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Comparing libev/ev.c (file contents):
Revision 1.247 by root, Wed May 21 21:22:10 2008 UTC vs.
Revision 1.371 by root, Mon Feb 7 21:45:32 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
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
240#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
241# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
242#endif 337#endif
243 338
244#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
245# define EV_HEAP_CACHE_AT !EV_MINIMAL 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
246#endif 355#endif
247 356
248/* 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
249 364
250#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
251# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
252# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
253#endif 368#endif
… …
261# undef EV_USE_INOTIFY 376# undef EV_USE_INOTIFY
262# define EV_USE_INOTIFY 0 377# define EV_USE_INOTIFY 0
263#endif 378#endif
264 379
265#if !EV_USE_NANOSLEEP 380#if !EV_USE_NANOSLEEP
266# ifndef _WIN32 381/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux)
267# include <sys/select.h> 383# include <sys/select.h>
268# endif 384# endif
269#endif 385#endif
270 386
271#if EV_USE_INOTIFY 387#if EV_USE_INOTIFY
388# include <sys/statfs.h>
272# include <sys/inotify.h> 389# include <sys/inotify.h>
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0
394# endif
273#endif 395#endif
274 396
275#if EV_SELECT_IS_WINSOCKET 397#if EV_SELECT_IS_WINSOCKET
276# include <winsock.h> 398# include <winsock.h>
277#endif 399#endif
278 400
279#if EV_USE_EVENTFD 401#if EV_USE_EVENTFD
280/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
281# include <stdint.h> 403# include <stdint.h>
282# ifdef __cplusplus 404# ifndef EFD_NONBLOCK
283extern "C" { 405# define EFD_NONBLOCK O_NONBLOCK
284# endif 406# endif
285int eventfd (unsigned int initval, int flags); 407# ifndef EFD_CLOEXEC
286# ifdef __cplusplus 408# ifdef O_CLOEXEC
287} 409# define EFD_CLOEXEC O_CLOEXEC
410# else
411# define EFD_CLOEXEC 02000000
412# endif
288# endif 413# endif
414EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
415#endif
416
417#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h>
420# ifndef SFD_NONBLOCK
421# define SFD_NONBLOCK O_NONBLOCK
422# endif
423# ifndef SFD_CLOEXEC
424# ifdef O_CLOEXEC
425# define SFD_CLOEXEC O_CLOEXEC
426# else
427# define SFD_CLOEXEC 02000000
428# endif
429# endif
430EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
431
432struct signalfd_siginfo
433{
434 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)];
436};
289#endif 437#endif
290 438
291/**/ 439/**/
440
441#if EV_VERIFY >= 3
442# define EV_FREQUENT_CHECK ev_verify (EV_A)
443#else
444# define EV_FREQUENT_CHECK do { } while (0)
445#endif
292 446
293/* 447/*
294 * This is used to avoid floating point rounding problems. 448 * This is used to avoid floating point rounding problems.
295 * It is added to ev_rt_now when scheduling periodics 449 * It is added to ev_rt_now when scheduling periodics
296 * to ensure progress, time-wise, even when rounding 450 * to ensure progress, time-wise, even when rounding
… …
300 */ 454 */
301#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
302 456
303#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
304#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
305/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 459
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
306 462
307#if __GNUC__ >= 4 463#if __GNUC__ >= 4
308# define expect(expr,value) __builtin_expect ((expr),(value)) 464# define expect(expr,value) __builtin_expect ((expr),(value))
309# define noinline __attribute__ ((noinline)) 465# define noinline __attribute__ ((noinline))
310#else 466#else
… …
317 473
318#define expect_false(expr) expect ((expr) != 0, 0) 474#define expect_false(expr) expect ((expr) != 0, 0)
319#define expect_true(expr) expect ((expr) != 0, 1) 475#define expect_true(expr) expect ((expr) != 0, 1)
320#define inline_size static inline 476#define inline_size static inline
321 477
322#if EV_MINIMAL 478#if EV_FEATURE_CODE
479# define inline_speed static inline
480#else
323# define inline_speed static noinline 481# define inline_speed static noinline
482#endif
483
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485
486#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0)
324#else 488#else
325# define inline_speed static inline
326#endif
327
328#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
329#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif
330 491
331#define EMPTY /* required for microsofts broken pseudo-c compiler */ 492#define EMPTY /* required for microsofts broken pseudo-c compiler */
332#define EMPTY2(a,b) /* used to suppress some warnings */ 493#define EMPTY2(a,b) /* used to suppress some warnings */
333 494
334typedef ev_watcher *W; 495typedef ev_watcher *W;
… …
336typedef ev_watcher_time *WT; 497typedef ev_watcher_time *WT;
337 498
338#define ev_active(w) ((W)(w))->active 499#define ev_active(w) ((W)(w))->active
339#define ev_at(w) ((WT)(w))->at 500#define ev_at(w) ((WT)(w))->at
340 501
502#if EV_USE_REALTIME
503/* sig_atomic_t is used to avoid per-thread variables or locking but still */
504/* giving it a reasonably high chance of working on typical architectures */
505static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
506#endif
507
341#if EV_USE_MONOTONIC 508#if EV_USE_MONOTONIC
342/* sig_atomic_t is used to avoid per-thread variables or locking but still */
343/* giving it a reasonably high chance of working on typical architetcures */
344static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 509static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
510#endif
511
512#ifndef EV_FD_TO_WIN32_HANDLE
513# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
514#endif
515#ifndef EV_WIN32_HANDLE_TO_FD
516# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
517#endif
518#ifndef EV_WIN32_CLOSE_FD
519# define EV_WIN32_CLOSE_FD(fd) close (fd)
345#endif 520#endif
346 521
347#ifdef _WIN32 522#ifdef _WIN32
348# include "ev_win32.c" 523# include "ev_win32.c"
349#endif 524#endif
350 525
351/*****************************************************************************/ 526/*****************************************************************************/
352 527
528#ifdef __linux
529# include <sys/utsname.h>
530#endif
531
532static unsigned int noinline
533ev_linux_version (void)
534{
535#ifdef __linux
536 unsigned int v = 0;
537 struct utsname buf;
538 int i;
539 char *p = buf.release;
540
541 if (uname (&buf))
542 return 0;
543
544 for (i = 3+1; --i; )
545 {
546 unsigned int c = 0;
547
548 for (;;)
549 {
550 if (*p >= '0' && *p <= '9')
551 c = c * 10 + *p++ - '0';
552 else
553 {
554 p += *p == '.';
555 break;
556 }
557 }
558
559 v = (v << 8) | c;
560 }
561
562 return v;
563#else
564 return 0;
565#endif
566}
567
568/*****************************************************************************/
569
570#if EV_AVOID_STDIO
571static void noinline
572ev_printerr (const char *msg)
573{
574 write (STDERR_FILENO, msg, strlen (msg));
575}
576#endif
577
353static void (*syserr_cb)(const char *msg); 578static void (*syserr_cb)(const char *msg);
354 579
355void 580void
356ev_set_syserr_cb (void (*cb)(const char *msg)) 581ev_set_syserr_cb (void (*cb)(const char *msg))
357{ 582{
358 syserr_cb = cb; 583 syserr_cb = cb;
359} 584}
360 585
361static void noinline 586static void noinline
362syserr (const char *msg) 587ev_syserr (const char *msg)
363{ 588{
364 if (!msg) 589 if (!msg)
365 msg = "(libev) system error"; 590 msg = "(libev) system error";
366 591
367 if (syserr_cb) 592 if (syserr_cb)
368 syserr_cb (msg); 593 syserr_cb (msg);
369 else 594 else
370 { 595 {
596#if EV_AVOID_STDIO
597 ev_printerr (msg);
598 ev_printerr (": ");
599 ev_printerr (strerror (errno));
600 ev_printerr ("\n");
601#else
371 perror (msg); 602 perror (msg);
603#endif
372 abort (); 604 abort ();
373 } 605 }
374} 606}
375 607
376static void * 608static void *
377ev_realloc_emul (void *ptr, long size) 609ev_realloc_emul (void *ptr, long size)
378{ 610{
611#if __GLIBC__
612 return realloc (ptr, size);
613#else
379 /* some systems, notably openbsd and darwin, fail to properly 614 /* some systems, notably openbsd and darwin, fail to properly
380 * implement realloc (x, 0) (as required by both ansi c-98 and 615 * implement realloc (x, 0) (as required by both ansi c-89 and
381 * the single unix specification, so work around them here. 616 * the single unix specification, so work around them here.
382 */ 617 */
383 618
384 if (size) 619 if (size)
385 return realloc (ptr, size); 620 return realloc (ptr, size);
386 621
387 free (ptr); 622 free (ptr);
388 return 0; 623 return 0;
624#endif
389} 625}
390 626
391static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
392 628
393void 629void
… …
401{ 637{
402 ptr = alloc (ptr, size); 638 ptr = alloc (ptr, size);
403 639
404 if (!ptr && size) 640 if (!ptr && size)
405 { 641 {
642#if EV_AVOID_STDIO
643 ev_printerr ("(libev) memory allocation failed, aborting.\n");
644#else
406 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 645 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
646#endif
407 abort (); 647 abort ();
408 } 648 }
409 649
410 return ptr; 650 return ptr;
411} 651}
… …
413#define ev_malloc(size) ev_realloc (0, (size)) 653#define ev_malloc(size) ev_realloc (0, (size))
414#define ev_free(ptr) ev_realloc ((ptr), 0) 654#define ev_free(ptr) ev_realloc ((ptr), 0)
415 655
416/*****************************************************************************/ 656/*****************************************************************************/
417 657
658/* set in reify when reification needed */
659#define EV_ANFD_REIFY 1
660
661/* file descriptor info structure */
418typedef struct 662typedef struct
419{ 663{
420 WL head; 664 WL head;
421 unsigned char events; 665 unsigned char events; /* the events watched for */
666 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
667 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
422 unsigned char reify; 668 unsigned char unused;
669#if EV_USE_EPOLL
670 unsigned int egen; /* generation counter to counter epoll bugs */
671#endif
423#if EV_SELECT_IS_WINSOCKET 672#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
424 SOCKET handle; 673 SOCKET handle;
425#endif 674#endif
675#if EV_USE_IOCP
676 OVERLAPPED or, ow;
677#endif
426} ANFD; 678} ANFD;
427 679
680/* stores the pending event set for a given watcher */
428typedef struct 681typedef struct
429{ 682{
430 W w; 683 W w;
431 int events; 684 int events; /* the pending event set for the given watcher */
432} ANPENDING; 685} ANPENDING;
433 686
434#if EV_USE_INOTIFY 687#if EV_USE_INOTIFY
435/* hash table entry per inotify-id */ 688/* hash table entry per inotify-id */
436typedef struct 689typedef struct
… …
439} ANFS; 692} ANFS;
440#endif 693#endif
441 694
442/* Heap Entry */ 695/* Heap Entry */
443#if EV_HEAP_CACHE_AT 696#if EV_HEAP_CACHE_AT
697 /* a heap element */
444 typedef struct { 698 typedef struct {
445 ev_tstamp at; 699 ev_tstamp at;
446 WT w; 700 WT w;
447 } ANHE; 701 } ANHE;
448 702
449 #define ANHE_w(he) (he).w /* access watcher, read-write */ 703 #define ANHE_w(he) (he).w /* access watcher, read-write */
450 #define ANHE_at(he) (he).at /* access cached at, read-only */ 704 #define ANHE_at(he) (he).at /* access cached at, read-only */
451 #define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */ 705 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452#else 706#else
707 /* a heap element */
453 typedef WT ANHE; 708 typedef WT ANHE;
454 709
455 #define ANHE_w(he) (he) 710 #define ANHE_w(he) (he)
456 #define ANHE_at(he) (he)->at 711 #define ANHE_at(he) (he)->at
457 #define ANHE_at_set(he) 712 #define ANHE_at_cache(he)
458#endif 713#endif
459 714
460#if EV_MULTIPLICITY 715#if EV_MULTIPLICITY
461 716
462 struct ev_loop 717 struct ev_loop
… …
481 736
482 static int ev_default_loop_ptr; 737 static int ev_default_loop_ptr;
483 738
484#endif 739#endif
485 740
741#if EV_FEATURE_API
742# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
743# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
744# define EV_INVOKE_PENDING invoke_cb (EV_A)
745#else
746# define EV_RELEASE_CB (void)0
747# define EV_ACQUIRE_CB (void)0
748# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
749#endif
750
751#define EVBREAK_RECURSE 0x80
752
486/*****************************************************************************/ 753/*****************************************************************************/
487 754
755#ifndef EV_HAVE_EV_TIME
488ev_tstamp 756ev_tstamp
489ev_time (void) 757ev_time (void)
490{ 758{
491#if EV_USE_REALTIME 759#if EV_USE_REALTIME
760 if (expect_true (have_realtime))
761 {
492 struct timespec ts; 762 struct timespec ts;
493 clock_gettime (CLOCK_REALTIME, &ts); 763 clock_gettime (CLOCK_REALTIME, &ts);
494 return ts.tv_sec + ts.tv_nsec * 1e-9; 764 return ts.tv_sec + ts.tv_nsec * 1e-9;
495#else 765 }
766#endif
767
496 struct timeval tv; 768 struct timeval tv;
497 gettimeofday (&tv, 0); 769 gettimeofday (&tv, 0);
498 return tv.tv_sec + tv.tv_usec * 1e-6; 770 return tv.tv_sec + tv.tv_usec * 1e-6;
499#endif
500} 771}
772#endif
501 773
502ev_tstamp inline_size 774inline_size ev_tstamp
503get_clock (void) 775get_clock (void)
504{ 776{
505#if EV_USE_MONOTONIC 777#if EV_USE_MONOTONIC
506 if (expect_true (have_monotonic)) 778 if (expect_true (have_monotonic))
507 { 779 {
… …
528 if (delay > 0.) 800 if (delay > 0.)
529 { 801 {
530#if EV_USE_NANOSLEEP 802#if EV_USE_NANOSLEEP
531 struct timespec ts; 803 struct timespec ts;
532 804
533 ts.tv_sec = (time_t)delay; 805 EV_TS_SET (ts, delay);
534 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
535
536 nanosleep (&ts, 0); 806 nanosleep (&ts, 0);
537#elif defined(_WIN32) 807#elif defined(_WIN32)
538 Sleep ((unsigned long)(delay * 1e3)); 808 Sleep ((unsigned long)(delay * 1e3));
539#else 809#else
540 struct timeval tv; 810 struct timeval tv;
541 811
542 tv.tv_sec = (time_t)delay; 812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
543 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 813 /* something not guaranteed by newer posix versions, but guaranteed */
544 814 /* by older ones */
815 EV_TV_SET (tv, delay);
545 select (0, 0, 0, 0, &tv); 816 select (0, 0, 0, 0, &tv);
546#endif 817#endif
547 } 818 }
548} 819}
549 820
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
550/*****************************************************************************/ 829/*****************************************************************************/
551 830
552#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
553 832
554int inline_size 833/* find a suitable new size for the given array, */
834/* hopefully by rounding to a nice-to-malloc size */
835inline_size int
555array_nextsize (int elem, int cur, int cnt) 836array_nextsize (int elem, int cur, int cnt)
556{ 837{
557 int ncur = cur + 1; 838 int ncur = cur + 1;
558 839
559 do 840 do
… …
576array_realloc (int elem, void *base, int *cur, int cnt) 857array_realloc (int elem, void *base, int *cur, int cnt)
577{ 858{
578 *cur = array_nextsize (elem, *cur, cnt); 859 *cur = array_nextsize (elem, *cur, cnt);
579 return ev_realloc (base, elem * *cur); 860 return ev_realloc (base, elem * *cur);
580} 861}
862
863#define array_init_zero(base,count) \
864 memset ((void *)(base), 0, sizeof (*(base)) * (count))
581 865
582#define array_needsize(type,base,cur,cnt,init) \ 866#define array_needsize(type,base,cur,cnt,init) \
583 if (expect_false ((cnt) > (cur))) \ 867 if (expect_false ((cnt) > (cur))) \
584 { \ 868 { \
585 int ocur_ = (cur); \ 869 int ocur_ = (cur); \
… …
597 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 881 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598 } 882 }
599#endif 883#endif
600 884
601#define array_free(stem, idx) \ 885#define array_free(stem, idx) \
602 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 886 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
603 887
604/*****************************************************************************/ 888/*****************************************************************************/
889
890/* dummy callback for pending events */
891static void noinline
892pendingcb (EV_P_ ev_prepare *w, int revents)
893{
894}
605 895
606void noinline 896void noinline
607ev_feed_event (EV_P_ void *w, int revents) 897ev_feed_event (EV_P_ void *w, int revents)
608{ 898{
609 W w_ = (W)w; 899 W w_ = (W)w;
… …
618 pendings [pri][w_->pending - 1].w = w_; 908 pendings [pri][w_->pending - 1].w = w_;
619 pendings [pri][w_->pending - 1].events = revents; 909 pendings [pri][w_->pending - 1].events = revents;
620 } 910 }
621} 911}
622 912
623void inline_speed 913inline_speed void
914feed_reverse (EV_P_ W w)
915{
916 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
917 rfeeds [rfeedcnt++] = w;
918}
919
920inline_size void
921feed_reverse_done (EV_P_ int revents)
922{
923 do
924 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
925 while (rfeedcnt);
926}
927
928inline_speed void
624queue_events (EV_P_ W *events, int eventcnt, int type) 929queue_events (EV_P_ W *events, int eventcnt, int type)
625{ 930{
626 int i; 931 int i;
627 932
628 for (i = 0; i < eventcnt; ++i) 933 for (i = 0; i < eventcnt; ++i)
629 ev_feed_event (EV_A_ events [i], type); 934 ev_feed_event (EV_A_ events [i], type);
630} 935}
631 936
632/*****************************************************************************/ 937/*****************************************************************************/
633 938
634void inline_size 939inline_speed void
635anfds_init (ANFD *base, int count)
636{
637 while (count--)
638 {
639 base->head = 0;
640 base->events = EV_NONE;
641 base->reify = 0;
642
643 ++base;
644 }
645}
646
647void inline_speed
648fd_event (EV_P_ int fd, int revents) 940fd_event_nocheck (EV_P_ int fd, int revents)
649{ 941{
650 ANFD *anfd = anfds + fd; 942 ANFD *anfd = anfds + fd;
651 ev_io *w; 943 ev_io *w;
652 944
653 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 945 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
657 if (ev) 949 if (ev)
658 ev_feed_event (EV_A_ (W)w, ev); 950 ev_feed_event (EV_A_ (W)w, ev);
659 } 951 }
660} 952}
661 953
954/* do not submit kernel events for fds that have reify set */
955/* because that means they changed while we were polling for new events */
956inline_speed void
957fd_event (EV_P_ int fd, int revents)
958{
959 ANFD *anfd = anfds + fd;
960
961 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents);
963}
964
662void 965void
663ev_feed_fd_event (EV_P_ int fd, int revents) 966ev_feed_fd_event (EV_P_ int fd, int revents)
664{ 967{
665 if (fd >= 0 && fd < anfdmax) 968 if (fd >= 0 && fd < anfdmax)
666 fd_event (EV_A_ fd, revents); 969 fd_event_nocheck (EV_A_ fd, revents);
667} 970}
668 971
669void inline_size 972/* make sure the external fd watch events are in-sync */
973/* with the kernel/libev internal state */
974inline_size void
670fd_reify (EV_P) 975fd_reify (EV_P)
671{ 976{
672 int i; 977 int i;
978
979#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
980 for (i = 0; i < fdchangecnt; ++i)
981 {
982 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd;
984
985 if (anfd->reify & EV__IOFDSET)
986 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988
989 if (handle != anfd->handle)
990 {
991 unsigned long arg;
992
993 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
994
995 /* handle changed, but fd didn't - we need to do it in two steps */
996 backend_modify (EV_A_ fd, anfd->events, 0);
997 anfd->events = 0;
998 anfd->handle = handle;
999 }
1000 }
1001 }
1002#endif
673 1003
674 for (i = 0; i < fdchangecnt; ++i) 1004 for (i = 0; i < fdchangecnt; ++i)
675 { 1005 {
676 int fd = fdchanges [i]; 1006 int fd = fdchanges [i];
677 ANFD *anfd = anfds + fd; 1007 ANFD *anfd = anfds + fd;
678 ev_io *w; 1008 ev_io *w;
679 1009
680 unsigned char events = 0; 1010 unsigned char o_events = anfd->events;
1011 unsigned char o_reify = anfd->reify;
681 1012
682 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1013 anfd->reify = 0;
683 events |= (unsigned char)w->events;
684 1014
685#if EV_SELECT_IS_WINSOCKET 1015 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
686 if (events)
687 { 1016 {
688 unsigned long argp; 1017 anfd->events = 0;
689 #ifdef EV_FD_TO_WIN32_HANDLE 1018
690 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1019 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
691 #else 1020 anfd->events |= (unsigned char)w->events;
692 anfd->handle = _get_osfhandle (fd); 1021
693 #endif 1022 if (o_events != anfd->events)
694 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1023 o_reify = EV__IOFDSET; /* actually |= */
695 } 1024 }
696#endif
697 1025
698 { 1026 if (o_reify & EV__IOFDSET)
699 unsigned char o_events = anfd->events;
700 unsigned char o_reify = anfd->reify;
701
702 anfd->reify = 0;
703 anfd->events = events;
704
705 if (o_events != events || o_reify & EV_IOFDSET)
706 backend_modify (EV_A_ fd, o_events, events); 1027 backend_modify (EV_A_ fd, o_events, anfd->events);
707 }
708 } 1028 }
709 1029
710 fdchangecnt = 0; 1030 fdchangecnt = 0;
711} 1031}
712 1032
713void inline_size 1033/* something about the given fd changed */
1034inline_size void
714fd_change (EV_P_ int fd, int flags) 1035fd_change (EV_P_ int fd, int flags)
715{ 1036{
716 unsigned char reify = anfds [fd].reify; 1037 unsigned char reify = anfds [fd].reify;
717 anfds [fd].reify |= flags; 1038 anfds [fd].reify |= flags;
718 1039
… …
722 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1043 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
723 fdchanges [fdchangecnt - 1] = fd; 1044 fdchanges [fdchangecnt - 1] = fd;
724 } 1045 }
725} 1046}
726 1047
727void inline_speed 1048/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1049inline_speed void
728fd_kill (EV_P_ int fd) 1050fd_kill (EV_P_ int fd)
729{ 1051{
730 ev_io *w; 1052 ev_io *w;
731 1053
732 while ((w = (ev_io *)anfds [fd].head)) 1054 while ((w = (ev_io *)anfds [fd].head))
… …
734 ev_io_stop (EV_A_ w); 1056 ev_io_stop (EV_A_ w);
735 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1057 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
736 } 1058 }
737} 1059}
738 1060
739int inline_size 1061/* check whether the given fd is actually valid, for error recovery */
1062inline_size int
740fd_valid (int fd) 1063fd_valid (int fd)
741{ 1064{
742#ifdef _WIN32 1065#ifdef _WIN32
743 return _get_osfhandle (fd) != -1; 1066 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
744#else 1067#else
745 return fcntl (fd, F_GETFD) != -1; 1068 return fcntl (fd, F_GETFD) != -1;
746#endif 1069#endif
747} 1070}
748 1071
… …
752{ 1075{
753 int fd; 1076 int fd;
754 1077
755 for (fd = 0; fd < anfdmax; ++fd) 1078 for (fd = 0; fd < anfdmax; ++fd)
756 if (anfds [fd].events) 1079 if (anfds [fd].events)
757 if (!fd_valid (fd) == -1 && errno == EBADF) 1080 if (!fd_valid (fd) && errno == EBADF)
758 fd_kill (EV_A_ fd); 1081 fd_kill (EV_A_ fd);
759} 1082}
760 1083
761/* called on ENOMEM in select/poll to kill some fds and retry */ 1084/* called on ENOMEM in select/poll to kill some fds and retry */
762static void noinline 1085static void noinline
… …
766 1089
767 for (fd = anfdmax; fd--; ) 1090 for (fd = anfdmax; fd--; )
768 if (anfds [fd].events) 1091 if (anfds [fd].events)
769 { 1092 {
770 fd_kill (EV_A_ fd); 1093 fd_kill (EV_A_ fd);
771 return; 1094 break;
772 } 1095 }
773} 1096}
774 1097
775/* usually called after fork if backend needs to re-arm all fds from scratch */ 1098/* usually called after fork if backend needs to re-arm all fds from scratch */
776static void noinline 1099static void noinline
… …
780 1103
781 for (fd = 0; fd < anfdmax; ++fd) 1104 for (fd = 0; fd < anfdmax; ++fd)
782 if (anfds [fd].events) 1105 if (anfds [fd].events)
783 { 1106 {
784 anfds [fd].events = 0; 1107 anfds [fd].events = 0;
1108 anfds [fd].emask = 0;
785 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1109 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
786 } 1110 }
787} 1111}
788 1112
1113/* used to prepare libev internal fd's */
1114/* this is not fork-safe */
1115inline_speed void
1116fd_intern (int fd)
1117{
1118#ifdef _WIN32
1119 unsigned long arg = 1;
1120 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1121#else
1122 fcntl (fd, F_SETFD, FD_CLOEXEC);
1123 fcntl (fd, F_SETFL, O_NONBLOCK);
1124#endif
1125}
1126
789/*****************************************************************************/ 1127/*****************************************************************************/
790 1128
791/* 1129/*
792 * the heap functions want a real array index. array index 0 uis guaranteed to not 1130 * the heap functions want a real array index. array index 0 is guaranteed to not
793 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1131 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
794 * the branching factor of the d-tree. 1132 * the branching factor of the d-tree.
795 */ 1133 */
796 1134
797/* 1135/*
… …
803#if EV_USE_4HEAP 1141#if EV_USE_4HEAP
804 1142
805#define DHEAP 4 1143#define DHEAP 4
806#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1144#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1145#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808 1146#define UPHEAP_DONE(p,k) ((p) == (k))
809/* towards the root */
810void inline_speed
811upheap (ANHE *heap, int k)
812{
813 ANHE he = heap [k];
814
815 for (;;)
816 {
817 int p = HPARENT (k);
818
819 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
820 break;
821
822 heap [k] = heap [p];
823 ev_active (ANHE_w (heap [k])) = k;
824 k = p;
825 }
826
827 heap [k] = he;
828 ev_active (ANHE_w (he)) = k;
829}
830 1147
831/* away from the root */ 1148/* away from the root */
832void inline_speed 1149inline_speed void
833downheap (ANHE *heap, int N, int k) 1150downheap (ANHE *heap, int N, int k)
834{ 1151{
835 ANHE he = heap [k]; 1152 ANHE he = heap [k];
836 ANHE *E = heap + N + HEAP0; 1153 ANHE *E = heap + N + HEAP0;
837 1154
838 for (;;) 1155 for (;;)
839 { 1156 {
840 ev_tstamp minat; 1157 ev_tstamp minat;
841 ANHE *minpos; 1158 ANHE *minpos;
842 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1159 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
843 1160
844 // find minimum child 1161 /* find minimum child */
845 if (expect_true (pos + DHEAP - 1 < E)) 1162 if (expect_true (pos + DHEAP - 1 < E))
846 { 1163 {
847 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1164 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1165 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
849 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 1166 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
… …
870 1187
871 heap [k] = he; 1188 heap [k] = he;
872 ev_active (ANHE_w (he)) = k; 1189 ev_active (ANHE_w (he)) = k;
873} 1190}
874 1191
875#else // 4HEAP 1192#else /* 4HEAP */
876 1193
877#define HEAP0 1 1194#define HEAP0 1
878#define HPARENT(k) ((k) >> 1) 1195#define HPARENT(k) ((k) >> 1)
1196#define UPHEAP_DONE(p,k) (!(p))
879 1197
880/* towards the root */ 1198/* away from the root */
881void inline_speed 1199inline_speed void
882upheap (ANHE *heap, int k) 1200downheap (ANHE *heap, int N, int k)
883{ 1201{
884 ANHE he = heap [k]; 1202 ANHE he = heap [k];
885 1203
886 for (;;) 1204 for (;;)
887 { 1205 {
888 int p = HPARENT (k); 1206 int c = k << 1;
889 1207
890 /* maybe we could use a dummy element at heap [0]? */ 1208 if (c >= N + HEAP0)
891 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
892 break; 1209 break;
893 1210
894 heap [k] = heap [p];
895 ev_active (ANHE_w (heap [k])) = k;
896 k = p;
897 }
898
899 heap [k] = he;
900 ev_active (ANHE_w (heap [k])) = k;
901}
902
903/* away from the root */
904void inline_speed
905downheap (ANHE *heap, int N, int k)
906{
907 ANHE he = heap [k];
908
909 for (;;)
910 {
911 int c = k << 1;
912
913 if (c > N)
914 break;
915
916 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1211 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
917 ? 1 : 0; 1212 ? 1 : 0;
918 1213
919 if (ANHE_at (he) <= ANHE_at (heap [c])) 1214 if (ANHE_at (he) <= ANHE_at (heap [c]))
920 break; 1215 break;
921 1216
… …
928 heap [k] = he; 1223 heap [k] = he;
929 ev_active (ANHE_w (he)) = k; 1224 ev_active (ANHE_w (he)) = k;
930} 1225}
931#endif 1226#endif
932 1227
933void inline_size 1228/* towards the root */
1229inline_speed void
1230upheap (ANHE *heap, int k)
1231{
1232 ANHE he = heap [k];
1233
1234 for (;;)
1235 {
1236 int p = HPARENT (k);
1237
1238 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1239 break;
1240
1241 heap [k] = heap [p];
1242 ev_active (ANHE_w (heap [k])) = k;
1243 k = p;
1244 }
1245
1246 heap [k] = he;
1247 ev_active (ANHE_w (he)) = k;
1248}
1249
1250/* move an element suitably so it is in a correct place */
1251inline_size void
934adjustheap (ANHE *heap, int N, int k) 1252adjustheap (ANHE *heap, int N, int k)
935{ 1253{
936 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1254 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
937 upheap (heap, k); 1255 upheap (heap, k);
938 else 1256 else
939 downheap (heap, N, k); 1257 downheap (heap, N, k);
940} 1258}
941 1259
1260/* rebuild the heap: this function is used only once and executed rarely */
1261inline_size void
1262reheap (ANHE *heap, int N)
1263{
1264 int i;
1265
1266 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1267 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1268 for (i = 0; i < N; ++i)
1269 upheap (heap, i + HEAP0);
1270}
1271
942/*****************************************************************************/ 1272/*****************************************************************************/
943 1273
1274/* associate signal watchers to a signal signal */
944typedef struct 1275typedef struct
945{ 1276{
1277 EV_ATOMIC_T pending;
1278#if EV_MULTIPLICITY
1279 EV_P;
1280#endif
946 WL head; 1281 WL head;
947 EV_ATOMIC_T gotsig;
948} ANSIG; 1282} ANSIG;
949 1283
950static ANSIG *signals; 1284static ANSIG signals [EV_NSIG - 1];
951static int signalmax;
952
953static EV_ATOMIC_T gotsig;
954
955void inline_size
956signals_init (ANSIG *base, int count)
957{
958 while (count--)
959 {
960 base->head = 0;
961 base->gotsig = 0;
962
963 ++base;
964 }
965}
966 1285
967/*****************************************************************************/ 1286/*****************************************************************************/
968 1287
969void inline_speed 1288#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
970fd_intern (int fd)
971{
972#ifdef _WIN32
973 int arg = 1;
974 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
975#else
976 fcntl (fd, F_SETFD, FD_CLOEXEC);
977 fcntl (fd, F_SETFL, O_NONBLOCK);
978#endif
979}
980 1289
981static void noinline 1290static void noinline
982evpipe_init (EV_P) 1291evpipe_init (EV_P)
983{ 1292{
984 if (!ev_is_active (&pipeev)) 1293 if (!ev_is_active (&pipe_w))
985 { 1294 {
986#if EV_USE_EVENTFD 1295# if EV_USE_EVENTFD
1296 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1297 if (evfd < 0 && errno == EINVAL)
987 if ((evfd = eventfd (0, 0)) >= 0) 1298 evfd = eventfd (0, 0);
1299
1300 if (evfd >= 0)
988 { 1301 {
989 evpipe [0] = -1; 1302 evpipe [0] = -1;
990 fd_intern (evfd); 1303 fd_intern (evfd); /* doing it twice doesn't hurt */
991 ev_io_set (&pipeev, evfd, EV_READ); 1304 ev_io_set (&pipe_w, evfd, EV_READ);
992 } 1305 }
993 else 1306 else
994#endif 1307# endif
995 { 1308 {
996 while (pipe (evpipe)) 1309 while (pipe (evpipe))
997 syserr ("(libev) error creating signal/async pipe"); 1310 ev_syserr ("(libev) error creating signal/async pipe");
998 1311
999 fd_intern (evpipe [0]); 1312 fd_intern (evpipe [0]);
1000 fd_intern (evpipe [1]); 1313 fd_intern (evpipe [1]);
1001 ev_io_set (&pipeev, evpipe [0], EV_READ); 1314 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1002 } 1315 }
1003 1316
1004 ev_io_start (EV_A_ &pipeev); 1317 ev_io_start (EV_A_ &pipe_w);
1005 ev_unref (EV_A); /* watcher should not keep loop alive */ 1318 ev_unref (EV_A); /* watcher should not keep loop alive */
1006 } 1319 }
1007} 1320}
1008 1321
1009void inline_size 1322inline_size void
1010evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1323evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1011{ 1324{
1012 if (!*flag) 1325 if (!*flag)
1013 { 1326 {
1014 int old_errno = errno; /* save errno because write might clobber it */ 1327 int old_errno = errno; /* save errno because write might clobber it */
1328 char dummy;
1015 1329
1016 *flag = 1; 1330 *flag = 1;
1017 1331
1018#if EV_USE_EVENTFD 1332#if EV_USE_EVENTFD
1019 if (evfd >= 0) 1333 if (evfd >= 0)
… …
1021 uint64_t counter = 1; 1335 uint64_t counter = 1;
1022 write (evfd, &counter, sizeof (uint64_t)); 1336 write (evfd, &counter, sizeof (uint64_t));
1023 } 1337 }
1024 else 1338 else
1025#endif 1339#endif
1340 /* win32 people keep sending patches that change this write() to send() */
1341 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1342 /* so when you think this write should be a send instead, please find out */
1343 /* where your send() is from - it's definitely not the microsoft send, and */
1344 /* tell me. thank you. */
1026 write (evpipe [1], &old_errno, 1); 1345 write (evpipe [1], &dummy, 1);
1027 1346
1028 errno = old_errno; 1347 errno = old_errno;
1029 } 1348 }
1030} 1349}
1031 1350
1351/* called whenever the libev signal pipe */
1352/* got some events (signal, async) */
1032static void 1353static void
1033pipecb (EV_P_ ev_io *iow, int revents) 1354pipecb (EV_P_ ev_io *iow, int revents)
1034{ 1355{
1356 int i;
1357
1035#if EV_USE_EVENTFD 1358#if EV_USE_EVENTFD
1036 if (evfd >= 0) 1359 if (evfd >= 0)
1037 { 1360 {
1038 uint64_t counter; 1361 uint64_t counter;
1039 read (evfd, &counter, sizeof (uint64_t)); 1362 read (evfd, &counter, sizeof (uint64_t));
1040 } 1363 }
1041 else 1364 else
1042#endif 1365#endif
1043 { 1366 {
1044 char dummy; 1367 char dummy;
1368 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1045 read (evpipe [0], &dummy, 1); 1369 read (evpipe [0], &dummy, 1);
1046 } 1370 }
1047 1371
1048 if (gotsig && ev_is_default_loop (EV_A)) 1372#if EV_SIGNAL_ENABLE
1373 if (sig_pending)
1049 { 1374 {
1050 int signum; 1375 sig_pending = 0;
1051 gotsig = 0;
1052 1376
1053 for (signum = signalmax; signum--; ) 1377 for (i = EV_NSIG - 1; i--; )
1054 if (signals [signum].gotsig) 1378 if (expect_false (signals [i].pending))
1055 ev_feed_signal_event (EV_A_ signum + 1); 1379 ev_feed_signal_event (EV_A_ i + 1);
1056 } 1380 }
1381#endif
1057 1382
1058#if EV_ASYNC_ENABLE 1383#if EV_ASYNC_ENABLE
1059 if (gotasync) 1384 if (async_pending)
1060 { 1385 {
1061 int i; 1386 async_pending = 0;
1062 gotasync = 0;
1063 1387
1064 for (i = asynccnt; i--; ) 1388 for (i = asynccnt; i--; )
1065 if (asyncs [i]->sent) 1389 if (asyncs [i]->sent)
1066 { 1390 {
1067 asyncs [i]->sent = 0; 1391 asyncs [i]->sent = 0;
… …
1071#endif 1395#endif
1072} 1396}
1073 1397
1074/*****************************************************************************/ 1398/*****************************************************************************/
1075 1399
1400void
1401ev_feed_signal (int signum)
1402{
1403#if EV_MULTIPLICITY
1404 EV_P = signals [signum - 1].loop;
1405
1406 if (!EV_A)
1407 return;
1408#endif
1409
1410 signals [signum - 1].pending = 1;
1411 evpipe_write (EV_A_ &sig_pending);
1412}
1413
1076static void 1414static void
1077ev_sighandler (int signum) 1415ev_sighandler (int signum)
1078{ 1416{
1079#if EV_MULTIPLICITY
1080 struct ev_loop *loop = &default_loop_struct;
1081#endif
1082
1083#if _WIN32 1417#ifdef _WIN32
1084 signal (signum, ev_sighandler); 1418 signal (signum, ev_sighandler);
1085#endif 1419#endif
1086 1420
1087 signals [signum - 1].gotsig = 1; 1421 ev_feed_signal (signum);
1088 evpipe_write (EV_A_ &gotsig);
1089} 1422}
1090 1423
1091void noinline 1424void noinline
1092ev_feed_signal_event (EV_P_ int signum) 1425ev_feed_signal_event (EV_P_ int signum)
1093{ 1426{
1094 WL w; 1427 WL w;
1095 1428
1429 if (expect_false (signum <= 0 || signum > EV_NSIG))
1430 return;
1431
1432 --signum;
1433
1096#if EV_MULTIPLICITY 1434#if EV_MULTIPLICITY
1097 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1435 /* it is permissible to try to feed a signal to the wrong loop */
1098#endif 1436 /* or, likely more useful, feeding a signal nobody is waiting for */
1099 1437
1100 --signum; 1438 if (expect_false (signals [signum].loop != EV_A))
1101
1102 if (signum < 0 || signum >= signalmax)
1103 return; 1439 return;
1440#endif
1104 1441
1105 signals [signum].gotsig = 0; 1442 signals [signum].pending = 0;
1106 1443
1107 for (w = signals [signum].head; w; w = w->next) 1444 for (w = signals [signum].head; w; w = w->next)
1108 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1445 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1109} 1446}
1110 1447
1448#if EV_USE_SIGNALFD
1449static void
1450sigfdcb (EV_P_ ev_io *iow, int revents)
1451{
1452 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1453
1454 for (;;)
1455 {
1456 ssize_t res = read (sigfd, si, sizeof (si));
1457
1458 /* not ISO-C, as res might be -1, but works with SuS */
1459 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1460 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1461
1462 if (res < (ssize_t)sizeof (si))
1463 break;
1464 }
1465}
1466#endif
1467
1468#endif
1469
1111/*****************************************************************************/ 1470/*****************************************************************************/
1112 1471
1472#if EV_CHILD_ENABLE
1113static WL childs [EV_PID_HASHSIZE]; 1473static WL childs [EV_PID_HASHSIZE];
1114
1115#ifndef _WIN32
1116 1474
1117static ev_signal childev; 1475static ev_signal childev;
1118 1476
1119#ifndef WIFCONTINUED 1477#ifndef WIFCONTINUED
1120# define WIFCONTINUED(status) 0 1478# define WIFCONTINUED(status) 0
1121#endif 1479#endif
1122 1480
1123void inline_speed 1481/* handle a single child status event */
1482inline_speed void
1124child_reap (EV_P_ int chain, int pid, int status) 1483child_reap (EV_P_ int chain, int pid, int status)
1125{ 1484{
1126 ev_child *w; 1485 ev_child *w;
1127 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1486 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1128 1487
1129 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1488 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1130 { 1489 {
1131 if ((w->pid == pid || !w->pid) 1490 if ((w->pid == pid || !w->pid)
1132 && (!traced || (w->flags & 1))) 1491 && (!traced || (w->flags & 1)))
1133 { 1492 {
1134 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1493 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1141 1500
1142#ifndef WCONTINUED 1501#ifndef WCONTINUED
1143# define WCONTINUED 0 1502# define WCONTINUED 0
1144#endif 1503#endif
1145 1504
1505/* called on sigchld etc., calls waitpid */
1146static void 1506static void
1147childcb (EV_P_ ev_signal *sw, int revents) 1507childcb (EV_P_ ev_signal *sw, int revents)
1148{ 1508{
1149 int pid, status; 1509 int pid, status;
1150 1510
… …
1158 /* make sure we are called again until all children have been reaped */ 1518 /* make sure we are called again until all children have been reaped */
1159 /* we need to do it this way so that the callback gets called before we continue */ 1519 /* we need to do it this way so that the callback gets called before we continue */
1160 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1520 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1161 1521
1162 child_reap (EV_A_ pid, pid, status); 1522 child_reap (EV_A_ pid, pid, status);
1163 if (EV_PID_HASHSIZE > 1) 1523 if ((EV_PID_HASHSIZE) > 1)
1164 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1524 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1165} 1525}
1166 1526
1167#endif 1527#endif
1168 1528
1169/*****************************************************************************/ 1529/*****************************************************************************/
1170 1530
1531#if EV_USE_IOCP
1532# include "ev_iocp.c"
1533#endif
1171#if EV_USE_PORT 1534#if EV_USE_PORT
1172# include "ev_port.c" 1535# include "ev_port.c"
1173#endif 1536#endif
1174#if EV_USE_KQUEUE 1537#if EV_USE_KQUEUE
1175# include "ev_kqueue.c" 1538# include "ev_kqueue.c"
… …
1231 /* kqueue is borked on everything but netbsd apparently */ 1594 /* kqueue is borked on everything but netbsd apparently */
1232 /* it usually doesn't work correctly on anything but sockets and pipes */ 1595 /* it usually doesn't work correctly on anything but sockets and pipes */
1233 flags &= ~EVBACKEND_KQUEUE; 1596 flags &= ~EVBACKEND_KQUEUE;
1234#endif 1597#endif
1235#ifdef __APPLE__ 1598#ifdef __APPLE__
1236 // flags &= ~EVBACKEND_KQUEUE; for documentation 1599 /* only select works correctly on that "unix-certified" platform */
1237 flags &= ~EVBACKEND_POLL; 1600 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1601 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1602#endif
1603#ifdef __FreeBSD__
1604 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1238#endif 1605#endif
1239 1606
1240 return flags; 1607 return flags;
1241} 1608}
1242 1609
… …
1244ev_embeddable_backends (void) 1611ev_embeddable_backends (void)
1245{ 1612{
1246 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1247 1614
1248 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1615 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1249 /* please fix it and tell me how to detect the fix */ 1616 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1250 flags &= ~EVBACKEND_EPOLL; 1617 flags &= ~EVBACKEND_EPOLL;
1251 1618
1252 return flags; 1619 return flags;
1253} 1620}
1254 1621
1255unsigned int 1622unsigned int
1256ev_backend (EV_P) 1623ev_backend (EV_P)
1257{ 1624{
1258 return backend; 1625 return backend;
1259} 1626}
1260 1627
1628#if EV_FEATURE_API
1261unsigned int 1629unsigned int
1262ev_loop_count (EV_P) 1630ev_iteration (EV_P)
1263{ 1631{
1264 return loop_count; 1632 return loop_count;
1265} 1633}
1266 1634
1635unsigned int
1636ev_depth (EV_P)
1637{
1638 return loop_depth;
1639}
1640
1267void 1641void
1268ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1642ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1269{ 1643{
1270 io_blocktime = interval; 1644 io_blocktime = interval;
1271} 1645}
… …
1274ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1648ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1275{ 1649{
1276 timeout_blocktime = interval; 1650 timeout_blocktime = interval;
1277} 1651}
1278 1652
1653void
1654ev_set_userdata (EV_P_ void *data)
1655{
1656 userdata = data;
1657}
1658
1659void *
1660ev_userdata (EV_P)
1661{
1662 return userdata;
1663}
1664
1665void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1666{
1667 invoke_cb = invoke_pending_cb;
1668}
1669
1670void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1671{
1672 release_cb = release;
1673 acquire_cb = acquire;
1674}
1675#endif
1676
1677/* initialise a loop structure, must be zero-initialised */
1279static void noinline 1678static void noinline
1280loop_init (EV_P_ unsigned int flags) 1679loop_init (EV_P_ unsigned int flags)
1281{ 1680{
1282 if (!backend) 1681 if (!backend)
1283 { 1682 {
1683 origflags = flags;
1684
1685#if EV_USE_REALTIME
1686 if (!have_realtime)
1687 {
1688 struct timespec ts;
1689
1690 if (!clock_gettime (CLOCK_REALTIME, &ts))
1691 have_realtime = 1;
1692 }
1693#endif
1694
1284#if EV_USE_MONOTONIC 1695#if EV_USE_MONOTONIC
1696 if (!have_monotonic)
1285 { 1697 {
1286 struct timespec ts; 1698 struct timespec ts;
1699
1287 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1700 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1288 have_monotonic = 1; 1701 have_monotonic = 1;
1289 } 1702 }
1290#endif 1703#endif
1704
1705 /* pid check not overridable via env */
1706#ifndef _WIN32
1707 if (flags & EVFLAG_FORKCHECK)
1708 curpid = getpid ();
1709#endif
1710
1711 if (!(flags & EVFLAG_NOENV)
1712 && !enable_secure ()
1713 && getenv ("LIBEV_FLAGS"))
1714 flags = atoi (getenv ("LIBEV_FLAGS"));
1291 1715
1292 ev_rt_now = ev_time (); 1716 ev_rt_now = ev_time ();
1293 mn_now = get_clock (); 1717 mn_now = get_clock ();
1294 now_floor = mn_now; 1718 now_floor = mn_now;
1295 rtmn_diff = ev_rt_now - mn_now; 1719 rtmn_diff = ev_rt_now - mn_now;
1720#if EV_FEATURE_API
1721 invoke_cb = ev_invoke_pending;
1722#endif
1296 1723
1297 io_blocktime = 0.; 1724 io_blocktime = 0.;
1298 timeout_blocktime = 0.; 1725 timeout_blocktime = 0.;
1299 backend = 0; 1726 backend = 0;
1300 backend_fd = -1; 1727 backend_fd = -1;
1301 gotasync = 0; 1728 sig_pending = 0;
1729#if EV_ASYNC_ENABLE
1730 async_pending = 0;
1731#endif
1302#if EV_USE_INOTIFY 1732#if EV_USE_INOTIFY
1303 fs_fd = -2; 1733 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1304#endif 1734#endif
1305 1735#if EV_USE_SIGNALFD
1306 /* pid check not overridable via env */ 1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1307#ifndef _WIN32
1308 if (flags & EVFLAG_FORKCHECK)
1309 curpid = getpid ();
1310#endif 1737#endif
1311 1738
1312 if (!(flags & EVFLAG_NOENV) 1739 if (!(flags & EVBACKEND_MASK))
1313 && !enable_secure ()
1314 && getenv ("LIBEV_FLAGS"))
1315 flags = atoi (getenv ("LIBEV_FLAGS"));
1316
1317 if (!(flags & 0x0000ffffU))
1318 flags |= ev_recommended_backends (); 1740 flags |= ev_recommended_backends ();
1319 1741
1742#if EV_USE_IOCP
1743 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1744#endif
1320#if EV_USE_PORT 1745#if EV_USE_PORT
1321 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1746 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1322#endif 1747#endif
1323#if EV_USE_KQUEUE 1748#if EV_USE_KQUEUE
1324 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1749 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1331#endif 1756#endif
1332#if EV_USE_SELECT 1757#if EV_USE_SELECT
1333 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1758 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1334#endif 1759#endif
1335 1760
1761 ev_prepare_init (&pending_w, pendingcb);
1762
1763#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1336 ev_init (&pipeev, pipecb); 1764 ev_init (&pipe_w, pipecb);
1337 ev_set_priority (&pipeev, EV_MAXPRI); 1765 ev_set_priority (&pipe_w, EV_MAXPRI);
1766#endif
1338 } 1767 }
1339} 1768}
1340 1769
1341static void noinline 1770/* free up a loop structure */
1771void
1342loop_destroy (EV_P) 1772ev_loop_destroy (EV_P)
1343{ 1773{
1344 int i; 1774 int i;
1345 1775
1776#if EV_MULTIPLICITY
1777 /* mimic free (0) */
1778 if (!EV_A)
1779 return;
1780#endif
1781
1782#if EV_CLEANUP_ENABLE
1783 /* queue cleanup watchers (and execute them) */
1784 if (expect_false (cleanupcnt))
1785 {
1786 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1787 EV_INVOKE_PENDING;
1788 }
1789#endif
1790
1791#if EV_CHILD_ENABLE
1792 if (ev_is_active (&childev))
1793 {
1794 ev_ref (EV_A); /* child watcher */
1795 ev_signal_stop (EV_A_ &childev);
1796 }
1797#endif
1798
1346 if (ev_is_active (&pipeev)) 1799 if (ev_is_active (&pipe_w))
1347 { 1800 {
1348 ev_ref (EV_A); /* signal watcher */ 1801 /*ev_ref (EV_A);*/
1349 ev_io_stop (EV_A_ &pipeev); 1802 /*ev_io_stop (EV_A_ &pipe_w);*/
1350 1803
1351#if EV_USE_EVENTFD 1804#if EV_USE_EVENTFD
1352 if (evfd >= 0) 1805 if (evfd >= 0)
1353 close (evfd); 1806 close (evfd);
1354#endif 1807#endif
1355 1808
1356 if (evpipe [0] >= 0) 1809 if (evpipe [0] >= 0)
1357 { 1810 {
1358 close (evpipe [0]); 1811 EV_WIN32_CLOSE_FD (evpipe [0]);
1359 close (evpipe [1]); 1812 EV_WIN32_CLOSE_FD (evpipe [1]);
1360 } 1813 }
1361 } 1814 }
1815
1816#if EV_USE_SIGNALFD
1817 if (ev_is_active (&sigfd_w))
1818 close (sigfd);
1819#endif
1362 1820
1363#if EV_USE_INOTIFY 1821#if EV_USE_INOTIFY
1364 if (fs_fd >= 0) 1822 if (fs_fd >= 0)
1365 close (fs_fd); 1823 close (fs_fd);
1366#endif 1824#endif
1367 1825
1368 if (backend_fd >= 0) 1826 if (backend_fd >= 0)
1369 close (backend_fd); 1827 close (backend_fd);
1370 1828
1829#if EV_USE_IOCP
1830 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1831#endif
1371#if EV_USE_PORT 1832#if EV_USE_PORT
1372 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1833 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1373#endif 1834#endif
1374#if EV_USE_KQUEUE 1835#if EV_USE_KQUEUE
1375 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1836 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1390#if EV_IDLE_ENABLE 1851#if EV_IDLE_ENABLE
1391 array_free (idle, [i]); 1852 array_free (idle, [i]);
1392#endif 1853#endif
1393 } 1854 }
1394 1855
1395 ev_free (anfds); anfdmax = 0; 1856 ev_free (anfds); anfds = 0; anfdmax = 0;
1396 1857
1397 /* have to use the microsoft-never-gets-it-right macro */ 1858 /* have to use the microsoft-never-gets-it-right macro */
1859 array_free (rfeed, EMPTY);
1398 array_free (fdchange, EMPTY); 1860 array_free (fdchange, EMPTY);
1399 array_free (timer, EMPTY); 1861 array_free (timer, EMPTY);
1400#if EV_PERIODIC_ENABLE 1862#if EV_PERIODIC_ENABLE
1401 array_free (periodic, EMPTY); 1863 array_free (periodic, EMPTY);
1402#endif 1864#endif
1403#if EV_FORK_ENABLE 1865#if EV_FORK_ENABLE
1404 array_free (fork, EMPTY); 1866 array_free (fork, EMPTY);
1405#endif 1867#endif
1868#if EV_CLEANUP_ENABLE
1869 array_free (cleanup, EMPTY);
1870#endif
1406 array_free (prepare, EMPTY); 1871 array_free (prepare, EMPTY);
1407 array_free (check, EMPTY); 1872 array_free (check, EMPTY);
1408#if EV_ASYNC_ENABLE 1873#if EV_ASYNC_ENABLE
1409 array_free (async, EMPTY); 1874 array_free (async, EMPTY);
1410#endif 1875#endif
1411 1876
1412 backend = 0; 1877 backend = 0;
1878
1879#if EV_MULTIPLICITY
1880 if (ev_is_default_loop (EV_A))
1881#endif
1882 ev_default_loop_ptr = 0;
1883#if EV_MULTIPLICITY
1884 else
1885 ev_free (EV_A);
1886#endif
1413} 1887}
1414 1888
1415#if EV_USE_INOTIFY 1889#if EV_USE_INOTIFY
1416void inline_size infy_fork (EV_P); 1890inline_size void infy_fork (EV_P);
1417#endif 1891#endif
1418 1892
1419void inline_size 1893inline_size void
1420loop_fork (EV_P) 1894loop_fork (EV_P)
1421{ 1895{
1422#if EV_USE_PORT 1896#if EV_USE_PORT
1423 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1897 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1424#endif 1898#endif
… …
1430#endif 1904#endif
1431#if EV_USE_INOTIFY 1905#if EV_USE_INOTIFY
1432 infy_fork (EV_A); 1906 infy_fork (EV_A);
1433#endif 1907#endif
1434 1908
1435 if (ev_is_active (&pipeev)) 1909 if (ev_is_active (&pipe_w))
1436 { 1910 {
1437 /* this "locks" the handlers against writing to the pipe */ 1911 /* this "locks" the handlers against writing to the pipe */
1438 /* while we modify the fd vars */ 1912 /* while we modify the fd vars */
1439 gotsig = 1; 1913 sig_pending = 1;
1440#if EV_ASYNC_ENABLE 1914#if EV_ASYNC_ENABLE
1441 gotasync = 1; 1915 async_pending = 1;
1442#endif 1916#endif
1443 1917
1444 ev_ref (EV_A); 1918 ev_ref (EV_A);
1445 ev_io_stop (EV_A_ &pipeev); 1919 ev_io_stop (EV_A_ &pipe_w);
1446 1920
1447#if EV_USE_EVENTFD 1921#if EV_USE_EVENTFD
1448 if (evfd >= 0) 1922 if (evfd >= 0)
1449 close (evfd); 1923 close (evfd);
1450#endif 1924#endif
1451 1925
1452 if (evpipe [0] >= 0) 1926 if (evpipe [0] >= 0)
1453 { 1927 {
1454 close (evpipe [0]); 1928 EV_WIN32_CLOSE_FD (evpipe [0]);
1455 close (evpipe [1]); 1929 EV_WIN32_CLOSE_FD (evpipe [1]);
1456 } 1930 }
1457 1931
1932#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1458 evpipe_init (EV_A); 1933 evpipe_init (EV_A);
1459 /* now iterate over everything, in case we missed something */ 1934 /* now iterate over everything, in case we missed something */
1460 pipecb (EV_A_ &pipeev, EV_READ); 1935 pipecb (EV_A_ &pipe_w, EV_READ);
1936#endif
1461 } 1937 }
1462 1938
1463 postfork = 0; 1939 postfork = 0;
1464} 1940}
1941
1942#if EV_MULTIPLICITY
1943
1944struct ev_loop *
1945ev_loop_new (unsigned int flags)
1946{
1947 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1948
1949 memset (EV_A, 0, sizeof (struct ev_loop));
1950 loop_init (EV_A_ flags);
1951
1952 if (ev_backend (EV_A))
1953 return EV_A;
1954
1955 ev_free (EV_A);
1956 return 0;
1957}
1958
1959#endif /* multiplicity */
1960
1961#if EV_VERIFY
1962static void noinline
1963verify_watcher (EV_P_ W w)
1964{
1965 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1966
1967 if (w->pending)
1968 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1969}
1970
1971static void noinline
1972verify_heap (EV_P_ ANHE *heap, int N)
1973{
1974 int i;
1975
1976 for (i = HEAP0; i < N + HEAP0; ++i)
1977 {
1978 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1979 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1980 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1981
1982 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1983 }
1984}
1985
1986static void noinline
1987array_verify (EV_P_ W *ws, int cnt)
1988{
1989 while (cnt--)
1990 {
1991 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1992 verify_watcher (EV_A_ ws [cnt]);
1993 }
1994}
1995#endif
1996
1997#if EV_FEATURE_API
1998void
1999ev_verify (EV_P)
2000{
2001#if EV_VERIFY
2002 int i;
2003 WL w;
2004
2005 assert (activecnt >= -1);
2006
2007 assert (fdchangemax >= fdchangecnt);
2008 for (i = 0; i < fdchangecnt; ++i)
2009 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2010
2011 assert (anfdmax >= 0);
2012 for (i = 0; i < anfdmax; ++i)
2013 for (w = anfds [i].head; w; w = w->next)
2014 {
2015 verify_watcher (EV_A_ (W)w);
2016 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2017 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2018 }
2019
2020 assert (timermax >= timercnt);
2021 verify_heap (EV_A_ timers, timercnt);
2022
2023#if EV_PERIODIC_ENABLE
2024 assert (periodicmax >= periodiccnt);
2025 verify_heap (EV_A_ periodics, periodiccnt);
2026#endif
2027
2028 for (i = NUMPRI; i--; )
2029 {
2030 assert (pendingmax [i] >= pendingcnt [i]);
2031#if EV_IDLE_ENABLE
2032 assert (idleall >= 0);
2033 assert (idlemax [i] >= idlecnt [i]);
2034 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2035#endif
2036 }
2037
2038#if EV_FORK_ENABLE
2039 assert (forkmax >= forkcnt);
2040 array_verify (EV_A_ (W *)forks, forkcnt);
2041#endif
2042
2043#if EV_CLEANUP_ENABLE
2044 assert (cleanupmax >= cleanupcnt);
2045 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2046#endif
2047
2048#if EV_ASYNC_ENABLE
2049 assert (asyncmax >= asynccnt);
2050 array_verify (EV_A_ (W *)asyncs, asynccnt);
2051#endif
2052
2053#if EV_PREPARE_ENABLE
2054 assert (preparemax >= preparecnt);
2055 array_verify (EV_A_ (W *)prepares, preparecnt);
2056#endif
2057
2058#if EV_CHECK_ENABLE
2059 assert (checkmax >= checkcnt);
2060 array_verify (EV_A_ (W *)checks, checkcnt);
2061#endif
2062
2063# if 0
2064#if EV_CHILD_ENABLE
2065 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2066 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2067#endif
2068# endif
2069#endif
2070}
2071#endif
1465 2072
1466#if EV_MULTIPLICITY 2073#if EV_MULTIPLICITY
1467struct ev_loop * 2074struct ev_loop *
1468ev_loop_new (unsigned int flags)
1469{
1470 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1471
1472 memset (loop, 0, sizeof (struct ev_loop));
1473
1474 loop_init (EV_A_ flags);
1475
1476 if (ev_backend (EV_A))
1477 return loop;
1478
1479 return 0;
1480}
1481
1482void
1483ev_loop_destroy (EV_P)
1484{
1485 loop_destroy (EV_A);
1486 ev_free (loop);
1487}
1488
1489void
1490ev_loop_fork (EV_P)
1491{
1492 postfork = 1; /* must be in line with ev_default_fork */
1493}
1494#endif
1495
1496#if EV_MULTIPLICITY
1497struct ev_loop *
1498ev_default_loop_init (unsigned int flags)
1499#else 2075#else
1500int 2076int
2077#endif
1501ev_default_loop (unsigned int flags) 2078ev_default_loop (unsigned int flags)
1502#endif
1503{ 2079{
1504 if (!ev_default_loop_ptr) 2080 if (!ev_default_loop_ptr)
1505 { 2081 {
1506#if EV_MULTIPLICITY 2082#if EV_MULTIPLICITY
1507 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2083 EV_P = ev_default_loop_ptr = &default_loop_struct;
1508#else 2084#else
1509 ev_default_loop_ptr = 1; 2085 ev_default_loop_ptr = 1;
1510#endif 2086#endif
1511 2087
1512 loop_init (EV_A_ flags); 2088 loop_init (EV_A_ flags);
1513 2089
1514 if (ev_backend (EV_A)) 2090 if (ev_backend (EV_A))
1515 { 2091 {
1516#ifndef _WIN32 2092#if EV_CHILD_ENABLE
1517 ev_signal_init (&childev, childcb, SIGCHLD); 2093 ev_signal_init (&childev, childcb, SIGCHLD);
1518 ev_set_priority (&childev, EV_MAXPRI); 2094 ev_set_priority (&childev, EV_MAXPRI);
1519 ev_signal_start (EV_A_ &childev); 2095 ev_signal_start (EV_A_ &childev);
1520 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2096 ev_unref (EV_A); /* child watcher should not keep loop alive */
1521#endif 2097#endif
… …
1526 2102
1527 return ev_default_loop_ptr; 2103 return ev_default_loop_ptr;
1528} 2104}
1529 2105
1530void 2106void
1531ev_default_destroy (void) 2107ev_loop_fork (EV_P)
1532{ 2108{
1533#if EV_MULTIPLICITY
1534 struct ev_loop *loop = ev_default_loop_ptr;
1535#endif
1536
1537#ifndef _WIN32
1538 ev_ref (EV_A); /* child watcher */
1539 ev_signal_stop (EV_A_ &childev);
1540#endif
1541
1542 loop_destroy (EV_A);
1543}
1544
1545void
1546ev_default_fork (void)
1547{
1548#if EV_MULTIPLICITY
1549 struct ev_loop *loop = ev_default_loop_ptr;
1550#endif
1551
1552 if (backend)
1553 postfork = 1; /* must be in line with ev_loop_fork */ 2109 postfork = 1; /* must be in line with ev_default_fork */
1554} 2110}
1555 2111
1556/*****************************************************************************/ 2112/*****************************************************************************/
1557 2113
1558void 2114void
1559ev_invoke (EV_P_ void *w, int revents) 2115ev_invoke (EV_P_ void *w, int revents)
1560{ 2116{
1561 EV_CB_INVOKE ((W)w, revents); 2117 EV_CB_INVOKE ((W)w, revents);
1562} 2118}
1563 2119
1564void inline_speed 2120unsigned int
1565call_pending (EV_P) 2121ev_pending_count (EV_P)
2122{
2123 int pri;
2124 unsigned int count = 0;
2125
2126 for (pri = NUMPRI; pri--; )
2127 count += pendingcnt [pri];
2128
2129 return count;
2130}
2131
2132void noinline
2133ev_invoke_pending (EV_P)
1566{ 2134{
1567 int pri; 2135 int pri;
1568 2136
1569 for (pri = NUMPRI; pri--; ) 2137 for (pri = NUMPRI; pri--; )
1570 while (pendingcnt [pri]) 2138 while (pendingcnt [pri])
1571 { 2139 {
1572 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1573 2141
1574 if (expect_true (p->w))
1575 {
1576 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1577
1578 p->w->pending = 0; 2142 p->w->pending = 0;
1579 EV_CB_INVOKE (p->w, p->events); 2143 EV_CB_INVOKE (p->w, p->events);
1580 } 2144 EV_FREQUENT_CHECK;
1581 } 2145 }
1582} 2146}
1583 2147
1584#if EV_IDLE_ENABLE 2148#if EV_IDLE_ENABLE
1585void inline_size 2149/* make idle watchers pending. this handles the "call-idle */
2150/* only when higher priorities are idle" logic */
2151inline_size void
1586idle_reify (EV_P) 2152idle_reify (EV_P)
1587{ 2153{
1588 if (expect_false (idleall)) 2154 if (expect_false (idleall))
1589 { 2155 {
1590 int pri; 2156 int pri;
… …
1602 } 2168 }
1603 } 2169 }
1604} 2170}
1605#endif 2171#endif
1606 2172
1607void inline_size 2173/* make timers pending */
2174inline_size void
1608timers_reify (EV_P) 2175timers_reify (EV_P)
1609{ 2176{
2177 EV_FREQUENT_CHECK;
2178
1610 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2179 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1611 { 2180 {
1612 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2181 do
1613
1614 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1615
1616 /* first reschedule or stop timer */
1617 if (w->repeat)
1618 { 2182 {
2183 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2184
2185 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2186
2187 /* first reschedule or stop timer */
2188 if (w->repeat)
2189 {
1619 ev_at (w) += w->repeat; 2190 ev_at (w) += w->repeat;
1620 if (ev_at (w) < mn_now) 2191 if (ev_at (w) < mn_now)
1621 ev_at (w) = mn_now; 2192 ev_at (w) = mn_now;
1622 2193
1623 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2194 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1624 2195
1625 ANHE_at_set (timers [HEAP0]); 2196 ANHE_at_cache (timers [HEAP0]);
1626 downheap (timers, timercnt, HEAP0); 2197 downheap (timers, timercnt, HEAP0);
2198 }
2199 else
2200 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2201
2202 EV_FREQUENT_CHECK;
2203 feed_reverse (EV_A_ (W)w);
1627 } 2204 }
1628 else 2205 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1629 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1630 2206
1631 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2207 feed_reverse_done (EV_A_ EV_TIMER);
1632 } 2208 }
1633} 2209}
1634 2210
1635#if EV_PERIODIC_ENABLE 2211#if EV_PERIODIC_ENABLE
1636void inline_size 2212
2213inline_speed void
2214periodic_recalc (EV_P_ ev_periodic *w)
2215{
2216 /* TODO: use slow but potentially more correct incremental algo, */
2217 /* also do not rely on ceil */
2218 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2219}
2220
2221/* make periodics pending */
2222inline_size void
1637periodics_reify (EV_P) 2223periodics_reify (EV_P)
1638{ 2224{
2225 EV_FREQUENT_CHECK;
2226
1639 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2227 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1640 { 2228 {
1641 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2229 int feed_count = 0;
1642 2230
1643 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2231 do
1644
1645 /* first reschedule or stop timer */
1646 if (w->reschedule_cb)
1647 { 2232 {
2233 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2234
2235 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2236
2237 /* first reschedule or stop timer */
2238 if (w->reschedule_cb)
2239 {
1648 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2240 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1649 2241
1650 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2242 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1651 2243
1652 ANHE_at_set (periodics [HEAP0]); 2244 ANHE_at_cache (periodics [HEAP0]);
1653 downheap (periodics, periodiccnt, HEAP0); 2245 downheap (periodics, periodiccnt, HEAP0);
2246 }
2247 else if (w->interval)
2248 {
2249 periodic_recalc (EV_A_ w);
2250
2251 /* if next trigger time is not sufficiently in the future, put it there */
2252 /* this might happen because of floating point inexactness */
2253 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2254 {
2255 ev_at (w) += w->interval;
2256
2257 /* if interval is unreasonably low we might still have a time in the past */
2258 /* so correct this. this will make the periodic very inexact, but the user */
2259 /* has effectively asked to get triggered more often than possible */
2260 if (ev_at (w) < ev_rt_now)
2261 ev_at (w) = ev_rt_now;
2262 }
2263
2264 ANHE_at_cache (periodics [HEAP0]);
2265 downheap (periodics, periodiccnt, HEAP0);
2266 }
2267 else
2268 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2269
2270 EV_FREQUENT_CHECK;
2271 feed_reverse (EV_A_ (W)w);
1654 } 2272 }
1655 else if (w->interval) 2273 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1656 {
1657 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1658 /* if next trigger time is not sufficiently in the future, put it there */
1659 /* this might happen because of floating point inexactness */
1660 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1661 {
1662 ev_at (w) += w->interval;
1663 2274
1664 /* if interval is unreasonably low we might still have a time in the past */
1665 /* so correct this. this will make the periodic very inexact, but the user */
1666 /* has effectively asked to get triggered more often than possible */
1667 if (ev_at (w) < ev_rt_now)
1668 ev_at (w) = ev_rt_now;
1669 }
1670
1671 ANHE_at_set (periodics [HEAP0]);
1672 downheap (periodics, periodiccnt, HEAP0);
1673 }
1674 else
1675 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1676
1677 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2275 feed_reverse_done (EV_A_ EV_PERIODIC);
1678 } 2276 }
1679} 2277}
1680 2278
2279/* simply recalculate all periodics */
2280/* TODO: maybe ensure that at least one event happens when jumping forward? */
1681static void noinline 2281static void noinline
1682periodics_reschedule (EV_P) 2282periodics_reschedule (EV_P)
1683{ 2283{
1684 int i; 2284 int i;
1685 2285
… …
1689 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2289 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1690 2290
1691 if (w->reschedule_cb) 2291 if (w->reschedule_cb)
1692 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2292 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1693 else if (w->interval) 2293 else if (w->interval)
1694 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2294 periodic_recalc (EV_A_ w);
1695 2295
1696 ANHE_at_set (periodics [i]); 2296 ANHE_at_cache (periodics [i]);
1697 } 2297 }
1698 2298
1699 /* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */ 2299 reheap (periodics, periodiccnt);
1700 /* also, this is easy and corretc for both 2-heaps and 4-heaps */ 2300}
2301#endif
2302
2303/* adjust all timers by a given offset */
2304static void noinline
2305timers_reschedule (EV_P_ ev_tstamp adjust)
2306{
2307 int i;
2308
1701 for (i = 0; i < periodiccnt; ++i) 2309 for (i = 0; i < timercnt; ++i)
1702 upheap (periodics, i + HEAP0); 2310 {
2311 ANHE *he = timers + i + HEAP0;
2312 ANHE_w (*he)->at += adjust;
2313 ANHE_at_cache (*he);
2314 }
1703} 2315}
1704#endif
1705 2316
1706void inline_speed 2317/* fetch new monotonic and realtime times from the kernel */
2318/* also detect if there was a timejump, and act accordingly */
2319inline_speed void
1707time_update (EV_P_ ev_tstamp max_block) 2320time_update (EV_P_ ev_tstamp max_block)
1708{ 2321{
1709 int i;
1710
1711#if EV_USE_MONOTONIC 2322#if EV_USE_MONOTONIC
1712 if (expect_true (have_monotonic)) 2323 if (expect_true (have_monotonic))
1713 { 2324 {
2325 int i;
1714 ev_tstamp odiff = rtmn_diff; 2326 ev_tstamp odiff = rtmn_diff;
1715 2327
1716 mn_now = get_clock (); 2328 mn_now = get_clock ();
1717 2329
1718 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2330 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1744 ev_rt_now = ev_time (); 2356 ev_rt_now = ev_time ();
1745 mn_now = get_clock (); 2357 mn_now = get_clock ();
1746 now_floor = mn_now; 2358 now_floor = mn_now;
1747 } 2359 }
1748 2360
2361 /* no timer adjustment, as the monotonic clock doesn't jump */
2362 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1749# if EV_PERIODIC_ENABLE 2363# if EV_PERIODIC_ENABLE
1750 periodics_reschedule (EV_A); 2364 periodics_reschedule (EV_A);
1751# endif 2365# endif
1752 /* no timer adjustment, as the monotonic clock doesn't jump */
1753 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1754 } 2366 }
1755 else 2367 else
1756#endif 2368#endif
1757 { 2369 {
1758 ev_rt_now = ev_time (); 2370 ev_rt_now = ev_time ();
1759 2371
1760 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1761 { 2373 {
2374 /* adjust timers. this is easy, as the offset is the same for all of them */
2375 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1762#if EV_PERIODIC_ENABLE 2376#if EV_PERIODIC_ENABLE
1763 periodics_reschedule (EV_A); 2377 periodics_reschedule (EV_A);
1764#endif 2378#endif
1765 /* adjust timers. this is easy, as the offset is the same for all of them */
1766 for (i = 0; i < timercnt; ++i)
1767 {
1768 ANHE *he = timers + i + HEAP0;
1769 ANHE_w (*he)->at += ev_rt_now - mn_now;
1770 ANHE_at_set (*he);
1771 }
1772 } 2379 }
1773 2380
1774 mn_now = ev_rt_now; 2381 mn_now = ev_rt_now;
1775 } 2382 }
1776} 2383}
1777 2384
1778void 2385void
1779ev_ref (EV_P)
1780{
1781 ++activecnt;
1782}
1783
1784void
1785ev_unref (EV_P)
1786{
1787 --activecnt;
1788}
1789
1790static int loop_done;
1791
1792void
1793ev_loop (EV_P_ int flags) 2386ev_run (EV_P_ int flags)
1794{ 2387{
2388#if EV_FEATURE_API
2389 ++loop_depth;
2390#endif
2391
2392 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2393
1795 loop_done = EVUNLOOP_CANCEL; 2394 loop_done = EVBREAK_CANCEL;
1796 2395
1797 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2396 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1798 2397
1799 do 2398 do
1800 { 2399 {
2400#if EV_VERIFY >= 2
2401 ev_verify (EV_A);
2402#endif
2403
1801#ifndef _WIN32 2404#ifndef _WIN32
1802 if (expect_false (curpid)) /* penalise the forking check even more */ 2405 if (expect_false (curpid)) /* penalise the forking check even more */
1803 if (expect_false (getpid () != curpid)) 2406 if (expect_false (getpid () != curpid))
1804 { 2407 {
1805 curpid = getpid (); 2408 curpid = getpid ();
… …
1811 /* we might have forked, so queue fork handlers */ 2414 /* we might have forked, so queue fork handlers */
1812 if (expect_false (postfork)) 2415 if (expect_false (postfork))
1813 if (forkcnt) 2416 if (forkcnt)
1814 { 2417 {
1815 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2418 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1816 call_pending (EV_A); 2419 EV_INVOKE_PENDING;
1817 } 2420 }
1818#endif 2421#endif
1819 2422
2423#if EV_PREPARE_ENABLE
1820 /* queue prepare watchers (and execute them) */ 2424 /* queue prepare watchers (and execute them) */
1821 if (expect_false (preparecnt)) 2425 if (expect_false (preparecnt))
1822 { 2426 {
1823 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2427 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1824 call_pending (EV_A); 2428 EV_INVOKE_PENDING;
1825 } 2429 }
2430#endif
1826 2431
1827 if (expect_false (!activecnt)) 2432 if (expect_false (loop_done))
1828 break; 2433 break;
1829 2434
1830 /* we might have forked, so reify kernel state if necessary */ 2435 /* we might have forked, so reify kernel state if necessary */
1831 if (expect_false (postfork)) 2436 if (expect_false (postfork))
1832 loop_fork (EV_A); 2437 loop_fork (EV_A);
… …
1837 /* calculate blocking time */ 2442 /* calculate blocking time */
1838 { 2443 {
1839 ev_tstamp waittime = 0.; 2444 ev_tstamp waittime = 0.;
1840 ev_tstamp sleeptime = 0.; 2445 ev_tstamp sleeptime = 0.;
1841 2446
2447 /* remember old timestamp for io_blocktime calculation */
2448 ev_tstamp prev_mn_now = mn_now;
2449
2450 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100);
2452
1842 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1843 { 2454 {
1844 /* update time to cancel out callback processing overhead */
1845 time_update (EV_A_ 1e100);
1846
1847 waittime = MAX_BLOCKTIME; 2455 waittime = MAX_BLOCKTIME;
1848 2456
1849 if (timercnt) 2457 if (timercnt)
1850 { 2458 {
1851 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1858 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2466 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1859 if (waittime > to) waittime = to; 2467 if (waittime > to) waittime = to;
1860 } 2468 }
1861#endif 2469#endif
1862 2470
2471 /* don't let timeouts decrease the waittime below timeout_blocktime */
1863 if (expect_false (waittime < timeout_blocktime)) 2472 if (expect_false (waittime < timeout_blocktime))
1864 waittime = timeout_blocktime; 2473 waittime = timeout_blocktime;
1865 2474
1866 sleeptime = waittime - backend_fudge; 2475 /* extra check because io_blocktime is commonly 0 */
1867
1868 if (expect_true (sleeptime > io_blocktime)) 2476 if (expect_false (io_blocktime))
1869 sleeptime = io_blocktime;
1870
1871 if (sleeptime)
1872 { 2477 {
2478 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2479
2480 if (sleeptime > waittime - backend_fudge)
2481 sleeptime = waittime - backend_fudge;
2482
2483 if (expect_true (sleeptime > 0.))
2484 {
1873 ev_sleep (sleeptime); 2485 ev_sleep (sleeptime);
1874 waittime -= sleeptime; 2486 waittime -= sleeptime;
2487 }
1875 } 2488 }
1876 } 2489 }
1877 2490
2491#if EV_FEATURE_API
1878 ++loop_count; 2492 ++loop_count;
2493#endif
2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1879 backend_poll (EV_A_ waittime); 2495 backend_poll (EV_A_ waittime);
2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1880 2497
1881 /* update ev_rt_now, do magic */ 2498 /* update ev_rt_now, do magic */
1882 time_update (EV_A_ waittime + sleeptime); 2499 time_update (EV_A_ waittime + sleeptime);
1883 } 2500 }
1884 2501
… …
1891#if EV_IDLE_ENABLE 2508#if EV_IDLE_ENABLE
1892 /* queue idle watchers unless other events are pending */ 2509 /* queue idle watchers unless other events are pending */
1893 idle_reify (EV_A); 2510 idle_reify (EV_A);
1894#endif 2511#endif
1895 2512
2513#if EV_CHECK_ENABLE
1896 /* queue check watchers, to be executed first */ 2514 /* queue check watchers, to be executed first */
1897 if (expect_false (checkcnt)) 2515 if (expect_false (checkcnt))
1898 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2516 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2517#endif
1899 2518
1900 call_pending (EV_A); 2519 EV_INVOKE_PENDING;
1901 } 2520 }
1902 while (expect_true ( 2521 while (expect_true (
1903 activecnt 2522 activecnt
1904 && !loop_done 2523 && !loop_done
1905 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2524 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1906 )); 2525 ));
1907 2526
1908 if (loop_done == EVUNLOOP_ONE) 2527 if (loop_done == EVBREAK_ONE)
1909 loop_done = EVUNLOOP_CANCEL; 2528 loop_done = EVBREAK_CANCEL;
1910}
1911 2529
2530#if EV_FEATURE_API
2531 --loop_depth;
2532#endif
2533}
2534
1912void 2535void
1913ev_unloop (EV_P_ int how) 2536ev_break (EV_P_ int how)
1914{ 2537{
1915 loop_done = how; 2538 loop_done = how;
1916} 2539}
1917 2540
2541void
2542ev_ref (EV_P)
2543{
2544 ++activecnt;
2545}
2546
2547void
2548ev_unref (EV_P)
2549{
2550 --activecnt;
2551}
2552
2553void
2554ev_now_update (EV_P)
2555{
2556 time_update (EV_A_ 1e100);
2557}
2558
2559void
2560ev_suspend (EV_P)
2561{
2562 ev_now_update (EV_A);
2563}
2564
2565void
2566ev_resume (EV_P)
2567{
2568 ev_tstamp mn_prev = mn_now;
2569
2570 ev_now_update (EV_A);
2571 timers_reschedule (EV_A_ mn_now - mn_prev);
2572#if EV_PERIODIC_ENABLE
2573 /* TODO: really do this? */
2574 periodics_reschedule (EV_A);
2575#endif
2576}
2577
1918/*****************************************************************************/ 2578/*****************************************************************************/
2579/* singly-linked list management, used when the expected list length is short */
1919 2580
1920void inline_size 2581inline_size void
1921wlist_add (WL *head, WL elem) 2582wlist_add (WL *head, WL elem)
1922{ 2583{
1923 elem->next = *head; 2584 elem->next = *head;
1924 *head = elem; 2585 *head = elem;
1925} 2586}
1926 2587
1927void inline_size 2588inline_size void
1928wlist_del (WL *head, WL elem) 2589wlist_del (WL *head, WL elem)
1929{ 2590{
1930 while (*head) 2591 while (*head)
1931 { 2592 {
1932 if (*head == elem) 2593 if (expect_true (*head == elem))
1933 { 2594 {
1934 *head = elem->next; 2595 *head = elem->next;
1935 return; 2596 break;
1936 } 2597 }
1937 2598
1938 head = &(*head)->next; 2599 head = &(*head)->next;
1939 } 2600 }
1940} 2601}
1941 2602
1942void inline_speed 2603/* internal, faster, version of ev_clear_pending */
2604inline_speed void
1943clear_pending (EV_P_ W w) 2605clear_pending (EV_P_ W w)
1944{ 2606{
1945 if (w->pending) 2607 if (w->pending)
1946 { 2608 {
1947 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2609 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1948 w->pending = 0; 2610 w->pending = 0;
1949 } 2611 }
1950} 2612}
1951 2613
1952int 2614int
… …
1956 int pending = w_->pending; 2618 int pending = w_->pending;
1957 2619
1958 if (expect_true (pending)) 2620 if (expect_true (pending))
1959 { 2621 {
1960 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2622 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2623 p->w = (W)&pending_w;
1961 w_->pending = 0; 2624 w_->pending = 0;
1962 p->w = 0;
1963 return p->events; 2625 return p->events;
1964 } 2626 }
1965 else 2627 else
1966 return 0; 2628 return 0;
1967} 2629}
1968 2630
1969void inline_size 2631inline_size void
1970pri_adjust (EV_P_ W w) 2632pri_adjust (EV_P_ W w)
1971{ 2633{
1972 int pri = w->priority; 2634 int pri = ev_priority (w);
1973 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2635 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1974 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2636 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1975 w->priority = pri; 2637 ev_set_priority (w, pri);
1976} 2638}
1977 2639
1978void inline_speed 2640inline_speed void
1979ev_start (EV_P_ W w, int active) 2641ev_start (EV_P_ W w, int active)
1980{ 2642{
1981 pri_adjust (EV_A_ w); 2643 pri_adjust (EV_A_ w);
1982 w->active = active; 2644 w->active = active;
1983 ev_ref (EV_A); 2645 ev_ref (EV_A);
1984} 2646}
1985 2647
1986void inline_size 2648inline_size void
1987ev_stop (EV_P_ W w) 2649ev_stop (EV_P_ W w)
1988{ 2650{
1989 ev_unref (EV_A); 2651 ev_unref (EV_A);
1990 w->active = 0; 2652 w->active = 0;
1991} 2653}
… …
1998 int fd = w->fd; 2660 int fd = w->fd;
1999 2661
2000 if (expect_false (ev_is_active (w))) 2662 if (expect_false (ev_is_active (w)))
2001 return; 2663 return;
2002 2664
2003 assert (("ev_io_start called with negative fd", fd >= 0)); 2665 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2666 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2667
2668 EV_FREQUENT_CHECK;
2004 2669
2005 ev_start (EV_A_ (W)w, 1); 2670 ev_start (EV_A_ (W)w, 1);
2006 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2671 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2007 wlist_add (&anfds[fd].head, (WL)w); 2672 wlist_add (&anfds[fd].head, (WL)w);
2008 2673
2009 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2674 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2010 w->events &= ~EV_IOFDSET; 2675 w->events &= ~EV__IOFDSET;
2676
2677 EV_FREQUENT_CHECK;
2011} 2678}
2012 2679
2013void noinline 2680void noinline
2014ev_io_stop (EV_P_ ev_io *w) 2681ev_io_stop (EV_P_ ev_io *w)
2015{ 2682{
2016 clear_pending (EV_A_ (W)w); 2683 clear_pending (EV_A_ (W)w);
2017 if (expect_false (!ev_is_active (w))) 2684 if (expect_false (!ev_is_active (w)))
2018 return; 2685 return;
2019 2686
2020 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2687 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2688
2689 EV_FREQUENT_CHECK;
2021 2690
2022 wlist_del (&anfds[w->fd].head, (WL)w); 2691 wlist_del (&anfds[w->fd].head, (WL)w);
2023 ev_stop (EV_A_ (W)w); 2692 ev_stop (EV_A_ (W)w);
2024 2693
2025 fd_change (EV_A_ w->fd, 1); 2694 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2695
2696 EV_FREQUENT_CHECK;
2026} 2697}
2027 2698
2028void noinline 2699void noinline
2029ev_timer_start (EV_P_ ev_timer *w) 2700ev_timer_start (EV_P_ ev_timer *w)
2030{ 2701{
2031 if (expect_false (ev_is_active (w))) 2702 if (expect_false (ev_is_active (w)))
2032 return; 2703 return;
2033 2704
2034 ev_at (w) += mn_now; 2705 ev_at (w) += mn_now;
2035 2706
2036 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2707 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2037 2708
2709 EV_FREQUENT_CHECK;
2710
2711 ++timercnt;
2038 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2712 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2039 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 2713 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2040 ANHE_w (timers [ev_active (w)]) = (WT)w; 2714 ANHE_w (timers [ev_active (w)]) = (WT)w;
2041 ANHE_at_set (timers [ev_active (w)]); 2715 ANHE_at_cache (timers [ev_active (w)]);
2042 upheap (timers, ev_active (w)); 2716 upheap (timers, ev_active (w));
2043 2717
2718 EV_FREQUENT_CHECK;
2719
2044 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2720 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2045} 2721}
2046 2722
2047void noinline 2723void noinline
2048ev_timer_stop (EV_P_ ev_timer *w) 2724ev_timer_stop (EV_P_ ev_timer *w)
2049{ 2725{
2050 clear_pending (EV_A_ (W)w); 2726 clear_pending (EV_A_ (W)w);
2051 if (expect_false (!ev_is_active (w))) 2727 if (expect_false (!ev_is_active (w)))
2052 return; 2728 return;
2053 2729
2730 EV_FREQUENT_CHECK;
2731
2054 { 2732 {
2055 int active = ev_active (w); 2733 int active = ev_active (w);
2056 2734
2057 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2735 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2058 2736
2737 --timercnt;
2738
2059 if (expect_true (active < timercnt + HEAP0 - 1)) 2739 if (expect_true (active < timercnt + HEAP0))
2060 { 2740 {
2061 timers [active] = timers [timercnt + HEAP0 - 1]; 2741 timers [active] = timers [timercnt + HEAP0];
2062 adjustheap (timers, timercnt, active); 2742 adjustheap (timers, timercnt, active);
2063 } 2743 }
2064
2065 --timercnt;
2066 } 2744 }
2067 2745
2068 ev_at (w) -= mn_now; 2746 ev_at (w) -= mn_now;
2069 2747
2070 ev_stop (EV_A_ (W)w); 2748 ev_stop (EV_A_ (W)w);
2749
2750 EV_FREQUENT_CHECK;
2071} 2751}
2072 2752
2073void noinline 2753void noinline
2074ev_timer_again (EV_P_ ev_timer *w) 2754ev_timer_again (EV_P_ ev_timer *w)
2075{ 2755{
2756 EV_FREQUENT_CHECK;
2757
2076 if (ev_is_active (w)) 2758 if (ev_is_active (w))
2077 { 2759 {
2078 if (w->repeat) 2760 if (w->repeat)
2079 { 2761 {
2080 ev_at (w) = mn_now + w->repeat; 2762 ev_at (w) = mn_now + w->repeat;
2081 ANHE_at_set (timers [ev_active (w)]); 2763 ANHE_at_cache (timers [ev_active (w)]);
2082 adjustheap (timers, timercnt, ev_active (w)); 2764 adjustheap (timers, timercnt, ev_active (w));
2083 } 2765 }
2084 else 2766 else
2085 ev_timer_stop (EV_A_ w); 2767 ev_timer_stop (EV_A_ w);
2086 } 2768 }
2087 else if (w->repeat) 2769 else if (w->repeat)
2088 { 2770 {
2089 ev_at (w) = w->repeat; 2771 ev_at (w) = w->repeat;
2090 ev_timer_start (EV_A_ w); 2772 ev_timer_start (EV_A_ w);
2091 } 2773 }
2774
2775 EV_FREQUENT_CHECK;
2776}
2777
2778ev_tstamp
2779ev_timer_remaining (EV_P_ ev_timer *w)
2780{
2781 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2092} 2782}
2093 2783
2094#if EV_PERIODIC_ENABLE 2784#if EV_PERIODIC_ENABLE
2095void noinline 2785void noinline
2096ev_periodic_start (EV_P_ ev_periodic *w) 2786ev_periodic_start (EV_P_ ev_periodic *w)
… …
2100 2790
2101 if (w->reschedule_cb) 2791 if (w->reschedule_cb)
2102 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2792 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2103 else if (w->interval) 2793 else if (w->interval)
2104 { 2794 {
2105 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2795 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2106 /* this formula differs from the one in periodic_reify because we do not always round up */ 2796 periodic_recalc (EV_A_ w);
2107 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2108 } 2797 }
2109 else 2798 else
2110 ev_at (w) = w->offset; 2799 ev_at (w) = w->offset;
2111 2800
2801 EV_FREQUENT_CHECK;
2802
2803 ++periodiccnt;
2112 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2804 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2113 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 2805 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2114 ANHE_w (periodics [ev_active (w)]) = (WT)w; 2806 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2115 ANHE_at_set (periodics [ev_active (w)]); 2807 ANHE_at_cache (periodics [ev_active (w)]);
2116 upheap (periodics, ev_active (w)); 2808 upheap (periodics, ev_active (w));
2117 2809
2810 EV_FREQUENT_CHECK;
2811
2118 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2812 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2119} 2813}
2120 2814
2121void noinline 2815void noinline
2122ev_periodic_stop (EV_P_ ev_periodic *w) 2816ev_periodic_stop (EV_P_ ev_periodic *w)
2123{ 2817{
2124 clear_pending (EV_A_ (W)w); 2818 clear_pending (EV_A_ (W)w);
2125 if (expect_false (!ev_is_active (w))) 2819 if (expect_false (!ev_is_active (w)))
2126 return; 2820 return;
2127 2821
2822 EV_FREQUENT_CHECK;
2823
2128 { 2824 {
2129 int active = ev_active (w); 2825 int active = ev_active (w);
2130 2826
2131 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2827 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2132 2828
2829 --periodiccnt;
2830
2133 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2831 if (expect_true (active < periodiccnt + HEAP0))
2134 { 2832 {
2135 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2833 periodics [active] = periodics [periodiccnt + HEAP0];
2136 adjustheap (periodics, periodiccnt, active); 2834 adjustheap (periodics, periodiccnt, active);
2137 } 2835 }
2138
2139 --periodiccnt;
2140 } 2836 }
2141 2837
2142 ev_stop (EV_A_ (W)w); 2838 ev_stop (EV_A_ (W)w);
2839
2840 EV_FREQUENT_CHECK;
2143} 2841}
2144 2842
2145void noinline 2843void noinline
2146ev_periodic_again (EV_P_ ev_periodic *w) 2844ev_periodic_again (EV_P_ ev_periodic *w)
2147{ 2845{
… …
2153 2851
2154#ifndef SA_RESTART 2852#ifndef SA_RESTART
2155# define SA_RESTART 0 2853# define SA_RESTART 0
2156#endif 2854#endif
2157 2855
2856#if EV_SIGNAL_ENABLE
2857
2158void noinline 2858void noinline
2159ev_signal_start (EV_P_ ev_signal *w) 2859ev_signal_start (EV_P_ ev_signal *w)
2160{ 2860{
2161#if EV_MULTIPLICITY
2162 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2163#endif
2164 if (expect_false (ev_is_active (w))) 2861 if (expect_false (ev_is_active (w)))
2165 return; 2862 return;
2166 2863
2167 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2864 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2168 2865
2169 evpipe_init (EV_A); 2866#if EV_MULTIPLICITY
2867 assert (("libev: a signal must not be attached to two different loops",
2868 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2170 2869
2870 signals [w->signum - 1].loop = EV_A;
2871#endif
2872
2873 EV_FREQUENT_CHECK;
2874
2875#if EV_USE_SIGNALFD
2876 if (sigfd == -2)
2171 { 2877 {
2172#ifndef _WIN32 2878 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2173 sigset_t full, prev; 2879 if (sigfd < 0 && errno == EINVAL)
2174 sigfillset (&full); 2880 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2175 sigprocmask (SIG_SETMASK, &full, &prev);
2176#endif
2177 2881
2178 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2882 if (sigfd >= 0)
2883 {
2884 fd_intern (sigfd); /* doing it twice will not hurt */
2179 2885
2180#ifndef _WIN32 2886 sigemptyset (&sigfd_set);
2181 sigprocmask (SIG_SETMASK, &prev, 0); 2887
2182#endif 2888 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2889 ev_set_priority (&sigfd_w, EV_MAXPRI);
2890 ev_io_start (EV_A_ &sigfd_w);
2891 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2892 }
2183 } 2893 }
2894
2895 if (sigfd >= 0)
2896 {
2897 /* TODO: check .head */
2898 sigaddset (&sigfd_set, w->signum);
2899 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2900
2901 signalfd (sigfd, &sigfd_set, 0);
2902 }
2903#endif
2184 2904
2185 ev_start (EV_A_ (W)w, 1); 2905 ev_start (EV_A_ (W)w, 1);
2186 wlist_add (&signals [w->signum - 1].head, (WL)w); 2906 wlist_add (&signals [w->signum - 1].head, (WL)w);
2187 2907
2188 if (!((WL)w)->next) 2908 if (!((WL)w)->next)
2909# if EV_USE_SIGNALFD
2910 if (sigfd < 0) /*TODO*/
2911# endif
2189 { 2912 {
2190#if _WIN32 2913# ifdef _WIN32
2914 evpipe_init (EV_A);
2915
2191 signal (w->signum, ev_sighandler); 2916 signal (w->signum, ev_sighandler);
2192#else 2917# else
2193 struct sigaction sa; 2918 struct sigaction sa;
2919
2920 evpipe_init (EV_A);
2921
2194 sa.sa_handler = ev_sighandler; 2922 sa.sa_handler = ev_sighandler;
2195 sigfillset (&sa.sa_mask); 2923 sigfillset (&sa.sa_mask);
2196 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2924 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2197 sigaction (w->signum, &sa, 0); 2925 sigaction (w->signum, &sa, 0);
2926
2927 if (origflags & EVFLAG_NOSIGMASK)
2928 {
2929 sigemptyset (&sa.sa_mask);
2930 sigaddset (&sa.sa_mask, w->signum);
2931 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2932 }
2198#endif 2933#endif
2199 } 2934 }
2935
2936 EV_FREQUENT_CHECK;
2200} 2937}
2201 2938
2202void noinline 2939void noinline
2203ev_signal_stop (EV_P_ ev_signal *w) 2940ev_signal_stop (EV_P_ ev_signal *w)
2204{ 2941{
2205 clear_pending (EV_A_ (W)w); 2942 clear_pending (EV_A_ (W)w);
2206 if (expect_false (!ev_is_active (w))) 2943 if (expect_false (!ev_is_active (w)))
2207 return; 2944 return;
2208 2945
2946 EV_FREQUENT_CHECK;
2947
2209 wlist_del (&signals [w->signum - 1].head, (WL)w); 2948 wlist_del (&signals [w->signum - 1].head, (WL)w);
2210 ev_stop (EV_A_ (W)w); 2949 ev_stop (EV_A_ (W)w);
2211 2950
2212 if (!signals [w->signum - 1].head) 2951 if (!signals [w->signum - 1].head)
2952 {
2953#if EV_MULTIPLICITY
2954 signals [w->signum - 1].loop = 0; /* unattach from signal */
2955#endif
2956#if EV_USE_SIGNALFD
2957 if (sigfd >= 0)
2958 {
2959 sigset_t ss;
2960
2961 sigemptyset (&ss);
2962 sigaddset (&ss, w->signum);
2963 sigdelset (&sigfd_set, w->signum);
2964
2965 signalfd (sigfd, &sigfd_set, 0);
2966 sigprocmask (SIG_UNBLOCK, &ss, 0);
2967 }
2968 else
2969#endif
2213 signal (w->signum, SIG_DFL); 2970 signal (w->signum, SIG_DFL);
2971 }
2972
2973 EV_FREQUENT_CHECK;
2214} 2974}
2975
2976#endif
2977
2978#if EV_CHILD_ENABLE
2215 2979
2216void 2980void
2217ev_child_start (EV_P_ ev_child *w) 2981ev_child_start (EV_P_ ev_child *w)
2218{ 2982{
2219#if EV_MULTIPLICITY 2983#if EV_MULTIPLICITY
2220 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2984 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2221#endif 2985#endif
2222 if (expect_false (ev_is_active (w))) 2986 if (expect_false (ev_is_active (w)))
2223 return; 2987 return;
2224 2988
2989 EV_FREQUENT_CHECK;
2990
2225 ev_start (EV_A_ (W)w, 1); 2991 ev_start (EV_A_ (W)w, 1);
2226 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2992 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2993
2994 EV_FREQUENT_CHECK;
2227} 2995}
2228 2996
2229void 2997void
2230ev_child_stop (EV_P_ ev_child *w) 2998ev_child_stop (EV_P_ ev_child *w)
2231{ 2999{
2232 clear_pending (EV_A_ (W)w); 3000 clear_pending (EV_A_ (W)w);
2233 if (expect_false (!ev_is_active (w))) 3001 if (expect_false (!ev_is_active (w)))
2234 return; 3002 return;
2235 3003
3004 EV_FREQUENT_CHECK;
3005
2236 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3006 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2237 ev_stop (EV_A_ (W)w); 3007 ev_stop (EV_A_ (W)w);
3008
3009 EV_FREQUENT_CHECK;
2238} 3010}
3011
3012#endif
2239 3013
2240#if EV_STAT_ENABLE 3014#if EV_STAT_ENABLE
2241 3015
2242# ifdef _WIN32 3016# ifdef _WIN32
2243# undef lstat 3017# undef lstat
2244# define lstat(a,b) _stati64 (a,b) 3018# define lstat(a,b) _stati64 (a,b)
2245# endif 3019# endif
2246 3020
2247#define DEF_STAT_INTERVAL 5.0074891 3021#define DEF_STAT_INTERVAL 5.0074891
3022#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2248#define MIN_STAT_INTERVAL 0.1074891 3023#define MIN_STAT_INTERVAL 0.1074891
2249 3024
2250static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3025static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2251 3026
2252#if EV_USE_INOTIFY 3027#if EV_USE_INOTIFY
2253# define EV_INOTIFY_BUFSIZE 8192 3028
3029/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3030# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2254 3031
2255static void noinline 3032static void noinline
2256infy_add (EV_P_ ev_stat *w) 3033infy_add (EV_P_ ev_stat *w)
2257{ 3034{
2258 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); 3035 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);
2259 3036
2260 if (w->wd < 0) 3037 if (w->wd >= 0)
3038 {
3039 struct statfs sfs;
3040
3041 /* now local changes will be tracked by inotify, but remote changes won't */
3042 /* unless the filesystem is known to be local, we therefore still poll */
3043 /* also do poll on <2.6.25, but with normal frequency */
3044
3045 if (!fs_2625)
3046 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3047 else if (!statfs (w->path, &sfs)
3048 && (sfs.f_type == 0x1373 /* devfs */
3049 || sfs.f_type == 0xEF53 /* ext2/3 */
3050 || sfs.f_type == 0x3153464a /* jfs */
3051 || sfs.f_type == 0x52654973 /* reiser3 */
3052 || sfs.f_type == 0x01021994 /* tempfs */
3053 || sfs.f_type == 0x58465342 /* xfs */))
3054 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3055 else
3056 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2261 { 3057 }
2262 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3058 else
3059 {
3060 /* can't use inotify, continue to stat */
3061 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2263 3062
2264 /* monitor some parent directory for speedup hints */ 3063 /* if path is not there, monitor some parent directory for speedup hints */
2265 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3064 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2266 /* but an efficiency issue only */ 3065 /* but an efficiency issue only */
2267 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3066 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2268 { 3067 {
2269 char path [4096]; 3068 char path [4096];
2270 strcpy (path, w->path); 3069 strcpy (path, w->path);
… …
2274 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3073 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2275 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3074 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2276 3075
2277 char *pend = strrchr (path, '/'); 3076 char *pend = strrchr (path, '/');
2278 3077
2279 if (!pend) 3078 if (!pend || pend == path)
2280 break; /* whoops, no '/', complain to your admin */ 3079 break;
2281 3080
2282 *pend = 0; 3081 *pend = 0;
2283 w->wd = inotify_add_watch (fs_fd, path, mask); 3082 w->wd = inotify_add_watch (fs_fd, path, mask);
2284 } 3083 }
2285 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3084 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2286 } 3085 }
2287 } 3086 }
2288 else
2289 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2290 3087
2291 if (w->wd >= 0) 3088 if (w->wd >= 0)
2292 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3089 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3090
3091 /* now re-arm timer, if required */
3092 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3093 ev_timer_again (EV_A_ &w->timer);
3094 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2293} 3095}
2294 3096
2295static void noinline 3097static void noinline
2296infy_del (EV_P_ ev_stat *w) 3098infy_del (EV_P_ ev_stat *w)
2297{ 3099{
… …
2300 3102
2301 if (wd < 0) 3103 if (wd < 0)
2302 return; 3104 return;
2303 3105
2304 w->wd = -2; 3106 w->wd = -2;
2305 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3107 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2306 wlist_del (&fs_hash [slot].head, (WL)w); 3108 wlist_del (&fs_hash [slot].head, (WL)w);
2307 3109
2308 /* remove this watcher, if others are watching it, they will rearm */ 3110 /* remove this watcher, if others are watching it, they will rearm */
2309 inotify_rm_watch (fs_fd, wd); 3111 inotify_rm_watch (fs_fd, wd);
2310} 3112}
2311 3113
2312static void noinline 3114static void noinline
2313infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3115infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2314{ 3116{
2315 if (slot < 0) 3117 if (slot < 0)
2316 /* overflow, need to check for all hahs slots */ 3118 /* overflow, need to check for all hash slots */
2317 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3119 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2318 infy_wd (EV_A_ slot, wd, ev); 3120 infy_wd (EV_A_ slot, wd, ev);
2319 else 3121 else
2320 { 3122 {
2321 WL w_; 3123 WL w_;
2322 3124
2323 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3125 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2324 { 3126 {
2325 ev_stat *w = (ev_stat *)w_; 3127 ev_stat *w = (ev_stat *)w_;
2326 w_ = w_->next; /* lets us remove this watcher and all before it */ 3128 w_ = w_->next; /* lets us remove this watcher and all before it */
2327 3129
2328 if (w->wd == wd || wd == -1) 3130 if (w->wd == wd || wd == -1)
2329 { 3131 {
2330 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3132 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2331 { 3133 {
3134 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2332 w->wd = -1; 3135 w->wd = -1;
2333 infy_add (EV_A_ w); /* re-add, no matter what */ 3136 infy_add (EV_A_ w); /* re-add, no matter what */
2334 } 3137 }
2335 3138
2336 stat_timer_cb (EV_A_ &w->timer, 0); 3139 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2341 3144
2342static void 3145static void
2343infy_cb (EV_P_ ev_io *w, int revents) 3146infy_cb (EV_P_ ev_io *w, int revents)
2344{ 3147{
2345 char buf [EV_INOTIFY_BUFSIZE]; 3148 char buf [EV_INOTIFY_BUFSIZE];
2346 struct inotify_event *ev = (struct inotify_event *)buf;
2347 int ofs; 3149 int ofs;
2348 int len = read (fs_fd, buf, sizeof (buf)); 3150 int len = read (fs_fd, buf, sizeof (buf));
2349 3151
2350 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3152 for (ofs = 0; ofs < len; )
3153 {
3154 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2351 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3155 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156 ofs += sizeof (struct inotify_event) + ev->len;
3157 }
2352} 3158}
2353 3159
2354void inline_size 3160inline_size void
3161ev_check_2625 (EV_P)
3162{
3163 /* kernels < 2.6.25 are borked
3164 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3165 */
3166 if (ev_linux_version () < 0x020619)
3167 return;
3168
3169 fs_2625 = 1;
3170}
3171
3172inline_size int
3173infy_newfd (void)
3174{
3175#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3176 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3177 if (fd >= 0)
3178 return fd;
3179#endif
3180 return inotify_init ();
3181}
3182
3183inline_size void
2355infy_init (EV_P) 3184infy_init (EV_P)
2356{ 3185{
2357 if (fs_fd != -2) 3186 if (fs_fd != -2)
2358 return; 3187 return;
2359 3188
3189 fs_fd = -1;
3190
3191 ev_check_2625 (EV_A);
3192
2360 fs_fd = inotify_init (); 3193 fs_fd = infy_newfd ();
2361 3194
2362 if (fs_fd >= 0) 3195 if (fs_fd >= 0)
2363 { 3196 {
3197 fd_intern (fs_fd);
2364 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3198 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2365 ev_set_priority (&fs_w, EV_MAXPRI); 3199 ev_set_priority (&fs_w, EV_MAXPRI);
2366 ev_io_start (EV_A_ &fs_w); 3200 ev_io_start (EV_A_ &fs_w);
3201 ev_unref (EV_A);
2367 } 3202 }
2368} 3203}
2369 3204
2370void inline_size 3205inline_size void
2371infy_fork (EV_P) 3206infy_fork (EV_P)
2372{ 3207{
2373 int slot; 3208 int slot;
2374 3209
2375 if (fs_fd < 0) 3210 if (fs_fd < 0)
2376 return; 3211 return;
2377 3212
3213 ev_ref (EV_A);
3214 ev_io_stop (EV_A_ &fs_w);
2378 close (fs_fd); 3215 close (fs_fd);
2379 fs_fd = inotify_init (); 3216 fs_fd = infy_newfd ();
2380 3217
3218 if (fs_fd >= 0)
3219 {
3220 fd_intern (fs_fd);
3221 ev_io_set (&fs_w, fs_fd, EV_READ);
3222 ev_io_start (EV_A_ &fs_w);
3223 ev_unref (EV_A);
3224 }
3225
2381 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3226 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2382 { 3227 {
2383 WL w_ = fs_hash [slot].head; 3228 WL w_ = fs_hash [slot].head;
2384 fs_hash [slot].head = 0; 3229 fs_hash [slot].head = 0;
2385 3230
2386 while (w_) 3231 while (w_)
… …
2391 w->wd = -1; 3236 w->wd = -1;
2392 3237
2393 if (fs_fd >= 0) 3238 if (fs_fd >= 0)
2394 infy_add (EV_A_ w); /* re-add, no matter what */ 3239 infy_add (EV_A_ w); /* re-add, no matter what */
2395 else 3240 else
3241 {
3242 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3243 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2396 ev_timer_start (EV_A_ &w->timer); 3244 ev_timer_again (EV_A_ &w->timer);
3245 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3246 }
2397 } 3247 }
2398
2399 } 3248 }
2400} 3249}
2401 3250
3251#endif
3252
3253#ifdef _WIN32
3254# define EV_LSTAT(p,b) _stati64 (p, b)
3255#else
3256# define EV_LSTAT(p,b) lstat (p, b)
2402#endif 3257#endif
2403 3258
2404void 3259void
2405ev_stat_stat (EV_P_ ev_stat *w) 3260ev_stat_stat (EV_P_ ev_stat *w)
2406{ 3261{
… …
2413static void noinline 3268static void noinline
2414stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3269stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2415{ 3270{
2416 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3271 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2417 3272
2418 /* we copy this here each the time so that */ 3273 ev_statdata prev = w->attr;
2419 /* prev has the old value when the callback gets invoked */
2420 w->prev = w->attr;
2421 ev_stat_stat (EV_A_ w); 3274 ev_stat_stat (EV_A_ w);
2422 3275
2423 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3276 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2424 if ( 3277 if (
2425 w->prev.st_dev != w->attr.st_dev 3278 prev.st_dev != w->attr.st_dev
2426 || w->prev.st_ino != w->attr.st_ino 3279 || prev.st_ino != w->attr.st_ino
2427 || w->prev.st_mode != w->attr.st_mode 3280 || prev.st_mode != w->attr.st_mode
2428 || w->prev.st_nlink != w->attr.st_nlink 3281 || prev.st_nlink != w->attr.st_nlink
2429 || w->prev.st_uid != w->attr.st_uid 3282 || prev.st_uid != w->attr.st_uid
2430 || w->prev.st_gid != w->attr.st_gid 3283 || prev.st_gid != w->attr.st_gid
2431 || w->prev.st_rdev != w->attr.st_rdev 3284 || prev.st_rdev != w->attr.st_rdev
2432 || w->prev.st_size != w->attr.st_size 3285 || prev.st_size != w->attr.st_size
2433 || w->prev.st_atime != w->attr.st_atime 3286 || prev.st_atime != w->attr.st_atime
2434 || w->prev.st_mtime != w->attr.st_mtime 3287 || prev.st_mtime != w->attr.st_mtime
2435 || w->prev.st_ctime != w->attr.st_ctime 3288 || prev.st_ctime != w->attr.st_ctime
2436 ) { 3289 ) {
3290 /* we only update w->prev on actual differences */
3291 /* in case we test more often than invoke the callback, */
3292 /* to ensure that prev is always different to attr */
3293 w->prev = prev;
3294
2437 #if EV_USE_INOTIFY 3295 #if EV_USE_INOTIFY
3296 if (fs_fd >= 0)
3297 {
2438 infy_del (EV_A_ w); 3298 infy_del (EV_A_ w);
2439 infy_add (EV_A_ w); 3299 infy_add (EV_A_ w);
2440 ev_stat_stat (EV_A_ w); /* avoid race... */ 3300 ev_stat_stat (EV_A_ w); /* avoid race... */
3301 }
2441 #endif 3302 #endif
2442 3303
2443 ev_feed_event (EV_A_ w, EV_STAT); 3304 ev_feed_event (EV_A_ w, EV_STAT);
2444 } 3305 }
2445} 3306}
… …
2448ev_stat_start (EV_P_ ev_stat *w) 3309ev_stat_start (EV_P_ ev_stat *w)
2449{ 3310{
2450 if (expect_false (ev_is_active (w))) 3311 if (expect_false (ev_is_active (w)))
2451 return; 3312 return;
2452 3313
2453 /* since we use memcmp, we need to clear any padding data etc. */
2454 memset (&w->prev, 0, sizeof (ev_statdata));
2455 memset (&w->attr, 0, sizeof (ev_statdata));
2456
2457 ev_stat_stat (EV_A_ w); 3314 ev_stat_stat (EV_A_ w);
2458 3315
3316 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2459 if (w->interval < MIN_STAT_INTERVAL) 3317 w->interval = MIN_STAT_INTERVAL;
2460 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2461 3318
2462 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3319 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2463 ev_set_priority (&w->timer, ev_priority (w)); 3320 ev_set_priority (&w->timer, ev_priority (w));
2464 3321
2465#if EV_USE_INOTIFY 3322#if EV_USE_INOTIFY
2466 infy_init (EV_A); 3323 infy_init (EV_A);
2467 3324
2468 if (fs_fd >= 0) 3325 if (fs_fd >= 0)
2469 infy_add (EV_A_ w); 3326 infy_add (EV_A_ w);
2470 else 3327 else
2471#endif 3328#endif
3329 {
2472 ev_timer_start (EV_A_ &w->timer); 3330 ev_timer_again (EV_A_ &w->timer);
3331 ev_unref (EV_A);
3332 }
2473 3333
2474 ev_start (EV_A_ (W)w, 1); 3334 ev_start (EV_A_ (W)w, 1);
3335
3336 EV_FREQUENT_CHECK;
2475} 3337}
2476 3338
2477void 3339void
2478ev_stat_stop (EV_P_ ev_stat *w) 3340ev_stat_stop (EV_P_ ev_stat *w)
2479{ 3341{
2480 clear_pending (EV_A_ (W)w); 3342 clear_pending (EV_A_ (W)w);
2481 if (expect_false (!ev_is_active (w))) 3343 if (expect_false (!ev_is_active (w)))
2482 return; 3344 return;
2483 3345
3346 EV_FREQUENT_CHECK;
3347
2484#if EV_USE_INOTIFY 3348#if EV_USE_INOTIFY
2485 infy_del (EV_A_ w); 3349 infy_del (EV_A_ w);
2486#endif 3350#endif
3351
3352 if (ev_is_active (&w->timer))
3353 {
3354 ev_ref (EV_A);
2487 ev_timer_stop (EV_A_ &w->timer); 3355 ev_timer_stop (EV_A_ &w->timer);
3356 }
2488 3357
2489 ev_stop (EV_A_ (W)w); 3358 ev_stop (EV_A_ (W)w);
3359
3360 EV_FREQUENT_CHECK;
2490} 3361}
2491#endif 3362#endif
2492 3363
2493#if EV_IDLE_ENABLE 3364#if EV_IDLE_ENABLE
2494void 3365void
… …
2496{ 3367{
2497 if (expect_false (ev_is_active (w))) 3368 if (expect_false (ev_is_active (w)))
2498 return; 3369 return;
2499 3370
2500 pri_adjust (EV_A_ (W)w); 3371 pri_adjust (EV_A_ (W)w);
3372
3373 EV_FREQUENT_CHECK;
2501 3374
2502 { 3375 {
2503 int active = ++idlecnt [ABSPRI (w)]; 3376 int active = ++idlecnt [ABSPRI (w)];
2504 3377
2505 ++idleall; 3378 ++idleall;
2506 ev_start (EV_A_ (W)w, active); 3379 ev_start (EV_A_ (W)w, active);
2507 3380
2508 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3381 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2509 idles [ABSPRI (w)][active - 1] = w; 3382 idles [ABSPRI (w)][active - 1] = w;
2510 } 3383 }
3384
3385 EV_FREQUENT_CHECK;
2511} 3386}
2512 3387
2513void 3388void
2514ev_idle_stop (EV_P_ ev_idle *w) 3389ev_idle_stop (EV_P_ ev_idle *w)
2515{ 3390{
2516 clear_pending (EV_A_ (W)w); 3391 clear_pending (EV_A_ (W)w);
2517 if (expect_false (!ev_is_active (w))) 3392 if (expect_false (!ev_is_active (w)))
2518 return; 3393 return;
2519 3394
3395 EV_FREQUENT_CHECK;
3396
2520 { 3397 {
2521 int active = ev_active (w); 3398 int active = ev_active (w);
2522 3399
2523 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3400 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2524 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3401 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2525 3402
2526 ev_stop (EV_A_ (W)w); 3403 ev_stop (EV_A_ (W)w);
2527 --idleall; 3404 --idleall;
2528 } 3405 }
2529}
2530#endif
2531 3406
3407 EV_FREQUENT_CHECK;
3408}
3409#endif
3410
3411#if EV_PREPARE_ENABLE
2532void 3412void
2533ev_prepare_start (EV_P_ ev_prepare *w) 3413ev_prepare_start (EV_P_ ev_prepare *w)
2534{ 3414{
2535 if (expect_false (ev_is_active (w))) 3415 if (expect_false (ev_is_active (w)))
2536 return; 3416 return;
3417
3418 EV_FREQUENT_CHECK;
2537 3419
2538 ev_start (EV_A_ (W)w, ++preparecnt); 3420 ev_start (EV_A_ (W)w, ++preparecnt);
2539 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3421 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2540 prepares [preparecnt - 1] = w; 3422 prepares [preparecnt - 1] = w;
3423
3424 EV_FREQUENT_CHECK;
2541} 3425}
2542 3426
2543void 3427void
2544ev_prepare_stop (EV_P_ ev_prepare *w) 3428ev_prepare_stop (EV_P_ ev_prepare *w)
2545{ 3429{
2546 clear_pending (EV_A_ (W)w); 3430 clear_pending (EV_A_ (W)w);
2547 if (expect_false (!ev_is_active (w))) 3431 if (expect_false (!ev_is_active (w)))
2548 return; 3432 return;
2549 3433
3434 EV_FREQUENT_CHECK;
3435
2550 { 3436 {
2551 int active = ev_active (w); 3437 int active = ev_active (w);
2552 3438
2553 prepares [active - 1] = prepares [--preparecnt]; 3439 prepares [active - 1] = prepares [--preparecnt];
2554 ev_active (prepares [active - 1]) = active; 3440 ev_active (prepares [active - 1]) = active;
2555 } 3441 }
2556 3442
2557 ev_stop (EV_A_ (W)w); 3443 ev_stop (EV_A_ (W)w);
2558}
2559 3444
3445 EV_FREQUENT_CHECK;
3446}
3447#endif
3448
3449#if EV_CHECK_ENABLE
2560void 3450void
2561ev_check_start (EV_P_ ev_check *w) 3451ev_check_start (EV_P_ ev_check *w)
2562{ 3452{
2563 if (expect_false (ev_is_active (w))) 3453 if (expect_false (ev_is_active (w)))
2564 return; 3454 return;
3455
3456 EV_FREQUENT_CHECK;
2565 3457
2566 ev_start (EV_A_ (W)w, ++checkcnt); 3458 ev_start (EV_A_ (W)w, ++checkcnt);
2567 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3459 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2568 checks [checkcnt - 1] = w; 3460 checks [checkcnt - 1] = w;
3461
3462 EV_FREQUENT_CHECK;
2569} 3463}
2570 3464
2571void 3465void
2572ev_check_stop (EV_P_ ev_check *w) 3466ev_check_stop (EV_P_ ev_check *w)
2573{ 3467{
2574 clear_pending (EV_A_ (W)w); 3468 clear_pending (EV_A_ (W)w);
2575 if (expect_false (!ev_is_active (w))) 3469 if (expect_false (!ev_is_active (w)))
2576 return; 3470 return;
2577 3471
3472 EV_FREQUENT_CHECK;
3473
2578 { 3474 {
2579 int active = ev_active (w); 3475 int active = ev_active (w);
2580 3476
2581 checks [active - 1] = checks [--checkcnt]; 3477 checks [active - 1] = checks [--checkcnt];
2582 ev_active (checks [active - 1]) = active; 3478 ev_active (checks [active - 1]) = active;
2583 } 3479 }
2584 3480
2585 ev_stop (EV_A_ (W)w); 3481 ev_stop (EV_A_ (W)w);
3482
3483 EV_FREQUENT_CHECK;
2586} 3484}
3485#endif
2587 3486
2588#if EV_EMBED_ENABLE 3487#if EV_EMBED_ENABLE
2589void noinline 3488void noinline
2590ev_embed_sweep (EV_P_ ev_embed *w) 3489ev_embed_sweep (EV_P_ ev_embed *w)
2591{ 3490{
2592 ev_loop (w->other, EVLOOP_NONBLOCK); 3491 ev_run (w->other, EVRUN_NOWAIT);
2593} 3492}
2594 3493
2595static void 3494static void
2596embed_io_cb (EV_P_ ev_io *io, int revents) 3495embed_io_cb (EV_P_ ev_io *io, int revents)
2597{ 3496{
2598 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3497 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2599 3498
2600 if (ev_cb (w)) 3499 if (ev_cb (w))
2601 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3500 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2602 else 3501 else
2603 ev_loop (w->other, EVLOOP_NONBLOCK); 3502 ev_run (w->other, EVRUN_NOWAIT);
2604} 3503}
2605 3504
2606static void 3505static void
2607embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3506embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2608{ 3507{
2609 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3508 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2610 3509
2611 { 3510 {
2612 struct ev_loop *loop = w->other; 3511 EV_P = w->other;
2613 3512
2614 while (fdchangecnt) 3513 while (fdchangecnt)
2615 { 3514 {
2616 fd_reify (EV_A); 3515 fd_reify (EV_A);
2617 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3516 ev_run (EV_A_ EVRUN_NOWAIT);
2618 } 3517 }
2619 } 3518 }
3519}
3520
3521static void
3522embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3523{
3524 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3525
3526 ev_embed_stop (EV_A_ w);
3527
3528 {
3529 EV_P = w->other;
3530
3531 ev_loop_fork (EV_A);
3532 ev_run (EV_A_ EVRUN_NOWAIT);
3533 }
3534
3535 ev_embed_start (EV_A_ w);
2620} 3536}
2621 3537
2622#if 0 3538#if 0
2623static void 3539static void
2624embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3540embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2632{ 3548{
2633 if (expect_false (ev_is_active (w))) 3549 if (expect_false (ev_is_active (w)))
2634 return; 3550 return;
2635 3551
2636 { 3552 {
2637 struct ev_loop *loop = w->other; 3553 EV_P = w->other;
2638 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3554 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2639 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3555 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2640 } 3556 }
3557
3558 EV_FREQUENT_CHECK;
2641 3559
2642 ev_set_priority (&w->io, ev_priority (w)); 3560 ev_set_priority (&w->io, ev_priority (w));
2643 ev_io_start (EV_A_ &w->io); 3561 ev_io_start (EV_A_ &w->io);
2644 3562
2645 ev_prepare_init (&w->prepare, embed_prepare_cb); 3563 ev_prepare_init (&w->prepare, embed_prepare_cb);
2646 ev_set_priority (&w->prepare, EV_MINPRI); 3564 ev_set_priority (&w->prepare, EV_MINPRI);
2647 ev_prepare_start (EV_A_ &w->prepare); 3565 ev_prepare_start (EV_A_ &w->prepare);
2648 3566
3567 ev_fork_init (&w->fork, embed_fork_cb);
3568 ev_fork_start (EV_A_ &w->fork);
3569
2649 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3570 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2650 3571
2651 ev_start (EV_A_ (W)w, 1); 3572 ev_start (EV_A_ (W)w, 1);
3573
3574 EV_FREQUENT_CHECK;
2652} 3575}
2653 3576
2654void 3577void
2655ev_embed_stop (EV_P_ ev_embed *w) 3578ev_embed_stop (EV_P_ ev_embed *w)
2656{ 3579{
2657 clear_pending (EV_A_ (W)w); 3580 clear_pending (EV_A_ (W)w);
2658 if (expect_false (!ev_is_active (w))) 3581 if (expect_false (!ev_is_active (w)))
2659 return; 3582 return;
2660 3583
3584 EV_FREQUENT_CHECK;
3585
2661 ev_io_stop (EV_A_ &w->io); 3586 ev_io_stop (EV_A_ &w->io);
2662 ev_prepare_stop (EV_A_ &w->prepare); 3587 ev_prepare_stop (EV_A_ &w->prepare);
3588 ev_fork_stop (EV_A_ &w->fork);
2663 3589
2664 ev_stop (EV_A_ (W)w); 3590 ev_stop (EV_A_ (W)w);
3591
3592 EV_FREQUENT_CHECK;
2665} 3593}
2666#endif 3594#endif
2667 3595
2668#if EV_FORK_ENABLE 3596#if EV_FORK_ENABLE
2669void 3597void
2670ev_fork_start (EV_P_ ev_fork *w) 3598ev_fork_start (EV_P_ ev_fork *w)
2671{ 3599{
2672 if (expect_false (ev_is_active (w))) 3600 if (expect_false (ev_is_active (w)))
2673 return; 3601 return;
3602
3603 EV_FREQUENT_CHECK;
2674 3604
2675 ev_start (EV_A_ (W)w, ++forkcnt); 3605 ev_start (EV_A_ (W)w, ++forkcnt);
2676 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3606 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2677 forks [forkcnt - 1] = w; 3607 forks [forkcnt - 1] = w;
3608
3609 EV_FREQUENT_CHECK;
2678} 3610}
2679 3611
2680void 3612void
2681ev_fork_stop (EV_P_ ev_fork *w) 3613ev_fork_stop (EV_P_ ev_fork *w)
2682{ 3614{
2683 clear_pending (EV_A_ (W)w); 3615 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 3616 if (expect_false (!ev_is_active (w)))
2685 return; 3617 return;
2686 3618
3619 EV_FREQUENT_CHECK;
3620
2687 { 3621 {
2688 int active = ev_active (w); 3622 int active = ev_active (w);
2689 3623
2690 forks [active - 1] = forks [--forkcnt]; 3624 forks [active - 1] = forks [--forkcnt];
2691 ev_active (forks [active - 1]) = active; 3625 ev_active (forks [active - 1]) = active;
2692 } 3626 }
2693 3627
2694 ev_stop (EV_A_ (W)w); 3628 ev_stop (EV_A_ (W)w);
2695}
2696#endif
2697 3629
3630 EV_FREQUENT_CHECK;
3631}
3632#endif
3633
2698#if EV_ASYNC_ENABLE 3634#if EV_CLEANUP_ENABLE
2699void 3635void
2700ev_async_start (EV_P_ ev_async *w) 3636ev_cleanup_start (EV_P_ ev_cleanup *w)
2701{ 3637{
2702 if (expect_false (ev_is_active (w))) 3638 if (expect_false (ev_is_active (w)))
2703 return; 3639 return;
2704 3640
3641 EV_FREQUENT_CHECK;
3642
3643 ev_start (EV_A_ (W)w, ++cleanupcnt);
3644 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3645 cleanups [cleanupcnt - 1] = w;
3646
3647 /* cleanup watchers should never keep a refcount on the loop */
3648 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK;
3650}
3651
3652void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w)
3654{
3655 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w)))
3657 return;
3658
3659 EV_FREQUENT_CHECK;
3660 ev_ref (EV_A);
3661
3662 {
3663 int active = ev_active (w);
3664
3665 cleanups [active - 1] = cleanups [--cleanupcnt];
3666 ev_active (cleanups [active - 1]) = active;
3667 }
3668
3669 ev_stop (EV_A_ (W)w);
3670
3671 EV_FREQUENT_CHECK;
3672}
3673#endif
3674
3675#if EV_ASYNC_ENABLE
3676void
3677ev_async_start (EV_P_ ev_async *w)
3678{
3679 if (expect_false (ev_is_active (w)))
3680 return;
3681
3682 w->sent = 0;
3683
2705 evpipe_init (EV_A); 3684 evpipe_init (EV_A);
3685
3686 EV_FREQUENT_CHECK;
2706 3687
2707 ev_start (EV_A_ (W)w, ++asynccnt); 3688 ev_start (EV_A_ (W)w, ++asynccnt);
2708 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3689 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2709 asyncs [asynccnt - 1] = w; 3690 asyncs [asynccnt - 1] = w;
3691
3692 EV_FREQUENT_CHECK;
2710} 3693}
2711 3694
2712void 3695void
2713ev_async_stop (EV_P_ ev_async *w) 3696ev_async_stop (EV_P_ ev_async *w)
2714{ 3697{
2715 clear_pending (EV_A_ (W)w); 3698 clear_pending (EV_A_ (W)w);
2716 if (expect_false (!ev_is_active (w))) 3699 if (expect_false (!ev_is_active (w)))
2717 return; 3700 return;
2718 3701
3702 EV_FREQUENT_CHECK;
3703
2719 { 3704 {
2720 int active = ev_active (w); 3705 int active = ev_active (w);
2721 3706
2722 asyncs [active - 1] = asyncs [--asynccnt]; 3707 asyncs [active - 1] = asyncs [--asynccnt];
2723 ev_active (asyncs [active - 1]) = active; 3708 ev_active (asyncs [active - 1]) = active;
2724 } 3709 }
2725 3710
2726 ev_stop (EV_A_ (W)w); 3711 ev_stop (EV_A_ (W)w);
3712
3713 EV_FREQUENT_CHECK;
2727} 3714}
2728 3715
2729void 3716void
2730ev_async_send (EV_P_ ev_async *w) 3717ev_async_send (EV_P_ ev_async *w)
2731{ 3718{
2732 w->sent = 1; 3719 w->sent = 1;
2733 evpipe_write (EV_A_ &gotasync); 3720 evpipe_write (EV_A_ &async_pending);
2734} 3721}
2735#endif 3722#endif
2736 3723
2737/*****************************************************************************/ 3724/*****************************************************************************/
2738 3725
… …
2748once_cb (EV_P_ struct ev_once *once, int revents) 3735once_cb (EV_P_ struct ev_once *once, int revents)
2749{ 3736{
2750 void (*cb)(int revents, void *arg) = once->cb; 3737 void (*cb)(int revents, void *arg) = once->cb;
2751 void *arg = once->arg; 3738 void *arg = once->arg;
2752 3739
2753 ev_io_stop (EV_A_ &once->io); 3740 ev_io_stop (EV_A_ &once->io);
2754 ev_timer_stop (EV_A_ &once->to); 3741 ev_timer_stop (EV_A_ &once->to);
2755 ev_free (once); 3742 ev_free (once);
2756 3743
2757 cb (revents, arg); 3744 cb (revents, arg);
2758} 3745}
2759 3746
2760static void 3747static void
2761once_cb_io (EV_P_ ev_io *w, int revents) 3748once_cb_io (EV_P_ ev_io *w, int revents)
2762{ 3749{
2763 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3750 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3751
3752 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2764} 3753}
2765 3754
2766static void 3755static void
2767once_cb_to (EV_P_ ev_timer *w, int revents) 3756once_cb_to (EV_P_ ev_timer *w, int revents)
2768{ 3757{
2769 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3758 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3759
3760 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2770} 3761}
2771 3762
2772void 3763void
2773ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3764ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2774{ 3765{
2775 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3766 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2776 3767
2777 if (expect_false (!once)) 3768 if (expect_false (!once))
2778 { 3769 {
2779 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3770 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2780 return; 3771 return;
2781 } 3772 }
2782 3773
2783 once->cb = cb; 3774 once->cb = cb;
2784 once->arg = arg; 3775 once->arg = arg;
… …
2796 ev_timer_set (&once->to, timeout, 0.); 3787 ev_timer_set (&once->to, timeout, 0.);
2797 ev_timer_start (EV_A_ &once->to); 3788 ev_timer_start (EV_A_ &once->to);
2798 } 3789 }
2799} 3790}
2800 3791
3792/*****************************************************************************/
3793
3794#if EV_WALK_ENABLE
3795void
3796ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3797{
3798 int i, j;
3799 ev_watcher_list *wl, *wn;
3800
3801 if (types & (EV_IO | EV_EMBED))
3802 for (i = 0; i < anfdmax; ++i)
3803 for (wl = anfds [i].head; wl; )
3804 {
3805 wn = wl->next;
3806
3807#if EV_EMBED_ENABLE
3808 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3809 {
3810 if (types & EV_EMBED)
3811 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3812 }
3813 else
3814#endif
3815#if EV_USE_INOTIFY
3816 if (ev_cb ((ev_io *)wl) == infy_cb)
3817 ;
3818 else
3819#endif
3820 if ((ev_io *)wl != &pipe_w)
3821 if (types & EV_IO)
3822 cb (EV_A_ EV_IO, wl);
3823
3824 wl = wn;
3825 }
3826
3827 if (types & (EV_TIMER | EV_STAT))
3828 for (i = timercnt + HEAP0; i-- > HEAP0; )
3829#if EV_STAT_ENABLE
3830 /*TODO: timer is not always active*/
3831 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3832 {
3833 if (types & EV_STAT)
3834 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3835 }
3836 else
3837#endif
3838 if (types & EV_TIMER)
3839 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3840
3841#if EV_PERIODIC_ENABLE
3842 if (types & EV_PERIODIC)
3843 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3844 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3845#endif
3846
3847#if EV_IDLE_ENABLE
3848 if (types & EV_IDLE)
3849 for (j = NUMPRI; i--; )
3850 for (i = idlecnt [j]; i--; )
3851 cb (EV_A_ EV_IDLE, idles [j][i]);
3852#endif
3853
3854#if EV_FORK_ENABLE
3855 if (types & EV_FORK)
3856 for (i = forkcnt; i--; )
3857 if (ev_cb (forks [i]) != embed_fork_cb)
3858 cb (EV_A_ EV_FORK, forks [i]);
3859#endif
3860
3861#if EV_ASYNC_ENABLE
3862 if (types & EV_ASYNC)
3863 for (i = asynccnt; i--; )
3864 cb (EV_A_ EV_ASYNC, asyncs [i]);
3865#endif
3866
3867#if EV_PREPARE_ENABLE
3868 if (types & EV_PREPARE)
3869 for (i = preparecnt; i--; )
3870# if EV_EMBED_ENABLE
3871 if (ev_cb (prepares [i]) != embed_prepare_cb)
3872# endif
3873 cb (EV_A_ EV_PREPARE, prepares [i]);
3874#endif
3875
3876#if EV_CHECK_ENABLE
3877 if (types & EV_CHECK)
3878 for (i = checkcnt; i--; )
3879 cb (EV_A_ EV_CHECK, checks [i]);
3880#endif
3881
3882#if EV_SIGNAL_ENABLE
3883 if (types & EV_SIGNAL)
3884 for (i = 0; i < EV_NSIG - 1; ++i)
3885 for (wl = signals [i].head; wl; )
3886 {
3887 wn = wl->next;
3888 cb (EV_A_ EV_SIGNAL, wl);
3889 wl = wn;
3890 }
3891#endif
3892
3893#if EV_CHILD_ENABLE
3894 if (types & EV_CHILD)
3895 for (i = (EV_PID_HASHSIZE); i--; )
3896 for (wl = childs [i]; wl; )
3897 {
3898 wn = wl->next;
3899 cb (EV_A_ EV_CHILD, wl);
3900 wl = wn;
3901 }
3902#endif
3903/* EV_STAT 0x00001000 /* stat data changed */
3904/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3905}
3906#endif
3907
2801#if EV_MULTIPLICITY 3908#if EV_MULTIPLICITY
2802 #include "ev_wrap.h" 3909 #include "ev_wrap.h"
2803#endif 3910#endif
2804 3911
2805#ifdef __cplusplus 3912EV_CPP(})
2806}
2807#endif
2808 3913

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