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Comparing libev/ev.c (file contents):
Revision 1.271 by root, Mon Nov 3 12:13:15 2008 UTC vs.
Revision 1.360 by root, Sun Oct 24 18:12:41 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;
1275} 1600}
1276 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
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{
1280 io_blocktime = interval; 1611 io_blocktime = interval;
1281} 1612}
… …
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
1413#if EV_FORK_ENABLE 1815#if EV_FORK_ENABLE
1414 array_free (fork, EMPTY); 1816 array_free (fork, EMPTY);
1415#endif 1817#endif
1818#if EV_CLEANUP_ENABLE
1819 array_free (cleanup, EMPTY);
1820#endif
1416 array_free (prepare, EMPTY); 1821 array_free (prepare, EMPTY);
1417 array_free (check, EMPTY); 1822 array_free (check, EMPTY);
1418#if EV_ASYNC_ENABLE 1823#if EV_ASYNC_ENABLE
1419 array_free (async, EMPTY); 1824 array_free (async, EMPTY);
1420#endif 1825#endif
1421 1826
1422 backend = 0; 1827 backend = 0;
1828
1829#if EV_MULTIPLICITY
1830 if (ev_is_default_loop (EV_A))
1831#endif
1832 ev_default_loop_ptr = 0;
1833#if EV_MULTIPLICITY
1834 else
1835 ev_free (EV_A);
1836#endif
1423} 1837}
1424 1838
1425#if EV_USE_INOTIFY 1839#if EV_USE_INOTIFY
1426void inline_size infy_fork (EV_P); 1840inline_size void infy_fork (EV_P);
1427#endif 1841#endif
1428 1842
1429void inline_size 1843inline_size void
1430loop_fork (EV_P) 1844loop_fork (EV_P)
1431{ 1845{
1432#if EV_USE_PORT 1846#if EV_USE_PORT
1433 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1847 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1434#endif 1848#endif
… …
1440#endif 1854#endif
1441#if EV_USE_INOTIFY 1855#if EV_USE_INOTIFY
1442 infy_fork (EV_A); 1856 infy_fork (EV_A);
1443#endif 1857#endif
1444 1858
1445 if (ev_is_active (&pipeev)) 1859 if (ev_is_active (&pipe_w))
1446 { 1860 {
1447 /* this "locks" the handlers against writing to the pipe */ 1861 /* this "locks" the handlers against writing to the pipe */
1448 /* while we modify the fd vars */ 1862 /* while we modify the fd vars */
1449 gotsig = 1; 1863 sig_pending = 1;
1450#if EV_ASYNC_ENABLE 1864#if EV_ASYNC_ENABLE
1451 gotasync = 1; 1865 async_pending = 1;
1452#endif 1866#endif
1453 1867
1454 ev_ref (EV_A); 1868 ev_ref (EV_A);
1455 ev_io_stop (EV_A_ &pipeev); 1869 ev_io_stop (EV_A_ &pipe_w);
1456 1870
1457#if EV_USE_EVENTFD 1871#if EV_USE_EVENTFD
1458 if (evfd >= 0) 1872 if (evfd >= 0)
1459 close (evfd); 1873 close (evfd);
1460#endif 1874#endif
1461 1875
1462 if (evpipe [0] >= 0) 1876 if (evpipe [0] >= 0)
1463 { 1877 {
1464 close (evpipe [0]); 1878 EV_WIN32_CLOSE_FD (evpipe [0]);
1465 close (evpipe [1]); 1879 EV_WIN32_CLOSE_FD (evpipe [1]);
1466 } 1880 }
1467 1881
1882#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1468 evpipe_init (EV_A); 1883 evpipe_init (EV_A);
1469 /* now iterate over everything, in case we missed something */ 1884 /* now iterate over everything, in case we missed something */
1470 pipecb (EV_A_ &pipeev, EV_READ); 1885 pipecb (EV_A_ &pipe_w, EV_READ);
1886#endif
1471 } 1887 }
1472 1888
1473 postfork = 0; 1889 postfork = 0;
1474} 1890}
1475 1891
1476#if EV_MULTIPLICITY 1892#if EV_MULTIPLICITY
1477 1893
1478struct ev_loop * 1894struct ev_loop *
1479ev_loop_new (unsigned int flags) 1895ev_loop_new (unsigned int flags)
1480{ 1896{
1481 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1897 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1482 1898
1483 memset (loop, 0, sizeof (struct ev_loop)); 1899 memset (EV_A, 0, sizeof (struct ev_loop));
1484
1485 loop_init (EV_A_ flags); 1900 loop_init (EV_A_ flags);
1486 1901
1487 if (ev_backend (EV_A)) 1902 if (ev_backend (EV_A))
1488 return loop; 1903 return EV_A;
1489 1904
1905 ev_free (EV_A);
1490 return 0; 1906 return 0;
1491} 1907}
1492 1908
1493void 1909#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 1910
1506#if EV_VERIFY 1911#if EV_VERIFY
1507static void noinline 1912static void noinline
1508verify_watcher (EV_P_ W w) 1913verify_watcher (EV_P_ W w)
1509{ 1914{
1510 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1915 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1511 1916
1512 if (w->pending) 1917 if (w->pending)
1513 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1918 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1514} 1919}
1515 1920
1516static void noinline 1921static void noinline
1517verify_heap (EV_P_ ANHE *heap, int N) 1922verify_heap (EV_P_ ANHE *heap, int N)
1518{ 1923{
1519 int i; 1924 int i;
1520 1925
1521 for (i = HEAP0; i < N + HEAP0; ++i) 1926 for (i = HEAP0; i < N + HEAP0; ++i)
1522 { 1927 {
1523 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1928 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]))); 1929 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])))); 1930 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1526 1931
1527 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1932 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1528 } 1933 }
1529} 1934}
1530 1935
1531static void noinline 1936static void noinline
1532array_verify (EV_P_ W *ws, int cnt) 1937array_verify (EV_P_ W *ws, int cnt)
1533{ 1938{
1534 while (cnt--) 1939 while (cnt--)
1535 { 1940 {
1536 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1941 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1537 verify_watcher (EV_A_ ws [cnt]); 1942 verify_watcher (EV_A_ ws [cnt]);
1538 } 1943 }
1539} 1944}
1540#endif 1945#endif
1541 1946
1947#if EV_FEATURE_API
1542void 1948void
1543ev_loop_verify (EV_P) 1949ev_verify (EV_P)
1544{ 1950{
1545#if EV_VERIFY 1951#if EV_VERIFY
1546 int i; 1952 int i;
1547 WL w; 1953 WL w;
1548 1954
1549 assert (activecnt >= -1); 1955 assert (activecnt >= -1);
1550 1956
1551 assert (fdchangemax >= fdchangecnt); 1957 assert (fdchangemax >= fdchangecnt);
1552 for (i = 0; i < fdchangecnt; ++i) 1958 for (i = 0; i < fdchangecnt; ++i)
1553 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1959 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1554 1960
1555 assert (anfdmax >= 0); 1961 assert (anfdmax >= 0);
1556 for (i = 0; i < anfdmax; ++i) 1962 for (i = 0; i < anfdmax; ++i)
1557 for (w = anfds [i].head; w; w = w->next) 1963 for (w = anfds [i].head; w; w = w->next)
1558 { 1964 {
1559 verify_watcher (EV_A_ (W)w); 1965 verify_watcher (EV_A_ (W)w);
1560 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1966 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)); 1967 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1562 } 1968 }
1563 1969
1564 assert (timermax >= timercnt); 1970 assert (timermax >= timercnt);
1565 verify_heap (EV_A_ timers, timercnt); 1971 verify_heap (EV_A_ timers, timercnt);
1566 1972
… …
1582#if EV_FORK_ENABLE 1988#if EV_FORK_ENABLE
1583 assert (forkmax >= forkcnt); 1989 assert (forkmax >= forkcnt);
1584 array_verify (EV_A_ (W *)forks, forkcnt); 1990 array_verify (EV_A_ (W *)forks, forkcnt);
1585#endif 1991#endif
1586 1992
1993#if EV_CLEANUP_ENABLE
1994 assert (cleanupmax >= cleanupcnt);
1995 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
1996#endif
1997
1587#if EV_ASYNC_ENABLE 1998#if EV_ASYNC_ENABLE
1588 assert (asyncmax >= asynccnt); 1999 assert (asyncmax >= asynccnt);
1589 array_verify (EV_A_ (W *)asyncs, asynccnt); 2000 array_verify (EV_A_ (W *)asyncs, asynccnt);
1590#endif 2001#endif
1591 2002
2003#if EV_PREPARE_ENABLE
1592 assert (preparemax >= preparecnt); 2004 assert (preparemax >= preparecnt);
1593 array_verify (EV_A_ (W *)prepares, preparecnt); 2005 array_verify (EV_A_ (W *)prepares, preparecnt);
2006#endif
1594 2007
2008#if EV_CHECK_ENABLE
1595 assert (checkmax >= checkcnt); 2009 assert (checkmax >= checkcnt);
1596 array_verify (EV_A_ (W *)checks, checkcnt); 2010 array_verify (EV_A_ (W *)checks, checkcnt);
2011#endif
1597 2012
1598# if 0 2013# if 0
2014#if EV_CHILD_ENABLE
1599 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2015 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) 2016 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2017#endif
1601# endif 2018# endif
1602#endif 2019#endif
1603} 2020}
1604 2021#endif
1605#endif /* multiplicity */
1606 2022
1607#if EV_MULTIPLICITY 2023#if EV_MULTIPLICITY
1608struct ev_loop * 2024struct ev_loop *
1609ev_default_loop_init (unsigned int flags)
1610#else 2025#else
1611int 2026int
2027#endif
1612ev_default_loop (unsigned int flags) 2028ev_default_loop (unsigned int flags)
1613#endif
1614{ 2029{
1615 if (!ev_default_loop_ptr) 2030 if (!ev_default_loop_ptr)
1616 { 2031 {
1617#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
1618 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2033 EV_P = ev_default_loop_ptr = &default_loop_struct;
1619#else 2034#else
1620 ev_default_loop_ptr = 1; 2035 ev_default_loop_ptr = 1;
1621#endif 2036#endif
1622 2037
1623 loop_init (EV_A_ flags); 2038 loop_init (EV_A_ flags);
1624 2039
1625 if (ev_backend (EV_A)) 2040 if (ev_backend (EV_A))
1626 { 2041 {
1627#ifndef _WIN32 2042#if EV_CHILD_ENABLE
1628 ev_signal_init (&childev, childcb, SIGCHLD); 2043 ev_signal_init (&childev, childcb, SIGCHLD);
1629 ev_set_priority (&childev, EV_MAXPRI); 2044 ev_set_priority (&childev, EV_MAXPRI);
1630 ev_signal_start (EV_A_ &childev); 2045 ev_signal_start (EV_A_ &childev);
1631 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2046 ev_unref (EV_A); /* child watcher should not keep loop alive */
1632#endif 2047#endif
… …
1637 2052
1638 return ev_default_loop_ptr; 2053 return ev_default_loop_ptr;
1639} 2054}
1640 2055
1641void 2056void
1642ev_default_destroy (void) 2057ev_loop_fork (EV_P)
1643{ 2058{
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 */ 2059 postfork = 1; /* must be in line with ev_default_fork */
1666} 2060}
1667 2061
1668/*****************************************************************************/ 2062/*****************************************************************************/
1669 2063
1670void 2064void
1671ev_invoke (EV_P_ void *w, int revents) 2065ev_invoke (EV_P_ void *w, int revents)
1672{ 2066{
1673 EV_CB_INVOKE ((W)w, revents); 2067 EV_CB_INVOKE ((W)w, revents);
1674} 2068}
1675 2069
1676void inline_speed 2070unsigned int
1677call_pending (EV_P) 2071ev_pending_count (EV_P)
2072{
2073 int pri;
2074 unsigned int count = 0;
2075
2076 for (pri = NUMPRI; pri--; )
2077 count += pendingcnt [pri];
2078
2079 return count;
2080}
2081
2082void noinline
2083ev_invoke_pending (EV_P)
1678{ 2084{
1679 int pri; 2085 int pri;
1680 2086
1681 for (pri = NUMPRI; pri--; ) 2087 for (pri = NUMPRI; pri--; )
1682 while (pendingcnt [pri]) 2088 while (pendingcnt [pri])
1683 { 2089 {
1684 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2090 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1685 2091
1686 if (expect_true (p->w))
1687 {
1688 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2092 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2093 /* ^ this is no longer true, as pending_w could be here */
1689 2094
1690 p->w->pending = 0; 2095 p->w->pending = 0;
1691 EV_CB_INVOKE (p->w, p->events); 2096 EV_CB_INVOKE (p->w, p->events);
1692 EV_FREQUENT_CHECK; 2097 EV_FREQUENT_CHECK;
1693 }
1694 } 2098 }
1695} 2099}
1696 2100
1697#if EV_IDLE_ENABLE 2101#if EV_IDLE_ENABLE
1698void inline_size 2102/* make idle watchers pending. this handles the "call-idle */
2103/* only when higher priorities are idle" logic */
2104inline_size void
1699idle_reify (EV_P) 2105idle_reify (EV_P)
1700{ 2106{
1701 if (expect_false (idleall)) 2107 if (expect_false (idleall))
1702 { 2108 {
1703 int pri; 2109 int pri;
… …
1715 } 2121 }
1716 } 2122 }
1717} 2123}
1718#endif 2124#endif
1719 2125
1720void inline_size 2126/* make timers pending */
2127inline_size void
1721timers_reify (EV_P) 2128timers_reify (EV_P)
1722{ 2129{
1723 EV_FREQUENT_CHECK; 2130 EV_FREQUENT_CHECK;
1724 2131
1725 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2132 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1726 { 2133 {
1727 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2134 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 { 2135 {
2136 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2137
2138 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2139
2140 /* first reschedule or stop timer */
2141 if (w->repeat)
2142 {
1734 ev_at (w) += w->repeat; 2143 ev_at (w) += w->repeat;
1735 if (ev_at (w) < mn_now) 2144 if (ev_at (w) < mn_now)
1736 ev_at (w) = mn_now; 2145 ev_at (w) = mn_now;
1737 2146
1738 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2147 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1739 2148
1740 ANHE_at_cache (timers [HEAP0]); 2149 ANHE_at_cache (timers [HEAP0]);
1741 downheap (timers, timercnt, HEAP0); 2150 downheap (timers, timercnt, HEAP0);
2151 }
2152 else
2153 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2154
2155 EV_FREQUENT_CHECK;
2156 feed_reverse (EV_A_ (W)w);
1742 } 2157 }
1743 else 2158 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1744 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1745 2159
1746 EV_FREQUENT_CHECK; 2160 feed_reverse_done (EV_A_ EV_TIMER);
1747 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1748 } 2161 }
1749} 2162}
1750 2163
1751#if EV_PERIODIC_ENABLE 2164#if EV_PERIODIC_ENABLE
1752void inline_size 2165/* make periodics pending */
2166inline_size void
1753periodics_reify (EV_P) 2167periodics_reify (EV_P)
1754{ 2168{
1755 EV_FREQUENT_CHECK; 2169 EV_FREQUENT_CHECK;
1756 2170
1757 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2171 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1758 { 2172 {
1759 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2173 int feed_count = 0;
1760 2174
1761 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2175 do
1762
1763 /* first reschedule or stop timer */
1764 if (w->reschedule_cb)
1765 { 2176 {
2177 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2178
2179 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2180
2181 /* first reschedule or stop timer */
2182 if (w->reschedule_cb)
2183 {
1766 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2184 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1767 2185
1768 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2186 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1769 2187
1770 ANHE_at_cache (periodics [HEAP0]); 2188 ANHE_at_cache (periodics [HEAP0]);
1771 downheap (periodics, periodiccnt, HEAP0); 2189 downheap (periodics, periodiccnt, HEAP0);
2190 }
2191 else if (w->interval)
2192 {
2193 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2194 /* if next trigger time is not sufficiently in the future, put it there */
2195 /* this might happen because of floating point inexactness */
2196 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2197 {
2198 ev_at (w) += w->interval;
2199
2200 /* if interval is unreasonably low we might still have a time in the past */
2201 /* so correct this. this will make the periodic very inexact, but the user */
2202 /* has effectively asked to get triggered more often than possible */
2203 if (ev_at (w) < ev_rt_now)
2204 ev_at (w) = ev_rt_now;
2205 }
2206
2207 ANHE_at_cache (periodics [HEAP0]);
2208 downheap (periodics, periodiccnt, HEAP0);
2209 }
2210 else
2211 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2212
2213 EV_FREQUENT_CHECK;
2214 feed_reverse (EV_A_ (W)w);
1772 } 2215 }
1773 else if (w->interval) 2216 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 2217
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); 2218 feed_reverse_done (EV_A_ EV_PERIODIC);
1797 } 2219 }
1798} 2220}
1799 2221
2222/* simply recalculate all periodics */
2223/* TODO: maybe ensure that at least one event happens when jumping forward? */
1800static void noinline 2224static void noinline
1801periodics_reschedule (EV_P) 2225periodics_reschedule (EV_P)
1802{ 2226{
1803 int i; 2227 int i;
1804 2228
… …
1817 2241
1818 reheap (periodics, periodiccnt); 2242 reheap (periodics, periodiccnt);
1819} 2243}
1820#endif 2244#endif
1821 2245
1822void inline_speed 2246/* adjust all timers by a given offset */
2247static void noinline
2248timers_reschedule (EV_P_ ev_tstamp adjust)
2249{
2250 int i;
2251
2252 for (i = 0; i < timercnt; ++i)
2253 {
2254 ANHE *he = timers + i + HEAP0;
2255 ANHE_w (*he)->at += adjust;
2256 ANHE_at_cache (*he);
2257 }
2258}
2259
2260/* fetch new monotonic and realtime times from the kernel */
2261/* also detect if there was a timejump, and act accordingly */
2262inline_speed void
1823time_update (EV_P_ ev_tstamp max_block) 2263time_update (EV_P_ ev_tstamp max_block)
1824{ 2264{
1825 int i;
1826
1827#if EV_USE_MONOTONIC 2265#if EV_USE_MONOTONIC
1828 if (expect_true (have_monotonic)) 2266 if (expect_true (have_monotonic))
1829 { 2267 {
2268 int i;
1830 ev_tstamp odiff = rtmn_diff; 2269 ev_tstamp odiff = rtmn_diff;
1831 2270
1832 mn_now = get_clock (); 2271 mn_now = get_clock ();
1833 2272
1834 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2273 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1860 ev_rt_now = ev_time (); 2299 ev_rt_now = ev_time ();
1861 mn_now = get_clock (); 2300 mn_now = get_clock ();
1862 now_floor = mn_now; 2301 now_floor = mn_now;
1863 } 2302 }
1864 2303
2304 /* no timer adjustment, as the monotonic clock doesn't jump */
2305 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865# if EV_PERIODIC_ENABLE 2306# if EV_PERIODIC_ENABLE
1866 periodics_reschedule (EV_A); 2307 periodics_reschedule (EV_A);
1867# endif 2308# endif
1868 /* no timer adjustment, as the monotonic clock doesn't jump */
1869 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870 } 2309 }
1871 else 2310 else
1872#endif 2311#endif
1873 { 2312 {
1874 ev_rt_now = ev_time (); 2313 ev_rt_now = ev_time ();
1875 2314
1876 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2315 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1877 { 2316 {
2317 /* adjust timers. this is easy, as the offset is the same for all of them */
2318 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1878#if EV_PERIODIC_ENABLE 2319#if EV_PERIODIC_ENABLE
1879 periodics_reschedule (EV_A); 2320 periodics_reschedule (EV_A);
1880#endif 2321#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 } 2322 }
1889 2323
1890 mn_now = ev_rt_now; 2324 mn_now = ev_rt_now;
1891 } 2325 }
1892} 2326}
1893 2327
1894void 2328void
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) 2329ev_run (EV_P_ int flags)
1916{ 2330{
2331#if EV_FEATURE_API
2332 ++loop_depth;
2333#endif
2334
2335 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2336
1917 loop_done = EVUNLOOP_CANCEL; 2337 loop_done = EVBREAK_CANCEL;
1918 2338
1919 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2339 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1920 2340
1921 do 2341 do
1922 { 2342 {
1923#if EV_VERIFY >= 2 2343#if EV_VERIFY >= 2
1924 ev_loop_verify (EV_A); 2344 ev_verify (EV_A);
1925#endif 2345#endif
1926 2346
1927#ifndef _WIN32 2347#ifndef _WIN32
1928 if (expect_false (curpid)) /* penalise the forking check even more */ 2348 if (expect_false (curpid)) /* penalise the forking check even more */
1929 if (expect_false (getpid () != curpid)) 2349 if (expect_false (getpid () != curpid))
… …
1937 /* we might have forked, so queue fork handlers */ 2357 /* we might have forked, so queue fork handlers */
1938 if (expect_false (postfork)) 2358 if (expect_false (postfork))
1939 if (forkcnt) 2359 if (forkcnt)
1940 { 2360 {
1941 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2361 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1942 call_pending (EV_A); 2362 EV_INVOKE_PENDING;
1943 } 2363 }
1944#endif 2364#endif
1945 2365
2366#if EV_PREPARE_ENABLE
1946 /* queue prepare watchers (and execute them) */ 2367 /* queue prepare watchers (and execute them) */
1947 if (expect_false (preparecnt)) 2368 if (expect_false (preparecnt))
1948 { 2369 {
1949 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2370 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1950 call_pending (EV_A); 2371 EV_INVOKE_PENDING;
1951 } 2372 }
2373#endif
1952 2374
1953 if (expect_false (!activecnt)) 2375 if (expect_false (loop_done))
1954 break; 2376 break;
1955 2377
1956 /* we might have forked, so reify kernel state if necessary */ 2378 /* we might have forked, so reify kernel state if necessary */
1957 if (expect_false (postfork)) 2379 if (expect_false (postfork))
1958 loop_fork (EV_A); 2380 loop_fork (EV_A);
… …
1963 /* calculate blocking time */ 2385 /* calculate blocking time */
1964 { 2386 {
1965 ev_tstamp waittime = 0.; 2387 ev_tstamp waittime = 0.;
1966 ev_tstamp sleeptime = 0.; 2388 ev_tstamp sleeptime = 0.;
1967 2389
2390 /* remember old timestamp for io_blocktime calculation */
2391 ev_tstamp prev_mn_now = mn_now;
2392
2393 /* update time to cancel out callback processing overhead */
2394 time_update (EV_A_ 1e100);
2395
1968 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2396 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1969 { 2397 {
1970 /* update time to cancel out callback processing overhead */
1971 time_update (EV_A_ 1e100);
1972
1973 waittime = MAX_BLOCKTIME; 2398 waittime = MAX_BLOCKTIME;
1974 2399
1975 if (timercnt) 2400 if (timercnt)
1976 { 2401 {
1977 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2402 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1984 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2409 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1985 if (waittime > to) waittime = to; 2410 if (waittime > to) waittime = to;
1986 } 2411 }
1987#endif 2412#endif
1988 2413
2414 /* don't let timeouts decrease the waittime below timeout_blocktime */
1989 if (expect_false (waittime < timeout_blocktime)) 2415 if (expect_false (waittime < timeout_blocktime))
1990 waittime = timeout_blocktime; 2416 waittime = timeout_blocktime;
1991 2417
1992 sleeptime = waittime - backend_fudge; 2418 /* extra check because io_blocktime is commonly 0 */
1993
1994 if (expect_true (sleeptime > io_blocktime)) 2419 if (expect_false (io_blocktime))
1995 sleeptime = io_blocktime;
1996
1997 if (sleeptime)
1998 { 2420 {
2421 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2422
2423 if (sleeptime > waittime - backend_fudge)
2424 sleeptime = waittime - backend_fudge;
2425
2426 if (expect_true (sleeptime > 0.))
2427 {
1999 ev_sleep (sleeptime); 2428 ev_sleep (sleeptime);
2000 waittime -= sleeptime; 2429 waittime -= sleeptime;
2430 }
2001 } 2431 }
2002 } 2432 }
2003 2433
2434#if EV_FEATURE_API
2004 ++loop_count; 2435 ++loop_count;
2436#endif
2437 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2005 backend_poll (EV_A_ waittime); 2438 backend_poll (EV_A_ waittime);
2439 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2006 2440
2007 /* update ev_rt_now, do magic */ 2441 /* update ev_rt_now, do magic */
2008 time_update (EV_A_ waittime + sleeptime); 2442 time_update (EV_A_ waittime + sleeptime);
2009 } 2443 }
2010 2444
… …
2017#if EV_IDLE_ENABLE 2451#if EV_IDLE_ENABLE
2018 /* queue idle watchers unless other events are pending */ 2452 /* queue idle watchers unless other events are pending */
2019 idle_reify (EV_A); 2453 idle_reify (EV_A);
2020#endif 2454#endif
2021 2455
2456#if EV_CHECK_ENABLE
2022 /* queue check watchers, to be executed first */ 2457 /* queue check watchers, to be executed first */
2023 if (expect_false (checkcnt)) 2458 if (expect_false (checkcnt))
2024 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2459 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2460#endif
2025 2461
2026 call_pending (EV_A); 2462 EV_INVOKE_PENDING;
2027 } 2463 }
2028 while (expect_true ( 2464 while (expect_true (
2029 activecnt 2465 activecnt
2030 && !loop_done 2466 && !loop_done
2031 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2467 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2032 )); 2468 ));
2033 2469
2034 if (loop_done == EVUNLOOP_ONE) 2470 if (loop_done == EVBREAK_ONE)
2035 loop_done = EVUNLOOP_CANCEL; 2471 loop_done = EVBREAK_CANCEL;
2036}
2037 2472
2473#if EV_FEATURE_API
2474 --loop_depth;
2475#endif
2476}
2477
2038void 2478void
2039ev_unloop (EV_P_ int how) 2479ev_break (EV_P_ int how)
2040{ 2480{
2041 loop_done = how; 2481 loop_done = how;
2042} 2482}
2043 2483
2484void
2485ev_ref (EV_P)
2486{
2487 ++activecnt;
2488}
2489
2490void
2491ev_unref (EV_P)
2492{
2493 --activecnt;
2494}
2495
2496void
2497ev_now_update (EV_P)
2498{
2499 time_update (EV_A_ 1e100);
2500}
2501
2502void
2503ev_suspend (EV_P)
2504{
2505 ev_now_update (EV_A);
2506}
2507
2508void
2509ev_resume (EV_P)
2510{
2511 ev_tstamp mn_prev = mn_now;
2512
2513 ev_now_update (EV_A);
2514 timers_reschedule (EV_A_ mn_now - mn_prev);
2515#if EV_PERIODIC_ENABLE
2516 /* TODO: really do this? */
2517 periodics_reschedule (EV_A);
2518#endif
2519}
2520
2044/*****************************************************************************/ 2521/*****************************************************************************/
2522/* singly-linked list management, used when the expected list length is short */
2045 2523
2046void inline_size 2524inline_size void
2047wlist_add (WL *head, WL elem) 2525wlist_add (WL *head, WL elem)
2048{ 2526{
2049 elem->next = *head; 2527 elem->next = *head;
2050 *head = elem; 2528 *head = elem;
2051} 2529}
2052 2530
2053void inline_size 2531inline_size void
2054wlist_del (WL *head, WL elem) 2532wlist_del (WL *head, WL elem)
2055{ 2533{
2056 while (*head) 2534 while (*head)
2057 { 2535 {
2058 if (*head == elem) 2536 if (expect_true (*head == elem))
2059 { 2537 {
2060 *head = elem->next; 2538 *head = elem->next;
2061 return; 2539 break;
2062 } 2540 }
2063 2541
2064 head = &(*head)->next; 2542 head = &(*head)->next;
2065 } 2543 }
2066} 2544}
2067 2545
2068void inline_speed 2546/* internal, faster, version of ev_clear_pending */
2547inline_speed void
2069clear_pending (EV_P_ W w) 2548clear_pending (EV_P_ W w)
2070{ 2549{
2071 if (w->pending) 2550 if (w->pending)
2072 { 2551 {
2073 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2552 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2074 w->pending = 0; 2553 w->pending = 0;
2075 } 2554 }
2076} 2555}
2077 2556
2078int 2557int
… …
2082 int pending = w_->pending; 2561 int pending = w_->pending;
2083 2562
2084 if (expect_true (pending)) 2563 if (expect_true (pending))
2085 { 2564 {
2086 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2565 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2566 p->w = (W)&pending_w;
2087 w_->pending = 0; 2567 w_->pending = 0;
2088 p->w = 0;
2089 return p->events; 2568 return p->events;
2090 } 2569 }
2091 else 2570 else
2092 return 0; 2571 return 0;
2093} 2572}
2094 2573
2095void inline_size 2574inline_size void
2096pri_adjust (EV_P_ W w) 2575pri_adjust (EV_P_ W w)
2097{ 2576{
2098 int pri = w->priority; 2577 int pri = ev_priority (w);
2099 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2578 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2100 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2579 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2101 w->priority = pri; 2580 ev_set_priority (w, pri);
2102} 2581}
2103 2582
2104void inline_speed 2583inline_speed void
2105ev_start (EV_P_ W w, int active) 2584ev_start (EV_P_ W w, int active)
2106{ 2585{
2107 pri_adjust (EV_A_ w); 2586 pri_adjust (EV_A_ w);
2108 w->active = active; 2587 w->active = active;
2109 ev_ref (EV_A); 2588 ev_ref (EV_A);
2110} 2589}
2111 2590
2112void inline_size 2591inline_size void
2113ev_stop (EV_P_ W w) 2592ev_stop (EV_P_ W w)
2114{ 2593{
2115 ev_unref (EV_A); 2594 ev_unref (EV_A);
2116 w->active = 0; 2595 w->active = 0;
2117} 2596}
… …
2124 int fd = w->fd; 2603 int fd = w->fd;
2125 2604
2126 if (expect_false (ev_is_active (w))) 2605 if (expect_false (ev_is_active (w)))
2127 return; 2606 return;
2128 2607
2129 assert (("ev_io_start called with negative fd", fd >= 0)); 2608 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)))); 2609 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2131 2610
2132 EV_FREQUENT_CHECK; 2611 EV_FREQUENT_CHECK;
2133 2612
2134 ev_start (EV_A_ (W)w, 1); 2613 ev_start (EV_A_ (W)w, 1);
2135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2614 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2136 wlist_add (&anfds[fd].head, (WL)w); 2615 wlist_add (&anfds[fd].head, (WL)w);
2137 2616
2138 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2617 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2139 w->events &= ~EV_IOFDSET; 2618 w->events &= ~EV__IOFDSET;
2140 2619
2141 EV_FREQUENT_CHECK; 2620 EV_FREQUENT_CHECK;
2142} 2621}
2143 2622
2144void noinline 2623void noinline
… …
2146{ 2625{
2147 clear_pending (EV_A_ (W)w); 2626 clear_pending (EV_A_ (W)w);
2148 if (expect_false (!ev_is_active (w))) 2627 if (expect_false (!ev_is_active (w)))
2149 return; 2628 return;
2150 2629
2151 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2630 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2152 2631
2153 EV_FREQUENT_CHECK; 2632 EV_FREQUENT_CHECK;
2154 2633
2155 wlist_del (&anfds[w->fd].head, (WL)w); 2634 wlist_del (&anfds[w->fd].head, (WL)w);
2156 ev_stop (EV_A_ (W)w); 2635 ev_stop (EV_A_ (W)w);
2157 2636
2158 fd_change (EV_A_ w->fd, 1); 2637 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2159 2638
2160 EV_FREQUENT_CHECK; 2639 EV_FREQUENT_CHECK;
2161} 2640}
2162 2641
2163void noinline 2642void noinline
… …
2166 if (expect_false (ev_is_active (w))) 2645 if (expect_false (ev_is_active (w)))
2167 return; 2646 return;
2168 2647
2169 ev_at (w) += mn_now; 2648 ev_at (w) += mn_now;
2170 2649
2171 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2650 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2172 2651
2173 EV_FREQUENT_CHECK; 2652 EV_FREQUENT_CHECK;
2174 2653
2175 ++timercnt; 2654 ++timercnt;
2176 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2655 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2179 ANHE_at_cache (timers [ev_active (w)]); 2658 ANHE_at_cache (timers [ev_active (w)]);
2180 upheap (timers, ev_active (w)); 2659 upheap (timers, ev_active (w));
2181 2660
2182 EV_FREQUENT_CHECK; 2661 EV_FREQUENT_CHECK;
2183 2662
2184 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2663 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2185} 2664}
2186 2665
2187void noinline 2666void noinline
2188ev_timer_stop (EV_P_ ev_timer *w) 2667ev_timer_stop (EV_P_ ev_timer *w)
2189{ 2668{
… …
2194 EV_FREQUENT_CHECK; 2673 EV_FREQUENT_CHECK;
2195 2674
2196 { 2675 {
2197 int active = ev_active (w); 2676 int active = ev_active (w);
2198 2677
2199 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2678 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2200 2679
2201 --timercnt; 2680 --timercnt;
2202 2681
2203 if (expect_true (active < timercnt + HEAP0)) 2682 if (expect_true (active < timercnt + HEAP0))
2204 { 2683 {
2205 timers [active] = timers [timercnt + HEAP0]; 2684 timers [active] = timers [timercnt + HEAP0];
2206 adjustheap (timers, timercnt, active); 2685 adjustheap (timers, timercnt, active);
2207 } 2686 }
2208 } 2687 }
2209 2688
2210 EV_FREQUENT_CHECK;
2211
2212 ev_at (w) -= mn_now; 2689 ev_at (w) -= mn_now;
2213 2690
2214 ev_stop (EV_A_ (W)w); 2691 ev_stop (EV_A_ (W)w);
2692
2693 EV_FREQUENT_CHECK;
2215} 2694}
2216 2695
2217void noinline 2696void noinline
2218ev_timer_again (EV_P_ ev_timer *w) 2697ev_timer_again (EV_P_ ev_timer *w)
2219{ 2698{
… …
2237 } 2716 }
2238 2717
2239 EV_FREQUENT_CHECK; 2718 EV_FREQUENT_CHECK;
2240} 2719}
2241 2720
2721ev_tstamp
2722ev_timer_remaining (EV_P_ ev_timer *w)
2723{
2724 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2725}
2726
2242#if EV_PERIODIC_ENABLE 2727#if EV_PERIODIC_ENABLE
2243void noinline 2728void noinline
2244ev_periodic_start (EV_P_ ev_periodic *w) 2729ev_periodic_start (EV_P_ ev_periodic *w)
2245{ 2730{
2246 if (expect_false (ev_is_active (w))) 2731 if (expect_false (ev_is_active (w)))
… …
2248 2733
2249 if (w->reschedule_cb) 2734 if (w->reschedule_cb)
2250 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2735 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251 else if (w->interval) 2736 else if (w->interval)
2252 { 2737 {
2253 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2738 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 */ 2739 /* 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; 2740 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2256 } 2741 }
2257 else 2742 else
2258 ev_at (w) = w->offset; 2743 ev_at (w) = w->offset;
… …
2266 ANHE_at_cache (periodics [ev_active (w)]); 2751 ANHE_at_cache (periodics [ev_active (w)]);
2267 upheap (periodics, ev_active (w)); 2752 upheap (periodics, ev_active (w));
2268 2753
2269 EV_FREQUENT_CHECK; 2754 EV_FREQUENT_CHECK;
2270 2755
2271 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2756 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2272} 2757}
2273 2758
2274void noinline 2759void noinline
2275ev_periodic_stop (EV_P_ ev_periodic *w) 2760ev_periodic_stop (EV_P_ ev_periodic *w)
2276{ 2761{
… …
2281 EV_FREQUENT_CHECK; 2766 EV_FREQUENT_CHECK;
2282 2767
2283 { 2768 {
2284 int active = ev_active (w); 2769 int active = ev_active (w);
2285 2770
2286 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2771 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2287 2772
2288 --periodiccnt; 2773 --periodiccnt;
2289 2774
2290 if (expect_true (active < periodiccnt + HEAP0)) 2775 if (expect_true (active < periodiccnt + HEAP0))
2291 { 2776 {
2292 periodics [active] = periodics [periodiccnt + HEAP0]; 2777 periodics [active] = periodics [periodiccnt + HEAP0];
2293 adjustheap (periodics, periodiccnt, active); 2778 adjustheap (periodics, periodiccnt, active);
2294 } 2779 }
2295 } 2780 }
2296 2781
2297 EV_FREQUENT_CHECK;
2298
2299 ev_stop (EV_A_ (W)w); 2782 ev_stop (EV_A_ (W)w);
2783
2784 EV_FREQUENT_CHECK;
2300} 2785}
2301 2786
2302void noinline 2787void noinline
2303ev_periodic_again (EV_P_ ev_periodic *w) 2788ev_periodic_again (EV_P_ ev_periodic *w)
2304{ 2789{
… …
2310 2795
2311#ifndef SA_RESTART 2796#ifndef SA_RESTART
2312# define SA_RESTART 0 2797# define SA_RESTART 0
2313#endif 2798#endif
2314 2799
2800#if EV_SIGNAL_ENABLE
2801
2315void noinline 2802void noinline
2316ev_signal_start (EV_P_ ev_signal *w) 2803ev_signal_start (EV_P_ ev_signal *w)
2317{ 2804{
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))) 2805 if (expect_false (ev_is_active (w)))
2322 return; 2806 return;
2323 2807
2324 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2808 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2325 2809
2326 evpipe_init (EV_A); 2810#if EV_MULTIPLICITY
2811 assert (("libev: a signal must not be attached to two different loops",
2812 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2327 2813
2328 EV_FREQUENT_CHECK; 2814 signals [w->signum - 1].loop = EV_A;
2815#endif
2329 2816
2817 EV_FREQUENT_CHECK;
2818
2819#if EV_USE_SIGNALFD
2820 if (sigfd == -2)
2330 { 2821 {
2331#ifndef _WIN32 2822 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2332 sigset_t full, prev; 2823 if (sigfd < 0 && errno == EINVAL)
2333 sigfillset (&full); 2824 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2334 sigprocmask (SIG_SETMASK, &full, &prev);
2335#endif
2336 2825
2337 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2826 if (sigfd >= 0)
2827 {
2828 fd_intern (sigfd); /* doing it twice will not hurt */
2338 2829
2339#ifndef _WIN32 2830 sigemptyset (&sigfd_set);
2340 sigprocmask (SIG_SETMASK, &prev, 0); 2831
2341#endif 2832 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2833 ev_set_priority (&sigfd_w, EV_MAXPRI);
2834 ev_io_start (EV_A_ &sigfd_w);
2835 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2836 }
2342 } 2837 }
2838
2839 if (sigfd >= 0)
2840 {
2841 /* TODO: check .head */
2842 sigaddset (&sigfd_set, w->signum);
2843 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2844
2845 signalfd (sigfd, &sigfd_set, 0);
2846 }
2847#endif
2343 2848
2344 ev_start (EV_A_ (W)w, 1); 2849 ev_start (EV_A_ (W)w, 1);
2345 wlist_add (&signals [w->signum - 1].head, (WL)w); 2850 wlist_add (&signals [w->signum - 1].head, (WL)w);
2346 2851
2347 if (!((WL)w)->next) 2852 if (!((WL)w)->next)
2853# if EV_USE_SIGNALFD
2854 if (sigfd < 0) /*TODO*/
2855# endif
2348 { 2856 {
2349#if _WIN32 2857# ifdef _WIN32
2858 evpipe_init (EV_A);
2859
2350 signal (w->signum, ev_sighandler); 2860 signal (w->signum, ev_sighandler);
2351#else 2861# else
2352 struct sigaction sa; 2862 struct sigaction sa;
2863
2864 evpipe_init (EV_A);
2865
2353 sa.sa_handler = ev_sighandler; 2866 sa.sa_handler = ev_sighandler;
2354 sigfillset (&sa.sa_mask); 2867 sigfillset (&sa.sa_mask);
2355 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2868 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2356 sigaction (w->signum, &sa, 0); 2869 sigaction (w->signum, &sa, 0);
2870
2871 sigemptyset (&sa.sa_mask);
2872 sigaddset (&sa.sa_mask, w->signum);
2873 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2357#endif 2874#endif
2358 } 2875 }
2359 2876
2360 EV_FREQUENT_CHECK; 2877 EV_FREQUENT_CHECK;
2361} 2878}
2362 2879
2363void noinline 2880void noinline
… …
2371 2888
2372 wlist_del (&signals [w->signum - 1].head, (WL)w); 2889 wlist_del (&signals [w->signum - 1].head, (WL)w);
2373 ev_stop (EV_A_ (W)w); 2890 ev_stop (EV_A_ (W)w);
2374 2891
2375 if (!signals [w->signum - 1].head) 2892 if (!signals [w->signum - 1].head)
2893 {
2894#if EV_MULTIPLICITY
2895 signals [w->signum - 1].loop = 0; /* unattach from signal */
2896#endif
2897#if EV_USE_SIGNALFD
2898 if (sigfd >= 0)
2899 {
2900 sigset_t ss;
2901
2902 sigemptyset (&ss);
2903 sigaddset (&ss, w->signum);
2904 sigdelset (&sigfd_set, w->signum);
2905
2906 signalfd (sigfd, &sigfd_set, 0);
2907 sigprocmask (SIG_UNBLOCK, &ss, 0);
2908 }
2909 else
2910#endif
2376 signal (w->signum, SIG_DFL); 2911 signal (w->signum, SIG_DFL);
2912 }
2377 2913
2378 EV_FREQUENT_CHECK; 2914 EV_FREQUENT_CHECK;
2379} 2915}
2916
2917#endif
2918
2919#if EV_CHILD_ENABLE
2380 2920
2381void 2921void
2382ev_child_start (EV_P_ ev_child *w) 2922ev_child_start (EV_P_ ev_child *w)
2383{ 2923{
2384#if EV_MULTIPLICITY 2924#if EV_MULTIPLICITY
2385 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2925 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2386#endif 2926#endif
2387 if (expect_false (ev_is_active (w))) 2927 if (expect_false (ev_is_active (w)))
2388 return; 2928 return;
2389 2929
2390 EV_FREQUENT_CHECK; 2930 EV_FREQUENT_CHECK;
2391 2931
2392 ev_start (EV_A_ (W)w, 1); 2932 ev_start (EV_A_ (W)w, 1);
2393 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2933 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2394 2934
2395 EV_FREQUENT_CHECK; 2935 EV_FREQUENT_CHECK;
2396} 2936}
2397 2937
2398void 2938void
… …
2402 if (expect_false (!ev_is_active (w))) 2942 if (expect_false (!ev_is_active (w)))
2403 return; 2943 return;
2404 2944
2405 EV_FREQUENT_CHECK; 2945 EV_FREQUENT_CHECK;
2406 2946
2407 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2947 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2408 ev_stop (EV_A_ (W)w); 2948 ev_stop (EV_A_ (W)w);
2409 2949
2410 EV_FREQUENT_CHECK; 2950 EV_FREQUENT_CHECK;
2411} 2951}
2952
2953#endif
2412 2954
2413#if EV_STAT_ENABLE 2955#if EV_STAT_ENABLE
2414 2956
2415# ifdef _WIN32 2957# ifdef _WIN32
2416# undef lstat 2958# undef lstat
2417# define lstat(a,b) _stati64 (a,b) 2959# define lstat(a,b) _stati64 (a,b)
2418# endif 2960# endif
2419 2961
2420#define DEF_STAT_INTERVAL 5.0074891 2962#define DEF_STAT_INTERVAL 5.0074891
2963#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2421#define MIN_STAT_INTERVAL 0.1074891 2964#define MIN_STAT_INTERVAL 0.1074891
2422 2965
2423static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2966static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2424 2967
2425#if EV_USE_INOTIFY 2968#if EV_USE_INOTIFY
2426# define EV_INOTIFY_BUFSIZE 8192 2969
2970/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2971# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2427 2972
2428static void noinline 2973static void noinline
2429infy_add (EV_P_ ev_stat *w) 2974infy_add (EV_P_ ev_stat *w)
2430{ 2975{
2431 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); 2976 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);
2432 2977
2433 if (w->wd < 0) 2978 if (w->wd >= 0)
2979 {
2980 struct statfs sfs;
2981
2982 /* now local changes will be tracked by inotify, but remote changes won't */
2983 /* unless the filesystem is known to be local, we therefore still poll */
2984 /* also do poll on <2.6.25, but with normal frequency */
2985
2986 if (!fs_2625)
2987 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2988 else if (!statfs (w->path, &sfs)
2989 && (sfs.f_type == 0x1373 /* devfs */
2990 || sfs.f_type == 0xEF53 /* ext2/3 */
2991 || sfs.f_type == 0x3153464a /* jfs */
2992 || sfs.f_type == 0x52654973 /* reiser3 */
2993 || sfs.f_type == 0x01021994 /* tempfs */
2994 || sfs.f_type == 0x58465342 /* xfs */))
2995 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2996 else
2997 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2434 { 2998 }
2435 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2999 else
3000 {
3001 /* can't use inotify, continue to stat */
3002 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2436 3003
2437 /* monitor some parent directory for speedup hints */ 3004 /* if path is not there, monitor some parent directory for speedup hints */
2438 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3005 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2439 /* but an efficiency issue only */ 3006 /* but an efficiency issue only */
2440 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3007 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2441 { 3008 {
2442 char path [4096]; 3009 char path [4096];
… …
2447 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3014 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2448 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3015 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2449 3016
2450 char *pend = strrchr (path, '/'); 3017 char *pend = strrchr (path, '/');
2451 3018
2452 if (!pend) 3019 if (!pend || pend == path)
2453 break; /* whoops, no '/', complain to your admin */ 3020 break;
2454 3021
2455 *pend = 0; 3022 *pend = 0;
2456 w->wd = inotify_add_watch (fs_fd, path, mask); 3023 w->wd = inotify_add_watch (fs_fd, path, mask);
2457 } 3024 }
2458 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3025 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2459 } 3026 }
2460 } 3027 }
2461 else
2462 todo, on nfs etc., we need to poll every 60s or so
2463 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2464 3028
2465 if (w->wd >= 0) 3029 if (w->wd >= 0)
2466 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3030 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3031
3032 /* now re-arm timer, if required */
3033 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3034 ev_timer_again (EV_A_ &w->timer);
3035 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2467} 3036}
2468 3037
2469static void noinline 3038static void noinline
2470infy_del (EV_P_ ev_stat *w) 3039infy_del (EV_P_ ev_stat *w)
2471{ 3040{
… …
2474 3043
2475 if (wd < 0) 3044 if (wd < 0)
2476 return; 3045 return;
2477 3046
2478 w->wd = -2; 3047 w->wd = -2;
2479 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3048 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2480 wlist_del (&fs_hash [slot].head, (WL)w); 3049 wlist_del (&fs_hash [slot].head, (WL)w);
2481 3050
2482 /* remove this watcher, if others are watching it, they will rearm */ 3051 /* remove this watcher, if others are watching it, they will rearm */
2483 inotify_rm_watch (fs_fd, wd); 3052 inotify_rm_watch (fs_fd, wd);
2484} 3053}
… …
2486static void noinline 3055static void noinline
2487infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3056infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2488{ 3057{
2489 if (slot < 0) 3058 if (slot < 0)
2490 /* overflow, need to check for all hash slots */ 3059 /* overflow, need to check for all hash slots */
2491 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3060 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2492 infy_wd (EV_A_ slot, wd, ev); 3061 infy_wd (EV_A_ slot, wd, ev);
2493 else 3062 else
2494 { 3063 {
2495 WL w_; 3064 WL w_;
2496 3065
2497 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3066 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2498 { 3067 {
2499 ev_stat *w = (ev_stat *)w_; 3068 ev_stat *w = (ev_stat *)w_;
2500 w_ = w_->next; /* lets us remove this watcher and all before it */ 3069 w_ = w_->next; /* lets us remove this watcher and all before it */
2501 3070
2502 if (w->wd == wd || wd == -1) 3071 if (w->wd == wd || wd == -1)
2503 { 3072 {
2504 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3073 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2505 { 3074 {
3075 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2506 w->wd = -1; 3076 w->wd = -1;
2507 infy_add (EV_A_ w); /* re-add, no matter what */ 3077 infy_add (EV_A_ w); /* re-add, no matter what */
2508 } 3078 }
2509 3079
2510 stat_timer_cb (EV_A_ &w->timer, 0); 3080 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2515 3085
2516static void 3086static void
2517infy_cb (EV_P_ ev_io *w, int revents) 3087infy_cb (EV_P_ ev_io *w, int revents)
2518{ 3088{
2519 char buf [EV_INOTIFY_BUFSIZE]; 3089 char buf [EV_INOTIFY_BUFSIZE];
2520 struct inotify_event *ev = (struct inotify_event *)buf;
2521 int ofs; 3090 int ofs;
2522 int len = read (fs_fd, buf, sizeof (buf)); 3091 int len = read (fs_fd, buf, sizeof (buf));
2523 3092
2524 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3093 for (ofs = 0; ofs < len; )
3094 {
3095 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2525 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3096 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3097 ofs += sizeof (struct inotify_event) + ev->len;
3098 }
2526} 3099}
2527 3100
2528void inline_size 3101inline_size void
2529infy_init (EV_P) 3102ev_check_2625 (EV_P)
2530{ 3103{
2531 if (fs_fd != -2)
2532 return;
2533
2534 /* kernels < 2.6.25 are borked 3104 /* kernels < 2.6.25 are borked
2535 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3105 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2536 */ 3106 */
2537 { 3107 if (ev_linux_version () < 0x020619)
2538 struct utsname buf; 3108 return;
2539 int major, minor, micro;
2540 3109
3110 fs_2625 = 1;
3111}
3112
3113inline_size int
3114infy_newfd (void)
3115{
3116#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3117 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3118 if (fd >= 0)
3119 return fd;
3120#endif
3121 return inotify_init ();
3122}
3123
3124inline_size void
3125infy_init (EV_P)
3126{
3127 if (fs_fd != -2)
3128 return;
3129
2541 fs_fd = -1; 3130 fs_fd = -1;
2542 3131
2543 if (uname (&buf)) 3132 ev_check_2625 (EV_A);
2544 return;
2545 3133
2546 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2547 return;
2548
2549 if (major < 2
2550 || (major == 2 && minor < 6)
2551 || (major == 2 && minor == 6 && micro < 25))
2552 return;
2553 }
2554
2555 fs_fd = inotify_init (); 3134 fs_fd = infy_newfd ();
2556 3135
2557 if (fs_fd >= 0) 3136 if (fs_fd >= 0)
2558 { 3137 {
3138 fd_intern (fs_fd);
2559 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3139 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2560 ev_set_priority (&fs_w, EV_MAXPRI); 3140 ev_set_priority (&fs_w, EV_MAXPRI);
2561 ev_io_start (EV_A_ &fs_w); 3141 ev_io_start (EV_A_ &fs_w);
3142 ev_unref (EV_A);
2562 } 3143 }
2563} 3144}
2564 3145
2565void inline_size 3146inline_size void
2566infy_fork (EV_P) 3147infy_fork (EV_P)
2567{ 3148{
2568 int slot; 3149 int slot;
2569 3150
2570 if (fs_fd < 0) 3151 if (fs_fd < 0)
2571 return; 3152 return;
2572 3153
3154 ev_ref (EV_A);
3155 ev_io_stop (EV_A_ &fs_w);
2573 close (fs_fd); 3156 close (fs_fd);
2574 fs_fd = inotify_init (); 3157 fs_fd = infy_newfd ();
2575 3158
3159 if (fs_fd >= 0)
3160 {
3161 fd_intern (fs_fd);
3162 ev_io_set (&fs_w, fs_fd, EV_READ);
3163 ev_io_start (EV_A_ &fs_w);
3164 ev_unref (EV_A);
3165 }
3166
2576 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3167 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2577 { 3168 {
2578 WL w_ = fs_hash [slot].head; 3169 WL w_ = fs_hash [slot].head;
2579 fs_hash [slot].head = 0; 3170 fs_hash [slot].head = 0;
2580 3171
2581 while (w_) 3172 while (w_)
… …
2586 w->wd = -1; 3177 w->wd = -1;
2587 3178
2588 if (fs_fd >= 0) 3179 if (fs_fd >= 0)
2589 infy_add (EV_A_ w); /* re-add, no matter what */ 3180 infy_add (EV_A_ w); /* re-add, no matter what */
2590 else 3181 else
3182 {
3183 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3184 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2591 ev_timer_start (EV_A_ &w->timer); 3185 ev_timer_again (EV_A_ &w->timer);
3186 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3187 }
2592 } 3188 }
2593 } 3189 }
2594} 3190}
2595 3191
2596#endif 3192#endif
… …
2613static void noinline 3209static void noinline
2614stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3210stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2615{ 3211{
2616 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3212 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2617 3213
2618 /* we copy this here each the time so that */ 3214 ev_statdata prev = w->attr;
2619 /* prev has the old value when the callback gets invoked */
2620 w->prev = w->attr;
2621 ev_stat_stat (EV_A_ w); 3215 ev_stat_stat (EV_A_ w);
2622 3216
2623 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3217 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2624 if ( 3218 if (
2625 w->prev.st_dev != w->attr.st_dev 3219 prev.st_dev != w->attr.st_dev
2626 || w->prev.st_ino != w->attr.st_ino 3220 || prev.st_ino != w->attr.st_ino
2627 || w->prev.st_mode != w->attr.st_mode 3221 || prev.st_mode != w->attr.st_mode
2628 || w->prev.st_nlink != w->attr.st_nlink 3222 || prev.st_nlink != w->attr.st_nlink
2629 || w->prev.st_uid != w->attr.st_uid 3223 || prev.st_uid != w->attr.st_uid
2630 || w->prev.st_gid != w->attr.st_gid 3224 || prev.st_gid != w->attr.st_gid
2631 || w->prev.st_rdev != w->attr.st_rdev 3225 || prev.st_rdev != w->attr.st_rdev
2632 || w->prev.st_size != w->attr.st_size 3226 || prev.st_size != w->attr.st_size
2633 || w->prev.st_atime != w->attr.st_atime 3227 || prev.st_atime != w->attr.st_atime
2634 || w->prev.st_mtime != w->attr.st_mtime 3228 || prev.st_mtime != w->attr.st_mtime
2635 || w->prev.st_ctime != w->attr.st_ctime 3229 || prev.st_ctime != w->attr.st_ctime
2636 ) { 3230 ) {
3231 /* we only update w->prev on actual differences */
3232 /* in case we test more often than invoke the callback, */
3233 /* to ensure that prev is always different to attr */
3234 w->prev = prev;
3235
2637 #if EV_USE_INOTIFY 3236 #if EV_USE_INOTIFY
2638 if (fs_fd >= 0) 3237 if (fs_fd >= 0)
2639 { 3238 {
2640 infy_del (EV_A_ w); 3239 infy_del (EV_A_ w);
2641 infy_add (EV_A_ w); 3240 infy_add (EV_A_ w);
… …
2651ev_stat_start (EV_P_ ev_stat *w) 3250ev_stat_start (EV_P_ ev_stat *w)
2652{ 3251{
2653 if (expect_false (ev_is_active (w))) 3252 if (expect_false (ev_is_active (w)))
2654 return; 3253 return;
2655 3254
2656 /* since we use memcmp, we need to clear any padding data etc. */
2657 memset (&w->prev, 0, sizeof (ev_statdata));
2658 memset (&w->attr, 0, sizeof (ev_statdata));
2659
2660 ev_stat_stat (EV_A_ w); 3255 ev_stat_stat (EV_A_ w);
2661 3256
3257 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2662 if (w->interval < MIN_STAT_INTERVAL) 3258 w->interval = MIN_STAT_INTERVAL;
2663 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2664 3259
2665 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3260 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2666 ev_set_priority (&w->timer, ev_priority (w)); 3261 ev_set_priority (&w->timer, ev_priority (w));
2667 3262
2668#if EV_USE_INOTIFY 3263#if EV_USE_INOTIFY
2669 infy_init (EV_A); 3264 infy_init (EV_A);
2670 3265
2671 if (fs_fd >= 0) 3266 if (fs_fd >= 0)
2672 infy_add (EV_A_ w); 3267 infy_add (EV_A_ w);
2673 else 3268 else
2674#endif 3269#endif
3270 {
2675 ev_timer_start (EV_A_ &w->timer); 3271 ev_timer_again (EV_A_ &w->timer);
3272 ev_unref (EV_A);
3273 }
2676 3274
2677 ev_start (EV_A_ (W)w, 1); 3275 ev_start (EV_A_ (W)w, 1);
2678 3276
2679 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2680} 3278}
… …
2689 EV_FREQUENT_CHECK; 3287 EV_FREQUENT_CHECK;
2690 3288
2691#if EV_USE_INOTIFY 3289#if EV_USE_INOTIFY
2692 infy_del (EV_A_ w); 3290 infy_del (EV_A_ w);
2693#endif 3291#endif
3292
3293 if (ev_is_active (&w->timer))
3294 {
3295 ev_ref (EV_A);
2694 ev_timer_stop (EV_A_ &w->timer); 3296 ev_timer_stop (EV_A_ &w->timer);
3297 }
2695 3298
2696 ev_stop (EV_A_ (W)w); 3299 ev_stop (EV_A_ (W)w);
2697 3300
2698 EV_FREQUENT_CHECK; 3301 EV_FREQUENT_CHECK;
2699} 3302}
… …
2744 3347
2745 EV_FREQUENT_CHECK; 3348 EV_FREQUENT_CHECK;
2746} 3349}
2747#endif 3350#endif
2748 3351
3352#if EV_PREPARE_ENABLE
2749void 3353void
2750ev_prepare_start (EV_P_ ev_prepare *w) 3354ev_prepare_start (EV_P_ ev_prepare *w)
2751{ 3355{
2752 if (expect_false (ev_is_active (w))) 3356 if (expect_false (ev_is_active (w)))
2753 return; 3357 return;
… …
2779 3383
2780 ev_stop (EV_A_ (W)w); 3384 ev_stop (EV_A_ (W)w);
2781 3385
2782 EV_FREQUENT_CHECK; 3386 EV_FREQUENT_CHECK;
2783} 3387}
3388#endif
2784 3389
3390#if EV_CHECK_ENABLE
2785void 3391void
2786ev_check_start (EV_P_ ev_check *w) 3392ev_check_start (EV_P_ ev_check *w)
2787{ 3393{
2788 if (expect_false (ev_is_active (w))) 3394 if (expect_false (ev_is_active (w)))
2789 return; 3395 return;
… …
2815 3421
2816 ev_stop (EV_A_ (W)w); 3422 ev_stop (EV_A_ (W)w);
2817 3423
2818 EV_FREQUENT_CHECK; 3424 EV_FREQUENT_CHECK;
2819} 3425}
3426#endif
2820 3427
2821#if EV_EMBED_ENABLE 3428#if EV_EMBED_ENABLE
2822void noinline 3429void noinline
2823ev_embed_sweep (EV_P_ ev_embed *w) 3430ev_embed_sweep (EV_P_ ev_embed *w)
2824{ 3431{
2825 ev_loop (w->other, EVLOOP_NONBLOCK); 3432 ev_run (w->other, EVRUN_NOWAIT);
2826} 3433}
2827 3434
2828static void 3435static void
2829embed_io_cb (EV_P_ ev_io *io, int revents) 3436embed_io_cb (EV_P_ ev_io *io, int revents)
2830{ 3437{
2831 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3438 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2832 3439
2833 if (ev_cb (w)) 3440 if (ev_cb (w))
2834 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3441 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2835 else 3442 else
2836 ev_loop (w->other, EVLOOP_NONBLOCK); 3443 ev_run (w->other, EVRUN_NOWAIT);
2837} 3444}
2838 3445
2839static void 3446static void
2840embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3447embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2841{ 3448{
2842 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3449 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2843 3450
2844 { 3451 {
2845 struct ev_loop *loop = w->other; 3452 EV_P = w->other;
2846 3453
2847 while (fdchangecnt) 3454 while (fdchangecnt)
2848 { 3455 {
2849 fd_reify (EV_A); 3456 fd_reify (EV_A);
2850 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3457 ev_run (EV_A_ EVRUN_NOWAIT);
2851 } 3458 }
2852 } 3459 }
2853} 3460}
2854 3461
2855static void 3462static void
2856embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3463embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2857{ 3464{
2858 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3465 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2859 3466
3467 ev_embed_stop (EV_A_ w);
3468
2860 { 3469 {
2861 struct ev_loop *loop = w->other; 3470 EV_P = w->other;
2862 3471
2863 ev_loop_fork (EV_A); 3472 ev_loop_fork (EV_A);
3473 ev_run (EV_A_ EVRUN_NOWAIT);
2864 } 3474 }
3475
3476 ev_embed_start (EV_A_ w);
2865} 3477}
2866 3478
2867#if 0 3479#if 0
2868static void 3480static void
2869embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3481embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2877{ 3489{
2878 if (expect_false (ev_is_active (w))) 3490 if (expect_false (ev_is_active (w)))
2879 return; 3491 return;
2880 3492
2881 { 3493 {
2882 struct ev_loop *loop = w->other; 3494 EV_P = w->other;
2883 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3495 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2884 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3496 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2885 } 3497 }
2886 3498
2887 EV_FREQUENT_CHECK; 3499 EV_FREQUENT_CHECK;
2888 3500
… …
2914 3526
2915 ev_io_stop (EV_A_ &w->io); 3527 ev_io_stop (EV_A_ &w->io);
2916 ev_prepare_stop (EV_A_ &w->prepare); 3528 ev_prepare_stop (EV_A_ &w->prepare);
2917 ev_fork_stop (EV_A_ &w->fork); 3529 ev_fork_stop (EV_A_ &w->fork);
2918 3530
3531 ev_stop (EV_A_ (W)w);
3532
2919 EV_FREQUENT_CHECK; 3533 EV_FREQUENT_CHECK;
2920} 3534}
2921#endif 3535#endif
2922 3536
2923#if EV_FORK_ENABLE 3537#if EV_FORK_ENABLE
… …
2956 3570
2957 EV_FREQUENT_CHECK; 3571 EV_FREQUENT_CHECK;
2958} 3572}
2959#endif 3573#endif
2960 3574
2961#if EV_ASYNC_ENABLE 3575#if EV_CLEANUP_ENABLE
2962void 3576void
2963ev_async_start (EV_P_ ev_async *w) 3577ev_cleanup_start (EV_P_ ev_cleanup *w)
2964{ 3578{
2965 if (expect_false (ev_is_active (w))) 3579 if (expect_false (ev_is_active (w)))
2966 return; 3580 return;
3581
3582 EV_FREQUENT_CHECK;
3583
3584 ev_start (EV_A_ (W)w, ++cleanupcnt);
3585 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3586 cleanups [cleanupcnt - 1] = w;
3587
3588 EV_FREQUENT_CHECK;
3589}
3590
3591void
3592ev_cleanup_stop (EV_P_ ev_cleanup *w)
3593{
3594 clear_pending (EV_A_ (W)w);
3595 if (expect_false (!ev_is_active (w)))
3596 return;
3597
3598 EV_FREQUENT_CHECK;
3599
3600 {
3601 int active = ev_active (w);
3602
3603 cleanups [active - 1] = cleanups [--cleanupcnt];
3604 ev_active (cleanups [active - 1]) = active;
3605 }
3606
3607 ev_stop (EV_A_ (W)w);
3608
3609 EV_FREQUENT_CHECK;
3610}
3611#endif
3612
3613#if EV_ASYNC_ENABLE
3614void
3615ev_async_start (EV_P_ ev_async *w)
3616{
3617 if (expect_false (ev_is_active (w)))
3618 return;
3619
3620 w->sent = 0;
2967 3621
2968 evpipe_init (EV_A); 3622 evpipe_init (EV_A);
2969 3623
2970 EV_FREQUENT_CHECK; 3624 EV_FREQUENT_CHECK;
2971 3625
… …
2999 3653
3000void 3654void
3001ev_async_send (EV_P_ ev_async *w) 3655ev_async_send (EV_P_ ev_async *w)
3002{ 3656{
3003 w->sent = 1; 3657 w->sent = 1;
3004 evpipe_write (EV_A_ &gotasync); 3658 evpipe_write (EV_A_ &async_pending);
3005} 3659}
3006#endif 3660#endif
3007 3661
3008/*****************************************************************************/ 3662/*****************************************************************************/
3009 3663
… …
3049{ 3703{
3050 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3704 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3051 3705
3052 if (expect_false (!once)) 3706 if (expect_false (!once))
3053 { 3707 {
3054 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3708 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3055 return; 3709 return;
3056 } 3710 }
3057 3711
3058 once->cb = cb; 3712 once->cb = cb;
3059 once->arg = arg; 3713 once->arg = arg;
… …
3071 ev_timer_set (&once->to, timeout, 0.); 3725 ev_timer_set (&once->to, timeout, 0.);
3072 ev_timer_start (EV_A_ &once->to); 3726 ev_timer_start (EV_A_ &once->to);
3073 } 3727 }
3074} 3728}
3075 3729
3730/*****************************************************************************/
3731
3732#if EV_WALK_ENABLE
3733void
3734ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3735{
3736 int i, j;
3737 ev_watcher_list *wl, *wn;
3738
3739 if (types & (EV_IO | EV_EMBED))
3740 for (i = 0; i < anfdmax; ++i)
3741 for (wl = anfds [i].head; wl; )
3742 {
3743 wn = wl->next;
3744
3745#if EV_EMBED_ENABLE
3746 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3747 {
3748 if (types & EV_EMBED)
3749 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3750 }
3751 else
3752#endif
3753#if EV_USE_INOTIFY
3754 if (ev_cb ((ev_io *)wl) == infy_cb)
3755 ;
3756 else
3757#endif
3758 if ((ev_io *)wl != &pipe_w)
3759 if (types & EV_IO)
3760 cb (EV_A_ EV_IO, wl);
3761
3762 wl = wn;
3763 }
3764
3765 if (types & (EV_TIMER | EV_STAT))
3766 for (i = timercnt + HEAP0; i-- > HEAP0; )
3767#if EV_STAT_ENABLE
3768 /*TODO: timer is not always active*/
3769 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3770 {
3771 if (types & EV_STAT)
3772 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3773 }
3774 else
3775#endif
3776 if (types & EV_TIMER)
3777 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3778
3779#if EV_PERIODIC_ENABLE
3780 if (types & EV_PERIODIC)
3781 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3782 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3783#endif
3784
3785#if EV_IDLE_ENABLE
3786 if (types & EV_IDLE)
3787 for (j = NUMPRI; i--; )
3788 for (i = idlecnt [j]; i--; )
3789 cb (EV_A_ EV_IDLE, idles [j][i]);
3790#endif
3791
3792#if EV_FORK_ENABLE
3793 if (types & EV_FORK)
3794 for (i = forkcnt; i--; )
3795 if (ev_cb (forks [i]) != embed_fork_cb)
3796 cb (EV_A_ EV_FORK, forks [i]);
3797#endif
3798
3799#if EV_ASYNC_ENABLE
3800 if (types & EV_ASYNC)
3801 for (i = asynccnt; i--; )
3802 cb (EV_A_ EV_ASYNC, asyncs [i]);
3803#endif
3804
3805#if EV_PREPARE_ENABLE
3806 if (types & EV_PREPARE)
3807 for (i = preparecnt; i--; )
3808# if EV_EMBED_ENABLE
3809 if (ev_cb (prepares [i]) != embed_prepare_cb)
3810# endif
3811 cb (EV_A_ EV_PREPARE, prepares [i]);
3812#endif
3813
3814#if EV_CHECK_ENABLE
3815 if (types & EV_CHECK)
3816 for (i = checkcnt; i--; )
3817 cb (EV_A_ EV_CHECK, checks [i]);
3818#endif
3819
3820#if EV_SIGNAL_ENABLE
3821 if (types & EV_SIGNAL)
3822 for (i = 0; i < EV_NSIG - 1; ++i)
3823 for (wl = signals [i].head; wl; )
3824 {
3825 wn = wl->next;
3826 cb (EV_A_ EV_SIGNAL, wl);
3827 wl = wn;
3828 }
3829#endif
3830
3831#if EV_CHILD_ENABLE
3832 if (types & EV_CHILD)
3833 for (i = (EV_PID_HASHSIZE); i--; )
3834 for (wl = childs [i]; wl; )
3835 {
3836 wn = wl->next;
3837 cb (EV_A_ EV_CHILD, wl);
3838 wl = wn;
3839 }
3840#endif
3841/* EV_STAT 0x00001000 /* stat data changed */
3842/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3843}
3844#endif
3845
3076#if EV_MULTIPLICITY 3846#if EV_MULTIPLICITY
3077 #include "ev_wrap.h" 3847 #include "ev_wrap.h"
3078#endif 3848#endif
3079 3849
3080#ifdef __cplusplus 3850EV_CPP(})
3081}
3082#endif
3083 3851

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