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Comparing libev/ev.c (file contents):
Revision 1.264 by root, Mon Oct 13 23:20:12 2008 UTC vs.
Revision 1.363 by root, Sun Oct 24 19:38:20 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
130# endif 157# endif
131 158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
… …
160# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 192# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
164# endif 195# endif
196# undef EV_AVOID_STDIO
165#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
166 206
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
236
237#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else
241# define EV_USE_CLOCK_SYSCALL 0
242# endif
243#endif
168 244
169#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 248# else
173# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
174# endif 250# endif
175#endif 251#endif
176 252
177#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 255#endif
180 256
181#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 260# else
185# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
186# endif 262# endif
187#endif 263#endif
188 264
189#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 267#endif
192 268
193#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
194# ifdef _WIN32 270# ifdef _WIN32
195# define EV_USE_POLL 0 271# define EV_USE_POLL 0
196# else 272# else
197# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 274# endif
199#endif 275#endif
200 276
201#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 280# else
205# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
206# endif 282# endif
207#endif 283#endif
208 284
… …
214# define EV_USE_PORT 0 290# define EV_USE_PORT 0
215#endif 291#endif
216 292
217#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 296# else
221# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
222# endif 298# endif
223#endif 299#endif
224 300
225#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 303#endif
232 304
233#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 307#endif
240 308
241#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 312# else
245# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
314# endif
315#endif
316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
246# endif 322# endif
247#endif 323#endif
248 324
249#if 0 /* debugging */ 325#if 0 /* debugging */
250# define EV_VERIFY 3 326# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
253#endif 329#endif
254 330
255#ifndef EV_VERIFY 331#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 333#endif
258 334
259#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 337#endif
262 338
263#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
265#endif 355#endif
266 356
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
268 364
269#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
272#endif 368#endif
… …
286# include <sys/select.h> 382# include <sys/select.h>
287# endif 383# endif
288#endif 384#endif
289 385
290#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
291# include <sys/utsname.h> 387# include <sys/statfs.h>
292# include <sys/inotify.h> 388# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 392# define EV_USE_INOTIFY 0
… …
302#endif 398#endif
303 399
304#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
305/* 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 */
306# include <stdint.h> 402# include <stdint.h>
307# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
308extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
309# endif 405# endif
310int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 407# ifdef O_CLOEXEC
312} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
313# 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};
314#endif 436#endif
315 437
316/**/ 438/**/
317 439
318#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 442#else
321# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
322#endif 444#endif
323 445
324/* 446/*
… …
331 */ 453 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
333 455
334#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) */
335#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) */
336/*#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)
337 461
338#if __GNUC__ >= 4 462#if __GNUC__ >= 4
339# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
340# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
341#else 465#else
… …
348 472
349#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
351#define inline_size static inline 475#define inline_size static inline
352 476
353#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
354# 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)
355#else 487#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
361 490
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
364 493
365typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
368 497
369#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
371 500
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
372#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 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)
376#endif 519#endif
377 520
378#ifdef _WIN32 521#ifdef _WIN32
379# include "ev_win32.c" 522# include "ev_win32.c"
380#endif 523#endif
381 524
382/*****************************************************************************/ 525/*****************************************************************************/
383 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
576
384static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
385 578
386void 579void
387ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
388{ 581{
389 syserr_cb = cb; 582 syserr_cb = cb;
390} 583}
391 584
392static void noinline 585static void noinline
393syserr (const char *msg) 586ev_syserr (const char *msg)
394{ 587{
395 if (!msg) 588 if (!msg)
396 msg = "(libev) system error"; 589 msg = "(libev) system error";
397 590
398 if (syserr_cb) 591 if (syserr_cb)
399 syserr_cb (msg); 592 syserr_cb (msg);
400 else 593 else
401 { 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
402 perror (msg); 603 perror (msg);
604#endif
403 abort (); 605 abort ();
404 } 606 }
405} 607}
406 608
407static void * 609static void *
408ev_realloc_emul (void *ptr, long size) 610ev_realloc_emul (void *ptr, long size)
409{ 611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
410 /* some systems, notably openbsd and darwin, fail to properly 615 /* some systems, notably openbsd and darwin, fail to properly
411 * 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
412 * the single unix specification, so work around them here. 617 * the single unix specification, so work around them here.
413 */ 618 */
414 619
415 if (size) 620 if (size)
416 return realloc (ptr, size); 621 return realloc (ptr, size);
417 622
418 free (ptr); 623 free (ptr);
419 return 0; 624 return 0;
625#endif
420} 626}
421 627
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
423 629
424void 630void
… …
432{ 638{
433 ptr = alloc (ptr, size); 639 ptr = alloc (ptr, size);
434 640
435 if (!ptr && size) 641 if (!ptr && size)
436 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
438 abort (); 648 abort ();
439 } 649 }
440 650
441 return ptr; 651 return ptr;
442} 652}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
446 656
447/*****************************************************************************/ 657/*****************************************************************************/
448 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
449typedef struct 663typedef struct
450{ 664{
451 WL head; 665 WL head;
452 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 */
453 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
454#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
455 SOCKET handle; 674 SOCKET handle;
456#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
457} ANFD; 679} ANFD;
458 680
681/* stores the pending event set for a given watcher */
459typedef struct 682typedef struct
460{ 683{
461 W w; 684 W w;
462 int events; 685 int events; /* the pending event set for the given watcher */
463} ANPENDING; 686} ANPENDING;
464 687
465#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
466/* hash table entry per inotify-id */ 689/* hash table entry per inotify-id */
467typedef struct 690typedef struct
… …
470} ANFS; 693} ANFS;
471#endif 694#endif
472 695
473/* Heap Entry */ 696/* Heap Entry */
474#if EV_HEAP_CACHE_AT 697#if EV_HEAP_CACHE_AT
698 /* a heap element */
475 typedef struct { 699 typedef struct {
476 ev_tstamp at; 700 ev_tstamp at;
477 WT w; 701 WT w;
478 } ANHE; 702 } ANHE;
479 703
480 #define ANHE_w(he) (he).w /* access watcher, read-write */ 704 #define ANHE_w(he) (he).w /* access watcher, read-write */
481 #define ANHE_at(he) (he).at /* access cached at, read-only */ 705 #define ANHE_at(he) (he).at /* access cached at, read-only */
482 #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 */
483#else 707#else
708 /* a heap element */
484 typedef WT ANHE; 709 typedef WT ANHE;
485 710
486 #define ANHE_w(he) (he) 711 #define ANHE_w(he) (he)
487 #define ANHE_at(he) (he)->at 712 #define ANHE_at(he) (he)->at
488 #define ANHE_at_cache(he) 713 #define ANHE_at_cache(he)
… …
512 737
513 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
514 739
515#endif 740#endif
516 741
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
517/*****************************************************************************/ 754/*****************************************************************************/
518 755
756#ifndef EV_HAVE_EV_TIME
519ev_tstamp 757ev_tstamp
520ev_time (void) 758ev_time (void)
521{ 759{
522#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
523 struct timespec ts; 763 struct timespec ts;
524 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
525 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
526#else 766 }
767#endif
768
527 struct timeval tv; 769 struct timeval tv;
528 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
529 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
530#endif
531} 772}
773#endif
532 774
533ev_tstamp inline_size 775inline_size ev_tstamp
534get_clock (void) 776get_clock (void)
535{ 777{
536#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
537 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
538 { 780 {
… …
559 if (delay > 0.) 801 if (delay > 0.)
560 { 802 {
561#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
562 struct timespec ts; 804 struct timespec ts;
563 805
564 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
565 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
566
567 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
568#elif defined(_WIN32) 808#elif defined(_WIN32)
569 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
570#else 810#else
571 struct timeval tv; 811 struct timeval tv;
572 812
573 tv.tv_sec = (time_t)delay;
574 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
575
576 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
577 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 814 /* something not guaranteed by newer posix versions, but guaranteed */
578 /* by older ones */ 815 /* by older ones */
816 EV_TV_SET (tv, delay);
579 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
580#endif 818#endif
581 } 819 }
582} 820}
583 821
584/*****************************************************************************/ 822/*****************************************************************************/
585 823
586#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 */
587 825
588int 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
589array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
590{ 830{
591 int ncur = cur + 1; 831 int ncur = cur + 1;
592 832
593 do 833 do
… …
610array_realloc (int elem, void *base, int *cur, int cnt) 850array_realloc (int elem, void *base, int *cur, int cnt)
611{ 851{
612 *cur = array_nextsize (elem, *cur, cnt); 852 *cur = array_nextsize (elem, *cur, cnt);
613 return ev_realloc (base, elem * *cur); 853 return ev_realloc (base, elem * *cur);
614} 854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
615 858
616#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
617 if (expect_false ((cnt) > (cur))) \ 860 if (expect_false ((cnt) > (cur))) \
618 { \ 861 { \
619 int ocur_ = (cur); \ 862 int ocur_ = (cur); \
… …
631 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
632 } 875 }
633#endif 876#endif
634 877
635#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
636 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
637 880
638/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
639 888
640void noinline 889void noinline
641ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
642{ 891{
643 W w_ = (W)w; 892 W w_ = (W)w;
… …
652 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
653 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
654 } 903 }
655} 904}
656 905
657void 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
658queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
659{ 923{
660 int i; 924 int i;
661 925
662 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
663 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
664} 928}
665 929
666/*****************************************************************************/ 930/*****************************************************************************/
667 931
668void inline_size 932inline_speed void
669anfds_init (ANFD *base, int count)
670{
671 while (count--)
672 {
673 base->head = 0;
674 base->events = EV_NONE;
675 base->reify = 0;
676
677 ++base;
678 }
679}
680
681void inline_speed
682fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
683{ 934{
684 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
685 ev_io *w; 936 ev_io *w;
686 937
687 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)
… …
691 if (ev) 942 if (ev)
692 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
693 } 944 }
694} 945}
695 946
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
696void 958void
697ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
698{ 960{
699 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
700 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
701} 963}
702 964
703void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
704fd_reify (EV_P) 968fd_reify (EV_P)
705{ 969{
706 int i; 970 int i;
707 971
708 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
709 { 973 {
710 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
711 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
712 ev_io *w; 976 ev_io *w;
713 977
714 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
715 980
716 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
717 events |= (unsigned char)w->events;
718 982
719#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
720 if (events) 984 if (o_reify & EV__IOFDSET)
721 { 985 {
722 unsigned long arg; 986 unsigned long arg;
723 #ifdef EV_FD_TO_WIN32_HANDLE
724 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
725 #else
726 anfd->handle = _get_osfhandle (fd);
727 #endif
728 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
729 } 990 }
730#endif 991#endif
731 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
732 { 994 {
733 unsigned char o_events = anfd->events;
734 unsigned char o_reify = anfd->reify;
735
736 anfd->reify = 0;
737 anfd->events = events; 995 anfd->events = 0;
738 996
739 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)
740 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
741 }
742 } 1006 }
743 1007
744 fdchangecnt = 0; 1008 fdchangecnt = 0;
745} 1009}
746 1010
747void inline_size 1011/* something about the given fd changed */
1012inline_size void
748fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
749{ 1014{
750 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
751 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
752 1017
… …
756 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
757 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
758 } 1023 }
759} 1024}
760 1025
761void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
762fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
763{ 1029{
764 ev_io *w; 1030 ev_io *w;
765 1031
766 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
768 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
769 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);
770 } 1036 }
771} 1037}
772 1038
773int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
774fd_valid (int fd) 1041fd_valid (int fd)
775{ 1042{
776#ifdef _WIN32 1043#ifdef _WIN32
777 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
778#else 1045#else
779 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
780#endif 1047#endif
781} 1048}
782 1049
… …
800 1067
801 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
802 if (anfds [fd].events) 1069 if (anfds [fd].events)
803 { 1070 {
804 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
805 return; 1072 break;
806 } 1073 }
807} 1074}
808 1075
809/* 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 */
810static void noinline 1077static void noinline
… …
814 1081
815 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
816 if (anfds [fd].events) 1083 if (anfds [fd].events)
817 { 1084 {
818 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
1086 anfds [fd].emask = 0;
819 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
820 } 1088 }
821} 1089}
822 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
823/*****************************************************************************/ 1105/*****************************************************************************/
824 1106
825/* 1107/*
826 * 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
827 * 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
828 * the branching factor of the d-tree. 1110 * the branching factor of the d-tree.
829 */ 1111 */
830 1112
831/* 1113/*
… …
840#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
841#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
842#define UPHEAP_DONE(p,k) ((p) == (k)) 1124#define UPHEAP_DONE(p,k) ((p) == (k))
843 1125
844/* away from the root */ 1126/* away from the root */
845void inline_speed 1127inline_speed void
846downheap (ANHE *heap, int N, int k) 1128downheap (ANHE *heap, int N, int k)
847{ 1129{
848 ANHE he = heap [k]; 1130 ANHE he = heap [k];
849 ANHE *E = heap + N + HEAP0; 1131 ANHE *E = heap + N + HEAP0;
850 1132
… …
890#define HEAP0 1 1172#define HEAP0 1
891#define HPARENT(k) ((k) >> 1) 1173#define HPARENT(k) ((k) >> 1)
892#define UPHEAP_DONE(p,k) (!(p)) 1174#define UPHEAP_DONE(p,k) (!(p))
893 1175
894/* away from the root */ 1176/* away from the root */
895void inline_speed 1177inline_speed void
896downheap (ANHE *heap, int N, int k) 1178downheap (ANHE *heap, int N, int k)
897{ 1179{
898 ANHE he = heap [k]; 1180 ANHE he = heap [k];
899 1181
900 for (;;) 1182 for (;;)
901 { 1183 {
902 int c = k << 1; 1184 int c = k << 1;
903 1185
904 if (c > N + HEAP0 - 1) 1186 if (c >= N + HEAP0)
905 break; 1187 break;
906 1188
907 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])
908 ? 1 : 0; 1190 ? 1 : 0;
909 1191
… …
920 ev_active (ANHE_w (he)) = k; 1202 ev_active (ANHE_w (he)) = k;
921} 1203}
922#endif 1204#endif
923 1205
924/* towards the root */ 1206/* towards the root */
925void inline_speed 1207inline_speed void
926upheap (ANHE *heap, int k) 1208upheap (ANHE *heap, int k)
927{ 1209{
928 ANHE he = heap [k]; 1210 ANHE he = heap [k];
929 1211
930 for (;;) 1212 for (;;)
… …
941 1223
942 heap [k] = he; 1224 heap [k] = he;
943 ev_active (ANHE_w (he)) = k; 1225 ev_active (ANHE_w (he)) = k;
944} 1226}
945 1227
946void inline_size 1228/* move an element suitably so it is in a correct place */
1229inline_size void
947adjustheap (ANHE *heap, int N, int k) 1230adjustheap (ANHE *heap, int N, int k)
948{ 1231{
949 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)]))
950 upheap (heap, k); 1233 upheap (heap, k);
951 else 1234 else
952 downheap (heap, N, k); 1235 downheap (heap, N, k);
953} 1236}
954 1237
955/* 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 */
956void inline_size 1239inline_size void
957reheap (ANHE *heap, int N) 1240reheap (ANHE *heap, int N)
958{ 1241{
959 int i; 1242 int i;
960 1243
961 /* 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 */
… …
964 upheap (heap, i + HEAP0); 1247 upheap (heap, i + HEAP0);
965} 1248}
966 1249
967/*****************************************************************************/ 1250/*****************************************************************************/
968 1251
1252/* associate signal watchers to a signal signal */
969typedef struct 1253typedef struct
970{ 1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
971 WL head; 1259 WL head;
972 EV_ATOMIC_T gotsig;
973} ANSIG; 1260} ANSIG;
974 1261
975static ANSIG *signals; 1262static ANSIG signals [EV_NSIG - 1];
976static int signalmax;
977
978static EV_ATOMIC_T gotsig;
979
980void inline_size
981signals_init (ANSIG *base, int count)
982{
983 while (count--)
984 {
985 base->head = 0;
986 base->gotsig = 0;
987
988 ++base;
989 }
990}
991 1263
992/*****************************************************************************/ 1264/*****************************************************************************/
993 1265
994void inline_speed 1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
995fd_intern (int fd)
996{
997#ifdef _WIN32
998 unsigned long arg = 1;
999 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1000#else
1001 fcntl (fd, F_SETFD, FD_CLOEXEC);
1002 fcntl (fd, F_SETFL, O_NONBLOCK);
1003#endif
1004}
1005 1267
1006static void noinline 1268static void noinline
1007evpipe_init (EV_P) 1269evpipe_init (EV_P)
1008{ 1270{
1009 if (!ev_is_active (&pipeev)) 1271 if (!ev_is_active (&pipe_w))
1010 { 1272 {
1011#if EV_USE_EVENTFD 1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
1012 if ((evfd = eventfd (0, 0)) >= 0) 1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
1013 { 1279 {
1014 evpipe [0] = -1; 1280 evpipe [0] = -1;
1015 fd_intern (evfd); 1281 fd_intern (evfd); /* doing it twice doesn't hurt */
1016 ev_io_set (&pipeev, evfd, EV_READ); 1282 ev_io_set (&pipe_w, evfd, EV_READ);
1017 } 1283 }
1018 else 1284 else
1019#endif 1285# endif
1020 { 1286 {
1021 while (pipe (evpipe)) 1287 while (pipe (evpipe))
1022 syserr ("(libev) error creating signal/async pipe"); 1288 ev_syserr ("(libev) error creating signal/async pipe");
1023 1289
1024 fd_intern (evpipe [0]); 1290 fd_intern (evpipe [0]);
1025 fd_intern (evpipe [1]); 1291 fd_intern (evpipe [1]);
1026 ev_io_set (&pipeev, evpipe [0], EV_READ); 1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1027 } 1293 }
1028 1294
1029 ev_io_start (EV_A_ &pipeev); 1295 ev_io_start (EV_A_ &pipe_w);
1030 ev_unref (EV_A); /* watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1031 } 1297 }
1032} 1298}
1033 1299
1034void inline_size 1300inline_size void
1035evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1036{ 1302{
1037 if (!*flag) 1303 if (!*flag)
1038 { 1304 {
1039 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;
1040 1307
1041 *flag = 1; 1308 *flag = 1;
1042 1309
1043#if EV_USE_EVENTFD 1310#if EV_USE_EVENTFD
1044 if (evfd >= 0) 1311 if (evfd >= 0)
… …
1046 uint64_t counter = 1; 1313 uint64_t counter = 1;
1047 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
1048 } 1315 }
1049 else 1316 else
1050#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. */
1051 write (evpipe [1], &old_errno, 1); 1323 write (evpipe [1], &dummy, 1);
1052 1324
1053 errno = old_errno; 1325 errno = old_errno;
1054 } 1326 }
1055} 1327}
1056 1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
1057static void 1331static void
1058pipecb (EV_P_ ev_io *iow, int revents) 1332pipecb (EV_P_ ev_io *iow, int revents)
1059{ 1333{
1334 int i;
1335
1060#if EV_USE_EVENTFD 1336#if EV_USE_EVENTFD
1061 if (evfd >= 0) 1337 if (evfd >= 0)
1062 { 1338 {
1063 uint64_t counter; 1339 uint64_t counter;
1064 read (evfd, &counter, sizeof (uint64_t)); 1340 read (evfd, &counter, sizeof (uint64_t));
1065 } 1341 }
1066 else 1342 else
1067#endif 1343#endif
1068 { 1344 {
1069 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1070 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
1071 } 1348 }
1072 1349
1073 if (gotsig && ev_is_default_loop (EV_A)) 1350 if (sig_pending)
1074 { 1351 {
1075 int signum; 1352 sig_pending = 0;
1076 gotsig = 0;
1077 1353
1078 for (signum = signalmax; signum--; ) 1354 for (i = EV_NSIG - 1; i--; )
1079 if (signals [signum].gotsig) 1355 if (expect_false (signals [i].pending))
1080 ev_feed_signal_event (EV_A_ signum + 1); 1356 ev_feed_signal_event (EV_A_ i + 1);
1081 } 1357 }
1082 1358
1083#if EV_ASYNC_ENABLE 1359#if EV_ASYNC_ENABLE
1084 if (gotasync) 1360 if (async_pending)
1085 { 1361 {
1086 int i; 1362 async_pending = 0;
1087 gotasync = 0;
1088 1363
1089 for (i = asynccnt; i--; ) 1364 for (i = asynccnt; i--; )
1090 if (asyncs [i]->sent) 1365 if (asyncs [i]->sent)
1091 { 1366 {
1092 asyncs [i]->sent = 0; 1367 asyncs [i]->sent = 0;
… …
1100 1375
1101static void 1376static void
1102ev_sighandler (int signum) 1377ev_sighandler (int signum)
1103{ 1378{
1104#if EV_MULTIPLICITY 1379#if EV_MULTIPLICITY
1105 struct ev_loop *loop = &default_loop_struct; 1380 EV_P = signals [signum - 1].loop;
1106#endif 1381#endif
1107 1382
1108#if _WIN32 1383#ifdef _WIN32
1109 signal (signum, ev_sighandler); 1384 signal (signum, ev_sighandler);
1110#endif 1385#endif
1111 1386
1112 signals [signum - 1].gotsig = 1; 1387 signals [signum - 1].pending = 1;
1113 evpipe_write (EV_A_ &gotsig); 1388 evpipe_write (EV_A_ &sig_pending);
1114} 1389}
1115 1390
1116void noinline 1391void noinline
1117ev_feed_signal_event (EV_P_ int signum) 1392ev_feed_signal_event (EV_P_ int signum)
1118{ 1393{
1119 WL w; 1394 WL w;
1120 1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1121#if EV_MULTIPLICITY 1401#if EV_MULTIPLICITY
1122 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 */
1123#endif 1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1124 1404
1125 --signum; 1405 if (expect_false (signals [signum].loop != EV_A))
1126
1127 if (signum < 0 || signum >= signalmax)
1128 return; 1406 return;
1407#endif
1129 1408
1130 signals [signum].gotsig = 0; 1409 signals [signum].pending = 0;
1131 1410
1132 for (w = signals [signum].head; w; w = w->next) 1411 for (w = signals [signum].head; w; w = w->next)
1133 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1134} 1413}
1135 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
1136/*****************************************************************************/ 1437/*****************************************************************************/
1137 1438
1439#if EV_CHILD_ENABLE
1138static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
1139
1140#ifndef _WIN32
1141 1441
1142static ev_signal childev; 1442static ev_signal childev;
1143 1443
1144#ifndef WIFCONTINUED 1444#ifndef WIFCONTINUED
1145# define WIFCONTINUED(status) 0 1445# define WIFCONTINUED(status) 0
1146#endif 1446#endif
1147 1447
1148void inline_speed 1448/* handle a single child status event */
1449inline_speed void
1149child_reap (EV_P_ int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
1150{ 1451{
1151 ev_child *w; 1452 ev_child *w;
1152 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1153 1454
1154 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)
1155 { 1456 {
1156 if ((w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1157 && (!traced || (w->flags & 1))) 1458 && (!traced || (w->flags & 1)))
1158 { 1459 {
1159 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 */
… …
1166 1467
1167#ifndef WCONTINUED 1468#ifndef WCONTINUED
1168# define WCONTINUED 0 1469# define WCONTINUED 0
1169#endif 1470#endif
1170 1471
1472/* called on sigchld etc., calls waitpid */
1171static void 1473static void
1172childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
1173{ 1475{
1174 int pid, status; 1476 int pid, status;
1175 1477
… …
1183 /* 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 */
1184 /* 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 */
1185 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1186 1488
1187 child_reap (EV_A_ pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1188 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
1189 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 */
1190} 1492}
1191 1493
1192#endif 1494#endif
1193 1495
1194/*****************************************************************************/ 1496/*****************************************************************************/
1195 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1196#if EV_USE_PORT 1501#if EV_USE_PORT
1197# include "ev_port.c" 1502# include "ev_port.c"
1198#endif 1503#endif
1199#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1200# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
1256 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
1257 /* 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 */
1258 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
1259#endif 1564#endif
1260#ifdef __APPLE__ 1565#ifdef __APPLE__
1261 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
1262 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) */
1263#endif 1572#endif
1264 1573
1265 return flags; 1574 return flags;
1266} 1575}
1267 1576
… …
1269ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1270{ 1579{
1271 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1272 1581
1273 /* 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 */
1274 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1275 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1276 1585
1277 return flags; 1586 return flags;
1278} 1587}
1279 1588
1280unsigned int 1589unsigned int
1281ev_backend (EV_P) 1590ev_backend (EV_P)
1282{ 1591{
1283 return backend; 1592 return backend;
1284} 1593}
1285 1594
1595#if EV_FEATURE_API
1286unsigned int 1596unsigned int
1287ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1288{ 1598{
1289 return loop_count; 1599 return loop_count;
1290} 1600}
1291 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
1292void 1608void
1293ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1294{ 1610{
1295 io_blocktime = interval; 1611 io_blocktime = interval;
1296} 1612}
… …
1299ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1300{ 1616{
1301 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1302} 1618}
1303 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 */
1304static void noinline 1645static void noinline
1305loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1306{ 1647{
1307 if (!backend) 1648 if (!backend)
1308 { 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
1309#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1310 { 1662 {
1311 struct timespec ts; 1663 struct timespec ts;
1664
1312 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1313 have_monotonic = 1; 1666 have_monotonic = 1;
1314 } 1667 }
1315#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"));
1316 1680
1317 ev_rt_now = ev_time (); 1681 ev_rt_now = ev_time ();
1318 mn_now = get_clock (); 1682 mn_now = get_clock ();
1319 now_floor = mn_now; 1683 now_floor = mn_now;
1320 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
1321 1688
1322 io_blocktime = 0.; 1689 io_blocktime = 0.;
1323 timeout_blocktime = 0.; 1690 timeout_blocktime = 0.;
1324 backend = 0; 1691 backend = 0;
1325 backend_fd = -1; 1692 backend_fd = -1;
1326 gotasync = 0; 1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1327#if EV_USE_INOTIFY 1697#if EV_USE_INOTIFY
1328 fs_fd = -2; 1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1329#endif 1699#endif
1330 1700#if EV_USE_SIGNALFD
1331 /* pid check not overridable via env */ 1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1332#ifndef _WIN32
1333 if (flags & EVFLAG_FORKCHECK)
1334 curpid = getpid ();
1335#endif 1702#endif
1336
1337 if (!(flags & EVFLAG_NOENV)
1338 && !enable_secure ()
1339 && getenv ("LIBEV_FLAGS"))
1340 flags = atoi (getenv ("LIBEV_FLAGS"));
1341 1703
1342 if (!(flags & 0x0000ffffU)) 1704 if (!(flags & 0x0000ffffU))
1343 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1344 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1345#if EV_USE_PORT 1710#if EV_USE_PORT
1346 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1347#endif 1712#endif
1348#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1349 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1356#endif 1721#endif
1357#if EV_USE_SELECT 1722#if EV_USE_SELECT
1358 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1359#endif 1724#endif
1360 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1361 ev_init (&pipeev, pipecb); 1729 ev_init (&pipe_w, pipecb);
1362 ev_set_priority (&pipeev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1363 } 1732 }
1364} 1733}
1365 1734
1366static void noinline 1735/* free up a loop structure */
1736void
1367loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
1368{ 1738{
1369 int i; 1739 int i;
1370 1740
1741 /* mimic free (0) */
1742 if (!EV_A)
1743 return;
1744
1745#if EV_CLEANUP_ENABLE
1746 /* queue cleanup watchers (and execute them) */
1747 if (expect_false (cleanupcnt))
1748 {
1749 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1750 EV_INVOKE_PENDING;
1751 }
1752#endif
1753
1754#if EV_CHILD_ENABLE
1755 if (ev_is_active (&childev))
1756 {
1757 ev_ref (EV_A); /* child watcher */
1758 ev_signal_stop (EV_A_ &childev);
1759 }
1760#endif
1761
1371 if (ev_is_active (&pipeev)) 1762 if (ev_is_active (&pipe_w))
1372 { 1763 {
1373 ev_ref (EV_A); /* signal watcher */ 1764 /*ev_ref (EV_A);*/
1374 ev_io_stop (EV_A_ &pipeev); 1765 /*ev_io_stop (EV_A_ &pipe_w);*/
1375 1766
1376#if EV_USE_EVENTFD 1767#if EV_USE_EVENTFD
1377 if (evfd >= 0) 1768 if (evfd >= 0)
1378 close (evfd); 1769 close (evfd);
1379#endif 1770#endif
1380 1771
1381 if (evpipe [0] >= 0) 1772 if (evpipe [0] >= 0)
1382 { 1773 {
1383 close (evpipe [0]); 1774 EV_WIN32_CLOSE_FD (evpipe [0]);
1384 close (evpipe [1]); 1775 EV_WIN32_CLOSE_FD (evpipe [1]);
1385 } 1776 }
1386 } 1777 }
1778
1779#if EV_USE_SIGNALFD
1780 if (ev_is_active (&sigfd_w))
1781 close (sigfd);
1782#endif
1387 1783
1388#if EV_USE_INOTIFY 1784#if EV_USE_INOTIFY
1389 if (fs_fd >= 0) 1785 if (fs_fd >= 0)
1390 close (fs_fd); 1786 close (fs_fd);
1391#endif 1787#endif
1392 1788
1393 if (backend_fd >= 0) 1789 if (backend_fd >= 0)
1394 close (backend_fd); 1790 close (backend_fd);
1395 1791
1792#if EV_USE_IOCP
1793 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1794#endif
1396#if EV_USE_PORT 1795#if EV_USE_PORT
1397 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1796 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1398#endif 1797#endif
1399#if EV_USE_KQUEUE 1798#if EV_USE_KQUEUE
1400 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1799 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1415#if EV_IDLE_ENABLE 1814#if EV_IDLE_ENABLE
1416 array_free (idle, [i]); 1815 array_free (idle, [i]);
1417#endif 1816#endif
1418 } 1817 }
1419 1818
1420 ev_free (anfds); anfdmax = 0; 1819 ev_free (anfds); anfds = 0; anfdmax = 0;
1421 1820
1422 /* have to use the microsoft-never-gets-it-right macro */ 1821 /* have to use the microsoft-never-gets-it-right macro */
1822 array_free (rfeed, EMPTY);
1423 array_free (fdchange, EMPTY); 1823 array_free (fdchange, EMPTY);
1424 array_free (timer, EMPTY); 1824 array_free (timer, EMPTY);
1425#if EV_PERIODIC_ENABLE 1825#if EV_PERIODIC_ENABLE
1426 array_free (periodic, EMPTY); 1826 array_free (periodic, EMPTY);
1427#endif 1827#endif
1428#if EV_FORK_ENABLE 1828#if EV_FORK_ENABLE
1429 array_free (fork, EMPTY); 1829 array_free (fork, EMPTY);
1430#endif 1830#endif
1831#if EV_CLEANUP_ENABLE
1832 array_free (cleanup, EMPTY);
1833#endif
1431 array_free (prepare, EMPTY); 1834 array_free (prepare, EMPTY);
1432 array_free (check, EMPTY); 1835 array_free (check, EMPTY);
1433#if EV_ASYNC_ENABLE 1836#if EV_ASYNC_ENABLE
1434 array_free (async, EMPTY); 1837 array_free (async, EMPTY);
1435#endif 1838#endif
1436 1839
1437 backend = 0; 1840 backend = 0;
1841
1842#if EV_MULTIPLICITY
1843 if (ev_is_default_loop (EV_A))
1844#endif
1845 ev_default_loop_ptr = 0;
1846#if EV_MULTIPLICITY
1847 else
1848 ev_free (EV_A);
1849#endif
1438} 1850}
1439 1851
1440#if EV_USE_INOTIFY 1852#if EV_USE_INOTIFY
1441void inline_size infy_fork (EV_P); 1853inline_size void infy_fork (EV_P);
1442#endif 1854#endif
1443 1855
1444void inline_size 1856inline_size void
1445loop_fork (EV_P) 1857loop_fork (EV_P)
1446{ 1858{
1447#if EV_USE_PORT 1859#if EV_USE_PORT
1448 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1860 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1449#endif 1861#endif
… …
1455#endif 1867#endif
1456#if EV_USE_INOTIFY 1868#if EV_USE_INOTIFY
1457 infy_fork (EV_A); 1869 infy_fork (EV_A);
1458#endif 1870#endif
1459 1871
1460 if (ev_is_active (&pipeev)) 1872 if (ev_is_active (&pipe_w))
1461 { 1873 {
1462 /* this "locks" the handlers against writing to the pipe */ 1874 /* this "locks" the handlers against writing to the pipe */
1463 /* while we modify the fd vars */ 1875 /* while we modify the fd vars */
1464 gotsig = 1; 1876 sig_pending = 1;
1465#if EV_ASYNC_ENABLE 1877#if EV_ASYNC_ENABLE
1466 gotasync = 1; 1878 async_pending = 1;
1467#endif 1879#endif
1468 1880
1469 ev_ref (EV_A); 1881 ev_ref (EV_A);
1470 ev_io_stop (EV_A_ &pipeev); 1882 ev_io_stop (EV_A_ &pipe_w);
1471 1883
1472#if EV_USE_EVENTFD 1884#if EV_USE_EVENTFD
1473 if (evfd >= 0) 1885 if (evfd >= 0)
1474 close (evfd); 1886 close (evfd);
1475#endif 1887#endif
1476 1888
1477 if (evpipe [0] >= 0) 1889 if (evpipe [0] >= 0)
1478 { 1890 {
1479 close (evpipe [0]); 1891 EV_WIN32_CLOSE_FD (evpipe [0]);
1480 close (evpipe [1]); 1892 EV_WIN32_CLOSE_FD (evpipe [1]);
1481 } 1893 }
1482 1894
1895#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1483 evpipe_init (EV_A); 1896 evpipe_init (EV_A);
1484 /* now iterate over everything, in case we missed something */ 1897 /* now iterate over everything, in case we missed something */
1485 pipecb (EV_A_ &pipeev, EV_READ); 1898 pipecb (EV_A_ &pipe_w, EV_READ);
1899#endif
1486 } 1900 }
1487 1901
1488 postfork = 0; 1902 postfork = 0;
1489} 1903}
1490 1904
1491#if EV_MULTIPLICITY 1905#if EV_MULTIPLICITY
1492 1906
1493struct ev_loop * 1907struct ev_loop *
1494ev_loop_new (unsigned int flags) 1908ev_loop_new (unsigned int flags)
1495{ 1909{
1496 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1910 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1497 1911
1498 memset (loop, 0, sizeof (struct ev_loop)); 1912 memset (EV_A, 0, sizeof (struct ev_loop));
1499
1500 loop_init (EV_A_ flags); 1913 loop_init (EV_A_ flags);
1501 1914
1502 if (ev_backend (EV_A)) 1915 if (ev_backend (EV_A))
1503 return loop; 1916 return EV_A;
1504 1917
1918 ev_free (EV_A);
1505 return 0; 1919 return 0;
1506} 1920}
1507 1921
1508void 1922#endif /* multiplicity */
1509ev_loop_destroy (EV_P)
1510{
1511 loop_destroy (EV_A);
1512 ev_free (loop);
1513}
1514
1515void
1516ev_loop_fork (EV_P)
1517{
1518 postfork = 1; /* must be in line with ev_default_fork */
1519}
1520 1923
1521#if EV_VERIFY 1924#if EV_VERIFY
1522static void noinline 1925static void noinline
1523verify_watcher (EV_P_ W w) 1926verify_watcher (EV_P_ W w)
1524{ 1927{
1525 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1928 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1526 1929
1527 if (w->pending) 1930 if (w->pending)
1528 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1931 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1529} 1932}
1530 1933
1531static void noinline 1934static void noinline
1532verify_heap (EV_P_ ANHE *heap, int N) 1935verify_heap (EV_P_ ANHE *heap, int N)
1533{ 1936{
1534 int i; 1937 int i;
1535 1938
1536 for (i = HEAP0; i < N + HEAP0; ++i) 1939 for (i = HEAP0; i < N + HEAP0; ++i)
1537 { 1940 {
1538 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1941 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1539 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1942 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1540 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1943 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1541 1944
1542 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1945 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1543 } 1946 }
1544} 1947}
1545 1948
1546static void noinline 1949static void noinline
1547array_verify (EV_P_ W *ws, int cnt) 1950array_verify (EV_P_ W *ws, int cnt)
1548{ 1951{
1549 while (cnt--) 1952 while (cnt--)
1550 { 1953 {
1551 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1954 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1552 verify_watcher (EV_A_ ws [cnt]); 1955 verify_watcher (EV_A_ ws [cnt]);
1553 } 1956 }
1554} 1957}
1555#endif 1958#endif
1556 1959
1960#if EV_FEATURE_API
1557void 1961void
1558ev_loop_verify (EV_P) 1962ev_verify (EV_P)
1559{ 1963{
1560#if EV_VERIFY 1964#if EV_VERIFY
1561 int i; 1965 int i;
1562 WL w; 1966 WL w;
1563 1967
1564 assert (activecnt >= -1); 1968 assert (activecnt >= -1);
1565 1969
1566 assert (fdchangemax >= fdchangecnt); 1970 assert (fdchangemax >= fdchangecnt);
1567 for (i = 0; i < fdchangecnt; ++i) 1971 for (i = 0; i < fdchangecnt; ++i)
1568 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1972 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1569 1973
1570 assert (anfdmax >= 0); 1974 assert (anfdmax >= 0);
1571 for (i = 0; i < anfdmax; ++i) 1975 for (i = 0; i < anfdmax; ++i)
1572 for (w = anfds [i].head; w; w = w->next) 1976 for (w = anfds [i].head; w; w = w->next)
1573 { 1977 {
1574 verify_watcher (EV_A_ (W)w); 1978 verify_watcher (EV_A_ (W)w);
1575 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1979 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1576 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1980 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1577 } 1981 }
1578 1982
1579 assert (timermax >= timercnt); 1983 assert (timermax >= timercnt);
1580 verify_heap (EV_A_ timers, timercnt); 1984 verify_heap (EV_A_ timers, timercnt);
1581 1985
… …
1597#if EV_FORK_ENABLE 2001#if EV_FORK_ENABLE
1598 assert (forkmax >= forkcnt); 2002 assert (forkmax >= forkcnt);
1599 array_verify (EV_A_ (W *)forks, forkcnt); 2003 array_verify (EV_A_ (W *)forks, forkcnt);
1600#endif 2004#endif
1601 2005
2006#if EV_CLEANUP_ENABLE
2007 assert (cleanupmax >= cleanupcnt);
2008 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2009#endif
2010
1602#if EV_ASYNC_ENABLE 2011#if EV_ASYNC_ENABLE
1603 assert (asyncmax >= asynccnt); 2012 assert (asyncmax >= asynccnt);
1604 array_verify (EV_A_ (W *)asyncs, asynccnt); 2013 array_verify (EV_A_ (W *)asyncs, asynccnt);
1605#endif 2014#endif
1606 2015
2016#if EV_PREPARE_ENABLE
1607 assert (preparemax >= preparecnt); 2017 assert (preparemax >= preparecnt);
1608 array_verify (EV_A_ (W *)prepares, preparecnt); 2018 array_verify (EV_A_ (W *)prepares, preparecnt);
2019#endif
1609 2020
2021#if EV_CHECK_ENABLE
1610 assert (checkmax >= checkcnt); 2022 assert (checkmax >= checkcnt);
1611 array_verify (EV_A_ (W *)checks, checkcnt); 2023 array_verify (EV_A_ (W *)checks, checkcnt);
2024#endif
1612 2025
1613# if 0 2026# if 0
2027#if EV_CHILD_ENABLE
1614 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2028 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1615 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2029 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2030#endif
1616# endif 2031# endif
1617#endif 2032#endif
1618} 2033}
1619 2034#endif
1620#endif /* multiplicity */
1621 2035
1622#if EV_MULTIPLICITY 2036#if EV_MULTIPLICITY
1623struct ev_loop * 2037struct ev_loop *
1624ev_default_loop_init (unsigned int flags)
1625#else 2038#else
1626int 2039int
2040#endif
1627ev_default_loop (unsigned int flags) 2041ev_default_loop (unsigned int flags)
1628#endif
1629{ 2042{
1630 if (!ev_default_loop_ptr) 2043 if (!ev_default_loop_ptr)
1631 { 2044 {
1632#if EV_MULTIPLICITY 2045#if EV_MULTIPLICITY
1633 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2046 EV_P = ev_default_loop_ptr = &default_loop_struct;
1634#else 2047#else
1635 ev_default_loop_ptr = 1; 2048 ev_default_loop_ptr = 1;
1636#endif 2049#endif
1637 2050
1638 loop_init (EV_A_ flags); 2051 loop_init (EV_A_ flags);
1639 2052
1640 if (ev_backend (EV_A)) 2053 if (ev_backend (EV_A))
1641 { 2054 {
1642#ifndef _WIN32 2055#if EV_CHILD_ENABLE
1643 ev_signal_init (&childev, childcb, SIGCHLD); 2056 ev_signal_init (&childev, childcb, SIGCHLD);
1644 ev_set_priority (&childev, EV_MAXPRI); 2057 ev_set_priority (&childev, EV_MAXPRI);
1645 ev_signal_start (EV_A_ &childev); 2058 ev_signal_start (EV_A_ &childev);
1646 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2059 ev_unref (EV_A); /* child watcher should not keep loop alive */
1647#endif 2060#endif
… …
1652 2065
1653 return ev_default_loop_ptr; 2066 return ev_default_loop_ptr;
1654} 2067}
1655 2068
1656void 2069void
1657ev_default_destroy (void) 2070ev_loop_fork (EV_P)
1658{ 2071{
1659#if EV_MULTIPLICITY
1660 struct ev_loop *loop = ev_default_loop_ptr;
1661#endif
1662
1663#ifndef _WIN32
1664 ev_ref (EV_A); /* child watcher */
1665 ev_signal_stop (EV_A_ &childev);
1666#endif
1667
1668 loop_destroy (EV_A);
1669}
1670
1671void
1672ev_default_fork (void)
1673{
1674#if EV_MULTIPLICITY
1675 struct ev_loop *loop = ev_default_loop_ptr;
1676#endif
1677
1678 if (backend)
1679 postfork = 1; /* must be in line with ev_loop_fork */ 2072 postfork = 1; /* must be in line with ev_default_fork */
1680} 2073}
1681 2074
1682/*****************************************************************************/ 2075/*****************************************************************************/
1683 2076
1684void 2077void
1685ev_invoke (EV_P_ void *w, int revents) 2078ev_invoke (EV_P_ void *w, int revents)
1686{ 2079{
1687 EV_CB_INVOKE ((W)w, revents); 2080 EV_CB_INVOKE ((W)w, revents);
1688} 2081}
1689 2082
1690void inline_speed 2083unsigned int
1691call_pending (EV_P) 2084ev_pending_count (EV_P)
2085{
2086 int pri;
2087 unsigned int count = 0;
2088
2089 for (pri = NUMPRI; pri--; )
2090 count += pendingcnt [pri];
2091
2092 return count;
2093}
2094
2095void noinline
2096ev_invoke_pending (EV_P)
1692{ 2097{
1693 int pri; 2098 int pri;
1694 2099
1695 for (pri = NUMPRI; pri--; ) 2100 for (pri = NUMPRI; pri--; )
1696 while (pendingcnt [pri]) 2101 while (pendingcnt [pri])
1697 { 2102 {
1698 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2103 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1699 2104
1700 if (expect_true (p->w))
1701 {
1702 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2105 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2106 /* ^ this is no longer true, as pending_w could be here */
1703 2107
1704 p->w->pending = 0; 2108 p->w->pending = 0;
1705 EV_CB_INVOKE (p->w, p->events); 2109 EV_CB_INVOKE (p->w, p->events);
1706 EV_FREQUENT_CHECK; 2110 EV_FREQUENT_CHECK;
1707 }
1708 } 2111 }
1709} 2112}
1710 2113
1711#if EV_IDLE_ENABLE 2114#if EV_IDLE_ENABLE
1712void inline_size 2115/* make idle watchers pending. this handles the "call-idle */
2116/* only when higher priorities are idle" logic */
2117inline_size void
1713idle_reify (EV_P) 2118idle_reify (EV_P)
1714{ 2119{
1715 if (expect_false (idleall)) 2120 if (expect_false (idleall))
1716 { 2121 {
1717 int pri; 2122 int pri;
… …
1729 } 2134 }
1730 } 2135 }
1731} 2136}
1732#endif 2137#endif
1733 2138
1734void inline_size 2139/* make timers pending */
2140inline_size void
1735timers_reify (EV_P) 2141timers_reify (EV_P)
1736{ 2142{
1737 EV_FREQUENT_CHECK; 2143 EV_FREQUENT_CHECK;
1738 2144
1739 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2145 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1740 { 2146 {
1741 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2147 do
1742
1743 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1744
1745 /* first reschedule or stop timer */
1746 if (w->repeat)
1747 { 2148 {
2149 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2150
2151 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2152
2153 /* first reschedule or stop timer */
2154 if (w->repeat)
2155 {
1748 ev_at (w) += w->repeat; 2156 ev_at (w) += w->repeat;
1749 if (ev_at (w) < mn_now) 2157 if (ev_at (w) < mn_now)
1750 ev_at (w) = mn_now; 2158 ev_at (w) = mn_now;
1751 2159
1752 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2160 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1753 2161
1754 ANHE_at_cache (timers [HEAP0]); 2162 ANHE_at_cache (timers [HEAP0]);
1755 downheap (timers, timercnt, HEAP0); 2163 downheap (timers, timercnt, HEAP0);
2164 }
2165 else
2166 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2167
2168 EV_FREQUENT_CHECK;
2169 feed_reverse (EV_A_ (W)w);
1756 } 2170 }
1757 else 2171 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1758 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1759 2172
1760 EV_FREQUENT_CHECK; 2173 feed_reverse_done (EV_A_ EV_TIMER);
1761 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1762 } 2174 }
1763} 2175}
1764 2176
1765#if EV_PERIODIC_ENABLE 2177#if EV_PERIODIC_ENABLE
1766void inline_size 2178/* make periodics pending */
2179inline_size void
1767periodics_reify (EV_P) 2180periodics_reify (EV_P)
1768{ 2181{
1769 EV_FREQUENT_CHECK; 2182 EV_FREQUENT_CHECK;
1770 2183
1771 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2184 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1772 { 2185 {
1773 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2186 int feed_count = 0;
1774 2187
1775 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2188 do
1776
1777 /* first reschedule or stop timer */
1778 if (w->reschedule_cb)
1779 { 2189 {
2190 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2191
2192 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2193
2194 /* first reschedule or stop timer */
2195 if (w->reschedule_cb)
2196 {
1780 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2197 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1781 2198
1782 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2199 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1783 2200
1784 ANHE_at_cache (periodics [HEAP0]); 2201 ANHE_at_cache (periodics [HEAP0]);
1785 downheap (periodics, periodiccnt, HEAP0); 2202 downheap (periodics, periodiccnt, HEAP0);
2203 }
2204 else if (w->interval)
2205 {
2206 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2207 /* if next trigger time is not sufficiently in the future, put it there */
2208 /* this might happen because of floating point inexactness */
2209 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2210 {
2211 ev_at (w) += w->interval;
2212
2213 /* if interval is unreasonably low we might still have a time in the past */
2214 /* so correct this. this will make the periodic very inexact, but the user */
2215 /* has effectively asked to get triggered more often than possible */
2216 if (ev_at (w) < ev_rt_now)
2217 ev_at (w) = ev_rt_now;
2218 }
2219
2220 ANHE_at_cache (periodics [HEAP0]);
2221 downheap (periodics, periodiccnt, HEAP0);
2222 }
2223 else
2224 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2225
2226 EV_FREQUENT_CHECK;
2227 feed_reverse (EV_A_ (W)w);
1786 } 2228 }
1787 else if (w->interval) 2229 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1788 {
1789 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1790 /* if next trigger time is not sufficiently in the future, put it there */
1791 /* this might happen because of floating point inexactness */
1792 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1793 {
1794 ev_at (w) += w->interval;
1795 2230
1796 /* if interval is unreasonably low we might still have a time in the past */
1797 /* so correct this. this will make the periodic very inexact, but the user */
1798 /* has effectively asked to get triggered more often than possible */
1799 if (ev_at (w) < ev_rt_now)
1800 ev_at (w) = ev_rt_now;
1801 }
1802
1803 ANHE_at_cache (periodics [HEAP0]);
1804 downheap (periodics, periodiccnt, HEAP0);
1805 }
1806 else
1807 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1808
1809 EV_FREQUENT_CHECK;
1810 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2231 feed_reverse_done (EV_A_ EV_PERIODIC);
1811 } 2232 }
1812} 2233}
1813 2234
2235/* simply recalculate all periodics */
2236/* TODO: maybe ensure that at least one event happens when jumping forward? */
1814static void noinline 2237static void noinline
1815periodics_reschedule (EV_P) 2238periodics_reschedule (EV_P)
1816{ 2239{
1817 int i; 2240 int i;
1818 2241
… …
1831 2254
1832 reheap (periodics, periodiccnt); 2255 reheap (periodics, periodiccnt);
1833} 2256}
1834#endif 2257#endif
1835 2258
1836void inline_speed 2259/* adjust all timers by a given offset */
2260static void noinline
2261timers_reschedule (EV_P_ ev_tstamp adjust)
2262{
2263 int i;
2264
2265 for (i = 0; i < timercnt; ++i)
2266 {
2267 ANHE *he = timers + i + HEAP0;
2268 ANHE_w (*he)->at += adjust;
2269 ANHE_at_cache (*he);
2270 }
2271}
2272
2273/* fetch new monotonic and realtime times from the kernel */
2274/* also detect if there was a timejump, and act accordingly */
2275inline_speed void
1837time_update (EV_P_ ev_tstamp max_block) 2276time_update (EV_P_ ev_tstamp max_block)
1838{ 2277{
1839 int i;
1840
1841#if EV_USE_MONOTONIC 2278#if EV_USE_MONOTONIC
1842 if (expect_true (have_monotonic)) 2279 if (expect_true (have_monotonic))
1843 { 2280 {
2281 int i;
1844 ev_tstamp odiff = rtmn_diff; 2282 ev_tstamp odiff = rtmn_diff;
1845 2283
1846 mn_now = get_clock (); 2284 mn_now = get_clock ();
1847 2285
1848 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2286 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1874 ev_rt_now = ev_time (); 2312 ev_rt_now = ev_time ();
1875 mn_now = get_clock (); 2313 mn_now = get_clock ();
1876 now_floor = mn_now; 2314 now_floor = mn_now;
1877 } 2315 }
1878 2316
2317 /* no timer adjustment, as the monotonic clock doesn't jump */
2318 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1879# if EV_PERIODIC_ENABLE 2319# if EV_PERIODIC_ENABLE
1880 periodics_reschedule (EV_A); 2320 periodics_reschedule (EV_A);
1881# endif 2321# endif
1882 /* no timer adjustment, as the monotonic clock doesn't jump */
1883 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1884 } 2322 }
1885 else 2323 else
1886#endif 2324#endif
1887 { 2325 {
1888 ev_rt_now = ev_time (); 2326 ev_rt_now = ev_time ();
1889 2327
1890 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2328 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1891 { 2329 {
2330 /* adjust timers. this is easy, as the offset is the same for all of them */
2331 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1892#if EV_PERIODIC_ENABLE 2332#if EV_PERIODIC_ENABLE
1893 periodics_reschedule (EV_A); 2333 periodics_reschedule (EV_A);
1894#endif 2334#endif
1895 /* adjust timers. this is easy, as the offset is the same for all of them */
1896 for (i = 0; i < timercnt; ++i)
1897 {
1898 ANHE *he = timers + i + HEAP0;
1899 ANHE_w (*he)->at += ev_rt_now - mn_now;
1900 ANHE_at_cache (*he);
1901 }
1902 } 2335 }
1903 2336
1904 mn_now = ev_rt_now; 2337 mn_now = ev_rt_now;
1905 } 2338 }
1906} 2339}
1907 2340
1908void 2341void
1909ev_ref (EV_P)
1910{
1911 ++activecnt;
1912}
1913
1914void
1915ev_unref (EV_P)
1916{
1917 --activecnt;
1918}
1919
1920void
1921ev_now_update (EV_P)
1922{
1923 time_update (EV_A_ 1e100);
1924}
1925
1926static int loop_done;
1927
1928void
1929ev_loop (EV_P_ int flags) 2342ev_run (EV_P_ int flags)
1930{ 2343{
2344#if EV_FEATURE_API
2345 ++loop_depth;
2346#endif
2347
2348 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2349
1931 loop_done = EVUNLOOP_CANCEL; 2350 loop_done = EVBREAK_CANCEL;
1932 2351
1933 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2352 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1934 2353
1935 do 2354 do
1936 { 2355 {
1937#if EV_VERIFY >= 2 2356#if EV_VERIFY >= 2
1938 ev_loop_verify (EV_A); 2357 ev_verify (EV_A);
1939#endif 2358#endif
1940 2359
1941#ifndef _WIN32 2360#ifndef _WIN32
1942 if (expect_false (curpid)) /* penalise the forking check even more */ 2361 if (expect_false (curpid)) /* penalise the forking check even more */
1943 if (expect_false (getpid () != curpid)) 2362 if (expect_false (getpid () != curpid))
… …
1951 /* we might have forked, so queue fork handlers */ 2370 /* we might have forked, so queue fork handlers */
1952 if (expect_false (postfork)) 2371 if (expect_false (postfork))
1953 if (forkcnt) 2372 if (forkcnt)
1954 { 2373 {
1955 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2374 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1956 call_pending (EV_A); 2375 EV_INVOKE_PENDING;
1957 } 2376 }
1958#endif 2377#endif
1959 2378
2379#if EV_PREPARE_ENABLE
1960 /* queue prepare watchers (and execute them) */ 2380 /* queue prepare watchers (and execute them) */
1961 if (expect_false (preparecnt)) 2381 if (expect_false (preparecnt))
1962 { 2382 {
1963 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2383 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1964 call_pending (EV_A); 2384 EV_INVOKE_PENDING;
1965 } 2385 }
2386#endif
1966 2387
1967 if (expect_false (!activecnt)) 2388 if (expect_false (loop_done))
1968 break; 2389 break;
1969 2390
1970 /* we might have forked, so reify kernel state if necessary */ 2391 /* we might have forked, so reify kernel state if necessary */
1971 if (expect_false (postfork)) 2392 if (expect_false (postfork))
1972 loop_fork (EV_A); 2393 loop_fork (EV_A);
… …
1977 /* calculate blocking time */ 2398 /* calculate blocking time */
1978 { 2399 {
1979 ev_tstamp waittime = 0.; 2400 ev_tstamp waittime = 0.;
1980 ev_tstamp sleeptime = 0.; 2401 ev_tstamp sleeptime = 0.;
1981 2402
2403 /* remember old timestamp for io_blocktime calculation */
2404 ev_tstamp prev_mn_now = mn_now;
2405
2406 /* update time to cancel out callback processing overhead */
2407 time_update (EV_A_ 1e100);
2408
1982 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2409 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1983 { 2410 {
1984 /* update time to cancel out callback processing overhead */
1985 time_update (EV_A_ 1e100);
1986
1987 waittime = MAX_BLOCKTIME; 2411 waittime = MAX_BLOCKTIME;
1988 2412
1989 if (timercnt) 2413 if (timercnt)
1990 { 2414 {
1991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2415 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2422 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1999 if (waittime > to) waittime = to; 2423 if (waittime > to) waittime = to;
2000 } 2424 }
2001#endif 2425#endif
2002 2426
2427 /* don't let timeouts decrease the waittime below timeout_blocktime */
2003 if (expect_false (waittime < timeout_blocktime)) 2428 if (expect_false (waittime < timeout_blocktime))
2004 waittime = timeout_blocktime; 2429 waittime = timeout_blocktime;
2005 2430
2006 sleeptime = waittime - backend_fudge; 2431 /* extra check because io_blocktime is commonly 0 */
2007
2008 if (expect_true (sleeptime > io_blocktime)) 2432 if (expect_false (io_blocktime))
2009 sleeptime = io_blocktime;
2010
2011 if (sleeptime)
2012 { 2433 {
2434 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2435
2436 if (sleeptime > waittime - backend_fudge)
2437 sleeptime = waittime - backend_fudge;
2438
2439 if (expect_true (sleeptime > 0.))
2440 {
2013 ev_sleep (sleeptime); 2441 ev_sleep (sleeptime);
2014 waittime -= sleeptime; 2442 waittime -= sleeptime;
2443 }
2015 } 2444 }
2016 } 2445 }
2017 2446
2447#if EV_FEATURE_API
2018 ++loop_count; 2448 ++loop_count;
2449#endif
2450 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2019 backend_poll (EV_A_ waittime); 2451 backend_poll (EV_A_ waittime);
2452 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2020 2453
2021 /* update ev_rt_now, do magic */ 2454 /* update ev_rt_now, do magic */
2022 time_update (EV_A_ waittime + sleeptime); 2455 time_update (EV_A_ waittime + sleeptime);
2023 } 2456 }
2024 2457
… …
2031#if EV_IDLE_ENABLE 2464#if EV_IDLE_ENABLE
2032 /* queue idle watchers unless other events are pending */ 2465 /* queue idle watchers unless other events are pending */
2033 idle_reify (EV_A); 2466 idle_reify (EV_A);
2034#endif 2467#endif
2035 2468
2469#if EV_CHECK_ENABLE
2036 /* queue check watchers, to be executed first */ 2470 /* queue check watchers, to be executed first */
2037 if (expect_false (checkcnt)) 2471 if (expect_false (checkcnt))
2038 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2472 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2473#endif
2039 2474
2040 call_pending (EV_A); 2475 EV_INVOKE_PENDING;
2041 } 2476 }
2042 while (expect_true ( 2477 while (expect_true (
2043 activecnt 2478 activecnt
2044 && !loop_done 2479 && !loop_done
2045 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2480 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2046 )); 2481 ));
2047 2482
2048 if (loop_done == EVUNLOOP_ONE) 2483 if (loop_done == EVBREAK_ONE)
2049 loop_done = EVUNLOOP_CANCEL; 2484 loop_done = EVBREAK_CANCEL;
2050}
2051 2485
2486#if EV_FEATURE_API
2487 --loop_depth;
2488#endif
2489}
2490
2052void 2491void
2053ev_unloop (EV_P_ int how) 2492ev_break (EV_P_ int how)
2054{ 2493{
2055 loop_done = how; 2494 loop_done = how;
2056} 2495}
2057 2496
2497void
2498ev_ref (EV_P)
2499{
2500 ++activecnt;
2501}
2502
2503void
2504ev_unref (EV_P)
2505{
2506 --activecnt;
2507}
2508
2509void
2510ev_now_update (EV_P)
2511{
2512 time_update (EV_A_ 1e100);
2513}
2514
2515void
2516ev_suspend (EV_P)
2517{
2518 ev_now_update (EV_A);
2519}
2520
2521void
2522ev_resume (EV_P)
2523{
2524 ev_tstamp mn_prev = mn_now;
2525
2526 ev_now_update (EV_A);
2527 timers_reschedule (EV_A_ mn_now - mn_prev);
2528#if EV_PERIODIC_ENABLE
2529 /* TODO: really do this? */
2530 periodics_reschedule (EV_A);
2531#endif
2532}
2533
2058/*****************************************************************************/ 2534/*****************************************************************************/
2535/* singly-linked list management, used when the expected list length is short */
2059 2536
2060void inline_size 2537inline_size void
2061wlist_add (WL *head, WL elem) 2538wlist_add (WL *head, WL elem)
2062{ 2539{
2063 elem->next = *head; 2540 elem->next = *head;
2064 *head = elem; 2541 *head = elem;
2065} 2542}
2066 2543
2067void inline_size 2544inline_size void
2068wlist_del (WL *head, WL elem) 2545wlist_del (WL *head, WL elem)
2069{ 2546{
2070 while (*head) 2547 while (*head)
2071 { 2548 {
2072 if (*head == elem) 2549 if (expect_true (*head == elem))
2073 { 2550 {
2074 *head = elem->next; 2551 *head = elem->next;
2075 return; 2552 break;
2076 } 2553 }
2077 2554
2078 head = &(*head)->next; 2555 head = &(*head)->next;
2079 } 2556 }
2080} 2557}
2081 2558
2082void inline_speed 2559/* internal, faster, version of ev_clear_pending */
2560inline_speed void
2083clear_pending (EV_P_ W w) 2561clear_pending (EV_P_ W w)
2084{ 2562{
2085 if (w->pending) 2563 if (w->pending)
2086 { 2564 {
2087 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2565 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2088 w->pending = 0; 2566 w->pending = 0;
2089 } 2567 }
2090} 2568}
2091 2569
2092int 2570int
… …
2096 int pending = w_->pending; 2574 int pending = w_->pending;
2097 2575
2098 if (expect_true (pending)) 2576 if (expect_true (pending))
2099 { 2577 {
2100 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2578 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2579 p->w = (W)&pending_w;
2101 w_->pending = 0; 2580 w_->pending = 0;
2102 p->w = 0;
2103 return p->events; 2581 return p->events;
2104 } 2582 }
2105 else 2583 else
2106 return 0; 2584 return 0;
2107} 2585}
2108 2586
2109void inline_size 2587inline_size void
2110pri_adjust (EV_P_ W w) 2588pri_adjust (EV_P_ W w)
2111{ 2589{
2112 int pri = w->priority; 2590 int pri = ev_priority (w);
2113 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2591 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2114 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2592 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2115 w->priority = pri; 2593 ev_set_priority (w, pri);
2116} 2594}
2117 2595
2118void inline_speed 2596inline_speed void
2119ev_start (EV_P_ W w, int active) 2597ev_start (EV_P_ W w, int active)
2120{ 2598{
2121 pri_adjust (EV_A_ w); 2599 pri_adjust (EV_A_ w);
2122 w->active = active; 2600 w->active = active;
2123 ev_ref (EV_A); 2601 ev_ref (EV_A);
2124} 2602}
2125 2603
2126void inline_size 2604inline_size void
2127ev_stop (EV_P_ W w) 2605ev_stop (EV_P_ W w)
2128{ 2606{
2129 ev_unref (EV_A); 2607 ev_unref (EV_A);
2130 w->active = 0; 2608 w->active = 0;
2131} 2609}
… …
2138 int fd = w->fd; 2616 int fd = w->fd;
2139 2617
2140 if (expect_false (ev_is_active (w))) 2618 if (expect_false (ev_is_active (w)))
2141 return; 2619 return;
2142 2620
2143 assert (("ev_io_start called with negative fd", fd >= 0)); 2621 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2622 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2144 2623
2145 EV_FREQUENT_CHECK; 2624 EV_FREQUENT_CHECK;
2146 2625
2147 ev_start (EV_A_ (W)w, 1); 2626 ev_start (EV_A_ (W)w, 1);
2148 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2627 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2149 wlist_add (&anfds[fd].head, (WL)w); 2628 wlist_add (&anfds[fd].head, (WL)w);
2150 2629
2151 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2630 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2152 w->events &= ~EV_IOFDSET; 2631 w->events &= ~EV__IOFDSET;
2153 2632
2154 EV_FREQUENT_CHECK; 2633 EV_FREQUENT_CHECK;
2155} 2634}
2156 2635
2157void noinline 2636void noinline
… …
2159{ 2638{
2160 clear_pending (EV_A_ (W)w); 2639 clear_pending (EV_A_ (W)w);
2161 if (expect_false (!ev_is_active (w))) 2640 if (expect_false (!ev_is_active (w)))
2162 return; 2641 return;
2163 2642
2164 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2643 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2165 2644
2166 EV_FREQUENT_CHECK; 2645 EV_FREQUENT_CHECK;
2167 2646
2168 wlist_del (&anfds[w->fd].head, (WL)w); 2647 wlist_del (&anfds[w->fd].head, (WL)w);
2169 ev_stop (EV_A_ (W)w); 2648 ev_stop (EV_A_ (W)w);
2170 2649
2171 fd_change (EV_A_ w->fd, 1); 2650 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2172 2651
2173 EV_FREQUENT_CHECK; 2652 EV_FREQUENT_CHECK;
2174} 2653}
2175 2654
2176void noinline 2655void noinline
… …
2179 if (expect_false (ev_is_active (w))) 2658 if (expect_false (ev_is_active (w)))
2180 return; 2659 return;
2181 2660
2182 ev_at (w) += mn_now; 2661 ev_at (w) += mn_now;
2183 2662
2184 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2663 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2185 2664
2186 EV_FREQUENT_CHECK; 2665 EV_FREQUENT_CHECK;
2187 2666
2188 ++timercnt; 2667 ++timercnt;
2189 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2668 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2192 ANHE_at_cache (timers [ev_active (w)]); 2671 ANHE_at_cache (timers [ev_active (w)]);
2193 upheap (timers, ev_active (w)); 2672 upheap (timers, ev_active (w));
2194 2673
2195 EV_FREQUENT_CHECK; 2674 EV_FREQUENT_CHECK;
2196 2675
2197 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2676 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2198} 2677}
2199 2678
2200void noinline 2679void noinline
2201ev_timer_stop (EV_P_ ev_timer *w) 2680ev_timer_stop (EV_P_ ev_timer *w)
2202{ 2681{
… …
2207 EV_FREQUENT_CHECK; 2686 EV_FREQUENT_CHECK;
2208 2687
2209 { 2688 {
2210 int active = ev_active (w); 2689 int active = ev_active (w);
2211 2690
2212 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2691 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2213 2692
2214 --timercnt; 2693 --timercnt;
2215 2694
2216 if (expect_true (active < timercnt + HEAP0)) 2695 if (expect_true (active < timercnt + HEAP0))
2217 { 2696 {
2218 timers [active] = timers [timercnt + HEAP0]; 2697 timers [active] = timers [timercnt + HEAP0];
2219 adjustheap (timers, timercnt, active); 2698 adjustheap (timers, timercnt, active);
2220 } 2699 }
2221 } 2700 }
2222 2701
2223 EV_FREQUENT_CHECK;
2224
2225 ev_at (w) -= mn_now; 2702 ev_at (w) -= mn_now;
2226 2703
2227 ev_stop (EV_A_ (W)w); 2704 ev_stop (EV_A_ (W)w);
2705
2706 EV_FREQUENT_CHECK;
2228} 2707}
2229 2708
2230void noinline 2709void noinline
2231ev_timer_again (EV_P_ ev_timer *w) 2710ev_timer_again (EV_P_ ev_timer *w)
2232{ 2711{
… …
2250 } 2729 }
2251 2730
2252 EV_FREQUENT_CHECK; 2731 EV_FREQUENT_CHECK;
2253} 2732}
2254 2733
2734ev_tstamp
2735ev_timer_remaining (EV_P_ ev_timer *w)
2736{
2737 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2738}
2739
2255#if EV_PERIODIC_ENABLE 2740#if EV_PERIODIC_ENABLE
2256void noinline 2741void noinline
2257ev_periodic_start (EV_P_ ev_periodic *w) 2742ev_periodic_start (EV_P_ ev_periodic *w)
2258{ 2743{
2259 if (expect_false (ev_is_active (w))) 2744 if (expect_false (ev_is_active (w)))
… …
2261 2746
2262 if (w->reschedule_cb) 2747 if (w->reschedule_cb)
2263 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2748 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2264 else if (w->interval) 2749 else if (w->interval)
2265 { 2750 {
2266 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2751 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2267 /* this formula differs from the one in periodic_reify because we do not always round up */ 2752 /* this formula differs from the one in periodic_reify because we do not always round up */
2268 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2753 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2269 } 2754 }
2270 else 2755 else
2271 ev_at (w) = w->offset; 2756 ev_at (w) = w->offset;
… …
2279 ANHE_at_cache (periodics [ev_active (w)]); 2764 ANHE_at_cache (periodics [ev_active (w)]);
2280 upheap (periodics, ev_active (w)); 2765 upheap (periodics, ev_active (w));
2281 2766
2282 EV_FREQUENT_CHECK; 2767 EV_FREQUENT_CHECK;
2283 2768
2284 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2769 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2285} 2770}
2286 2771
2287void noinline 2772void noinline
2288ev_periodic_stop (EV_P_ ev_periodic *w) 2773ev_periodic_stop (EV_P_ ev_periodic *w)
2289{ 2774{
… …
2294 EV_FREQUENT_CHECK; 2779 EV_FREQUENT_CHECK;
2295 2780
2296 { 2781 {
2297 int active = ev_active (w); 2782 int active = ev_active (w);
2298 2783
2299 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2784 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2300 2785
2301 --periodiccnt; 2786 --periodiccnt;
2302 2787
2303 if (expect_true (active < periodiccnt + HEAP0)) 2788 if (expect_true (active < periodiccnt + HEAP0))
2304 { 2789 {
2305 periodics [active] = periodics [periodiccnt + HEAP0]; 2790 periodics [active] = periodics [periodiccnt + HEAP0];
2306 adjustheap (periodics, periodiccnt, active); 2791 adjustheap (periodics, periodiccnt, active);
2307 } 2792 }
2308 } 2793 }
2309 2794
2310 EV_FREQUENT_CHECK;
2311
2312 ev_stop (EV_A_ (W)w); 2795 ev_stop (EV_A_ (W)w);
2796
2797 EV_FREQUENT_CHECK;
2313} 2798}
2314 2799
2315void noinline 2800void noinline
2316ev_periodic_again (EV_P_ ev_periodic *w) 2801ev_periodic_again (EV_P_ ev_periodic *w)
2317{ 2802{
… …
2323 2808
2324#ifndef SA_RESTART 2809#ifndef SA_RESTART
2325# define SA_RESTART 0 2810# define SA_RESTART 0
2326#endif 2811#endif
2327 2812
2813#if EV_SIGNAL_ENABLE
2814
2328void noinline 2815void noinline
2329ev_signal_start (EV_P_ ev_signal *w) 2816ev_signal_start (EV_P_ ev_signal *w)
2330{ 2817{
2331#if EV_MULTIPLICITY
2332 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2333#endif
2334 if (expect_false (ev_is_active (w))) 2818 if (expect_false (ev_is_active (w)))
2335 return; 2819 return;
2336 2820
2337 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2821 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2338 2822
2339 evpipe_init (EV_A); 2823#if EV_MULTIPLICITY
2824 assert (("libev: a signal must not be attached to two different loops",
2825 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2340 2826
2341 EV_FREQUENT_CHECK; 2827 signals [w->signum - 1].loop = EV_A;
2828#endif
2342 2829
2830 EV_FREQUENT_CHECK;
2831
2832#if EV_USE_SIGNALFD
2833 if (sigfd == -2)
2343 { 2834 {
2344#ifndef _WIN32 2835 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2345 sigset_t full, prev; 2836 if (sigfd < 0 && errno == EINVAL)
2346 sigfillset (&full); 2837 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2347 sigprocmask (SIG_SETMASK, &full, &prev);
2348#endif
2349 2838
2350 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2839 if (sigfd >= 0)
2840 {
2841 fd_intern (sigfd); /* doing it twice will not hurt */
2351 2842
2352#ifndef _WIN32 2843 sigemptyset (&sigfd_set);
2353 sigprocmask (SIG_SETMASK, &prev, 0); 2844
2354#endif 2845 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2846 ev_set_priority (&sigfd_w, EV_MAXPRI);
2847 ev_io_start (EV_A_ &sigfd_w);
2848 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2849 }
2355 } 2850 }
2851
2852 if (sigfd >= 0)
2853 {
2854 /* TODO: check .head */
2855 sigaddset (&sigfd_set, w->signum);
2856 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2857
2858 signalfd (sigfd, &sigfd_set, 0);
2859 }
2860#endif
2356 2861
2357 ev_start (EV_A_ (W)w, 1); 2862 ev_start (EV_A_ (W)w, 1);
2358 wlist_add (&signals [w->signum - 1].head, (WL)w); 2863 wlist_add (&signals [w->signum - 1].head, (WL)w);
2359 2864
2360 if (!((WL)w)->next) 2865 if (!((WL)w)->next)
2866# if EV_USE_SIGNALFD
2867 if (sigfd < 0) /*TODO*/
2868# endif
2361 { 2869 {
2362#if _WIN32 2870# ifdef _WIN32
2871 evpipe_init (EV_A);
2872
2363 signal (w->signum, ev_sighandler); 2873 signal (w->signum, ev_sighandler);
2364#else 2874# else
2365 struct sigaction sa; 2875 struct sigaction sa;
2876
2877 evpipe_init (EV_A);
2878
2366 sa.sa_handler = ev_sighandler; 2879 sa.sa_handler = ev_sighandler;
2367 sigfillset (&sa.sa_mask); 2880 sigfillset (&sa.sa_mask);
2368 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2881 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2369 sigaction (w->signum, &sa, 0); 2882 sigaction (w->signum, &sa, 0);
2883
2884 sigemptyset (&sa.sa_mask);
2885 sigaddset (&sa.sa_mask, w->signum);
2886 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2370#endif 2887#endif
2371 } 2888 }
2372 2889
2373 EV_FREQUENT_CHECK; 2890 EV_FREQUENT_CHECK;
2374} 2891}
2375 2892
2376void noinline 2893void noinline
… …
2384 2901
2385 wlist_del (&signals [w->signum - 1].head, (WL)w); 2902 wlist_del (&signals [w->signum - 1].head, (WL)w);
2386 ev_stop (EV_A_ (W)w); 2903 ev_stop (EV_A_ (W)w);
2387 2904
2388 if (!signals [w->signum - 1].head) 2905 if (!signals [w->signum - 1].head)
2906 {
2907#if EV_MULTIPLICITY
2908 signals [w->signum - 1].loop = 0; /* unattach from signal */
2909#endif
2910#if EV_USE_SIGNALFD
2911 if (sigfd >= 0)
2912 {
2913 sigset_t ss;
2914
2915 sigemptyset (&ss);
2916 sigaddset (&ss, w->signum);
2917 sigdelset (&sigfd_set, w->signum);
2918
2919 signalfd (sigfd, &sigfd_set, 0);
2920 sigprocmask (SIG_UNBLOCK, &ss, 0);
2921 }
2922 else
2923#endif
2389 signal (w->signum, SIG_DFL); 2924 signal (w->signum, SIG_DFL);
2925 }
2390 2926
2391 EV_FREQUENT_CHECK; 2927 EV_FREQUENT_CHECK;
2392} 2928}
2929
2930#endif
2931
2932#if EV_CHILD_ENABLE
2393 2933
2394void 2934void
2395ev_child_start (EV_P_ ev_child *w) 2935ev_child_start (EV_P_ ev_child *w)
2396{ 2936{
2397#if EV_MULTIPLICITY 2937#if EV_MULTIPLICITY
2398 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2938 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2399#endif 2939#endif
2400 if (expect_false (ev_is_active (w))) 2940 if (expect_false (ev_is_active (w)))
2401 return; 2941 return;
2402 2942
2403 EV_FREQUENT_CHECK; 2943 EV_FREQUENT_CHECK;
2404 2944
2405 ev_start (EV_A_ (W)w, 1); 2945 ev_start (EV_A_ (W)w, 1);
2406 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2946 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2407 2947
2408 EV_FREQUENT_CHECK; 2948 EV_FREQUENT_CHECK;
2409} 2949}
2410 2950
2411void 2951void
… …
2415 if (expect_false (!ev_is_active (w))) 2955 if (expect_false (!ev_is_active (w)))
2416 return; 2956 return;
2417 2957
2418 EV_FREQUENT_CHECK; 2958 EV_FREQUENT_CHECK;
2419 2959
2420 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2960 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2421 ev_stop (EV_A_ (W)w); 2961 ev_stop (EV_A_ (W)w);
2422 2962
2423 EV_FREQUENT_CHECK; 2963 EV_FREQUENT_CHECK;
2424} 2964}
2965
2966#endif
2425 2967
2426#if EV_STAT_ENABLE 2968#if EV_STAT_ENABLE
2427 2969
2428# ifdef _WIN32 2970# ifdef _WIN32
2429# undef lstat 2971# undef lstat
2430# define lstat(a,b) _stati64 (a,b) 2972# define lstat(a,b) _stati64 (a,b)
2431# endif 2973# endif
2432 2974
2433#define DEF_STAT_INTERVAL 5.0074891 2975#define DEF_STAT_INTERVAL 5.0074891
2976#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2434#define MIN_STAT_INTERVAL 0.1074891 2977#define MIN_STAT_INTERVAL 0.1074891
2435 2978
2436static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2979static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2437 2980
2438#if EV_USE_INOTIFY 2981#if EV_USE_INOTIFY
2439# define EV_INOTIFY_BUFSIZE 8192 2982
2983/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2984# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2440 2985
2441static void noinline 2986static void noinline
2442infy_add (EV_P_ ev_stat *w) 2987infy_add (EV_P_ ev_stat *w)
2443{ 2988{
2444 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); 2989 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);
2445 2990
2446 if (w->wd < 0) 2991 if (w->wd >= 0)
2992 {
2993 struct statfs sfs;
2994
2995 /* now local changes will be tracked by inotify, but remote changes won't */
2996 /* unless the filesystem is known to be local, we therefore still poll */
2997 /* also do poll on <2.6.25, but with normal frequency */
2998
2999 if (!fs_2625)
3000 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3001 else if (!statfs (w->path, &sfs)
3002 && (sfs.f_type == 0x1373 /* devfs */
3003 || sfs.f_type == 0xEF53 /* ext2/3 */
3004 || sfs.f_type == 0x3153464a /* jfs */
3005 || sfs.f_type == 0x52654973 /* reiser3 */
3006 || sfs.f_type == 0x01021994 /* tempfs */
3007 || sfs.f_type == 0x58465342 /* xfs */))
3008 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3009 else
3010 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2447 { 3011 }
2448 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3012 else
3013 {
3014 /* can't use inotify, continue to stat */
3015 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2449 3016
2450 /* monitor some parent directory for speedup hints */ 3017 /* if path is not there, monitor some parent directory for speedup hints */
2451 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3018 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2452 /* but an efficiency issue only */ 3019 /* but an efficiency issue only */
2453 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3020 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2454 { 3021 {
2455 char path [4096]; 3022 char path [4096];
2456 strcpy (path, w->path); 3023 strcpy (path, w->path);
… …
2460 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3027 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2461 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3028 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2462 3029
2463 char *pend = strrchr (path, '/'); 3030 char *pend = strrchr (path, '/');
2464 3031
2465 if (!pend) 3032 if (!pend || pend == path)
2466 break; /* whoops, no '/', complain to your admin */ 3033 break;
2467 3034
2468 *pend = 0; 3035 *pend = 0;
2469 w->wd = inotify_add_watch (fs_fd, path, mask); 3036 w->wd = inotify_add_watch (fs_fd, path, mask);
2470 } 3037 }
2471 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3038 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2472 } 3039 }
2473 } 3040 }
2474 else
2475 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2476 3041
2477 if (w->wd >= 0) 3042 if (w->wd >= 0)
2478 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3043 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3044
3045 /* now re-arm timer, if required */
3046 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3047 ev_timer_again (EV_A_ &w->timer);
3048 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2479} 3049}
2480 3050
2481static void noinline 3051static void noinline
2482infy_del (EV_P_ ev_stat *w) 3052infy_del (EV_P_ ev_stat *w)
2483{ 3053{
… …
2486 3056
2487 if (wd < 0) 3057 if (wd < 0)
2488 return; 3058 return;
2489 3059
2490 w->wd = -2; 3060 w->wd = -2;
2491 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3061 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2492 wlist_del (&fs_hash [slot].head, (WL)w); 3062 wlist_del (&fs_hash [slot].head, (WL)w);
2493 3063
2494 /* remove this watcher, if others are watching it, they will rearm */ 3064 /* remove this watcher, if others are watching it, they will rearm */
2495 inotify_rm_watch (fs_fd, wd); 3065 inotify_rm_watch (fs_fd, wd);
2496} 3066}
… …
2498static void noinline 3068static void noinline
2499infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3069infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2500{ 3070{
2501 if (slot < 0) 3071 if (slot < 0)
2502 /* overflow, need to check for all hash slots */ 3072 /* overflow, need to check for all hash slots */
2503 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3073 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2504 infy_wd (EV_A_ slot, wd, ev); 3074 infy_wd (EV_A_ slot, wd, ev);
2505 else 3075 else
2506 { 3076 {
2507 WL w_; 3077 WL w_;
2508 3078
2509 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3079 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2510 { 3080 {
2511 ev_stat *w = (ev_stat *)w_; 3081 ev_stat *w = (ev_stat *)w_;
2512 w_ = w_->next; /* lets us remove this watcher and all before it */ 3082 w_ = w_->next; /* lets us remove this watcher and all before it */
2513 3083
2514 if (w->wd == wd || wd == -1) 3084 if (w->wd == wd || wd == -1)
2515 { 3085 {
2516 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3086 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2517 { 3087 {
3088 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2518 w->wd = -1; 3089 w->wd = -1;
2519 infy_add (EV_A_ w); /* re-add, no matter what */ 3090 infy_add (EV_A_ w); /* re-add, no matter what */
2520 } 3091 }
2521 3092
2522 stat_timer_cb (EV_A_ &w->timer, 0); 3093 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2527 3098
2528static void 3099static void
2529infy_cb (EV_P_ ev_io *w, int revents) 3100infy_cb (EV_P_ ev_io *w, int revents)
2530{ 3101{
2531 char buf [EV_INOTIFY_BUFSIZE]; 3102 char buf [EV_INOTIFY_BUFSIZE];
2532 struct inotify_event *ev = (struct inotify_event *)buf;
2533 int ofs; 3103 int ofs;
2534 int len = read (fs_fd, buf, sizeof (buf)); 3104 int len = read (fs_fd, buf, sizeof (buf));
2535 3105
2536 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3106 for (ofs = 0; ofs < len; )
3107 {
3108 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2537 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3109 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3110 ofs += sizeof (struct inotify_event) + ev->len;
3111 }
2538} 3112}
2539 3113
2540void inline_size 3114inline_size void
2541infy_init (EV_P) 3115ev_check_2625 (EV_P)
2542{ 3116{
2543 if (fs_fd != -2)
2544 return;
2545
2546 /* kernels < 2.6.25 are borked 3117 /* kernels < 2.6.25 are borked
2547 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3118 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2548 */ 3119 */
2549 { 3120 if (ev_linux_version () < 0x020619)
2550 struct utsname buf; 3121 return;
2551 int major, minor, micro;
2552 3122
3123 fs_2625 = 1;
3124}
3125
3126inline_size int
3127infy_newfd (void)
3128{
3129#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3130 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3131 if (fd >= 0)
3132 return fd;
3133#endif
3134 return inotify_init ();
3135}
3136
3137inline_size void
3138infy_init (EV_P)
3139{
3140 if (fs_fd != -2)
3141 return;
3142
2553 fs_fd = -1; 3143 fs_fd = -1;
2554 3144
2555 if (uname (&buf)) 3145 ev_check_2625 (EV_A);
2556 return;
2557 3146
2558 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2559 return;
2560
2561 if (major < 2
2562 || (major == 2 && minor < 6)
2563 || (major == 2 && minor == 6 && micro < 25))
2564 return;
2565 }
2566
2567 fs_fd = inotify_init (); 3147 fs_fd = infy_newfd ();
2568 3148
2569 if (fs_fd >= 0) 3149 if (fs_fd >= 0)
2570 { 3150 {
3151 fd_intern (fs_fd);
2571 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3152 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2572 ev_set_priority (&fs_w, EV_MAXPRI); 3153 ev_set_priority (&fs_w, EV_MAXPRI);
2573 ev_io_start (EV_A_ &fs_w); 3154 ev_io_start (EV_A_ &fs_w);
3155 ev_unref (EV_A);
2574 } 3156 }
2575} 3157}
2576 3158
2577void inline_size 3159inline_size void
2578infy_fork (EV_P) 3160infy_fork (EV_P)
2579{ 3161{
2580 int slot; 3162 int slot;
2581 3163
2582 if (fs_fd < 0) 3164 if (fs_fd < 0)
2583 return; 3165 return;
2584 3166
3167 ev_ref (EV_A);
3168 ev_io_stop (EV_A_ &fs_w);
2585 close (fs_fd); 3169 close (fs_fd);
2586 fs_fd = inotify_init (); 3170 fs_fd = infy_newfd ();
2587 3171
3172 if (fs_fd >= 0)
3173 {
3174 fd_intern (fs_fd);
3175 ev_io_set (&fs_w, fs_fd, EV_READ);
3176 ev_io_start (EV_A_ &fs_w);
3177 ev_unref (EV_A);
3178 }
3179
2588 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3180 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2589 { 3181 {
2590 WL w_ = fs_hash [slot].head; 3182 WL w_ = fs_hash [slot].head;
2591 fs_hash [slot].head = 0; 3183 fs_hash [slot].head = 0;
2592 3184
2593 while (w_) 3185 while (w_)
… …
2598 w->wd = -1; 3190 w->wd = -1;
2599 3191
2600 if (fs_fd >= 0) 3192 if (fs_fd >= 0)
2601 infy_add (EV_A_ w); /* re-add, no matter what */ 3193 infy_add (EV_A_ w); /* re-add, no matter what */
2602 else 3194 else
3195 {
3196 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3197 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2603 ev_timer_start (EV_A_ &w->timer); 3198 ev_timer_again (EV_A_ &w->timer);
3199 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3200 }
2604 } 3201 }
2605 } 3202 }
2606} 3203}
2607 3204
2608#endif 3205#endif
… …
2625static void noinline 3222static void noinline
2626stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3223stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2627{ 3224{
2628 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3225 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2629 3226
2630 /* we copy this here each the time so that */ 3227 ev_statdata prev = w->attr;
2631 /* prev has the old value when the callback gets invoked */
2632 w->prev = w->attr;
2633 ev_stat_stat (EV_A_ w); 3228 ev_stat_stat (EV_A_ w);
2634 3229
2635 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3230 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2636 if ( 3231 if (
2637 w->prev.st_dev != w->attr.st_dev 3232 prev.st_dev != w->attr.st_dev
2638 || w->prev.st_ino != w->attr.st_ino 3233 || prev.st_ino != w->attr.st_ino
2639 || w->prev.st_mode != w->attr.st_mode 3234 || prev.st_mode != w->attr.st_mode
2640 || w->prev.st_nlink != w->attr.st_nlink 3235 || prev.st_nlink != w->attr.st_nlink
2641 || w->prev.st_uid != w->attr.st_uid 3236 || prev.st_uid != w->attr.st_uid
2642 || w->prev.st_gid != w->attr.st_gid 3237 || prev.st_gid != w->attr.st_gid
2643 || w->prev.st_rdev != w->attr.st_rdev 3238 || prev.st_rdev != w->attr.st_rdev
2644 || w->prev.st_size != w->attr.st_size 3239 || prev.st_size != w->attr.st_size
2645 || w->prev.st_atime != w->attr.st_atime 3240 || prev.st_atime != w->attr.st_atime
2646 || w->prev.st_mtime != w->attr.st_mtime 3241 || prev.st_mtime != w->attr.st_mtime
2647 || w->prev.st_ctime != w->attr.st_ctime 3242 || prev.st_ctime != w->attr.st_ctime
2648 ) { 3243 ) {
3244 /* we only update w->prev on actual differences */
3245 /* in case we test more often than invoke the callback, */
3246 /* to ensure that prev is always different to attr */
3247 w->prev = prev;
3248
2649 #if EV_USE_INOTIFY 3249 #if EV_USE_INOTIFY
2650 if (fs_fd >= 0) 3250 if (fs_fd >= 0)
2651 { 3251 {
2652 infy_del (EV_A_ w); 3252 infy_del (EV_A_ w);
2653 infy_add (EV_A_ w); 3253 infy_add (EV_A_ w);
… …
2663ev_stat_start (EV_P_ ev_stat *w) 3263ev_stat_start (EV_P_ ev_stat *w)
2664{ 3264{
2665 if (expect_false (ev_is_active (w))) 3265 if (expect_false (ev_is_active (w)))
2666 return; 3266 return;
2667 3267
2668 /* since we use memcmp, we need to clear any padding data etc. */
2669 memset (&w->prev, 0, sizeof (ev_statdata));
2670 memset (&w->attr, 0, sizeof (ev_statdata));
2671
2672 ev_stat_stat (EV_A_ w); 3268 ev_stat_stat (EV_A_ w);
2673 3269
3270 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2674 if (w->interval < MIN_STAT_INTERVAL) 3271 w->interval = MIN_STAT_INTERVAL;
2675 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2676 3272
2677 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3273 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2678 ev_set_priority (&w->timer, ev_priority (w)); 3274 ev_set_priority (&w->timer, ev_priority (w));
2679 3275
2680#if EV_USE_INOTIFY 3276#if EV_USE_INOTIFY
2681 infy_init (EV_A); 3277 infy_init (EV_A);
2682 3278
2683 if (fs_fd >= 0) 3279 if (fs_fd >= 0)
2684 infy_add (EV_A_ w); 3280 infy_add (EV_A_ w);
2685 else 3281 else
2686#endif 3282#endif
3283 {
2687 ev_timer_start (EV_A_ &w->timer); 3284 ev_timer_again (EV_A_ &w->timer);
3285 ev_unref (EV_A);
3286 }
2688 3287
2689 ev_start (EV_A_ (W)w, 1); 3288 ev_start (EV_A_ (W)w, 1);
2690 3289
2691 EV_FREQUENT_CHECK; 3290 EV_FREQUENT_CHECK;
2692} 3291}
… …
2701 EV_FREQUENT_CHECK; 3300 EV_FREQUENT_CHECK;
2702 3301
2703#if EV_USE_INOTIFY 3302#if EV_USE_INOTIFY
2704 infy_del (EV_A_ w); 3303 infy_del (EV_A_ w);
2705#endif 3304#endif
3305
3306 if (ev_is_active (&w->timer))
3307 {
3308 ev_ref (EV_A);
2706 ev_timer_stop (EV_A_ &w->timer); 3309 ev_timer_stop (EV_A_ &w->timer);
3310 }
2707 3311
2708 ev_stop (EV_A_ (W)w); 3312 ev_stop (EV_A_ (W)w);
2709 3313
2710 EV_FREQUENT_CHECK; 3314 EV_FREQUENT_CHECK;
2711} 3315}
… …
2756 3360
2757 EV_FREQUENT_CHECK; 3361 EV_FREQUENT_CHECK;
2758} 3362}
2759#endif 3363#endif
2760 3364
3365#if EV_PREPARE_ENABLE
2761void 3366void
2762ev_prepare_start (EV_P_ ev_prepare *w) 3367ev_prepare_start (EV_P_ ev_prepare *w)
2763{ 3368{
2764 if (expect_false (ev_is_active (w))) 3369 if (expect_false (ev_is_active (w)))
2765 return; 3370 return;
… …
2791 3396
2792 ev_stop (EV_A_ (W)w); 3397 ev_stop (EV_A_ (W)w);
2793 3398
2794 EV_FREQUENT_CHECK; 3399 EV_FREQUENT_CHECK;
2795} 3400}
3401#endif
2796 3402
3403#if EV_CHECK_ENABLE
2797void 3404void
2798ev_check_start (EV_P_ ev_check *w) 3405ev_check_start (EV_P_ ev_check *w)
2799{ 3406{
2800 if (expect_false (ev_is_active (w))) 3407 if (expect_false (ev_is_active (w)))
2801 return; 3408 return;
… …
2827 3434
2828 ev_stop (EV_A_ (W)w); 3435 ev_stop (EV_A_ (W)w);
2829 3436
2830 EV_FREQUENT_CHECK; 3437 EV_FREQUENT_CHECK;
2831} 3438}
3439#endif
2832 3440
2833#if EV_EMBED_ENABLE 3441#if EV_EMBED_ENABLE
2834void noinline 3442void noinline
2835ev_embed_sweep (EV_P_ ev_embed *w) 3443ev_embed_sweep (EV_P_ ev_embed *w)
2836{ 3444{
2837 ev_loop (w->other, EVLOOP_NONBLOCK); 3445 ev_run (w->other, EVRUN_NOWAIT);
2838} 3446}
2839 3447
2840static void 3448static void
2841embed_io_cb (EV_P_ ev_io *io, int revents) 3449embed_io_cb (EV_P_ ev_io *io, int revents)
2842{ 3450{
2843 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3451 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2844 3452
2845 if (ev_cb (w)) 3453 if (ev_cb (w))
2846 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3454 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2847 else 3455 else
2848 ev_loop (w->other, EVLOOP_NONBLOCK); 3456 ev_run (w->other, EVRUN_NOWAIT);
2849} 3457}
2850 3458
2851static void 3459static void
2852embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3460embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2853{ 3461{
2854 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3462 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2855 3463
2856 { 3464 {
2857 struct ev_loop *loop = w->other; 3465 EV_P = w->other;
2858 3466
2859 while (fdchangecnt) 3467 while (fdchangecnt)
2860 { 3468 {
2861 fd_reify (EV_A); 3469 fd_reify (EV_A);
2862 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3470 ev_run (EV_A_ EVRUN_NOWAIT);
2863 } 3471 }
2864 } 3472 }
2865} 3473}
2866 3474
2867static void 3475static void
2868embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3476embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2869{ 3477{
2870 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3478 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2871 3479
3480 ev_embed_stop (EV_A_ w);
3481
2872 { 3482 {
2873 struct ev_loop *loop = w->other; 3483 EV_P = w->other;
2874 3484
2875 ev_loop_fork (EV_A); 3485 ev_loop_fork (EV_A);
3486 ev_run (EV_A_ EVRUN_NOWAIT);
2876 } 3487 }
3488
3489 ev_embed_start (EV_A_ w);
2877} 3490}
2878 3491
2879#if 0 3492#if 0
2880static void 3493static void
2881embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3494embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2889{ 3502{
2890 if (expect_false (ev_is_active (w))) 3503 if (expect_false (ev_is_active (w)))
2891 return; 3504 return;
2892 3505
2893 { 3506 {
2894 struct ev_loop *loop = w->other; 3507 EV_P = w->other;
2895 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3508 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2896 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3509 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2897 } 3510 }
2898 3511
2899 EV_FREQUENT_CHECK; 3512 EV_FREQUENT_CHECK;
2900 3513
… …
2926 3539
2927 ev_io_stop (EV_A_ &w->io); 3540 ev_io_stop (EV_A_ &w->io);
2928 ev_prepare_stop (EV_A_ &w->prepare); 3541 ev_prepare_stop (EV_A_ &w->prepare);
2929 ev_fork_stop (EV_A_ &w->fork); 3542 ev_fork_stop (EV_A_ &w->fork);
2930 3543
3544 ev_stop (EV_A_ (W)w);
3545
2931 EV_FREQUENT_CHECK; 3546 EV_FREQUENT_CHECK;
2932} 3547}
2933#endif 3548#endif
2934 3549
2935#if EV_FORK_ENABLE 3550#if EV_FORK_ENABLE
… …
2968 3583
2969 EV_FREQUENT_CHECK; 3584 EV_FREQUENT_CHECK;
2970} 3585}
2971#endif 3586#endif
2972 3587
2973#if EV_ASYNC_ENABLE 3588#if EV_CLEANUP_ENABLE
2974void 3589void
2975ev_async_start (EV_P_ ev_async *w) 3590ev_cleanup_start (EV_P_ ev_cleanup *w)
2976{ 3591{
2977 if (expect_false (ev_is_active (w))) 3592 if (expect_false (ev_is_active (w)))
2978 return; 3593 return;
3594
3595 EV_FREQUENT_CHECK;
3596
3597 ev_start (EV_A_ (W)w, ++cleanupcnt);
3598 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3599 cleanups [cleanupcnt - 1] = w;
3600
3601 /* cleanup watchers should never keep a refcount on the loop */
3602 ev_unref (EV_A);
3603 EV_FREQUENT_CHECK;
3604}
3605
3606void
3607ev_cleanup_stop (EV_P_ ev_cleanup *w)
3608{
3609 clear_pending (EV_A_ (W)w);
3610 if (expect_false (!ev_is_active (w)))
3611 return;
3612
3613 EV_FREQUENT_CHECK;
3614 ev_ref (EV_A);
3615
3616 {
3617 int active = ev_active (w);
3618
3619 cleanups [active - 1] = cleanups [--cleanupcnt];
3620 ev_active (cleanups [active - 1]) = active;
3621 }
3622
3623 ev_stop (EV_A_ (W)w);
3624
3625 EV_FREQUENT_CHECK;
3626}
3627#endif
3628
3629#if EV_ASYNC_ENABLE
3630void
3631ev_async_start (EV_P_ ev_async *w)
3632{
3633 if (expect_false (ev_is_active (w)))
3634 return;
3635
3636 w->sent = 0;
2979 3637
2980 evpipe_init (EV_A); 3638 evpipe_init (EV_A);
2981 3639
2982 EV_FREQUENT_CHECK; 3640 EV_FREQUENT_CHECK;
2983 3641
… …
3011 3669
3012void 3670void
3013ev_async_send (EV_P_ ev_async *w) 3671ev_async_send (EV_P_ ev_async *w)
3014{ 3672{
3015 w->sent = 1; 3673 w->sent = 1;
3016 evpipe_write (EV_A_ &gotasync); 3674 evpipe_write (EV_A_ &async_pending);
3017} 3675}
3018#endif 3676#endif
3019 3677
3020/*****************************************************************************/ 3678/*****************************************************************************/
3021 3679
… …
3061{ 3719{
3062 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3720 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3063 3721
3064 if (expect_false (!once)) 3722 if (expect_false (!once))
3065 { 3723 {
3066 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3724 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3067 return; 3725 return;
3068 } 3726 }
3069 3727
3070 once->cb = cb; 3728 once->cb = cb;
3071 once->arg = arg; 3729 once->arg = arg;
… …
3083 ev_timer_set (&once->to, timeout, 0.); 3741 ev_timer_set (&once->to, timeout, 0.);
3084 ev_timer_start (EV_A_ &once->to); 3742 ev_timer_start (EV_A_ &once->to);
3085 } 3743 }
3086} 3744}
3087 3745
3746/*****************************************************************************/
3747
3748#if EV_WALK_ENABLE
3749void
3750ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3751{
3752 int i, j;
3753 ev_watcher_list *wl, *wn;
3754
3755 if (types & (EV_IO | EV_EMBED))
3756 for (i = 0; i < anfdmax; ++i)
3757 for (wl = anfds [i].head; wl; )
3758 {
3759 wn = wl->next;
3760
3761#if EV_EMBED_ENABLE
3762 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3763 {
3764 if (types & EV_EMBED)
3765 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3766 }
3767 else
3768#endif
3769#if EV_USE_INOTIFY
3770 if (ev_cb ((ev_io *)wl) == infy_cb)
3771 ;
3772 else
3773#endif
3774 if ((ev_io *)wl != &pipe_w)
3775 if (types & EV_IO)
3776 cb (EV_A_ EV_IO, wl);
3777
3778 wl = wn;
3779 }
3780
3781 if (types & (EV_TIMER | EV_STAT))
3782 for (i = timercnt + HEAP0; i-- > HEAP0; )
3783#if EV_STAT_ENABLE
3784 /*TODO: timer is not always active*/
3785 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3786 {
3787 if (types & EV_STAT)
3788 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3789 }
3790 else
3791#endif
3792 if (types & EV_TIMER)
3793 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3794
3795#if EV_PERIODIC_ENABLE
3796 if (types & EV_PERIODIC)
3797 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3798 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3799#endif
3800
3801#if EV_IDLE_ENABLE
3802 if (types & EV_IDLE)
3803 for (j = NUMPRI; i--; )
3804 for (i = idlecnt [j]; i--; )
3805 cb (EV_A_ EV_IDLE, idles [j][i]);
3806#endif
3807
3808#if EV_FORK_ENABLE
3809 if (types & EV_FORK)
3810 for (i = forkcnt; i--; )
3811 if (ev_cb (forks [i]) != embed_fork_cb)
3812 cb (EV_A_ EV_FORK, forks [i]);
3813#endif
3814
3815#if EV_ASYNC_ENABLE
3816 if (types & EV_ASYNC)
3817 for (i = asynccnt; i--; )
3818 cb (EV_A_ EV_ASYNC, asyncs [i]);
3819#endif
3820
3821#if EV_PREPARE_ENABLE
3822 if (types & EV_PREPARE)
3823 for (i = preparecnt; i--; )
3824# if EV_EMBED_ENABLE
3825 if (ev_cb (prepares [i]) != embed_prepare_cb)
3826# endif
3827 cb (EV_A_ EV_PREPARE, prepares [i]);
3828#endif
3829
3830#if EV_CHECK_ENABLE
3831 if (types & EV_CHECK)
3832 for (i = checkcnt; i--; )
3833 cb (EV_A_ EV_CHECK, checks [i]);
3834#endif
3835
3836#if EV_SIGNAL_ENABLE
3837 if (types & EV_SIGNAL)
3838 for (i = 0; i < EV_NSIG - 1; ++i)
3839 for (wl = signals [i].head; wl; )
3840 {
3841 wn = wl->next;
3842 cb (EV_A_ EV_SIGNAL, wl);
3843 wl = wn;
3844 }
3845#endif
3846
3847#if EV_CHILD_ENABLE
3848 if (types & EV_CHILD)
3849 for (i = (EV_PID_HASHSIZE); i--; )
3850 for (wl = childs [i]; wl; )
3851 {
3852 wn = wl->next;
3853 cb (EV_A_ EV_CHILD, wl);
3854 wl = wn;
3855 }
3856#endif
3857/* EV_STAT 0x00001000 /* stat data changed */
3858/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3859}
3860#endif
3861
3088#if EV_MULTIPLICITY 3862#if EV_MULTIPLICITY
3089 #include "ev_wrap.h" 3863 #include "ev_wrap.h"
3090#endif 3864#endif
3091 3865
3092#ifdef __cplusplus 3866EV_CPP(})
3093}
3094#endif
3095 3867

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