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Comparing libev/ev.c (file contents):
Revision 1.240 by root, Thu May 8 21:21:41 2008 UTC vs.
Revision 1.359 by root, Sun Oct 24 17:58:41 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 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
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# 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
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
130# endif 148# endif
131 149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
157# endif
158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
158#else 189#else
190# include <io.h>
159# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 192# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
163# endif 195# endif
196# undef EV_AVOID_STDIO
164#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
165 206
166/* 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 */
167 208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
236
237#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else
241# define EV_USE_CLOCK_SYSCALL 0
242# endif
243#endif
244
168#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else
169# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
250# endif
170#endif 251#endif
171 252
172#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 255#endif
175 256
176#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
258# if _POSIX_C_SOURCE >= 199309L
259# define EV_USE_NANOSLEEP EV_FEATURE_OS
260# else
177# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
262# endif
178#endif 263#endif
179 264
180#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 267#endif
183 268
184#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
185# ifdef _WIN32 270# ifdef _WIN32
186# define EV_USE_POLL 0 271# define EV_USE_POLL 0
187# else 272# else
188# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 274# endif
190#endif 275#endif
191 276
192#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 280# else
196# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
197# endif 282# endif
198#endif 283#endif
199 284
… …
205# define EV_USE_PORT 0 290# define EV_USE_PORT 0
206#endif 291#endif
207 292
208#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 296# else
212# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
213# endif 298# endif
214#endif 299#endif
215 300
216#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 303#endif
223 304
224#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 307#endif
231 308
232#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 312# else
236# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
237# endif 314# endif
238#endif 315#endif
239 316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
322# endif
323#endif
324
325#if 0 /* debugging */
326# define EV_VERIFY 3
327# define EV_USE_4HEAP 1
328# define EV_HEAP_CACHE_AT 1
329#endif
330
331#ifndef EV_VERIFY
332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
333#endif
334
335#ifndef EV_USE_4HEAP
336# define EV_USE_4HEAP EV_FEATURE_DATA
337#endif
338
339#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
355#endif
356
240/* 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 */
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
241 364
242#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
245#endif 368#endif
… …
259# include <sys/select.h> 382# include <sys/select.h>
260# endif 383# endif
261#endif 384#endif
262 385
263#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/statfs.h>
264# include <sys/inotify.h> 388# include <sys/inotify.h>
389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
390# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0
393# endif
265#endif 394#endif
266 395
267#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 397# include <winsock.h>
269#endif 398#endif
270 399
271#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h> 402# include <stdint.h>
274# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
275extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
276# endif 405# endif
277int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
278# ifdef __cplusplus 407# ifdef O_CLOEXEC
279} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
280# endif 412# endif
413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
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
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430
431struct signalfd_siginfo
432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
281#endif 436#endif
282 437
283/**/ 438/**/
439
440#if EV_VERIFY >= 3
441# define EV_FREQUENT_CHECK ev_verify (EV_A)
442#else
443# define EV_FREQUENT_CHECK do { } while (0)
444#endif
284 445
285/* 446/*
286 * This is used to avoid floating point rounding problems. 447 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics 448 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding 449 * to ensure progress, time-wise, even when rounding
… …
292 */ 453 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294 455
295#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) */
296#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) */
297/*#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)
298 461
299#if __GNUC__ >= 4 462#if __GNUC__ >= 4
300# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
301# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
302#else 465#else
… …
309 472
310#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
311#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
312#define inline_size static inline 475#define inline_size static inline
313 476
314#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
315# define inline_speed static noinline 480# define inline_speed static noinline
481#endif
482
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484
485#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0)
316#else 487#else
317# define inline_speed static inline
318#endif
319
320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
322 490
323#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
325 493
326typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
328typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
329 497
330#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
332 500
501#if EV_USE_REALTIME
502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
503/* giving it a reasonably high chance of working on typical architectures */
504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
505#endif
506
333#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
334/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335/* giving it a reasonably high chance of working on typical architetcures */
336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
509#endif
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)
337#endif 519#endif
338 520
339#ifdef _WIN32 521#ifdef _WIN32
340# include "ev_win32.c" 522# include "ev_win32.c"
341#endif 523#endif
342 524
343/*****************************************************************************/ 525/*****************************************************************************/
344 526
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
576
345static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
346 578
347void 579void
348ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
349{ 581{
350 syserr_cb = cb; 582 syserr_cb = cb;
351} 583}
352 584
353static void noinline 585static void noinline
354syserr (const char *msg) 586ev_syserr (const char *msg)
355{ 587{
356 if (!msg) 588 if (!msg)
357 msg = "(libev) system error"; 589 msg = "(libev) system error";
358 590
359 if (syserr_cb) 591 if (syserr_cb)
360 syserr_cb (msg); 592 syserr_cb (msg);
361 else 593 else
362 { 594 {
595#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg);
599 ev_printerr (": ");
600 ev_printerr (err);
601 ev_printerr ("\n");
602#else
363 perror (msg); 603 perror (msg);
604#endif
364 abort (); 605 abort ();
365 } 606 }
366} 607}
367 608
368static void * 609static void *
369ev_realloc_emul (void *ptr, long size) 610ev_realloc_emul (void *ptr, long size)
370{ 611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
371 /* some systems, notably openbsd and darwin, fail to properly 615 /* some systems, notably openbsd and darwin, fail to properly
372 * implement realloc (x, 0) (as required by both ansi c-98 and 616 * implement realloc (x, 0) (as required by both ansi c-89 and
373 * the single unix specification, so work around them here. 617 * the single unix specification, so work around them here.
374 */ 618 */
375 619
376 if (size) 620 if (size)
377 return realloc (ptr, size); 621 return realloc (ptr, size);
378 622
379 free (ptr); 623 free (ptr);
380 return 0; 624 return 0;
625#endif
381} 626}
382 627
383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
384 629
385void 630void
… …
393{ 638{
394 ptr = alloc (ptr, size); 639 ptr = alloc (ptr, size);
395 640
396 if (!ptr && size) 641 if (!ptr && size)
397 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
399 abort (); 648 abort ();
400 } 649 }
401 650
402 return ptr; 651 return ptr;
403} 652}
… …
405#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
406#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
407 656
408/*****************************************************************************/ 657/*****************************************************************************/
409 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
410typedef struct 663typedef struct
411{ 664{
412 WL head; 665 WL head;
413 unsigned char events; 666 unsigned char events; /* the events watched for */
667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
415#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
416 SOCKET handle; 674 SOCKET handle;
417#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
418} ANFD; 679} ANFD;
419 680
681/* stores the pending event set for a given watcher */
420typedef struct 682typedef struct
421{ 683{
422 W w; 684 W w;
423 int events; 685 int events; /* the pending event set for the given watcher */
424} ANPENDING; 686} ANPENDING;
425 687
426#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
689/* hash table entry per inotify-id */
427typedef struct 690typedef struct
428{ 691{
429 WL head; 692 WL head;
430} ANFS; 693} ANFS;
694#endif
695
696/* Heap Entry */
697#if EV_HEAP_CACHE_AT
698 /* a heap element */
699 typedef struct {
700 ev_tstamp at;
701 WT w;
702 } ANHE;
703
704 #define ANHE_w(he) (he).w /* access watcher, read-write */
705 #define ANHE_at(he) (he).at /* access cached at, read-only */
706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
707#else
708 /* a heap element */
709 typedef WT ANHE;
710
711 #define ANHE_w(he) (he)
712 #define ANHE_at(he) (he)->at
713 #define ANHE_at_cache(he)
431#endif 714#endif
432 715
433#if EV_MULTIPLICITY 716#if EV_MULTIPLICITY
434 717
435 struct ev_loop 718 struct ev_loop
… …
454 737
455 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
456 739
457#endif 740#endif
458 741
742#if EV_FEATURE_API
743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
745# define EV_INVOKE_PENDING invoke_cb (EV_A)
746#else
747# define EV_RELEASE_CB (void)0
748# define EV_ACQUIRE_CB (void)0
749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
750#endif
751
752#define EVBREAK_RECURSE 0x80
753
459/*****************************************************************************/ 754/*****************************************************************************/
460 755
756#ifndef EV_HAVE_EV_TIME
461ev_tstamp 757ev_tstamp
462ev_time (void) 758ev_time (void)
463{ 759{
464#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
465 struct timespec ts; 763 struct timespec ts;
466 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
467 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
468#else 766 }
767#endif
768
469 struct timeval tv; 769 struct timeval tv;
470 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
471 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
472#endif
473} 772}
773#endif
474 774
475ev_tstamp inline_size 775inline_size ev_tstamp
476get_clock (void) 776get_clock (void)
477{ 777{
478#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
479 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
480 { 780 {
… …
501 if (delay > 0.) 801 if (delay > 0.)
502 { 802 {
503#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
504 struct timespec ts; 804 struct timespec ts;
505 805
506 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
507 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
508
509 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
510#elif defined(_WIN32) 808#elif defined(_WIN32)
511 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
512#else 810#else
513 struct timeval tv; 811 struct timeval tv;
514 812
515 tv.tv_sec = (time_t)delay; 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 814 /* something not guaranteed by newer posix versions, but guaranteed */
517 815 /* by older ones */
816 EV_TV_SET (tv, delay);
518 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
519#endif 818#endif
520 } 819 }
521} 820}
522 821
523/*****************************************************************************/ 822/*****************************************************************************/
524 823
525#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526 825
527int inline_size 826/* find a suitable new size for the given array, */
827/* hopefully by rounding to a nice-to-malloc size */
828inline_size int
528array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
529{ 830{
530 int ncur = cur + 1; 831 int ncur = cur + 1;
531 832
532 do 833 do
… …
549array_realloc (int elem, void *base, int *cur, int cnt) 850array_realloc (int elem, void *base, int *cur, int cnt)
550{ 851{
551 *cur = array_nextsize (elem, *cur, cnt); 852 *cur = array_nextsize (elem, *cur, cnt);
552 return ev_realloc (base, elem * *cur); 853 return ev_realloc (base, elem * *cur);
553} 854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
554 858
555#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
556 if (expect_false ((cnt) > (cur))) \ 860 if (expect_false ((cnt) > (cur))) \
557 { \ 861 { \
558 int ocur_ = (cur); \ 862 int ocur_ = (cur); \
… …
570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571 } 875 }
572#endif 876#endif
573 877
574#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
575 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
576 880
577/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
578 888
579void noinline 889void noinline
580ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
581{ 891{
582 W w_ = (W)w; 892 W w_ = (W)w;
… …
591 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
592 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
593 } 903 }
594} 904}
595 905
596void inline_speed 906inline_speed void
907feed_reverse (EV_P_ W w)
908{
909 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
910 rfeeds [rfeedcnt++] = w;
911}
912
913inline_size void
914feed_reverse_done (EV_P_ int revents)
915{
916 do
917 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
918 while (rfeedcnt);
919}
920
921inline_speed void
597queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
598{ 923{
599 int i; 924 int i;
600 925
601 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
602 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
603} 928}
604 929
605/*****************************************************************************/ 930/*****************************************************************************/
606 931
607void inline_size 932inline_speed void
608anfds_init (ANFD *base, int count)
609{
610 while (count--)
611 {
612 base->head = 0;
613 base->events = EV_NONE;
614 base->reify = 0;
615
616 ++base;
617 }
618}
619
620void inline_speed
621fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
622{ 934{
623 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
624 ev_io *w; 936 ev_io *w;
625 937
626 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
630 if (ev) 942 if (ev)
631 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
632 } 944 }
633} 945}
634 946
947/* do not submit kernel events for fds that have reify set */
948/* because that means they changed while we were polling for new events */
949inline_speed void
950fd_event (EV_P_ int fd, int revents)
951{
952 ANFD *anfd = anfds + fd;
953
954 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents);
956}
957
635void 958void
636ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
637{ 960{
638 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
639 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
640} 963}
641 964
642void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
643fd_reify (EV_P) 968fd_reify (EV_P)
644{ 969{
645 int i; 970 int i;
646 971
647 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
648 { 973 {
649 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
650 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
651 ev_io *w; 976 ev_io *w;
652 977
653 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
654 980
655 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
656 events |= (unsigned char)w->events;
657 982
658#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
659 if (events) 984 if (o_reify & EV__IOFDSET)
660 { 985 {
661 unsigned long argp; 986 unsigned long arg;
662 #ifdef EV_FD_TO_WIN32_HANDLE
663 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664 #else
665 anfd->handle = _get_osfhandle (fd);
666 #endif
667 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
668 } 990 }
669#endif 991#endif
670 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
671 { 994 {
672 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify;
674
675 anfd->reify = 0;
676 anfd->events = events; 995 anfd->events = 0;
677 996
678 if (o_events != events || o_reify & EV_IOFDSET) 997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
679 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
680 }
681 } 1006 }
682 1007
683 fdchangecnt = 0; 1008 fdchangecnt = 0;
684} 1009}
685 1010
686void inline_size 1011/* something about the given fd changed */
1012inline_size void
687fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
688{ 1014{
689 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
690 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
691 1017
… …
695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
697 } 1023 }
698} 1024}
699 1025
700void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
701fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
702{ 1029{
703 ev_io *w; 1030 ev_io *w;
704 1031
705 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
707 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
708 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
709 } 1036 }
710} 1037}
711 1038
712int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
713fd_valid (int fd) 1041fd_valid (int fd)
714{ 1042{
715#ifdef _WIN32 1043#ifdef _WIN32
716 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
717#else 1045#else
718 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
719#endif 1047#endif
720} 1048}
721 1049
… …
725{ 1053{
726 int fd; 1054 int fd;
727 1055
728 for (fd = 0; fd < anfdmax; ++fd) 1056 for (fd = 0; fd < anfdmax; ++fd)
729 if (anfds [fd].events) 1057 if (anfds [fd].events)
730 if (!fd_valid (fd) == -1 && errno == EBADF) 1058 if (!fd_valid (fd) && errno == EBADF)
731 fd_kill (EV_A_ fd); 1059 fd_kill (EV_A_ fd);
732} 1060}
733 1061
734/* called on ENOMEM in select/poll to kill some fds and retry */ 1062/* called on ENOMEM in select/poll to kill some fds and retry */
735static void noinline 1063static void noinline
… …
739 1067
740 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
741 if (anfds [fd].events) 1069 if (anfds [fd].events)
742 { 1070 {
743 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
744 return; 1072 break;
745 } 1073 }
746} 1074}
747 1075
748/* usually called after fork if backend needs to re-arm all fds from scratch */ 1076/* usually called after fork if backend needs to re-arm all fds from scratch */
749static void noinline 1077static void noinline
… …
753 1081
754 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
755 if (anfds [fd].events) 1083 if (anfds [fd].events)
756 { 1084 {
757 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
1086 anfds [fd].emask = 0;
758 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
759 } 1088 }
760} 1089}
761 1090
1091/* used to prepare libev internal fd's */
1092/* this is not fork-safe */
1093inline_speed void
1094fd_intern (int fd)
1095{
1096#ifdef _WIN32
1097 unsigned long arg = 1;
1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1099#else
1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
1101 fcntl (fd, F_SETFL, O_NONBLOCK);
1102#endif
1103}
1104
762/*****************************************************************************/ 1105/*****************************************************************************/
1106
1107/*
1108 * the heap functions want a real array index. array index 0 is guaranteed to not
1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1110 * the branching factor of the d-tree.
1111 */
763 1112
764/* 1113/*
765 * at the moment we allow libev the luxury of two heaps, 1114 * at the moment we allow libev the luxury of two heaps,
766 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap 1115 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767 * which is more cache-efficient. 1116 * which is more cache-efficient.
768 * the difference is about 5% with 50000+ watchers. 1117 * the difference is about 5% with 50000+ watchers.
769 */ 1118 */
770#define USE_4HEAP !EV_MINIMAL
771#if USE_4HEAP 1119#if EV_USE_4HEAP
772 1120
773#define DHEAP 4 1121#define DHEAP 4
774#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1124#define UPHEAP_DONE(p,k) ((p) == (k))
775 1125
776/* towards the root */ 1126/* away from the root */
777void inline_speed 1127inline_speed void
778upheap (WT *heap, int k) 1128downheap (ANHE *heap, int N, int k)
779{ 1129{
780 WT w = heap [k]; 1130 ANHE he = heap [k];
781 ev_tstamp w_at = w->at; 1131 ANHE *E = heap + N + HEAP0;
782 1132
783 for (;;) 1133 for (;;)
784 { 1134 {
785 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
786
787 if (p == k || heap [p]->at <= w_at)
788 break;
789
790 heap [k] = heap [p];
791 ev_active (heap [k]) = k;
792 k = p;
793 }
794
795 heap [k] = w;
796 ev_active (heap [k]) = k;
797}
798
799/* away from the root */
800void inline_speed
801downheap (WT *heap, int N, int k)
802{
803 WT w = heap [k];
804 WT *E = heap + N + HEAP0;
805
806 for (;;)
807 {
808 ev_tstamp minat; 1135 ev_tstamp minat;
809 WT *minpos; 1136 ANHE *minpos;
810 WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1137 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
811 1138
812 // find minimum child 1139 /* find minimum child */
813 if (expect_true (pos + DHEAP - 1 < E)) 1140 if (expect_true (pos + DHEAP - 1 < E))
814 { 1141 {
815 /* fast path */ (minpos = pos + 0), (minat = (*minpos)->at); 1142 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
816 if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); 1143 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
817 if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); 1144 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
818 if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); 1145 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
819 } 1146 }
820 else if (pos < E) 1147 else if (pos < E)
821 { 1148 {
822 /* slow path */ (minpos = pos + 0), (minat = (*minpos)->at); 1149 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
823 if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); 1150 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
824 if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); 1151 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
825 if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); 1152 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
826 } 1153 }
827 else 1154 else
828 break; 1155 break;
829 1156
830 if (w->at <= minat) 1157 if (ANHE_at (he) <= minat)
831 break; 1158 break;
832 1159
833 ev_active (*minpos) = k;
834 heap [k] = *minpos; 1160 heap [k] = *minpos;
1161 ev_active (ANHE_w (*minpos)) = k;
835 1162
836 k = minpos - heap; 1163 k = minpos - heap;
837 } 1164 }
838 1165
839 heap [k] = w; 1166 heap [k] = he;
840 ev_active (heap [k]) = k; 1167 ev_active (ANHE_w (he)) = k;
841} 1168}
842 1169
843#else // 4HEAP 1170#else /* 4HEAP */
844 1171
845#define HEAP0 1 1172#define HEAP0 1
1173#define HPARENT(k) ((k) >> 1)
1174#define UPHEAP_DONE(p,k) (!(p))
846 1175
847/* towards the root */ 1176/* away from the root */
848void inline_speed 1177inline_speed void
849upheap (WT *heap, int k) 1178downheap (ANHE *heap, int N, int k)
850{ 1179{
851 WT w = heap [k]; 1180 ANHE he = heap [k];
852 1181
853 for (;;) 1182 for (;;)
854 { 1183 {
855 int p = k >> 1; 1184 int c = k << 1;
856 1185
857 /* maybe we could use a dummy element at heap [0]? */ 1186 if (c >= N + HEAP0)
858 if (!p || heap [p]->at <= w->at)
859 break; 1187 break;
860 1188
861 heap [k] = heap [p]; 1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
862 ev_active (heap [k]) = k; 1190 ? 1 : 0;
863 k = p;
864 }
865 1191
866 heap [k] = w; 1192 if (ANHE_at (he) <= ANHE_at (heap [c]))
867 ev_active (heap [k]) = k;
868}
869
870/* away from the root */
871void inline_speed
872downheap (WT *heap, int N, int k)
873{
874 WT w = heap [k];
875
876 for (;;)
877 {
878 int c = k << 1;
879
880 if (c > N)
881 break; 1193 break;
882 1194
883 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
884 ? 1 : 0;
885
886 if (w->at <= heap [c]->at)
887 break;
888
889 heap [k] = heap [c]; 1195 heap [k] = heap [c];
890 ((W)heap [k])->active = k; 1196 ev_active (ANHE_w (heap [k])) = k;
891 1197
892 k = c; 1198 k = c;
893 } 1199 }
894 1200
895 heap [k] = w; 1201 heap [k] = he;
1202 ev_active (ANHE_w (he)) = k;
1203}
1204#endif
1205
1206/* towards the root */
1207inline_speed void
1208upheap (ANHE *heap, int k)
1209{
1210 ANHE he = heap [k];
1211
1212 for (;;)
1213 {
1214 int p = HPARENT (k);
1215
1216 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1217 break;
1218
1219 heap [k] = heap [p];
896 ev_active (heap [k]) = k; 1220 ev_active (ANHE_w (heap [k])) = k;
897} 1221 k = p;
898#endif 1222 }
899 1223
900void inline_size 1224 heap [k] = he;
1225 ev_active (ANHE_w (he)) = k;
1226}
1227
1228/* move an element suitably so it is in a correct place */
1229inline_size void
901adjustheap (WT *heap, int N, int k) 1230adjustheap (ANHE *heap, int N, int k)
902{ 1231{
1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
903 upheap (heap, k); 1233 upheap (heap, k);
1234 else
904 downheap (heap, N, k); 1235 downheap (heap, N, k);
1236}
1237
1238/* rebuild the heap: this function is used only once and executed rarely */
1239inline_size void
1240reheap (ANHE *heap, int N)
1241{
1242 int i;
1243
1244 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1245 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1246 for (i = 0; i < N; ++i)
1247 upheap (heap, i + HEAP0);
905} 1248}
906 1249
907/*****************************************************************************/ 1250/*****************************************************************************/
908 1251
1252/* associate signal watchers to a signal signal */
909typedef struct 1253typedef struct
910{ 1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
911 WL head; 1259 WL head;
912 EV_ATOMIC_T gotsig;
913} ANSIG; 1260} ANSIG;
914 1261
915static ANSIG *signals; 1262static ANSIG signals [EV_NSIG - 1];
916static int signalmax;
917
918static EV_ATOMIC_T gotsig;
919
920void inline_size
921signals_init (ANSIG *base, int count)
922{
923 while (count--)
924 {
925 base->head = 0;
926 base->gotsig = 0;
927
928 ++base;
929 }
930}
931 1263
932/*****************************************************************************/ 1264/*****************************************************************************/
933 1265
934void inline_speed 1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
935fd_intern (int fd)
936{
937#ifdef _WIN32
938 int arg = 1;
939 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
940#else
941 fcntl (fd, F_SETFD, FD_CLOEXEC);
942 fcntl (fd, F_SETFL, O_NONBLOCK);
943#endif
944}
945 1267
946static void noinline 1268static void noinline
947evpipe_init (EV_P) 1269evpipe_init (EV_P)
948{ 1270{
949 if (!ev_is_active (&pipeev)) 1271 if (!ev_is_active (&pipe_w))
950 { 1272 {
951#if EV_USE_EVENTFD 1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
952 if ((evfd = eventfd (0, 0)) >= 0) 1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
953 { 1279 {
954 evpipe [0] = -1; 1280 evpipe [0] = -1;
955 fd_intern (evfd); 1281 fd_intern (evfd); /* doing it twice doesn't hurt */
956 ev_io_set (&pipeev, evfd, EV_READ); 1282 ev_io_set (&pipe_w, evfd, EV_READ);
957 } 1283 }
958 else 1284 else
959#endif 1285# endif
960 { 1286 {
961 while (pipe (evpipe)) 1287 while (pipe (evpipe))
962 syserr ("(libev) error creating signal/async pipe"); 1288 ev_syserr ("(libev) error creating signal/async pipe");
963 1289
964 fd_intern (evpipe [0]); 1290 fd_intern (evpipe [0]);
965 fd_intern (evpipe [1]); 1291 fd_intern (evpipe [1]);
966 ev_io_set (&pipeev, evpipe [0], EV_READ); 1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
967 } 1293 }
968 1294
969 ev_io_start (EV_A_ &pipeev); 1295 ev_io_start (EV_A_ &pipe_w);
970 ev_unref (EV_A); /* watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
971 } 1297 }
972} 1298}
973 1299
974void inline_size 1300inline_size void
975evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
976{ 1302{
977 if (!*flag) 1303 if (!*flag)
978 { 1304 {
979 int old_errno = errno; /* save errno because write might clobber it */ 1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
980 1307
981 *flag = 1; 1308 *flag = 1;
982 1309
983#if EV_USE_EVENTFD 1310#if EV_USE_EVENTFD
984 if (evfd >= 0) 1311 if (evfd >= 0)
… …
986 uint64_t counter = 1; 1313 uint64_t counter = 1;
987 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
988 } 1315 }
989 else 1316 else
990#endif 1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
991 write (evpipe [1], &old_errno, 1); 1323 write (evpipe [1], &dummy, 1);
992 1324
993 errno = old_errno; 1325 errno = old_errno;
994 } 1326 }
995} 1327}
996 1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
997static void 1331static void
998pipecb (EV_P_ ev_io *iow, int revents) 1332pipecb (EV_P_ ev_io *iow, int revents)
999{ 1333{
1334 int i;
1335
1000#if EV_USE_EVENTFD 1336#if EV_USE_EVENTFD
1001 if (evfd >= 0) 1337 if (evfd >= 0)
1002 { 1338 {
1003 uint64_t counter; 1339 uint64_t counter;
1004 read (evfd, &counter, sizeof (uint64_t)); 1340 read (evfd, &counter, sizeof (uint64_t));
1005 } 1341 }
1006 else 1342 else
1007#endif 1343#endif
1008 { 1344 {
1009 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1010 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
1011 } 1348 }
1012 1349
1013 if (gotsig && ev_is_default_loop (EV_A)) 1350 if (sig_pending)
1014 { 1351 {
1015 int signum; 1352 sig_pending = 0;
1016 gotsig = 0;
1017 1353
1018 for (signum = signalmax; signum--; ) 1354 for (i = EV_NSIG - 1; i--; )
1019 if (signals [signum].gotsig) 1355 if (expect_false (signals [i].pending))
1020 ev_feed_signal_event (EV_A_ signum + 1); 1356 ev_feed_signal_event (EV_A_ i + 1);
1021 } 1357 }
1022 1358
1023#if EV_ASYNC_ENABLE 1359#if EV_ASYNC_ENABLE
1024 if (gotasync) 1360 if (async_pending)
1025 { 1361 {
1026 int i; 1362 async_pending = 0;
1027 gotasync = 0;
1028 1363
1029 for (i = asynccnt; i--; ) 1364 for (i = asynccnt; i--; )
1030 if (asyncs [i]->sent) 1365 if (asyncs [i]->sent)
1031 { 1366 {
1032 asyncs [i]->sent = 0; 1367 asyncs [i]->sent = 0;
… …
1040 1375
1041static void 1376static void
1042ev_sighandler (int signum) 1377ev_sighandler (int signum)
1043{ 1378{
1044#if EV_MULTIPLICITY 1379#if EV_MULTIPLICITY
1045 struct ev_loop *loop = &default_loop_struct; 1380 EV_P = signals [signum - 1].loop;
1046#endif 1381#endif
1047 1382
1048#if _WIN32 1383#ifdef _WIN32
1049 signal (signum, ev_sighandler); 1384 signal (signum, ev_sighandler);
1050#endif 1385#endif
1051 1386
1052 signals [signum - 1].gotsig = 1; 1387 signals [signum - 1].pending = 1;
1053 evpipe_write (EV_A_ &gotsig); 1388 evpipe_write (EV_A_ &sig_pending);
1054} 1389}
1055 1390
1056void noinline 1391void noinline
1057ev_feed_signal_event (EV_P_ int signum) 1392ev_feed_signal_event (EV_P_ int signum)
1058{ 1393{
1059 WL w; 1394 WL w;
1060 1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1061#if EV_MULTIPLICITY 1401#if EV_MULTIPLICITY
1062 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1402 /* it is permissible to try to feed a signal to the wrong loop */
1063#endif 1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1064 1404
1065 --signum; 1405 if (expect_false (signals [signum].loop != EV_A))
1066
1067 if (signum < 0 || signum >= signalmax)
1068 return; 1406 return;
1407#endif
1069 1408
1070 signals [signum].gotsig = 0; 1409 signals [signum].pending = 0;
1071 1410
1072 for (w = signals [signum].head; w; w = w->next) 1411 for (w = signals [signum].head; w; w = w->next)
1073 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1074} 1413}
1075 1414
1415#if EV_USE_SIGNALFD
1416static void
1417sigfdcb (EV_P_ ev_io *iow, int revents)
1418{
1419 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1420
1421 for (;;)
1422 {
1423 ssize_t res = read (sigfd, si, sizeof (si));
1424
1425 /* not ISO-C, as res might be -1, but works with SuS */
1426 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1427 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1428
1429 if (res < (ssize_t)sizeof (si))
1430 break;
1431 }
1432}
1433#endif
1434
1435#endif
1436
1076/*****************************************************************************/ 1437/*****************************************************************************/
1077 1438
1439#if EV_CHILD_ENABLE
1078static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
1079
1080#ifndef _WIN32
1081 1441
1082static ev_signal childev; 1442static ev_signal childev;
1083 1443
1084#ifndef WIFCONTINUED 1444#ifndef WIFCONTINUED
1085# define WIFCONTINUED(status) 0 1445# define WIFCONTINUED(status) 0
1086#endif 1446#endif
1087 1447
1088void inline_speed 1448/* handle a single child status event */
1449inline_speed void
1089child_reap (EV_P_ int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
1090{ 1451{
1091 ev_child *w; 1452 ev_child *w;
1092 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1093 1454
1094 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1455 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1095 { 1456 {
1096 if ((w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1097 && (!traced || (w->flags & 1))) 1458 && (!traced || (w->flags & 1)))
1098 { 1459 {
1099 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1460 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1106 1467
1107#ifndef WCONTINUED 1468#ifndef WCONTINUED
1108# define WCONTINUED 0 1469# define WCONTINUED 0
1109#endif 1470#endif
1110 1471
1472/* called on sigchld etc., calls waitpid */
1111static void 1473static void
1112childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
1113{ 1475{
1114 int pid, status; 1476 int pid, status;
1115 1477
… …
1123 /* make sure we are called again until all children have been reaped */ 1485 /* make sure we are called again until all children have been reaped */
1124 /* we need to do it this way so that the callback gets called before we continue */ 1486 /* we need to do it this way so that the callback gets called before we continue */
1125 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1126 1488
1127 child_reap (EV_A_ pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1128 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
1129 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1491 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1130} 1492}
1131 1493
1132#endif 1494#endif
1133 1495
1134/*****************************************************************************/ 1496/*****************************************************************************/
1135 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1136#if EV_USE_PORT 1501#if EV_USE_PORT
1137# include "ev_port.c" 1502# include "ev_port.c"
1138#endif 1503#endif
1139#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1140# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
1196 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
1197 /* it usually doesn't work correctly on anything but sockets and pipes */ 1562 /* it usually doesn't work correctly on anything but sockets and pipes */
1198 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
1199#endif 1564#endif
1200#ifdef __APPLE__ 1565#ifdef __APPLE__
1201 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
1202 flags &= ~EVBACKEND_POLL; 1567 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1568 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1569#endif
1570#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1203#endif 1572#endif
1204 1573
1205 return flags; 1574 return flags;
1206} 1575}
1207 1576
… …
1209ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1210{ 1579{
1211 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1212 1581
1213 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1214 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1215 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1216 1585
1217 return flags; 1586 return flags;
1218} 1587}
1219 1588
1220unsigned int 1589unsigned int
1221ev_backend (EV_P) 1590ev_backend (EV_P)
1222{ 1591{
1223 return backend; 1592 return backend;
1224} 1593}
1225 1594
1595#if EV_FEATURE_API
1226unsigned int 1596unsigned int
1227ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1228{ 1598{
1229 return loop_count; 1599 return loop_count;
1600}
1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1230} 1606}
1231 1607
1232void 1608void
1233ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1234{ 1610{
… …
1239ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1240{ 1616{
1241 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1242} 1618}
1243 1619
1620void
1621ev_set_userdata (EV_P_ void *data)
1622{
1623 userdata = data;
1624}
1625
1626void *
1627ev_userdata (EV_P)
1628{
1629 return userdata;
1630}
1631
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1633{
1634 invoke_cb = invoke_pending_cb;
1635}
1636
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1638{
1639 release_cb = release;
1640 acquire_cb = acquire;
1641}
1642#endif
1643
1644/* initialise a loop structure, must be zero-initialised */
1244static void noinline 1645static void noinline
1245loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1246{ 1647{
1247 if (!backend) 1648 if (!backend)
1248 { 1649 {
1650#if EV_USE_REALTIME
1651 if (!have_realtime)
1652 {
1653 struct timespec ts;
1654
1655 if (!clock_gettime (CLOCK_REALTIME, &ts))
1656 have_realtime = 1;
1657 }
1658#endif
1659
1249#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1250 { 1662 {
1251 struct timespec ts; 1663 struct timespec ts;
1664
1252 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1253 have_monotonic = 1; 1666 have_monotonic = 1;
1254 } 1667 }
1255#endif 1668#endif
1669
1670 /* pid check not overridable via env */
1671#ifndef _WIN32
1672 if (flags & EVFLAG_FORKCHECK)
1673 curpid = getpid ();
1674#endif
1675
1676 if (!(flags & EVFLAG_NOENV)
1677 && !enable_secure ()
1678 && getenv ("LIBEV_FLAGS"))
1679 flags = atoi (getenv ("LIBEV_FLAGS"));
1256 1680
1257 ev_rt_now = ev_time (); 1681 ev_rt_now = ev_time ();
1258 mn_now = get_clock (); 1682 mn_now = get_clock ();
1259 now_floor = mn_now; 1683 now_floor = mn_now;
1260 rtmn_diff = ev_rt_now - mn_now; 1684 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending;
1687#endif
1261 1688
1262 io_blocktime = 0.; 1689 io_blocktime = 0.;
1263 timeout_blocktime = 0.; 1690 timeout_blocktime = 0.;
1264 backend = 0; 1691 backend = 0;
1265 backend_fd = -1; 1692 backend_fd = -1;
1266 gotasync = 0; 1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1267#if EV_USE_INOTIFY 1697#if EV_USE_INOTIFY
1268 fs_fd = -2; 1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1269#endif 1699#endif
1270 1700#if EV_USE_SIGNALFD
1271 /* pid check not overridable via env */ 1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1272#ifndef _WIN32
1273 if (flags & EVFLAG_FORKCHECK)
1274 curpid = getpid ();
1275#endif 1702#endif
1276
1277 if (!(flags & EVFLAG_NOENV)
1278 && !enable_secure ()
1279 && getenv ("LIBEV_FLAGS"))
1280 flags = atoi (getenv ("LIBEV_FLAGS"));
1281 1703
1282 if (!(flags & 0x0000ffffU)) 1704 if (!(flags & 0x0000ffffU))
1283 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1284 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1285#if EV_USE_PORT 1710#if EV_USE_PORT
1286 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1287#endif 1712#endif
1288#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1289 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1296#endif 1721#endif
1297#if EV_USE_SELECT 1722#if EV_USE_SELECT
1298 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1299#endif 1724#endif
1300 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1301 ev_init (&pipeev, pipecb); 1729 ev_init (&pipe_w, pipecb);
1302 ev_set_priority (&pipeev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1303 } 1732 }
1304} 1733}
1305 1734
1306static void noinline 1735/* free up a loop structure */
1736void
1307loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
1308{ 1738{
1309 int i; 1739 int i;
1310 1740
1741#if EV_CHILD_ENABLE
1742 if (ev_is_active (&childev))
1743 {
1744 ev_ref (EV_A); /* child watcher */
1745 ev_signal_stop (EV_A_ &childev);
1746 }
1747#endif
1748
1311 if (ev_is_active (&pipeev)) 1749 if (ev_is_active (&pipe_w))
1312 { 1750 {
1313 ev_ref (EV_A); /* signal watcher */ 1751 /*ev_ref (EV_A);*/
1314 ev_io_stop (EV_A_ &pipeev); 1752 /*ev_io_stop (EV_A_ &pipe_w);*/
1315 1753
1316#if EV_USE_EVENTFD 1754#if EV_USE_EVENTFD
1317 if (evfd >= 0) 1755 if (evfd >= 0)
1318 close (evfd); 1756 close (evfd);
1319#endif 1757#endif
1320 1758
1321 if (evpipe [0] >= 0) 1759 if (evpipe [0] >= 0)
1322 { 1760 {
1323 close (evpipe [0]); 1761 EV_WIN32_CLOSE_FD (evpipe [0]);
1324 close (evpipe [1]); 1762 EV_WIN32_CLOSE_FD (evpipe [1]);
1325 } 1763 }
1326 } 1764 }
1765
1766#if EV_USE_SIGNALFD
1767 if (ev_is_active (&sigfd_w))
1768 close (sigfd);
1769#endif
1327 1770
1328#if EV_USE_INOTIFY 1771#if EV_USE_INOTIFY
1329 if (fs_fd >= 0) 1772 if (fs_fd >= 0)
1330 close (fs_fd); 1773 close (fs_fd);
1331#endif 1774#endif
1332 1775
1333 if (backend_fd >= 0) 1776 if (backend_fd >= 0)
1334 close (backend_fd); 1777 close (backend_fd);
1335 1778
1779#if EV_USE_IOCP
1780 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1781#endif
1336#if EV_USE_PORT 1782#if EV_USE_PORT
1337 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1783 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1338#endif 1784#endif
1339#if EV_USE_KQUEUE 1785#if EV_USE_KQUEUE
1340 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1786 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1355#if EV_IDLE_ENABLE 1801#if EV_IDLE_ENABLE
1356 array_free (idle, [i]); 1802 array_free (idle, [i]);
1357#endif 1803#endif
1358 } 1804 }
1359 1805
1360 ev_free (anfds); anfdmax = 0; 1806 ev_free (anfds); anfds = 0; anfdmax = 0;
1361 1807
1362 /* have to use the microsoft-never-gets-it-right macro */ 1808 /* have to use the microsoft-never-gets-it-right macro */
1809 array_free (rfeed, EMPTY);
1363 array_free (fdchange, EMPTY); 1810 array_free (fdchange, EMPTY);
1364 array_free (timer, EMPTY); 1811 array_free (timer, EMPTY);
1365#if EV_PERIODIC_ENABLE 1812#if EV_PERIODIC_ENABLE
1366 array_free (periodic, EMPTY); 1813 array_free (periodic, EMPTY);
1367#endif 1814#endif
… …
1373#if EV_ASYNC_ENABLE 1820#if EV_ASYNC_ENABLE
1374 array_free (async, EMPTY); 1821 array_free (async, EMPTY);
1375#endif 1822#endif
1376 1823
1377 backend = 0; 1824 backend = 0;
1825
1826#if EV_MULTIPLICITY
1827 if (ev_is_default_loop (EV_A))
1828#endif
1829 ev_default_loop_ptr = 0;
1830#if EV_MULTIPLICITY
1831 else
1832 ev_free (EV_A);
1833#endif
1378} 1834}
1379 1835
1380#if EV_USE_INOTIFY 1836#if EV_USE_INOTIFY
1381void inline_size infy_fork (EV_P); 1837inline_size void infy_fork (EV_P);
1382#endif 1838#endif
1383 1839
1384void inline_size 1840inline_size void
1385loop_fork (EV_P) 1841loop_fork (EV_P)
1386{ 1842{
1387#if EV_USE_PORT 1843#if EV_USE_PORT
1388 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1844 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1389#endif 1845#endif
… …
1395#endif 1851#endif
1396#if EV_USE_INOTIFY 1852#if EV_USE_INOTIFY
1397 infy_fork (EV_A); 1853 infy_fork (EV_A);
1398#endif 1854#endif
1399 1855
1400 if (ev_is_active (&pipeev)) 1856 if (ev_is_active (&pipe_w))
1401 { 1857 {
1402 /* this "locks" the handlers against writing to the pipe */ 1858 /* this "locks" the handlers against writing to the pipe */
1403 /* while we modify the fd vars */ 1859 /* while we modify the fd vars */
1404 gotsig = 1; 1860 sig_pending = 1;
1405#if EV_ASYNC_ENABLE 1861#if EV_ASYNC_ENABLE
1406 gotasync = 1; 1862 async_pending = 1;
1407#endif 1863#endif
1408 1864
1409 ev_ref (EV_A); 1865 ev_ref (EV_A);
1410 ev_io_stop (EV_A_ &pipeev); 1866 ev_io_stop (EV_A_ &pipe_w);
1411 1867
1412#if EV_USE_EVENTFD 1868#if EV_USE_EVENTFD
1413 if (evfd >= 0) 1869 if (evfd >= 0)
1414 close (evfd); 1870 close (evfd);
1415#endif 1871#endif
1416 1872
1417 if (evpipe [0] >= 0) 1873 if (evpipe [0] >= 0)
1418 { 1874 {
1419 close (evpipe [0]); 1875 EV_WIN32_CLOSE_FD (evpipe [0]);
1420 close (evpipe [1]); 1876 EV_WIN32_CLOSE_FD (evpipe [1]);
1421 } 1877 }
1422 1878
1879#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1423 evpipe_init (EV_A); 1880 evpipe_init (EV_A);
1424 /* now iterate over everything, in case we missed something */ 1881 /* now iterate over everything, in case we missed something */
1425 pipecb (EV_A_ &pipeev, EV_READ); 1882 pipecb (EV_A_ &pipe_w, EV_READ);
1883#endif
1426 } 1884 }
1427 1885
1428 postfork = 0; 1886 postfork = 0;
1429} 1887}
1888
1889#if EV_MULTIPLICITY
1890
1891struct ev_loop *
1892ev_loop_new (unsigned int flags)
1893{
1894 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1895
1896 memset (EV_A, 0, sizeof (struct ev_loop));
1897 loop_init (EV_A_ flags);
1898
1899 if (ev_backend (EV_A))
1900 return EV_A;
1901
1902 ev_free (EV_A);
1903 return 0;
1904}
1905
1906#endif /* multiplicity */
1907
1908#if EV_VERIFY
1909static void noinline
1910verify_watcher (EV_P_ W w)
1911{
1912 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1913
1914 if (w->pending)
1915 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1916}
1917
1918static void noinline
1919verify_heap (EV_P_ ANHE *heap, int N)
1920{
1921 int i;
1922
1923 for (i = HEAP0; i < N + HEAP0; ++i)
1924 {
1925 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1926 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1927 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1928
1929 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1930 }
1931}
1932
1933static void noinline
1934array_verify (EV_P_ W *ws, int cnt)
1935{
1936 while (cnt--)
1937 {
1938 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1939 verify_watcher (EV_A_ ws [cnt]);
1940 }
1941}
1942#endif
1943
1944#if EV_FEATURE_API
1945void
1946ev_verify (EV_P)
1947{
1948#if EV_VERIFY
1949 int i;
1950 WL w;
1951
1952 assert (activecnt >= -1);
1953
1954 assert (fdchangemax >= fdchangecnt);
1955 for (i = 0; i < fdchangecnt; ++i)
1956 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1957
1958 assert (anfdmax >= 0);
1959 for (i = 0; i < anfdmax; ++i)
1960 for (w = anfds [i].head; w; w = w->next)
1961 {
1962 verify_watcher (EV_A_ (W)w);
1963 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1964 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1965 }
1966
1967 assert (timermax >= timercnt);
1968 verify_heap (EV_A_ timers, timercnt);
1969
1970#if EV_PERIODIC_ENABLE
1971 assert (periodicmax >= periodiccnt);
1972 verify_heap (EV_A_ periodics, periodiccnt);
1973#endif
1974
1975 for (i = NUMPRI; i--; )
1976 {
1977 assert (pendingmax [i] >= pendingcnt [i]);
1978#if EV_IDLE_ENABLE
1979 assert (idleall >= 0);
1980 assert (idlemax [i] >= idlecnt [i]);
1981 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1982#endif
1983 }
1984
1985#if EV_FORK_ENABLE
1986 assert (forkmax >= forkcnt);
1987 array_verify (EV_A_ (W *)forks, forkcnt);
1988#endif
1989
1990#if EV_ASYNC_ENABLE
1991 assert (asyncmax >= asynccnt);
1992 array_verify (EV_A_ (W *)asyncs, asynccnt);
1993#endif
1994
1995#if EV_PREPARE_ENABLE
1996 assert (preparemax >= preparecnt);
1997 array_verify (EV_A_ (W *)prepares, preparecnt);
1998#endif
1999
2000#if EV_CHECK_ENABLE
2001 assert (checkmax >= checkcnt);
2002 array_verify (EV_A_ (W *)checks, checkcnt);
2003#endif
2004
2005# if 0
2006#if EV_CHILD_ENABLE
2007 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2008 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2009#endif
2010# endif
2011#endif
2012}
2013#endif
1430 2014
1431#if EV_MULTIPLICITY 2015#if EV_MULTIPLICITY
1432struct ev_loop * 2016struct ev_loop *
1433ev_loop_new (unsigned int flags)
1434{
1435 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1436
1437 memset (loop, 0, sizeof (struct ev_loop));
1438
1439 loop_init (EV_A_ flags);
1440
1441 if (ev_backend (EV_A))
1442 return loop;
1443
1444 return 0;
1445}
1446
1447void
1448ev_loop_destroy (EV_P)
1449{
1450 loop_destroy (EV_A);
1451 ev_free (loop);
1452}
1453
1454void
1455ev_loop_fork (EV_P)
1456{
1457 postfork = 1; /* must be in line with ev_default_fork */
1458}
1459#endif
1460
1461#if EV_MULTIPLICITY
1462struct ev_loop *
1463ev_default_loop_init (unsigned int flags)
1464#else 2017#else
1465int 2018int
2019#endif
1466ev_default_loop (unsigned int flags) 2020ev_default_loop (unsigned int flags)
1467#endif
1468{ 2021{
1469 if (!ev_default_loop_ptr) 2022 if (!ev_default_loop_ptr)
1470 { 2023 {
1471#if EV_MULTIPLICITY 2024#if EV_MULTIPLICITY
1472 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2025 EV_P = ev_default_loop_ptr = &default_loop_struct;
1473#else 2026#else
1474 ev_default_loop_ptr = 1; 2027 ev_default_loop_ptr = 1;
1475#endif 2028#endif
1476 2029
1477 loop_init (EV_A_ flags); 2030 loop_init (EV_A_ flags);
1478 2031
1479 if (ev_backend (EV_A)) 2032 if (ev_backend (EV_A))
1480 { 2033 {
1481#ifndef _WIN32 2034#if EV_CHILD_ENABLE
1482 ev_signal_init (&childev, childcb, SIGCHLD); 2035 ev_signal_init (&childev, childcb, SIGCHLD);
1483 ev_set_priority (&childev, EV_MAXPRI); 2036 ev_set_priority (&childev, EV_MAXPRI);
1484 ev_signal_start (EV_A_ &childev); 2037 ev_signal_start (EV_A_ &childev);
1485 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2038 ev_unref (EV_A); /* child watcher should not keep loop alive */
1486#endif 2039#endif
… …
1491 2044
1492 return ev_default_loop_ptr; 2045 return ev_default_loop_ptr;
1493} 2046}
1494 2047
1495void 2048void
1496ev_default_destroy (void) 2049ev_loop_fork (EV_P)
1497{ 2050{
1498#if EV_MULTIPLICITY
1499 struct ev_loop *loop = ev_default_loop_ptr;
1500#endif
1501
1502#ifndef _WIN32
1503 ev_ref (EV_A); /* child watcher */
1504 ev_signal_stop (EV_A_ &childev);
1505#endif
1506
1507 loop_destroy (EV_A);
1508}
1509
1510void
1511ev_default_fork (void)
1512{
1513#if EV_MULTIPLICITY
1514 struct ev_loop *loop = ev_default_loop_ptr;
1515#endif
1516
1517 if (backend)
1518 postfork = 1; /* must be in line with ev_loop_fork */ 2051 postfork = 1; /* must be in line with ev_default_fork */
1519} 2052}
1520 2053
1521/*****************************************************************************/ 2054/*****************************************************************************/
1522 2055
1523void 2056void
1524ev_invoke (EV_P_ void *w, int revents) 2057ev_invoke (EV_P_ void *w, int revents)
1525{ 2058{
1526 EV_CB_INVOKE ((W)w, revents); 2059 EV_CB_INVOKE ((W)w, revents);
1527} 2060}
1528 2061
1529void inline_speed 2062unsigned int
1530call_pending (EV_P) 2063ev_pending_count (EV_P)
2064{
2065 int pri;
2066 unsigned int count = 0;
2067
2068 for (pri = NUMPRI; pri--; )
2069 count += pendingcnt [pri];
2070
2071 return count;
2072}
2073
2074void noinline
2075ev_invoke_pending (EV_P)
1531{ 2076{
1532 int pri; 2077 int pri;
1533 2078
1534 for (pri = NUMPRI; pri--; ) 2079 for (pri = NUMPRI; pri--; )
1535 while (pendingcnt [pri]) 2080 while (pendingcnt [pri])
1536 { 2081 {
1537 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2082 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1538 2083
1539 if (expect_true (p->w))
1540 {
1541 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2084 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2085 /* ^ this is no longer true, as pending_w could be here */
1542 2086
1543 p->w->pending = 0; 2087 p->w->pending = 0;
1544 EV_CB_INVOKE (p->w, p->events); 2088 EV_CB_INVOKE (p->w, p->events);
1545 } 2089 EV_FREQUENT_CHECK;
1546 } 2090 }
1547} 2091}
1548 2092
1549#if EV_IDLE_ENABLE 2093#if EV_IDLE_ENABLE
1550void inline_size 2094/* make idle watchers pending. this handles the "call-idle */
2095/* only when higher priorities are idle" logic */
2096inline_size void
1551idle_reify (EV_P) 2097idle_reify (EV_P)
1552{ 2098{
1553 if (expect_false (idleall)) 2099 if (expect_false (idleall))
1554 { 2100 {
1555 int pri; 2101 int pri;
… …
1567 } 2113 }
1568 } 2114 }
1569} 2115}
1570#endif 2116#endif
1571 2117
1572void inline_size 2118/* make timers pending */
2119inline_size void
1573timers_reify (EV_P) 2120timers_reify (EV_P)
1574{ 2121{
2122 EV_FREQUENT_CHECK;
2123
1575 while (timercnt && ev_at (timers [HEAP0]) <= mn_now) 2124 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1576 { 2125 {
1577 ev_timer *w = (ev_timer *)timers [HEAP0]; 2126 do
1578
1579 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1580
1581 /* first reschedule or stop timer */
1582 if (w->repeat)
1583 { 2127 {
2128 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2129
2130 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2131
2132 /* first reschedule or stop timer */
2133 if (w->repeat)
2134 {
2135 ev_at (w) += w->repeat;
2136 if (ev_at (w) < mn_now)
2137 ev_at (w) = mn_now;
2138
1584 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2139 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1585 2140
1586 ev_at (w) += w->repeat; 2141 ANHE_at_cache (timers [HEAP0]);
1587 if (ev_at (w) < mn_now)
1588 ev_at (w) = mn_now;
1589
1590 downheap (timers, timercnt, HEAP0); 2142 downheap (timers, timercnt, HEAP0);
2143 }
2144 else
2145 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2146
2147 EV_FREQUENT_CHECK;
2148 feed_reverse (EV_A_ (W)w);
1591 } 2149 }
1592 else 2150 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1593 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1594 2151
1595 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2152 feed_reverse_done (EV_A_ EV_TIMER);
1596 } 2153 }
1597} 2154}
1598 2155
1599#if EV_PERIODIC_ENABLE 2156#if EV_PERIODIC_ENABLE
1600void inline_size 2157/* make periodics pending */
2158inline_size void
1601periodics_reify (EV_P) 2159periodics_reify (EV_P)
1602{ 2160{
2161 EV_FREQUENT_CHECK;
2162
1603 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now) 2163 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1604 { 2164 {
1605 ev_periodic *w = (ev_periodic *)periodics [HEAP0]; 2165 int feed_count = 0;
1606 2166
1607 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2167 do
1608
1609 /* first reschedule or stop timer */
1610 if (w->reschedule_cb)
1611 { 2168 {
2169 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2170
2171 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2172
2173 /* first reschedule or stop timer */
2174 if (w->reschedule_cb)
2175 {
1612 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 2176 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2177
1613 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); 2178 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2179
2180 ANHE_at_cache (periodics [HEAP0]);
1614 downheap (periodics, periodiccnt, 1); 2181 downheap (periodics, periodiccnt, HEAP0);
2182 }
2183 else if (w->interval)
2184 {
2185 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2186 /* if next trigger time is not sufficiently in the future, put it there */
2187 /* this might happen because of floating point inexactness */
2188 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2189 {
2190 ev_at (w) += w->interval;
2191
2192 /* if interval is unreasonably low we might still have a time in the past */
2193 /* so correct this. this will make the periodic very inexact, but the user */
2194 /* has effectively asked to get triggered more often than possible */
2195 if (ev_at (w) < ev_rt_now)
2196 ev_at (w) = ev_rt_now;
2197 }
2198
2199 ANHE_at_cache (periodics [HEAP0]);
2200 downheap (periodics, periodiccnt, HEAP0);
2201 }
2202 else
2203 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2204
2205 EV_FREQUENT_CHECK;
2206 feed_reverse (EV_A_ (W)w);
1615 } 2207 }
1616 else if (w->interval) 2208 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1617 {
1618 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1619 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1620 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1621 downheap (periodics, periodiccnt, HEAP0);
1622 }
1623 else
1624 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1625 2209
1626 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2210 feed_reverse_done (EV_A_ EV_PERIODIC);
1627 } 2211 }
1628} 2212}
1629 2213
2214/* simply recalculate all periodics */
2215/* TODO: maybe ensure that at least one event happens when jumping forward? */
1630static void noinline 2216static void noinline
1631periodics_reschedule (EV_P) 2217periodics_reschedule (EV_P)
1632{ 2218{
1633 int i; 2219 int i;
1634 2220
1635 /* adjust periodics after time jump */ 2221 /* adjust periodics after time jump */
1636 for (i = 1; i <= periodiccnt; ++i) 2222 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1637 { 2223 {
1638 ev_periodic *w = (ev_periodic *)periodics [i]; 2224 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1639 2225
1640 if (w->reschedule_cb) 2226 if (w->reschedule_cb)
1641 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2227 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1642 else if (w->interval) 2228 else if (w->interval)
1643 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2229 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2230
2231 ANHE_at_cache (periodics [i]);
2232 }
2233
2234 reheap (periodics, periodiccnt);
2235}
2236#endif
2237
2238/* adjust all timers by a given offset */
2239static void noinline
2240timers_reschedule (EV_P_ ev_tstamp adjust)
2241{
2242 int i;
2243
2244 for (i = 0; i < timercnt; ++i)
1644 } 2245 {
1645 2246 ANHE *he = timers + i + HEAP0;
1646 /* now rebuild the heap */ 2247 ANHE_w (*he)->at += adjust;
1647 for (i = periodiccnt >> 1; --i; ) 2248 ANHE_at_cache (*he);
1648 downheap (periodics, periodiccnt, i + HEAP0); 2249 }
1649} 2250}
1650#endif
1651 2251
1652void inline_speed 2252/* fetch new monotonic and realtime times from the kernel */
2253/* also detect if there was a timejump, and act accordingly */
2254inline_speed void
1653time_update (EV_P_ ev_tstamp max_block) 2255time_update (EV_P_ ev_tstamp max_block)
1654{ 2256{
1655 int i;
1656
1657#if EV_USE_MONOTONIC 2257#if EV_USE_MONOTONIC
1658 if (expect_true (have_monotonic)) 2258 if (expect_true (have_monotonic))
1659 { 2259 {
2260 int i;
1660 ev_tstamp odiff = rtmn_diff; 2261 ev_tstamp odiff = rtmn_diff;
1661 2262
1662 mn_now = get_clock (); 2263 mn_now = get_clock ();
1663 2264
1664 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2265 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1690 ev_rt_now = ev_time (); 2291 ev_rt_now = ev_time ();
1691 mn_now = get_clock (); 2292 mn_now = get_clock ();
1692 now_floor = mn_now; 2293 now_floor = mn_now;
1693 } 2294 }
1694 2295
2296 /* no timer adjustment, as the monotonic clock doesn't jump */
2297 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1695# if EV_PERIODIC_ENABLE 2298# if EV_PERIODIC_ENABLE
1696 periodics_reschedule (EV_A); 2299 periodics_reschedule (EV_A);
1697# endif 2300# endif
1698 /* no timer adjustment, as the monotonic clock doesn't jump */
1699 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1700 } 2301 }
1701 else 2302 else
1702#endif 2303#endif
1703 { 2304 {
1704 ev_rt_now = ev_time (); 2305 ev_rt_now = ev_time ();
1705 2306
1706 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2307 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1707 { 2308 {
2309 /* adjust timers. this is easy, as the offset is the same for all of them */
2310 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1708#if EV_PERIODIC_ENABLE 2311#if EV_PERIODIC_ENABLE
1709 periodics_reschedule (EV_A); 2312 periodics_reschedule (EV_A);
1710#endif 2313#endif
1711 /* adjust timers. this is easy, as the offset is the same for all of them */
1712 for (i = 1; i <= timercnt; ++i)
1713 ev_at (timers [i]) += ev_rt_now - mn_now;
1714 } 2314 }
1715 2315
1716 mn_now = ev_rt_now; 2316 mn_now = ev_rt_now;
1717 } 2317 }
1718} 2318}
1719 2319
1720void 2320void
1721ev_ref (EV_P)
1722{
1723 ++activecnt;
1724}
1725
1726void
1727ev_unref (EV_P)
1728{
1729 --activecnt;
1730}
1731
1732static int loop_done;
1733
1734void
1735ev_loop (EV_P_ int flags) 2321ev_run (EV_P_ int flags)
1736{ 2322{
2323#if EV_FEATURE_API
2324 ++loop_depth;
2325#endif
2326
2327 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2328
1737 loop_done = EVUNLOOP_CANCEL; 2329 loop_done = EVBREAK_CANCEL;
1738 2330
1739 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2331 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1740 2332
1741 do 2333 do
1742 { 2334 {
2335#if EV_VERIFY >= 2
2336 ev_verify (EV_A);
2337#endif
2338
1743#ifndef _WIN32 2339#ifndef _WIN32
1744 if (expect_false (curpid)) /* penalise the forking check even more */ 2340 if (expect_false (curpid)) /* penalise the forking check even more */
1745 if (expect_false (getpid () != curpid)) 2341 if (expect_false (getpid () != curpid))
1746 { 2342 {
1747 curpid = getpid (); 2343 curpid = getpid ();
… …
1753 /* we might have forked, so queue fork handlers */ 2349 /* we might have forked, so queue fork handlers */
1754 if (expect_false (postfork)) 2350 if (expect_false (postfork))
1755 if (forkcnt) 2351 if (forkcnt)
1756 { 2352 {
1757 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2353 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1758 call_pending (EV_A); 2354 EV_INVOKE_PENDING;
1759 } 2355 }
1760#endif 2356#endif
1761 2357
2358#if EV_PREPARE_ENABLE
1762 /* queue prepare watchers (and execute them) */ 2359 /* queue prepare watchers (and execute them) */
1763 if (expect_false (preparecnt)) 2360 if (expect_false (preparecnt))
1764 { 2361 {
1765 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2362 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1766 call_pending (EV_A); 2363 EV_INVOKE_PENDING;
1767 } 2364 }
2365#endif
1768 2366
1769 if (expect_false (!activecnt)) 2367 if (expect_false (loop_done))
1770 break; 2368 break;
1771 2369
1772 /* we might have forked, so reify kernel state if necessary */ 2370 /* we might have forked, so reify kernel state if necessary */
1773 if (expect_false (postfork)) 2371 if (expect_false (postfork))
1774 loop_fork (EV_A); 2372 loop_fork (EV_A);
… …
1779 /* calculate blocking time */ 2377 /* calculate blocking time */
1780 { 2378 {
1781 ev_tstamp waittime = 0.; 2379 ev_tstamp waittime = 0.;
1782 ev_tstamp sleeptime = 0.; 2380 ev_tstamp sleeptime = 0.;
1783 2381
2382 /* remember old timestamp for io_blocktime calculation */
2383 ev_tstamp prev_mn_now = mn_now;
2384
2385 /* update time to cancel out callback processing overhead */
2386 time_update (EV_A_ 1e100);
2387
1784 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2388 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1785 { 2389 {
1786 /* update time to cancel out callback processing overhead */
1787 time_update (EV_A_ 1e100);
1788
1789 waittime = MAX_BLOCKTIME; 2390 waittime = MAX_BLOCKTIME;
1790 2391
1791 if (timercnt) 2392 if (timercnt)
1792 { 2393 {
1793 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge; 2394 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1794 if (waittime > to) waittime = to; 2395 if (waittime > to) waittime = to;
1795 } 2396 }
1796 2397
1797#if EV_PERIODIC_ENABLE 2398#if EV_PERIODIC_ENABLE
1798 if (periodiccnt) 2399 if (periodiccnt)
1799 { 2400 {
1800 ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2401 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1801 if (waittime > to) waittime = to; 2402 if (waittime > to) waittime = to;
1802 } 2403 }
1803#endif 2404#endif
1804 2405
2406 /* don't let timeouts decrease the waittime below timeout_blocktime */
1805 if (expect_false (waittime < timeout_blocktime)) 2407 if (expect_false (waittime < timeout_blocktime))
1806 waittime = timeout_blocktime; 2408 waittime = timeout_blocktime;
1807 2409
1808 sleeptime = waittime - backend_fudge; 2410 /* extra check because io_blocktime is commonly 0 */
1809
1810 if (expect_true (sleeptime > io_blocktime)) 2411 if (expect_false (io_blocktime))
1811 sleeptime = io_blocktime;
1812
1813 if (sleeptime)
1814 { 2412 {
2413 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2414
2415 if (sleeptime > waittime - backend_fudge)
2416 sleeptime = waittime - backend_fudge;
2417
2418 if (expect_true (sleeptime > 0.))
2419 {
1815 ev_sleep (sleeptime); 2420 ev_sleep (sleeptime);
1816 waittime -= sleeptime; 2421 waittime -= sleeptime;
2422 }
1817 } 2423 }
1818 } 2424 }
1819 2425
2426#if EV_FEATURE_API
1820 ++loop_count; 2427 ++loop_count;
2428#endif
2429 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1821 backend_poll (EV_A_ waittime); 2430 backend_poll (EV_A_ waittime);
2431 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1822 2432
1823 /* update ev_rt_now, do magic */ 2433 /* update ev_rt_now, do magic */
1824 time_update (EV_A_ waittime + sleeptime); 2434 time_update (EV_A_ waittime + sleeptime);
1825 } 2435 }
1826 2436
… …
1833#if EV_IDLE_ENABLE 2443#if EV_IDLE_ENABLE
1834 /* queue idle watchers unless other events are pending */ 2444 /* queue idle watchers unless other events are pending */
1835 idle_reify (EV_A); 2445 idle_reify (EV_A);
1836#endif 2446#endif
1837 2447
2448#if EV_CHECK_ENABLE
1838 /* queue check watchers, to be executed first */ 2449 /* queue check watchers, to be executed first */
1839 if (expect_false (checkcnt)) 2450 if (expect_false (checkcnt))
1840 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2451 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2452#endif
1841 2453
1842 call_pending (EV_A); 2454 EV_INVOKE_PENDING;
1843 } 2455 }
1844 while (expect_true ( 2456 while (expect_true (
1845 activecnt 2457 activecnt
1846 && !loop_done 2458 && !loop_done
1847 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2459 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1848 )); 2460 ));
1849 2461
1850 if (loop_done == EVUNLOOP_ONE) 2462 if (loop_done == EVBREAK_ONE)
1851 loop_done = EVUNLOOP_CANCEL; 2463 loop_done = EVBREAK_CANCEL;
2464
2465#if EV_FEATURE_API
2466 --loop_depth;
2467#endif
1852} 2468}
1853 2469
1854void 2470void
1855ev_unloop (EV_P_ int how) 2471ev_break (EV_P_ int how)
1856{ 2472{
1857 loop_done = how; 2473 loop_done = how;
1858} 2474}
1859 2475
2476void
2477ev_ref (EV_P)
2478{
2479 ++activecnt;
2480}
2481
2482void
2483ev_unref (EV_P)
2484{
2485 --activecnt;
2486}
2487
2488void
2489ev_now_update (EV_P)
2490{
2491 time_update (EV_A_ 1e100);
2492}
2493
2494void
2495ev_suspend (EV_P)
2496{
2497 ev_now_update (EV_A);
2498}
2499
2500void
2501ev_resume (EV_P)
2502{
2503 ev_tstamp mn_prev = mn_now;
2504
2505 ev_now_update (EV_A);
2506 timers_reschedule (EV_A_ mn_now - mn_prev);
2507#if EV_PERIODIC_ENABLE
2508 /* TODO: really do this? */
2509 periodics_reschedule (EV_A);
2510#endif
2511}
2512
1860/*****************************************************************************/ 2513/*****************************************************************************/
2514/* singly-linked list management, used when the expected list length is short */
1861 2515
1862void inline_size 2516inline_size void
1863wlist_add (WL *head, WL elem) 2517wlist_add (WL *head, WL elem)
1864{ 2518{
1865 elem->next = *head; 2519 elem->next = *head;
1866 *head = elem; 2520 *head = elem;
1867} 2521}
1868 2522
1869void inline_size 2523inline_size void
1870wlist_del (WL *head, WL elem) 2524wlist_del (WL *head, WL elem)
1871{ 2525{
1872 while (*head) 2526 while (*head)
1873 { 2527 {
1874 if (*head == elem) 2528 if (expect_true (*head == elem))
1875 { 2529 {
1876 *head = elem->next; 2530 *head = elem->next;
1877 return; 2531 break;
1878 } 2532 }
1879 2533
1880 head = &(*head)->next; 2534 head = &(*head)->next;
1881 } 2535 }
1882} 2536}
1883 2537
1884void inline_speed 2538/* internal, faster, version of ev_clear_pending */
2539inline_speed void
1885clear_pending (EV_P_ W w) 2540clear_pending (EV_P_ W w)
1886{ 2541{
1887 if (w->pending) 2542 if (w->pending)
1888 { 2543 {
1889 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2544 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1890 w->pending = 0; 2545 w->pending = 0;
1891 } 2546 }
1892} 2547}
1893 2548
1894int 2549int
… …
1898 int pending = w_->pending; 2553 int pending = w_->pending;
1899 2554
1900 if (expect_true (pending)) 2555 if (expect_true (pending))
1901 { 2556 {
1902 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2557 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2558 p->w = (W)&pending_w;
1903 w_->pending = 0; 2559 w_->pending = 0;
1904 p->w = 0;
1905 return p->events; 2560 return p->events;
1906 } 2561 }
1907 else 2562 else
1908 return 0; 2563 return 0;
1909} 2564}
1910 2565
1911void inline_size 2566inline_size void
1912pri_adjust (EV_P_ W w) 2567pri_adjust (EV_P_ W w)
1913{ 2568{
1914 int pri = w->priority; 2569 int pri = ev_priority (w);
1915 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2570 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1916 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2571 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1917 w->priority = pri; 2572 ev_set_priority (w, pri);
1918} 2573}
1919 2574
1920void inline_speed 2575inline_speed void
1921ev_start (EV_P_ W w, int active) 2576ev_start (EV_P_ W w, int active)
1922{ 2577{
1923 pri_adjust (EV_A_ w); 2578 pri_adjust (EV_A_ w);
1924 w->active = active; 2579 w->active = active;
1925 ev_ref (EV_A); 2580 ev_ref (EV_A);
1926} 2581}
1927 2582
1928void inline_size 2583inline_size void
1929ev_stop (EV_P_ W w) 2584ev_stop (EV_P_ W w)
1930{ 2585{
1931 ev_unref (EV_A); 2586 ev_unref (EV_A);
1932 w->active = 0; 2587 w->active = 0;
1933} 2588}
… …
1940 int fd = w->fd; 2595 int fd = w->fd;
1941 2596
1942 if (expect_false (ev_is_active (w))) 2597 if (expect_false (ev_is_active (w)))
1943 return; 2598 return;
1944 2599
1945 assert (("ev_io_start called with negative fd", fd >= 0)); 2600 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2601 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2602
2603 EV_FREQUENT_CHECK;
1946 2604
1947 ev_start (EV_A_ (W)w, 1); 2605 ev_start (EV_A_ (W)w, 1);
1948 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2606 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1949 wlist_add (&anfds[fd].head, (WL)w); 2607 wlist_add (&anfds[fd].head, (WL)w);
1950 2608
1951 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2609 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1952 w->events &= ~EV_IOFDSET; 2610 w->events &= ~EV__IOFDSET;
2611
2612 EV_FREQUENT_CHECK;
1953} 2613}
1954 2614
1955void noinline 2615void noinline
1956ev_io_stop (EV_P_ ev_io *w) 2616ev_io_stop (EV_P_ ev_io *w)
1957{ 2617{
1958 clear_pending (EV_A_ (W)w); 2618 clear_pending (EV_A_ (W)w);
1959 if (expect_false (!ev_is_active (w))) 2619 if (expect_false (!ev_is_active (w)))
1960 return; 2620 return;
1961 2621
1962 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2622 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2623
2624 EV_FREQUENT_CHECK;
1963 2625
1964 wlist_del (&anfds[w->fd].head, (WL)w); 2626 wlist_del (&anfds[w->fd].head, (WL)w);
1965 ev_stop (EV_A_ (W)w); 2627 ev_stop (EV_A_ (W)w);
1966 2628
1967 fd_change (EV_A_ w->fd, 1); 2629 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2630
2631 EV_FREQUENT_CHECK;
1968} 2632}
1969 2633
1970void noinline 2634void noinline
1971ev_timer_start (EV_P_ ev_timer *w) 2635ev_timer_start (EV_P_ ev_timer *w)
1972{ 2636{
1973 if (expect_false (ev_is_active (w))) 2637 if (expect_false (ev_is_active (w)))
1974 return; 2638 return;
1975 2639
1976 ev_at (w) += mn_now; 2640 ev_at (w) += mn_now;
1977 2641
1978 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2642 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1979 2643
2644 EV_FREQUENT_CHECK;
2645
2646 ++timercnt;
1980 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2647 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1981 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2); 2648 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1982 timers [ev_active (w)] = (WT)w; 2649 ANHE_w (timers [ev_active (w)]) = (WT)w;
2650 ANHE_at_cache (timers [ev_active (w)]);
1983 upheap (timers, ev_active (w)); 2651 upheap (timers, ev_active (w));
1984 2652
2653 EV_FREQUENT_CHECK;
2654
1985 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ 2655 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1986} 2656}
1987 2657
1988void noinline 2658void noinline
1989ev_timer_stop (EV_P_ ev_timer *w) 2659ev_timer_stop (EV_P_ ev_timer *w)
1990{ 2660{
1991 clear_pending (EV_A_ (W)w); 2661 clear_pending (EV_A_ (W)w);
1992 if (expect_false (!ev_is_active (w))) 2662 if (expect_false (!ev_is_active (w)))
1993 return; 2663 return;
1994 2664
2665 EV_FREQUENT_CHECK;
2666
1995 { 2667 {
1996 int active = ev_active (w); 2668 int active = ev_active (w);
1997 2669
1998 assert (("internal timer heap corruption", timers [active] == (WT)w)); 2670 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1999 2671
2672 --timercnt;
2673
2000 if (expect_true (active < timercnt + HEAP0 - 1)) 2674 if (expect_true (active < timercnt + HEAP0))
2001 { 2675 {
2002 timers [active] = timers [timercnt + HEAP0 - 1]; 2676 timers [active] = timers [timercnt + HEAP0];
2003 adjustheap (timers, timercnt, active); 2677 adjustheap (timers, timercnt, active);
2004 } 2678 }
2005
2006 --timercnt;
2007 } 2679 }
2008 2680
2009 ev_at (w) -= mn_now; 2681 ev_at (w) -= mn_now;
2010 2682
2011 ev_stop (EV_A_ (W)w); 2683 ev_stop (EV_A_ (W)w);
2684
2685 EV_FREQUENT_CHECK;
2012} 2686}
2013 2687
2014void noinline 2688void noinline
2015ev_timer_again (EV_P_ ev_timer *w) 2689ev_timer_again (EV_P_ ev_timer *w)
2016{ 2690{
2691 EV_FREQUENT_CHECK;
2692
2017 if (ev_is_active (w)) 2693 if (ev_is_active (w))
2018 { 2694 {
2019 if (w->repeat) 2695 if (w->repeat)
2020 { 2696 {
2021 ev_at (w) = mn_now + w->repeat; 2697 ev_at (w) = mn_now + w->repeat;
2698 ANHE_at_cache (timers [ev_active (w)]);
2022 adjustheap (timers, timercnt, ev_active (w)); 2699 adjustheap (timers, timercnt, ev_active (w));
2023 } 2700 }
2024 else 2701 else
2025 ev_timer_stop (EV_A_ w); 2702 ev_timer_stop (EV_A_ w);
2026 } 2703 }
2027 else if (w->repeat) 2704 else if (w->repeat)
2028 { 2705 {
2029 ev_at (w) = w->repeat; 2706 ev_at (w) = w->repeat;
2030 ev_timer_start (EV_A_ w); 2707 ev_timer_start (EV_A_ w);
2031 } 2708 }
2709
2710 EV_FREQUENT_CHECK;
2711}
2712
2713ev_tstamp
2714ev_timer_remaining (EV_P_ ev_timer *w)
2715{
2716 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2032} 2717}
2033 2718
2034#if EV_PERIODIC_ENABLE 2719#if EV_PERIODIC_ENABLE
2035void noinline 2720void noinline
2036ev_periodic_start (EV_P_ ev_periodic *w) 2721ev_periodic_start (EV_P_ ev_periodic *w)
… …
2040 2725
2041 if (w->reschedule_cb) 2726 if (w->reschedule_cb)
2042 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2727 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2043 else if (w->interval) 2728 else if (w->interval)
2044 { 2729 {
2045 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2730 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2046 /* this formula differs from the one in periodic_reify because we do not always round up */ 2731 /* this formula differs from the one in periodic_reify because we do not always round up */
2047 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2732 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2048 } 2733 }
2049 else 2734 else
2050 ev_at (w) = w->offset; 2735 ev_at (w) = w->offset;
2051 2736
2737 EV_FREQUENT_CHECK;
2738
2739 ++periodiccnt;
2052 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2740 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2053 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2); 2741 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2054 periodics [ev_active (w)] = (WT)w; 2742 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2743 ANHE_at_cache (periodics [ev_active (w)]);
2055 upheap (periodics, ev_active (w)); 2744 upheap (periodics, ev_active (w));
2056 2745
2746 EV_FREQUENT_CHECK;
2747
2057 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ 2748 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2058} 2749}
2059 2750
2060void noinline 2751void noinline
2061ev_periodic_stop (EV_P_ ev_periodic *w) 2752ev_periodic_stop (EV_P_ ev_periodic *w)
2062{ 2753{
2063 clear_pending (EV_A_ (W)w); 2754 clear_pending (EV_A_ (W)w);
2064 if (expect_false (!ev_is_active (w))) 2755 if (expect_false (!ev_is_active (w)))
2065 return; 2756 return;
2066 2757
2758 EV_FREQUENT_CHECK;
2759
2067 { 2760 {
2068 int active = ev_active (w); 2761 int active = ev_active (w);
2069 2762
2070 assert (("internal periodic heap corruption", periodics [active] == (WT)w)); 2763 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2071 2764
2765 --periodiccnt;
2766
2072 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2767 if (expect_true (active < periodiccnt + HEAP0))
2073 { 2768 {
2074 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2769 periodics [active] = periodics [periodiccnt + HEAP0];
2075 adjustheap (periodics, periodiccnt, active); 2770 adjustheap (periodics, periodiccnt, active);
2076 } 2771 }
2077
2078 --periodiccnt;
2079 } 2772 }
2080 2773
2081 ev_stop (EV_A_ (W)w); 2774 ev_stop (EV_A_ (W)w);
2775
2776 EV_FREQUENT_CHECK;
2082} 2777}
2083 2778
2084void noinline 2779void noinline
2085ev_periodic_again (EV_P_ ev_periodic *w) 2780ev_periodic_again (EV_P_ ev_periodic *w)
2086{ 2781{
… …
2092 2787
2093#ifndef SA_RESTART 2788#ifndef SA_RESTART
2094# define SA_RESTART 0 2789# define SA_RESTART 0
2095#endif 2790#endif
2096 2791
2792#if EV_SIGNAL_ENABLE
2793
2097void noinline 2794void noinline
2098ev_signal_start (EV_P_ ev_signal *w) 2795ev_signal_start (EV_P_ ev_signal *w)
2099{ 2796{
2100#if EV_MULTIPLICITY
2101 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2102#endif
2103 if (expect_false (ev_is_active (w))) 2797 if (expect_false (ev_is_active (w)))
2104 return; 2798 return;
2105 2799
2106 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2800 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2107 2801
2108 evpipe_init (EV_A); 2802#if EV_MULTIPLICITY
2803 assert (("libev: a signal must not be attached to two different loops",
2804 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2109 2805
2806 signals [w->signum - 1].loop = EV_A;
2807#endif
2808
2809 EV_FREQUENT_CHECK;
2810
2811#if EV_USE_SIGNALFD
2812 if (sigfd == -2)
2110 { 2813 {
2111#ifndef _WIN32 2814 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2112 sigset_t full, prev; 2815 if (sigfd < 0 && errno == EINVAL)
2113 sigfillset (&full); 2816 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2114 sigprocmask (SIG_SETMASK, &full, &prev);
2115#endif
2116 2817
2117 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2818 if (sigfd >= 0)
2819 {
2820 fd_intern (sigfd); /* doing it twice will not hurt */
2118 2821
2119#ifndef _WIN32 2822 sigemptyset (&sigfd_set);
2120 sigprocmask (SIG_SETMASK, &prev, 0); 2823
2121#endif 2824 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2825 ev_set_priority (&sigfd_w, EV_MAXPRI);
2826 ev_io_start (EV_A_ &sigfd_w);
2827 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2828 }
2122 } 2829 }
2830
2831 if (sigfd >= 0)
2832 {
2833 /* TODO: check .head */
2834 sigaddset (&sigfd_set, w->signum);
2835 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2836
2837 signalfd (sigfd, &sigfd_set, 0);
2838 }
2839#endif
2123 2840
2124 ev_start (EV_A_ (W)w, 1); 2841 ev_start (EV_A_ (W)w, 1);
2125 wlist_add (&signals [w->signum - 1].head, (WL)w); 2842 wlist_add (&signals [w->signum - 1].head, (WL)w);
2126 2843
2127 if (!((WL)w)->next) 2844 if (!((WL)w)->next)
2845# if EV_USE_SIGNALFD
2846 if (sigfd < 0) /*TODO*/
2847# endif
2128 { 2848 {
2129#if _WIN32 2849# ifdef _WIN32
2850 evpipe_init (EV_A);
2851
2130 signal (w->signum, ev_sighandler); 2852 signal (w->signum, ev_sighandler);
2131#else 2853# else
2132 struct sigaction sa; 2854 struct sigaction sa;
2855
2856 evpipe_init (EV_A);
2857
2133 sa.sa_handler = ev_sighandler; 2858 sa.sa_handler = ev_sighandler;
2134 sigfillset (&sa.sa_mask); 2859 sigfillset (&sa.sa_mask);
2135 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2860 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2136 sigaction (w->signum, &sa, 0); 2861 sigaction (w->signum, &sa, 0);
2862
2863 sigemptyset (&sa.sa_mask);
2864 sigaddset (&sa.sa_mask, w->signum);
2865 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2137#endif 2866#endif
2138 } 2867 }
2868
2869 EV_FREQUENT_CHECK;
2139} 2870}
2140 2871
2141void noinline 2872void noinline
2142ev_signal_stop (EV_P_ ev_signal *w) 2873ev_signal_stop (EV_P_ ev_signal *w)
2143{ 2874{
2144 clear_pending (EV_A_ (W)w); 2875 clear_pending (EV_A_ (W)w);
2145 if (expect_false (!ev_is_active (w))) 2876 if (expect_false (!ev_is_active (w)))
2146 return; 2877 return;
2147 2878
2879 EV_FREQUENT_CHECK;
2880
2148 wlist_del (&signals [w->signum - 1].head, (WL)w); 2881 wlist_del (&signals [w->signum - 1].head, (WL)w);
2149 ev_stop (EV_A_ (W)w); 2882 ev_stop (EV_A_ (W)w);
2150 2883
2151 if (!signals [w->signum - 1].head) 2884 if (!signals [w->signum - 1].head)
2885 {
2886#if EV_MULTIPLICITY
2887 signals [w->signum - 1].loop = 0; /* unattach from signal */
2888#endif
2889#if EV_USE_SIGNALFD
2890 if (sigfd >= 0)
2891 {
2892 sigset_t ss;
2893
2894 sigemptyset (&ss);
2895 sigaddset (&ss, w->signum);
2896 sigdelset (&sigfd_set, w->signum);
2897
2898 signalfd (sigfd, &sigfd_set, 0);
2899 sigprocmask (SIG_UNBLOCK, &ss, 0);
2900 }
2901 else
2902#endif
2152 signal (w->signum, SIG_DFL); 2903 signal (w->signum, SIG_DFL);
2904 }
2905
2906 EV_FREQUENT_CHECK;
2153} 2907}
2908
2909#endif
2910
2911#if EV_CHILD_ENABLE
2154 2912
2155void 2913void
2156ev_child_start (EV_P_ ev_child *w) 2914ev_child_start (EV_P_ ev_child *w)
2157{ 2915{
2158#if EV_MULTIPLICITY 2916#if EV_MULTIPLICITY
2159 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2917 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2160#endif 2918#endif
2161 if (expect_false (ev_is_active (w))) 2919 if (expect_false (ev_is_active (w)))
2162 return; 2920 return;
2163 2921
2922 EV_FREQUENT_CHECK;
2923
2164 ev_start (EV_A_ (W)w, 1); 2924 ev_start (EV_A_ (W)w, 1);
2165 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2925 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2926
2927 EV_FREQUENT_CHECK;
2166} 2928}
2167 2929
2168void 2930void
2169ev_child_stop (EV_P_ ev_child *w) 2931ev_child_stop (EV_P_ ev_child *w)
2170{ 2932{
2171 clear_pending (EV_A_ (W)w); 2933 clear_pending (EV_A_ (W)w);
2172 if (expect_false (!ev_is_active (w))) 2934 if (expect_false (!ev_is_active (w)))
2173 return; 2935 return;
2174 2936
2937 EV_FREQUENT_CHECK;
2938
2175 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2939 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2176 ev_stop (EV_A_ (W)w); 2940 ev_stop (EV_A_ (W)w);
2941
2942 EV_FREQUENT_CHECK;
2177} 2943}
2944
2945#endif
2178 2946
2179#if EV_STAT_ENABLE 2947#if EV_STAT_ENABLE
2180 2948
2181# ifdef _WIN32 2949# ifdef _WIN32
2182# undef lstat 2950# undef lstat
2183# define lstat(a,b) _stati64 (a,b) 2951# define lstat(a,b) _stati64 (a,b)
2184# endif 2952# endif
2185 2953
2186#define DEF_STAT_INTERVAL 5.0074891 2954#define DEF_STAT_INTERVAL 5.0074891
2955#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2187#define MIN_STAT_INTERVAL 0.1074891 2956#define MIN_STAT_INTERVAL 0.1074891
2188 2957
2189static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2958static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2190 2959
2191#if EV_USE_INOTIFY 2960#if EV_USE_INOTIFY
2192# define EV_INOTIFY_BUFSIZE 8192 2961
2962/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2963# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2193 2964
2194static void noinline 2965static void noinline
2195infy_add (EV_P_ ev_stat *w) 2966infy_add (EV_P_ ev_stat *w)
2196{ 2967{
2197 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); 2968 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);
2198 2969
2199 if (w->wd < 0) 2970 if (w->wd >= 0)
2971 {
2972 struct statfs sfs;
2973
2974 /* now local changes will be tracked by inotify, but remote changes won't */
2975 /* unless the filesystem is known to be local, we therefore still poll */
2976 /* also do poll on <2.6.25, but with normal frequency */
2977
2978 if (!fs_2625)
2979 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2980 else if (!statfs (w->path, &sfs)
2981 && (sfs.f_type == 0x1373 /* devfs */
2982 || sfs.f_type == 0xEF53 /* ext2/3 */
2983 || sfs.f_type == 0x3153464a /* jfs */
2984 || sfs.f_type == 0x52654973 /* reiser3 */
2985 || sfs.f_type == 0x01021994 /* tempfs */
2986 || sfs.f_type == 0x58465342 /* xfs */))
2987 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2988 else
2989 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2200 { 2990 }
2201 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2991 else
2992 {
2993 /* can't use inotify, continue to stat */
2994 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2202 2995
2203 /* monitor some parent directory for speedup hints */ 2996 /* if path is not there, monitor some parent directory for speedup hints */
2204 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2997 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2205 /* but an efficiency issue only */ 2998 /* but an efficiency issue only */
2206 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2999 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2207 { 3000 {
2208 char path [4096]; 3001 char path [4096];
2209 strcpy (path, w->path); 3002 strcpy (path, w->path);
… …
2213 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3006 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2214 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3007 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2215 3008
2216 char *pend = strrchr (path, '/'); 3009 char *pend = strrchr (path, '/');
2217 3010
2218 if (!pend) 3011 if (!pend || pend == path)
2219 break; /* whoops, no '/', complain to your admin */ 3012 break;
2220 3013
2221 *pend = 0; 3014 *pend = 0;
2222 w->wd = inotify_add_watch (fs_fd, path, mask); 3015 w->wd = inotify_add_watch (fs_fd, path, mask);
2223 } 3016 }
2224 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3017 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2225 } 3018 }
2226 } 3019 }
2227 else
2228 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2229 3020
2230 if (w->wd >= 0) 3021 if (w->wd >= 0)
2231 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3022 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3023
3024 /* now re-arm timer, if required */
3025 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3026 ev_timer_again (EV_A_ &w->timer);
3027 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2232} 3028}
2233 3029
2234static void noinline 3030static void noinline
2235infy_del (EV_P_ ev_stat *w) 3031infy_del (EV_P_ ev_stat *w)
2236{ 3032{
… …
2239 3035
2240 if (wd < 0) 3036 if (wd < 0)
2241 return; 3037 return;
2242 3038
2243 w->wd = -2; 3039 w->wd = -2;
2244 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3040 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2245 wlist_del (&fs_hash [slot].head, (WL)w); 3041 wlist_del (&fs_hash [slot].head, (WL)w);
2246 3042
2247 /* remove this watcher, if others are watching it, they will rearm */ 3043 /* remove this watcher, if others are watching it, they will rearm */
2248 inotify_rm_watch (fs_fd, wd); 3044 inotify_rm_watch (fs_fd, wd);
2249} 3045}
2250 3046
2251static void noinline 3047static void noinline
2252infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3048infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2253{ 3049{
2254 if (slot < 0) 3050 if (slot < 0)
2255 /* overflow, need to check for all hahs slots */ 3051 /* overflow, need to check for all hash slots */
2256 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3052 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2257 infy_wd (EV_A_ slot, wd, ev); 3053 infy_wd (EV_A_ slot, wd, ev);
2258 else 3054 else
2259 { 3055 {
2260 WL w_; 3056 WL w_;
2261 3057
2262 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3058 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2263 { 3059 {
2264 ev_stat *w = (ev_stat *)w_; 3060 ev_stat *w = (ev_stat *)w_;
2265 w_ = w_->next; /* lets us remove this watcher and all before it */ 3061 w_ = w_->next; /* lets us remove this watcher and all before it */
2266 3062
2267 if (w->wd == wd || wd == -1) 3063 if (w->wd == wd || wd == -1)
2268 { 3064 {
2269 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3065 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2270 { 3066 {
3067 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2271 w->wd = -1; 3068 w->wd = -1;
2272 infy_add (EV_A_ w); /* re-add, no matter what */ 3069 infy_add (EV_A_ w); /* re-add, no matter what */
2273 } 3070 }
2274 3071
2275 stat_timer_cb (EV_A_ &w->timer, 0); 3072 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2280 3077
2281static void 3078static void
2282infy_cb (EV_P_ ev_io *w, int revents) 3079infy_cb (EV_P_ ev_io *w, int revents)
2283{ 3080{
2284 char buf [EV_INOTIFY_BUFSIZE]; 3081 char buf [EV_INOTIFY_BUFSIZE];
2285 struct inotify_event *ev = (struct inotify_event *)buf;
2286 int ofs; 3082 int ofs;
2287 int len = read (fs_fd, buf, sizeof (buf)); 3083 int len = read (fs_fd, buf, sizeof (buf));
2288 3084
2289 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3085 for (ofs = 0; ofs < len; )
3086 {
3087 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2290 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3088 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3089 ofs += sizeof (struct inotify_event) + ev->len;
3090 }
2291} 3091}
2292 3092
2293void inline_size 3093inline_size void
3094ev_check_2625 (EV_P)
3095{
3096 /* kernels < 2.6.25 are borked
3097 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3098 */
3099 if (ev_linux_version () < 0x020619)
3100 return;
3101
3102 fs_2625 = 1;
3103}
3104
3105inline_size int
3106infy_newfd (void)
3107{
3108#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3109 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3110 if (fd >= 0)
3111 return fd;
3112#endif
3113 return inotify_init ();
3114}
3115
3116inline_size void
2294infy_init (EV_P) 3117infy_init (EV_P)
2295{ 3118{
2296 if (fs_fd != -2) 3119 if (fs_fd != -2)
2297 return; 3120 return;
2298 3121
3122 fs_fd = -1;
3123
3124 ev_check_2625 (EV_A);
3125
2299 fs_fd = inotify_init (); 3126 fs_fd = infy_newfd ();
2300 3127
2301 if (fs_fd >= 0) 3128 if (fs_fd >= 0)
2302 { 3129 {
3130 fd_intern (fs_fd);
2303 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3131 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2304 ev_set_priority (&fs_w, EV_MAXPRI); 3132 ev_set_priority (&fs_w, EV_MAXPRI);
2305 ev_io_start (EV_A_ &fs_w); 3133 ev_io_start (EV_A_ &fs_w);
3134 ev_unref (EV_A);
2306 } 3135 }
2307} 3136}
2308 3137
2309void inline_size 3138inline_size void
2310infy_fork (EV_P) 3139infy_fork (EV_P)
2311{ 3140{
2312 int slot; 3141 int slot;
2313 3142
2314 if (fs_fd < 0) 3143 if (fs_fd < 0)
2315 return; 3144 return;
2316 3145
3146 ev_ref (EV_A);
3147 ev_io_stop (EV_A_ &fs_w);
2317 close (fs_fd); 3148 close (fs_fd);
2318 fs_fd = inotify_init (); 3149 fs_fd = infy_newfd ();
2319 3150
3151 if (fs_fd >= 0)
3152 {
3153 fd_intern (fs_fd);
3154 ev_io_set (&fs_w, fs_fd, EV_READ);
3155 ev_io_start (EV_A_ &fs_w);
3156 ev_unref (EV_A);
3157 }
3158
2320 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3159 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2321 { 3160 {
2322 WL w_ = fs_hash [slot].head; 3161 WL w_ = fs_hash [slot].head;
2323 fs_hash [slot].head = 0; 3162 fs_hash [slot].head = 0;
2324 3163
2325 while (w_) 3164 while (w_)
… …
2330 w->wd = -1; 3169 w->wd = -1;
2331 3170
2332 if (fs_fd >= 0) 3171 if (fs_fd >= 0)
2333 infy_add (EV_A_ w); /* re-add, no matter what */ 3172 infy_add (EV_A_ w); /* re-add, no matter what */
2334 else 3173 else
3174 {
3175 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3176 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2335 ev_timer_start (EV_A_ &w->timer); 3177 ev_timer_again (EV_A_ &w->timer);
3178 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3179 }
2336 } 3180 }
2337
2338 } 3181 }
2339} 3182}
2340 3183
3184#endif
3185
3186#ifdef _WIN32
3187# define EV_LSTAT(p,b) _stati64 (p, b)
3188#else
3189# define EV_LSTAT(p,b) lstat (p, b)
2341#endif 3190#endif
2342 3191
2343void 3192void
2344ev_stat_stat (EV_P_ ev_stat *w) 3193ev_stat_stat (EV_P_ ev_stat *w)
2345{ 3194{
… …
2352static void noinline 3201static void noinline
2353stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3202stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2354{ 3203{
2355 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3204 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2356 3205
2357 /* we copy this here each the time so that */ 3206 ev_statdata prev = w->attr;
2358 /* prev has the old value when the callback gets invoked */
2359 w->prev = w->attr;
2360 ev_stat_stat (EV_A_ w); 3207 ev_stat_stat (EV_A_ w);
2361 3208
2362 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3209 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2363 if ( 3210 if (
2364 w->prev.st_dev != w->attr.st_dev 3211 prev.st_dev != w->attr.st_dev
2365 || w->prev.st_ino != w->attr.st_ino 3212 || prev.st_ino != w->attr.st_ino
2366 || w->prev.st_mode != w->attr.st_mode 3213 || prev.st_mode != w->attr.st_mode
2367 || w->prev.st_nlink != w->attr.st_nlink 3214 || prev.st_nlink != w->attr.st_nlink
2368 || w->prev.st_uid != w->attr.st_uid 3215 || prev.st_uid != w->attr.st_uid
2369 || w->prev.st_gid != w->attr.st_gid 3216 || prev.st_gid != w->attr.st_gid
2370 || w->prev.st_rdev != w->attr.st_rdev 3217 || prev.st_rdev != w->attr.st_rdev
2371 || w->prev.st_size != w->attr.st_size 3218 || prev.st_size != w->attr.st_size
2372 || w->prev.st_atime != w->attr.st_atime 3219 || prev.st_atime != w->attr.st_atime
2373 || w->prev.st_mtime != w->attr.st_mtime 3220 || prev.st_mtime != w->attr.st_mtime
2374 || w->prev.st_ctime != w->attr.st_ctime 3221 || prev.st_ctime != w->attr.st_ctime
2375 ) { 3222 ) {
3223 /* we only update w->prev on actual differences */
3224 /* in case we test more often than invoke the callback, */
3225 /* to ensure that prev is always different to attr */
3226 w->prev = prev;
3227
2376 #if EV_USE_INOTIFY 3228 #if EV_USE_INOTIFY
3229 if (fs_fd >= 0)
3230 {
2377 infy_del (EV_A_ w); 3231 infy_del (EV_A_ w);
2378 infy_add (EV_A_ w); 3232 infy_add (EV_A_ w);
2379 ev_stat_stat (EV_A_ w); /* avoid race... */ 3233 ev_stat_stat (EV_A_ w); /* avoid race... */
3234 }
2380 #endif 3235 #endif
2381 3236
2382 ev_feed_event (EV_A_ w, EV_STAT); 3237 ev_feed_event (EV_A_ w, EV_STAT);
2383 } 3238 }
2384} 3239}
… …
2387ev_stat_start (EV_P_ ev_stat *w) 3242ev_stat_start (EV_P_ ev_stat *w)
2388{ 3243{
2389 if (expect_false (ev_is_active (w))) 3244 if (expect_false (ev_is_active (w)))
2390 return; 3245 return;
2391 3246
2392 /* since we use memcmp, we need to clear any padding data etc. */
2393 memset (&w->prev, 0, sizeof (ev_statdata));
2394 memset (&w->attr, 0, sizeof (ev_statdata));
2395
2396 ev_stat_stat (EV_A_ w); 3247 ev_stat_stat (EV_A_ w);
2397 3248
3249 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2398 if (w->interval < MIN_STAT_INTERVAL) 3250 w->interval = MIN_STAT_INTERVAL;
2399 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2400 3251
2401 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3252 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2402 ev_set_priority (&w->timer, ev_priority (w)); 3253 ev_set_priority (&w->timer, ev_priority (w));
2403 3254
2404#if EV_USE_INOTIFY 3255#if EV_USE_INOTIFY
2405 infy_init (EV_A); 3256 infy_init (EV_A);
2406 3257
2407 if (fs_fd >= 0) 3258 if (fs_fd >= 0)
2408 infy_add (EV_A_ w); 3259 infy_add (EV_A_ w);
2409 else 3260 else
2410#endif 3261#endif
3262 {
2411 ev_timer_start (EV_A_ &w->timer); 3263 ev_timer_again (EV_A_ &w->timer);
3264 ev_unref (EV_A);
3265 }
2412 3266
2413 ev_start (EV_A_ (W)w, 1); 3267 ev_start (EV_A_ (W)w, 1);
3268
3269 EV_FREQUENT_CHECK;
2414} 3270}
2415 3271
2416void 3272void
2417ev_stat_stop (EV_P_ ev_stat *w) 3273ev_stat_stop (EV_P_ ev_stat *w)
2418{ 3274{
2419 clear_pending (EV_A_ (W)w); 3275 clear_pending (EV_A_ (W)w);
2420 if (expect_false (!ev_is_active (w))) 3276 if (expect_false (!ev_is_active (w)))
2421 return; 3277 return;
2422 3278
3279 EV_FREQUENT_CHECK;
3280
2423#if EV_USE_INOTIFY 3281#if EV_USE_INOTIFY
2424 infy_del (EV_A_ w); 3282 infy_del (EV_A_ w);
2425#endif 3283#endif
3284
3285 if (ev_is_active (&w->timer))
3286 {
3287 ev_ref (EV_A);
2426 ev_timer_stop (EV_A_ &w->timer); 3288 ev_timer_stop (EV_A_ &w->timer);
3289 }
2427 3290
2428 ev_stop (EV_A_ (W)w); 3291 ev_stop (EV_A_ (W)w);
3292
3293 EV_FREQUENT_CHECK;
2429} 3294}
2430#endif 3295#endif
2431 3296
2432#if EV_IDLE_ENABLE 3297#if EV_IDLE_ENABLE
2433void 3298void
… …
2436 if (expect_false (ev_is_active (w))) 3301 if (expect_false (ev_is_active (w)))
2437 return; 3302 return;
2438 3303
2439 pri_adjust (EV_A_ (W)w); 3304 pri_adjust (EV_A_ (W)w);
2440 3305
3306 EV_FREQUENT_CHECK;
3307
2441 { 3308 {
2442 int active = ++idlecnt [ABSPRI (w)]; 3309 int active = ++idlecnt [ABSPRI (w)];
2443 3310
2444 ++idleall; 3311 ++idleall;
2445 ev_start (EV_A_ (W)w, active); 3312 ev_start (EV_A_ (W)w, active);
2446 3313
2447 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3314 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2448 idles [ABSPRI (w)][active - 1] = w; 3315 idles [ABSPRI (w)][active - 1] = w;
2449 } 3316 }
3317
3318 EV_FREQUENT_CHECK;
2450} 3319}
2451 3320
2452void 3321void
2453ev_idle_stop (EV_P_ ev_idle *w) 3322ev_idle_stop (EV_P_ ev_idle *w)
2454{ 3323{
2455 clear_pending (EV_A_ (W)w); 3324 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w))) 3325 if (expect_false (!ev_is_active (w)))
2457 return; 3326 return;
2458 3327
3328 EV_FREQUENT_CHECK;
3329
2459 { 3330 {
2460 int active = ev_active (w); 3331 int active = ev_active (w);
2461 3332
2462 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3333 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2463 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3334 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2464 3335
2465 ev_stop (EV_A_ (W)w); 3336 ev_stop (EV_A_ (W)w);
2466 --idleall; 3337 --idleall;
2467 } 3338 }
2468}
2469#endif
2470 3339
3340 EV_FREQUENT_CHECK;
3341}
3342#endif
3343
3344#if EV_PREPARE_ENABLE
2471void 3345void
2472ev_prepare_start (EV_P_ ev_prepare *w) 3346ev_prepare_start (EV_P_ ev_prepare *w)
2473{ 3347{
2474 if (expect_false (ev_is_active (w))) 3348 if (expect_false (ev_is_active (w)))
2475 return; 3349 return;
3350
3351 EV_FREQUENT_CHECK;
2476 3352
2477 ev_start (EV_A_ (W)w, ++preparecnt); 3353 ev_start (EV_A_ (W)w, ++preparecnt);
2478 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3354 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2479 prepares [preparecnt - 1] = w; 3355 prepares [preparecnt - 1] = w;
3356
3357 EV_FREQUENT_CHECK;
2480} 3358}
2481 3359
2482void 3360void
2483ev_prepare_stop (EV_P_ ev_prepare *w) 3361ev_prepare_stop (EV_P_ ev_prepare *w)
2484{ 3362{
2485 clear_pending (EV_A_ (W)w); 3363 clear_pending (EV_A_ (W)w);
2486 if (expect_false (!ev_is_active (w))) 3364 if (expect_false (!ev_is_active (w)))
2487 return; 3365 return;
2488 3366
3367 EV_FREQUENT_CHECK;
3368
2489 { 3369 {
2490 int active = ev_active (w); 3370 int active = ev_active (w);
2491 3371
2492 prepares [active - 1] = prepares [--preparecnt]; 3372 prepares [active - 1] = prepares [--preparecnt];
2493 ev_active (prepares [active - 1]) = active; 3373 ev_active (prepares [active - 1]) = active;
2494 } 3374 }
2495 3375
2496 ev_stop (EV_A_ (W)w); 3376 ev_stop (EV_A_ (W)w);
2497}
2498 3377
3378 EV_FREQUENT_CHECK;
3379}
3380#endif
3381
3382#if EV_CHECK_ENABLE
2499void 3383void
2500ev_check_start (EV_P_ ev_check *w) 3384ev_check_start (EV_P_ ev_check *w)
2501{ 3385{
2502 if (expect_false (ev_is_active (w))) 3386 if (expect_false (ev_is_active (w)))
2503 return; 3387 return;
3388
3389 EV_FREQUENT_CHECK;
2504 3390
2505 ev_start (EV_A_ (W)w, ++checkcnt); 3391 ev_start (EV_A_ (W)w, ++checkcnt);
2506 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3392 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2507 checks [checkcnt - 1] = w; 3393 checks [checkcnt - 1] = w;
3394
3395 EV_FREQUENT_CHECK;
2508} 3396}
2509 3397
2510void 3398void
2511ev_check_stop (EV_P_ ev_check *w) 3399ev_check_stop (EV_P_ ev_check *w)
2512{ 3400{
2513 clear_pending (EV_A_ (W)w); 3401 clear_pending (EV_A_ (W)w);
2514 if (expect_false (!ev_is_active (w))) 3402 if (expect_false (!ev_is_active (w)))
2515 return; 3403 return;
2516 3404
3405 EV_FREQUENT_CHECK;
3406
2517 { 3407 {
2518 int active = ev_active (w); 3408 int active = ev_active (w);
2519 3409
2520 checks [active - 1] = checks [--checkcnt]; 3410 checks [active - 1] = checks [--checkcnt];
2521 ev_active (checks [active - 1]) = active; 3411 ev_active (checks [active - 1]) = active;
2522 } 3412 }
2523 3413
2524 ev_stop (EV_A_ (W)w); 3414 ev_stop (EV_A_ (W)w);
3415
3416 EV_FREQUENT_CHECK;
2525} 3417}
3418#endif
2526 3419
2527#if EV_EMBED_ENABLE 3420#if EV_EMBED_ENABLE
2528void noinline 3421void noinline
2529ev_embed_sweep (EV_P_ ev_embed *w) 3422ev_embed_sweep (EV_P_ ev_embed *w)
2530{ 3423{
2531 ev_loop (w->other, EVLOOP_NONBLOCK); 3424 ev_run (w->other, EVRUN_NOWAIT);
2532} 3425}
2533 3426
2534static void 3427static void
2535embed_io_cb (EV_P_ ev_io *io, int revents) 3428embed_io_cb (EV_P_ ev_io *io, int revents)
2536{ 3429{
2537 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3430 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2538 3431
2539 if (ev_cb (w)) 3432 if (ev_cb (w))
2540 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3433 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2541 else 3434 else
2542 ev_loop (w->other, EVLOOP_NONBLOCK); 3435 ev_run (w->other, EVRUN_NOWAIT);
2543} 3436}
2544 3437
2545static void 3438static void
2546embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3439embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2547{ 3440{
2548 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3441 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2549 3442
2550 { 3443 {
2551 struct ev_loop *loop = w->other; 3444 EV_P = w->other;
2552 3445
2553 while (fdchangecnt) 3446 while (fdchangecnt)
2554 { 3447 {
2555 fd_reify (EV_A); 3448 fd_reify (EV_A);
2556 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3449 ev_run (EV_A_ EVRUN_NOWAIT);
2557 } 3450 }
2558 } 3451 }
3452}
3453
3454static void
3455embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3456{
3457 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3458
3459 ev_embed_stop (EV_A_ w);
3460
3461 {
3462 EV_P = w->other;
3463
3464 ev_loop_fork (EV_A);
3465 ev_run (EV_A_ EVRUN_NOWAIT);
3466 }
3467
3468 ev_embed_start (EV_A_ w);
2559} 3469}
2560 3470
2561#if 0 3471#if 0
2562static void 3472static void
2563embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3473embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2571{ 3481{
2572 if (expect_false (ev_is_active (w))) 3482 if (expect_false (ev_is_active (w)))
2573 return; 3483 return;
2574 3484
2575 { 3485 {
2576 struct ev_loop *loop = w->other; 3486 EV_P = w->other;
2577 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3487 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2578 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3488 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2579 } 3489 }
3490
3491 EV_FREQUENT_CHECK;
2580 3492
2581 ev_set_priority (&w->io, ev_priority (w)); 3493 ev_set_priority (&w->io, ev_priority (w));
2582 ev_io_start (EV_A_ &w->io); 3494 ev_io_start (EV_A_ &w->io);
2583 3495
2584 ev_prepare_init (&w->prepare, embed_prepare_cb); 3496 ev_prepare_init (&w->prepare, embed_prepare_cb);
2585 ev_set_priority (&w->prepare, EV_MINPRI); 3497 ev_set_priority (&w->prepare, EV_MINPRI);
2586 ev_prepare_start (EV_A_ &w->prepare); 3498 ev_prepare_start (EV_A_ &w->prepare);
2587 3499
3500 ev_fork_init (&w->fork, embed_fork_cb);
3501 ev_fork_start (EV_A_ &w->fork);
3502
2588 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3503 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2589 3504
2590 ev_start (EV_A_ (W)w, 1); 3505 ev_start (EV_A_ (W)w, 1);
3506
3507 EV_FREQUENT_CHECK;
2591} 3508}
2592 3509
2593void 3510void
2594ev_embed_stop (EV_P_ ev_embed *w) 3511ev_embed_stop (EV_P_ ev_embed *w)
2595{ 3512{
2596 clear_pending (EV_A_ (W)w); 3513 clear_pending (EV_A_ (W)w);
2597 if (expect_false (!ev_is_active (w))) 3514 if (expect_false (!ev_is_active (w)))
2598 return; 3515 return;
2599 3516
3517 EV_FREQUENT_CHECK;
3518
2600 ev_io_stop (EV_A_ &w->io); 3519 ev_io_stop (EV_A_ &w->io);
2601 ev_prepare_stop (EV_A_ &w->prepare); 3520 ev_prepare_stop (EV_A_ &w->prepare);
3521 ev_fork_stop (EV_A_ &w->fork);
2602 3522
2603 ev_stop (EV_A_ (W)w); 3523 ev_stop (EV_A_ (W)w);
3524
3525 EV_FREQUENT_CHECK;
2604} 3526}
2605#endif 3527#endif
2606 3528
2607#if EV_FORK_ENABLE 3529#if EV_FORK_ENABLE
2608void 3530void
2609ev_fork_start (EV_P_ ev_fork *w) 3531ev_fork_start (EV_P_ ev_fork *w)
2610{ 3532{
2611 if (expect_false (ev_is_active (w))) 3533 if (expect_false (ev_is_active (w)))
2612 return; 3534 return;
2613 3535
3536 EV_FREQUENT_CHECK;
3537
2614 ev_start (EV_A_ (W)w, ++forkcnt); 3538 ev_start (EV_A_ (W)w, ++forkcnt);
2615 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3539 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2616 forks [forkcnt - 1] = w; 3540 forks [forkcnt - 1] = w;
3541
3542 EV_FREQUENT_CHECK;
2617} 3543}
2618 3544
2619void 3545void
2620ev_fork_stop (EV_P_ ev_fork *w) 3546ev_fork_stop (EV_P_ ev_fork *w)
2621{ 3547{
2622 clear_pending (EV_A_ (W)w); 3548 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 3549 if (expect_false (!ev_is_active (w)))
2624 return; 3550 return;
2625 3551
3552 EV_FREQUENT_CHECK;
3553
2626 { 3554 {
2627 int active = ev_active (w); 3555 int active = ev_active (w);
2628 3556
2629 forks [active - 1] = forks [--forkcnt]; 3557 forks [active - 1] = forks [--forkcnt];
2630 ev_active (forks [active - 1]) = active; 3558 ev_active (forks [active - 1]) = active;
2631 } 3559 }
2632 3560
2633 ev_stop (EV_A_ (W)w); 3561 ev_stop (EV_A_ (W)w);
3562
3563 EV_FREQUENT_CHECK;
2634} 3564}
2635#endif 3565#endif
2636 3566
2637#if EV_ASYNC_ENABLE 3567#if EV_ASYNC_ENABLE
2638void 3568void
2639ev_async_start (EV_P_ ev_async *w) 3569ev_async_start (EV_P_ ev_async *w)
2640{ 3570{
2641 if (expect_false (ev_is_active (w))) 3571 if (expect_false (ev_is_active (w)))
2642 return; 3572 return;
2643 3573
3574 w->sent = 0;
3575
2644 evpipe_init (EV_A); 3576 evpipe_init (EV_A);
3577
3578 EV_FREQUENT_CHECK;
2645 3579
2646 ev_start (EV_A_ (W)w, ++asynccnt); 3580 ev_start (EV_A_ (W)w, ++asynccnt);
2647 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3581 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2648 asyncs [asynccnt - 1] = w; 3582 asyncs [asynccnt - 1] = w;
3583
3584 EV_FREQUENT_CHECK;
2649} 3585}
2650 3586
2651void 3587void
2652ev_async_stop (EV_P_ ev_async *w) 3588ev_async_stop (EV_P_ ev_async *w)
2653{ 3589{
2654 clear_pending (EV_A_ (W)w); 3590 clear_pending (EV_A_ (W)w);
2655 if (expect_false (!ev_is_active (w))) 3591 if (expect_false (!ev_is_active (w)))
2656 return; 3592 return;
2657 3593
3594 EV_FREQUENT_CHECK;
3595
2658 { 3596 {
2659 int active = ev_active (w); 3597 int active = ev_active (w);
2660 3598
2661 asyncs [active - 1] = asyncs [--asynccnt]; 3599 asyncs [active - 1] = asyncs [--asynccnt];
2662 ev_active (asyncs [active - 1]) = active; 3600 ev_active (asyncs [active - 1]) = active;
2663 } 3601 }
2664 3602
2665 ev_stop (EV_A_ (W)w); 3603 ev_stop (EV_A_ (W)w);
3604
3605 EV_FREQUENT_CHECK;
2666} 3606}
2667 3607
2668void 3608void
2669ev_async_send (EV_P_ ev_async *w) 3609ev_async_send (EV_P_ ev_async *w)
2670{ 3610{
2671 w->sent = 1; 3611 w->sent = 1;
2672 evpipe_write (EV_A_ &gotasync); 3612 evpipe_write (EV_A_ &async_pending);
2673} 3613}
2674#endif 3614#endif
2675 3615
2676/*****************************************************************************/ 3616/*****************************************************************************/
2677 3617
… …
2687once_cb (EV_P_ struct ev_once *once, int revents) 3627once_cb (EV_P_ struct ev_once *once, int revents)
2688{ 3628{
2689 void (*cb)(int revents, void *arg) = once->cb; 3629 void (*cb)(int revents, void *arg) = once->cb;
2690 void *arg = once->arg; 3630 void *arg = once->arg;
2691 3631
2692 ev_io_stop (EV_A_ &once->io); 3632 ev_io_stop (EV_A_ &once->io);
2693 ev_timer_stop (EV_A_ &once->to); 3633 ev_timer_stop (EV_A_ &once->to);
2694 ev_free (once); 3634 ev_free (once);
2695 3635
2696 cb (revents, arg); 3636 cb (revents, arg);
2697} 3637}
2698 3638
2699static void 3639static void
2700once_cb_io (EV_P_ ev_io *w, int revents) 3640once_cb_io (EV_P_ ev_io *w, int revents)
2701{ 3641{
2702 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3642 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3643
3644 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2703} 3645}
2704 3646
2705static void 3647static void
2706once_cb_to (EV_P_ ev_timer *w, int revents) 3648once_cb_to (EV_P_ ev_timer *w, int revents)
2707{ 3649{
2708 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3650 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3651
3652 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2709} 3653}
2710 3654
2711void 3655void
2712ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3656ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2713{ 3657{
2714 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3658 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2715 3659
2716 if (expect_false (!once)) 3660 if (expect_false (!once))
2717 { 3661 {
2718 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3662 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2719 return; 3663 return;
2720 } 3664 }
2721 3665
2722 once->cb = cb; 3666 once->cb = cb;
2723 once->arg = arg; 3667 once->arg = arg;
… …
2735 ev_timer_set (&once->to, timeout, 0.); 3679 ev_timer_set (&once->to, timeout, 0.);
2736 ev_timer_start (EV_A_ &once->to); 3680 ev_timer_start (EV_A_ &once->to);
2737 } 3681 }
2738} 3682}
2739 3683
3684/*****************************************************************************/
3685
3686#if EV_WALK_ENABLE
3687void
3688ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3689{
3690 int i, j;
3691 ev_watcher_list *wl, *wn;
3692
3693 if (types & (EV_IO | EV_EMBED))
3694 for (i = 0; i < anfdmax; ++i)
3695 for (wl = anfds [i].head; wl; )
3696 {
3697 wn = wl->next;
3698
3699#if EV_EMBED_ENABLE
3700 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3701 {
3702 if (types & EV_EMBED)
3703 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3704 }
3705 else
3706#endif
3707#if EV_USE_INOTIFY
3708 if (ev_cb ((ev_io *)wl) == infy_cb)
3709 ;
3710 else
3711#endif
3712 if ((ev_io *)wl != &pipe_w)
3713 if (types & EV_IO)
3714 cb (EV_A_ EV_IO, wl);
3715
3716 wl = wn;
3717 }
3718
3719 if (types & (EV_TIMER | EV_STAT))
3720 for (i = timercnt + HEAP0; i-- > HEAP0; )
3721#if EV_STAT_ENABLE
3722 /*TODO: timer is not always active*/
3723 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3724 {
3725 if (types & EV_STAT)
3726 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3727 }
3728 else
3729#endif
3730 if (types & EV_TIMER)
3731 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3732
3733#if EV_PERIODIC_ENABLE
3734 if (types & EV_PERIODIC)
3735 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3736 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3737#endif
3738
3739#if EV_IDLE_ENABLE
3740 if (types & EV_IDLE)
3741 for (j = NUMPRI; i--; )
3742 for (i = idlecnt [j]; i--; )
3743 cb (EV_A_ EV_IDLE, idles [j][i]);
3744#endif
3745
3746#if EV_FORK_ENABLE
3747 if (types & EV_FORK)
3748 for (i = forkcnt; i--; )
3749 if (ev_cb (forks [i]) != embed_fork_cb)
3750 cb (EV_A_ EV_FORK, forks [i]);
3751#endif
3752
3753#if EV_ASYNC_ENABLE
3754 if (types & EV_ASYNC)
3755 for (i = asynccnt; i--; )
3756 cb (EV_A_ EV_ASYNC, asyncs [i]);
3757#endif
3758
3759#if EV_PREPARE_ENABLE
3760 if (types & EV_PREPARE)
3761 for (i = preparecnt; i--; )
3762# if EV_EMBED_ENABLE
3763 if (ev_cb (prepares [i]) != embed_prepare_cb)
3764# endif
3765 cb (EV_A_ EV_PREPARE, prepares [i]);
3766#endif
3767
3768#if EV_CHECK_ENABLE
3769 if (types & EV_CHECK)
3770 for (i = checkcnt; i--; )
3771 cb (EV_A_ EV_CHECK, checks [i]);
3772#endif
3773
3774#if EV_SIGNAL_ENABLE
3775 if (types & EV_SIGNAL)
3776 for (i = 0; i < EV_NSIG - 1; ++i)
3777 for (wl = signals [i].head; wl; )
3778 {
3779 wn = wl->next;
3780 cb (EV_A_ EV_SIGNAL, wl);
3781 wl = wn;
3782 }
3783#endif
3784
3785#if EV_CHILD_ENABLE
3786 if (types & EV_CHILD)
3787 for (i = (EV_PID_HASHSIZE); i--; )
3788 for (wl = childs [i]; wl; )
3789 {
3790 wn = wl->next;
3791 cb (EV_A_ EV_CHILD, wl);
3792 wl = wn;
3793 }
3794#endif
3795/* EV_STAT 0x00001000 /* stat data changed */
3796/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3797}
3798#endif
3799
2740#if EV_MULTIPLICITY 3800#if EV_MULTIPLICITY
2741 #include "ev_wrap.h" 3801 #include "ev_wrap.h"
2742#endif 3802#endif
2743 3803
2744#ifdef __cplusplus 3804EV_CPP(})
2745}
2746#endif
2747 3805

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