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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 1.366 by root, Mon Jan 10 01:58:54 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
130# endif 148# endif
131 149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
157# endif
158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
158#else 189#else
190# include <io.h>
159# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 192# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
163# endif 195# endif
196# undef EV_AVOID_STDIO
164#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
165 206
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
167 208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
236
237#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else
241# define EV_USE_CLOCK_SYSCALL 0
242# endif
243#endif
244
168#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else
169# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
250# endif
170#endif 251#endif
171 252
172#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 255#endif
175 256
176#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
258# if _POSIX_C_SOURCE >= 199309L
259# define EV_USE_NANOSLEEP EV_FEATURE_OS
260# else
177# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
262# endif
178#endif 263#endif
179 264
180#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 267#endif
183 268
184#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
185# ifdef _WIN32 270# ifdef _WIN32
186# define EV_USE_POLL 0 271# define EV_USE_POLL 0
187# else 272# else
188# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 274# endif
190#endif 275#endif
191 276
192#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 280# else
196# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
197# endif 282# endif
198#endif 283#endif
199 284
… …
205# define EV_USE_PORT 0 290# define EV_USE_PORT 0
206#endif 291#endif
207 292
208#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 296# else
212# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
213# endif 298# endif
214#endif 299#endif
215 300
216#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 303#endif
223 304
224#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 307#endif
231 308
232#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 312# else
236# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
237# endif 314# endif
238#endif 315#endif
239 316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
322# endif
323#endif
324
325#if 0 /* debugging */
326# define EV_VERIFY 3
327# define EV_USE_4HEAP 1
328# define EV_HEAP_CACHE_AT 1
329#endif
330
331#ifndef EV_VERIFY
332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
333#endif
334
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 ev_printerr (msg);
597 ev_printerr (": ");
598 ev_printerr (strerror (errno));
599 ev_printerr ("\n");
600#else
362 perror (msg); 601 perror (msg);
602#endif
363 abort (); 603 abort ();
364 } 604 }
365} 605}
366 606
367static void * 607static void *
368ev_realloc_emul (void *ptr, long size) 608ev_realloc_emul (void *ptr, long size)
369{ 609{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
370 /* some systems, notably openbsd and darwin, fail to properly 613 /* some systems, notably openbsd and darwin, fail to properly
371 * implement realloc (x, 0) (as required by both ansi c-98 and 614 * implement realloc (x, 0) (as required by both ansi c-89 and
372 * the single unix specification, so work around them here. 615 * the single unix specification, so work around them here.
373 */ 616 */
374 617
375 if (size) 618 if (size)
376 return realloc (ptr, size); 619 return realloc (ptr, size);
377 620
378 free (ptr); 621 free (ptr);
379 return 0; 622 return 0;
623#endif
380} 624}
381 625
382static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
383 627
384void 628void
… …
392{ 636{
393 ptr = alloc (ptr, size); 637 ptr = alloc (ptr, size);
394 638
395 if (!ptr && size) 639 if (!ptr && size)
396 { 640 {
641#if EV_AVOID_STDIO
642 ev_printerr ("(libev) memory allocation failed, aborting.\n");
643#else
397 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 644 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
645#endif
398 abort (); 646 abort ();
399 } 647 }
400 648
401 return ptr; 649 return ptr;
402} 650}
… …
404#define ev_malloc(size) ev_realloc (0, (size)) 652#define ev_malloc(size) ev_realloc (0, (size))
405#define ev_free(ptr) ev_realloc ((ptr), 0) 653#define ev_free(ptr) ev_realloc ((ptr), 0)
406 654
407/*****************************************************************************/ 655/*****************************************************************************/
408 656
657/* set in reify when reification needed */
658#define EV_ANFD_REIFY 1
659
660/* file descriptor info structure */
409typedef struct 661typedef struct
410{ 662{
411 WL head; 663 WL head;
412 unsigned char events; 664 unsigned char events; /* the events watched for */
665 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
666 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
413 unsigned char reify; 667 unsigned char unused;
668#if EV_USE_EPOLL
669 unsigned int egen; /* generation counter to counter epoll bugs */
670#endif
414#if EV_SELECT_IS_WINSOCKET 671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
415 SOCKET handle; 672 SOCKET handle;
416#endif 673#endif
674#if EV_USE_IOCP
675 OVERLAPPED or, ow;
676#endif
417} ANFD; 677} ANFD;
418 678
679/* stores the pending event set for a given watcher */
419typedef struct 680typedef struct
420{ 681{
421 W w; 682 W w;
422 int events; 683 int events; /* the pending event set for the given watcher */
423} ANPENDING; 684} ANPENDING;
424 685
425#if EV_USE_INOTIFY 686#if EV_USE_INOTIFY
687/* hash table entry per inotify-id */
426typedef struct 688typedef struct
427{ 689{
428 WL head; 690 WL head;
429} ANFS; 691} ANFS;
692#endif
693
694/* Heap Entry */
695#if EV_HEAP_CACHE_AT
696 /* a heap element */
697 typedef struct {
698 ev_tstamp at;
699 WT w;
700 } ANHE;
701
702 #define ANHE_w(he) (he).w /* access watcher, read-write */
703 #define ANHE_at(he) (he).at /* access cached at, read-only */
704 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
705#else
706 /* a heap element */
707 typedef WT ANHE;
708
709 #define ANHE_w(he) (he)
710 #define ANHE_at(he) (he)->at
711 #define ANHE_at_cache(he)
430#endif 712#endif
431 713
432#if EV_MULTIPLICITY 714#if EV_MULTIPLICITY
433 715
434 struct ev_loop 716 struct ev_loop
… …
453 735
454 static int ev_default_loop_ptr; 736 static int ev_default_loop_ptr;
455 737
456#endif 738#endif
457 739
740#if EV_FEATURE_API
741# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
742# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
743# define EV_INVOKE_PENDING invoke_cb (EV_A)
744#else
745# define EV_RELEASE_CB (void)0
746# define EV_ACQUIRE_CB (void)0
747# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
748#endif
749
750#define EVBREAK_RECURSE 0x80
751
458/*****************************************************************************/ 752/*****************************************************************************/
459 753
754#ifndef EV_HAVE_EV_TIME
460ev_tstamp 755ev_tstamp
461ev_time (void) 756ev_time (void)
462{ 757{
463#if EV_USE_REALTIME 758#if EV_USE_REALTIME
759 if (expect_true (have_realtime))
760 {
464 struct timespec ts; 761 struct timespec ts;
465 clock_gettime (CLOCK_REALTIME, &ts); 762 clock_gettime (CLOCK_REALTIME, &ts);
466 return ts.tv_sec + ts.tv_nsec * 1e-9; 763 return ts.tv_sec + ts.tv_nsec * 1e-9;
467#else 764 }
765#endif
766
468 struct timeval tv; 767 struct timeval tv;
469 gettimeofday (&tv, 0); 768 gettimeofday (&tv, 0);
470 return tv.tv_sec + tv.tv_usec * 1e-6; 769 return tv.tv_sec + tv.tv_usec * 1e-6;
471#endif
472} 770}
771#endif
473 772
474ev_tstamp inline_size 773inline_size ev_tstamp
475get_clock (void) 774get_clock (void)
476{ 775{
477#if EV_USE_MONOTONIC 776#if EV_USE_MONOTONIC
478 if (expect_true (have_monotonic)) 777 if (expect_true (have_monotonic))
479 { 778 {
… …
500 if (delay > 0.) 799 if (delay > 0.)
501 { 800 {
502#if EV_USE_NANOSLEEP 801#if EV_USE_NANOSLEEP
503 struct timespec ts; 802 struct timespec ts;
504 803
505 ts.tv_sec = (time_t)delay; 804 EV_TS_SET (ts, delay);
506 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
507
508 nanosleep (&ts, 0); 805 nanosleep (&ts, 0);
509#elif defined(_WIN32) 806#elif defined(_WIN32)
510 Sleep ((unsigned long)(delay * 1e3)); 807 Sleep ((unsigned long)(delay * 1e3));
511#else 808#else
512 struct timeval tv; 809 struct timeval tv;
513 810
514 tv.tv_sec = (time_t)delay; 811 /* 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); 812 /* something not guaranteed by newer posix versions, but guaranteed */
516 813 /* by older ones */
814 EV_TV_SET (tv, delay);
517 select (0, 0, 0, 0, &tv); 815 select (0, 0, 0, 0, &tv);
518#endif 816#endif
519 } 817 }
520} 818}
521 819
522/*****************************************************************************/ 820/*****************************************************************************/
523 821
524int inline_size 822#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
823
824/* find a suitable new size for the given array, */
825/* hopefully by rounding to a nice-to-malloc size */
826inline_size int
525array_nextsize (int elem, int cur, int cnt) 827array_nextsize (int elem, int cur, int cnt)
526{ 828{
527 int ncur = cur + 1; 829 int ncur = cur + 1;
528 830
529 do 831 do
530 ncur <<= 1; 832 ncur <<= 1;
531 while (cnt > ncur); 833 while (cnt > ncur);
532 834
533 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 835 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
534 if (elem * ncur > 4096) 836 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
535 { 837 {
536 ncur *= elem; 838 ncur *= elem;
537 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 839 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
538 ncur = ncur - sizeof (void *) * 4; 840 ncur = ncur - sizeof (void *) * 4;
539 ncur /= elem; 841 ncur /= elem;
540 } 842 }
541 843
542 return ncur; 844 return ncur;
… …
546array_realloc (int elem, void *base, int *cur, int cnt) 848array_realloc (int elem, void *base, int *cur, int cnt)
547{ 849{
548 *cur = array_nextsize (elem, *cur, cnt); 850 *cur = array_nextsize (elem, *cur, cnt);
549 return ev_realloc (base, elem * *cur); 851 return ev_realloc (base, elem * *cur);
550} 852}
853
854#define array_init_zero(base,count) \
855 memset ((void *)(base), 0, sizeof (*(base)) * (count))
551 856
552#define array_needsize(type,base,cur,cnt,init) \ 857#define array_needsize(type,base,cur,cnt,init) \
553 if (expect_false ((cnt) > (cur))) \ 858 if (expect_false ((cnt) > (cur))) \
554 { \ 859 { \
555 int ocur_ = (cur); \ 860 int ocur_ = (cur); \
… …
567 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 872 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
568 } 873 }
569#endif 874#endif
570 875
571#define array_free(stem, idx) \ 876#define array_free(stem, idx) \
572 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 877 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
573 878
574/*****************************************************************************/ 879/*****************************************************************************/
880
881/* dummy callback for pending events */
882static void noinline
883pendingcb (EV_P_ ev_prepare *w, int revents)
884{
885}
575 886
576void noinline 887void noinline
577ev_feed_event (EV_P_ void *w, int revents) 888ev_feed_event (EV_P_ void *w, int revents)
578{ 889{
579 W w_ = (W)w; 890 W w_ = (W)w;
… …
588 pendings [pri][w_->pending - 1].w = w_; 899 pendings [pri][w_->pending - 1].w = w_;
589 pendings [pri][w_->pending - 1].events = revents; 900 pendings [pri][w_->pending - 1].events = revents;
590 } 901 }
591} 902}
592 903
593void inline_speed 904inline_speed void
905feed_reverse (EV_P_ W w)
906{
907 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
908 rfeeds [rfeedcnt++] = w;
909}
910
911inline_size void
912feed_reverse_done (EV_P_ int revents)
913{
914 do
915 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
916 while (rfeedcnt);
917}
918
919inline_speed void
594queue_events (EV_P_ W *events, int eventcnt, int type) 920queue_events (EV_P_ W *events, int eventcnt, int type)
595{ 921{
596 int i; 922 int i;
597 923
598 for (i = 0; i < eventcnt; ++i) 924 for (i = 0; i < eventcnt; ++i)
599 ev_feed_event (EV_A_ events [i], type); 925 ev_feed_event (EV_A_ events [i], type);
600} 926}
601 927
602/*****************************************************************************/ 928/*****************************************************************************/
603 929
604void inline_size 930inline_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) 931fd_event_nocheck (EV_P_ int fd, int revents)
619{ 932{
620 ANFD *anfd = anfds + fd; 933 ANFD *anfd = anfds + fd;
621 ev_io *w; 934 ev_io *w;
622 935
623 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 936 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
627 if (ev) 940 if (ev)
628 ev_feed_event (EV_A_ (W)w, ev); 941 ev_feed_event (EV_A_ (W)w, ev);
629 } 942 }
630} 943}
631 944
945/* do not submit kernel events for fds that have reify set */
946/* because that means they changed while we were polling for new events */
947inline_speed void
948fd_event (EV_P_ int fd, int revents)
949{
950 ANFD *anfd = anfds + fd;
951
952 if (expect_true (!anfd->reify))
953 fd_event_nocheck (EV_A_ fd, revents);
954}
955
632void 956void
633ev_feed_fd_event (EV_P_ int fd, int revents) 957ev_feed_fd_event (EV_P_ int fd, int revents)
634{ 958{
635 if (fd >= 0 && fd < anfdmax) 959 if (fd >= 0 && fd < anfdmax)
636 fd_event (EV_A_ fd, revents); 960 fd_event_nocheck (EV_A_ fd, revents);
637} 961}
638 962
639void inline_size 963/* make sure the external fd watch events are in-sync */
964/* with the kernel/libev internal state */
965inline_size void
640fd_reify (EV_P) 966fd_reify (EV_P)
641{ 967{
642 int i; 968 int i;
643 969
644 for (i = 0; i < fdchangecnt; ++i) 970 for (i = 0; i < fdchangecnt; ++i)
645 { 971 {
646 int fd = fdchanges [i]; 972 int fd = fdchanges [i];
647 ANFD *anfd = anfds + fd; 973 ANFD *anfd = anfds + fd;
648 ev_io *w; 974 ev_io *w;
649 975
650 unsigned char events = 0; 976 unsigned char o_events = anfd->events;
977 unsigned char o_reify = anfd->reify;
651 978
652 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 979 anfd->reify = 0;
653 events |= (unsigned char)w->events;
654 980
655#if EV_SELECT_IS_WINSOCKET 981#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
656 if (events) 982 if (o_reify & EV__IOFDSET)
657 { 983 {
658 unsigned long argp; 984 unsigned long arg;
659 #ifdef EV_FD_TO_WIN32_HANDLE
660 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 985 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)); 986 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
987 printf ("oi %d %x\n", fd, anfd->handle);//D
665 } 988 }
666#endif 989#endif
667 990
991 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
668 { 992 {
669 unsigned char o_events = anfd->events;
670 unsigned char o_reify = anfd->reify;
671
672 anfd->reify = 0;
673 anfd->events = events; 993 anfd->events = 0;
674 994
675 if (o_events != events || o_reify & EV_IOFDSET) 995 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
996 anfd->events |= (unsigned char)w->events;
997
998 if (o_events != anfd->events)
999 o_reify = EV__IOFDSET; /* actually |= */
1000 }
1001
1002 if (o_reify & EV__IOFDSET)
676 backend_modify (EV_A_ fd, o_events, events); 1003 backend_modify (EV_A_ fd, o_events, anfd->events);
677 }
678 } 1004 }
679 1005
680 fdchangecnt = 0; 1006 fdchangecnt = 0;
681} 1007}
682 1008
683void inline_size 1009/* something about the given fd changed */
1010inline_size void
684fd_change (EV_P_ int fd, int flags) 1011fd_change (EV_P_ int fd, int flags)
685{ 1012{
686 unsigned char reify = anfds [fd].reify; 1013 unsigned char reify = anfds [fd].reify;
687 anfds [fd].reify |= flags; 1014 anfds [fd].reify |= flags;
688 1015
… …
692 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1019 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
693 fdchanges [fdchangecnt - 1] = fd; 1020 fdchanges [fdchangecnt - 1] = fd;
694 } 1021 }
695} 1022}
696 1023
697void inline_speed 1024/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1025inline_speed void
698fd_kill (EV_P_ int fd) 1026fd_kill (EV_P_ int fd)
699{ 1027{
700 ev_io *w; 1028 ev_io *w;
701 1029
702 while ((w = (ev_io *)anfds [fd].head)) 1030 while ((w = (ev_io *)anfds [fd].head))
… …
704 ev_io_stop (EV_A_ w); 1032 ev_io_stop (EV_A_ w);
705 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1033 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
706 } 1034 }
707} 1035}
708 1036
709int inline_size 1037/* check whether the given fd is actually valid, for error recovery */
1038inline_size int
710fd_valid (int fd) 1039fd_valid (int fd)
711{ 1040{
712#ifdef _WIN32 1041#ifdef _WIN32
713 return _get_osfhandle (fd) != -1; 1042 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
714#else 1043#else
715 return fcntl (fd, F_GETFD) != -1; 1044 return fcntl (fd, F_GETFD) != -1;
716#endif 1045#endif
717} 1046}
718 1047
… …
722{ 1051{
723 int fd; 1052 int fd;
724 1053
725 for (fd = 0; fd < anfdmax; ++fd) 1054 for (fd = 0; fd < anfdmax; ++fd)
726 if (anfds [fd].events) 1055 if (anfds [fd].events)
727 if (!fd_valid (fd) == -1 && errno == EBADF) 1056 if (!fd_valid (fd) && errno == EBADF)
728 fd_kill (EV_A_ fd); 1057 fd_kill (EV_A_ fd);
729} 1058}
730 1059
731/* called on ENOMEM in select/poll to kill some fds and retry */ 1060/* called on ENOMEM in select/poll to kill some fds and retry */
732static void noinline 1061static void noinline
… …
736 1065
737 for (fd = anfdmax; fd--; ) 1066 for (fd = anfdmax; fd--; )
738 if (anfds [fd].events) 1067 if (anfds [fd].events)
739 { 1068 {
740 fd_kill (EV_A_ fd); 1069 fd_kill (EV_A_ fd);
741 return; 1070 break;
742 } 1071 }
743} 1072}
744 1073
745/* usually called after fork if backend needs to re-arm all fds from scratch */ 1074/* usually called after fork if backend needs to re-arm all fds from scratch */
746static void noinline 1075static void noinline
… …
750 1079
751 for (fd = 0; fd < anfdmax; ++fd) 1080 for (fd = 0; fd < anfdmax; ++fd)
752 if (anfds [fd].events) 1081 if (anfds [fd].events)
753 { 1082 {
754 anfds [fd].events = 0; 1083 anfds [fd].events = 0;
1084 anfds [fd].emask = 0;
755 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1085 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
756 } 1086 }
757} 1087}
758 1088
759/*****************************************************************************/ 1089/* used to prepare libev internal fd's */
760 1090/* this is not fork-safe */
761/* towards the root */ 1091inline_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) 1092fd_intern (int fd)
849{ 1093{
850#ifdef _WIN32 1094#ifdef _WIN32
851 int arg = 1; 1095 unsigned long arg = 1;
852 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1096 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
853#else 1097#else
854 fcntl (fd, F_SETFD, FD_CLOEXEC); 1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
855 fcntl (fd, F_SETFL, O_NONBLOCK); 1099 fcntl (fd, F_SETFL, O_NONBLOCK);
856#endif 1100#endif
857} 1101}
858 1102
1103/*****************************************************************************/
1104
1105/*
1106 * the heap functions want a real array index. array index 0 is guaranteed to not
1107 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1108 * the branching factor of the d-tree.
1109 */
1110
1111/*
1112 * at the moment we allow libev the luxury of two heaps,
1113 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1114 * which is more cache-efficient.
1115 * the difference is about 5% with 50000+ watchers.
1116 */
1117#if EV_USE_4HEAP
1118
1119#define DHEAP 4
1120#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1121#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1122#define UPHEAP_DONE(p,k) ((p) == (k))
1123
1124/* away from the root */
1125inline_speed void
1126downheap (ANHE *heap, int N, int k)
1127{
1128 ANHE he = heap [k];
1129 ANHE *E = heap + N + HEAP0;
1130
1131 for (;;)
1132 {
1133 ev_tstamp minat;
1134 ANHE *minpos;
1135 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1136
1137 /* find minimum child */
1138 if (expect_true (pos + DHEAP - 1 < E))
1139 {
1140 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1141 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1142 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1143 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1144 }
1145 else if (pos < E)
1146 {
1147 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1148 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1149 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1150 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1151 }
1152 else
1153 break;
1154
1155 if (ANHE_at (he) <= minat)
1156 break;
1157
1158 heap [k] = *minpos;
1159 ev_active (ANHE_w (*minpos)) = k;
1160
1161 k = minpos - heap;
1162 }
1163
1164 heap [k] = he;
1165 ev_active (ANHE_w (he)) = k;
1166}
1167
1168#else /* 4HEAP */
1169
1170#define HEAP0 1
1171#define HPARENT(k) ((k) >> 1)
1172#define UPHEAP_DONE(p,k) (!(p))
1173
1174/* away from the root */
1175inline_speed void
1176downheap (ANHE *heap, int N, int k)
1177{
1178 ANHE he = heap [k];
1179
1180 for (;;)
1181 {
1182 int c = k << 1;
1183
1184 if (c >= N + HEAP0)
1185 break;
1186
1187 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1188 ? 1 : 0;
1189
1190 if (ANHE_at (he) <= ANHE_at (heap [c]))
1191 break;
1192
1193 heap [k] = heap [c];
1194 ev_active (ANHE_w (heap [k])) = k;
1195
1196 k = c;
1197 }
1198
1199 heap [k] = he;
1200 ev_active (ANHE_w (he)) = k;
1201}
1202#endif
1203
1204/* towards the root */
1205inline_speed void
1206upheap (ANHE *heap, int k)
1207{
1208 ANHE he = heap [k];
1209
1210 for (;;)
1211 {
1212 int p = HPARENT (k);
1213
1214 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1215 break;
1216
1217 heap [k] = heap [p];
1218 ev_active (ANHE_w (heap [k])) = k;
1219 k = p;
1220 }
1221
1222 heap [k] = he;
1223 ev_active (ANHE_w (he)) = k;
1224}
1225
1226/* move an element suitably so it is in a correct place */
1227inline_size void
1228adjustheap (ANHE *heap, int N, int k)
1229{
1230 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1231 upheap (heap, k);
1232 else
1233 downheap (heap, N, k);
1234}
1235
1236/* rebuild the heap: this function is used only once and executed rarely */
1237inline_size void
1238reheap (ANHE *heap, int N)
1239{
1240 int i;
1241
1242 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1243 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1244 for (i = 0; i < N; ++i)
1245 upheap (heap, i + HEAP0);
1246}
1247
1248/*****************************************************************************/
1249
1250/* associate signal watchers to a signal signal */
1251typedef struct
1252{
1253 EV_ATOMIC_T pending;
1254#if EV_MULTIPLICITY
1255 EV_P;
1256#endif
1257 WL head;
1258} ANSIG;
1259
1260static ANSIG signals [EV_NSIG - 1];
1261
1262/*****************************************************************************/
1263
1264#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1265
859static void noinline 1266static void noinline
860evpipe_init (EV_P) 1267evpipe_init (EV_P)
861{ 1268{
862 if (!ev_is_active (&pipeev)) 1269 if (!ev_is_active (&pipe_w))
863 { 1270 {
864#if EV_USE_EVENTFD 1271# if EV_USE_EVENTFD
1272 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1273 if (evfd < 0 && errno == EINVAL)
865 if ((evfd = eventfd (0, 0)) >= 0) 1274 evfd = eventfd (0, 0);
1275
1276 if (evfd >= 0)
866 { 1277 {
867 evpipe [0] = -1; 1278 evpipe [0] = -1;
868 fd_intern (evfd); 1279 fd_intern (evfd); /* doing it twice doesn't hurt */
869 ev_io_set (&pipeev, evfd, EV_READ); 1280 ev_io_set (&pipe_w, evfd, EV_READ);
870 } 1281 }
871 else 1282 else
872#endif 1283# endif
873 { 1284 {
874 while (pipe (evpipe)) 1285 while (pipe (evpipe))
875 syserr ("(libev) error creating signal/async pipe"); 1286 ev_syserr ("(libev) error creating signal/async pipe");
876 1287
877 fd_intern (evpipe [0]); 1288 fd_intern (evpipe [0]);
878 fd_intern (evpipe [1]); 1289 fd_intern (evpipe [1]);
879 ev_io_set (&pipeev, evpipe [0], EV_READ); 1290 ev_io_set (&pipe_w, evpipe [0], EV_READ);
880 } 1291 }
881 1292
882 ev_io_start (EV_A_ &pipeev); 1293 ev_io_start (EV_A_ &pipe_w);
883 ev_unref (EV_A); /* watcher should not keep loop alive */ 1294 ev_unref (EV_A); /* watcher should not keep loop alive */
884 } 1295 }
885} 1296}
886 1297
887void inline_size 1298inline_size void
888evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1299evpipe_write (EV_P_ EV_ATOMIC_T *flag)
889{ 1300{
890 if (!*flag) 1301 if (!*flag)
891 { 1302 {
892 int old_errno = errno; /* save errno because write might clobber it */ 1303 int old_errno = errno; /* save errno because write might clobber it */
1304 char dummy;
893 1305
894 *flag = 1; 1306 *flag = 1;
895 1307
896#if EV_USE_EVENTFD 1308#if EV_USE_EVENTFD
897 if (evfd >= 0) 1309 if (evfd >= 0)
… …
899 uint64_t counter = 1; 1311 uint64_t counter = 1;
900 write (evfd, &counter, sizeof (uint64_t)); 1312 write (evfd, &counter, sizeof (uint64_t));
901 } 1313 }
902 else 1314 else
903#endif 1315#endif
1316 /* win32 people keep sending patches that change this write() to send() */
1317 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1318 /* so when you think this write should be a send instead, please find out */
1319 /* where your send() is from - it's definitely not the microsoft send, and */
1320 /* tell me. thank you. */
904 write (evpipe [1], &old_errno, 1); 1321 write (evpipe [1], &dummy, 1);
905 1322
906 errno = old_errno; 1323 errno = old_errno;
907 } 1324 }
908} 1325}
909 1326
1327/* called whenever the libev signal pipe */
1328/* got some events (signal, async) */
910static void 1329static void
911pipecb (EV_P_ ev_io *iow, int revents) 1330pipecb (EV_P_ ev_io *iow, int revents)
912{ 1331{
1332 int i;
1333
913#if EV_USE_EVENTFD 1334#if EV_USE_EVENTFD
914 if (evfd >= 0) 1335 if (evfd >= 0)
915 { 1336 {
916 uint64_t counter = 1; 1337 uint64_t counter;
917 read (evfd, &counter, sizeof (uint64_t)); 1338 read (evfd, &counter, sizeof (uint64_t));
918 } 1339 }
919 else 1340 else
920#endif 1341#endif
921 { 1342 {
922 char dummy; 1343 char dummy;
1344 /* see discussion in evpipe_write when you think this read should be recv in win32 */
923 read (evpipe [0], &dummy, 1); 1345 read (evpipe [0], &dummy, 1);
924 } 1346 }
925 1347
926 if (gotsig && ev_is_default_loop (EV_A)) 1348 if (sig_pending)
927 { 1349 {
928 int signum; 1350 sig_pending = 0;
929 gotsig = 0;
930 1351
931 for (signum = signalmax; signum--; ) 1352 for (i = EV_NSIG - 1; i--; )
932 if (signals [signum].gotsig) 1353 if (expect_false (signals [i].pending))
933 ev_feed_signal_event (EV_A_ signum + 1); 1354 ev_feed_signal_event (EV_A_ i + 1);
934 } 1355 }
935 1356
936#if EV_ASYNC_ENABLE 1357#if EV_ASYNC_ENABLE
937 if (gotasync) 1358 if (async_pending)
938 { 1359 {
939 int i; 1360 async_pending = 0;
940 gotasync = 0;
941 1361
942 for (i = asynccnt; i--; ) 1362 for (i = asynccnt; i--; )
943 if (asyncs [i]->sent) 1363 if (asyncs [i]->sent)
944 { 1364 {
945 asyncs [i]->sent = 0; 1365 asyncs [i]->sent = 0;
… …
949#endif 1369#endif
950} 1370}
951 1371
952/*****************************************************************************/ 1372/*****************************************************************************/
953 1373
1374void
1375ev_feed_signal (int signum)
1376{
1377#if EV_MULTIPLICITY
1378 EV_P = signals [signum - 1].loop;
1379
1380 if (!EV_A)
1381 return;
1382#endif
1383
1384 signals [signum - 1].pending = 1;
1385 evpipe_write (EV_A_ &sig_pending);
1386}
1387
954static void 1388static void
955ev_sighandler (int signum) 1389ev_sighandler (int signum)
956{ 1390{
957#if EV_MULTIPLICITY
958 struct ev_loop *loop = &default_loop_struct;
959#endif
960
961#if _WIN32 1391#ifdef _WIN32
962 signal (signum, ev_sighandler); 1392 signal (signum, ev_sighandler);
963#endif 1393#endif
964 1394
965 signals [signum - 1].gotsig = 1; 1395 ev_feed_signal (signum);
966 evpipe_write (EV_A_ &gotsig);
967} 1396}
968 1397
969void noinline 1398void noinline
970ev_feed_signal_event (EV_P_ int signum) 1399ev_feed_signal_event (EV_P_ int signum)
971{ 1400{
972 WL w; 1401 WL w;
973 1402
1403 if (expect_false (signum <= 0 || signum > EV_NSIG))
1404 return;
1405
1406 --signum;
1407
974#if EV_MULTIPLICITY 1408#if EV_MULTIPLICITY
975 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1409 /* it is permissible to try to feed a signal to the wrong loop */
976#endif 1410 /* or, likely more useful, feeding a signal nobody is waiting for */
977 1411
978 --signum; 1412 if (expect_false (signals [signum].loop != EV_A))
979
980 if (signum < 0 || signum >= signalmax)
981 return; 1413 return;
1414#endif
982 1415
983 signals [signum].gotsig = 0; 1416 signals [signum].pending = 0;
984 1417
985 for (w = signals [signum].head; w; w = w->next) 1418 for (w = signals [signum].head; w; w = w->next)
986 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1419 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
987} 1420}
988 1421
1422#if EV_USE_SIGNALFD
1423static void
1424sigfdcb (EV_P_ ev_io *iow, int revents)
1425{
1426 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1427
1428 for (;;)
1429 {
1430 ssize_t res = read (sigfd, si, sizeof (si));
1431
1432 /* not ISO-C, as res might be -1, but works with SuS */
1433 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1434 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1435
1436 if (res < (ssize_t)sizeof (si))
1437 break;
1438 }
1439}
1440#endif
1441
1442#endif
1443
989/*****************************************************************************/ 1444/*****************************************************************************/
990 1445
1446#if EV_CHILD_ENABLE
991static WL childs [EV_PID_HASHSIZE]; 1447static WL childs [EV_PID_HASHSIZE];
992
993#ifndef _WIN32
994 1448
995static ev_signal childev; 1449static ev_signal childev;
996 1450
997#ifndef WIFCONTINUED 1451#ifndef WIFCONTINUED
998# define WIFCONTINUED(status) 0 1452# define WIFCONTINUED(status) 0
999#endif 1453#endif
1000 1454
1001void inline_speed 1455/* handle a single child status event */
1456inline_speed void
1002child_reap (EV_P_ int chain, int pid, int status) 1457child_reap (EV_P_ int chain, int pid, int status)
1003{ 1458{
1004 ev_child *w; 1459 ev_child *w;
1005 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1460 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1006 1461
1007 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1462 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1008 { 1463 {
1009 if ((w->pid == pid || !w->pid) 1464 if ((w->pid == pid || !w->pid)
1010 && (!traced || (w->flags & 1))) 1465 && (!traced || (w->flags & 1)))
1011 { 1466 {
1012 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1467 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1019 1474
1020#ifndef WCONTINUED 1475#ifndef WCONTINUED
1021# define WCONTINUED 0 1476# define WCONTINUED 0
1022#endif 1477#endif
1023 1478
1479/* called on sigchld etc., calls waitpid */
1024static void 1480static void
1025childcb (EV_P_ ev_signal *sw, int revents) 1481childcb (EV_P_ ev_signal *sw, int revents)
1026{ 1482{
1027 int pid, status; 1483 int pid, status;
1028 1484
… …
1036 /* make sure we are called again until all children have been reaped */ 1492 /* 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 */ 1493 /* 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); 1494 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1039 1495
1040 child_reap (EV_A_ pid, pid, status); 1496 child_reap (EV_A_ pid, pid, status);
1041 if (EV_PID_HASHSIZE > 1) 1497 if ((EV_PID_HASHSIZE) > 1)
1042 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1498 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1043} 1499}
1044 1500
1045#endif 1501#endif
1046 1502
1047/*****************************************************************************/ 1503/*****************************************************************************/
1048 1504
1505#if EV_USE_IOCP
1506# include "ev_iocp.c"
1507#endif
1049#if EV_USE_PORT 1508#if EV_USE_PORT
1050# include "ev_port.c" 1509# include "ev_port.c"
1051#endif 1510#endif
1052#if EV_USE_KQUEUE 1511#if EV_USE_KQUEUE
1053# include "ev_kqueue.c" 1512# include "ev_kqueue.c"
… …
1109 /* kqueue is borked on everything but netbsd apparently */ 1568 /* kqueue is borked on everything but netbsd apparently */
1110 /* it usually doesn't work correctly on anything but sockets and pipes */ 1569 /* it usually doesn't work correctly on anything but sockets and pipes */
1111 flags &= ~EVBACKEND_KQUEUE; 1570 flags &= ~EVBACKEND_KQUEUE;
1112#endif 1571#endif
1113#ifdef __APPLE__ 1572#ifdef __APPLE__
1114 // flags &= ~EVBACKEND_KQUEUE; for documentation 1573 /* only select works correctly on that "unix-certified" platform */
1115 flags &= ~EVBACKEND_POLL; 1574 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1575 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1576#endif
1577#ifdef __FreeBSD__
1578 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1116#endif 1579#endif
1117 1580
1118 return flags; 1581 return flags;
1119} 1582}
1120 1583
… …
1122ev_embeddable_backends (void) 1585ev_embeddable_backends (void)
1123{ 1586{
1124 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1587 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1125 1588
1126 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1589 /* 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 */ 1590 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1128 flags &= ~EVBACKEND_EPOLL; 1591 flags &= ~EVBACKEND_EPOLL;
1129 1592
1130 return flags; 1593 return flags;
1131} 1594}
1132 1595
1133unsigned int 1596unsigned int
1134ev_backend (EV_P) 1597ev_backend (EV_P)
1135{ 1598{
1136 return backend; 1599 return backend;
1137} 1600}
1138 1601
1602#if EV_FEATURE_API
1139unsigned int 1603unsigned int
1140ev_loop_count (EV_P) 1604ev_iteration (EV_P)
1141{ 1605{
1142 return loop_count; 1606 return loop_count;
1143} 1607}
1144 1608
1609unsigned int
1610ev_depth (EV_P)
1611{
1612 return loop_depth;
1613}
1614
1145void 1615void
1146ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1616ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1147{ 1617{
1148 io_blocktime = interval; 1618 io_blocktime = interval;
1149} 1619}
… …
1152ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1622ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1153{ 1623{
1154 timeout_blocktime = interval; 1624 timeout_blocktime = interval;
1155} 1625}
1156 1626
1627void
1628ev_set_userdata (EV_P_ void *data)
1629{
1630 userdata = data;
1631}
1632
1633void *
1634ev_userdata (EV_P)
1635{
1636 return userdata;
1637}
1638
1639void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1640{
1641 invoke_cb = invoke_pending_cb;
1642}
1643
1644void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1645{
1646 release_cb = release;
1647 acquire_cb = acquire;
1648}
1649#endif
1650
1651/* initialise a loop structure, must be zero-initialised */
1157static void noinline 1652static void noinline
1158loop_init (EV_P_ unsigned int flags) 1653loop_init (EV_P_ unsigned int flags)
1159{ 1654{
1160 if (!backend) 1655 if (!backend)
1161 { 1656 {
1657 origflags = flags;
1658
1659#if EV_USE_REALTIME
1660 if (!have_realtime)
1661 {
1662 struct timespec ts;
1663
1664 if (!clock_gettime (CLOCK_REALTIME, &ts))
1665 have_realtime = 1;
1666 }
1667#endif
1668
1162#if EV_USE_MONOTONIC 1669#if EV_USE_MONOTONIC
1670 if (!have_monotonic)
1163 { 1671 {
1164 struct timespec ts; 1672 struct timespec ts;
1673
1165 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1674 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1166 have_monotonic = 1; 1675 have_monotonic = 1;
1167 } 1676 }
1168#endif 1677#endif
1678
1679 /* pid check not overridable via env */
1680#ifndef _WIN32
1681 if (flags & EVFLAG_FORKCHECK)
1682 curpid = getpid ();
1683#endif
1684
1685 if (!(flags & EVFLAG_NOENV)
1686 && !enable_secure ()
1687 && getenv ("LIBEV_FLAGS"))
1688 flags = atoi (getenv ("LIBEV_FLAGS"));
1169 1689
1170 ev_rt_now = ev_time (); 1690 ev_rt_now = ev_time ();
1171 mn_now = get_clock (); 1691 mn_now = get_clock ();
1172 now_floor = mn_now; 1692 now_floor = mn_now;
1173 rtmn_diff = ev_rt_now - mn_now; 1693 rtmn_diff = ev_rt_now - mn_now;
1694#if EV_FEATURE_API
1695 invoke_cb = ev_invoke_pending;
1696#endif
1174 1697
1175 io_blocktime = 0.; 1698 io_blocktime = 0.;
1176 timeout_blocktime = 0.; 1699 timeout_blocktime = 0.;
1177 backend = 0; 1700 backend = 0;
1178 backend_fd = -1; 1701 backend_fd = -1;
1179 gotasync = 0; 1702 sig_pending = 0;
1703#if EV_ASYNC_ENABLE
1704 async_pending = 0;
1705#endif
1180#if EV_USE_INOTIFY 1706#if EV_USE_INOTIFY
1181 fs_fd = -2; 1707 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1182#endif 1708#endif
1183 1709#if EV_USE_SIGNALFD
1184 /* pid check not overridable via env */ 1710 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1185#ifndef _WIN32
1186 if (flags & EVFLAG_FORKCHECK)
1187 curpid = getpid ();
1188#endif 1711#endif
1189 1712
1190 if (!(flags & EVFLAG_NOENV) 1713 if (!(flags & EVBACKEND_MASK))
1191 && !enable_secure ()
1192 && getenv ("LIBEV_FLAGS"))
1193 flags = atoi (getenv ("LIBEV_FLAGS"));
1194
1195 if (!(flags & 0x0000ffffU))
1196 flags |= ev_recommended_backends (); 1714 flags |= ev_recommended_backends ();
1197 1715
1716#if EV_USE_IOCP
1717 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1718#endif
1198#if EV_USE_PORT 1719#if EV_USE_PORT
1199 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1720 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1200#endif 1721#endif
1201#if EV_USE_KQUEUE 1722#if EV_USE_KQUEUE
1202 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1209#endif 1730#endif
1210#if EV_USE_SELECT 1731#if EV_USE_SELECT
1211 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1732 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1212#endif 1733#endif
1213 1734
1735 ev_prepare_init (&pending_w, pendingcb);
1736
1737#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1214 ev_init (&pipeev, pipecb); 1738 ev_init (&pipe_w, pipecb);
1215 ev_set_priority (&pipeev, EV_MAXPRI); 1739 ev_set_priority (&pipe_w, EV_MAXPRI);
1740#endif
1216 } 1741 }
1217} 1742}
1218 1743
1219static void noinline 1744/* free up a loop structure */
1745void
1220loop_destroy (EV_P) 1746ev_loop_destroy (EV_P)
1221{ 1747{
1222 int i; 1748 int i;
1223 1749
1750#if EV_MULTIPLICITY
1751 /* mimic free (0) */
1752 if (!EV_A)
1753 return;
1754#endif
1755
1756#if EV_CLEANUP_ENABLE
1757 /* queue cleanup watchers (and execute them) */
1758 if (expect_false (cleanupcnt))
1759 {
1760 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1761 EV_INVOKE_PENDING;
1762 }
1763#endif
1764
1765#if EV_CHILD_ENABLE
1766 if (ev_is_active (&childev))
1767 {
1768 ev_ref (EV_A); /* child watcher */
1769 ev_signal_stop (EV_A_ &childev);
1770 }
1771#endif
1772
1224 if (ev_is_active (&pipeev)) 1773 if (ev_is_active (&pipe_w))
1225 { 1774 {
1226 ev_ref (EV_A); /* signal watcher */ 1775 /*ev_ref (EV_A);*/
1227 ev_io_stop (EV_A_ &pipeev); 1776 /*ev_io_stop (EV_A_ &pipe_w);*/
1228 1777
1229#if EV_USE_EVENTFD 1778#if EV_USE_EVENTFD
1230 if (evfd >= 0) 1779 if (evfd >= 0)
1231 close (evfd); 1780 close (evfd);
1232#endif 1781#endif
1233 1782
1234 if (evpipe [0] >= 0) 1783 if (evpipe [0] >= 0)
1235 { 1784 {
1236 close (evpipe [0]); 1785 EV_WIN32_CLOSE_FD (evpipe [0]);
1237 close (evpipe [1]); 1786 EV_WIN32_CLOSE_FD (evpipe [1]);
1238 } 1787 }
1239 } 1788 }
1789
1790#if EV_USE_SIGNALFD
1791 if (ev_is_active (&sigfd_w))
1792 close (sigfd);
1793#endif
1240 1794
1241#if EV_USE_INOTIFY 1795#if EV_USE_INOTIFY
1242 if (fs_fd >= 0) 1796 if (fs_fd >= 0)
1243 close (fs_fd); 1797 close (fs_fd);
1244#endif 1798#endif
1245 1799
1246 if (backend_fd >= 0) 1800 if (backend_fd >= 0)
1247 close (backend_fd); 1801 close (backend_fd);
1248 1802
1803#if EV_USE_IOCP
1804 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1805#endif
1249#if EV_USE_PORT 1806#if EV_USE_PORT
1250 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1807 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1251#endif 1808#endif
1252#if EV_USE_KQUEUE 1809#if EV_USE_KQUEUE
1253 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1810 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1268#if EV_IDLE_ENABLE 1825#if EV_IDLE_ENABLE
1269 array_free (idle, [i]); 1826 array_free (idle, [i]);
1270#endif 1827#endif
1271 } 1828 }
1272 1829
1273 ev_free (anfds); anfdmax = 0; 1830 ev_free (anfds); anfds = 0; anfdmax = 0;
1274 1831
1275 /* have to use the microsoft-never-gets-it-right macro */ 1832 /* have to use the microsoft-never-gets-it-right macro */
1833 array_free (rfeed, EMPTY);
1276 array_free (fdchange, EMPTY); 1834 array_free (fdchange, EMPTY);
1277 array_free (timer, EMPTY); 1835 array_free (timer, EMPTY);
1278#if EV_PERIODIC_ENABLE 1836#if EV_PERIODIC_ENABLE
1279 array_free (periodic, EMPTY); 1837 array_free (periodic, EMPTY);
1280#endif 1838#endif
1281#if EV_FORK_ENABLE 1839#if EV_FORK_ENABLE
1282 array_free (fork, EMPTY); 1840 array_free (fork, EMPTY);
1283#endif 1841#endif
1842#if EV_CLEANUP_ENABLE
1843 array_free (cleanup, EMPTY);
1844#endif
1284 array_free (prepare, EMPTY); 1845 array_free (prepare, EMPTY);
1285 array_free (check, EMPTY); 1846 array_free (check, EMPTY);
1286#if EV_ASYNC_ENABLE 1847#if EV_ASYNC_ENABLE
1287 array_free (async, EMPTY); 1848 array_free (async, EMPTY);
1288#endif 1849#endif
1289 1850
1290 backend = 0; 1851 backend = 0;
1852
1853#if EV_MULTIPLICITY
1854 if (ev_is_default_loop (EV_A))
1855#endif
1856 ev_default_loop_ptr = 0;
1857#if EV_MULTIPLICITY
1858 else
1859 ev_free (EV_A);
1860#endif
1291} 1861}
1292 1862
1293#if EV_USE_INOTIFY 1863#if EV_USE_INOTIFY
1294void inline_size infy_fork (EV_P); 1864inline_size void infy_fork (EV_P);
1295#endif 1865#endif
1296 1866
1297void inline_size 1867inline_size void
1298loop_fork (EV_P) 1868loop_fork (EV_P)
1299{ 1869{
1300#if EV_USE_PORT 1870#if EV_USE_PORT
1301 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1871 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1302#endif 1872#endif
… …
1308#endif 1878#endif
1309#if EV_USE_INOTIFY 1879#if EV_USE_INOTIFY
1310 infy_fork (EV_A); 1880 infy_fork (EV_A);
1311#endif 1881#endif
1312 1882
1313 if (ev_is_active (&pipeev)) 1883 if (ev_is_active (&pipe_w))
1314 { 1884 {
1315 /* this "locks" the handlers against writing to the pipe */ 1885 /* this "locks" the handlers against writing to the pipe */
1316 /* while we modify the fd vars */ 1886 /* while we modify the fd vars */
1317 gotsig = 1; 1887 sig_pending = 1;
1318#if EV_ASYNC_ENABLE 1888#if EV_ASYNC_ENABLE
1319 gotasync = 1; 1889 async_pending = 1;
1320#endif 1890#endif
1321 1891
1322 ev_ref (EV_A); 1892 ev_ref (EV_A);
1323 ev_io_stop (EV_A_ &pipeev); 1893 ev_io_stop (EV_A_ &pipe_w);
1324 1894
1325#if EV_USE_EVENTFD 1895#if EV_USE_EVENTFD
1326 if (evfd >= 0) 1896 if (evfd >= 0)
1327 close (evfd); 1897 close (evfd);
1328#endif 1898#endif
1329 1899
1330 if (evpipe [0] >= 0) 1900 if (evpipe [0] >= 0)
1331 { 1901 {
1332 close (evpipe [0]); 1902 EV_WIN32_CLOSE_FD (evpipe [0]);
1333 close (evpipe [1]); 1903 EV_WIN32_CLOSE_FD (evpipe [1]);
1334 } 1904 }
1335 1905
1906#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1336 evpipe_init (EV_A); 1907 evpipe_init (EV_A);
1337 /* now iterate over everything, in case we missed something */ 1908 /* now iterate over everything, in case we missed something */
1338 pipecb (EV_A_ &pipeev, EV_READ); 1909 pipecb (EV_A_ &pipe_w, EV_READ);
1910#endif
1339 } 1911 }
1340 1912
1341 postfork = 0; 1913 postfork = 0;
1342} 1914}
1915
1916#if EV_MULTIPLICITY
1917
1918struct ev_loop *
1919ev_loop_new (unsigned int flags)
1920{
1921 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1922
1923 memset (EV_A, 0, sizeof (struct ev_loop));
1924 loop_init (EV_A_ flags);
1925
1926 if (ev_backend (EV_A))
1927 return EV_A;
1928
1929 ev_free (EV_A);
1930 return 0;
1931}
1932
1933#endif /* multiplicity */
1934
1935#if EV_VERIFY
1936static void noinline
1937verify_watcher (EV_P_ W w)
1938{
1939 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1940
1941 if (w->pending)
1942 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1943}
1944
1945static void noinline
1946verify_heap (EV_P_ ANHE *heap, int N)
1947{
1948 int i;
1949
1950 for (i = HEAP0; i < N + HEAP0; ++i)
1951 {
1952 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1953 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1954 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1955
1956 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1957 }
1958}
1959
1960static void noinline
1961array_verify (EV_P_ W *ws, int cnt)
1962{
1963 while (cnt--)
1964 {
1965 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1966 verify_watcher (EV_A_ ws [cnt]);
1967 }
1968}
1969#endif
1970
1971#if EV_FEATURE_API
1972void
1973ev_verify (EV_P)
1974{
1975#if EV_VERIFY
1976 int i;
1977 WL w;
1978
1979 assert (activecnt >= -1);
1980
1981 assert (fdchangemax >= fdchangecnt);
1982 for (i = 0; i < fdchangecnt; ++i)
1983 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1984
1985 assert (anfdmax >= 0);
1986 for (i = 0; i < anfdmax; ++i)
1987 for (w = anfds [i].head; w; w = w->next)
1988 {
1989 verify_watcher (EV_A_ (W)w);
1990 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1991 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1992 }
1993
1994 assert (timermax >= timercnt);
1995 verify_heap (EV_A_ timers, timercnt);
1996
1997#if EV_PERIODIC_ENABLE
1998 assert (periodicmax >= periodiccnt);
1999 verify_heap (EV_A_ periodics, periodiccnt);
2000#endif
2001
2002 for (i = NUMPRI; i--; )
2003 {
2004 assert (pendingmax [i] >= pendingcnt [i]);
2005#if EV_IDLE_ENABLE
2006 assert (idleall >= 0);
2007 assert (idlemax [i] >= idlecnt [i]);
2008 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2009#endif
2010 }
2011
2012#if EV_FORK_ENABLE
2013 assert (forkmax >= forkcnt);
2014 array_verify (EV_A_ (W *)forks, forkcnt);
2015#endif
2016
2017#if EV_CLEANUP_ENABLE
2018 assert (cleanupmax >= cleanupcnt);
2019 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2020#endif
2021
2022#if EV_ASYNC_ENABLE
2023 assert (asyncmax >= asynccnt);
2024 array_verify (EV_A_ (W *)asyncs, asynccnt);
2025#endif
2026
2027#if EV_PREPARE_ENABLE
2028 assert (preparemax >= preparecnt);
2029 array_verify (EV_A_ (W *)prepares, preparecnt);
2030#endif
2031
2032#if EV_CHECK_ENABLE
2033 assert (checkmax >= checkcnt);
2034 array_verify (EV_A_ (W *)checks, checkcnt);
2035#endif
2036
2037# if 0
2038#if EV_CHILD_ENABLE
2039 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2040 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2041#endif
2042# endif
2043#endif
2044}
2045#endif
1343 2046
1344#if EV_MULTIPLICITY 2047#if EV_MULTIPLICITY
1345struct ev_loop * 2048struct 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 2049#else
1379int 2050int
2051#endif
1380ev_default_loop (unsigned int flags) 2052ev_default_loop (unsigned int flags)
1381#endif
1382{ 2053{
1383 if (!ev_default_loop_ptr) 2054 if (!ev_default_loop_ptr)
1384 { 2055 {
1385#if EV_MULTIPLICITY 2056#if EV_MULTIPLICITY
1386 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2057 EV_P = ev_default_loop_ptr = &default_loop_struct;
1387#else 2058#else
1388 ev_default_loop_ptr = 1; 2059 ev_default_loop_ptr = 1;
1389#endif 2060#endif
1390 2061
1391 loop_init (EV_A_ flags); 2062 loop_init (EV_A_ flags);
1392 2063
1393 if (ev_backend (EV_A)) 2064 if (ev_backend (EV_A))
1394 { 2065 {
1395#ifndef _WIN32 2066#if EV_CHILD_ENABLE
1396 ev_signal_init (&childev, childcb, SIGCHLD); 2067 ev_signal_init (&childev, childcb, SIGCHLD);
1397 ev_set_priority (&childev, EV_MAXPRI); 2068 ev_set_priority (&childev, EV_MAXPRI);
1398 ev_signal_start (EV_A_ &childev); 2069 ev_signal_start (EV_A_ &childev);
1399 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2070 ev_unref (EV_A); /* child watcher should not keep loop alive */
1400#endif 2071#endif
… …
1405 2076
1406 return ev_default_loop_ptr; 2077 return ev_default_loop_ptr;
1407} 2078}
1408 2079
1409void 2080void
1410ev_default_destroy (void) 2081ev_loop_fork (EV_P)
1411{ 2082{
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 */ 2083 postfork = 1; /* must be in line with ev_default_fork */
1433} 2084}
1434 2085
1435/*****************************************************************************/ 2086/*****************************************************************************/
1436 2087
1437void 2088void
1438ev_invoke (EV_P_ void *w, int revents) 2089ev_invoke (EV_P_ void *w, int revents)
1439{ 2090{
1440 EV_CB_INVOKE ((W)w, revents); 2091 EV_CB_INVOKE ((W)w, revents);
1441} 2092}
1442 2093
1443void inline_speed 2094unsigned int
1444call_pending (EV_P) 2095ev_pending_count (EV_P)
2096{
2097 int pri;
2098 unsigned int count = 0;
2099
2100 for (pri = NUMPRI; pri--; )
2101 count += pendingcnt [pri];
2102
2103 return count;
2104}
2105
2106void noinline
2107ev_invoke_pending (EV_P)
1445{ 2108{
1446 int pri; 2109 int pri;
1447 2110
1448 for (pri = NUMPRI; pri--; ) 2111 for (pri = NUMPRI; pri--; )
1449 while (pendingcnt [pri]) 2112 while (pendingcnt [pri])
1450 { 2113 {
1451 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2114 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1452 2115
1453 if (expect_true (p->w))
1454 {
1455 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2116 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2117 /* ^ this is no longer true, as pending_w could be here */
1456 2118
1457 p->w->pending = 0; 2119 p->w->pending = 0;
1458 EV_CB_INVOKE (p->w, p->events); 2120 EV_CB_INVOKE (p->w, p->events);
1459 } 2121 EV_FREQUENT_CHECK;
1460 } 2122 }
1461} 2123}
1462 2124
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 2125#if EV_IDLE_ENABLE
1544void inline_size 2126/* make idle watchers pending. this handles the "call-idle */
2127/* only when higher priorities are idle" logic */
2128inline_size void
1545idle_reify (EV_P) 2129idle_reify (EV_P)
1546{ 2130{
1547 if (expect_false (idleall)) 2131 if (expect_false (idleall))
1548 { 2132 {
1549 int pri; 2133 int pri;
… …
1561 } 2145 }
1562 } 2146 }
1563} 2147}
1564#endif 2148#endif
1565 2149
1566void inline_speed 2150/* make timers pending */
2151inline_size void
2152timers_reify (EV_P)
2153{
2154 EV_FREQUENT_CHECK;
2155
2156 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2157 {
2158 do
2159 {
2160 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2161
2162 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2163
2164 /* first reschedule or stop timer */
2165 if (w->repeat)
2166 {
2167 ev_at (w) += w->repeat;
2168 if (ev_at (w) < mn_now)
2169 ev_at (w) = mn_now;
2170
2171 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2172
2173 ANHE_at_cache (timers [HEAP0]);
2174 downheap (timers, timercnt, HEAP0);
2175 }
2176 else
2177 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2178
2179 EV_FREQUENT_CHECK;
2180 feed_reverse (EV_A_ (W)w);
2181 }
2182 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2183
2184 feed_reverse_done (EV_A_ EV_TIMER);
2185 }
2186}
2187
2188#if EV_PERIODIC_ENABLE
2189/* make periodics pending */
2190inline_size void
2191periodics_reify (EV_P)
2192{
2193 EV_FREQUENT_CHECK;
2194
2195 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2196 {
2197 int feed_count = 0;
2198
2199 do
2200 {
2201 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2202
2203 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2204
2205 /* first reschedule or stop timer */
2206 if (w->reschedule_cb)
2207 {
2208 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2209
2210 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2211
2212 ANHE_at_cache (periodics [HEAP0]);
2213 downheap (periodics, periodiccnt, HEAP0);
2214 }
2215 else if (w->interval)
2216 {
2217 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2218 /* if next trigger time is not sufficiently in the future, put it there */
2219 /* this might happen because of floating point inexactness */
2220 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2221 {
2222 ev_at (w) += w->interval;
2223
2224 /* if interval is unreasonably low we might still have a time in the past */
2225 /* so correct this. this will make the periodic very inexact, but the user */
2226 /* has effectively asked to get triggered more often than possible */
2227 if (ev_at (w) < ev_rt_now)
2228 ev_at (w) = ev_rt_now;
2229 }
2230
2231 ANHE_at_cache (periodics [HEAP0]);
2232 downheap (periodics, periodiccnt, HEAP0);
2233 }
2234 else
2235 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2236
2237 EV_FREQUENT_CHECK;
2238 feed_reverse (EV_A_ (W)w);
2239 }
2240 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2241
2242 feed_reverse_done (EV_A_ EV_PERIODIC);
2243 }
2244}
2245
2246/* simply recalculate all periodics */
2247/* TODO: maybe ensure that at least one event happens when jumping forward? */
2248static void noinline
2249periodics_reschedule (EV_P)
2250{
2251 int i;
2252
2253 /* adjust periodics after time jump */
2254 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2255 {
2256 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2257
2258 if (w->reschedule_cb)
2259 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2260 else if (w->interval)
2261 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2262
2263 ANHE_at_cache (periodics [i]);
2264 }
2265
2266 reheap (periodics, periodiccnt);
2267}
2268#endif
2269
2270/* adjust all timers by a given offset */
2271static void noinline
2272timers_reschedule (EV_P_ ev_tstamp adjust)
2273{
2274 int i;
2275
2276 for (i = 0; i < timercnt; ++i)
2277 {
2278 ANHE *he = timers + i + HEAP0;
2279 ANHE_w (*he)->at += adjust;
2280 ANHE_at_cache (*he);
2281 }
2282}
2283
2284/* fetch new monotonic and realtime times from the kernel */
2285/* also detect if there was a timejump, and act accordingly */
2286inline_speed void
1567time_update (EV_P_ ev_tstamp max_block) 2287time_update (EV_P_ ev_tstamp max_block)
1568{ 2288{
1569 int i;
1570
1571#if EV_USE_MONOTONIC 2289#if EV_USE_MONOTONIC
1572 if (expect_true (have_monotonic)) 2290 if (expect_true (have_monotonic))
1573 { 2291 {
2292 int i;
1574 ev_tstamp odiff = rtmn_diff; 2293 ev_tstamp odiff = rtmn_diff;
1575 2294
1576 mn_now = get_clock (); 2295 mn_now = get_clock ();
1577 2296
1578 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2297 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1596 */ 2315 */
1597 for (i = 4; --i; ) 2316 for (i = 4; --i; )
1598 { 2317 {
1599 rtmn_diff = ev_rt_now - mn_now; 2318 rtmn_diff = ev_rt_now - mn_now;
1600 2319
1601 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2320 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1602 return; /* all is well */ 2321 return; /* all is well */
1603 2322
1604 ev_rt_now = ev_time (); 2323 ev_rt_now = ev_time ();
1605 mn_now = get_clock (); 2324 mn_now = get_clock ();
1606 now_floor = mn_now; 2325 now_floor = mn_now;
1607 } 2326 }
1608 2327
2328 /* no timer adjustment, as the monotonic clock doesn't jump */
2329 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1609# if EV_PERIODIC_ENABLE 2330# if EV_PERIODIC_ENABLE
1610 periodics_reschedule (EV_A); 2331 periodics_reschedule (EV_A);
1611# endif 2332# endif
1612 /* no timer adjustment, as the monotonic clock doesn't jump */
1613 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1614 } 2333 }
1615 else 2334 else
1616#endif 2335#endif
1617 { 2336 {
1618 ev_rt_now = ev_time (); 2337 ev_rt_now = ev_time ();
1619 2338
1620 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2339 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1621 { 2340 {
2341 /* adjust timers. this is easy, as the offset is the same for all of them */
2342 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1622#if EV_PERIODIC_ENABLE 2343#if EV_PERIODIC_ENABLE
1623 periodics_reschedule (EV_A); 2344 periodics_reschedule (EV_A);
1624#endif 2345#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 } 2346 }
1629 2347
1630 mn_now = ev_rt_now; 2348 mn_now = ev_rt_now;
1631 } 2349 }
1632} 2350}
1633 2351
1634void 2352void
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) 2353ev_run (EV_P_ int flags)
1650{ 2354{
2355#if EV_FEATURE_API
2356 ++loop_depth;
2357#endif
2358
2359 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2360
1651 loop_done = EVUNLOOP_CANCEL; 2361 loop_done = EVBREAK_CANCEL;
1652 2362
1653 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2363 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1654 2364
1655 do 2365 do
1656 { 2366 {
2367#if EV_VERIFY >= 2
2368 ev_verify (EV_A);
2369#endif
2370
1657#ifndef _WIN32 2371#ifndef _WIN32
1658 if (expect_false (curpid)) /* penalise the forking check even more */ 2372 if (expect_false (curpid)) /* penalise the forking check even more */
1659 if (expect_false (getpid () != curpid)) 2373 if (expect_false (getpid () != curpid))
1660 { 2374 {
1661 curpid = getpid (); 2375 curpid = getpid ();
… …
1667 /* we might have forked, so queue fork handlers */ 2381 /* we might have forked, so queue fork handlers */
1668 if (expect_false (postfork)) 2382 if (expect_false (postfork))
1669 if (forkcnt) 2383 if (forkcnt)
1670 { 2384 {
1671 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2385 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1672 call_pending (EV_A); 2386 EV_INVOKE_PENDING;
1673 } 2387 }
1674#endif 2388#endif
1675 2389
2390#if EV_PREPARE_ENABLE
1676 /* queue prepare watchers (and execute them) */ 2391 /* queue prepare watchers (and execute them) */
1677 if (expect_false (preparecnt)) 2392 if (expect_false (preparecnt))
1678 { 2393 {
1679 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2394 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1680 call_pending (EV_A); 2395 EV_INVOKE_PENDING;
1681 } 2396 }
2397#endif
1682 2398
1683 if (expect_false (!activecnt)) 2399 if (expect_false (loop_done))
1684 break; 2400 break;
1685 2401
1686 /* we might have forked, so reify kernel state if necessary */ 2402 /* we might have forked, so reify kernel state if necessary */
1687 if (expect_false (postfork)) 2403 if (expect_false (postfork))
1688 loop_fork (EV_A); 2404 loop_fork (EV_A);
… …
1693 /* calculate blocking time */ 2409 /* calculate blocking time */
1694 { 2410 {
1695 ev_tstamp waittime = 0.; 2411 ev_tstamp waittime = 0.;
1696 ev_tstamp sleeptime = 0.; 2412 ev_tstamp sleeptime = 0.;
1697 2413
2414 /* remember old timestamp for io_blocktime calculation */
2415 ev_tstamp prev_mn_now = mn_now;
2416
2417 /* update time to cancel out callback processing overhead */
2418 time_update (EV_A_ 1e100);
2419
1698 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2420 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1699 { 2421 {
1700 /* update time to cancel out callback processing overhead */
1701 time_update (EV_A_ 1e100);
1702
1703 waittime = MAX_BLOCKTIME; 2422 waittime = MAX_BLOCKTIME;
1704 2423
1705 if (timercnt) 2424 if (timercnt)
1706 { 2425 {
1707 ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge; 2426 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1708 if (waittime > to) waittime = to; 2427 if (waittime > to) waittime = to;
1709 } 2428 }
1710 2429
1711#if EV_PERIODIC_ENABLE 2430#if EV_PERIODIC_ENABLE
1712 if (periodiccnt) 2431 if (periodiccnt)
1713 { 2432 {
1714 ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge; 2433 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1715 if (waittime > to) waittime = to; 2434 if (waittime > to) waittime = to;
1716 } 2435 }
1717#endif 2436#endif
1718 2437
2438 /* don't let timeouts decrease the waittime below timeout_blocktime */
1719 if (expect_false (waittime < timeout_blocktime)) 2439 if (expect_false (waittime < timeout_blocktime))
1720 waittime = timeout_blocktime; 2440 waittime = timeout_blocktime;
1721 2441
1722 sleeptime = waittime - backend_fudge; 2442 /* extra check because io_blocktime is commonly 0 */
1723
1724 if (expect_true (sleeptime > io_blocktime)) 2443 if (expect_false (io_blocktime))
1725 sleeptime = io_blocktime;
1726
1727 if (sleeptime)
1728 { 2444 {
2445 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2446
2447 if (sleeptime > waittime - backend_fudge)
2448 sleeptime = waittime - backend_fudge;
2449
2450 if (expect_true (sleeptime > 0.))
2451 {
1729 ev_sleep (sleeptime); 2452 ev_sleep (sleeptime);
1730 waittime -= sleeptime; 2453 waittime -= sleeptime;
2454 }
1731 } 2455 }
1732 } 2456 }
1733 2457
2458#if EV_FEATURE_API
1734 ++loop_count; 2459 ++loop_count;
2460#endif
2461 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1735 backend_poll (EV_A_ waittime); 2462 backend_poll (EV_A_ waittime);
2463 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1736 2464
1737 /* update ev_rt_now, do magic */ 2465 /* update ev_rt_now, do magic */
1738 time_update (EV_A_ waittime + sleeptime); 2466 time_update (EV_A_ waittime + sleeptime);
1739 } 2467 }
1740 2468
… …
1747#if EV_IDLE_ENABLE 2475#if EV_IDLE_ENABLE
1748 /* queue idle watchers unless other events are pending */ 2476 /* queue idle watchers unless other events are pending */
1749 idle_reify (EV_A); 2477 idle_reify (EV_A);
1750#endif 2478#endif
1751 2479
2480#if EV_CHECK_ENABLE
1752 /* queue check watchers, to be executed first */ 2481 /* queue check watchers, to be executed first */
1753 if (expect_false (checkcnt)) 2482 if (expect_false (checkcnt))
1754 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2483 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2484#endif
1755 2485
1756 call_pending (EV_A); 2486 EV_INVOKE_PENDING;
1757 } 2487 }
1758 while (expect_true ( 2488 while (expect_true (
1759 activecnt 2489 activecnt
1760 && !loop_done 2490 && !loop_done
1761 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2491 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1762 )); 2492 ));
1763 2493
1764 if (loop_done == EVUNLOOP_ONE) 2494 if (loop_done == EVBREAK_ONE)
1765 loop_done = EVUNLOOP_CANCEL; 2495 loop_done = EVBREAK_CANCEL;
1766}
1767 2496
2497#if EV_FEATURE_API
2498 --loop_depth;
2499#endif
2500}
2501
1768void 2502void
1769ev_unloop (EV_P_ int how) 2503ev_break (EV_P_ int how)
1770{ 2504{
1771 loop_done = how; 2505 loop_done = how;
1772} 2506}
1773 2507
2508void
2509ev_ref (EV_P)
2510{
2511 ++activecnt;
2512}
2513
2514void
2515ev_unref (EV_P)
2516{
2517 --activecnt;
2518}
2519
2520void
2521ev_now_update (EV_P)
2522{
2523 time_update (EV_A_ 1e100);
2524}
2525
2526void
2527ev_suspend (EV_P)
2528{
2529 ev_now_update (EV_A);
2530}
2531
2532void
2533ev_resume (EV_P)
2534{
2535 ev_tstamp mn_prev = mn_now;
2536
2537 ev_now_update (EV_A);
2538 timers_reschedule (EV_A_ mn_now - mn_prev);
2539#if EV_PERIODIC_ENABLE
2540 /* TODO: really do this? */
2541 periodics_reschedule (EV_A);
2542#endif
2543}
2544
1774/*****************************************************************************/ 2545/*****************************************************************************/
2546/* singly-linked list management, used when the expected list length is short */
1775 2547
1776void inline_size 2548inline_size void
1777wlist_add (WL *head, WL elem) 2549wlist_add (WL *head, WL elem)
1778{ 2550{
1779 elem->next = *head; 2551 elem->next = *head;
1780 *head = elem; 2552 *head = elem;
1781} 2553}
1782 2554
1783void inline_size 2555inline_size void
1784wlist_del (WL *head, WL elem) 2556wlist_del (WL *head, WL elem)
1785{ 2557{
1786 while (*head) 2558 while (*head)
1787 { 2559 {
1788 if (*head == elem) 2560 if (expect_true (*head == elem))
1789 { 2561 {
1790 *head = elem->next; 2562 *head = elem->next;
1791 return; 2563 break;
1792 } 2564 }
1793 2565
1794 head = &(*head)->next; 2566 head = &(*head)->next;
1795 } 2567 }
1796} 2568}
1797 2569
1798void inline_speed 2570/* internal, faster, version of ev_clear_pending */
2571inline_speed void
1799clear_pending (EV_P_ W w) 2572clear_pending (EV_P_ W w)
1800{ 2573{
1801 if (w->pending) 2574 if (w->pending)
1802 { 2575 {
1803 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2576 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1804 w->pending = 0; 2577 w->pending = 0;
1805 } 2578 }
1806} 2579}
1807 2580
1808int 2581int
… …
1812 int pending = w_->pending; 2585 int pending = w_->pending;
1813 2586
1814 if (expect_true (pending)) 2587 if (expect_true (pending))
1815 { 2588 {
1816 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2589 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2590 p->w = (W)&pending_w;
1817 w_->pending = 0; 2591 w_->pending = 0;
1818 p->w = 0;
1819 return p->events; 2592 return p->events;
1820 } 2593 }
1821 else 2594 else
1822 return 0; 2595 return 0;
1823} 2596}
1824 2597
1825void inline_size 2598inline_size void
1826pri_adjust (EV_P_ W w) 2599pri_adjust (EV_P_ W w)
1827{ 2600{
1828 int pri = w->priority; 2601 int pri = ev_priority (w);
1829 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2602 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1830 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2603 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1831 w->priority = pri; 2604 ev_set_priority (w, pri);
1832} 2605}
1833 2606
1834void inline_speed 2607inline_speed void
1835ev_start (EV_P_ W w, int active) 2608ev_start (EV_P_ W w, int active)
1836{ 2609{
1837 pri_adjust (EV_A_ w); 2610 pri_adjust (EV_A_ w);
1838 w->active = active; 2611 w->active = active;
1839 ev_ref (EV_A); 2612 ev_ref (EV_A);
1840} 2613}
1841 2614
1842void inline_size 2615inline_size void
1843ev_stop (EV_P_ W w) 2616ev_stop (EV_P_ W w)
1844{ 2617{
1845 ev_unref (EV_A); 2618 ev_unref (EV_A);
1846 w->active = 0; 2619 w->active = 0;
1847} 2620}
… …
1854 int fd = w->fd; 2627 int fd = w->fd;
1855 2628
1856 if (expect_false (ev_is_active (w))) 2629 if (expect_false (ev_is_active (w)))
1857 return; 2630 return;
1858 2631
1859 assert (("ev_io_start called with negative fd", fd >= 0)); 2632 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2633 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2634
2635 EV_FREQUENT_CHECK;
1860 2636
1861 ev_start (EV_A_ (W)w, 1); 2637 ev_start (EV_A_ (W)w, 1);
1862 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2638 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1863 wlist_add (&anfds[fd].head, (WL)w); 2639 wlist_add (&anfds[fd].head, (WL)w);
1864 2640
1865 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2641 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1866 w->events &= ~EV_IOFDSET; 2642 w->events &= ~EV__IOFDSET;
2643
2644 EV_FREQUENT_CHECK;
1867} 2645}
1868 2646
1869void noinline 2647void noinline
1870ev_io_stop (EV_P_ ev_io *w) 2648ev_io_stop (EV_P_ ev_io *w)
1871{ 2649{
1872 clear_pending (EV_A_ (W)w); 2650 clear_pending (EV_A_ (W)w);
1873 if (expect_false (!ev_is_active (w))) 2651 if (expect_false (!ev_is_active (w)))
1874 return; 2652 return;
1875 2653
1876 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2654 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2655
2656 EV_FREQUENT_CHECK;
1877 2657
1878 wlist_del (&anfds[w->fd].head, (WL)w); 2658 wlist_del (&anfds[w->fd].head, (WL)w);
1879 ev_stop (EV_A_ (W)w); 2659 ev_stop (EV_A_ (W)w);
1880 2660
1881 fd_change (EV_A_ w->fd, 1); 2661 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2662
2663 EV_FREQUENT_CHECK;
1882} 2664}
1883 2665
1884void noinline 2666void noinline
1885ev_timer_start (EV_P_ ev_timer *w) 2667ev_timer_start (EV_P_ ev_timer *w)
1886{ 2668{
1887 if (expect_false (ev_is_active (w))) 2669 if (expect_false (ev_is_active (w)))
1888 return; 2670 return;
1889 2671
1890 ev_at (w) += mn_now; 2672 ev_at (w) += mn_now;
1891 2673
1892 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2674 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1893 2675
2676 EV_FREQUENT_CHECK;
2677
2678 ++timercnt;
1894 ev_start (EV_A_ (W)w, ++timercnt); 2679 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1895 array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2); 2680 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1896 timers [timercnt] = (WT)w; 2681 ANHE_w (timers [ev_active (w)]) = (WT)w;
2682 ANHE_at_cache (timers [ev_active (w)]);
1897 upheap (timers, timercnt); 2683 upheap (timers, ev_active (w));
1898 2684
2685 EV_FREQUENT_CHECK;
2686
1899 /*assert (("internal timer heap corruption", timers [((W)w)->active] == w));*/ 2687 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1900} 2688}
1901 2689
1902void noinline 2690void noinline
1903ev_timer_stop (EV_P_ ev_timer *w) 2691ev_timer_stop (EV_P_ ev_timer *w)
1904{ 2692{
1905 clear_pending (EV_A_ (W)w); 2693 clear_pending (EV_A_ (W)w);
1906 if (expect_false (!ev_is_active (w))) 2694 if (expect_false (!ev_is_active (w)))
1907 return; 2695 return;
1908 2696
1909 assert (("internal timer heap corruption", timers [((W)w)->active] == (WT)w)); 2697 EV_FREQUENT_CHECK;
1910 2698
1911 { 2699 {
1912 int active = ((W)w)->active; 2700 int active = ev_active (w);
1913 2701
2702 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2703
2704 --timercnt;
2705
1914 if (expect_true (active < timercnt)) 2706 if (expect_true (active < timercnt + HEAP0))
1915 { 2707 {
1916 timers [active] = timers [timercnt]; 2708 timers [active] = timers [timercnt + HEAP0];
1917 adjustheap (timers, timercnt, active); 2709 adjustheap (timers, timercnt, active);
1918 } 2710 }
1919
1920 --timercnt;
1921 } 2711 }
1922 2712
1923 ev_at (w) -= mn_now; 2713 ev_at (w) -= mn_now;
1924 2714
1925 ev_stop (EV_A_ (W)w); 2715 ev_stop (EV_A_ (W)w);
2716
2717 EV_FREQUENT_CHECK;
1926} 2718}
1927 2719
1928void noinline 2720void noinline
1929ev_timer_again (EV_P_ ev_timer *w) 2721ev_timer_again (EV_P_ ev_timer *w)
1930{ 2722{
2723 EV_FREQUENT_CHECK;
2724
1931 if (ev_is_active (w)) 2725 if (ev_is_active (w))
1932 { 2726 {
1933 if (w->repeat) 2727 if (w->repeat)
1934 { 2728 {
1935 ev_at (w) = mn_now + w->repeat; 2729 ev_at (w) = mn_now + w->repeat;
2730 ANHE_at_cache (timers [ev_active (w)]);
1936 adjustheap (timers, timercnt, ((W)w)->active); 2731 adjustheap (timers, timercnt, ev_active (w));
1937 } 2732 }
1938 else 2733 else
1939 ev_timer_stop (EV_A_ w); 2734 ev_timer_stop (EV_A_ w);
1940 } 2735 }
1941 else if (w->repeat) 2736 else if (w->repeat)
1942 { 2737 {
1943 w->at = w->repeat; 2738 ev_at (w) = w->repeat;
1944 ev_timer_start (EV_A_ w); 2739 ev_timer_start (EV_A_ w);
1945 } 2740 }
2741
2742 EV_FREQUENT_CHECK;
2743}
2744
2745ev_tstamp
2746ev_timer_remaining (EV_P_ ev_timer *w)
2747{
2748 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1946} 2749}
1947 2750
1948#if EV_PERIODIC_ENABLE 2751#if EV_PERIODIC_ENABLE
1949void noinline 2752void noinline
1950ev_periodic_start (EV_P_ ev_periodic *w) 2753ev_periodic_start (EV_P_ ev_periodic *w)
… …
1954 2757
1955 if (w->reschedule_cb) 2758 if (w->reschedule_cb)
1956 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2759 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1957 else if (w->interval) 2760 else if (w->interval)
1958 { 2761 {
1959 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2762 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 */ 2763 /* 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; 2764 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1962 } 2765 }
1963 else 2766 else
1964 ev_at (w) = w->offset; 2767 ev_at (w) = w->offset;
1965 2768
2769 EV_FREQUENT_CHECK;
2770
2771 ++periodiccnt;
1966 ev_start (EV_A_ (W)w, ++periodiccnt); 2772 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1967 array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2); 2773 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1968 periodics [periodiccnt] = (WT)w; 2774 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1969 upheap (periodics, periodiccnt); 2775 ANHE_at_cache (periodics [ev_active (w)]);
2776 upheap (periodics, ev_active (w));
1970 2777
2778 EV_FREQUENT_CHECK;
2779
1971 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2780 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1972} 2781}
1973 2782
1974void noinline 2783void noinline
1975ev_periodic_stop (EV_P_ ev_periodic *w) 2784ev_periodic_stop (EV_P_ ev_periodic *w)
1976{ 2785{
1977 clear_pending (EV_A_ (W)w); 2786 clear_pending (EV_A_ (W)w);
1978 if (expect_false (!ev_is_active (w))) 2787 if (expect_false (!ev_is_active (w)))
1979 return; 2788 return;
1980 2789
1981 assert (("internal periodic heap corruption", periodics [((W)w)->active] == (WT)w)); 2790 EV_FREQUENT_CHECK;
1982 2791
1983 { 2792 {
1984 int active = ((W)w)->active; 2793 int active = ev_active (w);
1985 2794
2795 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2796
2797 --periodiccnt;
2798
1986 if (expect_true (active < periodiccnt)) 2799 if (expect_true (active < periodiccnt + HEAP0))
1987 { 2800 {
1988 periodics [active] = periodics [periodiccnt]; 2801 periodics [active] = periodics [periodiccnt + HEAP0];
1989 adjustheap (periodics, periodiccnt, active); 2802 adjustheap (periodics, periodiccnt, active);
1990 } 2803 }
1991
1992 --periodiccnt;
1993 } 2804 }
1994 2805
1995 ev_stop (EV_A_ (W)w); 2806 ev_stop (EV_A_ (W)w);
2807
2808 EV_FREQUENT_CHECK;
1996} 2809}
1997 2810
1998void noinline 2811void noinline
1999ev_periodic_again (EV_P_ ev_periodic *w) 2812ev_periodic_again (EV_P_ ev_periodic *w)
2000{ 2813{
… …
2006 2819
2007#ifndef SA_RESTART 2820#ifndef SA_RESTART
2008# define SA_RESTART 0 2821# define SA_RESTART 0
2009#endif 2822#endif
2010 2823
2824#if EV_SIGNAL_ENABLE
2825
2011void noinline 2826void noinline
2012ev_signal_start (EV_P_ ev_signal *w) 2827ev_signal_start (EV_P_ ev_signal *w)
2013{ 2828{
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))) 2829 if (expect_false (ev_is_active (w)))
2018 return; 2830 return;
2019 2831
2020 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2832 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2021 2833
2022 evpipe_init (EV_A); 2834#if EV_MULTIPLICITY
2835 assert (("libev: a signal must not be attached to two different loops",
2836 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2023 2837
2838 signals [w->signum - 1].loop = EV_A;
2839#endif
2840
2841 EV_FREQUENT_CHECK;
2842
2843#if EV_USE_SIGNALFD
2844 if (sigfd == -2)
2024 { 2845 {
2025#ifndef _WIN32 2846 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2026 sigset_t full, prev; 2847 if (sigfd < 0 && errno == EINVAL)
2027 sigfillset (&full); 2848 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2028 sigprocmask (SIG_SETMASK, &full, &prev);
2029#endif
2030 2849
2031 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2850 if (sigfd >= 0)
2851 {
2852 fd_intern (sigfd); /* doing it twice will not hurt */
2032 2853
2033#ifndef _WIN32 2854 sigemptyset (&sigfd_set);
2034 sigprocmask (SIG_SETMASK, &prev, 0); 2855
2035#endif 2856 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2857 ev_set_priority (&sigfd_w, EV_MAXPRI);
2858 ev_io_start (EV_A_ &sigfd_w);
2859 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2860 }
2036 } 2861 }
2862
2863 if (sigfd >= 0)
2864 {
2865 /* TODO: check .head */
2866 sigaddset (&sigfd_set, w->signum);
2867 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2868
2869 signalfd (sigfd, &sigfd_set, 0);
2870 }
2871#endif
2037 2872
2038 ev_start (EV_A_ (W)w, 1); 2873 ev_start (EV_A_ (W)w, 1);
2039 wlist_add (&signals [w->signum - 1].head, (WL)w); 2874 wlist_add (&signals [w->signum - 1].head, (WL)w);
2040 2875
2041 if (!((WL)w)->next) 2876 if (!((WL)w)->next)
2877# if EV_USE_SIGNALFD
2878 if (sigfd < 0) /*TODO*/
2879# endif
2042 { 2880 {
2043#if _WIN32 2881# ifdef _WIN32
2882 evpipe_init (EV_A);
2883
2044 signal (w->signum, ev_sighandler); 2884 signal (w->signum, ev_sighandler);
2045#else 2885# else
2046 struct sigaction sa; 2886 struct sigaction sa;
2887
2888 evpipe_init (EV_A);
2889
2047 sa.sa_handler = ev_sighandler; 2890 sa.sa_handler = ev_sighandler;
2048 sigfillset (&sa.sa_mask); 2891 sigfillset (&sa.sa_mask);
2049 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2892 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2050 sigaction (w->signum, &sa, 0); 2893 sigaction (w->signum, &sa, 0);
2894
2895 if (origflags & EVFLAG_NOSIGMASK)
2896 {
2897 sigemptyset (&sa.sa_mask);
2898 sigaddset (&sa.sa_mask, w->signum);
2899 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2900 }
2051#endif 2901#endif
2052 } 2902 }
2903
2904 EV_FREQUENT_CHECK;
2053} 2905}
2054 2906
2055void noinline 2907void noinline
2056ev_signal_stop (EV_P_ ev_signal *w) 2908ev_signal_stop (EV_P_ ev_signal *w)
2057{ 2909{
2058 clear_pending (EV_A_ (W)w); 2910 clear_pending (EV_A_ (W)w);
2059 if (expect_false (!ev_is_active (w))) 2911 if (expect_false (!ev_is_active (w)))
2060 return; 2912 return;
2061 2913
2914 EV_FREQUENT_CHECK;
2915
2062 wlist_del (&signals [w->signum - 1].head, (WL)w); 2916 wlist_del (&signals [w->signum - 1].head, (WL)w);
2063 ev_stop (EV_A_ (W)w); 2917 ev_stop (EV_A_ (W)w);
2064 2918
2065 if (!signals [w->signum - 1].head) 2919 if (!signals [w->signum - 1].head)
2920 {
2921#if EV_MULTIPLICITY
2922 signals [w->signum - 1].loop = 0; /* unattach from signal */
2923#endif
2924#if EV_USE_SIGNALFD
2925 if (sigfd >= 0)
2926 {
2927 sigset_t ss;
2928
2929 sigemptyset (&ss);
2930 sigaddset (&ss, w->signum);
2931 sigdelset (&sigfd_set, w->signum);
2932
2933 signalfd (sigfd, &sigfd_set, 0);
2934 sigprocmask (SIG_UNBLOCK, &ss, 0);
2935 }
2936 else
2937#endif
2066 signal (w->signum, SIG_DFL); 2938 signal (w->signum, SIG_DFL);
2939 }
2940
2941 EV_FREQUENT_CHECK;
2067} 2942}
2943
2944#endif
2945
2946#if EV_CHILD_ENABLE
2068 2947
2069void 2948void
2070ev_child_start (EV_P_ ev_child *w) 2949ev_child_start (EV_P_ ev_child *w)
2071{ 2950{
2072#if EV_MULTIPLICITY 2951#if EV_MULTIPLICITY
2073 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2952 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2074#endif 2953#endif
2075 if (expect_false (ev_is_active (w))) 2954 if (expect_false (ev_is_active (w)))
2076 return; 2955 return;
2077 2956
2957 EV_FREQUENT_CHECK;
2958
2078 ev_start (EV_A_ (W)w, 1); 2959 ev_start (EV_A_ (W)w, 1);
2079 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2960 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2961
2962 EV_FREQUENT_CHECK;
2080} 2963}
2081 2964
2082void 2965void
2083ev_child_stop (EV_P_ ev_child *w) 2966ev_child_stop (EV_P_ ev_child *w)
2084{ 2967{
2085 clear_pending (EV_A_ (W)w); 2968 clear_pending (EV_A_ (W)w);
2086 if (expect_false (!ev_is_active (w))) 2969 if (expect_false (!ev_is_active (w)))
2087 return; 2970 return;
2088 2971
2972 EV_FREQUENT_CHECK;
2973
2089 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2974 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2090 ev_stop (EV_A_ (W)w); 2975 ev_stop (EV_A_ (W)w);
2976
2977 EV_FREQUENT_CHECK;
2091} 2978}
2979
2980#endif
2092 2981
2093#if EV_STAT_ENABLE 2982#if EV_STAT_ENABLE
2094 2983
2095# ifdef _WIN32 2984# ifdef _WIN32
2096# undef lstat 2985# undef lstat
2097# define lstat(a,b) _stati64 (a,b) 2986# define lstat(a,b) _stati64 (a,b)
2098# endif 2987# endif
2099 2988
2100#define DEF_STAT_INTERVAL 5.0074891 2989#define DEF_STAT_INTERVAL 5.0074891
2990#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2101#define MIN_STAT_INTERVAL 0.1074891 2991#define MIN_STAT_INTERVAL 0.1074891
2102 2992
2103static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2993static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2104 2994
2105#if EV_USE_INOTIFY 2995#if EV_USE_INOTIFY
2106# define EV_INOTIFY_BUFSIZE 8192 2996
2997/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2998# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2107 2999
2108static void noinline 3000static void noinline
2109infy_add (EV_P_ ev_stat *w) 3001infy_add (EV_P_ ev_stat *w)
2110{ 3002{
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); 3003 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 3004
2113 if (w->wd < 0) 3005 if (w->wd >= 0)
3006 {
3007 struct statfs sfs;
3008
3009 /* now local changes will be tracked by inotify, but remote changes won't */
3010 /* unless the filesystem is known to be local, we therefore still poll */
3011 /* also do poll on <2.6.25, but with normal frequency */
3012
3013 if (!fs_2625)
3014 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3015 else if (!statfs (w->path, &sfs)
3016 && (sfs.f_type == 0x1373 /* devfs */
3017 || sfs.f_type == 0xEF53 /* ext2/3 */
3018 || sfs.f_type == 0x3153464a /* jfs */
3019 || sfs.f_type == 0x52654973 /* reiser3 */
3020 || sfs.f_type == 0x01021994 /* tempfs */
3021 || sfs.f_type == 0x58465342 /* xfs */))
3022 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3023 else
3024 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2114 { 3025 }
2115 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3026 else
3027 {
3028 /* can't use inotify, continue to stat */
3029 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2116 3030
2117 /* monitor some parent directory for speedup hints */ 3031 /* if path is not there, monitor some parent directory for speedup hints */
3032 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3033 /* but an efficiency issue only */
2118 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3034 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2119 { 3035 {
2120 char path [4096]; 3036 char path [4096];
2121 strcpy (path, w->path); 3037 strcpy (path, w->path);
2122 3038
… …
2125 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3041 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2126 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3042 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2127 3043
2128 char *pend = strrchr (path, '/'); 3044 char *pend = strrchr (path, '/');
2129 3045
2130 if (!pend) 3046 if (!pend || pend == path)
2131 break; /* whoops, no '/', complain to your admin */ 3047 break;
2132 3048
2133 *pend = 0; 3049 *pend = 0;
2134 w->wd = inotify_add_watch (fs_fd, path, mask); 3050 w->wd = inotify_add_watch (fs_fd, path, mask);
2135 } 3051 }
2136 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3052 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2137 } 3053 }
2138 } 3054 }
2139 else
2140 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2141 3055
2142 if (w->wd >= 0) 3056 if (w->wd >= 0)
2143 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3057 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3058
3059 /* now re-arm timer, if required */
3060 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3061 ev_timer_again (EV_A_ &w->timer);
3062 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2144} 3063}
2145 3064
2146static void noinline 3065static void noinline
2147infy_del (EV_P_ ev_stat *w) 3066infy_del (EV_P_ ev_stat *w)
2148{ 3067{
… …
2151 3070
2152 if (wd < 0) 3071 if (wd < 0)
2153 return; 3072 return;
2154 3073
2155 w->wd = -2; 3074 w->wd = -2;
2156 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3075 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2157 wlist_del (&fs_hash [slot].head, (WL)w); 3076 wlist_del (&fs_hash [slot].head, (WL)w);
2158 3077
2159 /* remove this watcher, if others are watching it, they will rearm */ 3078 /* remove this watcher, if others are watching it, they will rearm */
2160 inotify_rm_watch (fs_fd, wd); 3079 inotify_rm_watch (fs_fd, wd);
2161} 3080}
2162 3081
2163static void noinline 3082static void noinline
2164infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3083infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2165{ 3084{
2166 if (slot < 0) 3085 if (slot < 0)
2167 /* overflow, need to check for all hahs slots */ 3086 /* overflow, need to check for all hash slots */
2168 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3087 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2169 infy_wd (EV_A_ slot, wd, ev); 3088 infy_wd (EV_A_ slot, wd, ev);
2170 else 3089 else
2171 { 3090 {
2172 WL w_; 3091 WL w_;
2173 3092
2174 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3093 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2175 { 3094 {
2176 ev_stat *w = (ev_stat *)w_; 3095 ev_stat *w = (ev_stat *)w_;
2177 w_ = w_->next; /* lets us remove this watcher and all before it */ 3096 w_ = w_->next; /* lets us remove this watcher and all before it */
2178 3097
2179 if (w->wd == wd || wd == -1) 3098 if (w->wd == wd || wd == -1)
2180 { 3099 {
2181 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3100 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2182 { 3101 {
3102 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2183 w->wd = -1; 3103 w->wd = -1;
2184 infy_add (EV_A_ w); /* re-add, no matter what */ 3104 infy_add (EV_A_ w); /* re-add, no matter what */
2185 } 3105 }
2186 3106
2187 stat_timer_cb (EV_A_ &w->timer, 0); 3107 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2192 3112
2193static void 3113static void
2194infy_cb (EV_P_ ev_io *w, int revents) 3114infy_cb (EV_P_ ev_io *w, int revents)
2195{ 3115{
2196 char buf [EV_INOTIFY_BUFSIZE]; 3116 char buf [EV_INOTIFY_BUFSIZE];
2197 struct inotify_event *ev = (struct inotify_event *)buf;
2198 int ofs; 3117 int ofs;
2199 int len = read (fs_fd, buf, sizeof (buf)); 3118 int len = read (fs_fd, buf, sizeof (buf));
2200 3119
2201 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3120 for (ofs = 0; ofs < len; )
3121 {
3122 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2202 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3123 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3124 ofs += sizeof (struct inotify_event) + ev->len;
3125 }
2203} 3126}
2204 3127
2205void inline_size 3128inline_size void
3129ev_check_2625 (EV_P)
3130{
3131 /* kernels < 2.6.25 are borked
3132 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3133 */
3134 if (ev_linux_version () < 0x020619)
3135 return;
3136
3137 fs_2625 = 1;
3138}
3139
3140inline_size int
3141infy_newfd (void)
3142{
3143#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3144 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3145 if (fd >= 0)
3146 return fd;
3147#endif
3148 return inotify_init ();
3149}
3150
3151inline_size void
2206infy_init (EV_P) 3152infy_init (EV_P)
2207{ 3153{
2208 if (fs_fd != -2) 3154 if (fs_fd != -2)
2209 return; 3155 return;
2210 3156
3157 fs_fd = -1;
3158
3159 ev_check_2625 (EV_A);
3160
2211 fs_fd = inotify_init (); 3161 fs_fd = infy_newfd ();
2212 3162
2213 if (fs_fd >= 0) 3163 if (fs_fd >= 0)
2214 { 3164 {
3165 fd_intern (fs_fd);
2215 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3166 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2216 ev_set_priority (&fs_w, EV_MAXPRI); 3167 ev_set_priority (&fs_w, EV_MAXPRI);
2217 ev_io_start (EV_A_ &fs_w); 3168 ev_io_start (EV_A_ &fs_w);
3169 ev_unref (EV_A);
2218 } 3170 }
2219} 3171}
2220 3172
2221void inline_size 3173inline_size void
2222infy_fork (EV_P) 3174infy_fork (EV_P)
2223{ 3175{
2224 int slot; 3176 int slot;
2225 3177
2226 if (fs_fd < 0) 3178 if (fs_fd < 0)
2227 return; 3179 return;
2228 3180
3181 ev_ref (EV_A);
3182 ev_io_stop (EV_A_ &fs_w);
2229 close (fs_fd); 3183 close (fs_fd);
2230 fs_fd = inotify_init (); 3184 fs_fd = infy_newfd ();
2231 3185
3186 if (fs_fd >= 0)
3187 {
3188 fd_intern (fs_fd);
3189 ev_io_set (&fs_w, fs_fd, EV_READ);
3190 ev_io_start (EV_A_ &fs_w);
3191 ev_unref (EV_A);
3192 }
3193
2232 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3194 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2233 { 3195 {
2234 WL w_ = fs_hash [slot].head; 3196 WL w_ = fs_hash [slot].head;
2235 fs_hash [slot].head = 0; 3197 fs_hash [slot].head = 0;
2236 3198
2237 while (w_) 3199 while (w_)
… …
2242 w->wd = -1; 3204 w->wd = -1;
2243 3205
2244 if (fs_fd >= 0) 3206 if (fs_fd >= 0)
2245 infy_add (EV_A_ w); /* re-add, no matter what */ 3207 infy_add (EV_A_ w); /* re-add, no matter what */
2246 else 3208 else
3209 {
3210 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3211 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2247 ev_timer_start (EV_A_ &w->timer); 3212 ev_timer_again (EV_A_ &w->timer);
3213 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3214 }
2248 } 3215 }
2249
2250 } 3216 }
2251} 3217}
2252 3218
3219#endif
3220
3221#ifdef _WIN32
3222# define EV_LSTAT(p,b) _stati64 (p, b)
3223#else
3224# define EV_LSTAT(p,b) lstat (p, b)
2253#endif 3225#endif
2254 3226
2255void 3227void
2256ev_stat_stat (EV_P_ ev_stat *w) 3228ev_stat_stat (EV_P_ ev_stat *w)
2257{ 3229{
… …
2264static void noinline 3236static void noinline
2265stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3237stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2266{ 3238{
2267 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3239 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2268 3240
2269 /* we copy this here each the time so that */ 3241 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); 3242 ev_stat_stat (EV_A_ w);
2273 3243
2274 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3244 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2275 if ( 3245 if (
2276 w->prev.st_dev != w->attr.st_dev 3246 prev.st_dev != w->attr.st_dev
2277 || w->prev.st_ino != w->attr.st_ino 3247 || prev.st_ino != w->attr.st_ino
2278 || w->prev.st_mode != w->attr.st_mode 3248 || prev.st_mode != w->attr.st_mode
2279 || w->prev.st_nlink != w->attr.st_nlink 3249 || prev.st_nlink != w->attr.st_nlink
2280 || w->prev.st_uid != w->attr.st_uid 3250 || prev.st_uid != w->attr.st_uid
2281 || w->prev.st_gid != w->attr.st_gid 3251 || prev.st_gid != w->attr.st_gid
2282 || w->prev.st_rdev != w->attr.st_rdev 3252 || prev.st_rdev != w->attr.st_rdev
2283 || w->prev.st_size != w->attr.st_size 3253 || prev.st_size != w->attr.st_size
2284 || w->prev.st_atime != w->attr.st_atime 3254 || prev.st_atime != w->attr.st_atime
2285 || w->prev.st_mtime != w->attr.st_mtime 3255 || prev.st_mtime != w->attr.st_mtime
2286 || w->prev.st_ctime != w->attr.st_ctime 3256 || prev.st_ctime != w->attr.st_ctime
2287 ) { 3257 ) {
3258 /* we only update w->prev on actual differences */
3259 /* in case we test more often than invoke the callback, */
3260 /* to ensure that prev is always different to attr */
3261 w->prev = prev;
3262
2288 #if EV_USE_INOTIFY 3263 #if EV_USE_INOTIFY
3264 if (fs_fd >= 0)
3265 {
2289 infy_del (EV_A_ w); 3266 infy_del (EV_A_ w);
2290 infy_add (EV_A_ w); 3267 infy_add (EV_A_ w);
2291 ev_stat_stat (EV_A_ w); /* avoid race... */ 3268 ev_stat_stat (EV_A_ w); /* avoid race... */
3269 }
2292 #endif 3270 #endif
2293 3271
2294 ev_feed_event (EV_A_ w, EV_STAT); 3272 ev_feed_event (EV_A_ w, EV_STAT);
2295 } 3273 }
2296} 3274}
… …
2299ev_stat_start (EV_P_ ev_stat *w) 3277ev_stat_start (EV_P_ ev_stat *w)
2300{ 3278{
2301 if (expect_false (ev_is_active (w))) 3279 if (expect_false (ev_is_active (w)))
2302 return; 3280 return;
2303 3281
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); 3282 ev_stat_stat (EV_A_ w);
2309 3283
3284 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2310 if (w->interval < MIN_STAT_INTERVAL) 3285 w->interval = MIN_STAT_INTERVAL;
2311 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2312 3286
2313 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3287 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)); 3288 ev_set_priority (&w->timer, ev_priority (w));
2315 3289
2316#if EV_USE_INOTIFY 3290#if EV_USE_INOTIFY
2317 infy_init (EV_A); 3291 infy_init (EV_A);
2318 3292
2319 if (fs_fd >= 0) 3293 if (fs_fd >= 0)
2320 infy_add (EV_A_ w); 3294 infy_add (EV_A_ w);
2321 else 3295 else
2322#endif 3296#endif
3297 {
2323 ev_timer_start (EV_A_ &w->timer); 3298 ev_timer_again (EV_A_ &w->timer);
3299 ev_unref (EV_A);
3300 }
2324 3301
2325 ev_start (EV_A_ (W)w, 1); 3302 ev_start (EV_A_ (W)w, 1);
3303
3304 EV_FREQUENT_CHECK;
2326} 3305}
2327 3306
2328void 3307void
2329ev_stat_stop (EV_P_ ev_stat *w) 3308ev_stat_stop (EV_P_ ev_stat *w)
2330{ 3309{
2331 clear_pending (EV_A_ (W)w); 3310 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w))) 3311 if (expect_false (!ev_is_active (w)))
2333 return; 3312 return;
2334 3313
3314 EV_FREQUENT_CHECK;
3315
2335#if EV_USE_INOTIFY 3316#if EV_USE_INOTIFY
2336 infy_del (EV_A_ w); 3317 infy_del (EV_A_ w);
2337#endif 3318#endif
3319
3320 if (ev_is_active (&w->timer))
3321 {
3322 ev_ref (EV_A);
2338 ev_timer_stop (EV_A_ &w->timer); 3323 ev_timer_stop (EV_A_ &w->timer);
3324 }
2339 3325
2340 ev_stop (EV_A_ (W)w); 3326 ev_stop (EV_A_ (W)w);
3327
3328 EV_FREQUENT_CHECK;
2341} 3329}
2342#endif 3330#endif
2343 3331
2344#if EV_IDLE_ENABLE 3332#if EV_IDLE_ENABLE
2345void 3333void
… …
2347{ 3335{
2348 if (expect_false (ev_is_active (w))) 3336 if (expect_false (ev_is_active (w)))
2349 return; 3337 return;
2350 3338
2351 pri_adjust (EV_A_ (W)w); 3339 pri_adjust (EV_A_ (W)w);
3340
3341 EV_FREQUENT_CHECK;
2352 3342
2353 { 3343 {
2354 int active = ++idlecnt [ABSPRI (w)]; 3344 int active = ++idlecnt [ABSPRI (w)];
2355 3345
2356 ++idleall; 3346 ++idleall;
2357 ev_start (EV_A_ (W)w, active); 3347 ev_start (EV_A_ (W)w, active);
2358 3348
2359 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3349 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2360 idles [ABSPRI (w)][active - 1] = w; 3350 idles [ABSPRI (w)][active - 1] = w;
2361 } 3351 }
3352
3353 EV_FREQUENT_CHECK;
2362} 3354}
2363 3355
2364void 3356void
2365ev_idle_stop (EV_P_ ev_idle *w) 3357ev_idle_stop (EV_P_ ev_idle *w)
2366{ 3358{
2367 clear_pending (EV_A_ (W)w); 3359 clear_pending (EV_A_ (W)w);
2368 if (expect_false (!ev_is_active (w))) 3360 if (expect_false (!ev_is_active (w)))
2369 return; 3361 return;
2370 3362
3363 EV_FREQUENT_CHECK;
3364
2371 { 3365 {
2372 int active = ((W)w)->active; 3366 int active = ev_active (w);
2373 3367
2374 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3368 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2375 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3369 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2376 3370
2377 ev_stop (EV_A_ (W)w); 3371 ev_stop (EV_A_ (W)w);
2378 --idleall; 3372 --idleall;
2379 } 3373 }
2380}
2381#endif
2382 3374
3375 EV_FREQUENT_CHECK;
3376}
3377#endif
3378
3379#if EV_PREPARE_ENABLE
2383void 3380void
2384ev_prepare_start (EV_P_ ev_prepare *w) 3381ev_prepare_start (EV_P_ ev_prepare *w)
2385{ 3382{
2386 if (expect_false (ev_is_active (w))) 3383 if (expect_false (ev_is_active (w)))
2387 return; 3384 return;
3385
3386 EV_FREQUENT_CHECK;
2388 3387
2389 ev_start (EV_A_ (W)w, ++preparecnt); 3388 ev_start (EV_A_ (W)w, ++preparecnt);
2390 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3389 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2391 prepares [preparecnt - 1] = w; 3390 prepares [preparecnt - 1] = w;
3391
3392 EV_FREQUENT_CHECK;
2392} 3393}
2393 3394
2394void 3395void
2395ev_prepare_stop (EV_P_ ev_prepare *w) 3396ev_prepare_stop (EV_P_ ev_prepare *w)
2396{ 3397{
2397 clear_pending (EV_A_ (W)w); 3398 clear_pending (EV_A_ (W)w);
2398 if (expect_false (!ev_is_active (w))) 3399 if (expect_false (!ev_is_active (w)))
2399 return; 3400 return;
2400 3401
3402 EV_FREQUENT_CHECK;
3403
2401 { 3404 {
2402 int active = ((W)w)->active; 3405 int active = ev_active (w);
3406
2403 prepares [active - 1] = prepares [--preparecnt]; 3407 prepares [active - 1] = prepares [--preparecnt];
2404 ((W)prepares [active - 1])->active = active; 3408 ev_active (prepares [active - 1]) = active;
2405 } 3409 }
2406 3410
2407 ev_stop (EV_A_ (W)w); 3411 ev_stop (EV_A_ (W)w);
2408}
2409 3412
3413 EV_FREQUENT_CHECK;
3414}
3415#endif
3416
3417#if EV_CHECK_ENABLE
2410void 3418void
2411ev_check_start (EV_P_ ev_check *w) 3419ev_check_start (EV_P_ ev_check *w)
2412{ 3420{
2413 if (expect_false (ev_is_active (w))) 3421 if (expect_false (ev_is_active (w)))
2414 return; 3422 return;
3423
3424 EV_FREQUENT_CHECK;
2415 3425
2416 ev_start (EV_A_ (W)w, ++checkcnt); 3426 ev_start (EV_A_ (W)w, ++checkcnt);
2417 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3427 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2418 checks [checkcnt - 1] = w; 3428 checks [checkcnt - 1] = w;
3429
3430 EV_FREQUENT_CHECK;
2419} 3431}
2420 3432
2421void 3433void
2422ev_check_stop (EV_P_ ev_check *w) 3434ev_check_stop (EV_P_ ev_check *w)
2423{ 3435{
2424 clear_pending (EV_A_ (W)w); 3436 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w))) 3437 if (expect_false (!ev_is_active (w)))
2426 return; 3438 return;
2427 3439
3440 EV_FREQUENT_CHECK;
3441
2428 { 3442 {
2429 int active = ((W)w)->active; 3443 int active = ev_active (w);
3444
2430 checks [active - 1] = checks [--checkcnt]; 3445 checks [active - 1] = checks [--checkcnt];
2431 ((W)checks [active - 1])->active = active; 3446 ev_active (checks [active - 1]) = active;
2432 } 3447 }
2433 3448
2434 ev_stop (EV_A_ (W)w); 3449 ev_stop (EV_A_ (W)w);
3450
3451 EV_FREQUENT_CHECK;
2435} 3452}
3453#endif
2436 3454
2437#if EV_EMBED_ENABLE 3455#if EV_EMBED_ENABLE
2438void noinline 3456void noinline
2439ev_embed_sweep (EV_P_ ev_embed *w) 3457ev_embed_sweep (EV_P_ ev_embed *w)
2440{ 3458{
2441 ev_loop (w->other, EVLOOP_NONBLOCK); 3459 ev_run (w->other, EVRUN_NOWAIT);
2442} 3460}
2443 3461
2444static void 3462static void
2445embed_io_cb (EV_P_ ev_io *io, int revents) 3463embed_io_cb (EV_P_ ev_io *io, int revents)
2446{ 3464{
2447 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3465 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2448 3466
2449 if (ev_cb (w)) 3467 if (ev_cb (w))
2450 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3468 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2451 else 3469 else
2452 ev_loop (w->other, EVLOOP_NONBLOCK); 3470 ev_run (w->other, EVRUN_NOWAIT);
2453} 3471}
2454 3472
2455static void 3473static void
2456embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3474embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2457{ 3475{
2458 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3476 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2459 3477
2460 { 3478 {
2461 struct ev_loop *loop = w->other; 3479 EV_P = w->other;
2462 3480
2463 while (fdchangecnt) 3481 while (fdchangecnt)
2464 { 3482 {
2465 fd_reify (EV_A); 3483 fd_reify (EV_A);
2466 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3484 ev_run (EV_A_ EVRUN_NOWAIT);
2467 } 3485 }
2468 } 3486 }
3487}
3488
3489static void
3490embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3491{
3492 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3493
3494 ev_embed_stop (EV_A_ w);
3495
3496 {
3497 EV_P = w->other;
3498
3499 ev_loop_fork (EV_A);
3500 ev_run (EV_A_ EVRUN_NOWAIT);
3501 }
3502
3503 ev_embed_start (EV_A_ w);
2469} 3504}
2470 3505
2471#if 0 3506#if 0
2472static void 3507static void
2473embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3508embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2481{ 3516{
2482 if (expect_false (ev_is_active (w))) 3517 if (expect_false (ev_is_active (w)))
2483 return; 3518 return;
2484 3519
2485 { 3520 {
2486 struct ev_loop *loop = w->other; 3521 EV_P = w->other;
2487 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3522 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); 3523 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2489 } 3524 }
3525
3526 EV_FREQUENT_CHECK;
2490 3527
2491 ev_set_priority (&w->io, ev_priority (w)); 3528 ev_set_priority (&w->io, ev_priority (w));
2492 ev_io_start (EV_A_ &w->io); 3529 ev_io_start (EV_A_ &w->io);
2493 3530
2494 ev_prepare_init (&w->prepare, embed_prepare_cb); 3531 ev_prepare_init (&w->prepare, embed_prepare_cb);
2495 ev_set_priority (&w->prepare, EV_MINPRI); 3532 ev_set_priority (&w->prepare, EV_MINPRI);
2496 ev_prepare_start (EV_A_ &w->prepare); 3533 ev_prepare_start (EV_A_ &w->prepare);
2497 3534
3535 ev_fork_init (&w->fork, embed_fork_cb);
3536 ev_fork_start (EV_A_ &w->fork);
3537
2498 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3538 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2499 3539
2500 ev_start (EV_A_ (W)w, 1); 3540 ev_start (EV_A_ (W)w, 1);
3541
3542 EV_FREQUENT_CHECK;
2501} 3543}
2502 3544
2503void 3545void
2504ev_embed_stop (EV_P_ ev_embed *w) 3546ev_embed_stop (EV_P_ ev_embed *w)
2505{ 3547{
2506 clear_pending (EV_A_ (W)w); 3548 clear_pending (EV_A_ (W)w);
2507 if (expect_false (!ev_is_active (w))) 3549 if (expect_false (!ev_is_active (w)))
2508 return; 3550 return;
2509 3551
3552 EV_FREQUENT_CHECK;
3553
2510 ev_io_stop (EV_A_ &w->io); 3554 ev_io_stop (EV_A_ &w->io);
2511 ev_prepare_stop (EV_A_ &w->prepare); 3555 ev_prepare_stop (EV_A_ &w->prepare);
3556 ev_fork_stop (EV_A_ &w->fork);
2512 3557
2513 ev_stop (EV_A_ (W)w); 3558 ev_stop (EV_A_ (W)w);
3559
3560 EV_FREQUENT_CHECK;
2514} 3561}
2515#endif 3562#endif
2516 3563
2517#if EV_FORK_ENABLE 3564#if EV_FORK_ENABLE
2518void 3565void
2519ev_fork_start (EV_P_ ev_fork *w) 3566ev_fork_start (EV_P_ ev_fork *w)
2520{ 3567{
2521 if (expect_false (ev_is_active (w))) 3568 if (expect_false (ev_is_active (w)))
2522 return; 3569 return;
3570
3571 EV_FREQUENT_CHECK;
2523 3572
2524 ev_start (EV_A_ (W)w, ++forkcnt); 3573 ev_start (EV_A_ (W)w, ++forkcnt);
2525 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3574 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2526 forks [forkcnt - 1] = w; 3575 forks [forkcnt - 1] = w;
3576
3577 EV_FREQUENT_CHECK;
2527} 3578}
2528 3579
2529void 3580void
2530ev_fork_stop (EV_P_ ev_fork *w) 3581ev_fork_stop (EV_P_ ev_fork *w)
2531{ 3582{
2532 clear_pending (EV_A_ (W)w); 3583 clear_pending (EV_A_ (W)w);
2533 if (expect_false (!ev_is_active (w))) 3584 if (expect_false (!ev_is_active (w)))
2534 return; 3585 return;
2535 3586
3587 EV_FREQUENT_CHECK;
3588
2536 { 3589 {
2537 int active = ((W)w)->active; 3590 int active = ev_active (w);
3591
2538 forks [active - 1] = forks [--forkcnt]; 3592 forks [active - 1] = forks [--forkcnt];
2539 ((W)forks [active - 1])->active = active; 3593 ev_active (forks [active - 1]) = active;
2540 } 3594 }
2541 3595
2542 ev_stop (EV_A_ (W)w); 3596 ev_stop (EV_A_ (W)w);
2543}
2544#endif
2545 3597
3598 EV_FREQUENT_CHECK;
3599}
3600#endif
3601
2546#if EV_ASYNC_ENABLE 3602#if EV_CLEANUP_ENABLE
2547void 3603void
2548ev_async_start (EV_P_ ev_async *w) 3604ev_cleanup_start (EV_P_ ev_cleanup *w)
2549{ 3605{
2550 if (expect_false (ev_is_active (w))) 3606 if (expect_false (ev_is_active (w)))
2551 return; 3607 return;
2552 3608
3609 EV_FREQUENT_CHECK;
3610
3611 ev_start (EV_A_ (W)w, ++cleanupcnt);
3612 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3613 cleanups [cleanupcnt - 1] = w;
3614
3615 /* cleanup watchers should never keep a refcount on the loop */
3616 ev_unref (EV_A);
3617 EV_FREQUENT_CHECK;
3618}
3619
3620void
3621ev_cleanup_stop (EV_P_ ev_cleanup *w)
3622{
3623 clear_pending (EV_A_ (W)w);
3624 if (expect_false (!ev_is_active (w)))
3625 return;
3626
3627 EV_FREQUENT_CHECK;
3628 ev_ref (EV_A);
3629
3630 {
3631 int active = ev_active (w);
3632
3633 cleanups [active - 1] = cleanups [--cleanupcnt];
3634 ev_active (cleanups [active - 1]) = active;
3635 }
3636
3637 ev_stop (EV_A_ (W)w);
3638
3639 EV_FREQUENT_CHECK;
3640}
3641#endif
3642
3643#if EV_ASYNC_ENABLE
3644void
3645ev_async_start (EV_P_ ev_async *w)
3646{
3647 if (expect_false (ev_is_active (w)))
3648 return;
3649
3650 w->sent = 0;
3651
2553 evpipe_init (EV_A); 3652 evpipe_init (EV_A);
3653
3654 EV_FREQUENT_CHECK;
2554 3655
2555 ev_start (EV_A_ (W)w, ++asynccnt); 3656 ev_start (EV_A_ (W)w, ++asynccnt);
2556 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3657 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2557 asyncs [asynccnt - 1] = w; 3658 asyncs [asynccnt - 1] = w;
3659
3660 EV_FREQUENT_CHECK;
2558} 3661}
2559 3662
2560void 3663void
2561ev_async_stop (EV_P_ ev_async *w) 3664ev_async_stop (EV_P_ ev_async *w)
2562{ 3665{
2563 clear_pending (EV_A_ (W)w); 3666 clear_pending (EV_A_ (W)w);
2564 if (expect_false (!ev_is_active (w))) 3667 if (expect_false (!ev_is_active (w)))
2565 return; 3668 return;
2566 3669
3670 EV_FREQUENT_CHECK;
3671
2567 { 3672 {
2568 int active = ((W)w)->active; 3673 int active = ev_active (w);
3674
2569 asyncs [active - 1] = asyncs [--asynccnt]; 3675 asyncs [active - 1] = asyncs [--asynccnt];
2570 ((W)asyncs [active - 1])->active = active; 3676 ev_active (asyncs [active - 1]) = active;
2571 } 3677 }
2572 3678
2573 ev_stop (EV_A_ (W)w); 3679 ev_stop (EV_A_ (W)w);
3680
3681 EV_FREQUENT_CHECK;
2574} 3682}
2575 3683
2576void 3684void
2577ev_async_send (EV_P_ ev_async *w) 3685ev_async_send (EV_P_ ev_async *w)
2578{ 3686{
2579 w->sent = 1; 3687 w->sent = 1;
2580 evpipe_write (EV_A_ &gotasync); 3688 evpipe_write (EV_A_ &async_pending);
2581} 3689}
2582#endif 3690#endif
2583 3691
2584/*****************************************************************************/ 3692/*****************************************************************************/
2585 3693
… …
2595once_cb (EV_P_ struct ev_once *once, int revents) 3703once_cb (EV_P_ struct ev_once *once, int revents)
2596{ 3704{
2597 void (*cb)(int revents, void *arg) = once->cb; 3705 void (*cb)(int revents, void *arg) = once->cb;
2598 void *arg = once->arg; 3706 void *arg = once->arg;
2599 3707
2600 ev_io_stop (EV_A_ &once->io); 3708 ev_io_stop (EV_A_ &once->io);
2601 ev_timer_stop (EV_A_ &once->to); 3709 ev_timer_stop (EV_A_ &once->to);
2602 ev_free (once); 3710 ev_free (once);
2603 3711
2604 cb (revents, arg); 3712 cb (revents, arg);
2605} 3713}
2606 3714
2607static void 3715static void
2608once_cb_io (EV_P_ ev_io *w, int revents) 3716once_cb_io (EV_P_ ev_io *w, int revents)
2609{ 3717{
2610 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3718 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3719
3720 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2611} 3721}
2612 3722
2613static void 3723static void
2614once_cb_to (EV_P_ ev_timer *w, int revents) 3724once_cb_to (EV_P_ ev_timer *w, int revents)
2615{ 3725{
2616 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3726 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3727
3728 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2617} 3729}
2618 3730
2619void 3731void
2620ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3732ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2621{ 3733{
2622 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3734 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2623 3735
2624 if (expect_false (!once)) 3736 if (expect_false (!once))
2625 { 3737 {
2626 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3738 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2627 return; 3739 return;
2628 } 3740 }
2629 3741
2630 once->cb = cb; 3742 once->cb = cb;
2631 once->arg = arg; 3743 once->arg = arg;
… …
2643 ev_timer_set (&once->to, timeout, 0.); 3755 ev_timer_set (&once->to, timeout, 0.);
2644 ev_timer_start (EV_A_ &once->to); 3756 ev_timer_start (EV_A_ &once->to);
2645 } 3757 }
2646} 3758}
2647 3759
3760/*****************************************************************************/
3761
3762#if EV_WALK_ENABLE
3763void
3764ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3765{
3766 int i, j;
3767 ev_watcher_list *wl, *wn;
3768
3769 if (types & (EV_IO | EV_EMBED))
3770 for (i = 0; i < anfdmax; ++i)
3771 for (wl = anfds [i].head; wl; )
3772 {
3773 wn = wl->next;
3774
3775#if EV_EMBED_ENABLE
3776 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3777 {
3778 if (types & EV_EMBED)
3779 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3780 }
3781 else
3782#endif
3783#if EV_USE_INOTIFY
3784 if (ev_cb ((ev_io *)wl) == infy_cb)
3785 ;
3786 else
3787#endif
3788 if ((ev_io *)wl != &pipe_w)
3789 if (types & EV_IO)
3790 cb (EV_A_ EV_IO, wl);
3791
3792 wl = wn;
3793 }
3794
3795 if (types & (EV_TIMER | EV_STAT))
3796 for (i = timercnt + HEAP0; i-- > HEAP0; )
3797#if EV_STAT_ENABLE
3798 /*TODO: timer is not always active*/
3799 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3800 {
3801 if (types & EV_STAT)
3802 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3803 }
3804 else
3805#endif
3806 if (types & EV_TIMER)
3807 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3808
3809#if EV_PERIODIC_ENABLE
3810 if (types & EV_PERIODIC)
3811 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3812 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3813#endif
3814
3815#if EV_IDLE_ENABLE
3816 if (types & EV_IDLE)
3817 for (j = NUMPRI; i--; )
3818 for (i = idlecnt [j]; i--; )
3819 cb (EV_A_ EV_IDLE, idles [j][i]);
3820#endif
3821
3822#if EV_FORK_ENABLE
3823 if (types & EV_FORK)
3824 for (i = forkcnt; i--; )
3825 if (ev_cb (forks [i]) != embed_fork_cb)
3826 cb (EV_A_ EV_FORK, forks [i]);
3827#endif
3828
3829#if EV_ASYNC_ENABLE
3830 if (types & EV_ASYNC)
3831 for (i = asynccnt; i--; )
3832 cb (EV_A_ EV_ASYNC, asyncs [i]);
3833#endif
3834
3835#if EV_PREPARE_ENABLE
3836 if (types & EV_PREPARE)
3837 for (i = preparecnt; i--; )
3838# if EV_EMBED_ENABLE
3839 if (ev_cb (prepares [i]) != embed_prepare_cb)
3840# endif
3841 cb (EV_A_ EV_PREPARE, prepares [i]);
3842#endif
3843
3844#if EV_CHECK_ENABLE
3845 if (types & EV_CHECK)
3846 for (i = checkcnt; i--; )
3847 cb (EV_A_ EV_CHECK, checks [i]);
3848#endif
3849
3850#if EV_SIGNAL_ENABLE
3851 if (types & EV_SIGNAL)
3852 for (i = 0; i < EV_NSIG - 1; ++i)
3853 for (wl = signals [i].head; wl; )
3854 {
3855 wn = wl->next;
3856 cb (EV_A_ EV_SIGNAL, wl);
3857 wl = wn;
3858 }
3859#endif
3860
3861#if EV_CHILD_ENABLE
3862 if (types & EV_CHILD)
3863 for (i = (EV_PID_HASHSIZE); i--; )
3864 for (wl = childs [i]; wl; )
3865 {
3866 wn = wl->next;
3867 cb (EV_A_ EV_CHILD, wl);
3868 wl = wn;
3869 }
3870#endif
3871/* EV_STAT 0x00001000 /* stat data changed */
3872/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3873}
3874#endif
3875
2648#if EV_MULTIPLICITY 3876#if EV_MULTIPLICITY
2649 #include "ev_wrap.h" 3877 #include "ev_wrap.h"
2650#endif 3878#endif
2651 3879
2652#ifdef __cplusplus 3880EV_CPP(})
2653}
2654#endif
2655 3881

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