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Comparing libev/ev.c (file contents):
Revision 1.243 by root, Fri May 9 15:52:13 2008 UTC vs.
Revision 1.354 by root, Fri Oct 22 09:24:11 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
130# endif 148# endif
131 149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
157# endif
158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
158#else 189#else
190# include <io.h>
159# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 192# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
163# endif 195# endif
196# undef EV_AVOID_STDIO
164#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
165 206
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
167 208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
236
237#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else
241# define EV_USE_CLOCK_SYSCALL 0
242# endif
243#endif
244
168#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else
169# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
250# endif
170#endif 251#endif
171 252
172#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 255#endif
175 256
176#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
258# if _POSIX_C_SOURCE >= 199309L
259# define EV_USE_NANOSLEEP EV_FEATURE_OS
260# else
177# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
262# endif
178#endif 263#endif
179 264
180#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 267#endif
183 268
184#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
185# ifdef _WIN32 270# ifdef _WIN32
186# define EV_USE_POLL 0 271# define EV_USE_POLL 0
187# else 272# else
188# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 274# endif
190#endif 275#endif
191 276
192#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 280# else
196# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
197# endif 282# endif
198#endif 283#endif
199 284
… …
205# define EV_USE_PORT 0 290# define EV_USE_PORT 0
206#endif 291#endif
207 292
208#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 296# else
212# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
213# endif 298# endif
214#endif 299#endif
215 300
216#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 303#endif
223 304
224#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 307#endif
231 308
232#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 312# else
236# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
237# endif 314# endif
238#endif 315#endif
239 316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
322# endif
323#endif
324
325#if 0 /* debugging */
326# define EV_VERIFY 3
327# define EV_USE_4HEAP 1
328# define EV_HEAP_CACHE_AT 1
329#endif
330
331#ifndef EV_VERIFY
332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
333#endif
334
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
… …
267# include <sys/select.h> 382# include <sys/select.h>
268# endif 383# endif
269#endif 384#endif
270 385
271#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/utsname.h>
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#if EV_AVOID_STDIO
529static void noinline
530ev_printerr (const char *msg)
531{
532 write (STDERR_FILENO, msg, strlen (msg));
533}
534#endif
535
353static void (*syserr_cb)(const char *msg); 536static void (*syserr_cb)(const char *msg);
354 537
355void 538void
356ev_set_syserr_cb (void (*cb)(const char *msg)) 539ev_set_syserr_cb (void (*cb)(const char *msg))
357{ 540{
358 syserr_cb = cb; 541 syserr_cb = cb;
359} 542}
360 543
361static void noinline 544static void noinline
362syserr (const char *msg) 545ev_syserr (const char *msg)
363{ 546{
364 if (!msg) 547 if (!msg)
365 msg = "(libev) system error"; 548 msg = "(libev) system error";
366 549
367 if (syserr_cb) 550 if (syserr_cb)
368 syserr_cb (msg); 551 syserr_cb (msg);
369 else 552 else
370 { 553 {
554#if EV_AVOID_STDIO
555 const char *err = strerror (errno);
556
557 ev_printerr (msg);
558 ev_printerr (": ");
559 ev_printerr (err);
560 ev_printerr ("\n");
561#else
371 perror (msg); 562 perror (msg);
563#endif
372 abort (); 564 abort ();
373 } 565 }
374} 566}
375 567
376static void * 568static void *
377ev_realloc_emul (void *ptr, long size) 569ev_realloc_emul (void *ptr, long size)
378{ 570{
571#if __GLIBC__
572 return realloc (ptr, size);
573#else
379 /* some systems, notably openbsd and darwin, fail to properly 574 /* some systems, notably openbsd and darwin, fail to properly
380 * implement realloc (x, 0) (as required by both ansi c-98 and 575 * implement realloc (x, 0) (as required by both ansi c-89 and
381 * the single unix specification, so work around them here. 576 * the single unix specification, so work around them here.
382 */ 577 */
383 578
384 if (size) 579 if (size)
385 return realloc (ptr, size); 580 return realloc (ptr, size);
386 581
387 free (ptr); 582 free (ptr);
388 return 0; 583 return 0;
584#endif
389} 585}
390 586
391static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 587static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
392 588
393void 589void
… …
401{ 597{
402 ptr = alloc (ptr, size); 598 ptr = alloc (ptr, size);
403 599
404 if (!ptr && size) 600 if (!ptr && size)
405 { 601 {
602#if EV_AVOID_STDIO
603 ev_printerr ("libev: memory allocation failed, aborting.\n");
604#else
406 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 605 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
606#endif
407 abort (); 607 abort ();
408 } 608 }
409 609
410 return ptr; 610 return ptr;
411} 611}
… …
413#define ev_malloc(size) ev_realloc (0, (size)) 613#define ev_malloc(size) ev_realloc (0, (size))
414#define ev_free(ptr) ev_realloc ((ptr), 0) 614#define ev_free(ptr) ev_realloc ((ptr), 0)
415 615
416/*****************************************************************************/ 616/*****************************************************************************/
417 617
618/* set in reify when reification needed */
619#define EV_ANFD_REIFY 1
620
621/* file descriptor info structure */
418typedef struct 622typedef struct
419{ 623{
420 WL head; 624 WL head;
421 unsigned char events; 625 unsigned char events; /* the events watched for */
626 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
627 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
422 unsigned char reify; 628 unsigned char unused;
629#if EV_USE_EPOLL
630 unsigned int egen; /* generation counter to counter epoll bugs */
631#endif
423#if EV_SELECT_IS_WINSOCKET 632#if EV_SELECT_IS_WINSOCKET
424 SOCKET handle; 633 SOCKET handle;
425#endif 634#endif
426} ANFD; 635} ANFD;
427 636
637/* stores the pending event set for a given watcher */
428typedef struct 638typedef struct
429{ 639{
430 W w; 640 W w;
431 int events; 641 int events; /* the pending event set for the given watcher */
432} ANPENDING; 642} ANPENDING;
433 643
434#if EV_USE_INOTIFY 644#if EV_USE_INOTIFY
435/* hash table entry per inotify-id */ 645/* hash table entry per inotify-id */
436typedef struct 646typedef struct
… …
439} ANFS; 649} ANFS;
440#endif 650#endif
441 651
442/* Heap Entry */ 652/* Heap Entry */
443#if EV_HEAP_CACHE_AT 653#if EV_HEAP_CACHE_AT
654 /* a heap element */
444 typedef struct { 655 typedef struct {
445 ev_tstamp at; 656 ev_tstamp at;
446 WT w; 657 WT w;
447 } ANHE; 658 } ANHE;
448 659
449 #define ANHE_w(he) (he).w /* access watcher, read-write */ 660 #define ANHE_w(he) (he).w /* access watcher, read-write */
450 #define ANHE_at(he) (he).at /* access cached at, read-only */ 661 #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 */ 662 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452#else 663#else
664 /* a heap element */
453 typedef WT ANHE; 665 typedef WT ANHE;
454 666
455 #define ANHE_w(he) (he) 667 #define ANHE_w(he) (he)
456 #define ANHE_at(he) (he)->at 668 #define ANHE_at(he) (he)->at
457 #define ANHE_at_set(he) 669 #define ANHE_at_cache(he)
458#endif 670#endif
459 671
460#if EV_MULTIPLICITY 672#if EV_MULTIPLICITY
461 673
462 struct ev_loop 674 struct ev_loop
… …
481 693
482 static int ev_default_loop_ptr; 694 static int ev_default_loop_ptr;
483 695
484#endif 696#endif
485 697
698#if EV_FEATURE_API
699# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
700# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
701# define EV_INVOKE_PENDING invoke_cb (EV_A)
702#else
703# define EV_RELEASE_CB (void)0
704# define EV_ACQUIRE_CB (void)0
705# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
706#endif
707
708#define EVBREAK_RECURSE 0x80
709
486/*****************************************************************************/ 710/*****************************************************************************/
487 711
712#ifndef EV_HAVE_EV_TIME
488ev_tstamp 713ev_tstamp
489ev_time (void) 714ev_time (void)
490{ 715{
491#if EV_USE_REALTIME 716#if EV_USE_REALTIME
717 if (expect_true (have_realtime))
718 {
492 struct timespec ts; 719 struct timespec ts;
493 clock_gettime (CLOCK_REALTIME, &ts); 720 clock_gettime (CLOCK_REALTIME, &ts);
494 return ts.tv_sec + ts.tv_nsec * 1e-9; 721 return ts.tv_sec + ts.tv_nsec * 1e-9;
495#else 722 }
723#endif
724
496 struct timeval tv; 725 struct timeval tv;
497 gettimeofday (&tv, 0); 726 gettimeofday (&tv, 0);
498 return tv.tv_sec + tv.tv_usec * 1e-6; 727 return tv.tv_sec + tv.tv_usec * 1e-6;
499#endif
500} 728}
729#endif
501 730
502ev_tstamp inline_size 731inline_size ev_tstamp
503get_clock (void) 732get_clock (void)
504{ 733{
505#if EV_USE_MONOTONIC 734#if EV_USE_MONOTONIC
506 if (expect_true (have_monotonic)) 735 if (expect_true (have_monotonic))
507 { 736 {
… …
528 if (delay > 0.) 757 if (delay > 0.)
529 { 758 {
530#if EV_USE_NANOSLEEP 759#if EV_USE_NANOSLEEP
531 struct timespec ts; 760 struct timespec ts;
532 761
533 ts.tv_sec = (time_t)delay; 762 EV_TS_SET (ts, delay);
534 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
535
536 nanosleep (&ts, 0); 763 nanosleep (&ts, 0);
537#elif defined(_WIN32) 764#elif defined(_WIN32)
538 Sleep ((unsigned long)(delay * 1e3)); 765 Sleep ((unsigned long)(delay * 1e3));
539#else 766#else
540 struct timeval tv; 767 struct timeval tv;
541 768
542 tv.tv_sec = (time_t)delay; 769 /* 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); 770 /* something not guaranteed by newer posix versions, but guaranteed */
544 771 /* by older ones */
772 EV_TV_SET (tv, delay);
545 select (0, 0, 0, 0, &tv); 773 select (0, 0, 0, 0, &tv);
546#endif 774#endif
547 } 775 }
548} 776}
549 777
550/*****************************************************************************/ 778/*****************************************************************************/
551 779
552#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 780#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
553 781
554int inline_size 782/* find a suitable new size for the given array, */
783/* hopefully by rounding to a nice-to-malloc size */
784inline_size int
555array_nextsize (int elem, int cur, int cnt) 785array_nextsize (int elem, int cur, int cnt)
556{ 786{
557 int ncur = cur + 1; 787 int ncur = cur + 1;
558 788
559 do 789 do
… …
576array_realloc (int elem, void *base, int *cur, int cnt) 806array_realloc (int elem, void *base, int *cur, int cnt)
577{ 807{
578 *cur = array_nextsize (elem, *cur, cnt); 808 *cur = array_nextsize (elem, *cur, cnt);
579 return ev_realloc (base, elem * *cur); 809 return ev_realloc (base, elem * *cur);
580} 810}
811
812#define array_init_zero(base,count) \
813 memset ((void *)(base), 0, sizeof (*(base)) * (count))
581 814
582#define array_needsize(type,base,cur,cnt,init) \ 815#define array_needsize(type,base,cur,cnt,init) \
583 if (expect_false ((cnt) > (cur))) \ 816 if (expect_false ((cnt) > (cur))) \
584 { \ 817 { \
585 int ocur_ = (cur); \ 818 int ocur_ = (cur); \
… …
597 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 830 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598 } 831 }
599#endif 832#endif
600 833
601#define array_free(stem, idx) \ 834#define array_free(stem, idx) \
602 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 835 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
603 836
604/*****************************************************************************/ 837/*****************************************************************************/
838
839/* dummy callback for pending events */
840static void noinline
841pendingcb (EV_P_ ev_prepare *w, int revents)
842{
843}
605 844
606void noinline 845void noinline
607ev_feed_event (EV_P_ void *w, int revents) 846ev_feed_event (EV_P_ void *w, int revents)
608{ 847{
609 W w_ = (W)w; 848 W w_ = (W)w;
… …
618 pendings [pri][w_->pending - 1].w = w_; 857 pendings [pri][w_->pending - 1].w = w_;
619 pendings [pri][w_->pending - 1].events = revents; 858 pendings [pri][w_->pending - 1].events = revents;
620 } 859 }
621} 860}
622 861
623void inline_speed 862inline_speed void
863feed_reverse (EV_P_ W w)
864{
865 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
866 rfeeds [rfeedcnt++] = w;
867}
868
869inline_size void
870feed_reverse_done (EV_P_ int revents)
871{
872 do
873 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
874 while (rfeedcnt);
875}
876
877inline_speed void
624queue_events (EV_P_ W *events, int eventcnt, int type) 878queue_events (EV_P_ W *events, int eventcnt, int type)
625{ 879{
626 int i; 880 int i;
627 881
628 for (i = 0; i < eventcnt; ++i) 882 for (i = 0; i < eventcnt; ++i)
629 ev_feed_event (EV_A_ events [i], type); 883 ev_feed_event (EV_A_ events [i], type);
630} 884}
631 885
632/*****************************************************************************/ 886/*****************************************************************************/
633 887
634void inline_size 888inline_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) 889fd_event_nocheck (EV_P_ int fd, int revents)
649{ 890{
650 ANFD *anfd = anfds + fd; 891 ANFD *anfd = anfds + fd;
651 ev_io *w; 892 ev_io *w;
652 893
653 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 894 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
657 if (ev) 898 if (ev)
658 ev_feed_event (EV_A_ (W)w, ev); 899 ev_feed_event (EV_A_ (W)w, ev);
659 } 900 }
660} 901}
661 902
903/* do not submit kernel events for fds that have reify set */
904/* because that means they changed while we were polling for new events */
905inline_speed void
906fd_event (EV_P_ int fd, int revents)
907{
908 ANFD *anfd = anfds + fd;
909
910 if (expect_true (!anfd->reify))
911 fd_event_nocheck (EV_A_ fd, revents);
912}
913
662void 914void
663ev_feed_fd_event (EV_P_ int fd, int revents) 915ev_feed_fd_event (EV_P_ int fd, int revents)
664{ 916{
665 if (fd >= 0 && fd < anfdmax) 917 if (fd >= 0 && fd < anfdmax)
666 fd_event (EV_A_ fd, revents); 918 fd_event_nocheck (EV_A_ fd, revents);
667} 919}
668 920
669void inline_size 921/* make sure the external fd watch events are in-sync */
922/* with the kernel/libev internal state */
923inline_size void
670fd_reify (EV_P) 924fd_reify (EV_P)
671{ 925{
672 int i; 926 int i;
673 927
674 for (i = 0; i < fdchangecnt; ++i) 928 for (i = 0; i < fdchangecnt; ++i)
675 { 929 {
676 int fd = fdchanges [i]; 930 int fd = fdchanges [i];
677 ANFD *anfd = anfds + fd; 931 ANFD *anfd = anfds + fd;
678 ev_io *w; 932 ev_io *w;
679 933
680 unsigned char events = 0; 934 unsigned char o_events = anfd->events;
935 unsigned char o_reify = anfd->reify;
681 936
682 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 937 anfd->reify = 0;
683 events |= (unsigned char)w->events;
684 938
685#if EV_SELECT_IS_WINSOCKET 939#if EV_SELECT_IS_WINSOCKET
686 if (events) 940 if (o_reify & EV__IOFDSET)
687 { 941 {
688 unsigned long argp; 942 unsigned long arg;
689 #ifdef EV_FD_TO_WIN32_HANDLE
690 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 943 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
691 #else
692 anfd->handle = _get_osfhandle (fd);
693 #endif
694 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 944 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
695 } 945 }
696#endif 946#endif
697 947
948 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
698 { 949 {
699 unsigned char o_events = anfd->events;
700 unsigned char o_reify = anfd->reify;
701
702 anfd->reify = 0;
703 anfd->events = events; 950 anfd->events = 0;
704 951
705 if (o_events != events || o_reify & EV_IOFDSET) 952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
953 anfd->events |= (unsigned char)w->events;
954
955 if (o_events != anfd->events)
956 o_reify = EV__IOFDSET; /* actually |= */
957 }
958
959 if (o_reify & EV__IOFDSET)
706 backend_modify (EV_A_ fd, o_events, events); 960 backend_modify (EV_A_ fd, o_events, anfd->events);
707 }
708 } 961 }
709 962
710 fdchangecnt = 0; 963 fdchangecnt = 0;
711} 964}
712 965
713void inline_size 966/* something about the given fd changed */
967inline_size void
714fd_change (EV_P_ int fd, int flags) 968fd_change (EV_P_ int fd, int flags)
715{ 969{
716 unsigned char reify = anfds [fd].reify; 970 unsigned char reify = anfds [fd].reify;
717 anfds [fd].reify |= flags; 971 anfds [fd].reify |= flags;
718 972
… …
722 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 976 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
723 fdchanges [fdchangecnt - 1] = fd; 977 fdchanges [fdchangecnt - 1] = fd;
724 } 978 }
725} 979}
726 980
727void inline_speed 981/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
982inline_speed void
728fd_kill (EV_P_ int fd) 983fd_kill (EV_P_ int fd)
729{ 984{
730 ev_io *w; 985 ev_io *w;
731 986
732 while ((w = (ev_io *)anfds [fd].head)) 987 while ((w = (ev_io *)anfds [fd].head))
… …
734 ev_io_stop (EV_A_ w); 989 ev_io_stop (EV_A_ w);
735 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 990 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
736 } 991 }
737} 992}
738 993
739int inline_size 994/* check whether the given fd is actually valid, for error recovery */
995inline_size int
740fd_valid (int fd) 996fd_valid (int fd)
741{ 997{
742#ifdef _WIN32 998#ifdef _WIN32
743 return _get_osfhandle (fd) != -1; 999 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
744#else 1000#else
745 return fcntl (fd, F_GETFD) != -1; 1001 return fcntl (fd, F_GETFD) != -1;
746#endif 1002#endif
747} 1003}
748 1004
… …
752{ 1008{
753 int fd; 1009 int fd;
754 1010
755 for (fd = 0; fd < anfdmax; ++fd) 1011 for (fd = 0; fd < anfdmax; ++fd)
756 if (anfds [fd].events) 1012 if (anfds [fd].events)
757 if (!fd_valid (fd) == -1 && errno == EBADF) 1013 if (!fd_valid (fd) && errno == EBADF)
758 fd_kill (EV_A_ fd); 1014 fd_kill (EV_A_ fd);
759} 1015}
760 1016
761/* called on ENOMEM in select/poll to kill some fds and retry */ 1017/* called on ENOMEM in select/poll to kill some fds and retry */
762static void noinline 1018static void noinline
… …
766 1022
767 for (fd = anfdmax; fd--; ) 1023 for (fd = anfdmax; fd--; )
768 if (anfds [fd].events) 1024 if (anfds [fd].events)
769 { 1025 {
770 fd_kill (EV_A_ fd); 1026 fd_kill (EV_A_ fd);
771 return; 1027 break;
772 } 1028 }
773} 1029}
774 1030
775/* usually called after fork if backend needs to re-arm all fds from scratch */ 1031/* usually called after fork if backend needs to re-arm all fds from scratch */
776static void noinline 1032static void noinline
… …
780 1036
781 for (fd = 0; fd < anfdmax; ++fd) 1037 for (fd = 0; fd < anfdmax; ++fd)
782 if (anfds [fd].events) 1038 if (anfds [fd].events)
783 { 1039 {
784 anfds [fd].events = 0; 1040 anfds [fd].events = 0;
1041 anfds [fd].emask = 0;
785 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1042 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
786 } 1043 }
787} 1044}
788 1045
1046/* used to prepare libev internal fd's */
1047/* this is not fork-safe */
1048inline_speed void
1049fd_intern (int fd)
1050{
1051#ifdef _WIN32
1052 unsigned long arg = 1;
1053 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1054#else
1055 fcntl (fd, F_SETFD, FD_CLOEXEC);
1056 fcntl (fd, F_SETFL, O_NONBLOCK);
1057#endif
1058}
1059
789/*****************************************************************************/ 1060/*****************************************************************************/
790 1061
791/* 1062/*
792 * the heap functions want a real array index. array index 0 uis guaranteed to not 1063 * 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 1064 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
794 * the branching factor of the d-tree. 1065 * the branching factor of the d-tree.
795 */ 1066 */
796 1067
797/* 1068/*
… …
802 */ 1073 */
803#if EV_USE_4HEAP 1074#if EV_USE_4HEAP
804 1075
805#define DHEAP 4 1076#define DHEAP 4
806#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1077#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807 1078#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808/* towards the root */ 1079#define UPHEAP_DONE(p,k) ((p) == (k))
809void inline_speed
810upheap (ANHE *heap, int k)
811{
812 ANHE he = heap [k];
813
814 for (;;)
815 {
816 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
817
818 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
819 break;
820
821 heap [k] = heap [p];
822 ev_active (ANHE_w (heap [k])) = k;
823 k = p;
824 }
825
826 ev_active (ANHE_w (he)) = k;
827 heap [k] = he;
828}
829 1080
830/* away from the root */ 1081/* away from the root */
831void inline_speed 1082inline_speed void
832downheap (ANHE *heap, int N, int k) 1083downheap (ANHE *heap, int N, int k)
833{ 1084{
834 ANHE he = heap [k]; 1085 ANHE he = heap [k];
835 ANHE *E = heap + N + HEAP0; 1086 ANHE *E = heap + N + HEAP0;
836 1087
837 for (;;) 1088 for (;;)
838 { 1089 {
839 ev_tstamp minat; 1090 ev_tstamp minat;
840 ANHE *minpos; 1091 ANHE *minpos;
841 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1092 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
842 1093
843 // find minimum child 1094 /* find minimum child */
844 if (expect_true (pos + DHEAP - 1 < E)) 1095 if (expect_true (pos + DHEAP - 1 < E))
845 { 1096 {
846 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1097 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847 if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1098 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
848 if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 1099 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
849 if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 1100 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
850 } 1101 }
851 else if (pos < E) 1102 else if (pos < E)
852 { 1103 {
853 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1104 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
854 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1105 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
… …
859 break; 1110 break;
860 1111
861 if (ANHE_at (he) <= minat) 1112 if (ANHE_at (he) <= minat)
862 break; 1113 break;
863 1114
1115 heap [k] = *minpos;
864 ev_active (ANHE_w (*minpos)) = k; 1116 ev_active (ANHE_w (*minpos)) = k;
865 heap [k] = *minpos;
866 1117
867 k = minpos - heap; 1118 k = minpos - heap;
868 } 1119 }
869 1120
1121 heap [k] = he;
870 ev_active (ANHE_w (he)) = k; 1122 ev_active (ANHE_w (he)) = k;
871 heap [k] = he;
872} 1123}
873 1124
874#else // 4HEAP 1125#else /* 4HEAP */
875 1126
876#define HEAP0 1 1127#define HEAP0 1
1128#define HPARENT(k) ((k) >> 1)
1129#define UPHEAP_DONE(p,k) (!(p))
877 1130
878/* towards the root */ 1131/* away from the root */
879void inline_speed 1132inline_speed void
880upheap (ANHE *heap, int k) 1133downheap (ANHE *heap, int N, int k)
881{ 1134{
882 ANHE he = heap [k]; 1135 ANHE he = heap [k];
883 1136
884 for (;;) 1137 for (;;)
885 { 1138 {
886 int p = k >> 1; 1139 int c = k << 1;
887 1140
888 /* maybe we could use a dummy element at heap [0]? */ 1141 if (c >= N + HEAP0)
889 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
890 break; 1142 break;
891 1143
892 heap [k] = heap [p];
893 ev_active (ANHE_w (heap [k])) = k;
894 k = p;
895 }
896
897 heap [k] = he;
898 ev_active (ANHE_w (heap [k])) = k;
899}
900
901/* away from the root */
902void inline_speed
903downheap (ANHE *heap, int N, int k)
904{
905 ANHE he = heap [k];
906
907 for (;;)
908 {
909 int c = k << 1;
910
911 if (c > N)
912 break;
913
914 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1144 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
915 ? 1 : 0; 1145 ? 1 : 0;
916 1146
917 if (ANHE_at (he) <= ANHE_at (heap [c])) 1147 if (ANHE_at (he) <= ANHE_at (heap [c]))
918 break; 1148 break;
919 1149
… …
926 heap [k] = he; 1156 heap [k] = he;
927 ev_active (ANHE_w (he)) = k; 1157 ev_active (ANHE_w (he)) = k;
928} 1158}
929#endif 1159#endif
930 1160
931void inline_size 1161/* towards the root */
1162inline_speed void
1163upheap (ANHE *heap, int k)
1164{
1165 ANHE he = heap [k];
1166
1167 for (;;)
1168 {
1169 int p = HPARENT (k);
1170
1171 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1172 break;
1173
1174 heap [k] = heap [p];
1175 ev_active (ANHE_w (heap [k])) = k;
1176 k = p;
1177 }
1178
1179 heap [k] = he;
1180 ev_active (ANHE_w (he)) = k;
1181}
1182
1183/* move an element suitably so it is in a correct place */
1184inline_size void
932adjustheap (ANHE *heap, int N, int k) 1185adjustheap (ANHE *heap, int N, int k)
933{ 1186{
1187 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
934 upheap (heap, k); 1188 upheap (heap, k);
1189 else
935 downheap (heap, N, k); 1190 downheap (heap, N, k);
1191}
1192
1193/* rebuild the heap: this function is used only once and executed rarely */
1194inline_size void
1195reheap (ANHE *heap, int N)
1196{
1197 int i;
1198
1199 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1200 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1201 for (i = 0; i < N; ++i)
1202 upheap (heap, i + HEAP0);
936} 1203}
937 1204
938/*****************************************************************************/ 1205/*****************************************************************************/
939 1206
1207/* associate signal watchers to a signal signal */
940typedef struct 1208typedef struct
941{ 1209{
1210 EV_ATOMIC_T pending;
1211#if EV_MULTIPLICITY
1212 EV_P;
1213#endif
942 WL head; 1214 WL head;
943 EV_ATOMIC_T gotsig;
944} ANSIG; 1215} ANSIG;
945 1216
946static ANSIG *signals; 1217static ANSIG signals [EV_NSIG - 1];
947static int signalmax;
948
949static EV_ATOMIC_T gotsig;
950
951void inline_size
952signals_init (ANSIG *base, int count)
953{
954 while (count--)
955 {
956 base->head = 0;
957 base->gotsig = 0;
958
959 ++base;
960 }
961}
962 1218
963/*****************************************************************************/ 1219/*****************************************************************************/
964 1220
965void inline_speed 1221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
966fd_intern (int fd)
967{
968#ifdef _WIN32
969 int arg = 1;
970 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
971#else
972 fcntl (fd, F_SETFD, FD_CLOEXEC);
973 fcntl (fd, F_SETFL, O_NONBLOCK);
974#endif
975}
976 1222
977static void noinline 1223static void noinline
978evpipe_init (EV_P) 1224evpipe_init (EV_P)
979{ 1225{
980 if (!ev_is_active (&pipeev)) 1226 if (!ev_is_active (&pipe_w))
981 { 1227 {
982#if EV_USE_EVENTFD 1228# if EV_USE_EVENTFD
1229 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1230 if (evfd < 0 && errno == EINVAL)
983 if ((evfd = eventfd (0, 0)) >= 0) 1231 evfd = eventfd (0, 0);
1232
1233 if (evfd >= 0)
984 { 1234 {
985 evpipe [0] = -1; 1235 evpipe [0] = -1;
986 fd_intern (evfd); 1236 fd_intern (evfd); /* doing it twice doesn't hurt */
987 ev_io_set (&pipeev, evfd, EV_READ); 1237 ev_io_set (&pipe_w, evfd, EV_READ);
988 } 1238 }
989 else 1239 else
990#endif 1240# endif
991 { 1241 {
992 while (pipe (evpipe)) 1242 while (pipe (evpipe))
993 syserr ("(libev) error creating signal/async pipe"); 1243 ev_syserr ("(libev) error creating signal/async pipe");
994 1244
995 fd_intern (evpipe [0]); 1245 fd_intern (evpipe [0]);
996 fd_intern (evpipe [1]); 1246 fd_intern (evpipe [1]);
997 ev_io_set (&pipeev, evpipe [0], EV_READ); 1247 ev_io_set (&pipe_w, evpipe [0], EV_READ);
998 } 1248 }
999 1249
1000 ev_io_start (EV_A_ &pipeev); 1250 ev_io_start (EV_A_ &pipe_w);
1001 ev_unref (EV_A); /* watcher should not keep loop alive */ 1251 ev_unref (EV_A); /* watcher should not keep loop alive */
1002 } 1252 }
1003} 1253}
1004 1254
1005void inline_size 1255inline_size void
1006evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1256evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1007{ 1257{
1008 if (!*flag) 1258 if (!*flag)
1009 { 1259 {
1010 int old_errno = errno; /* save errno because write might clobber it */ 1260 int old_errno = errno; /* save errno because write might clobber it */
1261 char dummy;
1011 1262
1012 *flag = 1; 1263 *flag = 1;
1013 1264
1014#if EV_USE_EVENTFD 1265#if EV_USE_EVENTFD
1015 if (evfd >= 0) 1266 if (evfd >= 0)
… …
1017 uint64_t counter = 1; 1268 uint64_t counter = 1;
1018 write (evfd, &counter, sizeof (uint64_t)); 1269 write (evfd, &counter, sizeof (uint64_t));
1019 } 1270 }
1020 else 1271 else
1021#endif 1272#endif
1273 /* win32 people keep sending patches that change this write() to send() */
1274 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1275 /* so when you think this write should be a send instead, please find out */
1276 /* where your send() is from - it's definitely not the microsoft send, and */
1277 /* tell me. thank you. */
1022 write (evpipe [1], &old_errno, 1); 1278 write (evpipe [1], &dummy, 1);
1023 1279
1024 errno = old_errno; 1280 errno = old_errno;
1025 } 1281 }
1026} 1282}
1027 1283
1284/* called whenever the libev signal pipe */
1285/* got some events (signal, async) */
1028static void 1286static void
1029pipecb (EV_P_ ev_io *iow, int revents) 1287pipecb (EV_P_ ev_io *iow, int revents)
1030{ 1288{
1289 int i;
1290
1031#if EV_USE_EVENTFD 1291#if EV_USE_EVENTFD
1032 if (evfd >= 0) 1292 if (evfd >= 0)
1033 { 1293 {
1034 uint64_t counter; 1294 uint64_t counter;
1035 read (evfd, &counter, sizeof (uint64_t)); 1295 read (evfd, &counter, sizeof (uint64_t));
1036 } 1296 }
1037 else 1297 else
1038#endif 1298#endif
1039 { 1299 {
1040 char dummy; 1300 char dummy;
1301 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1041 read (evpipe [0], &dummy, 1); 1302 read (evpipe [0], &dummy, 1);
1042 } 1303 }
1043 1304
1044 if (gotsig && ev_is_default_loop (EV_A)) 1305 if (sig_pending)
1045 { 1306 {
1046 int signum; 1307 sig_pending = 0;
1047 gotsig = 0;
1048 1308
1049 for (signum = signalmax; signum--; ) 1309 for (i = EV_NSIG - 1; i--; )
1050 if (signals [signum].gotsig) 1310 if (expect_false (signals [i].pending))
1051 ev_feed_signal_event (EV_A_ signum + 1); 1311 ev_feed_signal_event (EV_A_ i + 1);
1052 } 1312 }
1053 1313
1054#if EV_ASYNC_ENABLE 1314#if EV_ASYNC_ENABLE
1055 if (gotasync) 1315 if (async_pending)
1056 { 1316 {
1057 int i; 1317 async_pending = 0;
1058 gotasync = 0;
1059 1318
1060 for (i = asynccnt; i--; ) 1319 for (i = asynccnt; i--; )
1061 if (asyncs [i]->sent) 1320 if (asyncs [i]->sent)
1062 { 1321 {
1063 asyncs [i]->sent = 0; 1322 asyncs [i]->sent = 0;
… …
1071 1330
1072static void 1331static void
1073ev_sighandler (int signum) 1332ev_sighandler (int signum)
1074{ 1333{
1075#if EV_MULTIPLICITY 1334#if EV_MULTIPLICITY
1076 struct ev_loop *loop = &default_loop_struct; 1335 EV_P = signals [signum - 1].loop;
1077#endif 1336#endif
1078 1337
1079#if _WIN32 1338#ifdef _WIN32
1080 signal (signum, ev_sighandler); 1339 signal (signum, ev_sighandler);
1081#endif 1340#endif
1082 1341
1083 signals [signum - 1].gotsig = 1; 1342 signals [signum - 1].pending = 1;
1084 evpipe_write (EV_A_ &gotsig); 1343 evpipe_write (EV_A_ &sig_pending);
1085} 1344}
1086 1345
1087void noinline 1346void noinline
1088ev_feed_signal_event (EV_P_ int signum) 1347ev_feed_signal_event (EV_P_ int signum)
1089{ 1348{
1090 WL w; 1349 WL w;
1091 1350
1351 if (expect_false (signum <= 0 || signum > EV_NSIG))
1352 return;
1353
1354 --signum;
1355
1092#if EV_MULTIPLICITY 1356#if EV_MULTIPLICITY
1093 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1357 /* it is permissible to try to feed a signal to the wrong loop */
1094#endif 1358 /* or, likely more useful, feeding a signal nobody is waiting for */
1095 1359
1096 --signum; 1360 if (expect_false (signals [signum].loop != EV_A))
1097
1098 if (signum < 0 || signum >= signalmax)
1099 return; 1361 return;
1362#endif
1100 1363
1101 signals [signum].gotsig = 0; 1364 signals [signum].pending = 0;
1102 1365
1103 for (w = signals [signum].head; w; w = w->next) 1366 for (w = signals [signum].head; w; w = w->next)
1104 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1367 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1105} 1368}
1106 1369
1370#if EV_USE_SIGNALFD
1371static void
1372sigfdcb (EV_P_ ev_io *iow, int revents)
1373{
1374 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1375
1376 for (;;)
1377 {
1378 ssize_t res = read (sigfd, si, sizeof (si));
1379
1380 /* not ISO-C, as res might be -1, but works with SuS */
1381 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1382 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1383
1384 if (res < (ssize_t)sizeof (si))
1385 break;
1386 }
1387}
1388#endif
1389
1390#endif
1391
1107/*****************************************************************************/ 1392/*****************************************************************************/
1108 1393
1394#if EV_CHILD_ENABLE
1109static WL childs [EV_PID_HASHSIZE]; 1395static WL childs [EV_PID_HASHSIZE];
1110
1111#ifndef _WIN32
1112 1396
1113static ev_signal childev; 1397static ev_signal childev;
1114 1398
1115#ifndef WIFCONTINUED 1399#ifndef WIFCONTINUED
1116# define WIFCONTINUED(status) 0 1400# define WIFCONTINUED(status) 0
1117#endif 1401#endif
1118 1402
1119void inline_speed 1403/* handle a single child status event */
1404inline_speed void
1120child_reap (EV_P_ int chain, int pid, int status) 1405child_reap (EV_P_ int chain, int pid, int status)
1121{ 1406{
1122 ev_child *w; 1407 ev_child *w;
1123 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1408 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1124 1409
1125 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1410 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1126 { 1411 {
1127 if ((w->pid == pid || !w->pid) 1412 if ((w->pid == pid || !w->pid)
1128 && (!traced || (w->flags & 1))) 1413 && (!traced || (w->flags & 1)))
1129 { 1414 {
1130 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1415 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1137 1422
1138#ifndef WCONTINUED 1423#ifndef WCONTINUED
1139# define WCONTINUED 0 1424# define WCONTINUED 0
1140#endif 1425#endif
1141 1426
1427/* called on sigchld etc., calls waitpid */
1142static void 1428static void
1143childcb (EV_P_ ev_signal *sw, int revents) 1429childcb (EV_P_ ev_signal *sw, int revents)
1144{ 1430{
1145 int pid, status; 1431 int pid, status;
1146 1432
… …
1154 /* make sure we are called again until all children have been reaped */ 1440 /* make sure we are called again until all children have been reaped */
1155 /* we need to do it this way so that the callback gets called before we continue */ 1441 /* we need to do it this way so that the callback gets called before we continue */
1156 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1442 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1157 1443
1158 child_reap (EV_A_ pid, pid, status); 1444 child_reap (EV_A_ pid, pid, status);
1159 if (EV_PID_HASHSIZE > 1) 1445 if ((EV_PID_HASHSIZE) > 1)
1160 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1446 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1161} 1447}
1162 1448
1163#endif 1449#endif
1164 1450
… …
1227 /* kqueue is borked on everything but netbsd apparently */ 1513 /* kqueue is borked on everything but netbsd apparently */
1228 /* it usually doesn't work correctly on anything but sockets and pipes */ 1514 /* it usually doesn't work correctly on anything but sockets and pipes */
1229 flags &= ~EVBACKEND_KQUEUE; 1515 flags &= ~EVBACKEND_KQUEUE;
1230#endif 1516#endif
1231#ifdef __APPLE__ 1517#ifdef __APPLE__
1232 // flags &= ~EVBACKEND_KQUEUE; for documentation 1518 /* only select works correctly on that "unix-certified" platform */
1233 flags &= ~EVBACKEND_POLL; 1519 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1520 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1521#endif
1522#ifdef __FreeBSD__
1523 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1234#endif 1524#endif
1235 1525
1236 return flags; 1526 return flags;
1237} 1527}
1238 1528
… …
1252ev_backend (EV_P) 1542ev_backend (EV_P)
1253{ 1543{
1254 return backend; 1544 return backend;
1255} 1545}
1256 1546
1547#if EV_FEATURE_API
1257unsigned int 1548unsigned int
1258ev_loop_count (EV_P) 1549ev_iteration (EV_P)
1259{ 1550{
1260 return loop_count; 1551 return loop_count;
1261} 1552}
1262 1553
1554unsigned int
1555ev_depth (EV_P)
1556{
1557 return loop_depth;
1558}
1559
1263void 1560void
1264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1561ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1265{ 1562{
1266 io_blocktime = interval; 1563 io_blocktime = interval;
1267} 1564}
… …
1270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1271{ 1568{
1272 timeout_blocktime = interval; 1569 timeout_blocktime = interval;
1273} 1570}
1274 1571
1572void
1573ev_set_userdata (EV_P_ void *data)
1574{
1575 userdata = data;
1576}
1577
1578void *
1579ev_userdata (EV_P)
1580{
1581 return userdata;
1582}
1583
1584void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1585{
1586 invoke_cb = invoke_pending_cb;
1587}
1588
1589void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1590{
1591 release_cb = release;
1592 acquire_cb = acquire;
1593}
1594#endif
1595
1596/* initialise a loop structure, must be zero-initialised */
1275static void noinline 1597static void noinline
1276loop_init (EV_P_ unsigned int flags) 1598loop_init (EV_P_ unsigned int flags)
1277{ 1599{
1278 if (!backend) 1600 if (!backend)
1279 { 1601 {
1602#if EV_USE_REALTIME
1603 if (!have_realtime)
1604 {
1605 struct timespec ts;
1606
1607 if (!clock_gettime (CLOCK_REALTIME, &ts))
1608 have_realtime = 1;
1609 }
1610#endif
1611
1280#if EV_USE_MONOTONIC 1612#if EV_USE_MONOTONIC
1613 if (!have_monotonic)
1281 { 1614 {
1282 struct timespec ts; 1615 struct timespec ts;
1616
1283 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1617 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1284 have_monotonic = 1; 1618 have_monotonic = 1;
1285 } 1619 }
1286#endif 1620#endif
1621
1622 /* pid check not overridable via env */
1623#ifndef _WIN32
1624 if (flags & EVFLAG_FORKCHECK)
1625 curpid = getpid ();
1626#endif
1627
1628 if (!(flags & EVFLAG_NOENV)
1629 && !enable_secure ()
1630 && getenv ("LIBEV_FLAGS"))
1631 flags = atoi (getenv ("LIBEV_FLAGS"));
1287 1632
1288 ev_rt_now = ev_time (); 1633 ev_rt_now = ev_time ();
1289 mn_now = get_clock (); 1634 mn_now = get_clock ();
1290 now_floor = mn_now; 1635 now_floor = mn_now;
1291 rtmn_diff = ev_rt_now - mn_now; 1636 rtmn_diff = ev_rt_now - mn_now;
1637#if EV_FEATURE_API
1638 invoke_cb = ev_invoke_pending;
1639#endif
1292 1640
1293 io_blocktime = 0.; 1641 io_blocktime = 0.;
1294 timeout_blocktime = 0.; 1642 timeout_blocktime = 0.;
1295 backend = 0; 1643 backend = 0;
1296 backend_fd = -1; 1644 backend_fd = -1;
1297 gotasync = 0; 1645 sig_pending = 0;
1646#if EV_ASYNC_ENABLE
1647 async_pending = 0;
1648#endif
1298#if EV_USE_INOTIFY 1649#if EV_USE_INOTIFY
1299 fs_fd = -2; 1650 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1300#endif 1651#endif
1301 1652#if EV_USE_SIGNALFD
1302 /* pid check not overridable via env */ 1653 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1303#ifndef _WIN32
1304 if (flags & EVFLAG_FORKCHECK)
1305 curpid = getpid ();
1306#endif 1654#endif
1307
1308 if (!(flags & EVFLAG_NOENV)
1309 && !enable_secure ()
1310 && getenv ("LIBEV_FLAGS"))
1311 flags = atoi (getenv ("LIBEV_FLAGS"));
1312 1655
1313 if (!(flags & 0x0000ffffU)) 1656 if (!(flags & 0x0000ffffU))
1314 flags |= ev_recommended_backends (); 1657 flags |= ev_recommended_backends ();
1315 1658
1316#if EV_USE_PORT 1659#if EV_USE_PORT
… …
1327#endif 1670#endif
1328#if EV_USE_SELECT 1671#if EV_USE_SELECT
1329 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1672 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1330#endif 1673#endif
1331 1674
1675 ev_prepare_init (&pending_w, pendingcb);
1676
1677#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1332 ev_init (&pipeev, pipecb); 1678 ev_init (&pipe_w, pipecb);
1333 ev_set_priority (&pipeev, EV_MAXPRI); 1679 ev_set_priority (&pipe_w, EV_MAXPRI);
1680#endif
1334 } 1681 }
1335} 1682}
1336 1683
1684/* free up a loop structure */
1337static void noinline 1685static void noinline
1338loop_destroy (EV_P) 1686loop_destroy (EV_P)
1339{ 1687{
1340 int i; 1688 int i;
1341 1689
1342 if (ev_is_active (&pipeev)) 1690 if (ev_is_active (&pipe_w))
1343 { 1691 {
1344 ev_ref (EV_A); /* signal watcher */ 1692 /*ev_ref (EV_A);*/
1345 ev_io_stop (EV_A_ &pipeev); 1693 /*ev_io_stop (EV_A_ &pipe_w);*/
1346 1694
1347#if EV_USE_EVENTFD 1695#if EV_USE_EVENTFD
1348 if (evfd >= 0) 1696 if (evfd >= 0)
1349 close (evfd); 1697 close (evfd);
1350#endif 1698#endif
1351 1699
1352 if (evpipe [0] >= 0) 1700 if (evpipe [0] >= 0)
1353 { 1701 {
1354 close (evpipe [0]); 1702 EV_WIN32_CLOSE_FD (evpipe [0]);
1355 close (evpipe [1]); 1703 EV_WIN32_CLOSE_FD (evpipe [1]);
1356 } 1704 }
1357 } 1705 }
1706
1707#if EV_USE_SIGNALFD
1708 if (ev_is_active (&sigfd_w))
1709 close (sigfd);
1710#endif
1358 1711
1359#if EV_USE_INOTIFY 1712#if EV_USE_INOTIFY
1360 if (fs_fd >= 0) 1713 if (fs_fd >= 0)
1361 close (fs_fd); 1714 close (fs_fd);
1362#endif 1715#endif
… …
1386#if EV_IDLE_ENABLE 1739#if EV_IDLE_ENABLE
1387 array_free (idle, [i]); 1740 array_free (idle, [i]);
1388#endif 1741#endif
1389 } 1742 }
1390 1743
1391 ev_free (anfds); anfdmax = 0; 1744 ev_free (anfds); anfds = 0; anfdmax = 0;
1392 1745
1393 /* have to use the microsoft-never-gets-it-right macro */ 1746 /* have to use the microsoft-never-gets-it-right macro */
1747 array_free (rfeed, EMPTY);
1394 array_free (fdchange, EMPTY); 1748 array_free (fdchange, EMPTY);
1395 array_free (timer, EMPTY); 1749 array_free (timer, EMPTY);
1396#if EV_PERIODIC_ENABLE 1750#if EV_PERIODIC_ENABLE
1397 array_free (periodic, EMPTY); 1751 array_free (periodic, EMPTY);
1398#endif 1752#endif
… …
1407 1761
1408 backend = 0; 1762 backend = 0;
1409} 1763}
1410 1764
1411#if EV_USE_INOTIFY 1765#if EV_USE_INOTIFY
1412void inline_size infy_fork (EV_P); 1766inline_size void infy_fork (EV_P);
1413#endif 1767#endif
1414 1768
1415void inline_size 1769inline_size void
1416loop_fork (EV_P) 1770loop_fork (EV_P)
1417{ 1771{
1418#if EV_USE_PORT 1772#if EV_USE_PORT
1419 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1773 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1420#endif 1774#endif
… …
1426#endif 1780#endif
1427#if EV_USE_INOTIFY 1781#if EV_USE_INOTIFY
1428 infy_fork (EV_A); 1782 infy_fork (EV_A);
1429#endif 1783#endif
1430 1784
1431 if (ev_is_active (&pipeev)) 1785 if (ev_is_active (&pipe_w))
1432 { 1786 {
1433 /* this "locks" the handlers against writing to the pipe */ 1787 /* this "locks" the handlers against writing to the pipe */
1434 /* while we modify the fd vars */ 1788 /* while we modify the fd vars */
1435 gotsig = 1; 1789 sig_pending = 1;
1436#if EV_ASYNC_ENABLE 1790#if EV_ASYNC_ENABLE
1437 gotasync = 1; 1791 async_pending = 1;
1438#endif 1792#endif
1439 1793
1440 ev_ref (EV_A); 1794 ev_ref (EV_A);
1441 ev_io_stop (EV_A_ &pipeev); 1795 ev_io_stop (EV_A_ &pipe_w);
1442 1796
1443#if EV_USE_EVENTFD 1797#if EV_USE_EVENTFD
1444 if (evfd >= 0) 1798 if (evfd >= 0)
1445 close (evfd); 1799 close (evfd);
1446#endif 1800#endif
1447 1801
1448 if (evpipe [0] >= 0) 1802 if (evpipe [0] >= 0)
1449 { 1803 {
1450 close (evpipe [0]); 1804 EV_WIN32_CLOSE_FD (evpipe [0]);
1451 close (evpipe [1]); 1805 EV_WIN32_CLOSE_FD (evpipe [1]);
1452 } 1806 }
1453 1807
1808#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1454 evpipe_init (EV_A); 1809 evpipe_init (EV_A);
1455 /* now iterate over everything, in case we missed something */ 1810 /* now iterate over everything, in case we missed something */
1456 pipecb (EV_A_ &pipeev, EV_READ); 1811 pipecb (EV_A_ &pipe_w, EV_READ);
1812#endif
1457 } 1813 }
1458 1814
1459 postfork = 0; 1815 postfork = 0;
1460} 1816}
1461 1817
1462#if EV_MULTIPLICITY 1818#if EV_MULTIPLICITY
1819
1463struct ev_loop * 1820struct ev_loop *
1464ev_loop_new (unsigned int flags) 1821ev_loop_new (unsigned int flags)
1465{ 1822{
1466 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1823 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1467 1824
1468 memset (loop, 0, sizeof (struct ev_loop)); 1825 memset (EV_A, 0, sizeof (struct ev_loop));
1469
1470 loop_init (EV_A_ flags); 1826 loop_init (EV_A_ flags);
1471 1827
1472 if (ev_backend (EV_A)) 1828 if (ev_backend (EV_A))
1473 return loop; 1829 return EV_A;
1474 1830
1475 return 0; 1831 return 0;
1476} 1832}
1477 1833
1478void 1834void
… …
1484 1840
1485void 1841void
1486ev_loop_fork (EV_P) 1842ev_loop_fork (EV_P)
1487{ 1843{
1488 postfork = 1; /* must be in line with ev_default_fork */ 1844 postfork = 1; /* must be in line with ev_default_fork */
1845}
1846#endif /* multiplicity */
1847
1848#if EV_VERIFY
1849static void noinline
1850verify_watcher (EV_P_ W w)
1851{
1852 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1853
1854 if (w->pending)
1855 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1856}
1857
1858static void noinline
1859verify_heap (EV_P_ ANHE *heap, int N)
1860{
1861 int i;
1862
1863 for (i = HEAP0; i < N + HEAP0; ++i)
1864 {
1865 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1866 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1867 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1868
1869 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1870 }
1871}
1872
1873static void noinline
1874array_verify (EV_P_ W *ws, int cnt)
1875{
1876 while (cnt--)
1877 {
1878 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1879 verify_watcher (EV_A_ ws [cnt]);
1880 }
1881}
1882#endif
1883
1884#if EV_FEATURE_API
1885void
1886ev_verify (EV_P)
1887{
1888#if EV_VERIFY
1889 int i;
1890 WL w;
1891
1892 assert (activecnt >= -1);
1893
1894 assert (fdchangemax >= fdchangecnt);
1895 for (i = 0; i < fdchangecnt; ++i)
1896 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1897
1898 assert (anfdmax >= 0);
1899 for (i = 0; i < anfdmax; ++i)
1900 for (w = anfds [i].head; w; w = w->next)
1901 {
1902 verify_watcher (EV_A_ (W)w);
1903 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1904 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1905 }
1906
1907 assert (timermax >= timercnt);
1908 verify_heap (EV_A_ timers, timercnt);
1909
1910#if EV_PERIODIC_ENABLE
1911 assert (periodicmax >= periodiccnt);
1912 verify_heap (EV_A_ periodics, periodiccnt);
1913#endif
1914
1915 for (i = NUMPRI; i--; )
1916 {
1917 assert (pendingmax [i] >= pendingcnt [i]);
1918#if EV_IDLE_ENABLE
1919 assert (idleall >= 0);
1920 assert (idlemax [i] >= idlecnt [i]);
1921 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1922#endif
1923 }
1924
1925#if EV_FORK_ENABLE
1926 assert (forkmax >= forkcnt);
1927 array_verify (EV_A_ (W *)forks, forkcnt);
1928#endif
1929
1930#if EV_ASYNC_ENABLE
1931 assert (asyncmax >= asynccnt);
1932 array_verify (EV_A_ (W *)asyncs, asynccnt);
1933#endif
1934
1935#if EV_PREPARE_ENABLE
1936 assert (preparemax >= preparecnt);
1937 array_verify (EV_A_ (W *)prepares, preparecnt);
1938#endif
1939
1940#if EV_CHECK_ENABLE
1941 assert (checkmax >= checkcnt);
1942 array_verify (EV_A_ (W *)checks, checkcnt);
1943#endif
1944
1945# if 0
1946#if EV_CHILD_ENABLE
1947 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1948 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1949#endif
1950# endif
1951#endif
1489} 1952}
1490#endif 1953#endif
1491 1954
1492#if EV_MULTIPLICITY 1955#if EV_MULTIPLICITY
1493struct ev_loop * 1956struct ev_loop *
… …
1498#endif 1961#endif
1499{ 1962{
1500 if (!ev_default_loop_ptr) 1963 if (!ev_default_loop_ptr)
1501 { 1964 {
1502#if EV_MULTIPLICITY 1965#if EV_MULTIPLICITY
1503 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1966 EV_P = ev_default_loop_ptr = &default_loop_struct;
1504#else 1967#else
1505 ev_default_loop_ptr = 1; 1968 ev_default_loop_ptr = 1;
1506#endif 1969#endif
1507 1970
1508 loop_init (EV_A_ flags); 1971 loop_init (EV_A_ flags);
1509 1972
1510 if (ev_backend (EV_A)) 1973 if (ev_backend (EV_A))
1511 { 1974 {
1512#ifndef _WIN32 1975#if EV_CHILD_ENABLE
1513 ev_signal_init (&childev, childcb, SIGCHLD); 1976 ev_signal_init (&childev, childcb, SIGCHLD);
1514 ev_set_priority (&childev, EV_MAXPRI); 1977 ev_set_priority (&childev, EV_MAXPRI);
1515 ev_signal_start (EV_A_ &childev); 1978 ev_signal_start (EV_A_ &childev);
1516 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1979 ev_unref (EV_A); /* child watcher should not keep loop alive */
1517#endif 1980#endif
… …
1525 1988
1526void 1989void
1527ev_default_destroy (void) 1990ev_default_destroy (void)
1528{ 1991{
1529#if EV_MULTIPLICITY 1992#if EV_MULTIPLICITY
1530 struct ev_loop *loop = ev_default_loop_ptr; 1993 EV_P = ev_default_loop_ptr;
1531#endif 1994#endif
1532 1995
1533#ifndef _WIN32 1996 ev_default_loop_ptr = 0;
1997
1998#if EV_CHILD_ENABLE
1534 ev_ref (EV_A); /* child watcher */ 1999 ev_ref (EV_A); /* child watcher */
1535 ev_signal_stop (EV_A_ &childev); 2000 ev_signal_stop (EV_A_ &childev);
1536#endif 2001#endif
1537 2002
1538 loop_destroy (EV_A); 2003 loop_destroy (EV_A);
… …
1540 2005
1541void 2006void
1542ev_default_fork (void) 2007ev_default_fork (void)
1543{ 2008{
1544#if EV_MULTIPLICITY 2009#if EV_MULTIPLICITY
1545 struct ev_loop *loop = ev_default_loop_ptr; 2010 EV_P = ev_default_loop_ptr;
1546#endif 2011#endif
1547 2012
1548 if (backend)
1549 postfork = 1; /* must be in line with ev_loop_fork */ 2013 postfork = 1; /* must be in line with ev_loop_fork */
1550} 2014}
1551 2015
1552/*****************************************************************************/ 2016/*****************************************************************************/
1553 2017
1554void 2018void
1555ev_invoke (EV_P_ void *w, int revents) 2019ev_invoke (EV_P_ void *w, int revents)
1556{ 2020{
1557 EV_CB_INVOKE ((W)w, revents); 2021 EV_CB_INVOKE ((W)w, revents);
1558} 2022}
1559 2023
1560void inline_speed 2024unsigned int
1561call_pending (EV_P) 2025ev_pending_count (EV_P)
2026{
2027 int pri;
2028 unsigned int count = 0;
2029
2030 for (pri = NUMPRI; pri--; )
2031 count += pendingcnt [pri];
2032
2033 return count;
2034}
2035
2036void noinline
2037ev_invoke_pending (EV_P)
1562{ 2038{
1563 int pri; 2039 int pri;
1564 2040
1565 for (pri = NUMPRI; pri--; ) 2041 for (pri = NUMPRI; pri--; )
1566 while (pendingcnt [pri]) 2042 while (pendingcnt [pri])
1567 { 2043 {
1568 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2044 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1569 2045
1570 if (expect_true (p->w))
1571 {
1572 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2046 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2047 /* ^ this is no longer true, as pending_w could be here */
1573 2048
1574 p->w->pending = 0; 2049 p->w->pending = 0;
1575 EV_CB_INVOKE (p->w, p->events); 2050 EV_CB_INVOKE (p->w, p->events);
1576 } 2051 EV_FREQUENT_CHECK;
1577 } 2052 }
1578} 2053}
1579 2054
1580#if EV_IDLE_ENABLE 2055#if EV_IDLE_ENABLE
1581void inline_size 2056/* make idle watchers pending. this handles the "call-idle */
2057/* only when higher priorities are idle" logic */
2058inline_size void
1582idle_reify (EV_P) 2059idle_reify (EV_P)
1583{ 2060{
1584 if (expect_false (idleall)) 2061 if (expect_false (idleall))
1585 { 2062 {
1586 int pri; 2063 int pri;
… …
1598 } 2075 }
1599 } 2076 }
1600} 2077}
1601#endif 2078#endif
1602 2079
1603void inline_size 2080/* make timers pending */
2081inline_size void
1604timers_reify (EV_P) 2082timers_reify (EV_P)
1605{ 2083{
2084 EV_FREQUENT_CHECK;
2085
1606 while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now) 2086 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1607 { 2087 {
1608 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2088 do
1609
1610 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1611
1612 /* first reschedule or stop timer */
1613 if (w->repeat)
1614 { 2089 {
2090 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2091
2092 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2093
2094 /* first reschedule or stop timer */
2095 if (w->repeat)
2096 {
1615 ev_at (w) += w->repeat; 2097 ev_at (w) += w->repeat;
1616 if (ev_at (w) < mn_now) 2098 if (ev_at (w) < mn_now)
1617 ev_at (w) = mn_now; 2099 ev_at (w) = mn_now;
1618 2100
1619 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2101 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1620 2102
1621 ANHE_at_set (timers [HEAP0]); 2103 ANHE_at_cache (timers [HEAP0]);
1622 downheap (timers, timercnt, HEAP0); 2104 downheap (timers, timercnt, HEAP0);
2105 }
2106 else
2107 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2108
2109 EV_FREQUENT_CHECK;
2110 feed_reverse (EV_A_ (W)w);
1623 } 2111 }
1624 else 2112 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1625 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1626 2113
1627 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2114 feed_reverse_done (EV_A_ EV_TIMER);
1628 } 2115 }
1629} 2116}
1630 2117
1631#if EV_PERIODIC_ENABLE 2118#if EV_PERIODIC_ENABLE
1632void inline_size 2119/* make periodics pending */
2120inline_size void
1633periodics_reify (EV_P) 2121periodics_reify (EV_P)
1634{ 2122{
2123 EV_FREQUENT_CHECK;
2124
1635 while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now) 2125 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1636 { 2126 {
1637 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2127 int feed_count = 0;
1638 2128
1639 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2129 do
1640
1641 /* first reschedule or stop timer */
1642 if (w->reschedule_cb)
1643 { 2130 {
2131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2132
2133 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2134
2135 /* first reschedule or stop timer */
2136 if (w->reschedule_cb)
2137 {
1644 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 2138 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1645 2139
1646 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); 2140 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1647 2141
1648 ANHE_at_set (periodics [HEAP0]); 2142 ANHE_at_cache (periodics [HEAP0]);
1649 downheap (periodics, periodiccnt, HEAP0); 2143 downheap (periodics, periodiccnt, HEAP0);
2144 }
2145 else if (w->interval)
2146 {
2147 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2148 /* if next trigger time is not sufficiently in the future, put it there */
2149 /* this might happen because of floating point inexactness */
2150 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2151 {
2152 ev_at (w) += w->interval;
2153
2154 /* if interval is unreasonably low we might still have a time in the past */
2155 /* so correct this. this will make the periodic very inexact, but the user */
2156 /* has effectively asked to get triggered more often than possible */
2157 if (ev_at (w) < ev_rt_now)
2158 ev_at (w) = ev_rt_now;
2159 }
2160
2161 ANHE_at_cache (periodics [HEAP0]);
2162 downheap (periodics, periodiccnt, HEAP0);
2163 }
2164 else
2165 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2166
2167 EV_FREQUENT_CHECK;
2168 feed_reverse (EV_A_ (W)w);
1650 } 2169 }
1651 else if (w->interval) 2170 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1652 {
1653 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1654 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1655 2171
1656 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1657
1658 ANHE_at_set (periodics [HEAP0]);
1659 downheap (periodics, periodiccnt, HEAP0);
1660 }
1661 else
1662 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1663
1664 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2172 feed_reverse_done (EV_A_ EV_PERIODIC);
1665 } 2173 }
1666} 2174}
1667 2175
2176/* simply recalculate all periodics */
2177/* TODO: maybe ensure that at least one event happens when jumping forward? */
1668static void noinline 2178static void noinline
1669periodics_reschedule (EV_P) 2179periodics_reschedule (EV_P)
1670{ 2180{
1671 int i; 2181 int i;
1672 2182
… …
1678 if (w->reschedule_cb) 2188 if (w->reschedule_cb)
1679 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1680 else if (w->interval) 2190 else if (w->interval)
1681 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2191 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1682 2192
1683 ANHE_at_set (periodics [i]); 2193 ANHE_at_cache (periodics [i]);
1684 } 2194 }
1685 2195
1686 /* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */ 2196 reheap (periodics, periodiccnt);
1687 /* also, this is easy and corretc for both 2-heaps and 4-heaps */ 2197}
2198#endif
2199
2200/* adjust all timers by a given offset */
2201static void noinline
2202timers_reschedule (EV_P_ ev_tstamp adjust)
2203{
2204 int i;
2205
1688 for (i = 0; i < periodiccnt; ++i) 2206 for (i = 0; i < timercnt; ++i)
1689 upheap (periodics, i + HEAP0); 2207 {
2208 ANHE *he = timers + i + HEAP0;
2209 ANHE_w (*he)->at += adjust;
2210 ANHE_at_cache (*he);
2211 }
1690} 2212}
1691#endif
1692 2213
1693void inline_speed 2214/* fetch new monotonic and realtime times from the kernel */
2215/* also detect if there was a timejump, and act accordingly */
2216inline_speed void
1694time_update (EV_P_ ev_tstamp max_block) 2217time_update (EV_P_ ev_tstamp max_block)
1695{ 2218{
1696 int i;
1697
1698#if EV_USE_MONOTONIC 2219#if EV_USE_MONOTONIC
1699 if (expect_true (have_monotonic)) 2220 if (expect_true (have_monotonic))
1700 { 2221 {
2222 int i;
1701 ev_tstamp odiff = rtmn_diff; 2223 ev_tstamp odiff = rtmn_diff;
1702 2224
1703 mn_now = get_clock (); 2225 mn_now = get_clock ();
1704 2226
1705 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2227 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1731 ev_rt_now = ev_time (); 2253 ev_rt_now = ev_time ();
1732 mn_now = get_clock (); 2254 mn_now = get_clock ();
1733 now_floor = mn_now; 2255 now_floor = mn_now;
1734 } 2256 }
1735 2257
2258 /* no timer adjustment, as the monotonic clock doesn't jump */
2259 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1736# if EV_PERIODIC_ENABLE 2260# if EV_PERIODIC_ENABLE
1737 periodics_reschedule (EV_A); 2261 periodics_reschedule (EV_A);
1738# endif 2262# endif
1739 /* no timer adjustment, as the monotonic clock doesn't jump */
1740 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1741 } 2263 }
1742 else 2264 else
1743#endif 2265#endif
1744 { 2266 {
1745 ev_rt_now = ev_time (); 2267 ev_rt_now = ev_time ();
1746 2268
1747 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2269 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1748 { 2270 {
2271 /* adjust timers. this is easy, as the offset is the same for all of them */
2272 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1749#if EV_PERIODIC_ENABLE 2273#if EV_PERIODIC_ENABLE
1750 periodics_reschedule (EV_A); 2274 periodics_reschedule (EV_A);
1751#endif 2275#endif
1752 /* adjust timers. this is easy, as the offset is the same for all of them */
1753 for (i = 0; i < timercnt; ++i)
1754 {
1755 ANHE *he = timers + i + HEAP0;
1756 ANHE_w (*he)->at += ev_rt_now - mn_now;
1757 ANHE_at_set (*he);
1758 }
1759 } 2276 }
1760 2277
1761 mn_now = ev_rt_now; 2278 mn_now = ev_rt_now;
1762 } 2279 }
1763} 2280}
1764 2281
1765void 2282void
1766ev_ref (EV_P)
1767{
1768 ++activecnt;
1769}
1770
1771void
1772ev_unref (EV_P)
1773{
1774 --activecnt;
1775}
1776
1777static int loop_done;
1778
1779void
1780ev_loop (EV_P_ int flags) 2283ev_run (EV_P_ int flags)
1781{ 2284{
2285#if EV_FEATURE_API
2286 ++loop_depth;
2287#endif
2288
2289 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2290
1782 loop_done = EVUNLOOP_CANCEL; 2291 loop_done = EVBREAK_CANCEL;
1783 2292
1784 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2293 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1785 2294
1786 do 2295 do
1787 { 2296 {
2297#if EV_VERIFY >= 2
2298 ev_verify (EV_A);
2299#endif
2300
1788#ifndef _WIN32 2301#ifndef _WIN32
1789 if (expect_false (curpid)) /* penalise the forking check even more */ 2302 if (expect_false (curpid)) /* penalise the forking check even more */
1790 if (expect_false (getpid () != curpid)) 2303 if (expect_false (getpid () != curpid))
1791 { 2304 {
1792 curpid = getpid (); 2305 curpid = getpid ();
… …
1798 /* we might have forked, so queue fork handlers */ 2311 /* we might have forked, so queue fork handlers */
1799 if (expect_false (postfork)) 2312 if (expect_false (postfork))
1800 if (forkcnt) 2313 if (forkcnt)
1801 { 2314 {
1802 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2315 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1803 call_pending (EV_A); 2316 EV_INVOKE_PENDING;
1804 } 2317 }
1805#endif 2318#endif
1806 2319
2320#if EV_PREPARE_ENABLE
1807 /* queue prepare watchers (and execute them) */ 2321 /* queue prepare watchers (and execute them) */
1808 if (expect_false (preparecnt)) 2322 if (expect_false (preparecnt))
1809 { 2323 {
1810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2324 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1811 call_pending (EV_A); 2325 EV_INVOKE_PENDING;
1812 } 2326 }
2327#endif
1813 2328
1814 if (expect_false (!activecnt)) 2329 if (expect_false (loop_done))
1815 break; 2330 break;
1816 2331
1817 /* we might have forked, so reify kernel state if necessary */ 2332 /* we might have forked, so reify kernel state if necessary */
1818 if (expect_false (postfork)) 2333 if (expect_false (postfork))
1819 loop_fork (EV_A); 2334 loop_fork (EV_A);
… …
1824 /* calculate blocking time */ 2339 /* calculate blocking time */
1825 { 2340 {
1826 ev_tstamp waittime = 0.; 2341 ev_tstamp waittime = 0.;
1827 ev_tstamp sleeptime = 0.; 2342 ev_tstamp sleeptime = 0.;
1828 2343
2344 /* remember old timestamp for io_blocktime calculation */
2345 ev_tstamp prev_mn_now = mn_now;
2346
2347 /* update time to cancel out callback processing overhead */
2348 time_update (EV_A_ 1e100);
2349
1829 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2350 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1830 { 2351 {
1831 /* update time to cancel out callback processing overhead */
1832 time_update (EV_A_ 1e100);
1833
1834 waittime = MAX_BLOCKTIME; 2352 waittime = MAX_BLOCKTIME;
1835 2353
1836 if (timercnt) 2354 if (timercnt)
1837 { 2355 {
1838 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2356 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1845 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2363 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1846 if (waittime > to) waittime = to; 2364 if (waittime > to) waittime = to;
1847 } 2365 }
1848#endif 2366#endif
1849 2367
2368 /* don't let timeouts decrease the waittime below timeout_blocktime */
1850 if (expect_false (waittime < timeout_blocktime)) 2369 if (expect_false (waittime < timeout_blocktime))
1851 waittime = timeout_blocktime; 2370 waittime = timeout_blocktime;
1852 2371
1853 sleeptime = waittime - backend_fudge; 2372 /* extra check because io_blocktime is commonly 0 */
1854
1855 if (expect_true (sleeptime > io_blocktime)) 2373 if (expect_false (io_blocktime))
1856 sleeptime = io_blocktime;
1857
1858 if (sleeptime)
1859 { 2374 {
2375 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2376
2377 if (sleeptime > waittime - backend_fudge)
2378 sleeptime = waittime - backend_fudge;
2379
2380 if (expect_true (sleeptime > 0.))
2381 {
1860 ev_sleep (sleeptime); 2382 ev_sleep (sleeptime);
1861 waittime -= sleeptime; 2383 waittime -= sleeptime;
2384 }
1862 } 2385 }
1863 } 2386 }
1864 2387
2388#if EV_FEATURE_API
1865 ++loop_count; 2389 ++loop_count;
2390#endif
2391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1866 backend_poll (EV_A_ waittime); 2392 backend_poll (EV_A_ waittime);
2393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1867 2394
1868 /* update ev_rt_now, do magic */ 2395 /* update ev_rt_now, do magic */
1869 time_update (EV_A_ waittime + sleeptime); 2396 time_update (EV_A_ waittime + sleeptime);
1870 } 2397 }
1871 2398
… …
1878#if EV_IDLE_ENABLE 2405#if EV_IDLE_ENABLE
1879 /* queue idle watchers unless other events are pending */ 2406 /* queue idle watchers unless other events are pending */
1880 idle_reify (EV_A); 2407 idle_reify (EV_A);
1881#endif 2408#endif
1882 2409
2410#if EV_CHECK_ENABLE
1883 /* queue check watchers, to be executed first */ 2411 /* queue check watchers, to be executed first */
1884 if (expect_false (checkcnt)) 2412 if (expect_false (checkcnt))
1885 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2413 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2414#endif
1886 2415
1887 call_pending (EV_A); 2416 EV_INVOKE_PENDING;
1888 } 2417 }
1889 while (expect_true ( 2418 while (expect_true (
1890 activecnt 2419 activecnt
1891 && !loop_done 2420 && !loop_done
1892 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2421 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1893 )); 2422 ));
1894 2423
1895 if (loop_done == EVUNLOOP_ONE) 2424 if (loop_done == EVBREAK_ONE)
1896 loop_done = EVUNLOOP_CANCEL; 2425 loop_done = EVBREAK_CANCEL;
1897}
1898 2426
2427#if EV_FEATURE_API
2428 --loop_depth;
2429#endif
2430}
2431
1899void 2432void
1900ev_unloop (EV_P_ int how) 2433ev_break (EV_P_ int how)
1901{ 2434{
1902 loop_done = how; 2435 loop_done = how;
1903} 2436}
1904 2437
2438void
2439ev_ref (EV_P)
2440{
2441 ++activecnt;
2442}
2443
2444void
2445ev_unref (EV_P)
2446{
2447 --activecnt;
2448}
2449
2450void
2451ev_now_update (EV_P)
2452{
2453 time_update (EV_A_ 1e100);
2454}
2455
2456void
2457ev_suspend (EV_P)
2458{
2459 ev_now_update (EV_A);
2460}
2461
2462void
2463ev_resume (EV_P)
2464{
2465 ev_tstamp mn_prev = mn_now;
2466
2467 ev_now_update (EV_A);
2468 timers_reschedule (EV_A_ mn_now - mn_prev);
2469#if EV_PERIODIC_ENABLE
2470 /* TODO: really do this? */
2471 periodics_reschedule (EV_A);
2472#endif
2473}
2474
1905/*****************************************************************************/ 2475/*****************************************************************************/
2476/* singly-linked list management, used when the expected list length is short */
1906 2477
1907void inline_size 2478inline_size void
1908wlist_add (WL *head, WL elem) 2479wlist_add (WL *head, WL elem)
1909{ 2480{
1910 elem->next = *head; 2481 elem->next = *head;
1911 *head = elem; 2482 *head = elem;
1912} 2483}
1913 2484
1914void inline_size 2485inline_size void
1915wlist_del (WL *head, WL elem) 2486wlist_del (WL *head, WL elem)
1916{ 2487{
1917 while (*head) 2488 while (*head)
1918 { 2489 {
1919 if (*head == elem) 2490 if (expect_true (*head == elem))
1920 { 2491 {
1921 *head = elem->next; 2492 *head = elem->next;
1922 return; 2493 break;
1923 } 2494 }
1924 2495
1925 head = &(*head)->next; 2496 head = &(*head)->next;
1926 } 2497 }
1927} 2498}
1928 2499
1929void inline_speed 2500/* internal, faster, version of ev_clear_pending */
2501inline_speed void
1930clear_pending (EV_P_ W w) 2502clear_pending (EV_P_ W w)
1931{ 2503{
1932 if (w->pending) 2504 if (w->pending)
1933 { 2505 {
1934 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2506 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1935 w->pending = 0; 2507 w->pending = 0;
1936 } 2508 }
1937} 2509}
1938 2510
1939int 2511int
… …
1943 int pending = w_->pending; 2515 int pending = w_->pending;
1944 2516
1945 if (expect_true (pending)) 2517 if (expect_true (pending))
1946 { 2518 {
1947 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2519 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2520 p->w = (W)&pending_w;
1948 w_->pending = 0; 2521 w_->pending = 0;
1949 p->w = 0;
1950 return p->events; 2522 return p->events;
1951 } 2523 }
1952 else 2524 else
1953 return 0; 2525 return 0;
1954} 2526}
1955 2527
1956void inline_size 2528inline_size void
1957pri_adjust (EV_P_ W w) 2529pri_adjust (EV_P_ W w)
1958{ 2530{
1959 int pri = w->priority; 2531 int pri = ev_priority (w);
1960 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2532 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1961 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2533 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1962 w->priority = pri; 2534 ev_set_priority (w, pri);
1963} 2535}
1964 2536
1965void inline_speed 2537inline_speed void
1966ev_start (EV_P_ W w, int active) 2538ev_start (EV_P_ W w, int active)
1967{ 2539{
1968 pri_adjust (EV_A_ w); 2540 pri_adjust (EV_A_ w);
1969 w->active = active; 2541 w->active = active;
1970 ev_ref (EV_A); 2542 ev_ref (EV_A);
1971} 2543}
1972 2544
1973void inline_size 2545inline_size void
1974ev_stop (EV_P_ W w) 2546ev_stop (EV_P_ W w)
1975{ 2547{
1976 ev_unref (EV_A); 2548 ev_unref (EV_A);
1977 w->active = 0; 2549 w->active = 0;
1978} 2550}
… …
1985 int fd = w->fd; 2557 int fd = w->fd;
1986 2558
1987 if (expect_false (ev_is_active (w))) 2559 if (expect_false (ev_is_active (w)))
1988 return; 2560 return;
1989 2561
1990 assert (("ev_io_start called with negative fd", fd >= 0)); 2562 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2563 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2564
2565 EV_FREQUENT_CHECK;
1991 2566
1992 ev_start (EV_A_ (W)w, 1); 2567 ev_start (EV_A_ (W)w, 1);
1993 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2568 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1994 wlist_add (&anfds[fd].head, (WL)w); 2569 wlist_add (&anfds[fd].head, (WL)w);
1995 2570
1996 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2571 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1997 w->events &= ~EV_IOFDSET; 2572 w->events &= ~EV__IOFDSET;
2573
2574 EV_FREQUENT_CHECK;
1998} 2575}
1999 2576
2000void noinline 2577void noinline
2001ev_io_stop (EV_P_ ev_io *w) 2578ev_io_stop (EV_P_ ev_io *w)
2002{ 2579{
2003 clear_pending (EV_A_ (W)w); 2580 clear_pending (EV_A_ (W)w);
2004 if (expect_false (!ev_is_active (w))) 2581 if (expect_false (!ev_is_active (w)))
2005 return; 2582 return;
2006 2583
2007 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2584 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2585
2586 EV_FREQUENT_CHECK;
2008 2587
2009 wlist_del (&anfds[w->fd].head, (WL)w); 2588 wlist_del (&anfds[w->fd].head, (WL)w);
2010 ev_stop (EV_A_ (W)w); 2589 ev_stop (EV_A_ (W)w);
2011 2590
2012 fd_change (EV_A_ w->fd, 1); 2591 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2592
2593 EV_FREQUENT_CHECK;
2013} 2594}
2014 2595
2015void noinline 2596void noinline
2016ev_timer_start (EV_P_ ev_timer *w) 2597ev_timer_start (EV_P_ ev_timer *w)
2017{ 2598{
2018 if (expect_false (ev_is_active (w))) 2599 if (expect_false (ev_is_active (w)))
2019 return; 2600 return;
2020 2601
2021 ev_at (w) += mn_now; 2602 ev_at (w) += mn_now;
2022 2603
2023 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2604 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2024 2605
2606 EV_FREQUENT_CHECK;
2607
2608 ++timercnt;
2025 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2609 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2026 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 2610 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2027 ANHE_w (timers [ev_active (w)]) = (WT)w; 2611 ANHE_w (timers [ev_active (w)]) = (WT)w;
2028 ANHE_at_set (timers [ev_active (w)]); 2612 ANHE_at_cache (timers [ev_active (w)]);
2029 upheap (timers, ev_active (w)); 2613 upheap (timers, ev_active (w));
2030 2614
2615 EV_FREQUENT_CHECK;
2616
2031 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2617 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2032} 2618}
2033 2619
2034void noinline 2620void noinline
2035ev_timer_stop (EV_P_ ev_timer *w) 2621ev_timer_stop (EV_P_ ev_timer *w)
2036{ 2622{
2037 clear_pending (EV_A_ (W)w); 2623 clear_pending (EV_A_ (W)w);
2038 if (expect_false (!ev_is_active (w))) 2624 if (expect_false (!ev_is_active (w)))
2039 return; 2625 return;
2040 2626
2627 EV_FREQUENT_CHECK;
2628
2041 { 2629 {
2042 int active = ev_active (w); 2630 int active = ev_active (w);
2043 2631
2044 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2632 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2045 2633
2634 --timercnt;
2635
2046 if (expect_true (active < timercnt + HEAP0 - 1)) 2636 if (expect_true (active < timercnt + HEAP0))
2047 { 2637 {
2048 timers [active] = timers [timercnt + HEAP0 - 1]; 2638 timers [active] = timers [timercnt + HEAP0];
2049 adjustheap (timers, timercnt, active); 2639 adjustheap (timers, timercnt, active);
2050 } 2640 }
2051
2052 --timercnt;
2053 } 2641 }
2054 2642
2055 ev_at (w) -= mn_now; 2643 ev_at (w) -= mn_now;
2056 2644
2057 ev_stop (EV_A_ (W)w); 2645 ev_stop (EV_A_ (W)w);
2646
2647 EV_FREQUENT_CHECK;
2058} 2648}
2059 2649
2060void noinline 2650void noinline
2061ev_timer_again (EV_P_ ev_timer *w) 2651ev_timer_again (EV_P_ ev_timer *w)
2062{ 2652{
2653 EV_FREQUENT_CHECK;
2654
2063 if (ev_is_active (w)) 2655 if (ev_is_active (w))
2064 { 2656 {
2065 if (w->repeat) 2657 if (w->repeat)
2066 { 2658 {
2067 ev_at (w) = mn_now + w->repeat; 2659 ev_at (w) = mn_now + w->repeat;
2068 ANHE_at_set (timers [ev_active (w)]); 2660 ANHE_at_cache (timers [ev_active (w)]);
2069 adjustheap (timers, timercnt, ev_active (w)); 2661 adjustheap (timers, timercnt, ev_active (w));
2070 } 2662 }
2071 else 2663 else
2072 ev_timer_stop (EV_A_ w); 2664 ev_timer_stop (EV_A_ w);
2073 } 2665 }
2074 else if (w->repeat) 2666 else if (w->repeat)
2075 { 2667 {
2076 ev_at (w) = w->repeat; 2668 ev_at (w) = w->repeat;
2077 ev_timer_start (EV_A_ w); 2669 ev_timer_start (EV_A_ w);
2078 } 2670 }
2671
2672 EV_FREQUENT_CHECK;
2673}
2674
2675ev_tstamp
2676ev_timer_remaining (EV_P_ ev_timer *w)
2677{
2678 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2079} 2679}
2080 2680
2081#if EV_PERIODIC_ENABLE 2681#if EV_PERIODIC_ENABLE
2082void noinline 2682void noinline
2083ev_periodic_start (EV_P_ ev_periodic *w) 2683ev_periodic_start (EV_P_ ev_periodic *w)
… …
2087 2687
2088 if (w->reschedule_cb) 2688 if (w->reschedule_cb)
2089 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2689 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2090 else if (w->interval) 2690 else if (w->interval)
2091 { 2691 {
2092 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2692 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2093 /* this formula differs from the one in periodic_reify because we do not always round up */ 2693 /* this formula differs from the one in periodic_reify because we do not always round up */
2094 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2694 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2095 } 2695 }
2096 else 2696 else
2097 ev_at (w) = w->offset; 2697 ev_at (w) = w->offset;
2098 2698
2699 EV_FREQUENT_CHECK;
2700
2701 ++periodiccnt;
2099 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2702 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2100 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 2703 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2101 ANHE_w (periodics [ev_active (w)]) = (WT)w; 2704 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2102 ANHE_at_set (periodics [ev_active (w)]); 2705 ANHE_at_cache (periodics [ev_active (w)]);
2103 upheap (periodics, ev_active (w)); 2706 upheap (periodics, ev_active (w));
2104 2707
2708 EV_FREQUENT_CHECK;
2709
2105 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2710 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2106} 2711}
2107 2712
2108void noinline 2713void noinline
2109ev_periodic_stop (EV_P_ ev_periodic *w) 2714ev_periodic_stop (EV_P_ ev_periodic *w)
2110{ 2715{
2111 clear_pending (EV_A_ (W)w); 2716 clear_pending (EV_A_ (W)w);
2112 if (expect_false (!ev_is_active (w))) 2717 if (expect_false (!ev_is_active (w)))
2113 return; 2718 return;
2114 2719
2720 EV_FREQUENT_CHECK;
2721
2115 { 2722 {
2116 int active = ev_active (w); 2723 int active = ev_active (w);
2117 2724
2118 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2725 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2119 2726
2727 --periodiccnt;
2728
2120 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2729 if (expect_true (active < periodiccnt + HEAP0))
2121 { 2730 {
2122 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2731 periodics [active] = periodics [periodiccnt + HEAP0];
2123 adjustheap (periodics, periodiccnt, active); 2732 adjustheap (periodics, periodiccnt, active);
2124 } 2733 }
2125
2126 --periodiccnt;
2127 } 2734 }
2128 2735
2129 ev_stop (EV_A_ (W)w); 2736 ev_stop (EV_A_ (W)w);
2737
2738 EV_FREQUENT_CHECK;
2130} 2739}
2131 2740
2132void noinline 2741void noinline
2133ev_periodic_again (EV_P_ ev_periodic *w) 2742ev_periodic_again (EV_P_ ev_periodic *w)
2134{ 2743{
… …
2140 2749
2141#ifndef SA_RESTART 2750#ifndef SA_RESTART
2142# define SA_RESTART 0 2751# define SA_RESTART 0
2143#endif 2752#endif
2144 2753
2754#if EV_SIGNAL_ENABLE
2755
2145void noinline 2756void noinline
2146ev_signal_start (EV_P_ ev_signal *w) 2757ev_signal_start (EV_P_ ev_signal *w)
2147{ 2758{
2148#if EV_MULTIPLICITY
2149 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2150#endif
2151 if (expect_false (ev_is_active (w))) 2759 if (expect_false (ev_is_active (w)))
2152 return; 2760 return;
2153 2761
2154 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2762 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2155 2763
2156 evpipe_init (EV_A); 2764#if EV_MULTIPLICITY
2765 assert (("libev: a signal must not be attached to two different loops",
2766 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2157 2767
2768 signals [w->signum - 1].loop = EV_A;
2769#endif
2770
2771 EV_FREQUENT_CHECK;
2772
2773#if EV_USE_SIGNALFD
2774 if (sigfd == -2)
2158 { 2775 {
2159#ifndef _WIN32 2776 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2160 sigset_t full, prev; 2777 if (sigfd < 0 && errno == EINVAL)
2161 sigfillset (&full); 2778 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2162 sigprocmask (SIG_SETMASK, &full, &prev);
2163#endif
2164 2779
2165 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2780 if (sigfd >= 0)
2781 {
2782 fd_intern (sigfd); /* doing it twice will not hurt */
2166 2783
2167#ifndef _WIN32 2784 sigemptyset (&sigfd_set);
2168 sigprocmask (SIG_SETMASK, &prev, 0); 2785
2169#endif 2786 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2787 ev_set_priority (&sigfd_w, EV_MAXPRI);
2788 ev_io_start (EV_A_ &sigfd_w);
2789 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2790 }
2170 } 2791 }
2792
2793 if (sigfd >= 0)
2794 {
2795 /* TODO: check .head */
2796 sigaddset (&sigfd_set, w->signum);
2797 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2798
2799 signalfd (sigfd, &sigfd_set, 0);
2800 }
2801#endif
2171 2802
2172 ev_start (EV_A_ (W)w, 1); 2803 ev_start (EV_A_ (W)w, 1);
2173 wlist_add (&signals [w->signum - 1].head, (WL)w); 2804 wlist_add (&signals [w->signum - 1].head, (WL)w);
2174 2805
2175 if (!((WL)w)->next) 2806 if (!((WL)w)->next)
2807# if EV_USE_SIGNALFD
2808 if (sigfd < 0) /*TODO*/
2809# endif
2176 { 2810 {
2177#if _WIN32 2811# ifdef _WIN32
2812 evpipe_init (EV_A);
2813
2178 signal (w->signum, ev_sighandler); 2814 signal (w->signum, ev_sighandler);
2179#else 2815# else
2180 struct sigaction sa; 2816 struct sigaction sa;
2817
2818 evpipe_init (EV_A);
2819
2181 sa.sa_handler = ev_sighandler; 2820 sa.sa_handler = ev_sighandler;
2182 sigfillset (&sa.sa_mask); 2821 sigfillset (&sa.sa_mask);
2183 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2822 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2184 sigaction (w->signum, &sa, 0); 2823 sigaction (w->signum, &sa, 0);
2824
2825 sigemptyset (&sa.sa_mask);
2826 sigaddset (&sa.sa_mask, w->signum);
2827 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2185#endif 2828#endif
2186 } 2829 }
2830
2831 EV_FREQUENT_CHECK;
2187} 2832}
2188 2833
2189void noinline 2834void noinline
2190ev_signal_stop (EV_P_ ev_signal *w) 2835ev_signal_stop (EV_P_ ev_signal *w)
2191{ 2836{
2192 clear_pending (EV_A_ (W)w); 2837 clear_pending (EV_A_ (W)w);
2193 if (expect_false (!ev_is_active (w))) 2838 if (expect_false (!ev_is_active (w)))
2194 return; 2839 return;
2195 2840
2841 EV_FREQUENT_CHECK;
2842
2196 wlist_del (&signals [w->signum - 1].head, (WL)w); 2843 wlist_del (&signals [w->signum - 1].head, (WL)w);
2197 ev_stop (EV_A_ (W)w); 2844 ev_stop (EV_A_ (W)w);
2198 2845
2199 if (!signals [w->signum - 1].head) 2846 if (!signals [w->signum - 1].head)
2847 {
2848#if EV_MULTIPLICITY
2849 signals [w->signum - 1].loop = 0; /* unattach from signal */
2850#endif
2851#if EV_USE_SIGNALFD
2852 if (sigfd >= 0)
2853 {
2854 sigset_t ss;
2855
2856 sigemptyset (&ss);
2857 sigaddset (&ss, w->signum);
2858 sigdelset (&sigfd_set, w->signum);
2859
2860 signalfd (sigfd, &sigfd_set, 0);
2861 sigprocmask (SIG_UNBLOCK, &ss, 0);
2862 }
2863 else
2864#endif
2200 signal (w->signum, SIG_DFL); 2865 signal (w->signum, SIG_DFL);
2866 }
2867
2868 EV_FREQUENT_CHECK;
2201} 2869}
2870
2871#endif
2872
2873#if EV_CHILD_ENABLE
2202 2874
2203void 2875void
2204ev_child_start (EV_P_ ev_child *w) 2876ev_child_start (EV_P_ ev_child *w)
2205{ 2877{
2206#if EV_MULTIPLICITY 2878#if EV_MULTIPLICITY
2207 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2879 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2208#endif 2880#endif
2209 if (expect_false (ev_is_active (w))) 2881 if (expect_false (ev_is_active (w)))
2210 return; 2882 return;
2211 2883
2884 EV_FREQUENT_CHECK;
2885
2212 ev_start (EV_A_ (W)w, 1); 2886 ev_start (EV_A_ (W)w, 1);
2213 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2887 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2888
2889 EV_FREQUENT_CHECK;
2214} 2890}
2215 2891
2216void 2892void
2217ev_child_stop (EV_P_ ev_child *w) 2893ev_child_stop (EV_P_ ev_child *w)
2218{ 2894{
2219 clear_pending (EV_A_ (W)w); 2895 clear_pending (EV_A_ (W)w);
2220 if (expect_false (!ev_is_active (w))) 2896 if (expect_false (!ev_is_active (w)))
2221 return; 2897 return;
2222 2898
2899 EV_FREQUENT_CHECK;
2900
2223 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2901 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2224 ev_stop (EV_A_ (W)w); 2902 ev_stop (EV_A_ (W)w);
2903
2904 EV_FREQUENT_CHECK;
2225} 2905}
2906
2907#endif
2226 2908
2227#if EV_STAT_ENABLE 2909#if EV_STAT_ENABLE
2228 2910
2229# ifdef _WIN32 2911# ifdef _WIN32
2230# undef lstat 2912# undef lstat
2231# define lstat(a,b) _stati64 (a,b) 2913# define lstat(a,b) _stati64 (a,b)
2232# endif 2914# endif
2233 2915
2234#define DEF_STAT_INTERVAL 5.0074891 2916#define DEF_STAT_INTERVAL 5.0074891
2917#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2235#define MIN_STAT_INTERVAL 0.1074891 2918#define MIN_STAT_INTERVAL 0.1074891
2236 2919
2237static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2920static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2238 2921
2239#if EV_USE_INOTIFY 2922#if EV_USE_INOTIFY
2240# define EV_INOTIFY_BUFSIZE 8192 2923
2924/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2925# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2241 2926
2242static void noinline 2927static void noinline
2243infy_add (EV_P_ ev_stat *w) 2928infy_add (EV_P_ ev_stat *w)
2244{ 2929{
2245 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); 2930 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);
2246 2931
2247 if (w->wd < 0) 2932 if (w->wd >= 0)
2933 {
2934 struct statfs sfs;
2935
2936 /* now local changes will be tracked by inotify, but remote changes won't */
2937 /* unless the filesystem is known to be local, we therefore still poll */
2938 /* also do poll on <2.6.25, but with normal frequency */
2939
2940 if (!fs_2625)
2941 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2942 else if (!statfs (w->path, &sfs)
2943 && (sfs.f_type == 0x1373 /* devfs */
2944 || sfs.f_type == 0xEF53 /* ext2/3 */
2945 || sfs.f_type == 0x3153464a /* jfs */
2946 || sfs.f_type == 0x52654973 /* reiser3 */
2947 || sfs.f_type == 0x01021994 /* tempfs */
2948 || sfs.f_type == 0x58465342 /* xfs */))
2949 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2950 else
2951 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2248 { 2952 }
2249 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2953 else
2954 {
2955 /* can't use inotify, continue to stat */
2956 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2250 2957
2251 /* monitor some parent directory for speedup hints */ 2958 /* if path is not there, monitor some parent directory for speedup hints */
2252 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2959 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2253 /* but an efficiency issue only */ 2960 /* but an efficiency issue only */
2254 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2961 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2255 { 2962 {
2256 char path [4096]; 2963 char path [4096];
2257 strcpy (path, w->path); 2964 strcpy (path, w->path);
… …
2261 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2968 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2262 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2969 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2263 2970
2264 char *pend = strrchr (path, '/'); 2971 char *pend = strrchr (path, '/');
2265 2972
2266 if (!pend) 2973 if (!pend || pend == path)
2267 break; /* whoops, no '/', complain to your admin */ 2974 break;
2268 2975
2269 *pend = 0; 2976 *pend = 0;
2270 w->wd = inotify_add_watch (fs_fd, path, mask); 2977 w->wd = inotify_add_watch (fs_fd, path, mask);
2271 } 2978 }
2272 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2979 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2273 } 2980 }
2274 } 2981 }
2275 else
2276 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2277 2982
2278 if (w->wd >= 0) 2983 if (w->wd >= 0)
2279 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2984 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2985
2986 /* now re-arm timer, if required */
2987 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2988 ev_timer_again (EV_A_ &w->timer);
2989 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2280} 2990}
2281 2991
2282static void noinline 2992static void noinline
2283infy_del (EV_P_ ev_stat *w) 2993infy_del (EV_P_ ev_stat *w)
2284{ 2994{
… …
2287 2997
2288 if (wd < 0) 2998 if (wd < 0)
2289 return; 2999 return;
2290 3000
2291 w->wd = -2; 3001 w->wd = -2;
2292 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3002 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2293 wlist_del (&fs_hash [slot].head, (WL)w); 3003 wlist_del (&fs_hash [slot].head, (WL)w);
2294 3004
2295 /* remove this watcher, if others are watching it, they will rearm */ 3005 /* remove this watcher, if others are watching it, they will rearm */
2296 inotify_rm_watch (fs_fd, wd); 3006 inotify_rm_watch (fs_fd, wd);
2297} 3007}
2298 3008
2299static void noinline 3009static void noinline
2300infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3010infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2301{ 3011{
2302 if (slot < 0) 3012 if (slot < 0)
2303 /* overflow, need to check for all hahs slots */ 3013 /* overflow, need to check for all hash slots */
2304 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3014 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2305 infy_wd (EV_A_ slot, wd, ev); 3015 infy_wd (EV_A_ slot, wd, ev);
2306 else 3016 else
2307 { 3017 {
2308 WL w_; 3018 WL w_;
2309 3019
2310 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3020 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2311 { 3021 {
2312 ev_stat *w = (ev_stat *)w_; 3022 ev_stat *w = (ev_stat *)w_;
2313 w_ = w_->next; /* lets us remove this watcher and all before it */ 3023 w_ = w_->next; /* lets us remove this watcher and all before it */
2314 3024
2315 if (w->wd == wd || wd == -1) 3025 if (w->wd == wd || wd == -1)
2316 { 3026 {
2317 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3027 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2318 { 3028 {
3029 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2319 w->wd = -1; 3030 w->wd = -1;
2320 infy_add (EV_A_ w); /* re-add, no matter what */ 3031 infy_add (EV_A_ w); /* re-add, no matter what */
2321 } 3032 }
2322 3033
2323 stat_timer_cb (EV_A_ &w->timer, 0); 3034 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2328 3039
2329static void 3040static void
2330infy_cb (EV_P_ ev_io *w, int revents) 3041infy_cb (EV_P_ ev_io *w, int revents)
2331{ 3042{
2332 char buf [EV_INOTIFY_BUFSIZE]; 3043 char buf [EV_INOTIFY_BUFSIZE];
2333 struct inotify_event *ev = (struct inotify_event *)buf;
2334 int ofs; 3044 int ofs;
2335 int len = read (fs_fd, buf, sizeof (buf)); 3045 int len = read (fs_fd, buf, sizeof (buf));
2336 3046
2337 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3047 for (ofs = 0; ofs < len; )
3048 {
3049 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2338 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3050 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3051 ofs += sizeof (struct inotify_event) + ev->len;
3052 }
2339} 3053}
2340 3054
2341void inline_size 3055inline_size unsigned int
3056ev_linux_version (void)
3057{
3058 struct utsname buf;
3059 unsigned int v;
3060 int i;
3061 char *p = buf.release;
3062
3063 if (uname (&buf))
3064 return 0;
3065
3066 for (i = 3+1; --i; )
3067 {
3068 unsigned int c = 0;
3069
3070 for (;;)
3071 {
3072 if (*p >= '0' && *p <= '9')
3073 c = c * 10 + *p++ - '0';
3074 else
3075 {
3076 p += *p == '.';
3077 break;
3078 }
3079 }
3080
3081 v = (v << 8) | c;
3082 }
3083
3084 return v;
3085}
3086
3087inline_size void
3088ev_check_2625 (EV_P)
3089{
3090 /* kernels < 2.6.25 are borked
3091 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3092 */
3093 if (ev_linux_version () < 0x020619)
3094 return;
3095
3096 fs_2625 = 1;
3097}
3098
3099inline_size int
3100infy_newfd (void)
3101{
3102#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3104 if (fd >= 0)
3105 return fd;
3106#endif
3107 return inotify_init ();
3108}
3109
3110inline_size void
2342infy_init (EV_P) 3111infy_init (EV_P)
2343{ 3112{
2344 if (fs_fd != -2) 3113 if (fs_fd != -2)
2345 return; 3114 return;
2346 3115
3116 fs_fd = -1;
3117
3118 ev_check_2625 (EV_A);
3119
2347 fs_fd = inotify_init (); 3120 fs_fd = infy_newfd ();
2348 3121
2349 if (fs_fd >= 0) 3122 if (fs_fd >= 0)
2350 { 3123 {
3124 fd_intern (fs_fd);
2351 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3125 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2352 ev_set_priority (&fs_w, EV_MAXPRI); 3126 ev_set_priority (&fs_w, EV_MAXPRI);
2353 ev_io_start (EV_A_ &fs_w); 3127 ev_io_start (EV_A_ &fs_w);
3128 ev_unref (EV_A);
2354 } 3129 }
2355} 3130}
2356 3131
2357void inline_size 3132inline_size void
2358infy_fork (EV_P) 3133infy_fork (EV_P)
2359{ 3134{
2360 int slot; 3135 int slot;
2361 3136
2362 if (fs_fd < 0) 3137 if (fs_fd < 0)
2363 return; 3138 return;
2364 3139
3140 ev_ref (EV_A);
3141 ev_io_stop (EV_A_ &fs_w);
2365 close (fs_fd); 3142 close (fs_fd);
2366 fs_fd = inotify_init (); 3143 fs_fd = infy_newfd ();
2367 3144
3145 if (fs_fd >= 0)
3146 {
3147 fd_intern (fs_fd);
3148 ev_io_set (&fs_w, fs_fd, EV_READ);
3149 ev_io_start (EV_A_ &fs_w);
3150 ev_unref (EV_A);
3151 }
3152
2368 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3153 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2369 { 3154 {
2370 WL w_ = fs_hash [slot].head; 3155 WL w_ = fs_hash [slot].head;
2371 fs_hash [slot].head = 0; 3156 fs_hash [slot].head = 0;
2372 3157
2373 while (w_) 3158 while (w_)
… …
2378 w->wd = -1; 3163 w->wd = -1;
2379 3164
2380 if (fs_fd >= 0) 3165 if (fs_fd >= 0)
2381 infy_add (EV_A_ w); /* re-add, no matter what */ 3166 infy_add (EV_A_ w); /* re-add, no matter what */
2382 else 3167 else
3168 {
3169 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3170 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2383 ev_timer_start (EV_A_ &w->timer); 3171 ev_timer_again (EV_A_ &w->timer);
3172 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3173 }
2384 } 3174 }
2385
2386 } 3175 }
2387} 3176}
2388 3177
3178#endif
3179
3180#ifdef _WIN32
3181# define EV_LSTAT(p,b) _stati64 (p, b)
3182#else
3183# define EV_LSTAT(p,b) lstat (p, b)
2389#endif 3184#endif
2390 3185
2391void 3186void
2392ev_stat_stat (EV_P_ ev_stat *w) 3187ev_stat_stat (EV_P_ ev_stat *w)
2393{ 3188{
… …
2400static void noinline 3195static void noinline
2401stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3196stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2402{ 3197{
2403 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3198 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2404 3199
2405 /* we copy this here each the time so that */ 3200 ev_statdata prev = w->attr;
2406 /* prev has the old value when the callback gets invoked */
2407 w->prev = w->attr;
2408 ev_stat_stat (EV_A_ w); 3201 ev_stat_stat (EV_A_ w);
2409 3202
2410 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3203 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2411 if ( 3204 if (
2412 w->prev.st_dev != w->attr.st_dev 3205 prev.st_dev != w->attr.st_dev
2413 || w->prev.st_ino != w->attr.st_ino 3206 || prev.st_ino != w->attr.st_ino
2414 || w->prev.st_mode != w->attr.st_mode 3207 || prev.st_mode != w->attr.st_mode
2415 || w->prev.st_nlink != w->attr.st_nlink 3208 || prev.st_nlink != w->attr.st_nlink
2416 || w->prev.st_uid != w->attr.st_uid 3209 || prev.st_uid != w->attr.st_uid
2417 || w->prev.st_gid != w->attr.st_gid 3210 || prev.st_gid != w->attr.st_gid
2418 || w->prev.st_rdev != w->attr.st_rdev 3211 || prev.st_rdev != w->attr.st_rdev
2419 || w->prev.st_size != w->attr.st_size 3212 || prev.st_size != w->attr.st_size
2420 || w->prev.st_atime != w->attr.st_atime 3213 || prev.st_atime != w->attr.st_atime
2421 || w->prev.st_mtime != w->attr.st_mtime 3214 || prev.st_mtime != w->attr.st_mtime
2422 || w->prev.st_ctime != w->attr.st_ctime 3215 || prev.st_ctime != w->attr.st_ctime
2423 ) { 3216 ) {
3217 /* we only update w->prev on actual differences */
3218 /* in case we test more often than invoke the callback, */
3219 /* to ensure that prev is always different to attr */
3220 w->prev = prev;
3221
2424 #if EV_USE_INOTIFY 3222 #if EV_USE_INOTIFY
3223 if (fs_fd >= 0)
3224 {
2425 infy_del (EV_A_ w); 3225 infy_del (EV_A_ w);
2426 infy_add (EV_A_ w); 3226 infy_add (EV_A_ w);
2427 ev_stat_stat (EV_A_ w); /* avoid race... */ 3227 ev_stat_stat (EV_A_ w); /* avoid race... */
3228 }
2428 #endif 3229 #endif
2429 3230
2430 ev_feed_event (EV_A_ w, EV_STAT); 3231 ev_feed_event (EV_A_ w, EV_STAT);
2431 } 3232 }
2432} 3233}
… …
2435ev_stat_start (EV_P_ ev_stat *w) 3236ev_stat_start (EV_P_ ev_stat *w)
2436{ 3237{
2437 if (expect_false (ev_is_active (w))) 3238 if (expect_false (ev_is_active (w)))
2438 return; 3239 return;
2439 3240
2440 /* since we use memcmp, we need to clear any padding data etc. */
2441 memset (&w->prev, 0, sizeof (ev_statdata));
2442 memset (&w->attr, 0, sizeof (ev_statdata));
2443
2444 ev_stat_stat (EV_A_ w); 3241 ev_stat_stat (EV_A_ w);
2445 3242
3243 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2446 if (w->interval < MIN_STAT_INTERVAL) 3244 w->interval = MIN_STAT_INTERVAL;
2447 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2448 3245
2449 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3246 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2450 ev_set_priority (&w->timer, ev_priority (w)); 3247 ev_set_priority (&w->timer, ev_priority (w));
2451 3248
2452#if EV_USE_INOTIFY 3249#if EV_USE_INOTIFY
2453 infy_init (EV_A); 3250 infy_init (EV_A);
2454 3251
2455 if (fs_fd >= 0) 3252 if (fs_fd >= 0)
2456 infy_add (EV_A_ w); 3253 infy_add (EV_A_ w);
2457 else 3254 else
2458#endif 3255#endif
3256 {
2459 ev_timer_start (EV_A_ &w->timer); 3257 ev_timer_again (EV_A_ &w->timer);
3258 ev_unref (EV_A);
3259 }
2460 3260
2461 ev_start (EV_A_ (W)w, 1); 3261 ev_start (EV_A_ (W)w, 1);
3262
3263 EV_FREQUENT_CHECK;
2462} 3264}
2463 3265
2464void 3266void
2465ev_stat_stop (EV_P_ ev_stat *w) 3267ev_stat_stop (EV_P_ ev_stat *w)
2466{ 3268{
2467 clear_pending (EV_A_ (W)w); 3269 clear_pending (EV_A_ (W)w);
2468 if (expect_false (!ev_is_active (w))) 3270 if (expect_false (!ev_is_active (w)))
2469 return; 3271 return;
2470 3272
3273 EV_FREQUENT_CHECK;
3274
2471#if EV_USE_INOTIFY 3275#if EV_USE_INOTIFY
2472 infy_del (EV_A_ w); 3276 infy_del (EV_A_ w);
2473#endif 3277#endif
3278
3279 if (ev_is_active (&w->timer))
3280 {
3281 ev_ref (EV_A);
2474 ev_timer_stop (EV_A_ &w->timer); 3282 ev_timer_stop (EV_A_ &w->timer);
3283 }
2475 3284
2476 ev_stop (EV_A_ (W)w); 3285 ev_stop (EV_A_ (W)w);
3286
3287 EV_FREQUENT_CHECK;
2477} 3288}
2478#endif 3289#endif
2479 3290
2480#if EV_IDLE_ENABLE 3291#if EV_IDLE_ENABLE
2481void 3292void
… …
2483{ 3294{
2484 if (expect_false (ev_is_active (w))) 3295 if (expect_false (ev_is_active (w)))
2485 return; 3296 return;
2486 3297
2487 pri_adjust (EV_A_ (W)w); 3298 pri_adjust (EV_A_ (W)w);
3299
3300 EV_FREQUENT_CHECK;
2488 3301
2489 { 3302 {
2490 int active = ++idlecnt [ABSPRI (w)]; 3303 int active = ++idlecnt [ABSPRI (w)];
2491 3304
2492 ++idleall; 3305 ++idleall;
2493 ev_start (EV_A_ (W)w, active); 3306 ev_start (EV_A_ (W)w, active);
2494 3307
2495 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3308 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2496 idles [ABSPRI (w)][active - 1] = w; 3309 idles [ABSPRI (w)][active - 1] = w;
2497 } 3310 }
3311
3312 EV_FREQUENT_CHECK;
2498} 3313}
2499 3314
2500void 3315void
2501ev_idle_stop (EV_P_ ev_idle *w) 3316ev_idle_stop (EV_P_ ev_idle *w)
2502{ 3317{
2503 clear_pending (EV_A_ (W)w); 3318 clear_pending (EV_A_ (W)w);
2504 if (expect_false (!ev_is_active (w))) 3319 if (expect_false (!ev_is_active (w)))
2505 return; 3320 return;
2506 3321
3322 EV_FREQUENT_CHECK;
3323
2507 { 3324 {
2508 int active = ev_active (w); 3325 int active = ev_active (w);
2509 3326
2510 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3327 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2511 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3328 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2512 3329
2513 ev_stop (EV_A_ (W)w); 3330 ev_stop (EV_A_ (W)w);
2514 --idleall; 3331 --idleall;
2515 } 3332 }
2516}
2517#endif
2518 3333
3334 EV_FREQUENT_CHECK;
3335}
3336#endif
3337
3338#if EV_PREPARE_ENABLE
2519void 3339void
2520ev_prepare_start (EV_P_ ev_prepare *w) 3340ev_prepare_start (EV_P_ ev_prepare *w)
2521{ 3341{
2522 if (expect_false (ev_is_active (w))) 3342 if (expect_false (ev_is_active (w)))
2523 return; 3343 return;
3344
3345 EV_FREQUENT_CHECK;
2524 3346
2525 ev_start (EV_A_ (W)w, ++preparecnt); 3347 ev_start (EV_A_ (W)w, ++preparecnt);
2526 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3348 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2527 prepares [preparecnt - 1] = w; 3349 prepares [preparecnt - 1] = w;
3350
3351 EV_FREQUENT_CHECK;
2528} 3352}
2529 3353
2530void 3354void
2531ev_prepare_stop (EV_P_ ev_prepare *w) 3355ev_prepare_stop (EV_P_ ev_prepare *w)
2532{ 3356{
2533 clear_pending (EV_A_ (W)w); 3357 clear_pending (EV_A_ (W)w);
2534 if (expect_false (!ev_is_active (w))) 3358 if (expect_false (!ev_is_active (w)))
2535 return; 3359 return;
2536 3360
3361 EV_FREQUENT_CHECK;
3362
2537 { 3363 {
2538 int active = ev_active (w); 3364 int active = ev_active (w);
2539 3365
2540 prepares [active - 1] = prepares [--preparecnt]; 3366 prepares [active - 1] = prepares [--preparecnt];
2541 ev_active (prepares [active - 1]) = active; 3367 ev_active (prepares [active - 1]) = active;
2542 } 3368 }
2543 3369
2544 ev_stop (EV_A_ (W)w); 3370 ev_stop (EV_A_ (W)w);
2545}
2546 3371
3372 EV_FREQUENT_CHECK;
3373}
3374#endif
3375
3376#if EV_CHECK_ENABLE
2547void 3377void
2548ev_check_start (EV_P_ ev_check *w) 3378ev_check_start (EV_P_ ev_check *w)
2549{ 3379{
2550 if (expect_false (ev_is_active (w))) 3380 if (expect_false (ev_is_active (w)))
2551 return; 3381 return;
3382
3383 EV_FREQUENT_CHECK;
2552 3384
2553 ev_start (EV_A_ (W)w, ++checkcnt); 3385 ev_start (EV_A_ (W)w, ++checkcnt);
2554 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3386 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2555 checks [checkcnt - 1] = w; 3387 checks [checkcnt - 1] = w;
3388
3389 EV_FREQUENT_CHECK;
2556} 3390}
2557 3391
2558void 3392void
2559ev_check_stop (EV_P_ ev_check *w) 3393ev_check_stop (EV_P_ ev_check *w)
2560{ 3394{
2561 clear_pending (EV_A_ (W)w); 3395 clear_pending (EV_A_ (W)w);
2562 if (expect_false (!ev_is_active (w))) 3396 if (expect_false (!ev_is_active (w)))
2563 return; 3397 return;
2564 3398
3399 EV_FREQUENT_CHECK;
3400
2565 { 3401 {
2566 int active = ev_active (w); 3402 int active = ev_active (w);
2567 3403
2568 checks [active - 1] = checks [--checkcnt]; 3404 checks [active - 1] = checks [--checkcnt];
2569 ev_active (checks [active - 1]) = active; 3405 ev_active (checks [active - 1]) = active;
2570 } 3406 }
2571 3407
2572 ev_stop (EV_A_ (W)w); 3408 ev_stop (EV_A_ (W)w);
3409
3410 EV_FREQUENT_CHECK;
2573} 3411}
3412#endif
2574 3413
2575#if EV_EMBED_ENABLE 3414#if EV_EMBED_ENABLE
2576void noinline 3415void noinline
2577ev_embed_sweep (EV_P_ ev_embed *w) 3416ev_embed_sweep (EV_P_ ev_embed *w)
2578{ 3417{
2579 ev_loop (w->other, EVLOOP_NONBLOCK); 3418 ev_run (w->other, EVRUN_NOWAIT);
2580} 3419}
2581 3420
2582static void 3421static void
2583embed_io_cb (EV_P_ ev_io *io, int revents) 3422embed_io_cb (EV_P_ ev_io *io, int revents)
2584{ 3423{
2585 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3424 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2586 3425
2587 if (ev_cb (w)) 3426 if (ev_cb (w))
2588 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3427 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2589 else 3428 else
2590 ev_loop (w->other, EVLOOP_NONBLOCK); 3429 ev_run (w->other, EVRUN_NOWAIT);
2591} 3430}
2592 3431
2593static void 3432static void
2594embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3433embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2595{ 3434{
2596 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3435 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2597 3436
2598 { 3437 {
2599 struct ev_loop *loop = w->other; 3438 EV_P = w->other;
2600 3439
2601 while (fdchangecnt) 3440 while (fdchangecnt)
2602 { 3441 {
2603 fd_reify (EV_A); 3442 fd_reify (EV_A);
2604 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3443 ev_run (EV_A_ EVRUN_NOWAIT);
2605 } 3444 }
2606 } 3445 }
3446}
3447
3448static void
3449embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3450{
3451 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3452
3453 ev_embed_stop (EV_A_ w);
3454
3455 {
3456 EV_P = w->other;
3457
3458 ev_loop_fork (EV_A);
3459 ev_run (EV_A_ EVRUN_NOWAIT);
3460 }
3461
3462 ev_embed_start (EV_A_ w);
2607} 3463}
2608 3464
2609#if 0 3465#if 0
2610static void 3466static void
2611embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3467embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2619{ 3475{
2620 if (expect_false (ev_is_active (w))) 3476 if (expect_false (ev_is_active (w)))
2621 return; 3477 return;
2622 3478
2623 { 3479 {
2624 struct ev_loop *loop = w->other; 3480 EV_P = w->other;
2625 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3481 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2626 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3482 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2627 } 3483 }
3484
3485 EV_FREQUENT_CHECK;
2628 3486
2629 ev_set_priority (&w->io, ev_priority (w)); 3487 ev_set_priority (&w->io, ev_priority (w));
2630 ev_io_start (EV_A_ &w->io); 3488 ev_io_start (EV_A_ &w->io);
2631 3489
2632 ev_prepare_init (&w->prepare, embed_prepare_cb); 3490 ev_prepare_init (&w->prepare, embed_prepare_cb);
2633 ev_set_priority (&w->prepare, EV_MINPRI); 3491 ev_set_priority (&w->prepare, EV_MINPRI);
2634 ev_prepare_start (EV_A_ &w->prepare); 3492 ev_prepare_start (EV_A_ &w->prepare);
2635 3493
3494 ev_fork_init (&w->fork, embed_fork_cb);
3495 ev_fork_start (EV_A_ &w->fork);
3496
2636 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3497 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2637 3498
2638 ev_start (EV_A_ (W)w, 1); 3499 ev_start (EV_A_ (W)w, 1);
3500
3501 EV_FREQUENT_CHECK;
2639} 3502}
2640 3503
2641void 3504void
2642ev_embed_stop (EV_P_ ev_embed *w) 3505ev_embed_stop (EV_P_ ev_embed *w)
2643{ 3506{
2644 clear_pending (EV_A_ (W)w); 3507 clear_pending (EV_A_ (W)w);
2645 if (expect_false (!ev_is_active (w))) 3508 if (expect_false (!ev_is_active (w)))
2646 return; 3509 return;
2647 3510
3511 EV_FREQUENT_CHECK;
3512
2648 ev_io_stop (EV_A_ &w->io); 3513 ev_io_stop (EV_A_ &w->io);
2649 ev_prepare_stop (EV_A_ &w->prepare); 3514 ev_prepare_stop (EV_A_ &w->prepare);
3515 ev_fork_stop (EV_A_ &w->fork);
2650 3516
2651 ev_stop (EV_A_ (W)w); 3517 ev_stop (EV_A_ (W)w);
3518
3519 EV_FREQUENT_CHECK;
2652} 3520}
2653#endif 3521#endif
2654 3522
2655#if EV_FORK_ENABLE 3523#if EV_FORK_ENABLE
2656void 3524void
2657ev_fork_start (EV_P_ ev_fork *w) 3525ev_fork_start (EV_P_ ev_fork *w)
2658{ 3526{
2659 if (expect_false (ev_is_active (w))) 3527 if (expect_false (ev_is_active (w)))
2660 return; 3528 return;
3529
3530 EV_FREQUENT_CHECK;
2661 3531
2662 ev_start (EV_A_ (W)w, ++forkcnt); 3532 ev_start (EV_A_ (W)w, ++forkcnt);
2663 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3533 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2664 forks [forkcnt - 1] = w; 3534 forks [forkcnt - 1] = w;
3535
3536 EV_FREQUENT_CHECK;
2665} 3537}
2666 3538
2667void 3539void
2668ev_fork_stop (EV_P_ ev_fork *w) 3540ev_fork_stop (EV_P_ ev_fork *w)
2669{ 3541{
2670 clear_pending (EV_A_ (W)w); 3542 clear_pending (EV_A_ (W)w);
2671 if (expect_false (!ev_is_active (w))) 3543 if (expect_false (!ev_is_active (w)))
2672 return; 3544 return;
2673 3545
3546 EV_FREQUENT_CHECK;
3547
2674 { 3548 {
2675 int active = ev_active (w); 3549 int active = ev_active (w);
2676 3550
2677 forks [active - 1] = forks [--forkcnt]; 3551 forks [active - 1] = forks [--forkcnt];
2678 ev_active (forks [active - 1]) = active; 3552 ev_active (forks [active - 1]) = active;
2679 } 3553 }
2680 3554
2681 ev_stop (EV_A_ (W)w); 3555 ev_stop (EV_A_ (W)w);
3556
3557 EV_FREQUENT_CHECK;
2682} 3558}
2683#endif 3559#endif
2684 3560
2685#if EV_ASYNC_ENABLE 3561#if EV_ASYNC_ENABLE
2686void 3562void
2687ev_async_start (EV_P_ ev_async *w) 3563ev_async_start (EV_P_ ev_async *w)
2688{ 3564{
2689 if (expect_false (ev_is_active (w))) 3565 if (expect_false (ev_is_active (w)))
2690 return; 3566 return;
2691 3567
3568 w->sent = 0;
3569
2692 evpipe_init (EV_A); 3570 evpipe_init (EV_A);
3571
3572 EV_FREQUENT_CHECK;
2693 3573
2694 ev_start (EV_A_ (W)w, ++asynccnt); 3574 ev_start (EV_A_ (W)w, ++asynccnt);
2695 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3575 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2696 asyncs [asynccnt - 1] = w; 3576 asyncs [asynccnt - 1] = w;
3577
3578 EV_FREQUENT_CHECK;
2697} 3579}
2698 3580
2699void 3581void
2700ev_async_stop (EV_P_ ev_async *w) 3582ev_async_stop (EV_P_ ev_async *w)
2701{ 3583{
2702 clear_pending (EV_A_ (W)w); 3584 clear_pending (EV_A_ (W)w);
2703 if (expect_false (!ev_is_active (w))) 3585 if (expect_false (!ev_is_active (w)))
2704 return; 3586 return;
2705 3587
3588 EV_FREQUENT_CHECK;
3589
2706 { 3590 {
2707 int active = ev_active (w); 3591 int active = ev_active (w);
2708 3592
2709 asyncs [active - 1] = asyncs [--asynccnt]; 3593 asyncs [active - 1] = asyncs [--asynccnt];
2710 ev_active (asyncs [active - 1]) = active; 3594 ev_active (asyncs [active - 1]) = active;
2711 } 3595 }
2712 3596
2713 ev_stop (EV_A_ (W)w); 3597 ev_stop (EV_A_ (W)w);
3598
3599 EV_FREQUENT_CHECK;
2714} 3600}
2715 3601
2716void 3602void
2717ev_async_send (EV_P_ ev_async *w) 3603ev_async_send (EV_P_ ev_async *w)
2718{ 3604{
2719 w->sent = 1; 3605 w->sent = 1;
2720 evpipe_write (EV_A_ &gotasync); 3606 evpipe_write (EV_A_ &async_pending);
2721} 3607}
2722#endif 3608#endif
2723 3609
2724/*****************************************************************************/ 3610/*****************************************************************************/
2725 3611
… …
2735once_cb (EV_P_ struct ev_once *once, int revents) 3621once_cb (EV_P_ struct ev_once *once, int revents)
2736{ 3622{
2737 void (*cb)(int revents, void *arg) = once->cb; 3623 void (*cb)(int revents, void *arg) = once->cb;
2738 void *arg = once->arg; 3624 void *arg = once->arg;
2739 3625
2740 ev_io_stop (EV_A_ &once->io); 3626 ev_io_stop (EV_A_ &once->io);
2741 ev_timer_stop (EV_A_ &once->to); 3627 ev_timer_stop (EV_A_ &once->to);
2742 ev_free (once); 3628 ev_free (once);
2743 3629
2744 cb (revents, arg); 3630 cb (revents, arg);
2745} 3631}
2746 3632
2747static void 3633static void
2748once_cb_io (EV_P_ ev_io *w, int revents) 3634once_cb_io (EV_P_ ev_io *w, int revents)
2749{ 3635{
2750 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3636 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3637
3638 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2751} 3639}
2752 3640
2753static void 3641static void
2754once_cb_to (EV_P_ ev_timer *w, int revents) 3642once_cb_to (EV_P_ ev_timer *w, int revents)
2755{ 3643{
2756 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3644 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3645
3646 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2757} 3647}
2758 3648
2759void 3649void
2760ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3650ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2761{ 3651{
2762 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3652 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2763 3653
2764 if (expect_false (!once)) 3654 if (expect_false (!once))
2765 { 3655 {
2766 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3656 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2767 return; 3657 return;
2768 } 3658 }
2769 3659
2770 once->cb = cb; 3660 once->cb = cb;
2771 once->arg = arg; 3661 once->arg = arg;
… …
2783 ev_timer_set (&once->to, timeout, 0.); 3673 ev_timer_set (&once->to, timeout, 0.);
2784 ev_timer_start (EV_A_ &once->to); 3674 ev_timer_start (EV_A_ &once->to);
2785 } 3675 }
2786} 3676}
2787 3677
3678/*****************************************************************************/
3679
3680#if EV_WALK_ENABLE
3681void
3682ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3683{
3684 int i, j;
3685 ev_watcher_list *wl, *wn;
3686
3687 if (types & (EV_IO | EV_EMBED))
3688 for (i = 0; i < anfdmax; ++i)
3689 for (wl = anfds [i].head; wl; )
3690 {
3691 wn = wl->next;
3692
3693#if EV_EMBED_ENABLE
3694 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3695 {
3696 if (types & EV_EMBED)
3697 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3698 }
3699 else
3700#endif
3701#if EV_USE_INOTIFY
3702 if (ev_cb ((ev_io *)wl) == infy_cb)
3703 ;
3704 else
3705#endif
3706 if ((ev_io *)wl != &pipe_w)
3707 if (types & EV_IO)
3708 cb (EV_A_ EV_IO, wl);
3709
3710 wl = wn;
3711 }
3712
3713 if (types & (EV_TIMER | EV_STAT))
3714 for (i = timercnt + HEAP0; i-- > HEAP0; )
3715#if EV_STAT_ENABLE
3716 /*TODO: timer is not always active*/
3717 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3718 {
3719 if (types & EV_STAT)
3720 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3721 }
3722 else
3723#endif
3724 if (types & EV_TIMER)
3725 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3726
3727#if EV_PERIODIC_ENABLE
3728 if (types & EV_PERIODIC)
3729 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3730 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3731#endif
3732
3733#if EV_IDLE_ENABLE
3734 if (types & EV_IDLE)
3735 for (j = NUMPRI; i--; )
3736 for (i = idlecnt [j]; i--; )
3737 cb (EV_A_ EV_IDLE, idles [j][i]);
3738#endif
3739
3740#if EV_FORK_ENABLE
3741 if (types & EV_FORK)
3742 for (i = forkcnt; i--; )
3743 if (ev_cb (forks [i]) != embed_fork_cb)
3744 cb (EV_A_ EV_FORK, forks [i]);
3745#endif
3746
3747#if EV_ASYNC_ENABLE
3748 if (types & EV_ASYNC)
3749 for (i = asynccnt; i--; )
3750 cb (EV_A_ EV_ASYNC, asyncs [i]);
3751#endif
3752
3753#if EV_PREPARE_ENABLE
3754 if (types & EV_PREPARE)
3755 for (i = preparecnt; i--; )
3756# if EV_EMBED_ENABLE
3757 if (ev_cb (prepares [i]) != embed_prepare_cb)
3758# endif
3759 cb (EV_A_ EV_PREPARE, prepares [i]);
3760#endif
3761
3762#if EV_CHECK_ENABLE
3763 if (types & EV_CHECK)
3764 for (i = checkcnt; i--; )
3765 cb (EV_A_ EV_CHECK, checks [i]);
3766#endif
3767
3768#if EV_SIGNAL_ENABLE
3769 if (types & EV_SIGNAL)
3770 for (i = 0; i < EV_NSIG - 1; ++i)
3771 for (wl = signals [i].head; wl; )
3772 {
3773 wn = wl->next;
3774 cb (EV_A_ EV_SIGNAL, wl);
3775 wl = wn;
3776 }
3777#endif
3778
3779#if EV_CHILD_ENABLE
3780 if (types & EV_CHILD)
3781 for (i = (EV_PID_HASHSIZE); i--; )
3782 for (wl = childs [i]; wl; )
3783 {
3784 wn = wl->next;
3785 cb (EV_A_ EV_CHILD, wl);
3786 wl = wn;
3787 }
3788#endif
3789/* EV_STAT 0x00001000 /* stat data changed */
3790/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3791}
3792#endif
3793
2788#if EV_MULTIPLICITY 3794#if EV_MULTIPLICITY
2789 #include "ev_wrap.h" 3795 #include "ev_wrap.h"
2790#endif 3796#endif
2791 3797
2792#ifdef __cplusplus 3798EV_CPP(})
2793}
2794#endif
2795 3799

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