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Comparing libev/ev.c (file contents):
Revision 1.228 by root, Fri May 2 08:07:37 2008 UTC vs.
Revision 1.364 by root, Sun Oct 24 21:51:03 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
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
335#ifndef EV_USE_4HEAP
336# define EV_USE_4HEAP EV_FEATURE_DATA
337#endif
338
339#ifndef EV_HEAP_CACHE_AT
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
355#endif
356
240/* 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
241 364
242#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
245#endif 368#endif
… …
259# include <sys/select.h> 382# include <sys/select.h>
260# endif 383# endif
261#endif 384#endif
262 385
263#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/statfs.h>
264# 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
265#endif 394#endif
266 395
267#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 397# include <winsock.h>
269#endif 398#endif
270 399
271#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
272/* 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 */
273# include <stdint.h> 402# include <stdint.h>
274# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
275extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
276# endif 405# endif
277int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
278# ifdef __cplusplus 407# ifdef O_CLOEXEC
279} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
280# 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};
281#endif 436#endif
282 437
283/**/ 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
284 445
285/* 446/*
286 * This is used to avoid floating point rounding problems. 447 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics 448 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding 449 * to ensure progress, time-wise, even when rounding
… …
292 */ 453 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294 455
295#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) */
296#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) */
297/*#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)
298 461
299#if __GNUC__ >= 4 462#if __GNUC__ >= 4
300# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
301# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
302#else 465#else
… …
309 472
310#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
311#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
312#define inline_size static inline 475#define inline_size static inline
313 476
314#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
315# 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)
316#else 487#else
317# define inline_speed static inline
318#endif
319
320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
322 490
323#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
325 493
326typedef ev_watcher *W; 494typedef ev_watcher *W;
327typedef ev_watcher_list *WL; 495typedef ev_watcher_list *WL;
328typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
329 497
498#define ev_active(w) ((W)(w))->active
330#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
331 500
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
332#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
333/* sig_atomic_t is used to avoid per-thread variables or locking but still */
334/* giving it a reasonably high chance of working on typical architetcures */
335static 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)
336#endif 519#endif
337 520
338#ifdef _WIN32 521#ifdef _WIN32
339# include "ev_win32.c" 522# include "ev_win32.c"
340#endif 523#endif
341 524
342/*****************************************************************************/ 525/*****************************************************************************/
343 526
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
344static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
345 578
346void 579void
347ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
348{ 581{
349 syserr_cb = cb; 582 syserr_cb = cb;
350} 583}
351 584
352static void noinline 585static void noinline
353syserr (const char *msg) 586ev_syserr (const char *msg)
354{ 587{
355 if (!msg) 588 if (!msg)
356 msg = "(libev) system error"; 589 msg = "(libev) system error";
357 590
358 if (syserr_cb) 591 if (syserr_cb)
359 syserr_cb (msg); 592 syserr_cb (msg);
360 else 593 else
361 { 594 {
595#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg);
599 ev_printerr (": ");
600 ev_printerr (err);
601 ev_printerr ("\n");
602#else
362 perror (msg); 603 perror (msg);
604#endif
363 abort (); 605 abort ();
364 } 606 }
365} 607}
366 608
367static void * 609static void *
368ev_realloc_emul (void *ptr, long size) 610ev_realloc_emul (void *ptr, long size)
369{ 611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
370 /* some systems, notably openbsd and darwin, fail to properly 615 /* some systems, notably openbsd and darwin, fail to properly
371 * implement realloc (x, 0) (as required by both ansi c-98 and 616 * implement realloc (x, 0) (as required by both ansi c-89 and
372 * the single unix specification, so work around them here. 617 * the single unix specification, so work around them here.
373 */ 618 */
374 619
375 if (size) 620 if (size)
376 return realloc (ptr, size); 621 return realloc (ptr, size);
377 622
378 free (ptr); 623 free (ptr);
379 return 0; 624 return 0;
625#endif
380} 626}
381 627
382static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
383 629
384void 630void
… …
392{ 638{
393 ptr = alloc (ptr, size); 639 ptr = alloc (ptr, size);
394 640
395 if (!ptr && size) 641 if (!ptr && size)
396 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
397 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
398 abort (); 648 abort ();
399 } 649 }
400 650
401 return ptr; 651 return ptr;
402} 652}
… …
404#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
405#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
406 656
407/*****************************************************************************/ 657/*****************************************************************************/
408 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
409typedef struct 663typedef struct
410{ 664{
411 WL head; 665 WL head;
412 unsigned char events; 666 unsigned char events; /* the events watched for */
667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
413 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
414#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
415 SOCKET handle; 674 SOCKET handle;
416#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
417} ANFD; 679} ANFD;
418 680
681/* stores the pending event set for a given watcher */
419typedef struct 682typedef struct
420{ 683{
421 W w; 684 W w;
422 int events; 685 int events; /* the pending event set for the given watcher */
423} ANPENDING; 686} ANPENDING;
424 687
425#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
689/* hash table entry per inotify-id */
426typedef struct 690typedef struct
427{ 691{
428 WL head; 692 WL head;
429} ANFS; 693} ANFS;
694#endif
695
696/* Heap Entry */
697#if EV_HEAP_CACHE_AT
698 /* a heap element */
699 typedef struct {
700 ev_tstamp at;
701 WT w;
702 } ANHE;
703
704 #define ANHE_w(he) (he).w /* access watcher, read-write */
705 #define ANHE_at(he) (he).at /* access cached at, read-only */
706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
707#else
708 /* a heap element */
709 typedef WT ANHE;
710
711 #define ANHE_w(he) (he)
712 #define ANHE_at(he) (he)->at
713 #define ANHE_at_cache(he)
430#endif 714#endif
431 715
432#if EV_MULTIPLICITY 716#if EV_MULTIPLICITY
433 717
434 struct ev_loop 718 struct ev_loop
… …
453 737
454 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
455 739
456#endif 740#endif
457 741
742#if EV_FEATURE_API
743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
745# define EV_INVOKE_PENDING invoke_cb (EV_A)
746#else
747# define EV_RELEASE_CB (void)0
748# define EV_ACQUIRE_CB (void)0
749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
750#endif
751
752#define EVBREAK_RECURSE 0x80
753
458/*****************************************************************************/ 754/*****************************************************************************/
459 755
756#ifndef EV_HAVE_EV_TIME
460ev_tstamp 757ev_tstamp
461ev_time (void) 758ev_time (void)
462{ 759{
463#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
464 struct timespec ts; 763 struct timespec ts;
465 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
466 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
467#else 766 }
767#endif
768
468 struct timeval tv; 769 struct timeval tv;
469 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
470 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
471#endif
472} 772}
773#endif
473 774
474ev_tstamp inline_size 775inline_size ev_tstamp
475get_clock (void) 776get_clock (void)
476{ 777{
477#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
478 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
479 { 780 {
… …
500 if (delay > 0.) 801 if (delay > 0.)
501 { 802 {
502#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
503 struct timespec ts; 804 struct timespec ts;
504 805
505 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
506 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
507
508 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
509#elif defined(_WIN32) 808#elif defined(_WIN32)
510 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
511#else 810#else
512 struct timeval tv; 811 struct timeval tv;
513 812
514 tv.tv_sec = (time_t)delay; 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
515 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 814 /* something not guaranteed by newer posix versions, but guaranteed */
516 815 /* by older ones */
816 EV_TV_SET (tv, delay);
517 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
518#endif 818#endif
519 } 819 }
520} 820}
521 821
522/*****************************************************************************/ 822/*****************************************************************************/
523 823
524int inline_size 824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
825
826/* find a suitable new size for the given array, */
827/* hopefully by rounding to a nice-to-malloc size */
828inline_size int
525array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
526{ 830{
527 int ncur = cur + 1; 831 int ncur = cur + 1;
528 832
529 do 833 do
530 ncur <<= 1; 834 ncur <<= 1;
531 while (cnt > ncur); 835 while (cnt > ncur);
532 836
533 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 837 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
534 if (elem * ncur > 4096) 838 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
535 { 839 {
536 ncur *= elem; 840 ncur *= elem;
537 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 841 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
538 ncur = ncur - sizeof (void *) * 4; 842 ncur = ncur - sizeof (void *) * 4;
539 ncur /= elem; 843 ncur /= elem;
540 } 844 }
541 845
542 return ncur; 846 return ncur;
… …
546array_realloc (int elem, void *base, int *cur, int cnt) 850array_realloc (int elem, void *base, int *cur, int cnt)
547{ 851{
548 *cur = array_nextsize (elem, *cur, cnt); 852 *cur = array_nextsize (elem, *cur, cnt);
549 return ev_realloc (base, elem * *cur); 853 return ev_realloc (base, elem * *cur);
550} 854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
551 858
552#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
553 if (expect_false ((cnt) > (cur))) \ 860 if (expect_false ((cnt) > (cur))) \
554 { \ 861 { \
555 int ocur_ = (cur); \ 862 int ocur_ = (cur); \
… …
567 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
568 } 875 }
569#endif 876#endif
570 877
571#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
572 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
573 880
574/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
575 888
576void noinline 889void noinline
577ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
578{ 891{
579 W w_ = (W)w; 892 W w_ = (W)w;
… …
588 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
589 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
590 } 903 }
591} 904}
592 905
593void inline_speed 906inline_speed void
907feed_reverse (EV_P_ W w)
908{
909 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
910 rfeeds [rfeedcnt++] = w;
911}
912
913inline_size void
914feed_reverse_done (EV_P_ int revents)
915{
916 do
917 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
918 while (rfeedcnt);
919}
920
921inline_speed void
594queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
595{ 923{
596 int i; 924 int i;
597 925
598 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
599 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
600} 928}
601 929
602/*****************************************************************************/ 930/*****************************************************************************/
603 931
604void inline_size 932inline_speed void
605anfds_init (ANFD *base, int count)
606{
607 while (count--)
608 {
609 base->head = 0;
610 base->events = EV_NONE;
611 base->reify = 0;
612
613 ++base;
614 }
615}
616
617void inline_speed
618fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
619{ 934{
620 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
621 ev_io *w; 936 ev_io *w;
622 937
623 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
627 if (ev) 942 if (ev)
628 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
629 } 944 }
630} 945}
631 946
947/* do not submit kernel events for fds that have reify set */
948/* because that means they changed while we were polling for new events */
949inline_speed void
950fd_event (EV_P_ int fd, int revents)
951{
952 ANFD *anfd = anfds + fd;
953
954 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents);
956}
957
632void 958void
633ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
634{ 960{
635 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
636 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
637} 963}
638 964
639void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
640fd_reify (EV_P) 968fd_reify (EV_P)
641{ 969{
642 int i; 970 int i;
643 971
644 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
645 { 973 {
646 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
647 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
648 ev_io *w; 976 ev_io *w;
649 977
650 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
651 980
652 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
653 events |= (unsigned char)w->events;
654 982
655#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
656 if (events) 984 if (o_reify & EV__IOFDSET)
657 { 985 {
658 unsigned long argp; 986 unsigned long arg;
659 #ifdef EV_FD_TO_WIN32_HANDLE
660 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
661 #else
662 anfd->handle = _get_osfhandle (fd);
663 #endif
664 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
665 } 990 }
666#endif 991#endif
667 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
668 { 994 {
669 unsigned char o_events = anfd->events;
670 unsigned char o_reify = anfd->reify;
671
672 anfd->reify = 0;
673 anfd->events = events; 995 anfd->events = 0;
674 996
675 if (o_events != events || o_reify & EV_IOFDSET) 997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
676 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
677 }
678 } 1006 }
679 1007
680 fdchangecnt = 0; 1008 fdchangecnt = 0;
681} 1009}
682 1010
683void inline_size 1011/* something about the given fd changed */
1012inline_size void
684fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
685{ 1014{
686 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
687 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
688 1017
… …
692 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
693 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
694 } 1023 }
695} 1024}
696 1025
697void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
698fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
699{ 1029{
700 ev_io *w; 1030 ev_io *w;
701 1031
702 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
704 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
705 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
706 } 1036 }
707} 1037}
708 1038
709int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
710fd_valid (int fd) 1041fd_valid (int fd)
711{ 1042{
712#ifdef _WIN32 1043#ifdef _WIN32
713 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
714#else 1045#else
715 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
716#endif 1047#endif
717} 1048}
718 1049
… …
722{ 1053{
723 int fd; 1054 int fd;
724 1055
725 for (fd = 0; fd < anfdmax; ++fd) 1056 for (fd = 0; fd < anfdmax; ++fd)
726 if (anfds [fd].events) 1057 if (anfds [fd].events)
727 if (!fd_valid (fd) == -1 && errno == EBADF) 1058 if (!fd_valid (fd) && errno == EBADF)
728 fd_kill (EV_A_ fd); 1059 fd_kill (EV_A_ fd);
729} 1060}
730 1061
731/* called on ENOMEM in select/poll to kill some fds and retry */ 1062/* called on ENOMEM in select/poll to kill some fds and retry */
732static void noinline 1063static void noinline
… …
736 1067
737 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
738 if (anfds [fd].events) 1069 if (anfds [fd].events)
739 { 1070 {
740 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
741 return; 1072 break;
742 } 1073 }
743} 1074}
744 1075
745/* usually called after fork if backend needs to re-arm all fds from scratch */ 1076/* usually called after fork if backend needs to re-arm all fds from scratch */
746static void noinline 1077static void noinline
… …
750 1081
751 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
752 if (anfds [fd].events) 1083 if (anfds [fd].events)
753 { 1084 {
754 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
1086 anfds [fd].emask = 0;
755 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
756 } 1088 }
757} 1089}
758 1090
759/*****************************************************************************/ 1091/* used to prepare libev internal fd's */
760 1092/* this is not fork-safe */
761/* towards the root */ 1093inline_speed void
762void inline_speed
763upheap (WT *heap, int k)
764{
765 WT w = heap [k];
766
767 for (;;)
768 {
769 int p = k >> 1;
770
771 /* maybe we could use a dummy element at heap [0]? */
772 if (!p || heap [p]->at <= w->at)
773 break;
774
775 heap [k] = heap [p];
776 ((W)heap [k])->active = k;
777 k = p;
778 }
779
780 heap [k] = w;
781 ((W)heap [k])->active = k;
782}
783
784/* away from the root */
785void inline_speed
786downheap (WT *heap, int N, int k)
787{
788 WT w = heap [k];
789
790 for (;;)
791 {
792 int c = k << 1;
793
794 if (c > N)
795 break;
796
797 c += c < N && heap [c]->at > heap [c + 1]->at
798 ? 1 : 0;
799
800 if (w->at <= heap [c]->at)
801 break;
802
803 heap [k] = heap [c];
804 ((W)heap [k])->active = k;
805
806 k = c;
807 }
808
809 heap [k] = w;
810 ((W)heap [k])->active = k;
811}
812
813void inline_size
814adjustheap (WT *heap, int N, int k)
815{
816 upheap (heap, k);
817 downheap (heap, N, k);
818}
819
820/*****************************************************************************/
821
822typedef struct
823{
824 WL head;
825 EV_ATOMIC_T gotsig;
826} ANSIG;
827
828static ANSIG *signals;
829static int signalmax;
830
831static EV_ATOMIC_T gotsig;
832
833void inline_size
834signals_init (ANSIG *base, int count)
835{
836 while (count--)
837 {
838 base->head = 0;
839 base->gotsig = 0;
840
841 ++base;
842 }
843}
844
845/*****************************************************************************/
846
847void inline_speed
848fd_intern (int fd) 1094fd_intern (int fd)
849{ 1095{
850#ifdef _WIN32 1096#ifdef _WIN32
851 int arg = 1; 1097 unsigned long arg = 1;
852 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
853#else 1099#else
854 fcntl (fd, F_SETFD, FD_CLOEXEC); 1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
855 fcntl (fd, F_SETFL, O_NONBLOCK); 1101 fcntl (fd, F_SETFL, O_NONBLOCK);
856#endif 1102#endif
857} 1103}
858 1104
1105/*****************************************************************************/
1106
1107/*
1108 * the heap functions want a real array index. array index 0 is guaranteed to not
1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1110 * the branching factor of the d-tree.
1111 */
1112
1113/*
1114 * at the moment we allow libev the luxury of two heaps,
1115 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1116 * which is more cache-efficient.
1117 * the difference is about 5% with 50000+ watchers.
1118 */
1119#if EV_USE_4HEAP
1120
1121#define DHEAP 4
1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1124#define UPHEAP_DONE(p,k) ((p) == (k))
1125
1126/* away from the root */
1127inline_speed void
1128downheap (ANHE *heap, int N, int k)
1129{
1130 ANHE he = heap [k];
1131 ANHE *E = heap + N + HEAP0;
1132
1133 for (;;)
1134 {
1135 ev_tstamp minat;
1136 ANHE *minpos;
1137 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1138
1139 /* find minimum child */
1140 if (expect_true (pos + DHEAP - 1 < E))
1141 {
1142 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1143 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1144 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1145 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1146 }
1147 else if (pos < E)
1148 {
1149 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1150 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1151 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1152 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1153 }
1154 else
1155 break;
1156
1157 if (ANHE_at (he) <= minat)
1158 break;
1159
1160 heap [k] = *minpos;
1161 ev_active (ANHE_w (*minpos)) = k;
1162
1163 k = minpos - heap;
1164 }
1165
1166 heap [k] = he;
1167 ev_active (ANHE_w (he)) = k;
1168}
1169
1170#else /* 4HEAP */
1171
1172#define HEAP0 1
1173#define HPARENT(k) ((k) >> 1)
1174#define UPHEAP_DONE(p,k) (!(p))
1175
1176/* away from the root */
1177inline_speed void
1178downheap (ANHE *heap, int N, int k)
1179{
1180 ANHE he = heap [k];
1181
1182 for (;;)
1183 {
1184 int c = k << 1;
1185
1186 if (c >= N + HEAP0)
1187 break;
1188
1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1190 ? 1 : 0;
1191
1192 if (ANHE_at (he) <= ANHE_at (heap [c]))
1193 break;
1194
1195 heap [k] = heap [c];
1196 ev_active (ANHE_w (heap [k])) = k;
1197
1198 k = c;
1199 }
1200
1201 heap [k] = he;
1202 ev_active (ANHE_w (he)) = k;
1203}
1204#endif
1205
1206/* towards the root */
1207inline_speed void
1208upheap (ANHE *heap, int k)
1209{
1210 ANHE he = heap [k];
1211
1212 for (;;)
1213 {
1214 int p = HPARENT (k);
1215
1216 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1217 break;
1218
1219 heap [k] = heap [p];
1220 ev_active (ANHE_w (heap [k])) = k;
1221 k = p;
1222 }
1223
1224 heap [k] = he;
1225 ev_active (ANHE_w (he)) = k;
1226}
1227
1228/* move an element suitably so it is in a correct place */
1229inline_size void
1230adjustheap (ANHE *heap, int N, int k)
1231{
1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1233 upheap (heap, k);
1234 else
1235 downheap (heap, N, k);
1236}
1237
1238/* rebuild the heap: this function is used only once and executed rarely */
1239inline_size void
1240reheap (ANHE *heap, int N)
1241{
1242 int i;
1243
1244 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1245 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1246 for (i = 0; i < N; ++i)
1247 upheap (heap, i + HEAP0);
1248}
1249
1250/*****************************************************************************/
1251
1252/* associate signal watchers to a signal signal */
1253typedef struct
1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
1259 WL head;
1260} ANSIG;
1261
1262static ANSIG signals [EV_NSIG - 1];
1263
1264/*****************************************************************************/
1265
1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1267
859static void noinline 1268static void noinline
860evpipe_init (EV_P) 1269evpipe_init (EV_P)
861{ 1270{
862 if (!ev_is_active (&pipeev)) 1271 if (!ev_is_active (&pipe_w))
863 { 1272 {
864#if EV_USE_EVENTFD 1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
865 if ((evfd = eventfd (0, 0)) >= 0) 1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
866 { 1279 {
867 evpipe [0] = -1; 1280 evpipe [0] = -1;
868 fd_intern (evfd); 1281 fd_intern (evfd); /* doing it twice doesn't hurt */
869 ev_io_set (&pipeev, evfd, EV_READ); 1282 ev_io_set (&pipe_w, evfd, EV_READ);
870 } 1283 }
871 else 1284 else
872#endif 1285# endif
873 { 1286 {
874 while (pipe (evpipe)) 1287 while (pipe (evpipe))
875 syserr ("(libev) error creating signal/async pipe"); 1288 ev_syserr ("(libev) error creating signal/async pipe");
876 1289
877 fd_intern (evpipe [0]); 1290 fd_intern (evpipe [0]);
878 fd_intern (evpipe [1]); 1291 fd_intern (evpipe [1]);
879 ev_io_set (&pipeev, evpipe [0], EV_READ); 1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
880 } 1293 }
881 1294
882 ev_io_start (EV_A_ &pipeev); 1295 ev_io_start (EV_A_ &pipe_w);
883 ev_unref (EV_A); /* watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
884 } 1297 }
885} 1298}
886 1299
887void inline_size 1300inline_size void
888evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
889{ 1302{
890 if (!*flag) 1303 if (!*flag)
891 { 1304 {
892 int old_errno = errno; /* save errno because write might clobber it */ 1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
893 1307
894 *flag = 1; 1308 *flag = 1;
895 1309
896#if EV_USE_EVENTFD 1310#if EV_USE_EVENTFD
897 if (evfd >= 0) 1311 if (evfd >= 0)
… …
899 uint64_t counter = 1; 1313 uint64_t counter = 1;
900 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
901 } 1315 }
902 else 1316 else
903#endif 1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
904 write (evpipe [1], &old_errno, 1); 1323 write (evpipe [1], &dummy, 1);
905 1324
906 errno = old_errno; 1325 errno = old_errno;
907 } 1326 }
908} 1327}
909 1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
910static void 1331static void
911pipecb (EV_P_ ev_io *iow, int revents) 1332pipecb (EV_P_ ev_io *iow, int revents)
912{ 1333{
1334 int i;
1335
913#if EV_USE_EVENTFD 1336#if EV_USE_EVENTFD
914 if (evfd >= 0) 1337 if (evfd >= 0)
915 { 1338 {
916 uint64_t counter = 1; 1339 uint64_t counter;
917 read (evfd, &counter, sizeof (uint64_t)); 1340 read (evfd, &counter, sizeof (uint64_t));
918 } 1341 }
919 else 1342 else
920#endif 1343#endif
921 { 1344 {
922 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
923 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
924 } 1348 }
925 1349
926 if (gotsig && ev_is_default_loop (EV_A)) 1350 if (sig_pending)
927 { 1351 {
928 int signum; 1352 sig_pending = 0;
929 gotsig = 0;
930 1353
931 for (signum = signalmax; signum--; ) 1354 for (i = EV_NSIG - 1; i--; )
932 if (signals [signum].gotsig) 1355 if (expect_false (signals [i].pending))
933 ev_feed_signal_event (EV_A_ signum + 1); 1356 ev_feed_signal_event (EV_A_ i + 1);
934 } 1357 }
935 1358
936#if EV_ASYNC_ENABLE 1359#if EV_ASYNC_ENABLE
937 if (gotasync) 1360 if (async_pending)
938 { 1361 {
939 int i; 1362 async_pending = 0;
940 gotasync = 0;
941 1363
942 for (i = asynccnt; i--; ) 1364 for (i = asynccnt; i--; )
943 if (asyncs [i]->sent) 1365 if (asyncs [i]->sent)
944 { 1366 {
945 asyncs [i]->sent = 0; 1367 asyncs [i]->sent = 0;
… …
953 1375
954static void 1376static void
955ev_sighandler (int signum) 1377ev_sighandler (int signum)
956{ 1378{
957#if EV_MULTIPLICITY 1379#if EV_MULTIPLICITY
958 struct ev_loop *loop = &default_loop_struct; 1380 EV_P = signals [signum - 1].loop;
959#endif 1381#endif
960 1382
961#if _WIN32 1383#ifdef _WIN32
962 signal (signum, ev_sighandler); 1384 signal (signum, ev_sighandler);
963#endif 1385#endif
964 1386
965 signals [signum - 1].gotsig = 1; 1387 signals [signum - 1].pending = 1;
966 evpipe_write (EV_A_ &gotsig); 1388 evpipe_write (EV_A_ &sig_pending);
967} 1389}
968 1390
969void noinline 1391void noinline
970ev_feed_signal_event (EV_P_ int signum) 1392ev_feed_signal_event (EV_P_ int signum)
971{ 1393{
972 WL w; 1394 WL w;
973 1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
974#if EV_MULTIPLICITY 1401#if EV_MULTIPLICITY
975 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1402 /* it is permissible to try to feed a signal to the wrong loop */
976#endif 1403 /* or, likely more useful, feeding a signal nobody is waiting for */
977 1404
978 --signum; 1405 if (expect_false (signals [signum].loop != EV_A))
979
980 if (signum < 0 || signum >= signalmax)
981 return; 1406 return;
1407#endif
982 1408
983 signals [signum].gotsig = 0; 1409 signals [signum].pending = 0;
984 1410
985 for (w = signals [signum].head; w; w = w->next) 1411 for (w = signals [signum].head; w; w = w->next)
986 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
987} 1413}
988 1414
1415#if EV_USE_SIGNALFD
1416static void
1417sigfdcb (EV_P_ ev_io *iow, int revents)
1418{
1419 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1420
1421 for (;;)
1422 {
1423 ssize_t res = read (sigfd, si, sizeof (si));
1424
1425 /* not ISO-C, as res might be -1, but works with SuS */
1426 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1427 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1428
1429 if (res < (ssize_t)sizeof (si))
1430 break;
1431 }
1432}
1433#endif
1434
1435#endif
1436
989/*****************************************************************************/ 1437/*****************************************************************************/
990 1438
1439#if EV_CHILD_ENABLE
991static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
992
993#ifndef _WIN32
994 1441
995static ev_signal childev; 1442static ev_signal childev;
996 1443
997#ifndef WIFCONTINUED 1444#ifndef WIFCONTINUED
998# define WIFCONTINUED(status) 0 1445# define WIFCONTINUED(status) 0
999#endif 1446#endif
1000 1447
1001void inline_speed 1448/* handle a single child status event */
1449inline_speed void
1002child_reap (EV_P_ int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
1003{ 1451{
1004 ev_child *w; 1452 ev_child *w;
1005 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1006 1454
1007 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1455 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1008 { 1456 {
1009 if ((w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1010 && (!traced || (w->flags & 1))) 1458 && (!traced || (w->flags & 1)))
1011 { 1459 {
1012 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1460 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1019 1467
1020#ifndef WCONTINUED 1468#ifndef WCONTINUED
1021# define WCONTINUED 0 1469# define WCONTINUED 0
1022#endif 1470#endif
1023 1471
1472/* called on sigchld etc., calls waitpid */
1024static void 1473static void
1025childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
1026{ 1475{
1027 int pid, status; 1476 int pid, status;
1028 1477
… …
1036 /* make sure we are called again until all children have been reaped */ 1485 /* make sure we are called again until all children have been reaped */
1037 /* we need to do it this way so that the callback gets called before we continue */ 1486 /* we need to do it this way so that the callback gets called before we continue */
1038 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1039 1488
1040 child_reap (EV_A_ pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1041 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
1042 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1491 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1043} 1492}
1044 1493
1045#endif 1494#endif
1046 1495
1047/*****************************************************************************/ 1496/*****************************************************************************/
1048 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1049#if EV_USE_PORT 1501#if EV_USE_PORT
1050# include "ev_port.c" 1502# include "ev_port.c"
1051#endif 1503#endif
1052#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1053# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
1109 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
1110 /* it usually doesn't work correctly on anything but sockets and pipes */ 1562 /* it usually doesn't work correctly on anything but sockets and pipes */
1111 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
1112#endif 1564#endif
1113#ifdef __APPLE__ 1565#ifdef __APPLE__
1114 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
1115 flags &= ~EVBACKEND_POLL; 1567 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1568 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1569#endif
1570#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1116#endif 1572#endif
1117 1573
1118 return flags; 1574 return flags;
1119} 1575}
1120 1576
… …
1122ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1123{ 1579{
1124 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1125 1581
1126 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1127 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1128 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1129 1585
1130 return flags; 1586 return flags;
1131} 1587}
1132 1588
1133unsigned int 1589unsigned int
1134ev_backend (EV_P) 1590ev_backend (EV_P)
1135{ 1591{
1136 return backend; 1592 return backend;
1137} 1593}
1138 1594
1595#if EV_FEATURE_API
1139unsigned int 1596unsigned int
1140ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1141{ 1598{
1142 return loop_count; 1599 return loop_count;
1143} 1600}
1144 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
1145void 1608void
1146ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1147{ 1610{
1148 io_blocktime = interval; 1611 io_blocktime = interval;
1149} 1612}
… …
1152ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1153{ 1616{
1154 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1155} 1618}
1156 1619
1620void
1621ev_set_userdata (EV_P_ void *data)
1622{
1623 userdata = data;
1624}
1625
1626void *
1627ev_userdata (EV_P)
1628{
1629 return userdata;
1630}
1631
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1633{
1634 invoke_cb = invoke_pending_cb;
1635}
1636
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1638{
1639 release_cb = release;
1640 acquire_cb = acquire;
1641}
1642#endif
1643
1644/* initialise a loop structure, must be zero-initialised */
1157static void noinline 1645static void noinline
1158loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1159{ 1647{
1160 if (!backend) 1648 if (!backend)
1161 { 1649 {
1650#if EV_USE_REALTIME
1651 if (!have_realtime)
1652 {
1653 struct timespec ts;
1654
1655 if (!clock_gettime (CLOCK_REALTIME, &ts))
1656 have_realtime = 1;
1657 }
1658#endif
1659
1162#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1163 { 1662 {
1164 struct timespec ts; 1663 struct timespec ts;
1664
1165 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1166 have_monotonic = 1; 1666 have_monotonic = 1;
1167 } 1667 }
1168#endif 1668#endif
1669
1670 /* pid check not overridable via env */
1671#ifndef _WIN32
1672 if (flags & EVFLAG_FORKCHECK)
1673 curpid = getpid ();
1674#endif
1675
1676 if (!(flags & EVFLAG_NOENV)
1677 && !enable_secure ()
1678 && getenv ("LIBEV_FLAGS"))
1679 flags = atoi (getenv ("LIBEV_FLAGS"));
1169 1680
1170 ev_rt_now = ev_time (); 1681 ev_rt_now = ev_time ();
1171 mn_now = get_clock (); 1682 mn_now = get_clock ();
1172 now_floor = mn_now; 1683 now_floor = mn_now;
1173 rtmn_diff = ev_rt_now - mn_now; 1684 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending;
1687#endif
1174 1688
1175 io_blocktime = 0.; 1689 io_blocktime = 0.;
1176 timeout_blocktime = 0.; 1690 timeout_blocktime = 0.;
1177 backend = 0; 1691 backend = 0;
1178 backend_fd = -1; 1692 backend_fd = -1;
1179 gotasync = 0; 1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1180#if EV_USE_INOTIFY 1697#if EV_USE_INOTIFY
1181 fs_fd = -2; 1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1182#endif 1699#endif
1183 1700#if EV_USE_SIGNALFD
1184 /* pid check not overridable via env */ 1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1185#ifndef _WIN32
1186 if (flags & EVFLAG_FORKCHECK)
1187 curpid = getpid ();
1188#endif 1702#endif
1189
1190 if (!(flags & EVFLAG_NOENV)
1191 && !enable_secure ()
1192 && getenv ("LIBEV_FLAGS"))
1193 flags = atoi (getenv ("LIBEV_FLAGS"));
1194 1703
1195 if (!(flags & 0x0000ffffU)) 1704 if (!(flags & 0x0000ffffU))
1196 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1197 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1198#if EV_USE_PORT 1710#if EV_USE_PORT
1199 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1200#endif 1712#endif
1201#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1202 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1209#endif 1721#endif
1210#if EV_USE_SELECT 1722#if EV_USE_SELECT
1211 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1212#endif 1724#endif
1213 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1214 ev_init (&pipeev, pipecb); 1729 ev_init (&pipe_w, pipecb);
1215 ev_set_priority (&pipeev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1216 } 1732 }
1217} 1733}
1218 1734
1219static void noinline 1735/* free up a loop structure */
1736void
1220loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
1221{ 1738{
1222 int i; 1739 int i;
1223 1740
1741#if EV_MULTIPLICITY
1742 /* mimic free (0) */
1743 if (!EV_A)
1744 return;
1745#endif
1746
1747#if EV_CLEANUP_ENABLE
1748 /* queue cleanup watchers (and execute them) */
1749 if (expect_false (cleanupcnt))
1750 {
1751 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1752 EV_INVOKE_PENDING;
1753 }
1754#endif
1755
1756#if EV_CHILD_ENABLE
1757 if (ev_is_active (&childev))
1758 {
1759 ev_ref (EV_A); /* child watcher */
1760 ev_signal_stop (EV_A_ &childev);
1761 }
1762#endif
1763
1224 if (ev_is_active (&pipeev)) 1764 if (ev_is_active (&pipe_w))
1225 { 1765 {
1226 ev_ref (EV_A); /* signal watcher */ 1766 /*ev_ref (EV_A);*/
1227 ev_io_stop (EV_A_ &pipeev); 1767 /*ev_io_stop (EV_A_ &pipe_w);*/
1228 1768
1229#if EV_USE_EVENTFD 1769#if EV_USE_EVENTFD
1230 if (evfd >= 0) 1770 if (evfd >= 0)
1231 close (evfd); 1771 close (evfd);
1232#endif 1772#endif
1233 1773
1234 if (evpipe [0] >= 0) 1774 if (evpipe [0] >= 0)
1235 { 1775 {
1236 close (evpipe [0]); 1776 EV_WIN32_CLOSE_FD (evpipe [0]);
1237 close (evpipe [1]); 1777 EV_WIN32_CLOSE_FD (evpipe [1]);
1238 } 1778 }
1239 } 1779 }
1780
1781#if EV_USE_SIGNALFD
1782 if (ev_is_active (&sigfd_w))
1783 close (sigfd);
1784#endif
1240 1785
1241#if EV_USE_INOTIFY 1786#if EV_USE_INOTIFY
1242 if (fs_fd >= 0) 1787 if (fs_fd >= 0)
1243 close (fs_fd); 1788 close (fs_fd);
1244#endif 1789#endif
1245 1790
1246 if (backend_fd >= 0) 1791 if (backend_fd >= 0)
1247 close (backend_fd); 1792 close (backend_fd);
1248 1793
1794#if EV_USE_IOCP
1795 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1796#endif
1249#if EV_USE_PORT 1797#if EV_USE_PORT
1250 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1798 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1251#endif 1799#endif
1252#if EV_USE_KQUEUE 1800#if EV_USE_KQUEUE
1253 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1801 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1268#if EV_IDLE_ENABLE 1816#if EV_IDLE_ENABLE
1269 array_free (idle, [i]); 1817 array_free (idle, [i]);
1270#endif 1818#endif
1271 } 1819 }
1272 1820
1273 ev_free (anfds); anfdmax = 0; 1821 ev_free (anfds); anfds = 0; anfdmax = 0;
1274 1822
1275 /* have to use the microsoft-never-gets-it-right macro */ 1823 /* have to use the microsoft-never-gets-it-right macro */
1824 array_free (rfeed, EMPTY);
1276 array_free (fdchange, EMPTY); 1825 array_free (fdchange, EMPTY);
1277 array_free (timer, EMPTY); 1826 array_free (timer, EMPTY);
1278#if EV_PERIODIC_ENABLE 1827#if EV_PERIODIC_ENABLE
1279 array_free (periodic, EMPTY); 1828 array_free (periodic, EMPTY);
1280#endif 1829#endif
1281#if EV_FORK_ENABLE 1830#if EV_FORK_ENABLE
1282 array_free (fork, EMPTY); 1831 array_free (fork, EMPTY);
1283#endif 1832#endif
1833#if EV_CLEANUP_ENABLE
1834 array_free (cleanup, EMPTY);
1835#endif
1284 array_free (prepare, EMPTY); 1836 array_free (prepare, EMPTY);
1285 array_free (check, EMPTY); 1837 array_free (check, EMPTY);
1286#if EV_ASYNC_ENABLE 1838#if EV_ASYNC_ENABLE
1287 array_free (async, EMPTY); 1839 array_free (async, EMPTY);
1288#endif 1840#endif
1289 1841
1290 backend = 0; 1842 backend = 0;
1843
1844#if EV_MULTIPLICITY
1845 if (ev_is_default_loop (EV_A))
1846#endif
1847 ev_default_loop_ptr = 0;
1848#if EV_MULTIPLICITY
1849 else
1850 ev_free (EV_A);
1851#endif
1291} 1852}
1292 1853
1293#if EV_USE_INOTIFY 1854#if EV_USE_INOTIFY
1294void inline_size infy_fork (EV_P); 1855inline_size void infy_fork (EV_P);
1295#endif 1856#endif
1296 1857
1297void inline_size 1858inline_size void
1298loop_fork (EV_P) 1859loop_fork (EV_P)
1299{ 1860{
1300#if EV_USE_PORT 1861#if EV_USE_PORT
1301 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1862 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1302#endif 1863#endif
… …
1308#endif 1869#endif
1309#if EV_USE_INOTIFY 1870#if EV_USE_INOTIFY
1310 infy_fork (EV_A); 1871 infy_fork (EV_A);
1311#endif 1872#endif
1312 1873
1313 if (ev_is_active (&pipeev)) 1874 if (ev_is_active (&pipe_w))
1314 { 1875 {
1315 /* this "locks" the handlers against writing to the pipe */ 1876 /* this "locks" the handlers against writing to the pipe */
1316 /* while we modify the fd vars */ 1877 /* while we modify the fd vars */
1317 gotsig = 1; 1878 sig_pending = 1;
1318#if EV_ASYNC_ENABLE 1879#if EV_ASYNC_ENABLE
1319 gotasync = 1; 1880 async_pending = 1;
1320#endif 1881#endif
1321 1882
1322 ev_ref (EV_A); 1883 ev_ref (EV_A);
1323 ev_io_stop (EV_A_ &pipeev); 1884 ev_io_stop (EV_A_ &pipe_w);
1324 1885
1325#if EV_USE_EVENTFD 1886#if EV_USE_EVENTFD
1326 if (evfd >= 0) 1887 if (evfd >= 0)
1327 close (evfd); 1888 close (evfd);
1328#endif 1889#endif
1329 1890
1330 if (evpipe [0] >= 0) 1891 if (evpipe [0] >= 0)
1331 { 1892 {
1332 close (evpipe [0]); 1893 EV_WIN32_CLOSE_FD (evpipe [0]);
1333 close (evpipe [1]); 1894 EV_WIN32_CLOSE_FD (evpipe [1]);
1334 } 1895 }
1335 1896
1897#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1336 evpipe_init (EV_A); 1898 evpipe_init (EV_A);
1337 /* now iterate over everything, in case we missed something */ 1899 /* now iterate over everything, in case we missed something */
1338 pipecb (EV_A_ &pipeev, EV_READ); 1900 pipecb (EV_A_ &pipe_w, EV_READ);
1901#endif
1339 } 1902 }
1340 1903
1341 postfork = 0; 1904 postfork = 0;
1342} 1905}
1906
1907#if EV_MULTIPLICITY
1908
1909struct ev_loop *
1910ev_loop_new (unsigned int flags)
1911{
1912 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1913
1914 memset (EV_A, 0, sizeof (struct ev_loop));
1915 loop_init (EV_A_ flags);
1916
1917 if (ev_backend (EV_A))
1918 return EV_A;
1919
1920 ev_free (EV_A);
1921 return 0;
1922}
1923
1924#endif /* multiplicity */
1925
1926#if EV_VERIFY
1927static void noinline
1928verify_watcher (EV_P_ W w)
1929{
1930 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1931
1932 if (w->pending)
1933 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1934}
1935
1936static void noinline
1937verify_heap (EV_P_ ANHE *heap, int N)
1938{
1939 int i;
1940
1941 for (i = HEAP0; i < N + HEAP0; ++i)
1942 {
1943 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1944 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1945 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1946
1947 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1948 }
1949}
1950
1951static void noinline
1952array_verify (EV_P_ W *ws, int cnt)
1953{
1954 while (cnt--)
1955 {
1956 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1957 verify_watcher (EV_A_ ws [cnt]);
1958 }
1959}
1960#endif
1961
1962#if EV_FEATURE_API
1963void
1964ev_verify (EV_P)
1965{
1966#if EV_VERIFY
1967 int i;
1968 WL w;
1969
1970 assert (activecnt >= -1);
1971
1972 assert (fdchangemax >= fdchangecnt);
1973 for (i = 0; i < fdchangecnt; ++i)
1974 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1975
1976 assert (anfdmax >= 0);
1977 for (i = 0; i < anfdmax; ++i)
1978 for (w = anfds [i].head; w; w = w->next)
1979 {
1980 verify_watcher (EV_A_ (W)w);
1981 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1982 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1983 }
1984
1985 assert (timermax >= timercnt);
1986 verify_heap (EV_A_ timers, timercnt);
1987
1988#if EV_PERIODIC_ENABLE
1989 assert (periodicmax >= periodiccnt);
1990 verify_heap (EV_A_ periodics, periodiccnt);
1991#endif
1992
1993 for (i = NUMPRI; i--; )
1994 {
1995 assert (pendingmax [i] >= pendingcnt [i]);
1996#if EV_IDLE_ENABLE
1997 assert (idleall >= 0);
1998 assert (idlemax [i] >= idlecnt [i]);
1999 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2000#endif
2001 }
2002
2003#if EV_FORK_ENABLE
2004 assert (forkmax >= forkcnt);
2005 array_verify (EV_A_ (W *)forks, forkcnt);
2006#endif
2007
2008#if EV_CLEANUP_ENABLE
2009 assert (cleanupmax >= cleanupcnt);
2010 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2011#endif
2012
2013#if EV_ASYNC_ENABLE
2014 assert (asyncmax >= asynccnt);
2015 array_verify (EV_A_ (W *)asyncs, asynccnt);
2016#endif
2017
2018#if EV_PREPARE_ENABLE
2019 assert (preparemax >= preparecnt);
2020 array_verify (EV_A_ (W *)prepares, preparecnt);
2021#endif
2022
2023#if EV_CHECK_ENABLE
2024 assert (checkmax >= checkcnt);
2025 array_verify (EV_A_ (W *)checks, checkcnt);
2026#endif
2027
2028# if 0
2029#if EV_CHILD_ENABLE
2030 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2031 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2032#endif
2033# endif
2034#endif
2035}
2036#endif
1343 2037
1344#if EV_MULTIPLICITY 2038#if EV_MULTIPLICITY
1345struct ev_loop * 2039struct ev_loop *
1346ev_loop_new (unsigned int flags)
1347{
1348 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1349
1350 memset (loop, 0, sizeof (struct ev_loop));
1351
1352 loop_init (EV_A_ flags);
1353
1354 if (ev_backend (EV_A))
1355 return loop;
1356
1357 return 0;
1358}
1359
1360void
1361ev_loop_destroy (EV_P)
1362{
1363 loop_destroy (EV_A);
1364 ev_free (loop);
1365}
1366
1367void
1368ev_loop_fork (EV_P)
1369{
1370 postfork = 1; /* must be in line with ev_default_fork */
1371}
1372
1373#endif
1374
1375#if EV_MULTIPLICITY
1376struct ev_loop *
1377ev_default_loop_init (unsigned int flags)
1378#else 2040#else
1379int 2041int
2042#endif
1380ev_default_loop (unsigned int flags) 2043ev_default_loop (unsigned int flags)
1381#endif
1382{ 2044{
1383 if (!ev_default_loop_ptr) 2045 if (!ev_default_loop_ptr)
1384 { 2046 {
1385#if EV_MULTIPLICITY 2047#if EV_MULTIPLICITY
1386 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2048 EV_P = ev_default_loop_ptr = &default_loop_struct;
1387#else 2049#else
1388 ev_default_loop_ptr = 1; 2050 ev_default_loop_ptr = 1;
1389#endif 2051#endif
1390 2052
1391 loop_init (EV_A_ flags); 2053 loop_init (EV_A_ flags);
1392 2054
1393 if (ev_backend (EV_A)) 2055 if (ev_backend (EV_A))
1394 { 2056 {
1395#ifndef _WIN32 2057#if EV_CHILD_ENABLE
1396 ev_signal_init (&childev, childcb, SIGCHLD); 2058 ev_signal_init (&childev, childcb, SIGCHLD);
1397 ev_set_priority (&childev, EV_MAXPRI); 2059 ev_set_priority (&childev, EV_MAXPRI);
1398 ev_signal_start (EV_A_ &childev); 2060 ev_signal_start (EV_A_ &childev);
1399 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2061 ev_unref (EV_A); /* child watcher should not keep loop alive */
1400#endif 2062#endif
… …
1405 2067
1406 return ev_default_loop_ptr; 2068 return ev_default_loop_ptr;
1407} 2069}
1408 2070
1409void 2071void
1410ev_default_destroy (void) 2072ev_loop_fork (EV_P)
1411{ 2073{
1412#if EV_MULTIPLICITY
1413 struct ev_loop *loop = ev_default_loop_ptr;
1414#endif
1415
1416#ifndef _WIN32
1417 ev_ref (EV_A); /* child watcher */
1418 ev_signal_stop (EV_A_ &childev);
1419#endif
1420
1421 loop_destroy (EV_A);
1422}
1423
1424void
1425ev_default_fork (void)
1426{
1427#if EV_MULTIPLICITY
1428 struct ev_loop *loop = ev_default_loop_ptr;
1429#endif
1430
1431 if (backend)
1432 postfork = 1; /* must be in line with ev_loop_fork */ 2074 postfork = 1; /* must be in line with ev_default_fork */
1433} 2075}
1434 2076
1435/*****************************************************************************/ 2077/*****************************************************************************/
1436 2078
1437void 2079void
1438ev_invoke (EV_P_ void *w, int revents) 2080ev_invoke (EV_P_ void *w, int revents)
1439{ 2081{
1440 EV_CB_INVOKE ((W)w, revents); 2082 EV_CB_INVOKE ((W)w, revents);
1441} 2083}
1442 2084
1443void inline_speed 2085unsigned int
1444call_pending (EV_P) 2086ev_pending_count (EV_P)
2087{
2088 int pri;
2089 unsigned int count = 0;
2090
2091 for (pri = NUMPRI; pri--; )
2092 count += pendingcnt [pri];
2093
2094 return count;
2095}
2096
2097void noinline
2098ev_invoke_pending (EV_P)
1445{ 2099{
1446 int pri; 2100 int pri;
1447 2101
1448 for (pri = NUMPRI; pri--; ) 2102 for (pri = NUMPRI; pri--; )
1449 while (pendingcnt [pri]) 2103 while (pendingcnt [pri])
1450 { 2104 {
1451 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2105 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1452 2106
1453 if (expect_true (p->w))
1454 {
1455 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2107 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2108 /* ^ this is no longer true, as pending_w could be here */
1456 2109
1457 p->w->pending = 0; 2110 p->w->pending = 0;
1458 EV_CB_INVOKE (p->w, p->events); 2111 EV_CB_INVOKE (p->w, p->events);
1459 } 2112 EV_FREQUENT_CHECK;
1460 } 2113 }
1461} 2114}
1462 2115
1463void inline_size
1464timers_reify (EV_P)
1465{
1466 while (timercnt && ev_at (timers [1]) <= mn_now)
1467 {
1468 ev_timer *w = (ev_timer *)timers [1];
1469
1470 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1471
1472 /* first reschedule or stop timer */
1473 if (w->repeat)
1474 {
1475 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1476
1477 ev_at (w) += w->repeat;
1478 if (ev_at (w) < mn_now)
1479 ev_at (w) = mn_now;
1480
1481 downheap (timers, timercnt, 1);
1482 }
1483 else
1484 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1485
1486 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1487 }
1488}
1489
1490#if EV_PERIODIC_ENABLE
1491void inline_size
1492periodics_reify (EV_P)
1493{
1494 while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1495 {
1496 ev_periodic *w = (ev_periodic *)periodics [1];
1497
1498 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1499
1500 /* first reschedule or stop timer */
1501 if (w->reschedule_cb)
1502 {
1503 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1504 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1505 downheap (periodics, periodiccnt, 1);
1506 }
1507 else if (w->interval)
1508 {
1509 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1510 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1511 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1512 downheap (periodics, periodiccnt, 1);
1513 }
1514 else
1515 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1516
1517 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1518 }
1519}
1520
1521static void noinline
1522periodics_reschedule (EV_P)
1523{
1524 int i;
1525
1526 /* adjust periodics after time jump */
1527 for (i = 0; i < periodiccnt; ++i)
1528 {
1529 ev_periodic *w = (ev_periodic *)periodics [i];
1530
1531 if (w->reschedule_cb)
1532 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1533 else if (w->interval)
1534 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1535 }
1536
1537 /* now rebuild the heap */
1538 for (i = periodiccnt >> 1; i--; )
1539 downheap (periodics, periodiccnt, i);
1540}
1541#endif
1542
1543#if EV_IDLE_ENABLE 2116#if EV_IDLE_ENABLE
1544void inline_size 2117/* make idle watchers pending. this handles the "call-idle */
2118/* only when higher priorities are idle" logic */
2119inline_size void
1545idle_reify (EV_P) 2120idle_reify (EV_P)
1546{ 2121{
1547 if (expect_false (idleall)) 2122 if (expect_false (idleall))
1548 { 2123 {
1549 int pri; 2124 int pri;
… …
1561 } 2136 }
1562 } 2137 }
1563} 2138}
1564#endif 2139#endif
1565 2140
1566void inline_speed 2141/* make timers pending */
2142inline_size void
2143timers_reify (EV_P)
2144{
2145 EV_FREQUENT_CHECK;
2146
2147 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2148 {
2149 do
2150 {
2151 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2152
2153 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2154
2155 /* first reschedule or stop timer */
2156 if (w->repeat)
2157 {
2158 ev_at (w) += w->repeat;
2159 if (ev_at (w) < mn_now)
2160 ev_at (w) = mn_now;
2161
2162 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2163
2164 ANHE_at_cache (timers [HEAP0]);
2165 downheap (timers, timercnt, HEAP0);
2166 }
2167 else
2168 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2169
2170 EV_FREQUENT_CHECK;
2171 feed_reverse (EV_A_ (W)w);
2172 }
2173 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2174
2175 feed_reverse_done (EV_A_ EV_TIMER);
2176 }
2177}
2178
2179#if EV_PERIODIC_ENABLE
2180/* make periodics pending */
2181inline_size void
2182periodics_reify (EV_P)
2183{
2184 EV_FREQUENT_CHECK;
2185
2186 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2187 {
2188 int feed_count = 0;
2189
2190 do
2191 {
2192 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2193
2194 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2195
2196 /* first reschedule or stop timer */
2197 if (w->reschedule_cb)
2198 {
2199 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2200
2201 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2202
2203 ANHE_at_cache (periodics [HEAP0]);
2204 downheap (periodics, periodiccnt, HEAP0);
2205 }
2206 else if (w->interval)
2207 {
2208 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2209 /* if next trigger time is not sufficiently in the future, put it there */
2210 /* this might happen because of floating point inexactness */
2211 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2212 {
2213 ev_at (w) += w->interval;
2214
2215 /* if interval is unreasonably low we might still have a time in the past */
2216 /* so correct this. this will make the periodic very inexact, but the user */
2217 /* has effectively asked to get triggered more often than possible */
2218 if (ev_at (w) < ev_rt_now)
2219 ev_at (w) = ev_rt_now;
2220 }
2221
2222 ANHE_at_cache (periodics [HEAP0]);
2223 downheap (periodics, periodiccnt, HEAP0);
2224 }
2225 else
2226 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2227
2228 EV_FREQUENT_CHECK;
2229 feed_reverse (EV_A_ (W)w);
2230 }
2231 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2232
2233 feed_reverse_done (EV_A_ EV_PERIODIC);
2234 }
2235}
2236
2237/* simply recalculate all periodics */
2238/* TODO: maybe ensure that at least one event happens when jumping forward? */
2239static void noinline
2240periodics_reschedule (EV_P)
2241{
2242 int i;
2243
2244 /* adjust periodics after time jump */
2245 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2246 {
2247 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2248
2249 if (w->reschedule_cb)
2250 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251 else if (w->interval)
2252 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253
2254 ANHE_at_cache (periodics [i]);
2255 }
2256
2257 reheap (periodics, periodiccnt);
2258}
2259#endif
2260
2261/* adjust all timers by a given offset */
2262static void noinline
2263timers_reschedule (EV_P_ ev_tstamp adjust)
2264{
2265 int i;
2266
2267 for (i = 0; i < timercnt; ++i)
2268 {
2269 ANHE *he = timers + i + HEAP0;
2270 ANHE_w (*he)->at += adjust;
2271 ANHE_at_cache (*he);
2272 }
2273}
2274
2275/* fetch new monotonic and realtime times from the kernel */
2276/* also detect if there was a timejump, and act accordingly */
2277inline_speed void
1567time_update (EV_P_ ev_tstamp max_block) 2278time_update (EV_P_ ev_tstamp max_block)
1568{ 2279{
1569 int i;
1570
1571#if EV_USE_MONOTONIC 2280#if EV_USE_MONOTONIC
1572 if (expect_true (have_monotonic)) 2281 if (expect_true (have_monotonic))
1573 { 2282 {
2283 int i;
1574 ev_tstamp odiff = rtmn_diff; 2284 ev_tstamp odiff = rtmn_diff;
1575 2285
1576 mn_now = get_clock (); 2286 mn_now = get_clock ();
1577 2287
1578 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2288 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1596 */ 2306 */
1597 for (i = 4; --i; ) 2307 for (i = 4; --i; )
1598 { 2308 {
1599 rtmn_diff = ev_rt_now - mn_now; 2309 rtmn_diff = ev_rt_now - mn_now;
1600 2310
1601 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2311 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1602 return; /* all is well */ 2312 return; /* all is well */
1603 2313
1604 ev_rt_now = ev_time (); 2314 ev_rt_now = ev_time ();
1605 mn_now = get_clock (); 2315 mn_now = get_clock ();
1606 now_floor = mn_now; 2316 now_floor = mn_now;
1607 } 2317 }
1608 2318
2319 /* no timer adjustment, as the monotonic clock doesn't jump */
2320 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1609# if EV_PERIODIC_ENABLE 2321# if EV_PERIODIC_ENABLE
1610 periodics_reschedule (EV_A); 2322 periodics_reschedule (EV_A);
1611# endif 2323# endif
1612 /* no timer adjustment, as the monotonic clock doesn't jump */
1613 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1614 } 2324 }
1615 else 2325 else
1616#endif 2326#endif
1617 { 2327 {
1618 ev_rt_now = ev_time (); 2328 ev_rt_now = ev_time ();
1619 2329
1620 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2330 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1621 { 2331 {
2332 /* adjust timers. this is easy, as the offset is the same for all of them */
2333 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1622#if EV_PERIODIC_ENABLE 2334#if EV_PERIODIC_ENABLE
1623 periodics_reschedule (EV_A); 2335 periodics_reschedule (EV_A);
1624#endif 2336#endif
1625 /* adjust timers. this is easy, as the offset is the same for all of them */
1626 for (i = 1; i <= timercnt; ++i)
1627 ev_at (timers [i]) += ev_rt_now - mn_now;
1628 } 2337 }
1629 2338
1630 mn_now = ev_rt_now; 2339 mn_now = ev_rt_now;
1631 } 2340 }
1632} 2341}
1633 2342
1634void 2343void
1635ev_ref (EV_P)
1636{
1637 ++activecnt;
1638}
1639
1640void
1641ev_unref (EV_P)
1642{
1643 --activecnt;
1644}
1645
1646static int loop_done;
1647
1648void
1649ev_loop (EV_P_ int flags) 2344ev_run (EV_P_ int flags)
1650{ 2345{
2346#if EV_FEATURE_API
2347 ++loop_depth;
2348#endif
2349
2350 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2351
1651 loop_done = EVUNLOOP_CANCEL; 2352 loop_done = EVBREAK_CANCEL;
1652 2353
1653 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2354 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1654 2355
1655 do 2356 do
1656 { 2357 {
2358#if EV_VERIFY >= 2
2359 ev_verify (EV_A);
2360#endif
2361
1657#ifndef _WIN32 2362#ifndef _WIN32
1658 if (expect_false (curpid)) /* penalise the forking check even more */ 2363 if (expect_false (curpid)) /* penalise the forking check even more */
1659 if (expect_false (getpid () != curpid)) 2364 if (expect_false (getpid () != curpid))
1660 { 2365 {
1661 curpid = getpid (); 2366 curpid = getpid ();
… …
1667 /* we might have forked, so queue fork handlers */ 2372 /* we might have forked, so queue fork handlers */
1668 if (expect_false (postfork)) 2373 if (expect_false (postfork))
1669 if (forkcnt) 2374 if (forkcnt)
1670 { 2375 {
1671 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2376 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1672 call_pending (EV_A); 2377 EV_INVOKE_PENDING;
1673 } 2378 }
1674#endif 2379#endif
1675 2380
2381#if EV_PREPARE_ENABLE
1676 /* queue prepare watchers (and execute them) */ 2382 /* queue prepare watchers (and execute them) */
1677 if (expect_false (preparecnt)) 2383 if (expect_false (preparecnt))
1678 { 2384 {
1679 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2385 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1680 call_pending (EV_A); 2386 EV_INVOKE_PENDING;
1681 } 2387 }
2388#endif
1682 2389
1683 if (expect_false (!activecnt)) 2390 if (expect_false (loop_done))
1684 break; 2391 break;
1685 2392
1686 /* we might have forked, so reify kernel state if necessary */ 2393 /* we might have forked, so reify kernel state if necessary */
1687 if (expect_false (postfork)) 2394 if (expect_false (postfork))
1688 loop_fork (EV_A); 2395 loop_fork (EV_A);
… …
1693 /* calculate blocking time */ 2400 /* calculate blocking time */
1694 { 2401 {
1695 ev_tstamp waittime = 0.; 2402 ev_tstamp waittime = 0.;
1696 ev_tstamp sleeptime = 0.; 2403 ev_tstamp sleeptime = 0.;
1697 2404
2405 /* remember old timestamp for io_blocktime calculation */
2406 ev_tstamp prev_mn_now = mn_now;
2407
2408 /* update time to cancel out callback processing overhead */
2409 time_update (EV_A_ 1e100);
2410
1698 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2411 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1699 { 2412 {
1700 /* update time to cancel out callback processing overhead */
1701 time_update (EV_A_ 1e100);
1702
1703 waittime = MAX_BLOCKTIME; 2413 waittime = MAX_BLOCKTIME;
1704 2414
1705 if (timercnt) 2415 if (timercnt)
1706 { 2416 {
1707 ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge; 2417 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1708 if (waittime > to) waittime = to; 2418 if (waittime > to) waittime = to;
1709 } 2419 }
1710 2420
1711#if EV_PERIODIC_ENABLE 2421#if EV_PERIODIC_ENABLE
1712 if (periodiccnt) 2422 if (periodiccnt)
1713 { 2423 {
1714 ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge; 2424 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1715 if (waittime > to) waittime = to; 2425 if (waittime > to) waittime = to;
1716 } 2426 }
1717#endif 2427#endif
1718 2428
2429 /* don't let timeouts decrease the waittime below timeout_blocktime */
1719 if (expect_false (waittime < timeout_blocktime)) 2430 if (expect_false (waittime < timeout_blocktime))
1720 waittime = timeout_blocktime; 2431 waittime = timeout_blocktime;
1721 2432
1722 sleeptime = waittime - backend_fudge; 2433 /* extra check because io_blocktime is commonly 0 */
1723
1724 if (expect_true (sleeptime > io_blocktime)) 2434 if (expect_false (io_blocktime))
1725 sleeptime = io_blocktime;
1726
1727 if (sleeptime)
1728 { 2435 {
2436 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2437
2438 if (sleeptime > waittime - backend_fudge)
2439 sleeptime = waittime - backend_fudge;
2440
2441 if (expect_true (sleeptime > 0.))
2442 {
1729 ev_sleep (sleeptime); 2443 ev_sleep (sleeptime);
1730 waittime -= sleeptime; 2444 waittime -= sleeptime;
2445 }
1731 } 2446 }
1732 } 2447 }
1733 2448
2449#if EV_FEATURE_API
1734 ++loop_count; 2450 ++loop_count;
2451#endif
2452 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1735 backend_poll (EV_A_ waittime); 2453 backend_poll (EV_A_ waittime);
2454 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1736 2455
1737 /* update ev_rt_now, do magic */ 2456 /* update ev_rt_now, do magic */
1738 time_update (EV_A_ waittime + sleeptime); 2457 time_update (EV_A_ waittime + sleeptime);
1739 } 2458 }
1740 2459
… …
1747#if EV_IDLE_ENABLE 2466#if EV_IDLE_ENABLE
1748 /* queue idle watchers unless other events are pending */ 2467 /* queue idle watchers unless other events are pending */
1749 idle_reify (EV_A); 2468 idle_reify (EV_A);
1750#endif 2469#endif
1751 2470
2471#if EV_CHECK_ENABLE
1752 /* queue check watchers, to be executed first */ 2472 /* queue check watchers, to be executed first */
1753 if (expect_false (checkcnt)) 2473 if (expect_false (checkcnt))
1754 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2474 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2475#endif
1755 2476
1756 call_pending (EV_A); 2477 EV_INVOKE_PENDING;
1757 } 2478 }
1758 while (expect_true ( 2479 while (expect_true (
1759 activecnt 2480 activecnt
1760 && !loop_done 2481 && !loop_done
1761 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2482 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1762 )); 2483 ));
1763 2484
1764 if (loop_done == EVUNLOOP_ONE) 2485 if (loop_done == EVBREAK_ONE)
1765 loop_done = EVUNLOOP_CANCEL; 2486 loop_done = EVBREAK_CANCEL;
1766}
1767 2487
2488#if EV_FEATURE_API
2489 --loop_depth;
2490#endif
2491}
2492
1768void 2493void
1769ev_unloop (EV_P_ int how) 2494ev_break (EV_P_ int how)
1770{ 2495{
1771 loop_done = how; 2496 loop_done = how;
1772} 2497}
1773 2498
2499void
2500ev_ref (EV_P)
2501{
2502 ++activecnt;
2503}
2504
2505void
2506ev_unref (EV_P)
2507{
2508 --activecnt;
2509}
2510
2511void
2512ev_now_update (EV_P)
2513{
2514 time_update (EV_A_ 1e100);
2515}
2516
2517void
2518ev_suspend (EV_P)
2519{
2520 ev_now_update (EV_A);
2521}
2522
2523void
2524ev_resume (EV_P)
2525{
2526 ev_tstamp mn_prev = mn_now;
2527
2528 ev_now_update (EV_A);
2529 timers_reschedule (EV_A_ mn_now - mn_prev);
2530#if EV_PERIODIC_ENABLE
2531 /* TODO: really do this? */
2532 periodics_reschedule (EV_A);
2533#endif
2534}
2535
1774/*****************************************************************************/ 2536/*****************************************************************************/
2537/* singly-linked list management, used when the expected list length is short */
1775 2538
1776void inline_size 2539inline_size void
1777wlist_add (WL *head, WL elem) 2540wlist_add (WL *head, WL elem)
1778{ 2541{
1779 elem->next = *head; 2542 elem->next = *head;
1780 *head = elem; 2543 *head = elem;
1781} 2544}
1782 2545
1783void inline_size 2546inline_size void
1784wlist_del (WL *head, WL elem) 2547wlist_del (WL *head, WL elem)
1785{ 2548{
1786 while (*head) 2549 while (*head)
1787 { 2550 {
1788 if (*head == elem) 2551 if (expect_true (*head == elem))
1789 { 2552 {
1790 *head = elem->next; 2553 *head = elem->next;
1791 return; 2554 break;
1792 } 2555 }
1793 2556
1794 head = &(*head)->next; 2557 head = &(*head)->next;
1795 } 2558 }
1796} 2559}
1797 2560
1798void inline_speed 2561/* internal, faster, version of ev_clear_pending */
2562inline_speed void
1799clear_pending (EV_P_ W w) 2563clear_pending (EV_P_ W w)
1800{ 2564{
1801 if (w->pending) 2565 if (w->pending)
1802 { 2566 {
1803 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2567 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1804 w->pending = 0; 2568 w->pending = 0;
1805 } 2569 }
1806} 2570}
1807 2571
1808int 2572int
… …
1812 int pending = w_->pending; 2576 int pending = w_->pending;
1813 2577
1814 if (expect_true (pending)) 2578 if (expect_true (pending))
1815 { 2579 {
1816 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2580 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2581 p->w = (W)&pending_w;
1817 w_->pending = 0; 2582 w_->pending = 0;
1818 p->w = 0;
1819 return p->events; 2583 return p->events;
1820 } 2584 }
1821 else 2585 else
1822 return 0; 2586 return 0;
1823} 2587}
1824 2588
1825void inline_size 2589inline_size void
1826pri_adjust (EV_P_ W w) 2590pri_adjust (EV_P_ W w)
1827{ 2591{
1828 int pri = w->priority; 2592 int pri = ev_priority (w);
1829 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2593 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1830 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2594 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1831 w->priority = pri; 2595 ev_set_priority (w, pri);
1832} 2596}
1833 2597
1834void inline_speed 2598inline_speed void
1835ev_start (EV_P_ W w, int active) 2599ev_start (EV_P_ W w, int active)
1836{ 2600{
1837 pri_adjust (EV_A_ w); 2601 pri_adjust (EV_A_ w);
1838 w->active = active; 2602 w->active = active;
1839 ev_ref (EV_A); 2603 ev_ref (EV_A);
1840} 2604}
1841 2605
1842void inline_size 2606inline_size void
1843ev_stop (EV_P_ W w) 2607ev_stop (EV_P_ W w)
1844{ 2608{
1845 ev_unref (EV_A); 2609 ev_unref (EV_A);
1846 w->active = 0; 2610 w->active = 0;
1847} 2611}
… …
1854 int fd = w->fd; 2618 int fd = w->fd;
1855 2619
1856 if (expect_false (ev_is_active (w))) 2620 if (expect_false (ev_is_active (w)))
1857 return; 2621 return;
1858 2622
1859 assert (("ev_io_start called with negative fd", fd >= 0)); 2623 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2624 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2625
2626 EV_FREQUENT_CHECK;
1860 2627
1861 ev_start (EV_A_ (W)w, 1); 2628 ev_start (EV_A_ (W)w, 1);
1862 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2629 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1863 wlist_add (&anfds[fd].head, (WL)w); 2630 wlist_add (&anfds[fd].head, (WL)w);
1864 2631
1865 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2632 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1866 w->events &= ~EV_IOFDSET; 2633 w->events &= ~EV__IOFDSET;
2634
2635 EV_FREQUENT_CHECK;
1867} 2636}
1868 2637
1869void noinline 2638void noinline
1870ev_io_stop (EV_P_ ev_io *w) 2639ev_io_stop (EV_P_ ev_io *w)
1871{ 2640{
1872 clear_pending (EV_A_ (W)w); 2641 clear_pending (EV_A_ (W)w);
1873 if (expect_false (!ev_is_active (w))) 2642 if (expect_false (!ev_is_active (w)))
1874 return; 2643 return;
1875 2644
1876 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2645 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2646
2647 EV_FREQUENT_CHECK;
1877 2648
1878 wlist_del (&anfds[w->fd].head, (WL)w); 2649 wlist_del (&anfds[w->fd].head, (WL)w);
1879 ev_stop (EV_A_ (W)w); 2650 ev_stop (EV_A_ (W)w);
1880 2651
1881 fd_change (EV_A_ w->fd, 1); 2652 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2653
2654 EV_FREQUENT_CHECK;
1882} 2655}
1883 2656
1884void noinline 2657void noinline
1885ev_timer_start (EV_P_ ev_timer *w) 2658ev_timer_start (EV_P_ ev_timer *w)
1886{ 2659{
1887 if (expect_false (ev_is_active (w))) 2660 if (expect_false (ev_is_active (w)))
1888 return; 2661 return;
1889 2662
1890 ev_at (w) += mn_now; 2663 ev_at (w) += mn_now;
1891 2664
1892 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2665 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1893 2666
2667 EV_FREQUENT_CHECK;
2668
2669 ++timercnt;
1894 ev_start (EV_A_ (W)w, ++timercnt); 2670 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1895 array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2); 2671 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1896 timers [timercnt] = (WT)w; 2672 ANHE_w (timers [ev_active (w)]) = (WT)w;
2673 ANHE_at_cache (timers [ev_active (w)]);
1897 upheap (timers, timercnt); 2674 upheap (timers, ev_active (w));
1898 2675
2676 EV_FREQUENT_CHECK;
2677
1899 /*assert (("internal timer heap corruption", timers [((W)w)->active] == w));*/ 2678 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1900} 2679}
1901 2680
1902void noinline 2681void noinline
1903ev_timer_stop (EV_P_ ev_timer *w) 2682ev_timer_stop (EV_P_ ev_timer *w)
1904{ 2683{
1905 clear_pending (EV_A_ (W)w); 2684 clear_pending (EV_A_ (W)w);
1906 if (expect_false (!ev_is_active (w))) 2685 if (expect_false (!ev_is_active (w)))
1907 return; 2686 return;
1908 2687
1909 assert (("internal timer heap corruption", timers [((W)w)->active] == (WT)w)); 2688 EV_FREQUENT_CHECK;
1910 2689
1911 { 2690 {
1912 int active = ((W)w)->active; 2691 int active = ev_active (w);
1913 2692
2693 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2694
2695 --timercnt;
2696
1914 if (expect_true (active < timercnt)) 2697 if (expect_true (active < timercnt + HEAP0))
1915 { 2698 {
1916 timers [active] = timers [timercnt]; 2699 timers [active] = timers [timercnt + HEAP0];
1917 adjustheap (timers, timercnt, active); 2700 adjustheap (timers, timercnt, active);
1918 } 2701 }
1919
1920 --timercnt;
1921 } 2702 }
1922 2703
1923 ev_at (w) -= mn_now; 2704 ev_at (w) -= mn_now;
1924 2705
1925 ev_stop (EV_A_ (W)w); 2706 ev_stop (EV_A_ (W)w);
2707
2708 EV_FREQUENT_CHECK;
1926} 2709}
1927 2710
1928void noinline 2711void noinline
1929ev_timer_again (EV_P_ ev_timer *w) 2712ev_timer_again (EV_P_ ev_timer *w)
1930{ 2713{
2714 EV_FREQUENT_CHECK;
2715
1931 if (ev_is_active (w)) 2716 if (ev_is_active (w))
1932 { 2717 {
1933 if (w->repeat) 2718 if (w->repeat)
1934 { 2719 {
1935 ev_at (w) = mn_now + w->repeat; 2720 ev_at (w) = mn_now + w->repeat;
2721 ANHE_at_cache (timers [ev_active (w)]);
1936 adjustheap (timers, timercnt, ((W)w)->active); 2722 adjustheap (timers, timercnt, ev_active (w));
1937 } 2723 }
1938 else 2724 else
1939 ev_timer_stop (EV_A_ w); 2725 ev_timer_stop (EV_A_ w);
1940 } 2726 }
1941 else if (w->repeat) 2727 else if (w->repeat)
1942 { 2728 {
1943 w->at = w->repeat; 2729 ev_at (w) = w->repeat;
1944 ev_timer_start (EV_A_ w); 2730 ev_timer_start (EV_A_ w);
1945 } 2731 }
2732
2733 EV_FREQUENT_CHECK;
2734}
2735
2736ev_tstamp
2737ev_timer_remaining (EV_P_ ev_timer *w)
2738{
2739 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1946} 2740}
1947 2741
1948#if EV_PERIODIC_ENABLE 2742#if EV_PERIODIC_ENABLE
1949void noinline 2743void noinline
1950ev_periodic_start (EV_P_ ev_periodic *w) 2744ev_periodic_start (EV_P_ ev_periodic *w)
… …
1954 2748
1955 if (w->reschedule_cb) 2749 if (w->reschedule_cb)
1956 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2750 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1957 else if (w->interval) 2751 else if (w->interval)
1958 { 2752 {
1959 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2753 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1960 /* this formula differs from the one in periodic_reify because we do not always round up */ 2754 /* this formula differs from the one in periodic_reify because we do not always round up */
1961 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2755 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1962 } 2756 }
1963 else 2757 else
1964 ev_at (w) = w->offset; 2758 ev_at (w) = w->offset;
1965 2759
2760 EV_FREQUENT_CHECK;
2761
2762 ++periodiccnt;
1966 ev_start (EV_A_ (W)w, ++periodiccnt); 2763 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1967 array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2); 2764 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1968 periodics [periodiccnt] = (WT)w; 2765 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1969 upheap (periodics, periodiccnt); 2766 ANHE_at_cache (periodics [ev_active (w)]);
2767 upheap (periodics, ev_active (w));
1970 2768
2769 EV_FREQUENT_CHECK;
2770
1971 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2771 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1972} 2772}
1973 2773
1974void noinline 2774void noinline
1975ev_periodic_stop (EV_P_ ev_periodic *w) 2775ev_periodic_stop (EV_P_ ev_periodic *w)
1976{ 2776{
1977 clear_pending (EV_A_ (W)w); 2777 clear_pending (EV_A_ (W)w);
1978 if (expect_false (!ev_is_active (w))) 2778 if (expect_false (!ev_is_active (w)))
1979 return; 2779 return;
1980 2780
1981 assert (("internal periodic heap corruption", periodics [((W)w)->active] == (WT)w)); 2781 EV_FREQUENT_CHECK;
1982 2782
1983 { 2783 {
1984 int active = ((W)w)->active; 2784 int active = ev_active (w);
1985 2785
2786 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2787
2788 --periodiccnt;
2789
1986 if (expect_true (active < periodiccnt)) 2790 if (expect_true (active < periodiccnt + HEAP0))
1987 { 2791 {
1988 periodics [active] = periodics [periodiccnt]; 2792 periodics [active] = periodics [periodiccnt + HEAP0];
1989 adjustheap (periodics, periodiccnt, active); 2793 adjustheap (periodics, periodiccnt, active);
1990 } 2794 }
1991
1992 --periodiccnt;
1993 } 2795 }
1994 2796
1995 ev_stop (EV_A_ (W)w); 2797 ev_stop (EV_A_ (W)w);
2798
2799 EV_FREQUENT_CHECK;
1996} 2800}
1997 2801
1998void noinline 2802void noinline
1999ev_periodic_again (EV_P_ ev_periodic *w) 2803ev_periodic_again (EV_P_ ev_periodic *w)
2000{ 2804{
… …
2006 2810
2007#ifndef SA_RESTART 2811#ifndef SA_RESTART
2008# define SA_RESTART 0 2812# define SA_RESTART 0
2009#endif 2813#endif
2010 2814
2815#if EV_SIGNAL_ENABLE
2816
2011void noinline 2817void noinline
2012ev_signal_start (EV_P_ ev_signal *w) 2818ev_signal_start (EV_P_ ev_signal *w)
2013{ 2819{
2014#if EV_MULTIPLICITY
2015 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2016#endif
2017 if (expect_false (ev_is_active (w))) 2820 if (expect_false (ev_is_active (w)))
2018 return; 2821 return;
2019 2822
2020 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2823 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2021 2824
2022 evpipe_init (EV_A); 2825#if EV_MULTIPLICITY
2826 assert (("libev: a signal must not be attached to two different loops",
2827 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2023 2828
2829 signals [w->signum - 1].loop = EV_A;
2830#endif
2831
2832 EV_FREQUENT_CHECK;
2833
2834#if EV_USE_SIGNALFD
2835 if (sigfd == -2)
2024 { 2836 {
2025#ifndef _WIN32 2837 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2026 sigset_t full, prev; 2838 if (sigfd < 0 && errno == EINVAL)
2027 sigfillset (&full); 2839 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2028 sigprocmask (SIG_SETMASK, &full, &prev);
2029#endif
2030 2840
2031 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2841 if (sigfd >= 0)
2842 {
2843 fd_intern (sigfd); /* doing it twice will not hurt */
2032 2844
2033#ifndef _WIN32 2845 sigemptyset (&sigfd_set);
2034 sigprocmask (SIG_SETMASK, &prev, 0); 2846
2035#endif 2847 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2848 ev_set_priority (&sigfd_w, EV_MAXPRI);
2849 ev_io_start (EV_A_ &sigfd_w);
2850 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2851 }
2036 } 2852 }
2853
2854 if (sigfd >= 0)
2855 {
2856 /* TODO: check .head */
2857 sigaddset (&sigfd_set, w->signum);
2858 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2859
2860 signalfd (sigfd, &sigfd_set, 0);
2861 }
2862#endif
2037 2863
2038 ev_start (EV_A_ (W)w, 1); 2864 ev_start (EV_A_ (W)w, 1);
2039 wlist_add (&signals [w->signum - 1].head, (WL)w); 2865 wlist_add (&signals [w->signum - 1].head, (WL)w);
2040 2866
2041 if (!((WL)w)->next) 2867 if (!((WL)w)->next)
2868# if EV_USE_SIGNALFD
2869 if (sigfd < 0) /*TODO*/
2870# endif
2042 { 2871 {
2043#if _WIN32 2872# ifdef _WIN32
2873 evpipe_init (EV_A);
2874
2044 signal (w->signum, ev_sighandler); 2875 signal (w->signum, ev_sighandler);
2045#else 2876# else
2046 struct sigaction sa; 2877 struct sigaction sa;
2878
2879 evpipe_init (EV_A);
2880
2047 sa.sa_handler = ev_sighandler; 2881 sa.sa_handler = ev_sighandler;
2048 sigfillset (&sa.sa_mask); 2882 sigfillset (&sa.sa_mask);
2049 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2883 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2050 sigaction (w->signum, &sa, 0); 2884 sigaction (w->signum, &sa, 0);
2885
2886 sigemptyset (&sa.sa_mask);
2887 sigaddset (&sa.sa_mask, w->signum);
2888 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2051#endif 2889#endif
2052 } 2890 }
2891
2892 EV_FREQUENT_CHECK;
2053} 2893}
2054 2894
2055void noinline 2895void noinline
2056ev_signal_stop (EV_P_ ev_signal *w) 2896ev_signal_stop (EV_P_ ev_signal *w)
2057{ 2897{
2058 clear_pending (EV_A_ (W)w); 2898 clear_pending (EV_A_ (W)w);
2059 if (expect_false (!ev_is_active (w))) 2899 if (expect_false (!ev_is_active (w)))
2060 return; 2900 return;
2061 2901
2902 EV_FREQUENT_CHECK;
2903
2062 wlist_del (&signals [w->signum - 1].head, (WL)w); 2904 wlist_del (&signals [w->signum - 1].head, (WL)w);
2063 ev_stop (EV_A_ (W)w); 2905 ev_stop (EV_A_ (W)w);
2064 2906
2065 if (!signals [w->signum - 1].head) 2907 if (!signals [w->signum - 1].head)
2908 {
2909#if EV_MULTIPLICITY
2910 signals [w->signum - 1].loop = 0; /* unattach from signal */
2911#endif
2912#if EV_USE_SIGNALFD
2913 if (sigfd >= 0)
2914 {
2915 sigset_t ss;
2916
2917 sigemptyset (&ss);
2918 sigaddset (&ss, w->signum);
2919 sigdelset (&sigfd_set, w->signum);
2920
2921 signalfd (sigfd, &sigfd_set, 0);
2922 sigprocmask (SIG_UNBLOCK, &ss, 0);
2923 }
2924 else
2925#endif
2066 signal (w->signum, SIG_DFL); 2926 signal (w->signum, SIG_DFL);
2927 }
2928
2929 EV_FREQUENT_CHECK;
2067} 2930}
2931
2932#endif
2933
2934#if EV_CHILD_ENABLE
2068 2935
2069void 2936void
2070ev_child_start (EV_P_ ev_child *w) 2937ev_child_start (EV_P_ ev_child *w)
2071{ 2938{
2072#if EV_MULTIPLICITY 2939#if EV_MULTIPLICITY
2073 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2940 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2074#endif 2941#endif
2075 if (expect_false (ev_is_active (w))) 2942 if (expect_false (ev_is_active (w)))
2076 return; 2943 return;
2077 2944
2945 EV_FREQUENT_CHECK;
2946
2078 ev_start (EV_A_ (W)w, 1); 2947 ev_start (EV_A_ (W)w, 1);
2079 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2948 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2949
2950 EV_FREQUENT_CHECK;
2080} 2951}
2081 2952
2082void 2953void
2083ev_child_stop (EV_P_ ev_child *w) 2954ev_child_stop (EV_P_ ev_child *w)
2084{ 2955{
2085 clear_pending (EV_A_ (W)w); 2956 clear_pending (EV_A_ (W)w);
2086 if (expect_false (!ev_is_active (w))) 2957 if (expect_false (!ev_is_active (w)))
2087 return; 2958 return;
2088 2959
2960 EV_FREQUENT_CHECK;
2961
2089 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2962 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2090 ev_stop (EV_A_ (W)w); 2963 ev_stop (EV_A_ (W)w);
2964
2965 EV_FREQUENT_CHECK;
2091} 2966}
2967
2968#endif
2092 2969
2093#if EV_STAT_ENABLE 2970#if EV_STAT_ENABLE
2094 2971
2095# ifdef _WIN32 2972# ifdef _WIN32
2096# undef lstat 2973# undef lstat
2097# define lstat(a,b) _stati64 (a,b) 2974# define lstat(a,b) _stati64 (a,b)
2098# endif 2975# endif
2099 2976
2100#define DEF_STAT_INTERVAL 5.0074891 2977#define DEF_STAT_INTERVAL 5.0074891
2978#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2101#define MIN_STAT_INTERVAL 0.1074891 2979#define MIN_STAT_INTERVAL 0.1074891
2102 2980
2103static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2981static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2104 2982
2105#if EV_USE_INOTIFY 2983#if EV_USE_INOTIFY
2106# define EV_INOTIFY_BUFSIZE 8192 2984
2985/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2986# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2107 2987
2108static void noinline 2988static void noinline
2109infy_add (EV_P_ ev_stat *w) 2989infy_add (EV_P_ ev_stat *w)
2110{ 2990{
2111 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); 2991 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);
2112 2992
2113 if (w->wd < 0) 2993 if (w->wd >= 0)
2994 {
2995 struct statfs sfs;
2996
2997 /* now local changes will be tracked by inotify, but remote changes won't */
2998 /* unless the filesystem is known to be local, we therefore still poll */
2999 /* also do poll on <2.6.25, but with normal frequency */
3000
3001 if (!fs_2625)
3002 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3003 else if (!statfs (w->path, &sfs)
3004 && (sfs.f_type == 0x1373 /* devfs */
3005 || sfs.f_type == 0xEF53 /* ext2/3 */
3006 || sfs.f_type == 0x3153464a /* jfs */
3007 || sfs.f_type == 0x52654973 /* reiser3 */
3008 || sfs.f_type == 0x01021994 /* tempfs */
3009 || sfs.f_type == 0x58465342 /* xfs */))
3010 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3011 else
3012 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2114 { 3013 }
2115 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3014 else
3015 {
3016 /* can't use inotify, continue to stat */
3017 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2116 3018
2117 /* monitor some parent directory for speedup hints */ 3019 /* if path is not there, monitor some parent directory for speedup hints */
3020 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3021 /* but an efficiency issue only */
2118 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3022 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2119 { 3023 {
2120 char path [4096]; 3024 char path [4096];
2121 strcpy (path, w->path); 3025 strcpy (path, w->path);
2122 3026
… …
2125 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3029 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2126 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3030 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2127 3031
2128 char *pend = strrchr (path, '/'); 3032 char *pend = strrchr (path, '/');
2129 3033
2130 if (!pend) 3034 if (!pend || pend == path)
2131 break; /* whoops, no '/', complain to your admin */ 3035 break;
2132 3036
2133 *pend = 0; 3037 *pend = 0;
2134 w->wd = inotify_add_watch (fs_fd, path, mask); 3038 w->wd = inotify_add_watch (fs_fd, path, mask);
2135 } 3039 }
2136 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3040 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2137 } 3041 }
2138 } 3042 }
2139 else
2140 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2141 3043
2142 if (w->wd >= 0) 3044 if (w->wd >= 0)
2143 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3045 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3046
3047 /* now re-arm timer, if required */
3048 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3049 ev_timer_again (EV_A_ &w->timer);
3050 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2144} 3051}
2145 3052
2146static void noinline 3053static void noinline
2147infy_del (EV_P_ ev_stat *w) 3054infy_del (EV_P_ ev_stat *w)
2148{ 3055{
… …
2151 3058
2152 if (wd < 0) 3059 if (wd < 0)
2153 return; 3060 return;
2154 3061
2155 w->wd = -2; 3062 w->wd = -2;
2156 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3063 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2157 wlist_del (&fs_hash [slot].head, (WL)w); 3064 wlist_del (&fs_hash [slot].head, (WL)w);
2158 3065
2159 /* remove this watcher, if others are watching it, they will rearm */ 3066 /* remove this watcher, if others are watching it, they will rearm */
2160 inotify_rm_watch (fs_fd, wd); 3067 inotify_rm_watch (fs_fd, wd);
2161} 3068}
2162 3069
2163static void noinline 3070static void noinline
2164infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3071infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2165{ 3072{
2166 if (slot < 0) 3073 if (slot < 0)
2167 /* overflow, need to check for all hahs slots */ 3074 /* overflow, need to check for all hash slots */
2168 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3075 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2169 infy_wd (EV_A_ slot, wd, ev); 3076 infy_wd (EV_A_ slot, wd, ev);
2170 else 3077 else
2171 { 3078 {
2172 WL w_; 3079 WL w_;
2173 3080
2174 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3081 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2175 { 3082 {
2176 ev_stat *w = (ev_stat *)w_; 3083 ev_stat *w = (ev_stat *)w_;
2177 w_ = w_->next; /* lets us remove this watcher and all before it */ 3084 w_ = w_->next; /* lets us remove this watcher and all before it */
2178 3085
2179 if (w->wd == wd || wd == -1) 3086 if (w->wd == wd || wd == -1)
2180 { 3087 {
2181 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3088 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2182 { 3089 {
3090 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2183 w->wd = -1; 3091 w->wd = -1;
2184 infy_add (EV_A_ w); /* re-add, no matter what */ 3092 infy_add (EV_A_ w); /* re-add, no matter what */
2185 } 3093 }
2186 3094
2187 stat_timer_cb (EV_A_ &w->timer, 0); 3095 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2192 3100
2193static void 3101static void
2194infy_cb (EV_P_ ev_io *w, int revents) 3102infy_cb (EV_P_ ev_io *w, int revents)
2195{ 3103{
2196 char buf [EV_INOTIFY_BUFSIZE]; 3104 char buf [EV_INOTIFY_BUFSIZE];
2197 struct inotify_event *ev = (struct inotify_event *)buf;
2198 int ofs; 3105 int ofs;
2199 int len = read (fs_fd, buf, sizeof (buf)); 3106 int len = read (fs_fd, buf, sizeof (buf));
2200 3107
2201 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3108 for (ofs = 0; ofs < len; )
3109 {
3110 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2202 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3111 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3112 ofs += sizeof (struct inotify_event) + ev->len;
3113 }
2203} 3114}
2204 3115
2205void inline_size 3116inline_size void
3117ev_check_2625 (EV_P)
3118{
3119 /* kernels < 2.6.25 are borked
3120 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3121 */
3122 if (ev_linux_version () < 0x020619)
3123 return;
3124
3125 fs_2625 = 1;
3126}
3127
3128inline_size int
3129infy_newfd (void)
3130{
3131#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3132 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3133 if (fd >= 0)
3134 return fd;
3135#endif
3136 return inotify_init ();
3137}
3138
3139inline_size void
2206infy_init (EV_P) 3140infy_init (EV_P)
2207{ 3141{
2208 if (fs_fd != -2) 3142 if (fs_fd != -2)
2209 return; 3143 return;
2210 3144
3145 fs_fd = -1;
3146
3147 ev_check_2625 (EV_A);
3148
2211 fs_fd = inotify_init (); 3149 fs_fd = infy_newfd ();
2212 3150
2213 if (fs_fd >= 0) 3151 if (fs_fd >= 0)
2214 { 3152 {
3153 fd_intern (fs_fd);
2215 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3154 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2216 ev_set_priority (&fs_w, EV_MAXPRI); 3155 ev_set_priority (&fs_w, EV_MAXPRI);
2217 ev_io_start (EV_A_ &fs_w); 3156 ev_io_start (EV_A_ &fs_w);
3157 ev_unref (EV_A);
2218 } 3158 }
2219} 3159}
2220 3160
2221void inline_size 3161inline_size void
2222infy_fork (EV_P) 3162infy_fork (EV_P)
2223{ 3163{
2224 int slot; 3164 int slot;
2225 3165
2226 if (fs_fd < 0) 3166 if (fs_fd < 0)
2227 return; 3167 return;
2228 3168
3169 ev_ref (EV_A);
3170 ev_io_stop (EV_A_ &fs_w);
2229 close (fs_fd); 3171 close (fs_fd);
2230 fs_fd = inotify_init (); 3172 fs_fd = infy_newfd ();
2231 3173
3174 if (fs_fd >= 0)
3175 {
3176 fd_intern (fs_fd);
3177 ev_io_set (&fs_w, fs_fd, EV_READ);
3178 ev_io_start (EV_A_ &fs_w);
3179 ev_unref (EV_A);
3180 }
3181
2232 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3182 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2233 { 3183 {
2234 WL w_ = fs_hash [slot].head; 3184 WL w_ = fs_hash [slot].head;
2235 fs_hash [slot].head = 0; 3185 fs_hash [slot].head = 0;
2236 3186
2237 while (w_) 3187 while (w_)
… …
2242 w->wd = -1; 3192 w->wd = -1;
2243 3193
2244 if (fs_fd >= 0) 3194 if (fs_fd >= 0)
2245 infy_add (EV_A_ w); /* re-add, no matter what */ 3195 infy_add (EV_A_ w); /* re-add, no matter what */
2246 else 3196 else
3197 {
3198 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3199 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2247 ev_timer_start (EV_A_ &w->timer); 3200 ev_timer_again (EV_A_ &w->timer);
3201 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3202 }
2248 } 3203 }
2249
2250 } 3204 }
2251} 3205}
2252 3206
3207#endif
3208
3209#ifdef _WIN32
3210# define EV_LSTAT(p,b) _stati64 (p, b)
3211#else
3212# define EV_LSTAT(p,b) lstat (p, b)
2253#endif 3213#endif
2254 3214
2255void 3215void
2256ev_stat_stat (EV_P_ ev_stat *w) 3216ev_stat_stat (EV_P_ ev_stat *w)
2257{ 3217{
… …
2264static void noinline 3224static void noinline
2265stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3225stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2266{ 3226{
2267 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3227 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2268 3228
2269 /* we copy this here each the time so that */ 3229 ev_statdata prev = w->attr;
2270 /* prev has the old value when the callback gets invoked */
2271 w->prev = w->attr;
2272 ev_stat_stat (EV_A_ w); 3230 ev_stat_stat (EV_A_ w);
2273 3231
2274 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3232 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2275 if ( 3233 if (
2276 w->prev.st_dev != w->attr.st_dev 3234 prev.st_dev != w->attr.st_dev
2277 || w->prev.st_ino != w->attr.st_ino 3235 || prev.st_ino != w->attr.st_ino
2278 || w->prev.st_mode != w->attr.st_mode 3236 || prev.st_mode != w->attr.st_mode
2279 || w->prev.st_nlink != w->attr.st_nlink 3237 || prev.st_nlink != w->attr.st_nlink
2280 || w->prev.st_uid != w->attr.st_uid 3238 || prev.st_uid != w->attr.st_uid
2281 || w->prev.st_gid != w->attr.st_gid 3239 || prev.st_gid != w->attr.st_gid
2282 || w->prev.st_rdev != w->attr.st_rdev 3240 || prev.st_rdev != w->attr.st_rdev
2283 || w->prev.st_size != w->attr.st_size 3241 || prev.st_size != w->attr.st_size
2284 || w->prev.st_atime != w->attr.st_atime 3242 || prev.st_atime != w->attr.st_atime
2285 || w->prev.st_mtime != w->attr.st_mtime 3243 || prev.st_mtime != w->attr.st_mtime
2286 || w->prev.st_ctime != w->attr.st_ctime 3244 || prev.st_ctime != w->attr.st_ctime
2287 ) { 3245 ) {
3246 /* we only update w->prev on actual differences */
3247 /* in case we test more often than invoke the callback, */
3248 /* to ensure that prev is always different to attr */
3249 w->prev = prev;
3250
2288 #if EV_USE_INOTIFY 3251 #if EV_USE_INOTIFY
3252 if (fs_fd >= 0)
3253 {
2289 infy_del (EV_A_ w); 3254 infy_del (EV_A_ w);
2290 infy_add (EV_A_ w); 3255 infy_add (EV_A_ w);
2291 ev_stat_stat (EV_A_ w); /* avoid race... */ 3256 ev_stat_stat (EV_A_ w); /* avoid race... */
3257 }
2292 #endif 3258 #endif
2293 3259
2294 ev_feed_event (EV_A_ w, EV_STAT); 3260 ev_feed_event (EV_A_ w, EV_STAT);
2295 } 3261 }
2296} 3262}
… …
2299ev_stat_start (EV_P_ ev_stat *w) 3265ev_stat_start (EV_P_ ev_stat *w)
2300{ 3266{
2301 if (expect_false (ev_is_active (w))) 3267 if (expect_false (ev_is_active (w)))
2302 return; 3268 return;
2303 3269
2304 /* since we use memcmp, we need to clear any padding data etc. */
2305 memset (&w->prev, 0, sizeof (ev_statdata));
2306 memset (&w->attr, 0, sizeof (ev_statdata));
2307
2308 ev_stat_stat (EV_A_ w); 3270 ev_stat_stat (EV_A_ w);
2309 3271
3272 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2310 if (w->interval < MIN_STAT_INTERVAL) 3273 w->interval = MIN_STAT_INTERVAL;
2311 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2312 3274
2313 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3275 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2314 ev_set_priority (&w->timer, ev_priority (w)); 3276 ev_set_priority (&w->timer, ev_priority (w));
2315 3277
2316#if EV_USE_INOTIFY 3278#if EV_USE_INOTIFY
2317 infy_init (EV_A); 3279 infy_init (EV_A);
2318 3280
2319 if (fs_fd >= 0) 3281 if (fs_fd >= 0)
2320 infy_add (EV_A_ w); 3282 infy_add (EV_A_ w);
2321 else 3283 else
2322#endif 3284#endif
3285 {
2323 ev_timer_start (EV_A_ &w->timer); 3286 ev_timer_again (EV_A_ &w->timer);
3287 ev_unref (EV_A);
3288 }
2324 3289
2325 ev_start (EV_A_ (W)w, 1); 3290 ev_start (EV_A_ (W)w, 1);
3291
3292 EV_FREQUENT_CHECK;
2326} 3293}
2327 3294
2328void 3295void
2329ev_stat_stop (EV_P_ ev_stat *w) 3296ev_stat_stop (EV_P_ ev_stat *w)
2330{ 3297{
2331 clear_pending (EV_A_ (W)w); 3298 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w))) 3299 if (expect_false (!ev_is_active (w)))
2333 return; 3300 return;
2334 3301
3302 EV_FREQUENT_CHECK;
3303
2335#if EV_USE_INOTIFY 3304#if EV_USE_INOTIFY
2336 infy_del (EV_A_ w); 3305 infy_del (EV_A_ w);
2337#endif 3306#endif
3307
3308 if (ev_is_active (&w->timer))
3309 {
3310 ev_ref (EV_A);
2338 ev_timer_stop (EV_A_ &w->timer); 3311 ev_timer_stop (EV_A_ &w->timer);
3312 }
2339 3313
2340 ev_stop (EV_A_ (W)w); 3314 ev_stop (EV_A_ (W)w);
3315
3316 EV_FREQUENT_CHECK;
2341} 3317}
2342#endif 3318#endif
2343 3319
2344#if EV_IDLE_ENABLE 3320#if EV_IDLE_ENABLE
2345void 3321void
… …
2347{ 3323{
2348 if (expect_false (ev_is_active (w))) 3324 if (expect_false (ev_is_active (w)))
2349 return; 3325 return;
2350 3326
2351 pri_adjust (EV_A_ (W)w); 3327 pri_adjust (EV_A_ (W)w);
3328
3329 EV_FREQUENT_CHECK;
2352 3330
2353 { 3331 {
2354 int active = ++idlecnt [ABSPRI (w)]; 3332 int active = ++idlecnt [ABSPRI (w)];
2355 3333
2356 ++idleall; 3334 ++idleall;
2357 ev_start (EV_A_ (W)w, active); 3335 ev_start (EV_A_ (W)w, active);
2358 3336
2359 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3337 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2360 idles [ABSPRI (w)][active - 1] = w; 3338 idles [ABSPRI (w)][active - 1] = w;
2361 } 3339 }
3340
3341 EV_FREQUENT_CHECK;
2362} 3342}
2363 3343
2364void 3344void
2365ev_idle_stop (EV_P_ ev_idle *w) 3345ev_idle_stop (EV_P_ ev_idle *w)
2366{ 3346{
2367 clear_pending (EV_A_ (W)w); 3347 clear_pending (EV_A_ (W)w);
2368 if (expect_false (!ev_is_active (w))) 3348 if (expect_false (!ev_is_active (w)))
2369 return; 3349 return;
2370 3350
3351 EV_FREQUENT_CHECK;
3352
2371 { 3353 {
2372 int active = ((W)w)->active; 3354 int active = ev_active (w);
2373 3355
2374 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3356 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2375 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3357 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2376 3358
2377 ev_stop (EV_A_ (W)w); 3359 ev_stop (EV_A_ (W)w);
2378 --idleall; 3360 --idleall;
2379 } 3361 }
2380}
2381#endif
2382 3362
3363 EV_FREQUENT_CHECK;
3364}
3365#endif
3366
3367#if EV_PREPARE_ENABLE
2383void 3368void
2384ev_prepare_start (EV_P_ ev_prepare *w) 3369ev_prepare_start (EV_P_ ev_prepare *w)
2385{ 3370{
2386 if (expect_false (ev_is_active (w))) 3371 if (expect_false (ev_is_active (w)))
2387 return; 3372 return;
3373
3374 EV_FREQUENT_CHECK;
2388 3375
2389 ev_start (EV_A_ (W)w, ++preparecnt); 3376 ev_start (EV_A_ (W)w, ++preparecnt);
2390 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3377 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2391 prepares [preparecnt - 1] = w; 3378 prepares [preparecnt - 1] = w;
3379
3380 EV_FREQUENT_CHECK;
2392} 3381}
2393 3382
2394void 3383void
2395ev_prepare_stop (EV_P_ ev_prepare *w) 3384ev_prepare_stop (EV_P_ ev_prepare *w)
2396{ 3385{
2397 clear_pending (EV_A_ (W)w); 3386 clear_pending (EV_A_ (W)w);
2398 if (expect_false (!ev_is_active (w))) 3387 if (expect_false (!ev_is_active (w)))
2399 return; 3388 return;
2400 3389
3390 EV_FREQUENT_CHECK;
3391
2401 { 3392 {
2402 int active = ((W)w)->active; 3393 int active = ev_active (w);
3394
2403 prepares [active - 1] = prepares [--preparecnt]; 3395 prepares [active - 1] = prepares [--preparecnt];
2404 ((W)prepares [active - 1])->active = active; 3396 ev_active (prepares [active - 1]) = active;
2405 } 3397 }
2406 3398
2407 ev_stop (EV_A_ (W)w); 3399 ev_stop (EV_A_ (W)w);
2408}
2409 3400
3401 EV_FREQUENT_CHECK;
3402}
3403#endif
3404
3405#if EV_CHECK_ENABLE
2410void 3406void
2411ev_check_start (EV_P_ ev_check *w) 3407ev_check_start (EV_P_ ev_check *w)
2412{ 3408{
2413 if (expect_false (ev_is_active (w))) 3409 if (expect_false (ev_is_active (w)))
2414 return; 3410 return;
3411
3412 EV_FREQUENT_CHECK;
2415 3413
2416 ev_start (EV_A_ (W)w, ++checkcnt); 3414 ev_start (EV_A_ (W)w, ++checkcnt);
2417 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3415 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2418 checks [checkcnt - 1] = w; 3416 checks [checkcnt - 1] = w;
3417
3418 EV_FREQUENT_CHECK;
2419} 3419}
2420 3420
2421void 3421void
2422ev_check_stop (EV_P_ ev_check *w) 3422ev_check_stop (EV_P_ ev_check *w)
2423{ 3423{
2424 clear_pending (EV_A_ (W)w); 3424 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w))) 3425 if (expect_false (!ev_is_active (w)))
2426 return; 3426 return;
2427 3427
3428 EV_FREQUENT_CHECK;
3429
2428 { 3430 {
2429 int active = ((W)w)->active; 3431 int active = ev_active (w);
3432
2430 checks [active - 1] = checks [--checkcnt]; 3433 checks [active - 1] = checks [--checkcnt];
2431 ((W)checks [active - 1])->active = active; 3434 ev_active (checks [active - 1]) = active;
2432 } 3435 }
2433 3436
2434 ev_stop (EV_A_ (W)w); 3437 ev_stop (EV_A_ (W)w);
3438
3439 EV_FREQUENT_CHECK;
2435} 3440}
3441#endif
2436 3442
2437#if EV_EMBED_ENABLE 3443#if EV_EMBED_ENABLE
2438void noinline 3444void noinline
2439ev_embed_sweep (EV_P_ ev_embed *w) 3445ev_embed_sweep (EV_P_ ev_embed *w)
2440{ 3446{
2441 ev_loop (w->other, EVLOOP_NONBLOCK); 3447 ev_run (w->other, EVRUN_NOWAIT);
2442} 3448}
2443 3449
2444static void 3450static void
2445embed_io_cb (EV_P_ ev_io *io, int revents) 3451embed_io_cb (EV_P_ ev_io *io, int revents)
2446{ 3452{
2447 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3453 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2448 3454
2449 if (ev_cb (w)) 3455 if (ev_cb (w))
2450 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3456 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2451 else 3457 else
2452 ev_loop (w->other, EVLOOP_NONBLOCK); 3458 ev_run (w->other, EVRUN_NOWAIT);
2453} 3459}
2454 3460
2455static void 3461static void
2456embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3462embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2457{ 3463{
2458 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3464 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2459 3465
2460 { 3466 {
2461 struct ev_loop *loop = w->other; 3467 EV_P = w->other;
2462 3468
2463 while (fdchangecnt) 3469 while (fdchangecnt)
2464 { 3470 {
2465 fd_reify (EV_A); 3471 fd_reify (EV_A);
2466 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3472 ev_run (EV_A_ EVRUN_NOWAIT);
2467 } 3473 }
2468 } 3474 }
3475}
3476
3477static void
3478embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3479{
3480 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3481
3482 ev_embed_stop (EV_A_ w);
3483
3484 {
3485 EV_P = w->other;
3486
3487 ev_loop_fork (EV_A);
3488 ev_run (EV_A_ EVRUN_NOWAIT);
3489 }
3490
3491 ev_embed_start (EV_A_ w);
2469} 3492}
2470 3493
2471#if 0 3494#if 0
2472static void 3495static void
2473embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3496embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2481{ 3504{
2482 if (expect_false (ev_is_active (w))) 3505 if (expect_false (ev_is_active (w)))
2483 return; 3506 return;
2484 3507
2485 { 3508 {
2486 struct ev_loop *loop = w->other; 3509 EV_P = w->other;
2487 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3510 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2488 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3511 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2489 } 3512 }
3513
3514 EV_FREQUENT_CHECK;
2490 3515
2491 ev_set_priority (&w->io, ev_priority (w)); 3516 ev_set_priority (&w->io, ev_priority (w));
2492 ev_io_start (EV_A_ &w->io); 3517 ev_io_start (EV_A_ &w->io);
2493 3518
2494 ev_prepare_init (&w->prepare, embed_prepare_cb); 3519 ev_prepare_init (&w->prepare, embed_prepare_cb);
2495 ev_set_priority (&w->prepare, EV_MINPRI); 3520 ev_set_priority (&w->prepare, EV_MINPRI);
2496 ev_prepare_start (EV_A_ &w->prepare); 3521 ev_prepare_start (EV_A_ &w->prepare);
2497 3522
3523 ev_fork_init (&w->fork, embed_fork_cb);
3524 ev_fork_start (EV_A_ &w->fork);
3525
2498 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3526 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2499 3527
2500 ev_start (EV_A_ (W)w, 1); 3528 ev_start (EV_A_ (W)w, 1);
3529
3530 EV_FREQUENT_CHECK;
2501} 3531}
2502 3532
2503void 3533void
2504ev_embed_stop (EV_P_ ev_embed *w) 3534ev_embed_stop (EV_P_ ev_embed *w)
2505{ 3535{
2506 clear_pending (EV_A_ (W)w); 3536 clear_pending (EV_A_ (W)w);
2507 if (expect_false (!ev_is_active (w))) 3537 if (expect_false (!ev_is_active (w)))
2508 return; 3538 return;
2509 3539
3540 EV_FREQUENT_CHECK;
3541
2510 ev_io_stop (EV_A_ &w->io); 3542 ev_io_stop (EV_A_ &w->io);
2511 ev_prepare_stop (EV_A_ &w->prepare); 3543 ev_prepare_stop (EV_A_ &w->prepare);
3544 ev_fork_stop (EV_A_ &w->fork);
2512 3545
2513 ev_stop (EV_A_ (W)w); 3546 ev_stop (EV_A_ (W)w);
3547
3548 EV_FREQUENT_CHECK;
2514} 3549}
2515#endif 3550#endif
2516 3551
2517#if EV_FORK_ENABLE 3552#if EV_FORK_ENABLE
2518void 3553void
2519ev_fork_start (EV_P_ ev_fork *w) 3554ev_fork_start (EV_P_ ev_fork *w)
2520{ 3555{
2521 if (expect_false (ev_is_active (w))) 3556 if (expect_false (ev_is_active (w)))
2522 return; 3557 return;
3558
3559 EV_FREQUENT_CHECK;
2523 3560
2524 ev_start (EV_A_ (W)w, ++forkcnt); 3561 ev_start (EV_A_ (W)w, ++forkcnt);
2525 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3562 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2526 forks [forkcnt - 1] = w; 3563 forks [forkcnt - 1] = w;
3564
3565 EV_FREQUENT_CHECK;
2527} 3566}
2528 3567
2529void 3568void
2530ev_fork_stop (EV_P_ ev_fork *w) 3569ev_fork_stop (EV_P_ ev_fork *w)
2531{ 3570{
2532 clear_pending (EV_A_ (W)w); 3571 clear_pending (EV_A_ (W)w);
2533 if (expect_false (!ev_is_active (w))) 3572 if (expect_false (!ev_is_active (w)))
2534 return; 3573 return;
2535 3574
3575 EV_FREQUENT_CHECK;
3576
2536 { 3577 {
2537 int active = ((W)w)->active; 3578 int active = ev_active (w);
3579
2538 forks [active - 1] = forks [--forkcnt]; 3580 forks [active - 1] = forks [--forkcnt];
2539 ((W)forks [active - 1])->active = active; 3581 ev_active (forks [active - 1]) = active;
2540 } 3582 }
2541 3583
2542 ev_stop (EV_A_ (W)w); 3584 ev_stop (EV_A_ (W)w);
2543}
2544#endif
2545 3585
3586 EV_FREQUENT_CHECK;
3587}
3588#endif
3589
2546#if EV_ASYNC_ENABLE 3590#if EV_CLEANUP_ENABLE
2547void 3591void
2548ev_async_start (EV_P_ ev_async *w) 3592ev_cleanup_start (EV_P_ ev_cleanup *w)
2549{ 3593{
2550 if (expect_false (ev_is_active (w))) 3594 if (expect_false (ev_is_active (w)))
2551 return; 3595 return;
2552 3596
3597 EV_FREQUENT_CHECK;
3598
3599 ev_start (EV_A_ (W)w, ++cleanupcnt);
3600 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3601 cleanups [cleanupcnt - 1] = w;
3602
3603 /* cleanup watchers should never keep a refcount on the loop */
3604 ev_unref (EV_A);
3605 EV_FREQUENT_CHECK;
3606}
3607
3608void
3609ev_cleanup_stop (EV_P_ ev_cleanup *w)
3610{
3611 clear_pending (EV_A_ (W)w);
3612 if (expect_false (!ev_is_active (w)))
3613 return;
3614
3615 EV_FREQUENT_CHECK;
3616 ev_ref (EV_A);
3617
3618 {
3619 int active = ev_active (w);
3620
3621 cleanups [active - 1] = cleanups [--cleanupcnt];
3622 ev_active (cleanups [active - 1]) = active;
3623 }
3624
3625 ev_stop (EV_A_ (W)w);
3626
3627 EV_FREQUENT_CHECK;
3628}
3629#endif
3630
3631#if EV_ASYNC_ENABLE
3632void
3633ev_async_start (EV_P_ ev_async *w)
3634{
3635 if (expect_false (ev_is_active (w)))
3636 return;
3637
3638 w->sent = 0;
3639
2553 evpipe_init (EV_A); 3640 evpipe_init (EV_A);
3641
3642 EV_FREQUENT_CHECK;
2554 3643
2555 ev_start (EV_A_ (W)w, ++asynccnt); 3644 ev_start (EV_A_ (W)w, ++asynccnt);
2556 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3645 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2557 asyncs [asynccnt - 1] = w; 3646 asyncs [asynccnt - 1] = w;
3647
3648 EV_FREQUENT_CHECK;
2558} 3649}
2559 3650
2560void 3651void
2561ev_async_stop (EV_P_ ev_async *w) 3652ev_async_stop (EV_P_ ev_async *w)
2562{ 3653{
2563 clear_pending (EV_A_ (W)w); 3654 clear_pending (EV_A_ (W)w);
2564 if (expect_false (!ev_is_active (w))) 3655 if (expect_false (!ev_is_active (w)))
2565 return; 3656 return;
2566 3657
3658 EV_FREQUENT_CHECK;
3659
2567 { 3660 {
2568 int active = ((W)w)->active; 3661 int active = ev_active (w);
3662
2569 asyncs [active - 1] = asyncs [--asynccnt]; 3663 asyncs [active - 1] = asyncs [--asynccnt];
2570 ((W)asyncs [active - 1])->active = active; 3664 ev_active (asyncs [active - 1]) = active;
2571 } 3665 }
2572 3666
2573 ev_stop (EV_A_ (W)w); 3667 ev_stop (EV_A_ (W)w);
3668
3669 EV_FREQUENT_CHECK;
2574} 3670}
2575 3671
2576void 3672void
2577ev_async_send (EV_P_ ev_async *w) 3673ev_async_send (EV_P_ ev_async *w)
2578{ 3674{
2579 w->sent = 1; 3675 w->sent = 1;
2580 evpipe_write (EV_A_ &gotasync); 3676 evpipe_write (EV_A_ &async_pending);
2581} 3677}
2582#endif 3678#endif
2583 3679
2584/*****************************************************************************/ 3680/*****************************************************************************/
2585 3681
… …
2595once_cb (EV_P_ struct ev_once *once, int revents) 3691once_cb (EV_P_ struct ev_once *once, int revents)
2596{ 3692{
2597 void (*cb)(int revents, void *arg) = once->cb; 3693 void (*cb)(int revents, void *arg) = once->cb;
2598 void *arg = once->arg; 3694 void *arg = once->arg;
2599 3695
2600 ev_io_stop (EV_A_ &once->io); 3696 ev_io_stop (EV_A_ &once->io);
2601 ev_timer_stop (EV_A_ &once->to); 3697 ev_timer_stop (EV_A_ &once->to);
2602 ev_free (once); 3698 ev_free (once);
2603 3699
2604 cb (revents, arg); 3700 cb (revents, arg);
2605} 3701}
2606 3702
2607static void 3703static void
2608once_cb_io (EV_P_ ev_io *w, int revents) 3704once_cb_io (EV_P_ ev_io *w, int revents)
2609{ 3705{
2610 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3706 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3707
3708 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2611} 3709}
2612 3710
2613static void 3711static void
2614once_cb_to (EV_P_ ev_timer *w, int revents) 3712once_cb_to (EV_P_ ev_timer *w, int revents)
2615{ 3713{
2616 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3714 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3715
3716 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2617} 3717}
2618 3718
2619void 3719void
2620ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3720ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2621{ 3721{
2622 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3722 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2623 3723
2624 if (expect_false (!once)) 3724 if (expect_false (!once))
2625 { 3725 {
2626 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3726 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2627 return; 3727 return;
2628 } 3728 }
2629 3729
2630 once->cb = cb; 3730 once->cb = cb;
2631 once->arg = arg; 3731 once->arg = arg;
… …
2643 ev_timer_set (&once->to, timeout, 0.); 3743 ev_timer_set (&once->to, timeout, 0.);
2644 ev_timer_start (EV_A_ &once->to); 3744 ev_timer_start (EV_A_ &once->to);
2645 } 3745 }
2646} 3746}
2647 3747
3748/*****************************************************************************/
3749
3750#if EV_WALK_ENABLE
3751void
3752ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3753{
3754 int i, j;
3755 ev_watcher_list *wl, *wn;
3756
3757 if (types & (EV_IO | EV_EMBED))
3758 for (i = 0; i < anfdmax; ++i)
3759 for (wl = anfds [i].head; wl; )
3760 {
3761 wn = wl->next;
3762
3763#if EV_EMBED_ENABLE
3764 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3765 {
3766 if (types & EV_EMBED)
3767 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3768 }
3769 else
3770#endif
3771#if EV_USE_INOTIFY
3772 if (ev_cb ((ev_io *)wl) == infy_cb)
3773 ;
3774 else
3775#endif
3776 if ((ev_io *)wl != &pipe_w)
3777 if (types & EV_IO)
3778 cb (EV_A_ EV_IO, wl);
3779
3780 wl = wn;
3781 }
3782
3783 if (types & (EV_TIMER | EV_STAT))
3784 for (i = timercnt + HEAP0; i-- > HEAP0; )
3785#if EV_STAT_ENABLE
3786 /*TODO: timer is not always active*/
3787 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3788 {
3789 if (types & EV_STAT)
3790 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3791 }
3792 else
3793#endif
3794 if (types & EV_TIMER)
3795 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3796
3797#if EV_PERIODIC_ENABLE
3798 if (types & EV_PERIODIC)
3799 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3800 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3801#endif
3802
3803#if EV_IDLE_ENABLE
3804 if (types & EV_IDLE)
3805 for (j = NUMPRI; i--; )
3806 for (i = idlecnt [j]; i--; )
3807 cb (EV_A_ EV_IDLE, idles [j][i]);
3808#endif
3809
3810#if EV_FORK_ENABLE
3811 if (types & EV_FORK)
3812 for (i = forkcnt; i--; )
3813 if (ev_cb (forks [i]) != embed_fork_cb)
3814 cb (EV_A_ EV_FORK, forks [i]);
3815#endif
3816
3817#if EV_ASYNC_ENABLE
3818 if (types & EV_ASYNC)
3819 for (i = asynccnt; i--; )
3820 cb (EV_A_ EV_ASYNC, asyncs [i]);
3821#endif
3822
3823#if EV_PREPARE_ENABLE
3824 if (types & EV_PREPARE)
3825 for (i = preparecnt; i--; )
3826# if EV_EMBED_ENABLE
3827 if (ev_cb (prepares [i]) != embed_prepare_cb)
3828# endif
3829 cb (EV_A_ EV_PREPARE, prepares [i]);
3830#endif
3831
3832#if EV_CHECK_ENABLE
3833 if (types & EV_CHECK)
3834 for (i = checkcnt; i--; )
3835 cb (EV_A_ EV_CHECK, checks [i]);
3836#endif
3837
3838#if EV_SIGNAL_ENABLE
3839 if (types & EV_SIGNAL)
3840 for (i = 0; i < EV_NSIG - 1; ++i)
3841 for (wl = signals [i].head; wl; )
3842 {
3843 wn = wl->next;
3844 cb (EV_A_ EV_SIGNAL, wl);
3845 wl = wn;
3846 }
3847#endif
3848
3849#if EV_CHILD_ENABLE
3850 if (types & EV_CHILD)
3851 for (i = (EV_PID_HASHSIZE); i--; )
3852 for (wl = childs [i]; wl; )
3853 {
3854 wn = wl->next;
3855 cb (EV_A_ EV_CHILD, wl);
3856 wl = wn;
3857 }
3858#endif
3859/* EV_STAT 0x00001000 /* stat data changed */
3860/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3861}
3862#endif
3863
2648#if EV_MULTIPLICITY 3864#if EV_MULTIPLICITY
2649 #include "ev_wrap.h" 3865 #include "ev_wrap.h"
2650#endif 3866#endif
2651 3867
2652#ifdef __cplusplus 3868EV_CPP(})
2653}
2654#endif
2655 3869

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