ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.263 by root, Wed Oct 1 18:50:03 2008 UTC vs.
Revision 1.356 by root, Fri Oct 22 11:21:52 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
387# include <sys/statfs.h>
291# include <sys/inotify.h> 388# include <sys/inotify.h>
292/* 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 */
293# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
294# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
295# define EV_USE_INOTIFY 0 392# define EV_USE_INOTIFY 0
… …
301#endif 398#endif
302 399
303#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
304/* 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 */
305# include <stdint.h> 402# include <stdint.h>
306# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
307extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
308# endif 405# endif
309int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
310# ifdef __cplusplus 407# ifdef O_CLOEXEC
311} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
312# 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};
313#endif 436#endif
314 437
315/**/ 438/**/
316 439
317#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
318# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
319#else 442#else
320# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
321#endif 444#endif
322 445
323/* 446/*
… …
330 */ 453 */
331#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
332 455
333#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) */
334#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) */
335/*#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)
336 461
337#if __GNUC__ >= 4 462#if __GNUC__ >= 4
338# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
339# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
340#else 465#else
… …
347 472
348#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
349#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
350#define inline_size static inline 475#define inline_size static inline
351 476
352#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
353# 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)
354#else 487#else
355# define inline_speed static inline
356#endif
357
358#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
359#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
360 490
361#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
362#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
363 493
364typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
366typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
367 497
368#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
369#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
370 500
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
371#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
372/* sig_atomic_t is used to avoid per-thread variables or locking but still */
373/* giving it a reasonably high chance of working on typical architetcures */
374static 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)
375#endif 519#endif
376 520
377#ifdef _WIN32 521#ifdef _WIN32
378# include "ev_win32.c" 522# include "ev_win32.c"
379#endif 523#endif
380 524
381/*****************************************************************************/ 525/*****************************************************************************/
382 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 struct utsname buf;
536 unsigned int v;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
576
383static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
384 578
385void 579void
386ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
387{ 581{
388 syserr_cb = cb; 582 syserr_cb = cb;
389} 583}
390 584
391static void noinline 585static void noinline
392syserr (const char *msg) 586ev_syserr (const char *msg)
393{ 587{
394 if (!msg) 588 if (!msg)
395 msg = "(libev) system error"; 589 msg = "(libev) system error";
396 590
397 if (syserr_cb) 591 if (syserr_cb)
398 syserr_cb (msg); 592 syserr_cb (msg);
399 else 593 else
400 { 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
401 perror (msg); 603 perror (msg);
604#endif
402 abort (); 605 abort ();
403 } 606 }
404} 607}
405 608
406static void * 609static void *
407ev_realloc_emul (void *ptr, long size) 610ev_realloc_emul (void *ptr, long size)
408{ 611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
409 /* some systems, notably openbsd and darwin, fail to properly 615 /* some systems, notably openbsd and darwin, fail to properly
410 * 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
411 * the single unix specification, so work around them here. 617 * the single unix specification, so work around them here.
412 */ 618 */
413 619
414 if (size) 620 if (size)
415 return realloc (ptr, size); 621 return realloc (ptr, size);
416 622
417 free (ptr); 623 free (ptr);
418 return 0; 624 return 0;
625#endif
419} 626}
420 627
421static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
422 629
423void 630void
… …
431{ 638{
432 ptr = alloc (ptr, size); 639 ptr = alloc (ptr, size);
433 640
434 if (!ptr && size) 641 if (!ptr && size)
435 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
436 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
437 abort (); 648 abort ();
438 } 649 }
439 650
440 return ptr; 651 return ptr;
441} 652}
… …
443#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
444#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
445 656
446/*****************************************************************************/ 657/*****************************************************************************/
447 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
448typedef struct 663typedef struct
449{ 664{
450 WL head; 665 WL head;
451 unsigned char events; 666 unsigned char events; /* the events watched for */
667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
452 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
453#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET
454 SOCKET handle; 674 SOCKET handle;
455#endif 675#endif
456} ANFD; 676} ANFD;
457 677
678/* stores the pending event set for a given watcher */
458typedef struct 679typedef struct
459{ 680{
460 W w; 681 W w;
461 int events; 682 int events; /* the pending event set for the given watcher */
462} ANPENDING; 683} ANPENDING;
463 684
464#if EV_USE_INOTIFY 685#if EV_USE_INOTIFY
465/* hash table entry per inotify-id */ 686/* hash table entry per inotify-id */
466typedef struct 687typedef struct
… …
469} ANFS; 690} ANFS;
470#endif 691#endif
471 692
472/* Heap Entry */ 693/* Heap Entry */
473#if EV_HEAP_CACHE_AT 694#if EV_HEAP_CACHE_AT
695 /* a heap element */
474 typedef struct { 696 typedef struct {
475 ev_tstamp at; 697 ev_tstamp at;
476 WT w; 698 WT w;
477 } ANHE; 699 } ANHE;
478 700
479 #define ANHE_w(he) (he).w /* access watcher, read-write */ 701 #define ANHE_w(he) (he).w /* access watcher, read-write */
480 #define ANHE_at(he) (he).at /* access cached at, read-only */ 702 #define ANHE_at(he) (he).at /* access cached at, read-only */
481 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 703 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
482#else 704#else
705 /* a heap element */
483 typedef WT ANHE; 706 typedef WT ANHE;
484 707
485 #define ANHE_w(he) (he) 708 #define ANHE_w(he) (he)
486 #define ANHE_at(he) (he)->at 709 #define ANHE_at(he) (he)->at
487 #define ANHE_at_cache(he) 710 #define ANHE_at_cache(he)
… …
511 734
512 static int ev_default_loop_ptr; 735 static int ev_default_loop_ptr;
513 736
514#endif 737#endif
515 738
739#if EV_FEATURE_API
740# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
741# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
742# define EV_INVOKE_PENDING invoke_cb (EV_A)
743#else
744# define EV_RELEASE_CB (void)0
745# define EV_ACQUIRE_CB (void)0
746# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
747#endif
748
749#define EVBREAK_RECURSE 0x80
750
516/*****************************************************************************/ 751/*****************************************************************************/
517 752
753#ifndef EV_HAVE_EV_TIME
518ev_tstamp 754ev_tstamp
519ev_time (void) 755ev_time (void)
520{ 756{
521#if EV_USE_REALTIME 757#if EV_USE_REALTIME
758 if (expect_true (have_realtime))
759 {
522 struct timespec ts; 760 struct timespec ts;
523 clock_gettime (CLOCK_REALTIME, &ts); 761 clock_gettime (CLOCK_REALTIME, &ts);
524 return ts.tv_sec + ts.tv_nsec * 1e-9; 762 return ts.tv_sec + ts.tv_nsec * 1e-9;
525#else 763 }
764#endif
765
526 struct timeval tv; 766 struct timeval tv;
527 gettimeofday (&tv, 0); 767 gettimeofday (&tv, 0);
528 return tv.tv_sec + tv.tv_usec * 1e-6; 768 return tv.tv_sec + tv.tv_usec * 1e-6;
529#endif
530} 769}
770#endif
531 771
532ev_tstamp inline_size 772inline_size ev_tstamp
533get_clock (void) 773get_clock (void)
534{ 774{
535#if EV_USE_MONOTONIC 775#if EV_USE_MONOTONIC
536 if (expect_true (have_monotonic)) 776 if (expect_true (have_monotonic))
537 { 777 {
… …
558 if (delay > 0.) 798 if (delay > 0.)
559 { 799 {
560#if EV_USE_NANOSLEEP 800#if EV_USE_NANOSLEEP
561 struct timespec ts; 801 struct timespec ts;
562 802
563 ts.tv_sec = (time_t)delay; 803 EV_TS_SET (ts, delay);
564 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
565
566 nanosleep (&ts, 0); 804 nanosleep (&ts, 0);
567#elif defined(_WIN32) 805#elif defined(_WIN32)
568 Sleep ((unsigned long)(delay * 1e3)); 806 Sleep ((unsigned long)(delay * 1e3));
569#else 807#else
570 struct timeval tv; 808 struct timeval tv;
571 809
572 tv.tv_sec = (time_t)delay;
573 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
574
575 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 810 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
576 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 811 /* something not guaranteed by newer posix versions, but guaranteed */
577 /* by older ones */ 812 /* by older ones */
813 EV_TV_SET (tv, delay);
578 select (0, 0, 0, 0, &tv); 814 select (0, 0, 0, 0, &tv);
579#endif 815#endif
580 } 816 }
581} 817}
582 818
583/*****************************************************************************/ 819/*****************************************************************************/
584 820
585#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 821#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
586 822
587int inline_size 823/* find a suitable new size for the given array, */
824/* hopefully by rounding to a nice-to-malloc size */
825inline_size int
588array_nextsize (int elem, int cur, int cnt) 826array_nextsize (int elem, int cur, int cnt)
589{ 827{
590 int ncur = cur + 1; 828 int ncur = cur + 1;
591 829
592 do 830 do
… …
609array_realloc (int elem, void *base, int *cur, int cnt) 847array_realloc (int elem, void *base, int *cur, int cnt)
610{ 848{
611 *cur = array_nextsize (elem, *cur, cnt); 849 *cur = array_nextsize (elem, *cur, cnt);
612 return ev_realloc (base, elem * *cur); 850 return ev_realloc (base, elem * *cur);
613} 851}
852
853#define array_init_zero(base,count) \
854 memset ((void *)(base), 0, sizeof (*(base)) * (count))
614 855
615#define array_needsize(type,base,cur,cnt,init) \ 856#define array_needsize(type,base,cur,cnt,init) \
616 if (expect_false ((cnt) > (cur))) \ 857 if (expect_false ((cnt) > (cur))) \
617 { \ 858 { \
618 int ocur_ = (cur); \ 859 int ocur_ = (cur); \
… …
630 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 871 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
631 } 872 }
632#endif 873#endif
633 874
634#define array_free(stem, idx) \ 875#define array_free(stem, idx) \
635 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 876 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
636 877
637/*****************************************************************************/ 878/*****************************************************************************/
879
880/* dummy callback for pending events */
881static void noinline
882pendingcb (EV_P_ ev_prepare *w, int revents)
883{
884}
638 885
639void noinline 886void noinline
640ev_feed_event (EV_P_ void *w, int revents) 887ev_feed_event (EV_P_ void *w, int revents)
641{ 888{
642 W w_ = (W)w; 889 W w_ = (W)w;
… …
651 pendings [pri][w_->pending - 1].w = w_; 898 pendings [pri][w_->pending - 1].w = w_;
652 pendings [pri][w_->pending - 1].events = revents; 899 pendings [pri][w_->pending - 1].events = revents;
653 } 900 }
654} 901}
655 902
656void inline_speed 903inline_speed void
904feed_reverse (EV_P_ W w)
905{
906 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
907 rfeeds [rfeedcnt++] = w;
908}
909
910inline_size void
911feed_reverse_done (EV_P_ int revents)
912{
913 do
914 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
915 while (rfeedcnt);
916}
917
918inline_speed void
657queue_events (EV_P_ W *events, int eventcnt, int type) 919queue_events (EV_P_ W *events, int eventcnt, int type)
658{ 920{
659 int i; 921 int i;
660 922
661 for (i = 0; i < eventcnt; ++i) 923 for (i = 0; i < eventcnt; ++i)
662 ev_feed_event (EV_A_ events [i], type); 924 ev_feed_event (EV_A_ events [i], type);
663} 925}
664 926
665/*****************************************************************************/ 927/*****************************************************************************/
666 928
667void inline_size 929inline_speed void
668anfds_init (ANFD *base, int count)
669{
670 while (count--)
671 {
672 base->head = 0;
673 base->events = EV_NONE;
674 base->reify = 0;
675
676 ++base;
677 }
678}
679
680void inline_speed
681fd_event (EV_P_ int fd, int revents) 930fd_event_nocheck (EV_P_ int fd, int revents)
682{ 931{
683 ANFD *anfd = anfds + fd; 932 ANFD *anfd = anfds + fd;
684 ev_io *w; 933 ev_io *w;
685 934
686 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 935 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
690 if (ev) 939 if (ev)
691 ev_feed_event (EV_A_ (W)w, ev); 940 ev_feed_event (EV_A_ (W)w, ev);
692 } 941 }
693} 942}
694 943
944/* do not submit kernel events for fds that have reify set */
945/* because that means they changed while we were polling for new events */
946inline_speed void
947fd_event (EV_P_ int fd, int revents)
948{
949 ANFD *anfd = anfds + fd;
950
951 if (expect_true (!anfd->reify))
952 fd_event_nocheck (EV_A_ fd, revents);
953}
954
695void 955void
696ev_feed_fd_event (EV_P_ int fd, int revents) 956ev_feed_fd_event (EV_P_ int fd, int revents)
697{ 957{
698 if (fd >= 0 && fd < anfdmax) 958 if (fd >= 0 && fd < anfdmax)
699 fd_event (EV_A_ fd, revents); 959 fd_event_nocheck (EV_A_ fd, revents);
700} 960}
701 961
702void inline_size 962/* make sure the external fd watch events are in-sync */
963/* with the kernel/libev internal state */
964inline_size void
703fd_reify (EV_P) 965fd_reify (EV_P)
704{ 966{
705 int i; 967 int i;
706 968
707 for (i = 0; i < fdchangecnt; ++i) 969 for (i = 0; i < fdchangecnt; ++i)
708 { 970 {
709 int fd = fdchanges [i]; 971 int fd = fdchanges [i];
710 ANFD *anfd = anfds + fd; 972 ANFD *anfd = anfds + fd;
711 ev_io *w; 973 ev_io *w;
712 974
713 unsigned char events = 0; 975 unsigned char o_events = anfd->events;
976 unsigned char o_reify = anfd->reify;
714 977
715 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 978 anfd->reify = 0;
716 events |= (unsigned char)w->events;
717 979
718#if EV_SELECT_IS_WINSOCKET 980#if EV_SELECT_IS_WINSOCKET
719 if (events) 981 if (o_reify & EV__IOFDSET)
720 { 982 {
721 unsigned long arg; 983 unsigned long arg;
722 #ifdef EV_FD_TO_WIN32_HANDLE
723 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 984 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
724 #else
725 anfd->handle = _get_osfhandle (fd);
726 #endif
727 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 985 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
728 } 986 }
729#endif 987#endif
730 988
989 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
731 { 990 {
732 unsigned char o_events = anfd->events;
733 unsigned char o_reify = anfd->reify;
734
735 anfd->reify = 0;
736 anfd->events = events; 991 anfd->events = 0;
737 992
738 if (o_events != events || o_reify & EV_IOFDSET) 993 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
994 anfd->events |= (unsigned char)w->events;
995
996 if (o_events != anfd->events)
997 o_reify = EV__IOFDSET; /* actually |= */
998 }
999
1000 if (o_reify & EV__IOFDSET)
739 backend_modify (EV_A_ fd, o_events, events); 1001 backend_modify (EV_A_ fd, o_events, anfd->events);
740 }
741 } 1002 }
742 1003
743 fdchangecnt = 0; 1004 fdchangecnt = 0;
744} 1005}
745 1006
746void inline_size 1007/* something about the given fd changed */
1008inline_size void
747fd_change (EV_P_ int fd, int flags) 1009fd_change (EV_P_ int fd, int flags)
748{ 1010{
749 unsigned char reify = anfds [fd].reify; 1011 unsigned char reify = anfds [fd].reify;
750 anfds [fd].reify |= flags; 1012 anfds [fd].reify |= flags;
751 1013
… …
755 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1017 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
756 fdchanges [fdchangecnt - 1] = fd; 1018 fdchanges [fdchangecnt - 1] = fd;
757 } 1019 }
758} 1020}
759 1021
760void inline_speed 1022/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1023inline_speed void
761fd_kill (EV_P_ int fd) 1024fd_kill (EV_P_ int fd)
762{ 1025{
763 ev_io *w; 1026 ev_io *w;
764 1027
765 while ((w = (ev_io *)anfds [fd].head)) 1028 while ((w = (ev_io *)anfds [fd].head))
… …
767 ev_io_stop (EV_A_ w); 1030 ev_io_stop (EV_A_ w);
768 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1031 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
769 } 1032 }
770} 1033}
771 1034
772int inline_size 1035/* check whether the given fd is actually valid, for error recovery */
1036inline_size int
773fd_valid (int fd) 1037fd_valid (int fd)
774{ 1038{
775#ifdef _WIN32 1039#ifdef _WIN32
776 return _get_osfhandle (fd) != -1; 1040 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
777#else 1041#else
778 return fcntl (fd, F_GETFD) != -1; 1042 return fcntl (fd, F_GETFD) != -1;
779#endif 1043#endif
780} 1044}
781 1045
… …
799 1063
800 for (fd = anfdmax; fd--; ) 1064 for (fd = anfdmax; fd--; )
801 if (anfds [fd].events) 1065 if (anfds [fd].events)
802 { 1066 {
803 fd_kill (EV_A_ fd); 1067 fd_kill (EV_A_ fd);
804 return; 1068 break;
805 } 1069 }
806} 1070}
807 1071
808/* usually called after fork if backend needs to re-arm all fds from scratch */ 1072/* usually called after fork if backend needs to re-arm all fds from scratch */
809static void noinline 1073static void noinline
… …
813 1077
814 for (fd = 0; fd < anfdmax; ++fd) 1078 for (fd = 0; fd < anfdmax; ++fd)
815 if (anfds [fd].events) 1079 if (anfds [fd].events)
816 { 1080 {
817 anfds [fd].events = 0; 1081 anfds [fd].events = 0;
1082 anfds [fd].emask = 0;
818 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1083 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
819 } 1084 }
820} 1085}
821 1086
1087/* used to prepare libev internal fd's */
1088/* this is not fork-safe */
1089inline_speed void
1090fd_intern (int fd)
1091{
1092#ifdef _WIN32
1093 unsigned long arg = 1;
1094 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1095#else
1096 fcntl (fd, F_SETFD, FD_CLOEXEC);
1097 fcntl (fd, F_SETFL, O_NONBLOCK);
1098#endif
1099}
1100
822/*****************************************************************************/ 1101/*****************************************************************************/
823 1102
824/* 1103/*
825 * the heap functions want a real array index. array index 0 uis guaranteed to not 1104 * the heap functions want a real array index. array index 0 is guaranteed to not
826 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1105 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
827 * the branching factor of the d-tree. 1106 * the branching factor of the d-tree.
828 */ 1107 */
829 1108
830/* 1109/*
… …
839#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1118#define HEAP0 (DHEAP - 1) /* index of first element in heap */
840#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1119#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
841#define UPHEAP_DONE(p,k) ((p) == (k)) 1120#define UPHEAP_DONE(p,k) ((p) == (k))
842 1121
843/* away from the root */ 1122/* away from the root */
844void inline_speed 1123inline_speed void
845downheap (ANHE *heap, int N, int k) 1124downheap (ANHE *heap, int N, int k)
846{ 1125{
847 ANHE he = heap [k]; 1126 ANHE he = heap [k];
848 ANHE *E = heap + N + HEAP0; 1127 ANHE *E = heap + N + HEAP0;
849 1128
… …
889#define HEAP0 1 1168#define HEAP0 1
890#define HPARENT(k) ((k) >> 1) 1169#define HPARENT(k) ((k) >> 1)
891#define UPHEAP_DONE(p,k) (!(p)) 1170#define UPHEAP_DONE(p,k) (!(p))
892 1171
893/* away from the root */ 1172/* away from the root */
894void inline_speed 1173inline_speed void
895downheap (ANHE *heap, int N, int k) 1174downheap (ANHE *heap, int N, int k)
896{ 1175{
897 ANHE he = heap [k]; 1176 ANHE he = heap [k];
898 1177
899 for (;;) 1178 for (;;)
900 { 1179 {
901 int c = k << 1; 1180 int c = k << 1;
902 1181
903 if (c > N + HEAP0 - 1) 1182 if (c >= N + HEAP0)
904 break; 1183 break;
905 1184
906 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1185 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
907 ? 1 : 0; 1186 ? 1 : 0;
908 1187
… …
919 ev_active (ANHE_w (he)) = k; 1198 ev_active (ANHE_w (he)) = k;
920} 1199}
921#endif 1200#endif
922 1201
923/* towards the root */ 1202/* towards the root */
924void inline_speed 1203inline_speed void
925upheap (ANHE *heap, int k) 1204upheap (ANHE *heap, int k)
926{ 1205{
927 ANHE he = heap [k]; 1206 ANHE he = heap [k];
928 1207
929 for (;;) 1208 for (;;)
… …
940 1219
941 heap [k] = he; 1220 heap [k] = he;
942 ev_active (ANHE_w (he)) = k; 1221 ev_active (ANHE_w (he)) = k;
943} 1222}
944 1223
945void inline_size 1224/* move an element suitably so it is in a correct place */
1225inline_size void
946adjustheap (ANHE *heap, int N, int k) 1226adjustheap (ANHE *heap, int N, int k)
947{ 1227{
948 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1228 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
949 upheap (heap, k); 1229 upheap (heap, k);
950 else 1230 else
951 downheap (heap, N, k); 1231 downheap (heap, N, k);
952} 1232}
953 1233
954/* rebuild the heap: this function is used only once and executed rarely */ 1234/* rebuild the heap: this function is used only once and executed rarely */
955void inline_size 1235inline_size void
956reheap (ANHE *heap, int N) 1236reheap (ANHE *heap, int N)
957{ 1237{
958 int i; 1238 int i;
959 1239
960 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1240 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
963 upheap (heap, i + HEAP0); 1243 upheap (heap, i + HEAP0);
964} 1244}
965 1245
966/*****************************************************************************/ 1246/*****************************************************************************/
967 1247
1248/* associate signal watchers to a signal signal */
968typedef struct 1249typedef struct
969{ 1250{
1251 EV_ATOMIC_T pending;
1252#if EV_MULTIPLICITY
1253 EV_P;
1254#endif
970 WL head; 1255 WL head;
971 EV_ATOMIC_T gotsig;
972} ANSIG; 1256} ANSIG;
973 1257
974static ANSIG *signals; 1258static ANSIG signals [EV_NSIG - 1];
975static int signalmax;
976
977static EV_ATOMIC_T gotsig;
978
979void inline_size
980signals_init (ANSIG *base, int count)
981{
982 while (count--)
983 {
984 base->head = 0;
985 base->gotsig = 0;
986
987 ++base;
988 }
989}
990 1259
991/*****************************************************************************/ 1260/*****************************************************************************/
992 1261
993void inline_speed 1262#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
994fd_intern (int fd)
995{
996#ifdef _WIN32
997 unsigned long arg = 1;
998 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
999#else
1000 fcntl (fd, F_SETFD, FD_CLOEXEC);
1001 fcntl (fd, F_SETFL, O_NONBLOCK);
1002#endif
1003}
1004 1263
1005static void noinline 1264static void noinline
1006evpipe_init (EV_P) 1265evpipe_init (EV_P)
1007{ 1266{
1008 if (!ev_is_active (&pipeev)) 1267 if (!ev_is_active (&pipe_w))
1009 { 1268 {
1010#if EV_USE_EVENTFD 1269# if EV_USE_EVENTFD
1270 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1271 if (evfd < 0 && errno == EINVAL)
1011 if ((evfd = eventfd (0, 0)) >= 0) 1272 evfd = eventfd (0, 0);
1273
1274 if (evfd >= 0)
1012 { 1275 {
1013 evpipe [0] = -1; 1276 evpipe [0] = -1;
1014 fd_intern (evfd); 1277 fd_intern (evfd); /* doing it twice doesn't hurt */
1015 ev_io_set (&pipeev, evfd, EV_READ); 1278 ev_io_set (&pipe_w, evfd, EV_READ);
1016 } 1279 }
1017 else 1280 else
1018#endif 1281# endif
1019 { 1282 {
1020 while (pipe (evpipe)) 1283 while (pipe (evpipe))
1021 syserr ("(libev) error creating signal/async pipe"); 1284 ev_syserr ("(libev) error creating signal/async pipe");
1022 1285
1023 fd_intern (evpipe [0]); 1286 fd_intern (evpipe [0]);
1024 fd_intern (evpipe [1]); 1287 fd_intern (evpipe [1]);
1025 ev_io_set (&pipeev, evpipe [0], EV_READ); 1288 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1026 } 1289 }
1027 1290
1028 ev_io_start (EV_A_ &pipeev); 1291 ev_io_start (EV_A_ &pipe_w);
1029 ev_unref (EV_A); /* watcher should not keep loop alive */ 1292 ev_unref (EV_A); /* watcher should not keep loop alive */
1030 } 1293 }
1031} 1294}
1032 1295
1033void inline_size 1296inline_size void
1034evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1297evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1035{ 1298{
1036 if (!*flag) 1299 if (!*flag)
1037 { 1300 {
1038 int old_errno = errno; /* save errno because write might clobber it */ 1301 int old_errno = errno; /* save errno because write might clobber it */
1302 char dummy;
1039 1303
1040 *flag = 1; 1304 *flag = 1;
1041 1305
1042#if EV_USE_EVENTFD 1306#if EV_USE_EVENTFD
1043 if (evfd >= 0) 1307 if (evfd >= 0)
… …
1045 uint64_t counter = 1; 1309 uint64_t counter = 1;
1046 write (evfd, &counter, sizeof (uint64_t)); 1310 write (evfd, &counter, sizeof (uint64_t));
1047 } 1311 }
1048 else 1312 else
1049#endif 1313#endif
1314 /* win32 people keep sending patches that change this write() to send() */
1315 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1316 /* so when you think this write should be a send instead, please find out */
1317 /* where your send() is from - it's definitely not the microsoft send, and */
1318 /* tell me. thank you. */
1050 write (evpipe [1], &old_errno, 1); 1319 write (evpipe [1], &dummy, 1);
1051 1320
1052 errno = old_errno; 1321 errno = old_errno;
1053 } 1322 }
1054} 1323}
1055 1324
1325/* called whenever the libev signal pipe */
1326/* got some events (signal, async) */
1056static void 1327static void
1057pipecb (EV_P_ ev_io *iow, int revents) 1328pipecb (EV_P_ ev_io *iow, int revents)
1058{ 1329{
1330 int i;
1331
1059#if EV_USE_EVENTFD 1332#if EV_USE_EVENTFD
1060 if (evfd >= 0) 1333 if (evfd >= 0)
1061 { 1334 {
1062 uint64_t counter; 1335 uint64_t counter;
1063 read (evfd, &counter, sizeof (uint64_t)); 1336 read (evfd, &counter, sizeof (uint64_t));
1064 } 1337 }
1065 else 1338 else
1066#endif 1339#endif
1067 { 1340 {
1068 char dummy; 1341 char dummy;
1342 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1069 read (evpipe [0], &dummy, 1); 1343 read (evpipe [0], &dummy, 1);
1070 } 1344 }
1071 1345
1072 if (gotsig && ev_is_default_loop (EV_A)) 1346 if (sig_pending)
1073 { 1347 {
1074 int signum; 1348 sig_pending = 0;
1075 gotsig = 0;
1076 1349
1077 for (signum = signalmax; signum--; ) 1350 for (i = EV_NSIG - 1; i--; )
1078 if (signals [signum].gotsig) 1351 if (expect_false (signals [i].pending))
1079 ev_feed_signal_event (EV_A_ signum + 1); 1352 ev_feed_signal_event (EV_A_ i + 1);
1080 } 1353 }
1081 1354
1082#if EV_ASYNC_ENABLE 1355#if EV_ASYNC_ENABLE
1083 if (gotasync) 1356 if (async_pending)
1084 { 1357 {
1085 int i; 1358 async_pending = 0;
1086 gotasync = 0;
1087 1359
1088 for (i = asynccnt; i--; ) 1360 for (i = asynccnt; i--; )
1089 if (asyncs [i]->sent) 1361 if (asyncs [i]->sent)
1090 { 1362 {
1091 asyncs [i]->sent = 0; 1363 asyncs [i]->sent = 0;
… …
1099 1371
1100static void 1372static void
1101ev_sighandler (int signum) 1373ev_sighandler (int signum)
1102{ 1374{
1103#if EV_MULTIPLICITY 1375#if EV_MULTIPLICITY
1104 struct ev_loop *loop = &default_loop_struct; 1376 EV_P = signals [signum - 1].loop;
1105#endif 1377#endif
1106 1378
1107#if _WIN32 1379#ifdef _WIN32
1108 signal (signum, ev_sighandler); 1380 signal (signum, ev_sighandler);
1109#endif 1381#endif
1110 1382
1111 signals [signum - 1].gotsig = 1; 1383 signals [signum - 1].pending = 1;
1112 evpipe_write (EV_A_ &gotsig); 1384 evpipe_write (EV_A_ &sig_pending);
1113} 1385}
1114 1386
1115void noinline 1387void noinline
1116ev_feed_signal_event (EV_P_ int signum) 1388ev_feed_signal_event (EV_P_ int signum)
1117{ 1389{
1118 WL w; 1390 WL w;
1119 1391
1392 if (expect_false (signum <= 0 || signum > EV_NSIG))
1393 return;
1394
1395 --signum;
1396
1120#if EV_MULTIPLICITY 1397#if EV_MULTIPLICITY
1121 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1398 /* it is permissible to try to feed a signal to the wrong loop */
1122#endif 1399 /* or, likely more useful, feeding a signal nobody is waiting for */
1123 1400
1124 --signum; 1401 if (expect_false (signals [signum].loop != EV_A))
1125
1126 if (signum < 0 || signum >= signalmax)
1127 return; 1402 return;
1403#endif
1128 1404
1129 signals [signum].gotsig = 0; 1405 signals [signum].pending = 0;
1130 1406
1131 for (w = signals [signum].head; w; w = w->next) 1407 for (w = signals [signum].head; w; w = w->next)
1132 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1408 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1133} 1409}
1134 1410
1411#if EV_USE_SIGNALFD
1412static void
1413sigfdcb (EV_P_ ev_io *iow, int revents)
1414{
1415 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1416
1417 for (;;)
1418 {
1419 ssize_t res = read (sigfd, si, sizeof (si));
1420
1421 /* not ISO-C, as res might be -1, but works with SuS */
1422 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1423 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1424
1425 if (res < (ssize_t)sizeof (si))
1426 break;
1427 }
1428}
1429#endif
1430
1431#endif
1432
1135/*****************************************************************************/ 1433/*****************************************************************************/
1136 1434
1435#if EV_CHILD_ENABLE
1137static WL childs [EV_PID_HASHSIZE]; 1436static WL childs [EV_PID_HASHSIZE];
1138
1139#ifndef _WIN32
1140 1437
1141static ev_signal childev; 1438static ev_signal childev;
1142 1439
1143#ifndef WIFCONTINUED 1440#ifndef WIFCONTINUED
1144# define WIFCONTINUED(status) 0 1441# define WIFCONTINUED(status) 0
1145#endif 1442#endif
1146 1443
1147void inline_speed 1444/* handle a single child status event */
1445inline_speed void
1148child_reap (EV_P_ int chain, int pid, int status) 1446child_reap (EV_P_ int chain, int pid, int status)
1149{ 1447{
1150 ev_child *w; 1448 ev_child *w;
1151 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1449 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1152 1450
1153 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1451 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1154 { 1452 {
1155 if ((w->pid == pid || !w->pid) 1453 if ((w->pid == pid || !w->pid)
1156 && (!traced || (w->flags & 1))) 1454 && (!traced || (w->flags & 1)))
1157 { 1455 {
1158 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1456 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1165 1463
1166#ifndef WCONTINUED 1464#ifndef WCONTINUED
1167# define WCONTINUED 0 1465# define WCONTINUED 0
1168#endif 1466#endif
1169 1467
1468/* called on sigchld etc., calls waitpid */
1170static void 1469static void
1171childcb (EV_P_ ev_signal *sw, int revents) 1470childcb (EV_P_ ev_signal *sw, int revents)
1172{ 1471{
1173 int pid, status; 1472 int pid, status;
1174 1473
… …
1182 /* make sure we are called again until all children have been reaped */ 1481 /* make sure we are called again until all children have been reaped */
1183 /* we need to do it this way so that the callback gets called before we continue */ 1482 /* we need to do it this way so that the callback gets called before we continue */
1184 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1483 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1185 1484
1186 child_reap (EV_A_ pid, pid, status); 1485 child_reap (EV_A_ pid, pid, status);
1187 if (EV_PID_HASHSIZE > 1) 1486 if ((EV_PID_HASHSIZE) > 1)
1188 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1487 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1189} 1488}
1190 1489
1191#endif 1490#endif
1192 1491
… …
1255 /* kqueue is borked on everything but netbsd apparently */ 1554 /* kqueue is borked on everything but netbsd apparently */
1256 /* it usually doesn't work correctly on anything but sockets and pipes */ 1555 /* it usually doesn't work correctly on anything but sockets and pipes */
1257 flags &= ~EVBACKEND_KQUEUE; 1556 flags &= ~EVBACKEND_KQUEUE;
1258#endif 1557#endif
1259#ifdef __APPLE__ 1558#ifdef __APPLE__
1260 // flags &= ~EVBACKEND_KQUEUE; for documentation 1559 /* only select works correctly on that "unix-certified" platform */
1261 flags &= ~EVBACKEND_POLL; 1560 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1561 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1562#endif
1563#ifdef __FreeBSD__
1564 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1262#endif 1565#endif
1263 1566
1264 return flags; 1567 return flags;
1265} 1568}
1266 1569
… …
1268ev_embeddable_backends (void) 1571ev_embeddable_backends (void)
1269{ 1572{
1270 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1573 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1271 1574
1272 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1575 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1273 /* please fix it and tell me how to detect the fix */ 1576 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1274 flags &= ~EVBACKEND_EPOLL; 1577 flags &= ~EVBACKEND_EPOLL;
1275 1578
1276 return flags; 1579 return flags;
1277} 1580}
1278 1581
1279unsigned int 1582unsigned int
1280ev_backend (EV_P) 1583ev_backend (EV_P)
1281{ 1584{
1282 return backend; 1585 return backend;
1283} 1586}
1284 1587
1588#if EV_FEATURE_API
1285unsigned int 1589unsigned int
1286ev_loop_count (EV_P) 1590ev_iteration (EV_P)
1287{ 1591{
1288 return loop_count; 1592 return loop_count;
1289} 1593}
1290 1594
1595unsigned int
1596ev_depth (EV_P)
1597{
1598 return loop_depth;
1599}
1600
1291void 1601void
1292ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1602ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1293{ 1603{
1294 io_blocktime = interval; 1604 io_blocktime = interval;
1295} 1605}
… …
1298ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1608ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1299{ 1609{
1300 timeout_blocktime = interval; 1610 timeout_blocktime = interval;
1301} 1611}
1302 1612
1613void
1614ev_set_userdata (EV_P_ void *data)
1615{
1616 userdata = data;
1617}
1618
1619void *
1620ev_userdata (EV_P)
1621{
1622 return userdata;
1623}
1624
1625void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1626{
1627 invoke_cb = invoke_pending_cb;
1628}
1629
1630void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1631{
1632 release_cb = release;
1633 acquire_cb = acquire;
1634}
1635#endif
1636
1637/* initialise a loop structure, must be zero-initialised */
1303static void noinline 1638static void noinline
1304loop_init (EV_P_ unsigned int flags) 1639loop_init (EV_P_ unsigned int flags)
1305{ 1640{
1306 if (!backend) 1641 if (!backend)
1307 { 1642 {
1643#if EV_USE_REALTIME
1644 if (!have_realtime)
1645 {
1646 struct timespec ts;
1647
1648 if (!clock_gettime (CLOCK_REALTIME, &ts))
1649 have_realtime = 1;
1650 }
1651#endif
1652
1308#if EV_USE_MONOTONIC 1653#if EV_USE_MONOTONIC
1654 if (!have_monotonic)
1309 { 1655 {
1310 struct timespec ts; 1656 struct timespec ts;
1657
1311 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1658 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1312 have_monotonic = 1; 1659 have_monotonic = 1;
1313 } 1660 }
1314#endif 1661#endif
1662
1663 /* pid check not overridable via env */
1664#ifndef _WIN32
1665 if (flags & EVFLAG_FORKCHECK)
1666 curpid = getpid ();
1667#endif
1668
1669 if (!(flags & EVFLAG_NOENV)
1670 && !enable_secure ()
1671 && getenv ("LIBEV_FLAGS"))
1672 flags = atoi (getenv ("LIBEV_FLAGS"));
1315 1673
1316 ev_rt_now = ev_time (); 1674 ev_rt_now = ev_time ();
1317 mn_now = get_clock (); 1675 mn_now = get_clock ();
1318 now_floor = mn_now; 1676 now_floor = mn_now;
1319 rtmn_diff = ev_rt_now - mn_now; 1677 rtmn_diff = ev_rt_now - mn_now;
1678#if EV_FEATURE_API
1679 invoke_cb = ev_invoke_pending;
1680#endif
1320 1681
1321 io_blocktime = 0.; 1682 io_blocktime = 0.;
1322 timeout_blocktime = 0.; 1683 timeout_blocktime = 0.;
1323 backend = 0; 1684 backend = 0;
1324 backend_fd = -1; 1685 backend_fd = -1;
1325 gotasync = 0; 1686 sig_pending = 0;
1687#if EV_ASYNC_ENABLE
1688 async_pending = 0;
1689#endif
1326#if EV_USE_INOTIFY 1690#if EV_USE_INOTIFY
1327 fs_fd = -2; 1691 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1328#endif 1692#endif
1329 1693#if EV_USE_SIGNALFD
1330 /* pid check not overridable via env */ 1694 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1331#ifndef _WIN32
1332 if (flags & EVFLAG_FORKCHECK)
1333 curpid = getpid ();
1334#endif 1695#endif
1335
1336 if (!(flags & EVFLAG_NOENV)
1337 && !enable_secure ()
1338 && getenv ("LIBEV_FLAGS"))
1339 flags = atoi (getenv ("LIBEV_FLAGS"));
1340 1696
1341 if (!(flags & 0x0000ffffU)) 1697 if (!(flags & 0x0000ffffU))
1342 flags |= ev_recommended_backends (); 1698 flags |= ev_recommended_backends ();
1343 1699
1344#if EV_USE_PORT 1700#if EV_USE_PORT
… …
1355#endif 1711#endif
1356#if EV_USE_SELECT 1712#if EV_USE_SELECT
1357 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1713 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1358#endif 1714#endif
1359 1715
1716 ev_prepare_init (&pending_w, pendingcb);
1717
1718#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1360 ev_init (&pipeev, pipecb); 1719 ev_init (&pipe_w, pipecb);
1361 ev_set_priority (&pipeev, EV_MAXPRI); 1720 ev_set_priority (&pipe_w, EV_MAXPRI);
1721#endif
1362 } 1722 }
1363} 1723}
1364 1724
1725/* free up a loop structure */
1365static void noinline 1726static void noinline
1366loop_destroy (EV_P) 1727loop_destroy (EV_P)
1367{ 1728{
1368 int i; 1729 int i;
1369 1730
1370 if (ev_is_active (&pipeev)) 1731 if (ev_is_active (&pipe_w))
1371 { 1732 {
1372 ev_ref (EV_A); /* signal watcher */ 1733 /*ev_ref (EV_A);*/
1373 ev_io_stop (EV_A_ &pipeev); 1734 /*ev_io_stop (EV_A_ &pipe_w);*/
1374 1735
1375#if EV_USE_EVENTFD 1736#if EV_USE_EVENTFD
1376 if (evfd >= 0) 1737 if (evfd >= 0)
1377 close (evfd); 1738 close (evfd);
1378#endif 1739#endif
1379 1740
1380 if (evpipe [0] >= 0) 1741 if (evpipe [0] >= 0)
1381 { 1742 {
1382 close (evpipe [0]); 1743 EV_WIN32_CLOSE_FD (evpipe [0]);
1383 close (evpipe [1]); 1744 EV_WIN32_CLOSE_FD (evpipe [1]);
1384 } 1745 }
1385 } 1746 }
1747
1748#if EV_USE_SIGNALFD
1749 if (ev_is_active (&sigfd_w))
1750 close (sigfd);
1751#endif
1386 1752
1387#if EV_USE_INOTIFY 1753#if EV_USE_INOTIFY
1388 if (fs_fd >= 0) 1754 if (fs_fd >= 0)
1389 close (fs_fd); 1755 close (fs_fd);
1390#endif 1756#endif
… …
1414#if EV_IDLE_ENABLE 1780#if EV_IDLE_ENABLE
1415 array_free (idle, [i]); 1781 array_free (idle, [i]);
1416#endif 1782#endif
1417 } 1783 }
1418 1784
1419 ev_free (anfds); anfdmax = 0; 1785 ev_free (anfds); anfds = 0; anfdmax = 0;
1420 1786
1421 /* have to use the microsoft-never-gets-it-right macro */ 1787 /* have to use the microsoft-never-gets-it-right macro */
1788 array_free (rfeed, EMPTY);
1422 array_free (fdchange, EMPTY); 1789 array_free (fdchange, EMPTY);
1423 array_free (timer, EMPTY); 1790 array_free (timer, EMPTY);
1424#if EV_PERIODIC_ENABLE 1791#if EV_PERIODIC_ENABLE
1425 array_free (periodic, EMPTY); 1792 array_free (periodic, EMPTY);
1426#endif 1793#endif
… …
1435 1802
1436 backend = 0; 1803 backend = 0;
1437} 1804}
1438 1805
1439#if EV_USE_INOTIFY 1806#if EV_USE_INOTIFY
1440void inline_size infy_fork (EV_P); 1807inline_size void infy_fork (EV_P);
1441#endif 1808#endif
1442 1809
1443void inline_size 1810inline_size void
1444loop_fork (EV_P) 1811loop_fork (EV_P)
1445{ 1812{
1446#if EV_USE_PORT 1813#if EV_USE_PORT
1447 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1814 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1448#endif 1815#endif
… …
1454#endif 1821#endif
1455#if EV_USE_INOTIFY 1822#if EV_USE_INOTIFY
1456 infy_fork (EV_A); 1823 infy_fork (EV_A);
1457#endif 1824#endif
1458 1825
1459 if (ev_is_active (&pipeev)) 1826 if (ev_is_active (&pipe_w))
1460 { 1827 {
1461 /* this "locks" the handlers against writing to the pipe */ 1828 /* this "locks" the handlers against writing to the pipe */
1462 /* while we modify the fd vars */ 1829 /* while we modify the fd vars */
1463 gotsig = 1; 1830 sig_pending = 1;
1464#if EV_ASYNC_ENABLE 1831#if EV_ASYNC_ENABLE
1465 gotasync = 1; 1832 async_pending = 1;
1466#endif 1833#endif
1467 1834
1468 ev_ref (EV_A); 1835 ev_ref (EV_A);
1469 ev_io_stop (EV_A_ &pipeev); 1836 ev_io_stop (EV_A_ &pipe_w);
1470 1837
1471#if EV_USE_EVENTFD 1838#if EV_USE_EVENTFD
1472 if (evfd >= 0) 1839 if (evfd >= 0)
1473 close (evfd); 1840 close (evfd);
1474#endif 1841#endif
1475 1842
1476 if (evpipe [0] >= 0) 1843 if (evpipe [0] >= 0)
1477 { 1844 {
1478 close (evpipe [0]); 1845 EV_WIN32_CLOSE_FD (evpipe [0]);
1479 close (evpipe [1]); 1846 EV_WIN32_CLOSE_FD (evpipe [1]);
1480 } 1847 }
1481 1848
1849#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1482 evpipe_init (EV_A); 1850 evpipe_init (EV_A);
1483 /* now iterate over everything, in case we missed something */ 1851 /* now iterate over everything, in case we missed something */
1484 pipecb (EV_A_ &pipeev, EV_READ); 1852 pipecb (EV_A_ &pipe_w, EV_READ);
1853#endif
1485 } 1854 }
1486 1855
1487 postfork = 0; 1856 postfork = 0;
1488} 1857}
1489 1858
1490#if EV_MULTIPLICITY 1859#if EV_MULTIPLICITY
1491 1860
1492struct ev_loop * 1861struct ev_loop *
1493ev_loop_new (unsigned int flags) 1862ev_loop_new (unsigned int flags)
1494{ 1863{
1495 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1864 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1496 1865
1497 memset (loop, 0, sizeof (struct ev_loop)); 1866 memset (EV_A, 0, sizeof (struct ev_loop));
1498
1499 loop_init (EV_A_ flags); 1867 loop_init (EV_A_ flags);
1500 1868
1501 if (ev_backend (EV_A)) 1869 if (ev_backend (EV_A))
1502 return loop; 1870 return EV_A;
1503 1871
1504 return 0; 1872 return 0;
1505} 1873}
1506 1874
1507void 1875void
… …
1514void 1882void
1515ev_loop_fork (EV_P) 1883ev_loop_fork (EV_P)
1516{ 1884{
1517 postfork = 1; /* must be in line with ev_default_fork */ 1885 postfork = 1; /* must be in line with ev_default_fork */
1518} 1886}
1887#endif /* multiplicity */
1519 1888
1520#if EV_VERIFY 1889#if EV_VERIFY
1521static void noinline 1890static void noinline
1522verify_watcher (EV_P_ W w) 1891verify_watcher (EV_P_ W w)
1523{ 1892{
1524 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1893 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1525 1894
1526 if (w->pending) 1895 if (w->pending)
1527 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1896 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1528} 1897}
1529 1898
1530static void noinline 1899static void noinline
1531verify_heap (EV_P_ ANHE *heap, int N) 1900verify_heap (EV_P_ ANHE *heap, int N)
1532{ 1901{
1533 int i; 1902 int i;
1534 1903
1535 for (i = HEAP0; i < N + HEAP0; ++i) 1904 for (i = HEAP0; i < N + HEAP0; ++i)
1536 { 1905 {
1537 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1906 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1538 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1907 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1539 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1908 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1540 1909
1541 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1910 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1542 } 1911 }
1543} 1912}
1544 1913
1545static void noinline 1914static void noinline
1546array_verify (EV_P_ W *ws, int cnt) 1915array_verify (EV_P_ W *ws, int cnt)
1547{ 1916{
1548 while (cnt--) 1917 while (cnt--)
1549 { 1918 {
1550 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1919 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1551 verify_watcher (EV_A_ ws [cnt]); 1920 verify_watcher (EV_A_ ws [cnt]);
1552 } 1921 }
1553} 1922}
1554#endif 1923#endif
1555 1924
1925#if EV_FEATURE_API
1556void 1926void
1557ev_loop_verify (EV_P) 1927ev_verify (EV_P)
1558{ 1928{
1559#if EV_VERIFY 1929#if EV_VERIFY
1560 int i; 1930 int i;
1561 WL w; 1931 WL w;
1562 1932
1563 assert (activecnt >= -1); 1933 assert (activecnt >= -1);
1564 1934
1565 assert (fdchangemax >= fdchangecnt); 1935 assert (fdchangemax >= fdchangecnt);
1566 for (i = 0; i < fdchangecnt; ++i) 1936 for (i = 0; i < fdchangecnt; ++i)
1567 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1937 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1568 1938
1569 assert (anfdmax >= 0); 1939 assert (anfdmax >= 0);
1570 for (i = 0; i < anfdmax; ++i) 1940 for (i = 0; i < anfdmax; ++i)
1571 for (w = anfds [i].head; w; w = w->next) 1941 for (w = anfds [i].head; w; w = w->next)
1572 { 1942 {
1573 verify_watcher (EV_A_ (W)w); 1943 verify_watcher (EV_A_ (W)w);
1574 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1944 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1575 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1945 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1576 } 1946 }
1577 1947
1578 assert (timermax >= timercnt); 1948 assert (timermax >= timercnt);
1579 verify_heap (EV_A_ timers, timercnt); 1949 verify_heap (EV_A_ timers, timercnt);
1580 1950
… …
1601#if EV_ASYNC_ENABLE 1971#if EV_ASYNC_ENABLE
1602 assert (asyncmax >= asynccnt); 1972 assert (asyncmax >= asynccnt);
1603 array_verify (EV_A_ (W *)asyncs, asynccnt); 1973 array_verify (EV_A_ (W *)asyncs, asynccnt);
1604#endif 1974#endif
1605 1975
1976#if EV_PREPARE_ENABLE
1606 assert (preparemax >= preparecnt); 1977 assert (preparemax >= preparecnt);
1607 array_verify (EV_A_ (W *)prepares, preparecnt); 1978 array_verify (EV_A_ (W *)prepares, preparecnt);
1979#endif
1608 1980
1981#if EV_CHECK_ENABLE
1609 assert (checkmax >= checkcnt); 1982 assert (checkmax >= checkcnt);
1610 array_verify (EV_A_ (W *)checks, checkcnt); 1983 array_verify (EV_A_ (W *)checks, checkcnt);
1984#endif
1611 1985
1612# if 0 1986# if 0
1987#if EV_CHILD_ENABLE
1613 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1988 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1614 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1989 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1990#endif
1615# endif 1991# endif
1616#endif 1992#endif
1617} 1993}
1618 1994#endif
1619#endif /* multiplicity */
1620 1995
1621#if EV_MULTIPLICITY 1996#if EV_MULTIPLICITY
1622struct ev_loop * 1997struct ev_loop *
1623ev_default_loop_init (unsigned int flags) 1998ev_default_loop_init (unsigned int flags)
1624#else 1999#else
… …
1627#endif 2002#endif
1628{ 2003{
1629 if (!ev_default_loop_ptr) 2004 if (!ev_default_loop_ptr)
1630 { 2005 {
1631#if EV_MULTIPLICITY 2006#if EV_MULTIPLICITY
1632 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2007 EV_P = ev_default_loop_ptr = &default_loop_struct;
1633#else 2008#else
1634 ev_default_loop_ptr = 1; 2009 ev_default_loop_ptr = 1;
1635#endif 2010#endif
1636 2011
1637 loop_init (EV_A_ flags); 2012 loop_init (EV_A_ flags);
1638 2013
1639 if (ev_backend (EV_A)) 2014 if (ev_backend (EV_A))
1640 { 2015 {
1641#ifndef _WIN32 2016#if EV_CHILD_ENABLE
1642 ev_signal_init (&childev, childcb, SIGCHLD); 2017 ev_signal_init (&childev, childcb, SIGCHLD);
1643 ev_set_priority (&childev, EV_MAXPRI); 2018 ev_set_priority (&childev, EV_MAXPRI);
1644 ev_signal_start (EV_A_ &childev); 2019 ev_signal_start (EV_A_ &childev);
1645 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2020 ev_unref (EV_A); /* child watcher should not keep loop alive */
1646#endif 2021#endif
… …
1654 2029
1655void 2030void
1656ev_default_destroy (void) 2031ev_default_destroy (void)
1657{ 2032{
1658#if EV_MULTIPLICITY 2033#if EV_MULTIPLICITY
1659 struct ev_loop *loop = ev_default_loop_ptr; 2034 EV_P = ev_default_loop_ptr;
1660#endif 2035#endif
1661 2036
1662#ifndef _WIN32 2037 ev_default_loop_ptr = 0;
2038
2039#if EV_CHILD_ENABLE
1663 ev_ref (EV_A); /* child watcher */ 2040 ev_ref (EV_A); /* child watcher */
1664 ev_signal_stop (EV_A_ &childev); 2041 ev_signal_stop (EV_A_ &childev);
1665#endif 2042#endif
1666 2043
1667 loop_destroy (EV_A); 2044 loop_destroy (EV_A);
… …
1669 2046
1670void 2047void
1671ev_default_fork (void) 2048ev_default_fork (void)
1672{ 2049{
1673#if EV_MULTIPLICITY 2050#if EV_MULTIPLICITY
1674 struct ev_loop *loop = ev_default_loop_ptr; 2051 EV_P = ev_default_loop_ptr;
1675#endif 2052#endif
1676 2053
1677 if (backend)
1678 postfork = 1; /* must be in line with ev_loop_fork */ 2054 postfork = 1; /* must be in line with ev_loop_fork */
1679} 2055}
1680 2056
1681/*****************************************************************************/ 2057/*****************************************************************************/
1682 2058
1683void 2059void
1684ev_invoke (EV_P_ void *w, int revents) 2060ev_invoke (EV_P_ void *w, int revents)
1685{ 2061{
1686 EV_CB_INVOKE ((W)w, revents); 2062 EV_CB_INVOKE ((W)w, revents);
1687} 2063}
1688 2064
1689void inline_speed 2065unsigned int
1690call_pending (EV_P) 2066ev_pending_count (EV_P)
2067{
2068 int pri;
2069 unsigned int count = 0;
2070
2071 for (pri = NUMPRI; pri--; )
2072 count += pendingcnt [pri];
2073
2074 return count;
2075}
2076
2077void noinline
2078ev_invoke_pending (EV_P)
1691{ 2079{
1692 int pri; 2080 int pri;
1693 2081
1694 for (pri = NUMPRI; pri--; ) 2082 for (pri = NUMPRI; pri--; )
1695 while (pendingcnt [pri]) 2083 while (pendingcnt [pri])
1696 { 2084 {
1697 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2085 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1698 2086
1699 if (expect_true (p->w))
1700 {
1701 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2087 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2088 /* ^ this is no longer true, as pending_w could be here */
1702 2089
1703 p->w->pending = 0; 2090 p->w->pending = 0;
1704 EV_CB_INVOKE (p->w, p->events); 2091 EV_CB_INVOKE (p->w, p->events);
1705 EV_FREQUENT_CHECK; 2092 EV_FREQUENT_CHECK;
1706 }
1707 } 2093 }
1708} 2094}
1709 2095
1710#if EV_IDLE_ENABLE 2096#if EV_IDLE_ENABLE
1711void inline_size 2097/* make idle watchers pending. this handles the "call-idle */
2098/* only when higher priorities are idle" logic */
2099inline_size void
1712idle_reify (EV_P) 2100idle_reify (EV_P)
1713{ 2101{
1714 if (expect_false (idleall)) 2102 if (expect_false (idleall))
1715 { 2103 {
1716 int pri; 2104 int pri;
… …
1728 } 2116 }
1729 } 2117 }
1730} 2118}
1731#endif 2119#endif
1732 2120
1733void inline_size 2121/* make timers pending */
2122inline_size void
1734timers_reify (EV_P) 2123timers_reify (EV_P)
1735{ 2124{
1736 EV_FREQUENT_CHECK; 2125 EV_FREQUENT_CHECK;
1737 2126
1738 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2127 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1739 { 2128 {
1740 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2129 do
1741
1742 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1743
1744 /* first reschedule or stop timer */
1745 if (w->repeat)
1746 { 2130 {
2131 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2132
2133 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2134
2135 /* first reschedule or stop timer */
2136 if (w->repeat)
2137 {
1747 ev_at (w) += w->repeat; 2138 ev_at (w) += w->repeat;
1748 if (ev_at (w) < mn_now) 2139 if (ev_at (w) < mn_now)
1749 ev_at (w) = mn_now; 2140 ev_at (w) = mn_now;
1750 2141
1751 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2142 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1752 2143
1753 ANHE_at_cache (timers [HEAP0]); 2144 ANHE_at_cache (timers [HEAP0]);
1754 downheap (timers, timercnt, HEAP0); 2145 downheap (timers, timercnt, HEAP0);
2146 }
2147 else
2148 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2149
2150 EV_FREQUENT_CHECK;
2151 feed_reverse (EV_A_ (W)w);
1755 } 2152 }
1756 else 2153 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1757 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1758 2154
1759 EV_FREQUENT_CHECK; 2155 feed_reverse_done (EV_A_ EV_TIMER);
1760 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1761 } 2156 }
1762} 2157}
1763 2158
1764#if EV_PERIODIC_ENABLE 2159#if EV_PERIODIC_ENABLE
1765void inline_size 2160/* make periodics pending */
2161inline_size void
1766periodics_reify (EV_P) 2162periodics_reify (EV_P)
1767{ 2163{
1768 EV_FREQUENT_CHECK; 2164 EV_FREQUENT_CHECK;
1769 2165
1770 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2166 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1771 { 2167 {
1772 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2168 int feed_count = 0;
1773 2169
1774 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2170 do
1775
1776 /* first reschedule or stop timer */
1777 if (w->reschedule_cb)
1778 { 2171 {
2172 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2173
2174 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2175
2176 /* first reschedule or stop timer */
2177 if (w->reschedule_cb)
2178 {
1779 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2179 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1780 2180
1781 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2181 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1782 2182
1783 ANHE_at_cache (periodics [HEAP0]); 2183 ANHE_at_cache (periodics [HEAP0]);
1784 downheap (periodics, periodiccnt, HEAP0); 2184 downheap (periodics, periodiccnt, HEAP0);
2185 }
2186 else if (w->interval)
2187 {
2188 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2189 /* if next trigger time is not sufficiently in the future, put it there */
2190 /* this might happen because of floating point inexactness */
2191 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2192 {
2193 ev_at (w) += w->interval;
2194
2195 /* if interval is unreasonably low we might still have a time in the past */
2196 /* so correct this. this will make the periodic very inexact, but the user */
2197 /* has effectively asked to get triggered more often than possible */
2198 if (ev_at (w) < ev_rt_now)
2199 ev_at (w) = ev_rt_now;
2200 }
2201
2202 ANHE_at_cache (periodics [HEAP0]);
2203 downheap (periodics, periodiccnt, HEAP0);
2204 }
2205 else
2206 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2207
2208 EV_FREQUENT_CHECK;
2209 feed_reverse (EV_A_ (W)w);
1785 } 2210 }
1786 else if (w->interval) 2211 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1787 {
1788 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1789 /* if next trigger time is not sufficiently in the future, put it there */
1790 /* this might happen because of floating point inexactness */
1791 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1792 {
1793 ev_at (w) += w->interval;
1794 2212
1795 /* if interval is unreasonably low we might still have a time in the past */
1796 /* so correct this. this will make the periodic very inexact, but the user */
1797 /* has effectively asked to get triggered more often than possible */
1798 if (ev_at (w) < ev_rt_now)
1799 ev_at (w) = ev_rt_now;
1800 }
1801
1802 ANHE_at_cache (periodics [HEAP0]);
1803 downheap (periodics, periodiccnt, HEAP0);
1804 }
1805 else
1806 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1807
1808 EV_FREQUENT_CHECK;
1809 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2213 feed_reverse_done (EV_A_ EV_PERIODIC);
1810 } 2214 }
1811} 2215}
1812 2216
2217/* simply recalculate all periodics */
2218/* TODO: maybe ensure that at least one event happens when jumping forward? */
1813static void noinline 2219static void noinline
1814periodics_reschedule (EV_P) 2220periodics_reschedule (EV_P)
1815{ 2221{
1816 int i; 2222 int i;
1817 2223
… …
1830 2236
1831 reheap (periodics, periodiccnt); 2237 reheap (periodics, periodiccnt);
1832} 2238}
1833#endif 2239#endif
1834 2240
1835void inline_speed 2241/* adjust all timers by a given offset */
2242static void noinline
2243timers_reschedule (EV_P_ ev_tstamp adjust)
2244{
2245 int i;
2246
2247 for (i = 0; i < timercnt; ++i)
2248 {
2249 ANHE *he = timers + i + HEAP0;
2250 ANHE_w (*he)->at += adjust;
2251 ANHE_at_cache (*he);
2252 }
2253}
2254
2255/* fetch new monotonic and realtime times from the kernel */
2256/* also detect if there was a timejump, and act accordingly */
2257inline_speed void
1836time_update (EV_P_ ev_tstamp max_block) 2258time_update (EV_P_ ev_tstamp max_block)
1837{ 2259{
1838 int i;
1839
1840#if EV_USE_MONOTONIC 2260#if EV_USE_MONOTONIC
1841 if (expect_true (have_monotonic)) 2261 if (expect_true (have_monotonic))
1842 { 2262 {
2263 int i;
1843 ev_tstamp odiff = rtmn_diff; 2264 ev_tstamp odiff = rtmn_diff;
1844 2265
1845 mn_now = get_clock (); 2266 mn_now = get_clock ();
1846 2267
1847 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2268 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1873 ev_rt_now = ev_time (); 2294 ev_rt_now = ev_time ();
1874 mn_now = get_clock (); 2295 mn_now = get_clock ();
1875 now_floor = mn_now; 2296 now_floor = mn_now;
1876 } 2297 }
1877 2298
2299 /* no timer adjustment, as the monotonic clock doesn't jump */
2300 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878# if EV_PERIODIC_ENABLE 2301# if EV_PERIODIC_ENABLE
1879 periodics_reschedule (EV_A); 2302 periodics_reschedule (EV_A);
1880# endif 2303# endif
1881 /* no timer adjustment, as the monotonic clock doesn't jump */
1882 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1883 } 2304 }
1884 else 2305 else
1885#endif 2306#endif
1886 { 2307 {
1887 ev_rt_now = ev_time (); 2308 ev_rt_now = ev_time ();
1888 2309
1889 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2310 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1890 { 2311 {
2312 /* adjust timers. this is easy, as the offset is the same for all of them */
2313 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1891#if EV_PERIODIC_ENABLE 2314#if EV_PERIODIC_ENABLE
1892 periodics_reschedule (EV_A); 2315 periodics_reschedule (EV_A);
1893#endif 2316#endif
1894 /* adjust timers. this is easy, as the offset is the same for all of them */
1895 for (i = 0; i < timercnt; ++i)
1896 {
1897 ANHE *he = timers + i + HEAP0;
1898 ANHE_w (*he)->at += ev_rt_now - mn_now;
1899 ANHE_at_cache (*he);
1900 }
1901 } 2317 }
1902 2318
1903 mn_now = ev_rt_now; 2319 mn_now = ev_rt_now;
1904 } 2320 }
1905} 2321}
1906 2322
1907void 2323void
1908ev_ref (EV_P)
1909{
1910 ++activecnt;
1911}
1912
1913void
1914ev_unref (EV_P)
1915{
1916 --activecnt;
1917}
1918
1919void
1920ev_now_update (EV_P)
1921{
1922 time_update (EV_A_ 1e100);
1923}
1924
1925static int loop_done;
1926
1927void
1928ev_loop (EV_P_ int flags) 2324ev_run (EV_P_ int flags)
1929{ 2325{
2326#if EV_FEATURE_API
2327 ++loop_depth;
2328#endif
2329
2330 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2331
1930 loop_done = EVUNLOOP_CANCEL; 2332 loop_done = EVBREAK_CANCEL;
1931 2333
1932 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2334 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1933 2335
1934 do 2336 do
1935 { 2337 {
1936#if EV_VERIFY >= 2 2338#if EV_VERIFY >= 2
1937 ev_loop_verify (EV_A); 2339 ev_verify (EV_A);
1938#endif 2340#endif
1939 2341
1940#ifndef _WIN32 2342#ifndef _WIN32
1941 if (expect_false (curpid)) /* penalise the forking check even more */ 2343 if (expect_false (curpid)) /* penalise the forking check even more */
1942 if (expect_false (getpid () != curpid)) 2344 if (expect_false (getpid () != curpid))
… …
1950 /* we might have forked, so queue fork handlers */ 2352 /* we might have forked, so queue fork handlers */
1951 if (expect_false (postfork)) 2353 if (expect_false (postfork))
1952 if (forkcnt) 2354 if (forkcnt)
1953 { 2355 {
1954 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2356 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1955 call_pending (EV_A); 2357 EV_INVOKE_PENDING;
1956 } 2358 }
1957#endif 2359#endif
1958 2360
2361#if EV_PREPARE_ENABLE
1959 /* queue prepare watchers (and execute them) */ 2362 /* queue prepare watchers (and execute them) */
1960 if (expect_false (preparecnt)) 2363 if (expect_false (preparecnt))
1961 { 2364 {
1962 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2365 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1963 call_pending (EV_A); 2366 EV_INVOKE_PENDING;
1964 } 2367 }
2368#endif
1965 2369
1966 if (expect_false (!activecnt)) 2370 if (expect_false (loop_done))
1967 break; 2371 break;
1968 2372
1969 /* we might have forked, so reify kernel state if necessary */ 2373 /* we might have forked, so reify kernel state if necessary */
1970 if (expect_false (postfork)) 2374 if (expect_false (postfork))
1971 loop_fork (EV_A); 2375 loop_fork (EV_A);
… …
1976 /* calculate blocking time */ 2380 /* calculate blocking time */
1977 { 2381 {
1978 ev_tstamp waittime = 0.; 2382 ev_tstamp waittime = 0.;
1979 ev_tstamp sleeptime = 0.; 2383 ev_tstamp sleeptime = 0.;
1980 2384
2385 /* remember old timestamp for io_blocktime calculation */
2386 ev_tstamp prev_mn_now = mn_now;
2387
2388 /* update time to cancel out callback processing overhead */
2389 time_update (EV_A_ 1e100);
2390
1981 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2391 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1982 { 2392 {
1983 /* update time to cancel out callback processing overhead */
1984 time_update (EV_A_ 1e100);
1985
1986 waittime = MAX_BLOCKTIME; 2393 waittime = MAX_BLOCKTIME;
1987 2394
1988 if (timercnt) 2395 if (timercnt)
1989 { 2396 {
1990 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2397 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1997 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2404 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1998 if (waittime > to) waittime = to; 2405 if (waittime > to) waittime = to;
1999 } 2406 }
2000#endif 2407#endif
2001 2408
2409 /* don't let timeouts decrease the waittime below timeout_blocktime */
2002 if (expect_false (waittime < timeout_blocktime)) 2410 if (expect_false (waittime < timeout_blocktime))
2003 waittime = timeout_blocktime; 2411 waittime = timeout_blocktime;
2004 2412
2005 sleeptime = waittime - backend_fudge; 2413 /* extra check because io_blocktime is commonly 0 */
2006
2007 if (expect_true (sleeptime > io_blocktime)) 2414 if (expect_false (io_blocktime))
2008 sleeptime = io_blocktime;
2009
2010 if (sleeptime)
2011 { 2415 {
2416 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2417
2418 if (sleeptime > waittime - backend_fudge)
2419 sleeptime = waittime - backend_fudge;
2420
2421 if (expect_true (sleeptime > 0.))
2422 {
2012 ev_sleep (sleeptime); 2423 ev_sleep (sleeptime);
2013 waittime -= sleeptime; 2424 waittime -= sleeptime;
2425 }
2014 } 2426 }
2015 } 2427 }
2016 2428
2429#if EV_FEATURE_API
2017 ++loop_count; 2430 ++loop_count;
2431#endif
2432 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2018 backend_poll (EV_A_ waittime); 2433 backend_poll (EV_A_ waittime);
2434 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2019 2435
2020 /* update ev_rt_now, do magic */ 2436 /* update ev_rt_now, do magic */
2021 time_update (EV_A_ waittime + sleeptime); 2437 time_update (EV_A_ waittime + sleeptime);
2022 } 2438 }
2023 2439
… …
2030#if EV_IDLE_ENABLE 2446#if EV_IDLE_ENABLE
2031 /* queue idle watchers unless other events are pending */ 2447 /* queue idle watchers unless other events are pending */
2032 idle_reify (EV_A); 2448 idle_reify (EV_A);
2033#endif 2449#endif
2034 2450
2451#if EV_CHECK_ENABLE
2035 /* queue check watchers, to be executed first */ 2452 /* queue check watchers, to be executed first */
2036 if (expect_false (checkcnt)) 2453 if (expect_false (checkcnt))
2037 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2454 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2455#endif
2038 2456
2039 call_pending (EV_A); 2457 EV_INVOKE_PENDING;
2040 } 2458 }
2041 while (expect_true ( 2459 while (expect_true (
2042 activecnt 2460 activecnt
2043 && !loop_done 2461 && !loop_done
2044 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2462 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2045 )); 2463 ));
2046 2464
2047 if (loop_done == EVUNLOOP_ONE) 2465 if (loop_done == EVBREAK_ONE)
2048 loop_done = EVUNLOOP_CANCEL; 2466 loop_done = EVBREAK_CANCEL;
2049}
2050 2467
2468#if EV_FEATURE_API
2469 --loop_depth;
2470#endif
2471}
2472
2051void 2473void
2052ev_unloop (EV_P_ int how) 2474ev_break (EV_P_ int how)
2053{ 2475{
2054 loop_done = how; 2476 loop_done = how;
2055} 2477}
2056 2478
2479void
2480ev_ref (EV_P)
2481{
2482 ++activecnt;
2483}
2484
2485void
2486ev_unref (EV_P)
2487{
2488 --activecnt;
2489}
2490
2491void
2492ev_now_update (EV_P)
2493{
2494 time_update (EV_A_ 1e100);
2495}
2496
2497void
2498ev_suspend (EV_P)
2499{
2500 ev_now_update (EV_A);
2501}
2502
2503void
2504ev_resume (EV_P)
2505{
2506 ev_tstamp mn_prev = mn_now;
2507
2508 ev_now_update (EV_A);
2509 timers_reschedule (EV_A_ mn_now - mn_prev);
2510#if EV_PERIODIC_ENABLE
2511 /* TODO: really do this? */
2512 periodics_reschedule (EV_A);
2513#endif
2514}
2515
2057/*****************************************************************************/ 2516/*****************************************************************************/
2517/* singly-linked list management, used when the expected list length is short */
2058 2518
2059void inline_size 2519inline_size void
2060wlist_add (WL *head, WL elem) 2520wlist_add (WL *head, WL elem)
2061{ 2521{
2062 elem->next = *head; 2522 elem->next = *head;
2063 *head = elem; 2523 *head = elem;
2064} 2524}
2065 2525
2066void inline_size 2526inline_size void
2067wlist_del (WL *head, WL elem) 2527wlist_del (WL *head, WL elem)
2068{ 2528{
2069 while (*head) 2529 while (*head)
2070 { 2530 {
2071 if (*head == elem) 2531 if (expect_true (*head == elem))
2072 { 2532 {
2073 *head = elem->next; 2533 *head = elem->next;
2074 return; 2534 break;
2075 } 2535 }
2076 2536
2077 head = &(*head)->next; 2537 head = &(*head)->next;
2078 } 2538 }
2079} 2539}
2080 2540
2081void inline_speed 2541/* internal, faster, version of ev_clear_pending */
2542inline_speed void
2082clear_pending (EV_P_ W w) 2543clear_pending (EV_P_ W w)
2083{ 2544{
2084 if (w->pending) 2545 if (w->pending)
2085 { 2546 {
2086 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2547 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2087 w->pending = 0; 2548 w->pending = 0;
2088 } 2549 }
2089} 2550}
2090 2551
2091int 2552int
… …
2095 int pending = w_->pending; 2556 int pending = w_->pending;
2096 2557
2097 if (expect_true (pending)) 2558 if (expect_true (pending))
2098 { 2559 {
2099 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2560 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2561 p->w = (W)&pending_w;
2100 w_->pending = 0; 2562 w_->pending = 0;
2101 p->w = 0;
2102 return p->events; 2563 return p->events;
2103 } 2564 }
2104 else 2565 else
2105 return 0; 2566 return 0;
2106} 2567}
2107 2568
2108void inline_size 2569inline_size void
2109pri_adjust (EV_P_ W w) 2570pri_adjust (EV_P_ W w)
2110{ 2571{
2111 int pri = w->priority; 2572 int pri = ev_priority (w);
2112 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2573 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2113 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2574 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2114 w->priority = pri; 2575 ev_set_priority (w, pri);
2115} 2576}
2116 2577
2117void inline_speed 2578inline_speed void
2118ev_start (EV_P_ W w, int active) 2579ev_start (EV_P_ W w, int active)
2119{ 2580{
2120 pri_adjust (EV_A_ w); 2581 pri_adjust (EV_A_ w);
2121 w->active = active; 2582 w->active = active;
2122 ev_ref (EV_A); 2583 ev_ref (EV_A);
2123} 2584}
2124 2585
2125void inline_size 2586inline_size void
2126ev_stop (EV_P_ W w) 2587ev_stop (EV_P_ W w)
2127{ 2588{
2128 ev_unref (EV_A); 2589 ev_unref (EV_A);
2129 w->active = 0; 2590 w->active = 0;
2130} 2591}
… …
2137 int fd = w->fd; 2598 int fd = w->fd;
2138 2599
2139 if (expect_false (ev_is_active (w))) 2600 if (expect_false (ev_is_active (w)))
2140 return; 2601 return;
2141 2602
2142 assert (("ev_io_start called with negative fd", fd >= 0)); 2603 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2604 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2143 2605
2144 EV_FREQUENT_CHECK; 2606 EV_FREQUENT_CHECK;
2145 2607
2146 ev_start (EV_A_ (W)w, 1); 2608 ev_start (EV_A_ (W)w, 1);
2147 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2609 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2148 wlist_add (&anfds[fd].head, (WL)w); 2610 wlist_add (&anfds[fd].head, (WL)w);
2149 2611
2150 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2612 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2151 w->events &= ~EV_IOFDSET; 2613 w->events &= ~EV__IOFDSET;
2152 2614
2153 EV_FREQUENT_CHECK; 2615 EV_FREQUENT_CHECK;
2154} 2616}
2155 2617
2156void noinline 2618void noinline
… …
2158{ 2620{
2159 clear_pending (EV_A_ (W)w); 2621 clear_pending (EV_A_ (W)w);
2160 if (expect_false (!ev_is_active (w))) 2622 if (expect_false (!ev_is_active (w)))
2161 return; 2623 return;
2162 2624
2163 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2625 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2164 2626
2165 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
2166 2628
2167 wlist_del (&anfds[w->fd].head, (WL)w); 2629 wlist_del (&anfds[w->fd].head, (WL)w);
2168 ev_stop (EV_A_ (W)w); 2630 ev_stop (EV_A_ (W)w);
2169 2631
2170 fd_change (EV_A_ w->fd, 1); 2632 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2171 2633
2172 EV_FREQUENT_CHECK; 2634 EV_FREQUENT_CHECK;
2173} 2635}
2174 2636
2175void noinline 2637void noinline
… …
2178 if (expect_false (ev_is_active (w))) 2640 if (expect_false (ev_is_active (w)))
2179 return; 2641 return;
2180 2642
2181 ev_at (w) += mn_now; 2643 ev_at (w) += mn_now;
2182 2644
2183 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2645 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2184 2646
2185 EV_FREQUENT_CHECK; 2647 EV_FREQUENT_CHECK;
2186 2648
2187 ++timercnt; 2649 ++timercnt;
2188 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2650 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2191 ANHE_at_cache (timers [ev_active (w)]); 2653 ANHE_at_cache (timers [ev_active (w)]);
2192 upheap (timers, ev_active (w)); 2654 upheap (timers, ev_active (w));
2193 2655
2194 EV_FREQUENT_CHECK; 2656 EV_FREQUENT_CHECK;
2195 2657
2196 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2658 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2197} 2659}
2198 2660
2199void noinline 2661void noinline
2200ev_timer_stop (EV_P_ ev_timer *w) 2662ev_timer_stop (EV_P_ ev_timer *w)
2201{ 2663{
… …
2206 EV_FREQUENT_CHECK; 2668 EV_FREQUENT_CHECK;
2207 2669
2208 { 2670 {
2209 int active = ev_active (w); 2671 int active = ev_active (w);
2210 2672
2211 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2673 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2212 2674
2213 --timercnt; 2675 --timercnt;
2214 2676
2215 if (expect_true (active < timercnt + HEAP0)) 2677 if (expect_true (active < timercnt + HEAP0))
2216 { 2678 {
2217 timers [active] = timers [timercnt + HEAP0]; 2679 timers [active] = timers [timercnt + HEAP0];
2218 adjustheap (timers, timercnt, active); 2680 adjustheap (timers, timercnt, active);
2219 } 2681 }
2220 } 2682 }
2221 2683
2222 EV_FREQUENT_CHECK;
2223
2224 ev_at (w) -= mn_now; 2684 ev_at (w) -= mn_now;
2225 2685
2226 ev_stop (EV_A_ (W)w); 2686 ev_stop (EV_A_ (W)w);
2687
2688 EV_FREQUENT_CHECK;
2227} 2689}
2228 2690
2229void noinline 2691void noinline
2230ev_timer_again (EV_P_ ev_timer *w) 2692ev_timer_again (EV_P_ ev_timer *w)
2231{ 2693{
… …
2249 } 2711 }
2250 2712
2251 EV_FREQUENT_CHECK; 2713 EV_FREQUENT_CHECK;
2252} 2714}
2253 2715
2716ev_tstamp
2717ev_timer_remaining (EV_P_ ev_timer *w)
2718{
2719 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2720}
2721
2254#if EV_PERIODIC_ENABLE 2722#if EV_PERIODIC_ENABLE
2255void noinline 2723void noinline
2256ev_periodic_start (EV_P_ ev_periodic *w) 2724ev_periodic_start (EV_P_ ev_periodic *w)
2257{ 2725{
2258 if (expect_false (ev_is_active (w))) 2726 if (expect_false (ev_is_active (w)))
… …
2260 2728
2261 if (w->reschedule_cb) 2729 if (w->reschedule_cb)
2262 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2730 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2263 else if (w->interval) 2731 else if (w->interval)
2264 { 2732 {
2265 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2733 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2266 /* this formula differs from the one in periodic_reify because we do not always round up */ 2734 /* this formula differs from the one in periodic_reify because we do not always round up */
2267 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2735 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2268 } 2736 }
2269 else 2737 else
2270 ev_at (w) = w->offset; 2738 ev_at (w) = w->offset;
… …
2278 ANHE_at_cache (periodics [ev_active (w)]); 2746 ANHE_at_cache (periodics [ev_active (w)]);
2279 upheap (periodics, ev_active (w)); 2747 upheap (periodics, ev_active (w));
2280 2748
2281 EV_FREQUENT_CHECK; 2749 EV_FREQUENT_CHECK;
2282 2750
2283 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2751 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2284} 2752}
2285 2753
2286void noinline 2754void noinline
2287ev_periodic_stop (EV_P_ ev_periodic *w) 2755ev_periodic_stop (EV_P_ ev_periodic *w)
2288{ 2756{
… …
2293 EV_FREQUENT_CHECK; 2761 EV_FREQUENT_CHECK;
2294 2762
2295 { 2763 {
2296 int active = ev_active (w); 2764 int active = ev_active (w);
2297 2765
2298 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2766 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2299 2767
2300 --periodiccnt; 2768 --periodiccnt;
2301 2769
2302 if (expect_true (active < periodiccnt + HEAP0)) 2770 if (expect_true (active < periodiccnt + HEAP0))
2303 { 2771 {
2304 periodics [active] = periodics [periodiccnt + HEAP0]; 2772 periodics [active] = periodics [periodiccnt + HEAP0];
2305 adjustheap (periodics, periodiccnt, active); 2773 adjustheap (periodics, periodiccnt, active);
2306 } 2774 }
2307 } 2775 }
2308 2776
2309 EV_FREQUENT_CHECK;
2310
2311 ev_stop (EV_A_ (W)w); 2777 ev_stop (EV_A_ (W)w);
2778
2779 EV_FREQUENT_CHECK;
2312} 2780}
2313 2781
2314void noinline 2782void noinline
2315ev_periodic_again (EV_P_ ev_periodic *w) 2783ev_periodic_again (EV_P_ ev_periodic *w)
2316{ 2784{
… …
2322 2790
2323#ifndef SA_RESTART 2791#ifndef SA_RESTART
2324# define SA_RESTART 0 2792# define SA_RESTART 0
2325#endif 2793#endif
2326 2794
2795#if EV_SIGNAL_ENABLE
2796
2327void noinline 2797void noinline
2328ev_signal_start (EV_P_ ev_signal *w) 2798ev_signal_start (EV_P_ ev_signal *w)
2329{ 2799{
2330#if EV_MULTIPLICITY
2331 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2332#endif
2333 if (expect_false (ev_is_active (w))) 2800 if (expect_false (ev_is_active (w)))
2334 return; 2801 return;
2335 2802
2336 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2803 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2337 2804
2338 evpipe_init (EV_A); 2805#if EV_MULTIPLICITY
2806 assert (("libev: a signal must not be attached to two different loops",
2807 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2339 2808
2340 EV_FREQUENT_CHECK; 2809 signals [w->signum - 1].loop = EV_A;
2810#endif
2341 2811
2812 EV_FREQUENT_CHECK;
2813
2814#if EV_USE_SIGNALFD
2815 if (sigfd == -2)
2342 { 2816 {
2343#ifndef _WIN32 2817 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2344 sigset_t full, prev; 2818 if (sigfd < 0 && errno == EINVAL)
2345 sigfillset (&full); 2819 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2346 sigprocmask (SIG_SETMASK, &full, &prev);
2347#endif
2348 2820
2349 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2821 if (sigfd >= 0)
2822 {
2823 fd_intern (sigfd); /* doing it twice will not hurt */
2350 2824
2351#ifndef _WIN32 2825 sigemptyset (&sigfd_set);
2352 sigprocmask (SIG_SETMASK, &prev, 0); 2826
2353#endif 2827 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2828 ev_set_priority (&sigfd_w, EV_MAXPRI);
2829 ev_io_start (EV_A_ &sigfd_w);
2830 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2831 }
2354 } 2832 }
2833
2834 if (sigfd >= 0)
2835 {
2836 /* TODO: check .head */
2837 sigaddset (&sigfd_set, w->signum);
2838 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2839
2840 signalfd (sigfd, &sigfd_set, 0);
2841 }
2842#endif
2355 2843
2356 ev_start (EV_A_ (W)w, 1); 2844 ev_start (EV_A_ (W)w, 1);
2357 wlist_add (&signals [w->signum - 1].head, (WL)w); 2845 wlist_add (&signals [w->signum - 1].head, (WL)w);
2358 2846
2359 if (!((WL)w)->next) 2847 if (!((WL)w)->next)
2848# if EV_USE_SIGNALFD
2849 if (sigfd < 0) /*TODO*/
2850# endif
2360 { 2851 {
2361#if _WIN32 2852# ifdef _WIN32
2853 evpipe_init (EV_A);
2854
2362 signal (w->signum, ev_sighandler); 2855 signal (w->signum, ev_sighandler);
2363#else 2856# else
2364 struct sigaction sa; 2857 struct sigaction sa;
2858
2859 evpipe_init (EV_A);
2860
2365 sa.sa_handler = ev_sighandler; 2861 sa.sa_handler = ev_sighandler;
2366 sigfillset (&sa.sa_mask); 2862 sigfillset (&sa.sa_mask);
2367 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2863 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2368 sigaction (w->signum, &sa, 0); 2864 sigaction (w->signum, &sa, 0);
2865
2866 sigemptyset (&sa.sa_mask);
2867 sigaddset (&sa.sa_mask, w->signum);
2868 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2369#endif 2869#endif
2370 } 2870 }
2371 2871
2372 EV_FREQUENT_CHECK; 2872 EV_FREQUENT_CHECK;
2373} 2873}
2374 2874
2375void noinline 2875void noinline
… …
2383 2883
2384 wlist_del (&signals [w->signum - 1].head, (WL)w); 2884 wlist_del (&signals [w->signum - 1].head, (WL)w);
2385 ev_stop (EV_A_ (W)w); 2885 ev_stop (EV_A_ (W)w);
2386 2886
2387 if (!signals [w->signum - 1].head) 2887 if (!signals [w->signum - 1].head)
2888 {
2889#if EV_MULTIPLICITY
2890 signals [w->signum - 1].loop = 0; /* unattach from signal */
2891#endif
2892#if EV_USE_SIGNALFD
2893 if (sigfd >= 0)
2894 {
2895 sigset_t ss;
2896
2897 sigemptyset (&ss);
2898 sigaddset (&ss, w->signum);
2899 sigdelset (&sigfd_set, w->signum);
2900
2901 signalfd (sigfd, &sigfd_set, 0);
2902 sigprocmask (SIG_UNBLOCK, &ss, 0);
2903 }
2904 else
2905#endif
2388 signal (w->signum, SIG_DFL); 2906 signal (w->signum, SIG_DFL);
2907 }
2389 2908
2390 EV_FREQUENT_CHECK; 2909 EV_FREQUENT_CHECK;
2391} 2910}
2911
2912#endif
2913
2914#if EV_CHILD_ENABLE
2392 2915
2393void 2916void
2394ev_child_start (EV_P_ ev_child *w) 2917ev_child_start (EV_P_ ev_child *w)
2395{ 2918{
2396#if EV_MULTIPLICITY 2919#if EV_MULTIPLICITY
2397 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2920 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2398#endif 2921#endif
2399 if (expect_false (ev_is_active (w))) 2922 if (expect_false (ev_is_active (w)))
2400 return; 2923 return;
2401 2924
2402 EV_FREQUENT_CHECK; 2925 EV_FREQUENT_CHECK;
2403 2926
2404 ev_start (EV_A_ (W)w, 1); 2927 ev_start (EV_A_ (W)w, 1);
2405 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2928 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2406 2929
2407 EV_FREQUENT_CHECK; 2930 EV_FREQUENT_CHECK;
2408} 2931}
2409 2932
2410void 2933void
… …
2414 if (expect_false (!ev_is_active (w))) 2937 if (expect_false (!ev_is_active (w)))
2415 return; 2938 return;
2416 2939
2417 EV_FREQUENT_CHECK; 2940 EV_FREQUENT_CHECK;
2418 2941
2419 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2942 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2420 ev_stop (EV_A_ (W)w); 2943 ev_stop (EV_A_ (W)w);
2421 2944
2422 EV_FREQUENT_CHECK; 2945 EV_FREQUENT_CHECK;
2423} 2946}
2947
2948#endif
2424 2949
2425#if EV_STAT_ENABLE 2950#if EV_STAT_ENABLE
2426 2951
2427# ifdef _WIN32 2952# ifdef _WIN32
2428# undef lstat 2953# undef lstat
2429# define lstat(a,b) _stati64 (a,b) 2954# define lstat(a,b) _stati64 (a,b)
2430# endif 2955# endif
2431 2956
2432#define DEF_STAT_INTERVAL 5.0074891 2957#define DEF_STAT_INTERVAL 5.0074891
2958#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2433#define MIN_STAT_INTERVAL 0.1074891 2959#define MIN_STAT_INTERVAL 0.1074891
2434 2960
2435static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2961static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2436 2962
2437#if EV_USE_INOTIFY 2963#if EV_USE_INOTIFY
2438# define EV_INOTIFY_BUFSIZE 8192 2964
2965/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2966# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2439 2967
2440static void noinline 2968static void noinline
2441infy_add (EV_P_ ev_stat *w) 2969infy_add (EV_P_ ev_stat *w)
2442{ 2970{
2443 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); 2971 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);
2444 2972
2445 if (w->wd < 0) 2973 if (w->wd >= 0)
2974 {
2975 struct statfs sfs;
2976
2977 /* now local changes will be tracked by inotify, but remote changes won't */
2978 /* unless the filesystem is known to be local, we therefore still poll */
2979 /* also do poll on <2.6.25, but with normal frequency */
2980
2981 if (!fs_2625)
2982 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2983 else if (!statfs (w->path, &sfs)
2984 && (sfs.f_type == 0x1373 /* devfs */
2985 || sfs.f_type == 0xEF53 /* ext2/3 */
2986 || sfs.f_type == 0x3153464a /* jfs */
2987 || sfs.f_type == 0x52654973 /* reiser3 */
2988 || sfs.f_type == 0x01021994 /* tempfs */
2989 || sfs.f_type == 0x58465342 /* xfs */))
2990 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2991 else
2992 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2446 { 2993 }
2447 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2994 else
2995 {
2996 /* can't use inotify, continue to stat */
2997 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2448 2998
2449 /* monitor some parent directory for speedup hints */ 2999 /* if path is not there, monitor some parent directory for speedup hints */
2450 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3000 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2451 /* but an efficiency issue only */ 3001 /* but an efficiency issue only */
2452 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3002 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2453 { 3003 {
2454 char path [4096]; 3004 char path [4096];
2455 strcpy (path, w->path); 3005 strcpy (path, w->path);
… …
2459 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3009 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2460 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3010 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2461 3011
2462 char *pend = strrchr (path, '/'); 3012 char *pend = strrchr (path, '/');
2463 3013
2464 if (!pend) 3014 if (!pend || pend == path)
2465 break; /* whoops, no '/', complain to your admin */ 3015 break;
2466 3016
2467 *pend = 0; 3017 *pend = 0;
2468 w->wd = inotify_add_watch (fs_fd, path, mask); 3018 w->wd = inotify_add_watch (fs_fd, path, mask);
2469 } 3019 }
2470 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3020 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2471 } 3021 }
2472 } 3022 }
2473 else
2474 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2475 3023
2476 if (w->wd >= 0) 3024 if (w->wd >= 0)
2477 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3025 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3026
3027 /* now re-arm timer, if required */
3028 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3029 ev_timer_again (EV_A_ &w->timer);
3030 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2478} 3031}
2479 3032
2480static void noinline 3033static void noinline
2481infy_del (EV_P_ ev_stat *w) 3034infy_del (EV_P_ ev_stat *w)
2482{ 3035{
… …
2485 3038
2486 if (wd < 0) 3039 if (wd < 0)
2487 return; 3040 return;
2488 3041
2489 w->wd = -2; 3042 w->wd = -2;
2490 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3043 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2491 wlist_del (&fs_hash [slot].head, (WL)w); 3044 wlist_del (&fs_hash [slot].head, (WL)w);
2492 3045
2493 /* remove this watcher, if others are watching it, they will rearm */ 3046 /* remove this watcher, if others are watching it, they will rearm */
2494 inotify_rm_watch (fs_fd, wd); 3047 inotify_rm_watch (fs_fd, wd);
2495} 3048}
2496 3049
2497static void noinline 3050static void noinline
2498infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3051infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2499{ 3052{
2500 if (slot < 0) 3053 if (slot < 0)
2501 /* overflow, need to check for all hahs slots */ 3054 /* overflow, need to check for all hash slots */
2502 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3055 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2503 infy_wd (EV_A_ slot, wd, ev); 3056 infy_wd (EV_A_ slot, wd, ev);
2504 else 3057 else
2505 { 3058 {
2506 WL w_; 3059 WL w_;
2507 3060
2508 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3061 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2509 { 3062 {
2510 ev_stat *w = (ev_stat *)w_; 3063 ev_stat *w = (ev_stat *)w_;
2511 w_ = w_->next; /* lets us remove this watcher and all before it */ 3064 w_ = w_->next; /* lets us remove this watcher and all before it */
2512 3065
2513 if (w->wd == wd || wd == -1) 3066 if (w->wd == wd || wd == -1)
2514 { 3067 {
2515 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3068 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2516 { 3069 {
3070 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2517 w->wd = -1; 3071 w->wd = -1;
2518 infy_add (EV_A_ w); /* re-add, no matter what */ 3072 infy_add (EV_A_ w); /* re-add, no matter what */
2519 } 3073 }
2520 3074
2521 stat_timer_cb (EV_A_ &w->timer, 0); 3075 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2526 3080
2527static void 3081static void
2528infy_cb (EV_P_ ev_io *w, int revents) 3082infy_cb (EV_P_ ev_io *w, int revents)
2529{ 3083{
2530 char buf [EV_INOTIFY_BUFSIZE]; 3084 char buf [EV_INOTIFY_BUFSIZE];
2531 struct inotify_event *ev = (struct inotify_event *)buf;
2532 int ofs; 3085 int ofs;
2533 int len = read (fs_fd, buf, sizeof (buf)); 3086 int len = read (fs_fd, buf, sizeof (buf));
2534 3087
2535 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3088 for (ofs = 0; ofs < len; )
3089 {
3090 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2536 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3091 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3092 ofs += sizeof (struct inotify_event) + ev->len;
3093 }
2537} 3094}
2538 3095
2539void inline_size 3096inline_size void
3097ev_check_2625 (EV_P)
3098{
3099 /* kernels < 2.6.25 are borked
3100 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3101 */
3102 if (ev_linux_version () < 0x020619)
3103 return;
3104
3105 fs_2625 = 1;
3106}
3107
3108inline_size int
3109infy_newfd (void)
3110{
3111#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3112 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3113 if (fd >= 0)
3114 return fd;
3115#endif
3116 return inotify_init ();
3117}
3118
3119inline_size void
2540infy_init (EV_P) 3120infy_init (EV_P)
2541{ 3121{
2542 if (fs_fd != -2) 3122 if (fs_fd != -2)
2543 return; 3123 return;
2544 3124
3125 fs_fd = -1;
3126
3127 ev_check_2625 (EV_A);
3128
2545 fs_fd = inotify_init (); 3129 fs_fd = infy_newfd ();
2546 3130
2547 if (fs_fd >= 0) 3131 if (fs_fd >= 0)
2548 { 3132 {
3133 fd_intern (fs_fd);
2549 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3134 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2550 ev_set_priority (&fs_w, EV_MAXPRI); 3135 ev_set_priority (&fs_w, EV_MAXPRI);
2551 ev_io_start (EV_A_ &fs_w); 3136 ev_io_start (EV_A_ &fs_w);
3137 ev_unref (EV_A);
2552 } 3138 }
2553} 3139}
2554 3140
2555void inline_size 3141inline_size void
2556infy_fork (EV_P) 3142infy_fork (EV_P)
2557{ 3143{
2558 int slot; 3144 int slot;
2559 3145
2560 if (fs_fd < 0) 3146 if (fs_fd < 0)
2561 return; 3147 return;
2562 3148
3149 ev_ref (EV_A);
3150 ev_io_stop (EV_A_ &fs_w);
2563 close (fs_fd); 3151 close (fs_fd);
2564 fs_fd = inotify_init (); 3152 fs_fd = infy_newfd ();
2565 3153
3154 if (fs_fd >= 0)
3155 {
3156 fd_intern (fs_fd);
3157 ev_io_set (&fs_w, fs_fd, EV_READ);
3158 ev_io_start (EV_A_ &fs_w);
3159 ev_unref (EV_A);
3160 }
3161
2566 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3162 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2567 { 3163 {
2568 WL w_ = fs_hash [slot].head; 3164 WL w_ = fs_hash [slot].head;
2569 fs_hash [slot].head = 0; 3165 fs_hash [slot].head = 0;
2570 3166
2571 while (w_) 3167 while (w_)
… …
2576 w->wd = -1; 3172 w->wd = -1;
2577 3173
2578 if (fs_fd >= 0) 3174 if (fs_fd >= 0)
2579 infy_add (EV_A_ w); /* re-add, no matter what */ 3175 infy_add (EV_A_ w); /* re-add, no matter what */
2580 else 3176 else
3177 {
3178 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3179 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2581 ev_timer_start (EV_A_ &w->timer); 3180 ev_timer_again (EV_A_ &w->timer);
3181 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3182 }
2582 } 3183 }
2583
2584 } 3184 }
2585} 3185}
2586 3186
2587#endif 3187#endif
2588 3188
… …
2604static void noinline 3204static void noinline
2605stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3205stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2606{ 3206{
2607 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3207 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2608 3208
2609 /* we copy this here each the time so that */ 3209 ev_statdata prev = w->attr;
2610 /* prev has the old value when the callback gets invoked */
2611 w->prev = w->attr;
2612 ev_stat_stat (EV_A_ w); 3210 ev_stat_stat (EV_A_ w);
2613 3211
2614 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3212 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2615 if ( 3213 if (
2616 w->prev.st_dev != w->attr.st_dev 3214 prev.st_dev != w->attr.st_dev
2617 || w->prev.st_ino != w->attr.st_ino 3215 || prev.st_ino != w->attr.st_ino
2618 || w->prev.st_mode != w->attr.st_mode 3216 || prev.st_mode != w->attr.st_mode
2619 || w->prev.st_nlink != w->attr.st_nlink 3217 || prev.st_nlink != w->attr.st_nlink
2620 || w->prev.st_uid != w->attr.st_uid 3218 || prev.st_uid != w->attr.st_uid
2621 || w->prev.st_gid != w->attr.st_gid 3219 || prev.st_gid != w->attr.st_gid
2622 || w->prev.st_rdev != w->attr.st_rdev 3220 || prev.st_rdev != w->attr.st_rdev
2623 || w->prev.st_size != w->attr.st_size 3221 || prev.st_size != w->attr.st_size
2624 || w->prev.st_atime != w->attr.st_atime 3222 || prev.st_atime != w->attr.st_atime
2625 || w->prev.st_mtime != w->attr.st_mtime 3223 || prev.st_mtime != w->attr.st_mtime
2626 || w->prev.st_ctime != w->attr.st_ctime 3224 || prev.st_ctime != w->attr.st_ctime
2627 ) { 3225 ) {
3226 /* we only update w->prev on actual differences */
3227 /* in case we test more often than invoke the callback, */
3228 /* to ensure that prev is always different to attr */
3229 w->prev = prev;
3230
2628 #if EV_USE_INOTIFY 3231 #if EV_USE_INOTIFY
3232 if (fs_fd >= 0)
3233 {
2629 infy_del (EV_A_ w); 3234 infy_del (EV_A_ w);
2630 infy_add (EV_A_ w); 3235 infy_add (EV_A_ w);
2631 ev_stat_stat (EV_A_ w); /* avoid race... */ 3236 ev_stat_stat (EV_A_ w); /* avoid race... */
3237 }
2632 #endif 3238 #endif
2633 3239
2634 ev_feed_event (EV_A_ w, EV_STAT); 3240 ev_feed_event (EV_A_ w, EV_STAT);
2635 } 3241 }
2636} 3242}
… …
2639ev_stat_start (EV_P_ ev_stat *w) 3245ev_stat_start (EV_P_ ev_stat *w)
2640{ 3246{
2641 if (expect_false (ev_is_active (w))) 3247 if (expect_false (ev_is_active (w)))
2642 return; 3248 return;
2643 3249
2644 /* since we use memcmp, we need to clear any padding data etc. */
2645 memset (&w->prev, 0, sizeof (ev_statdata));
2646 memset (&w->attr, 0, sizeof (ev_statdata));
2647
2648 ev_stat_stat (EV_A_ w); 3250 ev_stat_stat (EV_A_ w);
2649 3251
3252 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2650 if (w->interval < MIN_STAT_INTERVAL) 3253 w->interval = MIN_STAT_INTERVAL;
2651 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2652 3254
2653 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3255 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2654 ev_set_priority (&w->timer, ev_priority (w)); 3256 ev_set_priority (&w->timer, ev_priority (w));
2655 3257
2656#if EV_USE_INOTIFY 3258#if EV_USE_INOTIFY
2657 infy_init (EV_A); 3259 infy_init (EV_A);
2658 3260
2659 if (fs_fd >= 0) 3261 if (fs_fd >= 0)
2660 infy_add (EV_A_ w); 3262 infy_add (EV_A_ w);
2661 else 3263 else
2662#endif 3264#endif
3265 {
2663 ev_timer_start (EV_A_ &w->timer); 3266 ev_timer_again (EV_A_ &w->timer);
3267 ev_unref (EV_A);
3268 }
2664 3269
2665 ev_start (EV_A_ (W)w, 1); 3270 ev_start (EV_A_ (W)w, 1);
2666 3271
2667 EV_FREQUENT_CHECK; 3272 EV_FREQUENT_CHECK;
2668} 3273}
… …
2677 EV_FREQUENT_CHECK; 3282 EV_FREQUENT_CHECK;
2678 3283
2679#if EV_USE_INOTIFY 3284#if EV_USE_INOTIFY
2680 infy_del (EV_A_ w); 3285 infy_del (EV_A_ w);
2681#endif 3286#endif
3287
3288 if (ev_is_active (&w->timer))
3289 {
3290 ev_ref (EV_A);
2682 ev_timer_stop (EV_A_ &w->timer); 3291 ev_timer_stop (EV_A_ &w->timer);
3292 }
2683 3293
2684 ev_stop (EV_A_ (W)w); 3294 ev_stop (EV_A_ (W)w);
2685 3295
2686 EV_FREQUENT_CHECK; 3296 EV_FREQUENT_CHECK;
2687} 3297}
… …
2732 3342
2733 EV_FREQUENT_CHECK; 3343 EV_FREQUENT_CHECK;
2734} 3344}
2735#endif 3345#endif
2736 3346
3347#if EV_PREPARE_ENABLE
2737void 3348void
2738ev_prepare_start (EV_P_ ev_prepare *w) 3349ev_prepare_start (EV_P_ ev_prepare *w)
2739{ 3350{
2740 if (expect_false (ev_is_active (w))) 3351 if (expect_false (ev_is_active (w)))
2741 return; 3352 return;
… …
2767 3378
2768 ev_stop (EV_A_ (W)w); 3379 ev_stop (EV_A_ (W)w);
2769 3380
2770 EV_FREQUENT_CHECK; 3381 EV_FREQUENT_CHECK;
2771} 3382}
3383#endif
2772 3384
3385#if EV_CHECK_ENABLE
2773void 3386void
2774ev_check_start (EV_P_ ev_check *w) 3387ev_check_start (EV_P_ ev_check *w)
2775{ 3388{
2776 if (expect_false (ev_is_active (w))) 3389 if (expect_false (ev_is_active (w)))
2777 return; 3390 return;
… …
2803 3416
2804 ev_stop (EV_A_ (W)w); 3417 ev_stop (EV_A_ (W)w);
2805 3418
2806 EV_FREQUENT_CHECK; 3419 EV_FREQUENT_CHECK;
2807} 3420}
3421#endif
2808 3422
2809#if EV_EMBED_ENABLE 3423#if EV_EMBED_ENABLE
2810void noinline 3424void noinline
2811ev_embed_sweep (EV_P_ ev_embed *w) 3425ev_embed_sweep (EV_P_ ev_embed *w)
2812{ 3426{
2813 ev_loop (w->other, EVLOOP_NONBLOCK); 3427 ev_run (w->other, EVRUN_NOWAIT);
2814} 3428}
2815 3429
2816static void 3430static void
2817embed_io_cb (EV_P_ ev_io *io, int revents) 3431embed_io_cb (EV_P_ ev_io *io, int revents)
2818{ 3432{
2819 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3433 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2820 3434
2821 if (ev_cb (w)) 3435 if (ev_cb (w))
2822 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3436 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2823 else 3437 else
2824 ev_loop (w->other, EVLOOP_NONBLOCK); 3438 ev_run (w->other, EVRUN_NOWAIT);
2825} 3439}
2826 3440
2827static void 3441static void
2828embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3442embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2829{ 3443{
2830 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3444 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2831 3445
2832 { 3446 {
2833 struct ev_loop *loop = w->other; 3447 EV_P = w->other;
2834 3448
2835 while (fdchangecnt) 3449 while (fdchangecnt)
2836 { 3450 {
2837 fd_reify (EV_A); 3451 fd_reify (EV_A);
2838 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3452 ev_run (EV_A_ EVRUN_NOWAIT);
2839 } 3453 }
2840 } 3454 }
2841} 3455}
2842 3456
2843static void 3457static void
2844embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3458embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2845{ 3459{
2846 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3460 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2847 3461
3462 ev_embed_stop (EV_A_ w);
3463
2848 { 3464 {
2849 struct ev_loop *loop = w->other; 3465 EV_P = w->other;
2850 3466
2851 ev_loop_fork (EV_A); 3467 ev_loop_fork (EV_A);
3468 ev_run (EV_A_ EVRUN_NOWAIT);
2852 } 3469 }
3470
3471 ev_embed_start (EV_A_ w);
2853} 3472}
2854 3473
2855#if 0 3474#if 0
2856static void 3475static void
2857embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3476embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2865{ 3484{
2866 if (expect_false (ev_is_active (w))) 3485 if (expect_false (ev_is_active (w)))
2867 return; 3486 return;
2868 3487
2869 { 3488 {
2870 struct ev_loop *loop = w->other; 3489 EV_P = w->other;
2871 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3490 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2872 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3491 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2873 } 3492 }
2874 3493
2875 EV_FREQUENT_CHECK; 3494 EV_FREQUENT_CHECK;
2876 3495
… …
2902 3521
2903 ev_io_stop (EV_A_ &w->io); 3522 ev_io_stop (EV_A_ &w->io);
2904 ev_prepare_stop (EV_A_ &w->prepare); 3523 ev_prepare_stop (EV_A_ &w->prepare);
2905 ev_fork_stop (EV_A_ &w->fork); 3524 ev_fork_stop (EV_A_ &w->fork);
2906 3525
3526 ev_stop (EV_A_ (W)w);
3527
2907 EV_FREQUENT_CHECK; 3528 EV_FREQUENT_CHECK;
2908} 3529}
2909#endif 3530#endif
2910 3531
2911#if EV_FORK_ENABLE 3532#if EV_FORK_ENABLE
… …
2951ev_async_start (EV_P_ ev_async *w) 3572ev_async_start (EV_P_ ev_async *w)
2952{ 3573{
2953 if (expect_false (ev_is_active (w))) 3574 if (expect_false (ev_is_active (w)))
2954 return; 3575 return;
2955 3576
3577 w->sent = 0;
3578
2956 evpipe_init (EV_A); 3579 evpipe_init (EV_A);
2957 3580
2958 EV_FREQUENT_CHECK; 3581 EV_FREQUENT_CHECK;
2959 3582
2960 ev_start (EV_A_ (W)w, ++asynccnt); 3583 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2987 3610
2988void 3611void
2989ev_async_send (EV_P_ ev_async *w) 3612ev_async_send (EV_P_ ev_async *w)
2990{ 3613{
2991 w->sent = 1; 3614 w->sent = 1;
2992 evpipe_write (EV_A_ &gotasync); 3615 evpipe_write (EV_A_ &async_pending);
2993} 3616}
2994#endif 3617#endif
2995 3618
2996/*****************************************************************************/ 3619/*****************************************************************************/
2997 3620
… …
3037{ 3660{
3038 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3039 3662
3040 if (expect_false (!once)) 3663 if (expect_false (!once))
3041 { 3664 {
3042 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3665 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3043 return; 3666 return;
3044 } 3667 }
3045 3668
3046 once->cb = cb; 3669 once->cb = cb;
3047 once->arg = arg; 3670 once->arg = arg;
… …
3059 ev_timer_set (&once->to, timeout, 0.); 3682 ev_timer_set (&once->to, timeout, 0.);
3060 ev_timer_start (EV_A_ &once->to); 3683 ev_timer_start (EV_A_ &once->to);
3061 } 3684 }
3062} 3685}
3063 3686
3687/*****************************************************************************/
3688
3689#if EV_WALK_ENABLE
3690void
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3692{
3693 int i, j;
3694 ev_watcher_list *wl, *wn;
3695
3696 if (types & (EV_IO | EV_EMBED))
3697 for (i = 0; i < anfdmax; ++i)
3698 for (wl = anfds [i].head; wl; )
3699 {
3700 wn = wl->next;
3701
3702#if EV_EMBED_ENABLE
3703 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3704 {
3705 if (types & EV_EMBED)
3706 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3707 }
3708 else
3709#endif
3710#if EV_USE_INOTIFY
3711 if (ev_cb ((ev_io *)wl) == infy_cb)
3712 ;
3713 else
3714#endif
3715 if ((ev_io *)wl != &pipe_w)
3716 if (types & EV_IO)
3717 cb (EV_A_ EV_IO, wl);
3718
3719 wl = wn;
3720 }
3721
3722 if (types & (EV_TIMER | EV_STAT))
3723 for (i = timercnt + HEAP0; i-- > HEAP0; )
3724#if EV_STAT_ENABLE
3725 /*TODO: timer is not always active*/
3726 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3727 {
3728 if (types & EV_STAT)
3729 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3730 }
3731 else
3732#endif
3733 if (types & EV_TIMER)
3734 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3735
3736#if EV_PERIODIC_ENABLE
3737 if (types & EV_PERIODIC)
3738 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif
3741
3742#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; )
3745 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif
3748
3749#if EV_FORK_ENABLE
3750 if (types & EV_FORK)
3751 for (i = forkcnt; i--; )
3752 if (ev_cb (forks [i]) != embed_fork_cb)
3753 cb (EV_A_ EV_FORK, forks [i]);
3754#endif
3755
3756#if EV_ASYNC_ENABLE
3757 if (types & EV_ASYNC)
3758 for (i = asynccnt; i--; )
3759 cb (EV_A_ EV_ASYNC, asyncs [i]);
3760#endif
3761
3762#if EV_PREPARE_ENABLE
3763 if (types & EV_PREPARE)
3764 for (i = preparecnt; i--; )
3765# if EV_EMBED_ENABLE
3766 if (ev_cb (prepares [i]) != embed_prepare_cb)
3767# endif
3768 cb (EV_A_ EV_PREPARE, prepares [i]);
3769#endif
3770
3771#if EV_CHECK_ENABLE
3772 if (types & EV_CHECK)
3773 for (i = checkcnt; i--; )
3774 cb (EV_A_ EV_CHECK, checks [i]);
3775#endif
3776
3777#if EV_SIGNAL_ENABLE
3778 if (types & EV_SIGNAL)
3779 for (i = 0; i < EV_NSIG - 1; ++i)
3780 for (wl = signals [i].head; wl; )
3781 {
3782 wn = wl->next;
3783 cb (EV_A_ EV_SIGNAL, wl);
3784 wl = wn;
3785 }
3786#endif
3787
3788#if EV_CHILD_ENABLE
3789 if (types & EV_CHILD)
3790 for (i = (EV_PID_HASHSIZE); i--; )
3791 for (wl = childs [i]; wl; )
3792 {
3793 wn = wl->next;
3794 cb (EV_A_ EV_CHILD, wl);
3795 wl = wn;
3796 }
3797#endif
3798/* EV_STAT 0x00001000 /* stat data changed */
3799/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3800}
3801#endif
3802
3064#if EV_MULTIPLICITY 3803#if EV_MULTIPLICITY
3065 #include "ev_wrap.h" 3804 #include "ev_wrap.h"
3066#endif 3805#endif
3067 3806
3068#ifdef __cplusplus 3807EV_CPP(})
3069}
3070#endif
3071 3808

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines