVOID_PTHREADS
609 /*
610 * if you get undefined symbol references to pthread_mutex_lock,
611 * or failure to find pthread.h, then you should implement
612 * the ECB_MEMORY_FENCE operations for your cpu/compiler
613 * OR provide pthread.h and link against the posix thread library
614 * of your system.
615 */
616 #include <pthread.h>
617 #define ECB_NEEDS_PTHREADS 1
618 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
619
620 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
621 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
622 #endif
623#endif
624
625#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
626 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
627#endif
628
629#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
630 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
631#endif
632
633/*****************************************************************************/
634
635#define ECB_C99 (__STDC_VERSION__ >= 199901L)
636
637#if __cplusplus
638 #define ecb_inline static inline
639#elif ECB_GCC_VERSION(2,5)
640 #define ecb_inline static __inline__
641#elif ECB_C99
642 #define ecb_inline static inline
643#else
644 #define ecb_inline static
645#endif
646
647#if ECB_GCC_VERSION(3,3)
648 #define ecb_restrict __restrict__
649#elif ECB_C99
650 #define ecb_restrict restrict
651#else
652 #define ecb_restrict
653#endif
654
655typedef int ecb_bool;
656
657#define ECB_CONCAT_(a, b) a ## b
658#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
659#define ECB_STRINGIFY_(a) # a
660#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
661
662#define ecb_function_ ecb_inline
663
664#if ECB_GCC_VERSION(3,1)
665 #define ecb_attribute(attrlist) __attribute__(attrlist)
666 #define ecb_is_constant(expr) __builtin_constant_p (expr)
667 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
668 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
669#else
670 #define ecb_attribute(attrlist)
671 #define ecb_is_constant(expr) 0
672 #define ecb_expect(expr,value) (expr)
673 #define ecb_prefetch(addr,rw,locality)
674#endif
675
676/* no emulation for ecb_decltype */
677#if ECB_GCC_VERSION(4,5)
678 #define ecb_decltype(x) __decltype(x)
679#elif ECB_GCC_VERSION(3,0)
680 #define ecb_decltype(x) __typeof(x)
681#endif
682
683#define ecb_noinline ecb_attribute ((__noinline__))
684#define ecb_noreturn ecb_attribute ((__noreturn__))
685#define ecb_unused ecb_attribute ((__unused__))
686#define ecb_const ecb_attribute ((__const__))
687#define ecb_pure ecb_attribute ((__pure__))
688
689#if ECB_GCC_VERSION(4,3)
690 #define ecb_artificial ecb_attribute ((__artificial__))
691 #define ecb_hot ecb_attribute ((__hot__))
692 #define ecb_cold ecb_attribute ((__cold__))
693#else
694 #define ecb_artificial
695 #define ecb_hot
696 #define ecb_cold
697#endif
698
699/* put around conditional expressions if you are very sure that the */
700/* expression is mostly true or mostly false. note that these return */
701/* booleans, not the expression. */
467#define expect_false(expr) expect ((expr) != 0, 0) 702#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
468#define expect_true(expr) expect ((expr) != 0, 1) 703#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
704/* for compatibility to the rest of the world */
705#define ecb_likely(expr) ecb_expect_true (expr)
706#define ecb_unlikely(expr) ecb_expect_false (expr)
707
708/* count trailing zero bits and count # of one bits */
709#if ECB_GCC_VERSION(3,4)
710 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
711 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
712 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
713 #define ecb_ctz32(x) __builtin_ctz (x)
714 #define ecb_ctz64(x) __builtin_ctzll (x)
715 #define ecb_popcount32(x) __builtin_popcount (x)
716 /* no popcountll */
717#else
718 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
719 ecb_function_ int
720 ecb_ctz32 (uint32_t x)
721 {
722 int r = 0;
723
724 x &= ~x + 1; /* this isolates the lowest bit */
725
726#if ECB_branchless_on_i386
727 r += !!(x & 0xaaaaaaaa) << 0;
728 r += !!(x & 0xcccccccc) << 1;
729 r += !!(x & 0xf0f0f0f0) << 2;
730 r += !!(x & 0xff00ff00) << 3;
731 r += !!(x & 0xffff0000) << 4;
732#else
733 if (x & 0xaaaaaaaa) r += 1;
734 if (x & 0xcccccccc) r += 2;
735 if (x & 0xf0f0f0f0) r += 4;
736 if (x & 0xff00ff00) r += 8;
737 if (x & 0xffff0000) r += 16;
738#endif
739
740 return r;
741 }
742
743 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
744 ecb_function_ int
745 ecb_ctz64 (uint64_t x)
746 {
747 int shift = x & 0xffffffffU ? 0 : 32;
748 return ecb_ctz32 (x >> shift) + shift;
749 }
750
751 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
752 ecb_function_ int
753 ecb_popcount32 (uint32_t x)
754 {
755 x -= (x >> 1) & 0x55555555;
756 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
757 x = ((x >> 4) + x) & 0x0f0f0f0f;
758 x *= 0x01010101;
759
760 return x >> 24;
761 }
762
763 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
764 ecb_function_ int ecb_ld32 (uint32_t x)
765 {
766 int r = 0;
767
768 if (x >> 16) { x >>= 16; r += 16; }
769 if (x >> 8) { x >>= 8; r += 8; }
770 if (x >> 4) { x >>= 4; r += 4; }
771 if (x >> 2) { x >>= 2; r += 2; }
772 if (x >> 1) { r += 1; }
773
774 return r;
775 }
776
777 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
778 ecb_function_ int ecb_ld64 (uint64_t x)
779 {
780 int r = 0;
781
782 if (x >> 32) { x >>= 32; r += 32; }
783
784 return r + ecb_ld32 (x);
785 }
786#endif
787
788ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
789ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
790{
791 return ( (x * 0x0802U & 0x22110U)
792 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
793}
794
795ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
796ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
797{
798 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
799 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
800 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
801 x = ( x >> 8 ) | ( x << 8);
802
803 return x;
804}
805
806ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
807ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
808{
809 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
810 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
811 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
812 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
813 x = ( x >> 16 ) | ( x << 16);
814
815 return x;
816}
817
818/* popcount64 is only available on 64 bit cpus as gcc builtin */
819/* so for this version we are lazy */
820ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
821ecb_function_ int
822ecb_popcount64 (uint64_t x)
823{
824 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
825}
826
827ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
828ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
829ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
830ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
831ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
832ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
833ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
834ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
835
836ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
837ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
838ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
839ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
840ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
841ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
842ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
843ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
844
845#if ECB_GCC_VERSION(4,3)
846 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
847 #define ecb_bswap32(x) __builtin_bswap32 (x)
848 #define ecb_bswap64(x) __builtin_bswap64 (x)
849#else
850 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
851 ecb_function_ uint16_t
852 ecb_bswap16 (uint16_t x)
853 {
854 return ecb_rotl16 (x, 8);
855 }
856
857 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
858 ecb_function_ uint32_t
859 ecb_bswap32 (uint32_t x)
860 {
861 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
862 }
863
864 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
865 ecb_function_ uint64_t
866 ecb_bswap64 (uint64_t x)
867 {
868 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
869 }
870#endif
871
872#if ECB_GCC_VERSION(4,5)
873 #define ecb_unreachable() __builtin_unreachable ()
874#else
875 /* this seems to work fine, but gcc always emits a warning for it :/ */
876 ecb_inline void ecb_unreachable (void) ecb_noreturn;
877 ecb_inline void ecb_unreachable (void) { }
878#endif
879
880/* try to tell the compiler that some condition is definitely true */
881#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
882
883ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
884ecb_inline unsigned char
885ecb_byteorder_helper (void)
886{
887 const uint32_t u = 0x11223344;
888 return *(unsigned char *)&u;
889}
890
891ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
892ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
893ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
894ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
895
896#if ECB_GCC_VERSION(3,0) || ECB_C99
897 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
898#else
899 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
900#endif
901
902#if __cplusplus
903 template<typename T>
904 static inline T ecb_div_rd (T val, T div)
905 {
906 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
907 }
908 template<typename T>
909 static inline T ecb_div_ru (T val, T div)
910 {
911 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
912 }
913#else
914 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
915 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
916#endif
917
918#if ecb_cplusplus_does_not_suck
919 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
920 template<typename T, int N>
921 static inline int ecb_array_length (const T (&arr)[N])
922 {
923 return N;
924 }
925#else
926 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
927#endif
928
929#endif
930
931/* ECB.H END */
932
933#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
934/* if your architecture doesn't need memory fences, e.g. because it is
935 * single-cpu/core, or if you use libev in a project that doesn't use libev
936 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
937 * libev, in which cases the memory fences become nops.
938 * alternatively, you can remove this #error and link against libpthread,
939 * which will then provide the memory fences.
940 */
941# error "memory fences not defined for your architecture, please report"
942#endif
943
944#ifndef ECB_MEMORY_FENCE
945# define ECB_MEMORY_FENCE do { } while (0)
946# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
947# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
948#endif
949
950#define expect_false(cond) ecb_expect_false (cond)
951#define expect_true(cond) ecb_expect_true (cond)
952#define noinline ecb_noinline
953
469#define inline_size static inline 954#define inline_size ecb_inline
470 955
471#if EV_MINIMAL 956#if EV_FEATURE_CODE
957# define inline_speed ecb_inline
958#else
472# define inline_speed static noinline 959# define inline_speed static noinline
473#else
474# define inline_speed static inline
475#endif 960#endif
476 961
477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 962#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478 963
479#if EV_MINPRI == EV_MAXPRI 964#if EV_MINPRI == EV_MAXPRI
… …
492#define ev_active(w) ((W)(w))->active 977#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at 978#define ev_at(w) ((WT)(w))->at
494 979
495#if EV_USE_REALTIME 980#if EV_USE_REALTIME
496/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 981/* sig_atomic_t is used to avoid per-thread variables or locking but still */
497/* giving it a reasonably high chance of working on typical architetcures */ 982/* giving it a reasonably high chance of working on typical architectures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 983static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif 984#endif
500 985
501#if EV_USE_MONOTONIC 986#if EV_USE_MONOTONIC
502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 987static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
504 989
505#ifndef EV_FD_TO_WIN32_HANDLE 990#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 991# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 992#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 993#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 994# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 995#endif
511#ifndef EV_WIN32_CLOSE_FD 996#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 997# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 998#endif
514 999
… …
516# include "ev_win32.c" 1001# include "ev_win32.c"
517#endif 1002#endif
518 1003
519/*****************************************************************************/ 1004/*****************************************************************************/
520 1005
1006/* define a suitable floor function (only used by periodics atm) */
1007
1008#if EV_USE_FLOOR
1009# include <math.h>
1010# define ev_floor(v) floor (v)
1011#else
1012
1013#include <float.h>
1014
1015/* a floor() replacement function, should be independent of ev_tstamp type */
1016static ev_tstamp noinline
1017ev_floor (ev_tstamp v)
1018{
1019 /* the choice of shift factor is not terribly important */
1020#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1021 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1022#else
1023 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1024#endif
1025
1026 /* argument too large for an unsigned long? */
1027 if (expect_false (v >= shift))
1028 {
1029 ev_tstamp f;
1030
1031 if (v == v - 1.)
1032 return v; /* very large number */
1033
1034 f = shift * ev_floor (v * (1. / shift));
1035 return f + ev_floor (v - f);
1036 }
1037
1038 /* special treatment for negative args? */
1039 if (expect_false (v < 0.))
1040 {
1041 ev_tstamp f = -ev_floor (-v);
1042
1043 return f - (f == v ? 0 : 1);
1044 }
1045
1046 /* fits into an unsigned long */
1047 return (unsigned long)v;
1048}
1049
1050#endif
1051
1052/*****************************************************************************/
1053
1054#ifdef __linux
1055# include <sys/utsname.h>
1056#endif
1057
1058static unsigned int noinline ecb_cold
1059ev_linux_version (void)
1060{
1061#ifdef __linux
1062 unsigned int v = 0;
1063 struct utsname buf;
1064 int i;
1065 char *p = buf.release;
1066
1067 if (uname (&buf))
1068 return 0;
1069
1070 for (i = 3+1; --i; )
1071 {
1072 unsigned int c = 0;
1073
1074 for (;;)
1075 {
1076 if (*p >= '0' && *p <= '9')
1077 c = c * 10 + *p++ - '0';
1078 else
1079 {
1080 p += *p == '.';
1081 break;
1082 }
1083 }
1084
1085 v = (v << 8) | c;
1086 }
1087
1088 return v;
1089#else
1090 return 0;
1091#endif
1092}
1093
1094/*****************************************************************************/
1095
1096#if EV_AVOID_STDIO
1097static void noinline ecb_cold
1098ev_printerr (const char *msg)
1099{
1100 write (STDERR_FILENO, msg, strlen (msg));
1101}
1102#endif
1103
521static void (*syserr_cb)(const char *msg); 1104static void (*syserr_cb)(const char *msg);
522 1105
523void 1106void ecb_cold
524ev_set_syserr_cb (void (*cb)(const char *msg)) 1107ev_set_syserr_cb (void (*cb)(const char *msg))
525{ 1108{
526 syserr_cb = cb; 1109 syserr_cb = cb;
527} 1110}
528 1111
529static void noinline 1112static void noinline ecb_cold
530ev_syserr (const char *msg) 1113ev_syserr (const char *msg)
531{ 1114{
532 if (!msg) 1115 if (!msg)
533 msg = "(libev) system error"; 1116 msg = "(libev) system error";
534 1117
535 if (syserr_cb) 1118 if (syserr_cb)
536 syserr_cb (msg); 1119 syserr_cb (msg);
537 else 1120 else
538 { 1121 {
1122#if EV_AVOID_STDIO
1123 ev_printerr (msg);
1124 ev_printerr (": ");
1125 ev_printerr (strerror (errno));
1126 ev_printerr ("\n");
1127#else
539 perror (msg); 1128 perror (msg);
1129#endif
540 abort (); 1130 abort ();
541 } 1131 }
542} 1132}
543 1133
544static void * 1134static void *
545ev_realloc_emul (void *ptr, long size) 1135ev_realloc_emul (void *ptr, long size)
546{ 1136{
1137#if __GLIBC__
1138 return realloc (ptr, size);
1139#else
547 /* some systems, notably openbsd and darwin, fail to properly 1140 /* some systems, notably openbsd and darwin, fail to properly
548 * implement realloc (x, 0) (as required by both ansi c-98 and 1141 * implement realloc (x, 0) (as required by both ansi c-89 and
549 * the single unix specification, so work around them here. 1142 * the single unix specification, so work around them here.
550 */ 1143 */
551 1144
552 if (size) 1145 if (size)
553 return realloc (ptr, size); 1146 return realloc (ptr, size);
554 1147
555 free (ptr); 1148 free (ptr);
556 return 0; 1149 return 0;
1150#endif
557} 1151}
558 1152
559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1153static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
560 1154
561void 1155void ecb_cold
562ev_set_allocator (void *(*cb)(void *ptr, long size)) 1156ev_set_allocator (void *(*cb)(void *ptr, long size))
563{ 1157{
564 alloc = cb; 1158 alloc = cb;
565} 1159}
566 1160
… …
569{ 1163{
570 ptr = alloc (ptr, size); 1164 ptr = alloc (ptr, size);
571 1165
572 if (!ptr && size) 1166 if (!ptr && size)
573 { 1167 {
1168#if EV_AVOID_STDIO
1169 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1170#else
574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1171 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1172#endif
575 abort (); 1173 abort ();
576 } 1174 }
577 1175
578 return ptr; 1176 return ptr;
579} 1177}
… …
595 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1193 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
596 unsigned char unused; 1194 unsigned char unused;
597#if EV_USE_EPOLL 1195#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */ 1196 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif 1197#endif
600#if EV_SELECT_IS_WINSOCKET 1198#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
601 SOCKET handle; 1199 SOCKET handle;
1200#endif
1201#if EV_USE_IOCP
1202 OVERLAPPED or, ow;
602#endif 1203#endif
603} ANFD; 1204} ANFD;
604 1205
605/* stores the pending event set for a given watcher */ 1206/* stores the pending event set for a given watcher */
606typedef struct 1207typedef struct
… …
648 #undef VAR 1249 #undef VAR
649 }; 1250 };
650 #include "ev_wrap.h" 1251 #include "ev_wrap.h"
651 1252
652 static struct ev_loop default_loop_struct; 1253 static struct ev_loop default_loop_struct;
653 struct ev_loop *ev_default_loop_ptr; 1254 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
654 1255
655#else 1256#else
656 1257
657 ev_tstamp ev_rt_now; 1258 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
658 #define VAR(name,decl) static decl; 1259 #define VAR(name,decl) static decl;
659 #include "ev_vars.h" 1260 #include "ev_vars.h"
660 #undef VAR 1261 #undef VAR
661 1262
662 static int ev_default_loop_ptr; 1263 static int ev_default_loop_ptr;
663 1264
664#endif 1265#endif
665 1266
666#if EV_MINIMAL < 2 1267#if EV_FEATURE_API
667# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1268# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
668# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1269# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
669# define EV_INVOKE_PENDING invoke_cb (EV_A) 1270# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else 1271#else
671# define EV_RELEASE_CB (void)0 1272# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0 1273# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1274# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif 1275#endif
675 1276
676#define EVUNLOOP_RECURSE 0x80 1277#define EVBREAK_RECURSE 0x80
677 1278
678/*****************************************************************************/ 1279/*****************************************************************************/
679 1280
680#ifndef EV_HAVE_EV_TIME 1281#ifndef EV_HAVE_EV_TIME
681ev_tstamp 1282ev_tstamp
… …
725 if (delay > 0.) 1326 if (delay > 0.)
726 { 1327 {
727#if EV_USE_NANOSLEEP 1328#if EV_USE_NANOSLEEP
728 struct timespec ts; 1329 struct timespec ts;
729 1330
730 ts.tv_sec = (time_t)delay; 1331 EV_TS_SET (ts, delay);
731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
732
733 nanosleep (&ts, 0); 1332 nanosleep (&ts, 0);
734#elif defined(_WIN32) 1333#elif defined(_WIN32)
735 Sleep ((unsigned long)(delay * 1e3)); 1334 Sleep ((unsigned long)(delay * 1e3));
736#else 1335#else
737 struct timeval tv; 1336 struct timeval tv;
738 1337
739 tv.tv_sec = (time_t)delay;
740 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
741
742 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1338 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
743 /* something not guaranteed by newer posix versions, but guaranteed */ 1339 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */ 1340 /* by older ones */
1341 EV_TV_SET (tv, delay);
745 select (0, 0, 0, 0, &tv); 1342 select (0, 0, 0, 0, &tv);
746#endif 1343#endif
747 } 1344 }
748} 1345}
749 1346
750/*****************************************************************************/ 1347/*****************************************************************************/
751 1348
752#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1349#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
753 1350
754/* find a suitable new size for the given array, */ 1351/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */ 1352/* hopefully by rounding to a nice-to-malloc size */
756inline_size int 1353inline_size int
757array_nextsize (int elem, int cur, int cnt) 1354array_nextsize (int elem, int cur, int cnt)
758{ 1355{
759 int ncur = cur + 1; 1356 int ncur = cur + 1;
760 1357
761 do 1358 do
762 ncur <<= 1; 1359 ncur <<= 1;
763 while (cnt > ncur); 1360 while (cnt > ncur);
764 1361
765 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1362 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
766 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1363 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
767 { 1364 {
768 ncur *= elem; 1365 ncur *= elem;
769 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1366 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
770 ncur = ncur - sizeof (void *) * 4; 1367 ncur = ncur - sizeof (void *) * 4;
… …
772 } 1369 }
773 1370
774 return ncur; 1371 return ncur;
775} 1372}
776 1373
777static noinline void * 1374static void * noinline ecb_cold
778array_realloc (int elem, void *base, int *cur, int cnt) 1375array_realloc (int elem, void *base, int *cur, int cnt)
779{ 1376{
780 *cur = array_nextsize (elem, *cur, cnt); 1377 *cur = array_nextsize (elem, *cur, cnt);
781 return ev_realloc (base, elem * *cur); 1378 return ev_realloc (base, elem * *cur);
782} 1379}
… …
785 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1382 memset ((void *)(base), 0, sizeof (*(base)) * (count))
786 1383
787#define array_needsize(type,base,cur,cnt,init) \ 1384#define array_needsize(type,base,cur,cnt,init) \
788 if (expect_false ((cnt) > (cur))) \ 1385 if (expect_false ((cnt) > (cur))) \
789 { \ 1386 { \
790 int ocur_ = (cur); \ 1387 int ecb_unused ocur_ = (cur); \
791 (base) = (type *)array_realloc \ 1388 (base) = (type *)array_realloc \
792 (sizeof (type), (base), &(cur), (cnt)); \ 1389 (sizeof (type), (base), &(cur), (cnt)); \
793 init ((base) + (ocur_), (cur) - ocur_); \ 1390 init ((base) + (ocur_), (cur) - ocur_); \
794 } 1391 }
795 1392
… …
856} 1453}
857 1454
858/*****************************************************************************/ 1455/*****************************************************************************/
859 1456
860inline_speed void 1457inline_speed void
861fd_event_nc (EV_P_ int fd, int revents) 1458fd_event_nocheck (EV_P_ int fd, int revents)
862{ 1459{
863 ANFD *anfd = anfds + fd; 1460 ANFD *anfd = anfds + fd;
864 ev_io *w; 1461 ev_io *w;
865 1462
866 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1463 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
878fd_event (EV_P_ int fd, int revents) 1475fd_event (EV_P_ int fd, int revents)
879{ 1476{
880 ANFD *anfd = anfds + fd; 1477 ANFD *anfd = anfds + fd;
881 1478
882 if (expect_true (!anfd->reify)) 1479 if (expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents); 1480 fd_event_nocheck (EV_A_ fd, revents);
884} 1481}
885 1482
886void 1483void
887ev_feed_fd_event (EV_P_ int fd, int revents) 1484ev_feed_fd_event (EV_P_ int fd, int revents)
888{ 1485{
889 if (fd >= 0 && fd < anfdmax) 1486 if (fd >= 0 && fd < anfdmax)
890 fd_event_nc (EV_A_ fd, revents); 1487 fd_event_nocheck (EV_A_ fd, revents);
891} 1488}
892 1489
893/* make sure the external fd watch events are in-sync */ 1490/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */ 1491/* with the kernel/libev internal state */
895inline_size void 1492inline_size void
896fd_reify (EV_P) 1493fd_reify (EV_P)
897{ 1494{
898 int i; 1495 int i;
899 1496
1497#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1498 for (i = 0; i < fdchangecnt; ++i)
1499 {
1500 int fd = fdchanges [i];
1501 ANFD *anfd = anfds + fd;
1502
1503 if (anfd->reify & EV__IOFDSET && anfd->head)
1504 {
1505 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1506
1507 if (handle != anfd->handle)
1508 {
1509 unsigned long arg;
1510
1511 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1512
1513 /* handle changed, but fd didn't - we need to do it in two steps */
1514 backend_modify (EV_A_ fd, anfd->events, 0);
1515 anfd->events = 0;
1516 anfd->handle = handle;
1517 }
1518 }
1519 }
1520#endif
1521
900 for (i = 0; i < fdchangecnt; ++i) 1522 for (i = 0; i < fdchangecnt; ++i)
901 { 1523 {
902 int fd = fdchanges [i]; 1524 int fd = fdchanges [i];
903 ANFD *anfd = anfds + fd; 1525 ANFD *anfd = anfds + fd;
904 ev_io *w; 1526 ev_io *w;
905 1527
906 unsigned char events = 0; 1528 unsigned char o_events = anfd->events;
1529 unsigned char o_reify = anfd->reify;
907 1530
908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1531 anfd->reify = 0;
909 events |= (unsigned char)w->events;
910 1532
911#if EV_SELECT_IS_WINSOCKET 1533 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
912 if (events)
913 { 1534 {
914 unsigned long arg; 1535 anfd->events = 0;
915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1536
916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1537 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1538 anfd->events |= (unsigned char)w->events;
1539
1540 if (o_events != anfd->events)
1541 o_reify = EV__IOFDSET; /* actually |= */
917 } 1542 }
918#endif
919 1543
920 { 1544 if (o_reify & EV__IOFDSET)
921 unsigned char o_events = anfd->events;
922 unsigned char o_reify = anfd->reify;
923
924 anfd->reify = 0;
925 anfd->events = events;
926
927 if (o_events != events || o_reify & EV__IOFDSET)
928 backend_modify (EV_A_ fd, o_events, events); 1545 backend_modify (EV_A_ fd, o_events, anfd->events);
929 }
930 } 1546 }
931 1547
932 fdchangecnt = 0; 1548 fdchangecnt = 0;
933} 1549}
934 1550
… …
946 fdchanges [fdchangecnt - 1] = fd; 1562 fdchanges [fdchangecnt - 1] = fd;
947 } 1563 }
948} 1564}
949 1565
950/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1566/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
951inline_speed void 1567inline_speed void ecb_cold
952fd_kill (EV_P_ int fd) 1568fd_kill (EV_P_ int fd)
953{ 1569{
954 ev_io *w; 1570 ev_io *w;
955 1571
956 while ((w = (ev_io *)anfds [fd].head)) 1572 while ((w = (ev_io *)anfds [fd].head))
… …
958 ev_io_stop (EV_A_ w); 1574 ev_io_stop (EV_A_ w);
959 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1575 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
960 } 1576 }
961} 1577}
962 1578
963/* check whether the given fd is atcually valid, for error recovery */ 1579/* check whether the given fd is actually valid, for error recovery */
964inline_size int 1580inline_size int ecb_cold
965fd_valid (int fd) 1581fd_valid (int fd)
966{ 1582{
967#ifdef _WIN32 1583#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 1584 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 1585#else
970 return fcntl (fd, F_GETFD) != -1; 1586 return fcntl (fd, F_GETFD) != -1;
971#endif 1587#endif
972} 1588}
973 1589
974/* called on EBADF to verify fds */ 1590/* called on EBADF to verify fds */
975static void noinline 1591static void noinline ecb_cold
976fd_ebadf (EV_P) 1592fd_ebadf (EV_P)
977{ 1593{
978 int fd; 1594 int fd;
979 1595
980 for (fd = 0; fd < anfdmax; ++fd) 1596 for (fd = 0; fd < anfdmax; ++fd)
… …
982 if (!fd_valid (fd) && errno == EBADF) 1598 if (!fd_valid (fd) && errno == EBADF)
983 fd_kill (EV_A_ fd); 1599 fd_kill (EV_A_ fd);
984} 1600}
985 1601
986/* called on ENOMEM in select/poll to kill some fds and retry */ 1602/* called on ENOMEM in select/poll to kill some fds and retry */
987static void noinline 1603static void noinline ecb_cold
988fd_enomem (EV_P) 1604fd_enomem (EV_P)
989{ 1605{
990 int fd; 1606 int fd;
991 1607
992 for (fd = anfdmax; fd--; ) 1608 for (fd = anfdmax; fd--; )
… …
1010 anfds [fd].emask = 0; 1626 anfds [fd].emask = 0;
1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1627 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1012 } 1628 }
1013} 1629}
1014 1630
1631/* used to prepare libev internal fd's */
1632/* this is not fork-safe */
1633inline_speed void
1634fd_intern (int fd)
1635{
1636#ifdef _WIN32
1637 unsigned long arg = 1;
1638 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1639#else
1640 fcntl (fd, F_SETFD, FD_CLOEXEC);
1641 fcntl (fd, F_SETFL, O_NONBLOCK);
1642#endif
1643}
1644
1015/*****************************************************************************/ 1645/*****************************************************************************/
1016 1646
1017/* 1647/*
1018 * the heap functions want a real array index. array index 0 uis guaranteed to not 1648 * the heap functions want a real array index. array index 0 is guaranteed to not
1019 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1649 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1020 * the branching factor of the d-tree. 1650 * the branching factor of the d-tree.
1021 */ 1651 */
1022 1652
1023/* 1653/*
… …
1171 1801
1172static ANSIG signals [EV_NSIG - 1]; 1802static ANSIG signals [EV_NSIG - 1];
1173 1803
1174/*****************************************************************************/ 1804/*****************************************************************************/
1175 1805
1176/* used to prepare libev internal fd's */ 1806#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1177/* this is not fork-safe */
1178inline_speed void
1179fd_intern (int fd)
1180{
1181#ifdef _WIN32
1182 unsigned long arg = 1;
1183 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1184#else
1185 fcntl (fd, F_SETFD, FD_CLOEXEC);
1186 fcntl (fd, F_SETFL, O_NONBLOCK);
1187#endif
1188}
1189 1807
1190static void noinline 1808static void noinline ecb_cold
1191evpipe_init (EV_P) 1809evpipe_init (EV_P)
1192{ 1810{
1193 if (!ev_is_active (&pipe_w)) 1811 if (!ev_is_active (&pipe_w))
1194 { 1812 {
1195#if EV_USE_EVENTFD 1813# if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1814 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1197 if (evfd < 0 && errno == EINVAL) 1815 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0); 1816 evfd = eventfd (0, 0);
1199 1817
1200 if (evfd >= 0) 1818 if (evfd >= 0)
… …
1202 evpipe [0] = -1; 1820 evpipe [0] = -1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */ 1821 fd_intern (evfd); /* doing it twice doesn't hurt */
1204 ev_io_set (&pipe_w, evfd, EV_READ); 1822 ev_io_set (&pipe_w, evfd, EV_READ);
1205 } 1823 }
1206 else 1824 else
1207#endif 1825# endif
1208 { 1826 {
1209 while (pipe (evpipe)) 1827 while (pipe (evpipe))
1210 ev_syserr ("(libev) error creating signal/async pipe"); 1828 ev_syserr ("(libev) error creating signal/async pipe");
1211 1829
1212 fd_intern (evpipe [0]); 1830 fd_intern (evpipe [0]);
… …
1217 ev_io_start (EV_A_ &pipe_w); 1835 ev_io_start (EV_A_ &pipe_w);
1218 ev_unref (EV_A); /* watcher should not keep loop alive */ 1836 ev_unref (EV_A); /* watcher should not keep loop alive */
1219 } 1837 }
1220} 1838}
1221 1839
1222inline_size void 1840inline_speed void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1841evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{ 1842{
1225 if (!*flag) 1843 if (expect_true (*flag))
1844 return;
1845
1846 *flag = 1;
1847
1848 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1849
1850 pipe_write_skipped = 1;
1851
1852 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1853
1854 if (pipe_write_wanted)
1226 { 1855 {
1856 int old_errno;
1857
1858 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1859
1227 int old_errno = errno; /* save errno because write might clobber it */ 1860 old_errno = errno; /* save errno because write will clobber it */
1228
1229 *flag = 1;
1230 1861
1231#if EV_USE_EVENTFD 1862#if EV_USE_EVENTFD
1232 if (evfd >= 0) 1863 if (evfd >= 0)
1233 { 1864 {
1234 uint64_t counter = 1; 1865 uint64_t counter = 1;
1235 write (evfd, &counter, sizeof (uint64_t)); 1866 write (evfd, &counter, sizeof (uint64_t));
1236 } 1867 }
1237 else 1868 else
1238#endif 1869#endif
1870 {
1871 /* win32 people keep sending patches that change this write() to send() */
1872 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1873 /* so when you think this write should be a send instead, please find out */
1874 /* where your send() is from - it's definitely not the microsoft send, and */
1875 /* tell me. thank you. */
1239 write (evpipe [1], &old_errno, 1); 1876 write (evpipe [1], &(evpipe [1]), 1);
1877 }
1240 1878
1241 errno = old_errno; 1879 errno = old_errno;
1242 } 1880 }
1243} 1881}
1244 1882
… …
1247static void 1885static void
1248pipecb (EV_P_ ev_io *iow, int revents) 1886pipecb (EV_P_ ev_io *iow, int revents)
1249{ 1887{
1250 int i; 1888 int i;
1251 1889
1890 if (revents & EV_READ)
1891 {
1252#if EV_USE_EVENTFD 1892#if EV_USE_EVENTFD
1253 if (evfd >= 0) 1893 if (evfd >= 0)
1254 { 1894 {
1255 uint64_t counter; 1895 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t)); 1896 read (evfd, &counter, sizeof (uint64_t));
1257 } 1897 }
1258 else 1898 else
1259#endif 1899#endif
1260 { 1900 {
1261 char dummy; 1901 char dummy;
1902 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1262 read (evpipe [0], &dummy, 1); 1903 read (evpipe [0], &dummy, 1);
1904 }
1263 } 1905 }
1264 1906
1907 pipe_write_skipped = 0;
1908
1909#if EV_SIGNAL_ENABLE
1265 if (sig_pending) 1910 if (sig_pending)
1266 { 1911 {
1267 sig_pending = 0; 1912 sig_pending = 0;
1268 1913
1269 for (i = EV_NSIG - 1; i--; ) 1914 for (i = EV_NSIG - 1; i--; )
1270 if (expect_false (signals [i].pending)) 1915 if (expect_false (signals [i].pending))
1271 ev_feed_signal_event (EV_A_ i + 1); 1916 ev_feed_signal_event (EV_A_ i + 1);
1272 } 1917 }
1918#endif
1273 1919
1274#if EV_ASYNC_ENABLE 1920#if EV_ASYNC_ENABLE
1275 if (async_pending) 1921 if (async_pending)
1276 { 1922 {
1277 async_pending = 0; 1923 async_pending = 0;
… …
1286#endif 1932#endif
1287} 1933}
1288 1934
1289/*****************************************************************************/ 1935/*****************************************************************************/
1290 1936
1937void
1938ev_feed_signal (int signum)
1939{
1940#if EV_MULTIPLICITY
1941 EV_P = signals [signum - 1].loop;
1942
1943 if (!EV_A)
1944 return;
1945#endif
1946
1947 if (!ev_active (&pipe_w))
1948 return;
1949
1950 signals [signum - 1].pending = 1;
1951 evpipe_write (EV_A_ &sig_pending);
1952}
1953
1291static void 1954static void
1292ev_sighandler (int signum) 1955ev_sighandler (int signum)
1293{ 1956{
1294#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop;
1296#endif
1297
1298#if _WIN32 1957#ifdef _WIN32
1299 signal (signum, ev_sighandler); 1958 signal (signum, ev_sighandler);
1300#endif 1959#endif
1301 1960
1302 signals [signum - 1].pending = 1; 1961 ev_feed_signal (signum);
1303 evpipe_write (EV_A_ &sig_pending);
1304} 1962}
1305 1963
1306void noinline 1964void noinline
1307ev_feed_signal_event (EV_P_ int signum) 1965ev_feed_signal_event (EV_P_ int signum)
1308{ 1966{
… …
1345 break; 2003 break;
1346 } 2004 }
1347} 2005}
1348#endif 2006#endif
1349 2007
2008#endif
2009
1350/*****************************************************************************/ 2010/*****************************************************************************/
1351 2011
2012#if EV_CHILD_ENABLE
1352static WL childs [EV_PID_HASHSIZE]; 2013static WL childs [EV_PID_HASHSIZE];
1353
1354#ifndef _WIN32
1355 2014
1356static ev_signal childev; 2015static ev_signal childev;
1357 2016
1358#ifndef WIFCONTINUED 2017#ifndef WIFCONTINUED
1359# define WIFCONTINUED(status) 0 2018# define WIFCONTINUED(status) 0
… …
1364child_reap (EV_P_ int chain, int pid, int status) 2023child_reap (EV_P_ int chain, int pid, int status)
1365{ 2024{
1366 ev_child *w; 2025 ev_child *w;
1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2026 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1368 2027
1369 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2028 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1370 { 2029 {
1371 if ((w->pid == pid || !w->pid) 2030 if ((w->pid == pid || !w->pid)
1372 && (!traced || (w->flags & 1))) 2031 && (!traced || (w->flags & 1)))
1373 { 2032 {
1374 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2033 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1399 /* make sure we are called again until all children have been reaped */ 2058 /* make sure we are called again until all children have been reaped */
1400 /* we need to do it this way so that the callback gets called before we continue */ 2059 /* we need to do it this way so that the callback gets called before we continue */
1401 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2060 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1402 2061
1403 child_reap (EV_A_ pid, pid, status); 2062 child_reap (EV_A_ pid, pid, status);
1404 if (EV_PID_HASHSIZE > 1) 2063 if ((EV_PID_HASHSIZE) > 1)
1405 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2064 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1406} 2065}
1407 2066
1408#endif 2067#endif
1409 2068
1410/*****************************************************************************/ 2069/*****************************************************************************/
1411 2070
2071#if EV_USE_IOCP
2072# include "ev_iocp.c"
2073#endif
1412#if EV_USE_PORT 2074#if EV_USE_PORT
1413# include "ev_port.c" 2075# include "ev_port.c"
1414#endif 2076#endif
1415#if EV_USE_KQUEUE 2077#if EV_USE_KQUEUE
1416# include "ev_kqueue.c" 2078# include "ev_kqueue.c"
… …
1423#endif 2085#endif
1424#if EV_USE_SELECT 2086#if EV_USE_SELECT
1425# include "ev_select.c" 2087# include "ev_select.c"
1426#endif 2088#endif
1427 2089
1428int 2090int ecb_cold
1429ev_version_major (void) 2091ev_version_major (void)
1430{ 2092{
1431 return EV_VERSION_MAJOR; 2093 return EV_VERSION_MAJOR;
1432} 2094}
1433 2095
1434int 2096int ecb_cold
1435ev_version_minor (void) 2097ev_version_minor (void)
1436{ 2098{
1437 return EV_VERSION_MINOR; 2099 return EV_VERSION_MINOR;
1438} 2100}
1439 2101
1440/* return true if we are running with elevated privileges and should ignore env variables */ 2102/* return true if we are running with elevated privileges and should ignore env variables */
1441int inline_size 2103int inline_size ecb_cold
1442enable_secure (void) 2104enable_secure (void)
1443{ 2105{
1444#ifdef _WIN32 2106#ifdef _WIN32
1445 return 0; 2107 return 0;
1446#else 2108#else
1447 return getuid () != geteuid () 2109 return getuid () != geteuid ()
1448 || getgid () != getegid (); 2110 || getgid () != getegid ();
1449#endif 2111#endif
1450} 2112}
1451 2113
1452unsigned int 2114unsigned int ecb_cold
1453ev_supported_backends (void) 2115ev_supported_backends (void)
1454{ 2116{
1455 unsigned int flags = 0; 2117 unsigned int flags = 0;
1456 2118
1457 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2119 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1461 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2123 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1462 2124
1463 return flags; 2125 return flags;
1464} 2126}
1465 2127
1466unsigned int 2128unsigned int ecb_cold
1467ev_recommended_backends (void) 2129ev_recommended_backends (void)
1468{ 2130{
1469 unsigned int flags = ev_supported_backends (); 2131 unsigned int flags = ev_supported_backends ();
1470 2132
1471#ifndef __NetBSD__ 2133#ifndef __NetBSD__
… …
1476#ifdef __APPLE__ 2138#ifdef __APPLE__
1477 /* only select works correctly on that "unix-certified" platform */ 2139 /* only select works correctly on that "unix-certified" platform */
1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2140 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2141 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1480#endif 2142#endif
2143#ifdef __FreeBSD__
2144 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2145#endif
1481 2146
1482 return flags; 2147 return flags;
1483} 2148}
1484 2149
1485unsigned int 2150unsigned int ecb_cold
1486ev_embeddable_backends (void) 2151ev_embeddable_backends (void)
1487{ 2152{
1488 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2153 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1489 2154
1490 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2155 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1491 /* please fix it and tell me how to detect the fix */ 2156 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1492 flags &= ~EVBACKEND_EPOLL; 2157 flags &= ~EVBACKEND_EPOLL;
1493 2158
1494 return flags; 2159 return flags;
1495} 2160}
1496 2161
1497unsigned int 2162unsigned int
1498ev_backend (EV_P) 2163ev_backend (EV_P)
1499{ 2164{
1500 return backend; 2165 return backend;
1501} 2166}
1502 2167
1503#if EV_MINIMAL < 2 2168#if EV_FEATURE_API
1504unsigned int 2169unsigned int
1505ev_loop_count (EV_P) 2170ev_iteration (EV_P)
1506{ 2171{
1507 return loop_count; 2172 return loop_count;
1508} 2173}
1509 2174
1510unsigned int 2175unsigned int
1511ev_loop_depth (EV_P) 2176ev_depth (EV_P)
1512{ 2177{
1513 return loop_depth; 2178 return loop_depth;
1514} 2179}
1515 2180
1516void 2181void
… …
1535ev_userdata (EV_P) 2200ev_userdata (EV_P)
1536{ 2201{
1537 return userdata; 2202 return userdata;
1538} 2203}
1539 2204
2205void
1540void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2206ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1541{ 2207{
1542 invoke_cb = invoke_pending_cb; 2208 invoke_cb = invoke_pending_cb;
1543} 2209}
1544 2210
2211void
1545void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2212ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1546{ 2213{
1547 release_cb = release; 2214 release_cb = release;
1548 acquire_cb = acquire; 2215 acquire_cb = acquire;
1549} 2216}
1550#endif 2217#endif
1551 2218
1552/* initialise a loop structure, must be zero-initialised */ 2219/* initialise a loop structure, must be zero-initialised */
1553static void noinline 2220static void noinline ecb_cold
1554loop_init (EV_P_ unsigned int flags) 2221loop_init (EV_P_ unsigned int flags)
1555{ 2222{
1556 if (!backend) 2223 if (!backend)
1557 { 2224 {
2225 origflags = flags;
2226
1558#if EV_USE_REALTIME 2227#if EV_USE_REALTIME
1559 if (!have_realtime) 2228 if (!have_realtime)
1560 { 2229 {
1561 struct timespec ts; 2230 struct timespec ts;
1562 2231
… …
1584 if (!(flags & EVFLAG_NOENV) 2253 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure () 2254 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS")) 2255 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS")); 2256 flags = atoi (getenv ("LIBEV_FLAGS"));
1588 2257
1589 ev_rt_now = ev_time (); 2258 ev_rt_now = ev_time ();
1590 mn_now = get_clock (); 2259 mn_now = get_clock ();
1591 now_floor = mn_now; 2260 now_floor = mn_now;
1592 rtmn_diff = ev_rt_now - mn_now; 2261 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2 2262#if EV_FEATURE_API
1594 invoke_cb = ev_invoke_pending; 2263 invoke_cb = ev_invoke_pending;
1595#endif 2264#endif
1596 2265
1597 io_blocktime = 0.; 2266 io_blocktime = 0.;
1598 timeout_blocktime = 0.; 2267 timeout_blocktime = 0.;
1599 backend = 0; 2268 backend = 0;
1600 backend_fd = -1; 2269 backend_fd = -1;
1601 sig_pending = 0; 2270 sig_pending = 0;
1602#if EV_ASYNC_ENABLE 2271#if EV_ASYNC_ENABLE
1603 async_pending = 0; 2272 async_pending = 0;
1604#endif 2273#endif
2274 pipe_write_skipped = 0;
2275 pipe_write_wanted = 0;
1605#if EV_USE_INOTIFY 2276#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2277 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 2278#endif
1608#if EV_USE_SIGNALFD 2279#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2280 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 2281#endif
1611 2282
1612 if (!(flags & 0x0000ffffU)) 2283 if (!(flags & EVBACKEND_MASK))
1613 flags |= ev_recommended_backends (); 2284 flags |= ev_recommended_backends ();
1614 2285
2286#if EV_USE_IOCP
2287 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2288#endif
1615#if EV_USE_PORT 2289#if EV_USE_PORT
1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2290 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1617#endif 2291#endif
1618#if EV_USE_KQUEUE 2292#if EV_USE_KQUEUE
1619 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2293 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2302 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1629#endif 2303#endif
1630 2304
1631 ev_prepare_init (&pending_w, pendingcb); 2305 ev_prepare_init (&pending_w, pendingcb);
1632 2306
2307#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1633 ev_init (&pipe_w, pipecb); 2308 ev_init (&pipe_w, pipecb);
1634 ev_set_priority (&pipe_w, EV_MAXPRI); 2309 ev_set_priority (&pipe_w, EV_MAXPRI);
2310#endif
1635 } 2311 }
1636} 2312}
1637 2313
1638/* free up a loop structure */ 2314/* free up a loop structure */
1639static void noinline 2315void ecb_cold
1640loop_destroy (EV_P) 2316ev_loop_destroy (EV_P)
1641{ 2317{
1642 int i; 2318 int i;
2319
2320#if EV_MULTIPLICITY
2321 /* mimic free (0) */
2322 if (!EV_A)
2323 return;
2324#endif
2325
2326#if EV_CLEANUP_ENABLE
2327 /* queue cleanup watchers (and execute them) */
2328 if (expect_false (cleanupcnt))
2329 {
2330 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2331 EV_INVOKE_PENDING;
2332 }
2333#endif
2334
2335#if EV_CHILD_ENABLE
2336 if (ev_is_active (&childev))
2337 {
2338 ev_ref (EV_A); /* child watcher */
2339 ev_signal_stop (EV_A_ &childev);
2340 }
2341#endif
1643 2342
1644 if (ev_is_active (&pipe_w)) 2343 if (ev_is_active (&pipe_w))
1645 { 2344 {
1646 /*ev_ref (EV_A);*/ 2345 /*ev_ref (EV_A);*/
1647 /*ev_io_stop (EV_A_ &pipe_w);*/ 2346 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1658 } 2357 }
1659 } 2358 }
1660 2359
1661#if EV_USE_SIGNALFD 2360#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w)) 2361 if (ev_is_active (&sigfd_w))
1663 {
1664 /*ev_ref (EV_A);*/
1665 /*ev_io_stop (EV_A_ &sigfd_w);*/
1666
1667 close (sigfd); 2362 close (sigfd);
1668 }
1669#endif 2363#endif
1670 2364
1671#if EV_USE_INOTIFY 2365#if EV_USE_INOTIFY
1672 if (fs_fd >= 0) 2366 if (fs_fd >= 0)
1673 close (fs_fd); 2367 close (fs_fd);
1674#endif 2368#endif
1675 2369
1676 if (backend_fd >= 0) 2370 if (backend_fd >= 0)
1677 close (backend_fd); 2371 close (backend_fd);
1678 2372
2373#if EV_USE_IOCP
2374 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2375#endif
1679#if EV_USE_PORT 2376#if EV_USE_PORT
1680 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2377 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1681#endif 2378#endif
1682#if EV_USE_KQUEUE 2379#if EV_USE_KQUEUE
1683 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2380 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1710 array_free (periodic, EMPTY); 2407 array_free (periodic, EMPTY);
1711#endif 2408#endif
1712#if EV_FORK_ENABLE 2409#if EV_FORK_ENABLE
1713 array_free (fork, EMPTY); 2410 array_free (fork, EMPTY);
1714#endif 2411#endif
2412#if EV_CLEANUP_ENABLE
2413 array_free (cleanup, EMPTY);
2414#endif
1715 array_free (prepare, EMPTY); 2415 array_free (prepare, EMPTY);
1716 array_free (check, EMPTY); 2416 array_free (check, EMPTY);
1717#if EV_ASYNC_ENABLE 2417#if EV_ASYNC_ENABLE
1718 array_free (async, EMPTY); 2418 array_free (async, EMPTY);
1719#endif 2419#endif
1720 2420
1721 backend = 0; 2421 backend = 0;
2422
2423#if EV_MULTIPLICITY
2424 if (ev_is_default_loop (EV_A))
2425#endif
2426 ev_default_loop_ptr = 0;
2427#if EV_MULTIPLICITY
2428 else
2429 ev_free (EV_A);
2430#endif
1722} 2431}
1723 2432
1724#if EV_USE_INOTIFY 2433#if EV_USE_INOTIFY
1725inline_size void infy_fork (EV_P); 2434inline_size void infy_fork (EV_P);
1726#endif 2435#endif
… …
1741 infy_fork (EV_A); 2450 infy_fork (EV_A);
1742#endif 2451#endif
1743 2452
1744 if (ev_is_active (&pipe_w)) 2453 if (ev_is_active (&pipe_w))
1745 { 2454 {
1746 /* this "locks" the handlers against writing to the pipe */ 2455 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1747 /* while we modify the fd vars */
1748 sig_pending = 1;
1749#if EV_ASYNC_ENABLE
1750 async_pending = 1;
1751#endif
1752 2456
1753 ev_ref (EV_A); 2457 ev_ref (EV_A);
1754 ev_io_stop (EV_A_ &pipe_w); 2458 ev_io_stop (EV_A_ &pipe_w);
1755 2459
1756#if EV_USE_EVENTFD 2460#if EV_USE_EVENTFD
… …
1762 { 2466 {
1763 EV_WIN32_CLOSE_FD (evpipe [0]); 2467 EV_WIN32_CLOSE_FD (evpipe [0]);
1764 EV_WIN32_CLOSE_FD (evpipe [1]); 2468 EV_WIN32_CLOSE_FD (evpipe [1]);
1765 } 2469 }
1766 2470
2471#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1767 evpipe_init (EV_A); 2472 evpipe_init (EV_A);
1768 /* now iterate over everything, in case we missed something */ 2473 /* now iterate over everything, in case we missed something */
1769 pipecb (EV_A_ &pipe_w, EV_READ); 2474 pipecb (EV_A_ &pipe_w, EV_READ);
2475#endif
1770 } 2476 }
1771 2477
1772 postfork = 0; 2478 postfork = 0;
1773} 2479}
1774 2480
1775#if EV_MULTIPLICITY 2481#if EV_MULTIPLICITY
1776 2482
1777struct ev_loop * 2483struct ev_loop * ecb_cold
1778ev_loop_new (unsigned int flags) 2484ev_loop_new (unsigned int flags)
1779{ 2485{
1780 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2486 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1781 2487
1782 memset (EV_A, 0, sizeof (struct ev_loop)); 2488 memset (EV_A, 0, sizeof (struct ev_loop));
1783 loop_init (EV_A_ flags); 2489 loop_init (EV_A_ flags);
1784 2490
1785 if (ev_backend (EV_A)) 2491 if (ev_backend (EV_A))
1786 return EV_A; 2492 return EV_A;
1787 2493
2494 ev_free (EV_A);
1788 return 0; 2495 return 0;
1789} 2496}
1790 2497
1791void
1792ev_loop_destroy (EV_P)
1793{
1794 loop_destroy (EV_A);
1795 ev_free (loop);
1796}
1797
1798void
1799ev_loop_fork (EV_P)
1800{
1801 postfork = 1; /* must be in line with ev_default_fork */
1802}
1803#endif /* multiplicity */ 2498#endif /* multiplicity */
1804 2499
1805#if EV_VERIFY 2500#if EV_VERIFY
1806static void noinline 2501static void noinline ecb_cold
1807verify_watcher (EV_P_ W w) 2502verify_watcher (EV_P_ W w)
1808{ 2503{
1809 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2504 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1810 2505
1811 if (w->pending) 2506 if (w->pending)
1812 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2507 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1813} 2508}
1814 2509
1815static void noinline 2510static void noinline ecb_cold
1816verify_heap (EV_P_ ANHE *heap, int N) 2511verify_heap (EV_P_ ANHE *heap, int N)
1817{ 2512{
1818 int i; 2513 int i;
1819 2514
1820 for (i = HEAP0; i < N + HEAP0; ++i) 2515 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1825 2520
1826 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2521 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1827 } 2522 }
1828} 2523}
1829 2524
1830static void noinline 2525static void noinline ecb_cold
1831array_verify (EV_P_ W *ws, int cnt) 2526array_verify (EV_P_ W *ws, int cnt)
1832{ 2527{
1833 while (cnt--) 2528 while (cnt--)
1834 { 2529 {
1835 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2530 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1836 verify_watcher (EV_A_ ws [cnt]); 2531 verify_watcher (EV_A_ ws [cnt]);
1837 } 2532 }
1838} 2533}
1839#endif 2534#endif
1840 2535
1841#if EV_MINIMAL < 2 2536#if EV_FEATURE_API
1842void 2537void ecb_cold
1843ev_loop_verify (EV_P) 2538ev_verify (EV_P)
1844{ 2539{
1845#if EV_VERIFY 2540#if EV_VERIFY
1846 int i; 2541 int i;
1847 WL w; 2542 WL w;
1848 2543
… …
1882#if EV_FORK_ENABLE 2577#if EV_FORK_ENABLE
1883 assert (forkmax >= forkcnt); 2578 assert (forkmax >= forkcnt);
1884 array_verify (EV_A_ (W *)forks, forkcnt); 2579 array_verify (EV_A_ (W *)forks, forkcnt);
1885#endif 2580#endif
1886 2581
2582#if EV_CLEANUP_ENABLE
2583 assert (cleanupmax >= cleanupcnt);
2584 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2585#endif
2586
1887#if EV_ASYNC_ENABLE 2587#if EV_ASYNC_ENABLE
1888 assert (asyncmax >= asynccnt); 2588 assert (asyncmax >= asynccnt);
1889 array_verify (EV_A_ (W *)asyncs, asynccnt); 2589 array_verify (EV_A_ (W *)asyncs, asynccnt);
1890#endif 2590#endif
1891 2591
2592#if EV_PREPARE_ENABLE
1892 assert (preparemax >= preparecnt); 2593 assert (preparemax >= preparecnt);
1893 array_verify (EV_A_ (W *)prepares, preparecnt); 2594 array_verify (EV_A_ (W *)prepares, preparecnt);
2595#endif
1894 2596
2597#if EV_CHECK_ENABLE
1895 assert (checkmax >= checkcnt); 2598 assert (checkmax >= checkcnt);
1896 array_verify (EV_A_ (W *)checks, checkcnt); 2599 array_verify (EV_A_ (W *)checks, checkcnt);
2600#endif
1897 2601
1898# if 0 2602# if 0
2603#if EV_CHILD_ENABLE
1899 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2604 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1900 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2605 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2606#endif
1901# endif 2607# endif
1902#endif 2608#endif
1903} 2609}
1904#endif 2610#endif
1905 2611
1906#if EV_MULTIPLICITY 2612#if EV_MULTIPLICITY
1907struct ev_loop * 2613struct ev_loop * ecb_cold
1908ev_default_loop_init (unsigned int flags)
1909#else 2614#else
1910int 2615int
2616#endif
1911ev_default_loop (unsigned int flags) 2617ev_default_loop (unsigned int flags)
1912#endif
1913{ 2618{
1914 if (!ev_default_loop_ptr) 2619 if (!ev_default_loop_ptr)
1915 { 2620 {
1916#if EV_MULTIPLICITY 2621#if EV_MULTIPLICITY
1917 EV_P = ev_default_loop_ptr = &default_loop_struct; 2622 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1921 2626
1922 loop_init (EV_A_ flags); 2627 loop_init (EV_A_ flags);
1923 2628
1924 if (ev_backend (EV_A)) 2629 if (ev_backend (EV_A))
1925 { 2630 {
1926#ifndef _WIN32 2631#if EV_CHILD_ENABLE
1927 ev_signal_init (&childev, childcb, SIGCHLD); 2632 ev_signal_init (&childev, childcb, SIGCHLD);
1928 ev_set_priority (&childev, EV_MAXPRI); 2633 ev_set_priority (&childev, EV_MAXPRI);
1929 ev_signal_start (EV_A_ &childev); 2634 ev_signal_start (EV_A_ &childev);
1930 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2635 ev_unref (EV_A); /* child watcher should not keep loop alive */
1931#endif 2636#endif
… …
1936 2641
1937 return ev_default_loop_ptr; 2642 return ev_default_loop_ptr;
1938} 2643}
1939 2644
1940void 2645void
1941ev_default_destroy (void) 2646ev_loop_fork (EV_P)
1942{ 2647{
1943#if EV_MULTIPLICITY
1944 EV_P = ev_default_loop_ptr;
1945#endif
1946
1947 ev_default_loop_ptr = 0;
1948
1949#ifndef _WIN32
1950 ev_ref (EV_A); /* child watcher */
1951 ev_signal_stop (EV_A_ &childev);
1952#endif
1953
1954 loop_destroy (EV_A);
1955}
1956
1957void
1958ev_default_fork (void)
1959{
1960#if EV_MULTIPLICITY
1961 EV_P = ev_default_loop_ptr;
1962#endif
1963
1964 postfork = 1; /* must be in line with ev_loop_fork */ 2648 postfork = 1; /* must be in line with ev_default_fork */
1965} 2649}
1966 2650
1967/*****************************************************************************/ 2651/*****************************************************************************/
1968 2652
1969void 2653void
… …
1991 2675
1992 for (pri = NUMPRI; pri--; ) 2676 for (pri = NUMPRI; pri--; )
1993 while (pendingcnt [pri]) 2677 while (pendingcnt [pri])
1994 { 2678 {
1995 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2679 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1996
1997 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1998 /* ^ this is no longer true, as pending_w could be here */
1999 2680
2000 p->w->pending = 0; 2681 p->w->pending = 0;
2001 EV_CB_INVOKE (p->w, p->events); 2682 EV_CB_INVOKE (p->w, p->events);
2002 EV_FREQUENT_CHECK; 2683 EV_FREQUENT_CHECK;
2003 } 2684 }
… …
2060 EV_FREQUENT_CHECK; 2741 EV_FREQUENT_CHECK;
2061 feed_reverse (EV_A_ (W)w); 2742 feed_reverse (EV_A_ (W)w);
2062 } 2743 }
2063 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2744 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2064 2745
2065 feed_reverse_done (EV_A_ EV_TIMEOUT); 2746 feed_reverse_done (EV_A_ EV_TIMER);
2066 } 2747 }
2067} 2748}
2068 2749
2069#if EV_PERIODIC_ENABLE 2750#if EV_PERIODIC_ENABLE
2751
2752static void noinline
2753periodic_recalc (EV_P_ ev_periodic *w)
2754{
2755 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2756 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2757
2758 /* the above almost always errs on the low side */
2759 while (at <= ev_rt_now)
2760 {
2761 ev_tstamp nat = at + w->interval;
2762
2763 /* when resolution fails us, we use ev_rt_now */
2764 if (expect_false (nat == at))
2765 {
2766 at = ev_rt_now;
2767 break;
2768 }
2769
2770 at = nat;
2771 }
2772
2773 ev_at (w) = at;
2774}
2775
2070/* make periodics pending */ 2776/* make periodics pending */
2071inline_size void 2777inline_size void
2072periodics_reify (EV_P) 2778periodics_reify (EV_P)
2073{ 2779{
2074 EV_FREQUENT_CHECK; 2780 EV_FREQUENT_CHECK;
… …
2093 ANHE_at_cache (periodics [HEAP0]); 2799 ANHE_at_cache (periodics [HEAP0]);
2094 downheap (periodics, periodiccnt, HEAP0); 2800 downheap (periodics, periodiccnt, HEAP0);
2095 } 2801 }
2096 else if (w->interval) 2802 else if (w->interval)
2097 { 2803 {
2098 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2804 periodic_recalc (EV_A_ w);
2099 /* if next trigger time is not sufficiently in the future, put it there */
2100 /* this might happen because of floating point inexactness */
2101 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2102 {
2103 ev_at (w) += w->interval;
2104
2105 /* if interval is unreasonably low we might still have a time in the past */
2106 /* so correct this. this will make the periodic very inexact, but the user */
2107 /* has effectively asked to get triggered more often than possible */
2108 if (ev_at (w) < ev_rt_now)
2109 ev_at (w) = ev_rt_now;
2110 }
2111
2112 ANHE_at_cache (periodics [HEAP0]); 2805 ANHE_at_cache (periodics [HEAP0]);
2113 downheap (periodics, periodiccnt, HEAP0); 2806 downheap (periodics, periodiccnt, HEAP0);
2114 } 2807 }
2115 else 2808 else
2116 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2809 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2123 feed_reverse_done (EV_A_ EV_PERIODIC); 2816 feed_reverse_done (EV_A_ EV_PERIODIC);
2124 } 2817 }
2125} 2818}
2126 2819
2127/* simply recalculate all periodics */ 2820/* simply recalculate all periodics */
2128/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2821/* TODO: maybe ensure that at least one event happens when jumping forward? */
2129static void noinline 2822static void noinline ecb_cold
2130periodics_reschedule (EV_P) 2823periodics_reschedule (EV_P)
2131{ 2824{
2132 int i; 2825 int i;
2133 2826
2134 /* adjust periodics after time jump */ 2827 /* adjust periodics after time jump */
… …
2137 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2830 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2138 2831
2139 if (w->reschedule_cb) 2832 if (w->reschedule_cb)
2140 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2833 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2141 else if (w->interval) 2834 else if (w->interval)
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2835 periodic_recalc (EV_A_ w);
2143 2836
2144 ANHE_at_cache (periodics [i]); 2837 ANHE_at_cache (periodics [i]);
2145 } 2838 }
2146 2839
2147 reheap (periodics, periodiccnt); 2840 reheap (periodics, periodiccnt);
2148} 2841}
2149#endif 2842#endif
2150 2843
2151/* adjust all timers by a given offset */ 2844/* adjust all timers by a given offset */
2152static void noinline 2845static void noinline ecb_cold
2153timers_reschedule (EV_P_ ev_tstamp adjust) 2846timers_reschedule (EV_P_ ev_tstamp adjust)
2154{ 2847{
2155 int i; 2848 int i;
2156 2849
2157 for (i = 0; i < timercnt; ++i) 2850 for (i = 0; i < timercnt; ++i)
… …
2161 ANHE_at_cache (*he); 2854 ANHE_at_cache (*he);
2162 } 2855 }
2163} 2856}
2164 2857
2165/* fetch new monotonic and realtime times from the kernel */ 2858/* fetch new monotonic and realtime times from the kernel */
2166/* also detetc if there was a timejump, and act accordingly */ 2859/* also detect if there was a timejump, and act accordingly */
2167inline_speed void 2860inline_speed void
2168time_update (EV_P_ ev_tstamp max_block) 2861time_update (EV_P_ ev_tstamp max_block)
2169{ 2862{
2170#if EV_USE_MONOTONIC 2863#if EV_USE_MONOTONIC
2171 if (expect_true (have_monotonic)) 2864 if (expect_true (have_monotonic))
… …
2194 * doesn't hurt either as we only do this on time-jumps or 2887 * doesn't hurt either as we only do this on time-jumps or
2195 * in the unlikely event of having been preempted here. 2888 * in the unlikely event of having been preempted here.
2196 */ 2889 */
2197 for (i = 4; --i; ) 2890 for (i = 4; --i; )
2198 { 2891 {
2892 ev_tstamp diff;
2199 rtmn_diff = ev_rt_now - mn_now; 2893 rtmn_diff = ev_rt_now - mn_now;
2200 2894
2895 diff = odiff - rtmn_diff;
2896
2201 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2897 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2202 return; /* all is well */ 2898 return; /* all is well */
2203 2899
2204 ev_rt_now = ev_time (); 2900 ev_rt_now = ev_time ();
2205 mn_now = get_clock (); 2901 mn_now = get_clock ();
2206 now_floor = mn_now; 2902 now_floor = mn_now;
… …
2229 mn_now = ev_rt_now; 2925 mn_now = ev_rt_now;
2230 } 2926 }
2231} 2927}
2232 2928
2233void 2929void
2234ev_loop (EV_P_ int flags) 2930ev_run (EV_P_ int flags)
2235{ 2931{
2236#if EV_MINIMAL < 2 2932#if EV_FEATURE_API
2237 ++loop_depth; 2933 ++loop_depth;
2238#endif 2934#endif
2239 2935
2240 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2936 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2241 2937
2242 loop_done = EVUNLOOP_CANCEL; 2938 loop_done = EVBREAK_CANCEL;
2243 2939
2244 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2940 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2245 2941
2246 do 2942 do
2247 { 2943 {
2248#if EV_VERIFY >= 2 2944#if EV_VERIFY >= 2
2249 ev_loop_verify (EV_A); 2945 ev_verify (EV_A);
2250#endif 2946#endif
2251 2947
2252#ifndef _WIN32 2948#ifndef _WIN32
2253 if (expect_false (curpid)) /* penalise the forking check even more */ 2949 if (expect_false (curpid)) /* penalise the forking check even more */
2254 if (expect_false (getpid () != curpid)) 2950 if (expect_false (getpid () != curpid))
… …
2266 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2962 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2267 EV_INVOKE_PENDING; 2963 EV_INVOKE_PENDING;
2268 } 2964 }
2269#endif 2965#endif
2270 2966
2967#if EV_PREPARE_ENABLE
2271 /* queue prepare watchers (and execute them) */ 2968 /* queue prepare watchers (and execute them) */
2272 if (expect_false (preparecnt)) 2969 if (expect_false (preparecnt))
2273 { 2970 {
2274 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2971 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2275 EV_INVOKE_PENDING; 2972 EV_INVOKE_PENDING;
2276 } 2973 }
2974#endif
2277 2975
2278 if (expect_false (loop_done)) 2976 if (expect_false (loop_done))
2279 break; 2977 break;
2280 2978
2281 /* we might have forked, so reify kernel state if necessary */ 2979 /* we might have forked, so reify kernel state if necessary */
… …
2288 /* calculate blocking time */ 2986 /* calculate blocking time */
2289 { 2987 {
2290 ev_tstamp waittime = 0.; 2988 ev_tstamp waittime = 0.;
2291 ev_tstamp sleeptime = 0.; 2989 ev_tstamp sleeptime = 0.;
2292 2990
2991 /* remember old timestamp for io_blocktime calculation */
2992 ev_tstamp prev_mn_now = mn_now;
2993
2994 /* update time to cancel out callback processing overhead */
2995 time_update (EV_A_ 1e100);
2996
2997 /* from now on, we want a pipe-wake-up */
2998 pipe_write_wanted = 1;
2999
3000 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3001
2293 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3002 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2294 { 3003 {
2295 /* remember old timestamp for io_blocktime calculation */
2296 ev_tstamp prev_mn_now = mn_now;
2297
2298 /* update time to cancel out callback processing overhead */
2299 time_update (EV_A_ 1e100);
2300
2301 waittime = MAX_BLOCKTIME; 3004 waittime = MAX_BLOCKTIME;
2302 3005
2303 if (timercnt) 3006 if (timercnt)
2304 { 3007 {
2305 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3008 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2306 if (waittime > to) waittime = to; 3009 if (waittime > to) waittime = to;
2307 } 3010 }
2308 3011
2309#if EV_PERIODIC_ENABLE 3012#if EV_PERIODIC_ENABLE
2310 if (periodiccnt) 3013 if (periodiccnt)
2311 { 3014 {
2312 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3015 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2313 if (waittime > to) waittime = to; 3016 if (waittime > to) waittime = to;
2314 } 3017 }
2315#endif 3018#endif
2316 3019
2317 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3020 /* don't let timeouts decrease the waittime below timeout_blocktime */
2318 if (expect_false (waittime < timeout_blocktime)) 3021 if (expect_false (waittime < timeout_blocktime))
2319 waittime = timeout_blocktime; 3022 waittime = timeout_blocktime;
3023
3024 /* at this point, we NEED to wait, so we have to ensure */
3025 /* to pass a minimum nonzero value to the backend */
3026 if (expect_false (waittime < backend_mintime))
3027 waittime = backend_mintime;
2320 3028
2321 /* extra check because io_blocktime is commonly 0 */ 3029 /* extra check because io_blocktime is commonly 0 */
2322 if (expect_false (io_blocktime)) 3030 if (expect_false (io_blocktime))
2323 { 3031 {
2324 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3032 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2325 3033
2326 if (sleeptime > waittime - backend_fudge) 3034 if (sleeptime > waittime - backend_mintime)
2327 sleeptime = waittime - backend_fudge; 3035 sleeptime = waittime - backend_mintime;
2328 3036
2329 if (expect_true (sleeptime > 0.)) 3037 if (expect_true (sleeptime > 0.))
2330 { 3038 {
2331 ev_sleep (sleeptime); 3039 ev_sleep (sleeptime);
2332 waittime -= sleeptime; 3040 waittime -= sleeptime;
2333 } 3041 }
2334 } 3042 }
2335 } 3043 }
2336 3044
2337#if EV_MINIMAL < 2 3045#if EV_FEATURE_API
2338 ++loop_count; 3046 ++loop_count;
2339#endif 3047#endif
2340 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3048 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2341 backend_poll (EV_A_ waittime); 3049 backend_poll (EV_A_ waittime);
2342 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3050 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3051
3052 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3053
3054 if (pipe_write_skipped)
3055 {
3056 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3057 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3058 }
3059
2343 3060
2344 /* update ev_rt_now, do magic */ 3061 /* update ev_rt_now, do magic */
2345 time_update (EV_A_ waittime + sleeptime); 3062 time_update (EV_A_ waittime + sleeptime);
2346 } 3063 }
2347 3064
… …
2354#if EV_IDLE_ENABLE 3071#if EV_IDLE_ENABLE
2355 /* queue idle watchers unless other events are pending */ 3072 /* queue idle watchers unless other events are pending */
2356 idle_reify (EV_A); 3073 idle_reify (EV_A);
2357#endif 3074#endif
2358 3075
3076#if EV_CHECK_ENABLE
2359 /* queue check watchers, to be executed first */ 3077 /* queue check watchers, to be executed first */
2360 if (expect_false (checkcnt)) 3078 if (expect_false (checkcnt))
2361 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3079 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3080#endif
2362 3081
2363 EV_INVOKE_PENDING; 3082 EV_INVOKE_PENDING;
2364 } 3083 }
2365 while (expect_true ( 3084 while (expect_true (
2366 activecnt 3085 activecnt
2367 && !loop_done 3086 && !loop_done
2368 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3087 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2369 )); 3088 ));
2370 3089
2371 if (loop_done == EVUNLOOP_ONE) 3090 if (loop_done == EVBREAK_ONE)
2372 loop_done = EVUNLOOP_CANCEL; 3091 loop_done = EVBREAK_CANCEL;
2373 3092
2374#if EV_MINIMAL < 2 3093#if EV_FEATURE_API
2375 --loop_depth; 3094 --loop_depth;
2376#endif 3095#endif
2377} 3096}
2378 3097
2379void 3098void
2380ev_unloop (EV_P_ int how) 3099ev_break (EV_P_ int how)
2381{ 3100{
2382 loop_done = how; 3101 loop_done = how;
2383} 3102}
2384 3103
2385void 3104void
… …
2505 3224
2506 if (expect_false (ev_is_active (w))) 3225 if (expect_false (ev_is_active (w)))
2507 return; 3226 return;
2508 3227
2509 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3228 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2510 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3229 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2511 3230
2512 EV_FREQUENT_CHECK; 3231 EV_FREQUENT_CHECK;
2513 3232
2514 ev_start (EV_A_ (W)w, 1); 3233 ev_start (EV_A_ (W)w, 1);
2515 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3234 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2533 EV_FREQUENT_CHECK; 3252 EV_FREQUENT_CHECK;
2534 3253
2535 wlist_del (&anfds[w->fd].head, (WL)w); 3254 wlist_del (&anfds[w->fd].head, (WL)w);
2536 ev_stop (EV_A_ (W)w); 3255 ev_stop (EV_A_ (W)w);
2537 3256
2538 fd_change (EV_A_ w->fd, 1); 3257 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2539 3258
2540 EV_FREQUENT_CHECK; 3259 EV_FREQUENT_CHECK;
2541} 3260}
2542 3261
2543void noinline 3262void noinline
… …
2585 timers [active] = timers [timercnt + HEAP0]; 3304 timers [active] = timers [timercnt + HEAP0];
2586 adjustheap (timers, timercnt, active); 3305 adjustheap (timers, timercnt, active);
2587 } 3306 }
2588 } 3307 }
2589 3308
2590 EV_FREQUENT_CHECK;
2591
2592 ev_at (w) -= mn_now; 3309 ev_at (w) -= mn_now;
2593 3310
2594 ev_stop (EV_A_ (W)w); 3311 ev_stop (EV_A_ (W)w);
3312
3313 EV_FREQUENT_CHECK;
2595} 3314}
2596 3315
2597void noinline 3316void noinline
2598ev_timer_again (EV_P_ ev_timer *w) 3317ev_timer_again (EV_P_ ev_timer *w)
2599{ 3318{
2600 EV_FREQUENT_CHECK; 3319 EV_FREQUENT_CHECK;
3320
3321 clear_pending (EV_A_ (W)w);
2601 3322
2602 if (ev_is_active (w)) 3323 if (ev_is_active (w))
2603 { 3324 {
2604 if (w->repeat) 3325 if (w->repeat)
2605 { 3326 {
… …
2635 if (w->reschedule_cb) 3356 if (w->reschedule_cb)
2636 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3357 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2637 else if (w->interval) 3358 else if (w->interval)
2638 { 3359 {
2639 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3360 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2640 /* this formula differs from the one in periodic_reify because we do not always round up */ 3361 periodic_recalc (EV_A_ w);
2641 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2642 } 3362 }
2643 else 3363 else
2644 ev_at (w) = w->offset; 3364 ev_at (w) = w->offset;
2645 3365
2646 EV_FREQUENT_CHECK; 3366 EV_FREQUENT_CHECK;
… …
2678 periodics [active] = periodics [periodiccnt + HEAP0]; 3398 periodics [active] = periodics [periodiccnt + HEAP0];
2679 adjustheap (periodics, periodiccnt, active); 3399 adjustheap (periodics, periodiccnt, active);
2680 } 3400 }
2681 } 3401 }
2682 3402
2683 EV_FREQUENT_CHECK;
2684
2685 ev_stop (EV_A_ (W)w); 3403 ev_stop (EV_A_ (W)w);
3404
3405 EV_FREQUENT_CHECK;
2686} 3406}
2687 3407
2688void noinline 3408void noinline
2689ev_periodic_again (EV_P_ ev_periodic *w) 3409ev_periodic_again (EV_P_ ev_periodic *w)
2690{ 3410{
… …
2695#endif 3415#endif
2696 3416
2697#ifndef SA_RESTART 3417#ifndef SA_RESTART
2698# define SA_RESTART 0 3418# define SA_RESTART 0
2699#endif 3419#endif
3420
3421#if EV_SIGNAL_ENABLE
2700 3422
2701void noinline 3423void noinline
2702ev_signal_start (EV_P_ ev_signal *w) 3424ev_signal_start (EV_P_ ev_signal *w)
2703{ 3425{
2704 if (expect_false (ev_is_active (w))) 3426 if (expect_false (ev_is_active (w)))
… …
2751 if (!((WL)w)->next) 3473 if (!((WL)w)->next)
2752# if EV_USE_SIGNALFD 3474# if EV_USE_SIGNALFD
2753 if (sigfd < 0) /*TODO*/ 3475 if (sigfd < 0) /*TODO*/
2754# endif 3476# endif
2755 { 3477 {
2756# if _WIN32 3478# ifdef _WIN32
3479 evpipe_init (EV_A);
3480
2757 signal (w->signum, ev_sighandler); 3481 signal (w->signum, ev_sighandler);
2758# else 3482# else
2759 struct sigaction sa; 3483 struct sigaction sa;
2760 3484
2761 evpipe_init (EV_A); 3485 evpipe_init (EV_A);
… …
2763 sa.sa_handler = ev_sighandler; 3487 sa.sa_handler = ev_sighandler;
2764 sigfillset (&sa.sa_mask); 3488 sigfillset (&sa.sa_mask);
2765 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3489 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2766 sigaction (w->signum, &sa, 0); 3490 sigaction (w->signum, &sa, 0);
2767 3491
3492 if (origflags & EVFLAG_NOSIGMASK)
3493 {
2768 sigemptyset (&sa.sa_mask); 3494 sigemptyset (&sa.sa_mask);
2769 sigaddset (&sa.sa_mask, w->signum); 3495 sigaddset (&sa.sa_mask, w->signum);
2770 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3496 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3497 }
2771#endif 3498#endif
2772 } 3499 }
2773 3500
2774 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2775} 3502}
… …
2792 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3519 signals [w->signum - 1].loop = 0; /* unattach from signal */
2793#endif 3520#endif
2794#if EV_USE_SIGNALFD 3521#if EV_USE_SIGNALFD
2795 if (sigfd >= 0) 3522 if (sigfd >= 0)
2796 { 3523 {
2797 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3524 sigset_t ss;
3525
3526 sigemptyset (&ss);
3527 sigaddset (&ss, w->signum);
2798 sigdelset (&sigfd_set, w->signum); 3528 sigdelset (&sigfd_set, w->signum);
3529
2799 signalfd (sigfd, &sigfd_set, 0); 3530 signalfd (sigfd, &sigfd_set, 0);
2800 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3531 sigprocmask (SIG_UNBLOCK, &ss, 0);
2801 /*TODO: maybe unblock signal? */
2802 } 3532 }
2803 else 3533 else
2804#endif 3534#endif
2805 signal (w->signum, SIG_DFL); 3535 signal (w->signum, SIG_DFL);
2806 } 3536 }
2807 3537
2808 EV_FREQUENT_CHECK; 3538 EV_FREQUENT_CHECK;
2809} 3539}
2810 3540
3541#endif
3542
3543#if EV_CHILD_ENABLE
3544
2811void 3545void
2812ev_child_start (EV_P_ ev_child *w) 3546ev_child_start (EV_P_ ev_child *w)
2813{ 3547{
2814#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
2815 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3549 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
… …
2818 return; 3552 return;
2819 3553
2820 EV_FREQUENT_CHECK; 3554 EV_FREQUENT_CHECK;
2821 3555
2822 ev_start (EV_A_ (W)w, 1); 3556 ev_start (EV_A_ (W)w, 1);
2823 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3557 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2824 3558
2825 EV_FREQUENT_CHECK; 3559 EV_FREQUENT_CHECK;
2826} 3560}
2827 3561
2828void 3562void
… …
2832 if (expect_false (!ev_is_active (w))) 3566 if (expect_false (!ev_is_active (w)))
2833 return; 3567 return;
2834 3568
2835 EV_FREQUENT_CHECK; 3569 EV_FREQUENT_CHECK;
2836 3570
2837 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3571 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2838 ev_stop (EV_A_ (W)w); 3572 ev_stop (EV_A_ (W)w);
2839 3573
2840 EV_FREQUENT_CHECK; 3574 EV_FREQUENT_CHECK;
2841} 3575}
3576
3577#endif
2842 3578
2843#if EV_STAT_ENABLE 3579#if EV_STAT_ENABLE
2844 3580
2845# ifdef _WIN32 3581# ifdef _WIN32
2846# undef lstat 3582# undef lstat
… …
2852#define MIN_STAT_INTERVAL 0.1074891 3588#define MIN_STAT_INTERVAL 0.1074891
2853 3589
2854static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3590static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2855 3591
2856#if EV_USE_INOTIFY 3592#if EV_USE_INOTIFY
2857# define EV_INOTIFY_BUFSIZE 8192 3593
3594/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3595# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2858 3596
2859static void noinline 3597static void noinline
2860infy_add (EV_P_ ev_stat *w) 3598infy_add (EV_P_ ev_stat *w)
2861{ 3599{
2862 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); 3600 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);
2863 3601
2864 if (w->wd < 0) 3602 if (w->wd >= 0)
3603 {
3604 struct statfs sfs;
3605
3606 /* now local changes will be tracked by inotify, but remote changes won't */
3607 /* unless the filesystem is known to be local, we therefore still poll */
3608 /* also do poll on <2.6.25, but with normal frequency */
3609
3610 if (!fs_2625)
3611 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3612 else if (!statfs (w->path, &sfs)
3613 && (sfs.f_type == 0x1373 /* devfs */
3614 || sfs.f_type == 0xEF53 /* ext2/3 */
3615 || sfs.f_type == 0x3153464a /* jfs */
3616 || sfs.f_type == 0x52654973 /* reiser3 */
3617 || sfs.f_type == 0x01021994 /* tempfs */
3618 || sfs.f_type == 0x58465342 /* xfs */))
3619 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3620 else
3621 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2865 { 3622 }
3623 else
3624 {
3625 /* can't use inotify, continue to stat */
2866 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3626 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2867 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2868 3627
2869 /* monitor some parent directory for speedup hints */ 3628 /* if path is not there, monitor some parent directory for speedup hints */
2870 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3629 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2871 /* but an efficiency issue only */ 3630 /* but an efficiency issue only */
2872 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3631 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2873 { 3632 {
2874 char path [4096]; 3633 char path [4096];
… …
2884 if (!pend || pend == path) 3643 if (!pend || pend == path)
2885 break; 3644 break;
2886 3645
2887 *pend = 0; 3646 *pend = 0;
2888 w->wd = inotify_add_watch (fs_fd, path, mask); 3647 w->wd = inotify_add_watch (fs_fd, path, mask);
2889 } 3648 }
2890 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3649 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2891 } 3650 }
2892 } 3651 }
2893 3652
2894 if (w->wd >= 0) 3653 if (w->wd >= 0)
2895 {
2896 struct statfs sfs;
2897
2898 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3654 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2899 3655
2900 /* now local changes will be tracked by inotify, but remote changes won't */ 3656 /* now re-arm timer, if required */
2901 /* unless the filesystem it known to be local, we therefore still poll */ 3657 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2902 /* also do poll on <2.6.25, but with normal frequency */
2903
2904 if (fs_2625 && !statfs (w->path, &sfs))
2905 if (sfs.f_type == 0x1373 /* devfs */
2906 || sfs.f_type == 0xEF53 /* ext2/3 */
2907 || sfs.f_type == 0x3153464a /* jfs */
2908 || sfs.f_type == 0x52654973 /* reiser3 */
2909 || sfs.f_type == 0x01021994 /* tempfs */
2910 || sfs.f_type == 0x58465342 /* xfs */)
2911 return;
2912
2913 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2914 ev_timer_again (EV_A_ &w->timer); 3658 ev_timer_again (EV_A_ &w->timer);
2915 } 3659 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2916} 3660}
2917 3661
2918static void noinline 3662static void noinline
2919infy_del (EV_P_ ev_stat *w) 3663infy_del (EV_P_ ev_stat *w)
2920{ 3664{
… …
2923 3667
2924 if (wd < 0) 3668 if (wd < 0)
2925 return; 3669 return;
2926 3670
2927 w->wd = -2; 3671 w->wd = -2;
2928 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3672 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2929 wlist_del (&fs_hash [slot].head, (WL)w); 3673 wlist_del (&fs_hash [slot].head, (WL)w);
2930 3674
2931 /* remove this watcher, if others are watching it, they will rearm */ 3675 /* remove this watcher, if others are watching it, they will rearm */
2932 inotify_rm_watch (fs_fd, wd); 3676 inotify_rm_watch (fs_fd, wd);
2933} 3677}
… …
2935static void noinline 3679static void noinline
2936infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3680infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2937{ 3681{
2938 if (slot < 0) 3682 if (slot < 0)
2939 /* overflow, need to check for all hash slots */ 3683 /* overflow, need to check for all hash slots */
2940 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3684 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2941 infy_wd (EV_A_ slot, wd, ev); 3685 infy_wd (EV_A_ slot, wd, ev);
2942 else 3686 else
2943 { 3687 {
2944 WL w_; 3688 WL w_;
2945 3689
2946 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3690 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2947 { 3691 {
2948 ev_stat *w = (ev_stat *)w_; 3692 ev_stat *w = (ev_stat *)w_;
2949 w_ = w_->next; /* lets us remove this watcher and all before it */ 3693 w_ = w_->next; /* lets us remove this watcher and all before it */
2950 3694
2951 if (w->wd == wd || wd == -1) 3695 if (w->wd == wd || wd == -1)
2952 { 3696 {
2953 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3697 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2954 { 3698 {
2955 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3699 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2956 w->wd = -1; 3700 w->wd = -1;
2957 infy_add (EV_A_ w); /* re-add, no matter what */ 3701 infy_add (EV_A_ w); /* re-add, no matter what */
2958 } 3702 }
2959 3703
2960 stat_timer_cb (EV_A_ &w->timer, 0); 3704 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2965 3709
2966static void 3710static void
2967infy_cb (EV_P_ ev_io *w, int revents) 3711infy_cb (EV_P_ ev_io *w, int revents)
2968{ 3712{
2969 char buf [EV_INOTIFY_BUFSIZE]; 3713 char buf [EV_INOTIFY_BUFSIZE];
2970 struct inotify_event *ev = (struct inotify_event *)buf;
2971 int ofs; 3714 int ofs;
2972 int len = read (fs_fd, buf, sizeof (buf)); 3715 int len = read (fs_fd, buf, sizeof (buf));
2973 3716
2974 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3717 for (ofs = 0; ofs < len; )
3718 {
3719 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2975 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3720 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3721 ofs += sizeof (struct inotify_event) + ev->len;
3722 }
2976} 3723}
2977 3724
2978inline_size void 3725inline_size void ecb_cold
2979check_2625 (EV_P) 3726ev_check_2625 (EV_P)
2980{ 3727{
2981 /* kernels < 2.6.25 are borked 3728 /* kernels < 2.6.25 are borked
2982 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3729 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2983 */ 3730 */
2984 struct utsname buf; 3731 if (ev_linux_version () < 0x020619)
2985 int major, minor, micro;
2986
2987 if (uname (&buf))
2988 return;
2989
2990 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2991 return;
2992
2993 if (major < 2
2994 || (major == 2 && minor < 6)
2995 || (major == 2 && minor == 6 && micro < 25))
2996 return; 3732 return;
2997 3733
2998 fs_2625 = 1; 3734 fs_2625 = 1;
2999} 3735}
3000 3736
… …
3015 if (fs_fd != -2) 3751 if (fs_fd != -2)
3016 return; 3752 return;
3017 3753
3018 fs_fd = -1; 3754 fs_fd = -1;
3019 3755
3020 check_2625 (EV_A); 3756 ev_check_2625 (EV_A);
3021 3757
3022 fs_fd = infy_newfd (); 3758 fs_fd = infy_newfd ();
3023 3759
3024 if (fs_fd >= 0) 3760 if (fs_fd >= 0)
3025 { 3761 {
3026 fd_intern (fs_fd); 3762 fd_intern (fs_fd);
3027 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3763 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3028 ev_set_priority (&fs_w, EV_MAXPRI); 3764 ev_set_priority (&fs_w, EV_MAXPRI);
3029 ev_io_start (EV_A_ &fs_w); 3765 ev_io_start (EV_A_ &fs_w);
3766 ev_unref (EV_A);
3030 } 3767 }
3031} 3768}
3032 3769
3033inline_size void 3770inline_size void
3034infy_fork (EV_P) 3771infy_fork (EV_P)
… …
3036 int slot; 3773 int slot;
3037 3774
3038 if (fs_fd < 0) 3775 if (fs_fd < 0)
3039 return; 3776 return;
3040 3777
3778 ev_ref (EV_A);
3041 ev_io_stop (EV_A_ &fs_w); 3779 ev_io_stop (EV_A_ &fs_w);
3042 close (fs_fd); 3780 close (fs_fd);
3043 fs_fd = infy_newfd (); 3781 fs_fd = infy_newfd ();
3044 3782
3045 if (fs_fd >= 0) 3783 if (fs_fd >= 0)
3046 { 3784 {
3047 fd_intern (fs_fd); 3785 fd_intern (fs_fd);
3048 ev_io_set (&fs_w, fs_fd, EV_READ); 3786 ev_io_set (&fs_w, fs_fd, EV_READ);
3049 ev_io_start (EV_A_ &fs_w); 3787 ev_io_start (EV_A_ &fs_w);
3788 ev_unref (EV_A);
3050 } 3789 }
3051 3790
3052 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3791 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3053 { 3792 {
3054 WL w_ = fs_hash [slot].head; 3793 WL w_ = fs_hash [slot].head;
3055 fs_hash [slot].head = 0; 3794 fs_hash [slot].head = 0;
3056 3795
3057 while (w_) 3796 while (w_)
… …
3062 w->wd = -1; 3801 w->wd = -1;
3063 3802
3064 if (fs_fd >= 0) 3803 if (fs_fd >= 0)
3065 infy_add (EV_A_ w); /* re-add, no matter what */ 3804 infy_add (EV_A_ w); /* re-add, no matter what */
3066 else 3805 else
3806 {
3807 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3808 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3067 ev_timer_again (EV_A_ &w->timer); 3809 ev_timer_again (EV_A_ &w->timer);
3810 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3811 }
3068 } 3812 }
3069 } 3813 }
3070} 3814}
3071 3815
3072#endif 3816#endif
… …
3089static void noinline 3833static void noinline
3090stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3834stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3091{ 3835{
3092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3836 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3093 3837
3094 /* we copy this here each the time so that */ 3838 ev_statdata prev = w->attr;
3095 /* prev has the old value when the callback gets invoked */
3096 w->prev = w->attr;
3097 ev_stat_stat (EV_A_ w); 3839 ev_stat_stat (EV_A_ w);
3098 3840
3099 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3841 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3100 if ( 3842 if (
3101 w->prev.st_dev != w->attr.st_dev 3843 prev.st_dev != w->attr.st_dev
3102 || w->prev.st_ino != w->attr.st_ino 3844 || prev.st_ino != w->attr.st_ino
3103 || w->prev.st_mode != w->attr.st_mode 3845 || prev.st_mode != w->attr.st_mode
3104 || w->prev.st_nlink != w->attr.st_nlink 3846 || prev.st_nlink != w->attr.st_nlink
3105 || w->prev.st_uid != w->attr.st_uid 3847 || prev.st_uid != w->attr.st_uid
3106 || w->prev.st_gid != w->attr.st_gid 3848 || prev.st_gid != w->attr.st_gid
3107 || w->prev.st_rdev != w->attr.st_rdev 3849 || prev.st_rdev != w->attr.st_rdev
3108 || w->prev.st_size != w->attr.st_size 3850 || prev.st_size != w->attr.st_size
3109 || w->prev.st_atime != w->attr.st_atime 3851 || prev.st_atime != w->attr.st_atime
3110 || w->prev.st_mtime != w->attr.st_mtime 3852 || prev.st_mtime != w->attr.st_mtime
3111 || w->prev.st_ctime != w->attr.st_ctime 3853 || prev.st_ctime != w->attr.st_ctime
3112 ) { 3854 ) {
3855 /* we only update w->prev on actual differences */
3856 /* in case we test more often than invoke the callback, */
3857 /* to ensure that prev is always different to attr */
3858 w->prev = prev;
3859
3113 #if EV_USE_INOTIFY 3860 #if EV_USE_INOTIFY
3114 if (fs_fd >= 0) 3861 if (fs_fd >= 0)
3115 { 3862 {
3116 infy_del (EV_A_ w); 3863 infy_del (EV_A_ w);
3117 infy_add (EV_A_ w); 3864 infy_add (EV_A_ w);
… …
3142 3889
3143 if (fs_fd >= 0) 3890 if (fs_fd >= 0)
3144 infy_add (EV_A_ w); 3891 infy_add (EV_A_ w);
3145 else 3892 else
3146#endif 3893#endif
3894 {
3147 ev_timer_again (EV_A_ &w->timer); 3895 ev_timer_again (EV_A_ &w->timer);
3896 ev_unref (EV_A);
3897 }
3148 3898
3149 ev_start (EV_A_ (W)w, 1); 3899 ev_start (EV_A_ (W)w, 1);
3150 3900
3151 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
3152} 3902}
… …
3161 EV_FREQUENT_CHECK; 3911 EV_FREQUENT_CHECK;
3162 3912
3163#if EV_USE_INOTIFY 3913#if EV_USE_INOTIFY
3164 infy_del (EV_A_ w); 3914 infy_del (EV_A_ w);
3165#endif 3915#endif
3916
3917 if (ev_is_active (&w->timer))
3918 {
3919 ev_ref (EV_A);
3166 ev_timer_stop (EV_A_ &w->timer); 3920 ev_timer_stop (EV_A_ &w->timer);
3921 }
3167 3922
3168 ev_stop (EV_A_ (W)w); 3923 ev_stop (EV_A_ (W)w);
3169 3924
3170 EV_FREQUENT_CHECK; 3925 EV_FREQUENT_CHECK;
3171} 3926}
… …
3216 3971
3217 EV_FREQUENT_CHECK; 3972 EV_FREQUENT_CHECK;
3218} 3973}
3219#endif 3974#endif
3220 3975
3976#if EV_PREPARE_ENABLE
3221void 3977void
3222ev_prepare_start (EV_P_ ev_prepare *w) 3978ev_prepare_start (EV_P_ ev_prepare *w)
3223{ 3979{
3224 if (expect_false (ev_is_active (w))) 3980 if (expect_false (ev_is_active (w)))
3225 return; 3981 return;
… …
3251 4007
3252 ev_stop (EV_A_ (W)w); 4008 ev_stop (EV_A_ (W)w);
3253 4009
3254 EV_FREQUENT_CHECK; 4010 EV_FREQUENT_CHECK;
3255} 4011}
4012#endif
3256 4013
4014#if EV_CHECK_ENABLE
3257void 4015void
3258ev_check_start (EV_P_ ev_check *w) 4016ev_check_start (EV_P_ ev_check *w)
3259{ 4017{
3260 if (expect_false (ev_is_active (w))) 4018 if (expect_false (ev_is_active (w)))
3261 return; 4019 return;
… …
3287 4045
3288 ev_stop (EV_A_ (W)w); 4046 ev_stop (EV_A_ (W)w);
3289 4047
3290 EV_FREQUENT_CHECK; 4048 EV_FREQUENT_CHECK;
3291} 4049}
4050#endif
3292 4051
3293#if EV_EMBED_ENABLE 4052#if EV_EMBED_ENABLE
3294void noinline 4053void noinline
3295ev_embed_sweep (EV_P_ ev_embed *w) 4054ev_embed_sweep (EV_P_ ev_embed *w)
3296{ 4055{
3297 ev_loop (w->other, EVLOOP_NONBLOCK); 4056 ev_run (w->other, EVRUN_NOWAIT);
3298} 4057}
3299 4058
3300static void 4059static void
3301embed_io_cb (EV_P_ ev_io *io, int revents) 4060embed_io_cb (EV_P_ ev_io *io, int revents)
3302{ 4061{
3303 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4062 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3304 4063
3305 if (ev_cb (w)) 4064 if (ev_cb (w))
3306 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4065 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3307 else 4066 else
3308 ev_loop (w->other, EVLOOP_NONBLOCK); 4067 ev_run (w->other, EVRUN_NOWAIT);
3309} 4068}
3310 4069
3311static void 4070static void
3312embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4071embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3313{ 4072{
… …
3317 EV_P = w->other; 4076 EV_P = w->other;
3318 4077
3319 while (fdchangecnt) 4078 while (fdchangecnt)
3320 { 4079 {
3321 fd_reify (EV_A); 4080 fd_reify (EV_A);
3322 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4081 ev_run (EV_A_ EVRUN_NOWAIT);
3323 } 4082 }
3324 } 4083 }
3325} 4084}
3326 4085
3327static void 4086static void
… …
3333 4092
3334 { 4093 {
3335 EV_P = w->other; 4094 EV_P = w->other;
3336 4095
3337 ev_loop_fork (EV_A); 4096 ev_loop_fork (EV_A);
3338 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4097 ev_run (EV_A_ EVRUN_NOWAIT);
3339 } 4098 }
3340 4099
3341 ev_embed_start (EV_A_ w); 4100 ev_embed_start (EV_A_ w);
3342} 4101}
3343 4102
… …
3391 4150
3392 ev_io_stop (EV_A_ &w->io); 4151 ev_io_stop (EV_A_ &w->io);
3393 ev_prepare_stop (EV_A_ &w->prepare); 4152 ev_prepare_stop (EV_A_ &w->prepare);
3394 ev_fork_stop (EV_A_ &w->fork); 4153 ev_fork_stop (EV_A_ &w->fork);
3395 4154
4155 ev_stop (EV_A_ (W)w);
4156
3396 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3397} 4158}
3398#endif 4159#endif
3399 4160
3400#if EV_FORK_ENABLE 4161#if EV_FORK_ENABLE
… …
3433 4194
3434 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
3435} 4196}
3436#endif 4197#endif
3437 4198
4199#if EV_CLEANUP_ENABLE
4200void
4201ev_cleanup_start (EV_P_ ev_cleanup *w)
4202{
4203 if (expect_false (ev_is_active (w)))
4204 return;
4205
4206 EV_FREQUENT_CHECK;
4207
4208 ev_start (EV_A_ (W)w, ++cleanupcnt);
4209 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4210 cleanups [cleanupcnt - 1] = w;
4211
4212 /* cleanup watchers should never keep a refcount on the loop */
4213 ev_unref (EV_A);
4214 EV_FREQUENT_CHECK;
4215}
4216
4217void
4218ev_cleanup_stop (EV_P_ ev_cleanup *w)
4219{
4220 clear_pending (EV_A_ (W)w);
4221 if (expect_false (!ev_is_active (w)))
4222 return;
4223
4224 EV_FREQUENT_CHECK;
4225 ev_ref (EV_A);
4226
4227 {
4228 int active = ev_active (w);
4229
4230 cleanups [active - 1] = cleanups [--cleanupcnt];
4231 ev_active (cleanups [active - 1]) = active;
4232 }
4233
4234 ev_stop (EV_A_ (W)w);
4235
4236 EV_FREQUENT_CHECK;
4237}
4238#endif
4239
3438#if EV_ASYNC_ENABLE 4240#if EV_ASYNC_ENABLE
3439void 4241void
3440ev_async_start (EV_P_ ev_async *w) 4242ev_async_start (EV_P_ ev_async *w)
3441{ 4243{
3442 if (expect_false (ev_is_active (w))) 4244 if (expect_false (ev_is_active (w)))
3443 return; 4245 return;
4246
4247 w->sent = 0;
3444 4248
3445 evpipe_init (EV_A); 4249 evpipe_init (EV_A);
3446 4250
3447 EV_FREQUENT_CHECK; 4251 EV_FREQUENT_CHECK;
3448 4252
… …
3526{ 4330{
3527 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4331 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3528 4332
3529 if (expect_false (!once)) 4333 if (expect_false (!once))
3530 { 4334 {
3531 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4335 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3532 return; 4336 return;
3533 } 4337 }
3534 4338
3535 once->cb = cb; 4339 once->cb = cb;
3536 once->arg = arg; 4340 once->arg = arg;
… …
3551} 4355}
3552 4356
3553/*****************************************************************************/ 4357/*****************************************************************************/
3554 4358
3555#if EV_WALK_ENABLE 4359#if EV_WALK_ENABLE
3556void 4360void ecb_cold
3557ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4361ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3558{ 4362{
3559 int i, j; 4363 int i, j;
3560 ev_watcher_list *wl, *wn; 4364 ev_watcher_list *wl, *wn;
3561 4365
… …
3605 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4409 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3606#endif 4410#endif
3607 4411
3608#if EV_IDLE_ENABLE 4412#if EV_IDLE_ENABLE
3609 if (types & EV_IDLE) 4413 if (types & EV_IDLE)
3610 for (j = NUMPRI; i--; ) 4414 for (j = NUMPRI; j--; )
3611 for (i = idlecnt [j]; i--; ) 4415 for (i = idlecnt [j]; i--; )
3612 cb (EV_A_ EV_IDLE, idles [j][i]); 4416 cb (EV_A_ EV_IDLE, idles [j][i]);
3613#endif 4417#endif
3614 4418
3615#if EV_FORK_ENABLE 4419#if EV_FORK_ENABLE
… …
3623 if (types & EV_ASYNC) 4427 if (types & EV_ASYNC)
3624 for (i = asynccnt; i--; ) 4428 for (i = asynccnt; i--; )
3625 cb (EV_A_ EV_ASYNC, asyncs [i]); 4429 cb (EV_A_ EV_ASYNC, asyncs [i]);
3626#endif 4430#endif
3627 4431
4432#if EV_PREPARE_ENABLE
3628 if (types & EV_PREPARE) 4433 if (types & EV_PREPARE)
3629 for (i = preparecnt; i--; ) 4434 for (i = preparecnt; i--; )
3630#if EV_EMBED_ENABLE 4435# if EV_EMBED_ENABLE
3631 if (ev_cb (prepares [i]) != embed_prepare_cb) 4436 if (ev_cb (prepares [i]) != embed_prepare_cb)
3632#endif 4437# endif
3633 cb (EV_A_ EV_PREPARE, prepares [i]); 4438 cb (EV_A_ EV_PREPARE, prepares [i]);
4439#endif
3634 4440
4441#if EV_CHECK_ENABLE
3635 if (types & EV_CHECK) 4442 if (types & EV_CHECK)
3636 for (i = checkcnt; i--; ) 4443 for (i = checkcnt; i--; )
3637 cb (EV_A_ EV_CHECK, checks [i]); 4444 cb (EV_A_ EV_CHECK, checks [i]);
4445#endif
3638 4446
4447#if EV_SIGNAL_ENABLE
3639 if (types & EV_SIGNAL) 4448 if (types & EV_SIGNAL)
3640 for (i = 0; i < EV_NSIG - 1; ++i) 4449 for (i = 0; i < EV_NSIG - 1; ++i)
3641 for (wl = signals [i].head; wl; ) 4450 for (wl = signals [i].head; wl; )
3642 { 4451 {
3643 wn = wl->next; 4452 wn = wl->next;
3644 cb (EV_A_ EV_SIGNAL, wl); 4453 cb (EV_A_ EV_SIGNAL, wl);
3645 wl = wn; 4454 wl = wn;
3646 } 4455 }
4456#endif
3647 4457
4458#if EV_CHILD_ENABLE
3648 if (types & EV_CHILD) 4459 if (types & EV_CHILD)
3649 for (i = EV_PID_HASHSIZE; i--; ) 4460 for (i = (EV_PID_HASHSIZE); i--; )
3650 for (wl = childs [i]; wl; ) 4461 for (wl = childs [i]; wl; )
3651 { 4462 {
3652 wn = wl->next; 4463 wn = wl->next;
3653 cb (EV_A_ EV_CHILD, wl); 4464 cb (EV_A_ EV_CHILD, wl);
3654 wl = wn; 4465 wl = wn;
3655 } 4466 }
4467#endif
3656/* EV_STAT 0x00001000 /* stat data changed */ 4468/* EV_STAT 0x00001000 /* stat data changed */
3657/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4469/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3658} 4470}
3659#endif 4471#endif
3660 4472
3661#if EV_MULTIPLICITY 4473#if EV_MULTIPLICITY
3662 #include "ev_wrap.h" 4474 #include "ev_wrap.h"
3663#endif 4475#endif
3664 4476
3665#ifdef __cplusplus
3666}
3667#endif
3668

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