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Comparing libev/ev.c (file contents):
Revision 1.262 by root, Wed Oct 1 04:25:25 2008 UTC vs.
Revision 1.354 by root, Fri Oct 22 09:24:11 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
130# endif 157# endif
131 158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
… …
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
… …
286# include <sys/select.h> 382# include <sys/select.h>
287# endif 383# endif
288#endif 384#endif
289 385
290#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/utsname.h>
388# include <sys/statfs.h>
291# include <sys/inotify.h> 389# include <sys/inotify.h>
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0
394# endif
292#endif 395#endif
293 396
294#if EV_SELECT_IS_WINSOCKET 397#if EV_SELECT_IS_WINSOCKET
295# include <winsock.h> 398# include <winsock.h>
296#endif 399#endif
297 400
298#if EV_USE_EVENTFD 401#if EV_USE_EVENTFD
299/* 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 */
300# include <stdint.h> 403# include <stdint.h>
301# ifdef __cplusplus 404# ifndef EFD_NONBLOCK
302extern "C" { 405# define EFD_NONBLOCK O_NONBLOCK
303# endif 406# endif
304int eventfd (unsigned int initval, int flags); 407# ifndef EFD_CLOEXEC
305# ifdef __cplusplus 408# ifdef O_CLOEXEC
306} 409# define EFD_CLOEXEC O_CLOEXEC
410# else
411# define EFD_CLOEXEC 02000000
412# endif
307# 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};
308#endif 437#endif
309 438
310/**/ 439/**/
311 440
312#if EV_VERIFY >= 3 441#if EV_VERIFY >= 3
313# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 442# define EV_FREQUENT_CHECK ev_verify (EV_A)
314#else 443#else
315# define EV_FREQUENT_CHECK do { } while (0) 444# define EV_FREQUENT_CHECK do { } while (0)
316#endif 445#endif
317 446
318/* 447/*
… …
325 */ 454 */
326#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
327 456
328#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) */
329#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) */
330/*#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)
331 462
332#if __GNUC__ >= 4 463#if __GNUC__ >= 4
333# define expect(expr,value) __builtin_expect ((expr),(value)) 464# define expect(expr,value) __builtin_expect ((expr),(value))
334# define noinline __attribute__ ((noinline)) 465# define noinline __attribute__ ((noinline))
335#else 466#else
… …
342 473
343#define expect_false(expr) expect ((expr) != 0, 0) 474#define expect_false(expr) expect ((expr) != 0, 0)
344#define expect_true(expr) expect ((expr) != 0, 1) 475#define expect_true(expr) expect ((expr) != 0, 1)
345#define inline_size static inline 476#define inline_size static inline
346 477
347#if EV_MINIMAL 478#if EV_FEATURE_CODE
479# define inline_speed static inline
480#else
348# 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)
349#else 488#else
350# define inline_speed static inline
351#endif
352
353#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
354#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif
355 491
356#define EMPTY /* required for microsofts broken pseudo-c compiler */ 492#define EMPTY /* required for microsofts broken pseudo-c compiler */
357#define EMPTY2(a,b) /* used to suppress some warnings */ 493#define EMPTY2(a,b) /* used to suppress some warnings */
358 494
359typedef ev_watcher *W; 495typedef ev_watcher *W;
… …
361typedef ev_watcher_time *WT; 497typedef ev_watcher_time *WT;
362 498
363#define ev_active(w) ((W)(w))->active 499#define ev_active(w) ((W)(w))->active
364#define ev_at(w) ((WT)(w))->at 500#define ev_at(w) ((WT)(w))->at
365 501
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
366#if EV_USE_MONOTONIC 508#if EV_USE_MONOTONIC
367/* sig_atomic_t is used to avoid per-thread variables or locking but still */
368/* giving it a reasonably high chance of working on typical architetcures */
369static 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)
370#endif 520#endif
371 521
372#ifdef _WIN32 522#ifdef _WIN32
373# include "ev_win32.c" 523# include "ev_win32.c"
374#endif 524#endif
375 525
376/*****************************************************************************/ 526/*****************************************************************************/
377 527
528#if EV_AVOID_STDIO
529static void noinline
530ev_printerr (const char *msg)
531{
532 write (STDERR_FILENO, msg, strlen (msg));
533}
534#endif
535
378static void (*syserr_cb)(const char *msg); 536static void (*syserr_cb)(const char *msg);
379 537
380void 538void
381ev_set_syserr_cb (void (*cb)(const char *msg)) 539ev_set_syserr_cb (void (*cb)(const char *msg))
382{ 540{
383 syserr_cb = cb; 541 syserr_cb = cb;
384} 542}
385 543
386static void noinline 544static void noinline
387syserr (const char *msg) 545ev_syserr (const char *msg)
388{ 546{
389 if (!msg) 547 if (!msg)
390 msg = "(libev) system error"; 548 msg = "(libev) system error";
391 549
392 if (syserr_cb) 550 if (syserr_cb)
393 syserr_cb (msg); 551 syserr_cb (msg);
394 else 552 else
395 { 553 {
554#if EV_AVOID_STDIO
555 const char *err = strerror (errno);
556
557 ev_printerr (msg);
558 ev_printerr (": ");
559 ev_printerr (err);
560 ev_printerr ("\n");
561#else
396 perror (msg); 562 perror (msg);
563#endif
397 abort (); 564 abort ();
398 } 565 }
399} 566}
400 567
401static void * 568static void *
402ev_realloc_emul (void *ptr, long size) 569ev_realloc_emul (void *ptr, long size)
403{ 570{
571#if __GLIBC__
572 return realloc (ptr, size);
573#else
404 /* some systems, notably openbsd and darwin, fail to properly 574 /* some systems, notably openbsd and darwin, fail to properly
405 * implement realloc (x, 0) (as required by both ansi c-98 and 575 * implement realloc (x, 0) (as required by both ansi c-89 and
406 * the single unix specification, so work around them here. 576 * the single unix specification, so work around them here.
407 */ 577 */
408 578
409 if (size) 579 if (size)
410 return realloc (ptr, size); 580 return realloc (ptr, size);
411 581
412 free (ptr); 582 free (ptr);
413 return 0; 583 return 0;
584#endif
414} 585}
415 586
416static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 587static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
417 588
418void 589void
… …
426{ 597{
427 ptr = alloc (ptr, size); 598 ptr = alloc (ptr, size);
428 599
429 if (!ptr && size) 600 if (!ptr && size)
430 { 601 {
602#if EV_AVOID_STDIO
603 ev_printerr ("libev: memory allocation failed, aborting.\n");
604#else
431 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 605 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
606#endif
432 abort (); 607 abort ();
433 } 608 }
434 609
435 return ptr; 610 return ptr;
436} 611}
… …
438#define ev_malloc(size) ev_realloc (0, (size)) 613#define ev_malloc(size) ev_realloc (0, (size))
439#define ev_free(ptr) ev_realloc ((ptr), 0) 614#define ev_free(ptr) ev_realloc ((ptr), 0)
440 615
441/*****************************************************************************/ 616/*****************************************************************************/
442 617
618/* set in reify when reification needed */
619#define EV_ANFD_REIFY 1
620
621/* file descriptor info structure */
443typedef struct 622typedef struct
444{ 623{
445 WL head; 624 WL head;
446 unsigned char events; 625 unsigned char events; /* the events watched for */
626 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
627 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
447 unsigned char reify; 628 unsigned char unused;
629#if EV_USE_EPOLL
630 unsigned int egen; /* generation counter to counter epoll bugs */
631#endif
448#if EV_SELECT_IS_WINSOCKET 632#if EV_SELECT_IS_WINSOCKET
449 SOCKET handle; 633 SOCKET handle;
450#endif 634#endif
451} ANFD; 635} ANFD;
452 636
637/* stores the pending event set for a given watcher */
453typedef struct 638typedef struct
454{ 639{
455 W w; 640 W w;
456 int events; 641 int events; /* the pending event set for the given watcher */
457} ANPENDING; 642} ANPENDING;
458 643
459#if EV_USE_INOTIFY 644#if EV_USE_INOTIFY
460/* hash table entry per inotify-id */ 645/* hash table entry per inotify-id */
461typedef struct 646typedef struct
… …
464} ANFS; 649} ANFS;
465#endif 650#endif
466 651
467/* Heap Entry */ 652/* Heap Entry */
468#if EV_HEAP_CACHE_AT 653#if EV_HEAP_CACHE_AT
654 /* a heap element */
469 typedef struct { 655 typedef struct {
470 ev_tstamp at; 656 ev_tstamp at;
471 WT w; 657 WT w;
472 } ANHE; 658 } ANHE;
473 659
474 #define ANHE_w(he) (he).w /* access watcher, read-write */ 660 #define ANHE_w(he) (he).w /* access watcher, read-write */
475 #define ANHE_at(he) (he).at /* access cached at, read-only */ 661 #define ANHE_at(he) (he).at /* access cached at, read-only */
476 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 662 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
477#else 663#else
664 /* a heap element */
478 typedef WT ANHE; 665 typedef WT ANHE;
479 666
480 #define ANHE_w(he) (he) 667 #define ANHE_w(he) (he)
481 #define ANHE_at(he) (he)->at 668 #define ANHE_at(he) (he)->at
482 #define ANHE_at_cache(he) 669 #define ANHE_at_cache(he)
… …
506 693
507 static int ev_default_loop_ptr; 694 static int ev_default_loop_ptr;
508 695
509#endif 696#endif
510 697
698#if EV_FEATURE_API
699# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
700# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
701# define EV_INVOKE_PENDING invoke_cb (EV_A)
702#else
703# define EV_RELEASE_CB (void)0
704# define EV_ACQUIRE_CB (void)0
705# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
706#endif
707
708#define EVBREAK_RECURSE 0x80
709
511/*****************************************************************************/ 710/*****************************************************************************/
512 711
712#ifndef EV_HAVE_EV_TIME
513ev_tstamp 713ev_tstamp
514ev_time (void) 714ev_time (void)
515{ 715{
516#if EV_USE_REALTIME 716#if EV_USE_REALTIME
717 if (expect_true (have_realtime))
718 {
517 struct timespec ts; 719 struct timespec ts;
518 clock_gettime (CLOCK_REALTIME, &ts); 720 clock_gettime (CLOCK_REALTIME, &ts);
519 return ts.tv_sec + ts.tv_nsec * 1e-9; 721 return ts.tv_sec + ts.tv_nsec * 1e-9;
520#else 722 }
723#endif
724
521 struct timeval tv; 725 struct timeval tv;
522 gettimeofday (&tv, 0); 726 gettimeofday (&tv, 0);
523 return tv.tv_sec + tv.tv_usec * 1e-6; 727 return tv.tv_sec + tv.tv_usec * 1e-6;
524#endif
525} 728}
729#endif
526 730
527ev_tstamp inline_size 731inline_size ev_tstamp
528get_clock (void) 732get_clock (void)
529{ 733{
530#if EV_USE_MONOTONIC 734#if EV_USE_MONOTONIC
531 if (expect_true (have_monotonic)) 735 if (expect_true (have_monotonic))
532 { 736 {
… …
553 if (delay > 0.) 757 if (delay > 0.)
554 { 758 {
555#if EV_USE_NANOSLEEP 759#if EV_USE_NANOSLEEP
556 struct timespec ts; 760 struct timespec ts;
557 761
558 ts.tv_sec = (time_t)delay; 762 EV_TS_SET (ts, delay);
559 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
560
561 nanosleep (&ts, 0); 763 nanosleep (&ts, 0);
562#elif defined(_WIN32) 764#elif defined(_WIN32)
563 Sleep ((unsigned long)(delay * 1e3)); 765 Sleep ((unsigned long)(delay * 1e3));
564#else 766#else
565 struct timeval tv; 767 struct timeval tv;
566 768
567 tv.tv_sec = (time_t)delay;
568 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
569
570 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
571 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 770 /* something not guaranteed by newer posix versions, but guaranteed */
572 /* by older ones */ 771 /* by older ones */
772 EV_TV_SET (tv, delay);
573 select (0, 0, 0, 0, &tv); 773 select (0, 0, 0, 0, &tv);
574#endif 774#endif
575 } 775 }
576} 776}
577 777
578/*****************************************************************************/ 778/*****************************************************************************/
579 779
580#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 780#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
581 781
582int inline_size 782/* find a suitable new size for the given array, */
783/* hopefully by rounding to a nice-to-malloc size */
784inline_size int
583array_nextsize (int elem, int cur, int cnt) 785array_nextsize (int elem, int cur, int cnt)
584{ 786{
585 int ncur = cur + 1; 787 int ncur = cur + 1;
586 788
587 do 789 do
… …
604array_realloc (int elem, void *base, int *cur, int cnt) 806array_realloc (int elem, void *base, int *cur, int cnt)
605{ 807{
606 *cur = array_nextsize (elem, *cur, cnt); 808 *cur = array_nextsize (elem, *cur, cnt);
607 return ev_realloc (base, elem * *cur); 809 return ev_realloc (base, elem * *cur);
608} 810}
811
812#define array_init_zero(base,count) \
813 memset ((void *)(base), 0, sizeof (*(base)) * (count))
609 814
610#define array_needsize(type,base,cur,cnt,init) \ 815#define array_needsize(type,base,cur,cnt,init) \
611 if (expect_false ((cnt) > (cur))) \ 816 if (expect_false ((cnt) > (cur))) \
612 { \ 817 { \
613 int ocur_ = (cur); \ 818 int ocur_ = (cur); \
… …
625 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 830 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626 } 831 }
627#endif 832#endif
628 833
629#define array_free(stem, idx) \ 834#define array_free(stem, idx) \
630 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 835 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
631 836
632/*****************************************************************************/ 837/*****************************************************************************/
838
839/* dummy callback for pending events */
840static void noinline
841pendingcb (EV_P_ ev_prepare *w, int revents)
842{
843}
633 844
634void noinline 845void noinline
635ev_feed_event (EV_P_ void *w, int revents) 846ev_feed_event (EV_P_ void *w, int revents)
636{ 847{
637 W w_ = (W)w; 848 W w_ = (W)w;
… …
646 pendings [pri][w_->pending - 1].w = w_; 857 pendings [pri][w_->pending - 1].w = w_;
647 pendings [pri][w_->pending - 1].events = revents; 858 pendings [pri][w_->pending - 1].events = revents;
648 } 859 }
649} 860}
650 861
651void inline_speed 862inline_speed void
863feed_reverse (EV_P_ W w)
864{
865 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
866 rfeeds [rfeedcnt++] = w;
867}
868
869inline_size void
870feed_reverse_done (EV_P_ int revents)
871{
872 do
873 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
874 while (rfeedcnt);
875}
876
877inline_speed void
652queue_events (EV_P_ W *events, int eventcnt, int type) 878queue_events (EV_P_ W *events, int eventcnt, int type)
653{ 879{
654 int i; 880 int i;
655 881
656 for (i = 0; i < eventcnt; ++i) 882 for (i = 0; i < eventcnt; ++i)
657 ev_feed_event (EV_A_ events [i], type); 883 ev_feed_event (EV_A_ events [i], type);
658} 884}
659 885
660/*****************************************************************************/ 886/*****************************************************************************/
661 887
662void inline_size 888inline_speed void
663anfds_init (ANFD *base, int count)
664{
665 while (count--)
666 {
667 base->head = 0;
668 base->events = EV_NONE;
669 base->reify = 0;
670
671 ++base;
672 }
673}
674
675void inline_speed
676fd_event (EV_P_ int fd, int revents) 889fd_event_nocheck (EV_P_ int fd, int revents)
677{ 890{
678 ANFD *anfd = anfds + fd; 891 ANFD *anfd = anfds + fd;
679 ev_io *w; 892 ev_io *w;
680 893
681 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 894 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
685 if (ev) 898 if (ev)
686 ev_feed_event (EV_A_ (W)w, ev); 899 ev_feed_event (EV_A_ (W)w, ev);
687 } 900 }
688} 901}
689 902
903/* do not submit kernel events for fds that have reify set */
904/* because that means they changed while we were polling for new events */
905inline_speed void
906fd_event (EV_P_ int fd, int revents)
907{
908 ANFD *anfd = anfds + fd;
909
910 if (expect_true (!anfd->reify))
911 fd_event_nocheck (EV_A_ fd, revents);
912}
913
690void 914void
691ev_feed_fd_event (EV_P_ int fd, int revents) 915ev_feed_fd_event (EV_P_ int fd, int revents)
692{ 916{
693 if (fd >= 0 && fd < anfdmax) 917 if (fd >= 0 && fd < anfdmax)
694 fd_event (EV_A_ fd, revents); 918 fd_event_nocheck (EV_A_ fd, revents);
695} 919}
696 920
697void inline_size 921/* make sure the external fd watch events are in-sync */
922/* with the kernel/libev internal state */
923inline_size void
698fd_reify (EV_P) 924fd_reify (EV_P)
699{ 925{
700 int i; 926 int i;
701 927
702 for (i = 0; i < fdchangecnt; ++i) 928 for (i = 0; i < fdchangecnt; ++i)
703 { 929 {
704 int fd = fdchanges [i]; 930 int fd = fdchanges [i];
705 ANFD *anfd = anfds + fd; 931 ANFD *anfd = anfds + fd;
706 ev_io *w; 932 ev_io *w;
707 933
708 unsigned char events = 0; 934 unsigned char o_events = anfd->events;
935 unsigned char o_reify = anfd->reify;
709 936
710 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 937 anfd->reify = 0;
711 events |= (unsigned char)w->events;
712 938
713#if EV_SELECT_IS_WINSOCKET 939#if EV_SELECT_IS_WINSOCKET
714 if (events) 940 if (o_reify & EV__IOFDSET)
715 { 941 {
716 unsigned long arg; 942 unsigned long arg;
717 #ifdef EV_FD_TO_WIN32_HANDLE
718 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 943 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
719 #else
720 anfd->handle = _get_osfhandle (fd);
721 #endif
722 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 944 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
723 } 945 }
724#endif 946#endif
725 947
948 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
726 { 949 {
727 unsigned char o_events = anfd->events;
728 unsigned char o_reify = anfd->reify;
729
730 anfd->reify = 0;
731 anfd->events = events; 950 anfd->events = 0;
732 951
733 if (o_events != events || o_reify & EV_IOFDSET) 952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
953 anfd->events |= (unsigned char)w->events;
954
955 if (o_events != anfd->events)
956 o_reify = EV__IOFDSET; /* actually |= */
957 }
958
959 if (o_reify & EV__IOFDSET)
734 backend_modify (EV_A_ fd, o_events, events); 960 backend_modify (EV_A_ fd, o_events, anfd->events);
735 }
736 } 961 }
737 962
738 fdchangecnt = 0; 963 fdchangecnt = 0;
739} 964}
740 965
741void inline_size 966/* something about the given fd changed */
967inline_size void
742fd_change (EV_P_ int fd, int flags) 968fd_change (EV_P_ int fd, int flags)
743{ 969{
744 unsigned char reify = anfds [fd].reify; 970 unsigned char reify = anfds [fd].reify;
745 anfds [fd].reify |= flags; 971 anfds [fd].reify |= flags;
746 972
… …
750 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 976 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751 fdchanges [fdchangecnt - 1] = fd; 977 fdchanges [fdchangecnt - 1] = fd;
752 } 978 }
753} 979}
754 980
755void inline_speed 981/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
982inline_speed void
756fd_kill (EV_P_ int fd) 983fd_kill (EV_P_ int fd)
757{ 984{
758 ev_io *w; 985 ev_io *w;
759 986
760 while ((w = (ev_io *)anfds [fd].head)) 987 while ((w = (ev_io *)anfds [fd].head))
… …
762 ev_io_stop (EV_A_ w); 989 ev_io_stop (EV_A_ w);
763 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 990 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
764 } 991 }
765} 992}
766 993
767int inline_size 994/* check whether the given fd is actually valid, for error recovery */
995inline_size int
768fd_valid (int fd) 996fd_valid (int fd)
769{ 997{
770#ifdef _WIN32 998#ifdef _WIN32
771 return _get_osfhandle (fd) != -1; 999 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
772#else 1000#else
773 return fcntl (fd, F_GETFD) != -1; 1001 return fcntl (fd, F_GETFD) != -1;
774#endif 1002#endif
775} 1003}
776 1004
… …
794 1022
795 for (fd = anfdmax; fd--; ) 1023 for (fd = anfdmax; fd--; )
796 if (anfds [fd].events) 1024 if (anfds [fd].events)
797 { 1025 {
798 fd_kill (EV_A_ fd); 1026 fd_kill (EV_A_ fd);
799 return; 1027 break;
800 } 1028 }
801} 1029}
802 1030
803/* usually called after fork if backend needs to re-arm all fds from scratch */ 1031/* usually called after fork if backend needs to re-arm all fds from scratch */
804static void noinline 1032static void noinline
… …
808 1036
809 for (fd = 0; fd < anfdmax; ++fd) 1037 for (fd = 0; fd < anfdmax; ++fd)
810 if (anfds [fd].events) 1038 if (anfds [fd].events)
811 { 1039 {
812 anfds [fd].events = 0; 1040 anfds [fd].events = 0;
1041 anfds [fd].emask = 0;
813 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1042 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
814 } 1043 }
815} 1044}
816 1045
1046/* used to prepare libev internal fd's */
1047/* this is not fork-safe */
1048inline_speed void
1049fd_intern (int fd)
1050{
1051#ifdef _WIN32
1052 unsigned long arg = 1;
1053 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1054#else
1055 fcntl (fd, F_SETFD, FD_CLOEXEC);
1056 fcntl (fd, F_SETFL, O_NONBLOCK);
1057#endif
1058}
1059
817/*****************************************************************************/ 1060/*****************************************************************************/
818 1061
819/* 1062/*
820 * the heap functions want a real array index. array index 0 uis guaranteed to not 1063 * the heap functions want a real array index. array index 0 is guaranteed to not
821 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1064 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
822 * the branching factor of the d-tree. 1065 * the branching factor of the d-tree.
823 */ 1066 */
824 1067
825/* 1068/*
… …
834#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1077#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1078#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836#define UPHEAP_DONE(p,k) ((p) == (k)) 1079#define UPHEAP_DONE(p,k) ((p) == (k))
837 1080
838/* away from the root */ 1081/* away from the root */
839void inline_speed 1082inline_speed void
840downheap (ANHE *heap, int N, int k) 1083downheap (ANHE *heap, int N, int k)
841{ 1084{
842 ANHE he = heap [k]; 1085 ANHE he = heap [k];
843 ANHE *E = heap + N + HEAP0; 1086 ANHE *E = heap + N + HEAP0;
844 1087
… …
884#define HEAP0 1 1127#define HEAP0 1
885#define HPARENT(k) ((k) >> 1) 1128#define HPARENT(k) ((k) >> 1)
886#define UPHEAP_DONE(p,k) (!(p)) 1129#define UPHEAP_DONE(p,k) (!(p))
887 1130
888/* away from the root */ 1131/* away from the root */
889void inline_speed 1132inline_speed void
890downheap (ANHE *heap, int N, int k) 1133downheap (ANHE *heap, int N, int k)
891{ 1134{
892 ANHE he = heap [k]; 1135 ANHE he = heap [k];
893 1136
894 for (;;) 1137 for (;;)
895 { 1138 {
896 int c = k << 1; 1139 int c = k << 1;
897 1140
898 if (c > N + HEAP0 - 1) 1141 if (c >= N + HEAP0)
899 break; 1142 break;
900 1143
901 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1144 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
902 ? 1 : 0; 1145 ? 1 : 0;
903 1146
… …
914 ev_active (ANHE_w (he)) = k; 1157 ev_active (ANHE_w (he)) = k;
915} 1158}
916#endif 1159#endif
917 1160
918/* towards the root */ 1161/* towards the root */
919void inline_speed 1162inline_speed void
920upheap (ANHE *heap, int k) 1163upheap (ANHE *heap, int k)
921{ 1164{
922 ANHE he = heap [k]; 1165 ANHE he = heap [k];
923 1166
924 for (;;) 1167 for (;;)
… …
935 1178
936 heap [k] = he; 1179 heap [k] = he;
937 ev_active (ANHE_w (he)) = k; 1180 ev_active (ANHE_w (he)) = k;
938} 1181}
939 1182
940void inline_size 1183/* move an element suitably so it is in a correct place */
1184inline_size void
941adjustheap (ANHE *heap, int N, int k) 1185adjustheap (ANHE *heap, int N, int k)
942{ 1186{
943 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1187 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
944 upheap (heap, k); 1188 upheap (heap, k);
945 else 1189 else
946 downheap (heap, N, k); 1190 downheap (heap, N, k);
947} 1191}
948 1192
949/* rebuild the heap: this function is used only once and executed rarely */ 1193/* rebuild the heap: this function is used only once and executed rarely */
950void inline_size 1194inline_size void
951reheap (ANHE *heap, int N) 1195reheap (ANHE *heap, int N)
952{ 1196{
953 int i; 1197 int i;
954 1198
955 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1199 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
958 upheap (heap, i + HEAP0); 1202 upheap (heap, i + HEAP0);
959} 1203}
960 1204
961/*****************************************************************************/ 1205/*****************************************************************************/
962 1206
1207/* associate signal watchers to a signal signal */
963typedef struct 1208typedef struct
964{ 1209{
1210 EV_ATOMIC_T pending;
1211#if EV_MULTIPLICITY
1212 EV_P;
1213#endif
965 WL head; 1214 WL head;
966 EV_ATOMIC_T gotsig;
967} ANSIG; 1215} ANSIG;
968 1216
969static ANSIG *signals; 1217static ANSIG signals [EV_NSIG - 1];
970static int signalmax;
971
972static EV_ATOMIC_T gotsig;
973
974void inline_size
975signals_init (ANSIG *base, int count)
976{
977 while (count--)
978 {
979 base->head = 0;
980 base->gotsig = 0;
981
982 ++base;
983 }
984}
985 1218
986/*****************************************************************************/ 1219/*****************************************************************************/
987 1220
988void inline_speed 1221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
989fd_intern (int fd)
990{
991#ifdef _WIN32
992 unsigned long arg = 1;
993 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
994#else
995 fcntl (fd, F_SETFD, FD_CLOEXEC);
996 fcntl (fd, F_SETFL, O_NONBLOCK);
997#endif
998}
999 1222
1000static void noinline 1223static void noinline
1001evpipe_init (EV_P) 1224evpipe_init (EV_P)
1002{ 1225{
1003 if (!ev_is_active (&pipeev)) 1226 if (!ev_is_active (&pipe_w))
1004 { 1227 {
1005#if EV_USE_EVENTFD 1228# if EV_USE_EVENTFD
1229 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1230 if (evfd < 0 && errno == EINVAL)
1006 if ((evfd = eventfd (0, 0)) >= 0) 1231 evfd = eventfd (0, 0);
1232
1233 if (evfd >= 0)
1007 { 1234 {
1008 evpipe [0] = -1; 1235 evpipe [0] = -1;
1009 fd_intern (evfd); 1236 fd_intern (evfd); /* doing it twice doesn't hurt */
1010 ev_io_set (&pipeev, evfd, EV_READ); 1237 ev_io_set (&pipe_w, evfd, EV_READ);
1011 } 1238 }
1012 else 1239 else
1013#endif 1240# endif
1014 { 1241 {
1015 while (pipe (evpipe)) 1242 while (pipe (evpipe))
1016 syserr ("(libev) error creating signal/async pipe"); 1243 ev_syserr ("(libev) error creating signal/async pipe");
1017 1244
1018 fd_intern (evpipe [0]); 1245 fd_intern (evpipe [0]);
1019 fd_intern (evpipe [1]); 1246 fd_intern (evpipe [1]);
1020 ev_io_set (&pipeev, evpipe [0], EV_READ); 1247 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1021 } 1248 }
1022 1249
1023 ev_io_start (EV_A_ &pipeev); 1250 ev_io_start (EV_A_ &pipe_w);
1024 ev_unref (EV_A); /* watcher should not keep loop alive */ 1251 ev_unref (EV_A); /* watcher should not keep loop alive */
1025 } 1252 }
1026} 1253}
1027 1254
1028void inline_size 1255inline_size void
1029evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1256evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030{ 1257{
1031 if (!*flag) 1258 if (!*flag)
1032 { 1259 {
1033 int old_errno = errno; /* save errno because write might clobber it */ 1260 int old_errno = errno; /* save errno because write might clobber it */
1261 char dummy;
1034 1262
1035 *flag = 1; 1263 *flag = 1;
1036 1264
1037#if EV_USE_EVENTFD 1265#if EV_USE_EVENTFD
1038 if (evfd >= 0) 1266 if (evfd >= 0)
… …
1040 uint64_t counter = 1; 1268 uint64_t counter = 1;
1041 write (evfd, &counter, sizeof (uint64_t)); 1269 write (evfd, &counter, sizeof (uint64_t));
1042 } 1270 }
1043 else 1271 else
1044#endif 1272#endif
1273 /* win32 people keep sending patches that change this write() to send() */
1274 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1275 /* so when you think this write should be a send instead, please find out */
1276 /* where your send() is from - it's definitely not the microsoft send, and */
1277 /* tell me. thank you. */
1045 write (evpipe [1], &old_errno, 1); 1278 write (evpipe [1], &dummy, 1);
1046 1279
1047 errno = old_errno; 1280 errno = old_errno;
1048 } 1281 }
1049} 1282}
1050 1283
1284/* called whenever the libev signal pipe */
1285/* got some events (signal, async) */
1051static void 1286static void
1052pipecb (EV_P_ ev_io *iow, int revents) 1287pipecb (EV_P_ ev_io *iow, int revents)
1053{ 1288{
1289 int i;
1290
1054#if EV_USE_EVENTFD 1291#if EV_USE_EVENTFD
1055 if (evfd >= 0) 1292 if (evfd >= 0)
1056 { 1293 {
1057 uint64_t counter; 1294 uint64_t counter;
1058 read (evfd, &counter, sizeof (uint64_t)); 1295 read (evfd, &counter, sizeof (uint64_t));
1059 } 1296 }
1060 else 1297 else
1061#endif 1298#endif
1062 { 1299 {
1063 char dummy; 1300 char dummy;
1301 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1064 read (evpipe [0], &dummy, 1); 1302 read (evpipe [0], &dummy, 1);
1065 } 1303 }
1066 1304
1067 if (gotsig && ev_is_default_loop (EV_A)) 1305 if (sig_pending)
1068 { 1306 {
1069 int signum; 1307 sig_pending = 0;
1070 gotsig = 0;
1071 1308
1072 for (signum = signalmax; signum--; ) 1309 for (i = EV_NSIG - 1; i--; )
1073 if (signals [signum].gotsig) 1310 if (expect_false (signals [i].pending))
1074 ev_feed_signal_event (EV_A_ signum + 1); 1311 ev_feed_signal_event (EV_A_ i + 1);
1075 } 1312 }
1076 1313
1077#if EV_ASYNC_ENABLE 1314#if EV_ASYNC_ENABLE
1078 if (gotasync) 1315 if (async_pending)
1079 { 1316 {
1080 int i; 1317 async_pending = 0;
1081 gotasync = 0;
1082 1318
1083 for (i = asynccnt; i--; ) 1319 for (i = asynccnt; i--; )
1084 if (asyncs [i]->sent) 1320 if (asyncs [i]->sent)
1085 { 1321 {
1086 asyncs [i]->sent = 0; 1322 asyncs [i]->sent = 0;
… …
1094 1330
1095static void 1331static void
1096ev_sighandler (int signum) 1332ev_sighandler (int signum)
1097{ 1333{
1098#if EV_MULTIPLICITY 1334#if EV_MULTIPLICITY
1099 struct ev_loop *loop = &default_loop_struct; 1335 EV_P = signals [signum - 1].loop;
1100#endif 1336#endif
1101 1337
1102#if _WIN32 1338#ifdef _WIN32
1103 signal (signum, ev_sighandler); 1339 signal (signum, ev_sighandler);
1104#endif 1340#endif
1105 1341
1106 signals [signum - 1].gotsig = 1; 1342 signals [signum - 1].pending = 1;
1107 evpipe_write (EV_A_ &gotsig); 1343 evpipe_write (EV_A_ &sig_pending);
1108} 1344}
1109 1345
1110void noinline 1346void noinline
1111ev_feed_signal_event (EV_P_ int signum) 1347ev_feed_signal_event (EV_P_ int signum)
1112{ 1348{
1113 WL w; 1349 WL w;
1114 1350
1351 if (expect_false (signum <= 0 || signum > EV_NSIG))
1352 return;
1353
1354 --signum;
1355
1115#if EV_MULTIPLICITY 1356#if EV_MULTIPLICITY
1116 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1357 /* it is permissible to try to feed a signal to the wrong loop */
1117#endif 1358 /* or, likely more useful, feeding a signal nobody is waiting for */
1118 1359
1119 --signum; 1360 if (expect_false (signals [signum].loop != EV_A))
1120
1121 if (signum < 0 || signum >= signalmax)
1122 return; 1361 return;
1362#endif
1123 1363
1124 signals [signum].gotsig = 0; 1364 signals [signum].pending = 0;
1125 1365
1126 for (w = signals [signum].head; w; w = w->next) 1366 for (w = signals [signum].head; w; w = w->next)
1127 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1367 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1128} 1368}
1129 1369
1370#if EV_USE_SIGNALFD
1371static void
1372sigfdcb (EV_P_ ev_io *iow, int revents)
1373{
1374 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1375
1376 for (;;)
1377 {
1378 ssize_t res = read (sigfd, si, sizeof (si));
1379
1380 /* not ISO-C, as res might be -1, but works with SuS */
1381 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1382 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1383
1384 if (res < (ssize_t)sizeof (si))
1385 break;
1386 }
1387}
1388#endif
1389
1390#endif
1391
1130/*****************************************************************************/ 1392/*****************************************************************************/
1131 1393
1394#if EV_CHILD_ENABLE
1132static WL childs [EV_PID_HASHSIZE]; 1395static WL childs [EV_PID_HASHSIZE];
1133
1134#ifndef _WIN32
1135 1396
1136static ev_signal childev; 1397static ev_signal childev;
1137 1398
1138#ifndef WIFCONTINUED 1399#ifndef WIFCONTINUED
1139# define WIFCONTINUED(status) 0 1400# define WIFCONTINUED(status) 0
1140#endif 1401#endif
1141 1402
1142void inline_speed 1403/* handle a single child status event */
1404inline_speed void
1143child_reap (EV_P_ int chain, int pid, int status) 1405child_reap (EV_P_ int chain, int pid, int status)
1144{ 1406{
1145 ev_child *w; 1407 ev_child *w;
1146 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1408 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147 1409
1148 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1410 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1149 { 1411 {
1150 if ((w->pid == pid || !w->pid) 1412 if ((w->pid == pid || !w->pid)
1151 && (!traced || (w->flags & 1))) 1413 && (!traced || (w->flags & 1)))
1152 { 1414 {
1153 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1415 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1160 1422
1161#ifndef WCONTINUED 1423#ifndef WCONTINUED
1162# define WCONTINUED 0 1424# define WCONTINUED 0
1163#endif 1425#endif
1164 1426
1427/* called on sigchld etc., calls waitpid */
1165static void 1428static void
1166childcb (EV_P_ ev_signal *sw, int revents) 1429childcb (EV_P_ ev_signal *sw, int revents)
1167{ 1430{
1168 int pid, status; 1431 int pid, status;
1169 1432
… …
1177 /* make sure we are called again until all children have been reaped */ 1440 /* make sure we are called again until all children have been reaped */
1178 /* we need to do it this way so that the callback gets called before we continue */ 1441 /* we need to do it this way so that the callback gets called before we continue */
1179 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1442 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1180 1443
1181 child_reap (EV_A_ pid, pid, status); 1444 child_reap (EV_A_ pid, pid, status);
1182 if (EV_PID_HASHSIZE > 1) 1445 if ((EV_PID_HASHSIZE) > 1)
1183 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1446 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1184} 1447}
1185 1448
1186#endif 1449#endif
1187 1450
… …
1250 /* kqueue is borked on everything but netbsd apparently */ 1513 /* kqueue is borked on everything but netbsd apparently */
1251 /* it usually doesn't work correctly on anything but sockets and pipes */ 1514 /* it usually doesn't work correctly on anything but sockets and pipes */
1252 flags &= ~EVBACKEND_KQUEUE; 1515 flags &= ~EVBACKEND_KQUEUE;
1253#endif 1516#endif
1254#ifdef __APPLE__ 1517#ifdef __APPLE__
1255 // flags &= ~EVBACKEND_KQUEUE; for documentation 1518 /* only select works correctly on that "unix-certified" platform */
1256 flags &= ~EVBACKEND_POLL; 1519 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1520 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1521#endif
1522#ifdef __FreeBSD__
1523 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1257#endif 1524#endif
1258 1525
1259 return flags; 1526 return flags;
1260} 1527}
1261 1528
… …
1275ev_backend (EV_P) 1542ev_backend (EV_P)
1276{ 1543{
1277 return backend; 1544 return backend;
1278} 1545}
1279 1546
1547#if EV_FEATURE_API
1280unsigned int 1548unsigned int
1281ev_loop_count (EV_P) 1549ev_iteration (EV_P)
1282{ 1550{
1283 return loop_count; 1551 return loop_count;
1284} 1552}
1285 1553
1554unsigned int
1555ev_depth (EV_P)
1556{
1557 return loop_depth;
1558}
1559
1286void 1560void
1287ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1561ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1288{ 1562{
1289 io_blocktime = interval; 1563 io_blocktime = interval;
1290} 1564}
… …
1293ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1294{ 1568{
1295 timeout_blocktime = interval; 1569 timeout_blocktime = interval;
1296} 1570}
1297 1571
1572void
1573ev_set_userdata (EV_P_ void *data)
1574{
1575 userdata = data;
1576}
1577
1578void *
1579ev_userdata (EV_P)
1580{
1581 return userdata;
1582}
1583
1584void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1585{
1586 invoke_cb = invoke_pending_cb;
1587}
1588
1589void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1590{
1591 release_cb = release;
1592 acquire_cb = acquire;
1593}
1594#endif
1595
1596/* initialise a loop structure, must be zero-initialised */
1298static void noinline 1597static void noinline
1299loop_init (EV_P_ unsigned int flags) 1598loop_init (EV_P_ unsigned int flags)
1300{ 1599{
1301 if (!backend) 1600 if (!backend)
1302 { 1601 {
1602#if EV_USE_REALTIME
1603 if (!have_realtime)
1604 {
1605 struct timespec ts;
1606
1607 if (!clock_gettime (CLOCK_REALTIME, &ts))
1608 have_realtime = 1;
1609 }
1610#endif
1611
1303#if EV_USE_MONOTONIC 1612#if EV_USE_MONOTONIC
1613 if (!have_monotonic)
1304 { 1614 {
1305 struct timespec ts; 1615 struct timespec ts;
1616
1306 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1617 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307 have_monotonic = 1; 1618 have_monotonic = 1;
1308 } 1619 }
1309#endif 1620#endif
1621
1622 /* pid check not overridable via env */
1623#ifndef _WIN32
1624 if (flags & EVFLAG_FORKCHECK)
1625 curpid = getpid ();
1626#endif
1627
1628 if (!(flags & EVFLAG_NOENV)
1629 && !enable_secure ()
1630 && getenv ("LIBEV_FLAGS"))
1631 flags = atoi (getenv ("LIBEV_FLAGS"));
1310 1632
1311 ev_rt_now = ev_time (); 1633 ev_rt_now = ev_time ();
1312 mn_now = get_clock (); 1634 mn_now = get_clock ();
1313 now_floor = mn_now; 1635 now_floor = mn_now;
1314 rtmn_diff = ev_rt_now - mn_now; 1636 rtmn_diff = ev_rt_now - mn_now;
1637#if EV_FEATURE_API
1638 invoke_cb = ev_invoke_pending;
1639#endif
1315 1640
1316 io_blocktime = 0.; 1641 io_blocktime = 0.;
1317 timeout_blocktime = 0.; 1642 timeout_blocktime = 0.;
1318 backend = 0; 1643 backend = 0;
1319 backend_fd = -1; 1644 backend_fd = -1;
1320 gotasync = 0; 1645 sig_pending = 0;
1646#if EV_ASYNC_ENABLE
1647 async_pending = 0;
1648#endif
1321#if EV_USE_INOTIFY 1649#if EV_USE_INOTIFY
1322 fs_fd = -2; 1650 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1323#endif 1651#endif
1324 1652#if EV_USE_SIGNALFD
1325 /* pid check not overridable via env */ 1653 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1326#ifndef _WIN32
1327 if (flags & EVFLAG_FORKCHECK)
1328 curpid = getpid ();
1329#endif 1654#endif
1330
1331 if (!(flags & EVFLAG_NOENV)
1332 && !enable_secure ()
1333 && getenv ("LIBEV_FLAGS"))
1334 flags = atoi (getenv ("LIBEV_FLAGS"));
1335 1655
1336 if (!(flags & 0x0000ffffU)) 1656 if (!(flags & 0x0000ffffU))
1337 flags |= ev_recommended_backends (); 1657 flags |= ev_recommended_backends ();
1338 1658
1339#if EV_USE_PORT 1659#if EV_USE_PORT
… …
1350#endif 1670#endif
1351#if EV_USE_SELECT 1671#if EV_USE_SELECT
1352 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1672 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1353#endif 1673#endif
1354 1674
1675 ev_prepare_init (&pending_w, pendingcb);
1676
1677#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1355 ev_init (&pipeev, pipecb); 1678 ev_init (&pipe_w, pipecb);
1356 ev_set_priority (&pipeev, EV_MAXPRI); 1679 ev_set_priority (&pipe_w, EV_MAXPRI);
1680#endif
1357 } 1681 }
1358} 1682}
1359 1683
1684/* free up a loop structure */
1360static void noinline 1685static void noinline
1361loop_destroy (EV_P) 1686loop_destroy (EV_P)
1362{ 1687{
1363 int i; 1688 int i;
1364 1689
1365 if (ev_is_active (&pipeev)) 1690 if (ev_is_active (&pipe_w))
1366 { 1691 {
1367 ev_ref (EV_A); /* signal watcher */ 1692 /*ev_ref (EV_A);*/
1368 ev_io_stop (EV_A_ &pipeev); 1693 /*ev_io_stop (EV_A_ &pipe_w);*/
1369 1694
1370#if EV_USE_EVENTFD 1695#if EV_USE_EVENTFD
1371 if (evfd >= 0) 1696 if (evfd >= 0)
1372 close (evfd); 1697 close (evfd);
1373#endif 1698#endif
1374 1699
1375 if (evpipe [0] >= 0) 1700 if (evpipe [0] >= 0)
1376 { 1701 {
1377 close (evpipe [0]); 1702 EV_WIN32_CLOSE_FD (evpipe [0]);
1378 close (evpipe [1]); 1703 EV_WIN32_CLOSE_FD (evpipe [1]);
1379 } 1704 }
1380 } 1705 }
1706
1707#if EV_USE_SIGNALFD
1708 if (ev_is_active (&sigfd_w))
1709 close (sigfd);
1710#endif
1381 1711
1382#if EV_USE_INOTIFY 1712#if EV_USE_INOTIFY
1383 if (fs_fd >= 0) 1713 if (fs_fd >= 0)
1384 close (fs_fd); 1714 close (fs_fd);
1385#endif 1715#endif
… …
1409#if EV_IDLE_ENABLE 1739#if EV_IDLE_ENABLE
1410 array_free (idle, [i]); 1740 array_free (idle, [i]);
1411#endif 1741#endif
1412 } 1742 }
1413 1743
1414 ev_free (anfds); anfdmax = 0; 1744 ev_free (anfds); anfds = 0; anfdmax = 0;
1415 1745
1416 /* have to use the microsoft-never-gets-it-right macro */ 1746 /* have to use the microsoft-never-gets-it-right macro */
1747 array_free (rfeed, EMPTY);
1417 array_free (fdchange, EMPTY); 1748 array_free (fdchange, EMPTY);
1418 array_free (timer, EMPTY); 1749 array_free (timer, EMPTY);
1419#if EV_PERIODIC_ENABLE 1750#if EV_PERIODIC_ENABLE
1420 array_free (periodic, EMPTY); 1751 array_free (periodic, EMPTY);
1421#endif 1752#endif
… …
1430 1761
1431 backend = 0; 1762 backend = 0;
1432} 1763}
1433 1764
1434#if EV_USE_INOTIFY 1765#if EV_USE_INOTIFY
1435void inline_size infy_fork (EV_P); 1766inline_size void infy_fork (EV_P);
1436#endif 1767#endif
1437 1768
1438void inline_size 1769inline_size void
1439loop_fork (EV_P) 1770loop_fork (EV_P)
1440{ 1771{
1441#if EV_USE_PORT 1772#if EV_USE_PORT
1442 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1773 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443#endif 1774#endif
… …
1449#endif 1780#endif
1450#if EV_USE_INOTIFY 1781#if EV_USE_INOTIFY
1451 infy_fork (EV_A); 1782 infy_fork (EV_A);
1452#endif 1783#endif
1453 1784
1454 if (ev_is_active (&pipeev)) 1785 if (ev_is_active (&pipe_w))
1455 { 1786 {
1456 /* this "locks" the handlers against writing to the pipe */ 1787 /* this "locks" the handlers against writing to the pipe */
1457 /* while we modify the fd vars */ 1788 /* while we modify the fd vars */
1458 gotsig = 1; 1789 sig_pending = 1;
1459#if EV_ASYNC_ENABLE 1790#if EV_ASYNC_ENABLE
1460 gotasync = 1; 1791 async_pending = 1;
1461#endif 1792#endif
1462 1793
1463 ev_ref (EV_A); 1794 ev_ref (EV_A);
1464 ev_io_stop (EV_A_ &pipeev); 1795 ev_io_stop (EV_A_ &pipe_w);
1465 1796
1466#if EV_USE_EVENTFD 1797#if EV_USE_EVENTFD
1467 if (evfd >= 0) 1798 if (evfd >= 0)
1468 close (evfd); 1799 close (evfd);
1469#endif 1800#endif
1470 1801
1471 if (evpipe [0] >= 0) 1802 if (evpipe [0] >= 0)
1472 { 1803 {
1473 close (evpipe [0]); 1804 EV_WIN32_CLOSE_FD (evpipe [0]);
1474 close (evpipe [1]); 1805 EV_WIN32_CLOSE_FD (evpipe [1]);
1475 } 1806 }
1476 1807
1808#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1477 evpipe_init (EV_A); 1809 evpipe_init (EV_A);
1478 /* now iterate over everything, in case we missed something */ 1810 /* now iterate over everything, in case we missed something */
1479 pipecb (EV_A_ &pipeev, EV_READ); 1811 pipecb (EV_A_ &pipe_w, EV_READ);
1812#endif
1480 } 1813 }
1481 1814
1482 postfork = 0; 1815 postfork = 0;
1483} 1816}
1484 1817
1485#if EV_MULTIPLICITY 1818#if EV_MULTIPLICITY
1486 1819
1487struct ev_loop * 1820struct ev_loop *
1488ev_loop_new (unsigned int flags) 1821ev_loop_new (unsigned int flags)
1489{ 1822{
1490 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1823 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1491 1824
1492 memset (loop, 0, sizeof (struct ev_loop)); 1825 memset (EV_A, 0, sizeof (struct ev_loop));
1493
1494 loop_init (EV_A_ flags); 1826 loop_init (EV_A_ flags);
1495 1827
1496 if (ev_backend (EV_A)) 1828 if (ev_backend (EV_A))
1497 return loop; 1829 return EV_A;
1498 1830
1499 return 0; 1831 return 0;
1500} 1832}
1501 1833
1502void 1834void
… …
1509void 1841void
1510ev_loop_fork (EV_P) 1842ev_loop_fork (EV_P)
1511{ 1843{
1512 postfork = 1; /* must be in line with ev_default_fork */ 1844 postfork = 1; /* must be in line with ev_default_fork */
1513} 1845}
1846#endif /* multiplicity */
1514 1847
1515#if EV_VERIFY 1848#if EV_VERIFY
1516static void noinline 1849static void noinline
1517verify_watcher (EV_P_ W w) 1850verify_watcher (EV_P_ W w)
1518{ 1851{
1519 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1852 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520 1853
1521 if (w->pending) 1854 if (w->pending)
1522 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1855 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1523} 1856}
1524 1857
1525static void noinline 1858static void noinline
1526verify_heap (EV_P_ ANHE *heap, int N) 1859verify_heap (EV_P_ ANHE *heap, int N)
1527{ 1860{
1528 int i; 1861 int i;
1529 1862
1530 for (i = HEAP0; i < N + HEAP0; ++i) 1863 for (i = HEAP0; i < N + HEAP0; ++i)
1531 { 1864 {
1532 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1865 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1533 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1866 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1534 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1867 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1535 1868
1536 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1869 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537 } 1870 }
1538} 1871}
1539 1872
1540static void noinline 1873static void noinline
1541array_verify (EV_P_ W *ws, int cnt) 1874array_verify (EV_P_ W *ws, int cnt)
1542{ 1875{
1543 while (cnt--) 1876 while (cnt--)
1544 { 1877 {
1545 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1878 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546 verify_watcher (EV_A_ ws [cnt]); 1879 verify_watcher (EV_A_ ws [cnt]);
1547 } 1880 }
1548} 1881}
1549#endif 1882#endif
1550 1883
1884#if EV_FEATURE_API
1551void 1885void
1552ev_loop_verify (EV_P) 1886ev_verify (EV_P)
1553{ 1887{
1554#if EV_VERIFY 1888#if EV_VERIFY
1555 int i; 1889 int i;
1556 WL w; 1890 WL w;
1557 1891
1558 assert (activecnt >= -1); 1892 assert (activecnt >= -1);
1559 1893
1560 assert (fdchangemax >= fdchangecnt); 1894 assert (fdchangemax >= fdchangecnt);
1561 for (i = 0; i < fdchangecnt; ++i) 1895 for (i = 0; i < fdchangecnt; ++i)
1562 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1896 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563 1897
1564 assert (anfdmax >= 0); 1898 assert (anfdmax >= 0);
1565 for (i = 0; i < anfdmax; ++i) 1899 for (i = 0; i < anfdmax; ++i)
1566 for (w = anfds [i].head; w; w = w->next) 1900 for (w = anfds [i].head; w; w = w->next)
1567 { 1901 {
1568 verify_watcher (EV_A_ (W)w); 1902 verify_watcher (EV_A_ (W)w);
1569 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1903 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1570 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1904 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1571 } 1905 }
1572 1906
1573 assert (timermax >= timercnt); 1907 assert (timermax >= timercnt);
1574 verify_heap (EV_A_ timers, timercnt); 1908 verify_heap (EV_A_ timers, timercnt);
1575 1909
… …
1596#if EV_ASYNC_ENABLE 1930#if EV_ASYNC_ENABLE
1597 assert (asyncmax >= asynccnt); 1931 assert (asyncmax >= asynccnt);
1598 array_verify (EV_A_ (W *)asyncs, asynccnt); 1932 array_verify (EV_A_ (W *)asyncs, asynccnt);
1599#endif 1933#endif
1600 1934
1935#if EV_PREPARE_ENABLE
1601 assert (preparemax >= preparecnt); 1936 assert (preparemax >= preparecnt);
1602 array_verify (EV_A_ (W *)prepares, preparecnt); 1937 array_verify (EV_A_ (W *)prepares, preparecnt);
1938#endif
1603 1939
1940#if EV_CHECK_ENABLE
1604 assert (checkmax >= checkcnt); 1941 assert (checkmax >= checkcnt);
1605 array_verify (EV_A_ (W *)checks, checkcnt); 1942 array_verify (EV_A_ (W *)checks, checkcnt);
1943#endif
1606 1944
1607# if 0 1945# if 0
1946#if EV_CHILD_ENABLE
1608 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1947 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1609 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1948 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1949#endif
1610# endif 1950# endif
1611#endif 1951#endif
1612} 1952}
1613 1953#endif
1614#endif /* multiplicity */
1615 1954
1616#if EV_MULTIPLICITY 1955#if EV_MULTIPLICITY
1617struct ev_loop * 1956struct ev_loop *
1618ev_default_loop_init (unsigned int flags) 1957ev_default_loop_init (unsigned int flags)
1619#else 1958#else
… …
1622#endif 1961#endif
1623{ 1962{
1624 if (!ev_default_loop_ptr) 1963 if (!ev_default_loop_ptr)
1625 { 1964 {
1626#if EV_MULTIPLICITY 1965#if EV_MULTIPLICITY
1627 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1966 EV_P = ev_default_loop_ptr = &default_loop_struct;
1628#else 1967#else
1629 ev_default_loop_ptr = 1; 1968 ev_default_loop_ptr = 1;
1630#endif 1969#endif
1631 1970
1632 loop_init (EV_A_ flags); 1971 loop_init (EV_A_ flags);
1633 1972
1634 if (ev_backend (EV_A)) 1973 if (ev_backend (EV_A))
1635 { 1974 {
1636#ifndef _WIN32 1975#if EV_CHILD_ENABLE
1637 ev_signal_init (&childev, childcb, SIGCHLD); 1976 ev_signal_init (&childev, childcb, SIGCHLD);
1638 ev_set_priority (&childev, EV_MAXPRI); 1977 ev_set_priority (&childev, EV_MAXPRI);
1639 ev_signal_start (EV_A_ &childev); 1978 ev_signal_start (EV_A_ &childev);
1640 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1979 ev_unref (EV_A); /* child watcher should not keep loop alive */
1641#endif 1980#endif
… …
1649 1988
1650void 1989void
1651ev_default_destroy (void) 1990ev_default_destroy (void)
1652{ 1991{
1653#if EV_MULTIPLICITY 1992#if EV_MULTIPLICITY
1654 struct ev_loop *loop = ev_default_loop_ptr; 1993 EV_P = ev_default_loop_ptr;
1655#endif 1994#endif
1656 1995
1657#ifndef _WIN32 1996 ev_default_loop_ptr = 0;
1997
1998#if EV_CHILD_ENABLE
1658 ev_ref (EV_A); /* child watcher */ 1999 ev_ref (EV_A); /* child watcher */
1659 ev_signal_stop (EV_A_ &childev); 2000 ev_signal_stop (EV_A_ &childev);
1660#endif 2001#endif
1661 2002
1662 loop_destroy (EV_A); 2003 loop_destroy (EV_A);
… …
1664 2005
1665void 2006void
1666ev_default_fork (void) 2007ev_default_fork (void)
1667{ 2008{
1668#if EV_MULTIPLICITY 2009#if EV_MULTIPLICITY
1669 struct ev_loop *loop = ev_default_loop_ptr; 2010 EV_P = ev_default_loop_ptr;
1670#endif 2011#endif
1671 2012
1672 if (backend)
1673 postfork = 1; /* must be in line with ev_loop_fork */ 2013 postfork = 1; /* must be in line with ev_loop_fork */
1674} 2014}
1675 2015
1676/*****************************************************************************/ 2016/*****************************************************************************/
1677 2017
1678void 2018void
1679ev_invoke (EV_P_ void *w, int revents) 2019ev_invoke (EV_P_ void *w, int revents)
1680{ 2020{
1681 EV_CB_INVOKE ((W)w, revents); 2021 EV_CB_INVOKE ((W)w, revents);
1682} 2022}
1683 2023
1684void inline_speed 2024unsigned int
1685call_pending (EV_P) 2025ev_pending_count (EV_P)
2026{
2027 int pri;
2028 unsigned int count = 0;
2029
2030 for (pri = NUMPRI; pri--; )
2031 count += pendingcnt [pri];
2032
2033 return count;
2034}
2035
2036void noinline
2037ev_invoke_pending (EV_P)
1686{ 2038{
1687 int pri; 2039 int pri;
1688 2040
1689 for (pri = NUMPRI; pri--; ) 2041 for (pri = NUMPRI; pri--; )
1690 while (pendingcnt [pri]) 2042 while (pendingcnt [pri])
1691 { 2043 {
1692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2044 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693 2045
1694 if (expect_true (p->w))
1695 {
1696 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2046 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2047 /* ^ this is no longer true, as pending_w could be here */
1697 2048
1698 p->w->pending = 0; 2049 p->w->pending = 0;
1699 EV_CB_INVOKE (p->w, p->events); 2050 EV_CB_INVOKE (p->w, p->events);
1700 EV_FREQUENT_CHECK; 2051 EV_FREQUENT_CHECK;
1701 }
1702 } 2052 }
1703} 2053}
1704 2054
1705#if EV_IDLE_ENABLE 2055#if EV_IDLE_ENABLE
1706void inline_size 2056/* make idle watchers pending. this handles the "call-idle */
2057/* only when higher priorities are idle" logic */
2058inline_size void
1707idle_reify (EV_P) 2059idle_reify (EV_P)
1708{ 2060{
1709 if (expect_false (idleall)) 2061 if (expect_false (idleall))
1710 { 2062 {
1711 int pri; 2063 int pri;
… …
1723 } 2075 }
1724 } 2076 }
1725} 2077}
1726#endif 2078#endif
1727 2079
1728void inline_size 2080/* make timers pending */
2081inline_size void
1729timers_reify (EV_P) 2082timers_reify (EV_P)
1730{ 2083{
1731 EV_FREQUENT_CHECK; 2084 EV_FREQUENT_CHECK;
1732 2085
1733 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2086 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734 { 2087 {
1735 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2088 do
1736
1737 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1738
1739 /* first reschedule or stop timer */
1740 if (w->repeat)
1741 { 2089 {
2090 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2091
2092 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2093
2094 /* first reschedule or stop timer */
2095 if (w->repeat)
2096 {
1742 ev_at (w) += w->repeat; 2097 ev_at (w) += w->repeat;
1743 if (ev_at (w) < mn_now) 2098 if (ev_at (w) < mn_now)
1744 ev_at (w) = mn_now; 2099 ev_at (w) = mn_now;
1745 2100
1746 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2101 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1747 2102
1748 ANHE_at_cache (timers [HEAP0]); 2103 ANHE_at_cache (timers [HEAP0]);
1749 downheap (timers, timercnt, HEAP0); 2104 downheap (timers, timercnt, HEAP0);
2105 }
2106 else
2107 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2108
2109 EV_FREQUENT_CHECK;
2110 feed_reverse (EV_A_ (W)w);
1750 } 2111 }
1751 else 2112 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753 2113
1754 EV_FREQUENT_CHECK; 2114 feed_reverse_done (EV_A_ EV_TIMER);
1755 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1756 } 2115 }
1757} 2116}
1758 2117
1759#if EV_PERIODIC_ENABLE 2118#if EV_PERIODIC_ENABLE
1760void inline_size 2119/* make periodics pending */
2120inline_size void
1761periodics_reify (EV_P) 2121periodics_reify (EV_P)
1762{ 2122{
1763 EV_FREQUENT_CHECK; 2123 EV_FREQUENT_CHECK;
1764 2124
1765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2125 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766 { 2126 {
1767 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2127 int feed_count = 0;
1768 2128
1769 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2129 do
1770
1771 /* first reschedule or stop timer */
1772 if (w->reschedule_cb)
1773 { 2130 {
2131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2132
2133 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2134
2135 /* first reschedule or stop timer */
2136 if (w->reschedule_cb)
2137 {
1774 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2138 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775 2139
1776 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2140 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1777 2141
1778 ANHE_at_cache (periodics [HEAP0]); 2142 ANHE_at_cache (periodics [HEAP0]);
1779 downheap (periodics, periodiccnt, HEAP0); 2143 downheap (periodics, periodiccnt, HEAP0);
2144 }
2145 else if (w->interval)
2146 {
2147 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2148 /* if next trigger time is not sufficiently in the future, put it there */
2149 /* this might happen because of floating point inexactness */
2150 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2151 {
2152 ev_at (w) += w->interval;
2153
2154 /* if interval is unreasonably low we might still have a time in the past */
2155 /* so correct this. this will make the periodic very inexact, but the user */
2156 /* has effectively asked to get triggered more often than possible */
2157 if (ev_at (w) < ev_rt_now)
2158 ev_at (w) = ev_rt_now;
2159 }
2160
2161 ANHE_at_cache (periodics [HEAP0]);
2162 downheap (periodics, periodiccnt, HEAP0);
2163 }
2164 else
2165 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2166
2167 EV_FREQUENT_CHECK;
2168 feed_reverse (EV_A_ (W)w);
1780 } 2169 }
1781 else if (w->interval) 2170 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1782 {
1783 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1784 /* if next trigger time is not sufficiently in the future, put it there */
1785 /* this might happen because of floating point inexactness */
1786 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1787 {
1788 ev_at (w) += w->interval;
1789 2171
1790 /* if interval is unreasonably low we might still have a time in the past */
1791 /* so correct this. this will make the periodic very inexact, but the user */
1792 /* has effectively asked to get triggered more often than possible */
1793 if (ev_at (w) < ev_rt_now)
1794 ev_at (w) = ev_rt_now;
1795 }
1796
1797 ANHE_at_cache (periodics [HEAP0]);
1798 downheap (periodics, periodiccnt, HEAP0);
1799 }
1800 else
1801 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1802
1803 EV_FREQUENT_CHECK;
1804 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2172 feed_reverse_done (EV_A_ EV_PERIODIC);
1805 } 2173 }
1806} 2174}
1807 2175
2176/* simply recalculate all periodics */
2177/* TODO: maybe ensure that at least one event happens when jumping forward? */
1808static void noinline 2178static void noinline
1809periodics_reschedule (EV_P) 2179periodics_reschedule (EV_P)
1810{ 2180{
1811 int i; 2181 int i;
1812 2182
… …
1825 2195
1826 reheap (periodics, periodiccnt); 2196 reheap (periodics, periodiccnt);
1827} 2197}
1828#endif 2198#endif
1829 2199
1830void inline_speed 2200/* adjust all timers by a given offset */
2201static void noinline
2202timers_reschedule (EV_P_ ev_tstamp adjust)
2203{
2204 int i;
2205
2206 for (i = 0; i < timercnt; ++i)
2207 {
2208 ANHE *he = timers + i + HEAP0;
2209 ANHE_w (*he)->at += adjust;
2210 ANHE_at_cache (*he);
2211 }
2212}
2213
2214/* fetch new monotonic and realtime times from the kernel */
2215/* also detect if there was a timejump, and act accordingly */
2216inline_speed void
1831time_update (EV_P_ ev_tstamp max_block) 2217time_update (EV_P_ ev_tstamp max_block)
1832{ 2218{
1833 int i;
1834
1835#if EV_USE_MONOTONIC 2219#if EV_USE_MONOTONIC
1836 if (expect_true (have_monotonic)) 2220 if (expect_true (have_monotonic))
1837 { 2221 {
2222 int i;
1838 ev_tstamp odiff = rtmn_diff; 2223 ev_tstamp odiff = rtmn_diff;
1839 2224
1840 mn_now = get_clock (); 2225 mn_now = get_clock ();
1841 2226
1842 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2227 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1868 ev_rt_now = ev_time (); 2253 ev_rt_now = ev_time ();
1869 mn_now = get_clock (); 2254 mn_now = get_clock ();
1870 now_floor = mn_now; 2255 now_floor = mn_now;
1871 } 2256 }
1872 2257
2258 /* no timer adjustment, as the monotonic clock doesn't jump */
2259 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873# if EV_PERIODIC_ENABLE 2260# if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 2261 periodics_reschedule (EV_A);
1875# endif 2262# endif
1876 /* no timer adjustment, as the monotonic clock doesn't jump */
1877 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878 } 2263 }
1879 else 2264 else
1880#endif 2265#endif
1881 { 2266 {
1882 ev_rt_now = ev_time (); 2267 ev_rt_now = ev_time ();
1883 2268
1884 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2269 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1885 { 2270 {
2271 /* adjust timers. this is easy, as the offset is the same for all of them */
2272 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1886#if EV_PERIODIC_ENABLE 2273#if EV_PERIODIC_ENABLE
1887 periodics_reschedule (EV_A); 2274 periodics_reschedule (EV_A);
1888#endif 2275#endif
1889 /* adjust timers. this is easy, as the offset is the same for all of them */
1890 for (i = 0; i < timercnt; ++i)
1891 {
1892 ANHE *he = timers + i + HEAP0;
1893 ANHE_w (*he)->at += ev_rt_now - mn_now;
1894 ANHE_at_cache (*he);
1895 }
1896 } 2276 }
1897 2277
1898 mn_now = ev_rt_now; 2278 mn_now = ev_rt_now;
1899 } 2279 }
1900} 2280}
1901 2281
1902void 2282void
1903ev_ref (EV_P)
1904{
1905 ++activecnt;
1906}
1907
1908void
1909ev_unref (EV_P)
1910{
1911 --activecnt;
1912}
1913
1914void
1915ev_now_update (EV_P)
1916{
1917 time_update (EV_A_ 1e100);
1918}
1919
1920static int loop_done;
1921
1922void
1923ev_loop (EV_P_ int flags) 2283ev_run (EV_P_ int flags)
1924{ 2284{
2285#if EV_FEATURE_API
2286 ++loop_depth;
2287#endif
2288
2289 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2290
1925 loop_done = EVUNLOOP_CANCEL; 2291 loop_done = EVBREAK_CANCEL;
1926 2292
1927 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2293 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1928 2294
1929 do 2295 do
1930 { 2296 {
1931#if EV_VERIFY >= 2 2297#if EV_VERIFY >= 2
1932 ev_loop_verify (EV_A); 2298 ev_verify (EV_A);
1933#endif 2299#endif
1934 2300
1935#ifndef _WIN32 2301#ifndef _WIN32
1936 if (expect_false (curpid)) /* penalise the forking check even more */ 2302 if (expect_false (curpid)) /* penalise the forking check even more */
1937 if (expect_false (getpid () != curpid)) 2303 if (expect_false (getpid () != curpid))
… …
1945 /* we might have forked, so queue fork handlers */ 2311 /* we might have forked, so queue fork handlers */
1946 if (expect_false (postfork)) 2312 if (expect_false (postfork))
1947 if (forkcnt) 2313 if (forkcnt)
1948 { 2314 {
1949 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2315 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1950 call_pending (EV_A); 2316 EV_INVOKE_PENDING;
1951 } 2317 }
1952#endif 2318#endif
1953 2319
2320#if EV_PREPARE_ENABLE
1954 /* queue prepare watchers (and execute them) */ 2321 /* queue prepare watchers (and execute them) */
1955 if (expect_false (preparecnt)) 2322 if (expect_false (preparecnt))
1956 { 2323 {
1957 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2324 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1958 call_pending (EV_A); 2325 EV_INVOKE_PENDING;
1959 } 2326 }
2327#endif
1960 2328
1961 if (expect_false (!activecnt)) 2329 if (expect_false (loop_done))
1962 break; 2330 break;
1963 2331
1964 /* we might have forked, so reify kernel state if necessary */ 2332 /* we might have forked, so reify kernel state if necessary */
1965 if (expect_false (postfork)) 2333 if (expect_false (postfork))
1966 loop_fork (EV_A); 2334 loop_fork (EV_A);
… …
1971 /* calculate blocking time */ 2339 /* calculate blocking time */
1972 { 2340 {
1973 ev_tstamp waittime = 0.; 2341 ev_tstamp waittime = 0.;
1974 ev_tstamp sleeptime = 0.; 2342 ev_tstamp sleeptime = 0.;
1975 2343
2344 /* remember old timestamp for io_blocktime calculation */
2345 ev_tstamp prev_mn_now = mn_now;
2346
2347 /* update time to cancel out callback processing overhead */
2348 time_update (EV_A_ 1e100);
2349
1976 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2350 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1977 { 2351 {
1978 /* update time to cancel out callback processing overhead */
1979 time_update (EV_A_ 1e100);
1980
1981 waittime = MAX_BLOCKTIME; 2352 waittime = MAX_BLOCKTIME;
1982 2353
1983 if (timercnt) 2354 if (timercnt)
1984 { 2355 {
1985 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2356 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1992 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2363 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1993 if (waittime > to) waittime = to; 2364 if (waittime > to) waittime = to;
1994 } 2365 }
1995#endif 2366#endif
1996 2367
2368 /* don't let timeouts decrease the waittime below timeout_blocktime */
1997 if (expect_false (waittime < timeout_blocktime)) 2369 if (expect_false (waittime < timeout_blocktime))
1998 waittime = timeout_blocktime; 2370 waittime = timeout_blocktime;
1999 2371
2000 sleeptime = waittime - backend_fudge; 2372 /* extra check because io_blocktime is commonly 0 */
2001
2002 if (expect_true (sleeptime > io_blocktime)) 2373 if (expect_false (io_blocktime))
2003 sleeptime = io_blocktime;
2004
2005 if (sleeptime)
2006 { 2374 {
2375 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2376
2377 if (sleeptime > waittime - backend_fudge)
2378 sleeptime = waittime - backend_fudge;
2379
2380 if (expect_true (sleeptime > 0.))
2381 {
2007 ev_sleep (sleeptime); 2382 ev_sleep (sleeptime);
2008 waittime -= sleeptime; 2383 waittime -= sleeptime;
2384 }
2009 } 2385 }
2010 } 2386 }
2011 2387
2388#if EV_FEATURE_API
2012 ++loop_count; 2389 ++loop_count;
2390#endif
2391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2013 backend_poll (EV_A_ waittime); 2392 backend_poll (EV_A_ waittime);
2393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2014 2394
2015 /* update ev_rt_now, do magic */ 2395 /* update ev_rt_now, do magic */
2016 time_update (EV_A_ waittime + sleeptime); 2396 time_update (EV_A_ waittime + sleeptime);
2017 } 2397 }
2018 2398
… …
2025#if EV_IDLE_ENABLE 2405#if EV_IDLE_ENABLE
2026 /* queue idle watchers unless other events are pending */ 2406 /* queue idle watchers unless other events are pending */
2027 idle_reify (EV_A); 2407 idle_reify (EV_A);
2028#endif 2408#endif
2029 2409
2410#if EV_CHECK_ENABLE
2030 /* queue check watchers, to be executed first */ 2411 /* queue check watchers, to be executed first */
2031 if (expect_false (checkcnt)) 2412 if (expect_false (checkcnt))
2032 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2413 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2414#endif
2033 2415
2034 call_pending (EV_A); 2416 EV_INVOKE_PENDING;
2035 } 2417 }
2036 while (expect_true ( 2418 while (expect_true (
2037 activecnt 2419 activecnt
2038 && !loop_done 2420 && !loop_done
2039 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2421 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2040 )); 2422 ));
2041 2423
2042 if (loop_done == EVUNLOOP_ONE) 2424 if (loop_done == EVBREAK_ONE)
2043 loop_done = EVUNLOOP_CANCEL; 2425 loop_done = EVBREAK_CANCEL;
2044}
2045 2426
2427#if EV_FEATURE_API
2428 --loop_depth;
2429#endif
2430}
2431
2046void 2432void
2047ev_unloop (EV_P_ int how) 2433ev_break (EV_P_ int how)
2048{ 2434{
2049 loop_done = how; 2435 loop_done = how;
2050} 2436}
2051 2437
2438void
2439ev_ref (EV_P)
2440{
2441 ++activecnt;
2442}
2443
2444void
2445ev_unref (EV_P)
2446{
2447 --activecnt;
2448}
2449
2450void
2451ev_now_update (EV_P)
2452{
2453 time_update (EV_A_ 1e100);
2454}
2455
2456void
2457ev_suspend (EV_P)
2458{
2459 ev_now_update (EV_A);
2460}
2461
2462void
2463ev_resume (EV_P)
2464{
2465 ev_tstamp mn_prev = mn_now;
2466
2467 ev_now_update (EV_A);
2468 timers_reschedule (EV_A_ mn_now - mn_prev);
2469#if EV_PERIODIC_ENABLE
2470 /* TODO: really do this? */
2471 periodics_reschedule (EV_A);
2472#endif
2473}
2474
2052/*****************************************************************************/ 2475/*****************************************************************************/
2476/* singly-linked list management, used when the expected list length is short */
2053 2477
2054void inline_size 2478inline_size void
2055wlist_add (WL *head, WL elem) 2479wlist_add (WL *head, WL elem)
2056{ 2480{
2057 elem->next = *head; 2481 elem->next = *head;
2058 *head = elem; 2482 *head = elem;
2059} 2483}
2060 2484
2061void inline_size 2485inline_size void
2062wlist_del (WL *head, WL elem) 2486wlist_del (WL *head, WL elem)
2063{ 2487{
2064 while (*head) 2488 while (*head)
2065 { 2489 {
2066 if (*head == elem) 2490 if (expect_true (*head == elem))
2067 { 2491 {
2068 *head = elem->next; 2492 *head = elem->next;
2069 return; 2493 break;
2070 } 2494 }
2071 2495
2072 head = &(*head)->next; 2496 head = &(*head)->next;
2073 } 2497 }
2074} 2498}
2075 2499
2076void inline_speed 2500/* internal, faster, version of ev_clear_pending */
2501inline_speed void
2077clear_pending (EV_P_ W w) 2502clear_pending (EV_P_ W w)
2078{ 2503{
2079 if (w->pending) 2504 if (w->pending)
2080 { 2505 {
2081 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2506 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2082 w->pending = 0; 2507 w->pending = 0;
2083 } 2508 }
2084} 2509}
2085 2510
2086int 2511int
… …
2090 int pending = w_->pending; 2515 int pending = w_->pending;
2091 2516
2092 if (expect_true (pending)) 2517 if (expect_true (pending))
2093 { 2518 {
2094 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2519 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2520 p->w = (W)&pending_w;
2095 w_->pending = 0; 2521 w_->pending = 0;
2096 p->w = 0;
2097 return p->events; 2522 return p->events;
2098 } 2523 }
2099 else 2524 else
2100 return 0; 2525 return 0;
2101} 2526}
2102 2527
2103void inline_size 2528inline_size void
2104pri_adjust (EV_P_ W w) 2529pri_adjust (EV_P_ W w)
2105{ 2530{
2106 int pri = w->priority; 2531 int pri = ev_priority (w);
2107 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2532 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2108 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2533 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2109 w->priority = pri; 2534 ev_set_priority (w, pri);
2110} 2535}
2111 2536
2112void inline_speed 2537inline_speed void
2113ev_start (EV_P_ W w, int active) 2538ev_start (EV_P_ W w, int active)
2114{ 2539{
2115 pri_adjust (EV_A_ w); 2540 pri_adjust (EV_A_ w);
2116 w->active = active; 2541 w->active = active;
2117 ev_ref (EV_A); 2542 ev_ref (EV_A);
2118} 2543}
2119 2544
2120void inline_size 2545inline_size void
2121ev_stop (EV_P_ W w) 2546ev_stop (EV_P_ W w)
2122{ 2547{
2123 ev_unref (EV_A); 2548 ev_unref (EV_A);
2124 w->active = 0; 2549 w->active = 0;
2125} 2550}
… …
2132 int fd = w->fd; 2557 int fd = w->fd;
2133 2558
2134 if (expect_false (ev_is_active (w))) 2559 if (expect_false (ev_is_active (w)))
2135 return; 2560 return;
2136 2561
2137 assert (("ev_io_start called with negative fd", fd >= 0)); 2562 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2563 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2138 2564
2139 EV_FREQUENT_CHECK; 2565 EV_FREQUENT_CHECK;
2140 2566
2141 ev_start (EV_A_ (W)w, 1); 2567 ev_start (EV_A_ (W)w, 1);
2142 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2568 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2143 wlist_add (&anfds[fd].head, (WL)w); 2569 wlist_add (&anfds[fd].head, (WL)w);
2144 2570
2145 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2571 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2146 w->events &= ~EV_IOFDSET; 2572 w->events &= ~EV__IOFDSET;
2147 2573
2148 EV_FREQUENT_CHECK; 2574 EV_FREQUENT_CHECK;
2149} 2575}
2150 2576
2151void noinline 2577void noinline
… …
2153{ 2579{
2154 clear_pending (EV_A_ (W)w); 2580 clear_pending (EV_A_ (W)w);
2155 if (expect_false (!ev_is_active (w))) 2581 if (expect_false (!ev_is_active (w)))
2156 return; 2582 return;
2157 2583
2158 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2584 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2159 2585
2160 EV_FREQUENT_CHECK; 2586 EV_FREQUENT_CHECK;
2161 2587
2162 wlist_del (&anfds[w->fd].head, (WL)w); 2588 wlist_del (&anfds[w->fd].head, (WL)w);
2163 ev_stop (EV_A_ (W)w); 2589 ev_stop (EV_A_ (W)w);
2164 2590
2165 fd_change (EV_A_ w->fd, 1); 2591 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2166 2592
2167 EV_FREQUENT_CHECK; 2593 EV_FREQUENT_CHECK;
2168} 2594}
2169 2595
2170void noinline 2596void noinline
… …
2173 if (expect_false (ev_is_active (w))) 2599 if (expect_false (ev_is_active (w)))
2174 return; 2600 return;
2175 2601
2176 ev_at (w) += mn_now; 2602 ev_at (w) += mn_now;
2177 2603
2178 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2604 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2179 2605
2180 EV_FREQUENT_CHECK; 2606 EV_FREQUENT_CHECK;
2181 2607
2182 ++timercnt; 2608 ++timercnt;
2183 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2609 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2186 ANHE_at_cache (timers [ev_active (w)]); 2612 ANHE_at_cache (timers [ev_active (w)]);
2187 upheap (timers, ev_active (w)); 2613 upheap (timers, ev_active (w));
2188 2614
2189 EV_FREQUENT_CHECK; 2615 EV_FREQUENT_CHECK;
2190 2616
2191 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2617 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2192} 2618}
2193 2619
2194void noinline 2620void noinline
2195ev_timer_stop (EV_P_ ev_timer *w) 2621ev_timer_stop (EV_P_ ev_timer *w)
2196{ 2622{
… …
2201 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
2202 2628
2203 { 2629 {
2204 int active = ev_active (w); 2630 int active = ev_active (w);
2205 2631
2206 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2632 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2207 2633
2208 --timercnt; 2634 --timercnt;
2209 2635
2210 if (expect_true (active < timercnt + HEAP0)) 2636 if (expect_true (active < timercnt + HEAP0))
2211 { 2637 {
2212 timers [active] = timers [timercnt + HEAP0]; 2638 timers [active] = timers [timercnt + HEAP0];
2213 adjustheap (timers, timercnt, active); 2639 adjustheap (timers, timercnt, active);
2214 } 2640 }
2215 } 2641 }
2216 2642
2217 EV_FREQUENT_CHECK;
2218
2219 ev_at (w) -= mn_now; 2643 ev_at (w) -= mn_now;
2220 2644
2221 ev_stop (EV_A_ (W)w); 2645 ev_stop (EV_A_ (W)w);
2646
2647 EV_FREQUENT_CHECK;
2222} 2648}
2223 2649
2224void noinline 2650void noinline
2225ev_timer_again (EV_P_ ev_timer *w) 2651ev_timer_again (EV_P_ ev_timer *w)
2226{ 2652{
… …
2244 } 2670 }
2245 2671
2246 EV_FREQUENT_CHECK; 2672 EV_FREQUENT_CHECK;
2247} 2673}
2248 2674
2675ev_tstamp
2676ev_timer_remaining (EV_P_ ev_timer *w)
2677{
2678 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2679}
2680
2249#if EV_PERIODIC_ENABLE 2681#if EV_PERIODIC_ENABLE
2250void noinline 2682void noinline
2251ev_periodic_start (EV_P_ ev_periodic *w) 2683ev_periodic_start (EV_P_ ev_periodic *w)
2252{ 2684{
2253 if (expect_false (ev_is_active (w))) 2685 if (expect_false (ev_is_active (w)))
… …
2255 2687
2256 if (w->reschedule_cb) 2688 if (w->reschedule_cb)
2257 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2689 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2258 else if (w->interval) 2690 else if (w->interval)
2259 { 2691 {
2260 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2692 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2261 /* this formula differs from the one in periodic_reify because we do not always round up */ 2693 /* this formula differs from the one in periodic_reify because we do not always round up */
2262 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2694 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2263 } 2695 }
2264 else 2696 else
2265 ev_at (w) = w->offset; 2697 ev_at (w) = w->offset;
… …
2273 ANHE_at_cache (periodics [ev_active (w)]); 2705 ANHE_at_cache (periodics [ev_active (w)]);
2274 upheap (periodics, ev_active (w)); 2706 upheap (periodics, ev_active (w));
2275 2707
2276 EV_FREQUENT_CHECK; 2708 EV_FREQUENT_CHECK;
2277 2709
2278 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2710 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2279} 2711}
2280 2712
2281void noinline 2713void noinline
2282ev_periodic_stop (EV_P_ ev_periodic *w) 2714ev_periodic_stop (EV_P_ ev_periodic *w)
2283{ 2715{
… …
2288 EV_FREQUENT_CHECK; 2720 EV_FREQUENT_CHECK;
2289 2721
2290 { 2722 {
2291 int active = ev_active (w); 2723 int active = ev_active (w);
2292 2724
2293 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2725 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2294 2726
2295 --periodiccnt; 2727 --periodiccnt;
2296 2728
2297 if (expect_true (active < periodiccnt + HEAP0)) 2729 if (expect_true (active < periodiccnt + HEAP0))
2298 { 2730 {
2299 periodics [active] = periodics [periodiccnt + HEAP0]; 2731 periodics [active] = periodics [periodiccnt + HEAP0];
2300 adjustheap (periodics, periodiccnt, active); 2732 adjustheap (periodics, periodiccnt, active);
2301 } 2733 }
2302 } 2734 }
2303 2735
2304 EV_FREQUENT_CHECK;
2305
2306 ev_stop (EV_A_ (W)w); 2736 ev_stop (EV_A_ (W)w);
2737
2738 EV_FREQUENT_CHECK;
2307} 2739}
2308 2740
2309void noinline 2741void noinline
2310ev_periodic_again (EV_P_ ev_periodic *w) 2742ev_periodic_again (EV_P_ ev_periodic *w)
2311{ 2743{
… …
2317 2749
2318#ifndef SA_RESTART 2750#ifndef SA_RESTART
2319# define SA_RESTART 0 2751# define SA_RESTART 0
2320#endif 2752#endif
2321 2753
2754#if EV_SIGNAL_ENABLE
2755
2322void noinline 2756void noinline
2323ev_signal_start (EV_P_ ev_signal *w) 2757ev_signal_start (EV_P_ ev_signal *w)
2324{ 2758{
2325#if EV_MULTIPLICITY
2326 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2327#endif
2328 if (expect_false (ev_is_active (w))) 2759 if (expect_false (ev_is_active (w)))
2329 return; 2760 return;
2330 2761
2331 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2762 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2332 2763
2333 evpipe_init (EV_A); 2764#if EV_MULTIPLICITY
2765 assert (("libev: a signal must not be attached to two different loops",
2766 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2334 2767
2335 EV_FREQUENT_CHECK; 2768 signals [w->signum - 1].loop = EV_A;
2769#endif
2336 2770
2771 EV_FREQUENT_CHECK;
2772
2773#if EV_USE_SIGNALFD
2774 if (sigfd == -2)
2337 { 2775 {
2338#ifndef _WIN32 2776 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2339 sigset_t full, prev; 2777 if (sigfd < 0 && errno == EINVAL)
2340 sigfillset (&full); 2778 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2341 sigprocmask (SIG_SETMASK, &full, &prev);
2342#endif
2343 2779
2344 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2780 if (sigfd >= 0)
2781 {
2782 fd_intern (sigfd); /* doing it twice will not hurt */
2345 2783
2346#ifndef _WIN32 2784 sigemptyset (&sigfd_set);
2347 sigprocmask (SIG_SETMASK, &prev, 0); 2785
2348#endif 2786 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2787 ev_set_priority (&sigfd_w, EV_MAXPRI);
2788 ev_io_start (EV_A_ &sigfd_w);
2789 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2790 }
2349 } 2791 }
2792
2793 if (sigfd >= 0)
2794 {
2795 /* TODO: check .head */
2796 sigaddset (&sigfd_set, w->signum);
2797 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2798
2799 signalfd (sigfd, &sigfd_set, 0);
2800 }
2801#endif
2350 2802
2351 ev_start (EV_A_ (W)w, 1); 2803 ev_start (EV_A_ (W)w, 1);
2352 wlist_add (&signals [w->signum - 1].head, (WL)w); 2804 wlist_add (&signals [w->signum - 1].head, (WL)w);
2353 2805
2354 if (!((WL)w)->next) 2806 if (!((WL)w)->next)
2807# if EV_USE_SIGNALFD
2808 if (sigfd < 0) /*TODO*/
2809# endif
2355 { 2810 {
2356#if _WIN32 2811# ifdef _WIN32
2812 evpipe_init (EV_A);
2813
2357 signal (w->signum, ev_sighandler); 2814 signal (w->signum, ev_sighandler);
2358#else 2815# else
2359 struct sigaction sa; 2816 struct sigaction sa;
2817
2818 evpipe_init (EV_A);
2819
2360 sa.sa_handler = ev_sighandler; 2820 sa.sa_handler = ev_sighandler;
2361 sigfillset (&sa.sa_mask); 2821 sigfillset (&sa.sa_mask);
2362 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2822 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2363 sigaction (w->signum, &sa, 0); 2823 sigaction (w->signum, &sa, 0);
2824
2825 sigemptyset (&sa.sa_mask);
2826 sigaddset (&sa.sa_mask, w->signum);
2827 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2364#endif 2828#endif
2365 } 2829 }
2366 2830
2367 EV_FREQUENT_CHECK; 2831 EV_FREQUENT_CHECK;
2368} 2832}
2369 2833
2370void noinline 2834void noinline
… …
2378 2842
2379 wlist_del (&signals [w->signum - 1].head, (WL)w); 2843 wlist_del (&signals [w->signum - 1].head, (WL)w);
2380 ev_stop (EV_A_ (W)w); 2844 ev_stop (EV_A_ (W)w);
2381 2845
2382 if (!signals [w->signum - 1].head) 2846 if (!signals [w->signum - 1].head)
2847 {
2848#if EV_MULTIPLICITY
2849 signals [w->signum - 1].loop = 0; /* unattach from signal */
2850#endif
2851#if EV_USE_SIGNALFD
2852 if (sigfd >= 0)
2853 {
2854 sigset_t ss;
2855
2856 sigemptyset (&ss);
2857 sigaddset (&ss, w->signum);
2858 sigdelset (&sigfd_set, w->signum);
2859
2860 signalfd (sigfd, &sigfd_set, 0);
2861 sigprocmask (SIG_UNBLOCK, &ss, 0);
2862 }
2863 else
2864#endif
2383 signal (w->signum, SIG_DFL); 2865 signal (w->signum, SIG_DFL);
2866 }
2384 2867
2385 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
2386} 2869}
2870
2871#endif
2872
2873#if EV_CHILD_ENABLE
2387 2874
2388void 2875void
2389ev_child_start (EV_P_ ev_child *w) 2876ev_child_start (EV_P_ ev_child *w)
2390{ 2877{
2391#if EV_MULTIPLICITY 2878#if EV_MULTIPLICITY
2392 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2879 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2393#endif 2880#endif
2394 if (expect_false (ev_is_active (w))) 2881 if (expect_false (ev_is_active (w)))
2395 return; 2882 return;
2396 2883
2397 EV_FREQUENT_CHECK; 2884 EV_FREQUENT_CHECK;
2398 2885
2399 ev_start (EV_A_ (W)w, 1); 2886 ev_start (EV_A_ (W)w, 1);
2400 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2887 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2401 2888
2402 EV_FREQUENT_CHECK; 2889 EV_FREQUENT_CHECK;
2403} 2890}
2404 2891
2405void 2892void
… …
2409 if (expect_false (!ev_is_active (w))) 2896 if (expect_false (!ev_is_active (w)))
2410 return; 2897 return;
2411 2898
2412 EV_FREQUENT_CHECK; 2899 EV_FREQUENT_CHECK;
2413 2900
2414 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2901 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2415 ev_stop (EV_A_ (W)w); 2902 ev_stop (EV_A_ (W)w);
2416 2903
2417 EV_FREQUENT_CHECK; 2904 EV_FREQUENT_CHECK;
2418} 2905}
2906
2907#endif
2419 2908
2420#if EV_STAT_ENABLE 2909#if EV_STAT_ENABLE
2421 2910
2422# ifdef _WIN32 2911# ifdef _WIN32
2423# undef lstat 2912# undef lstat
2424# define lstat(a,b) _stati64 (a,b) 2913# define lstat(a,b) _stati64 (a,b)
2425# endif 2914# endif
2426 2915
2427#define DEF_STAT_INTERVAL 5.0074891 2916#define DEF_STAT_INTERVAL 5.0074891
2917#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2428#define MIN_STAT_INTERVAL 0.1074891 2918#define MIN_STAT_INTERVAL 0.1074891
2429 2919
2430static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2920static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2431 2921
2432#if EV_USE_INOTIFY 2922#if EV_USE_INOTIFY
2433# define EV_INOTIFY_BUFSIZE 8192 2923
2924/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2925# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2434 2926
2435static void noinline 2927static void noinline
2436infy_add (EV_P_ ev_stat *w) 2928infy_add (EV_P_ ev_stat *w)
2437{ 2929{
2438 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2930 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2439 2931
2440 if (w->wd < 0) 2932 if (w->wd >= 0)
2933 {
2934 struct statfs sfs;
2935
2936 /* now local changes will be tracked by inotify, but remote changes won't */
2937 /* unless the filesystem is known to be local, we therefore still poll */
2938 /* also do poll on <2.6.25, but with normal frequency */
2939
2940 if (!fs_2625)
2941 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2942 else if (!statfs (w->path, &sfs)
2943 && (sfs.f_type == 0x1373 /* devfs */
2944 || sfs.f_type == 0xEF53 /* ext2/3 */
2945 || sfs.f_type == 0x3153464a /* jfs */
2946 || sfs.f_type == 0x52654973 /* reiser3 */
2947 || sfs.f_type == 0x01021994 /* tempfs */
2948 || sfs.f_type == 0x58465342 /* xfs */))
2949 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2950 else
2951 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2441 { 2952 }
2442 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2953 else
2954 {
2955 /* can't use inotify, continue to stat */
2956 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2443 2957
2444 /* monitor some parent directory for speedup hints */ 2958 /* if path is not there, monitor some parent directory for speedup hints */
2445 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2959 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2446 /* but an efficiency issue only */ 2960 /* but an efficiency issue only */
2447 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2961 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2448 { 2962 {
2449 char path [4096]; 2963 char path [4096];
2450 strcpy (path, w->path); 2964 strcpy (path, w->path);
… …
2454 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2968 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2455 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2969 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2456 2970
2457 char *pend = strrchr (path, '/'); 2971 char *pend = strrchr (path, '/');
2458 2972
2459 if (!pend) 2973 if (!pend || pend == path)
2460 break; /* whoops, no '/', complain to your admin */ 2974 break;
2461 2975
2462 *pend = 0; 2976 *pend = 0;
2463 w->wd = inotify_add_watch (fs_fd, path, mask); 2977 w->wd = inotify_add_watch (fs_fd, path, mask);
2464 } 2978 }
2465 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2979 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2466 } 2980 }
2467 } 2981 }
2468 else
2469 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2470 2982
2471 if (w->wd >= 0) 2983 if (w->wd >= 0)
2472 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2984 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2985
2986 /* now re-arm timer, if required */
2987 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2988 ev_timer_again (EV_A_ &w->timer);
2989 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2473} 2990}
2474 2991
2475static void noinline 2992static void noinline
2476infy_del (EV_P_ ev_stat *w) 2993infy_del (EV_P_ ev_stat *w)
2477{ 2994{
… …
2480 2997
2481 if (wd < 0) 2998 if (wd < 0)
2482 return; 2999 return;
2483 3000
2484 w->wd = -2; 3001 w->wd = -2;
2485 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3002 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2486 wlist_del (&fs_hash [slot].head, (WL)w); 3003 wlist_del (&fs_hash [slot].head, (WL)w);
2487 3004
2488 /* remove this watcher, if others are watching it, they will rearm */ 3005 /* remove this watcher, if others are watching it, they will rearm */
2489 inotify_rm_watch (fs_fd, wd); 3006 inotify_rm_watch (fs_fd, wd);
2490} 3007}
2491 3008
2492static void noinline 3009static void noinline
2493infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3010infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2494{ 3011{
2495 if (slot < 0) 3012 if (slot < 0)
2496 /* overflow, need to check for all hahs slots */ 3013 /* overflow, need to check for all hash slots */
2497 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3014 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2498 infy_wd (EV_A_ slot, wd, ev); 3015 infy_wd (EV_A_ slot, wd, ev);
2499 else 3016 else
2500 { 3017 {
2501 WL w_; 3018 WL w_;
2502 3019
2503 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3020 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2504 { 3021 {
2505 ev_stat *w = (ev_stat *)w_; 3022 ev_stat *w = (ev_stat *)w_;
2506 w_ = w_->next; /* lets us remove this watcher and all before it */ 3023 w_ = w_->next; /* lets us remove this watcher and all before it */
2507 3024
2508 if (w->wd == wd || wd == -1) 3025 if (w->wd == wd || wd == -1)
2509 { 3026 {
2510 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3027 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2511 { 3028 {
3029 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2512 w->wd = -1; 3030 w->wd = -1;
2513 infy_add (EV_A_ w); /* re-add, no matter what */ 3031 infy_add (EV_A_ w); /* re-add, no matter what */
2514 } 3032 }
2515 3033
2516 stat_timer_cb (EV_A_ &w->timer, 0); 3034 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2521 3039
2522static void 3040static void
2523infy_cb (EV_P_ ev_io *w, int revents) 3041infy_cb (EV_P_ ev_io *w, int revents)
2524{ 3042{
2525 char buf [EV_INOTIFY_BUFSIZE]; 3043 char buf [EV_INOTIFY_BUFSIZE];
2526 struct inotify_event *ev = (struct inotify_event *)buf;
2527 int ofs; 3044 int ofs;
2528 int len = read (fs_fd, buf, sizeof (buf)); 3045 int len = read (fs_fd, buf, sizeof (buf));
2529 3046
2530 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3047 for (ofs = 0; ofs < len; )
3048 {
3049 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2531 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3050 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3051 ofs += sizeof (struct inotify_event) + ev->len;
3052 }
2532} 3053}
2533 3054
2534void inline_size 3055inline_size unsigned int
3056ev_linux_version (void)
3057{
3058 struct utsname buf;
3059 unsigned int v;
3060 int i;
3061 char *p = buf.release;
3062
3063 if (uname (&buf))
3064 return 0;
3065
3066 for (i = 3+1; --i; )
3067 {
3068 unsigned int c = 0;
3069
3070 for (;;)
3071 {
3072 if (*p >= '0' && *p <= '9')
3073 c = c * 10 + *p++ - '0';
3074 else
3075 {
3076 p += *p == '.';
3077 break;
3078 }
3079 }
3080
3081 v = (v << 8) | c;
3082 }
3083
3084 return v;
3085}
3086
3087inline_size void
3088ev_check_2625 (EV_P)
3089{
3090 /* kernels < 2.6.25 are borked
3091 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3092 */
3093 if (ev_linux_version () < 0x020619)
3094 return;
3095
3096 fs_2625 = 1;
3097}
3098
3099inline_size int
3100infy_newfd (void)
3101{
3102#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3104 if (fd >= 0)
3105 return fd;
3106#endif
3107 return inotify_init ();
3108}
3109
3110inline_size void
2535infy_init (EV_P) 3111infy_init (EV_P)
2536{ 3112{
2537 if (fs_fd != -2) 3113 if (fs_fd != -2)
2538 return; 3114 return;
2539 3115
3116 fs_fd = -1;
3117
3118 ev_check_2625 (EV_A);
3119
2540 fs_fd = inotify_init (); 3120 fs_fd = infy_newfd ();
2541 3121
2542 if (fs_fd >= 0) 3122 if (fs_fd >= 0)
2543 { 3123 {
3124 fd_intern (fs_fd);
2544 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3125 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2545 ev_set_priority (&fs_w, EV_MAXPRI); 3126 ev_set_priority (&fs_w, EV_MAXPRI);
2546 ev_io_start (EV_A_ &fs_w); 3127 ev_io_start (EV_A_ &fs_w);
3128 ev_unref (EV_A);
2547 } 3129 }
2548} 3130}
2549 3131
2550void inline_size 3132inline_size void
2551infy_fork (EV_P) 3133infy_fork (EV_P)
2552{ 3134{
2553 int slot; 3135 int slot;
2554 3136
2555 if (fs_fd < 0) 3137 if (fs_fd < 0)
2556 return; 3138 return;
2557 3139
3140 ev_ref (EV_A);
3141 ev_io_stop (EV_A_ &fs_w);
2558 close (fs_fd); 3142 close (fs_fd);
2559 fs_fd = inotify_init (); 3143 fs_fd = infy_newfd ();
2560 3144
3145 if (fs_fd >= 0)
3146 {
3147 fd_intern (fs_fd);
3148 ev_io_set (&fs_w, fs_fd, EV_READ);
3149 ev_io_start (EV_A_ &fs_w);
3150 ev_unref (EV_A);
3151 }
3152
2561 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3153 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2562 { 3154 {
2563 WL w_ = fs_hash [slot].head; 3155 WL w_ = fs_hash [slot].head;
2564 fs_hash [slot].head = 0; 3156 fs_hash [slot].head = 0;
2565 3157
2566 while (w_) 3158 while (w_)
… …
2571 w->wd = -1; 3163 w->wd = -1;
2572 3164
2573 if (fs_fd >= 0) 3165 if (fs_fd >= 0)
2574 infy_add (EV_A_ w); /* re-add, no matter what */ 3166 infy_add (EV_A_ w); /* re-add, no matter what */
2575 else 3167 else
3168 {
3169 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3170 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2576 ev_timer_start (EV_A_ &w->timer); 3171 ev_timer_again (EV_A_ &w->timer);
3172 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3173 }
2577 } 3174 }
2578
2579 } 3175 }
2580} 3176}
2581 3177
2582#endif 3178#endif
2583 3179
… …
2599static void noinline 3195static void noinline
2600stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3196stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2601{ 3197{
2602 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3198 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2603 3199
2604 /* we copy this here each the time so that */ 3200 ev_statdata prev = w->attr;
2605 /* prev has the old value when the callback gets invoked */
2606 w->prev = w->attr;
2607 ev_stat_stat (EV_A_ w); 3201 ev_stat_stat (EV_A_ w);
2608 3202
2609 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3203 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2610 if ( 3204 if (
2611 w->prev.st_dev != w->attr.st_dev 3205 prev.st_dev != w->attr.st_dev
2612 || w->prev.st_ino != w->attr.st_ino 3206 || prev.st_ino != w->attr.st_ino
2613 || w->prev.st_mode != w->attr.st_mode 3207 || prev.st_mode != w->attr.st_mode
2614 || w->prev.st_nlink != w->attr.st_nlink 3208 || prev.st_nlink != w->attr.st_nlink
2615 || w->prev.st_uid != w->attr.st_uid 3209 || prev.st_uid != w->attr.st_uid
2616 || w->prev.st_gid != w->attr.st_gid 3210 || prev.st_gid != w->attr.st_gid
2617 || w->prev.st_rdev != w->attr.st_rdev 3211 || prev.st_rdev != w->attr.st_rdev
2618 || w->prev.st_size != w->attr.st_size 3212 || prev.st_size != w->attr.st_size
2619 || w->prev.st_atime != w->attr.st_atime 3213 || prev.st_atime != w->attr.st_atime
2620 || w->prev.st_mtime != w->attr.st_mtime 3214 || prev.st_mtime != w->attr.st_mtime
2621 || w->prev.st_ctime != w->attr.st_ctime 3215 || prev.st_ctime != w->attr.st_ctime
2622 ) { 3216 ) {
3217 /* we only update w->prev on actual differences */
3218 /* in case we test more often than invoke the callback, */
3219 /* to ensure that prev is always different to attr */
3220 w->prev = prev;
3221
2623 #if EV_USE_INOTIFY 3222 #if EV_USE_INOTIFY
3223 if (fs_fd >= 0)
3224 {
2624 infy_del (EV_A_ w); 3225 infy_del (EV_A_ w);
2625 infy_add (EV_A_ w); 3226 infy_add (EV_A_ w);
2626 ev_stat_stat (EV_A_ w); /* avoid race... */ 3227 ev_stat_stat (EV_A_ w); /* avoid race... */
3228 }
2627 #endif 3229 #endif
2628 3230
2629 ev_feed_event (EV_A_ w, EV_STAT); 3231 ev_feed_event (EV_A_ w, EV_STAT);
2630 } 3232 }
2631} 3233}
… …
2634ev_stat_start (EV_P_ ev_stat *w) 3236ev_stat_start (EV_P_ ev_stat *w)
2635{ 3237{
2636 if (expect_false (ev_is_active (w))) 3238 if (expect_false (ev_is_active (w)))
2637 return; 3239 return;
2638 3240
2639 /* since we use memcmp, we need to clear any padding data etc. */
2640 memset (&w->prev, 0, sizeof (ev_statdata));
2641 memset (&w->attr, 0, sizeof (ev_statdata));
2642
2643 ev_stat_stat (EV_A_ w); 3241 ev_stat_stat (EV_A_ w);
2644 3242
3243 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2645 if (w->interval < MIN_STAT_INTERVAL) 3244 w->interval = MIN_STAT_INTERVAL;
2646 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2647 3245
2648 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3246 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2649 ev_set_priority (&w->timer, ev_priority (w)); 3247 ev_set_priority (&w->timer, ev_priority (w));
2650 3248
2651#if EV_USE_INOTIFY 3249#if EV_USE_INOTIFY
2652 infy_init (EV_A); 3250 infy_init (EV_A);
2653 3251
2654 if (fs_fd >= 0) 3252 if (fs_fd >= 0)
2655 infy_add (EV_A_ w); 3253 infy_add (EV_A_ w);
2656 else 3254 else
2657#endif 3255#endif
3256 {
2658 ev_timer_start (EV_A_ &w->timer); 3257 ev_timer_again (EV_A_ &w->timer);
3258 ev_unref (EV_A);
3259 }
2659 3260
2660 ev_start (EV_A_ (W)w, 1); 3261 ev_start (EV_A_ (W)w, 1);
2661 3262
2662 EV_FREQUENT_CHECK; 3263 EV_FREQUENT_CHECK;
2663} 3264}
… …
2672 EV_FREQUENT_CHECK; 3273 EV_FREQUENT_CHECK;
2673 3274
2674#if EV_USE_INOTIFY 3275#if EV_USE_INOTIFY
2675 infy_del (EV_A_ w); 3276 infy_del (EV_A_ w);
2676#endif 3277#endif
3278
3279 if (ev_is_active (&w->timer))
3280 {
3281 ev_ref (EV_A);
2677 ev_timer_stop (EV_A_ &w->timer); 3282 ev_timer_stop (EV_A_ &w->timer);
3283 }
2678 3284
2679 ev_stop (EV_A_ (W)w); 3285 ev_stop (EV_A_ (W)w);
2680 3286
2681 EV_FREQUENT_CHECK; 3287 EV_FREQUENT_CHECK;
2682} 3288}
… …
2727 3333
2728 EV_FREQUENT_CHECK; 3334 EV_FREQUENT_CHECK;
2729} 3335}
2730#endif 3336#endif
2731 3337
3338#if EV_PREPARE_ENABLE
2732void 3339void
2733ev_prepare_start (EV_P_ ev_prepare *w) 3340ev_prepare_start (EV_P_ ev_prepare *w)
2734{ 3341{
2735 if (expect_false (ev_is_active (w))) 3342 if (expect_false (ev_is_active (w)))
2736 return; 3343 return;
… …
2762 3369
2763 ev_stop (EV_A_ (W)w); 3370 ev_stop (EV_A_ (W)w);
2764 3371
2765 EV_FREQUENT_CHECK; 3372 EV_FREQUENT_CHECK;
2766} 3373}
3374#endif
2767 3375
3376#if EV_CHECK_ENABLE
2768void 3377void
2769ev_check_start (EV_P_ ev_check *w) 3378ev_check_start (EV_P_ ev_check *w)
2770{ 3379{
2771 if (expect_false (ev_is_active (w))) 3380 if (expect_false (ev_is_active (w)))
2772 return; 3381 return;
… …
2798 3407
2799 ev_stop (EV_A_ (W)w); 3408 ev_stop (EV_A_ (W)w);
2800 3409
2801 EV_FREQUENT_CHECK; 3410 EV_FREQUENT_CHECK;
2802} 3411}
3412#endif
2803 3413
2804#if EV_EMBED_ENABLE 3414#if EV_EMBED_ENABLE
2805void noinline 3415void noinline
2806ev_embed_sweep (EV_P_ ev_embed *w) 3416ev_embed_sweep (EV_P_ ev_embed *w)
2807{ 3417{
2808 ev_loop (w->other, EVLOOP_NONBLOCK); 3418 ev_run (w->other, EVRUN_NOWAIT);
2809} 3419}
2810 3420
2811static void 3421static void
2812embed_io_cb (EV_P_ ev_io *io, int revents) 3422embed_io_cb (EV_P_ ev_io *io, int revents)
2813{ 3423{
2814 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3424 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2815 3425
2816 if (ev_cb (w)) 3426 if (ev_cb (w))
2817 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3427 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2818 else 3428 else
2819 ev_loop (w->other, EVLOOP_NONBLOCK); 3429 ev_run (w->other, EVRUN_NOWAIT);
2820} 3430}
2821 3431
2822static void 3432static void
2823embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3433embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2824{ 3434{
2825 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3435 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2826 3436
2827 { 3437 {
2828 struct ev_loop *loop = w->other; 3438 EV_P = w->other;
2829 3439
2830 while (fdchangecnt) 3440 while (fdchangecnt)
2831 { 3441 {
2832 fd_reify (EV_A); 3442 fd_reify (EV_A);
2833 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3443 ev_run (EV_A_ EVRUN_NOWAIT);
2834 } 3444 }
2835 } 3445 }
2836} 3446}
2837 3447
2838static void 3448static void
2839embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3449embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2840{ 3450{
2841 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3451 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2842 3452
3453 ev_embed_stop (EV_A_ w);
3454
2843 { 3455 {
2844 struct ev_loop *loop = w->other; 3456 EV_P = w->other;
2845 3457
2846 ev_loop_fork (EV_A); 3458 ev_loop_fork (EV_A);
3459 ev_run (EV_A_ EVRUN_NOWAIT);
2847 } 3460 }
3461
3462 ev_embed_start (EV_A_ w);
2848} 3463}
2849 3464
2850#if 0 3465#if 0
2851static void 3466static void
2852embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3467embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2860{ 3475{
2861 if (expect_false (ev_is_active (w))) 3476 if (expect_false (ev_is_active (w)))
2862 return; 3477 return;
2863 3478
2864 { 3479 {
2865 struct ev_loop *loop = w->other; 3480 EV_P = w->other;
2866 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3481 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2867 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3482 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2868 } 3483 }
2869 3484
2870 EV_FREQUENT_CHECK; 3485 EV_FREQUENT_CHECK;
2871 3486
… …
2897 3512
2898 ev_io_stop (EV_A_ &w->io); 3513 ev_io_stop (EV_A_ &w->io);
2899 ev_prepare_stop (EV_A_ &w->prepare); 3514 ev_prepare_stop (EV_A_ &w->prepare);
2900 ev_fork_stop (EV_A_ &w->fork); 3515 ev_fork_stop (EV_A_ &w->fork);
2901 3516
3517 ev_stop (EV_A_ (W)w);
3518
2902 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2903} 3520}
2904#endif 3521#endif
2905 3522
2906#if EV_FORK_ENABLE 3523#if EV_FORK_ENABLE
… …
2946ev_async_start (EV_P_ ev_async *w) 3563ev_async_start (EV_P_ ev_async *w)
2947{ 3564{
2948 if (expect_false (ev_is_active (w))) 3565 if (expect_false (ev_is_active (w)))
2949 return; 3566 return;
2950 3567
3568 w->sent = 0;
3569
2951 evpipe_init (EV_A); 3570 evpipe_init (EV_A);
2952 3571
2953 EV_FREQUENT_CHECK; 3572 EV_FREQUENT_CHECK;
2954 3573
2955 ev_start (EV_A_ (W)w, ++asynccnt); 3574 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2982 3601
2983void 3602void
2984ev_async_send (EV_P_ ev_async *w) 3603ev_async_send (EV_P_ ev_async *w)
2985{ 3604{
2986 w->sent = 1; 3605 w->sent = 1;
2987 evpipe_write (EV_A_ &gotasync); 3606 evpipe_write (EV_A_ &async_pending);
2988} 3607}
2989#endif 3608#endif
2990 3609
2991/*****************************************************************************/ 3610/*****************************************************************************/
2992 3611
… …
3032{ 3651{
3033 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3652 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3034 3653
3035 if (expect_false (!once)) 3654 if (expect_false (!once))
3036 { 3655 {
3037 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3656 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3038 return; 3657 return;
3039 } 3658 }
3040 3659
3041 once->cb = cb; 3660 once->cb = cb;
3042 once->arg = arg; 3661 once->arg = arg;
… …
3054 ev_timer_set (&once->to, timeout, 0.); 3673 ev_timer_set (&once->to, timeout, 0.);
3055 ev_timer_start (EV_A_ &once->to); 3674 ev_timer_start (EV_A_ &once->to);
3056 } 3675 }
3057} 3676}
3058 3677
3678/*****************************************************************************/
3679
3680#if EV_WALK_ENABLE
3681void
3682ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3683{
3684 int i, j;
3685 ev_watcher_list *wl, *wn;
3686
3687 if (types & (EV_IO | EV_EMBED))
3688 for (i = 0; i < anfdmax; ++i)
3689 for (wl = anfds [i].head; wl; )
3690 {
3691 wn = wl->next;
3692
3693#if EV_EMBED_ENABLE
3694 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3695 {
3696 if (types & EV_EMBED)
3697 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3698 }
3699 else
3700#endif
3701#if EV_USE_INOTIFY
3702 if (ev_cb ((ev_io *)wl) == infy_cb)
3703 ;
3704 else
3705#endif
3706 if ((ev_io *)wl != &pipe_w)
3707 if (types & EV_IO)
3708 cb (EV_A_ EV_IO, wl);
3709
3710 wl = wn;
3711 }
3712
3713 if (types & (EV_TIMER | EV_STAT))
3714 for (i = timercnt + HEAP0; i-- > HEAP0; )
3715#if EV_STAT_ENABLE
3716 /*TODO: timer is not always active*/
3717 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3718 {
3719 if (types & EV_STAT)
3720 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3721 }
3722 else
3723#endif
3724 if (types & EV_TIMER)
3725 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3726
3727#if EV_PERIODIC_ENABLE
3728 if (types & EV_PERIODIC)
3729 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3730 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3731#endif
3732
3733#if EV_IDLE_ENABLE
3734 if (types & EV_IDLE)
3735 for (j = NUMPRI; i--; )
3736 for (i = idlecnt [j]; i--; )
3737 cb (EV_A_ EV_IDLE, idles [j][i]);
3738#endif
3739
3740#if EV_FORK_ENABLE
3741 if (types & EV_FORK)
3742 for (i = forkcnt; i--; )
3743 if (ev_cb (forks [i]) != embed_fork_cb)
3744 cb (EV_A_ EV_FORK, forks [i]);
3745#endif
3746
3747#if EV_ASYNC_ENABLE
3748 if (types & EV_ASYNC)
3749 for (i = asynccnt; i--; )
3750 cb (EV_A_ EV_ASYNC, asyncs [i]);
3751#endif
3752
3753#if EV_PREPARE_ENABLE
3754 if (types & EV_PREPARE)
3755 for (i = preparecnt; i--; )
3756# if EV_EMBED_ENABLE
3757 if (ev_cb (prepares [i]) != embed_prepare_cb)
3758# endif
3759 cb (EV_A_ EV_PREPARE, prepares [i]);
3760#endif
3761
3762#if EV_CHECK_ENABLE
3763 if (types & EV_CHECK)
3764 for (i = checkcnt; i--; )
3765 cb (EV_A_ EV_CHECK, checks [i]);
3766#endif
3767
3768#if EV_SIGNAL_ENABLE
3769 if (types & EV_SIGNAL)
3770 for (i = 0; i < EV_NSIG - 1; ++i)
3771 for (wl = signals [i].head; wl; )
3772 {
3773 wn = wl->next;
3774 cb (EV_A_ EV_SIGNAL, wl);
3775 wl = wn;
3776 }
3777#endif
3778
3779#if EV_CHILD_ENABLE
3780 if (types & EV_CHILD)
3781 for (i = (EV_PID_HASHSIZE); i--; )
3782 for (wl = childs [i]; wl; )
3783 {
3784 wn = wl->next;
3785 cb (EV_A_ EV_CHILD, wl);
3786 wl = wn;
3787 }
3788#endif
3789/* EV_STAT 0x00001000 /* stat data changed */
3790/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3791}
3792#endif
3793
3059#if EV_MULTIPLICITY 3794#if EV_MULTIPLICITY
3060 #include "ev_wrap.h" 3795 #include "ev_wrap.h"
3061#endif 3796#endif
3062 3797
3063#ifdef __cplusplus 3798EV_CPP(})
3064}
3065#endif
3066 3799

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