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Comparing libev/ev.c (file contents):
Revision 1.254 by root, Wed Jun 4 20:26:55 2008 UTC vs.
Revision 1.357 by root, Sat Oct 23 22:25:44 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
130# endif 157# endif
131 158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
158#else 189#else
190# include <io.h>
159# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 192# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
163# endif 195# endif
196# undef EV_AVOID_STDIO
164#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
165 206
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
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
167 244
168#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
169# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
170# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
171# else 248# else
172# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
173# endif 250# endif
174#endif 251#endif
175 252
176#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
177# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
178#endif 255#endif
179 256
180#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
181# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
182# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
183# else 260# else
184# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
185# endif 262# endif
186#endif 263#endif
187 264
188#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
189# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
190#endif 267#endif
191 268
192#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
193# ifdef _WIN32 270# ifdef _WIN32
194# define EV_USE_POLL 0 271# define EV_USE_POLL 0
195# else 272# else
196# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
197# endif 274# endif
198#endif 275#endif
199 276
200#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
201# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
202# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
203# else 280# else
204# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
205# endif 282# endif
206#endif 283#endif
207 284
… …
213# define EV_USE_PORT 0 290# define EV_USE_PORT 0
214#endif 291#endif
215 292
216#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
217# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
218# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
219# else 296# else
220# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
221# endif 298# endif
222#endif 299#endif
223 300
224#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
225# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_PID_HASHSIZE 1
227# else
228# define EV_PID_HASHSIZE 16
229# endif
230#endif 303#endif
231 304
232#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
233# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
234# define EV_INOTIFY_HASHSIZE 1
235# else
236# define EV_INOTIFY_HASHSIZE 16
237# endif
238#endif 307#endif
239 308
240#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
241# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
242# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
243# else 312# else
244# 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
245# endif 322# endif
246#endif 323#endif
247 324
248#if 0 /* debugging */ 325#if 0 /* debugging */
249# define EV_VERIFY 3 326# define EV_VERIFY 3
250# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
251# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
252#endif 329#endif
253 330
254#ifndef EV_VERIFY 331#ifndef EV_VERIFY
255# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
256#endif 333#endif
257 334
258#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
259# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
260#endif 337#endif
261 338
262#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
263# 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
264#endif 355#endif
265 356
266/* 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
267 364
268#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
269# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
270# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
271#endif 368#endif
… …
285# include <sys/select.h> 382# include <sys/select.h>
286# endif 383# endif
287#endif 384#endif
288 385
289#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/statfs.h>
290# include <sys/inotify.h> 388# include <sys/inotify.h>
389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
390# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0
393# endif
291#endif 394#endif
292 395
293#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
294# include <winsock.h> 397# include <winsock.h>
295#endif 398#endif
296 399
297#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
298/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
299# include <stdint.h> 402# include <stdint.h>
300# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
301extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
302# endif 405# endif
303int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
304# ifdef __cplusplus 407# ifdef O_CLOEXEC
305} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
306# endif 412# endif
413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430
431struct signalfd_siginfo
432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
307#endif 436#endif
308 437
309/**/ 438/**/
310 439
311#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
312# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
313#else 442#else
314# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
315#endif 444#endif
316 445
317/* 446/*
… …
324 */ 453 */
325#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
326 455
327#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
328#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
329/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 458
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
330 461
331#if __GNUC__ >= 4 462#if __GNUC__ >= 4
332# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
333# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
334#else 465#else
… …
341 472
342#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
343#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
344#define inline_size static inline 475#define inline_size static inline
345 476
346#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
347# define inline_speed static noinline 480# define inline_speed static noinline
481#endif
482
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484
485#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0)
348#else 487#else
349# define inline_speed static inline
350#endif
351
352#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
353#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
354 490
355#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
356#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
357 493
358typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
360typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
361 497
362#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
363#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
364 500
501#if EV_USE_REALTIME
502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
503/* giving it a reasonably high chance of working on typical architectures */
504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
505#endif
506
365#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
366/* sig_atomic_t is used to avoid per-thread variables or locking but still */
367/* giving it a reasonably high chance of working on typical architetcures */
368static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
509#endif
510
511#ifndef EV_FD_TO_WIN32_HANDLE
512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
513#endif
514#ifndef EV_WIN32_HANDLE_TO_FD
515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
516#endif
517#ifndef EV_WIN32_CLOSE_FD
518# define EV_WIN32_CLOSE_FD(fd) close (fd)
369#endif 519#endif
370 520
371#ifdef _WIN32 521#ifdef _WIN32
372# include "ev_win32.c" 522# include "ev_win32.c"
373#endif 523#endif
374 524
375/*****************************************************************************/ 525/*****************************************************************************/
376 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 struct utsname buf;
536 unsigned int v;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
576
377static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
378 578
379void 579void
380ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
381{ 581{
382 syserr_cb = cb; 582 syserr_cb = cb;
383} 583}
384 584
385static void noinline 585static void noinline
386syserr (const char *msg) 586ev_syserr (const char *msg)
387{ 587{
388 if (!msg) 588 if (!msg)
389 msg = "(libev) system error"; 589 msg = "(libev) system error";
390 590
391 if (syserr_cb) 591 if (syserr_cb)
392 syserr_cb (msg); 592 syserr_cb (msg);
393 else 593 else
394 { 594 {
595#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg);
599 ev_printerr (": ");
600 ev_printerr (err);
601 ev_printerr ("\n");
602#else
395 perror (msg); 603 perror (msg);
604#endif
396 abort (); 605 abort ();
397 } 606 }
398} 607}
399 608
400static void * 609static void *
401ev_realloc_emul (void *ptr, long size) 610ev_realloc_emul (void *ptr, long size)
402{ 611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
403 /* some systems, notably openbsd and darwin, fail to properly 615 /* some systems, notably openbsd and darwin, fail to properly
404 * implement realloc (x, 0) (as required by both ansi c-98 and 616 * implement realloc (x, 0) (as required by both ansi c-89 and
405 * the single unix specification, so work around them here. 617 * the single unix specification, so work around them here.
406 */ 618 */
407 619
408 if (size) 620 if (size)
409 return realloc (ptr, size); 621 return realloc (ptr, size);
410 622
411 free (ptr); 623 free (ptr);
412 return 0; 624 return 0;
625#endif
413} 626}
414 627
415static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
416 629
417void 630void
… …
425{ 638{
426 ptr = alloc (ptr, size); 639 ptr = alloc (ptr, size);
427 640
428 if (!ptr && size) 641 if (!ptr && size)
429 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
430 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
431 abort (); 648 abort ();
432 } 649 }
433 650
434 return ptr; 651 return ptr;
435} 652}
… …
437#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
438#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
439 656
440/*****************************************************************************/ 657/*****************************************************************************/
441 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
442typedef struct 663typedef struct
443{ 664{
444 WL head; 665 WL head;
445 unsigned char events; 666 unsigned char events; /* the events watched for */
667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
446 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
447#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
448 SOCKET handle; 674 SOCKET handle;
449#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
450} ANFD; 679} ANFD;
451 680
681/* stores the pending event set for a given watcher */
452typedef struct 682typedef struct
453{ 683{
454 W w; 684 W w;
455 int events; 685 int events; /* the pending event set for the given watcher */
456} ANPENDING; 686} ANPENDING;
457 687
458#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
459/* hash table entry per inotify-id */ 689/* hash table entry per inotify-id */
460typedef struct 690typedef struct
… …
463} ANFS; 693} ANFS;
464#endif 694#endif
465 695
466/* Heap Entry */ 696/* Heap Entry */
467#if EV_HEAP_CACHE_AT 697#if EV_HEAP_CACHE_AT
698 /* a heap element */
468 typedef struct { 699 typedef struct {
469 ev_tstamp at; 700 ev_tstamp at;
470 WT w; 701 WT w;
471 } ANHE; 702 } ANHE;
472 703
473 #define ANHE_w(he) (he).w /* access watcher, read-write */ 704 #define ANHE_w(he) (he).w /* access watcher, read-write */
474 #define ANHE_at(he) (he).at /* access cached at, read-only */ 705 #define ANHE_at(he) (he).at /* access cached at, read-only */
475 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
476#else 707#else
708 /* a heap element */
477 typedef WT ANHE; 709 typedef WT ANHE;
478 710
479 #define ANHE_w(he) (he) 711 #define ANHE_w(he) (he)
480 #define ANHE_at(he) (he)->at 712 #define ANHE_at(he) (he)->at
481 #define ANHE_at_cache(he) 713 #define ANHE_at_cache(he)
… …
505 737
506 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
507 739
508#endif 740#endif
509 741
742#if EV_FEATURE_API
743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
745# define EV_INVOKE_PENDING invoke_cb (EV_A)
746#else
747# define EV_RELEASE_CB (void)0
748# define EV_ACQUIRE_CB (void)0
749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
750#endif
751
752#define EVBREAK_RECURSE 0x80
753
510/*****************************************************************************/ 754/*****************************************************************************/
511 755
756#ifndef EV_HAVE_EV_TIME
512ev_tstamp 757ev_tstamp
513ev_time (void) 758ev_time (void)
514{ 759{
515#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
516 struct timespec ts; 763 struct timespec ts;
517 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
518 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
519#else 766 }
767#endif
768
520 struct timeval tv; 769 struct timeval tv;
521 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
522 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
523#endif
524} 772}
773#endif
525 774
526ev_tstamp inline_size 775inline_size ev_tstamp
527get_clock (void) 776get_clock (void)
528{ 777{
529#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
530 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
531 { 780 {
… …
552 if (delay > 0.) 801 if (delay > 0.)
553 { 802 {
554#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
555 struct timespec ts; 804 struct timespec ts;
556 805
557 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
558 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
559
560 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
561#elif defined(_WIN32) 808#elif defined(_WIN32)
562 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
563#else 810#else
564 struct timeval tv; 811 struct timeval tv;
565 812
566 tv.tv_sec = (time_t)delay; 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
567 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 814 /* something not guaranteed by newer posix versions, but guaranteed */
568 815 /* by older ones */
816 EV_TV_SET (tv, delay);
569 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
570#endif 818#endif
571 } 819 }
572} 820}
573 821
574/*****************************************************************************/ 822/*****************************************************************************/
575 823
576#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
577 825
578int inline_size 826/* find a suitable new size for the given array, */
827/* hopefully by rounding to a nice-to-malloc size */
828inline_size int
579array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
580{ 830{
581 int ncur = cur + 1; 831 int ncur = cur + 1;
582 832
583 do 833 do
… …
600array_realloc (int elem, void *base, int *cur, int cnt) 850array_realloc (int elem, void *base, int *cur, int cnt)
601{ 851{
602 *cur = array_nextsize (elem, *cur, cnt); 852 *cur = array_nextsize (elem, *cur, cnt);
603 return ev_realloc (base, elem * *cur); 853 return ev_realloc (base, elem * *cur);
604} 854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
605 858
606#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
607 if (expect_false ((cnt) > (cur))) \ 860 if (expect_false ((cnt) > (cur))) \
608 { \ 861 { \
609 int ocur_ = (cur); \ 862 int ocur_ = (cur); \
… …
621 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
622 } 875 }
623#endif 876#endif
624 877
625#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
626 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
627 880
628/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
629 888
630void noinline 889void noinline
631ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
632{ 891{
633 W w_ = (W)w; 892 W w_ = (W)w;
… …
642 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
643 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
644 } 903 }
645} 904}
646 905
647void inline_speed 906inline_speed void
907feed_reverse (EV_P_ W w)
908{
909 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
910 rfeeds [rfeedcnt++] = w;
911}
912
913inline_size void
914feed_reverse_done (EV_P_ int revents)
915{
916 do
917 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
918 while (rfeedcnt);
919}
920
921inline_speed void
648queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
649{ 923{
650 int i; 924 int i;
651 925
652 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
653 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
654} 928}
655 929
656/*****************************************************************************/ 930/*****************************************************************************/
657 931
658void inline_size 932inline_speed void
659anfds_init (ANFD *base, int count)
660{
661 while (count--)
662 {
663 base->head = 0;
664 base->events = EV_NONE;
665 base->reify = 0;
666
667 ++base;
668 }
669}
670
671void inline_speed
672fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
673{ 934{
674 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
675 ev_io *w; 936 ev_io *w;
676 937
677 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
681 if (ev) 942 if (ev)
682 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
683 } 944 }
684} 945}
685 946
947/* do not submit kernel events for fds that have reify set */
948/* because that means they changed while we were polling for new events */
949inline_speed void
950fd_event (EV_P_ int fd, int revents)
951{
952 ANFD *anfd = anfds + fd;
953
954 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents);
956}
957
686void 958void
687ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
688{ 960{
689 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
690 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
691} 963}
692 964
693void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
694fd_reify (EV_P) 968fd_reify (EV_P)
695{ 969{
696 int i; 970 int i;
697 971
698 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
699 { 973 {
700 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
701 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
702 ev_io *w; 976 ev_io *w;
703 977
704 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
705 980
706 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
707 events |= (unsigned char)w->events;
708 982
709#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
710 if (events) 984 if (o_reify & EV__IOFDSET)
711 { 985 {
712 unsigned long arg; 986 unsigned long arg;
713 #ifdef EV_FD_TO_WIN32_HANDLE
714 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715 #else
716 anfd->handle = _get_osfhandle (fd);
717 #endif
718 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
719 } 990 }
720#endif 991#endif
721 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
722 { 994 {
723 unsigned char o_events = anfd->events;
724 unsigned char o_reify = anfd->reify;
725
726 anfd->reify = 0;
727 anfd->events = events; 995 anfd->events = 0;
728 996
729 if (o_events != events || o_reify & EV_IOFDSET) 997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
730 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
731 }
732 } 1006 }
733 1007
734 fdchangecnt = 0; 1008 fdchangecnt = 0;
735} 1009}
736 1010
737void inline_size 1011/* something about the given fd changed */
1012inline_size void
738fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
739{ 1014{
740 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
741 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
742 1017
… …
746 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
747 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
748 } 1023 }
749} 1024}
750 1025
751void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
752fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
753{ 1029{
754 ev_io *w; 1030 ev_io *w;
755 1031
756 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
758 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
759 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
760 } 1036 }
761} 1037}
762 1038
763int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
764fd_valid (int fd) 1041fd_valid (int fd)
765{ 1042{
766#ifdef _WIN32 1043#ifdef _WIN32
767 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
768#else 1045#else
769 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
770#endif 1047#endif
771} 1048}
772 1049
… …
790 1067
791 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
792 if (anfds [fd].events) 1069 if (anfds [fd].events)
793 { 1070 {
794 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
795 return; 1072 break;
796 } 1073 }
797} 1074}
798 1075
799/* usually called after fork if backend needs to re-arm all fds from scratch */ 1076/* usually called after fork if backend needs to re-arm all fds from scratch */
800static void noinline 1077static void noinline
… …
804 1081
805 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
806 if (anfds [fd].events) 1083 if (anfds [fd].events)
807 { 1084 {
808 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
1086 anfds [fd].emask = 0;
809 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
810 } 1088 }
811} 1089}
812 1090
1091/* used to prepare libev internal fd's */
1092/* this is not fork-safe */
1093inline_speed void
1094fd_intern (int fd)
1095{
1096#ifdef _WIN32
1097 unsigned long arg = 1;
1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1099#else
1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
1101 fcntl (fd, F_SETFL, O_NONBLOCK);
1102#endif
1103}
1104
813/*****************************************************************************/ 1105/*****************************************************************************/
814 1106
815/* 1107/*
816 * the heap functions want a real array index. array index 0 uis guaranteed to not 1108 * the heap functions want a real array index. array index 0 is guaranteed to not
817 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
818 * the branching factor of the d-tree. 1110 * the branching factor of the d-tree.
819 */ 1111 */
820 1112
821/* 1113/*
… …
830#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832#define UPHEAP_DONE(p,k) ((p) == (k)) 1124#define UPHEAP_DONE(p,k) ((p) == (k))
833 1125
834/* away from the root */ 1126/* away from the root */
835void inline_speed 1127inline_speed void
836downheap (ANHE *heap, int N, int k) 1128downheap (ANHE *heap, int N, int k)
837{ 1129{
838 ANHE he = heap [k]; 1130 ANHE he = heap [k];
839 ANHE *E = heap + N + HEAP0; 1131 ANHE *E = heap + N + HEAP0;
840 1132
… …
880#define HEAP0 1 1172#define HEAP0 1
881#define HPARENT(k) ((k) >> 1) 1173#define HPARENT(k) ((k) >> 1)
882#define UPHEAP_DONE(p,k) (!(p)) 1174#define UPHEAP_DONE(p,k) (!(p))
883 1175
884/* away from the root */ 1176/* away from the root */
885void inline_speed 1177inline_speed void
886downheap (ANHE *heap, int N, int k) 1178downheap (ANHE *heap, int N, int k)
887{ 1179{
888 ANHE he = heap [k]; 1180 ANHE he = heap [k];
889 1181
890 for (;;) 1182 for (;;)
891 { 1183 {
892 int c = k << 1; 1184 int c = k << 1;
893 1185
894 if (c > N + HEAP0 - 1) 1186 if (c >= N + HEAP0)
895 break; 1187 break;
896 1188
897 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
898 ? 1 : 0; 1190 ? 1 : 0;
899 1191
… …
910 ev_active (ANHE_w (he)) = k; 1202 ev_active (ANHE_w (he)) = k;
911} 1203}
912#endif 1204#endif
913 1205
914/* towards the root */ 1206/* towards the root */
915void inline_speed 1207inline_speed void
916upheap (ANHE *heap, int k) 1208upheap (ANHE *heap, int k)
917{ 1209{
918 ANHE he = heap [k]; 1210 ANHE he = heap [k];
919 1211
920 for (;;) 1212 for (;;)
… …
931 1223
932 heap [k] = he; 1224 heap [k] = he;
933 ev_active (ANHE_w (he)) = k; 1225 ev_active (ANHE_w (he)) = k;
934} 1226}
935 1227
936void inline_size 1228/* move an element suitably so it is in a correct place */
1229inline_size void
937adjustheap (ANHE *heap, int N, int k) 1230adjustheap (ANHE *heap, int N, int k)
938{ 1231{
939 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
940 upheap (heap, k); 1233 upheap (heap, k);
941 else 1234 else
942 downheap (heap, N, k); 1235 downheap (heap, N, k);
943} 1236}
944 1237
945/* rebuild the heap: this function is used only once and executed rarely */ 1238/* rebuild the heap: this function is used only once and executed rarely */
946void inline_size 1239inline_size void
947reheap (ANHE *heap, int N) 1240reheap (ANHE *heap, int N)
948{ 1241{
949 int i; 1242 int i;
950 1243
951 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1244 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
954 upheap (heap, i + HEAP0); 1247 upheap (heap, i + HEAP0);
955} 1248}
956 1249
957/*****************************************************************************/ 1250/*****************************************************************************/
958 1251
1252/* associate signal watchers to a signal signal */
959typedef struct 1253typedef struct
960{ 1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
961 WL head; 1259 WL head;
962 EV_ATOMIC_T gotsig;
963} ANSIG; 1260} ANSIG;
964 1261
965static ANSIG *signals; 1262static ANSIG signals [EV_NSIG - 1];
966static int signalmax;
967
968static EV_ATOMIC_T gotsig;
969
970void inline_size
971signals_init (ANSIG *base, int count)
972{
973 while (count--)
974 {
975 base->head = 0;
976 base->gotsig = 0;
977
978 ++base;
979 }
980}
981 1263
982/*****************************************************************************/ 1264/*****************************************************************************/
983 1265
984void inline_speed 1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
985fd_intern (int fd)
986{
987#ifdef _WIN32
988 unsigned long arg = 1;
989 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
990#else
991 fcntl (fd, F_SETFD, FD_CLOEXEC);
992 fcntl (fd, F_SETFL, O_NONBLOCK);
993#endif
994}
995 1267
996static void noinline 1268static void noinline
997evpipe_init (EV_P) 1269evpipe_init (EV_P)
998{ 1270{
999 if (!ev_is_active (&pipeev)) 1271 if (!ev_is_active (&pipe_w))
1000 { 1272 {
1001#if EV_USE_EVENTFD 1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
1002 if ((evfd = eventfd (0, 0)) >= 0) 1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
1003 { 1279 {
1004 evpipe [0] = -1; 1280 evpipe [0] = -1;
1005 fd_intern (evfd); 1281 fd_intern (evfd); /* doing it twice doesn't hurt */
1006 ev_io_set (&pipeev, evfd, EV_READ); 1282 ev_io_set (&pipe_w, evfd, EV_READ);
1007 } 1283 }
1008 else 1284 else
1009#endif 1285# endif
1010 { 1286 {
1011 while (pipe (evpipe)) 1287 while (pipe (evpipe))
1012 syserr ("(libev) error creating signal/async pipe"); 1288 ev_syserr ("(libev) error creating signal/async pipe");
1013 1289
1014 fd_intern (evpipe [0]); 1290 fd_intern (evpipe [0]);
1015 fd_intern (evpipe [1]); 1291 fd_intern (evpipe [1]);
1016 ev_io_set (&pipeev, evpipe [0], EV_READ); 1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1017 } 1293 }
1018 1294
1019 ev_io_start (EV_A_ &pipeev); 1295 ev_io_start (EV_A_ &pipe_w);
1020 ev_unref (EV_A); /* watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1021 } 1297 }
1022} 1298}
1023 1299
1024void inline_size 1300inline_size void
1025evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026{ 1302{
1027 if (!*flag) 1303 if (!*flag)
1028 { 1304 {
1029 int old_errno = errno; /* save errno because write might clobber it */ 1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1030 1307
1031 *flag = 1; 1308 *flag = 1;
1032 1309
1033#if EV_USE_EVENTFD 1310#if EV_USE_EVENTFD
1034 if (evfd >= 0) 1311 if (evfd >= 0)
… …
1036 uint64_t counter = 1; 1313 uint64_t counter = 1;
1037 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
1038 } 1315 }
1039 else 1316 else
1040#endif 1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1041 write (evpipe [1], &old_errno, 1); 1323 write (evpipe [1], &dummy, 1);
1042 1324
1043 errno = old_errno; 1325 errno = old_errno;
1044 } 1326 }
1045} 1327}
1046 1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
1047static void 1331static void
1048pipecb (EV_P_ ev_io *iow, int revents) 1332pipecb (EV_P_ ev_io *iow, int revents)
1049{ 1333{
1334 int i;
1335
1050#if EV_USE_EVENTFD 1336#if EV_USE_EVENTFD
1051 if (evfd >= 0) 1337 if (evfd >= 0)
1052 { 1338 {
1053 uint64_t counter; 1339 uint64_t counter;
1054 read (evfd, &counter, sizeof (uint64_t)); 1340 read (evfd, &counter, sizeof (uint64_t));
1055 } 1341 }
1056 else 1342 else
1057#endif 1343#endif
1058 { 1344 {
1059 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1060 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
1061 } 1348 }
1062 1349
1063 if (gotsig && ev_is_default_loop (EV_A)) 1350 if (sig_pending)
1064 { 1351 {
1065 int signum; 1352 sig_pending = 0;
1066 gotsig = 0;
1067 1353
1068 for (signum = signalmax; signum--; ) 1354 for (i = EV_NSIG - 1; i--; )
1069 if (signals [signum].gotsig) 1355 if (expect_false (signals [i].pending))
1070 ev_feed_signal_event (EV_A_ signum + 1); 1356 ev_feed_signal_event (EV_A_ i + 1);
1071 } 1357 }
1072 1358
1073#if EV_ASYNC_ENABLE 1359#if EV_ASYNC_ENABLE
1074 if (gotasync) 1360 if (async_pending)
1075 { 1361 {
1076 int i; 1362 async_pending = 0;
1077 gotasync = 0;
1078 1363
1079 for (i = asynccnt; i--; ) 1364 for (i = asynccnt; i--; )
1080 if (asyncs [i]->sent) 1365 if (asyncs [i]->sent)
1081 { 1366 {
1082 asyncs [i]->sent = 0; 1367 asyncs [i]->sent = 0;
… …
1090 1375
1091static void 1376static void
1092ev_sighandler (int signum) 1377ev_sighandler (int signum)
1093{ 1378{
1094#if EV_MULTIPLICITY 1379#if EV_MULTIPLICITY
1095 struct ev_loop *loop = &default_loop_struct; 1380 EV_P = signals [signum - 1].loop;
1096#endif 1381#endif
1097 1382
1098#if _WIN32 1383#ifdef _WIN32
1099 signal (signum, ev_sighandler); 1384 signal (signum, ev_sighandler);
1100#endif 1385#endif
1101 1386
1102 signals [signum - 1].gotsig = 1; 1387 signals [signum - 1].pending = 1;
1103 evpipe_write (EV_A_ &gotsig); 1388 evpipe_write (EV_A_ &sig_pending);
1104} 1389}
1105 1390
1106void noinline 1391void noinline
1107ev_feed_signal_event (EV_P_ int signum) 1392ev_feed_signal_event (EV_P_ int signum)
1108{ 1393{
1109 WL w; 1394 WL w;
1110 1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1111#if EV_MULTIPLICITY 1401#if EV_MULTIPLICITY
1112 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1402 /* it is permissible to try to feed a signal to the wrong loop */
1113#endif 1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1114 1404
1115 --signum; 1405 if (expect_false (signals [signum].loop != EV_A))
1116
1117 if (signum < 0 || signum >= signalmax)
1118 return; 1406 return;
1407#endif
1119 1408
1120 signals [signum].gotsig = 0; 1409 signals [signum].pending = 0;
1121 1410
1122 for (w = signals [signum].head; w; w = w->next) 1411 for (w = signals [signum].head; w; w = w->next)
1123 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1124} 1413}
1125 1414
1415#if EV_USE_SIGNALFD
1416static void
1417sigfdcb (EV_P_ ev_io *iow, int revents)
1418{
1419 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1420
1421 for (;;)
1422 {
1423 ssize_t res = read (sigfd, si, sizeof (si));
1424
1425 /* not ISO-C, as res might be -1, but works with SuS */
1426 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1427 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1428
1429 if (res < (ssize_t)sizeof (si))
1430 break;
1431 }
1432}
1433#endif
1434
1435#endif
1436
1126/*****************************************************************************/ 1437/*****************************************************************************/
1127 1438
1439#if EV_CHILD_ENABLE
1128static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
1129
1130#ifndef _WIN32
1131 1441
1132static ev_signal childev; 1442static ev_signal childev;
1133 1443
1134#ifndef WIFCONTINUED 1444#ifndef WIFCONTINUED
1135# define WIFCONTINUED(status) 0 1445# define WIFCONTINUED(status) 0
1136#endif 1446#endif
1137 1447
1138void inline_speed 1448/* handle a single child status event */
1449inline_speed void
1139child_reap (EV_P_ int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
1140{ 1451{
1141 ev_child *w; 1452 ev_child *w;
1142 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143 1454
1144 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1455 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1145 { 1456 {
1146 if ((w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1147 && (!traced || (w->flags & 1))) 1458 && (!traced || (w->flags & 1)))
1148 { 1459 {
1149 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1460 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1156 1467
1157#ifndef WCONTINUED 1468#ifndef WCONTINUED
1158# define WCONTINUED 0 1469# define WCONTINUED 0
1159#endif 1470#endif
1160 1471
1472/* called on sigchld etc., calls waitpid */
1161static void 1473static void
1162childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
1163{ 1475{
1164 int pid, status; 1476 int pid, status;
1165 1477
… …
1173 /* make sure we are called again until all children have been reaped */ 1485 /* make sure we are called again until all children have been reaped */
1174 /* we need to do it this way so that the callback gets called before we continue */ 1486 /* we need to do it this way so that the callback gets called before we continue */
1175 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1176 1488
1177 child_reap (EV_A_ pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1178 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
1179 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1491 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1180} 1492}
1181 1493
1182#endif 1494#endif
1183 1495
1184/*****************************************************************************/ 1496/*****************************************************************************/
1185 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1186#if EV_USE_PORT 1501#if EV_USE_PORT
1187# include "ev_port.c" 1502# include "ev_port.c"
1188#endif 1503#endif
1189#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1190# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
1246 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
1247 /* it usually doesn't work correctly on anything but sockets and pipes */ 1562 /* it usually doesn't work correctly on anything but sockets and pipes */
1248 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
1249#endif 1564#endif
1250#ifdef __APPLE__ 1565#ifdef __APPLE__
1251 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
1252 flags &= ~EVBACKEND_POLL; 1567 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1568 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1569#endif
1570#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1253#endif 1572#endif
1254 1573
1255 return flags; 1574 return flags;
1256} 1575}
1257 1576
… …
1259ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1260{ 1579{
1261 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1262 1581
1263 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1264 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1265 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1266 1585
1267 return flags; 1586 return flags;
1268} 1587}
1269 1588
1270unsigned int 1589unsigned int
1271ev_backend (EV_P) 1590ev_backend (EV_P)
1272{ 1591{
1273 return backend; 1592 return backend;
1274} 1593}
1275 1594
1595#if EV_FEATURE_API
1276unsigned int 1596unsigned int
1277ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1278{ 1598{
1279 return loop_count; 1599 return loop_count;
1280} 1600}
1281 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
1282void 1608void
1283ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1284{ 1610{
1285 io_blocktime = interval; 1611 io_blocktime = interval;
1286} 1612}
… …
1289ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290{ 1616{
1291 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1292} 1618}
1293 1619
1620void
1621ev_set_userdata (EV_P_ void *data)
1622{
1623 userdata = data;
1624}
1625
1626void *
1627ev_userdata (EV_P)
1628{
1629 return userdata;
1630}
1631
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1633{
1634 invoke_cb = invoke_pending_cb;
1635}
1636
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1638{
1639 release_cb = release;
1640 acquire_cb = acquire;
1641}
1642#endif
1643
1644/* initialise a loop structure, must be zero-initialised */
1294static void noinline 1645static void noinline
1295loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1296{ 1647{
1297 if (!backend) 1648 if (!backend)
1298 { 1649 {
1650#if EV_USE_REALTIME
1651 if (!have_realtime)
1652 {
1653 struct timespec ts;
1654
1655 if (!clock_gettime (CLOCK_REALTIME, &ts))
1656 have_realtime = 1;
1657 }
1658#endif
1659
1299#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1300 { 1662 {
1301 struct timespec ts; 1663 struct timespec ts;
1664
1302 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1303 have_monotonic = 1; 1666 have_monotonic = 1;
1304 } 1667 }
1305#endif 1668#endif
1669
1670 /* pid check not overridable via env */
1671#ifndef _WIN32
1672 if (flags & EVFLAG_FORKCHECK)
1673 curpid = getpid ();
1674#endif
1675
1676 if (!(flags & EVFLAG_NOENV)
1677 && !enable_secure ()
1678 && getenv ("LIBEV_FLAGS"))
1679 flags = atoi (getenv ("LIBEV_FLAGS"));
1306 1680
1307 ev_rt_now = ev_time (); 1681 ev_rt_now = ev_time ();
1308 mn_now = get_clock (); 1682 mn_now = get_clock ();
1309 now_floor = mn_now; 1683 now_floor = mn_now;
1310 rtmn_diff = ev_rt_now - mn_now; 1684 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending;
1687#endif
1311 1688
1312 io_blocktime = 0.; 1689 io_blocktime = 0.;
1313 timeout_blocktime = 0.; 1690 timeout_blocktime = 0.;
1314 backend = 0; 1691 backend = 0;
1315 backend_fd = -1; 1692 backend_fd = -1;
1316 gotasync = 0; 1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1317#if EV_USE_INOTIFY 1697#if EV_USE_INOTIFY
1318 fs_fd = -2; 1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1319#endif 1699#endif
1320 1700#if EV_USE_SIGNALFD
1321 /* pid check not overridable via env */ 1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1322#ifndef _WIN32
1323 if (flags & EVFLAG_FORKCHECK)
1324 curpid = getpid ();
1325#endif 1702#endif
1326
1327 if (!(flags & EVFLAG_NOENV)
1328 && !enable_secure ()
1329 && getenv ("LIBEV_FLAGS"))
1330 flags = atoi (getenv ("LIBEV_FLAGS"));
1331 1703
1332 if (!(flags & 0x0000ffffU)) 1704 if (!(flags & 0x0000ffffU))
1333 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1334 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1335#if EV_USE_PORT 1710#if EV_USE_PORT
1336 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1337#endif 1712#endif
1338#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1339 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1346#endif 1721#endif
1347#if EV_USE_SELECT 1722#if EV_USE_SELECT
1348 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1349#endif 1724#endif
1350 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1351 ev_init (&pipeev, pipecb); 1729 ev_init (&pipe_w, pipecb);
1352 ev_set_priority (&pipeev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1353 } 1732 }
1354} 1733}
1355 1734
1735/* free up a loop structure */
1356static void noinline 1736static void noinline
1357loop_destroy (EV_P) 1737loop_destroy (EV_P)
1358{ 1738{
1359 int i; 1739 int i;
1360 1740
1361 if (ev_is_active (&pipeev)) 1741 if (ev_is_active (&pipe_w))
1362 { 1742 {
1363 ev_ref (EV_A); /* signal watcher */ 1743 /*ev_ref (EV_A);*/
1364 ev_io_stop (EV_A_ &pipeev); 1744 /*ev_io_stop (EV_A_ &pipe_w);*/
1365 1745
1366#if EV_USE_EVENTFD 1746#if EV_USE_EVENTFD
1367 if (evfd >= 0) 1747 if (evfd >= 0)
1368 close (evfd); 1748 close (evfd);
1369#endif 1749#endif
1370 1750
1371 if (evpipe [0] >= 0) 1751 if (evpipe [0] >= 0)
1372 { 1752 {
1373 close (evpipe [0]); 1753 EV_WIN32_CLOSE_FD (evpipe [0]);
1374 close (evpipe [1]); 1754 EV_WIN32_CLOSE_FD (evpipe [1]);
1375 } 1755 }
1376 } 1756 }
1757
1758#if EV_USE_SIGNALFD
1759 if (ev_is_active (&sigfd_w))
1760 close (sigfd);
1761#endif
1377 1762
1378#if EV_USE_INOTIFY 1763#if EV_USE_INOTIFY
1379 if (fs_fd >= 0) 1764 if (fs_fd >= 0)
1380 close (fs_fd); 1765 close (fs_fd);
1381#endif 1766#endif
1382 1767
1383 if (backend_fd >= 0) 1768 if (backend_fd >= 0)
1384 close (backend_fd); 1769 close (backend_fd);
1385 1770
1771#if EV_USE_IOCP
1772 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1773#endif
1386#if EV_USE_PORT 1774#if EV_USE_PORT
1387 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1775 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1388#endif 1776#endif
1389#if EV_USE_KQUEUE 1777#if EV_USE_KQUEUE
1390 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1778 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1405#if EV_IDLE_ENABLE 1793#if EV_IDLE_ENABLE
1406 array_free (idle, [i]); 1794 array_free (idle, [i]);
1407#endif 1795#endif
1408 } 1796 }
1409 1797
1410 ev_free (anfds); anfdmax = 0; 1798 ev_free (anfds); anfds = 0; anfdmax = 0;
1411 1799
1412 /* have to use the microsoft-never-gets-it-right macro */ 1800 /* have to use the microsoft-never-gets-it-right macro */
1801 array_free (rfeed, EMPTY);
1413 array_free (fdchange, EMPTY); 1802 array_free (fdchange, EMPTY);
1414 array_free (timer, EMPTY); 1803 array_free (timer, EMPTY);
1415#if EV_PERIODIC_ENABLE 1804#if EV_PERIODIC_ENABLE
1416 array_free (periodic, EMPTY); 1805 array_free (periodic, EMPTY);
1417#endif 1806#endif
… …
1426 1815
1427 backend = 0; 1816 backend = 0;
1428} 1817}
1429 1818
1430#if EV_USE_INOTIFY 1819#if EV_USE_INOTIFY
1431void inline_size infy_fork (EV_P); 1820inline_size void infy_fork (EV_P);
1432#endif 1821#endif
1433 1822
1434void inline_size 1823inline_size void
1435loop_fork (EV_P) 1824loop_fork (EV_P)
1436{ 1825{
1437#if EV_USE_PORT 1826#if EV_USE_PORT
1438 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1827 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1439#endif 1828#endif
… …
1445#endif 1834#endif
1446#if EV_USE_INOTIFY 1835#if EV_USE_INOTIFY
1447 infy_fork (EV_A); 1836 infy_fork (EV_A);
1448#endif 1837#endif
1449 1838
1450 if (ev_is_active (&pipeev)) 1839 if (ev_is_active (&pipe_w))
1451 { 1840 {
1452 /* this "locks" the handlers against writing to the pipe */ 1841 /* this "locks" the handlers against writing to the pipe */
1453 /* while we modify the fd vars */ 1842 /* while we modify the fd vars */
1454 gotsig = 1; 1843 sig_pending = 1;
1455#if EV_ASYNC_ENABLE 1844#if EV_ASYNC_ENABLE
1456 gotasync = 1; 1845 async_pending = 1;
1457#endif 1846#endif
1458 1847
1459 ev_ref (EV_A); 1848 ev_ref (EV_A);
1460 ev_io_stop (EV_A_ &pipeev); 1849 ev_io_stop (EV_A_ &pipe_w);
1461 1850
1462#if EV_USE_EVENTFD 1851#if EV_USE_EVENTFD
1463 if (evfd >= 0) 1852 if (evfd >= 0)
1464 close (evfd); 1853 close (evfd);
1465#endif 1854#endif
1466 1855
1467 if (evpipe [0] >= 0) 1856 if (evpipe [0] >= 0)
1468 { 1857 {
1469 close (evpipe [0]); 1858 EV_WIN32_CLOSE_FD (evpipe [0]);
1470 close (evpipe [1]); 1859 EV_WIN32_CLOSE_FD (evpipe [1]);
1471 } 1860 }
1472 1861
1862#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1473 evpipe_init (EV_A); 1863 evpipe_init (EV_A);
1474 /* now iterate over everything, in case we missed something */ 1864 /* now iterate over everything, in case we missed something */
1475 pipecb (EV_A_ &pipeev, EV_READ); 1865 pipecb (EV_A_ &pipe_w, EV_READ);
1866#endif
1476 } 1867 }
1477 1868
1478 postfork = 0; 1869 postfork = 0;
1479} 1870}
1480 1871
1481#if EV_MULTIPLICITY 1872#if EV_MULTIPLICITY
1482 1873
1483struct ev_loop * 1874struct ev_loop *
1484ev_loop_new (unsigned int flags) 1875ev_loop_new (unsigned int flags)
1485{ 1876{
1486 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1877 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1487 1878
1488 memset (loop, 0, sizeof (struct ev_loop)); 1879 memset (EV_A, 0, sizeof (struct ev_loop));
1489
1490 loop_init (EV_A_ flags); 1880 loop_init (EV_A_ flags);
1491 1881
1492 if (ev_backend (EV_A)) 1882 if (ev_backend (EV_A))
1493 return loop; 1883 return EV_A;
1494 1884
1495 return 0; 1885 return 0;
1496} 1886}
1497 1887
1498void 1888void
… …
1505void 1895void
1506ev_loop_fork (EV_P) 1896ev_loop_fork (EV_P)
1507{ 1897{
1508 postfork = 1; /* must be in line with ev_default_fork */ 1898 postfork = 1; /* must be in line with ev_default_fork */
1509} 1899}
1900#endif /* multiplicity */
1510 1901
1511#if EV_VERIFY 1902#if EV_VERIFY
1512void noinline 1903static void noinline
1513verify_watcher (EV_P_ W w) 1904verify_watcher (EV_P_ W w)
1514{ 1905{
1515 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1906 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516 1907
1517 if (w->pending) 1908 if (w->pending)
1518 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1909 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1519} 1910}
1520 1911
1521static void noinline 1912static void noinline
1522verify_heap (EV_P_ ANHE *heap, int N) 1913verify_heap (EV_P_ ANHE *heap, int N)
1523{ 1914{
1524 int i; 1915 int i;
1525 1916
1526 for (i = HEAP0; i < N + HEAP0; ++i) 1917 for (i = HEAP0; i < N + HEAP0; ++i)
1527 { 1918 {
1528 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1919 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1529 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1920 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1530 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1921 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1531 1922
1532 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1923 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533 } 1924 }
1534} 1925}
1535 1926
1536static void noinline 1927static void noinline
1537array_verify (EV_P_ W *ws, int cnt) 1928array_verify (EV_P_ W *ws, int cnt)
1538{ 1929{
1539 while (cnt--) 1930 while (cnt--)
1540 { 1931 {
1541 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1932 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542 verify_watcher (EV_A_ ws [cnt]); 1933 verify_watcher (EV_A_ ws [cnt]);
1543 } 1934 }
1544} 1935}
1545#endif 1936#endif
1546 1937
1938#if EV_FEATURE_API
1547void 1939void
1548ev_loop_verify (EV_P) 1940ev_verify (EV_P)
1549{ 1941{
1550#if EV_VERIFY 1942#if EV_VERIFY
1551 int i; 1943 int i;
1552 WL w; 1944 WL w;
1553 1945
1554 assert (activecnt >= -1); 1946 assert (activecnt >= -1);
1555 1947
1556 assert (fdchangemax >= fdchangecnt); 1948 assert (fdchangemax >= fdchangecnt);
1557 for (i = 0; i < fdchangecnt; ++i) 1949 for (i = 0; i < fdchangecnt; ++i)
1558 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1950 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1559 1951
1560 assert (anfdmax >= 0); 1952 assert (anfdmax >= 0);
1561 for (i = 0; i < anfdmax; ++i) 1953 for (i = 0; i < anfdmax; ++i)
1562 for (w = anfds [i].head; w; w = w->next) 1954 for (w = anfds [i].head; w; w = w->next)
1563 { 1955 {
1564 verify_watcher (EV_A_ (W)w); 1956 verify_watcher (EV_A_ (W)w);
1565 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1957 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1566 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1958 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1567 } 1959 }
1568 1960
1569 assert (timermax >= timercnt); 1961 assert (timermax >= timercnt);
1570 verify_heap (EV_A_ timers, timercnt); 1962 verify_heap (EV_A_ timers, timercnt);
1571 1963
… …
1592#if EV_ASYNC_ENABLE 1984#if EV_ASYNC_ENABLE
1593 assert (asyncmax >= asynccnt); 1985 assert (asyncmax >= asynccnt);
1594 array_verify (EV_A_ (W *)asyncs, asynccnt); 1986 array_verify (EV_A_ (W *)asyncs, asynccnt);
1595#endif 1987#endif
1596 1988
1989#if EV_PREPARE_ENABLE
1597 assert (preparemax >= preparecnt); 1990 assert (preparemax >= preparecnt);
1598 array_verify (EV_A_ (W *)prepares, preparecnt); 1991 array_verify (EV_A_ (W *)prepares, preparecnt);
1992#endif
1599 1993
1994#if EV_CHECK_ENABLE
1600 assert (checkmax >= checkcnt); 1995 assert (checkmax >= checkcnt);
1601 array_verify (EV_A_ (W *)checks, checkcnt); 1996 array_verify (EV_A_ (W *)checks, checkcnt);
1997#endif
1602 1998
1603# if 0 1999# if 0
2000#if EV_CHILD_ENABLE
1604 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2001 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1605 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2002 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2003#endif
1606# endif 2004# endif
1607#endif 2005#endif
1608} 2006}
1609 2007#endif
1610#endif /* multiplicity */
1611 2008
1612#if EV_MULTIPLICITY 2009#if EV_MULTIPLICITY
1613struct ev_loop * 2010struct ev_loop *
1614ev_default_loop_init (unsigned int flags) 2011ev_default_loop_init (unsigned int flags)
1615#else 2012#else
… …
1618#endif 2015#endif
1619{ 2016{
1620 if (!ev_default_loop_ptr) 2017 if (!ev_default_loop_ptr)
1621 { 2018 {
1622#if EV_MULTIPLICITY 2019#if EV_MULTIPLICITY
1623 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2020 EV_P = ev_default_loop_ptr = &default_loop_struct;
1624#else 2021#else
1625 ev_default_loop_ptr = 1; 2022 ev_default_loop_ptr = 1;
1626#endif 2023#endif
1627 2024
1628 loop_init (EV_A_ flags); 2025 loop_init (EV_A_ flags);
1629 2026
1630 if (ev_backend (EV_A)) 2027 if (ev_backend (EV_A))
1631 { 2028 {
1632#ifndef _WIN32 2029#if EV_CHILD_ENABLE
1633 ev_signal_init (&childev, childcb, SIGCHLD); 2030 ev_signal_init (&childev, childcb, SIGCHLD);
1634 ev_set_priority (&childev, EV_MAXPRI); 2031 ev_set_priority (&childev, EV_MAXPRI);
1635 ev_signal_start (EV_A_ &childev); 2032 ev_signal_start (EV_A_ &childev);
1636 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2033 ev_unref (EV_A); /* child watcher should not keep loop alive */
1637#endif 2034#endif
… …
1645 2042
1646void 2043void
1647ev_default_destroy (void) 2044ev_default_destroy (void)
1648{ 2045{
1649#if EV_MULTIPLICITY 2046#if EV_MULTIPLICITY
1650 struct ev_loop *loop = ev_default_loop_ptr; 2047 EV_P = ev_default_loop_ptr;
1651#endif 2048#endif
1652 2049
1653#ifndef _WIN32 2050 ev_default_loop_ptr = 0;
2051
2052#if EV_CHILD_ENABLE
1654 ev_ref (EV_A); /* child watcher */ 2053 ev_ref (EV_A); /* child watcher */
1655 ev_signal_stop (EV_A_ &childev); 2054 ev_signal_stop (EV_A_ &childev);
1656#endif 2055#endif
1657 2056
1658 loop_destroy (EV_A); 2057 loop_destroy (EV_A);
… …
1660 2059
1661void 2060void
1662ev_default_fork (void) 2061ev_default_fork (void)
1663{ 2062{
1664#if EV_MULTIPLICITY 2063#if EV_MULTIPLICITY
1665 struct ev_loop *loop = ev_default_loop_ptr; 2064 EV_P = ev_default_loop_ptr;
1666#endif 2065#endif
1667 2066
1668 if (backend)
1669 postfork = 1; /* must be in line with ev_loop_fork */ 2067 postfork = 1; /* must be in line with ev_loop_fork */
1670} 2068}
1671 2069
1672/*****************************************************************************/ 2070/*****************************************************************************/
1673 2071
1674void 2072void
1675ev_invoke (EV_P_ void *w, int revents) 2073ev_invoke (EV_P_ void *w, int revents)
1676{ 2074{
1677 EV_CB_INVOKE ((W)w, revents); 2075 EV_CB_INVOKE ((W)w, revents);
1678} 2076}
1679 2077
1680void inline_speed 2078unsigned int
1681call_pending (EV_P) 2079ev_pending_count (EV_P)
2080{
2081 int pri;
2082 unsigned int count = 0;
2083
2084 for (pri = NUMPRI; pri--; )
2085 count += pendingcnt [pri];
2086
2087 return count;
2088}
2089
2090void noinline
2091ev_invoke_pending (EV_P)
1682{ 2092{
1683 int pri; 2093 int pri;
1684 2094
1685 for (pri = NUMPRI; pri--; ) 2095 for (pri = NUMPRI; pri--; )
1686 while (pendingcnt [pri]) 2096 while (pendingcnt [pri])
1687 { 2097 {
1688 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2098 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1689 2099
1690 if (expect_true (p->w))
1691 {
1692 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2100 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2101 /* ^ this is no longer true, as pending_w could be here */
1693 2102
1694 p->w->pending = 0; 2103 p->w->pending = 0;
1695 EV_CB_INVOKE (p->w, p->events); 2104 EV_CB_INVOKE (p->w, p->events);
1696 EV_FREQUENT_CHECK; 2105 EV_FREQUENT_CHECK;
1697 }
1698 } 2106 }
1699} 2107}
1700 2108
1701#if EV_IDLE_ENABLE 2109#if EV_IDLE_ENABLE
1702void inline_size 2110/* make idle watchers pending. this handles the "call-idle */
2111/* only when higher priorities are idle" logic */
2112inline_size void
1703idle_reify (EV_P) 2113idle_reify (EV_P)
1704{ 2114{
1705 if (expect_false (idleall)) 2115 if (expect_false (idleall))
1706 { 2116 {
1707 int pri; 2117 int pri;
… …
1719 } 2129 }
1720 } 2130 }
1721} 2131}
1722#endif 2132#endif
1723 2133
1724void inline_size 2134/* make timers pending */
2135inline_size void
1725timers_reify (EV_P) 2136timers_reify (EV_P)
1726{ 2137{
1727 EV_FREQUENT_CHECK; 2138 EV_FREQUENT_CHECK;
1728 2139
1729 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2140 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1730 { 2141 {
1731 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2142 do
1732
1733 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1734
1735 /* first reschedule or stop timer */
1736 if (w->repeat)
1737 { 2143 {
2144 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2145
2146 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2147
2148 /* first reschedule or stop timer */
2149 if (w->repeat)
2150 {
1738 ev_at (w) += w->repeat; 2151 ev_at (w) += w->repeat;
1739 if (ev_at (w) < mn_now) 2152 if (ev_at (w) < mn_now)
1740 ev_at (w) = mn_now; 2153 ev_at (w) = mn_now;
1741 2154
1742 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2155 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1743 2156
1744 ANHE_at_cache (timers [HEAP0]); 2157 ANHE_at_cache (timers [HEAP0]);
1745 downheap (timers, timercnt, HEAP0); 2158 downheap (timers, timercnt, HEAP0);
2159 }
2160 else
2161 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2162
2163 EV_FREQUENT_CHECK;
2164 feed_reverse (EV_A_ (W)w);
1746 } 2165 }
1747 else 2166 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1748 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1749 2167
1750 EV_FREQUENT_CHECK; 2168 feed_reverse_done (EV_A_ EV_TIMER);
1751 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1752 } 2169 }
1753} 2170}
1754 2171
1755#if EV_PERIODIC_ENABLE 2172#if EV_PERIODIC_ENABLE
1756void inline_size 2173/* make periodics pending */
2174inline_size void
1757periodics_reify (EV_P) 2175periodics_reify (EV_P)
1758{ 2176{
1759 EV_FREQUENT_CHECK; 2177 EV_FREQUENT_CHECK;
1760 2178
1761 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2179 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1762 { 2180 {
1763 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2181 int feed_count = 0;
1764 2182
1765 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2183 do
1766
1767 /* first reschedule or stop timer */
1768 if (w->reschedule_cb)
1769 { 2184 {
2185 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2186
2187 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2188
2189 /* first reschedule or stop timer */
2190 if (w->reschedule_cb)
2191 {
1770 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2192 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771 2193
1772 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2194 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1773 2195
1774 ANHE_at_cache (periodics [HEAP0]); 2196 ANHE_at_cache (periodics [HEAP0]);
1775 downheap (periodics, periodiccnt, HEAP0); 2197 downheap (periodics, periodiccnt, HEAP0);
2198 }
2199 else if (w->interval)
2200 {
2201 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2202 /* if next trigger time is not sufficiently in the future, put it there */
2203 /* this might happen because of floating point inexactness */
2204 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2205 {
2206 ev_at (w) += w->interval;
2207
2208 /* if interval is unreasonably low we might still have a time in the past */
2209 /* so correct this. this will make the periodic very inexact, but the user */
2210 /* has effectively asked to get triggered more often than possible */
2211 if (ev_at (w) < ev_rt_now)
2212 ev_at (w) = ev_rt_now;
2213 }
2214
2215 ANHE_at_cache (periodics [HEAP0]);
2216 downheap (periodics, periodiccnt, HEAP0);
2217 }
2218 else
2219 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2220
2221 EV_FREQUENT_CHECK;
2222 feed_reverse (EV_A_ (W)w);
1776 } 2223 }
1777 else if (w->interval) 2224 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1778 {
1779 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1780 /* if next trigger time is not sufficiently in the future, put it there */
1781 /* this might happen because of floating point inexactness */
1782 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1783 {
1784 ev_at (w) += w->interval;
1785 2225
1786 /* if interval is unreasonably low we might still have a time in the past */
1787 /* so correct this. this will make the periodic very inexact, but the user */
1788 /* has effectively asked to get triggered more often than possible */
1789 if (ev_at (w) < ev_rt_now)
1790 ev_at (w) = ev_rt_now;
1791 }
1792
1793 ANHE_at_cache (periodics [HEAP0]);
1794 downheap (periodics, periodiccnt, HEAP0);
1795 }
1796 else
1797 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1798
1799 EV_FREQUENT_CHECK;
1800 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2226 feed_reverse_done (EV_A_ EV_PERIODIC);
1801 } 2227 }
1802} 2228}
1803 2229
2230/* simply recalculate all periodics */
2231/* TODO: maybe ensure that at least one event happens when jumping forward? */
1804static void noinline 2232static void noinline
1805periodics_reschedule (EV_P) 2233periodics_reschedule (EV_P)
1806{ 2234{
1807 int i; 2235 int i;
1808 2236
… …
1821 2249
1822 reheap (periodics, periodiccnt); 2250 reheap (periodics, periodiccnt);
1823} 2251}
1824#endif 2252#endif
1825 2253
1826void inline_speed 2254/* adjust all timers by a given offset */
2255static void noinline
2256timers_reschedule (EV_P_ ev_tstamp adjust)
2257{
2258 int i;
2259
2260 for (i = 0; i < timercnt; ++i)
2261 {
2262 ANHE *he = timers + i + HEAP0;
2263 ANHE_w (*he)->at += adjust;
2264 ANHE_at_cache (*he);
2265 }
2266}
2267
2268/* fetch new monotonic and realtime times from the kernel */
2269/* also detect if there was a timejump, and act accordingly */
2270inline_speed void
1827time_update (EV_P_ ev_tstamp max_block) 2271time_update (EV_P_ ev_tstamp max_block)
1828{ 2272{
1829 int i;
1830
1831#if EV_USE_MONOTONIC 2273#if EV_USE_MONOTONIC
1832 if (expect_true (have_monotonic)) 2274 if (expect_true (have_monotonic))
1833 { 2275 {
2276 int i;
1834 ev_tstamp odiff = rtmn_diff; 2277 ev_tstamp odiff = rtmn_diff;
1835 2278
1836 mn_now = get_clock (); 2279 mn_now = get_clock ();
1837 2280
1838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2281 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1864 ev_rt_now = ev_time (); 2307 ev_rt_now = ev_time ();
1865 mn_now = get_clock (); 2308 mn_now = get_clock ();
1866 now_floor = mn_now; 2309 now_floor = mn_now;
1867 } 2310 }
1868 2311
2312 /* no timer adjustment, as the monotonic clock doesn't jump */
2313 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869# if EV_PERIODIC_ENABLE 2314# if EV_PERIODIC_ENABLE
1870 periodics_reschedule (EV_A); 2315 periodics_reschedule (EV_A);
1871# endif 2316# endif
1872 /* no timer adjustment, as the monotonic clock doesn't jump */
1873 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874 } 2317 }
1875 else 2318 else
1876#endif 2319#endif
1877 { 2320 {
1878 ev_rt_now = ev_time (); 2321 ev_rt_now = ev_time ();
1879 2322
1880 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2323 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1881 { 2324 {
2325 /* adjust timers. this is easy, as the offset is the same for all of them */
2326 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1882#if EV_PERIODIC_ENABLE 2327#if EV_PERIODIC_ENABLE
1883 periodics_reschedule (EV_A); 2328 periodics_reschedule (EV_A);
1884#endif 2329#endif
1885 /* adjust timers. this is easy, as the offset is the same for all of them */
1886 for (i = 0; i < timercnt; ++i)
1887 {
1888 ANHE *he = timers + i + HEAP0;
1889 ANHE_w (*he)->at += ev_rt_now - mn_now;
1890 ANHE_at_cache (*he);
1891 }
1892 } 2330 }
1893 2331
1894 mn_now = ev_rt_now; 2332 mn_now = ev_rt_now;
1895 } 2333 }
1896} 2334}
1897 2335
1898void 2336void
1899ev_ref (EV_P)
1900{
1901 ++activecnt;
1902}
1903
1904void
1905ev_unref (EV_P)
1906{
1907 --activecnt;
1908}
1909
1910static int loop_done;
1911
1912void
1913ev_loop (EV_P_ int flags) 2337ev_run (EV_P_ int flags)
1914{ 2338{
2339#if EV_FEATURE_API
2340 ++loop_depth;
2341#endif
2342
2343 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2344
1915 loop_done = EVUNLOOP_CANCEL; 2345 loop_done = EVBREAK_CANCEL;
1916 2346
1917 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2347 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1918 2348
1919 do 2349 do
1920 { 2350 {
1921#if EV_VERIFY >= 2 2351#if EV_VERIFY >= 2
1922 ev_loop_verify (EV_A); 2352 ev_verify (EV_A);
1923#endif 2353#endif
1924 2354
1925#ifndef _WIN32 2355#ifndef _WIN32
1926 if (expect_false (curpid)) /* penalise the forking check even more */ 2356 if (expect_false (curpid)) /* penalise the forking check even more */
1927 if (expect_false (getpid () != curpid)) 2357 if (expect_false (getpid () != curpid))
… …
1935 /* we might have forked, so queue fork handlers */ 2365 /* we might have forked, so queue fork handlers */
1936 if (expect_false (postfork)) 2366 if (expect_false (postfork))
1937 if (forkcnt) 2367 if (forkcnt)
1938 { 2368 {
1939 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2369 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1940 call_pending (EV_A); 2370 EV_INVOKE_PENDING;
1941 } 2371 }
1942#endif 2372#endif
1943 2373
2374#if EV_PREPARE_ENABLE
1944 /* queue prepare watchers (and execute them) */ 2375 /* queue prepare watchers (and execute them) */
1945 if (expect_false (preparecnt)) 2376 if (expect_false (preparecnt))
1946 { 2377 {
1947 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2378 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1948 call_pending (EV_A); 2379 EV_INVOKE_PENDING;
1949 } 2380 }
2381#endif
1950 2382
1951 if (expect_false (!activecnt)) 2383 if (expect_false (loop_done))
1952 break; 2384 break;
1953 2385
1954 /* we might have forked, so reify kernel state if necessary */ 2386 /* we might have forked, so reify kernel state if necessary */
1955 if (expect_false (postfork)) 2387 if (expect_false (postfork))
1956 loop_fork (EV_A); 2388 loop_fork (EV_A);
… …
1961 /* calculate blocking time */ 2393 /* calculate blocking time */
1962 { 2394 {
1963 ev_tstamp waittime = 0.; 2395 ev_tstamp waittime = 0.;
1964 ev_tstamp sleeptime = 0.; 2396 ev_tstamp sleeptime = 0.;
1965 2397
2398 /* remember old timestamp for io_blocktime calculation */
2399 ev_tstamp prev_mn_now = mn_now;
2400
2401 /* update time to cancel out callback processing overhead */
2402 time_update (EV_A_ 1e100);
2403
1966 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2404 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1967 { 2405 {
1968 /* update time to cancel out callback processing overhead */
1969 time_update (EV_A_ 1e100);
1970
1971 waittime = MAX_BLOCKTIME; 2406 waittime = MAX_BLOCKTIME;
1972 2407
1973 if (timercnt) 2408 if (timercnt)
1974 { 2409 {
1975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2410 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1982 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2417 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1983 if (waittime > to) waittime = to; 2418 if (waittime > to) waittime = to;
1984 } 2419 }
1985#endif 2420#endif
1986 2421
2422 /* don't let timeouts decrease the waittime below timeout_blocktime */
1987 if (expect_false (waittime < timeout_blocktime)) 2423 if (expect_false (waittime < timeout_blocktime))
1988 waittime = timeout_blocktime; 2424 waittime = timeout_blocktime;
1989 2425
1990 sleeptime = waittime - backend_fudge; 2426 /* extra check because io_blocktime is commonly 0 */
1991
1992 if (expect_true (sleeptime > io_blocktime)) 2427 if (expect_false (io_blocktime))
1993 sleeptime = io_blocktime;
1994
1995 if (sleeptime)
1996 { 2428 {
2429 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2430
2431 if (sleeptime > waittime - backend_fudge)
2432 sleeptime = waittime - backend_fudge;
2433
2434 if (expect_true (sleeptime > 0.))
2435 {
1997 ev_sleep (sleeptime); 2436 ev_sleep (sleeptime);
1998 waittime -= sleeptime; 2437 waittime -= sleeptime;
2438 }
1999 } 2439 }
2000 } 2440 }
2001 2441
2442#if EV_FEATURE_API
2002 ++loop_count; 2443 ++loop_count;
2444#endif
2445 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2003 backend_poll (EV_A_ waittime); 2446 backend_poll (EV_A_ waittime);
2447 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2004 2448
2005 /* update ev_rt_now, do magic */ 2449 /* update ev_rt_now, do magic */
2006 time_update (EV_A_ waittime + sleeptime); 2450 time_update (EV_A_ waittime + sleeptime);
2007 } 2451 }
2008 2452
… …
2015#if EV_IDLE_ENABLE 2459#if EV_IDLE_ENABLE
2016 /* queue idle watchers unless other events are pending */ 2460 /* queue idle watchers unless other events are pending */
2017 idle_reify (EV_A); 2461 idle_reify (EV_A);
2018#endif 2462#endif
2019 2463
2464#if EV_CHECK_ENABLE
2020 /* queue check watchers, to be executed first */ 2465 /* queue check watchers, to be executed first */
2021 if (expect_false (checkcnt)) 2466 if (expect_false (checkcnt))
2022 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2467 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2468#endif
2023 2469
2024 call_pending (EV_A); 2470 EV_INVOKE_PENDING;
2025 } 2471 }
2026 while (expect_true ( 2472 while (expect_true (
2027 activecnt 2473 activecnt
2028 && !loop_done 2474 && !loop_done
2029 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2475 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2030 )); 2476 ));
2031 2477
2032 if (loop_done == EVUNLOOP_ONE) 2478 if (loop_done == EVBREAK_ONE)
2033 loop_done = EVUNLOOP_CANCEL; 2479 loop_done = EVBREAK_CANCEL;
2034}
2035 2480
2481#if EV_FEATURE_API
2482 --loop_depth;
2483#endif
2484}
2485
2036void 2486void
2037ev_unloop (EV_P_ int how) 2487ev_break (EV_P_ int how)
2038{ 2488{
2039 loop_done = how; 2489 loop_done = how;
2040} 2490}
2041 2491
2492void
2493ev_ref (EV_P)
2494{
2495 ++activecnt;
2496}
2497
2498void
2499ev_unref (EV_P)
2500{
2501 --activecnt;
2502}
2503
2504void
2505ev_now_update (EV_P)
2506{
2507 time_update (EV_A_ 1e100);
2508}
2509
2510void
2511ev_suspend (EV_P)
2512{
2513 ev_now_update (EV_A);
2514}
2515
2516void
2517ev_resume (EV_P)
2518{
2519 ev_tstamp mn_prev = mn_now;
2520
2521 ev_now_update (EV_A);
2522 timers_reschedule (EV_A_ mn_now - mn_prev);
2523#if EV_PERIODIC_ENABLE
2524 /* TODO: really do this? */
2525 periodics_reschedule (EV_A);
2526#endif
2527}
2528
2042/*****************************************************************************/ 2529/*****************************************************************************/
2530/* singly-linked list management, used when the expected list length is short */
2043 2531
2044void inline_size 2532inline_size void
2045wlist_add (WL *head, WL elem) 2533wlist_add (WL *head, WL elem)
2046{ 2534{
2047 elem->next = *head; 2535 elem->next = *head;
2048 *head = elem; 2536 *head = elem;
2049} 2537}
2050 2538
2051void inline_size 2539inline_size void
2052wlist_del (WL *head, WL elem) 2540wlist_del (WL *head, WL elem)
2053{ 2541{
2054 while (*head) 2542 while (*head)
2055 { 2543 {
2056 if (*head == elem) 2544 if (expect_true (*head == elem))
2057 { 2545 {
2058 *head = elem->next; 2546 *head = elem->next;
2059 return; 2547 break;
2060 } 2548 }
2061 2549
2062 head = &(*head)->next; 2550 head = &(*head)->next;
2063 } 2551 }
2064} 2552}
2065 2553
2066void inline_speed 2554/* internal, faster, version of ev_clear_pending */
2555inline_speed void
2067clear_pending (EV_P_ W w) 2556clear_pending (EV_P_ W w)
2068{ 2557{
2069 if (w->pending) 2558 if (w->pending)
2070 { 2559 {
2071 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2560 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2072 w->pending = 0; 2561 w->pending = 0;
2073 } 2562 }
2074} 2563}
2075 2564
2076int 2565int
… …
2080 int pending = w_->pending; 2569 int pending = w_->pending;
2081 2570
2082 if (expect_true (pending)) 2571 if (expect_true (pending))
2083 { 2572 {
2084 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2573 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2574 p->w = (W)&pending_w;
2085 w_->pending = 0; 2575 w_->pending = 0;
2086 p->w = 0;
2087 return p->events; 2576 return p->events;
2088 } 2577 }
2089 else 2578 else
2090 return 0; 2579 return 0;
2091} 2580}
2092 2581
2093void inline_size 2582inline_size void
2094pri_adjust (EV_P_ W w) 2583pri_adjust (EV_P_ W w)
2095{ 2584{
2096 int pri = w->priority; 2585 int pri = ev_priority (w);
2097 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2586 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2587 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099 w->priority = pri; 2588 ev_set_priority (w, pri);
2100} 2589}
2101 2590
2102void inline_speed 2591inline_speed void
2103ev_start (EV_P_ W w, int active) 2592ev_start (EV_P_ W w, int active)
2104{ 2593{
2105 pri_adjust (EV_A_ w); 2594 pri_adjust (EV_A_ w);
2106 w->active = active; 2595 w->active = active;
2107 ev_ref (EV_A); 2596 ev_ref (EV_A);
2108} 2597}
2109 2598
2110void inline_size 2599inline_size void
2111ev_stop (EV_P_ W w) 2600ev_stop (EV_P_ W w)
2112{ 2601{
2113 ev_unref (EV_A); 2602 ev_unref (EV_A);
2114 w->active = 0; 2603 w->active = 0;
2115} 2604}
… …
2122 int fd = w->fd; 2611 int fd = w->fd;
2123 2612
2124 if (expect_false (ev_is_active (w))) 2613 if (expect_false (ev_is_active (w)))
2125 return; 2614 return;
2126 2615
2127 assert (("ev_io_start called with negative fd", fd >= 0)); 2616 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2617 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2128 2618
2129 EV_FREQUENT_CHECK; 2619 EV_FREQUENT_CHECK;
2130 2620
2131 ev_start (EV_A_ (W)w, 1); 2621 ev_start (EV_A_ (W)w, 1);
2132 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2622 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2133 wlist_add (&anfds[fd].head, (WL)w); 2623 wlist_add (&anfds[fd].head, (WL)w);
2134 2624
2135 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2625 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2136 w->events &= ~EV_IOFDSET; 2626 w->events &= ~EV__IOFDSET;
2137 2627
2138 EV_FREQUENT_CHECK; 2628 EV_FREQUENT_CHECK;
2139} 2629}
2140 2630
2141void noinline 2631void noinline
… …
2143{ 2633{
2144 clear_pending (EV_A_ (W)w); 2634 clear_pending (EV_A_ (W)w);
2145 if (expect_false (!ev_is_active (w))) 2635 if (expect_false (!ev_is_active (w)))
2146 return; 2636 return;
2147 2637
2148 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2638 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2149 2639
2150 EV_FREQUENT_CHECK; 2640 EV_FREQUENT_CHECK;
2151 2641
2152 wlist_del (&anfds[w->fd].head, (WL)w); 2642 wlist_del (&anfds[w->fd].head, (WL)w);
2153 ev_stop (EV_A_ (W)w); 2643 ev_stop (EV_A_ (W)w);
2154 2644
2155 fd_change (EV_A_ w->fd, 1); 2645 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2156 2646
2157 EV_FREQUENT_CHECK; 2647 EV_FREQUENT_CHECK;
2158} 2648}
2159 2649
2160void noinline 2650void noinline
… …
2163 if (expect_false (ev_is_active (w))) 2653 if (expect_false (ev_is_active (w)))
2164 return; 2654 return;
2165 2655
2166 ev_at (w) += mn_now; 2656 ev_at (w) += mn_now;
2167 2657
2168 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2658 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2169 2659
2170 EV_FREQUENT_CHECK; 2660 EV_FREQUENT_CHECK;
2171 2661
2172 ++timercnt; 2662 ++timercnt;
2173 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2663 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2176 ANHE_at_cache (timers [ev_active (w)]); 2666 ANHE_at_cache (timers [ev_active (w)]);
2177 upheap (timers, ev_active (w)); 2667 upheap (timers, ev_active (w));
2178 2668
2179 EV_FREQUENT_CHECK; 2669 EV_FREQUENT_CHECK;
2180 2670
2181 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2671 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2182} 2672}
2183 2673
2184void noinline 2674void noinline
2185ev_timer_stop (EV_P_ ev_timer *w) 2675ev_timer_stop (EV_P_ ev_timer *w)
2186{ 2676{
… …
2191 EV_FREQUENT_CHECK; 2681 EV_FREQUENT_CHECK;
2192 2682
2193 { 2683 {
2194 int active = ev_active (w); 2684 int active = ev_active (w);
2195 2685
2196 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2686 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197 2687
2198 --timercnt; 2688 --timercnt;
2199 2689
2200 if (expect_true (active < timercnt + HEAP0)) 2690 if (expect_true (active < timercnt + HEAP0))
2201 { 2691 {
2202 timers [active] = timers [timercnt + HEAP0]; 2692 timers [active] = timers [timercnt + HEAP0];
2203 adjustheap (timers, timercnt, active); 2693 adjustheap (timers, timercnt, active);
2204 } 2694 }
2205 } 2695 }
2206 2696
2207 EV_FREQUENT_CHECK;
2208
2209 ev_at (w) -= mn_now; 2697 ev_at (w) -= mn_now;
2210 2698
2211 ev_stop (EV_A_ (W)w); 2699 ev_stop (EV_A_ (W)w);
2700
2701 EV_FREQUENT_CHECK;
2212} 2702}
2213 2703
2214void noinline 2704void noinline
2215ev_timer_again (EV_P_ ev_timer *w) 2705ev_timer_again (EV_P_ ev_timer *w)
2216{ 2706{
… …
2234 } 2724 }
2235 2725
2236 EV_FREQUENT_CHECK; 2726 EV_FREQUENT_CHECK;
2237} 2727}
2238 2728
2729ev_tstamp
2730ev_timer_remaining (EV_P_ ev_timer *w)
2731{
2732 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2733}
2734
2239#if EV_PERIODIC_ENABLE 2735#if EV_PERIODIC_ENABLE
2240void noinline 2736void noinline
2241ev_periodic_start (EV_P_ ev_periodic *w) 2737ev_periodic_start (EV_P_ ev_periodic *w)
2242{ 2738{
2243 if (expect_false (ev_is_active (w))) 2739 if (expect_false (ev_is_active (w)))
… …
2245 2741
2246 if (w->reschedule_cb) 2742 if (w->reschedule_cb)
2247 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2743 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248 else if (w->interval) 2744 else if (w->interval)
2249 { 2745 {
2250 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2746 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2251 /* this formula differs from the one in periodic_reify because we do not always round up */ 2747 /* this formula differs from the one in periodic_reify because we do not always round up */
2252 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2748 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253 } 2749 }
2254 else 2750 else
2255 ev_at (w) = w->offset; 2751 ev_at (w) = w->offset;
… …
2263 ANHE_at_cache (periodics [ev_active (w)]); 2759 ANHE_at_cache (periodics [ev_active (w)]);
2264 upheap (periodics, ev_active (w)); 2760 upheap (periodics, ev_active (w));
2265 2761
2266 EV_FREQUENT_CHECK; 2762 EV_FREQUENT_CHECK;
2267 2763
2268 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2764 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2269} 2765}
2270 2766
2271void noinline 2767void noinline
2272ev_periodic_stop (EV_P_ ev_periodic *w) 2768ev_periodic_stop (EV_P_ ev_periodic *w)
2273{ 2769{
… …
2278 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
2279 2775
2280 { 2776 {
2281 int active = ev_active (w); 2777 int active = ev_active (w);
2282 2778
2283 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2779 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284 2780
2285 --periodiccnt; 2781 --periodiccnt;
2286 2782
2287 if (expect_true (active < periodiccnt + HEAP0)) 2783 if (expect_true (active < periodiccnt + HEAP0))
2288 { 2784 {
2289 periodics [active] = periodics [periodiccnt + HEAP0]; 2785 periodics [active] = periodics [periodiccnt + HEAP0];
2290 adjustheap (periodics, periodiccnt, active); 2786 adjustheap (periodics, periodiccnt, active);
2291 } 2787 }
2292 } 2788 }
2293 2789
2294 EV_FREQUENT_CHECK;
2295
2296 ev_stop (EV_A_ (W)w); 2790 ev_stop (EV_A_ (W)w);
2791
2792 EV_FREQUENT_CHECK;
2297} 2793}
2298 2794
2299void noinline 2795void noinline
2300ev_periodic_again (EV_P_ ev_periodic *w) 2796ev_periodic_again (EV_P_ ev_periodic *w)
2301{ 2797{
… …
2307 2803
2308#ifndef SA_RESTART 2804#ifndef SA_RESTART
2309# define SA_RESTART 0 2805# define SA_RESTART 0
2310#endif 2806#endif
2311 2807
2808#if EV_SIGNAL_ENABLE
2809
2312void noinline 2810void noinline
2313ev_signal_start (EV_P_ ev_signal *w) 2811ev_signal_start (EV_P_ ev_signal *w)
2314{ 2812{
2315#if EV_MULTIPLICITY
2316 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317#endif
2318 if (expect_false (ev_is_active (w))) 2813 if (expect_false (ev_is_active (w)))
2319 return; 2814 return;
2320 2815
2321 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2816 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2322 2817
2323 evpipe_init (EV_A); 2818#if EV_MULTIPLICITY
2819 assert (("libev: a signal must not be attached to two different loops",
2820 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2324 2821
2325 EV_FREQUENT_CHECK; 2822 signals [w->signum - 1].loop = EV_A;
2823#endif
2326 2824
2825 EV_FREQUENT_CHECK;
2826
2827#if EV_USE_SIGNALFD
2828 if (sigfd == -2)
2327 { 2829 {
2328#ifndef _WIN32 2830 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2329 sigset_t full, prev; 2831 if (sigfd < 0 && errno == EINVAL)
2330 sigfillset (&full); 2832 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2331 sigprocmask (SIG_SETMASK, &full, &prev);
2332#endif
2333 2833
2334 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2834 if (sigfd >= 0)
2835 {
2836 fd_intern (sigfd); /* doing it twice will not hurt */
2335 2837
2336#ifndef _WIN32 2838 sigemptyset (&sigfd_set);
2337 sigprocmask (SIG_SETMASK, &prev, 0); 2839
2338#endif 2840 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2841 ev_set_priority (&sigfd_w, EV_MAXPRI);
2842 ev_io_start (EV_A_ &sigfd_w);
2843 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2844 }
2339 } 2845 }
2846
2847 if (sigfd >= 0)
2848 {
2849 /* TODO: check .head */
2850 sigaddset (&sigfd_set, w->signum);
2851 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2852
2853 signalfd (sigfd, &sigfd_set, 0);
2854 }
2855#endif
2340 2856
2341 ev_start (EV_A_ (W)w, 1); 2857 ev_start (EV_A_ (W)w, 1);
2342 wlist_add (&signals [w->signum - 1].head, (WL)w); 2858 wlist_add (&signals [w->signum - 1].head, (WL)w);
2343 2859
2344 if (!((WL)w)->next) 2860 if (!((WL)w)->next)
2861# if EV_USE_SIGNALFD
2862 if (sigfd < 0) /*TODO*/
2863# endif
2345 { 2864 {
2346#if _WIN32 2865# ifdef _WIN32
2866 evpipe_init (EV_A);
2867
2347 signal (w->signum, ev_sighandler); 2868 signal (w->signum, ev_sighandler);
2348#else 2869# else
2349 struct sigaction sa; 2870 struct sigaction sa;
2871
2872 evpipe_init (EV_A);
2873
2350 sa.sa_handler = ev_sighandler; 2874 sa.sa_handler = ev_sighandler;
2351 sigfillset (&sa.sa_mask); 2875 sigfillset (&sa.sa_mask);
2352 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2876 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2353 sigaction (w->signum, &sa, 0); 2877 sigaction (w->signum, &sa, 0);
2878
2879 sigemptyset (&sa.sa_mask);
2880 sigaddset (&sa.sa_mask, w->signum);
2881 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2354#endif 2882#endif
2355 } 2883 }
2356 2884
2357 EV_FREQUENT_CHECK; 2885 EV_FREQUENT_CHECK;
2358} 2886}
2359 2887
2360void noinline 2888void noinline
… …
2368 2896
2369 wlist_del (&signals [w->signum - 1].head, (WL)w); 2897 wlist_del (&signals [w->signum - 1].head, (WL)w);
2370 ev_stop (EV_A_ (W)w); 2898 ev_stop (EV_A_ (W)w);
2371 2899
2372 if (!signals [w->signum - 1].head) 2900 if (!signals [w->signum - 1].head)
2901 {
2902#if EV_MULTIPLICITY
2903 signals [w->signum - 1].loop = 0; /* unattach from signal */
2904#endif
2905#if EV_USE_SIGNALFD
2906 if (sigfd >= 0)
2907 {
2908 sigset_t ss;
2909
2910 sigemptyset (&ss);
2911 sigaddset (&ss, w->signum);
2912 sigdelset (&sigfd_set, w->signum);
2913
2914 signalfd (sigfd, &sigfd_set, 0);
2915 sigprocmask (SIG_UNBLOCK, &ss, 0);
2916 }
2917 else
2918#endif
2373 signal (w->signum, SIG_DFL); 2919 signal (w->signum, SIG_DFL);
2920 }
2374 2921
2375 EV_FREQUENT_CHECK; 2922 EV_FREQUENT_CHECK;
2376} 2923}
2924
2925#endif
2926
2927#if EV_CHILD_ENABLE
2377 2928
2378void 2929void
2379ev_child_start (EV_P_ ev_child *w) 2930ev_child_start (EV_P_ ev_child *w)
2380{ 2931{
2381#if EV_MULTIPLICITY 2932#if EV_MULTIPLICITY
2382 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2933 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2383#endif 2934#endif
2384 if (expect_false (ev_is_active (w))) 2935 if (expect_false (ev_is_active (w)))
2385 return; 2936 return;
2386 2937
2387 EV_FREQUENT_CHECK; 2938 EV_FREQUENT_CHECK;
2388 2939
2389 ev_start (EV_A_ (W)w, 1); 2940 ev_start (EV_A_ (W)w, 1);
2390 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2941 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2391 2942
2392 EV_FREQUENT_CHECK; 2943 EV_FREQUENT_CHECK;
2393} 2944}
2394 2945
2395void 2946void
… …
2399 if (expect_false (!ev_is_active (w))) 2950 if (expect_false (!ev_is_active (w)))
2400 return; 2951 return;
2401 2952
2402 EV_FREQUENT_CHECK; 2953 EV_FREQUENT_CHECK;
2403 2954
2404 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2955 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2405 ev_stop (EV_A_ (W)w); 2956 ev_stop (EV_A_ (W)w);
2406 2957
2407 EV_FREQUENT_CHECK; 2958 EV_FREQUENT_CHECK;
2408} 2959}
2960
2961#endif
2409 2962
2410#if EV_STAT_ENABLE 2963#if EV_STAT_ENABLE
2411 2964
2412# ifdef _WIN32 2965# ifdef _WIN32
2413# undef lstat 2966# undef lstat
2414# define lstat(a,b) _stati64 (a,b) 2967# define lstat(a,b) _stati64 (a,b)
2415# endif 2968# endif
2416 2969
2417#define DEF_STAT_INTERVAL 5.0074891 2970#define DEF_STAT_INTERVAL 5.0074891
2971#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2418#define MIN_STAT_INTERVAL 0.1074891 2972#define MIN_STAT_INTERVAL 0.1074891
2419 2973
2420static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2974static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421 2975
2422#if EV_USE_INOTIFY 2976#if EV_USE_INOTIFY
2423# define EV_INOTIFY_BUFSIZE 8192 2977
2978/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2979# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2424 2980
2425static void noinline 2981static void noinline
2426infy_add (EV_P_ ev_stat *w) 2982infy_add (EV_P_ ev_stat *w)
2427{ 2983{
2428 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); 2984 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);
2429 2985
2430 if (w->wd < 0) 2986 if (w->wd >= 0)
2987 {
2988 struct statfs sfs;
2989
2990 /* now local changes will be tracked by inotify, but remote changes won't */
2991 /* unless the filesystem is known to be local, we therefore still poll */
2992 /* also do poll on <2.6.25, but with normal frequency */
2993
2994 if (!fs_2625)
2995 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2996 else if (!statfs (w->path, &sfs)
2997 && (sfs.f_type == 0x1373 /* devfs */
2998 || sfs.f_type == 0xEF53 /* ext2/3 */
2999 || sfs.f_type == 0x3153464a /* jfs */
3000 || sfs.f_type == 0x52654973 /* reiser3 */
3001 || sfs.f_type == 0x01021994 /* tempfs */
3002 || sfs.f_type == 0x58465342 /* xfs */))
3003 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3004 else
3005 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2431 { 3006 }
2432 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3007 else
3008 {
3009 /* can't use inotify, continue to stat */
3010 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2433 3011
2434 /* monitor some parent directory for speedup hints */ 3012 /* if path is not there, monitor some parent directory for speedup hints */
2435 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3013 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2436 /* but an efficiency issue only */ 3014 /* but an efficiency issue only */
2437 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3015 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438 { 3016 {
2439 char path [4096]; 3017 char path [4096];
2440 strcpy (path, w->path); 3018 strcpy (path, w->path);
… …
2444 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3022 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3023 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446 3024
2447 char *pend = strrchr (path, '/'); 3025 char *pend = strrchr (path, '/');
2448 3026
2449 if (!pend) 3027 if (!pend || pend == path)
2450 break; /* whoops, no '/', complain to your admin */ 3028 break;
2451 3029
2452 *pend = 0; 3030 *pend = 0;
2453 w->wd = inotify_add_watch (fs_fd, path, mask); 3031 w->wd = inotify_add_watch (fs_fd, path, mask);
2454 } 3032 }
2455 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3033 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456 } 3034 }
2457 } 3035 }
2458 else
2459 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460 3036
2461 if (w->wd >= 0) 3037 if (w->wd >= 0)
2462 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3038 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3039
3040 /* now re-arm timer, if required */
3041 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3042 ev_timer_again (EV_A_ &w->timer);
3043 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2463} 3044}
2464 3045
2465static void noinline 3046static void noinline
2466infy_del (EV_P_ ev_stat *w) 3047infy_del (EV_P_ ev_stat *w)
2467{ 3048{
… …
2470 3051
2471 if (wd < 0) 3052 if (wd < 0)
2472 return; 3053 return;
2473 3054
2474 w->wd = -2; 3055 w->wd = -2;
2475 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3056 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2476 wlist_del (&fs_hash [slot].head, (WL)w); 3057 wlist_del (&fs_hash [slot].head, (WL)w);
2477 3058
2478 /* remove this watcher, if others are watching it, they will rearm */ 3059 /* remove this watcher, if others are watching it, they will rearm */
2479 inotify_rm_watch (fs_fd, wd); 3060 inotify_rm_watch (fs_fd, wd);
2480} 3061}
2481 3062
2482static void noinline 3063static void noinline
2483infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3064infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484{ 3065{
2485 if (slot < 0) 3066 if (slot < 0)
2486 /* overflow, need to check for all hahs slots */ 3067 /* overflow, need to check for all hash slots */
2487 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3068 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2488 infy_wd (EV_A_ slot, wd, ev); 3069 infy_wd (EV_A_ slot, wd, ev);
2489 else 3070 else
2490 { 3071 {
2491 WL w_; 3072 WL w_;
2492 3073
2493 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3074 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2494 { 3075 {
2495 ev_stat *w = (ev_stat *)w_; 3076 ev_stat *w = (ev_stat *)w_;
2496 w_ = w_->next; /* lets us remove this watcher and all before it */ 3077 w_ = w_->next; /* lets us remove this watcher and all before it */
2497 3078
2498 if (w->wd == wd || wd == -1) 3079 if (w->wd == wd || wd == -1)
2499 { 3080 {
2500 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3081 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501 { 3082 {
3083 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2502 w->wd = -1; 3084 w->wd = -1;
2503 infy_add (EV_A_ w); /* re-add, no matter what */ 3085 infy_add (EV_A_ w); /* re-add, no matter what */
2504 } 3086 }
2505 3087
2506 stat_timer_cb (EV_A_ &w->timer, 0); 3088 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2511 3093
2512static void 3094static void
2513infy_cb (EV_P_ ev_io *w, int revents) 3095infy_cb (EV_P_ ev_io *w, int revents)
2514{ 3096{
2515 char buf [EV_INOTIFY_BUFSIZE]; 3097 char buf [EV_INOTIFY_BUFSIZE];
2516 struct inotify_event *ev = (struct inotify_event *)buf;
2517 int ofs; 3098 int ofs;
2518 int len = read (fs_fd, buf, sizeof (buf)); 3099 int len = read (fs_fd, buf, sizeof (buf));
2519 3100
2520 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3101 for (ofs = 0; ofs < len; )
3102 {
3103 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2521 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3104 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3105 ofs += sizeof (struct inotify_event) + ev->len;
3106 }
2522} 3107}
2523 3108
2524void inline_size 3109inline_size void
3110ev_check_2625 (EV_P)
3111{
3112 /* kernels < 2.6.25 are borked
3113 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3114 */
3115 if (ev_linux_version () < 0x020619)
3116 return;
3117
3118 fs_2625 = 1;
3119}
3120
3121inline_size int
3122infy_newfd (void)
3123{
3124#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3125 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3126 if (fd >= 0)
3127 return fd;
3128#endif
3129 return inotify_init ();
3130}
3131
3132inline_size void
2525infy_init (EV_P) 3133infy_init (EV_P)
2526{ 3134{
2527 if (fs_fd != -2) 3135 if (fs_fd != -2)
2528 return; 3136 return;
2529 3137
3138 fs_fd = -1;
3139
3140 ev_check_2625 (EV_A);
3141
2530 fs_fd = inotify_init (); 3142 fs_fd = infy_newfd ();
2531 3143
2532 if (fs_fd >= 0) 3144 if (fs_fd >= 0)
2533 { 3145 {
3146 fd_intern (fs_fd);
2534 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3147 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2535 ev_set_priority (&fs_w, EV_MAXPRI); 3148 ev_set_priority (&fs_w, EV_MAXPRI);
2536 ev_io_start (EV_A_ &fs_w); 3149 ev_io_start (EV_A_ &fs_w);
3150 ev_unref (EV_A);
2537 } 3151 }
2538} 3152}
2539 3153
2540void inline_size 3154inline_size void
2541infy_fork (EV_P) 3155infy_fork (EV_P)
2542{ 3156{
2543 int slot; 3157 int slot;
2544 3158
2545 if (fs_fd < 0) 3159 if (fs_fd < 0)
2546 return; 3160 return;
2547 3161
3162 ev_ref (EV_A);
3163 ev_io_stop (EV_A_ &fs_w);
2548 close (fs_fd); 3164 close (fs_fd);
2549 fs_fd = inotify_init (); 3165 fs_fd = infy_newfd ();
2550 3166
3167 if (fs_fd >= 0)
3168 {
3169 fd_intern (fs_fd);
3170 ev_io_set (&fs_w, fs_fd, EV_READ);
3171 ev_io_start (EV_A_ &fs_w);
3172 ev_unref (EV_A);
3173 }
3174
2551 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3175 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2552 { 3176 {
2553 WL w_ = fs_hash [slot].head; 3177 WL w_ = fs_hash [slot].head;
2554 fs_hash [slot].head = 0; 3178 fs_hash [slot].head = 0;
2555 3179
2556 while (w_) 3180 while (w_)
… …
2561 w->wd = -1; 3185 w->wd = -1;
2562 3186
2563 if (fs_fd >= 0) 3187 if (fs_fd >= 0)
2564 infy_add (EV_A_ w); /* re-add, no matter what */ 3188 infy_add (EV_A_ w); /* re-add, no matter what */
2565 else 3189 else
3190 {
3191 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3192 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2566 ev_timer_start (EV_A_ &w->timer); 3193 ev_timer_again (EV_A_ &w->timer);
3194 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3195 }
2567 } 3196 }
2568
2569 } 3197 }
2570} 3198}
2571 3199
3200#endif
3201
3202#ifdef _WIN32
3203# define EV_LSTAT(p,b) _stati64 (p, b)
3204#else
3205# define EV_LSTAT(p,b) lstat (p, b)
2572#endif 3206#endif
2573 3207
2574void 3208void
2575ev_stat_stat (EV_P_ ev_stat *w) 3209ev_stat_stat (EV_P_ ev_stat *w)
2576{ 3210{
… …
2583static void noinline 3217static void noinline
2584stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3218stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2585{ 3219{
2586 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3220 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2587 3221
2588 /* we copy this here each the time so that */ 3222 ev_statdata prev = w->attr;
2589 /* prev has the old value when the callback gets invoked */
2590 w->prev = w->attr;
2591 ev_stat_stat (EV_A_ w); 3223 ev_stat_stat (EV_A_ w);
2592 3224
2593 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3225 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2594 if ( 3226 if (
2595 w->prev.st_dev != w->attr.st_dev 3227 prev.st_dev != w->attr.st_dev
2596 || w->prev.st_ino != w->attr.st_ino 3228 || prev.st_ino != w->attr.st_ino
2597 || w->prev.st_mode != w->attr.st_mode 3229 || prev.st_mode != w->attr.st_mode
2598 || w->prev.st_nlink != w->attr.st_nlink 3230 || prev.st_nlink != w->attr.st_nlink
2599 || w->prev.st_uid != w->attr.st_uid 3231 || prev.st_uid != w->attr.st_uid
2600 || w->prev.st_gid != w->attr.st_gid 3232 || prev.st_gid != w->attr.st_gid
2601 || w->prev.st_rdev != w->attr.st_rdev 3233 || prev.st_rdev != w->attr.st_rdev
2602 || w->prev.st_size != w->attr.st_size 3234 || prev.st_size != w->attr.st_size
2603 || w->prev.st_atime != w->attr.st_atime 3235 || prev.st_atime != w->attr.st_atime
2604 || w->prev.st_mtime != w->attr.st_mtime 3236 || prev.st_mtime != w->attr.st_mtime
2605 || w->prev.st_ctime != w->attr.st_ctime 3237 || prev.st_ctime != w->attr.st_ctime
2606 ) { 3238 ) {
3239 /* we only update w->prev on actual differences */
3240 /* in case we test more often than invoke the callback, */
3241 /* to ensure that prev is always different to attr */
3242 w->prev = prev;
3243
2607 #if EV_USE_INOTIFY 3244 #if EV_USE_INOTIFY
3245 if (fs_fd >= 0)
3246 {
2608 infy_del (EV_A_ w); 3247 infy_del (EV_A_ w);
2609 infy_add (EV_A_ w); 3248 infy_add (EV_A_ w);
2610 ev_stat_stat (EV_A_ w); /* avoid race... */ 3249 ev_stat_stat (EV_A_ w); /* avoid race... */
3250 }
2611 #endif 3251 #endif
2612 3252
2613 ev_feed_event (EV_A_ w, EV_STAT); 3253 ev_feed_event (EV_A_ w, EV_STAT);
2614 } 3254 }
2615} 3255}
… …
2618ev_stat_start (EV_P_ ev_stat *w) 3258ev_stat_start (EV_P_ ev_stat *w)
2619{ 3259{
2620 if (expect_false (ev_is_active (w))) 3260 if (expect_false (ev_is_active (w)))
2621 return; 3261 return;
2622 3262
2623 /* since we use memcmp, we need to clear any padding data etc. */
2624 memset (&w->prev, 0, sizeof (ev_statdata));
2625 memset (&w->attr, 0, sizeof (ev_statdata));
2626
2627 ev_stat_stat (EV_A_ w); 3263 ev_stat_stat (EV_A_ w);
2628 3264
3265 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2629 if (w->interval < MIN_STAT_INTERVAL) 3266 w->interval = MIN_STAT_INTERVAL;
2630 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2631 3267
2632 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3268 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2633 ev_set_priority (&w->timer, ev_priority (w)); 3269 ev_set_priority (&w->timer, ev_priority (w));
2634 3270
2635#if EV_USE_INOTIFY 3271#if EV_USE_INOTIFY
2636 infy_init (EV_A); 3272 infy_init (EV_A);
2637 3273
2638 if (fs_fd >= 0) 3274 if (fs_fd >= 0)
2639 infy_add (EV_A_ w); 3275 infy_add (EV_A_ w);
2640 else 3276 else
2641#endif 3277#endif
3278 {
2642 ev_timer_start (EV_A_ &w->timer); 3279 ev_timer_again (EV_A_ &w->timer);
3280 ev_unref (EV_A);
3281 }
2643 3282
2644 ev_start (EV_A_ (W)w, 1); 3283 ev_start (EV_A_ (W)w, 1);
2645 3284
2646 EV_FREQUENT_CHECK; 3285 EV_FREQUENT_CHECK;
2647} 3286}
… …
2656 EV_FREQUENT_CHECK; 3295 EV_FREQUENT_CHECK;
2657 3296
2658#if EV_USE_INOTIFY 3297#if EV_USE_INOTIFY
2659 infy_del (EV_A_ w); 3298 infy_del (EV_A_ w);
2660#endif 3299#endif
3300
3301 if (ev_is_active (&w->timer))
3302 {
3303 ev_ref (EV_A);
2661 ev_timer_stop (EV_A_ &w->timer); 3304 ev_timer_stop (EV_A_ &w->timer);
3305 }
2662 3306
2663 ev_stop (EV_A_ (W)w); 3307 ev_stop (EV_A_ (W)w);
2664 3308
2665 EV_FREQUENT_CHECK; 3309 EV_FREQUENT_CHECK;
2666} 3310}
… …
2711 3355
2712 EV_FREQUENT_CHECK; 3356 EV_FREQUENT_CHECK;
2713} 3357}
2714#endif 3358#endif
2715 3359
3360#if EV_PREPARE_ENABLE
2716void 3361void
2717ev_prepare_start (EV_P_ ev_prepare *w) 3362ev_prepare_start (EV_P_ ev_prepare *w)
2718{ 3363{
2719 if (expect_false (ev_is_active (w))) 3364 if (expect_false (ev_is_active (w)))
2720 return; 3365 return;
… …
2746 3391
2747 ev_stop (EV_A_ (W)w); 3392 ev_stop (EV_A_ (W)w);
2748 3393
2749 EV_FREQUENT_CHECK; 3394 EV_FREQUENT_CHECK;
2750} 3395}
3396#endif
2751 3397
3398#if EV_CHECK_ENABLE
2752void 3399void
2753ev_check_start (EV_P_ ev_check *w) 3400ev_check_start (EV_P_ ev_check *w)
2754{ 3401{
2755 if (expect_false (ev_is_active (w))) 3402 if (expect_false (ev_is_active (w)))
2756 return; 3403 return;
… …
2782 3429
2783 ev_stop (EV_A_ (W)w); 3430 ev_stop (EV_A_ (W)w);
2784 3431
2785 EV_FREQUENT_CHECK; 3432 EV_FREQUENT_CHECK;
2786} 3433}
3434#endif
2787 3435
2788#if EV_EMBED_ENABLE 3436#if EV_EMBED_ENABLE
2789void noinline 3437void noinline
2790ev_embed_sweep (EV_P_ ev_embed *w) 3438ev_embed_sweep (EV_P_ ev_embed *w)
2791{ 3439{
2792 ev_loop (w->other, EVLOOP_NONBLOCK); 3440 ev_run (w->other, EVRUN_NOWAIT);
2793} 3441}
2794 3442
2795static void 3443static void
2796embed_io_cb (EV_P_ ev_io *io, int revents) 3444embed_io_cb (EV_P_ ev_io *io, int revents)
2797{ 3445{
2798 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3446 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2799 3447
2800 if (ev_cb (w)) 3448 if (ev_cb (w))
2801 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3449 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2802 else 3450 else
2803 ev_loop (w->other, EVLOOP_NONBLOCK); 3451 ev_run (w->other, EVRUN_NOWAIT);
2804} 3452}
2805 3453
2806static void 3454static void
2807embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3455embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2808{ 3456{
2809 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3457 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2810 3458
2811 { 3459 {
2812 struct ev_loop *loop = w->other; 3460 EV_P = w->other;
2813 3461
2814 while (fdchangecnt) 3462 while (fdchangecnt)
2815 { 3463 {
2816 fd_reify (EV_A); 3464 fd_reify (EV_A);
2817 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3465 ev_run (EV_A_ EVRUN_NOWAIT);
2818 } 3466 }
2819 } 3467 }
3468}
3469
3470static void
3471embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3472{
3473 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3474
3475 ev_embed_stop (EV_A_ w);
3476
3477 {
3478 EV_P = w->other;
3479
3480 ev_loop_fork (EV_A);
3481 ev_run (EV_A_ EVRUN_NOWAIT);
3482 }
3483
3484 ev_embed_start (EV_A_ w);
2820} 3485}
2821 3486
2822#if 0 3487#if 0
2823static void 3488static void
2824embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3489embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2832{ 3497{
2833 if (expect_false (ev_is_active (w))) 3498 if (expect_false (ev_is_active (w)))
2834 return; 3499 return;
2835 3500
2836 { 3501 {
2837 struct ev_loop *loop = w->other; 3502 EV_P = w->other;
2838 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3503 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2839 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3504 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2840 } 3505 }
2841 3506
2842 EV_FREQUENT_CHECK; 3507 EV_FREQUENT_CHECK;
2843 3508
… …
2846 3511
2847 ev_prepare_init (&w->prepare, embed_prepare_cb); 3512 ev_prepare_init (&w->prepare, embed_prepare_cb);
2848 ev_set_priority (&w->prepare, EV_MINPRI); 3513 ev_set_priority (&w->prepare, EV_MINPRI);
2849 ev_prepare_start (EV_A_ &w->prepare); 3514 ev_prepare_start (EV_A_ &w->prepare);
2850 3515
3516 ev_fork_init (&w->fork, embed_fork_cb);
3517 ev_fork_start (EV_A_ &w->fork);
3518
2851 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3519 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2852 3520
2853 ev_start (EV_A_ (W)w, 1); 3521 ev_start (EV_A_ (W)w, 1);
2854 3522
2855 EV_FREQUENT_CHECK; 3523 EV_FREQUENT_CHECK;
… …
2862 if (expect_false (!ev_is_active (w))) 3530 if (expect_false (!ev_is_active (w)))
2863 return; 3531 return;
2864 3532
2865 EV_FREQUENT_CHECK; 3533 EV_FREQUENT_CHECK;
2866 3534
2867 ev_io_stop (EV_A_ &w->io); 3535 ev_io_stop (EV_A_ &w->io);
2868 ev_prepare_stop (EV_A_ &w->prepare); 3536 ev_prepare_stop (EV_A_ &w->prepare);
3537 ev_fork_stop (EV_A_ &w->fork);
2869 3538
2870 ev_stop (EV_A_ (W)w); 3539 ev_stop (EV_A_ (W)w);
2871 3540
2872 EV_FREQUENT_CHECK; 3541 EV_FREQUENT_CHECK;
2873} 3542}
… …
2916ev_async_start (EV_P_ ev_async *w) 3585ev_async_start (EV_P_ ev_async *w)
2917{ 3586{
2918 if (expect_false (ev_is_active (w))) 3587 if (expect_false (ev_is_active (w)))
2919 return; 3588 return;
2920 3589
3590 w->sent = 0;
3591
2921 evpipe_init (EV_A); 3592 evpipe_init (EV_A);
2922 3593
2923 EV_FREQUENT_CHECK; 3594 EV_FREQUENT_CHECK;
2924 3595
2925 ev_start (EV_A_ (W)w, ++asynccnt); 3596 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2952 3623
2953void 3624void
2954ev_async_send (EV_P_ ev_async *w) 3625ev_async_send (EV_P_ ev_async *w)
2955{ 3626{
2956 w->sent = 1; 3627 w->sent = 1;
2957 evpipe_write (EV_A_ &gotasync); 3628 evpipe_write (EV_A_ &async_pending);
2958} 3629}
2959#endif 3630#endif
2960 3631
2961/*****************************************************************************/ 3632/*****************************************************************************/
2962 3633
… …
2972once_cb (EV_P_ struct ev_once *once, int revents) 3643once_cb (EV_P_ struct ev_once *once, int revents)
2973{ 3644{
2974 void (*cb)(int revents, void *arg) = once->cb; 3645 void (*cb)(int revents, void *arg) = once->cb;
2975 void *arg = once->arg; 3646 void *arg = once->arg;
2976 3647
2977 ev_io_stop (EV_A_ &once->io); 3648 ev_io_stop (EV_A_ &once->io);
2978 ev_timer_stop (EV_A_ &once->to); 3649 ev_timer_stop (EV_A_ &once->to);
2979 ev_free (once); 3650 ev_free (once);
2980 3651
2981 cb (revents, arg); 3652 cb (revents, arg);
2982} 3653}
2983 3654
2984static void 3655static void
2985once_cb_io (EV_P_ ev_io *w, int revents) 3656once_cb_io (EV_P_ ev_io *w, int revents)
2986{ 3657{
2987 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3658 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3659
3660 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2988} 3661}
2989 3662
2990static void 3663static void
2991once_cb_to (EV_P_ ev_timer *w, int revents) 3664once_cb_to (EV_P_ ev_timer *w, int revents)
2992{ 3665{
2993 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3666 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3667
3668 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2994} 3669}
2995 3670
2996void 3671void
2997ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3672ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2998{ 3673{
2999 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3674 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3000 3675
3001 if (expect_false (!once)) 3676 if (expect_false (!once))
3002 { 3677 {
3003 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3678 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3004 return; 3679 return;
3005 } 3680 }
3006 3681
3007 once->cb = cb; 3682 once->cb = cb;
3008 once->arg = arg; 3683 once->arg = arg;
… …
3020 ev_timer_set (&once->to, timeout, 0.); 3695 ev_timer_set (&once->to, timeout, 0.);
3021 ev_timer_start (EV_A_ &once->to); 3696 ev_timer_start (EV_A_ &once->to);
3022 } 3697 }
3023} 3698}
3024 3699
3700/*****************************************************************************/
3701
3702#if EV_WALK_ENABLE
3703void
3704ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3705{
3706 int i, j;
3707 ev_watcher_list *wl, *wn;
3708
3709 if (types & (EV_IO | EV_EMBED))
3710 for (i = 0; i < anfdmax; ++i)
3711 for (wl = anfds [i].head; wl; )
3712 {
3713 wn = wl->next;
3714
3715#if EV_EMBED_ENABLE
3716 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3717 {
3718 if (types & EV_EMBED)
3719 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3720 }
3721 else
3722#endif
3723#if EV_USE_INOTIFY
3724 if (ev_cb ((ev_io *)wl) == infy_cb)
3725 ;
3726 else
3727#endif
3728 if ((ev_io *)wl != &pipe_w)
3729 if (types & EV_IO)
3730 cb (EV_A_ EV_IO, wl);
3731
3732 wl = wn;
3733 }
3734
3735 if (types & (EV_TIMER | EV_STAT))
3736 for (i = timercnt + HEAP0; i-- > HEAP0; )
3737#if EV_STAT_ENABLE
3738 /*TODO: timer is not always active*/
3739 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3740 {
3741 if (types & EV_STAT)
3742 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3743 }
3744 else
3745#endif
3746 if (types & EV_TIMER)
3747 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3748
3749#if EV_PERIODIC_ENABLE
3750 if (types & EV_PERIODIC)
3751 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3752 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3753#endif
3754
3755#if EV_IDLE_ENABLE
3756 if (types & EV_IDLE)
3757 for (j = NUMPRI; i--; )
3758 for (i = idlecnt [j]; i--; )
3759 cb (EV_A_ EV_IDLE, idles [j][i]);
3760#endif
3761
3762#if EV_FORK_ENABLE
3763 if (types & EV_FORK)
3764 for (i = forkcnt; i--; )
3765 if (ev_cb (forks [i]) != embed_fork_cb)
3766 cb (EV_A_ EV_FORK, forks [i]);
3767#endif
3768
3769#if EV_ASYNC_ENABLE
3770 if (types & EV_ASYNC)
3771 for (i = asynccnt; i--; )
3772 cb (EV_A_ EV_ASYNC, asyncs [i]);
3773#endif
3774
3775#if EV_PREPARE_ENABLE
3776 if (types & EV_PREPARE)
3777 for (i = preparecnt; i--; )
3778# if EV_EMBED_ENABLE
3779 if (ev_cb (prepares [i]) != embed_prepare_cb)
3780# endif
3781 cb (EV_A_ EV_PREPARE, prepares [i]);
3782#endif
3783
3784#if EV_CHECK_ENABLE
3785 if (types & EV_CHECK)
3786 for (i = checkcnt; i--; )
3787 cb (EV_A_ EV_CHECK, checks [i]);
3788#endif
3789
3790#if EV_SIGNAL_ENABLE
3791 if (types & EV_SIGNAL)
3792 for (i = 0; i < EV_NSIG - 1; ++i)
3793 for (wl = signals [i].head; wl; )
3794 {
3795 wn = wl->next;
3796 cb (EV_A_ EV_SIGNAL, wl);
3797 wl = wn;
3798 }
3799#endif
3800
3801#if EV_CHILD_ENABLE
3802 if (types & EV_CHILD)
3803 for (i = (EV_PID_HASHSIZE); i--; )
3804 for (wl = childs [i]; wl; )
3805 {
3806 wn = wl->next;
3807 cb (EV_A_ EV_CHILD, wl);
3808 wl = wn;
3809 }
3810#endif
3811/* EV_STAT 0x00001000 /* stat data changed */
3812/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3813}
3814#endif
3815
3025#if EV_MULTIPLICITY 3816#if EV_MULTIPLICITY
3026 #include "ev_wrap.h" 3817 #include "ev_wrap.h"
3027#endif 3818#endif
3028 3819
3029#ifdef __cplusplus 3820EV_CPP(})
3030}
3031#endif
3032 3821

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