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Comparing libev/ev.c (file contents):
Revision 1.307 by root, Sun Jul 19 07:20:41 2009 UTC vs.
Revision 1.420 by root, Wed Apr 18 05:44:42 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
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
193/* use what's provided */ 225/* use what's provided */
194#elif defined (NSIG) 226#elif defined NSIG
195# define EV_NSIG (NSIG) 227# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 228#elif defined _NSIG
197# define EV_NSIG (_NSIG) 229# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 230#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 231# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 232#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 233# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 234#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 235# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 236#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 237# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 238#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 239# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 240#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 242#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 244#else
213# error "unable to find value for NSIG, please report" 245# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */ 246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
215# define EV_NSIG 65 248# define EV_NSIG 65
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
216#endif 253#endif
217 254
218#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 258# else
222# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
223# endif 260# endif
224#endif 261#endif
225 262
226#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 266# else
230# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
231# endif 268# endif
232#endif 269#endif
233 270
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 273#endif
237 274
238#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 278# else
242# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
243# endif 280# endif
244#endif 281#endif
245 282
246#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 285#endif
249 286
250#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
251# ifdef _WIN32 288# ifdef _WIN32
252# define EV_USE_POLL 0 289# define EV_USE_POLL 0
253# else 290# else
254# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 292# endif
256#endif 293#endif
257 294
258#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 298# else
262# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
263# endif 300# endif
264#endif 301#endif
265 302
… …
271# define EV_USE_PORT 0 308# define EV_USE_PORT 0
272#endif 309#endif
273 310
274#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 314# else
278# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
279# endif 316# endif
280#endif 317#endif
281 318
282#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 321#endif
289 322
290#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 325#endif
297 326
298#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 330# else
302# define EV_USE_EVENTFD 0 331# define EV_USE_EVENTFD 0
303# endif 332# endif
304#endif 333#endif
305 334
306#ifndef EV_USE_SIGNALFD 335#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 337# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 338# else
310# define EV_USE_SIGNALFD 0 339# define EV_USE_SIGNALFD 0
311# endif 340# endif
312#endif 341#endif
313 342
… …
316# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
318#endif 347#endif
319 348
320#ifndef EV_VERIFY 349#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 351#endif
323 352
324#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 355#endif
327 356
328#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
330#endif 359#endif
331 360
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */ 362/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 363#if EV_USE_CLOCK_SYSCALL
… …
343# endif 372# endif
344#endif 373#endif
345 374
346/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 375/* this block fixes any misconfiguration where we know we run into trouble otherwise */
347 376
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
348#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
349# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
351#endif 386#endif
352 387
… …
359# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
361#endif 396#endif
362 397
363#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 401# include <sys/select.h>
366# endif 402# endif
367#endif 403#endif
368 404
369#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 406# include <sys/statfs.h>
372# include <sys/inotify.h> 407# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
386# include <stdint.h> 421# include <stdint.h>
387# ifndef EFD_NONBLOCK 422# ifndef EFD_NONBLOCK
388# define EFD_NONBLOCK O_NONBLOCK 423# define EFD_NONBLOCK O_NONBLOCK
389# endif 424# endif
390# ifndef EFD_CLOEXEC 425# ifndef EFD_CLOEXEC
426# ifdef O_CLOEXEC
391# define EFD_CLOEXEC O_CLOEXEC 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
392# endif 431# endif
393# ifdef __cplusplus 432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
394extern "C" { 433#endif
434
435#if EV_USE_SIGNALFD
436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
437# include <stdint.h>
438# ifndef SFD_NONBLOCK
439# define SFD_NONBLOCK O_NONBLOCK
395# endif 440# endif
396int eventfd (unsigned int initval, int flags); 441# ifndef SFD_CLOEXEC
397# ifdef __cplusplus 442# ifdef O_CLOEXEC
398} 443# define SFD_CLOEXEC O_CLOEXEC
444# else
445# define SFD_CLOEXEC 02000000
446# endif
399# endif 447# endif
400#endif 448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
401 449
402#if EV_USE_SIGNALFD 450struct signalfd_siginfo
403# include <sys/signalfd.h> 451{
452 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)];
454};
404#endif 455#endif
405 456
406/**/ 457/**/
407 458
408#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
409# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
410#else 461#else
411# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
412#endif 463#endif
413 464
414/* 465/*
415 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
416 * It is added to ev_rt_now when scheduling periodics
417 * to ensure progress, time-wise, even when rounding
418 * errors are against us.
419 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
420 * Better solutions welcome.
421 */ 468 */
422#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
423 471
424#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
425#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
426/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
427 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
428#if __GNUC__ >= 4 519 #if __GNUC__
429# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
430# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
431#else 526#else
432# define expect(expr,value) (expr) 527 #include <inttypes.h>
433# define noinline
434# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
435# define inline
436# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
437#endif 542 #endif
543#endif
438 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
586 #endif
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
600 #elif defined _WIN32
601 #include <WinNT.h>
602 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
603 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
604 #include <mbarrier.h>
605 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
606 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
607 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
608 #elif __xlC__
609 #define ECB_MEMORY_FENCE __sync ()
610 #endif
611#endif
612
613#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS
615 /*
616 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler
619 * OR provide pthread.h and link against the posix thread library
620 * of your system.
621 */
622 #include <pthread.h>
623 #define ECB_NEEDS_PTHREADS 1
624 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
625
626 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
627 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
628 #endif
629#endif
630
631#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
633#endif
634
635#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif
638
639/*****************************************************************************/
640
641#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643#if __cplusplus
644 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__
647#elif ECB_C99
648 #define ecb_inline static inline
649#else
650 #define ecb_inline static
651#endif
652
653#if ECB_GCC_VERSION(3,3)
654 #define ecb_restrict __restrict__
655#elif ECB_C99
656 #define ecb_restrict restrict
657#else
658 #define ecb_restrict
659#endif
660
661typedef int ecb_bool;
662
663#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
667
668#define ecb_function_ ecb_inline
669
670#if ECB_GCC_VERSION(3,1)
671 #define ecb_attribute(attrlist) __attribute__(attrlist)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality)
680#endif
681
682/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5)
684 #define ecb_decltype(x) __decltype(x)
685#elif ECB_GCC_VERSION(3,0)
686 #define ecb_decltype(x) __typeof(x)
687#endif
688
689#define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__))
691#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__))
694
695#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__))
699#else
700 #define ecb_artificial
701 #define ecb_hot
702 #define ecb_cold
703#endif
704
705/* put around conditional expressions if you are very sure that the */
706/* expression is mostly true or mostly false. note that these return */
707/* booleans, not the expression. */
439#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
440#define expect_true(expr) expect ((expr) != 0, 1) 709#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
710/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr)
713
714/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4)
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */
723#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
725 ecb_function_ int
726 ecb_ctz32 (uint32_t x)
727 {
728 int r = 0;
729
730 x &= ~x + 1; /* this isolates the lowest bit */
731
732#if ECB_branchless_on_i386
733 r += !!(x & 0xaaaaaaaa) << 0;
734 r += !!(x & 0xcccccccc) << 1;
735 r += !!(x & 0xf0f0f0f0) << 2;
736 r += !!(x & 0xff00ff00) << 3;
737 r += !!(x & 0xffff0000) << 4;
738#else
739 if (x & 0xaaaaaaaa) r += 1;
740 if (x & 0xcccccccc) r += 2;
741 if (x & 0xf0f0f0f0) r += 4;
742 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16;
744#endif
745
746 return r;
747 }
748
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
750 ecb_function_ int
751 ecb_ctz64 (uint64_t x)
752 {
753 int shift = x & 0xffffffffU ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift;
755 }
756
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
758 ecb_function_ int
759 ecb_popcount32 (uint32_t x)
760 {
761 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101;
765
766 return x >> 24;
767 }
768
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
770 ecb_function_ int ecb_ld32 (uint32_t x)
771 {
772 int r = 0;
773
774 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; }
779
780 return r;
781 }
782
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
784 ecb_function_ int ecb_ld64 (uint64_t x)
785 {
786 int r = 0;
787
788 if (x >> 32) { x >>= 32; r += 32; }
789
790 return r + ecb_ld32 (x);
791 }
792#endif
793
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796{
797 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799}
800
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
803{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8);
808
809 return x;
810}
811
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
814{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
819 x = ( x >> 16 ) | ( x << 16);
820
821 return x;
822}
823
824/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
827ecb_function_ int
828ecb_popcount64 (uint64_t x)
829{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831}
832
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
841
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850
851#if ECB_GCC_VERSION(4,3)
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
853 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x)
855#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
857 ecb_function_ uint16_t
858 ecb_bswap16 (uint16_t x)
859 {
860 return ecb_rotl16 (x, 8);
861 }
862
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
864 ecb_function_ uint32_t
865 ecb_bswap32 (uint32_t x)
866 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 }
869
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
871 ecb_function_ uint64_t
872 ecb_bswap64 (uint64_t x)
873 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 }
876#endif
877
878#if ECB_GCC_VERSION(4,5)
879 #define ecb_unreachable() __builtin_unreachable ()
880#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn;
883 ecb_inline void ecb_unreachable (void) { }
884#endif
885
886/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
888
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890ecb_inline unsigned char
891ecb_byteorder_helper (void)
892{
893 const uint32_t u = 0x11223344;
894 return *(unsigned char *)&u;
895}
896
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
901
902#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif
907
908#if __cplusplus
909 template<typename T>
910 static inline T ecb_div_rd (T val, T div)
911 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 }
914 template<typename T>
915 static inline T ecb_div_ru (T val, T div)
916 {
917 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
918 }
919#else
920 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
921 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
922#endif
923
924#if ecb_cplusplus_does_not_suck
925 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
926 template<typename T, int N>
927 static inline int ecb_array_length (const T (&arr)[N])
928 {
929 return N;
930 }
931#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif
934
935#endif
936
937/* ECB.H END */
938
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
940/* if your architecture doesn't need memory fences, e.g. because it is
941 * single-cpu/core, or if you use libev in a project that doesn't use libev
942 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
943 * libev, in which cases the memory fences become nops.
944 * alternatively, you can remove this #error and link against libpthread,
945 * which will then provide the memory fences.
946 */
947# error "memory fences not defined for your architecture, please report"
948#endif
949
950#ifndef ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE do { } while (0)
952# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
953# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
954#endif
955
956#define expect_false(cond) ecb_expect_false (cond)
957#define expect_true(cond) ecb_expect_true (cond)
958#define noinline ecb_noinline
959
441#define inline_size static inline 960#define inline_size ecb_inline
442 961
443#if EV_MINIMAL 962#if EV_FEATURE_CODE
963# define inline_speed ecb_inline
964#else
444# define inline_speed static noinline 965# define inline_speed static noinline
445#else
446# define inline_speed static inline
447#endif 966#endif
448 967
449#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
450 969
451#if EV_MINPRI == EV_MAXPRI 970#if EV_MINPRI == EV_MAXPRI
… …
464#define ev_active(w) ((W)(w))->active 983#define ev_active(w) ((W)(w))->active
465#define ev_at(w) ((WT)(w))->at 984#define ev_at(w) ((WT)(w))->at
466 985
467#if EV_USE_REALTIME 986#if EV_USE_REALTIME
468/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 987/* sig_atomic_t is used to avoid per-thread variables or locking but still */
469/* giving it a reasonably high chance of working on typical architetcures */ 988/* giving it a reasonably high chance of working on typical architectures */
470static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 989static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
471#endif 990#endif
472 991
473#if EV_USE_MONOTONIC 992#if EV_USE_MONOTONIC
474static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 993static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
475#endif 994#endif
476 995
996#ifndef EV_FD_TO_WIN32_HANDLE
997# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
998#endif
999#ifndef EV_WIN32_HANDLE_TO_FD
1000# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1001#endif
1002#ifndef EV_WIN32_CLOSE_FD
1003# define EV_WIN32_CLOSE_FD(fd) close (fd)
1004#endif
1005
477#ifdef _WIN32 1006#ifdef _WIN32
478# include "ev_win32.c" 1007# include "ev_win32.c"
479#endif 1008#endif
480 1009
481/*****************************************************************************/ 1010/*****************************************************************************/
482 1011
1012/* define a suitable floor function (only used by periodics atm) */
1013
1014#if EV_USE_FLOOR
1015# include <math.h>
1016# define ev_floor(v) floor (v)
1017#else
1018
1019#include <float.h>
1020
1021/* a floor() replacement function, should be independent of ev_tstamp type */
1022static ev_tstamp noinline
1023ev_floor (ev_tstamp v)
1024{
1025 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1028#else
1029 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1030#endif
1031
1032 /* argument too large for an unsigned long? */
1033 if (expect_false (v >= shift))
1034 {
1035 ev_tstamp f;
1036
1037 if (v == v - 1.)
1038 return v; /* very large number */
1039
1040 f = shift * ev_floor (v * (1. / shift));
1041 return f + ev_floor (v - f);
1042 }
1043
1044 /* special treatment for negative args? */
1045 if (expect_false (v < 0.))
1046 {
1047 ev_tstamp f = -ev_floor (-v);
1048
1049 return f - (f == v ? 0 : 1);
1050 }
1051
1052 /* fits into an unsigned long */
1053 return (unsigned long)v;
1054}
1055
1056#endif
1057
1058/*****************************************************************************/
1059
1060#ifdef __linux
1061# include <sys/utsname.h>
1062#endif
1063
1064static unsigned int noinline ecb_cold
1065ev_linux_version (void)
1066{
1067#ifdef __linux
1068 unsigned int v = 0;
1069 struct utsname buf;
1070 int i;
1071 char *p = buf.release;
1072
1073 if (uname (&buf))
1074 return 0;
1075
1076 for (i = 3+1; --i; )
1077 {
1078 unsigned int c = 0;
1079
1080 for (;;)
1081 {
1082 if (*p >= '0' && *p <= '9')
1083 c = c * 10 + *p++ - '0';
1084 else
1085 {
1086 p += *p == '.';
1087 break;
1088 }
1089 }
1090
1091 v = (v << 8) | c;
1092 }
1093
1094 return v;
1095#else
1096 return 0;
1097#endif
1098}
1099
1100/*****************************************************************************/
1101
1102#if EV_AVOID_STDIO
1103static void noinline ecb_cold
1104ev_printerr (const char *msg)
1105{
1106 write (STDERR_FILENO, msg, strlen (msg));
1107}
1108#endif
1109
483static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg) EV_THROW;
484 1111
485void 1112void ecb_cold
486ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
487{ 1114{
488 syserr_cb = cb; 1115 syserr_cb = cb;
489} 1116}
490 1117
491static void noinline 1118static void noinline ecb_cold
492ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
493{ 1120{
494 if (!msg) 1121 if (!msg)
495 msg = "(libev) system error"; 1122 msg = "(libev) system error";
496 1123
497 if (syserr_cb) 1124 if (syserr_cb)
498 syserr_cb (msg); 1125 syserr_cb (msg);
499 else 1126 else
500 { 1127 {
1128#if EV_AVOID_STDIO
1129 ev_printerr (msg);
1130 ev_printerr (": ");
1131 ev_printerr (strerror (errno));
1132 ev_printerr ("\n");
1133#else
501 perror (msg); 1134 perror (msg);
1135#endif
502 abort (); 1136 abort ();
503 } 1137 }
504} 1138}
505 1139
506static void * 1140static void *
507ev_realloc_emul (void *ptr, long size) 1141ev_realloc_emul (void *ptr, long size)
508{ 1142{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
509 /* some systems, notably openbsd and darwin, fail to properly 1146 /* some systems, notably openbsd and darwin, fail to properly
510 * implement realloc (x, 0) (as required by both ansi c-98 and 1147 * implement realloc (x, 0) (as required by both ansi c-89 and
511 * the single unix specification, so work around them here. 1148 * the single unix specification, so work around them here.
512 */ 1149 */
513 1150
514 if (size) 1151 if (size)
515 return realloc (ptr, size); 1152 return realloc (ptr, size);
516 1153
517 free (ptr); 1154 free (ptr);
518 return 0; 1155 return 0;
1156#endif
519} 1157}
520 1158
521static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
522 1160
523void 1161void ecb_cold
524ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
525{ 1163{
526 alloc = cb; 1164 alloc = cb;
527} 1165}
528 1166
529inline_speed void * 1167inline_speed void *
… …
531{ 1169{
532 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
533 1171
534 if (!ptr && size) 1172 if (!ptr && size)
535 { 1173 {
1174#if EV_AVOID_STDIO
1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1176#else
536 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1178#endif
537 abort (); 1179 abort ();
538 } 1180 }
539 1181
540 return ptr; 1182 return ptr;
541} 1183}
… …
557 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1199 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
558 unsigned char unused; 1200 unsigned char unused;
559#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
560 unsigned int egen; /* generation counter to counter epoll bugs */ 1202 unsigned int egen; /* generation counter to counter epoll bugs */
561#endif 1203#endif
562#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
563 SOCKET handle; 1205 SOCKET handle;
1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
564#endif 1209#endif
565} ANFD; 1210} ANFD;
566 1211
567/* stores the pending event set for a given watcher */ 1212/* stores the pending event set for a given watcher */
568typedef struct 1213typedef struct
… …
610 #undef VAR 1255 #undef VAR
611 }; 1256 };
612 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
613 1258
614 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
615 struct ev_loop *ev_default_loop_ptr; 1260 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
616 1261
617#else 1262#else
618 1263
619 ev_tstamp ev_rt_now; 1264 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
620 #define VAR(name,decl) static decl; 1265 #define VAR(name,decl) static decl;
621 #include "ev_vars.h" 1266 #include "ev_vars.h"
622 #undef VAR 1267 #undef VAR
623 1268
624 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
625 1270
626#endif 1271#endif
627 1272
628#if EV_MINIMAL < 2 1273#if EV_FEATURE_API
629# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1274# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
630# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1275# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
631# define EV_INVOKE_PENDING invoke_cb (EV_A) 1276# define EV_INVOKE_PENDING invoke_cb (EV_A)
632#else 1277#else
633# define EV_RELEASE_CB (void)0 1278# define EV_RELEASE_CB (void)0
634# define EV_ACQUIRE_CB (void)0 1279# define EV_ACQUIRE_CB (void)0
635# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
636#endif 1281#endif
637 1282
638#define EVUNLOOP_RECURSE 0x80 1283#define EVBREAK_RECURSE 0x80
639 1284
640/*****************************************************************************/ 1285/*****************************************************************************/
641 1286
642#ifndef EV_HAVE_EV_TIME 1287#ifndef EV_HAVE_EV_TIME
643ev_tstamp 1288ev_tstamp
644ev_time (void) 1289ev_time (void) EV_THROW
645{ 1290{
646#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
647 if (expect_true (have_realtime)) 1292 if (expect_true (have_realtime))
648 { 1293 {
649 struct timespec ts; 1294 struct timespec ts;
… …
673 return ev_time (); 1318 return ev_time ();
674} 1319}
675 1320
676#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
677ev_tstamp 1322ev_tstamp
678ev_now (EV_P) 1323ev_now (EV_P) EV_THROW
679{ 1324{
680 return ev_rt_now; 1325 return ev_rt_now;
681} 1326}
682#endif 1327#endif
683 1328
684void 1329void
685ev_sleep (ev_tstamp delay) 1330ev_sleep (ev_tstamp delay) EV_THROW
686{ 1331{
687 if (delay > 0.) 1332 if (delay > 0.)
688 { 1333 {
689#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
690 struct timespec ts; 1335 struct timespec ts;
691 1336
692 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
693 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
694
695 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
696#elif defined(_WIN32) 1339#elif defined _WIN32
697 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
698#else 1341#else
699 struct timeval tv; 1342 struct timeval tv;
700 1343
701 tv.tv_sec = (time_t)delay;
702 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
703
704 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
705 /* something not guaranteed by newer posix versions, but guaranteed */ 1345 /* something not guaranteed by newer posix versions, but guaranteed */
706 /* by older ones */ 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
707 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
708#endif 1349#endif
709 } 1350 }
710} 1351}
711 1352
712/*****************************************************************************/ 1353/*****************************************************************************/
713 1354
714#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1355#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
715 1356
716/* find a suitable new size for the given array, */ 1357/* find a suitable new size for the given array, */
717/* hopefully by rounding to a ncie-to-malloc size */ 1358/* hopefully by rounding to a nice-to-malloc size */
718inline_size int 1359inline_size int
719array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
720{ 1361{
721 int ncur = cur + 1; 1362 int ncur = cur + 1;
722 1363
723 do 1364 do
724 ncur <<= 1; 1365 ncur <<= 1;
725 while (cnt > ncur); 1366 while (cnt > ncur);
726 1367
727 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1368 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
728 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
729 { 1370 {
730 ncur *= elem; 1371 ncur *= elem;
731 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1372 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
732 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
734 } 1375 }
735 1376
736 return ncur; 1377 return ncur;
737} 1378}
738 1379
739static noinline void * 1380static void * noinline ecb_cold
740array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
741{ 1382{
742 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
743 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
744} 1385}
… …
747 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
748 1389
749#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
750 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
751 { \ 1392 { \
752 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
753 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
754 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
755 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
756 } 1397 }
757 1398
… …
775pendingcb (EV_P_ ev_prepare *w, int revents) 1416pendingcb (EV_P_ ev_prepare *w, int revents)
776{ 1417{
777} 1418}
778 1419
779void noinline 1420void noinline
780ev_feed_event (EV_P_ void *w, int revents) 1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW
781{ 1422{
782 W w_ = (W)w; 1423 W w_ = (W)w;
783 int pri = ABSPRI (w_); 1424 int pri = ABSPRI (w_);
784 1425
785 if (expect_false (w_->pending)) 1426 if (expect_false (w_->pending))
… …
818} 1459}
819 1460
820/*****************************************************************************/ 1461/*****************************************************************************/
821 1462
822inline_speed void 1463inline_speed void
823fd_event_nc (EV_P_ int fd, int revents) 1464fd_event_nocheck (EV_P_ int fd, int revents)
824{ 1465{
825 ANFD *anfd = anfds + fd; 1466 ANFD *anfd = anfds + fd;
826 ev_io *w; 1467 ev_io *w;
827 1468
828 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1469 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
840fd_event (EV_P_ int fd, int revents) 1481fd_event (EV_P_ int fd, int revents)
841{ 1482{
842 ANFD *anfd = anfds + fd; 1483 ANFD *anfd = anfds + fd;
843 1484
844 if (expect_true (!anfd->reify)) 1485 if (expect_true (!anfd->reify))
845 fd_event_nc (EV_A_ fd, revents); 1486 fd_event_nocheck (EV_A_ fd, revents);
846} 1487}
847 1488
848void 1489void
849ev_feed_fd_event (EV_P_ int fd, int revents) 1490ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
850{ 1491{
851 if (fd >= 0 && fd < anfdmax) 1492 if (fd >= 0 && fd < anfdmax)
852 fd_event_nc (EV_A_ fd, revents); 1493 fd_event_nocheck (EV_A_ fd, revents);
853} 1494}
854 1495
855/* make sure the external fd watch events are in-sync */ 1496/* make sure the external fd watch events are in-sync */
856/* with the kernel/libev internal state */ 1497/* with the kernel/libev internal state */
857inline_size void 1498inline_size void
858fd_reify (EV_P) 1499fd_reify (EV_P)
859{ 1500{
860 int i; 1501 int i;
861 1502
1503#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1504 for (i = 0; i < fdchangecnt; ++i)
1505 {
1506 int fd = fdchanges [i];
1507 ANFD *anfd = anfds + fd;
1508
1509 if (anfd->reify & EV__IOFDSET && anfd->head)
1510 {
1511 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1512
1513 if (handle != anfd->handle)
1514 {
1515 unsigned long arg;
1516
1517 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1518
1519 /* handle changed, but fd didn't - we need to do it in two steps */
1520 backend_modify (EV_A_ fd, anfd->events, 0);
1521 anfd->events = 0;
1522 anfd->handle = handle;
1523 }
1524 }
1525 }
1526#endif
1527
862 for (i = 0; i < fdchangecnt; ++i) 1528 for (i = 0; i < fdchangecnt; ++i)
863 { 1529 {
864 int fd = fdchanges [i]; 1530 int fd = fdchanges [i];
865 ANFD *anfd = anfds + fd; 1531 ANFD *anfd = anfds + fd;
866 ev_io *w; 1532 ev_io *w;
867 1533
868 unsigned char events = 0; 1534 unsigned char o_events = anfd->events;
1535 unsigned char o_reify = anfd->reify;
869 1536
870 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1537 anfd->reify = 0;
871 events |= (unsigned char)w->events;
872 1538
873#if EV_SELECT_IS_WINSOCKET 1539 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
874 if (events)
875 { 1540 {
876 unsigned long arg; 1541 anfd->events = 0;
877 #ifdef EV_FD_TO_WIN32_HANDLE 1542
878 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1543 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
879 #else 1544 anfd->events |= (unsigned char)w->events;
880 anfd->handle = _get_osfhandle (fd); 1545
881 #endif 1546 if (o_events != anfd->events)
882 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1547 o_reify = EV__IOFDSET; /* actually |= */
883 } 1548 }
884#endif
885 1549
886 { 1550 if (o_reify & EV__IOFDSET)
887 unsigned char o_events = anfd->events;
888 unsigned char o_reify = anfd->reify;
889
890 anfd->reify = 0;
891 anfd->events = events;
892
893 if (o_events != events || o_reify & EV__IOFDSET)
894 backend_modify (EV_A_ fd, o_events, events); 1551 backend_modify (EV_A_ fd, o_events, anfd->events);
895 }
896 } 1552 }
897 1553
898 fdchangecnt = 0; 1554 fdchangecnt = 0;
899} 1555}
900 1556
… …
912 fdchanges [fdchangecnt - 1] = fd; 1568 fdchanges [fdchangecnt - 1] = fd;
913 } 1569 }
914} 1570}
915 1571
916/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1572/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
917inline_speed void 1573inline_speed void ecb_cold
918fd_kill (EV_P_ int fd) 1574fd_kill (EV_P_ int fd)
919{ 1575{
920 ev_io *w; 1576 ev_io *w;
921 1577
922 while ((w = (ev_io *)anfds [fd].head)) 1578 while ((w = (ev_io *)anfds [fd].head))
… …
924 ev_io_stop (EV_A_ w); 1580 ev_io_stop (EV_A_ w);
925 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1581 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
926 } 1582 }
927} 1583}
928 1584
929/* check whether the given fd is atcually valid, for error recovery */ 1585/* check whether the given fd is actually valid, for error recovery */
930inline_size int 1586inline_size int ecb_cold
931fd_valid (int fd) 1587fd_valid (int fd)
932{ 1588{
933#ifdef _WIN32 1589#ifdef _WIN32
934 return _get_osfhandle (fd) != -1; 1590 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
935#else 1591#else
936 return fcntl (fd, F_GETFD) != -1; 1592 return fcntl (fd, F_GETFD) != -1;
937#endif 1593#endif
938} 1594}
939 1595
940/* called on EBADF to verify fds */ 1596/* called on EBADF to verify fds */
941static void noinline 1597static void noinline ecb_cold
942fd_ebadf (EV_P) 1598fd_ebadf (EV_P)
943{ 1599{
944 int fd; 1600 int fd;
945 1601
946 for (fd = 0; fd < anfdmax; ++fd) 1602 for (fd = 0; fd < anfdmax; ++fd)
… …
948 if (!fd_valid (fd) && errno == EBADF) 1604 if (!fd_valid (fd) && errno == EBADF)
949 fd_kill (EV_A_ fd); 1605 fd_kill (EV_A_ fd);
950} 1606}
951 1607
952/* called on ENOMEM in select/poll to kill some fds and retry */ 1608/* called on ENOMEM in select/poll to kill some fds and retry */
953static void noinline 1609static void noinline ecb_cold
954fd_enomem (EV_P) 1610fd_enomem (EV_P)
955{ 1611{
956 int fd; 1612 int fd;
957 1613
958 for (fd = anfdmax; fd--; ) 1614 for (fd = anfdmax; fd--; )
… …
976 anfds [fd].emask = 0; 1632 anfds [fd].emask = 0;
977 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1633 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
978 } 1634 }
979} 1635}
980 1636
1637/* used to prepare libev internal fd's */
1638/* this is not fork-safe */
1639inline_speed void
1640fd_intern (int fd)
1641{
1642#ifdef _WIN32
1643 unsigned long arg = 1;
1644 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1645#else
1646 fcntl (fd, F_SETFD, FD_CLOEXEC);
1647 fcntl (fd, F_SETFL, O_NONBLOCK);
1648#endif
1649}
1650
981/*****************************************************************************/ 1651/*****************************************************************************/
982 1652
983/* 1653/*
984 * the heap functions want a real array index. array index 0 uis guaranteed to not 1654 * the heap functions want a real array index. array index 0 is guaranteed to not
985 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1655 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
986 * the branching factor of the d-tree. 1656 * the branching factor of the d-tree.
987 */ 1657 */
988 1658
989/* 1659/*
… …
1057 1727
1058 for (;;) 1728 for (;;)
1059 { 1729 {
1060 int c = k << 1; 1730 int c = k << 1;
1061 1731
1062 if (c > N + HEAP0 - 1) 1732 if (c >= N + HEAP0)
1063 break; 1733 break;
1064 1734
1065 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1735 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1066 ? 1 : 0; 1736 ? 1 : 0;
1067 1737
… …
1103 1773
1104/* move an element suitably so it is in a correct place */ 1774/* move an element suitably so it is in a correct place */
1105inline_size void 1775inline_size void
1106adjustheap (ANHE *heap, int N, int k) 1776adjustheap (ANHE *heap, int N, int k)
1107{ 1777{
1108 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1778 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1109 upheap (heap, k); 1779 upheap (heap, k);
1110 else 1780 else
1111 downheap (heap, N, k); 1781 downheap (heap, N, k);
1112} 1782}
1113 1783
… …
1137 1807
1138static ANSIG signals [EV_NSIG - 1]; 1808static ANSIG signals [EV_NSIG - 1];
1139 1809
1140/*****************************************************************************/ 1810/*****************************************************************************/
1141 1811
1142/* used to prepare libev internal fd's */ 1812#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1143/* this is not fork-safe */
1144inline_speed void
1145fd_intern (int fd)
1146{
1147#ifdef _WIN32
1148 unsigned long arg = 1;
1149 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1150#else
1151 fcntl (fd, F_SETFD, FD_CLOEXEC);
1152 fcntl (fd, F_SETFL, O_NONBLOCK);
1153#endif
1154}
1155 1813
1156static void noinline 1814static void noinline ecb_cold
1157evpipe_init (EV_P) 1815evpipe_init (EV_P)
1158{ 1816{
1159 if (!ev_is_active (&pipe_w)) 1817 if (!ev_is_active (&pipe_w))
1160 { 1818 {
1161#if EV_USE_EVENTFD 1819# if EV_USE_EVENTFD
1162 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1820 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1163 if (evfd < 0 && errno == EINVAL) 1821 if (evfd < 0 && errno == EINVAL)
1164 evfd = eventfd (0, 0); 1822 evfd = eventfd (0, 0);
1165 1823
1166 if (evfd >= 0) 1824 if (evfd >= 0)
… …
1168 evpipe [0] = -1; 1826 evpipe [0] = -1;
1169 fd_intern (evfd); /* doing it twice doesn't hurt */ 1827 fd_intern (evfd); /* doing it twice doesn't hurt */
1170 ev_io_set (&pipe_w, evfd, EV_READ); 1828 ev_io_set (&pipe_w, evfd, EV_READ);
1171 } 1829 }
1172 else 1830 else
1173#endif 1831# endif
1174 { 1832 {
1175 while (pipe (evpipe)) 1833 while (pipe (evpipe))
1176 ev_syserr ("(libev) error creating signal/async pipe"); 1834 ev_syserr ("(libev) error creating signal/async pipe");
1177 1835
1178 fd_intern (evpipe [0]); 1836 fd_intern (evpipe [0]);
… …
1183 ev_io_start (EV_A_ &pipe_w); 1841 ev_io_start (EV_A_ &pipe_w);
1184 ev_unref (EV_A); /* watcher should not keep loop alive */ 1842 ev_unref (EV_A); /* watcher should not keep loop alive */
1185 } 1843 }
1186} 1844}
1187 1845
1188inline_size void 1846inline_speed void
1189evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1847evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1190{ 1848{
1191 if (!*flag) 1849 if (expect_true (*flag))
1850 return;
1851
1852 *flag = 1;
1853
1854 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1855
1856 pipe_write_skipped = 1;
1857
1858 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1859
1860 if (pipe_write_wanted)
1192 { 1861 {
1862 int old_errno;
1863
1864 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1865
1193 int old_errno = errno; /* save errno because write might clobber it */ 1866 old_errno = errno; /* save errno because write will clobber it */
1194
1195 *flag = 1;
1196 1867
1197#if EV_USE_EVENTFD 1868#if EV_USE_EVENTFD
1198 if (evfd >= 0) 1869 if (evfd >= 0)
1199 { 1870 {
1200 uint64_t counter = 1; 1871 uint64_t counter = 1;
1201 write (evfd, &counter, sizeof (uint64_t)); 1872 write (evfd, &counter, sizeof (uint64_t));
1202 } 1873 }
1203 else 1874 else
1204#endif 1875#endif
1876 {
1877 /* win32 people keep sending patches that change this write() to send() */
1878 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1879 /* so when you think this write should be a send instead, please find out */
1880 /* where your send() is from - it's definitely not the microsoft send, and */
1881 /* tell me. thank you. */
1882 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1883 /* check the ev documentation on how to use this flag */
1205 write (evpipe [1], &old_errno, 1); 1884 write (evpipe [1], &(evpipe [1]), 1);
1885 }
1206 1886
1207 errno = old_errno; 1887 errno = old_errno;
1208 } 1888 }
1209} 1889}
1210 1890
… …
1213static void 1893static void
1214pipecb (EV_P_ ev_io *iow, int revents) 1894pipecb (EV_P_ ev_io *iow, int revents)
1215{ 1895{
1216 int i; 1896 int i;
1217 1897
1898 if (revents & EV_READ)
1899 {
1218#if EV_USE_EVENTFD 1900#if EV_USE_EVENTFD
1219 if (evfd >= 0) 1901 if (evfd >= 0)
1220 { 1902 {
1221 uint64_t counter; 1903 uint64_t counter;
1222 read (evfd, &counter, sizeof (uint64_t)); 1904 read (evfd, &counter, sizeof (uint64_t));
1223 } 1905 }
1224 else 1906 else
1225#endif 1907#endif
1226 { 1908 {
1227 char dummy; 1909 char dummy;
1910 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1228 read (evpipe [0], &dummy, 1); 1911 read (evpipe [0], &dummy, 1);
1912 }
1229 } 1913 }
1230 1914
1915 pipe_write_skipped = 0;
1916
1917#if EV_SIGNAL_ENABLE
1231 if (sig_pending) 1918 if (sig_pending)
1232 { 1919 {
1233 sig_pending = 0; 1920 sig_pending = 0;
1234 1921
1235 for (i = EV_NSIG - 1; i--; ) 1922 for (i = EV_NSIG - 1; i--; )
1236 if (expect_false (signals [i].pending)) 1923 if (expect_false (signals [i].pending))
1237 ev_feed_signal_event (EV_A_ i + 1); 1924 ev_feed_signal_event (EV_A_ i + 1);
1238 } 1925 }
1926#endif
1239 1927
1240#if EV_ASYNC_ENABLE 1928#if EV_ASYNC_ENABLE
1241 if (async_pending) 1929 if (async_pending)
1242 { 1930 {
1243 async_pending = 0; 1931 async_pending = 0;
… …
1252#endif 1940#endif
1253} 1941}
1254 1942
1255/*****************************************************************************/ 1943/*****************************************************************************/
1256 1944
1945void
1946ev_feed_signal (int signum) EV_THROW
1947{
1948#if EV_MULTIPLICITY
1949 EV_P = signals [signum - 1].loop;
1950
1951 if (!EV_A)
1952 return;
1953#endif
1954
1955 if (!ev_active (&pipe_w))
1956 return;
1957
1958 signals [signum - 1].pending = 1;
1959 evpipe_write (EV_A_ &sig_pending);
1960}
1961
1257static void 1962static void
1258ev_sighandler (int signum) 1963ev_sighandler (int signum)
1259{ 1964{
1260#if EV_MULTIPLICITY
1261 EV_P = signals [signum - 1].loop;
1262#endif
1263
1264#if _WIN32 1965#ifdef _WIN32
1265 signal (signum, ev_sighandler); 1966 signal (signum, ev_sighandler);
1266#endif 1967#endif
1267 1968
1268 signals [signum - 1].pending = 1; 1969 ev_feed_signal (signum);
1269 evpipe_write (EV_A_ &sig_pending);
1270} 1970}
1271 1971
1272void noinline 1972void noinline
1273ev_feed_signal_event (EV_P_ int signum) 1973ev_feed_signal_event (EV_P_ int signum) EV_THROW
1274{ 1974{
1275 WL w; 1975 WL w;
1276 1976
1277 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1977 if (expect_false (signum <= 0 || signum > EV_NSIG))
1278 return; 1978 return;
… …
1311 break; 2011 break;
1312 } 2012 }
1313} 2013}
1314#endif 2014#endif
1315 2015
2016#endif
2017
1316/*****************************************************************************/ 2018/*****************************************************************************/
1317 2019
2020#if EV_CHILD_ENABLE
1318static WL childs [EV_PID_HASHSIZE]; 2021static WL childs [EV_PID_HASHSIZE];
1319
1320#ifndef _WIN32
1321 2022
1322static ev_signal childev; 2023static ev_signal childev;
1323 2024
1324#ifndef WIFCONTINUED 2025#ifndef WIFCONTINUED
1325# define WIFCONTINUED(status) 0 2026# define WIFCONTINUED(status) 0
… …
1330child_reap (EV_P_ int chain, int pid, int status) 2031child_reap (EV_P_ int chain, int pid, int status)
1331{ 2032{
1332 ev_child *w; 2033 ev_child *w;
1333 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2034 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1334 2035
1335 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2036 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1336 { 2037 {
1337 if ((w->pid == pid || !w->pid) 2038 if ((w->pid == pid || !w->pid)
1338 && (!traced || (w->flags & 1))) 2039 && (!traced || (w->flags & 1)))
1339 { 2040 {
1340 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2041 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1365 /* make sure we are called again until all children have been reaped */ 2066 /* make sure we are called again until all children have been reaped */
1366 /* we need to do it this way so that the callback gets called before we continue */ 2067 /* we need to do it this way so that the callback gets called before we continue */
1367 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2068 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1368 2069
1369 child_reap (EV_A_ pid, pid, status); 2070 child_reap (EV_A_ pid, pid, status);
1370 if (EV_PID_HASHSIZE > 1) 2071 if ((EV_PID_HASHSIZE) > 1)
1371 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2072 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1372} 2073}
1373 2074
1374#endif 2075#endif
1375 2076
1376/*****************************************************************************/ 2077/*****************************************************************************/
1377 2078
2079#if EV_USE_IOCP
2080# include "ev_iocp.c"
2081#endif
1378#if EV_USE_PORT 2082#if EV_USE_PORT
1379# include "ev_port.c" 2083# include "ev_port.c"
1380#endif 2084#endif
1381#if EV_USE_KQUEUE 2085#if EV_USE_KQUEUE
1382# include "ev_kqueue.c" 2086# include "ev_kqueue.c"
… …
1389#endif 2093#endif
1390#if EV_USE_SELECT 2094#if EV_USE_SELECT
1391# include "ev_select.c" 2095# include "ev_select.c"
1392#endif 2096#endif
1393 2097
1394int 2098int ecb_cold
1395ev_version_major (void) 2099ev_version_major (void) EV_THROW
1396{ 2100{
1397 return EV_VERSION_MAJOR; 2101 return EV_VERSION_MAJOR;
1398} 2102}
1399 2103
1400int 2104int ecb_cold
1401ev_version_minor (void) 2105ev_version_minor (void) EV_THROW
1402{ 2106{
1403 return EV_VERSION_MINOR; 2107 return EV_VERSION_MINOR;
1404} 2108}
1405 2109
1406/* return true if we are running with elevated privileges and should ignore env variables */ 2110/* return true if we are running with elevated privileges and should ignore env variables */
1407int inline_size 2111int inline_size ecb_cold
1408enable_secure (void) 2112enable_secure (void)
1409{ 2113{
1410#ifdef _WIN32 2114#ifdef _WIN32
1411 return 0; 2115 return 0;
1412#else 2116#else
1413 return getuid () != geteuid () 2117 return getuid () != geteuid ()
1414 || getgid () != getegid (); 2118 || getgid () != getegid ();
1415#endif 2119#endif
1416} 2120}
1417 2121
1418unsigned int 2122unsigned int ecb_cold
1419ev_supported_backends (void) 2123ev_supported_backends (void) EV_THROW
1420{ 2124{
1421 unsigned int flags = 0; 2125 unsigned int flags = 0;
1422 2126
1423 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2127 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1424 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2128 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1427 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2131 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1428 2132
1429 return flags; 2133 return flags;
1430} 2134}
1431 2135
1432unsigned int 2136unsigned int ecb_cold
1433ev_recommended_backends (void) 2137ev_recommended_backends (void) EV_THROW
1434{ 2138{
1435 unsigned int flags = ev_supported_backends (); 2139 unsigned int flags = ev_supported_backends ();
1436 2140
1437#ifndef __NetBSD__ 2141#ifndef __NetBSD__
1438 /* kqueue is borked on everything but netbsd apparently */ 2142 /* kqueue is borked on everything but netbsd apparently */
… …
1442#ifdef __APPLE__ 2146#ifdef __APPLE__
1443 /* only select works correctly on that "unix-certified" platform */ 2147 /* only select works correctly on that "unix-certified" platform */
1444 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2148 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1445 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2149 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1446#endif 2150#endif
2151#ifdef __FreeBSD__
2152 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2153#endif
1447 2154
1448 return flags; 2155 return flags;
1449} 2156}
1450 2157
2158unsigned int ecb_cold
2159ev_embeddable_backends (void) EV_THROW
2160{
2161 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2162
2163 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2164 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2165 flags &= ~EVBACKEND_EPOLL;
2166
2167 return flags;
2168}
2169
1451unsigned int 2170unsigned int
1452ev_embeddable_backends (void) 2171ev_backend (EV_P) EV_THROW
1453{ 2172{
1454 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2173 return backend;
1455
1456 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1457 /* please fix it and tell me how to detect the fix */
1458 flags &= ~EVBACKEND_EPOLL;
1459
1460 return flags;
1461} 2174}
1462 2175
2176#if EV_FEATURE_API
1463unsigned int 2177unsigned int
1464ev_backend (EV_P) 2178ev_iteration (EV_P) EV_THROW
1465{ 2179{
1466 return backend; 2180 return loop_count;
1467} 2181}
1468 2182
1469#if EV_MINIMAL < 2
1470unsigned int 2183unsigned int
1471ev_loop_count (EV_P) 2184ev_depth (EV_P) EV_THROW
1472{
1473 return loop_count;
1474}
1475
1476unsigned int
1477ev_loop_depth (EV_P)
1478{ 2185{
1479 return loop_depth; 2186 return loop_depth;
1480} 2187}
1481 2188
1482void 2189void
1483ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2190ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1484{ 2191{
1485 io_blocktime = interval; 2192 io_blocktime = interval;
1486} 2193}
1487 2194
1488void 2195void
1489ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2196ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1490{ 2197{
1491 timeout_blocktime = interval; 2198 timeout_blocktime = interval;
1492} 2199}
1493 2200
1494void 2201void
1495ev_set_userdata (EV_P_ void *data) 2202ev_set_userdata (EV_P_ void *data) EV_THROW
1496{ 2203{
1497 userdata = data; 2204 userdata = data;
1498} 2205}
1499 2206
1500void * 2207void *
1501ev_userdata (EV_P) 2208ev_userdata (EV_P) EV_THROW
1502{ 2209{
1503 return userdata; 2210 return userdata;
1504} 2211}
1505 2212
2213void
1506void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2214ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1507{ 2215{
1508 invoke_cb = invoke_pending_cb; 2216 invoke_cb = invoke_pending_cb;
1509} 2217}
1510 2218
2219void
1511void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2220ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) EV_THROW
1512{ 2221{
1513 release_cb = release; 2222 release_cb = release;
1514 acquire_cb = acquire; 2223 acquire_cb = acquire;
1515} 2224}
1516#endif 2225#endif
1517 2226
1518/* initialise a loop structure, must be zero-initialised */ 2227/* initialise a loop structure, must be zero-initialised */
1519static void noinline 2228static void noinline ecb_cold
1520loop_init (EV_P_ unsigned int flags) 2229loop_init (EV_P_ unsigned int flags) EV_THROW
1521{ 2230{
1522 if (!backend) 2231 if (!backend)
1523 { 2232 {
2233 origflags = flags;
2234
1524#if EV_USE_REALTIME 2235#if EV_USE_REALTIME
1525 if (!have_realtime) 2236 if (!have_realtime)
1526 { 2237 {
1527 struct timespec ts; 2238 struct timespec ts;
1528 2239
… …
1550 if (!(flags & EVFLAG_NOENV) 2261 if (!(flags & EVFLAG_NOENV)
1551 && !enable_secure () 2262 && !enable_secure ()
1552 && getenv ("LIBEV_FLAGS")) 2263 && getenv ("LIBEV_FLAGS"))
1553 flags = atoi (getenv ("LIBEV_FLAGS")); 2264 flags = atoi (getenv ("LIBEV_FLAGS"));
1554 2265
1555 ev_rt_now = ev_time (); 2266 ev_rt_now = ev_time ();
1556 mn_now = get_clock (); 2267 mn_now = get_clock ();
1557 now_floor = mn_now; 2268 now_floor = mn_now;
1558 rtmn_diff = ev_rt_now - mn_now; 2269 rtmn_diff = ev_rt_now - mn_now;
1559#if EV_MINIMAL < 2 2270#if EV_FEATURE_API
1560 invoke_cb = ev_invoke_pending; 2271 invoke_cb = ev_invoke_pending;
1561#endif 2272#endif
1562 2273
1563 io_blocktime = 0.; 2274 io_blocktime = 0.;
1564 timeout_blocktime = 0.; 2275 timeout_blocktime = 0.;
1565 backend = 0; 2276 backend = 0;
1566 backend_fd = -1; 2277 backend_fd = -1;
1567 sig_pending = 0; 2278 sig_pending = 0;
1568#if EV_ASYNC_ENABLE 2279#if EV_ASYNC_ENABLE
1569 async_pending = 0; 2280 async_pending = 0;
1570#endif 2281#endif
2282 pipe_write_skipped = 0;
2283 pipe_write_wanted = 0;
1571#if EV_USE_INOTIFY 2284#if EV_USE_INOTIFY
1572 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2285 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1573#endif 2286#endif
1574#if EV_USE_SIGNALFD 2287#if EV_USE_SIGNALFD
1575 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2288 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1576#endif 2289#endif
1577 2290
1578 if (!(flags & 0x0000ffffU)) 2291 if (!(flags & EVBACKEND_MASK))
1579 flags |= ev_recommended_backends (); 2292 flags |= ev_recommended_backends ();
1580 2293
2294#if EV_USE_IOCP
2295 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2296#endif
1581#if EV_USE_PORT 2297#if EV_USE_PORT
1582 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2298 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1583#endif 2299#endif
1584#if EV_USE_KQUEUE 2300#if EV_USE_KQUEUE
1585 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2301 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1594 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2310 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1595#endif 2311#endif
1596 2312
1597 ev_prepare_init (&pending_w, pendingcb); 2313 ev_prepare_init (&pending_w, pendingcb);
1598 2314
2315#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1599 ev_init (&pipe_w, pipecb); 2316 ev_init (&pipe_w, pipecb);
1600 ev_set_priority (&pipe_w, EV_MAXPRI); 2317 ev_set_priority (&pipe_w, EV_MAXPRI);
2318#endif
1601 } 2319 }
1602} 2320}
1603 2321
1604/* free up a loop structure */ 2322/* free up a loop structure */
1605static void noinline 2323void ecb_cold
1606loop_destroy (EV_P) 2324ev_loop_destroy (EV_P) EV_THROW
1607{ 2325{
1608 int i; 2326 int i;
2327
2328#if EV_MULTIPLICITY
2329 /* mimic free (0) */
2330 if (!EV_A)
2331 return;
2332#endif
2333
2334#if EV_CLEANUP_ENABLE
2335 /* queue cleanup watchers (and execute them) */
2336 if (expect_false (cleanupcnt))
2337 {
2338 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2339 EV_INVOKE_PENDING;
2340 }
2341#endif
2342
2343#if EV_CHILD_ENABLE
2344 if (ev_is_active (&childev))
2345 {
2346 ev_ref (EV_A); /* child watcher */
2347 ev_signal_stop (EV_A_ &childev);
2348 }
2349#endif
1609 2350
1610 if (ev_is_active (&pipe_w)) 2351 if (ev_is_active (&pipe_w))
1611 { 2352 {
1612 /*ev_ref (EV_A);*/ 2353 /*ev_ref (EV_A);*/
1613 /*ev_io_stop (EV_A_ &pipe_w);*/ 2354 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1617 close (evfd); 2358 close (evfd);
1618#endif 2359#endif
1619 2360
1620 if (evpipe [0] >= 0) 2361 if (evpipe [0] >= 0)
1621 { 2362 {
1622 close (evpipe [0]); 2363 EV_WIN32_CLOSE_FD (evpipe [0]);
1623 close (evpipe [1]); 2364 EV_WIN32_CLOSE_FD (evpipe [1]);
1624 } 2365 }
1625 } 2366 }
1626 2367
1627#if EV_USE_SIGNALFD 2368#if EV_USE_SIGNALFD
1628 if (ev_is_active (&sigfd_w)) 2369 if (ev_is_active (&sigfd_w))
1629 {
1630 /*ev_ref (EV_A);*/
1631 /*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633 close (sigfd); 2370 close (sigfd);
1634 }
1635#endif 2371#endif
1636 2372
1637#if EV_USE_INOTIFY 2373#if EV_USE_INOTIFY
1638 if (fs_fd >= 0) 2374 if (fs_fd >= 0)
1639 close (fs_fd); 2375 close (fs_fd);
1640#endif 2376#endif
1641 2377
1642 if (backend_fd >= 0) 2378 if (backend_fd >= 0)
1643 close (backend_fd); 2379 close (backend_fd);
1644 2380
2381#if EV_USE_IOCP
2382 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2383#endif
1645#if EV_USE_PORT 2384#if EV_USE_PORT
1646 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2385 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1647#endif 2386#endif
1648#if EV_USE_KQUEUE 2387#if EV_USE_KQUEUE
1649 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2388 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1676 array_free (periodic, EMPTY); 2415 array_free (periodic, EMPTY);
1677#endif 2416#endif
1678#if EV_FORK_ENABLE 2417#if EV_FORK_ENABLE
1679 array_free (fork, EMPTY); 2418 array_free (fork, EMPTY);
1680#endif 2419#endif
2420#if EV_CLEANUP_ENABLE
2421 array_free (cleanup, EMPTY);
2422#endif
1681 array_free (prepare, EMPTY); 2423 array_free (prepare, EMPTY);
1682 array_free (check, EMPTY); 2424 array_free (check, EMPTY);
1683#if EV_ASYNC_ENABLE 2425#if EV_ASYNC_ENABLE
1684 array_free (async, EMPTY); 2426 array_free (async, EMPTY);
1685#endif 2427#endif
1686 2428
1687 backend = 0; 2429 backend = 0;
2430
2431#if EV_MULTIPLICITY
2432 if (ev_is_default_loop (EV_A))
2433#endif
2434 ev_default_loop_ptr = 0;
2435#if EV_MULTIPLICITY
2436 else
2437 ev_free (EV_A);
2438#endif
1688} 2439}
1689 2440
1690#if EV_USE_INOTIFY 2441#if EV_USE_INOTIFY
1691inline_size void infy_fork (EV_P); 2442inline_size void infy_fork (EV_P);
1692#endif 2443#endif
… …
1707 infy_fork (EV_A); 2458 infy_fork (EV_A);
1708#endif 2459#endif
1709 2460
1710 if (ev_is_active (&pipe_w)) 2461 if (ev_is_active (&pipe_w))
1711 { 2462 {
1712 /* this "locks" the handlers against writing to the pipe */ 2463 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1713 /* while we modify the fd vars */
1714 sig_pending = 1;
1715#if EV_ASYNC_ENABLE
1716 async_pending = 1;
1717#endif
1718 2464
1719 ev_ref (EV_A); 2465 ev_ref (EV_A);
1720 ev_io_stop (EV_A_ &pipe_w); 2466 ev_io_stop (EV_A_ &pipe_w);
1721 2467
1722#if EV_USE_EVENTFD 2468#if EV_USE_EVENTFD
… …
1724 close (evfd); 2470 close (evfd);
1725#endif 2471#endif
1726 2472
1727 if (evpipe [0] >= 0) 2473 if (evpipe [0] >= 0)
1728 { 2474 {
1729 close (evpipe [0]); 2475 EV_WIN32_CLOSE_FD (evpipe [0]);
1730 close (evpipe [1]); 2476 EV_WIN32_CLOSE_FD (evpipe [1]);
1731 } 2477 }
1732 2478
2479#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1733 evpipe_init (EV_A); 2480 evpipe_init (EV_A);
1734 /* now iterate over everything, in case we missed something */ 2481 /* now iterate over everything, in case we missed something */
1735 pipecb (EV_A_ &pipe_w, EV_READ); 2482 pipecb (EV_A_ &pipe_w, EV_READ);
2483#endif
1736 } 2484 }
1737 2485
1738 postfork = 0; 2486 postfork = 0;
1739} 2487}
1740 2488
1741#if EV_MULTIPLICITY 2489#if EV_MULTIPLICITY
1742 2490
1743struct ev_loop * 2491struct ev_loop * ecb_cold
1744ev_loop_new (unsigned int flags) 2492ev_loop_new (unsigned int flags) EV_THROW
1745{ 2493{
1746 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2494 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747 2495
1748 memset (EV_A, 0, sizeof (struct ev_loop)); 2496 memset (EV_A, 0, sizeof (struct ev_loop));
1749 loop_init (EV_A_ flags); 2497 loop_init (EV_A_ flags);
1750 2498
1751 if (ev_backend (EV_A)) 2499 if (ev_backend (EV_A))
1752 return EV_A; 2500 return EV_A;
1753 2501
2502 ev_free (EV_A);
1754 return 0; 2503 return 0;
1755} 2504}
1756 2505
1757void
1758ev_loop_destroy (EV_P)
1759{
1760 loop_destroy (EV_A);
1761 ev_free (loop);
1762}
1763
1764void
1765ev_loop_fork (EV_P)
1766{
1767 postfork = 1; /* must be in line with ev_default_fork */
1768}
1769#endif /* multiplicity */ 2506#endif /* multiplicity */
1770 2507
1771#if EV_VERIFY 2508#if EV_VERIFY
1772static void noinline 2509static void noinline ecb_cold
1773verify_watcher (EV_P_ W w) 2510verify_watcher (EV_P_ W w)
1774{ 2511{
1775 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2512 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1776 2513
1777 if (w->pending) 2514 if (w->pending)
1778 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2515 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1779} 2516}
1780 2517
1781static void noinline 2518static void noinline ecb_cold
1782verify_heap (EV_P_ ANHE *heap, int N) 2519verify_heap (EV_P_ ANHE *heap, int N)
1783{ 2520{
1784 int i; 2521 int i;
1785 2522
1786 for (i = HEAP0; i < N + HEAP0; ++i) 2523 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1791 2528
1792 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2529 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1793 } 2530 }
1794} 2531}
1795 2532
1796static void noinline 2533static void noinline ecb_cold
1797array_verify (EV_P_ W *ws, int cnt) 2534array_verify (EV_P_ W *ws, int cnt)
1798{ 2535{
1799 while (cnt--) 2536 while (cnt--)
1800 { 2537 {
1801 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2538 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1802 verify_watcher (EV_A_ ws [cnt]); 2539 verify_watcher (EV_A_ ws [cnt]);
1803 } 2540 }
1804} 2541}
1805#endif 2542#endif
1806 2543
1807#if EV_MINIMAL < 2 2544#if EV_FEATURE_API
1808void 2545void ecb_cold
1809ev_loop_verify (EV_P) 2546ev_verify (EV_P) EV_THROW
1810{ 2547{
1811#if EV_VERIFY 2548#if EV_VERIFY
1812 int i; 2549 int i;
1813 WL w; 2550 WL w;
1814 2551
… …
1848#if EV_FORK_ENABLE 2585#if EV_FORK_ENABLE
1849 assert (forkmax >= forkcnt); 2586 assert (forkmax >= forkcnt);
1850 array_verify (EV_A_ (W *)forks, forkcnt); 2587 array_verify (EV_A_ (W *)forks, forkcnt);
1851#endif 2588#endif
1852 2589
2590#if EV_CLEANUP_ENABLE
2591 assert (cleanupmax >= cleanupcnt);
2592 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2593#endif
2594
1853#if EV_ASYNC_ENABLE 2595#if EV_ASYNC_ENABLE
1854 assert (asyncmax >= asynccnt); 2596 assert (asyncmax >= asynccnt);
1855 array_verify (EV_A_ (W *)asyncs, asynccnt); 2597 array_verify (EV_A_ (W *)asyncs, asynccnt);
1856#endif 2598#endif
1857 2599
2600#if EV_PREPARE_ENABLE
1858 assert (preparemax >= preparecnt); 2601 assert (preparemax >= preparecnt);
1859 array_verify (EV_A_ (W *)prepares, preparecnt); 2602 array_verify (EV_A_ (W *)prepares, preparecnt);
2603#endif
1860 2604
2605#if EV_CHECK_ENABLE
1861 assert (checkmax >= checkcnt); 2606 assert (checkmax >= checkcnt);
1862 array_verify (EV_A_ (W *)checks, checkcnt); 2607 array_verify (EV_A_ (W *)checks, checkcnt);
2608#endif
1863 2609
1864# if 0 2610# if 0
2611#if EV_CHILD_ENABLE
1865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2612 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1866 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2613 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2614#endif
1867# endif 2615# endif
1868#endif 2616#endif
1869} 2617}
1870#endif 2618#endif
1871 2619
1872#if EV_MULTIPLICITY 2620#if EV_MULTIPLICITY
1873struct ev_loop * 2621struct ev_loop * ecb_cold
1874ev_default_loop_init (unsigned int flags)
1875#else 2622#else
1876int 2623int
2624#endif
1877ev_default_loop (unsigned int flags) 2625ev_default_loop (unsigned int flags) EV_THROW
1878#endif
1879{ 2626{
1880 if (!ev_default_loop_ptr) 2627 if (!ev_default_loop_ptr)
1881 { 2628 {
1882#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1883 EV_P = ev_default_loop_ptr = &default_loop_struct; 2630 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1887 2634
1888 loop_init (EV_A_ flags); 2635 loop_init (EV_A_ flags);
1889 2636
1890 if (ev_backend (EV_A)) 2637 if (ev_backend (EV_A))
1891 { 2638 {
1892#ifndef _WIN32 2639#if EV_CHILD_ENABLE
1893 ev_signal_init (&childev, childcb, SIGCHLD); 2640 ev_signal_init (&childev, childcb, SIGCHLD);
1894 ev_set_priority (&childev, EV_MAXPRI); 2641 ev_set_priority (&childev, EV_MAXPRI);
1895 ev_signal_start (EV_A_ &childev); 2642 ev_signal_start (EV_A_ &childev);
1896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2643 ev_unref (EV_A); /* child watcher should not keep loop alive */
1897#endif 2644#endif
… …
1902 2649
1903 return ev_default_loop_ptr; 2650 return ev_default_loop_ptr;
1904} 2651}
1905 2652
1906void 2653void
1907ev_default_destroy (void) 2654ev_loop_fork (EV_P) EV_THROW
1908{ 2655{
1909#if EV_MULTIPLICITY
1910 EV_P = ev_default_loop_ptr;
1911#endif
1912
1913 ev_default_loop_ptr = 0;
1914
1915#ifndef _WIN32
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918#endif
1919
1920 loop_destroy (EV_A);
1921}
1922
1923void
1924ev_default_fork (void)
1925{
1926#if EV_MULTIPLICITY
1927 EV_P = ev_default_loop_ptr;
1928#endif
1929
1930 postfork = 1; /* must be in line with ev_loop_fork */ 2656 postfork = 1; /* must be in line with ev_default_fork */
1931} 2657}
1932 2658
1933/*****************************************************************************/ 2659/*****************************************************************************/
1934 2660
1935void 2661void
… …
1937{ 2663{
1938 EV_CB_INVOKE ((W)w, revents); 2664 EV_CB_INVOKE ((W)w, revents);
1939} 2665}
1940 2666
1941unsigned int 2667unsigned int
1942ev_pending_count (EV_P) 2668ev_pending_count (EV_P) EV_THROW
1943{ 2669{
1944 int pri; 2670 int pri;
1945 unsigned int count = 0; 2671 unsigned int count = 0;
1946 2672
1947 for (pri = NUMPRI; pri--; ) 2673 for (pri = NUMPRI; pri--; )
… …
1957 2683
1958 for (pri = NUMPRI; pri--; ) 2684 for (pri = NUMPRI; pri--; )
1959 while (pendingcnt [pri]) 2685 while (pendingcnt [pri])
1960 { 2686 {
1961 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2687 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1962
1963 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1964 /* ^ this is no longer true, as pending_w could be here */
1965 2688
1966 p->w->pending = 0; 2689 p->w->pending = 0;
1967 EV_CB_INVOKE (p->w, p->events); 2690 EV_CB_INVOKE (p->w, p->events);
1968 EV_FREQUENT_CHECK; 2691 EV_FREQUENT_CHECK;
1969 } 2692 }
… …
2026 EV_FREQUENT_CHECK; 2749 EV_FREQUENT_CHECK;
2027 feed_reverse (EV_A_ (W)w); 2750 feed_reverse (EV_A_ (W)w);
2028 } 2751 }
2029 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2752 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2030 2753
2031 feed_reverse_done (EV_A_ EV_TIMEOUT); 2754 feed_reverse_done (EV_A_ EV_TIMER);
2032 } 2755 }
2033} 2756}
2034 2757
2035#if EV_PERIODIC_ENABLE 2758#if EV_PERIODIC_ENABLE
2759
2760static void noinline
2761periodic_recalc (EV_P_ ev_periodic *w)
2762{
2763 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2764 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2765
2766 /* the above almost always errs on the low side */
2767 while (at <= ev_rt_now)
2768 {
2769 ev_tstamp nat = at + w->interval;
2770
2771 /* when resolution fails us, we use ev_rt_now */
2772 if (expect_false (nat == at))
2773 {
2774 at = ev_rt_now;
2775 break;
2776 }
2777
2778 at = nat;
2779 }
2780
2781 ev_at (w) = at;
2782}
2783
2036/* make periodics pending */ 2784/* make periodics pending */
2037inline_size void 2785inline_size void
2038periodics_reify (EV_P) 2786periodics_reify (EV_P)
2039{ 2787{
2040 EV_FREQUENT_CHECK; 2788 EV_FREQUENT_CHECK;
… …
2059 ANHE_at_cache (periodics [HEAP0]); 2807 ANHE_at_cache (periodics [HEAP0]);
2060 downheap (periodics, periodiccnt, HEAP0); 2808 downheap (periodics, periodiccnt, HEAP0);
2061 } 2809 }
2062 else if (w->interval) 2810 else if (w->interval)
2063 { 2811 {
2064 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2812 periodic_recalc (EV_A_ w);
2065 /* if next trigger time is not sufficiently in the future, put it there */
2066 /* this might happen because of floating point inexactness */
2067 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2068 {
2069 ev_at (w) += w->interval;
2070
2071 /* if interval is unreasonably low we might still have a time in the past */
2072 /* so correct this. this will make the periodic very inexact, but the user */
2073 /* has effectively asked to get triggered more often than possible */
2074 if (ev_at (w) < ev_rt_now)
2075 ev_at (w) = ev_rt_now;
2076 }
2077
2078 ANHE_at_cache (periodics [HEAP0]); 2813 ANHE_at_cache (periodics [HEAP0]);
2079 downheap (periodics, periodiccnt, HEAP0); 2814 downheap (periodics, periodiccnt, HEAP0);
2080 } 2815 }
2081 else 2816 else
2082 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2817 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2089 feed_reverse_done (EV_A_ EV_PERIODIC); 2824 feed_reverse_done (EV_A_ EV_PERIODIC);
2090 } 2825 }
2091} 2826}
2092 2827
2093/* simply recalculate all periodics */ 2828/* simply recalculate all periodics */
2094/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2829/* TODO: maybe ensure that at least one event happens when jumping forward? */
2095static void noinline 2830static void noinline ecb_cold
2096periodics_reschedule (EV_P) 2831periodics_reschedule (EV_P)
2097{ 2832{
2098 int i; 2833 int i;
2099 2834
2100 /* adjust periodics after time jump */ 2835 /* adjust periodics after time jump */
… …
2103 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2838 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2104 2839
2105 if (w->reschedule_cb) 2840 if (w->reschedule_cb)
2106 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2841 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2107 else if (w->interval) 2842 else if (w->interval)
2108 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2843 periodic_recalc (EV_A_ w);
2109 2844
2110 ANHE_at_cache (periodics [i]); 2845 ANHE_at_cache (periodics [i]);
2111 } 2846 }
2112 2847
2113 reheap (periodics, periodiccnt); 2848 reheap (periodics, periodiccnt);
2114} 2849}
2115#endif 2850#endif
2116 2851
2117/* adjust all timers by a given offset */ 2852/* adjust all timers by a given offset */
2118static void noinline 2853static void noinline ecb_cold
2119timers_reschedule (EV_P_ ev_tstamp adjust) 2854timers_reschedule (EV_P_ ev_tstamp adjust)
2120{ 2855{
2121 int i; 2856 int i;
2122 2857
2123 for (i = 0; i < timercnt; ++i) 2858 for (i = 0; i < timercnt; ++i)
… …
2127 ANHE_at_cache (*he); 2862 ANHE_at_cache (*he);
2128 } 2863 }
2129} 2864}
2130 2865
2131/* fetch new monotonic and realtime times from the kernel */ 2866/* fetch new monotonic and realtime times from the kernel */
2132/* also detetc if there was a timejump, and act accordingly */ 2867/* also detect if there was a timejump, and act accordingly */
2133inline_speed void 2868inline_speed void
2134time_update (EV_P_ ev_tstamp max_block) 2869time_update (EV_P_ ev_tstamp max_block)
2135{ 2870{
2136#if EV_USE_MONOTONIC 2871#if EV_USE_MONOTONIC
2137 if (expect_true (have_monotonic)) 2872 if (expect_true (have_monotonic))
… …
2160 * doesn't hurt either as we only do this on time-jumps or 2895 * doesn't hurt either as we only do this on time-jumps or
2161 * in the unlikely event of having been preempted here. 2896 * in the unlikely event of having been preempted here.
2162 */ 2897 */
2163 for (i = 4; --i; ) 2898 for (i = 4; --i; )
2164 { 2899 {
2900 ev_tstamp diff;
2165 rtmn_diff = ev_rt_now - mn_now; 2901 rtmn_diff = ev_rt_now - mn_now;
2166 2902
2903 diff = odiff - rtmn_diff;
2904
2167 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2905 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2168 return; /* all is well */ 2906 return; /* all is well */
2169 2907
2170 ev_rt_now = ev_time (); 2908 ev_rt_now = ev_time ();
2171 mn_now = get_clock (); 2909 mn_now = get_clock ();
2172 now_floor = mn_now; 2910 now_floor = mn_now;
… …
2194 2932
2195 mn_now = ev_rt_now; 2933 mn_now = ev_rt_now;
2196 } 2934 }
2197} 2935}
2198 2936
2199void 2937int
2200ev_loop (EV_P_ int flags) 2938ev_run (EV_P_ int flags)
2201{ 2939{
2202#if EV_MINIMAL < 2 2940#if EV_FEATURE_API
2203 ++loop_depth; 2941 ++loop_depth;
2204#endif 2942#endif
2205 2943
2206 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2944 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2207 2945
2208 loop_done = EVUNLOOP_CANCEL; 2946 loop_done = EVBREAK_CANCEL;
2209 2947
2210 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2948 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2211 2949
2212 do 2950 do
2213 { 2951 {
2214#if EV_VERIFY >= 2 2952#if EV_VERIFY >= 2
2215 ev_loop_verify (EV_A); 2953 ev_verify (EV_A);
2216#endif 2954#endif
2217 2955
2218#ifndef _WIN32 2956#ifndef _WIN32
2219 if (expect_false (curpid)) /* penalise the forking check even more */ 2957 if (expect_false (curpid)) /* penalise the forking check even more */
2220 if (expect_false (getpid () != curpid)) 2958 if (expect_false (getpid () != curpid))
… …
2232 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2970 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2233 EV_INVOKE_PENDING; 2971 EV_INVOKE_PENDING;
2234 } 2972 }
2235#endif 2973#endif
2236 2974
2975#if EV_PREPARE_ENABLE
2237 /* queue prepare watchers (and execute them) */ 2976 /* queue prepare watchers (and execute them) */
2238 if (expect_false (preparecnt)) 2977 if (expect_false (preparecnt))
2239 { 2978 {
2240 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2979 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2241 EV_INVOKE_PENDING; 2980 EV_INVOKE_PENDING;
2242 } 2981 }
2982#endif
2243 2983
2244 if (expect_false (loop_done)) 2984 if (expect_false (loop_done))
2245 break; 2985 break;
2246 2986
2247 /* we might have forked, so reify kernel state if necessary */ 2987 /* we might have forked, so reify kernel state if necessary */
… …
2254 /* calculate blocking time */ 2994 /* calculate blocking time */
2255 { 2995 {
2256 ev_tstamp waittime = 0.; 2996 ev_tstamp waittime = 0.;
2257 ev_tstamp sleeptime = 0.; 2997 ev_tstamp sleeptime = 0.;
2258 2998
2999 /* remember old timestamp for io_blocktime calculation */
3000 ev_tstamp prev_mn_now = mn_now;
3001
3002 /* update time to cancel out callback processing overhead */
3003 time_update (EV_A_ 1e100);
3004
3005 /* from now on, we want a pipe-wake-up */
3006 pipe_write_wanted = 1;
3007
3008 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3009
2259 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3010 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2260 { 3011 {
2261 /* remember old timestamp for io_blocktime calculation */
2262 ev_tstamp prev_mn_now = mn_now;
2263
2264 /* update time to cancel out callback processing overhead */
2265 time_update (EV_A_ 1e100);
2266
2267 waittime = MAX_BLOCKTIME; 3012 waittime = MAX_BLOCKTIME;
2268 3013
2269 if (timercnt) 3014 if (timercnt)
2270 { 3015 {
2271 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3016 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2272 if (waittime > to) waittime = to; 3017 if (waittime > to) waittime = to;
2273 } 3018 }
2274 3019
2275#if EV_PERIODIC_ENABLE 3020#if EV_PERIODIC_ENABLE
2276 if (periodiccnt) 3021 if (periodiccnt)
2277 { 3022 {
2278 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3023 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2279 if (waittime > to) waittime = to; 3024 if (waittime > to) waittime = to;
2280 } 3025 }
2281#endif 3026#endif
2282 3027
2283 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3028 /* don't let timeouts decrease the waittime below timeout_blocktime */
2284 if (expect_false (waittime < timeout_blocktime)) 3029 if (expect_false (waittime < timeout_blocktime))
2285 waittime = timeout_blocktime; 3030 waittime = timeout_blocktime;
3031
3032 /* at this point, we NEED to wait, so we have to ensure */
3033 /* to pass a minimum nonzero value to the backend */
3034 if (expect_false (waittime < backend_mintime))
3035 waittime = backend_mintime;
2286 3036
2287 /* extra check because io_blocktime is commonly 0 */ 3037 /* extra check because io_blocktime is commonly 0 */
2288 if (expect_false (io_blocktime)) 3038 if (expect_false (io_blocktime))
2289 { 3039 {
2290 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3040 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2291 3041
2292 if (sleeptime > waittime - backend_fudge) 3042 if (sleeptime > waittime - backend_mintime)
2293 sleeptime = waittime - backend_fudge; 3043 sleeptime = waittime - backend_mintime;
2294 3044
2295 if (expect_true (sleeptime > 0.)) 3045 if (expect_true (sleeptime > 0.))
2296 { 3046 {
2297 ev_sleep (sleeptime); 3047 ev_sleep (sleeptime);
2298 waittime -= sleeptime; 3048 waittime -= sleeptime;
2299 } 3049 }
2300 } 3050 }
2301 } 3051 }
2302 3052
2303#if EV_MINIMAL < 2 3053#if EV_FEATURE_API
2304 ++loop_count; 3054 ++loop_count;
2305#endif 3055#endif
2306 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3056 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2307 backend_poll (EV_A_ waittime); 3057 backend_poll (EV_A_ waittime);
2308 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3058 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3059
3060 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3061
3062 if (pipe_write_skipped)
3063 {
3064 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3065 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3066 }
3067
2309 3068
2310 /* update ev_rt_now, do magic */ 3069 /* update ev_rt_now, do magic */
2311 time_update (EV_A_ waittime + sleeptime); 3070 time_update (EV_A_ waittime + sleeptime);
2312 } 3071 }
2313 3072
… …
2320#if EV_IDLE_ENABLE 3079#if EV_IDLE_ENABLE
2321 /* queue idle watchers unless other events are pending */ 3080 /* queue idle watchers unless other events are pending */
2322 idle_reify (EV_A); 3081 idle_reify (EV_A);
2323#endif 3082#endif
2324 3083
3084#if EV_CHECK_ENABLE
2325 /* queue check watchers, to be executed first */ 3085 /* queue check watchers, to be executed first */
2326 if (expect_false (checkcnt)) 3086 if (expect_false (checkcnt))
2327 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3087 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3088#endif
2328 3089
2329 EV_INVOKE_PENDING; 3090 EV_INVOKE_PENDING;
2330 } 3091 }
2331 while (expect_true ( 3092 while (expect_true (
2332 activecnt 3093 activecnt
2333 && !loop_done 3094 && !loop_done
2334 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3095 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2335 )); 3096 ));
2336 3097
2337 if (loop_done == EVUNLOOP_ONE) 3098 if (loop_done == EVBREAK_ONE)
2338 loop_done = EVUNLOOP_CANCEL; 3099 loop_done = EVBREAK_CANCEL;
2339 3100
2340#if EV_MINIMAL < 2 3101#if EV_FEATURE_API
2341 --loop_depth; 3102 --loop_depth;
2342#endif 3103#endif
3104
3105 return activecnt;
2343} 3106}
2344 3107
2345void 3108void
2346ev_unloop (EV_P_ int how) 3109ev_break (EV_P_ int how) EV_THROW
2347{ 3110{
2348 loop_done = how; 3111 loop_done = how;
2349} 3112}
2350 3113
2351void 3114void
2352ev_ref (EV_P) 3115ev_ref (EV_P) EV_THROW
2353{ 3116{
2354 ++activecnt; 3117 ++activecnt;
2355} 3118}
2356 3119
2357void 3120void
2358ev_unref (EV_P) 3121ev_unref (EV_P) EV_THROW
2359{ 3122{
2360 --activecnt; 3123 --activecnt;
2361} 3124}
2362 3125
2363void 3126void
2364ev_now_update (EV_P) 3127ev_now_update (EV_P) EV_THROW
2365{ 3128{
2366 time_update (EV_A_ 1e100); 3129 time_update (EV_A_ 1e100);
2367} 3130}
2368 3131
2369void 3132void
2370ev_suspend (EV_P) 3133ev_suspend (EV_P) EV_THROW
2371{ 3134{
2372 ev_now_update (EV_A); 3135 ev_now_update (EV_A);
2373} 3136}
2374 3137
2375void 3138void
2376ev_resume (EV_P) 3139ev_resume (EV_P) EV_THROW
2377{ 3140{
2378 ev_tstamp mn_prev = mn_now; 3141 ev_tstamp mn_prev = mn_now;
2379 3142
2380 ev_now_update (EV_A); 3143 ev_now_update (EV_A);
2381 timers_reschedule (EV_A_ mn_now - mn_prev); 3144 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2420 w->pending = 0; 3183 w->pending = 0;
2421 } 3184 }
2422} 3185}
2423 3186
2424int 3187int
2425ev_clear_pending (EV_P_ void *w) 3188ev_clear_pending (EV_P_ void *w) EV_THROW
2426{ 3189{
2427 W w_ = (W)w; 3190 W w_ = (W)w;
2428 int pending = w_->pending; 3191 int pending = w_->pending;
2429 3192
2430 if (expect_true (pending)) 3193 if (expect_true (pending))
… …
2463} 3226}
2464 3227
2465/*****************************************************************************/ 3228/*****************************************************************************/
2466 3229
2467void noinline 3230void noinline
2468ev_io_start (EV_P_ ev_io *w) 3231ev_io_start (EV_P_ ev_io *w) EV_THROW
2469{ 3232{
2470 int fd = w->fd; 3233 int fd = w->fd;
2471 3234
2472 if (expect_false (ev_is_active (w))) 3235 if (expect_false (ev_is_active (w)))
2473 return; 3236 return;
2474 3237
2475 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3238 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3239 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2477 3240
2478 EV_FREQUENT_CHECK; 3241 EV_FREQUENT_CHECK;
2479 3242
2480 ev_start (EV_A_ (W)w, 1); 3243 ev_start (EV_A_ (W)w, 1);
2481 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3244 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2486 3249
2487 EV_FREQUENT_CHECK; 3250 EV_FREQUENT_CHECK;
2488} 3251}
2489 3252
2490void noinline 3253void noinline
2491ev_io_stop (EV_P_ ev_io *w) 3254ev_io_stop (EV_P_ ev_io *w) EV_THROW
2492{ 3255{
2493 clear_pending (EV_A_ (W)w); 3256 clear_pending (EV_A_ (W)w);
2494 if (expect_false (!ev_is_active (w))) 3257 if (expect_false (!ev_is_active (w)))
2495 return; 3258 return;
2496 3259
… …
2499 EV_FREQUENT_CHECK; 3262 EV_FREQUENT_CHECK;
2500 3263
2501 wlist_del (&anfds[w->fd].head, (WL)w); 3264 wlist_del (&anfds[w->fd].head, (WL)w);
2502 ev_stop (EV_A_ (W)w); 3265 ev_stop (EV_A_ (W)w);
2503 3266
2504 fd_change (EV_A_ w->fd, 1); 3267 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2505 3268
2506 EV_FREQUENT_CHECK; 3269 EV_FREQUENT_CHECK;
2507} 3270}
2508 3271
2509void noinline 3272void noinline
2510ev_timer_start (EV_P_ ev_timer *w) 3273ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2511{ 3274{
2512 if (expect_false (ev_is_active (w))) 3275 if (expect_false (ev_is_active (w)))
2513 return; 3276 return;
2514 3277
2515 ev_at (w) += mn_now; 3278 ev_at (w) += mn_now;
… …
2529 3292
2530 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3293 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2531} 3294}
2532 3295
2533void noinline 3296void noinline
2534ev_timer_stop (EV_P_ ev_timer *w) 3297ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2535{ 3298{
2536 clear_pending (EV_A_ (W)w); 3299 clear_pending (EV_A_ (W)w);
2537 if (expect_false (!ev_is_active (w))) 3300 if (expect_false (!ev_is_active (w)))
2538 return; 3301 return;
2539 3302
… …
2551 timers [active] = timers [timercnt + HEAP0]; 3314 timers [active] = timers [timercnt + HEAP0];
2552 adjustheap (timers, timercnt, active); 3315 adjustheap (timers, timercnt, active);
2553 } 3316 }
2554 } 3317 }
2555 3318
2556 EV_FREQUENT_CHECK;
2557
2558 ev_at (w) -= mn_now; 3319 ev_at (w) -= mn_now;
2559 3320
2560 ev_stop (EV_A_ (W)w); 3321 ev_stop (EV_A_ (W)w);
3322
3323 EV_FREQUENT_CHECK;
2561} 3324}
2562 3325
2563void noinline 3326void noinline
2564ev_timer_again (EV_P_ ev_timer *w) 3327ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2565{ 3328{
2566 EV_FREQUENT_CHECK; 3329 EV_FREQUENT_CHECK;
3330
3331 clear_pending (EV_A_ (W)w);
2567 3332
2568 if (ev_is_active (w)) 3333 if (ev_is_active (w))
2569 { 3334 {
2570 if (w->repeat) 3335 if (w->repeat)
2571 { 3336 {
… …
2584 3349
2585 EV_FREQUENT_CHECK; 3350 EV_FREQUENT_CHECK;
2586} 3351}
2587 3352
2588ev_tstamp 3353ev_tstamp
2589ev_timer_remaining (EV_P_ ev_timer *w) 3354ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2590{ 3355{
2591 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3356 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2592} 3357}
2593 3358
2594#if EV_PERIODIC_ENABLE 3359#if EV_PERIODIC_ENABLE
2595void noinline 3360void noinline
2596ev_periodic_start (EV_P_ ev_periodic *w) 3361ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2597{ 3362{
2598 if (expect_false (ev_is_active (w))) 3363 if (expect_false (ev_is_active (w)))
2599 return; 3364 return;
2600 3365
2601 if (w->reschedule_cb) 3366 if (w->reschedule_cb)
2602 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3367 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2603 else if (w->interval) 3368 else if (w->interval)
2604 { 3369 {
2605 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3370 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2606 /* this formula differs from the one in periodic_reify because we do not always round up */ 3371 periodic_recalc (EV_A_ w);
2607 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2608 } 3372 }
2609 else 3373 else
2610 ev_at (w) = w->offset; 3374 ev_at (w) = w->offset;
2611 3375
2612 EV_FREQUENT_CHECK; 3376 EV_FREQUENT_CHECK;
… …
2622 3386
2623 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3387 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2624} 3388}
2625 3389
2626void noinline 3390void noinline
2627ev_periodic_stop (EV_P_ ev_periodic *w) 3391ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2628{ 3392{
2629 clear_pending (EV_A_ (W)w); 3393 clear_pending (EV_A_ (W)w);
2630 if (expect_false (!ev_is_active (w))) 3394 if (expect_false (!ev_is_active (w)))
2631 return; 3395 return;
2632 3396
… …
2644 periodics [active] = periodics [periodiccnt + HEAP0]; 3408 periodics [active] = periodics [periodiccnt + HEAP0];
2645 adjustheap (periodics, periodiccnt, active); 3409 adjustheap (periodics, periodiccnt, active);
2646 } 3410 }
2647 } 3411 }
2648 3412
2649 EV_FREQUENT_CHECK;
2650
2651 ev_stop (EV_A_ (W)w); 3413 ev_stop (EV_A_ (W)w);
3414
3415 EV_FREQUENT_CHECK;
2652} 3416}
2653 3417
2654void noinline 3418void noinline
2655ev_periodic_again (EV_P_ ev_periodic *w) 3419ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2656{ 3420{
2657 /* TODO: use adjustheap and recalculation */ 3421 /* TODO: use adjustheap and recalculation */
2658 ev_periodic_stop (EV_A_ w); 3422 ev_periodic_stop (EV_A_ w);
2659 ev_periodic_start (EV_A_ w); 3423 ev_periodic_start (EV_A_ w);
2660} 3424}
… …
2662 3426
2663#ifndef SA_RESTART 3427#ifndef SA_RESTART
2664# define SA_RESTART 0 3428# define SA_RESTART 0
2665#endif 3429#endif
2666 3430
3431#if EV_SIGNAL_ENABLE
3432
2667void noinline 3433void noinline
2668ev_signal_start (EV_P_ ev_signal *w) 3434ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2669{ 3435{
2670 if (expect_false (ev_is_active (w))) 3436 if (expect_false (ev_is_active (w)))
2671 return; 3437 return;
2672 3438
2673 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3439 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2674 3440
2675#if EV_MULTIPLICITY 3441#if EV_MULTIPLICITY
2676 assert (("libev: tried to attach to a signal from two different loops", 3442 assert (("libev: a signal must not be attached to two different loops",
2677 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3443 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2678 3444
2679 signals [w->signum - 1].loop = EV_A; 3445 signals [w->signum - 1].loop = EV_A;
2680#endif 3446#endif
2681 3447
… …
2717 if (!((WL)w)->next) 3483 if (!((WL)w)->next)
2718# if EV_USE_SIGNALFD 3484# if EV_USE_SIGNALFD
2719 if (sigfd < 0) /*TODO*/ 3485 if (sigfd < 0) /*TODO*/
2720# endif 3486# endif
2721 { 3487 {
2722# if _WIN32 3488# ifdef _WIN32
3489 evpipe_init (EV_A);
3490
2723 signal (w->signum, ev_sighandler); 3491 signal (w->signum, ev_sighandler);
2724# else 3492# else
2725 struct sigaction sa; 3493 struct sigaction sa;
2726 3494
2727 evpipe_init (EV_A); 3495 evpipe_init (EV_A);
… …
2729 sa.sa_handler = ev_sighandler; 3497 sa.sa_handler = ev_sighandler;
2730 sigfillset (&sa.sa_mask); 3498 sigfillset (&sa.sa_mask);
2731 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3499 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2732 sigaction (w->signum, &sa, 0); 3500 sigaction (w->signum, &sa, 0);
2733 3501
3502 if (origflags & EVFLAG_NOSIGMASK)
3503 {
2734 sigemptyset (&sa.sa_mask); 3504 sigemptyset (&sa.sa_mask);
2735 sigaddset (&sa.sa_mask, w->signum); 3505 sigaddset (&sa.sa_mask, w->signum);
2736 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3506 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3507 }
2737#endif 3508#endif
2738 } 3509 }
2739 3510
2740 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2741} 3512}
2742 3513
2743void noinline 3514void noinline
2744ev_signal_stop (EV_P_ ev_signal *w) 3515ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2745{ 3516{
2746 clear_pending (EV_A_ (W)w); 3517 clear_pending (EV_A_ (W)w);
2747 if (expect_false (!ev_is_active (w))) 3518 if (expect_false (!ev_is_active (w)))
2748 return; 3519 return;
2749 3520
… …
2758 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3529 signals [w->signum - 1].loop = 0; /* unattach from signal */
2759#endif 3530#endif
2760#if EV_USE_SIGNALFD 3531#if EV_USE_SIGNALFD
2761 if (sigfd >= 0) 3532 if (sigfd >= 0)
2762 { 3533 {
2763 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3534 sigset_t ss;
3535
3536 sigemptyset (&ss);
3537 sigaddset (&ss, w->signum);
2764 sigdelset (&sigfd_set, w->signum); 3538 sigdelset (&sigfd_set, w->signum);
3539
2765 signalfd (sigfd, &sigfd_set, 0); 3540 signalfd (sigfd, &sigfd_set, 0);
2766 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3541 sigprocmask (SIG_UNBLOCK, &ss, 0);
2767 /*TODO: maybe unblock signal? */
2768 } 3542 }
2769 else 3543 else
2770#endif 3544#endif
2771 signal (w->signum, SIG_DFL); 3545 signal (w->signum, SIG_DFL);
2772 } 3546 }
2773 3547
2774 EV_FREQUENT_CHECK; 3548 EV_FREQUENT_CHECK;
2775} 3549}
2776 3550
3551#endif
3552
3553#if EV_CHILD_ENABLE
3554
2777void 3555void
2778ev_child_start (EV_P_ ev_child *w) 3556ev_child_start (EV_P_ ev_child *w) EV_THROW
2779{ 3557{
2780#if EV_MULTIPLICITY 3558#if EV_MULTIPLICITY
2781 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3559 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2782#endif 3560#endif
2783 if (expect_false (ev_is_active (w))) 3561 if (expect_false (ev_is_active (w)))
2784 return; 3562 return;
2785 3563
2786 EV_FREQUENT_CHECK; 3564 EV_FREQUENT_CHECK;
2787 3565
2788 ev_start (EV_A_ (W)w, 1); 3566 ev_start (EV_A_ (W)w, 1);
2789 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3567 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2790 3568
2791 EV_FREQUENT_CHECK; 3569 EV_FREQUENT_CHECK;
2792} 3570}
2793 3571
2794void 3572void
2795ev_child_stop (EV_P_ ev_child *w) 3573ev_child_stop (EV_P_ ev_child *w) EV_THROW
2796{ 3574{
2797 clear_pending (EV_A_ (W)w); 3575 clear_pending (EV_A_ (W)w);
2798 if (expect_false (!ev_is_active (w))) 3576 if (expect_false (!ev_is_active (w)))
2799 return; 3577 return;
2800 3578
2801 EV_FREQUENT_CHECK; 3579 EV_FREQUENT_CHECK;
2802 3580
2803 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3581 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2804 ev_stop (EV_A_ (W)w); 3582 ev_stop (EV_A_ (W)w);
2805 3583
2806 EV_FREQUENT_CHECK; 3584 EV_FREQUENT_CHECK;
2807} 3585}
3586
3587#endif
2808 3588
2809#if EV_STAT_ENABLE 3589#if EV_STAT_ENABLE
2810 3590
2811# ifdef _WIN32 3591# ifdef _WIN32
2812# undef lstat 3592# undef lstat
… …
2818#define MIN_STAT_INTERVAL 0.1074891 3598#define MIN_STAT_INTERVAL 0.1074891
2819 3599
2820static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3600static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2821 3601
2822#if EV_USE_INOTIFY 3602#if EV_USE_INOTIFY
2823# define EV_INOTIFY_BUFSIZE 8192 3603
3604/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3605# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2824 3606
2825static void noinline 3607static void noinline
2826infy_add (EV_P_ ev_stat *w) 3608infy_add (EV_P_ ev_stat *w)
2827{ 3609{
2828 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3610 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2829 3611
2830 if (w->wd < 0) 3612 if (w->wd >= 0)
3613 {
3614 struct statfs sfs;
3615
3616 /* now local changes will be tracked by inotify, but remote changes won't */
3617 /* unless the filesystem is known to be local, we therefore still poll */
3618 /* also do poll on <2.6.25, but with normal frequency */
3619
3620 if (!fs_2625)
3621 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3622 else if (!statfs (w->path, &sfs)
3623 && (sfs.f_type == 0x1373 /* devfs */
3624 || sfs.f_type == 0xEF53 /* ext2/3 */
3625 || sfs.f_type == 0x3153464a /* jfs */
3626 || sfs.f_type == 0x52654973 /* reiser3 */
3627 || sfs.f_type == 0x01021994 /* tempfs */
3628 || sfs.f_type == 0x58465342 /* xfs */))
3629 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3630 else
3631 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2831 { 3632 }
3633 else
3634 {
3635 /* can't use inotify, continue to stat */
2832 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3636 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2833 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2834 3637
2835 /* monitor some parent directory for speedup hints */ 3638 /* if path is not there, monitor some parent directory for speedup hints */
2836 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3639 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2837 /* but an efficiency issue only */ 3640 /* but an efficiency issue only */
2838 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3641 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2839 { 3642 {
2840 char path [4096]; 3643 char path [4096];
… …
2850 if (!pend || pend == path) 3653 if (!pend || pend == path)
2851 break; 3654 break;
2852 3655
2853 *pend = 0; 3656 *pend = 0;
2854 w->wd = inotify_add_watch (fs_fd, path, mask); 3657 w->wd = inotify_add_watch (fs_fd, path, mask);
2855 } 3658 }
2856 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3659 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2857 } 3660 }
2858 } 3661 }
2859 3662
2860 if (w->wd >= 0) 3663 if (w->wd >= 0)
2861 {
2862 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3664 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2863 3665
2864 /* now local changes will be tracked by inotify, but remote changes won't */ 3666 /* now re-arm timer, if required */
2865 /* unless the filesystem it known to be local, we therefore still poll */ 3667 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2866 /* also do poll on <2.6.25, but with normal frequency */
2867 struct statfs sfs;
2868
2869 if (fs_2625 && !statfs (w->path, &sfs))
2870 if (sfs.f_type == 0x1373 /* devfs */
2871 || sfs.f_type == 0xEF53 /* ext2/3 */
2872 || sfs.f_type == 0x3153464a /* jfs */
2873 || sfs.f_type == 0x52654973 /* reiser3 */
2874 || sfs.f_type == 0x01021994 /* tempfs */
2875 || sfs.f_type == 0x58465342 /* xfs */)
2876 return;
2877
2878 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2879 ev_timer_again (EV_A_ &w->timer); 3668 ev_timer_again (EV_A_ &w->timer);
2880 } 3669 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2881} 3670}
2882 3671
2883static void noinline 3672static void noinline
2884infy_del (EV_P_ ev_stat *w) 3673infy_del (EV_P_ ev_stat *w)
2885{ 3674{
… …
2888 3677
2889 if (wd < 0) 3678 if (wd < 0)
2890 return; 3679 return;
2891 3680
2892 w->wd = -2; 3681 w->wd = -2;
2893 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3682 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2894 wlist_del (&fs_hash [slot].head, (WL)w); 3683 wlist_del (&fs_hash [slot].head, (WL)w);
2895 3684
2896 /* remove this watcher, if others are watching it, they will rearm */ 3685 /* remove this watcher, if others are watching it, they will rearm */
2897 inotify_rm_watch (fs_fd, wd); 3686 inotify_rm_watch (fs_fd, wd);
2898} 3687}
… …
2900static void noinline 3689static void noinline
2901infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3690infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2902{ 3691{
2903 if (slot < 0) 3692 if (slot < 0)
2904 /* overflow, need to check for all hash slots */ 3693 /* overflow, need to check for all hash slots */
2905 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3694 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2906 infy_wd (EV_A_ slot, wd, ev); 3695 infy_wd (EV_A_ slot, wd, ev);
2907 else 3696 else
2908 { 3697 {
2909 WL w_; 3698 WL w_;
2910 3699
2911 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3700 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2912 { 3701 {
2913 ev_stat *w = (ev_stat *)w_; 3702 ev_stat *w = (ev_stat *)w_;
2914 w_ = w_->next; /* lets us remove this watcher and all before it */ 3703 w_ = w_->next; /* lets us remove this watcher and all before it */
2915 3704
2916 if (w->wd == wd || wd == -1) 3705 if (w->wd == wd || wd == -1)
2917 { 3706 {
2918 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3707 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2919 { 3708 {
2920 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3709 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2921 w->wd = -1; 3710 w->wd = -1;
2922 infy_add (EV_A_ w); /* re-add, no matter what */ 3711 infy_add (EV_A_ w); /* re-add, no matter what */
2923 } 3712 }
2924 3713
2925 stat_timer_cb (EV_A_ &w->timer, 0); 3714 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2930 3719
2931static void 3720static void
2932infy_cb (EV_P_ ev_io *w, int revents) 3721infy_cb (EV_P_ ev_io *w, int revents)
2933{ 3722{
2934 char buf [EV_INOTIFY_BUFSIZE]; 3723 char buf [EV_INOTIFY_BUFSIZE];
2935 struct inotify_event *ev = (struct inotify_event *)buf;
2936 int ofs; 3724 int ofs;
2937 int len = read (fs_fd, buf, sizeof (buf)); 3725 int len = read (fs_fd, buf, sizeof (buf));
2938 3726
2939 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3727 for (ofs = 0; ofs < len; )
3728 {
3729 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2940 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3730 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3731 ofs += sizeof (struct inotify_event) + ev->len;
3732 }
2941} 3733}
2942 3734
2943inline_size void 3735inline_size void ecb_cold
2944check_2625 (EV_P) 3736ev_check_2625 (EV_P)
2945{ 3737{
2946 /* kernels < 2.6.25 are borked 3738 /* kernels < 2.6.25 are borked
2947 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3739 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2948 */ 3740 */
2949 struct utsname buf; 3741 if (ev_linux_version () < 0x020619)
2950 int major, minor, micro;
2951
2952 if (uname (&buf))
2953 return; 3742 return;
2954 3743
2955 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2956 return;
2957
2958 if (major < 2
2959 || (major == 2 && minor < 6)
2960 || (major == 2 && minor == 6 && micro < 25))
2961 return;
2962
2963 fs_2625 = 1; 3744 fs_2625 = 1;
3745}
3746
3747inline_size int
3748infy_newfd (void)
3749{
3750#if defined IN_CLOEXEC && defined IN_NONBLOCK
3751 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3752 if (fd >= 0)
3753 return fd;
3754#endif
3755 return inotify_init ();
2964} 3756}
2965 3757
2966inline_size void 3758inline_size void
2967infy_init (EV_P) 3759infy_init (EV_P)
2968{ 3760{
2969 if (fs_fd != -2) 3761 if (fs_fd != -2)
2970 return; 3762 return;
2971 3763
2972 fs_fd = -1; 3764 fs_fd = -1;
2973 3765
2974 check_2625 (EV_A); 3766 ev_check_2625 (EV_A);
2975 3767
2976 fs_fd = inotify_init (); 3768 fs_fd = infy_newfd ();
2977 3769
2978 if (fs_fd >= 0) 3770 if (fs_fd >= 0)
2979 { 3771 {
3772 fd_intern (fs_fd);
2980 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3773 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2981 ev_set_priority (&fs_w, EV_MAXPRI); 3774 ev_set_priority (&fs_w, EV_MAXPRI);
2982 ev_io_start (EV_A_ &fs_w); 3775 ev_io_start (EV_A_ &fs_w);
3776 ev_unref (EV_A);
2983 } 3777 }
2984} 3778}
2985 3779
2986inline_size void 3780inline_size void
2987infy_fork (EV_P) 3781infy_fork (EV_P)
… …
2989 int slot; 3783 int slot;
2990 3784
2991 if (fs_fd < 0) 3785 if (fs_fd < 0)
2992 return; 3786 return;
2993 3787
3788 ev_ref (EV_A);
3789 ev_io_stop (EV_A_ &fs_w);
2994 close (fs_fd); 3790 close (fs_fd);
2995 fs_fd = inotify_init (); 3791 fs_fd = infy_newfd ();
2996 3792
3793 if (fs_fd >= 0)
3794 {
3795 fd_intern (fs_fd);
3796 ev_io_set (&fs_w, fs_fd, EV_READ);
3797 ev_io_start (EV_A_ &fs_w);
3798 ev_unref (EV_A);
3799 }
3800
2997 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3801 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2998 { 3802 {
2999 WL w_ = fs_hash [slot].head; 3803 WL w_ = fs_hash [slot].head;
3000 fs_hash [slot].head = 0; 3804 fs_hash [slot].head = 0;
3001 3805
3002 while (w_) 3806 while (w_)
… …
3007 w->wd = -1; 3811 w->wd = -1;
3008 3812
3009 if (fs_fd >= 0) 3813 if (fs_fd >= 0)
3010 infy_add (EV_A_ w); /* re-add, no matter what */ 3814 infy_add (EV_A_ w); /* re-add, no matter what */
3011 else 3815 else
3816 {
3817 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3818 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3012 ev_timer_again (EV_A_ &w->timer); 3819 ev_timer_again (EV_A_ &w->timer);
3820 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3821 }
3013 } 3822 }
3014 } 3823 }
3015} 3824}
3016 3825
3017#endif 3826#endif
… …
3021#else 3830#else
3022# define EV_LSTAT(p,b) lstat (p, b) 3831# define EV_LSTAT(p,b) lstat (p, b)
3023#endif 3832#endif
3024 3833
3025void 3834void
3026ev_stat_stat (EV_P_ ev_stat *w) 3835ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3027{ 3836{
3028 if (lstat (w->path, &w->attr) < 0) 3837 if (lstat (w->path, &w->attr) < 0)
3029 w->attr.st_nlink = 0; 3838 w->attr.st_nlink = 0;
3030 else if (!w->attr.st_nlink) 3839 else if (!w->attr.st_nlink)
3031 w->attr.st_nlink = 1; 3840 w->attr.st_nlink = 1;
… …
3034static void noinline 3843static void noinline
3035stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3844stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3036{ 3845{
3037 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3846 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3038 3847
3039 /* we copy this here each the time so that */ 3848 ev_statdata prev = w->attr;
3040 /* prev has the old value when the callback gets invoked */
3041 w->prev = w->attr;
3042 ev_stat_stat (EV_A_ w); 3849 ev_stat_stat (EV_A_ w);
3043 3850
3044 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3851 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3045 if ( 3852 if (
3046 w->prev.st_dev != w->attr.st_dev 3853 prev.st_dev != w->attr.st_dev
3047 || w->prev.st_ino != w->attr.st_ino 3854 || prev.st_ino != w->attr.st_ino
3048 || w->prev.st_mode != w->attr.st_mode 3855 || prev.st_mode != w->attr.st_mode
3049 || w->prev.st_nlink != w->attr.st_nlink 3856 || prev.st_nlink != w->attr.st_nlink
3050 || w->prev.st_uid != w->attr.st_uid 3857 || prev.st_uid != w->attr.st_uid
3051 || w->prev.st_gid != w->attr.st_gid 3858 || prev.st_gid != w->attr.st_gid
3052 || w->prev.st_rdev != w->attr.st_rdev 3859 || prev.st_rdev != w->attr.st_rdev
3053 || w->prev.st_size != w->attr.st_size 3860 || prev.st_size != w->attr.st_size
3054 || w->prev.st_atime != w->attr.st_atime 3861 || prev.st_atime != w->attr.st_atime
3055 || w->prev.st_mtime != w->attr.st_mtime 3862 || prev.st_mtime != w->attr.st_mtime
3056 || w->prev.st_ctime != w->attr.st_ctime 3863 || prev.st_ctime != w->attr.st_ctime
3057 ) { 3864 ) {
3865 /* we only update w->prev on actual differences */
3866 /* in case we test more often than invoke the callback, */
3867 /* to ensure that prev is always different to attr */
3868 w->prev = prev;
3869
3058 #if EV_USE_INOTIFY 3870 #if EV_USE_INOTIFY
3059 if (fs_fd >= 0) 3871 if (fs_fd >= 0)
3060 { 3872 {
3061 infy_del (EV_A_ w); 3873 infy_del (EV_A_ w);
3062 infy_add (EV_A_ w); 3874 infy_add (EV_A_ w);
… …
3067 ev_feed_event (EV_A_ w, EV_STAT); 3879 ev_feed_event (EV_A_ w, EV_STAT);
3068 } 3880 }
3069} 3881}
3070 3882
3071void 3883void
3072ev_stat_start (EV_P_ ev_stat *w) 3884ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3073{ 3885{
3074 if (expect_false (ev_is_active (w))) 3886 if (expect_false (ev_is_active (w)))
3075 return; 3887 return;
3076 3888
3077 ev_stat_stat (EV_A_ w); 3889 ev_stat_stat (EV_A_ w);
… …
3087 3899
3088 if (fs_fd >= 0) 3900 if (fs_fd >= 0)
3089 infy_add (EV_A_ w); 3901 infy_add (EV_A_ w);
3090 else 3902 else
3091#endif 3903#endif
3904 {
3092 ev_timer_again (EV_A_ &w->timer); 3905 ev_timer_again (EV_A_ &w->timer);
3906 ev_unref (EV_A);
3907 }
3093 3908
3094 ev_start (EV_A_ (W)w, 1); 3909 ev_start (EV_A_ (W)w, 1);
3095 3910
3096 EV_FREQUENT_CHECK; 3911 EV_FREQUENT_CHECK;
3097} 3912}
3098 3913
3099void 3914void
3100ev_stat_stop (EV_P_ ev_stat *w) 3915ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3101{ 3916{
3102 clear_pending (EV_A_ (W)w); 3917 clear_pending (EV_A_ (W)w);
3103 if (expect_false (!ev_is_active (w))) 3918 if (expect_false (!ev_is_active (w)))
3104 return; 3919 return;
3105 3920
3106 EV_FREQUENT_CHECK; 3921 EV_FREQUENT_CHECK;
3107 3922
3108#if EV_USE_INOTIFY 3923#if EV_USE_INOTIFY
3109 infy_del (EV_A_ w); 3924 infy_del (EV_A_ w);
3110#endif 3925#endif
3926
3927 if (ev_is_active (&w->timer))
3928 {
3929 ev_ref (EV_A);
3111 ev_timer_stop (EV_A_ &w->timer); 3930 ev_timer_stop (EV_A_ &w->timer);
3931 }
3112 3932
3113 ev_stop (EV_A_ (W)w); 3933 ev_stop (EV_A_ (W)w);
3114 3934
3115 EV_FREQUENT_CHECK; 3935 EV_FREQUENT_CHECK;
3116} 3936}
3117#endif 3937#endif
3118 3938
3119#if EV_IDLE_ENABLE 3939#if EV_IDLE_ENABLE
3120void 3940void
3121ev_idle_start (EV_P_ ev_idle *w) 3941ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3122{ 3942{
3123 if (expect_false (ev_is_active (w))) 3943 if (expect_false (ev_is_active (w)))
3124 return; 3944 return;
3125 3945
3126 pri_adjust (EV_A_ (W)w); 3946 pri_adjust (EV_A_ (W)w);
… …
3139 3959
3140 EV_FREQUENT_CHECK; 3960 EV_FREQUENT_CHECK;
3141} 3961}
3142 3962
3143void 3963void
3144ev_idle_stop (EV_P_ ev_idle *w) 3964ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3145{ 3965{
3146 clear_pending (EV_A_ (W)w); 3966 clear_pending (EV_A_ (W)w);
3147 if (expect_false (!ev_is_active (w))) 3967 if (expect_false (!ev_is_active (w)))
3148 return; 3968 return;
3149 3969
… …
3161 3981
3162 EV_FREQUENT_CHECK; 3982 EV_FREQUENT_CHECK;
3163} 3983}
3164#endif 3984#endif
3165 3985
3986#if EV_PREPARE_ENABLE
3166void 3987void
3167ev_prepare_start (EV_P_ ev_prepare *w) 3988ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3168{ 3989{
3169 if (expect_false (ev_is_active (w))) 3990 if (expect_false (ev_is_active (w)))
3170 return; 3991 return;
3171 3992
3172 EV_FREQUENT_CHECK; 3993 EV_FREQUENT_CHECK;
… …
3177 3998
3178 EV_FREQUENT_CHECK; 3999 EV_FREQUENT_CHECK;
3179} 4000}
3180 4001
3181void 4002void
3182ev_prepare_stop (EV_P_ ev_prepare *w) 4003ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3183{ 4004{
3184 clear_pending (EV_A_ (W)w); 4005 clear_pending (EV_A_ (W)w);
3185 if (expect_false (!ev_is_active (w))) 4006 if (expect_false (!ev_is_active (w)))
3186 return; 4007 return;
3187 4008
… …
3196 4017
3197 ev_stop (EV_A_ (W)w); 4018 ev_stop (EV_A_ (W)w);
3198 4019
3199 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
3200} 4021}
4022#endif
3201 4023
4024#if EV_CHECK_ENABLE
3202void 4025void
3203ev_check_start (EV_P_ ev_check *w) 4026ev_check_start (EV_P_ ev_check *w) EV_THROW
3204{ 4027{
3205 if (expect_false (ev_is_active (w))) 4028 if (expect_false (ev_is_active (w)))
3206 return; 4029 return;
3207 4030
3208 EV_FREQUENT_CHECK; 4031 EV_FREQUENT_CHECK;
… …
3213 4036
3214 EV_FREQUENT_CHECK; 4037 EV_FREQUENT_CHECK;
3215} 4038}
3216 4039
3217void 4040void
3218ev_check_stop (EV_P_ ev_check *w) 4041ev_check_stop (EV_P_ ev_check *w) EV_THROW
3219{ 4042{
3220 clear_pending (EV_A_ (W)w); 4043 clear_pending (EV_A_ (W)w);
3221 if (expect_false (!ev_is_active (w))) 4044 if (expect_false (!ev_is_active (w)))
3222 return; 4045 return;
3223 4046
… …
3232 4055
3233 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
3234 4057
3235 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
3236} 4059}
4060#endif
3237 4061
3238#if EV_EMBED_ENABLE 4062#if EV_EMBED_ENABLE
3239void noinline 4063void noinline
3240ev_embed_sweep (EV_P_ ev_embed *w) 4064ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3241{ 4065{
3242 ev_loop (w->other, EVLOOP_NONBLOCK); 4066 ev_run (w->other, EVRUN_NOWAIT);
3243} 4067}
3244 4068
3245static void 4069static void
3246embed_io_cb (EV_P_ ev_io *io, int revents) 4070embed_io_cb (EV_P_ ev_io *io, int revents)
3247{ 4071{
3248 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4072 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3249 4073
3250 if (ev_cb (w)) 4074 if (ev_cb (w))
3251 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4075 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3252 else 4076 else
3253 ev_loop (w->other, EVLOOP_NONBLOCK); 4077 ev_run (w->other, EVRUN_NOWAIT);
3254} 4078}
3255 4079
3256static void 4080static void
3257embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4081embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3258{ 4082{
… …
3262 EV_P = w->other; 4086 EV_P = w->other;
3263 4087
3264 while (fdchangecnt) 4088 while (fdchangecnt)
3265 { 4089 {
3266 fd_reify (EV_A); 4090 fd_reify (EV_A);
3267 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4091 ev_run (EV_A_ EVRUN_NOWAIT);
3268 } 4092 }
3269 } 4093 }
3270} 4094}
3271 4095
3272static void 4096static void
… …
3278 4102
3279 { 4103 {
3280 EV_P = w->other; 4104 EV_P = w->other;
3281 4105
3282 ev_loop_fork (EV_A); 4106 ev_loop_fork (EV_A);
3283 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4107 ev_run (EV_A_ EVRUN_NOWAIT);
3284 } 4108 }
3285 4109
3286 ev_embed_start (EV_A_ w); 4110 ev_embed_start (EV_A_ w);
3287} 4111}
3288 4112
… …
3293 ev_idle_stop (EV_A_ idle); 4117 ev_idle_stop (EV_A_ idle);
3294} 4118}
3295#endif 4119#endif
3296 4120
3297void 4121void
3298ev_embed_start (EV_P_ ev_embed *w) 4122ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3299{ 4123{
3300 if (expect_false (ev_is_active (w))) 4124 if (expect_false (ev_is_active (w)))
3301 return; 4125 return;
3302 4126
3303 { 4127 {
… …
3324 4148
3325 EV_FREQUENT_CHECK; 4149 EV_FREQUENT_CHECK;
3326} 4150}
3327 4151
3328void 4152void
3329ev_embed_stop (EV_P_ ev_embed *w) 4153ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3330{ 4154{
3331 clear_pending (EV_A_ (W)w); 4155 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 4156 if (expect_false (!ev_is_active (w)))
3333 return; 4157 return;
3334 4158
… …
3336 4160
3337 ev_io_stop (EV_A_ &w->io); 4161 ev_io_stop (EV_A_ &w->io);
3338 ev_prepare_stop (EV_A_ &w->prepare); 4162 ev_prepare_stop (EV_A_ &w->prepare);
3339 ev_fork_stop (EV_A_ &w->fork); 4163 ev_fork_stop (EV_A_ &w->fork);
3340 4164
4165 ev_stop (EV_A_ (W)w);
4166
3341 EV_FREQUENT_CHECK; 4167 EV_FREQUENT_CHECK;
3342} 4168}
3343#endif 4169#endif
3344 4170
3345#if EV_FORK_ENABLE 4171#if EV_FORK_ENABLE
3346void 4172void
3347ev_fork_start (EV_P_ ev_fork *w) 4173ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3348{ 4174{
3349 if (expect_false (ev_is_active (w))) 4175 if (expect_false (ev_is_active (w)))
3350 return; 4176 return;
3351 4177
3352 EV_FREQUENT_CHECK; 4178 EV_FREQUENT_CHECK;
… …
3357 4183
3358 EV_FREQUENT_CHECK; 4184 EV_FREQUENT_CHECK;
3359} 4185}
3360 4186
3361void 4187void
3362ev_fork_stop (EV_P_ ev_fork *w) 4188ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3363{ 4189{
3364 clear_pending (EV_A_ (W)w); 4190 clear_pending (EV_A_ (W)w);
3365 if (expect_false (!ev_is_active (w))) 4191 if (expect_false (!ev_is_active (w)))
3366 return; 4192 return;
3367 4193
… …
3378 4204
3379 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
3380} 4206}
3381#endif 4207#endif
3382 4208
4209#if EV_CLEANUP_ENABLE
4210void
4211ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4212{
4213 if (expect_false (ev_is_active (w)))
4214 return;
4215
4216 EV_FREQUENT_CHECK;
4217
4218 ev_start (EV_A_ (W)w, ++cleanupcnt);
4219 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4220 cleanups [cleanupcnt - 1] = w;
4221
4222 /* cleanup watchers should never keep a refcount on the loop */
4223 ev_unref (EV_A);
4224 EV_FREQUENT_CHECK;
4225}
4226
4227void
4228ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4229{
4230 clear_pending (EV_A_ (W)w);
4231 if (expect_false (!ev_is_active (w)))
4232 return;
4233
4234 EV_FREQUENT_CHECK;
4235 ev_ref (EV_A);
4236
4237 {
4238 int active = ev_active (w);
4239
4240 cleanups [active - 1] = cleanups [--cleanupcnt];
4241 ev_active (cleanups [active - 1]) = active;
4242 }
4243
4244 ev_stop (EV_A_ (W)w);
4245
4246 EV_FREQUENT_CHECK;
4247}
4248#endif
4249
3383#if EV_ASYNC_ENABLE 4250#if EV_ASYNC_ENABLE
3384void 4251void
3385ev_async_start (EV_P_ ev_async *w) 4252ev_async_start (EV_P_ ev_async *w) EV_THROW
3386{ 4253{
3387 if (expect_false (ev_is_active (w))) 4254 if (expect_false (ev_is_active (w)))
3388 return; 4255 return;
4256
4257 w->sent = 0;
3389 4258
3390 evpipe_init (EV_A); 4259 evpipe_init (EV_A);
3391 4260
3392 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
3393 4262
… …
3397 4266
3398 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3399} 4268}
3400 4269
3401void 4270void
3402ev_async_stop (EV_P_ ev_async *w) 4271ev_async_stop (EV_P_ ev_async *w) EV_THROW
3403{ 4272{
3404 clear_pending (EV_A_ (W)w); 4273 clear_pending (EV_A_ (W)w);
3405 if (expect_false (!ev_is_active (w))) 4274 if (expect_false (!ev_is_active (w)))
3406 return; 4275 return;
3407 4276
… …
3418 4287
3419 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
3420} 4289}
3421 4290
3422void 4291void
3423ev_async_send (EV_P_ ev_async *w) 4292ev_async_send (EV_P_ ev_async *w) EV_THROW
3424{ 4293{
3425 w->sent = 1; 4294 w->sent = 1;
3426 evpipe_write (EV_A_ &async_pending); 4295 evpipe_write (EV_A_ &async_pending);
3427} 4296}
3428#endif 4297#endif
… …
3465 4334
3466 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4335 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3467} 4336}
3468 4337
3469void 4338void
3470ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4339ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3471{ 4340{
3472 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4341 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3473 4342
3474 if (expect_false (!once)) 4343 if (expect_false (!once))
3475 { 4344 {
3476 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4345 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3477 return; 4346 return;
3478 } 4347 }
3479 4348
3480 once->cb = cb; 4349 once->cb = cb;
3481 once->arg = arg; 4350 once->arg = arg;
… …
3496} 4365}
3497 4366
3498/*****************************************************************************/ 4367/*****************************************************************************/
3499 4368
3500#if EV_WALK_ENABLE 4369#if EV_WALK_ENABLE
3501void 4370void ecb_cold
3502ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3503{ 4372{
3504 int i, j; 4373 int i, j;
3505 ev_watcher_list *wl, *wn; 4374 ev_watcher_list *wl, *wn;
3506 4375
3507 if (types & (EV_IO | EV_EMBED)) 4376 if (types & (EV_IO | EV_EMBED))
… …
3550 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4419 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3551#endif 4420#endif
3552 4421
3553#if EV_IDLE_ENABLE 4422#if EV_IDLE_ENABLE
3554 if (types & EV_IDLE) 4423 if (types & EV_IDLE)
3555 for (j = NUMPRI; i--; ) 4424 for (j = NUMPRI; j--; )
3556 for (i = idlecnt [j]; i--; ) 4425 for (i = idlecnt [j]; i--; )
3557 cb (EV_A_ EV_IDLE, idles [j][i]); 4426 cb (EV_A_ EV_IDLE, idles [j][i]);
3558#endif 4427#endif
3559 4428
3560#if EV_FORK_ENABLE 4429#if EV_FORK_ENABLE
… …
3568 if (types & EV_ASYNC) 4437 if (types & EV_ASYNC)
3569 for (i = asynccnt; i--; ) 4438 for (i = asynccnt; i--; )
3570 cb (EV_A_ EV_ASYNC, asyncs [i]); 4439 cb (EV_A_ EV_ASYNC, asyncs [i]);
3571#endif 4440#endif
3572 4441
4442#if EV_PREPARE_ENABLE
3573 if (types & EV_PREPARE) 4443 if (types & EV_PREPARE)
3574 for (i = preparecnt; i--; ) 4444 for (i = preparecnt; i--; )
3575#if EV_EMBED_ENABLE 4445# if EV_EMBED_ENABLE
3576 if (ev_cb (prepares [i]) != embed_prepare_cb) 4446 if (ev_cb (prepares [i]) != embed_prepare_cb)
3577#endif 4447# endif
3578 cb (EV_A_ EV_PREPARE, prepares [i]); 4448 cb (EV_A_ EV_PREPARE, prepares [i]);
4449#endif
3579 4450
4451#if EV_CHECK_ENABLE
3580 if (types & EV_CHECK) 4452 if (types & EV_CHECK)
3581 for (i = checkcnt; i--; ) 4453 for (i = checkcnt; i--; )
3582 cb (EV_A_ EV_CHECK, checks [i]); 4454 cb (EV_A_ EV_CHECK, checks [i]);
4455#endif
3583 4456
4457#if EV_SIGNAL_ENABLE
3584 if (types & EV_SIGNAL) 4458 if (types & EV_SIGNAL)
3585 for (i = 0; i < EV_NSIG - 1; ++i) 4459 for (i = 0; i < EV_NSIG - 1; ++i)
3586 for (wl = signals [i].head; wl; ) 4460 for (wl = signals [i].head; wl; )
3587 { 4461 {
3588 wn = wl->next; 4462 wn = wl->next;
3589 cb (EV_A_ EV_SIGNAL, wl); 4463 cb (EV_A_ EV_SIGNAL, wl);
3590 wl = wn; 4464 wl = wn;
3591 } 4465 }
4466#endif
3592 4467
4468#if EV_CHILD_ENABLE
3593 if (types & EV_CHILD) 4469 if (types & EV_CHILD)
3594 for (i = EV_PID_HASHSIZE; i--; ) 4470 for (i = (EV_PID_HASHSIZE); i--; )
3595 for (wl = childs [i]; wl; ) 4471 for (wl = childs [i]; wl; )
3596 { 4472 {
3597 wn = wl->next; 4473 wn = wl->next;
3598 cb (EV_A_ EV_CHILD, wl); 4474 cb (EV_A_ EV_CHILD, wl);
3599 wl = wn; 4475 wl = wn;
3600 } 4476 }
4477#endif
3601/* EV_STAT 0x00001000 /* stat data changed */ 4478/* EV_STAT 0x00001000 /* stat data changed */
3602/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4479/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3603} 4480}
3604#endif 4481#endif
3605 4482
3606#if EV_MULTIPLICITY 4483#if EV_MULTIPLICITY
3607 #include "ev_wrap.h" 4484 #include "ev_wrap.h"
3608#endif 4485#endif
3609 4486
3610#ifdef __cplusplus
3611}
3612#endif
3613

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