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Comparing libev/ev.c (file contents):
Revision 1.251 by root, Thu May 22 03:42:34 2008 UTC vs.
Revision 1.354 by root, Fri Oct 22 09:24:11 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
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
130# endif 157# endif
131 158
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
314# endif
315#endif
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
237# endif 322# endif
238#endif 323#endif
239 324
240#if 0 /* debugging */ 325#if 0 /* debugging */
241# define EV_VERIFY 3 326# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
244#endif 329#endif
245 330
246#ifndef EV_VERIFY 331#ifndef EV_VERIFY
247# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
248#endif 333#endif
249 334
250#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
251# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
252#endif 337#endif
253 338
254#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
255# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
256#endif 355#endif
257 356
258/* 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
259 364
260#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
261# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
262# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
263#endif 368#endif
… …
277# include <sys/select.h> 382# include <sys/select.h>
278# endif 383# endif
279#endif 384#endif
280 385
281#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/utsname.h>
388# include <sys/statfs.h>
282# include <sys/inotify.h> 389# include <sys/inotify.h>
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0
394# endif
283#endif 395#endif
284 396
285#if EV_SELECT_IS_WINSOCKET 397#if EV_SELECT_IS_WINSOCKET
286# include <winsock.h> 398# include <winsock.h>
287#endif 399#endif
288 400
289#if EV_USE_EVENTFD 401#if EV_USE_EVENTFD
290/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
291# include <stdint.h> 403# include <stdint.h>
292# ifdef __cplusplus 404# ifndef EFD_NONBLOCK
293extern "C" { 405# define EFD_NONBLOCK O_NONBLOCK
294# endif 406# endif
295int eventfd (unsigned int initval, int flags); 407# ifndef EFD_CLOEXEC
296# ifdef __cplusplus 408# ifdef O_CLOEXEC
297} 409# define EFD_CLOEXEC O_CLOEXEC
410# else
411# define EFD_CLOEXEC 02000000
412# endif
298# endif 413# endif
414EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
415#endif
416
417#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h>
420# ifndef SFD_NONBLOCK
421# define SFD_NONBLOCK O_NONBLOCK
422# endif
423# ifndef SFD_CLOEXEC
424# ifdef O_CLOEXEC
425# define SFD_CLOEXEC O_CLOEXEC
426# else
427# define SFD_CLOEXEC 02000000
428# endif
429# endif
430EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
431
432struct signalfd_siginfo
433{
434 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)];
436};
299#endif 437#endif
300 438
301/**/ 439/**/
302 440
303#if EV_VERIFY >= 3 441#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 442# define EV_FREQUENT_CHECK ev_verify (EV_A)
305#else 443#else
306# define EV_FREQUENT_CHECK do { } while (0) 444# define EV_FREQUENT_CHECK do { } while (0)
307#endif 445#endif
308 446
309/* 447/*
… …
316 */ 454 */
317#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
318 456
319#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
320#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
321/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 459
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
322 462
323#if __GNUC__ >= 4 463#if __GNUC__ >= 4
324# define expect(expr,value) __builtin_expect ((expr),(value)) 464# define expect(expr,value) __builtin_expect ((expr),(value))
325# define noinline __attribute__ ((noinline)) 465# define noinline __attribute__ ((noinline))
326#else 466#else
… …
333 473
334#define expect_false(expr) expect ((expr) != 0, 0) 474#define expect_false(expr) expect ((expr) != 0, 0)
335#define expect_true(expr) expect ((expr) != 0, 1) 475#define expect_true(expr) expect ((expr) != 0, 1)
336#define inline_size static inline 476#define inline_size static inline
337 477
338#if EV_MINIMAL 478#if EV_FEATURE_CODE
479# define inline_speed static inline
480#else
339# define inline_speed static noinline 481# define inline_speed static noinline
482#endif
483
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485
486#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0)
340#else 488#else
341# define inline_speed static inline
342#endif
343
344#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif
346 491
347#define EMPTY /* required for microsofts broken pseudo-c compiler */ 492#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */ 493#define EMPTY2(a,b) /* used to suppress some warnings */
349 494
350typedef ev_watcher *W; 495typedef ev_watcher *W;
… …
352typedef ev_watcher_time *WT; 497typedef ev_watcher_time *WT;
353 498
354#define ev_active(w) ((W)(w))->active 499#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at 500#define ev_at(w) ((WT)(w))->at
356 501
502#if EV_USE_REALTIME
503/* sig_atomic_t is used to avoid per-thread variables or locking but still */
504/* giving it a reasonably high chance of working on typical architectures */
505static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
506#endif
507
357#if EV_USE_MONOTONIC 508#if EV_USE_MONOTONIC
358/* sig_atomic_t is used to avoid per-thread variables or locking but still */
359/* giving it a reasonably high chance of working on typical architetcures */
360static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 509static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
510#endif
511
512#ifndef EV_FD_TO_WIN32_HANDLE
513# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
514#endif
515#ifndef EV_WIN32_HANDLE_TO_FD
516# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
517#endif
518#ifndef EV_WIN32_CLOSE_FD
519# define EV_WIN32_CLOSE_FD(fd) close (fd)
361#endif 520#endif
362 521
363#ifdef _WIN32 522#ifdef _WIN32
364# include "ev_win32.c" 523# include "ev_win32.c"
365#endif 524#endif
366 525
367/*****************************************************************************/ 526/*****************************************************************************/
368 527
528#if EV_AVOID_STDIO
529static void noinline
530ev_printerr (const char *msg)
531{
532 write (STDERR_FILENO, msg, strlen (msg));
533}
534#endif
535
369static void (*syserr_cb)(const char *msg); 536static void (*syserr_cb)(const char *msg);
370 537
371void 538void
372ev_set_syserr_cb (void (*cb)(const char *msg)) 539ev_set_syserr_cb (void (*cb)(const char *msg))
373{ 540{
374 syserr_cb = cb; 541 syserr_cb = cb;
375} 542}
376 543
377static void noinline 544static void noinline
378syserr (const char *msg) 545ev_syserr (const char *msg)
379{ 546{
380 if (!msg) 547 if (!msg)
381 msg = "(libev) system error"; 548 msg = "(libev) system error";
382 549
383 if (syserr_cb) 550 if (syserr_cb)
384 syserr_cb (msg); 551 syserr_cb (msg);
385 else 552 else
386 { 553 {
554#if EV_AVOID_STDIO
555 const char *err = strerror (errno);
556
557 ev_printerr (msg);
558 ev_printerr (": ");
559 ev_printerr (err);
560 ev_printerr ("\n");
561#else
387 perror (msg); 562 perror (msg);
563#endif
388 abort (); 564 abort ();
389 } 565 }
390} 566}
391 567
392static void * 568static void *
393ev_realloc_emul (void *ptr, long size) 569ev_realloc_emul (void *ptr, long size)
394{ 570{
571#if __GLIBC__
572 return realloc (ptr, size);
573#else
395 /* some systems, notably openbsd and darwin, fail to properly 574 /* some systems, notably openbsd and darwin, fail to properly
396 * implement realloc (x, 0) (as required by both ansi c-98 and 575 * implement realloc (x, 0) (as required by both ansi c-89 and
397 * the single unix specification, so work around them here. 576 * the single unix specification, so work around them here.
398 */ 577 */
399 578
400 if (size) 579 if (size)
401 return realloc (ptr, size); 580 return realloc (ptr, size);
402 581
403 free (ptr); 582 free (ptr);
404 return 0; 583 return 0;
584#endif
405} 585}
406 586
407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 587static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
408 588
409void 589void
… …
417{ 597{
418 ptr = alloc (ptr, size); 598 ptr = alloc (ptr, size);
419 599
420 if (!ptr && size) 600 if (!ptr && size)
421 { 601 {
602#if EV_AVOID_STDIO
603 ev_printerr ("libev: memory allocation failed, aborting.\n");
604#else
422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 605 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
606#endif
423 abort (); 607 abort ();
424 } 608 }
425 609
426 return ptr; 610 return ptr;
427} 611}
… …
429#define ev_malloc(size) ev_realloc (0, (size)) 613#define ev_malloc(size) ev_realloc (0, (size))
430#define ev_free(ptr) ev_realloc ((ptr), 0) 614#define ev_free(ptr) ev_realloc ((ptr), 0)
431 615
432/*****************************************************************************/ 616/*****************************************************************************/
433 617
618/* set in reify when reification needed */
619#define EV_ANFD_REIFY 1
620
621/* file descriptor info structure */
434typedef struct 622typedef struct
435{ 623{
436 WL head; 624 WL head;
437 unsigned char events; 625 unsigned char events; /* the events watched for */
626 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
627 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
438 unsigned char reify; 628 unsigned char unused;
629#if EV_USE_EPOLL
630 unsigned int egen; /* generation counter to counter epoll bugs */
631#endif
439#if EV_SELECT_IS_WINSOCKET 632#if EV_SELECT_IS_WINSOCKET
440 SOCKET handle; 633 SOCKET handle;
441#endif 634#endif
442} ANFD; 635} ANFD;
443 636
637/* stores the pending event set for a given watcher */
444typedef struct 638typedef struct
445{ 639{
446 W w; 640 W w;
447 int events; 641 int events; /* the pending event set for the given watcher */
448} ANPENDING; 642} ANPENDING;
449 643
450#if EV_USE_INOTIFY 644#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */ 645/* hash table entry per inotify-id */
452typedef struct 646typedef struct
… …
455} ANFS; 649} ANFS;
456#endif 650#endif
457 651
458/* Heap Entry */ 652/* Heap Entry */
459#if EV_HEAP_CACHE_AT 653#if EV_HEAP_CACHE_AT
654 /* a heap element */
460 typedef struct { 655 typedef struct {
461 ev_tstamp at; 656 ev_tstamp at;
462 WT w; 657 WT w;
463 } ANHE; 658 } ANHE;
464 659
465 #define ANHE_w(he) (he).w /* access watcher, read-write */ 660 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */ 661 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 662 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468#else 663#else
664 /* a heap element */
469 typedef WT ANHE; 665 typedef WT ANHE;
470 666
471 #define ANHE_w(he) (he) 667 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at 668 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he) 669 #define ANHE_at_cache(he)
… …
497 693
498 static int ev_default_loop_ptr; 694 static int ev_default_loop_ptr;
499 695
500#endif 696#endif
501 697
698#if EV_FEATURE_API
699# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
700# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
701# define EV_INVOKE_PENDING invoke_cb (EV_A)
702#else
703# define EV_RELEASE_CB (void)0
704# define EV_ACQUIRE_CB (void)0
705# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
706#endif
707
708#define EVBREAK_RECURSE 0x80
709
502/*****************************************************************************/ 710/*****************************************************************************/
503 711
712#ifndef EV_HAVE_EV_TIME
504ev_tstamp 713ev_tstamp
505ev_time (void) 714ev_time (void)
506{ 715{
507#if EV_USE_REALTIME 716#if EV_USE_REALTIME
717 if (expect_true (have_realtime))
718 {
508 struct timespec ts; 719 struct timespec ts;
509 clock_gettime (CLOCK_REALTIME, &ts); 720 clock_gettime (CLOCK_REALTIME, &ts);
510 return ts.tv_sec + ts.tv_nsec * 1e-9; 721 return ts.tv_sec + ts.tv_nsec * 1e-9;
511#else 722 }
723#endif
724
512 struct timeval tv; 725 struct timeval tv;
513 gettimeofday (&tv, 0); 726 gettimeofday (&tv, 0);
514 return tv.tv_sec + tv.tv_usec * 1e-6; 727 return tv.tv_sec + tv.tv_usec * 1e-6;
515#endif
516} 728}
729#endif
517 730
518ev_tstamp inline_size 731inline_size ev_tstamp
519get_clock (void) 732get_clock (void)
520{ 733{
521#if EV_USE_MONOTONIC 734#if EV_USE_MONOTONIC
522 if (expect_true (have_monotonic)) 735 if (expect_true (have_monotonic))
523 { 736 {
… …
544 if (delay > 0.) 757 if (delay > 0.)
545 { 758 {
546#if EV_USE_NANOSLEEP 759#if EV_USE_NANOSLEEP
547 struct timespec ts; 760 struct timespec ts;
548 761
549 ts.tv_sec = (time_t)delay; 762 EV_TS_SET (ts, delay);
550 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
551
552 nanosleep (&ts, 0); 763 nanosleep (&ts, 0);
553#elif defined(_WIN32) 764#elif defined(_WIN32)
554 Sleep ((unsigned long)(delay * 1e3)); 765 Sleep ((unsigned long)(delay * 1e3));
555#else 766#else
556 struct timeval tv; 767 struct timeval tv;
557 768
558 tv.tv_sec = (time_t)delay; 769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 770 /* something not guaranteed by newer posix versions, but guaranteed */
560 771 /* by older ones */
772 EV_TV_SET (tv, delay);
561 select (0, 0, 0, 0, &tv); 773 select (0, 0, 0, 0, &tv);
562#endif 774#endif
563 } 775 }
564} 776}
565 777
566/*****************************************************************************/ 778/*****************************************************************************/
567 779
568#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 780#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569 781
570int inline_size 782/* find a suitable new size for the given array, */
783/* hopefully by rounding to a nice-to-malloc size */
784inline_size int
571array_nextsize (int elem, int cur, int cnt) 785array_nextsize (int elem, int cur, int cnt)
572{ 786{
573 int ncur = cur + 1; 787 int ncur = cur + 1;
574 788
575 do 789 do
… …
592array_realloc (int elem, void *base, int *cur, int cnt) 806array_realloc (int elem, void *base, int *cur, int cnt)
593{ 807{
594 *cur = array_nextsize (elem, *cur, cnt); 808 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur); 809 return ev_realloc (base, elem * *cur);
596} 810}
811
812#define array_init_zero(base,count) \
813 memset ((void *)(base), 0, sizeof (*(base)) * (count))
597 814
598#define array_needsize(type,base,cur,cnt,init) \ 815#define array_needsize(type,base,cur,cnt,init) \
599 if (expect_false ((cnt) > (cur))) \ 816 if (expect_false ((cnt) > (cur))) \
600 { \ 817 { \
601 int ocur_ = (cur); \ 818 int ocur_ = (cur); \
… …
613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 830 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614 } 831 }
615#endif 832#endif
616 833
617#define array_free(stem, idx) \ 834#define array_free(stem, idx) \
618 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 835 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
619 836
620/*****************************************************************************/ 837/*****************************************************************************/
838
839/* dummy callback for pending events */
840static void noinline
841pendingcb (EV_P_ ev_prepare *w, int revents)
842{
843}
621 844
622void noinline 845void noinline
623ev_feed_event (EV_P_ void *w, int revents) 846ev_feed_event (EV_P_ void *w, int revents)
624{ 847{
625 W w_ = (W)w; 848 W w_ = (W)w;
… …
634 pendings [pri][w_->pending - 1].w = w_; 857 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents; 858 pendings [pri][w_->pending - 1].events = revents;
636 } 859 }
637} 860}
638 861
639void inline_speed 862inline_speed void
863feed_reverse (EV_P_ W w)
864{
865 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
866 rfeeds [rfeedcnt++] = w;
867}
868
869inline_size void
870feed_reverse_done (EV_P_ int revents)
871{
872 do
873 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
874 while (rfeedcnt);
875}
876
877inline_speed void
640queue_events (EV_P_ W *events, int eventcnt, int type) 878queue_events (EV_P_ W *events, int eventcnt, int type)
641{ 879{
642 int i; 880 int i;
643 881
644 for (i = 0; i < eventcnt; ++i) 882 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type); 883 ev_feed_event (EV_A_ events [i], type);
646} 884}
647 885
648/*****************************************************************************/ 886/*****************************************************************************/
649 887
650void inline_size 888inline_speed void
651anfds_init (ANFD *base, int count)
652{
653 while (count--)
654 {
655 base->head = 0;
656 base->events = EV_NONE;
657 base->reify = 0;
658
659 ++base;
660 }
661}
662
663void inline_speed
664fd_event (EV_P_ int fd, int revents) 889fd_event_nocheck (EV_P_ int fd, int revents)
665{ 890{
666 ANFD *anfd = anfds + fd; 891 ANFD *anfd = anfds + fd;
667 ev_io *w; 892 ev_io *w;
668 893
669 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 894 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
673 if (ev) 898 if (ev)
674 ev_feed_event (EV_A_ (W)w, ev); 899 ev_feed_event (EV_A_ (W)w, ev);
675 } 900 }
676} 901}
677 902
903/* do not submit kernel events for fds that have reify set */
904/* because that means they changed while we were polling for new events */
905inline_speed void
906fd_event (EV_P_ int fd, int revents)
907{
908 ANFD *anfd = anfds + fd;
909
910 if (expect_true (!anfd->reify))
911 fd_event_nocheck (EV_A_ fd, revents);
912}
913
678void 914void
679ev_feed_fd_event (EV_P_ int fd, int revents) 915ev_feed_fd_event (EV_P_ int fd, int revents)
680{ 916{
681 if (fd >= 0 && fd < anfdmax) 917 if (fd >= 0 && fd < anfdmax)
682 fd_event (EV_A_ fd, revents); 918 fd_event_nocheck (EV_A_ fd, revents);
683} 919}
684 920
685void inline_size 921/* make sure the external fd watch events are in-sync */
922/* with the kernel/libev internal state */
923inline_size void
686fd_reify (EV_P) 924fd_reify (EV_P)
687{ 925{
688 int i; 926 int i;
689 927
690 for (i = 0; i < fdchangecnt; ++i) 928 for (i = 0; i < fdchangecnt; ++i)
691 { 929 {
692 int fd = fdchanges [i]; 930 int fd = fdchanges [i];
693 ANFD *anfd = anfds + fd; 931 ANFD *anfd = anfds + fd;
694 ev_io *w; 932 ev_io *w;
695 933
696 unsigned char events = 0; 934 unsigned char o_events = anfd->events;
935 unsigned char o_reify = anfd->reify;
697 936
698 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 937 anfd->reify = 0;
699 events |= (unsigned char)w->events;
700 938
701#if EV_SELECT_IS_WINSOCKET 939#if EV_SELECT_IS_WINSOCKET
702 if (events) 940 if (o_reify & EV__IOFDSET)
703 { 941 {
704 unsigned long argp; 942 unsigned long arg;
705 #ifdef EV_FD_TO_WIN32_HANDLE
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 943 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
707 #else
708 anfd->handle = _get_osfhandle (fd);
709 #endif
710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 944 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
711 } 945 }
712#endif 946#endif
713 947
948 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
714 { 949 {
715 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify;
717
718 anfd->reify = 0;
719 anfd->events = events; 950 anfd->events = 0;
720 951
721 if (o_events != events || o_reify & EV_IOFDSET) 952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
953 anfd->events |= (unsigned char)w->events;
954
955 if (o_events != anfd->events)
956 o_reify = EV__IOFDSET; /* actually |= */
957 }
958
959 if (o_reify & EV__IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events); 960 backend_modify (EV_A_ fd, o_events, anfd->events);
723 }
724 } 961 }
725 962
726 fdchangecnt = 0; 963 fdchangecnt = 0;
727} 964}
728 965
729void inline_size 966/* something about the given fd changed */
967inline_size void
730fd_change (EV_P_ int fd, int flags) 968fd_change (EV_P_ int fd, int flags)
731{ 969{
732 unsigned char reify = anfds [fd].reify; 970 unsigned char reify = anfds [fd].reify;
733 anfds [fd].reify |= flags; 971 anfds [fd].reify |= flags;
734 972
… …
738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 976 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739 fdchanges [fdchangecnt - 1] = fd; 977 fdchanges [fdchangecnt - 1] = fd;
740 } 978 }
741} 979}
742 980
743void inline_speed 981/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
982inline_speed void
744fd_kill (EV_P_ int fd) 983fd_kill (EV_P_ int fd)
745{ 984{
746 ev_io *w; 985 ev_io *w;
747 986
748 while ((w = (ev_io *)anfds [fd].head)) 987 while ((w = (ev_io *)anfds [fd].head))
… …
750 ev_io_stop (EV_A_ w); 989 ev_io_stop (EV_A_ w);
751 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 990 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
752 } 991 }
753} 992}
754 993
755int inline_size 994/* check whether the given fd is actually valid, for error recovery */
995inline_size int
756fd_valid (int fd) 996fd_valid (int fd)
757{ 997{
758#ifdef _WIN32 998#ifdef _WIN32
759 return _get_osfhandle (fd) != -1; 999 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
760#else 1000#else
761 return fcntl (fd, F_GETFD) != -1; 1001 return fcntl (fd, F_GETFD) != -1;
762#endif 1002#endif
763} 1003}
764 1004
… …
768{ 1008{
769 int fd; 1009 int fd;
770 1010
771 for (fd = 0; fd < anfdmax; ++fd) 1011 for (fd = 0; fd < anfdmax; ++fd)
772 if (anfds [fd].events) 1012 if (anfds [fd].events)
773 if (!fd_valid (fd) == -1 && errno == EBADF) 1013 if (!fd_valid (fd) && errno == EBADF)
774 fd_kill (EV_A_ fd); 1014 fd_kill (EV_A_ fd);
775} 1015}
776 1016
777/* called on ENOMEM in select/poll to kill some fds and retry */ 1017/* called on ENOMEM in select/poll to kill some fds and retry */
778static void noinline 1018static void noinline
… …
782 1022
783 for (fd = anfdmax; fd--; ) 1023 for (fd = anfdmax; fd--; )
784 if (anfds [fd].events) 1024 if (anfds [fd].events)
785 { 1025 {
786 fd_kill (EV_A_ fd); 1026 fd_kill (EV_A_ fd);
787 return; 1027 break;
788 } 1028 }
789} 1029}
790 1030
791/* usually called after fork if backend needs to re-arm all fds from scratch */ 1031/* usually called after fork if backend needs to re-arm all fds from scratch */
792static void noinline 1032static void noinline
… …
796 1036
797 for (fd = 0; fd < anfdmax; ++fd) 1037 for (fd = 0; fd < anfdmax; ++fd)
798 if (anfds [fd].events) 1038 if (anfds [fd].events)
799 { 1039 {
800 anfds [fd].events = 0; 1040 anfds [fd].events = 0;
1041 anfds [fd].emask = 0;
801 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1042 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802 } 1043 }
803} 1044}
804 1045
1046/* used to prepare libev internal fd's */
1047/* this is not fork-safe */
1048inline_speed void
1049fd_intern (int fd)
1050{
1051#ifdef _WIN32
1052 unsigned long arg = 1;
1053 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1054#else
1055 fcntl (fd, F_SETFD, FD_CLOEXEC);
1056 fcntl (fd, F_SETFL, O_NONBLOCK);
1057#endif
1058}
1059
805/*****************************************************************************/ 1060/*****************************************************************************/
806 1061
807/* 1062/*
808 * the heap functions want a real array index. array index 0 uis guaranteed to not 1063 * the heap functions want a real array index. array index 0 is guaranteed to not
809 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1064 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
810 * the branching factor of the d-tree. 1065 * the branching factor of the d-tree.
811 */ 1066 */
812 1067
813/* 1068/*
… …
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1077#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1078#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k)) 1079#define UPHEAP_DONE(p,k) ((p) == (k))
825 1080
826/* away from the root */ 1081/* away from the root */
827void inline_speed 1082inline_speed void
828downheap (ANHE *heap, int N, int k) 1083downheap (ANHE *heap, int N, int k)
829{ 1084{
830 ANHE he = heap [k]; 1085 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0; 1086 ANHE *E = heap + N + HEAP0;
832 1087
… …
872#define HEAP0 1 1127#define HEAP0 1
873#define HPARENT(k) ((k) >> 1) 1128#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p)) 1129#define UPHEAP_DONE(p,k) (!(p))
875 1130
876/* away from the root */ 1131/* away from the root */
877void inline_speed 1132inline_speed void
878downheap (ANHE *heap, int N, int k) 1133downheap (ANHE *heap, int N, int k)
879{ 1134{
880 ANHE he = heap [k]; 1135 ANHE he = heap [k];
881 1136
882 for (;;) 1137 for (;;)
883 { 1138 {
884 int c = k << 1; 1139 int c = k << 1;
885 1140
886 if (c > N + HEAP0 - 1) 1141 if (c >= N + HEAP0)
887 break; 1142 break;
888 1143
889 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1144 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
890 ? 1 : 0; 1145 ? 1 : 0;
891 1146
… …
902 ev_active (ANHE_w (he)) = k; 1157 ev_active (ANHE_w (he)) = k;
903} 1158}
904#endif 1159#endif
905 1160
906/* towards the root */ 1161/* towards the root */
907void inline_speed 1162inline_speed void
908upheap (ANHE *heap, int k) 1163upheap (ANHE *heap, int k)
909{ 1164{
910 ANHE he = heap [k]; 1165 ANHE he = heap [k];
911 1166
912 for (;;) 1167 for (;;)
… …
923 1178
924 heap [k] = he; 1179 heap [k] = he;
925 ev_active (ANHE_w (he)) = k; 1180 ev_active (ANHE_w (he)) = k;
926} 1181}
927 1182
928void inline_size 1183/* move an element suitably so it is in a correct place */
1184inline_size void
929adjustheap (ANHE *heap, int N, int k) 1185adjustheap (ANHE *heap, int N, int k)
930{ 1186{
931 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1187 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
932 upheap (heap, k); 1188 upheap (heap, k);
933 else 1189 else
934 downheap (heap, N, k); 1190 downheap (heap, N, k);
935} 1191}
936 1192
937/* rebuild the heap: this function is used only once and executed rarely */ 1193/* rebuild the heap: this function is used only once and executed rarely */
938void inline_size 1194inline_size void
939reheap (ANHE *heap, int N) 1195reheap (ANHE *heap, int N)
940{ 1196{
941 int i; 1197 int i;
942 1198
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1199 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
946 upheap (heap, i + HEAP0); 1202 upheap (heap, i + HEAP0);
947} 1203}
948 1204
949/*****************************************************************************/ 1205/*****************************************************************************/
950 1206
1207/* associate signal watchers to a signal signal */
951typedef struct 1208typedef struct
952{ 1209{
1210 EV_ATOMIC_T pending;
1211#if EV_MULTIPLICITY
1212 EV_P;
1213#endif
953 WL head; 1214 WL head;
954 EV_ATOMIC_T gotsig;
955} ANSIG; 1215} ANSIG;
956 1216
957static ANSIG *signals; 1217static ANSIG signals [EV_NSIG - 1];
958static int signalmax;
959
960static EV_ATOMIC_T gotsig;
961
962void inline_size
963signals_init (ANSIG *base, int count)
964{
965 while (count--)
966 {
967 base->head = 0;
968 base->gotsig = 0;
969
970 ++base;
971 }
972}
973 1218
974/*****************************************************************************/ 1219/*****************************************************************************/
975 1220
976void inline_speed 1221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
977fd_intern (int fd)
978{
979#ifdef _WIN32
980 int arg = 1;
981 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
982#else
983 fcntl (fd, F_SETFD, FD_CLOEXEC);
984 fcntl (fd, F_SETFL, O_NONBLOCK);
985#endif
986}
987 1222
988static void noinline 1223static void noinline
989evpipe_init (EV_P) 1224evpipe_init (EV_P)
990{ 1225{
991 if (!ev_is_active (&pipeev)) 1226 if (!ev_is_active (&pipe_w))
992 { 1227 {
993#if EV_USE_EVENTFD 1228# if EV_USE_EVENTFD
1229 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1230 if (evfd < 0 && errno == EINVAL)
994 if ((evfd = eventfd (0, 0)) >= 0) 1231 evfd = eventfd (0, 0);
1232
1233 if (evfd >= 0)
995 { 1234 {
996 evpipe [0] = -1; 1235 evpipe [0] = -1;
997 fd_intern (evfd); 1236 fd_intern (evfd); /* doing it twice doesn't hurt */
998 ev_io_set (&pipeev, evfd, EV_READ); 1237 ev_io_set (&pipe_w, evfd, EV_READ);
999 } 1238 }
1000 else 1239 else
1001#endif 1240# endif
1002 { 1241 {
1003 while (pipe (evpipe)) 1242 while (pipe (evpipe))
1004 syserr ("(libev) error creating signal/async pipe"); 1243 ev_syserr ("(libev) error creating signal/async pipe");
1005 1244
1006 fd_intern (evpipe [0]); 1245 fd_intern (evpipe [0]);
1007 fd_intern (evpipe [1]); 1246 fd_intern (evpipe [1]);
1008 ev_io_set (&pipeev, evpipe [0], EV_READ); 1247 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1009 } 1248 }
1010 1249
1011 ev_io_start (EV_A_ &pipeev); 1250 ev_io_start (EV_A_ &pipe_w);
1012 ev_unref (EV_A); /* watcher should not keep loop alive */ 1251 ev_unref (EV_A); /* watcher should not keep loop alive */
1013 } 1252 }
1014} 1253}
1015 1254
1016void inline_size 1255inline_size void
1017evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1256evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1018{ 1257{
1019 if (!*flag) 1258 if (!*flag)
1020 { 1259 {
1021 int old_errno = errno; /* save errno because write might clobber it */ 1260 int old_errno = errno; /* save errno because write might clobber it */
1261 char dummy;
1022 1262
1023 *flag = 1; 1263 *flag = 1;
1024 1264
1025#if EV_USE_EVENTFD 1265#if EV_USE_EVENTFD
1026 if (evfd >= 0) 1266 if (evfd >= 0)
… …
1028 uint64_t counter = 1; 1268 uint64_t counter = 1;
1029 write (evfd, &counter, sizeof (uint64_t)); 1269 write (evfd, &counter, sizeof (uint64_t));
1030 } 1270 }
1031 else 1271 else
1032#endif 1272#endif
1273 /* win32 people keep sending patches that change this write() to send() */
1274 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1275 /* so when you think this write should be a send instead, please find out */
1276 /* where your send() is from - it's definitely not the microsoft send, and */
1277 /* tell me. thank you. */
1033 write (evpipe [1], &old_errno, 1); 1278 write (evpipe [1], &dummy, 1);
1034 1279
1035 errno = old_errno; 1280 errno = old_errno;
1036 } 1281 }
1037} 1282}
1038 1283
1284/* called whenever the libev signal pipe */
1285/* got some events (signal, async) */
1039static void 1286static void
1040pipecb (EV_P_ ev_io *iow, int revents) 1287pipecb (EV_P_ ev_io *iow, int revents)
1041{ 1288{
1289 int i;
1290
1042#if EV_USE_EVENTFD 1291#if EV_USE_EVENTFD
1043 if (evfd >= 0) 1292 if (evfd >= 0)
1044 { 1293 {
1045 uint64_t counter; 1294 uint64_t counter;
1046 read (evfd, &counter, sizeof (uint64_t)); 1295 read (evfd, &counter, sizeof (uint64_t));
1047 } 1296 }
1048 else 1297 else
1049#endif 1298#endif
1050 { 1299 {
1051 char dummy; 1300 char dummy;
1301 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1052 read (evpipe [0], &dummy, 1); 1302 read (evpipe [0], &dummy, 1);
1053 } 1303 }
1054 1304
1055 if (gotsig && ev_is_default_loop (EV_A)) 1305 if (sig_pending)
1056 { 1306 {
1057 int signum; 1307 sig_pending = 0;
1058 gotsig = 0;
1059 1308
1060 for (signum = signalmax; signum--; ) 1309 for (i = EV_NSIG - 1; i--; )
1061 if (signals [signum].gotsig) 1310 if (expect_false (signals [i].pending))
1062 ev_feed_signal_event (EV_A_ signum + 1); 1311 ev_feed_signal_event (EV_A_ i + 1);
1063 } 1312 }
1064 1313
1065#if EV_ASYNC_ENABLE 1314#if EV_ASYNC_ENABLE
1066 if (gotasync) 1315 if (async_pending)
1067 { 1316 {
1068 int i; 1317 async_pending = 0;
1069 gotasync = 0;
1070 1318
1071 for (i = asynccnt; i--; ) 1319 for (i = asynccnt; i--; )
1072 if (asyncs [i]->sent) 1320 if (asyncs [i]->sent)
1073 { 1321 {
1074 asyncs [i]->sent = 0; 1322 asyncs [i]->sent = 0;
… …
1082 1330
1083static void 1331static void
1084ev_sighandler (int signum) 1332ev_sighandler (int signum)
1085{ 1333{
1086#if EV_MULTIPLICITY 1334#if EV_MULTIPLICITY
1087 struct ev_loop *loop = &default_loop_struct; 1335 EV_P = signals [signum - 1].loop;
1088#endif 1336#endif
1089 1337
1090#if _WIN32 1338#ifdef _WIN32
1091 signal (signum, ev_sighandler); 1339 signal (signum, ev_sighandler);
1092#endif 1340#endif
1093 1341
1094 signals [signum - 1].gotsig = 1; 1342 signals [signum - 1].pending = 1;
1095 evpipe_write (EV_A_ &gotsig); 1343 evpipe_write (EV_A_ &sig_pending);
1096} 1344}
1097 1345
1098void noinline 1346void noinline
1099ev_feed_signal_event (EV_P_ int signum) 1347ev_feed_signal_event (EV_P_ int signum)
1100{ 1348{
1101 WL w; 1349 WL w;
1102 1350
1351 if (expect_false (signum <= 0 || signum > EV_NSIG))
1352 return;
1353
1354 --signum;
1355
1103#if EV_MULTIPLICITY 1356#if EV_MULTIPLICITY
1104 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1357 /* it is permissible to try to feed a signal to the wrong loop */
1105#endif 1358 /* or, likely more useful, feeding a signal nobody is waiting for */
1106 1359
1107 --signum; 1360 if (expect_false (signals [signum].loop != EV_A))
1108
1109 if (signum < 0 || signum >= signalmax)
1110 return; 1361 return;
1362#endif
1111 1363
1112 signals [signum].gotsig = 0; 1364 signals [signum].pending = 0;
1113 1365
1114 for (w = signals [signum].head; w; w = w->next) 1366 for (w = signals [signum].head; w; w = w->next)
1115 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1367 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1116} 1368}
1117 1369
1370#if EV_USE_SIGNALFD
1371static void
1372sigfdcb (EV_P_ ev_io *iow, int revents)
1373{
1374 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1375
1376 for (;;)
1377 {
1378 ssize_t res = read (sigfd, si, sizeof (si));
1379
1380 /* not ISO-C, as res might be -1, but works with SuS */
1381 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1382 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1383
1384 if (res < (ssize_t)sizeof (si))
1385 break;
1386 }
1387}
1388#endif
1389
1390#endif
1391
1118/*****************************************************************************/ 1392/*****************************************************************************/
1119 1393
1394#if EV_CHILD_ENABLE
1120static WL childs [EV_PID_HASHSIZE]; 1395static WL childs [EV_PID_HASHSIZE];
1121
1122#ifndef _WIN32
1123 1396
1124static ev_signal childev; 1397static ev_signal childev;
1125 1398
1126#ifndef WIFCONTINUED 1399#ifndef WIFCONTINUED
1127# define WIFCONTINUED(status) 0 1400# define WIFCONTINUED(status) 0
1128#endif 1401#endif
1129 1402
1130void inline_speed 1403/* handle a single child status event */
1404inline_speed void
1131child_reap (EV_P_ int chain, int pid, int status) 1405child_reap (EV_P_ int chain, int pid, int status)
1132{ 1406{
1133 ev_child *w; 1407 ev_child *w;
1134 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1408 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1135 1409
1136 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1410 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1137 { 1411 {
1138 if ((w->pid == pid || !w->pid) 1412 if ((w->pid == pid || !w->pid)
1139 && (!traced || (w->flags & 1))) 1413 && (!traced || (w->flags & 1)))
1140 { 1414 {
1141 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1415 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1148 1422
1149#ifndef WCONTINUED 1423#ifndef WCONTINUED
1150# define WCONTINUED 0 1424# define WCONTINUED 0
1151#endif 1425#endif
1152 1426
1427/* called on sigchld etc., calls waitpid */
1153static void 1428static void
1154childcb (EV_P_ ev_signal *sw, int revents) 1429childcb (EV_P_ ev_signal *sw, int revents)
1155{ 1430{
1156 int pid, status; 1431 int pid, status;
1157 1432
… …
1165 /* make sure we are called again until all children have been reaped */ 1440 /* make sure we are called again until all children have been reaped */
1166 /* we need to do it this way so that the callback gets called before we continue */ 1441 /* we need to do it this way so that the callback gets called before we continue */
1167 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1442 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1168 1443
1169 child_reap (EV_A_ pid, pid, status); 1444 child_reap (EV_A_ pid, pid, status);
1170 if (EV_PID_HASHSIZE > 1) 1445 if ((EV_PID_HASHSIZE) > 1)
1171 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1446 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1172} 1447}
1173 1448
1174#endif 1449#endif
1175 1450
… …
1238 /* kqueue is borked on everything but netbsd apparently */ 1513 /* kqueue is borked on everything but netbsd apparently */
1239 /* it usually doesn't work correctly on anything but sockets and pipes */ 1514 /* it usually doesn't work correctly on anything but sockets and pipes */
1240 flags &= ~EVBACKEND_KQUEUE; 1515 flags &= ~EVBACKEND_KQUEUE;
1241#endif 1516#endif
1242#ifdef __APPLE__ 1517#ifdef __APPLE__
1243 // flags &= ~EVBACKEND_KQUEUE; for documentation 1518 /* only select works correctly on that "unix-certified" platform */
1244 flags &= ~EVBACKEND_POLL; 1519 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1520 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1521#endif
1522#ifdef __FreeBSD__
1523 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1245#endif 1524#endif
1246 1525
1247 return flags; 1526 return flags;
1248} 1527}
1249 1528
… …
1263ev_backend (EV_P) 1542ev_backend (EV_P)
1264{ 1543{
1265 return backend; 1544 return backend;
1266} 1545}
1267 1546
1547#if EV_FEATURE_API
1268unsigned int 1548unsigned int
1269ev_loop_count (EV_P) 1549ev_iteration (EV_P)
1270{ 1550{
1271 return loop_count; 1551 return loop_count;
1272} 1552}
1273 1553
1554unsigned int
1555ev_depth (EV_P)
1556{
1557 return loop_depth;
1558}
1559
1274void 1560void
1275ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1561ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1276{ 1562{
1277 io_blocktime = interval; 1563 io_blocktime = interval;
1278} 1564}
… …
1281ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1282{ 1568{
1283 timeout_blocktime = interval; 1569 timeout_blocktime = interval;
1284} 1570}
1285 1571
1572void
1573ev_set_userdata (EV_P_ void *data)
1574{
1575 userdata = data;
1576}
1577
1578void *
1579ev_userdata (EV_P)
1580{
1581 return userdata;
1582}
1583
1584void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1585{
1586 invoke_cb = invoke_pending_cb;
1587}
1588
1589void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1590{
1591 release_cb = release;
1592 acquire_cb = acquire;
1593}
1594#endif
1595
1596/* initialise a loop structure, must be zero-initialised */
1286static void noinline 1597static void noinline
1287loop_init (EV_P_ unsigned int flags) 1598loop_init (EV_P_ unsigned int flags)
1288{ 1599{
1289 if (!backend) 1600 if (!backend)
1290 { 1601 {
1602#if EV_USE_REALTIME
1603 if (!have_realtime)
1604 {
1605 struct timespec ts;
1606
1607 if (!clock_gettime (CLOCK_REALTIME, &ts))
1608 have_realtime = 1;
1609 }
1610#endif
1611
1291#if EV_USE_MONOTONIC 1612#if EV_USE_MONOTONIC
1613 if (!have_monotonic)
1292 { 1614 {
1293 struct timespec ts; 1615 struct timespec ts;
1616
1294 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1617 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1295 have_monotonic = 1; 1618 have_monotonic = 1;
1296 } 1619 }
1297#endif 1620#endif
1621
1622 /* pid check not overridable via env */
1623#ifndef _WIN32
1624 if (flags & EVFLAG_FORKCHECK)
1625 curpid = getpid ();
1626#endif
1627
1628 if (!(flags & EVFLAG_NOENV)
1629 && !enable_secure ()
1630 && getenv ("LIBEV_FLAGS"))
1631 flags = atoi (getenv ("LIBEV_FLAGS"));
1298 1632
1299 ev_rt_now = ev_time (); 1633 ev_rt_now = ev_time ();
1300 mn_now = get_clock (); 1634 mn_now = get_clock ();
1301 now_floor = mn_now; 1635 now_floor = mn_now;
1302 rtmn_diff = ev_rt_now - mn_now; 1636 rtmn_diff = ev_rt_now - mn_now;
1637#if EV_FEATURE_API
1638 invoke_cb = ev_invoke_pending;
1639#endif
1303 1640
1304 io_blocktime = 0.; 1641 io_blocktime = 0.;
1305 timeout_blocktime = 0.; 1642 timeout_blocktime = 0.;
1306 backend = 0; 1643 backend = 0;
1307 backend_fd = -1; 1644 backend_fd = -1;
1308 gotasync = 0; 1645 sig_pending = 0;
1646#if EV_ASYNC_ENABLE
1647 async_pending = 0;
1648#endif
1309#if EV_USE_INOTIFY 1649#if EV_USE_INOTIFY
1310 fs_fd = -2; 1650 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1311#endif 1651#endif
1312 1652#if EV_USE_SIGNALFD
1313 /* pid check not overridable via env */ 1653 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1314#ifndef _WIN32
1315 if (flags & EVFLAG_FORKCHECK)
1316 curpid = getpid ();
1317#endif 1654#endif
1318
1319 if (!(flags & EVFLAG_NOENV)
1320 && !enable_secure ()
1321 && getenv ("LIBEV_FLAGS"))
1322 flags = atoi (getenv ("LIBEV_FLAGS"));
1323 1655
1324 if (!(flags & 0x0000ffffU)) 1656 if (!(flags & 0x0000ffffU))
1325 flags |= ev_recommended_backends (); 1657 flags |= ev_recommended_backends ();
1326 1658
1327#if EV_USE_PORT 1659#if EV_USE_PORT
… …
1338#endif 1670#endif
1339#if EV_USE_SELECT 1671#if EV_USE_SELECT
1340 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1672 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1341#endif 1673#endif
1342 1674
1675 ev_prepare_init (&pending_w, pendingcb);
1676
1677#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1343 ev_init (&pipeev, pipecb); 1678 ev_init (&pipe_w, pipecb);
1344 ev_set_priority (&pipeev, EV_MAXPRI); 1679 ev_set_priority (&pipe_w, EV_MAXPRI);
1680#endif
1345 } 1681 }
1346} 1682}
1347 1683
1684/* free up a loop structure */
1348static void noinline 1685static void noinline
1349loop_destroy (EV_P) 1686loop_destroy (EV_P)
1350{ 1687{
1351 int i; 1688 int i;
1352 1689
1353 if (ev_is_active (&pipeev)) 1690 if (ev_is_active (&pipe_w))
1354 { 1691 {
1355 ev_ref (EV_A); /* signal watcher */ 1692 /*ev_ref (EV_A);*/
1356 ev_io_stop (EV_A_ &pipeev); 1693 /*ev_io_stop (EV_A_ &pipe_w);*/
1357 1694
1358#if EV_USE_EVENTFD 1695#if EV_USE_EVENTFD
1359 if (evfd >= 0) 1696 if (evfd >= 0)
1360 close (evfd); 1697 close (evfd);
1361#endif 1698#endif
1362 1699
1363 if (evpipe [0] >= 0) 1700 if (evpipe [0] >= 0)
1364 { 1701 {
1365 close (evpipe [0]); 1702 EV_WIN32_CLOSE_FD (evpipe [0]);
1366 close (evpipe [1]); 1703 EV_WIN32_CLOSE_FD (evpipe [1]);
1367 } 1704 }
1368 } 1705 }
1706
1707#if EV_USE_SIGNALFD
1708 if (ev_is_active (&sigfd_w))
1709 close (sigfd);
1710#endif
1369 1711
1370#if EV_USE_INOTIFY 1712#if EV_USE_INOTIFY
1371 if (fs_fd >= 0) 1713 if (fs_fd >= 0)
1372 close (fs_fd); 1714 close (fs_fd);
1373#endif 1715#endif
… …
1397#if EV_IDLE_ENABLE 1739#if EV_IDLE_ENABLE
1398 array_free (idle, [i]); 1740 array_free (idle, [i]);
1399#endif 1741#endif
1400 } 1742 }
1401 1743
1402 ev_free (anfds); anfdmax = 0; 1744 ev_free (anfds); anfds = 0; anfdmax = 0;
1403 1745
1404 /* have to use the microsoft-never-gets-it-right macro */ 1746 /* have to use the microsoft-never-gets-it-right macro */
1747 array_free (rfeed, EMPTY);
1405 array_free (fdchange, EMPTY); 1748 array_free (fdchange, EMPTY);
1406 array_free (timer, EMPTY); 1749 array_free (timer, EMPTY);
1407#if EV_PERIODIC_ENABLE 1750#if EV_PERIODIC_ENABLE
1408 array_free (periodic, EMPTY); 1751 array_free (periodic, EMPTY);
1409#endif 1752#endif
… …
1418 1761
1419 backend = 0; 1762 backend = 0;
1420} 1763}
1421 1764
1422#if EV_USE_INOTIFY 1765#if EV_USE_INOTIFY
1423void inline_size infy_fork (EV_P); 1766inline_size void infy_fork (EV_P);
1424#endif 1767#endif
1425 1768
1426void inline_size 1769inline_size void
1427loop_fork (EV_P) 1770loop_fork (EV_P)
1428{ 1771{
1429#if EV_USE_PORT 1772#if EV_USE_PORT
1430 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1773 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1431#endif 1774#endif
… …
1437#endif 1780#endif
1438#if EV_USE_INOTIFY 1781#if EV_USE_INOTIFY
1439 infy_fork (EV_A); 1782 infy_fork (EV_A);
1440#endif 1783#endif
1441 1784
1442 if (ev_is_active (&pipeev)) 1785 if (ev_is_active (&pipe_w))
1443 { 1786 {
1444 /* this "locks" the handlers against writing to the pipe */ 1787 /* this "locks" the handlers against writing to the pipe */
1445 /* while we modify the fd vars */ 1788 /* while we modify the fd vars */
1446 gotsig = 1; 1789 sig_pending = 1;
1447#if EV_ASYNC_ENABLE 1790#if EV_ASYNC_ENABLE
1448 gotasync = 1; 1791 async_pending = 1;
1449#endif 1792#endif
1450 1793
1451 ev_ref (EV_A); 1794 ev_ref (EV_A);
1452 ev_io_stop (EV_A_ &pipeev); 1795 ev_io_stop (EV_A_ &pipe_w);
1453 1796
1454#if EV_USE_EVENTFD 1797#if EV_USE_EVENTFD
1455 if (evfd >= 0) 1798 if (evfd >= 0)
1456 close (evfd); 1799 close (evfd);
1457#endif 1800#endif
1458 1801
1459 if (evpipe [0] >= 0) 1802 if (evpipe [0] >= 0)
1460 { 1803 {
1461 close (evpipe [0]); 1804 EV_WIN32_CLOSE_FD (evpipe [0]);
1462 close (evpipe [1]); 1805 EV_WIN32_CLOSE_FD (evpipe [1]);
1463 } 1806 }
1464 1807
1808#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1465 evpipe_init (EV_A); 1809 evpipe_init (EV_A);
1466 /* now iterate over everything, in case we missed something */ 1810 /* now iterate over everything, in case we missed something */
1467 pipecb (EV_A_ &pipeev, EV_READ); 1811 pipecb (EV_A_ &pipe_w, EV_READ);
1812#endif
1468 } 1813 }
1469 1814
1470 postfork = 0; 1815 postfork = 0;
1471} 1816}
1472 1817
1473#if EV_MULTIPLICITY 1818#if EV_MULTIPLICITY
1474 1819
1475struct ev_loop * 1820struct ev_loop *
1476ev_loop_new (unsigned int flags) 1821ev_loop_new (unsigned int flags)
1477{ 1822{
1478 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1823 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1479 1824
1480 memset (loop, 0, sizeof (struct ev_loop)); 1825 memset (EV_A, 0, sizeof (struct ev_loop));
1481
1482 loop_init (EV_A_ flags); 1826 loop_init (EV_A_ flags);
1483 1827
1484 if (ev_backend (EV_A)) 1828 if (ev_backend (EV_A))
1485 return loop; 1829 return EV_A;
1486 1830
1487 return 0; 1831 return 0;
1488} 1832}
1489 1833
1490void 1834void
… …
1497void 1841void
1498ev_loop_fork (EV_P) 1842ev_loop_fork (EV_P)
1499{ 1843{
1500 postfork = 1; /* must be in line with ev_default_fork */ 1844 postfork = 1; /* must be in line with ev_default_fork */
1501} 1845}
1846#endif /* multiplicity */
1502 1847
1503#if EV_VERIFY 1848#if EV_VERIFY
1504void noinline 1849static void noinline
1505verify_watcher (EV_P_ W w) 1850verify_watcher (EV_P_ W w)
1506{ 1851{
1507 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1852 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1508 1853
1509 if (w->pending) 1854 if (w->pending)
1510 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1855 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1511} 1856}
1512 1857
1513static void noinline 1858static void noinline
1514verify_heap (EV_P_ ANHE *heap, int N) 1859verify_heap (EV_P_ ANHE *heap, int N)
1515{ 1860{
1516 int i; 1861 int i;
1517 1862
1518 for (i = HEAP0; i < N + HEAP0; ++i) 1863 for (i = HEAP0; i < N + HEAP0; ++i)
1519 { 1864 {
1520 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1865 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1521 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1866 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1522 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1867 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1523 1868
1524 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1869 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1525 } 1870 }
1526} 1871}
1527 1872
1528static void noinline 1873static void noinline
1529array_verify (EV_P_ W *ws, int cnt) 1874array_verify (EV_P_ W *ws, int cnt)
1530{ 1875{
1531 while (cnt--) 1876 while (cnt--)
1532 { 1877 {
1533 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1878 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1534 verify_watcher (EV_A_ ws [cnt]); 1879 verify_watcher (EV_A_ ws [cnt]);
1535 } 1880 }
1536} 1881}
1537#endif 1882#endif
1538 1883
1884#if EV_FEATURE_API
1539void 1885void
1540ev_loop_verify (EV_P) 1886ev_verify (EV_P)
1541{ 1887{
1542#if EV_VERIFY 1888#if EV_VERIFY
1543 int i; 1889 int i;
1544 WL w; 1890 WL w;
1545 1891
1546 assert (activecnt >= -1); 1892 assert (activecnt >= -1);
1547 1893
1548 assert (fdchangemax >= fdchangecnt); 1894 assert (fdchangemax >= fdchangecnt);
1549 for (i = 0; i < fdchangecnt; ++i) 1895 for (i = 0; i < fdchangecnt; ++i)
1550 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1896 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1551 1897
1552 assert (anfdmax >= 0); 1898 assert (anfdmax >= 0);
1553 for (i = 0; i < anfdmax; ++i) 1899 for (i = 0; i < anfdmax; ++i)
1554 for (w = anfds [i].head; w; w = w->next) 1900 for (w = anfds [i].head; w; w = w->next)
1555 { 1901 {
1556 verify_watcher (EV_A_ (W)w); 1902 verify_watcher (EV_A_ (W)w);
1557 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1903 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1558 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1904 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1559 } 1905 }
1560 1906
1561 assert (timermax >= timercnt); 1907 assert (timermax >= timercnt);
1562 verify_heap (EV_A_ timers, timercnt); 1908 verify_heap (EV_A_ timers, timercnt);
1563 1909
… …
1568 1914
1569 for (i = NUMPRI; i--; ) 1915 for (i = NUMPRI; i--; )
1570 { 1916 {
1571 assert (pendingmax [i] >= pendingcnt [i]); 1917 assert (pendingmax [i] >= pendingcnt [i]);
1572#if EV_IDLE_ENABLE 1918#if EV_IDLE_ENABLE
1919 assert (idleall >= 0);
1573 assert (idlemax [i] >= idlecnt [i]); 1920 assert (idlemax [i] >= idlecnt [i]);
1574 array_verify (EV_A_ (W *)idles [i], idlecnt [i]); 1921 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1575#endif 1922#endif
1576 } 1923 }
1577 1924
… …
1583#if EV_ASYNC_ENABLE 1930#if EV_ASYNC_ENABLE
1584 assert (asyncmax >= asynccnt); 1931 assert (asyncmax >= asynccnt);
1585 array_verify (EV_A_ (W *)asyncs, asynccnt); 1932 array_verify (EV_A_ (W *)asyncs, asynccnt);
1586#endif 1933#endif
1587 1934
1935#if EV_PREPARE_ENABLE
1588 assert (preparemax >= preparecnt); 1936 assert (preparemax >= preparecnt);
1589 array_verify (EV_A_ (W *)prepares, preparecnt); 1937 array_verify (EV_A_ (W *)prepares, preparecnt);
1938#endif
1590 1939
1940#if EV_CHECK_ENABLE
1591 assert (checkmax >= checkcnt); 1941 assert (checkmax >= checkcnt);
1592 array_verify (EV_A_ (W *)checks, checkcnt); 1942 array_verify (EV_A_ (W *)checks, checkcnt);
1943#endif
1593 1944
1594# if 0 1945# if 0
1946#if EV_CHILD_ENABLE
1595 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1947 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1596 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1948 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1949#endif
1597# endif 1950# endif
1598#endif 1951#endif
1599} 1952}
1600 1953#endif
1601#endif /* multiplicity */
1602 1954
1603#if EV_MULTIPLICITY 1955#if EV_MULTIPLICITY
1604struct ev_loop * 1956struct ev_loop *
1605ev_default_loop_init (unsigned int flags) 1957ev_default_loop_init (unsigned int flags)
1606#else 1958#else
… …
1609#endif 1961#endif
1610{ 1962{
1611 if (!ev_default_loop_ptr) 1963 if (!ev_default_loop_ptr)
1612 { 1964 {
1613#if EV_MULTIPLICITY 1965#if EV_MULTIPLICITY
1614 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1966 EV_P = ev_default_loop_ptr = &default_loop_struct;
1615#else 1967#else
1616 ev_default_loop_ptr = 1; 1968 ev_default_loop_ptr = 1;
1617#endif 1969#endif
1618 1970
1619 loop_init (EV_A_ flags); 1971 loop_init (EV_A_ flags);
1620 1972
1621 if (ev_backend (EV_A)) 1973 if (ev_backend (EV_A))
1622 { 1974 {
1623#ifndef _WIN32 1975#if EV_CHILD_ENABLE
1624 ev_signal_init (&childev, childcb, SIGCHLD); 1976 ev_signal_init (&childev, childcb, SIGCHLD);
1625 ev_set_priority (&childev, EV_MAXPRI); 1977 ev_set_priority (&childev, EV_MAXPRI);
1626 ev_signal_start (EV_A_ &childev); 1978 ev_signal_start (EV_A_ &childev);
1627 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1979 ev_unref (EV_A); /* child watcher should not keep loop alive */
1628#endif 1980#endif
… …
1636 1988
1637void 1989void
1638ev_default_destroy (void) 1990ev_default_destroy (void)
1639{ 1991{
1640#if EV_MULTIPLICITY 1992#if EV_MULTIPLICITY
1641 struct ev_loop *loop = ev_default_loop_ptr; 1993 EV_P = ev_default_loop_ptr;
1642#endif 1994#endif
1643 1995
1644#ifndef _WIN32 1996 ev_default_loop_ptr = 0;
1997
1998#if EV_CHILD_ENABLE
1645 ev_ref (EV_A); /* child watcher */ 1999 ev_ref (EV_A); /* child watcher */
1646 ev_signal_stop (EV_A_ &childev); 2000 ev_signal_stop (EV_A_ &childev);
1647#endif 2001#endif
1648 2002
1649 loop_destroy (EV_A); 2003 loop_destroy (EV_A);
… …
1651 2005
1652void 2006void
1653ev_default_fork (void) 2007ev_default_fork (void)
1654{ 2008{
1655#if EV_MULTIPLICITY 2009#if EV_MULTIPLICITY
1656 struct ev_loop *loop = ev_default_loop_ptr; 2010 EV_P = ev_default_loop_ptr;
1657#endif 2011#endif
1658 2012
1659 if (backend)
1660 postfork = 1; /* must be in line with ev_loop_fork */ 2013 postfork = 1; /* must be in line with ev_loop_fork */
1661} 2014}
1662 2015
1663/*****************************************************************************/ 2016/*****************************************************************************/
1664 2017
1665void 2018void
1666ev_invoke (EV_P_ void *w, int revents) 2019ev_invoke (EV_P_ void *w, int revents)
1667{ 2020{
1668 EV_CB_INVOKE ((W)w, revents); 2021 EV_CB_INVOKE ((W)w, revents);
1669} 2022}
1670 2023
1671void inline_speed 2024unsigned int
1672call_pending (EV_P) 2025ev_pending_count (EV_P)
2026{
2027 int pri;
2028 unsigned int count = 0;
2029
2030 for (pri = NUMPRI; pri--; )
2031 count += pendingcnt [pri];
2032
2033 return count;
2034}
2035
2036void noinline
2037ev_invoke_pending (EV_P)
1673{ 2038{
1674 int pri; 2039 int pri;
1675 2040
1676 for (pri = NUMPRI; pri--; ) 2041 for (pri = NUMPRI; pri--; )
1677 while (pendingcnt [pri]) 2042 while (pendingcnt [pri])
1678 { 2043 {
1679 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2044 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1680 2045
1681 if (expect_true (p->w))
1682 {
1683 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2046 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2047 /* ^ this is no longer true, as pending_w could be here */
1684 2048
1685 p->w->pending = 0; 2049 p->w->pending = 0;
1686 EV_CB_INVOKE (p->w, p->events); 2050 EV_CB_INVOKE (p->w, p->events);
1687 EV_FREQUENT_CHECK; 2051 EV_FREQUENT_CHECK;
1688 }
1689 } 2052 }
1690} 2053}
1691 2054
1692#if EV_IDLE_ENABLE 2055#if EV_IDLE_ENABLE
1693void inline_size 2056/* make idle watchers pending. this handles the "call-idle */
2057/* only when higher priorities are idle" logic */
2058inline_size void
1694idle_reify (EV_P) 2059idle_reify (EV_P)
1695{ 2060{
1696 if (expect_false (idleall)) 2061 if (expect_false (idleall))
1697 { 2062 {
1698 int pri; 2063 int pri;
… …
1710 } 2075 }
1711 } 2076 }
1712} 2077}
1713#endif 2078#endif
1714 2079
1715void inline_size 2080/* make timers pending */
2081inline_size void
1716timers_reify (EV_P) 2082timers_reify (EV_P)
1717{ 2083{
1718 EV_FREQUENT_CHECK; 2084 EV_FREQUENT_CHECK;
1719 2085
1720 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2086 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1721 { 2087 {
1722 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2088 do
1723
1724 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1725
1726 /* first reschedule or stop timer */
1727 if (w->repeat)
1728 { 2089 {
2090 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2091
2092 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2093
2094 /* first reschedule or stop timer */
2095 if (w->repeat)
2096 {
1729 ev_at (w) += w->repeat; 2097 ev_at (w) += w->repeat;
1730 if (ev_at (w) < mn_now) 2098 if (ev_at (w) < mn_now)
1731 ev_at (w) = mn_now; 2099 ev_at (w) = mn_now;
1732 2100
1733 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2101 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1734 2102
1735 ANHE_at_cache (timers [HEAP0]); 2103 ANHE_at_cache (timers [HEAP0]);
1736 downheap (timers, timercnt, HEAP0); 2104 downheap (timers, timercnt, HEAP0);
2105 }
2106 else
2107 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2108
2109 EV_FREQUENT_CHECK;
2110 feed_reverse (EV_A_ (W)w);
1737 } 2111 }
1738 else 2112 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1739 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1740 2113
1741 EV_FREQUENT_CHECK; 2114 feed_reverse_done (EV_A_ EV_TIMER);
1742 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1743 } 2115 }
1744} 2116}
1745 2117
1746#if EV_PERIODIC_ENABLE 2118#if EV_PERIODIC_ENABLE
1747void inline_size 2119/* make periodics pending */
2120inline_size void
1748periodics_reify (EV_P) 2121periodics_reify (EV_P)
1749{ 2122{
1750 EV_FREQUENT_CHECK; 2123 EV_FREQUENT_CHECK;
1751 2124
1752 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2125 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1753 { 2126 {
1754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2127 int feed_count = 0;
1755 2128
1756 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2129 do
1757
1758 /* first reschedule or stop timer */
1759 if (w->reschedule_cb)
1760 { 2130 {
2131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2132
2133 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2134
2135 /* first reschedule or stop timer */
2136 if (w->reschedule_cb)
2137 {
1761 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2138 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1762 2139
1763 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2140 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1764 2141
1765 ANHE_at_cache (periodics [HEAP0]); 2142 ANHE_at_cache (periodics [HEAP0]);
1766 downheap (periodics, periodiccnt, HEAP0); 2143 downheap (periodics, periodiccnt, HEAP0);
2144 }
2145 else if (w->interval)
2146 {
2147 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2148 /* if next trigger time is not sufficiently in the future, put it there */
2149 /* this might happen because of floating point inexactness */
2150 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2151 {
2152 ev_at (w) += w->interval;
2153
2154 /* if interval is unreasonably low we might still have a time in the past */
2155 /* so correct this. this will make the periodic very inexact, but the user */
2156 /* has effectively asked to get triggered more often than possible */
2157 if (ev_at (w) < ev_rt_now)
2158 ev_at (w) = ev_rt_now;
2159 }
2160
2161 ANHE_at_cache (periodics [HEAP0]);
2162 downheap (periodics, periodiccnt, HEAP0);
2163 }
2164 else
2165 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2166
2167 EV_FREQUENT_CHECK;
2168 feed_reverse (EV_A_ (W)w);
1767 } 2169 }
1768 else if (w->interval) 2170 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1769 {
1770 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1771 /* if next trigger time is not sufficiently in the future, put it there */
1772 /* this might happen because of floating point inexactness */
1773 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1774 {
1775 ev_at (w) += w->interval;
1776 2171
1777 /* if interval is unreasonably low we might still have a time in the past */
1778 /* so correct this. this will make the periodic very inexact, but the user */
1779 /* has effectively asked to get triggered more often than possible */
1780 if (ev_at (w) < ev_rt_now)
1781 ev_at (w) = ev_rt_now;
1782 }
1783
1784 ANHE_at_cache (periodics [HEAP0]);
1785 downheap (periodics, periodiccnt, HEAP0);
1786 }
1787 else
1788 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1789
1790 EV_FREQUENT_CHECK;
1791 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2172 feed_reverse_done (EV_A_ EV_PERIODIC);
1792 } 2173 }
1793} 2174}
1794 2175
2176/* simply recalculate all periodics */
2177/* TODO: maybe ensure that at least one event happens when jumping forward? */
1795static void noinline 2178static void noinline
1796periodics_reschedule (EV_P) 2179periodics_reschedule (EV_P)
1797{ 2180{
1798 int i; 2181 int i;
1799 2182
… …
1812 2195
1813 reheap (periodics, periodiccnt); 2196 reheap (periodics, periodiccnt);
1814} 2197}
1815#endif 2198#endif
1816 2199
1817void inline_speed 2200/* adjust all timers by a given offset */
2201static void noinline
2202timers_reschedule (EV_P_ ev_tstamp adjust)
2203{
2204 int i;
2205
2206 for (i = 0; i < timercnt; ++i)
2207 {
2208 ANHE *he = timers + i + HEAP0;
2209 ANHE_w (*he)->at += adjust;
2210 ANHE_at_cache (*he);
2211 }
2212}
2213
2214/* fetch new monotonic and realtime times from the kernel */
2215/* also detect if there was a timejump, and act accordingly */
2216inline_speed void
1818time_update (EV_P_ ev_tstamp max_block) 2217time_update (EV_P_ ev_tstamp max_block)
1819{ 2218{
1820 int i;
1821
1822#if EV_USE_MONOTONIC 2219#if EV_USE_MONOTONIC
1823 if (expect_true (have_monotonic)) 2220 if (expect_true (have_monotonic))
1824 { 2221 {
2222 int i;
1825 ev_tstamp odiff = rtmn_diff; 2223 ev_tstamp odiff = rtmn_diff;
1826 2224
1827 mn_now = get_clock (); 2225 mn_now = get_clock ();
1828 2226
1829 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2227 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1855 ev_rt_now = ev_time (); 2253 ev_rt_now = ev_time ();
1856 mn_now = get_clock (); 2254 mn_now = get_clock ();
1857 now_floor = mn_now; 2255 now_floor = mn_now;
1858 } 2256 }
1859 2257
2258 /* no timer adjustment, as the monotonic clock doesn't jump */
2259 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1860# if EV_PERIODIC_ENABLE 2260# if EV_PERIODIC_ENABLE
1861 periodics_reschedule (EV_A); 2261 periodics_reschedule (EV_A);
1862# endif 2262# endif
1863 /* no timer adjustment, as the monotonic clock doesn't jump */
1864 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865 } 2263 }
1866 else 2264 else
1867#endif 2265#endif
1868 { 2266 {
1869 ev_rt_now = ev_time (); 2267 ev_rt_now = ev_time ();
1870 2268
1871 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2269 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1872 { 2270 {
2271 /* adjust timers. this is easy, as the offset is the same for all of them */
2272 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1873#if EV_PERIODIC_ENABLE 2273#if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 2274 periodics_reschedule (EV_A);
1875#endif 2275#endif
1876 /* adjust timers. this is easy, as the offset is the same for all of them */
1877 for (i = 0; i < timercnt; ++i)
1878 {
1879 ANHE *he = timers + i + HEAP0;
1880 ANHE_w (*he)->at += ev_rt_now - mn_now;
1881 ANHE_at_cache (*he);
1882 }
1883 } 2276 }
1884 2277
1885 mn_now = ev_rt_now; 2278 mn_now = ev_rt_now;
1886 } 2279 }
1887} 2280}
1888 2281
1889void 2282void
1890ev_ref (EV_P)
1891{
1892 ++activecnt;
1893}
1894
1895void
1896ev_unref (EV_P)
1897{
1898 --activecnt;
1899}
1900
1901static int loop_done;
1902
1903void
1904ev_loop (EV_P_ int flags) 2283ev_run (EV_P_ int flags)
1905{ 2284{
2285#if EV_FEATURE_API
2286 ++loop_depth;
2287#endif
2288
2289 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2290
1906 loop_done = EVUNLOOP_CANCEL; 2291 loop_done = EVBREAK_CANCEL;
1907 2292
1908 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2293 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1909 2294
1910 do 2295 do
1911 { 2296 {
1912#if EV_VERIFY >= 2 2297#if EV_VERIFY >= 2
1913 ev_loop_verify (EV_A); 2298 ev_verify (EV_A);
1914#endif 2299#endif
1915 2300
1916#ifndef _WIN32 2301#ifndef _WIN32
1917 if (expect_false (curpid)) /* penalise the forking check even more */ 2302 if (expect_false (curpid)) /* penalise the forking check even more */
1918 if (expect_false (getpid () != curpid)) 2303 if (expect_false (getpid () != curpid))
… …
1926 /* we might have forked, so queue fork handlers */ 2311 /* we might have forked, so queue fork handlers */
1927 if (expect_false (postfork)) 2312 if (expect_false (postfork))
1928 if (forkcnt) 2313 if (forkcnt)
1929 { 2314 {
1930 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2315 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1931 call_pending (EV_A); 2316 EV_INVOKE_PENDING;
1932 } 2317 }
1933#endif 2318#endif
1934 2319
2320#if EV_PREPARE_ENABLE
1935 /* queue prepare watchers (and execute them) */ 2321 /* queue prepare watchers (and execute them) */
1936 if (expect_false (preparecnt)) 2322 if (expect_false (preparecnt))
1937 { 2323 {
1938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2324 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1939 call_pending (EV_A); 2325 EV_INVOKE_PENDING;
1940 } 2326 }
2327#endif
1941 2328
1942 if (expect_false (!activecnt)) 2329 if (expect_false (loop_done))
1943 break; 2330 break;
1944 2331
1945 /* we might have forked, so reify kernel state if necessary */ 2332 /* we might have forked, so reify kernel state if necessary */
1946 if (expect_false (postfork)) 2333 if (expect_false (postfork))
1947 loop_fork (EV_A); 2334 loop_fork (EV_A);
… …
1952 /* calculate blocking time */ 2339 /* calculate blocking time */
1953 { 2340 {
1954 ev_tstamp waittime = 0.; 2341 ev_tstamp waittime = 0.;
1955 ev_tstamp sleeptime = 0.; 2342 ev_tstamp sleeptime = 0.;
1956 2343
2344 /* remember old timestamp for io_blocktime calculation */
2345 ev_tstamp prev_mn_now = mn_now;
2346
2347 /* update time to cancel out callback processing overhead */
2348 time_update (EV_A_ 1e100);
2349
1957 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2350 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1958 { 2351 {
1959 /* update time to cancel out callback processing overhead */
1960 time_update (EV_A_ 1e100);
1961
1962 waittime = MAX_BLOCKTIME; 2352 waittime = MAX_BLOCKTIME;
1963 2353
1964 if (timercnt) 2354 if (timercnt)
1965 { 2355 {
1966 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2356 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1973 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2363 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1974 if (waittime > to) waittime = to; 2364 if (waittime > to) waittime = to;
1975 } 2365 }
1976#endif 2366#endif
1977 2367
2368 /* don't let timeouts decrease the waittime below timeout_blocktime */
1978 if (expect_false (waittime < timeout_blocktime)) 2369 if (expect_false (waittime < timeout_blocktime))
1979 waittime = timeout_blocktime; 2370 waittime = timeout_blocktime;
1980 2371
1981 sleeptime = waittime - backend_fudge; 2372 /* extra check because io_blocktime is commonly 0 */
1982
1983 if (expect_true (sleeptime > io_blocktime)) 2373 if (expect_false (io_blocktime))
1984 sleeptime = io_blocktime;
1985
1986 if (sleeptime)
1987 { 2374 {
2375 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2376
2377 if (sleeptime > waittime - backend_fudge)
2378 sleeptime = waittime - backend_fudge;
2379
2380 if (expect_true (sleeptime > 0.))
2381 {
1988 ev_sleep (sleeptime); 2382 ev_sleep (sleeptime);
1989 waittime -= sleeptime; 2383 waittime -= sleeptime;
2384 }
1990 } 2385 }
1991 } 2386 }
1992 2387
2388#if EV_FEATURE_API
1993 ++loop_count; 2389 ++loop_count;
2390#endif
2391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1994 backend_poll (EV_A_ waittime); 2392 backend_poll (EV_A_ waittime);
2393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1995 2394
1996 /* update ev_rt_now, do magic */ 2395 /* update ev_rt_now, do magic */
1997 time_update (EV_A_ waittime + sleeptime); 2396 time_update (EV_A_ waittime + sleeptime);
1998 } 2397 }
1999 2398
… …
2006#if EV_IDLE_ENABLE 2405#if EV_IDLE_ENABLE
2007 /* queue idle watchers unless other events are pending */ 2406 /* queue idle watchers unless other events are pending */
2008 idle_reify (EV_A); 2407 idle_reify (EV_A);
2009#endif 2408#endif
2010 2409
2410#if EV_CHECK_ENABLE
2011 /* queue check watchers, to be executed first */ 2411 /* queue check watchers, to be executed first */
2012 if (expect_false (checkcnt)) 2412 if (expect_false (checkcnt))
2013 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2413 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2414#endif
2014 2415
2015 call_pending (EV_A); 2416 EV_INVOKE_PENDING;
2016 } 2417 }
2017 while (expect_true ( 2418 while (expect_true (
2018 activecnt 2419 activecnt
2019 && !loop_done 2420 && !loop_done
2020 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2421 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2021 )); 2422 ));
2022 2423
2023 if (loop_done == EVUNLOOP_ONE) 2424 if (loop_done == EVBREAK_ONE)
2024 loop_done = EVUNLOOP_CANCEL; 2425 loop_done = EVBREAK_CANCEL;
2025}
2026 2426
2427#if EV_FEATURE_API
2428 --loop_depth;
2429#endif
2430}
2431
2027void 2432void
2028ev_unloop (EV_P_ int how) 2433ev_break (EV_P_ int how)
2029{ 2434{
2030 loop_done = how; 2435 loop_done = how;
2031} 2436}
2032 2437
2438void
2439ev_ref (EV_P)
2440{
2441 ++activecnt;
2442}
2443
2444void
2445ev_unref (EV_P)
2446{
2447 --activecnt;
2448}
2449
2450void
2451ev_now_update (EV_P)
2452{
2453 time_update (EV_A_ 1e100);
2454}
2455
2456void
2457ev_suspend (EV_P)
2458{
2459 ev_now_update (EV_A);
2460}
2461
2462void
2463ev_resume (EV_P)
2464{
2465 ev_tstamp mn_prev = mn_now;
2466
2467 ev_now_update (EV_A);
2468 timers_reschedule (EV_A_ mn_now - mn_prev);
2469#if EV_PERIODIC_ENABLE
2470 /* TODO: really do this? */
2471 periodics_reschedule (EV_A);
2472#endif
2473}
2474
2033/*****************************************************************************/ 2475/*****************************************************************************/
2476/* singly-linked list management, used when the expected list length is short */
2034 2477
2035void inline_size 2478inline_size void
2036wlist_add (WL *head, WL elem) 2479wlist_add (WL *head, WL elem)
2037{ 2480{
2038 elem->next = *head; 2481 elem->next = *head;
2039 *head = elem; 2482 *head = elem;
2040} 2483}
2041 2484
2042void inline_size 2485inline_size void
2043wlist_del (WL *head, WL elem) 2486wlist_del (WL *head, WL elem)
2044{ 2487{
2045 while (*head) 2488 while (*head)
2046 { 2489 {
2047 if (*head == elem) 2490 if (expect_true (*head == elem))
2048 { 2491 {
2049 *head = elem->next; 2492 *head = elem->next;
2050 return; 2493 break;
2051 } 2494 }
2052 2495
2053 head = &(*head)->next; 2496 head = &(*head)->next;
2054 } 2497 }
2055} 2498}
2056 2499
2057void inline_speed 2500/* internal, faster, version of ev_clear_pending */
2501inline_speed void
2058clear_pending (EV_P_ W w) 2502clear_pending (EV_P_ W w)
2059{ 2503{
2060 if (w->pending) 2504 if (w->pending)
2061 { 2505 {
2062 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2506 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2063 w->pending = 0; 2507 w->pending = 0;
2064 } 2508 }
2065} 2509}
2066 2510
2067int 2511int
… …
2071 int pending = w_->pending; 2515 int pending = w_->pending;
2072 2516
2073 if (expect_true (pending)) 2517 if (expect_true (pending))
2074 { 2518 {
2075 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2519 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2520 p->w = (W)&pending_w;
2076 w_->pending = 0; 2521 w_->pending = 0;
2077 p->w = 0;
2078 return p->events; 2522 return p->events;
2079 } 2523 }
2080 else 2524 else
2081 return 0; 2525 return 0;
2082} 2526}
2083 2527
2084void inline_size 2528inline_size void
2085pri_adjust (EV_P_ W w) 2529pri_adjust (EV_P_ W w)
2086{ 2530{
2087 int pri = w->priority; 2531 int pri = ev_priority (w);
2088 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2532 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2089 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2533 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2090 w->priority = pri; 2534 ev_set_priority (w, pri);
2091} 2535}
2092 2536
2093void inline_speed 2537inline_speed void
2094ev_start (EV_P_ W w, int active) 2538ev_start (EV_P_ W w, int active)
2095{ 2539{
2096 pri_adjust (EV_A_ w); 2540 pri_adjust (EV_A_ w);
2097 w->active = active; 2541 w->active = active;
2098 ev_ref (EV_A); 2542 ev_ref (EV_A);
2099} 2543}
2100 2544
2101void inline_size 2545inline_size void
2102ev_stop (EV_P_ W w) 2546ev_stop (EV_P_ W w)
2103{ 2547{
2104 ev_unref (EV_A); 2548 ev_unref (EV_A);
2105 w->active = 0; 2549 w->active = 0;
2106} 2550}
… …
2113 int fd = w->fd; 2557 int fd = w->fd;
2114 2558
2115 if (expect_false (ev_is_active (w))) 2559 if (expect_false (ev_is_active (w)))
2116 return; 2560 return;
2117 2561
2118 assert (("ev_io_start called with negative fd", fd >= 0)); 2562 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2563 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2119 2564
2120 EV_FREQUENT_CHECK; 2565 EV_FREQUENT_CHECK;
2121 2566
2122 ev_start (EV_A_ (W)w, 1); 2567 ev_start (EV_A_ (W)w, 1);
2123 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2568 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2124 wlist_add (&anfds[fd].head, (WL)w); 2569 wlist_add (&anfds[fd].head, (WL)w);
2125 2570
2126 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2571 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2127 w->events &= ~EV_IOFDSET; 2572 w->events &= ~EV__IOFDSET;
2128 2573
2129 EV_FREQUENT_CHECK; 2574 EV_FREQUENT_CHECK;
2130} 2575}
2131 2576
2132void noinline 2577void noinline
… …
2134{ 2579{
2135 clear_pending (EV_A_ (W)w); 2580 clear_pending (EV_A_ (W)w);
2136 if (expect_false (!ev_is_active (w))) 2581 if (expect_false (!ev_is_active (w)))
2137 return; 2582 return;
2138 2583
2139 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2584 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2140 2585
2141 EV_FREQUENT_CHECK; 2586 EV_FREQUENT_CHECK;
2142 2587
2143 wlist_del (&anfds[w->fd].head, (WL)w); 2588 wlist_del (&anfds[w->fd].head, (WL)w);
2144 ev_stop (EV_A_ (W)w); 2589 ev_stop (EV_A_ (W)w);
2145 2590
2146 fd_change (EV_A_ w->fd, 1); 2591 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2147 2592
2148 EV_FREQUENT_CHECK; 2593 EV_FREQUENT_CHECK;
2149} 2594}
2150 2595
2151void noinline 2596void noinline
… …
2154 if (expect_false (ev_is_active (w))) 2599 if (expect_false (ev_is_active (w)))
2155 return; 2600 return;
2156 2601
2157 ev_at (w) += mn_now; 2602 ev_at (w) += mn_now;
2158 2603
2159 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2604 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2160 2605
2161 EV_FREQUENT_CHECK; 2606 EV_FREQUENT_CHECK;
2162 2607
2163 ++timercnt; 2608 ++timercnt;
2164 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2609 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2167 ANHE_at_cache (timers [ev_active (w)]); 2612 ANHE_at_cache (timers [ev_active (w)]);
2168 upheap (timers, ev_active (w)); 2613 upheap (timers, ev_active (w));
2169 2614
2170 EV_FREQUENT_CHECK; 2615 EV_FREQUENT_CHECK;
2171 2616
2172 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2617 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2173} 2618}
2174 2619
2175void noinline 2620void noinline
2176ev_timer_stop (EV_P_ ev_timer *w) 2621ev_timer_stop (EV_P_ ev_timer *w)
2177{ 2622{
… …
2182 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
2183 2628
2184 { 2629 {
2185 int active = ev_active (w); 2630 int active = ev_active (w);
2186 2631
2187 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2632 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2188 2633
2189 --timercnt; 2634 --timercnt;
2190 2635
2191 if (expect_true (active < timercnt + HEAP0)) 2636 if (expect_true (active < timercnt + HEAP0))
2192 { 2637 {
2193 timers [active] = timers [timercnt + HEAP0]; 2638 timers [active] = timers [timercnt + HEAP0];
2194 adjustheap (timers, timercnt, active); 2639 adjustheap (timers, timercnt, active);
2195 } 2640 }
2196 } 2641 }
2197 2642
2198 EV_FREQUENT_CHECK;
2199
2200 ev_at (w) -= mn_now; 2643 ev_at (w) -= mn_now;
2201 2644
2202 ev_stop (EV_A_ (W)w); 2645 ev_stop (EV_A_ (W)w);
2646
2647 EV_FREQUENT_CHECK;
2203} 2648}
2204 2649
2205void noinline 2650void noinline
2206ev_timer_again (EV_P_ ev_timer *w) 2651ev_timer_again (EV_P_ ev_timer *w)
2207{ 2652{
… …
2225 } 2670 }
2226 2671
2227 EV_FREQUENT_CHECK; 2672 EV_FREQUENT_CHECK;
2228} 2673}
2229 2674
2675ev_tstamp
2676ev_timer_remaining (EV_P_ ev_timer *w)
2677{
2678 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2679}
2680
2230#if EV_PERIODIC_ENABLE 2681#if EV_PERIODIC_ENABLE
2231void noinline 2682void noinline
2232ev_periodic_start (EV_P_ ev_periodic *w) 2683ev_periodic_start (EV_P_ ev_periodic *w)
2233{ 2684{
2234 if (expect_false (ev_is_active (w))) 2685 if (expect_false (ev_is_active (w)))
… …
2236 2687
2237 if (w->reschedule_cb) 2688 if (w->reschedule_cb)
2238 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2689 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2239 else if (w->interval) 2690 else if (w->interval)
2240 { 2691 {
2241 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2692 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2242 /* this formula differs from the one in periodic_reify because we do not always round up */ 2693 /* this formula differs from the one in periodic_reify because we do not always round up */
2243 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2694 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2244 } 2695 }
2245 else 2696 else
2246 ev_at (w) = w->offset; 2697 ev_at (w) = w->offset;
… …
2254 ANHE_at_cache (periodics [ev_active (w)]); 2705 ANHE_at_cache (periodics [ev_active (w)]);
2255 upheap (periodics, ev_active (w)); 2706 upheap (periodics, ev_active (w));
2256 2707
2257 EV_FREQUENT_CHECK; 2708 EV_FREQUENT_CHECK;
2258 2709
2259 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2710 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2260} 2711}
2261 2712
2262void noinline 2713void noinline
2263ev_periodic_stop (EV_P_ ev_periodic *w) 2714ev_periodic_stop (EV_P_ ev_periodic *w)
2264{ 2715{
… …
2269 EV_FREQUENT_CHECK; 2720 EV_FREQUENT_CHECK;
2270 2721
2271 { 2722 {
2272 int active = ev_active (w); 2723 int active = ev_active (w);
2273 2724
2274 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2725 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2275 2726
2276 --periodiccnt; 2727 --periodiccnt;
2277 2728
2278 if (expect_true (active < periodiccnt + HEAP0)) 2729 if (expect_true (active < periodiccnt + HEAP0))
2279 { 2730 {
2280 periodics [active] = periodics [periodiccnt + HEAP0]; 2731 periodics [active] = periodics [periodiccnt + HEAP0];
2281 adjustheap (periodics, periodiccnt, active); 2732 adjustheap (periodics, periodiccnt, active);
2282 } 2733 }
2283 } 2734 }
2284 2735
2285 EV_FREQUENT_CHECK;
2286
2287 ev_stop (EV_A_ (W)w); 2736 ev_stop (EV_A_ (W)w);
2737
2738 EV_FREQUENT_CHECK;
2288} 2739}
2289 2740
2290void noinline 2741void noinline
2291ev_periodic_again (EV_P_ ev_periodic *w) 2742ev_periodic_again (EV_P_ ev_periodic *w)
2292{ 2743{
… …
2298 2749
2299#ifndef SA_RESTART 2750#ifndef SA_RESTART
2300# define SA_RESTART 0 2751# define SA_RESTART 0
2301#endif 2752#endif
2302 2753
2754#if EV_SIGNAL_ENABLE
2755
2303void noinline 2756void noinline
2304ev_signal_start (EV_P_ ev_signal *w) 2757ev_signal_start (EV_P_ ev_signal *w)
2305{ 2758{
2306#if EV_MULTIPLICITY
2307 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2308#endif
2309 if (expect_false (ev_is_active (w))) 2759 if (expect_false (ev_is_active (w)))
2310 return; 2760 return;
2311 2761
2312 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2762 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2313 2763
2314 evpipe_init (EV_A); 2764#if EV_MULTIPLICITY
2765 assert (("libev: a signal must not be attached to two different loops",
2766 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2315 2767
2316 EV_FREQUENT_CHECK; 2768 signals [w->signum - 1].loop = EV_A;
2769#endif
2317 2770
2771 EV_FREQUENT_CHECK;
2772
2773#if EV_USE_SIGNALFD
2774 if (sigfd == -2)
2318 { 2775 {
2319#ifndef _WIN32 2776 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2320 sigset_t full, prev; 2777 if (sigfd < 0 && errno == EINVAL)
2321 sigfillset (&full); 2778 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2322 sigprocmask (SIG_SETMASK, &full, &prev);
2323#endif
2324 2779
2325 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2780 if (sigfd >= 0)
2781 {
2782 fd_intern (sigfd); /* doing it twice will not hurt */
2326 2783
2327#ifndef _WIN32 2784 sigemptyset (&sigfd_set);
2328 sigprocmask (SIG_SETMASK, &prev, 0); 2785
2329#endif 2786 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2787 ev_set_priority (&sigfd_w, EV_MAXPRI);
2788 ev_io_start (EV_A_ &sigfd_w);
2789 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2790 }
2330 } 2791 }
2792
2793 if (sigfd >= 0)
2794 {
2795 /* TODO: check .head */
2796 sigaddset (&sigfd_set, w->signum);
2797 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2798
2799 signalfd (sigfd, &sigfd_set, 0);
2800 }
2801#endif
2331 2802
2332 ev_start (EV_A_ (W)w, 1); 2803 ev_start (EV_A_ (W)w, 1);
2333 wlist_add (&signals [w->signum - 1].head, (WL)w); 2804 wlist_add (&signals [w->signum - 1].head, (WL)w);
2334 2805
2335 if (!((WL)w)->next) 2806 if (!((WL)w)->next)
2807# if EV_USE_SIGNALFD
2808 if (sigfd < 0) /*TODO*/
2809# endif
2336 { 2810 {
2337#if _WIN32 2811# ifdef _WIN32
2812 evpipe_init (EV_A);
2813
2338 signal (w->signum, ev_sighandler); 2814 signal (w->signum, ev_sighandler);
2339#else 2815# else
2340 struct sigaction sa; 2816 struct sigaction sa;
2817
2818 evpipe_init (EV_A);
2819
2341 sa.sa_handler = ev_sighandler; 2820 sa.sa_handler = ev_sighandler;
2342 sigfillset (&sa.sa_mask); 2821 sigfillset (&sa.sa_mask);
2343 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2822 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2344 sigaction (w->signum, &sa, 0); 2823 sigaction (w->signum, &sa, 0);
2824
2825 sigemptyset (&sa.sa_mask);
2826 sigaddset (&sa.sa_mask, w->signum);
2827 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2345#endif 2828#endif
2346 } 2829 }
2347 2830
2348 EV_FREQUENT_CHECK; 2831 EV_FREQUENT_CHECK;
2349} 2832}
2350 2833
2351void noinline 2834void noinline
… …
2359 2842
2360 wlist_del (&signals [w->signum - 1].head, (WL)w); 2843 wlist_del (&signals [w->signum - 1].head, (WL)w);
2361 ev_stop (EV_A_ (W)w); 2844 ev_stop (EV_A_ (W)w);
2362 2845
2363 if (!signals [w->signum - 1].head) 2846 if (!signals [w->signum - 1].head)
2847 {
2848#if EV_MULTIPLICITY
2849 signals [w->signum - 1].loop = 0; /* unattach from signal */
2850#endif
2851#if EV_USE_SIGNALFD
2852 if (sigfd >= 0)
2853 {
2854 sigset_t ss;
2855
2856 sigemptyset (&ss);
2857 sigaddset (&ss, w->signum);
2858 sigdelset (&sigfd_set, w->signum);
2859
2860 signalfd (sigfd, &sigfd_set, 0);
2861 sigprocmask (SIG_UNBLOCK, &ss, 0);
2862 }
2863 else
2864#endif
2364 signal (w->signum, SIG_DFL); 2865 signal (w->signum, SIG_DFL);
2866 }
2365 2867
2366 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
2367} 2869}
2870
2871#endif
2872
2873#if EV_CHILD_ENABLE
2368 2874
2369void 2875void
2370ev_child_start (EV_P_ ev_child *w) 2876ev_child_start (EV_P_ ev_child *w)
2371{ 2877{
2372#if EV_MULTIPLICITY 2878#if EV_MULTIPLICITY
2373 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2879 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2374#endif 2880#endif
2375 if (expect_false (ev_is_active (w))) 2881 if (expect_false (ev_is_active (w)))
2376 return; 2882 return;
2377 2883
2378 EV_FREQUENT_CHECK; 2884 EV_FREQUENT_CHECK;
2379 2885
2380 ev_start (EV_A_ (W)w, 1); 2886 ev_start (EV_A_ (W)w, 1);
2381 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2887 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2382 2888
2383 EV_FREQUENT_CHECK; 2889 EV_FREQUENT_CHECK;
2384} 2890}
2385 2891
2386void 2892void
… …
2390 if (expect_false (!ev_is_active (w))) 2896 if (expect_false (!ev_is_active (w)))
2391 return; 2897 return;
2392 2898
2393 EV_FREQUENT_CHECK; 2899 EV_FREQUENT_CHECK;
2394 2900
2395 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2901 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2396 ev_stop (EV_A_ (W)w); 2902 ev_stop (EV_A_ (W)w);
2397 2903
2398 EV_FREQUENT_CHECK; 2904 EV_FREQUENT_CHECK;
2399} 2905}
2906
2907#endif
2400 2908
2401#if EV_STAT_ENABLE 2909#if EV_STAT_ENABLE
2402 2910
2403# ifdef _WIN32 2911# ifdef _WIN32
2404# undef lstat 2912# undef lstat
2405# define lstat(a,b) _stati64 (a,b) 2913# define lstat(a,b) _stati64 (a,b)
2406# endif 2914# endif
2407 2915
2408#define DEF_STAT_INTERVAL 5.0074891 2916#define DEF_STAT_INTERVAL 5.0074891
2917#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2409#define MIN_STAT_INTERVAL 0.1074891 2918#define MIN_STAT_INTERVAL 0.1074891
2410 2919
2411static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2920static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2412 2921
2413#if EV_USE_INOTIFY 2922#if EV_USE_INOTIFY
2414# define EV_INOTIFY_BUFSIZE 8192 2923
2924/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2925# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2415 2926
2416static void noinline 2927static void noinline
2417infy_add (EV_P_ ev_stat *w) 2928infy_add (EV_P_ ev_stat *w)
2418{ 2929{
2419 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); 2930 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);
2420 2931
2421 if (w->wd < 0) 2932 if (w->wd >= 0)
2933 {
2934 struct statfs sfs;
2935
2936 /* now local changes will be tracked by inotify, but remote changes won't */
2937 /* unless the filesystem is known to be local, we therefore still poll */
2938 /* also do poll on <2.6.25, but with normal frequency */
2939
2940 if (!fs_2625)
2941 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2942 else if (!statfs (w->path, &sfs)
2943 && (sfs.f_type == 0x1373 /* devfs */
2944 || sfs.f_type == 0xEF53 /* ext2/3 */
2945 || sfs.f_type == 0x3153464a /* jfs */
2946 || sfs.f_type == 0x52654973 /* reiser3 */
2947 || sfs.f_type == 0x01021994 /* tempfs */
2948 || sfs.f_type == 0x58465342 /* xfs */))
2949 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2950 else
2951 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2422 { 2952 }
2423 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2953 else
2954 {
2955 /* can't use inotify, continue to stat */
2956 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2424 2957
2425 /* monitor some parent directory for speedup hints */ 2958 /* if path is not there, monitor some parent directory for speedup hints */
2426 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2959 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2427 /* but an efficiency issue only */ 2960 /* but an efficiency issue only */
2428 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2961 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2429 { 2962 {
2430 char path [4096]; 2963 char path [4096];
2431 strcpy (path, w->path); 2964 strcpy (path, w->path);
… …
2435 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2968 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2436 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2969 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2437 2970
2438 char *pend = strrchr (path, '/'); 2971 char *pend = strrchr (path, '/');
2439 2972
2440 if (!pend) 2973 if (!pend || pend == path)
2441 break; /* whoops, no '/', complain to your admin */ 2974 break;
2442 2975
2443 *pend = 0; 2976 *pend = 0;
2444 w->wd = inotify_add_watch (fs_fd, path, mask); 2977 w->wd = inotify_add_watch (fs_fd, path, mask);
2445 } 2978 }
2446 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2979 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2447 } 2980 }
2448 } 2981 }
2449 else
2450 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2451 2982
2452 if (w->wd >= 0) 2983 if (w->wd >= 0)
2453 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2984 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2985
2986 /* now re-arm timer, if required */
2987 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2988 ev_timer_again (EV_A_ &w->timer);
2989 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2454} 2990}
2455 2991
2456static void noinline 2992static void noinline
2457infy_del (EV_P_ ev_stat *w) 2993infy_del (EV_P_ ev_stat *w)
2458{ 2994{
… …
2461 2997
2462 if (wd < 0) 2998 if (wd < 0)
2463 return; 2999 return;
2464 3000
2465 w->wd = -2; 3001 w->wd = -2;
2466 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3002 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2467 wlist_del (&fs_hash [slot].head, (WL)w); 3003 wlist_del (&fs_hash [slot].head, (WL)w);
2468 3004
2469 /* remove this watcher, if others are watching it, they will rearm */ 3005 /* remove this watcher, if others are watching it, they will rearm */
2470 inotify_rm_watch (fs_fd, wd); 3006 inotify_rm_watch (fs_fd, wd);
2471} 3007}
2472 3008
2473static void noinline 3009static void noinline
2474infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3010infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2475{ 3011{
2476 if (slot < 0) 3012 if (slot < 0)
2477 /* overflow, need to check for all hahs slots */ 3013 /* overflow, need to check for all hash slots */
2478 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3014 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2479 infy_wd (EV_A_ slot, wd, ev); 3015 infy_wd (EV_A_ slot, wd, ev);
2480 else 3016 else
2481 { 3017 {
2482 WL w_; 3018 WL w_;
2483 3019
2484 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3020 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2485 { 3021 {
2486 ev_stat *w = (ev_stat *)w_; 3022 ev_stat *w = (ev_stat *)w_;
2487 w_ = w_->next; /* lets us remove this watcher and all before it */ 3023 w_ = w_->next; /* lets us remove this watcher and all before it */
2488 3024
2489 if (w->wd == wd || wd == -1) 3025 if (w->wd == wd || wd == -1)
2490 { 3026 {
2491 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3027 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2492 { 3028 {
3029 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2493 w->wd = -1; 3030 w->wd = -1;
2494 infy_add (EV_A_ w); /* re-add, no matter what */ 3031 infy_add (EV_A_ w); /* re-add, no matter what */
2495 } 3032 }
2496 3033
2497 stat_timer_cb (EV_A_ &w->timer, 0); 3034 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2502 3039
2503static void 3040static void
2504infy_cb (EV_P_ ev_io *w, int revents) 3041infy_cb (EV_P_ ev_io *w, int revents)
2505{ 3042{
2506 char buf [EV_INOTIFY_BUFSIZE]; 3043 char buf [EV_INOTIFY_BUFSIZE];
2507 struct inotify_event *ev = (struct inotify_event *)buf;
2508 int ofs; 3044 int ofs;
2509 int len = read (fs_fd, buf, sizeof (buf)); 3045 int len = read (fs_fd, buf, sizeof (buf));
2510 3046
2511 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3047 for (ofs = 0; ofs < len; )
3048 {
3049 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2512 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3050 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3051 ofs += sizeof (struct inotify_event) + ev->len;
3052 }
2513} 3053}
2514 3054
2515void inline_size 3055inline_size unsigned int
3056ev_linux_version (void)
3057{
3058 struct utsname buf;
3059 unsigned int v;
3060 int i;
3061 char *p = buf.release;
3062
3063 if (uname (&buf))
3064 return 0;
3065
3066 for (i = 3+1; --i; )
3067 {
3068 unsigned int c = 0;
3069
3070 for (;;)
3071 {
3072 if (*p >= '0' && *p <= '9')
3073 c = c * 10 + *p++ - '0';
3074 else
3075 {
3076 p += *p == '.';
3077 break;
3078 }
3079 }
3080
3081 v = (v << 8) | c;
3082 }
3083
3084 return v;
3085}
3086
3087inline_size void
3088ev_check_2625 (EV_P)
3089{
3090 /* kernels < 2.6.25 are borked
3091 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3092 */
3093 if (ev_linux_version () < 0x020619)
3094 return;
3095
3096 fs_2625 = 1;
3097}
3098
3099inline_size int
3100infy_newfd (void)
3101{
3102#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3104 if (fd >= 0)
3105 return fd;
3106#endif
3107 return inotify_init ();
3108}
3109
3110inline_size void
2516infy_init (EV_P) 3111infy_init (EV_P)
2517{ 3112{
2518 if (fs_fd != -2) 3113 if (fs_fd != -2)
2519 return; 3114 return;
2520 3115
3116 fs_fd = -1;
3117
3118 ev_check_2625 (EV_A);
3119
2521 fs_fd = inotify_init (); 3120 fs_fd = infy_newfd ();
2522 3121
2523 if (fs_fd >= 0) 3122 if (fs_fd >= 0)
2524 { 3123 {
3124 fd_intern (fs_fd);
2525 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3125 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2526 ev_set_priority (&fs_w, EV_MAXPRI); 3126 ev_set_priority (&fs_w, EV_MAXPRI);
2527 ev_io_start (EV_A_ &fs_w); 3127 ev_io_start (EV_A_ &fs_w);
3128 ev_unref (EV_A);
2528 } 3129 }
2529} 3130}
2530 3131
2531void inline_size 3132inline_size void
2532infy_fork (EV_P) 3133infy_fork (EV_P)
2533{ 3134{
2534 int slot; 3135 int slot;
2535 3136
2536 if (fs_fd < 0) 3137 if (fs_fd < 0)
2537 return; 3138 return;
2538 3139
3140 ev_ref (EV_A);
3141 ev_io_stop (EV_A_ &fs_w);
2539 close (fs_fd); 3142 close (fs_fd);
2540 fs_fd = inotify_init (); 3143 fs_fd = infy_newfd ();
2541 3144
3145 if (fs_fd >= 0)
3146 {
3147 fd_intern (fs_fd);
3148 ev_io_set (&fs_w, fs_fd, EV_READ);
3149 ev_io_start (EV_A_ &fs_w);
3150 ev_unref (EV_A);
3151 }
3152
2542 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3153 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2543 { 3154 {
2544 WL w_ = fs_hash [slot].head; 3155 WL w_ = fs_hash [slot].head;
2545 fs_hash [slot].head = 0; 3156 fs_hash [slot].head = 0;
2546 3157
2547 while (w_) 3158 while (w_)
… …
2552 w->wd = -1; 3163 w->wd = -1;
2553 3164
2554 if (fs_fd >= 0) 3165 if (fs_fd >= 0)
2555 infy_add (EV_A_ w); /* re-add, no matter what */ 3166 infy_add (EV_A_ w); /* re-add, no matter what */
2556 else 3167 else
3168 {
3169 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3170 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2557 ev_timer_start (EV_A_ &w->timer); 3171 ev_timer_again (EV_A_ &w->timer);
3172 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3173 }
2558 } 3174 }
2559
2560 } 3175 }
2561} 3176}
2562 3177
3178#endif
3179
3180#ifdef _WIN32
3181# define EV_LSTAT(p,b) _stati64 (p, b)
3182#else
3183# define EV_LSTAT(p,b) lstat (p, b)
2563#endif 3184#endif
2564 3185
2565void 3186void
2566ev_stat_stat (EV_P_ ev_stat *w) 3187ev_stat_stat (EV_P_ ev_stat *w)
2567{ 3188{
… …
2574static void noinline 3195static void noinline
2575stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3196stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2576{ 3197{
2577 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3198 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2578 3199
2579 /* we copy this here each the time so that */ 3200 ev_statdata prev = w->attr;
2580 /* prev has the old value when the callback gets invoked */
2581 w->prev = w->attr;
2582 ev_stat_stat (EV_A_ w); 3201 ev_stat_stat (EV_A_ w);
2583 3202
2584 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3203 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2585 if ( 3204 if (
2586 w->prev.st_dev != w->attr.st_dev 3205 prev.st_dev != w->attr.st_dev
2587 || w->prev.st_ino != w->attr.st_ino 3206 || prev.st_ino != w->attr.st_ino
2588 || w->prev.st_mode != w->attr.st_mode 3207 || prev.st_mode != w->attr.st_mode
2589 || w->prev.st_nlink != w->attr.st_nlink 3208 || prev.st_nlink != w->attr.st_nlink
2590 || w->prev.st_uid != w->attr.st_uid 3209 || prev.st_uid != w->attr.st_uid
2591 || w->prev.st_gid != w->attr.st_gid 3210 || prev.st_gid != w->attr.st_gid
2592 || w->prev.st_rdev != w->attr.st_rdev 3211 || prev.st_rdev != w->attr.st_rdev
2593 || w->prev.st_size != w->attr.st_size 3212 || prev.st_size != w->attr.st_size
2594 || w->prev.st_atime != w->attr.st_atime 3213 || prev.st_atime != w->attr.st_atime
2595 || w->prev.st_mtime != w->attr.st_mtime 3214 || prev.st_mtime != w->attr.st_mtime
2596 || w->prev.st_ctime != w->attr.st_ctime 3215 || prev.st_ctime != w->attr.st_ctime
2597 ) { 3216 ) {
3217 /* we only update w->prev on actual differences */
3218 /* in case we test more often than invoke the callback, */
3219 /* to ensure that prev is always different to attr */
3220 w->prev = prev;
3221
2598 #if EV_USE_INOTIFY 3222 #if EV_USE_INOTIFY
3223 if (fs_fd >= 0)
3224 {
2599 infy_del (EV_A_ w); 3225 infy_del (EV_A_ w);
2600 infy_add (EV_A_ w); 3226 infy_add (EV_A_ w);
2601 ev_stat_stat (EV_A_ w); /* avoid race... */ 3227 ev_stat_stat (EV_A_ w); /* avoid race... */
3228 }
2602 #endif 3229 #endif
2603 3230
2604 ev_feed_event (EV_A_ w, EV_STAT); 3231 ev_feed_event (EV_A_ w, EV_STAT);
2605 } 3232 }
2606} 3233}
… …
2609ev_stat_start (EV_P_ ev_stat *w) 3236ev_stat_start (EV_P_ ev_stat *w)
2610{ 3237{
2611 if (expect_false (ev_is_active (w))) 3238 if (expect_false (ev_is_active (w)))
2612 return; 3239 return;
2613 3240
2614 /* since we use memcmp, we need to clear any padding data etc. */
2615 memset (&w->prev, 0, sizeof (ev_statdata));
2616 memset (&w->attr, 0, sizeof (ev_statdata));
2617
2618 ev_stat_stat (EV_A_ w); 3241 ev_stat_stat (EV_A_ w);
2619 3242
3243 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2620 if (w->interval < MIN_STAT_INTERVAL) 3244 w->interval = MIN_STAT_INTERVAL;
2621 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2622 3245
2623 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3246 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2624 ev_set_priority (&w->timer, ev_priority (w)); 3247 ev_set_priority (&w->timer, ev_priority (w));
2625 3248
2626#if EV_USE_INOTIFY 3249#if EV_USE_INOTIFY
2627 infy_init (EV_A); 3250 infy_init (EV_A);
2628 3251
2629 if (fs_fd >= 0) 3252 if (fs_fd >= 0)
2630 infy_add (EV_A_ w); 3253 infy_add (EV_A_ w);
2631 else 3254 else
2632#endif 3255#endif
3256 {
2633 ev_timer_start (EV_A_ &w->timer); 3257 ev_timer_again (EV_A_ &w->timer);
3258 ev_unref (EV_A);
3259 }
2634 3260
2635 ev_start (EV_A_ (W)w, 1); 3261 ev_start (EV_A_ (W)w, 1);
2636 3262
2637 EV_FREQUENT_CHECK; 3263 EV_FREQUENT_CHECK;
2638} 3264}
… …
2647 EV_FREQUENT_CHECK; 3273 EV_FREQUENT_CHECK;
2648 3274
2649#if EV_USE_INOTIFY 3275#if EV_USE_INOTIFY
2650 infy_del (EV_A_ w); 3276 infy_del (EV_A_ w);
2651#endif 3277#endif
3278
3279 if (ev_is_active (&w->timer))
3280 {
3281 ev_ref (EV_A);
2652 ev_timer_stop (EV_A_ &w->timer); 3282 ev_timer_stop (EV_A_ &w->timer);
3283 }
2653 3284
2654 ev_stop (EV_A_ (W)w); 3285 ev_stop (EV_A_ (W)w);
2655 3286
2656 EV_FREQUENT_CHECK; 3287 EV_FREQUENT_CHECK;
2657} 3288}
… …
2702 3333
2703 EV_FREQUENT_CHECK; 3334 EV_FREQUENT_CHECK;
2704} 3335}
2705#endif 3336#endif
2706 3337
3338#if EV_PREPARE_ENABLE
2707void 3339void
2708ev_prepare_start (EV_P_ ev_prepare *w) 3340ev_prepare_start (EV_P_ ev_prepare *w)
2709{ 3341{
2710 if (expect_false (ev_is_active (w))) 3342 if (expect_false (ev_is_active (w)))
2711 return; 3343 return;
… …
2737 3369
2738 ev_stop (EV_A_ (W)w); 3370 ev_stop (EV_A_ (W)w);
2739 3371
2740 EV_FREQUENT_CHECK; 3372 EV_FREQUENT_CHECK;
2741} 3373}
3374#endif
2742 3375
3376#if EV_CHECK_ENABLE
2743void 3377void
2744ev_check_start (EV_P_ ev_check *w) 3378ev_check_start (EV_P_ ev_check *w)
2745{ 3379{
2746 if (expect_false (ev_is_active (w))) 3380 if (expect_false (ev_is_active (w)))
2747 return; 3381 return;
… …
2773 3407
2774 ev_stop (EV_A_ (W)w); 3408 ev_stop (EV_A_ (W)w);
2775 3409
2776 EV_FREQUENT_CHECK; 3410 EV_FREQUENT_CHECK;
2777} 3411}
3412#endif
2778 3413
2779#if EV_EMBED_ENABLE 3414#if EV_EMBED_ENABLE
2780void noinline 3415void noinline
2781ev_embed_sweep (EV_P_ ev_embed *w) 3416ev_embed_sweep (EV_P_ ev_embed *w)
2782{ 3417{
2783 ev_loop (w->other, EVLOOP_NONBLOCK); 3418 ev_run (w->other, EVRUN_NOWAIT);
2784} 3419}
2785 3420
2786static void 3421static void
2787embed_io_cb (EV_P_ ev_io *io, int revents) 3422embed_io_cb (EV_P_ ev_io *io, int revents)
2788{ 3423{
2789 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3424 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2790 3425
2791 if (ev_cb (w)) 3426 if (ev_cb (w))
2792 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3427 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2793 else 3428 else
2794 ev_loop (w->other, EVLOOP_NONBLOCK); 3429 ev_run (w->other, EVRUN_NOWAIT);
2795} 3430}
2796 3431
2797static void 3432static void
2798embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3433embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2799{ 3434{
2800 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3435 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2801 3436
2802 { 3437 {
2803 struct ev_loop *loop = w->other; 3438 EV_P = w->other;
2804 3439
2805 while (fdchangecnt) 3440 while (fdchangecnt)
2806 { 3441 {
2807 fd_reify (EV_A); 3442 fd_reify (EV_A);
2808 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3443 ev_run (EV_A_ EVRUN_NOWAIT);
2809 } 3444 }
2810 } 3445 }
3446}
3447
3448static void
3449embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3450{
3451 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3452
3453 ev_embed_stop (EV_A_ w);
3454
3455 {
3456 EV_P = w->other;
3457
3458 ev_loop_fork (EV_A);
3459 ev_run (EV_A_ EVRUN_NOWAIT);
3460 }
3461
3462 ev_embed_start (EV_A_ w);
2811} 3463}
2812 3464
2813#if 0 3465#if 0
2814static void 3466static void
2815embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3467embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2823{ 3475{
2824 if (expect_false (ev_is_active (w))) 3476 if (expect_false (ev_is_active (w)))
2825 return; 3477 return;
2826 3478
2827 { 3479 {
2828 struct ev_loop *loop = w->other; 3480 EV_P = w->other;
2829 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3481 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2830 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3482 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2831 } 3483 }
2832 3484
2833 EV_FREQUENT_CHECK; 3485 EV_FREQUENT_CHECK;
2834 3486
… …
2837 3489
2838 ev_prepare_init (&w->prepare, embed_prepare_cb); 3490 ev_prepare_init (&w->prepare, embed_prepare_cb);
2839 ev_set_priority (&w->prepare, EV_MINPRI); 3491 ev_set_priority (&w->prepare, EV_MINPRI);
2840 ev_prepare_start (EV_A_ &w->prepare); 3492 ev_prepare_start (EV_A_ &w->prepare);
2841 3493
3494 ev_fork_init (&w->fork, embed_fork_cb);
3495 ev_fork_start (EV_A_ &w->fork);
3496
2842 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3497 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2843 3498
2844 ev_start (EV_A_ (W)w, 1); 3499 ev_start (EV_A_ (W)w, 1);
2845 3500
2846 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
… …
2853 if (expect_false (!ev_is_active (w))) 3508 if (expect_false (!ev_is_active (w)))
2854 return; 3509 return;
2855 3510
2856 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2857 3512
2858 ev_io_stop (EV_A_ &w->io); 3513 ev_io_stop (EV_A_ &w->io);
2859 ev_prepare_stop (EV_A_ &w->prepare); 3514 ev_prepare_stop (EV_A_ &w->prepare);
3515 ev_fork_stop (EV_A_ &w->fork);
2860 3516
2861 ev_stop (EV_A_ (W)w); 3517 ev_stop (EV_A_ (W)w);
2862 3518
2863 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2864} 3520}
… …
2907ev_async_start (EV_P_ ev_async *w) 3563ev_async_start (EV_P_ ev_async *w)
2908{ 3564{
2909 if (expect_false (ev_is_active (w))) 3565 if (expect_false (ev_is_active (w)))
2910 return; 3566 return;
2911 3567
3568 w->sent = 0;
3569
2912 evpipe_init (EV_A); 3570 evpipe_init (EV_A);
2913 3571
2914 EV_FREQUENT_CHECK; 3572 EV_FREQUENT_CHECK;
2915 3573
2916 ev_start (EV_A_ (W)w, ++asynccnt); 3574 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2943 3601
2944void 3602void
2945ev_async_send (EV_P_ ev_async *w) 3603ev_async_send (EV_P_ ev_async *w)
2946{ 3604{
2947 w->sent = 1; 3605 w->sent = 1;
2948 evpipe_write (EV_A_ &gotasync); 3606 evpipe_write (EV_A_ &async_pending);
2949} 3607}
2950#endif 3608#endif
2951 3609
2952/*****************************************************************************/ 3610/*****************************************************************************/
2953 3611
… …
2963once_cb (EV_P_ struct ev_once *once, int revents) 3621once_cb (EV_P_ struct ev_once *once, int revents)
2964{ 3622{
2965 void (*cb)(int revents, void *arg) = once->cb; 3623 void (*cb)(int revents, void *arg) = once->cb;
2966 void *arg = once->arg; 3624 void *arg = once->arg;
2967 3625
2968 ev_io_stop (EV_A_ &once->io); 3626 ev_io_stop (EV_A_ &once->io);
2969 ev_timer_stop (EV_A_ &once->to); 3627 ev_timer_stop (EV_A_ &once->to);
2970 ev_free (once); 3628 ev_free (once);
2971 3629
2972 cb (revents, arg); 3630 cb (revents, arg);
2973} 3631}
2974 3632
2975static void 3633static void
2976once_cb_io (EV_P_ ev_io *w, int revents) 3634once_cb_io (EV_P_ ev_io *w, int revents)
2977{ 3635{
2978 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3636 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3637
3638 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2979} 3639}
2980 3640
2981static void 3641static void
2982once_cb_to (EV_P_ ev_timer *w, int revents) 3642once_cb_to (EV_P_ ev_timer *w, int revents)
2983{ 3643{
2984 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3644 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3645
3646 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2985} 3647}
2986 3648
2987void 3649void
2988ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3650ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2989{ 3651{
2990 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3652 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2991 3653
2992 if (expect_false (!once)) 3654 if (expect_false (!once))
2993 { 3655 {
2994 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3656 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2995 return; 3657 return;
2996 } 3658 }
2997 3659
2998 once->cb = cb; 3660 once->cb = cb;
2999 once->arg = arg; 3661 once->arg = arg;
… …
3011 ev_timer_set (&once->to, timeout, 0.); 3673 ev_timer_set (&once->to, timeout, 0.);
3012 ev_timer_start (EV_A_ &once->to); 3674 ev_timer_start (EV_A_ &once->to);
3013 } 3675 }
3014} 3676}
3015 3677
3678/*****************************************************************************/
3679
3680#if EV_WALK_ENABLE
3681void
3682ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3683{
3684 int i, j;
3685 ev_watcher_list *wl, *wn;
3686
3687 if (types & (EV_IO | EV_EMBED))
3688 for (i = 0; i < anfdmax; ++i)
3689 for (wl = anfds [i].head; wl; )
3690 {
3691 wn = wl->next;
3692
3693#if EV_EMBED_ENABLE
3694 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3695 {
3696 if (types & EV_EMBED)
3697 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3698 }
3699 else
3700#endif
3701#if EV_USE_INOTIFY
3702 if (ev_cb ((ev_io *)wl) == infy_cb)
3703 ;
3704 else
3705#endif
3706 if ((ev_io *)wl != &pipe_w)
3707 if (types & EV_IO)
3708 cb (EV_A_ EV_IO, wl);
3709
3710 wl = wn;
3711 }
3712
3713 if (types & (EV_TIMER | EV_STAT))
3714 for (i = timercnt + HEAP0; i-- > HEAP0; )
3715#if EV_STAT_ENABLE
3716 /*TODO: timer is not always active*/
3717 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3718 {
3719 if (types & EV_STAT)
3720 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3721 }
3722 else
3723#endif
3724 if (types & EV_TIMER)
3725 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3726
3727#if EV_PERIODIC_ENABLE
3728 if (types & EV_PERIODIC)
3729 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3730 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3731#endif
3732
3733#if EV_IDLE_ENABLE
3734 if (types & EV_IDLE)
3735 for (j = NUMPRI; i--; )
3736 for (i = idlecnt [j]; i--; )
3737 cb (EV_A_ EV_IDLE, idles [j][i]);
3738#endif
3739
3740#if EV_FORK_ENABLE
3741 if (types & EV_FORK)
3742 for (i = forkcnt; i--; )
3743 if (ev_cb (forks [i]) != embed_fork_cb)
3744 cb (EV_A_ EV_FORK, forks [i]);
3745#endif
3746
3747#if EV_ASYNC_ENABLE
3748 if (types & EV_ASYNC)
3749 for (i = asynccnt; i--; )
3750 cb (EV_A_ EV_ASYNC, asyncs [i]);
3751#endif
3752
3753#if EV_PREPARE_ENABLE
3754 if (types & EV_PREPARE)
3755 for (i = preparecnt; i--; )
3756# if EV_EMBED_ENABLE
3757 if (ev_cb (prepares [i]) != embed_prepare_cb)
3758# endif
3759 cb (EV_A_ EV_PREPARE, prepares [i]);
3760#endif
3761
3762#if EV_CHECK_ENABLE
3763 if (types & EV_CHECK)
3764 for (i = checkcnt; i--; )
3765 cb (EV_A_ EV_CHECK, checks [i]);
3766#endif
3767
3768#if EV_SIGNAL_ENABLE
3769 if (types & EV_SIGNAL)
3770 for (i = 0; i < EV_NSIG - 1; ++i)
3771 for (wl = signals [i].head; wl; )
3772 {
3773 wn = wl->next;
3774 cb (EV_A_ EV_SIGNAL, wl);
3775 wl = wn;
3776 }
3777#endif
3778
3779#if EV_CHILD_ENABLE
3780 if (types & EV_CHILD)
3781 for (i = (EV_PID_HASHSIZE); i--; )
3782 for (wl = childs [i]; wl; )
3783 {
3784 wn = wl->next;
3785 cb (EV_A_ EV_CHILD, wl);
3786 wl = wn;
3787 }
3788#endif
3789/* EV_STAT 0x00001000 /* stat data changed */
3790/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3791}
3792#endif
3793
3016#if EV_MULTIPLICITY 3794#if EV_MULTIPLICITY
3017 #include "ev_wrap.h" 3795 #include "ev_wrap.h"
3018#endif 3796#endif
3019 3797
3020#ifdef __cplusplus 3798EV_CPP(})
3021}
3022#endif
3023 3799

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