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Comparing libev/ev.c (file contents):
Revision 1.272 by root, Mon Nov 3 12:17:40 2008 UTC vs.
Revision 1.371 by root, Mon Feb 7 21:45:32 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
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>
… …
160# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 192# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
164# endif 195# endif
196# undef EV_AVOID_STDIO
165#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
166 206
167/* 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 */
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
168 244
169#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 248# else
173# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
174# endif 250# endif
175#endif 251#endif
176 252
177#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 255#endif
180 256
181#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 260# else
185# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
186# endif 262# endif
187#endif 263#endif
188 264
189#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 267#endif
192 268
193#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
194# ifdef _WIN32 270# ifdef _WIN32
195# define EV_USE_POLL 0 271# define EV_USE_POLL 0
196# else 272# else
197# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 274# endif
199#endif 275#endif
200 276
201#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 280# else
205# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
206# endif 282# endif
207#endif 283#endif
208 284
… …
214# define EV_USE_PORT 0 290# define EV_USE_PORT 0
215#endif 291#endif
216 292
217#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 296# else
221# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
222# endif 298# endif
223#endif 299#endif
224 300
225#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 303#endif
232 304
233#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 307#endif
240 308
241#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 312# else
245# 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
246# endif 322# endif
247#endif 323#endif
248 324
249#if 0 /* debugging */ 325#if 0 /* debugging */
250# define EV_VERIFY 3 326# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
253#endif 329#endif
254 330
255#ifndef EV_VERIFY 331#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 333#endif
258 334
259#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 337#endif
262 338
263#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
264# 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
265#endif 355#endif
266 356
267/* 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
268 364
269#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
272#endif 368#endif
… …
280# undef EV_USE_INOTIFY 376# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0 377# define EV_USE_INOTIFY 0
282#endif 378#endif
283 379
284#if !EV_USE_NANOSLEEP 380#if !EV_USE_NANOSLEEP
285# ifndef _WIN32 381/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux)
286# include <sys/select.h> 383# include <sys/select.h>
287# endif 384# endif
288#endif 385#endif
289 386
290#if EV_USE_INOTIFY 387#if EV_USE_INOTIFY
291# include <sys/utsname.h> 388# include <sys/statfs.h>
292# include <sys/inotify.h> 389# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW 391# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 392# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 393# define EV_USE_INOTIFY 0
… …
302#endif 399#endif
303 400
304#if EV_USE_EVENTFD 401#if EV_USE_EVENTFD
305/* 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 */
306# include <stdint.h> 403# include <stdint.h>
307# ifdef __cplusplus 404# ifndef EFD_NONBLOCK
308extern "C" { 405# define EFD_NONBLOCK O_NONBLOCK
309# endif 406# endif
310int eventfd (unsigned int initval, int flags); 407# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 408# ifdef O_CLOEXEC
312} 409# define EFD_CLOEXEC O_CLOEXEC
410# else
411# define EFD_CLOEXEC 02000000
412# endif
313# 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};
314#endif 437#endif
315 438
316/**/ 439/**/
317 440
318#if EV_VERIFY >= 3 441#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 442# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 443#else
321# define EV_FREQUENT_CHECK do { } while (0) 444# define EV_FREQUENT_CHECK do { } while (0)
322#endif 445#endif
323 446
324/* 447/*
… …
331 */ 454 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
333 456
334#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) */
335#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) */
336/*#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)
337 462
338#if __GNUC__ >= 4 463#if __GNUC__ >= 4
339# define expect(expr,value) __builtin_expect ((expr),(value)) 464# define expect(expr,value) __builtin_expect ((expr),(value))
340# define noinline __attribute__ ((noinline)) 465# define noinline __attribute__ ((noinline))
341#else 466#else
… …
348 473
349#define expect_false(expr) expect ((expr) != 0, 0) 474#define expect_false(expr) expect ((expr) != 0, 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 475#define expect_true(expr) expect ((expr) != 0, 1)
351#define inline_size static inline 476#define inline_size static inline
352 477
353#if EV_MINIMAL 478#if EV_FEATURE_CODE
479# define inline_speed static inline
480#else
354# 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)
355#else 488#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif
361 491
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 492#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 493#define EMPTY2(a,b) /* used to suppress some warnings */
364 494
365typedef ev_watcher *W; 495typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 497typedef ev_watcher_time *WT;
368 498
369#define ev_active(w) ((W)(w))->active 499#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 500#define ev_at(w) ((WT)(w))->at
371 501
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
372#if EV_USE_MONOTONIC 508#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static 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)
376#endif 520#endif
377 521
378#ifdef _WIN32 522#ifdef _WIN32
379# include "ev_win32.c" 523# include "ev_win32.c"
380#endif 524#endif
381 525
382/*****************************************************************************/ 526/*****************************************************************************/
527
528#ifdef __linux
529# include <sys/utsname.h>
530#endif
531
532static unsigned int noinline
533ev_linux_version (void)
534{
535#ifdef __linux
536 unsigned int v = 0;
537 struct utsname buf;
538 int i;
539 char *p = buf.release;
540
541 if (uname (&buf))
542 return 0;
543
544 for (i = 3+1; --i; )
545 {
546 unsigned int c = 0;
547
548 for (;;)
549 {
550 if (*p >= '0' && *p <= '9')
551 c = c * 10 + *p++ - '0';
552 else
553 {
554 p += *p == '.';
555 break;
556 }
557 }
558
559 v = (v << 8) | c;
560 }
561
562 return v;
563#else
564 return 0;
565#endif
566}
567
568/*****************************************************************************/
569
570#if EV_AVOID_STDIO
571static void noinline
572ev_printerr (const char *msg)
573{
574 write (STDERR_FILENO, msg, strlen (msg));
575}
576#endif
383 577
384static void (*syserr_cb)(const char *msg); 578static void (*syserr_cb)(const char *msg);
385 579
386void 580void
387ev_set_syserr_cb (void (*cb)(const char *msg)) 581ev_set_syserr_cb (void (*cb)(const char *msg))
… …
397 591
398 if (syserr_cb) 592 if (syserr_cb)
399 syserr_cb (msg); 593 syserr_cb (msg);
400 else 594 else
401 { 595 {
596#if EV_AVOID_STDIO
597 ev_printerr (msg);
598 ev_printerr (": ");
599 ev_printerr (strerror (errno));
600 ev_printerr ("\n");
601#else
402 perror (msg); 602 perror (msg);
603#endif
403 abort (); 604 abort ();
404 } 605 }
405} 606}
406 607
407static void * 608static void *
408ev_realloc_emul (void *ptr, long size) 609ev_realloc_emul (void *ptr, long size)
409{ 610{
611#if __GLIBC__
612 return realloc (ptr, size);
613#else
410 /* some systems, notably openbsd and darwin, fail to properly 614 /* some systems, notably openbsd and darwin, fail to properly
411 * implement realloc (x, 0) (as required by both ansi c-98 and 615 * implement realloc (x, 0) (as required by both ansi c-89 and
412 * the single unix specification, so work around them here. 616 * the single unix specification, so work around them here.
413 */ 617 */
414 618
415 if (size) 619 if (size)
416 return realloc (ptr, size); 620 return realloc (ptr, size);
417 621
418 free (ptr); 622 free (ptr);
419 return 0; 623 return 0;
624#endif
420} 625}
421 626
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
423 628
424void 629void
… …
432{ 637{
433 ptr = alloc (ptr, size); 638 ptr = alloc (ptr, size);
434 639
435 if (!ptr && size) 640 if (!ptr && size)
436 { 641 {
642#if EV_AVOID_STDIO
643 ev_printerr ("(libev) memory allocation failed, aborting.\n");
644#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 645 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
646#endif
438 abort (); 647 abort ();
439 } 648 }
440 649
441 return ptr; 650 return ptr;
442} 651}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 653#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 654#define ev_free(ptr) ev_realloc ((ptr), 0)
446 655
447/*****************************************************************************/ 656/*****************************************************************************/
448 657
658/* set in reify when reification needed */
659#define EV_ANFD_REIFY 1
660
661/* file descriptor info structure */
449typedef struct 662typedef struct
450{ 663{
451 WL head; 664 WL head;
452 unsigned char events; 665 unsigned char events; /* the events watched for */
453 unsigned char reify; 666 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 667 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
455 unsigned char unused; 668 unsigned char unused;
456#if EV_USE_EPOLL 669#if EV_USE_EPOLL
457 unsigned int egen; /* generation counter to counter epoll bugs */ 670 unsigned int egen; /* generation counter to counter epoll bugs */
458#endif 671#endif
459#if EV_SELECT_IS_WINSOCKET 672#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
460 SOCKET handle; 673 SOCKET handle;
461#endif 674#endif
675#if EV_USE_IOCP
676 OVERLAPPED or, ow;
677#endif
462} ANFD; 678} ANFD;
463 679
680/* stores the pending event set for a given watcher */
464typedef struct 681typedef struct
465{ 682{
466 W w; 683 W w;
467 int events; 684 int events; /* the pending event set for the given watcher */
468} ANPENDING; 685} ANPENDING;
469 686
470#if EV_USE_INOTIFY 687#if EV_USE_INOTIFY
471/* hash table entry per inotify-id */ 688/* hash table entry per inotify-id */
472typedef struct 689typedef struct
… …
475} ANFS; 692} ANFS;
476#endif 693#endif
477 694
478/* Heap Entry */ 695/* Heap Entry */
479#if EV_HEAP_CACHE_AT 696#if EV_HEAP_CACHE_AT
697 /* a heap element */
480 typedef struct { 698 typedef struct {
481 ev_tstamp at; 699 ev_tstamp at;
482 WT w; 700 WT w;
483 } ANHE; 701 } ANHE;
484 702
485 #define ANHE_w(he) (he).w /* access watcher, read-write */ 703 #define ANHE_w(he) (he).w /* access watcher, read-write */
486 #define ANHE_at(he) (he).at /* access cached at, read-only */ 704 #define ANHE_at(he) (he).at /* access cached at, read-only */
487 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 705 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
488#else 706#else
707 /* a heap element */
489 typedef WT ANHE; 708 typedef WT ANHE;
490 709
491 #define ANHE_w(he) (he) 710 #define ANHE_w(he) (he)
492 #define ANHE_at(he) (he)->at 711 #define ANHE_at(he) (he)->at
493 #define ANHE_at_cache(he) 712 #define ANHE_at_cache(he)
… …
517 736
518 static int ev_default_loop_ptr; 737 static int ev_default_loop_ptr;
519 738
520#endif 739#endif
521 740
741#if EV_FEATURE_API
742# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
743# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
744# define EV_INVOKE_PENDING invoke_cb (EV_A)
745#else
746# define EV_RELEASE_CB (void)0
747# define EV_ACQUIRE_CB (void)0
748# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
749#endif
750
751#define EVBREAK_RECURSE 0x80
752
522/*****************************************************************************/ 753/*****************************************************************************/
523 754
755#ifndef EV_HAVE_EV_TIME
524ev_tstamp 756ev_tstamp
525ev_time (void) 757ev_time (void)
526{ 758{
527#if EV_USE_REALTIME 759#if EV_USE_REALTIME
760 if (expect_true (have_realtime))
761 {
528 struct timespec ts; 762 struct timespec ts;
529 clock_gettime (CLOCK_REALTIME, &ts); 763 clock_gettime (CLOCK_REALTIME, &ts);
530 return ts.tv_sec + ts.tv_nsec * 1e-9; 764 return ts.tv_sec + ts.tv_nsec * 1e-9;
531#else 765 }
766#endif
767
532 struct timeval tv; 768 struct timeval tv;
533 gettimeofday (&tv, 0); 769 gettimeofday (&tv, 0);
534 return tv.tv_sec + tv.tv_usec * 1e-6; 770 return tv.tv_sec + tv.tv_usec * 1e-6;
535#endif
536} 771}
772#endif
537 773
538ev_tstamp inline_size 774inline_size ev_tstamp
539get_clock (void) 775get_clock (void)
540{ 776{
541#if EV_USE_MONOTONIC 777#if EV_USE_MONOTONIC
542 if (expect_true (have_monotonic)) 778 if (expect_true (have_monotonic))
543 { 779 {
… …
564 if (delay > 0.) 800 if (delay > 0.)
565 { 801 {
566#if EV_USE_NANOSLEEP 802#if EV_USE_NANOSLEEP
567 struct timespec ts; 803 struct timespec ts;
568 804
569 ts.tv_sec = (time_t)delay; 805 EV_TS_SET (ts, delay);
570 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
571
572 nanosleep (&ts, 0); 806 nanosleep (&ts, 0);
573#elif defined(_WIN32) 807#elif defined(_WIN32)
574 Sleep ((unsigned long)(delay * 1e3)); 808 Sleep ((unsigned long)(delay * 1e3));
575#else 809#else
576 struct timeval tv; 810 struct timeval tv;
577 811
578 tv.tv_sec = (time_t)delay;
579 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
580
581 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
582 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 813 /* something not guaranteed by newer posix versions, but guaranteed */
583 /* by older ones */ 814 /* by older ones */
815 EV_TV_SET (tv, delay);
584 select (0, 0, 0, 0, &tv); 816 select (0, 0, 0, 0, &tv);
585#endif 817#endif
586 } 818 }
587} 819}
588 820
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
589/*****************************************************************************/ 829/*****************************************************************************/
590 830
591#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
592 832
593int inline_size 833/* find a suitable new size for the given array, */
834/* hopefully by rounding to a nice-to-malloc size */
835inline_size int
594array_nextsize (int elem, int cur, int cnt) 836array_nextsize (int elem, int cur, int cnt)
595{ 837{
596 int ncur = cur + 1; 838 int ncur = cur + 1;
597 839
598 do 840 do
… …
639 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 881 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
640 } 882 }
641#endif 883#endif
642 884
643#define array_free(stem, idx) \ 885#define array_free(stem, idx) \
644 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 886 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
645 887
646/*****************************************************************************/ 888/*****************************************************************************/
889
890/* dummy callback for pending events */
891static void noinline
892pendingcb (EV_P_ ev_prepare *w, int revents)
893{
894}
647 895
648void noinline 896void noinline
649ev_feed_event (EV_P_ void *w, int revents) 897ev_feed_event (EV_P_ void *w, int revents)
650{ 898{
651 W w_ = (W)w; 899 W w_ = (W)w;
… …
660 pendings [pri][w_->pending - 1].w = w_; 908 pendings [pri][w_->pending - 1].w = w_;
661 pendings [pri][w_->pending - 1].events = revents; 909 pendings [pri][w_->pending - 1].events = revents;
662 } 910 }
663} 911}
664 912
665void inline_speed 913inline_speed void
914feed_reverse (EV_P_ W w)
915{
916 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
917 rfeeds [rfeedcnt++] = w;
918}
919
920inline_size void
921feed_reverse_done (EV_P_ int revents)
922{
923 do
924 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
925 while (rfeedcnt);
926}
927
928inline_speed void
666queue_events (EV_P_ W *events, int eventcnt, int type) 929queue_events (EV_P_ W *events, int eventcnt, int type)
667{ 930{
668 int i; 931 int i;
669 932
670 for (i = 0; i < eventcnt; ++i) 933 for (i = 0; i < eventcnt; ++i)
671 ev_feed_event (EV_A_ events [i], type); 934 ev_feed_event (EV_A_ events [i], type);
672} 935}
673 936
674/*****************************************************************************/ 937/*****************************************************************************/
675 938
676void inline_speed 939inline_speed void
677fd_event (EV_P_ int fd, int revents) 940fd_event_nocheck (EV_P_ int fd, int revents)
678{ 941{
679 ANFD *anfd = anfds + fd; 942 ANFD *anfd = anfds + fd;
680 ev_io *w; 943 ev_io *w;
681 944
682 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 945 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
686 if (ev) 949 if (ev)
687 ev_feed_event (EV_A_ (W)w, ev); 950 ev_feed_event (EV_A_ (W)w, ev);
688 } 951 }
689} 952}
690 953
954/* do not submit kernel events for fds that have reify set */
955/* because that means they changed while we were polling for new events */
956inline_speed void
957fd_event (EV_P_ int fd, int revents)
958{
959 ANFD *anfd = anfds + fd;
960
961 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents);
963}
964
691void 965void
692ev_feed_fd_event (EV_P_ int fd, int revents) 966ev_feed_fd_event (EV_P_ int fd, int revents)
693{ 967{
694 if (fd >= 0 && fd < anfdmax) 968 if (fd >= 0 && fd < anfdmax)
695 fd_event (EV_A_ fd, revents); 969 fd_event_nocheck (EV_A_ fd, revents);
696} 970}
697 971
698void inline_size 972/* make sure the external fd watch events are in-sync */
973/* with the kernel/libev internal state */
974inline_size void
699fd_reify (EV_P) 975fd_reify (EV_P)
700{ 976{
701 int i; 977 int i;
978
979#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
980 for (i = 0; i < fdchangecnt; ++i)
981 {
982 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd;
984
985 if (anfd->reify & EV__IOFDSET)
986 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988
989 if (handle != anfd->handle)
990 {
991 unsigned long arg;
992
993 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
994
995 /* handle changed, but fd didn't - we need to do it in two steps */
996 backend_modify (EV_A_ fd, anfd->events, 0);
997 anfd->events = 0;
998 anfd->handle = handle;
999 }
1000 }
1001 }
1002#endif
702 1003
703 for (i = 0; i < fdchangecnt; ++i) 1004 for (i = 0; i < fdchangecnt; ++i)
704 { 1005 {
705 int fd = fdchanges [i]; 1006 int fd = fdchanges [i];
706 ANFD *anfd = anfds + fd; 1007 ANFD *anfd = anfds + fd;
707 ev_io *w; 1008 ev_io *w;
708 1009
709 unsigned char events = 0; 1010 unsigned char o_events = anfd->events;
1011 unsigned char o_reify = anfd->reify;
710 1012
711 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1013 anfd->reify = 0;
712 events |= (unsigned char)w->events;
713 1014
714#if EV_SELECT_IS_WINSOCKET 1015 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
715 if (events)
716 { 1016 {
717 unsigned long arg; 1017 anfd->events = 0;
718 #ifdef EV_FD_TO_WIN32_HANDLE 1018
719 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1019 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
720 #else 1020 anfd->events |= (unsigned char)w->events;
721 anfd->handle = _get_osfhandle (fd); 1021
722 #endif 1022 if (o_events != anfd->events)
723 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1023 o_reify = EV__IOFDSET; /* actually |= */
724 } 1024 }
725#endif
726 1025
727 { 1026 if (o_reify & EV__IOFDSET)
728 unsigned char o_events = anfd->events;
729 unsigned char o_reify = anfd->reify;
730
731 anfd->reify = 0;
732 anfd->events = events;
733
734 if (o_events != events || o_reify & EV_IOFDSET)
735 backend_modify (EV_A_ fd, o_events, events); 1027 backend_modify (EV_A_ fd, o_events, anfd->events);
736 }
737 } 1028 }
738 1029
739 fdchangecnt = 0; 1030 fdchangecnt = 0;
740} 1031}
741 1032
742void inline_size 1033/* something about the given fd changed */
1034inline_size void
743fd_change (EV_P_ int fd, int flags) 1035fd_change (EV_P_ int fd, int flags)
744{ 1036{
745 unsigned char reify = anfds [fd].reify; 1037 unsigned char reify = anfds [fd].reify;
746 anfds [fd].reify |= flags; 1038 anfds [fd].reify |= flags;
747 1039
… …
751 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1043 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
752 fdchanges [fdchangecnt - 1] = fd; 1044 fdchanges [fdchangecnt - 1] = fd;
753 } 1045 }
754} 1046}
755 1047
756void inline_speed 1048/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1049inline_speed void
757fd_kill (EV_P_ int fd) 1050fd_kill (EV_P_ int fd)
758{ 1051{
759 ev_io *w; 1052 ev_io *w;
760 1053
761 while ((w = (ev_io *)anfds [fd].head)) 1054 while ((w = (ev_io *)anfds [fd].head))
… …
763 ev_io_stop (EV_A_ w); 1056 ev_io_stop (EV_A_ w);
764 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1057 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
765 } 1058 }
766} 1059}
767 1060
768int inline_size 1061/* check whether the given fd is actually valid, for error recovery */
1062inline_size int
769fd_valid (int fd) 1063fd_valid (int fd)
770{ 1064{
771#ifdef _WIN32 1065#ifdef _WIN32
772 return _get_osfhandle (fd) != -1; 1066 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
773#else 1067#else
774 return fcntl (fd, F_GETFD) != -1; 1068 return fcntl (fd, F_GETFD) != -1;
775#endif 1069#endif
776} 1070}
777 1071
… …
795 1089
796 for (fd = anfdmax; fd--; ) 1090 for (fd = anfdmax; fd--; )
797 if (anfds [fd].events) 1091 if (anfds [fd].events)
798 { 1092 {
799 fd_kill (EV_A_ fd); 1093 fd_kill (EV_A_ fd);
800 return; 1094 break;
801 } 1095 }
802} 1096}
803 1097
804/* usually called after fork if backend needs to re-arm all fds from scratch */ 1098/* usually called after fork if backend needs to re-arm all fds from scratch */
805static void noinline 1099static void noinline
… …
810 for (fd = 0; fd < anfdmax; ++fd) 1104 for (fd = 0; fd < anfdmax; ++fd)
811 if (anfds [fd].events) 1105 if (anfds [fd].events)
812 { 1106 {
813 anfds [fd].events = 0; 1107 anfds [fd].events = 0;
814 anfds [fd].emask = 0; 1108 anfds [fd].emask = 0;
815 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1109 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
816 } 1110 }
817} 1111}
818 1112
1113/* used to prepare libev internal fd's */
1114/* this is not fork-safe */
1115inline_speed void
1116fd_intern (int fd)
1117{
1118#ifdef _WIN32
1119 unsigned long arg = 1;
1120 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1121#else
1122 fcntl (fd, F_SETFD, FD_CLOEXEC);
1123 fcntl (fd, F_SETFL, O_NONBLOCK);
1124#endif
1125}
1126
819/*****************************************************************************/ 1127/*****************************************************************************/
820 1128
821/* 1129/*
822 * the heap functions want a real array index. array index 0 uis guaranteed to not 1130 * the heap functions want a real array index. array index 0 is guaranteed to not
823 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1131 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
824 * the branching factor of the d-tree. 1132 * the branching factor of the d-tree.
825 */ 1133 */
826 1134
827/* 1135/*
… …
836#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1144#define HEAP0 (DHEAP - 1) /* index of first element in heap */
837#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1145#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
838#define UPHEAP_DONE(p,k) ((p) == (k)) 1146#define UPHEAP_DONE(p,k) ((p) == (k))
839 1147
840/* away from the root */ 1148/* away from the root */
841void inline_speed 1149inline_speed void
842downheap (ANHE *heap, int N, int k) 1150downheap (ANHE *heap, int N, int k)
843{ 1151{
844 ANHE he = heap [k]; 1152 ANHE he = heap [k];
845 ANHE *E = heap + N + HEAP0; 1153 ANHE *E = heap + N + HEAP0;
846 1154
… …
886#define HEAP0 1 1194#define HEAP0 1
887#define HPARENT(k) ((k) >> 1) 1195#define HPARENT(k) ((k) >> 1)
888#define UPHEAP_DONE(p,k) (!(p)) 1196#define UPHEAP_DONE(p,k) (!(p))
889 1197
890/* away from the root */ 1198/* away from the root */
891void inline_speed 1199inline_speed void
892downheap (ANHE *heap, int N, int k) 1200downheap (ANHE *heap, int N, int k)
893{ 1201{
894 ANHE he = heap [k]; 1202 ANHE he = heap [k];
895 1203
896 for (;;) 1204 for (;;)
897 { 1205 {
898 int c = k << 1; 1206 int c = k << 1;
899 1207
900 if (c > N + HEAP0 - 1) 1208 if (c >= N + HEAP0)
901 break; 1209 break;
902 1210
903 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1211 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
904 ? 1 : 0; 1212 ? 1 : 0;
905 1213
… …
916 ev_active (ANHE_w (he)) = k; 1224 ev_active (ANHE_w (he)) = k;
917} 1225}
918#endif 1226#endif
919 1227
920/* towards the root */ 1228/* towards the root */
921void inline_speed 1229inline_speed void
922upheap (ANHE *heap, int k) 1230upheap (ANHE *heap, int k)
923{ 1231{
924 ANHE he = heap [k]; 1232 ANHE he = heap [k];
925 1233
926 for (;;) 1234 for (;;)
… …
937 1245
938 heap [k] = he; 1246 heap [k] = he;
939 ev_active (ANHE_w (he)) = k; 1247 ev_active (ANHE_w (he)) = k;
940} 1248}
941 1249
942void inline_size 1250/* move an element suitably so it is in a correct place */
1251inline_size void
943adjustheap (ANHE *heap, int N, int k) 1252adjustheap (ANHE *heap, int N, int k)
944{ 1253{
945 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1254 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
946 upheap (heap, k); 1255 upheap (heap, k);
947 else 1256 else
948 downheap (heap, N, k); 1257 downheap (heap, N, k);
949} 1258}
950 1259
951/* rebuild the heap: this function is used only once and executed rarely */ 1260/* rebuild the heap: this function is used only once and executed rarely */
952void inline_size 1261inline_size void
953reheap (ANHE *heap, int N) 1262reheap (ANHE *heap, int N)
954{ 1263{
955 int i; 1264 int i;
956 1265
957 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1266 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
960 upheap (heap, i + HEAP0); 1269 upheap (heap, i + HEAP0);
961} 1270}
962 1271
963/*****************************************************************************/ 1272/*****************************************************************************/
964 1273
1274/* associate signal watchers to a signal signal */
965typedef struct 1275typedef struct
966{ 1276{
1277 EV_ATOMIC_T pending;
1278#if EV_MULTIPLICITY
1279 EV_P;
1280#endif
967 WL head; 1281 WL head;
968 EV_ATOMIC_T gotsig;
969} ANSIG; 1282} ANSIG;
970 1283
971static ANSIG *signals; 1284static ANSIG signals [EV_NSIG - 1];
972static int signalmax;
973
974static EV_ATOMIC_T gotsig;
975 1285
976/*****************************************************************************/ 1286/*****************************************************************************/
977 1287
978void inline_speed 1288#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
979fd_intern (int fd)
980{
981#ifdef _WIN32
982 unsigned long arg = 1;
983 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
984#else
985 fcntl (fd, F_SETFD, FD_CLOEXEC);
986 fcntl (fd, F_SETFL, O_NONBLOCK);
987#endif
988}
989 1289
990static void noinline 1290static void noinline
991evpipe_init (EV_P) 1291evpipe_init (EV_P)
992{ 1292{
993 if (!ev_is_active (&pipeev)) 1293 if (!ev_is_active (&pipe_w))
994 { 1294 {
995#if EV_USE_EVENTFD 1295# if EV_USE_EVENTFD
1296 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1297 if (evfd < 0 && errno == EINVAL)
996 if ((evfd = eventfd (0, 0)) >= 0) 1298 evfd = eventfd (0, 0);
1299
1300 if (evfd >= 0)
997 { 1301 {
998 evpipe [0] = -1; 1302 evpipe [0] = -1;
999 fd_intern (evfd); 1303 fd_intern (evfd); /* doing it twice doesn't hurt */
1000 ev_io_set (&pipeev, evfd, EV_READ); 1304 ev_io_set (&pipe_w, evfd, EV_READ);
1001 } 1305 }
1002 else 1306 else
1003#endif 1307# endif
1004 { 1308 {
1005 while (pipe (evpipe)) 1309 while (pipe (evpipe))
1006 ev_syserr ("(libev) error creating signal/async pipe"); 1310 ev_syserr ("(libev) error creating signal/async pipe");
1007 1311
1008 fd_intern (evpipe [0]); 1312 fd_intern (evpipe [0]);
1009 fd_intern (evpipe [1]); 1313 fd_intern (evpipe [1]);
1010 ev_io_set (&pipeev, evpipe [0], EV_READ); 1314 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1011 } 1315 }
1012 1316
1013 ev_io_start (EV_A_ &pipeev); 1317 ev_io_start (EV_A_ &pipe_w);
1014 ev_unref (EV_A); /* watcher should not keep loop alive */ 1318 ev_unref (EV_A); /* watcher should not keep loop alive */
1015 } 1319 }
1016} 1320}
1017 1321
1018void inline_size 1322inline_size void
1019evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1323evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1020{ 1324{
1021 if (!*flag) 1325 if (!*flag)
1022 { 1326 {
1023 int old_errno = errno; /* save errno because write might clobber it */ 1327 int old_errno = errno; /* save errno because write might clobber it */
1328 char dummy;
1024 1329
1025 *flag = 1; 1330 *flag = 1;
1026 1331
1027#if EV_USE_EVENTFD 1332#if EV_USE_EVENTFD
1028 if (evfd >= 0) 1333 if (evfd >= 0)
… …
1030 uint64_t counter = 1; 1335 uint64_t counter = 1;
1031 write (evfd, &counter, sizeof (uint64_t)); 1336 write (evfd, &counter, sizeof (uint64_t));
1032 } 1337 }
1033 else 1338 else
1034#endif 1339#endif
1340 /* win32 people keep sending patches that change this write() to send() */
1341 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1342 /* so when you think this write should be a send instead, please find out */
1343 /* where your send() is from - it's definitely not the microsoft send, and */
1344 /* tell me. thank you. */
1035 write (evpipe [1], &old_errno, 1); 1345 write (evpipe [1], &dummy, 1);
1036 1346
1037 errno = old_errno; 1347 errno = old_errno;
1038 } 1348 }
1039} 1349}
1040 1350
1351/* called whenever the libev signal pipe */
1352/* got some events (signal, async) */
1041static void 1353static void
1042pipecb (EV_P_ ev_io *iow, int revents) 1354pipecb (EV_P_ ev_io *iow, int revents)
1043{ 1355{
1356 int i;
1357
1044#if EV_USE_EVENTFD 1358#if EV_USE_EVENTFD
1045 if (evfd >= 0) 1359 if (evfd >= 0)
1046 { 1360 {
1047 uint64_t counter; 1361 uint64_t counter;
1048 read (evfd, &counter, sizeof (uint64_t)); 1362 read (evfd, &counter, sizeof (uint64_t));
1049 } 1363 }
1050 else 1364 else
1051#endif 1365#endif
1052 { 1366 {
1053 char dummy; 1367 char dummy;
1368 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1054 read (evpipe [0], &dummy, 1); 1369 read (evpipe [0], &dummy, 1);
1055 } 1370 }
1056 1371
1057 if (gotsig && ev_is_default_loop (EV_A)) 1372#if EV_SIGNAL_ENABLE
1373 if (sig_pending)
1058 { 1374 {
1059 int signum; 1375 sig_pending = 0;
1060 gotsig = 0;
1061 1376
1062 for (signum = signalmax; signum--; ) 1377 for (i = EV_NSIG - 1; i--; )
1063 if (signals [signum].gotsig) 1378 if (expect_false (signals [i].pending))
1064 ev_feed_signal_event (EV_A_ signum + 1); 1379 ev_feed_signal_event (EV_A_ i + 1);
1065 } 1380 }
1381#endif
1066 1382
1067#if EV_ASYNC_ENABLE 1383#if EV_ASYNC_ENABLE
1068 if (gotasync) 1384 if (async_pending)
1069 { 1385 {
1070 int i; 1386 async_pending = 0;
1071 gotasync = 0;
1072 1387
1073 for (i = asynccnt; i--; ) 1388 for (i = asynccnt; i--; )
1074 if (asyncs [i]->sent) 1389 if (asyncs [i]->sent)
1075 { 1390 {
1076 asyncs [i]->sent = 0; 1391 asyncs [i]->sent = 0;
… …
1080#endif 1395#endif
1081} 1396}
1082 1397
1083/*****************************************************************************/ 1398/*****************************************************************************/
1084 1399
1400void
1401ev_feed_signal (int signum)
1402{
1403#if EV_MULTIPLICITY
1404 EV_P = signals [signum - 1].loop;
1405
1406 if (!EV_A)
1407 return;
1408#endif
1409
1410 signals [signum - 1].pending = 1;
1411 evpipe_write (EV_A_ &sig_pending);
1412}
1413
1085static void 1414static void
1086ev_sighandler (int signum) 1415ev_sighandler (int signum)
1087{ 1416{
1088#if EV_MULTIPLICITY
1089 struct ev_loop *loop = &default_loop_struct;
1090#endif
1091
1092#if _WIN32 1417#ifdef _WIN32
1093 signal (signum, ev_sighandler); 1418 signal (signum, ev_sighandler);
1094#endif 1419#endif
1095 1420
1096 signals [signum - 1].gotsig = 1; 1421 ev_feed_signal (signum);
1097 evpipe_write (EV_A_ &gotsig);
1098} 1422}
1099 1423
1100void noinline 1424void noinline
1101ev_feed_signal_event (EV_P_ int signum) 1425ev_feed_signal_event (EV_P_ int signum)
1102{ 1426{
1103 WL w; 1427 WL w;
1104 1428
1429 if (expect_false (signum <= 0 || signum > EV_NSIG))
1430 return;
1431
1432 --signum;
1433
1105#if EV_MULTIPLICITY 1434#if EV_MULTIPLICITY
1106 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1435 /* it is permissible to try to feed a signal to the wrong loop */
1107#endif 1436 /* or, likely more useful, feeding a signal nobody is waiting for */
1108 1437
1109 --signum; 1438 if (expect_false (signals [signum].loop != EV_A))
1110
1111 if (signum < 0 || signum >= signalmax)
1112 return; 1439 return;
1440#endif
1113 1441
1114 signals [signum].gotsig = 0; 1442 signals [signum].pending = 0;
1115 1443
1116 for (w = signals [signum].head; w; w = w->next) 1444 for (w = signals [signum].head; w; w = w->next)
1117 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1445 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1118} 1446}
1119 1447
1448#if EV_USE_SIGNALFD
1449static void
1450sigfdcb (EV_P_ ev_io *iow, int revents)
1451{
1452 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1453
1454 for (;;)
1455 {
1456 ssize_t res = read (sigfd, si, sizeof (si));
1457
1458 /* not ISO-C, as res might be -1, but works with SuS */
1459 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1460 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1461
1462 if (res < (ssize_t)sizeof (si))
1463 break;
1464 }
1465}
1466#endif
1467
1468#endif
1469
1120/*****************************************************************************/ 1470/*****************************************************************************/
1121 1471
1472#if EV_CHILD_ENABLE
1122static WL childs [EV_PID_HASHSIZE]; 1473static WL childs [EV_PID_HASHSIZE];
1123
1124#ifndef _WIN32
1125 1474
1126static ev_signal childev; 1475static ev_signal childev;
1127 1476
1128#ifndef WIFCONTINUED 1477#ifndef WIFCONTINUED
1129# define WIFCONTINUED(status) 0 1478# define WIFCONTINUED(status) 0
1130#endif 1479#endif
1131 1480
1132void inline_speed 1481/* handle a single child status event */
1482inline_speed void
1133child_reap (EV_P_ int chain, int pid, int status) 1483child_reap (EV_P_ int chain, int pid, int status)
1134{ 1484{
1135 ev_child *w; 1485 ev_child *w;
1136 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1486 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1137 1487
1138 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1488 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1139 { 1489 {
1140 if ((w->pid == pid || !w->pid) 1490 if ((w->pid == pid || !w->pid)
1141 && (!traced || (w->flags & 1))) 1491 && (!traced || (w->flags & 1)))
1142 { 1492 {
1143 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1493 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1150 1500
1151#ifndef WCONTINUED 1501#ifndef WCONTINUED
1152# define WCONTINUED 0 1502# define WCONTINUED 0
1153#endif 1503#endif
1154 1504
1505/* called on sigchld etc., calls waitpid */
1155static void 1506static void
1156childcb (EV_P_ ev_signal *sw, int revents) 1507childcb (EV_P_ ev_signal *sw, int revents)
1157{ 1508{
1158 int pid, status; 1509 int pid, status;
1159 1510
… …
1167 /* make sure we are called again until all children have been reaped */ 1518 /* make sure we are called again until all children have been reaped */
1168 /* we need to do it this way so that the callback gets called before we continue */ 1519 /* we need to do it this way so that the callback gets called before we continue */
1169 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1520 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1170 1521
1171 child_reap (EV_A_ pid, pid, status); 1522 child_reap (EV_A_ pid, pid, status);
1172 if (EV_PID_HASHSIZE > 1) 1523 if ((EV_PID_HASHSIZE) > 1)
1173 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1524 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1174} 1525}
1175 1526
1176#endif 1527#endif
1177 1528
1178/*****************************************************************************/ 1529/*****************************************************************************/
1179 1530
1531#if EV_USE_IOCP
1532# include "ev_iocp.c"
1533#endif
1180#if EV_USE_PORT 1534#if EV_USE_PORT
1181# include "ev_port.c" 1535# include "ev_port.c"
1182#endif 1536#endif
1183#if EV_USE_KQUEUE 1537#if EV_USE_KQUEUE
1184# include "ev_kqueue.c" 1538# include "ev_kqueue.c"
… …
1240 /* kqueue is borked on everything but netbsd apparently */ 1594 /* kqueue is borked on everything but netbsd apparently */
1241 /* it usually doesn't work correctly on anything but sockets and pipes */ 1595 /* it usually doesn't work correctly on anything but sockets and pipes */
1242 flags &= ~EVBACKEND_KQUEUE; 1596 flags &= ~EVBACKEND_KQUEUE;
1243#endif 1597#endif
1244#ifdef __APPLE__ 1598#ifdef __APPLE__
1245 // flags &= ~EVBACKEND_KQUEUE; for documentation 1599 /* only select works correctly on that "unix-certified" platform */
1246 flags &= ~EVBACKEND_POLL; 1600 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1601 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1602#endif
1603#ifdef __FreeBSD__
1604 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1247#endif 1605#endif
1248 1606
1249 return flags; 1607 return flags;
1250} 1608}
1251 1609
… …
1253ev_embeddable_backends (void) 1611ev_embeddable_backends (void)
1254{ 1612{
1255 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1256 1614
1257 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1615 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1258 /* please fix it and tell me how to detect the fix */ 1616 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1259 flags &= ~EVBACKEND_EPOLL; 1617 flags &= ~EVBACKEND_EPOLL;
1260 1618
1261 return flags; 1619 return flags;
1262} 1620}
1263 1621
1264unsigned int 1622unsigned int
1265ev_backend (EV_P) 1623ev_backend (EV_P)
1266{ 1624{
1267 return backend; 1625 return backend;
1268} 1626}
1269 1627
1628#if EV_FEATURE_API
1270unsigned int 1629unsigned int
1271ev_loop_count (EV_P) 1630ev_iteration (EV_P)
1272{ 1631{
1273 return loop_count; 1632 return loop_count;
1274} 1633}
1275 1634
1635unsigned int
1636ev_depth (EV_P)
1637{
1638 return loop_depth;
1639}
1640
1276void 1641void
1277ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1642ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1278{ 1643{
1279 io_blocktime = interval; 1644 io_blocktime = interval;
1280} 1645}
… …
1283ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1648ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1284{ 1649{
1285 timeout_blocktime = interval; 1650 timeout_blocktime = interval;
1286} 1651}
1287 1652
1653void
1654ev_set_userdata (EV_P_ void *data)
1655{
1656 userdata = data;
1657}
1658
1659void *
1660ev_userdata (EV_P)
1661{
1662 return userdata;
1663}
1664
1665void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1666{
1667 invoke_cb = invoke_pending_cb;
1668}
1669
1670void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1671{
1672 release_cb = release;
1673 acquire_cb = acquire;
1674}
1675#endif
1676
1677/* initialise a loop structure, must be zero-initialised */
1288static void noinline 1678static void noinline
1289loop_init (EV_P_ unsigned int flags) 1679loop_init (EV_P_ unsigned int flags)
1290{ 1680{
1291 if (!backend) 1681 if (!backend)
1292 { 1682 {
1683 origflags = flags;
1684
1685#if EV_USE_REALTIME
1686 if (!have_realtime)
1687 {
1688 struct timespec ts;
1689
1690 if (!clock_gettime (CLOCK_REALTIME, &ts))
1691 have_realtime = 1;
1692 }
1693#endif
1694
1293#if EV_USE_MONOTONIC 1695#if EV_USE_MONOTONIC
1696 if (!have_monotonic)
1294 { 1697 {
1295 struct timespec ts; 1698 struct timespec ts;
1699
1296 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1700 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1297 have_monotonic = 1; 1701 have_monotonic = 1;
1298 } 1702 }
1299#endif 1703#endif
1704
1705 /* pid check not overridable via env */
1706#ifndef _WIN32
1707 if (flags & EVFLAG_FORKCHECK)
1708 curpid = getpid ();
1709#endif
1710
1711 if (!(flags & EVFLAG_NOENV)
1712 && !enable_secure ()
1713 && getenv ("LIBEV_FLAGS"))
1714 flags = atoi (getenv ("LIBEV_FLAGS"));
1300 1715
1301 ev_rt_now = ev_time (); 1716 ev_rt_now = ev_time ();
1302 mn_now = get_clock (); 1717 mn_now = get_clock ();
1303 now_floor = mn_now; 1718 now_floor = mn_now;
1304 rtmn_diff = ev_rt_now - mn_now; 1719 rtmn_diff = ev_rt_now - mn_now;
1720#if EV_FEATURE_API
1721 invoke_cb = ev_invoke_pending;
1722#endif
1305 1723
1306 io_blocktime = 0.; 1724 io_blocktime = 0.;
1307 timeout_blocktime = 0.; 1725 timeout_blocktime = 0.;
1308 backend = 0; 1726 backend = 0;
1309 backend_fd = -1; 1727 backend_fd = -1;
1310 gotasync = 0; 1728 sig_pending = 0;
1729#if EV_ASYNC_ENABLE
1730 async_pending = 0;
1731#endif
1311#if EV_USE_INOTIFY 1732#if EV_USE_INOTIFY
1312 fs_fd = -2; 1733 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1313#endif 1734#endif
1314 1735#if EV_USE_SIGNALFD
1315 /* pid check not overridable via env */ 1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1316#ifndef _WIN32
1317 if (flags & EVFLAG_FORKCHECK)
1318 curpid = getpid ();
1319#endif 1737#endif
1320 1738
1321 if (!(flags & EVFLAG_NOENV) 1739 if (!(flags & EVBACKEND_MASK))
1322 && !enable_secure ()
1323 && getenv ("LIBEV_FLAGS"))
1324 flags = atoi (getenv ("LIBEV_FLAGS"));
1325
1326 if (!(flags & 0x0000ffffU))
1327 flags |= ev_recommended_backends (); 1740 flags |= ev_recommended_backends ();
1328 1741
1742#if EV_USE_IOCP
1743 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1744#endif
1329#if EV_USE_PORT 1745#if EV_USE_PORT
1330 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1746 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1331#endif 1747#endif
1332#if EV_USE_KQUEUE 1748#if EV_USE_KQUEUE
1333 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1749 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1340#endif 1756#endif
1341#if EV_USE_SELECT 1757#if EV_USE_SELECT
1342 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1758 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1343#endif 1759#endif
1344 1760
1761 ev_prepare_init (&pending_w, pendingcb);
1762
1763#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1345 ev_init (&pipeev, pipecb); 1764 ev_init (&pipe_w, pipecb);
1346 ev_set_priority (&pipeev, EV_MAXPRI); 1765 ev_set_priority (&pipe_w, EV_MAXPRI);
1766#endif
1347 } 1767 }
1348} 1768}
1349 1769
1350static void noinline 1770/* free up a loop structure */
1771void
1351loop_destroy (EV_P) 1772ev_loop_destroy (EV_P)
1352{ 1773{
1353 int i; 1774 int i;
1354 1775
1776#if EV_MULTIPLICITY
1777 /* mimic free (0) */
1778 if (!EV_A)
1779 return;
1780#endif
1781
1782#if EV_CLEANUP_ENABLE
1783 /* queue cleanup watchers (and execute them) */
1784 if (expect_false (cleanupcnt))
1785 {
1786 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1787 EV_INVOKE_PENDING;
1788 }
1789#endif
1790
1791#if EV_CHILD_ENABLE
1792 if (ev_is_active (&childev))
1793 {
1794 ev_ref (EV_A); /* child watcher */
1795 ev_signal_stop (EV_A_ &childev);
1796 }
1797#endif
1798
1355 if (ev_is_active (&pipeev)) 1799 if (ev_is_active (&pipe_w))
1356 { 1800 {
1357 ev_ref (EV_A); /* signal watcher */ 1801 /*ev_ref (EV_A);*/
1358 ev_io_stop (EV_A_ &pipeev); 1802 /*ev_io_stop (EV_A_ &pipe_w);*/
1359 1803
1360#if EV_USE_EVENTFD 1804#if EV_USE_EVENTFD
1361 if (evfd >= 0) 1805 if (evfd >= 0)
1362 close (evfd); 1806 close (evfd);
1363#endif 1807#endif
1364 1808
1365 if (evpipe [0] >= 0) 1809 if (evpipe [0] >= 0)
1366 { 1810 {
1367 close (evpipe [0]); 1811 EV_WIN32_CLOSE_FD (evpipe [0]);
1368 close (evpipe [1]); 1812 EV_WIN32_CLOSE_FD (evpipe [1]);
1369 } 1813 }
1370 } 1814 }
1815
1816#if EV_USE_SIGNALFD
1817 if (ev_is_active (&sigfd_w))
1818 close (sigfd);
1819#endif
1371 1820
1372#if EV_USE_INOTIFY 1821#if EV_USE_INOTIFY
1373 if (fs_fd >= 0) 1822 if (fs_fd >= 0)
1374 close (fs_fd); 1823 close (fs_fd);
1375#endif 1824#endif
1376 1825
1377 if (backend_fd >= 0) 1826 if (backend_fd >= 0)
1378 close (backend_fd); 1827 close (backend_fd);
1379 1828
1829#if EV_USE_IOCP
1830 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1831#endif
1380#if EV_USE_PORT 1832#if EV_USE_PORT
1381 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1833 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1382#endif 1834#endif
1383#if EV_USE_KQUEUE 1835#if EV_USE_KQUEUE
1384 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1836 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1399#if EV_IDLE_ENABLE 1851#if EV_IDLE_ENABLE
1400 array_free (idle, [i]); 1852 array_free (idle, [i]);
1401#endif 1853#endif
1402 } 1854 }
1403 1855
1404 ev_free (anfds); anfdmax = 0; 1856 ev_free (anfds); anfds = 0; anfdmax = 0;
1405 1857
1406 /* have to use the microsoft-never-gets-it-right macro */ 1858 /* have to use the microsoft-never-gets-it-right macro */
1859 array_free (rfeed, EMPTY);
1407 array_free (fdchange, EMPTY); 1860 array_free (fdchange, EMPTY);
1408 array_free (timer, EMPTY); 1861 array_free (timer, EMPTY);
1409#if EV_PERIODIC_ENABLE 1862#if EV_PERIODIC_ENABLE
1410 array_free (periodic, EMPTY); 1863 array_free (periodic, EMPTY);
1411#endif 1864#endif
1412#if EV_FORK_ENABLE 1865#if EV_FORK_ENABLE
1413 array_free (fork, EMPTY); 1866 array_free (fork, EMPTY);
1414#endif 1867#endif
1868#if EV_CLEANUP_ENABLE
1869 array_free (cleanup, EMPTY);
1870#endif
1415 array_free (prepare, EMPTY); 1871 array_free (prepare, EMPTY);
1416 array_free (check, EMPTY); 1872 array_free (check, EMPTY);
1417#if EV_ASYNC_ENABLE 1873#if EV_ASYNC_ENABLE
1418 array_free (async, EMPTY); 1874 array_free (async, EMPTY);
1419#endif 1875#endif
1420 1876
1421 backend = 0; 1877 backend = 0;
1878
1879#if EV_MULTIPLICITY
1880 if (ev_is_default_loop (EV_A))
1881#endif
1882 ev_default_loop_ptr = 0;
1883#if EV_MULTIPLICITY
1884 else
1885 ev_free (EV_A);
1886#endif
1422} 1887}
1423 1888
1424#if EV_USE_INOTIFY 1889#if EV_USE_INOTIFY
1425void inline_size infy_fork (EV_P); 1890inline_size void infy_fork (EV_P);
1426#endif 1891#endif
1427 1892
1428void inline_size 1893inline_size void
1429loop_fork (EV_P) 1894loop_fork (EV_P)
1430{ 1895{
1431#if EV_USE_PORT 1896#if EV_USE_PORT
1432 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1897 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1433#endif 1898#endif
… …
1439#endif 1904#endif
1440#if EV_USE_INOTIFY 1905#if EV_USE_INOTIFY
1441 infy_fork (EV_A); 1906 infy_fork (EV_A);
1442#endif 1907#endif
1443 1908
1444 if (ev_is_active (&pipeev)) 1909 if (ev_is_active (&pipe_w))
1445 { 1910 {
1446 /* this "locks" the handlers against writing to the pipe */ 1911 /* this "locks" the handlers against writing to the pipe */
1447 /* while we modify the fd vars */ 1912 /* while we modify the fd vars */
1448 gotsig = 1; 1913 sig_pending = 1;
1449#if EV_ASYNC_ENABLE 1914#if EV_ASYNC_ENABLE
1450 gotasync = 1; 1915 async_pending = 1;
1451#endif 1916#endif
1452 1917
1453 ev_ref (EV_A); 1918 ev_ref (EV_A);
1454 ev_io_stop (EV_A_ &pipeev); 1919 ev_io_stop (EV_A_ &pipe_w);
1455 1920
1456#if EV_USE_EVENTFD 1921#if EV_USE_EVENTFD
1457 if (evfd >= 0) 1922 if (evfd >= 0)
1458 close (evfd); 1923 close (evfd);
1459#endif 1924#endif
1460 1925
1461 if (evpipe [0] >= 0) 1926 if (evpipe [0] >= 0)
1462 { 1927 {
1463 close (evpipe [0]); 1928 EV_WIN32_CLOSE_FD (evpipe [0]);
1464 close (evpipe [1]); 1929 EV_WIN32_CLOSE_FD (evpipe [1]);
1465 } 1930 }
1466 1931
1932#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1467 evpipe_init (EV_A); 1933 evpipe_init (EV_A);
1468 /* now iterate over everything, in case we missed something */ 1934 /* now iterate over everything, in case we missed something */
1469 pipecb (EV_A_ &pipeev, EV_READ); 1935 pipecb (EV_A_ &pipe_w, EV_READ);
1936#endif
1470 } 1937 }
1471 1938
1472 postfork = 0; 1939 postfork = 0;
1473} 1940}
1474 1941
1475#if EV_MULTIPLICITY 1942#if EV_MULTIPLICITY
1476 1943
1477struct ev_loop * 1944struct ev_loop *
1478ev_loop_new (unsigned int flags) 1945ev_loop_new (unsigned int flags)
1479{ 1946{
1480 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1947 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1481 1948
1482 memset (loop, 0, sizeof (struct ev_loop)); 1949 memset (EV_A, 0, sizeof (struct ev_loop));
1483
1484 loop_init (EV_A_ flags); 1950 loop_init (EV_A_ flags);
1485 1951
1486 if (ev_backend (EV_A)) 1952 if (ev_backend (EV_A))
1487 return loop; 1953 return EV_A;
1488 1954
1955 ev_free (EV_A);
1489 return 0; 1956 return 0;
1490} 1957}
1491 1958
1492void 1959#endif /* multiplicity */
1493ev_loop_destroy (EV_P)
1494{
1495 loop_destroy (EV_A);
1496 ev_free (loop);
1497}
1498
1499void
1500ev_loop_fork (EV_P)
1501{
1502 postfork = 1; /* must be in line with ev_default_fork */
1503}
1504 1960
1505#if EV_VERIFY 1961#if EV_VERIFY
1506static void noinline 1962static void noinline
1507verify_watcher (EV_P_ W w) 1963verify_watcher (EV_P_ W w)
1508{ 1964{
1509 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1965 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1510 1966
1511 if (w->pending) 1967 if (w->pending)
1512 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1968 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1513} 1969}
1514 1970
1515static void noinline 1971static void noinline
1516verify_heap (EV_P_ ANHE *heap, int N) 1972verify_heap (EV_P_ ANHE *heap, int N)
1517{ 1973{
1518 int i; 1974 int i;
1519 1975
1520 for (i = HEAP0; i < N + HEAP0; ++i) 1976 for (i = HEAP0; i < N + HEAP0; ++i)
1521 { 1977 {
1522 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1978 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1523 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1979 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1524 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1980 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1525 1981
1526 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1982 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1527 } 1983 }
1528} 1984}
1529 1985
1530static void noinline 1986static void noinline
1531array_verify (EV_P_ W *ws, int cnt) 1987array_verify (EV_P_ W *ws, int cnt)
1532{ 1988{
1533 while (cnt--) 1989 while (cnt--)
1534 { 1990 {
1535 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1991 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1536 verify_watcher (EV_A_ ws [cnt]); 1992 verify_watcher (EV_A_ ws [cnt]);
1537 } 1993 }
1538} 1994}
1539#endif 1995#endif
1540 1996
1997#if EV_FEATURE_API
1541void 1998void
1542ev_loop_verify (EV_P) 1999ev_verify (EV_P)
1543{ 2000{
1544#if EV_VERIFY 2001#if EV_VERIFY
1545 int i; 2002 int i;
1546 WL w; 2003 WL w;
1547 2004
1548 assert (activecnt >= -1); 2005 assert (activecnt >= -1);
1549 2006
1550 assert (fdchangemax >= fdchangecnt); 2007 assert (fdchangemax >= fdchangecnt);
1551 for (i = 0; i < fdchangecnt; ++i) 2008 for (i = 0; i < fdchangecnt; ++i)
1552 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2009 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1553 2010
1554 assert (anfdmax >= 0); 2011 assert (anfdmax >= 0);
1555 for (i = 0; i < anfdmax; ++i) 2012 for (i = 0; i < anfdmax; ++i)
1556 for (w = anfds [i].head; w; w = w->next) 2013 for (w = anfds [i].head; w; w = w->next)
1557 { 2014 {
1558 verify_watcher (EV_A_ (W)w); 2015 verify_watcher (EV_A_ (W)w);
1559 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2016 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1560 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2017 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1561 } 2018 }
1562 2019
1563 assert (timermax >= timercnt); 2020 assert (timermax >= timercnt);
1564 verify_heap (EV_A_ timers, timercnt); 2021 verify_heap (EV_A_ timers, timercnt);
1565 2022
… …
1581#if EV_FORK_ENABLE 2038#if EV_FORK_ENABLE
1582 assert (forkmax >= forkcnt); 2039 assert (forkmax >= forkcnt);
1583 array_verify (EV_A_ (W *)forks, forkcnt); 2040 array_verify (EV_A_ (W *)forks, forkcnt);
1584#endif 2041#endif
1585 2042
2043#if EV_CLEANUP_ENABLE
2044 assert (cleanupmax >= cleanupcnt);
2045 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2046#endif
2047
1586#if EV_ASYNC_ENABLE 2048#if EV_ASYNC_ENABLE
1587 assert (asyncmax >= asynccnt); 2049 assert (asyncmax >= asynccnt);
1588 array_verify (EV_A_ (W *)asyncs, asynccnt); 2050 array_verify (EV_A_ (W *)asyncs, asynccnt);
1589#endif 2051#endif
1590 2052
2053#if EV_PREPARE_ENABLE
1591 assert (preparemax >= preparecnt); 2054 assert (preparemax >= preparecnt);
1592 array_verify (EV_A_ (W *)prepares, preparecnt); 2055 array_verify (EV_A_ (W *)prepares, preparecnt);
2056#endif
1593 2057
2058#if EV_CHECK_ENABLE
1594 assert (checkmax >= checkcnt); 2059 assert (checkmax >= checkcnt);
1595 array_verify (EV_A_ (W *)checks, checkcnt); 2060 array_verify (EV_A_ (W *)checks, checkcnt);
2061#endif
1596 2062
1597# if 0 2063# if 0
2064#if EV_CHILD_ENABLE
1598 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2065 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1599 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2066 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2067#endif
1600# endif 2068# endif
1601#endif 2069#endif
1602} 2070}
1603 2071#endif
1604#endif /* multiplicity */
1605 2072
1606#if EV_MULTIPLICITY 2073#if EV_MULTIPLICITY
1607struct ev_loop * 2074struct ev_loop *
1608ev_default_loop_init (unsigned int flags)
1609#else 2075#else
1610int 2076int
2077#endif
1611ev_default_loop (unsigned int flags) 2078ev_default_loop (unsigned int flags)
1612#endif
1613{ 2079{
1614 if (!ev_default_loop_ptr) 2080 if (!ev_default_loop_ptr)
1615 { 2081 {
1616#if EV_MULTIPLICITY 2082#if EV_MULTIPLICITY
1617 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2083 EV_P = ev_default_loop_ptr = &default_loop_struct;
1618#else 2084#else
1619 ev_default_loop_ptr = 1; 2085 ev_default_loop_ptr = 1;
1620#endif 2086#endif
1621 2087
1622 loop_init (EV_A_ flags); 2088 loop_init (EV_A_ flags);
1623 2089
1624 if (ev_backend (EV_A)) 2090 if (ev_backend (EV_A))
1625 { 2091 {
1626#ifndef _WIN32 2092#if EV_CHILD_ENABLE
1627 ev_signal_init (&childev, childcb, SIGCHLD); 2093 ev_signal_init (&childev, childcb, SIGCHLD);
1628 ev_set_priority (&childev, EV_MAXPRI); 2094 ev_set_priority (&childev, EV_MAXPRI);
1629 ev_signal_start (EV_A_ &childev); 2095 ev_signal_start (EV_A_ &childev);
1630 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2096 ev_unref (EV_A); /* child watcher should not keep loop alive */
1631#endif 2097#endif
… …
1636 2102
1637 return ev_default_loop_ptr; 2103 return ev_default_loop_ptr;
1638} 2104}
1639 2105
1640void 2106void
1641ev_default_destroy (void) 2107ev_loop_fork (EV_P)
1642{ 2108{
1643#if EV_MULTIPLICITY
1644 struct ev_loop *loop = ev_default_loop_ptr;
1645#endif
1646
1647 ev_default_loop_ptr = 0;
1648
1649#ifndef _WIN32
1650 ev_ref (EV_A); /* child watcher */
1651 ev_signal_stop (EV_A_ &childev);
1652#endif
1653
1654 loop_destroy (EV_A);
1655}
1656
1657void
1658ev_default_fork (void)
1659{
1660#if EV_MULTIPLICITY
1661 struct ev_loop *loop = ev_default_loop_ptr;
1662#endif
1663
1664 postfork = 1; /* must be in line with ev_loop_fork */ 2109 postfork = 1; /* must be in line with ev_default_fork */
1665} 2110}
1666 2111
1667/*****************************************************************************/ 2112/*****************************************************************************/
1668 2113
1669void 2114void
1670ev_invoke (EV_P_ void *w, int revents) 2115ev_invoke (EV_P_ void *w, int revents)
1671{ 2116{
1672 EV_CB_INVOKE ((W)w, revents); 2117 EV_CB_INVOKE ((W)w, revents);
1673} 2118}
1674 2119
1675void inline_speed 2120unsigned int
1676call_pending (EV_P) 2121ev_pending_count (EV_P)
2122{
2123 int pri;
2124 unsigned int count = 0;
2125
2126 for (pri = NUMPRI; pri--; )
2127 count += pendingcnt [pri];
2128
2129 return count;
2130}
2131
2132void noinline
2133ev_invoke_pending (EV_P)
1677{ 2134{
1678 int pri; 2135 int pri;
1679 2136
1680 for (pri = NUMPRI; pri--; ) 2137 for (pri = NUMPRI; pri--; )
1681 while (pendingcnt [pri]) 2138 while (pendingcnt [pri])
1682 { 2139 {
1683 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1684 2141
1685 if (expect_true (p->w))
1686 {
1687 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1688
1689 p->w->pending = 0; 2142 p->w->pending = 0;
1690 EV_CB_INVOKE (p->w, p->events); 2143 EV_CB_INVOKE (p->w, p->events);
1691 EV_FREQUENT_CHECK; 2144 EV_FREQUENT_CHECK;
1692 }
1693 } 2145 }
1694} 2146}
1695 2147
1696#if EV_IDLE_ENABLE 2148#if EV_IDLE_ENABLE
1697void inline_size 2149/* make idle watchers pending. this handles the "call-idle */
2150/* only when higher priorities are idle" logic */
2151inline_size void
1698idle_reify (EV_P) 2152idle_reify (EV_P)
1699{ 2153{
1700 if (expect_false (idleall)) 2154 if (expect_false (idleall))
1701 { 2155 {
1702 int pri; 2156 int pri;
… …
1714 } 2168 }
1715 } 2169 }
1716} 2170}
1717#endif 2171#endif
1718 2172
1719void inline_size 2173/* make timers pending */
2174inline_size void
1720timers_reify (EV_P) 2175timers_reify (EV_P)
1721{ 2176{
1722 EV_FREQUENT_CHECK; 2177 EV_FREQUENT_CHECK;
1723 2178
1724 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2179 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1725 { 2180 {
1726 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2181 do
1727
1728 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1729
1730 /* first reschedule or stop timer */
1731 if (w->repeat)
1732 { 2182 {
2183 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2184
2185 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2186
2187 /* first reschedule or stop timer */
2188 if (w->repeat)
2189 {
1733 ev_at (w) += w->repeat; 2190 ev_at (w) += w->repeat;
1734 if (ev_at (w) < mn_now) 2191 if (ev_at (w) < mn_now)
1735 ev_at (w) = mn_now; 2192 ev_at (w) = mn_now;
1736 2193
1737 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2194 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1738 2195
1739 ANHE_at_cache (timers [HEAP0]); 2196 ANHE_at_cache (timers [HEAP0]);
1740 downheap (timers, timercnt, HEAP0); 2197 downheap (timers, timercnt, HEAP0);
2198 }
2199 else
2200 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2201
2202 EV_FREQUENT_CHECK;
2203 feed_reverse (EV_A_ (W)w);
1741 } 2204 }
1742 else 2205 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1743 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1744 2206
1745 EV_FREQUENT_CHECK; 2207 feed_reverse_done (EV_A_ EV_TIMER);
1746 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1747 } 2208 }
1748} 2209}
1749 2210
1750#if EV_PERIODIC_ENABLE 2211#if EV_PERIODIC_ENABLE
1751void inline_size 2212
2213inline_speed void
2214periodic_recalc (EV_P_ ev_periodic *w)
2215{
2216 /* TODO: use slow but potentially more correct incremental algo, */
2217 /* also do not rely on ceil */
2218 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2219}
2220
2221/* make periodics pending */
2222inline_size void
1752periodics_reify (EV_P) 2223periodics_reify (EV_P)
1753{ 2224{
1754 EV_FREQUENT_CHECK; 2225 EV_FREQUENT_CHECK;
1755 2226
1756 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2227 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1757 { 2228 {
1758 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2229 int feed_count = 0;
1759 2230
1760 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2231 do
1761
1762 /* first reschedule or stop timer */
1763 if (w->reschedule_cb)
1764 { 2232 {
2233 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2234
2235 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2236
2237 /* first reschedule or stop timer */
2238 if (w->reschedule_cb)
2239 {
1765 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2240 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1766 2241
1767 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2242 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1768 2243
1769 ANHE_at_cache (periodics [HEAP0]); 2244 ANHE_at_cache (periodics [HEAP0]);
1770 downheap (periodics, periodiccnt, HEAP0); 2245 downheap (periodics, periodiccnt, HEAP0);
2246 }
2247 else if (w->interval)
2248 {
2249 periodic_recalc (EV_A_ w);
2250
2251 /* if next trigger time is not sufficiently in the future, put it there */
2252 /* this might happen because of floating point inexactness */
2253 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2254 {
2255 ev_at (w) += w->interval;
2256
2257 /* if interval is unreasonably low we might still have a time in the past */
2258 /* so correct this. this will make the periodic very inexact, but the user */
2259 /* has effectively asked to get triggered more often than possible */
2260 if (ev_at (w) < ev_rt_now)
2261 ev_at (w) = ev_rt_now;
2262 }
2263
2264 ANHE_at_cache (periodics [HEAP0]);
2265 downheap (periodics, periodiccnt, HEAP0);
2266 }
2267 else
2268 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2269
2270 EV_FREQUENT_CHECK;
2271 feed_reverse (EV_A_ (W)w);
1771 } 2272 }
1772 else if (w->interval) 2273 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1773 {
1774 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1775 /* if next trigger time is not sufficiently in the future, put it there */
1776 /* this might happen because of floating point inexactness */
1777 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1778 {
1779 ev_at (w) += w->interval;
1780 2274
1781 /* if interval is unreasonably low we might still have a time in the past */
1782 /* so correct this. this will make the periodic very inexact, but the user */
1783 /* has effectively asked to get triggered more often than possible */
1784 if (ev_at (w) < ev_rt_now)
1785 ev_at (w) = ev_rt_now;
1786 }
1787
1788 ANHE_at_cache (periodics [HEAP0]);
1789 downheap (periodics, periodiccnt, HEAP0);
1790 }
1791 else
1792 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1793
1794 EV_FREQUENT_CHECK;
1795 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2275 feed_reverse_done (EV_A_ EV_PERIODIC);
1796 } 2276 }
1797} 2277}
1798 2278
2279/* simply recalculate all periodics */
2280/* TODO: maybe ensure that at least one event happens when jumping forward? */
1799static void noinline 2281static void noinline
1800periodics_reschedule (EV_P) 2282periodics_reschedule (EV_P)
1801{ 2283{
1802 int i; 2284 int i;
1803 2285
… …
1807 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2289 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1808 2290
1809 if (w->reschedule_cb) 2291 if (w->reschedule_cb)
1810 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2292 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1811 else if (w->interval) 2293 else if (w->interval)
1812 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2294 periodic_recalc (EV_A_ w);
1813 2295
1814 ANHE_at_cache (periodics [i]); 2296 ANHE_at_cache (periodics [i]);
1815 } 2297 }
1816 2298
1817 reheap (periodics, periodiccnt); 2299 reheap (periodics, periodiccnt);
1818} 2300}
1819#endif 2301#endif
1820 2302
1821void inline_speed 2303/* adjust all timers by a given offset */
2304static void noinline
2305timers_reschedule (EV_P_ ev_tstamp adjust)
2306{
2307 int i;
2308
2309 for (i = 0; i < timercnt; ++i)
2310 {
2311 ANHE *he = timers + i + HEAP0;
2312 ANHE_w (*he)->at += adjust;
2313 ANHE_at_cache (*he);
2314 }
2315}
2316
2317/* fetch new monotonic and realtime times from the kernel */
2318/* also detect if there was a timejump, and act accordingly */
2319inline_speed void
1822time_update (EV_P_ ev_tstamp max_block) 2320time_update (EV_P_ ev_tstamp max_block)
1823{ 2321{
1824 int i;
1825
1826#if EV_USE_MONOTONIC 2322#if EV_USE_MONOTONIC
1827 if (expect_true (have_monotonic)) 2323 if (expect_true (have_monotonic))
1828 { 2324 {
2325 int i;
1829 ev_tstamp odiff = rtmn_diff; 2326 ev_tstamp odiff = rtmn_diff;
1830 2327
1831 mn_now = get_clock (); 2328 mn_now = get_clock ();
1832 2329
1833 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2330 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1859 ev_rt_now = ev_time (); 2356 ev_rt_now = ev_time ();
1860 mn_now = get_clock (); 2357 mn_now = get_clock ();
1861 now_floor = mn_now; 2358 now_floor = mn_now;
1862 } 2359 }
1863 2360
2361 /* no timer adjustment, as the monotonic clock doesn't jump */
2362 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1864# if EV_PERIODIC_ENABLE 2363# if EV_PERIODIC_ENABLE
1865 periodics_reschedule (EV_A); 2364 periodics_reschedule (EV_A);
1866# endif 2365# endif
1867 /* no timer adjustment, as the monotonic clock doesn't jump */
1868 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869 } 2366 }
1870 else 2367 else
1871#endif 2368#endif
1872 { 2369 {
1873 ev_rt_now = ev_time (); 2370 ev_rt_now = ev_time ();
1874 2371
1875 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1876 { 2373 {
2374 /* adjust timers. this is easy, as the offset is the same for all of them */
2375 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1877#if EV_PERIODIC_ENABLE 2376#if EV_PERIODIC_ENABLE
1878 periodics_reschedule (EV_A); 2377 periodics_reschedule (EV_A);
1879#endif 2378#endif
1880 /* adjust timers. this is easy, as the offset is the same for all of them */
1881 for (i = 0; i < timercnt; ++i)
1882 {
1883 ANHE *he = timers + i + HEAP0;
1884 ANHE_w (*he)->at += ev_rt_now - mn_now;
1885 ANHE_at_cache (*he);
1886 }
1887 } 2379 }
1888 2380
1889 mn_now = ev_rt_now; 2381 mn_now = ev_rt_now;
1890 } 2382 }
1891} 2383}
1892 2384
1893void 2385void
1894ev_ref (EV_P)
1895{
1896 ++activecnt;
1897}
1898
1899void
1900ev_unref (EV_P)
1901{
1902 --activecnt;
1903}
1904
1905void
1906ev_now_update (EV_P)
1907{
1908 time_update (EV_A_ 1e100);
1909}
1910
1911static int loop_done;
1912
1913void
1914ev_loop (EV_P_ int flags) 2386ev_run (EV_P_ int flags)
1915{ 2387{
2388#if EV_FEATURE_API
2389 ++loop_depth;
2390#endif
2391
2392 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2393
1916 loop_done = EVUNLOOP_CANCEL; 2394 loop_done = EVBREAK_CANCEL;
1917 2395
1918 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2396 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1919 2397
1920 do 2398 do
1921 { 2399 {
1922#if EV_VERIFY >= 2 2400#if EV_VERIFY >= 2
1923 ev_loop_verify (EV_A); 2401 ev_verify (EV_A);
1924#endif 2402#endif
1925 2403
1926#ifndef _WIN32 2404#ifndef _WIN32
1927 if (expect_false (curpid)) /* penalise the forking check even more */ 2405 if (expect_false (curpid)) /* penalise the forking check even more */
1928 if (expect_false (getpid () != curpid)) 2406 if (expect_false (getpid () != curpid))
… …
1936 /* we might have forked, so queue fork handlers */ 2414 /* we might have forked, so queue fork handlers */
1937 if (expect_false (postfork)) 2415 if (expect_false (postfork))
1938 if (forkcnt) 2416 if (forkcnt)
1939 { 2417 {
1940 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2418 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1941 call_pending (EV_A); 2419 EV_INVOKE_PENDING;
1942 } 2420 }
1943#endif 2421#endif
1944 2422
2423#if EV_PREPARE_ENABLE
1945 /* queue prepare watchers (and execute them) */ 2424 /* queue prepare watchers (and execute them) */
1946 if (expect_false (preparecnt)) 2425 if (expect_false (preparecnt))
1947 { 2426 {
1948 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2427 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1949 call_pending (EV_A); 2428 EV_INVOKE_PENDING;
1950 } 2429 }
2430#endif
1951 2431
1952 if (expect_false (!activecnt)) 2432 if (expect_false (loop_done))
1953 break; 2433 break;
1954 2434
1955 /* we might have forked, so reify kernel state if necessary */ 2435 /* we might have forked, so reify kernel state if necessary */
1956 if (expect_false (postfork)) 2436 if (expect_false (postfork))
1957 loop_fork (EV_A); 2437 loop_fork (EV_A);
… …
1962 /* calculate blocking time */ 2442 /* calculate blocking time */
1963 { 2443 {
1964 ev_tstamp waittime = 0.; 2444 ev_tstamp waittime = 0.;
1965 ev_tstamp sleeptime = 0.; 2445 ev_tstamp sleeptime = 0.;
1966 2446
2447 /* remember old timestamp for io_blocktime calculation */
2448 ev_tstamp prev_mn_now = mn_now;
2449
2450 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100);
2452
1967 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1968 { 2454 {
1969 /* update time to cancel out callback processing overhead */
1970 time_update (EV_A_ 1e100);
1971
1972 waittime = MAX_BLOCKTIME; 2455 waittime = MAX_BLOCKTIME;
1973 2456
1974 if (timercnt) 2457 if (timercnt)
1975 { 2458 {
1976 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1983 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2466 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1984 if (waittime > to) waittime = to; 2467 if (waittime > to) waittime = to;
1985 } 2468 }
1986#endif 2469#endif
1987 2470
2471 /* don't let timeouts decrease the waittime below timeout_blocktime */
1988 if (expect_false (waittime < timeout_blocktime)) 2472 if (expect_false (waittime < timeout_blocktime))
1989 waittime = timeout_blocktime; 2473 waittime = timeout_blocktime;
1990 2474
1991 sleeptime = waittime - backend_fudge; 2475 /* extra check because io_blocktime is commonly 0 */
1992
1993 if (expect_true (sleeptime > io_blocktime)) 2476 if (expect_false (io_blocktime))
1994 sleeptime = io_blocktime;
1995
1996 if (sleeptime)
1997 { 2477 {
2478 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2479
2480 if (sleeptime > waittime - backend_fudge)
2481 sleeptime = waittime - backend_fudge;
2482
2483 if (expect_true (sleeptime > 0.))
2484 {
1998 ev_sleep (sleeptime); 2485 ev_sleep (sleeptime);
1999 waittime -= sleeptime; 2486 waittime -= sleeptime;
2487 }
2000 } 2488 }
2001 } 2489 }
2002 2490
2491#if EV_FEATURE_API
2003 ++loop_count; 2492 ++loop_count;
2493#endif
2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2004 backend_poll (EV_A_ waittime); 2495 backend_poll (EV_A_ waittime);
2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2005 2497
2006 /* update ev_rt_now, do magic */ 2498 /* update ev_rt_now, do magic */
2007 time_update (EV_A_ waittime + sleeptime); 2499 time_update (EV_A_ waittime + sleeptime);
2008 } 2500 }
2009 2501
… …
2016#if EV_IDLE_ENABLE 2508#if EV_IDLE_ENABLE
2017 /* queue idle watchers unless other events are pending */ 2509 /* queue idle watchers unless other events are pending */
2018 idle_reify (EV_A); 2510 idle_reify (EV_A);
2019#endif 2511#endif
2020 2512
2513#if EV_CHECK_ENABLE
2021 /* queue check watchers, to be executed first */ 2514 /* queue check watchers, to be executed first */
2022 if (expect_false (checkcnt)) 2515 if (expect_false (checkcnt))
2023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2516 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2517#endif
2024 2518
2025 call_pending (EV_A); 2519 EV_INVOKE_PENDING;
2026 } 2520 }
2027 while (expect_true ( 2521 while (expect_true (
2028 activecnt 2522 activecnt
2029 && !loop_done 2523 && !loop_done
2030 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2524 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2031 )); 2525 ));
2032 2526
2033 if (loop_done == EVUNLOOP_ONE) 2527 if (loop_done == EVBREAK_ONE)
2034 loop_done = EVUNLOOP_CANCEL; 2528 loop_done = EVBREAK_CANCEL;
2035}
2036 2529
2530#if EV_FEATURE_API
2531 --loop_depth;
2532#endif
2533}
2534
2037void 2535void
2038ev_unloop (EV_P_ int how) 2536ev_break (EV_P_ int how)
2039{ 2537{
2040 loop_done = how; 2538 loop_done = how;
2041} 2539}
2042 2540
2541void
2542ev_ref (EV_P)
2543{
2544 ++activecnt;
2545}
2546
2547void
2548ev_unref (EV_P)
2549{
2550 --activecnt;
2551}
2552
2553void
2554ev_now_update (EV_P)
2555{
2556 time_update (EV_A_ 1e100);
2557}
2558
2559void
2560ev_suspend (EV_P)
2561{
2562 ev_now_update (EV_A);
2563}
2564
2565void
2566ev_resume (EV_P)
2567{
2568 ev_tstamp mn_prev = mn_now;
2569
2570 ev_now_update (EV_A);
2571 timers_reschedule (EV_A_ mn_now - mn_prev);
2572#if EV_PERIODIC_ENABLE
2573 /* TODO: really do this? */
2574 periodics_reschedule (EV_A);
2575#endif
2576}
2577
2043/*****************************************************************************/ 2578/*****************************************************************************/
2579/* singly-linked list management, used when the expected list length is short */
2044 2580
2045void inline_size 2581inline_size void
2046wlist_add (WL *head, WL elem) 2582wlist_add (WL *head, WL elem)
2047{ 2583{
2048 elem->next = *head; 2584 elem->next = *head;
2049 *head = elem; 2585 *head = elem;
2050} 2586}
2051 2587
2052void inline_size 2588inline_size void
2053wlist_del (WL *head, WL elem) 2589wlist_del (WL *head, WL elem)
2054{ 2590{
2055 while (*head) 2591 while (*head)
2056 { 2592 {
2057 if (*head == elem) 2593 if (expect_true (*head == elem))
2058 { 2594 {
2059 *head = elem->next; 2595 *head = elem->next;
2060 return; 2596 break;
2061 } 2597 }
2062 2598
2063 head = &(*head)->next; 2599 head = &(*head)->next;
2064 } 2600 }
2065} 2601}
2066 2602
2067void inline_speed 2603/* internal, faster, version of ev_clear_pending */
2604inline_speed void
2068clear_pending (EV_P_ W w) 2605clear_pending (EV_P_ W w)
2069{ 2606{
2070 if (w->pending) 2607 if (w->pending)
2071 { 2608 {
2072 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2609 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2073 w->pending = 0; 2610 w->pending = 0;
2074 } 2611 }
2075} 2612}
2076 2613
2077int 2614int
… …
2081 int pending = w_->pending; 2618 int pending = w_->pending;
2082 2619
2083 if (expect_true (pending)) 2620 if (expect_true (pending))
2084 { 2621 {
2085 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2622 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2623 p->w = (W)&pending_w;
2086 w_->pending = 0; 2624 w_->pending = 0;
2087 p->w = 0;
2088 return p->events; 2625 return p->events;
2089 } 2626 }
2090 else 2627 else
2091 return 0; 2628 return 0;
2092} 2629}
2093 2630
2094void inline_size 2631inline_size void
2095pri_adjust (EV_P_ W w) 2632pri_adjust (EV_P_ W w)
2096{ 2633{
2097 int pri = w->priority; 2634 int pri = ev_priority (w);
2098 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2635 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2099 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2636 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2100 w->priority = pri; 2637 ev_set_priority (w, pri);
2101} 2638}
2102 2639
2103void inline_speed 2640inline_speed void
2104ev_start (EV_P_ W w, int active) 2641ev_start (EV_P_ W w, int active)
2105{ 2642{
2106 pri_adjust (EV_A_ w); 2643 pri_adjust (EV_A_ w);
2107 w->active = active; 2644 w->active = active;
2108 ev_ref (EV_A); 2645 ev_ref (EV_A);
2109} 2646}
2110 2647
2111void inline_size 2648inline_size void
2112ev_stop (EV_P_ W w) 2649ev_stop (EV_P_ W w)
2113{ 2650{
2114 ev_unref (EV_A); 2651 ev_unref (EV_A);
2115 w->active = 0; 2652 w->active = 0;
2116} 2653}
… …
2123 int fd = w->fd; 2660 int fd = w->fd;
2124 2661
2125 if (expect_false (ev_is_active (w))) 2662 if (expect_false (ev_is_active (w)))
2126 return; 2663 return;
2127 2664
2128 assert (("ev_io_start called with negative fd", fd >= 0)); 2665 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2129 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2666 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2130 2667
2131 EV_FREQUENT_CHECK; 2668 EV_FREQUENT_CHECK;
2132 2669
2133 ev_start (EV_A_ (W)w, 1); 2670 ev_start (EV_A_ (W)w, 1);
2134 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2671 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2135 wlist_add (&anfds[fd].head, (WL)w); 2672 wlist_add (&anfds[fd].head, (WL)w);
2136 2673
2137 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2674 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2138 w->events &= ~EV_IOFDSET; 2675 w->events &= ~EV__IOFDSET;
2139 2676
2140 EV_FREQUENT_CHECK; 2677 EV_FREQUENT_CHECK;
2141} 2678}
2142 2679
2143void noinline 2680void noinline
… …
2145{ 2682{
2146 clear_pending (EV_A_ (W)w); 2683 clear_pending (EV_A_ (W)w);
2147 if (expect_false (!ev_is_active (w))) 2684 if (expect_false (!ev_is_active (w)))
2148 return; 2685 return;
2149 2686
2150 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2687 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2151 2688
2152 EV_FREQUENT_CHECK; 2689 EV_FREQUENT_CHECK;
2153 2690
2154 wlist_del (&anfds[w->fd].head, (WL)w); 2691 wlist_del (&anfds[w->fd].head, (WL)w);
2155 ev_stop (EV_A_ (W)w); 2692 ev_stop (EV_A_ (W)w);
2156 2693
2157 fd_change (EV_A_ w->fd, 1); 2694 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2158 2695
2159 EV_FREQUENT_CHECK; 2696 EV_FREQUENT_CHECK;
2160} 2697}
2161 2698
2162void noinline 2699void noinline
… …
2165 if (expect_false (ev_is_active (w))) 2702 if (expect_false (ev_is_active (w)))
2166 return; 2703 return;
2167 2704
2168 ev_at (w) += mn_now; 2705 ev_at (w) += mn_now;
2169 2706
2170 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2707 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2171 2708
2172 EV_FREQUENT_CHECK; 2709 EV_FREQUENT_CHECK;
2173 2710
2174 ++timercnt; 2711 ++timercnt;
2175 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2712 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2178 ANHE_at_cache (timers [ev_active (w)]); 2715 ANHE_at_cache (timers [ev_active (w)]);
2179 upheap (timers, ev_active (w)); 2716 upheap (timers, ev_active (w));
2180 2717
2181 EV_FREQUENT_CHECK; 2718 EV_FREQUENT_CHECK;
2182 2719
2183 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2720 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2184} 2721}
2185 2722
2186void noinline 2723void noinline
2187ev_timer_stop (EV_P_ ev_timer *w) 2724ev_timer_stop (EV_P_ ev_timer *w)
2188{ 2725{
… …
2193 EV_FREQUENT_CHECK; 2730 EV_FREQUENT_CHECK;
2194 2731
2195 { 2732 {
2196 int active = ev_active (w); 2733 int active = ev_active (w);
2197 2734
2198 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2735 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2199 2736
2200 --timercnt; 2737 --timercnt;
2201 2738
2202 if (expect_true (active < timercnt + HEAP0)) 2739 if (expect_true (active < timercnt + HEAP0))
2203 { 2740 {
2204 timers [active] = timers [timercnt + HEAP0]; 2741 timers [active] = timers [timercnt + HEAP0];
2205 adjustheap (timers, timercnt, active); 2742 adjustheap (timers, timercnt, active);
2206 } 2743 }
2207 } 2744 }
2208 2745
2209 EV_FREQUENT_CHECK;
2210
2211 ev_at (w) -= mn_now; 2746 ev_at (w) -= mn_now;
2212 2747
2213 ev_stop (EV_A_ (W)w); 2748 ev_stop (EV_A_ (W)w);
2749
2750 EV_FREQUENT_CHECK;
2214} 2751}
2215 2752
2216void noinline 2753void noinline
2217ev_timer_again (EV_P_ ev_timer *w) 2754ev_timer_again (EV_P_ ev_timer *w)
2218{ 2755{
… …
2236 } 2773 }
2237 2774
2238 EV_FREQUENT_CHECK; 2775 EV_FREQUENT_CHECK;
2239} 2776}
2240 2777
2778ev_tstamp
2779ev_timer_remaining (EV_P_ ev_timer *w)
2780{
2781 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2782}
2783
2241#if EV_PERIODIC_ENABLE 2784#if EV_PERIODIC_ENABLE
2242void noinline 2785void noinline
2243ev_periodic_start (EV_P_ ev_periodic *w) 2786ev_periodic_start (EV_P_ ev_periodic *w)
2244{ 2787{
2245 if (expect_false (ev_is_active (w))) 2788 if (expect_false (ev_is_active (w)))
… …
2247 2790
2248 if (w->reschedule_cb) 2791 if (w->reschedule_cb)
2249 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2792 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2250 else if (w->interval) 2793 else if (w->interval)
2251 { 2794 {
2252 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2795 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2253 /* this formula differs from the one in periodic_reify because we do not always round up */ 2796 periodic_recalc (EV_A_ w);
2254 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2255 } 2797 }
2256 else 2798 else
2257 ev_at (w) = w->offset; 2799 ev_at (w) = w->offset;
2258 2800
2259 EV_FREQUENT_CHECK; 2801 EV_FREQUENT_CHECK;
… …
2265 ANHE_at_cache (periodics [ev_active (w)]); 2807 ANHE_at_cache (periodics [ev_active (w)]);
2266 upheap (periodics, ev_active (w)); 2808 upheap (periodics, ev_active (w));
2267 2809
2268 EV_FREQUENT_CHECK; 2810 EV_FREQUENT_CHECK;
2269 2811
2270 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2812 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2271} 2813}
2272 2814
2273void noinline 2815void noinline
2274ev_periodic_stop (EV_P_ ev_periodic *w) 2816ev_periodic_stop (EV_P_ ev_periodic *w)
2275{ 2817{
… …
2280 EV_FREQUENT_CHECK; 2822 EV_FREQUENT_CHECK;
2281 2823
2282 { 2824 {
2283 int active = ev_active (w); 2825 int active = ev_active (w);
2284 2826
2285 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2827 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2286 2828
2287 --periodiccnt; 2829 --periodiccnt;
2288 2830
2289 if (expect_true (active < periodiccnt + HEAP0)) 2831 if (expect_true (active < periodiccnt + HEAP0))
2290 { 2832 {
2291 periodics [active] = periodics [periodiccnt + HEAP0]; 2833 periodics [active] = periodics [periodiccnt + HEAP0];
2292 adjustheap (periodics, periodiccnt, active); 2834 adjustheap (periodics, periodiccnt, active);
2293 } 2835 }
2294 } 2836 }
2295 2837
2296 EV_FREQUENT_CHECK;
2297
2298 ev_stop (EV_A_ (W)w); 2838 ev_stop (EV_A_ (W)w);
2839
2840 EV_FREQUENT_CHECK;
2299} 2841}
2300 2842
2301void noinline 2843void noinline
2302ev_periodic_again (EV_P_ ev_periodic *w) 2844ev_periodic_again (EV_P_ ev_periodic *w)
2303{ 2845{
… …
2309 2851
2310#ifndef SA_RESTART 2852#ifndef SA_RESTART
2311# define SA_RESTART 0 2853# define SA_RESTART 0
2312#endif 2854#endif
2313 2855
2856#if EV_SIGNAL_ENABLE
2857
2314void noinline 2858void noinline
2315ev_signal_start (EV_P_ ev_signal *w) 2859ev_signal_start (EV_P_ ev_signal *w)
2316{ 2860{
2317#if EV_MULTIPLICITY
2318 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2319#endif
2320 if (expect_false (ev_is_active (w))) 2861 if (expect_false (ev_is_active (w)))
2321 return; 2862 return;
2322 2863
2323 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2864 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2324 2865
2325 evpipe_init (EV_A); 2866#if EV_MULTIPLICITY
2867 assert (("libev: a signal must not be attached to two different loops",
2868 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2326 2869
2327 EV_FREQUENT_CHECK; 2870 signals [w->signum - 1].loop = EV_A;
2871#endif
2328 2872
2873 EV_FREQUENT_CHECK;
2874
2875#if EV_USE_SIGNALFD
2876 if (sigfd == -2)
2329 { 2877 {
2330#ifndef _WIN32 2878 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2331 sigset_t full, prev; 2879 if (sigfd < 0 && errno == EINVAL)
2332 sigfillset (&full); 2880 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2333 sigprocmask (SIG_SETMASK, &full, &prev);
2334#endif
2335 2881
2336 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2882 if (sigfd >= 0)
2883 {
2884 fd_intern (sigfd); /* doing it twice will not hurt */
2337 2885
2338#ifndef _WIN32 2886 sigemptyset (&sigfd_set);
2339 sigprocmask (SIG_SETMASK, &prev, 0); 2887
2340#endif 2888 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2889 ev_set_priority (&sigfd_w, EV_MAXPRI);
2890 ev_io_start (EV_A_ &sigfd_w);
2891 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2892 }
2341 } 2893 }
2894
2895 if (sigfd >= 0)
2896 {
2897 /* TODO: check .head */
2898 sigaddset (&sigfd_set, w->signum);
2899 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2900
2901 signalfd (sigfd, &sigfd_set, 0);
2902 }
2903#endif
2342 2904
2343 ev_start (EV_A_ (W)w, 1); 2905 ev_start (EV_A_ (W)w, 1);
2344 wlist_add (&signals [w->signum - 1].head, (WL)w); 2906 wlist_add (&signals [w->signum - 1].head, (WL)w);
2345 2907
2346 if (!((WL)w)->next) 2908 if (!((WL)w)->next)
2909# if EV_USE_SIGNALFD
2910 if (sigfd < 0) /*TODO*/
2911# endif
2347 { 2912 {
2348#if _WIN32 2913# ifdef _WIN32
2914 evpipe_init (EV_A);
2915
2349 signal (w->signum, ev_sighandler); 2916 signal (w->signum, ev_sighandler);
2350#else 2917# else
2351 struct sigaction sa; 2918 struct sigaction sa;
2919
2920 evpipe_init (EV_A);
2921
2352 sa.sa_handler = ev_sighandler; 2922 sa.sa_handler = ev_sighandler;
2353 sigfillset (&sa.sa_mask); 2923 sigfillset (&sa.sa_mask);
2354 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2924 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2355 sigaction (w->signum, &sa, 0); 2925 sigaction (w->signum, &sa, 0);
2926
2927 if (origflags & EVFLAG_NOSIGMASK)
2928 {
2929 sigemptyset (&sa.sa_mask);
2930 sigaddset (&sa.sa_mask, w->signum);
2931 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2932 }
2356#endif 2933#endif
2357 } 2934 }
2358 2935
2359 EV_FREQUENT_CHECK; 2936 EV_FREQUENT_CHECK;
2360} 2937}
2361 2938
2362void noinline 2939void noinline
… …
2370 2947
2371 wlist_del (&signals [w->signum - 1].head, (WL)w); 2948 wlist_del (&signals [w->signum - 1].head, (WL)w);
2372 ev_stop (EV_A_ (W)w); 2949 ev_stop (EV_A_ (W)w);
2373 2950
2374 if (!signals [w->signum - 1].head) 2951 if (!signals [w->signum - 1].head)
2952 {
2953#if EV_MULTIPLICITY
2954 signals [w->signum - 1].loop = 0; /* unattach from signal */
2955#endif
2956#if EV_USE_SIGNALFD
2957 if (sigfd >= 0)
2958 {
2959 sigset_t ss;
2960
2961 sigemptyset (&ss);
2962 sigaddset (&ss, w->signum);
2963 sigdelset (&sigfd_set, w->signum);
2964
2965 signalfd (sigfd, &sigfd_set, 0);
2966 sigprocmask (SIG_UNBLOCK, &ss, 0);
2967 }
2968 else
2969#endif
2375 signal (w->signum, SIG_DFL); 2970 signal (w->signum, SIG_DFL);
2971 }
2376 2972
2377 EV_FREQUENT_CHECK; 2973 EV_FREQUENT_CHECK;
2378} 2974}
2975
2976#endif
2977
2978#if EV_CHILD_ENABLE
2379 2979
2380void 2980void
2381ev_child_start (EV_P_ ev_child *w) 2981ev_child_start (EV_P_ ev_child *w)
2382{ 2982{
2383#if EV_MULTIPLICITY 2983#if EV_MULTIPLICITY
2384 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2984 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2385#endif 2985#endif
2386 if (expect_false (ev_is_active (w))) 2986 if (expect_false (ev_is_active (w)))
2387 return; 2987 return;
2388 2988
2389 EV_FREQUENT_CHECK; 2989 EV_FREQUENT_CHECK;
2390 2990
2391 ev_start (EV_A_ (W)w, 1); 2991 ev_start (EV_A_ (W)w, 1);
2392 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2992 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2393 2993
2394 EV_FREQUENT_CHECK; 2994 EV_FREQUENT_CHECK;
2395} 2995}
2396 2996
2397void 2997void
… …
2401 if (expect_false (!ev_is_active (w))) 3001 if (expect_false (!ev_is_active (w)))
2402 return; 3002 return;
2403 3003
2404 EV_FREQUENT_CHECK; 3004 EV_FREQUENT_CHECK;
2405 3005
2406 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3006 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2407 ev_stop (EV_A_ (W)w); 3007 ev_stop (EV_A_ (W)w);
2408 3008
2409 EV_FREQUENT_CHECK; 3009 EV_FREQUENT_CHECK;
2410} 3010}
3011
3012#endif
2411 3013
2412#if EV_STAT_ENABLE 3014#if EV_STAT_ENABLE
2413 3015
2414# ifdef _WIN32 3016# ifdef _WIN32
2415# undef lstat 3017# undef lstat
2416# define lstat(a,b) _stati64 (a,b) 3018# define lstat(a,b) _stati64 (a,b)
2417# endif 3019# endif
2418 3020
2419#define DEF_STAT_INTERVAL 5.0074891 3021#define DEF_STAT_INTERVAL 5.0074891
3022#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2420#define MIN_STAT_INTERVAL 0.1074891 3023#define MIN_STAT_INTERVAL 0.1074891
2421 3024
2422static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3025static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2423 3026
2424#if EV_USE_INOTIFY 3027#if EV_USE_INOTIFY
2425# define EV_INOTIFY_BUFSIZE 8192 3028
3029/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3030# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2426 3031
2427static void noinline 3032static void noinline
2428infy_add (EV_P_ ev_stat *w) 3033infy_add (EV_P_ ev_stat *w)
2429{ 3034{
2430 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3035 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2431 3036
2432 if (w->wd < 0) 3037 if (w->wd >= 0)
3038 {
3039 struct statfs sfs;
3040
3041 /* now local changes will be tracked by inotify, but remote changes won't */
3042 /* unless the filesystem is known to be local, we therefore still poll */
3043 /* also do poll on <2.6.25, but with normal frequency */
3044
3045 if (!fs_2625)
3046 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3047 else if (!statfs (w->path, &sfs)
3048 && (sfs.f_type == 0x1373 /* devfs */
3049 || sfs.f_type == 0xEF53 /* ext2/3 */
3050 || sfs.f_type == 0x3153464a /* jfs */
3051 || sfs.f_type == 0x52654973 /* reiser3 */
3052 || sfs.f_type == 0x01021994 /* tempfs */
3053 || sfs.f_type == 0x58465342 /* xfs */))
3054 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3055 else
3056 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2433 { 3057 }
2434 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3058 else
3059 {
3060 /* can't use inotify, continue to stat */
3061 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2435 3062
2436 /* monitor some parent directory for speedup hints */ 3063 /* if path is not there, monitor some parent directory for speedup hints */
2437 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3064 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2438 /* but an efficiency issue only */ 3065 /* but an efficiency issue only */
2439 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3066 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2440 { 3067 {
2441 char path [4096]; 3068 char path [4096];
… …
2446 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3073 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2447 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3074 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2448 3075
2449 char *pend = strrchr (path, '/'); 3076 char *pend = strrchr (path, '/');
2450 3077
2451 if (!pend) 3078 if (!pend || pend == path)
2452 break; /* whoops, no '/', complain to your admin */ 3079 break;
2453 3080
2454 *pend = 0; 3081 *pend = 0;
2455 w->wd = inotify_add_watch (fs_fd, path, mask); 3082 w->wd = inotify_add_watch (fs_fd, path, mask);
2456 } 3083 }
2457 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3084 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2458 } 3085 }
2459 } 3086 }
2460 else
2461 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2462 3087
2463 if (w->wd >= 0) 3088 if (w->wd >= 0)
2464 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3089 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3090
3091 /* now re-arm timer, if required */
3092 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3093 ev_timer_again (EV_A_ &w->timer);
3094 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2465} 3095}
2466 3096
2467static void noinline 3097static void noinline
2468infy_del (EV_P_ ev_stat *w) 3098infy_del (EV_P_ ev_stat *w)
2469{ 3099{
… …
2472 3102
2473 if (wd < 0) 3103 if (wd < 0)
2474 return; 3104 return;
2475 3105
2476 w->wd = -2; 3106 w->wd = -2;
2477 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3107 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2478 wlist_del (&fs_hash [slot].head, (WL)w); 3108 wlist_del (&fs_hash [slot].head, (WL)w);
2479 3109
2480 /* remove this watcher, if others are watching it, they will rearm */ 3110 /* remove this watcher, if others are watching it, they will rearm */
2481 inotify_rm_watch (fs_fd, wd); 3111 inotify_rm_watch (fs_fd, wd);
2482} 3112}
… …
2484static void noinline 3114static void noinline
2485infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3115infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2486{ 3116{
2487 if (slot < 0) 3117 if (slot < 0)
2488 /* overflow, need to check for all hash slots */ 3118 /* overflow, need to check for all hash slots */
2489 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3119 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2490 infy_wd (EV_A_ slot, wd, ev); 3120 infy_wd (EV_A_ slot, wd, ev);
2491 else 3121 else
2492 { 3122 {
2493 WL w_; 3123 WL w_;
2494 3124
2495 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3125 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2496 { 3126 {
2497 ev_stat *w = (ev_stat *)w_; 3127 ev_stat *w = (ev_stat *)w_;
2498 w_ = w_->next; /* lets us remove this watcher and all before it */ 3128 w_ = w_->next; /* lets us remove this watcher and all before it */
2499 3129
2500 if (w->wd == wd || wd == -1) 3130 if (w->wd == wd || wd == -1)
2501 { 3131 {
2502 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3132 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2503 { 3133 {
3134 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2504 w->wd = -1; 3135 w->wd = -1;
2505 infy_add (EV_A_ w); /* re-add, no matter what */ 3136 infy_add (EV_A_ w); /* re-add, no matter what */
2506 } 3137 }
2507 3138
2508 stat_timer_cb (EV_A_ &w->timer, 0); 3139 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2513 3144
2514static void 3145static void
2515infy_cb (EV_P_ ev_io *w, int revents) 3146infy_cb (EV_P_ ev_io *w, int revents)
2516{ 3147{
2517 char buf [EV_INOTIFY_BUFSIZE]; 3148 char buf [EV_INOTIFY_BUFSIZE];
2518 struct inotify_event *ev = (struct inotify_event *)buf;
2519 int ofs; 3149 int ofs;
2520 int len = read (fs_fd, buf, sizeof (buf)); 3150 int len = read (fs_fd, buf, sizeof (buf));
2521 3151
2522 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3152 for (ofs = 0; ofs < len; )
3153 {
3154 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2523 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3155 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156 ofs += sizeof (struct inotify_event) + ev->len;
3157 }
2524} 3158}
2525 3159
2526void inline_size 3160inline_size void
2527infy_init (EV_P) 3161ev_check_2625 (EV_P)
2528{ 3162{
2529 if (fs_fd != -2)
2530 return;
2531
2532 /* kernels < 2.6.25 are borked 3163 /* kernels < 2.6.25 are borked
2533 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3164 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2534 */ 3165 */
2535 { 3166 if (ev_linux_version () < 0x020619)
2536 struct utsname buf; 3167 return;
2537 int major, minor, micro;
2538 3168
3169 fs_2625 = 1;
3170}
3171
3172inline_size int
3173infy_newfd (void)
3174{
3175#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3176 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3177 if (fd >= 0)
3178 return fd;
3179#endif
3180 return inotify_init ();
3181}
3182
3183inline_size void
3184infy_init (EV_P)
3185{
3186 if (fs_fd != -2)
3187 return;
3188
2539 fs_fd = -1; 3189 fs_fd = -1;
2540 3190
2541 if (uname (&buf)) 3191 ev_check_2625 (EV_A);
2542 return;
2543 3192
2544 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2545 return;
2546
2547 if (major < 2
2548 || (major == 2 && minor < 6)
2549 || (major == 2 && minor == 6 && micro < 25))
2550 return;
2551 }
2552
2553 fs_fd = inotify_init (); 3193 fs_fd = infy_newfd ();
2554 3194
2555 if (fs_fd >= 0) 3195 if (fs_fd >= 0)
2556 { 3196 {
3197 fd_intern (fs_fd);
2557 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3198 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2558 ev_set_priority (&fs_w, EV_MAXPRI); 3199 ev_set_priority (&fs_w, EV_MAXPRI);
2559 ev_io_start (EV_A_ &fs_w); 3200 ev_io_start (EV_A_ &fs_w);
3201 ev_unref (EV_A);
2560 } 3202 }
2561} 3203}
2562 3204
2563void inline_size 3205inline_size void
2564infy_fork (EV_P) 3206infy_fork (EV_P)
2565{ 3207{
2566 int slot; 3208 int slot;
2567 3209
2568 if (fs_fd < 0) 3210 if (fs_fd < 0)
2569 return; 3211 return;
2570 3212
3213 ev_ref (EV_A);
3214 ev_io_stop (EV_A_ &fs_w);
2571 close (fs_fd); 3215 close (fs_fd);
2572 fs_fd = inotify_init (); 3216 fs_fd = infy_newfd ();
2573 3217
3218 if (fs_fd >= 0)
3219 {
3220 fd_intern (fs_fd);
3221 ev_io_set (&fs_w, fs_fd, EV_READ);
3222 ev_io_start (EV_A_ &fs_w);
3223 ev_unref (EV_A);
3224 }
3225
2574 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3226 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2575 { 3227 {
2576 WL w_ = fs_hash [slot].head; 3228 WL w_ = fs_hash [slot].head;
2577 fs_hash [slot].head = 0; 3229 fs_hash [slot].head = 0;
2578 3230
2579 while (w_) 3231 while (w_)
… …
2584 w->wd = -1; 3236 w->wd = -1;
2585 3237
2586 if (fs_fd >= 0) 3238 if (fs_fd >= 0)
2587 infy_add (EV_A_ w); /* re-add, no matter what */ 3239 infy_add (EV_A_ w); /* re-add, no matter what */
2588 else 3240 else
3241 {
3242 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3243 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2589 ev_timer_start (EV_A_ &w->timer); 3244 ev_timer_again (EV_A_ &w->timer);
3245 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3246 }
2590 } 3247 }
2591 } 3248 }
2592} 3249}
2593 3250
2594#endif 3251#endif
… …
2611static void noinline 3268static void noinline
2612stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3269stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2613{ 3270{
2614 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3271 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2615 3272
2616 /* we copy this here each the time so that */ 3273 ev_statdata prev = w->attr;
2617 /* prev has the old value when the callback gets invoked */
2618 w->prev = w->attr;
2619 ev_stat_stat (EV_A_ w); 3274 ev_stat_stat (EV_A_ w);
2620 3275
2621 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3276 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2622 if ( 3277 if (
2623 w->prev.st_dev != w->attr.st_dev 3278 prev.st_dev != w->attr.st_dev
2624 || w->prev.st_ino != w->attr.st_ino 3279 || prev.st_ino != w->attr.st_ino
2625 || w->prev.st_mode != w->attr.st_mode 3280 || prev.st_mode != w->attr.st_mode
2626 || w->prev.st_nlink != w->attr.st_nlink 3281 || prev.st_nlink != w->attr.st_nlink
2627 || w->prev.st_uid != w->attr.st_uid 3282 || prev.st_uid != w->attr.st_uid
2628 || w->prev.st_gid != w->attr.st_gid 3283 || prev.st_gid != w->attr.st_gid
2629 || w->prev.st_rdev != w->attr.st_rdev 3284 || prev.st_rdev != w->attr.st_rdev
2630 || w->prev.st_size != w->attr.st_size 3285 || prev.st_size != w->attr.st_size
2631 || w->prev.st_atime != w->attr.st_atime 3286 || prev.st_atime != w->attr.st_atime
2632 || w->prev.st_mtime != w->attr.st_mtime 3287 || prev.st_mtime != w->attr.st_mtime
2633 || w->prev.st_ctime != w->attr.st_ctime 3288 || prev.st_ctime != w->attr.st_ctime
2634 ) { 3289 ) {
3290 /* we only update w->prev on actual differences */
3291 /* in case we test more often than invoke the callback, */
3292 /* to ensure that prev is always different to attr */
3293 w->prev = prev;
3294
2635 #if EV_USE_INOTIFY 3295 #if EV_USE_INOTIFY
2636 if (fs_fd >= 0) 3296 if (fs_fd >= 0)
2637 { 3297 {
2638 infy_del (EV_A_ w); 3298 infy_del (EV_A_ w);
2639 infy_add (EV_A_ w); 3299 infy_add (EV_A_ w);
… …
2649ev_stat_start (EV_P_ ev_stat *w) 3309ev_stat_start (EV_P_ ev_stat *w)
2650{ 3310{
2651 if (expect_false (ev_is_active (w))) 3311 if (expect_false (ev_is_active (w)))
2652 return; 3312 return;
2653 3313
2654 /* since we use memcmp, we need to clear any padding data etc. */
2655 memset (&w->prev, 0, sizeof (ev_statdata));
2656 memset (&w->attr, 0, sizeof (ev_statdata));
2657
2658 ev_stat_stat (EV_A_ w); 3314 ev_stat_stat (EV_A_ w);
2659 3315
3316 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2660 if (w->interval < MIN_STAT_INTERVAL) 3317 w->interval = MIN_STAT_INTERVAL;
2661 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2662 3318
2663 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3319 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2664 ev_set_priority (&w->timer, ev_priority (w)); 3320 ev_set_priority (&w->timer, ev_priority (w));
2665 3321
2666#if EV_USE_INOTIFY 3322#if EV_USE_INOTIFY
2667 infy_init (EV_A); 3323 infy_init (EV_A);
2668 3324
2669 if (fs_fd >= 0) 3325 if (fs_fd >= 0)
2670 infy_add (EV_A_ w); 3326 infy_add (EV_A_ w);
2671 else 3327 else
2672#endif 3328#endif
3329 {
2673 ev_timer_start (EV_A_ &w->timer); 3330 ev_timer_again (EV_A_ &w->timer);
3331 ev_unref (EV_A);
3332 }
2674 3333
2675 ev_start (EV_A_ (W)w, 1); 3334 ev_start (EV_A_ (W)w, 1);
2676 3335
2677 EV_FREQUENT_CHECK; 3336 EV_FREQUENT_CHECK;
2678} 3337}
… …
2687 EV_FREQUENT_CHECK; 3346 EV_FREQUENT_CHECK;
2688 3347
2689#if EV_USE_INOTIFY 3348#if EV_USE_INOTIFY
2690 infy_del (EV_A_ w); 3349 infy_del (EV_A_ w);
2691#endif 3350#endif
3351
3352 if (ev_is_active (&w->timer))
3353 {
3354 ev_ref (EV_A);
2692 ev_timer_stop (EV_A_ &w->timer); 3355 ev_timer_stop (EV_A_ &w->timer);
3356 }
2693 3357
2694 ev_stop (EV_A_ (W)w); 3358 ev_stop (EV_A_ (W)w);
2695 3359
2696 EV_FREQUENT_CHECK; 3360 EV_FREQUENT_CHECK;
2697} 3361}
… …
2742 3406
2743 EV_FREQUENT_CHECK; 3407 EV_FREQUENT_CHECK;
2744} 3408}
2745#endif 3409#endif
2746 3410
3411#if EV_PREPARE_ENABLE
2747void 3412void
2748ev_prepare_start (EV_P_ ev_prepare *w) 3413ev_prepare_start (EV_P_ ev_prepare *w)
2749{ 3414{
2750 if (expect_false (ev_is_active (w))) 3415 if (expect_false (ev_is_active (w)))
2751 return; 3416 return;
… …
2777 3442
2778 ev_stop (EV_A_ (W)w); 3443 ev_stop (EV_A_ (W)w);
2779 3444
2780 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2781} 3446}
3447#endif
2782 3448
3449#if EV_CHECK_ENABLE
2783void 3450void
2784ev_check_start (EV_P_ ev_check *w) 3451ev_check_start (EV_P_ ev_check *w)
2785{ 3452{
2786 if (expect_false (ev_is_active (w))) 3453 if (expect_false (ev_is_active (w)))
2787 return; 3454 return;
… …
2813 3480
2814 ev_stop (EV_A_ (W)w); 3481 ev_stop (EV_A_ (W)w);
2815 3482
2816 EV_FREQUENT_CHECK; 3483 EV_FREQUENT_CHECK;
2817} 3484}
3485#endif
2818 3486
2819#if EV_EMBED_ENABLE 3487#if EV_EMBED_ENABLE
2820void noinline 3488void noinline
2821ev_embed_sweep (EV_P_ ev_embed *w) 3489ev_embed_sweep (EV_P_ ev_embed *w)
2822{ 3490{
2823 ev_loop (w->other, EVLOOP_NONBLOCK); 3491 ev_run (w->other, EVRUN_NOWAIT);
2824} 3492}
2825 3493
2826static void 3494static void
2827embed_io_cb (EV_P_ ev_io *io, int revents) 3495embed_io_cb (EV_P_ ev_io *io, int revents)
2828{ 3496{
2829 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3497 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2830 3498
2831 if (ev_cb (w)) 3499 if (ev_cb (w))
2832 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3500 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2833 else 3501 else
2834 ev_loop (w->other, EVLOOP_NONBLOCK); 3502 ev_run (w->other, EVRUN_NOWAIT);
2835} 3503}
2836 3504
2837static void 3505static void
2838embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3506embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2839{ 3507{
2840 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3508 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2841 3509
2842 { 3510 {
2843 struct ev_loop *loop = w->other; 3511 EV_P = w->other;
2844 3512
2845 while (fdchangecnt) 3513 while (fdchangecnt)
2846 { 3514 {
2847 fd_reify (EV_A); 3515 fd_reify (EV_A);
2848 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3516 ev_run (EV_A_ EVRUN_NOWAIT);
2849 } 3517 }
2850 } 3518 }
2851} 3519}
2852 3520
2853static void 3521static void
2854embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3522embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2855{ 3523{
2856 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3524 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2857 3525
3526 ev_embed_stop (EV_A_ w);
3527
2858 { 3528 {
2859 struct ev_loop *loop = w->other; 3529 EV_P = w->other;
2860 3530
2861 ev_loop_fork (EV_A); 3531 ev_loop_fork (EV_A);
3532 ev_run (EV_A_ EVRUN_NOWAIT);
2862 } 3533 }
3534
3535 ev_embed_start (EV_A_ w);
2863} 3536}
2864 3537
2865#if 0 3538#if 0
2866static void 3539static void
2867embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3540embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2875{ 3548{
2876 if (expect_false (ev_is_active (w))) 3549 if (expect_false (ev_is_active (w)))
2877 return; 3550 return;
2878 3551
2879 { 3552 {
2880 struct ev_loop *loop = w->other; 3553 EV_P = w->other;
2881 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3554 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2882 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3555 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2883 } 3556 }
2884 3557
2885 EV_FREQUENT_CHECK; 3558 EV_FREQUENT_CHECK;
2886 3559
… …
2912 3585
2913 ev_io_stop (EV_A_ &w->io); 3586 ev_io_stop (EV_A_ &w->io);
2914 ev_prepare_stop (EV_A_ &w->prepare); 3587 ev_prepare_stop (EV_A_ &w->prepare);
2915 ev_fork_stop (EV_A_ &w->fork); 3588 ev_fork_stop (EV_A_ &w->fork);
2916 3589
3590 ev_stop (EV_A_ (W)w);
3591
2917 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2918} 3593}
2919#endif 3594#endif
2920 3595
2921#if EV_FORK_ENABLE 3596#if EV_FORK_ENABLE
… …
2954 3629
2955 EV_FREQUENT_CHECK; 3630 EV_FREQUENT_CHECK;
2956} 3631}
2957#endif 3632#endif
2958 3633
2959#if EV_ASYNC_ENABLE 3634#if EV_CLEANUP_ENABLE
2960void 3635void
2961ev_async_start (EV_P_ ev_async *w) 3636ev_cleanup_start (EV_P_ ev_cleanup *w)
2962{ 3637{
2963 if (expect_false (ev_is_active (w))) 3638 if (expect_false (ev_is_active (w)))
2964 return; 3639 return;
3640
3641 EV_FREQUENT_CHECK;
3642
3643 ev_start (EV_A_ (W)w, ++cleanupcnt);
3644 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3645 cleanups [cleanupcnt - 1] = w;
3646
3647 /* cleanup watchers should never keep a refcount on the loop */
3648 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK;
3650}
3651
3652void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w)
3654{
3655 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w)))
3657 return;
3658
3659 EV_FREQUENT_CHECK;
3660 ev_ref (EV_A);
3661
3662 {
3663 int active = ev_active (w);
3664
3665 cleanups [active - 1] = cleanups [--cleanupcnt];
3666 ev_active (cleanups [active - 1]) = active;
3667 }
3668
3669 ev_stop (EV_A_ (W)w);
3670
3671 EV_FREQUENT_CHECK;
3672}
3673#endif
3674
3675#if EV_ASYNC_ENABLE
3676void
3677ev_async_start (EV_P_ ev_async *w)
3678{
3679 if (expect_false (ev_is_active (w)))
3680 return;
3681
3682 w->sent = 0;
2965 3683
2966 evpipe_init (EV_A); 3684 evpipe_init (EV_A);
2967 3685
2968 EV_FREQUENT_CHECK; 3686 EV_FREQUENT_CHECK;
2969 3687
… …
2997 3715
2998void 3716void
2999ev_async_send (EV_P_ ev_async *w) 3717ev_async_send (EV_P_ ev_async *w)
3000{ 3718{
3001 w->sent = 1; 3719 w->sent = 1;
3002 evpipe_write (EV_A_ &gotasync); 3720 evpipe_write (EV_A_ &async_pending);
3003} 3721}
3004#endif 3722#endif
3005 3723
3006/*****************************************************************************/ 3724/*****************************************************************************/
3007 3725
… …
3047{ 3765{
3048 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3766 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3049 3767
3050 if (expect_false (!once)) 3768 if (expect_false (!once))
3051 { 3769 {
3052 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3770 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3053 return; 3771 return;
3054 } 3772 }
3055 3773
3056 once->cb = cb; 3774 once->cb = cb;
3057 once->arg = arg; 3775 once->arg = arg;
… …
3069 ev_timer_set (&once->to, timeout, 0.); 3787 ev_timer_set (&once->to, timeout, 0.);
3070 ev_timer_start (EV_A_ &once->to); 3788 ev_timer_start (EV_A_ &once->to);
3071 } 3789 }
3072} 3790}
3073 3791
3792/*****************************************************************************/
3793
3794#if EV_WALK_ENABLE
3795void
3796ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3797{
3798 int i, j;
3799 ev_watcher_list *wl, *wn;
3800
3801 if (types & (EV_IO | EV_EMBED))
3802 for (i = 0; i < anfdmax; ++i)
3803 for (wl = anfds [i].head; wl; )
3804 {
3805 wn = wl->next;
3806
3807#if EV_EMBED_ENABLE
3808 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3809 {
3810 if (types & EV_EMBED)
3811 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3812 }
3813 else
3814#endif
3815#if EV_USE_INOTIFY
3816 if (ev_cb ((ev_io *)wl) == infy_cb)
3817 ;
3818 else
3819#endif
3820 if ((ev_io *)wl != &pipe_w)
3821 if (types & EV_IO)
3822 cb (EV_A_ EV_IO, wl);
3823
3824 wl = wn;
3825 }
3826
3827 if (types & (EV_TIMER | EV_STAT))
3828 for (i = timercnt + HEAP0; i-- > HEAP0; )
3829#if EV_STAT_ENABLE
3830 /*TODO: timer is not always active*/
3831 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3832 {
3833 if (types & EV_STAT)
3834 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3835 }
3836 else
3837#endif
3838 if (types & EV_TIMER)
3839 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3840
3841#if EV_PERIODIC_ENABLE
3842 if (types & EV_PERIODIC)
3843 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3844 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3845#endif
3846
3847#if EV_IDLE_ENABLE
3848 if (types & EV_IDLE)
3849 for (j = NUMPRI; i--; )
3850 for (i = idlecnt [j]; i--; )
3851 cb (EV_A_ EV_IDLE, idles [j][i]);
3852#endif
3853
3854#if EV_FORK_ENABLE
3855 if (types & EV_FORK)
3856 for (i = forkcnt; i--; )
3857 if (ev_cb (forks [i]) != embed_fork_cb)
3858 cb (EV_A_ EV_FORK, forks [i]);
3859#endif
3860
3861#if EV_ASYNC_ENABLE
3862 if (types & EV_ASYNC)
3863 for (i = asynccnt; i--; )
3864 cb (EV_A_ EV_ASYNC, asyncs [i]);
3865#endif
3866
3867#if EV_PREPARE_ENABLE
3868 if (types & EV_PREPARE)
3869 for (i = preparecnt; i--; )
3870# if EV_EMBED_ENABLE
3871 if (ev_cb (prepares [i]) != embed_prepare_cb)
3872# endif
3873 cb (EV_A_ EV_PREPARE, prepares [i]);
3874#endif
3875
3876#if EV_CHECK_ENABLE
3877 if (types & EV_CHECK)
3878 for (i = checkcnt; i--; )
3879 cb (EV_A_ EV_CHECK, checks [i]);
3880#endif
3881
3882#if EV_SIGNAL_ENABLE
3883 if (types & EV_SIGNAL)
3884 for (i = 0; i < EV_NSIG - 1; ++i)
3885 for (wl = signals [i].head; wl; )
3886 {
3887 wn = wl->next;
3888 cb (EV_A_ EV_SIGNAL, wl);
3889 wl = wn;
3890 }
3891#endif
3892
3893#if EV_CHILD_ENABLE
3894 if (types & EV_CHILD)
3895 for (i = (EV_PID_HASHSIZE); i--; )
3896 for (wl = childs [i]; wl; )
3897 {
3898 wn = wl->next;
3899 cb (EV_A_ EV_CHILD, wl);
3900 wl = wn;
3901 }
3902#endif
3903/* EV_STAT 0x00001000 /* stat data changed */
3904/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3905}
3906#endif
3907
3074#if EV_MULTIPLICITY 3908#if EV_MULTIPLICITY
3075 #include "ev_wrap.h" 3909 #include "ev_wrap.h"
3076#endif 3910#endif
3077 3911
3078#ifdef __cplusplus 3912EV_CPP(})
3079}
3080#endif
3081 3913

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