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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 1.360 by root, Sun Oct 24 18:12:41 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
130# endif 157# endif
131 158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
… …
160# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 192# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
164# endif 195# endif
196# undef EV_AVOID_STDIO
165#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
166 206
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
236
237#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else
241# define EV_USE_CLOCK_SYSCALL 0
242# endif
243#endif
168 244
169#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 248# else
173# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
174# endif 250# endif
175#endif 251#endif
176 252
177#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 255#endif
180 256
181#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 260# else
185# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
186# endif 262# endif
187#endif 263#endif
188 264
189#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 267#endif
192 268
193#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
194# ifdef _WIN32 270# ifdef _WIN32
195# define EV_USE_POLL 0 271# define EV_USE_POLL 0
196# else 272# else
197# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 274# endif
199#endif 275#endif
200 276
201#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 280# else
205# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
206# endif 282# endif
207#endif 283#endif
208 284
… …
214# define EV_USE_PORT 0 290# define EV_USE_PORT 0
215#endif 291#endif
216 292
217#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 296# else
221# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
222# endif 298# endif
223#endif 299#endif
224 300
225#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 303#endif
232 304
233#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 307#endif
240 308
241#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 312# else
245# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
314# endif
315#endif
316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
246# endif 322# endif
247#endif 323#endif
248 324
249#if 0 /* debugging */ 325#if 0 /* debugging */
250# define EV_VERIFY 3 326# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
253#endif 329#endif
254 330
255#ifndef EV_VERIFY 331#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 333#endif
258 334
259#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 337#endif
262 338
263#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
265#endif 355#endif
266 356
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
268 364
269#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
272#endif 368#endif
… …
286# include <sys/select.h> 382# include <sys/select.h>
287# endif 383# endif
288#endif 384#endif
289 385
290#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
291# include <sys/utsname.h> 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 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
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
1346static void noinline 1735/* free up a loop structure */
1736void
1347loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
1348{ 1738{
1349 int i; 1739 int i;
1350 1740
1741#if EV_CHILD_ENABLE
1742 if (ev_is_active (&childev))
1743 {
1744 ev_ref (EV_A); /* child watcher */
1745 ev_signal_stop (EV_A_ &childev);
1746 }
1747#endif
1748
1351 if (ev_is_active (&pipeev)) 1749 if (ev_is_active (&pipe_w))
1352 { 1750 {
1353 ev_ref (EV_A); /* signal watcher */ 1751 /*ev_ref (EV_A);*/
1354 ev_io_stop (EV_A_ &pipeev); 1752 /*ev_io_stop (EV_A_ &pipe_w);*/
1355 1753
1356#if EV_USE_EVENTFD 1754#if EV_USE_EVENTFD
1357 if (evfd >= 0) 1755 if (evfd >= 0)
1358 close (evfd); 1756 close (evfd);
1359#endif 1757#endif
1360 1758
1361 if (evpipe [0] >= 0) 1759 if (evpipe [0] >= 0)
1362 { 1760 {
1363 close (evpipe [0]); 1761 EV_WIN32_CLOSE_FD (evpipe [0]);
1364 close (evpipe [1]); 1762 EV_WIN32_CLOSE_FD (evpipe [1]);
1365 } 1763 }
1366 } 1764 }
1765
1766#if EV_USE_SIGNALFD
1767 if (ev_is_active (&sigfd_w))
1768 close (sigfd);
1769#endif
1367 1770
1368#if EV_USE_INOTIFY 1771#if EV_USE_INOTIFY
1369 if (fs_fd >= 0) 1772 if (fs_fd >= 0)
1370 close (fs_fd); 1773 close (fs_fd);
1371#endif 1774#endif
1372 1775
1373 if (backend_fd >= 0) 1776 if (backend_fd >= 0)
1374 close (backend_fd); 1777 close (backend_fd);
1375 1778
1779#if EV_USE_IOCP
1780 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1781#endif
1376#if EV_USE_PORT 1782#if EV_USE_PORT
1377 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1783 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1378#endif 1784#endif
1379#if EV_USE_KQUEUE 1785#if EV_USE_KQUEUE
1380 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1786 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1395#if EV_IDLE_ENABLE 1801#if EV_IDLE_ENABLE
1396 array_free (idle, [i]); 1802 array_free (idle, [i]);
1397#endif 1803#endif
1398 } 1804 }
1399 1805
1400 ev_free (anfds); anfdmax = 0; 1806 ev_free (anfds); anfds = 0; anfdmax = 0;
1401 1807
1402 /* have to use the microsoft-never-gets-it-right macro */ 1808 /* have to use the microsoft-never-gets-it-right macro */
1809 array_free (rfeed, EMPTY);
1403 array_free (fdchange, EMPTY); 1810 array_free (fdchange, EMPTY);
1404 array_free (timer, EMPTY); 1811 array_free (timer, EMPTY);
1405#if EV_PERIODIC_ENABLE 1812#if EV_PERIODIC_ENABLE
1406 array_free (periodic, EMPTY); 1813 array_free (periodic, EMPTY);
1407#endif 1814#endif
1408#if EV_FORK_ENABLE 1815#if EV_FORK_ENABLE
1409 array_free (fork, EMPTY); 1816 array_free (fork, EMPTY);
1410#endif 1817#endif
1818#if EV_CLEANUP_ENABLE
1819 array_free (cleanup, EMPTY);
1820#endif
1411 array_free (prepare, EMPTY); 1821 array_free (prepare, EMPTY);
1412 array_free (check, EMPTY); 1822 array_free (check, EMPTY);
1413#if EV_ASYNC_ENABLE 1823#if EV_ASYNC_ENABLE
1414 array_free (async, EMPTY); 1824 array_free (async, EMPTY);
1415#endif 1825#endif
1416 1826
1417 backend = 0; 1827 backend = 0;
1828
1829#if EV_MULTIPLICITY
1830 if (ev_is_default_loop (EV_A))
1831#endif
1832 ev_default_loop_ptr = 0;
1833#if EV_MULTIPLICITY
1834 else
1835 ev_free (EV_A);
1836#endif
1418} 1837}
1419 1838
1420#if EV_USE_INOTIFY 1839#if EV_USE_INOTIFY
1421void inline_size infy_fork (EV_P); 1840inline_size void infy_fork (EV_P);
1422#endif 1841#endif
1423 1842
1424void inline_size 1843inline_size void
1425loop_fork (EV_P) 1844loop_fork (EV_P)
1426{ 1845{
1427#if EV_USE_PORT 1846#if EV_USE_PORT
1428 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1847 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1429#endif 1848#endif
… …
1435#endif 1854#endif
1436#if EV_USE_INOTIFY 1855#if EV_USE_INOTIFY
1437 infy_fork (EV_A); 1856 infy_fork (EV_A);
1438#endif 1857#endif
1439 1858
1440 if (ev_is_active (&pipeev)) 1859 if (ev_is_active (&pipe_w))
1441 { 1860 {
1442 /* this "locks" the handlers against writing to the pipe */ 1861 /* this "locks" the handlers against writing to the pipe */
1443 /* while we modify the fd vars */ 1862 /* while we modify the fd vars */
1444 gotsig = 1; 1863 sig_pending = 1;
1445#if EV_ASYNC_ENABLE 1864#if EV_ASYNC_ENABLE
1446 gotasync = 1; 1865 async_pending = 1;
1447#endif 1866#endif
1448 1867
1449 ev_ref (EV_A); 1868 ev_ref (EV_A);
1450 ev_io_stop (EV_A_ &pipeev); 1869 ev_io_stop (EV_A_ &pipe_w);
1451 1870
1452#if EV_USE_EVENTFD 1871#if EV_USE_EVENTFD
1453 if (evfd >= 0) 1872 if (evfd >= 0)
1454 close (evfd); 1873 close (evfd);
1455#endif 1874#endif
1456 1875
1457 if (evpipe [0] >= 0) 1876 if (evpipe [0] >= 0)
1458 { 1877 {
1459 close (evpipe [0]); 1878 EV_WIN32_CLOSE_FD (evpipe [0]);
1460 close (evpipe [1]); 1879 EV_WIN32_CLOSE_FD (evpipe [1]);
1461 } 1880 }
1462 1881
1882#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1463 evpipe_init (EV_A); 1883 evpipe_init (EV_A);
1464 /* now iterate over everything, in case we missed something */ 1884 /* now iterate over everything, in case we missed something */
1465 pipecb (EV_A_ &pipeev, EV_READ); 1885 pipecb (EV_A_ &pipe_w, EV_READ);
1886#endif
1466 } 1887 }
1467 1888
1468 postfork = 0; 1889 postfork = 0;
1469} 1890}
1470 1891
1471#if EV_MULTIPLICITY 1892#if EV_MULTIPLICITY
1472 1893
1473struct ev_loop * 1894struct ev_loop *
1474ev_loop_new (unsigned int flags) 1895ev_loop_new (unsigned int flags)
1475{ 1896{
1476 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1897 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1477 1898
1478 memset (loop, 0, sizeof (struct ev_loop)); 1899 memset (EV_A, 0, sizeof (struct ev_loop));
1479
1480 loop_init (EV_A_ flags); 1900 loop_init (EV_A_ flags);
1481 1901
1482 if (ev_backend (EV_A)) 1902 if (ev_backend (EV_A))
1483 return loop; 1903 return EV_A;
1484 1904
1905 ev_free (EV_A);
1485 return 0; 1906 return 0;
1486} 1907}
1487 1908
1488void 1909#endif /* multiplicity */
1489ev_loop_destroy (EV_P)
1490{
1491 loop_destroy (EV_A);
1492 ev_free (loop);
1493}
1494
1495void
1496ev_loop_fork (EV_P)
1497{
1498 postfork = 1; /* must be in line with ev_default_fork */
1499}
1500 1910
1501#if EV_VERIFY 1911#if EV_VERIFY
1502static void noinline 1912static void noinline
1503verify_watcher (EV_P_ W w) 1913verify_watcher (EV_P_ W w)
1504{ 1914{
1505 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1915 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1506 1916
1507 if (w->pending) 1917 if (w->pending)
1508 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1918 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1509} 1919}
1510 1920
1511static void noinline 1921static void noinline
1512verify_heap (EV_P_ ANHE *heap, int N) 1922verify_heap (EV_P_ ANHE *heap, int N)
1513{ 1923{
1514 int i; 1924 int i;
1515 1925
1516 for (i = HEAP0; i < N + HEAP0; ++i) 1926 for (i = HEAP0; i < N + HEAP0; ++i)
1517 { 1927 {
1518 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1928 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1519 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1929 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1520 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1930 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1521 1931
1522 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1932 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1523 } 1933 }
1524} 1934}
1525 1935
1526static void noinline 1936static void noinline
1527array_verify (EV_P_ W *ws, int cnt) 1937array_verify (EV_P_ W *ws, int cnt)
1528{ 1938{
1529 while (cnt--) 1939 while (cnt--)
1530 { 1940 {
1531 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1941 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1532 verify_watcher (EV_A_ ws [cnt]); 1942 verify_watcher (EV_A_ ws [cnt]);
1533 } 1943 }
1534} 1944}
1535#endif 1945#endif
1536 1946
1947#if EV_FEATURE_API
1537void 1948void
1538ev_loop_verify (EV_P) 1949ev_verify (EV_P)
1539{ 1950{
1540#if EV_VERIFY 1951#if EV_VERIFY
1541 int i; 1952 int i;
1542 WL w; 1953 WL w;
1543 1954
1544 assert (activecnt >= -1); 1955 assert (activecnt >= -1);
1545 1956
1546 assert (fdchangemax >= fdchangecnt); 1957 assert (fdchangemax >= fdchangecnt);
1547 for (i = 0; i < fdchangecnt; ++i) 1958 for (i = 0; i < fdchangecnt; ++i)
1548 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1959 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1549 1960
1550 assert (anfdmax >= 0); 1961 assert (anfdmax >= 0);
1551 for (i = 0; i < anfdmax; ++i) 1962 for (i = 0; i < anfdmax; ++i)
1552 for (w = anfds [i].head; w; w = w->next) 1963 for (w = anfds [i].head; w; w = w->next)
1553 { 1964 {
1554 verify_watcher (EV_A_ (W)w); 1965 verify_watcher (EV_A_ (W)w);
1555 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1966 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)); 1967 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1557 } 1968 }
1558 1969
1559 assert (timermax >= timercnt); 1970 assert (timermax >= timercnt);
1560 verify_heap (EV_A_ timers, timercnt); 1971 verify_heap (EV_A_ timers, timercnt);
1561 1972
… …
1577#if EV_FORK_ENABLE 1988#if EV_FORK_ENABLE
1578 assert (forkmax >= forkcnt); 1989 assert (forkmax >= forkcnt);
1579 array_verify (EV_A_ (W *)forks, forkcnt); 1990 array_verify (EV_A_ (W *)forks, forkcnt);
1580#endif 1991#endif
1581 1992
1993#if EV_CLEANUP_ENABLE
1994 assert (cleanupmax >= cleanupcnt);
1995 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
1996#endif
1997
1582#if EV_ASYNC_ENABLE 1998#if EV_ASYNC_ENABLE
1583 assert (asyncmax >= asynccnt); 1999 assert (asyncmax >= asynccnt);
1584 array_verify (EV_A_ (W *)asyncs, asynccnt); 2000 array_verify (EV_A_ (W *)asyncs, asynccnt);
1585#endif 2001#endif
1586 2002
2003#if EV_PREPARE_ENABLE
1587 assert (preparemax >= preparecnt); 2004 assert (preparemax >= preparecnt);
1588 array_verify (EV_A_ (W *)prepares, preparecnt); 2005 array_verify (EV_A_ (W *)prepares, preparecnt);
2006#endif
1589 2007
2008#if EV_CHECK_ENABLE
1590 assert (checkmax >= checkcnt); 2009 assert (checkmax >= checkcnt);
1591 array_verify (EV_A_ (W *)checks, checkcnt); 2010 array_verify (EV_A_ (W *)checks, checkcnt);
2011#endif
1592 2012
1593# if 0 2013# if 0
2014#if EV_CHILD_ENABLE
1594 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2015 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1595 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2016 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2017#endif
1596# endif 2018# endif
1597#endif 2019#endif
1598} 2020}
1599 2021#endif
1600#endif /* multiplicity */
1601 2022
1602#if EV_MULTIPLICITY 2023#if EV_MULTIPLICITY
1603struct ev_loop * 2024struct ev_loop *
1604ev_default_loop_init (unsigned int flags)
1605#else 2025#else
1606int 2026int
2027#endif
1607ev_default_loop (unsigned int flags) 2028ev_default_loop (unsigned int flags)
1608#endif
1609{ 2029{
1610 if (!ev_default_loop_ptr) 2030 if (!ev_default_loop_ptr)
1611 { 2031 {
1612#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
1613 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2033 EV_P = ev_default_loop_ptr = &default_loop_struct;
1614#else 2034#else
1615 ev_default_loop_ptr = 1; 2035 ev_default_loop_ptr = 1;
1616#endif 2036#endif
1617 2037
1618 loop_init (EV_A_ flags); 2038 loop_init (EV_A_ flags);
1619 2039
1620 if (ev_backend (EV_A)) 2040 if (ev_backend (EV_A))
1621 { 2041 {
1622#ifndef _WIN32 2042#if EV_CHILD_ENABLE
1623 ev_signal_init (&childev, childcb, SIGCHLD); 2043 ev_signal_init (&childev, childcb, SIGCHLD);
1624 ev_set_priority (&childev, EV_MAXPRI); 2044 ev_set_priority (&childev, EV_MAXPRI);
1625 ev_signal_start (EV_A_ &childev); 2045 ev_signal_start (EV_A_ &childev);
1626 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2046 ev_unref (EV_A); /* child watcher should not keep loop alive */
1627#endif 2047#endif
… …
1632 2052
1633 return ev_default_loop_ptr; 2053 return ev_default_loop_ptr;
1634} 2054}
1635 2055
1636void 2056void
1637ev_default_destroy (void) 2057ev_loop_fork (EV_P)
1638{ 2058{
1639#if EV_MULTIPLICITY
1640 struct ev_loop *loop = ev_default_loop_ptr;
1641#endif
1642
1643#ifndef _WIN32
1644 ev_ref (EV_A); /* child watcher */
1645 ev_signal_stop (EV_A_ &childev);
1646#endif
1647
1648 loop_destroy (EV_A);
1649}
1650
1651void
1652ev_default_fork (void)
1653{
1654#if EV_MULTIPLICITY
1655 struct ev_loop *loop = ev_default_loop_ptr;
1656#endif
1657
1658 if (backend)
1659 postfork = 1; /* must be in line with ev_loop_fork */ 2059 postfork = 1; /* must be in line with ev_default_fork */
1660} 2060}
1661 2061
1662/*****************************************************************************/ 2062/*****************************************************************************/
1663 2063
1664void 2064void
1665ev_invoke (EV_P_ void *w, int revents) 2065ev_invoke (EV_P_ void *w, int revents)
1666{ 2066{
1667 EV_CB_INVOKE ((W)w, revents); 2067 EV_CB_INVOKE ((W)w, revents);
1668} 2068}
1669 2069
1670void inline_speed 2070unsigned int
1671call_pending (EV_P) 2071ev_pending_count (EV_P)
2072{
2073 int pri;
2074 unsigned int count = 0;
2075
2076 for (pri = NUMPRI; pri--; )
2077 count += pendingcnt [pri];
2078
2079 return count;
2080}
2081
2082void noinline
2083ev_invoke_pending (EV_P)
1672{ 2084{
1673 int pri; 2085 int pri;
1674 2086
1675 for (pri = NUMPRI; pri--; ) 2087 for (pri = NUMPRI; pri--; )
1676 while (pendingcnt [pri]) 2088 while (pendingcnt [pri])
1677 { 2089 {
1678 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2090 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1679 2091
1680 if (expect_true (p->w))
1681 {
1682 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2092 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2093 /* ^ this is no longer true, as pending_w could be here */
1683 2094
1684 p->w->pending = 0; 2095 p->w->pending = 0;
1685 EV_CB_INVOKE (p->w, p->events); 2096 EV_CB_INVOKE (p->w, p->events);
1686 EV_FREQUENT_CHECK; 2097 EV_FREQUENT_CHECK;
1687 }
1688 } 2098 }
1689} 2099}
1690 2100
1691#if EV_IDLE_ENABLE 2101#if EV_IDLE_ENABLE
1692void inline_size 2102/* make idle watchers pending. this handles the "call-idle */
2103/* only when higher priorities are idle" logic */
2104inline_size void
1693idle_reify (EV_P) 2105idle_reify (EV_P)
1694{ 2106{
1695 if (expect_false (idleall)) 2107 if (expect_false (idleall))
1696 { 2108 {
1697 int pri; 2109 int pri;
… …
1709 } 2121 }
1710 } 2122 }
1711} 2123}
1712#endif 2124#endif
1713 2125
1714void inline_size 2126/* make timers pending */
2127inline_size void
1715timers_reify (EV_P) 2128timers_reify (EV_P)
1716{ 2129{
1717 EV_FREQUENT_CHECK; 2130 EV_FREQUENT_CHECK;
1718 2131
1719 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2132 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1720 { 2133 {
1721 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2134 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 { 2135 {
2136 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2137
2138 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2139
2140 /* first reschedule or stop timer */
2141 if (w->repeat)
2142 {
1728 ev_at (w) += w->repeat; 2143 ev_at (w) += w->repeat;
1729 if (ev_at (w) < mn_now) 2144 if (ev_at (w) < mn_now)
1730 ev_at (w) = mn_now; 2145 ev_at (w) = mn_now;
1731 2146
1732 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2147 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1733 2148
1734 ANHE_at_cache (timers [HEAP0]); 2149 ANHE_at_cache (timers [HEAP0]);
1735 downheap (timers, timercnt, HEAP0); 2150 downheap (timers, timercnt, HEAP0);
2151 }
2152 else
2153 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2154
2155 EV_FREQUENT_CHECK;
2156 feed_reverse (EV_A_ (W)w);
1736 } 2157 }
1737 else 2158 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1738 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1739 2159
1740 EV_FREQUENT_CHECK; 2160 feed_reverse_done (EV_A_ EV_TIMER);
1741 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1742 } 2161 }
1743} 2162}
1744 2163
1745#if EV_PERIODIC_ENABLE 2164#if EV_PERIODIC_ENABLE
1746void inline_size 2165/* make periodics pending */
2166inline_size void
1747periodics_reify (EV_P) 2167periodics_reify (EV_P)
1748{ 2168{
1749 EV_FREQUENT_CHECK; 2169 EV_FREQUENT_CHECK;
1750 2170
1751 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2171 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1752 { 2172 {
1753 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2173 int feed_count = 0;
1754 2174
1755 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2175 do
1756
1757 /* first reschedule or stop timer */
1758 if (w->reschedule_cb)
1759 { 2176 {
2177 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2178
2179 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2180
2181 /* first reschedule or stop timer */
2182 if (w->reschedule_cb)
2183 {
1760 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2184 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1761 2185
1762 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2186 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1763 2187
1764 ANHE_at_cache (periodics [HEAP0]); 2188 ANHE_at_cache (periodics [HEAP0]);
1765 downheap (periodics, periodiccnt, HEAP0); 2189 downheap (periodics, periodiccnt, HEAP0);
2190 }
2191 else if (w->interval)
2192 {
2193 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2194 /* if next trigger time is not sufficiently in the future, put it there */
2195 /* this might happen because of floating point inexactness */
2196 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2197 {
2198 ev_at (w) += w->interval;
2199
2200 /* if interval is unreasonably low we might still have a time in the past */
2201 /* so correct this. this will make the periodic very inexact, but the user */
2202 /* has effectively asked to get triggered more often than possible */
2203 if (ev_at (w) < ev_rt_now)
2204 ev_at (w) = ev_rt_now;
2205 }
2206
2207 ANHE_at_cache (periodics [HEAP0]);
2208 downheap (periodics, periodiccnt, HEAP0);
2209 }
2210 else
2211 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2212
2213 EV_FREQUENT_CHECK;
2214 feed_reverse (EV_A_ (W)w);
1766 } 2215 }
1767 else if (w->interval) 2216 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 2217
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); 2218 feed_reverse_done (EV_A_ EV_PERIODIC);
1791 } 2219 }
1792} 2220}
1793 2221
2222/* simply recalculate all periodics */
2223/* TODO: maybe ensure that at least one event happens when jumping forward? */
1794static void noinline 2224static void noinline
1795periodics_reschedule (EV_P) 2225periodics_reschedule (EV_P)
1796{ 2226{
1797 int i; 2227 int i;
1798 2228
… …
1811 2241
1812 reheap (periodics, periodiccnt); 2242 reheap (periodics, periodiccnt);
1813} 2243}
1814#endif 2244#endif
1815 2245
1816void inline_speed 2246/* adjust all timers by a given offset */
2247static void noinline
2248timers_reschedule (EV_P_ ev_tstamp adjust)
2249{
2250 int i;
2251
2252 for (i = 0; i < timercnt; ++i)
2253 {
2254 ANHE *he = timers + i + HEAP0;
2255 ANHE_w (*he)->at += adjust;
2256 ANHE_at_cache (*he);
2257 }
2258}
2259
2260/* fetch new monotonic and realtime times from the kernel */
2261/* also detect if there was a timejump, and act accordingly */
2262inline_speed void
1817time_update (EV_P_ ev_tstamp max_block) 2263time_update (EV_P_ ev_tstamp max_block)
1818{ 2264{
1819 int i;
1820
1821#if EV_USE_MONOTONIC 2265#if EV_USE_MONOTONIC
1822 if (expect_true (have_monotonic)) 2266 if (expect_true (have_monotonic))
1823 { 2267 {
2268 int i;
1824 ev_tstamp odiff = rtmn_diff; 2269 ev_tstamp odiff = rtmn_diff;
1825 2270
1826 mn_now = get_clock (); 2271 mn_now = get_clock ();
1827 2272
1828 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2273 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1854 ev_rt_now = ev_time (); 2299 ev_rt_now = ev_time ();
1855 mn_now = get_clock (); 2300 mn_now = get_clock ();
1856 now_floor = mn_now; 2301 now_floor = mn_now;
1857 } 2302 }
1858 2303
2304 /* no timer adjustment, as the monotonic clock doesn't jump */
2305 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1859# if EV_PERIODIC_ENABLE 2306# if EV_PERIODIC_ENABLE
1860 periodics_reschedule (EV_A); 2307 periodics_reschedule (EV_A);
1861# endif 2308# endif
1862 /* no timer adjustment, as the monotonic clock doesn't jump */
1863 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1864 } 2309 }
1865 else 2310 else
1866#endif 2311#endif
1867 { 2312 {
1868 ev_rt_now = ev_time (); 2313 ev_rt_now = ev_time ();
1869 2314
1870 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2315 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1871 { 2316 {
2317 /* adjust timers. this is easy, as the offset is the same for all of them */
2318 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1872#if EV_PERIODIC_ENABLE 2319#if EV_PERIODIC_ENABLE
1873 periodics_reschedule (EV_A); 2320 periodics_reschedule (EV_A);
1874#endif 2321#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 } 2322 }
1883 2323
1884 mn_now = ev_rt_now; 2324 mn_now = ev_rt_now;
1885 } 2325 }
1886} 2326}
1887 2327
1888void 2328void
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) 2329ev_run (EV_P_ int flags)
1910{ 2330{
2331#if EV_FEATURE_API
2332 ++loop_depth;
2333#endif
2334
2335 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2336
1911 loop_done = EVUNLOOP_CANCEL; 2337 loop_done = EVBREAK_CANCEL;
1912 2338
1913 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2339 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1914 2340
1915 do 2341 do
1916 { 2342 {
1917#if EV_VERIFY >= 2 2343#if EV_VERIFY >= 2
1918 ev_loop_verify (EV_A); 2344 ev_verify (EV_A);
1919#endif 2345#endif
1920 2346
1921#ifndef _WIN32 2347#ifndef _WIN32
1922 if (expect_false (curpid)) /* penalise the forking check even more */ 2348 if (expect_false (curpid)) /* penalise the forking check even more */
1923 if (expect_false (getpid () != curpid)) 2349 if (expect_false (getpid () != curpid))
… …
1931 /* we might have forked, so queue fork handlers */ 2357 /* we might have forked, so queue fork handlers */
1932 if (expect_false (postfork)) 2358 if (expect_false (postfork))
1933 if (forkcnt) 2359 if (forkcnt)
1934 { 2360 {
1935 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2361 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1936 call_pending (EV_A); 2362 EV_INVOKE_PENDING;
1937 } 2363 }
1938#endif 2364#endif
1939 2365
2366#if EV_PREPARE_ENABLE
1940 /* queue prepare watchers (and execute them) */ 2367 /* queue prepare watchers (and execute them) */
1941 if (expect_false (preparecnt)) 2368 if (expect_false (preparecnt))
1942 { 2369 {
1943 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2370 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1944 call_pending (EV_A); 2371 EV_INVOKE_PENDING;
1945 } 2372 }
2373#endif
1946 2374
1947 if (expect_false (!activecnt)) 2375 if (expect_false (loop_done))
1948 break; 2376 break;
1949 2377
1950 /* we might have forked, so reify kernel state if necessary */ 2378 /* we might have forked, so reify kernel state if necessary */
1951 if (expect_false (postfork)) 2379 if (expect_false (postfork))
1952 loop_fork (EV_A); 2380 loop_fork (EV_A);
… …
1957 /* calculate blocking time */ 2385 /* calculate blocking time */
1958 { 2386 {
1959 ev_tstamp waittime = 0.; 2387 ev_tstamp waittime = 0.;
1960 ev_tstamp sleeptime = 0.; 2388 ev_tstamp sleeptime = 0.;
1961 2389
2390 /* remember old timestamp for io_blocktime calculation */
2391 ev_tstamp prev_mn_now = mn_now;
2392
2393 /* update time to cancel out callback processing overhead */
2394 time_update (EV_A_ 1e100);
2395
1962 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2396 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1963 { 2397 {
1964 /* update time to cancel out callback processing overhead */
1965 time_update (EV_A_ 1e100);
1966
1967 waittime = MAX_BLOCKTIME; 2398 waittime = MAX_BLOCKTIME;
1968 2399
1969 if (timercnt) 2400 if (timercnt)
1970 { 2401 {
1971 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2402 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1978 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2409 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1979 if (waittime > to) waittime = to; 2410 if (waittime > to) waittime = to;
1980 } 2411 }
1981#endif 2412#endif
1982 2413
2414 /* don't let timeouts decrease the waittime below timeout_blocktime */
1983 if (expect_false (waittime < timeout_blocktime)) 2415 if (expect_false (waittime < timeout_blocktime))
1984 waittime = timeout_blocktime; 2416 waittime = timeout_blocktime;
1985 2417
1986 sleeptime = waittime - backend_fudge; 2418 /* extra check because io_blocktime is commonly 0 */
1987
1988 if (expect_true (sleeptime > io_blocktime)) 2419 if (expect_false (io_blocktime))
1989 sleeptime = io_blocktime;
1990
1991 if (sleeptime)
1992 { 2420 {
2421 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2422
2423 if (sleeptime > waittime - backend_fudge)
2424 sleeptime = waittime - backend_fudge;
2425
2426 if (expect_true (sleeptime > 0.))
2427 {
1993 ev_sleep (sleeptime); 2428 ev_sleep (sleeptime);
1994 waittime -= sleeptime; 2429 waittime -= sleeptime;
2430 }
1995 } 2431 }
1996 } 2432 }
1997 2433
2434#if EV_FEATURE_API
1998 ++loop_count; 2435 ++loop_count;
2436#endif
2437 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1999 backend_poll (EV_A_ waittime); 2438 backend_poll (EV_A_ waittime);
2439 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2000 2440
2001 /* update ev_rt_now, do magic */ 2441 /* update ev_rt_now, do magic */
2002 time_update (EV_A_ waittime + sleeptime); 2442 time_update (EV_A_ waittime + sleeptime);
2003 } 2443 }
2004 2444
… …
2011#if EV_IDLE_ENABLE 2451#if EV_IDLE_ENABLE
2012 /* queue idle watchers unless other events are pending */ 2452 /* queue idle watchers unless other events are pending */
2013 idle_reify (EV_A); 2453 idle_reify (EV_A);
2014#endif 2454#endif
2015 2455
2456#if EV_CHECK_ENABLE
2016 /* queue check watchers, to be executed first */ 2457 /* queue check watchers, to be executed first */
2017 if (expect_false (checkcnt)) 2458 if (expect_false (checkcnt))
2018 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2459 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2460#endif
2019 2461
2020 call_pending (EV_A); 2462 EV_INVOKE_PENDING;
2021 } 2463 }
2022 while (expect_true ( 2464 while (expect_true (
2023 activecnt 2465 activecnt
2024 && !loop_done 2466 && !loop_done
2025 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2467 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2026 )); 2468 ));
2027 2469
2028 if (loop_done == EVUNLOOP_ONE) 2470 if (loop_done == EVBREAK_ONE)
2029 loop_done = EVUNLOOP_CANCEL; 2471 loop_done = EVBREAK_CANCEL;
2030}
2031 2472
2473#if EV_FEATURE_API
2474 --loop_depth;
2475#endif
2476}
2477
2032void 2478void
2033ev_unloop (EV_P_ int how) 2479ev_break (EV_P_ int how)
2034{ 2480{
2035 loop_done = how; 2481 loop_done = how;
2036} 2482}
2037 2483
2484void
2485ev_ref (EV_P)
2486{
2487 ++activecnt;
2488}
2489
2490void
2491ev_unref (EV_P)
2492{
2493 --activecnt;
2494}
2495
2496void
2497ev_now_update (EV_P)
2498{
2499 time_update (EV_A_ 1e100);
2500}
2501
2502void
2503ev_suspend (EV_P)
2504{
2505 ev_now_update (EV_A);
2506}
2507
2508void
2509ev_resume (EV_P)
2510{
2511 ev_tstamp mn_prev = mn_now;
2512
2513 ev_now_update (EV_A);
2514 timers_reschedule (EV_A_ mn_now - mn_prev);
2515#if EV_PERIODIC_ENABLE
2516 /* TODO: really do this? */
2517 periodics_reschedule (EV_A);
2518#endif
2519}
2520
2038/*****************************************************************************/ 2521/*****************************************************************************/
2522/* singly-linked list management, used when the expected list length is short */
2039 2523
2040void inline_size 2524inline_size void
2041wlist_add (WL *head, WL elem) 2525wlist_add (WL *head, WL elem)
2042{ 2526{
2043 elem->next = *head; 2527 elem->next = *head;
2044 *head = elem; 2528 *head = elem;
2045} 2529}
2046 2530
2047void inline_size 2531inline_size void
2048wlist_del (WL *head, WL elem) 2532wlist_del (WL *head, WL elem)
2049{ 2533{
2050 while (*head) 2534 while (*head)
2051 { 2535 {
2052 if (*head == elem) 2536 if (expect_true (*head == elem))
2053 { 2537 {
2054 *head = elem->next; 2538 *head = elem->next;
2055 return; 2539 break;
2056 } 2540 }
2057 2541
2058 head = &(*head)->next; 2542 head = &(*head)->next;
2059 } 2543 }
2060} 2544}
2061 2545
2062void inline_speed 2546/* internal, faster, version of ev_clear_pending */
2547inline_speed void
2063clear_pending (EV_P_ W w) 2548clear_pending (EV_P_ W w)
2064{ 2549{
2065 if (w->pending) 2550 if (w->pending)
2066 { 2551 {
2067 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2552 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2068 w->pending = 0; 2553 w->pending = 0;
2069 } 2554 }
2070} 2555}
2071 2556
2072int 2557int
… …
2076 int pending = w_->pending; 2561 int pending = w_->pending;
2077 2562
2078 if (expect_true (pending)) 2563 if (expect_true (pending))
2079 { 2564 {
2080 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2565 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2566 p->w = (W)&pending_w;
2081 w_->pending = 0; 2567 w_->pending = 0;
2082 p->w = 0;
2083 return p->events; 2568 return p->events;
2084 } 2569 }
2085 else 2570 else
2086 return 0; 2571 return 0;
2087} 2572}
2088 2573
2089void inline_size 2574inline_size void
2090pri_adjust (EV_P_ W w) 2575pri_adjust (EV_P_ W w)
2091{ 2576{
2092 int pri = w->priority; 2577 int pri = ev_priority (w);
2093 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2578 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2094 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2579 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2095 w->priority = pri; 2580 ev_set_priority (w, pri);
2096} 2581}
2097 2582
2098void inline_speed 2583inline_speed void
2099ev_start (EV_P_ W w, int active) 2584ev_start (EV_P_ W w, int active)
2100{ 2585{
2101 pri_adjust (EV_A_ w); 2586 pri_adjust (EV_A_ w);
2102 w->active = active; 2587 w->active = active;
2103 ev_ref (EV_A); 2588 ev_ref (EV_A);
2104} 2589}
2105 2590
2106void inline_size 2591inline_size void
2107ev_stop (EV_P_ W w) 2592ev_stop (EV_P_ W w)
2108{ 2593{
2109 ev_unref (EV_A); 2594 ev_unref (EV_A);
2110 w->active = 0; 2595 w->active = 0;
2111} 2596}
… …
2118 int fd = w->fd; 2603 int fd = w->fd;
2119 2604
2120 if (expect_false (ev_is_active (w))) 2605 if (expect_false (ev_is_active (w)))
2121 return; 2606 return;
2122 2607
2123 assert (("ev_io_start called with negative fd", fd >= 0)); 2608 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)))); 2609 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2125 2610
2126 EV_FREQUENT_CHECK; 2611 EV_FREQUENT_CHECK;
2127 2612
2128 ev_start (EV_A_ (W)w, 1); 2613 ev_start (EV_A_ (W)w, 1);
2129 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2614 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2130 wlist_add (&anfds[fd].head, (WL)w); 2615 wlist_add (&anfds[fd].head, (WL)w);
2131 2616
2132 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2617 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2133 w->events &= ~EV_IOFDSET; 2618 w->events &= ~EV__IOFDSET;
2134 2619
2135 EV_FREQUENT_CHECK; 2620 EV_FREQUENT_CHECK;
2136} 2621}
2137 2622
2138void noinline 2623void noinline
… …
2140{ 2625{
2141 clear_pending (EV_A_ (W)w); 2626 clear_pending (EV_A_ (W)w);
2142 if (expect_false (!ev_is_active (w))) 2627 if (expect_false (!ev_is_active (w)))
2143 return; 2628 return;
2144 2629
2145 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2630 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2146 2631
2147 EV_FREQUENT_CHECK; 2632 EV_FREQUENT_CHECK;
2148 2633
2149 wlist_del (&anfds[w->fd].head, (WL)w); 2634 wlist_del (&anfds[w->fd].head, (WL)w);
2150 ev_stop (EV_A_ (W)w); 2635 ev_stop (EV_A_ (W)w);
2151 2636
2152 fd_change (EV_A_ w->fd, 1); 2637 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2153 2638
2154 EV_FREQUENT_CHECK; 2639 EV_FREQUENT_CHECK;
2155} 2640}
2156 2641
2157void noinline 2642void noinline
… …
2160 if (expect_false (ev_is_active (w))) 2645 if (expect_false (ev_is_active (w)))
2161 return; 2646 return;
2162 2647
2163 ev_at (w) += mn_now; 2648 ev_at (w) += mn_now;
2164 2649
2165 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2650 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2166 2651
2167 EV_FREQUENT_CHECK; 2652 EV_FREQUENT_CHECK;
2168 2653
2169 ++timercnt; 2654 ++timercnt;
2170 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2655 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2173 ANHE_at_cache (timers [ev_active (w)]); 2658 ANHE_at_cache (timers [ev_active (w)]);
2174 upheap (timers, ev_active (w)); 2659 upheap (timers, ev_active (w));
2175 2660
2176 EV_FREQUENT_CHECK; 2661 EV_FREQUENT_CHECK;
2177 2662
2178 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2663 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2179} 2664}
2180 2665
2181void noinline 2666void noinline
2182ev_timer_stop (EV_P_ ev_timer *w) 2667ev_timer_stop (EV_P_ ev_timer *w)
2183{ 2668{
… …
2188 EV_FREQUENT_CHECK; 2673 EV_FREQUENT_CHECK;
2189 2674
2190 { 2675 {
2191 int active = ev_active (w); 2676 int active = ev_active (w);
2192 2677
2193 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2678 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2194 2679
2195 --timercnt; 2680 --timercnt;
2196 2681
2197 if (expect_true (active < timercnt + HEAP0)) 2682 if (expect_true (active < timercnt + HEAP0))
2198 { 2683 {
2199 timers [active] = timers [timercnt + HEAP0]; 2684 timers [active] = timers [timercnt + HEAP0];
2200 adjustheap (timers, timercnt, active); 2685 adjustheap (timers, timercnt, active);
2201 } 2686 }
2202 } 2687 }
2203 2688
2204 EV_FREQUENT_CHECK;
2205
2206 ev_at (w) -= mn_now; 2689 ev_at (w) -= mn_now;
2207 2690
2208 ev_stop (EV_A_ (W)w); 2691 ev_stop (EV_A_ (W)w);
2692
2693 EV_FREQUENT_CHECK;
2209} 2694}
2210 2695
2211void noinline 2696void noinline
2212ev_timer_again (EV_P_ ev_timer *w) 2697ev_timer_again (EV_P_ ev_timer *w)
2213{ 2698{
… …
2231 } 2716 }
2232 2717
2233 EV_FREQUENT_CHECK; 2718 EV_FREQUENT_CHECK;
2234} 2719}
2235 2720
2721ev_tstamp
2722ev_timer_remaining (EV_P_ ev_timer *w)
2723{
2724 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2725}
2726
2236#if EV_PERIODIC_ENABLE 2727#if EV_PERIODIC_ENABLE
2237void noinline 2728void noinline
2238ev_periodic_start (EV_P_ ev_periodic *w) 2729ev_periodic_start (EV_P_ ev_periodic *w)
2239{ 2730{
2240 if (expect_false (ev_is_active (w))) 2731 if (expect_false (ev_is_active (w)))
… …
2242 2733
2243 if (w->reschedule_cb) 2734 if (w->reschedule_cb)
2244 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2735 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2245 else if (w->interval) 2736 else if (w->interval)
2246 { 2737 {
2247 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2738 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2248 /* this formula differs from the one in periodic_reify because we do not always round up */ 2739 /* this formula differs from the one in periodic_reify because we do not always round up */
2249 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2740 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2250 } 2741 }
2251 else 2742 else
2252 ev_at (w) = w->offset; 2743 ev_at (w) = w->offset;
… …
2260 ANHE_at_cache (periodics [ev_active (w)]); 2751 ANHE_at_cache (periodics [ev_active (w)]);
2261 upheap (periodics, ev_active (w)); 2752 upheap (periodics, ev_active (w));
2262 2753
2263 EV_FREQUENT_CHECK; 2754 EV_FREQUENT_CHECK;
2264 2755
2265 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2756 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2266} 2757}
2267 2758
2268void noinline 2759void noinline
2269ev_periodic_stop (EV_P_ ev_periodic *w) 2760ev_periodic_stop (EV_P_ ev_periodic *w)
2270{ 2761{
… …
2275 EV_FREQUENT_CHECK; 2766 EV_FREQUENT_CHECK;
2276 2767
2277 { 2768 {
2278 int active = ev_active (w); 2769 int active = ev_active (w);
2279 2770
2280 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2771 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2281 2772
2282 --periodiccnt; 2773 --periodiccnt;
2283 2774
2284 if (expect_true (active < periodiccnt + HEAP0)) 2775 if (expect_true (active < periodiccnt + HEAP0))
2285 { 2776 {
2286 periodics [active] = periodics [periodiccnt + HEAP0]; 2777 periodics [active] = periodics [periodiccnt + HEAP0];
2287 adjustheap (periodics, periodiccnt, active); 2778 adjustheap (periodics, periodiccnt, active);
2288 } 2779 }
2289 } 2780 }
2290 2781
2291 EV_FREQUENT_CHECK;
2292
2293 ev_stop (EV_A_ (W)w); 2782 ev_stop (EV_A_ (W)w);
2783
2784 EV_FREQUENT_CHECK;
2294} 2785}
2295 2786
2296void noinline 2787void noinline
2297ev_periodic_again (EV_P_ ev_periodic *w) 2788ev_periodic_again (EV_P_ ev_periodic *w)
2298{ 2789{
… …
2304 2795
2305#ifndef SA_RESTART 2796#ifndef SA_RESTART
2306# define SA_RESTART 0 2797# define SA_RESTART 0
2307#endif 2798#endif
2308 2799
2800#if EV_SIGNAL_ENABLE
2801
2309void noinline 2802void noinline
2310ev_signal_start (EV_P_ ev_signal *w) 2803ev_signal_start (EV_P_ ev_signal *w)
2311{ 2804{
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))) 2805 if (expect_false (ev_is_active (w)))
2316 return; 2806 return;
2317 2807
2318 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2808 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2319 2809
2320 evpipe_init (EV_A); 2810#if EV_MULTIPLICITY
2811 assert (("libev: a signal must not be attached to two different loops",
2812 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2321 2813
2322 EV_FREQUENT_CHECK; 2814 signals [w->signum - 1].loop = EV_A;
2815#endif
2323 2816
2817 EV_FREQUENT_CHECK;
2818
2819#if EV_USE_SIGNALFD
2820 if (sigfd == -2)
2324 { 2821 {
2325#ifndef _WIN32 2822 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2326 sigset_t full, prev; 2823 if (sigfd < 0 && errno == EINVAL)
2327 sigfillset (&full); 2824 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2328 sigprocmask (SIG_SETMASK, &full, &prev);
2329#endif
2330 2825
2331 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2826 if (sigfd >= 0)
2827 {
2828 fd_intern (sigfd); /* doing it twice will not hurt */
2332 2829
2333#ifndef _WIN32 2830 sigemptyset (&sigfd_set);
2334 sigprocmask (SIG_SETMASK, &prev, 0); 2831
2335#endif 2832 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2833 ev_set_priority (&sigfd_w, EV_MAXPRI);
2834 ev_io_start (EV_A_ &sigfd_w);
2835 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2836 }
2336 } 2837 }
2838
2839 if (sigfd >= 0)
2840 {
2841 /* TODO: check .head */
2842 sigaddset (&sigfd_set, w->signum);
2843 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2844
2845 signalfd (sigfd, &sigfd_set, 0);
2846 }
2847#endif
2337 2848
2338 ev_start (EV_A_ (W)w, 1); 2849 ev_start (EV_A_ (W)w, 1);
2339 wlist_add (&signals [w->signum - 1].head, (WL)w); 2850 wlist_add (&signals [w->signum - 1].head, (WL)w);
2340 2851
2341 if (!((WL)w)->next) 2852 if (!((WL)w)->next)
2853# if EV_USE_SIGNALFD
2854 if (sigfd < 0) /*TODO*/
2855# endif
2342 { 2856 {
2343#if _WIN32 2857# ifdef _WIN32
2858 evpipe_init (EV_A);
2859
2344 signal (w->signum, ev_sighandler); 2860 signal (w->signum, ev_sighandler);
2345#else 2861# else
2346 struct sigaction sa; 2862 struct sigaction sa;
2863
2864 evpipe_init (EV_A);
2865
2347 sa.sa_handler = ev_sighandler; 2866 sa.sa_handler = ev_sighandler;
2348 sigfillset (&sa.sa_mask); 2867 sigfillset (&sa.sa_mask);
2349 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2868 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2350 sigaction (w->signum, &sa, 0); 2869 sigaction (w->signum, &sa, 0);
2870
2871 sigemptyset (&sa.sa_mask);
2872 sigaddset (&sa.sa_mask, w->signum);
2873 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2351#endif 2874#endif
2352 } 2875 }
2353 2876
2354 EV_FREQUENT_CHECK; 2877 EV_FREQUENT_CHECK;
2355} 2878}
2356 2879
2357void noinline 2880void noinline
… …
2365 2888
2366 wlist_del (&signals [w->signum - 1].head, (WL)w); 2889 wlist_del (&signals [w->signum - 1].head, (WL)w);
2367 ev_stop (EV_A_ (W)w); 2890 ev_stop (EV_A_ (W)w);
2368 2891
2369 if (!signals [w->signum - 1].head) 2892 if (!signals [w->signum - 1].head)
2893 {
2894#if EV_MULTIPLICITY
2895 signals [w->signum - 1].loop = 0; /* unattach from signal */
2896#endif
2897#if EV_USE_SIGNALFD
2898 if (sigfd >= 0)
2899 {
2900 sigset_t ss;
2901
2902 sigemptyset (&ss);
2903 sigaddset (&ss, w->signum);
2904 sigdelset (&sigfd_set, w->signum);
2905
2906 signalfd (sigfd, &sigfd_set, 0);
2907 sigprocmask (SIG_UNBLOCK, &ss, 0);
2908 }
2909 else
2910#endif
2370 signal (w->signum, SIG_DFL); 2911 signal (w->signum, SIG_DFL);
2912 }
2371 2913
2372 EV_FREQUENT_CHECK; 2914 EV_FREQUENT_CHECK;
2373} 2915}
2916
2917#endif
2918
2919#if EV_CHILD_ENABLE
2374 2920
2375void 2921void
2376ev_child_start (EV_P_ ev_child *w) 2922ev_child_start (EV_P_ ev_child *w)
2377{ 2923{
2378#if EV_MULTIPLICITY 2924#if EV_MULTIPLICITY
2379 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2925 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2380#endif 2926#endif
2381 if (expect_false (ev_is_active (w))) 2927 if (expect_false (ev_is_active (w)))
2382 return; 2928 return;
2383 2929
2384 EV_FREQUENT_CHECK; 2930 EV_FREQUENT_CHECK;
2385 2931
2386 ev_start (EV_A_ (W)w, 1); 2932 ev_start (EV_A_ (W)w, 1);
2387 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2933 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2388 2934
2389 EV_FREQUENT_CHECK; 2935 EV_FREQUENT_CHECK;
2390} 2936}
2391 2937
2392void 2938void
… …
2396 if (expect_false (!ev_is_active (w))) 2942 if (expect_false (!ev_is_active (w)))
2397 return; 2943 return;
2398 2944
2399 EV_FREQUENT_CHECK; 2945 EV_FREQUENT_CHECK;
2400 2946
2401 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2947 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2402 ev_stop (EV_A_ (W)w); 2948 ev_stop (EV_A_ (W)w);
2403 2949
2404 EV_FREQUENT_CHECK; 2950 EV_FREQUENT_CHECK;
2405} 2951}
2952
2953#endif
2406 2954
2407#if EV_STAT_ENABLE 2955#if EV_STAT_ENABLE
2408 2956
2409# ifdef _WIN32 2957# ifdef _WIN32
2410# undef lstat 2958# undef lstat
2411# define lstat(a,b) _stati64 (a,b) 2959# define lstat(a,b) _stati64 (a,b)
2412# endif 2960# endif
2413 2961
2414#define DEF_STAT_INTERVAL 5.0074891 2962#define DEF_STAT_INTERVAL 5.0074891
2963#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2415#define MIN_STAT_INTERVAL 0.1074891 2964#define MIN_STAT_INTERVAL 0.1074891
2416 2965
2417static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2966static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2418 2967
2419#if EV_USE_INOTIFY 2968#if EV_USE_INOTIFY
2420# define EV_INOTIFY_BUFSIZE 8192 2969
2970/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2971# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2421 2972
2422static void noinline 2973static void noinline
2423infy_add (EV_P_ ev_stat *w) 2974infy_add (EV_P_ ev_stat *w)
2424{ 2975{
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); 2976 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2426 2977
2427 if (w->wd < 0) 2978 if (w->wd >= 0)
2979 {
2980 struct statfs sfs;
2981
2982 /* now local changes will be tracked by inotify, but remote changes won't */
2983 /* unless the filesystem is known to be local, we therefore still poll */
2984 /* also do poll on <2.6.25, but with normal frequency */
2985
2986 if (!fs_2625)
2987 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2988 else if (!statfs (w->path, &sfs)
2989 && (sfs.f_type == 0x1373 /* devfs */
2990 || sfs.f_type == 0xEF53 /* ext2/3 */
2991 || sfs.f_type == 0x3153464a /* jfs */
2992 || sfs.f_type == 0x52654973 /* reiser3 */
2993 || sfs.f_type == 0x01021994 /* tempfs */
2994 || sfs.f_type == 0x58465342 /* xfs */))
2995 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2996 else
2997 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2428 { 2998 }
2429 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2999 else
3000 {
3001 /* can't use inotify, continue to stat */
3002 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2430 3003
2431 /* monitor some parent directory for speedup hints */ 3004 /* if path is not there, monitor some parent directory for speedup hints */
2432 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3005 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2433 /* but an efficiency issue only */ 3006 /* but an efficiency issue only */
2434 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3007 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2435 { 3008 {
2436 char path [4096]; 3009 char path [4096];
2437 strcpy (path, w->path); 3010 strcpy (path, w->path);
… …
2441 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3014 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2442 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3015 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2443 3016
2444 char *pend = strrchr (path, '/'); 3017 char *pend = strrchr (path, '/');
2445 3018
2446 if (!pend) 3019 if (!pend || pend == path)
2447 break; /* whoops, no '/', complain to your admin */ 3020 break;
2448 3021
2449 *pend = 0; 3022 *pend = 0;
2450 w->wd = inotify_add_watch (fs_fd, path, mask); 3023 w->wd = inotify_add_watch (fs_fd, path, mask);
2451 } 3024 }
2452 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3025 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2453 } 3026 }
2454 } 3027 }
2455 else
2456 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2457 3028
2458 if (w->wd >= 0) 3029 if (w->wd >= 0)
2459 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3030 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3031
3032 /* now re-arm timer, if required */
3033 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3034 ev_timer_again (EV_A_ &w->timer);
3035 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2460} 3036}
2461 3037
2462static void noinline 3038static void noinline
2463infy_del (EV_P_ ev_stat *w) 3039infy_del (EV_P_ ev_stat *w)
2464{ 3040{
… …
2467 3043
2468 if (wd < 0) 3044 if (wd < 0)
2469 return; 3045 return;
2470 3046
2471 w->wd = -2; 3047 w->wd = -2;
2472 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3048 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2473 wlist_del (&fs_hash [slot].head, (WL)w); 3049 wlist_del (&fs_hash [slot].head, (WL)w);
2474 3050
2475 /* remove this watcher, if others are watching it, they will rearm */ 3051 /* remove this watcher, if others are watching it, they will rearm */
2476 inotify_rm_watch (fs_fd, wd); 3052 inotify_rm_watch (fs_fd, wd);
2477} 3053}
… …
2479static void noinline 3055static void noinline
2480infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3056infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2481{ 3057{
2482 if (slot < 0) 3058 if (slot < 0)
2483 /* overflow, need to check for all hash slots */ 3059 /* overflow, need to check for all hash slots */
2484 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3060 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2485 infy_wd (EV_A_ slot, wd, ev); 3061 infy_wd (EV_A_ slot, wd, ev);
2486 else 3062 else
2487 { 3063 {
2488 WL w_; 3064 WL w_;
2489 3065
2490 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3066 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2491 { 3067 {
2492 ev_stat *w = (ev_stat *)w_; 3068 ev_stat *w = (ev_stat *)w_;
2493 w_ = w_->next; /* lets us remove this watcher and all before it */ 3069 w_ = w_->next; /* lets us remove this watcher and all before it */
2494 3070
2495 if (w->wd == wd || wd == -1) 3071 if (w->wd == wd || wd == -1)
2496 { 3072 {
2497 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3073 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2498 { 3074 {
3075 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2499 w->wd = -1; 3076 w->wd = -1;
2500 infy_add (EV_A_ w); /* re-add, no matter what */ 3077 infy_add (EV_A_ w); /* re-add, no matter what */
2501 } 3078 }
2502 3079
2503 stat_timer_cb (EV_A_ &w->timer, 0); 3080 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2508 3085
2509static void 3086static void
2510infy_cb (EV_P_ ev_io *w, int revents) 3087infy_cb (EV_P_ ev_io *w, int revents)
2511{ 3088{
2512 char buf [EV_INOTIFY_BUFSIZE]; 3089 char buf [EV_INOTIFY_BUFSIZE];
2513 struct inotify_event *ev = (struct inotify_event *)buf;
2514 int ofs; 3090 int ofs;
2515 int len = read (fs_fd, buf, sizeof (buf)); 3091 int len = read (fs_fd, buf, sizeof (buf));
2516 3092
2517 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3093 for (ofs = 0; ofs < len; )
3094 {
3095 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2518 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3096 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3097 ofs += sizeof (struct inotify_event) + ev->len;
3098 }
2519} 3099}
2520 3100
2521void inline_size 3101inline_size void
2522infy_init (EV_P) 3102ev_check_2625 (EV_P)
2523{ 3103{
2524 if (fs_fd != -2)
2525 return;
2526
2527 /* kernels < 2.6.25 are borked 3104 /* kernels < 2.6.25 are borked
2528 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3105 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2529 */ 3106 */
2530 { 3107 if (ev_linux_version () < 0x020619)
2531 struct utsname buf; 3108 return;
2532 int major, minor, micro;
2533 3109
3110 fs_2625 = 1;
3111}
3112
3113inline_size int
3114infy_newfd (void)
3115{
3116#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3117 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3118 if (fd >= 0)
3119 return fd;
3120#endif
3121 return inotify_init ();
3122}
3123
3124inline_size void
3125infy_init (EV_P)
3126{
3127 if (fs_fd != -2)
3128 return;
3129
2534 fs_fd = -1; 3130 fs_fd = -1;
2535 3131
2536 if (uname (&buf)) 3132 ev_check_2625 (EV_A);
2537 return;
2538 3133
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 (); 3134 fs_fd = infy_newfd ();
2549 3135
2550 if (fs_fd >= 0) 3136 if (fs_fd >= 0)
2551 { 3137 {
3138 fd_intern (fs_fd);
2552 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3139 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2553 ev_set_priority (&fs_w, EV_MAXPRI); 3140 ev_set_priority (&fs_w, EV_MAXPRI);
2554 ev_io_start (EV_A_ &fs_w); 3141 ev_io_start (EV_A_ &fs_w);
3142 ev_unref (EV_A);
2555 } 3143 }
2556} 3144}
2557 3145
2558void inline_size 3146inline_size void
2559infy_fork (EV_P) 3147infy_fork (EV_P)
2560{ 3148{
2561 int slot; 3149 int slot;
2562 3150
2563 if (fs_fd < 0) 3151 if (fs_fd < 0)
2564 return; 3152 return;
2565 3153
3154 ev_ref (EV_A);
3155 ev_io_stop (EV_A_ &fs_w);
2566 close (fs_fd); 3156 close (fs_fd);
2567 fs_fd = inotify_init (); 3157 fs_fd = infy_newfd ();
2568 3158
3159 if (fs_fd >= 0)
3160 {
3161 fd_intern (fs_fd);
3162 ev_io_set (&fs_w, fs_fd, EV_READ);
3163 ev_io_start (EV_A_ &fs_w);
3164 ev_unref (EV_A);
3165 }
3166
2569 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3167 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2570 { 3168 {
2571 WL w_ = fs_hash [slot].head; 3169 WL w_ = fs_hash [slot].head;
2572 fs_hash [slot].head = 0; 3170 fs_hash [slot].head = 0;
2573 3171
2574 while (w_) 3172 while (w_)
… …
2579 w->wd = -1; 3177 w->wd = -1;
2580 3178
2581 if (fs_fd >= 0) 3179 if (fs_fd >= 0)
2582 infy_add (EV_A_ w); /* re-add, no matter what */ 3180 infy_add (EV_A_ w); /* re-add, no matter what */
2583 else 3181 else
3182 {
3183 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3184 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2584 ev_timer_start (EV_A_ &w->timer); 3185 ev_timer_again (EV_A_ &w->timer);
3186 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3187 }
2585 } 3188 }
2586 } 3189 }
2587} 3190}
2588 3191
2589#endif 3192#endif
… …
2606static void noinline 3209static void noinline
2607stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3210stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2608{ 3211{
2609 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3212 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2610 3213
2611 /* we copy this here each the time so that */ 3214 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); 3215 ev_stat_stat (EV_A_ w);
2615 3216
2616 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3217 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2617 if ( 3218 if (
2618 w->prev.st_dev != w->attr.st_dev 3219 prev.st_dev != w->attr.st_dev
2619 || w->prev.st_ino != w->attr.st_ino 3220 || prev.st_ino != w->attr.st_ino
2620 || w->prev.st_mode != w->attr.st_mode 3221 || prev.st_mode != w->attr.st_mode
2621 || w->prev.st_nlink != w->attr.st_nlink 3222 || prev.st_nlink != w->attr.st_nlink
2622 || w->prev.st_uid != w->attr.st_uid 3223 || prev.st_uid != w->attr.st_uid
2623 || w->prev.st_gid != w->attr.st_gid 3224 || prev.st_gid != w->attr.st_gid
2624 || w->prev.st_rdev != w->attr.st_rdev 3225 || prev.st_rdev != w->attr.st_rdev
2625 || w->prev.st_size != w->attr.st_size 3226 || prev.st_size != w->attr.st_size
2626 || w->prev.st_atime != w->attr.st_atime 3227 || prev.st_atime != w->attr.st_atime
2627 || w->prev.st_mtime != w->attr.st_mtime 3228 || prev.st_mtime != w->attr.st_mtime
2628 || w->prev.st_ctime != w->attr.st_ctime 3229 || prev.st_ctime != w->attr.st_ctime
2629 ) { 3230 ) {
3231 /* we only update w->prev on actual differences */
3232 /* in case we test more often than invoke the callback, */
3233 /* to ensure that prev is always different to attr */
3234 w->prev = prev;
3235
2630 #if EV_USE_INOTIFY 3236 #if EV_USE_INOTIFY
2631 if (fs_fd >= 0) 3237 if (fs_fd >= 0)
2632 { 3238 {
2633 infy_del (EV_A_ w); 3239 infy_del (EV_A_ w);
2634 infy_add (EV_A_ w); 3240 infy_add (EV_A_ w);
… …
2644ev_stat_start (EV_P_ ev_stat *w) 3250ev_stat_start (EV_P_ ev_stat *w)
2645{ 3251{
2646 if (expect_false (ev_is_active (w))) 3252 if (expect_false (ev_is_active (w)))
2647 return; 3253 return;
2648 3254
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); 3255 ev_stat_stat (EV_A_ w);
2654 3256
3257 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2655 if (w->interval < MIN_STAT_INTERVAL) 3258 w->interval = MIN_STAT_INTERVAL;
2656 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2657 3259
2658 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3260 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2659 ev_set_priority (&w->timer, ev_priority (w)); 3261 ev_set_priority (&w->timer, ev_priority (w));
2660 3262
2661#if EV_USE_INOTIFY 3263#if EV_USE_INOTIFY
2662 infy_init (EV_A); 3264 infy_init (EV_A);
2663 3265
2664 if (fs_fd >= 0) 3266 if (fs_fd >= 0)
2665 infy_add (EV_A_ w); 3267 infy_add (EV_A_ w);
2666 else 3268 else
2667#endif 3269#endif
3270 {
2668 ev_timer_start (EV_A_ &w->timer); 3271 ev_timer_again (EV_A_ &w->timer);
3272 ev_unref (EV_A);
3273 }
2669 3274
2670 ev_start (EV_A_ (W)w, 1); 3275 ev_start (EV_A_ (W)w, 1);
2671 3276
2672 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2673} 3278}
… …
2682 EV_FREQUENT_CHECK; 3287 EV_FREQUENT_CHECK;
2683 3288
2684#if EV_USE_INOTIFY 3289#if EV_USE_INOTIFY
2685 infy_del (EV_A_ w); 3290 infy_del (EV_A_ w);
2686#endif 3291#endif
3292
3293 if (ev_is_active (&w->timer))
3294 {
3295 ev_ref (EV_A);
2687 ev_timer_stop (EV_A_ &w->timer); 3296 ev_timer_stop (EV_A_ &w->timer);
3297 }
2688 3298
2689 ev_stop (EV_A_ (W)w); 3299 ev_stop (EV_A_ (W)w);
2690 3300
2691 EV_FREQUENT_CHECK; 3301 EV_FREQUENT_CHECK;
2692} 3302}
… …
2737 3347
2738 EV_FREQUENT_CHECK; 3348 EV_FREQUENT_CHECK;
2739} 3349}
2740#endif 3350#endif
2741 3351
3352#if EV_PREPARE_ENABLE
2742void 3353void
2743ev_prepare_start (EV_P_ ev_prepare *w) 3354ev_prepare_start (EV_P_ ev_prepare *w)
2744{ 3355{
2745 if (expect_false (ev_is_active (w))) 3356 if (expect_false (ev_is_active (w)))
2746 return; 3357 return;
… …
2772 3383
2773 ev_stop (EV_A_ (W)w); 3384 ev_stop (EV_A_ (W)w);
2774 3385
2775 EV_FREQUENT_CHECK; 3386 EV_FREQUENT_CHECK;
2776} 3387}
3388#endif
2777 3389
3390#if EV_CHECK_ENABLE
2778void 3391void
2779ev_check_start (EV_P_ ev_check *w) 3392ev_check_start (EV_P_ ev_check *w)
2780{ 3393{
2781 if (expect_false (ev_is_active (w))) 3394 if (expect_false (ev_is_active (w)))
2782 return; 3395 return;
… …
2808 3421
2809 ev_stop (EV_A_ (W)w); 3422 ev_stop (EV_A_ (W)w);
2810 3423
2811 EV_FREQUENT_CHECK; 3424 EV_FREQUENT_CHECK;
2812} 3425}
3426#endif
2813 3427
2814#if EV_EMBED_ENABLE 3428#if EV_EMBED_ENABLE
2815void noinline 3429void noinline
2816ev_embed_sweep (EV_P_ ev_embed *w) 3430ev_embed_sweep (EV_P_ ev_embed *w)
2817{ 3431{
2818 ev_loop (w->other, EVLOOP_NONBLOCK); 3432 ev_run (w->other, EVRUN_NOWAIT);
2819} 3433}
2820 3434
2821static void 3435static void
2822embed_io_cb (EV_P_ ev_io *io, int revents) 3436embed_io_cb (EV_P_ ev_io *io, int revents)
2823{ 3437{
2824 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3438 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2825 3439
2826 if (ev_cb (w)) 3440 if (ev_cb (w))
2827 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3441 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2828 else 3442 else
2829 ev_loop (w->other, EVLOOP_NONBLOCK); 3443 ev_run (w->other, EVRUN_NOWAIT);
2830} 3444}
2831 3445
2832static void 3446static void
2833embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3447embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2834{ 3448{
2835 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3449 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2836 3450
2837 { 3451 {
2838 struct ev_loop *loop = w->other; 3452 EV_P = w->other;
2839 3453
2840 while (fdchangecnt) 3454 while (fdchangecnt)
2841 { 3455 {
2842 fd_reify (EV_A); 3456 fd_reify (EV_A);
2843 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3457 ev_run (EV_A_ EVRUN_NOWAIT);
2844 } 3458 }
2845 } 3459 }
2846} 3460}
2847 3461
2848static void 3462static void
2849embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3463embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2850{ 3464{
2851 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3465 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2852 3466
3467 ev_embed_stop (EV_A_ w);
3468
2853 { 3469 {
2854 struct ev_loop *loop = w->other; 3470 EV_P = w->other;
2855 3471
2856 ev_loop_fork (EV_A); 3472 ev_loop_fork (EV_A);
3473 ev_run (EV_A_ EVRUN_NOWAIT);
2857 } 3474 }
3475
3476 ev_embed_start (EV_A_ w);
2858} 3477}
2859 3478
2860#if 0 3479#if 0
2861static void 3480static void
2862embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3481embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2870{ 3489{
2871 if (expect_false (ev_is_active (w))) 3490 if (expect_false (ev_is_active (w)))
2872 return; 3491 return;
2873 3492
2874 { 3493 {
2875 struct ev_loop *loop = w->other; 3494 EV_P = w->other;
2876 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3495 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2877 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3496 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2878 } 3497 }
2879 3498
2880 EV_FREQUENT_CHECK; 3499 EV_FREQUENT_CHECK;
2881 3500
… …
2907 3526
2908 ev_io_stop (EV_A_ &w->io); 3527 ev_io_stop (EV_A_ &w->io);
2909 ev_prepare_stop (EV_A_ &w->prepare); 3528 ev_prepare_stop (EV_A_ &w->prepare);
2910 ev_fork_stop (EV_A_ &w->fork); 3529 ev_fork_stop (EV_A_ &w->fork);
2911 3530
3531 ev_stop (EV_A_ (W)w);
3532
2912 EV_FREQUENT_CHECK; 3533 EV_FREQUENT_CHECK;
2913} 3534}
2914#endif 3535#endif
2915 3536
2916#if EV_FORK_ENABLE 3537#if EV_FORK_ENABLE
… …
2949 3570
2950 EV_FREQUENT_CHECK; 3571 EV_FREQUENT_CHECK;
2951} 3572}
2952#endif 3573#endif
2953 3574
2954#if EV_ASYNC_ENABLE 3575#if EV_CLEANUP_ENABLE
2955void 3576void
2956ev_async_start (EV_P_ ev_async *w) 3577ev_cleanup_start (EV_P_ ev_cleanup *w)
2957{ 3578{
2958 if (expect_false (ev_is_active (w))) 3579 if (expect_false (ev_is_active (w)))
2959 return; 3580 return;
3581
3582 EV_FREQUENT_CHECK;
3583
3584 ev_start (EV_A_ (W)w, ++cleanupcnt);
3585 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3586 cleanups [cleanupcnt - 1] = w;
3587
3588 EV_FREQUENT_CHECK;
3589}
3590
3591void
3592ev_cleanup_stop (EV_P_ ev_cleanup *w)
3593{
3594 clear_pending (EV_A_ (W)w);
3595 if (expect_false (!ev_is_active (w)))
3596 return;
3597
3598 EV_FREQUENT_CHECK;
3599
3600 {
3601 int active = ev_active (w);
3602
3603 cleanups [active - 1] = cleanups [--cleanupcnt];
3604 ev_active (cleanups [active - 1]) = active;
3605 }
3606
3607 ev_stop (EV_A_ (W)w);
3608
3609 EV_FREQUENT_CHECK;
3610}
3611#endif
3612
3613#if EV_ASYNC_ENABLE
3614void
3615ev_async_start (EV_P_ ev_async *w)
3616{
3617 if (expect_false (ev_is_active (w)))
3618 return;
3619
3620 w->sent = 0;
2960 3621
2961 evpipe_init (EV_A); 3622 evpipe_init (EV_A);
2962 3623
2963 EV_FREQUENT_CHECK; 3624 EV_FREQUENT_CHECK;
2964 3625
… …
2992 3653
2993void 3654void
2994ev_async_send (EV_P_ ev_async *w) 3655ev_async_send (EV_P_ ev_async *w)
2995{ 3656{
2996 w->sent = 1; 3657 w->sent = 1;
2997 evpipe_write (EV_A_ &gotasync); 3658 evpipe_write (EV_A_ &async_pending);
2998} 3659}
2999#endif 3660#endif
3000 3661
3001/*****************************************************************************/ 3662/*****************************************************************************/
3002 3663
… …
3042{ 3703{
3043 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3704 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3044 3705
3045 if (expect_false (!once)) 3706 if (expect_false (!once))
3046 { 3707 {
3047 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3708 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3048 return; 3709 return;
3049 } 3710 }
3050 3711
3051 once->cb = cb; 3712 once->cb = cb;
3052 once->arg = arg; 3713 once->arg = arg;
… …
3064 ev_timer_set (&once->to, timeout, 0.); 3725 ev_timer_set (&once->to, timeout, 0.);
3065 ev_timer_start (EV_A_ &once->to); 3726 ev_timer_start (EV_A_ &once->to);
3066 } 3727 }
3067} 3728}
3068 3729
3730/*****************************************************************************/
3731
3732#if EV_WALK_ENABLE
3733void
3734ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3735{
3736 int i, j;
3737 ev_watcher_list *wl, *wn;
3738
3739 if (types & (EV_IO | EV_EMBED))
3740 for (i = 0; i < anfdmax; ++i)
3741 for (wl = anfds [i].head; wl; )
3742 {
3743 wn = wl->next;
3744
3745#if EV_EMBED_ENABLE
3746 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3747 {
3748 if (types & EV_EMBED)
3749 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3750 }
3751 else
3752#endif
3753#if EV_USE_INOTIFY
3754 if (ev_cb ((ev_io *)wl) == infy_cb)
3755 ;
3756 else
3757#endif
3758 if ((ev_io *)wl != &pipe_w)
3759 if (types & EV_IO)
3760 cb (EV_A_ EV_IO, wl);
3761
3762 wl = wn;
3763 }
3764
3765 if (types & (EV_TIMER | EV_STAT))
3766 for (i = timercnt + HEAP0; i-- > HEAP0; )
3767#if EV_STAT_ENABLE
3768 /*TODO: timer is not always active*/
3769 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3770 {
3771 if (types & EV_STAT)
3772 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3773 }
3774 else
3775#endif
3776 if (types & EV_TIMER)
3777 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3778
3779#if EV_PERIODIC_ENABLE
3780 if (types & EV_PERIODIC)
3781 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3782 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3783#endif
3784
3785#if EV_IDLE_ENABLE
3786 if (types & EV_IDLE)
3787 for (j = NUMPRI; i--; )
3788 for (i = idlecnt [j]; i--; )
3789 cb (EV_A_ EV_IDLE, idles [j][i]);
3790#endif
3791
3792#if EV_FORK_ENABLE
3793 if (types & EV_FORK)
3794 for (i = forkcnt; i--; )
3795 if (ev_cb (forks [i]) != embed_fork_cb)
3796 cb (EV_A_ EV_FORK, forks [i]);
3797#endif
3798
3799#if EV_ASYNC_ENABLE
3800 if (types & EV_ASYNC)
3801 for (i = asynccnt; i--; )
3802 cb (EV_A_ EV_ASYNC, asyncs [i]);
3803#endif
3804
3805#if EV_PREPARE_ENABLE
3806 if (types & EV_PREPARE)
3807 for (i = preparecnt; i--; )
3808# if EV_EMBED_ENABLE
3809 if (ev_cb (prepares [i]) != embed_prepare_cb)
3810# endif
3811 cb (EV_A_ EV_PREPARE, prepares [i]);
3812#endif
3813
3814#if EV_CHECK_ENABLE
3815 if (types & EV_CHECK)
3816 for (i = checkcnt; i--; )
3817 cb (EV_A_ EV_CHECK, checks [i]);
3818#endif
3819
3820#if EV_SIGNAL_ENABLE
3821 if (types & EV_SIGNAL)
3822 for (i = 0; i < EV_NSIG - 1; ++i)
3823 for (wl = signals [i].head; wl; )
3824 {
3825 wn = wl->next;
3826 cb (EV_A_ EV_SIGNAL, wl);
3827 wl = wn;
3828 }
3829#endif
3830
3831#if EV_CHILD_ENABLE
3832 if (types & EV_CHILD)
3833 for (i = (EV_PID_HASHSIZE); i--; )
3834 for (wl = childs [i]; wl; )
3835 {
3836 wn = wl->next;
3837 cb (EV_A_ EV_CHILD, wl);
3838 wl = wn;
3839 }
3840#endif
3841/* EV_STAT 0x00001000 /* stat data changed */
3842/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3843}
3844#endif
3845
3069#if EV_MULTIPLICITY 3846#if EV_MULTIPLICITY
3070 #include "ev_wrap.h" 3847 #include "ev_wrap.h"
3071#endif 3848#endif
3072 3849
3073#ifdef __cplusplus 3850EV_CPP(})
3074}
3075#endif
3076 3851

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