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Comparing libev/ev.c (file contents):
Revision 1.264 by root, Mon Oct 13 23:20:12 2008 UTC vs.
Revision 1.367 by root, Tue Jan 11 02:15:58 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> 387# include <sys/statfs.h>
292# include <sys/inotify.h> 388# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 392# define EV_USE_INOTIFY 0
… …
302#endif 398#endif
303 399
304#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
305/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306# include <stdint.h> 402# include <stdint.h>
307# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
308extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
309# endif 405# endif
310int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 407# ifdef O_CLOEXEC
312} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
313# endif 412# endif
413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430
431struct signalfd_siginfo
432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
314#endif 436#endif
315 437
316/**/ 438/**/
317 439
318#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 442#else
321# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
322#endif 444#endif
323 445
324/* 446/*
… …
331 */ 453 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
333 455
334#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
335#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 458
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
337 461
338#if __GNUC__ >= 4 462#if __GNUC__ >= 4
339# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
340# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
341#else 465#else
… …
348 472
349#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
351#define inline_size static inline 475#define inline_size static inline
352 476
353#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
354# define inline_speed static noinline 480# define inline_speed static noinline
481#endif
482
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484
485#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0)
355#else 487#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
361 490
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
364 493
365typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
368 497
369#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
371 500
501#if EV_USE_REALTIME
502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
503/* giving it a reasonably high chance of working on typical architectures */
504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
505#endif
506
372#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
509#endif
510
511#ifndef EV_FD_TO_WIN32_HANDLE
512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
513#endif
514#ifndef EV_WIN32_HANDLE_TO_FD
515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
516#endif
517#ifndef EV_WIN32_CLOSE_FD
518# define EV_WIN32_CLOSE_FD(fd) close (fd)
376#endif 519#endif
377 520
378#ifdef _WIN32 521#ifdef _WIN32
379# include "ev_win32.c" 522# include "ev_win32.c"
380#endif 523#endif
381 524
382/*****************************************************************************/ 525/*****************************************************************************/
383 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
576
384static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
385 578
386void 579void
387ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
388{ 581{
389 syserr_cb = cb; 582 syserr_cb = cb;
390} 583}
391 584
392static void noinline 585static void noinline
393syserr (const char *msg) 586ev_syserr (const char *msg)
394{ 587{
395 if (!msg) 588 if (!msg)
396 msg = "(libev) system error"; 589 msg = "(libev) system error";
397 590
398 if (syserr_cb) 591 if (syserr_cb)
399 syserr_cb (msg); 592 syserr_cb (msg);
400 else 593 else
401 { 594 {
595#if EV_AVOID_STDIO
596 ev_printerr (msg);
597 ev_printerr (": ");
598 ev_printerr (strerror (errno));
599 ev_printerr ("\n");
600#else
402 perror (msg); 601 perror (msg);
602#endif
403 abort (); 603 abort ();
404 } 604 }
405} 605}
406 606
407static void * 607static void *
408ev_realloc_emul (void *ptr, long size) 608ev_realloc_emul (void *ptr, long size)
409{ 609{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
410 /* some systems, notably openbsd and darwin, fail to properly 613 /* some systems, notably openbsd and darwin, fail to properly
411 * 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
412 * the single unix specification, so work around them here. 615 * the single unix specification, so work around them here.
413 */ 616 */
414 617
415 if (size) 618 if (size)
416 return realloc (ptr, size); 619 return realloc (ptr, size);
417 620
418 free (ptr); 621 free (ptr);
419 return 0; 622 return 0;
623#endif
420} 624}
421 625
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
423 627
424void 628void
… …
432{ 636{
433 ptr = alloc (ptr, size); 637 ptr = alloc (ptr, size);
434 638
435 if (!ptr && size) 639 if (!ptr && size)
436 { 640 {
641#if EV_AVOID_STDIO
642 ev_printerr ("(libev) memory allocation failed, aborting.\n");
643#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 644 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
645#endif
438 abort (); 646 abort ();
439 } 647 }
440 648
441 return ptr; 649 return ptr;
442} 650}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 652#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 653#define ev_free(ptr) ev_realloc ((ptr), 0)
446 654
447/*****************************************************************************/ 655/*****************************************************************************/
448 656
657/* set in reify when reification needed */
658#define EV_ANFD_REIFY 1
659
660/* file descriptor info structure */
449typedef struct 661typedef struct
450{ 662{
451 WL head; 663 WL head;
452 unsigned char events; 664 unsigned char events; /* the events watched for */
665 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
666 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
453 unsigned char reify; 667 unsigned char unused;
668#if EV_USE_EPOLL
669 unsigned int egen; /* generation counter to counter epoll bugs */
670#endif
454#if EV_SELECT_IS_WINSOCKET 671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
455 SOCKET handle; 672 SOCKET handle;
456#endif 673#endif
674#if EV_USE_IOCP
675 OVERLAPPED or, ow;
676#endif
457} ANFD; 677} ANFD;
458 678
679/* stores the pending event set for a given watcher */
459typedef struct 680typedef struct
460{ 681{
461 W w; 682 W w;
462 int events; 683 int events; /* the pending event set for the given watcher */
463} ANPENDING; 684} ANPENDING;
464 685
465#if EV_USE_INOTIFY 686#if EV_USE_INOTIFY
466/* hash table entry per inotify-id */ 687/* hash table entry per inotify-id */
467typedef struct 688typedef struct
… …
470} ANFS; 691} ANFS;
471#endif 692#endif
472 693
473/* Heap Entry */ 694/* Heap Entry */
474#if EV_HEAP_CACHE_AT 695#if EV_HEAP_CACHE_AT
696 /* a heap element */
475 typedef struct { 697 typedef struct {
476 ev_tstamp at; 698 ev_tstamp at;
477 WT w; 699 WT w;
478 } ANHE; 700 } ANHE;
479 701
480 #define ANHE_w(he) (he).w /* access watcher, read-write */ 702 #define ANHE_w(he) (he).w /* access watcher, read-write */
481 #define ANHE_at(he) (he).at /* access cached at, read-only */ 703 #define ANHE_at(he) (he).at /* access cached at, read-only */
482 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 704 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
483#else 705#else
706 /* a heap element */
484 typedef WT ANHE; 707 typedef WT ANHE;
485 708
486 #define ANHE_w(he) (he) 709 #define ANHE_w(he) (he)
487 #define ANHE_at(he) (he)->at 710 #define ANHE_at(he) (he)->at
488 #define ANHE_at_cache(he) 711 #define ANHE_at_cache(he)
… …
512 735
513 static int ev_default_loop_ptr; 736 static int ev_default_loop_ptr;
514 737
515#endif 738#endif
516 739
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
517/*****************************************************************************/ 752/*****************************************************************************/
518 753
754#ifndef EV_HAVE_EV_TIME
519ev_tstamp 755ev_tstamp
520ev_time (void) 756ev_time (void)
521{ 757{
522#if EV_USE_REALTIME 758#if EV_USE_REALTIME
759 if (expect_true (have_realtime))
760 {
523 struct timespec ts; 761 struct timespec ts;
524 clock_gettime (CLOCK_REALTIME, &ts); 762 clock_gettime (CLOCK_REALTIME, &ts);
525 return ts.tv_sec + ts.tv_nsec * 1e-9; 763 return ts.tv_sec + ts.tv_nsec * 1e-9;
526#else 764 }
765#endif
766
527 struct timeval tv; 767 struct timeval tv;
528 gettimeofday (&tv, 0); 768 gettimeofday (&tv, 0);
529 return tv.tv_sec + tv.tv_usec * 1e-6; 769 return tv.tv_sec + tv.tv_usec * 1e-6;
530#endif
531} 770}
771#endif
532 772
533ev_tstamp inline_size 773inline_size ev_tstamp
534get_clock (void) 774get_clock (void)
535{ 775{
536#if EV_USE_MONOTONIC 776#if EV_USE_MONOTONIC
537 if (expect_true (have_monotonic)) 777 if (expect_true (have_monotonic))
538 { 778 {
… …
559 if (delay > 0.) 799 if (delay > 0.)
560 { 800 {
561#if EV_USE_NANOSLEEP 801#if EV_USE_NANOSLEEP
562 struct timespec ts; 802 struct timespec ts;
563 803
564 ts.tv_sec = (time_t)delay; 804 EV_TS_SET (ts, delay);
565 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
566
567 nanosleep (&ts, 0); 805 nanosleep (&ts, 0);
568#elif defined(_WIN32) 806#elif defined(_WIN32)
569 Sleep ((unsigned long)(delay * 1e3)); 807 Sleep ((unsigned long)(delay * 1e3));
570#else 808#else
571 struct timeval tv; 809 struct timeval tv;
572 810
573 tv.tv_sec = (time_t)delay;
574 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
575
576 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 811 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
577 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 812 /* something not guaranteed by newer posix versions, but guaranteed */
578 /* by older ones */ 813 /* by older ones */
814 EV_TV_SET (tv, delay);
579 select (0, 0, 0, 0, &tv); 815 select (0, 0, 0, 0, &tv);
580#endif 816#endif
581 } 817 }
582} 818}
583 819
584/*****************************************************************************/ 820/*****************************************************************************/
585 821
586#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 822#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
587 823
588int inline_size 824/* find a suitable new size for the given array, */
825/* hopefully by rounding to a nice-to-malloc size */
826inline_size int
589array_nextsize (int elem, int cur, int cnt) 827array_nextsize (int elem, int cur, int cnt)
590{ 828{
591 int ncur = cur + 1; 829 int ncur = cur + 1;
592 830
593 do 831 do
… …
610array_realloc (int elem, void *base, int *cur, int cnt) 848array_realloc (int elem, void *base, int *cur, int cnt)
611{ 849{
612 *cur = array_nextsize (elem, *cur, cnt); 850 *cur = array_nextsize (elem, *cur, cnt);
613 return ev_realloc (base, elem * *cur); 851 return ev_realloc (base, elem * *cur);
614} 852}
853
854#define array_init_zero(base,count) \
855 memset ((void *)(base), 0, sizeof (*(base)) * (count))
615 856
616#define array_needsize(type,base,cur,cnt,init) \ 857#define array_needsize(type,base,cur,cnt,init) \
617 if (expect_false ((cnt) > (cur))) \ 858 if (expect_false ((cnt) > (cur))) \
618 { \ 859 { \
619 int ocur_ = (cur); \ 860 int ocur_ = (cur); \
… …
631 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 872 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
632 } 873 }
633#endif 874#endif
634 875
635#define array_free(stem, idx) \ 876#define array_free(stem, idx) \
636 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 877 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
637 878
638/*****************************************************************************/ 879/*****************************************************************************/
880
881/* dummy callback for pending events */
882static void noinline
883pendingcb (EV_P_ ev_prepare *w, int revents)
884{
885}
639 886
640void noinline 887void noinline
641ev_feed_event (EV_P_ void *w, int revents) 888ev_feed_event (EV_P_ void *w, int revents)
642{ 889{
643 W w_ = (W)w; 890 W w_ = (W)w;
… …
652 pendings [pri][w_->pending - 1].w = w_; 899 pendings [pri][w_->pending - 1].w = w_;
653 pendings [pri][w_->pending - 1].events = revents; 900 pendings [pri][w_->pending - 1].events = revents;
654 } 901 }
655} 902}
656 903
657void inline_speed 904inline_speed void
905feed_reverse (EV_P_ W w)
906{
907 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
908 rfeeds [rfeedcnt++] = w;
909}
910
911inline_size void
912feed_reverse_done (EV_P_ int revents)
913{
914 do
915 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
916 while (rfeedcnt);
917}
918
919inline_speed void
658queue_events (EV_P_ W *events, int eventcnt, int type) 920queue_events (EV_P_ W *events, int eventcnt, int type)
659{ 921{
660 int i; 922 int i;
661 923
662 for (i = 0; i < eventcnt; ++i) 924 for (i = 0; i < eventcnt; ++i)
663 ev_feed_event (EV_A_ events [i], type); 925 ev_feed_event (EV_A_ events [i], type);
664} 926}
665 927
666/*****************************************************************************/ 928/*****************************************************************************/
667 929
668void inline_size 930inline_speed void
669anfds_init (ANFD *base, int count)
670{
671 while (count--)
672 {
673 base->head = 0;
674 base->events = EV_NONE;
675 base->reify = 0;
676
677 ++base;
678 }
679}
680
681void inline_speed
682fd_event (EV_P_ int fd, int revents) 931fd_event_nocheck (EV_P_ int fd, int revents)
683{ 932{
684 ANFD *anfd = anfds + fd; 933 ANFD *anfd = anfds + fd;
685 ev_io *w; 934 ev_io *w;
686 935
687 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 936 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
691 if (ev) 940 if (ev)
692 ev_feed_event (EV_A_ (W)w, ev); 941 ev_feed_event (EV_A_ (W)w, ev);
693 } 942 }
694} 943}
695 944
945/* do not submit kernel events for fds that have reify set */
946/* because that means they changed while we were polling for new events */
947inline_speed void
948fd_event (EV_P_ int fd, int revents)
949{
950 ANFD *anfd = anfds + fd;
951
952 if (expect_true (!anfd->reify))
953 fd_event_nocheck (EV_A_ fd, revents);
954}
955
696void 956void
697ev_feed_fd_event (EV_P_ int fd, int revents) 957ev_feed_fd_event (EV_P_ int fd, int revents)
698{ 958{
699 if (fd >= 0 && fd < anfdmax) 959 if (fd >= 0 && fd < anfdmax)
700 fd_event (EV_A_ fd, revents); 960 fd_event_nocheck (EV_A_ fd, revents);
701} 961}
702 962
703void inline_size 963/* make sure the external fd watch events are in-sync */
964/* with the kernel/libev internal state */
965inline_size void
704fd_reify (EV_P) 966fd_reify (EV_P)
705{ 967{
706 int i; 968 int i;
707 969
708 for (i = 0; i < fdchangecnt; ++i) 970 for (i = 0; i < fdchangecnt; ++i)
709 { 971 {
710 int fd = fdchanges [i]; 972 int fd = fdchanges [i];
711 ANFD *anfd = anfds + fd; 973 ANFD *anfd = anfds + fd;
712 ev_io *w; 974 ev_io *w;
713 975
714 unsigned char events = 0; 976 unsigned char o_events = anfd->events;
977 unsigned char o_reify = anfd->reify;
715 978
716 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 979 anfd->reify = 0;
717 events |= (unsigned char)w->events;
718 980
719#if EV_SELECT_IS_WINSOCKET 981#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
720 if (events) 982 if (o_reify & EV__IOFDSET)
721 { 983 {
722 unsigned long arg; 984 unsigned long arg;
723 #ifdef EV_FD_TO_WIN32_HANDLE
724 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 985 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
725 #else
726 anfd->handle = _get_osfhandle (fd);
727 #endif
728 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 986 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
987 printf ("oi %d %x\n", fd, anfd->handle);//D
729 } 988 }
730#endif 989#endif
731 990
991 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
732 { 992 {
733 unsigned char o_events = anfd->events;
734 unsigned char o_reify = anfd->reify;
735
736 anfd->reify = 0;
737 anfd->events = events; 993 anfd->events = 0;
738 994
739 if (o_events != events || o_reify & EV_IOFDSET) 995 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
996 anfd->events |= (unsigned char)w->events;
997
998 if (o_events != anfd->events)
999 o_reify = EV__IOFDSET; /* actually |= */
1000 }
1001
1002 if (o_reify & EV__IOFDSET)
740 backend_modify (EV_A_ fd, o_events, events); 1003 backend_modify (EV_A_ fd, o_events, anfd->events);
741 }
742 } 1004 }
743 1005
744 fdchangecnt = 0; 1006 fdchangecnt = 0;
745} 1007}
746 1008
747void inline_size 1009/* something about the given fd changed */
1010inline_size void
748fd_change (EV_P_ int fd, int flags) 1011fd_change (EV_P_ int fd, int flags)
749{ 1012{
750 unsigned char reify = anfds [fd].reify; 1013 unsigned char reify = anfds [fd].reify;
751 anfds [fd].reify |= flags; 1014 anfds [fd].reify |= flags;
752 1015
… …
756 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1019 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
757 fdchanges [fdchangecnt - 1] = fd; 1020 fdchanges [fdchangecnt - 1] = fd;
758 } 1021 }
759} 1022}
760 1023
761void inline_speed 1024/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1025inline_speed void
762fd_kill (EV_P_ int fd) 1026fd_kill (EV_P_ int fd)
763{ 1027{
764 ev_io *w; 1028 ev_io *w;
765 1029
766 while ((w = (ev_io *)anfds [fd].head)) 1030 while ((w = (ev_io *)anfds [fd].head))
… …
768 ev_io_stop (EV_A_ w); 1032 ev_io_stop (EV_A_ w);
769 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1033 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
770 } 1034 }
771} 1035}
772 1036
773int inline_size 1037/* check whether the given fd is actually valid, for error recovery */
1038inline_size int
774fd_valid (int fd) 1039fd_valid (int fd)
775{ 1040{
776#ifdef _WIN32 1041#ifdef _WIN32
777 return _get_osfhandle (fd) != -1; 1042 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
778#else 1043#else
779 return fcntl (fd, F_GETFD) != -1; 1044 return fcntl (fd, F_GETFD) != -1;
780#endif 1045#endif
781} 1046}
782 1047
… …
800 1065
801 for (fd = anfdmax; fd--; ) 1066 for (fd = anfdmax; fd--; )
802 if (anfds [fd].events) 1067 if (anfds [fd].events)
803 { 1068 {
804 fd_kill (EV_A_ fd); 1069 fd_kill (EV_A_ fd);
805 return; 1070 break;
806 } 1071 }
807} 1072}
808 1073
809/* usually called after fork if backend needs to re-arm all fds from scratch */ 1074/* usually called after fork if backend needs to re-arm all fds from scratch */
810static void noinline 1075static void noinline
… …
814 1079
815 for (fd = 0; fd < anfdmax; ++fd) 1080 for (fd = 0; fd < anfdmax; ++fd)
816 if (anfds [fd].events) 1081 if (anfds [fd].events)
817 { 1082 {
818 anfds [fd].events = 0; 1083 anfds [fd].events = 0;
1084 anfds [fd].emask = 0;
819 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1085 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
820 } 1086 }
821} 1087}
822 1088
1089/* used to prepare libev internal fd's */
1090/* this is not fork-safe */
1091inline_speed void
1092fd_intern (int fd)
1093{
1094#ifdef _WIN32
1095 unsigned long arg = 1;
1096 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102
823/*****************************************************************************/ 1103/*****************************************************************************/
824 1104
825/* 1105/*
826 * the heap functions want a real array index. array index 0 uis guaranteed to not 1106 * the heap functions want a real array index. array index 0 is guaranteed to not
827 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1107 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
828 * the branching factor of the d-tree. 1108 * the branching factor of the d-tree.
829 */ 1109 */
830 1110
831/* 1111/*
… …
840#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1120#define HEAP0 (DHEAP - 1) /* index of first element in heap */
841#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1121#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
842#define UPHEAP_DONE(p,k) ((p) == (k)) 1122#define UPHEAP_DONE(p,k) ((p) == (k))
843 1123
844/* away from the root */ 1124/* away from the root */
845void inline_speed 1125inline_speed void
846downheap (ANHE *heap, int N, int k) 1126downheap (ANHE *heap, int N, int k)
847{ 1127{
848 ANHE he = heap [k]; 1128 ANHE he = heap [k];
849 ANHE *E = heap + N + HEAP0; 1129 ANHE *E = heap + N + HEAP0;
850 1130
… …
890#define HEAP0 1 1170#define HEAP0 1
891#define HPARENT(k) ((k) >> 1) 1171#define HPARENT(k) ((k) >> 1)
892#define UPHEAP_DONE(p,k) (!(p)) 1172#define UPHEAP_DONE(p,k) (!(p))
893 1173
894/* away from the root */ 1174/* away from the root */
895void inline_speed 1175inline_speed void
896downheap (ANHE *heap, int N, int k) 1176downheap (ANHE *heap, int N, int k)
897{ 1177{
898 ANHE he = heap [k]; 1178 ANHE he = heap [k];
899 1179
900 for (;;) 1180 for (;;)
901 { 1181 {
902 int c = k << 1; 1182 int c = k << 1;
903 1183
904 if (c > N + HEAP0 - 1) 1184 if (c >= N + HEAP0)
905 break; 1185 break;
906 1186
907 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1187 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
908 ? 1 : 0; 1188 ? 1 : 0;
909 1189
… …
920 ev_active (ANHE_w (he)) = k; 1200 ev_active (ANHE_w (he)) = k;
921} 1201}
922#endif 1202#endif
923 1203
924/* towards the root */ 1204/* towards the root */
925void inline_speed 1205inline_speed void
926upheap (ANHE *heap, int k) 1206upheap (ANHE *heap, int k)
927{ 1207{
928 ANHE he = heap [k]; 1208 ANHE he = heap [k];
929 1209
930 for (;;) 1210 for (;;)
… …
941 1221
942 heap [k] = he; 1222 heap [k] = he;
943 ev_active (ANHE_w (he)) = k; 1223 ev_active (ANHE_w (he)) = k;
944} 1224}
945 1225
946void inline_size 1226/* move an element suitably so it is in a correct place */
1227inline_size void
947adjustheap (ANHE *heap, int N, int k) 1228adjustheap (ANHE *heap, int N, int k)
948{ 1229{
949 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1230 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
950 upheap (heap, k); 1231 upheap (heap, k);
951 else 1232 else
952 downheap (heap, N, k); 1233 downheap (heap, N, k);
953} 1234}
954 1235
955/* rebuild the heap: this function is used only once and executed rarely */ 1236/* rebuild the heap: this function is used only once and executed rarely */
956void inline_size 1237inline_size void
957reheap (ANHE *heap, int N) 1238reheap (ANHE *heap, int N)
958{ 1239{
959 int i; 1240 int i;
960 1241
961 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1242 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
964 upheap (heap, i + HEAP0); 1245 upheap (heap, i + HEAP0);
965} 1246}
966 1247
967/*****************************************************************************/ 1248/*****************************************************************************/
968 1249
1250/* associate signal watchers to a signal signal */
969typedef struct 1251typedef struct
970{ 1252{
1253 EV_ATOMIC_T pending;
1254#if EV_MULTIPLICITY
1255 EV_P;
1256#endif
971 WL head; 1257 WL head;
972 EV_ATOMIC_T gotsig;
973} ANSIG; 1258} ANSIG;
974 1259
975static ANSIG *signals; 1260static ANSIG signals [EV_NSIG - 1];
976static int signalmax;
977
978static EV_ATOMIC_T gotsig;
979
980void inline_size
981signals_init (ANSIG *base, int count)
982{
983 while (count--)
984 {
985 base->head = 0;
986 base->gotsig = 0;
987
988 ++base;
989 }
990}
991 1261
992/*****************************************************************************/ 1262/*****************************************************************************/
993 1263
994void inline_speed 1264#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
995fd_intern (int fd)
996{
997#ifdef _WIN32
998 unsigned long arg = 1;
999 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1000#else
1001 fcntl (fd, F_SETFD, FD_CLOEXEC);
1002 fcntl (fd, F_SETFL, O_NONBLOCK);
1003#endif
1004}
1005 1265
1006static void noinline 1266static void noinline
1007evpipe_init (EV_P) 1267evpipe_init (EV_P)
1008{ 1268{
1009 if (!ev_is_active (&pipeev)) 1269 if (!ev_is_active (&pipe_w))
1010 { 1270 {
1011#if EV_USE_EVENTFD 1271# if EV_USE_EVENTFD
1272 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1273 if (evfd < 0 && errno == EINVAL)
1012 if ((evfd = eventfd (0, 0)) >= 0) 1274 evfd = eventfd (0, 0);
1275
1276 if (evfd >= 0)
1013 { 1277 {
1014 evpipe [0] = -1; 1278 evpipe [0] = -1;
1015 fd_intern (evfd); 1279 fd_intern (evfd); /* doing it twice doesn't hurt */
1016 ev_io_set (&pipeev, evfd, EV_READ); 1280 ev_io_set (&pipe_w, evfd, EV_READ);
1017 } 1281 }
1018 else 1282 else
1019#endif 1283# endif
1020 { 1284 {
1021 while (pipe (evpipe)) 1285 while (pipe (evpipe))
1022 syserr ("(libev) error creating signal/async pipe"); 1286 ev_syserr ("(libev) error creating signal/async pipe");
1023 1287
1024 fd_intern (evpipe [0]); 1288 fd_intern (evpipe [0]);
1025 fd_intern (evpipe [1]); 1289 fd_intern (evpipe [1]);
1026 ev_io_set (&pipeev, evpipe [0], EV_READ); 1290 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1027 } 1291 }
1028 1292
1029 ev_io_start (EV_A_ &pipeev); 1293 ev_io_start (EV_A_ &pipe_w);
1030 ev_unref (EV_A); /* watcher should not keep loop alive */ 1294 ev_unref (EV_A); /* watcher should not keep loop alive */
1031 } 1295 }
1032} 1296}
1033 1297
1034void inline_size 1298inline_size void
1035evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1299evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1036{ 1300{
1037 if (!*flag) 1301 if (!*flag)
1038 { 1302 {
1039 int old_errno = errno; /* save errno because write might clobber it */ 1303 int old_errno = errno; /* save errno because write might clobber it */
1304 char dummy;
1040 1305
1041 *flag = 1; 1306 *flag = 1;
1042 1307
1043#if EV_USE_EVENTFD 1308#if EV_USE_EVENTFD
1044 if (evfd >= 0) 1309 if (evfd >= 0)
… …
1046 uint64_t counter = 1; 1311 uint64_t counter = 1;
1047 write (evfd, &counter, sizeof (uint64_t)); 1312 write (evfd, &counter, sizeof (uint64_t));
1048 } 1313 }
1049 else 1314 else
1050#endif 1315#endif
1316 /* win32 people keep sending patches that change this write() to send() */
1317 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1318 /* so when you think this write should be a send instead, please find out */
1319 /* where your send() is from - it's definitely not the microsoft send, and */
1320 /* tell me. thank you. */
1051 write (evpipe [1], &old_errno, 1); 1321 write (evpipe [1], &dummy, 1);
1052 1322
1053 errno = old_errno; 1323 errno = old_errno;
1054 } 1324 }
1055} 1325}
1056 1326
1327/* called whenever the libev signal pipe */
1328/* got some events (signal, async) */
1057static void 1329static void
1058pipecb (EV_P_ ev_io *iow, int revents) 1330pipecb (EV_P_ ev_io *iow, int revents)
1059{ 1331{
1332 int i;
1333
1060#if EV_USE_EVENTFD 1334#if EV_USE_EVENTFD
1061 if (evfd >= 0) 1335 if (evfd >= 0)
1062 { 1336 {
1063 uint64_t counter; 1337 uint64_t counter;
1064 read (evfd, &counter, sizeof (uint64_t)); 1338 read (evfd, &counter, sizeof (uint64_t));
1065 } 1339 }
1066 else 1340 else
1067#endif 1341#endif
1068 { 1342 {
1069 char dummy; 1343 char dummy;
1344 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1070 read (evpipe [0], &dummy, 1); 1345 read (evpipe [0], &dummy, 1);
1071 } 1346 }
1072 1347
1073 if (gotsig && ev_is_default_loop (EV_A)) 1348 if (sig_pending)
1074 { 1349 {
1075 int signum; 1350 sig_pending = 0;
1076 gotsig = 0;
1077 1351
1078 for (signum = signalmax; signum--; ) 1352 for (i = EV_NSIG - 1; i--; )
1079 if (signals [signum].gotsig) 1353 if (expect_false (signals [i].pending))
1080 ev_feed_signal_event (EV_A_ signum + 1); 1354 ev_feed_signal_event (EV_A_ i + 1);
1081 } 1355 }
1082 1356
1083#if EV_ASYNC_ENABLE 1357#if EV_ASYNC_ENABLE
1084 if (gotasync) 1358 if (async_pending)
1085 { 1359 {
1086 int i; 1360 async_pending = 0;
1087 gotasync = 0;
1088 1361
1089 for (i = asynccnt; i--; ) 1362 for (i = asynccnt; i--; )
1090 if (asyncs [i]->sent) 1363 if (asyncs [i]->sent)
1091 { 1364 {
1092 asyncs [i]->sent = 0; 1365 asyncs [i]->sent = 0;
… …
1096#endif 1369#endif
1097} 1370}
1098 1371
1099/*****************************************************************************/ 1372/*****************************************************************************/
1100 1373
1374void
1375ev_feed_signal (int signum)
1376{
1377#if EV_MULTIPLICITY
1378 EV_P = signals [signum - 1].loop;
1379
1380 if (!EV_A)
1381 return;
1382#endif
1383
1384 signals [signum - 1].pending = 1;
1385 evpipe_write (EV_A_ &sig_pending);
1386}
1387
1101static void 1388static void
1102ev_sighandler (int signum) 1389ev_sighandler (int signum)
1103{ 1390{
1104#if EV_MULTIPLICITY
1105 struct ev_loop *loop = &default_loop_struct;
1106#endif
1107
1108#if _WIN32 1391#ifdef _WIN32
1109 signal (signum, ev_sighandler); 1392 signal (signum, ev_sighandler);
1110#endif 1393#endif
1111 1394
1112 signals [signum - 1].gotsig = 1; 1395 ev_feed_signal (signum);
1113 evpipe_write (EV_A_ &gotsig);
1114} 1396}
1115 1397
1116void noinline 1398void noinline
1117ev_feed_signal_event (EV_P_ int signum) 1399ev_feed_signal_event (EV_P_ int signum)
1118{ 1400{
1119 WL w; 1401 WL w;
1120 1402
1403 if (expect_false (signum <= 0 || signum > EV_NSIG))
1404 return;
1405
1406 --signum;
1407
1121#if EV_MULTIPLICITY 1408#if EV_MULTIPLICITY
1122 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1409 /* it is permissible to try to feed a signal to the wrong loop */
1123#endif 1410 /* or, likely more useful, feeding a signal nobody is waiting for */
1124 1411
1125 --signum; 1412 if (expect_false (signals [signum].loop != EV_A))
1126
1127 if (signum < 0 || signum >= signalmax)
1128 return; 1413 return;
1414#endif
1129 1415
1130 signals [signum].gotsig = 0; 1416 signals [signum].pending = 0;
1131 1417
1132 for (w = signals [signum].head; w; w = w->next) 1418 for (w = signals [signum].head; w; w = w->next)
1133 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1419 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1134} 1420}
1135 1421
1422#if EV_USE_SIGNALFD
1423static void
1424sigfdcb (EV_P_ ev_io *iow, int revents)
1425{
1426 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1427
1428 for (;;)
1429 {
1430 ssize_t res = read (sigfd, si, sizeof (si));
1431
1432 /* not ISO-C, as res might be -1, but works with SuS */
1433 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1434 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1435
1436 if (res < (ssize_t)sizeof (si))
1437 break;
1438 }
1439}
1440#endif
1441
1442#endif
1443
1136/*****************************************************************************/ 1444/*****************************************************************************/
1137 1445
1446#if EV_CHILD_ENABLE
1138static WL childs [EV_PID_HASHSIZE]; 1447static WL childs [EV_PID_HASHSIZE];
1139
1140#ifndef _WIN32
1141 1448
1142static ev_signal childev; 1449static ev_signal childev;
1143 1450
1144#ifndef WIFCONTINUED 1451#ifndef WIFCONTINUED
1145# define WIFCONTINUED(status) 0 1452# define WIFCONTINUED(status) 0
1146#endif 1453#endif
1147 1454
1148void inline_speed 1455/* handle a single child status event */
1456inline_speed void
1149child_reap (EV_P_ int chain, int pid, int status) 1457child_reap (EV_P_ int chain, int pid, int status)
1150{ 1458{
1151 ev_child *w; 1459 ev_child *w;
1152 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1460 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1153 1461
1154 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1462 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1155 { 1463 {
1156 if ((w->pid == pid || !w->pid) 1464 if ((w->pid == pid || !w->pid)
1157 && (!traced || (w->flags & 1))) 1465 && (!traced || (w->flags & 1)))
1158 { 1466 {
1159 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1467 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1166 1474
1167#ifndef WCONTINUED 1475#ifndef WCONTINUED
1168# define WCONTINUED 0 1476# define WCONTINUED 0
1169#endif 1477#endif
1170 1478
1479/* called on sigchld etc., calls waitpid */
1171static void 1480static void
1172childcb (EV_P_ ev_signal *sw, int revents) 1481childcb (EV_P_ ev_signal *sw, int revents)
1173{ 1482{
1174 int pid, status; 1483 int pid, status;
1175 1484
… …
1183 /* make sure we are called again until all children have been reaped */ 1492 /* make sure we are called again until all children have been reaped */
1184 /* we need to do it this way so that the callback gets called before we continue */ 1493 /* we need to do it this way so that the callback gets called before we continue */
1185 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1494 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1186 1495
1187 child_reap (EV_A_ pid, pid, status); 1496 child_reap (EV_A_ pid, pid, status);
1188 if (EV_PID_HASHSIZE > 1) 1497 if ((EV_PID_HASHSIZE) > 1)
1189 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1498 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1190} 1499}
1191 1500
1192#endif 1501#endif
1193 1502
1194/*****************************************************************************/ 1503/*****************************************************************************/
1195 1504
1505#if EV_USE_IOCP
1506# include "ev_iocp.c"
1507#endif
1196#if EV_USE_PORT 1508#if EV_USE_PORT
1197# include "ev_port.c" 1509# include "ev_port.c"
1198#endif 1510#endif
1199#if EV_USE_KQUEUE 1511#if EV_USE_KQUEUE
1200# include "ev_kqueue.c" 1512# include "ev_kqueue.c"
… …
1256 /* kqueue is borked on everything but netbsd apparently */ 1568 /* kqueue is borked on everything but netbsd apparently */
1257 /* it usually doesn't work correctly on anything but sockets and pipes */ 1569 /* it usually doesn't work correctly on anything but sockets and pipes */
1258 flags &= ~EVBACKEND_KQUEUE; 1570 flags &= ~EVBACKEND_KQUEUE;
1259#endif 1571#endif
1260#ifdef __APPLE__ 1572#ifdef __APPLE__
1261 // flags &= ~EVBACKEND_KQUEUE; for documentation 1573 /* only select works correctly on that "unix-certified" platform */
1262 flags &= ~EVBACKEND_POLL; 1574 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1575 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1576#endif
1577#ifdef __FreeBSD__
1578 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1263#endif 1579#endif
1264 1580
1265 return flags; 1581 return flags;
1266} 1582}
1267 1583
… …
1269ev_embeddable_backends (void) 1585ev_embeddable_backends (void)
1270{ 1586{
1271 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1587 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1272 1588
1273 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1589 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1274 /* please fix it and tell me how to detect the fix */ 1590 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1275 flags &= ~EVBACKEND_EPOLL; 1591 flags &= ~EVBACKEND_EPOLL;
1276 1592
1277 return flags; 1593 return flags;
1278} 1594}
1279 1595
1280unsigned int 1596unsigned int
1281ev_backend (EV_P) 1597ev_backend (EV_P)
1282{ 1598{
1283 return backend; 1599 return backend;
1284} 1600}
1285 1601
1602#if EV_FEATURE_API
1286unsigned int 1603unsigned int
1287ev_loop_count (EV_P) 1604ev_iteration (EV_P)
1288{ 1605{
1289 return loop_count; 1606 return loop_count;
1290} 1607}
1291 1608
1609unsigned int
1610ev_depth (EV_P)
1611{
1612 return loop_depth;
1613}
1614
1292void 1615void
1293ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1616ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1294{ 1617{
1295 io_blocktime = interval; 1618 io_blocktime = interval;
1296} 1619}
… …
1299ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1622ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1300{ 1623{
1301 timeout_blocktime = interval; 1624 timeout_blocktime = interval;
1302} 1625}
1303 1626
1627void
1628ev_set_userdata (EV_P_ void *data)
1629{
1630 userdata = data;
1631}
1632
1633void *
1634ev_userdata (EV_P)
1635{
1636 return userdata;
1637}
1638
1639void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1640{
1641 invoke_cb = invoke_pending_cb;
1642}
1643
1644void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1645{
1646 release_cb = release;
1647 acquire_cb = acquire;
1648}
1649#endif
1650
1651/* initialise a loop structure, must be zero-initialised */
1304static void noinline 1652static void noinline
1305loop_init (EV_P_ unsigned int flags) 1653loop_init (EV_P_ unsigned int flags)
1306{ 1654{
1307 if (!backend) 1655 if (!backend)
1308 { 1656 {
1657 origflags = flags;
1658
1659#if EV_USE_REALTIME
1660 if (!have_realtime)
1661 {
1662 struct timespec ts;
1663
1664 if (!clock_gettime (CLOCK_REALTIME, &ts))
1665 have_realtime = 1;
1666 }
1667#endif
1668
1309#if EV_USE_MONOTONIC 1669#if EV_USE_MONOTONIC
1670 if (!have_monotonic)
1310 { 1671 {
1311 struct timespec ts; 1672 struct timespec ts;
1673
1312 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1674 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1313 have_monotonic = 1; 1675 have_monotonic = 1;
1314 } 1676 }
1315#endif 1677#endif
1678
1679 /* pid check not overridable via env */
1680#ifndef _WIN32
1681 if (flags & EVFLAG_FORKCHECK)
1682 curpid = getpid ();
1683#endif
1684
1685 if (!(flags & EVFLAG_NOENV)
1686 && !enable_secure ()
1687 && getenv ("LIBEV_FLAGS"))
1688 flags = atoi (getenv ("LIBEV_FLAGS"));
1316 1689
1317 ev_rt_now = ev_time (); 1690 ev_rt_now = ev_time ();
1318 mn_now = get_clock (); 1691 mn_now = get_clock ();
1319 now_floor = mn_now; 1692 now_floor = mn_now;
1320 rtmn_diff = ev_rt_now - mn_now; 1693 rtmn_diff = ev_rt_now - mn_now;
1694#if EV_FEATURE_API
1695 invoke_cb = ev_invoke_pending;
1696#endif
1321 1697
1322 io_blocktime = 0.; 1698 io_blocktime = 0.;
1323 timeout_blocktime = 0.; 1699 timeout_blocktime = 0.;
1324 backend = 0; 1700 backend = 0;
1325 backend_fd = -1; 1701 backend_fd = -1;
1326 gotasync = 0; 1702 sig_pending = 0;
1703#if EV_ASYNC_ENABLE
1704 async_pending = 0;
1705#endif
1327#if EV_USE_INOTIFY 1706#if EV_USE_INOTIFY
1328 fs_fd = -2; 1707 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1329#endif 1708#endif
1330 1709#if EV_USE_SIGNALFD
1331 /* pid check not overridable via env */ 1710 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1332#ifndef _WIN32
1333 if (flags & EVFLAG_FORKCHECK)
1334 curpid = getpid ();
1335#endif 1711#endif
1336 1712
1337 if (!(flags & EVFLAG_NOENV) 1713 if (!(flags & EVBACKEND_MASK))
1338 && !enable_secure ()
1339 && getenv ("LIBEV_FLAGS"))
1340 flags = atoi (getenv ("LIBEV_FLAGS"));
1341
1342 if (!(flags & 0x0000ffffU))
1343 flags |= ev_recommended_backends (); 1714 flags |= ev_recommended_backends ();
1344 1715
1716#if EV_USE_IOCP
1717 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1718#endif
1345#if EV_USE_PORT 1719#if EV_USE_PORT
1346 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1720 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1347#endif 1721#endif
1348#if EV_USE_KQUEUE 1722#if EV_USE_KQUEUE
1349 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1356#endif 1730#endif
1357#if EV_USE_SELECT 1731#if EV_USE_SELECT
1358 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1732 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1359#endif 1733#endif
1360 1734
1735 ev_prepare_init (&pending_w, pendingcb);
1736
1737#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1361 ev_init (&pipeev, pipecb); 1738 ev_init (&pipe_w, pipecb);
1362 ev_set_priority (&pipeev, EV_MAXPRI); 1739 ev_set_priority (&pipe_w, EV_MAXPRI);
1740#endif
1363 } 1741 }
1364} 1742}
1365 1743
1366static void noinline 1744/* free up a loop structure */
1745void
1367loop_destroy (EV_P) 1746ev_loop_destroy (EV_P)
1368{ 1747{
1369 int i; 1748 int i;
1370 1749
1750#if EV_MULTIPLICITY
1751 /* mimic free (0) */
1752 if (!EV_A)
1753 return;
1754#endif
1755
1756#if EV_CLEANUP_ENABLE
1757 /* queue cleanup watchers (and execute them) */
1758 if (expect_false (cleanupcnt))
1759 {
1760 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1761 EV_INVOKE_PENDING;
1762 }
1763#endif
1764
1765#if EV_CHILD_ENABLE
1766 if (ev_is_active (&childev))
1767 {
1768 ev_ref (EV_A); /* child watcher */
1769 ev_signal_stop (EV_A_ &childev);
1770 }
1771#endif
1772
1371 if (ev_is_active (&pipeev)) 1773 if (ev_is_active (&pipe_w))
1372 { 1774 {
1373 ev_ref (EV_A); /* signal watcher */ 1775 /*ev_ref (EV_A);*/
1374 ev_io_stop (EV_A_ &pipeev); 1776 /*ev_io_stop (EV_A_ &pipe_w);*/
1375 1777
1376#if EV_USE_EVENTFD 1778#if EV_USE_EVENTFD
1377 if (evfd >= 0) 1779 if (evfd >= 0)
1378 close (evfd); 1780 close (evfd);
1379#endif 1781#endif
1380 1782
1381 if (evpipe [0] >= 0) 1783 if (evpipe [0] >= 0)
1382 { 1784 {
1383 close (evpipe [0]); 1785 EV_WIN32_CLOSE_FD (evpipe [0]);
1384 close (evpipe [1]); 1786 EV_WIN32_CLOSE_FD (evpipe [1]);
1385 } 1787 }
1386 } 1788 }
1789
1790#if EV_USE_SIGNALFD
1791 if (ev_is_active (&sigfd_w))
1792 close (sigfd);
1793#endif
1387 1794
1388#if EV_USE_INOTIFY 1795#if EV_USE_INOTIFY
1389 if (fs_fd >= 0) 1796 if (fs_fd >= 0)
1390 close (fs_fd); 1797 close (fs_fd);
1391#endif 1798#endif
1392 1799
1393 if (backend_fd >= 0) 1800 if (backend_fd >= 0)
1394 close (backend_fd); 1801 close (backend_fd);
1395 1802
1803#if EV_USE_IOCP
1804 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1805#endif
1396#if EV_USE_PORT 1806#if EV_USE_PORT
1397 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1807 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1398#endif 1808#endif
1399#if EV_USE_KQUEUE 1809#if EV_USE_KQUEUE
1400 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1810 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1415#if EV_IDLE_ENABLE 1825#if EV_IDLE_ENABLE
1416 array_free (idle, [i]); 1826 array_free (idle, [i]);
1417#endif 1827#endif
1418 } 1828 }
1419 1829
1420 ev_free (anfds); anfdmax = 0; 1830 ev_free (anfds); anfds = 0; anfdmax = 0;
1421 1831
1422 /* have to use the microsoft-never-gets-it-right macro */ 1832 /* have to use the microsoft-never-gets-it-right macro */
1833 array_free (rfeed, EMPTY);
1423 array_free (fdchange, EMPTY); 1834 array_free (fdchange, EMPTY);
1424 array_free (timer, EMPTY); 1835 array_free (timer, EMPTY);
1425#if EV_PERIODIC_ENABLE 1836#if EV_PERIODIC_ENABLE
1426 array_free (periodic, EMPTY); 1837 array_free (periodic, EMPTY);
1427#endif 1838#endif
1428#if EV_FORK_ENABLE 1839#if EV_FORK_ENABLE
1429 array_free (fork, EMPTY); 1840 array_free (fork, EMPTY);
1430#endif 1841#endif
1842#if EV_CLEANUP_ENABLE
1843 array_free (cleanup, EMPTY);
1844#endif
1431 array_free (prepare, EMPTY); 1845 array_free (prepare, EMPTY);
1432 array_free (check, EMPTY); 1846 array_free (check, EMPTY);
1433#if EV_ASYNC_ENABLE 1847#if EV_ASYNC_ENABLE
1434 array_free (async, EMPTY); 1848 array_free (async, EMPTY);
1435#endif 1849#endif
1436 1850
1437 backend = 0; 1851 backend = 0;
1852
1853#if EV_MULTIPLICITY
1854 if (ev_is_default_loop (EV_A))
1855#endif
1856 ev_default_loop_ptr = 0;
1857#if EV_MULTIPLICITY
1858 else
1859 ev_free (EV_A);
1860#endif
1438} 1861}
1439 1862
1440#if EV_USE_INOTIFY 1863#if EV_USE_INOTIFY
1441void inline_size infy_fork (EV_P); 1864inline_size void infy_fork (EV_P);
1442#endif 1865#endif
1443 1866
1444void inline_size 1867inline_size void
1445loop_fork (EV_P) 1868loop_fork (EV_P)
1446{ 1869{
1447#if EV_USE_PORT 1870#if EV_USE_PORT
1448 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1871 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1449#endif 1872#endif
… …
1455#endif 1878#endif
1456#if EV_USE_INOTIFY 1879#if EV_USE_INOTIFY
1457 infy_fork (EV_A); 1880 infy_fork (EV_A);
1458#endif 1881#endif
1459 1882
1460 if (ev_is_active (&pipeev)) 1883 if (ev_is_active (&pipe_w))
1461 { 1884 {
1462 /* this "locks" the handlers against writing to the pipe */ 1885 /* this "locks" the handlers against writing to the pipe */
1463 /* while we modify the fd vars */ 1886 /* while we modify the fd vars */
1464 gotsig = 1; 1887 sig_pending = 1;
1465#if EV_ASYNC_ENABLE 1888#if EV_ASYNC_ENABLE
1466 gotasync = 1; 1889 async_pending = 1;
1467#endif 1890#endif
1468 1891
1469 ev_ref (EV_A); 1892 ev_ref (EV_A);
1470 ev_io_stop (EV_A_ &pipeev); 1893 ev_io_stop (EV_A_ &pipe_w);
1471 1894
1472#if EV_USE_EVENTFD 1895#if EV_USE_EVENTFD
1473 if (evfd >= 0) 1896 if (evfd >= 0)
1474 close (evfd); 1897 close (evfd);
1475#endif 1898#endif
1476 1899
1477 if (evpipe [0] >= 0) 1900 if (evpipe [0] >= 0)
1478 { 1901 {
1479 close (evpipe [0]); 1902 EV_WIN32_CLOSE_FD (evpipe [0]);
1480 close (evpipe [1]); 1903 EV_WIN32_CLOSE_FD (evpipe [1]);
1481 } 1904 }
1482 1905
1906#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1483 evpipe_init (EV_A); 1907 evpipe_init (EV_A);
1484 /* now iterate over everything, in case we missed something */ 1908 /* now iterate over everything, in case we missed something */
1485 pipecb (EV_A_ &pipeev, EV_READ); 1909 pipecb (EV_A_ &pipe_w, EV_READ);
1910#endif
1486 } 1911 }
1487 1912
1488 postfork = 0; 1913 postfork = 0;
1489} 1914}
1490 1915
1491#if EV_MULTIPLICITY 1916#if EV_MULTIPLICITY
1492 1917
1493struct ev_loop * 1918struct ev_loop *
1494ev_loop_new (unsigned int flags) 1919ev_loop_new (unsigned int flags)
1495{ 1920{
1496 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1921 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1497 1922
1498 memset (loop, 0, sizeof (struct ev_loop)); 1923 memset (EV_A, 0, sizeof (struct ev_loop));
1499
1500 loop_init (EV_A_ flags); 1924 loop_init (EV_A_ flags);
1501 1925
1502 if (ev_backend (EV_A)) 1926 if (ev_backend (EV_A))
1503 return loop; 1927 return EV_A;
1504 1928
1929 ev_free (EV_A);
1505 return 0; 1930 return 0;
1506} 1931}
1507 1932
1508void 1933#endif /* multiplicity */
1509ev_loop_destroy (EV_P)
1510{
1511 loop_destroy (EV_A);
1512 ev_free (loop);
1513}
1514
1515void
1516ev_loop_fork (EV_P)
1517{
1518 postfork = 1; /* must be in line with ev_default_fork */
1519}
1520 1934
1521#if EV_VERIFY 1935#if EV_VERIFY
1522static void noinline 1936static void noinline
1523verify_watcher (EV_P_ W w) 1937verify_watcher (EV_P_ W w)
1524{ 1938{
1525 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1939 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1526 1940
1527 if (w->pending) 1941 if (w->pending)
1528 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1942 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1529} 1943}
1530 1944
1531static void noinline 1945static void noinline
1532verify_heap (EV_P_ ANHE *heap, int N) 1946verify_heap (EV_P_ ANHE *heap, int N)
1533{ 1947{
1534 int i; 1948 int i;
1535 1949
1536 for (i = HEAP0; i < N + HEAP0; ++i) 1950 for (i = HEAP0; i < N + HEAP0; ++i)
1537 { 1951 {
1538 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1952 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1539 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1953 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1540 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1954 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1541 1955
1542 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1956 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1543 } 1957 }
1544} 1958}
1545 1959
1546static void noinline 1960static void noinline
1547array_verify (EV_P_ W *ws, int cnt) 1961array_verify (EV_P_ W *ws, int cnt)
1548{ 1962{
1549 while (cnt--) 1963 while (cnt--)
1550 { 1964 {
1551 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1965 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1552 verify_watcher (EV_A_ ws [cnt]); 1966 verify_watcher (EV_A_ ws [cnt]);
1553 } 1967 }
1554} 1968}
1555#endif 1969#endif
1556 1970
1971#if EV_FEATURE_API
1557void 1972void
1558ev_loop_verify (EV_P) 1973ev_verify (EV_P)
1559{ 1974{
1560#if EV_VERIFY 1975#if EV_VERIFY
1561 int i; 1976 int i;
1562 WL w; 1977 WL w;
1563 1978
1564 assert (activecnt >= -1); 1979 assert (activecnt >= -1);
1565 1980
1566 assert (fdchangemax >= fdchangecnt); 1981 assert (fdchangemax >= fdchangecnt);
1567 for (i = 0; i < fdchangecnt; ++i) 1982 for (i = 0; i < fdchangecnt; ++i)
1568 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1983 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1569 1984
1570 assert (anfdmax >= 0); 1985 assert (anfdmax >= 0);
1571 for (i = 0; i < anfdmax; ++i) 1986 for (i = 0; i < anfdmax; ++i)
1572 for (w = anfds [i].head; w; w = w->next) 1987 for (w = anfds [i].head; w; w = w->next)
1573 { 1988 {
1574 verify_watcher (EV_A_ (W)w); 1989 verify_watcher (EV_A_ (W)w);
1575 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1990 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1576 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1991 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1577 } 1992 }
1578 1993
1579 assert (timermax >= timercnt); 1994 assert (timermax >= timercnt);
1580 verify_heap (EV_A_ timers, timercnt); 1995 verify_heap (EV_A_ timers, timercnt);
1581 1996
… …
1597#if EV_FORK_ENABLE 2012#if EV_FORK_ENABLE
1598 assert (forkmax >= forkcnt); 2013 assert (forkmax >= forkcnt);
1599 array_verify (EV_A_ (W *)forks, forkcnt); 2014 array_verify (EV_A_ (W *)forks, forkcnt);
1600#endif 2015#endif
1601 2016
2017#if EV_CLEANUP_ENABLE
2018 assert (cleanupmax >= cleanupcnt);
2019 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2020#endif
2021
1602#if EV_ASYNC_ENABLE 2022#if EV_ASYNC_ENABLE
1603 assert (asyncmax >= asynccnt); 2023 assert (asyncmax >= asynccnt);
1604 array_verify (EV_A_ (W *)asyncs, asynccnt); 2024 array_verify (EV_A_ (W *)asyncs, asynccnt);
1605#endif 2025#endif
1606 2026
2027#if EV_PREPARE_ENABLE
1607 assert (preparemax >= preparecnt); 2028 assert (preparemax >= preparecnt);
1608 array_verify (EV_A_ (W *)prepares, preparecnt); 2029 array_verify (EV_A_ (W *)prepares, preparecnt);
2030#endif
1609 2031
2032#if EV_CHECK_ENABLE
1610 assert (checkmax >= checkcnt); 2033 assert (checkmax >= checkcnt);
1611 array_verify (EV_A_ (W *)checks, checkcnt); 2034 array_verify (EV_A_ (W *)checks, checkcnt);
2035#endif
1612 2036
1613# if 0 2037# if 0
2038#if EV_CHILD_ENABLE
1614 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2039 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1615 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2040 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2041#endif
1616# endif 2042# endif
1617#endif 2043#endif
1618} 2044}
1619 2045#endif
1620#endif /* multiplicity */
1621 2046
1622#if EV_MULTIPLICITY 2047#if EV_MULTIPLICITY
1623struct ev_loop * 2048struct ev_loop *
1624ev_default_loop_init (unsigned int flags)
1625#else 2049#else
1626int 2050int
2051#endif
1627ev_default_loop (unsigned int flags) 2052ev_default_loop (unsigned int flags)
1628#endif
1629{ 2053{
1630 if (!ev_default_loop_ptr) 2054 if (!ev_default_loop_ptr)
1631 { 2055 {
1632#if EV_MULTIPLICITY 2056#if EV_MULTIPLICITY
1633 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2057 EV_P = ev_default_loop_ptr = &default_loop_struct;
1634#else 2058#else
1635 ev_default_loop_ptr = 1; 2059 ev_default_loop_ptr = 1;
1636#endif 2060#endif
1637 2061
1638 loop_init (EV_A_ flags); 2062 loop_init (EV_A_ flags);
1639 2063
1640 if (ev_backend (EV_A)) 2064 if (ev_backend (EV_A))
1641 { 2065 {
1642#ifndef _WIN32 2066#if EV_CHILD_ENABLE
1643 ev_signal_init (&childev, childcb, SIGCHLD); 2067 ev_signal_init (&childev, childcb, SIGCHLD);
1644 ev_set_priority (&childev, EV_MAXPRI); 2068 ev_set_priority (&childev, EV_MAXPRI);
1645 ev_signal_start (EV_A_ &childev); 2069 ev_signal_start (EV_A_ &childev);
1646 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2070 ev_unref (EV_A); /* child watcher should not keep loop alive */
1647#endif 2071#endif
… …
1652 2076
1653 return ev_default_loop_ptr; 2077 return ev_default_loop_ptr;
1654} 2078}
1655 2079
1656void 2080void
1657ev_default_destroy (void) 2081ev_loop_fork (EV_P)
1658{ 2082{
1659#if EV_MULTIPLICITY
1660 struct ev_loop *loop = ev_default_loop_ptr;
1661#endif
1662
1663#ifndef _WIN32
1664 ev_ref (EV_A); /* child watcher */
1665 ev_signal_stop (EV_A_ &childev);
1666#endif
1667
1668 loop_destroy (EV_A);
1669}
1670
1671void
1672ev_default_fork (void)
1673{
1674#if EV_MULTIPLICITY
1675 struct ev_loop *loop = ev_default_loop_ptr;
1676#endif
1677
1678 if (backend)
1679 postfork = 1; /* must be in line with ev_loop_fork */ 2083 postfork = 1; /* must be in line with ev_default_fork */
1680} 2084}
1681 2085
1682/*****************************************************************************/ 2086/*****************************************************************************/
1683 2087
1684void 2088void
1685ev_invoke (EV_P_ void *w, int revents) 2089ev_invoke (EV_P_ void *w, int revents)
1686{ 2090{
1687 EV_CB_INVOKE ((W)w, revents); 2091 EV_CB_INVOKE ((W)w, revents);
1688} 2092}
1689 2093
1690void inline_speed 2094unsigned int
1691call_pending (EV_P) 2095ev_pending_count (EV_P)
2096{
2097 int pri;
2098 unsigned int count = 0;
2099
2100 for (pri = NUMPRI; pri--; )
2101 count += pendingcnt [pri];
2102
2103 return count;
2104}
2105
2106void noinline
2107ev_invoke_pending (EV_P)
1692{ 2108{
1693 int pri; 2109 int pri;
1694 2110
1695 for (pri = NUMPRI; pri--; ) 2111 for (pri = NUMPRI; pri--; )
1696 while (pendingcnt [pri]) 2112 while (pendingcnt [pri])
1697 { 2113 {
1698 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2114 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1699 2115
1700 if (expect_true (p->w))
1701 {
1702 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1703
1704 p->w->pending = 0; 2116 p->w->pending = 0;
1705 EV_CB_INVOKE (p->w, p->events); 2117 EV_CB_INVOKE (p->w, p->events);
1706 EV_FREQUENT_CHECK; 2118 EV_FREQUENT_CHECK;
1707 }
1708 } 2119 }
1709} 2120}
1710 2121
1711#if EV_IDLE_ENABLE 2122#if EV_IDLE_ENABLE
1712void inline_size 2123/* make idle watchers pending. this handles the "call-idle */
2124/* only when higher priorities are idle" logic */
2125inline_size void
1713idle_reify (EV_P) 2126idle_reify (EV_P)
1714{ 2127{
1715 if (expect_false (idleall)) 2128 if (expect_false (idleall))
1716 { 2129 {
1717 int pri; 2130 int pri;
… …
1729 } 2142 }
1730 } 2143 }
1731} 2144}
1732#endif 2145#endif
1733 2146
1734void inline_size 2147/* make timers pending */
2148inline_size void
1735timers_reify (EV_P) 2149timers_reify (EV_P)
1736{ 2150{
1737 EV_FREQUENT_CHECK; 2151 EV_FREQUENT_CHECK;
1738 2152
1739 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2153 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1740 { 2154 {
1741 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2155 do
1742
1743 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1744
1745 /* first reschedule or stop timer */
1746 if (w->repeat)
1747 { 2156 {
2157 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2158
2159 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2160
2161 /* first reschedule or stop timer */
2162 if (w->repeat)
2163 {
1748 ev_at (w) += w->repeat; 2164 ev_at (w) += w->repeat;
1749 if (ev_at (w) < mn_now) 2165 if (ev_at (w) < mn_now)
1750 ev_at (w) = mn_now; 2166 ev_at (w) = mn_now;
1751 2167
1752 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2168 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1753 2169
1754 ANHE_at_cache (timers [HEAP0]); 2170 ANHE_at_cache (timers [HEAP0]);
1755 downheap (timers, timercnt, HEAP0); 2171 downheap (timers, timercnt, HEAP0);
2172 }
2173 else
2174 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2175
2176 EV_FREQUENT_CHECK;
2177 feed_reverse (EV_A_ (W)w);
1756 } 2178 }
1757 else 2179 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1758 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1759 2180
1760 EV_FREQUENT_CHECK; 2181 feed_reverse_done (EV_A_ EV_TIMER);
1761 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1762 } 2182 }
1763} 2183}
1764 2184
1765#if EV_PERIODIC_ENABLE 2185#if EV_PERIODIC_ENABLE
1766void inline_size 2186/* make periodics pending */
2187inline_size void
1767periodics_reify (EV_P) 2188periodics_reify (EV_P)
1768{ 2189{
1769 EV_FREQUENT_CHECK; 2190 EV_FREQUENT_CHECK;
1770 2191
1771 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2192 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1772 { 2193 {
1773 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2194 int feed_count = 0;
1774 2195
1775 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2196 do
1776
1777 /* first reschedule or stop timer */
1778 if (w->reschedule_cb)
1779 { 2197 {
2198 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2199
2200 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2201
2202 /* first reschedule or stop timer */
2203 if (w->reschedule_cb)
2204 {
1780 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2205 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1781 2206
1782 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2207 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1783 2208
1784 ANHE_at_cache (periodics [HEAP0]); 2209 ANHE_at_cache (periodics [HEAP0]);
1785 downheap (periodics, periodiccnt, HEAP0); 2210 downheap (periodics, periodiccnt, HEAP0);
2211 }
2212 else if (w->interval)
2213 {
2214 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2215 /* if next trigger time is not sufficiently in the future, put it there */
2216 /* this might happen because of floating point inexactness */
2217 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2218 {
2219 ev_at (w) += w->interval;
2220
2221 /* if interval is unreasonably low we might still have a time in the past */
2222 /* so correct this. this will make the periodic very inexact, but the user */
2223 /* has effectively asked to get triggered more often than possible */
2224 if (ev_at (w) < ev_rt_now)
2225 ev_at (w) = ev_rt_now;
2226 }
2227
2228 ANHE_at_cache (periodics [HEAP0]);
2229 downheap (periodics, periodiccnt, HEAP0);
2230 }
2231 else
2232 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2233
2234 EV_FREQUENT_CHECK;
2235 feed_reverse (EV_A_ (W)w);
1786 } 2236 }
1787 else if (w->interval) 2237 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1788 {
1789 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1790 /* if next trigger time is not sufficiently in the future, put it there */
1791 /* this might happen because of floating point inexactness */
1792 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1793 {
1794 ev_at (w) += w->interval;
1795 2238
1796 /* if interval is unreasonably low we might still have a time in the past */
1797 /* so correct this. this will make the periodic very inexact, but the user */
1798 /* has effectively asked to get triggered more often than possible */
1799 if (ev_at (w) < ev_rt_now)
1800 ev_at (w) = ev_rt_now;
1801 }
1802
1803 ANHE_at_cache (periodics [HEAP0]);
1804 downheap (periodics, periodiccnt, HEAP0);
1805 }
1806 else
1807 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1808
1809 EV_FREQUENT_CHECK;
1810 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2239 feed_reverse_done (EV_A_ EV_PERIODIC);
1811 } 2240 }
1812} 2241}
1813 2242
2243/* simply recalculate all periodics */
2244/* TODO: maybe ensure that at least one event happens when jumping forward? */
1814static void noinline 2245static void noinline
1815periodics_reschedule (EV_P) 2246periodics_reschedule (EV_P)
1816{ 2247{
1817 int i; 2248 int i;
1818 2249
… …
1831 2262
1832 reheap (periodics, periodiccnt); 2263 reheap (periodics, periodiccnt);
1833} 2264}
1834#endif 2265#endif
1835 2266
1836void inline_speed 2267/* adjust all timers by a given offset */
2268static void noinline
2269timers_reschedule (EV_P_ ev_tstamp adjust)
2270{
2271 int i;
2272
2273 for (i = 0; i < timercnt; ++i)
2274 {
2275 ANHE *he = timers + i + HEAP0;
2276 ANHE_w (*he)->at += adjust;
2277 ANHE_at_cache (*he);
2278 }
2279}
2280
2281/* fetch new monotonic and realtime times from the kernel */
2282/* also detect if there was a timejump, and act accordingly */
2283inline_speed void
1837time_update (EV_P_ ev_tstamp max_block) 2284time_update (EV_P_ ev_tstamp max_block)
1838{ 2285{
1839 int i;
1840
1841#if EV_USE_MONOTONIC 2286#if EV_USE_MONOTONIC
1842 if (expect_true (have_monotonic)) 2287 if (expect_true (have_monotonic))
1843 { 2288 {
2289 int i;
1844 ev_tstamp odiff = rtmn_diff; 2290 ev_tstamp odiff = rtmn_diff;
1845 2291
1846 mn_now = get_clock (); 2292 mn_now = get_clock ();
1847 2293
1848 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2294 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1874 ev_rt_now = ev_time (); 2320 ev_rt_now = ev_time ();
1875 mn_now = get_clock (); 2321 mn_now = get_clock ();
1876 now_floor = mn_now; 2322 now_floor = mn_now;
1877 } 2323 }
1878 2324
2325 /* no timer adjustment, as the monotonic clock doesn't jump */
2326 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1879# if EV_PERIODIC_ENABLE 2327# if EV_PERIODIC_ENABLE
1880 periodics_reschedule (EV_A); 2328 periodics_reschedule (EV_A);
1881# endif 2329# endif
1882 /* no timer adjustment, as the monotonic clock doesn't jump */
1883 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1884 } 2330 }
1885 else 2331 else
1886#endif 2332#endif
1887 { 2333 {
1888 ev_rt_now = ev_time (); 2334 ev_rt_now = ev_time ();
1889 2335
1890 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2336 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1891 { 2337 {
2338 /* adjust timers. this is easy, as the offset is the same for all of them */
2339 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1892#if EV_PERIODIC_ENABLE 2340#if EV_PERIODIC_ENABLE
1893 periodics_reschedule (EV_A); 2341 periodics_reschedule (EV_A);
1894#endif 2342#endif
1895 /* adjust timers. this is easy, as the offset is the same for all of them */
1896 for (i = 0; i < timercnt; ++i)
1897 {
1898 ANHE *he = timers + i + HEAP0;
1899 ANHE_w (*he)->at += ev_rt_now - mn_now;
1900 ANHE_at_cache (*he);
1901 }
1902 } 2343 }
1903 2344
1904 mn_now = ev_rt_now; 2345 mn_now = ev_rt_now;
1905 } 2346 }
1906} 2347}
1907 2348
1908void 2349void
1909ev_ref (EV_P)
1910{
1911 ++activecnt;
1912}
1913
1914void
1915ev_unref (EV_P)
1916{
1917 --activecnt;
1918}
1919
1920void
1921ev_now_update (EV_P)
1922{
1923 time_update (EV_A_ 1e100);
1924}
1925
1926static int loop_done;
1927
1928void
1929ev_loop (EV_P_ int flags) 2350ev_run (EV_P_ int flags)
1930{ 2351{
2352#if EV_FEATURE_API
2353 ++loop_depth;
2354#endif
2355
2356 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2357
1931 loop_done = EVUNLOOP_CANCEL; 2358 loop_done = EVBREAK_CANCEL;
1932 2359
1933 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2360 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1934 2361
1935 do 2362 do
1936 { 2363 {
1937#if EV_VERIFY >= 2 2364#if EV_VERIFY >= 2
1938 ev_loop_verify (EV_A); 2365 ev_verify (EV_A);
1939#endif 2366#endif
1940 2367
1941#ifndef _WIN32 2368#ifndef _WIN32
1942 if (expect_false (curpid)) /* penalise the forking check even more */ 2369 if (expect_false (curpid)) /* penalise the forking check even more */
1943 if (expect_false (getpid () != curpid)) 2370 if (expect_false (getpid () != curpid))
… …
1951 /* we might have forked, so queue fork handlers */ 2378 /* we might have forked, so queue fork handlers */
1952 if (expect_false (postfork)) 2379 if (expect_false (postfork))
1953 if (forkcnt) 2380 if (forkcnt)
1954 { 2381 {
1955 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2382 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1956 call_pending (EV_A); 2383 EV_INVOKE_PENDING;
1957 } 2384 }
1958#endif 2385#endif
1959 2386
2387#if EV_PREPARE_ENABLE
1960 /* queue prepare watchers (and execute them) */ 2388 /* queue prepare watchers (and execute them) */
1961 if (expect_false (preparecnt)) 2389 if (expect_false (preparecnt))
1962 { 2390 {
1963 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2391 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1964 call_pending (EV_A); 2392 EV_INVOKE_PENDING;
1965 } 2393 }
2394#endif
1966 2395
1967 if (expect_false (!activecnt)) 2396 if (expect_false (loop_done))
1968 break; 2397 break;
1969 2398
1970 /* we might have forked, so reify kernel state if necessary */ 2399 /* we might have forked, so reify kernel state if necessary */
1971 if (expect_false (postfork)) 2400 if (expect_false (postfork))
1972 loop_fork (EV_A); 2401 loop_fork (EV_A);
… …
1977 /* calculate blocking time */ 2406 /* calculate blocking time */
1978 { 2407 {
1979 ev_tstamp waittime = 0.; 2408 ev_tstamp waittime = 0.;
1980 ev_tstamp sleeptime = 0.; 2409 ev_tstamp sleeptime = 0.;
1981 2410
2411 /* remember old timestamp for io_blocktime calculation */
2412 ev_tstamp prev_mn_now = mn_now;
2413
2414 /* update time to cancel out callback processing overhead */
2415 time_update (EV_A_ 1e100);
2416
1982 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2417 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1983 { 2418 {
1984 /* update time to cancel out callback processing overhead */
1985 time_update (EV_A_ 1e100);
1986
1987 waittime = MAX_BLOCKTIME; 2419 waittime = MAX_BLOCKTIME;
1988 2420
1989 if (timercnt) 2421 if (timercnt)
1990 { 2422 {
1991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2423 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2430 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1999 if (waittime > to) waittime = to; 2431 if (waittime > to) waittime = to;
2000 } 2432 }
2001#endif 2433#endif
2002 2434
2435 /* don't let timeouts decrease the waittime below timeout_blocktime */
2003 if (expect_false (waittime < timeout_blocktime)) 2436 if (expect_false (waittime < timeout_blocktime))
2004 waittime = timeout_blocktime; 2437 waittime = timeout_blocktime;
2005 2438
2006 sleeptime = waittime - backend_fudge; 2439 /* extra check because io_blocktime is commonly 0 */
2007
2008 if (expect_true (sleeptime > io_blocktime)) 2440 if (expect_false (io_blocktime))
2009 sleeptime = io_blocktime;
2010
2011 if (sleeptime)
2012 { 2441 {
2442 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2443
2444 if (sleeptime > waittime - backend_fudge)
2445 sleeptime = waittime - backend_fudge;
2446
2447 if (expect_true (sleeptime > 0.))
2448 {
2013 ev_sleep (sleeptime); 2449 ev_sleep (sleeptime);
2014 waittime -= sleeptime; 2450 waittime -= sleeptime;
2451 }
2015 } 2452 }
2016 } 2453 }
2017 2454
2455#if EV_FEATURE_API
2018 ++loop_count; 2456 ++loop_count;
2457#endif
2458 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2019 backend_poll (EV_A_ waittime); 2459 backend_poll (EV_A_ waittime);
2460 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2020 2461
2021 /* update ev_rt_now, do magic */ 2462 /* update ev_rt_now, do magic */
2022 time_update (EV_A_ waittime + sleeptime); 2463 time_update (EV_A_ waittime + sleeptime);
2023 } 2464 }
2024 2465
… …
2031#if EV_IDLE_ENABLE 2472#if EV_IDLE_ENABLE
2032 /* queue idle watchers unless other events are pending */ 2473 /* queue idle watchers unless other events are pending */
2033 idle_reify (EV_A); 2474 idle_reify (EV_A);
2034#endif 2475#endif
2035 2476
2477#if EV_CHECK_ENABLE
2036 /* queue check watchers, to be executed first */ 2478 /* queue check watchers, to be executed first */
2037 if (expect_false (checkcnt)) 2479 if (expect_false (checkcnt))
2038 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2480 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2481#endif
2039 2482
2040 call_pending (EV_A); 2483 EV_INVOKE_PENDING;
2041 } 2484 }
2042 while (expect_true ( 2485 while (expect_true (
2043 activecnt 2486 activecnt
2044 && !loop_done 2487 && !loop_done
2045 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2488 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2046 )); 2489 ));
2047 2490
2048 if (loop_done == EVUNLOOP_ONE) 2491 if (loop_done == EVBREAK_ONE)
2049 loop_done = EVUNLOOP_CANCEL; 2492 loop_done = EVBREAK_CANCEL;
2050}
2051 2493
2494#if EV_FEATURE_API
2495 --loop_depth;
2496#endif
2497}
2498
2052void 2499void
2053ev_unloop (EV_P_ int how) 2500ev_break (EV_P_ int how)
2054{ 2501{
2055 loop_done = how; 2502 loop_done = how;
2056} 2503}
2057 2504
2505void
2506ev_ref (EV_P)
2507{
2508 ++activecnt;
2509}
2510
2511void
2512ev_unref (EV_P)
2513{
2514 --activecnt;
2515}
2516
2517void
2518ev_now_update (EV_P)
2519{
2520 time_update (EV_A_ 1e100);
2521}
2522
2523void
2524ev_suspend (EV_P)
2525{
2526 ev_now_update (EV_A);
2527}
2528
2529void
2530ev_resume (EV_P)
2531{
2532 ev_tstamp mn_prev = mn_now;
2533
2534 ev_now_update (EV_A);
2535 timers_reschedule (EV_A_ mn_now - mn_prev);
2536#if EV_PERIODIC_ENABLE
2537 /* TODO: really do this? */
2538 periodics_reschedule (EV_A);
2539#endif
2540}
2541
2058/*****************************************************************************/ 2542/*****************************************************************************/
2543/* singly-linked list management, used when the expected list length is short */
2059 2544
2060void inline_size 2545inline_size void
2061wlist_add (WL *head, WL elem) 2546wlist_add (WL *head, WL elem)
2062{ 2547{
2063 elem->next = *head; 2548 elem->next = *head;
2064 *head = elem; 2549 *head = elem;
2065} 2550}
2066 2551
2067void inline_size 2552inline_size void
2068wlist_del (WL *head, WL elem) 2553wlist_del (WL *head, WL elem)
2069{ 2554{
2070 while (*head) 2555 while (*head)
2071 { 2556 {
2072 if (*head == elem) 2557 if (expect_true (*head == elem))
2073 { 2558 {
2074 *head = elem->next; 2559 *head = elem->next;
2075 return; 2560 break;
2076 } 2561 }
2077 2562
2078 head = &(*head)->next; 2563 head = &(*head)->next;
2079 } 2564 }
2080} 2565}
2081 2566
2082void inline_speed 2567/* internal, faster, version of ev_clear_pending */
2568inline_speed void
2083clear_pending (EV_P_ W w) 2569clear_pending (EV_P_ W w)
2084{ 2570{
2085 if (w->pending) 2571 if (w->pending)
2086 { 2572 {
2087 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2573 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2088 w->pending = 0; 2574 w->pending = 0;
2089 } 2575 }
2090} 2576}
2091 2577
2092int 2578int
… …
2096 int pending = w_->pending; 2582 int pending = w_->pending;
2097 2583
2098 if (expect_true (pending)) 2584 if (expect_true (pending))
2099 { 2585 {
2100 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2586 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2587 p->w = (W)&pending_w;
2101 w_->pending = 0; 2588 w_->pending = 0;
2102 p->w = 0;
2103 return p->events; 2589 return p->events;
2104 } 2590 }
2105 else 2591 else
2106 return 0; 2592 return 0;
2107} 2593}
2108 2594
2109void inline_size 2595inline_size void
2110pri_adjust (EV_P_ W w) 2596pri_adjust (EV_P_ W w)
2111{ 2597{
2112 int pri = w->priority; 2598 int pri = ev_priority (w);
2113 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2599 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2114 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2600 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2115 w->priority = pri; 2601 ev_set_priority (w, pri);
2116} 2602}
2117 2603
2118void inline_speed 2604inline_speed void
2119ev_start (EV_P_ W w, int active) 2605ev_start (EV_P_ W w, int active)
2120{ 2606{
2121 pri_adjust (EV_A_ w); 2607 pri_adjust (EV_A_ w);
2122 w->active = active; 2608 w->active = active;
2123 ev_ref (EV_A); 2609 ev_ref (EV_A);
2124} 2610}
2125 2611
2126void inline_size 2612inline_size void
2127ev_stop (EV_P_ W w) 2613ev_stop (EV_P_ W w)
2128{ 2614{
2129 ev_unref (EV_A); 2615 ev_unref (EV_A);
2130 w->active = 0; 2616 w->active = 0;
2131} 2617}
… …
2138 int fd = w->fd; 2624 int fd = w->fd;
2139 2625
2140 if (expect_false (ev_is_active (w))) 2626 if (expect_false (ev_is_active (w)))
2141 return; 2627 return;
2142 2628
2143 assert (("ev_io_start called with negative fd", fd >= 0)); 2629 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2630 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2144 2631
2145 EV_FREQUENT_CHECK; 2632 EV_FREQUENT_CHECK;
2146 2633
2147 ev_start (EV_A_ (W)w, 1); 2634 ev_start (EV_A_ (W)w, 1);
2148 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2635 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2149 wlist_add (&anfds[fd].head, (WL)w); 2636 wlist_add (&anfds[fd].head, (WL)w);
2150 2637
2151 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2638 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2152 w->events &= ~EV_IOFDSET; 2639 w->events &= ~EV__IOFDSET;
2153 2640
2154 EV_FREQUENT_CHECK; 2641 EV_FREQUENT_CHECK;
2155} 2642}
2156 2643
2157void noinline 2644void noinline
… …
2159{ 2646{
2160 clear_pending (EV_A_ (W)w); 2647 clear_pending (EV_A_ (W)w);
2161 if (expect_false (!ev_is_active (w))) 2648 if (expect_false (!ev_is_active (w)))
2162 return; 2649 return;
2163 2650
2164 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2651 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2165 2652
2166 EV_FREQUENT_CHECK; 2653 EV_FREQUENT_CHECK;
2167 2654
2168 wlist_del (&anfds[w->fd].head, (WL)w); 2655 wlist_del (&anfds[w->fd].head, (WL)w);
2169 ev_stop (EV_A_ (W)w); 2656 ev_stop (EV_A_ (W)w);
2170 2657
2171 fd_change (EV_A_ w->fd, 1); 2658 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2172 2659
2173 EV_FREQUENT_CHECK; 2660 EV_FREQUENT_CHECK;
2174} 2661}
2175 2662
2176void noinline 2663void noinline
… …
2179 if (expect_false (ev_is_active (w))) 2666 if (expect_false (ev_is_active (w)))
2180 return; 2667 return;
2181 2668
2182 ev_at (w) += mn_now; 2669 ev_at (w) += mn_now;
2183 2670
2184 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2671 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2185 2672
2186 EV_FREQUENT_CHECK; 2673 EV_FREQUENT_CHECK;
2187 2674
2188 ++timercnt; 2675 ++timercnt;
2189 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2676 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2192 ANHE_at_cache (timers [ev_active (w)]); 2679 ANHE_at_cache (timers [ev_active (w)]);
2193 upheap (timers, ev_active (w)); 2680 upheap (timers, ev_active (w));
2194 2681
2195 EV_FREQUENT_CHECK; 2682 EV_FREQUENT_CHECK;
2196 2683
2197 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2684 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2198} 2685}
2199 2686
2200void noinline 2687void noinline
2201ev_timer_stop (EV_P_ ev_timer *w) 2688ev_timer_stop (EV_P_ ev_timer *w)
2202{ 2689{
… …
2207 EV_FREQUENT_CHECK; 2694 EV_FREQUENT_CHECK;
2208 2695
2209 { 2696 {
2210 int active = ev_active (w); 2697 int active = ev_active (w);
2211 2698
2212 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2699 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2213 2700
2214 --timercnt; 2701 --timercnt;
2215 2702
2216 if (expect_true (active < timercnt + HEAP0)) 2703 if (expect_true (active < timercnt + HEAP0))
2217 { 2704 {
2218 timers [active] = timers [timercnt + HEAP0]; 2705 timers [active] = timers [timercnt + HEAP0];
2219 adjustheap (timers, timercnt, active); 2706 adjustheap (timers, timercnt, active);
2220 } 2707 }
2221 } 2708 }
2222 2709
2223 EV_FREQUENT_CHECK;
2224
2225 ev_at (w) -= mn_now; 2710 ev_at (w) -= mn_now;
2226 2711
2227 ev_stop (EV_A_ (W)w); 2712 ev_stop (EV_A_ (W)w);
2713
2714 EV_FREQUENT_CHECK;
2228} 2715}
2229 2716
2230void noinline 2717void noinline
2231ev_timer_again (EV_P_ ev_timer *w) 2718ev_timer_again (EV_P_ ev_timer *w)
2232{ 2719{
… …
2250 } 2737 }
2251 2738
2252 EV_FREQUENT_CHECK; 2739 EV_FREQUENT_CHECK;
2253} 2740}
2254 2741
2742ev_tstamp
2743ev_timer_remaining (EV_P_ ev_timer *w)
2744{
2745 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2746}
2747
2255#if EV_PERIODIC_ENABLE 2748#if EV_PERIODIC_ENABLE
2256void noinline 2749void noinline
2257ev_periodic_start (EV_P_ ev_periodic *w) 2750ev_periodic_start (EV_P_ ev_periodic *w)
2258{ 2751{
2259 if (expect_false (ev_is_active (w))) 2752 if (expect_false (ev_is_active (w)))
… …
2261 2754
2262 if (w->reschedule_cb) 2755 if (w->reschedule_cb)
2263 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2756 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2264 else if (w->interval) 2757 else if (w->interval)
2265 { 2758 {
2266 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2759 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2267 /* this formula differs from the one in periodic_reify because we do not always round up */ 2760 /* this formula differs from the one in periodic_reify because we do not always round up */
2268 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2761 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2269 } 2762 }
2270 else 2763 else
2271 ev_at (w) = w->offset; 2764 ev_at (w) = w->offset;
… …
2279 ANHE_at_cache (periodics [ev_active (w)]); 2772 ANHE_at_cache (periodics [ev_active (w)]);
2280 upheap (periodics, ev_active (w)); 2773 upheap (periodics, ev_active (w));
2281 2774
2282 EV_FREQUENT_CHECK; 2775 EV_FREQUENT_CHECK;
2283 2776
2284 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2777 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2285} 2778}
2286 2779
2287void noinline 2780void noinline
2288ev_periodic_stop (EV_P_ ev_periodic *w) 2781ev_periodic_stop (EV_P_ ev_periodic *w)
2289{ 2782{
… …
2294 EV_FREQUENT_CHECK; 2787 EV_FREQUENT_CHECK;
2295 2788
2296 { 2789 {
2297 int active = ev_active (w); 2790 int active = ev_active (w);
2298 2791
2299 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2792 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2300 2793
2301 --periodiccnt; 2794 --periodiccnt;
2302 2795
2303 if (expect_true (active < periodiccnt + HEAP0)) 2796 if (expect_true (active < periodiccnt + HEAP0))
2304 { 2797 {
2305 periodics [active] = periodics [periodiccnt + HEAP0]; 2798 periodics [active] = periodics [periodiccnt + HEAP0];
2306 adjustheap (periodics, periodiccnt, active); 2799 adjustheap (periodics, periodiccnt, active);
2307 } 2800 }
2308 } 2801 }
2309 2802
2310 EV_FREQUENT_CHECK;
2311
2312 ev_stop (EV_A_ (W)w); 2803 ev_stop (EV_A_ (W)w);
2804
2805 EV_FREQUENT_CHECK;
2313} 2806}
2314 2807
2315void noinline 2808void noinline
2316ev_periodic_again (EV_P_ ev_periodic *w) 2809ev_periodic_again (EV_P_ ev_periodic *w)
2317{ 2810{
… …
2323 2816
2324#ifndef SA_RESTART 2817#ifndef SA_RESTART
2325# define SA_RESTART 0 2818# define SA_RESTART 0
2326#endif 2819#endif
2327 2820
2821#if EV_SIGNAL_ENABLE
2822
2328void noinline 2823void noinline
2329ev_signal_start (EV_P_ ev_signal *w) 2824ev_signal_start (EV_P_ ev_signal *w)
2330{ 2825{
2331#if EV_MULTIPLICITY
2332 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2333#endif
2334 if (expect_false (ev_is_active (w))) 2826 if (expect_false (ev_is_active (w)))
2335 return; 2827 return;
2336 2828
2337 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2829 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2338 2830
2339 evpipe_init (EV_A); 2831#if EV_MULTIPLICITY
2832 assert (("libev: a signal must not be attached to two different loops",
2833 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2340 2834
2341 EV_FREQUENT_CHECK; 2835 signals [w->signum - 1].loop = EV_A;
2836#endif
2342 2837
2838 EV_FREQUENT_CHECK;
2839
2840#if EV_USE_SIGNALFD
2841 if (sigfd == -2)
2343 { 2842 {
2344#ifndef _WIN32 2843 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2345 sigset_t full, prev; 2844 if (sigfd < 0 && errno == EINVAL)
2346 sigfillset (&full); 2845 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2347 sigprocmask (SIG_SETMASK, &full, &prev);
2348#endif
2349 2846
2350 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2847 if (sigfd >= 0)
2848 {
2849 fd_intern (sigfd); /* doing it twice will not hurt */
2351 2850
2352#ifndef _WIN32 2851 sigemptyset (&sigfd_set);
2353 sigprocmask (SIG_SETMASK, &prev, 0); 2852
2354#endif 2853 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2854 ev_set_priority (&sigfd_w, EV_MAXPRI);
2855 ev_io_start (EV_A_ &sigfd_w);
2856 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2857 }
2355 } 2858 }
2859
2860 if (sigfd >= 0)
2861 {
2862 /* TODO: check .head */
2863 sigaddset (&sigfd_set, w->signum);
2864 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2865
2866 signalfd (sigfd, &sigfd_set, 0);
2867 }
2868#endif
2356 2869
2357 ev_start (EV_A_ (W)w, 1); 2870 ev_start (EV_A_ (W)w, 1);
2358 wlist_add (&signals [w->signum - 1].head, (WL)w); 2871 wlist_add (&signals [w->signum - 1].head, (WL)w);
2359 2872
2360 if (!((WL)w)->next) 2873 if (!((WL)w)->next)
2874# if EV_USE_SIGNALFD
2875 if (sigfd < 0) /*TODO*/
2876# endif
2361 { 2877 {
2362#if _WIN32 2878# ifdef _WIN32
2879 evpipe_init (EV_A);
2880
2363 signal (w->signum, ev_sighandler); 2881 signal (w->signum, ev_sighandler);
2364#else 2882# else
2365 struct sigaction sa; 2883 struct sigaction sa;
2884
2885 evpipe_init (EV_A);
2886
2366 sa.sa_handler = ev_sighandler; 2887 sa.sa_handler = ev_sighandler;
2367 sigfillset (&sa.sa_mask); 2888 sigfillset (&sa.sa_mask);
2368 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2889 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2369 sigaction (w->signum, &sa, 0); 2890 sigaction (w->signum, &sa, 0);
2891
2892 if (origflags & EVFLAG_NOSIGMASK)
2893 {
2894 sigemptyset (&sa.sa_mask);
2895 sigaddset (&sa.sa_mask, w->signum);
2896 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2897 }
2370#endif 2898#endif
2371 } 2899 }
2372 2900
2373 EV_FREQUENT_CHECK; 2901 EV_FREQUENT_CHECK;
2374} 2902}
2375 2903
2376void noinline 2904void noinline
… …
2384 2912
2385 wlist_del (&signals [w->signum - 1].head, (WL)w); 2913 wlist_del (&signals [w->signum - 1].head, (WL)w);
2386 ev_stop (EV_A_ (W)w); 2914 ev_stop (EV_A_ (W)w);
2387 2915
2388 if (!signals [w->signum - 1].head) 2916 if (!signals [w->signum - 1].head)
2917 {
2918#if EV_MULTIPLICITY
2919 signals [w->signum - 1].loop = 0; /* unattach from signal */
2920#endif
2921#if EV_USE_SIGNALFD
2922 if (sigfd >= 0)
2923 {
2924 sigset_t ss;
2925
2926 sigemptyset (&ss);
2927 sigaddset (&ss, w->signum);
2928 sigdelset (&sigfd_set, w->signum);
2929
2930 signalfd (sigfd, &sigfd_set, 0);
2931 sigprocmask (SIG_UNBLOCK, &ss, 0);
2932 }
2933 else
2934#endif
2389 signal (w->signum, SIG_DFL); 2935 signal (w->signum, SIG_DFL);
2936 }
2390 2937
2391 EV_FREQUENT_CHECK; 2938 EV_FREQUENT_CHECK;
2392} 2939}
2940
2941#endif
2942
2943#if EV_CHILD_ENABLE
2393 2944
2394void 2945void
2395ev_child_start (EV_P_ ev_child *w) 2946ev_child_start (EV_P_ ev_child *w)
2396{ 2947{
2397#if EV_MULTIPLICITY 2948#if EV_MULTIPLICITY
2398 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2949 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2399#endif 2950#endif
2400 if (expect_false (ev_is_active (w))) 2951 if (expect_false (ev_is_active (w)))
2401 return; 2952 return;
2402 2953
2403 EV_FREQUENT_CHECK; 2954 EV_FREQUENT_CHECK;
2404 2955
2405 ev_start (EV_A_ (W)w, 1); 2956 ev_start (EV_A_ (W)w, 1);
2406 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2957 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2407 2958
2408 EV_FREQUENT_CHECK; 2959 EV_FREQUENT_CHECK;
2409} 2960}
2410 2961
2411void 2962void
… …
2415 if (expect_false (!ev_is_active (w))) 2966 if (expect_false (!ev_is_active (w)))
2416 return; 2967 return;
2417 2968
2418 EV_FREQUENT_CHECK; 2969 EV_FREQUENT_CHECK;
2419 2970
2420 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2971 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2421 ev_stop (EV_A_ (W)w); 2972 ev_stop (EV_A_ (W)w);
2422 2973
2423 EV_FREQUENT_CHECK; 2974 EV_FREQUENT_CHECK;
2424} 2975}
2976
2977#endif
2425 2978
2426#if EV_STAT_ENABLE 2979#if EV_STAT_ENABLE
2427 2980
2428# ifdef _WIN32 2981# ifdef _WIN32
2429# undef lstat 2982# undef lstat
2430# define lstat(a,b) _stati64 (a,b) 2983# define lstat(a,b) _stati64 (a,b)
2431# endif 2984# endif
2432 2985
2433#define DEF_STAT_INTERVAL 5.0074891 2986#define DEF_STAT_INTERVAL 5.0074891
2987#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2434#define MIN_STAT_INTERVAL 0.1074891 2988#define MIN_STAT_INTERVAL 0.1074891
2435 2989
2436static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2990static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2437 2991
2438#if EV_USE_INOTIFY 2992#if EV_USE_INOTIFY
2439# define EV_INOTIFY_BUFSIZE 8192 2993
2994/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2995# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2440 2996
2441static void noinline 2997static void noinline
2442infy_add (EV_P_ ev_stat *w) 2998infy_add (EV_P_ ev_stat *w)
2443{ 2999{
2444 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3000 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2445 3001
2446 if (w->wd < 0) 3002 if (w->wd >= 0)
3003 {
3004 struct statfs sfs;
3005
3006 /* now local changes will be tracked by inotify, but remote changes won't */
3007 /* unless the filesystem is known to be local, we therefore still poll */
3008 /* also do poll on <2.6.25, but with normal frequency */
3009
3010 if (!fs_2625)
3011 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3012 else if (!statfs (w->path, &sfs)
3013 && (sfs.f_type == 0x1373 /* devfs */
3014 || sfs.f_type == 0xEF53 /* ext2/3 */
3015 || sfs.f_type == 0x3153464a /* jfs */
3016 || sfs.f_type == 0x52654973 /* reiser3 */
3017 || sfs.f_type == 0x01021994 /* tempfs */
3018 || sfs.f_type == 0x58465342 /* xfs */))
3019 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3020 else
3021 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2447 { 3022 }
2448 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3023 else
3024 {
3025 /* can't use inotify, continue to stat */
3026 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2449 3027
2450 /* monitor some parent directory for speedup hints */ 3028 /* if path is not there, monitor some parent directory for speedup hints */
2451 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3029 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2452 /* but an efficiency issue only */ 3030 /* but an efficiency issue only */
2453 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3031 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2454 { 3032 {
2455 char path [4096]; 3033 char path [4096];
2456 strcpy (path, w->path); 3034 strcpy (path, w->path);
… …
2460 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3038 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2461 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3039 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2462 3040
2463 char *pend = strrchr (path, '/'); 3041 char *pend = strrchr (path, '/');
2464 3042
2465 if (!pend) 3043 if (!pend || pend == path)
2466 break; /* whoops, no '/', complain to your admin */ 3044 break;
2467 3045
2468 *pend = 0; 3046 *pend = 0;
2469 w->wd = inotify_add_watch (fs_fd, path, mask); 3047 w->wd = inotify_add_watch (fs_fd, path, mask);
2470 } 3048 }
2471 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3049 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2472 } 3050 }
2473 } 3051 }
2474 else
2475 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2476 3052
2477 if (w->wd >= 0) 3053 if (w->wd >= 0)
2478 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3054 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3055
3056 /* now re-arm timer, if required */
3057 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3058 ev_timer_again (EV_A_ &w->timer);
3059 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2479} 3060}
2480 3061
2481static void noinline 3062static void noinline
2482infy_del (EV_P_ ev_stat *w) 3063infy_del (EV_P_ ev_stat *w)
2483{ 3064{
… …
2486 3067
2487 if (wd < 0) 3068 if (wd < 0)
2488 return; 3069 return;
2489 3070
2490 w->wd = -2; 3071 w->wd = -2;
2491 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3072 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2492 wlist_del (&fs_hash [slot].head, (WL)w); 3073 wlist_del (&fs_hash [slot].head, (WL)w);
2493 3074
2494 /* remove this watcher, if others are watching it, they will rearm */ 3075 /* remove this watcher, if others are watching it, they will rearm */
2495 inotify_rm_watch (fs_fd, wd); 3076 inotify_rm_watch (fs_fd, wd);
2496} 3077}
… …
2498static void noinline 3079static void noinline
2499infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3080infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2500{ 3081{
2501 if (slot < 0) 3082 if (slot < 0)
2502 /* overflow, need to check for all hash slots */ 3083 /* overflow, need to check for all hash slots */
2503 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3084 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2504 infy_wd (EV_A_ slot, wd, ev); 3085 infy_wd (EV_A_ slot, wd, ev);
2505 else 3086 else
2506 { 3087 {
2507 WL w_; 3088 WL w_;
2508 3089
2509 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3090 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2510 { 3091 {
2511 ev_stat *w = (ev_stat *)w_; 3092 ev_stat *w = (ev_stat *)w_;
2512 w_ = w_->next; /* lets us remove this watcher and all before it */ 3093 w_ = w_->next; /* lets us remove this watcher and all before it */
2513 3094
2514 if (w->wd == wd || wd == -1) 3095 if (w->wd == wd || wd == -1)
2515 { 3096 {
2516 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3097 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2517 { 3098 {
3099 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2518 w->wd = -1; 3100 w->wd = -1;
2519 infy_add (EV_A_ w); /* re-add, no matter what */ 3101 infy_add (EV_A_ w); /* re-add, no matter what */
2520 } 3102 }
2521 3103
2522 stat_timer_cb (EV_A_ &w->timer, 0); 3104 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2527 3109
2528static void 3110static void
2529infy_cb (EV_P_ ev_io *w, int revents) 3111infy_cb (EV_P_ ev_io *w, int revents)
2530{ 3112{
2531 char buf [EV_INOTIFY_BUFSIZE]; 3113 char buf [EV_INOTIFY_BUFSIZE];
2532 struct inotify_event *ev = (struct inotify_event *)buf;
2533 int ofs; 3114 int ofs;
2534 int len = read (fs_fd, buf, sizeof (buf)); 3115 int len = read (fs_fd, buf, sizeof (buf));
2535 3116
2536 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3117 for (ofs = 0; ofs < len; )
3118 {
3119 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2537 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3120 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3121 ofs += sizeof (struct inotify_event) + ev->len;
3122 }
2538} 3123}
2539 3124
2540void inline_size 3125inline_size void
2541infy_init (EV_P) 3126ev_check_2625 (EV_P)
2542{ 3127{
2543 if (fs_fd != -2)
2544 return;
2545
2546 /* kernels < 2.6.25 are borked 3128 /* kernels < 2.6.25 are borked
2547 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3129 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2548 */ 3130 */
2549 { 3131 if (ev_linux_version () < 0x020619)
2550 struct utsname buf; 3132 return;
2551 int major, minor, micro;
2552 3133
3134 fs_2625 = 1;
3135}
3136
3137inline_size int
3138infy_newfd (void)
3139{
3140#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3141 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3142 if (fd >= 0)
3143 return fd;
3144#endif
3145 return inotify_init ();
3146}
3147
3148inline_size void
3149infy_init (EV_P)
3150{
3151 if (fs_fd != -2)
3152 return;
3153
2553 fs_fd = -1; 3154 fs_fd = -1;
2554 3155
2555 if (uname (&buf)) 3156 ev_check_2625 (EV_A);
2556 return;
2557 3157
2558 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2559 return;
2560
2561 if (major < 2
2562 || (major == 2 && minor < 6)
2563 || (major == 2 && minor == 6 && micro < 25))
2564 return;
2565 }
2566
2567 fs_fd = inotify_init (); 3158 fs_fd = infy_newfd ();
2568 3159
2569 if (fs_fd >= 0) 3160 if (fs_fd >= 0)
2570 { 3161 {
3162 fd_intern (fs_fd);
2571 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3163 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2572 ev_set_priority (&fs_w, EV_MAXPRI); 3164 ev_set_priority (&fs_w, EV_MAXPRI);
2573 ev_io_start (EV_A_ &fs_w); 3165 ev_io_start (EV_A_ &fs_w);
3166 ev_unref (EV_A);
2574 } 3167 }
2575} 3168}
2576 3169
2577void inline_size 3170inline_size void
2578infy_fork (EV_P) 3171infy_fork (EV_P)
2579{ 3172{
2580 int slot; 3173 int slot;
2581 3174
2582 if (fs_fd < 0) 3175 if (fs_fd < 0)
2583 return; 3176 return;
2584 3177
3178 ev_ref (EV_A);
3179 ev_io_stop (EV_A_ &fs_w);
2585 close (fs_fd); 3180 close (fs_fd);
2586 fs_fd = inotify_init (); 3181 fs_fd = infy_newfd ();
2587 3182
3183 if (fs_fd >= 0)
3184 {
3185 fd_intern (fs_fd);
3186 ev_io_set (&fs_w, fs_fd, EV_READ);
3187 ev_io_start (EV_A_ &fs_w);
3188 ev_unref (EV_A);
3189 }
3190
2588 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3191 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2589 { 3192 {
2590 WL w_ = fs_hash [slot].head; 3193 WL w_ = fs_hash [slot].head;
2591 fs_hash [slot].head = 0; 3194 fs_hash [slot].head = 0;
2592 3195
2593 while (w_) 3196 while (w_)
… …
2598 w->wd = -1; 3201 w->wd = -1;
2599 3202
2600 if (fs_fd >= 0) 3203 if (fs_fd >= 0)
2601 infy_add (EV_A_ w); /* re-add, no matter what */ 3204 infy_add (EV_A_ w); /* re-add, no matter what */
2602 else 3205 else
3206 {
3207 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3208 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2603 ev_timer_start (EV_A_ &w->timer); 3209 ev_timer_again (EV_A_ &w->timer);
3210 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3211 }
2604 } 3212 }
2605 } 3213 }
2606} 3214}
2607 3215
2608#endif 3216#endif
… …
2625static void noinline 3233static void noinline
2626stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3234stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2627{ 3235{
2628 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3236 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2629 3237
2630 /* we copy this here each the time so that */ 3238 ev_statdata prev = w->attr;
2631 /* prev has the old value when the callback gets invoked */
2632 w->prev = w->attr;
2633 ev_stat_stat (EV_A_ w); 3239 ev_stat_stat (EV_A_ w);
2634 3240
2635 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3241 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2636 if ( 3242 if (
2637 w->prev.st_dev != w->attr.st_dev 3243 prev.st_dev != w->attr.st_dev
2638 || w->prev.st_ino != w->attr.st_ino 3244 || prev.st_ino != w->attr.st_ino
2639 || w->prev.st_mode != w->attr.st_mode 3245 || prev.st_mode != w->attr.st_mode
2640 || w->prev.st_nlink != w->attr.st_nlink 3246 || prev.st_nlink != w->attr.st_nlink
2641 || w->prev.st_uid != w->attr.st_uid 3247 || prev.st_uid != w->attr.st_uid
2642 || w->prev.st_gid != w->attr.st_gid 3248 || prev.st_gid != w->attr.st_gid
2643 || w->prev.st_rdev != w->attr.st_rdev 3249 || prev.st_rdev != w->attr.st_rdev
2644 || w->prev.st_size != w->attr.st_size 3250 || prev.st_size != w->attr.st_size
2645 || w->prev.st_atime != w->attr.st_atime 3251 || prev.st_atime != w->attr.st_atime
2646 || w->prev.st_mtime != w->attr.st_mtime 3252 || prev.st_mtime != w->attr.st_mtime
2647 || w->prev.st_ctime != w->attr.st_ctime 3253 || prev.st_ctime != w->attr.st_ctime
2648 ) { 3254 ) {
3255 /* we only update w->prev on actual differences */
3256 /* in case we test more often than invoke the callback, */
3257 /* to ensure that prev is always different to attr */
3258 w->prev = prev;
3259
2649 #if EV_USE_INOTIFY 3260 #if EV_USE_INOTIFY
2650 if (fs_fd >= 0) 3261 if (fs_fd >= 0)
2651 { 3262 {
2652 infy_del (EV_A_ w); 3263 infy_del (EV_A_ w);
2653 infy_add (EV_A_ w); 3264 infy_add (EV_A_ w);
… …
2663ev_stat_start (EV_P_ ev_stat *w) 3274ev_stat_start (EV_P_ ev_stat *w)
2664{ 3275{
2665 if (expect_false (ev_is_active (w))) 3276 if (expect_false (ev_is_active (w)))
2666 return; 3277 return;
2667 3278
2668 /* since we use memcmp, we need to clear any padding data etc. */
2669 memset (&w->prev, 0, sizeof (ev_statdata));
2670 memset (&w->attr, 0, sizeof (ev_statdata));
2671
2672 ev_stat_stat (EV_A_ w); 3279 ev_stat_stat (EV_A_ w);
2673 3280
3281 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2674 if (w->interval < MIN_STAT_INTERVAL) 3282 w->interval = MIN_STAT_INTERVAL;
2675 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2676 3283
2677 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3284 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2678 ev_set_priority (&w->timer, ev_priority (w)); 3285 ev_set_priority (&w->timer, ev_priority (w));
2679 3286
2680#if EV_USE_INOTIFY 3287#if EV_USE_INOTIFY
2681 infy_init (EV_A); 3288 infy_init (EV_A);
2682 3289
2683 if (fs_fd >= 0) 3290 if (fs_fd >= 0)
2684 infy_add (EV_A_ w); 3291 infy_add (EV_A_ w);
2685 else 3292 else
2686#endif 3293#endif
3294 {
2687 ev_timer_start (EV_A_ &w->timer); 3295 ev_timer_again (EV_A_ &w->timer);
3296 ev_unref (EV_A);
3297 }
2688 3298
2689 ev_start (EV_A_ (W)w, 1); 3299 ev_start (EV_A_ (W)w, 1);
2690 3300
2691 EV_FREQUENT_CHECK; 3301 EV_FREQUENT_CHECK;
2692} 3302}
… …
2701 EV_FREQUENT_CHECK; 3311 EV_FREQUENT_CHECK;
2702 3312
2703#if EV_USE_INOTIFY 3313#if EV_USE_INOTIFY
2704 infy_del (EV_A_ w); 3314 infy_del (EV_A_ w);
2705#endif 3315#endif
3316
3317 if (ev_is_active (&w->timer))
3318 {
3319 ev_ref (EV_A);
2706 ev_timer_stop (EV_A_ &w->timer); 3320 ev_timer_stop (EV_A_ &w->timer);
3321 }
2707 3322
2708 ev_stop (EV_A_ (W)w); 3323 ev_stop (EV_A_ (W)w);
2709 3324
2710 EV_FREQUENT_CHECK; 3325 EV_FREQUENT_CHECK;
2711} 3326}
… …
2756 3371
2757 EV_FREQUENT_CHECK; 3372 EV_FREQUENT_CHECK;
2758} 3373}
2759#endif 3374#endif
2760 3375
3376#if EV_PREPARE_ENABLE
2761void 3377void
2762ev_prepare_start (EV_P_ ev_prepare *w) 3378ev_prepare_start (EV_P_ ev_prepare *w)
2763{ 3379{
2764 if (expect_false (ev_is_active (w))) 3380 if (expect_false (ev_is_active (w)))
2765 return; 3381 return;
… …
2791 3407
2792 ev_stop (EV_A_ (W)w); 3408 ev_stop (EV_A_ (W)w);
2793 3409
2794 EV_FREQUENT_CHECK; 3410 EV_FREQUENT_CHECK;
2795} 3411}
3412#endif
2796 3413
3414#if EV_CHECK_ENABLE
2797void 3415void
2798ev_check_start (EV_P_ ev_check *w) 3416ev_check_start (EV_P_ ev_check *w)
2799{ 3417{
2800 if (expect_false (ev_is_active (w))) 3418 if (expect_false (ev_is_active (w)))
2801 return; 3419 return;
… …
2827 3445
2828 ev_stop (EV_A_ (W)w); 3446 ev_stop (EV_A_ (W)w);
2829 3447
2830 EV_FREQUENT_CHECK; 3448 EV_FREQUENT_CHECK;
2831} 3449}
3450#endif
2832 3451
2833#if EV_EMBED_ENABLE 3452#if EV_EMBED_ENABLE
2834void noinline 3453void noinline
2835ev_embed_sweep (EV_P_ ev_embed *w) 3454ev_embed_sweep (EV_P_ ev_embed *w)
2836{ 3455{
2837 ev_loop (w->other, EVLOOP_NONBLOCK); 3456 ev_run (w->other, EVRUN_NOWAIT);
2838} 3457}
2839 3458
2840static void 3459static void
2841embed_io_cb (EV_P_ ev_io *io, int revents) 3460embed_io_cb (EV_P_ ev_io *io, int revents)
2842{ 3461{
2843 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3462 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2844 3463
2845 if (ev_cb (w)) 3464 if (ev_cb (w))
2846 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3465 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2847 else 3466 else
2848 ev_loop (w->other, EVLOOP_NONBLOCK); 3467 ev_run (w->other, EVRUN_NOWAIT);
2849} 3468}
2850 3469
2851static void 3470static void
2852embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3471embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2853{ 3472{
2854 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3473 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2855 3474
2856 { 3475 {
2857 struct ev_loop *loop = w->other; 3476 EV_P = w->other;
2858 3477
2859 while (fdchangecnt) 3478 while (fdchangecnt)
2860 { 3479 {
2861 fd_reify (EV_A); 3480 fd_reify (EV_A);
2862 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3481 ev_run (EV_A_ EVRUN_NOWAIT);
2863 } 3482 }
2864 } 3483 }
2865} 3484}
2866 3485
2867static void 3486static void
2868embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3487embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2869{ 3488{
2870 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3489 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2871 3490
3491 ev_embed_stop (EV_A_ w);
3492
2872 { 3493 {
2873 struct ev_loop *loop = w->other; 3494 EV_P = w->other;
2874 3495
2875 ev_loop_fork (EV_A); 3496 ev_loop_fork (EV_A);
3497 ev_run (EV_A_ EVRUN_NOWAIT);
2876 } 3498 }
3499
3500 ev_embed_start (EV_A_ w);
2877} 3501}
2878 3502
2879#if 0 3503#if 0
2880static void 3504static void
2881embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3505embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2889{ 3513{
2890 if (expect_false (ev_is_active (w))) 3514 if (expect_false (ev_is_active (w)))
2891 return; 3515 return;
2892 3516
2893 { 3517 {
2894 struct ev_loop *loop = w->other; 3518 EV_P = w->other;
2895 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3519 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2896 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3520 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2897 } 3521 }
2898 3522
2899 EV_FREQUENT_CHECK; 3523 EV_FREQUENT_CHECK;
2900 3524
… …
2926 3550
2927 ev_io_stop (EV_A_ &w->io); 3551 ev_io_stop (EV_A_ &w->io);
2928 ev_prepare_stop (EV_A_ &w->prepare); 3552 ev_prepare_stop (EV_A_ &w->prepare);
2929 ev_fork_stop (EV_A_ &w->fork); 3553 ev_fork_stop (EV_A_ &w->fork);
2930 3554
3555 ev_stop (EV_A_ (W)w);
3556
2931 EV_FREQUENT_CHECK; 3557 EV_FREQUENT_CHECK;
2932} 3558}
2933#endif 3559#endif
2934 3560
2935#if EV_FORK_ENABLE 3561#if EV_FORK_ENABLE
… …
2968 3594
2969 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
2970} 3596}
2971#endif 3597#endif
2972 3598
2973#if EV_ASYNC_ENABLE 3599#if EV_CLEANUP_ENABLE
2974void 3600void
2975ev_async_start (EV_P_ ev_async *w) 3601ev_cleanup_start (EV_P_ ev_cleanup *w)
2976{ 3602{
2977 if (expect_false (ev_is_active (w))) 3603 if (expect_false (ev_is_active (w)))
2978 return; 3604 return;
3605
3606 EV_FREQUENT_CHECK;
3607
3608 ev_start (EV_A_ (W)w, ++cleanupcnt);
3609 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3610 cleanups [cleanupcnt - 1] = w;
3611
3612 /* cleanup watchers should never keep a refcount on the loop */
3613 ev_unref (EV_A);
3614 EV_FREQUENT_CHECK;
3615}
3616
3617void
3618ev_cleanup_stop (EV_P_ ev_cleanup *w)
3619{
3620 clear_pending (EV_A_ (W)w);
3621 if (expect_false (!ev_is_active (w)))
3622 return;
3623
3624 EV_FREQUENT_CHECK;
3625 ev_ref (EV_A);
3626
3627 {
3628 int active = ev_active (w);
3629
3630 cleanups [active - 1] = cleanups [--cleanupcnt];
3631 ev_active (cleanups [active - 1]) = active;
3632 }
3633
3634 ev_stop (EV_A_ (W)w);
3635
3636 EV_FREQUENT_CHECK;
3637}
3638#endif
3639
3640#if EV_ASYNC_ENABLE
3641void
3642ev_async_start (EV_P_ ev_async *w)
3643{
3644 if (expect_false (ev_is_active (w)))
3645 return;
3646
3647 w->sent = 0;
2979 3648
2980 evpipe_init (EV_A); 3649 evpipe_init (EV_A);
2981 3650
2982 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
2983 3652
… …
3011 3680
3012void 3681void
3013ev_async_send (EV_P_ ev_async *w) 3682ev_async_send (EV_P_ ev_async *w)
3014{ 3683{
3015 w->sent = 1; 3684 w->sent = 1;
3016 evpipe_write (EV_A_ &gotasync); 3685 evpipe_write (EV_A_ &async_pending);
3017} 3686}
3018#endif 3687#endif
3019 3688
3020/*****************************************************************************/ 3689/*****************************************************************************/
3021 3690
… …
3061{ 3730{
3062 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3731 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3063 3732
3064 if (expect_false (!once)) 3733 if (expect_false (!once))
3065 { 3734 {
3066 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3735 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3067 return; 3736 return;
3068 } 3737 }
3069 3738
3070 once->cb = cb; 3739 once->cb = cb;
3071 once->arg = arg; 3740 once->arg = arg;
… …
3083 ev_timer_set (&once->to, timeout, 0.); 3752 ev_timer_set (&once->to, timeout, 0.);
3084 ev_timer_start (EV_A_ &once->to); 3753 ev_timer_start (EV_A_ &once->to);
3085 } 3754 }
3086} 3755}
3087 3756
3757/*****************************************************************************/
3758
3759#if EV_WALK_ENABLE
3760void
3761ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3762{
3763 int i, j;
3764 ev_watcher_list *wl, *wn;
3765
3766 if (types & (EV_IO | EV_EMBED))
3767 for (i = 0; i < anfdmax; ++i)
3768 for (wl = anfds [i].head; wl; )
3769 {
3770 wn = wl->next;
3771
3772#if EV_EMBED_ENABLE
3773 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3774 {
3775 if (types & EV_EMBED)
3776 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3777 }
3778 else
3779#endif
3780#if EV_USE_INOTIFY
3781 if (ev_cb ((ev_io *)wl) == infy_cb)
3782 ;
3783 else
3784#endif
3785 if ((ev_io *)wl != &pipe_w)
3786 if (types & EV_IO)
3787 cb (EV_A_ EV_IO, wl);
3788
3789 wl = wn;
3790 }
3791
3792 if (types & (EV_TIMER | EV_STAT))
3793 for (i = timercnt + HEAP0; i-- > HEAP0; )
3794#if EV_STAT_ENABLE
3795 /*TODO: timer is not always active*/
3796 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3797 {
3798 if (types & EV_STAT)
3799 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3800 }
3801 else
3802#endif
3803 if (types & EV_TIMER)
3804 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3805
3806#if EV_PERIODIC_ENABLE
3807 if (types & EV_PERIODIC)
3808 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3809 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3810#endif
3811
3812#if EV_IDLE_ENABLE
3813 if (types & EV_IDLE)
3814 for (j = NUMPRI; i--; )
3815 for (i = idlecnt [j]; i--; )
3816 cb (EV_A_ EV_IDLE, idles [j][i]);
3817#endif
3818
3819#if EV_FORK_ENABLE
3820 if (types & EV_FORK)
3821 for (i = forkcnt; i--; )
3822 if (ev_cb (forks [i]) != embed_fork_cb)
3823 cb (EV_A_ EV_FORK, forks [i]);
3824#endif
3825
3826#if EV_ASYNC_ENABLE
3827 if (types & EV_ASYNC)
3828 for (i = asynccnt; i--; )
3829 cb (EV_A_ EV_ASYNC, asyncs [i]);
3830#endif
3831
3832#if EV_PREPARE_ENABLE
3833 if (types & EV_PREPARE)
3834 for (i = preparecnt; i--; )
3835# if EV_EMBED_ENABLE
3836 if (ev_cb (prepares [i]) != embed_prepare_cb)
3837# endif
3838 cb (EV_A_ EV_PREPARE, prepares [i]);
3839#endif
3840
3841#if EV_CHECK_ENABLE
3842 if (types & EV_CHECK)
3843 for (i = checkcnt; i--; )
3844 cb (EV_A_ EV_CHECK, checks [i]);
3845#endif
3846
3847#if EV_SIGNAL_ENABLE
3848 if (types & EV_SIGNAL)
3849 for (i = 0; i < EV_NSIG - 1; ++i)
3850 for (wl = signals [i].head; wl; )
3851 {
3852 wn = wl->next;
3853 cb (EV_A_ EV_SIGNAL, wl);
3854 wl = wn;
3855 }
3856#endif
3857
3858#if EV_CHILD_ENABLE
3859 if (types & EV_CHILD)
3860 for (i = (EV_PID_HASHSIZE); i--; )
3861 for (wl = childs [i]; wl; )
3862 {
3863 wn = wl->next;
3864 cb (EV_A_ EV_CHILD, wl);
3865 wl = wn;
3866 }
3867#endif
3868/* EV_STAT 0x00001000 /* stat data changed */
3869/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3870}
3871#endif
3872
3088#if EV_MULTIPLICITY 3873#if EV_MULTIPLICITY
3089 #include "ev_wrap.h" 3874 #include "ev_wrap.h"
3090#endif 3875#endif
3091 3876
3092#ifdef __cplusplus 3877EV_CPP(})
3093}
3094#endif
3095 3878

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