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Comparing libev/ev.c (file contents):
Revision 1.222 by root, Sun Apr 6 12:45:58 2008 UTC vs.
Revision 1.366 by root, Mon Jan 10 01:58:54 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
130# endif 148# endif
131 149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
157# endif
158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
158#else 189#else
190# include <io.h>
159# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 192# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
163# endif 195# endif
196# undef EV_AVOID_STDIO
164#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
165 206
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
167 208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
236
237#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else
241# define EV_USE_CLOCK_SYSCALL 0
242# endif
243#endif
244
168#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else
169# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
250# endif
170#endif 251#endif
171 252
172#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 255#endif
175 256
176#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
258# if _POSIX_C_SOURCE >= 199309L
259# define EV_USE_NANOSLEEP EV_FEATURE_OS
260# else
177# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
262# endif
178#endif 263#endif
179 264
180#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 267#endif
183 268
184#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
185# ifdef _WIN32 270# ifdef _WIN32
186# define EV_USE_POLL 0 271# define EV_USE_POLL 0
187# else 272# else
188# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 274# endif
190#endif 275#endif
191 276
192#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 280# else
196# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
197# endif 282# endif
198#endif 283#endif
199 284
… …
205# define EV_USE_PORT 0 290# define EV_USE_PORT 0
206#endif 291#endif
207 292
208#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 296# else
212# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
213# endif 298# endif
214#endif 299#endif
215 300
216#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 303#endif
223 304
224#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 307#endif
231 308
232#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 312# else
236# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
237# endif 314# endif
238#endif 315#endif
239 316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
322# endif
323#endif
324
325#if 0 /* debugging */
326# define EV_VERIFY 3
327# define EV_USE_4HEAP 1
328# define EV_HEAP_CACHE_AT 1
329#endif
330
331#ifndef EV_VERIFY
332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
333#endif
334
335#ifndef EV_USE_4HEAP
336# define EV_USE_4HEAP EV_FEATURE_DATA
337#endif
338
339#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
355#endif
356
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
241 364
242#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
245#endif 368#endif
… …
259# include <sys/select.h> 382# include <sys/select.h>
260# endif 383# endif
261#endif 384#endif
262 385
263#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/statfs.h>
264# include <sys/inotify.h> 388# include <sys/inotify.h>
389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
390# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0
393# endif
265#endif 394#endif
266 395
267#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 397# include <winsock.h>
269#endif 398#endif
270 399
271#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h> 402# include <stdint.h>
274# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
275extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
276# endif 405# endif
277int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
278# ifdef __cplusplus 407# ifdef O_CLOEXEC
279} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
280# endif 412# endif
413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430
431struct signalfd_siginfo
432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
281#endif 436#endif
282 437
283/**/ 438/**/
439
440#if EV_VERIFY >= 3
441# define EV_FREQUENT_CHECK ev_verify (EV_A)
442#else
443# define EV_FREQUENT_CHECK do { } while (0)
444#endif
284 445
285/* 446/*
286 * This is used to avoid floating point rounding problems. 447 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics 448 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding 449 * to ensure progress, time-wise, even when rounding
… …
292 */ 453 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294 455
295#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
296#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 458
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
298 461
299#if __GNUC__ >= 4 462#if __GNUC__ >= 4
300# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
301# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
302#else 465#else
303# define expect(expr,value) (expr) 466# define expect(expr,value) (expr)
304# define noinline 467# define noinline
305# if __STDC_VERSION__ < 199901L 468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline 469# define inline
307# endif 470# endif
308#endif 471#endif
309 472
310#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
311#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
312#define inline_size static inline 475#define inline_size static inline
313 476
314#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
315# define inline_speed static noinline 480# define inline_speed static noinline
481#endif
482
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484
485#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0)
316#else 487#else
317# define inline_speed static inline
318#endif
319
320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
322 490
323#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
325 493
326typedef ev_watcher *W; 494typedef ev_watcher *W;
327typedef ev_watcher_list *WL; 495typedef ev_watcher_list *WL;
328typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
329 497
498#define ev_active(w) ((W)(w))->active
499#define ev_at(w) ((WT)(w))->at
500
501#if EV_USE_REALTIME
502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
503/* giving it a reasonably high chance of working on typical architectures */
504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
505#endif
506
330#if EV_USE_MONOTONIC 507#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? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
509#endif
510
511#ifndef EV_FD_TO_WIN32_HANDLE
512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
513#endif
514#ifndef EV_WIN32_HANDLE_TO_FD
515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
516#endif
517#ifndef EV_WIN32_CLOSE_FD
518# define EV_WIN32_CLOSE_FD(fd) close (fd)
334#endif 519#endif
335 520
336#ifdef _WIN32 521#ifdef _WIN32
337# include "ev_win32.c" 522# include "ev_win32.c"
338#endif 523#endif
339 524
340/*****************************************************************************/ 525/*****************************************************************************/
341 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
576
342static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
343 578
344void 579void
345ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
346{ 581{
347 syserr_cb = cb; 582 syserr_cb = cb;
348} 583}
349 584
350static void noinline 585static void noinline
351syserr (const char *msg) 586ev_syserr (const char *msg)
352{ 587{
353 if (!msg) 588 if (!msg)
354 msg = "(libev) system error"; 589 msg = "(libev) system error";
355 590
356 if (syserr_cb) 591 if (syserr_cb)
357 syserr_cb (msg); 592 syserr_cb (msg);
358 else 593 else
359 { 594 {
595#if EV_AVOID_STDIO
596 ev_printerr (msg);
597 ev_printerr (": ");
598 ev_printerr (strerror (errno));
599 ev_printerr ("\n");
600#else
360 perror (msg); 601 perror (msg);
602#endif
361 abort (); 603 abort ();
362 } 604 }
363} 605}
364 606
607static void *
608ev_realloc_emul (void *ptr, long size)
609{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
613 /* some systems, notably openbsd and darwin, fail to properly
614 * implement realloc (x, 0) (as required by both ansi c-89 and
615 * the single unix specification, so work around them here.
616 */
617
618 if (size)
619 return realloc (ptr, size);
620
621 free (ptr);
622 return 0;
623#endif
624}
625
365static void *(*alloc)(void *ptr, long size); 626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
366 627
367void 628void
368ev_set_allocator (void *(*cb)(void *ptr, long size)) 629ev_set_allocator (void *(*cb)(void *ptr, long size))
369{ 630{
370 alloc = cb; 631 alloc = cb;
371} 632}
372 633
373inline_speed void * 634inline_speed void *
374ev_realloc (void *ptr, long size) 635ev_realloc (void *ptr, long size)
375{ 636{
376 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 637 ptr = alloc (ptr, size);
377 638
378 if (!ptr && size) 639 if (!ptr && size)
379 { 640 {
641#if EV_AVOID_STDIO
642 ev_printerr ("(libev) memory allocation failed, aborting.\n");
643#else
380 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 644 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
645#endif
381 abort (); 646 abort ();
382 } 647 }
383 648
384 return ptr; 649 return ptr;
385} 650}
… …
387#define ev_malloc(size) ev_realloc (0, (size)) 652#define ev_malloc(size) ev_realloc (0, (size))
388#define ev_free(ptr) ev_realloc ((ptr), 0) 653#define ev_free(ptr) ev_realloc ((ptr), 0)
389 654
390/*****************************************************************************/ 655/*****************************************************************************/
391 656
657/* set in reify when reification needed */
658#define EV_ANFD_REIFY 1
659
660/* file descriptor info structure */
392typedef struct 661typedef struct
393{ 662{
394 WL head; 663 WL head;
395 unsigned char events; 664 unsigned char events; /* the events watched for */
665 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
666 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
396 unsigned char reify; 667 unsigned char unused;
668#if EV_USE_EPOLL
669 unsigned int egen; /* generation counter to counter epoll bugs */
670#endif
397#if EV_SELECT_IS_WINSOCKET 671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
398 SOCKET handle; 672 SOCKET handle;
399#endif 673#endif
674#if EV_USE_IOCP
675 OVERLAPPED or, ow;
676#endif
400} ANFD; 677} ANFD;
401 678
679/* stores the pending event set for a given watcher */
402typedef struct 680typedef struct
403{ 681{
404 W w; 682 W w;
405 int events; 683 int events; /* the pending event set for the given watcher */
406} ANPENDING; 684} ANPENDING;
407 685
408#if EV_USE_INOTIFY 686#if EV_USE_INOTIFY
687/* hash table entry per inotify-id */
409typedef struct 688typedef struct
410{ 689{
411 WL head; 690 WL head;
412} ANFS; 691} ANFS;
692#endif
693
694/* Heap Entry */
695#if EV_HEAP_CACHE_AT
696 /* a heap element */
697 typedef struct {
698 ev_tstamp at;
699 WT w;
700 } ANHE;
701
702 #define ANHE_w(he) (he).w /* access watcher, read-write */
703 #define ANHE_at(he) (he).at /* access cached at, read-only */
704 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
705#else
706 /* a heap element */
707 typedef WT ANHE;
708
709 #define ANHE_w(he) (he)
710 #define ANHE_at(he) (he)->at
711 #define ANHE_at_cache(he)
413#endif 712#endif
414 713
415#if EV_MULTIPLICITY 714#if EV_MULTIPLICITY
416 715
417 struct ev_loop 716 struct ev_loop
… …
436 735
437 static int ev_default_loop_ptr; 736 static int ev_default_loop_ptr;
438 737
439#endif 738#endif
440 739
740#if EV_FEATURE_API
741# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
742# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
743# define EV_INVOKE_PENDING invoke_cb (EV_A)
744#else
745# define EV_RELEASE_CB (void)0
746# define EV_ACQUIRE_CB (void)0
747# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
748#endif
749
750#define EVBREAK_RECURSE 0x80
751
441/*****************************************************************************/ 752/*****************************************************************************/
442 753
754#ifndef EV_HAVE_EV_TIME
443ev_tstamp 755ev_tstamp
444ev_time (void) 756ev_time (void)
445{ 757{
446#if EV_USE_REALTIME 758#if EV_USE_REALTIME
759 if (expect_true (have_realtime))
760 {
447 struct timespec ts; 761 struct timespec ts;
448 clock_gettime (CLOCK_REALTIME, &ts); 762 clock_gettime (CLOCK_REALTIME, &ts);
449 return ts.tv_sec + ts.tv_nsec * 1e-9; 763 return ts.tv_sec + ts.tv_nsec * 1e-9;
450#else 764 }
765#endif
766
451 struct timeval tv; 767 struct timeval tv;
452 gettimeofday (&tv, 0); 768 gettimeofday (&tv, 0);
453 return tv.tv_sec + tv.tv_usec * 1e-6; 769 return tv.tv_sec + tv.tv_usec * 1e-6;
454#endif
455} 770}
771#endif
456 772
457ev_tstamp inline_size 773inline_size ev_tstamp
458get_clock (void) 774get_clock (void)
459{ 775{
460#if EV_USE_MONOTONIC 776#if EV_USE_MONOTONIC
461 if (expect_true (have_monotonic)) 777 if (expect_true (have_monotonic))
462 { 778 {
… …
483 if (delay > 0.) 799 if (delay > 0.)
484 { 800 {
485#if EV_USE_NANOSLEEP 801#if EV_USE_NANOSLEEP
486 struct timespec ts; 802 struct timespec ts;
487 803
488 ts.tv_sec = (time_t)delay; 804 EV_TS_SET (ts, delay);
489 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
490
491 nanosleep (&ts, 0); 805 nanosleep (&ts, 0);
492#elif defined(_WIN32) 806#elif defined(_WIN32)
493 Sleep ((unsigned long)(delay * 1e3)); 807 Sleep ((unsigned long)(delay * 1e3));
494#else 808#else
495 struct timeval tv; 809 struct timeval tv;
496 810
497 tv.tv_sec = (time_t)delay; 811 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
498 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 812 /* something not guaranteed by newer posix versions, but guaranteed */
499 813 /* by older ones */
814 EV_TV_SET (tv, delay);
500 select (0, 0, 0, 0, &tv); 815 select (0, 0, 0, 0, &tv);
501#endif 816#endif
502 } 817 }
503} 818}
504 819
505/*****************************************************************************/ 820/*****************************************************************************/
506 821
507int inline_size 822#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
823
824/* find a suitable new size for the given array, */
825/* hopefully by rounding to a nice-to-malloc size */
826inline_size int
508array_nextsize (int elem, int cur, int cnt) 827array_nextsize (int elem, int cur, int cnt)
509{ 828{
510 int ncur = cur + 1; 829 int ncur = cur + 1;
511 830
512 do 831 do
513 ncur <<= 1; 832 ncur <<= 1;
514 while (cnt > ncur); 833 while (cnt > ncur);
515 834
516 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 835 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
517 if (elem * ncur > 4096) 836 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
518 { 837 {
519 ncur *= elem; 838 ncur *= elem;
520 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 839 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
521 ncur = ncur - sizeof (void *) * 4; 840 ncur = ncur - sizeof (void *) * 4;
522 ncur /= elem; 841 ncur /= elem;
523 } 842 }
524 843
525 return ncur; 844 return ncur;
… …
529array_realloc (int elem, void *base, int *cur, int cnt) 848array_realloc (int elem, void *base, int *cur, int cnt)
530{ 849{
531 *cur = array_nextsize (elem, *cur, cnt); 850 *cur = array_nextsize (elem, *cur, cnt);
532 return ev_realloc (base, elem * *cur); 851 return ev_realloc (base, elem * *cur);
533} 852}
853
854#define array_init_zero(base,count) \
855 memset ((void *)(base), 0, sizeof (*(base)) * (count))
534 856
535#define array_needsize(type,base,cur,cnt,init) \ 857#define array_needsize(type,base,cur,cnt,init) \
536 if (expect_false ((cnt) > (cur))) \ 858 if (expect_false ((cnt) > (cur))) \
537 { \ 859 { \
538 int ocur_ = (cur); \ 860 int ocur_ = (cur); \
… …
550 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 872 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
551 } 873 }
552#endif 874#endif
553 875
554#define array_free(stem, idx) \ 876#define array_free(stem, idx) \
555 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 877 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
556 878
557/*****************************************************************************/ 879/*****************************************************************************/
880
881/* dummy callback for pending events */
882static void noinline
883pendingcb (EV_P_ ev_prepare *w, int revents)
884{
885}
558 886
559void noinline 887void noinline
560ev_feed_event (EV_P_ void *w, int revents) 888ev_feed_event (EV_P_ void *w, int revents)
561{ 889{
562 W w_ = (W)w; 890 W w_ = (W)w;
… …
571 pendings [pri][w_->pending - 1].w = w_; 899 pendings [pri][w_->pending - 1].w = w_;
572 pendings [pri][w_->pending - 1].events = revents; 900 pendings [pri][w_->pending - 1].events = revents;
573 } 901 }
574} 902}
575 903
576void inline_speed 904inline_speed void
905feed_reverse (EV_P_ W w)
906{
907 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
908 rfeeds [rfeedcnt++] = w;
909}
910
911inline_size void
912feed_reverse_done (EV_P_ int revents)
913{
914 do
915 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
916 while (rfeedcnt);
917}
918
919inline_speed void
577queue_events (EV_P_ W *events, int eventcnt, int type) 920queue_events (EV_P_ W *events, int eventcnt, int type)
578{ 921{
579 int i; 922 int i;
580 923
581 for (i = 0; i < eventcnt; ++i) 924 for (i = 0; i < eventcnt; ++i)
582 ev_feed_event (EV_A_ events [i], type); 925 ev_feed_event (EV_A_ events [i], type);
583} 926}
584 927
585/*****************************************************************************/ 928/*****************************************************************************/
586 929
587void inline_size 930inline_speed void
588anfds_init (ANFD *base, int count)
589{
590 while (count--)
591 {
592 base->head = 0;
593 base->events = EV_NONE;
594 base->reify = 0;
595
596 ++base;
597 }
598}
599
600void inline_speed
601fd_event (EV_P_ int fd, int revents) 931fd_event_nocheck (EV_P_ int fd, int revents)
602{ 932{
603 ANFD *anfd = anfds + fd; 933 ANFD *anfd = anfds + fd;
604 ev_io *w; 934 ev_io *w;
605 935
606 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 936 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
610 if (ev) 940 if (ev)
611 ev_feed_event (EV_A_ (W)w, ev); 941 ev_feed_event (EV_A_ (W)w, ev);
612 } 942 }
613} 943}
614 944
945/* do not submit kernel events for fds that have reify set */
946/* because that means they changed while we were polling for new events */
947inline_speed void
948fd_event (EV_P_ int fd, int revents)
949{
950 ANFD *anfd = anfds + fd;
951
952 if (expect_true (!anfd->reify))
953 fd_event_nocheck (EV_A_ fd, revents);
954}
955
615void 956void
616ev_feed_fd_event (EV_P_ int fd, int revents) 957ev_feed_fd_event (EV_P_ int fd, int revents)
617{ 958{
618 if (fd >= 0 && fd < anfdmax) 959 if (fd >= 0 && fd < anfdmax)
619 fd_event (EV_A_ fd, revents); 960 fd_event_nocheck (EV_A_ fd, revents);
620} 961}
621 962
622void inline_size 963/* make sure the external fd watch events are in-sync */
964/* with the kernel/libev internal state */
965inline_size void
623fd_reify (EV_P) 966fd_reify (EV_P)
624{ 967{
625 int i; 968 int i;
626 969
627 for (i = 0; i < fdchangecnt; ++i) 970 for (i = 0; i < fdchangecnt; ++i)
628 { 971 {
629 int fd = fdchanges [i]; 972 int fd = fdchanges [i];
630 ANFD *anfd = anfds + fd; 973 ANFD *anfd = anfds + fd;
631 ev_io *w; 974 ev_io *w;
632 975
633 unsigned char events = 0; 976 unsigned char o_events = anfd->events;
977 unsigned char o_reify = anfd->reify;
634 978
635 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 979 anfd->reify = 0;
636 events |= (unsigned char)w->events;
637 980
638#if EV_SELECT_IS_WINSOCKET 981#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
639 if (events) 982 if (o_reify & EV__IOFDSET)
640 { 983 {
641 unsigned long argp; 984 unsigned long arg;
642 #ifdef EV_FD_TO_WIN32_HANDLE
643 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 985 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
644 #else
645 anfd->handle = _get_osfhandle (fd);
646 #endif
647 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 986 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
987 printf ("oi %d %x\n", fd, anfd->handle);//D
648 } 988 }
649#endif 989#endif
650 990
991 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
651 { 992 {
652 unsigned char o_events = anfd->events;
653 unsigned char o_reify = anfd->reify;
654
655 anfd->reify = 0;
656 anfd->events = events; 993 anfd->events = 0;
657 994
658 if (o_events != events || o_reify & EV_IOFDSET) 995 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
996 anfd->events |= (unsigned char)w->events;
997
998 if (o_events != anfd->events)
999 o_reify = EV__IOFDSET; /* actually |= */
1000 }
1001
1002 if (o_reify & EV__IOFDSET)
659 backend_modify (EV_A_ fd, o_events, events); 1003 backend_modify (EV_A_ fd, o_events, anfd->events);
660 }
661 } 1004 }
662 1005
663 fdchangecnt = 0; 1006 fdchangecnt = 0;
664} 1007}
665 1008
666void inline_size 1009/* something about the given fd changed */
1010inline_size void
667fd_change (EV_P_ int fd, int flags) 1011fd_change (EV_P_ int fd, int flags)
668{ 1012{
669 unsigned char reify = anfds [fd].reify; 1013 unsigned char reify = anfds [fd].reify;
670 anfds [fd].reify |= flags; 1014 anfds [fd].reify |= flags;
671 1015
… …
675 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1019 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
676 fdchanges [fdchangecnt - 1] = fd; 1020 fdchanges [fdchangecnt - 1] = fd;
677 } 1021 }
678} 1022}
679 1023
680void inline_speed 1024/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1025inline_speed void
681fd_kill (EV_P_ int fd) 1026fd_kill (EV_P_ int fd)
682{ 1027{
683 ev_io *w; 1028 ev_io *w;
684 1029
685 while ((w = (ev_io *)anfds [fd].head)) 1030 while ((w = (ev_io *)anfds [fd].head))
… …
687 ev_io_stop (EV_A_ w); 1032 ev_io_stop (EV_A_ w);
688 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1033 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
689 } 1034 }
690} 1035}
691 1036
692int inline_size 1037/* check whether the given fd is actually valid, for error recovery */
1038inline_size int
693fd_valid (int fd) 1039fd_valid (int fd)
694{ 1040{
695#ifdef _WIN32 1041#ifdef _WIN32
696 return _get_osfhandle (fd) != -1; 1042 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
697#else 1043#else
698 return fcntl (fd, F_GETFD) != -1; 1044 return fcntl (fd, F_GETFD) != -1;
699#endif 1045#endif
700} 1046}
701 1047
… …
705{ 1051{
706 int fd; 1052 int fd;
707 1053
708 for (fd = 0; fd < anfdmax; ++fd) 1054 for (fd = 0; fd < anfdmax; ++fd)
709 if (anfds [fd].events) 1055 if (anfds [fd].events)
710 if (!fd_valid (fd) == -1 && errno == EBADF) 1056 if (!fd_valid (fd) && errno == EBADF)
711 fd_kill (EV_A_ fd); 1057 fd_kill (EV_A_ fd);
712} 1058}
713 1059
714/* called on ENOMEM in select/poll to kill some fds and retry */ 1060/* called on ENOMEM in select/poll to kill some fds and retry */
715static void noinline 1061static void noinline
… …
719 1065
720 for (fd = anfdmax; fd--; ) 1066 for (fd = anfdmax; fd--; )
721 if (anfds [fd].events) 1067 if (anfds [fd].events)
722 { 1068 {
723 fd_kill (EV_A_ fd); 1069 fd_kill (EV_A_ fd);
724 return; 1070 break;
725 } 1071 }
726} 1072}
727 1073
728/* usually called after fork if backend needs to re-arm all fds from scratch */ 1074/* usually called after fork if backend needs to re-arm all fds from scratch */
729static void noinline 1075static void noinline
… …
733 1079
734 for (fd = 0; fd < anfdmax; ++fd) 1080 for (fd = 0; fd < anfdmax; ++fd)
735 if (anfds [fd].events) 1081 if (anfds [fd].events)
736 { 1082 {
737 anfds [fd].events = 0; 1083 anfds [fd].events = 0;
1084 anfds [fd].emask = 0;
738 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1085 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
739 } 1086 }
740} 1087}
741 1088
742/*****************************************************************************/ 1089/* used to prepare libev internal fd's */
743 1090/* this is not fork-safe */
744void inline_speed 1091inline_speed void
745upheap (WT *heap, int k)
746{
747 WT w = heap [k];
748
749 while (k)
750 {
751 int p = (k - 1) >> 1;
752
753 if (heap [p]->at <= w->at)
754 break;
755
756 heap [k] = heap [p];
757 ((W)heap [k])->active = k + 1;
758 k = p;
759 }
760
761 heap [k] = w;
762 ((W)heap [k])->active = k + 1;
763}
764
765void inline_speed
766downheap (WT *heap, int N, int k)
767{
768 WT w = heap [k];
769
770 for (;;)
771 {
772 int c = (k << 1) + 1;
773
774 if (c >= N)
775 break;
776
777 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
778 ? 1 : 0;
779
780 if (w->at <= heap [c]->at)
781 break;
782
783 heap [k] = heap [c];
784 ((W)heap [k])->active = k + 1;
785
786 k = c;
787 }
788
789 heap [k] = w;
790 ((W)heap [k])->active = k + 1;
791}
792
793void inline_size
794adjustheap (WT *heap, int N, int k)
795{
796 upheap (heap, k);
797 downheap (heap, N, k);
798}
799
800/*****************************************************************************/
801
802typedef struct
803{
804 WL head;
805 EV_ATOMIC_T gotsig;
806} ANSIG;
807
808static ANSIG *signals;
809static int signalmax;
810
811static EV_ATOMIC_T gotsig;
812
813void inline_size
814signals_init (ANSIG *base, int count)
815{
816 while (count--)
817 {
818 base->head = 0;
819 base->gotsig = 0;
820
821 ++base;
822 }
823}
824
825/*****************************************************************************/
826
827void inline_speed
828fd_intern (int fd) 1092fd_intern (int fd)
829{ 1093{
830#ifdef _WIN32 1094#ifdef _WIN32
831 int arg = 1; 1095 unsigned long arg = 1;
832 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1096 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
833#else 1097#else
834 fcntl (fd, F_SETFD, FD_CLOEXEC); 1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
835 fcntl (fd, F_SETFL, O_NONBLOCK); 1099 fcntl (fd, F_SETFL, O_NONBLOCK);
836#endif 1100#endif
837} 1101}
838 1102
1103/*****************************************************************************/
1104
1105/*
1106 * the heap functions want a real array index. array index 0 is guaranteed to not
1107 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1108 * the branching factor of the d-tree.
1109 */
1110
1111/*
1112 * at the moment we allow libev the luxury of two heaps,
1113 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1114 * which is more cache-efficient.
1115 * the difference is about 5% with 50000+ watchers.
1116 */
1117#if EV_USE_4HEAP
1118
1119#define DHEAP 4
1120#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1121#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1122#define UPHEAP_DONE(p,k) ((p) == (k))
1123
1124/* away from the root */
1125inline_speed void
1126downheap (ANHE *heap, int N, int k)
1127{
1128 ANHE he = heap [k];
1129 ANHE *E = heap + N + HEAP0;
1130
1131 for (;;)
1132 {
1133 ev_tstamp minat;
1134 ANHE *minpos;
1135 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1136
1137 /* find minimum child */
1138 if (expect_true (pos + DHEAP - 1 < E))
1139 {
1140 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1141 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1142 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1143 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1144 }
1145 else if (pos < E)
1146 {
1147 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1148 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1149 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1150 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1151 }
1152 else
1153 break;
1154
1155 if (ANHE_at (he) <= minat)
1156 break;
1157
1158 heap [k] = *minpos;
1159 ev_active (ANHE_w (*minpos)) = k;
1160
1161 k = minpos - heap;
1162 }
1163
1164 heap [k] = he;
1165 ev_active (ANHE_w (he)) = k;
1166}
1167
1168#else /* 4HEAP */
1169
1170#define HEAP0 1
1171#define HPARENT(k) ((k) >> 1)
1172#define UPHEAP_DONE(p,k) (!(p))
1173
1174/* away from the root */
1175inline_speed void
1176downheap (ANHE *heap, int N, int k)
1177{
1178 ANHE he = heap [k];
1179
1180 for (;;)
1181 {
1182 int c = k << 1;
1183
1184 if (c >= N + HEAP0)
1185 break;
1186
1187 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1188 ? 1 : 0;
1189
1190 if (ANHE_at (he) <= ANHE_at (heap [c]))
1191 break;
1192
1193 heap [k] = heap [c];
1194 ev_active (ANHE_w (heap [k])) = k;
1195
1196 k = c;
1197 }
1198
1199 heap [k] = he;
1200 ev_active (ANHE_w (he)) = k;
1201}
1202#endif
1203
1204/* towards the root */
1205inline_speed void
1206upheap (ANHE *heap, int k)
1207{
1208 ANHE he = heap [k];
1209
1210 for (;;)
1211 {
1212 int p = HPARENT (k);
1213
1214 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1215 break;
1216
1217 heap [k] = heap [p];
1218 ev_active (ANHE_w (heap [k])) = k;
1219 k = p;
1220 }
1221
1222 heap [k] = he;
1223 ev_active (ANHE_w (he)) = k;
1224}
1225
1226/* move an element suitably so it is in a correct place */
1227inline_size void
1228adjustheap (ANHE *heap, int N, int k)
1229{
1230 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1231 upheap (heap, k);
1232 else
1233 downheap (heap, N, k);
1234}
1235
1236/* rebuild the heap: this function is used only once and executed rarely */
1237inline_size void
1238reheap (ANHE *heap, int N)
1239{
1240 int i;
1241
1242 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1243 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1244 for (i = 0; i < N; ++i)
1245 upheap (heap, i + HEAP0);
1246}
1247
1248/*****************************************************************************/
1249
1250/* associate signal watchers to a signal signal */
1251typedef struct
1252{
1253 EV_ATOMIC_T pending;
1254#if EV_MULTIPLICITY
1255 EV_P;
1256#endif
1257 WL head;
1258} ANSIG;
1259
1260static ANSIG signals [EV_NSIG - 1];
1261
1262/*****************************************************************************/
1263
1264#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1265
839static void noinline 1266static void noinline
840evpipe_init (EV_P) 1267evpipe_init (EV_P)
841{ 1268{
842 if (!ev_is_active (&pipeev)) 1269 if (!ev_is_active (&pipe_w))
843 { 1270 {
844#if EV_USE_EVENTFD 1271# if EV_USE_EVENTFD
1272 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1273 if (evfd < 0 && errno == EINVAL)
845 if ((evfd = eventfd (0, 0)) >= 0) 1274 evfd = eventfd (0, 0);
1275
1276 if (evfd >= 0)
846 { 1277 {
847 evpipe [0] = -1; 1278 evpipe [0] = -1;
848 fd_intern (evfd); 1279 fd_intern (evfd); /* doing it twice doesn't hurt */
849 ev_io_set (&pipeev, evfd, EV_READ); 1280 ev_io_set (&pipe_w, evfd, EV_READ);
850 } 1281 }
851 else 1282 else
852#endif 1283# endif
853 { 1284 {
854 while (pipe (evpipe)) 1285 while (pipe (evpipe))
855 syserr ("(libev) error creating signal/async pipe"); 1286 ev_syserr ("(libev) error creating signal/async pipe");
856 1287
857 fd_intern (evpipe [0]); 1288 fd_intern (evpipe [0]);
858 fd_intern (evpipe [1]); 1289 fd_intern (evpipe [1]);
859 ev_io_set (&pipeev, evpipe [0], EV_READ); 1290 ev_io_set (&pipe_w, evpipe [0], EV_READ);
860 } 1291 }
861 1292
862 ev_io_start (EV_A_ &pipeev); 1293 ev_io_start (EV_A_ &pipe_w);
863 ev_unref (EV_A); /* watcher should not keep loop alive */ 1294 ev_unref (EV_A); /* watcher should not keep loop alive */
864 } 1295 }
865} 1296}
866 1297
867void inline_size 1298inline_size void
868evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1299evpipe_write (EV_P_ EV_ATOMIC_T *flag)
869{ 1300{
870 if (!*flag) 1301 if (!*flag)
871 { 1302 {
872 int old_errno = errno; /* save errno because write might clobber it */ 1303 int old_errno = errno; /* save errno because write might clobber it */
1304 char dummy;
873 1305
874 *flag = 1; 1306 *flag = 1;
875 1307
876#if EV_USE_EVENTFD 1308#if EV_USE_EVENTFD
877 if (evfd >= 0) 1309 if (evfd >= 0)
… …
879 uint64_t counter = 1; 1311 uint64_t counter = 1;
880 write (evfd, &counter, sizeof (uint64_t)); 1312 write (evfd, &counter, sizeof (uint64_t));
881 } 1313 }
882 else 1314 else
883#endif 1315#endif
1316 /* win32 people keep sending patches that change this write() to send() */
1317 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1318 /* so when you think this write should be a send instead, please find out */
1319 /* where your send() is from - it's definitely not the microsoft send, and */
1320 /* tell me. thank you. */
884 write (evpipe [1], &old_errno, 1); 1321 write (evpipe [1], &dummy, 1);
885 1322
886 errno = old_errno; 1323 errno = old_errno;
887 } 1324 }
888} 1325}
889 1326
1327/* called whenever the libev signal pipe */
1328/* got some events (signal, async) */
890static void 1329static void
891pipecb (EV_P_ ev_io *iow, int revents) 1330pipecb (EV_P_ ev_io *iow, int revents)
892{ 1331{
1332 int i;
1333
893#if EV_USE_EVENTFD 1334#if EV_USE_EVENTFD
894 if (evfd >= 0) 1335 if (evfd >= 0)
895 { 1336 {
896 uint64_t counter = 1; 1337 uint64_t counter;
897 read (evfd, &counter, sizeof (uint64_t)); 1338 read (evfd, &counter, sizeof (uint64_t));
898 } 1339 }
899 else 1340 else
900#endif 1341#endif
901 { 1342 {
902 char dummy; 1343 char dummy;
1344 /* see discussion in evpipe_write when you think this read should be recv in win32 */
903 read (evpipe [0], &dummy, 1); 1345 read (evpipe [0], &dummy, 1);
904 } 1346 }
905 1347
906 if (gotsig && ev_is_default_loop (EV_A)) 1348 if (sig_pending)
907 { 1349 {
908 int signum; 1350 sig_pending = 0;
909 gotsig = 0;
910 1351
911 for (signum = signalmax; signum--; ) 1352 for (i = EV_NSIG - 1; i--; )
912 if (signals [signum].gotsig) 1353 if (expect_false (signals [i].pending))
913 ev_feed_signal_event (EV_A_ signum + 1); 1354 ev_feed_signal_event (EV_A_ i + 1);
914 } 1355 }
915 1356
916#if EV_ASYNC_ENABLE 1357#if EV_ASYNC_ENABLE
917 if (gotasync) 1358 if (async_pending)
918 { 1359 {
919 int i; 1360 async_pending = 0;
920 gotasync = 0;
921 1361
922 for (i = asynccnt; i--; ) 1362 for (i = asynccnt; i--; )
923 if (asyncs [i]->sent) 1363 if (asyncs [i]->sent)
924 { 1364 {
925 asyncs [i]->sent = 0; 1365 asyncs [i]->sent = 0;
… …
929#endif 1369#endif
930} 1370}
931 1371
932/*****************************************************************************/ 1372/*****************************************************************************/
933 1373
1374void
1375ev_feed_signal (int signum)
1376{
1377#if EV_MULTIPLICITY
1378 EV_P = signals [signum - 1].loop;
1379
1380 if (!EV_A)
1381 return;
1382#endif
1383
1384 signals [signum - 1].pending = 1;
1385 evpipe_write (EV_A_ &sig_pending);
1386}
1387
934static void 1388static void
935ev_sighandler (int signum) 1389ev_sighandler (int signum)
936{ 1390{
937#if EV_MULTIPLICITY
938 struct ev_loop *loop = &default_loop_struct;
939#endif
940
941#if _WIN32 1391#ifdef _WIN32
942 signal (signum, ev_sighandler); 1392 signal (signum, ev_sighandler);
943#endif 1393#endif
944 1394
945 signals [signum - 1].gotsig = 1; 1395 ev_feed_signal (signum);
946 evpipe_write (EV_A_ &gotsig);
947} 1396}
948 1397
949void noinline 1398void noinline
950ev_feed_signal_event (EV_P_ int signum) 1399ev_feed_signal_event (EV_P_ int signum)
951{ 1400{
952 WL w; 1401 WL w;
953 1402
1403 if (expect_false (signum <= 0 || signum > EV_NSIG))
1404 return;
1405
1406 --signum;
1407
954#if EV_MULTIPLICITY 1408#if EV_MULTIPLICITY
955 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1409 /* it is permissible to try to feed a signal to the wrong loop */
956#endif 1410 /* or, likely more useful, feeding a signal nobody is waiting for */
957 1411
958 --signum; 1412 if (expect_false (signals [signum].loop != EV_A))
959
960 if (signum < 0 || signum >= signalmax)
961 return; 1413 return;
1414#endif
962 1415
963 signals [signum].gotsig = 0; 1416 signals [signum].pending = 0;
964 1417
965 for (w = signals [signum].head; w; w = w->next) 1418 for (w = signals [signum].head; w; w = w->next)
966 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1419 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
967} 1420}
968 1421
1422#if EV_USE_SIGNALFD
1423static void
1424sigfdcb (EV_P_ ev_io *iow, int revents)
1425{
1426 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1427
1428 for (;;)
1429 {
1430 ssize_t res = read (sigfd, si, sizeof (si));
1431
1432 /* not ISO-C, as res might be -1, but works with SuS */
1433 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1434 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1435
1436 if (res < (ssize_t)sizeof (si))
1437 break;
1438 }
1439}
1440#endif
1441
1442#endif
1443
969/*****************************************************************************/ 1444/*****************************************************************************/
970 1445
1446#if EV_CHILD_ENABLE
971static WL childs [EV_PID_HASHSIZE]; 1447static WL childs [EV_PID_HASHSIZE];
972
973#ifndef _WIN32
974 1448
975static ev_signal childev; 1449static ev_signal childev;
976 1450
977#ifndef WIFCONTINUED 1451#ifndef WIFCONTINUED
978# define WIFCONTINUED(status) 0 1452# define WIFCONTINUED(status) 0
979#endif 1453#endif
980 1454
981void inline_speed 1455/* handle a single child status event */
1456inline_speed void
982child_reap (EV_P_ int chain, int pid, int status) 1457child_reap (EV_P_ int chain, int pid, int status)
983{ 1458{
984 ev_child *w; 1459 ev_child *w;
985 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1460 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
986 1461
987 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1462 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
988 { 1463 {
989 if ((w->pid == pid || !w->pid) 1464 if ((w->pid == pid || !w->pid)
990 && (!traced || (w->flags & 1))) 1465 && (!traced || (w->flags & 1)))
991 { 1466 {
992 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1467 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
999 1474
1000#ifndef WCONTINUED 1475#ifndef WCONTINUED
1001# define WCONTINUED 0 1476# define WCONTINUED 0
1002#endif 1477#endif
1003 1478
1479/* called on sigchld etc., calls waitpid */
1004static void 1480static void
1005childcb (EV_P_ ev_signal *sw, int revents) 1481childcb (EV_P_ ev_signal *sw, int revents)
1006{ 1482{
1007 int pid, status; 1483 int pid, status;
1008 1484
… …
1016 /* make sure we are called again until all children have been reaped */ 1492 /* make sure we are called again until all children have been reaped */
1017 /* we need to do it this way so that the callback gets called before we continue */ 1493 /* we need to do it this way so that the callback gets called before we continue */
1018 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1494 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1019 1495
1020 child_reap (EV_A_ pid, pid, status); 1496 child_reap (EV_A_ pid, pid, status);
1021 if (EV_PID_HASHSIZE > 1) 1497 if ((EV_PID_HASHSIZE) > 1)
1022 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1498 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1023} 1499}
1024 1500
1025#endif 1501#endif
1026 1502
1027/*****************************************************************************/ 1503/*****************************************************************************/
1028 1504
1505#if EV_USE_IOCP
1506# include "ev_iocp.c"
1507#endif
1029#if EV_USE_PORT 1508#if EV_USE_PORT
1030# include "ev_port.c" 1509# include "ev_port.c"
1031#endif 1510#endif
1032#if EV_USE_KQUEUE 1511#if EV_USE_KQUEUE
1033# include "ev_kqueue.c" 1512# include "ev_kqueue.c"
… …
1089 /* kqueue is borked on everything but netbsd apparently */ 1568 /* kqueue is borked on everything but netbsd apparently */
1090 /* it usually doesn't work correctly on anything but sockets and pipes */ 1569 /* it usually doesn't work correctly on anything but sockets and pipes */
1091 flags &= ~EVBACKEND_KQUEUE; 1570 flags &= ~EVBACKEND_KQUEUE;
1092#endif 1571#endif
1093#ifdef __APPLE__ 1572#ifdef __APPLE__
1094 // flags &= ~EVBACKEND_KQUEUE; for documentation 1573 /* only select works correctly on that "unix-certified" platform */
1095 flags &= ~EVBACKEND_POLL; 1574 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1575 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1576#endif
1577#ifdef __FreeBSD__
1578 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1096#endif 1579#endif
1097 1580
1098 return flags; 1581 return flags;
1099} 1582}
1100 1583
… …
1102ev_embeddable_backends (void) 1585ev_embeddable_backends (void)
1103{ 1586{
1104 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1587 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1105 1588
1106 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1589 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1107 /* please fix it and tell me how to detect the fix */ 1590 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1108 flags &= ~EVBACKEND_EPOLL; 1591 flags &= ~EVBACKEND_EPOLL;
1109 1592
1110 return flags; 1593 return flags;
1111} 1594}
1112 1595
1113unsigned int 1596unsigned int
1114ev_backend (EV_P) 1597ev_backend (EV_P)
1115{ 1598{
1116 return backend; 1599 return backend;
1117} 1600}
1118 1601
1602#if EV_FEATURE_API
1119unsigned int 1603unsigned int
1120ev_loop_count (EV_P) 1604ev_iteration (EV_P)
1121{ 1605{
1122 return loop_count; 1606 return loop_count;
1123} 1607}
1124 1608
1609unsigned int
1610ev_depth (EV_P)
1611{
1612 return loop_depth;
1613}
1614
1125void 1615void
1126ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1616ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1127{ 1617{
1128 io_blocktime = interval; 1618 io_blocktime = interval;
1129} 1619}
… …
1132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1622ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1133{ 1623{
1134 timeout_blocktime = interval; 1624 timeout_blocktime = interval;
1135} 1625}
1136 1626
1627void
1628ev_set_userdata (EV_P_ void *data)
1629{
1630 userdata = data;
1631}
1632
1633void *
1634ev_userdata (EV_P)
1635{
1636 return userdata;
1637}
1638
1639void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1640{
1641 invoke_cb = invoke_pending_cb;
1642}
1643
1644void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1645{
1646 release_cb = release;
1647 acquire_cb = acquire;
1648}
1649#endif
1650
1651/* initialise a loop structure, must be zero-initialised */
1137static void noinline 1652static void noinline
1138loop_init (EV_P_ unsigned int flags) 1653loop_init (EV_P_ unsigned int flags)
1139{ 1654{
1140 if (!backend) 1655 if (!backend)
1141 { 1656 {
1657 origflags = flags;
1658
1659#if EV_USE_REALTIME
1660 if (!have_realtime)
1661 {
1662 struct timespec ts;
1663
1664 if (!clock_gettime (CLOCK_REALTIME, &ts))
1665 have_realtime = 1;
1666 }
1667#endif
1668
1142#if EV_USE_MONOTONIC 1669#if EV_USE_MONOTONIC
1670 if (!have_monotonic)
1143 { 1671 {
1144 struct timespec ts; 1672 struct timespec ts;
1673
1145 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1674 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1146 have_monotonic = 1; 1675 have_monotonic = 1;
1147 } 1676 }
1148#endif 1677#endif
1678
1679 /* pid check not overridable via env */
1680#ifndef _WIN32
1681 if (flags & EVFLAG_FORKCHECK)
1682 curpid = getpid ();
1683#endif
1684
1685 if (!(flags & EVFLAG_NOENV)
1686 && !enable_secure ()
1687 && getenv ("LIBEV_FLAGS"))
1688 flags = atoi (getenv ("LIBEV_FLAGS"));
1149 1689
1150 ev_rt_now = ev_time (); 1690 ev_rt_now = ev_time ();
1151 mn_now = get_clock (); 1691 mn_now = get_clock ();
1152 now_floor = mn_now; 1692 now_floor = mn_now;
1153 rtmn_diff = ev_rt_now - mn_now; 1693 rtmn_diff = ev_rt_now - mn_now;
1694#if EV_FEATURE_API
1695 invoke_cb = ev_invoke_pending;
1696#endif
1154 1697
1155 io_blocktime = 0.; 1698 io_blocktime = 0.;
1156 timeout_blocktime = 0.; 1699 timeout_blocktime = 0.;
1157 backend = 0; 1700 backend = 0;
1158 backend_fd = -1; 1701 backend_fd = -1;
1159 gotasync = 0; 1702 sig_pending = 0;
1703#if EV_ASYNC_ENABLE
1704 async_pending = 0;
1705#endif
1160#if EV_USE_INOTIFY 1706#if EV_USE_INOTIFY
1161 fs_fd = -2; 1707 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1162#endif 1708#endif
1163 1709#if EV_USE_SIGNALFD
1164 /* pid check not overridable via env */ 1710 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1165#ifndef _WIN32
1166 if (flags & EVFLAG_FORKCHECK)
1167 curpid = getpid ();
1168#endif 1711#endif
1169 1712
1170 if (!(flags & EVFLAG_NOENV) 1713 if (!(flags & EVBACKEND_MASK))
1171 && !enable_secure ()
1172 && getenv ("LIBEV_FLAGS"))
1173 flags = atoi (getenv ("LIBEV_FLAGS"));
1174
1175 if (!(flags & 0x0000ffffUL))
1176 flags |= ev_recommended_backends (); 1714 flags |= ev_recommended_backends ();
1177 1715
1716#if EV_USE_IOCP
1717 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1718#endif
1178#if EV_USE_PORT 1719#if EV_USE_PORT
1179 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1720 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1180#endif 1721#endif
1181#if EV_USE_KQUEUE 1722#if EV_USE_KQUEUE
1182 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1189#endif 1730#endif
1190#if EV_USE_SELECT 1731#if EV_USE_SELECT
1191 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1732 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1192#endif 1733#endif
1193 1734
1735 ev_prepare_init (&pending_w, pendingcb);
1736
1737#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1194 ev_init (&pipeev, pipecb); 1738 ev_init (&pipe_w, pipecb);
1195 ev_set_priority (&pipeev, EV_MAXPRI); 1739 ev_set_priority (&pipe_w, EV_MAXPRI);
1740#endif
1196 } 1741 }
1197} 1742}
1198 1743
1199static void noinline 1744/* free up a loop structure */
1745void
1200loop_destroy (EV_P) 1746ev_loop_destroy (EV_P)
1201{ 1747{
1202 int i; 1748 int i;
1203 1749
1750#if EV_MULTIPLICITY
1751 /* mimic free (0) */
1752 if (!EV_A)
1753 return;
1754#endif
1755
1756#if EV_CLEANUP_ENABLE
1757 /* queue cleanup watchers (and execute them) */
1758 if (expect_false (cleanupcnt))
1759 {
1760 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1761 EV_INVOKE_PENDING;
1762 }
1763#endif
1764
1765#if EV_CHILD_ENABLE
1766 if (ev_is_active (&childev))
1767 {
1768 ev_ref (EV_A); /* child watcher */
1769 ev_signal_stop (EV_A_ &childev);
1770 }
1771#endif
1772
1204 if (ev_is_active (&pipeev)) 1773 if (ev_is_active (&pipe_w))
1205 { 1774 {
1206 ev_ref (EV_A); /* signal watcher */ 1775 /*ev_ref (EV_A);*/
1207 ev_io_stop (EV_A_ &pipeev); 1776 /*ev_io_stop (EV_A_ &pipe_w);*/
1208 1777
1209#if EV_USE_EVENTFD 1778#if EV_USE_EVENTFD
1210 if (evfd >= 0) 1779 if (evfd >= 0)
1211 close (evfd); 1780 close (evfd);
1212#endif 1781#endif
1213 1782
1214 if (evpipe [0] >= 0) 1783 if (evpipe [0] >= 0)
1215 { 1784 {
1216 close (evpipe [0]); 1785 EV_WIN32_CLOSE_FD (evpipe [0]);
1217 close (evpipe [1]); 1786 EV_WIN32_CLOSE_FD (evpipe [1]);
1218 } 1787 }
1219 } 1788 }
1789
1790#if EV_USE_SIGNALFD
1791 if (ev_is_active (&sigfd_w))
1792 close (sigfd);
1793#endif
1220 1794
1221#if EV_USE_INOTIFY 1795#if EV_USE_INOTIFY
1222 if (fs_fd >= 0) 1796 if (fs_fd >= 0)
1223 close (fs_fd); 1797 close (fs_fd);
1224#endif 1798#endif
1225 1799
1226 if (backend_fd >= 0) 1800 if (backend_fd >= 0)
1227 close (backend_fd); 1801 close (backend_fd);
1228 1802
1803#if EV_USE_IOCP
1804 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1805#endif
1229#if EV_USE_PORT 1806#if EV_USE_PORT
1230 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1807 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1231#endif 1808#endif
1232#if EV_USE_KQUEUE 1809#if EV_USE_KQUEUE
1233 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1810 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1248#if EV_IDLE_ENABLE 1825#if EV_IDLE_ENABLE
1249 array_free (idle, [i]); 1826 array_free (idle, [i]);
1250#endif 1827#endif
1251 } 1828 }
1252 1829
1253 ev_free (anfds); anfdmax = 0; 1830 ev_free (anfds); anfds = 0; anfdmax = 0;
1254 1831
1255 /* have to use the microsoft-never-gets-it-right macro */ 1832 /* have to use the microsoft-never-gets-it-right macro */
1833 array_free (rfeed, EMPTY);
1256 array_free (fdchange, EMPTY); 1834 array_free (fdchange, EMPTY);
1257 array_free (timer, EMPTY); 1835 array_free (timer, EMPTY);
1258#if EV_PERIODIC_ENABLE 1836#if EV_PERIODIC_ENABLE
1259 array_free (periodic, EMPTY); 1837 array_free (periodic, EMPTY);
1260#endif 1838#endif
1261#if EV_FORK_ENABLE 1839#if EV_FORK_ENABLE
1262 array_free (fork, EMPTY); 1840 array_free (fork, EMPTY);
1263#endif 1841#endif
1842#if EV_CLEANUP_ENABLE
1843 array_free (cleanup, EMPTY);
1844#endif
1264 array_free (prepare, EMPTY); 1845 array_free (prepare, EMPTY);
1265 array_free (check, EMPTY); 1846 array_free (check, EMPTY);
1266#if EV_ASYNC_ENABLE 1847#if EV_ASYNC_ENABLE
1267 array_free (async, EMPTY); 1848 array_free (async, EMPTY);
1268#endif 1849#endif
1269 1850
1270 backend = 0; 1851 backend = 0;
1271}
1272 1852
1853#if EV_MULTIPLICITY
1854 if (ev_is_default_loop (EV_A))
1855#endif
1856 ev_default_loop_ptr = 0;
1857#if EV_MULTIPLICITY
1858 else
1859 ev_free (EV_A);
1860#endif
1861}
1862
1863#if EV_USE_INOTIFY
1273void inline_size infy_fork (EV_P); 1864inline_size void infy_fork (EV_P);
1865#endif
1274 1866
1275void inline_size 1867inline_size void
1276loop_fork (EV_P) 1868loop_fork (EV_P)
1277{ 1869{
1278#if EV_USE_PORT 1870#if EV_USE_PORT
1279 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1871 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1280#endif 1872#endif
… …
1286#endif 1878#endif
1287#if EV_USE_INOTIFY 1879#if EV_USE_INOTIFY
1288 infy_fork (EV_A); 1880 infy_fork (EV_A);
1289#endif 1881#endif
1290 1882
1291 if (ev_is_active (&pipeev)) 1883 if (ev_is_active (&pipe_w))
1292 { 1884 {
1293 /* this "locks" the handlers against writing to the pipe */ 1885 /* this "locks" the handlers against writing to the pipe */
1294 /* while we modify the fd vars */ 1886 /* while we modify the fd vars */
1295 gotsig = 1; 1887 sig_pending = 1;
1296#if EV_ASYNC_ENABLE 1888#if EV_ASYNC_ENABLE
1297 gotasync = 1; 1889 async_pending = 1;
1298#endif 1890#endif
1299 1891
1300 ev_ref (EV_A); 1892 ev_ref (EV_A);
1301 ev_io_stop (EV_A_ &pipeev); 1893 ev_io_stop (EV_A_ &pipe_w);
1302 1894
1303#if EV_USE_EVENTFD 1895#if EV_USE_EVENTFD
1304 if (evfd >= 0) 1896 if (evfd >= 0)
1305 close (evfd); 1897 close (evfd);
1306#endif 1898#endif
1307 1899
1308 if (evpipe [0] >= 0) 1900 if (evpipe [0] >= 0)
1309 { 1901 {
1310 close (evpipe [0]); 1902 EV_WIN32_CLOSE_FD (evpipe [0]);
1311 close (evpipe [1]); 1903 EV_WIN32_CLOSE_FD (evpipe [1]);
1312 } 1904 }
1313 1905
1906#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1314 evpipe_init (EV_A); 1907 evpipe_init (EV_A);
1315 /* now iterate over everything, in case we missed something */ 1908 /* now iterate over everything, in case we missed something */
1316 pipecb (EV_A_ &pipeev, EV_READ); 1909 pipecb (EV_A_ &pipe_w, EV_READ);
1910#endif
1317 } 1911 }
1318 1912
1319 postfork = 0; 1913 postfork = 0;
1320} 1914}
1915
1916#if EV_MULTIPLICITY
1917
1918struct ev_loop *
1919ev_loop_new (unsigned int flags)
1920{
1921 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1922
1923 memset (EV_A, 0, sizeof (struct ev_loop));
1924 loop_init (EV_A_ flags);
1925
1926 if (ev_backend (EV_A))
1927 return EV_A;
1928
1929 ev_free (EV_A);
1930 return 0;
1931}
1932
1933#endif /* multiplicity */
1934
1935#if EV_VERIFY
1936static void noinline
1937verify_watcher (EV_P_ W w)
1938{
1939 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1940
1941 if (w->pending)
1942 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1943}
1944
1945static void noinline
1946verify_heap (EV_P_ ANHE *heap, int N)
1947{
1948 int i;
1949
1950 for (i = HEAP0; i < N + HEAP0; ++i)
1951 {
1952 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1953 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1954 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1955
1956 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1957 }
1958}
1959
1960static void noinline
1961array_verify (EV_P_ W *ws, int cnt)
1962{
1963 while (cnt--)
1964 {
1965 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1966 verify_watcher (EV_A_ ws [cnt]);
1967 }
1968}
1969#endif
1970
1971#if EV_FEATURE_API
1972void
1973ev_verify (EV_P)
1974{
1975#if EV_VERIFY
1976 int i;
1977 WL w;
1978
1979 assert (activecnt >= -1);
1980
1981 assert (fdchangemax >= fdchangecnt);
1982 for (i = 0; i < fdchangecnt; ++i)
1983 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1984
1985 assert (anfdmax >= 0);
1986 for (i = 0; i < anfdmax; ++i)
1987 for (w = anfds [i].head; w; w = w->next)
1988 {
1989 verify_watcher (EV_A_ (W)w);
1990 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1991 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1992 }
1993
1994 assert (timermax >= timercnt);
1995 verify_heap (EV_A_ timers, timercnt);
1996
1997#if EV_PERIODIC_ENABLE
1998 assert (periodicmax >= periodiccnt);
1999 verify_heap (EV_A_ periodics, periodiccnt);
2000#endif
2001
2002 for (i = NUMPRI; i--; )
2003 {
2004 assert (pendingmax [i] >= pendingcnt [i]);
2005#if EV_IDLE_ENABLE
2006 assert (idleall >= 0);
2007 assert (idlemax [i] >= idlecnt [i]);
2008 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2009#endif
2010 }
2011
2012#if EV_FORK_ENABLE
2013 assert (forkmax >= forkcnt);
2014 array_verify (EV_A_ (W *)forks, forkcnt);
2015#endif
2016
2017#if EV_CLEANUP_ENABLE
2018 assert (cleanupmax >= cleanupcnt);
2019 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2020#endif
2021
2022#if EV_ASYNC_ENABLE
2023 assert (asyncmax >= asynccnt);
2024 array_verify (EV_A_ (W *)asyncs, asynccnt);
2025#endif
2026
2027#if EV_PREPARE_ENABLE
2028 assert (preparemax >= preparecnt);
2029 array_verify (EV_A_ (W *)prepares, preparecnt);
2030#endif
2031
2032#if EV_CHECK_ENABLE
2033 assert (checkmax >= checkcnt);
2034 array_verify (EV_A_ (W *)checks, checkcnt);
2035#endif
2036
2037# if 0
2038#if EV_CHILD_ENABLE
2039 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2040 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2041#endif
2042# endif
2043#endif
2044}
2045#endif
1321 2046
1322#if EV_MULTIPLICITY 2047#if EV_MULTIPLICITY
1323struct ev_loop * 2048struct ev_loop *
1324ev_loop_new (unsigned int flags)
1325{
1326 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1327
1328 memset (loop, 0, sizeof (struct ev_loop));
1329
1330 loop_init (EV_A_ flags);
1331
1332 if (ev_backend (EV_A))
1333 return loop;
1334
1335 return 0;
1336}
1337
1338void
1339ev_loop_destroy (EV_P)
1340{
1341 loop_destroy (EV_A);
1342 ev_free (loop);
1343}
1344
1345void
1346ev_loop_fork (EV_P)
1347{
1348 postfork = 1; /* must be in line with ev_default_fork */
1349}
1350
1351#endif
1352
1353#if EV_MULTIPLICITY
1354struct ev_loop *
1355ev_default_loop_init (unsigned int flags)
1356#else 2049#else
1357int 2050int
2051#endif
1358ev_default_loop (unsigned int flags) 2052ev_default_loop (unsigned int flags)
1359#endif
1360{ 2053{
1361 if (!ev_default_loop_ptr) 2054 if (!ev_default_loop_ptr)
1362 { 2055 {
1363#if EV_MULTIPLICITY 2056#if EV_MULTIPLICITY
1364 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2057 EV_P = ev_default_loop_ptr = &default_loop_struct;
1365#else 2058#else
1366 ev_default_loop_ptr = 1; 2059 ev_default_loop_ptr = 1;
1367#endif 2060#endif
1368 2061
1369 loop_init (EV_A_ flags); 2062 loop_init (EV_A_ flags);
1370 2063
1371 if (ev_backend (EV_A)) 2064 if (ev_backend (EV_A))
1372 { 2065 {
1373#ifndef _WIN32 2066#if EV_CHILD_ENABLE
1374 ev_signal_init (&childev, childcb, SIGCHLD); 2067 ev_signal_init (&childev, childcb, SIGCHLD);
1375 ev_set_priority (&childev, EV_MAXPRI); 2068 ev_set_priority (&childev, EV_MAXPRI);
1376 ev_signal_start (EV_A_ &childev); 2069 ev_signal_start (EV_A_ &childev);
1377 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2070 ev_unref (EV_A); /* child watcher should not keep loop alive */
1378#endif 2071#endif
… …
1383 2076
1384 return ev_default_loop_ptr; 2077 return ev_default_loop_ptr;
1385} 2078}
1386 2079
1387void 2080void
1388ev_default_destroy (void) 2081ev_loop_fork (EV_P)
1389{ 2082{
1390#if EV_MULTIPLICITY
1391 struct ev_loop *loop = ev_default_loop_ptr;
1392#endif
1393
1394#ifndef _WIN32
1395 ev_ref (EV_A); /* child watcher */
1396 ev_signal_stop (EV_A_ &childev);
1397#endif
1398
1399 loop_destroy (EV_A);
1400}
1401
1402void
1403ev_default_fork (void)
1404{
1405#if EV_MULTIPLICITY
1406 struct ev_loop *loop = ev_default_loop_ptr;
1407#endif
1408
1409 if (backend)
1410 postfork = 1; /* must be in line with ev_loop_fork */ 2083 postfork = 1; /* must be in line with ev_default_fork */
1411} 2084}
1412 2085
1413/*****************************************************************************/ 2086/*****************************************************************************/
1414 2087
1415void 2088void
1416ev_invoke (EV_P_ void *w, int revents) 2089ev_invoke (EV_P_ void *w, int revents)
1417{ 2090{
1418 EV_CB_INVOKE ((W)w, revents); 2091 EV_CB_INVOKE ((W)w, revents);
1419} 2092}
1420 2093
1421void inline_speed 2094unsigned int
1422call_pending (EV_P) 2095ev_pending_count (EV_P)
2096{
2097 int pri;
2098 unsigned int count = 0;
2099
2100 for (pri = NUMPRI; pri--; )
2101 count += pendingcnt [pri];
2102
2103 return count;
2104}
2105
2106void noinline
2107ev_invoke_pending (EV_P)
1423{ 2108{
1424 int pri; 2109 int pri;
1425 2110
1426 for (pri = NUMPRI; pri--; ) 2111 for (pri = NUMPRI; pri--; )
1427 while (pendingcnt [pri]) 2112 while (pendingcnt [pri])
1428 { 2113 {
1429 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2114 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1430 2115
1431 if (expect_true (p->w))
1432 {
1433 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2116 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2117 /* ^ this is no longer true, as pending_w could be here */
1434 2118
1435 p->w->pending = 0; 2119 p->w->pending = 0;
1436 EV_CB_INVOKE (p->w, p->events); 2120 EV_CB_INVOKE (p->w, p->events);
1437 } 2121 EV_FREQUENT_CHECK;
1438 } 2122 }
1439} 2123}
1440 2124
1441void inline_size
1442timers_reify (EV_P)
1443{
1444 while (timercnt && ((WT)timers [0])->at <= mn_now)
1445 {
1446 ev_timer *w = (ev_timer *)timers [0];
1447
1448 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1449
1450 /* first reschedule or stop timer */
1451 if (w->repeat)
1452 {
1453 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1454
1455 ((WT)w)->at += w->repeat;
1456 if (((WT)w)->at < mn_now)
1457 ((WT)w)->at = mn_now;
1458
1459 downheap (timers, timercnt, 0);
1460 }
1461 else
1462 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1463
1464 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1465 }
1466}
1467
1468#if EV_PERIODIC_ENABLE
1469void inline_size
1470periodics_reify (EV_P)
1471{
1472 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1473 {
1474 ev_periodic *w = (ev_periodic *)periodics [0];
1475
1476 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1477
1478 /* first reschedule or stop timer */
1479 if (w->reschedule_cb)
1480 {
1481 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1482 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1483 downheap (periodics, periodiccnt, 0);
1484 }
1485 else if (w->interval)
1486 {
1487 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1488 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1489 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1490 downheap (periodics, periodiccnt, 0);
1491 }
1492 else
1493 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1494
1495 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1496 }
1497}
1498
1499static void noinline
1500periodics_reschedule (EV_P)
1501{
1502 int i;
1503
1504 /* adjust periodics after time jump */
1505 for (i = 0; i < periodiccnt; ++i)
1506 {
1507 ev_periodic *w = (ev_periodic *)periodics [i];
1508
1509 if (w->reschedule_cb)
1510 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1511 else if (w->interval)
1512 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1513 }
1514
1515 /* now rebuild the heap */
1516 for (i = periodiccnt >> 1; i--; )
1517 downheap (periodics, periodiccnt, i);
1518}
1519#endif
1520
1521#if EV_IDLE_ENABLE 2125#if EV_IDLE_ENABLE
1522void inline_size 2126/* make idle watchers pending. this handles the "call-idle */
2127/* only when higher priorities are idle" logic */
2128inline_size void
1523idle_reify (EV_P) 2129idle_reify (EV_P)
1524{ 2130{
1525 if (expect_false (idleall)) 2131 if (expect_false (idleall))
1526 { 2132 {
1527 int pri; 2133 int pri;
… …
1539 } 2145 }
1540 } 2146 }
1541} 2147}
1542#endif 2148#endif
1543 2149
1544void inline_speed 2150/* make timers pending */
2151inline_size void
2152timers_reify (EV_P)
2153{
2154 EV_FREQUENT_CHECK;
2155
2156 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2157 {
2158 do
2159 {
2160 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2161
2162 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2163
2164 /* first reschedule or stop timer */
2165 if (w->repeat)
2166 {
2167 ev_at (w) += w->repeat;
2168 if (ev_at (w) < mn_now)
2169 ev_at (w) = mn_now;
2170
2171 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2172
2173 ANHE_at_cache (timers [HEAP0]);
2174 downheap (timers, timercnt, HEAP0);
2175 }
2176 else
2177 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2178
2179 EV_FREQUENT_CHECK;
2180 feed_reverse (EV_A_ (W)w);
2181 }
2182 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2183
2184 feed_reverse_done (EV_A_ EV_TIMER);
2185 }
2186}
2187
2188#if EV_PERIODIC_ENABLE
2189/* make periodics pending */
2190inline_size void
2191periodics_reify (EV_P)
2192{
2193 EV_FREQUENT_CHECK;
2194
2195 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2196 {
2197 int feed_count = 0;
2198
2199 do
2200 {
2201 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2202
2203 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2204
2205 /* first reschedule or stop timer */
2206 if (w->reschedule_cb)
2207 {
2208 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2209
2210 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2211
2212 ANHE_at_cache (periodics [HEAP0]);
2213 downheap (periodics, periodiccnt, HEAP0);
2214 }
2215 else if (w->interval)
2216 {
2217 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2218 /* if next trigger time is not sufficiently in the future, put it there */
2219 /* this might happen because of floating point inexactness */
2220 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2221 {
2222 ev_at (w) += w->interval;
2223
2224 /* if interval is unreasonably low we might still have a time in the past */
2225 /* so correct this. this will make the periodic very inexact, but the user */
2226 /* has effectively asked to get triggered more often than possible */
2227 if (ev_at (w) < ev_rt_now)
2228 ev_at (w) = ev_rt_now;
2229 }
2230
2231 ANHE_at_cache (periodics [HEAP0]);
2232 downheap (periodics, periodiccnt, HEAP0);
2233 }
2234 else
2235 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2236
2237 EV_FREQUENT_CHECK;
2238 feed_reverse (EV_A_ (W)w);
2239 }
2240 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2241
2242 feed_reverse_done (EV_A_ EV_PERIODIC);
2243 }
2244}
2245
2246/* simply recalculate all periodics */
2247/* TODO: maybe ensure that at least one event happens when jumping forward? */
2248static void noinline
2249periodics_reschedule (EV_P)
2250{
2251 int i;
2252
2253 /* adjust periodics after time jump */
2254 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2255 {
2256 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2257
2258 if (w->reschedule_cb)
2259 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2260 else if (w->interval)
2261 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2262
2263 ANHE_at_cache (periodics [i]);
2264 }
2265
2266 reheap (periodics, periodiccnt);
2267}
2268#endif
2269
2270/* adjust all timers by a given offset */
2271static void noinline
2272timers_reschedule (EV_P_ ev_tstamp adjust)
2273{
2274 int i;
2275
2276 for (i = 0; i < timercnt; ++i)
2277 {
2278 ANHE *he = timers + i + HEAP0;
2279 ANHE_w (*he)->at += adjust;
2280 ANHE_at_cache (*he);
2281 }
2282}
2283
2284/* fetch new monotonic and realtime times from the kernel */
2285/* also detect if there was a timejump, and act accordingly */
2286inline_speed void
1545time_update (EV_P_ ev_tstamp max_block) 2287time_update (EV_P_ ev_tstamp max_block)
1546{ 2288{
1547 int i;
1548
1549#if EV_USE_MONOTONIC 2289#if EV_USE_MONOTONIC
1550 if (expect_true (have_monotonic)) 2290 if (expect_true (have_monotonic))
1551 { 2291 {
2292 int i;
1552 ev_tstamp odiff = rtmn_diff; 2293 ev_tstamp odiff = rtmn_diff;
1553 2294
1554 mn_now = get_clock (); 2295 mn_now = get_clock ();
1555 2296
1556 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2297 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1574 */ 2315 */
1575 for (i = 4; --i; ) 2316 for (i = 4; --i; )
1576 { 2317 {
1577 rtmn_diff = ev_rt_now - mn_now; 2318 rtmn_diff = ev_rt_now - mn_now;
1578 2319
1579 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2320 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1580 return; /* all is well */ 2321 return; /* all is well */
1581 2322
1582 ev_rt_now = ev_time (); 2323 ev_rt_now = ev_time ();
1583 mn_now = get_clock (); 2324 mn_now = get_clock ();
1584 now_floor = mn_now; 2325 now_floor = mn_now;
1585 } 2326 }
1586 2327
2328 /* no timer adjustment, as the monotonic clock doesn't jump */
2329 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1587# if EV_PERIODIC_ENABLE 2330# if EV_PERIODIC_ENABLE
1588 periodics_reschedule (EV_A); 2331 periodics_reschedule (EV_A);
1589# endif 2332# endif
1590 /* no timer adjustment, as the monotonic clock doesn't jump */
1591 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1592 } 2333 }
1593 else 2334 else
1594#endif 2335#endif
1595 { 2336 {
1596 ev_rt_now = ev_time (); 2337 ev_rt_now = ev_time ();
1597 2338
1598 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2339 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1599 { 2340 {
2341 /* adjust timers. this is easy, as the offset is the same for all of them */
2342 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1600#if EV_PERIODIC_ENABLE 2343#if EV_PERIODIC_ENABLE
1601 periodics_reschedule (EV_A); 2344 periodics_reschedule (EV_A);
1602#endif 2345#endif
1603 /* adjust timers. this is easy, as the offset is the same for all of them */
1604 for (i = 0; i < timercnt; ++i)
1605 ((WT)timers [i])->at += ev_rt_now - mn_now;
1606 } 2346 }
1607 2347
1608 mn_now = ev_rt_now; 2348 mn_now = ev_rt_now;
1609 } 2349 }
1610} 2350}
1611 2351
1612void 2352void
1613ev_ref (EV_P)
1614{
1615 ++activecnt;
1616}
1617
1618void
1619ev_unref (EV_P)
1620{
1621 --activecnt;
1622}
1623
1624static int loop_done;
1625
1626void
1627ev_loop (EV_P_ int flags) 2353ev_run (EV_P_ int flags)
1628{ 2354{
2355#if EV_FEATURE_API
2356 ++loop_depth;
2357#endif
2358
2359 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2360
1629 loop_done = EVUNLOOP_CANCEL; 2361 loop_done = EVBREAK_CANCEL;
1630 2362
1631 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2363 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1632 2364
1633 do 2365 do
1634 { 2366 {
2367#if EV_VERIFY >= 2
2368 ev_verify (EV_A);
2369#endif
2370
1635#ifndef _WIN32 2371#ifndef _WIN32
1636 if (expect_false (curpid)) /* penalise the forking check even more */ 2372 if (expect_false (curpid)) /* penalise the forking check even more */
1637 if (expect_false (getpid () != curpid)) 2373 if (expect_false (getpid () != curpid))
1638 { 2374 {
1639 curpid = getpid (); 2375 curpid = getpid ();
… …
1645 /* we might have forked, so queue fork handlers */ 2381 /* we might have forked, so queue fork handlers */
1646 if (expect_false (postfork)) 2382 if (expect_false (postfork))
1647 if (forkcnt) 2383 if (forkcnt)
1648 { 2384 {
1649 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2385 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1650 call_pending (EV_A); 2386 EV_INVOKE_PENDING;
1651 } 2387 }
1652#endif 2388#endif
1653 2389
2390#if EV_PREPARE_ENABLE
1654 /* queue prepare watchers (and execute them) */ 2391 /* queue prepare watchers (and execute them) */
1655 if (expect_false (preparecnt)) 2392 if (expect_false (preparecnt))
1656 { 2393 {
1657 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2394 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1658 call_pending (EV_A); 2395 EV_INVOKE_PENDING;
1659 } 2396 }
2397#endif
1660 2398
1661 if (expect_false (!activecnt)) 2399 if (expect_false (loop_done))
1662 break; 2400 break;
1663 2401
1664 /* we might have forked, so reify kernel state if necessary */ 2402 /* we might have forked, so reify kernel state if necessary */
1665 if (expect_false (postfork)) 2403 if (expect_false (postfork))
1666 loop_fork (EV_A); 2404 loop_fork (EV_A);
… …
1671 /* calculate blocking time */ 2409 /* calculate blocking time */
1672 { 2410 {
1673 ev_tstamp waittime = 0.; 2411 ev_tstamp waittime = 0.;
1674 ev_tstamp sleeptime = 0.; 2412 ev_tstamp sleeptime = 0.;
1675 2413
2414 /* remember old timestamp for io_blocktime calculation */
2415 ev_tstamp prev_mn_now = mn_now;
2416
2417 /* update time to cancel out callback processing overhead */
2418 time_update (EV_A_ 1e100);
2419
1676 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2420 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1677 { 2421 {
1678 /* update time to cancel out callback processing overhead */
1679 time_update (EV_A_ 1e100);
1680
1681 waittime = MAX_BLOCKTIME; 2422 waittime = MAX_BLOCKTIME;
1682 2423
1683 if (timercnt) 2424 if (timercnt)
1684 { 2425 {
1685 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2426 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1686 if (waittime > to) waittime = to; 2427 if (waittime > to) waittime = to;
1687 } 2428 }
1688 2429
1689#if EV_PERIODIC_ENABLE 2430#if EV_PERIODIC_ENABLE
1690 if (periodiccnt) 2431 if (periodiccnt)
1691 { 2432 {
1692 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2433 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1693 if (waittime > to) waittime = to; 2434 if (waittime > to) waittime = to;
1694 } 2435 }
1695#endif 2436#endif
1696 2437
2438 /* don't let timeouts decrease the waittime below timeout_blocktime */
1697 if (expect_false (waittime < timeout_blocktime)) 2439 if (expect_false (waittime < timeout_blocktime))
1698 waittime = timeout_blocktime; 2440 waittime = timeout_blocktime;
1699 2441
1700 sleeptime = waittime - backend_fudge; 2442 /* extra check because io_blocktime is commonly 0 */
1701
1702 if (expect_true (sleeptime > io_blocktime)) 2443 if (expect_false (io_blocktime))
1703 sleeptime = io_blocktime;
1704
1705 if (sleeptime)
1706 { 2444 {
2445 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2446
2447 if (sleeptime > waittime - backend_fudge)
2448 sleeptime = waittime - backend_fudge;
2449
2450 if (expect_true (sleeptime > 0.))
2451 {
1707 ev_sleep (sleeptime); 2452 ev_sleep (sleeptime);
1708 waittime -= sleeptime; 2453 waittime -= sleeptime;
2454 }
1709 } 2455 }
1710 } 2456 }
1711 2457
2458#if EV_FEATURE_API
1712 ++loop_count; 2459 ++loop_count;
2460#endif
2461 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1713 backend_poll (EV_A_ waittime); 2462 backend_poll (EV_A_ waittime);
2463 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1714 2464
1715 /* update ev_rt_now, do magic */ 2465 /* update ev_rt_now, do magic */
1716 time_update (EV_A_ waittime + sleeptime); 2466 time_update (EV_A_ waittime + sleeptime);
1717 } 2467 }
1718 2468
… …
1725#if EV_IDLE_ENABLE 2475#if EV_IDLE_ENABLE
1726 /* queue idle watchers unless other events are pending */ 2476 /* queue idle watchers unless other events are pending */
1727 idle_reify (EV_A); 2477 idle_reify (EV_A);
1728#endif 2478#endif
1729 2479
2480#if EV_CHECK_ENABLE
1730 /* queue check watchers, to be executed first */ 2481 /* queue check watchers, to be executed first */
1731 if (expect_false (checkcnt)) 2482 if (expect_false (checkcnt))
1732 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2483 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2484#endif
1733 2485
1734 call_pending (EV_A); 2486 EV_INVOKE_PENDING;
1735 } 2487 }
1736 while (expect_true ( 2488 while (expect_true (
1737 activecnt 2489 activecnt
1738 && !loop_done 2490 && !loop_done
1739 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2491 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1740 )); 2492 ));
1741 2493
1742 if (loop_done == EVUNLOOP_ONE) 2494 if (loop_done == EVBREAK_ONE)
1743 loop_done = EVUNLOOP_CANCEL; 2495 loop_done = EVBREAK_CANCEL;
1744}
1745 2496
2497#if EV_FEATURE_API
2498 --loop_depth;
2499#endif
2500}
2501
1746void 2502void
1747ev_unloop (EV_P_ int how) 2503ev_break (EV_P_ int how)
1748{ 2504{
1749 loop_done = how; 2505 loop_done = how;
1750} 2506}
1751 2507
2508void
2509ev_ref (EV_P)
2510{
2511 ++activecnt;
2512}
2513
2514void
2515ev_unref (EV_P)
2516{
2517 --activecnt;
2518}
2519
2520void
2521ev_now_update (EV_P)
2522{
2523 time_update (EV_A_ 1e100);
2524}
2525
2526void
2527ev_suspend (EV_P)
2528{
2529 ev_now_update (EV_A);
2530}
2531
2532void
2533ev_resume (EV_P)
2534{
2535 ev_tstamp mn_prev = mn_now;
2536
2537 ev_now_update (EV_A);
2538 timers_reschedule (EV_A_ mn_now - mn_prev);
2539#if EV_PERIODIC_ENABLE
2540 /* TODO: really do this? */
2541 periodics_reschedule (EV_A);
2542#endif
2543}
2544
1752/*****************************************************************************/ 2545/*****************************************************************************/
2546/* singly-linked list management, used when the expected list length is short */
1753 2547
1754void inline_size 2548inline_size void
1755wlist_add (WL *head, WL elem) 2549wlist_add (WL *head, WL elem)
1756{ 2550{
1757 elem->next = *head; 2551 elem->next = *head;
1758 *head = elem; 2552 *head = elem;
1759} 2553}
1760 2554
1761void inline_size 2555inline_size void
1762wlist_del (WL *head, WL elem) 2556wlist_del (WL *head, WL elem)
1763{ 2557{
1764 while (*head) 2558 while (*head)
1765 { 2559 {
1766 if (*head == elem) 2560 if (expect_true (*head == elem))
1767 { 2561 {
1768 *head = elem->next; 2562 *head = elem->next;
1769 return; 2563 break;
1770 } 2564 }
1771 2565
1772 head = &(*head)->next; 2566 head = &(*head)->next;
1773 } 2567 }
1774} 2568}
1775 2569
1776void inline_speed 2570/* internal, faster, version of ev_clear_pending */
2571inline_speed void
1777clear_pending (EV_P_ W w) 2572clear_pending (EV_P_ W w)
1778{ 2573{
1779 if (w->pending) 2574 if (w->pending)
1780 { 2575 {
1781 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2576 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1782 w->pending = 0; 2577 w->pending = 0;
1783 } 2578 }
1784} 2579}
1785 2580
1786int 2581int
… …
1790 int pending = w_->pending; 2585 int pending = w_->pending;
1791 2586
1792 if (expect_true (pending)) 2587 if (expect_true (pending))
1793 { 2588 {
1794 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2589 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2590 p->w = (W)&pending_w;
1795 w_->pending = 0; 2591 w_->pending = 0;
1796 p->w = 0;
1797 return p->events; 2592 return p->events;
1798 } 2593 }
1799 else 2594 else
1800 return 0; 2595 return 0;
1801} 2596}
1802 2597
1803void inline_size 2598inline_size void
1804pri_adjust (EV_P_ W w) 2599pri_adjust (EV_P_ W w)
1805{ 2600{
1806 int pri = w->priority; 2601 int pri = ev_priority (w);
1807 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2602 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1808 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2603 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1809 w->priority = pri; 2604 ev_set_priority (w, pri);
1810} 2605}
1811 2606
1812void inline_speed 2607inline_speed void
1813ev_start (EV_P_ W w, int active) 2608ev_start (EV_P_ W w, int active)
1814{ 2609{
1815 pri_adjust (EV_A_ w); 2610 pri_adjust (EV_A_ w);
1816 w->active = active; 2611 w->active = active;
1817 ev_ref (EV_A); 2612 ev_ref (EV_A);
1818} 2613}
1819 2614
1820void inline_size 2615inline_size void
1821ev_stop (EV_P_ W w) 2616ev_stop (EV_P_ W w)
1822{ 2617{
1823 ev_unref (EV_A); 2618 ev_unref (EV_A);
1824 w->active = 0; 2619 w->active = 0;
1825} 2620}
… …
1832 int fd = w->fd; 2627 int fd = w->fd;
1833 2628
1834 if (expect_false (ev_is_active (w))) 2629 if (expect_false (ev_is_active (w)))
1835 return; 2630 return;
1836 2631
1837 assert (("ev_io_start called with negative fd", fd >= 0)); 2632 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2633 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2634
2635 EV_FREQUENT_CHECK;
1838 2636
1839 ev_start (EV_A_ (W)w, 1); 2637 ev_start (EV_A_ (W)w, 1);
1840 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2638 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1841 wlist_add (&anfds[fd].head, (WL)w); 2639 wlist_add (&anfds[fd].head, (WL)w);
1842 2640
1843 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2641 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1844 w->events &= ~EV_IOFDSET; 2642 w->events &= ~EV__IOFDSET;
2643
2644 EV_FREQUENT_CHECK;
1845} 2645}
1846 2646
1847void noinline 2647void noinline
1848ev_io_stop (EV_P_ ev_io *w) 2648ev_io_stop (EV_P_ ev_io *w)
1849{ 2649{
1850 clear_pending (EV_A_ (W)w); 2650 clear_pending (EV_A_ (W)w);
1851 if (expect_false (!ev_is_active (w))) 2651 if (expect_false (!ev_is_active (w)))
1852 return; 2652 return;
1853 2653
1854 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2654 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2655
2656 EV_FREQUENT_CHECK;
1855 2657
1856 wlist_del (&anfds[w->fd].head, (WL)w); 2658 wlist_del (&anfds[w->fd].head, (WL)w);
1857 ev_stop (EV_A_ (W)w); 2659 ev_stop (EV_A_ (W)w);
1858 2660
1859 fd_change (EV_A_ w->fd, 1); 2661 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2662
2663 EV_FREQUENT_CHECK;
1860} 2664}
1861 2665
1862void noinline 2666void noinline
1863ev_timer_start (EV_P_ ev_timer *w) 2667ev_timer_start (EV_P_ ev_timer *w)
1864{ 2668{
1865 if (expect_false (ev_is_active (w))) 2669 if (expect_false (ev_is_active (w)))
1866 return; 2670 return;
1867 2671
1868 ((WT)w)->at += mn_now; 2672 ev_at (w) += mn_now;
1869 2673
1870 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2674 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1871 2675
2676 EV_FREQUENT_CHECK;
2677
2678 ++timercnt;
1872 ev_start (EV_A_ (W)w, ++timercnt); 2679 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1873 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2680 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1874 timers [timercnt - 1] = (WT)w; 2681 ANHE_w (timers [ev_active (w)]) = (WT)w;
1875 upheap (timers, timercnt - 1); 2682 ANHE_at_cache (timers [ev_active (w)]);
2683 upheap (timers, ev_active (w));
1876 2684
2685 EV_FREQUENT_CHECK;
2686
1877 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2687 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1878} 2688}
1879 2689
1880void noinline 2690void noinline
1881ev_timer_stop (EV_P_ ev_timer *w) 2691ev_timer_stop (EV_P_ ev_timer *w)
1882{ 2692{
1883 clear_pending (EV_A_ (W)w); 2693 clear_pending (EV_A_ (W)w);
1884 if (expect_false (!ev_is_active (w))) 2694 if (expect_false (!ev_is_active (w)))
1885 return; 2695 return;
1886 2696
1887 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2697 EV_FREQUENT_CHECK;
1888 2698
1889 { 2699 {
1890 int active = ((W)w)->active; 2700 int active = ev_active (w);
1891 2701
2702 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2703
2704 --timercnt;
2705
1892 if (expect_true (--active < --timercnt)) 2706 if (expect_true (active < timercnt + HEAP0))
1893 { 2707 {
1894 timers [active] = timers [timercnt]; 2708 timers [active] = timers [timercnt + HEAP0];
1895 adjustheap (timers, timercnt, active); 2709 adjustheap (timers, timercnt, active);
1896 } 2710 }
1897 } 2711 }
1898 2712
1899 ((WT)w)->at -= mn_now; 2713 ev_at (w) -= mn_now;
1900 2714
1901 ev_stop (EV_A_ (W)w); 2715 ev_stop (EV_A_ (W)w);
2716
2717 EV_FREQUENT_CHECK;
1902} 2718}
1903 2719
1904void noinline 2720void noinline
1905ev_timer_again (EV_P_ ev_timer *w) 2721ev_timer_again (EV_P_ ev_timer *w)
1906{ 2722{
2723 EV_FREQUENT_CHECK;
2724
1907 if (ev_is_active (w)) 2725 if (ev_is_active (w))
1908 { 2726 {
1909 if (w->repeat) 2727 if (w->repeat)
1910 { 2728 {
1911 ((WT)w)->at = mn_now + w->repeat; 2729 ev_at (w) = mn_now + w->repeat;
2730 ANHE_at_cache (timers [ev_active (w)]);
1912 adjustheap (timers, timercnt, ((W)w)->active - 1); 2731 adjustheap (timers, timercnt, ev_active (w));
1913 } 2732 }
1914 else 2733 else
1915 ev_timer_stop (EV_A_ w); 2734 ev_timer_stop (EV_A_ w);
1916 } 2735 }
1917 else if (w->repeat) 2736 else if (w->repeat)
1918 { 2737 {
1919 w->at = w->repeat; 2738 ev_at (w) = w->repeat;
1920 ev_timer_start (EV_A_ w); 2739 ev_timer_start (EV_A_ w);
1921 } 2740 }
2741
2742 EV_FREQUENT_CHECK;
2743}
2744
2745ev_tstamp
2746ev_timer_remaining (EV_P_ ev_timer *w)
2747{
2748 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1922} 2749}
1923 2750
1924#if EV_PERIODIC_ENABLE 2751#if EV_PERIODIC_ENABLE
1925void noinline 2752void noinline
1926ev_periodic_start (EV_P_ ev_periodic *w) 2753ev_periodic_start (EV_P_ ev_periodic *w)
1927{ 2754{
1928 if (expect_false (ev_is_active (w))) 2755 if (expect_false (ev_is_active (w)))
1929 return; 2756 return;
1930 2757
1931 if (w->reschedule_cb) 2758 if (w->reschedule_cb)
1932 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2759 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 2760 else if (w->interval)
1934 { 2761 {
1935 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2762 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1936 /* this formula differs from the one in periodic_reify because we do not always round up */ 2763 /* this formula differs from the one in periodic_reify because we do not always round up */
1937 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2764 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1938 } 2765 }
1939 else 2766 else
1940 ((WT)w)->at = w->offset; 2767 ev_at (w) = w->offset;
1941 2768
2769 EV_FREQUENT_CHECK;
2770
2771 ++periodiccnt;
1942 ev_start (EV_A_ (W)w, ++periodiccnt); 2772 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1943 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2773 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1944 periodics [periodiccnt - 1] = (WT)w; 2774 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1945 upheap (periodics, periodiccnt - 1); 2775 ANHE_at_cache (periodics [ev_active (w)]);
2776 upheap (periodics, ev_active (w));
1946 2777
2778 EV_FREQUENT_CHECK;
2779
1947 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2780 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1948} 2781}
1949 2782
1950void noinline 2783void noinline
1951ev_periodic_stop (EV_P_ ev_periodic *w) 2784ev_periodic_stop (EV_P_ ev_periodic *w)
1952{ 2785{
1953 clear_pending (EV_A_ (W)w); 2786 clear_pending (EV_A_ (W)w);
1954 if (expect_false (!ev_is_active (w))) 2787 if (expect_false (!ev_is_active (w)))
1955 return; 2788 return;
1956 2789
1957 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2790 EV_FREQUENT_CHECK;
1958 2791
1959 { 2792 {
1960 int active = ((W)w)->active; 2793 int active = ev_active (w);
1961 2794
2795 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2796
2797 --periodiccnt;
2798
1962 if (expect_true (--active < --periodiccnt)) 2799 if (expect_true (active < periodiccnt + HEAP0))
1963 { 2800 {
1964 periodics [active] = periodics [periodiccnt]; 2801 periodics [active] = periodics [periodiccnt + HEAP0];
1965 adjustheap (periodics, periodiccnt, active); 2802 adjustheap (periodics, periodiccnt, active);
1966 } 2803 }
1967 } 2804 }
1968 2805
1969 ev_stop (EV_A_ (W)w); 2806 ev_stop (EV_A_ (W)w);
2807
2808 EV_FREQUENT_CHECK;
1970} 2809}
1971 2810
1972void noinline 2811void noinline
1973ev_periodic_again (EV_P_ ev_periodic *w) 2812ev_periodic_again (EV_P_ ev_periodic *w)
1974{ 2813{
… …
1980 2819
1981#ifndef SA_RESTART 2820#ifndef SA_RESTART
1982# define SA_RESTART 0 2821# define SA_RESTART 0
1983#endif 2822#endif
1984 2823
2824#if EV_SIGNAL_ENABLE
2825
1985void noinline 2826void noinline
1986ev_signal_start (EV_P_ ev_signal *w) 2827ev_signal_start (EV_P_ ev_signal *w)
1987{ 2828{
1988#if EV_MULTIPLICITY
1989 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1990#endif
1991 if (expect_false (ev_is_active (w))) 2829 if (expect_false (ev_is_active (w)))
1992 return; 2830 return;
1993 2831
1994 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2832 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1995 2833
1996 evpipe_init (EV_A); 2834#if EV_MULTIPLICITY
2835 assert (("libev: a signal must not be attached to two different loops",
2836 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1997 2837
2838 signals [w->signum - 1].loop = EV_A;
2839#endif
2840
2841 EV_FREQUENT_CHECK;
2842
2843#if EV_USE_SIGNALFD
2844 if (sigfd == -2)
1998 { 2845 {
1999#ifndef _WIN32 2846 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2000 sigset_t full, prev; 2847 if (sigfd < 0 && errno == EINVAL)
2001 sigfillset (&full); 2848 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2002 sigprocmask (SIG_SETMASK, &full, &prev);
2003#endif
2004 2849
2005 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2850 if (sigfd >= 0)
2851 {
2852 fd_intern (sigfd); /* doing it twice will not hurt */
2006 2853
2007#ifndef _WIN32 2854 sigemptyset (&sigfd_set);
2008 sigprocmask (SIG_SETMASK, &prev, 0); 2855
2009#endif 2856 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2857 ev_set_priority (&sigfd_w, EV_MAXPRI);
2858 ev_io_start (EV_A_ &sigfd_w);
2859 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2860 }
2010 } 2861 }
2862
2863 if (sigfd >= 0)
2864 {
2865 /* TODO: check .head */
2866 sigaddset (&sigfd_set, w->signum);
2867 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2868
2869 signalfd (sigfd, &sigfd_set, 0);
2870 }
2871#endif
2011 2872
2012 ev_start (EV_A_ (W)w, 1); 2873 ev_start (EV_A_ (W)w, 1);
2013 wlist_add (&signals [w->signum - 1].head, (WL)w); 2874 wlist_add (&signals [w->signum - 1].head, (WL)w);
2014 2875
2015 if (!((WL)w)->next) 2876 if (!((WL)w)->next)
2877# if EV_USE_SIGNALFD
2878 if (sigfd < 0) /*TODO*/
2879# endif
2016 { 2880 {
2017#if _WIN32 2881# ifdef _WIN32
2882 evpipe_init (EV_A);
2883
2018 signal (w->signum, ev_sighandler); 2884 signal (w->signum, ev_sighandler);
2019#else 2885# else
2020 struct sigaction sa; 2886 struct sigaction sa;
2887
2888 evpipe_init (EV_A);
2889
2021 sa.sa_handler = ev_sighandler; 2890 sa.sa_handler = ev_sighandler;
2022 sigfillset (&sa.sa_mask); 2891 sigfillset (&sa.sa_mask);
2023 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2892 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2024 sigaction (w->signum, &sa, 0); 2893 sigaction (w->signum, &sa, 0);
2894
2895 if (origflags & EVFLAG_NOSIGMASK)
2896 {
2897 sigemptyset (&sa.sa_mask);
2898 sigaddset (&sa.sa_mask, w->signum);
2899 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2900 }
2025#endif 2901#endif
2026 } 2902 }
2903
2904 EV_FREQUENT_CHECK;
2027} 2905}
2028 2906
2029void noinline 2907void noinline
2030ev_signal_stop (EV_P_ ev_signal *w) 2908ev_signal_stop (EV_P_ ev_signal *w)
2031{ 2909{
2032 clear_pending (EV_A_ (W)w); 2910 clear_pending (EV_A_ (W)w);
2033 if (expect_false (!ev_is_active (w))) 2911 if (expect_false (!ev_is_active (w)))
2034 return; 2912 return;
2035 2913
2914 EV_FREQUENT_CHECK;
2915
2036 wlist_del (&signals [w->signum - 1].head, (WL)w); 2916 wlist_del (&signals [w->signum - 1].head, (WL)w);
2037 ev_stop (EV_A_ (W)w); 2917 ev_stop (EV_A_ (W)w);
2038 2918
2039 if (!signals [w->signum - 1].head) 2919 if (!signals [w->signum - 1].head)
2920 {
2921#if EV_MULTIPLICITY
2922 signals [w->signum - 1].loop = 0; /* unattach from signal */
2923#endif
2924#if EV_USE_SIGNALFD
2925 if (sigfd >= 0)
2926 {
2927 sigset_t ss;
2928
2929 sigemptyset (&ss);
2930 sigaddset (&ss, w->signum);
2931 sigdelset (&sigfd_set, w->signum);
2932
2933 signalfd (sigfd, &sigfd_set, 0);
2934 sigprocmask (SIG_UNBLOCK, &ss, 0);
2935 }
2936 else
2937#endif
2040 signal (w->signum, SIG_DFL); 2938 signal (w->signum, SIG_DFL);
2939 }
2940
2941 EV_FREQUENT_CHECK;
2041} 2942}
2943
2944#endif
2945
2946#if EV_CHILD_ENABLE
2042 2947
2043void 2948void
2044ev_child_start (EV_P_ ev_child *w) 2949ev_child_start (EV_P_ ev_child *w)
2045{ 2950{
2046#if EV_MULTIPLICITY 2951#if EV_MULTIPLICITY
2047 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2952 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2048#endif 2953#endif
2049 if (expect_false (ev_is_active (w))) 2954 if (expect_false (ev_is_active (w)))
2050 return; 2955 return;
2051 2956
2957 EV_FREQUENT_CHECK;
2958
2052 ev_start (EV_A_ (W)w, 1); 2959 ev_start (EV_A_ (W)w, 1);
2053 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2960 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2961
2962 EV_FREQUENT_CHECK;
2054} 2963}
2055 2964
2056void 2965void
2057ev_child_stop (EV_P_ ev_child *w) 2966ev_child_stop (EV_P_ ev_child *w)
2058{ 2967{
2059 clear_pending (EV_A_ (W)w); 2968 clear_pending (EV_A_ (W)w);
2060 if (expect_false (!ev_is_active (w))) 2969 if (expect_false (!ev_is_active (w)))
2061 return; 2970 return;
2062 2971
2972 EV_FREQUENT_CHECK;
2973
2063 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2974 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2064 ev_stop (EV_A_ (W)w); 2975 ev_stop (EV_A_ (W)w);
2976
2977 EV_FREQUENT_CHECK;
2065} 2978}
2979
2980#endif
2066 2981
2067#if EV_STAT_ENABLE 2982#if EV_STAT_ENABLE
2068 2983
2069# ifdef _WIN32 2984# ifdef _WIN32
2070# undef lstat 2985# undef lstat
2071# define lstat(a,b) _stati64 (a,b) 2986# define lstat(a,b) _stati64 (a,b)
2072# endif 2987# endif
2073 2988
2074#define DEF_STAT_INTERVAL 5.0074891 2989#define DEF_STAT_INTERVAL 5.0074891
2990#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2075#define MIN_STAT_INTERVAL 0.1074891 2991#define MIN_STAT_INTERVAL 0.1074891
2076 2992
2077static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2993static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2078 2994
2079#if EV_USE_INOTIFY 2995#if EV_USE_INOTIFY
2080# define EV_INOTIFY_BUFSIZE 8192 2996
2997/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2998# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2081 2999
2082static void noinline 3000static void noinline
2083infy_add (EV_P_ ev_stat *w) 3001infy_add (EV_P_ ev_stat *w)
2084{ 3002{
2085 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3003 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2086 3004
2087 if (w->wd < 0) 3005 if (w->wd >= 0)
3006 {
3007 struct statfs sfs;
3008
3009 /* now local changes will be tracked by inotify, but remote changes won't */
3010 /* unless the filesystem is known to be local, we therefore still poll */
3011 /* also do poll on <2.6.25, but with normal frequency */
3012
3013 if (!fs_2625)
3014 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3015 else if (!statfs (w->path, &sfs)
3016 && (sfs.f_type == 0x1373 /* devfs */
3017 || sfs.f_type == 0xEF53 /* ext2/3 */
3018 || sfs.f_type == 0x3153464a /* jfs */
3019 || sfs.f_type == 0x52654973 /* reiser3 */
3020 || sfs.f_type == 0x01021994 /* tempfs */
3021 || sfs.f_type == 0x58465342 /* xfs */))
3022 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3023 else
3024 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2088 { 3025 }
2089 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3026 else
3027 {
3028 /* can't use inotify, continue to stat */
3029 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2090 3030
2091 /* monitor some parent directory for speedup hints */ 3031 /* if path is not there, monitor some parent directory for speedup hints */
3032 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3033 /* but an efficiency issue only */
2092 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3034 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2093 { 3035 {
2094 char path [4096]; 3036 char path [4096];
2095 strcpy (path, w->path); 3037 strcpy (path, w->path);
2096 3038
… …
2099 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3041 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2100 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3042 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2101 3043
2102 char *pend = strrchr (path, '/'); 3044 char *pend = strrchr (path, '/');
2103 3045
2104 if (!pend) 3046 if (!pend || pend == path)
2105 break; /* whoops, no '/', complain to your admin */ 3047 break;
2106 3048
2107 *pend = 0; 3049 *pend = 0;
2108 w->wd = inotify_add_watch (fs_fd, path, mask); 3050 w->wd = inotify_add_watch (fs_fd, path, mask);
2109 } 3051 }
2110 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3052 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2111 } 3053 }
2112 } 3054 }
2113 else
2114 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2115 3055
2116 if (w->wd >= 0) 3056 if (w->wd >= 0)
2117 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3057 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3058
3059 /* now re-arm timer, if required */
3060 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3061 ev_timer_again (EV_A_ &w->timer);
3062 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2118} 3063}
2119 3064
2120static void noinline 3065static void noinline
2121infy_del (EV_P_ ev_stat *w) 3066infy_del (EV_P_ ev_stat *w)
2122{ 3067{
… …
2125 3070
2126 if (wd < 0) 3071 if (wd < 0)
2127 return; 3072 return;
2128 3073
2129 w->wd = -2; 3074 w->wd = -2;
2130 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3075 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2131 wlist_del (&fs_hash [slot].head, (WL)w); 3076 wlist_del (&fs_hash [slot].head, (WL)w);
2132 3077
2133 /* remove this watcher, if others are watching it, they will rearm */ 3078 /* remove this watcher, if others are watching it, they will rearm */
2134 inotify_rm_watch (fs_fd, wd); 3079 inotify_rm_watch (fs_fd, wd);
2135} 3080}
2136 3081
2137static void noinline 3082static void noinline
2138infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3083infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2139{ 3084{
2140 if (slot < 0) 3085 if (slot < 0)
2141 /* overflow, need to check for all hahs slots */ 3086 /* overflow, need to check for all hash slots */
2142 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3087 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2143 infy_wd (EV_A_ slot, wd, ev); 3088 infy_wd (EV_A_ slot, wd, ev);
2144 else 3089 else
2145 { 3090 {
2146 WL w_; 3091 WL w_;
2147 3092
2148 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3093 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2149 { 3094 {
2150 ev_stat *w = (ev_stat *)w_; 3095 ev_stat *w = (ev_stat *)w_;
2151 w_ = w_->next; /* lets us remove this watcher and all before it */ 3096 w_ = w_->next; /* lets us remove this watcher and all before it */
2152 3097
2153 if (w->wd == wd || wd == -1) 3098 if (w->wd == wd || wd == -1)
2154 { 3099 {
2155 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3100 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2156 { 3101 {
3102 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2157 w->wd = -1; 3103 w->wd = -1;
2158 infy_add (EV_A_ w); /* re-add, no matter what */ 3104 infy_add (EV_A_ w); /* re-add, no matter what */
2159 } 3105 }
2160 3106
2161 stat_timer_cb (EV_A_ &w->timer, 0); 3107 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2166 3112
2167static void 3113static void
2168infy_cb (EV_P_ ev_io *w, int revents) 3114infy_cb (EV_P_ ev_io *w, int revents)
2169{ 3115{
2170 char buf [EV_INOTIFY_BUFSIZE]; 3116 char buf [EV_INOTIFY_BUFSIZE];
2171 struct inotify_event *ev = (struct inotify_event *)buf;
2172 int ofs; 3117 int ofs;
2173 int len = read (fs_fd, buf, sizeof (buf)); 3118 int len = read (fs_fd, buf, sizeof (buf));
2174 3119
2175 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3120 for (ofs = 0; ofs < len; )
3121 {
3122 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2176 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3123 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3124 ofs += sizeof (struct inotify_event) + ev->len;
3125 }
2177} 3126}
2178 3127
2179void inline_size 3128inline_size void
3129ev_check_2625 (EV_P)
3130{
3131 /* kernels < 2.6.25 are borked
3132 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3133 */
3134 if (ev_linux_version () < 0x020619)
3135 return;
3136
3137 fs_2625 = 1;
3138}
3139
3140inline_size int
3141infy_newfd (void)
3142{
3143#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3144 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3145 if (fd >= 0)
3146 return fd;
3147#endif
3148 return inotify_init ();
3149}
3150
3151inline_size void
2180infy_init (EV_P) 3152infy_init (EV_P)
2181{ 3153{
2182 if (fs_fd != -2) 3154 if (fs_fd != -2)
2183 return; 3155 return;
2184 3156
3157 fs_fd = -1;
3158
3159 ev_check_2625 (EV_A);
3160
2185 fs_fd = inotify_init (); 3161 fs_fd = infy_newfd ();
2186 3162
2187 if (fs_fd >= 0) 3163 if (fs_fd >= 0)
2188 { 3164 {
3165 fd_intern (fs_fd);
2189 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3166 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2190 ev_set_priority (&fs_w, EV_MAXPRI); 3167 ev_set_priority (&fs_w, EV_MAXPRI);
2191 ev_io_start (EV_A_ &fs_w); 3168 ev_io_start (EV_A_ &fs_w);
3169 ev_unref (EV_A);
2192 } 3170 }
2193} 3171}
2194 3172
2195void inline_size 3173inline_size void
2196infy_fork (EV_P) 3174infy_fork (EV_P)
2197{ 3175{
2198 int slot; 3176 int slot;
2199 3177
2200 if (fs_fd < 0) 3178 if (fs_fd < 0)
2201 return; 3179 return;
2202 3180
3181 ev_ref (EV_A);
3182 ev_io_stop (EV_A_ &fs_w);
2203 close (fs_fd); 3183 close (fs_fd);
2204 fs_fd = inotify_init (); 3184 fs_fd = infy_newfd ();
2205 3185
3186 if (fs_fd >= 0)
3187 {
3188 fd_intern (fs_fd);
3189 ev_io_set (&fs_w, fs_fd, EV_READ);
3190 ev_io_start (EV_A_ &fs_w);
3191 ev_unref (EV_A);
3192 }
3193
2206 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3194 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2207 { 3195 {
2208 WL w_ = fs_hash [slot].head; 3196 WL w_ = fs_hash [slot].head;
2209 fs_hash [slot].head = 0; 3197 fs_hash [slot].head = 0;
2210 3198
2211 while (w_) 3199 while (w_)
… …
2216 w->wd = -1; 3204 w->wd = -1;
2217 3205
2218 if (fs_fd >= 0) 3206 if (fs_fd >= 0)
2219 infy_add (EV_A_ w); /* re-add, no matter what */ 3207 infy_add (EV_A_ w); /* re-add, no matter what */
2220 else 3208 else
3209 {
3210 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3211 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2221 ev_timer_start (EV_A_ &w->timer); 3212 ev_timer_again (EV_A_ &w->timer);
3213 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3214 }
2222 } 3215 }
2223
2224 } 3216 }
2225} 3217}
2226 3218
3219#endif
3220
3221#ifdef _WIN32
3222# define EV_LSTAT(p,b) _stati64 (p, b)
3223#else
3224# define EV_LSTAT(p,b) lstat (p, b)
2227#endif 3225#endif
2228 3226
2229void 3227void
2230ev_stat_stat (EV_P_ ev_stat *w) 3228ev_stat_stat (EV_P_ ev_stat *w)
2231{ 3229{
… …
2238static void noinline 3236static void noinline
2239stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3237stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2240{ 3238{
2241 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3239 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2242 3240
2243 /* we copy this here each the time so that */ 3241 ev_statdata prev = w->attr;
2244 /* prev has the old value when the callback gets invoked */
2245 w->prev = w->attr;
2246 ev_stat_stat (EV_A_ w); 3242 ev_stat_stat (EV_A_ w);
2247 3243
2248 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3244 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2249 if ( 3245 if (
2250 w->prev.st_dev != w->attr.st_dev 3246 prev.st_dev != w->attr.st_dev
2251 || w->prev.st_ino != w->attr.st_ino 3247 || prev.st_ino != w->attr.st_ino
2252 || w->prev.st_mode != w->attr.st_mode 3248 || prev.st_mode != w->attr.st_mode
2253 || w->prev.st_nlink != w->attr.st_nlink 3249 || prev.st_nlink != w->attr.st_nlink
2254 || w->prev.st_uid != w->attr.st_uid 3250 || prev.st_uid != w->attr.st_uid
2255 || w->prev.st_gid != w->attr.st_gid 3251 || prev.st_gid != w->attr.st_gid
2256 || w->prev.st_rdev != w->attr.st_rdev 3252 || prev.st_rdev != w->attr.st_rdev
2257 || w->prev.st_size != w->attr.st_size 3253 || prev.st_size != w->attr.st_size
2258 || w->prev.st_atime != w->attr.st_atime 3254 || prev.st_atime != w->attr.st_atime
2259 || w->prev.st_mtime != w->attr.st_mtime 3255 || prev.st_mtime != w->attr.st_mtime
2260 || w->prev.st_ctime != w->attr.st_ctime 3256 || prev.st_ctime != w->attr.st_ctime
2261 ) { 3257 ) {
3258 /* we only update w->prev on actual differences */
3259 /* in case we test more often than invoke the callback, */
3260 /* to ensure that prev is always different to attr */
3261 w->prev = prev;
3262
2262 #if EV_USE_INOTIFY 3263 #if EV_USE_INOTIFY
3264 if (fs_fd >= 0)
3265 {
2263 infy_del (EV_A_ w); 3266 infy_del (EV_A_ w);
2264 infy_add (EV_A_ w); 3267 infy_add (EV_A_ w);
2265 ev_stat_stat (EV_A_ w); /* avoid race... */ 3268 ev_stat_stat (EV_A_ w); /* avoid race... */
3269 }
2266 #endif 3270 #endif
2267 3271
2268 ev_feed_event (EV_A_ w, EV_STAT); 3272 ev_feed_event (EV_A_ w, EV_STAT);
2269 } 3273 }
2270} 3274}
… …
2273ev_stat_start (EV_P_ ev_stat *w) 3277ev_stat_start (EV_P_ ev_stat *w)
2274{ 3278{
2275 if (expect_false (ev_is_active (w))) 3279 if (expect_false (ev_is_active (w)))
2276 return; 3280 return;
2277 3281
2278 /* since we use memcmp, we need to clear any padding data etc. */
2279 memset (&w->prev, 0, sizeof (ev_statdata));
2280 memset (&w->attr, 0, sizeof (ev_statdata));
2281
2282 ev_stat_stat (EV_A_ w); 3282 ev_stat_stat (EV_A_ w);
2283 3283
3284 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2284 if (w->interval < MIN_STAT_INTERVAL) 3285 w->interval = MIN_STAT_INTERVAL;
2285 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2286 3286
2287 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3287 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2288 ev_set_priority (&w->timer, ev_priority (w)); 3288 ev_set_priority (&w->timer, ev_priority (w));
2289 3289
2290#if EV_USE_INOTIFY 3290#if EV_USE_INOTIFY
2291 infy_init (EV_A); 3291 infy_init (EV_A);
2292 3292
2293 if (fs_fd >= 0) 3293 if (fs_fd >= 0)
2294 infy_add (EV_A_ w); 3294 infy_add (EV_A_ w);
2295 else 3295 else
2296#endif 3296#endif
3297 {
2297 ev_timer_start (EV_A_ &w->timer); 3298 ev_timer_again (EV_A_ &w->timer);
3299 ev_unref (EV_A);
3300 }
2298 3301
2299 ev_start (EV_A_ (W)w, 1); 3302 ev_start (EV_A_ (W)w, 1);
3303
3304 EV_FREQUENT_CHECK;
2300} 3305}
2301 3306
2302void 3307void
2303ev_stat_stop (EV_P_ ev_stat *w) 3308ev_stat_stop (EV_P_ ev_stat *w)
2304{ 3309{
2305 clear_pending (EV_A_ (W)w); 3310 clear_pending (EV_A_ (W)w);
2306 if (expect_false (!ev_is_active (w))) 3311 if (expect_false (!ev_is_active (w)))
2307 return; 3312 return;
2308 3313
3314 EV_FREQUENT_CHECK;
3315
2309#if EV_USE_INOTIFY 3316#if EV_USE_INOTIFY
2310 infy_del (EV_A_ w); 3317 infy_del (EV_A_ w);
2311#endif 3318#endif
3319
3320 if (ev_is_active (&w->timer))
3321 {
3322 ev_ref (EV_A);
2312 ev_timer_stop (EV_A_ &w->timer); 3323 ev_timer_stop (EV_A_ &w->timer);
3324 }
2313 3325
2314 ev_stop (EV_A_ (W)w); 3326 ev_stop (EV_A_ (W)w);
3327
3328 EV_FREQUENT_CHECK;
2315} 3329}
2316#endif 3330#endif
2317 3331
2318#if EV_IDLE_ENABLE 3332#if EV_IDLE_ENABLE
2319void 3333void
… …
2321{ 3335{
2322 if (expect_false (ev_is_active (w))) 3336 if (expect_false (ev_is_active (w)))
2323 return; 3337 return;
2324 3338
2325 pri_adjust (EV_A_ (W)w); 3339 pri_adjust (EV_A_ (W)w);
3340
3341 EV_FREQUENT_CHECK;
2326 3342
2327 { 3343 {
2328 int active = ++idlecnt [ABSPRI (w)]; 3344 int active = ++idlecnt [ABSPRI (w)];
2329 3345
2330 ++idleall; 3346 ++idleall;
2331 ev_start (EV_A_ (W)w, active); 3347 ev_start (EV_A_ (W)w, active);
2332 3348
2333 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3349 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2334 idles [ABSPRI (w)][active - 1] = w; 3350 idles [ABSPRI (w)][active - 1] = w;
2335 } 3351 }
3352
3353 EV_FREQUENT_CHECK;
2336} 3354}
2337 3355
2338void 3356void
2339ev_idle_stop (EV_P_ ev_idle *w) 3357ev_idle_stop (EV_P_ ev_idle *w)
2340{ 3358{
2341 clear_pending (EV_A_ (W)w); 3359 clear_pending (EV_A_ (W)w);
2342 if (expect_false (!ev_is_active (w))) 3360 if (expect_false (!ev_is_active (w)))
2343 return; 3361 return;
2344 3362
3363 EV_FREQUENT_CHECK;
3364
2345 { 3365 {
2346 int active = ((W)w)->active; 3366 int active = ev_active (w);
2347 3367
2348 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3368 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2349 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3369 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2350 3370
2351 ev_stop (EV_A_ (W)w); 3371 ev_stop (EV_A_ (W)w);
2352 --idleall; 3372 --idleall;
2353 } 3373 }
2354}
2355#endif
2356 3374
3375 EV_FREQUENT_CHECK;
3376}
3377#endif
3378
3379#if EV_PREPARE_ENABLE
2357void 3380void
2358ev_prepare_start (EV_P_ ev_prepare *w) 3381ev_prepare_start (EV_P_ ev_prepare *w)
2359{ 3382{
2360 if (expect_false (ev_is_active (w))) 3383 if (expect_false (ev_is_active (w)))
2361 return; 3384 return;
3385
3386 EV_FREQUENT_CHECK;
2362 3387
2363 ev_start (EV_A_ (W)w, ++preparecnt); 3388 ev_start (EV_A_ (W)w, ++preparecnt);
2364 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3389 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2365 prepares [preparecnt - 1] = w; 3390 prepares [preparecnt - 1] = w;
3391
3392 EV_FREQUENT_CHECK;
2366} 3393}
2367 3394
2368void 3395void
2369ev_prepare_stop (EV_P_ ev_prepare *w) 3396ev_prepare_stop (EV_P_ ev_prepare *w)
2370{ 3397{
2371 clear_pending (EV_A_ (W)w); 3398 clear_pending (EV_A_ (W)w);
2372 if (expect_false (!ev_is_active (w))) 3399 if (expect_false (!ev_is_active (w)))
2373 return; 3400 return;
2374 3401
3402 EV_FREQUENT_CHECK;
3403
2375 { 3404 {
2376 int active = ((W)w)->active; 3405 int active = ev_active (w);
3406
2377 prepares [active - 1] = prepares [--preparecnt]; 3407 prepares [active - 1] = prepares [--preparecnt];
2378 ((W)prepares [active - 1])->active = active; 3408 ev_active (prepares [active - 1]) = active;
2379 } 3409 }
2380 3410
2381 ev_stop (EV_A_ (W)w); 3411 ev_stop (EV_A_ (W)w);
2382}
2383 3412
3413 EV_FREQUENT_CHECK;
3414}
3415#endif
3416
3417#if EV_CHECK_ENABLE
2384void 3418void
2385ev_check_start (EV_P_ ev_check *w) 3419ev_check_start (EV_P_ ev_check *w)
2386{ 3420{
2387 if (expect_false (ev_is_active (w))) 3421 if (expect_false (ev_is_active (w)))
2388 return; 3422 return;
3423
3424 EV_FREQUENT_CHECK;
2389 3425
2390 ev_start (EV_A_ (W)w, ++checkcnt); 3426 ev_start (EV_A_ (W)w, ++checkcnt);
2391 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3427 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2392 checks [checkcnt - 1] = w; 3428 checks [checkcnt - 1] = w;
3429
3430 EV_FREQUENT_CHECK;
2393} 3431}
2394 3432
2395void 3433void
2396ev_check_stop (EV_P_ ev_check *w) 3434ev_check_stop (EV_P_ ev_check *w)
2397{ 3435{
2398 clear_pending (EV_A_ (W)w); 3436 clear_pending (EV_A_ (W)w);
2399 if (expect_false (!ev_is_active (w))) 3437 if (expect_false (!ev_is_active (w)))
2400 return; 3438 return;
2401 3439
3440 EV_FREQUENT_CHECK;
3441
2402 { 3442 {
2403 int active = ((W)w)->active; 3443 int active = ev_active (w);
3444
2404 checks [active - 1] = checks [--checkcnt]; 3445 checks [active - 1] = checks [--checkcnt];
2405 ((W)checks [active - 1])->active = active; 3446 ev_active (checks [active - 1]) = active;
2406 } 3447 }
2407 3448
2408 ev_stop (EV_A_ (W)w); 3449 ev_stop (EV_A_ (W)w);
3450
3451 EV_FREQUENT_CHECK;
2409} 3452}
3453#endif
2410 3454
2411#if EV_EMBED_ENABLE 3455#if EV_EMBED_ENABLE
2412void noinline 3456void noinline
2413ev_embed_sweep (EV_P_ ev_embed *w) 3457ev_embed_sweep (EV_P_ ev_embed *w)
2414{ 3458{
2415 ev_loop (w->other, EVLOOP_NONBLOCK); 3459 ev_run (w->other, EVRUN_NOWAIT);
2416} 3460}
2417 3461
2418static void 3462static void
2419embed_io_cb (EV_P_ ev_io *io, int revents) 3463embed_io_cb (EV_P_ ev_io *io, int revents)
2420{ 3464{
2421 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3465 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2422 3466
2423 if (ev_cb (w)) 3467 if (ev_cb (w))
2424 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3468 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2425 else 3469 else
2426 ev_loop (w->other, EVLOOP_NONBLOCK); 3470 ev_run (w->other, EVRUN_NOWAIT);
2427} 3471}
2428 3472
2429static void 3473static void
2430embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3474embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2431{ 3475{
2432 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3476 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2433 3477
2434 { 3478 {
2435 struct ev_loop *loop = w->other; 3479 EV_P = w->other;
2436 3480
2437 while (fdchangecnt) 3481 while (fdchangecnt)
2438 { 3482 {
2439 fd_reify (EV_A); 3483 fd_reify (EV_A);
2440 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3484 ev_run (EV_A_ EVRUN_NOWAIT);
2441 } 3485 }
2442 } 3486 }
3487}
3488
3489static void
3490embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3491{
3492 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3493
3494 ev_embed_stop (EV_A_ w);
3495
3496 {
3497 EV_P = w->other;
3498
3499 ev_loop_fork (EV_A);
3500 ev_run (EV_A_ EVRUN_NOWAIT);
3501 }
3502
3503 ev_embed_start (EV_A_ w);
2443} 3504}
2444 3505
2445#if 0 3506#if 0
2446static void 3507static void
2447embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3508embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2455{ 3516{
2456 if (expect_false (ev_is_active (w))) 3517 if (expect_false (ev_is_active (w)))
2457 return; 3518 return;
2458 3519
2459 { 3520 {
2460 struct ev_loop *loop = w->other; 3521 EV_P = w->other;
2461 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3522 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2462 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3523 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2463 } 3524 }
3525
3526 EV_FREQUENT_CHECK;
2464 3527
2465 ev_set_priority (&w->io, ev_priority (w)); 3528 ev_set_priority (&w->io, ev_priority (w));
2466 ev_io_start (EV_A_ &w->io); 3529 ev_io_start (EV_A_ &w->io);
2467 3530
2468 ev_prepare_init (&w->prepare, embed_prepare_cb); 3531 ev_prepare_init (&w->prepare, embed_prepare_cb);
2469 ev_set_priority (&w->prepare, EV_MINPRI); 3532 ev_set_priority (&w->prepare, EV_MINPRI);
2470 ev_prepare_start (EV_A_ &w->prepare); 3533 ev_prepare_start (EV_A_ &w->prepare);
2471 3534
3535 ev_fork_init (&w->fork, embed_fork_cb);
3536 ev_fork_start (EV_A_ &w->fork);
3537
2472 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3538 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2473 3539
2474 ev_start (EV_A_ (W)w, 1); 3540 ev_start (EV_A_ (W)w, 1);
3541
3542 EV_FREQUENT_CHECK;
2475} 3543}
2476 3544
2477void 3545void
2478ev_embed_stop (EV_P_ ev_embed *w) 3546ev_embed_stop (EV_P_ ev_embed *w)
2479{ 3547{
2480 clear_pending (EV_A_ (W)w); 3548 clear_pending (EV_A_ (W)w);
2481 if (expect_false (!ev_is_active (w))) 3549 if (expect_false (!ev_is_active (w)))
2482 return; 3550 return;
2483 3551
3552 EV_FREQUENT_CHECK;
3553
2484 ev_io_stop (EV_A_ &w->io); 3554 ev_io_stop (EV_A_ &w->io);
2485 ev_prepare_stop (EV_A_ &w->prepare); 3555 ev_prepare_stop (EV_A_ &w->prepare);
3556 ev_fork_stop (EV_A_ &w->fork);
2486 3557
2487 ev_stop (EV_A_ (W)w); 3558 ev_stop (EV_A_ (W)w);
3559
3560 EV_FREQUENT_CHECK;
2488} 3561}
2489#endif 3562#endif
2490 3563
2491#if EV_FORK_ENABLE 3564#if EV_FORK_ENABLE
2492void 3565void
2493ev_fork_start (EV_P_ ev_fork *w) 3566ev_fork_start (EV_P_ ev_fork *w)
2494{ 3567{
2495 if (expect_false (ev_is_active (w))) 3568 if (expect_false (ev_is_active (w)))
2496 return; 3569 return;
3570
3571 EV_FREQUENT_CHECK;
2497 3572
2498 ev_start (EV_A_ (W)w, ++forkcnt); 3573 ev_start (EV_A_ (W)w, ++forkcnt);
2499 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3574 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2500 forks [forkcnt - 1] = w; 3575 forks [forkcnt - 1] = w;
3576
3577 EV_FREQUENT_CHECK;
2501} 3578}
2502 3579
2503void 3580void
2504ev_fork_stop (EV_P_ ev_fork *w) 3581ev_fork_stop (EV_P_ ev_fork *w)
2505{ 3582{
2506 clear_pending (EV_A_ (W)w); 3583 clear_pending (EV_A_ (W)w);
2507 if (expect_false (!ev_is_active (w))) 3584 if (expect_false (!ev_is_active (w)))
2508 return; 3585 return;
2509 3586
3587 EV_FREQUENT_CHECK;
3588
2510 { 3589 {
2511 int active = ((W)w)->active; 3590 int active = ev_active (w);
3591
2512 forks [active - 1] = forks [--forkcnt]; 3592 forks [active - 1] = forks [--forkcnt];
2513 ((W)forks [active - 1])->active = active; 3593 ev_active (forks [active - 1]) = active;
2514 } 3594 }
2515 3595
2516 ev_stop (EV_A_ (W)w); 3596 ev_stop (EV_A_ (W)w);
2517}
2518#endif
2519 3597
3598 EV_FREQUENT_CHECK;
3599}
3600#endif
3601
2520#if EV_ASYNC_ENABLE 3602#if EV_CLEANUP_ENABLE
2521void 3603void
2522ev_async_start (EV_P_ ev_async *w) 3604ev_cleanup_start (EV_P_ ev_cleanup *w)
2523{ 3605{
2524 if (expect_false (ev_is_active (w))) 3606 if (expect_false (ev_is_active (w)))
2525 return; 3607 return;
2526 3608
3609 EV_FREQUENT_CHECK;
3610
3611 ev_start (EV_A_ (W)w, ++cleanupcnt);
3612 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3613 cleanups [cleanupcnt - 1] = w;
3614
3615 /* cleanup watchers should never keep a refcount on the loop */
3616 ev_unref (EV_A);
3617 EV_FREQUENT_CHECK;
3618}
3619
3620void
3621ev_cleanup_stop (EV_P_ ev_cleanup *w)
3622{
3623 clear_pending (EV_A_ (W)w);
3624 if (expect_false (!ev_is_active (w)))
3625 return;
3626
3627 EV_FREQUENT_CHECK;
3628 ev_ref (EV_A);
3629
3630 {
3631 int active = ev_active (w);
3632
3633 cleanups [active - 1] = cleanups [--cleanupcnt];
3634 ev_active (cleanups [active - 1]) = active;
3635 }
3636
3637 ev_stop (EV_A_ (W)w);
3638
3639 EV_FREQUENT_CHECK;
3640}
3641#endif
3642
3643#if EV_ASYNC_ENABLE
3644void
3645ev_async_start (EV_P_ ev_async *w)
3646{
3647 if (expect_false (ev_is_active (w)))
3648 return;
3649
3650 w->sent = 0;
3651
2527 evpipe_init (EV_A); 3652 evpipe_init (EV_A);
3653
3654 EV_FREQUENT_CHECK;
2528 3655
2529 ev_start (EV_A_ (W)w, ++asynccnt); 3656 ev_start (EV_A_ (W)w, ++asynccnt);
2530 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3657 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2531 asyncs [asynccnt - 1] = w; 3658 asyncs [asynccnt - 1] = w;
3659
3660 EV_FREQUENT_CHECK;
2532} 3661}
2533 3662
2534void 3663void
2535ev_async_stop (EV_P_ ev_async *w) 3664ev_async_stop (EV_P_ ev_async *w)
2536{ 3665{
2537 clear_pending (EV_A_ (W)w); 3666 clear_pending (EV_A_ (W)w);
2538 if (expect_false (!ev_is_active (w))) 3667 if (expect_false (!ev_is_active (w)))
2539 return; 3668 return;
2540 3669
3670 EV_FREQUENT_CHECK;
3671
2541 { 3672 {
2542 int active = ((W)w)->active; 3673 int active = ev_active (w);
3674
2543 asyncs [active - 1] = asyncs [--asynccnt]; 3675 asyncs [active - 1] = asyncs [--asynccnt];
2544 ((W)asyncs [active - 1])->active = active; 3676 ev_active (asyncs [active - 1]) = active;
2545 } 3677 }
2546 3678
2547 ev_stop (EV_A_ (W)w); 3679 ev_stop (EV_A_ (W)w);
3680
3681 EV_FREQUENT_CHECK;
2548} 3682}
2549 3683
2550void 3684void
2551ev_async_send (EV_P_ ev_async *w) 3685ev_async_send (EV_P_ ev_async *w)
2552{ 3686{
2553 w->sent = 1; 3687 w->sent = 1;
2554 evpipe_write (EV_A_ &gotasync); 3688 evpipe_write (EV_A_ &async_pending);
2555} 3689}
2556#endif 3690#endif
2557 3691
2558/*****************************************************************************/ 3692/*****************************************************************************/
2559 3693
… …
2569once_cb (EV_P_ struct ev_once *once, int revents) 3703once_cb (EV_P_ struct ev_once *once, int revents)
2570{ 3704{
2571 void (*cb)(int revents, void *arg) = once->cb; 3705 void (*cb)(int revents, void *arg) = once->cb;
2572 void *arg = once->arg; 3706 void *arg = once->arg;
2573 3707
2574 ev_io_stop (EV_A_ &once->io); 3708 ev_io_stop (EV_A_ &once->io);
2575 ev_timer_stop (EV_A_ &once->to); 3709 ev_timer_stop (EV_A_ &once->to);
2576 ev_free (once); 3710 ev_free (once);
2577 3711
2578 cb (revents, arg); 3712 cb (revents, arg);
2579} 3713}
2580 3714
2581static void 3715static void
2582once_cb_io (EV_P_ ev_io *w, int revents) 3716once_cb_io (EV_P_ ev_io *w, int revents)
2583{ 3717{
2584 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3718 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3719
3720 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2585} 3721}
2586 3722
2587static void 3723static void
2588once_cb_to (EV_P_ ev_timer *w, int revents) 3724once_cb_to (EV_P_ ev_timer *w, int revents)
2589{ 3725{
2590 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3726 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3727
3728 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2591} 3729}
2592 3730
2593void 3731void
2594ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3732ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2595{ 3733{
2596 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3734 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2597 3735
2598 if (expect_false (!once)) 3736 if (expect_false (!once))
2599 { 3737 {
2600 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3738 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2601 return; 3739 return;
2602 } 3740 }
2603 3741
2604 once->cb = cb; 3742 once->cb = cb;
2605 once->arg = arg; 3743 once->arg = arg;
… …
2617 ev_timer_set (&once->to, timeout, 0.); 3755 ev_timer_set (&once->to, timeout, 0.);
2618 ev_timer_start (EV_A_ &once->to); 3756 ev_timer_start (EV_A_ &once->to);
2619 } 3757 }
2620} 3758}
2621 3759
3760/*****************************************************************************/
3761
3762#if EV_WALK_ENABLE
3763void
3764ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3765{
3766 int i, j;
3767 ev_watcher_list *wl, *wn;
3768
3769 if (types & (EV_IO | EV_EMBED))
3770 for (i = 0; i < anfdmax; ++i)
3771 for (wl = anfds [i].head; wl; )
3772 {
3773 wn = wl->next;
3774
3775#if EV_EMBED_ENABLE
3776 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3777 {
3778 if (types & EV_EMBED)
3779 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3780 }
3781 else
3782#endif
3783#if EV_USE_INOTIFY
3784 if (ev_cb ((ev_io *)wl) == infy_cb)
3785 ;
3786 else
3787#endif
3788 if ((ev_io *)wl != &pipe_w)
3789 if (types & EV_IO)
3790 cb (EV_A_ EV_IO, wl);
3791
3792 wl = wn;
3793 }
3794
3795 if (types & (EV_TIMER | EV_STAT))
3796 for (i = timercnt + HEAP0; i-- > HEAP0; )
3797#if EV_STAT_ENABLE
3798 /*TODO: timer is not always active*/
3799 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3800 {
3801 if (types & EV_STAT)
3802 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3803 }
3804 else
3805#endif
3806 if (types & EV_TIMER)
3807 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3808
3809#if EV_PERIODIC_ENABLE
3810 if (types & EV_PERIODIC)
3811 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3812 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3813#endif
3814
3815#if EV_IDLE_ENABLE
3816 if (types & EV_IDLE)
3817 for (j = NUMPRI; i--; )
3818 for (i = idlecnt [j]; i--; )
3819 cb (EV_A_ EV_IDLE, idles [j][i]);
3820#endif
3821
3822#if EV_FORK_ENABLE
3823 if (types & EV_FORK)
3824 for (i = forkcnt; i--; )
3825 if (ev_cb (forks [i]) != embed_fork_cb)
3826 cb (EV_A_ EV_FORK, forks [i]);
3827#endif
3828
3829#if EV_ASYNC_ENABLE
3830 if (types & EV_ASYNC)
3831 for (i = asynccnt; i--; )
3832 cb (EV_A_ EV_ASYNC, asyncs [i]);
3833#endif
3834
3835#if EV_PREPARE_ENABLE
3836 if (types & EV_PREPARE)
3837 for (i = preparecnt; i--; )
3838# if EV_EMBED_ENABLE
3839 if (ev_cb (prepares [i]) != embed_prepare_cb)
3840# endif
3841 cb (EV_A_ EV_PREPARE, prepares [i]);
3842#endif
3843
3844#if EV_CHECK_ENABLE
3845 if (types & EV_CHECK)
3846 for (i = checkcnt; i--; )
3847 cb (EV_A_ EV_CHECK, checks [i]);
3848#endif
3849
3850#if EV_SIGNAL_ENABLE
3851 if (types & EV_SIGNAL)
3852 for (i = 0; i < EV_NSIG - 1; ++i)
3853 for (wl = signals [i].head; wl; )
3854 {
3855 wn = wl->next;
3856 cb (EV_A_ EV_SIGNAL, wl);
3857 wl = wn;
3858 }
3859#endif
3860
3861#if EV_CHILD_ENABLE
3862 if (types & EV_CHILD)
3863 for (i = (EV_PID_HASHSIZE); i--; )
3864 for (wl = childs [i]; wl; )
3865 {
3866 wn = wl->next;
3867 cb (EV_A_ EV_CHILD, wl);
3868 wl = wn;
3869 }
3870#endif
3871/* EV_STAT 0x00001000 /* stat data changed */
3872/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3873}
3874#endif
3875
2622#if EV_MULTIPLICITY 3876#if EV_MULTIPLICITY
2623 #include "ev_wrap.h" 3877 #include "ev_wrap.h"
2624#endif 3878#endif
2625 3879
2626#ifdef __cplusplus 3880EV_CPP(})
2627}
2628#endif
2629 3881

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