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Comparing libev/ev.c (file contents):
Revision 1.227 by root, Fri May 2 07:20:01 2008 UTC vs.
Revision 1.371 by root, Mon Feb 7 21:45:32 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
… …
253# undef EV_USE_INOTIFY 376# undef EV_USE_INOTIFY
254# define EV_USE_INOTIFY 0 377# define EV_USE_INOTIFY 0
255#endif 378#endif
256 379
257#if !EV_USE_NANOSLEEP 380#if !EV_USE_NANOSLEEP
258# ifndef _WIN32 381/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux)
259# include <sys/select.h> 383# include <sys/select.h>
260# endif 384# endif
261#endif 385#endif
262 386
263#if EV_USE_INOTIFY 387#if EV_USE_INOTIFY
388# include <sys/statfs.h>
264# include <sys/inotify.h> 389# include <sys/inotify.h>
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0
394# endif
265#endif 395#endif
266 396
267#if EV_SELECT_IS_WINSOCKET 397#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 398# include <winsock.h>
269#endif 399#endif
270 400
271#if EV_USE_EVENTFD 401#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h> 403# include <stdint.h>
274# ifdef __cplusplus 404# ifndef EFD_NONBLOCK
275extern "C" { 405# define EFD_NONBLOCK O_NONBLOCK
276# endif 406# endif
277int eventfd (unsigned int initval, int flags); 407# ifndef EFD_CLOEXEC
278# ifdef __cplusplus 408# ifdef O_CLOEXEC
279} 409# define EFD_CLOEXEC O_CLOEXEC
410# else
411# define EFD_CLOEXEC 02000000
412# endif
280# endif 413# endif
414EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
415#endif
416
417#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h>
420# ifndef SFD_NONBLOCK
421# define SFD_NONBLOCK O_NONBLOCK
422# endif
423# ifndef SFD_CLOEXEC
424# ifdef O_CLOEXEC
425# define SFD_CLOEXEC O_CLOEXEC
426# else
427# define SFD_CLOEXEC 02000000
428# endif
429# endif
430EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
431
432struct signalfd_siginfo
433{
434 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)];
436};
281#endif 437#endif
282 438
283/**/ 439/**/
440
441#if EV_VERIFY >= 3
442# define EV_FREQUENT_CHECK ev_verify (EV_A)
443#else
444# define EV_FREQUENT_CHECK do { } while (0)
445#endif
284 446
285/* 447/*
286 * This is used to avoid floating point rounding problems. 448 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics 449 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding 450 * to ensure progress, time-wise, even when rounding
… …
292 */ 454 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294 456
295#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 457#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) */ 458#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 */ 459
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
298 462
299#if __GNUC__ >= 4 463#if __GNUC__ >= 4
300# define expect(expr,value) __builtin_expect ((expr),(value)) 464# define expect(expr,value) __builtin_expect ((expr),(value))
301# define noinline __attribute__ ((noinline)) 465# define noinline __attribute__ ((noinline))
302#else 466#else
… …
309 473
310#define expect_false(expr) expect ((expr) != 0, 0) 474#define expect_false(expr) expect ((expr) != 0, 0)
311#define expect_true(expr) expect ((expr) != 0, 1) 475#define expect_true(expr) expect ((expr) != 0, 1)
312#define inline_size static inline 476#define inline_size static inline
313 477
314#if EV_MINIMAL 478#if EV_FEATURE_CODE
479# define inline_speed static inline
480#else
315# define inline_speed static noinline 481# define inline_speed static noinline
482#endif
483
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485
486#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0)
316#else 488#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) 489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif
322 491
323#define EMPTY /* required for microsofts broken pseudo-c compiler */ 492#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */ 493#define EMPTY2(a,b) /* used to suppress some warnings */
325 494
326typedef ev_watcher *W; 495typedef ev_watcher *W;
327typedef ev_watcher_list *WL; 496typedef ev_watcher_list *WL;
328typedef ev_watcher_time *WT; 497typedef ev_watcher_time *WT;
329 498
499#define ev_active(w) ((W)(w))->active
500#define ev_at(w) ((WT)(w))->at
501
502#if EV_USE_REALTIME
503/* sig_atomic_t is used to avoid per-thread variables or locking but still */
504/* giving it a reasonably high chance of working on typical architectures */
505static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
506#endif
507
330#if EV_USE_MONOTONIC 508#if EV_USE_MONOTONIC
331/* sig_atomic_t is used to avoid per-thread variables or locking but still */
332/* giving it a reasonably high chance of working on typical architetcures */
333static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 509static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
510#endif
511
512#ifndef EV_FD_TO_WIN32_HANDLE
513# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
514#endif
515#ifndef EV_WIN32_HANDLE_TO_FD
516# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
517#endif
518#ifndef EV_WIN32_CLOSE_FD
519# define EV_WIN32_CLOSE_FD(fd) close (fd)
334#endif 520#endif
335 521
336#ifdef _WIN32 522#ifdef _WIN32
337# include "ev_win32.c" 523# include "ev_win32.c"
338#endif 524#endif
339 525
340/*****************************************************************************/ 526/*****************************************************************************/
341 527
528#ifdef __linux
529# include <sys/utsname.h>
530#endif
531
532static unsigned int noinline
533ev_linux_version (void)
534{
535#ifdef __linux
536 unsigned int v = 0;
537 struct utsname buf;
538 int i;
539 char *p = buf.release;
540
541 if (uname (&buf))
542 return 0;
543
544 for (i = 3+1; --i; )
545 {
546 unsigned int c = 0;
547
548 for (;;)
549 {
550 if (*p >= '0' && *p <= '9')
551 c = c * 10 + *p++ - '0';
552 else
553 {
554 p += *p == '.';
555 break;
556 }
557 }
558
559 v = (v << 8) | c;
560 }
561
562 return v;
563#else
564 return 0;
565#endif
566}
567
568/*****************************************************************************/
569
570#if EV_AVOID_STDIO
571static void noinline
572ev_printerr (const char *msg)
573{
574 write (STDERR_FILENO, msg, strlen (msg));
575}
576#endif
577
342static void (*syserr_cb)(const char *msg); 578static void (*syserr_cb)(const char *msg);
343 579
344void 580void
345ev_set_syserr_cb (void (*cb)(const char *msg)) 581ev_set_syserr_cb (void (*cb)(const char *msg))
346{ 582{
347 syserr_cb = cb; 583 syserr_cb = cb;
348} 584}
349 585
350static void noinline 586static void noinline
351syserr (const char *msg) 587ev_syserr (const char *msg)
352{ 588{
353 if (!msg) 589 if (!msg)
354 msg = "(libev) system error"; 590 msg = "(libev) system error";
355 591
356 if (syserr_cb) 592 if (syserr_cb)
357 syserr_cb (msg); 593 syserr_cb (msg);
358 else 594 else
359 { 595 {
596#if EV_AVOID_STDIO
597 ev_printerr (msg);
598 ev_printerr (": ");
599 ev_printerr (strerror (errno));
600 ev_printerr ("\n");
601#else
360 perror (msg); 602 perror (msg);
603#endif
361 abort (); 604 abort ();
362 } 605 }
363} 606}
364 607
365static void * 608static void *
366ev_realloc_emul (void *ptr, long size) 609ev_realloc_emul (void *ptr, long size)
367{ 610{
611#if __GLIBC__
612 return realloc (ptr, size);
613#else
368 /* some systems, notably openbsd and darwin, fail to properly 614 /* some systems, notably openbsd and darwin, fail to properly
369 * implement realloc (x, 0) (as required by both ansi c-98 and 615 * implement realloc (x, 0) (as required by both ansi c-89 and
370 * the single unix specification, so work around them here. 616 * the single unix specification, so work around them here.
371 */ 617 */
372 618
373 if (size) 619 if (size)
374 return realloc (ptr, size); 620 return realloc (ptr, size);
375 621
376 free (ptr); 622 free (ptr);
377 return 0; 623 return 0;
624#endif
378} 625}
379 626
380static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
381 628
382void 629void
… …
390{ 637{
391 ptr = alloc (ptr, size); 638 ptr = alloc (ptr, size);
392 639
393 if (!ptr && size) 640 if (!ptr && size)
394 { 641 {
642#if EV_AVOID_STDIO
643 ev_printerr ("(libev) memory allocation failed, aborting.\n");
644#else
395 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 645 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
646#endif
396 abort (); 647 abort ();
397 } 648 }
398 649
399 return ptr; 650 return ptr;
400} 651}
… …
402#define ev_malloc(size) ev_realloc (0, (size)) 653#define ev_malloc(size) ev_realloc (0, (size))
403#define ev_free(ptr) ev_realloc ((ptr), 0) 654#define ev_free(ptr) ev_realloc ((ptr), 0)
404 655
405/*****************************************************************************/ 656/*****************************************************************************/
406 657
658/* set in reify when reification needed */
659#define EV_ANFD_REIFY 1
660
661/* file descriptor info structure */
407typedef struct 662typedef struct
408{ 663{
409 WL head; 664 WL head;
410 unsigned char events; 665 unsigned char events; /* the events watched for */
666 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
667 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
411 unsigned char reify; 668 unsigned char unused;
669#if EV_USE_EPOLL
670 unsigned int egen; /* generation counter to counter epoll bugs */
671#endif
412#if EV_SELECT_IS_WINSOCKET 672#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
413 SOCKET handle; 673 SOCKET handle;
414#endif 674#endif
675#if EV_USE_IOCP
676 OVERLAPPED or, ow;
677#endif
415} ANFD; 678} ANFD;
416 679
680/* stores the pending event set for a given watcher */
417typedef struct 681typedef struct
418{ 682{
419 W w; 683 W w;
420 int events; 684 int events; /* the pending event set for the given watcher */
421} ANPENDING; 685} ANPENDING;
422 686
423#if EV_USE_INOTIFY 687#if EV_USE_INOTIFY
688/* hash table entry per inotify-id */
424typedef struct 689typedef struct
425{ 690{
426 WL head; 691 WL head;
427} ANFS; 692} ANFS;
693#endif
694
695/* Heap Entry */
696#if EV_HEAP_CACHE_AT
697 /* a heap element */
698 typedef struct {
699 ev_tstamp at;
700 WT w;
701 } ANHE;
702
703 #define ANHE_w(he) (he).w /* access watcher, read-write */
704 #define ANHE_at(he) (he).at /* access cached at, read-only */
705 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
706#else
707 /* a heap element */
708 typedef WT ANHE;
709
710 #define ANHE_w(he) (he)
711 #define ANHE_at(he) (he)->at
712 #define ANHE_at_cache(he)
428#endif 713#endif
429 714
430#if EV_MULTIPLICITY 715#if EV_MULTIPLICITY
431 716
432 struct ev_loop 717 struct ev_loop
… …
451 736
452 static int ev_default_loop_ptr; 737 static int ev_default_loop_ptr;
453 738
454#endif 739#endif
455 740
741#if EV_FEATURE_API
742# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
743# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
744# define EV_INVOKE_PENDING invoke_cb (EV_A)
745#else
746# define EV_RELEASE_CB (void)0
747# define EV_ACQUIRE_CB (void)0
748# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
749#endif
750
751#define EVBREAK_RECURSE 0x80
752
456/*****************************************************************************/ 753/*****************************************************************************/
457 754
755#ifndef EV_HAVE_EV_TIME
458ev_tstamp 756ev_tstamp
459ev_time (void) 757ev_time (void)
460{ 758{
461#if EV_USE_REALTIME 759#if EV_USE_REALTIME
760 if (expect_true (have_realtime))
761 {
462 struct timespec ts; 762 struct timespec ts;
463 clock_gettime (CLOCK_REALTIME, &ts); 763 clock_gettime (CLOCK_REALTIME, &ts);
464 return ts.tv_sec + ts.tv_nsec * 1e-9; 764 return ts.tv_sec + ts.tv_nsec * 1e-9;
465#else 765 }
766#endif
767
466 struct timeval tv; 768 struct timeval tv;
467 gettimeofday (&tv, 0); 769 gettimeofday (&tv, 0);
468 return tv.tv_sec + tv.tv_usec * 1e-6; 770 return tv.tv_sec + tv.tv_usec * 1e-6;
469#endif
470} 771}
772#endif
471 773
472ev_tstamp inline_size 774inline_size ev_tstamp
473get_clock (void) 775get_clock (void)
474{ 776{
475#if EV_USE_MONOTONIC 777#if EV_USE_MONOTONIC
476 if (expect_true (have_monotonic)) 778 if (expect_true (have_monotonic))
477 { 779 {
… …
498 if (delay > 0.) 800 if (delay > 0.)
499 { 801 {
500#if EV_USE_NANOSLEEP 802#if EV_USE_NANOSLEEP
501 struct timespec ts; 803 struct timespec ts;
502 804
503 ts.tv_sec = (time_t)delay; 805 EV_TS_SET (ts, delay);
504 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
505
506 nanosleep (&ts, 0); 806 nanosleep (&ts, 0);
507#elif defined(_WIN32) 807#elif defined(_WIN32)
508 Sleep ((unsigned long)(delay * 1e3)); 808 Sleep ((unsigned long)(delay * 1e3));
509#else 809#else
510 struct timeval tv; 810 struct timeval tv;
511 811
512 tv.tv_sec = (time_t)delay; 812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
513 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 813 /* something not guaranteed by newer posix versions, but guaranteed */
514 814 /* by older ones */
815 EV_TV_SET (tv, delay);
515 select (0, 0, 0, 0, &tv); 816 select (0, 0, 0, 0, &tv);
516#endif 817#endif
517 } 818 }
518} 819}
519 820
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
520/*****************************************************************************/ 829/*****************************************************************************/
521 830
522int inline_size 831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
832
833/* find a suitable new size for the given array, */
834/* hopefully by rounding to a nice-to-malloc size */
835inline_size int
523array_nextsize (int elem, int cur, int cnt) 836array_nextsize (int elem, int cur, int cnt)
524{ 837{
525 int ncur = cur + 1; 838 int ncur = cur + 1;
526 839
527 do 840 do
528 ncur <<= 1; 841 ncur <<= 1;
529 while (cnt > ncur); 842 while (cnt > ncur);
530 843
531 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 844 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
532 if (elem * ncur > 4096) 845 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
533 { 846 {
534 ncur *= elem; 847 ncur *= elem;
535 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 848 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
536 ncur = ncur - sizeof (void *) * 4; 849 ncur = ncur - sizeof (void *) * 4;
537 ncur /= elem; 850 ncur /= elem;
538 } 851 }
539 852
540 return ncur; 853 return ncur;
… …
544array_realloc (int elem, void *base, int *cur, int cnt) 857array_realloc (int elem, void *base, int *cur, int cnt)
545{ 858{
546 *cur = array_nextsize (elem, *cur, cnt); 859 *cur = array_nextsize (elem, *cur, cnt);
547 return ev_realloc (base, elem * *cur); 860 return ev_realloc (base, elem * *cur);
548} 861}
862
863#define array_init_zero(base,count) \
864 memset ((void *)(base), 0, sizeof (*(base)) * (count))
549 865
550#define array_needsize(type,base,cur,cnt,init) \ 866#define array_needsize(type,base,cur,cnt,init) \
551 if (expect_false ((cnt) > (cur))) \ 867 if (expect_false ((cnt) > (cur))) \
552 { \ 868 { \
553 int ocur_ = (cur); \ 869 int ocur_ = (cur); \
… …
565 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 881 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
566 } 882 }
567#endif 883#endif
568 884
569#define array_free(stem, idx) \ 885#define array_free(stem, idx) \
570 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 886 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
571 887
572/*****************************************************************************/ 888/*****************************************************************************/
889
890/* dummy callback for pending events */
891static void noinline
892pendingcb (EV_P_ ev_prepare *w, int revents)
893{
894}
573 895
574void noinline 896void noinline
575ev_feed_event (EV_P_ void *w, int revents) 897ev_feed_event (EV_P_ void *w, int revents)
576{ 898{
577 W w_ = (W)w; 899 W w_ = (W)w;
… …
586 pendings [pri][w_->pending - 1].w = w_; 908 pendings [pri][w_->pending - 1].w = w_;
587 pendings [pri][w_->pending - 1].events = revents; 909 pendings [pri][w_->pending - 1].events = revents;
588 } 910 }
589} 911}
590 912
591void inline_speed 913inline_speed void
914feed_reverse (EV_P_ W w)
915{
916 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
917 rfeeds [rfeedcnt++] = w;
918}
919
920inline_size void
921feed_reverse_done (EV_P_ int revents)
922{
923 do
924 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
925 while (rfeedcnt);
926}
927
928inline_speed void
592queue_events (EV_P_ W *events, int eventcnt, int type) 929queue_events (EV_P_ W *events, int eventcnt, int type)
593{ 930{
594 int i; 931 int i;
595 932
596 for (i = 0; i < eventcnt; ++i) 933 for (i = 0; i < eventcnt; ++i)
597 ev_feed_event (EV_A_ events [i], type); 934 ev_feed_event (EV_A_ events [i], type);
598} 935}
599 936
600/*****************************************************************************/ 937/*****************************************************************************/
601 938
602void inline_size 939inline_speed void
603anfds_init (ANFD *base, int count)
604{
605 while (count--)
606 {
607 base->head = 0;
608 base->events = EV_NONE;
609 base->reify = 0;
610
611 ++base;
612 }
613}
614
615void inline_speed
616fd_event (EV_P_ int fd, int revents) 940fd_event_nocheck (EV_P_ int fd, int revents)
617{ 941{
618 ANFD *anfd = anfds + fd; 942 ANFD *anfd = anfds + fd;
619 ev_io *w; 943 ev_io *w;
620 944
621 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 945 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
625 if (ev) 949 if (ev)
626 ev_feed_event (EV_A_ (W)w, ev); 950 ev_feed_event (EV_A_ (W)w, ev);
627 } 951 }
628} 952}
629 953
954/* do not submit kernel events for fds that have reify set */
955/* because that means they changed while we were polling for new events */
956inline_speed void
957fd_event (EV_P_ int fd, int revents)
958{
959 ANFD *anfd = anfds + fd;
960
961 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents);
963}
964
630void 965void
631ev_feed_fd_event (EV_P_ int fd, int revents) 966ev_feed_fd_event (EV_P_ int fd, int revents)
632{ 967{
633 if (fd >= 0 && fd < anfdmax) 968 if (fd >= 0 && fd < anfdmax)
634 fd_event (EV_A_ fd, revents); 969 fd_event_nocheck (EV_A_ fd, revents);
635} 970}
636 971
637void inline_size 972/* make sure the external fd watch events are in-sync */
973/* with the kernel/libev internal state */
974inline_size void
638fd_reify (EV_P) 975fd_reify (EV_P)
639{ 976{
640 int i; 977 int i;
978
979#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
980 for (i = 0; i < fdchangecnt; ++i)
981 {
982 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd;
984
985 if (anfd->reify & EV__IOFDSET)
986 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988
989 if (handle != anfd->handle)
990 {
991 unsigned long arg;
992
993 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
994
995 /* handle changed, but fd didn't - we need to do it in two steps */
996 backend_modify (EV_A_ fd, anfd->events, 0);
997 anfd->events = 0;
998 anfd->handle = handle;
999 }
1000 }
1001 }
1002#endif
641 1003
642 for (i = 0; i < fdchangecnt; ++i) 1004 for (i = 0; i < fdchangecnt; ++i)
643 { 1005 {
644 int fd = fdchanges [i]; 1006 int fd = fdchanges [i];
645 ANFD *anfd = anfds + fd; 1007 ANFD *anfd = anfds + fd;
646 ev_io *w; 1008 ev_io *w;
647 1009
648 unsigned char events = 0; 1010 unsigned char o_events = anfd->events;
1011 unsigned char o_reify = anfd->reify;
649 1012
650 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1013 anfd->reify = 0;
651 events |= (unsigned char)w->events;
652 1014
653#if EV_SELECT_IS_WINSOCKET 1015 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
654 if (events)
655 { 1016 {
656 unsigned long argp; 1017 anfd->events = 0;
657 #ifdef EV_FD_TO_WIN32_HANDLE 1018
658 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1019 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
659 #else 1020 anfd->events |= (unsigned char)w->events;
660 anfd->handle = _get_osfhandle (fd); 1021
661 #endif 1022 if (o_events != anfd->events)
662 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1023 o_reify = EV__IOFDSET; /* actually |= */
663 } 1024 }
664#endif
665 1025
666 { 1026 if (o_reify & EV__IOFDSET)
667 unsigned char o_events = anfd->events;
668 unsigned char o_reify = anfd->reify;
669
670 anfd->reify = 0;
671 anfd->events = events;
672
673 if (o_events != events || o_reify & EV_IOFDSET)
674 backend_modify (EV_A_ fd, o_events, events); 1027 backend_modify (EV_A_ fd, o_events, anfd->events);
675 }
676 } 1028 }
677 1029
678 fdchangecnt = 0; 1030 fdchangecnt = 0;
679} 1031}
680 1032
681void inline_size 1033/* something about the given fd changed */
1034inline_size void
682fd_change (EV_P_ int fd, int flags) 1035fd_change (EV_P_ int fd, int flags)
683{ 1036{
684 unsigned char reify = anfds [fd].reify; 1037 unsigned char reify = anfds [fd].reify;
685 anfds [fd].reify |= flags; 1038 anfds [fd].reify |= flags;
686 1039
… …
690 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1043 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
691 fdchanges [fdchangecnt - 1] = fd; 1044 fdchanges [fdchangecnt - 1] = fd;
692 } 1045 }
693} 1046}
694 1047
695void inline_speed 1048/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1049inline_speed void
696fd_kill (EV_P_ int fd) 1050fd_kill (EV_P_ int fd)
697{ 1051{
698 ev_io *w; 1052 ev_io *w;
699 1053
700 while ((w = (ev_io *)anfds [fd].head)) 1054 while ((w = (ev_io *)anfds [fd].head))
… …
702 ev_io_stop (EV_A_ w); 1056 ev_io_stop (EV_A_ w);
703 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1057 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
704 } 1058 }
705} 1059}
706 1060
707int inline_size 1061/* check whether the given fd is actually valid, for error recovery */
1062inline_size int
708fd_valid (int fd) 1063fd_valid (int fd)
709{ 1064{
710#ifdef _WIN32 1065#ifdef _WIN32
711 return _get_osfhandle (fd) != -1; 1066 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
712#else 1067#else
713 return fcntl (fd, F_GETFD) != -1; 1068 return fcntl (fd, F_GETFD) != -1;
714#endif 1069#endif
715} 1070}
716 1071
… …
720{ 1075{
721 int fd; 1076 int fd;
722 1077
723 for (fd = 0; fd < anfdmax; ++fd) 1078 for (fd = 0; fd < anfdmax; ++fd)
724 if (anfds [fd].events) 1079 if (anfds [fd].events)
725 if (!fd_valid (fd) == -1 && errno == EBADF) 1080 if (!fd_valid (fd) && errno == EBADF)
726 fd_kill (EV_A_ fd); 1081 fd_kill (EV_A_ fd);
727} 1082}
728 1083
729/* called on ENOMEM in select/poll to kill some fds and retry */ 1084/* called on ENOMEM in select/poll to kill some fds and retry */
730static void noinline 1085static void noinline
… …
734 1089
735 for (fd = anfdmax; fd--; ) 1090 for (fd = anfdmax; fd--; )
736 if (anfds [fd].events) 1091 if (anfds [fd].events)
737 { 1092 {
738 fd_kill (EV_A_ fd); 1093 fd_kill (EV_A_ fd);
739 return; 1094 break;
740 } 1095 }
741} 1096}
742 1097
743/* usually called after fork if backend needs to re-arm all fds from scratch */ 1098/* usually called after fork if backend needs to re-arm all fds from scratch */
744static void noinline 1099static void noinline
… …
748 1103
749 for (fd = 0; fd < anfdmax; ++fd) 1104 for (fd = 0; fd < anfdmax; ++fd)
750 if (anfds [fd].events) 1105 if (anfds [fd].events)
751 { 1106 {
752 anfds [fd].events = 0; 1107 anfds [fd].events = 0;
1108 anfds [fd].emask = 0;
753 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1109 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
754 } 1110 }
755} 1111}
756 1112
757/*****************************************************************************/ 1113/* used to prepare libev internal fd's */
758 1114/* this is not fork-safe */
759/* towards the root */ 1115inline_speed void
760void inline_speed
761upheap (WT *heap, int k)
762{
763 WT w = heap [k];
764
765 while (k)
766 {
767 int p = (k - 1) >> 1;
768
769 if (heap [p]->at <= w->at)
770 break;
771
772 heap [k] = heap [p];
773 ((W)heap [k])->active = k + 1;
774 k = p;
775 }
776
777 heap [k] = w;
778 ((W)heap [k])->active = k + 1;
779}
780
781/* away from the root */
782void inline_speed
783downheap (WT *heap, int N, int k)
784{
785 WT w = heap [k];
786
787 for (;;)
788 {
789 int c = (k << 1) + 1;
790
791 if (c >= N)
792 break;
793
794 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
795 ? 1 : 0;
796
797 if (w->at <= heap [c]->at)
798 break;
799
800 heap [k] = heap [c];
801 ((W)heap [k])->active = k + 1;
802
803 k = c;
804 }
805
806 heap [k] = w;
807 ((W)heap [k])->active = k + 1;
808}
809
810void inline_size
811adjustheap (WT *heap, int N, int k)
812{
813 upheap (heap, k);
814 downheap (heap, N, k);
815}
816
817/*****************************************************************************/
818
819typedef struct
820{
821 WL head;
822 EV_ATOMIC_T gotsig;
823} ANSIG;
824
825static ANSIG *signals;
826static int signalmax;
827
828static EV_ATOMIC_T gotsig;
829
830void inline_size
831signals_init (ANSIG *base, int count)
832{
833 while (count--)
834 {
835 base->head = 0;
836 base->gotsig = 0;
837
838 ++base;
839 }
840}
841
842/*****************************************************************************/
843
844void inline_speed
845fd_intern (int fd) 1116fd_intern (int fd)
846{ 1117{
847#ifdef _WIN32 1118#ifdef _WIN32
848 int arg = 1; 1119 unsigned long arg = 1;
849 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1120 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
850#else 1121#else
851 fcntl (fd, F_SETFD, FD_CLOEXEC); 1122 fcntl (fd, F_SETFD, FD_CLOEXEC);
852 fcntl (fd, F_SETFL, O_NONBLOCK); 1123 fcntl (fd, F_SETFL, O_NONBLOCK);
853#endif 1124#endif
854} 1125}
855 1126
1127/*****************************************************************************/
1128
1129/*
1130 * the heap functions want a real array index. array index 0 is guaranteed to not
1131 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1132 * the branching factor of the d-tree.
1133 */
1134
1135/*
1136 * at the moment we allow libev the luxury of two heaps,
1137 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1138 * which is more cache-efficient.
1139 * the difference is about 5% with 50000+ watchers.
1140 */
1141#if EV_USE_4HEAP
1142
1143#define DHEAP 4
1144#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1145#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1146#define UPHEAP_DONE(p,k) ((p) == (k))
1147
1148/* away from the root */
1149inline_speed void
1150downheap (ANHE *heap, int N, int k)
1151{
1152 ANHE he = heap [k];
1153 ANHE *E = heap + N + HEAP0;
1154
1155 for (;;)
1156 {
1157 ev_tstamp minat;
1158 ANHE *minpos;
1159 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1160
1161 /* find minimum child */
1162 if (expect_true (pos + DHEAP - 1 < E))
1163 {
1164 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1165 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1166 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1167 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1168 }
1169 else if (pos < E)
1170 {
1171 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1172 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1173 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1174 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1175 }
1176 else
1177 break;
1178
1179 if (ANHE_at (he) <= minat)
1180 break;
1181
1182 heap [k] = *minpos;
1183 ev_active (ANHE_w (*minpos)) = k;
1184
1185 k = minpos - heap;
1186 }
1187
1188 heap [k] = he;
1189 ev_active (ANHE_w (he)) = k;
1190}
1191
1192#else /* 4HEAP */
1193
1194#define HEAP0 1
1195#define HPARENT(k) ((k) >> 1)
1196#define UPHEAP_DONE(p,k) (!(p))
1197
1198/* away from the root */
1199inline_speed void
1200downheap (ANHE *heap, int N, int k)
1201{
1202 ANHE he = heap [k];
1203
1204 for (;;)
1205 {
1206 int c = k << 1;
1207
1208 if (c >= N + HEAP0)
1209 break;
1210
1211 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1212 ? 1 : 0;
1213
1214 if (ANHE_at (he) <= ANHE_at (heap [c]))
1215 break;
1216
1217 heap [k] = heap [c];
1218 ev_active (ANHE_w (heap [k])) = k;
1219
1220 k = c;
1221 }
1222
1223 heap [k] = he;
1224 ev_active (ANHE_w (he)) = k;
1225}
1226#endif
1227
1228/* towards the root */
1229inline_speed void
1230upheap (ANHE *heap, int k)
1231{
1232 ANHE he = heap [k];
1233
1234 for (;;)
1235 {
1236 int p = HPARENT (k);
1237
1238 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1239 break;
1240
1241 heap [k] = heap [p];
1242 ev_active (ANHE_w (heap [k])) = k;
1243 k = p;
1244 }
1245
1246 heap [k] = he;
1247 ev_active (ANHE_w (he)) = k;
1248}
1249
1250/* move an element suitably so it is in a correct place */
1251inline_size void
1252adjustheap (ANHE *heap, int N, int k)
1253{
1254 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1255 upheap (heap, k);
1256 else
1257 downheap (heap, N, k);
1258}
1259
1260/* rebuild the heap: this function is used only once and executed rarely */
1261inline_size void
1262reheap (ANHE *heap, int N)
1263{
1264 int i;
1265
1266 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1267 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1268 for (i = 0; i < N; ++i)
1269 upheap (heap, i + HEAP0);
1270}
1271
1272/*****************************************************************************/
1273
1274/* associate signal watchers to a signal signal */
1275typedef struct
1276{
1277 EV_ATOMIC_T pending;
1278#if EV_MULTIPLICITY
1279 EV_P;
1280#endif
1281 WL head;
1282} ANSIG;
1283
1284static ANSIG signals [EV_NSIG - 1];
1285
1286/*****************************************************************************/
1287
1288#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1289
856static void noinline 1290static void noinline
857evpipe_init (EV_P) 1291evpipe_init (EV_P)
858{ 1292{
859 if (!ev_is_active (&pipeev)) 1293 if (!ev_is_active (&pipe_w))
860 { 1294 {
861#if EV_USE_EVENTFD 1295# if EV_USE_EVENTFD
1296 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1297 if (evfd < 0 && errno == EINVAL)
862 if ((evfd = eventfd (0, 0)) >= 0) 1298 evfd = eventfd (0, 0);
1299
1300 if (evfd >= 0)
863 { 1301 {
864 evpipe [0] = -1; 1302 evpipe [0] = -1;
865 fd_intern (evfd); 1303 fd_intern (evfd); /* doing it twice doesn't hurt */
866 ev_io_set (&pipeev, evfd, EV_READ); 1304 ev_io_set (&pipe_w, evfd, EV_READ);
867 } 1305 }
868 else 1306 else
869#endif 1307# endif
870 { 1308 {
871 while (pipe (evpipe)) 1309 while (pipe (evpipe))
872 syserr ("(libev) error creating signal/async pipe"); 1310 ev_syserr ("(libev) error creating signal/async pipe");
873 1311
874 fd_intern (evpipe [0]); 1312 fd_intern (evpipe [0]);
875 fd_intern (evpipe [1]); 1313 fd_intern (evpipe [1]);
876 ev_io_set (&pipeev, evpipe [0], EV_READ); 1314 ev_io_set (&pipe_w, evpipe [0], EV_READ);
877 } 1315 }
878 1316
879 ev_io_start (EV_A_ &pipeev); 1317 ev_io_start (EV_A_ &pipe_w);
880 ev_unref (EV_A); /* watcher should not keep loop alive */ 1318 ev_unref (EV_A); /* watcher should not keep loop alive */
881 } 1319 }
882} 1320}
883 1321
884void inline_size 1322inline_size void
885evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1323evpipe_write (EV_P_ EV_ATOMIC_T *flag)
886{ 1324{
887 if (!*flag) 1325 if (!*flag)
888 { 1326 {
889 int old_errno = errno; /* save errno because write might clobber it */ 1327 int old_errno = errno; /* save errno because write might clobber it */
1328 char dummy;
890 1329
891 *flag = 1; 1330 *flag = 1;
892 1331
893#if EV_USE_EVENTFD 1332#if EV_USE_EVENTFD
894 if (evfd >= 0) 1333 if (evfd >= 0)
… …
896 uint64_t counter = 1; 1335 uint64_t counter = 1;
897 write (evfd, &counter, sizeof (uint64_t)); 1336 write (evfd, &counter, sizeof (uint64_t));
898 } 1337 }
899 else 1338 else
900#endif 1339#endif
1340 /* win32 people keep sending patches that change this write() to send() */
1341 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1342 /* so when you think this write should be a send instead, please find out */
1343 /* where your send() is from - it's definitely not the microsoft send, and */
1344 /* tell me. thank you. */
901 write (evpipe [1], &old_errno, 1); 1345 write (evpipe [1], &dummy, 1);
902 1346
903 errno = old_errno; 1347 errno = old_errno;
904 } 1348 }
905} 1349}
906 1350
1351/* called whenever the libev signal pipe */
1352/* got some events (signal, async) */
907static void 1353static void
908pipecb (EV_P_ ev_io *iow, int revents) 1354pipecb (EV_P_ ev_io *iow, int revents)
909{ 1355{
1356 int i;
1357
910#if EV_USE_EVENTFD 1358#if EV_USE_EVENTFD
911 if (evfd >= 0) 1359 if (evfd >= 0)
912 { 1360 {
913 uint64_t counter = 1; 1361 uint64_t counter;
914 read (evfd, &counter, sizeof (uint64_t)); 1362 read (evfd, &counter, sizeof (uint64_t));
915 } 1363 }
916 else 1364 else
917#endif 1365#endif
918 { 1366 {
919 char dummy; 1367 char dummy;
1368 /* see discussion in evpipe_write when you think this read should be recv in win32 */
920 read (evpipe [0], &dummy, 1); 1369 read (evpipe [0], &dummy, 1);
921 } 1370 }
922 1371
923 if (gotsig && ev_is_default_loop (EV_A)) 1372#if EV_SIGNAL_ENABLE
1373 if (sig_pending)
924 { 1374 {
925 int signum; 1375 sig_pending = 0;
926 gotsig = 0;
927 1376
928 for (signum = signalmax; signum--; ) 1377 for (i = EV_NSIG - 1; i--; )
929 if (signals [signum].gotsig) 1378 if (expect_false (signals [i].pending))
930 ev_feed_signal_event (EV_A_ signum + 1); 1379 ev_feed_signal_event (EV_A_ i + 1);
931 } 1380 }
1381#endif
932 1382
933#if EV_ASYNC_ENABLE 1383#if EV_ASYNC_ENABLE
934 if (gotasync) 1384 if (async_pending)
935 { 1385 {
936 int i; 1386 async_pending = 0;
937 gotasync = 0;
938 1387
939 for (i = asynccnt; i--; ) 1388 for (i = asynccnt; i--; )
940 if (asyncs [i]->sent) 1389 if (asyncs [i]->sent)
941 { 1390 {
942 asyncs [i]->sent = 0; 1391 asyncs [i]->sent = 0;
… …
946#endif 1395#endif
947} 1396}
948 1397
949/*****************************************************************************/ 1398/*****************************************************************************/
950 1399
1400void
1401ev_feed_signal (int signum)
1402{
1403#if EV_MULTIPLICITY
1404 EV_P = signals [signum - 1].loop;
1405
1406 if (!EV_A)
1407 return;
1408#endif
1409
1410 signals [signum - 1].pending = 1;
1411 evpipe_write (EV_A_ &sig_pending);
1412}
1413
951static void 1414static void
952ev_sighandler (int signum) 1415ev_sighandler (int signum)
953{ 1416{
954#if EV_MULTIPLICITY
955 struct ev_loop *loop = &default_loop_struct;
956#endif
957
958#if _WIN32 1417#ifdef _WIN32
959 signal (signum, ev_sighandler); 1418 signal (signum, ev_sighandler);
960#endif 1419#endif
961 1420
962 signals [signum - 1].gotsig = 1; 1421 ev_feed_signal (signum);
963 evpipe_write (EV_A_ &gotsig);
964} 1422}
965 1423
966void noinline 1424void noinline
967ev_feed_signal_event (EV_P_ int signum) 1425ev_feed_signal_event (EV_P_ int signum)
968{ 1426{
969 WL w; 1427 WL w;
970 1428
1429 if (expect_false (signum <= 0 || signum > EV_NSIG))
1430 return;
1431
1432 --signum;
1433
971#if EV_MULTIPLICITY 1434#if EV_MULTIPLICITY
972 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1435 /* it is permissible to try to feed a signal to the wrong loop */
973#endif 1436 /* or, likely more useful, feeding a signal nobody is waiting for */
974 1437
975 --signum; 1438 if (expect_false (signals [signum].loop != EV_A))
976
977 if (signum < 0 || signum >= signalmax)
978 return; 1439 return;
1440#endif
979 1441
980 signals [signum].gotsig = 0; 1442 signals [signum].pending = 0;
981 1443
982 for (w = signals [signum].head; w; w = w->next) 1444 for (w = signals [signum].head; w; w = w->next)
983 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1445 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
984} 1446}
985 1447
1448#if EV_USE_SIGNALFD
1449static void
1450sigfdcb (EV_P_ ev_io *iow, int revents)
1451{
1452 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1453
1454 for (;;)
1455 {
1456 ssize_t res = read (sigfd, si, sizeof (si));
1457
1458 /* not ISO-C, as res might be -1, but works with SuS */
1459 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1460 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1461
1462 if (res < (ssize_t)sizeof (si))
1463 break;
1464 }
1465}
1466#endif
1467
1468#endif
1469
986/*****************************************************************************/ 1470/*****************************************************************************/
987 1471
1472#if EV_CHILD_ENABLE
988static WL childs [EV_PID_HASHSIZE]; 1473static WL childs [EV_PID_HASHSIZE];
989
990#ifndef _WIN32
991 1474
992static ev_signal childev; 1475static ev_signal childev;
993 1476
994#ifndef WIFCONTINUED 1477#ifndef WIFCONTINUED
995# define WIFCONTINUED(status) 0 1478# define WIFCONTINUED(status) 0
996#endif 1479#endif
997 1480
998void inline_speed 1481/* handle a single child status event */
1482inline_speed void
999child_reap (EV_P_ int chain, int pid, int status) 1483child_reap (EV_P_ int chain, int pid, int status)
1000{ 1484{
1001 ev_child *w; 1485 ev_child *w;
1002 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1486 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1003 1487
1004 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1488 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1005 { 1489 {
1006 if ((w->pid == pid || !w->pid) 1490 if ((w->pid == pid || !w->pid)
1007 && (!traced || (w->flags & 1))) 1491 && (!traced || (w->flags & 1)))
1008 { 1492 {
1009 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1493 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1016 1500
1017#ifndef WCONTINUED 1501#ifndef WCONTINUED
1018# define WCONTINUED 0 1502# define WCONTINUED 0
1019#endif 1503#endif
1020 1504
1505/* called on sigchld etc., calls waitpid */
1021static void 1506static void
1022childcb (EV_P_ ev_signal *sw, int revents) 1507childcb (EV_P_ ev_signal *sw, int revents)
1023{ 1508{
1024 int pid, status; 1509 int pid, status;
1025 1510
… …
1033 /* make sure we are called again until all children have been reaped */ 1518 /* make sure we are called again until all children have been reaped */
1034 /* we need to do it this way so that the callback gets called before we continue */ 1519 /* we need to do it this way so that the callback gets called before we continue */
1035 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1520 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1036 1521
1037 child_reap (EV_A_ pid, pid, status); 1522 child_reap (EV_A_ pid, pid, status);
1038 if (EV_PID_HASHSIZE > 1) 1523 if ((EV_PID_HASHSIZE) > 1)
1039 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1524 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1040} 1525}
1041 1526
1042#endif 1527#endif
1043 1528
1044/*****************************************************************************/ 1529/*****************************************************************************/
1045 1530
1531#if EV_USE_IOCP
1532# include "ev_iocp.c"
1533#endif
1046#if EV_USE_PORT 1534#if EV_USE_PORT
1047# include "ev_port.c" 1535# include "ev_port.c"
1048#endif 1536#endif
1049#if EV_USE_KQUEUE 1537#if EV_USE_KQUEUE
1050# include "ev_kqueue.c" 1538# include "ev_kqueue.c"
… …
1106 /* kqueue is borked on everything but netbsd apparently */ 1594 /* kqueue is borked on everything but netbsd apparently */
1107 /* it usually doesn't work correctly on anything but sockets and pipes */ 1595 /* it usually doesn't work correctly on anything but sockets and pipes */
1108 flags &= ~EVBACKEND_KQUEUE; 1596 flags &= ~EVBACKEND_KQUEUE;
1109#endif 1597#endif
1110#ifdef __APPLE__ 1598#ifdef __APPLE__
1111 // flags &= ~EVBACKEND_KQUEUE; for documentation 1599 /* only select works correctly on that "unix-certified" platform */
1112 flags &= ~EVBACKEND_POLL; 1600 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1601 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1602#endif
1603#ifdef __FreeBSD__
1604 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1113#endif 1605#endif
1114 1606
1115 return flags; 1607 return flags;
1116} 1608}
1117 1609
… …
1119ev_embeddable_backends (void) 1611ev_embeddable_backends (void)
1120{ 1612{
1121 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1122 1614
1123 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1615 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1124 /* please fix it and tell me how to detect the fix */ 1616 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1125 flags &= ~EVBACKEND_EPOLL; 1617 flags &= ~EVBACKEND_EPOLL;
1126 1618
1127 return flags; 1619 return flags;
1128} 1620}
1129 1621
1130unsigned int 1622unsigned int
1131ev_backend (EV_P) 1623ev_backend (EV_P)
1132{ 1624{
1133 return backend; 1625 return backend;
1134} 1626}
1135 1627
1628#if EV_FEATURE_API
1136unsigned int 1629unsigned int
1137ev_loop_count (EV_P) 1630ev_iteration (EV_P)
1138{ 1631{
1139 return loop_count; 1632 return loop_count;
1140} 1633}
1141 1634
1635unsigned int
1636ev_depth (EV_P)
1637{
1638 return loop_depth;
1639}
1640
1142void 1641void
1143ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1642ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1144{ 1643{
1145 io_blocktime = interval; 1644 io_blocktime = interval;
1146} 1645}
… …
1149ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1648ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1150{ 1649{
1151 timeout_blocktime = interval; 1650 timeout_blocktime = interval;
1152} 1651}
1153 1652
1653void
1654ev_set_userdata (EV_P_ void *data)
1655{
1656 userdata = data;
1657}
1658
1659void *
1660ev_userdata (EV_P)
1661{
1662 return userdata;
1663}
1664
1665void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1666{
1667 invoke_cb = invoke_pending_cb;
1668}
1669
1670void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1671{
1672 release_cb = release;
1673 acquire_cb = acquire;
1674}
1675#endif
1676
1677/* initialise a loop structure, must be zero-initialised */
1154static void noinline 1678static void noinline
1155loop_init (EV_P_ unsigned int flags) 1679loop_init (EV_P_ unsigned int flags)
1156{ 1680{
1157 if (!backend) 1681 if (!backend)
1158 { 1682 {
1683 origflags = flags;
1684
1685#if EV_USE_REALTIME
1686 if (!have_realtime)
1687 {
1688 struct timespec ts;
1689
1690 if (!clock_gettime (CLOCK_REALTIME, &ts))
1691 have_realtime = 1;
1692 }
1693#endif
1694
1159#if EV_USE_MONOTONIC 1695#if EV_USE_MONOTONIC
1696 if (!have_monotonic)
1160 { 1697 {
1161 struct timespec ts; 1698 struct timespec ts;
1699
1162 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1700 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1163 have_monotonic = 1; 1701 have_monotonic = 1;
1164 } 1702 }
1165#endif 1703#endif
1704
1705 /* pid check not overridable via env */
1706#ifndef _WIN32
1707 if (flags & EVFLAG_FORKCHECK)
1708 curpid = getpid ();
1709#endif
1710
1711 if (!(flags & EVFLAG_NOENV)
1712 && !enable_secure ()
1713 && getenv ("LIBEV_FLAGS"))
1714 flags = atoi (getenv ("LIBEV_FLAGS"));
1166 1715
1167 ev_rt_now = ev_time (); 1716 ev_rt_now = ev_time ();
1168 mn_now = get_clock (); 1717 mn_now = get_clock ();
1169 now_floor = mn_now; 1718 now_floor = mn_now;
1170 rtmn_diff = ev_rt_now - mn_now; 1719 rtmn_diff = ev_rt_now - mn_now;
1720#if EV_FEATURE_API
1721 invoke_cb = ev_invoke_pending;
1722#endif
1171 1723
1172 io_blocktime = 0.; 1724 io_blocktime = 0.;
1173 timeout_blocktime = 0.; 1725 timeout_blocktime = 0.;
1174 backend = 0; 1726 backend = 0;
1175 backend_fd = -1; 1727 backend_fd = -1;
1176 gotasync = 0; 1728 sig_pending = 0;
1729#if EV_ASYNC_ENABLE
1730 async_pending = 0;
1731#endif
1177#if EV_USE_INOTIFY 1732#if EV_USE_INOTIFY
1178 fs_fd = -2; 1733 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1179#endif 1734#endif
1180 1735#if EV_USE_SIGNALFD
1181 /* pid check not overridable via env */ 1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1182#ifndef _WIN32
1183 if (flags & EVFLAG_FORKCHECK)
1184 curpid = getpid ();
1185#endif 1737#endif
1186 1738
1187 if (!(flags & EVFLAG_NOENV) 1739 if (!(flags & EVBACKEND_MASK))
1188 && !enable_secure ()
1189 && getenv ("LIBEV_FLAGS"))
1190 flags = atoi (getenv ("LIBEV_FLAGS"));
1191
1192 if (!(flags & 0x0000ffffU))
1193 flags |= ev_recommended_backends (); 1740 flags |= ev_recommended_backends ();
1194 1741
1742#if EV_USE_IOCP
1743 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1744#endif
1195#if EV_USE_PORT 1745#if EV_USE_PORT
1196 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1746 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1197#endif 1747#endif
1198#if EV_USE_KQUEUE 1748#if EV_USE_KQUEUE
1199 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1749 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1206#endif 1756#endif
1207#if EV_USE_SELECT 1757#if EV_USE_SELECT
1208 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1758 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1209#endif 1759#endif
1210 1760
1761 ev_prepare_init (&pending_w, pendingcb);
1762
1763#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1211 ev_init (&pipeev, pipecb); 1764 ev_init (&pipe_w, pipecb);
1212 ev_set_priority (&pipeev, EV_MAXPRI); 1765 ev_set_priority (&pipe_w, EV_MAXPRI);
1766#endif
1213 } 1767 }
1214} 1768}
1215 1769
1216static void noinline 1770/* free up a loop structure */
1771void
1217loop_destroy (EV_P) 1772ev_loop_destroy (EV_P)
1218{ 1773{
1219 int i; 1774 int i;
1220 1775
1776#if EV_MULTIPLICITY
1777 /* mimic free (0) */
1778 if (!EV_A)
1779 return;
1780#endif
1781
1782#if EV_CLEANUP_ENABLE
1783 /* queue cleanup watchers (and execute them) */
1784 if (expect_false (cleanupcnt))
1785 {
1786 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1787 EV_INVOKE_PENDING;
1788 }
1789#endif
1790
1791#if EV_CHILD_ENABLE
1792 if (ev_is_active (&childev))
1793 {
1794 ev_ref (EV_A); /* child watcher */
1795 ev_signal_stop (EV_A_ &childev);
1796 }
1797#endif
1798
1221 if (ev_is_active (&pipeev)) 1799 if (ev_is_active (&pipe_w))
1222 { 1800 {
1223 ev_ref (EV_A); /* signal watcher */ 1801 /*ev_ref (EV_A);*/
1224 ev_io_stop (EV_A_ &pipeev); 1802 /*ev_io_stop (EV_A_ &pipe_w);*/
1225 1803
1226#if EV_USE_EVENTFD 1804#if EV_USE_EVENTFD
1227 if (evfd >= 0) 1805 if (evfd >= 0)
1228 close (evfd); 1806 close (evfd);
1229#endif 1807#endif
1230 1808
1231 if (evpipe [0] >= 0) 1809 if (evpipe [0] >= 0)
1232 { 1810 {
1233 close (evpipe [0]); 1811 EV_WIN32_CLOSE_FD (evpipe [0]);
1234 close (evpipe [1]); 1812 EV_WIN32_CLOSE_FD (evpipe [1]);
1235 } 1813 }
1236 } 1814 }
1815
1816#if EV_USE_SIGNALFD
1817 if (ev_is_active (&sigfd_w))
1818 close (sigfd);
1819#endif
1237 1820
1238#if EV_USE_INOTIFY 1821#if EV_USE_INOTIFY
1239 if (fs_fd >= 0) 1822 if (fs_fd >= 0)
1240 close (fs_fd); 1823 close (fs_fd);
1241#endif 1824#endif
1242 1825
1243 if (backend_fd >= 0) 1826 if (backend_fd >= 0)
1244 close (backend_fd); 1827 close (backend_fd);
1245 1828
1829#if EV_USE_IOCP
1830 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1831#endif
1246#if EV_USE_PORT 1832#if EV_USE_PORT
1247 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1833 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1248#endif 1834#endif
1249#if EV_USE_KQUEUE 1835#if EV_USE_KQUEUE
1250 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1836 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1265#if EV_IDLE_ENABLE 1851#if EV_IDLE_ENABLE
1266 array_free (idle, [i]); 1852 array_free (idle, [i]);
1267#endif 1853#endif
1268 } 1854 }
1269 1855
1270 ev_free (anfds); anfdmax = 0; 1856 ev_free (anfds); anfds = 0; anfdmax = 0;
1271 1857
1272 /* have to use the microsoft-never-gets-it-right macro */ 1858 /* have to use the microsoft-never-gets-it-right macro */
1859 array_free (rfeed, EMPTY);
1273 array_free (fdchange, EMPTY); 1860 array_free (fdchange, EMPTY);
1274 array_free (timer, EMPTY); 1861 array_free (timer, EMPTY);
1275#if EV_PERIODIC_ENABLE 1862#if EV_PERIODIC_ENABLE
1276 array_free (periodic, EMPTY); 1863 array_free (periodic, EMPTY);
1277#endif 1864#endif
1278#if EV_FORK_ENABLE 1865#if EV_FORK_ENABLE
1279 array_free (fork, EMPTY); 1866 array_free (fork, EMPTY);
1280#endif 1867#endif
1868#if EV_CLEANUP_ENABLE
1869 array_free (cleanup, EMPTY);
1870#endif
1281 array_free (prepare, EMPTY); 1871 array_free (prepare, EMPTY);
1282 array_free (check, EMPTY); 1872 array_free (check, EMPTY);
1283#if EV_ASYNC_ENABLE 1873#if EV_ASYNC_ENABLE
1284 array_free (async, EMPTY); 1874 array_free (async, EMPTY);
1285#endif 1875#endif
1286 1876
1287 backend = 0; 1877 backend = 0;
1878
1879#if EV_MULTIPLICITY
1880 if (ev_is_default_loop (EV_A))
1881#endif
1882 ev_default_loop_ptr = 0;
1883#if EV_MULTIPLICITY
1884 else
1885 ev_free (EV_A);
1886#endif
1288} 1887}
1289 1888
1290#if EV_USE_INOTIFY 1889#if EV_USE_INOTIFY
1291void inline_size infy_fork (EV_P); 1890inline_size void infy_fork (EV_P);
1292#endif 1891#endif
1293 1892
1294void inline_size 1893inline_size void
1295loop_fork (EV_P) 1894loop_fork (EV_P)
1296{ 1895{
1297#if EV_USE_PORT 1896#if EV_USE_PORT
1298 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1897 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1299#endif 1898#endif
… …
1305#endif 1904#endif
1306#if EV_USE_INOTIFY 1905#if EV_USE_INOTIFY
1307 infy_fork (EV_A); 1906 infy_fork (EV_A);
1308#endif 1907#endif
1309 1908
1310 if (ev_is_active (&pipeev)) 1909 if (ev_is_active (&pipe_w))
1311 { 1910 {
1312 /* this "locks" the handlers against writing to the pipe */ 1911 /* this "locks" the handlers against writing to the pipe */
1313 /* while we modify the fd vars */ 1912 /* while we modify the fd vars */
1314 gotsig = 1; 1913 sig_pending = 1;
1315#if EV_ASYNC_ENABLE 1914#if EV_ASYNC_ENABLE
1316 gotasync = 1; 1915 async_pending = 1;
1317#endif 1916#endif
1318 1917
1319 ev_ref (EV_A); 1918 ev_ref (EV_A);
1320 ev_io_stop (EV_A_ &pipeev); 1919 ev_io_stop (EV_A_ &pipe_w);
1321 1920
1322#if EV_USE_EVENTFD 1921#if EV_USE_EVENTFD
1323 if (evfd >= 0) 1922 if (evfd >= 0)
1324 close (evfd); 1923 close (evfd);
1325#endif 1924#endif
1326 1925
1327 if (evpipe [0] >= 0) 1926 if (evpipe [0] >= 0)
1328 { 1927 {
1329 close (evpipe [0]); 1928 EV_WIN32_CLOSE_FD (evpipe [0]);
1330 close (evpipe [1]); 1929 EV_WIN32_CLOSE_FD (evpipe [1]);
1331 } 1930 }
1332 1931
1932#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1333 evpipe_init (EV_A); 1933 evpipe_init (EV_A);
1334 /* now iterate over everything, in case we missed something */ 1934 /* now iterate over everything, in case we missed something */
1335 pipecb (EV_A_ &pipeev, EV_READ); 1935 pipecb (EV_A_ &pipe_w, EV_READ);
1936#endif
1336 } 1937 }
1337 1938
1338 postfork = 0; 1939 postfork = 0;
1339} 1940}
1941
1942#if EV_MULTIPLICITY
1943
1944struct ev_loop *
1945ev_loop_new (unsigned int flags)
1946{
1947 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1948
1949 memset (EV_A, 0, sizeof (struct ev_loop));
1950 loop_init (EV_A_ flags);
1951
1952 if (ev_backend (EV_A))
1953 return EV_A;
1954
1955 ev_free (EV_A);
1956 return 0;
1957}
1958
1959#endif /* multiplicity */
1960
1961#if EV_VERIFY
1962static void noinline
1963verify_watcher (EV_P_ W w)
1964{
1965 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1966
1967 if (w->pending)
1968 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1969}
1970
1971static void noinline
1972verify_heap (EV_P_ ANHE *heap, int N)
1973{
1974 int i;
1975
1976 for (i = HEAP0; i < N + HEAP0; ++i)
1977 {
1978 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1979 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1980 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1981
1982 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1983 }
1984}
1985
1986static void noinline
1987array_verify (EV_P_ W *ws, int cnt)
1988{
1989 while (cnt--)
1990 {
1991 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1992 verify_watcher (EV_A_ ws [cnt]);
1993 }
1994}
1995#endif
1996
1997#if EV_FEATURE_API
1998void
1999ev_verify (EV_P)
2000{
2001#if EV_VERIFY
2002 int i;
2003 WL w;
2004
2005 assert (activecnt >= -1);
2006
2007 assert (fdchangemax >= fdchangecnt);
2008 for (i = 0; i < fdchangecnt; ++i)
2009 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2010
2011 assert (anfdmax >= 0);
2012 for (i = 0; i < anfdmax; ++i)
2013 for (w = anfds [i].head; w; w = w->next)
2014 {
2015 verify_watcher (EV_A_ (W)w);
2016 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2017 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2018 }
2019
2020 assert (timermax >= timercnt);
2021 verify_heap (EV_A_ timers, timercnt);
2022
2023#if EV_PERIODIC_ENABLE
2024 assert (periodicmax >= periodiccnt);
2025 verify_heap (EV_A_ periodics, periodiccnt);
2026#endif
2027
2028 for (i = NUMPRI; i--; )
2029 {
2030 assert (pendingmax [i] >= pendingcnt [i]);
2031#if EV_IDLE_ENABLE
2032 assert (idleall >= 0);
2033 assert (idlemax [i] >= idlecnt [i]);
2034 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2035#endif
2036 }
2037
2038#if EV_FORK_ENABLE
2039 assert (forkmax >= forkcnt);
2040 array_verify (EV_A_ (W *)forks, forkcnt);
2041#endif
2042
2043#if EV_CLEANUP_ENABLE
2044 assert (cleanupmax >= cleanupcnt);
2045 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2046#endif
2047
2048#if EV_ASYNC_ENABLE
2049 assert (asyncmax >= asynccnt);
2050 array_verify (EV_A_ (W *)asyncs, asynccnt);
2051#endif
2052
2053#if EV_PREPARE_ENABLE
2054 assert (preparemax >= preparecnt);
2055 array_verify (EV_A_ (W *)prepares, preparecnt);
2056#endif
2057
2058#if EV_CHECK_ENABLE
2059 assert (checkmax >= checkcnt);
2060 array_verify (EV_A_ (W *)checks, checkcnt);
2061#endif
2062
2063# if 0
2064#if EV_CHILD_ENABLE
2065 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2066 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2067#endif
2068# endif
2069#endif
2070}
2071#endif
1340 2072
1341#if EV_MULTIPLICITY 2073#if EV_MULTIPLICITY
1342struct ev_loop * 2074struct ev_loop *
1343ev_loop_new (unsigned int flags)
1344{
1345 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1346
1347 memset (loop, 0, sizeof (struct ev_loop));
1348
1349 loop_init (EV_A_ flags);
1350
1351 if (ev_backend (EV_A))
1352 return loop;
1353
1354 return 0;
1355}
1356
1357void
1358ev_loop_destroy (EV_P)
1359{
1360 loop_destroy (EV_A);
1361 ev_free (loop);
1362}
1363
1364void
1365ev_loop_fork (EV_P)
1366{
1367 postfork = 1; /* must be in line with ev_default_fork */
1368}
1369
1370#endif
1371
1372#if EV_MULTIPLICITY
1373struct ev_loop *
1374ev_default_loop_init (unsigned int flags)
1375#else 2075#else
1376int 2076int
2077#endif
1377ev_default_loop (unsigned int flags) 2078ev_default_loop (unsigned int flags)
1378#endif
1379{ 2079{
1380 if (!ev_default_loop_ptr) 2080 if (!ev_default_loop_ptr)
1381 { 2081 {
1382#if EV_MULTIPLICITY 2082#if EV_MULTIPLICITY
1383 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2083 EV_P = ev_default_loop_ptr = &default_loop_struct;
1384#else 2084#else
1385 ev_default_loop_ptr = 1; 2085 ev_default_loop_ptr = 1;
1386#endif 2086#endif
1387 2087
1388 loop_init (EV_A_ flags); 2088 loop_init (EV_A_ flags);
1389 2089
1390 if (ev_backend (EV_A)) 2090 if (ev_backend (EV_A))
1391 { 2091 {
1392#ifndef _WIN32 2092#if EV_CHILD_ENABLE
1393 ev_signal_init (&childev, childcb, SIGCHLD); 2093 ev_signal_init (&childev, childcb, SIGCHLD);
1394 ev_set_priority (&childev, EV_MAXPRI); 2094 ev_set_priority (&childev, EV_MAXPRI);
1395 ev_signal_start (EV_A_ &childev); 2095 ev_signal_start (EV_A_ &childev);
1396 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2096 ev_unref (EV_A); /* child watcher should not keep loop alive */
1397#endif 2097#endif
… …
1402 2102
1403 return ev_default_loop_ptr; 2103 return ev_default_loop_ptr;
1404} 2104}
1405 2105
1406void 2106void
1407ev_default_destroy (void) 2107ev_loop_fork (EV_P)
1408{ 2108{
1409#if EV_MULTIPLICITY
1410 struct ev_loop *loop = ev_default_loop_ptr;
1411#endif
1412
1413#ifndef _WIN32
1414 ev_ref (EV_A); /* child watcher */
1415 ev_signal_stop (EV_A_ &childev);
1416#endif
1417
1418 loop_destroy (EV_A);
1419}
1420
1421void
1422ev_default_fork (void)
1423{
1424#if EV_MULTIPLICITY
1425 struct ev_loop *loop = ev_default_loop_ptr;
1426#endif
1427
1428 if (backend)
1429 postfork = 1; /* must be in line with ev_loop_fork */ 2109 postfork = 1; /* must be in line with ev_default_fork */
1430} 2110}
1431 2111
1432/*****************************************************************************/ 2112/*****************************************************************************/
1433 2113
1434void 2114void
1435ev_invoke (EV_P_ void *w, int revents) 2115ev_invoke (EV_P_ void *w, int revents)
1436{ 2116{
1437 EV_CB_INVOKE ((W)w, revents); 2117 EV_CB_INVOKE ((W)w, revents);
1438} 2118}
1439 2119
1440void inline_speed 2120unsigned int
1441call_pending (EV_P) 2121ev_pending_count (EV_P)
2122{
2123 int pri;
2124 unsigned int count = 0;
2125
2126 for (pri = NUMPRI; pri--; )
2127 count += pendingcnt [pri];
2128
2129 return count;
2130}
2131
2132void noinline
2133ev_invoke_pending (EV_P)
1442{ 2134{
1443 int pri; 2135 int pri;
1444 2136
1445 for (pri = NUMPRI; pri--; ) 2137 for (pri = NUMPRI; pri--; )
1446 while (pendingcnt [pri]) 2138 while (pendingcnt [pri])
1447 { 2139 {
1448 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1449 2141
1450 if (expect_true (p->w))
1451 {
1452 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1453
1454 p->w->pending = 0; 2142 p->w->pending = 0;
1455 EV_CB_INVOKE (p->w, p->events); 2143 EV_CB_INVOKE (p->w, p->events);
1456 } 2144 EV_FREQUENT_CHECK;
1457 } 2145 }
1458} 2146}
1459 2147
1460void inline_size
1461timers_reify (EV_P)
1462{
1463 while (timercnt && ((WT)timers [0])->at <= mn_now)
1464 {
1465 ev_timer *w = (ev_timer *)timers [0];
1466
1467 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1468
1469 /* first reschedule or stop timer */
1470 if (w->repeat)
1471 {
1472 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1473
1474 ((WT)w)->at += w->repeat;
1475 if (((WT)w)->at < mn_now)
1476 ((WT)w)->at = mn_now;
1477
1478 downheap (timers, timercnt, 0);
1479 }
1480 else
1481 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1482
1483 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1484 }
1485}
1486
1487#if EV_PERIODIC_ENABLE
1488void inline_size
1489periodics_reify (EV_P)
1490{
1491 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1492 {
1493 ev_periodic *w = (ev_periodic *)periodics [0];
1494
1495 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1496
1497 /* first reschedule or stop timer */
1498 if (w->reschedule_cb)
1499 {
1500 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1501 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1502 downheap (periodics, periodiccnt, 0);
1503 }
1504 else if (w->interval)
1505 {
1506 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1507 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1508 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1509 downheap (periodics, periodiccnt, 0);
1510 }
1511 else
1512 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1513
1514 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1515 }
1516}
1517
1518static void noinline
1519periodics_reschedule (EV_P)
1520{
1521 int i;
1522
1523 /* adjust periodics after time jump */
1524 for (i = 0; i < periodiccnt; ++i)
1525 {
1526 ev_periodic *w = (ev_periodic *)periodics [i];
1527
1528 if (w->reschedule_cb)
1529 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1530 else if (w->interval)
1531 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1532 }
1533
1534 /* now rebuild the heap */
1535 for (i = periodiccnt >> 1; i--; )
1536 downheap (periodics, periodiccnt, i);
1537}
1538#endif
1539
1540#if EV_IDLE_ENABLE 2148#if EV_IDLE_ENABLE
1541void inline_size 2149/* make idle watchers pending. this handles the "call-idle */
2150/* only when higher priorities are idle" logic */
2151inline_size void
1542idle_reify (EV_P) 2152idle_reify (EV_P)
1543{ 2153{
1544 if (expect_false (idleall)) 2154 if (expect_false (idleall))
1545 { 2155 {
1546 int pri; 2156 int pri;
… …
1558 } 2168 }
1559 } 2169 }
1560} 2170}
1561#endif 2171#endif
1562 2172
1563void inline_speed 2173/* make timers pending */
2174inline_size void
2175timers_reify (EV_P)
2176{
2177 EV_FREQUENT_CHECK;
2178
2179 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2180 {
2181 do
2182 {
2183 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2184
2185 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2186
2187 /* first reschedule or stop timer */
2188 if (w->repeat)
2189 {
2190 ev_at (w) += w->repeat;
2191 if (ev_at (w) < mn_now)
2192 ev_at (w) = mn_now;
2193
2194 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2195
2196 ANHE_at_cache (timers [HEAP0]);
2197 downheap (timers, timercnt, HEAP0);
2198 }
2199 else
2200 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2201
2202 EV_FREQUENT_CHECK;
2203 feed_reverse (EV_A_ (W)w);
2204 }
2205 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2206
2207 feed_reverse_done (EV_A_ EV_TIMER);
2208 }
2209}
2210
2211#if EV_PERIODIC_ENABLE
2212
2213inline_speed void
2214periodic_recalc (EV_P_ ev_periodic *w)
2215{
2216 /* TODO: use slow but potentially more correct incremental algo, */
2217 /* also do not rely on ceil */
2218 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2219}
2220
2221/* make periodics pending */
2222inline_size void
2223periodics_reify (EV_P)
2224{
2225 EV_FREQUENT_CHECK;
2226
2227 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2228 {
2229 int feed_count = 0;
2230
2231 do
2232 {
2233 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2234
2235 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2236
2237 /* first reschedule or stop timer */
2238 if (w->reschedule_cb)
2239 {
2240 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2241
2242 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2243
2244 ANHE_at_cache (periodics [HEAP0]);
2245 downheap (periodics, periodiccnt, HEAP0);
2246 }
2247 else if (w->interval)
2248 {
2249 periodic_recalc (EV_A_ w);
2250
2251 /* if next trigger time is not sufficiently in the future, put it there */
2252 /* this might happen because of floating point inexactness */
2253 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2254 {
2255 ev_at (w) += w->interval;
2256
2257 /* if interval is unreasonably low we might still have a time in the past */
2258 /* so correct this. this will make the periodic very inexact, but the user */
2259 /* has effectively asked to get triggered more often than possible */
2260 if (ev_at (w) < ev_rt_now)
2261 ev_at (w) = ev_rt_now;
2262 }
2263
2264 ANHE_at_cache (periodics [HEAP0]);
2265 downheap (periodics, periodiccnt, HEAP0);
2266 }
2267 else
2268 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2269
2270 EV_FREQUENT_CHECK;
2271 feed_reverse (EV_A_ (W)w);
2272 }
2273 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2274
2275 feed_reverse_done (EV_A_ EV_PERIODIC);
2276 }
2277}
2278
2279/* simply recalculate all periodics */
2280/* TODO: maybe ensure that at least one event happens when jumping forward? */
2281static void noinline
2282periodics_reschedule (EV_P)
2283{
2284 int i;
2285
2286 /* adjust periodics after time jump */
2287 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2288 {
2289 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2290
2291 if (w->reschedule_cb)
2292 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2293 else if (w->interval)
2294 periodic_recalc (EV_A_ w);
2295
2296 ANHE_at_cache (periodics [i]);
2297 }
2298
2299 reheap (periodics, periodiccnt);
2300}
2301#endif
2302
2303/* adjust all timers by a given offset */
2304static void noinline
2305timers_reschedule (EV_P_ ev_tstamp adjust)
2306{
2307 int i;
2308
2309 for (i = 0; i < timercnt; ++i)
2310 {
2311 ANHE *he = timers + i + HEAP0;
2312 ANHE_w (*he)->at += adjust;
2313 ANHE_at_cache (*he);
2314 }
2315}
2316
2317/* fetch new monotonic and realtime times from the kernel */
2318/* also detect if there was a timejump, and act accordingly */
2319inline_speed void
1564time_update (EV_P_ ev_tstamp max_block) 2320time_update (EV_P_ ev_tstamp max_block)
1565{ 2321{
1566 int i;
1567
1568#if EV_USE_MONOTONIC 2322#if EV_USE_MONOTONIC
1569 if (expect_true (have_monotonic)) 2323 if (expect_true (have_monotonic))
1570 { 2324 {
2325 int i;
1571 ev_tstamp odiff = rtmn_diff; 2326 ev_tstamp odiff = rtmn_diff;
1572 2327
1573 mn_now = get_clock (); 2328 mn_now = get_clock ();
1574 2329
1575 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2330 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1593 */ 2348 */
1594 for (i = 4; --i; ) 2349 for (i = 4; --i; )
1595 { 2350 {
1596 rtmn_diff = ev_rt_now - mn_now; 2351 rtmn_diff = ev_rt_now - mn_now;
1597 2352
1598 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2353 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1599 return; /* all is well */ 2354 return; /* all is well */
1600 2355
1601 ev_rt_now = ev_time (); 2356 ev_rt_now = ev_time ();
1602 mn_now = get_clock (); 2357 mn_now = get_clock ();
1603 now_floor = mn_now; 2358 now_floor = mn_now;
1604 } 2359 }
1605 2360
2361 /* no timer adjustment, as the monotonic clock doesn't jump */
2362 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1606# if EV_PERIODIC_ENABLE 2363# if EV_PERIODIC_ENABLE
1607 periodics_reschedule (EV_A); 2364 periodics_reschedule (EV_A);
1608# endif 2365# endif
1609 /* no timer adjustment, as the monotonic clock doesn't jump */
1610 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1611 } 2366 }
1612 else 2367 else
1613#endif 2368#endif
1614 { 2369 {
1615 ev_rt_now = ev_time (); 2370 ev_rt_now = ev_time ();
1616 2371
1617 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1618 { 2373 {
2374 /* adjust timers. this is easy, as the offset is the same for all of them */
2375 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1619#if EV_PERIODIC_ENABLE 2376#if EV_PERIODIC_ENABLE
1620 periodics_reschedule (EV_A); 2377 periodics_reschedule (EV_A);
1621#endif 2378#endif
1622 /* adjust timers. this is easy, as the offset is the same for all of them */
1623 for (i = 0; i < timercnt; ++i)
1624 ((WT)timers [i])->at += ev_rt_now - mn_now;
1625 } 2379 }
1626 2380
1627 mn_now = ev_rt_now; 2381 mn_now = ev_rt_now;
1628 } 2382 }
1629} 2383}
1630 2384
1631void 2385void
1632ev_ref (EV_P)
1633{
1634 ++activecnt;
1635}
1636
1637void
1638ev_unref (EV_P)
1639{
1640 --activecnt;
1641}
1642
1643static int loop_done;
1644
1645void
1646ev_loop (EV_P_ int flags) 2386ev_run (EV_P_ int flags)
1647{ 2387{
2388#if EV_FEATURE_API
2389 ++loop_depth;
2390#endif
2391
2392 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2393
1648 loop_done = EVUNLOOP_CANCEL; 2394 loop_done = EVBREAK_CANCEL;
1649 2395
1650 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2396 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1651 2397
1652 do 2398 do
1653 { 2399 {
2400#if EV_VERIFY >= 2
2401 ev_verify (EV_A);
2402#endif
2403
1654#ifndef _WIN32 2404#ifndef _WIN32
1655 if (expect_false (curpid)) /* penalise the forking check even more */ 2405 if (expect_false (curpid)) /* penalise the forking check even more */
1656 if (expect_false (getpid () != curpid)) 2406 if (expect_false (getpid () != curpid))
1657 { 2407 {
1658 curpid = getpid (); 2408 curpid = getpid ();
… …
1664 /* we might have forked, so queue fork handlers */ 2414 /* we might have forked, so queue fork handlers */
1665 if (expect_false (postfork)) 2415 if (expect_false (postfork))
1666 if (forkcnt) 2416 if (forkcnt)
1667 { 2417 {
1668 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2418 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1669 call_pending (EV_A); 2419 EV_INVOKE_PENDING;
1670 } 2420 }
1671#endif 2421#endif
1672 2422
2423#if EV_PREPARE_ENABLE
1673 /* queue prepare watchers (and execute them) */ 2424 /* queue prepare watchers (and execute them) */
1674 if (expect_false (preparecnt)) 2425 if (expect_false (preparecnt))
1675 { 2426 {
1676 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2427 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1677 call_pending (EV_A); 2428 EV_INVOKE_PENDING;
1678 } 2429 }
2430#endif
1679 2431
1680 if (expect_false (!activecnt)) 2432 if (expect_false (loop_done))
1681 break; 2433 break;
1682 2434
1683 /* we might have forked, so reify kernel state if necessary */ 2435 /* we might have forked, so reify kernel state if necessary */
1684 if (expect_false (postfork)) 2436 if (expect_false (postfork))
1685 loop_fork (EV_A); 2437 loop_fork (EV_A);
… …
1690 /* calculate blocking time */ 2442 /* calculate blocking time */
1691 { 2443 {
1692 ev_tstamp waittime = 0.; 2444 ev_tstamp waittime = 0.;
1693 ev_tstamp sleeptime = 0.; 2445 ev_tstamp sleeptime = 0.;
1694 2446
2447 /* remember old timestamp for io_blocktime calculation */
2448 ev_tstamp prev_mn_now = mn_now;
2449
2450 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100);
2452
1695 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1696 { 2454 {
1697 /* update time to cancel out callback processing overhead */
1698 time_update (EV_A_ 1e100);
1699
1700 waittime = MAX_BLOCKTIME; 2455 waittime = MAX_BLOCKTIME;
1701 2456
1702 if (timercnt) 2457 if (timercnt)
1703 { 2458 {
1704 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1705 if (waittime > to) waittime = to; 2460 if (waittime > to) waittime = to;
1706 } 2461 }
1707 2462
1708#if EV_PERIODIC_ENABLE 2463#if EV_PERIODIC_ENABLE
1709 if (periodiccnt) 2464 if (periodiccnt)
1710 { 2465 {
1711 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2466 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1712 if (waittime > to) waittime = to; 2467 if (waittime > to) waittime = to;
1713 } 2468 }
1714#endif 2469#endif
1715 2470
2471 /* don't let timeouts decrease the waittime below timeout_blocktime */
1716 if (expect_false (waittime < timeout_blocktime)) 2472 if (expect_false (waittime < timeout_blocktime))
1717 waittime = timeout_blocktime; 2473 waittime = timeout_blocktime;
1718 2474
1719 sleeptime = waittime - backend_fudge; 2475 /* extra check because io_blocktime is commonly 0 */
1720
1721 if (expect_true (sleeptime > io_blocktime)) 2476 if (expect_false (io_blocktime))
1722 sleeptime = io_blocktime;
1723
1724 if (sleeptime)
1725 { 2477 {
2478 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2479
2480 if (sleeptime > waittime - backend_fudge)
2481 sleeptime = waittime - backend_fudge;
2482
2483 if (expect_true (sleeptime > 0.))
2484 {
1726 ev_sleep (sleeptime); 2485 ev_sleep (sleeptime);
1727 waittime -= sleeptime; 2486 waittime -= sleeptime;
2487 }
1728 } 2488 }
1729 } 2489 }
1730 2490
2491#if EV_FEATURE_API
1731 ++loop_count; 2492 ++loop_count;
2493#endif
2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1732 backend_poll (EV_A_ waittime); 2495 backend_poll (EV_A_ waittime);
2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1733 2497
1734 /* update ev_rt_now, do magic */ 2498 /* update ev_rt_now, do magic */
1735 time_update (EV_A_ waittime + sleeptime); 2499 time_update (EV_A_ waittime + sleeptime);
1736 } 2500 }
1737 2501
… …
1744#if EV_IDLE_ENABLE 2508#if EV_IDLE_ENABLE
1745 /* queue idle watchers unless other events are pending */ 2509 /* queue idle watchers unless other events are pending */
1746 idle_reify (EV_A); 2510 idle_reify (EV_A);
1747#endif 2511#endif
1748 2512
2513#if EV_CHECK_ENABLE
1749 /* queue check watchers, to be executed first */ 2514 /* queue check watchers, to be executed first */
1750 if (expect_false (checkcnt)) 2515 if (expect_false (checkcnt))
1751 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2516 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2517#endif
1752 2518
1753 call_pending (EV_A); 2519 EV_INVOKE_PENDING;
1754 } 2520 }
1755 while (expect_true ( 2521 while (expect_true (
1756 activecnt 2522 activecnt
1757 && !loop_done 2523 && !loop_done
1758 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2524 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1759 )); 2525 ));
1760 2526
1761 if (loop_done == EVUNLOOP_ONE) 2527 if (loop_done == EVBREAK_ONE)
1762 loop_done = EVUNLOOP_CANCEL; 2528 loop_done = EVBREAK_CANCEL;
1763}
1764 2529
2530#if EV_FEATURE_API
2531 --loop_depth;
2532#endif
2533}
2534
1765void 2535void
1766ev_unloop (EV_P_ int how) 2536ev_break (EV_P_ int how)
1767{ 2537{
1768 loop_done = how; 2538 loop_done = how;
1769} 2539}
1770 2540
2541void
2542ev_ref (EV_P)
2543{
2544 ++activecnt;
2545}
2546
2547void
2548ev_unref (EV_P)
2549{
2550 --activecnt;
2551}
2552
2553void
2554ev_now_update (EV_P)
2555{
2556 time_update (EV_A_ 1e100);
2557}
2558
2559void
2560ev_suspend (EV_P)
2561{
2562 ev_now_update (EV_A);
2563}
2564
2565void
2566ev_resume (EV_P)
2567{
2568 ev_tstamp mn_prev = mn_now;
2569
2570 ev_now_update (EV_A);
2571 timers_reschedule (EV_A_ mn_now - mn_prev);
2572#if EV_PERIODIC_ENABLE
2573 /* TODO: really do this? */
2574 periodics_reschedule (EV_A);
2575#endif
2576}
2577
1771/*****************************************************************************/ 2578/*****************************************************************************/
2579/* singly-linked list management, used when the expected list length is short */
1772 2580
1773void inline_size 2581inline_size void
1774wlist_add (WL *head, WL elem) 2582wlist_add (WL *head, WL elem)
1775{ 2583{
1776 elem->next = *head; 2584 elem->next = *head;
1777 *head = elem; 2585 *head = elem;
1778} 2586}
1779 2587
1780void inline_size 2588inline_size void
1781wlist_del (WL *head, WL elem) 2589wlist_del (WL *head, WL elem)
1782{ 2590{
1783 while (*head) 2591 while (*head)
1784 { 2592 {
1785 if (*head == elem) 2593 if (expect_true (*head == elem))
1786 { 2594 {
1787 *head = elem->next; 2595 *head = elem->next;
1788 return; 2596 break;
1789 } 2597 }
1790 2598
1791 head = &(*head)->next; 2599 head = &(*head)->next;
1792 } 2600 }
1793} 2601}
1794 2602
1795void inline_speed 2603/* internal, faster, version of ev_clear_pending */
2604inline_speed void
1796clear_pending (EV_P_ W w) 2605clear_pending (EV_P_ W w)
1797{ 2606{
1798 if (w->pending) 2607 if (w->pending)
1799 { 2608 {
1800 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2609 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1801 w->pending = 0; 2610 w->pending = 0;
1802 } 2611 }
1803} 2612}
1804 2613
1805int 2614int
… …
1809 int pending = w_->pending; 2618 int pending = w_->pending;
1810 2619
1811 if (expect_true (pending)) 2620 if (expect_true (pending))
1812 { 2621 {
1813 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2622 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2623 p->w = (W)&pending_w;
1814 w_->pending = 0; 2624 w_->pending = 0;
1815 p->w = 0;
1816 return p->events; 2625 return p->events;
1817 } 2626 }
1818 else 2627 else
1819 return 0; 2628 return 0;
1820} 2629}
1821 2630
1822void inline_size 2631inline_size void
1823pri_adjust (EV_P_ W w) 2632pri_adjust (EV_P_ W w)
1824{ 2633{
1825 int pri = w->priority; 2634 int pri = ev_priority (w);
1826 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2635 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1827 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2636 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1828 w->priority = pri; 2637 ev_set_priority (w, pri);
1829} 2638}
1830 2639
1831void inline_speed 2640inline_speed void
1832ev_start (EV_P_ W w, int active) 2641ev_start (EV_P_ W w, int active)
1833{ 2642{
1834 pri_adjust (EV_A_ w); 2643 pri_adjust (EV_A_ w);
1835 w->active = active; 2644 w->active = active;
1836 ev_ref (EV_A); 2645 ev_ref (EV_A);
1837} 2646}
1838 2647
1839void inline_size 2648inline_size void
1840ev_stop (EV_P_ W w) 2649ev_stop (EV_P_ W w)
1841{ 2650{
1842 ev_unref (EV_A); 2651 ev_unref (EV_A);
1843 w->active = 0; 2652 w->active = 0;
1844} 2653}
… …
1851 int fd = w->fd; 2660 int fd = w->fd;
1852 2661
1853 if (expect_false (ev_is_active (w))) 2662 if (expect_false (ev_is_active (w)))
1854 return; 2663 return;
1855 2664
1856 assert (("ev_io_start called with negative fd", fd >= 0)); 2665 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2666 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2667
2668 EV_FREQUENT_CHECK;
1857 2669
1858 ev_start (EV_A_ (W)w, 1); 2670 ev_start (EV_A_ (W)w, 1);
1859 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2671 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1860 wlist_add (&anfds[fd].head, (WL)w); 2672 wlist_add (&anfds[fd].head, (WL)w);
1861 2673
1862 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2674 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1863 w->events &= ~EV_IOFDSET; 2675 w->events &= ~EV__IOFDSET;
2676
2677 EV_FREQUENT_CHECK;
1864} 2678}
1865 2679
1866void noinline 2680void noinline
1867ev_io_stop (EV_P_ ev_io *w) 2681ev_io_stop (EV_P_ ev_io *w)
1868{ 2682{
1869 clear_pending (EV_A_ (W)w); 2683 clear_pending (EV_A_ (W)w);
1870 if (expect_false (!ev_is_active (w))) 2684 if (expect_false (!ev_is_active (w)))
1871 return; 2685 return;
1872 2686
1873 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2687 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2688
2689 EV_FREQUENT_CHECK;
1874 2690
1875 wlist_del (&anfds[w->fd].head, (WL)w); 2691 wlist_del (&anfds[w->fd].head, (WL)w);
1876 ev_stop (EV_A_ (W)w); 2692 ev_stop (EV_A_ (W)w);
1877 2693
1878 fd_change (EV_A_ w->fd, 1); 2694 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2695
2696 EV_FREQUENT_CHECK;
1879} 2697}
1880 2698
1881void noinline 2699void noinline
1882ev_timer_start (EV_P_ ev_timer *w) 2700ev_timer_start (EV_P_ ev_timer *w)
1883{ 2701{
1884 if (expect_false (ev_is_active (w))) 2702 if (expect_false (ev_is_active (w)))
1885 return; 2703 return;
1886 2704
1887 ((WT)w)->at += mn_now; 2705 ev_at (w) += mn_now;
1888 2706
1889 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2707 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1890 2708
2709 EV_FREQUENT_CHECK;
2710
2711 ++timercnt;
1891 ev_start (EV_A_ (W)w, ++timercnt); 2712 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1892 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2713 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1893 timers [timercnt - 1] = (WT)w; 2714 ANHE_w (timers [ev_active (w)]) = (WT)w;
1894 upheap (timers, timercnt - 1); 2715 ANHE_at_cache (timers [ev_active (w)]);
2716 upheap (timers, ev_active (w));
1895 2717
2718 EV_FREQUENT_CHECK;
2719
1896 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2720 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1897} 2721}
1898 2722
1899void noinline 2723void noinline
1900ev_timer_stop (EV_P_ ev_timer *w) 2724ev_timer_stop (EV_P_ ev_timer *w)
1901{ 2725{
1902 clear_pending (EV_A_ (W)w); 2726 clear_pending (EV_A_ (W)w);
1903 if (expect_false (!ev_is_active (w))) 2727 if (expect_false (!ev_is_active (w)))
1904 return; 2728 return;
1905 2729
1906 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2730 EV_FREQUENT_CHECK;
1907 2731
1908 { 2732 {
1909 int active = ((W)w)->active; 2733 int active = ev_active (w);
1910 2734
2735 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2736
2737 --timercnt;
2738
1911 if (expect_true (--active < --timercnt)) 2739 if (expect_true (active < timercnt + HEAP0))
1912 { 2740 {
1913 timers [active] = timers [timercnt]; 2741 timers [active] = timers [timercnt + HEAP0];
1914 adjustheap (timers, timercnt, active); 2742 adjustheap (timers, timercnt, active);
1915 } 2743 }
1916 } 2744 }
1917 2745
1918 ((WT)w)->at -= mn_now; 2746 ev_at (w) -= mn_now;
1919 2747
1920 ev_stop (EV_A_ (W)w); 2748 ev_stop (EV_A_ (W)w);
2749
2750 EV_FREQUENT_CHECK;
1921} 2751}
1922 2752
1923void noinline 2753void noinline
1924ev_timer_again (EV_P_ ev_timer *w) 2754ev_timer_again (EV_P_ ev_timer *w)
1925{ 2755{
2756 EV_FREQUENT_CHECK;
2757
1926 if (ev_is_active (w)) 2758 if (ev_is_active (w))
1927 { 2759 {
1928 if (w->repeat) 2760 if (w->repeat)
1929 { 2761 {
1930 ((WT)w)->at = mn_now + w->repeat; 2762 ev_at (w) = mn_now + w->repeat;
2763 ANHE_at_cache (timers [ev_active (w)]);
1931 adjustheap (timers, timercnt, ((W)w)->active - 1); 2764 adjustheap (timers, timercnt, ev_active (w));
1932 } 2765 }
1933 else 2766 else
1934 ev_timer_stop (EV_A_ w); 2767 ev_timer_stop (EV_A_ w);
1935 } 2768 }
1936 else if (w->repeat) 2769 else if (w->repeat)
1937 { 2770 {
1938 w->at = w->repeat; 2771 ev_at (w) = w->repeat;
1939 ev_timer_start (EV_A_ w); 2772 ev_timer_start (EV_A_ w);
1940 } 2773 }
2774
2775 EV_FREQUENT_CHECK;
2776}
2777
2778ev_tstamp
2779ev_timer_remaining (EV_P_ ev_timer *w)
2780{
2781 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1941} 2782}
1942 2783
1943#if EV_PERIODIC_ENABLE 2784#if EV_PERIODIC_ENABLE
1944void noinline 2785void noinline
1945ev_periodic_start (EV_P_ ev_periodic *w) 2786ev_periodic_start (EV_P_ ev_periodic *w)
1946{ 2787{
1947 if (expect_false (ev_is_active (w))) 2788 if (expect_false (ev_is_active (w)))
1948 return; 2789 return;
1949 2790
1950 if (w->reschedule_cb) 2791 if (w->reschedule_cb)
1951 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2792 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1952 else if (w->interval) 2793 else if (w->interval)
1953 { 2794 {
1954 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2795 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1955 /* this formula differs from the one in periodic_reify because we do not always round up */ 2796 periodic_recalc (EV_A_ w);
1956 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1957 } 2797 }
1958 else 2798 else
1959 ((WT)w)->at = w->offset; 2799 ev_at (w) = w->offset;
1960 2800
2801 EV_FREQUENT_CHECK;
2802
2803 ++periodiccnt;
1961 ev_start (EV_A_ (W)w, ++periodiccnt); 2804 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1962 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2805 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1963 periodics [periodiccnt - 1] = (WT)w; 2806 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1964 upheap (periodics, periodiccnt - 1); 2807 ANHE_at_cache (periodics [ev_active (w)]);
2808 upheap (periodics, ev_active (w));
1965 2809
2810 EV_FREQUENT_CHECK;
2811
1966 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2812 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1967} 2813}
1968 2814
1969void noinline 2815void noinline
1970ev_periodic_stop (EV_P_ ev_periodic *w) 2816ev_periodic_stop (EV_P_ ev_periodic *w)
1971{ 2817{
1972 clear_pending (EV_A_ (W)w); 2818 clear_pending (EV_A_ (W)w);
1973 if (expect_false (!ev_is_active (w))) 2819 if (expect_false (!ev_is_active (w)))
1974 return; 2820 return;
1975 2821
1976 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2822 EV_FREQUENT_CHECK;
1977 2823
1978 { 2824 {
1979 int active = ((W)w)->active; 2825 int active = ev_active (w);
1980 2826
2827 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2828
2829 --periodiccnt;
2830
1981 if (expect_true (--active < --periodiccnt)) 2831 if (expect_true (active < periodiccnt + HEAP0))
1982 { 2832 {
1983 periodics [active] = periodics [periodiccnt]; 2833 periodics [active] = periodics [periodiccnt + HEAP0];
1984 adjustheap (periodics, periodiccnt, active); 2834 adjustheap (periodics, periodiccnt, active);
1985 } 2835 }
1986 } 2836 }
1987 2837
1988 ev_stop (EV_A_ (W)w); 2838 ev_stop (EV_A_ (W)w);
2839
2840 EV_FREQUENT_CHECK;
1989} 2841}
1990 2842
1991void noinline 2843void noinline
1992ev_periodic_again (EV_P_ ev_periodic *w) 2844ev_periodic_again (EV_P_ ev_periodic *w)
1993{ 2845{
… …
1999 2851
2000#ifndef SA_RESTART 2852#ifndef SA_RESTART
2001# define SA_RESTART 0 2853# define SA_RESTART 0
2002#endif 2854#endif
2003 2855
2856#if EV_SIGNAL_ENABLE
2857
2004void noinline 2858void noinline
2005ev_signal_start (EV_P_ ev_signal *w) 2859ev_signal_start (EV_P_ ev_signal *w)
2006{ 2860{
2007#if EV_MULTIPLICITY
2008 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2009#endif
2010 if (expect_false (ev_is_active (w))) 2861 if (expect_false (ev_is_active (w)))
2011 return; 2862 return;
2012 2863
2013 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2864 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2014 2865
2015 evpipe_init (EV_A); 2866#if EV_MULTIPLICITY
2867 assert (("libev: a signal must not be attached to two different loops",
2868 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2016 2869
2870 signals [w->signum - 1].loop = EV_A;
2871#endif
2872
2873 EV_FREQUENT_CHECK;
2874
2875#if EV_USE_SIGNALFD
2876 if (sigfd == -2)
2017 { 2877 {
2018#ifndef _WIN32 2878 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2019 sigset_t full, prev; 2879 if (sigfd < 0 && errno == EINVAL)
2020 sigfillset (&full); 2880 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2021 sigprocmask (SIG_SETMASK, &full, &prev);
2022#endif
2023 2881
2024 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2882 if (sigfd >= 0)
2883 {
2884 fd_intern (sigfd); /* doing it twice will not hurt */
2025 2885
2026#ifndef _WIN32 2886 sigemptyset (&sigfd_set);
2027 sigprocmask (SIG_SETMASK, &prev, 0); 2887
2028#endif 2888 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2889 ev_set_priority (&sigfd_w, EV_MAXPRI);
2890 ev_io_start (EV_A_ &sigfd_w);
2891 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2892 }
2029 } 2893 }
2894
2895 if (sigfd >= 0)
2896 {
2897 /* TODO: check .head */
2898 sigaddset (&sigfd_set, w->signum);
2899 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2900
2901 signalfd (sigfd, &sigfd_set, 0);
2902 }
2903#endif
2030 2904
2031 ev_start (EV_A_ (W)w, 1); 2905 ev_start (EV_A_ (W)w, 1);
2032 wlist_add (&signals [w->signum - 1].head, (WL)w); 2906 wlist_add (&signals [w->signum - 1].head, (WL)w);
2033 2907
2034 if (!((WL)w)->next) 2908 if (!((WL)w)->next)
2909# if EV_USE_SIGNALFD
2910 if (sigfd < 0) /*TODO*/
2911# endif
2035 { 2912 {
2036#if _WIN32 2913# ifdef _WIN32
2914 evpipe_init (EV_A);
2915
2037 signal (w->signum, ev_sighandler); 2916 signal (w->signum, ev_sighandler);
2038#else 2917# else
2039 struct sigaction sa; 2918 struct sigaction sa;
2919
2920 evpipe_init (EV_A);
2921
2040 sa.sa_handler = ev_sighandler; 2922 sa.sa_handler = ev_sighandler;
2041 sigfillset (&sa.sa_mask); 2923 sigfillset (&sa.sa_mask);
2042 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2924 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2043 sigaction (w->signum, &sa, 0); 2925 sigaction (w->signum, &sa, 0);
2926
2927 if (origflags & EVFLAG_NOSIGMASK)
2928 {
2929 sigemptyset (&sa.sa_mask);
2930 sigaddset (&sa.sa_mask, w->signum);
2931 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2932 }
2044#endif 2933#endif
2045 } 2934 }
2935
2936 EV_FREQUENT_CHECK;
2046} 2937}
2047 2938
2048void noinline 2939void noinline
2049ev_signal_stop (EV_P_ ev_signal *w) 2940ev_signal_stop (EV_P_ ev_signal *w)
2050{ 2941{
2051 clear_pending (EV_A_ (W)w); 2942 clear_pending (EV_A_ (W)w);
2052 if (expect_false (!ev_is_active (w))) 2943 if (expect_false (!ev_is_active (w)))
2053 return; 2944 return;
2054 2945
2946 EV_FREQUENT_CHECK;
2947
2055 wlist_del (&signals [w->signum - 1].head, (WL)w); 2948 wlist_del (&signals [w->signum - 1].head, (WL)w);
2056 ev_stop (EV_A_ (W)w); 2949 ev_stop (EV_A_ (W)w);
2057 2950
2058 if (!signals [w->signum - 1].head) 2951 if (!signals [w->signum - 1].head)
2952 {
2953#if EV_MULTIPLICITY
2954 signals [w->signum - 1].loop = 0; /* unattach from signal */
2955#endif
2956#if EV_USE_SIGNALFD
2957 if (sigfd >= 0)
2958 {
2959 sigset_t ss;
2960
2961 sigemptyset (&ss);
2962 sigaddset (&ss, w->signum);
2963 sigdelset (&sigfd_set, w->signum);
2964
2965 signalfd (sigfd, &sigfd_set, 0);
2966 sigprocmask (SIG_UNBLOCK, &ss, 0);
2967 }
2968 else
2969#endif
2059 signal (w->signum, SIG_DFL); 2970 signal (w->signum, SIG_DFL);
2971 }
2972
2973 EV_FREQUENT_CHECK;
2060} 2974}
2975
2976#endif
2977
2978#if EV_CHILD_ENABLE
2061 2979
2062void 2980void
2063ev_child_start (EV_P_ ev_child *w) 2981ev_child_start (EV_P_ ev_child *w)
2064{ 2982{
2065#if EV_MULTIPLICITY 2983#if EV_MULTIPLICITY
2066 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2984 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2067#endif 2985#endif
2068 if (expect_false (ev_is_active (w))) 2986 if (expect_false (ev_is_active (w)))
2069 return; 2987 return;
2070 2988
2989 EV_FREQUENT_CHECK;
2990
2071 ev_start (EV_A_ (W)w, 1); 2991 ev_start (EV_A_ (W)w, 1);
2072 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2992 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2993
2994 EV_FREQUENT_CHECK;
2073} 2995}
2074 2996
2075void 2997void
2076ev_child_stop (EV_P_ ev_child *w) 2998ev_child_stop (EV_P_ ev_child *w)
2077{ 2999{
2078 clear_pending (EV_A_ (W)w); 3000 clear_pending (EV_A_ (W)w);
2079 if (expect_false (!ev_is_active (w))) 3001 if (expect_false (!ev_is_active (w)))
2080 return; 3002 return;
2081 3003
3004 EV_FREQUENT_CHECK;
3005
2082 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3006 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2083 ev_stop (EV_A_ (W)w); 3007 ev_stop (EV_A_ (W)w);
3008
3009 EV_FREQUENT_CHECK;
2084} 3010}
3011
3012#endif
2085 3013
2086#if EV_STAT_ENABLE 3014#if EV_STAT_ENABLE
2087 3015
2088# ifdef _WIN32 3016# ifdef _WIN32
2089# undef lstat 3017# undef lstat
2090# define lstat(a,b) _stati64 (a,b) 3018# define lstat(a,b) _stati64 (a,b)
2091# endif 3019# endif
2092 3020
2093#define DEF_STAT_INTERVAL 5.0074891 3021#define DEF_STAT_INTERVAL 5.0074891
3022#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2094#define MIN_STAT_INTERVAL 0.1074891 3023#define MIN_STAT_INTERVAL 0.1074891
2095 3024
2096static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3025static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2097 3026
2098#if EV_USE_INOTIFY 3027#if EV_USE_INOTIFY
2099# define EV_INOTIFY_BUFSIZE 8192 3028
3029/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3030# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2100 3031
2101static void noinline 3032static void noinline
2102infy_add (EV_P_ ev_stat *w) 3033infy_add (EV_P_ ev_stat *w)
2103{ 3034{
2104 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); 3035 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);
2105 3036
2106 if (w->wd < 0) 3037 if (w->wd >= 0)
3038 {
3039 struct statfs sfs;
3040
3041 /* now local changes will be tracked by inotify, but remote changes won't */
3042 /* unless the filesystem is known to be local, we therefore still poll */
3043 /* also do poll on <2.6.25, but with normal frequency */
3044
3045 if (!fs_2625)
3046 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3047 else if (!statfs (w->path, &sfs)
3048 && (sfs.f_type == 0x1373 /* devfs */
3049 || sfs.f_type == 0xEF53 /* ext2/3 */
3050 || sfs.f_type == 0x3153464a /* jfs */
3051 || sfs.f_type == 0x52654973 /* reiser3 */
3052 || sfs.f_type == 0x01021994 /* tempfs */
3053 || sfs.f_type == 0x58465342 /* xfs */))
3054 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3055 else
3056 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2107 { 3057 }
2108 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3058 else
3059 {
3060 /* can't use inotify, continue to stat */
3061 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2109 3062
2110 /* monitor some parent directory for speedup hints */ 3063 /* if path is not there, monitor some parent directory for speedup hints */
3064 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3065 /* but an efficiency issue only */
2111 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3066 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2112 { 3067 {
2113 char path [4096]; 3068 char path [4096];
2114 strcpy (path, w->path); 3069 strcpy (path, w->path);
2115 3070
… …
2118 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3073 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2119 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3074 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2120 3075
2121 char *pend = strrchr (path, '/'); 3076 char *pend = strrchr (path, '/');
2122 3077
2123 if (!pend) 3078 if (!pend || pend == path)
2124 break; /* whoops, no '/', complain to your admin */ 3079 break;
2125 3080
2126 *pend = 0; 3081 *pend = 0;
2127 w->wd = inotify_add_watch (fs_fd, path, mask); 3082 w->wd = inotify_add_watch (fs_fd, path, mask);
2128 } 3083 }
2129 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3084 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2130 } 3085 }
2131 } 3086 }
2132 else
2133 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2134 3087
2135 if (w->wd >= 0) 3088 if (w->wd >= 0)
2136 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3089 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3090
3091 /* now re-arm timer, if required */
3092 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3093 ev_timer_again (EV_A_ &w->timer);
3094 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2137} 3095}
2138 3096
2139static void noinline 3097static void noinline
2140infy_del (EV_P_ ev_stat *w) 3098infy_del (EV_P_ ev_stat *w)
2141{ 3099{
… …
2144 3102
2145 if (wd < 0) 3103 if (wd < 0)
2146 return; 3104 return;
2147 3105
2148 w->wd = -2; 3106 w->wd = -2;
2149 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3107 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2150 wlist_del (&fs_hash [slot].head, (WL)w); 3108 wlist_del (&fs_hash [slot].head, (WL)w);
2151 3109
2152 /* remove this watcher, if others are watching it, they will rearm */ 3110 /* remove this watcher, if others are watching it, they will rearm */
2153 inotify_rm_watch (fs_fd, wd); 3111 inotify_rm_watch (fs_fd, wd);
2154} 3112}
2155 3113
2156static void noinline 3114static void noinline
2157infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3115infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2158{ 3116{
2159 if (slot < 0) 3117 if (slot < 0)
2160 /* overflow, need to check for all hahs slots */ 3118 /* overflow, need to check for all hash slots */
2161 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3119 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2162 infy_wd (EV_A_ slot, wd, ev); 3120 infy_wd (EV_A_ slot, wd, ev);
2163 else 3121 else
2164 { 3122 {
2165 WL w_; 3123 WL w_;
2166 3124
2167 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3125 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2168 { 3126 {
2169 ev_stat *w = (ev_stat *)w_; 3127 ev_stat *w = (ev_stat *)w_;
2170 w_ = w_->next; /* lets us remove this watcher and all before it */ 3128 w_ = w_->next; /* lets us remove this watcher and all before it */
2171 3129
2172 if (w->wd == wd || wd == -1) 3130 if (w->wd == wd || wd == -1)
2173 { 3131 {
2174 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3132 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2175 { 3133 {
3134 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2176 w->wd = -1; 3135 w->wd = -1;
2177 infy_add (EV_A_ w); /* re-add, no matter what */ 3136 infy_add (EV_A_ w); /* re-add, no matter what */
2178 } 3137 }
2179 3138
2180 stat_timer_cb (EV_A_ &w->timer, 0); 3139 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2185 3144
2186static void 3145static void
2187infy_cb (EV_P_ ev_io *w, int revents) 3146infy_cb (EV_P_ ev_io *w, int revents)
2188{ 3147{
2189 char buf [EV_INOTIFY_BUFSIZE]; 3148 char buf [EV_INOTIFY_BUFSIZE];
2190 struct inotify_event *ev = (struct inotify_event *)buf;
2191 int ofs; 3149 int ofs;
2192 int len = read (fs_fd, buf, sizeof (buf)); 3150 int len = read (fs_fd, buf, sizeof (buf));
2193 3151
2194 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3152 for (ofs = 0; ofs < len; )
3153 {
3154 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2195 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3155 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156 ofs += sizeof (struct inotify_event) + ev->len;
3157 }
2196} 3158}
2197 3159
2198void inline_size 3160inline_size void
3161ev_check_2625 (EV_P)
3162{
3163 /* kernels < 2.6.25 are borked
3164 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3165 */
3166 if (ev_linux_version () < 0x020619)
3167 return;
3168
3169 fs_2625 = 1;
3170}
3171
3172inline_size int
3173infy_newfd (void)
3174{
3175#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3176 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3177 if (fd >= 0)
3178 return fd;
3179#endif
3180 return inotify_init ();
3181}
3182
3183inline_size void
2199infy_init (EV_P) 3184infy_init (EV_P)
2200{ 3185{
2201 if (fs_fd != -2) 3186 if (fs_fd != -2)
2202 return; 3187 return;
2203 3188
3189 fs_fd = -1;
3190
3191 ev_check_2625 (EV_A);
3192
2204 fs_fd = inotify_init (); 3193 fs_fd = infy_newfd ();
2205 3194
2206 if (fs_fd >= 0) 3195 if (fs_fd >= 0)
2207 { 3196 {
3197 fd_intern (fs_fd);
2208 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3198 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2209 ev_set_priority (&fs_w, EV_MAXPRI); 3199 ev_set_priority (&fs_w, EV_MAXPRI);
2210 ev_io_start (EV_A_ &fs_w); 3200 ev_io_start (EV_A_ &fs_w);
3201 ev_unref (EV_A);
2211 } 3202 }
2212} 3203}
2213 3204
2214void inline_size 3205inline_size void
2215infy_fork (EV_P) 3206infy_fork (EV_P)
2216{ 3207{
2217 int slot; 3208 int slot;
2218 3209
2219 if (fs_fd < 0) 3210 if (fs_fd < 0)
2220 return; 3211 return;
2221 3212
3213 ev_ref (EV_A);
3214 ev_io_stop (EV_A_ &fs_w);
2222 close (fs_fd); 3215 close (fs_fd);
2223 fs_fd = inotify_init (); 3216 fs_fd = infy_newfd ();
2224 3217
3218 if (fs_fd >= 0)
3219 {
3220 fd_intern (fs_fd);
3221 ev_io_set (&fs_w, fs_fd, EV_READ);
3222 ev_io_start (EV_A_ &fs_w);
3223 ev_unref (EV_A);
3224 }
3225
2225 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3226 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2226 { 3227 {
2227 WL w_ = fs_hash [slot].head; 3228 WL w_ = fs_hash [slot].head;
2228 fs_hash [slot].head = 0; 3229 fs_hash [slot].head = 0;
2229 3230
2230 while (w_) 3231 while (w_)
… …
2235 w->wd = -1; 3236 w->wd = -1;
2236 3237
2237 if (fs_fd >= 0) 3238 if (fs_fd >= 0)
2238 infy_add (EV_A_ w); /* re-add, no matter what */ 3239 infy_add (EV_A_ w); /* re-add, no matter what */
2239 else 3240 else
3241 {
3242 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3243 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2240 ev_timer_start (EV_A_ &w->timer); 3244 ev_timer_again (EV_A_ &w->timer);
3245 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3246 }
2241 } 3247 }
2242
2243 } 3248 }
2244} 3249}
2245 3250
3251#endif
3252
3253#ifdef _WIN32
3254# define EV_LSTAT(p,b) _stati64 (p, b)
3255#else
3256# define EV_LSTAT(p,b) lstat (p, b)
2246#endif 3257#endif
2247 3258
2248void 3259void
2249ev_stat_stat (EV_P_ ev_stat *w) 3260ev_stat_stat (EV_P_ ev_stat *w)
2250{ 3261{
… …
2257static void noinline 3268static void noinline
2258stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3269stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2259{ 3270{
2260 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3271 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2261 3272
2262 /* we copy this here each the time so that */ 3273 ev_statdata prev = w->attr;
2263 /* prev has the old value when the callback gets invoked */
2264 w->prev = w->attr;
2265 ev_stat_stat (EV_A_ w); 3274 ev_stat_stat (EV_A_ w);
2266 3275
2267 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3276 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2268 if ( 3277 if (
2269 w->prev.st_dev != w->attr.st_dev 3278 prev.st_dev != w->attr.st_dev
2270 || w->prev.st_ino != w->attr.st_ino 3279 || prev.st_ino != w->attr.st_ino
2271 || w->prev.st_mode != w->attr.st_mode 3280 || prev.st_mode != w->attr.st_mode
2272 || w->prev.st_nlink != w->attr.st_nlink 3281 || prev.st_nlink != w->attr.st_nlink
2273 || w->prev.st_uid != w->attr.st_uid 3282 || prev.st_uid != w->attr.st_uid
2274 || w->prev.st_gid != w->attr.st_gid 3283 || prev.st_gid != w->attr.st_gid
2275 || w->prev.st_rdev != w->attr.st_rdev 3284 || prev.st_rdev != w->attr.st_rdev
2276 || w->prev.st_size != w->attr.st_size 3285 || prev.st_size != w->attr.st_size
2277 || w->prev.st_atime != w->attr.st_atime 3286 || prev.st_atime != w->attr.st_atime
2278 || w->prev.st_mtime != w->attr.st_mtime 3287 || prev.st_mtime != w->attr.st_mtime
2279 || w->prev.st_ctime != w->attr.st_ctime 3288 || prev.st_ctime != w->attr.st_ctime
2280 ) { 3289 ) {
3290 /* we only update w->prev on actual differences */
3291 /* in case we test more often than invoke the callback, */
3292 /* to ensure that prev is always different to attr */
3293 w->prev = prev;
3294
2281 #if EV_USE_INOTIFY 3295 #if EV_USE_INOTIFY
3296 if (fs_fd >= 0)
3297 {
2282 infy_del (EV_A_ w); 3298 infy_del (EV_A_ w);
2283 infy_add (EV_A_ w); 3299 infy_add (EV_A_ w);
2284 ev_stat_stat (EV_A_ w); /* avoid race... */ 3300 ev_stat_stat (EV_A_ w); /* avoid race... */
3301 }
2285 #endif 3302 #endif
2286 3303
2287 ev_feed_event (EV_A_ w, EV_STAT); 3304 ev_feed_event (EV_A_ w, EV_STAT);
2288 } 3305 }
2289} 3306}
… …
2292ev_stat_start (EV_P_ ev_stat *w) 3309ev_stat_start (EV_P_ ev_stat *w)
2293{ 3310{
2294 if (expect_false (ev_is_active (w))) 3311 if (expect_false (ev_is_active (w)))
2295 return; 3312 return;
2296 3313
2297 /* since we use memcmp, we need to clear any padding data etc. */
2298 memset (&w->prev, 0, sizeof (ev_statdata));
2299 memset (&w->attr, 0, sizeof (ev_statdata));
2300
2301 ev_stat_stat (EV_A_ w); 3314 ev_stat_stat (EV_A_ w);
2302 3315
3316 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2303 if (w->interval < MIN_STAT_INTERVAL) 3317 w->interval = MIN_STAT_INTERVAL;
2304 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2305 3318
2306 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3319 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2307 ev_set_priority (&w->timer, ev_priority (w)); 3320 ev_set_priority (&w->timer, ev_priority (w));
2308 3321
2309#if EV_USE_INOTIFY 3322#if EV_USE_INOTIFY
2310 infy_init (EV_A); 3323 infy_init (EV_A);
2311 3324
2312 if (fs_fd >= 0) 3325 if (fs_fd >= 0)
2313 infy_add (EV_A_ w); 3326 infy_add (EV_A_ w);
2314 else 3327 else
2315#endif 3328#endif
3329 {
2316 ev_timer_start (EV_A_ &w->timer); 3330 ev_timer_again (EV_A_ &w->timer);
3331 ev_unref (EV_A);
3332 }
2317 3333
2318 ev_start (EV_A_ (W)w, 1); 3334 ev_start (EV_A_ (W)w, 1);
3335
3336 EV_FREQUENT_CHECK;
2319} 3337}
2320 3338
2321void 3339void
2322ev_stat_stop (EV_P_ ev_stat *w) 3340ev_stat_stop (EV_P_ ev_stat *w)
2323{ 3341{
2324 clear_pending (EV_A_ (W)w); 3342 clear_pending (EV_A_ (W)w);
2325 if (expect_false (!ev_is_active (w))) 3343 if (expect_false (!ev_is_active (w)))
2326 return; 3344 return;
2327 3345
3346 EV_FREQUENT_CHECK;
3347
2328#if EV_USE_INOTIFY 3348#if EV_USE_INOTIFY
2329 infy_del (EV_A_ w); 3349 infy_del (EV_A_ w);
2330#endif 3350#endif
3351
3352 if (ev_is_active (&w->timer))
3353 {
3354 ev_ref (EV_A);
2331 ev_timer_stop (EV_A_ &w->timer); 3355 ev_timer_stop (EV_A_ &w->timer);
3356 }
2332 3357
2333 ev_stop (EV_A_ (W)w); 3358 ev_stop (EV_A_ (W)w);
3359
3360 EV_FREQUENT_CHECK;
2334} 3361}
2335#endif 3362#endif
2336 3363
2337#if EV_IDLE_ENABLE 3364#if EV_IDLE_ENABLE
2338void 3365void
… …
2340{ 3367{
2341 if (expect_false (ev_is_active (w))) 3368 if (expect_false (ev_is_active (w)))
2342 return; 3369 return;
2343 3370
2344 pri_adjust (EV_A_ (W)w); 3371 pri_adjust (EV_A_ (W)w);
3372
3373 EV_FREQUENT_CHECK;
2345 3374
2346 { 3375 {
2347 int active = ++idlecnt [ABSPRI (w)]; 3376 int active = ++idlecnt [ABSPRI (w)];
2348 3377
2349 ++idleall; 3378 ++idleall;
2350 ev_start (EV_A_ (W)w, active); 3379 ev_start (EV_A_ (W)w, active);
2351 3380
2352 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3381 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2353 idles [ABSPRI (w)][active - 1] = w; 3382 idles [ABSPRI (w)][active - 1] = w;
2354 } 3383 }
3384
3385 EV_FREQUENT_CHECK;
2355} 3386}
2356 3387
2357void 3388void
2358ev_idle_stop (EV_P_ ev_idle *w) 3389ev_idle_stop (EV_P_ ev_idle *w)
2359{ 3390{
2360 clear_pending (EV_A_ (W)w); 3391 clear_pending (EV_A_ (W)w);
2361 if (expect_false (!ev_is_active (w))) 3392 if (expect_false (!ev_is_active (w)))
2362 return; 3393 return;
2363 3394
3395 EV_FREQUENT_CHECK;
3396
2364 { 3397 {
2365 int active = ((W)w)->active; 3398 int active = ev_active (w);
2366 3399
2367 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3400 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2368 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3401 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2369 3402
2370 ev_stop (EV_A_ (W)w); 3403 ev_stop (EV_A_ (W)w);
2371 --idleall; 3404 --idleall;
2372 } 3405 }
2373}
2374#endif
2375 3406
3407 EV_FREQUENT_CHECK;
3408}
3409#endif
3410
3411#if EV_PREPARE_ENABLE
2376void 3412void
2377ev_prepare_start (EV_P_ ev_prepare *w) 3413ev_prepare_start (EV_P_ ev_prepare *w)
2378{ 3414{
2379 if (expect_false (ev_is_active (w))) 3415 if (expect_false (ev_is_active (w)))
2380 return; 3416 return;
3417
3418 EV_FREQUENT_CHECK;
2381 3419
2382 ev_start (EV_A_ (W)w, ++preparecnt); 3420 ev_start (EV_A_ (W)w, ++preparecnt);
2383 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3421 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2384 prepares [preparecnt - 1] = w; 3422 prepares [preparecnt - 1] = w;
3423
3424 EV_FREQUENT_CHECK;
2385} 3425}
2386 3426
2387void 3427void
2388ev_prepare_stop (EV_P_ ev_prepare *w) 3428ev_prepare_stop (EV_P_ ev_prepare *w)
2389{ 3429{
2390 clear_pending (EV_A_ (W)w); 3430 clear_pending (EV_A_ (W)w);
2391 if (expect_false (!ev_is_active (w))) 3431 if (expect_false (!ev_is_active (w)))
2392 return; 3432 return;
2393 3433
3434 EV_FREQUENT_CHECK;
3435
2394 { 3436 {
2395 int active = ((W)w)->active; 3437 int active = ev_active (w);
3438
2396 prepares [active - 1] = prepares [--preparecnt]; 3439 prepares [active - 1] = prepares [--preparecnt];
2397 ((W)prepares [active - 1])->active = active; 3440 ev_active (prepares [active - 1]) = active;
2398 } 3441 }
2399 3442
2400 ev_stop (EV_A_ (W)w); 3443 ev_stop (EV_A_ (W)w);
2401}
2402 3444
3445 EV_FREQUENT_CHECK;
3446}
3447#endif
3448
3449#if EV_CHECK_ENABLE
2403void 3450void
2404ev_check_start (EV_P_ ev_check *w) 3451ev_check_start (EV_P_ ev_check *w)
2405{ 3452{
2406 if (expect_false (ev_is_active (w))) 3453 if (expect_false (ev_is_active (w)))
2407 return; 3454 return;
3455
3456 EV_FREQUENT_CHECK;
2408 3457
2409 ev_start (EV_A_ (W)w, ++checkcnt); 3458 ev_start (EV_A_ (W)w, ++checkcnt);
2410 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3459 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2411 checks [checkcnt - 1] = w; 3460 checks [checkcnt - 1] = w;
3461
3462 EV_FREQUENT_CHECK;
2412} 3463}
2413 3464
2414void 3465void
2415ev_check_stop (EV_P_ ev_check *w) 3466ev_check_stop (EV_P_ ev_check *w)
2416{ 3467{
2417 clear_pending (EV_A_ (W)w); 3468 clear_pending (EV_A_ (W)w);
2418 if (expect_false (!ev_is_active (w))) 3469 if (expect_false (!ev_is_active (w)))
2419 return; 3470 return;
2420 3471
3472 EV_FREQUENT_CHECK;
3473
2421 { 3474 {
2422 int active = ((W)w)->active; 3475 int active = ev_active (w);
3476
2423 checks [active - 1] = checks [--checkcnt]; 3477 checks [active - 1] = checks [--checkcnt];
2424 ((W)checks [active - 1])->active = active; 3478 ev_active (checks [active - 1]) = active;
2425 } 3479 }
2426 3480
2427 ev_stop (EV_A_ (W)w); 3481 ev_stop (EV_A_ (W)w);
3482
3483 EV_FREQUENT_CHECK;
2428} 3484}
3485#endif
2429 3486
2430#if EV_EMBED_ENABLE 3487#if EV_EMBED_ENABLE
2431void noinline 3488void noinline
2432ev_embed_sweep (EV_P_ ev_embed *w) 3489ev_embed_sweep (EV_P_ ev_embed *w)
2433{ 3490{
2434 ev_loop (w->other, EVLOOP_NONBLOCK); 3491 ev_run (w->other, EVRUN_NOWAIT);
2435} 3492}
2436 3493
2437static void 3494static void
2438embed_io_cb (EV_P_ ev_io *io, int revents) 3495embed_io_cb (EV_P_ ev_io *io, int revents)
2439{ 3496{
2440 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3497 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2441 3498
2442 if (ev_cb (w)) 3499 if (ev_cb (w))
2443 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3500 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2444 else 3501 else
2445 ev_loop (w->other, EVLOOP_NONBLOCK); 3502 ev_run (w->other, EVRUN_NOWAIT);
2446} 3503}
2447 3504
2448static void 3505static void
2449embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3506embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2450{ 3507{
2451 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3508 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2452 3509
2453 { 3510 {
2454 struct ev_loop *loop = w->other; 3511 EV_P = w->other;
2455 3512
2456 while (fdchangecnt) 3513 while (fdchangecnt)
2457 { 3514 {
2458 fd_reify (EV_A); 3515 fd_reify (EV_A);
2459 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3516 ev_run (EV_A_ EVRUN_NOWAIT);
2460 } 3517 }
2461 } 3518 }
3519}
3520
3521static void
3522embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3523{
3524 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3525
3526 ev_embed_stop (EV_A_ w);
3527
3528 {
3529 EV_P = w->other;
3530
3531 ev_loop_fork (EV_A);
3532 ev_run (EV_A_ EVRUN_NOWAIT);
3533 }
3534
3535 ev_embed_start (EV_A_ w);
2462} 3536}
2463 3537
2464#if 0 3538#if 0
2465static void 3539static void
2466embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3540embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2474{ 3548{
2475 if (expect_false (ev_is_active (w))) 3549 if (expect_false (ev_is_active (w)))
2476 return; 3550 return;
2477 3551
2478 { 3552 {
2479 struct ev_loop *loop = w->other; 3553 EV_P = w->other;
2480 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3554 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2481 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3555 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2482 } 3556 }
3557
3558 EV_FREQUENT_CHECK;
2483 3559
2484 ev_set_priority (&w->io, ev_priority (w)); 3560 ev_set_priority (&w->io, ev_priority (w));
2485 ev_io_start (EV_A_ &w->io); 3561 ev_io_start (EV_A_ &w->io);
2486 3562
2487 ev_prepare_init (&w->prepare, embed_prepare_cb); 3563 ev_prepare_init (&w->prepare, embed_prepare_cb);
2488 ev_set_priority (&w->prepare, EV_MINPRI); 3564 ev_set_priority (&w->prepare, EV_MINPRI);
2489 ev_prepare_start (EV_A_ &w->prepare); 3565 ev_prepare_start (EV_A_ &w->prepare);
2490 3566
3567 ev_fork_init (&w->fork, embed_fork_cb);
3568 ev_fork_start (EV_A_ &w->fork);
3569
2491 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3570 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2492 3571
2493 ev_start (EV_A_ (W)w, 1); 3572 ev_start (EV_A_ (W)w, 1);
3573
3574 EV_FREQUENT_CHECK;
2494} 3575}
2495 3576
2496void 3577void
2497ev_embed_stop (EV_P_ ev_embed *w) 3578ev_embed_stop (EV_P_ ev_embed *w)
2498{ 3579{
2499 clear_pending (EV_A_ (W)w); 3580 clear_pending (EV_A_ (W)w);
2500 if (expect_false (!ev_is_active (w))) 3581 if (expect_false (!ev_is_active (w)))
2501 return; 3582 return;
2502 3583
3584 EV_FREQUENT_CHECK;
3585
2503 ev_io_stop (EV_A_ &w->io); 3586 ev_io_stop (EV_A_ &w->io);
2504 ev_prepare_stop (EV_A_ &w->prepare); 3587 ev_prepare_stop (EV_A_ &w->prepare);
3588 ev_fork_stop (EV_A_ &w->fork);
2505 3589
2506 ev_stop (EV_A_ (W)w); 3590 ev_stop (EV_A_ (W)w);
3591
3592 EV_FREQUENT_CHECK;
2507} 3593}
2508#endif 3594#endif
2509 3595
2510#if EV_FORK_ENABLE 3596#if EV_FORK_ENABLE
2511void 3597void
2512ev_fork_start (EV_P_ ev_fork *w) 3598ev_fork_start (EV_P_ ev_fork *w)
2513{ 3599{
2514 if (expect_false (ev_is_active (w))) 3600 if (expect_false (ev_is_active (w)))
2515 return; 3601 return;
3602
3603 EV_FREQUENT_CHECK;
2516 3604
2517 ev_start (EV_A_ (W)w, ++forkcnt); 3605 ev_start (EV_A_ (W)w, ++forkcnt);
2518 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3606 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2519 forks [forkcnt - 1] = w; 3607 forks [forkcnt - 1] = w;
3608
3609 EV_FREQUENT_CHECK;
2520} 3610}
2521 3611
2522void 3612void
2523ev_fork_stop (EV_P_ ev_fork *w) 3613ev_fork_stop (EV_P_ ev_fork *w)
2524{ 3614{
2525 clear_pending (EV_A_ (W)w); 3615 clear_pending (EV_A_ (W)w);
2526 if (expect_false (!ev_is_active (w))) 3616 if (expect_false (!ev_is_active (w)))
2527 return; 3617 return;
2528 3618
3619 EV_FREQUENT_CHECK;
3620
2529 { 3621 {
2530 int active = ((W)w)->active; 3622 int active = ev_active (w);
3623
2531 forks [active - 1] = forks [--forkcnt]; 3624 forks [active - 1] = forks [--forkcnt];
2532 ((W)forks [active - 1])->active = active; 3625 ev_active (forks [active - 1]) = active;
2533 } 3626 }
2534 3627
2535 ev_stop (EV_A_ (W)w); 3628 ev_stop (EV_A_ (W)w);
2536}
2537#endif
2538 3629
3630 EV_FREQUENT_CHECK;
3631}
3632#endif
3633
2539#if EV_ASYNC_ENABLE 3634#if EV_CLEANUP_ENABLE
2540void 3635void
2541ev_async_start (EV_P_ ev_async *w) 3636ev_cleanup_start (EV_P_ ev_cleanup *w)
2542{ 3637{
2543 if (expect_false (ev_is_active (w))) 3638 if (expect_false (ev_is_active (w)))
2544 return; 3639 return;
2545 3640
3641 EV_FREQUENT_CHECK;
3642
3643 ev_start (EV_A_ (W)w, ++cleanupcnt);
3644 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3645 cleanups [cleanupcnt - 1] = w;
3646
3647 /* cleanup watchers should never keep a refcount on the loop */
3648 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK;
3650}
3651
3652void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w)
3654{
3655 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w)))
3657 return;
3658
3659 EV_FREQUENT_CHECK;
3660 ev_ref (EV_A);
3661
3662 {
3663 int active = ev_active (w);
3664
3665 cleanups [active - 1] = cleanups [--cleanupcnt];
3666 ev_active (cleanups [active - 1]) = active;
3667 }
3668
3669 ev_stop (EV_A_ (W)w);
3670
3671 EV_FREQUENT_CHECK;
3672}
3673#endif
3674
3675#if EV_ASYNC_ENABLE
3676void
3677ev_async_start (EV_P_ ev_async *w)
3678{
3679 if (expect_false (ev_is_active (w)))
3680 return;
3681
3682 w->sent = 0;
3683
2546 evpipe_init (EV_A); 3684 evpipe_init (EV_A);
3685
3686 EV_FREQUENT_CHECK;
2547 3687
2548 ev_start (EV_A_ (W)w, ++asynccnt); 3688 ev_start (EV_A_ (W)w, ++asynccnt);
2549 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3689 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2550 asyncs [asynccnt - 1] = w; 3690 asyncs [asynccnt - 1] = w;
3691
3692 EV_FREQUENT_CHECK;
2551} 3693}
2552 3694
2553void 3695void
2554ev_async_stop (EV_P_ ev_async *w) 3696ev_async_stop (EV_P_ ev_async *w)
2555{ 3697{
2556 clear_pending (EV_A_ (W)w); 3698 clear_pending (EV_A_ (W)w);
2557 if (expect_false (!ev_is_active (w))) 3699 if (expect_false (!ev_is_active (w)))
2558 return; 3700 return;
2559 3701
3702 EV_FREQUENT_CHECK;
3703
2560 { 3704 {
2561 int active = ((W)w)->active; 3705 int active = ev_active (w);
3706
2562 asyncs [active - 1] = asyncs [--asynccnt]; 3707 asyncs [active - 1] = asyncs [--asynccnt];
2563 ((W)asyncs [active - 1])->active = active; 3708 ev_active (asyncs [active - 1]) = active;
2564 } 3709 }
2565 3710
2566 ev_stop (EV_A_ (W)w); 3711 ev_stop (EV_A_ (W)w);
3712
3713 EV_FREQUENT_CHECK;
2567} 3714}
2568 3715
2569void 3716void
2570ev_async_send (EV_P_ ev_async *w) 3717ev_async_send (EV_P_ ev_async *w)
2571{ 3718{
2572 w->sent = 1; 3719 w->sent = 1;
2573 evpipe_write (EV_A_ &gotasync); 3720 evpipe_write (EV_A_ &async_pending);
2574} 3721}
2575#endif 3722#endif
2576 3723
2577/*****************************************************************************/ 3724/*****************************************************************************/
2578 3725
… …
2588once_cb (EV_P_ struct ev_once *once, int revents) 3735once_cb (EV_P_ struct ev_once *once, int revents)
2589{ 3736{
2590 void (*cb)(int revents, void *arg) = once->cb; 3737 void (*cb)(int revents, void *arg) = once->cb;
2591 void *arg = once->arg; 3738 void *arg = once->arg;
2592 3739
2593 ev_io_stop (EV_A_ &once->io); 3740 ev_io_stop (EV_A_ &once->io);
2594 ev_timer_stop (EV_A_ &once->to); 3741 ev_timer_stop (EV_A_ &once->to);
2595 ev_free (once); 3742 ev_free (once);
2596 3743
2597 cb (revents, arg); 3744 cb (revents, arg);
2598} 3745}
2599 3746
2600static void 3747static void
2601once_cb_io (EV_P_ ev_io *w, int revents) 3748once_cb_io (EV_P_ ev_io *w, int revents)
2602{ 3749{
2603 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3750 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3751
3752 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2604} 3753}
2605 3754
2606static void 3755static void
2607once_cb_to (EV_P_ ev_timer *w, int revents) 3756once_cb_to (EV_P_ ev_timer *w, int revents)
2608{ 3757{
2609 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3758 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3759
3760 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2610} 3761}
2611 3762
2612void 3763void
2613ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3764ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2614{ 3765{
2615 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3766 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2616 3767
2617 if (expect_false (!once)) 3768 if (expect_false (!once))
2618 { 3769 {
2619 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3770 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2620 return; 3771 return;
2621 } 3772 }
2622 3773
2623 once->cb = cb; 3774 once->cb = cb;
2624 once->arg = arg; 3775 once->arg = arg;
… …
2636 ev_timer_set (&once->to, timeout, 0.); 3787 ev_timer_set (&once->to, timeout, 0.);
2637 ev_timer_start (EV_A_ &once->to); 3788 ev_timer_start (EV_A_ &once->to);
2638 } 3789 }
2639} 3790}
2640 3791
3792/*****************************************************************************/
3793
3794#if EV_WALK_ENABLE
3795void
3796ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3797{
3798 int i, j;
3799 ev_watcher_list *wl, *wn;
3800
3801 if (types & (EV_IO | EV_EMBED))
3802 for (i = 0; i < anfdmax; ++i)
3803 for (wl = anfds [i].head; wl; )
3804 {
3805 wn = wl->next;
3806
3807#if EV_EMBED_ENABLE
3808 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3809 {
3810 if (types & EV_EMBED)
3811 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3812 }
3813 else
3814#endif
3815#if EV_USE_INOTIFY
3816 if (ev_cb ((ev_io *)wl) == infy_cb)
3817 ;
3818 else
3819#endif
3820 if ((ev_io *)wl != &pipe_w)
3821 if (types & EV_IO)
3822 cb (EV_A_ EV_IO, wl);
3823
3824 wl = wn;
3825 }
3826
3827 if (types & (EV_TIMER | EV_STAT))
3828 for (i = timercnt + HEAP0; i-- > HEAP0; )
3829#if EV_STAT_ENABLE
3830 /*TODO: timer is not always active*/
3831 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3832 {
3833 if (types & EV_STAT)
3834 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3835 }
3836 else
3837#endif
3838 if (types & EV_TIMER)
3839 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3840
3841#if EV_PERIODIC_ENABLE
3842 if (types & EV_PERIODIC)
3843 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3844 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3845#endif
3846
3847#if EV_IDLE_ENABLE
3848 if (types & EV_IDLE)
3849 for (j = NUMPRI; i--; )
3850 for (i = idlecnt [j]; i--; )
3851 cb (EV_A_ EV_IDLE, idles [j][i]);
3852#endif
3853
3854#if EV_FORK_ENABLE
3855 if (types & EV_FORK)
3856 for (i = forkcnt; i--; )
3857 if (ev_cb (forks [i]) != embed_fork_cb)
3858 cb (EV_A_ EV_FORK, forks [i]);
3859#endif
3860
3861#if EV_ASYNC_ENABLE
3862 if (types & EV_ASYNC)
3863 for (i = asynccnt; i--; )
3864 cb (EV_A_ EV_ASYNC, asyncs [i]);
3865#endif
3866
3867#if EV_PREPARE_ENABLE
3868 if (types & EV_PREPARE)
3869 for (i = preparecnt; i--; )
3870# if EV_EMBED_ENABLE
3871 if (ev_cb (prepares [i]) != embed_prepare_cb)
3872# endif
3873 cb (EV_A_ EV_PREPARE, prepares [i]);
3874#endif
3875
3876#if EV_CHECK_ENABLE
3877 if (types & EV_CHECK)
3878 for (i = checkcnt; i--; )
3879 cb (EV_A_ EV_CHECK, checks [i]);
3880#endif
3881
3882#if EV_SIGNAL_ENABLE
3883 if (types & EV_SIGNAL)
3884 for (i = 0; i < EV_NSIG - 1; ++i)
3885 for (wl = signals [i].head; wl; )
3886 {
3887 wn = wl->next;
3888 cb (EV_A_ EV_SIGNAL, wl);
3889 wl = wn;
3890 }
3891#endif
3892
3893#if EV_CHILD_ENABLE
3894 if (types & EV_CHILD)
3895 for (i = (EV_PID_HASHSIZE); i--; )
3896 for (wl = childs [i]; wl; )
3897 {
3898 wn = wl->next;
3899 cb (EV_A_ EV_CHILD, wl);
3900 wl = wn;
3901 }
3902#endif
3903/* EV_STAT 0x00001000 /* stat data changed */
3904/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3905}
3906#endif
3907
2641#if EV_MULTIPLICITY 3908#if EV_MULTIPLICITY
2642 #include "ev_wrap.h" 3909 #include "ev_wrap.h"
2643#endif 3910#endif
2644 3911
2645#ifdef __cplusplus 3912EV_CPP(})
2646}
2647#endif
2648 3913

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