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Comparing libev/ev.c (file contents):
Revision 1.265 by root, Thu Oct 23 04:56:49 2008 UTC vs.
Revision 1.358 by root, Sun Oct 24 14:44:40 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> 387# include <sys/statfs.h>
292# include <sys/inotify.h> 388# include <sys/inotify.h>
293/* 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 */
294# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 392# define EV_USE_INOTIFY 0
… …
302#endif 398#endif
303 399
304#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
305/* 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 */
306# include <stdint.h> 402# include <stdint.h>
307# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
308extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
309# endif 405# endif
310int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 407# ifdef O_CLOEXEC
312} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
313# 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};
314#endif 436#endif
315 437
316/**/ 438/**/
317 439
318#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 442#else
321# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
322#endif 444#endif
323 445
324/* 446/*
… …
331 */ 453 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
333 455
334#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) */
335#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) */
336/*#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)
337 461
338#if __GNUC__ >= 4 462#if __GNUC__ >= 4
339# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
340# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
341#else 465#else
… …
348 472
349#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
351#define inline_size static inline 475#define inline_size static inline
352 476
353#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
354# 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)
355#else 487#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
361 490
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
364 493
365typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
368 497
369#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
371 500
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
372#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static 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)
376#endif 519#endif
377 520
378#ifdef _WIN32 521#ifdef _WIN32
379# include "ev_win32.c" 522# include "ev_win32.c"
380#endif 523#endif
381 524
382/*****************************************************************************/ 525/*****************************************************************************/
383 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 struct utsname buf;
536 unsigned int v;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
576
384static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
385 578
386void 579void
387ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
388{ 581{
389 syserr_cb = cb; 582 syserr_cb = cb;
390} 583}
391 584
392static void noinline 585static void noinline
393syserr (const char *msg) 586ev_syserr (const char *msg)
394{ 587{
395 if (!msg) 588 if (!msg)
396 msg = "(libev) system error"; 589 msg = "(libev) system error";
397 590
398 if (syserr_cb) 591 if (syserr_cb)
399 syserr_cb (msg); 592 syserr_cb (msg);
400 else 593 else
401 { 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
402 perror (msg); 603 perror (msg);
604#endif
403 abort (); 605 abort ();
404 } 606 }
405} 607}
406 608
407static void * 609static void *
408ev_realloc_emul (void *ptr, long size) 610ev_realloc_emul (void *ptr, long size)
409{ 611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
410 /* some systems, notably openbsd and darwin, fail to properly 615 /* some systems, notably openbsd and darwin, fail to properly
411 * 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
412 * the single unix specification, so work around them here. 617 * the single unix specification, so work around them here.
413 */ 618 */
414 619
415 if (size) 620 if (size)
416 return realloc (ptr, size); 621 return realloc (ptr, size);
417 622
418 free (ptr); 623 free (ptr);
419 return 0; 624 return 0;
625#endif
420} 626}
421 627
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
423 629
424void 630void
… …
432{ 638{
433 ptr = alloc (ptr, size); 639 ptr = alloc (ptr, size);
434 640
435 if (!ptr && size) 641 if (!ptr && size)
436 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
438 abort (); 648 abort ();
439 } 649 }
440 650
441 return ptr; 651 return ptr;
442} 652}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
446 656
447/*****************************************************************************/ 657/*****************************************************************************/
448 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
449typedef struct 663typedef struct
450{ 664{
451 WL head; 665 WL head;
452 unsigned char events; 666 unsigned char events; /* the events watched for */
453 unsigned char reify; 667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454 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 */
455 unsigned char unused; /* currently unused padding */ 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
456#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
457 SOCKET handle; 674 SOCKET handle;
458#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
459} ANFD; 679} ANFD;
460 680
681/* stores the pending event set for a given watcher */
461typedef struct 682typedef struct
462{ 683{
463 W w; 684 W w;
464 int events; 685 int events; /* the pending event set for the given watcher */
465} ANPENDING; 686} ANPENDING;
466 687
467#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
468/* hash table entry per inotify-id */ 689/* hash table entry per inotify-id */
469typedef struct 690typedef struct
… …
472} ANFS; 693} ANFS;
473#endif 694#endif
474 695
475/* Heap Entry */ 696/* Heap Entry */
476#if EV_HEAP_CACHE_AT 697#if EV_HEAP_CACHE_AT
698 /* a heap element */
477 typedef struct { 699 typedef struct {
478 ev_tstamp at; 700 ev_tstamp at;
479 WT w; 701 WT w;
480 } ANHE; 702 } ANHE;
481 703
482 #define ANHE_w(he) (he).w /* access watcher, read-write */ 704 #define ANHE_w(he) (he).w /* access watcher, read-write */
483 #define ANHE_at(he) (he).at /* access cached at, read-only */ 705 #define ANHE_at(he) (he).at /* access cached at, read-only */
484 #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 */
485#else 707#else
708 /* a heap element */
486 typedef WT ANHE; 709 typedef WT ANHE;
487 710
488 #define ANHE_w(he) (he) 711 #define ANHE_w(he) (he)
489 #define ANHE_at(he) (he)->at 712 #define ANHE_at(he) (he)->at
490 #define ANHE_at_cache(he) 713 #define ANHE_at_cache(he)
… …
514 737
515 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
516 739
517#endif 740#endif
518 741
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
519/*****************************************************************************/ 754/*****************************************************************************/
520 755
756#ifndef EV_HAVE_EV_TIME
521ev_tstamp 757ev_tstamp
522ev_time (void) 758ev_time (void)
523{ 759{
524#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
525 struct timespec ts; 763 struct timespec ts;
526 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
527 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
528#else 766 }
767#endif
768
529 struct timeval tv; 769 struct timeval tv;
530 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
531 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
532#endif
533} 772}
773#endif
534 774
535ev_tstamp inline_size 775inline_size ev_tstamp
536get_clock (void) 776get_clock (void)
537{ 777{
538#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
539 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
540 { 780 {
… …
561 if (delay > 0.) 801 if (delay > 0.)
562 { 802 {
563#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
564 struct timespec ts; 804 struct timespec ts;
565 805
566 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
567 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
568
569 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
570#elif defined(_WIN32) 808#elif defined(_WIN32)
571 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
572#else 810#else
573 struct timeval tv; 811 struct timeval tv;
574 812
575 tv.tv_sec = (time_t)delay;
576 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
577
578 /* 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 */
579 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 814 /* something not guaranteed by newer posix versions, but guaranteed */
580 /* by older ones */ 815 /* by older ones */
816 EV_TV_SET (tv, delay);
581 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
582#endif 818#endif
583 } 819 }
584} 820}
585 821
586/*****************************************************************************/ 822/*****************************************************************************/
587 823
588#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 */
589 825
590int 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
591array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
592{ 830{
593 int ncur = cur + 1; 831 int ncur = cur + 1;
594 832
595 do 833 do
… …
636 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
637 } 875 }
638#endif 876#endif
639 877
640#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
641 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
642 880
643/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
644 888
645void noinline 889void noinline
646ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
647{ 891{
648 W w_ = (W)w; 892 W w_ = (W)w;
… …
657 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
658 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
659 } 903 }
660} 904}
661 905
662void 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
663queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
664{ 923{
665 int i; 924 int i;
666 925
667 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
668 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
669} 928}
670 929
671/*****************************************************************************/ 930/*****************************************************************************/
672 931
673void inline_speed 932inline_speed void
674fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
675{ 934{
676 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
677 ev_io *w; 936 ev_io *w;
678 937
679 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)
… …
683 if (ev) 942 if (ev)
684 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
685 } 944 }
686} 945}
687 946
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
688void 958void
689ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
690{ 960{
691 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
692 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
693} 963}
694 964
695void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
696fd_reify (EV_P) 968fd_reify (EV_P)
697{ 969{
698 int i; 970 int i;
699 971
700 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
701 { 973 {
702 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
703 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
704 ev_io *w; 976 ev_io *w;
705 977
706 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
707 980
708 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
709 events |= (unsigned char)w->events;
710 982
711#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
712 if (events) 984 if (o_reify & EV__IOFDSET)
713 { 985 {
714 unsigned long arg; 986 unsigned long arg;
715 #ifdef EV_FD_TO_WIN32_HANDLE
716 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
717 #else
718 anfd->handle = _get_osfhandle (fd);
719 #endif
720 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
721 } 990 }
722#endif 991#endif
723 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
724 { 994 {
725 unsigned char o_events = anfd->events;
726 unsigned char o_reify = anfd->reify;
727
728 anfd->reify = 0;
729 anfd->events = events; 995 anfd->events = 0;
730 996
731 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)
732 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
733 }
734 } 1006 }
735 1007
736 fdchangecnt = 0; 1008 fdchangecnt = 0;
737} 1009}
738 1010
739void inline_size 1011/* something about the given fd changed */
1012inline_size void
740fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
741{ 1014{
742 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
743 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
744 1017
… …
748 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
749 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
750 } 1023 }
751} 1024}
752 1025
753void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
754fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
755{ 1029{
756 ev_io *w; 1030 ev_io *w;
757 1031
758 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
760 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
761 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);
762 } 1036 }
763} 1037}
764 1038
765int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
766fd_valid (int fd) 1041fd_valid (int fd)
767{ 1042{
768#ifdef _WIN32 1043#ifdef _WIN32
769 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
770#else 1045#else
771 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
772#endif 1047#endif
773} 1048}
774 1049
… …
792 1067
793 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
794 if (anfds [fd].events) 1069 if (anfds [fd].events)
795 { 1070 {
796 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
797 return; 1072 break;
798 } 1073 }
799} 1074}
800 1075
801/* 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 */
802static void noinline 1077static void noinline
… …
806 1081
807 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
808 if (anfds [fd].events) 1083 if (anfds [fd].events)
809 { 1084 {
810 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
1086 anfds [fd].emask = 0;
811 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
812 } 1088 }
813} 1089}
814 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
815/*****************************************************************************/ 1105/*****************************************************************************/
816 1106
817/* 1107/*
818 * 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
819 * 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
820 * the branching factor of the d-tree. 1110 * the branching factor of the d-tree.
821 */ 1111 */
822 1112
823/* 1113/*
… …
832#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
833#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
834#define UPHEAP_DONE(p,k) ((p) == (k)) 1124#define UPHEAP_DONE(p,k) ((p) == (k))
835 1125
836/* away from the root */ 1126/* away from the root */
837void inline_speed 1127inline_speed void
838downheap (ANHE *heap, int N, int k) 1128downheap (ANHE *heap, int N, int k)
839{ 1129{
840 ANHE he = heap [k]; 1130 ANHE he = heap [k];
841 ANHE *E = heap + N + HEAP0; 1131 ANHE *E = heap + N + HEAP0;
842 1132
… …
882#define HEAP0 1 1172#define HEAP0 1
883#define HPARENT(k) ((k) >> 1) 1173#define HPARENT(k) ((k) >> 1)
884#define UPHEAP_DONE(p,k) (!(p)) 1174#define UPHEAP_DONE(p,k) (!(p))
885 1175
886/* away from the root */ 1176/* away from the root */
887void inline_speed 1177inline_speed void
888downheap (ANHE *heap, int N, int k) 1178downheap (ANHE *heap, int N, int k)
889{ 1179{
890 ANHE he = heap [k]; 1180 ANHE he = heap [k];
891 1181
892 for (;;) 1182 for (;;)
893 { 1183 {
894 int c = k << 1; 1184 int c = k << 1;
895 1185
896 if (c > N + HEAP0 - 1) 1186 if (c >= N + HEAP0)
897 break; 1187 break;
898 1188
899 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])
900 ? 1 : 0; 1190 ? 1 : 0;
901 1191
… …
912 ev_active (ANHE_w (he)) = k; 1202 ev_active (ANHE_w (he)) = k;
913} 1203}
914#endif 1204#endif
915 1205
916/* towards the root */ 1206/* towards the root */
917void inline_speed 1207inline_speed void
918upheap (ANHE *heap, int k) 1208upheap (ANHE *heap, int k)
919{ 1209{
920 ANHE he = heap [k]; 1210 ANHE he = heap [k];
921 1211
922 for (;;) 1212 for (;;)
… …
933 1223
934 heap [k] = he; 1224 heap [k] = he;
935 ev_active (ANHE_w (he)) = k; 1225 ev_active (ANHE_w (he)) = k;
936} 1226}
937 1227
938void inline_size 1228/* move an element suitably so it is in a correct place */
1229inline_size void
939adjustheap (ANHE *heap, int N, int k) 1230adjustheap (ANHE *heap, int N, int k)
940{ 1231{
941 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)]))
942 upheap (heap, k); 1233 upheap (heap, k);
943 else 1234 else
944 downheap (heap, N, k); 1235 downheap (heap, N, k);
945} 1236}
946 1237
947/* 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 */
948void inline_size 1239inline_size void
949reheap (ANHE *heap, int N) 1240reheap (ANHE *heap, int N)
950{ 1241{
951 int i; 1242 int i;
952 1243
953 /* 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 */
… …
956 upheap (heap, i + HEAP0); 1247 upheap (heap, i + HEAP0);
957} 1248}
958 1249
959/*****************************************************************************/ 1250/*****************************************************************************/
960 1251
1252/* associate signal watchers to a signal signal */
961typedef struct 1253typedef struct
962{ 1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
963 WL head; 1259 WL head;
964 EV_ATOMIC_T gotsig;
965} ANSIG; 1260} ANSIG;
966 1261
967static ANSIG *signals; 1262static ANSIG signals [EV_NSIG - 1];
968static int signalmax;
969
970static EV_ATOMIC_T gotsig;
971 1263
972/*****************************************************************************/ 1264/*****************************************************************************/
973 1265
974void inline_speed 1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
975fd_intern (int fd)
976{
977#ifdef _WIN32
978 unsigned long arg = 1;
979 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
980#else
981 fcntl (fd, F_SETFD, FD_CLOEXEC);
982 fcntl (fd, F_SETFL, O_NONBLOCK);
983#endif
984}
985 1267
986static void noinline 1268static void noinline
987evpipe_init (EV_P) 1269evpipe_init (EV_P)
988{ 1270{
989 if (!ev_is_active (&pipeev)) 1271 if (!ev_is_active (&pipe_w))
990 { 1272 {
991#if EV_USE_EVENTFD 1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
992 if ((evfd = eventfd (0, 0)) >= 0) 1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
993 { 1279 {
994 evpipe [0] = -1; 1280 evpipe [0] = -1;
995 fd_intern (evfd); 1281 fd_intern (evfd); /* doing it twice doesn't hurt */
996 ev_io_set (&pipeev, evfd, EV_READ); 1282 ev_io_set (&pipe_w, evfd, EV_READ);
997 } 1283 }
998 else 1284 else
999#endif 1285# endif
1000 { 1286 {
1001 while (pipe (evpipe)) 1287 while (pipe (evpipe))
1002 syserr ("(libev) error creating signal/async pipe"); 1288 ev_syserr ("(libev) error creating signal/async pipe");
1003 1289
1004 fd_intern (evpipe [0]); 1290 fd_intern (evpipe [0]);
1005 fd_intern (evpipe [1]); 1291 fd_intern (evpipe [1]);
1006 ev_io_set (&pipeev, evpipe [0], EV_READ); 1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1007 } 1293 }
1008 1294
1009 ev_io_start (EV_A_ &pipeev); 1295 ev_io_start (EV_A_ &pipe_w);
1010 ev_unref (EV_A); /* watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1011 } 1297 }
1012} 1298}
1013 1299
1014void inline_size 1300inline_size void
1015evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1016{ 1302{
1017 if (!*flag) 1303 if (!*flag)
1018 { 1304 {
1019 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;
1020 1307
1021 *flag = 1; 1308 *flag = 1;
1022 1309
1023#if EV_USE_EVENTFD 1310#if EV_USE_EVENTFD
1024 if (evfd >= 0) 1311 if (evfd >= 0)
… …
1026 uint64_t counter = 1; 1313 uint64_t counter = 1;
1027 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
1028 } 1315 }
1029 else 1316 else
1030#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. */
1031 write (evpipe [1], &old_errno, 1); 1323 write (evpipe [1], &dummy, 1);
1032 1324
1033 errno = old_errno; 1325 errno = old_errno;
1034 } 1326 }
1035} 1327}
1036 1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
1037static void 1331static void
1038pipecb (EV_P_ ev_io *iow, int revents) 1332pipecb (EV_P_ ev_io *iow, int revents)
1039{ 1333{
1334 int i;
1335
1040#if EV_USE_EVENTFD 1336#if EV_USE_EVENTFD
1041 if (evfd >= 0) 1337 if (evfd >= 0)
1042 { 1338 {
1043 uint64_t counter; 1339 uint64_t counter;
1044 read (evfd, &counter, sizeof (uint64_t)); 1340 read (evfd, &counter, sizeof (uint64_t));
1045 } 1341 }
1046 else 1342 else
1047#endif 1343#endif
1048 { 1344 {
1049 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1050 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
1051 } 1348 }
1052 1349
1053 if (gotsig && ev_is_default_loop (EV_A)) 1350 if (sig_pending)
1054 { 1351 {
1055 int signum; 1352 sig_pending = 0;
1056 gotsig = 0;
1057 1353
1058 for (signum = signalmax; signum--; ) 1354 for (i = EV_NSIG - 1; i--; )
1059 if (signals [signum].gotsig) 1355 if (expect_false (signals [i].pending))
1060 ev_feed_signal_event (EV_A_ signum + 1); 1356 ev_feed_signal_event (EV_A_ i + 1);
1061 } 1357 }
1062 1358
1063#if EV_ASYNC_ENABLE 1359#if EV_ASYNC_ENABLE
1064 if (gotasync) 1360 if (async_pending)
1065 { 1361 {
1066 int i; 1362 async_pending = 0;
1067 gotasync = 0;
1068 1363
1069 for (i = asynccnt; i--; ) 1364 for (i = asynccnt; i--; )
1070 if (asyncs [i]->sent) 1365 if (asyncs [i]->sent)
1071 { 1366 {
1072 asyncs [i]->sent = 0; 1367 asyncs [i]->sent = 0;
… …
1080 1375
1081static void 1376static void
1082ev_sighandler (int signum) 1377ev_sighandler (int signum)
1083{ 1378{
1084#if EV_MULTIPLICITY 1379#if EV_MULTIPLICITY
1085 struct ev_loop *loop = &default_loop_struct; 1380 EV_P = signals [signum - 1].loop;
1086#endif 1381#endif
1087 1382
1088#if _WIN32 1383#ifdef _WIN32
1089 signal (signum, ev_sighandler); 1384 signal (signum, ev_sighandler);
1090#endif 1385#endif
1091 1386
1092 signals [signum - 1].gotsig = 1; 1387 signals [signum - 1].pending = 1;
1093 evpipe_write (EV_A_ &gotsig); 1388 evpipe_write (EV_A_ &sig_pending);
1094} 1389}
1095 1390
1096void noinline 1391void noinline
1097ev_feed_signal_event (EV_P_ int signum) 1392ev_feed_signal_event (EV_P_ int signum)
1098{ 1393{
1099 WL w; 1394 WL w;
1100 1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1101#if EV_MULTIPLICITY 1401#if EV_MULTIPLICITY
1102 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 */
1103#endif 1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1104 1404
1105 --signum; 1405 if (expect_false (signals [signum].loop != EV_A))
1106
1107 if (signum < 0 || signum >= signalmax)
1108 return; 1406 return;
1407#endif
1109 1408
1110 signals [signum].gotsig = 0; 1409 signals [signum].pending = 0;
1111 1410
1112 for (w = signals [signum].head; w; w = w->next) 1411 for (w = signals [signum].head; w; w = w->next)
1113 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1114} 1413}
1115 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
1116/*****************************************************************************/ 1437/*****************************************************************************/
1117 1438
1439#if EV_CHILD_ENABLE
1118static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
1119
1120#ifndef _WIN32
1121 1441
1122static ev_signal childev; 1442static ev_signal childev;
1123 1443
1124#ifndef WIFCONTINUED 1444#ifndef WIFCONTINUED
1125# define WIFCONTINUED(status) 0 1445# define WIFCONTINUED(status) 0
1126#endif 1446#endif
1127 1447
1128void inline_speed 1448/* handle a single child status event */
1449inline_speed void
1129child_reap (EV_P_ int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
1130{ 1451{
1131 ev_child *w; 1452 ev_child *w;
1132 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1133 1454
1134 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)
1135 { 1456 {
1136 if ((w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1137 && (!traced || (w->flags & 1))) 1458 && (!traced || (w->flags & 1)))
1138 { 1459 {
1139 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 */
… …
1146 1467
1147#ifndef WCONTINUED 1468#ifndef WCONTINUED
1148# define WCONTINUED 0 1469# define WCONTINUED 0
1149#endif 1470#endif
1150 1471
1472/* called on sigchld etc., calls waitpid */
1151static void 1473static void
1152childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
1153{ 1475{
1154 int pid, status; 1476 int pid, status;
1155 1477
… …
1163 /* 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 */
1164 /* 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 */
1165 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1166 1488
1167 child_reap (EV_A_ pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1168 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
1169 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 */
1170} 1492}
1171 1493
1172#endif 1494#endif
1173 1495
1174/*****************************************************************************/ 1496/*****************************************************************************/
1175 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1176#if EV_USE_PORT 1501#if EV_USE_PORT
1177# include "ev_port.c" 1502# include "ev_port.c"
1178#endif 1503#endif
1179#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1180# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
1236 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
1237 /* 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 */
1238 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
1239#endif 1564#endif
1240#ifdef __APPLE__ 1565#ifdef __APPLE__
1241 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
1242 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) */
1243#endif 1572#endif
1244 1573
1245 return flags; 1574 return flags;
1246} 1575}
1247 1576
… …
1249ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1250{ 1579{
1251 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1252 1581
1253 /* 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 */
1254 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1255 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1256 1585
1257 return flags; 1586 return flags;
1258} 1587}
1259 1588
1260unsigned int 1589unsigned int
1261ev_backend (EV_P) 1590ev_backend (EV_P)
1262{ 1591{
1263 return backend; 1592 return backend;
1264} 1593}
1265 1594
1595#if EV_FEATURE_API
1266unsigned int 1596unsigned int
1267ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1268{ 1598{
1269 return loop_count; 1599 return loop_count;
1270} 1600}
1271 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
1272void 1608void
1273ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1274{ 1610{
1275 io_blocktime = interval; 1611 io_blocktime = interval;
1276} 1612}
… …
1279ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1280{ 1616{
1281 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1282} 1618}
1283 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 */
1284static void noinline 1645static void noinline
1285loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1286{ 1647{
1287 if (!backend) 1648 if (!backend)
1288 { 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
1289#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1290 { 1662 {
1291 struct timespec ts; 1663 struct timespec ts;
1664
1292 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1293 have_monotonic = 1; 1666 have_monotonic = 1;
1294 } 1667 }
1295#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"));
1296 1680
1297 ev_rt_now = ev_time (); 1681 ev_rt_now = ev_time ();
1298 mn_now = get_clock (); 1682 mn_now = get_clock ();
1299 now_floor = mn_now; 1683 now_floor = mn_now;
1300 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
1301 1688
1302 io_blocktime = 0.; 1689 io_blocktime = 0.;
1303 timeout_blocktime = 0.; 1690 timeout_blocktime = 0.;
1304 backend = 0; 1691 backend = 0;
1305 backend_fd = -1; 1692 backend_fd = -1;
1306 gotasync = 0; 1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1307#if EV_USE_INOTIFY 1697#if EV_USE_INOTIFY
1308 fs_fd = -2; 1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1309#endif 1699#endif
1310 1700#if EV_USE_SIGNALFD
1311 /* pid check not overridable via env */ 1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1312#ifndef _WIN32
1313 if (flags & EVFLAG_FORKCHECK)
1314 curpid = getpid ();
1315#endif 1702#endif
1316
1317 if (!(flags & EVFLAG_NOENV)
1318 && !enable_secure ()
1319 && getenv ("LIBEV_FLAGS"))
1320 flags = atoi (getenv ("LIBEV_FLAGS"));
1321 1703
1322 if (!(flags & 0x0000ffffU)) 1704 if (!(flags & 0x0000ffffU))
1323 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1324 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1325#if EV_USE_PORT 1710#if EV_USE_PORT
1326 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1327#endif 1712#endif
1328#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1329 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1336#endif 1721#endif
1337#if EV_USE_SELECT 1722#if EV_USE_SELECT
1338 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1339#endif 1724#endif
1340 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1341 ev_init (&pipeev, pipecb); 1729 ev_init (&pipe_w, pipecb);
1342 ev_set_priority (&pipeev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1343 } 1732 }
1344} 1733}
1345 1734
1735/* free up a loop structure */
1346static void noinline 1736static void noinline
1347loop_destroy (EV_P) 1737loop_destroy (EV_P)
1348{ 1738{
1349 int i; 1739 int i;
1350 1740
1351 if (ev_is_active (&pipeev)) 1741 if (ev_is_active (&pipe_w))
1352 { 1742 {
1353 ev_ref (EV_A); /* signal watcher */ 1743 /*ev_ref (EV_A);*/
1354 ev_io_stop (EV_A_ &pipeev); 1744 /*ev_io_stop (EV_A_ &pipe_w);*/
1355 1745
1356#if EV_USE_EVENTFD 1746#if EV_USE_EVENTFD
1357 if (evfd >= 0) 1747 if (evfd >= 0)
1358 close (evfd); 1748 close (evfd);
1359#endif 1749#endif
1360 1750
1361 if (evpipe [0] >= 0) 1751 if (evpipe [0] >= 0)
1362 { 1752 {
1363 close (evpipe [0]); 1753 EV_WIN32_CLOSE_FD (evpipe [0]);
1364 close (evpipe [1]); 1754 EV_WIN32_CLOSE_FD (evpipe [1]);
1365 } 1755 }
1366 } 1756 }
1757
1758#if EV_USE_SIGNALFD
1759 if (ev_is_active (&sigfd_w))
1760 close (sigfd);
1761#endif
1367 1762
1368#if EV_USE_INOTIFY 1763#if EV_USE_INOTIFY
1369 if (fs_fd >= 0) 1764 if (fs_fd >= 0)
1370 close (fs_fd); 1765 close (fs_fd);
1371#endif 1766#endif
1372 1767
1373 if (backend_fd >= 0) 1768 if (backend_fd >= 0)
1374 close (backend_fd); 1769 close (backend_fd);
1375 1770
1771#if EV_USE_IOCP
1772 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1773#endif
1376#if EV_USE_PORT 1774#if EV_USE_PORT
1377 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1775 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1378#endif 1776#endif
1379#if EV_USE_KQUEUE 1777#if EV_USE_KQUEUE
1380 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1778 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1395#if EV_IDLE_ENABLE 1793#if EV_IDLE_ENABLE
1396 array_free (idle, [i]); 1794 array_free (idle, [i]);
1397#endif 1795#endif
1398 } 1796 }
1399 1797
1400 ev_free (anfds); anfdmax = 0; 1798 ev_free (anfds); anfds = 0; anfdmax = 0;
1401 1799
1402 /* have to use the microsoft-never-gets-it-right macro */ 1800 /* have to use the microsoft-never-gets-it-right macro */
1801 array_free (rfeed, EMPTY);
1403 array_free (fdchange, EMPTY); 1802 array_free (fdchange, EMPTY);
1404 array_free (timer, EMPTY); 1803 array_free (timer, EMPTY);
1405#if EV_PERIODIC_ENABLE 1804#if EV_PERIODIC_ENABLE
1406 array_free (periodic, EMPTY); 1805 array_free (periodic, EMPTY);
1407#endif 1806#endif
… …
1416 1815
1417 backend = 0; 1816 backend = 0;
1418} 1817}
1419 1818
1420#if EV_USE_INOTIFY 1819#if EV_USE_INOTIFY
1421void inline_size infy_fork (EV_P); 1820inline_size void infy_fork (EV_P);
1422#endif 1821#endif
1423 1822
1424void inline_size 1823inline_size void
1425loop_fork (EV_P) 1824loop_fork (EV_P)
1426{ 1825{
1427#if EV_USE_PORT 1826#if EV_USE_PORT
1428 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1827 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1429#endif 1828#endif
… …
1435#endif 1834#endif
1436#if EV_USE_INOTIFY 1835#if EV_USE_INOTIFY
1437 infy_fork (EV_A); 1836 infy_fork (EV_A);
1438#endif 1837#endif
1439 1838
1440 if (ev_is_active (&pipeev)) 1839 if (ev_is_active (&pipe_w))
1441 { 1840 {
1442 /* this "locks" the handlers against writing to the pipe */ 1841 /* this "locks" the handlers against writing to the pipe */
1443 /* while we modify the fd vars */ 1842 /* while we modify the fd vars */
1444 gotsig = 1; 1843 sig_pending = 1;
1445#if EV_ASYNC_ENABLE 1844#if EV_ASYNC_ENABLE
1446 gotasync = 1; 1845 async_pending = 1;
1447#endif 1846#endif
1448 1847
1449 ev_ref (EV_A); 1848 ev_ref (EV_A);
1450 ev_io_stop (EV_A_ &pipeev); 1849 ev_io_stop (EV_A_ &pipe_w);
1451 1850
1452#if EV_USE_EVENTFD 1851#if EV_USE_EVENTFD
1453 if (evfd >= 0) 1852 if (evfd >= 0)
1454 close (evfd); 1853 close (evfd);
1455#endif 1854#endif
1456 1855
1457 if (evpipe [0] >= 0) 1856 if (evpipe [0] >= 0)
1458 { 1857 {
1459 close (evpipe [0]); 1858 EV_WIN32_CLOSE_FD (evpipe [0]);
1460 close (evpipe [1]); 1859 EV_WIN32_CLOSE_FD (evpipe [1]);
1461 } 1860 }
1462 1861
1862#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1463 evpipe_init (EV_A); 1863 evpipe_init (EV_A);
1464 /* now iterate over everything, in case we missed something */ 1864 /* now iterate over everything, in case we missed something */
1465 pipecb (EV_A_ &pipeev, EV_READ); 1865 pipecb (EV_A_ &pipe_w, EV_READ);
1866#endif
1466 } 1867 }
1467 1868
1468 postfork = 0; 1869 postfork = 0;
1469} 1870}
1470 1871
1471#if EV_MULTIPLICITY 1872#if EV_MULTIPLICITY
1472 1873
1473struct ev_loop * 1874struct ev_loop *
1474ev_loop_new (unsigned int flags) 1875ev_loop_new (unsigned int flags)
1475{ 1876{
1476 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1877 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1477 1878
1478 memset (loop, 0, sizeof (struct ev_loop)); 1879 memset (EV_A, 0, sizeof (struct ev_loop));
1479
1480 loop_init (EV_A_ flags); 1880 loop_init (EV_A_ flags);
1481 1881
1482 if (ev_backend (EV_A)) 1882 if (ev_backend (EV_A))
1483 return loop; 1883 return EV_A;
1484 1884
1485 return 0; 1885 return 0;
1486} 1886}
1487 1887
1488void 1888void
… …
1495void 1895void
1496ev_loop_fork (EV_P) 1896ev_loop_fork (EV_P)
1497{ 1897{
1498 postfork = 1; /* must be in line with ev_default_fork */ 1898 postfork = 1; /* must be in line with ev_default_fork */
1499} 1899}
1900#endif /* multiplicity */
1500 1901
1501#if EV_VERIFY 1902#if EV_VERIFY
1502static void noinline 1903static void noinline
1503verify_watcher (EV_P_ W w) 1904verify_watcher (EV_P_ W w)
1504{ 1905{
1505 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1906 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1506 1907
1507 if (w->pending) 1908 if (w->pending)
1508 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1909 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1509} 1910}
1510 1911
1511static void noinline 1912static void noinline
1512verify_heap (EV_P_ ANHE *heap, int N) 1913verify_heap (EV_P_ ANHE *heap, int N)
1513{ 1914{
1514 int i; 1915 int i;
1515 1916
1516 for (i = HEAP0; i < N + HEAP0; ++i) 1917 for (i = HEAP0; i < N + HEAP0; ++i)
1517 { 1918 {
1518 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1919 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1519 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1920 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1520 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1921 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1521 1922
1522 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1923 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1523 } 1924 }
1524} 1925}
1525 1926
1526static void noinline 1927static void noinline
1527array_verify (EV_P_ W *ws, int cnt) 1928array_verify (EV_P_ W *ws, int cnt)
1528{ 1929{
1529 while (cnt--) 1930 while (cnt--)
1530 { 1931 {
1531 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1932 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1532 verify_watcher (EV_A_ ws [cnt]); 1933 verify_watcher (EV_A_ ws [cnt]);
1533 } 1934 }
1534} 1935}
1535#endif 1936#endif
1536 1937
1938#if EV_FEATURE_API
1537void 1939void
1538ev_loop_verify (EV_P) 1940ev_verify (EV_P)
1539{ 1941{
1540#if EV_VERIFY 1942#if EV_VERIFY
1541 int i; 1943 int i;
1542 WL w; 1944 WL w;
1543 1945
1544 assert (activecnt >= -1); 1946 assert (activecnt >= -1);
1545 1947
1546 assert (fdchangemax >= fdchangecnt); 1948 assert (fdchangemax >= fdchangecnt);
1547 for (i = 0; i < fdchangecnt; ++i) 1949 for (i = 0; i < fdchangecnt; ++i)
1548 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1950 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1549 1951
1550 assert (anfdmax >= 0); 1952 assert (anfdmax >= 0);
1551 for (i = 0; i < anfdmax; ++i) 1953 for (i = 0; i < anfdmax; ++i)
1552 for (w = anfds [i].head; w; w = w->next) 1954 for (w = anfds [i].head; w; w = w->next)
1553 { 1955 {
1554 verify_watcher (EV_A_ (W)w); 1956 verify_watcher (EV_A_ (W)w);
1555 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1957 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1556 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1958 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1557 } 1959 }
1558 1960
1559 assert (timermax >= timercnt); 1961 assert (timermax >= timercnt);
1560 verify_heap (EV_A_ timers, timercnt); 1962 verify_heap (EV_A_ timers, timercnt);
1561 1963
… …
1582#if EV_ASYNC_ENABLE 1984#if EV_ASYNC_ENABLE
1583 assert (asyncmax >= asynccnt); 1985 assert (asyncmax >= asynccnt);
1584 array_verify (EV_A_ (W *)asyncs, asynccnt); 1986 array_verify (EV_A_ (W *)asyncs, asynccnt);
1585#endif 1987#endif
1586 1988
1989#if EV_PREPARE_ENABLE
1587 assert (preparemax >= preparecnt); 1990 assert (preparemax >= preparecnt);
1588 array_verify (EV_A_ (W *)prepares, preparecnt); 1991 array_verify (EV_A_ (W *)prepares, preparecnt);
1992#endif
1589 1993
1994#if EV_CHECK_ENABLE
1590 assert (checkmax >= checkcnt); 1995 assert (checkmax >= checkcnt);
1591 array_verify (EV_A_ (W *)checks, checkcnt); 1996 array_verify (EV_A_ (W *)checks, checkcnt);
1997#endif
1592 1998
1593# if 0 1999# if 0
2000#if EV_CHILD_ENABLE
1594 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2001 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1595 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2002 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2003#endif
1596# endif 2004# endif
1597#endif 2005#endif
1598} 2006}
1599 2007#endif
1600#endif /* multiplicity */
1601 2008
1602#if EV_MULTIPLICITY 2009#if EV_MULTIPLICITY
1603struct ev_loop * 2010struct ev_loop *
1604ev_default_loop_init (unsigned int flags)
1605#else 2011#else
1606int 2012int
2013#endif
1607ev_default_loop (unsigned int flags) 2014ev_default_loop (unsigned int flags)
1608#endif
1609{ 2015{
1610 if (!ev_default_loop_ptr) 2016 if (!ev_default_loop_ptr)
1611 { 2017 {
1612#if EV_MULTIPLICITY 2018#if EV_MULTIPLICITY
1613 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2019 EV_P = ev_default_loop_ptr = &default_loop_struct;
1614#else 2020#else
1615 ev_default_loop_ptr = 1; 2021 ev_default_loop_ptr = 1;
1616#endif 2022#endif
1617 2023
1618 loop_init (EV_A_ flags); 2024 loop_init (EV_A_ flags);
1619 2025
1620 if (ev_backend (EV_A)) 2026 if (ev_backend (EV_A))
1621 { 2027 {
1622#ifndef _WIN32 2028#if EV_CHILD_ENABLE
1623 ev_signal_init (&childev, childcb, SIGCHLD); 2029 ev_signal_init (&childev, childcb, SIGCHLD);
1624 ev_set_priority (&childev, EV_MAXPRI); 2030 ev_set_priority (&childev, EV_MAXPRI);
1625 ev_signal_start (EV_A_ &childev); 2031 ev_signal_start (EV_A_ &childev);
1626 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2032 ev_unref (EV_A); /* child watcher should not keep loop alive */
1627#endif 2033#endif
… …
1635 2041
1636void 2042void
1637ev_default_destroy (void) 2043ev_default_destroy (void)
1638{ 2044{
1639#if EV_MULTIPLICITY 2045#if EV_MULTIPLICITY
1640 struct ev_loop *loop = ev_default_loop_ptr; 2046 EV_P = ev_default_loop_ptr;
1641#endif 2047#endif
1642 2048
1643#ifndef _WIN32 2049 ev_default_loop_ptr = 0;
2050
2051#if EV_CHILD_ENABLE
1644 ev_ref (EV_A); /* child watcher */ 2052 ev_ref (EV_A); /* child watcher */
1645 ev_signal_stop (EV_A_ &childev); 2053 ev_signal_stop (EV_A_ &childev);
1646#endif 2054#endif
1647 2055
1648 loop_destroy (EV_A); 2056 loop_destroy (EV_A);
… …
1650 2058
1651void 2059void
1652ev_default_fork (void) 2060ev_default_fork (void)
1653{ 2061{
1654#if EV_MULTIPLICITY 2062#if EV_MULTIPLICITY
1655 struct ev_loop *loop = ev_default_loop_ptr; 2063 EV_P = ev_default_loop_ptr;
1656#endif 2064#endif
1657 2065
1658 if (backend)
1659 postfork = 1; /* must be in line with ev_loop_fork */ 2066 postfork = 1; /* must be in line with ev_loop_fork */
1660} 2067}
1661 2068
1662/*****************************************************************************/ 2069/*****************************************************************************/
1663 2070
1664void 2071void
1665ev_invoke (EV_P_ void *w, int revents) 2072ev_invoke (EV_P_ void *w, int revents)
1666{ 2073{
1667 EV_CB_INVOKE ((W)w, revents); 2074 EV_CB_INVOKE ((W)w, revents);
1668} 2075}
1669 2076
1670void inline_speed 2077unsigned int
1671call_pending (EV_P) 2078ev_pending_count (EV_P)
2079{
2080 int pri;
2081 unsigned int count = 0;
2082
2083 for (pri = NUMPRI; pri--; )
2084 count += pendingcnt [pri];
2085
2086 return count;
2087}
2088
2089void noinline
2090ev_invoke_pending (EV_P)
1672{ 2091{
1673 int pri; 2092 int pri;
1674 2093
1675 for (pri = NUMPRI; pri--; ) 2094 for (pri = NUMPRI; pri--; )
1676 while (pendingcnt [pri]) 2095 while (pendingcnt [pri])
1677 { 2096 {
1678 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2097 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1679 2098
1680 if (expect_true (p->w))
1681 {
1682 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2099 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2100 /* ^ this is no longer true, as pending_w could be here */
1683 2101
1684 p->w->pending = 0; 2102 p->w->pending = 0;
1685 EV_CB_INVOKE (p->w, p->events); 2103 EV_CB_INVOKE (p->w, p->events);
1686 EV_FREQUENT_CHECK; 2104 EV_FREQUENT_CHECK;
1687 }
1688 } 2105 }
1689} 2106}
1690 2107
1691#if EV_IDLE_ENABLE 2108#if EV_IDLE_ENABLE
1692void inline_size 2109/* make idle watchers pending. this handles the "call-idle */
2110/* only when higher priorities are idle" logic */
2111inline_size void
1693idle_reify (EV_P) 2112idle_reify (EV_P)
1694{ 2113{
1695 if (expect_false (idleall)) 2114 if (expect_false (idleall))
1696 { 2115 {
1697 int pri; 2116 int pri;
… …
1709 } 2128 }
1710 } 2129 }
1711} 2130}
1712#endif 2131#endif
1713 2132
1714void inline_size 2133/* make timers pending */
2134inline_size void
1715timers_reify (EV_P) 2135timers_reify (EV_P)
1716{ 2136{
1717 EV_FREQUENT_CHECK; 2137 EV_FREQUENT_CHECK;
1718 2138
1719 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2139 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1720 { 2140 {
1721 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2141 do
1722
1723 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1724
1725 /* first reschedule or stop timer */
1726 if (w->repeat)
1727 { 2142 {
2143 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2144
2145 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2146
2147 /* first reschedule or stop timer */
2148 if (w->repeat)
2149 {
1728 ev_at (w) += w->repeat; 2150 ev_at (w) += w->repeat;
1729 if (ev_at (w) < mn_now) 2151 if (ev_at (w) < mn_now)
1730 ev_at (w) = mn_now; 2152 ev_at (w) = mn_now;
1731 2153
1732 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2154 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1733 2155
1734 ANHE_at_cache (timers [HEAP0]); 2156 ANHE_at_cache (timers [HEAP0]);
1735 downheap (timers, timercnt, HEAP0); 2157 downheap (timers, timercnt, HEAP0);
2158 }
2159 else
2160 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2161
2162 EV_FREQUENT_CHECK;
2163 feed_reverse (EV_A_ (W)w);
1736 } 2164 }
1737 else 2165 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1738 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1739 2166
1740 EV_FREQUENT_CHECK; 2167 feed_reverse_done (EV_A_ EV_TIMER);
1741 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1742 } 2168 }
1743} 2169}
1744 2170
1745#if EV_PERIODIC_ENABLE 2171#if EV_PERIODIC_ENABLE
1746void inline_size 2172/* make periodics pending */
2173inline_size void
1747periodics_reify (EV_P) 2174periodics_reify (EV_P)
1748{ 2175{
1749 EV_FREQUENT_CHECK; 2176 EV_FREQUENT_CHECK;
1750 2177
1751 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2178 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1752 { 2179 {
1753 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2180 int feed_count = 0;
1754 2181
1755 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2182 do
1756
1757 /* first reschedule or stop timer */
1758 if (w->reschedule_cb)
1759 { 2183 {
2184 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2185
2186 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2187
2188 /* first reschedule or stop timer */
2189 if (w->reschedule_cb)
2190 {
1760 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1761 2192
1762 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2193 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1763 2194
1764 ANHE_at_cache (periodics [HEAP0]); 2195 ANHE_at_cache (periodics [HEAP0]);
1765 downheap (periodics, periodiccnt, HEAP0); 2196 downheap (periodics, periodiccnt, HEAP0);
2197 }
2198 else if (w->interval)
2199 {
2200 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2201 /* if next trigger time is not sufficiently in the future, put it there */
2202 /* this might happen because of floating point inexactness */
2203 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2204 {
2205 ev_at (w) += w->interval;
2206
2207 /* if interval is unreasonably low we might still have a time in the past */
2208 /* so correct this. this will make the periodic very inexact, but the user */
2209 /* has effectively asked to get triggered more often than possible */
2210 if (ev_at (w) < ev_rt_now)
2211 ev_at (w) = ev_rt_now;
2212 }
2213
2214 ANHE_at_cache (periodics [HEAP0]);
2215 downheap (periodics, periodiccnt, HEAP0);
2216 }
2217 else
2218 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2219
2220 EV_FREQUENT_CHECK;
2221 feed_reverse (EV_A_ (W)w);
1766 } 2222 }
1767 else if (w->interval) 2223 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1768 {
1769 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1770 /* if next trigger time is not sufficiently in the future, put it there */
1771 /* this might happen because of floating point inexactness */
1772 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1773 {
1774 ev_at (w) += w->interval;
1775 2224
1776 /* if interval is unreasonably low we might still have a time in the past */
1777 /* so correct this. this will make the periodic very inexact, but the user */
1778 /* has effectively asked to get triggered more often than possible */
1779 if (ev_at (w) < ev_rt_now)
1780 ev_at (w) = ev_rt_now;
1781 }
1782
1783 ANHE_at_cache (periodics [HEAP0]);
1784 downheap (periodics, periodiccnt, HEAP0);
1785 }
1786 else
1787 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1788
1789 EV_FREQUENT_CHECK;
1790 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2225 feed_reverse_done (EV_A_ EV_PERIODIC);
1791 } 2226 }
1792} 2227}
1793 2228
2229/* simply recalculate all periodics */
2230/* TODO: maybe ensure that at least one event happens when jumping forward? */
1794static void noinline 2231static void noinline
1795periodics_reschedule (EV_P) 2232periodics_reschedule (EV_P)
1796{ 2233{
1797 int i; 2234 int i;
1798 2235
… …
1811 2248
1812 reheap (periodics, periodiccnt); 2249 reheap (periodics, periodiccnt);
1813} 2250}
1814#endif 2251#endif
1815 2252
1816void inline_speed 2253/* adjust all timers by a given offset */
2254static void noinline
2255timers_reschedule (EV_P_ ev_tstamp adjust)
2256{
2257 int i;
2258
2259 for (i = 0; i < timercnt; ++i)
2260 {
2261 ANHE *he = timers + i + HEAP0;
2262 ANHE_w (*he)->at += adjust;
2263 ANHE_at_cache (*he);
2264 }
2265}
2266
2267/* fetch new monotonic and realtime times from the kernel */
2268/* also detect if there was a timejump, and act accordingly */
2269inline_speed void
1817time_update (EV_P_ ev_tstamp max_block) 2270time_update (EV_P_ ev_tstamp max_block)
1818{ 2271{
1819 int i;
1820
1821#if EV_USE_MONOTONIC 2272#if EV_USE_MONOTONIC
1822 if (expect_true (have_monotonic)) 2273 if (expect_true (have_monotonic))
1823 { 2274 {
2275 int i;
1824 ev_tstamp odiff = rtmn_diff; 2276 ev_tstamp odiff = rtmn_diff;
1825 2277
1826 mn_now = get_clock (); 2278 mn_now = get_clock ();
1827 2279
1828 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2280 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1854 ev_rt_now = ev_time (); 2306 ev_rt_now = ev_time ();
1855 mn_now = get_clock (); 2307 mn_now = get_clock ();
1856 now_floor = mn_now; 2308 now_floor = mn_now;
1857 } 2309 }
1858 2310
2311 /* no timer adjustment, as the monotonic clock doesn't jump */
2312 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1859# if EV_PERIODIC_ENABLE 2313# if EV_PERIODIC_ENABLE
1860 periodics_reschedule (EV_A); 2314 periodics_reschedule (EV_A);
1861# endif 2315# endif
1862 /* no timer adjustment, as the monotonic clock doesn't jump */
1863 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1864 } 2316 }
1865 else 2317 else
1866#endif 2318#endif
1867 { 2319 {
1868 ev_rt_now = ev_time (); 2320 ev_rt_now = ev_time ();
1869 2321
1870 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2322 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1871 { 2323 {
2324 /* adjust timers. this is easy, as the offset is the same for all of them */
2325 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1872#if EV_PERIODIC_ENABLE 2326#if EV_PERIODIC_ENABLE
1873 periodics_reschedule (EV_A); 2327 periodics_reschedule (EV_A);
1874#endif 2328#endif
1875 /* adjust timers. this is easy, as the offset is the same for all of them */
1876 for (i = 0; i < timercnt; ++i)
1877 {
1878 ANHE *he = timers + i + HEAP0;
1879 ANHE_w (*he)->at += ev_rt_now - mn_now;
1880 ANHE_at_cache (*he);
1881 }
1882 } 2329 }
1883 2330
1884 mn_now = ev_rt_now; 2331 mn_now = ev_rt_now;
1885 } 2332 }
1886} 2333}
1887 2334
1888void 2335void
1889ev_ref (EV_P)
1890{
1891 ++activecnt;
1892}
1893
1894void
1895ev_unref (EV_P)
1896{
1897 --activecnt;
1898}
1899
1900void
1901ev_now_update (EV_P)
1902{
1903 time_update (EV_A_ 1e100);
1904}
1905
1906static int loop_done;
1907
1908void
1909ev_loop (EV_P_ int flags) 2336ev_run (EV_P_ int flags)
1910{ 2337{
2338#if EV_FEATURE_API
2339 ++loop_depth;
2340#endif
2341
2342 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2343
1911 loop_done = EVUNLOOP_CANCEL; 2344 loop_done = EVBREAK_CANCEL;
1912 2345
1913 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2346 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1914 2347
1915 do 2348 do
1916 { 2349 {
1917#if EV_VERIFY >= 2 2350#if EV_VERIFY >= 2
1918 ev_loop_verify (EV_A); 2351 ev_verify (EV_A);
1919#endif 2352#endif
1920 2353
1921#ifndef _WIN32 2354#ifndef _WIN32
1922 if (expect_false (curpid)) /* penalise the forking check even more */ 2355 if (expect_false (curpid)) /* penalise the forking check even more */
1923 if (expect_false (getpid () != curpid)) 2356 if (expect_false (getpid () != curpid))
… …
1931 /* we might have forked, so queue fork handlers */ 2364 /* we might have forked, so queue fork handlers */
1932 if (expect_false (postfork)) 2365 if (expect_false (postfork))
1933 if (forkcnt) 2366 if (forkcnt)
1934 { 2367 {
1935 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2368 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1936 call_pending (EV_A); 2369 EV_INVOKE_PENDING;
1937 } 2370 }
1938#endif 2371#endif
1939 2372
2373#if EV_PREPARE_ENABLE
1940 /* queue prepare watchers (and execute them) */ 2374 /* queue prepare watchers (and execute them) */
1941 if (expect_false (preparecnt)) 2375 if (expect_false (preparecnt))
1942 { 2376 {
1943 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2377 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1944 call_pending (EV_A); 2378 EV_INVOKE_PENDING;
1945 } 2379 }
2380#endif
1946 2381
1947 if (expect_false (!activecnt)) 2382 if (expect_false (loop_done))
1948 break; 2383 break;
1949 2384
1950 /* we might have forked, so reify kernel state if necessary */ 2385 /* we might have forked, so reify kernel state if necessary */
1951 if (expect_false (postfork)) 2386 if (expect_false (postfork))
1952 loop_fork (EV_A); 2387 loop_fork (EV_A);
… …
1957 /* calculate blocking time */ 2392 /* calculate blocking time */
1958 { 2393 {
1959 ev_tstamp waittime = 0.; 2394 ev_tstamp waittime = 0.;
1960 ev_tstamp sleeptime = 0.; 2395 ev_tstamp sleeptime = 0.;
1961 2396
2397 /* remember old timestamp for io_blocktime calculation */
2398 ev_tstamp prev_mn_now = mn_now;
2399
2400 /* update time to cancel out callback processing overhead */
2401 time_update (EV_A_ 1e100);
2402
1962 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2403 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1963 { 2404 {
1964 /* update time to cancel out callback processing overhead */
1965 time_update (EV_A_ 1e100);
1966
1967 waittime = MAX_BLOCKTIME; 2405 waittime = MAX_BLOCKTIME;
1968 2406
1969 if (timercnt) 2407 if (timercnt)
1970 { 2408 {
1971 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2409 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1978 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2416 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1979 if (waittime > to) waittime = to; 2417 if (waittime > to) waittime = to;
1980 } 2418 }
1981#endif 2419#endif
1982 2420
2421 /* don't let timeouts decrease the waittime below timeout_blocktime */
1983 if (expect_false (waittime < timeout_blocktime)) 2422 if (expect_false (waittime < timeout_blocktime))
1984 waittime = timeout_blocktime; 2423 waittime = timeout_blocktime;
1985 2424
1986 sleeptime = waittime - backend_fudge; 2425 /* extra check because io_blocktime is commonly 0 */
1987
1988 if (expect_true (sleeptime > io_blocktime)) 2426 if (expect_false (io_blocktime))
1989 sleeptime = io_blocktime;
1990
1991 if (sleeptime)
1992 { 2427 {
2428 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2429
2430 if (sleeptime > waittime - backend_fudge)
2431 sleeptime = waittime - backend_fudge;
2432
2433 if (expect_true (sleeptime > 0.))
2434 {
1993 ev_sleep (sleeptime); 2435 ev_sleep (sleeptime);
1994 waittime -= sleeptime; 2436 waittime -= sleeptime;
2437 }
1995 } 2438 }
1996 } 2439 }
1997 2440
2441#if EV_FEATURE_API
1998 ++loop_count; 2442 ++loop_count;
2443#endif
2444 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1999 backend_poll (EV_A_ waittime); 2445 backend_poll (EV_A_ waittime);
2446 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2000 2447
2001 /* update ev_rt_now, do magic */ 2448 /* update ev_rt_now, do magic */
2002 time_update (EV_A_ waittime + sleeptime); 2449 time_update (EV_A_ waittime + sleeptime);
2003 } 2450 }
2004 2451
… …
2011#if EV_IDLE_ENABLE 2458#if EV_IDLE_ENABLE
2012 /* queue idle watchers unless other events are pending */ 2459 /* queue idle watchers unless other events are pending */
2013 idle_reify (EV_A); 2460 idle_reify (EV_A);
2014#endif 2461#endif
2015 2462
2463#if EV_CHECK_ENABLE
2016 /* queue check watchers, to be executed first */ 2464 /* queue check watchers, to be executed first */
2017 if (expect_false (checkcnt)) 2465 if (expect_false (checkcnt))
2018 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2466 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2467#endif
2019 2468
2020 call_pending (EV_A); 2469 EV_INVOKE_PENDING;
2021 } 2470 }
2022 while (expect_true ( 2471 while (expect_true (
2023 activecnt 2472 activecnt
2024 && !loop_done 2473 && !loop_done
2025 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2474 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2026 )); 2475 ));
2027 2476
2028 if (loop_done == EVUNLOOP_ONE) 2477 if (loop_done == EVBREAK_ONE)
2029 loop_done = EVUNLOOP_CANCEL; 2478 loop_done = EVBREAK_CANCEL;
2030}
2031 2479
2480#if EV_FEATURE_API
2481 --loop_depth;
2482#endif
2483}
2484
2032void 2485void
2033ev_unloop (EV_P_ int how) 2486ev_break (EV_P_ int how)
2034{ 2487{
2035 loop_done = how; 2488 loop_done = how;
2036} 2489}
2037 2490
2491void
2492ev_ref (EV_P)
2493{
2494 ++activecnt;
2495}
2496
2497void
2498ev_unref (EV_P)
2499{
2500 --activecnt;
2501}
2502
2503void
2504ev_now_update (EV_P)
2505{
2506 time_update (EV_A_ 1e100);
2507}
2508
2509void
2510ev_suspend (EV_P)
2511{
2512 ev_now_update (EV_A);
2513}
2514
2515void
2516ev_resume (EV_P)
2517{
2518 ev_tstamp mn_prev = mn_now;
2519
2520 ev_now_update (EV_A);
2521 timers_reschedule (EV_A_ mn_now - mn_prev);
2522#if EV_PERIODIC_ENABLE
2523 /* TODO: really do this? */
2524 periodics_reschedule (EV_A);
2525#endif
2526}
2527
2038/*****************************************************************************/ 2528/*****************************************************************************/
2529/* singly-linked list management, used when the expected list length is short */
2039 2530
2040void inline_size 2531inline_size void
2041wlist_add (WL *head, WL elem) 2532wlist_add (WL *head, WL elem)
2042{ 2533{
2043 elem->next = *head; 2534 elem->next = *head;
2044 *head = elem; 2535 *head = elem;
2045} 2536}
2046 2537
2047void inline_size 2538inline_size void
2048wlist_del (WL *head, WL elem) 2539wlist_del (WL *head, WL elem)
2049{ 2540{
2050 while (*head) 2541 while (*head)
2051 { 2542 {
2052 if (*head == elem) 2543 if (expect_true (*head == elem))
2053 { 2544 {
2054 *head = elem->next; 2545 *head = elem->next;
2055 return; 2546 break;
2056 } 2547 }
2057 2548
2058 head = &(*head)->next; 2549 head = &(*head)->next;
2059 } 2550 }
2060} 2551}
2061 2552
2062void inline_speed 2553/* internal, faster, version of ev_clear_pending */
2554inline_speed void
2063clear_pending (EV_P_ W w) 2555clear_pending (EV_P_ W w)
2064{ 2556{
2065 if (w->pending) 2557 if (w->pending)
2066 { 2558 {
2067 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2559 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2068 w->pending = 0; 2560 w->pending = 0;
2069 } 2561 }
2070} 2562}
2071 2563
2072int 2564int
… …
2076 int pending = w_->pending; 2568 int pending = w_->pending;
2077 2569
2078 if (expect_true (pending)) 2570 if (expect_true (pending))
2079 { 2571 {
2080 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2572 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2573 p->w = (W)&pending_w;
2081 w_->pending = 0; 2574 w_->pending = 0;
2082 p->w = 0;
2083 return p->events; 2575 return p->events;
2084 } 2576 }
2085 else 2577 else
2086 return 0; 2578 return 0;
2087} 2579}
2088 2580
2089void inline_size 2581inline_size void
2090pri_adjust (EV_P_ W w) 2582pri_adjust (EV_P_ W w)
2091{ 2583{
2092 int pri = w->priority; 2584 int pri = ev_priority (w);
2093 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2585 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2094 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2586 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2095 w->priority = pri; 2587 ev_set_priority (w, pri);
2096} 2588}
2097 2589
2098void inline_speed 2590inline_speed void
2099ev_start (EV_P_ W w, int active) 2591ev_start (EV_P_ W w, int active)
2100{ 2592{
2101 pri_adjust (EV_A_ w); 2593 pri_adjust (EV_A_ w);
2102 w->active = active; 2594 w->active = active;
2103 ev_ref (EV_A); 2595 ev_ref (EV_A);
2104} 2596}
2105 2597
2106void inline_size 2598inline_size void
2107ev_stop (EV_P_ W w) 2599ev_stop (EV_P_ W w)
2108{ 2600{
2109 ev_unref (EV_A); 2601 ev_unref (EV_A);
2110 w->active = 0; 2602 w->active = 0;
2111} 2603}
… …
2118 int fd = w->fd; 2610 int fd = w->fd;
2119 2611
2120 if (expect_false (ev_is_active (w))) 2612 if (expect_false (ev_is_active (w)))
2121 return; 2613 return;
2122 2614
2123 assert (("ev_io_start called with negative fd", fd >= 0)); 2615 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2124 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2616 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2125 2617
2126 EV_FREQUENT_CHECK; 2618 EV_FREQUENT_CHECK;
2127 2619
2128 ev_start (EV_A_ (W)w, 1); 2620 ev_start (EV_A_ (W)w, 1);
2129 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2621 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2130 wlist_add (&anfds[fd].head, (WL)w); 2622 wlist_add (&anfds[fd].head, (WL)w);
2131 2623
2132 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2624 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2133 w->events &= ~EV_IOFDSET; 2625 w->events &= ~EV__IOFDSET;
2134 2626
2135 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
2136} 2628}
2137 2629
2138void noinline 2630void noinline
… …
2140{ 2632{
2141 clear_pending (EV_A_ (W)w); 2633 clear_pending (EV_A_ (W)w);
2142 if (expect_false (!ev_is_active (w))) 2634 if (expect_false (!ev_is_active (w)))
2143 return; 2635 return;
2144 2636
2145 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2637 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2146 2638
2147 EV_FREQUENT_CHECK; 2639 EV_FREQUENT_CHECK;
2148 2640
2149 wlist_del (&anfds[w->fd].head, (WL)w); 2641 wlist_del (&anfds[w->fd].head, (WL)w);
2150 ev_stop (EV_A_ (W)w); 2642 ev_stop (EV_A_ (W)w);
2151 2643
2152 fd_change (EV_A_ w->fd, 1); 2644 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2153 2645
2154 EV_FREQUENT_CHECK; 2646 EV_FREQUENT_CHECK;
2155} 2647}
2156 2648
2157void noinline 2649void noinline
… …
2160 if (expect_false (ev_is_active (w))) 2652 if (expect_false (ev_is_active (w)))
2161 return; 2653 return;
2162 2654
2163 ev_at (w) += mn_now; 2655 ev_at (w) += mn_now;
2164 2656
2165 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2657 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2166 2658
2167 EV_FREQUENT_CHECK; 2659 EV_FREQUENT_CHECK;
2168 2660
2169 ++timercnt; 2661 ++timercnt;
2170 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2662 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2173 ANHE_at_cache (timers [ev_active (w)]); 2665 ANHE_at_cache (timers [ev_active (w)]);
2174 upheap (timers, ev_active (w)); 2666 upheap (timers, ev_active (w));
2175 2667
2176 EV_FREQUENT_CHECK; 2668 EV_FREQUENT_CHECK;
2177 2669
2178 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2670 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2179} 2671}
2180 2672
2181void noinline 2673void noinline
2182ev_timer_stop (EV_P_ ev_timer *w) 2674ev_timer_stop (EV_P_ ev_timer *w)
2183{ 2675{
… …
2188 EV_FREQUENT_CHECK; 2680 EV_FREQUENT_CHECK;
2189 2681
2190 { 2682 {
2191 int active = ev_active (w); 2683 int active = ev_active (w);
2192 2684
2193 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2685 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2194 2686
2195 --timercnt; 2687 --timercnt;
2196 2688
2197 if (expect_true (active < timercnt + HEAP0)) 2689 if (expect_true (active < timercnt + HEAP0))
2198 { 2690 {
2199 timers [active] = timers [timercnt + HEAP0]; 2691 timers [active] = timers [timercnt + HEAP0];
2200 adjustheap (timers, timercnt, active); 2692 adjustheap (timers, timercnt, active);
2201 } 2693 }
2202 } 2694 }
2203 2695
2204 EV_FREQUENT_CHECK;
2205
2206 ev_at (w) -= mn_now; 2696 ev_at (w) -= mn_now;
2207 2697
2208 ev_stop (EV_A_ (W)w); 2698 ev_stop (EV_A_ (W)w);
2699
2700 EV_FREQUENT_CHECK;
2209} 2701}
2210 2702
2211void noinline 2703void noinline
2212ev_timer_again (EV_P_ ev_timer *w) 2704ev_timer_again (EV_P_ ev_timer *w)
2213{ 2705{
… …
2231 } 2723 }
2232 2724
2233 EV_FREQUENT_CHECK; 2725 EV_FREQUENT_CHECK;
2234} 2726}
2235 2727
2728ev_tstamp
2729ev_timer_remaining (EV_P_ ev_timer *w)
2730{
2731 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2732}
2733
2236#if EV_PERIODIC_ENABLE 2734#if EV_PERIODIC_ENABLE
2237void noinline 2735void noinline
2238ev_periodic_start (EV_P_ ev_periodic *w) 2736ev_periodic_start (EV_P_ ev_periodic *w)
2239{ 2737{
2240 if (expect_false (ev_is_active (w))) 2738 if (expect_false (ev_is_active (w)))
… …
2242 2740
2243 if (w->reschedule_cb) 2741 if (w->reschedule_cb)
2244 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2742 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2245 else if (w->interval) 2743 else if (w->interval)
2246 { 2744 {
2247 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2745 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2248 /* this formula differs from the one in periodic_reify because we do not always round up */ 2746 /* this formula differs from the one in periodic_reify because we do not always round up */
2249 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2747 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2250 } 2748 }
2251 else 2749 else
2252 ev_at (w) = w->offset; 2750 ev_at (w) = w->offset;
… …
2260 ANHE_at_cache (periodics [ev_active (w)]); 2758 ANHE_at_cache (periodics [ev_active (w)]);
2261 upheap (periodics, ev_active (w)); 2759 upheap (periodics, ev_active (w));
2262 2760
2263 EV_FREQUENT_CHECK; 2761 EV_FREQUENT_CHECK;
2264 2762
2265 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2763 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2266} 2764}
2267 2765
2268void noinline 2766void noinline
2269ev_periodic_stop (EV_P_ ev_periodic *w) 2767ev_periodic_stop (EV_P_ ev_periodic *w)
2270{ 2768{
… …
2275 EV_FREQUENT_CHECK; 2773 EV_FREQUENT_CHECK;
2276 2774
2277 { 2775 {
2278 int active = ev_active (w); 2776 int active = ev_active (w);
2279 2777
2280 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2778 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2281 2779
2282 --periodiccnt; 2780 --periodiccnt;
2283 2781
2284 if (expect_true (active < periodiccnt + HEAP0)) 2782 if (expect_true (active < periodiccnt + HEAP0))
2285 { 2783 {
2286 periodics [active] = periodics [periodiccnt + HEAP0]; 2784 periodics [active] = periodics [periodiccnt + HEAP0];
2287 adjustheap (periodics, periodiccnt, active); 2785 adjustheap (periodics, periodiccnt, active);
2288 } 2786 }
2289 } 2787 }
2290 2788
2291 EV_FREQUENT_CHECK;
2292
2293 ev_stop (EV_A_ (W)w); 2789 ev_stop (EV_A_ (W)w);
2790
2791 EV_FREQUENT_CHECK;
2294} 2792}
2295 2793
2296void noinline 2794void noinline
2297ev_periodic_again (EV_P_ ev_periodic *w) 2795ev_periodic_again (EV_P_ ev_periodic *w)
2298{ 2796{
… …
2304 2802
2305#ifndef SA_RESTART 2803#ifndef SA_RESTART
2306# define SA_RESTART 0 2804# define SA_RESTART 0
2307#endif 2805#endif
2308 2806
2807#if EV_SIGNAL_ENABLE
2808
2309void noinline 2809void noinline
2310ev_signal_start (EV_P_ ev_signal *w) 2810ev_signal_start (EV_P_ ev_signal *w)
2311{ 2811{
2312#if EV_MULTIPLICITY
2313 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2314#endif
2315 if (expect_false (ev_is_active (w))) 2812 if (expect_false (ev_is_active (w)))
2316 return; 2813 return;
2317 2814
2318 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2815 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2319 2816
2320 evpipe_init (EV_A); 2817#if EV_MULTIPLICITY
2818 assert (("libev: a signal must not be attached to two different loops",
2819 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2321 2820
2322 EV_FREQUENT_CHECK; 2821 signals [w->signum - 1].loop = EV_A;
2822#endif
2323 2823
2824 EV_FREQUENT_CHECK;
2825
2826#if EV_USE_SIGNALFD
2827 if (sigfd == -2)
2324 { 2828 {
2325#ifndef _WIN32 2829 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2326 sigset_t full, prev; 2830 if (sigfd < 0 && errno == EINVAL)
2327 sigfillset (&full); 2831 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2328 sigprocmask (SIG_SETMASK, &full, &prev);
2329#endif
2330 2832
2331 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2833 if (sigfd >= 0)
2834 {
2835 fd_intern (sigfd); /* doing it twice will not hurt */
2332 2836
2333#ifndef _WIN32 2837 sigemptyset (&sigfd_set);
2334 sigprocmask (SIG_SETMASK, &prev, 0); 2838
2335#endif 2839 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2840 ev_set_priority (&sigfd_w, EV_MAXPRI);
2841 ev_io_start (EV_A_ &sigfd_w);
2842 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2843 }
2336 } 2844 }
2845
2846 if (sigfd >= 0)
2847 {
2848 /* TODO: check .head */
2849 sigaddset (&sigfd_set, w->signum);
2850 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2851
2852 signalfd (sigfd, &sigfd_set, 0);
2853 }
2854#endif
2337 2855
2338 ev_start (EV_A_ (W)w, 1); 2856 ev_start (EV_A_ (W)w, 1);
2339 wlist_add (&signals [w->signum - 1].head, (WL)w); 2857 wlist_add (&signals [w->signum - 1].head, (WL)w);
2340 2858
2341 if (!((WL)w)->next) 2859 if (!((WL)w)->next)
2860# if EV_USE_SIGNALFD
2861 if (sigfd < 0) /*TODO*/
2862# endif
2342 { 2863 {
2343#if _WIN32 2864# ifdef _WIN32
2865 evpipe_init (EV_A);
2866
2344 signal (w->signum, ev_sighandler); 2867 signal (w->signum, ev_sighandler);
2345#else 2868# else
2346 struct sigaction sa; 2869 struct sigaction sa;
2870
2871 evpipe_init (EV_A);
2872
2347 sa.sa_handler = ev_sighandler; 2873 sa.sa_handler = ev_sighandler;
2348 sigfillset (&sa.sa_mask); 2874 sigfillset (&sa.sa_mask);
2349 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2875 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2350 sigaction (w->signum, &sa, 0); 2876 sigaction (w->signum, &sa, 0);
2877
2878 sigemptyset (&sa.sa_mask);
2879 sigaddset (&sa.sa_mask, w->signum);
2880 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2351#endif 2881#endif
2352 } 2882 }
2353 2883
2354 EV_FREQUENT_CHECK; 2884 EV_FREQUENT_CHECK;
2355} 2885}
2356 2886
2357void noinline 2887void noinline
… …
2365 2895
2366 wlist_del (&signals [w->signum - 1].head, (WL)w); 2896 wlist_del (&signals [w->signum - 1].head, (WL)w);
2367 ev_stop (EV_A_ (W)w); 2897 ev_stop (EV_A_ (W)w);
2368 2898
2369 if (!signals [w->signum - 1].head) 2899 if (!signals [w->signum - 1].head)
2900 {
2901#if EV_MULTIPLICITY
2902 signals [w->signum - 1].loop = 0; /* unattach from signal */
2903#endif
2904#if EV_USE_SIGNALFD
2905 if (sigfd >= 0)
2906 {
2907 sigset_t ss;
2908
2909 sigemptyset (&ss);
2910 sigaddset (&ss, w->signum);
2911 sigdelset (&sigfd_set, w->signum);
2912
2913 signalfd (sigfd, &sigfd_set, 0);
2914 sigprocmask (SIG_UNBLOCK, &ss, 0);
2915 }
2916 else
2917#endif
2370 signal (w->signum, SIG_DFL); 2918 signal (w->signum, SIG_DFL);
2919 }
2371 2920
2372 EV_FREQUENT_CHECK; 2921 EV_FREQUENT_CHECK;
2373} 2922}
2923
2924#endif
2925
2926#if EV_CHILD_ENABLE
2374 2927
2375void 2928void
2376ev_child_start (EV_P_ ev_child *w) 2929ev_child_start (EV_P_ ev_child *w)
2377{ 2930{
2378#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
2379 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2932 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2380#endif 2933#endif
2381 if (expect_false (ev_is_active (w))) 2934 if (expect_false (ev_is_active (w)))
2382 return; 2935 return;
2383 2936
2384 EV_FREQUENT_CHECK; 2937 EV_FREQUENT_CHECK;
2385 2938
2386 ev_start (EV_A_ (W)w, 1); 2939 ev_start (EV_A_ (W)w, 1);
2387 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2940 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2388 2941
2389 EV_FREQUENT_CHECK; 2942 EV_FREQUENT_CHECK;
2390} 2943}
2391 2944
2392void 2945void
… …
2396 if (expect_false (!ev_is_active (w))) 2949 if (expect_false (!ev_is_active (w)))
2397 return; 2950 return;
2398 2951
2399 EV_FREQUENT_CHECK; 2952 EV_FREQUENT_CHECK;
2400 2953
2401 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2954 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2402 ev_stop (EV_A_ (W)w); 2955 ev_stop (EV_A_ (W)w);
2403 2956
2404 EV_FREQUENT_CHECK; 2957 EV_FREQUENT_CHECK;
2405} 2958}
2959
2960#endif
2406 2961
2407#if EV_STAT_ENABLE 2962#if EV_STAT_ENABLE
2408 2963
2409# ifdef _WIN32 2964# ifdef _WIN32
2410# undef lstat 2965# undef lstat
2411# define lstat(a,b) _stati64 (a,b) 2966# define lstat(a,b) _stati64 (a,b)
2412# endif 2967# endif
2413 2968
2414#define DEF_STAT_INTERVAL 5.0074891 2969#define DEF_STAT_INTERVAL 5.0074891
2970#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2415#define MIN_STAT_INTERVAL 0.1074891 2971#define MIN_STAT_INTERVAL 0.1074891
2416 2972
2417static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2973static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2418 2974
2419#if EV_USE_INOTIFY 2975#if EV_USE_INOTIFY
2420# define EV_INOTIFY_BUFSIZE 8192 2976
2977/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2978# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2421 2979
2422static void noinline 2980static void noinline
2423infy_add (EV_P_ ev_stat *w) 2981infy_add (EV_P_ ev_stat *w)
2424{ 2982{
2425 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); 2983 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);
2426 2984
2427 if (w->wd < 0) 2985 if (w->wd >= 0)
2986 {
2987 struct statfs sfs;
2988
2989 /* now local changes will be tracked by inotify, but remote changes won't */
2990 /* unless the filesystem is known to be local, we therefore still poll */
2991 /* also do poll on <2.6.25, but with normal frequency */
2992
2993 if (!fs_2625)
2994 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2995 else if (!statfs (w->path, &sfs)
2996 && (sfs.f_type == 0x1373 /* devfs */
2997 || sfs.f_type == 0xEF53 /* ext2/3 */
2998 || sfs.f_type == 0x3153464a /* jfs */
2999 || sfs.f_type == 0x52654973 /* reiser3 */
3000 || sfs.f_type == 0x01021994 /* tempfs */
3001 || sfs.f_type == 0x58465342 /* xfs */))
3002 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3003 else
3004 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2428 { 3005 }
2429 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3006 else
3007 {
3008 /* can't use inotify, continue to stat */
3009 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2430 3010
2431 /* monitor some parent directory for speedup hints */ 3011 /* if path is not there, monitor some parent directory for speedup hints */
2432 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3012 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2433 /* but an efficiency issue only */ 3013 /* but an efficiency issue only */
2434 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3014 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2435 { 3015 {
2436 char path [4096]; 3016 char path [4096];
2437 strcpy (path, w->path); 3017 strcpy (path, w->path);
… …
2441 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3021 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2442 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3022 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2443 3023
2444 char *pend = strrchr (path, '/'); 3024 char *pend = strrchr (path, '/');
2445 3025
2446 if (!pend) 3026 if (!pend || pend == path)
2447 break; /* whoops, no '/', complain to your admin */ 3027 break;
2448 3028
2449 *pend = 0; 3029 *pend = 0;
2450 w->wd = inotify_add_watch (fs_fd, path, mask); 3030 w->wd = inotify_add_watch (fs_fd, path, mask);
2451 } 3031 }
2452 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3032 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2453 } 3033 }
2454 } 3034 }
2455 else
2456 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2457 3035
2458 if (w->wd >= 0) 3036 if (w->wd >= 0)
2459 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3037 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3038
3039 /* now re-arm timer, if required */
3040 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3041 ev_timer_again (EV_A_ &w->timer);
3042 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2460} 3043}
2461 3044
2462static void noinline 3045static void noinline
2463infy_del (EV_P_ ev_stat *w) 3046infy_del (EV_P_ ev_stat *w)
2464{ 3047{
… …
2467 3050
2468 if (wd < 0) 3051 if (wd < 0)
2469 return; 3052 return;
2470 3053
2471 w->wd = -2; 3054 w->wd = -2;
2472 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3055 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2473 wlist_del (&fs_hash [slot].head, (WL)w); 3056 wlist_del (&fs_hash [slot].head, (WL)w);
2474 3057
2475 /* remove this watcher, if others are watching it, they will rearm */ 3058 /* remove this watcher, if others are watching it, they will rearm */
2476 inotify_rm_watch (fs_fd, wd); 3059 inotify_rm_watch (fs_fd, wd);
2477} 3060}
… …
2479static void noinline 3062static void noinline
2480infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3063infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2481{ 3064{
2482 if (slot < 0) 3065 if (slot < 0)
2483 /* overflow, need to check for all hash slots */ 3066 /* overflow, need to check for all hash slots */
2484 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3067 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2485 infy_wd (EV_A_ slot, wd, ev); 3068 infy_wd (EV_A_ slot, wd, ev);
2486 else 3069 else
2487 { 3070 {
2488 WL w_; 3071 WL w_;
2489 3072
2490 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3073 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2491 { 3074 {
2492 ev_stat *w = (ev_stat *)w_; 3075 ev_stat *w = (ev_stat *)w_;
2493 w_ = w_->next; /* lets us remove this watcher and all before it */ 3076 w_ = w_->next; /* lets us remove this watcher and all before it */
2494 3077
2495 if (w->wd == wd || wd == -1) 3078 if (w->wd == wd || wd == -1)
2496 { 3079 {
2497 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3080 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2498 { 3081 {
3082 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2499 w->wd = -1; 3083 w->wd = -1;
2500 infy_add (EV_A_ w); /* re-add, no matter what */ 3084 infy_add (EV_A_ w); /* re-add, no matter what */
2501 } 3085 }
2502 3086
2503 stat_timer_cb (EV_A_ &w->timer, 0); 3087 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2508 3092
2509static void 3093static void
2510infy_cb (EV_P_ ev_io *w, int revents) 3094infy_cb (EV_P_ ev_io *w, int revents)
2511{ 3095{
2512 char buf [EV_INOTIFY_BUFSIZE]; 3096 char buf [EV_INOTIFY_BUFSIZE];
2513 struct inotify_event *ev = (struct inotify_event *)buf;
2514 int ofs; 3097 int ofs;
2515 int len = read (fs_fd, buf, sizeof (buf)); 3098 int len = read (fs_fd, buf, sizeof (buf));
2516 3099
2517 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3100 for (ofs = 0; ofs < len; )
3101 {
3102 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2518 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3103 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3104 ofs += sizeof (struct inotify_event) + ev->len;
3105 }
2519} 3106}
2520 3107
2521void inline_size 3108inline_size void
2522infy_init (EV_P) 3109ev_check_2625 (EV_P)
2523{ 3110{
2524 if (fs_fd != -2)
2525 return;
2526
2527 /* kernels < 2.6.25 are borked 3111 /* kernels < 2.6.25 are borked
2528 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3112 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2529 */ 3113 */
2530 { 3114 if (ev_linux_version () < 0x020619)
2531 struct utsname buf; 3115 return;
2532 int major, minor, micro;
2533 3116
3117 fs_2625 = 1;
3118}
3119
3120inline_size int
3121infy_newfd (void)
3122{
3123#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3124 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3125 if (fd >= 0)
3126 return fd;
3127#endif
3128 return inotify_init ();
3129}
3130
3131inline_size void
3132infy_init (EV_P)
3133{
3134 if (fs_fd != -2)
3135 return;
3136
2534 fs_fd = -1; 3137 fs_fd = -1;
2535 3138
2536 if (uname (&buf)) 3139 ev_check_2625 (EV_A);
2537 return;
2538 3140
2539 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2540 return;
2541
2542 if (major < 2
2543 || (major == 2 && minor < 6)
2544 || (major == 2 && minor == 6 && micro < 25))
2545 return;
2546 }
2547
2548 fs_fd = inotify_init (); 3141 fs_fd = infy_newfd ();
2549 3142
2550 if (fs_fd >= 0) 3143 if (fs_fd >= 0)
2551 { 3144 {
3145 fd_intern (fs_fd);
2552 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3146 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2553 ev_set_priority (&fs_w, EV_MAXPRI); 3147 ev_set_priority (&fs_w, EV_MAXPRI);
2554 ev_io_start (EV_A_ &fs_w); 3148 ev_io_start (EV_A_ &fs_w);
3149 ev_unref (EV_A);
2555 } 3150 }
2556} 3151}
2557 3152
2558void inline_size 3153inline_size void
2559infy_fork (EV_P) 3154infy_fork (EV_P)
2560{ 3155{
2561 int slot; 3156 int slot;
2562 3157
2563 if (fs_fd < 0) 3158 if (fs_fd < 0)
2564 return; 3159 return;
2565 3160
3161 ev_ref (EV_A);
3162 ev_io_stop (EV_A_ &fs_w);
2566 close (fs_fd); 3163 close (fs_fd);
2567 fs_fd = inotify_init (); 3164 fs_fd = infy_newfd ();
2568 3165
3166 if (fs_fd >= 0)
3167 {
3168 fd_intern (fs_fd);
3169 ev_io_set (&fs_w, fs_fd, EV_READ);
3170 ev_io_start (EV_A_ &fs_w);
3171 ev_unref (EV_A);
3172 }
3173
2569 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3174 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2570 { 3175 {
2571 WL w_ = fs_hash [slot].head; 3176 WL w_ = fs_hash [slot].head;
2572 fs_hash [slot].head = 0; 3177 fs_hash [slot].head = 0;
2573 3178
2574 while (w_) 3179 while (w_)
… …
2579 w->wd = -1; 3184 w->wd = -1;
2580 3185
2581 if (fs_fd >= 0) 3186 if (fs_fd >= 0)
2582 infy_add (EV_A_ w); /* re-add, no matter what */ 3187 infy_add (EV_A_ w); /* re-add, no matter what */
2583 else 3188 else
3189 {
3190 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3191 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2584 ev_timer_start (EV_A_ &w->timer); 3192 ev_timer_again (EV_A_ &w->timer);
3193 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3194 }
2585 } 3195 }
2586 } 3196 }
2587} 3197}
2588 3198
2589#endif 3199#endif
… …
2606static void noinline 3216static void noinline
2607stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3217stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2608{ 3218{
2609 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3219 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2610 3220
2611 /* we copy this here each the time so that */ 3221 ev_statdata prev = w->attr;
2612 /* prev has the old value when the callback gets invoked */
2613 w->prev = w->attr;
2614 ev_stat_stat (EV_A_ w); 3222 ev_stat_stat (EV_A_ w);
2615 3223
2616 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3224 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2617 if ( 3225 if (
2618 w->prev.st_dev != w->attr.st_dev 3226 prev.st_dev != w->attr.st_dev
2619 || w->prev.st_ino != w->attr.st_ino 3227 || prev.st_ino != w->attr.st_ino
2620 || w->prev.st_mode != w->attr.st_mode 3228 || prev.st_mode != w->attr.st_mode
2621 || w->prev.st_nlink != w->attr.st_nlink 3229 || prev.st_nlink != w->attr.st_nlink
2622 || w->prev.st_uid != w->attr.st_uid 3230 || prev.st_uid != w->attr.st_uid
2623 || w->prev.st_gid != w->attr.st_gid 3231 || prev.st_gid != w->attr.st_gid
2624 || w->prev.st_rdev != w->attr.st_rdev 3232 || prev.st_rdev != w->attr.st_rdev
2625 || w->prev.st_size != w->attr.st_size 3233 || prev.st_size != w->attr.st_size
2626 || w->prev.st_atime != w->attr.st_atime 3234 || prev.st_atime != w->attr.st_atime
2627 || w->prev.st_mtime != w->attr.st_mtime 3235 || prev.st_mtime != w->attr.st_mtime
2628 || w->prev.st_ctime != w->attr.st_ctime 3236 || prev.st_ctime != w->attr.st_ctime
2629 ) { 3237 ) {
3238 /* we only update w->prev on actual differences */
3239 /* in case we test more often than invoke the callback, */
3240 /* to ensure that prev is always different to attr */
3241 w->prev = prev;
3242
2630 #if EV_USE_INOTIFY 3243 #if EV_USE_INOTIFY
2631 if (fs_fd >= 0) 3244 if (fs_fd >= 0)
2632 { 3245 {
2633 infy_del (EV_A_ w); 3246 infy_del (EV_A_ w);
2634 infy_add (EV_A_ w); 3247 infy_add (EV_A_ w);
… …
2644ev_stat_start (EV_P_ ev_stat *w) 3257ev_stat_start (EV_P_ ev_stat *w)
2645{ 3258{
2646 if (expect_false (ev_is_active (w))) 3259 if (expect_false (ev_is_active (w)))
2647 return; 3260 return;
2648 3261
2649 /* since we use memcmp, we need to clear any padding data etc. */
2650 memset (&w->prev, 0, sizeof (ev_statdata));
2651 memset (&w->attr, 0, sizeof (ev_statdata));
2652
2653 ev_stat_stat (EV_A_ w); 3262 ev_stat_stat (EV_A_ w);
2654 3263
3264 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2655 if (w->interval < MIN_STAT_INTERVAL) 3265 w->interval = MIN_STAT_INTERVAL;
2656 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2657 3266
2658 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3267 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2659 ev_set_priority (&w->timer, ev_priority (w)); 3268 ev_set_priority (&w->timer, ev_priority (w));
2660 3269
2661#if EV_USE_INOTIFY 3270#if EV_USE_INOTIFY
2662 infy_init (EV_A); 3271 infy_init (EV_A);
2663 3272
2664 if (fs_fd >= 0) 3273 if (fs_fd >= 0)
2665 infy_add (EV_A_ w); 3274 infy_add (EV_A_ w);
2666 else 3275 else
2667#endif 3276#endif
3277 {
2668 ev_timer_start (EV_A_ &w->timer); 3278 ev_timer_again (EV_A_ &w->timer);
3279 ev_unref (EV_A);
3280 }
2669 3281
2670 ev_start (EV_A_ (W)w, 1); 3282 ev_start (EV_A_ (W)w, 1);
2671 3283
2672 EV_FREQUENT_CHECK; 3284 EV_FREQUENT_CHECK;
2673} 3285}
… …
2682 EV_FREQUENT_CHECK; 3294 EV_FREQUENT_CHECK;
2683 3295
2684#if EV_USE_INOTIFY 3296#if EV_USE_INOTIFY
2685 infy_del (EV_A_ w); 3297 infy_del (EV_A_ w);
2686#endif 3298#endif
3299
3300 if (ev_is_active (&w->timer))
3301 {
3302 ev_ref (EV_A);
2687 ev_timer_stop (EV_A_ &w->timer); 3303 ev_timer_stop (EV_A_ &w->timer);
3304 }
2688 3305
2689 ev_stop (EV_A_ (W)w); 3306 ev_stop (EV_A_ (W)w);
2690 3307
2691 EV_FREQUENT_CHECK; 3308 EV_FREQUENT_CHECK;
2692} 3309}
… …
2737 3354
2738 EV_FREQUENT_CHECK; 3355 EV_FREQUENT_CHECK;
2739} 3356}
2740#endif 3357#endif
2741 3358
3359#if EV_PREPARE_ENABLE
2742void 3360void
2743ev_prepare_start (EV_P_ ev_prepare *w) 3361ev_prepare_start (EV_P_ ev_prepare *w)
2744{ 3362{
2745 if (expect_false (ev_is_active (w))) 3363 if (expect_false (ev_is_active (w)))
2746 return; 3364 return;
… …
2772 3390
2773 ev_stop (EV_A_ (W)w); 3391 ev_stop (EV_A_ (W)w);
2774 3392
2775 EV_FREQUENT_CHECK; 3393 EV_FREQUENT_CHECK;
2776} 3394}
3395#endif
2777 3396
3397#if EV_CHECK_ENABLE
2778void 3398void
2779ev_check_start (EV_P_ ev_check *w) 3399ev_check_start (EV_P_ ev_check *w)
2780{ 3400{
2781 if (expect_false (ev_is_active (w))) 3401 if (expect_false (ev_is_active (w)))
2782 return; 3402 return;
… …
2808 3428
2809 ev_stop (EV_A_ (W)w); 3429 ev_stop (EV_A_ (W)w);
2810 3430
2811 EV_FREQUENT_CHECK; 3431 EV_FREQUENT_CHECK;
2812} 3432}
3433#endif
2813 3434
2814#if EV_EMBED_ENABLE 3435#if EV_EMBED_ENABLE
2815void noinline 3436void noinline
2816ev_embed_sweep (EV_P_ ev_embed *w) 3437ev_embed_sweep (EV_P_ ev_embed *w)
2817{ 3438{
2818 ev_loop (w->other, EVLOOP_NONBLOCK); 3439 ev_run (w->other, EVRUN_NOWAIT);
2819} 3440}
2820 3441
2821static void 3442static void
2822embed_io_cb (EV_P_ ev_io *io, int revents) 3443embed_io_cb (EV_P_ ev_io *io, int revents)
2823{ 3444{
2824 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3445 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2825 3446
2826 if (ev_cb (w)) 3447 if (ev_cb (w))
2827 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3448 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2828 else 3449 else
2829 ev_loop (w->other, EVLOOP_NONBLOCK); 3450 ev_run (w->other, EVRUN_NOWAIT);
2830} 3451}
2831 3452
2832static void 3453static void
2833embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3454embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2834{ 3455{
2835 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3456 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2836 3457
2837 { 3458 {
2838 struct ev_loop *loop = w->other; 3459 EV_P = w->other;
2839 3460
2840 while (fdchangecnt) 3461 while (fdchangecnt)
2841 { 3462 {
2842 fd_reify (EV_A); 3463 fd_reify (EV_A);
2843 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3464 ev_run (EV_A_ EVRUN_NOWAIT);
2844 } 3465 }
2845 } 3466 }
2846} 3467}
2847 3468
2848static void 3469static void
2849embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3470embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2850{ 3471{
2851 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3472 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2852 3473
3474 ev_embed_stop (EV_A_ w);
3475
2853 { 3476 {
2854 struct ev_loop *loop = w->other; 3477 EV_P = w->other;
2855 3478
2856 ev_loop_fork (EV_A); 3479 ev_loop_fork (EV_A);
3480 ev_run (EV_A_ EVRUN_NOWAIT);
2857 } 3481 }
3482
3483 ev_embed_start (EV_A_ w);
2858} 3484}
2859 3485
2860#if 0 3486#if 0
2861static void 3487static void
2862embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3488embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2870{ 3496{
2871 if (expect_false (ev_is_active (w))) 3497 if (expect_false (ev_is_active (w)))
2872 return; 3498 return;
2873 3499
2874 { 3500 {
2875 struct ev_loop *loop = w->other; 3501 EV_P = w->other;
2876 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3502 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2877 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3503 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2878 } 3504 }
2879 3505
2880 EV_FREQUENT_CHECK; 3506 EV_FREQUENT_CHECK;
2881 3507
… …
2907 3533
2908 ev_io_stop (EV_A_ &w->io); 3534 ev_io_stop (EV_A_ &w->io);
2909 ev_prepare_stop (EV_A_ &w->prepare); 3535 ev_prepare_stop (EV_A_ &w->prepare);
2910 ev_fork_stop (EV_A_ &w->fork); 3536 ev_fork_stop (EV_A_ &w->fork);
2911 3537
3538 ev_stop (EV_A_ (W)w);
3539
2912 EV_FREQUENT_CHECK; 3540 EV_FREQUENT_CHECK;
2913} 3541}
2914#endif 3542#endif
2915 3543
2916#if EV_FORK_ENABLE 3544#if EV_FORK_ENABLE
… …
2956ev_async_start (EV_P_ ev_async *w) 3584ev_async_start (EV_P_ ev_async *w)
2957{ 3585{
2958 if (expect_false (ev_is_active (w))) 3586 if (expect_false (ev_is_active (w)))
2959 return; 3587 return;
2960 3588
3589 w->sent = 0;
3590
2961 evpipe_init (EV_A); 3591 evpipe_init (EV_A);
2962 3592
2963 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
2964 3594
2965 ev_start (EV_A_ (W)w, ++asynccnt); 3595 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2992 3622
2993void 3623void
2994ev_async_send (EV_P_ ev_async *w) 3624ev_async_send (EV_P_ ev_async *w)
2995{ 3625{
2996 w->sent = 1; 3626 w->sent = 1;
2997 evpipe_write (EV_A_ &gotasync); 3627 evpipe_write (EV_A_ &async_pending);
2998} 3628}
2999#endif 3629#endif
3000 3630
3001/*****************************************************************************/ 3631/*****************************************************************************/
3002 3632
… …
3042{ 3672{
3043 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3673 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3044 3674
3045 if (expect_false (!once)) 3675 if (expect_false (!once))
3046 { 3676 {
3047 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3677 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3048 return; 3678 return;
3049 } 3679 }
3050 3680
3051 once->cb = cb; 3681 once->cb = cb;
3052 once->arg = arg; 3682 once->arg = arg;
… …
3064 ev_timer_set (&once->to, timeout, 0.); 3694 ev_timer_set (&once->to, timeout, 0.);
3065 ev_timer_start (EV_A_ &once->to); 3695 ev_timer_start (EV_A_ &once->to);
3066 } 3696 }
3067} 3697}
3068 3698
3699/*****************************************************************************/
3700
3701#if EV_WALK_ENABLE
3702void
3703ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3704{
3705 int i, j;
3706 ev_watcher_list *wl, *wn;
3707
3708 if (types & (EV_IO | EV_EMBED))
3709 for (i = 0; i < anfdmax; ++i)
3710 for (wl = anfds [i].head; wl; )
3711 {
3712 wn = wl->next;
3713
3714#if EV_EMBED_ENABLE
3715 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3716 {
3717 if (types & EV_EMBED)
3718 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3719 }
3720 else
3721#endif
3722#if EV_USE_INOTIFY
3723 if (ev_cb ((ev_io *)wl) == infy_cb)
3724 ;
3725 else
3726#endif
3727 if ((ev_io *)wl != &pipe_w)
3728 if (types & EV_IO)
3729 cb (EV_A_ EV_IO, wl);
3730
3731 wl = wn;
3732 }
3733
3734 if (types & (EV_TIMER | EV_STAT))
3735 for (i = timercnt + HEAP0; i-- > HEAP0; )
3736#if EV_STAT_ENABLE
3737 /*TODO: timer is not always active*/
3738 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3739 {
3740 if (types & EV_STAT)
3741 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3742 }
3743 else
3744#endif
3745 if (types & EV_TIMER)
3746 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3747
3748#if EV_PERIODIC_ENABLE
3749 if (types & EV_PERIODIC)
3750 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3751 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3752#endif
3753
3754#if EV_IDLE_ENABLE
3755 if (types & EV_IDLE)
3756 for (j = NUMPRI; i--; )
3757 for (i = idlecnt [j]; i--; )
3758 cb (EV_A_ EV_IDLE, idles [j][i]);
3759#endif
3760
3761#if EV_FORK_ENABLE
3762 if (types & EV_FORK)
3763 for (i = forkcnt; i--; )
3764 if (ev_cb (forks [i]) != embed_fork_cb)
3765 cb (EV_A_ EV_FORK, forks [i]);
3766#endif
3767
3768#if EV_ASYNC_ENABLE
3769 if (types & EV_ASYNC)
3770 for (i = asynccnt; i--; )
3771 cb (EV_A_ EV_ASYNC, asyncs [i]);
3772#endif
3773
3774#if EV_PREPARE_ENABLE
3775 if (types & EV_PREPARE)
3776 for (i = preparecnt; i--; )
3777# if EV_EMBED_ENABLE
3778 if (ev_cb (prepares [i]) != embed_prepare_cb)
3779# endif
3780 cb (EV_A_ EV_PREPARE, prepares [i]);
3781#endif
3782
3783#if EV_CHECK_ENABLE
3784 if (types & EV_CHECK)
3785 for (i = checkcnt; i--; )
3786 cb (EV_A_ EV_CHECK, checks [i]);
3787#endif
3788
3789#if EV_SIGNAL_ENABLE
3790 if (types & EV_SIGNAL)
3791 for (i = 0; i < EV_NSIG - 1; ++i)
3792 for (wl = signals [i].head; wl; )
3793 {
3794 wn = wl->next;
3795 cb (EV_A_ EV_SIGNAL, wl);
3796 wl = wn;
3797 }
3798#endif
3799
3800#if EV_CHILD_ENABLE
3801 if (types & EV_CHILD)
3802 for (i = (EV_PID_HASHSIZE); i--; )
3803 for (wl = childs [i]; wl; )
3804 {
3805 wn = wl->next;
3806 cb (EV_A_ EV_CHILD, wl);
3807 wl = wn;
3808 }
3809#endif
3810/* EV_STAT 0x00001000 /* stat data changed */
3811/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3812}
3813#endif
3814
3069#if EV_MULTIPLICITY 3815#if EV_MULTIPLICITY
3070 #include "ev_wrap.h" 3816 #include "ev_wrap.h"
3071#endif 3817#endif
3072 3818
3073#ifdef __cplusplus 3819EV_CPP(})
3074}
3075#endif
3076 3820

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