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Comparing libev/ev.c (file contents):
Revision 1.222 by root, Sun Apr 6 12:45:58 2008 UTC vs.
Revision 1.362 by root, Sun Oct 24 19:15:52 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
303# define expect(expr,value) (expr) 466# define expect(expr,value) (expr)
304# define noinline 467# define noinline
305# if __STDC_VERSION__ < 199901L 468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline 469# define inline
307# endif 470# endif
308#endif 471#endif
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;
327typedef ev_watcher_list *WL; 495typedef ev_watcher_list *WL;
328typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
329 497
498#define ev_active(w) ((W)(w))->active
499#define ev_at(w) ((WT)(w))->at
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
330#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
331/* sig_atomic_t is used to avoid per-thread variables or locking but still */
332/* giving it a reasonably high chance of working on typical architetcures */
333static 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)
334#endif 519#endif
335 520
336#ifdef _WIN32 521#ifdef _WIN32
337# include "ev_win32.c" 522# include "ev_win32.c"
338#endif 523#endif
339 524
340/*****************************************************************************/ 525/*****************************************************************************/
341 526
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
342static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
343 578
344void 579void
345ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
346{ 581{
347 syserr_cb = cb; 582 syserr_cb = cb;
348} 583}
349 584
350static void noinline 585static void noinline
351syserr (const char *msg) 586ev_syserr (const char *msg)
352{ 587{
353 if (!msg) 588 if (!msg)
354 msg = "(libev) system error"; 589 msg = "(libev) system error";
355 590
356 if (syserr_cb) 591 if (syserr_cb)
357 syserr_cb (msg); 592 syserr_cb (msg);
358 else 593 else
359 { 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
360 perror (msg); 603 perror (msg);
604#endif
361 abort (); 605 abort ();
362 } 606 }
363} 607}
364 608
609static void *
610ev_realloc_emul (void *ptr, long size)
611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
615 /* some systems, notably openbsd and darwin, fail to properly
616 * implement realloc (x, 0) (as required by both ansi c-89 and
617 * the single unix specification, so work around them here.
618 */
619
620 if (size)
621 return realloc (ptr, size);
622
623 free (ptr);
624 return 0;
625#endif
626}
627
365static void *(*alloc)(void *ptr, long size); 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
366 629
367void 630void
368ev_set_allocator (void *(*cb)(void *ptr, long size)) 631ev_set_allocator (void *(*cb)(void *ptr, long size))
369{ 632{
370 alloc = cb; 633 alloc = cb;
371} 634}
372 635
373inline_speed void * 636inline_speed void *
374ev_realloc (void *ptr, long size) 637ev_realloc (void *ptr, long size)
375{ 638{
376 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 639 ptr = alloc (ptr, size);
377 640
378 if (!ptr && size) 641 if (!ptr && size)
379 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
380 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
381 abort (); 648 abort ();
382 } 649 }
383 650
384 return ptr; 651 return ptr;
385} 652}
… …
387#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
388#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
389 656
390/*****************************************************************************/ 657/*****************************************************************************/
391 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
392typedef struct 663typedef struct
393{ 664{
394 WL head; 665 WL head;
395 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 */
396 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
397#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
398 SOCKET handle; 674 SOCKET handle;
399#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
400} ANFD; 679} ANFD;
401 680
681/* stores the pending event set for a given watcher */
402typedef struct 682typedef struct
403{ 683{
404 W w; 684 W w;
405 int events; 685 int events; /* the pending event set for the given watcher */
406} ANPENDING; 686} ANPENDING;
407 687
408#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
689/* hash table entry per inotify-id */
409typedef struct 690typedef struct
410{ 691{
411 WL head; 692 WL head;
412} ANFS; 693} ANFS;
694#endif
695
696/* Heap Entry */
697#if EV_HEAP_CACHE_AT
698 /* a heap element */
699 typedef struct {
700 ev_tstamp at;
701 WT w;
702 } ANHE;
703
704 #define ANHE_w(he) (he).w /* access watcher, read-write */
705 #define ANHE_at(he) (he).at /* access cached at, read-only */
706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
707#else
708 /* a heap element */
709 typedef WT ANHE;
710
711 #define ANHE_w(he) (he)
712 #define ANHE_at(he) (he)->at
713 #define ANHE_at_cache(he)
413#endif 714#endif
414 715
415#if EV_MULTIPLICITY 716#if EV_MULTIPLICITY
416 717
417 struct ev_loop 718 struct ev_loop
… …
436 737
437 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
438 739
439#endif 740#endif
440 741
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
441/*****************************************************************************/ 754/*****************************************************************************/
442 755
756#ifndef EV_HAVE_EV_TIME
443ev_tstamp 757ev_tstamp
444ev_time (void) 758ev_time (void)
445{ 759{
446#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
447 struct timespec ts; 763 struct timespec ts;
448 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
449 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
450#else 766 }
767#endif
768
451 struct timeval tv; 769 struct timeval tv;
452 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
453 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
454#endif
455} 772}
773#endif
456 774
457ev_tstamp inline_size 775inline_size ev_tstamp
458get_clock (void) 776get_clock (void)
459{ 777{
460#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
461 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
462 { 780 {
… …
483 if (delay > 0.) 801 if (delay > 0.)
484 { 802 {
485#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
486 struct timespec ts; 804 struct timespec ts;
487 805
488 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
489 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
490
491 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
492#elif defined(_WIN32) 808#elif defined(_WIN32)
493 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
494#else 810#else
495 struct timeval tv; 811 struct timeval tv;
496 812
497 tv.tv_sec = (time_t)delay; 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
498 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 814 /* something not guaranteed by newer posix versions, but guaranteed */
499 815 /* by older ones */
816 EV_TV_SET (tv, delay);
500 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
501#endif 818#endif
502 } 819 }
503} 820}
504 821
505/*****************************************************************************/ 822/*****************************************************************************/
506 823
507int inline_size 824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
825
826/* find a suitable new size for the given array, */
827/* hopefully by rounding to a nice-to-malloc size */
828inline_size int
508array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
509{ 830{
510 int ncur = cur + 1; 831 int ncur = cur + 1;
511 832
512 do 833 do
513 ncur <<= 1; 834 ncur <<= 1;
514 while (cnt > ncur); 835 while (cnt > ncur);
515 836
516 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 837 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
517 if (elem * ncur > 4096) 838 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
518 { 839 {
519 ncur *= elem; 840 ncur *= elem;
520 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 841 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
521 ncur = ncur - sizeof (void *) * 4; 842 ncur = ncur - sizeof (void *) * 4;
522 ncur /= elem; 843 ncur /= elem;
523 } 844 }
524 845
525 return ncur; 846 return ncur;
… …
529array_realloc (int elem, void *base, int *cur, int cnt) 850array_realloc (int elem, void *base, int *cur, int cnt)
530{ 851{
531 *cur = array_nextsize (elem, *cur, cnt); 852 *cur = array_nextsize (elem, *cur, cnt);
532 return ev_realloc (base, elem * *cur); 853 return ev_realloc (base, elem * *cur);
533} 854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
534 858
535#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
536 if (expect_false ((cnt) > (cur))) \ 860 if (expect_false ((cnt) > (cur))) \
537 { \ 861 { \
538 int ocur_ = (cur); \ 862 int ocur_ = (cur); \
… …
550 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
551 } 875 }
552#endif 876#endif
553 877
554#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
555 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
556 880
557/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
558 888
559void noinline 889void noinline
560ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
561{ 891{
562 W w_ = (W)w; 892 W w_ = (W)w;
… …
571 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
572 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
573 } 903 }
574} 904}
575 905
576void 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
577queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
578{ 923{
579 int i; 924 int i;
580 925
581 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
582 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
583} 928}
584 929
585/*****************************************************************************/ 930/*****************************************************************************/
586 931
587void inline_size 932inline_speed void
588anfds_init (ANFD *base, int count)
589{
590 while (count--)
591 {
592 base->head = 0;
593 base->events = EV_NONE;
594 base->reify = 0;
595
596 ++base;
597 }
598}
599
600void inline_speed
601fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
602{ 934{
603 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
604 ev_io *w; 936 ev_io *w;
605 937
606 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)
… …
610 if (ev) 942 if (ev)
611 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
612 } 944 }
613} 945}
614 946
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
615void 958void
616ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
617{ 960{
618 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
619 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
620} 963}
621 964
622void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
623fd_reify (EV_P) 968fd_reify (EV_P)
624{ 969{
625 int i; 970 int i;
626 971
627 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
628 { 973 {
629 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
630 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
631 ev_io *w; 976 ev_io *w;
632 977
633 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
634 980
635 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
636 events |= (unsigned char)w->events;
637 982
638#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
639 if (events) 984 if (o_reify & EV__IOFDSET)
640 { 985 {
641 unsigned long argp; 986 unsigned long arg;
642 #ifdef EV_FD_TO_WIN32_HANDLE
643 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
644 #else
645 anfd->handle = _get_osfhandle (fd);
646 #endif
647 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
648 } 990 }
649#endif 991#endif
650 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
651 { 994 {
652 unsigned char o_events = anfd->events;
653 unsigned char o_reify = anfd->reify;
654
655 anfd->reify = 0;
656 anfd->events = events; 995 anfd->events = 0;
657 996
658 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)
659 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
660 }
661 } 1006 }
662 1007
663 fdchangecnt = 0; 1008 fdchangecnt = 0;
664} 1009}
665 1010
666void inline_size 1011/* something about the given fd changed */
1012inline_size void
667fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
668{ 1014{
669 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
670 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
671 1017
… …
675 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
676 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
677 } 1023 }
678} 1024}
679 1025
680void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
681fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
682{ 1029{
683 ev_io *w; 1030 ev_io *w;
684 1031
685 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
687 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
688 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);
689 } 1036 }
690} 1037}
691 1038
692int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
693fd_valid (int fd) 1041fd_valid (int fd)
694{ 1042{
695#ifdef _WIN32 1043#ifdef _WIN32
696 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
697#else 1045#else
698 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
699#endif 1047#endif
700} 1048}
701 1049
… …
705{ 1053{
706 int fd; 1054 int fd;
707 1055
708 for (fd = 0; fd < anfdmax; ++fd) 1056 for (fd = 0; fd < anfdmax; ++fd)
709 if (anfds [fd].events) 1057 if (anfds [fd].events)
710 if (!fd_valid (fd) == -1 && errno == EBADF) 1058 if (!fd_valid (fd) && errno == EBADF)
711 fd_kill (EV_A_ fd); 1059 fd_kill (EV_A_ fd);
712} 1060}
713 1061
714/* 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 */
715static void noinline 1063static void noinline
… …
719 1067
720 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
721 if (anfds [fd].events) 1069 if (anfds [fd].events)
722 { 1070 {
723 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
724 return; 1072 break;
725 } 1073 }
726} 1074}
727 1075
728/* 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 */
729static void noinline 1077static void noinline
… …
733 1081
734 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
735 if (anfds [fd].events) 1083 if (anfds [fd].events)
736 { 1084 {
737 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
1086 anfds [fd].emask = 0;
738 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
739 } 1088 }
740} 1089}
741 1090
742/*****************************************************************************/ 1091/* used to prepare libev internal fd's */
743 1092/* this is not fork-safe */
744void inline_speed 1093inline_speed void
745upheap (WT *heap, int k)
746{
747 WT w = heap [k];
748
749 while (k)
750 {
751 int p = (k - 1) >> 1;
752
753 if (heap [p]->at <= w->at)
754 break;
755
756 heap [k] = heap [p];
757 ((W)heap [k])->active = k + 1;
758 k = p;
759 }
760
761 heap [k] = w;
762 ((W)heap [k])->active = k + 1;
763}
764
765void inline_speed
766downheap (WT *heap, int N, int k)
767{
768 WT w = heap [k];
769
770 for (;;)
771 {
772 int c = (k << 1) + 1;
773
774 if (c >= N)
775 break;
776
777 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
778 ? 1 : 0;
779
780 if (w->at <= heap [c]->at)
781 break;
782
783 heap [k] = heap [c];
784 ((W)heap [k])->active = k + 1;
785
786 k = c;
787 }
788
789 heap [k] = w;
790 ((W)heap [k])->active = k + 1;
791}
792
793void inline_size
794adjustheap (WT *heap, int N, int k)
795{
796 upheap (heap, k);
797 downheap (heap, N, k);
798}
799
800/*****************************************************************************/
801
802typedef struct
803{
804 WL head;
805 EV_ATOMIC_T gotsig;
806} ANSIG;
807
808static ANSIG *signals;
809static int signalmax;
810
811static EV_ATOMIC_T gotsig;
812
813void inline_size
814signals_init (ANSIG *base, int count)
815{
816 while (count--)
817 {
818 base->head = 0;
819 base->gotsig = 0;
820
821 ++base;
822 }
823}
824
825/*****************************************************************************/
826
827void inline_speed
828fd_intern (int fd) 1094fd_intern (int fd)
829{ 1095{
830#ifdef _WIN32 1096#ifdef _WIN32
831 int arg = 1; 1097 unsigned long arg = 1;
832 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
833#else 1099#else
834 fcntl (fd, F_SETFD, FD_CLOEXEC); 1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
835 fcntl (fd, F_SETFL, O_NONBLOCK); 1101 fcntl (fd, F_SETFL, O_NONBLOCK);
836#endif 1102#endif
837} 1103}
838 1104
1105/*****************************************************************************/
1106
1107/*
1108 * the heap functions want a real array index. array index 0 is guaranteed to not
1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1110 * the branching factor of the d-tree.
1111 */
1112
1113/*
1114 * at the moment we allow libev the luxury of two heaps,
1115 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1116 * which is more cache-efficient.
1117 * the difference is about 5% with 50000+ watchers.
1118 */
1119#if EV_USE_4HEAP
1120
1121#define DHEAP 4
1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1124#define UPHEAP_DONE(p,k) ((p) == (k))
1125
1126/* away from the root */
1127inline_speed void
1128downheap (ANHE *heap, int N, int k)
1129{
1130 ANHE he = heap [k];
1131 ANHE *E = heap + N + HEAP0;
1132
1133 for (;;)
1134 {
1135 ev_tstamp minat;
1136 ANHE *minpos;
1137 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1138
1139 /* find minimum child */
1140 if (expect_true (pos + DHEAP - 1 < E))
1141 {
1142 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1143 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1144 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1145 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1146 }
1147 else if (pos < E)
1148 {
1149 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1150 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1151 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1152 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1153 }
1154 else
1155 break;
1156
1157 if (ANHE_at (he) <= minat)
1158 break;
1159
1160 heap [k] = *minpos;
1161 ev_active (ANHE_w (*minpos)) = k;
1162
1163 k = minpos - heap;
1164 }
1165
1166 heap [k] = he;
1167 ev_active (ANHE_w (he)) = k;
1168}
1169
1170#else /* 4HEAP */
1171
1172#define HEAP0 1
1173#define HPARENT(k) ((k) >> 1)
1174#define UPHEAP_DONE(p,k) (!(p))
1175
1176/* away from the root */
1177inline_speed void
1178downheap (ANHE *heap, int N, int k)
1179{
1180 ANHE he = heap [k];
1181
1182 for (;;)
1183 {
1184 int c = k << 1;
1185
1186 if (c >= N + HEAP0)
1187 break;
1188
1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1190 ? 1 : 0;
1191
1192 if (ANHE_at (he) <= ANHE_at (heap [c]))
1193 break;
1194
1195 heap [k] = heap [c];
1196 ev_active (ANHE_w (heap [k])) = k;
1197
1198 k = c;
1199 }
1200
1201 heap [k] = he;
1202 ev_active (ANHE_w (he)) = k;
1203}
1204#endif
1205
1206/* towards the root */
1207inline_speed void
1208upheap (ANHE *heap, int k)
1209{
1210 ANHE he = heap [k];
1211
1212 for (;;)
1213 {
1214 int p = HPARENT (k);
1215
1216 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1217 break;
1218
1219 heap [k] = heap [p];
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
1230adjustheap (ANHE *heap, int N, int k)
1231{
1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1233 upheap (heap, k);
1234 else
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);
1248}
1249
1250/*****************************************************************************/
1251
1252/* associate signal watchers to a signal signal */
1253typedef struct
1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
1259 WL head;
1260} ANSIG;
1261
1262static ANSIG signals [EV_NSIG - 1];
1263
1264/*****************************************************************************/
1265
1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1267
839static void noinline 1268static void noinline
840evpipe_init (EV_P) 1269evpipe_init (EV_P)
841{ 1270{
842 if (!ev_is_active (&pipeev)) 1271 if (!ev_is_active (&pipe_w))
843 { 1272 {
844#if EV_USE_EVENTFD 1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
845 if ((evfd = eventfd (0, 0)) >= 0) 1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
846 { 1279 {
847 evpipe [0] = -1; 1280 evpipe [0] = -1;
848 fd_intern (evfd); 1281 fd_intern (evfd); /* doing it twice doesn't hurt */
849 ev_io_set (&pipeev, evfd, EV_READ); 1282 ev_io_set (&pipe_w, evfd, EV_READ);
850 } 1283 }
851 else 1284 else
852#endif 1285# endif
853 { 1286 {
854 while (pipe (evpipe)) 1287 while (pipe (evpipe))
855 syserr ("(libev) error creating signal/async pipe"); 1288 ev_syserr ("(libev) error creating signal/async pipe");
856 1289
857 fd_intern (evpipe [0]); 1290 fd_intern (evpipe [0]);
858 fd_intern (evpipe [1]); 1291 fd_intern (evpipe [1]);
859 ev_io_set (&pipeev, evpipe [0], EV_READ); 1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
860 } 1293 }
861 1294
862 ev_io_start (EV_A_ &pipeev); 1295 ev_io_start (EV_A_ &pipe_w);
863 ev_unref (EV_A); /* watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
864 } 1297 }
865} 1298}
866 1299
867void inline_size 1300inline_size void
868evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
869{ 1302{
870 if (!*flag) 1303 if (!*flag)
871 { 1304 {
872 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;
873 1307
874 *flag = 1; 1308 *flag = 1;
875 1309
876#if EV_USE_EVENTFD 1310#if EV_USE_EVENTFD
877 if (evfd >= 0) 1311 if (evfd >= 0)
… …
879 uint64_t counter = 1; 1313 uint64_t counter = 1;
880 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
881 } 1315 }
882 else 1316 else
883#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. */
884 write (evpipe [1], &old_errno, 1); 1323 write (evpipe [1], &dummy, 1);
885 1324
886 errno = old_errno; 1325 errno = old_errno;
887 } 1326 }
888} 1327}
889 1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
890static void 1331static void
891pipecb (EV_P_ ev_io *iow, int revents) 1332pipecb (EV_P_ ev_io *iow, int revents)
892{ 1333{
1334 int i;
1335
893#if EV_USE_EVENTFD 1336#if EV_USE_EVENTFD
894 if (evfd >= 0) 1337 if (evfd >= 0)
895 { 1338 {
896 uint64_t counter = 1; 1339 uint64_t counter;
897 read (evfd, &counter, sizeof (uint64_t)); 1340 read (evfd, &counter, sizeof (uint64_t));
898 } 1341 }
899 else 1342 else
900#endif 1343#endif
901 { 1344 {
902 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
903 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
904 } 1348 }
905 1349
906 if (gotsig && ev_is_default_loop (EV_A)) 1350 if (sig_pending)
907 { 1351 {
908 int signum; 1352 sig_pending = 0;
909 gotsig = 0;
910 1353
911 for (signum = signalmax; signum--; ) 1354 for (i = EV_NSIG - 1; i--; )
912 if (signals [signum].gotsig) 1355 if (expect_false (signals [i].pending))
913 ev_feed_signal_event (EV_A_ signum + 1); 1356 ev_feed_signal_event (EV_A_ i + 1);
914 } 1357 }
915 1358
916#if EV_ASYNC_ENABLE 1359#if EV_ASYNC_ENABLE
917 if (gotasync) 1360 if (async_pending)
918 { 1361 {
919 int i; 1362 async_pending = 0;
920 gotasync = 0;
921 1363
922 for (i = asynccnt; i--; ) 1364 for (i = asynccnt; i--; )
923 if (asyncs [i]->sent) 1365 if (asyncs [i]->sent)
924 { 1366 {
925 asyncs [i]->sent = 0; 1367 asyncs [i]->sent = 0;
… …
933 1375
934static void 1376static void
935ev_sighandler (int signum) 1377ev_sighandler (int signum)
936{ 1378{
937#if EV_MULTIPLICITY 1379#if EV_MULTIPLICITY
938 struct ev_loop *loop = &default_loop_struct; 1380 EV_P = signals [signum - 1].loop;
939#endif 1381#endif
940 1382
941#if _WIN32 1383#ifdef _WIN32
942 signal (signum, ev_sighandler); 1384 signal (signum, ev_sighandler);
943#endif 1385#endif
944 1386
945 signals [signum - 1].gotsig = 1; 1387 signals [signum - 1].pending = 1;
946 evpipe_write (EV_A_ &gotsig); 1388 evpipe_write (EV_A_ &sig_pending);
947} 1389}
948 1390
949void noinline 1391void noinline
950ev_feed_signal_event (EV_P_ int signum) 1392ev_feed_signal_event (EV_P_ int signum)
951{ 1393{
952 WL w; 1394 WL w;
953 1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
954#if EV_MULTIPLICITY 1401#if EV_MULTIPLICITY
955 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 */
956#endif 1403 /* or, likely more useful, feeding a signal nobody is waiting for */
957 1404
958 --signum; 1405 if (expect_false (signals [signum].loop != EV_A))
959
960 if (signum < 0 || signum >= signalmax)
961 return; 1406 return;
1407#endif
962 1408
963 signals [signum].gotsig = 0; 1409 signals [signum].pending = 0;
964 1410
965 for (w = signals [signum].head; w; w = w->next) 1411 for (w = signals [signum].head; w; w = w->next)
966 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
967} 1413}
968 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
969/*****************************************************************************/ 1437/*****************************************************************************/
970 1438
1439#if EV_CHILD_ENABLE
971static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
972
973#ifndef _WIN32
974 1441
975static ev_signal childev; 1442static ev_signal childev;
976 1443
977#ifndef WIFCONTINUED 1444#ifndef WIFCONTINUED
978# define WIFCONTINUED(status) 0 1445# define WIFCONTINUED(status) 0
979#endif 1446#endif
980 1447
981void inline_speed 1448/* handle a single child status event */
1449inline_speed void
982child_reap (EV_P_ int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
983{ 1451{
984 ev_child *w; 1452 ev_child *w;
985 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
986 1454
987 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)
988 { 1456 {
989 if ((w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
990 && (!traced || (w->flags & 1))) 1458 && (!traced || (w->flags & 1)))
991 { 1459 {
992 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 */
… …
999 1467
1000#ifndef WCONTINUED 1468#ifndef WCONTINUED
1001# define WCONTINUED 0 1469# define WCONTINUED 0
1002#endif 1470#endif
1003 1471
1472/* called on sigchld etc., calls waitpid */
1004static void 1473static void
1005childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
1006{ 1475{
1007 int pid, status; 1476 int pid, status;
1008 1477
… …
1016 /* 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 */
1017 /* 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 */
1018 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1019 1488
1020 child_reap (EV_A_ pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1021 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
1022 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 */
1023} 1492}
1024 1493
1025#endif 1494#endif
1026 1495
1027/*****************************************************************************/ 1496/*****************************************************************************/
1028 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1029#if EV_USE_PORT 1501#if EV_USE_PORT
1030# include "ev_port.c" 1502# include "ev_port.c"
1031#endif 1503#endif
1032#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1033# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
1089 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
1090 /* 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 */
1091 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
1092#endif 1564#endif
1093#ifdef __APPLE__ 1565#ifdef __APPLE__
1094 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
1095 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) */
1096#endif 1572#endif
1097 1573
1098 return flags; 1574 return flags;
1099} 1575}
1100 1576
… …
1102ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1103{ 1579{
1104 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1105 1581
1106 /* 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 */
1107 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1108 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1109 1585
1110 return flags; 1586 return flags;
1111} 1587}
1112 1588
1113unsigned int 1589unsigned int
1114ev_backend (EV_P) 1590ev_backend (EV_P)
1115{ 1591{
1116 return backend; 1592 return backend;
1117} 1593}
1118 1594
1595#if EV_FEATURE_API
1119unsigned int 1596unsigned int
1120ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1121{ 1598{
1122 return loop_count; 1599 return loop_count;
1123} 1600}
1124 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
1125void 1608void
1126ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1127{ 1610{
1128 io_blocktime = interval; 1611 io_blocktime = interval;
1129} 1612}
… …
1132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1133{ 1616{
1134 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1135} 1618}
1136 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 */
1137static void noinline 1645static void noinline
1138loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1139{ 1647{
1140 if (!backend) 1648 if (!backend)
1141 { 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
1142#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1143 { 1662 {
1144 struct timespec ts; 1663 struct timespec ts;
1664
1145 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1146 have_monotonic = 1; 1666 have_monotonic = 1;
1147 } 1667 }
1148#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"));
1149 1680
1150 ev_rt_now = ev_time (); 1681 ev_rt_now = ev_time ();
1151 mn_now = get_clock (); 1682 mn_now = get_clock ();
1152 now_floor = mn_now; 1683 now_floor = mn_now;
1153 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
1154 1688
1155 io_blocktime = 0.; 1689 io_blocktime = 0.;
1156 timeout_blocktime = 0.; 1690 timeout_blocktime = 0.;
1157 backend = 0; 1691 backend = 0;
1158 backend_fd = -1; 1692 backend_fd = -1;
1159 gotasync = 0; 1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1160#if EV_USE_INOTIFY 1697#if EV_USE_INOTIFY
1161 fs_fd = -2; 1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1162#endif 1699#endif
1163 1700#if EV_USE_SIGNALFD
1164 /* pid check not overridable via env */ 1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1165#ifndef _WIN32
1166 if (flags & EVFLAG_FORKCHECK)
1167 curpid = getpid ();
1168#endif 1702#endif
1169 1703
1170 if (!(flags & EVFLAG_NOENV)
1171 && !enable_secure ()
1172 && getenv ("LIBEV_FLAGS"))
1173 flags = atoi (getenv ("LIBEV_FLAGS"));
1174
1175 if (!(flags & 0x0000ffffUL)) 1704 if (!(flags & 0x0000ffffU))
1176 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1177 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1178#if EV_USE_PORT 1710#if EV_USE_PORT
1179 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1180#endif 1712#endif
1181#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1182 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1189#endif 1721#endif
1190#if EV_USE_SELECT 1722#if EV_USE_SELECT
1191 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1192#endif 1724#endif
1193 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1194 ev_init (&pipeev, pipecb); 1729 ev_init (&pipe_w, pipecb);
1195 ev_set_priority (&pipeev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1196 } 1732 }
1197} 1733}
1198 1734
1199static void noinline 1735/* free up a loop structure */
1736void
1200loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
1201{ 1738{
1202 int i; 1739 int i;
1203 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
1204 if (ev_is_active (&pipeev)) 1758 if (ev_is_active (&pipe_w))
1205 { 1759 {
1206 ev_ref (EV_A); /* signal watcher */ 1760 /*ev_ref (EV_A);*/
1207 ev_io_stop (EV_A_ &pipeev); 1761 /*ev_io_stop (EV_A_ &pipe_w);*/
1208 1762
1209#if EV_USE_EVENTFD 1763#if EV_USE_EVENTFD
1210 if (evfd >= 0) 1764 if (evfd >= 0)
1211 close (evfd); 1765 close (evfd);
1212#endif 1766#endif
1213 1767
1214 if (evpipe [0] >= 0) 1768 if (evpipe [0] >= 0)
1215 { 1769 {
1216 close (evpipe [0]); 1770 EV_WIN32_CLOSE_FD (evpipe [0]);
1217 close (evpipe [1]); 1771 EV_WIN32_CLOSE_FD (evpipe [1]);
1218 } 1772 }
1219 } 1773 }
1774
1775#if EV_USE_SIGNALFD
1776 if (ev_is_active (&sigfd_w))
1777 close (sigfd);
1778#endif
1220 1779
1221#if EV_USE_INOTIFY 1780#if EV_USE_INOTIFY
1222 if (fs_fd >= 0) 1781 if (fs_fd >= 0)
1223 close (fs_fd); 1782 close (fs_fd);
1224#endif 1783#endif
1225 1784
1226 if (backend_fd >= 0) 1785 if (backend_fd >= 0)
1227 close (backend_fd); 1786 close (backend_fd);
1228 1787
1788#if EV_USE_IOCP
1789 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1790#endif
1229#if EV_USE_PORT 1791#if EV_USE_PORT
1230 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1792 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1231#endif 1793#endif
1232#if EV_USE_KQUEUE 1794#if EV_USE_KQUEUE
1233 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1795 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1248#if EV_IDLE_ENABLE 1810#if EV_IDLE_ENABLE
1249 array_free (idle, [i]); 1811 array_free (idle, [i]);
1250#endif 1812#endif
1251 } 1813 }
1252 1814
1253 ev_free (anfds); anfdmax = 0; 1815 ev_free (anfds); anfds = 0; anfdmax = 0;
1254 1816
1255 /* 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);
1256 array_free (fdchange, EMPTY); 1819 array_free (fdchange, EMPTY);
1257 array_free (timer, EMPTY); 1820 array_free (timer, EMPTY);
1258#if EV_PERIODIC_ENABLE 1821#if EV_PERIODIC_ENABLE
1259 array_free (periodic, EMPTY); 1822 array_free (periodic, EMPTY);
1260#endif 1823#endif
1261#if EV_FORK_ENABLE 1824#if EV_FORK_ENABLE
1262 array_free (fork, EMPTY); 1825 array_free (fork, EMPTY);
1263#endif 1826#endif
1827#if EV_CLEANUP_ENABLE
1828 array_free (cleanup, EMPTY);
1829#endif
1264 array_free (prepare, EMPTY); 1830 array_free (prepare, EMPTY);
1265 array_free (check, EMPTY); 1831 array_free (check, EMPTY);
1266#if EV_ASYNC_ENABLE 1832#if EV_ASYNC_ENABLE
1267 array_free (async, EMPTY); 1833 array_free (async, EMPTY);
1268#endif 1834#endif
1269 1835
1270 backend = 0; 1836 backend = 0;
1271}
1272 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
1846}
1847
1848#if EV_USE_INOTIFY
1273void inline_size infy_fork (EV_P); 1849inline_size void infy_fork (EV_P);
1850#endif
1274 1851
1275void inline_size 1852inline_size void
1276loop_fork (EV_P) 1853loop_fork (EV_P)
1277{ 1854{
1278#if EV_USE_PORT 1855#if EV_USE_PORT
1279 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1856 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1280#endif 1857#endif
… …
1286#endif 1863#endif
1287#if EV_USE_INOTIFY 1864#if EV_USE_INOTIFY
1288 infy_fork (EV_A); 1865 infy_fork (EV_A);
1289#endif 1866#endif
1290 1867
1291 if (ev_is_active (&pipeev)) 1868 if (ev_is_active (&pipe_w))
1292 { 1869 {
1293 /* this "locks" the handlers against writing to the pipe */ 1870 /* this "locks" the handlers against writing to the pipe */
1294 /* while we modify the fd vars */ 1871 /* while we modify the fd vars */
1295 gotsig = 1; 1872 sig_pending = 1;
1296#if EV_ASYNC_ENABLE 1873#if EV_ASYNC_ENABLE
1297 gotasync = 1; 1874 async_pending = 1;
1298#endif 1875#endif
1299 1876
1300 ev_ref (EV_A); 1877 ev_ref (EV_A);
1301 ev_io_stop (EV_A_ &pipeev); 1878 ev_io_stop (EV_A_ &pipe_w);
1302 1879
1303#if EV_USE_EVENTFD 1880#if EV_USE_EVENTFD
1304 if (evfd >= 0) 1881 if (evfd >= 0)
1305 close (evfd); 1882 close (evfd);
1306#endif 1883#endif
1307 1884
1308 if (evpipe [0] >= 0) 1885 if (evpipe [0] >= 0)
1309 { 1886 {
1310 close (evpipe [0]); 1887 EV_WIN32_CLOSE_FD (evpipe [0]);
1311 close (evpipe [1]); 1888 EV_WIN32_CLOSE_FD (evpipe [1]);
1312 } 1889 }
1313 1890
1891#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1314 evpipe_init (EV_A); 1892 evpipe_init (EV_A);
1315 /* now iterate over everything, in case we missed something */ 1893 /* now iterate over everything, in case we missed something */
1316 pipecb (EV_A_ &pipeev, EV_READ); 1894 pipecb (EV_A_ &pipe_w, EV_READ);
1895#endif
1317 } 1896 }
1318 1897
1319 postfork = 0; 1898 postfork = 0;
1320} 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
1321 2031
1322#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
1323struct ev_loop * 2033struct ev_loop *
1324ev_loop_new (unsigned int flags)
1325{
1326 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1327
1328 memset (loop, 0, sizeof (struct ev_loop));
1329
1330 loop_init (EV_A_ flags);
1331
1332 if (ev_backend (EV_A))
1333 return loop;
1334
1335 return 0;
1336}
1337
1338void
1339ev_loop_destroy (EV_P)
1340{
1341 loop_destroy (EV_A);
1342 ev_free (loop);
1343}
1344
1345void
1346ev_loop_fork (EV_P)
1347{
1348 postfork = 1; /* must be in line with ev_default_fork */
1349}
1350
1351#endif
1352
1353#if EV_MULTIPLICITY
1354struct ev_loop *
1355ev_default_loop_init (unsigned int flags)
1356#else 2034#else
1357int 2035int
2036#endif
1358ev_default_loop (unsigned int flags) 2037ev_default_loop (unsigned int flags)
1359#endif
1360{ 2038{
1361 if (!ev_default_loop_ptr) 2039 if (!ev_default_loop_ptr)
1362 { 2040 {
1363#if EV_MULTIPLICITY 2041#if EV_MULTIPLICITY
1364 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2042 EV_P = ev_default_loop_ptr = &default_loop_struct;
1365#else 2043#else
1366 ev_default_loop_ptr = 1; 2044 ev_default_loop_ptr = 1;
1367#endif 2045#endif
1368 2046
1369 loop_init (EV_A_ flags); 2047 loop_init (EV_A_ flags);
1370 2048
1371 if (ev_backend (EV_A)) 2049 if (ev_backend (EV_A))
1372 { 2050 {
1373#ifndef _WIN32 2051#if EV_CHILD_ENABLE
1374 ev_signal_init (&childev, childcb, SIGCHLD); 2052 ev_signal_init (&childev, childcb, SIGCHLD);
1375 ev_set_priority (&childev, EV_MAXPRI); 2053 ev_set_priority (&childev, EV_MAXPRI);
1376 ev_signal_start (EV_A_ &childev); 2054 ev_signal_start (EV_A_ &childev);
1377 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2055 ev_unref (EV_A); /* child watcher should not keep loop alive */
1378#endif 2056#endif
… …
1383 2061
1384 return ev_default_loop_ptr; 2062 return ev_default_loop_ptr;
1385} 2063}
1386 2064
1387void 2065void
1388ev_default_destroy (void) 2066ev_loop_fork (EV_P)
1389{ 2067{
1390#if EV_MULTIPLICITY
1391 struct ev_loop *loop = ev_default_loop_ptr;
1392#endif
1393
1394#ifndef _WIN32
1395 ev_ref (EV_A); /* child watcher */
1396 ev_signal_stop (EV_A_ &childev);
1397#endif
1398
1399 loop_destroy (EV_A);
1400}
1401
1402void
1403ev_default_fork (void)
1404{
1405#if EV_MULTIPLICITY
1406 struct ev_loop *loop = ev_default_loop_ptr;
1407#endif
1408
1409 if (backend)
1410 postfork = 1; /* must be in line with ev_loop_fork */ 2068 postfork = 1; /* must be in line with ev_default_fork */
1411} 2069}
1412 2070
1413/*****************************************************************************/ 2071/*****************************************************************************/
1414 2072
1415void 2073void
1416ev_invoke (EV_P_ void *w, int revents) 2074ev_invoke (EV_P_ void *w, int revents)
1417{ 2075{
1418 EV_CB_INVOKE ((W)w, revents); 2076 EV_CB_INVOKE ((W)w, revents);
1419} 2077}
1420 2078
1421void inline_speed 2079unsigned int
1422call_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)
1423{ 2093{
1424 int pri; 2094 int pri;
1425 2095
1426 for (pri = NUMPRI; pri--; ) 2096 for (pri = NUMPRI; pri--; )
1427 while (pendingcnt [pri]) 2097 while (pendingcnt [pri])
1428 { 2098 {
1429 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2099 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1430 2100
1431 if (expect_true (p->w))
1432 {
1433 /*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 */
1434 2103
1435 p->w->pending = 0; 2104 p->w->pending = 0;
1436 EV_CB_INVOKE (p->w, p->events); 2105 EV_CB_INVOKE (p->w, p->events);
1437 } 2106 EV_FREQUENT_CHECK;
1438 } 2107 }
1439} 2108}
1440 2109
1441void inline_size
1442timers_reify (EV_P)
1443{
1444 while (timercnt && ((WT)timers [0])->at <= mn_now)
1445 {
1446 ev_timer *w = (ev_timer *)timers [0];
1447
1448 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1449
1450 /* first reschedule or stop timer */
1451 if (w->repeat)
1452 {
1453 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1454
1455 ((WT)w)->at += w->repeat;
1456 if (((WT)w)->at < mn_now)
1457 ((WT)w)->at = mn_now;
1458
1459 downheap (timers, timercnt, 0);
1460 }
1461 else
1462 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1463
1464 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1465 }
1466}
1467
1468#if EV_PERIODIC_ENABLE
1469void inline_size
1470periodics_reify (EV_P)
1471{
1472 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1473 {
1474 ev_periodic *w = (ev_periodic *)periodics [0];
1475
1476 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1477
1478 /* first reschedule or stop timer */
1479 if (w->reschedule_cb)
1480 {
1481 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1482 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1483 downheap (periodics, periodiccnt, 0);
1484 }
1485 else if (w->interval)
1486 {
1487 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1488 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1489 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1490 downheap (periodics, periodiccnt, 0);
1491 }
1492 else
1493 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1494
1495 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1496 }
1497}
1498
1499static void noinline
1500periodics_reschedule (EV_P)
1501{
1502 int i;
1503
1504 /* adjust periodics after time jump */
1505 for (i = 0; i < periodiccnt; ++i)
1506 {
1507 ev_periodic *w = (ev_periodic *)periodics [i];
1508
1509 if (w->reschedule_cb)
1510 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1511 else if (w->interval)
1512 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1513 }
1514
1515 /* now rebuild the heap */
1516 for (i = periodiccnt >> 1; i--; )
1517 downheap (periodics, periodiccnt, i);
1518}
1519#endif
1520
1521#if EV_IDLE_ENABLE 2110#if EV_IDLE_ENABLE
1522void inline_size 2111/* make idle watchers pending. this handles the "call-idle */
2112/* only when higher priorities are idle" logic */
2113inline_size void
1523idle_reify (EV_P) 2114idle_reify (EV_P)
1524{ 2115{
1525 if (expect_false (idleall)) 2116 if (expect_false (idleall))
1526 { 2117 {
1527 int pri; 2118 int pri;
… …
1539 } 2130 }
1540 } 2131 }
1541} 2132}
1542#endif 2133#endif
1543 2134
1544void inline_speed 2135/* make timers pending */
2136inline_size void
2137timers_reify (EV_P)
2138{
2139 EV_FREQUENT_CHECK;
2140
2141 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2142 {
2143 do
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
2156 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2157
2158 ANHE_at_cache (timers [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);
2166 }
2167 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2168
2169 feed_reverse_done (EV_A_ EV_TIMER);
2170 }
2171}
2172
2173#if EV_PERIODIC_ENABLE
2174/* make periodics pending */
2175inline_size void
2176periodics_reify (EV_P)
2177{
2178 EV_FREQUENT_CHECK;
2179
2180 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2181 {
2182 int feed_count = 0;
2183
2184 do
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 {
2193 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2194
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]);
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);
2224 }
2225 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2226
2227 feed_reverse_done (EV_A_ EV_PERIODIC);
2228 }
2229}
2230
2231/* simply recalculate all periodics */
2232/* TODO: maybe ensure that at least one event happens when jumping forward? */
2233static void noinline
2234periodics_reschedule (EV_P)
2235{
2236 int i;
2237
2238 /* adjust periodics after time jump */
2239 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2240 {
2241 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2242
2243 if (w->reschedule_cb)
2244 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2245 else if (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)
2262 {
2263 ANHE *he = timers + i + HEAP0;
2264 ANHE_w (*he)->at += adjust;
2265 ANHE_at_cache (*he);
2266 }
2267}
2268
2269/* fetch new monotonic and realtime times from the kernel */
2270/* also detect if there was a timejump, and act accordingly */
2271inline_speed void
1545time_update (EV_P_ ev_tstamp max_block) 2272time_update (EV_P_ ev_tstamp max_block)
1546{ 2273{
1547 int i;
1548
1549#if EV_USE_MONOTONIC 2274#if EV_USE_MONOTONIC
1550 if (expect_true (have_monotonic)) 2275 if (expect_true (have_monotonic))
1551 { 2276 {
2277 int i;
1552 ev_tstamp odiff = rtmn_diff; 2278 ev_tstamp odiff = rtmn_diff;
1553 2279
1554 mn_now = get_clock (); 2280 mn_now = get_clock ();
1555 2281
1556 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2282 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1574 */ 2300 */
1575 for (i = 4; --i; ) 2301 for (i = 4; --i; )
1576 { 2302 {
1577 rtmn_diff = ev_rt_now - mn_now; 2303 rtmn_diff = ev_rt_now - mn_now;
1578 2304
1579 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2305 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1580 return; /* all is well */ 2306 return; /* all is well */
1581 2307
1582 ev_rt_now = ev_time (); 2308 ev_rt_now = ev_time ();
1583 mn_now = get_clock (); 2309 mn_now = get_clock ();
1584 now_floor = mn_now; 2310 now_floor = mn_now;
1585 } 2311 }
1586 2312
2313 /* no timer adjustment, as the monotonic clock doesn't jump */
2314 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1587# if EV_PERIODIC_ENABLE 2315# if EV_PERIODIC_ENABLE
1588 periodics_reschedule (EV_A); 2316 periodics_reschedule (EV_A);
1589# endif 2317# endif
1590 /* no timer adjustment, as the monotonic clock doesn't jump */
1591 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1592 } 2318 }
1593 else 2319 else
1594#endif 2320#endif
1595 { 2321 {
1596 ev_rt_now = ev_time (); 2322 ev_rt_now = ev_time ();
1597 2323
1598 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))
1599 { 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);
1600#if EV_PERIODIC_ENABLE 2328#if EV_PERIODIC_ENABLE
1601 periodics_reschedule (EV_A); 2329 periodics_reschedule (EV_A);
1602#endif 2330#endif
1603 /* adjust timers. this is easy, as the offset is the same for all of them */
1604 for (i = 0; i < timercnt; ++i)
1605 ((WT)timers [i])->at += ev_rt_now - mn_now;
1606 } 2331 }
1607 2332
1608 mn_now = ev_rt_now; 2333 mn_now = ev_rt_now;
1609 } 2334 }
1610} 2335}
1611 2336
1612void 2337void
1613ev_ref (EV_P)
1614{
1615 ++activecnt;
1616}
1617
1618void
1619ev_unref (EV_P)
1620{
1621 --activecnt;
1622}
1623
1624static int loop_done;
1625
1626void
1627ev_loop (EV_P_ int flags) 2338ev_run (EV_P_ int flags)
1628{ 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
1629 loop_done = EVUNLOOP_CANCEL; 2346 loop_done = EVBREAK_CANCEL;
1630 2347
1631 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 */
1632 2349
1633 do 2350 do
1634 { 2351 {
2352#if EV_VERIFY >= 2
2353 ev_verify (EV_A);
2354#endif
2355
1635#ifndef _WIN32 2356#ifndef _WIN32
1636 if (expect_false (curpid)) /* penalise the forking check even more */ 2357 if (expect_false (curpid)) /* penalise the forking check even more */
1637 if (expect_false (getpid () != curpid)) 2358 if (expect_false (getpid () != curpid))
1638 { 2359 {
1639 curpid = getpid (); 2360 curpid = getpid ();
… …
1645 /* we might have forked, so queue fork handlers */ 2366 /* we might have forked, so queue fork handlers */
1646 if (expect_false (postfork)) 2367 if (expect_false (postfork))
1647 if (forkcnt) 2368 if (forkcnt)
1648 { 2369 {
1649 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2370 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1650 call_pending (EV_A); 2371 EV_INVOKE_PENDING;
1651 } 2372 }
1652#endif 2373#endif
1653 2374
2375#if EV_PREPARE_ENABLE
1654 /* queue prepare watchers (and execute them) */ 2376 /* queue prepare watchers (and execute them) */
1655 if (expect_false (preparecnt)) 2377 if (expect_false (preparecnt))
1656 { 2378 {
1657 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2379 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1658 call_pending (EV_A); 2380 EV_INVOKE_PENDING;
1659 } 2381 }
2382#endif
1660 2383
1661 if (expect_false (!activecnt)) 2384 if (expect_false (loop_done))
1662 break; 2385 break;
1663 2386
1664 /* we might have forked, so reify kernel state if necessary */ 2387 /* we might have forked, so reify kernel state if necessary */
1665 if (expect_false (postfork)) 2388 if (expect_false (postfork))
1666 loop_fork (EV_A); 2389 loop_fork (EV_A);
… …
1671 /* calculate blocking time */ 2394 /* calculate blocking time */
1672 { 2395 {
1673 ev_tstamp waittime = 0.; 2396 ev_tstamp waittime = 0.;
1674 ev_tstamp sleeptime = 0.; 2397 ev_tstamp sleeptime = 0.;
1675 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
1676 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2405 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1677 { 2406 {
1678 /* update time to cancel out callback processing overhead */
1679 time_update (EV_A_ 1e100);
1680
1681 waittime = MAX_BLOCKTIME; 2407 waittime = MAX_BLOCKTIME;
1682 2408
1683 if (timercnt) 2409 if (timercnt)
1684 { 2410 {
1685 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2411 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1686 if (waittime > to) waittime = to; 2412 if (waittime > to) waittime = to;
1687 } 2413 }
1688 2414
1689#if EV_PERIODIC_ENABLE 2415#if EV_PERIODIC_ENABLE
1690 if (periodiccnt) 2416 if (periodiccnt)
1691 { 2417 {
1692 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2418 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1693 if (waittime > to) waittime = to; 2419 if (waittime > to) waittime = to;
1694 } 2420 }
1695#endif 2421#endif
1696 2422
2423 /* don't let timeouts decrease the waittime below timeout_blocktime */
1697 if (expect_false (waittime < timeout_blocktime)) 2424 if (expect_false (waittime < timeout_blocktime))
1698 waittime = timeout_blocktime; 2425 waittime = timeout_blocktime;
1699 2426
1700 sleeptime = waittime - backend_fudge; 2427 /* extra check because io_blocktime is commonly 0 */
1701
1702 if (expect_true (sleeptime > io_blocktime)) 2428 if (expect_false (io_blocktime))
1703 sleeptime = io_blocktime;
1704
1705 if (sleeptime)
1706 { 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 {
1707 ev_sleep (sleeptime); 2437 ev_sleep (sleeptime);
1708 waittime -= sleeptime; 2438 waittime -= sleeptime;
2439 }
1709 } 2440 }
1710 } 2441 }
1711 2442
2443#if EV_FEATURE_API
1712 ++loop_count; 2444 ++loop_count;
2445#endif
2446 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1713 backend_poll (EV_A_ waittime); 2447 backend_poll (EV_A_ waittime);
2448 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1714 2449
1715 /* update ev_rt_now, do magic */ 2450 /* update ev_rt_now, do magic */
1716 time_update (EV_A_ waittime + sleeptime); 2451 time_update (EV_A_ waittime + sleeptime);
1717 } 2452 }
1718 2453
… …
1725#if EV_IDLE_ENABLE 2460#if EV_IDLE_ENABLE
1726 /* queue idle watchers unless other events are pending */ 2461 /* queue idle watchers unless other events are pending */
1727 idle_reify (EV_A); 2462 idle_reify (EV_A);
1728#endif 2463#endif
1729 2464
2465#if EV_CHECK_ENABLE
1730 /* queue check watchers, to be executed first */ 2466 /* queue check watchers, to be executed first */
1731 if (expect_false (checkcnt)) 2467 if (expect_false (checkcnt))
1732 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2468 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2469#endif
1733 2470
1734 call_pending (EV_A); 2471 EV_INVOKE_PENDING;
1735 } 2472 }
1736 while (expect_true ( 2473 while (expect_true (
1737 activecnt 2474 activecnt
1738 && !loop_done 2475 && !loop_done
1739 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2476 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1740 )); 2477 ));
1741 2478
1742 if (loop_done == EVUNLOOP_ONE) 2479 if (loop_done == EVBREAK_ONE)
1743 loop_done = EVUNLOOP_CANCEL; 2480 loop_done = EVBREAK_CANCEL;
1744}
1745 2481
2482#if EV_FEATURE_API
2483 --loop_depth;
2484#endif
2485}
2486
1746void 2487void
1747ev_unloop (EV_P_ int how) 2488ev_break (EV_P_ int how)
1748{ 2489{
1749 loop_done = how; 2490 loop_done = how;
1750} 2491}
1751 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
1752/*****************************************************************************/ 2530/*****************************************************************************/
2531/* singly-linked list management, used when the expected list length is short */
1753 2532
1754void inline_size 2533inline_size void
1755wlist_add (WL *head, WL elem) 2534wlist_add (WL *head, WL elem)
1756{ 2535{
1757 elem->next = *head; 2536 elem->next = *head;
1758 *head = elem; 2537 *head = elem;
1759} 2538}
1760 2539
1761void inline_size 2540inline_size void
1762wlist_del (WL *head, WL elem) 2541wlist_del (WL *head, WL elem)
1763{ 2542{
1764 while (*head) 2543 while (*head)
1765 { 2544 {
1766 if (*head == elem) 2545 if (expect_true (*head == elem))
1767 { 2546 {
1768 *head = elem->next; 2547 *head = elem->next;
1769 return; 2548 break;
1770 } 2549 }
1771 2550
1772 head = &(*head)->next; 2551 head = &(*head)->next;
1773 } 2552 }
1774} 2553}
1775 2554
1776void inline_speed 2555/* internal, faster, version of ev_clear_pending */
2556inline_speed void
1777clear_pending (EV_P_ W w) 2557clear_pending (EV_P_ W w)
1778{ 2558{
1779 if (w->pending) 2559 if (w->pending)
1780 { 2560 {
1781 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2561 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1782 w->pending = 0; 2562 w->pending = 0;
1783 } 2563 }
1784} 2564}
1785 2565
1786int 2566int
… …
1790 int pending = w_->pending; 2570 int pending = w_->pending;
1791 2571
1792 if (expect_true (pending)) 2572 if (expect_true (pending))
1793 { 2573 {
1794 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2574 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2575 p->w = (W)&pending_w;
1795 w_->pending = 0; 2576 w_->pending = 0;
1796 p->w = 0;
1797 return p->events; 2577 return p->events;
1798 } 2578 }
1799 else 2579 else
1800 return 0; 2580 return 0;
1801} 2581}
1802 2582
1803void inline_size 2583inline_size void
1804pri_adjust (EV_P_ W w) 2584pri_adjust (EV_P_ W w)
1805{ 2585{
1806 int pri = w->priority; 2586 int pri = ev_priority (w);
1807 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2587 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1808 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2588 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1809 w->priority = pri; 2589 ev_set_priority (w, pri);
1810} 2590}
1811 2591
1812void inline_speed 2592inline_speed void
1813ev_start (EV_P_ W w, int active) 2593ev_start (EV_P_ W w, int active)
1814{ 2594{
1815 pri_adjust (EV_A_ w); 2595 pri_adjust (EV_A_ w);
1816 w->active = active; 2596 w->active = active;
1817 ev_ref (EV_A); 2597 ev_ref (EV_A);
1818} 2598}
1819 2599
1820void inline_size 2600inline_size void
1821ev_stop (EV_P_ W w) 2601ev_stop (EV_P_ W w)
1822{ 2602{
1823 ev_unref (EV_A); 2603 ev_unref (EV_A);
1824 w->active = 0; 2604 w->active = 0;
1825} 2605}
… …
1832 int fd = w->fd; 2612 int fd = w->fd;
1833 2613
1834 if (expect_false (ev_is_active (w))) 2614 if (expect_false (ev_is_active (w)))
1835 return; 2615 return;
1836 2616
1837 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;
1838 2621
1839 ev_start (EV_A_ (W)w, 1); 2622 ev_start (EV_A_ (W)w, 1);
1840 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2623 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1841 wlist_add (&anfds[fd].head, (WL)w); 2624 wlist_add (&anfds[fd].head, (WL)w);
1842 2625
1843 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2626 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1844 w->events &= ~EV_IOFDSET; 2627 w->events &= ~EV__IOFDSET;
2628
2629 EV_FREQUENT_CHECK;
1845} 2630}
1846 2631
1847void noinline 2632void noinline
1848ev_io_stop (EV_P_ ev_io *w) 2633ev_io_stop (EV_P_ ev_io *w)
1849{ 2634{
1850 clear_pending (EV_A_ (W)w); 2635 clear_pending (EV_A_ (W)w);
1851 if (expect_false (!ev_is_active (w))) 2636 if (expect_false (!ev_is_active (w)))
1852 return; 2637 return;
1853 2638
1854 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;
1855 2642
1856 wlist_del (&anfds[w->fd].head, (WL)w); 2643 wlist_del (&anfds[w->fd].head, (WL)w);
1857 ev_stop (EV_A_ (W)w); 2644 ev_stop (EV_A_ (W)w);
1858 2645
1859 fd_change (EV_A_ w->fd, 1); 2646 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2647
2648 EV_FREQUENT_CHECK;
1860} 2649}
1861 2650
1862void noinline 2651void noinline
1863ev_timer_start (EV_P_ ev_timer *w) 2652ev_timer_start (EV_P_ ev_timer *w)
1864{ 2653{
1865 if (expect_false (ev_is_active (w))) 2654 if (expect_false (ev_is_active (w)))
1866 return; 2655 return;
1867 2656
1868 ((WT)w)->at += mn_now; 2657 ev_at (w) += mn_now;
1869 2658
1870 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.));
1871 2660
2661 EV_FREQUENT_CHECK;
2662
2663 ++timercnt;
1872 ev_start (EV_A_ (W)w, ++timercnt); 2664 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1873 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2665 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1874 timers [timercnt - 1] = (WT)w; 2666 ANHE_w (timers [ev_active (w)]) = (WT)w;
1875 upheap (timers, timercnt - 1); 2667 ANHE_at_cache (timers [ev_active (w)]);
2668 upheap (timers, ev_active (w));
1876 2669
2670 EV_FREQUENT_CHECK;
2671
1877 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2672 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1878} 2673}
1879 2674
1880void noinline 2675void noinline
1881ev_timer_stop (EV_P_ ev_timer *w) 2676ev_timer_stop (EV_P_ ev_timer *w)
1882{ 2677{
1883 clear_pending (EV_A_ (W)w); 2678 clear_pending (EV_A_ (W)w);
1884 if (expect_false (!ev_is_active (w))) 2679 if (expect_false (!ev_is_active (w)))
1885 return; 2680 return;
1886 2681
1887 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2682 EV_FREQUENT_CHECK;
1888 2683
1889 { 2684 {
1890 int active = ((W)w)->active; 2685 int active = ev_active (w);
1891 2686
2687 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2688
2689 --timercnt;
2690
1892 if (expect_true (--active < --timercnt)) 2691 if (expect_true (active < timercnt + HEAP0))
1893 { 2692 {
1894 timers [active] = timers [timercnt]; 2693 timers [active] = timers [timercnt + HEAP0];
1895 adjustheap (timers, timercnt, active); 2694 adjustheap (timers, timercnt, active);
1896 } 2695 }
1897 } 2696 }
1898 2697
1899 ((WT)w)->at -= mn_now; 2698 ev_at (w) -= mn_now;
1900 2699
1901 ev_stop (EV_A_ (W)w); 2700 ev_stop (EV_A_ (W)w);
2701
2702 EV_FREQUENT_CHECK;
1902} 2703}
1903 2704
1904void noinline 2705void noinline
1905ev_timer_again (EV_P_ ev_timer *w) 2706ev_timer_again (EV_P_ ev_timer *w)
1906{ 2707{
2708 EV_FREQUENT_CHECK;
2709
1907 if (ev_is_active (w)) 2710 if (ev_is_active (w))
1908 { 2711 {
1909 if (w->repeat) 2712 if (w->repeat)
1910 { 2713 {
1911 ((WT)w)->at = mn_now + w->repeat; 2714 ev_at (w) = mn_now + w->repeat;
2715 ANHE_at_cache (timers [ev_active (w)]);
1912 adjustheap (timers, timercnt, ((W)w)->active - 1); 2716 adjustheap (timers, timercnt, ev_active (w));
1913 } 2717 }
1914 else 2718 else
1915 ev_timer_stop (EV_A_ w); 2719 ev_timer_stop (EV_A_ w);
1916 } 2720 }
1917 else if (w->repeat) 2721 else if (w->repeat)
1918 { 2722 {
1919 w->at = w->repeat; 2723 ev_at (w) = w->repeat;
1920 ev_timer_start (EV_A_ w); 2724 ev_timer_start (EV_A_ w);
1921 } 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.);
1922} 2734}
1923 2735
1924#if EV_PERIODIC_ENABLE 2736#if EV_PERIODIC_ENABLE
1925void noinline 2737void noinline
1926ev_periodic_start (EV_P_ ev_periodic *w) 2738ev_periodic_start (EV_P_ ev_periodic *w)
1927{ 2739{
1928 if (expect_false (ev_is_active (w))) 2740 if (expect_false (ev_is_active (w)))
1929 return; 2741 return;
1930 2742
1931 if (w->reschedule_cb) 2743 if (w->reschedule_cb)
1932 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2744 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 2745 else if (w->interval)
1934 { 2746 {
1935 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.));
1936 /* 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 */
1937 ((WT)w)->at = 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;
1938 } 2750 }
1939 else 2751 else
1940 ((WT)w)->at = w->offset; 2752 ev_at (w) = w->offset;
1941 2753
2754 EV_FREQUENT_CHECK;
2755
2756 ++periodiccnt;
1942 ev_start (EV_A_ (W)w, ++periodiccnt); 2757 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1943 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2758 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1944 periodics [periodiccnt - 1] = (WT)w; 2759 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1945 upheap (periodics, periodiccnt - 1); 2760 ANHE_at_cache (periodics [ev_active (w)]);
2761 upheap (periodics, ev_active (w));
1946 2762
2763 EV_FREQUENT_CHECK;
2764
1947 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2765 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1948} 2766}
1949 2767
1950void noinline 2768void noinline
1951ev_periodic_stop (EV_P_ ev_periodic *w) 2769ev_periodic_stop (EV_P_ ev_periodic *w)
1952{ 2770{
1953 clear_pending (EV_A_ (W)w); 2771 clear_pending (EV_A_ (W)w);
1954 if (expect_false (!ev_is_active (w))) 2772 if (expect_false (!ev_is_active (w)))
1955 return; 2773 return;
1956 2774
1957 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2775 EV_FREQUENT_CHECK;
1958 2776
1959 { 2777 {
1960 int active = ((W)w)->active; 2778 int active = ev_active (w);
1961 2779
2780 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2781
2782 --periodiccnt;
2783
1962 if (expect_true (--active < --periodiccnt)) 2784 if (expect_true (active < periodiccnt + HEAP0))
1963 { 2785 {
1964 periodics [active] = periodics [periodiccnt]; 2786 periodics [active] = periodics [periodiccnt + HEAP0];
1965 adjustheap (periodics, periodiccnt, active); 2787 adjustheap (periodics, periodiccnt, active);
1966 } 2788 }
1967 } 2789 }
1968 2790
1969 ev_stop (EV_A_ (W)w); 2791 ev_stop (EV_A_ (W)w);
2792
2793 EV_FREQUENT_CHECK;
1970} 2794}
1971 2795
1972void noinline 2796void noinline
1973ev_periodic_again (EV_P_ ev_periodic *w) 2797ev_periodic_again (EV_P_ ev_periodic *w)
1974{ 2798{
… …
1980 2804
1981#ifndef SA_RESTART 2805#ifndef SA_RESTART
1982# define SA_RESTART 0 2806# define SA_RESTART 0
1983#endif 2807#endif
1984 2808
2809#if EV_SIGNAL_ENABLE
2810
1985void noinline 2811void noinline
1986ev_signal_start (EV_P_ ev_signal *w) 2812ev_signal_start (EV_P_ ev_signal *w)
1987{ 2813{
1988#if EV_MULTIPLICITY
1989 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1990#endif
1991 if (expect_false (ev_is_active (w))) 2814 if (expect_false (ev_is_active (w)))
1992 return; 2815 return;
1993 2816
1994 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));
1995 2818
1996 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));
1997 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)
1998 { 2830 {
1999#ifndef _WIN32 2831 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2000 sigset_t full, prev; 2832 if (sigfd < 0 && errno == EINVAL)
2001 sigfillset (&full); 2833 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2002 sigprocmask (SIG_SETMASK, &full, &prev);
2003#endif
2004 2834
2005 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2835 if (sigfd >= 0)
2836 {
2837 fd_intern (sigfd); /* doing it twice will not hurt */
2006 2838
2007#ifndef _WIN32 2839 sigemptyset (&sigfd_set);
2008 sigprocmask (SIG_SETMASK, &prev, 0); 2840
2009#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 }
2010 } 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
2011 2857
2012 ev_start (EV_A_ (W)w, 1); 2858 ev_start (EV_A_ (W)w, 1);
2013 wlist_add (&signals [w->signum - 1].head, (WL)w); 2859 wlist_add (&signals [w->signum - 1].head, (WL)w);
2014 2860
2015 if (!((WL)w)->next) 2861 if (!((WL)w)->next)
2862# if EV_USE_SIGNALFD
2863 if (sigfd < 0) /*TODO*/
2864# endif
2016 { 2865 {
2017#if _WIN32 2866# ifdef _WIN32
2867 evpipe_init (EV_A);
2868
2018 signal (w->signum, ev_sighandler); 2869 signal (w->signum, ev_sighandler);
2019#else 2870# else
2020 struct sigaction sa; 2871 struct sigaction sa;
2872
2873 evpipe_init (EV_A);
2874
2021 sa.sa_handler = ev_sighandler; 2875 sa.sa_handler = ev_sighandler;
2022 sigfillset (&sa.sa_mask); 2876 sigfillset (&sa.sa_mask);
2023 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 */
2024 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);
2025#endif 2883#endif
2026 } 2884 }
2885
2886 EV_FREQUENT_CHECK;
2027} 2887}
2028 2888
2029void noinline 2889void noinline
2030ev_signal_stop (EV_P_ ev_signal *w) 2890ev_signal_stop (EV_P_ ev_signal *w)
2031{ 2891{
2032 clear_pending (EV_A_ (W)w); 2892 clear_pending (EV_A_ (W)w);
2033 if (expect_false (!ev_is_active (w))) 2893 if (expect_false (!ev_is_active (w)))
2034 return; 2894 return;
2035 2895
2896 EV_FREQUENT_CHECK;
2897
2036 wlist_del (&signals [w->signum - 1].head, (WL)w); 2898 wlist_del (&signals [w->signum - 1].head, (WL)w);
2037 ev_stop (EV_A_ (W)w); 2899 ev_stop (EV_A_ (W)w);
2038 2900
2039 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
2040 signal (w->signum, SIG_DFL); 2920 signal (w->signum, SIG_DFL);
2921 }
2922
2923 EV_FREQUENT_CHECK;
2041} 2924}
2925
2926#endif
2927
2928#if EV_CHILD_ENABLE
2042 2929
2043void 2930void
2044ev_child_start (EV_P_ ev_child *w) 2931ev_child_start (EV_P_ ev_child *w)
2045{ 2932{
2046#if EV_MULTIPLICITY 2933#if EV_MULTIPLICITY
2047 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));
2048#endif 2935#endif
2049 if (expect_false (ev_is_active (w))) 2936 if (expect_false (ev_is_active (w)))
2050 return; 2937 return;
2051 2938
2939 EV_FREQUENT_CHECK;
2940
2052 ev_start (EV_A_ (W)w, 1); 2941 ev_start (EV_A_ (W)w, 1);
2053 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;
2054} 2945}
2055 2946
2056void 2947void
2057ev_child_stop (EV_P_ ev_child *w) 2948ev_child_stop (EV_P_ ev_child *w)
2058{ 2949{
2059 clear_pending (EV_A_ (W)w); 2950 clear_pending (EV_A_ (W)w);
2060 if (expect_false (!ev_is_active (w))) 2951 if (expect_false (!ev_is_active (w)))
2061 return; 2952 return;
2062 2953
2954 EV_FREQUENT_CHECK;
2955
2063 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2956 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2064 ev_stop (EV_A_ (W)w); 2957 ev_stop (EV_A_ (W)w);
2958
2959 EV_FREQUENT_CHECK;
2065} 2960}
2961
2962#endif
2066 2963
2067#if EV_STAT_ENABLE 2964#if EV_STAT_ENABLE
2068 2965
2069# ifdef _WIN32 2966# ifdef _WIN32
2070# undef lstat 2967# undef lstat
2071# define lstat(a,b) _stati64 (a,b) 2968# define lstat(a,b) _stati64 (a,b)
2072# endif 2969# endif
2073 2970
2074#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 */
2075#define MIN_STAT_INTERVAL 0.1074891 2973#define MIN_STAT_INTERVAL 0.1074891
2076 2974
2077static 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);
2078 2976
2079#if EV_USE_INOTIFY 2977#if EV_USE_INOTIFY
2080# 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)
2081 2981
2082static void noinline 2982static void noinline
2083infy_add (EV_P_ ev_stat *w) 2983infy_add (EV_P_ ev_stat *w)
2084{ 2984{
2085 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);
2086 2986
2087 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 */
2088 { 3007 }
2089 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;
2090 3012
2091 /* monitor some parent directory for speedup hints */ 3013 /* if path is not there, monitor some parent directory for speedup hints */
3014 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3015 /* but an efficiency issue only */
2092 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3016 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2093 { 3017 {
2094 char path [4096]; 3018 char path [4096];
2095 strcpy (path, w->path); 3019 strcpy (path, w->path);
2096 3020
… …
2099 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3023 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2100 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3024 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2101 3025
2102 char *pend = strrchr (path, '/'); 3026 char *pend = strrchr (path, '/');
2103 3027
2104 if (!pend) 3028 if (!pend || pend == path)
2105 break; /* whoops, no '/', complain to your admin */ 3029 break;
2106 3030
2107 *pend = 0; 3031 *pend = 0;
2108 w->wd = inotify_add_watch (fs_fd, path, mask); 3032 w->wd = inotify_add_watch (fs_fd, path, mask);
2109 } 3033 }
2110 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3034 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2111 } 3035 }
2112 } 3036 }
2113 else
2114 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2115 3037
2116 if (w->wd >= 0) 3038 if (w->wd >= 0)
2117 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);
2118} 3045}
2119 3046
2120static void noinline 3047static void noinline
2121infy_del (EV_P_ ev_stat *w) 3048infy_del (EV_P_ ev_stat *w)
2122{ 3049{
… …
2125 3052
2126 if (wd < 0) 3053 if (wd < 0)
2127 return; 3054 return;
2128 3055
2129 w->wd = -2; 3056 w->wd = -2;
2130 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3057 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2131 wlist_del (&fs_hash [slot].head, (WL)w); 3058 wlist_del (&fs_hash [slot].head, (WL)w);
2132 3059
2133 /* remove this watcher, if others are watching it, they will rearm */ 3060 /* remove this watcher, if others are watching it, they will rearm */
2134 inotify_rm_watch (fs_fd, wd); 3061 inotify_rm_watch (fs_fd, wd);
2135} 3062}
2136 3063
2137static void noinline 3064static void noinline
2138infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3065infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2139{ 3066{
2140 if (slot < 0) 3067 if (slot < 0)
2141 /* overflow, need to check for all hahs slots */ 3068 /* overflow, need to check for all hash slots */
2142 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3069 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2143 infy_wd (EV_A_ slot, wd, ev); 3070 infy_wd (EV_A_ slot, wd, ev);
2144 else 3071 else
2145 { 3072 {
2146 WL w_; 3073 WL w_;
2147 3074
2148 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3075 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2149 { 3076 {
2150 ev_stat *w = (ev_stat *)w_; 3077 ev_stat *w = (ev_stat *)w_;
2151 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 */
2152 3079
2153 if (w->wd == wd || wd == -1) 3080 if (w->wd == wd || wd == -1)
2154 { 3081 {
2155 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3082 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2156 { 3083 {
3084 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2157 w->wd = -1; 3085 w->wd = -1;
2158 infy_add (EV_A_ w); /* re-add, no matter what */ 3086 infy_add (EV_A_ w); /* re-add, no matter what */
2159 } 3087 }
2160 3088
2161 stat_timer_cb (EV_A_ &w->timer, 0); 3089 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2166 3094
2167static void 3095static void
2168infy_cb (EV_P_ ev_io *w, int revents) 3096infy_cb (EV_P_ ev_io *w, int revents)
2169{ 3097{
2170 char buf [EV_INOTIFY_BUFSIZE]; 3098 char buf [EV_INOTIFY_BUFSIZE];
2171 struct inotify_event *ev = (struct inotify_event *)buf;
2172 int ofs; 3099 int ofs;
2173 int len = read (fs_fd, buf, sizeof (buf)); 3100 int len = read (fs_fd, buf, sizeof (buf));
2174 3101
2175 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);
2176 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 }
2177} 3108}
2178 3109
2179void 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
2180infy_init (EV_P) 3134infy_init (EV_P)
2181{ 3135{
2182 if (fs_fd != -2) 3136 if (fs_fd != -2)
2183 return; 3137 return;
2184 3138
3139 fs_fd = -1;
3140
3141 ev_check_2625 (EV_A);
3142
2185 fs_fd = inotify_init (); 3143 fs_fd = infy_newfd ();
2186 3144
2187 if (fs_fd >= 0) 3145 if (fs_fd >= 0)
2188 { 3146 {
3147 fd_intern (fs_fd);
2189 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3148 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2190 ev_set_priority (&fs_w, EV_MAXPRI); 3149 ev_set_priority (&fs_w, EV_MAXPRI);
2191 ev_io_start (EV_A_ &fs_w); 3150 ev_io_start (EV_A_ &fs_w);
3151 ev_unref (EV_A);
2192 } 3152 }
2193} 3153}
2194 3154
2195void inline_size 3155inline_size void
2196infy_fork (EV_P) 3156infy_fork (EV_P)
2197{ 3157{
2198 int slot; 3158 int slot;
2199 3159
2200 if (fs_fd < 0) 3160 if (fs_fd < 0)
2201 return; 3161 return;
2202 3162
3163 ev_ref (EV_A);
3164 ev_io_stop (EV_A_ &fs_w);
2203 close (fs_fd); 3165 close (fs_fd);
2204 fs_fd = inotify_init (); 3166 fs_fd = infy_newfd ();
2205 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
2206 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3176 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2207 { 3177 {
2208 WL w_ = fs_hash [slot].head; 3178 WL w_ = fs_hash [slot].head;
2209 fs_hash [slot].head = 0; 3179 fs_hash [slot].head = 0;
2210 3180
2211 while (w_) 3181 while (w_)
… …
2216 w->wd = -1; 3186 w->wd = -1;
2217 3187
2218 if (fs_fd >= 0) 3188 if (fs_fd >= 0)
2219 infy_add (EV_A_ w); /* re-add, no matter what */ 3189 infy_add (EV_A_ w); /* re-add, no matter what */
2220 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);
2221 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 }
2222 } 3197 }
2223
2224 } 3198 }
2225} 3199}
2226 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)
2227#endif 3207#endif
2228 3208
2229void 3209void
2230ev_stat_stat (EV_P_ ev_stat *w) 3210ev_stat_stat (EV_P_ ev_stat *w)
2231{ 3211{
… …
2238static void noinline 3218static void noinline
2239stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3219stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2240{ 3220{
2241 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3221 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2242 3222
2243 /* we copy this here each the time so that */ 3223 ev_statdata prev = w->attr;
2244 /* prev has the old value when the callback gets invoked */
2245 w->prev = w->attr;
2246 ev_stat_stat (EV_A_ w); 3224 ev_stat_stat (EV_A_ w);
2247 3225
2248 /* 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 */
2249 if ( 3227 if (
2250 w->prev.st_dev != w->attr.st_dev 3228 prev.st_dev != w->attr.st_dev
2251 || w->prev.st_ino != w->attr.st_ino 3229 || prev.st_ino != w->attr.st_ino
2252 || w->prev.st_mode != w->attr.st_mode 3230 || prev.st_mode != w->attr.st_mode
2253 || w->prev.st_nlink != w->attr.st_nlink 3231 || prev.st_nlink != w->attr.st_nlink
2254 || w->prev.st_uid != w->attr.st_uid 3232 || prev.st_uid != w->attr.st_uid
2255 || w->prev.st_gid != w->attr.st_gid 3233 || prev.st_gid != w->attr.st_gid
2256 || w->prev.st_rdev != w->attr.st_rdev 3234 || prev.st_rdev != w->attr.st_rdev
2257 || w->prev.st_size != w->attr.st_size 3235 || prev.st_size != w->attr.st_size
2258 || w->prev.st_atime != w->attr.st_atime 3236 || prev.st_atime != w->attr.st_atime
2259 || w->prev.st_mtime != w->attr.st_mtime 3237 || prev.st_mtime != w->attr.st_mtime
2260 || w->prev.st_ctime != w->attr.st_ctime 3238 || prev.st_ctime != w->attr.st_ctime
2261 ) { 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
2262 #if EV_USE_INOTIFY 3245 #if EV_USE_INOTIFY
3246 if (fs_fd >= 0)
3247 {
2263 infy_del (EV_A_ w); 3248 infy_del (EV_A_ w);
2264 infy_add (EV_A_ w); 3249 infy_add (EV_A_ w);
2265 ev_stat_stat (EV_A_ w); /* avoid race... */ 3250 ev_stat_stat (EV_A_ w); /* avoid race... */
3251 }
2266 #endif 3252 #endif
2267 3253
2268 ev_feed_event (EV_A_ w, EV_STAT); 3254 ev_feed_event (EV_A_ w, EV_STAT);
2269 } 3255 }
2270} 3256}
… …
2273ev_stat_start (EV_P_ ev_stat *w) 3259ev_stat_start (EV_P_ ev_stat *w)
2274{ 3260{
2275 if (expect_false (ev_is_active (w))) 3261 if (expect_false (ev_is_active (w)))
2276 return; 3262 return;
2277 3263
2278 /* since we use memcmp, we need to clear any padding data etc. */
2279 memset (&w->prev, 0, sizeof (ev_statdata));
2280 memset (&w->attr, 0, sizeof (ev_statdata));
2281
2282 ev_stat_stat (EV_A_ w); 3264 ev_stat_stat (EV_A_ w);
2283 3265
3266 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2284 if (w->interval < MIN_STAT_INTERVAL) 3267 w->interval = MIN_STAT_INTERVAL;
2285 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2286 3268
2287 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);
2288 ev_set_priority (&w->timer, ev_priority (w)); 3270 ev_set_priority (&w->timer, ev_priority (w));
2289 3271
2290#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
2291 infy_init (EV_A); 3273 infy_init (EV_A);
2292 3274
2293 if (fs_fd >= 0) 3275 if (fs_fd >= 0)
2294 infy_add (EV_A_ w); 3276 infy_add (EV_A_ w);
2295 else 3277 else
2296#endif 3278#endif
3279 {
2297 ev_timer_start (EV_A_ &w->timer); 3280 ev_timer_again (EV_A_ &w->timer);
3281 ev_unref (EV_A);
3282 }
2298 3283
2299 ev_start (EV_A_ (W)w, 1); 3284 ev_start (EV_A_ (W)w, 1);
3285
3286 EV_FREQUENT_CHECK;
2300} 3287}
2301 3288
2302void 3289void
2303ev_stat_stop (EV_P_ ev_stat *w) 3290ev_stat_stop (EV_P_ ev_stat *w)
2304{ 3291{
2305 clear_pending (EV_A_ (W)w); 3292 clear_pending (EV_A_ (W)w);
2306 if (expect_false (!ev_is_active (w))) 3293 if (expect_false (!ev_is_active (w)))
2307 return; 3294 return;
2308 3295
3296 EV_FREQUENT_CHECK;
3297
2309#if EV_USE_INOTIFY 3298#if EV_USE_INOTIFY
2310 infy_del (EV_A_ w); 3299 infy_del (EV_A_ w);
2311#endif 3300#endif
3301
3302 if (ev_is_active (&w->timer))
3303 {
3304 ev_ref (EV_A);
2312 ev_timer_stop (EV_A_ &w->timer); 3305 ev_timer_stop (EV_A_ &w->timer);
3306 }
2313 3307
2314 ev_stop (EV_A_ (W)w); 3308 ev_stop (EV_A_ (W)w);
3309
3310 EV_FREQUENT_CHECK;
2315} 3311}
2316#endif 3312#endif
2317 3313
2318#if EV_IDLE_ENABLE 3314#if EV_IDLE_ENABLE
2319void 3315void
… …
2321{ 3317{
2322 if (expect_false (ev_is_active (w))) 3318 if (expect_false (ev_is_active (w)))
2323 return; 3319 return;
2324 3320
2325 pri_adjust (EV_A_ (W)w); 3321 pri_adjust (EV_A_ (W)w);
3322
3323 EV_FREQUENT_CHECK;
2326 3324
2327 { 3325 {
2328 int active = ++idlecnt [ABSPRI (w)]; 3326 int active = ++idlecnt [ABSPRI (w)];
2329 3327
2330 ++idleall; 3328 ++idleall;
2331 ev_start (EV_A_ (W)w, active); 3329 ev_start (EV_A_ (W)w, active);
2332 3330
2333 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);
2334 idles [ABSPRI (w)][active - 1] = w; 3332 idles [ABSPRI (w)][active - 1] = w;
2335 } 3333 }
3334
3335 EV_FREQUENT_CHECK;
2336} 3336}
2337 3337
2338void 3338void
2339ev_idle_stop (EV_P_ ev_idle *w) 3339ev_idle_stop (EV_P_ ev_idle *w)
2340{ 3340{
2341 clear_pending (EV_A_ (W)w); 3341 clear_pending (EV_A_ (W)w);
2342 if (expect_false (!ev_is_active (w))) 3342 if (expect_false (!ev_is_active (w)))
2343 return; 3343 return;
2344 3344
3345 EV_FREQUENT_CHECK;
3346
2345 { 3347 {
2346 int active = ((W)w)->active; 3348 int active = ev_active (w);
2347 3349
2348 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3350 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2349 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3351 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2350 3352
2351 ev_stop (EV_A_ (W)w); 3353 ev_stop (EV_A_ (W)w);
2352 --idleall; 3354 --idleall;
2353 } 3355 }
2354}
2355#endif
2356 3356
3357 EV_FREQUENT_CHECK;
3358}
3359#endif
3360
3361#if EV_PREPARE_ENABLE
2357void 3362void
2358ev_prepare_start (EV_P_ ev_prepare *w) 3363ev_prepare_start (EV_P_ ev_prepare *w)
2359{ 3364{
2360 if (expect_false (ev_is_active (w))) 3365 if (expect_false (ev_is_active (w)))
2361 return; 3366 return;
3367
3368 EV_FREQUENT_CHECK;
2362 3369
2363 ev_start (EV_A_ (W)w, ++preparecnt); 3370 ev_start (EV_A_ (W)w, ++preparecnt);
2364 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3371 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2365 prepares [preparecnt - 1] = w; 3372 prepares [preparecnt - 1] = w;
3373
3374 EV_FREQUENT_CHECK;
2366} 3375}
2367 3376
2368void 3377void
2369ev_prepare_stop (EV_P_ ev_prepare *w) 3378ev_prepare_stop (EV_P_ ev_prepare *w)
2370{ 3379{
2371 clear_pending (EV_A_ (W)w); 3380 clear_pending (EV_A_ (W)w);
2372 if (expect_false (!ev_is_active (w))) 3381 if (expect_false (!ev_is_active (w)))
2373 return; 3382 return;
2374 3383
3384 EV_FREQUENT_CHECK;
3385
2375 { 3386 {
2376 int active = ((W)w)->active; 3387 int active = ev_active (w);
3388
2377 prepares [active - 1] = prepares [--preparecnt]; 3389 prepares [active - 1] = prepares [--preparecnt];
2378 ((W)prepares [active - 1])->active = active; 3390 ev_active (prepares [active - 1]) = active;
2379 } 3391 }
2380 3392
2381 ev_stop (EV_A_ (W)w); 3393 ev_stop (EV_A_ (W)w);
2382}
2383 3394
3395 EV_FREQUENT_CHECK;
3396}
3397#endif
3398
3399#if EV_CHECK_ENABLE
2384void 3400void
2385ev_check_start (EV_P_ ev_check *w) 3401ev_check_start (EV_P_ ev_check *w)
2386{ 3402{
2387 if (expect_false (ev_is_active (w))) 3403 if (expect_false (ev_is_active (w)))
2388 return; 3404 return;
3405
3406 EV_FREQUENT_CHECK;
2389 3407
2390 ev_start (EV_A_ (W)w, ++checkcnt); 3408 ev_start (EV_A_ (W)w, ++checkcnt);
2391 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3409 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2392 checks [checkcnt - 1] = w; 3410 checks [checkcnt - 1] = w;
3411
3412 EV_FREQUENT_CHECK;
2393} 3413}
2394 3414
2395void 3415void
2396ev_check_stop (EV_P_ ev_check *w) 3416ev_check_stop (EV_P_ ev_check *w)
2397{ 3417{
2398 clear_pending (EV_A_ (W)w); 3418 clear_pending (EV_A_ (W)w);
2399 if (expect_false (!ev_is_active (w))) 3419 if (expect_false (!ev_is_active (w)))
2400 return; 3420 return;
2401 3421
3422 EV_FREQUENT_CHECK;
3423
2402 { 3424 {
2403 int active = ((W)w)->active; 3425 int active = ev_active (w);
3426
2404 checks [active - 1] = checks [--checkcnt]; 3427 checks [active - 1] = checks [--checkcnt];
2405 ((W)checks [active - 1])->active = active; 3428 ev_active (checks [active - 1]) = active;
2406 } 3429 }
2407 3430
2408 ev_stop (EV_A_ (W)w); 3431 ev_stop (EV_A_ (W)w);
3432
3433 EV_FREQUENT_CHECK;
2409} 3434}
3435#endif
2410 3436
2411#if EV_EMBED_ENABLE 3437#if EV_EMBED_ENABLE
2412void noinline 3438void noinline
2413ev_embed_sweep (EV_P_ ev_embed *w) 3439ev_embed_sweep (EV_P_ ev_embed *w)
2414{ 3440{
2415 ev_loop (w->other, EVLOOP_NONBLOCK); 3441 ev_run (w->other, EVRUN_NOWAIT);
2416} 3442}
2417 3443
2418static void 3444static void
2419embed_io_cb (EV_P_ ev_io *io, int revents) 3445embed_io_cb (EV_P_ ev_io *io, int revents)
2420{ 3446{
2421 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3447 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2422 3448
2423 if (ev_cb (w)) 3449 if (ev_cb (w))
2424 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3450 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2425 else 3451 else
2426 ev_loop (w->other, EVLOOP_NONBLOCK); 3452 ev_run (w->other, EVRUN_NOWAIT);
2427} 3453}
2428 3454
2429static void 3455static void
2430embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3456embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2431{ 3457{
2432 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3458 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2433 3459
2434 { 3460 {
2435 struct ev_loop *loop = w->other; 3461 EV_P = w->other;
2436 3462
2437 while (fdchangecnt) 3463 while (fdchangecnt)
2438 { 3464 {
2439 fd_reify (EV_A); 3465 fd_reify (EV_A);
2440 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3466 ev_run (EV_A_ EVRUN_NOWAIT);
2441 } 3467 }
2442 } 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);
2443} 3486}
2444 3487
2445#if 0 3488#if 0
2446static void 3489static void
2447embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3490embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2455{ 3498{
2456 if (expect_false (ev_is_active (w))) 3499 if (expect_false (ev_is_active (w)))
2457 return; 3500 return;
2458 3501
2459 { 3502 {
2460 struct ev_loop *loop = w->other; 3503 EV_P = w->other;
2461 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 ()));
2462 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);
2463 } 3506 }
3507
3508 EV_FREQUENT_CHECK;
2464 3509
2465 ev_set_priority (&w->io, ev_priority (w)); 3510 ev_set_priority (&w->io, ev_priority (w));
2466 ev_io_start (EV_A_ &w->io); 3511 ev_io_start (EV_A_ &w->io);
2467 3512
2468 ev_prepare_init (&w->prepare, embed_prepare_cb); 3513 ev_prepare_init (&w->prepare, embed_prepare_cb);
2469 ev_set_priority (&w->prepare, EV_MINPRI); 3514 ev_set_priority (&w->prepare, EV_MINPRI);
2470 ev_prepare_start (EV_A_ &w->prepare); 3515 ev_prepare_start (EV_A_ &w->prepare);
2471 3516
3517 ev_fork_init (&w->fork, embed_fork_cb);
3518 ev_fork_start (EV_A_ &w->fork);
3519
2472 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3520 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2473 3521
2474 ev_start (EV_A_ (W)w, 1); 3522 ev_start (EV_A_ (W)w, 1);
3523
3524 EV_FREQUENT_CHECK;
2475} 3525}
2476 3526
2477void 3527void
2478ev_embed_stop (EV_P_ ev_embed *w) 3528ev_embed_stop (EV_P_ ev_embed *w)
2479{ 3529{
2480 clear_pending (EV_A_ (W)w); 3530 clear_pending (EV_A_ (W)w);
2481 if (expect_false (!ev_is_active (w))) 3531 if (expect_false (!ev_is_active (w)))
2482 return; 3532 return;
2483 3533
3534 EV_FREQUENT_CHECK;
3535
2484 ev_io_stop (EV_A_ &w->io); 3536 ev_io_stop (EV_A_ &w->io);
2485 ev_prepare_stop (EV_A_ &w->prepare); 3537 ev_prepare_stop (EV_A_ &w->prepare);
3538 ev_fork_stop (EV_A_ &w->fork);
2486 3539
2487 ev_stop (EV_A_ (W)w); 3540 ev_stop (EV_A_ (W)w);
3541
3542 EV_FREQUENT_CHECK;
2488} 3543}
2489#endif 3544#endif
2490 3545
2491#if EV_FORK_ENABLE 3546#if EV_FORK_ENABLE
2492void 3547void
2493ev_fork_start (EV_P_ ev_fork *w) 3548ev_fork_start (EV_P_ ev_fork *w)
2494{ 3549{
2495 if (expect_false (ev_is_active (w))) 3550 if (expect_false (ev_is_active (w)))
2496 return; 3551 return;
3552
3553 EV_FREQUENT_CHECK;
2497 3554
2498 ev_start (EV_A_ (W)w, ++forkcnt); 3555 ev_start (EV_A_ (W)w, ++forkcnt);
2499 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3556 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2500 forks [forkcnt - 1] = w; 3557 forks [forkcnt - 1] = w;
3558
3559 EV_FREQUENT_CHECK;
2501} 3560}
2502 3561
2503void 3562void
2504ev_fork_stop (EV_P_ ev_fork *w) 3563ev_fork_stop (EV_P_ ev_fork *w)
2505{ 3564{
2506 clear_pending (EV_A_ (W)w); 3565 clear_pending (EV_A_ (W)w);
2507 if (expect_false (!ev_is_active (w))) 3566 if (expect_false (!ev_is_active (w)))
2508 return; 3567 return;
2509 3568
3569 EV_FREQUENT_CHECK;
3570
2510 { 3571 {
2511 int active = ((W)w)->active; 3572 int active = ev_active (w);
3573
2512 forks [active - 1] = forks [--forkcnt]; 3574 forks [active - 1] = forks [--forkcnt];
2513 ((W)forks [active - 1])->active = active; 3575 ev_active (forks [active - 1]) = active;
2514 } 3576 }
2515 3577
2516 ev_stop (EV_A_ (W)w); 3578 ev_stop (EV_A_ (W)w);
2517}
2518#endif
2519 3579
3580 EV_FREQUENT_CHECK;
3581}
3582#endif
3583
2520#if EV_ASYNC_ENABLE 3584#if EV_CLEANUP_ENABLE
2521void 3585void
2522ev_async_start (EV_P_ ev_async *w) 3586ev_cleanup_start (EV_P_ ev_cleanup *w)
2523{ 3587{
2524 if (expect_false (ev_is_active (w))) 3588 if (expect_false (ev_is_active (w)))
2525 return; 3589 return;
2526 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 /* cleanup watchers should never keep a refcount on the loop */
3598 ev_unref (EV_A);
3599 EV_FREQUENT_CHECK;
3600}
3601
3602void
3603ev_cleanup_stop (EV_P_ ev_cleanup *w)
3604{
3605 clear_pending (EV_A_ (W)w);
3606 if (expect_false (!ev_is_active (w)))
3607 return;
3608
3609 EV_FREQUENT_CHECK;
3610 ev_ref (EV_A);
3611
3612 {
3613 int active = ev_active (w);
3614
3615 cleanups [active - 1] = cleanups [--cleanupcnt];
3616 ev_active (cleanups [active - 1]) = active;
3617 }
3618
3619 ev_stop (EV_A_ (W)w);
3620
3621 EV_FREQUENT_CHECK;
3622}
3623#endif
3624
3625#if EV_ASYNC_ENABLE
3626void
3627ev_async_start (EV_P_ ev_async *w)
3628{
3629 if (expect_false (ev_is_active (w)))
3630 return;
3631
3632 w->sent = 0;
3633
2527 evpipe_init (EV_A); 3634 evpipe_init (EV_A);
3635
3636 EV_FREQUENT_CHECK;
2528 3637
2529 ev_start (EV_A_ (W)w, ++asynccnt); 3638 ev_start (EV_A_ (W)w, ++asynccnt);
2530 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3639 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2531 asyncs [asynccnt - 1] = w; 3640 asyncs [asynccnt - 1] = w;
3641
3642 EV_FREQUENT_CHECK;
2532} 3643}
2533 3644
2534void 3645void
2535ev_async_stop (EV_P_ ev_async *w) 3646ev_async_stop (EV_P_ ev_async *w)
2536{ 3647{
2537 clear_pending (EV_A_ (W)w); 3648 clear_pending (EV_A_ (W)w);
2538 if (expect_false (!ev_is_active (w))) 3649 if (expect_false (!ev_is_active (w)))
2539 return; 3650 return;
2540 3651
3652 EV_FREQUENT_CHECK;
3653
2541 { 3654 {
2542 int active = ((W)w)->active; 3655 int active = ev_active (w);
3656
2543 asyncs [active - 1] = asyncs [--asynccnt]; 3657 asyncs [active - 1] = asyncs [--asynccnt];
2544 ((W)asyncs [active - 1])->active = active; 3658 ev_active (asyncs [active - 1]) = active;
2545 } 3659 }
2546 3660
2547 ev_stop (EV_A_ (W)w); 3661 ev_stop (EV_A_ (W)w);
3662
3663 EV_FREQUENT_CHECK;
2548} 3664}
2549 3665
2550void 3666void
2551ev_async_send (EV_P_ ev_async *w) 3667ev_async_send (EV_P_ ev_async *w)
2552{ 3668{
2553 w->sent = 1; 3669 w->sent = 1;
2554 evpipe_write (EV_A_ &gotasync); 3670 evpipe_write (EV_A_ &async_pending);
2555} 3671}
2556#endif 3672#endif
2557 3673
2558/*****************************************************************************/ 3674/*****************************************************************************/
2559 3675
… …
2569once_cb (EV_P_ struct ev_once *once, int revents) 3685once_cb (EV_P_ struct ev_once *once, int revents)
2570{ 3686{
2571 void (*cb)(int revents, void *arg) = once->cb; 3687 void (*cb)(int revents, void *arg) = once->cb;
2572 void *arg = once->arg; 3688 void *arg = once->arg;
2573 3689
2574 ev_io_stop (EV_A_ &once->io); 3690 ev_io_stop (EV_A_ &once->io);
2575 ev_timer_stop (EV_A_ &once->to); 3691 ev_timer_stop (EV_A_ &once->to);
2576 ev_free (once); 3692 ev_free (once);
2577 3693
2578 cb (revents, arg); 3694 cb (revents, arg);
2579} 3695}
2580 3696
2581static void 3697static void
2582once_cb_io (EV_P_ ev_io *w, int revents) 3698once_cb_io (EV_P_ ev_io *w, int revents)
2583{ 3699{
2584 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3700 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3701
3702 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2585} 3703}
2586 3704
2587static void 3705static void
2588once_cb_to (EV_P_ ev_timer *w, int revents) 3706once_cb_to (EV_P_ ev_timer *w, int revents)
2589{ 3707{
2590 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3708 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3709
3710 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2591} 3711}
2592 3712
2593void 3713void
2594ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3714ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2595{ 3715{
2596 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3716 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2597 3717
2598 if (expect_false (!once)) 3718 if (expect_false (!once))
2599 { 3719 {
2600 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3720 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2601 return; 3721 return;
2602 } 3722 }
2603 3723
2604 once->cb = cb; 3724 once->cb = cb;
2605 once->arg = arg; 3725 once->arg = arg;
… …
2617 ev_timer_set (&once->to, timeout, 0.); 3737 ev_timer_set (&once->to, timeout, 0.);
2618 ev_timer_start (EV_A_ &once->to); 3738 ev_timer_start (EV_A_ &once->to);
2619 } 3739 }
2620} 3740}
2621 3741
3742/*****************************************************************************/
3743
3744#if EV_WALK_ENABLE
3745void
3746ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3747{
3748 int i, j;
3749 ev_watcher_list *wl, *wn;
3750
3751 if (types & (EV_IO | EV_EMBED))
3752 for (i = 0; i < anfdmax; ++i)
3753 for (wl = anfds [i].head; wl; )
3754 {
3755 wn = wl->next;
3756
3757#if EV_EMBED_ENABLE
3758 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3759 {
3760 if (types & EV_EMBED)
3761 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3762 }
3763 else
3764#endif
3765#if EV_USE_INOTIFY
3766 if (ev_cb ((ev_io *)wl) == infy_cb)
3767 ;
3768 else
3769#endif
3770 if ((ev_io *)wl != &pipe_w)
3771 if (types & EV_IO)
3772 cb (EV_A_ EV_IO, wl);
3773
3774 wl = wn;
3775 }
3776
3777 if (types & (EV_TIMER | EV_STAT))
3778 for (i = timercnt + HEAP0; i-- > HEAP0; )
3779#if EV_STAT_ENABLE
3780 /*TODO: timer is not always active*/
3781 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3782 {
3783 if (types & EV_STAT)
3784 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3785 }
3786 else
3787#endif
3788 if (types & EV_TIMER)
3789 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3790
3791#if EV_PERIODIC_ENABLE
3792 if (types & EV_PERIODIC)
3793 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3794 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3795#endif
3796
3797#if EV_IDLE_ENABLE
3798 if (types & EV_IDLE)
3799 for (j = NUMPRI; i--; )
3800 for (i = idlecnt [j]; i--; )
3801 cb (EV_A_ EV_IDLE, idles [j][i]);
3802#endif
3803
3804#if EV_FORK_ENABLE
3805 if (types & EV_FORK)
3806 for (i = forkcnt; i--; )
3807 if (ev_cb (forks [i]) != embed_fork_cb)
3808 cb (EV_A_ EV_FORK, forks [i]);
3809#endif
3810
3811#if EV_ASYNC_ENABLE
3812 if (types & EV_ASYNC)
3813 for (i = asynccnt; i--; )
3814 cb (EV_A_ EV_ASYNC, asyncs [i]);
3815#endif
3816
3817#if EV_PREPARE_ENABLE
3818 if (types & EV_PREPARE)
3819 for (i = preparecnt; i--; )
3820# if EV_EMBED_ENABLE
3821 if (ev_cb (prepares [i]) != embed_prepare_cb)
3822# endif
3823 cb (EV_A_ EV_PREPARE, prepares [i]);
3824#endif
3825
3826#if EV_CHECK_ENABLE
3827 if (types & EV_CHECK)
3828 for (i = checkcnt; i--; )
3829 cb (EV_A_ EV_CHECK, checks [i]);
3830#endif
3831
3832#if EV_SIGNAL_ENABLE
3833 if (types & EV_SIGNAL)
3834 for (i = 0; i < EV_NSIG - 1; ++i)
3835 for (wl = signals [i].head; wl; )
3836 {
3837 wn = wl->next;
3838 cb (EV_A_ EV_SIGNAL, wl);
3839 wl = wn;
3840 }
3841#endif
3842
3843#if EV_CHILD_ENABLE
3844 if (types & EV_CHILD)
3845 for (i = (EV_PID_HASHSIZE); i--; )
3846 for (wl = childs [i]; wl; )
3847 {
3848 wn = wl->next;
3849 cb (EV_A_ EV_CHILD, wl);
3850 wl = wn;
3851 }
3852#endif
3853/* EV_STAT 0x00001000 /* stat data changed */
3854/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3855}
3856#endif
3857
2622#if EV_MULTIPLICITY 3858#if EV_MULTIPLICITY
2623 #include "ev_wrap.h" 3859 #include "ev_wrap.h"
2624#endif 3860#endif
2625 3861
2626#ifdef __cplusplus 3862EV_CPP(})
2627}
2628#endif
2629 3863

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