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Comparing libev/ev.c (file contents):
Revision 1.241 by root, Fri May 9 13:57:00 2008 UTC vs.
Revision 1.361 by root, Sun Oct 24 19:01:01 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
427/* hash table entry per inotify-id */ 689/* hash table entry per inotify-id */
428typedef struct 690typedef struct
… …
431} ANFS; 693} ANFS;
432#endif 694#endif
433 695
434/* Heap Entry */ 696/* Heap Entry */
435#if EV_HEAP_CACHE_AT 697#if EV_HEAP_CACHE_AT
698 /* a heap element */
436 typedef struct { 699 typedef struct {
700 ev_tstamp at;
437 WT w; 701 WT w;
438 ev_tstamp at;
439 } ANHE; 702 } ANHE;
440 703
441 #define ANHE_w(he) (he) /* access watcher, read-write */ 704 #define ANHE_w(he) (he).w /* access watcher, read-write */
442 #define ANHE_at(he) (he)->at /* acces cahced at, read-only */ 705 #define ANHE_at(he) (he).at /* access cached at, read-only */
443 #define ANHE_at_set(he) (he)->at = (he)->w->at /* update at from watcher */ 706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
444#else 707#else
708 /* a heap element */
445 typedef WT ANHE; 709 typedef WT ANHE;
446 710
447 #define ANHE_w(he) (he) 711 #define ANHE_w(he) (he)
448 #define ANHE_at(he) (he)->at 712 #define ANHE_at(he) (he)->at
449 #define ANHE_at_set(he) 713 #define ANHE_at_cache(he)
450#endif 714#endif
451 715
452#if EV_MULTIPLICITY 716#if EV_MULTIPLICITY
453 717
454 struct ev_loop 718 struct ev_loop
… …
473 737
474 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
475 739
476#endif 740#endif
477 741
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
478/*****************************************************************************/ 754/*****************************************************************************/
479 755
756#ifndef EV_HAVE_EV_TIME
480ev_tstamp 757ev_tstamp
481ev_time (void) 758ev_time (void)
482{ 759{
483#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
484 struct timespec ts; 763 struct timespec ts;
485 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
486 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
487#else 766 }
767#endif
768
488 struct timeval tv; 769 struct timeval tv;
489 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
490 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
491#endif
492} 772}
773#endif
493 774
494ev_tstamp inline_size 775inline_size ev_tstamp
495get_clock (void) 776get_clock (void)
496{ 777{
497#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
498 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
499 { 780 {
… …
520 if (delay > 0.) 801 if (delay > 0.)
521 { 802 {
522#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
523 struct timespec ts; 804 struct timespec ts;
524 805
525 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
526 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
527
528 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
529#elif defined(_WIN32) 808#elif defined(_WIN32)
530 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
531#else 810#else
532 struct timeval tv; 811 struct timeval tv;
533 812
534 tv.tv_sec = (time_t)delay; 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
535 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 814 /* something not guaranteed by newer posix versions, but guaranteed */
536 815 /* by older ones */
816 EV_TV_SET (tv, delay);
537 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
538#endif 818#endif
539 } 819 }
540} 820}
541 821
542/*****************************************************************************/ 822/*****************************************************************************/
543 823
544#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 */
545 825
546int 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
547array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
548{ 830{
549 int ncur = cur + 1; 831 int ncur = cur + 1;
550 832
551 do 833 do
… …
568array_realloc (int elem, void *base, int *cur, int cnt) 850array_realloc (int elem, void *base, int *cur, int cnt)
569{ 851{
570 *cur = array_nextsize (elem, *cur, cnt); 852 *cur = array_nextsize (elem, *cur, cnt);
571 return ev_realloc (base, elem * *cur); 853 return ev_realloc (base, elem * *cur);
572} 854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
573 858
574#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
575 if (expect_false ((cnt) > (cur))) \ 860 if (expect_false ((cnt) > (cur))) \
576 { \ 861 { \
577 int ocur_ = (cur); \ 862 int ocur_ = (cur); \
… …
589 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
590 } 875 }
591#endif 876#endif
592 877
593#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
594 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
595 880
596/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
597 888
598void noinline 889void noinline
599ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
600{ 891{
601 W w_ = (W)w; 892 W w_ = (W)w;
… …
610 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
611 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
612 } 903 }
613} 904}
614 905
615void 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
616queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
617{ 923{
618 int i; 924 int i;
619 925
620 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
621 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
622} 928}
623 929
624/*****************************************************************************/ 930/*****************************************************************************/
625 931
626void inline_size 932inline_speed void
627anfds_init (ANFD *base, int count)
628{
629 while (count--)
630 {
631 base->head = 0;
632 base->events = EV_NONE;
633 base->reify = 0;
634
635 ++base;
636 }
637}
638
639void inline_speed
640fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
641{ 934{
642 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
643 ev_io *w; 936 ev_io *w;
644 937
645 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)
… …
649 if (ev) 942 if (ev)
650 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
651 } 944 }
652} 945}
653 946
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
654void 958void
655ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
656{ 960{
657 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
658 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
659} 963}
660 964
661void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
662fd_reify (EV_P) 968fd_reify (EV_P)
663{ 969{
664 int i; 970 int i;
665 971
666 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
667 { 973 {
668 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
669 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
670 ev_io *w; 976 ev_io *w;
671 977
672 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
673 980
674 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
675 events |= (unsigned char)w->events;
676 982
677#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
678 if (events) 984 if (o_reify & EV__IOFDSET)
679 { 985 {
680 unsigned long argp; 986 unsigned long arg;
681 #ifdef EV_FD_TO_WIN32_HANDLE
682 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
683 #else
684 anfd->handle = _get_osfhandle (fd);
685 #endif
686 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
687 } 990 }
688#endif 991#endif
689 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
690 { 994 {
691 unsigned char o_events = anfd->events;
692 unsigned char o_reify = anfd->reify;
693
694 anfd->reify = 0;
695 anfd->events = events; 995 anfd->events = 0;
696 996
697 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)
698 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
699 }
700 } 1006 }
701 1007
702 fdchangecnt = 0; 1008 fdchangecnt = 0;
703} 1009}
704 1010
705void inline_size 1011/* something about the given fd changed */
1012inline_size void
706fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
707{ 1014{
708 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
709 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
710 1017
… …
714 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
715 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
716 } 1023 }
717} 1024}
718 1025
719void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
720fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
721{ 1029{
722 ev_io *w; 1030 ev_io *w;
723 1031
724 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
726 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
727 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);
728 } 1036 }
729} 1037}
730 1038
731int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
732fd_valid (int fd) 1041fd_valid (int fd)
733{ 1042{
734#ifdef _WIN32 1043#ifdef _WIN32
735 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
736#else 1045#else
737 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
738#endif 1047#endif
739} 1048}
740 1049
… …
744{ 1053{
745 int fd; 1054 int fd;
746 1055
747 for (fd = 0; fd < anfdmax; ++fd) 1056 for (fd = 0; fd < anfdmax; ++fd)
748 if (anfds [fd].events) 1057 if (anfds [fd].events)
749 if (!fd_valid (fd) == -1 && errno == EBADF) 1058 if (!fd_valid (fd) && errno == EBADF)
750 fd_kill (EV_A_ fd); 1059 fd_kill (EV_A_ fd);
751} 1060}
752 1061
753/* 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 */
754static void noinline 1063static void noinline
… …
758 1067
759 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
760 if (anfds [fd].events) 1069 if (anfds [fd].events)
761 { 1070 {
762 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
763 return; 1072 break;
764 } 1073 }
765} 1074}
766 1075
767/* 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 */
768static void noinline 1077static void noinline
… …
772 1081
773 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
774 if (anfds [fd].events) 1083 if (anfds [fd].events)
775 { 1084 {
776 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
1086 anfds [fd].emask = 0;
777 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
778 } 1088 }
779} 1089}
780 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
781/*****************************************************************************/ 1105/*****************************************************************************/
782 1106
783/* 1107/*
784 * the heap functions want a real array index. array index 0 uis guaranteed to not 1108 * the heap functions want a real array index. array index 0 is guaranteed to not
785 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
786 * the branching factor of the d-tree. 1110 * the branching factor of the d-tree.
787 */ 1111 */
788 1112
789/* 1113/*
790 * at the moment we allow libev the luxury of two heaps, 1114 * at the moment we allow libev the luxury of two heaps,
791 * 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
792 * which is more cache-efficient. 1116 * which is more cache-efficient.
793 * the difference is about 5% with 50000+ watchers. 1117 * the difference is about 5% with 50000+ watchers.
794 */ 1118 */
795#define EV_USE_4HEAP !EV_MINIMAL
796#if EV_USE_4HEAP 1119#if EV_USE_4HEAP
797 1120
798#define DHEAP 4 1121#define DHEAP 4
799#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
800 1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
801/* towards the root */ 1124#define UPHEAP_DONE(p,k) ((p) == (k))
802void inline_speed
803upheap (ANHE *heap, int k)
804{
805 ANHE he = heap [k];
806
807 for (;;)
808 {
809 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
810
811 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
812 break;
813
814 heap [k] = heap [p];
815 ev_active (ANHE_w (heap [k])) = k;
816 k = p;
817 }
818
819 ev_active (ANHE_w (he)) = k;
820 heap [k] = he;
821}
822 1125
823/* away from the root */ 1126/* away from the root */
824void inline_speed 1127inline_speed void
825downheap (ANHE *heap, int N, int k) 1128downheap (ANHE *heap, int N, int k)
826{ 1129{
827 ANHE he = heap [k]; 1130 ANHE he = heap [k];
828 ANHE *E = heap + N + HEAP0; 1131 ANHE *E = heap + N + HEAP0;
829 1132
830 for (;;) 1133 for (;;)
831 { 1134 {
832 ev_tstamp minat; 1135 ev_tstamp minat;
833 ANHE *minpos; 1136 ANHE *minpos;
834 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1137 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
835 1138
836 // find minimum child 1139 /* find minimum child */
837 if (expect_true (pos + DHEAP - 1 < E)) 1140 if (expect_true (pos + DHEAP - 1 < E))
838 { 1141 {
839 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1142 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
840 if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1143 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
841 if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 1144 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
842 if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 1145 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
843 } 1146 }
844 else if (pos < E) 1147 else if (pos < E)
845 { 1148 {
846 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1149 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1150 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
… …
852 break; 1155 break;
853 1156
854 if (ANHE_at (he) <= minat) 1157 if (ANHE_at (he) <= minat)
855 break; 1158 break;
856 1159
1160 heap [k] = *minpos;
857 ev_active (ANHE_w (*minpos)) = k; 1161 ev_active (ANHE_w (*minpos)) = k;
858 heap [k] = *minpos;
859 1162
860 k = minpos - heap; 1163 k = minpos - heap;
861 } 1164 }
862 1165
1166 heap [k] = he;
863 ev_active (ANHE_w (he)) = k; 1167 ev_active (ANHE_w (he)) = k;
864 heap [k] = he;
865} 1168}
866 1169
867#else // 4HEAP 1170#else /* 4HEAP */
868 1171
869#define HEAP0 1 1172#define HEAP0 1
1173#define HPARENT(k) ((k) >> 1)
1174#define UPHEAP_DONE(p,k) (!(p))
870 1175
871/* towards the root */ 1176/* away from the root */
872void inline_speed 1177inline_speed void
873upheap (ANHE *heap, int k) 1178downheap (ANHE *heap, int N, int k)
874{ 1179{
875 ANHE he = heap [k]; 1180 ANHE he = heap [k];
876 1181
877 for (;;) 1182 for (;;)
878 { 1183 {
879 int p = k >> 1; 1184 int c = k << 1;
880 1185
881 /* maybe we could use a dummy element at heap [0]? */ 1186 if (c >= N + HEAP0)
882 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
883 break; 1187 break;
884 1188
885 heap [k] = heap [p];
886 ev_active (ANHE_w (heap [k])) = k;
887 k = p;
888 }
889
890 heap [k] = w;
891 ev_active (ANHE_w (heap [k])) = k;
892}
893
894/* away from the root */
895void inline_speed
896downheap (ANHE *heap, int N, int k)
897{
898 ANHE he = heap [k];
899
900 for (;;)
901 {
902 int c = k << 1;
903
904 if (c > N)
905 break;
906
907 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
908 ? 1 : 0; 1190 ? 1 : 0;
909 1191
910 if (w->at <= ANHE_at (heap [c])) 1192 if (ANHE_at (he) <= ANHE_at (heap [c]))
911 break; 1193 break;
912 1194
913 heap [k] = heap [c]; 1195 heap [k] = heap [c];
914 ev_active (ANHE_w (heap [k])) = k; 1196 ev_active (ANHE_w (heap [k])) = k;
915 1197
… …
919 heap [k] = he; 1201 heap [k] = he;
920 ev_active (ANHE_w (he)) = k; 1202 ev_active (ANHE_w (he)) = k;
921} 1203}
922#endif 1204#endif
923 1205
924void inline_size 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];
1220 ev_active (ANHE_w (heap [k])) = k;
1221 k = p;
1222 }
1223
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
925adjustheap (ANHE *heap, int N, int k) 1230adjustheap (ANHE *heap, int N, int k)
926{ 1231{
1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
927 upheap (heap, k); 1233 upheap (heap, k);
1234 else
928 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);
929} 1248}
930 1249
931/*****************************************************************************/ 1250/*****************************************************************************/
932 1251
1252/* associate signal watchers to a signal signal */
933typedef struct 1253typedef struct
934{ 1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
935 WL head; 1259 WL head;
936 EV_ATOMIC_T gotsig;
937} ANSIG; 1260} ANSIG;
938 1261
939static ANSIG *signals; 1262static ANSIG signals [EV_NSIG - 1];
940static int signalmax;
941
942static EV_ATOMIC_T gotsig;
943
944void inline_size
945signals_init (ANSIG *base, int count)
946{
947 while (count--)
948 {
949 base->head = 0;
950 base->gotsig = 0;
951
952 ++base;
953 }
954}
955 1263
956/*****************************************************************************/ 1264/*****************************************************************************/
957 1265
958void inline_speed 1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
959fd_intern (int fd)
960{
961#ifdef _WIN32
962 int arg = 1;
963 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
964#else
965 fcntl (fd, F_SETFD, FD_CLOEXEC);
966 fcntl (fd, F_SETFL, O_NONBLOCK);
967#endif
968}
969 1267
970static void noinline 1268static void noinline
971evpipe_init (EV_P) 1269evpipe_init (EV_P)
972{ 1270{
973 if (!ev_is_active (&pipeev)) 1271 if (!ev_is_active (&pipe_w))
974 { 1272 {
975#if EV_USE_EVENTFD 1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
976 if ((evfd = eventfd (0, 0)) >= 0) 1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
977 { 1279 {
978 evpipe [0] = -1; 1280 evpipe [0] = -1;
979 fd_intern (evfd); 1281 fd_intern (evfd); /* doing it twice doesn't hurt */
980 ev_io_set (&pipeev, evfd, EV_READ); 1282 ev_io_set (&pipe_w, evfd, EV_READ);
981 } 1283 }
982 else 1284 else
983#endif 1285# endif
984 { 1286 {
985 while (pipe (evpipe)) 1287 while (pipe (evpipe))
986 syserr ("(libev) error creating signal/async pipe"); 1288 ev_syserr ("(libev) error creating signal/async pipe");
987 1289
988 fd_intern (evpipe [0]); 1290 fd_intern (evpipe [0]);
989 fd_intern (evpipe [1]); 1291 fd_intern (evpipe [1]);
990 ev_io_set (&pipeev, evpipe [0], EV_READ); 1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
991 } 1293 }
992 1294
993 ev_io_start (EV_A_ &pipeev); 1295 ev_io_start (EV_A_ &pipe_w);
994 ev_unref (EV_A); /* watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
995 } 1297 }
996} 1298}
997 1299
998void inline_size 1300inline_size void
999evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1000{ 1302{
1001 if (!*flag) 1303 if (!*flag)
1002 { 1304 {
1003 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;
1004 1307
1005 *flag = 1; 1308 *flag = 1;
1006 1309
1007#if EV_USE_EVENTFD 1310#if EV_USE_EVENTFD
1008 if (evfd >= 0) 1311 if (evfd >= 0)
… …
1010 uint64_t counter = 1; 1313 uint64_t counter = 1;
1011 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
1012 } 1315 }
1013 else 1316 else
1014#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. */
1015 write (evpipe [1], &old_errno, 1); 1323 write (evpipe [1], &dummy, 1);
1016 1324
1017 errno = old_errno; 1325 errno = old_errno;
1018 } 1326 }
1019} 1327}
1020 1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
1021static void 1331static void
1022pipecb (EV_P_ ev_io *iow, int revents) 1332pipecb (EV_P_ ev_io *iow, int revents)
1023{ 1333{
1334 int i;
1335
1024#if EV_USE_EVENTFD 1336#if EV_USE_EVENTFD
1025 if (evfd >= 0) 1337 if (evfd >= 0)
1026 { 1338 {
1027 uint64_t counter; 1339 uint64_t counter;
1028 read (evfd, &counter, sizeof (uint64_t)); 1340 read (evfd, &counter, sizeof (uint64_t));
1029 } 1341 }
1030 else 1342 else
1031#endif 1343#endif
1032 { 1344 {
1033 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1034 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
1035 } 1348 }
1036 1349
1037 if (gotsig && ev_is_default_loop (EV_A)) 1350 if (sig_pending)
1038 { 1351 {
1039 int signum; 1352 sig_pending = 0;
1040 gotsig = 0;
1041 1353
1042 for (signum = signalmax; signum--; ) 1354 for (i = EV_NSIG - 1; i--; )
1043 if (signals [signum].gotsig) 1355 if (expect_false (signals [i].pending))
1044 ev_feed_signal_event (EV_A_ signum + 1); 1356 ev_feed_signal_event (EV_A_ i + 1);
1045 } 1357 }
1046 1358
1047#if EV_ASYNC_ENABLE 1359#if EV_ASYNC_ENABLE
1048 if (gotasync) 1360 if (async_pending)
1049 { 1361 {
1050 int i; 1362 async_pending = 0;
1051 gotasync = 0;
1052 1363
1053 for (i = asynccnt; i--; ) 1364 for (i = asynccnt; i--; )
1054 if (asyncs [i]->sent) 1365 if (asyncs [i]->sent)
1055 { 1366 {
1056 asyncs [i]->sent = 0; 1367 asyncs [i]->sent = 0;
… …
1064 1375
1065static void 1376static void
1066ev_sighandler (int signum) 1377ev_sighandler (int signum)
1067{ 1378{
1068#if EV_MULTIPLICITY 1379#if EV_MULTIPLICITY
1069 struct ev_loop *loop = &default_loop_struct; 1380 EV_P = signals [signum - 1].loop;
1070#endif 1381#endif
1071 1382
1072#if _WIN32 1383#ifdef _WIN32
1073 signal (signum, ev_sighandler); 1384 signal (signum, ev_sighandler);
1074#endif 1385#endif
1075 1386
1076 signals [signum - 1].gotsig = 1; 1387 signals [signum - 1].pending = 1;
1077 evpipe_write (EV_A_ &gotsig); 1388 evpipe_write (EV_A_ &sig_pending);
1078} 1389}
1079 1390
1080void noinline 1391void noinline
1081ev_feed_signal_event (EV_P_ int signum) 1392ev_feed_signal_event (EV_P_ int signum)
1082{ 1393{
1083 WL w; 1394 WL w;
1084 1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1085#if EV_MULTIPLICITY 1401#if EV_MULTIPLICITY
1086 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 */
1087#endif 1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1088 1404
1089 --signum; 1405 if (expect_false (signals [signum].loop != EV_A))
1090
1091 if (signum < 0 || signum >= signalmax)
1092 return; 1406 return;
1407#endif
1093 1408
1094 signals [signum].gotsig = 0; 1409 signals [signum].pending = 0;
1095 1410
1096 for (w = signals [signum].head; w; w = w->next) 1411 for (w = signals [signum].head; w; w = w->next)
1097 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1098} 1413}
1099 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
1100/*****************************************************************************/ 1437/*****************************************************************************/
1101 1438
1439#if EV_CHILD_ENABLE
1102static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
1103
1104#ifndef _WIN32
1105 1441
1106static ev_signal childev; 1442static ev_signal childev;
1107 1443
1108#ifndef WIFCONTINUED 1444#ifndef WIFCONTINUED
1109# define WIFCONTINUED(status) 0 1445# define WIFCONTINUED(status) 0
1110#endif 1446#endif
1111 1447
1112void inline_speed 1448/* handle a single child status event */
1449inline_speed void
1113child_reap (EV_P_ int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
1114{ 1451{
1115 ev_child *w; 1452 ev_child *w;
1116 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1117 1454
1118 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)
1119 { 1456 {
1120 if ((w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1121 && (!traced || (w->flags & 1))) 1458 && (!traced || (w->flags & 1)))
1122 { 1459 {
1123 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 */
… …
1130 1467
1131#ifndef WCONTINUED 1468#ifndef WCONTINUED
1132# define WCONTINUED 0 1469# define WCONTINUED 0
1133#endif 1470#endif
1134 1471
1472/* called on sigchld etc., calls waitpid */
1135static void 1473static void
1136childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
1137{ 1475{
1138 int pid, status; 1476 int pid, status;
1139 1477
… …
1147 /* 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 */
1148 /* 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 */
1149 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1150 1488
1151 child_reap (EV_A_ pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1152 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
1153 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 */
1154} 1492}
1155 1493
1156#endif 1494#endif
1157 1495
1158/*****************************************************************************/ 1496/*****************************************************************************/
1159 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1160#if EV_USE_PORT 1501#if EV_USE_PORT
1161# include "ev_port.c" 1502# include "ev_port.c"
1162#endif 1503#endif
1163#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1164# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
1220 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
1221 /* 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 */
1222 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
1223#endif 1564#endif
1224#ifdef __APPLE__ 1565#ifdef __APPLE__
1225 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
1226 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) */
1227#endif 1572#endif
1228 1573
1229 return flags; 1574 return flags;
1230} 1575}
1231 1576
… …
1233ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1234{ 1579{
1235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1236 1581
1237 /* 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 */
1238 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1239 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1240 1585
1241 return flags; 1586 return flags;
1242} 1587}
1243 1588
1244unsigned int 1589unsigned int
1245ev_backend (EV_P) 1590ev_backend (EV_P)
1246{ 1591{
1247 return backend; 1592 return backend;
1248} 1593}
1249 1594
1595#if EV_FEATURE_API
1250unsigned int 1596unsigned int
1251ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1252{ 1598{
1253 return loop_count; 1599 return loop_count;
1254} 1600}
1255 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
1256void 1608void
1257ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1258{ 1610{
1259 io_blocktime = interval; 1611 io_blocktime = interval;
1260} 1612}
… …
1263ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1264{ 1616{
1265 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1266} 1618}
1267 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 */
1268static void noinline 1645static void noinline
1269loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1270{ 1647{
1271 if (!backend) 1648 if (!backend)
1272 { 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
1273#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1274 { 1662 {
1275 struct timespec ts; 1663 struct timespec ts;
1664
1276 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1277 have_monotonic = 1; 1666 have_monotonic = 1;
1278 } 1667 }
1279#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"));
1280 1680
1281 ev_rt_now = ev_time (); 1681 ev_rt_now = ev_time ();
1282 mn_now = get_clock (); 1682 mn_now = get_clock ();
1283 now_floor = mn_now; 1683 now_floor = mn_now;
1284 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
1285 1688
1286 io_blocktime = 0.; 1689 io_blocktime = 0.;
1287 timeout_blocktime = 0.; 1690 timeout_blocktime = 0.;
1288 backend = 0; 1691 backend = 0;
1289 backend_fd = -1; 1692 backend_fd = -1;
1290 gotasync = 0; 1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1291#if EV_USE_INOTIFY 1697#if EV_USE_INOTIFY
1292 fs_fd = -2; 1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1293#endif 1699#endif
1294 1700#if EV_USE_SIGNALFD
1295 /* pid check not overridable via env */ 1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1296#ifndef _WIN32
1297 if (flags & EVFLAG_FORKCHECK)
1298 curpid = getpid ();
1299#endif 1702#endif
1300
1301 if (!(flags & EVFLAG_NOENV)
1302 && !enable_secure ()
1303 && getenv ("LIBEV_FLAGS"))
1304 flags = atoi (getenv ("LIBEV_FLAGS"));
1305 1703
1306 if (!(flags & 0x0000ffffU)) 1704 if (!(flags & 0x0000ffffU))
1307 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1308 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1309#if EV_USE_PORT 1710#if EV_USE_PORT
1310 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1311#endif 1712#endif
1312#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1313 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1320#endif 1721#endif
1321#if EV_USE_SELECT 1722#if EV_USE_SELECT
1322 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1323#endif 1724#endif
1324 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1325 ev_init (&pipeev, pipecb); 1729 ev_init (&pipe_w, pipecb);
1326 ev_set_priority (&pipeev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1327 } 1732 }
1328} 1733}
1329 1734
1330static void noinline 1735/* free up a loop structure */
1736void
1331loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
1332{ 1738{
1333 int i; 1739 int i;
1334 1740
1741#if EV_CLEANUP_ENABLE
1742 /* queue cleanup watchers (and execute them) */
1743 if (expect_false (cleanupcnt))
1744 {
1745 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1746 EV_INVOKE_PENDING;
1747 }
1748#endif
1749
1750#if EV_CHILD_ENABLE
1751 if (ev_is_active (&childev))
1752 {
1753 ev_ref (EV_A); /* child watcher */
1754 ev_signal_stop (EV_A_ &childev);
1755 }
1756#endif
1757
1335 if (ev_is_active (&pipeev)) 1758 if (ev_is_active (&pipe_w))
1336 { 1759 {
1337 ev_ref (EV_A); /* signal watcher */ 1760 /*ev_ref (EV_A);*/
1338 ev_io_stop (EV_A_ &pipeev); 1761 /*ev_io_stop (EV_A_ &pipe_w);*/
1339 1762
1340#if EV_USE_EVENTFD 1763#if EV_USE_EVENTFD
1341 if (evfd >= 0) 1764 if (evfd >= 0)
1342 close (evfd); 1765 close (evfd);
1343#endif 1766#endif
1344 1767
1345 if (evpipe [0] >= 0) 1768 if (evpipe [0] >= 0)
1346 { 1769 {
1347 close (evpipe [0]); 1770 EV_WIN32_CLOSE_FD (evpipe [0]);
1348 close (evpipe [1]); 1771 EV_WIN32_CLOSE_FD (evpipe [1]);
1349 } 1772 }
1350 } 1773 }
1774
1775#if EV_USE_SIGNALFD
1776 if (ev_is_active (&sigfd_w))
1777 close (sigfd);
1778#endif
1351 1779
1352#if EV_USE_INOTIFY 1780#if EV_USE_INOTIFY
1353 if (fs_fd >= 0) 1781 if (fs_fd >= 0)
1354 close (fs_fd); 1782 close (fs_fd);
1355#endif 1783#endif
1356 1784
1357 if (backend_fd >= 0) 1785 if (backend_fd >= 0)
1358 close (backend_fd); 1786 close (backend_fd);
1359 1787
1788#if EV_USE_IOCP
1789 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1790#endif
1360#if EV_USE_PORT 1791#if EV_USE_PORT
1361 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1792 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1362#endif 1793#endif
1363#if EV_USE_KQUEUE 1794#if EV_USE_KQUEUE
1364 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1795 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1379#if EV_IDLE_ENABLE 1810#if EV_IDLE_ENABLE
1380 array_free (idle, [i]); 1811 array_free (idle, [i]);
1381#endif 1812#endif
1382 } 1813 }
1383 1814
1384 ev_free (anfds); anfdmax = 0; 1815 ev_free (anfds); anfds = 0; anfdmax = 0;
1385 1816
1386 /* have to use the microsoft-never-gets-it-right macro */ 1817 /* have to use the microsoft-never-gets-it-right macro */
1818 array_free (rfeed, EMPTY);
1387 array_free (fdchange, EMPTY); 1819 array_free (fdchange, EMPTY);
1388 array_free (timer, EMPTY); 1820 array_free (timer, EMPTY);
1389#if EV_PERIODIC_ENABLE 1821#if EV_PERIODIC_ENABLE
1390 array_free (periodic, EMPTY); 1822 array_free (periodic, EMPTY);
1391#endif 1823#endif
1392#if EV_FORK_ENABLE 1824#if EV_FORK_ENABLE
1393 array_free (fork, EMPTY); 1825 array_free (fork, EMPTY);
1394#endif 1826#endif
1827#if EV_CLEANUP_ENABLE
1828 array_free (cleanup, EMPTY);
1829#endif
1395 array_free (prepare, EMPTY); 1830 array_free (prepare, EMPTY);
1396 array_free (check, EMPTY); 1831 array_free (check, EMPTY);
1397#if EV_ASYNC_ENABLE 1832#if EV_ASYNC_ENABLE
1398 array_free (async, EMPTY); 1833 array_free (async, EMPTY);
1399#endif 1834#endif
1400 1835
1401 backend = 0; 1836 backend = 0;
1837
1838#if EV_MULTIPLICITY
1839 if (ev_is_default_loop (EV_A))
1840#endif
1841 ev_default_loop_ptr = 0;
1842#if EV_MULTIPLICITY
1843 else
1844 ev_free (EV_A);
1845#endif
1402} 1846}
1403 1847
1404#if EV_USE_INOTIFY 1848#if EV_USE_INOTIFY
1405void inline_size infy_fork (EV_P); 1849inline_size void infy_fork (EV_P);
1406#endif 1850#endif
1407 1851
1408void inline_size 1852inline_size void
1409loop_fork (EV_P) 1853loop_fork (EV_P)
1410{ 1854{
1411#if EV_USE_PORT 1855#if EV_USE_PORT
1412 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1856 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1413#endif 1857#endif
… …
1419#endif 1863#endif
1420#if EV_USE_INOTIFY 1864#if EV_USE_INOTIFY
1421 infy_fork (EV_A); 1865 infy_fork (EV_A);
1422#endif 1866#endif
1423 1867
1424 if (ev_is_active (&pipeev)) 1868 if (ev_is_active (&pipe_w))
1425 { 1869 {
1426 /* this "locks" the handlers against writing to the pipe */ 1870 /* this "locks" the handlers against writing to the pipe */
1427 /* while we modify the fd vars */ 1871 /* while we modify the fd vars */
1428 gotsig = 1; 1872 sig_pending = 1;
1429#if EV_ASYNC_ENABLE 1873#if EV_ASYNC_ENABLE
1430 gotasync = 1; 1874 async_pending = 1;
1431#endif 1875#endif
1432 1876
1433 ev_ref (EV_A); 1877 ev_ref (EV_A);
1434 ev_io_stop (EV_A_ &pipeev); 1878 ev_io_stop (EV_A_ &pipe_w);
1435 1879
1436#if EV_USE_EVENTFD 1880#if EV_USE_EVENTFD
1437 if (evfd >= 0) 1881 if (evfd >= 0)
1438 close (evfd); 1882 close (evfd);
1439#endif 1883#endif
1440 1884
1441 if (evpipe [0] >= 0) 1885 if (evpipe [0] >= 0)
1442 { 1886 {
1443 close (evpipe [0]); 1887 EV_WIN32_CLOSE_FD (evpipe [0]);
1444 close (evpipe [1]); 1888 EV_WIN32_CLOSE_FD (evpipe [1]);
1445 } 1889 }
1446 1890
1891#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 evpipe_init (EV_A); 1892 evpipe_init (EV_A);
1448 /* now iterate over everything, in case we missed something */ 1893 /* now iterate over everything, in case we missed something */
1449 pipecb (EV_A_ &pipeev, EV_READ); 1894 pipecb (EV_A_ &pipe_w, EV_READ);
1895#endif
1450 } 1896 }
1451 1897
1452 postfork = 0; 1898 postfork = 0;
1453} 1899}
1900
1901#if EV_MULTIPLICITY
1902
1903struct ev_loop *
1904ev_loop_new (unsigned int flags)
1905{
1906 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1907
1908 memset (EV_A, 0, sizeof (struct ev_loop));
1909 loop_init (EV_A_ flags);
1910
1911 if (ev_backend (EV_A))
1912 return EV_A;
1913
1914 ev_free (EV_A);
1915 return 0;
1916}
1917
1918#endif /* multiplicity */
1919
1920#if EV_VERIFY
1921static void noinline
1922verify_watcher (EV_P_ W w)
1923{
1924 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1925
1926 if (w->pending)
1927 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1928}
1929
1930static void noinline
1931verify_heap (EV_P_ ANHE *heap, int N)
1932{
1933 int i;
1934
1935 for (i = HEAP0; i < N + HEAP0; ++i)
1936 {
1937 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1938 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1939 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1940
1941 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1942 }
1943}
1944
1945static void noinline
1946array_verify (EV_P_ W *ws, int cnt)
1947{
1948 while (cnt--)
1949 {
1950 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1951 verify_watcher (EV_A_ ws [cnt]);
1952 }
1953}
1954#endif
1955
1956#if EV_FEATURE_API
1957void
1958ev_verify (EV_P)
1959{
1960#if EV_VERIFY
1961 int i;
1962 WL w;
1963
1964 assert (activecnt >= -1);
1965
1966 assert (fdchangemax >= fdchangecnt);
1967 for (i = 0; i < fdchangecnt; ++i)
1968 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1969
1970 assert (anfdmax >= 0);
1971 for (i = 0; i < anfdmax; ++i)
1972 for (w = anfds [i].head; w; w = w->next)
1973 {
1974 verify_watcher (EV_A_ (W)w);
1975 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1976 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1977 }
1978
1979 assert (timermax >= timercnt);
1980 verify_heap (EV_A_ timers, timercnt);
1981
1982#if EV_PERIODIC_ENABLE
1983 assert (periodicmax >= periodiccnt);
1984 verify_heap (EV_A_ periodics, periodiccnt);
1985#endif
1986
1987 for (i = NUMPRI; i--; )
1988 {
1989 assert (pendingmax [i] >= pendingcnt [i]);
1990#if EV_IDLE_ENABLE
1991 assert (idleall >= 0);
1992 assert (idlemax [i] >= idlecnt [i]);
1993 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1994#endif
1995 }
1996
1997#if EV_FORK_ENABLE
1998 assert (forkmax >= forkcnt);
1999 array_verify (EV_A_ (W *)forks, forkcnt);
2000#endif
2001
2002#if EV_CLEANUP_ENABLE
2003 assert (cleanupmax >= cleanupcnt);
2004 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2005#endif
2006
2007#if EV_ASYNC_ENABLE
2008 assert (asyncmax >= asynccnt);
2009 array_verify (EV_A_ (W *)asyncs, asynccnt);
2010#endif
2011
2012#if EV_PREPARE_ENABLE
2013 assert (preparemax >= preparecnt);
2014 array_verify (EV_A_ (W *)prepares, preparecnt);
2015#endif
2016
2017#if EV_CHECK_ENABLE
2018 assert (checkmax >= checkcnt);
2019 array_verify (EV_A_ (W *)checks, checkcnt);
2020#endif
2021
2022# if 0
2023#if EV_CHILD_ENABLE
2024 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2025 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2026#endif
2027# endif
2028#endif
2029}
2030#endif
1454 2031
1455#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
1456struct ev_loop * 2033struct ev_loop *
1457ev_loop_new (unsigned int flags)
1458{
1459 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1460
1461 memset (loop, 0, sizeof (struct ev_loop));
1462
1463 loop_init (EV_A_ flags);
1464
1465 if (ev_backend (EV_A))
1466 return loop;
1467
1468 return 0;
1469}
1470
1471void
1472ev_loop_destroy (EV_P)
1473{
1474 loop_destroy (EV_A);
1475 ev_free (loop);
1476}
1477
1478void
1479ev_loop_fork (EV_P)
1480{
1481 postfork = 1; /* must be in line with ev_default_fork */
1482}
1483#endif
1484
1485#if EV_MULTIPLICITY
1486struct ev_loop *
1487ev_default_loop_init (unsigned int flags)
1488#else 2034#else
1489int 2035int
2036#endif
1490ev_default_loop (unsigned int flags) 2037ev_default_loop (unsigned int flags)
1491#endif
1492{ 2038{
1493 if (!ev_default_loop_ptr) 2039 if (!ev_default_loop_ptr)
1494 { 2040 {
1495#if EV_MULTIPLICITY 2041#if EV_MULTIPLICITY
1496 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2042 EV_P = ev_default_loop_ptr = &default_loop_struct;
1497#else 2043#else
1498 ev_default_loop_ptr = 1; 2044 ev_default_loop_ptr = 1;
1499#endif 2045#endif
1500 2046
1501 loop_init (EV_A_ flags); 2047 loop_init (EV_A_ flags);
1502 2048
1503 if (ev_backend (EV_A)) 2049 if (ev_backend (EV_A))
1504 { 2050 {
1505#ifndef _WIN32 2051#if EV_CHILD_ENABLE
1506 ev_signal_init (&childev, childcb, SIGCHLD); 2052 ev_signal_init (&childev, childcb, SIGCHLD);
1507 ev_set_priority (&childev, EV_MAXPRI); 2053 ev_set_priority (&childev, EV_MAXPRI);
1508 ev_signal_start (EV_A_ &childev); 2054 ev_signal_start (EV_A_ &childev);
1509 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2055 ev_unref (EV_A); /* child watcher should not keep loop alive */
1510#endif 2056#endif
… …
1515 2061
1516 return ev_default_loop_ptr; 2062 return ev_default_loop_ptr;
1517} 2063}
1518 2064
1519void 2065void
1520ev_default_destroy (void) 2066ev_loop_fork (EV_P)
1521{ 2067{
1522#if EV_MULTIPLICITY
1523 struct ev_loop *loop = ev_default_loop_ptr;
1524#endif
1525
1526#ifndef _WIN32
1527 ev_ref (EV_A); /* child watcher */
1528 ev_signal_stop (EV_A_ &childev);
1529#endif
1530
1531 loop_destroy (EV_A);
1532}
1533
1534void
1535ev_default_fork (void)
1536{
1537#if EV_MULTIPLICITY
1538 struct ev_loop *loop = ev_default_loop_ptr;
1539#endif
1540
1541 if (backend)
1542 postfork = 1; /* must be in line with ev_loop_fork */ 2068 postfork = 1; /* must be in line with ev_default_fork */
1543} 2069}
1544 2070
1545/*****************************************************************************/ 2071/*****************************************************************************/
1546 2072
1547void 2073void
1548ev_invoke (EV_P_ void *w, int revents) 2074ev_invoke (EV_P_ void *w, int revents)
1549{ 2075{
1550 EV_CB_INVOKE ((W)w, revents); 2076 EV_CB_INVOKE ((W)w, revents);
1551} 2077}
1552 2078
1553void inline_speed 2079unsigned int
1554call_pending (EV_P) 2080ev_pending_count (EV_P)
2081{
2082 int pri;
2083 unsigned int count = 0;
2084
2085 for (pri = NUMPRI; pri--; )
2086 count += pendingcnt [pri];
2087
2088 return count;
2089}
2090
2091void noinline
2092ev_invoke_pending (EV_P)
1555{ 2093{
1556 int pri; 2094 int pri;
1557 2095
1558 for (pri = NUMPRI; pri--; ) 2096 for (pri = NUMPRI; pri--; )
1559 while (pendingcnt [pri]) 2097 while (pendingcnt [pri])
1560 { 2098 {
1561 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2099 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1562 2100
1563 if (expect_true (p->w))
1564 {
1565 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2101 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2102 /* ^ this is no longer true, as pending_w could be here */
1566 2103
1567 p->w->pending = 0; 2104 p->w->pending = 0;
1568 EV_CB_INVOKE (p->w, p->events); 2105 EV_CB_INVOKE (p->w, p->events);
1569 } 2106 EV_FREQUENT_CHECK;
1570 } 2107 }
1571} 2108}
1572 2109
1573#if EV_IDLE_ENABLE 2110#if EV_IDLE_ENABLE
1574void inline_size 2111/* make idle watchers pending. this handles the "call-idle */
2112/* only when higher priorities are idle" logic */
2113inline_size void
1575idle_reify (EV_P) 2114idle_reify (EV_P)
1576{ 2115{
1577 if (expect_false (idleall)) 2116 if (expect_false (idleall))
1578 { 2117 {
1579 int pri; 2118 int pri;
… …
1591 } 2130 }
1592 } 2131 }
1593} 2132}
1594#endif 2133#endif
1595 2134
1596void inline_size 2135/* make timers pending */
2136inline_size void
1597timers_reify (EV_P) 2137timers_reify (EV_P)
1598{ 2138{
2139 EV_FREQUENT_CHECK;
2140
1599 while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now) 2141 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1600 { 2142 {
1601 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2143 do
1602
1603 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1604
1605 /* first reschedule or stop timer */
1606 if (w->repeat)
1607 { 2144 {
2145 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2146
2147 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2148
2149 /* first reschedule or stop timer */
2150 if (w->repeat)
2151 {
2152 ev_at (w) += w->repeat;
2153 if (ev_at (w) < mn_now)
2154 ev_at (w) = mn_now;
2155
1608 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2156 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1609 2157
1610 ev_at (w) += w->repeat; 2158 ANHE_at_cache (timers [HEAP0]);
1611 if (ev_at (w) < mn_now)
1612 ev_at (w) = mn_now;
1613
1614 downheap (timers, timercnt, HEAP0); 2159 downheap (timers, timercnt, HEAP0);
2160 }
2161 else
2162 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2163
2164 EV_FREQUENT_CHECK;
2165 feed_reverse (EV_A_ (W)w);
1615 } 2166 }
1616 else 2167 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1617 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1618 2168
1619 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2169 feed_reverse_done (EV_A_ EV_TIMER);
1620 } 2170 }
1621} 2171}
1622 2172
1623#if EV_PERIODIC_ENABLE 2173#if EV_PERIODIC_ENABLE
1624void inline_size 2174/* make periodics pending */
2175inline_size void
1625periodics_reify (EV_P) 2176periodics_reify (EV_P)
1626{ 2177{
2178 EV_FREQUENT_CHECK;
2179
1627 while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now) 2180 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1628 { 2181 {
1629 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2182 int feed_count = 0;
1630 2183
1631 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2184 do
1632
1633 /* first reschedule or stop timer */
1634 if (w->reschedule_cb)
1635 { 2185 {
2186 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2187
2188 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2189
2190 /* first reschedule or stop timer */
2191 if (w->reschedule_cb)
2192 {
1636 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 2193 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2194
1637 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); 2195 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2196
2197 ANHE_at_cache (periodics [HEAP0]);
1638 downheap (periodics, periodiccnt, 1); 2198 downheap (periodics, periodiccnt, HEAP0);
2199 }
2200 else if (w->interval)
2201 {
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2203 /* if next trigger time is not sufficiently in the future, put it there */
2204 /* this might happen because of floating point inexactness */
2205 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2206 {
2207 ev_at (w) += w->interval;
2208
2209 /* if interval is unreasonably low we might still have a time in the past */
2210 /* so correct this. this will make the periodic very inexact, but the user */
2211 /* has effectively asked to get triggered more often than possible */
2212 if (ev_at (w) < ev_rt_now)
2213 ev_at (w) = ev_rt_now;
2214 }
2215
2216 ANHE_at_cache (periodics [HEAP0]);
2217 downheap (periodics, periodiccnt, HEAP0);
2218 }
2219 else
2220 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2221
2222 EV_FREQUENT_CHECK;
2223 feed_reverse (EV_A_ (W)w);
1639 } 2224 }
1640 else if (w->interval) 2225 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1641 {
1642 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1643 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1644 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1645 downheap (periodics, periodiccnt, HEAP0);
1646 }
1647 else
1648 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1649 2226
1650 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2227 feed_reverse_done (EV_A_ EV_PERIODIC);
1651 } 2228 }
1652} 2229}
1653 2230
2231/* simply recalculate all periodics */
2232/* TODO: maybe ensure that at least one event happens when jumping forward? */
1654static void noinline 2233static void noinline
1655periodics_reschedule (EV_P) 2234periodics_reschedule (EV_P)
1656{ 2235{
1657 int i; 2236 int i;
1658 2237
… …
1663 2242
1664 if (w->reschedule_cb) 2243 if (w->reschedule_cb)
1665 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2244 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1666 else if (w->interval) 2245 else if (w->interval)
1667 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2246 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2247
2248 ANHE_at_cache (periodics [i]);
2249 }
2250
2251 reheap (periodics, periodiccnt);
2252}
2253#endif
2254
2255/* adjust all timers by a given offset */
2256static void noinline
2257timers_reschedule (EV_P_ ev_tstamp adjust)
2258{
2259 int i;
2260
2261 for (i = 0; i < timercnt; ++i)
1668 } 2262 {
1669 2263 ANHE *he = timers + i + HEAP0;
1670 /* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */ 2264 ANHE_w (*he)->at += adjust;
1671 for (i = periodiccnt >> 1; --i; ) 2265 ANHE_at_cache (*he);
1672 downheap (periodics, periodiccnt, i + HEAP0); 2266 }
1673} 2267}
1674#endif
1675 2268
1676void inline_speed 2269/* fetch new monotonic and realtime times from the kernel */
2270/* also detect if there was a timejump, and act accordingly */
2271inline_speed void
1677time_update (EV_P_ ev_tstamp max_block) 2272time_update (EV_P_ ev_tstamp max_block)
1678{ 2273{
1679 int i;
1680
1681#if EV_USE_MONOTONIC 2274#if EV_USE_MONOTONIC
1682 if (expect_true (have_monotonic)) 2275 if (expect_true (have_monotonic))
1683 { 2276 {
2277 int i;
1684 ev_tstamp odiff = rtmn_diff; 2278 ev_tstamp odiff = rtmn_diff;
1685 2279
1686 mn_now = get_clock (); 2280 mn_now = get_clock ();
1687 2281
1688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2282 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1714 ev_rt_now = ev_time (); 2308 ev_rt_now = ev_time ();
1715 mn_now = get_clock (); 2309 mn_now = get_clock ();
1716 now_floor = mn_now; 2310 now_floor = mn_now;
1717 } 2311 }
1718 2312
2313 /* no timer adjustment, as the monotonic clock doesn't jump */
2314 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1719# if EV_PERIODIC_ENABLE 2315# if EV_PERIODIC_ENABLE
1720 periodics_reschedule (EV_A); 2316 periodics_reschedule (EV_A);
1721# endif 2317# endif
1722 /* no timer adjustment, as the monotonic clock doesn't jump */
1723 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1724 } 2318 }
1725 else 2319 else
1726#endif 2320#endif
1727 { 2321 {
1728 ev_rt_now = ev_time (); 2322 ev_rt_now = ev_time ();
1729 2323
1730 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2324 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1731 { 2325 {
2326 /* adjust timers. this is easy, as the offset is the same for all of them */
2327 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1732#if EV_PERIODIC_ENABLE 2328#if EV_PERIODIC_ENABLE
1733 periodics_reschedule (EV_A); 2329 periodics_reschedule (EV_A);
1734#endif 2330#endif
1735 /* adjust timers. this is easy, as the offset is the same for all of them */
1736 for (i = 0; i < timercnt; ++i)
1737 {
1738 ANHE *he = timers + i + HEAP0;
1739 ANHE_w (*he)->at += ev_rt_now - mn_now;
1740 ANHE_at_set (*he);
1741 }
1742 } 2331 }
1743 2332
1744 mn_now = ev_rt_now; 2333 mn_now = ev_rt_now;
1745 } 2334 }
1746} 2335}
1747 2336
1748void 2337void
1749ev_ref (EV_P)
1750{
1751 ++activecnt;
1752}
1753
1754void
1755ev_unref (EV_P)
1756{
1757 --activecnt;
1758}
1759
1760static int loop_done;
1761
1762void
1763ev_loop (EV_P_ int flags) 2338ev_run (EV_P_ int flags)
1764{ 2339{
2340#if EV_FEATURE_API
2341 ++loop_depth;
2342#endif
2343
2344 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2345
1765 loop_done = EVUNLOOP_CANCEL; 2346 loop_done = EVBREAK_CANCEL;
1766 2347
1767 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2348 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1768 2349
1769 do 2350 do
1770 { 2351 {
2352#if EV_VERIFY >= 2
2353 ev_verify (EV_A);
2354#endif
2355
1771#ifndef _WIN32 2356#ifndef _WIN32
1772 if (expect_false (curpid)) /* penalise the forking check even more */ 2357 if (expect_false (curpid)) /* penalise the forking check even more */
1773 if (expect_false (getpid () != curpid)) 2358 if (expect_false (getpid () != curpid))
1774 { 2359 {
1775 curpid = getpid (); 2360 curpid = getpid ();
… …
1781 /* we might have forked, so queue fork handlers */ 2366 /* we might have forked, so queue fork handlers */
1782 if (expect_false (postfork)) 2367 if (expect_false (postfork))
1783 if (forkcnt) 2368 if (forkcnt)
1784 { 2369 {
1785 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2370 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1786 call_pending (EV_A); 2371 EV_INVOKE_PENDING;
1787 } 2372 }
1788#endif 2373#endif
1789 2374
2375#if EV_PREPARE_ENABLE
1790 /* queue prepare watchers (and execute them) */ 2376 /* queue prepare watchers (and execute them) */
1791 if (expect_false (preparecnt)) 2377 if (expect_false (preparecnt))
1792 { 2378 {
1793 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2379 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1794 call_pending (EV_A); 2380 EV_INVOKE_PENDING;
1795 } 2381 }
2382#endif
1796 2383
1797 if (expect_false (!activecnt)) 2384 if (expect_false (loop_done))
1798 break; 2385 break;
1799 2386
1800 /* we might have forked, so reify kernel state if necessary */ 2387 /* we might have forked, so reify kernel state if necessary */
1801 if (expect_false (postfork)) 2388 if (expect_false (postfork))
1802 loop_fork (EV_A); 2389 loop_fork (EV_A);
… …
1807 /* calculate blocking time */ 2394 /* calculate blocking time */
1808 { 2395 {
1809 ev_tstamp waittime = 0.; 2396 ev_tstamp waittime = 0.;
1810 ev_tstamp sleeptime = 0.; 2397 ev_tstamp sleeptime = 0.;
1811 2398
2399 /* remember old timestamp for io_blocktime calculation */
2400 ev_tstamp prev_mn_now = mn_now;
2401
2402 /* update time to cancel out callback processing overhead */
2403 time_update (EV_A_ 1e100);
2404
1812 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2405 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1813 { 2406 {
1814 /* update time to cancel out callback processing overhead */
1815 time_update (EV_A_ 1e100);
1816
1817 waittime = MAX_BLOCKTIME; 2407 waittime = MAX_BLOCKTIME;
1818 2408
1819 if (timercnt) 2409 if (timercnt)
1820 { 2410 {
1821 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2411 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1828 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2418 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1829 if (waittime > to) waittime = to; 2419 if (waittime > to) waittime = to;
1830 } 2420 }
1831#endif 2421#endif
1832 2422
2423 /* don't let timeouts decrease the waittime below timeout_blocktime */
1833 if (expect_false (waittime < timeout_blocktime)) 2424 if (expect_false (waittime < timeout_blocktime))
1834 waittime = timeout_blocktime; 2425 waittime = timeout_blocktime;
1835 2426
1836 sleeptime = waittime - backend_fudge; 2427 /* extra check because io_blocktime is commonly 0 */
1837
1838 if (expect_true (sleeptime > io_blocktime)) 2428 if (expect_false (io_blocktime))
1839 sleeptime = io_blocktime;
1840
1841 if (sleeptime)
1842 { 2429 {
2430 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2431
2432 if (sleeptime > waittime - backend_fudge)
2433 sleeptime = waittime - backend_fudge;
2434
2435 if (expect_true (sleeptime > 0.))
2436 {
1843 ev_sleep (sleeptime); 2437 ev_sleep (sleeptime);
1844 waittime -= sleeptime; 2438 waittime -= sleeptime;
2439 }
1845 } 2440 }
1846 } 2441 }
1847 2442
2443#if EV_FEATURE_API
1848 ++loop_count; 2444 ++loop_count;
2445#endif
2446 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1849 backend_poll (EV_A_ waittime); 2447 backend_poll (EV_A_ waittime);
2448 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1850 2449
1851 /* update ev_rt_now, do magic */ 2450 /* update ev_rt_now, do magic */
1852 time_update (EV_A_ waittime + sleeptime); 2451 time_update (EV_A_ waittime + sleeptime);
1853 } 2452 }
1854 2453
… …
1861#if EV_IDLE_ENABLE 2460#if EV_IDLE_ENABLE
1862 /* queue idle watchers unless other events are pending */ 2461 /* queue idle watchers unless other events are pending */
1863 idle_reify (EV_A); 2462 idle_reify (EV_A);
1864#endif 2463#endif
1865 2464
2465#if EV_CHECK_ENABLE
1866 /* queue check watchers, to be executed first */ 2466 /* queue check watchers, to be executed first */
1867 if (expect_false (checkcnt)) 2467 if (expect_false (checkcnt))
1868 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2468 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2469#endif
1869 2470
1870 call_pending (EV_A); 2471 EV_INVOKE_PENDING;
1871 } 2472 }
1872 while (expect_true ( 2473 while (expect_true (
1873 activecnt 2474 activecnt
1874 && !loop_done 2475 && !loop_done
1875 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2476 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1876 )); 2477 ));
1877 2478
1878 if (loop_done == EVUNLOOP_ONE) 2479 if (loop_done == EVBREAK_ONE)
1879 loop_done = EVUNLOOP_CANCEL; 2480 loop_done = EVBREAK_CANCEL;
1880}
1881 2481
2482#if EV_FEATURE_API
2483 --loop_depth;
2484#endif
2485}
2486
1882void 2487void
1883ev_unloop (EV_P_ int how) 2488ev_break (EV_P_ int how)
1884{ 2489{
1885 loop_done = how; 2490 loop_done = how;
1886} 2491}
1887 2492
2493void
2494ev_ref (EV_P)
2495{
2496 ++activecnt;
2497}
2498
2499void
2500ev_unref (EV_P)
2501{
2502 --activecnt;
2503}
2504
2505void
2506ev_now_update (EV_P)
2507{
2508 time_update (EV_A_ 1e100);
2509}
2510
2511void
2512ev_suspend (EV_P)
2513{
2514 ev_now_update (EV_A);
2515}
2516
2517void
2518ev_resume (EV_P)
2519{
2520 ev_tstamp mn_prev = mn_now;
2521
2522 ev_now_update (EV_A);
2523 timers_reschedule (EV_A_ mn_now - mn_prev);
2524#if EV_PERIODIC_ENABLE
2525 /* TODO: really do this? */
2526 periodics_reschedule (EV_A);
2527#endif
2528}
2529
1888/*****************************************************************************/ 2530/*****************************************************************************/
2531/* singly-linked list management, used when the expected list length is short */
1889 2532
1890void inline_size 2533inline_size void
1891wlist_add (WL *head, WL elem) 2534wlist_add (WL *head, WL elem)
1892{ 2535{
1893 elem->next = *head; 2536 elem->next = *head;
1894 *head = elem; 2537 *head = elem;
1895} 2538}
1896 2539
1897void inline_size 2540inline_size void
1898wlist_del (WL *head, WL elem) 2541wlist_del (WL *head, WL elem)
1899{ 2542{
1900 while (*head) 2543 while (*head)
1901 { 2544 {
1902 if (*head == elem) 2545 if (expect_true (*head == elem))
1903 { 2546 {
1904 *head = elem->next; 2547 *head = elem->next;
1905 return; 2548 break;
1906 } 2549 }
1907 2550
1908 head = &(*head)->next; 2551 head = &(*head)->next;
1909 } 2552 }
1910} 2553}
1911 2554
1912void inline_speed 2555/* internal, faster, version of ev_clear_pending */
2556inline_speed void
1913clear_pending (EV_P_ W w) 2557clear_pending (EV_P_ W w)
1914{ 2558{
1915 if (w->pending) 2559 if (w->pending)
1916 { 2560 {
1917 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2561 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1918 w->pending = 0; 2562 w->pending = 0;
1919 } 2563 }
1920} 2564}
1921 2565
1922int 2566int
… …
1926 int pending = w_->pending; 2570 int pending = w_->pending;
1927 2571
1928 if (expect_true (pending)) 2572 if (expect_true (pending))
1929 { 2573 {
1930 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2574 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2575 p->w = (W)&pending_w;
1931 w_->pending = 0; 2576 w_->pending = 0;
1932 p->w = 0;
1933 return p->events; 2577 return p->events;
1934 } 2578 }
1935 else 2579 else
1936 return 0; 2580 return 0;
1937} 2581}
1938 2582
1939void inline_size 2583inline_size void
1940pri_adjust (EV_P_ W w) 2584pri_adjust (EV_P_ W w)
1941{ 2585{
1942 int pri = w->priority; 2586 int pri = ev_priority (w);
1943 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2587 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1944 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2588 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1945 w->priority = pri; 2589 ev_set_priority (w, pri);
1946} 2590}
1947 2591
1948void inline_speed 2592inline_speed void
1949ev_start (EV_P_ W w, int active) 2593ev_start (EV_P_ W w, int active)
1950{ 2594{
1951 pri_adjust (EV_A_ w); 2595 pri_adjust (EV_A_ w);
1952 w->active = active; 2596 w->active = active;
1953 ev_ref (EV_A); 2597 ev_ref (EV_A);
1954} 2598}
1955 2599
1956void inline_size 2600inline_size void
1957ev_stop (EV_P_ W w) 2601ev_stop (EV_P_ W w)
1958{ 2602{
1959 ev_unref (EV_A); 2603 ev_unref (EV_A);
1960 w->active = 0; 2604 w->active = 0;
1961} 2605}
… …
1968 int fd = w->fd; 2612 int fd = w->fd;
1969 2613
1970 if (expect_false (ev_is_active (w))) 2614 if (expect_false (ev_is_active (w)))
1971 return; 2615 return;
1972 2616
1973 assert (("ev_io_start called with negative fd", fd >= 0)); 2617 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2618 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2619
2620 EV_FREQUENT_CHECK;
1974 2621
1975 ev_start (EV_A_ (W)w, 1); 2622 ev_start (EV_A_ (W)w, 1);
1976 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2623 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1977 wlist_add (&anfds[fd].head, (WL)w); 2624 wlist_add (&anfds[fd].head, (WL)w);
1978 2625
1979 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2626 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1980 w->events &= ~EV_IOFDSET; 2627 w->events &= ~EV__IOFDSET;
2628
2629 EV_FREQUENT_CHECK;
1981} 2630}
1982 2631
1983void noinline 2632void noinline
1984ev_io_stop (EV_P_ ev_io *w) 2633ev_io_stop (EV_P_ ev_io *w)
1985{ 2634{
1986 clear_pending (EV_A_ (W)w); 2635 clear_pending (EV_A_ (W)w);
1987 if (expect_false (!ev_is_active (w))) 2636 if (expect_false (!ev_is_active (w)))
1988 return; 2637 return;
1989 2638
1990 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2639 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2640
2641 EV_FREQUENT_CHECK;
1991 2642
1992 wlist_del (&anfds[w->fd].head, (WL)w); 2643 wlist_del (&anfds[w->fd].head, (WL)w);
1993 ev_stop (EV_A_ (W)w); 2644 ev_stop (EV_A_ (W)w);
1994 2645
1995 fd_change (EV_A_ w->fd, 1); 2646 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2647
2648 EV_FREQUENT_CHECK;
1996} 2649}
1997 2650
1998void noinline 2651void noinline
1999ev_timer_start (EV_P_ ev_timer *w) 2652ev_timer_start (EV_P_ ev_timer *w)
2000{ 2653{
2001 if (expect_false (ev_is_active (w))) 2654 if (expect_false (ev_is_active (w)))
2002 return; 2655 return;
2003 2656
2004 ev_at (w) += mn_now; 2657 ev_at (w) += mn_now;
2005 2658
2006 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2659 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2007 2660
2661 EV_FREQUENT_CHECK;
2662
2663 ++timercnt;
2008 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2664 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2009 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 2665 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2010 ANHE_w (timers [ev_active (w)]) = (WT)w; 2666 ANHE_w (timers [ev_active (w)]) = (WT)w;
2011 ANHE_at_set (timers [ev_active (w)]); 2667 ANHE_at_cache (timers [ev_active (w)]);
2012 upheap (timers, ev_active (w)); 2668 upheap (timers, ev_active (w));
2013 2669
2670 EV_FREQUENT_CHECK;
2671
2014 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ 2672 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2015} 2673}
2016 2674
2017void noinline 2675void noinline
2018ev_timer_stop (EV_P_ ev_timer *w) 2676ev_timer_stop (EV_P_ ev_timer *w)
2019{ 2677{
2020 clear_pending (EV_A_ (W)w); 2678 clear_pending (EV_A_ (W)w);
2021 if (expect_false (!ev_is_active (w))) 2679 if (expect_false (!ev_is_active (w)))
2022 return; 2680 return;
2023 2681
2682 EV_FREQUENT_CHECK;
2683
2024 { 2684 {
2025 int active = ev_active (w); 2685 int active = ev_active (w);
2026 2686
2027 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2687 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2028 2688
2689 --timercnt;
2690
2029 if (expect_true (active < timercnt + HEAP0 - 1)) 2691 if (expect_true (active < timercnt + HEAP0))
2030 { 2692 {
2031 timers [active] = timers [timercnt + HEAP0 - 1]; 2693 timers [active] = timers [timercnt + HEAP0];
2032 adjustheap (timers, timercnt, active); 2694 adjustheap (timers, timercnt, active);
2033 } 2695 }
2034
2035 --timercnt;
2036 } 2696 }
2037 2697
2038 ev_at (w) -= mn_now; 2698 ev_at (w) -= mn_now;
2039 2699
2040 ev_stop (EV_A_ (W)w); 2700 ev_stop (EV_A_ (W)w);
2701
2702 EV_FREQUENT_CHECK;
2041} 2703}
2042 2704
2043void noinline 2705void noinline
2044ev_timer_again (EV_P_ ev_timer *w) 2706ev_timer_again (EV_P_ ev_timer *w)
2045{ 2707{
2708 EV_FREQUENT_CHECK;
2709
2046 if (ev_is_active (w)) 2710 if (ev_is_active (w))
2047 { 2711 {
2048 if (w->repeat) 2712 if (w->repeat)
2049 { 2713 {
2050 ev_at (w) = mn_now + w->repeat; 2714 ev_at (w) = mn_now + w->repeat;
2051 ANHE_at_set (timers [ev_active (w)]); 2715 ANHE_at_cache (timers [ev_active (w)]);
2052 adjustheap (timers, timercnt, ev_active (w)); 2716 adjustheap (timers, timercnt, ev_active (w));
2053 } 2717 }
2054 else 2718 else
2055 ev_timer_stop (EV_A_ w); 2719 ev_timer_stop (EV_A_ w);
2056 } 2720 }
2057 else if (w->repeat) 2721 else if (w->repeat)
2058 { 2722 {
2059 ev_at (w) = w->repeat; 2723 ev_at (w) = w->repeat;
2060 ev_timer_start (EV_A_ w); 2724 ev_timer_start (EV_A_ w);
2061 } 2725 }
2726
2727 EV_FREQUENT_CHECK;
2728}
2729
2730ev_tstamp
2731ev_timer_remaining (EV_P_ ev_timer *w)
2732{
2733 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2062} 2734}
2063 2735
2064#if EV_PERIODIC_ENABLE 2736#if EV_PERIODIC_ENABLE
2065void noinline 2737void noinline
2066ev_periodic_start (EV_P_ ev_periodic *w) 2738ev_periodic_start (EV_P_ ev_periodic *w)
… …
2070 2742
2071 if (w->reschedule_cb) 2743 if (w->reschedule_cb)
2072 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2744 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073 else if (w->interval) 2745 else if (w->interval)
2074 { 2746 {
2075 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2747 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2076 /* this formula differs from the one in periodic_reify because we do not always round up */ 2748 /* this formula differs from the one in periodic_reify because we do not always round up */
2077 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2749 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2078 } 2750 }
2079 else 2751 else
2080 ev_at (w) = w->offset; 2752 ev_at (w) = w->offset;
2081 2753
2754 EV_FREQUENT_CHECK;
2755
2756 ++periodiccnt;
2082 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2757 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2083 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 2758 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2084 ANHE_w (periodics [ev_active (w)]) = (WT)w; 2759 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2760 ANHE_at_cache (periodics [ev_active (w)]);
2085 upheap (periodics, ev_active (w)); 2761 upheap (periodics, ev_active (w));
2086 2762
2763 EV_FREQUENT_CHECK;
2764
2087 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2765 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2088} 2766}
2089 2767
2090void noinline 2768void noinline
2091ev_periodic_stop (EV_P_ ev_periodic *w) 2769ev_periodic_stop (EV_P_ ev_periodic *w)
2092{ 2770{
2093 clear_pending (EV_A_ (W)w); 2771 clear_pending (EV_A_ (W)w);
2094 if (expect_false (!ev_is_active (w))) 2772 if (expect_false (!ev_is_active (w)))
2095 return; 2773 return;
2096 2774
2775 EV_FREQUENT_CHECK;
2776
2097 { 2777 {
2098 int active = ev_active (w); 2778 int active = ev_active (w);
2099 2779
2100 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2780 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2101 2781
2782 --periodiccnt;
2783
2102 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2784 if (expect_true (active < periodiccnt + HEAP0))
2103 { 2785 {
2104 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2786 periodics [active] = periodics [periodiccnt + HEAP0];
2105 adjustheap (periodics, periodiccnt, active); 2787 adjustheap (periodics, periodiccnt, active);
2106 } 2788 }
2107
2108 --periodiccnt;
2109 } 2789 }
2110 2790
2111 ev_stop (EV_A_ (W)w); 2791 ev_stop (EV_A_ (W)w);
2792
2793 EV_FREQUENT_CHECK;
2112} 2794}
2113 2795
2114void noinline 2796void noinline
2115ev_periodic_again (EV_P_ ev_periodic *w) 2797ev_periodic_again (EV_P_ ev_periodic *w)
2116{ 2798{
… …
2122 2804
2123#ifndef SA_RESTART 2805#ifndef SA_RESTART
2124# define SA_RESTART 0 2806# define SA_RESTART 0
2125#endif 2807#endif
2126 2808
2809#if EV_SIGNAL_ENABLE
2810
2127void noinline 2811void noinline
2128ev_signal_start (EV_P_ ev_signal *w) 2812ev_signal_start (EV_P_ ev_signal *w)
2129{ 2813{
2130#if EV_MULTIPLICITY
2131 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2132#endif
2133 if (expect_false (ev_is_active (w))) 2814 if (expect_false (ev_is_active (w)))
2134 return; 2815 return;
2135 2816
2136 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2817 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2137 2818
2138 evpipe_init (EV_A); 2819#if EV_MULTIPLICITY
2820 assert (("libev: a signal must not be attached to two different loops",
2821 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2139 2822
2823 signals [w->signum - 1].loop = EV_A;
2824#endif
2825
2826 EV_FREQUENT_CHECK;
2827
2828#if EV_USE_SIGNALFD
2829 if (sigfd == -2)
2140 { 2830 {
2141#ifndef _WIN32 2831 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2142 sigset_t full, prev; 2832 if (sigfd < 0 && errno == EINVAL)
2143 sigfillset (&full); 2833 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2144 sigprocmask (SIG_SETMASK, &full, &prev);
2145#endif
2146 2834
2147 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2835 if (sigfd >= 0)
2836 {
2837 fd_intern (sigfd); /* doing it twice will not hurt */
2148 2838
2149#ifndef _WIN32 2839 sigemptyset (&sigfd_set);
2150 sigprocmask (SIG_SETMASK, &prev, 0); 2840
2151#endif 2841 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2842 ev_set_priority (&sigfd_w, EV_MAXPRI);
2843 ev_io_start (EV_A_ &sigfd_w);
2844 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2845 }
2152 } 2846 }
2847
2848 if (sigfd >= 0)
2849 {
2850 /* TODO: check .head */
2851 sigaddset (&sigfd_set, w->signum);
2852 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2853
2854 signalfd (sigfd, &sigfd_set, 0);
2855 }
2856#endif
2153 2857
2154 ev_start (EV_A_ (W)w, 1); 2858 ev_start (EV_A_ (W)w, 1);
2155 wlist_add (&signals [w->signum - 1].head, (WL)w); 2859 wlist_add (&signals [w->signum - 1].head, (WL)w);
2156 2860
2157 if (!((WL)w)->next) 2861 if (!((WL)w)->next)
2862# if EV_USE_SIGNALFD
2863 if (sigfd < 0) /*TODO*/
2864# endif
2158 { 2865 {
2159#if _WIN32 2866# ifdef _WIN32
2867 evpipe_init (EV_A);
2868
2160 signal (w->signum, ev_sighandler); 2869 signal (w->signum, ev_sighandler);
2161#else 2870# else
2162 struct sigaction sa; 2871 struct sigaction sa;
2872
2873 evpipe_init (EV_A);
2874
2163 sa.sa_handler = ev_sighandler; 2875 sa.sa_handler = ev_sighandler;
2164 sigfillset (&sa.sa_mask); 2876 sigfillset (&sa.sa_mask);
2165 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2877 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2166 sigaction (w->signum, &sa, 0); 2878 sigaction (w->signum, &sa, 0);
2879
2880 sigemptyset (&sa.sa_mask);
2881 sigaddset (&sa.sa_mask, w->signum);
2882 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2167#endif 2883#endif
2168 } 2884 }
2885
2886 EV_FREQUENT_CHECK;
2169} 2887}
2170 2888
2171void noinline 2889void noinline
2172ev_signal_stop (EV_P_ ev_signal *w) 2890ev_signal_stop (EV_P_ ev_signal *w)
2173{ 2891{
2174 clear_pending (EV_A_ (W)w); 2892 clear_pending (EV_A_ (W)w);
2175 if (expect_false (!ev_is_active (w))) 2893 if (expect_false (!ev_is_active (w)))
2176 return; 2894 return;
2177 2895
2896 EV_FREQUENT_CHECK;
2897
2178 wlist_del (&signals [w->signum - 1].head, (WL)w); 2898 wlist_del (&signals [w->signum - 1].head, (WL)w);
2179 ev_stop (EV_A_ (W)w); 2899 ev_stop (EV_A_ (W)w);
2180 2900
2181 if (!signals [w->signum - 1].head) 2901 if (!signals [w->signum - 1].head)
2902 {
2903#if EV_MULTIPLICITY
2904 signals [w->signum - 1].loop = 0; /* unattach from signal */
2905#endif
2906#if EV_USE_SIGNALFD
2907 if (sigfd >= 0)
2908 {
2909 sigset_t ss;
2910
2911 sigemptyset (&ss);
2912 sigaddset (&ss, w->signum);
2913 sigdelset (&sigfd_set, w->signum);
2914
2915 signalfd (sigfd, &sigfd_set, 0);
2916 sigprocmask (SIG_UNBLOCK, &ss, 0);
2917 }
2918 else
2919#endif
2182 signal (w->signum, SIG_DFL); 2920 signal (w->signum, SIG_DFL);
2921 }
2922
2923 EV_FREQUENT_CHECK;
2183} 2924}
2925
2926#endif
2927
2928#if EV_CHILD_ENABLE
2184 2929
2185void 2930void
2186ev_child_start (EV_P_ ev_child *w) 2931ev_child_start (EV_P_ ev_child *w)
2187{ 2932{
2188#if EV_MULTIPLICITY 2933#if EV_MULTIPLICITY
2189 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2934 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2190#endif 2935#endif
2191 if (expect_false (ev_is_active (w))) 2936 if (expect_false (ev_is_active (w)))
2192 return; 2937 return;
2193 2938
2939 EV_FREQUENT_CHECK;
2940
2194 ev_start (EV_A_ (W)w, 1); 2941 ev_start (EV_A_ (W)w, 1);
2195 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2942 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2943
2944 EV_FREQUENT_CHECK;
2196} 2945}
2197 2946
2198void 2947void
2199ev_child_stop (EV_P_ ev_child *w) 2948ev_child_stop (EV_P_ ev_child *w)
2200{ 2949{
2201 clear_pending (EV_A_ (W)w); 2950 clear_pending (EV_A_ (W)w);
2202 if (expect_false (!ev_is_active (w))) 2951 if (expect_false (!ev_is_active (w)))
2203 return; 2952 return;
2204 2953
2954 EV_FREQUENT_CHECK;
2955
2205 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2956 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2206 ev_stop (EV_A_ (W)w); 2957 ev_stop (EV_A_ (W)w);
2958
2959 EV_FREQUENT_CHECK;
2207} 2960}
2961
2962#endif
2208 2963
2209#if EV_STAT_ENABLE 2964#if EV_STAT_ENABLE
2210 2965
2211# ifdef _WIN32 2966# ifdef _WIN32
2212# undef lstat 2967# undef lstat
2213# define lstat(a,b) _stati64 (a,b) 2968# define lstat(a,b) _stati64 (a,b)
2214# endif 2969# endif
2215 2970
2216#define DEF_STAT_INTERVAL 5.0074891 2971#define DEF_STAT_INTERVAL 5.0074891
2972#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2217#define MIN_STAT_INTERVAL 0.1074891 2973#define MIN_STAT_INTERVAL 0.1074891
2218 2974
2219static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2975static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2220 2976
2221#if EV_USE_INOTIFY 2977#if EV_USE_INOTIFY
2222# define EV_INOTIFY_BUFSIZE 8192 2978
2979/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2980# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2223 2981
2224static void noinline 2982static void noinline
2225infy_add (EV_P_ ev_stat *w) 2983infy_add (EV_P_ ev_stat *w)
2226{ 2984{
2227 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); 2985 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);
2228 2986
2229 if (w->wd < 0) 2987 if (w->wd >= 0)
2988 {
2989 struct statfs sfs;
2990
2991 /* now local changes will be tracked by inotify, but remote changes won't */
2992 /* unless the filesystem is known to be local, we therefore still poll */
2993 /* also do poll on <2.6.25, but with normal frequency */
2994
2995 if (!fs_2625)
2996 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2997 else if (!statfs (w->path, &sfs)
2998 && (sfs.f_type == 0x1373 /* devfs */
2999 || sfs.f_type == 0xEF53 /* ext2/3 */
3000 || sfs.f_type == 0x3153464a /* jfs */
3001 || sfs.f_type == 0x52654973 /* reiser3 */
3002 || sfs.f_type == 0x01021994 /* tempfs */
3003 || sfs.f_type == 0x58465342 /* xfs */))
3004 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3005 else
3006 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2230 { 3007 }
2231 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3008 else
3009 {
3010 /* can't use inotify, continue to stat */
3011 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2232 3012
2233 /* monitor some parent directory for speedup hints */ 3013 /* if path is not there, monitor some parent directory for speedup hints */
2234 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3014 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2235 /* but an efficiency issue only */ 3015 /* but an efficiency issue only */
2236 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3016 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2237 { 3017 {
2238 char path [4096]; 3018 char path [4096];
2239 strcpy (path, w->path); 3019 strcpy (path, w->path);
… …
2243 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3023 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2244 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3024 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2245 3025
2246 char *pend = strrchr (path, '/'); 3026 char *pend = strrchr (path, '/');
2247 3027
2248 if (!pend) 3028 if (!pend || pend == path)
2249 break; /* whoops, no '/', complain to your admin */ 3029 break;
2250 3030
2251 *pend = 0; 3031 *pend = 0;
2252 w->wd = inotify_add_watch (fs_fd, path, mask); 3032 w->wd = inotify_add_watch (fs_fd, path, mask);
2253 } 3033 }
2254 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3034 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2255 } 3035 }
2256 } 3036 }
2257 else
2258 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2259 3037
2260 if (w->wd >= 0) 3038 if (w->wd >= 0)
2261 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3039 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3040
3041 /* now re-arm timer, if required */
3042 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3043 ev_timer_again (EV_A_ &w->timer);
3044 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2262} 3045}
2263 3046
2264static void noinline 3047static void noinline
2265infy_del (EV_P_ ev_stat *w) 3048infy_del (EV_P_ ev_stat *w)
2266{ 3049{
… …
2269 3052
2270 if (wd < 0) 3053 if (wd < 0)
2271 return; 3054 return;
2272 3055
2273 w->wd = -2; 3056 w->wd = -2;
2274 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3057 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2275 wlist_del (&fs_hash [slot].head, (WL)w); 3058 wlist_del (&fs_hash [slot].head, (WL)w);
2276 3059
2277 /* remove this watcher, if others are watching it, they will rearm */ 3060 /* remove this watcher, if others are watching it, they will rearm */
2278 inotify_rm_watch (fs_fd, wd); 3061 inotify_rm_watch (fs_fd, wd);
2279} 3062}
2280 3063
2281static void noinline 3064static void noinline
2282infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3065infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2283{ 3066{
2284 if (slot < 0) 3067 if (slot < 0)
2285 /* overflow, need to check for all hahs slots */ 3068 /* overflow, need to check for all hash slots */
2286 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3069 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2287 infy_wd (EV_A_ slot, wd, ev); 3070 infy_wd (EV_A_ slot, wd, ev);
2288 else 3071 else
2289 { 3072 {
2290 WL w_; 3073 WL w_;
2291 3074
2292 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3075 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2293 { 3076 {
2294 ev_stat *w = (ev_stat *)w_; 3077 ev_stat *w = (ev_stat *)w_;
2295 w_ = w_->next; /* lets us remove this watcher and all before it */ 3078 w_ = w_->next; /* lets us remove this watcher and all before it */
2296 3079
2297 if (w->wd == wd || wd == -1) 3080 if (w->wd == wd || wd == -1)
2298 { 3081 {
2299 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3082 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2300 { 3083 {
3084 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2301 w->wd = -1; 3085 w->wd = -1;
2302 infy_add (EV_A_ w); /* re-add, no matter what */ 3086 infy_add (EV_A_ w); /* re-add, no matter what */
2303 } 3087 }
2304 3088
2305 stat_timer_cb (EV_A_ &w->timer, 0); 3089 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2310 3094
2311static void 3095static void
2312infy_cb (EV_P_ ev_io *w, int revents) 3096infy_cb (EV_P_ ev_io *w, int revents)
2313{ 3097{
2314 char buf [EV_INOTIFY_BUFSIZE]; 3098 char buf [EV_INOTIFY_BUFSIZE];
2315 struct inotify_event *ev = (struct inotify_event *)buf;
2316 int ofs; 3099 int ofs;
2317 int len = read (fs_fd, buf, sizeof (buf)); 3100 int len = read (fs_fd, buf, sizeof (buf));
2318 3101
2319 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3102 for (ofs = 0; ofs < len; )
3103 {
3104 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2320 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3105 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3106 ofs += sizeof (struct inotify_event) + ev->len;
3107 }
2321} 3108}
2322 3109
2323void inline_size 3110inline_size void
3111ev_check_2625 (EV_P)
3112{
3113 /* kernels < 2.6.25 are borked
3114 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3115 */
3116 if (ev_linux_version () < 0x020619)
3117 return;
3118
3119 fs_2625 = 1;
3120}
3121
3122inline_size int
3123infy_newfd (void)
3124{
3125#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3126 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3127 if (fd >= 0)
3128 return fd;
3129#endif
3130 return inotify_init ();
3131}
3132
3133inline_size void
2324infy_init (EV_P) 3134infy_init (EV_P)
2325{ 3135{
2326 if (fs_fd != -2) 3136 if (fs_fd != -2)
2327 return; 3137 return;
2328 3138
3139 fs_fd = -1;
3140
3141 ev_check_2625 (EV_A);
3142
2329 fs_fd = inotify_init (); 3143 fs_fd = infy_newfd ();
2330 3144
2331 if (fs_fd >= 0) 3145 if (fs_fd >= 0)
2332 { 3146 {
3147 fd_intern (fs_fd);
2333 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3148 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2334 ev_set_priority (&fs_w, EV_MAXPRI); 3149 ev_set_priority (&fs_w, EV_MAXPRI);
2335 ev_io_start (EV_A_ &fs_w); 3150 ev_io_start (EV_A_ &fs_w);
3151 ev_unref (EV_A);
2336 } 3152 }
2337} 3153}
2338 3154
2339void inline_size 3155inline_size void
2340infy_fork (EV_P) 3156infy_fork (EV_P)
2341{ 3157{
2342 int slot; 3158 int slot;
2343 3159
2344 if (fs_fd < 0) 3160 if (fs_fd < 0)
2345 return; 3161 return;
2346 3162
3163 ev_ref (EV_A);
3164 ev_io_stop (EV_A_ &fs_w);
2347 close (fs_fd); 3165 close (fs_fd);
2348 fs_fd = inotify_init (); 3166 fs_fd = infy_newfd ();
2349 3167
3168 if (fs_fd >= 0)
3169 {
3170 fd_intern (fs_fd);
3171 ev_io_set (&fs_w, fs_fd, EV_READ);
3172 ev_io_start (EV_A_ &fs_w);
3173 ev_unref (EV_A);
3174 }
3175
2350 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3176 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2351 { 3177 {
2352 WL w_ = fs_hash [slot].head; 3178 WL w_ = fs_hash [slot].head;
2353 fs_hash [slot].head = 0; 3179 fs_hash [slot].head = 0;
2354 3180
2355 while (w_) 3181 while (w_)
… …
2360 w->wd = -1; 3186 w->wd = -1;
2361 3187
2362 if (fs_fd >= 0) 3188 if (fs_fd >= 0)
2363 infy_add (EV_A_ w); /* re-add, no matter what */ 3189 infy_add (EV_A_ w); /* re-add, no matter what */
2364 else 3190 else
3191 {
3192 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3193 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2365 ev_timer_start (EV_A_ &w->timer); 3194 ev_timer_again (EV_A_ &w->timer);
3195 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3196 }
2366 } 3197 }
2367
2368 } 3198 }
2369} 3199}
2370 3200
3201#endif
3202
3203#ifdef _WIN32
3204# define EV_LSTAT(p,b) _stati64 (p, b)
3205#else
3206# define EV_LSTAT(p,b) lstat (p, b)
2371#endif 3207#endif
2372 3208
2373void 3209void
2374ev_stat_stat (EV_P_ ev_stat *w) 3210ev_stat_stat (EV_P_ ev_stat *w)
2375{ 3211{
… …
2382static void noinline 3218static void noinline
2383stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3219stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2384{ 3220{
2385 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3221 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2386 3222
2387 /* we copy this here each the time so that */ 3223 ev_statdata prev = w->attr;
2388 /* prev has the old value when the callback gets invoked */
2389 w->prev = w->attr;
2390 ev_stat_stat (EV_A_ w); 3224 ev_stat_stat (EV_A_ w);
2391 3225
2392 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3226 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2393 if ( 3227 if (
2394 w->prev.st_dev != w->attr.st_dev 3228 prev.st_dev != w->attr.st_dev
2395 || w->prev.st_ino != w->attr.st_ino 3229 || prev.st_ino != w->attr.st_ino
2396 || w->prev.st_mode != w->attr.st_mode 3230 || prev.st_mode != w->attr.st_mode
2397 || w->prev.st_nlink != w->attr.st_nlink 3231 || prev.st_nlink != w->attr.st_nlink
2398 || w->prev.st_uid != w->attr.st_uid 3232 || prev.st_uid != w->attr.st_uid
2399 || w->prev.st_gid != w->attr.st_gid 3233 || prev.st_gid != w->attr.st_gid
2400 || w->prev.st_rdev != w->attr.st_rdev 3234 || prev.st_rdev != w->attr.st_rdev
2401 || w->prev.st_size != w->attr.st_size 3235 || prev.st_size != w->attr.st_size
2402 || w->prev.st_atime != w->attr.st_atime 3236 || prev.st_atime != w->attr.st_atime
2403 || w->prev.st_mtime != w->attr.st_mtime 3237 || prev.st_mtime != w->attr.st_mtime
2404 || w->prev.st_ctime != w->attr.st_ctime 3238 || prev.st_ctime != w->attr.st_ctime
2405 ) { 3239 ) {
3240 /* we only update w->prev on actual differences */
3241 /* in case we test more often than invoke the callback, */
3242 /* to ensure that prev is always different to attr */
3243 w->prev = prev;
3244
2406 #if EV_USE_INOTIFY 3245 #if EV_USE_INOTIFY
3246 if (fs_fd >= 0)
3247 {
2407 infy_del (EV_A_ w); 3248 infy_del (EV_A_ w);
2408 infy_add (EV_A_ w); 3249 infy_add (EV_A_ w);
2409 ev_stat_stat (EV_A_ w); /* avoid race... */ 3250 ev_stat_stat (EV_A_ w); /* avoid race... */
3251 }
2410 #endif 3252 #endif
2411 3253
2412 ev_feed_event (EV_A_ w, EV_STAT); 3254 ev_feed_event (EV_A_ w, EV_STAT);
2413 } 3255 }
2414} 3256}
… …
2417ev_stat_start (EV_P_ ev_stat *w) 3259ev_stat_start (EV_P_ ev_stat *w)
2418{ 3260{
2419 if (expect_false (ev_is_active (w))) 3261 if (expect_false (ev_is_active (w)))
2420 return; 3262 return;
2421 3263
2422 /* since we use memcmp, we need to clear any padding data etc. */
2423 memset (&w->prev, 0, sizeof (ev_statdata));
2424 memset (&w->attr, 0, sizeof (ev_statdata));
2425
2426 ev_stat_stat (EV_A_ w); 3264 ev_stat_stat (EV_A_ w);
2427 3265
3266 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2428 if (w->interval < MIN_STAT_INTERVAL) 3267 w->interval = MIN_STAT_INTERVAL;
2429 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2430 3268
2431 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3269 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2432 ev_set_priority (&w->timer, ev_priority (w)); 3270 ev_set_priority (&w->timer, ev_priority (w));
2433 3271
2434#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
2435 infy_init (EV_A); 3273 infy_init (EV_A);
2436 3274
2437 if (fs_fd >= 0) 3275 if (fs_fd >= 0)
2438 infy_add (EV_A_ w); 3276 infy_add (EV_A_ w);
2439 else 3277 else
2440#endif 3278#endif
3279 {
2441 ev_timer_start (EV_A_ &w->timer); 3280 ev_timer_again (EV_A_ &w->timer);
3281 ev_unref (EV_A);
3282 }
2442 3283
2443 ev_start (EV_A_ (W)w, 1); 3284 ev_start (EV_A_ (W)w, 1);
3285
3286 EV_FREQUENT_CHECK;
2444} 3287}
2445 3288
2446void 3289void
2447ev_stat_stop (EV_P_ ev_stat *w) 3290ev_stat_stop (EV_P_ ev_stat *w)
2448{ 3291{
2449 clear_pending (EV_A_ (W)w); 3292 clear_pending (EV_A_ (W)w);
2450 if (expect_false (!ev_is_active (w))) 3293 if (expect_false (!ev_is_active (w)))
2451 return; 3294 return;
2452 3295
3296 EV_FREQUENT_CHECK;
3297
2453#if EV_USE_INOTIFY 3298#if EV_USE_INOTIFY
2454 infy_del (EV_A_ w); 3299 infy_del (EV_A_ w);
2455#endif 3300#endif
3301
3302 if (ev_is_active (&w->timer))
3303 {
3304 ev_ref (EV_A);
2456 ev_timer_stop (EV_A_ &w->timer); 3305 ev_timer_stop (EV_A_ &w->timer);
3306 }
2457 3307
2458 ev_stop (EV_A_ (W)w); 3308 ev_stop (EV_A_ (W)w);
3309
3310 EV_FREQUENT_CHECK;
2459} 3311}
2460#endif 3312#endif
2461 3313
2462#if EV_IDLE_ENABLE 3314#if EV_IDLE_ENABLE
2463void 3315void
… …
2465{ 3317{
2466 if (expect_false (ev_is_active (w))) 3318 if (expect_false (ev_is_active (w)))
2467 return; 3319 return;
2468 3320
2469 pri_adjust (EV_A_ (W)w); 3321 pri_adjust (EV_A_ (W)w);
3322
3323 EV_FREQUENT_CHECK;
2470 3324
2471 { 3325 {
2472 int active = ++idlecnt [ABSPRI (w)]; 3326 int active = ++idlecnt [ABSPRI (w)];
2473 3327
2474 ++idleall; 3328 ++idleall;
2475 ev_start (EV_A_ (W)w, active); 3329 ev_start (EV_A_ (W)w, active);
2476 3330
2477 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3331 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2478 idles [ABSPRI (w)][active - 1] = w; 3332 idles [ABSPRI (w)][active - 1] = w;
2479 } 3333 }
3334
3335 EV_FREQUENT_CHECK;
2480} 3336}
2481 3337
2482void 3338void
2483ev_idle_stop (EV_P_ ev_idle *w) 3339ev_idle_stop (EV_P_ ev_idle *w)
2484{ 3340{
2485 clear_pending (EV_A_ (W)w); 3341 clear_pending (EV_A_ (W)w);
2486 if (expect_false (!ev_is_active (w))) 3342 if (expect_false (!ev_is_active (w)))
2487 return; 3343 return;
2488 3344
3345 EV_FREQUENT_CHECK;
3346
2489 { 3347 {
2490 int active = ev_active (w); 3348 int active = ev_active (w);
2491 3349
2492 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3350 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2493 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3351 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2494 3352
2495 ev_stop (EV_A_ (W)w); 3353 ev_stop (EV_A_ (W)w);
2496 --idleall; 3354 --idleall;
2497 } 3355 }
2498}
2499#endif
2500 3356
3357 EV_FREQUENT_CHECK;
3358}
3359#endif
3360
3361#if EV_PREPARE_ENABLE
2501void 3362void
2502ev_prepare_start (EV_P_ ev_prepare *w) 3363ev_prepare_start (EV_P_ ev_prepare *w)
2503{ 3364{
2504 if (expect_false (ev_is_active (w))) 3365 if (expect_false (ev_is_active (w)))
2505 return; 3366 return;
3367
3368 EV_FREQUENT_CHECK;
2506 3369
2507 ev_start (EV_A_ (W)w, ++preparecnt); 3370 ev_start (EV_A_ (W)w, ++preparecnt);
2508 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3371 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2509 prepares [preparecnt - 1] = w; 3372 prepares [preparecnt - 1] = w;
3373
3374 EV_FREQUENT_CHECK;
2510} 3375}
2511 3376
2512void 3377void
2513ev_prepare_stop (EV_P_ ev_prepare *w) 3378ev_prepare_stop (EV_P_ ev_prepare *w)
2514{ 3379{
2515 clear_pending (EV_A_ (W)w); 3380 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w))) 3381 if (expect_false (!ev_is_active (w)))
2517 return; 3382 return;
2518 3383
3384 EV_FREQUENT_CHECK;
3385
2519 { 3386 {
2520 int active = ev_active (w); 3387 int active = ev_active (w);
2521 3388
2522 prepares [active - 1] = prepares [--preparecnt]; 3389 prepares [active - 1] = prepares [--preparecnt];
2523 ev_active (prepares [active - 1]) = active; 3390 ev_active (prepares [active - 1]) = active;
2524 } 3391 }
2525 3392
2526 ev_stop (EV_A_ (W)w); 3393 ev_stop (EV_A_ (W)w);
2527}
2528 3394
3395 EV_FREQUENT_CHECK;
3396}
3397#endif
3398
3399#if EV_CHECK_ENABLE
2529void 3400void
2530ev_check_start (EV_P_ ev_check *w) 3401ev_check_start (EV_P_ ev_check *w)
2531{ 3402{
2532 if (expect_false (ev_is_active (w))) 3403 if (expect_false (ev_is_active (w)))
2533 return; 3404 return;
3405
3406 EV_FREQUENT_CHECK;
2534 3407
2535 ev_start (EV_A_ (W)w, ++checkcnt); 3408 ev_start (EV_A_ (W)w, ++checkcnt);
2536 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3409 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2537 checks [checkcnt - 1] = w; 3410 checks [checkcnt - 1] = w;
3411
3412 EV_FREQUENT_CHECK;
2538} 3413}
2539 3414
2540void 3415void
2541ev_check_stop (EV_P_ ev_check *w) 3416ev_check_stop (EV_P_ ev_check *w)
2542{ 3417{
2543 clear_pending (EV_A_ (W)w); 3418 clear_pending (EV_A_ (W)w);
2544 if (expect_false (!ev_is_active (w))) 3419 if (expect_false (!ev_is_active (w)))
2545 return; 3420 return;
2546 3421
3422 EV_FREQUENT_CHECK;
3423
2547 { 3424 {
2548 int active = ev_active (w); 3425 int active = ev_active (w);
2549 3426
2550 checks [active - 1] = checks [--checkcnt]; 3427 checks [active - 1] = checks [--checkcnt];
2551 ev_active (checks [active - 1]) = active; 3428 ev_active (checks [active - 1]) = active;
2552 } 3429 }
2553 3430
2554 ev_stop (EV_A_ (W)w); 3431 ev_stop (EV_A_ (W)w);
3432
3433 EV_FREQUENT_CHECK;
2555} 3434}
3435#endif
2556 3436
2557#if EV_EMBED_ENABLE 3437#if EV_EMBED_ENABLE
2558void noinline 3438void noinline
2559ev_embed_sweep (EV_P_ ev_embed *w) 3439ev_embed_sweep (EV_P_ ev_embed *w)
2560{ 3440{
2561 ev_loop (w->other, EVLOOP_NONBLOCK); 3441 ev_run (w->other, EVRUN_NOWAIT);
2562} 3442}
2563 3443
2564static void 3444static void
2565embed_io_cb (EV_P_ ev_io *io, int revents) 3445embed_io_cb (EV_P_ ev_io *io, int revents)
2566{ 3446{
2567 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3447 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2568 3448
2569 if (ev_cb (w)) 3449 if (ev_cb (w))
2570 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3450 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2571 else 3451 else
2572 ev_loop (w->other, EVLOOP_NONBLOCK); 3452 ev_run (w->other, EVRUN_NOWAIT);
2573} 3453}
2574 3454
2575static void 3455static void
2576embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3456embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2577{ 3457{
2578 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3458 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2579 3459
2580 { 3460 {
2581 struct ev_loop *loop = w->other; 3461 EV_P = w->other;
2582 3462
2583 while (fdchangecnt) 3463 while (fdchangecnt)
2584 { 3464 {
2585 fd_reify (EV_A); 3465 fd_reify (EV_A);
2586 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3466 ev_run (EV_A_ EVRUN_NOWAIT);
2587 } 3467 }
2588 } 3468 }
3469}
3470
3471static void
3472embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3473{
3474 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3475
3476 ev_embed_stop (EV_A_ w);
3477
3478 {
3479 EV_P = w->other;
3480
3481 ev_loop_fork (EV_A);
3482 ev_run (EV_A_ EVRUN_NOWAIT);
3483 }
3484
3485 ev_embed_start (EV_A_ w);
2589} 3486}
2590 3487
2591#if 0 3488#if 0
2592static void 3489static void
2593embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3490embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2601{ 3498{
2602 if (expect_false (ev_is_active (w))) 3499 if (expect_false (ev_is_active (w)))
2603 return; 3500 return;
2604 3501
2605 { 3502 {
2606 struct ev_loop *loop = w->other; 3503 EV_P = w->other;
2607 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3504 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2608 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3505 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2609 } 3506 }
3507
3508 EV_FREQUENT_CHECK;
2610 3509
2611 ev_set_priority (&w->io, ev_priority (w)); 3510 ev_set_priority (&w->io, ev_priority (w));
2612 ev_io_start (EV_A_ &w->io); 3511 ev_io_start (EV_A_ &w->io);
2613 3512
2614 ev_prepare_init (&w->prepare, embed_prepare_cb); 3513 ev_prepare_init (&w->prepare, embed_prepare_cb);
2615 ev_set_priority (&w->prepare, EV_MINPRI); 3514 ev_set_priority (&w->prepare, EV_MINPRI);
2616 ev_prepare_start (EV_A_ &w->prepare); 3515 ev_prepare_start (EV_A_ &w->prepare);
2617 3516
3517 ev_fork_init (&w->fork, embed_fork_cb);
3518 ev_fork_start (EV_A_ &w->fork);
3519
2618 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3520 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2619 3521
2620 ev_start (EV_A_ (W)w, 1); 3522 ev_start (EV_A_ (W)w, 1);
3523
3524 EV_FREQUENT_CHECK;
2621} 3525}
2622 3526
2623void 3527void
2624ev_embed_stop (EV_P_ ev_embed *w) 3528ev_embed_stop (EV_P_ ev_embed *w)
2625{ 3529{
2626 clear_pending (EV_A_ (W)w); 3530 clear_pending (EV_A_ (W)w);
2627 if (expect_false (!ev_is_active (w))) 3531 if (expect_false (!ev_is_active (w)))
2628 return; 3532 return;
2629 3533
3534 EV_FREQUENT_CHECK;
3535
2630 ev_io_stop (EV_A_ &w->io); 3536 ev_io_stop (EV_A_ &w->io);
2631 ev_prepare_stop (EV_A_ &w->prepare); 3537 ev_prepare_stop (EV_A_ &w->prepare);
3538 ev_fork_stop (EV_A_ &w->fork);
2632 3539
2633 ev_stop (EV_A_ (W)w); 3540 ev_stop (EV_A_ (W)w);
3541
3542 EV_FREQUENT_CHECK;
2634} 3543}
2635#endif 3544#endif
2636 3545
2637#if EV_FORK_ENABLE 3546#if EV_FORK_ENABLE
2638void 3547void
2639ev_fork_start (EV_P_ ev_fork *w) 3548ev_fork_start (EV_P_ ev_fork *w)
2640{ 3549{
2641 if (expect_false (ev_is_active (w))) 3550 if (expect_false (ev_is_active (w)))
2642 return; 3551 return;
3552
3553 EV_FREQUENT_CHECK;
2643 3554
2644 ev_start (EV_A_ (W)w, ++forkcnt); 3555 ev_start (EV_A_ (W)w, ++forkcnt);
2645 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3556 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2646 forks [forkcnt - 1] = w; 3557 forks [forkcnt - 1] = w;
3558
3559 EV_FREQUENT_CHECK;
2647} 3560}
2648 3561
2649void 3562void
2650ev_fork_stop (EV_P_ ev_fork *w) 3563ev_fork_stop (EV_P_ ev_fork *w)
2651{ 3564{
2652 clear_pending (EV_A_ (W)w); 3565 clear_pending (EV_A_ (W)w);
2653 if (expect_false (!ev_is_active (w))) 3566 if (expect_false (!ev_is_active (w)))
2654 return; 3567 return;
2655 3568
3569 EV_FREQUENT_CHECK;
3570
2656 { 3571 {
2657 int active = ev_active (w); 3572 int active = ev_active (w);
2658 3573
2659 forks [active - 1] = forks [--forkcnt]; 3574 forks [active - 1] = forks [--forkcnt];
2660 ev_active (forks [active - 1]) = active; 3575 ev_active (forks [active - 1]) = active;
2661 } 3576 }
2662 3577
2663 ev_stop (EV_A_ (W)w); 3578 ev_stop (EV_A_ (W)w);
2664}
2665#endif
2666 3579
3580 EV_FREQUENT_CHECK;
3581}
3582#endif
3583
2667#if EV_ASYNC_ENABLE 3584#if EV_CLEANUP_ENABLE
2668void 3585void
2669ev_async_start (EV_P_ ev_async *w) 3586ev_cleanup_start (EV_P_ ev_cleanup *w)
2670{ 3587{
2671 if (expect_false (ev_is_active (w))) 3588 if (expect_false (ev_is_active (w)))
2672 return; 3589 return;
2673 3590
3591 EV_FREQUENT_CHECK;
3592
3593 ev_start (EV_A_ (W)w, ++cleanupcnt);
3594 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3595 cleanups [cleanupcnt - 1] = w;
3596
3597 EV_FREQUENT_CHECK;
3598}
3599
3600void
3601ev_cleanup_stop (EV_P_ ev_cleanup *w)
3602{
3603 clear_pending (EV_A_ (W)w);
3604 if (expect_false (!ev_is_active (w)))
3605 return;
3606
3607 EV_FREQUENT_CHECK;
3608
3609 {
3610 int active = ev_active (w);
3611
3612 cleanups [active - 1] = cleanups [--cleanupcnt];
3613 ev_active (cleanups [active - 1]) = active;
3614 }
3615
3616 ev_stop (EV_A_ (W)w);
3617
3618 EV_FREQUENT_CHECK;
3619}
3620#endif
3621
3622#if EV_ASYNC_ENABLE
3623void
3624ev_async_start (EV_P_ ev_async *w)
3625{
3626 if (expect_false (ev_is_active (w)))
3627 return;
3628
3629 w->sent = 0;
3630
2674 evpipe_init (EV_A); 3631 evpipe_init (EV_A);
3632
3633 EV_FREQUENT_CHECK;
2675 3634
2676 ev_start (EV_A_ (W)w, ++asynccnt); 3635 ev_start (EV_A_ (W)w, ++asynccnt);
2677 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3636 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2678 asyncs [asynccnt - 1] = w; 3637 asyncs [asynccnt - 1] = w;
3638
3639 EV_FREQUENT_CHECK;
2679} 3640}
2680 3641
2681void 3642void
2682ev_async_stop (EV_P_ ev_async *w) 3643ev_async_stop (EV_P_ ev_async *w)
2683{ 3644{
2684 clear_pending (EV_A_ (W)w); 3645 clear_pending (EV_A_ (W)w);
2685 if (expect_false (!ev_is_active (w))) 3646 if (expect_false (!ev_is_active (w)))
2686 return; 3647 return;
2687 3648
3649 EV_FREQUENT_CHECK;
3650
2688 { 3651 {
2689 int active = ev_active (w); 3652 int active = ev_active (w);
2690 3653
2691 asyncs [active - 1] = asyncs [--asynccnt]; 3654 asyncs [active - 1] = asyncs [--asynccnt];
2692 ev_active (asyncs [active - 1]) = active; 3655 ev_active (asyncs [active - 1]) = active;
2693 } 3656 }
2694 3657
2695 ev_stop (EV_A_ (W)w); 3658 ev_stop (EV_A_ (W)w);
3659
3660 EV_FREQUENT_CHECK;
2696} 3661}
2697 3662
2698void 3663void
2699ev_async_send (EV_P_ ev_async *w) 3664ev_async_send (EV_P_ ev_async *w)
2700{ 3665{
2701 w->sent = 1; 3666 w->sent = 1;
2702 evpipe_write (EV_A_ &gotasync); 3667 evpipe_write (EV_A_ &async_pending);
2703} 3668}
2704#endif 3669#endif
2705 3670
2706/*****************************************************************************/ 3671/*****************************************************************************/
2707 3672
… …
2717once_cb (EV_P_ struct ev_once *once, int revents) 3682once_cb (EV_P_ struct ev_once *once, int revents)
2718{ 3683{
2719 void (*cb)(int revents, void *arg) = once->cb; 3684 void (*cb)(int revents, void *arg) = once->cb;
2720 void *arg = once->arg; 3685 void *arg = once->arg;
2721 3686
2722 ev_io_stop (EV_A_ &once->io); 3687 ev_io_stop (EV_A_ &once->io);
2723 ev_timer_stop (EV_A_ &once->to); 3688 ev_timer_stop (EV_A_ &once->to);
2724 ev_free (once); 3689 ev_free (once);
2725 3690
2726 cb (revents, arg); 3691 cb (revents, arg);
2727} 3692}
2728 3693
2729static void 3694static void
2730once_cb_io (EV_P_ ev_io *w, int revents) 3695once_cb_io (EV_P_ ev_io *w, int revents)
2731{ 3696{
2732 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3697 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3698
3699 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2733} 3700}
2734 3701
2735static void 3702static void
2736once_cb_to (EV_P_ ev_timer *w, int revents) 3703once_cb_to (EV_P_ ev_timer *w, int revents)
2737{ 3704{
2738 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3705 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3706
3707 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2739} 3708}
2740 3709
2741void 3710void
2742ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3711ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2743{ 3712{
2744 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3713 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2745 3714
2746 if (expect_false (!once)) 3715 if (expect_false (!once))
2747 { 3716 {
2748 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3717 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2749 return; 3718 return;
2750 } 3719 }
2751 3720
2752 once->cb = cb; 3721 once->cb = cb;
2753 once->arg = arg; 3722 once->arg = arg;
… …
2765 ev_timer_set (&once->to, timeout, 0.); 3734 ev_timer_set (&once->to, timeout, 0.);
2766 ev_timer_start (EV_A_ &once->to); 3735 ev_timer_start (EV_A_ &once->to);
2767 } 3736 }
2768} 3737}
2769 3738
3739/*****************************************************************************/
3740
3741#if EV_WALK_ENABLE
3742void
3743ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3744{
3745 int i, j;
3746 ev_watcher_list *wl, *wn;
3747
3748 if (types & (EV_IO | EV_EMBED))
3749 for (i = 0; i < anfdmax; ++i)
3750 for (wl = anfds [i].head; wl; )
3751 {
3752 wn = wl->next;
3753
3754#if EV_EMBED_ENABLE
3755 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3756 {
3757 if (types & EV_EMBED)
3758 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3759 }
3760 else
3761#endif
3762#if EV_USE_INOTIFY
3763 if (ev_cb ((ev_io *)wl) == infy_cb)
3764 ;
3765 else
3766#endif
3767 if ((ev_io *)wl != &pipe_w)
3768 if (types & EV_IO)
3769 cb (EV_A_ EV_IO, wl);
3770
3771 wl = wn;
3772 }
3773
3774 if (types & (EV_TIMER | EV_STAT))
3775 for (i = timercnt + HEAP0; i-- > HEAP0; )
3776#if EV_STAT_ENABLE
3777 /*TODO: timer is not always active*/
3778 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3779 {
3780 if (types & EV_STAT)
3781 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3782 }
3783 else
3784#endif
3785 if (types & EV_TIMER)
3786 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3787
3788#if EV_PERIODIC_ENABLE
3789 if (types & EV_PERIODIC)
3790 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3791 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3792#endif
3793
3794#if EV_IDLE_ENABLE
3795 if (types & EV_IDLE)
3796 for (j = NUMPRI; i--; )
3797 for (i = idlecnt [j]; i--; )
3798 cb (EV_A_ EV_IDLE, idles [j][i]);
3799#endif
3800
3801#if EV_FORK_ENABLE
3802 if (types & EV_FORK)
3803 for (i = forkcnt; i--; )
3804 if (ev_cb (forks [i]) != embed_fork_cb)
3805 cb (EV_A_ EV_FORK, forks [i]);
3806#endif
3807
3808#if EV_ASYNC_ENABLE
3809 if (types & EV_ASYNC)
3810 for (i = asynccnt; i--; )
3811 cb (EV_A_ EV_ASYNC, asyncs [i]);
3812#endif
3813
3814#if EV_PREPARE_ENABLE
3815 if (types & EV_PREPARE)
3816 for (i = preparecnt; i--; )
3817# if EV_EMBED_ENABLE
3818 if (ev_cb (prepares [i]) != embed_prepare_cb)
3819# endif
3820 cb (EV_A_ EV_PREPARE, prepares [i]);
3821#endif
3822
3823#if EV_CHECK_ENABLE
3824 if (types & EV_CHECK)
3825 for (i = checkcnt; i--; )
3826 cb (EV_A_ EV_CHECK, checks [i]);
3827#endif
3828
3829#if EV_SIGNAL_ENABLE
3830 if (types & EV_SIGNAL)
3831 for (i = 0; i < EV_NSIG - 1; ++i)
3832 for (wl = signals [i].head; wl; )
3833 {
3834 wn = wl->next;
3835 cb (EV_A_ EV_SIGNAL, wl);
3836 wl = wn;
3837 }
3838#endif
3839
3840#if EV_CHILD_ENABLE
3841 if (types & EV_CHILD)
3842 for (i = (EV_PID_HASHSIZE); i--; )
3843 for (wl = childs [i]; wl; )
3844 {
3845 wn = wl->next;
3846 cb (EV_A_ EV_CHILD, wl);
3847 wl = wn;
3848 }
3849#endif
3850/* EV_STAT 0x00001000 /* stat data changed */
3851/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3852}
3853#endif
3854
2770#if EV_MULTIPLICITY 3855#if EV_MULTIPLICITY
2771 #include "ev_wrap.h" 3856 #include "ev_wrap.h"
2772#endif 3857#endif
2773 3858
2774#ifdef __cplusplus 3859EV_CPP(})
2775}
2776#endif
2777 3860

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