ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.316 by root, Fri Sep 18 21:02:12 2009 UTC vs.
Revision 1.412 by root, Wed Feb 22 01:53:00 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
174#endif 197#endif
175 198
176#ifndef _WIN32 199#ifndef _WIN32
177# include <sys/time.h> 200# include <sys/time.h>
178# include <sys/wait.h> 201# include <sys/wait.h>
… …
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
183# include <windows.h> 206# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
186# endif 209# endif
210# undef EV_AVOID_STDIO
187#endif 211#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
188 220
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
190 222
191/* try to deduce the maximum number of signals on this platform */ 223/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 224#if defined (EV_NSIG)
… …
204#elif defined (MAXSIG) 236#elif defined (MAXSIG)
205# define EV_NSIG (MAXSIG+1) 237# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 238#elif defined (MAX_SIG)
207# define EV_NSIG (MAX_SIG+1) 239# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 240#elif defined (SIGARRAYSIZE)
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 242#elif defined (_sys_nsig)
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 244#else
213# error "unable to find value for NSIG, please report" 245# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */ 246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
215# define EV_NSIG 65 248# define EV_NSIG 65
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
216#endif 253#endif
217 254
218#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 258# else
222# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
223# endif 260# endif
224#endif 261#endif
225 262
226#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 266# else
230# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
231# endif 268# endif
232#endif 269#endif
233 270
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 273#endif
237 274
238#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 278# else
242# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
243# endif 280# endif
244#endif 281#endif
245 282
246#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 285#endif
249 286
250#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
251# ifdef _WIN32 288# ifdef _WIN32
252# define EV_USE_POLL 0 289# define EV_USE_POLL 0
253# else 290# else
254# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 292# endif
256#endif 293#endif
257 294
258#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 298# else
262# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
263# endif 300# endif
264#endif 301#endif
265 302
… …
271# define EV_USE_PORT 0 308# define EV_USE_PORT 0
272#endif 309#endif
273 310
274#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 314# else
278# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
279# endif 316# endif
280#endif 317#endif
281 318
282#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 321#endif
289 322
290#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 325#endif
297 326
298#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 330# else
302# define EV_USE_EVENTFD 0 331# define EV_USE_EVENTFD 0
303# endif 332# endif
304#endif 333#endif
305 334
306#ifndef EV_USE_SIGNALFD 335#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 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 #elif defined(__mips__)
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #endif
585 #endif
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
590 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined(_WIN32)
599 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
606 #endif
607#endif
608
609#ifndef ECB_MEMORY_FENCE
610 #if !ECB_AVOID_PTHREADS
611 /*
612 * if you get undefined symbol references to pthread_mutex_lock,
613 * or failure to find pthread.h, then you should implement
614 * the ECB_MEMORY_FENCE operations for your cpu/compiler
615 * OR provide pthread.h and link against the posix thread library
616 * of your system.
617 */
618 #include <pthread.h>
619 #define ECB_NEEDS_PTHREADS 1
620 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
621
622 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
623 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
624 #endif
625#endif
626
627#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
628 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
629#endif
630
631#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
632 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
633#endif
634
635/*****************************************************************************/
636
637#define ECB_C99 (__STDC_VERSION__ >= 199901L)
638
639#if __cplusplus
640 #define ecb_inline static inline
641#elif ECB_GCC_VERSION(2,5)
642 #define ecb_inline static __inline__
643#elif ECB_C99
644 #define ecb_inline static inline
645#else
646 #define ecb_inline static
647#endif
648
649#if ECB_GCC_VERSION(3,3)
650 #define ecb_restrict __restrict__
651#elif ECB_C99
652 #define ecb_restrict restrict
653#else
654 #define ecb_restrict
655#endif
656
657typedef int ecb_bool;
658
659#define ECB_CONCAT_(a, b) a ## b
660#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
661#define ECB_STRINGIFY_(a) # a
662#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
663
664#define ecb_function_ ecb_inline
665
666#if ECB_GCC_VERSION(3,1)
667 #define ecb_attribute(attrlist) __attribute__(attrlist)
668 #define ecb_is_constant(expr) __builtin_constant_p (expr)
669 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
670 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
671#else
672 #define ecb_attribute(attrlist)
673 #define ecb_is_constant(expr) 0
674 #define ecb_expect(expr,value) (expr)
675 #define ecb_prefetch(addr,rw,locality)
676#endif
677
678/* no emulation for ecb_decltype */
679#if ECB_GCC_VERSION(4,5)
680 #define ecb_decltype(x) __decltype(x)
681#elif ECB_GCC_VERSION(3,0)
682 #define ecb_decltype(x) __typeof(x)
683#endif
684
685#define ecb_noinline ecb_attribute ((__noinline__))
686#define ecb_noreturn ecb_attribute ((__noreturn__))
687#define ecb_unused ecb_attribute ((__unused__))
688#define ecb_const ecb_attribute ((__const__))
689#define ecb_pure ecb_attribute ((__pure__))
690
691#if ECB_GCC_VERSION(4,3)
692 #define ecb_artificial ecb_attribute ((__artificial__))
693 #define ecb_hot ecb_attribute ((__hot__))
694 #define ecb_cold ecb_attribute ((__cold__))
695#else
696 #define ecb_artificial
697 #define ecb_hot
698 #define ecb_cold
699#endif
700
701/* put around conditional expressions if you are very sure that the */
702/* expression is mostly true or mostly false. note that these return */
703/* booleans, not the expression. */
467#define expect_false(expr) expect ((expr) != 0, 0) 704#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
468#define expect_true(expr) expect ((expr) != 0, 1) 705#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
706/* for compatibility to the rest of the world */
707#define ecb_likely(expr) ecb_expect_true (expr)
708#define ecb_unlikely(expr) ecb_expect_false (expr)
709
710/* count trailing zero bits and count # of one bits */
711#if ECB_GCC_VERSION(3,4)
712 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
713 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
714 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
715 #define ecb_ctz32(x) __builtin_ctz (x)
716 #define ecb_ctz64(x) __builtin_ctzll (x)
717 #define ecb_popcount32(x) __builtin_popcount (x)
718 /* no popcountll */
719#else
720 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
721 ecb_function_ int
722 ecb_ctz32 (uint32_t x)
723 {
724 int r = 0;
725
726 x &= ~x + 1; /* this isolates the lowest bit */
727
728#if ECB_branchless_on_i386
729 r += !!(x & 0xaaaaaaaa) << 0;
730 r += !!(x & 0xcccccccc) << 1;
731 r += !!(x & 0xf0f0f0f0) << 2;
732 r += !!(x & 0xff00ff00) << 3;
733 r += !!(x & 0xffff0000) << 4;
734#else
735 if (x & 0xaaaaaaaa) r += 1;
736 if (x & 0xcccccccc) r += 2;
737 if (x & 0xf0f0f0f0) r += 4;
738 if (x & 0xff00ff00) r += 8;
739 if (x & 0xffff0000) r += 16;
740#endif
741
742 return r;
743 }
744
745 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
746 ecb_function_ int
747 ecb_ctz64 (uint64_t x)
748 {
749 int shift = x & 0xffffffffU ? 0 : 32;
750 return ecb_ctz32 (x >> shift) + shift;
751 }
752
753 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
754 ecb_function_ int
755 ecb_popcount32 (uint32_t x)
756 {
757 x -= (x >> 1) & 0x55555555;
758 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
759 x = ((x >> 4) + x) & 0x0f0f0f0f;
760 x *= 0x01010101;
761
762 return x >> 24;
763 }
764
765 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
766 ecb_function_ int ecb_ld32 (uint32_t x)
767 {
768 int r = 0;
769
770 if (x >> 16) { x >>= 16; r += 16; }
771 if (x >> 8) { x >>= 8; r += 8; }
772 if (x >> 4) { x >>= 4; r += 4; }
773 if (x >> 2) { x >>= 2; r += 2; }
774 if (x >> 1) { r += 1; }
775
776 return r;
777 }
778
779 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
780 ecb_function_ int ecb_ld64 (uint64_t x)
781 {
782 int r = 0;
783
784 if (x >> 32) { x >>= 32; r += 32; }
785
786 return r + ecb_ld32 (x);
787 }
788#endif
789
790ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
792{
793 return ( (x * 0x0802U & 0x22110U)
794 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
795}
796
797ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
799{
800 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
801 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
802 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
803 x = ( x >> 8 ) | ( x << 8);
804
805 return x;
806}
807
808ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
810{
811 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
812 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
813 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
814 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
815 x = ( x >> 16 ) | ( x << 16);
816
817 return x;
818}
819
820/* popcount64 is only available on 64 bit cpus as gcc builtin */
821/* so for this version we are lazy */
822ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
823ecb_function_ int
824ecb_popcount64 (uint64_t x)
825{
826 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
827}
828
829ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
830ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
831ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
832ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
833ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
834ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
835ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
836ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
837
838ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
839ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
840ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
841ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
842ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
843ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
844ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
845ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
846
847#if ECB_GCC_VERSION(4,3)
848 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
849 #define ecb_bswap32(x) __builtin_bswap32 (x)
850 #define ecb_bswap64(x) __builtin_bswap64 (x)
851#else
852 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
853 ecb_function_ uint16_t
854 ecb_bswap16 (uint16_t x)
855 {
856 return ecb_rotl16 (x, 8);
857 }
858
859 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
860 ecb_function_ uint32_t
861 ecb_bswap32 (uint32_t x)
862 {
863 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
864 }
865
866 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
867 ecb_function_ uint64_t
868 ecb_bswap64 (uint64_t x)
869 {
870 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
871 }
872#endif
873
874#if ECB_GCC_VERSION(4,5)
875 #define ecb_unreachable() __builtin_unreachable ()
876#else
877 /* this seems to work fine, but gcc always emits a warning for it :/ */
878 ecb_inline void ecb_unreachable (void) ecb_noreturn;
879 ecb_inline void ecb_unreachable (void) { }
880#endif
881
882/* try to tell the compiler that some condition is definitely true */
883#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
884
885ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
886ecb_inline unsigned char
887ecb_byteorder_helper (void)
888{
889 const uint32_t u = 0x11223344;
890 return *(unsigned char *)&u;
891}
892
893ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
894ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
895ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
896ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
897
898#if ECB_GCC_VERSION(3,0) || ECB_C99
899 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
900#else
901 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
902#endif
903
904#if __cplusplus
905 template<typename T>
906 static inline T ecb_div_rd (T val, T div)
907 {
908 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
909 }
910 template<typename T>
911 static inline T ecb_div_ru (T val, T div)
912 {
913 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
914 }
915#else
916 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
917 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
918#endif
919
920#if ecb_cplusplus_does_not_suck
921 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
922 template<typename T, int N>
923 static inline int ecb_array_length (const T (&arr)[N])
924 {
925 return N;
926 }
927#else
928 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
929#endif
930
931#endif
932
933/* ECB.H END */
934
935#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
936/* if your architecture doesn't need memory fences, e.g. because it is
937 * single-cpu/core, or if you use libev in a project that doesn't use libev
938 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
939 * libev, in which cases the memory fences become nops.
940 * alternatively, you can remove this #error and link against libpthread,
941 * which will then provide the memory fences.
942 */
943# error "memory fences not defined for your architecture, please report"
944#endif
945
946#ifndef ECB_MEMORY_FENCE
947# define ECB_MEMORY_FENCE do { } while (0)
948# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
949# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
950#endif
951
952#define expect_false(cond) ecb_expect_false (cond)
953#define expect_true(cond) ecb_expect_true (cond)
954#define noinline ecb_noinline
955
469#define inline_size static inline 956#define inline_size ecb_inline
470 957
471#if EV_MINIMAL 958#if EV_FEATURE_CODE
959# define inline_speed ecb_inline
960#else
472# define inline_speed static noinline 961# define inline_speed static noinline
473#else
474# define inline_speed static inline
475#endif 962#endif
476 963
477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 964#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478 965
479#if EV_MINPRI == EV_MAXPRI 966#if EV_MINPRI == EV_MAXPRI
… …
492#define ev_active(w) ((W)(w))->active 979#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at 980#define ev_at(w) ((WT)(w))->at
494 981
495#if EV_USE_REALTIME 982#if EV_USE_REALTIME
496/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 983/* sig_atomic_t is used to avoid per-thread variables or locking but still */
497/* giving it a reasonably high chance of working on typical architetcures */ 984/* giving it a reasonably high chance of working on typical architectures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 985static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif 986#endif
500 987
501#if EV_USE_MONOTONIC 988#if EV_USE_MONOTONIC
502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 989static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
504 991
505#ifndef EV_FD_TO_WIN32_HANDLE 992#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 993# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 994#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 995#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 996# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 997#endif
511#ifndef EV_WIN32_CLOSE_FD 998#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 999# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 1000#endif
514 1001
… …
516# include "ev_win32.c" 1003# include "ev_win32.c"
517#endif 1004#endif
518 1005
519/*****************************************************************************/ 1006/*****************************************************************************/
520 1007
1008/* define a suitable floor function (only used by periodics atm) */
1009
1010#if EV_USE_FLOOR
1011# include <math.h>
1012# define ev_floor(v) floor (v)
1013#else
1014
1015#include <float.h>
1016
1017/* a floor() replacement function, should be independent of ev_tstamp type */
1018static ev_tstamp noinline
1019ev_floor (ev_tstamp v)
1020{
1021 /* the choice of shift factor is not terribly important */
1022#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1023 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1024#else
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1026#endif
1027
1028 /* argument too large for an unsigned long? */
1029 if (expect_false (v >= shift))
1030 {
1031 ev_tstamp f;
1032
1033 if (v == v - 1.)
1034 return v; /* very large number */
1035
1036 f = shift * ev_floor (v * (1. / shift));
1037 return f + ev_floor (v - f);
1038 }
1039
1040 /* special treatment for negative args? */
1041 if (expect_false (v < 0.))
1042 {
1043 ev_tstamp f = -ev_floor (-v);
1044
1045 return f - (f == v ? 0 : 1);
1046 }
1047
1048 /* fits into an unsigned long */
1049 return (unsigned long)v;
1050}
1051
1052#endif
1053
1054/*****************************************************************************/
1055
1056#ifdef __linux
1057# include <sys/utsname.h>
1058#endif
1059
1060static unsigned int noinline ecb_cold
1061ev_linux_version (void)
1062{
1063#ifdef __linux
1064 unsigned int v = 0;
1065 struct utsname buf;
1066 int i;
1067 char *p = buf.release;
1068
1069 if (uname (&buf))
1070 return 0;
1071
1072 for (i = 3+1; --i; )
1073 {
1074 unsigned int c = 0;
1075
1076 for (;;)
1077 {
1078 if (*p >= '0' && *p <= '9')
1079 c = c * 10 + *p++ - '0';
1080 else
1081 {
1082 p += *p == '.';
1083 break;
1084 }
1085 }
1086
1087 v = (v << 8) | c;
1088 }
1089
1090 return v;
1091#else
1092 return 0;
1093#endif
1094}
1095
1096/*****************************************************************************/
1097
1098#if EV_AVOID_STDIO
1099static void noinline ecb_cold
1100ev_printerr (const char *msg)
1101{
1102 write (STDERR_FILENO, msg, strlen (msg));
1103}
1104#endif
1105
521static void (*syserr_cb)(const char *msg); 1106static void (*syserr_cb)(const char *msg);
522 1107
523void 1108void ecb_cold
524ev_set_syserr_cb (void (*cb)(const char *msg)) 1109ev_set_syserr_cb (void (*cb)(const char *msg))
525{ 1110{
526 syserr_cb = cb; 1111 syserr_cb = cb;
527} 1112}
528 1113
529static void noinline 1114static void noinline ecb_cold
530ev_syserr (const char *msg) 1115ev_syserr (const char *msg)
531{ 1116{
532 if (!msg) 1117 if (!msg)
533 msg = "(libev) system error"; 1118 msg = "(libev) system error";
534 1119
535 if (syserr_cb) 1120 if (syserr_cb)
536 syserr_cb (msg); 1121 syserr_cb (msg);
537 else 1122 else
538 { 1123 {
1124#if EV_AVOID_STDIO
1125 ev_printerr (msg);
1126 ev_printerr (": ");
1127 ev_printerr (strerror (errno));
1128 ev_printerr ("\n");
1129#else
539 perror (msg); 1130 perror (msg);
1131#endif
540 abort (); 1132 abort ();
541 } 1133 }
542} 1134}
543 1135
544static void * 1136static void *
545ev_realloc_emul (void *ptr, long size) 1137ev_realloc_emul (void *ptr, long size)
546{ 1138{
1139#if __GLIBC__
1140 return realloc (ptr, size);
1141#else
547 /* some systems, notably openbsd and darwin, fail to properly 1142 /* some systems, notably openbsd and darwin, fail to properly
548 * implement realloc (x, 0) (as required by both ansi c-98 and 1143 * implement realloc (x, 0) (as required by both ansi c-89 and
549 * the single unix specification, so work around them here. 1144 * the single unix specification, so work around them here.
550 */ 1145 */
551 1146
552 if (size) 1147 if (size)
553 return realloc (ptr, size); 1148 return realloc (ptr, size);
554 1149
555 free (ptr); 1150 free (ptr);
556 return 0; 1151 return 0;
1152#endif
557} 1153}
558 1154
559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1155static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
560 1156
561void 1157void ecb_cold
562ev_set_allocator (void *(*cb)(void *ptr, long size)) 1158ev_set_allocator (void *(*cb)(void *ptr, long size))
563{ 1159{
564 alloc = cb; 1160 alloc = cb;
565} 1161}
566 1162
… …
569{ 1165{
570 ptr = alloc (ptr, size); 1166 ptr = alloc (ptr, size);
571 1167
572 if (!ptr && size) 1168 if (!ptr && size)
573 { 1169 {
1170#if EV_AVOID_STDIO
1171 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1172#else
574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1173 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1174#endif
575 abort (); 1175 abort ();
576 } 1176 }
577 1177
578 return ptr; 1178 return ptr;
579} 1179}
… …
595 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1195 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
596 unsigned char unused; 1196 unsigned char unused;
597#if EV_USE_EPOLL 1197#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */ 1198 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif 1199#endif
600#if EV_SELECT_IS_WINSOCKET 1200#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
601 SOCKET handle; 1201 SOCKET handle;
1202#endif
1203#if EV_USE_IOCP
1204 OVERLAPPED or, ow;
602#endif 1205#endif
603} ANFD; 1206} ANFD;
604 1207
605/* stores the pending event set for a given watcher */ 1208/* stores the pending event set for a given watcher */
606typedef struct 1209typedef struct
… …
648 #undef VAR 1251 #undef VAR
649 }; 1252 };
650 #include "ev_wrap.h" 1253 #include "ev_wrap.h"
651 1254
652 static struct ev_loop default_loop_struct; 1255 static struct ev_loop default_loop_struct;
653 struct ev_loop *ev_default_loop_ptr; 1256 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
654 1257
655#else 1258#else
656 1259
657 ev_tstamp ev_rt_now; 1260 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
658 #define VAR(name,decl) static decl; 1261 #define VAR(name,decl) static decl;
659 #include "ev_vars.h" 1262 #include "ev_vars.h"
660 #undef VAR 1263 #undef VAR
661 1264
662 static int ev_default_loop_ptr; 1265 static int ev_default_loop_ptr;
663 1266
664#endif 1267#endif
665 1268
666#if EV_MINIMAL < 2 1269#if EV_FEATURE_API
667# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1270# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
668# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1271# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
669# define EV_INVOKE_PENDING invoke_cb (EV_A) 1272# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else 1273#else
671# define EV_RELEASE_CB (void)0 1274# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0 1275# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1276# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif 1277#endif
675 1278
676#define EVUNLOOP_RECURSE 0x80 1279#define EVBREAK_RECURSE 0x80
677 1280
678/*****************************************************************************/ 1281/*****************************************************************************/
679 1282
680#ifndef EV_HAVE_EV_TIME 1283#ifndef EV_HAVE_EV_TIME
681ev_tstamp 1284ev_tstamp
… …
725 if (delay > 0.) 1328 if (delay > 0.)
726 { 1329 {
727#if EV_USE_NANOSLEEP 1330#if EV_USE_NANOSLEEP
728 struct timespec ts; 1331 struct timespec ts;
729 1332
730 ts.tv_sec = (time_t)delay; 1333 EV_TS_SET (ts, delay);
731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
732
733 nanosleep (&ts, 0); 1334 nanosleep (&ts, 0);
734#elif defined(_WIN32) 1335#elif defined(_WIN32)
735 Sleep ((unsigned long)(delay * 1e3)); 1336 Sleep ((unsigned long)(delay * 1e3));
736#else 1337#else
737 struct timeval tv; 1338 struct timeval tv;
738 1339
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 */ 1340 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
743 /* something not guaranteed by newer posix versions, but guaranteed */ 1341 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */ 1342 /* by older ones */
1343 EV_TV_SET (tv, delay);
745 select (0, 0, 0, 0, &tv); 1344 select (0, 0, 0, 0, &tv);
746#endif 1345#endif
747 } 1346 }
748} 1347}
749 1348
750/*****************************************************************************/ 1349/*****************************************************************************/
751 1350
752#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1351#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
753 1352
754/* find a suitable new size for the given array, */ 1353/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */ 1354/* hopefully by rounding to a nice-to-malloc size */
756inline_size int 1355inline_size int
757array_nextsize (int elem, int cur, int cnt) 1356array_nextsize (int elem, int cur, int cnt)
758{ 1357{
759 int ncur = cur + 1; 1358 int ncur = cur + 1;
760 1359
761 do 1360 do
762 ncur <<= 1; 1361 ncur <<= 1;
763 while (cnt > ncur); 1362 while (cnt > ncur);
764 1363
765 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1364 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
766 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1365 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
767 { 1366 {
768 ncur *= elem; 1367 ncur *= elem;
769 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1368 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
770 ncur = ncur - sizeof (void *) * 4; 1369 ncur = ncur - sizeof (void *) * 4;
… …
772 } 1371 }
773 1372
774 return ncur; 1373 return ncur;
775} 1374}
776 1375
777static noinline void * 1376static void * noinline ecb_cold
778array_realloc (int elem, void *base, int *cur, int cnt) 1377array_realloc (int elem, void *base, int *cur, int cnt)
779{ 1378{
780 *cur = array_nextsize (elem, *cur, cnt); 1379 *cur = array_nextsize (elem, *cur, cnt);
781 return ev_realloc (base, elem * *cur); 1380 return ev_realloc (base, elem * *cur);
782} 1381}
… …
785 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1384 memset ((void *)(base), 0, sizeof (*(base)) * (count))
786 1385
787#define array_needsize(type,base,cur,cnt,init) \ 1386#define array_needsize(type,base,cur,cnt,init) \
788 if (expect_false ((cnt) > (cur))) \ 1387 if (expect_false ((cnt) > (cur))) \
789 { \ 1388 { \
790 int ocur_ = (cur); \ 1389 int ecb_unused ocur_ = (cur); \
791 (base) = (type *)array_realloc \ 1390 (base) = (type *)array_realloc \
792 (sizeof (type), (base), &(cur), (cnt)); \ 1391 (sizeof (type), (base), &(cur), (cnt)); \
793 init ((base) + (ocur_), (cur) - ocur_); \ 1392 init ((base) + (ocur_), (cur) - ocur_); \
794 } 1393 }
795 1394
… …
856} 1455}
857 1456
858/*****************************************************************************/ 1457/*****************************************************************************/
859 1458
860inline_speed void 1459inline_speed void
861fd_event_nc (EV_P_ int fd, int revents) 1460fd_event_nocheck (EV_P_ int fd, int revents)
862{ 1461{
863 ANFD *anfd = anfds + fd; 1462 ANFD *anfd = anfds + fd;
864 ev_io *w; 1463 ev_io *w;
865 1464
866 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1465 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
878fd_event (EV_P_ int fd, int revents) 1477fd_event (EV_P_ int fd, int revents)
879{ 1478{
880 ANFD *anfd = anfds + fd; 1479 ANFD *anfd = anfds + fd;
881 1480
882 if (expect_true (!anfd->reify)) 1481 if (expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents); 1482 fd_event_nocheck (EV_A_ fd, revents);
884} 1483}
885 1484
886void 1485void
887ev_feed_fd_event (EV_P_ int fd, int revents) 1486ev_feed_fd_event (EV_P_ int fd, int revents)
888{ 1487{
889 if (fd >= 0 && fd < anfdmax) 1488 if (fd >= 0 && fd < anfdmax)
890 fd_event_nc (EV_A_ fd, revents); 1489 fd_event_nocheck (EV_A_ fd, revents);
891} 1490}
892 1491
893/* make sure the external fd watch events are in-sync */ 1492/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */ 1493/* with the kernel/libev internal state */
895inline_size void 1494inline_size void
896fd_reify (EV_P) 1495fd_reify (EV_P)
897{ 1496{
898 int i; 1497 int i;
899 1498
1499#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1500 for (i = 0; i < fdchangecnt; ++i)
1501 {
1502 int fd = fdchanges [i];
1503 ANFD *anfd = anfds + fd;
1504
1505 if (anfd->reify & EV__IOFDSET && anfd->head)
1506 {
1507 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1508
1509 if (handle != anfd->handle)
1510 {
1511 unsigned long arg;
1512
1513 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1514
1515 /* handle changed, but fd didn't - we need to do it in two steps */
1516 backend_modify (EV_A_ fd, anfd->events, 0);
1517 anfd->events = 0;
1518 anfd->handle = handle;
1519 }
1520 }
1521 }
1522#endif
1523
900 for (i = 0; i < fdchangecnt; ++i) 1524 for (i = 0; i < fdchangecnt; ++i)
901 { 1525 {
902 int fd = fdchanges [i]; 1526 int fd = fdchanges [i];
903 ANFD *anfd = anfds + fd; 1527 ANFD *anfd = anfds + fd;
904 ev_io *w; 1528 ev_io *w;
905 1529
906 unsigned char events = 0; 1530 unsigned char o_events = anfd->events;
1531 unsigned char o_reify = anfd->reify;
907 1532
908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1533 anfd->reify = 0;
909 events |= (unsigned char)w->events;
910 1534
911#if EV_SELECT_IS_WINSOCKET 1535 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
912 if (events)
913 { 1536 {
914 unsigned long arg; 1537 anfd->events = 0;
915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1538
916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1539 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1540 anfd->events |= (unsigned char)w->events;
1541
1542 if (o_events != anfd->events)
1543 o_reify = EV__IOFDSET; /* actually |= */
917 } 1544 }
918#endif
919 1545
920 { 1546 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); 1547 backend_modify (EV_A_ fd, o_events, anfd->events);
929 }
930 } 1548 }
931 1549
932 fdchangecnt = 0; 1550 fdchangecnt = 0;
933} 1551}
934 1552
… …
946 fdchanges [fdchangecnt - 1] = fd; 1564 fdchanges [fdchangecnt - 1] = fd;
947 } 1565 }
948} 1566}
949 1567
950/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1568/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
951inline_speed void 1569inline_speed void ecb_cold
952fd_kill (EV_P_ int fd) 1570fd_kill (EV_P_ int fd)
953{ 1571{
954 ev_io *w; 1572 ev_io *w;
955 1573
956 while ((w = (ev_io *)anfds [fd].head)) 1574 while ((w = (ev_io *)anfds [fd].head))
… …
958 ev_io_stop (EV_A_ w); 1576 ev_io_stop (EV_A_ w);
959 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1577 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
960 } 1578 }
961} 1579}
962 1580
963/* check whether the given fd is atcually valid, for error recovery */ 1581/* check whether the given fd is actually valid, for error recovery */
964inline_size int 1582inline_size int ecb_cold
965fd_valid (int fd) 1583fd_valid (int fd)
966{ 1584{
967#ifdef _WIN32 1585#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 1586 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 1587#else
970 return fcntl (fd, F_GETFD) != -1; 1588 return fcntl (fd, F_GETFD) != -1;
971#endif 1589#endif
972} 1590}
973 1591
974/* called on EBADF to verify fds */ 1592/* called on EBADF to verify fds */
975static void noinline 1593static void noinline ecb_cold
976fd_ebadf (EV_P) 1594fd_ebadf (EV_P)
977{ 1595{
978 int fd; 1596 int fd;
979 1597
980 for (fd = 0; fd < anfdmax; ++fd) 1598 for (fd = 0; fd < anfdmax; ++fd)
… …
982 if (!fd_valid (fd) && errno == EBADF) 1600 if (!fd_valid (fd) && errno == EBADF)
983 fd_kill (EV_A_ fd); 1601 fd_kill (EV_A_ fd);
984} 1602}
985 1603
986/* called on ENOMEM in select/poll to kill some fds and retry */ 1604/* called on ENOMEM in select/poll to kill some fds and retry */
987static void noinline 1605static void noinline ecb_cold
988fd_enomem (EV_P) 1606fd_enomem (EV_P)
989{ 1607{
990 int fd; 1608 int fd;
991 1609
992 for (fd = anfdmax; fd--; ) 1610 for (fd = anfdmax; fd--; )
… …
1010 anfds [fd].emask = 0; 1628 anfds [fd].emask = 0;
1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1629 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1012 } 1630 }
1013} 1631}
1014 1632
1633/* used to prepare libev internal fd's */
1634/* this is not fork-safe */
1635inline_speed void
1636fd_intern (int fd)
1637{
1638#ifdef _WIN32
1639 unsigned long arg = 1;
1640 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1641#else
1642 fcntl (fd, F_SETFD, FD_CLOEXEC);
1643 fcntl (fd, F_SETFL, O_NONBLOCK);
1644#endif
1645}
1646
1015/*****************************************************************************/ 1647/*****************************************************************************/
1016 1648
1017/* 1649/*
1018 * the heap functions want a real array index. array index 0 uis guaranteed to not 1650 * the heap functions want a real array index. array index 0 is guaranteed to not
1019 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1651 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1020 * the branching factor of the d-tree. 1652 * the branching factor of the d-tree.
1021 */ 1653 */
1022 1654
1023/* 1655/*
… …
1171 1803
1172static ANSIG signals [EV_NSIG - 1]; 1804static ANSIG signals [EV_NSIG - 1];
1173 1805
1174/*****************************************************************************/ 1806/*****************************************************************************/
1175 1807
1176/* used to prepare libev internal fd's */ 1808#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 1809
1190static void noinline 1810static void noinline ecb_cold
1191evpipe_init (EV_P) 1811evpipe_init (EV_P)
1192{ 1812{
1193 if (!ev_is_active (&pipe_w)) 1813 if (!ev_is_active (&pipe_w))
1194 { 1814 {
1195#if EV_USE_EVENTFD 1815# if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1816 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1197 if (evfd < 0 && errno == EINVAL) 1817 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0); 1818 evfd = eventfd (0, 0);
1199 1819
1200 if (evfd >= 0) 1820 if (evfd >= 0)
… …
1202 evpipe [0] = -1; 1822 evpipe [0] = -1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */ 1823 fd_intern (evfd); /* doing it twice doesn't hurt */
1204 ev_io_set (&pipe_w, evfd, EV_READ); 1824 ev_io_set (&pipe_w, evfd, EV_READ);
1205 } 1825 }
1206 else 1826 else
1207#endif 1827# endif
1208 { 1828 {
1209 while (pipe (evpipe)) 1829 while (pipe (evpipe))
1210 ev_syserr ("(libev) error creating signal/async pipe"); 1830 ev_syserr ("(libev) error creating signal/async pipe");
1211 1831
1212 fd_intern (evpipe [0]); 1832 fd_intern (evpipe [0]);
… …
1217 ev_io_start (EV_A_ &pipe_w); 1837 ev_io_start (EV_A_ &pipe_w);
1218 ev_unref (EV_A); /* watcher should not keep loop alive */ 1838 ev_unref (EV_A); /* watcher should not keep loop alive */
1219 } 1839 }
1220} 1840}
1221 1841
1222inline_size void 1842inline_speed void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1843evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{ 1844{
1225 if (!*flag) 1845 if (expect_true (*flag))
1846 return;
1847
1848 *flag = 1;
1849
1850 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1851
1852 pipe_write_skipped = 1;
1853
1854 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1855
1856 if (pipe_write_wanted)
1226 { 1857 {
1858 int old_errno;
1859
1860 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1861
1227 int old_errno = errno; /* save errno because write might clobber it */ 1862 old_errno = errno; /* save errno because write will clobber it */
1228
1229 *flag = 1;
1230 1863
1231#if EV_USE_EVENTFD 1864#if EV_USE_EVENTFD
1232 if (evfd >= 0) 1865 if (evfd >= 0)
1233 { 1866 {
1234 uint64_t counter = 1; 1867 uint64_t counter = 1;
1235 write (evfd, &counter, sizeof (uint64_t)); 1868 write (evfd, &counter, sizeof (uint64_t));
1236 } 1869 }
1237 else 1870 else
1238#endif 1871#endif
1872 {
1873 /* win32 people keep sending patches that change this write() to send() */
1874 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1875 /* so when you think this write should be a send instead, please find out */
1876 /* where your send() is from - it's definitely not the microsoft send, and */
1877 /* tell me. thank you. */
1878 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1879 /* check the ev documentation on how to use this flag */
1239 write (evpipe [1], &old_errno, 1); 1880 write (evpipe [1], &(evpipe [1]), 1);
1881 }
1240 1882
1241 errno = old_errno; 1883 errno = old_errno;
1242 } 1884 }
1243} 1885}
1244 1886
… …
1247static void 1889static void
1248pipecb (EV_P_ ev_io *iow, int revents) 1890pipecb (EV_P_ ev_io *iow, int revents)
1249{ 1891{
1250 int i; 1892 int i;
1251 1893
1894 if (revents & EV_READ)
1895 {
1252#if EV_USE_EVENTFD 1896#if EV_USE_EVENTFD
1253 if (evfd >= 0) 1897 if (evfd >= 0)
1254 { 1898 {
1255 uint64_t counter; 1899 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t)); 1900 read (evfd, &counter, sizeof (uint64_t));
1257 } 1901 }
1258 else 1902 else
1259#endif 1903#endif
1260 { 1904 {
1261 char dummy; 1905 char dummy;
1906 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1262 read (evpipe [0], &dummy, 1); 1907 read (evpipe [0], &dummy, 1);
1908 }
1263 } 1909 }
1264 1910
1911 pipe_write_skipped = 0;
1912
1913#if EV_SIGNAL_ENABLE
1265 if (sig_pending) 1914 if (sig_pending)
1266 { 1915 {
1267 sig_pending = 0; 1916 sig_pending = 0;
1268 1917
1269 for (i = EV_NSIG - 1; i--; ) 1918 for (i = EV_NSIG - 1; i--; )
1270 if (expect_false (signals [i].pending)) 1919 if (expect_false (signals [i].pending))
1271 ev_feed_signal_event (EV_A_ i + 1); 1920 ev_feed_signal_event (EV_A_ i + 1);
1272 } 1921 }
1922#endif
1273 1923
1274#if EV_ASYNC_ENABLE 1924#if EV_ASYNC_ENABLE
1275 if (async_pending) 1925 if (async_pending)
1276 { 1926 {
1277 async_pending = 0; 1927 async_pending = 0;
… …
1286#endif 1936#endif
1287} 1937}
1288 1938
1289/*****************************************************************************/ 1939/*****************************************************************************/
1290 1940
1941void
1942ev_feed_signal (int signum)
1943{
1944#if EV_MULTIPLICITY
1945 EV_P = signals [signum - 1].loop;
1946
1947 if (!EV_A)
1948 return;
1949#endif
1950
1951 if (!ev_active (&pipe_w))
1952 return;
1953
1954 signals [signum - 1].pending = 1;
1955 evpipe_write (EV_A_ &sig_pending);
1956}
1957
1291static void 1958static void
1292ev_sighandler (int signum) 1959ev_sighandler (int signum)
1293{ 1960{
1294#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop;
1296#endif
1297
1298#if _WIN32 1961#ifdef _WIN32
1299 signal (signum, ev_sighandler); 1962 signal (signum, ev_sighandler);
1300#endif 1963#endif
1301 1964
1302 signals [signum - 1].pending = 1; 1965 ev_feed_signal (signum);
1303 evpipe_write (EV_A_ &sig_pending);
1304} 1966}
1305 1967
1306void noinline 1968void noinline
1307ev_feed_signal_event (EV_P_ int signum) 1969ev_feed_signal_event (EV_P_ int signum)
1308{ 1970{
… …
1345 break; 2007 break;
1346 } 2008 }
1347} 2009}
1348#endif 2010#endif
1349 2011
2012#endif
2013
1350/*****************************************************************************/ 2014/*****************************************************************************/
1351 2015
2016#if EV_CHILD_ENABLE
1352static WL childs [EV_PID_HASHSIZE]; 2017static WL childs [EV_PID_HASHSIZE];
1353
1354#ifndef _WIN32
1355 2018
1356static ev_signal childev; 2019static ev_signal childev;
1357 2020
1358#ifndef WIFCONTINUED 2021#ifndef WIFCONTINUED
1359# define WIFCONTINUED(status) 0 2022# define WIFCONTINUED(status) 0
… …
1364child_reap (EV_P_ int chain, int pid, int status) 2027child_reap (EV_P_ int chain, int pid, int status)
1365{ 2028{
1366 ev_child *w; 2029 ev_child *w;
1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2030 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1368 2031
1369 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2032 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1370 { 2033 {
1371 if ((w->pid == pid || !w->pid) 2034 if ((w->pid == pid || !w->pid)
1372 && (!traced || (w->flags & 1))) 2035 && (!traced || (w->flags & 1)))
1373 { 2036 {
1374 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2037 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1399 /* make sure we are called again until all children have been reaped */ 2062 /* make sure we are called again until all children have been reaped */
1400 /* we need to do it this way so that the callback gets called before we continue */ 2063 /* we need to do it this way so that the callback gets called before we continue */
1401 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2064 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1402 2065
1403 child_reap (EV_A_ pid, pid, status); 2066 child_reap (EV_A_ pid, pid, status);
1404 if (EV_PID_HASHSIZE > 1) 2067 if ((EV_PID_HASHSIZE) > 1)
1405 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2068 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1406} 2069}
1407 2070
1408#endif 2071#endif
1409 2072
1410/*****************************************************************************/ 2073/*****************************************************************************/
1411 2074
2075#if EV_USE_IOCP
2076# include "ev_iocp.c"
2077#endif
1412#if EV_USE_PORT 2078#if EV_USE_PORT
1413# include "ev_port.c" 2079# include "ev_port.c"
1414#endif 2080#endif
1415#if EV_USE_KQUEUE 2081#if EV_USE_KQUEUE
1416# include "ev_kqueue.c" 2082# include "ev_kqueue.c"
… …
1423#endif 2089#endif
1424#if EV_USE_SELECT 2090#if EV_USE_SELECT
1425# include "ev_select.c" 2091# include "ev_select.c"
1426#endif 2092#endif
1427 2093
1428int 2094int ecb_cold
1429ev_version_major (void) 2095ev_version_major (void)
1430{ 2096{
1431 return EV_VERSION_MAJOR; 2097 return EV_VERSION_MAJOR;
1432} 2098}
1433 2099
1434int 2100int ecb_cold
1435ev_version_minor (void) 2101ev_version_minor (void)
1436{ 2102{
1437 return EV_VERSION_MINOR; 2103 return EV_VERSION_MINOR;
1438} 2104}
1439 2105
1440/* return true if we are running with elevated privileges and should ignore env variables */ 2106/* return true if we are running with elevated privileges and should ignore env variables */
1441int inline_size 2107int inline_size ecb_cold
1442enable_secure (void) 2108enable_secure (void)
1443{ 2109{
1444#ifdef _WIN32 2110#ifdef _WIN32
1445 return 0; 2111 return 0;
1446#else 2112#else
1447 return getuid () != geteuid () 2113 return getuid () != geteuid ()
1448 || getgid () != getegid (); 2114 || getgid () != getegid ();
1449#endif 2115#endif
1450} 2116}
1451 2117
1452unsigned int 2118unsigned int ecb_cold
1453ev_supported_backends (void) 2119ev_supported_backends (void)
1454{ 2120{
1455 unsigned int flags = 0; 2121 unsigned int flags = 0;
1456 2122
1457 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2123 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1461 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2127 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1462 2128
1463 return flags; 2129 return flags;
1464} 2130}
1465 2131
1466unsigned int 2132unsigned int ecb_cold
1467ev_recommended_backends (void) 2133ev_recommended_backends (void)
1468{ 2134{
1469 unsigned int flags = ev_supported_backends (); 2135 unsigned int flags = ev_supported_backends ();
1470 2136
1471#ifndef __NetBSD__ 2137#ifndef __NetBSD__
… …
1476#ifdef __APPLE__ 2142#ifdef __APPLE__
1477 /* only select works correctly on that "unix-certified" platform */ 2143 /* only select works correctly on that "unix-certified" platform */
1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2144 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2145 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1480#endif 2146#endif
2147#ifdef __FreeBSD__
2148 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2149#endif
1481 2150
1482 return flags; 2151 return flags;
1483} 2152}
1484 2153
1485unsigned int 2154unsigned int ecb_cold
1486ev_embeddable_backends (void) 2155ev_embeddable_backends (void)
1487{ 2156{
1488 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2157 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1489 2158
1490 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2159 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1491 /* please fix it and tell me how to detect the fix */ 2160 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1492 flags &= ~EVBACKEND_EPOLL; 2161 flags &= ~EVBACKEND_EPOLL;
1493 2162
1494 return flags; 2163 return flags;
1495} 2164}
1496 2165
1497unsigned int 2166unsigned int
1498ev_backend (EV_P) 2167ev_backend (EV_P)
1499{ 2168{
1500 return backend; 2169 return backend;
1501} 2170}
1502 2171
1503#if EV_MINIMAL < 2 2172#if EV_FEATURE_API
1504unsigned int 2173unsigned int
1505ev_loop_count (EV_P) 2174ev_iteration (EV_P)
1506{ 2175{
1507 return loop_count; 2176 return loop_count;
1508} 2177}
1509 2178
1510unsigned int 2179unsigned int
1511ev_loop_depth (EV_P) 2180ev_depth (EV_P)
1512{ 2181{
1513 return loop_depth; 2182 return loop_depth;
1514} 2183}
1515 2184
1516void 2185void
… …
1535ev_userdata (EV_P) 2204ev_userdata (EV_P)
1536{ 2205{
1537 return userdata; 2206 return userdata;
1538} 2207}
1539 2208
2209void
1540void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2210ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1541{ 2211{
1542 invoke_cb = invoke_pending_cb; 2212 invoke_cb = invoke_pending_cb;
1543} 2213}
1544 2214
2215void
1545void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2216ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1546{ 2217{
1547 release_cb = release; 2218 release_cb = release;
1548 acquire_cb = acquire; 2219 acquire_cb = acquire;
1549} 2220}
1550#endif 2221#endif
1551 2222
1552/* initialise a loop structure, must be zero-initialised */ 2223/* initialise a loop structure, must be zero-initialised */
1553static void noinline 2224static void noinline ecb_cold
1554loop_init (EV_P_ unsigned int flags) 2225loop_init (EV_P_ unsigned int flags)
1555{ 2226{
1556 if (!backend) 2227 if (!backend)
1557 { 2228 {
2229 origflags = flags;
2230
1558#if EV_USE_REALTIME 2231#if EV_USE_REALTIME
1559 if (!have_realtime) 2232 if (!have_realtime)
1560 { 2233 {
1561 struct timespec ts; 2234 struct timespec ts;
1562 2235
… …
1584 if (!(flags & EVFLAG_NOENV) 2257 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure () 2258 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS")) 2259 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS")); 2260 flags = atoi (getenv ("LIBEV_FLAGS"));
1588 2261
1589 ev_rt_now = ev_time (); 2262 ev_rt_now = ev_time ();
1590 mn_now = get_clock (); 2263 mn_now = get_clock ();
1591 now_floor = mn_now; 2264 now_floor = mn_now;
1592 rtmn_diff = ev_rt_now - mn_now; 2265 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2 2266#if EV_FEATURE_API
1594 invoke_cb = ev_invoke_pending; 2267 invoke_cb = ev_invoke_pending;
1595#endif 2268#endif
1596 2269
1597 io_blocktime = 0.; 2270 io_blocktime = 0.;
1598 timeout_blocktime = 0.; 2271 timeout_blocktime = 0.;
1599 backend = 0; 2272 backend = 0;
1600 backend_fd = -1; 2273 backend_fd = -1;
1601 sig_pending = 0; 2274 sig_pending = 0;
1602#if EV_ASYNC_ENABLE 2275#if EV_ASYNC_ENABLE
1603 async_pending = 0; 2276 async_pending = 0;
1604#endif 2277#endif
2278 pipe_write_skipped = 0;
2279 pipe_write_wanted = 0;
1605#if EV_USE_INOTIFY 2280#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2281 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 2282#endif
1608#if EV_USE_SIGNALFD 2283#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2284 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 2285#endif
1611 2286
1612 if (!(flags & 0x0000ffffU)) 2287 if (!(flags & EVBACKEND_MASK))
1613 flags |= ev_recommended_backends (); 2288 flags |= ev_recommended_backends ();
1614 2289
2290#if EV_USE_IOCP
2291 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2292#endif
1615#if EV_USE_PORT 2293#if EV_USE_PORT
1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2294 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1617#endif 2295#endif
1618#if EV_USE_KQUEUE 2296#if EV_USE_KQUEUE
1619 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2297 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2306 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1629#endif 2307#endif
1630 2308
1631 ev_prepare_init (&pending_w, pendingcb); 2309 ev_prepare_init (&pending_w, pendingcb);
1632 2310
2311#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1633 ev_init (&pipe_w, pipecb); 2312 ev_init (&pipe_w, pipecb);
1634 ev_set_priority (&pipe_w, EV_MAXPRI); 2313 ev_set_priority (&pipe_w, EV_MAXPRI);
2314#endif
1635 } 2315 }
1636} 2316}
1637 2317
1638/* free up a loop structure */ 2318/* free up a loop structure */
1639static void noinline 2319void ecb_cold
1640loop_destroy (EV_P) 2320ev_loop_destroy (EV_P)
1641{ 2321{
1642 int i; 2322 int i;
2323
2324#if EV_MULTIPLICITY
2325 /* mimic free (0) */
2326 if (!EV_A)
2327 return;
2328#endif
2329
2330#if EV_CLEANUP_ENABLE
2331 /* queue cleanup watchers (and execute them) */
2332 if (expect_false (cleanupcnt))
2333 {
2334 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2335 EV_INVOKE_PENDING;
2336 }
2337#endif
2338
2339#if EV_CHILD_ENABLE
2340 if (ev_is_active (&childev))
2341 {
2342 ev_ref (EV_A); /* child watcher */
2343 ev_signal_stop (EV_A_ &childev);
2344 }
2345#endif
1643 2346
1644 if (ev_is_active (&pipe_w)) 2347 if (ev_is_active (&pipe_w))
1645 { 2348 {
1646 /*ev_ref (EV_A);*/ 2349 /*ev_ref (EV_A);*/
1647 /*ev_io_stop (EV_A_ &pipe_w);*/ 2350 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1658 } 2361 }
1659 } 2362 }
1660 2363
1661#if EV_USE_SIGNALFD 2364#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w)) 2365 if (ev_is_active (&sigfd_w))
1663 {
1664 /*ev_ref (EV_A);*/
1665 /*ev_io_stop (EV_A_ &sigfd_w);*/
1666
1667 close (sigfd); 2366 close (sigfd);
1668 }
1669#endif 2367#endif
1670 2368
1671#if EV_USE_INOTIFY 2369#if EV_USE_INOTIFY
1672 if (fs_fd >= 0) 2370 if (fs_fd >= 0)
1673 close (fs_fd); 2371 close (fs_fd);
1674#endif 2372#endif
1675 2373
1676 if (backend_fd >= 0) 2374 if (backend_fd >= 0)
1677 close (backend_fd); 2375 close (backend_fd);
1678 2376
2377#if EV_USE_IOCP
2378 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2379#endif
1679#if EV_USE_PORT 2380#if EV_USE_PORT
1680 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2381 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1681#endif 2382#endif
1682#if EV_USE_KQUEUE 2383#if EV_USE_KQUEUE
1683 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2384 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1710 array_free (periodic, EMPTY); 2411 array_free (periodic, EMPTY);
1711#endif 2412#endif
1712#if EV_FORK_ENABLE 2413#if EV_FORK_ENABLE
1713 array_free (fork, EMPTY); 2414 array_free (fork, EMPTY);
1714#endif 2415#endif
2416#if EV_CLEANUP_ENABLE
2417 array_free (cleanup, EMPTY);
2418#endif
1715 array_free (prepare, EMPTY); 2419 array_free (prepare, EMPTY);
1716 array_free (check, EMPTY); 2420 array_free (check, EMPTY);
1717#if EV_ASYNC_ENABLE 2421#if EV_ASYNC_ENABLE
1718 array_free (async, EMPTY); 2422 array_free (async, EMPTY);
1719#endif 2423#endif
1720 2424
1721 backend = 0; 2425 backend = 0;
2426
2427#if EV_MULTIPLICITY
2428 if (ev_is_default_loop (EV_A))
2429#endif
2430 ev_default_loop_ptr = 0;
2431#if EV_MULTIPLICITY
2432 else
2433 ev_free (EV_A);
2434#endif
1722} 2435}
1723 2436
1724#if EV_USE_INOTIFY 2437#if EV_USE_INOTIFY
1725inline_size void infy_fork (EV_P); 2438inline_size void infy_fork (EV_P);
1726#endif 2439#endif
… …
1741 infy_fork (EV_A); 2454 infy_fork (EV_A);
1742#endif 2455#endif
1743 2456
1744 if (ev_is_active (&pipe_w)) 2457 if (ev_is_active (&pipe_w))
1745 { 2458 {
1746 /* this "locks" the handlers against writing to the pipe */ 2459 /* 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 2460
1753 ev_ref (EV_A); 2461 ev_ref (EV_A);
1754 ev_io_stop (EV_A_ &pipe_w); 2462 ev_io_stop (EV_A_ &pipe_w);
1755 2463
1756#if EV_USE_EVENTFD 2464#if EV_USE_EVENTFD
… …
1762 { 2470 {
1763 EV_WIN32_CLOSE_FD (evpipe [0]); 2471 EV_WIN32_CLOSE_FD (evpipe [0]);
1764 EV_WIN32_CLOSE_FD (evpipe [1]); 2472 EV_WIN32_CLOSE_FD (evpipe [1]);
1765 } 2473 }
1766 2474
2475#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1767 evpipe_init (EV_A); 2476 evpipe_init (EV_A);
1768 /* now iterate over everything, in case we missed something */ 2477 /* now iterate over everything, in case we missed something */
1769 pipecb (EV_A_ &pipe_w, EV_READ); 2478 pipecb (EV_A_ &pipe_w, EV_READ);
2479#endif
1770 } 2480 }
1771 2481
1772 postfork = 0; 2482 postfork = 0;
1773} 2483}
1774 2484
1775#if EV_MULTIPLICITY 2485#if EV_MULTIPLICITY
1776 2486
1777struct ev_loop * 2487struct ev_loop * ecb_cold
1778ev_loop_new (unsigned int flags) 2488ev_loop_new (unsigned int flags)
1779{ 2489{
1780 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2490 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1781 2491
1782 memset (EV_A, 0, sizeof (struct ev_loop)); 2492 memset (EV_A, 0, sizeof (struct ev_loop));
1783 loop_init (EV_A_ flags); 2493 loop_init (EV_A_ flags);
1784 2494
1785 if (ev_backend (EV_A)) 2495 if (ev_backend (EV_A))
1786 return EV_A; 2496 return EV_A;
1787 2497
2498 ev_free (EV_A);
1788 return 0; 2499 return 0;
1789} 2500}
1790 2501
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 */ 2502#endif /* multiplicity */
1804 2503
1805#if EV_VERIFY 2504#if EV_VERIFY
1806static void noinline 2505static void noinline ecb_cold
1807verify_watcher (EV_P_ W w) 2506verify_watcher (EV_P_ W w)
1808{ 2507{
1809 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2508 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1810 2509
1811 if (w->pending) 2510 if (w->pending)
1812 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2511 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1813} 2512}
1814 2513
1815static void noinline 2514static void noinline ecb_cold
1816verify_heap (EV_P_ ANHE *heap, int N) 2515verify_heap (EV_P_ ANHE *heap, int N)
1817{ 2516{
1818 int i; 2517 int i;
1819 2518
1820 for (i = HEAP0; i < N + HEAP0; ++i) 2519 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1825 2524
1826 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2525 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1827 } 2526 }
1828} 2527}
1829 2528
1830static void noinline 2529static void noinline ecb_cold
1831array_verify (EV_P_ W *ws, int cnt) 2530array_verify (EV_P_ W *ws, int cnt)
1832{ 2531{
1833 while (cnt--) 2532 while (cnt--)
1834 { 2533 {
1835 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2534 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1836 verify_watcher (EV_A_ ws [cnt]); 2535 verify_watcher (EV_A_ ws [cnt]);
1837 } 2536 }
1838} 2537}
1839#endif 2538#endif
1840 2539
1841#if EV_MINIMAL < 2 2540#if EV_FEATURE_API
1842void 2541void ecb_cold
1843ev_loop_verify (EV_P) 2542ev_verify (EV_P)
1844{ 2543{
1845#if EV_VERIFY 2544#if EV_VERIFY
1846 int i; 2545 int i;
1847 WL w; 2546 WL w;
1848 2547
… …
1882#if EV_FORK_ENABLE 2581#if EV_FORK_ENABLE
1883 assert (forkmax >= forkcnt); 2582 assert (forkmax >= forkcnt);
1884 array_verify (EV_A_ (W *)forks, forkcnt); 2583 array_verify (EV_A_ (W *)forks, forkcnt);
1885#endif 2584#endif
1886 2585
2586#if EV_CLEANUP_ENABLE
2587 assert (cleanupmax >= cleanupcnt);
2588 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2589#endif
2590
1887#if EV_ASYNC_ENABLE 2591#if EV_ASYNC_ENABLE
1888 assert (asyncmax >= asynccnt); 2592 assert (asyncmax >= asynccnt);
1889 array_verify (EV_A_ (W *)asyncs, asynccnt); 2593 array_verify (EV_A_ (W *)asyncs, asynccnt);
1890#endif 2594#endif
1891 2595
2596#if EV_PREPARE_ENABLE
1892 assert (preparemax >= preparecnt); 2597 assert (preparemax >= preparecnt);
1893 array_verify (EV_A_ (W *)prepares, preparecnt); 2598 array_verify (EV_A_ (W *)prepares, preparecnt);
2599#endif
1894 2600
2601#if EV_CHECK_ENABLE
1895 assert (checkmax >= checkcnt); 2602 assert (checkmax >= checkcnt);
1896 array_verify (EV_A_ (W *)checks, checkcnt); 2603 array_verify (EV_A_ (W *)checks, checkcnt);
2604#endif
1897 2605
1898# if 0 2606# if 0
2607#if EV_CHILD_ENABLE
1899 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2608 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1900 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2609 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2610#endif
1901# endif 2611# endif
1902#endif 2612#endif
1903} 2613}
1904#endif 2614#endif
1905 2615
1906#if EV_MULTIPLICITY 2616#if EV_MULTIPLICITY
1907struct ev_loop * 2617struct ev_loop * ecb_cold
1908ev_default_loop_init (unsigned int flags)
1909#else 2618#else
1910int 2619int
2620#endif
1911ev_default_loop (unsigned int flags) 2621ev_default_loop (unsigned int flags)
1912#endif
1913{ 2622{
1914 if (!ev_default_loop_ptr) 2623 if (!ev_default_loop_ptr)
1915 { 2624 {
1916#if EV_MULTIPLICITY 2625#if EV_MULTIPLICITY
1917 EV_P = ev_default_loop_ptr = &default_loop_struct; 2626 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1921 2630
1922 loop_init (EV_A_ flags); 2631 loop_init (EV_A_ flags);
1923 2632
1924 if (ev_backend (EV_A)) 2633 if (ev_backend (EV_A))
1925 { 2634 {
1926#ifndef _WIN32 2635#if EV_CHILD_ENABLE
1927 ev_signal_init (&childev, childcb, SIGCHLD); 2636 ev_signal_init (&childev, childcb, SIGCHLD);
1928 ev_set_priority (&childev, EV_MAXPRI); 2637 ev_set_priority (&childev, EV_MAXPRI);
1929 ev_signal_start (EV_A_ &childev); 2638 ev_signal_start (EV_A_ &childev);
1930 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2639 ev_unref (EV_A); /* child watcher should not keep loop alive */
1931#endif 2640#endif
… …
1936 2645
1937 return ev_default_loop_ptr; 2646 return ev_default_loop_ptr;
1938} 2647}
1939 2648
1940void 2649void
1941ev_default_destroy (void) 2650ev_loop_fork (EV_P)
1942{ 2651{
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 */ 2652 postfork = 1; /* must be in line with ev_default_fork */
1965} 2653}
1966 2654
1967/*****************************************************************************/ 2655/*****************************************************************************/
1968 2656
1969void 2657void
… …
1991 2679
1992 for (pri = NUMPRI; pri--; ) 2680 for (pri = NUMPRI; pri--; )
1993 while (pendingcnt [pri]) 2681 while (pendingcnt [pri])
1994 { 2682 {
1995 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2683 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 2684
2000 p->w->pending = 0; 2685 p->w->pending = 0;
2001 EV_CB_INVOKE (p->w, p->events); 2686 EV_CB_INVOKE (p->w, p->events);
2002 EV_FREQUENT_CHECK; 2687 EV_FREQUENT_CHECK;
2003 } 2688 }
… …
2060 EV_FREQUENT_CHECK; 2745 EV_FREQUENT_CHECK;
2061 feed_reverse (EV_A_ (W)w); 2746 feed_reverse (EV_A_ (W)w);
2062 } 2747 }
2063 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2748 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2064 2749
2065 feed_reverse_done (EV_A_ EV_TIMEOUT); 2750 feed_reverse_done (EV_A_ EV_TIMER);
2066 } 2751 }
2067} 2752}
2068 2753
2069#if EV_PERIODIC_ENABLE 2754#if EV_PERIODIC_ENABLE
2755
2756static void noinline
2757periodic_recalc (EV_P_ ev_periodic *w)
2758{
2759 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2760 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2761
2762 /* the above almost always errs on the low side */
2763 while (at <= ev_rt_now)
2764 {
2765 ev_tstamp nat = at + w->interval;
2766
2767 /* when resolution fails us, we use ev_rt_now */
2768 if (expect_false (nat == at))
2769 {
2770 at = ev_rt_now;
2771 break;
2772 }
2773
2774 at = nat;
2775 }
2776
2777 ev_at (w) = at;
2778}
2779
2070/* make periodics pending */ 2780/* make periodics pending */
2071inline_size void 2781inline_size void
2072periodics_reify (EV_P) 2782periodics_reify (EV_P)
2073{ 2783{
2074 EV_FREQUENT_CHECK; 2784 EV_FREQUENT_CHECK;
… …
2093 ANHE_at_cache (periodics [HEAP0]); 2803 ANHE_at_cache (periodics [HEAP0]);
2094 downheap (periodics, periodiccnt, HEAP0); 2804 downheap (periodics, periodiccnt, HEAP0);
2095 } 2805 }
2096 else if (w->interval) 2806 else if (w->interval)
2097 { 2807 {
2098 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2808 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]); 2809 ANHE_at_cache (periodics [HEAP0]);
2113 downheap (periodics, periodiccnt, HEAP0); 2810 downheap (periodics, periodiccnt, HEAP0);
2114 } 2811 }
2115 else 2812 else
2116 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2813 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2123 feed_reverse_done (EV_A_ EV_PERIODIC); 2820 feed_reverse_done (EV_A_ EV_PERIODIC);
2124 } 2821 }
2125} 2822}
2126 2823
2127/* simply recalculate all periodics */ 2824/* simply recalculate all periodics */
2128/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2825/* TODO: maybe ensure that at least one event happens when jumping forward? */
2129static void noinline 2826static void noinline ecb_cold
2130periodics_reschedule (EV_P) 2827periodics_reschedule (EV_P)
2131{ 2828{
2132 int i; 2829 int i;
2133 2830
2134 /* adjust periodics after time jump */ 2831 /* adjust periodics after time jump */
… …
2137 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2834 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2138 2835
2139 if (w->reschedule_cb) 2836 if (w->reschedule_cb)
2140 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2837 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2141 else if (w->interval) 2838 else if (w->interval)
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2839 periodic_recalc (EV_A_ w);
2143 2840
2144 ANHE_at_cache (periodics [i]); 2841 ANHE_at_cache (periodics [i]);
2145 } 2842 }
2146 2843
2147 reheap (periodics, periodiccnt); 2844 reheap (periodics, periodiccnt);
2148} 2845}
2149#endif 2846#endif
2150 2847
2151/* adjust all timers by a given offset */ 2848/* adjust all timers by a given offset */
2152static void noinline 2849static void noinline ecb_cold
2153timers_reschedule (EV_P_ ev_tstamp adjust) 2850timers_reschedule (EV_P_ ev_tstamp adjust)
2154{ 2851{
2155 int i; 2852 int i;
2156 2853
2157 for (i = 0; i < timercnt; ++i) 2854 for (i = 0; i < timercnt; ++i)
… …
2161 ANHE_at_cache (*he); 2858 ANHE_at_cache (*he);
2162 } 2859 }
2163} 2860}
2164 2861
2165/* fetch new monotonic and realtime times from the kernel */ 2862/* fetch new monotonic and realtime times from the kernel */
2166/* also detetc if there was a timejump, and act accordingly */ 2863/* also detect if there was a timejump, and act accordingly */
2167inline_speed void 2864inline_speed void
2168time_update (EV_P_ ev_tstamp max_block) 2865time_update (EV_P_ ev_tstamp max_block)
2169{ 2866{
2170#if EV_USE_MONOTONIC 2867#if EV_USE_MONOTONIC
2171 if (expect_true (have_monotonic)) 2868 if (expect_true (have_monotonic))
… …
2194 * doesn't hurt either as we only do this on time-jumps or 2891 * doesn't hurt either as we only do this on time-jumps or
2195 * in the unlikely event of having been preempted here. 2892 * in the unlikely event of having been preempted here.
2196 */ 2893 */
2197 for (i = 4; --i; ) 2894 for (i = 4; --i; )
2198 { 2895 {
2896 ev_tstamp diff;
2199 rtmn_diff = ev_rt_now - mn_now; 2897 rtmn_diff = ev_rt_now - mn_now;
2200 2898
2899 diff = odiff - rtmn_diff;
2900
2201 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2901 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2202 return; /* all is well */ 2902 return; /* all is well */
2203 2903
2204 ev_rt_now = ev_time (); 2904 ev_rt_now = ev_time ();
2205 mn_now = get_clock (); 2905 mn_now = get_clock ();
2206 now_floor = mn_now; 2906 now_floor = mn_now;
… …
2229 mn_now = ev_rt_now; 2929 mn_now = ev_rt_now;
2230 } 2930 }
2231} 2931}
2232 2932
2233void 2933void
2234ev_loop (EV_P_ int flags) 2934ev_run (EV_P_ int flags)
2235{ 2935{
2236#if EV_MINIMAL < 2 2936#if EV_FEATURE_API
2237 ++loop_depth; 2937 ++loop_depth;
2238#endif 2938#endif
2239 2939
2240 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2940 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2241 2941
2242 loop_done = EVUNLOOP_CANCEL; 2942 loop_done = EVBREAK_CANCEL;
2243 2943
2244 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2944 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2245 2945
2246 do 2946 do
2247 { 2947 {
2248#if EV_VERIFY >= 2 2948#if EV_VERIFY >= 2
2249 ev_loop_verify (EV_A); 2949 ev_verify (EV_A);
2250#endif 2950#endif
2251 2951
2252#ifndef _WIN32 2952#ifndef _WIN32
2253 if (expect_false (curpid)) /* penalise the forking check even more */ 2953 if (expect_false (curpid)) /* penalise the forking check even more */
2254 if (expect_false (getpid () != curpid)) 2954 if (expect_false (getpid () != curpid))
… …
2266 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2966 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2267 EV_INVOKE_PENDING; 2967 EV_INVOKE_PENDING;
2268 } 2968 }
2269#endif 2969#endif
2270 2970
2971#if EV_PREPARE_ENABLE
2271 /* queue prepare watchers (and execute them) */ 2972 /* queue prepare watchers (and execute them) */
2272 if (expect_false (preparecnt)) 2973 if (expect_false (preparecnt))
2273 { 2974 {
2274 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2975 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2275 EV_INVOKE_PENDING; 2976 EV_INVOKE_PENDING;
2276 } 2977 }
2978#endif
2277 2979
2278 if (expect_false (loop_done)) 2980 if (expect_false (loop_done))
2279 break; 2981 break;
2280 2982
2281 /* we might have forked, so reify kernel state if necessary */ 2983 /* we might have forked, so reify kernel state if necessary */
… …
2288 /* calculate blocking time */ 2990 /* calculate blocking time */
2289 { 2991 {
2290 ev_tstamp waittime = 0.; 2992 ev_tstamp waittime = 0.;
2291 ev_tstamp sleeptime = 0.; 2993 ev_tstamp sleeptime = 0.;
2292 2994
2995 /* remember old timestamp for io_blocktime calculation */
2996 ev_tstamp prev_mn_now = mn_now;
2997
2998 /* update time to cancel out callback processing overhead */
2999 time_update (EV_A_ 1e100);
3000
3001 /* from now on, we want a pipe-wake-up */
3002 pipe_write_wanted = 1;
3003
3004 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3005
2293 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3006 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2294 { 3007 {
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; 3008 waittime = MAX_BLOCKTIME;
2302 3009
2303 if (timercnt) 3010 if (timercnt)
2304 { 3011 {
2305 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3012 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2306 if (waittime > to) waittime = to; 3013 if (waittime > to) waittime = to;
2307 } 3014 }
2308 3015
2309#if EV_PERIODIC_ENABLE 3016#if EV_PERIODIC_ENABLE
2310 if (periodiccnt) 3017 if (periodiccnt)
2311 { 3018 {
2312 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3019 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2313 if (waittime > to) waittime = to; 3020 if (waittime > to) waittime = to;
2314 } 3021 }
2315#endif 3022#endif
2316 3023
2317 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3024 /* don't let timeouts decrease the waittime below timeout_blocktime */
2318 if (expect_false (waittime < timeout_blocktime)) 3025 if (expect_false (waittime < timeout_blocktime))
2319 waittime = timeout_blocktime; 3026 waittime = timeout_blocktime;
3027
3028 /* at this point, we NEED to wait, so we have to ensure */
3029 /* to pass a minimum nonzero value to the backend */
3030 if (expect_false (waittime < backend_mintime))
3031 waittime = backend_mintime;
2320 3032
2321 /* extra check because io_blocktime is commonly 0 */ 3033 /* extra check because io_blocktime is commonly 0 */
2322 if (expect_false (io_blocktime)) 3034 if (expect_false (io_blocktime))
2323 { 3035 {
2324 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3036 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2325 3037
2326 if (sleeptime > waittime - backend_fudge) 3038 if (sleeptime > waittime - backend_mintime)
2327 sleeptime = waittime - backend_fudge; 3039 sleeptime = waittime - backend_mintime;
2328 3040
2329 if (expect_true (sleeptime > 0.)) 3041 if (expect_true (sleeptime > 0.))
2330 { 3042 {
2331 ev_sleep (sleeptime); 3043 ev_sleep (sleeptime);
2332 waittime -= sleeptime; 3044 waittime -= sleeptime;
2333 } 3045 }
2334 } 3046 }
2335 } 3047 }
2336 3048
2337#if EV_MINIMAL < 2 3049#if EV_FEATURE_API
2338 ++loop_count; 3050 ++loop_count;
2339#endif 3051#endif
2340 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3052 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2341 backend_poll (EV_A_ waittime); 3053 backend_poll (EV_A_ waittime);
2342 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3054 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3055
3056 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3057
3058 if (pipe_write_skipped)
3059 {
3060 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3061 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3062 }
3063
2343 3064
2344 /* update ev_rt_now, do magic */ 3065 /* update ev_rt_now, do magic */
2345 time_update (EV_A_ waittime + sleeptime); 3066 time_update (EV_A_ waittime + sleeptime);
2346 } 3067 }
2347 3068
… …
2354#if EV_IDLE_ENABLE 3075#if EV_IDLE_ENABLE
2355 /* queue idle watchers unless other events are pending */ 3076 /* queue idle watchers unless other events are pending */
2356 idle_reify (EV_A); 3077 idle_reify (EV_A);
2357#endif 3078#endif
2358 3079
3080#if EV_CHECK_ENABLE
2359 /* queue check watchers, to be executed first */ 3081 /* queue check watchers, to be executed first */
2360 if (expect_false (checkcnt)) 3082 if (expect_false (checkcnt))
2361 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3083 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3084#endif
2362 3085
2363 EV_INVOKE_PENDING; 3086 EV_INVOKE_PENDING;
2364 } 3087 }
2365 while (expect_true ( 3088 while (expect_true (
2366 activecnt 3089 activecnt
2367 && !loop_done 3090 && !loop_done
2368 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3091 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2369 )); 3092 ));
2370 3093
2371 if (loop_done == EVUNLOOP_ONE) 3094 if (loop_done == EVBREAK_ONE)
2372 loop_done = EVUNLOOP_CANCEL; 3095 loop_done = EVBREAK_CANCEL;
2373 3096
2374#if EV_MINIMAL < 2 3097#if EV_FEATURE_API
2375 --loop_depth; 3098 --loop_depth;
2376#endif 3099#endif
2377} 3100}
2378 3101
2379void 3102void
2380ev_unloop (EV_P_ int how) 3103ev_break (EV_P_ int how)
2381{ 3104{
2382 loop_done = how; 3105 loop_done = how;
2383} 3106}
2384 3107
2385void 3108void
… …
2505 3228
2506 if (expect_false (ev_is_active (w))) 3229 if (expect_false (ev_is_active (w)))
2507 return; 3230 return;
2508 3231
2509 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3232 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)))); 3233 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2511 3234
2512 EV_FREQUENT_CHECK; 3235 EV_FREQUENT_CHECK;
2513 3236
2514 ev_start (EV_A_ (W)w, 1); 3237 ev_start (EV_A_ (W)w, 1);
2515 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3238 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2533 EV_FREQUENT_CHECK; 3256 EV_FREQUENT_CHECK;
2534 3257
2535 wlist_del (&anfds[w->fd].head, (WL)w); 3258 wlist_del (&anfds[w->fd].head, (WL)w);
2536 ev_stop (EV_A_ (W)w); 3259 ev_stop (EV_A_ (W)w);
2537 3260
2538 fd_change (EV_A_ w->fd, 1); 3261 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2539 3262
2540 EV_FREQUENT_CHECK; 3263 EV_FREQUENT_CHECK;
2541} 3264}
2542 3265
2543void noinline 3266void noinline
… …
2585 timers [active] = timers [timercnt + HEAP0]; 3308 timers [active] = timers [timercnt + HEAP0];
2586 adjustheap (timers, timercnt, active); 3309 adjustheap (timers, timercnt, active);
2587 } 3310 }
2588 } 3311 }
2589 3312
2590 EV_FREQUENT_CHECK;
2591
2592 ev_at (w) -= mn_now; 3313 ev_at (w) -= mn_now;
2593 3314
2594 ev_stop (EV_A_ (W)w); 3315 ev_stop (EV_A_ (W)w);
3316
3317 EV_FREQUENT_CHECK;
2595} 3318}
2596 3319
2597void noinline 3320void noinline
2598ev_timer_again (EV_P_ ev_timer *w) 3321ev_timer_again (EV_P_ ev_timer *w)
2599{ 3322{
2600 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
3324
3325 clear_pending (EV_A_ (W)w);
2601 3326
2602 if (ev_is_active (w)) 3327 if (ev_is_active (w))
2603 { 3328 {
2604 if (w->repeat) 3329 if (w->repeat)
2605 { 3330 {
… …
2635 if (w->reschedule_cb) 3360 if (w->reschedule_cb)
2636 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3361 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2637 else if (w->interval) 3362 else if (w->interval)
2638 { 3363 {
2639 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3364 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2640 /* this formula differs from the one in periodic_reify because we do not always round up */ 3365 periodic_recalc (EV_A_ w);
2641 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2642 } 3366 }
2643 else 3367 else
2644 ev_at (w) = w->offset; 3368 ev_at (w) = w->offset;
2645 3369
2646 EV_FREQUENT_CHECK; 3370 EV_FREQUENT_CHECK;
… …
2678 periodics [active] = periodics [periodiccnt + HEAP0]; 3402 periodics [active] = periodics [periodiccnt + HEAP0];
2679 adjustheap (periodics, periodiccnt, active); 3403 adjustheap (periodics, periodiccnt, active);
2680 } 3404 }
2681 } 3405 }
2682 3406
2683 EV_FREQUENT_CHECK;
2684
2685 ev_stop (EV_A_ (W)w); 3407 ev_stop (EV_A_ (W)w);
3408
3409 EV_FREQUENT_CHECK;
2686} 3410}
2687 3411
2688void noinline 3412void noinline
2689ev_periodic_again (EV_P_ ev_periodic *w) 3413ev_periodic_again (EV_P_ ev_periodic *w)
2690{ 3414{
… …
2695#endif 3419#endif
2696 3420
2697#ifndef SA_RESTART 3421#ifndef SA_RESTART
2698# define SA_RESTART 0 3422# define SA_RESTART 0
2699#endif 3423#endif
3424
3425#if EV_SIGNAL_ENABLE
2700 3426
2701void noinline 3427void noinline
2702ev_signal_start (EV_P_ ev_signal *w) 3428ev_signal_start (EV_P_ ev_signal *w)
2703{ 3429{
2704 if (expect_false (ev_is_active (w))) 3430 if (expect_false (ev_is_active (w)))
… …
2751 if (!((WL)w)->next) 3477 if (!((WL)w)->next)
2752# if EV_USE_SIGNALFD 3478# if EV_USE_SIGNALFD
2753 if (sigfd < 0) /*TODO*/ 3479 if (sigfd < 0) /*TODO*/
2754# endif 3480# endif
2755 { 3481 {
2756# if _WIN32 3482# ifdef _WIN32
3483 evpipe_init (EV_A);
3484
2757 signal (w->signum, ev_sighandler); 3485 signal (w->signum, ev_sighandler);
2758# else 3486# else
2759 struct sigaction sa; 3487 struct sigaction sa;
2760 3488
2761 evpipe_init (EV_A); 3489 evpipe_init (EV_A);
… …
2763 sa.sa_handler = ev_sighandler; 3491 sa.sa_handler = ev_sighandler;
2764 sigfillset (&sa.sa_mask); 3492 sigfillset (&sa.sa_mask);
2765 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3493 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2766 sigaction (w->signum, &sa, 0); 3494 sigaction (w->signum, &sa, 0);
2767 3495
3496 if (origflags & EVFLAG_NOSIGMASK)
3497 {
2768 sigemptyset (&sa.sa_mask); 3498 sigemptyset (&sa.sa_mask);
2769 sigaddset (&sa.sa_mask, w->signum); 3499 sigaddset (&sa.sa_mask, w->signum);
2770 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3500 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3501 }
2771#endif 3502#endif
2772 } 3503 }
2773 3504
2774 EV_FREQUENT_CHECK; 3505 EV_FREQUENT_CHECK;
2775} 3506}
… …
2792 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3523 signals [w->signum - 1].loop = 0; /* unattach from signal */
2793#endif 3524#endif
2794#if EV_USE_SIGNALFD 3525#if EV_USE_SIGNALFD
2795 if (sigfd >= 0) 3526 if (sigfd >= 0)
2796 { 3527 {
2797 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3528 sigset_t ss;
3529
3530 sigemptyset (&ss);
3531 sigaddset (&ss, w->signum);
2798 sigdelset (&sigfd_set, w->signum); 3532 sigdelset (&sigfd_set, w->signum);
3533
2799 signalfd (sigfd, &sigfd_set, 0); 3534 signalfd (sigfd, &sigfd_set, 0);
2800 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3535 sigprocmask (SIG_UNBLOCK, &ss, 0);
2801 /*TODO: maybe unblock signal? */
2802 } 3536 }
2803 else 3537 else
2804#endif 3538#endif
2805 signal (w->signum, SIG_DFL); 3539 signal (w->signum, SIG_DFL);
2806 } 3540 }
2807 3541
2808 EV_FREQUENT_CHECK; 3542 EV_FREQUENT_CHECK;
2809} 3543}
2810 3544
3545#endif
3546
3547#if EV_CHILD_ENABLE
3548
2811void 3549void
2812ev_child_start (EV_P_ ev_child *w) 3550ev_child_start (EV_P_ ev_child *w)
2813{ 3551{
2814#if EV_MULTIPLICITY 3552#if EV_MULTIPLICITY
2815 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3553 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
… …
2818 return; 3556 return;
2819 3557
2820 EV_FREQUENT_CHECK; 3558 EV_FREQUENT_CHECK;
2821 3559
2822 ev_start (EV_A_ (W)w, 1); 3560 ev_start (EV_A_ (W)w, 1);
2823 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3561 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2824 3562
2825 EV_FREQUENT_CHECK; 3563 EV_FREQUENT_CHECK;
2826} 3564}
2827 3565
2828void 3566void
… …
2832 if (expect_false (!ev_is_active (w))) 3570 if (expect_false (!ev_is_active (w)))
2833 return; 3571 return;
2834 3572
2835 EV_FREQUENT_CHECK; 3573 EV_FREQUENT_CHECK;
2836 3574
2837 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3575 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2838 ev_stop (EV_A_ (W)w); 3576 ev_stop (EV_A_ (W)w);
2839 3577
2840 EV_FREQUENT_CHECK; 3578 EV_FREQUENT_CHECK;
2841} 3579}
3580
3581#endif
2842 3582
2843#if EV_STAT_ENABLE 3583#if EV_STAT_ENABLE
2844 3584
2845# ifdef _WIN32 3585# ifdef _WIN32
2846# undef lstat 3586# undef lstat
… …
2852#define MIN_STAT_INTERVAL 0.1074891 3592#define MIN_STAT_INTERVAL 0.1074891
2853 3593
2854static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3594static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2855 3595
2856#if EV_USE_INOTIFY 3596#if EV_USE_INOTIFY
2857# define EV_INOTIFY_BUFSIZE 8192 3597
3598/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3599# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2858 3600
2859static void noinline 3601static void noinline
2860infy_add (EV_P_ ev_stat *w) 3602infy_add (EV_P_ ev_stat *w)
2861{ 3603{
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); 3604 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2863 3605
2864 if (w->wd < 0) 3606 if (w->wd >= 0)
3607 {
3608 struct statfs sfs;
3609
3610 /* now local changes will be tracked by inotify, but remote changes won't */
3611 /* unless the filesystem is known to be local, we therefore still poll */
3612 /* also do poll on <2.6.25, but with normal frequency */
3613
3614 if (!fs_2625)
3615 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3616 else if (!statfs (w->path, &sfs)
3617 && (sfs.f_type == 0x1373 /* devfs */
3618 || sfs.f_type == 0xEF53 /* ext2/3 */
3619 || sfs.f_type == 0x3153464a /* jfs */
3620 || sfs.f_type == 0x52654973 /* reiser3 */
3621 || sfs.f_type == 0x01021994 /* tempfs */
3622 || sfs.f_type == 0x58465342 /* xfs */))
3623 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3624 else
3625 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2865 { 3626 }
3627 else
3628 {
3629 /* can't use inotify, continue to stat */
2866 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3630 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 3631
2869 /* monitor some parent directory for speedup hints */ 3632 /* 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, */ 3633 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2871 /* but an efficiency issue only */ 3634 /* but an efficiency issue only */
2872 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3635 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2873 { 3636 {
2874 char path [4096]; 3637 char path [4096];
… …
2884 if (!pend || pend == path) 3647 if (!pend || pend == path)
2885 break; 3648 break;
2886 3649
2887 *pend = 0; 3650 *pend = 0;
2888 w->wd = inotify_add_watch (fs_fd, path, mask); 3651 w->wd = inotify_add_watch (fs_fd, path, mask);
2889 } 3652 }
2890 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3653 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2891 } 3654 }
2892 } 3655 }
2893 3656
2894 if (w->wd >= 0) 3657 if (w->wd >= 0)
2895 {
2896 struct statfs sfs;
2897
2898 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3658 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2899 3659
2900 /* now local changes will be tracked by inotify, but remote changes won't */ 3660 /* now re-arm timer, if required */
2901 /* unless the filesystem it known to be local, we therefore still poll */ 3661 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); 3662 ev_timer_again (EV_A_ &w->timer);
2915 } 3663 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2916} 3664}
2917 3665
2918static void noinline 3666static void noinline
2919infy_del (EV_P_ ev_stat *w) 3667infy_del (EV_P_ ev_stat *w)
2920{ 3668{
… …
2923 3671
2924 if (wd < 0) 3672 if (wd < 0)
2925 return; 3673 return;
2926 3674
2927 w->wd = -2; 3675 w->wd = -2;
2928 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3676 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2929 wlist_del (&fs_hash [slot].head, (WL)w); 3677 wlist_del (&fs_hash [slot].head, (WL)w);
2930 3678
2931 /* remove this watcher, if others are watching it, they will rearm */ 3679 /* remove this watcher, if others are watching it, they will rearm */
2932 inotify_rm_watch (fs_fd, wd); 3680 inotify_rm_watch (fs_fd, wd);
2933} 3681}
… …
2935static void noinline 3683static void noinline
2936infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3684infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2937{ 3685{
2938 if (slot < 0) 3686 if (slot < 0)
2939 /* overflow, need to check for all hash slots */ 3687 /* overflow, need to check for all hash slots */
2940 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3688 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2941 infy_wd (EV_A_ slot, wd, ev); 3689 infy_wd (EV_A_ slot, wd, ev);
2942 else 3690 else
2943 { 3691 {
2944 WL w_; 3692 WL w_;
2945 3693
2946 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3694 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2947 { 3695 {
2948 ev_stat *w = (ev_stat *)w_; 3696 ev_stat *w = (ev_stat *)w_;
2949 w_ = w_->next; /* lets us remove this watcher and all before it */ 3697 w_ = w_->next; /* lets us remove this watcher and all before it */
2950 3698
2951 if (w->wd == wd || wd == -1) 3699 if (w->wd == wd || wd == -1)
2952 { 3700 {
2953 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3701 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2954 { 3702 {
2955 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3703 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2956 w->wd = -1; 3704 w->wd = -1;
2957 infy_add (EV_A_ w); /* re-add, no matter what */ 3705 infy_add (EV_A_ w); /* re-add, no matter what */
2958 } 3706 }
2959 3707
2960 stat_timer_cb (EV_A_ &w->timer, 0); 3708 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2965 3713
2966static void 3714static void
2967infy_cb (EV_P_ ev_io *w, int revents) 3715infy_cb (EV_P_ ev_io *w, int revents)
2968{ 3716{
2969 char buf [EV_INOTIFY_BUFSIZE]; 3717 char buf [EV_INOTIFY_BUFSIZE];
2970 struct inotify_event *ev = (struct inotify_event *)buf;
2971 int ofs; 3718 int ofs;
2972 int len = read (fs_fd, buf, sizeof (buf)); 3719 int len = read (fs_fd, buf, sizeof (buf));
2973 3720
2974 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3721 for (ofs = 0; ofs < len; )
3722 {
3723 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2975 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3724 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3725 ofs += sizeof (struct inotify_event) + ev->len;
3726 }
2976} 3727}
2977 3728
2978inline_size void 3729inline_size void ecb_cold
2979check_2625 (EV_P) 3730ev_check_2625 (EV_P)
2980{ 3731{
2981 /* kernels < 2.6.25 are borked 3732 /* kernels < 2.6.25 are borked
2982 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3733 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2983 */ 3734 */
2984 struct utsname buf; 3735 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; 3736 return;
2997 3737
2998 fs_2625 = 1; 3738 fs_2625 = 1;
2999} 3739}
3000 3740
… …
3015 if (fs_fd != -2) 3755 if (fs_fd != -2)
3016 return; 3756 return;
3017 3757
3018 fs_fd = -1; 3758 fs_fd = -1;
3019 3759
3020 check_2625 (EV_A); 3760 ev_check_2625 (EV_A);
3021 3761
3022 fs_fd = infy_newfd (); 3762 fs_fd = infy_newfd ();
3023 3763
3024 if (fs_fd >= 0) 3764 if (fs_fd >= 0)
3025 { 3765 {
3026 fd_intern (fs_fd); 3766 fd_intern (fs_fd);
3027 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3767 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3028 ev_set_priority (&fs_w, EV_MAXPRI); 3768 ev_set_priority (&fs_w, EV_MAXPRI);
3029 ev_io_start (EV_A_ &fs_w); 3769 ev_io_start (EV_A_ &fs_w);
3770 ev_unref (EV_A);
3030 } 3771 }
3031} 3772}
3032 3773
3033inline_size void 3774inline_size void
3034infy_fork (EV_P) 3775infy_fork (EV_P)
… …
3036 int slot; 3777 int slot;
3037 3778
3038 if (fs_fd < 0) 3779 if (fs_fd < 0)
3039 return; 3780 return;
3040 3781
3782 ev_ref (EV_A);
3041 ev_io_stop (EV_A_ &fs_w); 3783 ev_io_stop (EV_A_ &fs_w);
3042 close (fs_fd); 3784 close (fs_fd);
3043 fs_fd = infy_newfd (); 3785 fs_fd = infy_newfd ();
3044 3786
3045 if (fs_fd >= 0) 3787 if (fs_fd >= 0)
3046 { 3788 {
3047 fd_intern (fs_fd); 3789 fd_intern (fs_fd);
3048 ev_io_set (&fs_w, fs_fd, EV_READ); 3790 ev_io_set (&fs_w, fs_fd, EV_READ);
3049 ev_io_start (EV_A_ &fs_w); 3791 ev_io_start (EV_A_ &fs_w);
3792 ev_unref (EV_A);
3050 } 3793 }
3051 3794
3052 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3795 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3053 { 3796 {
3054 WL w_ = fs_hash [slot].head; 3797 WL w_ = fs_hash [slot].head;
3055 fs_hash [slot].head = 0; 3798 fs_hash [slot].head = 0;
3056 3799
3057 while (w_) 3800 while (w_)
… …
3062 w->wd = -1; 3805 w->wd = -1;
3063 3806
3064 if (fs_fd >= 0) 3807 if (fs_fd >= 0)
3065 infy_add (EV_A_ w); /* re-add, no matter what */ 3808 infy_add (EV_A_ w); /* re-add, no matter what */
3066 else 3809 else
3810 {
3811 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3812 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3067 ev_timer_again (EV_A_ &w->timer); 3813 ev_timer_again (EV_A_ &w->timer);
3814 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3815 }
3068 } 3816 }
3069 } 3817 }
3070} 3818}
3071 3819
3072#endif 3820#endif
… …
3089static void noinline 3837static void noinline
3090stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3838stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3091{ 3839{
3092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3840 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3093 3841
3094 /* we copy this here each the time so that */ 3842 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); 3843 ev_stat_stat (EV_A_ w);
3098 3844
3099 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3845 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3100 if ( 3846 if (
3101 w->prev.st_dev != w->attr.st_dev 3847 prev.st_dev != w->attr.st_dev
3102 || w->prev.st_ino != w->attr.st_ino 3848 || prev.st_ino != w->attr.st_ino
3103 || w->prev.st_mode != w->attr.st_mode 3849 || prev.st_mode != w->attr.st_mode
3104 || w->prev.st_nlink != w->attr.st_nlink 3850 || prev.st_nlink != w->attr.st_nlink
3105 || w->prev.st_uid != w->attr.st_uid 3851 || prev.st_uid != w->attr.st_uid
3106 || w->prev.st_gid != w->attr.st_gid 3852 || prev.st_gid != w->attr.st_gid
3107 || w->prev.st_rdev != w->attr.st_rdev 3853 || prev.st_rdev != w->attr.st_rdev
3108 || w->prev.st_size != w->attr.st_size 3854 || prev.st_size != w->attr.st_size
3109 || w->prev.st_atime != w->attr.st_atime 3855 || prev.st_atime != w->attr.st_atime
3110 || w->prev.st_mtime != w->attr.st_mtime 3856 || prev.st_mtime != w->attr.st_mtime
3111 || w->prev.st_ctime != w->attr.st_ctime 3857 || prev.st_ctime != w->attr.st_ctime
3112 ) { 3858 ) {
3859 /* we only update w->prev on actual differences */
3860 /* in case we test more often than invoke the callback, */
3861 /* to ensure that prev is always different to attr */
3862 w->prev = prev;
3863
3113 #if EV_USE_INOTIFY 3864 #if EV_USE_INOTIFY
3114 if (fs_fd >= 0) 3865 if (fs_fd >= 0)
3115 { 3866 {
3116 infy_del (EV_A_ w); 3867 infy_del (EV_A_ w);
3117 infy_add (EV_A_ w); 3868 infy_add (EV_A_ w);
… …
3142 3893
3143 if (fs_fd >= 0) 3894 if (fs_fd >= 0)
3144 infy_add (EV_A_ w); 3895 infy_add (EV_A_ w);
3145 else 3896 else
3146#endif 3897#endif
3898 {
3147 ev_timer_again (EV_A_ &w->timer); 3899 ev_timer_again (EV_A_ &w->timer);
3900 ev_unref (EV_A);
3901 }
3148 3902
3149 ev_start (EV_A_ (W)w, 1); 3903 ev_start (EV_A_ (W)w, 1);
3150 3904
3151 EV_FREQUENT_CHECK; 3905 EV_FREQUENT_CHECK;
3152} 3906}
… …
3161 EV_FREQUENT_CHECK; 3915 EV_FREQUENT_CHECK;
3162 3916
3163#if EV_USE_INOTIFY 3917#if EV_USE_INOTIFY
3164 infy_del (EV_A_ w); 3918 infy_del (EV_A_ w);
3165#endif 3919#endif
3920
3921 if (ev_is_active (&w->timer))
3922 {
3923 ev_ref (EV_A);
3166 ev_timer_stop (EV_A_ &w->timer); 3924 ev_timer_stop (EV_A_ &w->timer);
3925 }
3167 3926
3168 ev_stop (EV_A_ (W)w); 3927 ev_stop (EV_A_ (W)w);
3169 3928
3170 EV_FREQUENT_CHECK; 3929 EV_FREQUENT_CHECK;
3171} 3930}
… …
3216 3975
3217 EV_FREQUENT_CHECK; 3976 EV_FREQUENT_CHECK;
3218} 3977}
3219#endif 3978#endif
3220 3979
3980#if EV_PREPARE_ENABLE
3221void 3981void
3222ev_prepare_start (EV_P_ ev_prepare *w) 3982ev_prepare_start (EV_P_ ev_prepare *w)
3223{ 3983{
3224 if (expect_false (ev_is_active (w))) 3984 if (expect_false (ev_is_active (w)))
3225 return; 3985 return;
… …
3251 4011
3252 ev_stop (EV_A_ (W)w); 4012 ev_stop (EV_A_ (W)w);
3253 4013
3254 EV_FREQUENT_CHECK; 4014 EV_FREQUENT_CHECK;
3255} 4015}
4016#endif
3256 4017
4018#if EV_CHECK_ENABLE
3257void 4019void
3258ev_check_start (EV_P_ ev_check *w) 4020ev_check_start (EV_P_ ev_check *w)
3259{ 4021{
3260 if (expect_false (ev_is_active (w))) 4022 if (expect_false (ev_is_active (w)))
3261 return; 4023 return;
… …
3287 4049
3288 ev_stop (EV_A_ (W)w); 4050 ev_stop (EV_A_ (W)w);
3289 4051
3290 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
3291} 4053}
4054#endif
3292 4055
3293#if EV_EMBED_ENABLE 4056#if EV_EMBED_ENABLE
3294void noinline 4057void noinline
3295ev_embed_sweep (EV_P_ ev_embed *w) 4058ev_embed_sweep (EV_P_ ev_embed *w)
3296{ 4059{
3297 ev_loop (w->other, EVLOOP_NONBLOCK); 4060 ev_run (w->other, EVRUN_NOWAIT);
3298} 4061}
3299 4062
3300static void 4063static void
3301embed_io_cb (EV_P_ ev_io *io, int revents) 4064embed_io_cb (EV_P_ ev_io *io, int revents)
3302{ 4065{
3303 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4066 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3304 4067
3305 if (ev_cb (w)) 4068 if (ev_cb (w))
3306 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4069 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3307 else 4070 else
3308 ev_loop (w->other, EVLOOP_NONBLOCK); 4071 ev_run (w->other, EVRUN_NOWAIT);
3309} 4072}
3310 4073
3311static void 4074static void
3312embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4075embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3313{ 4076{
… …
3317 EV_P = w->other; 4080 EV_P = w->other;
3318 4081
3319 while (fdchangecnt) 4082 while (fdchangecnt)
3320 { 4083 {
3321 fd_reify (EV_A); 4084 fd_reify (EV_A);
3322 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4085 ev_run (EV_A_ EVRUN_NOWAIT);
3323 } 4086 }
3324 } 4087 }
3325} 4088}
3326 4089
3327static void 4090static void
… …
3333 4096
3334 { 4097 {
3335 EV_P = w->other; 4098 EV_P = w->other;
3336 4099
3337 ev_loop_fork (EV_A); 4100 ev_loop_fork (EV_A);
3338 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4101 ev_run (EV_A_ EVRUN_NOWAIT);
3339 } 4102 }
3340 4103
3341 ev_embed_start (EV_A_ w); 4104 ev_embed_start (EV_A_ w);
3342} 4105}
3343 4106
… …
3391 4154
3392 ev_io_stop (EV_A_ &w->io); 4155 ev_io_stop (EV_A_ &w->io);
3393 ev_prepare_stop (EV_A_ &w->prepare); 4156 ev_prepare_stop (EV_A_ &w->prepare);
3394 ev_fork_stop (EV_A_ &w->fork); 4157 ev_fork_stop (EV_A_ &w->fork);
3395 4158
4159 ev_stop (EV_A_ (W)w);
4160
3396 EV_FREQUENT_CHECK; 4161 EV_FREQUENT_CHECK;
3397} 4162}
3398#endif 4163#endif
3399 4164
3400#if EV_FORK_ENABLE 4165#if EV_FORK_ENABLE
… …
3433 4198
3434 EV_FREQUENT_CHECK; 4199 EV_FREQUENT_CHECK;
3435} 4200}
3436#endif 4201#endif
3437 4202
4203#if EV_CLEANUP_ENABLE
4204void
4205ev_cleanup_start (EV_P_ ev_cleanup *w)
4206{
4207 if (expect_false (ev_is_active (w)))
4208 return;
4209
4210 EV_FREQUENT_CHECK;
4211
4212 ev_start (EV_A_ (W)w, ++cleanupcnt);
4213 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4214 cleanups [cleanupcnt - 1] = w;
4215
4216 /* cleanup watchers should never keep a refcount on the loop */
4217 ev_unref (EV_A);
4218 EV_FREQUENT_CHECK;
4219}
4220
4221void
4222ev_cleanup_stop (EV_P_ ev_cleanup *w)
4223{
4224 clear_pending (EV_A_ (W)w);
4225 if (expect_false (!ev_is_active (w)))
4226 return;
4227
4228 EV_FREQUENT_CHECK;
4229 ev_ref (EV_A);
4230
4231 {
4232 int active = ev_active (w);
4233
4234 cleanups [active - 1] = cleanups [--cleanupcnt];
4235 ev_active (cleanups [active - 1]) = active;
4236 }
4237
4238 ev_stop (EV_A_ (W)w);
4239
4240 EV_FREQUENT_CHECK;
4241}
4242#endif
4243
3438#if EV_ASYNC_ENABLE 4244#if EV_ASYNC_ENABLE
3439void 4245void
3440ev_async_start (EV_P_ ev_async *w) 4246ev_async_start (EV_P_ ev_async *w)
3441{ 4247{
3442 if (expect_false (ev_is_active (w))) 4248 if (expect_false (ev_is_active (w)))
3443 return; 4249 return;
4250
4251 w->sent = 0;
3444 4252
3445 evpipe_init (EV_A); 4253 evpipe_init (EV_A);
3446 4254
3447 EV_FREQUENT_CHECK; 4255 EV_FREQUENT_CHECK;
3448 4256
… …
3526{ 4334{
3527 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4335 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3528 4336
3529 if (expect_false (!once)) 4337 if (expect_false (!once))
3530 { 4338 {
3531 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4339 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3532 return; 4340 return;
3533 } 4341 }
3534 4342
3535 once->cb = cb; 4343 once->cb = cb;
3536 once->arg = arg; 4344 once->arg = arg;
… …
3551} 4359}
3552 4360
3553/*****************************************************************************/ 4361/*****************************************************************************/
3554 4362
3555#if EV_WALK_ENABLE 4363#if EV_WALK_ENABLE
3556void 4364void ecb_cold
3557ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4365ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3558{ 4366{
3559 int i, j; 4367 int i, j;
3560 ev_watcher_list *wl, *wn; 4368 ev_watcher_list *wl, *wn;
3561 4369
… …
3605 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4413 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3606#endif 4414#endif
3607 4415
3608#if EV_IDLE_ENABLE 4416#if EV_IDLE_ENABLE
3609 if (types & EV_IDLE) 4417 if (types & EV_IDLE)
3610 for (j = NUMPRI; i--; ) 4418 for (j = NUMPRI; j--; )
3611 for (i = idlecnt [j]; i--; ) 4419 for (i = idlecnt [j]; i--; )
3612 cb (EV_A_ EV_IDLE, idles [j][i]); 4420 cb (EV_A_ EV_IDLE, idles [j][i]);
3613#endif 4421#endif
3614 4422
3615#if EV_FORK_ENABLE 4423#if EV_FORK_ENABLE
… …
3623 if (types & EV_ASYNC) 4431 if (types & EV_ASYNC)
3624 for (i = asynccnt; i--; ) 4432 for (i = asynccnt; i--; )
3625 cb (EV_A_ EV_ASYNC, asyncs [i]); 4433 cb (EV_A_ EV_ASYNC, asyncs [i]);
3626#endif 4434#endif
3627 4435
4436#if EV_PREPARE_ENABLE
3628 if (types & EV_PREPARE) 4437 if (types & EV_PREPARE)
3629 for (i = preparecnt; i--; ) 4438 for (i = preparecnt; i--; )
3630#if EV_EMBED_ENABLE 4439# if EV_EMBED_ENABLE
3631 if (ev_cb (prepares [i]) != embed_prepare_cb) 4440 if (ev_cb (prepares [i]) != embed_prepare_cb)
3632#endif 4441# endif
3633 cb (EV_A_ EV_PREPARE, prepares [i]); 4442 cb (EV_A_ EV_PREPARE, prepares [i]);
4443#endif
3634 4444
4445#if EV_CHECK_ENABLE
3635 if (types & EV_CHECK) 4446 if (types & EV_CHECK)
3636 for (i = checkcnt; i--; ) 4447 for (i = checkcnt; i--; )
3637 cb (EV_A_ EV_CHECK, checks [i]); 4448 cb (EV_A_ EV_CHECK, checks [i]);
4449#endif
3638 4450
4451#if EV_SIGNAL_ENABLE
3639 if (types & EV_SIGNAL) 4452 if (types & EV_SIGNAL)
3640 for (i = 0; i < EV_NSIG - 1; ++i) 4453 for (i = 0; i < EV_NSIG - 1; ++i)
3641 for (wl = signals [i].head; wl; ) 4454 for (wl = signals [i].head; wl; )
3642 { 4455 {
3643 wn = wl->next; 4456 wn = wl->next;
3644 cb (EV_A_ EV_SIGNAL, wl); 4457 cb (EV_A_ EV_SIGNAL, wl);
3645 wl = wn; 4458 wl = wn;
3646 } 4459 }
4460#endif
3647 4461
4462#if EV_CHILD_ENABLE
3648 if (types & EV_CHILD) 4463 if (types & EV_CHILD)
3649 for (i = EV_PID_HASHSIZE; i--; ) 4464 for (i = (EV_PID_HASHSIZE); i--; )
3650 for (wl = childs [i]; wl; ) 4465 for (wl = childs [i]; wl; )
3651 { 4466 {
3652 wn = wl->next; 4467 wn = wl->next;
3653 cb (EV_A_ EV_CHILD, wl); 4468 cb (EV_A_ EV_CHILD, wl);
3654 wl = wn; 4469 wl = wn;
3655 } 4470 }
4471#endif
3656/* EV_STAT 0x00001000 /* stat data changed */ 4472/* EV_STAT 0x00001000 /* stat data changed */
3657/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4473/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3658} 4474}
3659#endif 4475#endif
3660 4476
3661#if EV_MULTIPLICITY 4477#if EV_MULTIPLICITY
3662 #include "ev_wrap.h" 4478 #include "ev_wrap.h"
3663#endif 4479#endif
3664 4480
3665#ifdef __cplusplus
3666}
3667#endif
3668

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines