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Comparing libev/ev.c (file contents):
Revision 1.306 by root, Sun Jul 19 06:35:25 2009 UTC vs.
Revision 1.368 by root, Mon Jan 17 12:11:11 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
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
77# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
79# endif 75# endif
80# endif 76# endif
81 77
78# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
85# else 82# else
83# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
88# endif 94# endif
89 95
96# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 99# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 100# else
101# undef EV_USE_POLL
102# define EV_USE_POLL 0 102# define EV_USE_POLL 0
103# endif
104# endif 103# endif
105 104
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
109# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
112# endif 112# endif
113 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
120# endif 121# endif
121 122
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
125# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
128# endif 130# endif
129 131
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
136# endif 139# endif
137 140
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 142# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 143# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
144# endif 148# endif
145 149
150# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 151# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 152# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
152# endif 157# endif
153 158
154#endif 159#endif
155 160
156#include <math.h> 161#include <math.h>
157#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
158#include <fcntl.h> 164#include <fcntl.h>
159#include <stddef.h> 165#include <stddef.h>
160 166
161#include <stdio.h> 167#include <stdio.h>
162 168
163#include <assert.h> 169#include <assert.h>
164#include <errno.h> 170#include <errno.h>
165#include <sys/types.h> 171#include <sys/types.h>
166#include <time.h> 172#include <time.h>
173#include <limits.h>
167 174
168#include <signal.h> 175#include <signal.h>
169 176
170#ifdef EV_H 177#ifdef EV_H
171# include EV_H 178# include EV_H
172#else 179#else
173# include "ev.h" 180# include "ev.h"
174#endif 181#endif
182
183EV_CPP(extern "C" {)
175 184
176#ifndef _WIN32 185#ifndef _WIN32
177# include <sys/time.h> 186# include <sys/time.h>
178# include <sys/wait.h> 187# include <sys/wait.h>
179# include <unistd.h> 188# include <unistd.h>
182# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
183# include <windows.h> 192# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
186# endif 195# endif
196# undef EV_AVOID_STDIO
187#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
188 206
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
190 208
191/* try to deduce the maximum number of signals on this platform */ 209/* try to deduce the maximum number of signals on this platform */
192/* one some platforms, NSIG is one too large. we do not bother */
193#if defined (EV_NSIG) 210#if defined (EV_NSIG)
194/* use what's provided */ 211/* use what's provided */
195#elif defined (NSIG) 212#elif defined (NSIG)
196# define EV_NSIG (NSIG) 213# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 214#elif defined(_NSIG)
205#elif defined (MAXSIG) 222#elif defined (MAXSIG)
206# define EV_NSIG (MAXSIG+1) 223# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 224#elif defined (MAX_SIG)
208# define EV_NSIG (MAX_SIG+1) 225# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 226#elif defined (SIGARRAYSIZE)
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 228#elif defined (_sys_nsig)
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 230#else
214# error "unable to find value for NSIG, please report" 231# error "unable to find value for NSIG, please report"
215/* to make it compile regardless, just remove the above line */ 232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
216# define EV_NSIG 65 234# define EV_NSIG 65
217#endif 235#endif
218 236
219#ifndef EV_USE_CLOCK_SYSCALL 237#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 238# if __linux && __GLIBC__ >= 2
221# define EV_USE_CLOCK_SYSCALL 1 239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 240# else
223# define EV_USE_CLOCK_SYSCALL 0 241# define EV_USE_CLOCK_SYSCALL 0
224# endif 242# endif
225#endif 243#endif
226 244
227#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 248# else
231# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
232# endif 250# endif
233#endif 251#endif
234 252
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 255#endif
238 256
239#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 260# else
243# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
244# endif 262# endif
245#endif 263#endif
246 264
247#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 267#endif
250 268
251#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
252# ifdef _WIN32 270# ifdef _WIN32
253# define EV_USE_POLL 0 271# define EV_USE_POLL 0
254# else 272# else
255# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 274# endif
257#endif 275#endif
258 276
259#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 280# else
263# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
264# endif 282# endif
265#endif 283#endif
266 284
272# define EV_USE_PORT 0 290# define EV_USE_PORT 0
273#endif 291#endif
274 292
275#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 296# else
279# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
280# endif 298# endif
281#endif 299#endif
282 300
283#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 303#endif
290 304
291#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 307#endif
298 308
299#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 312# else
303# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
304# endif 314# endif
305#endif 315#endif
306 316
307#ifndef EV_USE_SIGNALFD 317#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 319# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 320# else
311# define EV_USE_SIGNALFD 0 321# define EV_USE_SIGNALFD 0
312# endif 322# endif
313#endif 323#endif
314 324
317# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
319#endif 329#endif
320 330
321#ifndef EV_VERIFY 331#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 333#endif
324 334
325#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 337#endif
328 338
329#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
331#endif 341#endif
332 342
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334/* which makes programs even slower. might work on other unices, too. */ 344/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 345#if EV_USE_CLOCK_SYSCALL
344# endif 354# endif
345#endif 355#endif
346 356
347/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
348 358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
364
349#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
350# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
351# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
352#endif 368#endif
353 369
366# include <sys/select.h> 382# include <sys/select.h>
367# endif 383# endif
368#endif 384#endif
369 385
370#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h> 387# include <sys/statfs.h>
373# include <sys/inotify.h> 388# include <sys/inotify.h>
374/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
375# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
387# include <stdint.h> 402# include <stdint.h>
388# ifndef EFD_NONBLOCK 403# ifndef EFD_NONBLOCK
389# define EFD_NONBLOCK O_NONBLOCK 404# define EFD_NONBLOCK O_NONBLOCK
390# endif 405# endif
391# ifndef EFD_CLOEXEC 406# ifndef EFD_CLOEXEC
407# ifdef O_CLOEXEC
392# define EFD_CLOEXEC O_CLOEXEC 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
393# endif 412# endif
394# ifdef __cplusplus 413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
395extern "C" { 414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
396# endif 421# endif
397int eventfd (unsigned int initval, int flags); 422# ifndef SFD_CLOEXEC
398# ifdef __cplusplus 423# ifdef O_CLOEXEC
399} 424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
400# endif 428# endif
401#endif 429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
402 430
403#if EV_USE_SIGNALFD 431struct signalfd_siginfo
404# include <sys/signalfd.h> 432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
405#endif 436#endif
406 437
407/**/ 438/**/
408 439
409#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
410# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
411#else 442#else
412# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
413#endif 444#endif
414 445
415/* 446/*
422 */ 453 */
423#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
424 455
425#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
426#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
427/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 458
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
428 461
429#if __GNUC__ >= 4 462#if __GNUC__ >= 4
430# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
431# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
432#else 465#else
439 472
440#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
441#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
442#define inline_size static inline 475#define inline_size static inline
443 476
444#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
445# define inline_speed static noinline 480# define inline_speed static noinline
446#else
447# define inline_speed static inline
448#endif 481#endif
449 482
450#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
451 484
452#if EV_MINPRI == EV_MAXPRI 485#if EV_MINPRI == EV_MAXPRI
465#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
466#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
467 500
468#if EV_USE_REALTIME 501#if EV_USE_REALTIME
469/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
470/* giving it a reasonably high chance of working on typical architetcures */ 503/* giving it a reasonably high chance of working on typical architectures */
471static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
472#endif 505#endif
473 506
474#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
475static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
476#endif 509#endif
477 510
511#ifndef EV_FD_TO_WIN32_HANDLE
512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
513#endif
514#ifndef EV_WIN32_HANDLE_TO_FD
515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
516#endif
517#ifndef EV_WIN32_CLOSE_FD
518# define EV_WIN32_CLOSE_FD(fd) close (fd)
519#endif
520
478#ifdef _WIN32 521#ifdef _WIN32
479# include "ev_win32.c" 522# include "ev_win32.c"
480#endif 523#endif
481 524
482/*****************************************************************************/ 525/*****************************************************************************/
526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
483 576
484static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
485 578
486void 579void
487ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
497 590
498 if (syserr_cb) 591 if (syserr_cb)
499 syserr_cb (msg); 592 syserr_cb (msg);
500 else 593 else
501 { 594 {
595#if EV_AVOID_STDIO
596 ev_printerr (msg);
597 ev_printerr (": ");
598 ev_printerr (strerror (errno));
599 ev_printerr ("\n");
600#else
502 perror (msg); 601 perror (msg);
602#endif
503 abort (); 603 abort ();
504 } 604 }
505} 605}
506 606
507static void * 607static void *
508ev_realloc_emul (void *ptr, long size) 608ev_realloc_emul (void *ptr, long size)
509{ 609{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
510 /* some systems, notably openbsd and darwin, fail to properly 613 /* some systems, notably openbsd and darwin, fail to properly
511 * implement realloc (x, 0) (as required by both ansi c-98 and 614 * implement realloc (x, 0) (as required by both ansi c-89 and
512 * the single unix specification, so work around them here. 615 * the single unix specification, so work around them here.
513 */ 616 */
514 617
515 if (size) 618 if (size)
516 return realloc (ptr, size); 619 return realloc (ptr, size);
517 620
518 free (ptr); 621 free (ptr);
519 return 0; 622 return 0;
623#endif
520} 624}
521 625
522static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
523 627
524void 628void
532{ 636{
533 ptr = alloc (ptr, size); 637 ptr = alloc (ptr, size);
534 638
535 if (!ptr && size) 639 if (!ptr && size)
536 { 640 {
641#if EV_AVOID_STDIO
642 ev_printerr ("(libev) memory allocation failed, aborting.\n");
643#else
537 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 644 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
645#endif
538 abort (); 646 abort ();
539 } 647 }
540 648
541 return ptr; 649 return ptr;
542} 650}
558 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 666 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
559 unsigned char unused; 667 unsigned char unused;
560#if EV_USE_EPOLL 668#if EV_USE_EPOLL
561 unsigned int egen; /* generation counter to counter epoll bugs */ 669 unsigned int egen; /* generation counter to counter epoll bugs */
562#endif 670#endif
563#if EV_SELECT_IS_WINSOCKET 671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
564 SOCKET handle; 672 SOCKET handle;
673#endif
674#if EV_USE_IOCP
675 OVERLAPPED or, ow;
565#endif 676#endif
566} ANFD; 677} ANFD;
567 678
568/* stores the pending event set for a given watcher */ 679/* stores the pending event set for a given watcher */
569typedef struct 680typedef struct
624 735
625 static int ev_default_loop_ptr; 736 static int ev_default_loop_ptr;
626 737
627#endif 738#endif
628 739
629#if EV_MINIMAL < 2 740#if EV_FEATURE_API
630# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 741# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
631# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 742# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
632# define EV_INVOKE_PENDING invoke_cb (EV_A) 743# define EV_INVOKE_PENDING invoke_cb (EV_A)
633#else 744#else
634# define EV_RELEASE_CB (void)0 745# define EV_RELEASE_CB (void)0
635# define EV_ACQUIRE_CB (void)0 746# define EV_ACQUIRE_CB (void)0
636# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 747# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
637#endif 748#endif
638 749
639#define EVUNLOOP_RECURSE 0x80 750#define EVBREAK_RECURSE 0x80
640 751
641/*****************************************************************************/ 752/*****************************************************************************/
642 753
643#ifndef EV_HAVE_EV_TIME 754#ifndef EV_HAVE_EV_TIME
644ev_tstamp 755ev_tstamp
688 if (delay > 0.) 799 if (delay > 0.)
689 { 800 {
690#if EV_USE_NANOSLEEP 801#if EV_USE_NANOSLEEP
691 struct timespec ts; 802 struct timespec ts;
692 803
693 ts.tv_sec = (time_t)delay; 804 EV_TS_SET (ts, delay);
694 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
695
696 nanosleep (&ts, 0); 805 nanosleep (&ts, 0);
697#elif defined(_WIN32) 806#elif defined(_WIN32)
698 Sleep ((unsigned long)(delay * 1e3)); 807 Sleep ((unsigned long)(delay * 1e3));
699#else 808#else
700 struct timeval tv; 809 struct timeval tv;
701 810
702 tv.tv_sec = (time_t)delay;
703 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
704
705 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 811 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
706 /* something not guaranteed by newer posix versions, but guaranteed */ 812 /* something not guaranteed by newer posix versions, but guaranteed */
707 /* by older ones */ 813 /* by older ones */
814 EV_TV_SET (tv, delay);
708 select (0, 0, 0, 0, &tv); 815 select (0, 0, 0, 0, &tv);
709#endif 816#endif
710 } 817 }
711} 818}
712 819
820inline_speed int
821ev_timeout_to_ms (ev_tstamp timeout)
822{
823 int ms = timeout * 1000. + .999999;
824
825 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
826}
827
713/*****************************************************************************/ 828/*****************************************************************************/
714 829
715#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 830#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
716 831
717/* find a suitable new size for the given array, */ 832/* find a suitable new size for the given array, */
718/* hopefully by rounding to a ncie-to-malloc size */ 833/* hopefully by rounding to a nice-to-malloc size */
719inline_size int 834inline_size int
720array_nextsize (int elem, int cur, int cnt) 835array_nextsize (int elem, int cur, int cnt)
721{ 836{
722 int ncur = cur + 1; 837 int ncur = cur + 1;
723 838
819} 934}
820 935
821/*****************************************************************************/ 936/*****************************************************************************/
822 937
823inline_speed void 938inline_speed void
824fd_event_nc (EV_P_ int fd, int revents) 939fd_event_nocheck (EV_P_ int fd, int revents)
825{ 940{
826 ANFD *anfd = anfds + fd; 941 ANFD *anfd = anfds + fd;
827 ev_io *w; 942 ev_io *w;
828 943
829 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
841fd_event (EV_P_ int fd, int revents) 956fd_event (EV_P_ int fd, int revents)
842{ 957{
843 ANFD *anfd = anfds + fd; 958 ANFD *anfd = anfds + fd;
844 959
845 if (expect_true (!anfd->reify)) 960 if (expect_true (!anfd->reify))
846 fd_event_nc (EV_A_ fd, revents); 961 fd_event_nocheck (EV_A_ fd, revents);
847} 962}
848 963
849void 964void
850ev_feed_fd_event (EV_P_ int fd, int revents) 965ev_feed_fd_event (EV_P_ int fd, int revents)
851{ 966{
852 if (fd >= 0 && fd < anfdmax) 967 if (fd >= 0 && fd < anfdmax)
853 fd_event_nc (EV_A_ fd, revents); 968 fd_event_nocheck (EV_A_ fd, revents);
854} 969}
855 970
856/* make sure the external fd watch events are in-sync */ 971/* make sure the external fd watch events are in-sync */
857/* with the kernel/libev internal state */ 972/* with the kernel/libev internal state */
858inline_size void 973inline_size void
864 { 979 {
865 int fd = fdchanges [i]; 980 int fd = fdchanges [i];
866 ANFD *anfd = anfds + fd; 981 ANFD *anfd = anfds + fd;
867 ev_io *w; 982 ev_io *w;
868 983
869 unsigned char events = 0; 984 unsigned char o_events = anfd->events;
985 unsigned char o_reify = anfd->reify;
870 986
871 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 987 anfd->reify = 0;
872 events |= (unsigned char)w->events;
873 988
874#if EV_SELECT_IS_WINSOCKET 989#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
875 if (events) 990 if (o_reify & EV__IOFDSET)
876 { 991 {
877 unsigned long arg; 992 unsigned long arg;
878 #ifdef EV_FD_TO_WIN32_HANDLE
879 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 993 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
880 #else
881 anfd->handle = _get_osfhandle (fd);
882 #endif
883 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 994 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
995 printf ("oi %d %x\n", fd, anfd->handle);//D
884 } 996 }
885#endif 997#endif
886 998
999 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
887 { 1000 {
888 unsigned char o_events = anfd->events;
889 unsigned char o_reify = anfd->reify;
890
891 anfd->reify = 0;
892 anfd->events = events; 1001 anfd->events = 0;
893 1002
894 if (o_events != events || o_reify & EV__IOFDSET) 1003 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1004 anfd->events |= (unsigned char)w->events;
1005
1006 if (o_events != anfd->events)
1007 o_reify = EV__IOFDSET; /* actually |= */
1008 }
1009
1010 if (o_reify & EV__IOFDSET)
895 backend_modify (EV_A_ fd, o_events, events); 1011 backend_modify (EV_A_ fd, o_events, anfd->events);
896 }
897 } 1012 }
898 1013
899 fdchangecnt = 0; 1014 fdchangecnt = 0;
900} 1015}
901 1016
925 ev_io_stop (EV_A_ w); 1040 ev_io_stop (EV_A_ w);
926 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1041 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
927 } 1042 }
928} 1043}
929 1044
930/* check whether the given fd is atcually valid, for error recovery */ 1045/* check whether the given fd is actually valid, for error recovery */
931inline_size int 1046inline_size int
932fd_valid (int fd) 1047fd_valid (int fd)
933{ 1048{
934#ifdef _WIN32 1049#ifdef _WIN32
935 return _get_osfhandle (fd) != -1; 1050 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
936#else 1051#else
937 return fcntl (fd, F_GETFD) != -1; 1052 return fcntl (fd, F_GETFD) != -1;
938#endif 1053#endif
939} 1054}
940 1055
958 1073
959 for (fd = anfdmax; fd--; ) 1074 for (fd = anfdmax; fd--; )
960 if (anfds [fd].events) 1075 if (anfds [fd].events)
961 { 1076 {
962 fd_kill (EV_A_ fd); 1077 fd_kill (EV_A_ fd);
963 return; 1078 break;
964 } 1079 }
965} 1080}
966 1081
967/* usually called after fork if backend needs to re-arm all fds from scratch */ 1082/* usually called after fork if backend needs to re-arm all fds from scratch */
968static void noinline 1083static void noinline
977 anfds [fd].emask = 0; 1092 anfds [fd].emask = 0;
978 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1093 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
979 } 1094 }
980} 1095}
981 1096
1097/* used to prepare libev internal fd's */
1098/* this is not fork-safe */
1099inline_speed void
1100fd_intern (int fd)
1101{
1102#ifdef _WIN32
1103 unsigned long arg = 1;
1104 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1105#else
1106 fcntl (fd, F_SETFD, FD_CLOEXEC);
1107 fcntl (fd, F_SETFL, O_NONBLOCK);
1108#endif
1109}
1110
982/*****************************************************************************/ 1111/*****************************************************************************/
983 1112
984/* 1113/*
985 * the heap functions want a real array index. array index 0 uis guaranteed to not 1114 * the heap functions want a real array index. array index 0 is guaranteed to not
986 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1115 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
987 * the branching factor of the d-tree. 1116 * the branching factor of the d-tree.
988 */ 1117 */
989 1118
990/* 1119/*
1058 1187
1059 for (;;) 1188 for (;;)
1060 { 1189 {
1061 int c = k << 1; 1190 int c = k << 1;
1062 1191
1063 if (c > N + HEAP0 - 1) 1192 if (c >= N + HEAP0)
1064 break; 1193 break;
1065 1194
1066 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1195 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1067 ? 1 : 0; 1196 ? 1 : 0;
1068 1197
1104 1233
1105/* move an element suitably so it is in a correct place */ 1234/* move an element suitably so it is in a correct place */
1106inline_size void 1235inline_size void
1107adjustheap (ANHE *heap, int N, int k) 1236adjustheap (ANHE *heap, int N, int k)
1108{ 1237{
1109 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1238 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1110 upheap (heap, k); 1239 upheap (heap, k);
1111 else 1240 else
1112 downheap (heap, N, k); 1241 downheap (heap, N, k);
1113} 1242}
1114 1243
1127/*****************************************************************************/ 1256/*****************************************************************************/
1128 1257
1129/* associate signal watchers to a signal signal */ 1258/* associate signal watchers to a signal signal */
1130typedef struct 1259typedef struct
1131{ 1260{
1261 EV_ATOMIC_T pending;
1132#if EV_MULTIPLICITY 1262#if EV_MULTIPLICITY
1133 EV_P; 1263 EV_P;
1134#endif 1264#endif
1135 WL head; 1265 WL head;
1136 EV_ATOMIC_T gotsig;
1137} ANSIG; 1266} ANSIG;
1138 1267
1139static ANSIG signals [EV_NSIG - 1]; 1268static ANSIG signals [EV_NSIG - 1];
1140static EV_ATOMIC_T gotsig;
1141 1269
1142/*****************************************************************************/ 1270/*****************************************************************************/
1143 1271
1144/* used to prepare libev internal fd's */ 1272#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1145/* this is not fork-safe */
1146inline_speed void
1147fd_intern (int fd)
1148{
1149#ifdef _WIN32
1150 unsigned long arg = 1;
1151 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1152#else
1153 fcntl (fd, F_SETFD, FD_CLOEXEC);
1154 fcntl (fd, F_SETFL, O_NONBLOCK);
1155#endif
1156}
1157 1273
1158static void noinline 1274static void noinline
1159evpipe_init (EV_P) 1275evpipe_init (EV_P)
1160{ 1276{
1161 if (!ev_is_active (&pipe_w)) 1277 if (!ev_is_active (&pipe_w))
1162 { 1278 {
1163#if EV_USE_EVENTFD 1279# if EV_USE_EVENTFD
1164 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1280 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1165 if (evfd < 0 && errno == EINVAL) 1281 if (evfd < 0 && errno == EINVAL)
1166 evfd = eventfd (0, 0); 1282 evfd = eventfd (0, 0);
1167 1283
1168 if (evfd >= 0) 1284 if (evfd >= 0)
1170 evpipe [0] = -1; 1286 evpipe [0] = -1;
1171 fd_intern (evfd); /* doing it twice doesn't hurt */ 1287 fd_intern (evfd); /* doing it twice doesn't hurt */
1172 ev_io_set (&pipe_w, evfd, EV_READ); 1288 ev_io_set (&pipe_w, evfd, EV_READ);
1173 } 1289 }
1174 else 1290 else
1175#endif 1291# endif
1176 { 1292 {
1177 while (pipe (evpipe)) 1293 while (pipe (evpipe))
1178 ev_syserr ("(libev) error creating signal/async pipe"); 1294 ev_syserr ("(libev) error creating signal/async pipe");
1179 1295
1180 fd_intern (evpipe [0]); 1296 fd_intern (evpipe [0]);
1191evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1307evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1192{ 1308{
1193 if (!*flag) 1309 if (!*flag)
1194 { 1310 {
1195 int old_errno = errno; /* save errno because write might clobber it */ 1311 int old_errno = errno; /* save errno because write might clobber it */
1312 char dummy;
1196 1313
1197 *flag = 1; 1314 *flag = 1;
1198 1315
1199#if EV_USE_EVENTFD 1316#if EV_USE_EVENTFD
1200 if (evfd >= 0) 1317 if (evfd >= 0)
1202 uint64_t counter = 1; 1319 uint64_t counter = 1;
1203 write (evfd, &counter, sizeof (uint64_t)); 1320 write (evfd, &counter, sizeof (uint64_t));
1204 } 1321 }
1205 else 1322 else
1206#endif 1323#endif
1324 /* win32 people keep sending patches that change this write() to send() */
1325 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1326 /* so when you think this write should be a send instead, please find out */
1327 /* where your send() is from - it's definitely not the microsoft send, and */
1328 /* tell me. thank you. */
1207 write (evpipe [1], &old_errno, 1); 1329 write (evpipe [1], &dummy, 1);
1208 1330
1209 errno = old_errno; 1331 errno = old_errno;
1210 } 1332 }
1211} 1333}
1212 1334
1213/* called whenever the libev signal pipe */ 1335/* called whenever the libev signal pipe */
1214/* got some events (signal, async) */ 1336/* got some events (signal, async) */
1215static void 1337static void
1216pipecb (EV_P_ ev_io *iow, int revents) 1338pipecb (EV_P_ ev_io *iow, int revents)
1217{ 1339{
1340 int i;
1341
1218#if EV_USE_EVENTFD 1342#if EV_USE_EVENTFD
1219 if (evfd >= 0) 1343 if (evfd >= 0)
1220 { 1344 {
1221 uint64_t counter; 1345 uint64_t counter;
1222 read (evfd, &counter, sizeof (uint64_t)); 1346 read (evfd, &counter, sizeof (uint64_t));
1223 } 1347 }
1224 else 1348 else
1225#endif 1349#endif
1226 { 1350 {
1227 char dummy; 1351 char dummy;
1352 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1228 read (evpipe [0], &dummy, 1); 1353 read (evpipe [0], &dummy, 1);
1229 } 1354 }
1230 1355
1231 if (gotsig && ev_is_default_loop (EV_A)) 1356 if (sig_pending)
1232 { 1357 {
1233 int signum; 1358 sig_pending = 0;
1234 gotsig = 0;
1235 1359
1236 for (signum = EV_NSIG - 1; signum--; ) 1360 for (i = EV_NSIG - 1; i--; )
1237 if (signals [signum].gotsig) 1361 if (expect_false (signals [i].pending))
1238 ev_feed_signal_event (EV_A_ signum + 1); 1362 ev_feed_signal_event (EV_A_ i + 1);
1239 } 1363 }
1240 1364
1241#if EV_ASYNC_ENABLE 1365#if EV_ASYNC_ENABLE
1242 if (gotasync) 1366 if (async_pending)
1243 { 1367 {
1244 int i; 1368 async_pending = 0;
1245 gotasync = 0;
1246 1369
1247 for (i = asynccnt; i--; ) 1370 for (i = asynccnt; i--; )
1248 if (asyncs [i]->sent) 1371 if (asyncs [i]->sent)
1249 { 1372 {
1250 asyncs [i]->sent = 0; 1373 asyncs [i]->sent = 0;
1254#endif 1377#endif
1255} 1378}
1256 1379
1257/*****************************************************************************/ 1380/*****************************************************************************/
1258 1381
1382void
1383ev_feed_signal (int signum)
1384{
1385#if EV_MULTIPLICITY
1386 EV_P = signals [signum - 1].loop;
1387
1388 if (!EV_A)
1389 return;
1390#endif
1391
1392 signals [signum - 1].pending = 1;
1393 evpipe_write (EV_A_ &sig_pending);
1394}
1395
1259static void 1396static void
1260ev_sighandler (int signum) 1397ev_sighandler (int signum)
1261{ 1398{
1262#if EV_MULTIPLICITY
1263 EV_P = signals [signum - 1].loop;
1264#endif
1265
1266#if _WIN32 1399#ifdef _WIN32
1267 signal (signum, ev_sighandler); 1400 signal (signum, ev_sighandler);
1268#endif 1401#endif
1269 1402
1270 signals [signum - 1].gotsig = 1; 1403 ev_feed_signal (signum);
1271 evpipe_write (EV_A_ &gotsig);
1272} 1404}
1273 1405
1274void noinline 1406void noinline
1275ev_feed_signal_event (EV_P_ int signum) 1407ev_feed_signal_event (EV_P_ int signum)
1276{ 1408{
1277 WL w; 1409 WL w;
1278 1410
1411 if (expect_false (signum <= 0 || signum > EV_NSIG))
1412 return;
1413
1414 --signum;
1415
1279#if EV_MULTIPLICITY 1416#if EV_MULTIPLICITY
1280 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1417 /* it is permissible to try to feed a signal to the wrong loop */
1281#endif 1418 /* or, likely more useful, feeding a signal nobody is waiting for */
1282 1419
1283 if (signum <= 0 || signum > EV_NSIG) 1420 if (expect_false (signals [signum].loop != EV_A))
1284 return; 1421 return;
1422#endif
1285 1423
1286 --signum;
1287
1288 signals [signum].gotsig = 0; 1424 signals [signum].pending = 0;
1289 1425
1290 for (w = signals [signum].head; w; w = w->next) 1426 for (w = signals [signum].head; w; w = w->next)
1291 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1427 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1292} 1428}
1293 1429
1309 break; 1445 break;
1310 } 1446 }
1311} 1447}
1312#endif 1448#endif
1313 1449
1450#endif
1451
1314/*****************************************************************************/ 1452/*****************************************************************************/
1315 1453
1454#if EV_CHILD_ENABLE
1316static WL childs [EV_PID_HASHSIZE]; 1455static WL childs [EV_PID_HASHSIZE];
1317
1318#ifndef _WIN32
1319 1456
1320static ev_signal childev; 1457static ev_signal childev;
1321 1458
1322#ifndef WIFCONTINUED 1459#ifndef WIFCONTINUED
1323# define WIFCONTINUED(status) 0 1460# define WIFCONTINUED(status) 0
1328child_reap (EV_P_ int chain, int pid, int status) 1465child_reap (EV_P_ int chain, int pid, int status)
1329{ 1466{
1330 ev_child *w; 1467 ev_child *w;
1331 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1468 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1332 1469
1333 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1470 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1334 { 1471 {
1335 if ((w->pid == pid || !w->pid) 1472 if ((w->pid == pid || !w->pid)
1336 && (!traced || (w->flags & 1))) 1473 && (!traced || (w->flags & 1)))
1337 { 1474 {
1338 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1475 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1363 /* make sure we are called again until all children have been reaped */ 1500 /* make sure we are called again until all children have been reaped */
1364 /* we need to do it this way so that the callback gets called before we continue */ 1501 /* we need to do it this way so that the callback gets called before we continue */
1365 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1502 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1366 1503
1367 child_reap (EV_A_ pid, pid, status); 1504 child_reap (EV_A_ pid, pid, status);
1368 if (EV_PID_HASHSIZE > 1) 1505 if ((EV_PID_HASHSIZE) > 1)
1369 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1506 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1370} 1507}
1371 1508
1372#endif 1509#endif
1373 1510
1374/*****************************************************************************/ 1511/*****************************************************************************/
1375 1512
1513#if EV_USE_IOCP
1514# include "ev_iocp.c"
1515#endif
1376#if EV_USE_PORT 1516#if EV_USE_PORT
1377# include "ev_port.c" 1517# include "ev_port.c"
1378#endif 1518#endif
1379#if EV_USE_KQUEUE 1519#if EV_USE_KQUEUE
1380# include "ev_kqueue.c" 1520# include "ev_kqueue.c"
1440#ifdef __APPLE__ 1580#ifdef __APPLE__
1441 /* only select works correctly on that "unix-certified" platform */ 1581 /* only select works correctly on that "unix-certified" platform */
1442 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1582 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1443 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1583 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1444#endif 1584#endif
1585#ifdef __FreeBSD__
1586 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1587#endif
1445 1588
1446 return flags; 1589 return flags;
1447} 1590}
1448 1591
1449unsigned int 1592unsigned int
1450ev_embeddable_backends (void) 1593ev_embeddable_backends (void)
1451{ 1594{
1452 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1595 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1453 1596
1454 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1597 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1455 /* please fix it and tell me how to detect the fix */ 1598 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1456 flags &= ~EVBACKEND_EPOLL; 1599 flags &= ~EVBACKEND_EPOLL;
1457 1600
1458 return flags; 1601 return flags;
1459} 1602}
1460 1603
1461unsigned int 1604unsigned int
1462ev_backend (EV_P) 1605ev_backend (EV_P)
1463{ 1606{
1464 return backend; 1607 return backend;
1465} 1608}
1466 1609
1467#if EV_MINIMAL < 2 1610#if EV_FEATURE_API
1468unsigned int 1611unsigned int
1469ev_loop_count (EV_P) 1612ev_iteration (EV_P)
1470{ 1613{
1471 return loop_count; 1614 return loop_count;
1472} 1615}
1473 1616
1474unsigned int 1617unsigned int
1475ev_loop_depth (EV_P) 1618ev_depth (EV_P)
1476{ 1619{
1477 return loop_depth; 1620 return loop_depth;
1478} 1621}
1479 1622
1480void 1623void
1517static void noinline 1660static void noinline
1518loop_init (EV_P_ unsigned int flags) 1661loop_init (EV_P_ unsigned int flags)
1519{ 1662{
1520 if (!backend) 1663 if (!backend)
1521 { 1664 {
1665 origflags = flags;
1666
1522#if EV_USE_REALTIME 1667#if EV_USE_REALTIME
1523 if (!have_realtime) 1668 if (!have_realtime)
1524 { 1669 {
1525 struct timespec ts; 1670 struct timespec ts;
1526 1671
1552 1697
1553 ev_rt_now = ev_time (); 1698 ev_rt_now = ev_time ();
1554 mn_now = get_clock (); 1699 mn_now = get_clock ();
1555 now_floor = mn_now; 1700 now_floor = mn_now;
1556 rtmn_diff = ev_rt_now - mn_now; 1701 rtmn_diff = ev_rt_now - mn_now;
1557#if EV_MINIMAL < 2 1702#if EV_FEATURE_API
1558 invoke_cb = ev_invoke_pending; 1703 invoke_cb = ev_invoke_pending;
1559#endif 1704#endif
1560 1705
1561 io_blocktime = 0.; 1706 io_blocktime = 0.;
1562 timeout_blocktime = 0.; 1707 timeout_blocktime = 0.;
1563 backend = 0; 1708 backend = 0;
1564 backend_fd = -1; 1709 backend_fd = -1;
1565 gotasync = 0; 1710 sig_pending = 0;
1711#if EV_ASYNC_ENABLE
1712 async_pending = 0;
1713#endif
1566#if EV_USE_INOTIFY 1714#if EV_USE_INOTIFY
1567 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 1715 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1568#endif 1716#endif
1569#if EV_USE_SIGNALFD 1717#if EV_USE_SIGNALFD
1570 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 1718 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1571#endif 1719#endif
1572 1720
1573 if (!(flags & 0x0000ffffU)) 1721 if (!(flags & EVBACKEND_MASK))
1574 flags |= ev_recommended_backends (); 1722 flags |= ev_recommended_backends ();
1575 1723
1724#if EV_USE_IOCP
1725 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1726#endif
1576#if EV_USE_PORT 1727#if EV_USE_PORT
1577 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1728 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1578#endif 1729#endif
1579#if EV_USE_KQUEUE 1730#if EV_USE_KQUEUE
1580 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1731 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
1589 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1740 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1590#endif 1741#endif
1591 1742
1592 ev_prepare_init (&pending_w, pendingcb); 1743 ev_prepare_init (&pending_w, pendingcb);
1593 1744
1745#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1594 ev_init (&pipe_w, pipecb); 1746 ev_init (&pipe_w, pipecb);
1595 ev_set_priority (&pipe_w, EV_MAXPRI); 1747 ev_set_priority (&pipe_w, EV_MAXPRI);
1748#endif
1596 } 1749 }
1597} 1750}
1598 1751
1599/* free up a loop structure */ 1752/* free up a loop structure */
1600static void noinline 1753void
1601loop_destroy (EV_P) 1754ev_loop_destroy (EV_P)
1602{ 1755{
1603 int i; 1756 int i;
1757
1758#if EV_MULTIPLICITY
1759 /* mimic free (0) */
1760 if (!EV_A)
1761 return;
1762#endif
1763
1764#if EV_CLEANUP_ENABLE
1765 /* queue cleanup watchers (and execute them) */
1766 if (expect_false (cleanupcnt))
1767 {
1768 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1769 EV_INVOKE_PENDING;
1770 }
1771#endif
1772
1773#if EV_CHILD_ENABLE
1774 if (ev_is_active (&childev))
1775 {
1776 ev_ref (EV_A); /* child watcher */
1777 ev_signal_stop (EV_A_ &childev);
1778 }
1779#endif
1604 1780
1605 if (ev_is_active (&pipe_w)) 1781 if (ev_is_active (&pipe_w))
1606 { 1782 {
1607 /*ev_ref (EV_A);*/ 1783 /*ev_ref (EV_A);*/
1608 /*ev_io_stop (EV_A_ &pipe_w);*/ 1784 /*ev_io_stop (EV_A_ &pipe_w);*/
1612 close (evfd); 1788 close (evfd);
1613#endif 1789#endif
1614 1790
1615 if (evpipe [0] >= 0) 1791 if (evpipe [0] >= 0)
1616 { 1792 {
1617 close (evpipe [0]); 1793 EV_WIN32_CLOSE_FD (evpipe [0]);
1618 close (evpipe [1]); 1794 EV_WIN32_CLOSE_FD (evpipe [1]);
1619 } 1795 }
1620 } 1796 }
1621 1797
1622#if EV_USE_SIGNALFD 1798#if EV_USE_SIGNALFD
1623 if (ev_is_active (&sigfd_w)) 1799 if (ev_is_active (&sigfd_w))
1624 {
1625 /*ev_ref (EV_A);*/
1626 /*ev_io_stop (EV_A_ &sigfd_w);*/
1627
1628 close (sigfd); 1800 close (sigfd);
1629 }
1630#endif 1801#endif
1631 1802
1632#if EV_USE_INOTIFY 1803#if EV_USE_INOTIFY
1633 if (fs_fd >= 0) 1804 if (fs_fd >= 0)
1634 close (fs_fd); 1805 close (fs_fd);
1635#endif 1806#endif
1636 1807
1637 if (backend_fd >= 0) 1808 if (backend_fd >= 0)
1638 close (backend_fd); 1809 close (backend_fd);
1639 1810
1811#if EV_USE_IOCP
1812 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1813#endif
1640#if EV_USE_PORT 1814#if EV_USE_PORT
1641 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1815 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1642#endif 1816#endif
1643#if EV_USE_KQUEUE 1817#if EV_USE_KQUEUE
1644 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1818 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1671 array_free (periodic, EMPTY); 1845 array_free (periodic, EMPTY);
1672#endif 1846#endif
1673#if EV_FORK_ENABLE 1847#if EV_FORK_ENABLE
1674 array_free (fork, EMPTY); 1848 array_free (fork, EMPTY);
1675#endif 1849#endif
1850#if EV_CLEANUP_ENABLE
1851 array_free (cleanup, EMPTY);
1852#endif
1676 array_free (prepare, EMPTY); 1853 array_free (prepare, EMPTY);
1677 array_free (check, EMPTY); 1854 array_free (check, EMPTY);
1678#if EV_ASYNC_ENABLE 1855#if EV_ASYNC_ENABLE
1679 array_free (async, EMPTY); 1856 array_free (async, EMPTY);
1680#endif 1857#endif
1681 1858
1682 backend = 0; 1859 backend = 0;
1860
1861#if EV_MULTIPLICITY
1862 if (ev_is_default_loop (EV_A))
1863#endif
1864 ev_default_loop_ptr = 0;
1865#if EV_MULTIPLICITY
1866 else
1867 ev_free (EV_A);
1868#endif
1683} 1869}
1684 1870
1685#if EV_USE_INOTIFY 1871#if EV_USE_INOTIFY
1686inline_size void infy_fork (EV_P); 1872inline_size void infy_fork (EV_P);
1687#endif 1873#endif
1704 1890
1705 if (ev_is_active (&pipe_w)) 1891 if (ev_is_active (&pipe_w))
1706 { 1892 {
1707 /* this "locks" the handlers against writing to the pipe */ 1893 /* this "locks" the handlers against writing to the pipe */
1708 /* while we modify the fd vars */ 1894 /* while we modify the fd vars */
1709 gotsig = 1; 1895 sig_pending = 1;
1710#if EV_ASYNC_ENABLE 1896#if EV_ASYNC_ENABLE
1711 gotasync = 1; 1897 async_pending = 1;
1712#endif 1898#endif
1713 1899
1714 ev_ref (EV_A); 1900 ev_ref (EV_A);
1715 ev_io_stop (EV_A_ &pipe_w); 1901 ev_io_stop (EV_A_ &pipe_w);
1716 1902
1719 close (evfd); 1905 close (evfd);
1720#endif 1906#endif
1721 1907
1722 if (evpipe [0] >= 0) 1908 if (evpipe [0] >= 0)
1723 { 1909 {
1724 close (evpipe [0]); 1910 EV_WIN32_CLOSE_FD (evpipe [0]);
1725 close (evpipe [1]); 1911 EV_WIN32_CLOSE_FD (evpipe [1]);
1726 } 1912 }
1727 1913
1914#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1728 evpipe_init (EV_A); 1915 evpipe_init (EV_A);
1729 /* now iterate over everything, in case we missed something */ 1916 /* now iterate over everything, in case we missed something */
1730 pipecb (EV_A_ &pipe_w, EV_READ); 1917 pipecb (EV_A_ &pipe_w, EV_READ);
1918#endif
1731 } 1919 }
1732 1920
1733 postfork = 0; 1921 postfork = 0;
1734} 1922}
1735 1923
1744 loop_init (EV_A_ flags); 1932 loop_init (EV_A_ flags);
1745 1933
1746 if (ev_backend (EV_A)) 1934 if (ev_backend (EV_A))
1747 return EV_A; 1935 return EV_A;
1748 1936
1937 ev_free (EV_A);
1749 return 0; 1938 return 0;
1750} 1939}
1751 1940
1752void
1753ev_loop_destroy (EV_P)
1754{
1755 loop_destroy (EV_A);
1756 ev_free (loop);
1757}
1758
1759void
1760ev_loop_fork (EV_P)
1761{
1762 postfork = 1; /* must be in line with ev_default_fork */
1763}
1764#endif /* multiplicity */ 1941#endif /* multiplicity */
1765 1942
1766#if EV_VERIFY 1943#if EV_VERIFY
1767static void noinline 1944static void noinline
1768verify_watcher (EV_P_ W w) 1945verify_watcher (EV_P_ W w)
1797 verify_watcher (EV_A_ ws [cnt]); 1974 verify_watcher (EV_A_ ws [cnt]);
1798 } 1975 }
1799} 1976}
1800#endif 1977#endif
1801 1978
1802#if EV_MINIMAL < 2 1979#if EV_FEATURE_API
1803void 1980void
1804ev_loop_verify (EV_P) 1981ev_verify (EV_P)
1805{ 1982{
1806#if EV_VERIFY 1983#if EV_VERIFY
1807 int i; 1984 int i;
1808 WL w; 1985 WL w;
1809 1986
1843#if EV_FORK_ENABLE 2020#if EV_FORK_ENABLE
1844 assert (forkmax >= forkcnt); 2021 assert (forkmax >= forkcnt);
1845 array_verify (EV_A_ (W *)forks, forkcnt); 2022 array_verify (EV_A_ (W *)forks, forkcnt);
1846#endif 2023#endif
1847 2024
2025#if EV_CLEANUP_ENABLE
2026 assert (cleanupmax >= cleanupcnt);
2027 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2028#endif
2029
1848#if EV_ASYNC_ENABLE 2030#if EV_ASYNC_ENABLE
1849 assert (asyncmax >= asynccnt); 2031 assert (asyncmax >= asynccnt);
1850 array_verify (EV_A_ (W *)asyncs, asynccnt); 2032 array_verify (EV_A_ (W *)asyncs, asynccnt);
1851#endif 2033#endif
1852 2034
2035#if EV_PREPARE_ENABLE
1853 assert (preparemax >= preparecnt); 2036 assert (preparemax >= preparecnt);
1854 array_verify (EV_A_ (W *)prepares, preparecnt); 2037 array_verify (EV_A_ (W *)prepares, preparecnt);
2038#endif
1855 2039
2040#if EV_CHECK_ENABLE
1856 assert (checkmax >= checkcnt); 2041 assert (checkmax >= checkcnt);
1857 array_verify (EV_A_ (W *)checks, checkcnt); 2042 array_verify (EV_A_ (W *)checks, checkcnt);
2043#endif
1858 2044
1859# if 0 2045# if 0
2046#if EV_CHILD_ENABLE
1860 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2047 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1861 for (signum = EV_NSIG; signum--; ) if (signals [signum].gotsig) 2048 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2049#endif
1862# endif 2050# endif
1863#endif 2051#endif
1864} 2052}
1865#endif 2053#endif
1866 2054
1867#if EV_MULTIPLICITY 2055#if EV_MULTIPLICITY
1868struct ev_loop * 2056struct ev_loop *
1869ev_default_loop_init (unsigned int flags)
1870#else 2057#else
1871int 2058int
2059#endif
1872ev_default_loop (unsigned int flags) 2060ev_default_loop (unsigned int flags)
1873#endif
1874{ 2061{
1875 if (!ev_default_loop_ptr) 2062 if (!ev_default_loop_ptr)
1876 { 2063 {
1877#if EV_MULTIPLICITY 2064#if EV_MULTIPLICITY
1878 EV_P = ev_default_loop_ptr = &default_loop_struct; 2065 EV_P = ev_default_loop_ptr = &default_loop_struct;
1882 2069
1883 loop_init (EV_A_ flags); 2070 loop_init (EV_A_ flags);
1884 2071
1885 if (ev_backend (EV_A)) 2072 if (ev_backend (EV_A))
1886 { 2073 {
1887#ifndef _WIN32 2074#if EV_CHILD_ENABLE
1888 ev_signal_init (&childev, childcb, SIGCHLD); 2075 ev_signal_init (&childev, childcb, SIGCHLD);
1889 ev_set_priority (&childev, EV_MAXPRI); 2076 ev_set_priority (&childev, EV_MAXPRI);
1890 ev_signal_start (EV_A_ &childev); 2077 ev_signal_start (EV_A_ &childev);
1891 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2078 ev_unref (EV_A); /* child watcher should not keep loop alive */
1892#endif 2079#endif
1897 2084
1898 return ev_default_loop_ptr; 2085 return ev_default_loop_ptr;
1899} 2086}
1900 2087
1901void 2088void
1902ev_default_destroy (void) 2089ev_loop_fork (EV_P)
1903{ 2090{
1904#if EV_MULTIPLICITY
1905 EV_P = ev_default_loop_ptr;
1906#endif
1907
1908 ev_default_loop_ptr = 0;
1909
1910#ifndef _WIN32
1911 ev_ref (EV_A); /* child watcher */
1912 ev_signal_stop (EV_A_ &childev);
1913#endif
1914
1915 loop_destroy (EV_A);
1916}
1917
1918void
1919ev_default_fork (void)
1920{
1921#if EV_MULTIPLICITY
1922 EV_P = ev_default_loop_ptr;
1923#endif
1924
1925 postfork = 1; /* must be in line with ev_loop_fork */ 2091 postfork = 1; /* must be in line with ev_default_fork */
1926} 2092}
1927 2093
1928/*****************************************************************************/ 2094/*****************************************************************************/
1929 2095
1930void 2096void
1952 2118
1953 for (pri = NUMPRI; pri--; ) 2119 for (pri = NUMPRI; pri--; )
1954 while (pendingcnt [pri]) 2120 while (pendingcnt [pri])
1955 { 2121 {
1956 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2122 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1957
1958 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1959 /* ^ this is no longer true, as pending_w could be here */
1960 2123
1961 p->w->pending = 0; 2124 p->w->pending = 0;
1962 EV_CB_INVOKE (p->w, p->events); 2125 EV_CB_INVOKE (p->w, p->events);
1963 EV_FREQUENT_CHECK; 2126 EV_FREQUENT_CHECK;
1964 } 2127 }
2021 EV_FREQUENT_CHECK; 2184 EV_FREQUENT_CHECK;
2022 feed_reverse (EV_A_ (W)w); 2185 feed_reverse (EV_A_ (W)w);
2023 } 2186 }
2024 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2187 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2025 2188
2026 feed_reverse_done (EV_A_ EV_TIMEOUT); 2189 feed_reverse_done (EV_A_ EV_TIMER);
2027 } 2190 }
2028} 2191}
2029 2192
2030#if EV_PERIODIC_ENABLE 2193#if EV_PERIODIC_ENABLE
2031/* make periodics pending */ 2194/* make periodics pending */
2084 feed_reverse_done (EV_A_ EV_PERIODIC); 2247 feed_reverse_done (EV_A_ EV_PERIODIC);
2085 } 2248 }
2086} 2249}
2087 2250
2088/* simply recalculate all periodics */ 2251/* simply recalculate all periodics */
2089/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2252/* TODO: maybe ensure that at least one event happens when jumping forward? */
2090static void noinline 2253static void noinline
2091periodics_reschedule (EV_P) 2254periodics_reschedule (EV_P)
2092{ 2255{
2093 int i; 2256 int i;
2094 2257
2122 ANHE_at_cache (*he); 2285 ANHE_at_cache (*he);
2123 } 2286 }
2124} 2287}
2125 2288
2126/* fetch new monotonic and realtime times from the kernel */ 2289/* fetch new monotonic and realtime times from the kernel */
2127/* also detetc if there was a timejump, and act accordingly */ 2290/* also detect if there was a timejump, and act accordingly */
2128inline_speed void 2291inline_speed void
2129time_update (EV_P_ ev_tstamp max_block) 2292time_update (EV_P_ ev_tstamp max_block)
2130{ 2293{
2131#if EV_USE_MONOTONIC 2294#if EV_USE_MONOTONIC
2132 if (expect_true (have_monotonic)) 2295 if (expect_true (have_monotonic))
2190 mn_now = ev_rt_now; 2353 mn_now = ev_rt_now;
2191 } 2354 }
2192} 2355}
2193 2356
2194void 2357void
2195ev_loop (EV_P_ int flags) 2358ev_run (EV_P_ int flags)
2196{ 2359{
2197#if EV_MINIMAL < 2 2360#if EV_FEATURE_API
2198 ++loop_depth; 2361 ++loop_depth;
2199#endif 2362#endif
2200 2363
2201 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2364 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2202 2365
2203 loop_done = EVUNLOOP_CANCEL; 2366 loop_done = EVBREAK_CANCEL;
2204 2367
2205 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2368 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2206 2369
2207 do 2370 do
2208 { 2371 {
2209#if EV_VERIFY >= 2 2372#if EV_VERIFY >= 2
2210 ev_loop_verify (EV_A); 2373 ev_verify (EV_A);
2211#endif 2374#endif
2212 2375
2213#ifndef _WIN32 2376#ifndef _WIN32
2214 if (expect_false (curpid)) /* penalise the forking check even more */ 2377 if (expect_false (curpid)) /* penalise the forking check even more */
2215 if (expect_false (getpid () != curpid)) 2378 if (expect_false (getpid () != curpid))
2227 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2390 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2228 EV_INVOKE_PENDING; 2391 EV_INVOKE_PENDING;
2229 } 2392 }
2230#endif 2393#endif
2231 2394
2395#if EV_PREPARE_ENABLE
2232 /* queue prepare watchers (and execute them) */ 2396 /* queue prepare watchers (and execute them) */
2233 if (expect_false (preparecnt)) 2397 if (expect_false (preparecnt))
2234 { 2398 {
2235 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2399 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2236 EV_INVOKE_PENDING; 2400 EV_INVOKE_PENDING;
2237 } 2401 }
2402#endif
2238 2403
2239 if (expect_false (loop_done)) 2404 if (expect_false (loop_done))
2240 break; 2405 break;
2241 2406
2242 /* we might have forked, so reify kernel state if necessary */ 2407 /* we might have forked, so reify kernel state if necessary */
2249 /* calculate blocking time */ 2414 /* calculate blocking time */
2250 { 2415 {
2251 ev_tstamp waittime = 0.; 2416 ev_tstamp waittime = 0.;
2252 ev_tstamp sleeptime = 0.; 2417 ev_tstamp sleeptime = 0.;
2253 2418
2419 /* remember old timestamp for io_blocktime calculation */
2420 ev_tstamp prev_mn_now = mn_now;
2421
2422 /* update time to cancel out callback processing overhead */
2423 time_update (EV_A_ 1e100);
2424
2254 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2425 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2255 { 2426 {
2256 /* remember old timestamp for io_blocktime calculation */
2257 ev_tstamp prev_mn_now = mn_now;
2258
2259 /* update time to cancel out callback processing overhead */
2260 time_update (EV_A_ 1e100);
2261
2262 waittime = MAX_BLOCKTIME; 2427 waittime = MAX_BLOCKTIME;
2263 2428
2264 if (timercnt) 2429 if (timercnt)
2265 { 2430 {
2266 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2431 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
2293 waittime -= sleeptime; 2458 waittime -= sleeptime;
2294 } 2459 }
2295 } 2460 }
2296 } 2461 }
2297 2462
2298#if EV_MINIMAL < 2 2463#if EV_FEATURE_API
2299 ++loop_count; 2464 ++loop_count;
2300#endif 2465#endif
2301 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2466 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2302 backend_poll (EV_A_ waittime); 2467 backend_poll (EV_A_ waittime);
2303 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2468 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2304 2469
2305 /* update ev_rt_now, do magic */ 2470 /* update ev_rt_now, do magic */
2306 time_update (EV_A_ waittime + sleeptime); 2471 time_update (EV_A_ waittime + sleeptime);
2307 } 2472 }
2308 2473
2315#if EV_IDLE_ENABLE 2480#if EV_IDLE_ENABLE
2316 /* queue idle watchers unless other events are pending */ 2481 /* queue idle watchers unless other events are pending */
2317 idle_reify (EV_A); 2482 idle_reify (EV_A);
2318#endif 2483#endif
2319 2484
2485#if EV_CHECK_ENABLE
2320 /* queue check watchers, to be executed first */ 2486 /* queue check watchers, to be executed first */
2321 if (expect_false (checkcnt)) 2487 if (expect_false (checkcnt))
2322 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2488 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2489#endif
2323 2490
2324 EV_INVOKE_PENDING; 2491 EV_INVOKE_PENDING;
2325 } 2492 }
2326 while (expect_true ( 2493 while (expect_true (
2327 activecnt 2494 activecnt
2328 && !loop_done 2495 && !loop_done
2329 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2496 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2330 )); 2497 ));
2331 2498
2332 if (loop_done == EVUNLOOP_ONE) 2499 if (loop_done == EVBREAK_ONE)
2333 loop_done = EVUNLOOP_CANCEL; 2500 loop_done = EVBREAK_CANCEL;
2334 2501
2335#if EV_MINIMAL < 2 2502#if EV_FEATURE_API
2336 --loop_depth; 2503 --loop_depth;
2337#endif 2504#endif
2338} 2505}
2339 2506
2340void 2507void
2341ev_unloop (EV_P_ int how) 2508ev_break (EV_P_ int how)
2342{ 2509{
2343 loop_done = how; 2510 loop_done = how;
2344} 2511}
2345 2512
2346void 2513void
2393inline_size void 2560inline_size void
2394wlist_del (WL *head, WL elem) 2561wlist_del (WL *head, WL elem)
2395{ 2562{
2396 while (*head) 2563 while (*head)
2397 { 2564 {
2398 if (*head == elem) 2565 if (expect_true (*head == elem))
2399 { 2566 {
2400 *head = elem->next; 2567 *head = elem->next;
2401 return; 2568 break;
2402 } 2569 }
2403 2570
2404 head = &(*head)->next; 2571 head = &(*head)->next;
2405 } 2572 }
2406} 2573}
2466 2633
2467 if (expect_false (ev_is_active (w))) 2634 if (expect_false (ev_is_active (w)))
2468 return; 2635 return;
2469 2636
2470 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2637 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2471 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2638 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2472 2639
2473 EV_FREQUENT_CHECK; 2640 EV_FREQUENT_CHECK;
2474 2641
2475 ev_start (EV_A_ (W)w, 1); 2642 ev_start (EV_A_ (W)w, 1);
2476 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2643 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2494 EV_FREQUENT_CHECK; 2661 EV_FREQUENT_CHECK;
2495 2662
2496 wlist_del (&anfds[w->fd].head, (WL)w); 2663 wlist_del (&anfds[w->fd].head, (WL)w);
2497 ev_stop (EV_A_ (W)w); 2664 ev_stop (EV_A_ (W)w);
2498 2665
2499 fd_change (EV_A_ w->fd, 1); 2666 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2500 2667
2501 EV_FREQUENT_CHECK; 2668 EV_FREQUENT_CHECK;
2502} 2669}
2503 2670
2504void noinline 2671void noinline
2546 timers [active] = timers [timercnt + HEAP0]; 2713 timers [active] = timers [timercnt + HEAP0];
2547 adjustheap (timers, timercnt, active); 2714 adjustheap (timers, timercnt, active);
2548 } 2715 }
2549 } 2716 }
2550 2717
2551 EV_FREQUENT_CHECK;
2552
2553 ev_at (w) -= mn_now; 2718 ev_at (w) -= mn_now;
2554 2719
2555 ev_stop (EV_A_ (W)w); 2720 ev_stop (EV_A_ (W)w);
2721
2722 EV_FREQUENT_CHECK;
2556} 2723}
2557 2724
2558void noinline 2725void noinline
2559ev_timer_again (EV_P_ ev_timer *w) 2726ev_timer_again (EV_P_ ev_timer *w)
2560{ 2727{
2639 periodics [active] = periodics [periodiccnt + HEAP0]; 2806 periodics [active] = periodics [periodiccnt + HEAP0];
2640 adjustheap (periodics, periodiccnt, active); 2807 adjustheap (periodics, periodiccnt, active);
2641 } 2808 }
2642 } 2809 }
2643 2810
2644 EV_FREQUENT_CHECK;
2645
2646 ev_stop (EV_A_ (W)w); 2811 ev_stop (EV_A_ (W)w);
2812
2813 EV_FREQUENT_CHECK;
2647} 2814}
2648 2815
2649void noinline 2816void noinline
2650ev_periodic_again (EV_P_ ev_periodic *w) 2817ev_periodic_again (EV_P_ ev_periodic *w)
2651{ 2818{
2657 2824
2658#ifndef SA_RESTART 2825#ifndef SA_RESTART
2659# define SA_RESTART 0 2826# define SA_RESTART 0
2660#endif 2827#endif
2661 2828
2829#if EV_SIGNAL_ENABLE
2830
2662void noinline 2831void noinline
2663ev_signal_start (EV_P_ ev_signal *w) 2832ev_signal_start (EV_P_ ev_signal *w)
2664{ 2833{
2665 if (expect_false (ev_is_active (w))) 2834 if (expect_false (ev_is_active (w)))
2666 return; 2835 return;
2667 2836
2668 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 2837 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2669 2838
2670#if EV_MULTIPLICITY 2839#if EV_MULTIPLICITY
2671 assert (("libev: tried to attach to a signal from two different loops", 2840 assert (("libev: a signal must not be attached to two different loops",
2672 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 2841 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2673 2842
2674 signals [w->signum - 1].loop = EV_A; 2843 signals [w->signum - 1].loop = EV_A;
2675#endif 2844#endif
2676 2845
2712 if (!((WL)w)->next) 2881 if (!((WL)w)->next)
2713# if EV_USE_SIGNALFD 2882# if EV_USE_SIGNALFD
2714 if (sigfd < 0) /*TODO*/ 2883 if (sigfd < 0) /*TODO*/
2715# endif 2884# endif
2716 { 2885 {
2717# if _WIN32 2886# ifdef _WIN32
2887 evpipe_init (EV_A);
2888
2718 signal (w->signum, ev_sighandler); 2889 signal (w->signum, ev_sighandler);
2719# else 2890# else
2720 struct sigaction sa; 2891 struct sigaction sa;
2721 2892
2722 evpipe_init (EV_A); 2893 evpipe_init (EV_A);
2724 sa.sa_handler = ev_sighandler; 2895 sa.sa_handler = ev_sighandler;
2725 sigfillset (&sa.sa_mask); 2896 sigfillset (&sa.sa_mask);
2726 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2897 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2727 sigaction (w->signum, &sa, 0); 2898 sigaction (w->signum, &sa, 0);
2728 2899
2900 if (origflags & EVFLAG_NOSIGMASK)
2901 {
2729 sigemptyset (&sa.sa_mask); 2902 sigemptyset (&sa.sa_mask);
2730 sigaddset (&sa.sa_mask, w->signum); 2903 sigaddset (&sa.sa_mask, w->signum);
2731 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 2904 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2905 }
2732#endif 2906#endif
2733 } 2907 }
2734 2908
2735 EV_FREQUENT_CHECK; 2909 EV_FREQUENT_CHECK;
2736} 2910}
2747 wlist_del (&signals [w->signum - 1].head, (WL)w); 2921 wlist_del (&signals [w->signum - 1].head, (WL)w);
2748 ev_stop (EV_A_ (W)w); 2922 ev_stop (EV_A_ (W)w);
2749 2923
2750 if (!signals [w->signum - 1].head) 2924 if (!signals [w->signum - 1].head)
2751 { 2925 {
2752 #if EV_MULTIPLICITY 2926#if EV_MULTIPLICITY
2753 signals [w->signum - 1].loop = 0; /* unattach from signal */ 2927 signals [w->signum - 1].loop = 0; /* unattach from signal */
2754 #endif 2928#endif
2755 #if EV_USE_SIGNALFD 2929#if EV_USE_SIGNALFD
2756 if (sigfd >= 0) 2930 if (sigfd >= 0)
2757 { 2931 {
2758 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 2932 sigset_t ss;
2933
2934 sigemptyset (&ss);
2935 sigaddset (&ss, w->signum);
2759 sigdelset (&sigfd_set, w->signum); 2936 sigdelset (&sigfd_set, w->signum);
2937
2760 signalfd (sigfd, &sigfd_set, 0); 2938 signalfd (sigfd, &sigfd_set, 0);
2761 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 2939 sigprocmask (SIG_UNBLOCK, &ss, 0);
2762 /*TODO: maybe unblock signal? */
2763 } 2940 }
2764 else 2941 else
2765 #endif 2942#endif
2766 signal (w->signum, SIG_DFL); 2943 signal (w->signum, SIG_DFL);
2767 } 2944 }
2768 2945
2769 EV_FREQUENT_CHECK; 2946 EV_FREQUENT_CHECK;
2770} 2947}
2948
2949#endif
2950
2951#if EV_CHILD_ENABLE
2771 2952
2772void 2953void
2773ev_child_start (EV_P_ ev_child *w) 2954ev_child_start (EV_P_ ev_child *w)
2774{ 2955{
2775#if EV_MULTIPLICITY 2956#if EV_MULTIPLICITY
2779 return; 2960 return;
2780 2961
2781 EV_FREQUENT_CHECK; 2962 EV_FREQUENT_CHECK;
2782 2963
2783 ev_start (EV_A_ (W)w, 1); 2964 ev_start (EV_A_ (W)w, 1);
2784 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2965 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2785 2966
2786 EV_FREQUENT_CHECK; 2967 EV_FREQUENT_CHECK;
2787} 2968}
2788 2969
2789void 2970void
2793 if (expect_false (!ev_is_active (w))) 2974 if (expect_false (!ev_is_active (w)))
2794 return; 2975 return;
2795 2976
2796 EV_FREQUENT_CHECK; 2977 EV_FREQUENT_CHECK;
2797 2978
2798 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2979 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2799 ev_stop (EV_A_ (W)w); 2980 ev_stop (EV_A_ (W)w);
2800 2981
2801 EV_FREQUENT_CHECK; 2982 EV_FREQUENT_CHECK;
2802} 2983}
2984
2985#endif
2803 2986
2804#if EV_STAT_ENABLE 2987#if EV_STAT_ENABLE
2805 2988
2806# ifdef _WIN32 2989# ifdef _WIN32
2807# undef lstat 2990# undef lstat
2813#define MIN_STAT_INTERVAL 0.1074891 2996#define MIN_STAT_INTERVAL 0.1074891
2814 2997
2815static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2998static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2816 2999
2817#if EV_USE_INOTIFY 3000#if EV_USE_INOTIFY
2818# define EV_INOTIFY_BUFSIZE 8192 3001
3002/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3003# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2819 3004
2820static void noinline 3005static void noinline
2821infy_add (EV_P_ ev_stat *w) 3006infy_add (EV_P_ ev_stat *w)
2822{ 3007{
2823 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); 3008 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);
2824 3009
2825 if (w->wd < 0) 3010 if (w->wd >= 0)
3011 {
3012 struct statfs sfs;
3013
3014 /* now local changes will be tracked by inotify, but remote changes won't */
3015 /* unless the filesystem is known to be local, we therefore still poll */
3016 /* also do poll on <2.6.25, but with normal frequency */
3017
3018 if (!fs_2625)
3019 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3020 else if (!statfs (w->path, &sfs)
3021 && (sfs.f_type == 0x1373 /* devfs */
3022 || sfs.f_type == 0xEF53 /* ext2/3 */
3023 || sfs.f_type == 0x3153464a /* jfs */
3024 || sfs.f_type == 0x52654973 /* reiser3 */
3025 || sfs.f_type == 0x01021994 /* tempfs */
3026 || sfs.f_type == 0x58465342 /* xfs */))
3027 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3028 else
3029 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2826 { 3030 }
3031 else
3032 {
3033 /* can't use inotify, continue to stat */
2827 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3034 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2828 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2829 3035
2830 /* monitor some parent directory for speedup hints */ 3036 /* if path is not there, monitor some parent directory for speedup hints */
2831 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3037 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2832 /* but an efficiency issue only */ 3038 /* but an efficiency issue only */
2833 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3039 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2834 { 3040 {
2835 char path [4096]; 3041 char path [4096];
2851 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3057 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2852 } 3058 }
2853 } 3059 }
2854 3060
2855 if (w->wd >= 0) 3061 if (w->wd >= 0)
2856 {
2857 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3062 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2858 3063
2859 /* now local changes will be tracked by inotify, but remote changes won't */ 3064 /* now re-arm timer, if required */
2860 /* unless the filesystem it known to be local, we therefore still poll */ 3065 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2861 /* also do poll on <2.6.25, but with normal frequency */
2862 struct statfs sfs;
2863
2864 if (fs_2625 && !statfs (w->path, &sfs))
2865 if (sfs.f_type == 0x1373 /* devfs */
2866 || sfs.f_type == 0xEF53 /* ext2/3 */
2867 || sfs.f_type == 0x3153464a /* jfs */
2868 || sfs.f_type == 0x52654973 /* reiser3 */
2869 || sfs.f_type == 0x01021994 /* tempfs */
2870 || sfs.f_type == 0x58465342 /* xfs */)
2871 return;
2872
2873 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2874 ev_timer_again (EV_A_ &w->timer); 3066 ev_timer_again (EV_A_ &w->timer);
2875 } 3067 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2876} 3068}
2877 3069
2878static void noinline 3070static void noinline
2879infy_del (EV_P_ ev_stat *w) 3071infy_del (EV_P_ ev_stat *w)
2880{ 3072{
2883 3075
2884 if (wd < 0) 3076 if (wd < 0)
2885 return; 3077 return;
2886 3078
2887 w->wd = -2; 3079 w->wd = -2;
2888 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3080 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2889 wlist_del (&fs_hash [slot].head, (WL)w); 3081 wlist_del (&fs_hash [slot].head, (WL)w);
2890 3082
2891 /* remove this watcher, if others are watching it, they will rearm */ 3083 /* remove this watcher, if others are watching it, they will rearm */
2892 inotify_rm_watch (fs_fd, wd); 3084 inotify_rm_watch (fs_fd, wd);
2893} 3085}
2895static void noinline 3087static void noinline
2896infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3088infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2897{ 3089{
2898 if (slot < 0) 3090 if (slot < 0)
2899 /* overflow, need to check for all hash slots */ 3091 /* overflow, need to check for all hash slots */
2900 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3092 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2901 infy_wd (EV_A_ slot, wd, ev); 3093 infy_wd (EV_A_ slot, wd, ev);
2902 else 3094 else
2903 { 3095 {
2904 WL w_; 3096 WL w_;
2905 3097
2906 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3098 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2907 { 3099 {
2908 ev_stat *w = (ev_stat *)w_; 3100 ev_stat *w = (ev_stat *)w_;
2909 w_ = w_->next; /* lets us remove this watcher and all before it */ 3101 w_ = w_->next; /* lets us remove this watcher and all before it */
2910 3102
2911 if (w->wd == wd || wd == -1) 3103 if (w->wd == wd || wd == -1)
2912 { 3104 {
2913 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3105 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2914 { 3106 {
2915 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3107 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2916 w->wd = -1; 3108 w->wd = -1;
2917 infy_add (EV_A_ w); /* re-add, no matter what */ 3109 infy_add (EV_A_ w); /* re-add, no matter what */
2918 } 3110 }
2919 3111
2920 stat_timer_cb (EV_A_ &w->timer, 0); 3112 stat_timer_cb (EV_A_ &w->timer, 0);
2925 3117
2926static void 3118static void
2927infy_cb (EV_P_ ev_io *w, int revents) 3119infy_cb (EV_P_ ev_io *w, int revents)
2928{ 3120{
2929 char buf [EV_INOTIFY_BUFSIZE]; 3121 char buf [EV_INOTIFY_BUFSIZE];
2930 struct inotify_event *ev = (struct inotify_event *)buf;
2931 int ofs; 3122 int ofs;
2932 int len = read (fs_fd, buf, sizeof (buf)); 3123 int len = read (fs_fd, buf, sizeof (buf));
2933 3124
2934 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3125 for (ofs = 0; ofs < len; )
3126 {
3127 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2935 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3128 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3129 ofs += sizeof (struct inotify_event) + ev->len;
3130 }
2936} 3131}
2937 3132
2938inline_size void 3133inline_size void
2939check_2625 (EV_P) 3134ev_check_2625 (EV_P)
2940{ 3135{
2941 /* kernels < 2.6.25 are borked 3136 /* kernels < 2.6.25 are borked
2942 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3137 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2943 */ 3138 */
2944 struct utsname buf; 3139 if (ev_linux_version () < 0x020619)
2945 int major, minor, micro;
2946
2947 if (uname (&buf))
2948 return; 3140 return;
2949 3141
2950 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2951 return;
2952
2953 if (major < 2
2954 || (major == 2 && minor < 6)
2955 || (major == 2 && minor == 6 && micro < 25))
2956 return;
2957
2958 fs_2625 = 1; 3142 fs_2625 = 1;
3143}
3144
3145inline_size int
3146infy_newfd (void)
3147{
3148#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3149 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3150 if (fd >= 0)
3151 return fd;
3152#endif
3153 return inotify_init ();
2959} 3154}
2960 3155
2961inline_size void 3156inline_size void
2962infy_init (EV_P) 3157infy_init (EV_P)
2963{ 3158{
2964 if (fs_fd != -2) 3159 if (fs_fd != -2)
2965 return; 3160 return;
2966 3161
2967 fs_fd = -1; 3162 fs_fd = -1;
2968 3163
2969 check_2625 (EV_A); 3164 ev_check_2625 (EV_A);
2970 3165
2971 fs_fd = inotify_init (); 3166 fs_fd = infy_newfd ();
2972 3167
2973 if (fs_fd >= 0) 3168 if (fs_fd >= 0)
2974 { 3169 {
3170 fd_intern (fs_fd);
2975 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3171 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2976 ev_set_priority (&fs_w, EV_MAXPRI); 3172 ev_set_priority (&fs_w, EV_MAXPRI);
2977 ev_io_start (EV_A_ &fs_w); 3173 ev_io_start (EV_A_ &fs_w);
3174 ev_unref (EV_A);
2978 } 3175 }
2979} 3176}
2980 3177
2981inline_size void 3178inline_size void
2982infy_fork (EV_P) 3179infy_fork (EV_P)
2984 int slot; 3181 int slot;
2985 3182
2986 if (fs_fd < 0) 3183 if (fs_fd < 0)
2987 return; 3184 return;
2988 3185
3186 ev_ref (EV_A);
3187 ev_io_stop (EV_A_ &fs_w);
2989 close (fs_fd); 3188 close (fs_fd);
2990 fs_fd = inotify_init (); 3189 fs_fd = infy_newfd ();
2991 3190
3191 if (fs_fd >= 0)
3192 {
3193 fd_intern (fs_fd);
3194 ev_io_set (&fs_w, fs_fd, EV_READ);
3195 ev_io_start (EV_A_ &fs_w);
3196 ev_unref (EV_A);
3197 }
3198
2992 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3199 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2993 { 3200 {
2994 WL w_ = fs_hash [slot].head; 3201 WL w_ = fs_hash [slot].head;
2995 fs_hash [slot].head = 0; 3202 fs_hash [slot].head = 0;
2996 3203
2997 while (w_) 3204 while (w_)
3002 w->wd = -1; 3209 w->wd = -1;
3003 3210
3004 if (fs_fd >= 0) 3211 if (fs_fd >= 0)
3005 infy_add (EV_A_ w); /* re-add, no matter what */ 3212 infy_add (EV_A_ w); /* re-add, no matter what */
3006 else 3213 else
3214 {
3215 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3216 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3007 ev_timer_again (EV_A_ &w->timer); 3217 ev_timer_again (EV_A_ &w->timer);
3218 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3219 }
3008 } 3220 }
3009 } 3221 }
3010} 3222}
3011 3223
3012#endif 3224#endif
3029static void noinline 3241static void noinline
3030stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3242stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3031{ 3243{
3032 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3244 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3033 3245
3034 /* we copy this here each the time so that */ 3246 ev_statdata prev = w->attr;
3035 /* prev has the old value when the callback gets invoked */
3036 w->prev = w->attr;
3037 ev_stat_stat (EV_A_ w); 3247 ev_stat_stat (EV_A_ w);
3038 3248
3039 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3249 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3040 if ( 3250 if (
3041 w->prev.st_dev != w->attr.st_dev 3251 prev.st_dev != w->attr.st_dev
3042 || w->prev.st_ino != w->attr.st_ino 3252 || prev.st_ino != w->attr.st_ino
3043 || w->prev.st_mode != w->attr.st_mode 3253 || prev.st_mode != w->attr.st_mode
3044 || w->prev.st_nlink != w->attr.st_nlink 3254 || prev.st_nlink != w->attr.st_nlink
3045 || w->prev.st_uid != w->attr.st_uid 3255 || prev.st_uid != w->attr.st_uid
3046 || w->prev.st_gid != w->attr.st_gid 3256 || prev.st_gid != w->attr.st_gid
3047 || w->prev.st_rdev != w->attr.st_rdev 3257 || prev.st_rdev != w->attr.st_rdev
3048 || w->prev.st_size != w->attr.st_size 3258 || prev.st_size != w->attr.st_size
3049 || w->prev.st_atime != w->attr.st_atime 3259 || prev.st_atime != w->attr.st_atime
3050 || w->prev.st_mtime != w->attr.st_mtime 3260 || prev.st_mtime != w->attr.st_mtime
3051 || w->prev.st_ctime != w->attr.st_ctime 3261 || prev.st_ctime != w->attr.st_ctime
3052 ) { 3262 ) {
3263 /* we only update w->prev on actual differences */
3264 /* in case we test more often than invoke the callback, */
3265 /* to ensure that prev is always different to attr */
3266 w->prev = prev;
3267
3053 #if EV_USE_INOTIFY 3268 #if EV_USE_INOTIFY
3054 if (fs_fd >= 0) 3269 if (fs_fd >= 0)
3055 { 3270 {
3056 infy_del (EV_A_ w); 3271 infy_del (EV_A_ w);
3057 infy_add (EV_A_ w); 3272 infy_add (EV_A_ w);
3082 3297
3083 if (fs_fd >= 0) 3298 if (fs_fd >= 0)
3084 infy_add (EV_A_ w); 3299 infy_add (EV_A_ w);
3085 else 3300 else
3086#endif 3301#endif
3302 {
3087 ev_timer_again (EV_A_ &w->timer); 3303 ev_timer_again (EV_A_ &w->timer);
3304 ev_unref (EV_A);
3305 }
3088 3306
3089 ev_start (EV_A_ (W)w, 1); 3307 ev_start (EV_A_ (W)w, 1);
3090 3308
3091 EV_FREQUENT_CHECK; 3309 EV_FREQUENT_CHECK;
3092} 3310}
3101 EV_FREQUENT_CHECK; 3319 EV_FREQUENT_CHECK;
3102 3320
3103#if EV_USE_INOTIFY 3321#if EV_USE_INOTIFY
3104 infy_del (EV_A_ w); 3322 infy_del (EV_A_ w);
3105#endif 3323#endif
3324
3325 if (ev_is_active (&w->timer))
3326 {
3327 ev_ref (EV_A);
3106 ev_timer_stop (EV_A_ &w->timer); 3328 ev_timer_stop (EV_A_ &w->timer);
3329 }
3107 3330
3108 ev_stop (EV_A_ (W)w); 3331 ev_stop (EV_A_ (W)w);
3109 3332
3110 EV_FREQUENT_CHECK; 3333 EV_FREQUENT_CHECK;
3111} 3334}
3156 3379
3157 EV_FREQUENT_CHECK; 3380 EV_FREQUENT_CHECK;
3158} 3381}
3159#endif 3382#endif
3160 3383
3384#if EV_PREPARE_ENABLE
3161void 3385void
3162ev_prepare_start (EV_P_ ev_prepare *w) 3386ev_prepare_start (EV_P_ ev_prepare *w)
3163{ 3387{
3164 if (expect_false (ev_is_active (w))) 3388 if (expect_false (ev_is_active (w)))
3165 return; 3389 return;
3191 3415
3192 ev_stop (EV_A_ (W)w); 3416 ev_stop (EV_A_ (W)w);
3193 3417
3194 EV_FREQUENT_CHECK; 3418 EV_FREQUENT_CHECK;
3195} 3419}
3420#endif
3196 3421
3422#if EV_CHECK_ENABLE
3197void 3423void
3198ev_check_start (EV_P_ ev_check *w) 3424ev_check_start (EV_P_ ev_check *w)
3199{ 3425{
3200 if (expect_false (ev_is_active (w))) 3426 if (expect_false (ev_is_active (w)))
3201 return; 3427 return;
3227 3453
3228 ev_stop (EV_A_ (W)w); 3454 ev_stop (EV_A_ (W)w);
3229 3455
3230 EV_FREQUENT_CHECK; 3456 EV_FREQUENT_CHECK;
3231} 3457}
3458#endif
3232 3459
3233#if EV_EMBED_ENABLE 3460#if EV_EMBED_ENABLE
3234void noinline 3461void noinline
3235ev_embed_sweep (EV_P_ ev_embed *w) 3462ev_embed_sweep (EV_P_ ev_embed *w)
3236{ 3463{
3237 ev_loop (w->other, EVLOOP_NONBLOCK); 3464 ev_run (w->other, EVRUN_NOWAIT);
3238} 3465}
3239 3466
3240static void 3467static void
3241embed_io_cb (EV_P_ ev_io *io, int revents) 3468embed_io_cb (EV_P_ ev_io *io, int revents)
3242{ 3469{
3243 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3470 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3244 3471
3245 if (ev_cb (w)) 3472 if (ev_cb (w))
3246 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3473 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3247 else 3474 else
3248 ev_loop (w->other, EVLOOP_NONBLOCK); 3475 ev_run (w->other, EVRUN_NOWAIT);
3249} 3476}
3250 3477
3251static void 3478static void
3252embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3479embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3253{ 3480{
3257 EV_P = w->other; 3484 EV_P = w->other;
3258 3485
3259 while (fdchangecnt) 3486 while (fdchangecnt)
3260 { 3487 {
3261 fd_reify (EV_A); 3488 fd_reify (EV_A);
3262 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3489 ev_run (EV_A_ EVRUN_NOWAIT);
3263 } 3490 }
3264 } 3491 }
3265} 3492}
3266 3493
3267static void 3494static void
3273 3500
3274 { 3501 {
3275 EV_P = w->other; 3502 EV_P = w->other;
3276 3503
3277 ev_loop_fork (EV_A); 3504 ev_loop_fork (EV_A);
3278 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3505 ev_run (EV_A_ EVRUN_NOWAIT);
3279 } 3506 }
3280 3507
3281 ev_embed_start (EV_A_ w); 3508 ev_embed_start (EV_A_ w);
3282} 3509}
3283 3510
3331 3558
3332 ev_io_stop (EV_A_ &w->io); 3559 ev_io_stop (EV_A_ &w->io);
3333 ev_prepare_stop (EV_A_ &w->prepare); 3560 ev_prepare_stop (EV_A_ &w->prepare);
3334 ev_fork_stop (EV_A_ &w->fork); 3561 ev_fork_stop (EV_A_ &w->fork);
3335 3562
3563 ev_stop (EV_A_ (W)w);
3564
3336 EV_FREQUENT_CHECK; 3565 EV_FREQUENT_CHECK;
3337} 3566}
3338#endif 3567#endif
3339 3568
3340#if EV_FORK_ENABLE 3569#if EV_FORK_ENABLE
3373 3602
3374 EV_FREQUENT_CHECK; 3603 EV_FREQUENT_CHECK;
3375} 3604}
3376#endif 3605#endif
3377 3606
3378#if EV_ASYNC_ENABLE 3607#if EV_CLEANUP_ENABLE
3379void 3608void
3380ev_async_start (EV_P_ ev_async *w) 3609ev_cleanup_start (EV_P_ ev_cleanup *w)
3381{ 3610{
3382 if (expect_false (ev_is_active (w))) 3611 if (expect_false (ev_is_active (w)))
3383 return; 3612 return;
3613
3614 EV_FREQUENT_CHECK;
3615
3616 ev_start (EV_A_ (W)w, ++cleanupcnt);
3617 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3618 cleanups [cleanupcnt - 1] = w;
3619
3620 /* cleanup watchers should never keep a refcount on the loop */
3621 ev_unref (EV_A);
3622 EV_FREQUENT_CHECK;
3623}
3624
3625void
3626ev_cleanup_stop (EV_P_ ev_cleanup *w)
3627{
3628 clear_pending (EV_A_ (W)w);
3629 if (expect_false (!ev_is_active (w)))
3630 return;
3631
3632 EV_FREQUENT_CHECK;
3633 ev_ref (EV_A);
3634
3635 {
3636 int active = ev_active (w);
3637
3638 cleanups [active - 1] = cleanups [--cleanupcnt];
3639 ev_active (cleanups [active - 1]) = active;
3640 }
3641
3642 ev_stop (EV_A_ (W)w);
3643
3644 EV_FREQUENT_CHECK;
3645}
3646#endif
3647
3648#if EV_ASYNC_ENABLE
3649void
3650ev_async_start (EV_P_ ev_async *w)
3651{
3652 if (expect_false (ev_is_active (w)))
3653 return;
3654
3655 w->sent = 0;
3384 3656
3385 evpipe_init (EV_A); 3657 evpipe_init (EV_A);
3386 3658
3387 EV_FREQUENT_CHECK; 3659 EV_FREQUENT_CHECK;
3388 3660
3416 3688
3417void 3689void
3418ev_async_send (EV_P_ ev_async *w) 3690ev_async_send (EV_P_ ev_async *w)
3419{ 3691{
3420 w->sent = 1; 3692 w->sent = 1;
3421 evpipe_write (EV_A_ &gotasync); 3693 evpipe_write (EV_A_ &async_pending);
3422} 3694}
3423#endif 3695#endif
3424 3696
3425/*****************************************************************************/ 3697/*****************************************************************************/
3426 3698
3466{ 3738{
3467 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3739 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3468 3740
3469 if (expect_false (!once)) 3741 if (expect_false (!once))
3470 { 3742 {
3471 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3743 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3472 return; 3744 return;
3473 } 3745 }
3474 3746
3475 once->cb = cb; 3747 once->cb = cb;
3476 once->arg = arg; 3748 once->arg = arg;
3563 if (types & EV_ASYNC) 3835 if (types & EV_ASYNC)
3564 for (i = asynccnt; i--; ) 3836 for (i = asynccnt; i--; )
3565 cb (EV_A_ EV_ASYNC, asyncs [i]); 3837 cb (EV_A_ EV_ASYNC, asyncs [i]);
3566#endif 3838#endif
3567 3839
3840#if EV_PREPARE_ENABLE
3568 if (types & EV_PREPARE) 3841 if (types & EV_PREPARE)
3569 for (i = preparecnt; i--; ) 3842 for (i = preparecnt; i--; )
3570#if EV_EMBED_ENABLE 3843# if EV_EMBED_ENABLE
3571 if (ev_cb (prepares [i]) != embed_prepare_cb) 3844 if (ev_cb (prepares [i]) != embed_prepare_cb)
3572#endif 3845# endif
3573 cb (EV_A_ EV_PREPARE, prepares [i]); 3846 cb (EV_A_ EV_PREPARE, prepares [i]);
3847#endif
3574 3848
3849#if EV_CHECK_ENABLE
3575 if (types & EV_CHECK) 3850 if (types & EV_CHECK)
3576 for (i = checkcnt; i--; ) 3851 for (i = checkcnt; i--; )
3577 cb (EV_A_ EV_CHECK, checks [i]); 3852 cb (EV_A_ EV_CHECK, checks [i]);
3853#endif
3578 3854
3855#if EV_SIGNAL_ENABLE
3579 if (types & EV_SIGNAL) 3856 if (types & EV_SIGNAL)
3580 for (i = 0; i < EV_NSIG - 1; ++i) 3857 for (i = 0; i < EV_NSIG - 1; ++i)
3581 for (wl = signals [i].head; wl; ) 3858 for (wl = signals [i].head; wl; )
3582 { 3859 {
3583 wn = wl->next; 3860 wn = wl->next;
3584 cb (EV_A_ EV_SIGNAL, wl); 3861 cb (EV_A_ EV_SIGNAL, wl);
3585 wl = wn; 3862 wl = wn;
3586 } 3863 }
3864#endif
3587 3865
3866#if EV_CHILD_ENABLE
3588 if (types & EV_CHILD) 3867 if (types & EV_CHILD)
3589 for (i = EV_PID_HASHSIZE; i--; ) 3868 for (i = (EV_PID_HASHSIZE); i--; )
3590 for (wl = childs [i]; wl; ) 3869 for (wl = childs [i]; wl; )
3591 { 3870 {
3592 wn = wl->next; 3871 wn = wl->next;
3593 cb (EV_A_ EV_CHILD, wl); 3872 cb (EV_A_ EV_CHILD, wl);
3594 wl = wn; 3873 wl = wn;
3595 } 3874 }
3875#endif
3596/* EV_STAT 0x00001000 /* stat data changed */ 3876/* EV_STAT 0x00001000 /* stat data changed */
3597/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3877/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3598} 3878}
3599#endif 3879#endif
3600 3880
3601#if EV_MULTIPLICITY 3881#if EV_MULTIPLICITY
3602 #include "ev_wrap.h" 3882 #include "ev_wrap.h"
3603#endif 3883#endif
3604 3884
3605#ifdef __cplusplus 3885EV_CPP(})
3606}
3607#endif
3608 3886

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