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

Comparing libev/ev.c (file contents):
Revision 1.244 by root, Tue May 20 23:49:41 2008 UTC vs.
Revision 1.369 by root, Sun Jan 23 18:53:06 2011 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) 2007,2008,2009,2010,2011 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
130# endif 148# endif
131 149
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
157# endif
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
237# endif 314# endif
238#endif 315#endif
239 316
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
322# endif
323#endif
324
325#if 0 /* debugging */
326# define EV_VERIFY 3
327# define EV_USE_4HEAP 1
328# define EV_HEAP_CACHE_AT 1
329#endif
330
331#ifndef EV_VERIFY
332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
333#endif
334
240#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
241# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
242#endif 337#endif
243 338
244#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
245# 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
246#endif 355#endif
247 356
248/* 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
249 364
250#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
251# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
252# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
253#endif 368#endif
… …
267# include <sys/select.h> 382# include <sys/select.h>
268# endif 383# endif
269#endif 384#endif
270 385
271#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/statfs.h>
272# 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
273#endif 394#endif
274 395
275#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
276# include <winsock.h> 397# include <winsock.h>
277#endif 398#endif
278 399
279#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
280/* 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 */
281# include <stdint.h> 402# include <stdint.h>
282# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
283extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
284# endif 405# endif
285int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
286# ifdef __cplusplus 407# ifdef O_CLOEXEC
287} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
288# 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};
289#endif 436#endif
290 437
291/**/ 438/**/
439
440#if EV_VERIFY >= 3
441# define EV_FREQUENT_CHECK ev_verify (EV_A)
442#else
443# define EV_FREQUENT_CHECK do { } while (0)
444#endif
292 445
293/* 446/*
294 * This is used to avoid floating point rounding problems. 447 * This is used to avoid floating point rounding problems.
295 * It is added to ev_rt_now when scheduling periodics 448 * It is added to ev_rt_now when scheduling periodics
296 * to ensure progress, time-wise, even when rounding 449 * to ensure progress, time-wise, even when rounding
… …
300 */ 453 */
301#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
302 455
303#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) */
304#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) */
305/*#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)
306 461
307#if __GNUC__ >= 4 462#if __GNUC__ >= 4
308# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
309# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
310#else 465#else
… …
317 472
318#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
319#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
320#define inline_size static inline 475#define inline_size static inline
321 476
322#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
323# 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)
324#else 487#else
325# define inline_speed static inline
326#endif
327
328#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
329#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
330 490
331#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
332#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
333 493
334typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
336typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
337 497
338#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
339#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
340 500
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
341#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
342/* sig_atomic_t is used to avoid per-thread variables or locking but still */
343/* giving it a reasonably high chance of working on typical architetcures */
344static 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)
345#endif 519#endif
346 520
347#ifdef _WIN32 521#ifdef _WIN32
348# include "ev_win32.c" 522# include "ev_win32.c"
349#endif 523#endif
350 524
351/*****************************************************************************/ 525/*****************************************************************************/
352 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
576
353static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
354 578
355void 579void
356ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
357{ 581{
358 syserr_cb = cb; 582 syserr_cb = cb;
359} 583}
360 584
361static void noinline 585static void noinline
362syserr (const char *msg) 586ev_syserr (const char *msg)
363{ 587{
364 if (!msg) 588 if (!msg)
365 msg = "(libev) system error"; 589 msg = "(libev) system error";
366 590
367 if (syserr_cb) 591 if (syserr_cb)
368 syserr_cb (msg); 592 syserr_cb (msg);
369 else 593 else
370 { 594 {
595#if EV_AVOID_STDIO
596 ev_printerr (msg);
597 ev_printerr (": ");
598 ev_printerr (strerror (errno));
599 ev_printerr ("\n");
600#else
371 perror (msg); 601 perror (msg);
602#endif
372 abort (); 603 abort ();
373 } 604 }
374} 605}
375 606
376static void * 607static void *
377ev_realloc_emul (void *ptr, long size) 608ev_realloc_emul (void *ptr, long size)
378{ 609{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
379 /* some systems, notably openbsd and darwin, fail to properly 613 /* some systems, notably openbsd and darwin, fail to properly
380 * implement realloc (x, 0) (as required by both ansi c-98 and 614 * implement realloc (x, 0) (as required by both ansi c-89 and
381 * the single unix specification, so work around them here. 615 * the single unix specification, so work around them here.
382 */ 616 */
383 617
384 if (size) 618 if (size)
385 return realloc (ptr, size); 619 return realloc (ptr, size);
386 620
387 free (ptr); 621 free (ptr);
388 return 0; 622 return 0;
623#endif
389} 624}
390 625
391static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
392 627
393void 628void
… …
401{ 636{
402 ptr = alloc (ptr, size); 637 ptr = alloc (ptr, size);
403 638
404 if (!ptr && size) 639 if (!ptr && size)
405 { 640 {
641#if EV_AVOID_STDIO
642 ev_printerr ("(libev) memory allocation failed, aborting.\n");
643#else
406 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 644 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
645#endif
407 abort (); 646 abort ();
408 } 647 }
409 648
410 return ptr; 649 return ptr;
411} 650}
… …
413#define ev_malloc(size) ev_realloc (0, (size)) 652#define ev_malloc(size) ev_realloc (0, (size))
414#define ev_free(ptr) ev_realloc ((ptr), 0) 653#define ev_free(ptr) ev_realloc ((ptr), 0)
415 654
416/*****************************************************************************/ 655/*****************************************************************************/
417 656
657/* set in reify when reification needed */
658#define EV_ANFD_REIFY 1
659
660/* file descriptor info structure */
418typedef struct 661typedef struct
419{ 662{
420 WL head; 663 WL head;
421 unsigned char events; 664 unsigned char events; /* the events watched for */
665 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
666 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
422 unsigned char reify; 667 unsigned char unused;
668#if EV_USE_EPOLL
669 unsigned int egen; /* generation counter to counter epoll bugs */
670#endif
423#if EV_SELECT_IS_WINSOCKET 671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
424 SOCKET handle; 672 SOCKET handle;
425#endif 673#endif
674#if EV_USE_IOCP
675 OVERLAPPED or, ow;
676#endif
426} ANFD; 677} ANFD;
427 678
679/* stores the pending event set for a given watcher */
428typedef struct 680typedef struct
429{ 681{
430 W w; 682 W w;
431 int events; 683 int events; /* the pending event set for the given watcher */
432} ANPENDING; 684} ANPENDING;
433 685
434#if EV_USE_INOTIFY 686#if EV_USE_INOTIFY
435/* hash table entry per inotify-id */ 687/* hash table entry per inotify-id */
436typedef struct 688typedef struct
… …
439} ANFS; 691} ANFS;
440#endif 692#endif
441 693
442/* Heap Entry */ 694/* Heap Entry */
443#if EV_HEAP_CACHE_AT 695#if EV_HEAP_CACHE_AT
696 /* a heap element */
444 typedef struct { 697 typedef struct {
445 ev_tstamp at; 698 ev_tstamp at;
446 WT w; 699 WT w;
447 } ANHE; 700 } ANHE;
448 701
449 #define ANHE_w(he) (he).w /* access watcher, read-write */ 702 #define ANHE_w(he) (he).w /* access watcher, read-write */
450 #define ANHE_at(he) (he).at /* access cached at, read-only */ 703 #define ANHE_at(he) (he).at /* access cached at, read-only */
451 #define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */ 704 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452#else 705#else
706 /* a heap element */
453 typedef WT ANHE; 707 typedef WT ANHE;
454 708
455 #define ANHE_w(he) (he) 709 #define ANHE_w(he) (he)
456 #define ANHE_at(he) (he)->at 710 #define ANHE_at(he) (he)->at
457 #define ANHE_at_set(he) 711 #define ANHE_at_cache(he)
458#endif 712#endif
459 713
460#if EV_MULTIPLICITY 714#if EV_MULTIPLICITY
461 715
462 struct ev_loop 716 struct ev_loop
… …
481 735
482 static int ev_default_loop_ptr; 736 static int ev_default_loop_ptr;
483 737
484#endif 738#endif
485 739
740#if EV_FEATURE_API
741# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
742# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
743# define EV_INVOKE_PENDING invoke_cb (EV_A)
744#else
745# define EV_RELEASE_CB (void)0
746# define EV_ACQUIRE_CB (void)0
747# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
748#endif
749
750#define EVBREAK_RECURSE 0x80
751
486/*****************************************************************************/ 752/*****************************************************************************/
487 753
754#ifndef EV_HAVE_EV_TIME
488ev_tstamp 755ev_tstamp
489ev_time (void) 756ev_time (void)
490{ 757{
491#if EV_USE_REALTIME 758#if EV_USE_REALTIME
759 if (expect_true (have_realtime))
760 {
492 struct timespec ts; 761 struct timespec ts;
493 clock_gettime (CLOCK_REALTIME, &ts); 762 clock_gettime (CLOCK_REALTIME, &ts);
494 return ts.tv_sec + ts.tv_nsec * 1e-9; 763 return ts.tv_sec + ts.tv_nsec * 1e-9;
495#else 764 }
765#endif
766
496 struct timeval tv; 767 struct timeval tv;
497 gettimeofday (&tv, 0); 768 gettimeofday (&tv, 0);
498 return tv.tv_sec + tv.tv_usec * 1e-6; 769 return tv.tv_sec + tv.tv_usec * 1e-6;
499#endif
500} 770}
771#endif
501 772
502ev_tstamp inline_size 773inline_size ev_tstamp
503get_clock (void) 774get_clock (void)
504{ 775{
505#if EV_USE_MONOTONIC 776#if EV_USE_MONOTONIC
506 if (expect_true (have_monotonic)) 777 if (expect_true (have_monotonic))
507 { 778 {
… …
528 if (delay > 0.) 799 if (delay > 0.)
529 { 800 {
530#if EV_USE_NANOSLEEP 801#if EV_USE_NANOSLEEP
531 struct timespec ts; 802 struct timespec ts;
532 803
533 ts.tv_sec = (time_t)delay; 804 EV_TS_SET (ts, delay);
534 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
535
536 nanosleep (&ts, 0); 805 nanosleep (&ts, 0);
537#elif defined(_WIN32) 806#elif defined(_WIN32)
538 Sleep ((unsigned long)(delay * 1e3)); 807 Sleep ((unsigned long)(delay * 1e3));
539#else 808#else
540 struct timeval tv; 809 struct timeval tv;
541 810
542 tv.tv_sec = (time_t)delay; 811 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
543 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 812 /* something not guaranteed by newer posix versions, but guaranteed */
544 813 /* by older ones */
814 EV_TV_SET (tv, delay);
545 select (0, 0, 0, 0, &tv); 815 select (0, 0, 0, 0, &tv);
546#endif 816#endif
547 } 817 }
548} 818}
549 819
820inline_speed int
821ev_timeout_to_ms (ev_tstamp timeout)
822{
823 int ms = timeout * 1000. + .999999;
824
825 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
826}
827
550/*****************************************************************************/ 828/*****************************************************************************/
551 829
552#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 830#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
553 831
554int inline_size 832/* find a suitable new size for the given array, */
833/* hopefully by rounding to a nice-to-malloc size */
834inline_size int
555array_nextsize (int elem, int cur, int cnt) 835array_nextsize (int elem, int cur, int cnt)
556{ 836{
557 int ncur = cur + 1; 837 int ncur = cur + 1;
558 838
559 do 839 do
… …
576array_realloc (int elem, void *base, int *cur, int cnt) 856array_realloc (int elem, void *base, int *cur, int cnt)
577{ 857{
578 *cur = array_nextsize (elem, *cur, cnt); 858 *cur = array_nextsize (elem, *cur, cnt);
579 return ev_realloc (base, elem * *cur); 859 return ev_realloc (base, elem * *cur);
580} 860}
861
862#define array_init_zero(base,count) \
863 memset ((void *)(base), 0, sizeof (*(base)) * (count))
581 864
582#define array_needsize(type,base,cur,cnt,init) \ 865#define array_needsize(type,base,cur,cnt,init) \
583 if (expect_false ((cnt) > (cur))) \ 866 if (expect_false ((cnt) > (cur))) \
584 { \ 867 { \
585 int ocur_ = (cur); \ 868 int ocur_ = (cur); \
… …
597 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 880 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598 } 881 }
599#endif 882#endif
600 883
601#define array_free(stem, idx) \ 884#define array_free(stem, idx) \
602 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 885 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
603 886
604/*****************************************************************************/ 887/*****************************************************************************/
888
889/* dummy callback for pending events */
890static void noinline
891pendingcb (EV_P_ ev_prepare *w, int revents)
892{
893}
605 894
606void noinline 895void noinline
607ev_feed_event (EV_P_ void *w, int revents) 896ev_feed_event (EV_P_ void *w, int revents)
608{ 897{
609 W w_ = (W)w; 898 W w_ = (W)w;
… …
618 pendings [pri][w_->pending - 1].w = w_; 907 pendings [pri][w_->pending - 1].w = w_;
619 pendings [pri][w_->pending - 1].events = revents; 908 pendings [pri][w_->pending - 1].events = revents;
620 } 909 }
621} 910}
622 911
623void inline_speed 912inline_speed void
913feed_reverse (EV_P_ W w)
914{
915 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
916 rfeeds [rfeedcnt++] = w;
917}
918
919inline_size void
920feed_reverse_done (EV_P_ int revents)
921{
922 do
923 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
924 while (rfeedcnt);
925}
926
927inline_speed void
624queue_events (EV_P_ W *events, int eventcnt, int type) 928queue_events (EV_P_ W *events, int eventcnt, int type)
625{ 929{
626 int i; 930 int i;
627 931
628 for (i = 0; i < eventcnt; ++i) 932 for (i = 0; i < eventcnt; ++i)
629 ev_feed_event (EV_A_ events [i], type); 933 ev_feed_event (EV_A_ events [i], type);
630} 934}
631 935
632/*****************************************************************************/ 936/*****************************************************************************/
633 937
634void inline_size 938inline_speed void
635anfds_init (ANFD *base, int count)
636{
637 while (count--)
638 {
639 base->head = 0;
640 base->events = EV_NONE;
641 base->reify = 0;
642
643 ++base;
644 }
645}
646
647void inline_speed
648fd_event (EV_P_ int fd, int revents) 939fd_event_nocheck (EV_P_ int fd, int revents)
649{ 940{
650 ANFD *anfd = anfds + fd; 941 ANFD *anfd = anfds + fd;
651 ev_io *w; 942 ev_io *w;
652 943
653 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
657 if (ev) 948 if (ev)
658 ev_feed_event (EV_A_ (W)w, ev); 949 ev_feed_event (EV_A_ (W)w, ev);
659 } 950 }
660} 951}
661 952
953/* do not submit kernel events for fds that have reify set */
954/* because that means they changed while we were polling for new events */
955inline_speed void
956fd_event (EV_P_ int fd, int revents)
957{
958 ANFD *anfd = anfds + fd;
959
960 if (expect_true (!anfd->reify))
961 fd_event_nocheck (EV_A_ fd, revents);
962}
963
662void 964void
663ev_feed_fd_event (EV_P_ int fd, int revents) 965ev_feed_fd_event (EV_P_ int fd, int revents)
664{ 966{
665 if (fd >= 0 && fd < anfdmax) 967 if (fd >= 0 && fd < anfdmax)
666 fd_event (EV_A_ fd, revents); 968 fd_event_nocheck (EV_A_ fd, revents);
667} 969}
668 970
669void inline_size 971/* make sure the external fd watch events are in-sync */
972/* with the kernel/libev internal state */
973inline_size void
670fd_reify (EV_P) 974fd_reify (EV_P)
671{ 975{
672 int i; 976 int i;
673 977
674 for (i = 0; i < fdchangecnt; ++i) 978 for (i = 0; i < fdchangecnt; ++i)
675 { 979 {
676 int fd = fdchanges [i]; 980 int fd = fdchanges [i];
677 ANFD *anfd = anfds + fd; 981 ANFD *anfd = anfds + fd;
678 ev_io *w; 982 ev_io *w;
679 983
680 unsigned char events = 0; 984 unsigned char o_events = anfd->events;
985 unsigned char o_reify = anfd->reify;
681 986
682 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 987 anfd->reify = 0;
683 events |= (unsigned char)w->events;
684 988
685#if EV_SELECT_IS_WINSOCKET 989#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
686 if (events) 990 if (o_reify & EV__IOFDSET)
687 { 991 {
688 unsigned long argp; 992 unsigned long arg;
689 #ifdef EV_FD_TO_WIN32_HANDLE
690 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 993 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
691 #else
692 anfd->handle = _get_osfhandle (fd);
693 #endif
694 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 994 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
995 printf ("oi %d %x\n", fd, anfd->handle);//D
695 } 996 }
696#endif 997#endif
697 998
999 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
698 { 1000 {
699 unsigned char o_events = anfd->events;
700 unsigned char o_reify = anfd->reify;
701
702 anfd->reify = 0;
703 anfd->events = events; 1001 anfd->events = 0;
704 1002
705 if (o_events != events || o_reify & EV_IOFDSET) 1003 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1004 anfd->events |= (unsigned char)w->events;
1005
1006 if (o_events != anfd->events)
1007 o_reify = EV__IOFDSET; /* actually |= */
1008 }
1009
1010 if (o_reify & EV__IOFDSET)
706 backend_modify (EV_A_ fd, o_events, events); 1011 backend_modify (EV_A_ fd, o_events, anfd->events);
707 }
708 } 1012 }
709 1013
710 fdchangecnt = 0; 1014 fdchangecnt = 0;
711} 1015}
712 1016
713void inline_size 1017/* something about the given fd changed */
1018inline_size void
714fd_change (EV_P_ int fd, int flags) 1019fd_change (EV_P_ int fd, int flags)
715{ 1020{
716 unsigned char reify = anfds [fd].reify; 1021 unsigned char reify = anfds [fd].reify;
717 anfds [fd].reify |= flags; 1022 anfds [fd].reify |= flags;
718 1023
… …
722 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1027 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
723 fdchanges [fdchangecnt - 1] = fd; 1028 fdchanges [fdchangecnt - 1] = fd;
724 } 1029 }
725} 1030}
726 1031
727void inline_speed 1032/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1033inline_speed void
728fd_kill (EV_P_ int fd) 1034fd_kill (EV_P_ int fd)
729{ 1035{
730 ev_io *w; 1036 ev_io *w;
731 1037
732 while ((w = (ev_io *)anfds [fd].head)) 1038 while ((w = (ev_io *)anfds [fd].head))
… …
734 ev_io_stop (EV_A_ w); 1040 ev_io_stop (EV_A_ w);
735 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1041 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
736 } 1042 }
737} 1043}
738 1044
739int inline_size 1045/* check whether the given fd is actually valid, for error recovery */
1046inline_size int
740fd_valid (int fd) 1047fd_valid (int fd)
741{ 1048{
742#ifdef _WIN32 1049#ifdef _WIN32
743 return _get_osfhandle (fd) != -1; 1050 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
744#else 1051#else
745 return fcntl (fd, F_GETFD) != -1; 1052 return fcntl (fd, F_GETFD) != -1;
746#endif 1053#endif
747} 1054}
748 1055
… …
752{ 1059{
753 int fd; 1060 int fd;
754 1061
755 for (fd = 0; fd < anfdmax; ++fd) 1062 for (fd = 0; fd < anfdmax; ++fd)
756 if (anfds [fd].events) 1063 if (anfds [fd].events)
757 if (!fd_valid (fd) == -1 && errno == EBADF) 1064 if (!fd_valid (fd) && errno == EBADF)
758 fd_kill (EV_A_ fd); 1065 fd_kill (EV_A_ fd);
759} 1066}
760 1067
761/* called on ENOMEM in select/poll to kill some fds and retry */ 1068/* called on ENOMEM in select/poll to kill some fds and retry */
762static void noinline 1069static void noinline
… …
766 1073
767 for (fd = anfdmax; fd--; ) 1074 for (fd = anfdmax; fd--; )
768 if (anfds [fd].events) 1075 if (anfds [fd].events)
769 { 1076 {
770 fd_kill (EV_A_ fd); 1077 fd_kill (EV_A_ fd);
771 return; 1078 break;
772 } 1079 }
773} 1080}
774 1081
775/* usually called after fork if backend needs to re-arm all fds from scratch */ 1082/* usually called after fork if backend needs to re-arm all fds from scratch */
776static void noinline 1083static void noinline
… …
780 1087
781 for (fd = 0; fd < anfdmax; ++fd) 1088 for (fd = 0; fd < anfdmax; ++fd)
782 if (anfds [fd].events) 1089 if (anfds [fd].events)
783 { 1090 {
784 anfds [fd].events = 0; 1091 anfds [fd].events = 0;
1092 anfds [fd].emask = 0;
785 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1093 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
786 } 1094 }
787} 1095}
788 1096
1097/* used to prepare libev internal fd's */
1098/* this is not fork-safe */
1099inline_speed void
1100fd_intern (int fd)
1101{
1102#ifdef _WIN32
1103 unsigned long arg = 1;
1104 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1105#else
1106 fcntl (fd, F_SETFD, FD_CLOEXEC);
1107 fcntl (fd, F_SETFL, O_NONBLOCK);
1108#endif
1109}
1110
789/*****************************************************************************/ 1111/*****************************************************************************/
790 1112
791/* 1113/*
792 * the heap functions want a real array index. array index 0 uis guaranteed to not 1114 * the heap functions want a real array index. array index 0 is guaranteed to not
793 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1115 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
794 * the branching factor of the d-tree. 1116 * the branching factor of the d-tree.
795 */ 1117 */
796 1118
797/* 1119/*
… …
802 */ 1124 */
803#if EV_USE_4HEAP 1125#if EV_USE_4HEAP
804 1126
805#define DHEAP 4 1127#define DHEAP 4
806#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1128#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807 1129#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808/* towards the root */ 1130#define UPHEAP_DONE(p,k) ((p) == (k))
809void inline_speed
810upheap (ANHE *heap, int k)
811{
812 ANHE he = heap [k];
813
814 for (;;)
815 {
816 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
817
818 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
819 break;
820
821 heap [k] = heap [p];
822 ev_active (ANHE_w (heap [k])) = k;
823 k = p;
824 }
825
826 ev_active (ANHE_w (he)) = k;
827 heap [k] = he;
828}
829 1131
830/* away from the root */ 1132/* away from the root */
831void inline_speed 1133inline_speed void
832downheap (ANHE *heap, int N, int k) 1134downheap (ANHE *heap, int N, int k)
833{ 1135{
834 ANHE he = heap [k]; 1136 ANHE he = heap [k];
835 ANHE *E = heap + N + HEAP0; 1137 ANHE *E = heap + N + HEAP0;
836 1138
837 for (;;) 1139 for (;;)
838 { 1140 {
839 ev_tstamp minat; 1141 ev_tstamp minat;
840 ANHE *minpos; 1142 ANHE *minpos;
841 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1143 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
842 1144
843 // find minimum child 1145 /* find minimum child */
844 if (expect_true (pos + DHEAP - 1 < E)) 1146 if (expect_true (pos + DHEAP - 1 < E))
845 { 1147 {
846 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1148 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847 if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1149 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
848 if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 1150 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
849 if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 1151 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
850 } 1152 }
851 else if (pos < E) 1153 else if (pos < E)
852 { 1154 {
853 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1155 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
854 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1156 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
… …
859 break; 1161 break;
860 1162
861 if (ANHE_at (he) <= minat) 1163 if (ANHE_at (he) <= minat)
862 break; 1164 break;
863 1165
1166 heap [k] = *minpos;
864 ev_active (ANHE_w (*minpos)) = k; 1167 ev_active (ANHE_w (*minpos)) = k;
865 heap [k] = *minpos;
866 1168
867 k = minpos - heap; 1169 k = minpos - heap;
868 } 1170 }
869 1171
1172 heap [k] = he;
870 ev_active (ANHE_w (he)) = k; 1173 ev_active (ANHE_w (he)) = k;
871 heap [k] = he;
872} 1174}
873 1175
874#else // 4HEAP 1176#else /* 4HEAP */
875 1177
876#define HEAP0 1 1178#define HEAP0 1
1179#define HPARENT(k) ((k) >> 1)
1180#define UPHEAP_DONE(p,k) (!(p))
877 1181
878/* towards the root */ 1182/* away from the root */
879void inline_speed 1183inline_speed void
880upheap (ANHE *heap, int k) 1184downheap (ANHE *heap, int N, int k)
881{ 1185{
882 ANHE he = heap [k]; 1186 ANHE he = heap [k];
883 1187
884 for (;;) 1188 for (;;)
885 { 1189 {
886 int p = k >> 1; 1190 int c = k << 1;
887 1191
888 /* maybe we could use a dummy element at heap [0]? */ 1192 if (c >= N + HEAP0)
889 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
890 break; 1193 break;
891 1194
892 heap [k] = heap [p];
893 ev_active (ANHE_w (heap [k])) = k;
894 k = p;
895 }
896
897 heap [k] = he;
898 ev_active (ANHE_w (heap [k])) = k;
899}
900
901/* away from the root */
902void inline_speed
903downheap (ANHE *heap, int N, int k)
904{
905 ANHE he = heap [k];
906
907 for (;;)
908 {
909 int c = k << 1;
910
911 if (c > N)
912 break;
913
914 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1195 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
915 ? 1 : 0; 1196 ? 1 : 0;
916 1197
917 if (ANHE_at (he) <= ANHE_at (heap [c])) 1198 if (ANHE_at (he) <= ANHE_at (heap [c]))
918 break; 1199 break;
919 1200
… …
926 heap [k] = he; 1207 heap [k] = he;
927 ev_active (ANHE_w (he)) = k; 1208 ev_active (ANHE_w (he)) = k;
928} 1209}
929#endif 1210#endif
930 1211
931void inline_size 1212/* towards the root */
1213inline_speed void
1214upheap (ANHE *heap, int k)
1215{
1216 ANHE he = heap [k];
1217
1218 for (;;)
1219 {
1220 int p = HPARENT (k);
1221
1222 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1223 break;
1224
1225 heap [k] = heap [p];
1226 ev_active (ANHE_w (heap [k])) = k;
1227 k = p;
1228 }
1229
1230 heap [k] = he;
1231 ev_active (ANHE_w (he)) = k;
1232}
1233
1234/* move an element suitably so it is in a correct place */
1235inline_size void
932adjustheap (ANHE *heap, int N, int k) 1236adjustheap (ANHE *heap, int N, int k)
933{ 1237{
1238 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
934 upheap (heap, k); 1239 upheap (heap, k);
1240 else
935 downheap (heap, N, k); 1241 downheap (heap, N, k);
1242}
1243
1244/* rebuild the heap: this function is used only once and executed rarely */
1245inline_size void
1246reheap (ANHE *heap, int N)
1247{
1248 int i;
1249
1250 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1251 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1252 for (i = 0; i < N; ++i)
1253 upheap (heap, i + HEAP0);
936} 1254}
937 1255
938/*****************************************************************************/ 1256/*****************************************************************************/
939 1257
1258/* associate signal watchers to a signal signal */
940typedef struct 1259typedef struct
941{ 1260{
1261 EV_ATOMIC_T pending;
1262#if EV_MULTIPLICITY
1263 EV_P;
1264#endif
942 WL head; 1265 WL head;
943 EV_ATOMIC_T gotsig;
944} ANSIG; 1266} ANSIG;
945 1267
946static ANSIG *signals; 1268static ANSIG signals [EV_NSIG - 1];
947static int signalmax;
948
949static EV_ATOMIC_T gotsig;
950
951void inline_size
952signals_init (ANSIG *base, int count)
953{
954 while (count--)
955 {
956 base->head = 0;
957 base->gotsig = 0;
958
959 ++base;
960 }
961}
962 1269
963/*****************************************************************************/ 1270/*****************************************************************************/
964 1271
965void inline_speed 1272#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
966fd_intern (int fd)
967{
968#ifdef _WIN32
969 int arg = 1;
970 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
971#else
972 fcntl (fd, F_SETFD, FD_CLOEXEC);
973 fcntl (fd, F_SETFL, O_NONBLOCK);
974#endif
975}
976 1273
977static void noinline 1274static void noinline
978evpipe_init (EV_P) 1275evpipe_init (EV_P)
979{ 1276{
980 if (!ev_is_active (&pipeev)) 1277 if (!ev_is_active (&pipe_w))
981 { 1278 {
982#if EV_USE_EVENTFD 1279# if EV_USE_EVENTFD
1280 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1281 if (evfd < 0 && errno == EINVAL)
983 if ((evfd = eventfd (0, 0)) >= 0) 1282 evfd = eventfd (0, 0);
1283
1284 if (evfd >= 0)
984 { 1285 {
985 evpipe [0] = -1; 1286 evpipe [0] = -1;
986 fd_intern (evfd); 1287 fd_intern (evfd); /* doing it twice doesn't hurt */
987 ev_io_set (&pipeev, evfd, EV_READ); 1288 ev_io_set (&pipe_w, evfd, EV_READ);
988 } 1289 }
989 else 1290 else
990#endif 1291# endif
991 { 1292 {
992 while (pipe (evpipe)) 1293 while (pipe (evpipe))
993 syserr ("(libev) error creating signal/async pipe"); 1294 ev_syserr ("(libev) error creating signal/async pipe");
994 1295
995 fd_intern (evpipe [0]); 1296 fd_intern (evpipe [0]);
996 fd_intern (evpipe [1]); 1297 fd_intern (evpipe [1]);
997 ev_io_set (&pipeev, evpipe [0], EV_READ); 1298 ev_io_set (&pipe_w, evpipe [0], EV_READ);
998 } 1299 }
999 1300
1000 ev_io_start (EV_A_ &pipeev); 1301 ev_io_start (EV_A_ &pipe_w);
1001 ev_unref (EV_A); /* watcher should not keep loop alive */ 1302 ev_unref (EV_A); /* watcher should not keep loop alive */
1002 } 1303 }
1003} 1304}
1004 1305
1005void inline_size 1306inline_size void
1006evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1307evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1007{ 1308{
1008 if (!*flag) 1309 if (!*flag)
1009 { 1310 {
1010 int old_errno = errno; /* save errno because write might clobber it */ 1311 int old_errno = errno; /* save errno because write might clobber it */
1312 char dummy;
1011 1313
1012 *flag = 1; 1314 *flag = 1;
1013 1315
1014#if EV_USE_EVENTFD 1316#if EV_USE_EVENTFD
1015 if (evfd >= 0) 1317 if (evfd >= 0)
… …
1017 uint64_t counter = 1; 1319 uint64_t counter = 1;
1018 write (evfd, &counter, sizeof (uint64_t)); 1320 write (evfd, &counter, sizeof (uint64_t));
1019 } 1321 }
1020 else 1322 else
1021#endif 1323#endif
1324 /* win32 people keep sending patches that change this write() to send() */
1325 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1326 /* so when you think this write should be a send instead, please find out */
1327 /* where your send() is from - it's definitely not the microsoft send, and */
1328 /* tell me. thank you. */
1022 write (evpipe [1], &old_errno, 1); 1329 write (evpipe [1], &dummy, 1);
1023 1330
1024 errno = old_errno; 1331 errno = old_errno;
1025 } 1332 }
1026} 1333}
1027 1334
1335/* called whenever the libev signal pipe */
1336/* got some events (signal, async) */
1028static void 1337static void
1029pipecb (EV_P_ ev_io *iow, int revents) 1338pipecb (EV_P_ ev_io *iow, int revents)
1030{ 1339{
1340 int i;
1341
1031#if EV_USE_EVENTFD 1342#if EV_USE_EVENTFD
1032 if (evfd >= 0) 1343 if (evfd >= 0)
1033 { 1344 {
1034 uint64_t counter; 1345 uint64_t counter;
1035 read (evfd, &counter, sizeof (uint64_t)); 1346 read (evfd, &counter, sizeof (uint64_t));
1036 } 1347 }
1037 else 1348 else
1038#endif 1349#endif
1039 { 1350 {
1040 char dummy; 1351 char dummy;
1352 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1041 read (evpipe [0], &dummy, 1); 1353 read (evpipe [0], &dummy, 1);
1042 } 1354 }
1043 1355
1044 if (gotsig && ev_is_default_loop (EV_A)) 1356#if EV_SIGNAL_ENABLE
1357 if (sig_pending)
1045 { 1358 {
1046 int signum; 1359 sig_pending = 0;
1047 gotsig = 0;
1048 1360
1049 for (signum = signalmax; signum--; ) 1361 for (i = EV_NSIG - 1; i--; )
1050 if (signals [signum].gotsig) 1362 if (expect_false (signals [i].pending))
1051 ev_feed_signal_event (EV_A_ signum + 1); 1363 ev_feed_signal_event (EV_A_ i + 1);
1052 } 1364 }
1365#endif
1053 1366
1054#if EV_ASYNC_ENABLE 1367#if EV_ASYNC_ENABLE
1055 if (gotasync) 1368 if (async_pending)
1056 { 1369 {
1057 int i; 1370 async_pending = 0;
1058 gotasync = 0;
1059 1371
1060 for (i = asynccnt; i--; ) 1372 for (i = asynccnt; i--; )
1061 if (asyncs [i]->sent) 1373 if (asyncs [i]->sent)
1062 { 1374 {
1063 asyncs [i]->sent = 0; 1375 asyncs [i]->sent = 0;
… …
1067#endif 1379#endif
1068} 1380}
1069 1381
1070/*****************************************************************************/ 1382/*****************************************************************************/
1071 1383
1384void
1385ev_feed_signal (int signum)
1386{
1387#if EV_MULTIPLICITY
1388 EV_P = signals [signum - 1].loop;
1389
1390 if (!EV_A)
1391 return;
1392#endif
1393
1394 signals [signum - 1].pending = 1;
1395 evpipe_write (EV_A_ &sig_pending);
1396}
1397
1072static void 1398static void
1073ev_sighandler (int signum) 1399ev_sighandler (int signum)
1074{ 1400{
1075#if EV_MULTIPLICITY
1076 struct ev_loop *loop = &default_loop_struct;
1077#endif
1078
1079#if _WIN32 1401#ifdef _WIN32
1080 signal (signum, ev_sighandler); 1402 signal (signum, ev_sighandler);
1081#endif 1403#endif
1082 1404
1083 signals [signum - 1].gotsig = 1; 1405 ev_feed_signal (signum);
1084 evpipe_write (EV_A_ &gotsig);
1085} 1406}
1086 1407
1087void noinline 1408void noinline
1088ev_feed_signal_event (EV_P_ int signum) 1409ev_feed_signal_event (EV_P_ int signum)
1089{ 1410{
1090 WL w; 1411 WL w;
1091 1412
1413 if (expect_false (signum <= 0 || signum > EV_NSIG))
1414 return;
1415
1416 --signum;
1417
1092#if EV_MULTIPLICITY 1418#if EV_MULTIPLICITY
1093 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1419 /* it is permissible to try to feed a signal to the wrong loop */
1094#endif 1420 /* or, likely more useful, feeding a signal nobody is waiting for */
1095 1421
1096 --signum; 1422 if (expect_false (signals [signum].loop != EV_A))
1097
1098 if (signum < 0 || signum >= signalmax)
1099 return; 1423 return;
1424#endif
1100 1425
1101 signals [signum].gotsig = 0; 1426 signals [signum].pending = 0;
1102 1427
1103 for (w = signals [signum].head; w; w = w->next) 1428 for (w = signals [signum].head; w; w = w->next)
1104 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1429 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1105} 1430}
1106 1431
1432#if EV_USE_SIGNALFD
1433static void
1434sigfdcb (EV_P_ ev_io *iow, int revents)
1435{
1436 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1437
1438 for (;;)
1439 {
1440 ssize_t res = read (sigfd, si, sizeof (si));
1441
1442 /* not ISO-C, as res might be -1, but works with SuS */
1443 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1444 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1445
1446 if (res < (ssize_t)sizeof (si))
1447 break;
1448 }
1449}
1450#endif
1451
1452#endif
1453
1107/*****************************************************************************/ 1454/*****************************************************************************/
1108 1455
1456#if EV_CHILD_ENABLE
1109static WL childs [EV_PID_HASHSIZE]; 1457static WL childs [EV_PID_HASHSIZE];
1110
1111#ifndef _WIN32
1112 1458
1113static ev_signal childev; 1459static ev_signal childev;
1114 1460
1115#ifndef WIFCONTINUED 1461#ifndef WIFCONTINUED
1116# define WIFCONTINUED(status) 0 1462# define WIFCONTINUED(status) 0
1117#endif 1463#endif
1118 1464
1119void inline_speed 1465/* handle a single child status event */
1466inline_speed void
1120child_reap (EV_P_ int chain, int pid, int status) 1467child_reap (EV_P_ int chain, int pid, int status)
1121{ 1468{
1122 ev_child *w; 1469 ev_child *w;
1123 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1470 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1124 1471
1125 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1472 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1126 { 1473 {
1127 if ((w->pid == pid || !w->pid) 1474 if ((w->pid == pid || !w->pid)
1128 && (!traced || (w->flags & 1))) 1475 && (!traced || (w->flags & 1)))
1129 { 1476 {
1130 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1477 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1137 1484
1138#ifndef WCONTINUED 1485#ifndef WCONTINUED
1139# define WCONTINUED 0 1486# define WCONTINUED 0
1140#endif 1487#endif
1141 1488
1489/* called on sigchld etc., calls waitpid */
1142static void 1490static void
1143childcb (EV_P_ ev_signal *sw, int revents) 1491childcb (EV_P_ ev_signal *sw, int revents)
1144{ 1492{
1145 int pid, status; 1493 int pid, status;
1146 1494
… …
1154 /* make sure we are called again until all children have been reaped */ 1502 /* make sure we are called again until all children have been reaped */
1155 /* we need to do it this way so that the callback gets called before we continue */ 1503 /* we need to do it this way so that the callback gets called before we continue */
1156 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1504 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1157 1505
1158 child_reap (EV_A_ pid, pid, status); 1506 child_reap (EV_A_ pid, pid, status);
1159 if (EV_PID_HASHSIZE > 1) 1507 if ((EV_PID_HASHSIZE) > 1)
1160 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1508 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1161} 1509}
1162 1510
1163#endif 1511#endif
1164 1512
1165/*****************************************************************************/ 1513/*****************************************************************************/
1166 1514
1515#if EV_USE_IOCP
1516# include "ev_iocp.c"
1517#endif
1167#if EV_USE_PORT 1518#if EV_USE_PORT
1168# include "ev_port.c" 1519# include "ev_port.c"
1169#endif 1520#endif
1170#if EV_USE_KQUEUE 1521#if EV_USE_KQUEUE
1171# include "ev_kqueue.c" 1522# include "ev_kqueue.c"
… …
1227 /* kqueue is borked on everything but netbsd apparently */ 1578 /* kqueue is borked on everything but netbsd apparently */
1228 /* it usually doesn't work correctly on anything but sockets and pipes */ 1579 /* it usually doesn't work correctly on anything but sockets and pipes */
1229 flags &= ~EVBACKEND_KQUEUE; 1580 flags &= ~EVBACKEND_KQUEUE;
1230#endif 1581#endif
1231#ifdef __APPLE__ 1582#ifdef __APPLE__
1232 // flags &= ~EVBACKEND_KQUEUE; for documentation 1583 /* only select works correctly on that "unix-certified" platform */
1233 flags &= ~EVBACKEND_POLL; 1584 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1585 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1586#endif
1587#ifdef __FreeBSD__
1588 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1234#endif 1589#endif
1235 1590
1236 return flags; 1591 return flags;
1237} 1592}
1238 1593
… …
1240ev_embeddable_backends (void) 1595ev_embeddable_backends (void)
1241{ 1596{
1242 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1597 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1243 1598
1244 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1599 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1245 /* please fix it and tell me how to detect the fix */ 1600 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1246 flags &= ~EVBACKEND_EPOLL; 1601 flags &= ~EVBACKEND_EPOLL;
1247 1602
1248 return flags; 1603 return flags;
1249} 1604}
1250 1605
1251unsigned int 1606unsigned int
1252ev_backend (EV_P) 1607ev_backend (EV_P)
1253{ 1608{
1254 return backend; 1609 return backend;
1255} 1610}
1256 1611
1612#if EV_FEATURE_API
1257unsigned int 1613unsigned int
1258ev_loop_count (EV_P) 1614ev_iteration (EV_P)
1259{ 1615{
1260 return loop_count; 1616 return loop_count;
1261} 1617}
1262 1618
1619unsigned int
1620ev_depth (EV_P)
1621{
1622 return loop_depth;
1623}
1624
1263void 1625void
1264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1626ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1265{ 1627{
1266 io_blocktime = interval; 1628 io_blocktime = interval;
1267} 1629}
… …
1270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1632ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1271{ 1633{
1272 timeout_blocktime = interval; 1634 timeout_blocktime = interval;
1273} 1635}
1274 1636
1637void
1638ev_set_userdata (EV_P_ void *data)
1639{
1640 userdata = data;
1641}
1642
1643void *
1644ev_userdata (EV_P)
1645{
1646 return userdata;
1647}
1648
1649void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1650{
1651 invoke_cb = invoke_pending_cb;
1652}
1653
1654void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1655{
1656 release_cb = release;
1657 acquire_cb = acquire;
1658}
1659#endif
1660
1661/* initialise a loop structure, must be zero-initialised */
1275static void noinline 1662static void noinline
1276loop_init (EV_P_ unsigned int flags) 1663loop_init (EV_P_ unsigned int flags)
1277{ 1664{
1278 if (!backend) 1665 if (!backend)
1279 { 1666 {
1667 origflags = flags;
1668
1669#if EV_USE_REALTIME
1670 if (!have_realtime)
1671 {
1672 struct timespec ts;
1673
1674 if (!clock_gettime (CLOCK_REALTIME, &ts))
1675 have_realtime = 1;
1676 }
1677#endif
1678
1280#if EV_USE_MONOTONIC 1679#if EV_USE_MONOTONIC
1680 if (!have_monotonic)
1281 { 1681 {
1282 struct timespec ts; 1682 struct timespec ts;
1683
1283 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1684 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1284 have_monotonic = 1; 1685 have_monotonic = 1;
1285 } 1686 }
1286#endif 1687#endif
1688
1689 /* pid check not overridable via env */
1690#ifndef _WIN32
1691 if (flags & EVFLAG_FORKCHECK)
1692 curpid = getpid ();
1693#endif
1694
1695 if (!(flags & EVFLAG_NOENV)
1696 && !enable_secure ()
1697 && getenv ("LIBEV_FLAGS"))
1698 flags = atoi (getenv ("LIBEV_FLAGS"));
1287 1699
1288 ev_rt_now = ev_time (); 1700 ev_rt_now = ev_time ();
1289 mn_now = get_clock (); 1701 mn_now = get_clock ();
1290 now_floor = mn_now; 1702 now_floor = mn_now;
1291 rtmn_diff = ev_rt_now - mn_now; 1703 rtmn_diff = ev_rt_now - mn_now;
1704#if EV_FEATURE_API
1705 invoke_cb = ev_invoke_pending;
1706#endif
1292 1707
1293 io_blocktime = 0.; 1708 io_blocktime = 0.;
1294 timeout_blocktime = 0.; 1709 timeout_blocktime = 0.;
1295 backend = 0; 1710 backend = 0;
1296 backend_fd = -1; 1711 backend_fd = -1;
1297 gotasync = 0; 1712 sig_pending = 0;
1713#if EV_ASYNC_ENABLE
1714 async_pending = 0;
1715#endif
1298#if EV_USE_INOTIFY 1716#if EV_USE_INOTIFY
1299 fs_fd = -2; 1717 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1300#endif 1718#endif
1301 1719#if EV_USE_SIGNALFD
1302 /* pid check not overridable via env */ 1720 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1303#ifndef _WIN32
1304 if (flags & EVFLAG_FORKCHECK)
1305 curpid = getpid ();
1306#endif 1721#endif
1307 1722
1308 if (!(flags & EVFLAG_NOENV) 1723 if (!(flags & EVBACKEND_MASK))
1309 && !enable_secure ()
1310 && getenv ("LIBEV_FLAGS"))
1311 flags = atoi (getenv ("LIBEV_FLAGS"));
1312
1313 if (!(flags & 0x0000ffffU))
1314 flags |= ev_recommended_backends (); 1724 flags |= ev_recommended_backends ();
1315 1725
1726#if EV_USE_IOCP
1727 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1728#endif
1316#if EV_USE_PORT 1729#if EV_USE_PORT
1317 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1730 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1318#endif 1731#endif
1319#if EV_USE_KQUEUE 1732#if EV_USE_KQUEUE
1320 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1733 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1327#endif 1740#endif
1328#if EV_USE_SELECT 1741#if EV_USE_SELECT
1329 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1742 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1330#endif 1743#endif
1331 1744
1745 ev_prepare_init (&pending_w, pendingcb);
1746
1747#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1332 ev_init (&pipeev, pipecb); 1748 ev_init (&pipe_w, pipecb);
1333 ev_set_priority (&pipeev, EV_MAXPRI); 1749 ev_set_priority (&pipe_w, EV_MAXPRI);
1750#endif
1334 } 1751 }
1335} 1752}
1336 1753
1337static void noinline 1754/* free up a loop structure */
1755void
1338loop_destroy (EV_P) 1756ev_loop_destroy (EV_P)
1339{ 1757{
1340 int i; 1758 int i;
1341 1759
1760#if EV_MULTIPLICITY
1761 /* mimic free (0) */
1762 if (!EV_A)
1763 return;
1764#endif
1765
1766#if EV_CLEANUP_ENABLE
1767 /* queue cleanup watchers (and execute them) */
1768 if (expect_false (cleanupcnt))
1769 {
1770 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1771 EV_INVOKE_PENDING;
1772 }
1773#endif
1774
1775#if EV_CHILD_ENABLE
1776 if (ev_is_active (&childev))
1777 {
1778 ev_ref (EV_A); /* child watcher */
1779 ev_signal_stop (EV_A_ &childev);
1780 }
1781#endif
1782
1342 if (ev_is_active (&pipeev)) 1783 if (ev_is_active (&pipe_w))
1343 { 1784 {
1344 ev_ref (EV_A); /* signal watcher */ 1785 /*ev_ref (EV_A);*/
1345 ev_io_stop (EV_A_ &pipeev); 1786 /*ev_io_stop (EV_A_ &pipe_w);*/
1346 1787
1347#if EV_USE_EVENTFD 1788#if EV_USE_EVENTFD
1348 if (evfd >= 0) 1789 if (evfd >= 0)
1349 close (evfd); 1790 close (evfd);
1350#endif 1791#endif
1351 1792
1352 if (evpipe [0] >= 0) 1793 if (evpipe [0] >= 0)
1353 { 1794 {
1354 close (evpipe [0]); 1795 EV_WIN32_CLOSE_FD (evpipe [0]);
1355 close (evpipe [1]); 1796 EV_WIN32_CLOSE_FD (evpipe [1]);
1356 } 1797 }
1357 } 1798 }
1799
1800#if EV_USE_SIGNALFD
1801 if (ev_is_active (&sigfd_w))
1802 close (sigfd);
1803#endif
1358 1804
1359#if EV_USE_INOTIFY 1805#if EV_USE_INOTIFY
1360 if (fs_fd >= 0) 1806 if (fs_fd >= 0)
1361 close (fs_fd); 1807 close (fs_fd);
1362#endif 1808#endif
1363 1809
1364 if (backend_fd >= 0) 1810 if (backend_fd >= 0)
1365 close (backend_fd); 1811 close (backend_fd);
1366 1812
1813#if EV_USE_IOCP
1814 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1815#endif
1367#if EV_USE_PORT 1816#if EV_USE_PORT
1368 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1817 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1369#endif 1818#endif
1370#if EV_USE_KQUEUE 1819#if EV_USE_KQUEUE
1371 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1820 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1386#if EV_IDLE_ENABLE 1835#if EV_IDLE_ENABLE
1387 array_free (idle, [i]); 1836 array_free (idle, [i]);
1388#endif 1837#endif
1389 } 1838 }
1390 1839
1391 ev_free (anfds); anfdmax = 0; 1840 ev_free (anfds); anfds = 0; anfdmax = 0;
1392 1841
1393 /* have to use the microsoft-never-gets-it-right macro */ 1842 /* have to use the microsoft-never-gets-it-right macro */
1843 array_free (rfeed, EMPTY);
1394 array_free (fdchange, EMPTY); 1844 array_free (fdchange, EMPTY);
1395 array_free (timer, EMPTY); 1845 array_free (timer, EMPTY);
1396#if EV_PERIODIC_ENABLE 1846#if EV_PERIODIC_ENABLE
1397 array_free (periodic, EMPTY); 1847 array_free (periodic, EMPTY);
1398#endif 1848#endif
1399#if EV_FORK_ENABLE 1849#if EV_FORK_ENABLE
1400 array_free (fork, EMPTY); 1850 array_free (fork, EMPTY);
1401#endif 1851#endif
1852#if EV_CLEANUP_ENABLE
1853 array_free (cleanup, EMPTY);
1854#endif
1402 array_free (prepare, EMPTY); 1855 array_free (prepare, EMPTY);
1403 array_free (check, EMPTY); 1856 array_free (check, EMPTY);
1404#if EV_ASYNC_ENABLE 1857#if EV_ASYNC_ENABLE
1405 array_free (async, EMPTY); 1858 array_free (async, EMPTY);
1406#endif 1859#endif
1407 1860
1408 backend = 0; 1861 backend = 0;
1862
1863#if EV_MULTIPLICITY
1864 if (ev_is_default_loop (EV_A))
1865#endif
1866 ev_default_loop_ptr = 0;
1867#if EV_MULTIPLICITY
1868 else
1869 ev_free (EV_A);
1870#endif
1409} 1871}
1410 1872
1411#if EV_USE_INOTIFY 1873#if EV_USE_INOTIFY
1412void inline_size infy_fork (EV_P); 1874inline_size void infy_fork (EV_P);
1413#endif 1875#endif
1414 1876
1415void inline_size 1877inline_size void
1416loop_fork (EV_P) 1878loop_fork (EV_P)
1417{ 1879{
1418#if EV_USE_PORT 1880#if EV_USE_PORT
1419 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1881 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1420#endif 1882#endif
… …
1426#endif 1888#endif
1427#if EV_USE_INOTIFY 1889#if EV_USE_INOTIFY
1428 infy_fork (EV_A); 1890 infy_fork (EV_A);
1429#endif 1891#endif
1430 1892
1431 if (ev_is_active (&pipeev)) 1893 if (ev_is_active (&pipe_w))
1432 { 1894 {
1433 /* this "locks" the handlers against writing to the pipe */ 1895 /* this "locks" the handlers against writing to the pipe */
1434 /* while we modify the fd vars */ 1896 /* while we modify the fd vars */
1435 gotsig = 1; 1897 sig_pending = 1;
1436#if EV_ASYNC_ENABLE 1898#if EV_ASYNC_ENABLE
1437 gotasync = 1; 1899 async_pending = 1;
1438#endif 1900#endif
1439 1901
1440 ev_ref (EV_A); 1902 ev_ref (EV_A);
1441 ev_io_stop (EV_A_ &pipeev); 1903 ev_io_stop (EV_A_ &pipe_w);
1442 1904
1443#if EV_USE_EVENTFD 1905#if EV_USE_EVENTFD
1444 if (evfd >= 0) 1906 if (evfd >= 0)
1445 close (evfd); 1907 close (evfd);
1446#endif 1908#endif
1447 1909
1448 if (evpipe [0] >= 0) 1910 if (evpipe [0] >= 0)
1449 { 1911 {
1450 close (evpipe [0]); 1912 EV_WIN32_CLOSE_FD (evpipe [0]);
1451 close (evpipe [1]); 1913 EV_WIN32_CLOSE_FD (evpipe [1]);
1452 } 1914 }
1453 1915
1916#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1454 evpipe_init (EV_A); 1917 evpipe_init (EV_A);
1455 /* now iterate over everything, in case we missed something */ 1918 /* now iterate over everything, in case we missed something */
1456 pipecb (EV_A_ &pipeev, EV_READ); 1919 pipecb (EV_A_ &pipe_w, EV_READ);
1920#endif
1457 } 1921 }
1458 1922
1459 postfork = 0; 1923 postfork = 0;
1460} 1924}
1925
1926#if EV_MULTIPLICITY
1927
1928struct ev_loop *
1929ev_loop_new (unsigned int flags)
1930{
1931 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1932
1933 memset (EV_A, 0, sizeof (struct ev_loop));
1934 loop_init (EV_A_ flags);
1935
1936 if (ev_backend (EV_A))
1937 return EV_A;
1938
1939 ev_free (EV_A);
1940 return 0;
1941}
1942
1943#endif /* multiplicity */
1944
1945#if EV_VERIFY
1946static void noinline
1947verify_watcher (EV_P_ W w)
1948{
1949 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1950
1951 if (w->pending)
1952 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1953}
1954
1955static void noinline
1956verify_heap (EV_P_ ANHE *heap, int N)
1957{
1958 int i;
1959
1960 for (i = HEAP0; i < N + HEAP0; ++i)
1961 {
1962 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1963 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1964 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1965
1966 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1967 }
1968}
1969
1970static void noinline
1971array_verify (EV_P_ W *ws, int cnt)
1972{
1973 while (cnt--)
1974 {
1975 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1976 verify_watcher (EV_A_ ws [cnt]);
1977 }
1978}
1979#endif
1980
1981#if EV_FEATURE_API
1982void
1983ev_verify (EV_P)
1984{
1985#if EV_VERIFY
1986 int i;
1987 WL w;
1988
1989 assert (activecnt >= -1);
1990
1991 assert (fdchangemax >= fdchangecnt);
1992 for (i = 0; i < fdchangecnt; ++i)
1993 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1994
1995 assert (anfdmax >= 0);
1996 for (i = 0; i < anfdmax; ++i)
1997 for (w = anfds [i].head; w; w = w->next)
1998 {
1999 verify_watcher (EV_A_ (W)w);
2000 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2001 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2002 }
2003
2004 assert (timermax >= timercnt);
2005 verify_heap (EV_A_ timers, timercnt);
2006
2007#if EV_PERIODIC_ENABLE
2008 assert (periodicmax >= periodiccnt);
2009 verify_heap (EV_A_ periodics, periodiccnt);
2010#endif
2011
2012 for (i = NUMPRI; i--; )
2013 {
2014 assert (pendingmax [i] >= pendingcnt [i]);
2015#if EV_IDLE_ENABLE
2016 assert (idleall >= 0);
2017 assert (idlemax [i] >= idlecnt [i]);
2018 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2019#endif
2020 }
2021
2022#if EV_FORK_ENABLE
2023 assert (forkmax >= forkcnt);
2024 array_verify (EV_A_ (W *)forks, forkcnt);
2025#endif
2026
2027#if EV_CLEANUP_ENABLE
2028 assert (cleanupmax >= cleanupcnt);
2029 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2030#endif
2031
2032#if EV_ASYNC_ENABLE
2033 assert (asyncmax >= asynccnt);
2034 array_verify (EV_A_ (W *)asyncs, asynccnt);
2035#endif
2036
2037#if EV_PREPARE_ENABLE
2038 assert (preparemax >= preparecnt);
2039 array_verify (EV_A_ (W *)prepares, preparecnt);
2040#endif
2041
2042#if EV_CHECK_ENABLE
2043 assert (checkmax >= checkcnt);
2044 array_verify (EV_A_ (W *)checks, checkcnt);
2045#endif
2046
2047# if 0
2048#if EV_CHILD_ENABLE
2049 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2050 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2051#endif
2052# endif
2053#endif
2054}
2055#endif
1461 2056
1462#if EV_MULTIPLICITY 2057#if EV_MULTIPLICITY
1463struct ev_loop * 2058struct ev_loop *
1464ev_loop_new (unsigned int flags)
1465{
1466 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1467
1468 memset (loop, 0, sizeof (struct ev_loop));
1469
1470 loop_init (EV_A_ flags);
1471
1472 if (ev_backend (EV_A))
1473 return loop;
1474
1475 return 0;
1476}
1477
1478void
1479ev_loop_destroy (EV_P)
1480{
1481 loop_destroy (EV_A);
1482 ev_free (loop);
1483}
1484
1485void
1486ev_loop_fork (EV_P)
1487{
1488 postfork = 1; /* must be in line with ev_default_fork */
1489}
1490#endif
1491
1492#if EV_MULTIPLICITY
1493struct ev_loop *
1494ev_default_loop_init (unsigned int flags)
1495#else 2059#else
1496int 2060int
2061#endif
1497ev_default_loop (unsigned int flags) 2062ev_default_loop (unsigned int flags)
1498#endif
1499{ 2063{
1500 if (!ev_default_loop_ptr) 2064 if (!ev_default_loop_ptr)
1501 { 2065 {
1502#if EV_MULTIPLICITY 2066#if EV_MULTIPLICITY
1503 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2067 EV_P = ev_default_loop_ptr = &default_loop_struct;
1504#else 2068#else
1505 ev_default_loop_ptr = 1; 2069 ev_default_loop_ptr = 1;
1506#endif 2070#endif
1507 2071
1508 loop_init (EV_A_ flags); 2072 loop_init (EV_A_ flags);
1509 2073
1510 if (ev_backend (EV_A)) 2074 if (ev_backend (EV_A))
1511 { 2075 {
1512#ifndef _WIN32 2076#if EV_CHILD_ENABLE
1513 ev_signal_init (&childev, childcb, SIGCHLD); 2077 ev_signal_init (&childev, childcb, SIGCHLD);
1514 ev_set_priority (&childev, EV_MAXPRI); 2078 ev_set_priority (&childev, EV_MAXPRI);
1515 ev_signal_start (EV_A_ &childev); 2079 ev_signal_start (EV_A_ &childev);
1516 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2080 ev_unref (EV_A); /* child watcher should not keep loop alive */
1517#endif 2081#endif
… …
1522 2086
1523 return ev_default_loop_ptr; 2087 return ev_default_loop_ptr;
1524} 2088}
1525 2089
1526void 2090void
1527ev_default_destroy (void) 2091ev_loop_fork (EV_P)
1528{ 2092{
1529#if EV_MULTIPLICITY
1530 struct ev_loop *loop = ev_default_loop_ptr;
1531#endif
1532
1533#ifndef _WIN32
1534 ev_ref (EV_A); /* child watcher */
1535 ev_signal_stop (EV_A_ &childev);
1536#endif
1537
1538 loop_destroy (EV_A);
1539}
1540
1541void
1542ev_default_fork (void)
1543{
1544#if EV_MULTIPLICITY
1545 struct ev_loop *loop = ev_default_loop_ptr;
1546#endif
1547
1548 if (backend)
1549 postfork = 1; /* must be in line with ev_loop_fork */ 2093 postfork = 1; /* must be in line with ev_default_fork */
1550} 2094}
1551 2095
1552/*****************************************************************************/ 2096/*****************************************************************************/
1553 2097
1554void 2098void
1555ev_invoke (EV_P_ void *w, int revents) 2099ev_invoke (EV_P_ void *w, int revents)
1556{ 2100{
1557 EV_CB_INVOKE ((W)w, revents); 2101 EV_CB_INVOKE ((W)w, revents);
1558} 2102}
1559 2103
1560void inline_speed 2104unsigned int
1561call_pending (EV_P) 2105ev_pending_count (EV_P)
2106{
2107 int pri;
2108 unsigned int count = 0;
2109
2110 for (pri = NUMPRI; pri--; )
2111 count += pendingcnt [pri];
2112
2113 return count;
2114}
2115
2116void noinline
2117ev_invoke_pending (EV_P)
1562{ 2118{
1563 int pri; 2119 int pri;
1564 2120
1565 for (pri = NUMPRI; pri--; ) 2121 for (pri = NUMPRI; pri--; )
1566 while (pendingcnt [pri]) 2122 while (pendingcnt [pri])
1567 { 2123 {
1568 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2124 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1569 2125
1570 if (expect_true (p->w))
1571 {
1572 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1573
1574 p->w->pending = 0; 2126 p->w->pending = 0;
1575 EV_CB_INVOKE (p->w, p->events); 2127 EV_CB_INVOKE (p->w, p->events);
1576 } 2128 EV_FREQUENT_CHECK;
1577 } 2129 }
1578} 2130}
1579 2131
1580#if EV_IDLE_ENABLE 2132#if EV_IDLE_ENABLE
1581void inline_size 2133/* make idle watchers pending. this handles the "call-idle */
2134/* only when higher priorities are idle" logic */
2135inline_size void
1582idle_reify (EV_P) 2136idle_reify (EV_P)
1583{ 2137{
1584 if (expect_false (idleall)) 2138 if (expect_false (idleall))
1585 { 2139 {
1586 int pri; 2140 int pri;
… …
1598 } 2152 }
1599 } 2153 }
1600} 2154}
1601#endif 2155#endif
1602 2156
1603void inline_size 2157/* make timers pending */
2158inline_size void
1604timers_reify (EV_P) 2159timers_reify (EV_P)
1605{ 2160{
2161 EV_FREQUENT_CHECK;
2162
1606 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2163 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1607 { 2164 {
1608 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2165 do
1609
1610 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1611
1612 /* first reschedule or stop timer */
1613 if (w->repeat)
1614 { 2166 {
2167 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2168
2169 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2170
2171 /* first reschedule or stop timer */
2172 if (w->repeat)
2173 {
1615 ev_at (w) += w->repeat; 2174 ev_at (w) += w->repeat;
1616 if (ev_at (w) < mn_now) 2175 if (ev_at (w) < mn_now)
1617 ev_at (w) = mn_now; 2176 ev_at (w) = mn_now;
1618 2177
1619 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2178 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1620 2179
1621 ANHE_at_set (timers [HEAP0]); 2180 ANHE_at_cache (timers [HEAP0]);
1622 downheap (timers, timercnt, HEAP0); 2181 downheap (timers, timercnt, HEAP0);
2182 }
2183 else
2184 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2185
2186 EV_FREQUENT_CHECK;
2187 feed_reverse (EV_A_ (W)w);
1623 } 2188 }
1624 else 2189 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1625 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1626 2190
1627 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2191 feed_reverse_done (EV_A_ EV_TIMER);
1628 } 2192 }
1629} 2193}
1630 2194
1631#if EV_PERIODIC_ENABLE 2195#if EV_PERIODIC_ENABLE
1632void inline_size 2196/* make periodics pending */
2197inline_size void
1633periodics_reify (EV_P) 2198periodics_reify (EV_P)
1634{ 2199{
2200 EV_FREQUENT_CHECK;
2201
1635 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2202 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1636 { 2203 {
1637 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2204 int feed_count = 0;
1638 2205
1639 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2206 do
1640
1641 /* first reschedule or stop timer */
1642 if (w->reschedule_cb)
1643 { 2207 {
2208 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2209
2210 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2211
2212 /* first reschedule or stop timer */
2213 if (w->reschedule_cb)
2214 {
1644 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2215 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1645 2216
1646 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2217 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1647 2218
1648 ANHE_at_set (periodics [HEAP0]); 2219 ANHE_at_cache (periodics [HEAP0]);
1649 downheap (periodics, periodiccnt, HEAP0); 2220 downheap (periodics, periodiccnt, HEAP0);
2221 }
2222 else if (w->interval)
2223 {
2224 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2225 /* if next trigger time is not sufficiently in the future, put it there */
2226 /* this might happen because of floating point inexactness */
2227 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2228 {
2229 ev_at (w) += w->interval;
2230
2231 /* if interval is unreasonably low we might still have a time in the past */
2232 /* so correct this. this will make the periodic very inexact, but the user */
2233 /* has effectively asked to get triggered more often than possible */
2234 if (ev_at (w) < ev_rt_now)
2235 ev_at (w) = ev_rt_now;
2236 }
2237
2238 ANHE_at_cache (periodics [HEAP0]);
2239 downheap (periodics, periodiccnt, HEAP0);
2240 }
2241 else
2242 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2243
2244 EV_FREQUENT_CHECK;
2245 feed_reverse (EV_A_ (W)w);
1650 } 2246 }
1651 else if (w->interval) 2247 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1652 {
1653 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1654 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1655 2248
1656 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) >= ev_rt_now));
1657
1658 ANHE_at_set (periodics [HEAP0]);
1659 downheap (periodics, periodiccnt, HEAP0);
1660 }
1661 else
1662 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1663
1664 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2249 feed_reverse_done (EV_A_ EV_PERIODIC);
1665 } 2250 }
1666} 2251}
1667 2252
2253/* simply recalculate all periodics */
2254/* TODO: maybe ensure that at least one event happens when jumping forward? */
1668static void noinline 2255static void noinline
1669periodics_reschedule (EV_P) 2256periodics_reschedule (EV_P)
1670{ 2257{
1671 int i; 2258 int i;
1672 2259
… …
1678 if (w->reschedule_cb) 2265 if (w->reschedule_cb)
1679 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2266 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1680 else if (w->interval) 2267 else if (w->interval)
1681 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2268 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1682 2269
1683 ANHE_at_set (periodics [i]); 2270 ANHE_at_cache (periodics [i]);
1684 } 2271 }
1685 2272
1686 /* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */ 2273 reheap (periodics, periodiccnt);
1687 /* also, this is easy and corretc for both 2-heaps and 4-heaps */ 2274}
2275#endif
2276
2277/* adjust all timers by a given offset */
2278static void noinline
2279timers_reschedule (EV_P_ ev_tstamp adjust)
2280{
2281 int i;
2282
1688 for (i = 0; i < periodiccnt; ++i) 2283 for (i = 0; i < timercnt; ++i)
1689 upheap (periodics, i + HEAP0); 2284 {
2285 ANHE *he = timers + i + HEAP0;
2286 ANHE_w (*he)->at += adjust;
2287 ANHE_at_cache (*he);
2288 }
1690} 2289}
1691#endif
1692 2290
1693void inline_speed 2291/* fetch new monotonic and realtime times from the kernel */
2292/* also detect if there was a timejump, and act accordingly */
2293inline_speed void
1694time_update (EV_P_ ev_tstamp max_block) 2294time_update (EV_P_ ev_tstamp max_block)
1695{ 2295{
1696 int i;
1697
1698#if EV_USE_MONOTONIC 2296#if EV_USE_MONOTONIC
1699 if (expect_true (have_monotonic)) 2297 if (expect_true (have_monotonic))
1700 { 2298 {
2299 int i;
1701 ev_tstamp odiff = rtmn_diff; 2300 ev_tstamp odiff = rtmn_diff;
1702 2301
1703 mn_now = get_clock (); 2302 mn_now = get_clock ();
1704 2303
1705 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2304 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1731 ev_rt_now = ev_time (); 2330 ev_rt_now = ev_time ();
1732 mn_now = get_clock (); 2331 mn_now = get_clock ();
1733 now_floor = mn_now; 2332 now_floor = mn_now;
1734 } 2333 }
1735 2334
2335 /* no timer adjustment, as the monotonic clock doesn't jump */
2336 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1736# if EV_PERIODIC_ENABLE 2337# if EV_PERIODIC_ENABLE
1737 periodics_reschedule (EV_A); 2338 periodics_reschedule (EV_A);
1738# endif 2339# endif
1739 /* no timer adjustment, as the monotonic clock doesn't jump */
1740 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1741 } 2340 }
1742 else 2341 else
1743#endif 2342#endif
1744 { 2343 {
1745 ev_rt_now = ev_time (); 2344 ev_rt_now = ev_time ();
1746 2345
1747 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2346 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1748 { 2347 {
2348 /* adjust timers. this is easy, as the offset is the same for all of them */
2349 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1749#if EV_PERIODIC_ENABLE 2350#if EV_PERIODIC_ENABLE
1750 periodics_reschedule (EV_A); 2351 periodics_reschedule (EV_A);
1751#endif 2352#endif
1752 /* adjust timers. this is easy, as the offset is the same for all of them */
1753 for (i = 0; i < timercnt; ++i)
1754 {
1755 ANHE *he = timers + i + HEAP0;
1756 ANHE_w (*he)->at += ev_rt_now - mn_now;
1757 ANHE_at_set (*he);
1758 }
1759 } 2353 }
1760 2354
1761 mn_now = ev_rt_now; 2355 mn_now = ev_rt_now;
1762 } 2356 }
1763} 2357}
1764 2358
1765void 2359void
1766ev_ref (EV_P)
1767{
1768 ++activecnt;
1769}
1770
1771void
1772ev_unref (EV_P)
1773{
1774 --activecnt;
1775}
1776
1777static int loop_done;
1778
1779void
1780ev_loop (EV_P_ int flags) 2360ev_run (EV_P_ int flags)
1781{ 2361{
2362#if EV_FEATURE_API
2363 ++loop_depth;
2364#endif
2365
2366 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2367
1782 loop_done = EVUNLOOP_CANCEL; 2368 loop_done = EVBREAK_CANCEL;
1783 2369
1784 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2370 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1785 2371
1786 do 2372 do
1787 { 2373 {
2374#if EV_VERIFY >= 2
2375 ev_verify (EV_A);
2376#endif
2377
1788#ifndef _WIN32 2378#ifndef _WIN32
1789 if (expect_false (curpid)) /* penalise the forking check even more */ 2379 if (expect_false (curpid)) /* penalise the forking check even more */
1790 if (expect_false (getpid () != curpid)) 2380 if (expect_false (getpid () != curpid))
1791 { 2381 {
1792 curpid = getpid (); 2382 curpid = getpid ();
… …
1798 /* we might have forked, so queue fork handlers */ 2388 /* we might have forked, so queue fork handlers */
1799 if (expect_false (postfork)) 2389 if (expect_false (postfork))
1800 if (forkcnt) 2390 if (forkcnt)
1801 { 2391 {
1802 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2392 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1803 call_pending (EV_A); 2393 EV_INVOKE_PENDING;
1804 } 2394 }
1805#endif 2395#endif
1806 2396
2397#if EV_PREPARE_ENABLE
1807 /* queue prepare watchers (and execute them) */ 2398 /* queue prepare watchers (and execute them) */
1808 if (expect_false (preparecnt)) 2399 if (expect_false (preparecnt))
1809 { 2400 {
1810 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2401 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1811 call_pending (EV_A); 2402 EV_INVOKE_PENDING;
1812 } 2403 }
2404#endif
1813 2405
1814 if (expect_false (!activecnt)) 2406 if (expect_false (loop_done))
1815 break; 2407 break;
1816 2408
1817 /* we might have forked, so reify kernel state if necessary */ 2409 /* we might have forked, so reify kernel state if necessary */
1818 if (expect_false (postfork)) 2410 if (expect_false (postfork))
1819 loop_fork (EV_A); 2411 loop_fork (EV_A);
… …
1824 /* calculate blocking time */ 2416 /* calculate blocking time */
1825 { 2417 {
1826 ev_tstamp waittime = 0.; 2418 ev_tstamp waittime = 0.;
1827 ev_tstamp sleeptime = 0.; 2419 ev_tstamp sleeptime = 0.;
1828 2420
2421 /* remember old timestamp for io_blocktime calculation */
2422 ev_tstamp prev_mn_now = mn_now;
2423
2424 /* update time to cancel out callback processing overhead */
2425 time_update (EV_A_ 1e100);
2426
1829 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2427 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1830 { 2428 {
1831 /* update time to cancel out callback processing overhead */
1832 time_update (EV_A_ 1e100);
1833
1834 waittime = MAX_BLOCKTIME; 2429 waittime = MAX_BLOCKTIME;
1835 2430
1836 if (timercnt) 2431 if (timercnt)
1837 { 2432 {
1838 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2433 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1845 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2440 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1846 if (waittime > to) waittime = to; 2441 if (waittime > to) waittime = to;
1847 } 2442 }
1848#endif 2443#endif
1849 2444
2445 /* don't let timeouts decrease the waittime below timeout_blocktime */
1850 if (expect_false (waittime < timeout_blocktime)) 2446 if (expect_false (waittime < timeout_blocktime))
1851 waittime = timeout_blocktime; 2447 waittime = timeout_blocktime;
1852 2448
1853 sleeptime = waittime - backend_fudge; 2449 /* extra check because io_blocktime is commonly 0 */
1854
1855 if (expect_true (sleeptime > io_blocktime)) 2450 if (expect_false (io_blocktime))
1856 sleeptime = io_blocktime;
1857
1858 if (sleeptime)
1859 { 2451 {
2452 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2453
2454 if (sleeptime > waittime - backend_fudge)
2455 sleeptime = waittime - backend_fudge;
2456
2457 if (expect_true (sleeptime > 0.))
2458 {
1860 ev_sleep (sleeptime); 2459 ev_sleep (sleeptime);
1861 waittime -= sleeptime; 2460 waittime -= sleeptime;
2461 }
1862 } 2462 }
1863 } 2463 }
1864 2464
2465#if EV_FEATURE_API
1865 ++loop_count; 2466 ++loop_count;
2467#endif
2468 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1866 backend_poll (EV_A_ waittime); 2469 backend_poll (EV_A_ waittime);
2470 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1867 2471
1868 /* update ev_rt_now, do magic */ 2472 /* update ev_rt_now, do magic */
1869 time_update (EV_A_ waittime + sleeptime); 2473 time_update (EV_A_ waittime + sleeptime);
1870 } 2474 }
1871 2475
… …
1878#if EV_IDLE_ENABLE 2482#if EV_IDLE_ENABLE
1879 /* queue idle watchers unless other events are pending */ 2483 /* queue idle watchers unless other events are pending */
1880 idle_reify (EV_A); 2484 idle_reify (EV_A);
1881#endif 2485#endif
1882 2486
2487#if EV_CHECK_ENABLE
1883 /* queue check watchers, to be executed first */ 2488 /* queue check watchers, to be executed first */
1884 if (expect_false (checkcnt)) 2489 if (expect_false (checkcnt))
1885 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2490 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2491#endif
1886 2492
1887 call_pending (EV_A); 2493 EV_INVOKE_PENDING;
1888 } 2494 }
1889 while (expect_true ( 2495 while (expect_true (
1890 activecnt 2496 activecnt
1891 && !loop_done 2497 && !loop_done
1892 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2498 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1893 )); 2499 ));
1894 2500
1895 if (loop_done == EVUNLOOP_ONE) 2501 if (loop_done == EVBREAK_ONE)
1896 loop_done = EVUNLOOP_CANCEL; 2502 loop_done = EVBREAK_CANCEL;
1897}
1898 2503
2504#if EV_FEATURE_API
2505 --loop_depth;
2506#endif
2507}
2508
1899void 2509void
1900ev_unloop (EV_P_ int how) 2510ev_break (EV_P_ int how)
1901{ 2511{
1902 loop_done = how; 2512 loop_done = how;
1903} 2513}
1904 2514
2515void
2516ev_ref (EV_P)
2517{
2518 ++activecnt;
2519}
2520
2521void
2522ev_unref (EV_P)
2523{
2524 --activecnt;
2525}
2526
2527void
2528ev_now_update (EV_P)
2529{
2530 time_update (EV_A_ 1e100);
2531}
2532
2533void
2534ev_suspend (EV_P)
2535{
2536 ev_now_update (EV_A);
2537}
2538
2539void
2540ev_resume (EV_P)
2541{
2542 ev_tstamp mn_prev = mn_now;
2543
2544 ev_now_update (EV_A);
2545 timers_reschedule (EV_A_ mn_now - mn_prev);
2546#if EV_PERIODIC_ENABLE
2547 /* TODO: really do this? */
2548 periodics_reschedule (EV_A);
2549#endif
2550}
2551
1905/*****************************************************************************/ 2552/*****************************************************************************/
2553/* singly-linked list management, used when the expected list length is short */
1906 2554
1907void inline_size 2555inline_size void
1908wlist_add (WL *head, WL elem) 2556wlist_add (WL *head, WL elem)
1909{ 2557{
1910 elem->next = *head; 2558 elem->next = *head;
1911 *head = elem; 2559 *head = elem;
1912} 2560}
1913 2561
1914void inline_size 2562inline_size void
1915wlist_del (WL *head, WL elem) 2563wlist_del (WL *head, WL elem)
1916{ 2564{
1917 while (*head) 2565 while (*head)
1918 { 2566 {
1919 if (*head == elem) 2567 if (expect_true (*head == elem))
1920 { 2568 {
1921 *head = elem->next; 2569 *head = elem->next;
1922 return; 2570 break;
1923 } 2571 }
1924 2572
1925 head = &(*head)->next; 2573 head = &(*head)->next;
1926 } 2574 }
1927} 2575}
1928 2576
1929void inline_speed 2577/* internal, faster, version of ev_clear_pending */
2578inline_speed void
1930clear_pending (EV_P_ W w) 2579clear_pending (EV_P_ W w)
1931{ 2580{
1932 if (w->pending) 2581 if (w->pending)
1933 { 2582 {
1934 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2583 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1935 w->pending = 0; 2584 w->pending = 0;
1936 } 2585 }
1937} 2586}
1938 2587
1939int 2588int
… …
1943 int pending = w_->pending; 2592 int pending = w_->pending;
1944 2593
1945 if (expect_true (pending)) 2594 if (expect_true (pending))
1946 { 2595 {
1947 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2596 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2597 p->w = (W)&pending_w;
1948 w_->pending = 0; 2598 w_->pending = 0;
1949 p->w = 0;
1950 return p->events; 2599 return p->events;
1951 } 2600 }
1952 else 2601 else
1953 return 0; 2602 return 0;
1954} 2603}
1955 2604
1956void inline_size 2605inline_size void
1957pri_adjust (EV_P_ W w) 2606pri_adjust (EV_P_ W w)
1958{ 2607{
1959 int pri = w->priority; 2608 int pri = ev_priority (w);
1960 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2609 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1961 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2610 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1962 w->priority = pri; 2611 ev_set_priority (w, pri);
1963} 2612}
1964 2613
1965void inline_speed 2614inline_speed void
1966ev_start (EV_P_ W w, int active) 2615ev_start (EV_P_ W w, int active)
1967{ 2616{
1968 pri_adjust (EV_A_ w); 2617 pri_adjust (EV_A_ w);
1969 w->active = active; 2618 w->active = active;
1970 ev_ref (EV_A); 2619 ev_ref (EV_A);
1971} 2620}
1972 2621
1973void inline_size 2622inline_size void
1974ev_stop (EV_P_ W w) 2623ev_stop (EV_P_ W w)
1975{ 2624{
1976 ev_unref (EV_A); 2625 ev_unref (EV_A);
1977 w->active = 0; 2626 w->active = 0;
1978} 2627}
… …
1985 int fd = w->fd; 2634 int fd = w->fd;
1986 2635
1987 if (expect_false (ev_is_active (w))) 2636 if (expect_false (ev_is_active (w)))
1988 return; 2637 return;
1989 2638
1990 assert (("ev_io_start called with negative fd", fd >= 0)); 2639 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2640 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2641
2642 EV_FREQUENT_CHECK;
1991 2643
1992 ev_start (EV_A_ (W)w, 1); 2644 ev_start (EV_A_ (W)w, 1);
1993 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2645 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1994 wlist_add (&anfds[fd].head, (WL)w); 2646 wlist_add (&anfds[fd].head, (WL)w);
1995 2647
1996 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2648 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1997 w->events &= ~EV_IOFDSET; 2649 w->events &= ~EV__IOFDSET;
2650
2651 EV_FREQUENT_CHECK;
1998} 2652}
1999 2653
2000void noinline 2654void noinline
2001ev_io_stop (EV_P_ ev_io *w) 2655ev_io_stop (EV_P_ ev_io *w)
2002{ 2656{
2003 clear_pending (EV_A_ (W)w); 2657 clear_pending (EV_A_ (W)w);
2004 if (expect_false (!ev_is_active (w))) 2658 if (expect_false (!ev_is_active (w)))
2005 return; 2659 return;
2006 2660
2007 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2661 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2662
2663 EV_FREQUENT_CHECK;
2008 2664
2009 wlist_del (&anfds[w->fd].head, (WL)w); 2665 wlist_del (&anfds[w->fd].head, (WL)w);
2010 ev_stop (EV_A_ (W)w); 2666 ev_stop (EV_A_ (W)w);
2011 2667
2012 fd_change (EV_A_ w->fd, 1); 2668 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2669
2670 EV_FREQUENT_CHECK;
2013} 2671}
2014 2672
2015void noinline 2673void noinline
2016ev_timer_start (EV_P_ ev_timer *w) 2674ev_timer_start (EV_P_ ev_timer *w)
2017{ 2675{
2018 if (expect_false (ev_is_active (w))) 2676 if (expect_false (ev_is_active (w)))
2019 return; 2677 return;
2020 2678
2021 ev_at (w) += mn_now; 2679 ev_at (w) += mn_now;
2022 2680
2023 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2681 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2024 2682
2683 EV_FREQUENT_CHECK;
2684
2685 ++timercnt;
2025 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2686 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2026 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 2687 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2027 ANHE_w (timers [ev_active (w)]) = (WT)w; 2688 ANHE_w (timers [ev_active (w)]) = (WT)w;
2028 ANHE_at_set (timers [ev_active (w)]); 2689 ANHE_at_cache (timers [ev_active (w)]);
2029 upheap (timers, ev_active (w)); 2690 upheap (timers, ev_active (w));
2030 2691
2692 EV_FREQUENT_CHECK;
2693
2031 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2694 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2032} 2695}
2033 2696
2034void noinline 2697void noinline
2035ev_timer_stop (EV_P_ ev_timer *w) 2698ev_timer_stop (EV_P_ ev_timer *w)
2036{ 2699{
2037 clear_pending (EV_A_ (W)w); 2700 clear_pending (EV_A_ (W)w);
2038 if (expect_false (!ev_is_active (w))) 2701 if (expect_false (!ev_is_active (w)))
2039 return; 2702 return;
2040 2703
2704 EV_FREQUENT_CHECK;
2705
2041 { 2706 {
2042 int active = ev_active (w); 2707 int active = ev_active (w);
2043 2708
2044 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2709 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2045 2710
2711 --timercnt;
2712
2046 if (expect_true (active < timercnt + HEAP0 - 1)) 2713 if (expect_true (active < timercnt + HEAP0))
2047 { 2714 {
2048 timers [active] = timers [timercnt + HEAP0 - 1]; 2715 timers [active] = timers [timercnt + HEAP0];
2049 adjustheap (timers, timercnt, active); 2716 adjustheap (timers, timercnt, active);
2050 } 2717 }
2051
2052 --timercnt;
2053 } 2718 }
2054 2719
2055 ev_at (w) -= mn_now; 2720 ev_at (w) -= mn_now;
2056 2721
2057 ev_stop (EV_A_ (W)w); 2722 ev_stop (EV_A_ (W)w);
2723
2724 EV_FREQUENT_CHECK;
2058} 2725}
2059 2726
2060void noinline 2727void noinline
2061ev_timer_again (EV_P_ ev_timer *w) 2728ev_timer_again (EV_P_ ev_timer *w)
2062{ 2729{
2730 EV_FREQUENT_CHECK;
2731
2063 if (ev_is_active (w)) 2732 if (ev_is_active (w))
2064 { 2733 {
2065 if (w->repeat) 2734 if (w->repeat)
2066 { 2735 {
2067 ev_at (w) = mn_now + w->repeat; 2736 ev_at (w) = mn_now + w->repeat;
2068 ANHE_at_set (timers [ev_active (w)]); 2737 ANHE_at_cache (timers [ev_active (w)]);
2069 adjustheap (timers, timercnt, ev_active (w)); 2738 adjustheap (timers, timercnt, ev_active (w));
2070 } 2739 }
2071 else 2740 else
2072 ev_timer_stop (EV_A_ w); 2741 ev_timer_stop (EV_A_ w);
2073 } 2742 }
2074 else if (w->repeat) 2743 else if (w->repeat)
2075 { 2744 {
2076 ev_at (w) = w->repeat; 2745 ev_at (w) = w->repeat;
2077 ev_timer_start (EV_A_ w); 2746 ev_timer_start (EV_A_ w);
2078 } 2747 }
2748
2749 EV_FREQUENT_CHECK;
2750}
2751
2752ev_tstamp
2753ev_timer_remaining (EV_P_ ev_timer *w)
2754{
2755 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2079} 2756}
2080 2757
2081#if EV_PERIODIC_ENABLE 2758#if EV_PERIODIC_ENABLE
2082void noinline 2759void noinline
2083ev_periodic_start (EV_P_ ev_periodic *w) 2760ev_periodic_start (EV_P_ ev_periodic *w)
… …
2087 2764
2088 if (w->reschedule_cb) 2765 if (w->reschedule_cb)
2089 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2766 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2090 else if (w->interval) 2767 else if (w->interval)
2091 { 2768 {
2092 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2769 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2093 /* this formula differs from the one in periodic_reify because we do not always round up */ 2770 /* this formula differs from the one in periodic_reify because we do not always round up */
2094 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2771 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2095 } 2772 }
2096 else 2773 else
2097 ev_at (w) = w->offset; 2774 ev_at (w) = w->offset;
2098 2775
2776 EV_FREQUENT_CHECK;
2777
2778 ++periodiccnt;
2099 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2779 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2100 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 2780 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2101 ANHE_w (periodics [ev_active (w)]) = (WT)w; 2781 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2102 ANHE_at_set (periodics [ev_active (w)]); 2782 ANHE_at_cache (periodics [ev_active (w)]);
2103 upheap (periodics, ev_active (w)); 2783 upheap (periodics, ev_active (w));
2104 2784
2785 EV_FREQUENT_CHECK;
2786
2105 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2787 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2106} 2788}
2107 2789
2108void noinline 2790void noinline
2109ev_periodic_stop (EV_P_ ev_periodic *w) 2791ev_periodic_stop (EV_P_ ev_periodic *w)
2110{ 2792{
2111 clear_pending (EV_A_ (W)w); 2793 clear_pending (EV_A_ (W)w);
2112 if (expect_false (!ev_is_active (w))) 2794 if (expect_false (!ev_is_active (w)))
2113 return; 2795 return;
2114 2796
2797 EV_FREQUENT_CHECK;
2798
2115 { 2799 {
2116 int active = ev_active (w); 2800 int active = ev_active (w);
2117 2801
2118 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2802 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2119 2803
2804 --periodiccnt;
2805
2120 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2806 if (expect_true (active < periodiccnt + HEAP0))
2121 { 2807 {
2122 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2808 periodics [active] = periodics [periodiccnt + HEAP0];
2123 adjustheap (periodics, periodiccnt, active); 2809 adjustheap (periodics, periodiccnt, active);
2124 } 2810 }
2125
2126 --periodiccnt;
2127 } 2811 }
2128 2812
2129 ev_stop (EV_A_ (W)w); 2813 ev_stop (EV_A_ (W)w);
2814
2815 EV_FREQUENT_CHECK;
2130} 2816}
2131 2817
2132void noinline 2818void noinline
2133ev_periodic_again (EV_P_ ev_periodic *w) 2819ev_periodic_again (EV_P_ ev_periodic *w)
2134{ 2820{
… …
2140 2826
2141#ifndef SA_RESTART 2827#ifndef SA_RESTART
2142# define SA_RESTART 0 2828# define SA_RESTART 0
2143#endif 2829#endif
2144 2830
2831#if EV_SIGNAL_ENABLE
2832
2145void noinline 2833void noinline
2146ev_signal_start (EV_P_ ev_signal *w) 2834ev_signal_start (EV_P_ ev_signal *w)
2147{ 2835{
2148#if EV_MULTIPLICITY
2149 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2150#endif
2151 if (expect_false (ev_is_active (w))) 2836 if (expect_false (ev_is_active (w)))
2152 return; 2837 return;
2153 2838
2154 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2839 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2155 2840
2156 evpipe_init (EV_A); 2841#if EV_MULTIPLICITY
2842 assert (("libev: a signal must not be attached to two different loops",
2843 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2157 2844
2845 signals [w->signum - 1].loop = EV_A;
2846#endif
2847
2848 EV_FREQUENT_CHECK;
2849
2850#if EV_USE_SIGNALFD
2851 if (sigfd == -2)
2158 { 2852 {
2159#ifndef _WIN32 2853 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2160 sigset_t full, prev; 2854 if (sigfd < 0 && errno == EINVAL)
2161 sigfillset (&full); 2855 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2162 sigprocmask (SIG_SETMASK, &full, &prev);
2163#endif
2164 2856
2165 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2857 if (sigfd >= 0)
2858 {
2859 fd_intern (sigfd); /* doing it twice will not hurt */
2166 2860
2167#ifndef _WIN32 2861 sigemptyset (&sigfd_set);
2168 sigprocmask (SIG_SETMASK, &prev, 0); 2862
2169#endif 2863 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2864 ev_set_priority (&sigfd_w, EV_MAXPRI);
2865 ev_io_start (EV_A_ &sigfd_w);
2866 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2867 }
2170 } 2868 }
2869
2870 if (sigfd >= 0)
2871 {
2872 /* TODO: check .head */
2873 sigaddset (&sigfd_set, w->signum);
2874 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2875
2876 signalfd (sigfd, &sigfd_set, 0);
2877 }
2878#endif
2171 2879
2172 ev_start (EV_A_ (W)w, 1); 2880 ev_start (EV_A_ (W)w, 1);
2173 wlist_add (&signals [w->signum - 1].head, (WL)w); 2881 wlist_add (&signals [w->signum - 1].head, (WL)w);
2174 2882
2175 if (!((WL)w)->next) 2883 if (!((WL)w)->next)
2884# if EV_USE_SIGNALFD
2885 if (sigfd < 0) /*TODO*/
2886# endif
2176 { 2887 {
2177#if _WIN32 2888# ifdef _WIN32
2889 evpipe_init (EV_A);
2890
2178 signal (w->signum, ev_sighandler); 2891 signal (w->signum, ev_sighandler);
2179#else 2892# else
2180 struct sigaction sa; 2893 struct sigaction sa;
2894
2895 evpipe_init (EV_A);
2896
2181 sa.sa_handler = ev_sighandler; 2897 sa.sa_handler = ev_sighandler;
2182 sigfillset (&sa.sa_mask); 2898 sigfillset (&sa.sa_mask);
2183 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2899 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2184 sigaction (w->signum, &sa, 0); 2900 sigaction (w->signum, &sa, 0);
2901
2902 if (origflags & EVFLAG_NOSIGMASK)
2903 {
2904 sigemptyset (&sa.sa_mask);
2905 sigaddset (&sa.sa_mask, w->signum);
2906 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2907 }
2185#endif 2908#endif
2186 } 2909 }
2910
2911 EV_FREQUENT_CHECK;
2187} 2912}
2188 2913
2189void noinline 2914void noinline
2190ev_signal_stop (EV_P_ ev_signal *w) 2915ev_signal_stop (EV_P_ ev_signal *w)
2191{ 2916{
2192 clear_pending (EV_A_ (W)w); 2917 clear_pending (EV_A_ (W)w);
2193 if (expect_false (!ev_is_active (w))) 2918 if (expect_false (!ev_is_active (w)))
2194 return; 2919 return;
2195 2920
2921 EV_FREQUENT_CHECK;
2922
2196 wlist_del (&signals [w->signum - 1].head, (WL)w); 2923 wlist_del (&signals [w->signum - 1].head, (WL)w);
2197 ev_stop (EV_A_ (W)w); 2924 ev_stop (EV_A_ (W)w);
2198 2925
2199 if (!signals [w->signum - 1].head) 2926 if (!signals [w->signum - 1].head)
2927 {
2928#if EV_MULTIPLICITY
2929 signals [w->signum - 1].loop = 0; /* unattach from signal */
2930#endif
2931#if EV_USE_SIGNALFD
2932 if (sigfd >= 0)
2933 {
2934 sigset_t ss;
2935
2936 sigemptyset (&ss);
2937 sigaddset (&ss, w->signum);
2938 sigdelset (&sigfd_set, w->signum);
2939
2940 signalfd (sigfd, &sigfd_set, 0);
2941 sigprocmask (SIG_UNBLOCK, &ss, 0);
2942 }
2943 else
2944#endif
2200 signal (w->signum, SIG_DFL); 2945 signal (w->signum, SIG_DFL);
2946 }
2947
2948 EV_FREQUENT_CHECK;
2201} 2949}
2950
2951#endif
2952
2953#if EV_CHILD_ENABLE
2202 2954
2203void 2955void
2204ev_child_start (EV_P_ ev_child *w) 2956ev_child_start (EV_P_ ev_child *w)
2205{ 2957{
2206#if EV_MULTIPLICITY 2958#if EV_MULTIPLICITY
2207 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2959 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2208#endif 2960#endif
2209 if (expect_false (ev_is_active (w))) 2961 if (expect_false (ev_is_active (w)))
2210 return; 2962 return;
2211 2963
2964 EV_FREQUENT_CHECK;
2965
2212 ev_start (EV_A_ (W)w, 1); 2966 ev_start (EV_A_ (W)w, 1);
2213 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2967 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2968
2969 EV_FREQUENT_CHECK;
2214} 2970}
2215 2971
2216void 2972void
2217ev_child_stop (EV_P_ ev_child *w) 2973ev_child_stop (EV_P_ ev_child *w)
2218{ 2974{
2219 clear_pending (EV_A_ (W)w); 2975 clear_pending (EV_A_ (W)w);
2220 if (expect_false (!ev_is_active (w))) 2976 if (expect_false (!ev_is_active (w)))
2221 return; 2977 return;
2222 2978
2979 EV_FREQUENT_CHECK;
2980
2223 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2981 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2224 ev_stop (EV_A_ (W)w); 2982 ev_stop (EV_A_ (W)w);
2983
2984 EV_FREQUENT_CHECK;
2225} 2985}
2986
2987#endif
2226 2988
2227#if EV_STAT_ENABLE 2989#if EV_STAT_ENABLE
2228 2990
2229# ifdef _WIN32 2991# ifdef _WIN32
2230# undef lstat 2992# undef lstat
2231# define lstat(a,b) _stati64 (a,b) 2993# define lstat(a,b) _stati64 (a,b)
2232# endif 2994# endif
2233 2995
2234#define DEF_STAT_INTERVAL 5.0074891 2996#define DEF_STAT_INTERVAL 5.0074891
2997#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2235#define MIN_STAT_INTERVAL 0.1074891 2998#define MIN_STAT_INTERVAL 0.1074891
2236 2999
2237static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3000static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2238 3001
2239#if EV_USE_INOTIFY 3002#if EV_USE_INOTIFY
2240# define EV_INOTIFY_BUFSIZE 8192 3003
3004/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3005# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2241 3006
2242static void noinline 3007static void noinline
2243infy_add (EV_P_ ev_stat *w) 3008infy_add (EV_P_ ev_stat *w)
2244{ 3009{
2245 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); 3010 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);
2246 3011
2247 if (w->wd < 0) 3012 if (w->wd >= 0)
3013 {
3014 struct statfs sfs;
3015
3016 /* now local changes will be tracked by inotify, but remote changes won't */
3017 /* unless the filesystem is known to be local, we therefore still poll */
3018 /* also do poll on <2.6.25, but with normal frequency */
3019
3020 if (!fs_2625)
3021 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3022 else if (!statfs (w->path, &sfs)
3023 && (sfs.f_type == 0x1373 /* devfs */
3024 || sfs.f_type == 0xEF53 /* ext2/3 */
3025 || sfs.f_type == 0x3153464a /* jfs */
3026 || sfs.f_type == 0x52654973 /* reiser3 */
3027 || sfs.f_type == 0x01021994 /* tempfs */
3028 || sfs.f_type == 0x58465342 /* xfs */))
3029 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3030 else
3031 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2248 { 3032 }
2249 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3033 else
3034 {
3035 /* can't use inotify, continue to stat */
3036 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2250 3037
2251 /* monitor some parent directory for speedup hints */ 3038 /* if path is not there, monitor some parent directory for speedup hints */
2252 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3039 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2253 /* but an efficiency issue only */ 3040 /* but an efficiency issue only */
2254 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3041 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2255 { 3042 {
2256 char path [4096]; 3043 char path [4096];
2257 strcpy (path, w->path); 3044 strcpy (path, w->path);
… …
2261 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3048 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2262 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3049 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2263 3050
2264 char *pend = strrchr (path, '/'); 3051 char *pend = strrchr (path, '/');
2265 3052
2266 if (!pend) 3053 if (!pend || pend == path)
2267 break; /* whoops, no '/', complain to your admin */ 3054 break;
2268 3055
2269 *pend = 0; 3056 *pend = 0;
2270 w->wd = inotify_add_watch (fs_fd, path, mask); 3057 w->wd = inotify_add_watch (fs_fd, path, mask);
2271 } 3058 }
2272 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3059 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2273 } 3060 }
2274 } 3061 }
2275 else
2276 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2277 3062
2278 if (w->wd >= 0) 3063 if (w->wd >= 0)
2279 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3064 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3065
3066 /* now re-arm timer, if required */
3067 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3068 ev_timer_again (EV_A_ &w->timer);
3069 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2280} 3070}
2281 3071
2282static void noinline 3072static void noinline
2283infy_del (EV_P_ ev_stat *w) 3073infy_del (EV_P_ ev_stat *w)
2284{ 3074{
… …
2287 3077
2288 if (wd < 0) 3078 if (wd < 0)
2289 return; 3079 return;
2290 3080
2291 w->wd = -2; 3081 w->wd = -2;
2292 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3082 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2293 wlist_del (&fs_hash [slot].head, (WL)w); 3083 wlist_del (&fs_hash [slot].head, (WL)w);
2294 3084
2295 /* remove this watcher, if others are watching it, they will rearm */ 3085 /* remove this watcher, if others are watching it, they will rearm */
2296 inotify_rm_watch (fs_fd, wd); 3086 inotify_rm_watch (fs_fd, wd);
2297} 3087}
2298 3088
2299static void noinline 3089static void noinline
2300infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3090infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2301{ 3091{
2302 if (slot < 0) 3092 if (slot < 0)
2303 /* overflow, need to check for all hahs slots */ 3093 /* overflow, need to check for all hash slots */
2304 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3094 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2305 infy_wd (EV_A_ slot, wd, ev); 3095 infy_wd (EV_A_ slot, wd, ev);
2306 else 3096 else
2307 { 3097 {
2308 WL w_; 3098 WL w_;
2309 3099
2310 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3100 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2311 { 3101 {
2312 ev_stat *w = (ev_stat *)w_; 3102 ev_stat *w = (ev_stat *)w_;
2313 w_ = w_->next; /* lets us remove this watcher and all before it */ 3103 w_ = w_->next; /* lets us remove this watcher and all before it */
2314 3104
2315 if (w->wd == wd || wd == -1) 3105 if (w->wd == wd || wd == -1)
2316 { 3106 {
2317 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3107 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2318 { 3108 {
3109 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2319 w->wd = -1; 3110 w->wd = -1;
2320 infy_add (EV_A_ w); /* re-add, no matter what */ 3111 infy_add (EV_A_ w); /* re-add, no matter what */
2321 } 3112 }
2322 3113
2323 stat_timer_cb (EV_A_ &w->timer, 0); 3114 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2328 3119
2329static void 3120static void
2330infy_cb (EV_P_ ev_io *w, int revents) 3121infy_cb (EV_P_ ev_io *w, int revents)
2331{ 3122{
2332 char buf [EV_INOTIFY_BUFSIZE]; 3123 char buf [EV_INOTIFY_BUFSIZE];
2333 struct inotify_event *ev = (struct inotify_event *)buf;
2334 int ofs; 3124 int ofs;
2335 int len = read (fs_fd, buf, sizeof (buf)); 3125 int len = read (fs_fd, buf, sizeof (buf));
2336 3126
2337 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3127 for (ofs = 0; ofs < len; )
3128 {
3129 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2338 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3130 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3131 ofs += sizeof (struct inotify_event) + ev->len;
3132 }
2339} 3133}
2340 3134
2341void inline_size 3135inline_size void
3136ev_check_2625 (EV_P)
3137{
3138 /* kernels < 2.6.25 are borked
3139 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3140 */
3141 if (ev_linux_version () < 0x020619)
3142 return;
3143
3144 fs_2625 = 1;
3145}
3146
3147inline_size int
3148infy_newfd (void)
3149{
3150#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3151 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3152 if (fd >= 0)
3153 return fd;
3154#endif
3155 return inotify_init ();
3156}
3157
3158inline_size void
2342infy_init (EV_P) 3159infy_init (EV_P)
2343{ 3160{
2344 if (fs_fd != -2) 3161 if (fs_fd != -2)
2345 return; 3162 return;
2346 3163
3164 fs_fd = -1;
3165
3166 ev_check_2625 (EV_A);
3167
2347 fs_fd = inotify_init (); 3168 fs_fd = infy_newfd ();
2348 3169
2349 if (fs_fd >= 0) 3170 if (fs_fd >= 0)
2350 { 3171 {
3172 fd_intern (fs_fd);
2351 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3173 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2352 ev_set_priority (&fs_w, EV_MAXPRI); 3174 ev_set_priority (&fs_w, EV_MAXPRI);
2353 ev_io_start (EV_A_ &fs_w); 3175 ev_io_start (EV_A_ &fs_w);
3176 ev_unref (EV_A);
2354 } 3177 }
2355} 3178}
2356 3179
2357void inline_size 3180inline_size void
2358infy_fork (EV_P) 3181infy_fork (EV_P)
2359{ 3182{
2360 int slot; 3183 int slot;
2361 3184
2362 if (fs_fd < 0) 3185 if (fs_fd < 0)
2363 return; 3186 return;
2364 3187
3188 ev_ref (EV_A);
3189 ev_io_stop (EV_A_ &fs_w);
2365 close (fs_fd); 3190 close (fs_fd);
2366 fs_fd = inotify_init (); 3191 fs_fd = infy_newfd ();
2367 3192
3193 if (fs_fd >= 0)
3194 {
3195 fd_intern (fs_fd);
3196 ev_io_set (&fs_w, fs_fd, EV_READ);
3197 ev_io_start (EV_A_ &fs_w);
3198 ev_unref (EV_A);
3199 }
3200
2368 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3201 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2369 { 3202 {
2370 WL w_ = fs_hash [slot].head; 3203 WL w_ = fs_hash [slot].head;
2371 fs_hash [slot].head = 0; 3204 fs_hash [slot].head = 0;
2372 3205
2373 while (w_) 3206 while (w_)
… …
2378 w->wd = -1; 3211 w->wd = -1;
2379 3212
2380 if (fs_fd >= 0) 3213 if (fs_fd >= 0)
2381 infy_add (EV_A_ w); /* re-add, no matter what */ 3214 infy_add (EV_A_ w); /* re-add, no matter what */
2382 else 3215 else
3216 {
3217 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3218 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2383 ev_timer_start (EV_A_ &w->timer); 3219 ev_timer_again (EV_A_ &w->timer);
3220 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3221 }
2384 } 3222 }
2385
2386 } 3223 }
2387} 3224}
2388 3225
3226#endif
3227
3228#ifdef _WIN32
3229# define EV_LSTAT(p,b) _stati64 (p, b)
3230#else
3231# define EV_LSTAT(p,b) lstat (p, b)
2389#endif 3232#endif
2390 3233
2391void 3234void
2392ev_stat_stat (EV_P_ ev_stat *w) 3235ev_stat_stat (EV_P_ ev_stat *w)
2393{ 3236{
… …
2400static void noinline 3243static void noinline
2401stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3244stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2402{ 3245{
2403 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3246 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2404 3247
2405 /* we copy this here each the time so that */ 3248 ev_statdata prev = w->attr;
2406 /* prev has the old value when the callback gets invoked */
2407 w->prev = w->attr;
2408 ev_stat_stat (EV_A_ w); 3249 ev_stat_stat (EV_A_ w);
2409 3250
2410 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3251 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2411 if ( 3252 if (
2412 w->prev.st_dev != w->attr.st_dev 3253 prev.st_dev != w->attr.st_dev
2413 || w->prev.st_ino != w->attr.st_ino 3254 || prev.st_ino != w->attr.st_ino
2414 || w->prev.st_mode != w->attr.st_mode 3255 || prev.st_mode != w->attr.st_mode
2415 || w->prev.st_nlink != w->attr.st_nlink 3256 || prev.st_nlink != w->attr.st_nlink
2416 || w->prev.st_uid != w->attr.st_uid 3257 || prev.st_uid != w->attr.st_uid
2417 || w->prev.st_gid != w->attr.st_gid 3258 || prev.st_gid != w->attr.st_gid
2418 || w->prev.st_rdev != w->attr.st_rdev 3259 || prev.st_rdev != w->attr.st_rdev
2419 || w->prev.st_size != w->attr.st_size 3260 || prev.st_size != w->attr.st_size
2420 || w->prev.st_atime != w->attr.st_atime 3261 || prev.st_atime != w->attr.st_atime
2421 || w->prev.st_mtime != w->attr.st_mtime 3262 || prev.st_mtime != w->attr.st_mtime
2422 || w->prev.st_ctime != w->attr.st_ctime 3263 || prev.st_ctime != w->attr.st_ctime
2423 ) { 3264 ) {
3265 /* we only update w->prev on actual differences */
3266 /* in case we test more often than invoke the callback, */
3267 /* to ensure that prev is always different to attr */
3268 w->prev = prev;
3269
2424 #if EV_USE_INOTIFY 3270 #if EV_USE_INOTIFY
3271 if (fs_fd >= 0)
3272 {
2425 infy_del (EV_A_ w); 3273 infy_del (EV_A_ w);
2426 infy_add (EV_A_ w); 3274 infy_add (EV_A_ w);
2427 ev_stat_stat (EV_A_ w); /* avoid race... */ 3275 ev_stat_stat (EV_A_ w); /* avoid race... */
3276 }
2428 #endif 3277 #endif
2429 3278
2430 ev_feed_event (EV_A_ w, EV_STAT); 3279 ev_feed_event (EV_A_ w, EV_STAT);
2431 } 3280 }
2432} 3281}
… …
2435ev_stat_start (EV_P_ ev_stat *w) 3284ev_stat_start (EV_P_ ev_stat *w)
2436{ 3285{
2437 if (expect_false (ev_is_active (w))) 3286 if (expect_false (ev_is_active (w)))
2438 return; 3287 return;
2439 3288
2440 /* since we use memcmp, we need to clear any padding data etc. */
2441 memset (&w->prev, 0, sizeof (ev_statdata));
2442 memset (&w->attr, 0, sizeof (ev_statdata));
2443
2444 ev_stat_stat (EV_A_ w); 3289 ev_stat_stat (EV_A_ w);
2445 3290
3291 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2446 if (w->interval < MIN_STAT_INTERVAL) 3292 w->interval = MIN_STAT_INTERVAL;
2447 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2448 3293
2449 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3294 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2450 ev_set_priority (&w->timer, ev_priority (w)); 3295 ev_set_priority (&w->timer, ev_priority (w));
2451 3296
2452#if EV_USE_INOTIFY 3297#if EV_USE_INOTIFY
2453 infy_init (EV_A); 3298 infy_init (EV_A);
2454 3299
2455 if (fs_fd >= 0) 3300 if (fs_fd >= 0)
2456 infy_add (EV_A_ w); 3301 infy_add (EV_A_ w);
2457 else 3302 else
2458#endif 3303#endif
3304 {
2459 ev_timer_start (EV_A_ &w->timer); 3305 ev_timer_again (EV_A_ &w->timer);
3306 ev_unref (EV_A);
3307 }
2460 3308
2461 ev_start (EV_A_ (W)w, 1); 3309 ev_start (EV_A_ (W)w, 1);
3310
3311 EV_FREQUENT_CHECK;
2462} 3312}
2463 3313
2464void 3314void
2465ev_stat_stop (EV_P_ ev_stat *w) 3315ev_stat_stop (EV_P_ ev_stat *w)
2466{ 3316{
2467 clear_pending (EV_A_ (W)w); 3317 clear_pending (EV_A_ (W)w);
2468 if (expect_false (!ev_is_active (w))) 3318 if (expect_false (!ev_is_active (w)))
2469 return; 3319 return;
2470 3320
3321 EV_FREQUENT_CHECK;
3322
2471#if EV_USE_INOTIFY 3323#if EV_USE_INOTIFY
2472 infy_del (EV_A_ w); 3324 infy_del (EV_A_ w);
2473#endif 3325#endif
3326
3327 if (ev_is_active (&w->timer))
3328 {
3329 ev_ref (EV_A);
2474 ev_timer_stop (EV_A_ &w->timer); 3330 ev_timer_stop (EV_A_ &w->timer);
3331 }
2475 3332
2476 ev_stop (EV_A_ (W)w); 3333 ev_stop (EV_A_ (W)w);
3334
3335 EV_FREQUENT_CHECK;
2477} 3336}
2478#endif 3337#endif
2479 3338
2480#if EV_IDLE_ENABLE 3339#if EV_IDLE_ENABLE
2481void 3340void
… …
2483{ 3342{
2484 if (expect_false (ev_is_active (w))) 3343 if (expect_false (ev_is_active (w)))
2485 return; 3344 return;
2486 3345
2487 pri_adjust (EV_A_ (W)w); 3346 pri_adjust (EV_A_ (W)w);
3347
3348 EV_FREQUENT_CHECK;
2488 3349
2489 { 3350 {
2490 int active = ++idlecnt [ABSPRI (w)]; 3351 int active = ++idlecnt [ABSPRI (w)];
2491 3352
2492 ++idleall; 3353 ++idleall;
2493 ev_start (EV_A_ (W)w, active); 3354 ev_start (EV_A_ (W)w, active);
2494 3355
2495 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3356 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2496 idles [ABSPRI (w)][active - 1] = w; 3357 idles [ABSPRI (w)][active - 1] = w;
2497 } 3358 }
3359
3360 EV_FREQUENT_CHECK;
2498} 3361}
2499 3362
2500void 3363void
2501ev_idle_stop (EV_P_ ev_idle *w) 3364ev_idle_stop (EV_P_ ev_idle *w)
2502{ 3365{
2503 clear_pending (EV_A_ (W)w); 3366 clear_pending (EV_A_ (W)w);
2504 if (expect_false (!ev_is_active (w))) 3367 if (expect_false (!ev_is_active (w)))
2505 return; 3368 return;
2506 3369
3370 EV_FREQUENT_CHECK;
3371
2507 { 3372 {
2508 int active = ev_active (w); 3373 int active = ev_active (w);
2509 3374
2510 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3375 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2511 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3376 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2512 3377
2513 ev_stop (EV_A_ (W)w); 3378 ev_stop (EV_A_ (W)w);
2514 --idleall; 3379 --idleall;
2515 } 3380 }
2516}
2517#endif
2518 3381
3382 EV_FREQUENT_CHECK;
3383}
3384#endif
3385
3386#if EV_PREPARE_ENABLE
2519void 3387void
2520ev_prepare_start (EV_P_ ev_prepare *w) 3388ev_prepare_start (EV_P_ ev_prepare *w)
2521{ 3389{
2522 if (expect_false (ev_is_active (w))) 3390 if (expect_false (ev_is_active (w)))
2523 return; 3391 return;
3392
3393 EV_FREQUENT_CHECK;
2524 3394
2525 ev_start (EV_A_ (W)w, ++preparecnt); 3395 ev_start (EV_A_ (W)w, ++preparecnt);
2526 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3396 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2527 prepares [preparecnt - 1] = w; 3397 prepares [preparecnt - 1] = w;
3398
3399 EV_FREQUENT_CHECK;
2528} 3400}
2529 3401
2530void 3402void
2531ev_prepare_stop (EV_P_ ev_prepare *w) 3403ev_prepare_stop (EV_P_ ev_prepare *w)
2532{ 3404{
2533 clear_pending (EV_A_ (W)w); 3405 clear_pending (EV_A_ (W)w);
2534 if (expect_false (!ev_is_active (w))) 3406 if (expect_false (!ev_is_active (w)))
2535 return; 3407 return;
2536 3408
3409 EV_FREQUENT_CHECK;
3410
2537 { 3411 {
2538 int active = ev_active (w); 3412 int active = ev_active (w);
2539 3413
2540 prepares [active - 1] = prepares [--preparecnt]; 3414 prepares [active - 1] = prepares [--preparecnt];
2541 ev_active (prepares [active - 1]) = active; 3415 ev_active (prepares [active - 1]) = active;
2542 } 3416 }
2543 3417
2544 ev_stop (EV_A_ (W)w); 3418 ev_stop (EV_A_ (W)w);
2545}
2546 3419
3420 EV_FREQUENT_CHECK;
3421}
3422#endif
3423
3424#if EV_CHECK_ENABLE
2547void 3425void
2548ev_check_start (EV_P_ ev_check *w) 3426ev_check_start (EV_P_ ev_check *w)
2549{ 3427{
2550 if (expect_false (ev_is_active (w))) 3428 if (expect_false (ev_is_active (w)))
2551 return; 3429 return;
3430
3431 EV_FREQUENT_CHECK;
2552 3432
2553 ev_start (EV_A_ (W)w, ++checkcnt); 3433 ev_start (EV_A_ (W)w, ++checkcnt);
2554 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3434 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2555 checks [checkcnt - 1] = w; 3435 checks [checkcnt - 1] = w;
3436
3437 EV_FREQUENT_CHECK;
2556} 3438}
2557 3439
2558void 3440void
2559ev_check_stop (EV_P_ ev_check *w) 3441ev_check_stop (EV_P_ ev_check *w)
2560{ 3442{
2561 clear_pending (EV_A_ (W)w); 3443 clear_pending (EV_A_ (W)w);
2562 if (expect_false (!ev_is_active (w))) 3444 if (expect_false (!ev_is_active (w)))
2563 return; 3445 return;
2564 3446
3447 EV_FREQUENT_CHECK;
3448
2565 { 3449 {
2566 int active = ev_active (w); 3450 int active = ev_active (w);
2567 3451
2568 checks [active - 1] = checks [--checkcnt]; 3452 checks [active - 1] = checks [--checkcnt];
2569 ev_active (checks [active - 1]) = active; 3453 ev_active (checks [active - 1]) = active;
2570 } 3454 }
2571 3455
2572 ev_stop (EV_A_ (W)w); 3456 ev_stop (EV_A_ (W)w);
3457
3458 EV_FREQUENT_CHECK;
2573} 3459}
3460#endif
2574 3461
2575#if EV_EMBED_ENABLE 3462#if EV_EMBED_ENABLE
2576void noinline 3463void noinline
2577ev_embed_sweep (EV_P_ ev_embed *w) 3464ev_embed_sweep (EV_P_ ev_embed *w)
2578{ 3465{
2579 ev_loop (w->other, EVLOOP_NONBLOCK); 3466 ev_run (w->other, EVRUN_NOWAIT);
2580} 3467}
2581 3468
2582static void 3469static void
2583embed_io_cb (EV_P_ ev_io *io, int revents) 3470embed_io_cb (EV_P_ ev_io *io, int revents)
2584{ 3471{
2585 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3472 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2586 3473
2587 if (ev_cb (w)) 3474 if (ev_cb (w))
2588 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3475 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2589 else 3476 else
2590 ev_loop (w->other, EVLOOP_NONBLOCK); 3477 ev_run (w->other, EVRUN_NOWAIT);
2591} 3478}
2592 3479
2593static void 3480static void
2594embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3481embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2595{ 3482{
2596 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3483 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2597 3484
2598 { 3485 {
2599 struct ev_loop *loop = w->other; 3486 EV_P = w->other;
2600 3487
2601 while (fdchangecnt) 3488 while (fdchangecnt)
2602 { 3489 {
2603 fd_reify (EV_A); 3490 fd_reify (EV_A);
2604 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3491 ev_run (EV_A_ EVRUN_NOWAIT);
2605 } 3492 }
2606 } 3493 }
3494}
3495
3496static void
3497embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3498{
3499 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3500
3501 ev_embed_stop (EV_A_ w);
3502
3503 {
3504 EV_P = w->other;
3505
3506 ev_loop_fork (EV_A);
3507 ev_run (EV_A_ EVRUN_NOWAIT);
3508 }
3509
3510 ev_embed_start (EV_A_ w);
2607} 3511}
2608 3512
2609#if 0 3513#if 0
2610static void 3514static void
2611embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3515embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2619{ 3523{
2620 if (expect_false (ev_is_active (w))) 3524 if (expect_false (ev_is_active (w)))
2621 return; 3525 return;
2622 3526
2623 { 3527 {
2624 struct ev_loop *loop = w->other; 3528 EV_P = w->other;
2625 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3529 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2626 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3530 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2627 } 3531 }
3532
3533 EV_FREQUENT_CHECK;
2628 3534
2629 ev_set_priority (&w->io, ev_priority (w)); 3535 ev_set_priority (&w->io, ev_priority (w));
2630 ev_io_start (EV_A_ &w->io); 3536 ev_io_start (EV_A_ &w->io);
2631 3537
2632 ev_prepare_init (&w->prepare, embed_prepare_cb); 3538 ev_prepare_init (&w->prepare, embed_prepare_cb);
2633 ev_set_priority (&w->prepare, EV_MINPRI); 3539 ev_set_priority (&w->prepare, EV_MINPRI);
2634 ev_prepare_start (EV_A_ &w->prepare); 3540 ev_prepare_start (EV_A_ &w->prepare);
2635 3541
3542 ev_fork_init (&w->fork, embed_fork_cb);
3543 ev_fork_start (EV_A_ &w->fork);
3544
2636 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3545 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2637 3546
2638 ev_start (EV_A_ (W)w, 1); 3547 ev_start (EV_A_ (W)w, 1);
3548
3549 EV_FREQUENT_CHECK;
2639} 3550}
2640 3551
2641void 3552void
2642ev_embed_stop (EV_P_ ev_embed *w) 3553ev_embed_stop (EV_P_ ev_embed *w)
2643{ 3554{
2644 clear_pending (EV_A_ (W)w); 3555 clear_pending (EV_A_ (W)w);
2645 if (expect_false (!ev_is_active (w))) 3556 if (expect_false (!ev_is_active (w)))
2646 return; 3557 return;
2647 3558
3559 EV_FREQUENT_CHECK;
3560
2648 ev_io_stop (EV_A_ &w->io); 3561 ev_io_stop (EV_A_ &w->io);
2649 ev_prepare_stop (EV_A_ &w->prepare); 3562 ev_prepare_stop (EV_A_ &w->prepare);
3563 ev_fork_stop (EV_A_ &w->fork);
2650 3564
2651 ev_stop (EV_A_ (W)w); 3565 ev_stop (EV_A_ (W)w);
3566
3567 EV_FREQUENT_CHECK;
2652} 3568}
2653#endif 3569#endif
2654 3570
2655#if EV_FORK_ENABLE 3571#if EV_FORK_ENABLE
2656void 3572void
2657ev_fork_start (EV_P_ ev_fork *w) 3573ev_fork_start (EV_P_ ev_fork *w)
2658{ 3574{
2659 if (expect_false (ev_is_active (w))) 3575 if (expect_false (ev_is_active (w)))
2660 return; 3576 return;
3577
3578 EV_FREQUENT_CHECK;
2661 3579
2662 ev_start (EV_A_ (W)w, ++forkcnt); 3580 ev_start (EV_A_ (W)w, ++forkcnt);
2663 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3581 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2664 forks [forkcnt - 1] = w; 3582 forks [forkcnt - 1] = w;
3583
3584 EV_FREQUENT_CHECK;
2665} 3585}
2666 3586
2667void 3587void
2668ev_fork_stop (EV_P_ ev_fork *w) 3588ev_fork_stop (EV_P_ ev_fork *w)
2669{ 3589{
2670 clear_pending (EV_A_ (W)w); 3590 clear_pending (EV_A_ (W)w);
2671 if (expect_false (!ev_is_active (w))) 3591 if (expect_false (!ev_is_active (w)))
2672 return; 3592 return;
2673 3593
3594 EV_FREQUENT_CHECK;
3595
2674 { 3596 {
2675 int active = ev_active (w); 3597 int active = ev_active (w);
2676 3598
2677 forks [active - 1] = forks [--forkcnt]; 3599 forks [active - 1] = forks [--forkcnt];
2678 ev_active (forks [active - 1]) = active; 3600 ev_active (forks [active - 1]) = active;
2679 } 3601 }
2680 3602
2681 ev_stop (EV_A_ (W)w); 3603 ev_stop (EV_A_ (W)w);
2682}
2683#endif
2684 3604
3605 EV_FREQUENT_CHECK;
3606}
3607#endif
3608
2685#if EV_ASYNC_ENABLE 3609#if EV_CLEANUP_ENABLE
2686void 3610void
2687ev_async_start (EV_P_ ev_async *w) 3611ev_cleanup_start (EV_P_ ev_cleanup *w)
2688{ 3612{
2689 if (expect_false (ev_is_active (w))) 3613 if (expect_false (ev_is_active (w)))
2690 return; 3614 return;
2691 3615
3616 EV_FREQUENT_CHECK;
3617
3618 ev_start (EV_A_ (W)w, ++cleanupcnt);
3619 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3620 cleanups [cleanupcnt - 1] = w;
3621
3622 /* cleanup watchers should never keep a refcount on the loop */
3623 ev_unref (EV_A);
3624 EV_FREQUENT_CHECK;
3625}
3626
3627void
3628ev_cleanup_stop (EV_P_ ev_cleanup *w)
3629{
3630 clear_pending (EV_A_ (W)w);
3631 if (expect_false (!ev_is_active (w)))
3632 return;
3633
3634 EV_FREQUENT_CHECK;
3635 ev_ref (EV_A);
3636
3637 {
3638 int active = ev_active (w);
3639
3640 cleanups [active - 1] = cleanups [--cleanupcnt];
3641 ev_active (cleanups [active - 1]) = active;
3642 }
3643
3644 ev_stop (EV_A_ (W)w);
3645
3646 EV_FREQUENT_CHECK;
3647}
3648#endif
3649
3650#if EV_ASYNC_ENABLE
3651void
3652ev_async_start (EV_P_ ev_async *w)
3653{
3654 if (expect_false (ev_is_active (w)))
3655 return;
3656
3657 w->sent = 0;
3658
2692 evpipe_init (EV_A); 3659 evpipe_init (EV_A);
3660
3661 EV_FREQUENT_CHECK;
2693 3662
2694 ev_start (EV_A_ (W)w, ++asynccnt); 3663 ev_start (EV_A_ (W)w, ++asynccnt);
2695 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3664 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2696 asyncs [asynccnt - 1] = w; 3665 asyncs [asynccnt - 1] = w;
3666
3667 EV_FREQUENT_CHECK;
2697} 3668}
2698 3669
2699void 3670void
2700ev_async_stop (EV_P_ ev_async *w) 3671ev_async_stop (EV_P_ ev_async *w)
2701{ 3672{
2702 clear_pending (EV_A_ (W)w); 3673 clear_pending (EV_A_ (W)w);
2703 if (expect_false (!ev_is_active (w))) 3674 if (expect_false (!ev_is_active (w)))
2704 return; 3675 return;
2705 3676
3677 EV_FREQUENT_CHECK;
3678
2706 { 3679 {
2707 int active = ev_active (w); 3680 int active = ev_active (w);
2708 3681
2709 asyncs [active - 1] = asyncs [--asynccnt]; 3682 asyncs [active - 1] = asyncs [--asynccnt];
2710 ev_active (asyncs [active - 1]) = active; 3683 ev_active (asyncs [active - 1]) = active;
2711 } 3684 }
2712 3685
2713 ev_stop (EV_A_ (W)w); 3686 ev_stop (EV_A_ (W)w);
3687
3688 EV_FREQUENT_CHECK;
2714} 3689}
2715 3690
2716void 3691void
2717ev_async_send (EV_P_ ev_async *w) 3692ev_async_send (EV_P_ ev_async *w)
2718{ 3693{
2719 w->sent = 1; 3694 w->sent = 1;
2720 evpipe_write (EV_A_ &gotasync); 3695 evpipe_write (EV_A_ &async_pending);
2721} 3696}
2722#endif 3697#endif
2723 3698
2724/*****************************************************************************/ 3699/*****************************************************************************/
2725 3700
… …
2735once_cb (EV_P_ struct ev_once *once, int revents) 3710once_cb (EV_P_ struct ev_once *once, int revents)
2736{ 3711{
2737 void (*cb)(int revents, void *arg) = once->cb; 3712 void (*cb)(int revents, void *arg) = once->cb;
2738 void *arg = once->arg; 3713 void *arg = once->arg;
2739 3714
2740 ev_io_stop (EV_A_ &once->io); 3715 ev_io_stop (EV_A_ &once->io);
2741 ev_timer_stop (EV_A_ &once->to); 3716 ev_timer_stop (EV_A_ &once->to);
2742 ev_free (once); 3717 ev_free (once);
2743 3718
2744 cb (revents, arg); 3719 cb (revents, arg);
2745} 3720}
2746 3721
2747static void 3722static void
2748once_cb_io (EV_P_ ev_io *w, int revents) 3723once_cb_io (EV_P_ ev_io *w, int revents)
2749{ 3724{
2750 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3725 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3726
3727 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2751} 3728}
2752 3729
2753static void 3730static void
2754once_cb_to (EV_P_ ev_timer *w, int revents) 3731once_cb_to (EV_P_ ev_timer *w, int revents)
2755{ 3732{
2756 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3733 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3734
3735 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2757} 3736}
2758 3737
2759void 3738void
2760ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3739ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2761{ 3740{
2762 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3741 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2763 3742
2764 if (expect_false (!once)) 3743 if (expect_false (!once))
2765 { 3744 {
2766 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3745 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2767 return; 3746 return;
2768 } 3747 }
2769 3748
2770 once->cb = cb; 3749 once->cb = cb;
2771 once->arg = arg; 3750 once->arg = arg;
… …
2783 ev_timer_set (&once->to, timeout, 0.); 3762 ev_timer_set (&once->to, timeout, 0.);
2784 ev_timer_start (EV_A_ &once->to); 3763 ev_timer_start (EV_A_ &once->to);
2785 } 3764 }
2786} 3765}
2787 3766
3767/*****************************************************************************/
3768
3769#if EV_WALK_ENABLE
3770void
3771ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3772{
3773 int i, j;
3774 ev_watcher_list *wl, *wn;
3775
3776 if (types & (EV_IO | EV_EMBED))
3777 for (i = 0; i < anfdmax; ++i)
3778 for (wl = anfds [i].head; wl; )
3779 {
3780 wn = wl->next;
3781
3782#if EV_EMBED_ENABLE
3783 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3784 {
3785 if (types & EV_EMBED)
3786 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3787 }
3788 else
3789#endif
3790#if EV_USE_INOTIFY
3791 if (ev_cb ((ev_io *)wl) == infy_cb)
3792 ;
3793 else
3794#endif
3795 if ((ev_io *)wl != &pipe_w)
3796 if (types & EV_IO)
3797 cb (EV_A_ EV_IO, wl);
3798
3799 wl = wn;
3800 }
3801
3802 if (types & (EV_TIMER | EV_STAT))
3803 for (i = timercnt + HEAP0; i-- > HEAP0; )
3804#if EV_STAT_ENABLE
3805 /*TODO: timer is not always active*/
3806 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3807 {
3808 if (types & EV_STAT)
3809 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3810 }
3811 else
3812#endif
3813 if (types & EV_TIMER)
3814 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3815
3816#if EV_PERIODIC_ENABLE
3817 if (types & EV_PERIODIC)
3818 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3819 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3820#endif
3821
3822#if EV_IDLE_ENABLE
3823 if (types & EV_IDLE)
3824 for (j = NUMPRI; i--; )
3825 for (i = idlecnt [j]; i--; )
3826 cb (EV_A_ EV_IDLE, idles [j][i]);
3827#endif
3828
3829#if EV_FORK_ENABLE
3830 if (types & EV_FORK)
3831 for (i = forkcnt; i--; )
3832 if (ev_cb (forks [i]) != embed_fork_cb)
3833 cb (EV_A_ EV_FORK, forks [i]);
3834#endif
3835
3836#if EV_ASYNC_ENABLE
3837 if (types & EV_ASYNC)
3838 for (i = asynccnt; i--; )
3839 cb (EV_A_ EV_ASYNC, asyncs [i]);
3840#endif
3841
3842#if EV_PREPARE_ENABLE
3843 if (types & EV_PREPARE)
3844 for (i = preparecnt; i--; )
3845# if EV_EMBED_ENABLE
3846 if (ev_cb (prepares [i]) != embed_prepare_cb)
3847# endif
3848 cb (EV_A_ EV_PREPARE, prepares [i]);
3849#endif
3850
3851#if EV_CHECK_ENABLE
3852 if (types & EV_CHECK)
3853 for (i = checkcnt; i--; )
3854 cb (EV_A_ EV_CHECK, checks [i]);
3855#endif
3856
3857#if EV_SIGNAL_ENABLE
3858 if (types & EV_SIGNAL)
3859 for (i = 0; i < EV_NSIG - 1; ++i)
3860 for (wl = signals [i].head; wl; )
3861 {
3862 wn = wl->next;
3863 cb (EV_A_ EV_SIGNAL, wl);
3864 wl = wn;
3865 }
3866#endif
3867
3868#if EV_CHILD_ENABLE
3869 if (types & EV_CHILD)
3870 for (i = (EV_PID_HASHSIZE); i--; )
3871 for (wl = childs [i]; wl; )
3872 {
3873 wn = wl->next;
3874 cb (EV_A_ EV_CHILD, wl);
3875 wl = wn;
3876 }
3877#endif
3878/* EV_STAT 0x00001000 /* stat data changed */
3879/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3880}
3881#endif
3882
2788#if EV_MULTIPLICITY 3883#if EV_MULTIPLICITY
2789 #include "ev_wrap.h" 3884 #include "ev_wrap.h"
2790#endif 3885#endif
2791 3886
2792#ifdef __cplusplus 3887EV_CPP(})
2793}
2794#endif
2795 3888

Diff Legend

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