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Comparing libev/ev.c (file contents):
Revision 1.273 by root, Mon Nov 3 14:27:06 2008 UTC vs.
Revision 1.368 by root, Mon Jan 17 12:11:11 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
130# endif 157# endif
131 158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
… …
160# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 192# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
164# endif 195# endif
196# undef EV_AVOID_STDIO
165#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
166 206
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
236
237#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else
241# define EV_USE_CLOCK_SYSCALL 0
242# endif
243#endif
168 244
169#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 248# else
173# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
174# endif 250# endif
175#endif 251#endif
176 252
177#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 255#endif
180 256
181#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 260# else
185# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
186# endif 262# endif
187#endif 263#endif
188 264
189#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 267#endif
192 268
193#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
194# ifdef _WIN32 270# ifdef _WIN32
195# define EV_USE_POLL 0 271# define EV_USE_POLL 0
196# else 272# else
197# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 274# endif
199#endif 275#endif
200 276
201#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 280# else
205# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
206# endif 282# endif
207#endif 283#endif
208 284
… …
214# define EV_USE_PORT 0 290# define EV_USE_PORT 0
215#endif 291#endif
216 292
217#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 296# else
221# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
222# endif 298# endif
223#endif 299#endif
224 300
225#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 303#endif
232 304
233#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 307#endif
240 308
241#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 312# else
245# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
314# endif
315#endif
316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
246# endif 322# endif
247#endif 323#endif
248 324
249#if 0 /* debugging */ 325#if 0 /* debugging */
250# define EV_VERIFY 3 326# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
253#endif 329#endif
254 330
255#ifndef EV_VERIFY 331#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 333#endif
258 334
259#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 337#endif
262 338
263#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
265#endif 355#endif
266 356
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
268 364
269#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
272#endif 368#endif
… …
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 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
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 ev_printerr (msg);
597 ev_printerr (": ");
598 ev_printerr (strerror (errno));
599 ev_printerr ("\n");
600#else
403 perror (msg); 601 perror (msg);
602#endif
404 abort (); 603 abort ();
405 } 604 }
406} 605}
407 606
408static void * 607static void *
409ev_realloc_emul (void *ptr, long size) 608ev_realloc_emul (void *ptr, long size)
410{ 609{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
411 /* some systems, notably openbsd and darwin, fail to properly 613 /* some systems, notably openbsd and darwin, fail to properly
412 * implement realloc (x, 0) (as required by both ansi c-98 and 614 * implement realloc (x, 0) (as required by both ansi c-89 and
413 * the single unix specification, so work around them here. 615 * the single unix specification, so work around them here.
414 */ 616 */
415 617
416 if (size) 618 if (size)
417 return realloc (ptr, size); 619 return realloc (ptr, size);
418 620
419 free (ptr); 621 free (ptr);
420 return 0; 622 return 0;
623#endif
421} 624}
422 625
423static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
424 627
425void 628void
… …
433{ 636{
434 ptr = alloc (ptr, size); 637 ptr = alloc (ptr, size);
435 638
436 if (!ptr && size) 639 if (!ptr && size)
437 { 640 {
641#if EV_AVOID_STDIO
642 ev_printerr ("(libev) memory allocation failed, aborting.\n");
643#else
438 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 644 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
645#endif
439 abort (); 646 abort ();
440 } 647 }
441 648
442 return ptr; 649 return ptr;
443} 650}
… …
445#define ev_malloc(size) ev_realloc (0, (size)) 652#define ev_malloc(size) ev_realloc (0, (size))
446#define ev_free(ptr) ev_realloc ((ptr), 0) 653#define ev_free(ptr) ev_realloc ((ptr), 0)
447 654
448/*****************************************************************************/ 655/*****************************************************************************/
449 656
657/* set in reify when reification needed */
658#define EV_ANFD_REIFY 1
659
660/* file descriptor info structure */
450typedef struct 661typedef struct
451{ 662{
452 WL head; 663 WL head;
453 unsigned char events; 664 unsigned char events; /* the events watched for */
454 unsigned char reify; 665 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 */ 666 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
456 unsigned char unused; 667 unsigned char unused;
457#if EV_USE_EPOLL 668#if EV_USE_EPOLL
458 unsigned int egen; /* generation counter to counter epoll bugs */ 669 unsigned int egen; /* generation counter to counter epoll bugs */
459#endif 670#endif
460#if EV_SELECT_IS_WINSOCKET 671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
461 SOCKET handle; 672 SOCKET handle;
462#endif 673#endif
674#if EV_USE_IOCP
675 OVERLAPPED or, ow;
676#endif
463} ANFD; 677} ANFD;
464 678
679/* stores the pending event set for a given watcher */
465typedef struct 680typedef struct
466{ 681{
467 W w; 682 W w;
468 int events; 683 int events; /* the pending event set for the given watcher */
469} ANPENDING; 684} ANPENDING;
470 685
471#if EV_USE_INOTIFY 686#if EV_USE_INOTIFY
472/* hash table entry per inotify-id */ 687/* hash table entry per inotify-id */
473typedef struct 688typedef struct
… …
476} ANFS; 691} ANFS;
477#endif 692#endif
478 693
479/* Heap Entry */ 694/* Heap Entry */
480#if EV_HEAP_CACHE_AT 695#if EV_HEAP_CACHE_AT
696 /* a heap element */
481 typedef struct { 697 typedef struct {
482 ev_tstamp at; 698 ev_tstamp at;
483 WT w; 699 WT w;
484 } ANHE; 700 } ANHE;
485 701
486 #define ANHE_w(he) (he).w /* access watcher, read-write */ 702 #define ANHE_w(he) (he).w /* access watcher, read-write */
487 #define ANHE_at(he) (he).at /* access cached at, read-only */ 703 #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 */ 704 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
489#else 705#else
706 /* a heap element */
490 typedef WT ANHE; 707 typedef WT ANHE;
491 708
492 #define ANHE_w(he) (he) 709 #define ANHE_w(he) (he)
493 #define ANHE_at(he) (he)->at 710 #define ANHE_at(he) (he)->at
494 #define ANHE_at_cache(he) 711 #define ANHE_at_cache(he)
… …
518 735
519 static int ev_default_loop_ptr; 736 static int ev_default_loop_ptr;
520 737
521#endif 738#endif
522 739
740#if EV_FEATURE_API
741# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
742# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
743# define EV_INVOKE_PENDING invoke_cb (EV_A)
744#else
745# define EV_RELEASE_CB (void)0
746# define EV_ACQUIRE_CB (void)0
747# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
748#endif
749
750#define EVBREAK_RECURSE 0x80
751
523/*****************************************************************************/ 752/*****************************************************************************/
524 753
754#ifndef EV_HAVE_EV_TIME
525ev_tstamp 755ev_tstamp
526ev_time (void) 756ev_time (void)
527{ 757{
528#if EV_USE_REALTIME 758#if EV_USE_REALTIME
759 if (expect_true (have_realtime))
760 {
529 struct timespec ts; 761 struct timespec ts;
530 clock_gettime (CLOCK_REALTIME, &ts); 762 clock_gettime (CLOCK_REALTIME, &ts);
531 return ts.tv_sec + ts.tv_nsec * 1e-9; 763 return ts.tv_sec + ts.tv_nsec * 1e-9;
532#else 764 }
765#endif
766
533 struct timeval tv; 767 struct timeval tv;
534 gettimeofday (&tv, 0); 768 gettimeofday (&tv, 0);
535 return tv.tv_sec + tv.tv_usec * 1e-6; 769 return tv.tv_sec + tv.tv_usec * 1e-6;
536#endif
537} 770}
771#endif
538 772
539ev_tstamp inline_size 773inline_size ev_tstamp
540get_clock (void) 774get_clock (void)
541{ 775{
542#if EV_USE_MONOTONIC 776#if EV_USE_MONOTONIC
543 if (expect_true (have_monotonic)) 777 if (expect_true (have_monotonic))
544 { 778 {
… …
565 if (delay > 0.) 799 if (delay > 0.)
566 { 800 {
567#if EV_USE_NANOSLEEP 801#if EV_USE_NANOSLEEP
568 struct timespec ts; 802 struct timespec ts;
569 803
570 ts.tv_sec = (time_t)delay; 804 EV_TS_SET (ts, delay);
571 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
572
573 nanosleep (&ts, 0); 805 nanosleep (&ts, 0);
574#elif defined(_WIN32) 806#elif defined(_WIN32)
575 Sleep ((unsigned long)(delay * 1e3)); 807 Sleep ((unsigned long)(delay * 1e3));
576#else 808#else
577 struct timeval tv; 809 struct timeval tv;
578 810
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 */ 811 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
583 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 812 /* something not guaranteed by newer posix versions, but guaranteed */
584 /* by older ones */ 813 /* by older ones */
814 EV_TV_SET (tv, delay);
585 select (0, 0, 0, 0, &tv); 815 select (0, 0, 0, 0, &tv);
586#endif 816#endif
587 } 817 }
588} 818}
589 819
820inline_speed int
821ev_timeout_to_ms (ev_tstamp timeout)
822{
823 int ms = timeout * 1000. + .999999;
824
825 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
826}
827
590/*****************************************************************************/ 828/*****************************************************************************/
591 829
592#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 830#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
593 831
594int inline_size 832/* find a suitable new size for the given array, */
833/* hopefully by rounding to a nice-to-malloc size */
834inline_size int
595array_nextsize (int elem, int cur, int cnt) 835array_nextsize (int elem, int cur, int cnt)
596{ 836{
597 int ncur = cur + 1; 837 int ncur = cur + 1;
598 838
599 do 839 do
… …
640 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 880 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
641 } 881 }
642#endif 882#endif
643 883
644#define array_free(stem, idx) \ 884#define array_free(stem, idx) \
645 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 885 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
646 886
647/*****************************************************************************/ 887/*****************************************************************************/
888
889/* dummy callback for pending events */
890static void noinline
891pendingcb (EV_P_ ev_prepare *w, int revents)
892{
893}
648 894
649void noinline 895void noinline
650ev_feed_event (EV_P_ void *w, int revents) 896ev_feed_event (EV_P_ void *w, int revents)
651{ 897{
652 W w_ = (W)w; 898 W w_ = (W)w;
… …
661 pendings [pri][w_->pending - 1].w = w_; 907 pendings [pri][w_->pending - 1].w = w_;
662 pendings [pri][w_->pending - 1].events = revents; 908 pendings [pri][w_->pending - 1].events = revents;
663 } 909 }
664} 910}
665 911
666void inline_speed 912inline_speed void
913feed_reverse (EV_P_ W w)
914{
915 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
916 rfeeds [rfeedcnt++] = w;
917}
918
919inline_size void
920feed_reverse_done (EV_P_ int revents)
921{
922 do
923 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
924 while (rfeedcnt);
925}
926
927inline_speed void
667queue_events (EV_P_ W *events, int eventcnt, int type) 928queue_events (EV_P_ W *events, int eventcnt, int type)
668{ 929{
669 int i; 930 int i;
670 931
671 for (i = 0; i < eventcnt; ++i) 932 for (i = 0; i < eventcnt; ++i)
672 ev_feed_event (EV_A_ events [i], type); 933 ev_feed_event (EV_A_ events [i], type);
673} 934}
674 935
675/*****************************************************************************/ 936/*****************************************************************************/
676 937
677void inline_speed 938inline_speed void
678fd_event (EV_P_ int fd, int revents) 939fd_event_nocheck (EV_P_ int fd, int revents)
679{ 940{
680 ANFD *anfd = anfds + fd; 941 ANFD *anfd = anfds + fd;
681 ev_io *w; 942 ev_io *w;
682 943
683 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
687 if (ev) 948 if (ev)
688 ev_feed_event (EV_A_ (W)w, ev); 949 ev_feed_event (EV_A_ (W)w, ev);
689 } 950 }
690} 951}
691 952
953/* do not submit kernel events for fds that have reify set */
954/* because that means they changed while we were polling for new events */
955inline_speed void
956fd_event (EV_P_ int fd, int revents)
957{
958 ANFD *anfd = anfds + fd;
959
960 if (expect_true (!anfd->reify))
961 fd_event_nocheck (EV_A_ fd, revents);
962}
963
692void 964void
693ev_feed_fd_event (EV_P_ int fd, int revents) 965ev_feed_fd_event (EV_P_ int fd, int revents)
694{ 966{
695 if (fd >= 0 && fd < anfdmax) 967 if (fd >= 0 && fd < anfdmax)
696 fd_event (EV_A_ fd, revents); 968 fd_event_nocheck (EV_A_ fd, revents);
697} 969}
698 970
699void inline_size 971/* make sure the external fd watch events are in-sync */
972/* with the kernel/libev internal state */
973inline_size void
700fd_reify (EV_P) 974fd_reify (EV_P)
701{ 975{
702 int i; 976 int i;
703 977
704 for (i = 0; i < fdchangecnt; ++i) 978 for (i = 0; i < fdchangecnt; ++i)
705 { 979 {
706 int fd = fdchanges [i]; 980 int fd = fdchanges [i];
707 ANFD *anfd = anfds + fd; 981 ANFD *anfd = anfds + fd;
708 ev_io *w; 982 ev_io *w;
709 983
710 unsigned char events = 0; 984 unsigned char o_events = anfd->events;
985 unsigned char o_reify = anfd->reify;
711 986
712 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 987 anfd->reify = 0;
713 events |= (unsigned char)w->events;
714 988
715#if EV_SELECT_IS_WINSOCKET 989#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
716 if (events) 990 if (o_reify & EV__IOFDSET)
717 { 991 {
718 unsigned long arg; 992 unsigned long arg;
719 #ifdef EV_FD_TO_WIN32_HANDLE
720 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 993 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)); 994 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
995 printf ("oi %d %x\n", fd, anfd->handle);//D
725 } 996 }
726#endif 997#endif
727 998
999 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
728 { 1000 {
729 unsigned char o_events = anfd->events;
730 unsigned char o_reify = anfd->reify;
731
732 anfd->reify = 0;
733 anfd->events = events; 1001 anfd->events = 0;
734 1002
735 if (o_events != events || o_reify & EV_IOFDSET) 1003 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1004 anfd->events |= (unsigned char)w->events;
1005
1006 if (o_events != anfd->events)
1007 o_reify = EV__IOFDSET; /* actually |= */
1008 }
1009
1010 if (o_reify & EV__IOFDSET)
736 backend_modify (EV_A_ fd, o_events, events); 1011 backend_modify (EV_A_ fd, o_events, anfd->events);
737 }
738 } 1012 }
739 1013
740 fdchangecnt = 0; 1014 fdchangecnt = 0;
741} 1015}
742 1016
743void inline_size 1017/* something about the given fd changed */
1018inline_size void
744fd_change (EV_P_ int fd, int flags) 1019fd_change (EV_P_ int fd, int flags)
745{ 1020{
746 unsigned char reify = anfds [fd].reify; 1021 unsigned char reify = anfds [fd].reify;
747 anfds [fd].reify |= flags; 1022 anfds [fd].reify |= flags;
748 1023
… …
752 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1027 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
753 fdchanges [fdchangecnt - 1] = fd; 1028 fdchanges [fdchangecnt - 1] = fd;
754 } 1029 }
755} 1030}
756 1031
757void inline_speed 1032/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1033inline_speed void
758fd_kill (EV_P_ int fd) 1034fd_kill (EV_P_ int fd)
759{ 1035{
760 ev_io *w; 1036 ev_io *w;
761 1037
762 while ((w = (ev_io *)anfds [fd].head)) 1038 while ((w = (ev_io *)anfds [fd].head))
… …
764 ev_io_stop (EV_A_ w); 1040 ev_io_stop (EV_A_ w);
765 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1041 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
766 } 1042 }
767} 1043}
768 1044
769int inline_size 1045/* check whether the given fd is actually valid, for error recovery */
1046inline_size int
770fd_valid (int fd) 1047fd_valid (int fd)
771{ 1048{
772#ifdef _WIN32 1049#ifdef _WIN32
773 return _get_osfhandle (fd) != -1; 1050 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
774#else 1051#else
775 return fcntl (fd, F_GETFD) != -1; 1052 return fcntl (fd, F_GETFD) != -1;
776#endif 1053#endif
777} 1054}
778 1055
… …
796 1073
797 for (fd = anfdmax; fd--; ) 1074 for (fd = anfdmax; fd--; )
798 if (anfds [fd].events) 1075 if (anfds [fd].events)
799 { 1076 {
800 fd_kill (EV_A_ fd); 1077 fd_kill (EV_A_ fd);
801 return; 1078 break;
802 } 1079 }
803} 1080}
804 1081
805/* usually called after fork if backend needs to re-arm all fds from scratch */ 1082/* usually called after fork if backend needs to re-arm all fds from scratch */
806static void noinline 1083static void noinline
… …
811 for (fd = 0; fd < anfdmax; ++fd) 1088 for (fd = 0; fd < anfdmax; ++fd)
812 if (anfds [fd].events) 1089 if (anfds [fd].events)
813 { 1090 {
814 anfds [fd].events = 0; 1091 anfds [fd].events = 0;
815 anfds [fd].emask = 0; 1092 anfds [fd].emask = 0;
816 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1093 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
817 } 1094 }
818} 1095}
819 1096
1097/* used to prepare libev internal fd's */
1098/* this is not fork-safe */
1099inline_speed void
1100fd_intern (int fd)
1101{
1102#ifdef _WIN32
1103 unsigned long arg = 1;
1104 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1105#else
1106 fcntl (fd, F_SETFD, FD_CLOEXEC);
1107 fcntl (fd, F_SETFL, O_NONBLOCK);
1108#endif
1109}
1110
820/*****************************************************************************/ 1111/*****************************************************************************/
821 1112
822/* 1113/*
823 * the heap functions want a real array index. array index 0 uis guaranteed to not 1114 * 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 1115 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
825 * the branching factor of the d-tree. 1116 * the branching factor of the d-tree.
826 */ 1117 */
827 1118
828/* 1119/*
… …
837#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1128#define HEAP0 (DHEAP - 1) /* index of first element in heap */
838#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1129#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
839#define UPHEAP_DONE(p,k) ((p) == (k)) 1130#define UPHEAP_DONE(p,k) ((p) == (k))
840 1131
841/* away from the root */ 1132/* away from the root */
842void inline_speed 1133inline_speed void
843downheap (ANHE *heap, int N, int k) 1134downheap (ANHE *heap, int N, int k)
844{ 1135{
845 ANHE he = heap [k]; 1136 ANHE he = heap [k];
846 ANHE *E = heap + N + HEAP0; 1137 ANHE *E = heap + N + HEAP0;
847 1138
… …
887#define HEAP0 1 1178#define HEAP0 1
888#define HPARENT(k) ((k) >> 1) 1179#define HPARENT(k) ((k) >> 1)
889#define UPHEAP_DONE(p,k) (!(p)) 1180#define UPHEAP_DONE(p,k) (!(p))
890 1181
891/* away from the root */ 1182/* away from the root */
892void inline_speed 1183inline_speed void
893downheap (ANHE *heap, int N, int k) 1184downheap (ANHE *heap, int N, int k)
894{ 1185{
895 ANHE he = heap [k]; 1186 ANHE he = heap [k];
896 1187
897 for (;;) 1188 for (;;)
898 { 1189 {
899 int c = k << 1; 1190 int c = k << 1;
900 1191
901 if (c > N + HEAP0 - 1) 1192 if (c >= N + HEAP0)
902 break; 1193 break;
903 1194
904 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1195 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
905 ? 1 : 0; 1196 ? 1 : 0;
906 1197
… …
917 ev_active (ANHE_w (he)) = k; 1208 ev_active (ANHE_w (he)) = k;
918} 1209}
919#endif 1210#endif
920 1211
921/* towards the root */ 1212/* towards the root */
922void inline_speed 1213inline_speed void
923upheap (ANHE *heap, int k) 1214upheap (ANHE *heap, int k)
924{ 1215{
925 ANHE he = heap [k]; 1216 ANHE he = heap [k];
926 1217
927 for (;;) 1218 for (;;)
… …
938 1229
939 heap [k] = he; 1230 heap [k] = he;
940 ev_active (ANHE_w (he)) = k; 1231 ev_active (ANHE_w (he)) = k;
941} 1232}
942 1233
943void inline_size 1234/* move an element suitably so it is in a correct place */
1235inline_size void
944adjustheap (ANHE *heap, int N, int k) 1236adjustheap (ANHE *heap, int N, int k)
945{ 1237{
946 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1238 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
947 upheap (heap, k); 1239 upheap (heap, k);
948 else 1240 else
949 downheap (heap, N, k); 1241 downheap (heap, N, k);
950} 1242}
951 1243
952/* rebuild the heap: this function is used only once and executed rarely */ 1244/* rebuild the heap: this function is used only once and executed rarely */
953void inline_size 1245inline_size void
954reheap (ANHE *heap, int N) 1246reheap (ANHE *heap, int N)
955{ 1247{
956 int i; 1248 int i;
957 1249
958 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1250 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
961 upheap (heap, i + HEAP0); 1253 upheap (heap, i + HEAP0);
962} 1254}
963 1255
964/*****************************************************************************/ 1256/*****************************************************************************/
965 1257
1258/* associate signal watchers to a signal signal */
966typedef struct 1259typedef struct
967{ 1260{
1261 EV_ATOMIC_T pending;
1262#if EV_MULTIPLICITY
1263 EV_P;
1264#endif
968 WL head; 1265 WL head;
969 EV_ATOMIC_T gotsig;
970} ANSIG; 1266} ANSIG;
971 1267
972static ANSIG *signals; 1268static ANSIG signals [EV_NSIG - 1];
973static int signalmax;
974
975static EV_ATOMIC_T gotsig;
976 1269
977/*****************************************************************************/ 1270/*****************************************************************************/
978 1271
979void inline_speed 1272#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 1273
991static void noinline 1274static void noinline
992evpipe_init (EV_P) 1275evpipe_init (EV_P)
993{ 1276{
994 if (!ev_is_active (&pipeev)) 1277 if (!ev_is_active (&pipe_w))
995 { 1278 {
996#if EV_USE_EVENTFD 1279# if EV_USE_EVENTFD
1280 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1281 if (evfd < 0 && errno == EINVAL)
997 if ((evfd = eventfd (0, 0)) >= 0) 1282 evfd = eventfd (0, 0);
1283
1284 if (evfd >= 0)
998 { 1285 {
999 evpipe [0] = -1; 1286 evpipe [0] = -1;
1000 fd_intern (evfd); 1287 fd_intern (evfd); /* doing it twice doesn't hurt */
1001 ev_io_set (&pipeev, evfd, EV_READ); 1288 ev_io_set (&pipe_w, evfd, EV_READ);
1002 } 1289 }
1003 else 1290 else
1004#endif 1291# endif
1005 { 1292 {
1006 while (pipe (evpipe)) 1293 while (pipe (evpipe))
1007 ev_syserr ("(libev) error creating signal/async pipe"); 1294 ev_syserr ("(libev) error creating signal/async pipe");
1008 1295
1009 fd_intern (evpipe [0]); 1296 fd_intern (evpipe [0]);
1010 fd_intern (evpipe [1]); 1297 fd_intern (evpipe [1]);
1011 ev_io_set (&pipeev, evpipe [0], EV_READ); 1298 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1012 } 1299 }
1013 1300
1014 ev_io_start (EV_A_ &pipeev); 1301 ev_io_start (EV_A_ &pipe_w);
1015 ev_unref (EV_A); /* watcher should not keep loop alive */ 1302 ev_unref (EV_A); /* watcher should not keep loop alive */
1016 } 1303 }
1017} 1304}
1018 1305
1019void inline_size 1306inline_size void
1020evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1307evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1021{ 1308{
1022 if (!*flag) 1309 if (!*flag)
1023 { 1310 {
1024 int old_errno = errno; /* save errno because write might clobber it */ 1311 int old_errno = errno; /* save errno because write might clobber it */
1312 char dummy;
1025 1313
1026 *flag = 1; 1314 *flag = 1;
1027 1315
1028#if EV_USE_EVENTFD 1316#if EV_USE_EVENTFD
1029 if (evfd >= 0) 1317 if (evfd >= 0)
… …
1031 uint64_t counter = 1; 1319 uint64_t counter = 1;
1032 write (evfd, &counter, sizeof (uint64_t)); 1320 write (evfd, &counter, sizeof (uint64_t));
1033 } 1321 }
1034 else 1322 else
1035#endif 1323#endif
1324 /* win32 people keep sending patches that change this write() to send() */
1325 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1326 /* so when you think this write should be a send instead, please find out */
1327 /* where your send() is from - it's definitely not the microsoft send, and */
1328 /* tell me. thank you. */
1036 write (evpipe [1], &old_errno, 1); 1329 write (evpipe [1], &dummy, 1);
1037 1330
1038 errno = old_errno; 1331 errno = old_errno;
1039 } 1332 }
1040} 1333}
1041 1334
1335/* called whenever the libev signal pipe */
1336/* got some events (signal, async) */
1042static void 1337static void
1043pipecb (EV_P_ ev_io *iow, int revents) 1338pipecb (EV_P_ ev_io *iow, int revents)
1044{ 1339{
1340 int i;
1341
1045#if EV_USE_EVENTFD 1342#if EV_USE_EVENTFD
1046 if (evfd >= 0) 1343 if (evfd >= 0)
1047 { 1344 {
1048 uint64_t counter; 1345 uint64_t counter;
1049 read (evfd, &counter, sizeof (uint64_t)); 1346 read (evfd, &counter, sizeof (uint64_t));
1050 } 1347 }
1051 else 1348 else
1052#endif 1349#endif
1053 { 1350 {
1054 char dummy; 1351 char dummy;
1352 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1055 read (evpipe [0], &dummy, 1); 1353 read (evpipe [0], &dummy, 1);
1056 } 1354 }
1057 1355
1058 if (gotsig && ev_is_default_loop (EV_A)) 1356 if (sig_pending)
1059 { 1357 {
1060 int signum; 1358 sig_pending = 0;
1061 gotsig = 0;
1062 1359
1063 for (signum = signalmax; signum--; ) 1360 for (i = EV_NSIG - 1; i--; )
1064 if (signals [signum].gotsig) 1361 if (expect_false (signals [i].pending))
1065 ev_feed_signal_event (EV_A_ signum + 1); 1362 ev_feed_signal_event (EV_A_ i + 1);
1066 } 1363 }
1067 1364
1068#if EV_ASYNC_ENABLE 1365#if EV_ASYNC_ENABLE
1069 if (gotasync) 1366 if (async_pending)
1070 { 1367 {
1071 int i; 1368 async_pending = 0;
1072 gotasync = 0;
1073 1369
1074 for (i = asynccnt; i--; ) 1370 for (i = asynccnt; i--; )
1075 if (asyncs [i]->sent) 1371 if (asyncs [i]->sent)
1076 { 1372 {
1077 asyncs [i]->sent = 0; 1373 asyncs [i]->sent = 0;
… …
1081#endif 1377#endif
1082} 1378}
1083 1379
1084/*****************************************************************************/ 1380/*****************************************************************************/
1085 1381
1382void
1383ev_feed_signal (int signum)
1384{
1385#if EV_MULTIPLICITY
1386 EV_P = signals [signum - 1].loop;
1387
1388 if (!EV_A)
1389 return;
1390#endif
1391
1392 signals [signum - 1].pending = 1;
1393 evpipe_write (EV_A_ &sig_pending);
1394}
1395
1086static void 1396static void
1087ev_sighandler (int signum) 1397ev_sighandler (int signum)
1088{ 1398{
1089#if EV_MULTIPLICITY
1090 struct ev_loop *loop = &default_loop_struct;
1091#endif
1092
1093#if _WIN32 1399#ifdef _WIN32
1094 signal (signum, ev_sighandler); 1400 signal (signum, ev_sighandler);
1095#endif 1401#endif
1096 1402
1097 signals [signum - 1].gotsig = 1; 1403 ev_feed_signal (signum);
1098 evpipe_write (EV_A_ &gotsig);
1099} 1404}
1100 1405
1101void noinline 1406void noinline
1102ev_feed_signal_event (EV_P_ int signum) 1407ev_feed_signal_event (EV_P_ int signum)
1103{ 1408{
1104 WL w; 1409 WL w;
1105 1410
1411 if (expect_false (signum <= 0 || signum > EV_NSIG))
1412 return;
1413
1414 --signum;
1415
1106#if EV_MULTIPLICITY 1416#if EV_MULTIPLICITY
1107 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1417 /* it is permissible to try to feed a signal to the wrong loop */
1108#endif 1418 /* or, likely more useful, feeding a signal nobody is waiting for */
1109 1419
1110 --signum; 1420 if (expect_false (signals [signum].loop != EV_A))
1111
1112 if (signum < 0 || signum >= signalmax)
1113 return; 1421 return;
1422#endif
1114 1423
1115 signals [signum].gotsig = 0; 1424 signals [signum].pending = 0;
1116 1425
1117 for (w = signals [signum].head; w; w = w->next) 1426 for (w = signals [signum].head; w; w = w->next)
1118 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1427 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1119} 1428}
1120 1429
1430#if EV_USE_SIGNALFD
1431static void
1432sigfdcb (EV_P_ ev_io *iow, int revents)
1433{
1434 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1435
1436 for (;;)
1437 {
1438 ssize_t res = read (sigfd, si, sizeof (si));
1439
1440 /* not ISO-C, as res might be -1, but works with SuS */
1441 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1442 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1443
1444 if (res < (ssize_t)sizeof (si))
1445 break;
1446 }
1447}
1448#endif
1449
1450#endif
1451
1121/*****************************************************************************/ 1452/*****************************************************************************/
1122 1453
1454#if EV_CHILD_ENABLE
1123static WL childs [EV_PID_HASHSIZE]; 1455static WL childs [EV_PID_HASHSIZE];
1124
1125#ifndef _WIN32
1126 1456
1127static ev_signal childev; 1457static ev_signal childev;
1128 1458
1129#ifndef WIFCONTINUED 1459#ifndef WIFCONTINUED
1130# define WIFCONTINUED(status) 0 1460# define WIFCONTINUED(status) 0
1131#endif 1461#endif
1132 1462
1133void inline_speed 1463/* handle a single child status event */
1464inline_speed void
1134child_reap (EV_P_ int chain, int pid, int status) 1465child_reap (EV_P_ int chain, int pid, int status)
1135{ 1466{
1136 ev_child *w; 1467 ev_child *w;
1137 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1468 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1138 1469
1139 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1470 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1140 { 1471 {
1141 if ((w->pid == pid || !w->pid) 1472 if ((w->pid == pid || !w->pid)
1142 && (!traced || (w->flags & 1))) 1473 && (!traced || (w->flags & 1)))
1143 { 1474 {
1144 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1475 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1151 1482
1152#ifndef WCONTINUED 1483#ifndef WCONTINUED
1153# define WCONTINUED 0 1484# define WCONTINUED 0
1154#endif 1485#endif
1155 1486
1487/* called on sigchld etc., calls waitpid */
1156static void 1488static void
1157childcb (EV_P_ ev_signal *sw, int revents) 1489childcb (EV_P_ ev_signal *sw, int revents)
1158{ 1490{
1159 int pid, status; 1491 int pid, status;
1160 1492
… …
1168 /* make sure we are called again until all children have been reaped */ 1500 /* 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 */ 1501 /* 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); 1502 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1171 1503
1172 child_reap (EV_A_ pid, pid, status); 1504 child_reap (EV_A_ pid, pid, status);
1173 if (EV_PID_HASHSIZE > 1) 1505 if ((EV_PID_HASHSIZE) > 1)
1174 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1506 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1175} 1507}
1176 1508
1177#endif 1509#endif
1178 1510
1179/*****************************************************************************/ 1511/*****************************************************************************/
1180 1512
1513#if EV_USE_IOCP
1514# include "ev_iocp.c"
1515#endif
1181#if EV_USE_PORT 1516#if EV_USE_PORT
1182# include "ev_port.c" 1517# include "ev_port.c"
1183#endif 1518#endif
1184#if EV_USE_KQUEUE 1519#if EV_USE_KQUEUE
1185# include "ev_kqueue.c" 1520# include "ev_kqueue.c"
… …
1241 /* kqueue is borked on everything but netbsd apparently */ 1576 /* kqueue is borked on everything but netbsd apparently */
1242 /* it usually doesn't work correctly on anything but sockets and pipes */ 1577 /* it usually doesn't work correctly on anything but sockets and pipes */
1243 flags &= ~EVBACKEND_KQUEUE; 1578 flags &= ~EVBACKEND_KQUEUE;
1244#endif 1579#endif
1245#ifdef __APPLE__ 1580#ifdef __APPLE__
1246 // flags &= ~EVBACKEND_KQUEUE; for documentation 1581 /* only select works correctly on that "unix-certified" platform */
1247 flags &= ~EVBACKEND_POLL; 1582 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1583 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1584#endif
1585#ifdef __FreeBSD__
1586 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1248#endif 1587#endif
1249 1588
1250 return flags; 1589 return flags;
1251} 1590}
1252 1591
… …
1254ev_embeddable_backends (void) 1593ev_embeddable_backends (void)
1255{ 1594{
1256 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1595 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1257 1596
1258 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1597 /* 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 */ 1598 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1260 flags &= ~EVBACKEND_EPOLL; 1599 flags &= ~EVBACKEND_EPOLL;
1261 1600
1262 return flags; 1601 return flags;
1263} 1602}
1264 1603
1265unsigned int 1604unsigned int
1266ev_backend (EV_P) 1605ev_backend (EV_P)
1267{ 1606{
1268 return backend; 1607 return backend;
1269} 1608}
1270 1609
1610#if EV_FEATURE_API
1271unsigned int 1611unsigned int
1272ev_loop_count (EV_P) 1612ev_iteration (EV_P)
1273{ 1613{
1274 return loop_count; 1614 return loop_count;
1275} 1615}
1276 1616
1617unsigned int
1618ev_depth (EV_P)
1619{
1620 return loop_depth;
1621}
1622
1277void 1623void
1278ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1624ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1279{ 1625{
1280 io_blocktime = interval; 1626 io_blocktime = interval;
1281} 1627}
… …
1284ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1630ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1285{ 1631{
1286 timeout_blocktime = interval; 1632 timeout_blocktime = interval;
1287} 1633}
1288 1634
1635void
1636ev_set_userdata (EV_P_ void *data)
1637{
1638 userdata = data;
1639}
1640
1641void *
1642ev_userdata (EV_P)
1643{
1644 return userdata;
1645}
1646
1647void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1648{
1649 invoke_cb = invoke_pending_cb;
1650}
1651
1652void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1653{
1654 release_cb = release;
1655 acquire_cb = acquire;
1656}
1657#endif
1658
1659/* initialise a loop structure, must be zero-initialised */
1289static void noinline 1660static void noinline
1290loop_init (EV_P_ unsigned int flags) 1661loop_init (EV_P_ unsigned int flags)
1291{ 1662{
1292 if (!backend) 1663 if (!backend)
1293 { 1664 {
1665 origflags = flags;
1666
1667#if EV_USE_REALTIME
1668 if (!have_realtime)
1669 {
1670 struct timespec ts;
1671
1672 if (!clock_gettime (CLOCK_REALTIME, &ts))
1673 have_realtime = 1;
1674 }
1675#endif
1676
1294#if EV_USE_MONOTONIC 1677#if EV_USE_MONOTONIC
1678 if (!have_monotonic)
1295 { 1679 {
1296 struct timespec ts; 1680 struct timespec ts;
1681
1297 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1682 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1298 have_monotonic = 1; 1683 have_monotonic = 1;
1299 } 1684 }
1300#endif 1685#endif
1686
1687 /* pid check not overridable via env */
1688#ifndef _WIN32
1689 if (flags & EVFLAG_FORKCHECK)
1690 curpid = getpid ();
1691#endif
1692
1693 if (!(flags & EVFLAG_NOENV)
1694 && !enable_secure ()
1695 && getenv ("LIBEV_FLAGS"))
1696 flags = atoi (getenv ("LIBEV_FLAGS"));
1301 1697
1302 ev_rt_now = ev_time (); 1698 ev_rt_now = ev_time ();
1303 mn_now = get_clock (); 1699 mn_now = get_clock ();
1304 now_floor = mn_now; 1700 now_floor = mn_now;
1305 rtmn_diff = ev_rt_now - mn_now; 1701 rtmn_diff = ev_rt_now - mn_now;
1702#if EV_FEATURE_API
1703 invoke_cb = ev_invoke_pending;
1704#endif
1306 1705
1307 io_blocktime = 0.; 1706 io_blocktime = 0.;
1308 timeout_blocktime = 0.; 1707 timeout_blocktime = 0.;
1309 backend = 0; 1708 backend = 0;
1310 backend_fd = -1; 1709 backend_fd = -1;
1311 gotasync = 0; 1710 sig_pending = 0;
1711#if EV_ASYNC_ENABLE
1712 async_pending = 0;
1713#endif
1312#if EV_USE_INOTIFY 1714#if EV_USE_INOTIFY
1313 fs_fd = -2; 1715 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1314#endif 1716#endif
1315 1717#if EV_USE_SIGNALFD
1316 /* pid check not overridable via env */ 1718 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1317#ifndef _WIN32
1318 if (flags & EVFLAG_FORKCHECK)
1319 curpid = getpid ();
1320#endif 1719#endif
1321 1720
1322 if (!(flags & EVFLAG_NOENV) 1721 if (!(flags & EVBACKEND_MASK))
1323 && !enable_secure ()
1324 && getenv ("LIBEV_FLAGS"))
1325 flags = atoi (getenv ("LIBEV_FLAGS"));
1326
1327 if (!(flags & 0x0000ffffU))
1328 flags |= ev_recommended_backends (); 1722 flags |= ev_recommended_backends ();
1329 1723
1724#if EV_USE_IOCP
1725 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1726#endif
1330#if EV_USE_PORT 1727#if EV_USE_PORT
1331 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1728 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1332#endif 1729#endif
1333#if EV_USE_KQUEUE 1730#if EV_USE_KQUEUE
1334 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1731 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1341#endif 1738#endif
1342#if EV_USE_SELECT 1739#if EV_USE_SELECT
1343 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1740 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1344#endif 1741#endif
1345 1742
1743 ev_prepare_init (&pending_w, pendingcb);
1744
1745#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1346 ev_init (&pipeev, pipecb); 1746 ev_init (&pipe_w, pipecb);
1347 ev_set_priority (&pipeev, EV_MAXPRI); 1747 ev_set_priority (&pipe_w, EV_MAXPRI);
1748#endif
1348 } 1749 }
1349} 1750}
1350 1751
1351static void noinline 1752/* free up a loop structure */
1753void
1352loop_destroy (EV_P) 1754ev_loop_destroy (EV_P)
1353{ 1755{
1354 int i; 1756 int i;
1355 1757
1758#if EV_MULTIPLICITY
1759 /* mimic free (0) */
1760 if (!EV_A)
1761 return;
1762#endif
1763
1764#if EV_CLEANUP_ENABLE
1765 /* queue cleanup watchers (and execute them) */
1766 if (expect_false (cleanupcnt))
1767 {
1768 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1769 EV_INVOKE_PENDING;
1770 }
1771#endif
1772
1773#if EV_CHILD_ENABLE
1774 if (ev_is_active (&childev))
1775 {
1776 ev_ref (EV_A); /* child watcher */
1777 ev_signal_stop (EV_A_ &childev);
1778 }
1779#endif
1780
1356 if (ev_is_active (&pipeev)) 1781 if (ev_is_active (&pipe_w))
1357 { 1782 {
1358 ev_ref (EV_A); /* signal watcher */ 1783 /*ev_ref (EV_A);*/
1359 ev_io_stop (EV_A_ &pipeev); 1784 /*ev_io_stop (EV_A_ &pipe_w);*/
1360 1785
1361#if EV_USE_EVENTFD 1786#if EV_USE_EVENTFD
1362 if (evfd >= 0) 1787 if (evfd >= 0)
1363 close (evfd); 1788 close (evfd);
1364#endif 1789#endif
1365 1790
1366 if (evpipe [0] >= 0) 1791 if (evpipe [0] >= 0)
1367 { 1792 {
1368 close (evpipe [0]); 1793 EV_WIN32_CLOSE_FD (evpipe [0]);
1369 close (evpipe [1]); 1794 EV_WIN32_CLOSE_FD (evpipe [1]);
1370 } 1795 }
1371 } 1796 }
1797
1798#if EV_USE_SIGNALFD
1799 if (ev_is_active (&sigfd_w))
1800 close (sigfd);
1801#endif
1372 1802
1373#if EV_USE_INOTIFY 1803#if EV_USE_INOTIFY
1374 if (fs_fd >= 0) 1804 if (fs_fd >= 0)
1375 close (fs_fd); 1805 close (fs_fd);
1376#endif 1806#endif
1377 1807
1378 if (backend_fd >= 0) 1808 if (backend_fd >= 0)
1379 close (backend_fd); 1809 close (backend_fd);
1380 1810
1811#if EV_USE_IOCP
1812 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1813#endif
1381#if EV_USE_PORT 1814#if EV_USE_PORT
1382 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1815 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1383#endif 1816#endif
1384#if EV_USE_KQUEUE 1817#if EV_USE_KQUEUE
1385 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1818 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1400#if EV_IDLE_ENABLE 1833#if EV_IDLE_ENABLE
1401 array_free (idle, [i]); 1834 array_free (idle, [i]);
1402#endif 1835#endif
1403 } 1836 }
1404 1837
1405 ev_free (anfds); anfdmax = 0; 1838 ev_free (anfds); anfds = 0; anfdmax = 0;
1406 1839
1407 /* have to use the microsoft-never-gets-it-right macro */ 1840 /* have to use the microsoft-never-gets-it-right macro */
1841 array_free (rfeed, EMPTY);
1408 array_free (fdchange, EMPTY); 1842 array_free (fdchange, EMPTY);
1409 array_free (timer, EMPTY); 1843 array_free (timer, EMPTY);
1410#if EV_PERIODIC_ENABLE 1844#if EV_PERIODIC_ENABLE
1411 array_free (periodic, EMPTY); 1845 array_free (periodic, EMPTY);
1412#endif 1846#endif
1413#if EV_FORK_ENABLE 1847#if EV_FORK_ENABLE
1414 array_free (fork, EMPTY); 1848 array_free (fork, EMPTY);
1415#endif 1849#endif
1850#if EV_CLEANUP_ENABLE
1851 array_free (cleanup, EMPTY);
1852#endif
1416 array_free (prepare, EMPTY); 1853 array_free (prepare, EMPTY);
1417 array_free (check, EMPTY); 1854 array_free (check, EMPTY);
1418#if EV_ASYNC_ENABLE 1855#if EV_ASYNC_ENABLE
1419 array_free (async, EMPTY); 1856 array_free (async, EMPTY);
1420#endif 1857#endif
1421 1858
1422 backend = 0; 1859 backend = 0;
1860
1861#if EV_MULTIPLICITY
1862 if (ev_is_default_loop (EV_A))
1863#endif
1864 ev_default_loop_ptr = 0;
1865#if EV_MULTIPLICITY
1866 else
1867 ev_free (EV_A);
1868#endif
1423} 1869}
1424 1870
1425#if EV_USE_INOTIFY 1871#if EV_USE_INOTIFY
1426void inline_size infy_fork (EV_P); 1872inline_size void infy_fork (EV_P);
1427#endif 1873#endif
1428 1874
1429void inline_size 1875inline_size void
1430loop_fork (EV_P) 1876loop_fork (EV_P)
1431{ 1877{
1432#if EV_USE_PORT 1878#if EV_USE_PORT
1433 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1879 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1434#endif 1880#endif
… …
1440#endif 1886#endif
1441#if EV_USE_INOTIFY 1887#if EV_USE_INOTIFY
1442 infy_fork (EV_A); 1888 infy_fork (EV_A);
1443#endif 1889#endif
1444 1890
1445 if (ev_is_active (&pipeev)) 1891 if (ev_is_active (&pipe_w))
1446 { 1892 {
1447 /* this "locks" the handlers against writing to the pipe */ 1893 /* this "locks" the handlers against writing to the pipe */
1448 /* while we modify the fd vars */ 1894 /* while we modify the fd vars */
1449 gotsig = 1; 1895 sig_pending = 1;
1450#if EV_ASYNC_ENABLE 1896#if EV_ASYNC_ENABLE
1451 gotasync = 1; 1897 async_pending = 1;
1452#endif 1898#endif
1453 1899
1454 ev_ref (EV_A); 1900 ev_ref (EV_A);
1455 ev_io_stop (EV_A_ &pipeev); 1901 ev_io_stop (EV_A_ &pipe_w);
1456 1902
1457#if EV_USE_EVENTFD 1903#if EV_USE_EVENTFD
1458 if (evfd >= 0) 1904 if (evfd >= 0)
1459 close (evfd); 1905 close (evfd);
1460#endif 1906#endif
1461 1907
1462 if (evpipe [0] >= 0) 1908 if (evpipe [0] >= 0)
1463 { 1909 {
1464 close (evpipe [0]); 1910 EV_WIN32_CLOSE_FD (evpipe [0]);
1465 close (evpipe [1]); 1911 EV_WIN32_CLOSE_FD (evpipe [1]);
1466 } 1912 }
1467 1913
1914#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1468 evpipe_init (EV_A); 1915 evpipe_init (EV_A);
1469 /* now iterate over everything, in case we missed something */ 1916 /* now iterate over everything, in case we missed something */
1470 pipecb (EV_A_ &pipeev, EV_READ); 1917 pipecb (EV_A_ &pipe_w, EV_READ);
1918#endif
1471 } 1919 }
1472 1920
1473 postfork = 0; 1921 postfork = 0;
1474} 1922}
1475 1923
1476#if EV_MULTIPLICITY 1924#if EV_MULTIPLICITY
1477 1925
1478struct ev_loop * 1926struct ev_loop *
1479ev_loop_new (unsigned int flags) 1927ev_loop_new (unsigned int flags)
1480{ 1928{
1481 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1929 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1482 1930
1483 memset (loop, 0, sizeof (struct ev_loop)); 1931 memset (EV_A, 0, sizeof (struct ev_loop));
1484
1485 loop_init (EV_A_ flags); 1932 loop_init (EV_A_ flags);
1486 1933
1487 if (ev_backend (EV_A)) 1934 if (ev_backend (EV_A))
1488 return loop; 1935 return EV_A;
1489 1936
1937 ev_free (EV_A);
1490 return 0; 1938 return 0;
1491} 1939}
1492 1940
1493void 1941#endif /* multiplicity */
1494ev_loop_destroy (EV_P)
1495{
1496 loop_destroy (EV_A);
1497 ev_free (loop);
1498}
1499
1500void
1501ev_loop_fork (EV_P)
1502{
1503 postfork = 1; /* must be in line with ev_default_fork */
1504}
1505 1942
1506#if EV_VERIFY 1943#if EV_VERIFY
1507static void noinline 1944static void noinline
1508verify_watcher (EV_P_ W w) 1945verify_watcher (EV_P_ W w)
1509{ 1946{
1510 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1947 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1511 1948
1512 if (w->pending) 1949 if (w->pending)
1513 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1950 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1514} 1951}
1515 1952
1516static void noinline 1953static void noinline
1517verify_heap (EV_P_ ANHE *heap, int N) 1954verify_heap (EV_P_ ANHE *heap, int N)
1518{ 1955{
1519 int i; 1956 int i;
1520 1957
1521 for (i = HEAP0; i < N + HEAP0; ++i) 1958 for (i = HEAP0; i < N + HEAP0; ++i)
1522 { 1959 {
1523 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1960 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]))); 1961 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])))); 1962 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1526 1963
1527 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1964 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1528 } 1965 }
1529} 1966}
1530 1967
1531static void noinline 1968static void noinline
1532array_verify (EV_P_ W *ws, int cnt) 1969array_verify (EV_P_ W *ws, int cnt)
1533{ 1970{
1534 while (cnt--) 1971 while (cnt--)
1535 { 1972 {
1536 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1973 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1537 verify_watcher (EV_A_ ws [cnt]); 1974 verify_watcher (EV_A_ ws [cnt]);
1538 } 1975 }
1539} 1976}
1540#endif 1977#endif
1541 1978
1979#if EV_FEATURE_API
1542void 1980void
1543ev_loop_verify (EV_P) 1981ev_verify (EV_P)
1544{ 1982{
1545#if EV_VERIFY 1983#if EV_VERIFY
1546 int i; 1984 int i;
1547 WL w; 1985 WL w;
1548 1986
1549 assert (activecnt >= -1); 1987 assert (activecnt >= -1);
1550 1988
1551 assert (fdchangemax >= fdchangecnt); 1989 assert (fdchangemax >= fdchangecnt);
1552 for (i = 0; i < fdchangecnt; ++i) 1990 for (i = 0; i < fdchangecnt; ++i)
1553 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1991 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1554 1992
1555 assert (anfdmax >= 0); 1993 assert (anfdmax >= 0);
1556 for (i = 0; i < anfdmax; ++i) 1994 for (i = 0; i < anfdmax; ++i)
1557 for (w = anfds [i].head; w; w = w->next) 1995 for (w = anfds [i].head; w; w = w->next)
1558 { 1996 {
1559 verify_watcher (EV_A_ (W)w); 1997 verify_watcher (EV_A_ (W)w);
1560 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1998 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)); 1999 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1562 } 2000 }
1563 2001
1564 assert (timermax >= timercnt); 2002 assert (timermax >= timercnt);
1565 verify_heap (EV_A_ timers, timercnt); 2003 verify_heap (EV_A_ timers, timercnt);
1566 2004
… …
1582#if EV_FORK_ENABLE 2020#if EV_FORK_ENABLE
1583 assert (forkmax >= forkcnt); 2021 assert (forkmax >= forkcnt);
1584 array_verify (EV_A_ (W *)forks, forkcnt); 2022 array_verify (EV_A_ (W *)forks, forkcnt);
1585#endif 2023#endif
1586 2024
2025#if EV_CLEANUP_ENABLE
2026 assert (cleanupmax >= cleanupcnt);
2027 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2028#endif
2029
1587#if EV_ASYNC_ENABLE 2030#if EV_ASYNC_ENABLE
1588 assert (asyncmax >= asynccnt); 2031 assert (asyncmax >= asynccnt);
1589 array_verify (EV_A_ (W *)asyncs, asynccnt); 2032 array_verify (EV_A_ (W *)asyncs, asynccnt);
1590#endif 2033#endif
1591 2034
2035#if EV_PREPARE_ENABLE
1592 assert (preparemax >= preparecnt); 2036 assert (preparemax >= preparecnt);
1593 array_verify (EV_A_ (W *)prepares, preparecnt); 2037 array_verify (EV_A_ (W *)prepares, preparecnt);
2038#endif
1594 2039
2040#if EV_CHECK_ENABLE
1595 assert (checkmax >= checkcnt); 2041 assert (checkmax >= checkcnt);
1596 array_verify (EV_A_ (W *)checks, checkcnt); 2042 array_verify (EV_A_ (W *)checks, checkcnt);
2043#endif
1597 2044
1598# if 0 2045# if 0
2046#if EV_CHILD_ENABLE
1599 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2047 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) 2048 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2049#endif
1601# endif 2050# endif
1602#endif 2051#endif
1603} 2052}
1604 2053#endif
1605#endif /* multiplicity */
1606 2054
1607#if EV_MULTIPLICITY 2055#if EV_MULTIPLICITY
1608struct ev_loop * 2056struct ev_loop *
1609ev_default_loop_init (unsigned int flags)
1610#else 2057#else
1611int 2058int
2059#endif
1612ev_default_loop (unsigned int flags) 2060ev_default_loop (unsigned int flags)
1613#endif
1614{ 2061{
1615 if (!ev_default_loop_ptr) 2062 if (!ev_default_loop_ptr)
1616 { 2063 {
1617#if EV_MULTIPLICITY 2064#if EV_MULTIPLICITY
1618 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2065 EV_P = ev_default_loop_ptr = &default_loop_struct;
1619#else 2066#else
1620 ev_default_loop_ptr = 1; 2067 ev_default_loop_ptr = 1;
1621#endif 2068#endif
1622 2069
1623 loop_init (EV_A_ flags); 2070 loop_init (EV_A_ flags);
1624 2071
1625 if (ev_backend (EV_A)) 2072 if (ev_backend (EV_A))
1626 { 2073 {
1627#ifndef _WIN32 2074#if EV_CHILD_ENABLE
1628 ev_signal_init (&childev, childcb, SIGCHLD); 2075 ev_signal_init (&childev, childcb, SIGCHLD);
1629 ev_set_priority (&childev, EV_MAXPRI); 2076 ev_set_priority (&childev, EV_MAXPRI);
1630 ev_signal_start (EV_A_ &childev); 2077 ev_signal_start (EV_A_ &childev);
1631 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2078 ev_unref (EV_A); /* child watcher should not keep loop alive */
1632#endif 2079#endif
… …
1637 2084
1638 return ev_default_loop_ptr; 2085 return ev_default_loop_ptr;
1639} 2086}
1640 2087
1641void 2088void
1642ev_default_destroy (void) 2089ev_loop_fork (EV_P)
1643{ 2090{
1644#if EV_MULTIPLICITY
1645 struct ev_loop *loop = ev_default_loop_ptr;
1646#endif
1647
1648 ev_default_loop_ptr = 0;
1649
1650#ifndef _WIN32
1651 ev_ref (EV_A); /* child watcher */
1652 ev_signal_stop (EV_A_ &childev);
1653#endif
1654
1655 loop_destroy (EV_A);
1656}
1657
1658void
1659ev_default_fork (void)
1660{
1661#if EV_MULTIPLICITY
1662 struct ev_loop *loop = ev_default_loop_ptr;
1663#endif
1664
1665 postfork = 1; /* must be in line with ev_loop_fork */ 2091 postfork = 1; /* must be in line with ev_default_fork */
1666} 2092}
1667 2093
1668/*****************************************************************************/ 2094/*****************************************************************************/
1669 2095
1670void 2096void
1671ev_invoke (EV_P_ void *w, int revents) 2097ev_invoke (EV_P_ void *w, int revents)
1672{ 2098{
1673 EV_CB_INVOKE ((W)w, revents); 2099 EV_CB_INVOKE ((W)w, revents);
1674} 2100}
1675 2101
1676void inline_speed 2102unsigned int
1677call_pending (EV_P) 2103ev_pending_count (EV_P)
2104{
2105 int pri;
2106 unsigned int count = 0;
2107
2108 for (pri = NUMPRI; pri--; )
2109 count += pendingcnt [pri];
2110
2111 return count;
2112}
2113
2114void noinline
2115ev_invoke_pending (EV_P)
1678{ 2116{
1679 int pri; 2117 int pri;
1680 2118
1681 for (pri = NUMPRI; pri--; ) 2119 for (pri = NUMPRI; pri--; )
1682 while (pendingcnt [pri]) 2120 while (pendingcnt [pri])
1683 { 2121 {
1684 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2122 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1685 2123
1686 if (expect_true (p->w))
1687 {
1688 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1689
1690 p->w->pending = 0; 2124 p->w->pending = 0;
1691 EV_CB_INVOKE (p->w, p->events); 2125 EV_CB_INVOKE (p->w, p->events);
1692 EV_FREQUENT_CHECK; 2126 EV_FREQUENT_CHECK;
1693 }
1694 } 2127 }
1695} 2128}
1696 2129
1697#if EV_IDLE_ENABLE 2130#if EV_IDLE_ENABLE
1698void inline_size 2131/* make idle watchers pending. this handles the "call-idle */
2132/* only when higher priorities are idle" logic */
2133inline_size void
1699idle_reify (EV_P) 2134idle_reify (EV_P)
1700{ 2135{
1701 if (expect_false (idleall)) 2136 if (expect_false (idleall))
1702 { 2137 {
1703 int pri; 2138 int pri;
… …
1715 } 2150 }
1716 } 2151 }
1717} 2152}
1718#endif 2153#endif
1719 2154
1720void inline_size 2155/* make timers pending */
2156inline_size void
1721timers_reify (EV_P) 2157timers_reify (EV_P)
1722{ 2158{
1723 EV_FREQUENT_CHECK; 2159 EV_FREQUENT_CHECK;
1724 2160
1725 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2161 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1726 { 2162 {
1727 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2163 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 { 2164 {
2165 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2166
2167 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2168
2169 /* first reschedule or stop timer */
2170 if (w->repeat)
2171 {
1734 ev_at (w) += w->repeat; 2172 ev_at (w) += w->repeat;
1735 if (ev_at (w) < mn_now) 2173 if (ev_at (w) < mn_now)
1736 ev_at (w) = mn_now; 2174 ev_at (w) = mn_now;
1737 2175
1738 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2176 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1739 2177
1740 ANHE_at_cache (timers [HEAP0]); 2178 ANHE_at_cache (timers [HEAP0]);
1741 downheap (timers, timercnt, HEAP0); 2179 downheap (timers, timercnt, HEAP0);
2180 }
2181 else
2182 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2183
2184 EV_FREQUENT_CHECK;
2185 feed_reverse (EV_A_ (W)w);
1742 } 2186 }
1743 else 2187 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1744 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1745 2188
1746 EV_FREQUENT_CHECK; 2189 feed_reverse_done (EV_A_ EV_TIMER);
1747 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1748 } 2190 }
1749} 2191}
1750 2192
1751#if EV_PERIODIC_ENABLE 2193#if EV_PERIODIC_ENABLE
1752void inline_size 2194/* make periodics pending */
2195inline_size void
1753periodics_reify (EV_P) 2196periodics_reify (EV_P)
1754{ 2197{
1755 EV_FREQUENT_CHECK; 2198 EV_FREQUENT_CHECK;
1756 2199
1757 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2200 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1758 { 2201 {
1759 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2202 int feed_count = 0;
1760 2203
1761 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2204 do
1762
1763 /* first reschedule or stop timer */
1764 if (w->reschedule_cb)
1765 { 2205 {
2206 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2207
2208 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2209
2210 /* first reschedule or stop timer */
2211 if (w->reschedule_cb)
2212 {
1766 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2213 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1767 2214
1768 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2215 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1769 2216
1770 ANHE_at_cache (periodics [HEAP0]); 2217 ANHE_at_cache (periodics [HEAP0]);
1771 downheap (periodics, periodiccnt, HEAP0); 2218 downheap (periodics, periodiccnt, HEAP0);
2219 }
2220 else if (w->interval)
2221 {
2222 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2223 /* if next trigger time is not sufficiently in the future, put it there */
2224 /* this might happen because of floating point inexactness */
2225 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2226 {
2227 ev_at (w) += w->interval;
2228
2229 /* if interval is unreasonably low we might still have a time in the past */
2230 /* so correct this. this will make the periodic very inexact, but the user */
2231 /* has effectively asked to get triggered more often than possible */
2232 if (ev_at (w) < ev_rt_now)
2233 ev_at (w) = ev_rt_now;
2234 }
2235
2236 ANHE_at_cache (periodics [HEAP0]);
2237 downheap (periodics, periodiccnt, HEAP0);
2238 }
2239 else
2240 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2241
2242 EV_FREQUENT_CHECK;
2243 feed_reverse (EV_A_ (W)w);
1772 } 2244 }
1773 else if (w->interval) 2245 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 2246
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); 2247 feed_reverse_done (EV_A_ EV_PERIODIC);
1797 } 2248 }
1798} 2249}
1799 2250
2251/* simply recalculate all periodics */
2252/* TODO: maybe ensure that at least one event happens when jumping forward? */
1800static void noinline 2253static void noinline
1801periodics_reschedule (EV_P) 2254periodics_reschedule (EV_P)
1802{ 2255{
1803 int i; 2256 int i;
1804 2257
… …
1817 2270
1818 reheap (periodics, periodiccnt); 2271 reheap (periodics, periodiccnt);
1819} 2272}
1820#endif 2273#endif
1821 2274
1822void inline_speed 2275/* adjust all timers by a given offset */
2276static void noinline
2277timers_reschedule (EV_P_ ev_tstamp adjust)
2278{
2279 int i;
2280
2281 for (i = 0; i < timercnt; ++i)
2282 {
2283 ANHE *he = timers + i + HEAP0;
2284 ANHE_w (*he)->at += adjust;
2285 ANHE_at_cache (*he);
2286 }
2287}
2288
2289/* fetch new monotonic and realtime times from the kernel */
2290/* also detect if there was a timejump, and act accordingly */
2291inline_speed void
1823time_update (EV_P_ ev_tstamp max_block) 2292time_update (EV_P_ ev_tstamp max_block)
1824{ 2293{
1825 int i;
1826
1827#if EV_USE_MONOTONIC 2294#if EV_USE_MONOTONIC
1828 if (expect_true (have_monotonic)) 2295 if (expect_true (have_monotonic))
1829 { 2296 {
2297 int i;
1830 ev_tstamp odiff = rtmn_diff; 2298 ev_tstamp odiff = rtmn_diff;
1831 2299
1832 mn_now = get_clock (); 2300 mn_now = get_clock ();
1833 2301
1834 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2302 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1860 ev_rt_now = ev_time (); 2328 ev_rt_now = ev_time ();
1861 mn_now = get_clock (); 2329 mn_now = get_clock ();
1862 now_floor = mn_now; 2330 now_floor = mn_now;
1863 } 2331 }
1864 2332
2333 /* no timer adjustment, as the monotonic clock doesn't jump */
2334 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865# if EV_PERIODIC_ENABLE 2335# if EV_PERIODIC_ENABLE
1866 periodics_reschedule (EV_A); 2336 periodics_reschedule (EV_A);
1867# endif 2337# endif
1868 /* no timer adjustment, as the monotonic clock doesn't jump */
1869 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870 } 2338 }
1871 else 2339 else
1872#endif 2340#endif
1873 { 2341 {
1874 ev_rt_now = ev_time (); 2342 ev_rt_now = ev_time ();
1875 2343
1876 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2344 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1877 { 2345 {
2346 /* adjust timers. this is easy, as the offset is the same for all of them */
2347 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1878#if EV_PERIODIC_ENABLE 2348#if EV_PERIODIC_ENABLE
1879 periodics_reschedule (EV_A); 2349 periodics_reschedule (EV_A);
1880#endif 2350#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 } 2351 }
1889 2352
1890 mn_now = ev_rt_now; 2353 mn_now = ev_rt_now;
1891 } 2354 }
1892} 2355}
1893 2356
1894void 2357void
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) 2358ev_run (EV_P_ int flags)
1916{ 2359{
2360#if EV_FEATURE_API
2361 ++loop_depth;
2362#endif
2363
2364 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2365
1917 loop_done = EVUNLOOP_CANCEL; 2366 loop_done = EVBREAK_CANCEL;
1918 2367
1919 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2368 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1920 2369
1921 do 2370 do
1922 { 2371 {
1923#if EV_VERIFY >= 2 2372#if EV_VERIFY >= 2
1924 ev_loop_verify (EV_A); 2373 ev_verify (EV_A);
1925#endif 2374#endif
1926 2375
1927#ifndef _WIN32 2376#ifndef _WIN32
1928 if (expect_false (curpid)) /* penalise the forking check even more */ 2377 if (expect_false (curpid)) /* penalise the forking check even more */
1929 if (expect_false (getpid () != curpid)) 2378 if (expect_false (getpid () != curpid))
… …
1937 /* we might have forked, so queue fork handlers */ 2386 /* we might have forked, so queue fork handlers */
1938 if (expect_false (postfork)) 2387 if (expect_false (postfork))
1939 if (forkcnt) 2388 if (forkcnt)
1940 { 2389 {
1941 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2390 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1942 call_pending (EV_A); 2391 EV_INVOKE_PENDING;
1943 } 2392 }
1944#endif 2393#endif
1945 2394
2395#if EV_PREPARE_ENABLE
1946 /* queue prepare watchers (and execute them) */ 2396 /* queue prepare watchers (and execute them) */
1947 if (expect_false (preparecnt)) 2397 if (expect_false (preparecnt))
1948 { 2398 {
1949 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2399 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1950 call_pending (EV_A); 2400 EV_INVOKE_PENDING;
1951 } 2401 }
2402#endif
1952 2403
1953 if (expect_false (!activecnt)) 2404 if (expect_false (loop_done))
1954 break; 2405 break;
1955 2406
1956 /* we might have forked, so reify kernel state if necessary */ 2407 /* we might have forked, so reify kernel state if necessary */
1957 if (expect_false (postfork)) 2408 if (expect_false (postfork))
1958 loop_fork (EV_A); 2409 loop_fork (EV_A);
… …
1963 /* calculate blocking time */ 2414 /* calculate blocking time */
1964 { 2415 {
1965 ev_tstamp waittime = 0.; 2416 ev_tstamp waittime = 0.;
1966 ev_tstamp sleeptime = 0.; 2417 ev_tstamp sleeptime = 0.;
1967 2418
2419 /* remember old timestamp for io_blocktime calculation */
2420 ev_tstamp prev_mn_now = mn_now;
2421
2422 /* update time to cancel out callback processing overhead */
2423 time_update (EV_A_ 1e100);
2424
1968 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2425 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1969 { 2426 {
1970 /* update time to cancel out callback processing overhead */
1971 time_update (EV_A_ 1e100);
1972
1973 waittime = MAX_BLOCKTIME; 2427 waittime = MAX_BLOCKTIME;
1974 2428
1975 if (timercnt) 2429 if (timercnt)
1976 { 2430 {
1977 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2431 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1984 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2438 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1985 if (waittime > to) waittime = to; 2439 if (waittime > to) waittime = to;
1986 } 2440 }
1987#endif 2441#endif
1988 2442
2443 /* don't let timeouts decrease the waittime below timeout_blocktime */
1989 if (expect_false (waittime < timeout_blocktime)) 2444 if (expect_false (waittime < timeout_blocktime))
1990 waittime = timeout_blocktime; 2445 waittime = timeout_blocktime;
1991 2446
1992 sleeptime = waittime - backend_fudge; 2447 /* extra check because io_blocktime is commonly 0 */
1993
1994 if (expect_true (sleeptime > io_blocktime)) 2448 if (expect_false (io_blocktime))
1995 sleeptime = io_blocktime;
1996
1997 if (sleeptime)
1998 { 2449 {
2450 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2451
2452 if (sleeptime > waittime - backend_fudge)
2453 sleeptime = waittime - backend_fudge;
2454
2455 if (expect_true (sleeptime > 0.))
2456 {
1999 ev_sleep (sleeptime); 2457 ev_sleep (sleeptime);
2000 waittime -= sleeptime; 2458 waittime -= sleeptime;
2459 }
2001 } 2460 }
2002 } 2461 }
2003 2462
2463#if EV_FEATURE_API
2004 ++loop_count; 2464 ++loop_count;
2465#endif
2466 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2005 backend_poll (EV_A_ waittime); 2467 backend_poll (EV_A_ waittime);
2468 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2006 2469
2007 /* update ev_rt_now, do magic */ 2470 /* update ev_rt_now, do magic */
2008 time_update (EV_A_ waittime + sleeptime); 2471 time_update (EV_A_ waittime + sleeptime);
2009 } 2472 }
2010 2473
… …
2017#if EV_IDLE_ENABLE 2480#if EV_IDLE_ENABLE
2018 /* queue idle watchers unless other events are pending */ 2481 /* queue idle watchers unless other events are pending */
2019 idle_reify (EV_A); 2482 idle_reify (EV_A);
2020#endif 2483#endif
2021 2484
2485#if EV_CHECK_ENABLE
2022 /* queue check watchers, to be executed first */ 2486 /* queue check watchers, to be executed first */
2023 if (expect_false (checkcnt)) 2487 if (expect_false (checkcnt))
2024 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2488 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2489#endif
2025 2490
2026 call_pending (EV_A); 2491 EV_INVOKE_PENDING;
2027 } 2492 }
2028 while (expect_true ( 2493 while (expect_true (
2029 activecnt 2494 activecnt
2030 && !loop_done 2495 && !loop_done
2031 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2496 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2032 )); 2497 ));
2033 2498
2034 if (loop_done == EVUNLOOP_ONE) 2499 if (loop_done == EVBREAK_ONE)
2035 loop_done = EVUNLOOP_CANCEL; 2500 loop_done = EVBREAK_CANCEL;
2036}
2037 2501
2502#if EV_FEATURE_API
2503 --loop_depth;
2504#endif
2505}
2506
2038void 2507void
2039ev_unloop (EV_P_ int how) 2508ev_break (EV_P_ int how)
2040{ 2509{
2041 loop_done = how; 2510 loop_done = how;
2042} 2511}
2043 2512
2513void
2514ev_ref (EV_P)
2515{
2516 ++activecnt;
2517}
2518
2519void
2520ev_unref (EV_P)
2521{
2522 --activecnt;
2523}
2524
2525void
2526ev_now_update (EV_P)
2527{
2528 time_update (EV_A_ 1e100);
2529}
2530
2531void
2532ev_suspend (EV_P)
2533{
2534 ev_now_update (EV_A);
2535}
2536
2537void
2538ev_resume (EV_P)
2539{
2540 ev_tstamp mn_prev = mn_now;
2541
2542 ev_now_update (EV_A);
2543 timers_reschedule (EV_A_ mn_now - mn_prev);
2544#if EV_PERIODIC_ENABLE
2545 /* TODO: really do this? */
2546 periodics_reschedule (EV_A);
2547#endif
2548}
2549
2044/*****************************************************************************/ 2550/*****************************************************************************/
2551/* singly-linked list management, used when the expected list length is short */
2045 2552
2046void inline_size 2553inline_size void
2047wlist_add (WL *head, WL elem) 2554wlist_add (WL *head, WL elem)
2048{ 2555{
2049 elem->next = *head; 2556 elem->next = *head;
2050 *head = elem; 2557 *head = elem;
2051} 2558}
2052 2559
2053void inline_size 2560inline_size void
2054wlist_del (WL *head, WL elem) 2561wlist_del (WL *head, WL elem)
2055{ 2562{
2056 while (*head) 2563 while (*head)
2057 { 2564 {
2058 if (*head == elem) 2565 if (expect_true (*head == elem))
2059 { 2566 {
2060 *head = elem->next; 2567 *head = elem->next;
2061 return; 2568 break;
2062 } 2569 }
2063 2570
2064 head = &(*head)->next; 2571 head = &(*head)->next;
2065 } 2572 }
2066} 2573}
2067 2574
2068void inline_speed 2575/* internal, faster, version of ev_clear_pending */
2576inline_speed void
2069clear_pending (EV_P_ W w) 2577clear_pending (EV_P_ W w)
2070{ 2578{
2071 if (w->pending) 2579 if (w->pending)
2072 { 2580 {
2073 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2581 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2074 w->pending = 0; 2582 w->pending = 0;
2075 } 2583 }
2076} 2584}
2077 2585
2078int 2586int
… …
2082 int pending = w_->pending; 2590 int pending = w_->pending;
2083 2591
2084 if (expect_true (pending)) 2592 if (expect_true (pending))
2085 { 2593 {
2086 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2594 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2595 p->w = (W)&pending_w;
2087 w_->pending = 0; 2596 w_->pending = 0;
2088 p->w = 0;
2089 return p->events; 2597 return p->events;
2090 } 2598 }
2091 else 2599 else
2092 return 0; 2600 return 0;
2093} 2601}
2094 2602
2095void inline_size 2603inline_size void
2096pri_adjust (EV_P_ W w) 2604pri_adjust (EV_P_ W w)
2097{ 2605{
2098 int pri = w->priority; 2606 int pri = ev_priority (w);
2099 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2607 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2100 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2608 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2101 w->priority = pri; 2609 ev_set_priority (w, pri);
2102} 2610}
2103 2611
2104void inline_speed 2612inline_speed void
2105ev_start (EV_P_ W w, int active) 2613ev_start (EV_P_ W w, int active)
2106{ 2614{
2107 pri_adjust (EV_A_ w); 2615 pri_adjust (EV_A_ w);
2108 w->active = active; 2616 w->active = active;
2109 ev_ref (EV_A); 2617 ev_ref (EV_A);
2110} 2618}
2111 2619
2112void inline_size 2620inline_size void
2113ev_stop (EV_P_ W w) 2621ev_stop (EV_P_ W w)
2114{ 2622{
2115 ev_unref (EV_A); 2623 ev_unref (EV_A);
2116 w->active = 0; 2624 w->active = 0;
2117} 2625}
… …
2124 int fd = w->fd; 2632 int fd = w->fd;
2125 2633
2126 if (expect_false (ev_is_active (w))) 2634 if (expect_false (ev_is_active (w)))
2127 return; 2635 return;
2128 2636
2129 assert (("ev_io_start called with negative fd", fd >= 0)); 2637 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)))); 2638 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2131 2639
2132 EV_FREQUENT_CHECK; 2640 EV_FREQUENT_CHECK;
2133 2641
2134 ev_start (EV_A_ (W)w, 1); 2642 ev_start (EV_A_ (W)w, 1);
2135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2643 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2136 wlist_add (&anfds[fd].head, (WL)w); 2644 wlist_add (&anfds[fd].head, (WL)w);
2137 2645
2138 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2646 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2139 w->events &= ~EV_IOFDSET; 2647 w->events &= ~EV__IOFDSET;
2140 2648
2141 EV_FREQUENT_CHECK; 2649 EV_FREQUENT_CHECK;
2142} 2650}
2143 2651
2144void noinline 2652void noinline
… …
2146{ 2654{
2147 clear_pending (EV_A_ (W)w); 2655 clear_pending (EV_A_ (W)w);
2148 if (expect_false (!ev_is_active (w))) 2656 if (expect_false (!ev_is_active (w)))
2149 return; 2657 return;
2150 2658
2151 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2659 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2152 2660
2153 EV_FREQUENT_CHECK; 2661 EV_FREQUENT_CHECK;
2154 2662
2155 wlist_del (&anfds[w->fd].head, (WL)w); 2663 wlist_del (&anfds[w->fd].head, (WL)w);
2156 ev_stop (EV_A_ (W)w); 2664 ev_stop (EV_A_ (W)w);
2157 2665
2158 fd_change (EV_A_ w->fd, 1); 2666 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2159 2667
2160 EV_FREQUENT_CHECK; 2668 EV_FREQUENT_CHECK;
2161} 2669}
2162 2670
2163void noinline 2671void noinline
… …
2166 if (expect_false (ev_is_active (w))) 2674 if (expect_false (ev_is_active (w)))
2167 return; 2675 return;
2168 2676
2169 ev_at (w) += mn_now; 2677 ev_at (w) += mn_now;
2170 2678
2171 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2679 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2172 2680
2173 EV_FREQUENT_CHECK; 2681 EV_FREQUENT_CHECK;
2174 2682
2175 ++timercnt; 2683 ++timercnt;
2176 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2684 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2179 ANHE_at_cache (timers [ev_active (w)]); 2687 ANHE_at_cache (timers [ev_active (w)]);
2180 upheap (timers, ev_active (w)); 2688 upheap (timers, ev_active (w));
2181 2689
2182 EV_FREQUENT_CHECK; 2690 EV_FREQUENT_CHECK;
2183 2691
2184 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2692 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2185} 2693}
2186 2694
2187void noinline 2695void noinline
2188ev_timer_stop (EV_P_ ev_timer *w) 2696ev_timer_stop (EV_P_ ev_timer *w)
2189{ 2697{
… …
2194 EV_FREQUENT_CHECK; 2702 EV_FREQUENT_CHECK;
2195 2703
2196 { 2704 {
2197 int active = ev_active (w); 2705 int active = ev_active (w);
2198 2706
2199 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2707 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2200 2708
2201 --timercnt; 2709 --timercnt;
2202 2710
2203 if (expect_true (active < timercnt + HEAP0)) 2711 if (expect_true (active < timercnt + HEAP0))
2204 { 2712 {
2205 timers [active] = timers [timercnt + HEAP0]; 2713 timers [active] = timers [timercnt + HEAP0];
2206 adjustheap (timers, timercnt, active); 2714 adjustheap (timers, timercnt, active);
2207 } 2715 }
2208 } 2716 }
2209 2717
2210 EV_FREQUENT_CHECK;
2211
2212 ev_at (w) -= mn_now; 2718 ev_at (w) -= mn_now;
2213 2719
2214 ev_stop (EV_A_ (W)w); 2720 ev_stop (EV_A_ (W)w);
2721
2722 EV_FREQUENT_CHECK;
2215} 2723}
2216 2724
2217void noinline 2725void noinline
2218ev_timer_again (EV_P_ ev_timer *w) 2726ev_timer_again (EV_P_ ev_timer *w)
2219{ 2727{
… …
2237 } 2745 }
2238 2746
2239 EV_FREQUENT_CHECK; 2747 EV_FREQUENT_CHECK;
2240} 2748}
2241 2749
2750ev_tstamp
2751ev_timer_remaining (EV_P_ ev_timer *w)
2752{
2753 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2754}
2755
2242#if EV_PERIODIC_ENABLE 2756#if EV_PERIODIC_ENABLE
2243void noinline 2757void noinline
2244ev_periodic_start (EV_P_ ev_periodic *w) 2758ev_periodic_start (EV_P_ ev_periodic *w)
2245{ 2759{
2246 if (expect_false (ev_is_active (w))) 2760 if (expect_false (ev_is_active (w)))
… …
2248 2762
2249 if (w->reschedule_cb) 2763 if (w->reschedule_cb)
2250 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2764 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251 else if (w->interval) 2765 else if (w->interval)
2252 { 2766 {
2253 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2767 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 */ 2768 /* 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; 2769 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2256 } 2770 }
2257 else 2771 else
2258 ev_at (w) = w->offset; 2772 ev_at (w) = w->offset;
… …
2266 ANHE_at_cache (periodics [ev_active (w)]); 2780 ANHE_at_cache (periodics [ev_active (w)]);
2267 upheap (periodics, ev_active (w)); 2781 upheap (periodics, ev_active (w));
2268 2782
2269 EV_FREQUENT_CHECK; 2783 EV_FREQUENT_CHECK;
2270 2784
2271 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2785 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2272} 2786}
2273 2787
2274void noinline 2788void noinline
2275ev_periodic_stop (EV_P_ ev_periodic *w) 2789ev_periodic_stop (EV_P_ ev_periodic *w)
2276{ 2790{
… …
2281 EV_FREQUENT_CHECK; 2795 EV_FREQUENT_CHECK;
2282 2796
2283 { 2797 {
2284 int active = ev_active (w); 2798 int active = ev_active (w);
2285 2799
2286 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2800 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2287 2801
2288 --periodiccnt; 2802 --periodiccnt;
2289 2803
2290 if (expect_true (active < periodiccnt + HEAP0)) 2804 if (expect_true (active < periodiccnt + HEAP0))
2291 { 2805 {
2292 periodics [active] = periodics [periodiccnt + HEAP0]; 2806 periodics [active] = periodics [periodiccnt + HEAP0];
2293 adjustheap (periodics, periodiccnt, active); 2807 adjustheap (periodics, periodiccnt, active);
2294 } 2808 }
2295 } 2809 }
2296 2810
2297 EV_FREQUENT_CHECK;
2298
2299 ev_stop (EV_A_ (W)w); 2811 ev_stop (EV_A_ (W)w);
2812
2813 EV_FREQUENT_CHECK;
2300} 2814}
2301 2815
2302void noinline 2816void noinline
2303ev_periodic_again (EV_P_ ev_periodic *w) 2817ev_periodic_again (EV_P_ ev_periodic *w)
2304{ 2818{
… …
2310 2824
2311#ifndef SA_RESTART 2825#ifndef SA_RESTART
2312# define SA_RESTART 0 2826# define SA_RESTART 0
2313#endif 2827#endif
2314 2828
2829#if EV_SIGNAL_ENABLE
2830
2315void noinline 2831void noinline
2316ev_signal_start (EV_P_ ev_signal *w) 2832ev_signal_start (EV_P_ ev_signal *w)
2317{ 2833{
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))) 2834 if (expect_false (ev_is_active (w)))
2322 return; 2835 return;
2323 2836
2324 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2837 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2325 2838
2326 evpipe_init (EV_A); 2839#if EV_MULTIPLICITY
2840 assert (("libev: a signal must not be attached to two different loops",
2841 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2327 2842
2328 EV_FREQUENT_CHECK; 2843 signals [w->signum - 1].loop = EV_A;
2844#endif
2329 2845
2846 EV_FREQUENT_CHECK;
2847
2848#if EV_USE_SIGNALFD
2849 if (sigfd == -2)
2330 { 2850 {
2331#ifndef _WIN32 2851 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2332 sigset_t full, prev; 2852 if (sigfd < 0 && errno == EINVAL)
2333 sigfillset (&full); 2853 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2334 sigprocmask (SIG_SETMASK, &full, &prev);
2335#endif
2336 2854
2337 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2855 if (sigfd >= 0)
2856 {
2857 fd_intern (sigfd); /* doing it twice will not hurt */
2338 2858
2339#ifndef _WIN32 2859 sigemptyset (&sigfd_set);
2340 sigprocmask (SIG_SETMASK, &prev, 0); 2860
2341#endif 2861 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2862 ev_set_priority (&sigfd_w, EV_MAXPRI);
2863 ev_io_start (EV_A_ &sigfd_w);
2864 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2865 }
2342 } 2866 }
2867
2868 if (sigfd >= 0)
2869 {
2870 /* TODO: check .head */
2871 sigaddset (&sigfd_set, w->signum);
2872 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2873
2874 signalfd (sigfd, &sigfd_set, 0);
2875 }
2876#endif
2343 2877
2344 ev_start (EV_A_ (W)w, 1); 2878 ev_start (EV_A_ (W)w, 1);
2345 wlist_add (&signals [w->signum - 1].head, (WL)w); 2879 wlist_add (&signals [w->signum - 1].head, (WL)w);
2346 2880
2347 if (!((WL)w)->next) 2881 if (!((WL)w)->next)
2882# if EV_USE_SIGNALFD
2883 if (sigfd < 0) /*TODO*/
2884# endif
2348 { 2885 {
2349#if _WIN32 2886# ifdef _WIN32
2887 evpipe_init (EV_A);
2888
2350 signal (w->signum, ev_sighandler); 2889 signal (w->signum, ev_sighandler);
2351#else 2890# else
2352 struct sigaction sa; 2891 struct sigaction sa;
2892
2893 evpipe_init (EV_A);
2894
2353 sa.sa_handler = ev_sighandler; 2895 sa.sa_handler = ev_sighandler;
2354 sigfillset (&sa.sa_mask); 2896 sigfillset (&sa.sa_mask);
2355 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2897 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2356 sigaction (w->signum, &sa, 0); 2898 sigaction (w->signum, &sa, 0);
2899
2900 if (origflags & EVFLAG_NOSIGMASK)
2901 {
2902 sigemptyset (&sa.sa_mask);
2903 sigaddset (&sa.sa_mask, w->signum);
2904 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2905 }
2357#endif 2906#endif
2358 } 2907 }
2359 2908
2360 EV_FREQUENT_CHECK; 2909 EV_FREQUENT_CHECK;
2361} 2910}
2362 2911
2363void noinline 2912void noinline
… …
2371 2920
2372 wlist_del (&signals [w->signum - 1].head, (WL)w); 2921 wlist_del (&signals [w->signum - 1].head, (WL)w);
2373 ev_stop (EV_A_ (W)w); 2922 ev_stop (EV_A_ (W)w);
2374 2923
2375 if (!signals [w->signum - 1].head) 2924 if (!signals [w->signum - 1].head)
2925 {
2926#if EV_MULTIPLICITY
2927 signals [w->signum - 1].loop = 0; /* unattach from signal */
2928#endif
2929#if EV_USE_SIGNALFD
2930 if (sigfd >= 0)
2931 {
2932 sigset_t ss;
2933
2934 sigemptyset (&ss);
2935 sigaddset (&ss, w->signum);
2936 sigdelset (&sigfd_set, w->signum);
2937
2938 signalfd (sigfd, &sigfd_set, 0);
2939 sigprocmask (SIG_UNBLOCK, &ss, 0);
2940 }
2941 else
2942#endif
2376 signal (w->signum, SIG_DFL); 2943 signal (w->signum, SIG_DFL);
2944 }
2377 2945
2378 EV_FREQUENT_CHECK; 2946 EV_FREQUENT_CHECK;
2379} 2947}
2948
2949#endif
2950
2951#if EV_CHILD_ENABLE
2380 2952
2381void 2953void
2382ev_child_start (EV_P_ ev_child *w) 2954ev_child_start (EV_P_ ev_child *w)
2383{ 2955{
2384#if EV_MULTIPLICITY 2956#if EV_MULTIPLICITY
2385 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2957 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2386#endif 2958#endif
2387 if (expect_false (ev_is_active (w))) 2959 if (expect_false (ev_is_active (w)))
2388 return; 2960 return;
2389 2961
2390 EV_FREQUENT_CHECK; 2962 EV_FREQUENT_CHECK;
2391 2963
2392 ev_start (EV_A_ (W)w, 1); 2964 ev_start (EV_A_ (W)w, 1);
2393 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2965 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2394 2966
2395 EV_FREQUENT_CHECK; 2967 EV_FREQUENT_CHECK;
2396} 2968}
2397 2969
2398void 2970void
… …
2402 if (expect_false (!ev_is_active (w))) 2974 if (expect_false (!ev_is_active (w)))
2403 return; 2975 return;
2404 2976
2405 EV_FREQUENT_CHECK; 2977 EV_FREQUENT_CHECK;
2406 2978
2407 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2979 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2408 ev_stop (EV_A_ (W)w); 2980 ev_stop (EV_A_ (W)w);
2409 2981
2410 EV_FREQUENT_CHECK; 2982 EV_FREQUENT_CHECK;
2411} 2983}
2984
2985#endif
2412 2986
2413#if EV_STAT_ENABLE 2987#if EV_STAT_ENABLE
2414 2988
2415# ifdef _WIN32 2989# ifdef _WIN32
2416# undef lstat 2990# undef lstat
… …
2422#define MIN_STAT_INTERVAL 0.1074891 2996#define MIN_STAT_INTERVAL 0.1074891
2423 2997
2424static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2998static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2425 2999
2426#if EV_USE_INOTIFY 3000#if EV_USE_INOTIFY
2427# define EV_INOTIFY_BUFSIZE 8192 3001
3002/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3003# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2428 3004
2429static void noinline 3005static void noinline
2430infy_add (EV_P_ ev_stat *w) 3006infy_add (EV_P_ ev_stat *w)
2431{ 3007{
2432 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); 3008 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);
2433 3009
2434 if (w->wd < 0) 3010 if (w->wd >= 0)
3011 {
3012 struct statfs sfs;
3013
3014 /* now local changes will be tracked by inotify, but remote changes won't */
3015 /* unless the filesystem is known to be local, we therefore still poll */
3016 /* also do poll on <2.6.25, but with normal frequency */
3017
3018 if (!fs_2625)
3019 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3020 else if (!statfs (w->path, &sfs)
3021 && (sfs.f_type == 0x1373 /* devfs */
3022 || sfs.f_type == 0xEF53 /* ext2/3 */
3023 || sfs.f_type == 0x3153464a /* jfs */
3024 || sfs.f_type == 0x52654973 /* reiser3 */
3025 || sfs.f_type == 0x01021994 /* tempfs */
3026 || sfs.f_type == 0x58465342 /* xfs */))
3027 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3028 else
3029 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2435 { 3030 }
3031 else
3032 {
3033 /* can't use inotify, continue to stat */
2436 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3034 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2437 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2438 3035
2439 /* monitor some parent directory for speedup hints */ 3036 /* if path is not there, monitor some parent directory for speedup hints */
2440 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3037 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2441 /* but an efficiency issue only */ 3038 /* but an efficiency issue only */
2442 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3039 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2443 { 3040 {
2444 char path [4096]; 3041 char path [4096];
… …
2449 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3046 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2450 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3047 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2451 3048
2452 char *pend = strrchr (path, '/'); 3049 char *pend = strrchr (path, '/');
2453 3050
2454 if (!pend) 3051 if (!pend || pend == path)
2455 break; /* whoops, no '/', complain to your admin */ 3052 break;
2456 3053
2457 *pend = 0; 3054 *pend = 0;
2458 w->wd = inotify_add_watch (fs_fd, path, mask); 3055 w->wd = inotify_add_watch (fs_fd, path, mask);
2459 } 3056 }
2460 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3057 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2461 } 3058 }
2462 } 3059 }
2463 else 3060
2464 { 3061 if (w->wd >= 0)
2465 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3062 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2466 3063
2467 /* now local changes will be tracked by inotify, but remote changes won't */ 3064 /* now re-arm timer, if required */
2468 /* unless the filesystem it known to be local, we therefore still poll */ 3065 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2469 /* also do poll on <2.6.25, but with normal frequency */
2470 struct statfs sfs;
2471
2472 if (fs_2625 && !statfs (w->path, &sfs))
2473 if (sfs.f_type == 0x1373 /* devfs */
2474 || sfs.f_type == 0xEF53 /* ext2/3 */
2475 || sfs.f_type == 0x3153464a /* jfs */
2476 || sfs.f_type == 0x52654973 /* reiser3 */
2477 || sfs.f_type == 0x01021994 /* tempfs */
2478 || sfs.f_type == 0x58465342 /* xfs */)
2479 return;
2480
2481 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2482 ev_timer_again (EV_A_ &w->timer); 3066 ev_timer_again (EV_A_ &w->timer);
2483 } 3067 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2484} 3068}
2485 3069
2486static void noinline 3070static void noinline
2487infy_del (EV_P_ ev_stat *w) 3071infy_del (EV_P_ ev_stat *w)
2488{ 3072{
… …
2491 3075
2492 if (wd < 0) 3076 if (wd < 0)
2493 return; 3077 return;
2494 3078
2495 w->wd = -2; 3079 w->wd = -2;
2496 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3080 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2497 wlist_del (&fs_hash [slot].head, (WL)w); 3081 wlist_del (&fs_hash [slot].head, (WL)w);
2498 3082
2499 /* remove this watcher, if others are watching it, they will rearm */ 3083 /* remove this watcher, if others are watching it, they will rearm */
2500 inotify_rm_watch (fs_fd, wd); 3084 inotify_rm_watch (fs_fd, wd);
2501} 3085}
… …
2503static void noinline 3087static void noinline
2504infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3088infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2505{ 3089{
2506 if (slot < 0) 3090 if (slot < 0)
2507 /* overflow, need to check for all hash slots */ 3091 /* overflow, need to check for all hash slots */
2508 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3092 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2509 infy_wd (EV_A_ slot, wd, ev); 3093 infy_wd (EV_A_ slot, wd, ev);
2510 else 3094 else
2511 { 3095 {
2512 WL w_; 3096 WL w_;
2513 3097
2514 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3098 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2515 { 3099 {
2516 ev_stat *w = (ev_stat *)w_; 3100 ev_stat *w = (ev_stat *)w_;
2517 w_ = w_->next; /* lets us remove this watcher and all before it */ 3101 w_ = w_->next; /* lets us remove this watcher and all before it */
2518 3102
2519 if (w->wd == wd || wd == -1) 3103 if (w->wd == wd || wd == -1)
2520 { 3104 {
2521 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3105 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2522 { 3106 {
3107 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2523 w->wd = -1; 3108 w->wd = -1;
2524 infy_add (EV_A_ w); /* re-add, no matter what */ 3109 infy_add (EV_A_ w); /* re-add, no matter what */
2525 } 3110 }
2526 3111
2527 stat_timer_cb (EV_A_ &w->timer, 0); 3112 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2532 3117
2533static void 3118static void
2534infy_cb (EV_P_ ev_io *w, int revents) 3119infy_cb (EV_P_ ev_io *w, int revents)
2535{ 3120{
2536 char buf [EV_INOTIFY_BUFSIZE]; 3121 char buf [EV_INOTIFY_BUFSIZE];
2537 struct inotify_event *ev = (struct inotify_event *)buf;
2538 int ofs; 3122 int ofs;
2539 int len = read (fs_fd, buf, sizeof (buf)); 3123 int len = read (fs_fd, buf, sizeof (buf));
2540 3124
2541 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3125 for (ofs = 0; ofs < len; )
3126 {
3127 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2542 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3128 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3129 ofs += sizeof (struct inotify_event) + ev->len;
3130 }
2543} 3131}
2544 3132
2545void inline_size 3133inline_size void
2546check_2625 (EV_P) 3134ev_check_2625 (EV_P)
2547{ 3135{
2548 /* kernels < 2.6.25 are borked 3136 /* kernels < 2.6.25 are borked
2549 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3137 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2550 */ 3138 */
2551 struct utsname buf; 3139 if (ev_linux_version () < 0x020619)
2552 int major, minor, micro;
2553
2554 if (uname (&buf))
2555 return; 3140 return;
2556 3141
2557 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2558 return;
2559
2560 if (major < 2
2561 || (major == 2 && minor < 6)
2562 || (major == 2 && minor == 6 && micro < 25))
2563 return;
2564
2565 fs_2625 = 1; 3142 fs_2625 = 1;
2566} 3143}
2567 3144
2568void inline_size 3145inline_size int
3146infy_newfd (void)
3147{
3148#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3149 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3150 if (fd >= 0)
3151 return fd;
3152#endif
3153 return inotify_init ();
3154}
3155
3156inline_size void
2569infy_init (EV_P) 3157infy_init (EV_P)
2570{ 3158{
2571 if (fs_fd != -2) 3159 if (fs_fd != -2)
2572 return; 3160 return;
2573 3161
2574 fs_fd = -1; 3162 fs_fd = -1;
2575 3163
2576 check_2625 (EV_A); 3164 ev_check_2625 (EV_A);
2577 3165
2578 fs_fd = inotify_init (); 3166 fs_fd = infy_newfd ();
2579 3167
2580 if (fs_fd >= 0) 3168 if (fs_fd >= 0)
2581 { 3169 {
3170 fd_intern (fs_fd);
2582 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3171 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2583 ev_set_priority (&fs_w, EV_MAXPRI); 3172 ev_set_priority (&fs_w, EV_MAXPRI);
2584 ev_io_start (EV_A_ &fs_w); 3173 ev_io_start (EV_A_ &fs_w);
3174 ev_unref (EV_A);
2585 } 3175 }
2586} 3176}
2587 3177
2588void inline_size 3178inline_size void
2589infy_fork (EV_P) 3179infy_fork (EV_P)
2590{ 3180{
2591 int slot; 3181 int slot;
2592 3182
2593 if (fs_fd < 0) 3183 if (fs_fd < 0)
2594 return; 3184 return;
2595 3185
3186 ev_ref (EV_A);
3187 ev_io_stop (EV_A_ &fs_w);
2596 close (fs_fd); 3188 close (fs_fd);
2597 fs_fd = inotify_init (); 3189 fs_fd = infy_newfd ();
2598 3190
3191 if (fs_fd >= 0)
3192 {
3193 fd_intern (fs_fd);
3194 ev_io_set (&fs_w, fs_fd, EV_READ);
3195 ev_io_start (EV_A_ &fs_w);
3196 ev_unref (EV_A);
3197 }
3198
2599 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3199 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2600 { 3200 {
2601 WL w_ = fs_hash [slot].head; 3201 WL w_ = fs_hash [slot].head;
2602 fs_hash [slot].head = 0; 3202 fs_hash [slot].head = 0;
2603 3203
2604 while (w_) 3204 while (w_)
… …
2609 w->wd = -1; 3209 w->wd = -1;
2610 3210
2611 if (fs_fd >= 0) 3211 if (fs_fd >= 0)
2612 infy_add (EV_A_ w); /* re-add, no matter what */ 3212 infy_add (EV_A_ w); /* re-add, no matter what */
2613 else 3213 else
3214 {
3215 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3216 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2614 ev_timer_again (EV_A_ &w->timer); 3217 ev_timer_again (EV_A_ &w->timer);
3218 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3219 }
2615 } 3220 }
2616 } 3221 }
2617} 3222}
2618 3223
2619#endif 3224#endif
… …
2636static void noinline 3241static void noinline
2637stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3242stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2638{ 3243{
2639 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3244 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2640 3245
2641 /* we copy this here each the time so that */ 3246 ev_statdata prev = w->attr;
2642 /* prev has the old value when the callback gets invoked */
2643 w->prev = w->attr;
2644 ev_stat_stat (EV_A_ w); 3247 ev_stat_stat (EV_A_ w);
2645 3248
2646 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3249 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2647 if ( 3250 if (
2648 w->prev.st_dev != w->attr.st_dev 3251 prev.st_dev != w->attr.st_dev
2649 || w->prev.st_ino != w->attr.st_ino 3252 || prev.st_ino != w->attr.st_ino
2650 || w->prev.st_mode != w->attr.st_mode 3253 || prev.st_mode != w->attr.st_mode
2651 || w->prev.st_nlink != w->attr.st_nlink 3254 || prev.st_nlink != w->attr.st_nlink
2652 || w->prev.st_uid != w->attr.st_uid 3255 || prev.st_uid != w->attr.st_uid
2653 || w->prev.st_gid != w->attr.st_gid 3256 || prev.st_gid != w->attr.st_gid
2654 || w->prev.st_rdev != w->attr.st_rdev 3257 || prev.st_rdev != w->attr.st_rdev
2655 || w->prev.st_size != w->attr.st_size 3258 || prev.st_size != w->attr.st_size
2656 || w->prev.st_atime != w->attr.st_atime 3259 || prev.st_atime != w->attr.st_atime
2657 || w->prev.st_mtime != w->attr.st_mtime 3260 || prev.st_mtime != w->attr.st_mtime
2658 || w->prev.st_ctime != w->attr.st_ctime 3261 || prev.st_ctime != w->attr.st_ctime
2659 ) { 3262 ) {
3263 /* we only update w->prev on actual differences */
3264 /* in case we test more often than invoke the callback, */
3265 /* to ensure that prev is always different to attr */
3266 w->prev = prev;
3267
2660 #if EV_USE_INOTIFY 3268 #if EV_USE_INOTIFY
2661 if (fs_fd >= 0) 3269 if (fs_fd >= 0)
2662 { 3270 {
2663 infy_del (EV_A_ w); 3271 infy_del (EV_A_ w);
2664 infy_add (EV_A_ w); 3272 infy_add (EV_A_ w);
… …
2689 3297
2690 if (fs_fd >= 0) 3298 if (fs_fd >= 0)
2691 infy_add (EV_A_ w); 3299 infy_add (EV_A_ w);
2692 else 3300 else
2693#endif 3301#endif
3302 {
2694 ev_timer_again (EV_A_ &w->timer); 3303 ev_timer_again (EV_A_ &w->timer);
3304 ev_unref (EV_A);
3305 }
2695 3306
2696 ev_start (EV_A_ (W)w, 1); 3307 ev_start (EV_A_ (W)w, 1);
2697 3308
2698 EV_FREQUENT_CHECK; 3309 EV_FREQUENT_CHECK;
2699} 3310}
… …
2708 EV_FREQUENT_CHECK; 3319 EV_FREQUENT_CHECK;
2709 3320
2710#if EV_USE_INOTIFY 3321#if EV_USE_INOTIFY
2711 infy_del (EV_A_ w); 3322 infy_del (EV_A_ w);
2712#endif 3323#endif
3324
3325 if (ev_is_active (&w->timer))
3326 {
3327 ev_ref (EV_A);
2713 ev_timer_stop (EV_A_ &w->timer); 3328 ev_timer_stop (EV_A_ &w->timer);
3329 }
2714 3330
2715 ev_stop (EV_A_ (W)w); 3331 ev_stop (EV_A_ (W)w);
2716 3332
2717 EV_FREQUENT_CHECK; 3333 EV_FREQUENT_CHECK;
2718} 3334}
… …
2763 3379
2764 EV_FREQUENT_CHECK; 3380 EV_FREQUENT_CHECK;
2765} 3381}
2766#endif 3382#endif
2767 3383
3384#if EV_PREPARE_ENABLE
2768void 3385void
2769ev_prepare_start (EV_P_ ev_prepare *w) 3386ev_prepare_start (EV_P_ ev_prepare *w)
2770{ 3387{
2771 if (expect_false (ev_is_active (w))) 3388 if (expect_false (ev_is_active (w)))
2772 return; 3389 return;
… …
2798 3415
2799 ev_stop (EV_A_ (W)w); 3416 ev_stop (EV_A_ (W)w);
2800 3417
2801 EV_FREQUENT_CHECK; 3418 EV_FREQUENT_CHECK;
2802} 3419}
3420#endif
2803 3421
3422#if EV_CHECK_ENABLE
2804void 3423void
2805ev_check_start (EV_P_ ev_check *w) 3424ev_check_start (EV_P_ ev_check *w)
2806{ 3425{
2807 if (expect_false (ev_is_active (w))) 3426 if (expect_false (ev_is_active (w)))
2808 return; 3427 return;
… …
2834 3453
2835 ev_stop (EV_A_ (W)w); 3454 ev_stop (EV_A_ (W)w);
2836 3455
2837 EV_FREQUENT_CHECK; 3456 EV_FREQUENT_CHECK;
2838} 3457}
3458#endif
2839 3459
2840#if EV_EMBED_ENABLE 3460#if EV_EMBED_ENABLE
2841void noinline 3461void noinline
2842ev_embed_sweep (EV_P_ ev_embed *w) 3462ev_embed_sweep (EV_P_ ev_embed *w)
2843{ 3463{
2844 ev_loop (w->other, EVLOOP_NONBLOCK); 3464 ev_run (w->other, EVRUN_NOWAIT);
2845} 3465}
2846 3466
2847static void 3467static void
2848embed_io_cb (EV_P_ ev_io *io, int revents) 3468embed_io_cb (EV_P_ ev_io *io, int revents)
2849{ 3469{
2850 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3470 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2851 3471
2852 if (ev_cb (w)) 3472 if (ev_cb (w))
2853 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3473 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2854 else 3474 else
2855 ev_loop (w->other, EVLOOP_NONBLOCK); 3475 ev_run (w->other, EVRUN_NOWAIT);
2856} 3476}
2857 3477
2858static void 3478static void
2859embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3479embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2860{ 3480{
2861 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3481 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2862 3482
2863 { 3483 {
2864 struct ev_loop *loop = w->other; 3484 EV_P = w->other;
2865 3485
2866 while (fdchangecnt) 3486 while (fdchangecnt)
2867 { 3487 {
2868 fd_reify (EV_A); 3488 fd_reify (EV_A);
2869 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3489 ev_run (EV_A_ EVRUN_NOWAIT);
2870 } 3490 }
2871 } 3491 }
2872} 3492}
2873 3493
2874static void 3494static void
2875embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3495embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2876{ 3496{
2877 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3497 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2878 3498
3499 ev_embed_stop (EV_A_ w);
3500
2879 { 3501 {
2880 struct ev_loop *loop = w->other; 3502 EV_P = w->other;
2881 3503
2882 ev_loop_fork (EV_A); 3504 ev_loop_fork (EV_A);
3505 ev_run (EV_A_ EVRUN_NOWAIT);
2883 } 3506 }
3507
3508 ev_embed_start (EV_A_ w);
2884} 3509}
2885 3510
2886#if 0 3511#if 0
2887static void 3512static void
2888embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3513embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2896{ 3521{
2897 if (expect_false (ev_is_active (w))) 3522 if (expect_false (ev_is_active (w)))
2898 return; 3523 return;
2899 3524
2900 { 3525 {
2901 struct ev_loop *loop = w->other; 3526 EV_P = w->other;
2902 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3527 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2903 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3528 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2904 } 3529 }
2905 3530
2906 EV_FREQUENT_CHECK; 3531 EV_FREQUENT_CHECK;
2907 3532
… …
2933 3558
2934 ev_io_stop (EV_A_ &w->io); 3559 ev_io_stop (EV_A_ &w->io);
2935 ev_prepare_stop (EV_A_ &w->prepare); 3560 ev_prepare_stop (EV_A_ &w->prepare);
2936 ev_fork_stop (EV_A_ &w->fork); 3561 ev_fork_stop (EV_A_ &w->fork);
2937 3562
3563 ev_stop (EV_A_ (W)w);
3564
2938 EV_FREQUENT_CHECK; 3565 EV_FREQUENT_CHECK;
2939} 3566}
2940#endif 3567#endif
2941 3568
2942#if EV_FORK_ENABLE 3569#if EV_FORK_ENABLE
… …
2975 3602
2976 EV_FREQUENT_CHECK; 3603 EV_FREQUENT_CHECK;
2977} 3604}
2978#endif 3605#endif
2979 3606
2980#if EV_ASYNC_ENABLE 3607#if EV_CLEANUP_ENABLE
2981void 3608void
2982ev_async_start (EV_P_ ev_async *w) 3609ev_cleanup_start (EV_P_ ev_cleanup *w)
2983{ 3610{
2984 if (expect_false (ev_is_active (w))) 3611 if (expect_false (ev_is_active (w)))
2985 return; 3612 return;
3613
3614 EV_FREQUENT_CHECK;
3615
3616 ev_start (EV_A_ (W)w, ++cleanupcnt);
3617 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3618 cleanups [cleanupcnt - 1] = w;
3619
3620 /* cleanup watchers should never keep a refcount on the loop */
3621 ev_unref (EV_A);
3622 EV_FREQUENT_CHECK;
3623}
3624
3625void
3626ev_cleanup_stop (EV_P_ ev_cleanup *w)
3627{
3628 clear_pending (EV_A_ (W)w);
3629 if (expect_false (!ev_is_active (w)))
3630 return;
3631
3632 EV_FREQUENT_CHECK;
3633 ev_ref (EV_A);
3634
3635 {
3636 int active = ev_active (w);
3637
3638 cleanups [active - 1] = cleanups [--cleanupcnt];
3639 ev_active (cleanups [active - 1]) = active;
3640 }
3641
3642 ev_stop (EV_A_ (W)w);
3643
3644 EV_FREQUENT_CHECK;
3645}
3646#endif
3647
3648#if EV_ASYNC_ENABLE
3649void
3650ev_async_start (EV_P_ ev_async *w)
3651{
3652 if (expect_false (ev_is_active (w)))
3653 return;
3654
3655 w->sent = 0;
2986 3656
2987 evpipe_init (EV_A); 3657 evpipe_init (EV_A);
2988 3658
2989 EV_FREQUENT_CHECK; 3659 EV_FREQUENT_CHECK;
2990 3660
… …
3018 3688
3019void 3689void
3020ev_async_send (EV_P_ ev_async *w) 3690ev_async_send (EV_P_ ev_async *w)
3021{ 3691{
3022 w->sent = 1; 3692 w->sent = 1;
3023 evpipe_write (EV_A_ &gotasync); 3693 evpipe_write (EV_A_ &async_pending);
3024} 3694}
3025#endif 3695#endif
3026 3696
3027/*****************************************************************************/ 3697/*****************************************************************************/
3028 3698
… …
3068{ 3738{
3069 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3739 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3070 3740
3071 if (expect_false (!once)) 3741 if (expect_false (!once))
3072 { 3742 {
3073 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3743 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3074 return; 3744 return;
3075 } 3745 }
3076 3746
3077 once->cb = cb; 3747 once->cb = cb;
3078 once->arg = arg; 3748 once->arg = arg;
… …
3090 ev_timer_set (&once->to, timeout, 0.); 3760 ev_timer_set (&once->to, timeout, 0.);
3091 ev_timer_start (EV_A_ &once->to); 3761 ev_timer_start (EV_A_ &once->to);
3092 } 3762 }
3093} 3763}
3094 3764
3765/*****************************************************************************/
3766
3767#if EV_WALK_ENABLE
3768void
3769ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3770{
3771 int i, j;
3772 ev_watcher_list *wl, *wn;
3773
3774 if (types & (EV_IO | EV_EMBED))
3775 for (i = 0; i < anfdmax; ++i)
3776 for (wl = anfds [i].head; wl; )
3777 {
3778 wn = wl->next;
3779
3780#if EV_EMBED_ENABLE
3781 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3782 {
3783 if (types & EV_EMBED)
3784 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3785 }
3786 else
3787#endif
3788#if EV_USE_INOTIFY
3789 if (ev_cb ((ev_io *)wl) == infy_cb)
3790 ;
3791 else
3792#endif
3793 if ((ev_io *)wl != &pipe_w)
3794 if (types & EV_IO)
3795 cb (EV_A_ EV_IO, wl);
3796
3797 wl = wn;
3798 }
3799
3800 if (types & (EV_TIMER | EV_STAT))
3801 for (i = timercnt + HEAP0; i-- > HEAP0; )
3802#if EV_STAT_ENABLE
3803 /*TODO: timer is not always active*/
3804 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3805 {
3806 if (types & EV_STAT)
3807 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3808 }
3809 else
3810#endif
3811 if (types & EV_TIMER)
3812 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3813
3814#if EV_PERIODIC_ENABLE
3815 if (types & EV_PERIODIC)
3816 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3817 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3818#endif
3819
3820#if EV_IDLE_ENABLE
3821 if (types & EV_IDLE)
3822 for (j = NUMPRI; i--; )
3823 for (i = idlecnt [j]; i--; )
3824 cb (EV_A_ EV_IDLE, idles [j][i]);
3825#endif
3826
3827#if EV_FORK_ENABLE
3828 if (types & EV_FORK)
3829 for (i = forkcnt; i--; )
3830 if (ev_cb (forks [i]) != embed_fork_cb)
3831 cb (EV_A_ EV_FORK, forks [i]);
3832#endif
3833
3834#if EV_ASYNC_ENABLE
3835 if (types & EV_ASYNC)
3836 for (i = asynccnt; i--; )
3837 cb (EV_A_ EV_ASYNC, asyncs [i]);
3838#endif
3839
3840#if EV_PREPARE_ENABLE
3841 if (types & EV_PREPARE)
3842 for (i = preparecnt; i--; )
3843# if EV_EMBED_ENABLE
3844 if (ev_cb (prepares [i]) != embed_prepare_cb)
3845# endif
3846 cb (EV_A_ EV_PREPARE, prepares [i]);
3847#endif
3848
3849#if EV_CHECK_ENABLE
3850 if (types & EV_CHECK)
3851 for (i = checkcnt; i--; )
3852 cb (EV_A_ EV_CHECK, checks [i]);
3853#endif
3854
3855#if EV_SIGNAL_ENABLE
3856 if (types & EV_SIGNAL)
3857 for (i = 0; i < EV_NSIG - 1; ++i)
3858 for (wl = signals [i].head; wl; )
3859 {
3860 wn = wl->next;
3861 cb (EV_A_ EV_SIGNAL, wl);
3862 wl = wn;
3863 }
3864#endif
3865
3866#if EV_CHILD_ENABLE
3867 if (types & EV_CHILD)
3868 for (i = (EV_PID_HASHSIZE); i--; )
3869 for (wl = childs [i]; wl; )
3870 {
3871 wn = wl->next;
3872 cb (EV_A_ EV_CHILD, wl);
3873 wl = wn;
3874 }
3875#endif
3876/* EV_STAT 0x00001000 /* stat data changed */
3877/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3878}
3879#endif
3880
3095#if EV_MULTIPLICITY 3881#if EV_MULTIPLICITY
3096 #include "ev_wrap.h" 3882 #include "ev_wrap.h"
3097#endif 3883#endif
3098 3884
3099#ifdef __cplusplus 3885EV_CPP(})
3100}
3101#endif
3102 3886

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