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Comparing libev/ev.c (file contents):
Revision 1.273 by root, Mon Nov 3 14:27:06 2008 UTC vs.
Revision 1.359 by root, Sun Oct 24 17:58:41 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
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
130# endif 157# endif
131 158
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>
… …
160# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 192# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
164# endif 195# endif
196# undef EV_AVOID_STDIO
165#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
166 206
167/* 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 */
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
168 244
169#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 248# else
173# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
174# endif 250# endif
175#endif 251#endif
176 252
177#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 255#endif
180 256
181#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 260# else
185# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
186# endif 262# endif
187#endif 263#endif
188 264
189#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 267#endif
192 268
193#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
194# ifdef _WIN32 270# ifdef _WIN32
195# define EV_USE_POLL 0 271# define EV_USE_POLL 0
196# else 272# else
197# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 274# endif
199#endif 275#endif
200 276
201#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 280# else
205# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
206# endif 282# endif
207#endif 283#endif
208 284
… …
214# define EV_USE_PORT 0 290# define EV_USE_PORT 0
215#endif 291#endif
216 292
217#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 296# else
221# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
222# endif 298# endif
223#endif 299#endif
224 300
225#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 303#endif
232 304
233#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 307#endif
240 308
241#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 312# else
245# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
314# endif
315#endif
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
246# endif 322# endif
247#endif 323#endif
248 324
249#if 0 /* debugging */ 325#if 0 /* debugging */
250# define EV_VERIFY 3 326# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
253#endif 329#endif
254 330
255#ifndef EV_VERIFY 331#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 333#endif
258 334
259#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 337#endif
262 338
263#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
264# 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
265#endif 355#endif
266 356
267/* 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
268 364
269#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
272#endif 368#endif
… …
286# include <sys/select.h> 382# include <sys/select.h>
287# endif 383# endif
288#endif 384#endif
289 385
290#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
291# include <sys/utsname.h>
292# include <sys/statfs.h> 387# include <sys/statfs.h>
293# include <sys/inotify.h> 388# include <sys/inotify.h>
294/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
295# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
296# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
… …
303#endif 398#endif
304 399
305#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
306/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
307# include <stdint.h> 402# include <stdint.h>
308# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
309extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
310# endif 405# endif
311int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
312# ifdef __cplusplus 407# ifdef O_CLOEXEC
313} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
314# endif 412# endif
413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430
431struct signalfd_siginfo
432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
315#endif 436#endif
316 437
317/**/ 438/**/
318 439
319#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
320# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
321#else 442#else
322# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
323#endif 444#endif
324 445
325/* 446/*
… …
332 */ 453 */
333#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
334 455
335#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
336#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
337/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 458
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
338 461
339#if __GNUC__ >= 4 462#if __GNUC__ >= 4
340# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
341# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
342#else 465#else
… …
349 472
350#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
351#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
352#define inline_size static inline 475#define inline_size static inline
353 476
354#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
355# define inline_speed static noinline 480# define inline_speed static noinline
481#endif
482
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484
485#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0)
356#else 487#else
357# define inline_speed static inline
358#endif
359
360#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
361#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
362 490
363#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
364#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
365 493
366typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
368typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
369 497
370#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
371#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
372 500
501#if EV_USE_REALTIME
502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
503/* giving it a reasonably high chance of working on typical architectures */
504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
505#endif
506
373#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
374/* sig_atomic_t is used to avoid per-thread variables or locking but still */
375/* giving it a reasonably high chance of working on typical architetcures */
376static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
509#endif
510
511#ifndef EV_FD_TO_WIN32_HANDLE
512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
513#endif
514#ifndef EV_WIN32_HANDLE_TO_FD
515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
516#endif
517#ifndef EV_WIN32_CLOSE_FD
518# define EV_WIN32_CLOSE_FD(fd) close (fd)
377#endif 519#endif
378 520
379#ifdef _WIN32 521#ifdef _WIN32
380# include "ev_win32.c" 522# include "ev_win32.c"
381#endif 523#endif
382 524
383/*****************************************************************************/ 525/*****************************************************************************/
526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
384 576
385static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
386 578
387void 579void
388ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
… …
398 590
399 if (syserr_cb) 591 if (syserr_cb)
400 syserr_cb (msg); 592 syserr_cb (msg);
401 else 593 else
402 { 594 {
595#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg);
599 ev_printerr (": ");
600 ev_printerr (err);
601 ev_printerr ("\n");
602#else
403 perror (msg); 603 perror (msg);
604#endif
404 abort (); 605 abort ();
405 } 606 }
406} 607}
407 608
408static void * 609static void *
409ev_realloc_emul (void *ptr, long size) 610ev_realloc_emul (void *ptr, long size)
410{ 611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
411 /* some systems, notably openbsd and darwin, fail to properly 615 /* some systems, notably openbsd and darwin, fail to properly
412 * implement realloc (x, 0) (as required by both ansi c-98 and 616 * implement realloc (x, 0) (as required by both ansi c-89 and
413 * the single unix specification, so work around them here. 617 * the single unix specification, so work around them here.
414 */ 618 */
415 619
416 if (size) 620 if (size)
417 return realloc (ptr, size); 621 return realloc (ptr, size);
418 622
419 free (ptr); 623 free (ptr);
420 return 0; 624 return 0;
625#endif
421} 626}
422 627
423static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
424 629
425void 630void
… …
433{ 638{
434 ptr = alloc (ptr, size); 639 ptr = alloc (ptr, size);
435 640
436 if (!ptr && size) 641 if (!ptr && size)
437 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
438 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
439 abort (); 648 abort ();
440 } 649 }
441 650
442 return ptr; 651 return ptr;
443} 652}
… …
445#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
446#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
447 656
448/*****************************************************************************/ 657/*****************************************************************************/
449 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
450typedef struct 663typedef struct
451{ 664{
452 WL head; 665 WL head;
453 unsigned char events; 666 unsigned char events; /* the events watched for */
454 unsigned char reify; 667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
455 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
456 unsigned char unused; 669 unsigned char unused;
457#if EV_USE_EPOLL 670#if EV_USE_EPOLL
458 unsigned int egen; /* generation counter to counter epoll bugs */ 671 unsigned int egen; /* generation counter to counter epoll bugs */
459#endif 672#endif
460#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
461 SOCKET handle; 674 SOCKET handle;
462#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
463} ANFD; 679} ANFD;
464 680
681/* stores the pending event set for a given watcher */
465typedef struct 682typedef struct
466{ 683{
467 W w; 684 W w;
468 int events; 685 int events; /* the pending event set for the given watcher */
469} ANPENDING; 686} ANPENDING;
470 687
471#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
472/* hash table entry per inotify-id */ 689/* hash table entry per inotify-id */
473typedef struct 690typedef struct
… …
476} ANFS; 693} ANFS;
477#endif 694#endif
478 695
479/* Heap Entry */ 696/* Heap Entry */
480#if EV_HEAP_CACHE_AT 697#if EV_HEAP_CACHE_AT
698 /* a heap element */
481 typedef struct { 699 typedef struct {
482 ev_tstamp at; 700 ev_tstamp at;
483 WT w; 701 WT w;
484 } ANHE; 702 } ANHE;
485 703
486 #define ANHE_w(he) (he).w /* access watcher, read-write */ 704 #define ANHE_w(he) (he).w /* access watcher, read-write */
487 #define ANHE_at(he) (he).at /* access cached at, read-only */ 705 #define ANHE_at(he) (he).at /* access cached at, read-only */
488 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
489#else 707#else
708 /* a heap element */
490 typedef WT ANHE; 709 typedef WT ANHE;
491 710
492 #define ANHE_w(he) (he) 711 #define ANHE_w(he) (he)
493 #define ANHE_at(he) (he)->at 712 #define ANHE_at(he) (he)->at
494 #define ANHE_at_cache(he) 713 #define ANHE_at_cache(he)
… …
518 737
519 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
520 739
521#endif 740#endif
522 741
742#if EV_FEATURE_API
743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
745# define EV_INVOKE_PENDING invoke_cb (EV_A)
746#else
747# define EV_RELEASE_CB (void)0
748# define EV_ACQUIRE_CB (void)0
749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
750#endif
751
752#define EVBREAK_RECURSE 0x80
753
523/*****************************************************************************/ 754/*****************************************************************************/
524 755
756#ifndef EV_HAVE_EV_TIME
525ev_tstamp 757ev_tstamp
526ev_time (void) 758ev_time (void)
527{ 759{
528#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
529 struct timespec ts; 763 struct timespec ts;
530 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
531 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
532#else 766 }
767#endif
768
533 struct timeval tv; 769 struct timeval tv;
534 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
535 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
536#endif
537} 772}
773#endif
538 774
539ev_tstamp inline_size 775inline_size ev_tstamp
540get_clock (void) 776get_clock (void)
541{ 777{
542#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
543 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
544 { 780 {
… …
565 if (delay > 0.) 801 if (delay > 0.)
566 { 802 {
567#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
568 struct timespec ts; 804 struct timespec ts;
569 805
570 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
571 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
572
573 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
574#elif defined(_WIN32) 808#elif defined(_WIN32)
575 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
576#else 810#else
577 struct timeval tv; 811 struct timeval tv;
578 812
579 tv.tv_sec = (time_t)delay;
580 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
581
582 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
583 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 814 /* something not guaranteed by newer posix versions, but guaranteed */
584 /* by older ones */ 815 /* by older ones */
816 EV_TV_SET (tv, delay);
585 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
586#endif 818#endif
587 } 819 }
588} 820}
589 821
590/*****************************************************************************/ 822/*****************************************************************************/
591 823
592#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
593 825
594int inline_size 826/* find a suitable new size for the given array, */
827/* hopefully by rounding to a nice-to-malloc size */
828inline_size int
595array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
596{ 830{
597 int ncur = cur + 1; 831 int ncur = cur + 1;
598 832
599 do 833 do
… …
640 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
641 } 875 }
642#endif 876#endif
643 877
644#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
645 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
646 880
647/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
648 888
649void noinline 889void noinline
650ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
651{ 891{
652 W w_ = (W)w; 892 W w_ = (W)w;
… …
661 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
662 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
663 } 903 }
664} 904}
665 905
666void inline_speed 906inline_speed void
907feed_reverse (EV_P_ W w)
908{
909 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
910 rfeeds [rfeedcnt++] = w;
911}
912
913inline_size void
914feed_reverse_done (EV_P_ int revents)
915{
916 do
917 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
918 while (rfeedcnt);
919}
920
921inline_speed void
667queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
668{ 923{
669 int i; 924 int i;
670 925
671 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
672 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
673} 928}
674 929
675/*****************************************************************************/ 930/*****************************************************************************/
676 931
677void inline_speed 932inline_speed void
678fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
679{ 934{
680 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
681 ev_io *w; 936 ev_io *w;
682 937
683 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
687 if (ev) 942 if (ev)
688 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
689 } 944 }
690} 945}
691 946
947/* do not submit kernel events for fds that have reify set */
948/* because that means they changed while we were polling for new events */
949inline_speed void
950fd_event (EV_P_ int fd, int revents)
951{
952 ANFD *anfd = anfds + fd;
953
954 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents);
956}
957
692void 958void
693ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
694{ 960{
695 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
696 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
697} 963}
698 964
699void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
700fd_reify (EV_P) 968fd_reify (EV_P)
701{ 969{
702 int i; 970 int i;
703 971
704 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
705 { 973 {
706 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
707 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
708 ev_io *w; 976 ev_io *w;
709 977
710 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
711 980
712 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
713 events |= (unsigned char)w->events;
714 982
715#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
716 if (events) 984 if (o_reify & EV__IOFDSET)
717 { 985 {
718 unsigned long arg; 986 unsigned long arg;
719 #ifdef EV_FD_TO_WIN32_HANDLE
720 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
721 #else
722 anfd->handle = _get_osfhandle (fd);
723 #endif
724 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
725 } 990 }
726#endif 991#endif
727 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
728 { 994 {
729 unsigned char o_events = anfd->events;
730 unsigned char o_reify = anfd->reify;
731
732 anfd->reify = 0;
733 anfd->events = events; 995 anfd->events = 0;
734 996
735 if (o_events != events || o_reify & EV_IOFDSET) 997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
736 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
737 }
738 } 1006 }
739 1007
740 fdchangecnt = 0; 1008 fdchangecnt = 0;
741} 1009}
742 1010
743void inline_size 1011/* something about the given fd changed */
1012inline_size void
744fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
745{ 1014{
746 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
747 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
748 1017
… …
752 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
753 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
754 } 1023 }
755} 1024}
756 1025
757void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
758fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
759{ 1029{
760 ev_io *w; 1030 ev_io *w;
761 1031
762 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
764 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
765 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
766 } 1036 }
767} 1037}
768 1038
769int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
770fd_valid (int fd) 1041fd_valid (int fd)
771{ 1042{
772#ifdef _WIN32 1043#ifdef _WIN32
773 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
774#else 1045#else
775 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
776#endif 1047#endif
777} 1048}
778 1049
… …
796 1067
797 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
798 if (anfds [fd].events) 1069 if (anfds [fd].events)
799 { 1070 {
800 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
801 return; 1072 break;
802 } 1073 }
803} 1074}
804 1075
805/* usually called after fork if backend needs to re-arm all fds from scratch */ 1076/* usually called after fork if backend needs to re-arm all fds from scratch */
806static void noinline 1077static void noinline
… …
811 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
812 if (anfds [fd].events) 1083 if (anfds [fd].events)
813 { 1084 {
814 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
815 anfds [fd].emask = 0; 1086 anfds [fd].emask = 0;
816 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
817 } 1088 }
818} 1089}
819 1090
1091/* used to prepare libev internal fd's */
1092/* this is not fork-safe */
1093inline_speed void
1094fd_intern (int fd)
1095{
1096#ifdef _WIN32
1097 unsigned long arg = 1;
1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1099#else
1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
1101 fcntl (fd, F_SETFL, O_NONBLOCK);
1102#endif
1103}
1104
820/*****************************************************************************/ 1105/*****************************************************************************/
821 1106
822/* 1107/*
823 * the heap functions want a real array index. array index 0 uis guaranteed to not 1108 * the heap functions want a real array index. array index 0 is guaranteed to not
824 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
825 * the branching factor of the d-tree. 1110 * the branching factor of the d-tree.
826 */ 1111 */
827 1112
828/* 1113/*
… …
837#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
838#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
839#define UPHEAP_DONE(p,k) ((p) == (k)) 1124#define UPHEAP_DONE(p,k) ((p) == (k))
840 1125
841/* away from the root */ 1126/* away from the root */
842void inline_speed 1127inline_speed void
843downheap (ANHE *heap, int N, int k) 1128downheap (ANHE *heap, int N, int k)
844{ 1129{
845 ANHE he = heap [k]; 1130 ANHE he = heap [k];
846 ANHE *E = heap + N + HEAP0; 1131 ANHE *E = heap + N + HEAP0;
847 1132
… …
887#define HEAP0 1 1172#define HEAP0 1
888#define HPARENT(k) ((k) >> 1) 1173#define HPARENT(k) ((k) >> 1)
889#define UPHEAP_DONE(p,k) (!(p)) 1174#define UPHEAP_DONE(p,k) (!(p))
890 1175
891/* away from the root */ 1176/* away from the root */
892void inline_speed 1177inline_speed void
893downheap (ANHE *heap, int N, int k) 1178downheap (ANHE *heap, int N, int k)
894{ 1179{
895 ANHE he = heap [k]; 1180 ANHE he = heap [k];
896 1181
897 for (;;) 1182 for (;;)
898 { 1183 {
899 int c = k << 1; 1184 int c = k << 1;
900 1185
901 if (c > N + HEAP0 - 1) 1186 if (c >= N + HEAP0)
902 break; 1187 break;
903 1188
904 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
905 ? 1 : 0; 1190 ? 1 : 0;
906 1191
… …
917 ev_active (ANHE_w (he)) = k; 1202 ev_active (ANHE_w (he)) = k;
918} 1203}
919#endif 1204#endif
920 1205
921/* towards the root */ 1206/* towards the root */
922void inline_speed 1207inline_speed void
923upheap (ANHE *heap, int k) 1208upheap (ANHE *heap, int k)
924{ 1209{
925 ANHE he = heap [k]; 1210 ANHE he = heap [k];
926 1211
927 for (;;) 1212 for (;;)
… …
938 1223
939 heap [k] = he; 1224 heap [k] = he;
940 ev_active (ANHE_w (he)) = k; 1225 ev_active (ANHE_w (he)) = k;
941} 1226}
942 1227
943void inline_size 1228/* move an element suitably so it is in a correct place */
1229inline_size void
944adjustheap (ANHE *heap, int N, int k) 1230adjustheap (ANHE *heap, int N, int k)
945{ 1231{
946 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
947 upheap (heap, k); 1233 upheap (heap, k);
948 else 1234 else
949 downheap (heap, N, k); 1235 downheap (heap, N, k);
950} 1236}
951 1237
952/* rebuild the heap: this function is used only once and executed rarely */ 1238/* rebuild the heap: this function is used only once and executed rarely */
953void inline_size 1239inline_size void
954reheap (ANHE *heap, int N) 1240reheap (ANHE *heap, int N)
955{ 1241{
956 int i; 1242 int i;
957 1243
958 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1244 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
961 upheap (heap, i + HEAP0); 1247 upheap (heap, i + HEAP0);
962} 1248}
963 1249
964/*****************************************************************************/ 1250/*****************************************************************************/
965 1251
1252/* associate signal watchers to a signal signal */
966typedef struct 1253typedef struct
967{ 1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
968 WL head; 1259 WL head;
969 EV_ATOMIC_T gotsig;
970} ANSIG; 1260} ANSIG;
971 1261
972static ANSIG *signals; 1262static ANSIG signals [EV_NSIG - 1];
973static int signalmax;
974
975static EV_ATOMIC_T gotsig;
976 1263
977/*****************************************************************************/ 1264/*****************************************************************************/
978 1265
979void inline_speed 1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
980fd_intern (int fd)
981{
982#ifdef _WIN32
983 unsigned long arg = 1;
984 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
985#else
986 fcntl (fd, F_SETFD, FD_CLOEXEC);
987 fcntl (fd, F_SETFL, O_NONBLOCK);
988#endif
989}
990 1267
991static void noinline 1268static void noinline
992evpipe_init (EV_P) 1269evpipe_init (EV_P)
993{ 1270{
994 if (!ev_is_active (&pipeev)) 1271 if (!ev_is_active (&pipe_w))
995 { 1272 {
996#if EV_USE_EVENTFD 1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
997 if ((evfd = eventfd (0, 0)) >= 0) 1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
998 { 1279 {
999 evpipe [0] = -1; 1280 evpipe [0] = -1;
1000 fd_intern (evfd); 1281 fd_intern (evfd); /* doing it twice doesn't hurt */
1001 ev_io_set (&pipeev, evfd, EV_READ); 1282 ev_io_set (&pipe_w, evfd, EV_READ);
1002 } 1283 }
1003 else 1284 else
1004#endif 1285# endif
1005 { 1286 {
1006 while (pipe (evpipe)) 1287 while (pipe (evpipe))
1007 ev_syserr ("(libev) error creating signal/async pipe"); 1288 ev_syserr ("(libev) error creating signal/async pipe");
1008 1289
1009 fd_intern (evpipe [0]); 1290 fd_intern (evpipe [0]);
1010 fd_intern (evpipe [1]); 1291 fd_intern (evpipe [1]);
1011 ev_io_set (&pipeev, evpipe [0], EV_READ); 1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1012 } 1293 }
1013 1294
1014 ev_io_start (EV_A_ &pipeev); 1295 ev_io_start (EV_A_ &pipe_w);
1015 ev_unref (EV_A); /* watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1016 } 1297 }
1017} 1298}
1018 1299
1019void inline_size 1300inline_size void
1020evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1021{ 1302{
1022 if (!*flag) 1303 if (!*flag)
1023 { 1304 {
1024 int old_errno = errno; /* save errno because write might clobber it */ 1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1025 1307
1026 *flag = 1; 1308 *flag = 1;
1027 1309
1028#if EV_USE_EVENTFD 1310#if EV_USE_EVENTFD
1029 if (evfd >= 0) 1311 if (evfd >= 0)
… …
1031 uint64_t counter = 1; 1313 uint64_t counter = 1;
1032 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
1033 } 1315 }
1034 else 1316 else
1035#endif 1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1036 write (evpipe [1], &old_errno, 1); 1323 write (evpipe [1], &dummy, 1);
1037 1324
1038 errno = old_errno; 1325 errno = old_errno;
1039 } 1326 }
1040} 1327}
1041 1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
1042static void 1331static void
1043pipecb (EV_P_ ev_io *iow, int revents) 1332pipecb (EV_P_ ev_io *iow, int revents)
1044{ 1333{
1334 int i;
1335
1045#if EV_USE_EVENTFD 1336#if EV_USE_EVENTFD
1046 if (evfd >= 0) 1337 if (evfd >= 0)
1047 { 1338 {
1048 uint64_t counter; 1339 uint64_t counter;
1049 read (evfd, &counter, sizeof (uint64_t)); 1340 read (evfd, &counter, sizeof (uint64_t));
1050 } 1341 }
1051 else 1342 else
1052#endif 1343#endif
1053 { 1344 {
1054 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1055 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
1056 } 1348 }
1057 1349
1058 if (gotsig && ev_is_default_loop (EV_A)) 1350 if (sig_pending)
1059 { 1351 {
1060 int signum; 1352 sig_pending = 0;
1061 gotsig = 0;
1062 1353
1063 for (signum = signalmax; signum--; ) 1354 for (i = EV_NSIG - 1; i--; )
1064 if (signals [signum].gotsig) 1355 if (expect_false (signals [i].pending))
1065 ev_feed_signal_event (EV_A_ signum + 1); 1356 ev_feed_signal_event (EV_A_ i + 1);
1066 } 1357 }
1067 1358
1068#if EV_ASYNC_ENABLE 1359#if EV_ASYNC_ENABLE
1069 if (gotasync) 1360 if (async_pending)
1070 { 1361 {
1071 int i; 1362 async_pending = 0;
1072 gotasync = 0;
1073 1363
1074 for (i = asynccnt; i--; ) 1364 for (i = asynccnt; i--; )
1075 if (asyncs [i]->sent) 1365 if (asyncs [i]->sent)
1076 { 1366 {
1077 asyncs [i]->sent = 0; 1367 asyncs [i]->sent = 0;
… …
1085 1375
1086static void 1376static void
1087ev_sighandler (int signum) 1377ev_sighandler (int signum)
1088{ 1378{
1089#if EV_MULTIPLICITY 1379#if EV_MULTIPLICITY
1090 struct ev_loop *loop = &default_loop_struct; 1380 EV_P = signals [signum - 1].loop;
1091#endif 1381#endif
1092 1382
1093#if _WIN32 1383#ifdef _WIN32
1094 signal (signum, ev_sighandler); 1384 signal (signum, ev_sighandler);
1095#endif 1385#endif
1096 1386
1097 signals [signum - 1].gotsig = 1; 1387 signals [signum - 1].pending = 1;
1098 evpipe_write (EV_A_ &gotsig); 1388 evpipe_write (EV_A_ &sig_pending);
1099} 1389}
1100 1390
1101void noinline 1391void noinline
1102ev_feed_signal_event (EV_P_ int signum) 1392ev_feed_signal_event (EV_P_ int signum)
1103{ 1393{
1104 WL w; 1394 WL w;
1105 1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1106#if EV_MULTIPLICITY 1401#if EV_MULTIPLICITY
1107 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1402 /* it is permissible to try to feed a signal to the wrong loop */
1108#endif 1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1109 1404
1110 --signum; 1405 if (expect_false (signals [signum].loop != EV_A))
1111
1112 if (signum < 0 || signum >= signalmax)
1113 return; 1406 return;
1407#endif
1114 1408
1115 signals [signum].gotsig = 0; 1409 signals [signum].pending = 0;
1116 1410
1117 for (w = signals [signum].head; w; w = w->next) 1411 for (w = signals [signum].head; w; w = w->next)
1118 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1119} 1413}
1120 1414
1415#if EV_USE_SIGNALFD
1416static void
1417sigfdcb (EV_P_ ev_io *iow, int revents)
1418{
1419 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1420
1421 for (;;)
1422 {
1423 ssize_t res = read (sigfd, si, sizeof (si));
1424
1425 /* not ISO-C, as res might be -1, but works with SuS */
1426 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1427 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1428
1429 if (res < (ssize_t)sizeof (si))
1430 break;
1431 }
1432}
1433#endif
1434
1435#endif
1436
1121/*****************************************************************************/ 1437/*****************************************************************************/
1122 1438
1439#if EV_CHILD_ENABLE
1123static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
1124
1125#ifndef _WIN32
1126 1441
1127static ev_signal childev; 1442static ev_signal childev;
1128 1443
1129#ifndef WIFCONTINUED 1444#ifndef WIFCONTINUED
1130# define WIFCONTINUED(status) 0 1445# define WIFCONTINUED(status) 0
1131#endif 1446#endif
1132 1447
1133void inline_speed 1448/* handle a single child status event */
1449inline_speed void
1134child_reap (EV_P_ int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
1135{ 1451{
1136 ev_child *w; 1452 ev_child *w;
1137 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1138 1454
1139 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1455 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1140 { 1456 {
1141 if ((w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1142 && (!traced || (w->flags & 1))) 1458 && (!traced || (w->flags & 1)))
1143 { 1459 {
1144 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1460 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1151 1467
1152#ifndef WCONTINUED 1468#ifndef WCONTINUED
1153# define WCONTINUED 0 1469# define WCONTINUED 0
1154#endif 1470#endif
1155 1471
1472/* called on sigchld etc., calls waitpid */
1156static void 1473static void
1157childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
1158{ 1475{
1159 int pid, status; 1476 int pid, status;
1160 1477
… …
1168 /* make sure we are called again until all children have been reaped */ 1485 /* make sure we are called again until all children have been reaped */
1169 /* we need to do it this way so that the callback gets called before we continue */ 1486 /* we need to do it this way so that the callback gets called before we continue */
1170 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1171 1488
1172 child_reap (EV_A_ pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1173 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
1174 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1491 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1175} 1492}
1176 1493
1177#endif 1494#endif
1178 1495
1179/*****************************************************************************/ 1496/*****************************************************************************/
1180 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1181#if EV_USE_PORT 1501#if EV_USE_PORT
1182# include "ev_port.c" 1502# include "ev_port.c"
1183#endif 1503#endif
1184#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1185# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
1241 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
1242 /* it usually doesn't work correctly on anything but sockets and pipes */ 1562 /* it usually doesn't work correctly on anything but sockets and pipes */
1243 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
1244#endif 1564#endif
1245#ifdef __APPLE__ 1565#ifdef __APPLE__
1246 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
1247 flags &= ~EVBACKEND_POLL; 1567 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1568 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1569#endif
1570#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1248#endif 1572#endif
1249 1573
1250 return flags; 1574 return flags;
1251} 1575}
1252 1576
… …
1254ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1255{ 1579{
1256 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1257 1581
1258 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1259 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1260 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1261 1585
1262 return flags; 1586 return flags;
1263} 1587}
1264 1588
1265unsigned int 1589unsigned int
1266ev_backend (EV_P) 1590ev_backend (EV_P)
1267{ 1591{
1268 return backend; 1592 return backend;
1269} 1593}
1270 1594
1595#if EV_FEATURE_API
1271unsigned int 1596unsigned int
1272ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1273{ 1598{
1274 return loop_count; 1599 return loop_count;
1600}
1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1275} 1606}
1276 1607
1277void 1608void
1278ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1279{ 1610{
… …
1284ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1285{ 1616{
1286 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1287} 1618}
1288 1619
1620void
1621ev_set_userdata (EV_P_ void *data)
1622{
1623 userdata = data;
1624}
1625
1626void *
1627ev_userdata (EV_P)
1628{
1629 return userdata;
1630}
1631
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1633{
1634 invoke_cb = invoke_pending_cb;
1635}
1636
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1638{
1639 release_cb = release;
1640 acquire_cb = acquire;
1641}
1642#endif
1643
1644/* initialise a loop structure, must be zero-initialised */
1289static void noinline 1645static void noinline
1290loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1291{ 1647{
1292 if (!backend) 1648 if (!backend)
1293 { 1649 {
1650#if EV_USE_REALTIME
1651 if (!have_realtime)
1652 {
1653 struct timespec ts;
1654
1655 if (!clock_gettime (CLOCK_REALTIME, &ts))
1656 have_realtime = 1;
1657 }
1658#endif
1659
1294#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1295 { 1662 {
1296 struct timespec ts; 1663 struct timespec ts;
1664
1297 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1298 have_monotonic = 1; 1666 have_monotonic = 1;
1299 } 1667 }
1300#endif 1668#endif
1669
1670 /* pid check not overridable via env */
1671#ifndef _WIN32
1672 if (flags & EVFLAG_FORKCHECK)
1673 curpid = getpid ();
1674#endif
1675
1676 if (!(flags & EVFLAG_NOENV)
1677 && !enable_secure ()
1678 && getenv ("LIBEV_FLAGS"))
1679 flags = atoi (getenv ("LIBEV_FLAGS"));
1301 1680
1302 ev_rt_now = ev_time (); 1681 ev_rt_now = ev_time ();
1303 mn_now = get_clock (); 1682 mn_now = get_clock ();
1304 now_floor = mn_now; 1683 now_floor = mn_now;
1305 rtmn_diff = ev_rt_now - mn_now; 1684 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending;
1687#endif
1306 1688
1307 io_blocktime = 0.; 1689 io_blocktime = 0.;
1308 timeout_blocktime = 0.; 1690 timeout_blocktime = 0.;
1309 backend = 0; 1691 backend = 0;
1310 backend_fd = -1; 1692 backend_fd = -1;
1311 gotasync = 0; 1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1312#if EV_USE_INOTIFY 1697#if EV_USE_INOTIFY
1313 fs_fd = -2; 1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1314#endif 1699#endif
1315 1700#if EV_USE_SIGNALFD
1316 /* pid check not overridable via env */ 1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1317#ifndef _WIN32
1318 if (flags & EVFLAG_FORKCHECK)
1319 curpid = getpid ();
1320#endif 1702#endif
1321
1322 if (!(flags & EVFLAG_NOENV)
1323 && !enable_secure ()
1324 && getenv ("LIBEV_FLAGS"))
1325 flags = atoi (getenv ("LIBEV_FLAGS"));
1326 1703
1327 if (!(flags & 0x0000ffffU)) 1704 if (!(flags & 0x0000ffffU))
1328 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1329 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1330#if EV_USE_PORT 1710#if EV_USE_PORT
1331 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1332#endif 1712#endif
1333#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1334 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1341#endif 1721#endif
1342#if EV_USE_SELECT 1722#if EV_USE_SELECT
1343 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1344#endif 1724#endif
1345 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1346 ev_init (&pipeev, pipecb); 1729 ev_init (&pipe_w, pipecb);
1347 ev_set_priority (&pipeev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1348 } 1732 }
1349} 1733}
1350 1734
1351static void noinline 1735/* free up a loop structure */
1736void
1352loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
1353{ 1738{
1354 int i; 1739 int i;
1355 1740
1741#if EV_CHILD_ENABLE
1742 if (ev_is_active (&childev))
1743 {
1744 ev_ref (EV_A); /* child watcher */
1745 ev_signal_stop (EV_A_ &childev);
1746 }
1747#endif
1748
1356 if (ev_is_active (&pipeev)) 1749 if (ev_is_active (&pipe_w))
1357 { 1750 {
1358 ev_ref (EV_A); /* signal watcher */ 1751 /*ev_ref (EV_A);*/
1359 ev_io_stop (EV_A_ &pipeev); 1752 /*ev_io_stop (EV_A_ &pipe_w);*/
1360 1753
1361#if EV_USE_EVENTFD 1754#if EV_USE_EVENTFD
1362 if (evfd >= 0) 1755 if (evfd >= 0)
1363 close (evfd); 1756 close (evfd);
1364#endif 1757#endif
1365 1758
1366 if (evpipe [0] >= 0) 1759 if (evpipe [0] >= 0)
1367 { 1760 {
1368 close (evpipe [0]); 1761 EV_WIN32_CLOSE_FD (evpipe [0]);
1369 close (evpipe [1]); 1762 EV_WIN32_CLOSE_FD (evpipe [1]);
1370 } 1763 }
1371 } 1764 }
1765
1766#if EV_USE_SIGNALFD
1767 if (ev_is_active (&sigfd_w))
1768 close (sigfd);
1769#endif
1372 1770
1373#if EV_USE_INOTIFY 1771#if EV_USE_INOTIFY
1374 if (fs_fd >= 0) 1772 if (fs_fd >= 0)
1375 close (fs_fd); 1773 close (fs_fd);
1376#endif 1774#endif
1377 1775
1378 if (backend_fd >= 0) 1776 if (backend_fd >= 0)
1379 close (backend_fd); 1777 close (backend_fd);
1380 1778
1779#if EV_USE_IOCP
1780 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1781#endif
1381#if EV_USE_PORT 1782#if EV_USE_PORT
1382 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1783 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1383#endif 1784#endif
1384#if EV_USE_KQUEUE 1785#if EV_USE_KQUEUE
1385 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1786 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1400#if EV_IDLE_ENABLE 1801#if EV_IDLE_ENABLE
1401 array_free (idle, [i]); 1802 array_free (idle, [i]);
1402#endif 1803#endif
1403 } 1804 }
1404 1805
1405 ev_free (anfds); anfdmax = 0; 1806 ev_free (anfds); anfds = 0; anfdmax = 0;
1406 1807
1407 /* have to use the microsoft-never-gets-it-right macro */ 1808 /* have to use the microsoft-never-gets-it-right macro */
1809 array_free (rfeed, EMPTY);
1408 array_free (fdchange, EMPTY); 1810 array_free (fdchange, EMPTY);
1409 array_free (timer, EMPTY); 1811 array_free (timer, EMPTY);
1410#if EV_PERIODIC_ENABLE 1812#if EV_PERIODIC_ENABLE
1411 array_free (periodic, EMPTY); 1813 array_free (periodic, EMPTY);
1412#endif 1814#endif
… …
1418#if EV_ASYNC_ENABLE 1820#if EV_ASYNC_ENABLE
1419 array_free (async, EMPTY); 1821 array_free (async, EMPTY);
1420#endif 1822#endif
1421 1823
1422 backend = 0; 1824 backend = 0;
1825
1826#if EV_MULTIPLICITY
1827 if (ev_is_default_loop (EV_A))
1828#endif
1829 ev_default_loop_ptr = 0;
1830#if EV_MULTIPLICITY
1831 else
1832 ev_free (EV_A);
1833#endif
1423} 1834}
1424 1835
1425#if EV_USE_INOTIFY 1836#if EV_USE_INOTIFY
1426void inline_size infy_fork (EV_P); 1837inline_size void infy_fork (EV_P);
1427#endif 1838#endif
1428 1839
1429void inline_size 1840inline_size void
1430loop_fork (EV_P) 1841loop_fork (EV_P)
1431{ 1842{
1432#if EV_USE_PORT 1843#if EV_USE_PORT
1433 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1844 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1434#endif 1845#endif
… …
1440#endif 1851#endif
1441#if EV_USE_INOTIFY 1852#if EV_USE_INOTIFY
1442 infy_fork (EV_A); 1853 infy_fork (EV_A);
1443#endif 1854#endif
1444 1855
1445 if (ev_is_active (&pipeev)) 1856 if (ev_is_active (&pipe_w))
1446 { 1857 {
1447 /* this "locks" the handlers against writing to the pipe */ 1858 /* this "locks" the handlers against writing to the pipe */
1448 /* while we modify the fd vars */ 1859 /* while we modify the fd vars */
1449 gotsig = 1; 1860 sig_pending = 1;
1450#if EV_ASYNC_ENABLE 1861#if EV_ASYNC_ENABLE
1451 gotasync = 1; 1862 async_pending = 1;
1452#endif 1863#endif
1453 1864
1454 ev_ref (EV_A); 1865 ev_ref (EV_A);
1455 ev_io_stop (EV_A_ &pipeev); 1866 ev_io_stop (EV_A_ &pipe_w);
1456 1867
1457#if EV_USE_EVENTFD 1868#if EV_USE_EVENTFD
1458 if (evfd >= 0) 1869 if (evfd >= 0)
1459 close (evfd); 1870 close (evfd);
1460#endif 1871#endif
1461 1872
1462 if (evpipe [0] >= 0) 1873 if (evpipe [0] >= 0)
1463 { 1874 {
1464 close (evpipe [0]); 1875 EV_WIN32_CLOSE_FD (evpipe [0]);
1465 close (evpipe [1]); 1876 EV_WIN32_CLOSE_FD (evpipe [1]);
1466 } 1877 }
1467 1878
1879#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1468 evpipe_init (EV_A); 1880 evpipe_init (EV_A);
1469 /* now iterate over everything, in case we missed something */ 1881 /* now iterate over everything, in case we missed something */
1470 pipecb (EV_A_ &pipeev, EV_READ); 1882 pipecb (EV_A_ &pipe_w, EV_READ);
1883#endif
1471 } 1884 }
1472 1885
1473 postfork = 0; 1886 postfork = 0;
1474} 1887}
1475 1888
1476#if EV_MULTIPLICITY 1889#if EV_MULTIPLICITY
1477 1890
1478struct ev_loop * 1891struct ev_loop *
1479ev_loop_new (unsigned int flags) 1892ev_loop_new (unsigned int flags)
1480{ 1893{
1481 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1894 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1482 1895
1483 memset (loop, 0, sizeof (struct ev_loop)); 1896 memset (EV_A, 0, sizeof (struct ev_loop));
1484
1485 loop_init (EV_A_ flags); 1897 loop_init (EV_A_ flags);
1486 1898
1487 if (ev_backend (EV_A)) 1899 if (ev_backend (EV_A))
1488 return loop; 1900 return EV_A;
1489 1901
1902 ev_free (EV_A);
1490 return 0; 1903 return 0;
1491} 1904}
1492 1905
1493void 1906#endif /* multiplicity */
1494ev_loop_destroy (EV_P)
1495{
1496 loop_destroy (EV_A);
1497 ev_free (loop);
1498}
1499
1500void
1501ev_loop_fork (EV_P)
1502{
1503 postfork = 1; /* must be in line with ev_default_fork */
1504}
1505 1907
1506#if EV_VERIFY 1908#if EV_VERIFY
1507static void noinline 1909static void noinline
1508verify_watcher (EV_P_ W w) 1910verify_watcher (EV_P_ W w)
1509{ 1911{
1510 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1912 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1511 1913
1512 if (w->pending) 1914 if (w->pending)
1513 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1915 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1514} 1916}
1515 1917
1516static void noinline 1918static void noinline
1517verify_heap (EV_P_ ANHE *heap, int N) 1919verify_heap (EV_P_ ANHE *heap, int N)
1518{ 1920{
1519 int i; 1921 int i;
1520 1922
1521 for (i = HEAP0; i < N + HEAP0; ++i) 1923 for (i = HEAP0; i < N + HEAP0; ++i)
1522 { 1924 {
1523 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1925 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1524 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1926 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1525 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1927 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1526 1928
1527 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1929 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1528 } 1930 }
1529} 1931}
1530 1932
1531static void noinline 1933static void noinline
1532array_verify (EV_P_ W *ws, int cnt) 1934array_verify (EV_P_ W *ws, int cnt)
1533{ 1935{
1534 while (cnt--) 1936 while (cnt--)
1535 { 1937 {
1536 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1938 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1537 verify_watcher (EV_A_ ws [cnt]); 1939 verify_watcher (EV_A_ ws [cnt]);
1538 } 1940 }
1539} 1941}
1540#endif 1942#endif
1541 1943
1944#if EV_FEATURE_API
1542void 1945void
1543ev_loop_verify (EV_P) 1946ev_verify (EV_P)
1544{ 1947{
1545#if EV_VERIFY 1948#if EV_VERIFY
1546 int i; 1949 int i;
1547 WL w; 1950 WL w;
1548 1951
1549 assert (activecnt >= -1); 1952 assert (activecnt >= -1);
1550 1953
1551 assert (fdchangemax >= fdchangecnt); 1954 assert (fdchangemax >= fdchangecnt);
1552 for (i = 0; i < fdchangecnt; ++i) 1955 for (i = 0; i < fdchangecnt; ++i)
1553 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1956 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1554 1957
1555 assert (anfdmax >= 0); 1958 assert (anfdmax >= 0);
1556 for (i = 0; i < anfdmax; ++i) 1959 for (i = 0; i < anfdmax; ++i)
1557 for (w = anfds [i].head; w; w = w->next) 1960 for (w = anfds [i].head; w; w = w->next)
1558 { 1961 {
1559 verify_watcher (EV_A_ (W)w); 1962 verify_watcher (EV_A_ (W)w);
1560 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1963 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1561 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1964 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1562 } 1965 }
1563 1966
1564 assert (timermax >= timercnt); 1967 assert (timermax >= timercnt);
1565 verify_heap (EV_A_ timers, timercnt); 1968 verify_heap (EV_A_ timers, timercnt);
1566 1969
… …
1587#if EV_ASYNC_ENABLE 1990#if EV_ASYNC_ENABLE
1588 assert (asyncmax >= asynccnt); 1991 assert (asyncmax >= asynccnt);
1589 array_verify (EV_A_ (W *)asyncs, asynccnt); 1992 array_verify (EV_A_ (W *)asyncs, asynccnt);
1590#endif 1993#endif
1591 1994
1995#if EV_PREPARE_ENABLE
1592 assert (preparemax >= preparecnt); 1996 assert (preparemax >= preparecnt);
1593 array_verify (EV_A_ (W *)prepares, preparecnt); 1997 array_verify (EV_A_ (W *)prepares, preparecnt);
1998#endif
1594 1999
2000#if EV_CHECK_ENABLE
1595 assert (checkmax >= checkcnt); 2001 assert (checkmax >= checkcnt);
1596 array_verify (EV_A_ (W *)checks, checkcnt); 2002 array_verify (EV_A_ (W *)checks, checkcnt);
2003#endif
1597 2004
1598# if 0 2005# if 0
2006#if EV_CHILD_ENABLE
1599 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2007 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1600 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2008 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2009#endif
1601# endif 2010# endif
1602#endif 2011#endif
1603} 2012}
1604 2013#endif
1605#endif /* multiplicity */
1606 2014
1607#if EV_MULTIPLICITY 2015#if EV_MULTIPLICITY
1608struct ev_loop * 2016struct ev_loop *
1609ev_default_loop_init (unsigned int flags)
1610#else 2017#else
1611int 2018int
2019#endif
1612ev_default_loop (unsigned int flags) 2020ev_default_loop (unsigned int flags)
1613#endif
1614{ 2021{
1615 if (!ev_default_loop_ptr) 2022 if (!ev_default_loop_ptr)
1616 { 2023 {
1617#if EV_MULTIPLICITY 2024#if EV_MULTIPLICITY
1618 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2025 EV_P = ev_default_loop_ptr = &default_loop_struct;
1619#else 2026#else
1620 ev_default_loop_ptr = 1; 2027 ev_default_loop_ptr = 1;
1621#endif 2028#endif
1622 2029
1623 loop_init (EV_A_ flags); 2030 loop_init (EV_A_ flags);
1624 2031
1625 if (ev_backend (EV_A)) 2032 if (ev_backend (EV_A))
1626 { 2033 {
1627#ifndef _WIN32 2034#if EV_CHILD_ENABLE
1628 ev_signal_init (&childev, childcb, SIGCHLD); 2035 ev_signal_init (&childev, childcb, SIGCHLD);
1629 ev_set_priority (&childev, EV_MAXPRI); 2036 ev_set_priority (&childev, EV_MAXPRI);
1630 ev_signal_start (EV_A_ &childev); 2037 ev_signal_start (EV_A_ &childev);
1631 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2038 ev_unref (EV_A); /* child watcher should not keep loop alive */
1632#endif 2039#endif
… …
1637 2044
1638 return ev_default_loop_ptr; 2045 return ev_default_loop_ptr;
1639} 2046}
1640 2047
1641void 2048void
1642ev_default_destroy (void) 2049ev_loop_fork (EV_P)
1643{ 2050{
1644#if EV_MULTIPLICITY
1645 struct ev_loop *loop = ev_default_loop_ptr;
1646#endif
1647
1648 ev_default_loop_ptr = 0;
1649
1650#ifndef _WIN32
1651 ev_ref (EV_A); /* child watcher */
1652 ev_signal_stop (EV_A_ &childev);
1653#endif
1654
1655 loop_destroy (EV_A);
1656}
1657
1658void
1659ev_default_fork (void)
1660{
1661#if EV_MULTIPLICITY
1662 struct ev_loop *loop = ev_default_loop_ptr;
1663#endif
1664
1665 postfork = 1; /* must be in line with ev_loop_fork */ 2051 postfork = 1; /* must be in line with ev_default_fork */
1666} 2052}
1667 2053
1668/*****************************************************************************/ 2054/*****************************************************************************/
1669 2055
1670void 2056void
1671ev_invoke (EV_P_ void *w, int revents) 2057ev_invoke (EV_P_ void *w, int revents)
1672{ 2058{
1673 EV_CB_INVOKE ((W)w, revents); 2059 EV_CB_INVOKE ((W)w, revents);
1674} 2060}
1675 2061
1676void inline_speed 2062unsigned int
1677call_pending (EV_P) 2063ev_pending_count (EV_P)
2064{
2065 int pri;
2066 unsigned int count = 0;
2067
2068 for (pri = NUMPRI; pri--; )
2069 count += pendingcnt [pri];
2070
2071 return count;
2072}
2073
2074void noinline
2075ev_invoke_pending (EV_P)
1678{ 2076{
1679 int pri; 2077 int pri;
1680 2078
1681 for (pri = NUMPRI; pri--; ) 2079 for (pri = NUMPRI; pri--; )
1682 while (pendingcnt [pri]) 2080 while (pendingcnt [pri])
1683 { 2081 {
1684 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2082 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1685 2083
1686 if (expect_true (p->w))
1687 {
1688 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2084 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2085 /* ^ this is no longer true, as pending_w could be here */
1689 2086
1690 p->w->pending = 0; 2087 p->w->pending = 0;
1691 EV_CB_INVOKE (p->w, p->events); 2088 EV_CB_INVOKE (p->w, p->events);
1692 EV_FREQUENT_CHECK; 2089 EV_FREQUENT_CHECK;
1693 }
1694 } 2090 }
1695} 2091}
1696 2092
1697#if EV_IDLE_ENABLE 2093#if EV_IDLE_ENABLE
1698void inline_size 2094/* make idle watchers pending. this handles the "call-idle */
2095/* only when higher priorities are idle" logic */
2096inline_size void
1699idle_reify (EV_P) 2097idle_reify (EV_P)
1700{ 2098{
1701 if (expect_false (idleall)) 2099 if (expect_false (idleall))
1702 { 2100 {
1703 int pri; 2101 int pri;
… …
1715 } 2113 }
1716 } 2114 }
1717} 2115}
1718#endif 2116#endif
1719 2117
1720void inline_size 2118/* make timers pending */
2119inline_size void
1721timers_reify (EV_P) 2120timers_reify (EV_P)
1722{ 2121{
1723 EV_FREQUENT_CHECK; 2122 EV_FREQUENT_CHECK;
1724 2123
1725 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2124 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1726 { 2125 {
1727 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2126 do
1728
1729 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1730
1731 /* first reschedule or stop timer */
1732 if (w->repeat)
1733 { 2127 {
2128 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2129
2130 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2131
2132 /* first reschedule or stop timer */
2133 if (w->repeat)
2134 {
1734 ev_at (w) += w->repeat; 2135 ev_at (w) += w->repeat;
1735 if (ev_at (w) < mn_now) 2136 if (ev_at (w) < mn_now)
1736 ev_at (w) = mn_now; 2137 ev_at (w) = mn_now;
1737 2138
1738 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2139 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1739 2140
1740 ANHE_at_cache (timers [HEAP0]); 2141 ANHE_at_cache (timers [HEAP0]);
1741 downheap (timers, timercnt, HEAP0); 2142 downheap (timers, timercnt, HEAP0);
2143 }
2144 else
2145 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2146
2147 EV_FREQUENT_CHECK;
2148 feed_reverse (EV_A_ (W)w);
1742 } 2149 }
1743 else 2150 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1744 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1745 2151
1746 EV_FREQUENT_CHECK; 2152 feed_reverse_done (EV_A_ EV_TIMER);
1747 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1748 } 2153 }
1749} 2154}
1750 2155
1751#if EV_PERIODIC_ENABLE 2156#if EV_PERIODIC_ENABLE
1752void inline_size 2157/* make periodics pending */
2158inline_size void
1753periodics_reify (EV_P) 2159periodics_reify (EV_P)
1754{ 2160{
1755 EV_FREQUENT_CHECK; 2161 EV_FREQUENT_CHECK;
1756 2162
1757 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2163 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1758 { 2164 {
1759 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2165 int feed_count = 0;
1760 2166
1761 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2167 do
1762
1763 /* first reschedule or stop timer */
1764 if (w->reschedule_cb)
1765 { 2168 {
2169 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2170
2171 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2172
2173 /* first reschedule or stop timer */
2174 if (w->reschedule_cb)
2175 {
1766 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2176 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1767 2177
1768 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2178 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1769 2179
1770 ANHE_at_cache (periodics [HEAP0]); 2180 ANHE_at_cache (periodics [HEAP0]);
1771 downheap (periodics, periodiccnt, HEAP0); 2181 downheap (periodics, periodiccnt, HEAP0);
2182 }
2183 else if (w->interval)
2184 {
2185 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2186 /* if next trigger time is not sufficiently in the future, put it there */
2187 /* this might happen because of floating point inexactness */
2188 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2189 {
2190 ev_at (w) += w->interval;
2191
2192 /* if interval is unreasonably low we might still have a time in the past */
2193 /* so correct this. this will make the periodic very inexact, but the user */
2194 /* has effectively asked to get triggered more often than possible */
2195 if (ev_at (w) < ev_rt_now)
2196 ev_at (w) = ev_rt_now;
2197 }
2198
2199 ANHE_at_cache (periodics [HEAP0]);
2200 downheap (periodics, periodiccnt, HEAP0);
2201 }
2202 else
2203 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2204
2205 EV_FREQUENT_CHECK;
2206 feed_reverse (EV_A_ (W)w);
1772 } 2207 }
1773 else if (w->interval) 2208 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1774 {
1775 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1776 /* if next trigger time is not sufficiently in the future, put it there */
1777 /* this might happen because of floating point inexactness */
1778 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1779 {
1780 ev_at (w) += w->interval;
1781 2209
1782 /* if interval is unreasonably low we might still have a time in the past */
1783 /* so correct this. this will make the periodic very inexact, but the user */
1784 /* has effectively asked to get triggered more often than possible */
1785 if (ev_at (w) < ev_rt_now)
1786 ev_at (w) = ev_rt_now;
1787 }
1788
1789 ANHE_at_cache (periodics [HEAP0]);
1790 downheap (periodics, periodiccnt, HEAP0);
1791 }
1792 else
1793 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1794
1795 EV_FREQUENT_CHECK;
1796 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2210 feed_reverse_done (EV_A_ EV_PERIODIC);
1797 } 2211 }
1798} 2212}
1799 2213
2214/* simply recalculate all periodics */
2215/* TODO: maybe ensure that at least one event happens when jumping forward? */
1800static void noinline 2216static void noinline
1801periodics_reschedule (EV_P) 2217periodics_reschedule (EV_P)
1802{ 2218{
1803 int i; 2219 int i;
1804 2220
… …
1817 2233
1818 reheap (periodics, periodiccnt); 2234 reheap (periodics, periodiccnt);
1819} 2235}
1820#endif 2236#endif
1821 2237
1822void inline_speed 2238/* adjust all timers by a given offset */
2239static void noinline
2240timers_reschedule (EV_P_ ev_tstamp adjust)
2241{
2242 int i;
2243
2244 for (i = 0; i < timercnt; ++i)
2245 {
2246 ANHE *he = timers + i + HEAP0;
2247 ANHE_w (*he)->at += adjust;
2248 ANHE_at_cache (*he);
2249 }
2250}
2251
2252/* fetch new monotonic and realtime times from the kernel */
2253/* also detect if there was a timejump, and act accordingly */
2254inline_speed void
1823time_update (EV_P_ ev_tstamp max_block) 2255time_update (EV_P_ ev_tstamp max_block)
1824{ 2256{
1825 int i;
1826
1827#if EV_USE_MONOTONIC 2257#if EV_USE_MONOTONIC
1828 if (expect_true (have_monotonic)) 2258 if (expect_true (have_monotonic))
1829 { 2259 {
2260 int i;
1830 ev_tstamp odiff = rtmn_diff; 2261 ev_tstamp odiff = rtmn_diff;
1831 2262
1832 mn_now = get_clock (); 2263 mn_now = get_clock ();
1833 2264
1834 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2265 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1860 ev_rt_now = ev_time (); 2291 ev_rt_now = ev_time ();
1861 mn_now = get_clock (); 2292 mn_now = get_clock ();
1862 now_floor = mn_now; 2293 now_floor = mn_now;
1863 } 2294 }
1864 2295
2296 /* no timer adjustment, as the monotonic clock doesn't jump */
2297 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865# if EV_PERIODIC_ENABLE 2298# if EV_PERIODIC_ENABLE
1866 periodics_reschedule (EV_A); 2299 periodics_reschedule (EV_A);
1867# endif 2300# endif
1868 /* no timer adjustment, as the monotonic clock doesn't jump */
1869 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870 } 2301 }
1871 else 2302 else
1872#endif 2303#endif
1873 { 2304 {
1874 ev_rt_now = ev_time (); 2305 ev_rt_now = ev_time ();
1875 2306
1876 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2307 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1877 { 2308 {
2309 /* adjust timers. this is easy, as the offset is the same for all of them */
2310 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1878#if EV_PERIODIC_ENABLE 2311#if EV_PERIODIC_ENABLE
1879 periodics_reschedule (EV_A); 2312 periodics_reschedule (EV_A);
1880#endif 2313#endif
1881 /* adjust timers. this is easy, as the offset is the same for all of them */
1882 for (i = 0; i < timercnt; ++i)
1883 {
1884 ANHE *he = timers + i + HEAP0;
1885 ANHE_w (*he)->at += ev_rt_now - mn_now;
1886 ANHE_at_cache (*he);
1887 }
1888 } 2314 }
1889 2315
1890 mn_now = ev_rt_now; 2316 mn_now = ev_rt_now;
1891 } 2317 }
1892} 2318}
1893 2319
1894void 2320void
1895ev_ref (EV_P)
1896{
1897 ++activecnt;
1898}
1899
1900void
1901ev_unref (EV_P)
1902{
1903 --activecnt;
1904}
1905
1906void
1907ev_now_update (EV_P)
1908{
1909 time_update (EV_A_ 1e100);
1910}
1911
1912static int loop_done;
1913
1914void
1915ev_loop (EV_P_ int flags) 2321ev_run (EV_P_ int flags)
1916{ 2322{
2323#if EV_FEATURE_API
2324 ++loop_depth;
2325#endif
2326
2327 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2328
1917 loop_done = EVUNLOOP_CANCEL; 2329 loop_done = EVBREAK_CANCEL;
1918 2330
1919 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2331 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1920 2332
1921 do 2333 do
1922 { 2334 {
1923#if EV_VERIFY >= 2 2335#if EV_VERIFY >= 2
1924 ev_loop_verify (EV_A); 2336 ev_verify (EV_A);
1925#endif 2337#endif
1926 2338
1927#ifndef _WIN32 2339#ifndef _WIN32
1928 if (expect_false (curpid)) /* penalise the forking check even more */ 2340 if (expect_false (curpid)) /* penalise the forking check even more */
1929 if (expect_false (getpid () != curpid)) 2341 if (expect_false (getpid () != curpid))
… …
1937 /* we might have forked, so queue fork handlers */ 2349 /* we might have forked, so queue fork handlers */
1938 if (expect_false (postfork)) 2350 if (expect_false (postfork))
1939 if (forkcnt) 2351 if (forkcnt)
1940 { 2352 {
1941 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2353 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1942 call_pending (EV_A); 2354 EV_INVOKE_PENDING;
1943 } 2355 }
1944#endif 2356#endif
1945 2357
2358#if EV_PREPARE_ENABLE
1946 /* queue prepare watchers (and execute them) */ 2359 /* queue prepare watchers (and execute them) */
1947 if (expect_false (preparecnt)) 2360 if (expect_false (preparecnt))
1948 { 2361 {
1949 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2362 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1950 call_pending (EV_A); 2363 EV_INVOKE_PENDING;
1951 } 2364 }
2365#endif
1952 2366
1953 if (expect_false (!activecnt)) 2367 if (expect_false (loop_done))
1954 break; 2368 break;
1955 2369
1956 /* we might have forked, so reify kernel state if necessary */ 2370 /* we might have forked, so reify kernel state if necessary */
1957 if (expect_false (postfork)) 2371 if (expect_false (postfork))
1958 loop_fork (EV_A); 2372 loop_fork (EV_A);
… …
1963 /* calculate blocking time */ 2377 /* calculate blocking time */
1964 { 2378 {
1965 ev_tstamp waittime = 0.; 2379 ev_tstamp waittime = 0.;
1966 ev_tstamp sleeptime = 0.; 2380 ev_tstamp sleeptime = 0.;
1967 2381
2382 /* remember old timestamp for io_blocktime calculation */
2383 ev_tstamp prev_mn_now = mn_now;
2384
2385 /* update time to cancel out callback processing overhead */
2386 time_update (EV_A_ 1e100);
2387
1968 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2388 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1969 { 2389 {
1970 /* update time to cancel out callback processing overhead */
1971 time_update (EV_A_ 1e100);
1972
1973 waittime = MAX_BLOCKTIME; 2390 waittime = MAX_BLOCKTIME;
1974 2391
1975 if (timercnt) 2392 if (timercnt)
1976 { 2393 {
1977 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2394 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1984 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2401 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1985 if (waittime > to) waittime = to; 2402 if (waittime > to) waittime = to;
1986 } 2403 }
1987#endif 2404#endif
1988 2405
2406 /* don't let timeouts decrease the waittime below timeout_blocktime */
1989 if (expect_false (waittime < timeout_blocktime)) 2407 if (expect_false (waittime < timeout_blocktime))
1990 waittime = timeout_blocktime; 2408 waittime = timeout_blocktime;
1991 2409
1992 sleeptime = waittime - backend_fudge; 2410 /* extra check because io_blocktime is commonly 0 */
1993
1994 if (expect_true (sleeptime > io_blocktime)) 2411 if (expect_false (io_blocktime))
1995 sleeptime = io_blocktime;
1996
1997 if (sleeptime)
1998 { 2412 {
2413 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2414
2415 if (sleeptime > waittime - backend_fudge)
2416 sleeptime = waittime - backend_fudge;
2417
2418 if (expect_true (sleeptime > 0.))
2419 {
1999 ev_sleep (sleeptime); 2420 ev_sleep (sleeptime);
2000 waittime -= sleeptime; 2421 waittime -= sleeptime;
2422 }
2001 } 2423 }
2002 } 2424 }
2003 2425
2426#if EV_FEATURE_API
2004 ++loop_count; 2427 ++loop_count;
2428#endif
2429 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2005 backend_poll (EV_A_ waittime); 2430 backend_poll (EV_A_ waittime);
2431 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2006 2432
2007 /* update ev_rt_now, do magic */ 2433 /* update ev_rt_now, do magic */
2008 time_update (EV_A_ waittime + sleeptime); 2434 time_update (EV_A_ waittime + sleeptime);
2009 } 2435 }
2010 2436
… …
2017#if EV_IDLE_ENABLE 2443#if EV_IDLE_ENABLE
2018 /* queue idle watchers unless other events are pending */ 2444 /* queue idle watchers unless other events are pending */
2019 idle_reify (EV_A); 2445 idle_reify (EV_A);
2020#endif 2446#endif
2021 2447
2448#if EV_CHECK_ENABLE
2022 /* queue check watchers, to be executed first */ 2449 /* queue check watchers, to be executed first */
2023 if (expect_false (checkcnt)) 2450 if (expect_false (checkcnt))
2024 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2451 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2452#endif
2025 2453
2026 call_pending (EV_A); 2454 EV_INVOKE_PENDING;
2027 } 2455 }
2028 while (expect_true ( 2456 while (expect_true (
2029 activecnt 2457 activecnt
2030 && !loop_done 2458 && !loop_done
2031 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2459 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2032 )); 2460 ));
2033 2461
2034 if (loop_done == EVUNLOOP_ONE) 2462 if (loop_done == EVBREAK_ONE)
2035 loop_done = EVUNLOOP_CANCEL; 2463 loop_done = EVBREAK_CANCEL;
2464
2465#if EV_FEATURE_API
2466 --loop_depth;
2467#endif
2036} 2468}
2037 2469
2038void 2470void
2039ev_unloop (EV_P_ int how) 2471ev_break (EV_P_ int how)
2040{ 2472{
2041 loop_done = how; 2473 loop_done = how;
2042} 2474}
2043 2475
2476void
2477ev_ref (EV_P)
2478{
2479 ++activecnt;
2480}
2481
2482void
2483ev_unref (EV_P)
2484{
2485 --activecnt;
2486}
2487
2488void
2489ev_now_update (EV_P)
2490{
2491 time_update (EV_A_ 1e100);
2492}
2493
2494void
2495ev_suspend (EV_P)
2496{
2497 ev_now_update (EV_A);
2498}
2499
2500void
2501ev_resume (EV_P)
2502{
2503 ev_tstamp mn_prev = mn_now;
2504
2505 ev_now_update (EV_A);
2506 timers_reschedule (EV_A_ mn_now - mn_prev);
2507#if EV_PERIODIC_ENABLE
2508 /* TODO: really do this? */
2509 periodics_reschedule (EV_A);
2510#endif
2511}
2512
2044/*****************************************************************************/ 2513/*****************************************************************************/
2514/* singly-linked list management, used when the expected list length is short */
2045 2515
2046void inline_size 2516inline_size void
2047wlist_add (WL *head, WL elem) 2517wlist_add (WL *head, WL elem)
2048{ 2518{
2049 elem->next = *head; 2519 elem->next = *head;
2050 *head = elem; 2520 *head = elem;
2051} 2521}
2052 2522
2053void inline_size 2523inline_size void
2054wlist_del (WL *head, WL elem) 2524wlist_del (WL *head, WL elem)
2055{ 2525{
2056 while (*head) 2526 while (*head)
2057 { 2527 {
2058 if (*head == elem) 2528 if (expect_true (*head == elem))
2059 { 2529 {
2060 *head = elem->next; 2530 *head = elem->next;
2061 return; 2531 break;
2062 } 2532 }
2063 2533
2064 head = &(*head)->next; 2534 head = &(*head)->next;
2065 } 2535 }
2066} 2536}
2067 2537
2068void inline_speed 2538/* internal, faster, version of ev_clear_pending */
2539inline_speed void
2069clear_pending (EV_P_ W w) 2540clear_pending (EV_P_ W w)
2070{ 2541{
2071 if (w->pending) 2542 if (w->pending)
2072 { 2543 {
2073 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2544 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2074 w->pending = 0; 2545 w->pending = 0;
2075 } 2546 }
2076} 2547}
2077 2548
2078int 2549int
… …
2082 int pending = w_->pending; 2553 int pending = w_->pending;
2083 2554
2084 if (expect_true (pending)) 2555 if (expect_true (pending))
2085 { 2556 {
2086 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2557 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2558 p->w = (W)&pending_w;
2087 w_->pending = 0; 2559 w_->pending = 0;
2088 p->w = 0;
2089 return p->events; 2560 return p->events;
2090 } 2561 }
2091 else 2562 else
2092 return 0; 2563 return 0;
2093} 2564}
2094 2565
2095void inline_size 2566inline_size void
2096pri_adjust (EV_P_ W w) 2567pri_adjust (EV_P_ W w)
2097{ 2568{
2098 int pri = w->priority; 2569 int pri = ev_priority (w);
2099 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2570 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2100 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2571 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2101 w->priority = pri; 2572 ev_set_priority (w, pri);
2102} 2573}
2103 2574
2104void inline_speed 2575inline_speed void
2105ev_start (EV_P_ W w, int active) 2576ev_start (EV_P_ W w, int active)
2106{ 2577{
2107 pri_adjust (EV_A_ w); 2578 pri_adjust (EV_A_ w);
2108 w->active = active; 2579 w->active = active;
2109 ev_ref (EV_A); 2580 ev_ref (EV_A);
2110} 2581}
2111 2582
2112void inline_size 2583inline_size void
2113ev_stop (EV_P_ W w) 2584ev_stop (EV_P_ W w)
2114{ 2585{
2115 ev_unref (EV_A); 2586 ev_unref (EV_A);
2116 w->active = 0; 2587 w->active = 0;
2117} 2588}
… …
2124 int fd = w->fd; 2595 int fd = w->fd;
2125 2596
2126 if (expect_false (ev_is_active (w))) 2597 if (expect_false (ev_is_active (w)))
2127 return; 2598 return;
2128 2599
2129 assert (("ev_io_start called with negative fd", fd >= 0)); 2600 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2130 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2601 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2131 2602
2132 EV_FREQUENT_CHECK; 2603 EV_FREQUENT_CHECK;
2133 2604
2134 ev_start (EV_A_ (W)w, 1); 2605 ev_start (EV_A_ (W)w, 1);
2135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2606 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2136 wlist_add (&anfds[fd].head, (WL)w); 2607 wlist_add (&anfds[fd].head, (WL)w);
2137 2608
2138 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2609 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2139 w->events &= ~EV_IOFDSET; 2610 w->events &= ~EV__IOFDSET;
2140 2611
2141 EV_FREQUENT_CHECK; 2612 EV_FREQUENT_CHECK;
2142} 2613}
2143 2614
2144void noinline 2615void noinline
… …
2146{ 2617{
2147 clear_pending (EV_A_ (W)w); 2618 clear_pending (EV_A_ (W)w);
2148 if (expect_false (!ev_is_active (w))) 2619 if (expect_false (!ev_is_active (w)))
2149 return; 2620 return;
2150 2621
2151 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2622 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2152 2623
2153 EV_FREQUENT_CHECK; 2624 EV_FREQUENT_CHECK;
2154 2625
2155 wlist_del (&anfds[w->fd].head, (WL)w); 2626 wlist_del (&anfds[w->fd].head, (WL)w);
2156 ev_stop (EV_A_ (W)w); 2627 ev_stop (EV_A_ (W)w);
2157 2628
2158 fd_change (EV_A_ w->fd, 1); 2629 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2159 2630
2160 EV_FREQUENT_CHECK; 2631 EV_FREQUENT_CHECK;
2161} 2632}
2162 2633
2163void noinline 2634void noinline
… …
2166 if (expect_false (ev_is_active (w))) 2637 if (expect_false (ev_is_active (w)))
2167 return; 2638 return;
2168 2639
2169 ev_at (w) += mn_now; 2640 ev_at (w) += mn_now;
2170 2641
2171 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2642 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2172 2643
2173 EV_FREQUENT_CHECK; 2644 EV_FREQUENT_CHECK;
2174 2645
2175 ++timercnt; 2646 ++timercnt;
2176 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2647 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2179 ANHE_at_cache (timers [ev_active (w)]); 2650 ANHE_at_cache (timers [ev_active (w)]);
2180 upheap (timers, ev_active (w)); 2651 upheap (timers, ev_active (w));
2181 2652
2182 EV_FREQUENT_CHECK; 2653 EV_FREQUENT_CHECK;
2183 2654
2184 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2655 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2185} 2656}
2186 2657
2187void noinline 2658void noinline
2188ev_timer_stop (EV_P_ ev_timer *w) 2659ev_timer_stop (EV_P_ ev_timer *w)
2189{ 2660{
… …
2194 EV_FREQUENT_CHECK; 2665 EV_FREQUENT_CHECK;
2195 2666
2196 { 2667 {
2197 int active = ev_active (w); 2668 int active = ev_active (w);
2198 2669
2199 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2670 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2200 2671
2201 --timercnt; 2672 --timercnt;
2202 2673
2203 if (expect_true (active < timercnt + HEAP0)) 2674 if (expect_true (active < timercnt + HEAP0))
2204 { 2675 {
2205 timers [active] = timers [timercnt + HEAP0]; 2676 timers [active] = timers [timercnt + HEAP0];
2206 adjustheap (timers, timercnt, active); 2677 adjustheap (timers, timercnt, active);
2207 } 2678 }
2208 } 2679 }
2209 2680
2210 EV_FREQUENT_CHECK;
2211
2212 ev_at (w) -= mn_now; 2681 ev_at (w) -= mn_now;
2213 2682
2214 ev_stop (EV_A_ (W)w); 2683 ev_stop (EV_A_ (W)w);
2684
2685 EV_FREQUENT_CHECK;
2215} 2686}
2216 2687
2217void noinline 2688void noinline
2218ev_timer_again (EV_P_ ev_timer *w) 2689ev_timer_again (EV_P_ ev_timer *w)
2219{ 2690{
… …
2237 } 2708 }
2238 2709
2239 EV_FREQUENT_CHECK; 2710 EV_FREQUENT_CHECK;
2240} 2711}
2241 2712
2713ev_tstamp
2714ev_timer_remaining (EV_P_ ev_timer *w)
2715{
2716 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2717}
2718
2242#if EV_PERIODIC_ENABLE 2719#if EV_PERIODIC_ENABLE
2243void noinline 2720void noinline
2244ev_periodic_start (EV_P_ ev_periodic *w) 2721ev_periodic_start (EV_P_ ev_periodic *w)
2245{ 2722{
2246 if (expect_false (ev_is_active (w))) 2723 if (expect_false (ev_is_active (w)))
… …
2248 2725
2249 if (w->reschedule_cb) 2726 if (w->reschedule_cb)
2250 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2727 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251 else if (w->interval) 2728 else if (w->interval)
2252 { 2729 {
2253 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2730 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2254 /* this formula differs from the one in periodic_reify because we do not always round up */ 2731 /* this formula differs from the one in periodic_reify because we do not always round up */
2255 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2732 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2256 } 2733 }
2257 else 2734 else
2258 ev_at (w) = w->offset; 2735 ev_at (w) = w->offset;
… …
2266 ANHE_at_cache (periodics [ev_active (w)]); 2743 ANHE_at_cache (periodics [ev_active (w)]);
2267 upheap (periodics, ev_active (w)); 2744 upheap (periodics, ev_active (w));
2268 2745
2269 EV_FREQUENT_CHECK; 2746 EV_FREQUENT_CHECK;
2270 2747
2271 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2748 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2272} 2749}
2273 2750
2274void noinline 2751void noinline
2275ev_periodic_stop (EV_P_ ev_periodic *w) 2752ev_periodic_stop (EV_P_ ev_periodic *w)
2276{ 2753{
… …
2281 EV_FREQUENT_CHECK; 2758 EV_FREQUENT_CHECK;
2282 2759
2283 { 2760 {
2284 int active = ev_active (w); 2761 int active = ev_active (w);
2285 2762
2286 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2763 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2287 2764
2288 --periodiccnt; 2765 --periodiccnt;
2289 2766
2290 if (expect_true (active < periodiccnt + HEAP0)) 2767 if (expect_true (active < periodiccnt + HEAP0))
2291 { 2768 {
2292 periodics [active] = periodics [periodiccnt + HEAP0]; 2769 periodics [active] = periodics [periodiccnt + HEAP0];
2293 adjustheap (periodics, periodiccnt, active); 2770 adjustheap (periodics, periodiccnt, active);
2294 } 2771 }
2295 } 2772 }
2296 2773
2297 EV_FREQUENT_CHECK;
2298
2299 ev_stop (EV_A_ (W)w); 2774 ev_stop (EV_A_ (W)w);
2775
2776 EV_FREQUENT_CHECK;
2300} 2777}
2301 2778
2302void noinline 2779void noinline
2303ev_periodic_again (EV_P_ ev_periodic *w) 2780ev_periodic_again (EV_P_ ev_periodic *w)
2304{ 2781{
… …
2310 2787
2311#ifndef SA_RESTART 2788#ifndef SA_RESTART
2312# define SA_RESTART 0 2789# define SA_RESTART 0
2313#endif 2790#endif
2314 2791
2792#if EV_SIGNAL_ENABLE
2793
2315void noinline 2794void noinline
2316ev_signal_start (EV_P_ ev_signal *w) 2795ev_signal_start (EV_P_ ev_signal *w)
2317{ 2796{
2318#if EV_MULTIPLICITY
2319 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2320#endif
2321 if (expect_false (ev_is_active (w))) 2797 if (expect_false (ev_is_active (w)))
2322 return; 2798 return;
2323 2799
2324 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2800 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2325 2801
2326 evpipe_init (EV_A); 2802#if EV_MULTIPLICITY
2803 assert (("libev: a signal must not be attached to two different loops",
2804 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2327 2805
2328 EV_FREQUENT_CHECK; 2806 signals [w->signum - 1].loop = EV_A;
2807#endif
2329 2808
2809 EV_FREQUENT_CHECK;
2810
2811#if EV_USE_SIGNALFD
2812 if (sigfd == -2)
2330 { 2813 {
2331#ifndef _WIN32 2814 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2332 sigset_t full, prev; 2815 if (sigfd < 0 && errno == EINVAL)
2333 sigfillset (&full); 2816 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2334 sigprocmask (SIG_SETMASK, &full, &prev);
2335#endif
2336 2817
2337 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2818 if (sigfd >= 0)
2819 {
2820 fd_intern (sigfd); /* doing it twice will not hurt */
2338 2821
2339#ifndef _WIN32 2822 sigemptyset (&sigfd_set);
2340 sigprocmask (SIG_SETMASK, &prev, 0); 2823
2341#endif 2824 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2825 ev_set_priority (&sigfd_w, EV_MAXPRI);
2826 ev_io_start (EV_A_ &sigfd_w);
2827 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2828 }
2342 } 2829 }
2830
2831 if (sigfd >= 0)
2832 {
2833 /* TODO: check .head */
2834 sigaddset (&sigfd_set, w->signum);
2835 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2836
2837 signalfd (sigfd, &sigfd_set, 0);
2838 }
2839#endif
2343 2840
2344 ev_start (EV_A_ (W)w, 1); 2841 ev_start (EV_A_ (W)w, 1);
2345 wlist_add (&signals [w->signum - 1].head, (WL)w); 2842 wlist_add (&signals [w->signum - 1].head, (WL)w);
2346 2843
2347 if (!((WL)w)->next) 2844 if (!((WL)w)->next)
2845# if EV_USE_SIGNALFD
2846 if (sigfd < 0) /*TODO*/
2847# endif
2348 { 2848 {
2349#if _WIN32 2849# ifdef _WIN32
2850 evpipe_init (EV_A);
2851
2350 signal (w->signum, ev_sighandler); 2852 signal (w->signum, ev_sighandler);
2351#else 2853# else
2352 struct sigaction sa; 2854 struct sigaction sa;
2855
2856 evpipe_init (EV_A);
2857
2353 sa.sa_handler = ev_sighandler; 2858 sa.sa_handler = ev_sighandler;
2354 sigfillset (&sa.sa_mask); 2859 sigfillset (&sa.sa_mask);
2355 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2860 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2356 sigaction (w->signum, &sa, 0); 2861 sigaction (w->signum, &sa, 0);
2862
2863 sigemptyset (&sa.sa_mask);
2864 sigaddset (&sa.sa_mask, w->signum);
2865 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2357#endif 2866#endif
2358 } 2867 }
2359 2868
2360 EV_FREQUENT_CHECK; 2869 EV_FREQUENT_CHECK;
2361} 2870}
2362 2871
2363void noinline 2872void noinline
… …
2371 2880
2372 wlist_del (&signals [w->signum - 1].head, (WL)w); 2881 wlist_del (&signals [w->signum - 1].head, (WL)w);
2373 ev_stop (EV_A_ (W)w); 2882 ev_stop (EV_A_ (W)w);
2374 2883
2375 if (!signals [w->signum - 1].head) 2884 if (!signals [w->signum - 1].head)
2885 {
2886#if EV_MULTIPLICITY
2887 signals [w->signum - 1].loop = 0; /* unattach from signal */
2888#endif
2889#if EV_USE_SIGNALFD
2890 if (sigfd >= 0)
2891 {
2892 sigset_t ss;
2893
2894 sigemptyset (&ss);
2895 sigaddset (&ss, w->signum);
2896 sigdelset (&sigfd_set, w->signum);
2897
2898 signalfd (sigfd, &sigfd_set, 0);
2899 sigprocmask (SIG_UNBLOCK, &ss, 0);
2900 }
2901 else
2902#endif
2376 signal (w->signum, SIG_DFL); 2903 signal (w->signum, SIG_DFL);
2904 }
2377 2905
2378 EV_FREQUENT_CHECK; 2906 EV_FREQUENT_CHECK;
2379} 2907}
2908
2909#endif
2910
2911#if EV_CHILD_ENABLE
2380 2912
2381void 2913void
2382ev_child_start (EV_P_ ev_child *w) 2914ev_child_start (EV_P_ ev_child *w)
2383{ 2915{
2384#if EV_MULTIPLICITY 2916#if EV_MULTIPLICITY
2385 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2917 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2386#endif 2918#endif
2387 if (expect_false (ev_is_active (w))) 2919 if (expect_false (ev_is_active (w)))
2388 return; 2920 return;
2389 2921
2390 EV_FREQUENT_CHECK; 2922 EV_FREQUENT_CHECK;
2391 2923
2392 ev_start (EV_A_ (W)w, 1); 2924 ev_start (EV_A_ (W)w, 1);
2393 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2925 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2394 2926
2395 EV_FREQUENT_CHECK; 2927 EV_FREQUENT_CHECK;
2396} 2928}
2397 2929
2398void 2930void
… …
2402 if (expect_false (!ev_is_active (w))) 2934 if (expect_false (!ev_is_active (w)))
2403 return; 2935 return;
2404 2936
2405 EV_FREQUENT_CHECK; 2937 EV_FREQUENT_CHECK;
2406 2938
2407 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2939 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2408 ev_stop (EV_A_ (W)w); 2940 ev_stop (EV_A_ (W)w);
2409 2941
2410 EV_FREQUENT_CHECK; 2942 EV_FREQUENT_CHECK;
2411} 2943}
2944
2945#endif
2412 2946
2413#if EV_STAT_ENABLE 2947#if EV_STAT_ENABLE
2414 2948
2415# ifdef _WIN32 2949# ifdef _WIN32
2416# undef lstat 2950# undef lstat
… …
2422#define MIN_STAT_INTERVAL 0.1074891 2956#define MIN_STAT_INTERVAL 0.1074891
2423 2957
2424static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2958static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2425 2959
2426#if EV_USE_INOTIFY 2960#if EV_USE_INOTIFY
2427# define EV_INOTIFY_BUFSIZE 8192 2961
2962/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2963# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2428 2964
2429static void noinline 2965static void noinline
2430infy_add (EV_P_ ev_stat *w) 2966infy_add (EV_P_ ev_stat *w)
2431{ 2967{
2432 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2968 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2433 2969
2434 if (w->wd < 0) 2970 if (w->wd >= 0)
2971 {
2972 struct statfs sfs;
2973
2974 /* now local changes will be tracked by inotify, but remote changes won't */
2975 /* unless the filesystem is known to be local, we therefore still poll */
2976 /* also do poll on <2.6.25, but with normal frequency */
2977
2978 if (!fs_2625)
2979 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2980 else if (!statfs (w->path, &sfs)
2981 && (sfs.f_type == 0x1373 /* devfs */
2982 || sfs.f_type == 0xEF53 /* ext2/3 */
2983 || sfs.f_type == 0x3153464a /* jfs */
2984 || sfs.f_type == 0x52654973 /* reiser3 */
2985 || sfs.f_type == 0x01021994 /* tempfs */
2986 || sfs.f_type == 0x58465342 /* xfs */))
2987 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2988 else
2989 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2435 { 2990 }
2991 else
2992 {
2993 /* can't use inotify, continue to stat */
2436 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 2994 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2437 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2438 2995
2439 /* monitor some parent directory for speedup hints */ 2996 /* if path is not there, monitor some parent directory for speedup hints */
2440 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 2997 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2441 /* but an efficiency issue only */ 2998 /* but an efficiency issue only */
2442 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2999 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2443 { 3000 {
2444 char path [4096]; 3001 char path [4096];
… …
2449 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3006 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2450 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3007 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2451 3008
2452 char *pend = strrchr (path, '/'); 3009 char *pend = strrchr (path, '/');
2453 3010
2454 if (!pend) 3011 if (!pend || pend == path)
2455 break; /* whoops, no '/', complain to your admin */ 3012 break;
2456 3013
2457 *pend = 0; 3014 *pend = 0;
2458 w->wd = inotify_add_watch (fs_fd, path, mask); 3015 w->wd = inotify_add_watch (fs_fd, path, mask);
2459 } 3016 }
2460 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3017 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2461 } 3018 }
2462 } 3019 }
2463 else 3020
2464 { 3021 if (w->wd >= 0)
2465 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3022 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2466 3023
2467 /* now local changes will be tracked by inotify, but remote changes won't */ 3024 /* now re-arm timer, if required */
2468 /* unless the filesystem it known to be local, we therefore still poll */ 3025 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2469 /* also do poll on <2.6.25, but with normal frequency */
2470 struct statfs sfs;
2471
2472 if (fs_2625 && !statfs (w->path, &sfs))
2473 if (sfs.f_type == 0x1373 /* devfs */
2474 || sfs.f_type == 0xEF53 /* ext2/3 */
2475 || sfs.f_type == 0x3153464a /* jfs */
2476 || sfs.f_type == 0x52654973 /* reiser3 */
2477 || sfs.f_type == 0x01021994 /* tempfs */
2478 || sfs.f_type == 0x58465342 /* xfs */)
2479 return;
2480
2481 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2482 ev_timer_again (EV_A_ &w->timer); 3026 ev_timer_again (EV_A_ &w->timer);
2483 } 3027 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2484} 3028}
2485 3029
2486static void noinline 3030static void noinline
2487infy_del (EV_P_ ev_stat *w) 3031infy_del (EV_P_ ev_stat *w)
2488{ 3032{
… …
2491 3035
2492 if (wd < 0) 3036 if (wd < 0)
2493 return; 3037 return;
2494 3038
2495 w->wd = -2; 3039 w->wd = -2;
2496 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3040 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2497 wlist_del (&fs_hash [slot].head, (WL)w); 3041 wlist_del (&fs_hash [slot].head, (WL)w);
2498 3042
2499 /* remove this watcher, if others are watching it, they will rearm */ 3043 /* remove this watcher, if others are watching it, they will rearm */
2500 inotify_rm_watch (fs_fd, wd); 3044 inotify_rm_watch (fs_fd, wd);
2501} 3045}
… …
2503static void noinline 3047static void noinline
2504infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3048infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2505{ 3049{
2506 if (slot < 0) 3050 if (slot < 0)
2507 /* overflow, need to check for all hash slots */ 3051 /* overflow, need to check for all hash slots */
2508 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3052 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2509 infy_wd (EV_A_ slot, wd, ev); 3053 infy_wd (EV_A_ slot, wd, ev);
2510 else 3054 else
2511 { 3055 {
2512 WL w_; 3056 WL w_;
2513 3057
2514 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3058 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2515 { 3059 {
2516 ev_stat *w = (ev_stat *)w_; 3060 ev_stat *w = (ev_stat *)w_;
2517 w_ = w_->next; /* lets us remove this watcher and all before it */ 3061 w_ = w_->next; /* lets us remove this watcher and all before it */
2518 3062
2519 if (w->wd == wd || wd == -1) 3063 if (w->wd == wd || wd == -1)
2520 { 3064 {
2521 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3065 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2522 { 3066 {
3067 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2523 w->wd = -1; 3068 w->wd = -1;
2524 infy_add (EV_A_ w); /* re-add, no matter what */ 3069 infy_add (EV_A_ w); /* re-add, no matter what */
2525 } 3070 }
2526 3071
2527 stat_timer_cb (EV_A_ &w->timer, 0); 3072 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2532 3077
2533static void 3078static void
2534infy_cb (EV_P_ ev_io *w, int revents) 3079infy_cb (EV_P_ ev_io *w, int revents)
2535{ 3080{
2536 char buf [EV_INOTIFY_BUFSIZE]; 3081 char buf [EV_INOTIFY_BUFSIZE];
2537 struct inotify_event *ev = (struct inotify_event *)buf;
2538 int ofs; 3082 int ofs;
2539 int len = read (fs_fd, buf, sizeof (buf)); 3083 int len = read (fs_fd, buf, sizeof (buf));
2540 3084
2541 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3085 for (ofs = 0; ofs < len; )
3086 {
3087 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2542 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3088 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3089 ofs += sizeof (struct inotify_event) + ev->len;
3090 }
2543} 3091}
2544 3092
2545void inline_size 3093inline_size void
2546check_2625 (EV_P) 3094ev_check_2625 (EV_P)
2547{ 3095{
2548 /* kernels < 2.6.25 are borked 3096 /* kernels < 2.6.25 are borked
2549 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3097 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2550 */ 3098 */
2551 struct utsname buf; 3099 if (ev_linux_version () < 0x020619)
2552 int major, minor, micro;
2553
2554 if (uname (&buf))
2555 return; 3100 return;
2556 3101
2557 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2558 return;
2559
2560 if (major < 2
2561 || (major == 2 && minor < 6)
2562 || (major == 2 && minor == 6 && micro < 25))
2563 return;
2564
2565 fs_2625 = 1; 3102 fs_2625 = 1;
2566} 3103}
2567 3104
2568void inline_size 3105inline_size int
3106infy_newfd (void)
3107{
3108#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3109 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3110 if (fd >= 0)
3111 return fd;
3112#endif
3113 return inotify_init ();
3114}
3115
3116inline_size void
2569infy_init (EV_P) 3117infy_init (EV_P)
2570{ 3118{
2571 if (fs_fd != -2) 3119 if (fs_fd != -2)
2572 return; 3120 return;
2573 3121
2574 fs_fd = -1; 3122 fs_fd = -1;
2575 3123
2576 check_2625 (EV_A); 3124 ev_check_2625 (EV_A);
2577 3125
2578 fs_fd = inotify_init (); 3126 fs_fd = infy_newfd ();
2579 3127
2580 if (fs_fd >= 0) 3128 if (fs_fd >= 0)
2581 { 3129 {
3130 fd_intern (fs_fd);
2582 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3131 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2583 ev_set_priority (&fs_w, EV_MAXPRI); 3132 ev_set_priority (&fs_w, EV_MAXPRI);
2584 ev_io_start (EV_A_ &fs_w); 3133 ev_io_start (EV_A_ &fs_w);
3134 ev_unref (EV_A);
2585 } 3135 }
2586} 3136}
2587 3137
2588void inline_size 3138inline_size void
2589infy_fork (EV_P) 3139infy_fork (EV_P)
2590{ 3140{
2591 int slot; 3141 int slot;
2592 3142
2593 if (fs_fd < 0) 3143 if (fs_fd < 0)
2594 return; 3144 return;
2595 3145
3146 ev_ref (EV_A);
3147 ev_io_stop (EV_A_ &fs_w);
2596 close (fs_fd); 3148 close (fs_fd);
2597 fs_fd = inotify_init (); 3149 fs_fd = infy_newfd ();
2598 3150
3151 if (fs_fd >= 0)
3152 {
3153 fd_intern (fs_fd);
3154 ev_io_set (&fs_w, fs_fd, EV_READ);
3155 ev_io_start (EV_A_ &fs_w);
3156 ev_unref (EV_A);
3157 }
3158
2599 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3159 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2600 { 3160 {
2601 WL w_ = fs_hash [slot].head; 3161 WL w_ = fs_hash [slot].head;
2602 fs_hash [slot].head = 0; 3162 fs_hash [slot].head = 0;
2603 3163
2604 while (w_) 3164 while (w_)
… …
2609 w->wd = -1; 3169 w->wd = -1;
2610 3170
2611 if (fs_fd >= 0) 3171 if (fs_fd >= 0)
2612 infy_add (EV_A_ w); /* re-add, no matter what */ 3172 infy_add (EV_A_ w); /* re-add, no matter what */
2613 else 3173 else
3174 {
3175 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3176 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2614 ev_timer_again (EV_A_ &w->timer); 3177 ev_timer_again (EV_A_ &w->timer);
3178 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3179 }
2615 } 3180 }
2616 } 3181 }
2617} 3182}
2618 3183
2619#endif 3184#endif
… …
2636static void noinline 3201static void noinline
2637stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3202stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2638{ 3203{
2639 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3204 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2640 3205
2641 /* we copy this here each the time so that */ 3206 ev_statdata prev = w->attr;
2642 /* prev has the old value when the callback gets invoked */
2643 w->prev = w->attr;
2644 ev_stat_stat (EV_A_ w); 3207 ev_stat_stat (EV_A_ w);
2645 3208
2646 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3209 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2647 if ( 3210 if (
2648 w->prev.st_dev != w->attr.st_dev 3211 prev.st_dev != w->attr.st_dev
2649 || w->prev.st_ino != w->attr.st_ino 3212 || prev.st_ino != w->attr.st_ino
2650 || w->prev.st_mode != w->attr.st_mode 3213 || prev.st_mode != w->attr.st_mode
2651 || w->prev.st_nlink != w->attr.st_nlink 3214 || prev.st_nlink != w->attr.st_nlink
2652 || w->prev.st_uid != w->attr.st_uid 3215 || prev.st_uid != w->attr.st_uid
2653 || w->prev.st_gid != w->attr.st_gid 3216 || prev.st_gid != w->attr.st_gid
2654 || w->prev.st_rdev != w->attr.st_rdev 3217 || prev.st_rdev != w->attr.st_rdev
2655 || w->prev.st_size != w->attr.st_size 3218 || prev.st_size != w->attr.st_size
2656 || w->prev.st_atime != w->attr.st_atime 3219 || prev.st_atime != w->attr.st_atime
2657 || w->prev.st_mtime != w->attr.st_mtime 3220 || prev.st_mtime != w->attr.st_mtime
2658 || w->prev.st_ctime != w->attr.st_ctime 3221 || prev.st_ctime != w->attr.st_ctime
2659 ) { 3222 ) {
3223 /* we only update w->prev on actual differences */
3224 /* in case we test more often than invoke the callback, */
3225 /* to ensure that prev is always different to attr */
3226 w->prev = prev;
3227
2660 #if EV_USE_INOTIFY 3228 #if EV_USE_INOTIFY
2661 if (fs_fd >= 0) 3229 if (fs_fd >= 0)
2662 { 3230 {
2663 infy_del (EV_A_ w); 3231 infy_del (EV_A_ w);
2664 infy_add (EV_A_ w); 3232 infy_add (EV_A_ w);
… …
2689 3257
2690 if (fs_fd >= 0) 3258 if (fs_fd >= 0)
2691 infy_add (EV_A_ w); 3259 infy_add (EV_A_ w);
2692 else 3260 else
2693#endif 3261#endif
3262 {
2694 ev_timer_again (EV_A_ &w->timer); 3263 ev_timer_again (EV_A_ &w->timer);
3264 ev_unref (EV_A);
3265 }
2695 3266
2696 ev_start (EV_A_ (W)w, 1); 3267 ev_start (EV_A_ (W)w, 1);
2697 3268
2698 EV_FREQUENT_CHECK; 3269 EV_FREQUENT_CHECK;
2699} 3270}
… …
2708 EV_FREQUENT_CHECK; 3279 EV_FREQUENT_CHECK;
2709 3280
2710#if EV_USE_INOTIFY 3281#if EV_USE_INOTIFY
2711 infy_del (EV_A_ w); 3282 infy_del (EV_A_ w);
2712#endif 3283#endif
3284
3285 if (ev_is_active (&w->timer))
3286 {
3287 ev_ref (EV_A);
2713 ev_timer_stop (EV_A_ &w->timer); 3288 ev_timer_stop (EV_A_ &w->timer);
3289 }
2714 3290
2715 ev_stop (EV_A_ (W)w); 3291 ev_stop (EV_A_ (W)w);
2716 3292
2717 EV_FREQUENT_CHECK; 3293 EV_FREQUENT_CHECK;
2718} 3294}
… …
2763 3339
2764 EV_FREQUENT_CHECK; 3340 EV_FREQUENT_CHECK;
2765} 3341}
2766#endif 3342#endif
2767 3343
3344#if EV_PREPARE_ENABLE
2768void 3345void
2769ev_prepare_start (EV_P_ ev_prepare *w) 3346ev_prepare_start (EV_P_ ev_prepare *w)
2770{ 3347{
2771 if (expect_false (ev_is_active (w))) 3348 if (expect_false (ev_is_active (w)))
2772 return; 3349 return;
… …
2798 3375
2799 ev_stop (EV_A_ (W)w); 3376 ev_stop (EV_A_ (W)w);
2800 3377
2801 EV_FREQUENT_CHECK; 3378 EV_FREQUENT_CHECK;
2802} 3379}
3380#endif
2803 3381
3382#if EV_CHECK_ENABLE
2804void 3383void
2805ev_check_start (EV_P_ ev_check *w) 3384ev_check_start (EV_P_ ev_check *w)
2806{ 3385{
2807 if (expect_false (ev_is_active (w))) 3386 if (expect_false (ev_is_active (w)))
2808 return; 3387 return;
… …
2834 3413
2835 ev_stop (EV_A_ (W)w); 3414 ev_stop (EV_A_ (W)w);
2836 3415
2837 EV_FREQUENT_CHECK; 3416 EV_FREQUENT_CHECK;
2838} 3417}
3418#endif
2839 3419
2840#if EV_EMBED_ENABLE 3420#if EV_EMBED_ENABLE
2841void noinline 3421void noinline
2842ev_embed_sweep (EV_P_ ev_embed *w) 3422ev_embed_sweep (EV_P_ ev_embed *w)
2843{ 3423{
2844 ev_loop (w->other, EVLOOP_NONBLOCK); 3424 ev_run (w->other, EVRUN_NOWAIT);
2845} 3425}
2846 3426
2847static void 3427static void
2848embed_io_cb (EV_P_ ev_io *io, int revents) 3428embed_io_cb (EV_P_ ev_io *io, int revents)
2849{ 3429{
2850 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3430 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2851 3431
2852 if (ev_cb (w)) 3432 if (ev_cb (w))
2853 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3433 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2854 else 3434 else
2855 ev_loop (w->other, EVLOOP_NONBLOCK); 3435 ev_run (w->other, EVRUN_NOWAIT);
2856} 3436}
2857 3437
2858static void 3438static void
2859embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3439embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2860{ 3440{
2861 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3441 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2862 3442
2863 { 3443 {
2864 struct ev_loop *loop = w->other; 3444 EV_P = w->other;
2865 3445
2866 while (fdchangecnt) 3446 while (fdchangecnt)
2867 { 3447 {
2868 fd_reify (EV_A); 3448 fd_reify (EV_A);
2869 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3449 ev_run (EV_A_ EVRUN_NOWAIT);
2870 } 3450 }
2871 } 3451 }
2872} 3452}
2873 3453
2874static void 3454static void
2875embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3455embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2876{ 3456{
2877 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3457 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2878 3458
3459 ev_embed_stop (EV_A_ w);
3460
2879 { 3461 {
2880 struct ev_loop *loop = w->other; 3462 EV_P = w->other;
2881 3463
2882 ev_loop_fork (EV_A); 3464 ev_loop_fork (EV_A);
3465 ev_run (EV_A_ EVRUN_NOWAIT);
2883 } 3466 }
3467
3468 ev_embed_start (EV_A_ w);
2884} 3469}
2885 3470
2886#if 0 3471#if 0
2887static void 3472static void
2888embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3473embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2896{ 3481{
2897 if (expect_false (ev_is_active (w))) 3482 if (expect_false (ev_is_active (w)))
2898 return; 3483 return;
2899 3484
2900 { 3485 {
2901 struct ev_loop *loop = w->other; 3486 EV_P = w->other;
2902 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3487 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2903 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3488 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2904 } 3489 }
2905 3490
2906 EV_FREQUENT_CHECK; 3491 EV_FREQUENT_CHECK;
2907 3492
… …
2933 3518
2934 ev_io_stop (EV_A_ &w->io); 3519 ev_io_stop (EV_A_ &w->io);
2935 ev_prepare_stop (EV_A_ &w->prepare); 3520 ev_prepare_stop (EV_A_ &w->prepare);
2936 ev_fork_stop (EV_A_ &w->fork); 3521 ev_fork_stop (EV_A_ &w->fork);
2937 3522
3523 ev_stop (EV_A_ (W)w);
3524
2938 EV_FREQUENT_CHECK; 3525 EV_FREQUENT_CHECK;
2939} 3526}
2940#endif 3527#endif
2941 3528
2942#if EV_FORK_ENABLE 3529#if EV_FORK_ENABLE
… …
2982ev_async_start (EV_P_ ev_async *w) 3569ev_async_start (EV_P_ ev_async *w)
2983{ 3570{
2984 if (expect_false (ev_is_active (w))) 3571 if (expect_false (ev_is_active (w)))
2985 return; 3572 return;
2986 3573
3574 w->sent = 0;
3575
2987 evpipe_init (EV_A); 3576 evpipe_init (EV_A);
2988 3577
2989 EV_FREQUENT_CHECK; 3578 EV_FREQUENT_CHECK;
2990 3579
2991 ev_start (EV_A_ (W)w, ++asynccnt); 3580 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3018 3607
3019void 3608void
3020ev_async_send (EV_P_ ev_async *w) 3609ev_async_send (EV_P_ ev_async *w)
3021{ 3610{
3022 w->sent = 1; 3611 w->sent = 1;
3023 evpipe_write (EV_A_ &gotasync); 3612 evpipe_write (EV_A_ &async_pending);
3024} 3613}
3025#endif 3614#endif
3026 3615
3027/*****************************************************************************/ 3616/*****************************************************************************/
3028 3617
… …
3068{ 3657{
3069 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3658 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3070 3659
3071 if (expect_false (!once)) 3660 if (expect_false (!once))
3072 { 3661 {
3073 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3662 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3074 return; 3663 return;
3075 } 3664 }
3076 3665
3077 once->cb = cb; 3666 once->cb = cb;
3078 once->arg = arg; 3667 once->arg = arg;
… …
3090 ev_timer_set (&once->to, timeout, 0.); 3679 ev_timer_set (&once->to, timeout, 0.);
3091 ev_timer_start (EV_A_ &once->to); 3680 ev_timer_start (EV_A_ &once->to);
3092 } 3681 }
3093} 3682}
3094 3683
3684/*****************************************************************************/
3685
3686#if EV_WALK_ENABLE
3687void
3688ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3689{
3690 int i, j;
3691 ev_watcher_list *wl, *wn;
3692
3693 if (types & (EV_IO | EV_EMBED))
3694 for (i = 0; i < anfdmax; ++i)
3695 for (wl = anfds [i].head; wl; )
3696 {
3697 wn = wl->next;
3698
3699#if EV_EMBED_ENABLE
3700 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3701 {
3702 if (types & EV_EMBED)
3703 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3704 }
3705 else
3706#endif
3707#if EV_USE_INOTIFY
3708 if (ev_cb ((ev_io *)wl) == infy_cb)
3709 ;
3710 else
3711#endif
3712 if ((ev_io *)wl != &pipe_w)
3713 if (types & EV_IO)
3714 cb (EV_A_ EV_IO, wl);
3715
3716 wl = wn;
3717 }
3718
3719 if (types & (EV_TIMER | EV_STAT))
3720 for (i = timercnt + HEAP0; i-- > HEAP0; )
3721#if EV_STAT_ENABLE
3722 /*TODO: timer is not always active*/
3723 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3724 {
3725 if (types & EV_STAT)
3726 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3727 }
3728 else
3729#endif
3730 if (types & EV_TIMER)
3731 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3732
3733#if EV_PERIODIC_ENABLE
3734 if (types & EV_PERIODIC)
3735 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3736 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3737#endif
3738
3739#if EV_IDLE_ENABLE
3740 if (types & EV_IDLE)
3741 for (j = NUMPRI; i--; )
3742 for (i = idlecnt [j]; i--; )
3743 cb (EV_A_ EV_IDLE, idles [j][i]);
3744#endif
3745
3746#if EV_FORK_ENABLE
3747 if (types & EV_FORK)
3748 for (i = forkcnt; i--; )
3749 if (ev_cb (forks [i]) != embed_fork_cb)
3750 cb (EV_A_ EV_FORK, forks [i]);
3751#endif
3752
3753#if EV_ASYNC_ENABLE
3754 if (types & EV_ASYNC)
3755 for (i = asynccnt; i--; )
3756 cb (EV_A_ EV_ASYNC, asyncs [i]);
3757#endif
3758
3759#if EV_PREPARE_ENABLE
3760 if (types & EV_PREPARE)
3761 for (i = preparecnt; i--; )
3762# if EV_EMBED_ENABLE
3763 if (ev_cb (prepares [i]) != embed_prepare_cb)
3764# endif
3765 cb (EV_A_ EV_PREPARE, prepares [i]);
3766#endif
3767
3768#if EV_CHECK_ENABLE
3769 if (types & EV_CHECK)
3770 for (i = checkcnt; i--; )
3771 cb (EV_A_ EV_CHECK, checks [i]);
3772#endif
3773
3774#if EV_SIGNAL_ENABLE
3775 if (types & EV_SIGNAL)
3776 for (i = 0; i < EV_NSIG - 1; ++i)
3777 for (wl = signals [i].head; wl; )
3778 {
3779 wn = wl->next;
3780 cb (EV_A_ EV_SIGNAL, wl);
3781 wl = wn;
3782 }
3783#endif
3784
3785#if EV_CHILD_ENABLE
3786 if (types & EV_CHILD)
3787 for (i = (EV_PID_HASHSIZE); i--; )
3788 for (wl = childs [i]; wl; )
3789 {
3790 wn = wl->next;
3791 cb (EV_A_ EV_CHILD, wl);
3792 wl = wn;
3793 }
3794#endif
3795/* EV_STAT 0x00001000 /* stat data changed */
3796/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3797}
3798#endif
3799
3095#if EV_MULTIPLICITY 3800#if EV_MULTIPLICITY
3096 #include "ev_wrap.h" 3801 #include "ev_wrap.h"
3097#endif 3802#endif
3098 3803
3099#ifdef __cplusplus 3804EV_CPP(})
3100}
3101#endif
3102 3805

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