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Comparing libev/ev.c (file contents):
Revision 1.261 by root, Mon Sep 29 03:31:14 2008 UTC vs.
Revision 1.362 by root, Sun Oct 24 19:15:52 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
130# endif 157# endif
131 158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
… …
160# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 192# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
164# endif 195# endif
196# undef EV_AVOID_STDIO
165#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
166 206
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
236
237#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else
241# define EV_USE_CLOCK_SYSCALL 0
242# endif
243#endif
168 244
169#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 248# else
173# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
174# endif 250# endif
175#endif 251#endif
176 252
177#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 255#endif
180 256
181#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 260# else
185# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
186# endif 262# endif
187#endif 263#endif
188 264
189#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 267#endif
192 268
193#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
194# ifdef _WIN32 270# ifdef _WIN32
195# define EV_USE_POLL 0 271# define EV_USE_POLL 0
196# else 272# else
197# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 274# endif
199#endif 275#endif
200 276
201#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 280# else
205# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
206# endif 282# endif
207#endif 283#endif
208 284
… …
214# define EV_USE_PORT 0 290# define EV_USE_PORT 0
215#endif 291#endif
216 292
217#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 296# else
221# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
222# endif 298# endif
223#endif 299#endif
224 300
225#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 303#endif
232 304
233#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 307#endif
240 308
241#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 312# else
245# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
314# endif
315#endif
316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
246# endif 322# endif
247#endif 323#endif
248 324
249#if 0 /* debugging */ 325#if 0 /* debugging */
250# define EV_VERIFY 3 326# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
253#endif 329#endif
254 330
255#ifndef EV_VERIFY 331#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 333#endif
258 334
259#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 337#endif
262 338
263#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
265#endif 355#endif
266 356
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
268 364
269#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
272#endif 368#endif
… …
286# include <sys/select.h> 382# include <sys/select.h>
287# endif 383# endif
288#endif 384#endif
289 385
290#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/statfs.h>
291# include <sys/inotify.h> 388# include <sys/inotify.h>
389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
390# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0
393# endif
292#endif 394#endif
293 395
294#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
295# include <winsock.h> 397# include <winsock.h>
296#endif 398#endif
297 399
298#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
299/* 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 */
300# include <stdint.h> 402# include <stdint.h>
301# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
302extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
303# endif 405# endif
304int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
305# ifdef __cplusplus 407# ifdef O_CLOEXEC
306} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
307# 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};
308#endif 436#endif
309 437
310/**/ 438/**/
311 439
312#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
313# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
314#else 442#else
315# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
316#endif 444#endif
317 445
318/* 446/*
… …
325 */ 453 */
326#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
327 455
328#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) */
329#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) */
330/*#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)
331 461
332#if __GNUC__ >= 4 462#if __GNUC__ >= 4
333# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
334# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
335#else 465#else
… …
342 472
343#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
344#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
345#define inline_size static inline 475#define inline_size static inline
346 476
347#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
348# 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)
349#else 487#else
350# define inline_speed static inline
351#endif
352
353#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
354#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
355 490
356#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
357#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
358 493
359typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
361typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
362 497
363#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
364#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
365 500
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
366#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
367/* sig_atomic_t is used to avoid per-thread variables or locking but still */
368/* giving it a reasonably high chance of working on typical architetcures */
369static 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)
370#endif 519#endif
371 520
372#ifdef _WIN32 521#ifdef _WIN32
373# include "ev_win32.c" 522# include "ev_win32.c"
374#endif 523#endif
375 524
376/*****************************************************************************/ 525/*****************************************************************************/
377 526
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
378static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
379 578
380void 579void
381ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
382{ 581{
383 syserr_cb = cb; 582 syserr_cb = cb;
384} 583}
385 584
386static void noinline 585static void noinline
387syserr (const char *msg) 586ev_syserr (const char *msg)
388{ 587{
389 if (!msg) 588 if (!msg)
390 msg = "(libev) system error"; 589 msg = "(libev) system error";
391 590
392 if (syserr_cb) 591 if (syserr_cb)
393 syserr_cb (msg); 592 syserr_cb (msg);
394 else 593 else
395 { 594 {
595#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg);
599 ev_printerr (": ");
600 ev_printerr (err);
601 ev_printerr ("\n");
602#else
396 perror (msg); 603 perror (msg);
604#endif
397 abort (); 605 abort ();
398 } 606 }
399} 607}
400 608
401static void * 609static void *
402ev_realloc_emul (void *ptr, long size) 610ev_realloc_emul (void *ptr, long size)
403{ 611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
404 /* some systems, notably openbsd and darwin, fail to properly 615 /* some systems, notably openbsd and darwin, fail to properly
405 * implement realloc (x, 0) (as required by both ansi c-98 and 616 * implement realloc (x, 0) (as required by both ansi c-89 and
406 * the single unix specification, so work around them here. 617 * the single unix specification, so work around them here.
407 */ 618 */
408 619
409 if (size) 620 if (size)
410 return realloc (ptr, size); 621 return realloc (ptr, size);
411 622
412 free (ptr); 623 free (ptr);
413 return 0; 624 return 0;
625#endif
414} 626}
415 627
416static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
417 629
418void 630void
… …
426{ 638{
427 ptr = alloc (ptr, size); 639 ptr = alloc (ptr, size);
428 640
429 if (!ptr && size) 641 if (!ptr && size)
430 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
431 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
432 abort (); 648 abort ();
433 } 649 }
434 650
435 return ptr; 651 return ptr;
436} 652}
… …
438#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
439#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
440 656
441/*****************************************************************************/ 657/*****************************************************************************/
442 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
443typedef struct 663typedef struct
444{ 664{
445 WL head; 665 WL head;
446 unsigned char events; 666 unsigned char events; /* the events watched for */
667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
447 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
448#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
449 SOCKET handle; 674 SOCKET handle;
450#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
451} ANFD; 679} ANFD;
452 680
681/* stores the pending event set for a given watcher */
453typedef struct 682typedef struct
454{ 683{
455 W w; 684 W w;
456 int events; 685 int events; /* the pending event set for the given watcher */
457} ANPENDING; 686} ANPENDING;
458 687
459#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
460/* hash table entry per inotify-id */ 689/* hash table entry per inotify-id */
461typedef struct 690typedef struct
… …
464} ANFS; 693} ANFS;
465#endif 694#endif
466 695
467/* Heap Entry */ 696/* Heap Entry */
468#if EV_HEAP_CACHE_AT 697#if EV_HEAP_CACHE_AT
698 /* a heap element */
469 typedef struct { 699 typedef struct {
470 ev_tstamp at; 700 ev_tstamp at;
471 WT w; 701 WT w;
472 } ANHE; 702 } ANHE;
473 703
474 #define ANHE_w(he) (he).w /* access watcher, read-write */ 704 #define ANHE_w(he) (he).w /* access watcher, read-write */
475 #define ANHE_at(he) (he).at /* access cached at, read-only */ 705 #define ANHE_at(he) (he).at /* access cached at, read-only */
476 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
477#else 707#else
708 /* a heap element */
478 typedef WT ANHE; 709 typedef WT ANHE;
479 710
480 #define ANHE_w(he) (he) 711 #define ANHE_w(he) (he)
481 #define ANHE_at(he) (he)->at 712 #define ANHE_at(he) (he)->at
482 #define ANHE_at_cache(he) 713 #define ANHE_at_cache(he)
… …
506 737
507 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
508 739
509#endif 740#endif
510 741
742#if EV_FEATURE_API
743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
745# define EV_INVOKE_PENDING invoke_cb (EV_A)
746#else
747# define EV_RELEASE_CB (void)0
748# define EV_ACQUIRE_CB (void)0
749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
750#endif
751
752#define EVBREAK_RECURSE 0x80
753
511/*****************************************************************************/ 754/*****************************************************************************/
512 755
756#ifndef EV_HAVE_EV_TIME
513ev_tstamp 757ev_tstamp
514ev_time (void) 758ev_time (void)
515{ 759{
516#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
517 struct timespec ts; 763 struct timespec ts;
518 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
519 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
520#else 766 }
767#endif
768
521 struct timeval tv; 769 struct timeval tv;
522 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
523 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
524#endif
525} 772}
773#endif
526 774
527ev_tstamp inline_size 775inline_size ev_tstamp
528get_clock (void) 776get_clock (void)
529{ 777{
530#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
531 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
532 { 780 {
… …
553 if (delay > 0.) 801 if (delay > 0.)
554 { 802 {
555#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
556 struct timespec ts; 804 struct timespec ts;
557 805
558 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
559 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
560
561 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
562#elif defined(_WIN32) 808#elif defined(_WIN32)
563 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
564#else 810#else
565 struct timeval tv; 811 struct timeval tv;
566 812
567 tv.tv_sec = (time_t)delay;
568 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
569
570 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
571 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 814 /* something not guaranteed by newer posix versions, but guaranteed */
572 /* by older ones */ 815 /* by older ones */
816 EV_TV_SET (tv, delay);
573 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
574#endif 818#endif
575 } 819 }
576} 820}
577 821
578/*****************************************************************************/ 822/*****************************************************************************/
579 823
580#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
581 825
582int inline_size 826/* find a suitable new size for the given array, */
827/* hopefully by rounding to a nice-to-malloc size */
828inline_size int
583array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
584{ 830{
585 int ncur = cur + 1; 831 int ncur = cur + 1;
586 832
587 do 833 do
… …
604array_realloc (int elem, void *base, int *cur, int cnt) 850array_realloc (int elem, void *base, int *cur, int cnt)
605{ 851{
606 *cur = array_nextsize (elem, *cur, cnt); 852 *cur = array_nextsize (elem, *cur, cnt);
607 return ev_realloc (base, elem * *cur); 853 return ev_realloc (base, elem * *cur);
608} 854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
609 858
610#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
611 if (expect_false ((cnt) > (cur))) \ 860 if (expect_false ((cnt) > (cur))) \
612 { \ 861 { \
613 int ocur_ = (cur); \ 862 int ocur_ = (cur); \
… …
625 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626 } 875 }
627#endif 876#endif
628 877
629#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
630 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
631 880
632/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
633 888
634void noinline 889void noinline
635ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
636{ 891{
637 W w_ = (W)w; 892 W w_ = (W)w;
… …
646 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
647 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
648 } 903 }
649} 904}
650 905
651void inline_speed 906inline_speed void
907feed_reverse (EV_P_ W w)
908{
909 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
910 rfeeds [rfeedcnt++] = w;
911}
912
913inline_size void
914feed_reverse_done (EV_P_ int revents)
915{
916 do
917 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
918 while (rfeedcnt);
919}
920
921inline_speed void
652queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
653{ 923{
654 int i; 924 int i;
655 925
656 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
657 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
658} 928}
659 929
660/*****************************************************************************/ 930/*****************************************************************************/
661 931
662void inline_size 932inline_speed void
663anfds_init (ANFD *base, int count)
664{
665 while (count--)
666 {
667 base->head = 0;
668 base->events = EV_NONE;
669 base->reify = 0;
670
671 ++base;
672 }
673}
674
675void inline_speed
676fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
677{ 934{
678 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
679 ev_io *w; 936 ev_io *w;
680 937
681 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
685 if (ev) 942 if (ev)
686 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
687 } 944 }
688} 945}
689 946
947/* do not submit kernel events for fds that have reify set */
948/* because that means they changed while we were polling for new events */
949inline_speed void
950fd_event (EV_P_ int fd, int revents)
951{
952 ANFD *anfd = anfds + fd;
953
954 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents);
956}
957
690void 958void
691ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
692{ 960{
693 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
694 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
695} 963}
696 964
697void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
698fd_reify (EV_P) 968fd_reify (EV_P)
699{ 969{
700 int i; 970 int i;
701 971
702 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
703 { 973 {
704 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
705 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
706 ev_io *w; 976 ev_io *w;
707 977
708 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
709 980
710 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
711 events |= (unsigned char)w->events;
712 982
713#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
714 if (events) 984 if (o_reify & EV__IOFDSET)
715 { 985 {
716 unsigned long arg; 986 unsigned long arg;
717 #ifdef EV_FD_TO_WIN32_HANDLE
718 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
719 #else
720 anfd->handle = _get_osfhandle (fd);
721 #endif
722 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
723 } 990 }
724#endif 991#endif
725 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
726 { 994 {
727 unsigned char o_events = anfd->events;
728 unsigned char o_reify = anfd->reify;
729
730 anfd->reify = 0;
731 anfd->events = events; 995 anfd->events = 0;
732 996
733 if (o_events != events || o_reify & EV_IOFDSET) 997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
734 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
735 }
736 } 1006 }
737 1007
738 fdchangecnt = 0; 1008 fdchangecnt = 0;
739} 1009}
740 1010
741void inline_size 1011/* something about the given fd changed */
1012inline_size void
742fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
743{ 1014{
744 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
745 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
746 1017
… …
750 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
752 } 1023 }
753} 1024}
754 1025
755void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
756fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
757{ 1029{
758 ev_io *w; 1030 ev_io *w;
759 1031
760 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
762 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
763 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
764 } 1036 }
765} 1037}
766 1038
767int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
768fd_valid (int fd) 1041fd_valid (int fd)
769{ 1042{
770#ifdef _WIN32 1043#ifdef _WIN32
771 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
772#else 1045#else
773 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
774#endif 1047#endif
775} 1048}
776 1049
… …
794 1067
795 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
796 if (anfds [fd].events) 1069 if (anfds [fd].events)
797 { 1070 {
798 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
799 return; 1072 break;
800 } 1073 }
801} 1074}
802 1075
803/* usually called after fork if backend needs to re-arm all fds from scratch */ 1076/* usually called after fork if backend needs to re-arm all fds from scratch */
804static void noinline 1077static void noinline
… …
808 1081
809 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
810 if (anfds [fd].events) 1083 if (anfds [fd].events)
811 { 1084 {
812 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
1086 anfds [fd].emask = 0;
813 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
814 } 1088 }
815} 1089}
816 1090
1091/* used to prepare libev internal fd's */
1092/* this is not fork-safe */
1093inline_speed void
1094fd_intern (int fd)
1095{
1096#ifdef _WIN32
1097 unsigned long arg = 1;
1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1099#else
1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
1101 fcntl (fd, F_SETFL, O_NONBLOCK);
1102#endif
1103}
1104
817/*****************************************************************************/ 1105/*****************************************************************************/
818 1106
819/* 1107/*
820 * the heap functions want a real array index. array index 0 uis guaranteed to not 1108 * the heap functions want a real array index. array index 0 is guaranteed to not
821 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
822 * the branching factor of the d-tree. 1110 * the branching factor of the d-tree.
823 */ 1111 */
824 1112
825/* 1113/*
… …
834#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836#define UPHEAP_DONE(p,k) ((p) == (k)) 1124#define UPHEAP_DONE(p,k) ((p) == (k))
837 1125
838/* away from the root */ 1126/* away from the root */
839void inline_speed 1127inline_speed void
840downheap (ANHE *heap, int N, int k) 1128downheap (ANHE *heap, int N, int k)
841{ 1129{
842 ANHE he = heap [k]; 1130 ANHE he = heap [k];
843 ANHE *E = heap + N + HEAP0; 1131 ANHE *E = heap + N + HEAP0;
844 1132
… …
884#define HEAP0 1 1172#define HEAP0 1
885#define HPARENT(k) ((k) >> 1) 1173#define HPARENT(k) ((k) >> 1)
886#define UPHEAP_DONE(p,k) (!(p)) 1174#define UPHEAP_DONE(p,k) (!(p))
887 1175
888/* away from the root */ 1176/* away from the root */
889void inline_speed 1177inline_speed void
890downheap (ANHE *heap, int N, int k) 1178downheap (ANHE *heap, int N, int k)
891{ 1179{
892 ANHE he = heap [k]; 1180 ANHE he = heap [k];
893 1181
894 for (;;) 1182 for (;;)
895 { 1183 {
896 int c = k << 1; 1184 int c = k << 1;
897 1185
898 if (c > N + HEAP0 - 1) 1186 if (c >= N + HEAP0)
899 break; 1187 break;
900 1188
901 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
902 ? 1 : 0; 1190 ? 1 : 0;
903 1191
… …
914 ev_active (ANHE_w (he)) = k; 1202 ev_active (ANHE_w (he)) = k;
915} 1203}
916#endif 1204#endif
917 1205
918/* towards the root */ 1206/* towards the root */
919void inline_speed 1207inline_speed void
920upheap (ANHE *heap, int k) 1208upheap (ANHE *heap, int k)
921{ 1209{
922 ANHE he = heap [k]; 1210 ANHE he = heap [k];
923 1211
924 for (;;) 1212 for (;;)
… …
935 1223
936 heap [k] = he; 1224 heap [k] = he;
937 ev_active (ANHE_w (he)) = k; 1225 ev_active (ANHE_w (he)) = k;
938} 1226}
939 1227
940void inline_size 1228/* move an element suitably so it is in a correct place */
1229inline_size void
941adjustheap (ANHE *heap, int N, int k) 1230adjustheap (ANHE *heap, int N, int k)
942{ 1231{
943 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
944 upheap (heap, k); 1233 upheap (heap, k);
945 else 1234 else
946 downheap (heap, N, k); 1235 downheap (heap, N, k);
947} 1236}
948 1237
949/* rebuild the heap: this function is used only once and executed rarely */ 1238/* rebuild the heap: this function is used only once and executed rarely */
950void inline_size 1239inline_size void
951reheap (ANHE *heap, int N) 1240reheap (ANHE *heap, int N)
952{ 1241{
953 int i; 1242 int i;
954 1243
955 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1244 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
958 upheap (heap, i + HEAP0); 1247 upheap (heap, i + HEAP0);
959} 1248}
960 1249
961/*****************************************************************************/ 1250/*****************************************************************************/
962 1251
1252/* associate signal watchers to a signal signal */
963typedef struct 1253typedef struct
964{ 1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
965 WL head; 1259 WL head;
966 EV_ATOMIC_T gotsig;
967} ANSIG; 1260} ANSIG;
968 1261
969static ANSIG *signals; 1262static ANSIG signals [EV_NSIG - 1];
970static int signalmax;
971
972static EV_ATOMIC_T gotsig;
973
974void inline_size
975signals_init (ANSIG *base, int count)
976{
977 while (count--)
978 {
979 base->head = 0;
980 base->gotsig = 0;
981
982 ++base;
983 }
984}
985 1263
986/*****************************************************************************/ 1264/*****************************************************************************/
987 1265
988void inline_speed 1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
989fd_intern (int fd)
990{
991#ifdef _WIN32
992 unsigned long arg = 1;
993 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
994#else
995 fcntl (fd, F_SETFD, FD_CLOEXEC);
996 fcntl (fd, F_SETFL, O_NONBLOCK);
997#endif
998}
999 1267
1000static void noinline 1268static void noinline
1001evpipe_init (EV_P) 1269evpipe_init (EV_P)
1002{ 1270{
1003 if (!ev_is_active (&pipeev)) 1271 if (!ev_is_active (&pipe_w))
1004 { 1272 {
1005#if EV_USE_EVENTFD 1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
1006 if ((evfd = eventfd (0, 0)) >= 0) 1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
1007 { 1279 {
1008 evpipe [0] = -1; 1280 evpipe [0] = -1;
1009 fd_intern (evfd); 1281 fd_intern (evfd); /* doing it twice doesn't hurt */
1010 ev_io_set (&pipeev, evfd, EV_READ); 1282 ev_io_set (&pipe_w, evfd, EV_READ);
1011 } 1283 }
1012 else 1284 else
1013#endif 1285# endif
1014 { 1286 {
1015 while (pipe (evpipe)) 1287 while (pipe (evpipe))
1016 syserr ("(libev) error creating signal/async pipe"); 1288 ev_syserr ("(libev) error creating signal/async pipe");
1017 1289
1018 fd_intern (evpipe [0]); 1290 fd_intern (evpipe [0]);
1019 fd_intern (evpipe [1]); 1291 fd_intern (evpipe [1]);
1020 ev_io_set (&pipeev, evpipe [0], EV_READ); 1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1021 } 1293 }
1022 1294
1023 ev_io_start (EV_A_ &pipeev); 1295 ev_io_start (EV_A_ &pipe_w);
1024 ev_unref (EV_A); /* watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1025 } 1297 }
1026} 1298}
1027 1299
1028void inline_size 1300inline_size void
1029evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030{ 1302{
1031 if (!*flag) 1303 if (!*flag)
1032 { 1304 {
1033 int old_errno = errno; /* save errno because write might clobber it */ 1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1034 1307
1035 *flag = 1; 1308 *flag = 1;
1036 1309
1037#if EV_USE_EVENTFD 1310#if EV_USE_EVENTFD
1038 if (evfd >= 0) 1311 if (evfd >= 0)
… …
1040 uint64_t counter = 1; 1313 uint64_t counter = 1;
1041 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
1042 } 1315 }
1043 else 1316 else
1044#endif 1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1045 write (evpipe [1], &old_errno, 1); 1323 write (evpipe [1], &dummy, 1);
1046 1324
1047 errno = old_errno; 1325 errno = old_errno;
1048 } 1326 }
1049} 1327}
1050 1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
1051static void 1331static void
1052pipecb (EV_P_ ev_io *iow, int revents) 1332pipecb (EV_P_ ev_io *iow, int revents)
1053{ 1333{
1334 int i;
1335
1054#if EV_USE_EVENTFD 1336#if EV_USE_EVENTFD
1055 if (evfd >= 0) 1337 if (evfd >= 0)
1056 { 1338 {
1057 uint64_t counter; 1339 uint64_t counter;
1058 read (evfd, &counter, sizeof (uint64_t)); 1340 read (evfd, &counter, sizeof (uint64_t));
1059 } 1341 }
1060 else 1342 else
1061#endif 1343#endif
1062 { 1344 {
1063 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1064 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
1065 } 1348 }
1066 1349
1067 if (gotsig && ev_is_default_loop (EV_A)) 1350 if (sig_pending)
1068 { 1351 {
1069 int signum; 1352 sig_pending = 0;
1070 gotsig = 0;
1071 1353
1072 for (signum = signalmax; signum--; ) 1354 for (i = EV_NSIG - 1; i--; )
1073 if (signals [signum].gotsig) 1355 if (expect_false (signals [i].pending))
1074 ev_feed_signal_event (EV_A_ signum + 1); 1356 ev_feed_signal_event (EV_A_ i + 1);
1075 } 1357 }
1076 1358
1077#if EV_ASYNC_ENABLE 1359#if EV_ASYNC_ENABLE
1078 if (gotasync) 1360 if (async_pending)
1079 { 1361 {
1080 int i; 1362 async_pending = 0;
1081 gotasync = 0;
1082 1363
1083 for (i = asynccnt; i--; ) 1364 for (i = asynccnt; i--; )
1084 if (asyncs [i]->sent) 1365 if (asyncs [i]->sent)
1085 { 1366 {
1086 asyncs [i]->sent = 0; 1367 asyncs [i]->sent = 0;
… …
1094 1375
1095static void 1376static void
1096ev_sighandler (int signum) 1377ev_sighandler (int signum)
1097{ 1378{
1098#if EV_MULTIPLICITY 1379#if EV_MULTIPLICITY
1099 struct ev_loop *loop = &default_loop_struct; 1380 EV_P = signals [signum - 1].loop;
1100#endif 1381#endif
1101 1382
1102#if _WIN32 1383#ifdef _WIN32
1103 signal (signum, ev_sighandler); 1384 signal (signum, ev_sighandler);
1104#endif 1385#endif
1105 1386
1106 signals [signum - 1].gotsig = 1; 1387 signals [signum - 1].pending = 1;
1107 evpipe_write (EV_A_ &gotsig); 1388 evpipe_write (EV_A_ &sig_pending);
1108} 1389}
1109 1390
1110void noinline 1391void noinline
1111ev_feed_signal_event (EV_P_ int signum) 1392ev_feed_signal_event (EV_P_ int signum)
1112{ 1393{
1113 WL w; 1394 WL w;
1114 1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1115#if EV_MULTIPLICITY 1401#if EV_MULTIPLICITY
1116 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1402 /* it is permissible to try to feed a signal to the wrong loop */
1117#endif 1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1118 1404
1119 --signum; 1405 if (expect_false (signals [signum].loop != EV_A))
1120
1121 if (signum < 0 || signum >= signalmax)
1122 return; 1406 return;
1407#endif
1123 1408
1124 signals [signum].gotsig = 0; 1409 signals [signum].pending = 0;
1125 1410
1126 for (w = signals [signum].head; w; w = w->next) 1411 for (w = signals [signum].head; w; w = w->next)
1127 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1128} 1413}
1129 1414
1415#if EV_USE_SIGNALFD
1416static void
1417sigfdcb (EV_P_ ev_io *iow, int revents)
1418{
1419 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1420
1421 for (;;)
1422 {
1423 ssize_t res = read (sigfd, si, sizeof (si));
1424
1425 /* not ISO-C, as res might be -1, but works with SuS */
1426 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1427 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1428
1429 if (res < (ssize_t)sizeof (si))
1430 break;
1431 }
1432}
1433#endif
1434
1435#endif
1436
1130/*****************************************************************************/ 1437/*****************************************************************************/
1131 1438
1439#if EV_CHILD_ENABLE
1132static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
1133
1134#ifndef _WIN32
1135 1441
1136static ev_signal childev; 1442static ev_signal childev;
1137 1443
1138#ifndef WIFCONTINUED 1444#ifndef WIFCONTINUED
1139# define WIFCONTINUED(status) 0 1445# define WIFCONTINUED(status) 0
1140#endif 1446#endif
1141 1447
1142void inline_speed 1448/* handle a single child status event */
1449inline_speed void
1143child_reap (EV_P_ int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
1144{ 1451{
1145 ev_child *w; 1452 ev_child *w;
1146 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147 1454
1148 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1455 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1149 { 1456 {
1150 if ((w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1151 && (!traced || (w->flags & 1))) 1458 && (!traced || (w->flags & 1)))
1152 { 1459 {
1153 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1460 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1160 1467
1161#ifndef WCONTINUED 1468#ifndef WCONTINUED
1162# define WCONTINUED 0 1469# define WCONTINUED 0
1163#endif 1470#endif
1164 1471
1472/* called on sigchld etc., calls waitpid */
1165static void 1473static void
1166childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
1167{ 1475{
1168 int pid, status; 1476 int pid, status;
1169 1477
… …
1177 /* make sure we are called again until all children have been reaped */ 1485 /* make sure we are called again until all children have been reaped */
1178 /* we need to do it this way so that the callback gets called before we continue */ 1486 /* we need to do it this way so that the callback gets called before we continue */
1179 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1180 1488
1181 child_reap (EV_A_ pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1182 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
1183 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1491 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1184} 1492}
1185 1493
1186#endif 1494#endif
1187 1495
1188/*****************************************************************************/ 1496/*****************************************************************************/
1189 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1190#if EV_USE_PORT 1501#if EV_USE_PORT
1191# include "ev_port.c" 1502# include "ev_port.c"
1192#endif 1503#endif
1193#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1194# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
1250 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
1251 /* it usually doesn't work correctly on anything but sockets and pipes */ 1562 /* it usually doesn't work correctly on anything but sockets and pipes */
1252 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
1253#endif 1564#endif
1254#ifdef __APPLE__ 1565#ifdef __APPLE__
1255 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
1256 flags &= ~EVBACKEND_POLL; 1567 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1568 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1569#endif
1570#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1257#endif 1572#endif
1258 1573
1259 return flags; 1574 return flags;
1260} 1575}
1261 1576
… …
1263ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1264{ 1579{
1265 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1266 1581
1267 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1268 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1269 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1270 1585
1271 return flags; 1586 return flags;
1272} 1587}
1273 1588
1274unsigned int 1589unsigned int
1275ev_backend (EV_P) 1590ev_backend (EV_P)
1276{ 1591{
1277 return backend; 1592 return backend;
1278} 1593}
1279 1594
1595#if EV_FEATURE_API
1280unsigned int 1596unsigned int
1281ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1282{ 1598{
1283 return loop_count; 1599 return loop_count;
1284} 1600}
1285 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
1286void 1608void
1287ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1288{ 1610{
1289 io_blocktime = interval; 1611 io_blocktime = interval;
1290} 1612}
… …
1293ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1294{ 1616{
1295 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1296} 1618}
1297 1619
1620void
1621ev_set_userdata (EV_P_ void *data)
1622{
1623 userdata = data;
1624}
1625
1626void *
1627ev_userdata (EV_P)
1628{
1629 return userdata;
1630}
1631
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1633{
1634 invoke_cb = invoke_pending_cb;
1635}
1636
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1638{
1639 release_cb = release;
1640 acquire_cb = acquire;
1641}
1642#endif
1643
1644/* initialise a loop structure, must be zero-initialised */
1298static void noinline 1645static void noinline
1299loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1300{ 1647{
1301 if (!backend) 1648 if (!backend)
1302 { 1649 {
1650#if EV_USE_REALTIME
1651 if (!have_realtime)
1652 {
1653 struct timespec ts;
1654
1655 if (!clock_gettime (CLOCK_REALTIME, &ts))
1656 have_realtime = 1;
1657 }
1658#endif
1659
1303#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1304 { 1662 {
1305 struct timespec ts; 1663 struct timespec ts;
1664
1306 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307 have_monotonic = 1; 1666 have_monotonic = 1;
1308 } 1667 }
1309#endif 1668#endif
1669
1670 /* pid check not overridable via env */
1671#ifndef _WIN32
1672 if (flags & EVFLAG_FORKCHECK)
1673 curpid = getpid ();
1674#endif
1675
1676 if (!(flags & EVFLAG_NOENV)
1677 && !enable_secure ()
1678 && getenv ("LIBEV_FLAGS"))
1679 flags = atoi (getenv ("LIBEV_FLAGS"));
1310 1680
1311 ev_rt_now = ev_time (); 1681 ev_rt_now = ev_time ();
1312 mn_now = get_clock (); 1682 mn_now = get_clock ();
1313 now_floor = mn_now; 1683 now_floor = mn_now;
1314 rtmn_diff = ev_rt_now - mn_now; 1684 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending;
1687#endif
1315 1688
1316 io_blocktime = 0.; 1689 io_blocktime = 0.;
1317 timeout_blocktime = 0.; 1690 timeout_blocktime = 0.;
1318 backend = 0; 1691 backend = 0;
1319 backend_fd = -1; 1692 backend_fd = -1;
1320 gotasync = 0; 1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1321#if EV_USE_INOTIFY 1697#if EV_USE_INOTIFY
1322 fs_fd = -2; 1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1323#endif 1699#endif
1324 1700#if EV_USE_SIGNALFD
1325 /* pid check not overridable via env */ 1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1326#ifndef _WIN32
1327 if (flags & EVFLAG_FORKCHECK)
1328 curpid = getpid ();
1329#endif 1702#endif
1330
1331 if (!(flags & EVFLAG_NOENV)
1332 && !enable_secure ()
1333 && getenv ("LIBEV_FLAGS"))
1334 flags = atoi (getenv ("LIBEV_FLAGS"));
1335 1703
1336 if (!(flags & 0x0000ffffU)) 1704 if (!(flags & 0x0000ffffU))
1337 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1338 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1339#if EV_USE_PORT 1710#if EV_USE_PORT
1340 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1341#endif 1712#endif
1342#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1343 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1350#endif 1721#endif
1351#if EV_USE_SELECT 1722#if EV_USE_SELECT
1352 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1353#endif 1724#endif
1354 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1355 ev_init (&pipeev, pipecb); 1729 ev_init (&pipe_w, pipecb);
1356 ev_set_priority (&pipeev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1357 } 1732 }
1358} 1733}
1359 1734
1360static void noinline 1735/* free up a loop structure */
1736void
1361loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
1362{ 1738{
1363 int i; 1739 int i;
1364 1740
1741#if EV_CLEANUP_ENABLE
1742 /* queue cleanup watchers (and execute them) */
1743 if (expect_false (cleanupcnt))
1744 {
1745 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1746 EV_INVOKE_PENDING;
1747 }
1748#endif
1749
1750#if EV_CHILD_ENABLE
1751 if (ev_is_active (&childev))
1752 {
1753 ev_ref (EV_A); /* child watcher */
1754 ev_signal_stop (EV_A_ &childev);
1755 }
1756#endif
1757
1365 if (ev_is_active (&pipeev)) 1758 if (ev_is_active (&pipe_w))
1366 { 1759 {
1367 ev_ref (EV_A); /* signal watcher */ 1760 /*ev_ref (EV_A);*/
1368 ev_io_stop (EV_A_ &pipeev); 1761 /*ev_io_stop (EV_A_ &pipe_w);*/
1369 1762
1370#if EV_USE_EVENTFD 1763#if EV_USE_EVENTFD
1371 if (evfd >= 0) 1764 if (evfd >= 0)
1372 close (evfd); 1765 close (evfd);
1373#endif 1766#endif
1374 1767
1375 if (evpipe [0] >= 0) 1768 if (evpipe [0] >= 0)
1376 { 1769 {
1377 close (evpipe [0]); 1770 EV_WIN32_CLOSE_FD (evpipe [0]);
1378 close (evpipe [1]); 1771 EV_WIN32_CLOSE_FD (evpipe [1]);
1379 } 1772 }
1380 } 1773 }
1774
1775#if EV_USE_SIGNALFD
1776 if (ev_is_active (&sigfd_w))
1777 close (sigfd);
1778#endif
1381 1779
1382#if EV_USE_INOTIFY 1780#if EV_USE_INOTIFY
1383 if (fs_fd >= 0) 1781 if (fs_fd >= 0)
1384 close (fs_fd); 1782 close (fs_fd);
1385#endif 1783#endif
1386 1784
1387 if (backend_fd >= 0) 1785 if (backend_fd >= 0)
1388 close (backend_fd); 1786 close (backend_fd);
1389 1787
1788#if EV_USE_IOCP
1789 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1790#endif
1390#if EV_USE_PORT 1791#if EV_USE_PORT
1391 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1792 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1392#endif 1793#endif
1393#if EV_USE_KQUEUE 1794#if EV_USE_KQUEUE
1394 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1795 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1409#if EV_IDLE_ENABLE 1810#if EV_IDLE_ENABLE
1410 array_free (idle, [i]); 1811 array_free (idle, [i]);
1411#endif 1812#endif
1412 } 1813 }
1413 1814
1414 ev_free (anfds); anfdmax = 0; 1815 ev_free (anfds); anfds = 0; anfdmax = 0;
1415 1816
1416 /* have to use the microsoft-never-gets-it-right macro */ 1817 /* have to use the microsoft-never-gets-it-right macro */
1818 array_free (rfeed, EMPTY);
1417 array_free (fdchange, EMPTY); 1819 array_free (fdchange, EMPTY);
1418 array_free (timer, EMPTY); 1820 array_free (timer, EMPTY);
1419#if EV_PERIODIC_ENABLE 1821#if EV_PERIODIC_ENABLE
1420 array_free (periodic, EMPTY); 1822 array_free (periodic, EMPTY);
1421#endif 1823#endif
1422#if EV_FORK_ENABLE 1824#if EV_FORK_ENABLE
1423 array_free (fork, EMPTY); 1825 array_free (fork, EMPTY);
1424#endif 1826#endif
1827#if EV_CLEANUP_ENABLE
1828 array_free (cleanup, EMPTY);
1829#endif
1425 array_free (prepare, EMPTY); 1830 array_free (prepare, EMPTY);
1426 array_free (check, EMPTY); 1831 array_free (check, EMPTY);
1427#if EV_ASYNC_ENABLE 1832#if EV_ASYNC_ENABLE
1428 array_free (async, EMPTY); 1833 array_free (async, EMPTY);
1429#endif 1834#endif
1430 1835
1431 backend = 0; 1836 backend = 0;
1837
1838#if EV_MULTIPLICITY
1839 if (ev_is_default_loop (EV_A))
1840#endif
1841 ev_default_loop_ptr = 0;
1842#if EV_MULTIPLICITY
1843 else
1844 ev_free (EV_A);
1845#endif
1432} 1846}
1433 1847
1434#if EV_USE_INOTIFY 1848#if EV_USE_INOTIFY
1435void inline_size infy_fork (EV_P); 1849inline_size void infy_fork (EV_P);
1436#endif 1850#endif
1437 1851
1438void inline_size 1852inline_size void
1439loop_fork (EV_P) 1853loop_fork (EV_P)
1440{ 1854{
1441#if EV_USE_PORT 1855#if EV_USE_PORT
1442 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1856 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443#endif 1857#endif
… …
1449#endif 1863#endif
1450#if EV_USE_INOTIFY 1864#if EV_USE_INOTIFY
1451 infy_fork (EV_A); 1865 infy_fork (EV_A);
1452#endif 1866#endif
1453 1867
1454 if (ev_is_active (&pipeev)) 1868 if (ev_is_active (&pipe_w))
1455 { 1869 {
1456 /* this "locks" the handlers against writing to the pipe */ 1870 /* this "locks" the handlers against writing to the pipe */
1457 /* while we modify the fd vars */ 1871 /* while we modify the fd vars */
1458 gotsig = 1; 1872 sig_pending = 1;
1459#if EV_ASYNC_ENABLE 1873#if EV_ASYNC_ENABLE
1460 gotasync = 1; 1874 async_pending = 1;
1461#endif 1875#endif
1462 1876
1463 ev_ref (EV_A); 1877 ev_ref (EV_A);
1464 ev_io_stop (EV_A_ &pipeev); 1878 ev_io_stop (EV_A_ &pipe_w);
1465 1879
1466#if EV_USE_EVENTFD 1880#if EV_USE_EVENTFD
1467 if (evfd >= 0) 1881 if (evfd >= 0)
1468 close (evfd); 1882 close (evfd);
1469#endif 1883#endif
1470 1884
1471 if (evpipe [0] >= 0) 1885 if (evpipe [0] >= 0)
1472 { 1886 {
1473 close (evpipe [0]); 1887 EV_WIN32_CLOSE_FD (evpipe [0]);
1474 close (evpipe [1]); 1888 EV_WIN32_CLOSE_FD (evpipe [1]);
1475 } 1889 }
1476 1890
1891#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1477 evpipe_init (EV_A); 1892 evpipe_init (EV_A);
1478 /* now iterate over everything, in case we missed something */ 1893 /* now iterate over everything, in case we missed something */
1479 pipecb (EV_A_ &pipeev, EV_READ); 1894 pipecb (EV_A_ &pipe_w, EV_READ);
1895#endif
1480 } 1896 }
1481 1897
1482 postfork = 0; 1898 postfork = 0;
1483} 1899}
1484 1900
1485#if EV_MULTIPLICITY 1901#if EV_MULTIPLICITY
1486 1902
1487struct ev_loop * 1903struct ev_loop *
1488ev_loop_new (unsigned int flags) 1904ev_loop_new (unsigned int flags)
1489{ 1905{
1490 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1906 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1491 1907
1492 memset (loop, 0, sizeof (struct ev_loop)); 1908 memset (EV_A, 0, sizeof (struct ev_loop));
1493
1494 loop_init (EV_A_ flags); 1909 loop_init (EV_A_ flags);
1495 1910
1496 if (ev_backend (EV_A)) 1911 if (ev_backend (EV_A))
1497 return loop; 1912 return EV_A;
1498 1913
1914 ev_free (EV_A);
1499 return 0; 1915 return 0;
1500} 1916}
1501 1917
1502void 1918#endif /* multiplicity */
1503ev_loop_destroy (EV_P)
1504{
1505 loop_destroy (EV_A);
1506 ev_free (loop);
1507}
1508
1509void
1510ev_loop_fork (EV_P)
1511{
1512 postfork = 1; /* must be in line with ev_default_fork */
1513}
1514 1919
1515#if EV_VERIFY 1920#if EV_VERIFY
1516static void noinline 1921static void noinline
1517verify_watcher (EV_P_ W w) 1922verify_watcher (EV_P_ W w)
1518{ 1923{
1519 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1924 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520 1925
1521 if (w->pending) 1926 if (w->pending)
1522 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1927 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1523} 1928}
1524 1929
1525static void noinline 1930static void noinline
1526verify_heap (EV_P_ ANHE *heap, int N) 1931verify_heap (EV_P_ ANHE *heap, int N)
1527{ 1932{
1528 int i; 1933 int i;
1529 1934
1530 for (i = HEAP0; i < N + HEAP0; ++i) 1935 for (i = HEAP0; i < N + HEAP0; ++i)
1531 { 1936 {
1532 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1937 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1533 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1938 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1534 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1939 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1535 1940
1536 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1941 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537 } 1942 }
1538} 1943}
1539 1944
1540static void noinline 1945static void noinline
1541array_verify (EV_P_ W *ws, int cnt) 1946array_verify (EV_P_ W *ws, int cnt)
1542{ 1947{
1543 while (cnt--) 1948 while (cnt--)
1544 { 1949 {
1545 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1950 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546 verify_watcher (EV_A_ ws [cnt]); 1951 verify_watcher (EV_A_ ws [cnt]);
1547 } 1952 }
1548} 1953}
1549#endif 1954#endif
1550 1955
1956#if EV_FEATURE_API
1551void 1957void
1552ev_loop_verify (EV_P) 1958ev_verify (EV_P)
1553{ 1959{
1554#if EV_VERIFY 1960#if EV_VERIFY
1555 int i; 1961 int i;
1556 WL w; 1962 WL w;
1557 1963
1558 assert (activecnt >= -1); 1964 assert (activecnt >= -1);
1559 1965
1560 assert (fdchangemax >= fdchangecnt); 1966 assert (fdchangemax >= fdchangecnt);
1561 for (i = 0; i < fdchangecnt; ++i) 1967 for (i = 0; i < fdchangecnt; ++i)
1562 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1968 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563 1969
1564 assert (anfdmax >= 0); 1970 assert (anfdmax >= 0);
1565 for (i = 0; i < anfdmax; ++i) 1971 for (i = 0; i < anfdmax; ++i)
1566 for (w = anfds [i].head; w; w = w->next) 1972 for (w = anfds [i].head; w; w = w->next)
1567 { 1973 {
1568 verify_watcher (EV_A_ (W)w); 1974 verify_watcher (EV_A_ (W)w);
1569 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1975 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1570 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1976 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1571 } 1977 }
1572 1978
1573 assert (timermax >= timercnt); 1979 assert (timermax >= timercnt);
1574 verify_heap (EV_A_ timers, timercnt); 1980 verify_heap (EV_A_ timers, timercnt);
1575 1981
… …
1591#if EV_FORK_ENABLE 1997#if EV_FORK_ENABLE
1592 assert (forkmax >= forkcnt); 1998 assert (forkmax >= forkcnt);
1593 array_verify (EV_A_ (W *)forks, forkcnt); 1999 array_verify (EV_A_ (W *)forks, forkcnt);
1594#endif 2000#endif
1595 2001
2002#if EV_CLEANUP_ENABLE
2003 assert (cleanupmax >= cleanupcnt);
2004 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2005#endif
2006
1596#if EV_ASYNC_ENABLE 2007#if EV_ASYNC_ENABLE
1597 assert (asyncmax >= asynccnt); 2008 assert (asyncmax >= asynccnt);
1598 array_verify (EV_A_ (W *)asyncs, asynccnt); 2009 array_verify (EV_A_ (W *)asyncs, asynccnt);
1599#endif 2010#endif
1600 2011
2012#if EV_PREPARE_ENABLE
1601 assert (preparemax >= preparecnt); 2013 assert (preparemax >= preparecnt);
1602 array_verify (EV_A_ (W *)prepares, preparecnt); 2014 array_verify (EV_A_ (W *)prepares, preparecnt);
2015#endif
1603 2016
2017#if EV_CHECK_ENABLE
1604 assert (checkmax >= checkcnt); 2018 assert (checkmax >= checkcnt);
1605 array_verify (EV_A_ (W *)checks, checkcnt); 2019 array_verify (EV_A_ (W *)checks, checkcnt);
2020#endif
1606 2021
1607# if 0 2022# if 0
2023#if EV_CHILD_ENABLE
1608 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2024 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1609 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2025 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2026#endif
1610# endif 2027# endif
1611#endif 2028#endif
1612} 2029}
1613 2030#endif
1614#endif /* multiplicity */
1615 2031
1616#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
1617struct ev_loop * 2033struct ev_loop *
1618ev_default_loop_init (unsigned int flags)
1619#else 2034#else
1620int 2035int
2036#endif
1621ev_default_loop (unsigned int flags) 2037ev_default_loop (unsigned int flags)
1622#endif
1623{ 2038{
1624 if (!ev_default_loop_ptr) 2039 if (!ev_default_loop_ptr)
1625 { 2040 {
1626#if EV_MULTIPLICITY 2041#if EV_MULTIPLICITY
1627 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2042 EV_P = ev_default_loop_ptr = &default_loop_struct;
1628#else 2043#else
1629 ev_default_loop_ptr = 1; 2044 ev_default_loop_ptr = 1;
1630#endif 2045#endif
1631 2046
1632 loop_init (EV_A_ flags); 2047 loop_init (EV_A_ flags);
1633 2048
1634 if (ev_backend (EV_A)) 2049 if (ev_backend (EV_A))
1635 { 2050 {
1636#ifndef _WIN32 2051#if EV_CHILD_ENABLE
1637 ev_signal_init (&childev, childcb, SIGCHLD); 2052 ev_signal_init (&childev, childcb, SIGCHLD);
1638 ev_set_priority (&childev, EV_MAXPRI); 2053 ev_set_priority (&childev, EV_MAXPRI);
1639 ev_signal_start (EV_A_ &childev); 2054 ev_signal_start (EV_A_ &childev);
1640 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2055 ev_unref (EV_A); /* child watcher should not keep loop alive */
1641#endif 2056#endif
… …
1646 2061
1647 return ev_default_loop_ptr; 2062 return ev_default_loop_ptr;
1648} 2063}
1649 2064
1650void 2065void
1651ev_default_destroy (void) 2066ev_loop_fork (EV_P)
1652{ 2067{
1653#if EV_MULTIPLICITY
1654 struct ev_loop *loop = ev_default_loop_ptr;
1655#endif
1656
1657#ifndef _WIN32
1658 ev_ref (EV_A); /* child watcher */
1659 ev_signal_stop (EV_A_ &childev);
1660#endif
1661
1662 loop_destroy (EV_A);
1663}
1664
1665void
1666ev_default_fork (void)
1667{
1668#if EV_MULTIPLICITY
1669 struct ev_loop *loop = ev_default_loop_ptr;
1670#endif
1671
1672 if (backend)
1673 postfork = 1; /* must be in line with ev_loop_fork */ 2068 postfork = 1; /* must be in line with ev_default_fork */
1674} 2069}
1675 2070
1676/*****************************************************************************/ 2071/*****************************************************************************/
1677 2072
1678void 2073void
1679ev_invoke (EV_P_ void *w, int revents) 2074ev_invoke (EV_P_ void *w, int revents)
1680{ 2075{
1681 EV_CB_INVOKE ((W)w, revents); 2076 EV_CB_INVOKE ((W)w, revents);
1682} 2077}
1683 2078
1684void inline_speed 2079unsigned int
1685call_pending (EV_P) 2080ev_pending_count (EV_P)
2081{
2082 int pri;
2083 unsigned int count = 0;
2084
2085 for (pri = NUMPRI; pri--; )
2086 count += pendingcnt [pri];
2087
2088 return count;
2089}
2090
2091void noinline
2092ev_invoke_pending (EV_P)
1686{ 2093{
1687 int pri; 2094 int pri;
1688 2095
1689 for (pri = NUMPRI; pri--; ) 2096 for (pri = NUMPRI; pri--; )
1690 while (pendingcnt [pri]) 2097 while (pendingcnt [pri])
1691 { 2098 {
1692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2099 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693 2100
1694 if (expect_true (p->w))
1695 {
1696 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2101 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2102 /* ^ this is no longer true, as pending_w could be here */
1697 2103
1698 p->w->pending = 0; 2104 p->w->pending = 0;
1699 EV_CB_INVOKE (p->w, p->events); 2105 EV_CB_INVOKE (p->w, p->events);
1700 EV_FREQUENT_CHECK; 2106 EV_FREQUENT_CHECK;
1701 }
1702 } 2107 }
1703} 2108}
1704 2109
1705#if EV_IDLE_ENABLE 2110#if EV_IDLE_ENABLE
1706void inline_size 2111/* make idle watchers pending. this handles the "call-idle */
2112/* only when higher priorities are idle" logic */
2113inline_size void
1707idle_reify (EV_P) 2114idle_reify (EV_P)
1708{ 2115{
1709 if (expect_false (idleall)) 2116 if (expect_false (idleall))
1710 { 2117 {
1711 int pri; 2118 int pri;
… …
1723 } 2130 }
1724 } 2131 }
1725} 2132}
1726#endif 2133#endif
1727 2134
1728void inline_size 2135/* make timers pending */
2136inline_size void
1729timers_reify (EV_P) 2137timers_reify (EV_P)
1730{ 2138{
1731 EV_FREQUENT_CHECK; 2139 EV_FREQUENT_CHECK;
1732 2140
1733 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2141 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734 { 2142 {
1735 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2143 do
1736
1737 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1738
1739 /* first reschedule or stop timer */
1740 if (w->repeat)
1741 { 2144 {
2145 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2146
2147 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2148
2149 /* first reschedule or stop timer */
2150 if (w->repeat)
2151 {
1742 ev_at (w) += w->repeat; 2152 ev_at (w) += w->repeat;
1743 if (ev_at (w) < mn_now) 2153 if (ev_at (w) < mn_now)
1744 ev_at (w) = mn_now; 2154 ev_at (w) = mn_now;
1745 2155
1746 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2156 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1747 2157
1748 ANHE_at_cache (timers [HEAP0]); 2158 ANHE_at_cache (timers [HEAP0]);
1749 downheap (timers, timercnt, HEAP0); 2159 downheap (timers, timercnt, HEAP0);
2160 }
2161 else
2162 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2163
2164 EV_FREQUENT_CHECK;
2165 feed_reverse (EV_A_ (W)w);
1750 } 2166 }
1751 else 2167 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753 2168
1754 EV_FREQUENT_CHECK; 2169 feed_reverse_done (EV_A_ EV_TIMER);
1755 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1756 } 2170 }
1757} 2171}
1758 2172
1759#if EV_PERIODIC_ENABLE 2173#if EV_PERIODIC_ENABLE
1760void inline_size 2174/* make periodics pending */
2175inline_size void
1761periodics_reify (EV_P) 2176periodics_reify (EV_P)
1762{ 2177{
1763 EV_FREQUENT_CHECK; 2178 EV_FREQUENT_CHECK;
1764 2179
1765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2180 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766 { 2181 {
1767 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2182 int feed_count = 0;
1768 2183
1769 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2184 do
1770
1771 /* first reschedule or stop timer */
1772 if (w->reschedule_cb)
1773 { 2185 {
2186 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2187
2188 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2189
2190 /* first reschedule or stop timer */
2191 if (w->reschedule_cb)
2192 {
1774 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2193 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775 2194
1776 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2195 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1777 2196
1778 ANHE_at_cache (periodics [HEAP0]); 2197 ANHE_at_cache (periodics [HEAP0]);
1779 downheap (periodics, periodiccnt, HEAP0); 2198 downheap (periodics, periodiccnt, HEAP0);
2199 }
2200 else if (w->interval)
2201 {
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2203 /* if next trigger time is not sufficiently in the future, put it there */
2204 /* this might happen because of floating point inexactness */
2205 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2206 {
2207 ev_at (w) += w->interval;
2208
2209 /* if interval is unreasonably low we might still have a time in the past */
2210 /* so correct this. this will make the periodic very inexact, but the user */
2211 /* has effectively asked to get triggered more often than possible */
2212 if (ev_at (w) < ev_rt_now)
2213 ev_at (w) = ev_rt_now;
2214 }
2215
2216 ANHE_at_cache (periodics [HEAP0]);
2217 downheap (periodics, periodiccnt, HEAP0);
2218 }
2219 else
2220 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2221
2222 EV_FREQUENT_CHECK;
2223 feed_reverse (EV_A_ (W)w);
1780 } 2224 }
1781 else if (w->interval) 2225 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1782 {
1783 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1784 /* if next trigger time is not sufficiently in the future, put it there */
1785 /* this might happen because of floating point inexactness */
1786 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1787 {
1788 ev_at (w) += w->interval;
1789 2226
1790 /* if interval is unreasonably low we might still have a time in the past */
1791 /* so correct this. this will make the periodic very inexact, but the user */
1792 /* has effectively asked to get triggered more often than possible */
1793 if (ev_at (w) < ev_rt_now)
1794 ev_at (w) = ev_rt_now;
1795 }
1796
1797 ANHE_at_cache (periodics [HEAP0]);
1798 downheap (periodics, periodiccnt, HEAP0);
1799 }
1800 else
1801 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1802
1803 EV_FREQUENT_CHECK;
1804 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2227 feed_reverse_done (EV_A_ EV_PERIODIC);
1805 } 2228 }
1806} 2229}
1807 2230
2231/* simply recalculate all periodics */
2232/* TODO: maybe ensure that at least one event happens when jumping forward? */
1808static void noinline 2233static void noinline
1809periodics_reschedule (EV_P) 2234periodics_reschedule (EV_P)
1810{ 2235{
1811 int i; 2236 int i;
1812 2237
… …
1825 2250
1826 reheap (periodics, periodiccnt); 2251 reheap (periodics, periodiccnt);
1827} 2252}
1828#endif 2253#endif
1829 2254
1830void inline_speed 2255/* adjust all timers by a given offset */
2256static void noinline
2257timers_reschedule (EV_P_ ev_tstamp adjust)
2258{
2259 int i;
2260
2261 for (i = 0; i < timercnt; ++i)
2262 {
2263 ANHE *he = timers + i + HEAP0;
2264 ANHE_w (*he)->at += adjust;
2265 ANHE_at_cache (*he);
2266 }
2267}
2268
2269/* fetch new monotonic and realtime times from the kernel */
2270/* also detect if there was a timejump, and act accordingly */
2271inline_speed void
1831time_update (EV_P_ ev_tstamp max_block) 2272time_update (EV_P_ ev_tstamp max_block)
1832{ 2273{
1833 int i;
1834
1835#if EV_USE_MONOTONIC 2274#if EV_USE_MONOTONIC
1836 if (expect_true (have_monotonic)) 2275 if (expect_true (have_monotonic))
1837 { 2276 {
2277 int i;
1838 ev_tstamp odiff = rtmn_diff; 2278 ev_tstamp odiff = rtmn_diff;
1839 2279
1840 mn_now = get_clock (); 2280 mn_now = get_clock ();
1841 2281
1842 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2282 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1868 ev_rt_now = ev_time (); 2308 ev_rt_now = ev_time ();
1869 mn_now = get_clock (); 2309 mn_now = get_clock ();
1870 now_floor = mn_now; 2310 now_floor = mn_now;
1871 } 2311 }
1872 2312
2313 /* no timer adjustment, as the monotonic clock doesn't jump */
2314 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873# if EV_PERIODIC_ENABLE 2315# if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 2316 periodics_reschedule (EV_A);
1875# endif 2317# endif
1876 /* no timer adjustment, as the monotonic clock doesn't jump */
1877 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878 } 2318 }
1879 else 2319 else
1880#endif 2320#endif
1881 { 2321 {
1882 ev_rt_now = ev_time (); 2322 ev_rt_now = ev_time ();
1883 2323
1884 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2324 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1885 { 2325 {
2326 /* adjust timers. this is easy, as the offset is the same for all of them */
2327 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1886#if EV_PERIODIC_ENABLE 2328#if EV_PERIODIC_ENABLE
1887 periodics_reschedule (EV_A); 2329 periodics_reschedule (EV_A);
1888#endif 2330#endif
1889 /* adjust timers. this is easy, as the offset is the same for all of them */
1890 for (i = 0; i < timercnt; ++i)
1891 {
1892 ANHE *he = timers + i + HEAP0;
1893 ANHE_w (*he)->at += ev_rt_now - mn_now;
1894 ANHE_at_cache (*he);
1895 }
1896 } 2331 }
1897 2332
1898 mn_now = ev_rt_now; 2333 mn_now = ev_rt_now;
1899 } 2334 }
1900} 2335}
1901 2336
1902void 2337void
1903ev_ref (EV_P)
1904{
1905 ++activecnt;
1906}
1907
1908void
1909ev_unref (EV_P)
1910{
1911 --activecnt;
1912}
1913
1914void
1915ev_now_update (EV_P)
1916{
1917 time_update (EV_A_ 1e100);
1918}
1919
1920static int loop_done;
1921
1922void
1923ev_loop (EV_P_ int flags) 2338ev_run (EV_P_ int flags)
1924{ 2339{
2340#if EV_FEATURE_API
2341 ++loop_depth;
2342#endif
2343
2344 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2345
1925 loop_done = EVUNLOOP_CANCEL; 2346 loop_done = EVBREAK_CANCEL;
1926 2347
1927 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2348 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1928 2349
1929 do 2350 do
1930 { 2351 {
1931#if EV_VERIFY >= 2 2352#if EV_VERIFY >= 2
1932 ev_loop_verify (EV_A); 2353 ev_verify (EV_A);
1933#endif 2354#endif
1934 2355
1935#ifndef _WIN32 2356#ifndef _WIN32
1936 if (expect_false (curpid)) /* penalise the forking check even more */ 2357 if (expect_false (curpid)) /* penalise the forking check even more */
1937 if (expect_false (getpid () != curpid)) 2358 if (expect_false (getpid () != curpid))
… …
1945 /* we might have forked, so queue fork handlers */ 2366 /* we might have forked, so queue fork handlers */
1946 if (expect_false (postfork)) 2367 if (expect_false (postfork))
1947 if (forkcnt) 2368 if (forkcnt)
1948 { 2369 {
1949 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2370 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1950 call_pending (EV_A); 2371 EV_INVOKE_PENDING;
1951 } 2372 }
1952#endif 2373#endif
1953 2374
2375#if EV_PREPARE_ENABLE
1954 /* queue prepare watchers (and execute them) */ 2376 /* queue prepare watchers (and execute them) */
1955 if (expect_false (preparecnt)) 2377 if (expect_false (preparecnt))
1956 { 2378 {
1957 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2379 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1958 call_pending (EV_A); 2380 EV_INVOKE_PENDING;
1959 } 2381 }
2382#endif
1960 2383
1961 if (expect_false (!activecnt)) 2384 if (expect_false (loop_done))
1962 break; 2385 break;
1963 2386
1964 /* we might have forked, so reify kernel state if necessary */ 2387 /* we might have forked, so reify kernel state if necessary */
1965 if (expect_false (postfork)) 2388 if (expect_false (postfork))
1966 loop_fork (EV_A); 2389 loop_fork (EV_A);
… …
1971 /* calculate blocking time */ 2394 /* calculate blocking time */
1972 { 2395 {
1973 ev_tstamp waittime = 0.; 2396 ev_tstamp waittime = 0.;
1974 ev_tstamp sleeptime = 0.; 2397 ev_tstamp sleeptime = 0.;
1975 2398
2399 /* remember old timestamp for io_blocktime calculation */
2400 ev_tstamp prev_mn_now = mn_now;
2401
2402 /* update time to cancel out callback processing overhead */
2403 time_update (EV_A_ 1e100);
2404
1976 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2405 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1977 { 2406 {
1978 /* update time to cancel out callback processing overhead */
1979 time_update (EV_A_ 1e100);
1980
1981 waittime = MAX_BLOCKTIME; 2407 waittime = MAX_BLOCKTIME;
1982 2408
1983 if (timercnt) 2409 if (timercnt)
1984 { 2410 {
1985 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2411 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1992 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2418 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1993 if (waittime > to) waittime = to; 2419 if (waittime > to) waittime = to;
1994 } 2420 }
1995#endif 2421#endif
1996 2422
2423 /* don't let timeouts decrease the waittime below timeout_blocktime */
1997 if (expect_false (waittime < timeout_blocktime)) 2424 if (expect_false (waittime < timeout_blocktime))
1998 waittime = timeout_blocktime; 2425 waittime = timeout_blocktime;
1999 2426
2000 sleeptime = waittime - backend_fudge; 2427 /* extra check because io_blocktime is commonly 0 */
2001
2002 if (expect_true (sleeptime > io_blocktime)) 2428 if (expect_false (io_blocktime))
2003 sleeptime = io_blocktime;
2004
2005 if (sleeptime)
2006 { 2429 {
2430 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2431
2432 if (sleeptime > waittime - backend_fudge)
2433 sleeptime = waittime - backend_fudge;
2434
2435 if (expect_true (sleeptime > 0.))
2436 {
2007 ev_sleep (sleeptime); 2437 ev_sleep (sleeptime);
2008 waittime -= sleeptime; 2438 waittime -= sleeptime;
2439 }
2009 } 2440 }
2010 } 2441 }
2011 2442
2443#if EV_FEATURE_API
2012 ++loop_count; 2444 ++loop_count;
2445#endif
2446 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2013 backend_poll (EV_A_ waittime); 2447 backend_poll (EV_A_ waittime);
2448 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2014 2449
2015 /* update ev_rt_now, do magic */ 2450 /* update ev_rt_now, do magic */
2016 time_update (EV_A_ waittime + sleeptime); 2451 time_update (EV_A_ waittime + sleeptime);
2017 } 2452 }
2018 2453
… …
2025#if EV_IDLE_ENABLE 2460#if EV_IDLE_ENABLE
2026 /* queue idle watchers unless other events are pending */ 2461 /* queue idle watchers unless other events are pending */
2027 idle_reify (EV_A); 2462 idle_reify (EV_A);
2028#endif 2463#endif
2029 2464
2465#if EV_CHECK_ENABLE
2030 /* queue check watchers, to be executed first */ 2466 /* queue check watchers, to be executed first */
2031 if (expect_false (checkcnt)) 2467 if (expect_false (checkcnt))
2032 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2468 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2469#endif
2033 2470
2034 call_pending (EV_A); 2471 EV_INVOKE_PENDING;
2035 } 2472 }
2036 while (expect_true ( 2473 while (expect_true (
2037 activecnt 2474 activecnt
2038 && !loop_done 2475 && !loop_done
2039 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2476 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2040 )); 2477 ));
2041 2478
2042 if (loop_done == EVUNLOOP_ONE) 2479 if (loop_done == EVBREAK_ONE)
2043 loop_done = EVUNLOOP_CANCEL; 2480 loop_done = EVBREAK_CANCEL;
2044}
2045 2481
2482#if EV_FEATURE_API
2483 --loop_depth;
2484#endif
2485}
2486
2046void 2487void
2047ev_unloop (EV_P_ int how) 2488ev_break (EV_P_ int how)
2048{ 2489{
2049 loop_done = how; 2490 loop_done = how;
2050} 2491}
2051 2492
2493void
2494ev_ref (EV_P)
2495{
2496 ++activecnt;
2497}
2498
2499void
2500ev_unref (EV_P)
2501{
2502 --activecnt;
2503}
2504
2505void
2506ev_now_update (EV_P)
2507{
2508 time_update (EV_A_ 1e100);
2509}
2510
2511void
2512ev_suspend (EV_P)
2513{
2514 ev_now_update (EV_A);
2515}
2516
2517void
2518ev_resume (EV_P)
2519{
2520 ev_tstamp mn_prev = mn_now;
2521
2522 ev_now_update (EV_A);
2523 timers_reschedule (EV_A_ mn_now - mn_prev);
2524#if EV_PERIODIC_ENABLE
2525 /* TODO: really do this? */
2526 periodics_reschedule (EV_A);
2527#endif
2528}
2529
2052/*****************************************************************************/ 2530/*****************************************************************************/
2531/* singly-linked list management, used when the expected list length is short */
2053 2532
2054void inline_size 2533inline_size void
2055wlist_add (WL *head, WL elem) 2534wlist_add (WL *head, WL elem)
2056{ 2535{
2057 elem->next = *head; 2536 elem->next = *head;
2058 *head = elem; 2537 *head = elem;
2059} 2538}
2060 2539
2061void inline_size 2540inline_size void
2062wlist_del (WL *head, WL elem) 2541wlist_del (WL *head, WL elem)
2063{ 2542{
2064 while (*head) 2543 while (*head)
2065 { 2544 {
2066 if (*head == elem) 2545 if (expect_true (*head == elem))
2067 { 2546 {
2068 *head = elem->next; 2547 *head = elem->next;
2069 return; 2548 break;
2070 } 2549 }
2071 2550
2072 head = &(*head)->next; 2551 head = &(*head)->next;
2073 } 2552 }
2074} 2553}
2075 2554
2076void inline_speed 2555/* internal, faster, version of ev_clear_pending */
2556inline_speed void
2077clear_pending (EV_P_ W w) 2557clear_pending (EV_P_ W w)
2078{ 2558{
2079 if (w->pending) 2559 if (w->pending)
2080 { 2560 {
2081 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2561 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2082 w->pending = 0; 2562 w->pending = 0;
2083 } 2563 }
2084} 2564}
2085 2565
2086int 2566int
… …
2090 int pending = w_->pending; 2570 int pending = w_->pending;
2091 2571
2092 if (expect_true (pending)) 2572 if (expect_true (pending))
2093 { 2573 {
2094 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2574 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2575 p->w = (W)&pending_w;
2095 w_->pending = 0; 2576 w_->pending = 0;
2096 p->w = 0;
2097 return p->events; 2577 return p->events;
2098 } 2578 }
2099 else 2579 else
2100 return 0; 2580 return 0;
2101} 2581}
2102 2582
2103void inline_size 2583inline_size void
2104pri_adjust (EV_P_ W w) 2584pri_adjust (EV_P_ W w)
2105{ 2585{
2106 int pri = w->priority; 2586 int pri = ev_priority (w);
2107 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2587 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2108 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2588 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2109 w->priority = pri; 2589 ev_set_priority (w, pri);
2110} 2590}
2111 2591
2112void inline_speed 2592inline_speed void
2113ev_start (EV_P_ W w, int active) 2593ev_start (EV_P_ W w, int active)
2114{ 2594{
2115 pri_adjust (EV_A_ w); 2595 pri_adjust (EV_A_ w);
2116 w->active = active; 2596 w->active = active;
2117 ev_ref (EV_A); 2597 ev_ref (EV_A);
2118} 2598}
2119 2599
2120void inline_size 2600inline_size void
2121ev_stop (EV_P_ W w) 2601ev_stop (EV_P_ W w)
2122{ 2602{
2123 ev_unref (EV_A); 2603 ev_unref (EV_A);
2124 w->active = 0; 2604 w->active = 0;
2125} 2605}
… …
2132 int fd = w->fd; 2612 int fd = w->fd;
2133 2613
2134 if (expect_false (ev_is_active (w))) 2614 if (expect_false (ev_is_active (w)))
2135 return; 2615 return;
2136 2616
2137 assert (("ev_io_start called with negative fd", fd >= 0)); 2617 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2618 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2138 2619
2139 EV_FREQUENT_CHECK; 2620 EV_FREQUENT_CHECK;
2140 2621
2141 ev_start (EV_A_ (W)w, 1); 2622 ev_start (EV_A_ (W)w, 1);
2142 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2623 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2143 wlist_add (&anfds[fd].head, (WL)w); 2624 wlist_add (&anfds[fd].head, (WL)w);
2144 2625
2145 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2626 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2146 w->events &= ~EV_IOFDSET; 2627 w->events &= ~EV__IOFDSET;
2147 2628
2148 EV_FREQUENT_CHECK; 2629 EV_FREQUENT_CHECK;
2149} 2630}
2150 2631
2151void noinline 2632void noinline
… …
2153{ 2634{
2154 clear_pending (EV_A_ (W)w); 2635 clear_pending (EV_A_ (W)w);
2155 if (expect_false (!ev_is_active (w))) 2636 if (expect_false (!ev_is_active (w)))
2156 return; 2637 return;
2157 2638
2158 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2639 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2159 2640
2160 EV_FREQUENT_CHECK; 2641 EV_FREQUENT_CHECK;
2161 2642
2162 wlist_del (&anfds[w->fd].head, (WL)w); 2643 wlist_del (&anfds[w->fd].head, (WL)w);
2163 ev_stop (EV_A_ (W)w); 2644 ev_stop (EV_A_ (W)w);
2164 2645
2165 fd_change (EV_A_ w->fd, 1); 2646 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2166 2647
2167 EV_FREQUENT_CHECK; 2648 EV_FREQUENT_CHECK;
2168} 2649}
2169 2650
2170void noinline 2651void noinline
… …
2173 if (expect_false (ev_is_active (w))) 2654 if (expect_false (ev_is_active (w)))
2174 return; 2655 return;
2175 2656
2176 ev_at (w) += mn_now; 2657 ev_at (w) += mn_now;
2177 2658
2178 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2659 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2179 2660
2180 EV_FREQUENT_CHECK; 2661 EV_FREQUENT_CHECK;
2181 2662
2182 ++timercnt; 2663 ++timercnt;
2183 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2664 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2186 ANHE_at_cache (timers [ev_active (w)]); 2667 ANHE_at_cache (timers [ev_active (w)]);
2187 upheap (timers, ev_active (w)); 2668 upheap (timers, ev_active (w));
2188 2669
2189 EV_FREQUENT_CHECK; 2670 EV_FREQUENT_CHECK;
2190 2671
2191 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2672 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2192} 2673}
2193 2674
2194void noinline 2675void noinline
2195ev_timer_stop (EV_P_ ev_timer *w) 2676ev_timer_stop (EV_P_ ev_timer *w)
2196{ 2677{
… …
2201 EV_FREQUENT_CHECK; 2682 EV_FREQUENT_CHECK;
2202 2683
2203 { 2684 {
2204 int active = ev_active (w); 2685 int active = ev_active (w);
2205 2686
2206 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2687 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2207 2688
2208 --timercnt; 2689 --timercnt;
2209 2690
2210 if (expect_true (active < timercnt + HEAP0)) 2691 if (expect_true (active < timercnt + HEAP0))
2211 { 2692 {
2212 timers [active] = timers [timercnt + HEAP0]; 2693 timers [active] = timers [timercnt + HEAP0];
2213 adjustheap (timers, timercnt, active); 2694 adjustheap (timers, timercnt, active);
2214 } 2695 }
2215 } 2696 }
2216 2697
2217 EV_FREQUENT_CHECK;
2218
2219 ev_at (w) -= mn_now; 2698 ev_at (w) -= mn_now;
2220 2699
2221 ev_stop (EV_A_ (W)w); 2700 ev_stop (EV_A_ (W)w);
2701
2702 EV_FREQUENT_CHECK;
2222} 2703}
2223 2704
2224void noinline 2705void noinline
2225ev_timer_again (EV_P_ ev_timer *w) 2706ev_timer_again (EV_P_ ev_timer *w)
2226{ 2707{
… …
2244 } 2725 }
2245 2726
2246 EV_FREQUENT_CHECK; 2727 EV_FREQUENT_CHECK;
2247} 2728}
2248 2729
2730ev_tstamp
2731ev_timer_remaining (EV_P_ ev_timer *w)
2732{
2733 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2734}
2735
2249#if EV_PERIODIC_ENABLE 2736#if EV_PERIODIC_ENABLE
2250void noinline 2737void noinline
2251ev_periodic_start (EV_P_ ev_periodic *w) 2738ev_periodic_start (EV_P_ ev_periodic *w)
2252{ 2739{
2253 if (expect_false (ev_is_active (w))) 2740 if (expect_false (ev_is_active (w)))
… …
2255 2742
2256 if (w->reschedule_cb) 2743 if (w->reschedule_cb)
2257 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2744 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2258 else if (w->interval) 2745 else if (w->interval)
2259 { 2746 {
2260 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2747 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2261 /* this formula differs from the one in periodic_reify because we do not always round up */ 2748 /* this formula differs from the one in periodic_reify because we do not always round up */
2262 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2749 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2263 } 2750 }
2264 else 2751 else
2265 ev_at (w) = w->offset; 2752 ev_at (w) = w->offset;
… …
2273 ANHE_at_cache (periodics [ev_active (w)]); 2760 ANHE_at_cache (periodics [ev_active (w)]);
2274 upheap (periodics, ev_active (w)); 2761 upheap (periodics, ev_active (w));
2275 2762
2276 EV_FREQUENT_CHECK; 2763 EV_FREQUENT_CHECK;
2277 2764
2278 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2765 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2279} 2766}
2280 2767
2281void noinline 2768void noinline
2282ev_periodic_stop (EV_P_ ev_periodic *w) 2769ev_periodic_stop (EV_P_ ev_periodic *w)
2283{ 2770{
… …
2288 EV_FREQUENT_CHECK; 2775 EV_FREQUENT_CHECK;
2289 2776
2290 { 2777 {
2291 int active = ev_active (w); 2778 int active = ev_active (w);
2292 2779
2293 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2780 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2294 2781
2295 --periodiccnt; 2782 --periodiccnt;
2296 2783
2297 if (expect_true (active < periodiccnt + HEAP0)) 2784 if (expect_true (active < periodiccnt + HEAP0))
2298 { 2785 {
2299 periodics [active] = periodics [periodiccnt + HEAP0]; 2786 periodics [active] = periodics [periodiccnt + HEAP0];
2300 adjustheap (periodics, periodiccnt, active); 2787 adjustheap (periodics, periodiccnt, active);
2301 } 2788 }
2302 } 2789 }
2303 2790
2304 EV_FREQUENT_CHECK;
2305
2306 ev_stop (EV_A_ (W)w); 2791 ev_stop (EV_A_ (W)w);
2792
2793 EV_FREQUENT_CHECK;
2307} 2794}
2308 2795
2309void noinline 2796void noinline
2310ev_periodic_again (EV_P_ ev_periodic *w) 2797ev_periodic_again (EV_P_ ev_periodic *w)
2311{ 2798{
… …
2317 2804
2318#ifndef SA_RESTART 2805#ifndef SA_RESTART
2319# define SA_RESTART 0 2806# define SA_RESTART 0
2320#endif 2807#endif
2321 2808
2809#if EV_SIGNAL_ENABLE
2810
2322void noinline 2811void noinline
2323ev_signal_start (EV_P_ ev_signal *w) 2812ev_signal_start (EV_P_ ev_signal *w)
2324{ 2813{
2325#if EV_MULTIPLICITY
2326 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2327#endif
2328 if (expect_false (ev_is_active (w))) 2814 if (expect_false (ev_is_active (w)))
2329 return; 2815 return;
2330 2816
2331 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2817 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2332 2818
2333 evpipe_init (EV_A); 2819#if EV_MULTIPLICITY
2820 assert (("libev: a signal must not be attached to two different loops",
2821 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2334 2822
2335 EV_FREQUENT_CHECK; 2823 signals [w->signum - 1].loop = EV_A;
2824#endif
2336 2825
2826 EV_FREQUENT_CHECK;
2827
2828#if EV_USE_SIGNALFD
2829 if (sigfd == -2)
2337 { 2830 {
2338#ifndef _WIN32 2831 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2339 sigset_t full, prev; 2832 if (sigfd < 0 && errno == EINVAL)
2340 sigfillset (&full); 2833 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2341 sigprocmask (SIG_SETMASK, &full, &prev);
2342#endif
2343 2834
2344 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2835 if (sigfd >= 0)
2836 {
2837 fd_intern (sigfd); /* doing it twice will not hurt */
2345 2838
2346#ifndef _WIN32 2839 sigemptyset (&sigfd_set);
2347 sigprocmask (SIG_SETMASK, &prev, 0); 2840
2348#endif 2841 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2842 ev_set_priority (&sigfd_w, EV_MAXPRI);
2843 ev_io_start (EV_A_ &sigfd_w);
2844 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2845 }
2349 } 2846 }
2847
2848 if (sigfd >= 0)
2849 {
2850 /* TODO: check .head */
2851 sigaddset (&sigfd_set, w->signum);
2852 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2853
2854 signalfd (sigfd, &sigfd_set, 0);
2855 }
2856#endif
2350 2857
2351 ev_start (EV_A_ (W)w, 1); 2858 ev_start (EV_A_ (W)w, 1);
2352 wlist_add (&signals [w->signum - 1].head, (WL)w); 2859 wlist_add (&signals [w->signum - 1].head, (WL)w);
2353 2860
2354 if (!((WL)w)->next) 2861 if (!((WL)w)->next)
2862# if EV_USE_SIGNALFD
2863 if (sigfd < 0) /*TODO*/
2864# endif
2355 { 2865 {
2356#if _WIN32 2866# ifdef _WIN32
2867 evpipe_init (EV_A);
2868
2357 signal (w->signum, ev_sighandler); 2869 signal (w->signum, ev_sighandler);
2358#else 2870# else
2359 struct sigaction sa; 2871 struct sigaction sa;
2872
2873 evpipe_init (EV_A);
2874
2360 sa.sa_handler = ev_sighandler; 2875 sa.sa_handler = ev_sighandler;
2361 sigfillset (&sa.sa_mask); 2876 sigfillset (&sa.sa_mask);
2362 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2877 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2363 sigaction (w->signum, &sa, 0); 2878 sigaction (w->signum, &sa, 0);
2879
2880 sigemptyset (&sa.sa_mask);
2881 sigaddset (&sa.sa_mask, w->signum);
2882 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2364#endif 2883#endif
2365 } 2884 }
2366 2885
2367 EV_FREQUENT_CHECK; 2886 EV_FREQUENT_CHECK;
2368} 2887}
2369 2888
2370void noinline 2889void noinline
… …
2378 2897
2379 wlist_del (&signals [w->signum - 1].head, (WL)w); 2898 wlist_del (&signals [w->signum - 1].head, (WL)w);
2380 ev_stop (EV_A_ (W)w); 2899 ev_stop (EV_A_ (W)w);
2381 2900
2382 if (!signals [w->signum - 1].head) 2901 if (!signals [w->signum - 1].head)
2902 {
2903#if EV_MULTIPLICITY
2904 signals [w->signum - 1].loop = 0; /* unattach from signal */
2905#endif
2906#if EV_USE_SIGNALFD
2907 if (sigfd >= 0)
2908 {
2909 sigset_t ss;
2910
2911 sigemptyset (&ss);
2912 sigaddset (&ss, w->signum);
2913 sigdelset (&sigfd_set, w->signum);
2914
2915 signalfd (sigfd, &sigfd_set, 0);
2916 sigprocmask (SIG_UNBLOCK, &ss, 0);
2917 }
2918 else
2919#endif
2383 signal (w->signum, SIG_DFL); 2920 signal (w->signum, SIG_DFL);
2921 }
2384 2922
2385 EV_FREQUENT_CHECK; 2923 EV_FREQUENT_CHECK;
2386} 2924}
2925
2926#endif
2927
2928#if EV_CHILD_ENABLE
2387 2929
2388void 2930void
2389ev_child_start (EV_P_ ev_child *w) 2931ev_child_start (EV_P_ ev_child *w)
2390{ 2932{
2391#if EV_MULTIPLICITY 2933#if EV_MULTIPLICITY
2392 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2934 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2393#endif 2935#endif
2394 if (expect_false (ev_is_active (w))) 2936 if (expect_false (ev_is_active (w)))
2395 return; 2937 return;
2396 2938
2397 EV_FREQUENT_CHECK; 2939 EV_FREQUENT_CHECK;
2398 2940
2399 ev_start (EV_A_ (W)w, 1); 2941 ev_start (EV_A_ (W)w, 1);
2400 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2942 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2401 2943
2402 EV_FREQUENT_CHECK; 2944 EV_FREQUENT_CHECK;
2403} 2945}
2404 2946
2405void 2947void
… …
2409 if (expect_false (!ev_is_active (w))) 2951 if (expect_false (!ev_is_active (w)))
2410 return; 2952 return;
2411 2953
2412 EV_FREQUENT_CHECK; 2954 EV_FREQUENT_CHECK;
2413 2955
2414 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2956 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2415 ev_stop (EV_A_ (W)w); 2957 ev_stop (EV_A_ (W)w);
2416 2958
2417 EV_FREQUENT_CHECK; 2959 EV_FREQUENT_CHECK;
2418} 2960}
2961
2962#endif
2419 2963
2420#if EV_STAT_ENABLE 2964#if EV_STAT_ENABLE
2421 2965
2422# ifdef _WIN32 2966# ifdef _WIN32
2423# undef lstat 2967# undef lstat
2424# define lstat(a,b) _stati64 (a,b) 2968# define lstat(a,b) _stati64 (a,b)
2425# endif 2969# endif
2426 2970
2427#define DEF_STAT_INTERVAL 5.0074891 2971#define DEF_STAT_INTERVAL 5.0074891
2972#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2428#define MIN_STAT_INTERVAL 0.1074891 2973#define MIN_STAT_INTERVAL 0.1074891
2429 2974
2430static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2975static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2431 2976
2432#if EV_USE_INOTIFY 2977#if EV_USE_INOTIFY
2433# define EV_INOTIFY_BUFSIZE 8192 2978
2979/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2980# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2434 2981
2435static void noinline 2982static void noinline
2436infy_add (EV_P_ ev_stat *w) 2983infy_add (EV_P_ ev_stat *w)
2437{ 2984{
2438 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); 2985 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);
2439 2986
2440 if (w->wd < 0) 2987 if (w->wd >= 0)
2988 {
2989 struct statfs sfs;
2990
2991 /* now local changes will be tracked by inotify, but remote changes won't */
2992 /* unless the filesystem is known to be local, we therefore still poll */
2993 /* also do poll on <2.6.25, but with normal frequency */
2994
2995 if (!fs_2625)
2996 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2997 else if (!statfs (w->path, &sfs)
2998 && (sfs.f_type == 0x1373 /* devfs */
2999 || sfs.f_type == 0xEF53 /* ext2/3 */
3000 || sfs.f_type == 0x3153464a /* jfs */
3001 || sfs.f_type == 0x52654973 /* reiser3 */
3002 || sfs.f_type == 0x01021994 /* tempfs */
3003 || sfs.f_type == 0x58465342 /* xfs */))
3004 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3005 else
3006 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2441 { 3007 }
2442 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3008 else
3009 {
3010 /* can't use inotify, continue to stat */
3011 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2443 3012
2444 /* monitor some parent directory for speedup hints */ 3013 /* if path is not there, monitor some parent directory for speedup hints */
2445 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3014 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2446 /* but an efficiency issue only */ 3015 /* but an efficiency issue only */
2447 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3016 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2448 { 3017 {
2449 char path [4096]; 3018 char path [4096];
2450 strcpy (path, w->path); 3019 strcpy (path, w->path);
… …
2454 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3023 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2455 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3024 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2456 3025
2457 char *pend = strrchr (path, '/'); 3026 char *pend = strrchr (path, '/');
2458 3027
2459 if (!pend) 3028 if (!pend || pend == path)
2460 break; /* whoops, no '/', complain to your admin */ 3029 break;
2461 3030
2462 *pend = 0; 3031 *pend = 0;
2463 w->wd = inotify_add_watch (fs_fd, path, mask); 3032 w->wd = inotify_add_watch (fs_fd, path, mask);
2464 } 3033 }
2465 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3034 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2466 } 3035 }
2467 } 3036 }
2468 else
2469 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2470 3037
2471 if (w->wd >= 0) 3038 if (w->wd >= 0)
2472 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3039 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3040
3041 /* now re-arm timer, if required */
3042 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3043 ev_timer_again (EV_A_ &w->timer);
3044 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2473} 3045}
2474 3046
2475static void noinline 3047static void noinline
2476infy_del (EV_P_ ev_stat *w) 3048infy_del (EV_P_ ev_stat *w)
2477{ 3049{
… …
2480 3052
2481 if (wd < 0) 3053 if (wd < 0)
2482 return; 3054 return;
2483 3055
2484 w->wd = -2; 3056 w->wd = -2;
2485 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3057 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2486 wlist_del (&fs_hash [slot].head, (WL)w); 3058 wlist_del (&fs_hash [slot].head, (WL)w);
2487 3059
2488 /* remove this watcher, if others are watching it, they will rearm */ 3060 /* remove this watcher, if others are watching it, they will rearm */
2489 inotify_rm_watch (fs_fd, wd); 3061 inotify_rm_watch (fs_fd, wd);
2490} 3062}
2491 3063
2492static void noinline 3064static void noinline
2493infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3065infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2494{ 3066{
2495 if (slot < 0) 3067 if (slot < 0)
2496 /* overflow, need to check for all hahs slots */ 3068 /* overflow, need to check for all hash slots */
2497 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3069 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2498 infy_wd (EV_A_ slot, wd, ev); 3070 infy_wd (EV_A_ slot, wd, ev);
2499 else 3071 else
2500 { 3072 {
2501 WL w_; 3073 WL w_;
2502 3074
2503 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3075 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2504 { 3076 {
2505 ev_stat *w = (ev_stat *)w_; 3077 ev_stat *w = (ev_stat *)w_;
2506 w_ = w_->next; /* lets us remove this watcher and all before it */ 3078 w_ = w_->next; /* lets us remove this watcher and all before it */
2507 3079
2508 if (w->wd == wd || wd == -1) 3080 if (w->wd == wd || wd == -1)
2509 { 3081 {
2510 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3082 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2511 { 3083 {
3084 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2512 w->wd = -1; 3085 w->wd = -1;
2513 infy_add (EV_A_ w); /* re-add, no matter what */ 3086 infy_add (EV_A_ w); /* re-add, no matter what */
2514 } 3087 }
2515 3088
2516 stat_timer_cb (EV_A_ &w->timer, 0); 3089 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2521 3094
2522static void 3095static void
2523infy_cb (EV_P_ ev_io *w, int revents) 3096infy_cb (EV_P_ ev_io *w, int revents)
2524{ 3097{
2525 char buf [EV_INOTIFY_BUFSIZE]; 3098 char buf [EV_INOTIFY_BUFSIZE];
2526 struct inotify_event *ev = (struct inotify_event *)buf;
2527 int ofs; 3099 int ofs;
2528 int len = read (fs_fd, buf, sizeof (buf)); 3100 int len = read (fs_fd, buf, sizeof (buf));
2529 3101
2530 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3102 for (ofs = 0; ofs < len; )
3103 {
3104 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2531 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3105 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3106 ofs += sizeof (struct inotify_event) + ev->len;
3107 }
2532} 3108}
2533 3109
2534void inline_size 3110inline_size void
3111ev_check_2625 (EV_P)
3112{
3113 /* kernels < 2.6.25 are borked
3114 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3115 */
3116 if (ev_linux_version () < 0x020619)
3117 return;
3118
3119 fs_2625 = 1;
3120}
3121
3122inline_size int
3123infy_newfd (void)
3124{
3125#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3126 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3127 if (fd >= 0)
3128 return fd;
3129#endif
3130 return inotify_init ();
3131}
3132
3133inline_size void
2535infy_init (EV_P) 3134infy_init (EV_P)
2536{ 3135{
2537 if (fs_fd != -2) 3136 if (fs_fd != -2)
2538 return; 3137 return;
2539 3138
3139 fs_fd = -1;
3140
3141 ev_check_2625 (EV_A);
3142
2540 fs_fd = inotify_init (); 3143 fs_fd = infy_newfd ();
2541 3144
2542 if (fs_fd >= 0) 3145 if (fs_fd >= 0)
2543 { 3146 {
3147 fd_intern (fs_fd);
2544 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3148 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2545 ev_set_priority (&fs_w, EV_MAXPRI); 3149 ev_set_priority (&fs_w, EV_MAXPRI);
2546 ev_io_start (EV_A_ &fs_w); 3150 ev_io_start (EV_A_ &fs_w);
3151 ev_unref (EV_A);
2547 } 3152 }
2548} 3153}
2549 3154
2550void inline_size 3155inline_size void
2551infy_fork (EV_P) 3156infy_fork (EV_P)
2552{ 3157{
2553 int slot; 3158 int slot;
2554 3159
2555 if (fs_fd < 0) 3160 if (fs_fd < 0)
2556 return; 3161 return;
2557 3162
3163 ev_ref (EV_A);
3164 ev_io_stop (EV_A_ &fs_w);
2558 close (fs_fd); 3165 close (fs_fd);
2559 fs_fd = inotify_init (); 3166 fs_fd = infy_newfd ();
2560 3167
3168 if (fs_fd >= 0)
3169 {
3170 fd_intern (fs_fd);
3171 ev_io_set (&fs_w, fs_fd, EV_READ);
3172 ev_io_start (EV_A_ &fs_w);
3173 ev_unref (EV_A);
3174 }
3175
2561 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3176 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2562 { 3177 {
2563 WL w_ = fs_hash [slot].head; 3178 WL w_ = fs_hash [slot].head;
2564 fs_hash [slot].head = 0; 3179 fs_hash [slot].head = 0;
2565 3180
2566 while (w_) 3181 while (w_)
… …
2571 w->wd = -1; 3186 w->wd = -1;
2572 3187
2573 if (fs_fd >= 0) 3188 if (fs_fd >= 0)
2574 infy_add (EV_A_ w); /* re-add, no matter what */ 3189 infy_add (EV_A_ w); /* re-add, no matter what */
2575 else 3190 else
3191 {
3192 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3193 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2576 ev_timer_start (EV_A_ &w->timer); 3194 ev_timer_again (EV_A_ &w->timer);
3195 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3196 }
2577 } 3197 }
2578
2579 } 3198 }
2580} 3199}
2581 3200
2582#endif 3201#endif
2583 3202
… …
2599static void noinline 3218static void noinline
2600stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3219stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2601{ 3220{
2602 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3221 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2603 3222
2604 /* we copy this here each the time so that */ 3223 ev_statdata prev = w->attr;
2605 /* prev has the old value when the callback gets invoked */
2606 w->prev = w->attr;
2607 ev_stat_stat (EV_A_ w); 3224 ev_stat_stat (EV_A_ w);
2608 3225
2609 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3226 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2610 if ( 3227 if (
2611 w->prev.st_dev != w->attr.st_dev 3228 prev.st_dev != w->attr.st_dev
2612 || w->prev.st_ino != w->attr.st_ino 3229 || prev.st_ino != w->attr.st_ino
2613 || w->prev.st_mode != w->attr.st_mode 3230 || prev.st_mode != w->attr.st_mode
2614 || w->prev.st_nlink != w->attr.st_nlink 3231 || prev.st_nlink != w->attr.st_nlink
2615 || w->prev.st_uid != w->attr.st_uid 3232 || prev.st_uid != w->attr.st_uid
2616 || w->prev.st_gid != w->attr.st_gid 3233 || prev.st_gid != w->attr.st_gid
2617 || w->prev.st_rdev != w->attr.st_rdev 3234 || prev.st_rdev != w->attr.st_rdev
2618 || w->prev.st_size != w->attr.st_size 3235 || prev.st_size != w->attr.st_size
2619 || w->prev.st_atime != w->attr.st_atime 3236 || prev.st_atime != w->attr.st_atime
2620 || w->prev.st_mtime != w->attr.st_mtime 3237 || prev.st_mtime != w->attr.st_mtime
2621 || w->prev.st_ctime != w->attr.st_ctime 3238 || prev.st_ctime != w->attr.st_ctime
2622 ) { 3239 ) {
3240 /* we only update w->prev on actual differences */
3241 /* in case we test more often than invoke the callback, */
3242 /* to ensure that prev is always different to attr */
3243 w->prev = prev;
3244
2623 #if EV_USE_INOTIFY 3245 #if EV_USE_INOTIFY
3246 if (fs_fd >= 0)
3247 {
2624 infy_del (EV_A_ w); 3248 infy_del (EV_A_ w);
2625 infy_add (EV_A_ w); 3249 infy_add (EV_A_ w);
2626 ev_stat_stat (EV_A_ w); /* avoid race... */ 3250 ev_stat_stat (EV_A_ w); /* avoid race... */
3251 }
2627 #endif 3252 #endif
2628 3253
2629 ev_feed_event (EV_A_ w, EV_STAT); 3254 ev_feed_event (EV_A_ w, EV_STAT);
2630 } 3255 }
2631} 3256}
… …
2634ev_stat_start (EV_P_ ev_stat *w) 3259ev_stat_start (EV_P_ ev_stat *w)
2635{ 3260{
2636 if (expect_false (ev_is_active (w))) 3261 if (expect_false (ev_is_active (w)))
2637 return; 3262 return;
2638 3263
2639 /* since we use memcmp, we need to clear any padding data etc. */
2640 memset (&w->prev, 0, sizeof (ev_statdata));
2641 memset (&w->attr, 0, sizeof (ev_statdata));
2642
2643 ev_stat_stat (EV_A_ w); 3264 ev_stat_stat (EV_A_ w);
2644 3265
3266 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2645 if (w->interval < MIN_STAT_INTERVAL) 3267 w->interval = MIN_STAT_INTERVAL;
2646 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2647 3268
2648 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3269 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2649 ev_set_priority (&w->timer, ev_priority (w)); 3270 ev_set_priority (&w->timer, ev_priority (w));
2650 3271
2651#if EV_USE_INOTIFY 3272#if EV_USE_INOTIFY
2652 infy_init (EV_A); 3273 infy_init (EV_A);
2653 3274
2654 if (fs_fd >= 0) 3275 if (fs_fd >= 0)
2655 infy_add (EV_A_ w); 3276 infy_add (EV_A_ w);
2656 else 3277 else
2657#endif 3278#endif
3279 {
2658 ev_timer_start (EV_A_ &w->timer); 3280 ev_timer_again (EV_A_ &w->timer);
3281 ev_unref (EV_A);
3282 }
2659 3283
2660 ev_start (EV_A_ (W)w, 1); 3284 ev_start (EV_A_ (W)w, 1);
2661 3285
2662 EV_FREQUENT_CHECK; 3286 EV_FREQUENT_CHECK;
2663} 3287}
… …
2672 EV_FREQUENT_CHECK; 3296 EV_FREQUENT_CHECK;
2673 3297
2674#if EV_USE_INOTIFY 3298#if EV_USE_INOTIFY
2675 infy_del (EV_A_ w); 3299 infy_del (EV_A_ w);
2676#endif 3300#endif
3301
3302 if (ev_is_active (&w->timer))
3303 {
3304 ev_ref (EV_A);
2677 ev_timer_stop (EV_A_ &w->timer); 3305 ev_timer_stop (EV_A_ &w->timer);
3306 }
2678 3307
2679 ev_stop (EV_A_ (W)w); 3308 ev_stop (EV_A_ (W)w);
2680 3309
2681 EV_FREQUENT_CHECK; 3310 EV_FREQUENT_CHECK;
2682} 3311}
… …
2727 3356
2728 EV_FREQUENT_CHECK; 3357 EV_FREQUENT_CHECK;
2729} 3358}
2730#endif 3359#endif
2731 3360
3361#if EV_PREPARE_ENABLE
2732void 3362void
2733ev_prepare_start (EV_P_ ev_prepare *w) 3363ev_prepare_start (EV_P_ ev_prepare *w)
2734{ 3364{
2735 if (expect_false (ev_is_active (w))) 3365 if (expect_false (ev_is_active (w)))
2736 return; 3366 return;
… …
2762 3392
2763 ev_stop (EV_A_ (W)w); 3393 ev_stop (EV_A_ (W)w);
2764 3394
2765 EV_FREQUENT_CHECK; 3395 EV_FREQUENT_CHECK;
2766} 3396}
3397#endif
2767 3398
3399#if EV_CHECK_ENABLE
2768void 3400void
2769ev_check_start (EV_P_ ev_check *w) 3401ev_check_start (EV_P_ ev_check *w)
2770{ 3402{
2771 if (expect_false (ev_is_active (w))) 3403 if (expect_false (ev_is_active (w)))
2772 return; 3404 return;
… …
2798 3430
2799 ev_stop (EV_A_ (W)w); 3431 ev_stop (EV_A_ (W)w);
2800 3432
2801 EV_FREQUENT_CHECK; 3433 EV_FREQUENT_CHECK;
2802} 3434}
3435#endif
2803 3436
2804#if EV_EMBED_ENABLE 3437#if EV_EMBED_ENABLE
2805void noinline 3438void noinline
2806ev_embed_sweep (EV_P_ ev_embed *w) 3439ev_embed_sweep (EV_P_ ev_embed *w)
2807{ 3440{
2808 ev_loop (w->other, EVLOOP_NONBLOCK); 3441 ev_run (w->other, EVRUN_NOWAIT);
2809} 3442}
2810 3443
2811static void 3444static void
2812embed_io_cb (EV_P_ ev_io *io, int revents) 3445embed_io_cb (EV_P_ ev_io *io, int revents)
2813{ 3446{
2814 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3447 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2815 3448
2816 if (ev_cb (w)) 3449 if (ev_cb (w))
2817 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3450 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2818 else 3451 else
2819 ev_loop (w->other, EVLOOP_NONBLOCK); 3452 ev_run (w->other, EVRUN_NOWAIT);
2820} 3453}
2821 3454
2822static void 3455static void
2823embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3456embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2824{ 3457{
2825 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3458 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2826 3459
2827 { 3460 {
2828 struct ev_loop *loop = w->other; 3461 EV_P = w->other;
2829 3462
2830 while (fdchangecnt) 3463 while (fdchangecnt)
2831 { 3464 {
2832 fd_reify (EV_A); 3465 fd_reify (EV_A);
2833 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3466 ev_run (EV_A_ EVRUN_NOWAIT);
2834 } 3467 }
2835 } 3468 }
2836} 3469}
2837 3470
2838static void 3471static void
2839embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3472embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2840{ 3473{
2841 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3474 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2842 3475
3476 ev_embed_stop (EV_A_ w);
3477
2843 { 3478 {
2844 struct ev_loop *loop = w->other; 3479 EV_P = w->other;
2845 3480
2846 ev_loop_fork (EV_A); 3481 ev_loop_fork (EV_A);
3482 ev_run (EV_A_ EVRUN_NOWAIT);
2847 } 3483 }
3484
3485 ev_embed_start (EV_A_ w);
2848} 3486}
2849 3487
2850#if 0 3488#if 0
2851static void 3489static void
2852embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3490embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2860{ 3498{
2861 if (expect_false (ev_is_active (w))) 3499 if (expect_false (ev_is_active (w)))
2862 return; 3500 return;
2863 3501
2864 { 3502 {
2865 struct ev_loop *loop = w->other; 3503 EV_P = w->other;
2866 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3504 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2867 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3505 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2868 } 3506 }
2869 3507
2870 EV_FREQUENT_CHECK; 3508 EV_FREQUENT_CHECK;
2871 3509
… …
2897 3535
2898 ev_io_stop (EV_A_ &w->io); 3536 ev_io_stop (EV_A_ &w->io);
2899 ev_prepare_stop (EV_A_ &w->prepare); 3537 ev_prepare_stop (EV_A_ &w->prepare);
2900 ev_fork_stop (EV_A_ &w->fork); 3538 ev_fork_stop (EV_A_ &w->fork);
2901 3539
3540 ev_stop (EV_A_ (W)w);
3541
2902 EV_FREQUENT_CHECK; 3542 EV_FREQUENT_CHECK;
2903} 3543}
2904#endif 3544#endif
2905 3545
2906#if EV_FORK_ENABLE 3546#if EV_FORK_ENABLE
… …
2939 3579
2940 EV_FREQUENT_CHECK; 3580 EV_FREQUENT_CHECK;
2941} 3581}
2942#endif 3582#endif
2943 3583
2944#if EV_ASYNC_ENABLE 3584#if EV_CLEANUP_ENABLE
2945void 3585void
2946ev_async_start (EV_P_ ev_async *w) 3586ev_cleanup_start (EV_P_ ev_cleanup *w)
2947{ 3587{
2948 if (expect_false (ev_is_active (w))) 3588 if (expect_false (ev_is_active (w)))
2949 return; 3589 return;
3590
3591 EV_FREQUENT_CHECK;
3592
3593 ev_start (EV_A_ (W)w, ++cleanupcnt);
3594 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3595 cleanups [cleanupcnt - 1] = w;
3596
3597 /* cleanup watchers should never keep a refcount on the loop */
3598 ev_unref (EV_A);
3599 EV_FREQUENT_CHECK;
3600}
3601
3602void
3603ev_cleanup_stop (EV_P_ ev_cleanup *w)
3604{
3605 clear_pending (EV_A_ (W)w);
3606 if (expect_false (!ev_is_active (w)))
3607 return;
3608
3609 EV_FREQUENT_CHECK;
3610 ev_ref (EV_A);
3611
3612 {
3613 int active = ev_active (w);
3614
3615 cleanups [active - 1] = cleanups [--cleanupcnt];
3616 ev_active (cleanups [active - 1]) = active;
3617 }
3618
3619 ev_stop (EV_A_ (W)w);
3620
3621 EV_FREQUENT_CHECK;
3622}
3623#endif
3624
3625#if EV_ASYNC_ENABLE
3626void
3627ev_async_start (EV_P_ ev_async *w)
3628{
3629 if (expect_false (ev_is_active (w)))
3630 return;
3631
3632 w->sent = 0;
2950 3633
2951 evpipe_init (EV_A); 3634 evpipe_init (EV_A);
2952 3635
2953 EV_FREQUENT_CHECK; 3636 EV_FREQUENT_CHECK;
2954 3637
… …
2982 3665
2983void 3666void
2984ev_async_send (EV_P_ ev_async *w) 3667ev_async_send (EV_P_ ev_async *w)
2985{ 3668{
2986 w->sent = 1; 3669 w->sent = 1;
2987 evpipe_write (EV_A_ &gotasync); 3670 evpipe_write (EV_A_ &async_pending);
2988} 3671}
2989#endif 3672#endif
2990 3673
2991/*****************************************************************************/ 3674/*****************************************************************************/
2992 3675
… …
3012} 3695}
3013 3696
3014static void 3697static void
3015once_cb_io (EV_P_ ev_io *w, int revents) 3698once_cb_io (EV_P_ ev_io *w, int revents)
3016{ 3699{
3017 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3700 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3701
3702 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
3018} 3703}
3019 3704
3020static void 3705static void
3021once_cb_to (EV_P_ ev_timer *w, int revents) 3706once_cb_to (EV_P_ ev_timer *w, int revents)
3022{ 3707{
3023 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3708 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3709
3710 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3024} 3711}
3025 3712
3026void 3713void
3027ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3714ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
3028{ 3715{
3029 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3716 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3030 3717
3031 if (expect_false (!once)) 3718 if (expect_false (!once))
3032 { 3719 {
3033 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3720 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3034 return; 3721 return;
3035 } 3722 }
3036 3723
3037 once->cb = cb; 3724 once->cb = cb;
3038 once->arg = arg; 3725 once->arg = arg;
… …
3050 ev_timer_set (&once->to, timeout, 0.); 3737 ev_timer_set (&once->to, timeout, 0.);
3051 ev_timer_start (EV_A_ &once->to); 3738 ev_timer_start (EV_A_ &once->to);
3052 } 3739 }
3053} 3740}
3054 3741
3742/*****************************************************************************/
3743
3744#if EV_WALK_ENABLE
3745void
3746ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3747{
3748 int i, j;
3749 ev_watcher_list *wl, *wn;
3750
3751 if (types & (EV_IO | EV_EMBED))
3752 for (i = 0; i < anfdmax; ++i)
3753 for (wl = anfds [i].head; wl; )
3754 {
3755 wn = wl->next;
3756
3757#if EV_EMBED_ENABLE
3758 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3759 {
3760 if (types & EV_EMBED)
3761 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3762 }
3763 else
3764#endif
3765#if EV_USE_INOTIFY
3766 if (ev_cb ((ev_io *)wl) == infy_cb)
3767 ;
3768 else
3769#endif
3770 if ((ev_io *)wl != &pipe_w)
3771 if (types & EV_IO)
3772 cb (EV_A_ EV_IO, wl);
3773
3774 wl = wn;
3775 }
3776
3777 if (types & (EV_TIMER | EV_STAT))
3778 for (i = timercnt + HEAP0; i-- > HEAP0; )
3779#if EV_STAT_ENABLE
3780 /*TODO: timer is not always active*/
3781 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3782 {
3783 if (types & EV_STAT)
3784 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3785 }
3786 else
3787#endif
3788 if (types & EV_TIMER)
3789 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3790
3791#if EV_PERIODIC_ENABLE
3792 if (types & EV_PERIODIC)
3793 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3794 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3795#endif
3796
3797#if EV_IDLE_ENABLE
3798 if (types & EV_IDLE)
3799 for (j = NUMPRI; i--; )
3800 for (i = idlecnt [j]; i--; )
3801 cb (EV_A_ EV_IDLE, idles [j][i]);
3802#endif
3803
3804#if EV_FORK_ENABLE
3805 if (types & EV_FORK)
3806 for (i = forkcnt; i--; )
3807 if (ev_cb (forks [i]) != embed_fork_cb)
3808 cb (EV_A_ EV_FORK, forks [i]);
3809#endif
3810
3811#if EV_ASYNC_ENABLE
3812 if (types & EV_ASYNC)
3813 for (i = asynccnt; i--; )
3814 cb (EV_A_ EV_ASYNC, asyncs [i]);
3815#endif
3816
3817#if EV_PREPARE_ENABLE
3818 if (types & EV_PREPARE)
3819 for (i = preparecnt; i--; )
3820# if EV_EMBED_ENABLE
3821 if (ev_cb (prepares [i]) != embed_prepare_cb)
3822# endif
3823 cb (EV_A_ EV_PREPARE, prepares [i]);
3824#endif
3825
3826#if EV_CHECK_ENABLE
3827 if (types & EV_CHECK)
3828 for (i = checkcnt; i--; )
3829 cb (EV_A_ EV_CHECK, checks [i]);
3830#endif
3831
3832#if EV_SIGNAL_ENABLE
3833 if (types & EV_SIGNAL)
3834 for (i = 0; i < EV_NSIG - 1; ++i)
3835 for (wl = signals [i].head; wl; )
3836 {
3837 wn = wl->next;
3838 cb (EV_A_ EV_SIGNAL, wl);
3839 wl = wn;
3840 }
3841#endif
3842
3843#if EV_CHILD_ENABLE
3844 if (types & EV_CHILD)
3845 for (i = (EV_PID_HASHSIZE); i--; )
3846 for (wl = childs [i]; wl; )
3847 {
3848 wn = wl->next;
3849 cb (EV_A_ EV_CHILD, wl);
3850 wl = wn;
3851 }
3852#endif
3853/* EV_STAT 0x00001000 /* stat data changed */
3854/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3855}
3856#endif
3857
3055#if EV_MULTIPLICITY 3858#if EV_MULTIPLICITY
3056 #include "ev_wrap.h" 3859 #include "ev_wrap.h"
3057#endif 3860#endif
3058 3861
3059#ifdef __cplusplus 3862EV_CPP(})
3060}
3061#endif
3062 3863

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