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Comparing libev/ev.c (file contents):
Revision 1.311 by root, Wed Jul 29 09:36:05 2009 UTC vs.
Revision 1.425 by root, Sun May 6 13:09:35 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
335# include <syscall.h> 364# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 365# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 367# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 368# define EV_USE_MONOTONIC 1
340# else 369# else
… …
343# endif 372# endif
344#endif 373#endif
345 374
346/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 375/* this block fixes any misconfiguration where we know we run into trouble otherwise */
347 376
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
348#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
349# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
351#endif 386#endif
352 387
… …
359# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
361#endif 396#endif
362 397
363#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 401# include <sys/select.h>
366# endif 402# endif
367#endif 403#endif
368 404
369#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 406# include <sys/statfs.h>
372# include <sys/inotify.h> 407# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
392# define EFD_CLOEXEC O_CLOEXEC 427# define EFD_CLOEXEC O_CLOEXEC
393# else 428# else
394# define EFD_CLOEXEC 02000000 429# define EFD_CLOEXEC 02000000
395# endif 430# endif
396# endif 431# endif
397# ifdef __cplusplus 432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
398extern "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
399# endif 440# endif
400int eventfd (unsigned int initval, int flags); 441# ifndef SFD_CLOEXEC
401# ifdef __cplusplus 442# ifdef O_CLOEXEC
402} 443# define SFD_CLOEXEC O_CLOEXEC
444# else
445# define SFD_CLOEXEC 02000000
446# endif
403# endif 447# endif
404#endif 448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
405 449
406#if EV_USE_SIGNALFD 450struct signalfd_siginfo
407# include <sys/signalfd.h> 451{
452 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)];
454};
408#endif 455#endif
409 456
410/**/ 457/**/
411 458
412#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
413# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
414#else 461#else
415# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
416#endif 463#endif
417 464
418/* 465/*
419 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
420 * It is added to ev_rt_now when scheduling periodics
421 * to ensure progress, time-wise, even when rounding
422 * errors are against us.
423 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
424 * Better solutions welcome.
425 */ 468 */
426#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 */
427 471
428#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) */
429#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) */
430/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
431 474
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;
432#if __GNUC__ >= 4 519 #if __GNUC__
433# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
434# 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
435#else 526#else
436# define expect(expr,value) (expr) 527 #include <inttypes.h>
437# define noinline
438# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
439# define inline
440# 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)))
441#endif 542 #endif
543#endif
442 544
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. */
443#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
444#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
445#define inline_size static inline 960#define inline_size ecb_inline
446 961
447#if EV_MINIMAL 962#if EV_FEATURE_CODE
963# define inline_speed ecb_inline
964#else
448# define inline_speed static noinline 965# define inline_speed static noinline
449#else
450# define inline_speed static inline
451#endif 966#endif
452 967
453#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
454 969
455#if EV_MINPRI == EV_MAXPRI 970#if EV_MINPRI == EV_MAXPRI
… …
468#define ev_active(w) ((W)(w))->active 983#define ev_active(w) ((W)(w))->active
469#define ev_at(w) ((WT)(w))->at 984#define ev_at(w) ((WT)(w))->at
470 985
471#if EV_USE_REALTIME 986#if EV_USE_REALTIME
472/* 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 */
473/* giving it a reasonably high chance of working on typical architetcures */ 988/* giving it a reasonably high chance of working on typical architectures */
474static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 989static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
475#endif 990#endif
476 991
477#if EV_USE_MONOTONIC 992#if EV_USE_MONOTONIC
478static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 993static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
479#endif 994#endif
480 995
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
481#ifdef _WIN32 1006#ifdef _WIN32
482# include "ev_win32.c" 1007# include "ev_win32.c"
483#endif 1008#endif
484 1009
485/*****************************************************************************/ 1010/*****************************************************************************/
486 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
487static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg) EV_THROW;
488 1111
489void 1112void ecb_cold
490ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
491{ 1114{
492 syserr_cb = cb; 1115 syserr_cb = cb;
493} 1116}
494 1117
495static void noinline 1118static void noinline ecb_cold
496ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
497{ 1120{
498 if (!msg) 1121 if (!msg)
499 msg = "(libev) system error"; 1122 msg = "(libev) system error";
500 1123
501 if (syserr_cb) 1124 if (syserr_cb)
502 syserr_cb (msg); 1125 syserr_cb (msg);
503 else 1126 else
504 { 1127 {
1128#if EV_AVOID_STDIO
1129 ev_printerr (msg);
1130 ev_printerr (": ");
1131 ev_printerr (strerror (errno));
1132 ev_printerr ("\n");
1133#else
505 perror (msg); 1134 perror (msg);
1135#endif
506 abort (); 1136 abort ();
507 } 1137 }
508} 1138}
509 1139
510static void * 1140static void *
511ev_realloc_emul (void *ptr, long size) 1141ev_realloc_emul (void *ptr, long size)
512{ 1142{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
513 /* some systems, notably openbsd and darwin, fail to properly 1146 /* some systems, notably openbsd and darwin, fail to properly
514 * 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
515 * the single unix specification, so work around them here. 1148 * the single unix specification, so work around them here.
516 */ 1149 */
517 1150
518 if (size) 1151 if (size)
519 return realloc (ptr, size); 1152 return realloc (ptr, size);
520 1153
521 free (ptr); 1154 free (ptr);
522 return 0; 1155 return 0;
1156#endif
523} 1157}
524 1158
525static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
526 1160
527void 1161void ecb_cold
528ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
529{ 1163{
530 alloc = cb; 1164 alloc = cb;
531} 1165}
532 1166
533inline_speed void * 1167inline_speed void *
… …
535{ 1169{
536 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
537 1171
538 if (!ptr && size) 1172 if (!ptr && size)
539 { 1173 {
1174#if EV_AVOID_STDIO
1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1176#else
540 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1178#endif
541 abort (); 1179 abort ();
542 } 1180 }
543 1181
544 return ptr; 1182 return ptr;
545} 1183}
… …
561 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 */
562 unsigned char unused; 1200 unsigned char unused;
563#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
564 unsigned int egen; /* generation counter to counter epoll bugs */ 1202 unsigned int egen; /* generation counter to counter epoll bugs */
565#endif 1203#endif
566#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
567 SOCKET handle; 1205 SOCKET handle;
1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
568#endif 1209#endif
569} ANFD; 1210} ANFD;
570 1211
571/* stores the pending event set for a given watcher */ 1212/* stores the pending event set for a given watcher */
572typedef struct 1213typedef struct
… …
614 #undef VAR 1255 #undef VAR
615 }; 1256 };
616 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
617 1258
618 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
619 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 */
620 1261
621#else 1262#else
622 1263
623 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 */
624 #define VAR(name,decl) static decl; 1265 #define VAR(name,decl) static decl;
625 #include "ev_vars.h" 1266 #include "ev_vars.h"
626 #undef VAR 1267 #undef VAR
627 1268
628 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
629 1270
630#endif 1271#endif
631 1272
632#if EV_MINIMAL < 2 1273#if EV_FEATURE_API
633# 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)
634# 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)
635# define EV_INVOKE_PENDING invoke_cb (EV_A) 1276# define EV_INVOKE_PENDING invoke_cb (EV_A)
636#else 1277#else
637# define EV_RELEASE_CB (void)0 1278# define EV_RELEASE_CB (void)0
638# define EV_ACQUIRE_CB (void)0 1279# define EV_ACQUIRE_CB (void)0
639# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
640#endif 1281#endif
641 1282
642#define EVUNLOOP_RECURSE 0x80 1283#define EVBREAK_RECURSE 0x80
643 1284
644/*****************************************************************************/ 1285/*****************************************************************************/
645 1286
646#ifndef EV_HAVE_EV_TIME 1287#ifndef EV_HAVE_EV_TIME
647ev_tstamp 1288ev_tstamp
648ev_time (void) 1289ev_time (void) EV_THROW
649{ 1290{
650#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
651 if (expect_true (have_realtime)) 1292 if (expect_true (have_realtime))
652 { 1293 {
653 struct timespec ts; 1294 struct timespec ts;
… …
677 return ev_time (); 1318 return ev_time ();
678} 1319}
679 1320
680#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
681ev_tstamp 1322ev_tstamp
682ev_now (EV_P) 1323ev_now (EV_P) EV_THROW
683{ 1324{
684 return ev_rt_now; 1325 return ev_rt_now;
685} 1326}
686#endif 1327#endif
687 1328
688void 1329void
689ev_sleep (ev_tstamp delay) 1330ev_sleep (ev_tstamp delay) EV_THROW
690{ 1331{
691 if (delay > 0.) 1332 if (delay > 0.)
692 { 1333 {
693#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
694 struct timespec ts; 1335 struct timespec ts;
695 1336
696 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
697 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
698
699 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
700#elif defined(_WIN32) 1339#elif defined _WIN32
701 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
702#else 1341#else
703 struct timeval tv; 1342 struct timeval tv;
704 1343
705 tv.tv_sec = (time_t)delay;
706 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
707
708 /* 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 */
709 /* something not guaranteed by newer posix versions, but guaranteed */ 1345 /* something not guaranteed by newer posix versions, but guaranteed */
710 /* by older ones */ 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
711 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
712#endif 1349#endif
713 } 1350 }
714} 1351}
715 1352
716/*****************************************************************************/ 1353/*****************************************************************************/
717 1354
718#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 */
719 1356
720/* find a suitable new size for the given array, */ 1357/* find a suitable new size for the given array, */
721/* hopefully by rounding to a ncie-to-malloc size */ 1358/* hopefully by rounding to a nice-to-malloc size */
722inline_size int 1359inline_size int
723array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
724{ 1361{
725 int ncur = cur + 1; 1362 int ncur = cur + 1;
726 1363
727 do 1364 do
728 ncur <<= 1; 1365 ncur <<= 1;
729 while (cnt > ncur); 1366 while (cnt > ncur);
730 1367
731 /* 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 */
732 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
733 { 1370 {
734 ncur *= elem; 1371 ncur *= elem;
735 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);
736 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
738 } 1375 }
739 1376
740 return ncur; 1377 return ncur;
741} 1378}
742 1379
743static noinline void * 1380static void * noinline ecb_cold
744array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
745{ 1382{
746 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
747 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
748} 1385}
… …
751 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
752 1389
753#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
754 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
755 { \ 1392 { \
756 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
757 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
758 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
759 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
760 } 1397 }
761 1398
… …
779pendingcb (EV_P_ ev_prepare *w, int revents) 1416pendingcb (EV_P_ ev_prepare *w, int revents)
780{ 1417{
781} 1418}
782 1419
783void noinline 1420void noinline
784ev_feed_event (EV_P_ void *w, int revents) 1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW
785{ 1422{
786 W w_ = (W)w; 1423 W w_ = (W)w;
787 int pri = ABSPRI (w_); 1424 int pri = ABSPRI (w_);
788 1425
789 if (expect_false (w_->pending)) 1426 if (expect_false (w_->pending))
… …
793 w_->pending = ++pendingcnt [pri]; 1430 w_->pending = ++pendingcnt [pri];
794 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
795 pendings [pri][w_->pending - 1].w = w_; 1432 pendings [pri][w_->pending - 1].w = w_;
796 pendings [pri][w_->pending - 1].events = revents; 1433 pendings [pri][w_->pending - 1].events = revents;
797 } 1434 }
1435
1436 pendingpri = NUMPRI - 1;
798} 1437}
799 1438
800inline_speed void 1439inline_speed void
801feed_reverse (EV_P_ W w) 1440feed_reverse (EV_P_ W w)
802{ 1441{
… …
822} 1461}
823 1462
824/*****************************************************************************/ 1463/*****************************************************************************/
825 1464
826inline_speed void 1465inline_speed void
827fd_event_nc (EV_P_ int fd, int revents) 1466fd_event_nocheck (EV_P_ int fd, int revents)
828{ 1467{
829 ANFD *anfd = anfds + fd; 1468 ANFD *anfd = anfds + fd;
830 ev_io *w; 1469 ev_io *w;
831 1470
832 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1471 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
844fd_event (EV_P_ int fd, int revents) 1483fd_event (EV_P_ int fd, int revents)
845{ 1484{
846 ANFD *anfd = anfds + fd; 1485 ANFD *anfd = anfds + fd;
847 1486
848 if (expect_true (!anfd->reify)) 1487 if (expect_true (!anfd->reify))
849 fd_event_nc (EV_A_ fd, revents); 1488 fd_event_nocheck (EV_A_ fd, revents);
850} 1489}
851 1490
852void 1491void
853ev_feed_fd_event (EV_P_ int fd, int revents) 1492ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
854{ 1493{
855 if (fd >= 0 && fd < anfdmax) 1494 if (fd >= 0 && fd < anfdmax)
856 fd_event_nc (EV_A_ fd, revents); 1495 fd_event_nocheck (EV_A_ fd, revents);
857} 1496}
858 1497
859/* make sure the external fd watch events are in-sync */ 1498/* make sure the external fd watch events are in-sync */
860/* with the kernel/libev internal state */ 1499/* with the kernel/libev internal state */
861inline_size void 1500inline_size void
862fd_reify (EV_P) 1501fd_reify (EV_P)
863{ 1502{
864 int i; 1503 int i;
865 1504
1505#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1506 for (i = 0; i < fdchangecnt; ++i)
1507 {
1508 int fd = fdchanges [i];
1509 ANFD *anfd = anfds + fd;
1510
1511 if (anfd->reify & EV__IOFDSET && anfd->head)
1512 {
1513 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1514
1515 if (handle != anfd->handle)
1516 {
1517 unsigned long arg;
1518
1519 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1520
1521 /* handle changed, but fd didn't - we need to do it in two steps */
1522 backend_modify (EV_A_ fd, anfd->events, 0);
1523 anfd->events = 0;
1524 anfd->handle = handle;
1525 }
1526 }
1527 }
1528#endif
1529
866 for (i = 0; i < fdchangecnt; ++i) 1530 for (i = 0; i < fdchangecnt; ++i)
867 { 1531 {
868 int fd = fdchanges [i]; 1532 int fd = fdchanges [i];
869 ANFD *anfd = anfds + fd; 1533 ANFD *anfd = anfds + fd;
870 ev_io *w; 1534 ev_io *w;
871 1535
872 unsigned char events = 0; 1536 unsigned char o_events = anfd->events;
1537 unsigned char o_reify = anfd->reify;
873 1538
874 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1539 anfd->reify = 0;
875 events |= (unsigned char)w->events;
876 1540
877#if EV_SELECT_IS_WINSOCKET 1541 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
878 if (events)
879 { 1542 {
880 unsigned long arg; 1543 anfd->events = 0;
881 #ifdef EV_FD_TO_WIN32_HANDLE 1544
882 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1545 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
883 #else 1546 anfd->events |= (unsigned char)w->events;
884 anfd->handle = _get_osfhandle (fd); 1547
885 #endif 1548 if (o_events != anfd->events)
886 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1549 o_reify = EV__IOFDSET; /* actually |= */
887 } 1550 }
888#endif
889 1551
890 { 1552 if (o_reify & EV__IOFDSET)
891 unsigned char o_events = anfd->events;
892 unsigned char o_reify = anfd->reify;
893
894 anfd->reify = 0;
895 anfd->events = events;
896
897 if (o_events != events || o_reify & EV__IOFDSET)
898 backend_modify (EV_A_ fd, o_events, events); 1553 backend_modify (EV_A_ fd, o_events, anfd->events);
899 }
900 } 1554 }
901 1555
902 fdchangecnt = 0; 1556 fdchangecnt = 0;
903} 1557}
904 1558
… …
916 fdchanges [fdchangecnt - 1] = fd; 1570 fdchanges [fdchangecnt - 1] = fd;
917 } 1571 }
918} 1572}
919 1573
920/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1574/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
921inline_speed void 1575inline_speed void ecb_cold
922fd_kill (EV_P_ int fd) 1576fd_kill (EV_P_ int fd)
923{ 1577{
924 ev_io *w; 1578 ev_io *w;
925 1579
926 while ((w = (ev_io *)anfds [fd].head)) 1580 while ((w = (ev_io *)anfds [fd].head))
… …
928 ev_io_stop (EV_A_ w); 1582 ev_io_stop (EV_A_ w);
929 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
930 } 1584 }
931} 1585}
932 1586
933/* check whether the given fd is atcually valid, for error recovery */ 1587/* check whether the given fd is actually valid, for error recovery */
934inline_size int 1588inline_size int ecb_cold
935fd_valid (int fd) 1589fd_valid (int fd)
936{ 1590{
937#ifdef _WIN32 1591#ifdef _WIN32
938 return _get_osfhandle (fd) != -1; 1592 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
939#else 1593#else
940 return fcntl (fd, F_GETFD) != -1; 1594 return fcntl (fd, F_GETFD) != -1;
941#endif 1595#endif
942} 1596}
943 1597
944/* called on EBADF to verify fds */ 1598/* called on EBADF to verify fds */
945static void noinline 1599static void noinline ecb_cold
946fd_ebadf (EV_P) 1600fd_ebadf (EV_P)
947{ 1601{
948 int fd; 1602 int fd;
949 1603
950 for (fd = 0; fd < anfdmax; ++fd) 1604 for (fd = 0; fd < anfdmax; ++fd)
… …
952 if (!fd_valid (fd) && errno == EBADF) 1606 if (!fd_valid (fd) && errno == EBADF)
953 fd_kill (EV_A_ fd); 1607 fd_kill (EV_A_ fd);
954} 1608}
955 1609
956/* called on ENOMEM in select/poll to kill some fds and retry */ 1610/* called on ENOMEM in select/poll to kill some fds and retry */
957static void noinline 1611static void noinline ecb_cold
958fd_enomem (EV_P) 1612fd_enomem (EV_P)
959{ 1613{
960 int fd; 1614 int fd;
961 1615
962 for (fd = anfdmax; fd--; ) 1616 for (fd = anfdmax; fd--; )
… …
980 anfds [fd].emask = 0; 1634 anfds [fd].emask = 0;
981 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1635 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
982 } 1636 }
983} 1637}
984 1638
1639/* used to prepare libev internal fd's */
1640/* this is not fork-safe */
1641inline_speed void
1642fd_intern (int fd)
1643{
1644#ifdef _WIN32
1645 unsigned long arg = 1;
1646 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1647#else
1648 fcntl (fd, F_SETFD, FD_CLOEXEC);
1649 fcntl (fd, F_SETFL, O_NONBLOCK);
1650#endif
1651}
1652
985/*****************************************************************************/ 1653/*****************************************************************************/
986 1654
987/* 1655/*
988 * the heap functions want a real array index. array index 0 uis guaranteed to not 1656 * the heap functions want a real array index. array index 0 is guaranteed to not
989 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1657 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
990 * the branching factor of the d-tree. 1658 * the branching factor of the d-tree.
991 */ 1659 */
992 1660
993/* 1661/*
… …
1141 1809
1142static ANSIG signals [EV_NSIG - 1]; 1810static ANSIG signals [EV_NSIG - 1];
1143 1811
1144/*****************************************************************************/ 1812/*****************************************************************************/
1145 1813
1146/* used to prepare libev internal fd's */ 1814#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1147/* this is not fork-safe */
1148inline_speed void
1149fd_intern (int fd)
1150{
1151#ifdef _WIN32
1152 unsigned long arg = 1;
1153 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1154#else
1155 fcntl (fd, F_SETFD, FD_CLOEXEC);
1156 fcntl (fd, F_SETFL, O_NONBLOCK);
1157#endif
1158}
1159 1815
1160static void noinline 1816static void noinline ecb_cold
1161evpipe_init (EV_P) 1817evpipe_init (EV_P)
1162{ 1818{
1163 if (!ev_is_active (&pipe_w)) 1819 if (!ev_is_active (&pipe_w))
1164 { 1820 {
1165#if EV_USE_EVENTFD 1821# if EV_USE_EVENTFD
1166 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1822 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1167 if (evfd < 0 && errno == EINVAL) 1823 if (evfd < 0 && errno == EINVAL)
1168 evfd = eventfd (0, 0); 1824 evfd = eventfd (0, 0);
1169 1825
1170 if (evfd >= 0) 1826 if (evfd >= 0)
… …
1172 evpipe [0] = -1; 1828 evpipe [0] = -1;
1173 fd_intern (evfd); /* doing it twice doesn't hurt */ 1829 fd_intern (evfd); /* doing it twice doesn't hurt */
1174 ev_io_set (&pipe_w, evfd, EV_READ); 1830 ev_io_set (&pipe_w, evfd, EV_READ);
1175 } 1831 }
1176 else 1832 else
1177#endif 1833# endif
1178 { 1834 {
1179 while (pipe (evpipe)) 1835 while (pipe (evpipe))
1180 ev_syserr ("(libev) error creating signal/async pipe"); 1836 ev_syserr ("(libev) error creating signal/async pipe");
1181 1837
1182 fd_intern (evpipe [0]); 1838 fd_intern (evpipe [0]);
… …
1187 ev_io_start (EV_A_ &pipe_w); 1843 ev_io_start (EV_A_ &pipe_w);
1188 ev_unref (EV_A); /* watcher should not keep loop alive */ 1844 ev_unref (EV_A); /* watcher should not keep loop alive */
1189 } 1845 }
1190} 1846}
1191 1847
1192inline_size void 1848inline_speed void
1193evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1849evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1194{ 1850{
1195 if (!*flag) 1851 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1852
1853 if (expect_true (*flag))
1854 return;
1855
1856 *flag = 1;
1857
1858 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1859
1860 pipe_write_skipped = 1;
1861
1862 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1863
1864 if (pipe_write_wanted)
1196 { 1865 {
1866 int old_errno;
1867
1868 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1869
1197 int old_errno = errno; /* save errno because write might clobber it */ 1870 old_errno = errno; /* save errno because write will clobber it */
1198
1199 *flag = 1;
1200 1871
1201#if EV_USE_EVENTFD 1872#if EV_USE_EVENTFD
1202 if (evfd >= 0) 1873 if (evfd >= 0)
1203 { 1874 {
1204 uint64_t counter = 1; 1875 uint64_t counter = 1;
1205 write (evfd, &counter, sizeof (uint64_t)); 1876 write (evfd, &counter, sizeof (uint64_t));
1206 } 1877 }
1207 else 1878 else
1208#endif 1879#endif
1880 {
1881 /* win32 people keep sending patches that change this write() to send() */
1882 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1883 /* so when you think this write should be a send instead, please find out */
1884 /* where your send() is from - it's definitely not the microsoft send, and */
1885 /* tell me. thank you. */
1886 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1887 /* check the ev documentation on how to use this flag */
1209 write (evpipe [1], &old_errno, 1); 1888 write (evpipe [1], &(evpipe [1]), 1);
1889 }
1210 1890
1211 errno = old_errno; 1891 errno = old_errno;
1212 } 1892 }
1213} 1893}
1214 1894
… …
1217static void 1897static void
1218pipecb (EV_P_ ev_io *iow, int revents) 1898pipecb (EV_P_ ev_io *iow, int revents)
1219{ 1899{
1220 int i; 1900 int i;
1221 1901
1902 if (revents & EV_READ)
1903 {
1222#if EV_USE_EVENTFD 1904#if EV_USE_EVENTFD
1223 if (evfd >= 0) 1905 if (evfd >= 0)
1224 { 1906 {
1225 uint64_t counter; 1907 uint64_t counter;
1226 read (evfd, &counter, sizeof (uint64_t)); 1908 read (evfd, &counter, sizeof (uint64_t));
1227 } 1909 }
1228 else 1910 else
1229#endif 1911#endif
1230 { 1912 {
1231 char dummy; 1913 char dummy;
1914 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1232 read (evpipe [0], &dummy, 1); 1915 read (evpipe [0], &dummy, 1);
1916 }
1233 } 1917 }
1234 1918
1919 pipe_write_skipped = 0;
1920
1921 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1922
1923#if EV_SIGNAL_ENABLE
1235 if (sig_pending) 1924 if (sig_pending)
1236 { 1925 {
1237 sig_pending = 0; 1926 sig_pending = 0;
1927
1928 ECB_MEMORY_FENCE_RELEASE;
1238 1929
1239 for (i = EV_NSIG - 1; i--; ) 1930 for (i = EV_NSIG - 1; i--; )
1240 if (expect_false (signals [i].pending)) 1931 if (expect_false (signals [i].pending))
1241 ev_feed_signal_event (EV_A_ i + 1); 1932 ev_feed_signal_event (EV_A_ i + 1);
1242 } 1933 }
1934#endif
1243 1935
1244#if EV_ASYNC_ENABLE 1936#if EV_ASYNC_ENABLE
1245 if (async_pending) 1937 if (async_pending)
1246 { 1938 {
1247 async_pending = 0; 1939 async_pending = 0;
1940
1941 ECB_MEMORY_FENCE_RELEASE;
1248 1942
1249 for (i = asynccnt; i--; ) 1943 for (i = asynccnt; i--; )
1250 if (asyncs [i]->sent) 1944 if (asyncs [i]->sent)
1251 { 1945 {
1252 asyncs [i]->sent = 0; 1946 asyncs [i]->sent = 0;
… …
1256#endif 1950#endif
1257} 1951}
1258 1952
1259/*****************************************************************************/ 1953/*****************************************************************************/
1260 1954
1955void
1956ev_feed_signal (int signum) EV_THROW
1957{
1958#if EV_MULTIPLICITY
1959 EV_P = signals [signum - 1].loop;
1960
1961 if (!EV_A)
1962 return;
1963#endif
1964
1965 if (!ev_active (&pipe_w))
1966 return;
1967
1968 signals [signum - 1].pending = 1;
1969 evpipe_write (EV_A_ &sig_pending);
1970}
1971
1261static void 1972static void
1262ev_sighandler (int signum) 1973ev_sighandler (int signum)
1263{ 1974{
1264#if EV_MULTIPLICITY
1265 EV_P = signals [signum - 1].loop;
1266#endif
1267
1268#if _WIN32 1975#ifdef _WIN32
1269 signal (signum, ev_sighandler); 1976 signal (signum, ev_sighandler);
1270#endif 1977#endif
1271 1978
1272 signals [signum - 1].pending = 1; 1979 ev_feed_signal (signum);
1273 evpipe_write (EV_A_ &sig_pending);
1274} 1980}
1275 1981
1276void noinline 1982void noinline
1277ev_feed_signal_event (EV_P_ int signum) 1983ev_feed_signal_event (EV_P_ int signum) EV_THROW
1278{ 1984{
1279 WL w; 1985 WL w;
1280 1986
1281 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1987 if (expect_false (signum <= 0 || signum > EV_NSIG))
1282 return; 1988 return;
… …
1315 break; 2021 break;
1316 } 2022 }
1317} 2023}
1318#endif 2024#endif
1319 2025
2026#endif
2027
1320/*****************************************************************************/ 2028/*****************************************************************************/
1321 2029
2030#if EV_CHILD_ENABLE
1322static WL childs [EV_PID_HASHSIZE]; 2031static WL childs [EV_PID_HASHSIZE];
1323
1324#ifndef _WIN32
1325 2032
1326static ev_signal childev; 2033static ev_signal childev;
1327 2034
1328#ifndef WIFCONTINUED 2035#ifndef WIFCONTINUED
1329# define WIFCONTINUED(status) 0 2036# define WIFCONTINUED(status) 0
… …
1334child_reap (EV_P_ int chain, int pid, int status) 2041child_reap (EV_P_ int chain, int pid, int status)
1335{ 2042{
1336 ev_child *w; 2043 ev_child *w;
1337 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2044 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1338 2045
1339 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2046 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1340 { 2047 {
1341 if ((w->pid == pid || !w->pid) 2048 if ((w->pid == pid || !w->pid)
1342 && (!traced || (w->flags & 1))) 2049 && (!traced || (w->flags & 1)))
1343 { 2050 {
1344 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2051 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1369 /* make sure we are called again until all children have been reaped */ 2076 /* make sure we are called again until all children have been reaped */
1370 /* we need to do it this way so that the callback gets called before we continue */ 2077 /* we need to do it this way so that the callback gets called before we continue */
1371 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2078 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1372 2079
1373 child_reap (EV_A_ pid, pid, status); 2080 child_reap (EV_A_ pid, pid, status);
1374 if (EV_PID_HASHSIZE > 1) 2081 if ((EV_PID_HASHSIZE) > 1)
1375 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2082 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1376} 2083}
1377 2084
1378#endif 2085#endif
1379 2086
1380/*****************************************************************************/ 2087/*****************************************************************************/
1381 2088
2089#if EV_USE_IOCP
2090# include "ev_iocp.c"
2091#endif
1382#if EV_USE_PORT 2092#if EV_USE_PORT
1383# include "ev_port.c" 2093# include "ev_port.c"
1384#endif 2094#endif
1385#if EV_USE_KQUEUE 2095#if EV_USE_KQUEUE
1386# include "ev_kqueue.c" 2096# include "ev_kqueue.c"
… …
1393#endif 2103#endif
1394#if EV_USE_SELECT 2104#if EV_USE_SELECT
1395# include "ev_select.c" 2105# include "ev_select.c"
1396#endif 2106#endif
1397 2107
1398int 2108int ecb_cold
1399ev_version_major (void) 2109ev_version_major (void) EV_THROW
1400{ 2110{
1401 return EV_VERSION_MAJOR; 2111 return EV_VERSION_MAJOR;
1402} 2112}
1403 2113
1404int 2114int ecb_cold
1405ev_version_minor (void) 2115ev_version_minor (void) EV_THROW
1406{ 2116{
1407 return EV_VERSION_MINOR; 2117 return EV_VERSION_MINOR;
1408} 2118}
1409 2119
1410/* return true if we are running with elevated privileges and should ignore env variables */ 2120/* return true if we are running with elevated privileges and should ignore env variables */
1411int inline_size 2121int inline_size ecb_cold
1412enable_secure (void) 2122enable_secure (void)
1413{ 2123{
1414#ifdef _WIN32 2124#ifdef _WIN32
1415 return 0; 2125 return 0;
1416#else 2126#else
1417 return getuid () != geteuid () 2127 return getuid () != geteuid ()
1418 || getgid () != getegid (); 2128 || getgid () != getegid ();
1419#endif 2129#endif
1420} 2130}
1421 2131
1422unsigned int 2132unsigned int ecb_cold
1423ev_supported_backends (void) 2133ev_supported_backends (void) EV_THROW
1424{ 2134{
1425 unsigned int flags = 0; 2135 unsigned int flags = 0;
1426 2136
1427 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2137 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1428 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2138 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1431 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2141 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1432 2142
1433 return flags; 2143 return flags;
1434} 2144}
1435 2145
1436unsigned int 2146unsigned int ecb_cold
1437ev_recommended_backends (void) 2147ev_recommended_backends (void) EV_THROW
1438{ 2148{
1439 unsigned int flags = ev_supported_backends (); 2149 unsigned int flags = ev_supported_backends ();
1440 2150
1441#ifndef __NetBSD__ 2151#ifndef __NetBSD__
1442 /* kqueue is borked on everything but netbsd apparently */ 2152 /* kqueue is borked on everything but netbsd apparently */
… …
1446#ifdef __APPLE__ 2156#ifdef __APPLE__
1447 /* only select works correctly on that "unix-certified" platform */ 2157 /* only select works correctly on that "unix-certified" platform */
1448 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2158 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1449 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2159 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1450#endif 2160#endif
2161#ifdef __FreeBSD__
2162 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2163#endif
1451 2164
1452 return flags; 2165 return flags;
1453} 2166}
1454 2167
2168unsigned int ecb_cold
2169ev_embeddable_backends (void) EV_THROW
2170{
2171 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2172
2173 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2174 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2175 flags &= ~EVBACKEND_EPOLL;
2176
2177 return flags;
2178}
2179
1455unsigned int 2180unsigned int
1456ev_embeddable_backends (void) 2181ev_backend (EV_P) EV_THROW
1457{ 2182{
1458 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2183 return backend;
1459
1460 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1461 /* please fix it and tell me how to detect the fix */
1462 flags &= ~EVBACKEND_EPOLL;
1463
1464 return flags;
1465} 2184}
1466 2185
2186#if EV_FEATURE_API
1467unsigned int 2187unsigned int
1468ev_backend (EV_P) 2188ev_iteration (EV_P) EV_THROW
1469{ 2189{
1470 return backend; 2190 return loop_count;
1471} 2191}
1472 2192
1473#if EV_MINIMAL < 2
1474unsigned int 2193unsigned int
1475ev_loop_count (EV_P) 2194ev_depth (EV_P) EV_THROW
1476{
1477 return loop_count;
1478}
1479
1480unsigned int
1481ev_loop_depth (EV_P)
1482{ 2195{
1483 return loop_depth; 2196 return loop_depth;
1484} 2197}
1485 2198
1486void 2199void
1487ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2200ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1488{ 2201{
1489 io_blocktime = interval; 2202 io_blocktime = interval;
1490} 2203}
1491 2204
1492void 2205void
1493ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2206ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1494{ 2207{
1495 timeout_blocktime = interval; 2208 timeout_blocktime = interval;
1496} 2209}
1497 2210
1498void 2211void
1499ev_set_userdata (EV_P_ void *data) 2212ev_set_userdata (EV_P_ void *data) EV_THROW
1500{ 2213{
1501 userdata = data; 2214 userdata = data;
1502} 2215}
1503 2216
1504void * 2217void *
1505ev_userdata (EV_P) 2218ev_userdata (EV_P) EV_THROW
1506{ 2219{
1507 return userdata; 2220 return userdata;
1508} 2221}
1509 2222
2223void
1510void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2224ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1511{ 2225{
1512 invoke_cb = invoke_pending_cb; 2226 invoke_cb = invoke_pending_cb;
1513} 2227}
1514 2228
2229void
1515void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2230ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1516{ 2231{
1517 release_cb = release; 2232 release_cb = release;
1518 acquire_cb = acquire; 2233 acquire_cb = acquire;
1519} 2234}
1520#endif 2235#endif
1521 2236
1522/* initialise a loop structure, must be zero-initialised */ 2237/* initialise a loop structure, must be zero-initialised */
1523static void noinline 2238static void noinline ecb_cold
1524loop_init (EV_P_ unsigned int flags) 2239loop_init (EV_P_ unsigned int flags) EV_THROW
1525{ 2240{
1526 if (!backend) 2241 if (!backend)
1527 { 2242 {
2243 origflags = flags;
2244
1528#if EV_USE_REALTIME 2245#if EV_USE_REALTIME
1529 if (!have_realtime) 2246 if (!have_realtime)
1530 { 2247 {
1531 struct timespec ts; 2248 struct timespec ts;
1532 2249
… …
1554 if (!(flags & EVFLAG_NOENV) 2271 if (!(flags & EVFLAG_NOENV)
1555 && !enable_secure () 2272 && !enable_secure ()
1556 && getenv ("LIBEV_FLAGS")) 2273 && getenv ("LIBEV_FLAGS"))
1557 flags = atoi (getenv ("LIBEV_FLAGS")); 2274 flags = atoi (getenv ("LIBEV_FLAGS"));
1558 2275
1559 ev_rt_now = ev_time (); 2276 ev_rt_now = ev_time ();
1560 mn_now = get_clock (); 2277 mn_now = get_clock ();
1561 now_floor = mn_now; 2278 now_floor = mn_now;
1562 rtmn_diff = ev_rt_now - mn_now; 2279 rtmn_diff = ev_rt_now - mn_now;
1563#if EV_MINIMAL < 2 2280#if EV_FEATURE_API
1564 invoke_cb = ev_invoke_pending; 2281 invoke_cb = ev_invoke_pending;
1565#endif 2282#endif
1566 2283
1567 io_blocktime = 0.; 2284 io_blocktime = 0.;
1568 timeout_blocktime = 0.; 2285 timeout_blocktime = 0.;
1569 backend = 0; 2286 backend = 0;
1570 backend_fd = -1; 2287 backend_fd = -1;
1571 sig_pending = 0; 2288 sig_pending = 0;
1572#if EV_ASYNC_ENABLE 2289#if EV_ASYNC_ENABLE
1573 async_pending = 0; 2290 async_pending = 0;
1574#endif 2291#endif
2292 pipe_write_skipped = 0;
2293 pipe_write_wanted = 0;
1575#if EV_USE_INOTIFY 2294#if EV_USE_INOTIFY
1576 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2295 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1577#endif 2296#endif
1578#if EV_USE_SIGNALFD 2297#if EV_USE_SIGNALFD
1579 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2298 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1580#endif 2299#endif
1581 2300
1582 if (!(flags & 0x0000ffffU)) 2301 if (!(flags & EVBACKEND_MASK))
1583 flags |= ev_recommended_backends (); 2302 flags |= ev_recommended_backends ();
1584 2303
2304#if EV_USE_IOCP
2305 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2306#endif
1585#if EV_USE_PORT 2307#if EV_USE_PORT
1586 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2308 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1587#endif 2309#endif
1588#if EV_USE_KQUEUE 2310#if EV_USE_KQUEUE
1589 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2311 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1598 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2320 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1599#endif 2321#endif
1600 2322
1601 ev_prepare_init (&pending_w, pendingcb); 2323 ev_prepare_init (&pending_w, pendingcb);
1602 2324
2325#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1603 ev_init (&pipe_w, pipecb); 2326 ev_init (&pipe_w, pipecb);
1604 ev_set_priority (&pipe_w, EV_MAXPRI); 2327 ev_set_priority (&pipe_w, EV_MAXPRI);
2328#endif
1605 } 2329 }
1606} 2330}
1607 2331
1608/* free up a loop structure */ 2332/* free up a loop structure */
1609static void noinline 2333void ecb_cold
1610loop_destroy (EV_P) 2334ev_loop_destroy (EV_P)
1611{ 2335{
1612 int i; 2336 int i;
2337
2338#if EV_MULTIPLICITY
2339 /* mimic free (0) */
2340 if (!EV_A)
2341 return;
2342#endif
2343
2344#if EV_CLEANUP_ENABLE
2345 /* queue cleanup watchers (and execute them) */
2346 if (expect_false (cleanupcnt))
2347 {
2348 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2349 EV_INVOKE_PENDING;
2350 }
2351#endif
2352
2353#if EV_CHILD_ENABLE
2354 if (ev_is_active (&childev))
2355 {
2356 ev_ref (EV_A); /* child watcher */
2357 ev_signal_stop (EV_A_ &childev);
2358 }
2359#endif
1613 2360
1614 if (ev_is_active (&pipe_w)) 2361 if (ev_is_active (&pipe_w))
1615 { 2362 {
1616 /*ev_ref (EV_A);*/ 2363 /*ev_ref (EV_A);*/
1617 /*ev_io_stop (EV_A_ &pipe_w);*/ 2364 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1621 close (evfd); 2368 close (evfd);
1622#endif 2369#endif
1623 2370
1624 if (evpipe [0] >= 0) 2371 if (evpipe [0] >= 0)
1625 { 2372 {
1626 close (evpipe [0]); 2373 EV_WIN32_CLOSE_FD (evpipe [0]);
1627 close (evpipe [1]); 2374 EV_WIN32_CLOSE_FD (evpipe [1]);
1628 } 2375 }
1629 } 2376 }
1630 2377
1631#if EV_USE_SIGNALFD 2378#if EV_USE_SIGNALFD
1632 if (ev_is_active (&sigfd_w)) 2379 if (ev_is_active (&sigfd_w))
1633 {
1634 /*ev_ref (EV_A);*/
1635 /*ev_io_stop (EV_A_ &sigfd_w);*/
1636
1637 close (sigfd); 2380 close (sigfd);
1638 }
1639#endif 2381#endif
1640 2382
1641#if EV_USE_INOTIFY 2383#if EV_USE_INOTIFY
1642 if (fs_fd >= 0) 2384 if (fs_fd >= 0)
1643 close (fs_fd); 2385 close (fs_fd);
1644#endif 2386#endif
1645 2387
1646 if (backend_fd >= 0) 2388 if (backend_fd >= 0)
1647 close (backend_fd); 2389 close (backend_fd);
1648 2390
2391#if EV_USE_IOCP
2392 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2393#endif
1649#if EV_USE_PORT 2394#if EV_USE_PORT
1650 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2395 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1651#endif 2396#endif
1652#if EV_USE_KQUEUE 2397#if EV_USE_KQUEUE
1653 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2398 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1680 array_free (periodic, EMPTY); 2425 array_free (periodic, EMPTY);
1681#endif 2426#endif
1682#if EV_FORK_ENABLE 2427#if EV_FORK_ENABLE
1683 array_free (fork, EMPTY); 2428 array_free (fork, EMPTY);
1684#endif 2429#endif
2430#if EV_CLEANUP_ENABLE
2431 array_free (cleanup, EMPTY);
2432#endif
1685 array_free (prepare, EMPTY); 2433 array_free (prepare, EMPTY);
1686 array_free (check, EMPTY); 2434 array_free (check, EMPTY);
1687#if EV_ASYNC_ENABLE 2435#if EV_ASYNC_ENABLE
1688 array_free (async, EMPTY); 2436 array_free (async, EMPTY);
1689#endif 2437#endif
1690 2438
1691 backend = 0; 2439 backend = 0;
2440
2441#if EV_MULTIPLICITY
2442 if (ev_is_default_loop (EV_A))
2443#endif
2444 ev_default_loop_ptr = 0;
2445#if EV_MULTIPLICITY
2446 else
2447 ev_free (EV_A);
2448#endif
1692} 2449}
1693 2450
1694#if EV_USE_INOTIFY 2451#if EV_USE_INOTIFY
1695inline_size void infy_fork (EV_P); 2452inline_size void infy_fork (EV_P);
1696#endif 2453#endif
… …
1711 infy_fork (EV_A); 2468 infy_fork (EV_A);
1712#endif 2469#endif
1713 2470
1714 if (ev_is_active (&pipe_w)) 2471 if (ev_is_active (&pipe_w))
1715 { 2472 {
1716 /* this "locks" the handlers against writing to the pipe */ 2473 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1717 /* while we modify the fd vars */
1718 sig_pending = 1;
1719#if EV_ASYNC_ENABLE
1720 async_pending = 1;
1721#endif
1722 2474
1723 ev_ref (EV_A); 2475 ev_ref (EV_A);
1724 ev_io_stop (EV_A_ &pipe_w); 2476 ev_io_stop (EV_A_ &pipe_w);
1725 2477
1726#if EV_USE_EVENTFD 2478#if EV_USE_EVENTFD
… …
1728 close (evfd); 2480 close (evfd);
1729#endif 2481#endif
1730 2482
1731 if (evpipe [0] >= 0) 2483 if (evpipe [0] >= 0)
1732 { 2484 {
1733 close (evpipe [0]); 2485 EV_WIN32_CLOSE_FD (evpipe [0]);
1734 close (evpipe [1]); 2486 EV_WIN32_CLOSE_FD (evpipe [1]);
1735 } 2487 }
1736 2488
2489#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1737 evpipe_init (EV_A); 2490 evpipe_init (EV_A);
1738 /* now iterate over everything, in case we missed something */ 2491 /* now iterate over everything, in case we missed something */
1739 pipecb (EV_A_ &pipe_w, EV_READ); 2492 pipecb (EV_A_ &pipe_w, EV_READ);
2493#endif
1740 } 2494 }
1741 2495
1742 postfork = 0; 2496 postfork = 0;
1743} 2497}
1744 2498
1745#if EV_MULTIPLICITY 2499#if EV_MULTIPLICITY
1746 2500
1747struct ev_loop * 2501struct ev_loop * ecb_cold
1748ev_loop_new (unsigned int flags) 2502ev_loop_new (unsigned int flags) EV_THROW
1749{ 2503{
1750 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2504 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1751 2505
1752 memset (EV_A, 0, sizeof (struct ev_loop)); 2506 memset (EV_A, 0, sizeof (struct ev_loop));
1753 loop_init (EV_A_ flags); 2507 loop_init (EV_A_ flags);
1754 2508
1755 if (ev_backend (EV_A)) 2509 if (ev_backend (EV_A))
1756 return EV_A; 2510 return EV_A;
1757 2511
2512 ev_free (EV_A);
1758 return 0; 2513 return 0;
1759} 2514}
1760 2515
1761void
1762ev_loop_destroy (EV_P)
1763{
1764 loop_destroy (EV_A);
1765 ev_free (loop);
1766}
1767
1768void
1769ev_loop_fork (EV_P)
1770{
1771 postfork = 1; /* must be in line with ev_default_fork */
1772}
1773#endif /* multiplicity */ 2516#endif /* multiplicity */
1774 2517
1775#if EV_VERIFY 2518#if EV_VERIFY
1776static void noinline 2519static void noinline ecb_cold
1777verify_watcher (EV_P_ W w) 2520verify_watcher (EV_P_ W w)
1778{ 2521{
1779 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2522 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1780 2523
1781 if (w->pending) 2524 if (w->pending)
1782 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2525 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1783} 2526}
1784 2527
1785static void noinline 2528static void noinline ecb_cold
1786verify_heap (EV_P_ ANHE *heap, int N) 2529verify_heap (EV_P_ ANHE *heap, int N)
1787{ 2530{
1788 int i; 2531 int i;
1789 2532
1790 for (i = HEAP0; i < N + HEAP0; ++i) 2533 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1795 2538
1796 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2539 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1797 } 2540 }
1798} 2541}
1799 2542
1800static void noinline 2543static void noinline ecb_cold
1801array_verify (EV_P_ W *ws, int cnt) 2544array_verify (EV_P_ W *ws, int cnt)
1802{ 2545{
1803 while (cnt--) 2546 while (cnt--)
1804 { 2547 {
1805 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2548 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1806 verify_watcher (EV_A_ ws [cnt]); 2549 verify_watcher (EV_A_ ws [cnt]);
1807 } 2550 }
1808} 2551}
1809#endif 2552#endif
1810 2553
1811#if EV_MINIMAL < 2 2554#if EV_FEATURE_API
1812void 2555void ecb_cold
1813ev_loop_verify (EV_P) 2556ev_verify (EV_P) EV_THROW
1814{ 2557{
1815#if EV_VERIFY 2558#if EV_VERIFY
1816 int i; 2559 int i;
1817 WL w; 2560 WL w;
1818 2561
… …
1852#if EV_FORK_ENABLE 2595#if EV_FORK_ENABLE
1853 assert (forkmax >= forkcnt); 2596 assert (forkmax >= forkcnt);
1854 array_verify (EV_A_ (W *)forks, forkcnt); 2597 array_verify (EV_A_ (W *)forks, forkcnt);
1855#endif 2598#endif
1856 2599
2600#if EV_CLEANUP_ENABLE
2601 assert (cleanupmax >= cleanupcnt);
2602 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2603#endif
2604
1857#if EV_ASYNC_ENABLE 2605#if EV_ASYNC_ENABLE
1858 assert (asyncmax >= asynccnt); 2606 assert (asyncmax >= asynccnt);
1859 array_verify (EV_A_ (W *)asyncs, asynccnt); 2607 array_verify (EV_A_ (W *)asyncs, asynccnt);
1860#endif 2608#endif
1861 2609
2610#if EV_PREPARE_ENABLE
1862 assert (preparemax >= preparecnt); 2611 assert (preparemax >= preparecnt);
1863 array_verify (EV_A_ (W *)prepares, preparecnt); 2612 array_verify (EV_A_ (W *)prepares, preparecnt);
2613#endif
1864 2614
2615#if EV_CHECK_ENABLE
1865 assert (checkmax >= checkcnt); 2616 assert (checkmax >= checkcnt);
1866 array_verify (EV_A_ (W *)checks, checkcnt); 2617 array_verify (EV_A_ (W *)checks, checkcnt);
2618#endif
1867 2619
1868# if 0 2620# if 0
2621#if EV_CHILD_ENABLE
1869 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2622 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1870 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2623 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2624#endif
1871# endif 2625# endif
1872#endif 2626#endif
1873} 2627}
1874#endif 2628#endif
1875 2629
1876#if EV_MULTIPLICITY 2630#if EV_MULTIPLICITY
1877struct ev_loop * 2631struct ev_loop * ecb_cold
1878ev_default_loop_init (unsigned int flags)
1879#else 2632#else
1880int 2633int
2634#endif
1881ev_default_loop (unsigned int flags) 2635ev_default_loop (unsigned int flags) EV_THROW
1882#endif
1883{ 2636{
1884 if (!ev_default_loop_ptr) 2637 if (!ev_default_loop_ptr)
1885 { 2638 {
1886#if EV_MULTIPLICITY 2639#if EV_MULTIPLICITY
1887 EV_P = ev_default_loop_ptr = &default_loop_struct; 2640 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1891 2644
1892 loop_init (EV_A_ flags); 2645 loop_init (EV_A_ flags);
1893 2646
1894 if (ev_backend (EV_A)) 2647 if (ev_backend (EV_A))
1895 { 2648 {
1896#ifndef _WIN32 2649#if EV_CHILD_ENABLE
1897 ev_signal_init (&childev, childcb, SIGCHLD); 2650 ev_signal_init (&childev, childcb, SIGCHLD);
1898 ev_set_priority (&childev, EV_MAXPRI); 2651 ev_set_priority (&childev, EV_MAXPRI);
1899 ev_signal_start (EV_A_ &childev); 2652 ev_signal_start (EV_A_ &childev);
1900 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2653 ev_unref (EV_A); /* child watcher should not keep loop alive */
1901#endif 2654#endif
… …
1906 2659
1907 return ev_default_loop_ptr; 2660 return ev_default_loop_ptr;
1908} 2661}
1909 2662
1910void 2663void
1911ev_default_destroy (void) 2664ev_loop_fork (EV_P) EV_THROW
1912{ 2665{
1913#if EV_MULTIPLICITY
1914 EV_P = ev_default_loop_ptr;
1915#endif
1916
1917 ev_default_loop_ptr = 0;
1918
1919#ifndef _WIN32
1920 ev_ref (EV_A); /* child watcher */
1921 ev_signal_stop (EV_A_ &childev);
1922#endif
1923
1924 loop_destroy (EV_A);
1925}
1926
1927void
1928ev_default_fork (void)
1929{
1930#if EV_MULTIPLICITY
1931 EV_P = ev_default_loop_ptr;
1932#endif
1933
1934 postfork = 1; /* must be in line with ev_loop_fork */ 2666 postfork = 1; /* must be in line with ev_default_fork */
1935} 2667}
1936 2668
1937/*****************************************************************************/ 2669/*****************************************************************************/
1938 2670
1939void 2671void
… …
1941{ 2673{
1942 EV_CB_INVOKE ((W)w, revents); 2674 EV_CB_INVOKE ((W)w, revents);
1943} 2675}
1944 2676
1945unsigned int 2677unsigned int
1946ev_pending_count (EV_P) 2678ev_pending_count (EV_P) EV_THROW
1947{ 2679{
1948 int pri; 2680 int pri;
1949 unsigned int count = 0; 2681 unsigned int count = 0;
1950 2682
1951 for (pri = NUMPRI; pri--; ) 2683 for (pri = NUMPRI; pri--; )
… …
1955} 2687}
1956 2688
1957void noinline 2689void noinline
1958ev_invoke_pending (EV_P) 2690ev_invoke_pending (EV_P)
1959{ 2691{
1960 int pri; 2692 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1961
1962 for (pri = NUMPRI; pri--; )
1963 while (pendingcnt [pri]) 2693 while (pendingcnt [pendingpri])
1964 { 2694 {
1965 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2695 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1966
1967 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1968 /* ^ this is no longer true, as pending_w could be here */
1969 2696
1970 p->w->pending = 0; 2697 p->w->pending = 0;
1971 EV_CB_INVOKE (p->w, p->events); 2698 EV_CB_INVOKE (p->w, p->events);
1972 EV_FREQUENT_CHECK; 2699 EV_FREQUENT_CHECK;
1973 } 2700 }
… …
2030 EV_FREQUENT_CHECK; 2757 EV_FREQUENT_CHECK;
2031 feed_reverse (EV_A_ (W)w); 2758 feed_reverse (EV_A_ (W)w);
2032 } 2759 }
2033 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2760 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2034 2761
2035 feed_reverse_done (EV_A_ EV_TIMEOUT); 2762 feed_reverse_done (EV_A_ EV_TIMER);
2036 } 2763 }
2037} 2764}
2038 2765
2039#if EV_PERIODIC_ENABLE 2766#if EV_PERIODIC_ENABLE
2767
2768static void noinline
2769periodic_recalc (EV_P_ ev_periodic *w)
2770{
2771 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2772 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2773
2774 /* the above almost always errs on the low side */
2775 while (at <= ev_rt_now)
2776 {
2777 ev_tstamp nat = at + w->interval;
2778
2779 /* when resolution fails us, we use ev_rt_now */
2780 if (expect_false (nat == at))
2781 {
2782 at = ev_rt_now;
2783 break;
2784 }
2785
2786 at = nat;
2787 }
2788
2789 ev_at (w) = at;
2790}
2791
2040/* make periodics pending */ 2792/* make periodics pending */
2041inline_size void 2793inline_size void
2042periodics_reify (EV_P) 2794periodics_reify (EV_P)
2043{ 2795{
2044 EV_FREQUENT_CHECK; 2796 EV_FREQUENT_CHECK;
… …
2063 ANHE_at_cache (periodics [HEAP0]); 2815 ANHE_at_cache (periodics [HEAP0]);
2064 downheap (periodics, periodiccnt, HEAP0); 2816 downheap (periodics, periodiccnt, HEAP0);
2065 } 2817 }
2066 else if (w->interval) 2818 else if (w->interval)
2067 { 2819 {
2068 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2820 periodic_recalc (EV_A_ w);
2069 /* if next trigger time is not sufficiently in the future, put it there */
2070 /* this might happen because of floating point inexactness */
2071 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2072 {
2073 ev_at (w) += w->interval;
2074
2075 /* if interval is unreasonably low we might still have a time in the past */
2076 /* so correct this. this will make the periodic very inexact, but the user */
2077 /* has effectively asked to get triggered more often than possible */
2078 if (ev_at (w) < ev_rt_now)
2079 ev_at (w) = ev_rt_now;
2080 }
2081
2082 ANHE_at_cache (periodics [HEAP0]); 2821 ANHE_at_cache (periodics [HEAP0]);
2083 downheap (periodics, periodiccnt, HEAP0); 2822 downheap (periodics, periodiccnt, HEAP0);
2084 } 2823 }
2085 else 2824 else
2086 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2825 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2093 feed_reverse_done (EV_A_ EV_PERIODIC); 2832 feed_reverse_done (EV_A_ EV_PERIODIC);
2094 } 2833 }
2095} 2834}
2096 2835
2097/* simply recalculate all periodics */ 2836/* simply recalculate all periodics */
2098/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2837/* TODO: maybe ensure that at least one event happens when jumping forward? */
2099static void noinline 2838static void noinline ecb_cold
2100periodics_reschedule (EV_P) 2839periodics_reschedule (EV_P)
2101{ 2840{
2102 int i; 2841 int i;
2103 2842
2104 /* adjust periodics after time jump */ 2843 /* adjust periodics after time jump */
… …
2107 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2846 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2108 2847
2109 if (w->reschedule_cb) 2848 if (w->reschedule_cb)
2110 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2849 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2111 else if (w->interval) 2850 else if (w->interval)
2112 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2851 periodic_recalc (EV_A_ w);
2113 2852
2114 ANHE_at_cache (periodics [i]); 2853 ANHE_at_cache (periodics [i]);
2115 } 2854 }
2116 2855
2117 reheap (periodics, periodiccnt); 2856 reheap (periodics, periodiccnt);
2118} 2857}
2119#endif 2858#endif
2120 2859
2121/* adjust all timers by a given offset */ 2860/* adjust all timers by a given offset */
2122static void noinline 2861static void noinline ecb_cold
2123timers_reschedule (EV_P_ ev_tstamp adjust) 2862timers_reschedule (EV_P_ ev_tstamp adjust)
2124{ 2863{
2125 int i; 2864 int i;
2126 2865
2127 for (i = 0; i < timercnt; ++i) 2866 for (i = 0; i < timercnt; ++i)
… …
2131 ANHE_at_cache (*he); 2870 ANHE_at_cache (*he);
2132 } 2871 }
2133} 2872}
2134 2873
2135/* fetch new monotonic and realtime times from the kernel */ 2874/* fetch new monotonic and realtime times from the kernel */
2136/* also detetc if there was a timejump, and act accordingly */ 2875/* also detect if there was a timejump, and act accordingly */
2137inline_speed void 2876inline_speed void
2138time_update (EV_P_ ev_tstamp max_block) 2877time_update (EV_P_ ev_tstamp max_block)
2139{ 2878{
2140#if EV_USE_MONOTONIC 2879#if EV_USE_MONOTONIC
2141 if (expect_true (have_monotonic)) 2880 if (expect_true (have_monotonic))
… …
2164 * doesn't hurt either as we only do this on time-jumps or 2903 * doesn't hurt either as we only do this on time-jumps or
2165 * in the unlikely event of having been preempted here. 2904 * in the unlikely event of having been preempted here.
2166 */ 2905 */
2167 for (i = 4; --i; ) 2906 for (i = 4; --i; )
2168 { 2907 {
2908 ev_tstamp diff;
2169 rtmn_diff = ev_rt_now - mn_now; 2909 rtmn_diff = ev_rt_now - mn_now;
2170 2910
2911 diff = odiff - rtmn_diff;
2912
2171 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2913 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2172 return; /* all is well */ 2914 return; /* all is well */
2173 2915
2174 ev_rt_now = ev_time (); 2916 ev_rt_now = ev_time ();
2175 mn_now = get_clock (); 2917 mn_now = get_clock ();
2176 now_floor = mn_now; 2918 now_floor = mn_now;
… …
2198 2940
2199 mn_now = ev_rt_now; 2941 mn_now = ev_rt_now;
2200 } 2942 }
2201} 2943}
2202 2944
2203void 2945int
2204ev_loop (EV_P_ int flags) 2946ev_run (EV_P_ int flags)
2205{ 2947{
2206#if EV_MINIMAL < 2 2948#if EV_FEATURE_API
2207 ++loop_depth; 2949 ++loop_depth;
2208#endif 2950#endif
2209 2951
2210 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2952 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2211 2953
2212 loop_done = EVUNLOOP_CANCEL; 2954 loop_done = EVBREAK_CANCEL;
2213 2955
2214 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2956 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2215 2957
2216 do 2958 do
2217 { 2959 {
2218#if EV_VERIFY >= 2 2960#if EV_VERIFY >= 2
2219 ev_loop_verify (EV_A); 2961 ev_verify (EV_A);
2220#endif 2962#endif
2221 2963
2222#ifndef _WIN32 2964#ifndef _WIN32
2223 if (expect_false (curpid)) /* penalise the forking check even more */ 2965 if (expect_false (curpid)) /* penalise the forking check even more */
2224 if (expect_false (getpid () != curpid)) 2966 if (expect_false (getpid () != curpid))
… …
2236 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2978 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2237 EV_INVOKE_PENDING; 2979 EV_INVOKE_PENDING;
2238 } 2980 }
2239#endif 2981#endif
2240 2982
2983#if EV_PREPARE_ENABLE
2241 /* queue prepare watchers (and execute them) */ 2984 /* queue prepare watchers (and execute them) */
2242 if (expect_false (preparecnt)) 2985 if (expect_false (preparecnt))
2243 { 2986 {
2244 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2987 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2245 EV_INVOKE_PENDING; 2988 EV_INVOKE_PENDING;
2246 } 2989 }
2990#endif
2247 2991
2248 if (expect_false (loop_done)) 2992 if (expect_false (loop_done))
2249 break; 2993 break;
2250 2994
2251 /* we might have forked, so reify kernel state if necessary */ 2995 /* we might have forked, so reify kernel state if necessary */
… …
2258 /* calculate blocking time */ 3002 /* calculate blocking time */
2259 { 3003 {
2260 ev_tstamp waittime = 0.; 3004 ev_tstamp waittime = 0.;
2261 ev_tstamp sleeptime = 0.; 3005 ev_tstamp sleeptime = 0.;
2262 3006
3007 /* remember old timestamp for io_blocktime calculation */
3008 ev_tstamp prev_mn_now = mn_now;
3009
3010 /* update time to cancel out callback processing overhead */
3011 time_update (EV_A_ 1e100);
3012
3013 /* from now on, we want a pipe-wake-up */
3014 pipe_write_wanted = 1;
3015
3016 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3017
2263 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3018 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2264 { 3019 {
2265 /* remember old timestamp for io_blocktime calculation */
2266 ev_tstamp prev_mn_now = mn_now;
2267
2268 /* update time to cancel out callback processing overhead */
2269 time_update (EV_A_ 1e100);
2270
2271 waittime = MAX_BLOCKTIME; 3020 waittime = MAX_BLOCKTIME;
2272 3021
2273 if (timercnt) 3022 if (timercnt)
2274 { 3023 {
2275 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3024 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2276 if (waittime > to) waittime = to; 3025 if (waittime > to) waittime = to;
2277 } 3026 }
2278 3027
2279#if EV_PERIODIC_ENABLE 3028#if EV_PERIODIC_ENABLE
2280 if (periodiccnt) 3029 if (periodiccnt)
2281 { 3030 {
2282 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3031 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2283 if (waittime > to) waittime = to; 3032 if (waittime > to) waittime = to;
2284 } 3033 }
2285#endif 3034#endif
2286 3035
2287 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3036 /* don't let timeouts decrease the waittime below timeout_blocktime */
2288 if (expect_false (waittime < timeout_blocktime)) 3037 if (expect_false (waittime < timeout_blocktime))
2289 waittime = timeout_blocktime; 3038 waittime = timeout_blocktime;
3039
3040 /* at this point, we NEED to wait, so we have to ensure */
3041 /* to pass a minimum nonzero value to the backend */
3042 if (expect_false (waittime < backend_mintime))
3043 waittime = backend_mintime;
2290 3044
2291 /* extra check because io_blocktime is commonly 0 */ 3045 /* extra check because io_blocktime is commonly 0 */
2292 if (expect_false (io_blocktime)) 3046 if (expect_false (io_blocktime))
2293 { 3047 {
2294 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3048 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2295 3049
2296 if (sleeptime > waittime - backend_fudge) 3050 if (sleeptime > waittime - backend_mintime)
2297 sleeptime = waittime - backend_fudge; 3051 sleeptime = waittime - backend_mintime;
2298 3052
2299 if (expect_true (sleeptime > 0.)) 3053 if (expect_true (sleeptime > 0.))
2300 { 3054 {
2301 ev_sleep (sleeptime); 3055 ev_sleep (sleeptime);
2302 waittime -= sleeptime; 3056 waittime -= sleeptime;
2303 } 3057 }
2304 } 3058 }
2305 } 3059 }
2306 3060
2307#if EV_MINIMAL < 2 3061#if EV_FEATURE_API
2308 ++loop_count; 3062 ++loop_count;
2309#endif 3063#endif
2310 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3064 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2311 backend_poll (EV_A_ waittime); 3065 backend_poll (EV_A_ waittime);
2312 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3066 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3067
3068 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3069
3070 if (pipe_write_skipped)
3071 {
3072 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3073 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3074 }
3075
2313 3076
2314 /* update ev_rt_now, do magic */ 3077 /* update ev_rt_now, do magic */
2315 time_update (EV_A_ waittime + sleeptime); 3078 time_update (EV_A_ waittime + sleeptime);
2316 } 3079 }
2317 3080
… …
2324#if EV_IDLE_ENABLE 3087#if EV_IDLE_ENABLE
2325 /* queue idle watchers unless other events are pending */ 3088 /* queue idle watchers unless other events are pending */
2326 idle_reify (EV_A); 3089 idle_reify (EV_A);
2327#endif 3090#endif
2328 3091
3092#if EV_CHECK_ENABLE
2329 /* queue check watchers, to be executed first */ 3093 /* queue check watchers, to be executed first */
2330 if (expect_false (checkcnt)) 3094 if (expect_false (checkcnt))
2331 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3095 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3096#endif
2332 3097
2333 EV_INVOKE_PENDING; 3098 EV_INVOKE_PENDING;
2334 } 3099 }
2335 while (expect_true ( 3100 while (expect_true (
2336 activecnt 3101 activecnt
2337 && !loop_done 3102 && !loop_done
2338 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3103 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2339 )); 3104 ));
2340 3105
2341 if (loop_done == EVUNLOOP_ONE) 3106 if (loop_done == EVBREAK_ONE)
2342 loop_done = EVUNLOOP_CANCEL; 3107 loop_done = EVBREAK_CANCEL;
2343 3108
2344#if EV_MINIMAL < 2 3109#if EV_FEATURE_API
2345 --loop_depth; 3110 --loop_depth;
2346#endif 3111#endif
3112
3113 return activecnt;
2347} 3114}
2348 3115
2349void 3116void
2350ev_unloop (EV_P_ int how) 3117ev_break (EV_P_ int how) EV_THROW
2351{ 3118{
2352 loop_done = how; 3119 loop_done = how;
2353} 3120}
2354 3121
2355void 3122void
2356ev_ref (EV_P) 3123ev_ref (EV_P) EV_THROW
2357{ 3124{
2358 ++activecnt; 3125 ++activecnt;
2359} 3126}
2360 3127
2361void 3128void
2362ev_unref (EV_P) 3129ev_unref (EV_P) EV_THROW
2363{ 3130{
2364 --activecnt; 3131 --activecnt;
2365} 3132}
2366 3133
2367void 3134void
2368ev_now_update (EV_P) 3135ev_now_update (EV_P) EV_THROW
2369{ 3136{
2370 time_update (EV_A_ 1e100); 3137 time_update (EV_A_ 1e100);
2371} 3138}
2372 3139
2373void 3140void
2374ev_suspend (EV_P) 3141ev_suspend (EV_P) EV_THROW
2375{ 3142{
2376 ev_now_update (EV_A); 3143 ev_now_update (EV_A);
2377} 3144}
2378 3145
2379void 3146void
2380ev_resume (EV_P) 3147ev_resume (EV_P) EV_THROW
2381{ 3148{
2382 ev_tstamp mn_prev = mn_now; 3149 ev_tstamp mn_prev = mn_now;
2383 3150
2384 ev_now_update (EV_A); 3151 ev_now_update (EV_A);
2385 timers_reschedule (EV_A_ mn_now - mn_prev); 3152 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2424 w->pending = 0; 3191 w->pending = 0;
2425 } 3192 }
2426} 3193}
2427 3194
2428int 3195int
2429ev_clear_pending (EV_P_ void *w) 3196ev_clear_pending (EV_P_ void *w) EV_THROW
2430{ 3197{
2431 W w_ = (W)w; 3198 W w_ = (W)w;
2432 int pending = w_->pending; 3199 int pending = w_->pending;
2433 3200
2434 if (expect_true (pending)) 3201 if (expect_true (pending))
… …
2467} 3234}
2468 3235
2469/*****************************************************************************/ 3236/*****************************************************************************/
2470 3237
2471void noinline 3238void noinline
2472ev_io_start (EV_P_ ev_io *w) 3239ev_io_start (EV_P_ ev_io *w) EV_THROW
2473{ 3240{
2474 int fd = w->fd; 3241 int fd = w->fd;
2475 3242
2476 if (expect_false (ev_is_active (w))) 3243 if (expect_false (ev_is_active (w)))
2477 return; 3244 return;
2478 3245
2479 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3246 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2480 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3247 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2481 3248
2482 EV_FREQUENT_CHECK; 3249 EV_FREQUENT_CHECK;
2483 3250
2484 ev_start (EV_A_ (W)w, 1); 3251 ev_start (EV_A_ (W)w, 1);
2485 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3252 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2490 3257
2491 EV_FREQUENT_CHECK; 3258 EV_FREQUENT_CHECK;
2492} 3259}
2493 3260
2494void noinline 3261void noinline
2495ev_io_stop (EV_P_ ev_io *w) 3262ev_io_stop (EV_P_ ev_io *w) EV_THROW
2496{ 3263{
2497 clear_pending (EV_A_ (W)w); 3264 clear_pending (EV_A_ (W)w);
2498 if (expect_false (!ev_is_active (w))) 3265 if (expect_false (!ev_is_active (w)))
2499 return; 3266 return;
2500 3267
… …
2503 EV_FREQUENT_CHECK; 3270 EV_FREQUENT_CHECK;
2504 3271
2505 wlist_del (&anfds[w->fd].head, (WL)w); 3272 wlist_del (&anfds[w->fd].head, (WL)w);
2506 ev_stop (EV_A_ (W)w); 3273 ev_stop (EV_A_ (W)w);
2507 3274
2508 fd_change (EV_A_ w->fd, 1); 3275 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2509 3276
2510 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2511} 3278}
2512 3279
2513void noinline 3280void noinline
2514ev_timer_start (EV_P_ ev_timer *w) 3281ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2515{ 3282{
2516 if (expect_false (ev_is_active (w))) 3283 if (expect_false (ev_is_active (w)))
2517 return; 3284 return;
2518 3285
2519 ev_at (w) += mn_now; 3286 ev_at (w) += mn_now;
… …
2533 3300
2534 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3301 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2535} 3302}
2536 3303
2537void noinline 3304void noinline
2538ev_timer_stop (EV_P_ ev_timer *w) 3305ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2539{ 3306{
2540 clear_pending (EV_A_ (W)w); 3307 clear_pending (EV_A_ (W)w);
2541 if (expect_false (!ev_is_active (w))) 3308 if (expect_false (!ev_is_active (w)))
2542 return; 3309 return;
2543 3310
… …
2555 timers [active] = timers [timercnt + HEAP0]; 3322 timers [active] = timers [timercnt + HEAP0];
2556 adjustheap (timers, timercnt, active); 3323 adjustheap (timers, timercnt, active);
2557 } 3324 }
2558 } 3325 }
2559 3326
2560 EV_FREQUENT_CHECK;
2561
2562 ev_at (w) -= mn_now; 3327 ev_at (w) -= mn_now;
2563 3328
2564 ev_stop (EV_A_ (W)w); 3329 ev_stop (EV_A_ (W)w);
3330
3331 EV_FREQUENT_CHECK;
2565} 3332}
2566 3333
2567void noinline 3334void noinline
2568ev_timer_again (EV_P_ ev_timer *w) 3335ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2569{ 3336{
2570 EV_FREQUENT_CHECK; 3337 EV_FREQUENT_CHECK;
3338
3339 clear_pending (EV_A_ (W)w);
2571 3340
2572 if (ev_is_active (w)) 3341 if (ev_is_active (w))
2573 { 3342 {
2574 if (w->repeat) 3343 if (w->repeat)
2575 { 3344 {
… …
2588 3357
2589 EV_FREQUENT_CHECK; 3358 EV_FREQUENT_CHECK;
2590} 3359}
2591 3360
2592ev_tstamp 3361ev_tstamp
2593ev_timer_remaining (EV_P_ ev_timer *w) 3362ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2594{ 3363{
2595 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3364 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2596} 3365}
2597 3366
2598#if EV_PERIODIC_ENABLE 3367#if EV_PERIODIC_ENABLE
2599void noinline 3368void noinline
2600ev_periodic_start (EV_P_ ev_periodic *w) 3369ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2601{ 3370{
2602 if (expect_false (ev_is_active (w))) 3371 if (expect_false (ev_is_active (w)))
2603 return; 3372 return;
2604 3373
2605 if (w->reschedule_cb) 3374 if (w->reschedule_cb)
2606 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3375 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2607 else if (w->interval) 3376 else if (w->interval)
2608 { 3377 {
2609 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3378 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2610 /* this formula differs from the one in periodic_reify because we do not always round up */ 3379 periodic_recalc (EV_A_ w);
2611 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2612 } 3380 }
2613 else 3381 else
2614 ev_at (w) = w->offset; 3382 ev_at (w) = w->offset;
2615 3383
2616 EV_FREQUENT_CHECK; 3384 EV_FREQUENT_CHECK;
… …
2626 3394
2627 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3395 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2628} 3396}
2629 3397
2630void noinline 3398void noinline
2631ev_periodic_stop (EV_P_ ev_periodic *w) 3399ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2632{ 3400{
2633 clear_pending (EV_A_ (W)w); 3401 clear_pending (EV_A_ (W)w);
2634 if (expect_false (!ev_is_active (w))) 3402 if (expect_false (!ev_is_active (w)))
2635 return; 3403 return;
2636 3404
… …
2648 periodics [active] = periodics [periodiccnt + HEAP0]; 3416 periodics [active] = periodics [periodiccnt + HEAP0];
2649 adjustheap (periodics, periodiccnt, active); 3417 adjustheap (periodics, periodiccnt, active);
2650 } 3418 }
2651 } 3419 }
2652 3420
2653 EV_FREQUENT_CHECK;
2654
2655 ev_stop (EV_A_ (W)w); 3421 ev_stop (EV_A_ (W)w);
3422
3423 EV_FREQUENT_CHECK;
2656} 3424}
2657 3425
2658void noinline 3426void noinline
2659ev_periodic_again (EV_P_ ev_periodic *w) 3427ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2660{ 3428{
2661 /* TODO: use adjustheap and recalculation */ 3429 /* TODO: use adjustheap and recalculation */
2662 ev_periodic_stop (EV_A_ w); 3430 ev_periodic_stop (EV_A_ w);
2663 ev_periodic_start (EV_A_ w); 3431 ev_periodic_start (EV_A_ w);
2664} 3432}
… …
2666 3434
2667#ifndef SA_RESTART 3435#ifndef SA_RESTART
2668# define SA_RESTART 0 3436# define SA_RESTART 0
2669#endif 3437#endif
2670 3438
3439#if EV_SIGNAL_ENABLE
3440
2671void noinline 3441void noinline
2672ev_signal_start (EV_P_ ev_signal *w) 3442ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2673{ 3443{
2674 if (expect_false (ev_is_active (w))) 3444 if (expect_false (ev_is_active (w)))
2675 return; 3445 return;
2676 3446
2677 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3447 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2721 if (!((WL)w)->next) 3491 if (!((WL)w)->next)
2722# if EV_USE_SIGNALFD 3492# if EV_USE_SIGNALFD
2723 if (sigfd < 0) /*TODO*/ 3493 if (sigfd < 0) /*TODO*/
2724# endif 3494# endif
2725 { 3495 {
2726# if _WIN32 3496# ifdef _WIN32
3497 evpipe_init (EV_A);
3498
2727 signal (w->signum, ev_sighandler); 3499 signal (w->signum, ev_sighandler);
2728# else 3500# else
2729 struct sigaction sa; 3501 struct sigaction sa;
2730 3502
2731 evpipe_init (EV_A); 3503 evpipe_init (EV_A);
… …
2733 sa.sa_handler = ev_sighandler; 3505 sa.sa_handler = ev_sighandler;
2734 sigfillset (&sa.sa_mask); 3506 sigfillset (&sa.sa_mask);
2735 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3507 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2736 sigaction (w->signum, &sa, 0); 3508 sigaction (w->signum, &sa, 0);
2737 3509
3510 if (origflags & EVFLAG_NOSIGMASK)
3511 {
2738 sigemptyset (&sa.sa_mask); 3512 sigemptyset (&sa.sa_mask);
2739 sigaddset (&sa.sa_mask, w->signum); 3513 sigaddset (&sa.sa_mask, w->signum);
2740 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3514 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3515 }
2741#endif 3516#endif
2742 } 3517 }
2743 3518
2744 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2745} 3520}
2746 3521
2747void noinline 3522void noinline
2748ev_signal_stop (EV_P_ ev_signal *w) 3523ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2749{ 3524{
2750 clear_pending (EV_A_ (W)w); 3525 clear_pending (EV_A_ (W)w);
2751 if (expect_false (!ev_is_active (w))) 3526 if (expect_false (!ev_is_active (w)))
2752 return; 3527 return;
2753 3528
… …
2762 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3537 signals [w->signum - 1].loop = 0; /* unattach from signal */
2763#endif 3538#endif
2764#if EV_USE_SIGNALFD 3539#if EV_USE_SIGNALFD
2765 if (sigfd >= 0) 3540 if (sigfd >= 0)
2766 { 3541 {
2767 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3542 sigset_t ss;
3543
3544 sigemptyset (&ss);
3545 sigaddset (&ss, w->signum);
2768 sigdelset (&sigfd_set, w->signum); 3546 sigdelset (&sigfd_set, w->signum);
3547
2769 signalfd (sigfd, &sigfd_set, 0); 3548 signalfd (sigfd, &sigfd_set, 0);
2770 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3549 sigprocmask (SIG_UNBLOCK, &ss, 0);
2771 /*TODO: maybe unblock signal? */
2772 } 3550 }
2773 else 3551 else
2774#endif 3552#endif
2775 signal (w->signum, SIG_DFL); 3553 signal (w->signum, SIG_DFL);
2776 } 3554 }
2777 3555
2778 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2779} 3557}
2780 3558
3559#endif
3560
3561#if EV_CHILD_ENABLE
3562
2781void 3563void
2782ev_child_start (EV_P_ ev_child *w) 3564ev_child_start (EV_P_ ev_child *w) EV_THROW
2783{ 3565{
2784#if EV_MULTIPLICITY 3566#if EV_MULTIPLICITY
2785 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3567 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2786#endif 3568#endif
2787 if (expect_false (ev_is_active (w))) 3569 if (expect_false (ev_is_active (w)))
2788 return; 3570 return;
2789 3571
2790 EV_FREQUENT_CHECK; 3572 EV_FREQUENT_CHECK;
2791 3573
2792 ev_start (EV_A_ (W)w, 1); 3574 ev_start (EV_A_ (W)w, 1);
2793 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3575 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2794 3576
2795 EV_FREQUENT_CHECK; 3577 EV_FREQUENT_CHECK;
2796} 3578}
2797 3579
2798void 3580void
2799ev_child_stop (EV_P_ ev_child *w) 3581ev_child_stop (EV_P_ ev_child *w) EV_THROW
2800{ 3582{
2801 clear_pending (EV_A_ (W)w); 3583 clear_pending (EV_A_ (W)w);
2802 if (expect_false (!ev_is_active (w))) 3584 if (expect_false (!ev_is_active (w)))
2803 return; 3585 return;
2804 3586
2805 EV_FREQUENT_CHECK; 3587 EV_FREQUENT_CHECK;
2806 3588
2807 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3589 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2808 ev_stop (EV_A_ (W)w); 3590 ev_stop (EV_A_ (W)w);
2809 3591
2810 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2811} 3593}
3594
3595#endif
2812 3596
2813#if EV_STAT_ENABLE 3597#if EV_STAT_ENABLE
2814 3598
2815# ifdef _WIN32 3599# ifdef _WIN32
2816# undef lstat 3600# undef lstat
… …
2822#define MIN_STAT_INTERVAL 0.1074891 3606#define MIN_STAT_INTERVAL 0.1074891
2823 3607
2824static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3608static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2825 3609
2826#if EV_USE_INOTIFY 3610#if EV_USE_INOTIFY
2827# define EV_INOTIFY_BUFSIZE 8192 3611
3612/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3613# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2828 3614
2829static void noinline 3615static void noinline
2830infy_add (EV_P_ ev_stat *w) 3616infy_add (EV_P_ ev_stat *w)
2831{ 3617{
2832 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); 3618 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);
2833 3619
2834 if (w->wd < 0) 3620 if (w->wd >= 0)
3621 {
3622 struct statfs sfs;
3623
3624 /* now local changes will be tracked by inotify, but remote changes won't */
3625 /* unless the filesystem is known to be local, we therefore still poll */
3626 /* also do poll on <2.6.25, but with normal frequency */
3627
3628 if (!fs_2625)
3629 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3630 else if (!statfs (w->path, &sfs)
3631 && (sfs.f_type == 0x1373 /* devfs */
3632 || sfs.f_type == 0xEF53 /* ext2/3 */
3633 || sfs.f_type == 0x3153464a /* jfs */
3634 || sfs.f_type == 0x52654973 /* reiser3 */
3635 || sfs.f_type == 0x01021994 /* tempfs */
3636 || sfs.f_type == 0x58465342 /* xfs */))
3637 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3638 else
3639 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2835 { 3640 }
3641 else
3642 {
3643 /* can't use inotify, continue to stat */
2836 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3644 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2837 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2838 3645
2839 /* monitor some parent directory for speedup hints */ 3646 /* if path is not there, monitor some parent directory for speedup hints */
2840 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3647 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2841 /* but an efficiency issue only */ 3648 /* but an efficiency issue only */
2842 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3649 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2843 { 3650 {
2844 char path [4096]; 3651 char path [4096];
… …
2854 if (!pend || pend == path) 3661 if (!pend || pend == path)
2855 break; 3662 break;
2856 3663
2857 *pend = 0; 3664 *pend = 0;
2858 w->wd = inotify_add_watch (fs_fd, path, mask); 3665 w->wd = inotify_add_watch (fs_fd, path, mask);
2859 } 3666 }
2860 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3667 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2861 } 3668 }
2862 } 3669 }
2863 3670
2864 if (w->wd >= 0) 3671 if (w->wd >= 0)
2865 {
2866 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3672 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2867 3673
2868 /* now local changes will be tracked by inotify, but remote changes won't */ 3674 /* now re-arm timer, if required */
2869 /* unless the filesystem it known to be local, we therefore still poll */ 3675 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2870 /* also do poll on <2.6.25, but with normal frequency */
2871 struct statfs sfs;
2872
2873 if (fs_2625 && !statfs (w->path, &sfs))
2874 if (sfs.f_type == 0x1373 /* devfs */
2875 || sfs.f_type == 0xEF53 /* ext2/3 */
2876 || sfs.f_type == 0x3153464a /* jfs */
2877 || sfs.f_type == 0x52654973 /* reiser3 */
2878 || sfs.f_type == 0x01021994 /* tempfs */
2879 || sfs.f_type == 0x58465342 /* xfs */)
2880 return;
2881
2882 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2883 ev_timer_again (EV_A_ &w->timer); 3676 ev_timer_again (EV_A_ &w->timer);
2884 } 3677 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2885} 3678}
2886 3679
2887static void noinline 3680static void noinline
2888infy_del (EV_P_ ev_stat *w) 3681infy_del (EV_P_ ev_stat *w)
2889{ 3682{
… …
2892 3685
2893 if (wd < 0) 3686 if (wd < 0)
2894 return; 3687 return;
2895 3688
2896 w->wd = -2; 3689 w->wd = -2;
2897 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3690 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2898 wlist_del (&fs_hash [slot].head, (WL)w); 3691 wlist_del (&fs_hash [slot].head, (WL)w);
2899 3692
2900 /* remove this watcher, if others are watching it, they will rearm */ 3693 /* remove this watcher, if others are watching it, they will rearm */
2901 inotify_rm_watch (fs_fd, wd); 3694 inotify_rm_watch (fs_fd, wd);
2902} 3695}
… …
2904static void noinline 3697static void noinline
2905infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3698infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2906{ 3699{
2907 if (slot < 0) 3700 if (slot < 0)
2908 /* overflow, need to check for all hash slots */ 3701 /* overflow, need to check for all hash slots */
2909 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3702 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2910 infy_wd (EV_A_ slot, wd, ev); 3703 infy_wd (EV_A_ slot, wd, ev);
2911 else 3704 else
2912 { 3705 {
2913 WL w_; 3706 WL w_;
2914 3707
2915 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3708 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2916 { 3709 {
2917 ev_stat *w = (ev_stat *)w_; 3710 ev_stat *w = (ev_stat *)w_;
2918 w_ = w_->next; /* lets us remove this watcher and all before it */ 3711 w_ = w_->next; /* lets us remove this watcher and all before it */
2919 3712
2920 if (w->wd == wd || wd == -1) 3713 if (w->wd == wd || wd == -1)
2921 { 3714 {
2922 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3715 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2923 { 3716 {
2924 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3717 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2925 w->wd = -1; 3718 w->wd = -1;
2926 infy_add (EV_A_ w); /* re-add, no matter what */ 3719 infy_add (EV_A_ w); /* re-add, no matter what */
2927 } 3720 }
2928 3721
2929 stat_timer_cb (EV_A_ &w->timer, 0); 3722 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2934 3727
2935static void 3728static void
2936infy_cb (EV_P_ ev_io *w, int revents) 3729infy_cb (EV_P_ ev_io *w, int revents)
2937{ 3730{
2938 char buf [EV_INOTIFY_BUFSIZE]; 3731 char buf [EV_INOTIFY_BUFSIZE];
2939 struct inotify_event *ev = (struct inotify_event *)buf;
2940 int ofs; 3732 int ofs;
2941 int len = read (fs_fd, buf, sizeof (buf)); 3733 int len = read (fs_fd, buf, sizeof (buf));
2942 3734
2943 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3735 for (ofs = 0; ofs < len; )
3736 {
3737 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2944 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3738 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3739 ofs += sizeof (struct inotify_event) + ev->len;
3740 }
2945} 3741}
2946 3742
2947inline_size void 3743inline_size void ecb_cold
2948check_2625 (EV_P) 3744ev_check_2625 (EV_P)
2949{ 3745{
2950 /* kernels < 2.6.25 are borked 3746 /* kernels < 2.6.25 are borked
2951 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3747 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2952 */ 3748 */
2953 struct utsname buf; 3749 if (ev_linux_version () < 0x020619)
2954 int major, minor, micro;
2955
2956 if (uname (&buf))
2957 return; 3750 return;
2958 3751
2959 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2960 return;
2961
2962 if (major < 2
2963 || (major == 2 && minor < 6)
2964 || (major == 2 && minor == 6 && micro < 25))
2965 return;
2966
2967 fs_2625 = 1; 3752 fs_2625 = 1;
3753}
3754
3755inline_size int
3756infy_newfd (void)
3757{
3758#if defined IN_CLOEXEC && defined IN_NONBLOCK
3759 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3760 if (fd >= 0)
3761 return fd;
3762#endif
3763 return inotify_init ();
2968} 3764}
2969 3765
2970inline_size void 3766inline_size void
2971infy_init (EV_P) 3767infy_init (EV_P)
2972{ 3768{
2973 if (fs_fd != -2) 3769 if (fs_fd != -2)
2974 return; 3770 return;
2975 3771
2976 fs_fd = -1; 3772 fs_fd = -1;
2977 3773
2978 check_2625 (EV_A); 3774 ev_check_2625 (EV_A);
2979 3775
2980 fs_fd = inotify_init (); 3776 fs_fd = infy_newfd ();
2981 3777
2982 if (fs_fd >= 0) 3778 if (fs_fd >= 0)
2983 { 3779 {
3780 fd_intern (fs_fd);
2984 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3781 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2985 ev_set_priority (&fs_w, EV_MAXPRI); 3782 ev_set_priority (&fs_w, EV_MAXPRI);
2986 ev_io_start (EV_A_ &fs_w); 3783 ev_io_start (EV_A_ &fs_w);
3784 ev_unref (EV_A);
2987 } 3785 }
2988} 3786}
2989 3787
2990inline_size void 3788inline_size void
2991infy_fork (EV_P) 3789infy_fork (EV_P)
… …
2993 int slot; 3791 int slot;
2994 3792
2995 if (fs_fd < 0) 3793 if (fs_fd < 0)
2996 return; 3794 return;
2997 3795
3796 ev_ref (EV_A);
3797 ev_io_stop (EV_A_ &fs_w);
2998 close (fs_fd); 3798 close (fs_fd);
2999 fs_fd = inotify_init (); 3799 fs_fd = infy_newfd ();
3000 3800
3801 if (fs_fd >= 0)
3802 {
3803 fd_intern (fs_fd);
3804 ev_io_set (&fs_w, fs_fd, EV_READ);
3805 ev_io_start (EV_A_ &fs_w);
3806 ev_unref (EV_A);
3807 }
3808
3001 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3809 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3002 { 3810 {
3003 WL w_ = fs_hash [slot].head; 3811 WL w_ = fs_hash [slot].head;
3004 fs_hash [slot].head = 0; 3812 fs_hash [slot].head = 0;
3005 3813
3006 while (w_) 3814 while (w_)
… …
3011 w->wd = -1; 3819 w->wd = -1;
3012 3820
3013 if (fs_fd >= 0) 3821 if (fs_fd >= 0)
3014 infy_add (EV_A_ w); /* re-add, no matter what */ 3822 infy_add (EV_A_ w); /* re-add, no matter what */
3015 else 3823 else
3824 {
3825 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3826 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3016 ev_timer_again (EV_A_ &w->timer); 3827 ev_timer_again (EV_A_ &w->timer);
3828 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3829 }
3017 } 3830 }
3018 } 3831 }
3019} 3832}
3020 3833
3021#endif 3834#endif
… …
3025#else 3838#else
3026# define EV_LSTAT(p,b) lstat (p, b) 3839# define EV_LSTAT(p,b) lstat (p, b)
3027#endif 3840#endif
3028 3841
3029void 3842void
3030ev_stat_stat (EV_P_ ev_stat *w) 3843ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3031{ 3844{
3032 if (lstat (w->path, &w->attr) < 0) 3845 if (lstat (w->path, &w->attr) < 0)
3033 w->attr.st_nlink = 0; 3846 w->attr.st_nlink = 0;
3034 else if (!w->attr.st_nlink) 3847 else if (!w->attr.st_nlink)
3035 w->attr.st_nlink = 1; 3848 w->attr.st_nlink = 1;
… …
3038static void noinline 3851static void noinline
3039stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3852stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3040{ 3853{
3041 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3854 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3042 3855
3043 /* we copy this here each the time so that */ 3856 ev_statdata prev = w->attr;
3044 /* prev has the old value when the callback gets invoked */
3045 w->prev = w->attr;
3046 ev_stat_stat (EV_A_ w); 3857 ev_stat_stat (EV_A_ w);
3047 3858
3048 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3859 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3049 if ( 3860 if (
3050 w->prev.st_dev != w->attr.st_dev 3861 prev.st_dev != w->attr.st_dev
3051 || w->prev.st_ino != w->attr.st_ino 3862 || prev.st_ino != w->attr.st_ino
3052 || w->prev.st_mode != w->attr.st_mode 3863 || prev.st_mode != w->attr.st_mode
3053 || w->prev.st_nlink != w->attr.st_nlink 3864 || prev.st_nlink != w->attr.st_nlink
3054 || w->prev.st_uid != w->attr.st_uid 3865 || prev.st_uid != w->attr.st_uid
3055 || w->prev.st_gid != w->attr.st_gid 3866 || prev.st_gid != w->attr.st_gid
3056 || w->prev.st_rdev != w->attr.st_rdev 3867 || prev.st_rdev != w->attr.st_rdev
3057 || w->prev.st_size != w->attr.st_size 3868 || prev.st_size != w->attr.st_size
3058 || w->prev.st_atime != w->attr.st_atime 3869 || prev.st_atime != w->attr.st_atime
3059 || w->prev.st_mtime != w->attr.st_mtime 3870 || prev.st_mtime != w->attr.st_mtime
3060 || w->prev.st_ctime != w->attr.st_ctime 3871 || prev.st_ctime != w->attr.st_ctime
3061 ) { 3872 ) {
3873 /* we only update w->prev on actual differences */
3874 /* in case we test more often than invoke the callback, */
3875 /* to ensure that prev is always different to attr */
3876 w->prev = prev;
3877
3062 #if EV_USE_INOTIFY 3878 #if EV_USE_INOTIFY
3063 if (fs_fd >= 0) 3879 if (fs_fd >= 0)
3064 { 3880 {
3065 infy_del (EV_A_ w); 3881 infy_del (EV_A_ w);
3066 infy_add (EV_A_ w); 3882 infy_add (EV_A_ w);
… …
3071 ev_feed_event (EV_A_ w, EV_STAT); 3887 ev_feed_event (EV_A_ w, EV_STAT);
3072 } 3888 }
3073} 3889}
3074 3890
3075void 3891void
3076ev_stat_start (EV_P_ ev_stat *w) 3892ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3077{ 3893{
3078 if (expect_false (ev_is_active (w))) 3894 if (expect_false (ev_is_active (w)))
3079 return; 3895 return;
3080 3896
3081 ev_stat_stat (EV_A_ w); 3897 ev_stat_stat (EV_A_ w);
… …
3091 3907
3092 if (fs_fd >= 0) 3908 if (fs_fd >= 0)
3093 infy_add (EV_A_ w); 3909 infy_add (EV_A_ w);
3094 else 3910 else
3095#endif 3911#endif
3912 {
3096 ev_timer_again (EV_A_ &w->timer); 3913 ev_timer_again (EV_A_ &w->timer);
3914 ev_unref (EV_A);
3915 }
3097 3916
3098 ev_start (EV_A_ (W)w, 1); 3917 ev_start (EV_A_ (W)w, 1);
3099 3918
3100 EV_FREQUENT_CHECK; 3919 EV_FREQUENT_CHECK;
3101} 3920}
3102 3921
3103void 3922void
3104ev_stat_stop (EV_P_ ev_stat *w) 3923ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3105{ 3924{
3106 clear_pending (EV_A_ (W)w); 3925 clear_pending (EV_A_ (W)w);
3107 if (expect_false (!ev_is_active (w))) 3926 if (expect_false (!ev_is_active (w)))
3108 return; 3927 return;
3109 3928
3110 EV_FREQUENT_CHECK; 3929 EV_FREQUENT_CHECK;
3111 3930
3112#if EV_USE_INOTIFY 3931#if EV_USE_INOTIFY
3113 infy_del (EV_A_ w); 3932 infy_del (EV_A_ w);
3114#endif 3933#endif
3934
3935 if (ev_is_active (&w->timer))
3936 {
3937 ev_ref (EV_A);
3115 ev_timer_stop (EV_A_ &w->timer); 3938 ev_timer_stop (EV_A_ &w->timer);
3939 }
3116 3940
3117 ev_stop (EV_A_ (W)w); 3941 ev_stop (EV_A_ (W)w);
3118 3942
3119 EV_FREQUENT_CHECK; 3943 EV_FREQUENT_CHECK;
3120} 3944}
3121#endif 3945#endif
3122 3946
3123#if EV_IDLE_ENABLE 3947#if EV_IDLE_ENABLE
3124void 3948void
3125ev_idle_start (EV_P_ ev_idle *w) 3949ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3126{ 3950{
3127 if (expect_false (ev_is_active (w))) 3951 if (expect_false (ev_is_active (w)))
3128 return; 3952 return;
3129 3953
3130 pri_adjust (EV_A_ (W)w); 3954 pri_adjust (EV_A_ (W)w);
… …
3143 3967
3144 EV_FREQUENT_CHECK; 3968 EV_FREQUENT_CHECK;
3145} 3969}
3146 3970
3147void 3971void
3148ev_idle_stop (EV_P_ ev_idle *w) 3972ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3149{ 3973{
3150 clear_pending (EV_A_ (W)w); 3974 clear_pending (EV_A_ (W)w);
3151 if (expect_false (!ev_is_active (w))) 3975 if (expect_false (!ev_is_active (w)))
3152 return; 3976 return;
3153 3977
… …
3165 3989
3166 EV_FREQUENT_CHECK; 3990 EV_FREQUENT_CHECK;
3167} 3991}
3168#endif 3992#endif
3169 3993
3994#if EV_PREPARE_ENABLE
3170void 3995void
3171ev_prepare_start (EV_P_ ev_prepare *w) 3996ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3172{ 3997{
3173 if (expect_false (ev_is_active (w))) 3998 if (expect_false (ev_is_active (w)))
3174 return; 3999 return;
3175 4000
3176 EV_FREQUENT_CHECK; 4001 EV_FREQUENT_CHECK;
… …
3181 4006
3182 EV_FREQUENT_CHECK; 4007 EV_FREQUENT_CHECK;
3183} 4008}
3184 4009
3185void 4010void
3186ev_prepare_stop (EV_P_ ev_prepare *w) 4011ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3187{ 4012{
3188 clear_pending (EV_A_ (W)w); 4013 clear_pending (EV_A_ (W)w);
3189 if (expect_false (!ev_is_active (w))) 4014 if (expect_false (!ev_is_active (w)))
3190 return; 4015 return;
3191 4016
… …
3200 4025
3201 ev_stop (EV_A_ (W)w); 4026 ev_stop (EV_A_ (W)w);
3202 4027
3203 EV_FREQUENT_CHECK; 4028 EV_FREQUENT_CHECK;
3204} 4029}
4030#endif
3205 4031
4032#if EV_CHECK_ENABLE
3206void 4033void
3207ev_check_start (EV_P_ ev_check *w) 4034ev_check_start (EV_P_ ev_check *w) EV_THROW
3208{ 4035{
3209 if (expect_false (ev_is_active (w))) 4036 if (expect_false (ev_is_active (w)))
3210 return; 4037 return;
3211 4038
3212 EV_FREQUENT_CHECK; 4039 EV_FREQUENT_CHECK;
… …
3217 4044
3218 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
3219} 4046}
3220 4047
3221void 4048void
3222ev_check_stop (EV_P_ ev_check *w) 4049ev_check_stop (EV_P_ ev_check *w) EV_THROW
3223{ 4050{
3224 clear_pending (EV_A_ (W)w); 4051 clear_pending (EV_A_ (W)w);
3225 if (expect_false (!ev_is_active (w))) 4052 if (expect_false (!ev_is_active (w)))
3226 return; 4053 return;
3227 4054
… …
3236 4063
3237 ev_stop (EV_A_ (W)w); 4064 ev_stop (EV_A_ (W)w);
3238 4065
3239 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
3240} 4067}
4068#endif
3241 4069
3242#if EV_EMBED_ENABLE 4070#if EV_EMBED_ENABLE
3243void noinline 4071void noinline
3244ev_embed_sweep (EV_P_ ev_embed *w) 4072ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3245{ 4073{
3246 ev_loop (w->other, EVLOOP_NONBLOCK); 4074 ev_run (w->other, EVRUN_NOWAIT);
3247} 4075}
3248 4076
3249static void 4077static void
3250embed_io_cb (EV_P_ ev_io *io, int revents) 4078embed_io_cb (EV_P_ ev_io *io, int revents)
3251{ 4079{
3252 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4080 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3253 4081
3254 if (ev_cb (w)) 4082 if (ev_cb (w))
3255 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4083 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3256 else 4084 else
3257 ev_loop (w->other, EVLOOP_NONBLOCK); 4085 ev_run (w->other, EVRUN_NOWAIT);
3258} 4086}
3259 4087
3260static void 4088static void
3261embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4089embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3262{ 4090{
… …
3266 EV_P = w->other; 4094 EV_P = w->other;
3267 4095
3268 while (fdchangecnt) 4096 while (fdchangecnt)
3269 { 4097 {
3270 fd_reify (EV_A); 4098 fd_reify (EV_A);
3271 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4099 ev_run (EV_A_ EVRUN_NOWAIT);
3272 } 4100 }
3273 } 4101 }
3274} 4102}
3275 4103
3276static void 4104static void
… …
3282 4110
3283 { 4111 {
3284 EV_P = w->other; 4112 EV_P = w->other;
3285 4113
3286 ev_loop_fork (EV_A); 4114 ev_loop_fork (EV_A);
3287 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4115 ev_run (EV_A_ EVRUN_NOWAIT);
3288 } 4116 }
3289 4117
3290 ev_embed_start (EV_A_ w); 4118 ev_embed_start (EV_A_ w);
3291} 4119}
3292 4120
… …
3297 ev_idle_stop (EV_A_ idle); 4125 ev_idle_stop (EV_A_ idle);
3298} 4126}
3299#endif 4127#endif
3300 4128
3301void 4129void
3302ev_embed_start (EV_P_ ev_embed *w) 4130ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3303{ 4131{
3304 if (expect_false (ev_is_active (w))) 4132 if (expect_false (ev_is_active (w)))
3305 return; 4133 return;
3306 4134
3307 { 4135 {
… …
3328 4156
3329 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3330} 4158}
3331 4159
3332void 4160void
3333ev_embed_stop (EV_P_ ev_embed *w) 4161ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3334{ 4162{
3335 clear_pending (EV_A_ (W)w); 4163 clear_pending (EV_A_ (W)w);
3336 if (expect_false (!ev_is_active (w))) 4164 if (expect_false (!ev_is_active (w)))
3337 return; 4165 return;
3338 4166
… …
3340 4168
3341 ev_io_stop (EV_A_ &w->io); 4169 ev_io_stop (EV_A_ &w->io);
3342 ev_prepare_stop (EV_A_ &w->prepare); 4170 ev_prepare_stop (EV_A_ &w->prepare);
3343 ev_fork_stop (EV_A_ &w->fork); 4171 ev_fork_stop (EV_A_ &w->fork);
3344 4172
4173 ev_stop (EV_A_ (W)w);
4174
3345 EV_FREQUENT_CHECK; 4175 EV_FREQUENT_CHECK;
3346} 4176}
3347#endif 4177#endif
3348 4178
3349#if EV_FORK_ENABLE 4179#if EV_FORK_ENABLE
3350void 4180void
3351ev_fork_start (EV_P_ ev_fork *w) 4181ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3352{ 4182{
3353 if (expect_false (ev_is_active (w))) 4183 if (expect_false (ev_is_active (w)))
3354 return; 4184 return;
3355 4185
3356 EV_FREQUENT_CHECK; 4186 EV_FREQUENT_CHECK;
… …
3361 4191
3362 EV_FREQUENT_CHECK; 4192 EV_FREQUENT_CHECK;
3363} 4193}
3364 4194
3365void 4195void
3366ev_fork_stop (EV_P_ ev_fork *w) 4196ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3367{ 4197{
3368 clear_pending (EV_A_ (W)w); 4198 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4199 if (expect_false (!ev_is_active (w)))
3370 return; 4200 return;
3371 4201
… …
3382 4212
3383 EV_FREQUENT_CHECK; 4213 EV_FREQUENT_CHECK;
3384} 4214}
3385#endif 4215#endif
3386 4216
4217#if EV_CLEANUP_ENABLE
4218void
4219ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4220{
4221 if (expect_false (ev_is_active (w)))
4222 return;
4223
4224 EV_FREQUENT_CHECK;
4225
4226 ev_start (EV_A_ (W)w, ++cleanupcnt);
4227 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4228 cleanups [cleanupcnt - 1] = w;
4229
4230 /* cleanup watchers should never keep a refcount on the loop */
4231 ev_unref (EV_A);
4232 EV_FREQUENT_CHECK;
4233}
4234
4235void
4236ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4237{
4238 clear_pending (EV_A_ (W)w);
4239 if (expect_false (!ev_is_active (w)))
4240 return;
4241
4242 EV_FREQUENT_CHECK;
4243 ev_ref (EV_A);
4244
4245 {
4246 int active = ev_active (w);
4247
4248 cleanups [active - 1] = cleanups [--cleanupcnt];
4249 ev_active (cleanups [active - 1]) = active;
4250 }
4251
4252 ev_stop (EV_A_ (W)w);
4253
4254 EV_FREQUENT_CHECK;
4255}
4256#endif
4257
3387#if EV_ASYNC_ENABLE 4258#if EV_ASYNC_ENABLE
3388void 4259void
3389ev_async_start (EV_P_ ev_async *w) 4260ev_async_start (EV_P_ ev_async *w) EV_THROW
3390{ 4261{
3391 if (expect_false (ev_is_active (w))) 4262 if (expect_false (ev_is_active (w)))
3392 return; 4263 return;
4264
4265 w->sent = 0;
3393 4266
3394 evpipe_init (EV_A); 4267 evpipe_init (EV_A);
3395 4268
3396 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
3397 4270
… …
3401 4274
3402 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
3403} 4276}
3404 4277
3405void 4278void
3406ev_async_stop (EV_P_ ev_async *w) 4279ev_async_stop (EV_P_ ev_async *w) EV_THROW
3407{ 4280{
3408 clear_pending (EV_A_ (W)w); 4281 clear_pending (EV_A_ (W)w);
3409 if (expect_false (!ev_is_active (w))) 4282 if (expect_false (!ev_is_active (w)))
3410 return; 4283 return;
3411 4284
… …
3422 4295
3423 EV_FREQUENT_CHECK; 4296 EV_FREQUENT_CHECK;
3424} 4297}
3425 4298
3426void 4299void
3427ev_async_send (EV_P_ ev_async *w) 4300ev_async_send (EV_P_ ev_async *w) EV_THROW
3428{ 4301{
3429 w->sent = 1; 4302 w->sent = 1;
3430 evpipe_write (EV_A_ &async_pending); 4303 evpipe_write (EV_A_ &async_pending);
3431} 4304}
3432#endif 4305#endif
… …
3469 4342
3470 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4343 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3471} 4344}
3472 4345
3473void 4346void
3474ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4347ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3475{ 4348{
3476 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4349 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3477 4350
3478 if (expect_false (!once)) 4351 if (expect_false (!once))
3479 { 4352 {
3480 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4353 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3481 return; 4354 return;
3482 } 4355 }
3483 4356
3484 once->cb = cb; 4357 once->cb = cb;
3485 once->arg = arg; 4358 once->arg = arg;
… …
3500} 4373}
3501 4374
3502/*****************************************************************************/ 4375/*****************************************************************************/
3503 4376
3504#if EV_WALK_ENABLE 4377#if EV_WALK_ENABLE
3505void 4378void ecb_cold
3506ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4379ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3507{ 4380{
3508 int i, j; 4381 int i, j;
3509 ev_watcher_list *wl, *wn; 4382 ev_watcher_list *wl, *wn;
3510 4383
3511 if (types & (EV_IO | EV_EMBED)) 4384 if (types & (EV_IO | EV_EMBED))
… …
3554 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4427 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3555#endif 4428#endif
3556 4429
3557#if EV_IDLE_ENABLE 4430#if EV_IDLE_ENABLE
3558 if (types & EV_IDLE) 4431 if (types & EV_IDLE)
3559 for (j = NUMPRI; i--; ) 4432 for (j = NUMPRI; j--; )
3560 for (i = idlecnt [j]; i--; ) 4433 for (i = idlecnt [j]; i--; )
3561 cb (EV_A_ EV_IDLE, idles [j][i]); 4434 cb (EV_A_ EV_IDLE, idles [j][i]);
3562#endif 4435#endif
3563 4436
3564#if EV_FORK_ENABLE 4437#if EV_FORK_ENABLE
… …
3572 if (types & EV_ASYNC) 4445 if (types & EV_ASYNC)
3573 for (i = asynccnt; i--; ) 4446 for (i = asynccnt; i--; )
3574 cb (EV_A_ EV_ASYNC, asyncs [i]); 4447 cb (EV_A_ EV_ASYNC, asyncs [i]);
3575#endif 4448#endif
3576 4449
4450#if EV_PREPARE_ENABLE
3577 if (types & EV_PREPARE) 4451 if (types & EV_PREPARE)
3578 for (i = preparecnt; i--; ) 4452 for (i = preparecnt; i--; )
3579#if EV_EMBED_ENABLE 4453# if EV_EMBED_ENABLE
3580 if (ev_cb (prepares [i]) != embed_prepare_cb) 4454 if (ev_cb (prepares [i]) != embed_prepare_cb)
3581#endif 4455# endif
3582 cb (EV_A_ EV_PREPARE, prepares [i]); 4456 cb (EV_A_ EV_PREPARE, prepares [i]);
4457#endif
3583 4458
4459#if EV_CHECK_ENABLE
3584 if (types & EV_CHECK) 4460 if (types & EV_CHECK)
3585 for (i = checkcnt; i--; ) 4461 for (i = checkcnt; i--; )
3586 cb (EV_A_ EV_CHECK, checks [i]); 4462 cb (EV_A_ EV_CHECK, checks [i]);
4463#endif
3587 4464
4465#if EV_SIGNAL_ENABLE
3588 if (types & EV_SIGNAL) 4466 if (types & EV_SIGNAL)
3589 for (i = 0; i < EV_NSIG - 1; ++i) 4467 for (i = 0; i < EV_NSIG - 1; ++i)
3590 for (wl = signals [i].head; wl; ) 4468 for (wl = signals [i].head; wl; )
3591 { 4469 {
3592 wn = wl->next; 4470 wn = wl->next;
3593 cb (EV_A_ EV_SIGNAL, wl); 4471 cb (EV_A_ EV_SIGNAL, wl);
3594 wl = wn; 4472 wl = wn;
3595 } 4473 }
4474#endif
3596 4475
4476#if EV_CHILD_ENABLE
3597 if (types & EV_CHILD) 4477 if (types & EV_CHILD)
3598 for (i = EV_PID_HASHSIZE; i--; ) 4478 for (i = (EV_PID_HASHSIZE); i--; )
3599 for (wl = childs [i]; wl; ) 4479 for (wl = childs [i]; wl; )
3600 { 4480 {
3601 wn = wl->next; 4481 wn = wl->next;
3602 cb (EV_A_ EV_CHILD, wl); 4482 cb (EV_A_ EV_CHILD, wl);
3603 wl = wn; 4483 wl = wn;
3604 } 4484 }
4485#endif
3605/* EV_STAT 0x00001000 /* stat data changed */ 4486/* EV_STAT 0x00001000 /* stat data changed */
3606/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4487/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3607} 4488}
3608#endif 4489#endif
3609 4490
3610#if EV_MULTIPLICITY 4491#if EV_MULTIPLICITY
3611 #include "ev_wrap.h" 4492 #include "ev_wrap.h"
3612#endif 4493#endif
3613 4494
3614#ifdef __cplusplus
3615}
3616#endif
3617

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