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Comparing libev/ev.c (file contents):
Revision 1.313 by root, Wed Aug 19 23:44:51 2009 UTC vs.
Revision 1.426 by root, Sun May 6 13:42:10 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? */
… …
480 995
481#ifndef EV_FD_TO_WIN32_HANDLE 996#ifndef EV_FD_TO_WIN32_HANDLE
482# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 997# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
483#endif 998#endif
484#ifndef EV_WIN32_HANDLE_TO_FD 999#ifndef EV_WIN32_HANDLE_TO_FD
485# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1000# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
486#endif 1001#endif
487#ifndef EV_WIN32_CLOSE_FD 1002#ifndef EV_WIN32_CLOSE_FD
488# define EV_WIN32_CLOSE_FD(fd) close (fd) 1003# define EV_WIN32_CLOSE_FD(fd) close (fd)
489#endif 1004#endif
490 1005
… …
492# include "ev_win32.c" 1007# include "ev_win32.c"
493#endif 1008#endif
494 1009
495/*****************************************************************************/ 1010/*****************************************************************************/
496 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
497static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg) EV_THROW;
498 1111
499void 1112void ecb_cold
500ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
501{ 1114{
502 syserr_cb = cb; 1115 syserr_cb = cb;
503} 1116}
504 1117
505static void noinline 1118static void noinline ecb_cold
506ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
507{ 1120{
508 if (!msg) 1121 if (!msg)
509 msg = "(libev) system error"; 1122 msg = "(libev) system error";
510 1123
511 if (syserr_cb) 1124 if (syserr_cb)
512 syserr_cb (msg); 1125 syserr_cb (msg);
513 else 1126 else
514 { 1127 {
1128#if EV_AVOID_STDIO
1129 ev_printerr (msg);
1130 ev_printerr (": ");
1131 ev_printerr (strerror (errno));
1132 ev_printerr ("\n");
1133#else
515 perror (msg); 1134 perror (msg);
1135#endif
516 abort (); 1136 abort ();
517 } 1137 }
518} 1138}
519 1139
520static void * 1140static void *
521ev_realloc_emul (void *ptr, long size) 1141ev_realloc_emul (void *ptr, long size)
522{ 1142{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
523 /* some systems, notably openbsd and darwin, fail to properly 1146 /* some systems, notably openbsd and darwin, fail to properly
524 * 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
525 * the single unix specification, so work around them here. 1148 * the single unix specification, so work around them here.
526 */ 1149 */
527 1150
528 if (size) 1151 if (size)
529 return realloc (ptr, size); 1152 return realloc (ptr, size);
530 1153
531 free (ptr); 1154 free (ptr);
532 return 0; 1155 return 0;
1156#endif
533} 1157}
534 1158
535static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
536 1160
537void 1161void ecb_cold
538ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
539{ 1163{
540 alloc = cb; 1164 alloc = cb;
541} 1165}
542 1166
543inline_speed void * 1167inline_speed void *
… …
545{ 1169{
546 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
547 1171
548 if (!ptr && size) 1172 if (!ptr && size)
549 { 1173 {
1174#if EV_AVOID_STDIO
1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1176#else
550 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1178#endif
551 abort (); 1179 abort ();
552 } 1180 }
553 1181
554 return ptr; 1182 return ptr;
555} 1183}
… …
571 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 */
572 unsigned char unused; 1200 unsigned char unused;
573#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
574 unsigned int egen; /* generation counter to counter epoll bugs */ 1202 unsigned int egen; /* generation counter to counter epoll bugs */
575#endif 1203#endif
576#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
577 SOCKET handle; 1205 SOCKET handle;
1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
578#endif 1209#endif
579} ANFD; 1210} ANFD;
580 1211
581/* stores the pending event set for a given watcher */ 1212/* stores the pending event set for a given watcher */
582typedef struct 1213typedef struct
… …
624 #undef VAR 1255 #undef VAR
625 }; 1256 };
626 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
627 1258
628 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
629 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 */
630 1261
631#else 1262#else
632 1263
633 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 */
634 #define VAR(name,decl) static decl; 1265 #define VAR(name,decl) static decl;
635 #include "ev_vars.h" 1266 #include "ev_vars.h"
636 #undef VAR 1267 #undef VAR
637 1268
638 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
639 1270
640#endif 1271#endif
641 1272
642#if EV_MINIMAL < 2 1273#if EV_FEATURE_API
643# 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)
644# 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)
645# define EV_INVOKE_PENDING invoke_cb (EV_A) 1276# define EV_INVOKE_PENDING invoke_cb (EV_A)
646#else 1277#else
647# define EV_RELEASE_CB (void)0 1278# define EV_RELEASE_CB (void)0
648# define EV_ACQUIRE_CB (void)0 1279# define EV_ACQUIRE_CB (void)0
649# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
650#endif 1281#endif
651 1282
652#define EVUNLOOP_RECURSE 0x80 1283#define EVBREAK_RECURSE 0x80
653 1284
654/*****************************************************************************/ 1285/*****************************************************************************/
655 1286
656#ifndef EV_HAVE_EV_TIME 1287#ifndef EV_HAVE_EV_TIME
657ev_tstamp 1288ev_tstamp
658ev_time (void) 1289ev_time (void) EV_THROW
659{ 1290{
660#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
661 if (expect_true (have_realtime)) 1292 if (expect_true (have_realtime))
662 { 1293 {
663 struct timespec ts; 1294 struct timespec ts;
… …
687 return ev_time (); 1318 return ev_time ();
688} 1319}
689 1320
690#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
691ev_tstamp 1322ev_tstamp
692ev_now (EV_P) 1323ev_now (EV_P) EV_THROW
693{ 1324{
694 return ev_rt_now; 1325 return ev_rt_now;
695} 1326}
696#endif 1327#endif
697 1328
698void 1329void
699ev_sleep (ev_tstamp delay) 1330ev_sleep (ev_tstamp delay) EV_THROW
700{ 1331{
701 if (delay > 0.) 1332 if (delay > 0.)
702 { 1333 {
703#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
704 struct timespec ts; 1335 struct timespec ts;
705 1336
706 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
707 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
708
709 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
710#elif defined(_WIN32) 1339#elif defined _WIN32
711 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
712#else 1341#else
713 struct timeval tv; 1342 struct timeval tv;
714 1343
715 tv.tv_sec = (time_t)delay;
716 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
717
718 /* 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 */
719 /* something not guaranteed by newer posix versions, but guaranteed */ 1345 /* something not guaranteed by newer posix versions, but guaranteed */
720 /* by older ones */ 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
721 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
722#endif 1349#endif
723 } 1350 }
724} 1351}
725 1352
726/*****************************************************************************/ 1353/*****************************************************************************/
727 1354
728#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 */
729 1356
730/* find a suitable new size for the given array, */ 1357/* find a suitable new size for the given array, */
731/* hopefully by rounding to a ncie-to-malloc size */ 1358/* hopefully by rounding to a nice-to-malloc size */
732inline_size int 1359inline_size int
733array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
734{ 1361{
735 int ncur = cur + 1; 1362 int ncur = cur + 1;
736 1363
737 do 1364 do
738 ncur <<= 1; 1365 ncur <<= 1;
739 while (cnt > ncur); 1366 while (cnt > ncur);
740 1367
741 /* 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 */
742 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
743 { 1370 {
744 ncur *= elem; 1371 ncur *= elem;
745 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);
746 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
748 } 1375 }
749 1376
750 return ncur; 1377 return ncur;
751} 1378}
752 1379
753static noinline void * 1380static void * noinline ecb_cold
754array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
755{ 1382{
756 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
757 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
758} 1385}
… …
761 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
762 1389
763#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
764 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
765 { \ 1392 { \
766 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
767 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
768 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
769 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
770 } 1397 }
771 1398
… …
789pendingcb (EV_P_ ev_prepare *w, int revents) 1416pendingcb (EV_P_ ev_prepare *w, int revents)
790{ 1417{
791} 1418}
792 1419
793void noinline 1420void noinline
794ev_feed_event (EV_P_ void *w, int revents) 1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW
795{ 1422{
796 W w_ = (W)w; 1423 W w_ = (W)w;
797 int pri = ABSPRI (w_); 1424 int pri = ABSPRI (w_);
798 1425
799 if (expect_false (w_->pending)) 1426 if (expect_false (w_->pending))
… …
803 w_->pending = ++pendingcnt [pri]; 1430 w_->pending = ++pendingcnt [pri];
804 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
805 pendings [pri][w_->pending - 1].w = w_; 1432 pendings [pri][w_->pending - 1].w = w_;
806 pendings [pri][w_->pending - 1].events = revents; 1433 pendings [pri][w_->pending - 1].events = revents;
807 } 1434 }
1435
1436 pendingpri = NUMPRI - 1;
808} 1437}
809 1438
810inline_speed void 1439inline_speed void
811feed_reverse (EV_P_ W w) 1440feed_reverse (EV_P_ W w)
812{ 1441{
… …
832} 1461}
833 1462
834/*****************************************************************************/ 1463/*****************************************************************************/
835 1464
836inline_speed void 1465inline_speed void
837fd_event_nc (EV_P_ int fd, int revents) 1466fd_event_nocheck (EV_P_ int fd, int revents)
838{ 1467{
839 ANFD *anfd = anfds + fd; 1468 ANFD *anfd = anfds + fd;
840 ev_io *w; 1469 ev_io *w;
841 1470
842 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)
… …
854fd_event (EV_P_ int fd, int revents) 1483fd_event (EV_P_ int fd, int revents)
855{ 1484{
856 ANFD *anfd = anfds + fd; 1485 ANFD *anfd = anfds + fd;
857 1486
858 if (expect_true (!anfd->reify)) 1487 if (expect_true (!anfd->reify))
859 fd_event_nc (EV_A_ fd, revents); 1488 fd_event_nocheck (EV_A_ fd, revents);
860} 1489}
861 1490
862void 1491void
863ev_feed_fd_event (EV_P_ int fd, int revents) 1492ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
864{ 1493{
865 if (fd >= 0 && fd < anfdmax) 1494 if (fd >= 0 && fd < anfdmax)
866 fd_event_nc (EV_A_ fd, revents); 1495 fd_event_nocheck (EV_A_ fd, revents);
867} 1496}
868 1497
869/* make sure the external fd watch events are in-sync */ 1498/* make sure the external fd watch events are in-sync */
870/* with the kernel/libev internal state */ 1499/* with the kernel/libev internal state */
871inline_size void 1500inline_size void
872fd_reify (EV_P) 1501fd_reify (EV_P)
873{ 1502{
874 int i; 1503 int i;
875 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
876 for (i = 0; i < fdchangecnt; ++i) 1530 for (i = 0; i < fdchangecnt; ++i)
877 { 1531 {
878 int fd = fdchanges [i]; 1532 int fd = fdchanges [i];
879 ANFD *anfd = anfds + fd; 1533 ANFD *anfd = anfds + fd;
880 ev_io *w; 1534 ev_io *w;
881 1535
882 unsigned char events = 0; 1536 unsigned char o_events = anfd->events;
1537 unsigned char o_reify = anfd->reify;
883 1538
884 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1539 anfd->reify = 0;
885 events |= (unsigned char)w->events;
886 1540
887#if EV_SELECT_IS_WINSOCKET 1541 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
888 if (events)
889 { 1542 {
890 unsigned long arg; 1543 anfd->events = 0;
891 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1544
892 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1545 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1546 anfd->events |= (unsigned char)w->events;
1547
1548 if (o_events != anfd->events)
1549 o_reify = EV__IOFDSET; /* actually |= */
893 } 1550 }
894#endif
895 1551
896 { 1552 if (o_reify & EV__IOFDSET)
897 unsigned char o_events = anfd->events;
898 unsigned char o_reify = anfd->reify;
899
900 anfd->reify = 0;
901 anfd->events = events;
902
903 if (o_events != events || o_reify & EV__IOFDSET)
904 backend_modify (EV_A_ fd, o_events, events); 1553 backend_modify (EV_A_ fd, o_events, anfd->events);
905 }
906 } 1554 }
907 1555
908 fdchangecnt = 0; 1556 fdchangecnt = 0;
909} 1557}
910 1558
… …
922 fdchanges [fdchangecnt - 1] = fd; 1570 fdchanges [fdchangecnt - 1] = fd;
923 } 1571 }
924} 1572}
925 1573
926/* 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 */
927inline_speed void 1575inline_speed void ecb_cold
928fd_kill (EV_P_ int fd) 1576fd_kill (EV_P_ int fd)
929{ 1577{
930 ev_io *w; 1578 ev_io *w;
931 1579
932 while ((w = (ev_io *)anfds [fd].head)) 1580 while ((w = (ev_io *)anfds [fd].head))
… …
934 ev_io_stop (EV_A_ w); 1582 ev_io_stop (EV_A_ w);
935 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);
936 } 1584 }
937} 1585}
938 1586
939/* check whether the given fd is atcually valid, for error recovery */ 1587/* check whether the given fd is actually valid, for error recovery */
940inline_size int 1588inline_size int ecb_cold
941fd_valid (int fd) 1589fd_valid (int fd)
942{ 1590{
943#ifdef _WIN32 1591#ifdef _WIN32
944 return _get_osfhandle (fd) != -1; 1592 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
945#else 1593#else
946 return fcntl (fd, F_GETFD) != -1; 1594 return fcntl (fd, F_GETFD) != -1;
947#endif 1595#endif
948} 1596}
949 1597
950/* called on EBADF to verify fds */ 1598/* called on EBADF to verify fds */
951static void noinline 1599static void noinline ecb_cold
952fd_ebadf (EV_P) 1600fd_ebadf (EV_P)
953{ 1601{
954 int fd; 1602 int fd;
955 1603
956 for (fd = 0; fd < anfdmax; ++fd) 1604 for (fd = 0; fd < anfdmax; ++fd)
… …
958 if (!fd_valid (fd) && errno == EBADF) 1606 if (!fd_valid (fd) && errno == EBADF)
959 fd_kill (EV_A_ fd); 1607 fd_kill (EV_A_ fd);
960} 1608}
961 1609
962/* 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 */
963static void noinline 1611static void noinline ecb_cold
964fd_enomem (EV_P) 1612fd_enomem (EV_P)
965{ 1613{
966 int fd; 1614 int fd;
967 1615
968 for (fd = anfdmax; fd--; ) 1616 for (fd = anfdmax; fd--; )
… …
986 anfds [fd].emask = 0; 1634 anfds [fd].emask = 0;
987 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1635 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
988 } 1636 }
989} 1637}
990 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
991/*****************************************************************************/ 1653/*****************************************************************************/
992 1654
993/* 1655/*
994 * 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
995 * 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
996 * the branching factor of the d-tree. 1658 * the branching factor of the d-tree.
997 */ 1659 */
998 1660
999/* 1661/*
… …
1147 1809
1148static ANSIG signals [EV_NSIG - 1]; 1810static ANSIG signals [EV_NSIG - 1];
1149 1811
1150/*****************************************************************************/ 1812/*****************************************************************************/
1151 1813
1152/* used to prepare libev internal fd's */ 1814#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1153/* this is not fork-safe */
1154inline_speed void
1155fd_intern (int fd)
1156{
1157#ifdef _WIN32
1158 unsigned long arg = 1;
1159 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1160#else
1161 fcntl (fd, F_SETFD, FD_CLOEXEC);
1162 fcntl (fd, F_SETFL, O_NONBLOCK);
1163#endif
1164}
1165 1815
1166static void noinline 1816static void noinline ecb_cold
1167evpipe_init (EV_P) 1817evpipe_init (EV_P)
1168{ 1818{
1169 if (!ev_is_active (&pipe_w)) 1819 if (!ev_is_active (&pipe_w))
1170 { 1820 {
1171#if EV_USE_EVENTFD 1821# if EV_USE_EVENTFD
1172 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1822 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1173 if (evfd < 0 && errno == EINVAL) 1823 if (evfd < 0 && errno == EINVAL)
1174 evfd = eventfd (0, 0); 1824 evfd = eventfd (0, 0);
1175 1825
1176 if (evfd >= 0) 1826 if (evfd >= 0)
… …
1178 evpipe [0] = -1; 1828 evpipe [0] = -1;
1179 fd_intern (evfd); /* doing it twice doesn't hurt */ 1829 fd_intern (evfd); /* doing it twice doesn't hurt */
1180 ev_io_set (&pipe_w, evfd, EV_READ); 1830 ev_io_set (&pipe_w, evfd, EV_READ);
1181 } 1831 }
1182 else 1832 else
1183#endif 1833# endif
1184 { 1834 {
1185 while (pipe (evpipe)) 1835 while (pipe (evpipe))
1186 ev_syserr ("(libev) error creating signal/async pipe"); 1836 ev_syserr ("(libev) error creating signal/async pipe");
1187 1837
1188 fd_intern (evpipe [0]); 1838 fd_intern (evpipe [0]);
… …
1193 ev_io_start (EV_A_ &pipe_w); 1843 ev_io_start (EV_A_ &pipe_w);
1194 ev_unref (EV_A); /* watcher should not keep loop alive */ 1844 ev_unref (EV_A); /* watcher should not keep loop alive */
1195 } 1845 }
1196} 1846}
1197 1847
1198inline_size void 1848inline_speed void
1199evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1849evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1200{ 1850{
1201 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)
1202 { 1865 {
1866 int old_errno;
1867
1868 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1869
1203 int old_errno = errno; /* save errno because write might clobber it */ 1870 old_errno = errno; /* save errno because write will clobber it */
1204
1205 *flag = 1;
1206 1871
1207#if EV_USE_EVENTFD 1872#if EV_USE_EVENTFD
1208 if (evfd >= 0) 1873 if (evfd >= 0)
1209 { 1874 {
1210 uint64_t counter = 1; 1875 uint64_t counter = 1;
1211 write (evfd, &counter, sizeof (uint64_t)); 1876 write (evfd, &counter, sizeof (uint64_t));
1212 } 1877 }
1213 else 1878 else
1214#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 */
1215 write (evpipe [1], &old_errno, 1); 1888 write (evpipe [1], &(evpipe [1]), 1);
1889 }
1216 1890
1217 errno = old_errno; 1891 errno = old_errno;
1218 } 1892 }
1219} 1893}
1220 1894
… …
1223static void 1897static void
1224pipecb (EV_P_ ev_io *iow, int revents) 1898pipecb (EV_P_ ev_io *iow, int revents)
1225{ 1899{
1226 int i; 1900 int i;
1227 1901
1902 if (revents & EV_READ)
1903 {
1228#if EV_USE_EVENTFD 1904#if EV_USE_EVENTFD
1229 if (evfd >= 0) 1905 if (evfd >= 0)
1230 { 1906 {
1231 uint64_t counter; 1907 uint64_t counter;
1232 read (evfd, &counter, sizeof (uint64_t)); 1908 read (evfd, &counter, sizeof (uint64_t));
1233 } 1909 }
1234 else 1910 else
1235#endif 1911#endif
1236 { 1912 {
1237 char dummy; 1913 char dummy;
1914 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1238 read (evpipe [0], &dummy, 1); 1915 read (evpipe [0], &dummy, 1);
1916 }
1239 } 1917 }
1240 1918
1919 pipe_write_skipped = 0;
1920
1921 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1922
1923#if EV_SIGNAL_ENABLE
1241 if (sig_pending) 1924 if (sig_pending)
1242 { 1925 {
1243 sig_pending = 0; 1926 sig_pending = 0;
1927
1928 ECB_MEMORY_FENCE_RELEASE;
1244 1929
1245 for (i = EV_NSIG - 1; i--; ) 1930 for (i = EV_NSIG - 1; i--; )
1246 if (expect_false (signals [i].pending)) 1931 if (expect_false (signals [i].pending))
1247 ev_feed_signal_event (EV_A_ i + 1); 1932 ev_feed_signal_event (EV_A_ i + 1);
1248 } 1933 }
1934#endif
1249 1935
1250#if EV_ASYNC_ENABLE 1936#if EV_ASYNC_ENABLE
1251 if (async_pending) 1937 if (async_pending)
1252 { 1938 {
1253 async_pending = 0; 1939 async_pending = 0;
1940
1941 ECB_MEMORY_FENCE_RELEASE;
1254 1942
1255 for (i = asynccnt; i--; ) 1943 for (i = asynccnt; i--; )
1256 if (asyncs [i]->sent) 1944 if (asyncs [i]->sent)
1257 { 1945 {
1258 asyncs [i]->sent = 0; 1946 asyncs [i]->sent = 0;
… …
1262#endif 1950#endif
1263} 1951}
1264 1952
1265/*****************************************************************************/ 1953/*****************************************************************************/
1266 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
1267static void 1972static void
1268ev_sighandler (int signum) 1973ev_sighandler (int signum)
1269{ 1974{
1270#if EV_MULTIPLICITY
1271 EV_P = signals [signum - 1].loop;
1272#endif
1273
1274#if _WIN32 1975#ifdef _WIN32
1275 signal (signum, ev_sighandler); 1976 signal (signum, ev_sighandler);
1276#endif 1977#endif
1277 1978
1278 signals [signum - 1].pending = 1; 1979 ev_feed_signal (signum);
1279 evpipe_write (EV_A_ &sig_pending);
1280} 1980}
1281 1981
1282void noinline 1982void noinline
1283ev_feed_signal_event (EV_P_ int signum) 1983ev_feed_signal_event (EV_P_ int signum) EV_THROW
1284{ 1984{
1285 WL w; 1985 WL w;
1286 1986
1287 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1987 if (expect_false (signum <= 0 || signum > EV_NSIG))
1288 return; 1988 return;
… …
1321 break; 2021 break;
1322 } 2022 }
1323} 2023}
1324#endif 2024#endif
1325 2025
2026#endif
2027
1326/*****************************************************************************/ 2028/*****************************************************************************/
1327 2029
2030#if EV_CHILD_ENABLE
1328static WL childs [EV_PID_HASHSIZE]; 2031static WL childs [EV_PID_HASHSIZE];
1329
1330#ifndef _WIN32
1331 2032
1332static ev_signal childev; 2033static ev_signal childev;
1333 2034
1334#ifndef WIFCONTINUED 2035#ifndef WIFCONTINUED
1335# define WIFCONTINUED(status) 0 2036# define WIFCONTINUED(status) 0
… …
1340child_reap (EV_P_ int chain, int pid, int status) 2041child_reap (EV_P_ int chain, int pid, int status)
1341{ 2042{
1342 ev_child *w; 2043 ev_child *w;
1343 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2044 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1344 2045
1345 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)
1346 { 2047 {
1347 if ((w->pid == pid || !w->pid) 2048 if ((w->pid == pid || !w->pid)
1348 && (!traced || (w->flags & 1))) 2049 && (!traced || (w->flags & 1)))
1349 { 2050 {
1350 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 */
… …
1375 /* 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 */
1376 /* 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 */
1377 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2078 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1378 2079
1379 child_reap (EV_A_ pid, pid, status); 2080 child_reap (EV_A_ pid, pid, status);
1380 if (EV_PID_HASHSIZE > 1) 2081 if ((EV_PID_HASHSIZE) > 1)
1381 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 */
1382} 2083}
1383 2084
1384#endif 2085#endif
1385 2086
1386/*****************************************************************************/ 2087/*****************************************************************************/
1387 2088
2089#if EV_USE_IOCP
2090# include "ev_iocp.c"
2091#endif
1388#if EV_USE_PORT 2092#if EV_USE_PORT
1389# include "ev_port.c" 2093# include "ev_port.c"
1390#endif 2094#endif
1391#if EV_USE_KQUEUE 2095#if EV_USE_KQUEUE
1392# include "ev_kqueue.c" 2096# include "ev_kqueue.c"
… …
1399#endif 2103#endif
1400#if EV_USE_SELECT 2104#if EV_USE_SELECT
1401# include "ev_select.c" 2105# include "ev_select.c"
1402#endif 2106#endif
1403 2107
1404int 2108int ecb_cold
1405ev_version_major (void) 2109ev_version_major (void) EV_THROW
1406{ 2110{
1407 return EV_VERSION_MAJOR; 2111 return EV_VERSION_MAJOR;
1408} 2112}
1409 2113
1410int 2114int ecb_cold
1411ev_version_minor (void) 2115ev_version_minor (void) EV_THROW
1412{ 2116{
1413 return EV_VERSION_MINOR; 2117 return EV_VERSION_MINOR;
1414} 2118}
1415 2119
1416/* 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 */
1417int inline_size 2121int inline_size ecb_cold
1418enable_secure (void) 2122enable_secure (void)
1419{ 2123{
1420#ifdef _WIN32 2124#ifdef _WIN32
1421 return 0; 2125 return 0;
1422#else 2126#else
1423 return getuid () != geteuid () 2127 return getuid () != geteuid ()
1424 || getgid () != getegid (); 2128 || getgid () != getegid ();
1425#endif 2129#endif
1426} 2130}
1427 2131
1428unsigned int 2132unsigned int ecb_cold
1429ev_supported_backends (void) 2133ev_supported_backends (void) EV_THROW
1430{ 2134{
1431 unsigned int flags = 0; 2135 unsigned int flags = 0;
1432 2136
1433 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2137 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1434 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2138 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1437 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2141 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1438 2142
1439 return flags; 2143 return flags;
1440} 2144}
1441 2145
1442unsigned int 2146unsigned int ecb_cold
1443ev_recommended_backends (void) 2147ev_recommended_backends (void) EV_THROW
1444{ 2148{
1445 unsigned int flags = ev_supported_backends (); 2149 unsigned int flags = ev_supported_backends ();
1446 2150
1447#ifndef __NetBSD__ 2151#ifndef __NetBSD__
1448 /* kqueue is borked on everything but netbsd apparently */ 2152 /* kqueue is borked on everything but netbsd apparently */
… …
1452#ifdef __APPLE__ 2156#ifdef __APPLE__
1453 /* only select works correctly on that "unix-certified" platform */ 2157 /* only select works correctly on that "unix-certified" platform */
1454 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2158 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1455 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 */
1456#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
1457 2164
1458 return flags; 2165 return flags;
1459} 2166}
1460 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
1461unsigned int 2180unsigned int
1462ev_embeddable_backends (void) 2181ev_backend (EV_P) EV_THROW
1463{ 2182{
1464 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2183 return backend;
1465
1466 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1467 /* please fix it and tell me how to detect the fix */
1468 flags &= ~EVBACKEND_EPOLL;
1469
1470 return flags;
1471} 2184}
1472 2185
2186#if EV_FEATURE_API
1473unsigned int 2187unsigned int
1474ev_backend (EV_P) 2188ev_iteration (EV_P) EV_THROW
1475{ 2189{
1476 return backend; 2190 return loop_count;
1477} 2191}
1478 2192
1479#if EV_MINIMAL < 2
1480unsigned int 2193unsigned int
1481ev_loop_count (EV_P) 2194ev_depth (EV_P) EV_THROW
1482{
1483 return loop_count;
1484}
1485
1486unsigned int
1487ev_loop_depth (EV_P)
1488{ 2195{
1489 return loop_depth; 2196 return loop_depth;
1490} 2197}
1491 2198
1492void 2199void
1493ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2200ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1494{ 2201{
1495 io_blocktime = interval; 2202 io_blocktime = interval;
1496} 2203}
1497 2204
1498void 2205void
1499ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2206ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1500{ 2207{
1501 timeout_blocktime = interval; 2208 timeout_blocktime = interval;
1502} 2209}
1503 2210
1504void 2211void
1505ev_set_userdata (EV_P_ void *data) 2212ev_set_userdata (EV_P_ void *data) EV_THROW
1506{ 2213{
1507 userdata = data; 2214 userdata = data;
1508} 2215}
1509 2216
1510void * 2217void *
1511ev_userdata (EV_P) 2218ev_userdata (EV_P) EV_THROW
1512{ 2219{
1513 return userdata; 2220 return userdata;
1514} 2221}
1515 2222
2223void
1516void 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
1517{ 2225{
1518 invoke_cb = invoke_pending_cb; 2226 invoke_cb = invoke_pending_cb;
1519} 2227}
1520 2228
2229void
1521void 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
1522{ 2231{
1523 release_cb = release; 2232 release_cb = release;
1524 acquire_cb = acquire; 2233 acquire_cb = acquire;
1525} 2234}
1526#endif 2235#endif
1527 2236
1528/* initialise a loop structure, must be zero-initialised */ 2237/* initialise a loop structure, must be zero-initialised */
1529static void noinline 2238static void noinline ecb_cold
1530loop_init (EV_P_ unsigned int flags) 2239loop_init (EV_P_ unsigned int flags) EV_THROW
1531{ 2240{
1532 if (!backend) 2241 if (!backend)
1533 { 2242 {
2243 origflags = flags;
2244
1534#if EV_USE_REALTIME 2245#if EV_USE_REALTIME
1535 if (!have_realtime) 2246 if (!have_realtime)
1536 { 2247 {
1537 struct timespec ts; 2248 struct timespec ts;
1538 2249
… …
1560 if (!(flags & EVFLAG_NOENV) 2271 if (!(flags & EVFLAG_NOENV)
1561 && !enable_secure () 2272 && !enable_secure ()
1562 && getenv ("LIBEV_FLAGS")) 2273 && getenv ("LIBEV_FLAGS"))
1563 flags = atoi (getenv ("LIBEV_FLAGS")); 2274 flags = atoi (getenv ("LIBEV_FLAGS"));
1564 2275
1565 ev_rt_now = ev_time (); 2276 ev_rt_now = ev_time ();
1566 mn_now = get_clock (); 2277 mn_now = get_clock ();
1567 now_floor = mn_now; 2278 now_floor = mn_now;
1568 rtmn_diff = ev_rt_now - mn_now; 2279 rtmn_diff = ev_rt_now - mn_now;
1569#if EV_MINIMAL < 2 2280#if EV_FEATURE_API
1570 invoke_cb = ev_invoke_pending; 2281 invoke_cb = ev_invoke_pending;
1571#endif 2282#endif
1572 2283
1573 io_blocktime = 0.; 2284 io_blocktime = 0.;
1574 timeout_blocktime = 0.; 2285 timeout_blocktime = 0.;
1575 backend = 0; 2286 backend = 0;
1576 backend_fd = -1; 2287 backend_fd = -1;
1577 sig_pending = 0; 2288 sig_pending = 0;
1578#if EV_ASYNC_ENABLE 2289#if EV_ASYNC_ENABLE
1579 async_pending = 0; 2290 async_pending = 0;
1580#endif 2291#endif
2292 pipe_write_skipped = 0;
2293 pipe_write_wanted = 0;
1581#if EV_USE_INOTIFY 2294#if EV_USE_INOTIFY
1582 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2295 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1583#endif 2296#endif
1584#if EV_USE_SIGNALFD 2297#if EV_USE_SIGNALFD
1585 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2298 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1586#endif 2299#endif
1587 2300
1588 if (!(flags & 0x0000ffffU)) 2301 if (!(flags & EVBACKEND_MASK))
1589 flags |= ev_recommended_backends (); 2302 flags |= ev_recommended_backends ();
1590 2303
2304#if EV_USE_IOCP
2305 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2306#endif
1591#if EV_USE_PORT 2307#if EV_USE_PORT
1592 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2308 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1593#endif 2309#endif
1594#if EV_USE_KQUEUE 2310#if EV_USE_KQUEUE
1595 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2311 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1604 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2320 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1605#endif 2321#endif
1606 2322
1607 ev_prepare_init (&pending_w, pendingcb); 2323 ev_prepare_init (&pending_w, pendingcb);
1608 2324
2325#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1609 ev_init (&pipe_w, pipecb); 2326 ev_init (&pipe_w, pipecb);
1610 ev_set_priority (&pipe_w, EV_MAXPRI); 2327 ev_set_priority (&pipe_w, EV_MAXPRI);
2328#endif
1611 } 2329 }
1612} 2330}
1613 2331
1614/* free up a loop structure */ 2332/* free up a loop structure */
1615static void noinline 2333void ecb_cold
1616loop_destroy (EV_P) 2334ev_loop_destroy (EV_P)
1617{ 2335{
1618 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
1619 2360
1620 if (ev_is_active (&pipe_w)) 2361 if (ev_is_active (&pipe_w))
1621 { 2362 {
1622 /*ev_ref (EV_A);*/ 2363 /*ev_ref (EV_A);*/
1623 /*ev_io_stop (EV_A_ &pipe_w);*/ 2364 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1634 } 2375 }
1635 } 2376 }
1636 2377
1637#if EV_USE_SIGNALFD 2378#if EV_USE_SIGNALFD
1638 if (ev_is_active (&sigfd_w)) 2379 if (ev_is_active (&sigfd_w))
1639 {
1640 /*ev_ref (EV_A);*/
1641 /*ev_io_stop (EV_A_ &sigfd_w);*/
1642
1643 close (sigfd); 2380 close (sigfd);
1644 }
1645#endif 2381#endif
1646 2382
1647#if EV_USE_INOTIFY 2383#if EV_USE_INOTIFY
1648 if (fs_fd >= 0) 2384 if (fs_fd >= 0)
1649 close (fs_fd); 2385 close (fs_fd);
1650#endif 2386#endif
1651 2387
1652 if (backend_fd >= 0) 2388 if (backend_fd >= 0)
1653 close (backend_fd); 2389 close (backend_fd);
1654 2390
2391#if EV_USE_IOCP
2392 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2393#endif
1655#if EV_USE_PORT 2394#if EV_USE_PORT
1656 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2395 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1657#endif 2396#endif
1658#if EV_USE_KQUEUE 2397#if EV_USE_KQUEUE
1659 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2398 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1686 array_free (periodic, EMPTY); 2425 array_free (periodic, EMPTY);
1687#endif 2426#endif
1688#if EV_FORK_ENABLE 2427#if EV_FORK_ENABLE
1689 array_free (fork, EMPTY); 2428 array_free (fork, EMPTY);
1690#endif 2429#endif
2430#if EV_CLEANUP_ENABLE
2431 array_free (cleanup, EMPTY);
2432#endif
1691 array_free (prepare, EMPTY); 2433 array_free (prepare, EMPTY);
1692 array_free (check, EMPTY); 2434 array_free (check, EMPTY);
1693#if EV_ASYNC_ENABLE 2435#if EV_ASYNC_ENABLE
1694 array_free (async, EMPTY); 2436 array_free (async, EMPTY);
1695#endif 2437#endif
1696 2438
1697 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
1698} 2449}
1699 2450
1700#if EV_USE_INOTIFY 2451#if EV_USE_INOTIFY
1701inline_size void infy_fork (EV_P); 2452inline_size void infy_fork (EV_P);
1702#endif 2453#endif
… …
1717 infy_fork (EV_A); 2468 infy_fork (EV_A);
1718#endif 2469#endif
1719 2470
1720 if (ev_is_active (&pipe_w)) 2471 if (ev_is_active (&pipe_w))
1721 { 2472 {
1722 /* this "locks" the handlers against writing to the pipe */ 2473 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1723 /* while we modify the fd vars */
1724 sig_pending = 1;
1725#if EV_ASYNC_ENABLE
1726 async_pending = 1;
1727#endif
1728 2474
1729 ev_ref (EV_A); 2475 ev_ref (EV_A);
1730 ev_io_stop (EV_A_ &pipe_w); 2476 ev_io_stop (EV_A_ &pipe_w);
1731 2477
1732#if EV_USE_EVENTFD 2478#if EV_USE_EVENTFD
… …
1738 { 2484 {
1739 EV_WIN32_CLOSE_FD (evpipe [0]); 2485 EV_WIN32_CLOSE_FD (evpipe [0]);
1740 EV_WIN32_CLOSE_FD (evpipe [1]); 2486 EV_WIN32_CLOSE_FD (evpipe [1]);
1741 } 2487 }
1742 2488
2489#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1743 evpipe_init (EV_A); 2490 evpipe_init (EV_A);
1744 /* now iterate over everything, in case we missed something */ 2491 /* now iterate over everything, in case we missed something */
1745 pipecb (EV_A_ &pipe_w, EV_READ); 2492 pipecb (EV_A_ &pipe_w, EV_READ);
2493#endif
1746 } 2494 }
1747 2495
1748 postfork = 0; 2496 postfork = 0;
1749} 2497}
1750 2498
1751#if EV_MULTIPLICITY 2499#if EV_MULTIPLICITY
1752 2500
1753struct ev_loop * 2501struct ev_loop * ecb_cold
1754ev_loop_new (unsigned int flags) 2502ev_loop_new (unsigned int flags) EV_THROW
1755{ 2503{
1756 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2504 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1757 2505
1758 memset (EV_A, 0, sizeof (struct ev_loop)); 2506 memset (EV_A, 0, sizeof (struct ev_loop));
1759 loop_init (EV_A_ flags); 2507 loop_init (EV_A_ flags);
1760 2508
1761 if (ev_backend (EV_A)) 2509 if (ev_backend (EV_A))
1762 return EV_A; 2510 return EV_A;
1763 2511
2512 ev_free (EV_A);
1764 return 0; 2513 return 0;
1765} 2514}
1766 2515
1767void
1768ev_loop_destroy (EV_P)
1769{
1770 loop_destroy (EV_A);
1771 ev_free (loop);
1772}
1773
1774void
1775ev_loop_fork (EV_P)
1776{
1777 postfork = 1; /* must be in line with ev_default_fork */
1778}
1779#endif /* multiplicity */ 2516#endif /* multiplicity */
1780 2517
1781#if EV_VERIFY 2518#if EV_VERIFY
1782static void noinline 2519static void noinline ecb_cold
1783verify_watcher (EV_P_ W w) 2520verify_watcher (EV_P_ W w)
1784{ 2521{
1785 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));
1786 2523
1787 if (w->pending) 2524 if (w->pending)
1788 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));
1789} 2526}
1790 2527
1791static void noinline 2528static void noinline ecb_cold
1792verify_heap (EV_P_ ANHE *heap, int N) 2529verify_heap (EV_P_ ANHE *heap, int N)
1793{ 2530{
1794 int i; 2531 int i;
1795 2532
1796 for (i = HEAP0; i < N + HEAP0; ++i) 2533 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1801 2538
1802 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2539 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1803 } 2540 }
1804} 2541}
1805 2542
1806static void noinline 2543static void noinline ecb_cold
1807array_verify (EV_P_ W *ws, int cnt) 2544array_verify (EV_P_ W *ws, int cnt)
1808{ 2545{
1809 while (cnt--) 2546 while (cnt--)
1810 { 2547 {
1811 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2548 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1812 verify_watcher (EV_A_ ws [cnt]); 2549 verify_watcher (EV_A_ ws [cnt]);
1813 } 2550 }
1814} 2551}
1815#endif 2552#endif
1816 2553
1817#if EV_MINIMAL < 2 2554#if EV_FEATURE_API
1818void 2555void ecb_cold
1819ev_loop_verify (EV_P) 2556ev_verify (EV_P) EV_THROW
1820{ 2557{
1821#if EV_VERIFY 2558#if EV_VERIFY
1822 int i; 2559 int i, j;
1823 WL w; 2560 WL w, w2;
1824 2561
1825 assert (activecnt >= -1); 2562 assert (activecnt >= -1);
1826 2563
1827 assert (fdchangemax >= fdchangecnt); 2564 assert (fdchangemax >= fdchangecnt);
1828 for (i = 0; i < fdchangecnt; ++i) 2565 for (i = 0; i < fdchangecnt; ++i)
1829 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2566 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1830 2567
1831 assert (anfdmax >= 0); 2568 assert (anfdmax >= 0);
1832 for (i = 0; i < anfdmax; ++i) 2569 for (i = j = 0; i < anfdmax; ++i)
1833 for (w = anfds [i].head; w; w = w->next) 2570 for (w = w2 = anfds [i].head; w; w = w->next)
1834 { 2571 {
1835 verify_watcher (EV_A_ (W)w); 2572 verify_watcher (EV_A_ (W)w);
2573
2574 if (++j & 1)
2575 w2 = w2->next;
2576
2577 assert (("libev: io watcher list contains a loop", w != w2));
1836 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2578 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1837 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2579 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1838 } 2580 }
1839 2581
1840 assert (timermax >= timercnt); 2582 assert (timermax >= timercnt);
… …
1858#if EV_FORK_ENABLE 2600#if EV_FORK_ENABLE
1859 assert (forkmax >= forkcnt); 2601 assert (forkmax >= forkcnt);
1860 array_verify (EV_A_ (W *)forks, forkcnt); 2602 array_verify (EV_A_ (W *)forks, forkcnt);
1861#endif 2603#endif
1862 2604
2605#if EV_CLEANUP_ENABLE
2606 assert (cleanupmax >= cleanupcnt);
2607 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2608#endif
2609
1863#if EV_ASYNC_ENABLE 2610#if EV_ASYNC_ENABLE
1864 assert (asyncmax >= asynccnt); 2611 assert (asyncmax >= asynccnt);
1865 array_verify (EV_A_ (W *)asyncs, asynccnt); 2612 array_verify (EV_A_ (W *)asyncs, asynccnt);
1866#endif 2613#endif
1867 2614
2615#if EV_PREPARE_ENABLE
1868 assert (preparemax >= preparecnt); 2616 assert (preparemax >= preparecnt);
1869 array_verify (EV_A_ (W *)prepares, preparecnt); 2617 array_verify (EV_A_ (W *)prepares, preparecnt);
2618#endif
1870 2619
2620#if EV_CHECK_ENABLE
1871 assert (checkmax >= checkcnt); 2621 assert (checkmax >= checkcnt);
1872 array_verify (EV_A_ (W *)checks, checkcnt); 2622 array_verify (EV_A_ (W *)checks, checkcnt);
2623#endif
1873 2624
1874# if 0 2625# if 0
2626#if EV_CHILD_ENABLE
1875 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2627 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1876 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2628 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2629#endif
1877# endif 2630# endif
1878#endif 2631#endif
1879} 2632}
1880#endif 2633#endif
1881 2634
1882#if EV_MULTIPLICITY 2635#if EV_MULTIPLICITY
1883struct ev_loop * 2636struct ev_loop * ecb_cold
1884ev_default_loop_init (unsigned int flags)
1885#else 2637#else
1886int 2638int
2639#endif
1887ev_default_loop (unsigned int flags) 2640ev_default_loop (unsigned int flags) EV_THROW
1888#endif
1889{ 2641{
1890 if (!ev_default_loop_ptr) 2642 if (!ev_default_loop_ptr)
1891 { 2643 {
1892#if EV_MULTIPLICITY 2644#if EV_MULTIPLICITY
1893 EV_P = ev_default_loop_ptr = &default_loop_struct; 2645 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1897 2649
1898 loop_init (EV_A_ flags); 2650 loop_init (EV_A_ flags);
1899 2651
1900 if (ev_backend (EV_A)) 2652 if (ev_backend (EV_A))
1901 { 2653 {
1902#ifndef _WIN32 2654#if EV_CHILD_ENABLE
1903 ev_signal_init (&childev, childcb, SIGCHLD); 2655 ev_signal_init (&childev, childcb, SIGCHLD);
1904 ev_set_priority (&childev, EV_MAXPRI); 2656 ev_set_priority (&childev, EV_MAXPRI);
1905 ev_signal_start (EV_A_ &childev); 2657 ev_signal_start (EV_A_ &childev);
1906 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2658 ev_unref (EV_A); /* child watcher should not keep loop alive */
1907#endif 2659#endif
… …
1912 2664
1913 return ev_default_loop_ptr; 2665 return ev_default_loop_ptr;
1914} 2666}
1915 2667
1916void 2668void
1917ev_default_destroy (void) 2669ev_loop_fork (EV_P) EV_THROW
1918{ 2670{
1919#if EV_MULTIPLICITY
1920 EV_P = ev_default_loop_ptr;
1921#endif
1922
1923 ev_default_loop_ptr = 0;
1924
1925#ifndef _WIN32
1926 ev_ref (EV_A); /* child watcher */
1927 ev_signal_stop (EV_A_ &childev);
1928#endif
1929
1930 loop_destroy (EV_A);
1931}
1932
1933void
1934ev_default_fork (void)
1935{
1936#if EV_MULTIPLICITY
1937 EV_P = ev_default_loop_ptr;
1938#endif
1939
1940 postfork = 1; /* must be in line with ev_loop_fork */ 2671 postfork = 1; /* must be in line with ev_default_fork */
1941} 2672}
1942 2673
1943/*****************************************************************************/ 2674/*****************************************************************************/
1944 2675
1945void 2676void
… …
1947{ 2678{
1948 EV_CB_INVOKE ((W)w, revents); 2679 EV_CB_INVOKE ((W)w, revents);
1949} 2680}
1950 2681
1951unsigned int 2682unsigned int
1952ev_pending_count (EV_P) 2683ev_pending_count (EV_P) EV_THROW
1953{ 2684{
1954 int pri; 2685 int pri;
1955 unsigned int count = 0; 2686 unsigned int count = 0;
1956 2687
1957 for (pri = NUMPRI; pri--; ) 2688 for (pri = NUMPRI; pri--; )
… …
1961} 2692}
1962 2693
1963void noinline 2694void noinline
1964ev_invoke_pending (EV_P) 2695ev_invoke_pending (EV_P)
1965{ 2696{
1966 int pri; 2697 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1967
1968 for (pri = NUMPRI; pri--; )
1969 while (pendingcnt [pri]) 2698 while (pendingcnt [pendingpri])
1970 { 2699 {
1971 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2700 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1972
1973 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1974 /* ^ this is no longer true, as pending_w could be here */
1975 2701
1976 p->w->pending = 0; 2702 p->w->pending = 0;
1977 EV_CB_INVOKE (p->w, p->events); 2703 EV_CB_INVOKE (p->w, p->events);
1978 EV_FREQUENT_CHECK; 2704 EV_FREQUENT_CHECK;
1979 } 2705 }
… …
2036 EV_FREQUENT_CHECK; 2762 EV_FREQUENT_CHECK;
2037 feed_reverse (EV_A_ (W)w); 2763 feed_reverse (EV_A_ (W)w);
2038 } 2764 }
2039 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2765 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2040 2766
2041 feed_reverse_done (EV_A_ EV_TIMEOUT); 2767 feed_reverse_done (EV_A_ EV_TIMER);
2042 } 2768 }
2043} 2769}
2044 2770
2045#if EV_PERIODIC_ENABLE 2771#if EV_PERIODIC_ENABLE
2772
2773static void noinline
2774periodic_recalc (EV_P_ ev_periodic *w)
2775{
2776 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2777 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2778
2779 /* the above almost always errs on the low side */
2780 while (at <= ev_rt_now)
2781 {
2782 ev_tstamp nat = at + w->interval;
2783
2784 /* when resolution fails us, we use ev_rt_now */
2785 if (expect_false (nat == at))
2786 {
2787 at = ev_rt_now;
2788 break;
2789 }
2790
2791 at = nat;
2792 }
2793
2794 ev_at (w) = at;
2795}
2796
2046/* make periodics pending */ 2797/* make periodics pending */
2047inline_size void 2798inline_size void
2048periodics_reify (EV_P) 2799periodics_reify (EV_P)
2049{ 2800{
2050 EV_FREQUENT_CHECK; 2801 EV_FREQUENT_CHECK;
… …
2069 ANHE_at_cache (periodics [HEAP0]); 2820 ANHE_at_cache (periodics [HEAP0]);
2070 downheap (periodics, periodiccnt, HEAP0); 2821 downheap (periodics, periodiccnt, HEAP0);
2071 } 2822 }
2072 else if (w->interval) 2823 else if (w->interval)
2073 { 2824 {
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2825 periodic_recalc (EV_A_ w);
2075 /* if next trigger time is not sufficiently in the future, put it there */
2076 /* this might happen because of floating point inexactness */
2077 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2078 {
2079 ev_at (w) += w->interval;
2080
2081 /* if interval is unreasonably low we might still have a time in the past */
2082 /* so correct this. this will make the periodic very inexact, but the user */
2083 /* has effectively asked to get triggered more often than possible */
2084 if (ev_at (w) < ev_rt_now)
2085 ev_at (w) = ev_rt_now;
2086 }
2087
2088 ANHE_at_cache (periodics [HEAP0]); 2826 ANHE_at_cache (periodics [HEAP0]);
2089 downheap (periodics, periodiccnt, HEAP0); 2827 downheap (periodics, periodiccnt, HEAP0);
2090 } 2828 }
2091 else 2829 else
2092 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2830 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2099 feed_reverse_done (EV_A_ EV_PERIODIC); 2837 feed_reverse_done (EV_A_ EV_PERIODIC);
2100 } 2838 }
2101} 2839}
2102 2840
2103/* simply recalculate all periodics */ 2841/* simply recalculate all periodics */
2104/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2842/* TODO: maybe ensure that at least one event happens when jumping forward? */
2105static void noinline 2843static void noinline ecb_cold
2106periodics_reschedule (EV_P) 2844periodics_reschedule (EV_P)
2107{ 2845{
2108 int i; 2846 int i;
2109 2847
2110 /* adjust periodics after time jump */ 2848 /* adjust periodics after time jump */
… …
2113 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2851 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2114 2852
2115 if (w->reschedule_cb) 2853 if (w->reschedule_cb)
2116 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2854 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2117 else if (w->interval) 2855 else if (w->interval)
2118 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2856 periodic_recalc (EV_A_ w);
2119 2857
2120 ANHE_at_cache (periodics [i]); 2858 ANHE_at_cache (periodics [i]);
2121 } 2859 }
2122 2860
2123 reheap (periodics, periodiccnt); 2861 reheap (periodics, periodiccnt);
2124} 2862}
2125#endif 2863#endif
2126 2864
2127/* adjust all timers by a given offset */ 2865/* adjust all timers by a given offset */
2128static void noinline 2866static void noinline ecb_cold
2129timers_reschedule (EV_P_ ev_tstamp adjust) 2867timers_reschedule (EV_P_ ev_tstamp adjust)
2130{ 2868{
2131 int i; 2869 int i;
2132 2870
2133 for (i = 0; i < timercnt; ++i) 2871 for (i = 0; i < timercnt; ++i)
… …
2137 ANHE_at_cache (*he); 2875 ANHE_at_cache (*he);
2138 } 2876 }
2139} 2877}
2140 2878
2141/* fetch new monotonic and realtime times from the kernel */ 2879/* fetch new monotonic and realtime times from the kernel */
2142/* also detetc if there was a timejump, and act accordingly */ 2880/* also detect if there was a timejump, and act accordingly */
2143inline_speed void 2881inline_speed void
2144time_update (EV_P_ ev_tstamp max_block) 2882time_update (EV_P_ ev_tstamp max_block)
2145{ 2883{
2146#if EV_USE_MONOTONIC 2884#if EV_USE_MONOTONIC
2147 if (expect_true (have_monotonic)) 2885 if (expect_true (have_monotonic))
… …
2170 * doesn't hurt either as we only do this on time-jumps or 2908 * doesn't hurt either as we only do this on time-jumps or
2171 * in the unlikely event of having been preempted here. 2909 * in the unlikely event of having been preempted here.
2172 */ 2910 */
2173 for (i = 4; --i; ) 2911 for (i = 4; --i; )
2174 { 2912 {
2913 ev_tstamp diff;
2175 rtmn_diff = ev_rt_now - mn_now; 2914 rtmn_diff = ev_rt_now - mn_now;
2176 2915
2916 diff = odiff - rtmn_diff;
2917
2177 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2918 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2178 return; /* all is well */ 2919 return; /* all is well */
2179 2920
2180 ev_rt_now = ev_time (); 2921 ev_rt_now = ev_time ();
2181 mn_now = get_clock (); 2922 mn_now = get_clock ();
2182 now_floor = mn_now; 2923 now_floor = mn_now;
… …
2204 2945
2205 mn_now = ev_rt_now; 2946 mn_now = ev_rt_now;
2206 } 2947 }
2207} 2948}
2208 2949
2209void 2950int
2210ev_loop (EV_P_ int flags) 2951ev_run (EV_P_ int flags)
2211{ 2952{
2212#if EV_MINIMAL < 2 2953#if EV_FEATURE_API
2213 ++loop_depth; 2954 ++loop_depth;
2214#endif 2955#endif
2215 2956
2216 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2957 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2217 2958
2218 loop_done = EVUNLOOP_CANCEL; 2959 loop_done = EVBREAK_CANCEL;
2219 2960
2220 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2961 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2221 2962
2222 do 2963 do
2223 { 2964 {
2224#if EV_VERIFY >= 2 2965#if EV_VERIFY >= 2
2225 ev_loop_verify (EV_A); 2966 ev_verify (EV_A);
2226#endif 2967#endif
2227 2968
2228#ifndef _WIN32 2969#ifndef _WIN32
2229 if (expect_false (curpid)) /* penalise the forking check even more */ 2970 if (expect_false (curpid)) /* penalise the forking check even more */
2230 if (expect_false (getpid () != curpid)) 2971 if (expect_false (getpid () != curpid))
… …
2242 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2983 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2243 EV_INVOKE_PENDING; 2984 EV_INVOKE_PENDING;
2244 } 2985 }
2245#endif 2986#endif
2246 2987
2988#if EV_PREPARE_ENABLE
2247 /* queue prepare watchers (and execute them) */ 2989 /* queue prepare watchers (and execute them) */
2248 if (expect_false (preparecnt)) 2990 if (expect_false (preparecnt))
2249 { 2991 {
2250 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2992 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2251 EV_INVOKE_PENDING; 2993 EV_INVOKE_PENDING;
2252 } 2994 }
2995#endif
2253 2996
2254 if (expect_false (loop_done)) 2997 if (expect_false (loop_done))
2255 break; 2998 break;
2256 2999
2257 /* we might have forked, so reify kernel state if necessary */ 3000 /* we might have forked, so reify kernel state if necessary */
… …
2264 /* calculate blocking time */ 3007 /* calculate blocking time */
2265 { 3008 {
2266 ev_tstamp waittime = 0.; 3009 ev_tstamp waittime = 0.;
2267 ev_tstamp sleeptime = 0.; 3010 ev_tstamp sleeptime = 0.;
2268 3011
3012 /* remember old timestamp for io_blocktime calculation */
3013 ev_tstamp prev_mn_now = mn_now;
3014
3015 /* update time to cancel out callback processing overhead */
3016 time_update (EV_A_ 1e100);
3017
3018 /* from now on, we want a pipe-wake-up */
3019 pipe_write_wanted = 1;
3020
3021 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3022
2269 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3023 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2270 { 3024 {
2271 /* remember old timestamp for io_blocktime calculation */
2272 ev_tstamp prev_mn_now = mn_now;
2273
2274 /* update time to cancel out callback processing overhead */
2275 time_update (EV_A_ 1e100);
2276
2277 waittime = MAX_BLOCKTIME; 3025 waittime = MAX_BLOCKTIME;
2278 3026
2279 if (timercnt) 3027 if (timercnt)
2280 { 3028 {
2281 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3029 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2282 if (waittime > to) waittime = to; 3030 if (waittime > to) waittime = to;
2283 } 3031 }
2284 3032
2285#if EV_PERIODIC_ENABLE 3033#if EV_PERIODIC_ENABLE
2286 if (periodiccnt) 3034 if (periodiccnt)
2287 { 3035 {
2288 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3036 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2289 if (waittime > to) waittime = to; 3037 if (waittime > to) waittime = to;
2290 } 3038 }
2291#endif 3039#endif
2292 3040
2293 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3041 /* don't let timeouts decrease the waittime below timeout_blocktime */
2294 if (expect_false (waittime < timeout_blocktime)) 3042 if (expect_false (waittime < timeout_blocktime))
2295 waittime = timeout_blocktime; 3043 waittime = timeout_blocktime;
3044
3045 /* at this point, we NEED to wait, so we have to ensure */
3046 /* to pass a minimum nonzero value to the backend */
3047 if (expect_false (waittime < backend_mintime))
3048 waittime = backend_mintime;
2296 3049
2297 /* extra check because io_blocktime is commonly 0 */ 3050 /* extra check because io_blocktime is commonly 0 */
2298 if (expect_false (io_blocktime)) 3051 if (expect_false (io_blocktime))
2299 { 3052 {
2300 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3053 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2301 3054
2302 if (sleeptime > waittime - backend_fudge) 3055 if (sleeptime > waittime - backend_mintime)
2303 sleeptime = waittime - backend_fudge; 3056 sleeptime = waittime - backend_mintime;
2304 3057
2305 if (expect_true (sleeptime > 0.)) 3058 if (expect_true (sleeptime > 0.))
2306 { 3059 {
2307 ev_sleep (sleeptime); 3060 ev_sleep (sleeptime);
2308 waittime -= sleeptime; 3061 waittime -= sleeptime;
2309 } 3062 }
2310 } 3063 }
2311 } 3064 }
2312 3065
2313#if EV_MINIMAL < 2 3066#if EV_FEATURE_API
2314 ++loop_count; 3067 ++loop_count;
2315#endif 3068#endif
2316 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3069 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2317 backend_poll (EV_A_ waittime); 3070 backend_poll (EV_A_ waittime);
2318 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3071 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3072
3073 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3074
3075 if (pipe_write_skipped)
3076 {
3077 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3078 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3079 }
3080
2319 3081
2320 /* update ev_rt_now, do magic */ 3082 /* update ev_rt_now, do magic */
2321 time_update (EV_A_ waittime + sleeptime); 3083 time_update (EV_A_ waittime + sleeptime);
2322 } 3084 }
2323 3085
… …
2330#if EV_IDLE_ENABLE 3092#if EV_IDLE_ENABLE
2331 /* queue idle watchers unless other events are pending */ 3093 /* queue idle watchers unless other events are pending */
2332 idle_reify (EV_A); 3094 idle_reify (EV_A);
2333#endif 3095#endif
2334 3096
3097#if EV_CHECK_ENABLE
2335 /* queue check watchers, to be executed first */ 3098 /* queue check watchers, to be executed first */
2336 if (expect_false (checkcnt)) 3099 if (expect_false (checkcnt))
2337 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3100 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3101#endif
2338 3102
2339 EV_INVOKE_PENDING; 3103 EV_INVOKE_PENDING;
2340 } 3104 }
2341 while (expect_true ( 3105 while (expect_true (
2342 activecnt 3106 activecnt
2343 && !loop_done 3107 && !loop_done
2344 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3108 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2345 )); 3109 ));
2346 3110
2347 if (loop_done == EVUNLOOP_ONE) 3111 if (loop_done == EVBREAK_ONE)
2348 loop_done = EVUNLOOP_CANCEL; 3112 loop_done = EVBREAK_CANCEL;
2349 3113
2350#if EV_MINIMAL < 2 3114#if EV_FEATURE_API
2351 --loop_depth; 3115 --loop_depth;
2352#endif 3116#endif
3117
3118 return activecnt;
2353} 3119}
2354 3120
2355void 3121void
2356ev_unloop (EV_P_ int how) 3122ev_break (EV_P_ int how) EV_THROW
2357{ 3123{
2358 loop_done = how; 3124 loop_done = how;
2359} 3125}
2360 3126
2361void 3127void
2362ev_ref (EV_P) 3128ev_ref (EV_P) EV_THROW
2363{ 3129{
2364 ++activecnt; 3130 ++activecnt;
2365} 3131}
2366 3132
2367void 3133void
2368ev_unref (EV_P) 3134ev_unref (EV_P) EV_THROW
2369{ 3135{
2370 --activecnt; 3136 --activecnt;
2371} 3137}
2372 3138
2373void 3139void
2374ev_now_update (EV_P) 3140ev_now_update (EV_P) EV_THROW
2375{ 3141{
2376 time_update (EV_A_ 1e100); 3142 time_update (EV_A_ 1e100);
2377} 3143}
2378 3144
2379void 3145void
2380ev_suspend (EV_P) 3146ev_suspend (EV_P) EV_THROW
2381{ 3147{
2382 ev_now_update (EV_A); 3148 ev_now_update (EV_A);
2383} 3149}
2384 3150
2385void 3151void
2386ev_resume (EV_P) 3152ev_resume (EV_P) EV_THROW
2387{ 3153{
2388 ev_tstamp mn_prev = mn_now; 3154 ev_tstamp mn_prev = mn_now;
2389 3155
2390 ev_now_update (EV_A); 3156 ev_now_update (EV_A);
2391 timers_reschedule (EV_A_ mn_now - mn_prev); 3157 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2430 w->pending = 0; 3196 w->pending = 0;
2431 } 3197 }
2432} 3198}
2433 3199
2434int 3200int
2435ev_clear_pending (EV_P_ void *w) 3201ev_clear_pending (EV_P_ void *w) EV_THROW
2436{ 3202{
2437 W w_ = (W)w; 3203 W w_ = (W)w;
2438 int pending = w_->pending; 3204 int pending = w_->pending;
2439 3205
2440 if (expect_true (pending)) 3206 if (expect_true (pending))
… …
2473} 3239}
2474 3240
2475/*****************************************************************************/ 3241/*****************************************************************************/
2476 3242
2477void noinline 3243void noinline
2478ev_io_start (EV_P_ ev_io *w) 3244ev_io_start (EV_P_ ev_io *w) EV_THROW
2479{ 3245{
2480 int fd = w->fd; 3246 int fd = w->fd;
2481 3247
2482 if (expect_false (ev_is_active (w))) 3248 if (expect_false (ev_is_active (w)))
2483 return; 3249 return;
2484 3250
2485 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3251 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2486 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3252 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2487 3253
2488 EV_FREQUENT_CHECK; 3254 EV_FREQUENT_CHECK;
2489 3255
2490 ev_start (EV_A_ (W)w, 1); 3256 ev_start (EV_A_ (W)w, 1);
2491 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3257 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2492 wlist_add (&anfds[fd].head, (WL)w); 3258 wlist_add (&anfds[fd].head, (WL)w);
2493 3259
3260 /* common bug, apparently */
3261 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3262
2494 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3263 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2495 w->events &= ~EV__IOFDSET; 3264 w->events &= ~EV__IOFDSET;
2496 3265
2497 EV_FREQUENT_CHECK; 3266 EV_FREQUENT_CHECK;
2498} 3267}
2499 3268
2500void noinline 3269void noinline
2501ev_io_stop (EV_P_ ev_io *w) 3270ev_io_stop (EV_P_ ev_io *w) EV_THROW
2502{ 3271{
2503 clear_pending (EV_A_ (W)w); 3272 clear_pending (EV_A_ (W)w);
2504 if (expect_false (!ev_is_active (w))) 3273 if (expect_false (!ev_is_active (w)))
2505 return; 3274 return;
2506 3275
… …
2509 EV_FREQUENT_CHECK; 3278 EV_FREQUENT_CHECK;
2510 3279
2511 wlist_del (&anfds[w->fd].head, (WL)w); 3280 wlist_del (&anfds[w->fd].head, (WL)w);
2512 ev_stop (EV_A_ (W)w); 3281 ev_stop (EV_A_ (W)w);
2513 3282
2514 fd_change (EV_A_ w->fd, 1); 3283 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2515 3284
2516 EV_FREQUENT_CHECK; 3285 EV_FREQUENT_CHECK;
2517} 3286}
2518 3287
2519void noinline 3288void noinline
2520ev_timer_start (EV_P_ ev_timer *w) 3289ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2521{ 3290{
2522 if (expect_false (ev_is_active (w))) 3291 if (expect_false (ev_is_active (w)))
2523 return; 3292 return;
2524 3293
2525 ev_at (w) += mn_now; 3294 ev_at (w) += mn_now;
… …
2539 3308
2540 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3309 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2541} 3310}
2542 3311
2543void noinline 3312void noinline
2544ev_timer_stop (EV_P_ ev_timer *w) 3313ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2545{ 3314{
2546 clear_pending (EV_A_ (W)w); 3315 clear_pending (EV_A_ (W)w);
2547 if (expect_false (!ev_is_active (w))) 3316 if (expect_false (!ev_is_active (w)))
2548 return; 3317 return;
2549 3318
… …
2561 timers [active] = timers [timercnt + HEAP0]; 3330 timers [active] = timers [timercnt + HEAP0];
2562 adjustheap (timers, timercnt, active); 3331 adjustheap (timers, timercnt, active);
2563 } 3332 }
2564 } 3333 }
2565 3334
2566 EV_FREQUENT_CHECK;
2567
2568 ev_at (w) -= mn_now; 3335 ev_at (w) -= mn_now;
2569 3336
2570 ev_stop (EV_A_ (W)w); 3337 ev_stop (EV_A_ (W)w);
3338
3339 EV_FREQUENT_CHECK;
2571} 3340}
2572 3341
2573void noinline 3342void noinline
2574ev_timer_again (EV_P_ ev_timer *w) 3343ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2575{ 3344{
2576 EV_FREQUENT_CHECK; 3345 EV_FREQUENT_CHECK;
3346
3347 clear_pending (EV_A_ (W)w);
2577 3348
2578 if (ev_is_active (w)) 3349 if (ev_is_active (w))
2579 { 3350 {
2580 if (w->repeat) 3351 if (w->repeat)
2581 { 3352 {
… …
2594 3365
2595 EV_FREQUENT_CHECK; 3366 EV_FREQUENT_CHECK;
2596} 3367}
2597 3368
2598ev_tstamp 3369ev_tstamp
2599ev_timer_remaining (EV_P_ ev_timer *w) 3370ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2600{ 3371{
2601 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3372 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2602} 3373}
2603 3374
2604#if EV_PERIODIC_ENABLE 3375#if EV_PERIODIC_ENABLE
2605void noinline 3376void noinline
2606ev_periodic_start (EV_P_ ev_periodic *w) 3377ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2607{ 3378{
2608 if (expect_false (ev_is_active (w))) 3379 if (expect_false (ev_is_active (w)))
2609 return; 3380 return;
2610 3381
2611 if (w->reschedule_cb) 3382 if (w->reschedule_cb)
2612 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3383 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2613 else if (w->interval) 3384 else if (w->interval)
2614 { 3385 {
2615 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3386 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2616 /* this formula differs from the one in periodic_reify because we do not always round up */ 3387 periodic_recalc (EV_A_ w);
2617 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2618 } 3388 }
2619 else 3389 else
2620 ev_at (w) = w->offset; 3390 ev_at (w) = w->offset;
2621 3391
2622 EV_FREQUENT_CHECK; 3392 EV_FREQUENT_CHECK;
… …
2632 3402
2633 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3403 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2634} 3404}
2635 3405
2636void noinline 3406void noinline
2637ev_periodic_stop (EV_P_ ev_periodic *w) 3407ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2638{ 3408{
2639 clear_pending (EV_A_ (W)w); 3409 clear_pending (EV_A_ (W)w);
2640 if (expect_false (!ev_is_active (w))) 3410 if (expect_false (!ev_is_active (w)))
2641 return; 3411 return;
2642 3412
… …
2654 periodics [active] = periodics [periodiccnt + HEAP0]; 3424 periodics [active] = periodics [periodiccnt + HEAP0];
2655 adjustheap (periodics, periodiccnt, active); 3425 adjustheap (periodics, periodiccnt, active);
2656 } 3426 }
2657 } 3427 }
2658 3428
2659 EV_FREQUENT_CHECK;
2660
2661 ev_stop (EV_A_ (W)w); 3429 ev_stop (EV_A_ (W)w);
3430
3431 EV_FREQUENT_CHECK;
2662} 3432}
2663 3433
2664void noinline 3434void noinline
2665ev_periodic_again (EV_P_ ev_periodic *w) 3435ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2666{ 3436{
2667 /* TODO: use adjustheap and recalculation */ 3437 /* TODO: use adjustheap and recalculation */
2668 ev_periodic_stop (EV_A_ w); 3438 ev_periodic_stop (EV_A_ w);
2669 ev_periodic_start (EV_A_ w); 3439 ev_periodic_start (EV_A_ w);
2670} 3440}
… …
2672 3442
2673#ifndef SA_RESTART 3443#ifndef SA_RESTART
2674# define SA_RESTART 0 3444# define SA_RESTART 0
2675#endif 3445#endif
2676 3446
3447#if EV_SIGNAL_ENABLE
3448
2677void noinline 3449void noinline
2678ev_signal_start (EV_P_ ev_signal *w) 3450ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2679{ 3451{
2680 if (expect_false (ev_is_active (w))) 3452 if (expect_false (ev_is_active (w)))
2681 return; 3453 return;
2682 3454
2683 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3455 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2727 if (!((WL)w)->next) 3499 if (!((WL)w)->next)
2728# if EV_USE_SIGNALFD 3500# if EV_USE_SIGNALFD
2729 if (sigfd < 0) /*TODO*/ 3501 if (sigfd < 0) /*TODO*/
2730# endif 3502# endif
2731 { 3503 {
2732# if _WIN32 3504# ifdef _WIN32
3505 evpipe_init (EV_A);
3506
2733 signal (w->signum, ev_sighandler); 3507 signal (w->signum, ev_sighandler);
2734# else 3508# else
2735 struct sigaction sa; 3509 struct sigaction sa;
2736 3510
2737 evpipe_init (EV_A); 3511 evpipe_init (EV_A);
… …
2739 sa.sa_handler = ev_sighandler; 3513 sa.sa_handler = ev_sighandler;
2740 sigfillset (&sa.sa_mask); 3514 sigfillset (&sa.sa_mask);
2741 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3515 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2742 sigaction (w->signum, &sa, 0); 3516 sigaction (w->signum, &sa, 0);
2743 3517
3518 if (origflags & EVFLAG_NOSIGMASK)
3519 {
2744 sigemptyset (&sa.sa_mask); 3520 sigemptyset (&sa.sa_mask);
2745 sigaddset (&sa.sa_mask, w->signum); 3521 sigaddset (&sa.sa_mask, w->signum);
2746 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3522 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3523 }
2747#endif 3524#endif
2748 } 3525 }
2749 3526
2750 EV_FREQUENT_CHECK; 3527 EV_FREQUENT_CHECK;
2751} 3528}
2752 3529
2753void noinline 3530void noinline
2754ev_signal_stop (EV_P_ ev_signal *w) 3531ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2755{ 3532{
2756 clear_pending (EV_A_ (W)w); 3533 clear_pending (EV_A_ (W)w);
2757 if (expect_false (!ev_is_active (w))) 3534 if (expect_false (!ev_is_active (w)))
2758 return; 3535 return;
2759 3536
… …
2768 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3545 signals [w->signum - 1].loop = 0; /* unattach from signal */
2769#endif 3546#endif
2770#if EV_USE_SIGNALFD 3547#if EV_USE_SIGNALFD
2771 if (sigfd >= 0) 3548 if (sigfd >= 0)
2772 { 3549 {
2773 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3550 sigset_t ss;
3551
3552 sigemptyset (&ss);
3553 sigaddset (&ss, w->signum);
2774 sigdelset (&sigfd_set, w->signum); 3554 sigdelset (&sigfd_set, w->signum);
3555
2775 signalfd (sigfd, &sigfd_set, 0); 3556 signalfd (sigfd, &sigfd_set, 0);
2776 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3557 sigprocmask (SIG_UNBLOCK, &ss, 0);
2777 /*TODO: maybe unblock signal? */
2778 } 3558 }
2779 else 3559 else
2780#endif 3560#endif
2781 signal (w->signum, SIG_DFL); 3561 signal (w->signum, SIG_DFL);
2782 } 3562 }
2783 3563
2784 EV_FREQUENT_CHECK; 3564 EV_FREQUENT_CHECK;
2785} 3565}
2786 3566
3567#endif
3568
3569#if EV_CHILD_ENABLE
3570
2787void 3571void
2788ev_child_start (EV_P_ ev_child *w) 3572ev_child_start (EV_P_ ev_child *w) EV_THROW
2789{ 3573{
2790#if EV_MULTIPLICITY 3574#if EV_MULTIPLICITY
2791 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3575 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2792#endif 3576#endif
2793 if (expect_false (ev_is_active (w))) 3577 if (expect_false (ev_is_active (w)))
2794 return; 3578 return;
2795 3579
2796 EV_FREQUENT_CHECK; 3580 EV_FREQUENT_CHECK;
2797 3581
2798 ev_start (EV_A_ (W)w, 1); 3582 ev_start (EV_A_ (W)w, 1);
2799 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3583 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2800 3584
2801 EV_FREQUENT_CHECK; 3585 EV_FREQUENT_CHECK;
2802} 3586}
2803 3587
2804void 3588void
2805ev_child_stop (EV_P_ ev_child *w) 3589ev_child_stop (EV_P_ ev_child *w) EV_THROW
2806{ 3590{
2807 clear_pending (EV_A_ (W)w); 3591 clear_pending (EV_A_ (W)w);
2808 if (expect_false (!ev_is_active (w))) 3592 if (expect_false (!ev_is_active (w)))
2809 return; 3593 return;
2810 3594
2811 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
2812 3596
2813 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3597 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2814 ev_stop (EV_A_ (W)w); 3598 ev_stop (EV_A_ (W)w);
2815 3599
2816 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
2817} 3601}
3602
3603#endif
2818 3604
2819#if EV_STAT_ENABLE 3605#if EV_STAT_ENABLE
2820 3606
2821# ifdef _WIN32 3607# ifdef _WIN32
2822# undef lstat 3608# undef lstat
… …
2828#define MIN_STAT_INTERVAL 0.1074891 3614#define MIN_STAT_INTERVAL 0.1074891
2829 3615
2830static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3616static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2831 3617
2832#if EV_USE_INOTIFY 3618#if EV_USE_INOTIFY
2833# define EV_INOTIFY_BUFSIZE 8192 3619
3620/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3621# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2834 3622
2835static void noinline 3623static void noinline
2836infy_add (EV_P_ ev_stat *w) 3624infy_add (EV_P_ ev_stat *w)
2837{ 3625{
2838 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); 3626 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);
2839 3627
2840 if (w->wd < 0) 3628 if (w->wd >= 0)
3629 {
3630 struct statfs sfs;
3631
3632 /* now local changes will be tracked by inotify, but remote changes won't */
3633 /* unless the filesystem is known to be local, we therefore still poll */
3634 /* also do poll on <2.6.25, but with normal frequency */
3635
3636 if (!fs_2625)
3637 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3638 else if (!statfs (w->path, &sfs)
3639 && (sfs.f_type == 0x1373 /* devfs */
3640 || sfs.f_type == 0xEF53 /* ext2/3 */
3641 || sfs.f_type == 0x3153464a /* jfs */
3642 || sfs.f_type == 0x52654973 /* reiser3 */
3643 || sfs.f_type == 0x01021994 /* tempfs */
3644 || sfs.f_type == 0x58465342 /* xfs */))
3645 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3646 else
3647 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2841 { 3648 }
3649 else
3650 {
3651 /* can't use inotify, continue to stat */
2842 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3652 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2843 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2844 3653
2845 /* monitor some parent directory for speedup hints */ 3654 /* if path is not there, monitor some parent directory for speedup hints */
2846 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3655 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2847 /* but an efficiency issue only */ 3656 /* but an efficiency issue only */
2848 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3657 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2849 { 3658 {
2850 char path [4096]; 3659 char path [4096];
… …
2860 if (!pend || pend == path) 3669 if (!pend || pend == path)
2861 break; 3670 break;
2862 3671
2863 *pend = 0; 3672 *pend = 0;
2864 w->wd = inotify_add_watch (fs_fd, path, mask); 3673 w->wd = inotify_add_watch (fs_fd, path, mask);
2865 } 3674 }
2866 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2867 } 3676 }
2868 } 3677 }
2869 3678
2870 if (w->wd >= 0) 3679 if (w->wd >= 0)
2871 {
2872 struct statfs sfs;
2873
2874 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3680 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2875 3681
2876 /* now local changes will be tracked by inotify, but remote changes won't */ 3682 /* now re-arm timer, if required */
2877 /* unless the filesystem it known to be local, we therefore still poll */ 3683 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2878 /* also do poll on <2.6.25, but with normal frequency */
2879
2880 if (fs_2625 && !statfs (w->path, &sfs))
2881 if (sfs.f_type == 0x1373 /* devfs */
2882 || sfs.f_type == 0xEF53 /* ext2/3 */
2883 || sfs.f_type == 0x3153464a /* jfs */
2884 || sfs.f_type == 0x52654973 /* reiser3 */
2885 || sfs.f_type == 0x01021994 /* tempfs */
2886 || sfs.f_type == 0x58465342 /* xfs */)
2887 return;
2888
2889 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2890 ev_timer_again (EV_A_ &w->timer); 3684 ev_timer_again (EV_A_ &w->timer);
2891 } 3685 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2892} 3686}
2893 3687
2894static void noinline 3688static void noinline
2895infy_del (EV_P_ ev_stat *w) 3689infy_del (EV_P_ ev_stat *w)
2896{ 3690{
… …
2899 3693
2900 if (wd < 0) 3694 if (wd < 0)
2901 return; 3695 return;
2902 3696
2903 w->wd = -2; 3697 w->wd = -2;
2904 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3698 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2905 wlist_del (&fs_hash [slot].head, (WL)w); 3699 wlist_del (&fs_hash [slot].head, (WL)w);
2906 3700
2907 /* remove this watcher, if others are watching it, they will rearm */ 3701 /* remove this watcher, if others are watching it, they will rearm */
2908 inotify_rm_watch (fs_fd, wd); 3702 inotify_rm_watch (fs_fd, wd);
2909} 3703}
… …
2911static void noinline 3705static void noinline
2912infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3706infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2913{ 3707{
2914 if (slot < 0) 3708 if (slot < 0)
2915 /* overflow, need to check for all hash slots */ 3709 /* overflow, need to check for all hash slots */
2916 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3710 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2917 infy_wd (EV_A_ slot, wd, ev); 3711 infy_wd (EV_A_ slot, wd, ev);
2918 else 3712 else
2919 { 3713 {
2920 WL w_; 3714 WL w_;
2921 3715
2922 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3716 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2923 { 3717 {
2924 ev_stat *w = (ev_stat *)w_; 3718 ev_stat *w = (ev_stat *)w_;
2925 w_ = w_->next; /* lets us remove this watcher and all before it */ 3719 w_ = w_->next; /* lets us remove this watcher and all before it */
2926 3720
2927 if (w->wd == wd || wd == -1) 3721 if (w->wd == wd || wd == -1)
2928 { 3722 {
2929 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3723 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2930 { 3724 {
2931 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3725 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2932 w->wd = -1; 3726 w->wd = -1;
2933 infy_add (EV_A_ w); /* re-add, no matter what */ 3727 infy_add (EV_A_ w); /* re-add, no matter what */
2934 } 3728 }
2935 3729
2936 stat_timer_cb (EV_A_ &w->timer, 0); 3730 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2941 3735
2942static void 3736static void
2943infy_cb (EV_P_ ev_io *w, int revents) 3737infy_cb (EV_P_ ev_io *w, int revents)
2944{ 3738{
2945 char buf [EV_INOTIFY_BUFSIZE]; 3739 char buf [EV_INOTIFY_BUFSIZE];
2946 struct inotify_event *ev = (struct inotify_event *)buf;
2947 int ofs; 3740 int ofs;
2948 int len = read (fs_fd, buf, sizeof (buf)); 3741 int len = read (fs_fd, buf, sizeof (buf));
2949 3742
2950 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3743 for (ofs = 0; ofs < len; )
3744 {
3745 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2951 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3746 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3747 ofs += sizeof (struct inotify_event) + ev->len;
3748 }
2952} 3749}
2953 3750
2954inline_size void 3751inline_size void ecb_cold
2955check_2625 (EV_P) 3752ev_check_2625 (EV_P)
2956{ 3753{
2957 /* kernels < 2.6.25 are borked 3754 /* kernels < 2.6.25 are borked
2958 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3755 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2959 */ 3756 */
2960 struct utsname buf; 3757 if (ev_linux_version () < 0x020619)
2961 int major, minor, micro;
2962
2963 if (uname (&buf))
2964 return; 3758 return;
2965 3759
2966 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2967 return;
2968
2969 if (major < 2
2970 || (major == 2 && minor < 6)
2971 || (major == 2 && minor == 6 && micro < 25))
2972 return;
2973
2974 fs_2625 = 1; 3760 fs_2625 = 1;
3761}
3762
3763inline_size int
3764infy_newfd (void)
3765{
3766#if defined IN_CLOEXEC && defined IN_NONBLOCK
3767 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3768 if (fd >= 0)
3769 return fd;
3770#endif
3771 return inotify_init ();
2975} 3772}
2976 3773
2977inline_size void 3774inline_size void
2978infy_init (EV_P) 3775infy_init (EV_P)
2979{ 3776{
2980 if (fs_fd != -2) 3777 if (fs_fd != -2)
2981 return; 3778 return;
2982 3779
2983 fs_fd = -1; 3780 fs_fd = -1;
2984 3781
2985 check_2625 (EV_A); 3782 ev_check_2625 (EV_A);
2986 3783
2987 fs_fd = inotify_init (); 3784 fs_fd = infy_newfd ();
2988 3785
2989 if (fs_fd >= 0) 3786 if (fs_fd >= 0)
2990 { 3787 {
3788 fd_intern (fs_fd);
2991 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3789 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2992 ev_set_priority (&fs_w, EV_MAXPRI); 3790 ev_set_priority (&fs_w, EV_MAXPRI);
2993 ev_io_start (EV_A_ &fs_w); 3791 ev_io_start (EV_A_ &fs_w);
3792 ev_unref (EV_A);
2994 } 3793 }
2995} 3794}
2996 3795
2997inline_size void 3796inline_size void
2998infy_fork (EV_P) 3797infy_fork (EV_P)
… …
3000 int slot; 3799 int slot;
3001 3800
3002 if (fs_fd < 0) 3801 if (fs_fd < 0)
3003 return; 3802 return;
3004 3803
3804 ev_ref (EV_A);
3805 ev_io_stop (EV_A_ &fs_w);
3005 close (fs_fd); 3806 close (fs_fd);
3006 fs_fd = inotify_init (); 3807 fs_fd = infy_newfd ();
3007 3808
3809 if (fs_fd >= 0)
3810 {
3811 fd_intern (fs_fd);
3812 ev_io_set (&fs_w, fs_fd, EV_READ);
3813 ev_io_start (EV_A_ &fs_w);
3814 ev_unref (EV_A);
3815 }
3816
3008 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3817 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3009 { 3818 {
3010 WL w_ = fs_hash [slot].head; 3819 WL w_ = fs_hash [slot].head;
3011 fs_hash [slot].head = 0; 3820 fs_hash [slot].head = 0;
3012 3821
3013 while (w_) 3822 while (w_)
… …
3018 w->wd = -1; 3827 w->wd = -1;
3019 3828
3020 if (fs_fd >= 0) 3829 if (fs_fd >= 0)
3021 infy_add (EV_A_ w); /* re-add, no matter what */ 3830 infy_add (EV_A_ w); /* re-add, no matter what */
3022 else 3831 else
3832 {
3833 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3834 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3023 ev_timer_again (EV_A_ &w->timer); 3835 ev_timer_again (EV_A_ &w->timer);
3836 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3837 }
3024 } 3838 }
3025 } 3839 }
3026} 3840}
3027 3841
3028#endif 3842#endif
… …
3032#else 3846#else
3033# define EV_LSTAT(p,b) lstat (p, b) 3847# define EV_LSTAT(p,b) lstat (p, b)
3034#endif 3848#endif
3035 3849
3036void 3850void
3037ev_stat_stat (EV_P_ ev_stat *w) 3851ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3038{ 3852{
3039 if (lstat (w->path, &w->attr) < 0) 3853 if (lstat (w->path, &w->attr) < 0)
3040 w->attr.st_nlink = 0; 3854 w->attr.st_nlink = 0;
3041 else if (!w->attr.st_nlink) 3855 else if (!w->attr.st_nlink)
3042 w->attr.st_nlink = 1; 3856 w->attr.st_nlink = 1;
… …
3045static void noinline 3859static void noinline
3046stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3860stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3047{ 3861{
3048 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3862 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3049 3863
3050 /* we copy this here each the time so that */ 3864 ev_statdata prev = w->attr;
3051 /* prev has the old value when the callback gets invoked */
3052 w->prev = w->attr;
3053 ev_stat_stat (EV_A_ w); 3865 ev_stat_stat (EV_A_ w);
3054 3866
3055 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3867 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3056 if ( 3868 if (
3057 w->prev.st_dev != w->attr.st_dev 3869 prev.st_dev != w->attr.st_dev
3058 || w->prev.st_ino != w->attr.st_ino 3870 || prev.st_ino != w->attr.st_ino
3059 || w->prev.st_mode != w->attr.st_mode 3871 || prev.st_mode != w->attr.st_mode
3060 || w->prev.st_nlink != w->attr.st_nlink 3872 || prev.st_nlink != w->attr.st_nlink
3061 || w->prev.st_uid != w->attr.st_uid 3873 || prev.st_uid != w->attr.st_uid
3062 || w->prev.st_gid != w->attr.st_gid 3874 || prev.st_gid != w->attr.st_gid
3063 || w->prev.st_rdev != w->attr.st_rdev 3875 || prev.st_rdev != w->attr.st_rdev
3064 || w->prev.st_size != w->attr.st_size 3876 || prev.st_size != w->attr.st_size
3065 || w->prev.st_atime != w->attr.st_atime 3877 || prev.st_atime != w->attr.st_atime
3066 || w->prev.st_mtime != w->attr.st_mtime 3878 || prev.st_mtime != w->attr.st_mtime
3067 || w->prev.st_ctime != w->attr.st_ctime 3879 || prev.st_ctime != w->attr.st_ctime
3068 ) { 3880 ) {
3881 /* we only update w->prev on actual differences */
3882 /* in case we test more often than invoke the callback, */
3883 /* to ensure that prev is always different to attr */
3884 w->prev = prev;
3885
3069 #if EV_USE_INOTIFY 3886 #if EV_USE_INOTIFY
3070 if (fs_fd >= 0) 3887 if (fs_fd >= 0)
3071 { 3888 {
3072 infy_del (EV_A_ w); 3889 infy_del (EV_A_ w);
3073 infy_add (EV_A_ w); 3890 infy_add (EV_A_ w);
… …
3078 ev_feed_event (EV_A_ w, EV_STAT); 3895 ev_feed_event (EV_A_ w, EV_STAT);
3079 } 3896 }
3080} 3897}
3081 3898
3082void 3899void
3083ev_stat_start (EV_P_ ev_stat *w) 3900ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3084{ 3901{
3085 if (expect_false (ev_is_active (w))) 3902 if (expect_false (ev_is_active (w)))
3086 return; 3903 return;
3087 3904
3088 ev_stat_stat (EV_A_ w); 3905 ev_stat_stat (EV_A_ w);
… …
3098 3915
3099 if (fs_fd >= 0) 3916 if (fs_fd >= 0)
3100 infy_add (EV_A_ w); 3917 infy_add (EV_A_ w);
3101 else 3918 else
3102#endif 3919#endif
3920 {
3103 ev_timer_again (EV_A_ &w->timer); 3921 ev_timer_again (EV_A_ &w->timer);
3922 ev_unref (EV_A);
3923 }
3104 3924
3105 ev_start (EV_A_ (W)w, 1); 3925 ev_start (EV_A_ (W)w, 1);
3106 3926
3107 EV_FREQUENT_CHECK; 3927 EV_FREQUENT_CHECK;
3108} 3928}
3109 3929
3110void 3930void
3111ev_stat_stop (EV_P_ ev_stat *w) 3931ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3112{ 3932{
3113 clear_pending (EV_A_ (W)w); 3933 clear_pending (EV_A_ (W)w);
3114 if (expect_false (!ev_is_active (w))) 3934 if (expect_false (!ev_is_active (w)))
3115 return; 3935 return;
3116 3936
3117 EV_FREQUENT_CHECK; 3937 EV_FREQUENT_CHECK;
3118 3938
3119#if EV_USE_INOTIFY 3939#if EV_USE_INOTIFY
3120 infy_del (EV_A_ w); 3940 infy_del (EV_A_ w);
3121#endif 3941#endif
3942
3943 if (ev_is_active (&w->timer))
3944 {
3945 ev_ref (EV_A);
3122 ev_timer_stop (EV_A_ &w->timer); 3946 ev_timer_stop (EV_A_ &w->timer);
3947 }
3123 3948
3124 ev_stop (EV_A_ (W)w); 3949 ev_stop (EV_A_ (W)w);
3125 3950
3126 EV_FREQUENT_CHECK; 3951 EV_FREQUENT_CHECK;
3127} 3952}
3128#endif 3953#endif
3129 3954
3130#if EV_IDLE_ENABLE 3955#if EV_IDLE_ENABLE
3131void 3956void
3132ev_idle_start (EV_P_ ev_idle *w) 3957ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3133{ 3958{
3134 if (expect_false (ev_is_active (w))) 3959 if (expect_false (ev_is_active (w)))
3135 return; 3960 return;
3136 3961
3137 pri_adjust (EV_A_ (W)w); 3962 pri_adjust (EV_A_ (W)w);
… …
3150 3975
3151 EV_FREQUENT_CHECK; 3976 EV_FREQUENT_CHECK;
3152} 3977}
3153 3978
3154void 3979void
3155ev_idle_stop (EV_P_ ev_idle *w) 3980ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3156{ 3981{
3157 clear_pending (EV_A_ (W)w); 3982 clear_pending (EV_A_ (W)w);
3158 if (expect_false (!ev_is_active (w))) 3983 if (expect_false (!ev_is_active (w)))
3159 return; 3984 return;
3160 3985
… …
3172 3997
3173 EV_FREQUENT_CHECK; 3998 EV_FREQUENT_CHECK;
3174} 3999}
3175#endif 4000#endif
3176 4001
4002#if EV_PREPARE_ENABLE
3177void 4003void
3178ev_prepare_start (EV_P_ ev_prepare *w) 4004ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3179{ 4005{
3180 if (expect_false (ev_is_active (w))) 4006 if (expect_false (ev_is_active (w)))
3181 return; 4007 return;
3182 4008
3183 EV_FREQUENT_CHECK; 4009 EV_FREQUENT_CHECK;
… …
3188 4014
3189 EV_FREQUENT_CHECK; 4015 EV_FREQUENT_CHECK;
3190} 4016}
3191 4017
3192void 4018void
3193ev_prepare_stop (EV_P_ ev_prepare *w) 4019ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3194{ 4020{
3195 clear_pending (EV_A_ (W)w); 4021 clear_pending (EV_A_ (W)w);
3196 if (expect_false (!ev_is_active (w))) 4022 if (expect_false (!ev_is_active (w)))
3197 return; 4023 return;
3198 4024
… …
3207 4033
3208 ev_stop (EV_A_ (W)w); 4034 ev_stop (EV_A_ (W)w);
3209 4035
3210 EV_FREQUENT_CHECK; 4036 EV_FREQUENT_CHECK;
3211} 4037}
4038#endif
3212 4039
4040#if EV_CHECK_ENABLE
3213void 4041void
3214ev_check_start (EV_P_ ev_check *w) 4042ev_check_start (EV_P_ ev_check *w) EV_THROW
3215{ 4043{
3216 if (expect_false (ev_is_active (w))) 4044 if (expect_false (ev_is_active (w)))
3217 return; 4045 return;
3218 4046
3219 EV_FREQUENT_CHECK; 4047 EV_FREQUENT_CHECK;
… …
3224 4052
3225 EV_FREQUENT_CHECK; 4053 EV_FREQUENT_CHECK;
3226} 4054}
3227 4055
3228void 4056void
3229ev_check_stop (EV_P_ ev_check *w) 4057ev_check_stop (EV_P_ ev_check *w) EV_THROW
3230{ 4058{
3231 clear_pending (EV_A_ (W)w); 4059 clear_pending (EV_A_ (W)w);
3232 if (expect_false (!ev_is_active (w))) 4060 if (expect_false (!ev_is_active (w)))
3233 return; 4061 return;
3234 4062
… …
3243 4071
3244 ev_stop (EV_A_ (W)w); 4072 ev_stop (EV_A_ (W)w);
3245 4073
3246 EV_FREQUENT_CHECK; 4074 EV_FREQUENT_CHECK;
3247} 4075}
4076#endif
3248 4077
3249#if EV_EMBED_ENABLE 4078#if EV_EMBED_ENABLE
3250void noinline 4079void noinline
3251ev_embed_sweep (EV_P_ ev_embed *w) 4080ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3252{ 4081{
3253 ev_loop (w->other, EVLOOP_NONBLOCK); 4082 ev_run (w->other, EVRUN_NOWAIT);
3254} 4083}
3255 4084
3256static void 4085static void
3257embed_io_cb (EV_P_ ev_io *io, int revents) 4086embed_io_cb (EV_P_ ev_io *io, int revents)
3258{ 4087{
3259 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4088 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3260 4089
3261 if (ev_cb (w)) 4090 if (ev_cb (w))
3262 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4091 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3263 else 4092 else
3264 ev_loop (w->other, EVLOOP_NONBLOCK); 4093 ev_run (w->other, EVRUN_NOWAIT);
3265} 4094}
3266 4095
3267static void 4096static void
3268embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4097embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3269{ 4098{
… …
3273 EV_P = w->other; 4102 EV_P = w->other;
3274 4103
3275 while (fdchangecnt) 4104 while (fdchangecnt)
3276 { 4105 {
3277 fd_reify (EV_A); 4106 fd_reify (EV_A);
3278 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4107 ev_run (EV_A_ EVRUN_NOWAIT);
3279 } 4108 }
3280 } 4109 }
3281} 4110}
3282 4111
3283static void 4112static void
… …
3289 4118
3290 { 4119 {
3291 EV_P = w->other; 4120 EV_P = w->other;
3292 4121
3293 ev_loop_fork (EV_A); 4122 ev_loop_fork (EV_A);
3294 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4123 ev_run (EV_A_ EVRUN_NOWAIT);
3295 } 4124 }
3296 4125
3297 ev_embed_start (EV_A_ w); 4126 ev_embed_start (EV_A_ w);
3298} 4127}
3299 4128
… …
3304 ev_idle_stop (EV_A_ idle); 4133 ev_idle_stop (EV_A_ idle);
3305} 4134}
3306#endif 4135#endif
3307 4136
3308void 4137void
3309ev_embed_start (EV_P_ ev_embed *w) 4138ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3310{ 4139{
3311 if (expect_false (ev_is_active (w))) 4140 if (expect_false (ev_is_active (w)))
3312 return; 4141 return;
3313 4142
3314 { 4143 {
… …
3335 4164
3336 EV_FREQUENT_CHECK; 4165 EV_FREQUENT_CHECK;
3337} 4166}
3338 4167
3339void 4168void
3340ev_embed_stop (EV_P_ ev_embed *w) 4169ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3341{ 4170{
3342 clear_pending (EV_A_ (W)w); 4171 clear_pending (EV_A_ (W)w);
3343 if (expect_false (!ev_is_active (w))) 4172 if (expect_false (!ev_is_active (w)))
3344 return; 4173 return;
3345 4174
… …
3347 4176
3348 ev_io_stop (EV_A_ &w->io); 4177 ev_io_stop (EV_A_ &w->io);
3349 ev_prepare_stop (EV_A_ &w->prepare); 4178 ev_prepare_stop (EV_A_ &w->prepare);
3350 ev_fork_stop (EV_A_ &w->fork); 4179 ev_fork_stop (EV_A_ &w->fork);
3351 4180
4181 ev_stop (EV_A_ (W)w);
4182
3352 EV_FREQUENT_CHECK; 4183 EV_FREQUENT_CHECK;
3353} 4184}
3354#endif 4185#endif
3355 4186
3356#if EV_FORK_ENABLE 4187#if EV_FORK_ENABLE
3357void 4188void
3358ev_fork_start (EV_P_ ev_fork *w) 4189ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3359{ 4190{
3360 if (expect_false (ev_is_active (w))) 4191 if (expect_false (ev_is_active (w)))
3361 return; 4192 return;
3362 4193
3363 EV_FREQUENT_CHECK; 4194 EV_FREQUENT_CHECK;
… …
3368 4199
3369 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
3370} 4201}
3371 4202
3372void 4203void
3373ev_fork_stop (EV_P_ ev_fork *w) 4204ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3374{ 4205{
3375 clear_pending (EV_A_ (W)w); 4206 clear_pending (EV_A_ (W)w);
3376 if (expect_false (!ev_is_active (w))) 4207 if (expect_false (!ev_is_active (w)))
3377 return; 4208 return;
3378 4209
… …
3389 4220
3390 EV_FREQUENT_CHECK; 4221 EV_FREQUENT_CHECK;
3391} 4222}
3392#endif 4223#endif
3393 4224
4225#if EV_CLEANUP_ENABLE
4226void
4227ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4228{
4229 if (expect_false (ev_is_active (w)))
4230 return;
4231
4232 EV_FREQUENT_CHECK;
4233
4234 ev_start (EV_A_ (W)w, ++cleanupcnt);
4235 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4236 cleanups [cleanupcnt - 1] = w;
4237
4238 /* cleanup watchers should never keep a refcount on the loop */
4239 ev_unref (EV_A);
4240 EV_FREQUENT_CHECK;
4241}
4242
4243void
4244ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4245{
4246 clear_pending (EV_A_ (W)w);
4247 if (expect_false (!ev_is_active (w)))
4248 return;
4249
4250 EV_FREQUENT_CHECK;
4251 ev_ref (EV_A);
4252
4253 {
4254 int active = ev_active (w);
4255
4256 cleanups [active - 1] = cleanups [--cleanupcnt];
4257 ev_active (cleanups [active - 1]) = active;
4258 }
4259
4260 ev_stop (EV_A_ (W)w);
4261
4262 EV_FREQUENT_CHECK;
4263}
4264#endif
4265
3394#if EV_ASYNC_ENABLE 4266#if EV_ASYNC_ENABLE
3395void 4267void
3396ev_async_start (EV_P_ ev_async *w) 4268ev_async_start (EV_P_ ev_async *w) EV_THROW
3397{ 4269{
3398 if (expect_false (ev_is_active (w))) 4270 if (expect_false (ev_is_active (w)))
3399 return; 4271 return;
4272
4273 w->sent = 0;
3400 4274
3401 evpipe_init (EV_A); 4275 evpipe_init (EV_A);
3402 4276
3403 EV_FREQUENT_CHECK; 4277 EV_FREQUENT_CHECK;
3404 4278
… …
3408 4282
3409 EV_FREQUENT_CHECK; 4283 EV_FREQUENT_CHECK;
3410} 4284}
3411 4285
3412void 4286void
3413ev_async_stop (EV_P_ ev_async *w) 4287ev_async_stop (EV_P_ ev_async *w) EV_THROW
3414{ 4288{
3415 clear_pending (EV_A_ (W)w); 4289 clear_pending (EV_A_ (W)w);
3416 if (expect_false (!ev_is_active (w))) 4290 if (expect_false (!ev_is_active (w)))
3417 return; 4291 return;
3418 4292
… …
3429 4303
3430 EV_FREQUENT_CHECK; 4304 EV_FREQUENT_CHECK;
3431} 4305}
3432 4306
3433void 4307void
3434ev_async_send (EV_P_ ev_async *w) 4308ev_async_send (EV_P_ ev_async *w) EV_THROW
3435{ 4309{
3436 w->sent = 1; 4310 w->sent = 1;
3437 evpipe_write (EV_A_ &async_pending); 4311 evpipe_write (EV_A_ &async_pending);
3438} 4312}
3439#endif 4313#endif
… …
3476 4350
3477 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4351 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3478} 4352}
3479 4353
3480void 4354void
3481ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4355ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3482{ 4356{
3483 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4357 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3484 4358
3485 if (expect_false (!once)) 4359 if (expect_false (!once))
3486 { 4360 {
3487 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4361 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3488 return; 4362 return;
3489 } 4363 }
3490 4364
3491 once->cb = cb; 4365 once->cb = cb;
3492 once->arg = arg; 4366 once->arg = arg;
… …
3507} 4381}
3508 4382
3509/*****************************************************************************/ 4383/*****************************************************************************/
3510 4384
3511#if EV_WALK_ENABLE 4385#if EV_WALK_ENABLE
3512void 4386void ecb_cold
3513ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4387ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3514{ 4388{
3515 int i, j; 4389 int i, j;
3516 ev_watcher_list *wl, *wn; 4390 ev_watcher_list *wl, *wn;
3517 4391
3518 if (types & (EV_IO | EV_EMBED)) 4392 if (types & (EV_IO | EV_EMBED))
… …
3561 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4435 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3562#endif 4436#endif
3563 4437
3564#if EV_IDLE_ENABLE 4438#if EV_IDLE_ENABLE
3565 if (types & EV_IDLE) 4439 if (types & EV_IDLE)
3566 for (j = NUMPRI; i--; ) 4440 for (j = NUMPRI; j--; )
3567 for (i = idlecnt [j]; i--; ) 4441 for (i = idlecnt [j]; i--; )
3568 cb (EV_A_ EV_IDLE, idles [j][i]); 4442 cb (EV_A_ EV_IDLE, idles [j][i]);
3569#endif 4443#endif
3570 4444
3571#if EV_FORK_ENABLE 4445#if EV_FORK_ENABLE
… …
3579 if (types & EV_ASYNC) 4453 if (types & EV_ASYNC)
3580 for (i = asynccnt; i--; ) 4454 for (i = asynccnt; i--; )
3581 cb (EV_A_ EV_ASYNC, asyncs [i]); 4455 cb (EV_A_ EV_ASYNC, asyncs [i]);
3582#endif 4456#endif
3583 4457
4458#if EV_PREPARE_ENABLE
3584 if (types & EV_PREPARE) 4459 if (types & EV_PREPARE)
3585 for (i = preparecnt; i--; ) 4460 for (i = preparecnt; i--; )
3586#if EV_EMBED_ENABLE 4461# if EV_EMBED_ENABLE
3587 if (ev_cb (prepares [i]) != embed_prepare_cb) 4462 if (ev_cb (prepares [i]) != embed_prepare_cb)
3588#endif 4463# endif
3589 cb (EV_A_ EV_PREPARE, prepares [i]); 4464 cb (EV_A_ EV_PREPARE, prepares [i]);
4465#endif
3590 4466
4467#if EV_CHECK_ENABLE
3591 if (types & EV_CHECK) 4468 if (types & EV_CHECK)
3592 for (i = checkcnt; i--; ) 4469 for (i = checkcnt; i--; )
3593 cb (EV_A_ EV_CHECK, checks [i]); 4470 cb (EV_A_ EV_CHECK, checks [i]);
4471#endif
3594 4472
4473#if EV_SIGNAL_ENABLE
3595 if (types & EV_SIGNAL) 4474 if (types & EV_SIGNAL)
3596 for (i = 0; i < EV_NSIG - 1; ++i) 4475 for (i = 0; i < EV_NSIG - 1; ++i)
3597 for (wl = signals [i].head; wl; ) 4476 for (wl = signals [i].head; wl; )
3598 { 4477 {
3599 wn = wl->next; 4478 wn = wl->next;
3600 cb (EV_A_ EV_SIGNAL, wl); 4479 cb (EV_A_ EV_SIGNAL, wl);
3601 wl = wn; 4480 wl = wn;
3602 } 4481 }
4482#endif
3603 4483
4484#if EV_CHILD_ENABLE
3604 if (types & EV_CHILD) 4485 if (types & EV_CHILD)
3605 for (i = EV_PID_HASHSIZE; i--; ) 4486 for (i = (EV_PID_HASHSIZE); i--; )
3606 for (wl = childs [i]; wl; ) 4487 for (wl = childs [i]; wl; )
3607 { 4488 {
3608 wn = wl->next; 4489 wn = wl->next;
3609 cb (EV_A_ EV_CHILD, wl); 4490 cb (EV_A_ EV_CHILD, wl);
3610 wl = wn; 4491 wl = wn;
3611 } 4492 }
4493#endif
3612/* EV_STAT 0x00001000 /* stat data changed */ 4494/* EV_STAT 0x00001000 /* stat data changed */
3613/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4495/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3614} 4496}
3615#endif 4497#endif
3616 4498
3617#if EV_MULTIPLICITY 4499#if EV_MULTIPLICITY
3618 #include "ev_wrap.h" 4500 #include "ev_wrap.h"
3619#endif 4501#endif
3620 4502
3621#ifdef __cplusplus
3622}
3623#endif
3624

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