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Comparing libev/ev.c (file contents):
Revision 1.251 by root, Thu May 22 03:42:34 2008 UTC vs.
Revision 1.358 by root, Sun Oct 24 14:44:40 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
130# endif 157# endif
131 158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
158#else 189#else
190# include <io.h>
159# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 192# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
163# endif 195# endif
196# undef EV_AVOID_STDIO
164#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
165 206
166/* 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 */
167 208
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
244
168#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else
169# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
250# endif
170#endif 251#endif
171 252
172#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 255#endif
175 256
176#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
258# if _POSIX_C_SOURCE >= 199309L
259# define EV_USE_NANOSLEEP EV_FEATURE_OS
260# else
177# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
262# endif
178#endif 263#endif
179 264
180#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 267#endif
183 268
184#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
185# ifdef _WIN32 270# ifdef _WIN32
186# define EV_USE_POLL 0 271# define EV_USE_POLL 0
187# else 272# else
188# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 274# endif
190#endif 275#endif
191 276
192#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 280# else
196# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
197# endif 282# endif
198#endif 283#endif
199 284
… …
205# define EV_USE_PORT 0 290# define EV_USE_PORT 0
206#endif 291#endif
207 292
208#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 296# else
212# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
213# endif 298# endif
214#endif 299#endif
215 300
216#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 303#endif
223 304
224#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 307#endif
231 308
232#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 312# else
236# 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
237# endif 322# endif
238#endif 323#endif
239 324
240#if 0 /* debugging */ 325#if 0 /* debugging */
241# define EV_VERIFY 3 326# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
244#endif 329#endif
245 330
246#ifndef EV_VERIFY 331#ifndef EV_VERIFY
247# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
248#endif 333#endif
249 334
250#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
251# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
252#endif 337#endif
253 338
254#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
255# 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
256#endif 355#endif
257 356
258/* 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
259 364
260#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
261# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
262# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
263#endif 368#endif
… …
277# include <sys/select.h> 382# include <sys/select.h>
278# endif 383# endif
279#endif 384#endif
280 385
281#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/statfs.h>
282# include <sys/inotify.h> 388# include <sys/inotify.h>
389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
390# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0
393# endif
283#endif 394#endif
284 395
285#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
286# include <winsock.h> 397# include <winsock.h>
287#endif 398#endif
288 399
289#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
290/* 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 */
291# include <stdint.h> 402# include <stdint.h>
292# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
293extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
294# endif 405# endif
295int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
296# ifdef __cplusplus 407# ifdef O_CLOEXEC
297} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
298# 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};
299#endif 436#endif
300 437
301/**/ 438/**/
302 439
303#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
305#else 442#else
306# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
307#endif 444#endif
308 445
309/* 446/*
… …
316 */ 453 */
317#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
318 455
319#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) */
320#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) */
321/*#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)
322 461
323#if __GNUC__ >= 4 462#if __GNUC__ >= 4
324# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
325# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
326#else 465#else
… …
333 472
334#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
335#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
336#define inline_size static inline 475#define inline_size static inline
337 476
338#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
339# 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)
340#else 487#else
341# define inline_speed static inline
342#endif
343
344#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
346 490
347#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
349 493
350typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
352typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
353 497
354#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
356 500
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
357#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
358/* sig_atomic_t is used to avoid per-thread variables or locking but still */
359/* giving it a reasonably high chance of working on typical architetcures */
360static 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)
361#endif 519#endif
362 520
363#ifdef _WIN32 521#ifdef _WIN32
364# include "ev_win32.c" 522# include "ev_win32.c"
365#endif 523#endif
366 524
367/*****************************************************************************/ 525/*****************************************************************************/
368 526
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
369static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
370 578
371void 579void
372ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
373{ 581{
374 syserr_cb = cb; 582 syserr_cb = cb;
375} 583}
376 584
377static void noinline 585static void noinline
378syserr (const char *msg) 586ev_syserr (const char *msg)
379{ 587{
380 if (!msg) 588 if (!msg)
381 msg = "(libev) system error"; 589 msg = "(libev) system error";
382 590
383 if (syserr_cb) 591 if (syserr_cb)
384 syserr_cb (msg); 592 syserr_cb (msg);
385 else 593 else
386 { 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
387 perror (msg); 603 perror (msg);
604#endif
388 abort (); 605 abort ();
389 } 606 }
390} 607}
391 608
392static void * 609static void *
393ev_realloc_emul (void *ptr, long size) 610ev_realloc_emul (void *ptr, long size)
394{ 611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
395 /* some systems, notably openbsd and darwin, fail to properly 615 /* some systems, notably openbsd and darwin, fail to properly
396 * 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
397 * the single unix specification, so work around them here. 617 * the single unix specification, so work around them here.
398 */ 618 */
399 619
400 if (size) 620 if (size)
401 return realloc (ptr, size); 621 return realloc (ptr, size);
402 622
403 free (ptr); 623 free (ptr);
404 return 0; 624 return 0;
625#endif
405} 626}
406 627
407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
408 629
409void 630void
… …
417{ 638{
418 ptr = alloc (ptr, size); 639 ptr = alloc (ptr, size);
419 640
420 if (!ptr && size) 641 if (!ptr && size)
421 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
423 abort (); 648 abort ();
424 } 649 }
425 650
426 return ptr; 651 return ptr;
427} 652}
… …
429#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
430#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
431 656
432/*****************************************************************************/ 657/*****************************************************************************/
433 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
434typedef struct 663typedef struct
435{ 664{
436 WL head; 665 WL head;
437 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 */
438 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
439#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
440 SOCKET handle; 674 SOCKET handle;
441#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
442} ANFD; 679} ANFD;
443 680
681/* stores the pending event set for a given watcher */
444typedef struct 682typedef struct
445{ 683{
446 W w; 684 W w;
447 int events; 685 int events; /* the pending event set for the given watcher */
448} ANPENDING; 686} ANPENDING;
449 687
450#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */ 689/* hash table entry per inotify-id */
452typedef struct 690typedef struct
… …
455} ANFS; 693} ANFS;
456#endif 694#endif
457 695
458/* Heap Entry */ 696/* Heap Entry */
459#if EV_HEAP_CACHE_AT 697#if EV_HEAP_CACHE_AT
698 /* a heap element */
460 typedef struct { 699 typedef struct {
461 ev_tstamp at; 700 ev_tstamp at;
462 WT w; 701 WT w;
463 } ANHE; 702 } ANHE;
464 703
465 #define ANHE_w(he) (he).w /* access watcher, read-write */ 704 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */ 705 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468#else 707#else
708 /* a heap element */
469 typedef WT ANHE; 709 typedef WT ANHE;
470 710
471 #define ANHE_w(he) (he) 711 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at 712 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he) 713 #define ANHE_at_cache(he)
… …
497 737
498 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
499 739
500#endif 740#endif
501 741
742#if EV_FEATURE_API
743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
745# define EV_INVOKE_PENDING invoke_cb (EV_A)
746#else
747# define EV_RELEASE_CB (void)0
748# define EV_ACQUIRE_CB (void)0
749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
750#endif
751
752#define EVBREAK_RECURSE 0x80
753
502/*****************************************************************************/ 754/*****************************************************************************/
503 755
756#ifndef EV_HAVE_EV_TIME
504ev_tstamp 757ev_tstamp
505ev_time (void) 758ev_time (void)
506{ 759{
507#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
508 struct timespec ts; 763 struct timespec ts;
509 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
510 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
511#else 766 }
767#endif
768
512 struct timeval tv; 769 struct timeval tv;
513 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
514 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
515#endif
516} 772}
773#endif
517 774
518ev_tstamp inline_size 775inline_size ev_tstamp
519get_clock (void) 776get_clock (void)
520{ 777{
521#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
522 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
523 { 780 {
… …
544 if (delay > 0.) 801 if (delay > 0.)
545 { 802 {
546#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
547 struct timespec ts; 804 struct timespec ts;
548 805
549 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
550 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
551
552 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
553#elif defined(_WIN32) 808#elif defined(_WIN32)
554 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
555#else 810#else
556 struct timeval tv; 811 struct timeval tv;
557 812
558 tv.tv_sec = (time_t)delay; 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 814 /* something not guaranteed by newer posix versions, but guaranteed */
560 815 /* by older ones */
816 EV_TV_SET (tv, delay);
561 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
562#endif 818#endif
563 } 819 }
564} 820}
565 821
566/*****************************************************************************/ 822/*****************************************************************************/
567 823
568#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569 825
570int inline_size 826/* find a suitable new size for the given array, */
827/* hopefully by rounding to a nice-to-malloc size */
828inline_size int
571array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
572{ 830{
573 int ncur = cur + 1; 831 int ncur = cur + 1;
574 832
575 do 833 do
… …
592array_realloc (int elem, void *base, int *cur, int cnt) 850array_realloc (int elem, void *base, int *cur, int cnt)
593{ 851{
594 *cur = array_nextsize (elem, *cur, cnt); 852 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur); 853 return ev_realloc (base, elem * *cur);
596} 854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
597 858
598#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
599 if (expect_false ((cnt) > (cur))) \ 860 if (expect_false ((cnt) > (cur))) \
600 { \ 861 { \
601 int ocur_ = (cur); \ 862 int ocur_ = (cur); \
… …
613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614 } 875 }
615#endif 876#endif
616 877
617#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
618 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
619 880
620/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
621 888
622void noinline 889void noinline
623ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
624{ 891{
625 W w_ = (W)w; 892 W w_ = (W)w;
… …
634 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
636 } 903 }
637} 904}
638 905
639void inline_speed 906inline_speed void
907feed_reverse (EV_P_ W w)
908{
909 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
910 rfeeds [rfeedcnt++] = w;
911}
912
913inline_size void
914feed_reverse_done (EV_P_ int revents)
915{
916 do
917 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
918 while (rfeedcnt);
919}
920
921inline_speed void
640queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
641{ 923{
642 int i; 924 int i;
643 925
644 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
646} 928}
647 929
648/*****************************************************************************/ 930/*****************************************************************************/
649 931
650void inline_size 932inline_speed void
651anfds_init (ANFD *base, int count)
652{
653 while (count--)
654 {
655 base->head = 0;
656 base->events = EV_NONE;
657 base->reify = 0;
658
659 ++base;
660 }
661}
662
663void inline_speed
664fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
665{ 934{
666 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
667 ev_io *w; 936 ev_io *w;
668 937
669 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
673 if (ev) 942 if (ev)
674 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
675 } 944 }
676} 945}
677 946
947/* do not submit kernel events for fds that have reify set */
948/* because that means they changed while we were polling for new events */
949inline_speed void
950fd_event (EV_P_ int fd, int revents)
951{
952 ANFD *anfd = anfds + fd;
953
954 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents);
956}
957
678void 958void
679ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
680{ 960{
681 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
682 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
683} 963}
684 964
685void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
686fd_reify (EV_P) 968fd_reify (EV_P)
687{ 969{
688 int i; 970 int i;
689 971
690 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
691 { 973 {
692 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
693 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
694 ev_io *w; 976 ev_io *w;
695 977
696 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
697 980
698 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
699 events |= (unsigned char)w->events;
700 982
701#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
702 if (events) 984 if (o_reify & EV__IOFDSET)
703 { 985 {
704 unsigned long argp; 986 unsigned long arg;
705 #ifdef EV_FD_TO_WIN32_HANDLE
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
707 #else
708 anfd->handle = _get_osfhandle (fd);
709 #endif
710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
711 } 990 }
712#endif 991#endif
713 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
714 { 994 {
715 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify;
717
718 anfd->reify = 0;
719 anfd->events = events; 995 anfd->events = 0;
720 996
721 if (o_events != events || o_reify & EV_IOFDSET) 997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
723 }
724 } 1006 }
725 1007
726 fdchangecnt = 0; 1008 fdchangecnt = 0;
727} 1009}
728 1010
729void inline_size 1011/* something about the given fd changed */
1012inline_size void
730fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
731{ 1014{
732 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
733 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
734 1017
… …
738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
740 } 1023 }
741} 1024}
742 1025
743void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
744fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
745{ 1029{
746 ev_io *w; 1030 ev_io *w;
747 1031
748 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
750 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
751 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
752 } 1036 }
753} 1037}
754 1038
755int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
756fd_valid (int fd) 1041fd_valid (int fd)
757{ 1042{
758#ifdef _WIN32 1043#ifdef _WIN32
759 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
760#else 1045#else
761 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
762#endif 1047#endif
763} 1048}
764 1049
… …
768{ 1053{
769 int fd; 1054 int fd;
770 1055
771 for (fd = 0; fd < anfdmax; ++fd) 1056 for (fd = 0; fd < anfdmax; ++fd)
772 if (anfds [fd].events) 1057 if (anfds [fd].events)
773 if (!fd_valid (fd) == -1 && errno == EBADF) 1058 if (!fd_valid (fd) && errno == EBADF)
774 fd_kill (EV_A_ fd); 1059 fd_kill (EV_A_ fd);
775} 1060}
776 1061
777/* called on ENOMEM in select/poll to kill some fds and retry */ 1062/* called on ENOMEM in select/poll to kill some fds and retry */
778static void noinline 1063static void noinline
… …
782 1067
783 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
784 if (anfds [fd].events) 1069 if (anfds [fd].events)
785 { 1070 {
786 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
787 return; 1072 break;
788 } 1073 }
789} 1074}
790 1075
791/* usually called after fork if backend needs to re-arm all fds from scratch */ 1076/* usually called after fork if backend needs to re-arm all fds from scratch */
792static void noinline 1077static void noinline
… …
796 1081
797 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
798 if (anfds [fd].events) 1083 if (anfds [fd].events)
799 { 1084 {
800 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
1086 anfds [fd].emask = 0;
801 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802 } 1088 }
803} 1089}
804 1090
1091/* used to prepare libev internal fd's */
1092/* this is not fork-safe */
1093inline_speed void
1094fd_intern (int fd)
1095{
1096#ifdef _WIN32
1097 unsigned long arg = 1;
1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1099#else
1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
1101 fcntl (fd, F_SETFL, O_NONBLOCK);
1102#endif
1103}
1104
805/*****************************************************************************/ 1105/*****************************************************************************/
806 1106
807/* 1107/*
808 * the heap functions want a real array index. array index 0 uis guaranteed to not 1108 * the heap functions want a real array index. array index 0 is guaranteed to not
809 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
810 * the branching factor of the d-tree. 1110 * the branching factor of the d-tree.
811 */ 1111 */
812 1112
813/* 1113/*
… …
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k)) 1124#define UPHEAP_DONE(p,k) ((p) == (k))
825 1125
826/* away from the root */ 1126/* away from the root */
827void inline_speed 1127inline_speed void
828downheap (ANHE *heap, int N, int k) 1128downheap (ANHE *heap, int N, int k)
829{ 1129{
830 ANHE he = heap [k]; 1130 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0; 1131 ANHE *E = heap + N + HEAP0;
832 1132
… …
872#define HEAP0 1 1172#define HEAP0 1
873#define HPARENT(k) ((k) >> 1) 1173#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p)) 1174#define UPHEAP_DONE(p,k) (!(p))
875 1175
876/* away from the root */ 1176/* away from the root */
877void inline_speed 1177inline_speed void
878downheap (ANHE *heap, int N, int k) 1178downheap (ANHE *heap, int N, int k)
879{ 1179{
880 ANHE he = heap [k]; 1180 ANHE he = heap [k];
881 1181
882 for (;;) 1182 for (;;)
883 { 1183 {
884 int c = k << 1; 1184 int c = k << 1;
885 1185
886 if (c > N + HEAP0 - 1) 1186 if (c >= N + HEAP0)
887 break; 1187 break;
888 1188
889 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
890 ? 1 : 0; 1190 ? 1 : 0;
891 1191
… …
902 ev_active (ANHE_w (he)) = k; 1202 ev_active (ANHE_w (he)) = k;
903} 1203}
904#endif 1204#endif
905 1205
906/* towards the root */ 1206/* towards the root */
907void inline_speed 1207inline_speed void
908upheap (ANHE *heap, int k) 1208upheap (ANHE *heap, int k)
909{ 1209{
910 ANHE he = heap [k]; 1210 ANHE he = heap [k];
911 1211
912 for (;;) 1212 for (;;)
… …
923 1223
924 heap [k] = he; 1224 heap [k] = he;
925 ev_active (ANHE_w (he)) = k; 1225 ev_active (ANHE_w (he)) = k;
926} 1226}
927 1227
928void inline_size 1228/* move an element suitably so it is in a correct place */
1229inline_size void
929adjustheap (ANHE *heap, int N, int k) 1230adjustheap (ANHE *heap, int N, int k)
930{ 1231{
931 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
932 upheap (heap, k); 1233 upheap (heap, k);
933 else 1234 else
934 downheap (heap, N, k); 1235 downheap (heap, N, k);
935} 1236}
936 1237
937/* rebuild the heap: this function is used only once and executed rarely */ 1238/* rebuild the heap: this function is used only once and executed rarely */
938void inline_size 1239inline_size void
939reheap (ANHE *heap, int N) 1240reheap (ANHE *heap, int N)
940{ 1241{
941 int i; 1242 int i;
942 1243
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1244 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
946 upheap (heap, i + HEAP0); 1247 upheap (heap, i + HEAP0);
947} 1248}
948 1249
949/*****************************************************************************/ 1250/*****************************************************************************/
950 1251
1252/* associate signal watchers to a signal signal */
951typedef struct 1253typedef struct
952{ 1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
953 WL head; 1259 WL head;
954 EV_ATOMIC_T gotsig;
955} ANSIG; 1260} ANSIG;
956 1261
957static ANSIG *signals; 1262static ANSIG signals [EV_NSIG - 1];
958static int signalmax;
959
960static EV_ATOMIC_T gotsig;
961
962void inline_size
963signals_init (ANSIG *base, int count)
964{
965 while (count--)
966 {
967 base->head = 0;
968 base->gotsig = 0;
969
970 ++base;
971 }
972}
973 1263
974/*****************************************************************************/ 1264/*****************************************************************************/
975 1265
976void inline_speed 1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
977fd_intern (int fd)
978{
979#ifdef _WIN32
980 int arg = 1;
981 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
982#else
983 fcntl (fd, F_SETFD, FD_CLOEXEC);
984 fcntl (fd, F_SETFL, O_NONBLOCK);
985#endif
986}
987 1267
988static void noinline 1268static void noinline
989evpipe_init (EV_P) 1269evpipe_init (EV_P)
990{ 1270{
991 if (!ev_is_active (&pipeev)) 1271 if (!ev_is_active (&pipe_w))
992 { 1272 {
993#if EV_USE_EVENTFD 1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
994 if ((evfd = eventfd (0, 0)) >= 0) 1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
995 { 1279 {
996 evpipe [0] = -1; 1280 evpipe [0] = -1;
997 fd_intern (evfd); 1281 fd_intern (evfd); /* doing it twice doesn't hurt */
998 ev_io_set (&pipeev, evfd, EV_READ); 1282 ev_io_set (&pipe_w, evfd, EV_READ);
999 } 1283 }
1000 else 1284 else
1001#endif 1285# endif
1002 { 1286 {
1003 while (pipe (evpipe)) 1287 while (pipe (evpipe))
1004 syserr ("(libev) error creating signal/async pipe"); 1288 ev_syserr ("(libev) error creating signal/async pipe");
1005 1289
1006 fd_intern (evpipe [0]); 1290 fd_intern (evpipe [0]);
1007 fd_intern (evpipe [1]); 1291 fd_intern (evpipe [1]);
1008 ev_io_set (&pipeev, evpipe [0], EV_READ); 1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1009 } 1293 }
1010 1294
1011 ev_io_start (EV_A_ &pipeev); 1295 ev_io_start (EV_A_ &pipe_w);
1012 ev_unref (EV_A); /* watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1013 } 1297 }
1014} 1298}
1015 1299
1016void inline_size 1300inline_size void
1017evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1018{ 1302{
1019 if (!*flag) 1303 if (!*flag)
1020 { 1304 {
1021 int old_errno = errno; /* save errno because write might clobber it */ 1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1022 1307
1023 *flag = 1; 1308 *flag = 1;
1024 1309
1025#if EV_USE_EVENTFD 1310#if EV_USE_EVENTFD
1026 if (evfd >= 0) 1311 if (evfd >= 0)
… …
1028 uint64_t counter = 1; 1313 uint64_t counter = 1;
1029 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
1030 } 1315 }
1031 else 1316 else
1032#endif 1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1033 write (evpipe [1], &old_errno, 1); 1323 write (evpipe [1], &dummy, 1);
1034 1324
1035 errno = old_errno; 1325 errno = old_errno;
1036 } 1326 }
1037} 1327}
1038 1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
1039static void 1331static void
1040pipecb (EV_P_ ev_io *iow, int revents) 1332pipecb (EV_P_ ev_io *iow, int revents)
1041{ 1333{
1334 int i;
1335
1042#if EV_USE_EVENTFD 1336#if EV_USE_EVENTFD
1043 if (evfd >= 0) 1337 if (evfd >= 0)
1044 { 1338 {
1045 uint64_t counter; 1339 uint64_t counter;
1046 read (evfd, &counter, sizeof (uint64_t)); 1340 read (evfd, &counter, sizeof (uint64_t));
1047 } 1341 }
1048 else 1342 else
1049#endif 1343#endif
1050 { 1344 {
1051 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1052 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
1053 } 1348 }
1054 1349
1055 if (gotsig && ev_is_default_loop (EV_A)) 1350 if (sig_pending)
1056 { 1351 {
1057 int signum; 1352 sig_pending = 0;
1058 gotsig = 0;
1059 1353
1060 for (signum = signalmax; signum--; ) 1354 for (i = EV_NSIG - 1; i--; )
1061 if (signals [signum].gotsig) 1355 if (expect_false (signals [i].pending))
1062 ev_feed_signal_event (EV_A_ signum + 1); 1356 ev_feed_signal_event (EV_A_ i + 1);
1063 } 1357 }
1064 1358
1065#if EV_ASYNC_ENABLE 1359#if EV_ASYNC_ENABLE
1066 if (gotasync) 1360 if (async_pending)
1067 { 1361 {
1068 int i; 1362 async_pending = 0;
1069 gotasync = 0;
1070 1363
1071 for (i = asynccnt; i--; ) 1364 for (i = asynccnt; i--; )
1072 if (asyncs [i]->sent) 1365 if (asyncs [i]->sent)
1073 { 1366 {
1074 asyncs [i]->sent = 0; 1367 asyncs [i]->sent = 0;
… …
1082 1375
1083static void 1376static void
1084ev_sighandler (int signum) 1377ev_sighandler (int signum)
1085{ 1378{
1086#if EV_MULTIPLICITY 1379#if EV_MULTIPLICITY
1087 struct ev_loop *loop = &default_loop_struct; 1380 EV_P = signals [signum - 1].loop;
1088#endif 1381#endif
1089 1382
1090#if _WIN32 1383#ifdef _WIN32
1091 signal (signum, ev_sighandler); 1384 signal (signum, ev_sighandler);
1092#endif 1385#endif
1093 1386
1094 signals [signum - 1].gotsig = 1; 1387 signals [signum - 1].pending = 1;
1095 evpipe_write (EV_A_ &gotsig); 1388 evpipe_write (EV_A_ &sig_pending);
1096} 1389}
1097 1390
1098void noinline 1391void noinline
1099ev_feed_signal_event (EV_P_ int signum) 1392ev_feed_signal_event (EV_P_ int signum)
1100{ 1393{
1101 WL w; 1394 WL w;
1102 1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1103#if EV_MULTIPLICITY 1401#if EV_MULTIPLICITY
1104 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1402 /* it is permissible to try to feed a signal to the wrong loop */
1105#endif 1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1106 1404
1107 --signum; 1405 if (expect_false (signals [signum].loop != EV_A))
1108
1109 if (signum < 0 || signum >= signalmax)
1110 return; 1406 return;
1407#endif
1111 1408
1112 signals [signum].gotsig = 0; 1409 signals [signum].pending = 0;
1113 1410
1114 for (w = signals [signum].head; w; w = w->next) 1411 for (w = signals [signum].head; w; w = w->next)
1115 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1116} 1413}
1117 1414
1415#if EV_USE_SIGNALFD
1416static void
1417sigfdcb (EV_P_ ev_io *iow, int revents)
1418{
1419 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1420
1421 for (;;)
1422 {
1423 ssize_t res = read (sigfd, si, sizeof (si));
1424
1425 /* not ISO-C, as res might be -1, but works with SuS */
1426 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1427 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1428
1429 if (res < (ssize_t)sizeof (si))
1430 break;
1431 }
1432}
1433#endif
1434
1435#endif
1436
1118/*****************************************************************************/ 1437/*****************************************************************************/
1119 1438
1439#if EV_CHILD_ENABLE
1120static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
1121
1122#ifndef _WIN32
1123 1441
1124static ev_signal childev; 1442static ev_signal childev;
1125 1443
1126#ifndef WIFCONTINUED 1444#ifndef WIFCONTINUED
1127# define WIFCONTINUED(status) 0 1445# define WIFCONTINUED(status) 0
1128#endif 1446#endif
1129 1447
1130void inline_speed 1448/* handle a single child status event */
1449inline_speed void
1131child_reap (EV_P_ int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
1132{ 1451{
1133 ev_child *w; 1452 ev_child *w;
1134 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1135 1454
1136 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1455 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1137 { 1456 {
1138 if ((w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1139 && (!traced || (w->flags & 1))) 1458 && (!traced || (w->flags & 1)))
1140 { 1459 {
1141 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1460 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1148 1467
1149#ifndef WCONTINUED 1468#ifndef WCONTINUED
1150# define WCONTINUED 0 1469# define WCONTINUED 0
1151#endif 1470#endif
1152 1471
1472/* called on sigchld etc., calls waitpid */
1153static void 1473static void
1154childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
1155{ 1475{
1156 int pid, status; 1476 int pid, status;
1157 1477
… …
1165 /* make sure we are called again until all children have been reaped */ 1485 /* make sure we are called again until all children have been reaped */
1166 /* we need to do it this way so that the callback gets called before we continue */ 1486 /* we need to do it this way so that the callback gets called before we continue */
1167 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1168 1488
1169 child_reap (EV_A_ pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1170 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
1171 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1491 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1172} 1492}
1173 1493
1174#endif 1494#endif
1175 1495
1176/*****************************************************************************/ 1496/*****************************************************************************/
1177 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1178#if EV_USE_PORT 1501#if EV_USE_PORT
1179# include "ev_port.c" 1502# include "ev_port.c"
1180#endif 1503#endif
1181#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1182# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
1238 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
1239 /* it usually doesn't work correctly on anything but sockets and pipes */ 1562 /* it usually doesn't work correctly on anything but sockets and pipes */
1240 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
1241#endif 1564#endif
1242#ifdef __APPLE__ 1565#ifdef __APPLE__
1243 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
1244 flags &= ~EVBACKEND_POLL; 1567 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1568 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1569#endif
1570#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1245#endif 1572#endif
1246 1573
1247 return flags; 1574 return flags;
1248} 1575}
1249 1576
… …
1251ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1252{ 1579{
1253 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1254 1581
1255 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1256 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1257 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1258 1585
1259 return flags; 1586 return flags;
1260} 1587}
1261 1588
1262unsigned int 1589unsigned int
1263ev_backend (EV_P) 1590ev_backend (EV_P)
1264{ 1591{
1265 return backend; 1592 return backend;
1266} 1593}
1267 1594
1595#if EV_FEATURE_API
1268unsigned int 1596unsigned int
1269ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1270{ 1598{
1271 return loop_count; 1599 return loop_count;
1272} 1600}
1273 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
1274void 1608void
1275ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1276{ 1610{
1277 io_blocktime = interval; 1611 io_blocktime = interval;
1278} 1612}
… …
1281ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1282{ 1616{
1283 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1284} 1618}
1285 1619
1620void
1621ev_set_userdata (EV_P_ void *data)
1622{
1623 userdata = data;
1624}
1625
1626void *
1627ev_userdata (EV_P)
1628{
1629 return userdata;
1630}
1631
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1633{
1634 invoke_cb = invoke_pending_cb;
1635}
1636
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1638{
1639 release_cb = release;
1640 acquire_cb = acquire;
1641}
1642#endif
1643
1644/* initialise a loop structure, must be zero-initialised */
1286static void noinline 1645static void noinline
1287loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1288{ 1647{
1289 if (!backend) 1648 if (!backend)
1290 { 1649 {
1650#if EV_USE_REALTIME
1651 if (!have_realtime)
1652 {
1653 struct timespec ts;
1654
1655 if (!clock_gettime (CLOCK_REALTIME, &ts))
1656 have_realtime = 1;
1657 }
1658#endif
1659
1291#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1292 { 1662 {
1293 struct timespec ts; 1663 struct timespec ts;
1664
1294 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1295 have_monotonic = 1; 1666 have_monotonic = 1;
1296 } 1667 }
1297#endif 1668#endif
1669
1670 /* pid check not overridable via env */
1671#ifndef _WIN32
1672 if (flags & EVFLAG_FORKCHECK)
1673 curpid = getpid ();
1674#endif
1675
1676 if (!(flags & EVFLAG_NOENV)
1677 && !enable_secure ()
1678 && getenv ("LIBEV_FLAGS"))
1679 flags = atoi (getenv ("LIBEV_FLAGS"));
1298 1680
1299 ev_rt_now = ev_time (); 1681 ev_rt_now = ev_time ();
1300 mn_now = get_clock (); 1682 mn_now = get_clock ();
1301 now_floor = mn_now; 1683 now_floor = mn_now;
1302 rtmn_diff = ev_rt_now - mn_now; 1684 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending;
1687#endif
1303 1688
1304 io_blocktime = 0.; 1689 io_blocktime = 0.;
1305 timeout_blocktime = 0.; 1690 timeout_blocktime = 0.;
1306 backend = 0; 1691 backend = 0;
1307 backend_fd = -1; 1692 backend_fd = -1;
1308 gotasync = 0; 1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1309#if EV_USE_INOTIFY 1697#if EV_USE_INOTIFY
1310 fs_fd = -2; 1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1311#endif 1699#endif
1312 1700#if EV_USE_SIGNALFD
1313 /* pid check not overridable via env */ 1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1314#ifndef _WIN32
1315 if (flags & EVFLAG_FORKCHECK)
1316 curpid = getpid ();
1317#endif 1702#endif
1318
1319 if (!(flags & EVFLAG_NOENV)
1320 && !enable_secure ()
1321 && getenv ("LIBEV_FLAGS"))
1322 flags = atoi (getenv ("LIBEV_FLAGS"));
1323 1703
1324 if (!(flags & 0x0000ffffU)) 1704 if (!(flags & 0x0000ffffU))
1325 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1326 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1327#if EV_USE_PORT 1710#if EV_USE_PORT
1328 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1329#endif 1712#endif
1330#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1331 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1338#endif 1721#endif
1339#if EV_USE_SELECT 1722#if EV_USE_SELECT
1340 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1341#endif 1724#endif
1342 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1343 ev_init (&pipeev, pipecb); 1729 ev_init (&pipe_w, pipecb);
1344 ev_set_priority (&pipeev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1345 } 1732 }
1346} 1733}
1347 1734
1735/* free up a loop structure */
1348static void noinline 1736static void noinline
1349loop_destroy (EV_P) 1737loop_destroy (EV_P)
1350{ 1738{
1351 int i; 1739 int i;
1352 1740
1353 if (ev_is_active (&pipeev)) 1741 if (ev_is_active (&pipe_w))
1354 { 1742 {
1355 ev_ref (EV_A); /* signal watcher */ 1743 /*ev_ref (EV_A);*/
1356 ev_io_stop (EV_A_ &pipeev); 1744 /*ev_io_stop (EV_A_ &pipe_w);*/
1357 1745
1358#if EV_USE_EVENTFD 1746#if EV_USE_EVENTFD
1359 if (evfd >= 0) 1747 if (evfd >= 0)
1360 close (evfd); 1748 close (evfd);
1361#endif 1749#endif
1362 1750
1363 if (evpipe [0] >= 0) 1751 if (evpipe [0] >= 0)
1364 { 1752 {
1365 close (evpipe [0]); 1753 EV_WIN32_CLOSE_FD (evpipe [0]);
1366 close (evpipe [1]); 1754 EV_WIN32_CLOSE_FD (evpipe [1]);
1367 } 1755 }
1368 } 1756 }
1757
1758#if EV_USE_SIGNALFD
1759 if (ev_is_active (&sigfd_w))
1760 close (sigfd);
1761#endif
1369 1762
1370#if EV_USE_INOTIFY 1763#if EV_USE_INOTIFY
1371 if (fs_fd >= 0) 1764 if (fs_fd >= 0)
1372 close (fs_fd); 1765 close (fs_fd);
1373#endif 1766#endif
1374 1767
1375 if (backend_fd >= 0) 1768 if (backend_fd >= 0)
1376 close (backend_fd); 1769 close (backend_fd);
1377 1770
1771#if EV_USE_IOCP
1772 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1773#endif
1378#if EV_USE_PORT 1774#if EV_USE_PORT
1379 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1775 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1380#endif 1776#endif
1381#if EV_USE_KQUEUE 1777#if EV_USE_KQUEUE
1382 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1778 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1397#if EV_IDLE_ENABLE 1793#if EV_IDLE_ENABLE
1398 array_free (idle, [i]); 1794 array_free (idle, [i]);
1399#endif 1795#endif
1400 } 1796 }
1401 1797
1402 ev_free (anfds); anfdmax = 0; 1798 ev_free (anfds); anfds = 0; anfdmax = 0;
1403 1799
1404 /* have to use the microsoft-never-gets-it-right macro */ 1800 /* have to use the microsoft-never-gets-it-right macro */
1801 array_free (rfeed, EMPTY);
1405 array_free (fdchange, EMPTY); 1802 array_free (fdchange, EMPTY);
1406 array_free (timer, EMPTY); 1803 array_free (timer, EMPTY);
1407#if EV_PERIODIC_ENABLE 1804#if EV_PERIODIC_ENABLE
1408 array_free (periodic, EMPTY); 1805 array_free (periodic, EMPTY);
1409#endif 1806#endif
… …
1418 1815
1419 backend = 0; 1816 backend = 0;
1420} 1817}
1421 1818
1422#if EV_USE_INOTIFY 1819#if EV_USE_INOTIFY
1423void inline_size infy_fork (EV_P); 1820inline_size void infy_fork (EV_P);
1424#endif 1821#endif
1425 1822
1426void inline_size 1823inline_size void
1427loop_fork (EV_P) 1824loop_fork (EV_P)
1428{ 1825{
1429#if EV_USE_PORT 1826#if EV_USE_PORT
1430 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1827 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1431#endif 1828#endif
… …
1437#endif 1834#endif
1438#if EV_USE_INOTIFY 1835#if EV_USE_INOTIFY
1439 infy_fork (EV_A); 1836 infy_fork (EV_A);
1440#endif 1837#endif
1441 1838
1442 if (ev_is_active (&pipeev)) 1839 if (ev_is_active (&pipe_w))
1443 { 1840 {
1444 /* this "locks" the handlers against writing to the pipe */ 1841 /* this "locks" the handlers against writing to the pipe */
1445 /* while we modify the fd vars */ 1842 /* while we modify the fd vars */
1446 gotsig = 1; 1843 sig_pending = 1;
1447#if EV_ASYNC_ENABLE 1844#if EV_ASYNC_ENABLE
1448 gotasync = 1; 1845 async_pending = 1;
1449#endif 1846#endif
1450 1847
1451 ev_ref (EV_A); 1848 ev_ref (EV_A);
1452 ev_io_stop (EV_A_ &pipeev); 1849 ev_io_stop (EV_A_ &pipe_w);
1453 1850
1454#if EV_USE_EVENTFD 1851#if EV_USE_EVENTFD
1455 if (evfd >= 0) 1852 if (evfd >= 0)
1456 close (evfd); 1853 close (evfd);
1457#endif 1854#endif
1458 1855
1459 if (evpipe [0] >= 0) 1856 if (evpipe [0] >= 0)
1460 { 1857 {
1461 close (evpipe [0]); 1858 EV_WIN32_CLOSE_FD (evpipe [0]);
1462 close (evpipe [1]); 1859 EV_WIN32_CLOSE_FD (evpipe [1]);
1463 } 1860 }
1464 1861
1862#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1465 evpipe_init (EV_A); 1863 evpipe_init (EV_A);
1466 /* now iterate over everything, in case we missed something */ 1864 /* now iterate over everything, in case we missed something */
1467 pipecb (EV_A_ &pipeev, EV_READ); 1865 pipecb (EV_A_ &pipe_w, EV_READ);
1866#endif
1468 } 1867 }
1469 1868
1470 postfork = 0; 1869 postfork = 0;
1471} 1870}
1472 1871
1473#if EV_MULTIPLICITY 1872#if EV_MULTIPLICITY
1474 1873
1475struct ev_loop * 1874struct ev_loop *
1476ev_loop_new (unsigned int flags) 1875ev_loop_new (unsigned int flags)
1477{ 1876{
1478 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1877 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1479 1878
1480 memset (loop, 0, sizeof (struct ev_loop)); 1879 memset (EV_A, 0, sizeof (struct ev_loop));
1481
1482 loop_init (EV_A_ flags); 1880 loop_init (EV_A_ flags);
1483 1881
1484 if (ev_backend (EV_A)) 1882 if (ev_backend (EV_A))
1485 return loop; 1883 return EV_A;
1486 1884
1487 return 0; 1885 return 0;
1488} 1886}
1489 1887
1490void 1888void
… …
1497void 1895void
1498ev_loop_fork (EV_P) 1896ev_loop_fork (EV_P)
1499{ 1897{
1500 postfork = 1; /* must be in line with ev_default_fork */ 1898 postfork = 1; /* must be in line with ev_default_fork */
1501} 1899}
1900#endif /* multiplicity */
1502 1901
1503#if EV_VERIFY 1902#if EV_VERIFY
1504void noinline 1903static void noinline
1505verify_watcher (EV_P_ W w) 1904verify_watcher (EV_P_ W w)
1506{ 1905{
1507 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1906 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1508 1907
1509 if (w->pending) 1908 if (w->pending)
1510 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1909 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1511} 1910}
1512 1911
1513static void noinline 1912static void noinline
1514verify_heap (EV_P_ ANHE *heap, int N) 1913verify_heap (EV_P_ ANHE *heap, int N)
1515{ 1914{
1516 int i; 1915 int i;
1517 1916
1518 for (i = HEAP0; i < N + HEAP0; ++i) 1917 for (i = HEAP0; i < N + HEAP0; ++i)
1519 { 1918 {
1520 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1919 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1521 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1920 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1522 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1921 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1523 1922
1524 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1923 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1525 } 1924 }
1526} 1925}
1527 1926
1528static void noinline 1927static void noinline
1529array_verify (EV_P_ W *ws, int cnt) 1928array_verify (EV_P_ W *ws, int cnt)
1530{ 1929{
1531 while (cnt--) 1930 while (cnt--)
1532 { 1931 {
1533 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1932 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1534 verify_watcher (EV_A_ ws [cnt]); 1933 verify_watcher (EV_A_ ws [cnt]);
1535 } 1934 }
1536} 1935}
1537#endif 1936#endif
1538 1937
1938#if EV_FEATURE_API
1539void 1939void
1540ev_loop_verify (EV_P) 1940ev_verify (EV_P)
1541{ 1941{
1542#if EV_VERIFY 1942#if EV_VERIFY
1543 int i; 1943 int i;
1544 WL w; 1944 WL w;
1545 1945
1546 assert (activecnt >= -1); 1946 assert (activecnt >= -1);
1547 1947
1548 assert (fdchangemax >= fdchangecnt); 1948 assert (fdchangemax >= fdchangecnt);
1549 for (i = 0; i < fdchangecnt; ++i) 1949 for (i = 0; i < fdchangecnt; ++i)
1550 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1950 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1551 1951
1552 assert (anfdmax >= 0); 1952 assert (anfdmax >= 0);
1553 for (i = 0; i < anfdmax; ++i) 1953 for (i = 0; i < anfdmax; ++i)
1554 for (w = anfds [i].head; w; w = w->next) 1954 for (w = anfds [i].head; w; w = w->next)
1555 { 1955 {
1556 verify_watcher (EV_A_ (W)w); 1956 verify_watcher (EV_A_ (W)w);
1557 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1957 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1558 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1958 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1559 } 1959 }
1560 1960
1561 assert (timermax >= timercnt); 1961 assert (timermax >= timercnt);
1562 verify_heap (EV_A_ timers, timercnt); 1962 verify_heap (EV_A_ timers, timercnt);
1563 1963
… …
1568 1968
1569 for (i = NUMPRI; i--; ) 1969 for (i = NUMPRI; i--; )
1570 { 1970 {
1571 assert (pendingmax [i] >= pendingcnt [i]); 1971 assert (pendingmax [i] >= pendingcnt [i]);
1572#if EV_IDLE_ENABLE 1972#if EV_IDLE_ENABLE
1973 assert (idleall >= 0);
1573 assert (idlemax [i] >= idlecnt [i]); 1974 assert (idlemax [i] >= idlecnt [i]);
1574 array_verify (EV_A_ (W *)idles [i], idlecnt [i]); 1975 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1575#endif 1976#endif
1576 } 1977 }
1577 1978
… …
1583#if EV_ASYNC_ENABLE 1984#if EV_ASYNC_ENABLE
1584 assert (asyncmax >= asynccnt); 1985 assert (asyncmax >= asynccnt);
1585 array_verify (EV_A_ (W *)asyncs, asynccnt); 1986 array_verify (EV_A_ (W *)asyncs, asynccnt);
1586#endif 1987#endif
1587 1988
1989#if EV_PREPARE_ENABLE
1588 assert (preparemax >= preparecnt); 1990 assert (preparemax >= preparecnt);
1589 array_verify (EV_A_ (W *)prepares, preparecnt); 1991 array_verify (EV_A_ (W *)prepares, preparecnt);
1992#endif
1590 1993
1994#if EV_CHECK_ENABLE
1591 assert (checkmax >= checkcnt); 1995 assert (checkmax >= checkcnt);
1592 array_verify (EV_A_ (W *)checks, checkcnt); 1996 array_verify (EV_A_ (W *)checks, checkcnt);
1997#endif
1593 1998
1594# if 0 1999# if 0
2000#if EV_CHILD_ENABLE
1595 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2001 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1596 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2002 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2003#endif
1597# endif 2004# endif
1598#endif 2005#endif
1599} 2006}
1600 2007#endif
1601#endif /* multiplicity */
1602 2008
1603#if EV_MULTIPLICITY 2009#if EV_MULTIPLICITY
1604struct ev_loop * 2010struct ev_loop *
1605ev_default_loop_init (unsigned int flags)
1606#else 2011#else
1607int 2012int
2013#endif
1608ev_default_loop (unsigned int flags) 2014ev_default_loop (unsigned int flags)
1609#endif
1610{ 2015{
1611 if (!ev_default_loop_ptr) 2016 if (!ev_default_loop_ptr)
1612 { 2017 {
1613#if EV_MULTIPLICITY 2018#if EV_MULTIPLICITY
1614 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2019 EV_P = ev_default_loop_ptr = &default_loop_struct;
1615#else 2020#else
1616 ev_default_loop_ptr = 1; 2021 ev_default_loop_ptr = 1;
1617#endif 2022#endif
1618 2023
1619 loop_init (EV_A_ flags); 2024 loop_init (EV_A_ flags);
1620 2025
1621 if (ev_backend (EV_A)) 2026 if (ev_backend (EV_A))
1622 { 2027 {
1623#ifndef _WIN32 2028#if EV_CHILD_ENABLE
1624 ev_signal_init (&childev, childcb, SIGCHLD); 2029 ev_signal_init (&childev, childcb, SIGCHLD);
1625 ev_set_priority (&childev, EV_MAXPRI); 2030 ev_set_priority (&childev, EV_MAXPRI);
1626 ev_signal_start (EV_A_ &childev); 2031 ev_signal_start (EV_A_ &childev);
1627 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2032 ev_unref (EV_A); /* child watcher should not keep loop alive */
1628#endif 2033#endif
… …
1636 2041
1637void 2042void
1638ev_default_destroy (void) 2043ev_default_destroy (void)
1639{ 2044{
1640#if EV_MULTIPLICITY 2045#if EV_MULTIPLICITY
1641 struct ev_loop *loop = ev_default_loop_ptr; 2046 EV_P = ev_default_loop_ptr;
1642#endif 2047#endif
1643 2048
1644#ifndef _WIN32 2049 ev_default_loop_ptr = 0;
2050
2051#if EV_CHILD_ENABLE
1645 ev_ref (EV_A); /* child watcher */ 2052 ev_ref (EV_A); /* child watcher */
1646 ev_signal_stop (EV_A_ &childev); 2053 ev_signal_stop (EV_A_ &childev);
1647#endif 2054#endif
1648 2055
1649 loop_destroy (EV_A); 2056 loop_destroy (EV_A);
… …
1651 2058
1652void 2059void
1653ev_default_fork (void) 2060ev_default_fork (void)
1654{ 2061{
1655#if EV_MULTIPLICITY 2062#if EV_MULTIPLICITY
1656 struct ev_loop *loop = ev_default_loop_ptr; 2063 EV_P = ev_default_loop_ptr;
1657#endif 2064#endif
1658 2065
1659 if (backend)
1660 postfork = 1; /* must be in line with ev_loop_fork */ 2066 postfork = 1; /* must be in line with ev_loop_fork */
1661} 2067}
1662 2068
1663/*****************************************************************************/ 2069/*****************************************************************************/
1664 2070
1665void 2071void
1666ev_invoke (EV_P_ void *w, int revents) 2072ev_invoke (EV_P_ void *w, int revents)
1667{ 2073{
1668 EV_CB_INVOKE ((W)w, revents); 2074 EV_CB_INVOKE ((W)w, revents);
1669} 2075}
1670 2076
1671void inline_speed 2077unsigned int
1672call_pending (EV_P) 2078ev_pending_count (EV_P)
2079{
2080 int pri;
2081 unsigned int count = 0;
2082
2083 for (pri = NUMPRI; pri--; )
2084 count += pendingcnt [pri];
2085
2086 return count;
2087}
2088
2089void noinline
2090ev_invoke_pending (EV_P)
1673{ 2091{
1674 int pri; 2092 int pri;
1675 2093
1676 for (pri = NUMPRI; pri--; ) 2094 for (pri = NUMPRI; pri--; )
1677 while (pendingcnt [pri]) 2095 while (pendingcnt [pri])
1678 { 2096 {
1679 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2097 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1680 2098
1681 if (expect_true (p->w))
1682 {
1683 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2099 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2100 /* ^ this is no longer true, as pending_w could be here */
1684 2101
1685 p->w->pending = 0; 2102 p->w->pending = 0;
1686 EV_CB_INVOKE (p->w, p->events); 2103 EV_CB_INVOKE (p->w, p->events);
1687 EV_FREQUENT_CHECK; 2104 EV_FREQUENT_CHECK;
1688 }
1689 } 2105 }
1690} 2106}
1691 2107
1692#if EV_IDLE_ENABLE 2108#if EV_IDLE_ENABLE
1693void inline_size 2109/* make idle watchers pending. this handles the "call-idle */
2110/* only when higher priorities are idle" logic */
2111inline_size void
1694idle_reify (EV_P) 2112idle_reify (EV_P)
1695{ 2113{
1696 if (expect_false (idleall)) 2114 if (expect_false (idleall))
1697 { 2115 {
1698 int pri; 2116 int pri;
… …
1710 } 2128 }
1711 } 2129 }
1712} 2130}
1713#endif 2131#endif
1714 2132
1715void inline_size 2133/* make timers pending */
2134inline_size void
1716timers_reify (EV_P) 2135timers_reify (EV_P)
1717{ 2136{
1718 EV_FREQUENT_CHECK; 2137 EV_FREQUENT_CHECK;
1719 2138
1720 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2139 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1721 { 2140 {
1722 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2141 do
1723
1724 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1725
1726 /* first reschedule or stop timer */
1727 if (w->repeat)
1728 { 2142 {
2143 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2144
2145 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2146
2147 /* first reschedule or stop timer */
2148 if (w->repeat)
2149 {
1729 ev_at (w) += w->repeat; 2150 ev_at (w) += w->repeat;
1730 if (ev_at (w) < mn_now) 2151 if (ev_at (w) < mn_now)
1731 ev_at (w) = mn_now; 2152 ev_at (w) = mn_now;
1732 2153
1733 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2154 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1734 2155
1735 ANHE_at_cache (timers [HEAP0]); 2156 ANHE_at_cache (timers [HEAP0]);
1736 downheap (timers, timercnt, HEAP0); 2157 downheap (timers, timercnt, HEAP0);
2158 }
2159 else
2160 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2161
2162 EV_FREQUENT_CHECK;
2163 feed_reverse (EV_A_ (W)w);
1737 } 2164 }
1738 else 2165 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1739 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1740 2166
1741 EV_FREQUENT_CHECK; 2167 feed_reverse_done (EV_A_ EV_TIMER);
1742 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1743 } 2168 }
1744} 2169}
1745 2170
1746#if EV_PERIODIC_ENABLE 2171#if EV_PERIODIC_ENABLE
1747void inline_size 2172/* make periodics pending */
2173inline_size void
1748periodics_reify (EV_P) 2174periodics_reify (EV_P)
1749{ 2175{
1750 EV_FREQUENT_CHECK; 2176 EV_FREQUENT_CHECK;
1751 2177
1752 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2178 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1753 { 2179 {
1754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2180 int feed_count = 0;
1755 2181
1756 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2182 do
1757
1758 /* first reschedule or stop timer */
1759 if (w->reschedule_cb)
1760 { 2183 {
2184 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2185
2186 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2187
2188 /* first reschedule or stop timer */
2189 if (w->reschedule_cb)
2190 {
1761 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1762 2192
1763 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2193 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1764 2194
1765 ANHE_at_cache (periodics [HEAP0]); 2195 ANHE_at_cache (periodics [HEAP0]);
1766 downheap (periodics, periodiccnt, HEAP0); 2196 downheap (periodics, periodiccnt, HEAP0);
2197 }
2198 else if (w->interval)
2199 {
2200 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2201 /* if next trigger time is not sufficiently in the future, put it there */
2202 /* this might happen because of floating point inexactness */
2203 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2204 {
2205 ev_at (w) += w->interval;
2206
2207 /* if interval is unreasonably low we might still have a time in the past */
2208 /* so correct this. this will make the periodic very inexact, but the user */
2209 /* has effectively asked to get triggered more often than possible */
2210 if (ev_at (w) < ev_rt_now)
2211 ev_at (w) = ev_rt_now;
2212 }
2213
2214 ANHE_at_cache (periodics [HEAP0]);
2215 downheap (periodics, periodiccnt, HEAP0);
2216 }
2217 else
2218 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2219
2220 EV_FREQUENT_CHECK;
2221 feed_reverse (EV_A_ (W)w);
1767 } 2222 }
1768 else if (w->interval) 2223 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1769 {
1770 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1771 /* if next trigger time is not sufficiently in the future, put it there */
1772 /* this might happen because of floating point inexactness */
1773 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1774 {
1775 ev_at (w) += w->interval;
1776 2224
1777 /* if interval is unreasonably low we might still have a time in the past */
1778 /* so correct this. this will make the periodic very inexact, but the user */
1779 /* has effectively asked to get triggered more often than possible */
1780 if (ev_at (w) < ev_rt_now)
1781 ev_at (w) = ev_rt_now;
1782 }
1783
1784 ANHE_at_cache (periodics [HEAP0]);
1785 downheap (periodics, periodiccnt, HEAP0);
1786 }
1787 else
1788 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1789
1790 EV_FREQUENT_CHECK;
1791 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2225 feed_reverse_done (EV_A_ EV_PERIODIC);
1792 } 2226 }
1793} 2227}
1794 2228
2229/* simply recalculate all periodics */
2230/* TODO: maybe ensure that at least one event happens when jumping forward? */
1795static void noinline 2231static void noinline
1796periodics_reschedule (EV_P) 2232periodics_reschedule (EV_P)
1797{ 2233{
1798 int i; 2234 int i;
1799 2235
… …
1812 2248
1813 reheap (periodics, periodiccnt); 2249 reheap (periodics, periodiccnt);
1814} 2250}
1815#endif 2251#endif
1816 2252
1817void inline_speed 2253/* adjust all timers by a given offset */
2254static void noinline
2255timers_reschedule (EV_P_ ev_tstamp adjust)
2256{
2257 int i;
2258
2259 for (i = 0; i < timercnt; ++i)
2260 {
2261 ANHE *he = timers + i + HEAP0;
2262 ANHE_w (*he)->at += adjust;
2263 ANHE_at_cache (*he);
2264 }
2265}
2266
2267/* fetch new monotonic and realtime times from the kernel */
2268/* also detect if there was a timejump, and act accordingly */
2269inline_speed void
1818time_update (EV_P_ ev_tstamp max_block) 2270time_update (EV_P_ ev_tstamp max_block)
1819{ 2271{
1820 int i;
1821
1822#if EV_USE_MONOTONIC 2272#if EV_USE_MONOTONIC
1823 if (expect_true (have_monotonic)) 2273 if (expect_true (have_monotonic))
1824 { 2274 {
2275 int i;
1825 ev_tstamp odiff = rtmn_diff; 2276 ev_tstamp odiff = rtmn_diff;
1826 2277
1827 mn_now = get_clock (); 2278 mn_now = get_clock ();
1828 2279
1829 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2280 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1855 ev_rt_now = ev_time (); 2306 ev_rt_now = ev_time ();
1856 mn_now = get_clock (); 2307 mn_now = get_clock ();
1857 now_floor = mn_now; 2308 now_floor = mn_now;
1858 } 2309 }
1859 2310
2311 /* no timer adjustment, as the monotonic clock doesn't jump */
2312 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1860# if EV_PERIODIC_ENABLE 2313# if EV_PERIODIC_ENABLE
1861 periodics_reschedule (EV_A); 2314 periodics_reschedule (EV_A);
1862# endif 2315# endif
1863 /* no timer adjustment, as the monotonic clock doesn't jump */
1864 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865 } 2316 }
1866 else 2317 else
1867#endif 2318#endif
1868 { 2319 {
1869 ev_rt_now = ev_time (); 2320 ev_rt_now = ev_time ();
1870 2321
1871 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2322 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1872 { 2323 {
2324 /* adjust timers. this is easy, as the offset is the same for all of them */
2325 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1873#if EV_PERIODIC_ENABLE 2326#if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 2327 periodics_reschedule (EV_A);
1875#endif 2328#endif
1876 /* adjust timers. this is easy, as the offset is the same for all of them */
1877 for (i = 0; i < timercnt; ++i)
1878 {
1879 ANHE *he = timers + i + HEAP0;
1880 ANHE_w (*he)->at += ev_rt_now - mn_now;
1881 ANHE_at_cache (*he);
1882 }
1883 } 2329 }
1884 2330
1885 mn_now = ev_rt_now; 2331 mn_now = ev_rt_now;
1886 } 2332 }
1887} 2333}
1888 2334
1889void 2335void
1890ev_ref (EV_P)
1891{
1892 ++activecnt;
1893}
1894
1895void
1896ev_unref (EV_P)
1897{
1898 --activecnt;
1899}
1900
1901static int loop_done;
1902
1903void
1904ev_loop (EV_P_ int flags) 2336ev_run (EV_P_ int flags)
1905{ 2337{
2338#if EV_FEATURE_API
2339 ++loop_depth;
2340#endif
2341
2342 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2343
1906 loop_done = EVUNLOOP_CANCEL; 2344 loop_done = EVBREAK_CANCEL;
1907 2345
1908 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2346 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1909 2347
1910 do 2348 do
1911 { 2349 {
1912#if EV_VERIFY >= 2 2350#if EV_VERIFY >= 2
1913 ev_loop_verify (EV_A); 2351 ev_verify (EV_A);
1914#endif 2352#endif
1915 2353
1916#ifndef _WIN32 2354#ifndef _WIN32
1917 if (expect_false (curpid)) /* penalise the forking check even more */ 2355 if (expect_false (curpid)) /* penalise the forking check even more */
1918 if (expect_false (getpid () != curpid)) 2356 if (expect_false (getpid () != curpid))
… …
1926 /* we might have forked, so queue fork handlers */ 2364 /* we might have forked, so queue fork handlers */
1927 if (expect_false (postfork)) 2365 if (expect_false (postfork))
1928 if (forkcnt) 2366 if (forkcnt)
1929 { 2367 {
1930 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2368 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1931 call_pending (EV_A); 2369 EV_INVOKE_PENDING;
1932 } 2370 }
1933#endif 2371#endif
1934 2372
2373#if EV_PREPARE_ENABLE
1935 /* queue prepare watchers (and execute them) */ 2374 /* queue prepare watchers (and execute them) */
1936 if (expect_false (preparecnt)) 2375 if (expect_false (preparecnt))
1937 { 2376 {
1938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2377 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1939 call_pending (EV_A); 2378 EV_INVOKE_PENDING;
1940 } 2379 }
2380#endif
1941 2381
1942 if (expect_false (!activecnt)) 2382 if (expect_false (loop_done))
1943 break; 2383 break;
1944 2384
1945 /* we might have forked, so reify kernel state if necessary */ 2385 /* we might have forked, so reify kernel state if necessary */
1946 if (expect_false (postfork)) 2386 if (expect_false (postfork))
1947 loop_fork (EV_A); 2387 loop_fork (EV_A);
… …
1952 /* calculate blocking time */ 2392 /* calculate blocking time */
1953 { 2393 {
1954 ev_tstamp waittime = 0.; 2394 ev_tstamp waittime = 0.;
1955 ev_tstamp sleeptime = 0.; 2395 ev_tstamp sleeptime = 0.;
1956 2396
2397 /* remember old timestamp for io_blocktime calculation */
2398 ev_tstamp prev_mn_now = mn_now;
2399
2400 /* update time to cancel out callback processing overhead */
2401 time_update (EV_A_ 1e100);
2402
1957 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2403 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1958 { 2404 {
1959 /* update time to cancel out callback processing overhead */
1960 time_update (EV_A_ 1e100);
1961
1962 waittime = MAX_BLOCKTIME; 2405 waittime = MAX_BLOCKTIME;
1963 2406
1964 if (timercnt) 2407 if (timercnt)
1965 { 2408 {
1966 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2409 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1973 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2416 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1974 if (waittime > to) waittime = to; 2417 if (waittime > to) waittime = to;
1975 } 2418 }
1976#endif 2419#endif
1977 2420
2421 /* don't let timeouts decrease the waittime below timeout_blocktime */
1978 if (expect_false (waittime < timeout_blocktime)) 2422 if (expect_false (waittime < timeout_blocktime))
1979 waittime = timeout_blocktime; 2423 waittime = timeout_blocktime;
1980 2424
1981 sleeptime = waittime - backend_fudge; 2425 /* extra check because io_blocktime is commonly 0 */
1982
1983 if (expect_true (sleeptime > io_blocktime)) 2426 if (expect_false (io_blocktime))
1984 sleeptime = io_blocktime;
1985
1986 if (sleeptime)
1987 { 2427 {
2428 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2429
2430 if (sleeptime > waittime - backend_fudge)
2431 sleeptime = waittime - backend_fudge;
2432
2433 if (expect_true (sleeptime > 0.))
2434 {
1988 ev_sleep (sleeptime); 2435 ev_sleep (sleeptime);
1989 waittime -= sleeptime; 2436 waittime -= sleeptime;
2437 }
1990 } 2438 }
1991 } 2439 }
1992 2440
2441#if EV_FEATURE_API
1993 ++loop_count; 2442 ++loop_count;
2443#endif
2444 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1994 backend_poll (EV_A_ waittime); 2445 backend_poll (EV_A_ waittime);
2446 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1995 2447
1996 /* update ev_rt_now, do magic */ 2448 /* update ev_rt_now, do magic */
1997 time_update (EV_A_ waittime + sleeptime); 2449 time_update (EV_A_ waittime + sleeptime);
1998 } 2450 }
1999 2451
… …
2006#if EV_IDLE_ENABLE 2458#if EV_IDLE_ENABLE
2007 /* queue idle watchers unless other events are pending */ 2459 /* queue idle watchers unless other events are pending */
2008 idle_reify (EV_A); 2460 idle_reify (EV_A);
2009#endif 2461#endif
2010 2462
2463#if EV_CHECK_ENABLE
2011 /* queue check watchers, to be executed first */ 2464 /* queue check watchers, to be executed first */
2012 if (expect_false (checkcnt)) 2465 if (expect_false (checkcnt))
2013 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2466 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2467#endif
2014 2468
2015 call_pending (EV_A); 2469 EV_INVOKE_PENDING;
2016 } 2470 }
2017 while (expect_true ( 2471 while (expect_true (
2018 activecnt 2472 activecnt
2019 && !loop_done 2473 && !loop_done
2020 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2474 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2021 )); 2475 ));
2022 2476
2023 if (loop_done == EVUNLOOP_ONE) 2477 if (loop_done == EVBREAK_ONE)
2024 loop_done = EVUNLOOP_CANCEL; 2478 loop_done = EVBREAK_CANCEL;
2025}
2026 2479
2480#if EV_FEATURE_API
2481 --loop_depth;
2482#endif
2483}
2484
2027void 2485void
2028ev_unloop (EV_P_ int how) 2486ev_break (EV_P_ int how)
2029{ 2487{
2030 loop_done = how; 2488 loop_done = how;
2031} 2489}
2032 2490
2491void
2492ev_ref (EV_P)
2493{
2494 ++activecnt;
2495}
2496
2497void
2498ev_unref (EV_P)
2499{
2500 --activecnt;
2501}
2502
2503void
2504ev_now_update (EV_P)
2505{
2506 time_update (EV_A_ 1e100);
2507}
2508
2509void
2510ev_suspend (EV_P)
2511{
2512 ev_now_update (EV_A);
2513}
2514
2515void
2516ev_resume (EV_P)
2517{
2518 ev_tstamp mn_prev = mn_now;
2519
2520 ev_now_update (EV_A);
2521 timers_reschedule (EV_A_ mn_now - mn_prev);
2522#if EV_PERIODIC_ENABLE
2523 /* TODO: really do this? */
2524 periodics_reschedule (EV_A);
2525#endif
2526}
2527
2033/*****************************************************************************/ 2528/*****************************************************************************/
2529/* singly-linked list management, used when the expected list length is short */
2034 2530
2035void inline_size 2531inline_size void
2036wlist_add (WL *head, WL elem) 2532wlist_add (WL *head, WL elem)
2037{ 2533{
2038 elem->next = *head; 2534 elem->next = *head;
2039 *head = elem; 2535 *head = elem;
2040} 2536}
2041 2537
2042void inline_size 2538inline_size void
2043wlist_del (WL *head, WL elem) 2539wlist_del (WL *head, WL elem)
2044{ 2540{
2045 while (*head) 2541 while (*head)
2046 { 2542 {
2047 if (*head == elem) 2543 if (expect_true (*head == elem))
2048 { 2544 {
2049 *head = elem->next; 2545 *head = elem->next;
2050 return; 2546 break;
2051 } 2547 }
2052 2548
2053 head = &(*head)->next; 2549 head = &(*head)->next;
2054 } 2550 }
2055} 2551}
2056 2552
2057void inline_speed 2553/* internal, faster, version of ev_clear_pending */
2554inline_speed void
2058clear_pending (EV_P_ W w) 2555clear_pending (EV_P_ W w)
2059{ 2556{
2060 if (w->pending) 2557 if (w->pending)
2061 { 2558 {
2062 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2559 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2063 w->pending = 0; 2560 w->pending = 0;
2064 } 2561 }
2065} 2562}
2066 2563
2067int 2564int
… …
2071 int pending = w_->pending; 2568 int pending = w_->pending;
2072 2569
2073 if (expect_true (pending)) 2570 if (expect_true (pending))
2074 { 2571 {
2075 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2572 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2573 p->w = (W)&pending_w;
2076 w_->pending = 0; 2574 w_->pending = 0;
2077 p->w = 0;
2078 return p->events; 2575 return p->events;
2079 } 2576 }
2080 else 2577 else
2081 return 0; 2578 return 0;
2082} 2579}
2083 2580
2084void inline_size 2581inline_size void
2085pri_adjust (EV_P_ W w) 2582pri_adjust (EV_P_ W w)
2086{ 2583{
2087 int pri = w->priority; 2584 int pri = ev_priority (w);
2088 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2585 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2089 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2586 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2090 w->priority = pri; 2587 ev_set_priority (w, pri);
2091} 2588}
2092 2589
2093void inline_speed 2590inline_speed void
2094ev_start (EV_P_ W w, int active) 2591ev_start (EV_P_ W w, int active)
2095{ 2592{
2096 pri_adjust (EV_A_ w); 2593 pri_adjust (EV_A_ w);
2097 w->active = active; 2594 w->active = active;
2098 ev_ref (EV_A); 2595 ev_ref (EV_A);
2099} 2596}
2100 2597
2101void inline_size 2598inline_size void
2102ev_stop (EV_P_ W w) 2599ev_stop (EV_P_ W w)
2103{ 2600{
2104 ev_unref (EV_A); 2601 ev_unref (EV_A);
2105 w->active = 0; 2602 w->active = 0;
2106} 2603}
… …
2113 int fd = w->fd; 2610 int fd = w->fd;
2114 2611
2115 if (expect_false (ev_is_active (w))) 2612 if (expect_false (ev_is_active (w)))
2116 return; 2613 return;
2117 2614
2118 assert (("ev_io_start called with negative fd", fd >= 0)); 2615 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2616 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2119 2617
2120 EV_FREQUENT_CHECK; 2618 EV_FREQUENT_CHECK;
2121 2619
2122 ev_start (EV_A_ (W)w, 1); 2620 ev_start (EV_A_ (W)w, 1);
2123 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2621 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2124 wlist_add (&anfds[fd].head, (WL)w); 2622 wlist_add (&anfds[fd].head, (WL)w);
2125 2623
2126 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2624 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2127 w->events &= ~EV_IOFDSET; 2625 w->events &= ~EV__IOFDSET;
2128 2626
2129 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
2130} 2628}
2131 2629
2132void noinline 2630void noinline
… …
2134{ 2632{
2135 clear_pending (EV_A_ (W)w); 2633 clear_pending (EV_A_ (W)w);
2136 if (expect_false (!ev_is_active (w))) 2634 if (expect_false (!ev_is_active (w)))
2137 return; 2635 return;
2138 2636
2139 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2637 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2140 2638
2141 EV_FREQUENT_CHECK; 2639 EV_FREQUENT_CHECK;
2142 2640
2143 wlist_del (&anfds[w->fd].head, (WL)w); 2641 wlist_del (&anfds[w->fd].head, (WL)w);
2144 ev_stop (EV_A_ (W)w); 2642 ev_stop (EV_A_ (W)w);
2145 2643
2146 fd_change (EV_A_ w->fd, 1); 2644 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2147 2645
2148 EV_FREQUENT_CHECK; 2646 EV_FREQUENT_CHECK;
2149} 2647}
2150 2648
2151void noinline 2649void noinline
… …
2154 if (expect_false (ev_is_active (w))) 2652 if (expect_false (ev_is_active (w)))
2155 return; 2653 return;
2156 2654
2157 ev_at (w) += mn_now; 2655 ev_at (w) += mn_now;
2158 2656
2159 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2657 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2160 2658
2161 EV_FREQUENT_CHECK; 2659 EV_FREQUENT_CHECK;
2162 2660
2163 ++timercnt; 2661 ++timercnt;
2164 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2662 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2167 ANHE_at_cache (timers [ev_active (w)]); 2665 ANHE_at_cache (timers [ev_active (w)]);
2168 upheap (timers, ev_active (w)); 2666 upheap (timers, ev_active (w));
2169 2667
2170 EV_FREQUENT_CHECK; 2668 EV_FREQUENT_CHECK;
2171 2669
2172 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2670 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2173} 2671}
2174 2672
2175void noinline 2673void noinline
2176ev_timer_stop (EV_P_ ev_timer *w) 2674ev_timer_stop (EV_P_ ev_timer *w)
2177{ 2675{
… …
2182 EV_FREQUENT_CHECK; 2680 EV_FREQUENT_CHECK;
2183 2681
2184 { 2682 {
2185 int active = ev_active (w); 2683 int active = ev_active (w);
2186 2684
2187 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2685 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2188 2686
2189 --timercnt; 2687 --timercnt;
2190 2688
2191 if (expect_true (active < timercnt + HEAP0)) 2689 if (expect_true (active < timercnt + HEAP0))
2192 { 2690 {
2193 timers [active] = timers [timercnt + HEAP0]; 2691 timers [active] = timers [timercnt + HEAP0];
2194 adjustheap (timers, timercnt, active); 2692 adjustheap (timers, timercnt, active);
2195 } 2693 }
2196 } 2694 }
2197 2695
2198 EV_FREQUENT_CHECK;
2199
2200 ev_at (w) -= mn_now; 2696 ev_at (w) -= mn_now;
2201 2697
2202 ev_stop (EV_A_ (W)w); 2698 ev_stop (EV_A_ (W)w);
2699
2700 EV_FREQUENT_CHECK;
2203} 2701}
2204 2702
2205void noinline 2703void noinline
2206ev_timer_again (EV_P_ ev_timer *w) 2704ev_timer_again (EV_P_ ev_timer *w)
2207{ 2705{
… …
2225 } 2723 }
2226 2724
2227 EV_FREQUENT_CHECK; 2725 EV_FREQUENT_CHECK;
2228} 2726}
2229 2727
2728ev_tstamp
2729ev_timer_remaining (EV_P_ ev_timer *w)
2730{
2731 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2732}
2733
2230#if EV_PERIODIC_ENABLE 2734#if EV_PERIODIC_ENABLE
2231void noinline 2735void noinline
2232ev_periodic_start (EV_P_ ev_periodic *w) 2736ev_periodic_start (EV_P_ ev_periodic *w)
2233{ 2737{
2234 if (expect_false (ev_is_active (w))) 2738 if (expect_false (ev_is_active (w)))
… …
2236 2740
2237 if (w->reschedule_cb) 2741 if (w->reschedule_cb)
2238 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2742 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2239 else if (w->interval) 2743 else if (w->interval)
2240 { 2744 {
2241 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2745 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2242 /* this formula differs from the one in periodic_reify because we do not always round up */ 2746 /* this formula differs from the one in periodic_reify because we do not always round up */
2243 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2747 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2244 } 2748 }
2245 else 2749 else
2246 ev_at (w) = w->offset; 2750 ev_at (w) = w->offset;
… …
2254 ANHE_at_cache (periodics [ev_active (w)]); 2758 ANHE_at_cache (periodics [ev_active (w)]);
2255 upheap (periodics, ev_active (w)); 2759 upheap (periodics, ev_active (w));
2256 2760
2257 EV_FREQUENT_CHECK; 2761 EV_FREQUENT_CHECK;
2258 2762
2259 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2763 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2260} 2764}
2261 2765
2262void noinline 2766void noinline
2263ev_periodic_stop (EV_P_ ev_periodic *w) 2767ev_periodic_stop (EV_P_ ev_periodic *w)
2264{ 2768{
… …
2269 EV_FREQUENT_CHECK; 2773 EV_FREQUENT_CHECK;
2270 2774
2271 { 2775 {
2272 int active = ev_active (w); 2776 int active = ev_active (w);
2273 2777
2274 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2778 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2275 2779
2276 --periodiccnt; 2780 --periodiccnt;
2277 2781
2278 if (expect_true (active < periodiccnt + HEAP0)) 2782 if (expect_true (active < periodiccnt + HEAP0))
2279 { 2783 {
2280 periodics [active] = periodics [periodiccnt + HEAP0]; 2784 periodics [active] = periodics [periodiccnt + HEAP0];
2281 adjustheap (periodics, periodiccnt, active); 2785 adjustheap (periodics, periodiccnt, active);
2282 } 2786 }
2283 } 2787 }
2284 2788
2285 EV_FREQUENT_CHECK;
2286
2287 ev_stop (EV_A_ (W)w); 2789 ev_stop (EV_A_ (W)w);
2790
2791 EV_FREQUENT_CHECK;
2288} 2792}
2289 2793
2290void noinline 2794void noinline
2291ev_periodic_again (EV_P_ ev_periodic *w) 2795ev_periodic_again (EV_P_ ev_periodic *w)
2292{ 2796{
… …
2298 2802
2299#ifndef SA_RESTART 2803#ifndef SA_RESTART
2300# define SA_RESTART 0 2804# define SA_RESTART 0
2301#endif 2805#endif
2302 2806
2807#if EV_SIGNAL_ENABLE
2808
2303void noinline 2809void noinline
2304ev_signal_start (EV_P_ ev_signal *w) 2810ev_signal_start (EV_P_ ev_signal *w)
2305{ 2811{
2306#if EV_MULTIPLICITY
2307 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2308#endif
2309 if (expect_false (ev_is_active (w))) 2812 if (expect_false (ev_is_active (w)))
2310 return; 2813 return;
2311 2814
2312 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2815 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2313 2816
2314 evpipe_init (EV_A); 2817#if EV_MULTIPLICITY
2818 assert (("libev: a signal must not be attached to two different loops",
2819 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2315 2820
2316 EV_FREQUENT_CHECK; 2821 signals [w->signum - 1].loop = EV_A;
2822#endif
2317 2823
2824 EV_FREQUENT_CHECK;
2825
2826#if EV_USE_SIGNALFD
2827 if (sigfd == -2)
2318 { 2828 {
2319#ifndef _WIN32 2829 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2320 sigset_t full, prev; 2830 if (sigfd < 0 && errno == EINVAL)
2321 sigfillset (&full); 2831 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2322 sigprocmask (SIG_SETMASK, &full, &prev);
2323#endif
2324 2832
2325 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2833 if (sigfd >= 0)
2834 {
2835 fd_intern (sigfd); /* doing it twice will not hurt */
2326 2836
2327#ifndef _WIN32 2837 sigemptyset (&sigfd_set);
2328 sigprocmask (SIG_SETMASK, &prev, 0); 2838
2329#endif 2839 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2840 ev_set_priority (&sigfd_w, EV_MAXPRI);
2841 ev_io_start (EV_A_ &sigfd_w);
2842 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2843 }
2330 } 2844 }
2845
2846 if (sigfd >= 0)
2847 {
2848 /* TODO: check .head */
2849 sigaddset (&sigfd_set, w->signum);
2850 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2851
2852 signalfd (sigfd, &sigfd_set, 0);
2853 }
2854#endif
2331 2855
2332 ev_start (EV_A_ (W)w, 1); 2856 ev_start (EV_A_ (W)w, 1);
2333 wlist_add (&signals [w->signum - 1].head, (WL)w); 2857 wlist_add (&signals [w->signum - 1].head, (WL)w);
2334 2858
2335 if (!((WL)w)->next) 2859 if (!((WL)w)->next)
2860# if EV_USE_SIGNALFD
2861 if (sigfd < 0) /*TODO*/
2862# endif
2336 { 2863 {
2337#if _WIN32 2864# ifdef _WIN32
2865 evpipe_init (EV_A);
2866
2338 signal (w->signum, ev_sighandler); 2867 signal (w->signum, ev_sighandler);
2339#else 2868# else
2340 struct sigaction sa; 2869 struct sigaction sa;
2870
2871 evpipe_init (EV_A);
2872
2341 sa.sa_handler = ev_sighandler; 2873 sa.sa_handler = ev_sighandler;
2342 sigfillset (&sa.sa_mask); 2874 sigfillset (&sa.sa_mask);
2343 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2875 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2344 sigaction (w->signum, &sa, 0); 2876 sigaction (w->signum, &sa, 0);
2877
2878 sigemptyset (&sa.sa_mask);
2879 sigaddset (&sa.sa_mask, w->signum);
2880 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2345#endif 2881#endif
2346 } 2882 }
2347 2883
2348 EV_FREQUENT_CHECK; 2884 EV_FREQUENT_CHECK;
2349} 2885}
2350 2886
2351void noinline 2887void noinline
… …
2359 2895
2360 wlist_del (&signals [w->signum - 1].head, (WL)w); 2896 wlist_del (&signals [w->signum - 1].head, (WL)w);
2361 ev_stop (EV_A_ (W)w); 2897 ev_stop (EV_A_ (W)w);
2362 2898
2363 if (!signals [w->signum - 1].head) 2899 if (!signals [w->signum - 1].head)
2900 {
2901#if EV_MULTIPLICITY
2902 signals [w->signum - 1].loop = 0; /* unattach from signal */
2903#endif
2904#if EV_USE_SIGNALFD
2905 if (sigfd >= 0)
2906 {
2907 sigset_t ss;
2908
2909 sigemptyset (&ss);
2910 sigaddset (&ss, w->signum);
2911 sigdelset (&sigfd_set, w->signum);
2912
2913 signalfd (sigfd, &sigfd_set, 0);
2914 sigprocmask (SIG_UNBLOCK, &ss, 0);
2915 }
2916 else
2917#endif
2364 signal (w->signum, SIG_DFL); 2918 signal (w->signum, SIG_DFL);
2919 }
2365 2920
2366 EV_FREQUENT_CHECK; 2921 EV_FREQUENT_CHECK;
2367} 2922}
2923
2924#endif
2925
2926#if EV_CHILD_ENABLE
2368 2927
2369void 2928void
2370ev_child_start (EV_P_ ev_child *w) 2929ev_child_start (EV_P_ ev_child *w)
2371{ 2930{
2372#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
2373 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2932 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2374#endif 2933#endif
2375 if (expect_false (ev_is_active (w))) 2934 if (expect_false (ev_is_active (w)))
2376 return; 2935 return;
2377 2936
2378 EV_FREQUENT_CHECK; 2937 EV_FREQUENT_CHECK;
2379 2938
2380 ev_start (EV_A_ (W)w, 1); 2939 ev_start (EV_A_ (W)w, 1);
2381 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2940 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2382 2941
2383 EV_FREQUENT_CHECK; 2942 EV_FREQUENT_CHECK;
2384} 2943}
2385 2944
2386void 2945void
… …
2390 if (expect_false (!ev_is_active (w))) 2949 if (expect_false (!ev_is_active (w)))
2391 return; 2950 return;
2392 2951
2393 EV_FREQUENT_CHECK; 2952 EV_FREQUENT_CHECK;
2394 2953
2395 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2954 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2396 ev_stop (EV_A_ (W)w); 2955 ev_stop (EV_A_ (W)w);
2397 2956
2398 EV_FREQUENT_CHECK; 2957 EV_FREQUENT_CHECK;
2399} 2958}
2959
2960#endif
2400 2961
2401#if EV_STAT_ENABLE 2962#if EV_STAT_ENABLE
2402 2963
2403# ifdef _WIN32 2964# ifdef _WIN32
2404# undef lstat 2965# undef lstat
2405# define lstat(a,b) _stati64 (a,b) 2966# define lstat(a,b) _stati64 (a,b)
2406# endif 2967# endif
2407 2968
2408#define DEF_STAT_INTERVAL 5.0074891 2969#define DEF_STAT_INTERVAL 5.0074891
2970#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2409#define MIN_STAT_INTERVAL 0.1074891 2971#define MIN_STAT_INTERVAL 0.1074891
2410 2972
2411static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2973static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2412 2974
2413#if EV_USE_INOTIFY 2975#if EV_USE_INOTIFY
2414# define EV_INOTIFY_BUFSIZE 8192 2976
2977/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2978# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2415 2979
2416static void noinline 2980static void noinline
2417infy_add (EV_P_ ev_stat *w) 2981infy_add (EV_P_ ev_stat *w)
2418{ 2982{
2419 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2983 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2420 2984
2421 if (w->wd < 0) 2985 if (w->wd >= 0)
2986 {
2987 struct statfs sfs;
2988
2989 /* now local changes will be tracked by inotify, but remote changes won't */
2990 /* unless the filesystem is known to be local, we therefore still poll */
2991 /* also do poll on <2.6.25, but with normal frequency */
2992
2993 if (!fs_2625)
2994 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2995 else if (!statfs (w->path, &sfs)
2996 && (sfs.f_type == 0x1373 /* devfs */
2997 || sfs.f_type == 0xEF53 /* ext2/3 */
2998 || sfs.f_type == 0x3153464a /* jfs */
2999 || sfs.f_type == 0x52654973 /* reiser3 */
3000 || sfs.f_type == 0x01021994 /* tempfs */
3001 || sfs.f_type == 0x58465342 /* xfs */))
3002 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3003 else
3004 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2422 { 3005 }
2423 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3006 else
3007 {
3008 /* can't use inotify, continue to stat */
3009 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2424 3010
2425 /* monitor some parent directory for speedup hints */ 3011 /* if path is not there, monitor some parent directory for speedup hints */
2426 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3012 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2427 /* but an efficiency issue only */ 3013 /* but an efficiency issue only */
2428 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3014 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2429 { 3015 {
2430 char path [4096]; 3016 char path [4096];
2431 strcpy (path, w->path); 3017 strcpy (path, w->path);
… …
2435 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3021 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2436 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3022 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2437 3023
2438 char *pend = strrchr (path, '/'); 3024 char *pend = strrchr (path, '/');
2439 3025
2440 if (!pend) 3026 if (!pend || pend == path)
2441 break; /* whoops, no '/', complain to your admin */ 3027 break;
2442 3028
2443 *pend = 0; 3029 *pend = 0;
2444 w->wd = inotify_add_watch (fs_fd, path, mask); 3030 w->wd = inotify_add_watch (fs_fd, path, mask);
2445 } 3031 }
2446 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3032 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2447 } 3033 }
2448 } 3034 }
2449 else
2450 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2451 3035
2452 if (w->wd >= 0) 3036 if (w->wd >= 0)
2453 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3037 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3038
3039 /* now re-arm timer, if required */
3040 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3041 ev_timer_again (EV_A_ &w->timer);
3042 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2454} 3043}
2455 3044
2456static void noinline 3045static void noinline
2457infy_del (EV_P_ ev_stat *w) 3046infy_del (EV_P_ ev_stat *w)
2458{ 3047{
… …
2461 3050
2462 if (wd < 0) 3051 if (wd < 0)
2463 return; 3052 return;
2464 3053
2465 w->wd = -2; 3054 w->wd = -2;
2466 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3055 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2467 wlist_del (&fs_hash [slot].head, (WL)w); 3056 wlist_del (&fs_hash [slot].head, (WL)w);
2468 3057
2469 /* remove this watcher, if others are watching it, they will rearm */ 3058 /* remove this watcher, if others are watching it, they will rearm */
2470 inotify_rm_watch (fs_fd, wd); 3059 inotify_rm_watch (fs_fd, wd);
2471} 3060}
2472 3061
2473static void noinline 3062static void noinline
2474infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3063infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2475{ 3064{
2476 if (slot < 0) 3065 if (slot < 0)
2477 /* overflow, need to check for all hahs slots */ 3066 /* overflow, need to check for all hash slots */
2478 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3067 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2479 infy_wd (EV_A_ slot, wd, ev); 3068 infy_wd (EV_A_ slot, wd, ev);
2480 else 3069 else
2481 { 3070 {
2482 WL w_; 3071 WL w_;
2483 3072
2484 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3073 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2485 { 3074 {
2486 ev_stat *w = (ev_stat *)w_; 3075 ev_stat *w = (ev_stat *)w_;
2487 w_ = w_->next; /* lets us remove this watcher and all before it */ 3076 w_ = w_->next; /* lets us remove this watcher and all before it */
2488 3077
2489 if (w->wd == wd || wd == -1) 3078 if (w->wd == wd || wd == -1)
2490 { 3079 {
2491 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3080 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2492 { 3081 {
3082 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2493 w->wd = -1; 3083 w->wd = -1;
2494 infy_add (EV_A_ w); /* re-add, no matter what */ 3084 infy_add (EV_A_ w); /* re-add, no matter what */
2495 } 3085 }
2496 3086
2497 stat_timer_cb (EV_A_ &w->timer, 0); 3087 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2502 3092
2503static void 3093static void
2504infy_cb (EV_P_ ev_io *w, int revents) 3094infy_cb (EV_P_ ev_io *w, int revents)
2505{ 3095{
2506 char buf [EV_INOTIFY_BUFSIZE]; 3096 char buf [EV_INOTIFY_BUFSIZE];
2507 struct inotify_event *ev = (struct inotify_event *)buf;
2508 int ofs; 3097 int ofs;
2509 int len = read (fs_fd, buf, sizeof (buf)); 3098 int len = read (fs_fd, buf, sizeof (buf));
2510 3099
2511 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3100 for (ofs = 0; ofs < len; )
3101 {
3102 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2512 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3103 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3104 ofs += sizeof (struct inotify_event) + ev->len;
3105 }
2513} 3106}
2514 3107
2515void inline_size 3108inline_size void
3109ev_check_2625 (EV_P)
3110{
3111 /* kernels < 2.6.25 are borked
3112 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3113 */
3114 if (ev_linux_version () < 0x020619)
3115 return;
3116
3117 fs_2625 = 1;
3118}
3119
3120inline_size int
3121infy_newfd (void)
3122{
3123#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3124 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3125 if (fd >= 0)
3126 return fd;
3127#endif
3128 return inotify_init ();
3129}
3130
3131inline_size void
2516infy_init (EV_P) 3132infy_init (EV_P)
2517{ 3133{
2518 if (fs_fd != -2) 3134 if (fs_fd != -2)
2519 return; 3135 return;
2520 3136
3137 fs_fd = -1;
3138
3139 ev_check_2625 (EV_A);
3140
2521 fs_fd = inotify_init (); 3141 fs_fd = infy_newfd ();
2522 3142
2523 if (fs_fd >= 0) 3143 if (fs_fd >= 0)
2524 { 3144 {
3145 fd_intern (fs_fd);
2525 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3146 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2526 ev_set_priority (&fs_w, EV_MAXPRI); 3147 ev_set_priority (&fs_w, EV_MAXPRI);
2527 ev_io_start (EV_A_ &fs_w); 3148 ev_io_start (EV_A_ &fs_w);
3149 ev_unref (EV_A);
2528 } 3150 }
2529} 3151}
2530 3152
2531void inline_size 3153inline_size void
2532infy_fork (EV_P) 3154infy_fork (EV_P)
2533{ 3155{
2534 int slot; 3156 int slot;
2535 3157
2536 if (fs_fd < 0) 3158 if (fs_fd < 0)
2537 return; 3159 return;
2538 3160
3161 ev_ref (EV_A);
3162 ev_io_stop (EV_A_ &fs_w);
2539 close (fs_fd); 3163 close (fs_fd);
2540 fs_fd = inotify_init (); 3164 fs_fd = infy_newfd ();
2541 3165
3166 if (fs_fd >= 0)
3167 {
3168 fd_intern (fs_fd);
3169 ev_io_set (&fs_w, fs_fd, EV_READ);
3170 ev_io_start (EV_A_ &fs_w);
3171 ev_unref (EV_A);
3172 }
3173
2542 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3174 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2543 { 3175 {
2544 WL w_ = fs_hash [slot].head; 3176 WL w_ = fs_hash [slot].head;
2545 fs_hash [slot].head = 0; 3177 fs_hash [slot].head = 0;
2546 3178
2547 while (w_) 3179 while (w_)
… …
2552 w->wd = -1; 3184 w->wd = -1;
2553 3185
2554 if (fs_fd >= 0) 3186 if (fs_fd >= 0)
2555 infy_add (EV_A_ w); /* re-add, no matter what */ 3187 infy_add (EV_A_ w); /* re-add, no matter what */
2556 else 3188 else
3189 {
3190 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3191 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2557 ev_timer_start (EV_A_ &w->timer); 3192 ev_timer_again (EV_A_ &w->timer);
3193 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3194 }
2558 } 3195 }
2559
2560 } 3196 }
2561} 3197}
2562 3198
3199#endif
3200
3201#ifdef _WIN32
3202# define EV_LSTAT(p,b) _stati64 (p, b)
3203#else
3204# define EV_LSTAT(p,b) lstat (p, b)
2563#endif 3205#endif
2564 3206
2565void 3207void
2566ev_stat_stat (EV_P_ ev_stat *w) 3208ev_stat_stat (EV_P_ ev_stat *w)
2567{ 3209{
… …
2574static void noinline 3216static void noinline
2575stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3217stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2576{ 3218{
2577 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3219 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2578 3220
2579 /* we copy this here each the time so that */ 3221 ev_statdata prev = w->attr;
2580 /* prev has the old value when the callback gets invoked */
2581 w->prev = w->attr;
2582 ev_stat_stat (EV_A_ w); 3222 ev_stat_stat (EV_A_ w);
2583 3223
2584 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3224 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2585 if ( 3225 if (
2586 w->prev.st_dev != w->attr.st_dev 3226 prev.st_dev != w->attr.st_dev
2587 || w->prev.st_ino != w->attr.st_ino 3227 || prev.st_ino != w->attr.st_ino
2588 || w->prev.st_mode != w->attr.st_mode 3228 || prev.st_mode != w->attr.st_mode
2589 || w->prev.st_nlink != w->attr.st_nlink 3229 || prev.st_nlink != w->attr.st_nlink
2590 || w->prev.st_uid != w->attr.st_uid 3230 || prev.st_uid != w->attr.st_uid
2591 || w->prev.st_gid != w->attr.st_gid 3231 || prev.st_gid != w->attr.st_gid
2592 || w->prev.st_rdev != w->attr.st_rdev 3232 || prev.st_rdev != w->attr.st_rdev
2593 || w->prev.st_size != w->attr.st_size 3233 || prev.st_size != w->attr.st_size
2594 || w->prev.st_atime != w->attr.st_atime 3234 || prev.st_atime != w->attr.st_atime
2595 || w->prev.st_mtime != w->attr.st_mtime 3235 || prev.st_mtime != w->attr.st_mtime
2596 || w->prev.st_ctime != w->attr.st_ctime 3236 || prev.st_ctime != w->attr.st_ctime
2597 ) { 3237 ) {
3238 /* we only update w->prev on actual differences */
3239 /* in case we test more often than invoke the callback, */
3240 /* to ensure that prev is always different to attr */
3241 w->prev = prev;
3242
2598 #if EV_USE_INOTIFY 3243 #if EV_USE_INOTIFY
3244 if (fs_fd >= 0)
3245 {
2599 infy_del (EV_A_ w); 3246 infy_del (EV_A_ w);
2600 infy_add (EV_A_ w); 3247 infy_add (EV_A_ w);
2601 ev_stat_stat (EV_A_ w); /* avoid race... */ 3248 ev_stat_stat (EV_A_ w); /* avoid race... */
3249 }
2602 #endif 3250 #endif
2603 3251
2604 ev_feed_event (EV_A_ w, EV_STAT); 3252 ev_feed_event (EV_A_ w, EV_STAT);
2605 } 3253 }
2606} 3254}
… …
2609ev_stat_start (EV_P_ ev_stat *w) 3257ev_stat_start (EV_P_ ev_stat *w)
2610{ 3258{
2611 if (expect_false (ev_is_active (w))) 3259 if (expect_false (ev_is_active (w)))
2612 return; 3260 return;
2613 3261
2614 /* since we use memcmp, we need to clear any padding data etc. */
2615 memset (&w->prev, 0, sizeof (ev_statdata));
2616 memset (&w->attr, 0, sizeof (ev_statdata));
2617
2618 ev_stat_stat (EV_A_ w); 3262 ev_stat_stat (EV_A_ w);
2619 3263
3264 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2620 if (w->interval < MIN_STAT_INTERVAL) 3265 w->interval = MIN_STAT_INTERVAL;
2621 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2622 3266
2623 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3267 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2624 ev_set_priority (&w->timer, ev_priority (w)); 3268 ev_set_priority (&w->timer, ev_priority (w));
2625 3269
2626#if EV_USE_INOTIFY 3270#if EV_USE_INOTIFY
2627 infy_init (EV_A); 3271 infy_init (EV_A);
2628 3272
2629 if (fs_fd >= 0) 3273 if (fs_fd >= 0)
2630 infy_add (EV_A_ w); 3274 infy_add (EV_A_ w);
2631 else 3275 else
2632#endif 3276#endif
3277 {
2633 ev_timer_start (EV_A_ &w->timer); 3278 ev_timer_again (EV_A_ &w->timer);
3279 ev_unref (EV_A);
3280 }
2634 3281
2635 ev_start (EV_A_ (W)w, 1); 3282 ev_start (EV_A_ (W)w, 1);
2636 3283
2637 EV_FREQUENT_CHECK; 3284 EV_FREQUENT_CHECK;
2638} 3285}
… …
2647 EV_FREQUENT_CHECK; 3294 EV_FREQUENT_CHECK;
2648 3295
2649#if EV_USE_INOTIFY 3296#if EV_USE_INOTIFY
2650 infy_del (EV_A_ w); 3297 infy_del (EV_A_ w);
2651#endif 3298#endif
3299
3300 if (ev_is_active (&w->timer))
3301 {
3302 ev_ref (EV_A);
2652 ev_timer_stop (EV_A_ &w->timer); 3303 ev_timer_stop (EV_A_ &w->timer);
3304 }
2653 3305
2654 ev_stop (EV_A_ (W)w); 3306 ev_stop (EV_A_ (W)w);
2655 3307
2656 EV_FREQUENT_CHECK; 3308 EV_FREQUENT_CHECK;
2657} 3309}
… …
2702 3354
2703 EV_FREQUENT_CHECK; 3355 EV_FREQUENT_CHECK;
2704} 3356}
2705#endif 3357#endif
2706 3358
3359#if EV_PREPARE_ENABLE
2707void 3360void
2708ev_prepare_start (EV_P_ ev_prepare *w) 3361ev_prepare_start (EV_P_ ev_prepare *w)
2709{ 3362{
2710 if (expect_false (ev_is_active (w))) 3363 if (expect_false (ev_is_active (w)))
2711 return; 3364 return;
… …
2737 3390
2738 ev_stop (EV_A_ (W)w); 3391 ev_stop (EV_A_ (W)w);
2739 3392
2740 EV_FREQUENT_CHECK; 3393 EV_FREQUENT_CHECK;
2741} 3394}
3395#endif
2742 3396
3397#if EV_CHECK_ENABLE
2743void 3398void
2744ev_check_start (EV_P_ ev_check *w) 3399ev_check_start (EV_P_ ev_check *w)
2745{ 3400{
2746 if (expect_false (ev_is_active (w))) 3401 if (expect_false (ev_is_active (w)))
2747 return; 3402 return;
… …
2773 3428
2774 ev_stop (EV_A_ (W)w); 3429 ev_stop (EV_A_ (W)w);
2775 3430
2776 EV_FREQUENT_CHECK; 3431 EV_FREQUENT_CHECK;
2777} 3432}
3433#endif
2778 3434
2779#if EV_EMBED_ENABLE 3435#if EV_EMBED_ENABLE
2780void noinline 3436void noinline
2781ev_embed_sweep (EV_P_ ev_embed *w) 3437ev_embed_sweep (EV_P_ ev_embed *w)
2782{ 3438{
2783 ev_loop (w->other, EVLOOP_NONBLOCK); 3439 ev_run (w->other, EVRUN_NOWAIT);
2784} 3440}
2785 3441
2786static void 3442static void
2787embed_io_cb (EV_P_ ev_io *io, int revents) 3443embed_io_cb (EV_P_ ev_io *io, int revents)
2788{ 3444{
2789 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3445 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2790 3446
2791 if (ev_cb (w)) 3447 if (ev_cb (w))
2792 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3448 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2793 else 3449 else
2794 ev_loop (w->other, EVLOOP_NONBLOCK); 3450 ev_run (w->other, EVRUN_NOWAIT);
2795} 3451}
2796 3452
2797static void 3453static void
2798embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3454embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2799{ 3455{
2800 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3456 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2801 3457
2802 { 3458 {
2803 struct ev_loop *loop = w->other; 3459 EV_P = w->other;
2804 3460
2805 while (fdchangecnt) 3461 while (fdchangecnt)
2806 { 3462 {
2807 fd_reify (EV_A); 3463 fd_reify (EV_A);
2808 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3464 ev_run (EV_A_ EVRUN_NOWAIT);
2809 } 3465 }
2810 } 3466 }
3467}
3468
3469static void
3470embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3471{
3472 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3473
3474 ev_embed_stop (EV_A_ w);
3475
3476 {
3477 EV_P = w->other;
3478
3479 ev_loop_fork (EV_A);
3480 ev_run (EV_A_ EVRUN_NOWAIT);
3481 }
3482
3483 ev_embed_start (EV_A_ w);
2811} 3484}
2812 3485
2813#if 0 3486#if 0
2814static void 3487static void
2815embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3488embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2823{ 3496{
2824 if (expect_false (ev_is_active (w))) 3497 if (expect_false (ev_is_active (w)))
2825 return; 3498 return;
2826 3499
2827 { 3500 {
2828 struct ev_loop *loop = w->other; 3501 EV_P = w->other;
2829 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3502 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2830 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3503 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2831 } 3504 }
2832 3505
2833 EV_FREQUENT_CHECK; 3506 EV_FREQUENT_CHECK;
2834 3507
… …
2837 3510
2838 ev_prepare_init (&w->prepare, embed_prepare_cb); 3511 ev_prepare_init (&w->prepare, embed_prepare_cb);
2839 ev_set_priority (&w->prepare, EV_MINPRI); 3512 ev_set_priority (&w->prepare, EV_MINPRI);
2840 ev_prepare_start (EV_A_ &w->prepare); 3513 ev_prepare_start (EV_A_ &w->prepare);
2841 3514
3515 ev_fork_init (&w->fork, embed_fork_cb);
3516 ev_fork_start (EV_A_ &w->fork);
3517
2842 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3518 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2843 3519
2844 ev_start (EV_A_ (W)w, 1); 3520 ev_start (EV_A_ (W)w, 1);
2845 3521
2846 EV_FREQUENT_CHECK; 3522 EV_FREQUENT_CHECK;
… …
2853 if (expect_false (!ev_is_active (w))) 3529 if (expect_false (!ev_is_active (w)))
2854 return; 3530 return;
2855 3531
2856 EV_FREQUENT_CHECK; 3532 EV_FREQUENT_CHECK;
2857 3533
2858 ev_io_stop (EV_A_ &w->io); 3534 ev_io_stop (EV_A_ &w->io);
2859 ev_prepare_stop (EV_A_ &w->prepare); 3535 ev_prepare_stop (EV_A_ &w->prepare);
3536 ev_fork_stop (EV_A_ &w->fork);
2860 3537
2861 ev_stop (EV_A_ (W)w); 3538 ev_stop (EV_A_ (W)w);
2862 3539
2863 EV_FREQUENT_CHECK; 3540 EV_FREQUENT_CHECK;
2864} 3541}
… …
2907ev_async_start (EV_P_ ev_async *w) 3584ev_async_start (EV_P_ ev_async *w)
2908{ 3585{
2909 if (expect_false (ev_is_active (w))) 3586 if (expect_false (ev_is_active (w)))
2910 return; 3587 return;
2911 3588
3589 w->sent = 0;
3590
2912 evpipe_init (EV_A); 3591 evpipe_init (EV_A);
2913 3592
2914 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
2915 3594
2916 ev_start (EV_A_ (W)w, ++asynccnt); 3595 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2943 3622
2944void 3623void
2945ev_async_send (EV_P_ ev_async *w) 3624ev_async_send (EV_P_ ev_async *w)
2946{ 3625{
2947 w->sent = 1; 3626 w->sent = 1;
2948 evpipe_write (EV_A_ &gotasync); 3627 evpipe_write (EV_A_ &async_pending);
2949} 3628}
2950#endif 3629#endif
2951 3630
2952/*****************************************************************************/ 3631/*****************************************************************************/
2953 3632
… …
2963once_cb (EV_P_ struct ev_once *once, int revents) 3642once_cb (EV_P_ struct ev_once *once, int revents)
2964{ 3643{
2965 void (*cb)(int revents, void *arg) = once->cb; 3644 void (*cb)(int revents, void *arg) = once->cb;
2966 void *arg = once->arg; 3645 void *arg = once->arg;
2967 3646
2968 ev_io_stop (EV_A_ &once->io); 3647 ev_io_stop (EV_A_ &once->io);
2969 ev_timer_stop (EV_A_ &once->to); 3648 ev_timer_stop (EV_A_ &once->to);
2970 ev_free (once); 3649 ev_free (once);
2971 3650
2972 cb (revents, arg); 3651 cb (revents, arg);
2973} 3652}
2974 3653
2975static void 3654static void
2976once_cb_io (EV_P_ ev_io *w, int revents) 3655once_cb_io (EV_P_ ev_io *w, int revents)
2977{ 3656{
2978 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3657 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3658
3659 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2979} 3660}
2980 3661
2981static void 3662static void
2982once_cb_to (EV_P_ ev_timer *w, int revents) 3663once_cb_to (EV_P_ ev_timer *w, int revents)
2983{ 3664{
2984 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3665 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3666
3667 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2985} 3668}
2986 3669
2987void 3670void
2988ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3671ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2989{ 3672{
2990 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3673 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2991 3674
2992 if (expect_false (!once)) 3675 if (expect_false (!once))
2993 { 3676 {
2994 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3677 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2995 return; 3678 return;
2996 } 3679 }
2997 3680
2998 once->cb = cb; 3681 once->cb = cb;
2999 once->arg = arg; 3682 once->arg = arg;
… …
3011 ev_timer_set (&once->to, timeout, 0.); 3694 ev_timer_set (&once->to, timeout, 0.);
3012 ev_timer_start (EV_A_ &once->to); 3695 ev_timer_start (EV_A_ &once->to);
3013 } 3696 }
3014} 3697}
3015 3698
3699/*****************************************************************************/
3700
3701#if EV_WALK_ENABLE
3702void
3703ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3704{
3705 int i, j;
3706 ev_watcher_list *wl, *wn;
3707
3708 if (types & (EV_IO | EV_EMBED))
3709 for (i = 0; i < anfdmax; ++i)
3710 for (wl = anfds [i].head; wl; )
3711 {
3712 wn = wl->next;
3713
3714#if EV_EMBED_ENABLE
3715 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3716 {
3717 if (types & EV_EMBED)
3718 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3719 }
3720 else
3721#endif
3722#if EV_USE_INOTIFY
3723 if (ev_cb ((ev_io *)wl) == infy_cb)
3724 ;
3725 else
3726#endif
3727 if ((ev_io *)wl != &pipe_w)
3728 if (types & EV_IO)
3729 cb (EV_A_ EV_IO, wl);
3730
3731 wl = wn;
3732 }
3733
3734 if (types & (EV_TIMER | EV_STAT))
3735 for (i = timercnt + HEAP0; i-- > HEAP0; )
3736#if EV_STAT_ENABLE
3737 /*TODO: timer is not always active*/
3738 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3739 {
3740 if (types & EV_STAT)
3741 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3742 }
3743 else
3744#endif
3745 if (types & EV_TIMER)
3746 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3747
3748#if EV_PERIODIC_ENABLE
3749 if (types & EV_PERIODIC)
3750 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3751 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3752#endif
3753
3754#if EV_IDLE_ENABLE
3755 if (types & EV_IDLE)
3756 for (j = NUMPRI; i--; )
3757 for (i = idlecnt [j]; i--; )
3758 cb (EV_A_ EV_IDLE, idles [j][i]);
3759#endif
3760
3761#if EV_FORK_ENABLE
3762 if (types & EV_FORK)
3763 for (i = forkcnt; i--; )
3764 if (ev_cb (forks [i]) != embed_fork_cb)
3765 cb (EV_A_ EV_FORK, forks [i]);
3766#endif
3767
3768#if EV_ASYNC_ENABLE
3769 if (types & EV_ASYNC)
3770 for (i = asynccnt; i--; )
3771 cb (EV_A_ EV_ASYNC, asyncs [i]);
3772#endif
3773
3774#if EV_PREPARE_ENABLE
3775 if (types & EV_PREPARE)
3776 for (i = preparecnt; i--; )
3777# if EV_EMBED_ENABLE
3778 if (ev_cb (prepares [i]) != embed_prepare_cb)
3779# endif
3780 cb (EV_A_ EV_PREPARE, prepares [i]);
3781#endif
3782
3783#if EV_CHECK_ENABLE
3784 if (types & EV_CHECK)
3785 for (i = checkcnt; i--; )
3786 cb (EV_A_ EV_CHECK, checks [i]);
3787#endif
3788
3789#if EV_SIGNAL_ENABLE
3790 if (types & EV_SIGNAL)
3791 for (i = 0; i < EV_NSIG - 1; ++i)
3792 for (wl = signals [i].head; wl; )
3793 {
3794 wn = wl->next;
3795 cb (EV_A_ EV_SIGNAL, wl);
3796 wl = wn;
3797 }
3798#endif
3799
3800#if EV_CHILD_ENABLE
3801 if (types & EV_CHILD)
3802 for (i = (EV_PID_HASHSIZE); i--; )
3803 for (wl = childs [i]; wl; )
3804 {
3805 wn = wl->next;
3806 cb (EV_A_ EV_CHILD, wl);
3807 wl = wn;
3808 }
3809#endif
3810/* EV_STAT 0x00001000 /* stat data changed */
3811/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3812}
3813#endif
3814
3016#if EV_MULTIPLICITY 3815#if EV_MULTIPLICITY
3017 #include "ev_wrap.h" 3816 #include "ev_wrap.h"
3018#endif 3817#endif
3019 3818
3020#ifdef __cplusplus 3819EV_CPP(})
3021}
3022#endif
3023 3820

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