ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.271 by root, Mon Nov 3 12:13:15 2008 UTC vs.
Revision 1.356 by root, Fri Oct 22 11:21:52 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>
292# include <sys/statfs.h> 387# include <sys/statfs.h>
293# include <sys/inotify.h> 388# include <sys/inotify.h>
294/* 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 */
295# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
296# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
… …
303#endif 398#endif
304 399
305#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
306/* 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 */
307# include <stdint.h> 402# include <stdint.h>
308# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
309extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
310# endif 405# endif
311int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
312# ifdef __cplusplus 407# ifdef O_CLOEXEC
313} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
314# 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};
315#endif 436#endif
316 437
317/**/ 438/**/
318 439
319#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
320# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
321#else 442#else
322# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
323#endif 444#endif
324 445
325/* 446/*
… …
332 */ 453 */
333#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
334 455
335#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) */
336#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) */
337/*#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)
338 461
339#if __GNUC__ >= 4 462#if __GNUC__ >= 4
340# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
341# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
342#else 465#else
… …
349 472
350#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
351#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
352#define inline_size static inline 475#define inline_size static inline
353 476
354#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
355# 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)
356#else 487#else
357# define inline_speed static inline
358#endif
359
360#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
361#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
362 490
363#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
364#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
365 493
366typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
368typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
369 497
370#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
371#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
372 500
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
373#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
374/* sig_atomic_t is used to avoid per-thread variables or locking but still */
375/* giving it a reasonably high chance of working on typical architetcures */
376static 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)
377#endif 519#endif
378 520
379#ifdef _WIN32 521#ifdef _WIN32
380# include "ev_win32.c" 522# include "ev_win32.c"
381#endif 523#endif
382 524
383/*****************************************************************************/ 525/*****************************************************************************/
526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 struct utsname buf;
536 unsigned int v;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
384 576
385static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
386 578
387void 579void
388ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
… …
398 590
399 if (syserr_cb) 591 if (syserr_cb)
400 syserr_cb (msg); 592 syserr_cb (msg);
401 else 593 else
402 { 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
403 perror (msg); 603 perror (msg);
604#endif
404 abort (); 605 abort ();
405 } 606 }
406} 607}
407 608
408static void * 609static void *
409ev_realloc_emul (void *ptr, long size) 610ev_realloc_emul (void *ptr, long size)
410{ 611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
411 /* some systems, notably openbsd and darwin, fail to properly 615 /* some systems, notably openbsd and darwin, fail to properly
412 * 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
413 * the single unix specification, so work around them here. 617 * the single unix specification, so work around them here.
414 */ 618 */
415 619
416 if (size) 620 if (size)
417 return realloc (ptr, size); 621 return realloc (ptr, size);
418 622
419 free (ptr); 623 free (ptr);
420 return 0; 624 return 0;
625#endif
421} 626}
422 627
423static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
424 629
425void 630void
… …
433{ 638{
434 ptr = alloc (ptr, size); 639 ptr = alloc (ptr, size);
435 640
436 if (!ptr && size) 641 if (!ptr && size)
437 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
438 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
439 abort (); 648 abort ();
440 } 649 }
441 650
442 return ptr; 651 return ptr;
443} 652}
… …
445#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
446#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
447 656
448/*****************************************************************************/ 657/*****************************************************************************/
449 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
450typedef struct 663typedef struct
451{ 664{
452 WL head; 665 WL head;
453 unsigned char events; 666 unsigned char events; /* the events watched for */
454 unsigned char reify; 667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
455 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
456 unsigned char unused; 669 unsigned char unused;
457#if EV_USE_EPOLL 670#if EV_USE_EPOLL
458 unsigned int egen; /* generation counter to counter epoll bugs */ 671 unsigned int egen; /* generation counter to counter epoll bugs */
459#endif 672#endif
460#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET
461 SOCKET handle; 674 SOCKET handle;
462#endif 675#endif
463} ANFD; 676} ANFD;
464 677
678/* stores the pending event set for a given watcher */
465typedef struct 679typedef struct
466{ 680{
467 W w; 681 W w;
468 int events; 682 int events; /* the pending event set for the given watcher */
469} ANPENDING; 683} ANPENDING;
470 684
471#if EV_USE_INOTIFY 685#if EV_USE_INOTIFY
472/* hash table entry per inotify-id */ 686/* hash table entry per inotify-id */
473typedef struct 687typedef struct
… …
476} ANFS; 690} ANFS;
477#endif 691#endif
478 692
479/* Heap Entry */ 693/* Heap Entry */
480#if EV_HEAP_CACHE_AT 694#if EV_HEAP_CACHE_AT
695 /* a heap element */
481 typedef struct { 696 typedef struct {
482 ev_tstamp at; 697 ev_tstamp at;
483 WT w; 698 WT w;
484 } ANHE; 699 } ANHE;
485 700
486 #define ANHE_w(he) (he).w /* access watcher, read-write */ 701 #define ANHE_w(he) (he).w /* access watcher, read-write */
487 #define ANHE_at(he) (he).at /* access cached at, read-only */ 702 #define ANHE_at(he) (he).at /* access cached at, read-only */
488 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 703 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
489#else 704#else
705 /* a heap element */
490 typedef WT ANHE; 706 typedef WT ANHE;
491 707
492 #define ANHE_w(he) (he) 708 #define ANHE_w(he) (he)
493 #define ANHE_at(he) (he)->at 709 #define ANHE_at(he) (he)->at
494 #define ANHE_at_cache(he) 710 #define ANHE_at_cache(he)
… …
518 734
519 static int ev_default_loop_ptr; 735 static int ev_default_loop_ptr;
520 736
521#endif 737#endif
522 738
739#if EV_FEATURE_API
740# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
741# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
742# define EV_INVOKE_PENDING invoke_cb (EV_A)
743#else
744# define EV_RELEASE_CB (void)0
745# define EV_ACQUIRE_CB (void)0
746# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
747#endif
748
749#define EVBREAK_RECURSE 0x80
750
523/*****************************************************************************/ 751/*****************************************************************************/
524 752
753#ifndef EV_HAVE_EV_TIME
525ev_tstamp 754ev_tstamp
526ev_time (void) 755ev_time (void)
527{ 756{
528#if EV_USE_REALTIME 757#if EV_USE_REALTIME
758 if (expect_true (have_realtime))
759 {
529 struct timespec ts; 760 struct timespec ts;
530 clock_gettime (CLOCK_REALTIME, &ts); 761 clock_gettime (CLOCK_REALTIME, &ts);
531 return ts.tv_sec + ts.tv_nsec * 1e-9; 762 return ts.tv_sec + ts.tv_nsec * 1e-9;
532#else 763 }
764#endif
765
533 struct timeval tv; 766 struct timeval tv;
534 gettimeofday (&tv, 0); 767 gettimeofday (&tv, 0);
535 return tv.tv_sec + tv.tv_usec * 1e-6; 768 return tv.tv_sec + tv.tv_usec * 1e-6;
536#endif
537} 769}
770#endif
538 771
539ev_tstamp inline_size 772inline_size ev_tstamp
540get_clock (void) 773get_clock (void)
541{ 774{
542#if EV_USE_MONOTONIC 775#if EV_USE_MONOTONIC
543 if (expect_true (have_monotonic)) 776 if (expect_true (have_monotonic))
544 { 777 {
… …
565 if (delay > 0.) 798 if (delay > 0.)
566 { 799 {
567#if EV_USE_NANOSLEEP 800#if EV_USE_NANOSLEEP
568 struct timespec ts; 801 struct timespec ts;
569 802
570 ts.tv_sec = (time_t)delay; 803 EV_TS_SET (ts, delay);
571 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
572
573 nanosleep (&ts, 0); 804 nanosleep (&ts, 0);
574#elif defined(_WIN32) 805#elif defined(_WIN32)
575 Sleep ((unsigned long)(delay * 1e3)); 806 Sleep ((unsigned long)(delay * 1e3));
576#else 807#else
577 struct timeval tv; 808 struct timeval tv;
578 809
579 tv.tv_sec = (time_t)delay;
580 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
581
582 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 810 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
583 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 811 /* something not guaranteed by newer posix versions, but guaranteed */
584 /* by older ones */ 812 /* by older ones */
813 EV_TV_SET (tv, delay);
585 select (0, 0, 0, 0, &tv); 814 select (0, 0, 0, 0, &tv);
586#endif 815#endif
587 } 816 }
588} 817}
589 818
590/*****************************************************************************/ 819/*****************************************************************************/
591 820
592#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 821#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
593 822
594int inline_size 823/* find a suitable new size for the given array, */
824/* hopefully by rounding to a nice-to-malloc size */
825inline_size int
595array_nextsize (int elem, int cur, int cnt) 826array_nextsize (int elem, int cur, int cnt)
596{ 827{
597 int ncur = cur + 1; 828 int ncur = cur + 1;
598 829
599 do 830 do
… …
640 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 871 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
641 } 872 }
642#endif 873#endif
643 874
644#define array_free(stem, idx) \ 875#define array_free(stem, idx) \
645 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 876 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
646 877
647/*****************************************************************************/ 878/*****************************************************************************/
879
880/* dummy callback for pending events */
881static void noinline
882pendingcb (EV_P_ ev_prepare *w, int revents)
883{
884}
648 885
649void noinline 886void noinline
650ev_feed_event (EV_P_ void *w, int revents) 887ev_feed_event (EV_P_ void *w, int revents)
651{ 888{
652 W w_ = (W)w; 889 W w_ = (W)w;
… …
661 pendings [pri][w_->pending - 1].w = w_; 898 pendings [pri][w_->pending - 1].w = w_;
662 pendings [pri][w_->pending - 1].events = revents; 899 pendings [pri][w_->pending - 1].events = revents;
663 } 900 }
664} 901}
665 902
666void inline_speed 903inline_speed void
904feed_reverse (EV_P_ W w)
905{
906 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
907 rfeeds [rfeedcnt++] = w;
908}
909
910inline_size void
911feed_reverse_done (EV_P_ int revents)
912{
913 do
914 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
915 while (rfeedcnt);
916}
917
918inline_speed void
667queue_events (EV_P_ W *events, int eventcnt, int type) 919queue_events (EV_P_ W *events, int eventcnt, int type)
668{ 920{
669 int i; 921 int i;
670 922
671 for (i = 0; i < eventcnt; ++i) 923 for (i = 0; i < eventcnt; ++i)
672 ev_feed_event (EV_A_ events [i], type); 924 ev_feed_event (EV_A_ events [i], type);
673} 925}
674 926
675/*****************************************************************************/ 927/*****************************************************************************/
676 928
677void inline_speed 929inline_speed void
678fd_event (EV_P_ int fd, int revents) 930fd_event_nocheck (EV_P_ int fd, int revents)
679{ 931{
680 ANFD *anfd = anfds + fd; 932 ANFD *anfd = anfds + fd;
681 ev_io *w; 933 ev_io *w;
682 934
683 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 935 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
687 if (ev) 939 if (ev)
688 ev_feed_event (EV_A_ (W)w, ev); 940 ev_feed_event (EV_A_ (W)w, ev);
689 } 941 }
690} 942}
691 943
944/* do not submit kernel events for fds that have reify set */
945/* because that means they changed while we were polling for new events */
946inline_speed void
947fd_event (EV_P_ int fd, int revents)
948{
949 ANFD *anfd = anfds + fd;
950
951 if (expect_true (!anfd->reify))
952 fd_event_nocheck (EV_A_ fd, revents);
953}
954
692void 955void
693ev_feed_fd_event (EV_P_ int fd, int revents) 956ev_feed_fd_event (EV_P_ int fd, int revents)
694{ 957{
695 if (fd >= 0 && fd < anfdmax) 958 if (fd >= 0 && fd < anfdmax)
696 fd_event (EV_A_ fd, revents); 959 fd_event_nocheck (EV_A_ fd, revents);
697} 960}
698 961
699void inline_size 962/* make sure the external fd watch events are in-sync */
963/* with the kernel/libev internal state */
964inline_size void
700fd_reify (EV_P) 965fd_reify (EV_P)
701{ 966{
702 int i; 967 int i;
703 968
704 for (i = 0; i < fdchangecnt; ++i) 969 for (i = 0; i < fdchangecnt; ++i)
705 { 970 {
706 int fd = fdchanges [i]; 971 int fd = fdchanges [i];
707 ANFD *anfd = anfds + fd; 972 ANFD *anfd = anfds + fd;
708 ev_io *w; 973 ev_io *w;
709 974
710 unsigned char events = 0; 975 unsigned char o_events = anfd->events;
976 unsigned char o_reify = anfd->reify;
711 977
712 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 978 anfd->reify = 0;
713 events |= (unsigned char)w->events;
714 979
715#if EV_SELECT_IS_WINSOCKET 980#if EV_SELECT_IS_WINSOCKET
716 if (events) 981 if (o_reify & EV__IOFDSET)
717 { 982 {
718 unsigned long arg; 983 unsigned long arg;
719 #ifdef EV_FD_TO_WIN32_HANDLE
720 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 984 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
721 #else
722 anfd->handle = _get_osfhandle (fd);
723 #endif
724 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 985 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
725 } 986 }
726#endif 987#endif
727 988
989 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
728 { 990 {
729 unsigned char o_events = anfd->events;
730 unsigned char o_reify = anfd->reify;
731
732 anfd->reify = 0;
733 anfd->events = events; 991 anfd->events = 0;
734 992
735 if (o_events != events || o_reify & EV_IOFDSET) 993 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
994 anfd->events |= (unsigned char)w->events;
995
996 if (o_events != anfd->events)
997 o_reify = EV__IOFDSET; /* actually |= */
998 }
999
1000 if (o_reify & EV__IOFDSET)
736 backend_modify (EV_A_ fd, o_events, events); 1001 backend_modify (EV_A_ fd, o_events, anfd->events);
737 }
738 } 1002 }
739 1003
740 fdchangecnt = 0; 1004 fdchangecnt = 0;
741} 1005}
742 1006
743void inline_size 1007/* something about the given fd changed */
1008inline_size void
744fd_change (EV_P_ int fd, int flags) 1009fd_change (EV_P_ int fd, int flags)
745{ 1010{
746 unsigned char reify = anfds [fd].reify; 1011 unsigned char reify = anfds [fd].reify;
747 anfds [fd].reify |= flags; 1012 anfds [fd].reify |= flags;
748 1013
… …
752 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1017 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
753 fdchanges [fdchangecnt - 1] = fd; 1018 fdchanges [fdchangecnt - 1] = fd;
754 } 1019 }
755} 1020}
756 1021
757void inline_speed 1022/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1023inline_speed void
758fd_kill (EV_P_ int fd) 1024fd_kill (EV_P_ int fd)
759{ 1025{
760 ev_io *w; 1026 ev_io *w;
761 1027
762 while ((w = (ev_io *)anfds [fd].head)) 1028 while ((w = (ev_io *)anfds [fd].head))
… …
764 ev_io_stop (EV_A_ w); 1030 ev_io_stop (EV_A_ w);
765 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1031 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
766 } 1032 }
767} 1033}
768 1034
769int inline_size 1035/* check whether the given fd is actually valid, for error recovery */
1036inline_size int
770fd_valid (int fd) 1037fd_valid (int fd)
771{ 1038{
772#ifdef _WIN32 1039#ifdef _WIN32
773 return _get_osfhandle (fd) != -1; 1040 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
774#else 1041#else
775 return fcntl (fd, F_GETFD) != -1; 1042 return fcntl (fd, F_GETFD) != -1;
776#endif 1043#endif
777} 1044}
778 1045
… …
796 1063
797 for (fd = anfdmax; fd--; ) 1064 for (fd = anfdmax; fd--; )
798 if (anfds [fd].events) 1065 if (anfds [fd].events)
799 { 1066 {
800 fd_kill (EV_A_ fd); 1067 fd_kill (EV_A_ fd);
801 return; 1068 break;
802 } 1069 }
803} 1070}
804 1071
805/* usually called after fork if backend needs to re-arm all fds from scratch */ 1072/* usually called after fork if backend needs to re-arm all fds from scratch */
806static void noinline 1073static void noinline
… …
811 for (fd = 0; fd < anfdmax; ++fd) 1078 for (fd = 0; fd < anfdmax; ++fd)
812 if (anfds [fd].events) 1079 if (anfds [fd].events)
813 { 1080 {
814 anfds [fd].events = 0; 1081 anfds [fd].events = 0;
815 anfds [fd].emask = 0; 1082 anfds [fd].emask = 0;
816 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1083 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
817 } 1084 }
818} 1085}
819 1086
1087/* used to prepare libev internal fd's */
1088/* this is not fork-safe */
1089inline_speed void
1090fd_intern (int fd)
1091{
1092#ifdef _WIN32
1093 unsigned long arg = 1;
1094 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1095#else
1096 fcntl (fd, F_SETFD, FD_CLOEXEC);
1097 fcntl (fd, F_SETFL, O_NONBLOCK);
1098#endif
1099}
1100
820/*****************************************************************************/ 1101/*****************************************************************************/
821 1102
822/* 1103/*
823 * the heap functions want a real array index. array index 0 uis guaranteed to not 1104 * the heap functions want a real array index. array index 0 is guaranteed to not
824 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1105 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
825 * the branching factor of the d-tree. 1106 * the branching factor of the d-tree.
826 */ 1107 */
827 1108
828/* 1109/*
… …
837#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1118#define HEAP0 (DHEAP - 1) /* index of first element in heap */
838#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1119#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
839#define UPHEAP_DONE(p,k) ((p) == (k)) 1120#define UPHEAP_DONE(p,k) ((p) == (k))
840 1121
841/* away from the root */ 1122/* away from the root */
842void inline_speed 1123inline_speed void
843downheap (ANHE *heap, int N, int k) 1124downheap (ANHE *heap, int N, int k)
844{ 1125{
845 ANHE he = heap [k]; 1126 ANHE he = heap [k];
846 ANHE *E = heap + N + HEAP0; 1127 ANHE *E = heap + N + HEAP0;
847 1128
… …
887#define HEAP0 1 1168#define HEAP0 1
888#define HPARENT(k) ((k) >> 1) 1169#define HPARENT(k) ((k) >> 1)
889#define UPHEAP_DONE(p,k) (!(p)) 1170#define UPHEAP_DONE(p,k) (!(p))
890 1171
891/* away from the root */ 1172/* away from the root */
892void inline_speed 1173inline_speed void
893downheap (ANHE *heap, int N, int k) 1174downheap (ANHE *heap, int N, int k)
894{ 1175{
895 ANHE he = heap [k]; 1176 ANHE he = heap [k];
896 1177
897 for (;;) 1178 for (;;)
898 { 1179 {
899 int c = k << 1; 1180 int c = k << 1;
900 1181
901 if (c > N + HEAP0 - 1) 1182 if (c >= N + HEAP0)
902 break; 1183 break;
903 1184
904 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1185 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
905 ? 1 : 0; 1186 ? 1 : 0;
906 1187
… …
917 ev_active (ANHE_w (he)) = k; 1198 ev_active (ANHE_w (he)) = k;
918} 1199}
919#endif 1200#endif
920 1201
921/* towards the root */ 1202/* towards the root */
922void inline_speed 1203inline_speed void
923upheap (ANHE *heap, int k) 1204upheap (ANHE *heap, int k)
924{ 1205{
925 ANHE he = heap [k]; 1206 ANHE he = heap [k];
926 1207
927 for (;;) 1208 for (;;)
… …
938 1219
939 heap [k] = he; 1220 heap [k] = he;
940 ev_active (ANHE_w (he)) = k; 1221 ev_active (ANHE_w (he)) = k;
941} 1222}
942 1223
943void inline_size 1224/* move an element suitably so it is in a correct place */
1225inline_size void
944adjustheap (ANHE *heap, int N, int k) 1226adjustheap (ANHE *heap, int N, int k)
945{ 1227{
946 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1228 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
947 upheap (heap, k); 1229 upheap (heap, k);
948 else 1230 else
949 downheap (heap, N, k); 1231 downheap (heap, N, k);
950} 1232}
951 1233
952/* rebuild the heap: this function is used only once and executed rarely */ 1234/* rebuild the heap: this function is used only once and executed rarely */
953void inline_size 1235inline_size void
954reheap (ANHE *heap, int N) 1236reheap (ANHE *heap, int N)
955{ 1237{
956 int i; 1238 int i;
957 1239
958 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1240 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
961 upheap (heap, i + HEAP0); 1243 upheap (heap, i + HEAP0);
962} 1244}
963 1245
964/*****************************************************************************/ 1246/*****************************************************************************/
965 1247
1248/* associate signal watchers to a signal signal */
966typedef struct 1249typedef struct
967{ 1250{
1251 EV_ATOMIC_T pending;
1252#if EV_MULTIPLICITY
1253 EV_P;
1254#endif
968 WL head; 1255 WL head;
969 EV_ATOMIC_T gotsig;
970} ANSIG; 1256} ANSIG;
971 1257
972static ANSIG *signals; 1258static ANSIG signals [EV_NSIG - 1];
973static int signalmax;
974
975static EV_ATOMIC_T gotsig;
976 1259
977/*****************************************************************************/ 1260/*****************************************************************************/
978 1261
979void inline_speed 1262#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
980fd_intern (int fd)
981{
982#ifdef _WIN32
983 unsigned long arg = 1;
984 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
985#else
986 fcntl (fd, F_SETFD, FD_CLOEXEC);
987 fcntl (fd, F_SETFL, O_NONBLOCK);
988#endif
989}
990 1263
991static void noinline 1264static void noinline
992evpipe_init (EV_P) 1265evpipe_init (EV_P)
993{ 1266{
994 if (!ev_is_active (&pipeev)) 1267 if (!ev_is_active (&pipe_w))
995 { 1268 {
996#if EV_USE_EVENTFD 1269# if EV_USE_EVENTFD
1270 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1271 if (evfd < 0 && errno == EINVAL)
997 if ((evfd = eventfd (0, 0)) >= 0) 1272 evfd = eventfd (0, 0);
1273
1274 if (evfd >= 0)
998 { 1275 {
999 evpipe [0] = -1; 1276 evpipe [0] = -1;
1000 fd_intern (evfd); 1277 fd_intern (evfd); /* doing it twice doesn't hurt */
1001 ev_io_set (&pipeev, evfd, EV_READ); 1278 ev_io_set (&pipe_w, evfd, EV_READ);
1002 } 1279 }
1003 else 1280 else
1004#endif 1281# endif
1005 { 1282 {
1006 while (pipe (evpipe)) 1283 while (pipe (evpipe))
1007 ev_syserr ("(libev) error creating signal/async pipe"); 1284 ev_syserr ("(libev) error creating signal/async pipe");
1008 1285
1009 fd_intern (evpipe [0]); 1286 fd_intern (evpipe [0]);
1010 fd_intern (evpipe [1]); 1287 fd_intern (evpipe [1]);
1011 ev_io_set (&pipeev, evpipe [0], EV_READ); 1288 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1012 } 1289 }
1013 1290
1014 ev_io_start (EV_A_ &pipeev); 1291 ev_io_start (EV_A_ &pipe_w);
1015 ev_unref (EV_A); /* watcher should not keep loop alive */ 1292 ev_unref (EV_A); /* watcher should not keep loop alive */
1016 } 1293 }
1017} 1294}
1018 1295
1019void inline_size 1296inline_size void
1020evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1297evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1021{ 1298{
1022 if (!*flag) 1299 if (!*flag)
1023 { 1300 {
1024 int old_errno = errno; /* save errno because write might clobber it */ 1301 int old_errno = errno; /* save errno because write might clobber it */
1302 char dummy;
1025 1303
1026 *flag = 1; 1304 *flag = 1;
1027 1305
1028#if EV_USE_EVENTFD 1306#if EV_USE_EVENTFD
1029 if (evfd >= 0) 1307 if (evfd >= 0)
… …
1031 uint64_t counter = 1; 1309 uint64_t counter = 1;
1032 write (evfd, &counter, sizeof (uint64_t)); 1310 write (evfd, &counter, sizeof (uint64_t));
1033 } 1311 }
1034 else 1312 else
1035#endif 1313#endif
1314 /* win32 people keep sending patches that change this write() to send() */
1315 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1316 /* so when you think this write should be a send instead, please find out */
1317 /* where your send() is from - it's definitely not the microsoft send, and */
1318 /* tell me. thank you. */
1036 write (evpipe [1], &old_errno, 1); 1319 write (evpipe [1], &dummy, 1);
1037 1320
1038 errno = old_errno; 1321 errno = old_errno;
1039 } 1322 }
1040} 1323}
1041 1324
1325/* called whenever the libev signal pipe */
1326/* got some events (signal, async) */
1042static void 1327static void
1043pipecb (EV_P_ ev_io *iow, int revents) 1328pipecb (EV_P_ ev_io *iow, int revents)
1044{ 1329{
1330 int i;
1331
1045#if EV_USE_EVENTFD 1332#if EV_USE_EVENTFD
1046 if (evfd >= 0) 1333 if (evfd >= 0)
1047 { 1334 {
1048 uint64_t counter; 1335 uint64_t counter;
1049 read (evfd, &counter, sizeof (uint64_t)); 1336 read (evfd, &counter, sizeof (uint64_t));
1050 } 1337 }
1051 else 1338 else
1052#endif 1339#endif
1053 { 1340 {
1054 char dummy; 1341 char dummy;
1342 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1055 read (evpipe [0], &dummy, 1); 1343 read (evpipe [0], &dummy, 1);
1056 } 1344 }
1057 1345
1058 if (gotsig && ev_is_default_loop (EV_A)) 1346 if (sig_pending)
1059 { 1347 {
1060 int signum; 1348 sig_pending = 0;
1061 gotsig = 0;
1062 1349
1063 for (signum = signalmax; signum--; ) 1350 for (i = EV_NSIG - 1; i--; )
1064 if (signals [signum].gotsig) 1351 if (expect_false (signals [i].pending))
1065 ev_feed_signal_event (EV_A_ signum + 1); 1352 ev_feed_signal_event (EV_A_ i + 1);
1066 } 1353 }
1067 1354
1068#if EV_ASYNC_ENABLE 1355#if EV_ASYNC_ENABLE
1069 if (gotasync) 1356 if (async_pending)
1070 { 1357 {
1071 int i; 1358 async_pending = 0;
1072 gotasync = 0;
1073 1359
1074 for (i = asynccnt; i--; ) 1360 for (i = asynccnt; i--; )
1075 if (asyncs [i]->sent) 1361 if (asyncs [i]->sent)
1076 { 1362 {
1077 asyncs [i]->sent = 0; 1363 asyncs [i]->sent = 0;
… …
1085 1371
1086static void 1372static void
1087ev_sighandler (int signum) 1373ev_sighandler (int signum)
1088{ 1374{
1089#if EV_MULTIPLICITY 1375#if EV_MULTIPLICITY
1090 struct ev_loop *loop = &default_loop_struct; 1376 EV_P = signals [signum - 1].loop;
1091#endif 1377#endif
1092 1378
1093#if _WIN32 1379#ifdef _WIN32
1094 signal (signum, ev_sighandler); 1380 signal (signum, ev_sighandler);
1095#endif 1381#endif
1096 1382
1097 signals [signum - 1].gotsig = 1; 1383 signals [signum - 1].pending = 1;
1098 evpipe_write (EV_A_ &gotsig); 1384 evpipe_write (EV_A_ &sig_pending);
1099} 1385}
1100 1386
1101void noinline 1387void noinline
1102ev_feed_signal_event (EV_P_ int signum) 1388ev_feed_signal_event (EV_P_ int signum)
1103{ 1389{
1104 WL w; 1390 WL w;
1105 1391
1392 if (expect_false (signum <= 0 || signum > EV_NSIG))
1393 return;
1394
1395 --signum;
1396
1106#if EV_MULTIPLICITY 1397#if EV_MULTIPLICITY
1107 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1398 /* it is permissible to try to feed a signal to the wrong loop */
1108#endif 1399 /* or, likely more useful, feeding a signal nobody is waiting for */
1109 1400
1110 --signum; 1401 if (expect_false (signals [signum].loop != EV_A))
1111
1112 if (signum < 0 || signum >= signalmax)
1113 return; 1402 return;
1403#endif
1114 1404
1115 signals [signum].gotsig = 0; 1405 signals [signum].pending = 0;
1116 1406
1117 for (w = signals [signum].head; w; w = w->next) 1407 for (w = signals [signum].head; w; w = w->next)
1118 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1408 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1119} 1409}
1120 1410
1411#if EV_USE_SIGNALFD
1412static void
1413sigfdcb (EV_P_ ev_io *iow, int revents)
1414{
1415 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1416
1417 for (;;)
1418 {
1419 ssize_t res = read (sigfd, si, sizeof (si));
1420
1421 /* not ISO-C, as res might be -1, but works with SuS */
1422 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1423 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1424
1425 if (res < (ssize_t)sizeof (si))
1426 break;
1427 }
1428}
1429#endif
1430
1431#endif
1432
1121/*****************************************************************************/ 1433/*****************************************************************************/
1122 1434
1435#if EV_CHILD_ENABLE
1123static WL childs [EV_PID_HASHSIZE]; 1436static WL childs [EV_PID_HASHSIZE];
1124
1125#ifndef _WIN32
1126 1437
1127static ev_signal childev; 1438static ev_signal childev;
1128 1439
1129#ifndef WIFCONTINUED 1440#ifndef WIFCONTINUED
1130# define WIFCONTINUED(status) 0 1441# define WIFCONTINUED(status) 0
1131#endif 1442#endif
1132 1443
1133void inline_speed 1444/* handle a single child status event */
1445inline_speed void
1134child_reap (EV_P_ int chain, int pid, int status) 1446child_reap (EV_P_ int chain, int pid, int status)
1135{ 1447{
1136 ev_child *w; 1448 ev_child *w;
1137 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1449 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1138 1450
1139 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1451 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1140 { 1452 {
1141 if ((w->pid == pid || !w->pid) 1453 if ((w->pid == pid || !w->pid)
1142 && (!traced || (w->flags & 1))) 1454 && (!traced || (w->flags & 1)))
1143 { 1455 {
1144 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1456 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1151 1463
1152#ifndef WCONTINUED 1464#ifndef WCONTINUED
1153# define WCONTINUED 0 1465# define WCONTINUED 0
1154#endif 1466#endif
1155 1467
1468/* called on sigchld etc., calls waitpid */
1156static void 1469static void
1157childcb (EV_P_ ev_signal *sw, int revents) 1470childcb (EV_P_ ev_signal *sw, int revents)
1158{ 1471{
1159 int pid, status; 1472 int pid, status;
1160 1473
… …
1168 /* make sure we are called again until all children have been reaped */ 1481 /* make sure we are called again until all children have been reaped */
1169 /* we need to do it this way so that the callback gets called before we continue */ 1482 /* we need to do it this way so that the callback gets called before we continue */
1170 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1483 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1171 1484
1172 child_reap (EV_A_ pid, pid, status); 1485 child_reap (EV_A_ pid, pid, status);
1173 if (EV_PID_HASHSIZE > 1) 1486 if ((EV_PID_HASHSIZE) > 1)
1174 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1487 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1175} 1488}
1176 1489
1177#endif 1490#endif
1178 1491
… …
1241 /* kqueue is borked on everything but netbsd apparently */ 1554 /* kqueue is borked on everything but netbsd apparently */
1242 /* it usually doesn't work correctly on anything but sockets and pipes */ 1555 /* it usually doesn't work correctly on anything but sockets and pipes */
1243 flags &= ~EVBACKEND_KQUEUE; 1556 flags &= ~EVBACKEND_KQUEUE;
1244#endif 1557#endif
1245#ifdef __APPLE__ 1558#ifdef __APPLE__
1246 // flags &= ~EVBACKEND_KQUEUE; for documentation 1559 /* only select works correctly on that "unix-certified" platform */
1247 flags &= ~EVBACKEND_POLL; 1560 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1561 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1562#endif
1563#ifdef __FreeBSD__
1564 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1248#endif 1565#endif
1249 1566
1250 return flags; 1567 return flags;
1251} 1568}
1252 1569
… …
1254ev_embeddable_backends (void) 1571ev_embeddable_backends (void)
1255{ 1572{
1256 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1573 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1257 1574
1258 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1575 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1259 /* please fix it and tell me how to detect the fix */ 1576 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1260 flags &= ~EVBACKEND_EPOLL; 1577 flags &= ~EVBACKEND_EPOLL;
1261 1578
1262 return flags; 1579 return flags;
1263} 1580}
1264 1581
1265unsigned int 1582unsigned int
1266ev_backend (EV_P) 1583ev_backend (EV_P)
1267{ 1584{
1268 return backend; 1585 return backend;
1269} 1586}
1270 1587
1588#if EV_FEATURE_API
1271unsigned int 1589unsigned int
1272ev_loop_count (EV_P) 1590ev_iteration (EV_P)
1273{ 1591{
1274 return loop_count; 1592 return loop_count;
1275} 1593}
1276 1594
1595unsigned int
1596ev_depth (EV_P)
1597{
1598 return loop_depth;
1599}
1600
1277void 1601void
1278ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1602ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1279{ 1603{
1280 io_blocktime = interval; 1604 io_blocktime = interval;
1281} 1605}
… …
1284ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1608ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1285{ 1609{
1286 timeout_blocktime = interval; 1610 timeout_blocktime = interval;
1287} 1611}
1288 1612
1613void
1614ev_set_userdata (EV_P_ void *data)
1615{
1616 userdata = data;
1617}
1618
1619void *
1620ev_userdata (EV_P)
1621{
1622 return userdata;
1623}
1624
1625void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1626{
1627 invoke_cb = invoke_pending_cb;
1628}
1629
1630void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1631{
1632 release_cb = release;
1633 acquire_cb = acquire;
1634}
1635#endif
1636
1637/* initialise a loop structure, must be zero-initialised */
1289static void noinline 1638static void noinline
1290loop_init (EV_P_ unsigned int flags) 1639loop_init (EV_P_ unsigned int flags)
1291{ 1640{
1292 if (!backend) 1641 if (!backend)
1293 { 1642 {
1643#if EV_USE_REALTIME
1644 if (!have_realtime)
1645 {
1646 struct timespec ts;
1647
1648 if (!clock_gettime (CLOCK_REALTIME, &ts))
1649 have_realtime = 1;
1650 }
1651#endif
1652
1294#if EV_USE_MONOTONIC 1653#if EV_USE_MONOTONIC
1654 if (!have_monotonic)
1295 { 1655 {
1296 struct timespec ts; 1656 struct timespec ts;
1657
1297 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1658 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1298 have_monotonic = 1; 1659 have_monotonic = 1;
1299 } 1660 }
1300#endif 1661#endif
1662
1663 /* pid check not overridable via env */
1664#ifndef _WIN32
1665 if (flags & EVFLAG_FORKCHECK)
1666 curpid = getpid ();
1667#endif
1668
1669 if (!(flags & EVFLAG_NOENV)
1670 && !enable_secure ()
1671 && getenv ("LIBEV_FLAGS"))
1672 flags = atoi (getenv ("LIBEV_FLAGS"));
1301 1673
1302 ev_rt_now = ev_time (); 1674 ev_rt_now = ev_time ();
1303 mn_now = get_clock (); 1675 mn_now = get_clock ();
1304 now_floor = mn_now; 1676 now_floor = mn_now;
1305 rtmn_diff = ev_rt_now - mn_now; 1677 rtmn_diff = ev_rt_now - mn_now;
1678#if EV_FEATURE_API
1679 invoke_cb = ev_invoke_pending;
1680#endif
1306 1681
1307 io_blocktime = 0.; 1682 io_blocktime = 0.;
1308 timeout_blocktime = 0.; 1683 timeout_blocktime = 0.;
1309 backend = 0; 1684 backend = 0;
1310 backend_fd = -1; 1685 backend_fd = -1;
1311 gotasync = 0; 1686 sig_pending = 0;
1687#if EV_ASYNC_ENABLE
1688 async_pending = 0;
1689#endif
1312#if EV_USE_INOTIFY 1690#if EV_USE_INOTIFY
1313 fs_fd = -2; 1691 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1314#endif 1692#endif
1315 1693#if EV_USE_SIGNALFD
1316 /* pid check not overridable via env */ 1694 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1317#ifndef _WIN32
1318 if (flags & EVFLAG_FORKCHECK)
1319 curpid = getpid ();
1320#endif 1695#endif
1321
1322 if (!(flags & EVFLAG_NOENV)
1323 && !enable_secure ()
1324 && getenv ("LIBEV_FLAGS"))
1325 flags = atoi (getenv ("LIBEV_FLAGS"));
1326 1696
1327 if (!(flags & 0x0000ffffU)) 1697 if (!(flags & 0x0000ffffU))
1328 flags |= ev_recommended_backends (); 1698 flags |= ev_recommended_backends ();
1329 1699
1330#if EV_USE_PORT 1700#if EV_USE_PORT
… …
1341#endif 1711#endif
1342#if EV_USE_SELECT 1712#if EV_USE_SELECT
1343 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1713 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1344#endif 1714#endif
1345 1715
1716 ev_prepare_init (&pending_w, pendingcb);
1717
1718#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1346 ev_init (&pipeev, pipecb); 1719 ev_init (&pipe_w, pipecb);
1347 ev_set_priority (&pipeev, EV_MAXPRI); 1720 ev_set_priority (&pipe_w, EV_MAXPRI);
1721#endif
1348 } 1722 }
1349} 1723}
1350 1724
1725/* free up a loop structure */
1351static void noinline 1726static void noinline
1352loop_destroy (EV_P) 1727loop_destroy (EV_P)
1353{ 1728{
1354 int i; 1729 int i;
1355 1730
1356 if (ev_is_active (&pipeev)) 1731 if (ev_is_active (&pipe_w))
1357 { 1732 {
1358 ev_ref (EV_A); /* signal watcher */ 1733 /*ev_ref (EV_A);*/
1359 ev_io_stop (EV_A_ &pipeev); 1734 /*ev_io_stop (EV_A_ &pipe_w);*/
1360 1735
1361#if EV_USE_EVENTFD 1736#if EV_USE_EVENTFD
1362 if (evfd >= 0) 1737 if (evfd >= 0)
1363 close (evfd); 1738 close (evfd);
1364#endif 1739#endif
1365 1740
1366 if (evpipe [0] >= 0) 1741 if (evpipe [0] >= 0)
1367 { 1742 {
1368 close (evpipe [0]); 1743 EV_WIN32_CLOSE_FD (evpipe [0]);
1369 close (evpipe [1]); 1744 EV_WIN32_CLOSE_FD (evpipe [1]);
1370 } 1745 }
1371 } 1746 }
1747
1748#if EV_USE_SIGNALFD
1749 if (ev_is_active (&sigfd_w))
1750 close (sigfd);
1751#endif
1372 1752
1373#if EV_USE_INOTIFY 1753#if EV_USE_INOTIFY
1374 if (fs_fd >= 0) 1754 if (fs_fd >= 0)
1375 close (fs_fd); 1755 close (fs_fd);
1376#endif 1756#endif
… …
1400#if EV_IDLE_ENABLE 1780#if EV_IDLE_ENABLE
1401 array_free (idle, [i]); 1781 array_free (idle, [i]);
1402#endif 1782#endif
1403 } 1783 }
1404 1784
1405 ev_free (anfds); anfdmax = 0; 1785 ev_free (anfds); anfds = 0; anfdmax = 0;
1406 1786
1407 /* have to use the microsoft-never-gets-it-right macro */ 1787 /* have to use the microsoft-never-gets-it-right macro */
1788 array_free (rfeed, EMPTY);
1408 array_free (fdchange, EMPTY); 1789 array_free (fdchange, EMPTY);
1409 array_free (timer, EMPTY); 1790 array_free (timer, EMPTY);
1410#if EV_PERIODIC_ENABLE 1791#if EV_PERIODIC_ENABLE
1411 array_free (periodic, EMPTY); 1792 array_free (periodic, EMPTY);
1412#endif 1793#endif
… …
1421 1802
1422 backend = 0; 1803 backend = 0;
1423} 1804}
1424 1805
1425#if EV_USE_INOTIFY 1806#if EV_USE_INOTIFY
1426void inline_size infy_fork (EV_P); 1807inline_size void infy_fork (EV_P);
1427#endif 1808#endif
1428 1809
1429void inline_size 1810inline_size void
1430loop_fork (EV_P) 1811loop_fork (EV_P)
1431{ 1812{
1432#if EV_USE_PORT 1813#if EV_USE_PORT
1433 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1814 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1434#endif 1815#endif
… …
1440#endif 1821#endif
1441#if EV_USE_INOTIFY 1822#if EV_USE_INOTIFY
1442 infy_fork (EV_A); 1823 infy_fork (EV_A);
1443#endif 1824#endif
1444 1825
1445 if (ev_is_active (&pipeev)) 1826 if (ev_is_active (&pipe_w))
1446 { 1827 {
1447 /* this "locks" the handlers against writing to the pipe */ 1828 /* this "locks" the handlers against writing to the pipe */
1448 /* while we modify the fd vars */ 1829 /* while we modify the fd vars */
1449 gotsig = 1; 1830 sig_pending = 1;
1450#if EV_ASYNC_ENABLE 1831#if EV_ASYNC_ENABLE
1451 gotasync = 1; 1832 async_pending = 1;
1452#endif 1833#endif
1453 1834
1454 ev_ref (EV_A); 1835 ev_ref (EV_A);
1455 ev_io_stop (EV_A_ &pipeev); 1836 ev_io_stop (EV_A_ &pipe_w);
1456 1837
1457#if EV_USE_EVENTFD 1838#if EV_USE_EVENTFD
1458 if (evfd >= 0) 1839 if (evfd >= 0)
1459 close (evfd); 1840 close (evfd);
1460#endif 1841#endif
1461 1842
1462 if (evpipe [0] >= 0) 1843 if (evpipe [0] >= 0)
1463 { 1844 {
1464 close (evpipe [0]); 1845 EV_WIN32_CLOSE_FD (evpipe [0]);
1465 close (evpipe [1]); 1846 EV_WIN32_CLOSE_FD (evpipe [1]);
1466 } 1847 }
1467 1848
1849#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1468 evpipe_init (EV_A); 1850 evpipe_init (EV_A);
1469 /* now iterate over everything, in case we missed something */ 1851 /* now iterate over everything, in case we missed something */
1470 pipecb (EV_A_ &pipeev, EV_READ); 1852 pipecb (EV_A_ &pipe_w, EV_READ);
1853#endif
1471 } 1854 }
1472 1855
1473 postfork = 0; 1856 postfork = 0;
1474} 1857}
1475 1858
1476#if EV_MULTIPLICITY 1859#if EV_MULTIPLICITY
1477 1860
1478struct ev_loop * 1861struct ev_loop *
1479ev_loop_new (unsigned int flags) 1862ev_loop_new (unsigned int flags)
1480{ 1863{
1481 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1864 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1482 1865
1483 memset (loop, 0, sizeof (struct ev_loop)); 1866 memset (EV_A, 0, sizeof (struct ev_loop));
1484
1485 loop_init (EV_A_ flags); 1867 loop_init (EV_A_ flags);
1486 1868
1487 if (ev_backend (EV_A)) 1869 if (ev_backend (EV_A))
1488 return loop; 1870 return EV_A;
1489 1871
1490 return 0; 1872 return 0;
1491} 1873}
1492 1874
1493void 1875void
… …
1500void 1882void
1501ev_loop_fork (EV_P) 1883ev_loop_fork (EV_P)
1502{ 1884{
1503 postfork = 1; /* must be in line with ev_default_fork */ 1885 postfork = 1; /* must be in line with ev_default_fork */
1504} 1886}
1887#endif /* multiplicity */
1505 1888
1506#if EV_VERIFY 1889#if EV_VERIFY
1507static void noinline 1890static void noinline
1508verify_watcher (EV_P_ W w) 1891verify_watcher (EV_P_ W w)
1509{ 1892{
1510 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1893 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1511 1894
1512 if (w->pending) 1895 if (w->pending)
1513 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1896 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1514} 1897}
1515 1898
1516static void noinline 1899static void noinline
1517verify_heap (EV_P_ ANHE *heap, int N) 1900verify_heap (EV_P_ ANHE *heap, int N)
1518{ 1901{
1519 int i; 1902 int i;
1520 1903
1521 for (i = HEAP0; i < N + HEAP0; ++i) 1904 for (i = HEAP0; i < N + HEAP0; ++i)
1522 { 1905 {
1523 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1906 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1524 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1907 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1525 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1908 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1526 1909
1527 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1910 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1528 } 1911 }
1529} 1912}
1530 1913
1531static void noinline 1914static void noinline
1532array_verify (EV_P_ W *ws, int cnt) 1915array_verify (EV_P_ W *ws, int cnt)
1533{ 1916{
1534 while (cnt--) 1917 while (cnt--)
1535 { 1918 {
1536 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1919 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1537 verify_watcher (EV_A_ ws [cnt]); 1920 verify_watcher (EV_A_ ws [cnt]);
1538 } 1921 }
1539} 1922}
1540#endif 1923#endif
1541 1924
1925#if EV_FEATURE_API
1542void 1926void
1543ev_loop_verify (EV_P) 1927ev_verify (EV_P)
1544{ 1928{
1545#if EV_VERIFY 1929#if EV_VERIFY
1546 int i; 1930 int i;
1547 WL w; 1931 WL w;
1548 1932
1549 assert (activecnt >= -1); 1933 assert (activecnt >= -1);
1550 1934
1551 assert (fdchangemax >= fdchangecnt); 1935 assert (fdchangemax >= fdchangecnt);
1552 for (i = 0; i < fdchangecnt; ++i) 1936 for (i = 0; i < fdchangecnt; ++i)
1553 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1937 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1554 1938
1555 assert (anfdmax >= 0); 1939 assert (anfdmax >= 0);
1556 for (i = 0; i < anfdmax; ++i) 1940 for (i = 0; i < anfdmax; ++i)
1557 for (w = anfds [i].head; w; w = w->next) 1941 for (w = anfds [i].head; w; w = w->next)
1558 { 1942 {
1559 verify_watcher (EV_A_ (W)w); 1943 verify_watcher (EV_A_ (W)w);
1560 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1944 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1561 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1945 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1562 } 1946 }
1563 1947
1564 assert (timermax >= timercnt); 1948 assert (timermax >= timercnt);
1565 verify_heap (EV_A_ timers, timercnt); 1949 verify_heap (EV_A_ timers, timercnt);
1566 1950
… …
1587#if EV_ASYNC_ENABLE 1971#if EV_ASYNC_ENABLE
1588 assert (asyncmax >= asynccnt); 1972 assert (asyncmax >= asynccnt);
1589 array_verify (EV_A_ (W *)asyncs, asynccnt); 1973 array_verify (EV_A_ (W *)asyncs, asynccnt);
1590#endif 1974#endif
1591 1975
1976#if EV_PREPARE_ENABLE
1592 assert (preparemax >= preparecnt); 1977 assert (preparemax >= preparecnt);
1593 array_verify (EV_A_ (W *)prepares, preparecnt); 1978 array_verify (EV_A_ (W *)prepares, preparecnt);
1979#endif
1594 1980
1981#if EV_CHECK_ENABLE
1595 assert (checkmax >= checkcnt); 1982 assert (checkmax >= checkcnt);
1596 array_verify (EV_A_ (W *)checks, checkcnt); 1983 array_verify (EV_A_ (W *)checks, checkcnt);
1984#endif
1597 1985
1598# if 0 1986# if 0
1987#if EV_CHILD_ENABLE
1599 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1988 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1600 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1989 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1990#endif
1601# endif 1991# endif
1602#endif 1992#endif
1603} 1993}
1604 1994#endif
1605#endif /* multiplicity */
1606 1995
1607#if EV_MULTIPLICITY 1996#if EV_MULTIPLICITY
1608struct ev_loop * 1997struct ev_loop *
1609ev_default_loop_init (unsigned int flags) 1998ev_default_loop_init (unsigned int flags)
1610#else 1999#else
… …
1613#endif 2002#endif
1614{ 2003{
1615 if (!ev_default_loop_ptr) 2004 if (!ev_default_loop_ptr)
1616 { 2005 {
1617#if EV_MULTIPLICITY 2006#if EV_MULTIPLICITY
1618 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2007 EV_P = ev_default_loop_ptr = &default_loop_struct;
1619#else 2008#else
1620 ev_default_loop_ptr = 1; 2009 ev_default_loop_ptr = 1;
1621#endif 2010#endif
1622 2011
1623 loop_init (EV_A_ flags); 2012 loop_init (EV_A_ flags);
1624 2013
1625 if (ev_backend (EV_A)) 2014 if (ev_backend (EV_A))
1626 { 2015 {
1627#ifndef _WIN32 2016#if EV_CHILD_ENABLE
1628 ev_signal_init (&childev, childcb, SIGCHLD); 2017 ev_signal_init (&childev, childcb, SIGCHLD);
1629 ev_set_priority (&childev, EV_MAXPRI); 2018 ev_set_priority (&childev, EV_MAXPRI);
1630 ev_signal_start (EV_A_ &childev); 2019 ev_signal_start (EV_A_ &childev);
1631 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2020 ev_unref (EV_A); /* child watcher should not keep loop alive */
1632#endif 2021#endif
… …
1640 2029
1641void 2030void
1642ev_default_destroy (void) 2031ev_default_destroy (void)
1643{ 2032{
1644#if EV_MULTIPLICITY 2033#if EV_MULTIPLICITY
1645 struct ev_loop *loop = ev_default_loop_ptr; 2034 EV_P = ev_default_loop_ptr;
1646#endif 2035#endif
1647 2036
1648 ev_default_loop_ptr = 0; 2037 ev_default_loop_ptr = 0;
1649 2038
1650#ifndef _WIN32 2039#if EV_CHILD_ENABLE
1651 ev_ref (EV_A); /* child watcher */ 2040 ev_ref (EV_A); /* child watcher */
1652 ev_signal_stop (EV_A_ &childev); 2041 ev_signal_stop (EV_A_ &childev);
1653#endif 2042#endif
1654 2043
1655 loop_destroy (EV_A); 2044 loop_destroy (EV_A);
… …
1657 2046
1658void 2047void
1659ev_default_fork (void) 2048ev_default_fork (void)
1660{ 2049{
1661#if EV_MULTIPLICITY 2050#if EV_MULTIPLICITY
1662 struct ev_loop *loop = ev_default_loop_ptr; 2051 EV_P = ev_default_loop_ptr;
1663#endif 2052#endif
1664 2053
1665 postfork = 1; /* must be in line with ev_loop_fork */ 2054 postfork = 1; /* must be in line with ev_loop_fork */
1666} 2055}
1667 2056
… …
1671ev_invoke (EV_P_ void *w, int revents) 2060ev_invoke (EV_P_ void *w, int revents)
1672{ 2061{
1673 EV_CB_INVOKE ((W)w, revents); 2062 EV_CB_INVOKE ((W)w, revents);
1674} 2063}
1675 2064
1676void inline_speed 2065unsigned int
1677call_pending (EV_P) 2066ev_pending_count (EV_P)
2067{
2068 int pri;
2069 unsigned int count = 0;
2070
2071 for (pri = NUMPRI; pri--; )
2072 count += pendingcnt [pri];
2073
2074 return count;
2075}
2076
2077void noinline
2078ev_invoke_pending (EV_P)
1678{ 2079{
1679 int pri; 2080 int pri;
1680 2081
1681 for (pri = NUMPRI; pri--; ) 2082 for (pri = NUMPRI; pri--; )
1682 while (pendingcnt [pri]) 2083 while (pendingcnt [pri])
1683 { 2084 {
1684 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2085 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1685 2086
1686 if (expect_true (p->w))
1687 {
1688 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2087 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2088 /* ^ this is no longer true, as pending_w could be here */
1689 2089
1690 p->w->pending = 0; 2090 p->w->pending = 0;
1691 EV_CB_INVOKE (p->w, p->events); 2091 EV_CB_INVOKE (p->w, p->events);
1692 EV_FREQUENT_CHECK; 2092 EV_FREQUENT_CHECK;
1693 }
1694 } 2093 }
1695} 2094}
1696 2095
1697#if EV_IDLE_ENABLE 2096#if EV_IDLE_ENABLE
1698void inline_size 2097/* make idle watchers pending. this handles the "call-idle */
2098/* only when higher priorities are idle" logic */
2099inline_size void
1699idle_reify (EV_P) 2100idle_reify (EV_P)
1700{ 2101{
1701 if (expect_false (idleall)) 2102 if (expect_false (idleall))
1702 { 2103 {
1703 int pri; 2104 int pri;
… …
1715 } 2116 }
1716 } 2117 }
1717} 2118}
1718#endif 2119#endif
1719 2120
1720void inline_size 2121/* make timers pending */
2122inline_size void
1721timers_reify (EV_P) 2123timers_reify (EV_P)
1722{ 2124{
1723 EV_FREQUENT_CHECK; 2125 EV_FREQUENT_CHECK;
1724 2126
1725 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2127 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1726 { 2128 {
1727 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2129 do
1728
1729 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1730
1731 /* first reschedule or stop timer */
1732 if (w->repeat)
1733 { 2130 {
2131 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2132
2133 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2134
2135 /* first reschedule or stop timer */
2136 if (w->repeat)
2137 {
1734 ev_at (w) += w->repeat; 2138 ev_at (w) += w->repeat;
1735 if (ev_at (w) < mn_now) 2139 if (ev_at (w) < mn_now)
1736 ev_at (w) = mn_now; 2140 ev_at (w) = mn_now;
1737 2141
1738 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2142 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1739 2143
1740 ANHE_at_cache (timers [HEAP0]); 2144 ANHE_at_cache (timers [HEAP0]);
1741 downheap (timers, timercnt, HEAP0); 2145 downheap (timers, timercnt, HEAP0);
2146 }
2147 else
2148 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2149
2150 EV_FREQUENT_CHECK;
2151 feed_reverse (EV_A_ (W)w);
1742 } 2152 }
1743 else 2153 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1744 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1745 2154
1746 EV_FREQUENT_CHECK; 2155 feed_reverse_done (EV_A_ EV_TIMER);
1747 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1748 } 2156 }
1749} 2157}
1750 2158
1751#if EV_PERIODIC_ENABLE 2159#if EV_PERIODIC_ENABLE
1752void inline_size 2160/* make periodics pending */
2161inline_size void
1753periodics_reify (EV_P) 2162periodics_reify (EV_P)
1754{ 2163{
1755 EV_FREQUENT_CHECK; 2164 EV_FREQUENT_CHECK;
1756 2165
1757 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2166 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1758 { 2167 {
1759 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2168 int feed_count = 0;
1760 2169
1761 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2170 do
1762
1763 /* first reschedule or stop timer */
1764 if (w->reschedule_cb)
1765 { 2171 {
2172 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2173
2174 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2175
2176 /* first reschedule or stop timer */
2177 if (w->reschedule_cb)
2178 {
1766 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2179 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1767 2180
1768 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2181 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1769 2182
1770 ANHE_at_cache (periodics [HEAP0]); 2183 ANHE_at_cache (periodics [HEAP0]);
1771 downheap (periodics, periodiccnt, HEAP0); 2184 downheap (periodics, periodiccnt, HEAP0);
2185 }
2186 else if (w->interval)
2187 {
2188 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2189 /* if next trigger time is not sufficiently in the future, put it there */
2190 /* this might happen because of floating point inexactness */
2191 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2192 {
2193 ev_at (w) += w->interval;
2194
2195 /* if interval is unreasonably low we might still have a time in the past */
2196 /* so correct this. this will make the periodic very inexact, but the user */
2197 /* has effectively asked to get triggered more often than possible */
2198 if (ev_at (w) < ev_rt_now)
2199 ev_at (w) = ev_rt_now;
2200 }
2201
2202 ANHE_at_cache (periodics [HEAP0]);
2203 downheap (periodics, periodiccnt, HEAP0);
2204 }
2205 else
2206 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2207
2208 EV_FREQUENT_CHECK;
2209 feed_reverse (EV_A_ (W)w);
1772 } 2210 }
1773 else if (w->interval) 2211 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1774 {
1775 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1776 /* if next trigger time is not sufficiently in the future, put it there */
1777 /* this might happen because of floating point inexactness */
1778 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1779 {
1780 ev_at (w) += w->interval;
1781 2212
1782 /* if interval is unreasonably low we might still have a time in the past */
1783 /* so correct this. this will make the periodic very inexact, but the user */
1784 /* has effectively asked to get triggered more often than possible */
1785 if (ev_at (w) < ev_rt_now)
1786 ev_at (w) = ev_rt_now;
1787 }
1788
1789 ANHE_at_cache (periodics [HEAP0]);
1790 downheap (periodics, periodiccnt, HEAP0);
1791 }
1792 else
1793 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1794
1795 EV_FREQUENT_CHECK;
1796 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2213 feed_reverse_done (EV_A_ EV_PERIODIC);
1797 } 2214 }
1798} 2215}
1799 2216
2217/* simply recalculate all periodics */
2218/* TODO: maybe ensure that at least one event happens when jumping forward? */
1800static void noinline 2219static void noinline
1801periodics_reschedule (EV_P) 2220periodics_reschedule (EV_P)
1802{ 2221{
1803 int i; 2222 int i;
1804 2223
… …
1817 2236
1818 reheap (periodics, periodiccnt); 2237 reheap (periodics, periodiccnt);
1819} 2238}
1820#endif 2239#endif
1821 2240
1822void inline_speed 2241/* adjust all timers by a given offset */
2242static void noinline
2243timers_reschedule (EV_P_ ev_tstamp adjust)
2244{
2245 int i;
2246
2247 for (i = 0; i < timercnt; ++i)
2248 {
2249 ANHE *he = timers + i + HEAP0;
2250 ANHE_w (*he)->at += adjust;
2251 ANHE_at_cache (*he);
2252 }
2253}
2254
2255/* fetch new monotonic and realtime times from the kernel */
2256/* also detect if there was a timejump, and act accordingly */
2257inline_speed void
1823time_update (EV_P_ ev_tstamp max_block) 2258time_update (EV_P_ ev_tstamp max_block)
1824{ 2259{
1825 int i;
1826
1827#if EV_USE_MONOTONIC 2260#if EV_USE_MONOTONIC
1828 if (expect_true (have_monotonic)) 2261 if (expect_true (have_monotonic))
1829 { 2262 {
2263 int i;
1830 ev_tstamp odiff = rtmn_diff; 2264 ev_tstamp odiff = rtmn_diff;
1831 2265
1832 mn_now = get_clock (); 2266 mn_now = get_clock ();
1833 2267
1834 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2268 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1860 ev_rt_now = ev_time (); 2294 ev_rt_now = ev_time ();
1861 mn_now = get_clock (); 2295 mn_now = get_clock ();
1862 now_floor = mn_now; 2296 now_floor = mn_now;
1863 } 2297 }
1864 2298
2299 /* no timer adjustment, as the monotonic clock doesn't jump */
2300 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865# if EV_PERIODIC_ENABLE 2301# if EV_PERIODIC_ENABLE
1866 periodics_reschedule (EV_A); 2302 periodics_reschedule (EV_A);
1867# endif 2303# endif
1868 /* no timer adjustment, as the monotonic clock doesn't jump */
1869 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870 } 2304 }
1871 else 2305 else
1872#endif 2306#endif
1873 { 2307 {
1874 ev_rt_now = ev_time (); 2308 ev_rt_now = ev_time ();
1875 2309
1876 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2310 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1877 { 2311 {
2312 /* adjust timers. this is easy, as the offset is the same for all of them */
2313 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1878#if EV_PERIODIC_ENABLE 2314#if EV_PERIODIC_ENABLE
1879 periodics_reschedule (EV_A); 2315 periodics_reschedule (EV_A);
1880#endif 2316#endif
1881 /* adjust timers. this is easy, as the offset is the same for all of them */
1882 for (i = 0; i < timercnt; ++i)
1883 {
1884 ANHE *he = timers + i + HEAP0;
1885 ANHE_w (*he)->at += ev_rt_now - mn_now;
1886 ANHE_at_cache (*he);
1887 }
1888 } 2317 }
1889 2318
1890 mn_now = ev_rt_now; 2319 mn_now = ev_rt_now;
1891 } 2320 }
1892} 2321}
1893 2322
1894void 2323void
1895ev_ref (EV_P)
1896{
1897 ++activecnt;
1898}
1899
1900void
1901ev_unref (EV_P)
1902{
1903 --activecnt;
1904}
1905
1906void
1907ev_now_update (EV_P)
1908{
1909 time_update (EV_A_ 1e100);
1910}
1911
1912static int loop_done;
1913
1914void
1915ev_loop (EV_P_ int flags) 2324ev_run (EV_P_ int flags)
1916{ 2325{
2326#if EV_FEATURE_API
2327 ++loop_depth;
2328#endif
2329
2330 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2331
1917 loop_done = EVUNLOOP_CANCEL; 2332 loop_done = EVBREAK_CANCEL;
1918 2333
1919 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2334 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1920 2335
1921 do 2336 do
1922 { 2337 {
1923#if EV_VERIFY >= 2 2338#if EV_VERIFY >= 2
1924 ev_loop_verify (EV_A); 2339 ev_verify (EV_A);
1925#endif 2340#endif
1926 2341
1927#ifndef _WIN32 2342#ifndef _WIN32
1928 if (expect_false (curpid)) /* penalise the forking check even more */ 2343 if (expect_false (curpid)) /* penalise the forking check even more */
1929 if (expect_false (getpid () != curpid)) 2344 if (expect_false (getpid () != curpid))
… …
1937 /* we might have forked, so queue fork handlers */ 2352 /* we might have forked, so queue fork handlers */
1938 if (expect_false (postfork)) 2353 if (expect_false (postfork))
1939 if (forkcnt) 2354 if (forkcnt)
1940 { 2355 {
1941 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2356 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1942 call_pending (EV_A); 2357 EV_INVOKE_PENDING;
1943 } 2358 }
1944#endif 2359#endif
1945 2360
2361#if EV_PREPARE_ENABLE
1946 /* queue prepare watchers (and execute them) */ 2362 /* queue prepare watchers (and execute them) */
1947 if (expect_false (preparecnt)) 2363 if (expect_false (preparecnt))
1948 { 2364 {
1949 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2365 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1950 call_pending (EV_A); 2366 EV_INVOKE_PENDING;
1951 } 2367 }
2368#endif
1952 2369
1953 if (expect_false (!activecnt)) 2370 if (expect_false (loop_done))
1954 break; 2371 break;
1955 2372
1956 /* we might have forked, so reify kernel state if necessary */ 2373 /* we might have forked, so reify kernel state if necessary */
1957 if (expect_false (postfork)) 2374 if (expect_false (postfork))
1958 loop_fork (EV_A); 2375 loop_fork (EV_A);
… …
1963 /* calculate blocking time */ 2380 /* calculate blocking time */
1964 { 2381 {
1965 ev_tstamp waittime = 0.; 2382 ev_tstamp waittime = 0.;
1966 ev_tstamp sleeptime = 0.; 2383 ev_tstamp sleeptime = 0.;
1967 2384
2385 /* remember old timestamp for io_blocktime calculation */
2386 ev_tstamp prev_mn_now = mn_now;
2387
2388 /* update time to cancel out callback processing overhead */
2389 time_update (EV_A_ 1e100);
2390
1968 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2391 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1969 { 2392 {
1970 /* update time to cancel out callback processing overhead */
1971 time_update (EV_A_ 1e100);
1972
1973 waittime = MAX_BLOCKTIME; 2393 waittime = MAX_BLOCKTIME;
1974 2394
1975 if (timercnt) 2395 if (timercnt)
1976 { 2396 {
1977 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2397 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1984 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2404 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1985 if (waittime > to) waittime = to; 2405 if (waittime > to) waittime = to;
1986 } 2406 }
1987#endif 2407#endif
1988 2408
2409 /* don't let timeouts decrease the waittime below timeout_blocktime */
1989 if (expect_false (waittime < timeout_blocktime)) 2410 if (expect_false (waittime < timeout_blocktime))
1990 waittime = timeout_blocktime; 2411 waittime = timeout_blocktime;
1991 2412
1992 sleeptime = waittime - backend_fudge; 2413 /* extra check because io_blocktime is commonly 0 */
1993
1994 if (expect_true (sleeptime > io_blocktime)) 2414 if (expect_false (io_blocktime))
1995 sleeptime = io_blocktime;
1996
1997 if (sleeptime)
1998 { 2415 {
2416 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2417
2418 if (sleeptime > waittime - backend_fudge)
2419 sleeptime = waittime - backend_fudge;
2420
2421 if (expect_true (sleeptime > 0.))
2422 {
1999 ev_sleep (sleeptime); 2423 ev_sleep (sleeptime);
2000 waittime -= sleeptime; 2424 waittime -= sleeptime;
2425 }
2001 } 2426 }
2002 } 2427 }
2003 2428
2429#if EV_FEATURE_API
2004 ++loop_count; 2430 ++loop_count;
2431#endif
2432 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2005 backend_poll (EV_A_ waittime); 2433 backend_poll (EV_A_ waittime);
2434 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2006 2435
2007 /* update ev_rt_now, do magic */ 2436 /* update ev_rt_now, do magic */
2008 time_update (EV_A_ waittime + sleeptime); 2437 time_update (EV_A_ waittime + sleeptime);
2009 } 2438 }
2010 2439
… …
2017#if EV_IDLE_ENABLE 2446#if EV_IDLE_ENABLE
2018 /* queue idle watchers unless other events are pending */ 2447 /* queue idle watchers unless other events are pending */
2019 idle_reify (EV_A); 2448 idle_reify (EV_A);
2020#endif 2449#endif
2021 2450
2451#if EV_CHECK_ENABLE
2022 /* queue check watchers, to be executed first */ 2452 /* queue check watchers, to be executed first */
2023 if (expect_false (checkcnt)) 2453 if (expect_false (checkcnt))
2024 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2454 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2455#endif
2025 2456
2026 call_pending (EV_A); 2457 EV_INVOKE_PENDING;
2027 } 2458 }
2028 while (expect_true ( 2459 while (expect_true (
2029 activecnt 2460 activecnt
2030 && !loop_done 2461 && !loop_done
2031 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2462 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2032 )); 2463 ));
2033 2464
2034 if (loop_done == EVUNLOOP_ONE) 2465 if (loop_done == EVBREAK_ONE)
2035 loop_done = EVUNLOOP_CANCEL; 2466 loop_done = EVBREAK_CANCEL;
2036}
2037 2467
2468#if EV_FEATURE_API
2469 --loop_depth;
2470#endif
2471}
2472
2038void 2473void
2039ev_unloop (EV_P_ int how) 2474ev_break (EV_P_ int how)
2040{ 2475{
2041 loop_done = how; 2476 loop_done = how;
2042} 2477}
2043 2478
2479void
2480ev_ref (EV_P)
2481{
2482 ++activecnt;
2483}
2484
2485void
2486ev_unref (EV_P)
2487{
2488 --activecnt;
2489}
2490
2491void
2492ev_now_update (EV_P)
2493{
2494 time_update (EV_A_ 1e100);
2495}
2496
2497void
2498ev_suspend (EV_P)
2499{
2500 ev_now_update (EV_A);
2501}
2502
2503void
2504ev_resume (EV_P)
2505{
2506 ev_tstamp mn_prev = mn_now;
2507
2508 ev_now_update (EV_A);
2509 timers_reschedule (EV_A_ mn_now - mn_prev);
2510#if EV_PERIODIC_ENABLE
2511 /* TODO: really do this? */
2512 periodics_reschedule (EV_A);
2513#endif
2514}
2515
2044/*****************************************************************************/ 2516/*****************************************************************************/
2517/* singly-linked list management, used when the expected list length is short */
2045 2518
2046void inline_size 2519inline_size void
2047wlist_add (WL *head, WL elem) 2520wlist_add (WL *head, WL elem)
2048{ 2521{
2049 elem->next = *head; 2522 elem->next = *head;
2050 *head = elem; 2523 *head = elem;
2051} 2524}
2052 2525
2053void inline_size 2526inline_size void
2054wlist_del (WL *head, WL elem) 2527wlist_del (WL *head, WL elem)
2055{ 2528{
2056 while (*head) 2529 while (*head)
2057 { 2530 {
2058 if (*head == elem) 2531 if (expect_true (*head == elem))
2059 { 2532 {
2060 *head = elem->next; 2533 *head = elem->next;
2061 return; 2534 break;
2062 } 2535 }
2063 2536
2064 head = &(*head)->next; 2537 head = &(*head)->next;
2065 } 2538 }
2066} 2539}
2067 2540
2068void inline_speed 2541/* internal, faster, version of ev_clear_pending */
2542inline_speed void
2069clear_pending (EV_P_ W w) 2543clear_pending (EV_P_ W w)
2070{ 2544{
2071 if (w->pending) 2545 if (w->pending)
2072 { 2546 {
2073 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2547 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2074 w->pending = 0; 2548 w->pending = 0;
2075 } 2549 }
2076} 2550}
2077 2551
2078int 2552int
… …
2082 int pending = w_->pending; 2556 int pending = w_->pending;
2083 2557
2084 if (expect_true (pending)) 2558 if (expect_true (pending))
2085 { 2559 {
2086 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2560 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2561 p->w = (W)&pending_w;
2087 w_->pending = 0; 2562 w_->pending = 0;
2088 p->w = 0;
2089 return p->events; 2563 return p->events;
2090 } 2564 }
2091 else 2565 else
2092 return 0; 2566 return 0;
2093} 2567}
2094 2568
2095void inline_size 2569inline_size void
2096pri_adjust (EV_P_ W w) 2570pri_adjust (EV_P_ W w)
2097{ 2571{
2098 int pri = w->priority; 2572 int pri = ev_priority (w);
2099 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2573 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2100 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2574 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2101 w->priority = pri; 2575 ev_set_priority (w, pri);
2102} 2576}
2103 2577
2104void inline_speed 2578inline_speed void
2105ev_start (EV_P_ W w, int active) 2579ev_start (EV_P_ W w, int active)
2106{ 2580{
2107 pri_adjust (EV_A_ w); 2581 pri_adjust (EV_A_ w);
2108 w->active = active; 2582 w->active = active;
2109 ev_ref (EV_A); 2583 ev_ref (EV_A);
2110} 2584}
2111 2585
2112void inline_size 2586inline_size void
2113ev_stop (EV_P_ W w) 2587ev_stop (EV_P_ W w)
2114{ 2588{
2115 ev_unref (EV_A); 2589 ev_unref (EV_A);
2116 w->active = 0; 2590 w->active = 0;
2117} 2591}
… …
2124 int fd = w->fd; 2598 int fd = w->fd;
2125 2599
2126 if (expect_false (ev_is_active (w))) 2600 if (expect_false (ev_is_active (w)))
2127 return; 2601 return;
2128 2602
2129 assert (("ev_io_start called with negative fd", fd >= 0)); 2603 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2130 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2604 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2131 2605
2132 EV_FREQUENT_CHECK; 2606 EV_FREQUENT_CHECK;
2133 2607
2134 ev_start (EV_A_ (W)w, 1); 2608 ev_start (EV_A_ (W)w, 1);
2135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2609 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2136 wlist_add (&anfds[fd].head, (WL)w); 2610 wlist_add (&anfds[fd].head, (WL)w);
2137 2611
2138 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2612 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2139 w->events &= ~EV_IOFDSET; 2613 w->events &= ~EV__IOFDSET;
2140 2614
2141 EV_FREQUENT_CHECK; 2615 EV_FREQUENT_CHECK;
2142} 2616}
2143 2617
2144void noinline 2618void noinline
… …
2146{ 2620{
2147 clear_pending (EV_A_ (W)w); 2621 clear_pending (EV_A_ (W)w);
2148 if (expect_false (!ev_is_active (w))) 2622 if (expect_false (!ev_is_active (w)))
2149 return; 2623 return;
2150 2624
2151 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2625 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2152 2626
2153 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
2154 2628
2155 wlist_del (&anfds[w->fd].head, (WL)w); 2629 wlist_del (&anfds[w->fd].head, (WL)w);
2156 ev_stop (EV_A_ (W)w); 2630 ev_stop (EV_A_ (W)w);
2157 2631
2158 fd_change (EV_A_ w->fd, 1); 2632 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2159 2633
2160 EV_FREQUENT_CHECK; 2634 EV_FREQUENT_CHECK;
2161} 2635}
2162 2636
2163void noinline 2637void noinline
… …
2166 if (expect_false (ev_is_active (w))) 2640 if (expect_false (ev_is_active (w)))
2167 return; 2641 return;
2168 2642
2169 ev_at (w) += mn_now; 2643 ev_at (w) += mn_now;
2170 2644
2171 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2645 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2172 2646
2173 EV_FREQUENT_CHECK; 2647 EV_FREQUENT_CHECK;
2174 2648
2175 ++timercnt; 2649 ++timercnt;
2176 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2650 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2179 ANHE_at_cache (timers [ev_active (w)]); 2653 ANHE_at_cache (timers [ev_active (w)]);
2180 upheap (timers, ev_active (w)); 2654 upheap (timers, ev_active (w));
2181 2655
2182 EV_FREQUENT_CHECK; 2656 EV_FREQUENT_CHECK;
2183 2657
2184 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2658 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2185} 2659}
2186 2660
2187void noinline 2661void noinline
2188ev_timer_stop (EV_P_ ev_timer *w) 2662ev_timer_stop (EV_P_ ev_timer *w)
2189{ 2663{
… …
2194 EV_FREQUENT_CHECK; 2668 EV_FREQUENT_CHECK;
2195 2669
2196 { 2670 {
2197 int active = ev_active (w); 2671 int active = ev_active (w);
2198 2672
2199 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2673 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2200 2674
2201 --timercnt; 2675 --timercnt;
2202 2676
2203 if (expect_true (active < timercnt + HEAP0)) 2677 if (expect_true (active < timercnt + HEAP0))
2204 { 2678 {
2205 timers [active] = timers [timercnt + HEAP0]; 2679 timers [active] = timers [timercnt + HEAP0];
2206 adjustheap (timers, timercnt, active); 2680 adjustheap (timers, timercnt, active);
2207 } 2681 }
2208 } 2682 }
2209 2683
2210 EV_FREQUENT_CHECK;
2211
2212 ev_at (w) -= mn_now; 2684 ev_at (w) -= mn_now;
2213 2685
2214 ev_stop (EV_A_ (W)w); 2686 ev_stop (EV_A_ (W)w);
2687
2688 EV_FREQUENT_CHECK;
2215} 2689}
2216 2690
2217void noinline 2691void noinline
2218ev_timer_again (EV_P_ ev_timer *w) 2692ev_timer_again (EV_P_ ev_timer *w)
2219{ 2693{
… …
2237 } 2711 }
2238 2712
2239 EV_FREQUENT_CHECK; 2713 EV_FREQUENT_CHECK;
2240} 2714}
2241 2715
2716ev_tstamp
2717ev_timer_remaining (EV_P_ ev_timer *w)
2718{
2719 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2720}
2721
2242#if EV_PERIODIC_ENABLE 2722#if EV_PERIODIC_ENABLE
2243void noinline 2723void noinline
2244ev_periodic_start (EV_P_ ev_periodic *w) 2724ev_periodic_start (EV_P_ ev_periodic *w)
2245{ 2725{
2246 if (expect_false (ev_is_active (w))) 2726 if (expect_false (ev_is_active (w)))
… …
2248 2728
2249 if (w->reschedule_cb) 2729 if (w->reschedule_cb)
2250 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2730 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251 else if (w->interval) 2731 else if (w->interval)
2252 { 2732 {
2253 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2733 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2254 /* this formula differs from the one in periodic_reify because we do not always round up */ 2734 /* this formula differs from the one in periodic_reify because we do not always round up */
2255 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2735 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2256 } 2736 }
2257 else 2737 else
2258 ev_at (w) = w->offset; 2738 ev_at (w) = w->offset;
… …
2266 ANHE_at_cache (periodics [ev_active (w)]); 2746 ANHE_at_cache (periodics [ev_active (w)]);
2267 upheap (periodics, ev_active (w)); 2747 upheap (periodics, ev_active (w));
2268 2748
2269 EV_FREQUENT_CHECK; 2749 EV_FREQUENT_CHECK;
2270 2750
2271 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2751 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2272} 2752}
2273 2753
2274void noinline 2754void noinline
2275ev_periodic_stop (EV_P_ ev_periodic *w) 2755ev_periodic_stop (EV_P_ ev_periodic *w)
2276{ 2756{
… …
2281 EV_FREQUENT_CHECK; 2761 EV_FREQUENT_CHECK;
2282 2762
2283 { 2763 {
2284 int active = ev_active (w); 2764 int active = ev_active (w);
2285 2765
2286 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2766 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2287 2767
2288 --periodiccnt; 2768 --periodiccnt;
2289 2769
2290 if (expect_true (active < periodiccnt + HEAP0)) 2770 if (expect_true (active < periodiccnt + HEAP0))
2291 { 2771 {
2292 periodics [active] = periodics [periodiccnt + HEAP0]; 2772 periodics [active] = periodics [periodiccnt + HEAP0];
2293 adjustheap (periodics, periodiccnt, active); 2773 adjustheap (periodics, periodiccnt, active);
2294 } 2774 }
2295 } 2775 }
2296 2776
2297 EV_FREQUENT_CHECK;
2298
2299 ev_stop (EV_A_ (W)w); 2777 ev_stop (EV_A_ (W)w);
2778
2779 EV_FREQUENT_CHECK;
2300} 2780}
2301 2781
2302void noinline 2782void noinline
2303ev_periodic_again (EV_P_ ev_periodic *w) 2783ev_periodic_again (EV_P_ ev_periodic *w)
2304{ 2784{
… …
2310 2790
2311#ifndef SA_RESTART 2791#ifndef SA_RESTART
2312# define SA_RESTART 0 2792# define SA_RESTART 0
2313#endif 2793#endif
2314 2794
2795#if EV_SIGNAL_ENABLE
2796
2315void noinline 2797void noinline
2316ev_signal_start (EV_P_ ev_signal *w) 2798ev_signal_start (EV_P_ ev_signal *w)
2317{ 2799{
2318#if EV_MULTIPLICITY
2319 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2320#endif
2321 if (expect_false (ev_is_active (w))) 2800 if (expect_false (ev_is_active (w)))
2322 return; 2801 return;
2323 2802
2324 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2803 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2325 2804
2326 evpipe_init (EV_A); 2805#if EV_MULTIPLICITY
2806 assert (("libev: a signal must not be attached to two different loops",
2807 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2327 2808
2328 EV_FREQUENT_CHECK; 2809 signals [w->signum - 1].loop = EV_A;
2810#endif
2329 2811
2812 EV_FREQUENT_CHECK;
2813
2814#if EV_USE_SIGNALFD
2815 if (sigfd == -2)
2330 { 2816 {
2331#ifndef _WIN32 2817 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2332 sigset_t full, prev; 2818 if (sigfd < 0 && errno == EINVAL)
2333 sigfillset (&full); 2819 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2334 sigprocmask (SIG_SETMASK, &full, &prev);
2335#endif
2336 2820
2337 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2821 if (sigfd >= 0)
2822 {
2823 fd_intern (sigfd); /* doing it twice will not hurt */
2338 2824
2339#ifndef _WIN32 2825 sigemptyset (&sigfd_set);
2340 sigprocmask (SIG_SETMASK, &prev, 0); 2826
2341#endif 2827 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2828 ev_set_priority (&sigfd_w, EV_MAXPRI);
2829 ev_io_start (EV_A_ &sigfd_w);
2830 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2831 }
2342 } 2832 }
2833
2834 if (sigfd >= 0)
2835 {
2836 /* TODO: check .head */
2837 sigaddset (&sigfd_set, w->signum);
2838 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2839
2840 signalfd (sigfd, &sigfd_set, 0);
2841 }
2842#endif
2343 2843
2344 ev_start (EV_A_ (W)w, 1); 2844 ev_start (EV_A_ (W)w, 1);
2345 wlist_add (&signals [w->signum - 1].head, (WL)w); 2845 wlist_add (&signals [w->signum - 1].head, (WL)w);
2346 2846
2347 if (!((WL)w)->next) 2847 if (!((WL)w)->next)
2848# if EV_USE_SIGNALFD
2849 if (sigfd < 0) /*TODO*/
2850# endif
2348 { 2851 {
2349#if _WIN32 2852# ifdef _WIN32
2853 evpipe_init (EV_A);
2854
2350 signal (w->signum, ev_sighandler); 2855 signal (w->signum, ev_sighandler);
2351#else 2856# else
2352 struct sigaction sa; 2857 struct sigaction sa;
2858
2859 evpipe_init (EV_A);
2860
2353 sa.sa_handler = ev_sighandler; 2861 sa.sa_handler = ev_sighandler;
2354 sigfillset (&sa.sa_mask); 2862 sigfillset (&sa.sa_mask);
2355 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2863 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2356 sigaction (w->signum, &sa, 0); 2864 sigaction (w->signum, &sa, 0);
2865
2866 sigemptyset (&sa.sa_mask);
2867 sigaddset (&sa.sa_mask, w->signum);
2868 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2357#endif 2869#endif
2358 } 2870 }
2359 2871
2360 EV_FREQUENT_CHECK; 2872 EV_FREQUENT_CHECK;
2361} 2873}
2362 2874
2363void noinline 2875void noinline
… …
2371 2883
2372 wlist_del (&signals [w->signum - 1].head, (WL)w); 2884 wlist_del (&signals [w->signum - 1].head, (WL)w);
2373 ev_stop (EV_A_ (W)w); 2885 ev_stop (EV_A_ (W)w);
2374 2886
2375 if (!signals [w->signum - 1].head) 2887 if (!signals [w->signum - 1].head)
2888 {
2889#if EV_MULTIPLICITY
2890 signals [w->signum - 1].loop = 0; /* unattach from signal */
2891#endif
2892#if EV_USE_SIGNALFD
2893 if (sigfd >= 0)
2894 {
2895 sigset_t ss;
2896
2897 sigemptyset (&ss);
2898 sigaddset (&ss, w->signum);
2899 sigdelset (&sigfd_set, w->signum);
2900
2901 signalfd (sigfd, &sigfd_set, 0);
2902 sigprocmask (SIG_UNBLOCK, &ss, 0);
2903 }
2904 else
2905#endif
2376 signal (w->signum, SIG_DFL); 2906 signal (w->signum, SIG_DFL);
2907 }
2377 2908
2378 EV_FREQUENT_CHECK; 2909 EV_FREQUENT_CHECK;
2379} 2910}
2911
2912#endif
2913
2914#if EV_CHILD_ENABLE
2380 2915
2381void 2916void
2382ev_child_start (EV_P_ ev_child *w) 2917ev_child_start (EV_P_ ev_child *w)
2383{ 2918{
2384#if EV_MULTIPLICITY 2919#if EV_MULTIPLICITY
2385 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2920 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2386#endif 2921#endif
2387 if (expect_false (ev_is_active (w))) 2922 if (expect_false (ev_is_active (w)))
2388 return; 2923 return;
2389 2924
2390 EV_FREQUENT_CHECK; 2925 EV_FREQUENT_CHECK;
2391 2926
2392 ev_start (EV_A_ (W)w, 1); 2927 ev_start (EV_A_ (W)w, 1);
2393 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2928 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2394 2929
2395 EV_FREQUENT_CHECK; 2930 EV_FREQUENT_CHECK;
2396} 2931}
2397 2932
2398void 2933void
… …
2402 if (expect_false (!ev_is_active (w))) 2937 if (expect_false (!ev_is_active (w)))
2403 return; 2938 return;
2404 2939
2405 EV_FREQUENT_CHECK; 2940 EV_FREQUENT_CHECK;
2406 2941
2407 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2942 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2408 ev_stop (EV_A_ (W)w); 2943 ev_stop (EV_A_ (W)w);
2409 2944
2410 EV_FREQUENT_CHECK; 2945 EV_FREQUENT_CHECK;
2411} 2946}
2947
2948#endif
2412 2949
2413#if EV_STAT_ENABLE 2950#if EV_STAT_ENABLE
2414 2951
2415# ifdef _WIN32 2952# ifdef _WIN32
2416# undef lstat 2953# undef lstat
2417# define lstat(a,b) _stati64 (a,b) 2954# define lstat(a,b) _stati64 (a,b)
2418# endif 2955# endif
2419 2956
2420#define DEF_STAT_INTERVAL 5.0074891 2957#define DEF_STAT_INTERVAL 5.0074891
2958#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2421#define MIN_STAT_INTERVAL 0.1074891 2959#define MIN_STAT_INTERVAL 0.1074891
2422 2960
2423static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2961static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2424 2962
2425#if EV_USE_INOTIFY 2963#if EV_USE_INOTIFY
2426# define EV_INOTIFY_BUFSIZE 8192 2964
2965/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2966# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2427 2967
2428static void noinline 2968static void noinline
2429infy_add (EV_P_ ev_stat *w) 2969infy_add (EV_P_ ev_stat *w)
2430{ 2970{
2431 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); 2971 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);
2432 2972
2433 if (w->wd < 0) 2973 if (w->wd >= 0)
2974 {
2975 struct statfs sfs;
2976
2977 /* now local changes will be tracked by inotify, but remote changes won't */
2978 /* unless the filesystem is known to be local, we therefore still poll */
2979 /* also do poll on <2.6.25, but with normal frequency */
2980
2981 if (!fs_2625)
2982 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2983 else if (!statfs (w->path, &sfs)
2984 && (sfs.f_type == 0x1373 /* devfs */
2985 || sfs.f_type == 0xEF53 /* ext2/3 */
2986 || sfs.f_type == 0x3153464a /* jfs */
2987 || sfs.f_type == 0x52654973 /* reiser3 */
2988 || sfs.f_type == 0x01021994 /* tempfs */
2989 || sfs.f_type == 0x58465342 /* xfs */))
2990 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2991 else
2992 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2434 { 2993 }
2435 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2994 else
2995 {
2996 /* can't use inotify, continue to stat */
2997 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2436 2998
2437 /* monitor some parent directory for speedup hints */ 2999 /* if path is not there, monitor some parent directory for speedup hints */
2438 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3000 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2439 /* but an efficiency issue only */ 3001 /* but an efficiency issue only */
2440 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3002 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2441 { 3003 {
2442 char path [4096]; 3004 char path [4096];
… …
2447 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3009 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2448 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3010 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2449 3011
2450 char *pend = strrchr (path, '/'); 3012 char *pend = strrchr (path, '/');
2451 3013
2452 if (!pend) 3014 if (!pend || pend == path)
2453 break; /* whoops, no '/', complain to your admin */ 3015 break;
2454 3016
2455 *pend = 0; 3017 *pend = 0;
2456 w->wd = inotify_add_watch (fs_fd, path, mask); 3018 w->wd = inotify_add_watch (fs_fd, path, mask);
2457 } 3019 }
2458 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3020 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2459 } 3021 }
2460 } 3022 }
2461 else
2462 todo, on nfs etc., we need to poll every 60s or so
2463 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2464 3023
2465 if (w->wd >= 0) 3024 if (w->wd >= 0)
2466 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3025 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3026
3027 /* now re-arm timer, if required */
3028 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3029 ev_timer_again (EV_A_ &w->timer);
3030 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2467} 3031}
2468 3032
2469static void noinline 3033static void noinline
2470infy_del (EV_P_ ev_stat *w) 3034infy_del (EV_P_ ev_stat *w)
2471{ 3035{
… …
2474 3038
2475 if (wd < 0) 3039 if (wd < 0)
2476 return; 3040 return;
2477 3041
2478 w->wd = -2; 3042 w->wd = -2;
2479 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3043 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2480 wlist_del (&fs_hash [slot].head, (WL)w); 3044 wlist_del (&fs_hash [slot].head, (WL)w);
2481 3045
2482 /* remove this watcher, if others are watching it, they will rearm */ 3046 /* remove this watcher, if others are watching it, they will rearm */
2483 inotify_rm_watch (fs_fd, wd); 3047 inotify_rm_watch (fs_fd, wd);
2484} 3048}
… …
2486static void noinline 3050static void noinline
2487infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3051infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2488{ 3052{
2489 if (slot < 0) 3053 if (slot < 0)
2490 /* overflow, need to check for all hash slots */ 3054 /* overflow, need to check for all hash slots */
2491 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3055 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2492 infy_wd (EV_A_ slot, wd, ev); 3056 infy_wd (EV_A_ slot, wd, ev);
2493 else 3057 else
2494 { 3058 {
2495 WL w_; 3059 WL w_;
2496 3060
2497 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3061 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2498 { 3062 {
2499 ev_stat *w = (ev_stat *)w_; 3063 ev_stat *w = (ev_stat *)w_;
2500 w_ = w_->next; /* lets us remove this watcher and all before it */ 3064 w_ = w_->next; /* lets us remove this watcher and all before it */
2501 3065
2502 if (w->wd == wd || wd == -1) 3066 if (w->wd == wd || wd == -1)
2503 { 3067 {
2504 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3068 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2505 { 3069 {
3070 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2506 w->wd = -1; 3071 w->wd = -1;
2507 infy_add (EV_A_ w); /* re-add, no matter what */ 3072 infy_add (EV_A_ w); /* re-add, no matter what */
2508 } 3073 }
2509 3074
2510 stat_timer_cb (EV_A_ &w->timer, 0); 3075 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2515 3080
2516static void 3081static void
2517infy_cb (EV_P_ ev_io *w, int revents) 3082infy_cb (EV_P_ ev_io *w, int revents)
2518{ 3083{
2519 char buf [EV_INOTIFY_BUFSIZE]; 3084 char buf [EV_INOTIFY_BUFSIZE];
2520 struct inotify_event *ev = (struct inotify_event *)buf;
2521 int ofs; 3085 int ofs;
2522 int len = read (fs_fd, buf, sizeof (buf)); 3086 int len = read (fs_fd, buf, sizeof (buf));
2523 3087
2524 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3088 for (ofs = 0; ofs < len; )
3089 {
3090 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2525 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3091 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3092 ofs += sizeof (struct inotify_event) + ev->len;
3093 }
2526} 3094}
2527 3095
2528void inline_size 3096inline_size void
2529infy_init (EV_P) 3097ev_check_2625 (EV_P)
2530{ 3098{
2531 if (fs_fd != -2)
2532 return;
2533
2534 /* kernels < 2.6.25 are borked 3099 /* kernels < 2.6.25 are borked
2535 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3100 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2536 */ 3101 */
2537 { 3102 if (ev_linux_version () < 0x020619)
2538 struct utsname buf; 3103 return;
2539 int major, minor, micro;
2540 3104
3105 fs_2625 = 1;
3106}
3107
3108inline_size int
3109infy_newfd (void)
3110{
3111#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3112 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3113 if (fd >= 0)
3114 return fd;
3115#endif
3116 return inotify_init ();
3117}
3118
3119inline_size void
3120infy_init (EV_P)
3121{
3122 if (fs_fd != -2)
3123 return;
3124
2541 fs_fd = -1; 3125 fs_fd = -1;
2542 3126
2543 if (uname (&buf)) 3127 ev_check_2625 (EV_A);
2544 return;
2545 3128
2546 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2547 return;
2548
2549 if (major < 2
2550 || (major == 2 && minor < 6)
2551 || (major == 2 && minor == 6 && micro < 25))
2552 return;
2553 }
2554
2555 fs_fd = inotify_init (); 3129 fs_fd = infy_newfd ();
2556 3130
2557 if (fs_fd >= 0) 3131 if (fs_fd >= 0)
2558 { 3132 {
3133 fd_intern (fs_fd);
2559 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3134 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2560 ev_set_priority (&fs_w, EV_MAXPRI); 3135 ev_set_priority (&fs_w, EV_MAXPRI);
2561 ev_io_start (EV_A_ &fs_w); 3136 ev_io_start (EV_A_ &fs_w);
3137 ev_unref (EV_A);
2562 } 3138 }
2563} 3139}
2564 3140
2565void inline_size 3141inline_size void
2566infy_fork (EV_P) 3142infy_fork (EV_P)
2567{ 3143{
2568 int slot; 3144 int slot;
2569 3145
2570 if (fs_fd < 0) 3146 if (fs_fd < 0)
2571 return; 3147 return;
2572 3148
3149 ev_ref (EV_A);
3150 ev_io_stop (EV_A_ &fs_w);
2573 close (fs_fd); 3151 close (fs_fd);
2574 fs_fd = inotify_init (); 3152 fs_fd = infy_newfd ();
2575 3153
3154 if (fs_fd >= 0)
3155 {
3156 fd_intern (fs_fd);
3157 ev_io_set (&fs_w, fs_fd, EV_READ);
3158 ev_io_start (EV_A_ &fs_w);
3159 ev_unref (EV_A);
3160 }
3161
2576 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3162 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2577 { 3163 {
2578 WL w_ = fs_hash [slot].head; 3164 WL w_ = fs_hash [slot].head;
2579 fs_hash [slot].head = 0; 3165 fs_hash [slot].head = 0;
2580 3166
2581 while (w_) 3167 while (w_)
… …
2586 w->wd = -1; 3172 w->wd = -1;
2587 3173
2588 if (fs_fd >= 0) 3174 if (fs_fd >= 0)
2589 infy_add (EV_A_ w); /* re-add, no matter what */ 3175 infy_add (EV_A_ w); /* re-add, no matter what */
2590 else 3176 else
3177 {
3178 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3179 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2591 ev_timer_start (EV_A_ &w->timer); 3180 ev_timer_again (EV_A_ &w->timer);
3181 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3182 }
2592 } 3183 }
2593 } 3184 }
2594} 3185}
2595 3186
2596#endif 3187#endif
… …
2613static void noinline 3204static void noinline
2614stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3205stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2615{ 3206{
2616 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3207 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2617 3208
2618 /* we copy this here each the time so that */ 3209 ev_statdata prev = w->attr;
2619 /* prev has the old value when the callback gets invoked */
2620 w->prev = w->attr;
2621 ev_stat_stat (EV_A_ w); 3210 ev_stat_stat (EV_A_ w);
2622 3211
2623 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3212 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2624 if ( 3213 if (
2625 w->prev.st_dev != w->attr.st_dev 3214 prev.st_dev != w->attr.st_dev
2626 || w->prev.st_ino != w->attr.st_ino 3215 || prev.st_ino != w->attr.st_ino
2627 || w->prev.st_mode != w->attr.st_mode 3216 || prev.st_mode != w->attr.st_mode
2628 || w->prev.st_nlink != w->attr.st_nlink 3217 || prev.st_nlink != w->attr.st_nlink
2629 || w->prev.st_uid != w->attr.st_uid 3218 || prev.st_uid != w->attr.st_uid
2630 || w->prev.st_gid != w->attr.st_gid 3219 || prev.st_gid != w->attr.st_gid
2631 || w->prev.st_rdev != w->attr.st_rdev 3220 || prev.st_rdev != w->attr.st_rdev
2632 || w->prev.st_size != w->attr.st_size 3221 || prev.st_size != w->attr.st_size
2633 || w->prev.st_atime != w->attr.st_atime 3222 || prev.st_atime != w->attr.st_atime
2634 || w->prev.st_mtime != w->attr.st_mtime 3223 || prev.st_mtime != w->attr.st_mtime
2635 || w->prev.st_ctime != w->attr.st_ctime 3224 || prev.st_ctime != w->attr.st_ctime
2636 ) { 3225 ) {
3226 /* we only update w->prev on actual differences */
3227 /* in case we test more often than invoke the callback, */
3228 /* to ensure that prev is always different to attr */
3229 w->prev = prev;
3230
2637 #if EV_USE_INOTIFY 3231 #if EV_USE_INOTIFY
2638 if (fs_fd >= 0) 3232 if (fs_fd >= 0)
2639 { 3233 {
2640 infy_del (EV_A_ w); 3234 infy_del (EV_A_ w);
2641 infy_add (EV_A_ w); 3235 infy_add (EV_A_ w);
… …
2651ev_stat_start (EV_P_ ev_stat *w) 3245ev_stat_start (EV_P_ ev_stat *w)
2652{ 3246{
2653 if (expect_false (ev_is_active (w))) 3247 if (expect_false (ev_is_active (w)))
2654 return; 3248 return;
2655 3249
2656 /* since we use memcmp, we need to clear any padding data etc. */
2657 memset (&w->prev, 0, sizeof (ev_statdata));
2658 memset (&w->attr, 0, sizeof (ev_statdata));
2659
2660 ev_stat_stat (EV_A_ w); 3250 ev_stat_stat (EV_A_ w);
2661 3251
3252 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2662 if (w->interval < MIN_STAT_INTERVAL) 3253 w->interval = MIN_STAT_INTERVAL;
2663 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2664 3254
2665 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3255 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2666 ev_set_priority (&w->timer, ev_priority (w)); 3256 ev_set_priority (&w->timer, ev_priority (w));
2667 3257
2668#if EV_USE_INOTIFY 3258#if EV_USE_INOTIFY
2669 infy_init (EV_A); 3259 infy_init (EV_A);
2670 3260
2671 if (fs_fd >= 0) 3261 if (fs_fd >= 0)
2672 infy_add (EV_A_ w); 3262 infy_add (EV_A_ w);
2673 else 3263 else
2674#endif 3264#endif
3265 {
2675 ev_timer_start (EV_A_ &w->timer); 3266 ev_timer_again (EV_A_ &w->timer);
3267 ev_unref (EV_A);
3268 }
2676 3269
2677 ev_start (EV_A_ (W)w, 1); 3270 ev_start (EV_A_ (W)w, 1);
2678 3271
2679 EV_FREQUENT_CHECK; 3272 EV_FREQUENT_CHECK;
2680} 3273}
… …
2689 EV_FREQUENT_CHECK; 3282 EV_FREQUENT_CHECK;
2690 3283
2691#if EV_USE_INOTIFY 3284#if EV_USE_INOTIFY
2692 infy_del (EV_A_ w); 3285 infy_del (EV_A_ w);
2693#endif 3286#endif
3287
3288 if (ev_is_active (&w->timer))
3289 {
3290 ev_ref (EV_A);
2694 ev_timer_stop (EV_A_ &w->timer); 3291 ev_timer_stop (EV_A_ &w->timer);
3292 }
2695 3293
2696 ev_stop (EV_A_ (W)w); 3294 ev_stop (EV_A_ (W)w);
2697 3295
2698 EV_FREQUENT_CHECK; 3296 EV_FREQUENT_CHECK;
2699} 3297}
… …
2744 3342
2745 EV_FREQUENT_CHECK; 3343 EV_FREQUENT_CHECK;
2746} 3344}
2747#endif 3345#endif
2748 3346
3347#if EV_PREPARE_ENABLE
2749void 3348void
2750ev_prepare_start (EV_P_ ev_prepare *w) 3349ev_prepare_start (EV_P_ ev_prepare *w)
2751{ 3350{
2752 if (expect_false (ev_is_active (w))) 3351 if (expect_false (ev_is_active (w)))
2753 return; 3352 return;
… …
2779 3378
2780 ev_stop (EV_A_ (W)w); 3379 ev_stop (EV_A_ (W)w);
2781 3380
2782 EV_FREQUENT_CHECK; 3381 EV_FREQUENT_CHECK;
2783} 3382}
3383#endif
2784 3384
3385#if EV_CHECK_ENABLE
2785void 3386void
2786ev_check_start (EV_P_ ev_check *w) 3387ev_check_start (EV_P_ ev_check *w)
2787{ 3388{
2788 if (expect_false (ev_is_active (w))) 3389 if (expect_false (ev_is_active (w)))
2789 return; 3390 return;
… …
2815 3416
2816 ev_stop (EV_A_ (W)w); 3417 ev_stop (EV_A_ (W)w);
2817 3418
2818 EV_FREQUENT_CHECK; 3419 EV_FREQUENT_CHECK;
2819} 3420}
3421#endif
2820 3422
2821#if EV_EMBED_ENABLE 3423#if EV_EMBED_ENABLE
2822void noinline 3424void noinline
2823ev_embed_sweep (EV_P_ ev_embed *w) 3425ev_embed_sweep (EV_P_ ev_embed *w)
2824{ 3426{
2825 ev_loop (w->other, EVLOOP_NONBLOCK); 3427 ev_run (w->other, EVRUN_NOWAIT);
2826} 3428}
2827 3429
2828static void 3430static void
2829embed_io_cb (EV_P_ ev_io *io, int revents) 3431embed_io_cb (EV_P_ ev_io *io, int revents)
2830{ 3432{
2831 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3433 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2832 3434
2833 if (ev_cb (w)) 3435 if (ev_cb (w))
2834 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3436 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2835 else 3437 else
2836 ev_loop (w->other, EVLOOP_NONBLOCK); 3438 ev_run (w->other, EVRUN_NOWAIT);
2837} 3439}
2838 3440
2839static void 3441static void
2840embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3442embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2841{ 3443{
2842 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3444 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2843 3445
2844 { 3446 {
2845 struct ev_loop *loop = w->other; 3447 EV_P = w->other;
2846 3448
2847 while (fdchangecnt) 3449 while (fdchangecnt)
2848 { 3450 {
2849 fd_reify (EV_A); 3451 fd_reify (EV_A);
2850 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3452 ev_run (EV_A_ EVRUN_NOWAIT);
2851 } 3453 }
2852 } 3454 }
2853} 3455}
2854 3456
2855static void 3457static void
2856embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3458embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2857{ 3459{
2858 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3460 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2859 3461
3462 ev_embed_stop (EV_A_ w);
3463
2860 { 3464 {
2861 struct ev_loop *loop = w->other; 3465 EV_P = w->other;
2862 3466
2863 ev_loop_fork (EV_A); 3467 ev_loop_fork (EV_A);
3468 ev_run (EV_A_ EVRUN_NOWAIT);
2864 } 3469 }
3470
3471 ev_embed_start (EV_A_ w);
2865} 3472}
2866 3473
2867#if 0 3474#if 0
2868static void 3475static void
2869embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3476embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2877{ 3484{
2878 if (expect_false (ev_is_active (w))) 3485 if (expect_false (ev_is_active (w)))
2879 return; 3486 return;
2880 3487
2881 { 3488 {
2882 struct ev_loop *loop = w->other; 3489 EV_P = w->other;
2883 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3490 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2884 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3491 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2885 } 3492 }
2886 3493
2887 EV_FREQUENT_CHECK; 3494 EV_FREQUENT_CHECK;
2888 3495
… …
2914 3521
2915 ev_io_stop (EV_A_ &w->io); 3522 ev_io_stop (EV_A_ &w->io);
2916 ev_prepare_stop (EV_A_ &w->prepare); 3523 ev_prepare_stop (EV_A_ &w->prepare);
2917 ev_fork_stop (EV_A_ &w->fork); 3524 ev_fork_stop (EV_A_ &w->fork);
2918 3525
3526 ev_stop (EV_A_ (W)w);
3527
2919 EV_FREQUENT_CHECK; 3528 EV_FREQUENT_CHECK;
2920} 3529}
2921#endif 3530#endif
2922 3531
2923#if EV_FORK_ENABLE 3532#if EV_FORK_ENABLE
… …
2963ev_async_start (EV_P_ ev_async *w) 3572ev_async_start (EV_P_ ev_async *w)
2964{ 3573{
2965 if (expect_false (ev_is_active (w))) 3574 if (expect_false (ev_is_active (w)))
2966 return; 3575 return;
2967 3576
3577 w->sent = 0;
3578
2968 evpipe_init (EV_A); 3579 evpipe_init (EV_A);
2969 3580
2970 EV_FREQUENT_CHECK; 3581 EV_FREQUENT_CHECK;
2971 3582
2972 ev_start (EV_A_ (W)w, ++asynccnt); 3583 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2999 3610
3000void 3611void
3001ev_async_send (EV_P_ ev_async *w) 3612ev_async_send (EV_P_ ev_async *w)
3002{ 3613{
3003 w->sent = 1; 3614 w->sent = 1;
3004 evpipe_write (EV_A_ &gotasync); 3615 evpipe_write (EV_A_ &async_pending);
3005} 3616}
3006#endif 3617#endif
3007 3618
3008/*****************************************************************************/ 3619/*****************************************************************************/
3009 3620
… …
3049{ 3660{
3050 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3051 3662
3052 if (expect_false (!once)) 3663 if (expect_false (!once))
3053 { 3664 {
3054 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3665 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3055 return; 3666 return;
3056 } 3667 }
3057 3668
3058 once->cb = cb; 3669 once->cb = cb;
3059 once->arg = arg; 3670 once->arg = arg;
… …
3071 ev_timer_set (&once->to, timeout, 0.); 3682 ev_timer_set (&once->to, timeout, 0.);
3072 ev_timer_start (EV_A_ &once->to); 3683 ev_timer_start (EV_A_ &once->to);
3073 } 3684 }
3074} 3685}
3075 3686
3687/*****************************************************************************/
3688
3689#if EV_WALK_ENABLE
3690void
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3692{
3693 int i, j;
3694 ev_watcher_list *wl, *wn;
3695
3696 if (types & (EV_IO | EV_EMBED))
3697 for (i = 0; i < anfdmax; ++i)
3698 for (wl = anfds [i].head; wl; )
3699 {
3700 wn = wl->next;
3701
3702#if EV_EMBED_ENABLE
3703 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3704 {
3705 if (types & EV_EMBED)
3706 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3707 }
3708 else
3709#endif
3710#if EV_USE_INOTIFY
3711 if (ev_cb ((ev_io *)wl) == infy_cb)
3712 ;
3713 else
3714#endif
3715 if ((ev_io *)wl != &pipe_w)
3716 if (types & EV_IO)
3717 cb (EV_A_ EV_IO, wl);
3718
3719 wl = wn;
3720 }
3721
3722 if (types & (EV_TIMER | EV_STAT))
3723 for (i = timercnt + HEAP0; i-- > HEAP0; )
3724#if EV_STAT_ENABLE
3725 /*TODO: timer is not always active*/
3726 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3727 {
3728 if (types & EV_STAT)
3729 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3730 }
3731 else
3732#endif
3733 if (types & EV_TIMER)
3734 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3735
3736#if EV_PERIODIC_ENABLE
3737 if (types & EV_PERIODIC)
3738 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif
3741
3742#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; )
3745 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif
3748
3749#if EV_FORK_ENABLE
3750 if (types & EV_FORK)
3751 for (i = forkcnt; i--; )
3752 if (ev_cb (forks [i]) != embed_fork_cb)
3753 cb (EV_A_ EV_FORK, forks [i]);
3754#endif
3755
3756#if EV_ASYNC_ENABLE
3757 if (types & EV_ASYNC)
3758 for (i = asynccnt; i--; )
3759 cb (EV_A_ EV_ASYNC, asyncs [i]);
3760#endif
3761
3762#if EV_PREPARE_ENABLE
3763 if (types & EV_PREPARE)
3764 for (i = preparecnt; i--; )
3765# if EV_EMBED_ENABLE
3766 if (ev_cb (prepares [i]) != embed_prepare_cb)
3767# endif
3768 cb (EV_A_ EV_PREPARE, prepares [i]);
3769#endif
3770
3771#if EV_CHECK_ENABLE
3772 if (types & EV_CHECK)
3773 for (i = checkcnt; i--; )
3774 cb (EV_A_ EV_CHECK, checks [i]);
3775#endif
3776
3777#if EV_SIGNAL_ENABLE
3778 if (types & EV_SIGNAL)
3779 for (i = 0; i < EV_NSIG - 1; ++i)
3780 for (wl = signals [i].head; wl; )
3781 {
3782 wn = wl->next;
3783 cb (EV_A_ EV_SIGNAL, wl);
3784 wl = wn;
3785 }
3786#endif
3787
3788#if EV_CHILD_ENABLE
3789 if (types & EV_CHILD)
3790 for (i = (EV_PID_HASHSIZE); i--; )
3791 for (wl = childs [i]; wl; )
3792 {
3793 wn = wl->next;
3794 cb (EV_A_ EV_CHILD, wl);
3795 wl = wn;
3796 }
3797#endif
3798/* EV_STAT 0x00001000 /* stat data changed */
3799/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3800}
3801#endif
3802
3076#if EV_MULTIPLICITY 3803#if EV_MULTIPLICITY
3077 #include "ev_wrap.h" 3804 #include "ev_wrap.h"
3078#endif 3805#endif
3079 3806
3080#ifdef __cplusplus 3807EV_CPP(})
3081}
3082#endif
3083 3808

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines