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Comparing libev/ev.c (file contents):
Revision 1.266 by root, Fri Oct 24 08:15:33 2008 UTC vs.
Revision 1.366 by root, Mon Jan 10 01:58:54 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
130# endif 157# endif
131 158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
… …
160# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 192# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
164# endif 195# endif
196# undef EV_AVOID_STDIO
165#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
166 206
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
236
237#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else
241# define EV_USE_CLOCK_SYSCALL 0
242# endif
243#endif
168 244
169#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 248# else
173# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
174# endif 250# endif
175#endif 251#endif
176 252
177#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 255#endif
180 256
181#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 260# else
185# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
186# endif 262# endif
187#endif 263#endif
188 264
189#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 267#endif
192 268
193#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
194# ifdef _WIN32 270# ifdef _WIN32
195# define EV_USE_POLL 0 271# define EV_USE_POLL 0
196# else 272# else
197# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 274# endif
199#endif 275#endif
200 276
201#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 280# else
205# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
206# endif 282# endif
207#endif 283#endif
208 284
… …
214# define EV_USE_PORT 0 290# define EV_USE_PORT 0
215#endif 291#endif
216 292
217#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 296# else
221# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
222# endif 298# endif
223#endif 299#endif
224 300
225#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 303#endif
232 304
233#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 307#endif
240 308
241#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 312# else
245# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
314# endif
315#endif
316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
246# endif 322# endif
247#endif 323#endif
248 324
249#if 0 /* debugging */ 325#if 0 /* debugging */
250# define EV_VERIFY 3 326# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
253#endif 329#endif
254 330
255#ifndef EV_VERIFY 331#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 333#endif
258 334
259#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 337#endif
262 338
263#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
265#endif 355#endif
266 356
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
268 364
269#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
272#endif 368#endif
… …
286# include <sys/select.h> 382# include <sys/select.h>
287# endif 383# endif
288#endif 384#endif
289 385
290#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
291# include <sys/utsname.h> 387# include <sys/statfs.h>
292# include <sys/inotify.h> 388# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 392# define EV_USE_INOTIFY 0
… …
302#endif 398#endif
303 399
304#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
305/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306# include <stdint.h> 402# include <stdint.h>
307# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
308extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
309# endif 405# endif
310int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 407# ifdef O_CLOEXEC
312} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
313# endif 412# endif
413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430
431struct signalfd_siginfo
432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
314#endif 436#endif
315 437
316/**/ 438/**/
317 439
318#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 442#else
321# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
322#endif 444#endif
323 445
324/* 446/*
… …
331 */ 453 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
333 455
334#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
335#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 458
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
337 461
338#if __GNUC__ >= 4 462#if __GNUC__ >= 4
339# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
340# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
341#else 465#else
… …
348 472
349#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
351#define inline_size static inline 475#define inline_size static inline
352 476
353#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
354# define inline_speed static noinline 480# define inline_speed static noinline
481#endif
482
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484
485#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0)
355#else 487#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
361 490
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
364 493
365typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
368 497
369#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
371 500
501#if EV_USE_REALTIME
502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
503/* giving it a reasonably high chance of working on typical architectures */
504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
505#endif
506
372#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
509#endif
510
511#ifndef EV_FD_TO_WIN32_HANDLE
512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
513#endif
514#ifndef EV_WIN32_HANDLE_TO_FD
515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
516#endif
517#ifndef EV_WIN32_CLOSE_FD
518# define EV_WIN32_CLOSE_FD(fd) close (fd)
376#endif 519#endif
377 520
378#ifdef _WIN32 521#ifdef _WIN32
379# include "ev_win32.c" 522# include "ev_win32.c"
380#endif 523#endif
381 524
382/*****************************************************************************/ 525/*****************************************************************************/
383 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
576
384static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
385 578
386void 579void
387ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
388{ 581{
389 syserr_cb = cb; 582 syserr_cb = cb;
390} 583}
391 584
392static void noinline 585static void noinline
393syserr (const char *msg) 586ev_syserr (const char *msg)
394{ 587{
395 if (!msg) 588 if (!msg)
396 msg = "(libev) system error"; 589 msg = "(libev) system error";
397 590
398 if (syserr_cb) 591 if (syserr_cb)
399 syserr_cb (msg); 592 syserr_cb (msg);
400 else 593 else
401 { 594 {
595#if EV_AVOID_STDIO
596 ev_printerr (msg);
597 ev_printerr (": ");
598 ev_printerr (strerror (errno));
599 ev_printerr ("\n");
600#else
402 perror (msg); 601 perror (msg);
602#endif
403 abort (); 603 abort ();
404 } 604 }
405} 605}
406 606
407static void * 607static void *
408ev_realloc_emul (void *ptr, long size) 608ev_realloc_emul (void *ptr, long size)
409{ 609{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
410 /* some systems, notably openbsd and darwin, fail to properly 613 /* some systems, notably openbsd and darwin, fail to properly
411 * implement realloc (x, 0) (as required by both ansi c-98 and 614 * implement realloc (x, 0) (as required by both ansi c-89 and
412 * the single unix specification, so work around them here. 615 * the single unix specification, so work around them here.
413 */ 616 */
414 617
415 if (size) 618 if (size)
416 return realloc (ptr, size); 619 return realloc (ptr, size);
417 620
418 free (ptr); 621 free (ptr);
419 return 0; 622 return 0;
623#endif
420} 624}
421 625
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
423 627
424void 628void
… …
432{ 636{
433 ptr = alloc (ptr, size); 637 ptr = alloc (ptr, size);
434 638
435 if (!ptr && size) 639 if (!ptr && size)
436 { 640 {
641#if EV_AVOID_STDIO
642 ev_printerr ("(libev) memory allocation failed, aborting.\n");
643#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 644 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
645#endif
438 abort (); 646 abort ();
439 } 647 }
440 648
441 return ptr; 649 return ptr;
442} 650}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 652#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 653#define ev_free(ptr) ev_realloc ((ptr), 0)
446 654
447/*****************************************************************************/ 655/*****************************************************************************/
448 656
657/* set in reify when reification needed */
658#define EV_ANFD_REIFY 1
659
660/* file descriptor info structure */
449typedef struct 661typedef struct
450{ 662{
451 WL head; 663 WL head;
452 unsigned char events; 664 unsigned char events; /* the events watched for */
453 unsigned char reify; 665 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 666 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
455 unsigned char unused; /* currently unused padding */ 667 unsigned char unused;
668#if EV_USE_EPOLL
669 unsigned int egen; /* generation counter to counter epoll bugs */
670#endif
456#if EV_SELECT_IS_WINSOCKET 671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
457 SOCKET handle; 672 SOCKET handle;
458#endif 673#endif
674#if EV_USE_IOCP
675 OVERLAPPED or, ow;
676#endif
459} ANFD; 677} ANFD;
460 678
679/* stores the pending event set for a given watcher */
461typedef struct 680typedef struct
462{ 681{
463 W w; 682 W w;
464 int events; 683 int events; /* the pending event set for the given watcher */
465} ANPENDING; 684} ANPENDING;
466 685
467#if EV_USE_INOTIFY 686#if EV_USE_INOTIFY
468/* hash table entry per inotify-id */ 687/* hash table entry per inotify-id */
469typedef struct 688typedef struct
… …
472} ANFS; 691} ANFS;
473#endif 692#endif
474 693
475/* Heap Entry */ 694/* Heap Entry */
476#if EV_HEAP_CACHE_AT 695#if EV_HEAP_CACHE_AT
696 /* a heap element */
477 typedef struct { 697 typedef struct {
478 ev_tstamp at; 698 ev_tstamp at;
479 WT w; 699 WT w;
480 } ANHE; 700 } ANHE;
481 701
482 #define ANHE_w(he) (he).w /* access watcher, read-write */ 702 #define ANHE_w(he) (he).w /* access watcher, read-write */
483 #define ANHE_at(he) (he).at /* access cached at, read-only */ 703 #define ANHE_at(he) (he).at /* access cached at, read-only */
484 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 704 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
485#else 705#else
706 /* a heap element */
486 typedef WT ANHE; 707 typedef WT ANHE;
487 708
488 #define ANHE_w(he) (he) 709 #define ANHE_w(he) (he)
489 #define ANHE_at(he) (he)->at 710 #define ANHE_at(he) (he)->at
490 #define ANHE_at_cache(he) 711 #define ANHE_at_cache(he)
… …
514 735
515 static int ev_default_loop_ptr; 736 static int ev_default_loop_ptr;
516 737
517#endif 738#endif
518 739
740#if EV_FEATURE_API
741# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
742# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
743# define EV_INVOKE_PENDING invoke_cb (EV_A)
744#else
745# define EV_RELEASE_CB (void)0
746# define EV_ACQUIRE_CB (void)0
747# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
748#endif
749
750#define EVBREAK_RECURSE 0x80
751
519/*****************************************************************************/ 752/*****************************************************************************/
520 753
754#ifndef EV_HAVE_EV_TIME
521ev_tstamp 755ev_tstamp
522ev_time (void) 756ev_time (void)
523{ 757{
524#if EV_USE_REALTIME 758#if EV_USE_REALTIME
759 if (expect_true (have_realtime))
760 {
525 struct timespec ts; 761 struct timespec ts;
526 clock_gettime (CLOCK_REALTIME, &ts); 762 clock_gettime (CLOCK_REALTIME, &ts);
527 return ts.tv_sec + ts.tv_nsec * 1e-9; 763 return ts.tv_sec + ts.tv_nsec * 1e-9;
528#else 764 }
765#endif
766
529 struct timeval tv; 767 struct timeval tv;
530 gettimeofday (&tv, 0); 768 gettimeofday (&tv, 0);
531 return tv.tv_sec + tv.tv_usec * 1e-6; 769 return tv.tv_sec + tv.tv_usec * 1e-6;
532#endif
533} 770}
771#endif
534 772
535ev_tstamp inline_size 773inline_size ev_tstamp
536get_clock (void) 774get_clock (void)
537{ 775{
538#if EV_USE_MONOTONIC 776#if EV_USE_MONOTONIC
539 if (expect_true (have_monotonic)) 777 if (expect_true (have_monotonic))
540 { 778 {
… …
561 if (delay > 0.) 799 if (delay > 0.)
562 { 800 {
563#if EV_USE_NANOSLEEP 801#if EV_USE_NANOSLEEP
564 struct timespec ts; 802 struct timespec ts;
565 803
566 ts.tv_sec = (time_t)delay; 804 EV_TS_SET (ts, delay);
567 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
568
569 nanosleep (&ts, 0); 805 nanosleep (&ts, 0);
570#elif defined(_WIN32) 806#elif defined(_WIN32)
571 Sleep ((unsigned long)(delay * 1e3)); 807 Sleep ((unsigned long)(delay * 1e3));
572#else 808#else
573 struct timeval tv; 809 struct timeval tv;
574 810
575 tv.tv_sec = (time_t)delay;
576 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
577
578 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 811 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
579 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 812 /* something not guaranteed by newer posix versions, but guaranteed */
580 /* by older ones */ 813 /* by older ones */
814 EV_TV_SET (tv, delay);
581 select (0, 0, 0, 0, &tv); 815 select (0, 0, 0, 0, &tv);
582#endif 816#endif
583 } 817 }
584} 818}
585 819
586/*****************************************************************************/ 820/*****************************************************************************/
587 821
588#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 822#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
589 823
590int inline_size 824/* find a suitable new size for the given array, */
825/* hopefully by rounding to a nice-to-malloc size */
826inline_size int
591array_nextsize (int elem, int cur, int cnt) 827array_nextsize (int elem, int cur, int cnt)
592{ 828{
593 int ncur = cur + 1; 829 int ncur = cur + 1;
594 830
595 do 831 do
… …
636 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 872 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
637 } 873 }
638#endif 874#endif
639 875
640#define array_free(stem, idx) \ 876#define array_free(stem, idx) \
641 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 877 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
642 878
643/*****************************************************************************/ 879/*****************************************************************************/
880
881/* dummy callback for pending events */
882static void noinline
883pendingcb (EV_P_ ev_prepare *w, int revents)
884{
885}
644 886
645void noinline 887void noinline
646ev_feed_event (EV_P_ void *w, int revents) 888ev_feed_event (EV_P_ void *w, int revents)
647{ 889{
648 W w_ = (W)w; 890 W w_ = (W)w;
… …
657 pendings [pri][w_->pending - 1].w = w_; 899 pendings [pri][w_->pending - 1].w = w_;
658 pendings [pri][w_->pending - 1].events = revents; 900 pendings [pri][w_->pending - 1].events = revents;
659 } 901 }
660} 902}
661 903
662void inline_speed 904inline_speed void
905feed_reverse (EV_P_ W w)
906{
907 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
908 rfeeds [rfeedcnt++] = w;
909}
910
911inline_size void
912feed_reverse_done (EV_P_ int revents)
913{
914 do
915 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
916 while (rfeedcnt);
917}
918
919inline_speed void
663queue_events (EV_P_ W *events, int eventcnt, int type) 920queue_events (EV_P_ W *events, int eventcnt, int type)
664{ 921{
665 int i; 922 int i;
666 923
667 for (i = 0; i < eventcnt; ++i) 924 for (i = 0; i < eventcnt; ++i)
668 ev_feed_event (EV_A_ events [i], type); 925 ev_feed_event (EV_A_ events [i], type);
669} 926}
670 927
671/*****************************************************************************/ 928/*****************************************************************************/
672 929
673void inline_speed 930inline_speed void
674fd_event (EV_P_ int fd, int revents) 931fd_event_nocheck (EV_P_ int fd, int revents)
675{ 932{
676 ANFD *anfd = anfds + fd; 933 ANFD *anfd = anfds + fd;
677 ev_io *w; 934 ev_io *w;
678 935
679 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 936 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
683 if (ev) 940 if (ev)
684 ev_feed_event (EV_A_ (W)w, ev); 941 ev_feed_event (EV_A_ (W)w, ev);
685 } 942 }
686} 943}
687 944
945/* do not submit kernel events for fds that have reify set */
946/* because that means they changed while we were polling for new events */
947inline_speed void
948fd_event (EV_P_ int fd, int revents)
949{
950 ANFD *anfd = anfds + fd;
951
952 if (expect_true (!anfd->reify))
953 fd_event_nocheck (EV_A_ fd, revents);
954}
955
688void 956void
689ev_feed_fd_event (EV_P_ int fd, int revents) 957ev_feed_fd_event (EV_P_ int fd, int revents)
690{ 958{
691 if (fd >= 0 && fd < anfdmax) 959 if (fd >= 0 && fd < anfdmax)
692 fd_event (EV_A_ fd, revents); 960 fd_event_nocheck (EV_A_ fd, revents);
693} 961}
694 962
695void inline_size 963/* make sure the external fd watch events are in-sync */
964/* with the kernel/libev internal state */
965inline_size void
696fd_reify (EV_P) 966fd_reify (EV_P)
697{ 967{
698 int i; 968 int i;
699 969
700 for (i = 0; i < fdchangecnt; ++i) 970 for (i = 0; i < fdchangecnt; ++i)
701 { 971 {
702 int fd = fdchanges [i]; 972 int fd = fdchanges [i];
703 ANFD *anfd = anfds + fd; 973 ANFD *anfd = anfds + fd;
704 ev_io *w; 974 ev_io *w;
705 975
706 unsigned char events = 0; 976 unsigned char o_events = anfd->events;
977 unsigned char o_reify = anfd->reify;
707 978
708 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 979 anfd->reify = 0;
709 events |= (unsigned char)w->events;
710 980
711#if EV_SELECT_IS_WINSOCKET 981#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
712 if (events) 982 if (o_reify & EV__IOFDSET)
713 { 983 {
714 unsigned long arg; 984 unsigned long arg;
715 #ifdef EV_FD_TO_WIN32_HANDLE
716 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 985 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
717 #else
718 anfd->handle = _get_osfhandle (fd);
719 #endif
720 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 986 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
987 printf ("oi %d %x\n", fd, anfd->handle);//D
721 } 988 }
722#endif 989#endif
723 990
991 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
724 { 992 {
725 unsigned char o_events = anfd->events;
726 unsigned char o_reify = anfd->reify;
727
728 anfd->reify = 0;
729 anfd->events = events; 993 anfd->events = 0;
730 994
731 if (o_events != events || o_reify & EV_IOFDSET) 995 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
996 anfd->events |= (unsigned char)w->events;
997
998 if (o_events != anfd->events)
999 o_reify = EV__IOFDSET; /* actually |= */
1000 }
1001
1002 if (o_reify & EV__IOFDSET)
732 backend_modify (EV_A_ fd, o_events, events); 1003 backend_modify (EV_A_ fd, o_events, anfd->events);
733 }
734 } 1004 }
735 1005
736 fdchangecnt = 0; 1006 fdchangecnt = 0;
737} 1007}
738 1008
739void inline_size 1009/* something about the given fd changed */
1010inline_size void
740fd_change (EV_P_ int fd, int flags) 1011fd_change (EV_P_ int fd, int flags)
741{ 1012{
742 unsigned char reify = anfds [fd].reify; 1013 unsigned char reify = anfds [fd].reify;
743 anfds [fd].reify |= flags; 1014 anfds [fd].reify |= flags;
744 1015
… …
748 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1019 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
749 fdchanges [fdchangecnt - 1] = fd; 1020 fdchanges [fdchangecnt - 1] = fd;
750 } 1021 }
751} 1022}
752 1023
753void inline_speed 1024/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1025inline_speed void
754fd_kill (EV_P_ int fd) 1026fd_kill (EV_P_ int fd)
755{ 1027{
756 ev_io *w; 1028 ev_io *w;
757 1029
758 while ((w = (ev_io *)anfds [fd].head)) 1030 while ((w = (ev_io *)anfds [fd].head))
… …
760 ev_io_stop (EV_A_ w); 1032 ev_io_stop (EV_A_ w);
761 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1033 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
762 } 1034 }
763} 1035}
764 1036
765int inline_size 1037/* check whether the given fd is actually valid, for error recovery */
1038inline_size int
766fd_valid (int fd) 1039fd_valid (int fd)
767{ 1040{
768#ifdef _WIN32 1041#ifdef _WIN32
769 return _get_osfhandle (fd) != -1; 1042 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
770#else 1043#else
771 return fcntl (fd, F_GETFD) != -1; 1044 return fcntl (fd, F_GETFD) != -1;
772#endif 1045#endif
773} 1046}
774 1047
… …
792 1065
793 for (fd = anfdmax; fd--; ) 1066 for (fd = anfdmax; fd--; )
794 if (anfds [fd].events) 1067 if (anfds [fd].events)
795 { 1068 {
796 fd_kill (EV_A_ fd); 1069 fd_kill (EV_A_ fd);
797 return; 1070 break;
798 } 1071 }
799} 1072}
800 1073
801/* usually called after fork if backend needs to re-arm all fds from scratch */ 1074/* usually called after fork if backend needs to re-arm all fds from scratch */
802static void noinline 1075static void noinline
… …
806 1079
807 for (fd = 0; fd < anfdmax; ++fd) 1080 for (fd = 0; fd < anfdmax; ++fd)
808 if (anfds [fd].events) 1081 if (anfds [fd].events)
809 { 1082 {
810 anfds [fd].events = 0; 1083 anfds [fd].events = 0;
1084 anfds [fd].emask = 0;
811 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1085 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
812 } 1086 }
813} 1087}
814 1088
1089/* used to prepare libev internal fd's */
1090/* this is not fork-safe */
1091inline_speed void
1092fd_intern (int fd)
1093{
1094#ifdef _WIN32
1095 unsigned long arg = 1;
1096 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102
815/*****************************************************************************/ 1103/*****************************************************************************/
816 1104
817/* 1105/*
818 * the heap functions want a real array index. array index 0 uis guaranteed to not 1106 * the heap functions want a real array index. array index 0 is guaranteed to not
819 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1107 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
820 * the branching factor of the d-tree. 1108 * the branching factor of the d-tree.
821 */ 1109 */
822 1110
823/* 1111/*
… …
832#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1120#define HEAP0 (DHEAP - 1) /* index of first element in heap */
833#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1121#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
834#define UPHEAP_DONE(p,k) ((p) == (k)) 1122#define UPHEAP_DONE(p,k) ((p) == (k))
835 1123
836/* away from the root */ 1124/* away from the root */
837void inline_speed 1125inline_speed void
838downheap (ANHE *heap, int N, int k) 1126downheap (ANHE *heap, int N, int k)
839{ 1127{
840 ANHE he = heap [k]; 1128 ANHE he = heap [k];
841 ANHE *E = heap + N + HEAP0; 1129 ANHE *E = heap + N + HEAP0;
842 1130
… …
882#define HEAP0 1 1170#define HEAP0 1
883#define HPARENT(k) ((k) >> 1) 1171#define HPARENT(k) ((k) >> 1)
884#define UPHEAP_DONE(p,k) (!(p)) 1172#define UPHEAP_DONE(p,k) (!(p))
885 1173
886/* away from the root */ 1174/* away from the root */
887void inline_speed 1175inline_speed void
888downheap (ANHE *heap, int N, int k) 1176downheap (ANHE *heap, int N, int k)
889{ 1177{
890 ANHE he = heap [k]; 1178 ANHE he = heap [k];
891 1179
892 for (;;) 1180 for (;;)
893 { 1181 {
894 int c = k << 1; 1182 int c = k << 1;
895 1183
896 if (c > N + HEAP0 - 1) 1184 if (c >= N + HEAP0)
897 break; 1185 break;
898 1186
899 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1187 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
900 ? 1 : 0; 1188 ? 1 : 0;
901 1189
… …
912 ev_active (ANHE_w (he)) = k; 1200 ev_active (ANHE_w (he)) = k;
913} 1201}
914#endif 1202#endif
915 1203
916/* towards the root */ 1204/* towards the root */
917void inline_speed 1205inline_speed void
918upheap (ANHE *heap, int k) 1206upheap (ANHE *heap, int k)
919{ 1207{
920 ANHE he = heap [k]; 1208 ANHE he = heap [k];
921 1209
922 for (;;) 1210 for (;;)
… …
933 1221
934 heap [k] = he; 1222 heap [k] = he;
935 ev_active (ANHE_w (he)) = k; 1223 ev_active (ANHE_w (he)) = k;
936} 1224}
937 1225
938void inline_size 1226/* move an element suitably so it is in a correct place */
1227inline_size void
939adjustheap (ANHE *heap, int N, int k) 1228adjustheap (ANHE *heap, int N, int k)
940{ 1229{
941 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1230 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
942 upheap (heap, k); 1231 upheap (heap, k);
943 else 1232 else
944 downheap (heap, N, k); 1233 downheap (heap, N, k);
945} 1234}
946 1235
947/* rebuild the heap: this function is used only once and executed rarely */ 1236/* rebuild the heap: this function is used only once and executed rarely */
948void inline_size 1237inline_size void
949reheap (ANHE *heap, int N) 1238reheap (ANHE *heap, int N)
950{ 1239{
951 int i; 1240 int i;
952 1241
953 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1242 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
956 upheap (heap, i + HEAP0); 1245 upheap (heap, i + HEAP0);
957} 1246}
958 1247
959/*****************************************************************************/ 1248/*****************************************************************************/
960 1249
1250/* associate signal watchers to a signal signal */
961typedef struct 1251typedef struct
962{ 1252{
1253 EV_ATOMIC_T pending;
1254#if EV_MULTIPLICITY
1255 EV_P;
1256#endif
963 WL head; 1257 WL head;
964 EV_ATOMIC_T gotsig;
965} ANSIG; 1258} ANSIG;
966 1259
967static ANSIG *signals; 1260static ANSIG signals [EV_NSIG - 1];
968static int signalmax;
969
970static EV_ATOMIC_T gotsig;
971 1261
972/*****************************************************************************/ 1262/*****************************************************************************/
973 1263
974void inline_speed 1264#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
975fd_intern (int fd)
976{
977#ifdef _WIN32
978 unsigned long arg = 1;
979 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
980#else
981 fcntl (fd, F_SETFD, FD_CLOEXEC);
982 fcntl (fd, F_SETFL, O_NONBLOCK);
983#endif
984}
985 1265
986static void noinline 1266static void noinline
987evpipe_init (EV_P) 1267evpipe_init (EV_P)
988{ 1268{
989 if (!ev_is_active (&pipeev)) 1269 if (!ev_is_active (&pipe_w))
990 { 1270 {
991#if EV_USE_EVENTFD 1271# if EV_USE_EVENTFD
1272 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1273 if (evfd < 0 && errno == EINVAL)
992 if ((evfd = eventfd (0, 0)) >= 0) 1274 evfd = eventfd (0, 0);
1275
1276 if (evfd >= 0)
993 { 1277 {
994 evpipe [0] = -1; 1278 evpipe [0] = -1;
995 fd_intern (evfd); 1279 fd_intern (evfd); /* doing it twice doesn't hurt */
996 ev_io_set (&pipeev, evfd, EV_READ); 1280 ev_io_set (&pipe_w, evfd, EV_READ);
997 } 1281 }
998 else 1282 else
999#endif 1283# endif
1000 { 1284 {
1001 while (pipe (evpipe)) 1285 while (pipe (evpipe))
1002 syserr ("(libev) error creating signal/async pipe"); 1286 ev_syserr ("(libev) error creating signal/async pipe");
1003 1287
1004 fd_intern (evpipe [0]); 1288 fd_intern (evpipe [0]);
1005 fd_intern (evpipe [1]); 1289 fd_intern (evpipe [1]);
1006 ev_io_set (&pipeev, evpipe [0], EV_READ); 1290 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1007 } 1291 }
1008 1292
1009 ev_io_start (EV_A_ &pipeev); 1293 ev_io_start (EV_A_ &pipe_w);
1010 ev_unref (EV_A); /* watcher should not keep loop alive */ 1294 ev_unref (EV_A); /* watcher should not keep loop alive */
1011 } 1295 }
1012} 1296}
1013 1297
1014void inline_size 1298inline_size void
1015evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1299evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1016{ 1300{
1017 if (!*flag) 1301 if (!*flag)
1018 { 1302 {
1019 int old_errno = errno; /* save errno because write might clobber it */ 1303 int old_errno = errno; /* save errno because write might clobber it */
1304 char dummy;
1020 1305
1021 *flag = 1; 1306 *flag = 1;
1022 1307
1023#if EV_USE_EVENTFD 1308#if EV_USE_EVENTFD
1024 if (evfd >= 0) 1309 if (evfd >= 0)
… …
1026 uint64_t counter = 1; 1311 uint64_t counter = 1;
1027 write (evfd, &counter, sizeof (uint64_t)); 1312 write (evfd, &counter, sizeof (uint64_t));
1028 } 1313 }
1029 else 1314 else
1030#endif 1315#endif
1316 /* win32 people keep sending patches that change this write() to send() */
1317 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1318 /* so when you think this write should be a send instead, please find out */
1319 /* where your send() is from - it's definitely not the microsoft send, and */
1320 /* tell me. thank you. */
1031 write (evpipe [1], &old_errno, 1); 1321 write (evpipe [1], &dummy, 1);
1032 1322
1033 errno = old_errno; 1323 errno = old_errno;
1034 } 1324 }
1035} 1325}
1036 1326
1327/* called whenever the libev signal pipe */
1328/* got some events (signal, async) */
1037static void 1329static void
1038pipecb (EV_P_ ev_io *iow, int revents) 1330pipecb (EV_P_ ev_io *iow, int revents)
1039{ 1331{
1332 int i;
1333
1040#if EV_USE_EVENTFD 1334#if EV_USE_EVENTFD
1041 if (evfd >= 0) 1335 if (evfd >= 0)
1042 { 1336 {
1043 uint64_t counter; 1337 uint64_t counter;
1044 read (evfd, &counter, sizeof (uint64_t)); 1338 read (evfd, &counter, sizeof (uint64_t));
1045 } 1339 }
1046 else 1340 else
1047#endif 1341#endif
1048 { 1342 {
1049 char dummy; 1343 char dummy;
1344 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1050 read (evpipe [0], &dummy, 1); 1345 read (evpipe [0], &dummy, 1);
1051 } 1346 }
1052 1347
1053 if (gotsig && ev_is_default_loop (EV_A)) 1348 if (sig_pending)
1054 { 1349 {
1055 int signum; 1350 sig_pending = 0;
1056 gotsig = 0;
1057 1351
1058 for (signum = signalmax; signum--; ) 1352 for (i = EV_NSIG - 1; i--; )
1059 if (signals [signum].gotsig) 1353 if (expect_false (signals [i].pending))
1060 ev_feed_signal_event (EV_A_ signum + 1); 1354 ev_feed_signal_event (EV_A_ i + 1);
1061 } 1355 }
1062 1356
1063#if EV_ASYNC_ENABLE 1357#if EV_ASYNC_ENABLE
1064 if (gotasync) 1358 if (async_pending)
1065 { 1359 {
1066 int i; 1360 async_pending = 0;
1067 gotasync = 0;
1068 1361
1069 for (i = asynccnt; i--; ) 1362 for (i = asynccnt; i--; )
1070 if (asyncs [i]->sent) 1363 if (asyncs [i]->sent)
1071 { 1364 {
1072 asyncs [i]->sent = 0; 1365 asyncs [i]->sent = 0;
… …
1076#endif 1369#endif
1077} 1370}
1078 1371
1079/*****************************************************************************/ 1372/*****************************************************************************/
1080 1373
1374void
1375ev_feed_signal (int signum)
1376{
1377#if EV_MULTIPLICITY
1378 EV_P = signals [signum - 1].loop;
1379
1380 if (!EV_A)
1381 return;
1382#endif
1383
1384 signals [signum - 1].pending = 1;
1385 evpipe_write (EV_A_ &sig_pending);
1386}
1387
1081static void 1388static void
1082ev_sighandler (int signum) 1389ev_sighandler (int signum)
1083{ 1390{
1084#if EV_MULTIPLICITY
1085 struct ev_loop *loop = &default_loop_struct;
1086#endif
1087
1088#if _WIN32 1391#ifdef _WIN32
1089 signal (signum, ev_sighandler); 1392 signal (signum, ev_sighandler);
1090#endif 1393#endif
1091 1394
1092 signals [signum - 1].gotsig = 1; 1395 ev_feed_signal (signum);
1093 evpipe_write (EV_A_ &gotsig);
1094} 1396}
1095 1397
1096void noinline 1398void noinline
1097ev_feed_signal_event (EV_P_ int signum) 1399ev_feed_signal_event (EV_P_ int signum)
1098{ 1400{
1099 WL w; 1401 WL w;
1100 1402
1403 if (expect_false (signum <= 0 || signum > EV_NSIG))
1404 return;
1405
1406 --signum;
1407
1101#if EV_MULTIPLICITY 1408#if EV_MULTIPLICITY
1102 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1409 /* it is permissible to try to feed a signal to the wrong loop */
1103#endif 1410 /* or, likely more useful, feeding a signal nobody is waiting for */
1104 1411
1105 --signum; 1412 if (expect_false (signals [signum].loop != EV_A))
1106
1107 if (signum < 0 || signum >= signalmax)
1108 return; 1413 return;
1414#endif
1109 1415
1110 signals [signum].gotsig = 0; 1416 signals [signum].pending = 0;
1111 1417
1112 for (w = signals [signum].head; w; w = w->next) 1418 for (w = signals [signum].head; w; w = w->next)
1113 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1419 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1114} 1420}
1115 1421
1422#if EV_USE_SIGNALFD
1423static void
1424sigfdcb (EV_P_ ev_io *iow, int revents)
1425{
1426 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1427
1428 for (;;)
1429 {
1430 ssize_t res = read (sigfd, si, sizeof (si));
1431
1432 /* not ISO-C, as res might be -1, but works with SuS */
1433 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1434 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1435
1436 if (res < (ssize_t)sizeof (si))
1437 break;
1438 }
1439}
1440#endif
1441
1442#endif
1443
1116/*****************************************************************************/ 1444/*****************************************************************************/
1117 1445
1446#if EV_CHILD_ENABLE
1118static WL childs [EV_PID_HASHSIZE]; 1447static WL childs [EV_PID_HASHSIZE];
1119
1120#ifndef _WIN32
1121 1448
1122static ev_signal childev; 1449static ev_signal childev;
1123 1450
1124#ifndef WIFCONTINUED 1451#ifndef WIFCONTINUED
1125# define WIFCONTINUED(status) 0 1452# define WIFCONTINUED(status) 0
1126#endif 1453#endif
1127 1454
1128void inline_speed 1455/* handle a single child status event */
1456inline_speed void
1129child_reap (EV_P_ int chain, int pid, int status) 1457child_reap (EV_P_ int chain, int pid, int status)
1130{ 1458{
1131 ev_child *w; 1459 ev_child *w;
1132 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1460 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1133 1461
1134 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1462 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1135 { 1463 {
1136 if ((w->pid == pid || !w->pid) 1464 if ((w->pid == pid || !w->pid)
1137 && (!traced || (w->flags & 1))) 1465 && (!traced || (w->flags & 1)))
1138 { 1466 {
1139 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1467 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1146 1474
1147#ifndef WCONTINUED 1475#ifndef WCONTINUED
1148# define WCONTINUED 0 1476# define WCONTINUED 0
1149#endif 1477#endif
1150 1478
1479/* called on sigchld etc., calls waitpid */
1151static void 1480static void
1152childcb (EV_P_ ev_signal *sw, int revents) 1481childcb (EV_P_ ev_signal *sw, int revents)
1153{ 1482{
1154 int pid, status; 1483 int pid, status;
1155 1484
… …
1163 /* make sure we are called again until all children have been reaped */ 1492 /* make sure we are called again until all children have been reaped */
1164 /* we need to do it this way so that the callback gets called before we continue */ 1493 /* we need to do it this way so that the callback gets called before we continue */
1165 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1494 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1166 1495
1167 child_reap (EV_A_ pid, pid, status); 1496 child_reap (EV_A_ pid, pid, status);
1168 if (EV_PID_HASHSIZE > 1) 1497 if ((EV_PID_HASHSIZE) > 1)
1169 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1498 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1170} 1499}
1171 1500
1172#endif 1501#endif
1173 1502
1174/*****************************************************************************/ 1503/*****************************************************************************/
1175 1504
1505#if EV_USE_IOCP
1506# include "ev_iocp.c"
1507#endif
1176#if EV_USE_PORT 1508#if EV_USE_PORT
1177# include "ev_port.c" 1509# include "ev_port.c"
1178#endif 1510#endif
1179#if EV_USE_KQUEUE 1511#if EV_USE_KQUEUE
1180# include "ev_kqueue.c" 1512# include "ev_kqueue.c"
… …
1236 /* kqueue is borked on everything but netbsd apparently */ 1568 /* kqueue is borked on everything but netbsd apparently */
1237 /* it usually doesn't work correctly on anything but sockets and pipes */ 1569 /* it usually doesn't work correctly on anything but sockets and pipes */
1238 flags &= ~EVBACKEND_KQUEUE; 1570 flags &= ~EVBACKEND_KQUEUE;
1239#endif 1571#endif
1240#ifdef __APPLE__ 1572#ifdef __APPLE__
1241 // flags &= ~EVBACKEND_KQUEUE; for documentation 1573 /* only select works correctly on that "unix-certified" platform */
1242 flags &= ~EVBACKEND_POLL; 1574 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1575 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1576#endif
1577#ifdef __FreeBSD__
1578 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1243#endif 1579#endif
1244 1580
1245 return flags; 1581 return flags;
1246} 1582}
1247 1583
… …
1249ev_embeddable_backends (void) 1585ev_embeddable_backends (void)
1250{ 1586{
1251 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1587 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1252 1588
1253 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1589 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1254 /* please fix it and tell me how to detect the fix */ 1590 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1255 flags &= ~EVBACKEND_EPOLL; 1591 flags &= ~EVBACKEND_EPOLL;
1256 1592
1257 return flags; 1593 return flags;
1258} 1594}
1259 1595
1260unsigned int 1596unsigned int
1261ev_backend (EV_P) 1597ev_backend (EV_P)
1262{ 1598{
1263 return backend; 1599 return backend;
1264} 1600}
1265 1601
1602#if EV_FEATURE_API
1266unsigned int 1603unsigned int
1267ev_loop_count (EV_P) 1604ev_iteration (EV_P)
1268{ 1605{
1269 return loop_count; 1606 return loop_count;
1270} 1607}
1271 1608
1609unsigned int
1610ev_depth (EV_P)
1611{
1612 return loop_depth;
1613}
1614
1272void 1615void
1273ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1616ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1274{ 1617{
1275 io_blocktime = interval; 1618 io_blocktime = interval;
1276} 1619}
… …
1279ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1622ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1280{ 1623{
1281 timeout_blocktime = interval; 1624 timeout_blocktime = interval;
1282} 1625}
1283 1626
1627void
1628ev_set_userdata (EV_P_ void *data)
1629{
1630 userdata = data;
1631}
1632
1633void *
1634ev_userdata (EV_P)
1635{
1636 return userdata;
1637}
1638
1639void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1640{
1641 invoke_cb = invoke_pending_cb;
1642}
1643
1644void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1645{
1646 release_cb = release;
1647 acquire_cb = acquire;
1648}
1649#endif
1650
1651/* initialise a loop structure, must be zero-initialised */
1284static void noinline 1652static void noinline
1285loop_init (EV_P_ unsigned int flags) 1653loop_init (EV_P_ unsigned int flags)
1286{ 1654{
1287 if (!backend) 1655 if (!backend)
1288 { 1656 {
1657 origflags = flags;
1658
1659#if EV_USE_REALTIME
1660 if (!have_realtime)
1661 {
1662 struct timespec ts;
1663
1664 if (!clock_gettime (CLOCK_REALTIME, &ts))
1665 have_realtime = 1;
1666 }
1667#endif
1668
1289#if EV_USE_MONOTONIC 1669#if EV_USE_MONOTONIC
1670 if (!have_monotonic)
1290 { 1671 {
1291 struct timespec ts; 1672 struct timespec ts;
1673
1292 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1674 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1293 have_monotonic = 1; 1675 have_monotonic = 1;
1294 } 1676 }
1295#endif 1677#endif
1678
1679 /* pid check not overridable via env */
1680#ifndef _WIN32
1681 if (flags & EVFLAG_FORKCHECK)
1682 curpid = getpid ();
1683#endif
1684
1685 if (!(flags & EVFLAG_NOENV)
1686 && !enable_secure ()
1687 && getenv ("LIBEV_FLAGS"))
1688 flags = atoi (getenv ("LIBEV_FLAGS"));
1296 1689
1297 ev_rt_now = ev_time (); 1690 ev_rt_now = ev_time ();
1298 mn_now = get_clock (); 1691 mn_now = get_clock ();
1299 now_floor = mn_now; 1692 now_floor = mn_now;
1300 rtmn_diff = ev_rt_now - mn_now; 1693 rtmn_diff = ev_rt_now - mn_now;
1694#if EV_FEATURE_API
1695 invoke_cb = ev_invoke_pending;
1696#endif
1301 1697
1302 io_blocktime = 0.; 1698 io_blocktime = 0.;
1303 timeout_blocktime = 0.; 1699 timeout_blocktime = 0.;
1304 backend = 0; 1700 backend = 0;
1305 backend_fd = -1; 1701 backend_fd = -1;
1306 gotasync = 0; 1702 sig_pending = 0;
1703#if EV_ASYNC_ENABLE
1704 async_pending = 0;
1705#endif
1307#if EV_USE_INOTIFY 1706#if EV_USE_INOTIFY
1308 fs_fd = -2; 1707 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1309#endif 1708#endif
1310 1709#if EV_USE_SIGNALFD
1311 /* pid check not overridable via env */ 1710 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1312#ifndef _WIN32
1313 if (flags & EVFLAG_FORKCHECK)
1314 curpid = getpid ();
1315#endif 1711#endif
1316 1712
1317 if (!(flags & EVFLAG_NOENV) 1713 if (!(flags & EVBACKEND_MASK))
1318 && !enable_secure ()
1319 && getenv ("LIBEV_FLAGS"))
1320 flags = atoi (getenv ("LIBEV_FLAGS"));
1321
1322 if (!(flags & 0x0000ffffU))
1323 flags |= ev_recommended_backends (); 1714 flags |= ev_recommended_backends ();
1324 1715
1716#if EV_USE_IOCP
1717 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1718#endif
1325#if EV_USE_PORT 1719#if EV_USE_PORT
1326 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1720 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1327#endif 1721#endif
1328#if EV_USE_KQUEUE 1722#if EV_USE_KQUEUE
1329 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1336#endif 1730#endif
1337#if EV_USE_SELECT 1731#if EV_USE_SELECT
1338 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1732 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1339#endif 1733#endif
1340 1734
1735 ev_prepare_init (&pending_w, pendingcb);
1736
1737#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1341 ev_init (&pipeev, pipecb); 1738 ev_init (&pipe_w, pipecb);
1342 ev_set_priority (&pipeev, EV_MAXPRI); 1739 ev_set_priority (&pipe_w, EV_MAXPRI);
1740#endif
1343 } 1741 }
1344} 1742}
1345 1743
1346static void noinline 1744/* free up a loop structure */
1745void
1347loop_destroy (EV_P) 1746ev_loop_destroy (EV_P)
1348{ 1747{
1349 int i; 1748 int i;
1350 1749
1750#if EV_MULTIPLICITY
1751 /* mimic free (0) */
1752 if (!EV_A)
1753 return;
1754#endif
1755
1756#if EV_CLEANUP_ENABLE
1757 /* queue cleanup watchers (and execute them) */
1758 if (expect_false (cleanupcnt))
1759 {
1760 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1761 EV_INVOKE_PENDING;
1762 }
1763#endif
1764
1765#if EV_CHILD_ENABLE
1766 if (ev_is_active (&childev))
1767 {
1768 ev_ref (EV_A); /* child watcher */
1769 ev_signal_stop (EV_A_ &childev);
1770 }
1771#endif
1772
1351 if (ev_is_active (&pipeev)) 1773 if (ev_is_active (&pipe_w))
1352 { 1774 {
1353 ev_ref (EV_A); /* signal watcher */ 1775 /*ev_ref (EV_A);*/
1354 ev_io_stop (EV_A_ &pipeev); 1776 /*ev_io_stop (EV_A_ &pipe_w);*/
1355 1777
1356#if EV_USE_EVENTFD 1778#if EV_USE_EVENTFD
1357 if (evfd >= 0) 1779 if (evfd >= 0)
1358 close (evfd); 1780 close (evfd);
1359#endif 1781#endif
1360 1782
1361 if (evpipe [0] >= 0) 1783 if (evpipe [0] >= 0)
1362 { 1784 {
1363 close (evpipe [0]); 1785 EV_WIN32_CLOSE_FD (evpipe [0]);
1364 close (evpipe [1]); 1786 EV_WIN32_CLOSE_FD (evpipe [1]);
1365 } 1787 }
1366 } 1788 }
1789
1790#if EV_USE_SIGNALFD
1791 if (ev_is_active (&sigfd_w))
1792 close (sigfd);
1793#endif
1367 1794
1368#if EV_USE_INOTIFY 1795#if EV_USE_INOTIFY
1369 if (fs_fd >= 0) 1796 if (fs_fd >= 0)
1370 close (fs_fd); 1797 close (fs_fd);
1371#endif 1798#endif
1372 1799
1373 if (backend_fd >= 0) 1800 if (backend_fd >= 0)
1374 close (backend_fd); 1801 close (backend_fd);
1375 1802
1803#if EV_USE_IOCP
1804 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1805#endif
1376#if EV_USE_PORT 1806#if EV_USE_PORT
1377 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1807 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1378#endif 1808#endif
1379#if EV_USE_KQUEUE 1809#if EV_USE_KQUEUE
1380 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1810 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1395#if EV_IDLE_ENABLE 1825#if EV_IDLE_ENABLE
1396 array_free (idle, [i]); 1826 array_free (idle, [i]);
1397#endif 1827#endif
1398 } 1828 }
1399 1829
1400 ev_free (anfds); anfdmax = 0; 1830 ev_free (anfds); anfds = 0; anfdmax = 0;
1401 1831
1402 /* have to use the microsoft-never-gets-it-right macro */ 1832 /* have to use the microsoft-never-gets-it-right macro */
1833 array_free (rfeed, EMPTY);
1403 array_free (fdchange, EMPTY); 1834 array_free (fdchange, EMPTY);
1404 array_free (timer, EMPTY); 1835 array_free (timer, EMPTY);
1405#if EV_PERIODIC_ENABLE 1836#if EV_PERIODIC_ENABLE
1406 array_free (periodic, EMPTY); 1837 array_free (periodic, EMPTY);
1407#endif 1838#endif
1408#if EV_FORK_ENABLE 1839#if EV_FORK_ENABLE
1409 array_free (fork, EMPTY); 1840 array_free (fork, EMPTY);
1410#endif 1841#endif
1842#if EV_CLEANUP_ENABLE
1843 array_free (cleanup, EMPTY);
1844#endif
1411 array_free (prepare, EMPTY); 1845 array_free (prepare, EMPTY);
1412 array_free (check, EMPTY); 1846 array_free (check, EMPTY);
1413#if EV_ASYNC_ENABLE 1847#if EV_ASYNC_ENABLE
1414 array_free (async, EMPTY); 1848 array_free (async, EMPTY);
1415#endif 1849#endif
1416 1850
1417 backend = 0; 1851 backend = 0;
1852
1853#if EV_MULTIPLICITY
1854 if (ev_is_default_loop (EV_A))
1855#endif
1856 ev_default_loop_ptr = 0;
1857#if EV_MULTIPLICITY
1858 else
1859 ev_free (EV_A);
1860#endif
1418} 1861}
1419 1862
1420#if EV_USE_INOTIFY 1863#if EV_USE_INOTIFY
1421void inline_size infy_fork (EV_P); 1864inline_size void infy_fork (EV_P);
1422#endif 1865#endif
1423 1866
1424void inline_size 1867inline_size void
1425loop_fork (EV_P) 1868loop_fork (EV_P)
1426{ 1869{
1427#if EV_USE_PORT 1870#if EV_USE_PORT
1428 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1871 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1429#endif 1872#endif
… …
1435#endif 1878#endif
1436#if EV_USE_INOTIFY 1879#if EV_USE_INOTIFY
1437 infy_fork (EV_A); 1880 infy_fork (EV_A);
1438#endif 1881#endif
1439 1882
1440 if (ev_is_active (&pipeev)) 1883 if (ev_is_active (&pipe_w))
1441 { 1884 {
1442 /* this "locks" the handlers against writing to the pipe */ 1885 /* this "locks" the handlers against writing to the pipe */
1443 /* while we modify the fd vars */ 1886 /* while we modify the fd vars */
1444 gotsig = 1; 1887 sig_pending = 1;
1445#if EV_ASYNC_ENABLE 1888#if EV_ASYNC_ENABLE
1446 gotasync = 1; 1889 async_pending = 1;
1447#endif 1890#endif
1448 1891
1449 ev_ref (EV_A); 1892 ev_ref (EV_A);
1450 ev_io_stop (EV_A_ &pipeev); 1893 ev_io_stop (EV_A_ &pipe_w);
1451 1894
1452#if EV_USE_EVENTFD 1895#if EV_USE_EVENTFD
1453 if (evfd >= 0) 1896 if (evfd >= 0)
1454 close (evfd); 1897 close (evfd);
1455#endif 1898#endif
1456 1899
1457 if (evpipe [0] >= 0) 1900 if (evpipe [0] >= 0)
1458 { 1901 {
1459 close (evpipe [0]); 1902 EV_WIN32_CLOSE_FD (evpipe [0]);
1460 close (evpipe [1]); 1903 EV_WIN32_CLOSE_FD (evpipe [1]);
1461 } 1904 }
1462 1905
1906#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1463 evpipe_init (EV_A); 1907 evpipe_init (EV_A);
1464 /* now iterate over everything, in case we missed something */ 1908 /* now iterate over everything, in case we missed something */
1465 pipecb (EV_A_ &pipeev, EV_READ); 1909 pipecb (EV_A_ &pipe_w, EV_READ);
1910#endif
1466 } 1911 }
1467 1912
1468 postfork = 0; 1913 postfork = 0;
1469} 1914}
1470 1915
1471#if EV_MULTIPLICITY 1916#if EV_MULTIPLICITY
1472 1917
1473struct ev_loop * 1918struct ev_loop *
1474ev_loop_new (unsigned int flags) 1919ev_loop_new (unsigned int flags)
1475{ 1920{
1476 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1921 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1477 1922
1478 memset (loop, 0, sizeof (struct ev_loop)); 1923 memset (EV_A, 0, sizeof (struct ev_loop));
1479
1480 loop_init (EV_A_ flags); 1924 loop_init (EV_A_ flags);
1481 1925
1482 if (ev_backend (EV_A)) 1926 if (ev_backend (EV_A))
1483 return loop; 1927 return EV_A;
1484 1928
1929 ev_free (EV_A);
1485 return 0; 1930 return 0;
1486} 1931}
1487 1932
1488void 1933#endif /* multiplicity */
1489ev_loop_destroy (EV_P)
1490{
1491 loop_destroy (EV_A);
1492 ev_free (loop);
1493}
1494
1495void
1496ev_loop_fork (EV_P)
1497{
1498 postfork = 1; /* must be in line with ev_default_fork */
1499}
1500 1934
1501#if EV_VERIFY 1935#if EV_VERIFY
1502static void noinline 1936static void noinline
1503verify_watcher (EV_P_ W w) 1937verify_watcher (EV_P_ W w)
1504{ 1938{
1505 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1939 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1506 1940
1507 if (w->pending) 1941 if (w->pending)
1508 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1942 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1509} 1943}
1510 1944
1511static void noinline 1945static void noinline
1512verify_heap (EV_P_ ANHE *heap, int N) 1946verify_heap (EV_P_ ANHE *heap, int N)
1513{ 1947{
1514 int i; 1948 int i;
1515 1949
1516 for (i = HEAP0; i < N + HEAP0; ++i) 1950 for (i = HEAP0; i < N + HEAP0; ++i)
1517 { 1951 {
1518 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1952 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1519 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1953 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1520 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1954 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1521 1955
1522 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1956 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1523 } 1957 }
1524} 1958}
1525 1959
1526static void noinline 1960static void noinline
1527array_verify (EV_P_ W *ws, int cnt) 1961array_verify (EV_P_ W *ws, int cnt)
1528{ 1962{
1529 while (cnt--) 1963 while (cnt--)
1530 { 1964 {
1531 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1965 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1532 verify_watcher (EV_A_ ws [cnt]); 1966 verify_watcher (EV_A_ ws [cnt]);
1533 } 1967 }
1534} 1968}
1535#endif 1969#endif
1536 1970
1971#if EV_FEATURE_API
1537void 1972void
1538ev_loop_verify (EV_P) 1973ev_verify (EV_P)
1539{ 1974{
1540#if EV_VERIFY 1975#if EV_VERIFY
1541 int i; 1976 int i;
1542 WL w; 1977 WL w;
1543 1978
1544 assert (activecnt >= -1); 1979 assert (activecnt >= -1);
1545 1980
1546 assert (fdchangemax >= fdchangecnt); 1981 assert (fdchangemax >= fdchangecnt);
1547 for (i = 0; i < fdchangecnt; ++i) 1982 for (i = 0; i < fdchangecnt; ++i)
1548 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1983 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1549 1984
1550 assert (anfdmax >= 0); 1985 assert (anfdmax >= 0);
1551 for (i = 0; i < anfdmax; ++i) 1986 for (i = 0; i < anfdmax; ++i)
1552 for (w = anfds [i].head; w; w = w->next) 1987 for (w = anfds [i].head; w; w = w->next)
1553 { 1988 {
1554 verify_watcher (EV_A_ (W)w); 1989 verify_watcher (EV_A_ (W)w);
1555 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1990 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1556 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1991 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1557 } 1992 }
1558 1993
1559 assert (timermax >= timercnt); 1994 assert (timermax >= timercnt);
1560 verify_heap (EV_A_ timers, timercnt); 1995 verify_heap (EV_A_ timers, timercnt);
1561 1996
… …
1577#if EV_FORK_ENABLE 2012#if EV_FORK_ENABLE
1578 assert (forkmax >= forkcnt); 2013 assert (forkmax >= forkcnt);
1579 array_verify (EV_A_ (W *)forks, forkcnt); 2014 array_verify (EV_A_ (W *)forks, forkcnt);
1580#endif 2015#endif
1581 2016
2017#if EV_CLEANUP_ENABLE
2018 assert (cleanupmax >= cleanupcnt);
2019 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2020#endif
2021
1582#if EV_ASYNC_ENABLE 2022#if EV_ASYNC_ENABLE
1583 assert (asyncmax >= asynccnt); 2023 assert (asyncmax >= asynccnt);
1584 array_verify (EV_A_ (W *)asyncs, asynccnt); 2024 array_verify (EV_A_ (W *)asyncs, asynccnt);
1585#endif 2025#endif
1586 2026
2027#if EV_PREPARE_ENABLE
1587 assert (preparemax >= preparecnt); 2028 assert (preparemax >= preparecnt);
1588 array_verify (EV_A_ (W *)prepares, preparecnt); 2029 array_verify (EV_A_ (W *)prepares, preparecnt);
2030#endif
1589 2031
2032#if EV_CHECK_ENABLE
1590 assert (checkmax >= checkcnt); 2033 assert (checkmax >= checkcnt);
1591 array_verify (EV_A_ (W *)checks, checkcnt); 2034 array_verify (EV_A_ (W *)checks, checkcnt);
2035#endif
1592 2036
1593# if 0 2037# if 0
2038#if EV_CHILD_ENABLE
1594 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2039 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1595 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2040 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2041#endif
1596# endif 2042# endif
1597#endif 2043#endif
1598} 2044}
1599 2045#endif
1600#endif /* multiplicity */
1601 2046
1602#if EV_MULTIPLICITY 2047#if EV_MULTIPLICITY
1603struct ev_loop * 2048struct ev_loop *
1604ev_default_loop_init (unsigned int flags)
1605#else 2049#else
1606int 2050int
2051#endif
1607ev_default_loop (unsigned int flags) 2052ev_default_loop (unsigned int flags)
1608#endif
1609{ 2053{
1610 if (!ev_default_loop_ptr) 2054 if (!ev_default_loop_ptr)
1611 { 2055 {
1612#if EV_MULTIPLICITY 2056#if EV_MULTIPLICITY
1613 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2057 EV_P = ev_default_loop_ptr = &default_loop_struct;
1614#else 2058#else
1615 ev_default_loop_ptr = 1; 2059 ev_default_loop_ptr = 1;
1616#endif 2060#endif
1617 2061
1618 loop_init (EV_A_ flags); 2062 loop_init (EV_A_ flags);
1619 2063
1620 if (ev_backend (EV_A)) 2064 if (ev_backend (EV_A))
1621 { 2065 {
1622#ifndef _WIN32 2066#if EV_CHILD_ENABLE
1623 ev_signal_init (&childev, childcb, SIGCHLD); 2067 ev_signal_init (&childev, childcb, SIGCHLD);
1624 ev_set_priority (&childev, EV_MAXPRI); 2068 ev_set_priority (&childev, EV_MAXPRI);
1625 ev_signal_start (EV_A_ &childev); 2069 ev_signal_start (EV_A_ &childev);
1626 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2070 ev_unref (EV_A); /* child watcher should not keep loop alive */
1627#endif 2071#endif
… …
1632 2076
1633 return ev_default_loop_ptr; 2077 return ev_default_loop_ptr;
1634} 2078}
1635 2079
1636void 2080void
1637ev_default_destroy (void) 2081ev_loop_fork (EV_P)
1638{ 2082{
1639#if EV_MULTIPLICITY
1640 struct ev_loop *loop = ev_default_loop_ptr;
1641#endif
1642
1643 ev_default_loop_ptr = 0;
1644
1645#ifndef _WIN32
1646 ev_ref (EV_A); /* child watcher */
1647 ev_signal_stop (EV_A_ &childev);
1648#endif
1649
1650 loop_destroy (EV_A);
1651}
1652
1653void
1654ev_default_fork (void)
1655{
1656#if EV_MULTIPLICITY
1657 struct ev_loop *loop = ev_default_loop_ptr;
1658#endif
1659
1660 if (backend)
1661 postfork = 1; /* must be in line with ev_loop_fork */ 2083 postfork = 1; /* must be in line with ev_default_fork */
1662} 2084}
1663 2085
1664/*****************************************************************************/ 2086/*****************************************************************************/
1665 2087
1666void 2088void
1667ev_invoke (EV_P_ void *w, int revents) 2089ev_invoke (EV_P_ void *w, int revents)
1668{ 2090{
1669 EV_CB_INVOKE ((W)w, revents); 2091 EV_CB_INVOKE ((W)w, revents);
1670} 2092}
1671 2093
1672void inline_speed 2094unsigned int
1673call_pending (EV_P) 2095ev_pending_count (EV_P)
2096{
2097 int pri;
2098 unsigned int count = 0;
2099
2100 for (pri = NUMPRI; pri--; )
2101 count += pendingcnt [pri];
2102
2103 return count;
2104}
2105
2106void noinline
2107ev_invoke_pending (EV_P)
1674{ 2108{
1675 int pri; 2109 int pri;
1676 2110
1677 for (pri = NUMPRI; pri--; ) 2111 for (pri = NUMPRI; pri--; )
1678 while (pendingcnt [pri]) 2112 while (pendingcnt [pri])
1679 { 2113 {
1680 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2114 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1681 2115
1682 if (expect_true (p->w))
1683 {
1684 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2116 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2117 /* ^ this is no longer true, as pending_w could be here */
1685 2118
1686 p->w->pending = 0; 2119 p->w->pending = 0;
1687 EV_CB_INVOKE (p->w, p->events); 2120 EV_CB_INVOKE (p->w, p->events);
1688 EV_FREQUENT_CHECK; 2121 EV_FREQUENT_CHECK;
1689 }
1690 } 2122 }
1691} 2123}
1692 2124
1693#if EV_IDLE_ENABLE 2125#if EV_IDLE_ENABLE
1694void inline_size 2126/* make idle watchers pending. this handles the "call-idle */
2127/* only when higher priorities are idle" logic */
2128inline_size void
1695idle_reify (EV_P) 2129idle_reify (EV_P)
1696{ 2130{
1697 if (expect_false (idleall)) 2131 if (expect_false (idleall))
1698 { 2132 {
1699 int pri; 2133 int pri;
… …
1711 } 2145 }
1712 } 2146 }
1713} 2147}
1714#endif 2148#endif
1715 2149
1716void inline_size 2150/* make timers pending */
2151inline_size void
1717timers_reify (EV_P) 2152timers_reify (EV_P)
1718{ 2153{
1719 EV_FREQUENT_CHECK; 2154 EV_FREQUENT_CHECK;
1720 2155
1721 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2156 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1722 { 2157 {
1723 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2158 do
1724
1725 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1726
1727 /* first reschedule or stop timer */
1728 if (w->repeat)
1729 { 2159 {
2160 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2161
2162 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2163
2164 /* first reschedule or stop timer */
2165 if (w->repeat)
2166 {
1730 ev_at (w) += w->repeat; 2167 ev_at (w) += w->repeat;
1731 if (ev_at (w) < mn_now) 2168 if (ev_at (w) < mn_now)
1732 ev_at (w) = mn_now; 2169 ev_at (w) = mn_now;
1733 2170
1734 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2171 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1735 2172
1736 ANHE_at_cache (timers [HEAP0]); 2173 ANHE_at_cache (timers [HEAP0]);
1737 downheap (timers, timercnt, HEAP0); 2174 downheap (timers, timercnt, HEAP0);
2175 }
2176 else
2177 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2178
2179 EV_FREQUENT_CHECK;
2180 feed_reverse (EV_A_ (W)w);
1738 } 2181 }
1739 else 2182 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1740 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1741 2183
1742 EV_FREQUENT_CHECK; 2184 feed_reverse_done (EV_A_ EV_TIMER);
1743 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1744 } 2185 }
1745} 2186}
1746 2187
1747#if EV_PERIODIC_ENABLE 2188#if EV_PERIODIC_ENABLE
1748void inline_size 2189/* make periodics pending */
2190inline_size void
1749periodics_reify (EV_P) 2191periodics_reify (EV_P)
1750{ 2192{
1751 EV_FREQUENT_CHECK; 2193 EV_FREQUENT_CHECK;
1752 2194
1753 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2195 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1754 { 2196 {
1755 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2197 int feed_count = 0;
1756 2198
1757 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2199 do
1758
1759 /* first reschedule or stop timer */
1760 if (w->reschedule_cb)
1761 { 2200 {
2201 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2202
2203 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2204
2205 /* first reschedule or stop timer */
2206 if (w->reschedule_cb)
2207 {
1762 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2208 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1763 2209
1764 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2210 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1765 2211
1766 ANHE_at_cache (periodics [HEAP0]); 2212 ANHE_at_cache (periodics [HEAP0]);
1767 downheap (periodics, periodiccnt, HEAP0); 2213 downheap (periodics, periodiccnt, HEAP0);
2214 }
2215 else if (w->interval)
2216 {
2217 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2218 /* if next trigger time is not sufficiently in the future, put it there */
2219 /* this might happen because of floating point inexactness */
2220 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2221 {
2222 ev_at (w) += w->interval;
2223
2224 /* if interval is unreasonably low we might still have a time in the past */
2225 /* so correct this. this will make the periodic very inexact, but the user */
2226 /* has effectively asked to get triggered more often than possible */
2227 if (ev_at (w) < ev_rt_now)
2228 ev_at (w) = ev_rt_now;
2229 }
2230
2231 ANHE_at_cache (periodics [HEAP0]);
2232 downheap (periodics, periodiccnt, HEAP0);
2233 }
2234 else
2235 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2236
2237 EV_FREQUENT_CHECK;
2238 feed_reverse (EV_A_ (W)w);
1768 } 2239 }
1769 else if (w->interval) 2240 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1770 {
1771 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1772 /* if next trigger time is not sufficiently in the future, put it there */
1773 /* this might happen because of floating point inexactness */
1774 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1775 {
1776 ev_at (w) += w->interval;
1777 2241
1778 /* if interval is unreasonably low we might still have a time in the past */
1779 /* so correct this. this will make the periodic very inexact, but the user */
1780 /* has effectively asked to get triggered more often than possible */
1781 if (ev_at (w) < ev_rt_now)
1782 ev_at (w) = ev_rt_now;
1783 }
1784
1785 ANHE_at_cache (periodics [HEAP0]);
1786 downheap (periodics, periodiccnt, HEAP0);
1787 }
1788 else
1789 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1790
1791 EV_FREQUENT_CHECK;
1792 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2242 feed_reverse_done (EV_A_ EV_PERIODIC);
1793 } 2243 }
1794} 2244}
1795 2245
2246/* simply recalculate all periodics */
2247/* TODO: maybe ensure that at least one event happens when jumping forward? */
1796static void noinline 2248static void noinline
1797periodics_reschedule (EV_P) 2249periodics_reschedule (EV_P)
1798{ 2250{
1799 int i; 2251 int i;
1800 2252
… …
1813 2265
1814 reheap (periodics, periodiccnt); 2266 reheap (periodics, periodiccnt);
1815} 2267}
1816#endif 2268#endif
1817 2269
1818void inline_speed 2270/* adjust all timers by a given offset */
2271static void noinline
2272timers_reschedule (EV_P_ ev_tstamp adjust)
2273{
2274 int i;
2275
2276 for (i = 0; i < timercnt; ++i)
2277 {
2278 ANHE *he = timers + i + HEAP0;
2279 ANHE_w (*he)->at += adjust;
2280 ANHE_at_cache (*he);
2281 }
2282}
2283
2284/* fetch new monotonic and realtime times from the kernel */
2285/* also detect if there was a timejump, and act accordingly */
2286inline_speed void
1819time_update (EV_P_ ev_tstamp max_block) 2287time_update (EV_P_ ev_tstamp max_block)
1820{ 2288{
1821 int i;
1822
1823#if EV_USE_MONOTONIC 2289#if EV_USE_MONOTONIC
1824 if (expect_true (have_monotonic)) 2290 if (expect_true (have_monotonic))
1825 { 2291 {
2292 int i;
1826 ev_tstamp odiff = rtmn_diff; 2293 ev_tstamp odiff = rtmn_diff;
1827 2294
1828 mn_now = get_clock (); 2295 mn_now = get_clock ();
1829 2296
1830 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2297 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1856 ev_rt_now = ev_time (); 2323 ev_rt_now = ev_time ();
1857 mn_now = get_clock (); 2324 mn_now = get_clock ();
1858 now_floor = mn_now; 2325 now_floor = mn_now;
1859 } 2326 }
1860 2327
2328 /* no timer adjustment, as the monotonic clock doesn't jump */
2329 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1861# if EV_PERIODIC_ENABLE 2330# if EV_PERIODIC_ENABLE
1862 periodics_reschedule (EV_A); 2331 periodics_reschedule (EV_A);
1863# endif 2332# endif
1864 /* no timer adjustment, as the monotonic clock doesn't jump */
1865 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1866 } 2333 }
1867 else 2334 else
1868#endif 2335#endif
1869 { 2336 {
1870 ev_rt_now = ev_time (); 2337 ev_rt_now = ev_time ();
1871 2338
1872 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2339 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1873 { 2340 {
2341 /* adjust timers. this is easy, as the offset is the same for all of them */
2342 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1874#if EV_PERIODIC_ENABLE 2343#if EV_PERIODIC_ENABLE
1875 periodics_reschedule (EV_A); 2344 periodics_reschedule (EV_A);
1876#endif 2345#endif
1877 /* adjust timers. this is easy, as the offset is the same for all of them */
1878 for (i = 0; i < timercnt; ++i)
1879 {
1880 ANHE *he = timers + i + HEAP0;
1881 ANHE_w (*he)->at += ev_rt_now - mn_now;
1882 ANHE_at_cache (*he);
1883 }
1884 } 2346 }
1885 2347
1886 mn_now = ev_rt_now; 2348 mn_now = ev_rt_now;
1887 } 2349 }
1888} 2350}
1889 2351
1890void 2352void
1891ev_ref (EV_P)
1892{
1893 ++activecnt;
1894}
1895
1896void
1897ev_unref (EV_P)
1898{
1899 --activecnt;
1900}
1901
1902void
1903ev_now_update (EV_P)
1904{
1905 time_update (EV_A_ 1e100);
1906}
1907
1908static int loop_done;
1909
1910void
1911ev_loop (EV_P_ int flags) 2353ev_run (EV_P_ int flags)
1912{ 2354{
2355#if EV_FEATURE_API
2356 ++loop_depth;
2357#endif
2358
2359 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2360
1913 loop_done = EVUNLOOP_CANCEL; 2361 loop_done = EVBREAK_CANCEL;
1914 2362
1915 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2363 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1916 2364
1917 do 2365 do
1918 { 2366 {
1919#if EV_VERIFY >= 2 2367#if EV_VERIFY >= 2
1920 ev_loop_verify (EV_A); 2368 ev_verify (EV_A);
1921#endif 2369#endif
1922 2370
1923#ifndef _WIN32 2371#ifndef _WIN32
1924 if (expect_false (curpid)) /* penalise the forking check even more */ 2372 if (expect_false (curpid)) /* penalise the forking check even more */
1925 if (expect_false (getpid () != curpid)) 2373 if (expect_false (getpid () != curpid))
… …
1933 /* we might have forked, so queue fork handlers */ 2381 /* we might have forked, so queue fork handlers */
1934 if (expect_false (postfork)) 2382 if (expect_false (postfork))
1935 if (forkcnt) 2383 if (forkcnt)
1936 { 2384 {
1937 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2385 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1938 call_pending (EV_A); 2386 EV_INVOKE_PENDING;
1939 } 2387 }
1940#endif 2388#endif
1941 2389
2390#if EV_PREPARE_ENABLE
1942 /* queue prepare watchers (and execute them) */ 2391 /* queue prepare watchers (and execute them) */
1943 if (expect_false (preparecnt)) 2392 if (expect_false (preparecnt))
1944 { 2393 {
1945 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2394 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1946 call_pending (EV_A); 2395 EV_INVOKE_PENDING;
1947 } 2396 }
2397#endif
1948 2398
1949 if (expect_false (!activecnt)) 2399 if (expect_false (loop_done))
1950 break; 2400 break;
1951 2401
1952 /* we might have forked, so reify kernel state if necessary */ 2402 /* we might have forked, so reify kernel state if necessary */
1953 if (expect_false (postfork)) 2403 if (expect_false (postfork))
1954 loop_fork (EV_A); 2404 loop_fork (EV_A);
… …
1959 /* calculate blocking time */ 2409 /* calculate blocking time */
1960 { 2410 {
1961 ev_tstamp waittime = 0.; 2411 ev_tstamp waittime = 0.;
1962 ev_tstamp sleeptime = 0.; 2412 ev_tstamp sleeptime = 0.;
1963 2413
2414 /* remember old timestamp for io_blocktime calculation */
2415 ev_tstamp prev_mn_now = mn_now;
2416
2417 /* update time to cancel out callback processing overhead */
2418 time_update (EV_A_ 1e100);
2419
1964 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2420 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1965 { 2421 {
1966 /* update time to cancel out callback processing overhead */
1967 time_update (EV_A_ 1e100);
1968
1969 waittime = MAX_BLOCKTIME; 2422 waittime = MAX_BLOCKTIME;
1970 2423
1971 if (timercnt) 2424 if (timercnt)
1972 { 2425 {
1973 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2426 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1980 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2433 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1981 if (waittime > to) waittime = to; 2434 if (waittime > to) waittime = to;
1982 } 2435 }
1983#endif 2436#endif
1984 2437
2438 /* don't let timeouts decrease the waittime below timeout_blocktime */
1985 if (expect_false (waittime < timeout_blocktime)) 2439 if (expect_false (waittime < timeout_blocktime))
1986 waittime = timeout_blocktime; 2440 waittime = timeout_blocktime;
1987 2441
1988 sleeptime = waittime - backend_fudge; 2442 /* extra check because io_blocktime is commonly 0 */
1989
1990 if (expect_true (sleeptime > io_blocktime)) 2443 if (expect_false (io_blocktime))
1991 sleeptime = io_blocktime;
1992
1993 if (sleeptime)
1994 { 2444 {
2445 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2446
2447 if (sleeptime > waittime - backend_fudge)
2448 sleeptime = waittime - backend_fudge;
2449
2450 if (expect_true (sleeptime > 0.))
2451 {
1995 ev_sleep (sleeptime); 2452 ev_sleep (sleeptime);
1996 waittime -= sleeptime; 2453 waittime -= sleeptime;
2454 }
1997 } 2455 }
1998 } 2456 }
1999 2457
2458#if EV_FEATURE_API
2000 ++loop_count; 2459 ++loop_count;
2460#endif
2461 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2001 backend_poll (EV_A_ waittime); 2462 backend_poll (EV_A_ waittime);
2463 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2002 2464
2003 /* update ev_rt_now, do magic */ 2465 /* update ev_rt_now, do magic */
2004 time_update (EV_A_ waittime + sleeptime); 2466 time_update (EV_A_ waittime + sleeptime);
2005 } 2467 }
2006 2468
… …
2013#if EV_IDLE_ENABLE 2475#if EV_IDLE_ENABLE
2014 /* queue idle watchers unless other events are pending */ 2476 /* queue idle watchers unless other events are pending */
2015 idle_reify (EV_A); 2477 idle_reify (EV_A);
2016#endif 2478#endif
2017 2479
2480#if EV_CHECK_ENABLE
2018 /* queue check watchers, to be executed first */ 2481 /* queue check watchers, to be executed first */
2019 if (expect_false (checkcnt)) 2482 if (expect_false (checkcnt))
2020 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2483 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2484#endif
2021 2485
2022 call_pending (EV_A); 2486 EV_INVOKE_PENDING;
2023 } 2487 }
2024 while (expect_true ( 2488 while (expect_true (
2025 activecnt 2489 activecnt
2026 && !loop_done 2490 && !loop_done
2027 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2491 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2028 )); 2492 ));
2029 2493
2030 if (loop_done == EVUNLOOP_ONE) 2494 if (loop_done == EVBREAK_ONE)
2031 loop_done = EVUNLOOP_CANCEL; 2495 loop_done = EVBREAK_CANCEL;
2032}
2033 2496
2497#if EV_FEATURE_API
2498 --loop_depth;
2499#endif
2500}
2501
2034void 2502void
2035ev_unloop (EV_P_ int how) 2503ev_break (EV_P_ int how)
2036{ 2504{
2037 loop_done = how; 2505 loop_done = how;
2038} 2506}
2039 2507
2508void
2509ev_ref (EV_P)
2510{
2511 ++activecnt;
2512}
2513
2514void
2515ev_unref (EV_P)
2516{
2517 --activecnt;
2518}
2519
2520void
2521ev_now_update (EV_P)
2522{
2523 time_update (EV_A_ 1e100);
2524}
2525
2526void
2527ev_suspend (EV_P)
2528{
2529 ev_now_update (EV_A);
2530}
2531
2532void
2533ev_resume (EV_P)
2534{
2535 ev_tstamp mn_prev = mn_now;
2536
2537 ev_now_update (EV_A);
2538 timers_reschedule (EV_A_ mn_now - mn_prev);
2539#if EV_PERIODIC_ENABLE
2540 /* TODO: really do this? */
2541 periodics_reschedule (EV_A);
2542#endif
2543}
2544
2040/*****************************************************************************/ 2545/*****************************************************************************/
2546/* singly-linked list management, used when the expected list length is short */
2041 2547
2042void inline_size 2548inline_size void
2043wlist_add (WL *head, WL elem) 2549wlist_add (WL *head, WL elem)
2044{ 2550{
2045 elem->next = *head; 2551 elem->next = *head;
2046 *head = elem; 2552 *head = elem;
2047} 2553}
2048 2554
2049void inline_size 2555inline_size void
2050wlist_del (WL *head, WL elem) 2556wlist_del (WL *head, WL elem)
2051{ 2557{
2052 while (*head) 2558 while (*head)
2053 { 2559 {
2054 if (*head == elem) 2560 if (expect_true (*head == elem))
2055 { 2561 {
2056 *head = elem->next; 2562 *head = elem->next;
2057 return; 2563 break;
2058 } 2564 }
2059 2565
2060 head = &(*head)->next; 2566 head = &(*head)->next;
2061 } 2567 }
2062} 2568}
2063 2569
2064void inline_speed 2570/* internal, faster, version of ev_clear_pending */
2571inline_speed void
2065clear_pending (EV_P_ W w) 2572clear_pending (EV_P_ W w)
2066{ 2573{
2067 if (w->pending) 2574 if (w->pending)
2068 { 2575 {
2069 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2576 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2070 w->pending = 0; 2577 w->pending = 0;
2071 } 2578 }
2072} 2579}
2073 2580
2074int 2581int
… …
2078 int pending = w_->pending; 2585 int pending = w_->pending;
2079 2586
2080 if (expect_true (pending)) 2587 if (expect_true (pending))
2081 { 2588 {
2082 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2589 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2590 p->w = (W)&pending_w;
2083 w_->pending = 0; 2591 w_->pending = 0;
2084 p->w = 0;
2085 return p->events; 2592 return p->events;
2086 } 2593 }
2087 else 2594 else
2088 return 0; 2595 return 0;
2089} 2596}
2090 2597
2091void inline_size 2598inline_size void
2092pri_adjust (EV_P_ W w) 2599pri_adjust (EV_P_ W w)
2093{ 2600{
2094 int pri = w->priority; 2601 int pri = ev_priority (w);
2095 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2602 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2096 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2603 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2097 w->priority = pri; 2604 ev_set_priority (w, pri);
2098} 2605}
2099 2606
2100void inline_speed 2607inline_speed void
2101ev_start (EV_P_ W w, int active) 2608ev_start (EV_P_ W w, int active)
2102{ 2609{
2103 pri_adjust (EV_A_ w); 2610 pri_adjust (EV_A_ w);
2104 w->active = active; 2611 w->active = active;
2105 ev_ref (EV_A); 2612 ev_ref (EV_A);
2106} 2613}
2107 2614
2108void inline_size 2615inline_size void
2109ev_stop (EV_P_ W w) 2616ev_stop (EV_P_ W w)
2110{ 2617{
2111 ev_unref (EV_A); 2618 ev_unref (EV_A);
2112 w->active = 0; 2619 w->active = 0;
2113} 2620}
… …
2120 int fd = w->fd; 2627 int fd = w->fd;
2121 2628
2122 if (expect_false (ev_is_active (w))) 2629 if (expect_false (ev_is_active (w)))
2123 return; 2630 return;
2124 2631
2125 assert (("ev_io_start called with negative fd", fd >= 0)); 2632 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2126 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2633 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2127 2634
2128 EV_FREQUENT_CHECK; 2635 EV_FREQUENT_CHECK;
2129 2636
2130 ev_start (EV_A_ (W)w, 1); 2637 ev_start (EV_A_ (W)w, 1);
2131 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2638 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2132 wlist_add (&anfds[fd].head, (WL)w); 2639 wlist_add (&anfds[fd].head, (WL)w);
2133 2640
2134 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2641 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2135 w->events &= ~EV_IOFDSET; 2642 w->events &= ~EV__IOFDSET;
2136 2643
2137 EV_FREQUENT_CHECK; 2644 EV_FREQUENT_CHECK;
2138} 2645}
2139 2646
2140void noinline 2647void noinline
… …
2142{ 2649{
2143 clear_pending (EV_A_ (W)w); 2650 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w))) 2651 if (expect_false (!ev_is_active (w)))
2145 return; 2652 return;
2146 2653
2147 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2654 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2148 2655
2149 EV_FREQUENT_CHECK; 2656 EV_FREQUENT_CHECK;
2150 2657
2151 wlist_del (&anfds[w->fd].head, (WL)w); 2658 wlist_del (&anfds[w->fd].head, (WL)w);
2152 ev_stop (EV_A_ (W)w); 2659 ev_stop (EV_A_ (W)w);
2153 2660
2154 fd_change (EV_A_ w->fd, 1); 2661 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2155 2662
2156 EV_FREQUENT_CHECK; 2663 EV_FREQUENT_CHECK;
2157} 2664}
2158 2665
2159void noinline 2666void noinline
… …
2162 if (expect_false (ev_is_active (w))) 2669 if (expect_false (ev_is_active (w)))
2163 return; 2670 return;
2164 2671
2165 ev_at (w) += mn_now; 2672 ev_at (w) += mn_now;
2166 2673
2167 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2674 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2168 2675
2169 EV_FREQUENT_CHECK; 2676 EV_FREQUENT_CHECK;
2170 2677
2171 ++timercnt; 2678 ++timercnt;
2172 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2679 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2175 ANHE_at_cache (timers [ev_active (w)]); 2682 ANHE_at_cache (timers [ev_active (w)]);
2176 upheap (timers, ev_active (w)); 2683 upheap (timers, ev_active (w));
2177 2684
2178 EV_FREQUENT_CHECK; 2685 EV_FREQUENT_CHECK;
2179 2686
2180 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2687 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2181} 2688}
2182 2689
2183void noinline 2690void noinline
2184ev_timer_stop (EV_P_ ev_timer *w) 2691ev_timer_stop (EV_P_ ev_timer *w)
2185{ 2692{
… …
2190 EV_FREQUENT_CHECK; 2697 EV_FREQUENT_CHECK;
2191 2698
2192 { 2699 {
2193 int active = ev_active (w); 2700 int active = ev_active (w);
2194 2701
2195 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2702 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2196 2703
2197 --timercnt; 2704 --timercnt;
2198 2705
2199 if (expect_true (active < timercnt + HEAP0)) 2706 if (expect_true (active < timercnt + HEAP0))
2200 { 2707 {
2201 timers [active] = timers [timercnt + HEAP0]; 2708 timers [active] = timers [timercnt + HEAP0];
2202 adjustheap (timers, timercnt, active); 2709 adjustheap (timers, timercnt, active);
2203 } 2710 }
2204 } 2711 }
2205 2712
2206 EV_FREQUENT_CHECK;
2207
2208 ev_at (w) -= mn_now; 2713 ev_at (w) -= mn_now;
2209 2714
2210 ev_stop (EV_A_ (W)w); 2715 ev_stop (EV_A_ (W)w);
2716
2717 EV_FREQUENT_CHECK;
2211} 2718}
2212 2719
2213void noinline 2720void noinline
2214ev_timer_again (EV_P_ ev_timer *w) 2721ev_timer_again (EV_P_ ev_timer *w)
2215{ 2722{
… …
2233 } 2740 }
2234 2741
2235 EV_FREQUENT_CHECK; 2742 EV_FREQUENT_CHECK;
2236} 2743}
2237 2744
2745ev_tstamp
2746ev_timer_remaining (EV_P_ ev_timer *w)
2747{
2748 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2749}
2750
2238#if EV_PERIODIC_ENABLE 2751#if EV_PERIODIC_ENABLE
2239void noinline 2752void noinline
2240ev_periodic_start (EV_P_ ev_periodic *w) 2753ev_periodic_start (EV_P_ ev_periodic *w)
2241{ 2754{
2242 if (expect_false (ev_is_active (w))) 2755 if (expect_false (ev_is_active (w)))
… …
2244 2757
2245 if (w->reschedule_cb) 2758 if (w->reschedule_cb)
2246 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2759 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2247 else if (w->interval) 2760 else if (w->interval)
2248 { 2761 {
2249 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2762 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2250 /* this formula differs from the one in periodic_reify because we do not always round up */ 2763 /* this formula differs from the one in periodic_reify because we do not always round up */
2251 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2764 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2252 } 2765 }
2253 else 2766 else
2254 ev_at (w) = w->offset; 2767 ev_at (w) = w->offset;
… …
2262 ANHE_at_cache (periodics [ev_active (w)]); 2775 ANHE_at_cache (periodics [ev_active (w)]);
2263 upheap (periodics, ev_active (w)); 2776 upheap (periodics, ev_active (w));
2264 2777
2265 EV_FREQUENT_CHECK; 2778 EV_FREQUENT_CHECK;
2266 2779
2267 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2780 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2268} 2781}
2269 2782
2270void noinline 2783void noinline
2271ev_periodic_stop (EV_P_ ev_periodic *w) 2784ev_periodic_stop (EV_P_ ev_periodic *w)
2272{ 2785{
… …
2277 EV_FREQUENT_CHECK; 2790 EV_FREQUENT_CHECK;
2278 2791
2279 { 2792 {
2280 int active = ev_active (w); 2793 int active = ev_active (w);
2281 2794
2282 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2795 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2283 2796
2284 --periodiccnt; 2797 --periodiccnt;
2285 2798
2286 if (expect_true (active < periodiccnt + HEAP0)) 2799 if (expect_true (active < periodiccnt + HEAP0))
2287 { 2800 {
2288 periodics [active] = periodics [periodiccnt + HEAP0]; 2801 periodics [active] = periodics [periodiccnt + HEAP0];
2289 adjustheap (periodics, periodiccnt, active); 2802 adjustheap (periodics, periodiccnt, active);
2290 } 2803 }
2291 } 2804 }
2292 2805
2293 EV_FREQUENT_CHECK;
2294
2295 ev_stop (EV_A_ (W)w); 2806 ev_stop (EV_A_ (W)w);
2807
2808 EV_FREQUENT_CHECK;
2296} 2809}
2297 2810
2298void noinline 2811void noinline
2299ev_periodic_again (EV_P_ ev_periodic *w) 2812ev_periodic_again (EV_P_ ev_periodic *w)
2300{ 2813{
… …
2306 2819
2307#ifndef SA_RESTART 2820#ifndef SA_RESTART
2308# define SA_RESTART 0 2821# define SA_RESTART 0
2309#endif 2822#endif
2310 2823
2824#if EV_SIGNAL_ENABLE
2825
2311void noinline 2826void noinline
2312ev_signal_start (EV_P_ ev_signal *w) 2827ev_signal_start (EV_P_ ev_signal *w)
2313{ 2828{
2314#if EV_MULTIPLICITY
2315 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2316#endif
2317 if (expect_false (ev_is_active (w))) 2829 if (expect_false (ev_is_active (w)))
2318 return; 2830 return;
2319 2831
2320 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2832 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2321 2833
2322 evpipe_init (EV_A); 2834#if EV_MULTIPLICITY
2835 assert (("libev: a signal must not be attached to two different loops",
2836 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2323 2837
2324 EV_FREQUENT_CHECK; 2838 signals [w->signum - 1].loop = EV_A;
2839#endif
2325 2840
2841 EV_FREQUENT_CHECK;
2842
2843#if EV_USE_SIGNALFD
2844 if (sigfd == -2)
2326 { 2845 {
2327#ifndef _WIN32 2846 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2328 sigset_t full, prev; 2847 if (sigfd < 0 && errno == EINVAL)
2329 sigfillset (&full); 2848 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2330 sigprocmask (SIG_SETMASK, &full, &prev);
2331#endif
2332 2849
2333 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2850 if (sigfd >= 0)
2851 {
2852 fd_intern (sigfd); /* doing it twice will not hurt */
2334 2853
2335#ifndef _WIN32 2854 sigemptyset (&sigfd_set);
2336 sigprocmask (SIG_SETMASK, &prev, 0); 2855
2337#endif 2856 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2857 ev_set_priority (&sigfd_w, EV_MAXPRI);
2858 ev_io_start (EV_A_ &sigfd_w);
2859 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2860 }
2338 } 2861 }
2862
2863 if (sigfd >= 0)
2864 {
2865 /* TODO: check .head */
2866 sigaddset (&sigfd_set, w->signum);
2867 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2868
2869 signalfd (sigfd, &sigfd_set, 0);
2870 }
2871#endif
2339 2872
2340 ev_start (EV_A_ (W)w, 1); 2873 ev_start (EV_A_ (W)w, 1);
2341 wlist_add (&signals [w->signum - 1].head, (WL)w); 2874 wlist_add (&signals [w->signum - 1].head, (WL)w);
2342 2875
2343 if (!((WL)w)->next) 2876 if (!((WL)w)->next)
2877# if EV_USE_SIGNALFD
2878 if (sigfd < 0) /*TODO*/
2879# endif
2344 { 2880 {
2345#if _WIN32 2881# ifdef _WIN32
2882 evpipe_init (EV_A);
2883
2346 signal (w->signum, ev_sighandler); 2884 signal (w->signum, ev_sighandler);
2347#else 2885# else
2348 struct sigaction sa; 2886 struct sigaction sa;
2887
2888 evpipe_init (EV_A);
2889
2349 sa.sa_handler = ev_sighandler; 2890 sa.sa_handler = ev_sighandler;
2350 sigfillset (&sa.sa_mask); 2891 sigfillset (&sa.sa_mask);
2351 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2892 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2352 sigaction (w->signum, &sa, 0); 2893 sigaction (w->signum, &sa, 0);
2894
2895 if (origflags & EVFLAG_NOSIGMASK)
2896 {
2897 sigemptyset (&sa.sa_mask);
2898 sigaddset (&sa.sa_mask, w->signum);
2899 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2900 }
2353#endif 2901#endif
2354 } 2902 }
2355 2903
2356 EV_FREQUENT_CHECK; 2904 EV_FREQUENT_CHECK;
2357} 2905}
2358 2906
2359void noinline 2907void noinline
… …
2367 2915
2368 wlist_del (&signals [w->signum - 1].head, (WL)w); 2916 wlist_del (&signals [w->signum - 1].head, (WL)w);
2369 ev_stop (EV_A_ (W)w); 2917 ev_stop (EV_A_ (W)w);
2370 2918
2371 if (!signals [w->signum - 1].head) 2919 if (!signals [w->signum - 1].head)
2920 {
2921#if EV_MULTIPLICITY
2922 signals [w->signum - 1].loop = 0; /* unattach from signal */
2923#endif
2924#if EV_USE_SIGNALFD
2925 if (sigfd >= 0)
2926 {
2927 sigset_t ss;
2928
2929 sigemptyset (&ss);
2930 sigaddset (&ss, w->signum);
2931 sigdelset (&sigfd_set, w->signum);
2932
2933 signalfd (sigfd, &sigfd_set, 0);
2934 sigprocmask (SIG_UNBLOCK, &ss, 0);
2935 }
2936 else
2937#endif
2372 signal (w->signum, SIG_DFL); 2938 signal (w->signum, SIG_DFL);
2939 }
2373 2940
2374 EV_FREQUENT_CHECK; 2941 EV_FREQUENT_CHECK;
2375} 2942}
2943
2944#endif
2945
2946#if EV_CHILD_ENABLE
2376 2947
2377void 2948void
2378ev_child_start (EV_P_ ev_child *w) 2949ev_child_start (EV_P_ ev_child *w)
2379{ 2950{
2380#if EV_MULTIPLICITY 2951#if EV_MULTIPLICITY
2381 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2952 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2382#endif 2953#endif
2383 if (expect_false (ev_is_active (w))) 2954 if (expect_false (ev_is_active (w)))
2384 return; 2955 return;
2385 2956
2386 EV_FREQUENT_CHECK; 2957 EV_FREQUENT_CHECK;
2387 2958
2388 ev_start (EV_A_ (W)w, 1); 2959 ev_start (EV_A_ (W)w, 1);
2389 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2960 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2390 2961
2391 EV_FREQUENT_CHECK; 2962 EV_FREQUENT_CHECK;
2392} 2963}
2393 2964
2394void 2965void
… …
2398 if (expect_false (!ev_is_active (w))) 2969 if (expect_false (!ev_is_active (w)))
2399 return; 2970 return;
2400 2971
2401 EV_FREQUENT_CHECK; 2972 EV_FREQUENT_CHECK;
2402 2973
2403 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2974 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2404 ev_stop (EV_A_ (W)w); 2975 ev_stop (EV_A_ (W)w);
2405 2976
2406 EV_FREQUENT_CHECK; 2977 EV_FREQUENT_CHECK;
2407} 2978}
2979
2980#endif
2408 2981
2409#if EV_STAT_ENABLE 2982#if EV_STAT_ENABLE
2410 2983
2411# ifdef _WIN32 2984# ifdef _WIN32
2412# undef lstat 2985# undef lstat
2413# define lstat(a,b) _stati64 (a,b) 2986# define lstat(a,b) _stati64 (a,b)
2414# endif 2987# endif
2415 2988
2416#define DEF_STAT_INTERVAL 5.0074891 2989#define DEF_STAT_INTERVAL 5.0074891
2990#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2417#define MIN_STAT_INTERVAL 0.1074891 2991#define MIN_STAT_INTERVAL 0.1074891
2418 2992
2419static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2993static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2420 2994
2421#if EV_USE_INOTIFY 2995#if EV_USE_INOTIFY
2422# define EV_INOTIFY_BUFSIZE 8192 2996
2997/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2998# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2423 2999
2424static void noinline 3000static void noinline
2425infy_add (EV_P_ ev_stat *w) 3001infy_add (EV_P_ ev_stat *w)
2426{ 3002{
2427 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); 3003 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);
2428 3004
2429 if (w->wd < 0) 3005 if (w->wd >= 0)
3006 {
3007 struct statfs sfs;
3008
3009 /* now local changes will be tracked by inotify, but remote changes won't */
3010 /* unless the filesystem is known to be local, we therefore still poll */
3011 /* also do poll on <2.6.25, but with normal frequency */
3012
3013 if (!fs_2625)
3014 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3015 else if (!statfs (w->path, &sfs)
3016 && (sfs.f_type == 0x1373 /* devfs */
3017 || sfs.f_type == 0xEF53 /* ext2/3 */
3018 || sfs.f_type == 0x3153464a /* jfs */
3019 || sfs.f_type == 0x52654973 /* reiser3 */
3020 || sfs.f_type == 0x01021994 /* tempfs */
3021 || sfs.f_type == 0x58465342 /* xfs */))
3022 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3023 else
3024 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2430 { 3025 }
2431 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3026 else
3027 {
3028 /* can't use inotify, continue to stat */
3029 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2432 3030
2433 /* monitor some parent directory for speedup hints */ 3031 /* if path is not there, monitor some parent directory for speedup hints */
2434 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3032 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2435 /* but an efficiency issue only */ 3033 /* but an efficiency issue only */
2436 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3034 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2437 { 3035 {
2438 char path [4096]; 3036 char path [4096];
2439 strcpy (path, w->path); 3037 strcpy (path, w->path);
… …
2443 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3041 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2444 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3042 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2445 3043
2446 char *pend = strrchr (path, '/'); 3044 char *pend = strrchr (path, '/');
2447 3045
2448 if (!pend) 3046 if (!pend || pend == path)
2449 break; /* whoops, no '/', complain to your admin */ 3047 break;
2450 3048
2451 *pend = 0; 3049 *pend = 0;
2452 w->wd = inotify_add_watch (fs_fd, path, mask); 3050 w->wd = inotify_add_watch (fs_fd, path, mask);
2453 } 3051 }
2454 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3052 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2455 } 3053 }
2456 } 3054 }
2457 else
2458 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2459 3055
2460 if (w->wd >= 0) 3056 if (w->wd >= 0)
2461 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3057 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3058
3059 /* now re-arm timer, if required */
3060 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3061 ev_timer_again (EV_A_ &w->timer);
3062 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2462} 3063}
2463 3064
2464static void noinline 3065static void noinline
2465infy_del (EV_P_ ev_stat *w) 3066infy_del (EV_P_ ev_stat *w)
2466{ 3067{
… …
2469 3070
2470 if (wd < 0) 3071 if (wd < 0)
2471 return; 3072 return;
2472 3073
2473 w->wd = -2; 3074 w->wd = -2;
2474 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3075 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2475 wlist_del (&fs_hash [slot].head, (WL)w); 3076 wlist_del (&fs_hash [slot].head, (WL)w);
2476 3077
2477 /* remove this watcher, if others are watching it, they will rearm */ 3078 /* remove this watcher, if others are watching it, they will rearm */
2478 inotify_rm_watch (fs_fd, wd); 3079 inotify_rm_watch (fs_fd, wd);
2479} 3080}
… …
2481static void noinline 3082static void noinline
2482infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3083infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2483{ 3084{
2484 if (slot < 0) 3085 if (slot < 0)
2485 /* overflow, need to check for all hash slots */ 3086 /* overflow, need to check for all hash slots */
2486 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3087 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2487 infy_wd (EV_A_ slot, wd, ev); 3088 infy_wd (EV_A_ slot, wd, ev);
2488 else 3089 else
2489 { 3090 {
2490 WL w_; 3091 WL w_;
2491 3092
2492 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3093 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2493 { 3094 {
2494 ev_stat *w = (ev_stat *)w_; 3095 ev_stat *w = (ev_stat *)w_;
2495 w_ = w_->next; /* lets us remove this watcher and all before it */ 3096 w_ = w_->next; /* lets us remove this watcher and all before it */
2496 3097
2497 if (w->wd == wd || wd == -1) 3098 if (w->wd == wd || wd == -1)
2498 { 3099 {
2499 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3100 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2500 { 3101 {
3102 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2501 w->wd = -1; 3103 w->wd = -1;
2502 infy_add (EV_A_ w); /* re-add, no matter what */ 3104 infy_add (EV_A_ w); /* re-add, no matter what */
2503 } 3105 }
2504 3106
2505 stat_timer_cb (EV_A_ &w->timer, 0); 3107 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2510 3112
2511static void 3113static void
2512infy_cb (EV_P_ ev_io *w, int revents) 3114infy_cb (EV_P_ ev_io *w, int revents)
2513{ 3115{
2514 char buf [EV_INOTIFY_BUFSIZE]; 3116 char buf [EV_INOTIFY_BUFSIZE];
2515 struct inotify_event *ev = (struct inotify_event *)buf;
2516 int ofs; 3117 int ofs;
2517 int len = read (fs_fd, buf, sizeof (buf)); 3118 int len = read (fs_fd, buf, sizeof (buf));
2518 3119
2519 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3120 for (ofs = 0; ofs < len; )
3121 {
3122 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2520 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3123 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3124 ofs += sizeof (struct inotify_event) + ev->len;
3125 }
2521} 3126}
2522 3127
2523void inline_size 3128inline_size void
2524infy_init (EV_P) 3129ev_check_2625 (EV_P)
2525{ 3130{
2526 if (fs_fd != -2)
2527 return;
2528
2529 /* kernels < 2.6.25 are borked 3131 /* kernels < 2.6.25 are borked
2530 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3132 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2531 */ 3133 */
2532 { 3134 if (ev_linux_version () < 0x020619)
2533 struct utsname buf; 3135 return;
2534 int major, minor, micro;
2535 3136
3137 fs_2625 = 1;
3138}
3139
3140inline_size int
3141infy_newfd (void)
3142{
3143#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3144 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3145 if (fd >= 0)
3146 return fd;
3147#endif
3148 return inotify_init ();
3149}
3150
3151inline_size void
3152infy_init (EV_P)
3153{
3154 if (fs_fd != -2)
3155 return;
3156
2536 fs_fd = -1; 3157 fs_fd = -1;
2537 3158
2538 if (uname (&buf)) 3159 ev_check_2625 (EV_A);
2539 return;
2540 3160
2541 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2542 return;
2543
2544 if (major < 2
2545 || (major == 2 && minor < 6)
2546 || (major == 2 && minor == 6 && micro < 25))
2547 return;
2548 }
2549
2550 fs_fd = inotify_init (); 3161 fs_fd = infy_newfd ();
2551 3162
2552 if (fs_fd >= 0) 3163 if (fs_fd >= 0)
2553 { 3164 {
3165 fd_intern (fs_fd);
2554 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3166 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2555 ev_set_priority (&fs_w, EV_MAXPRI); 3167 ev_set_priority (&fs_w, EV_MAXPRI);
2556 ev_io_start (EV_A_ &fs_w); 3168 ev_io_start (EV_A_ &fs_w);
3169 ev_unref (EV_A);
2557 } 3170 }
2558} 3171}
2559 3172
2560void inline_size 3173inline_size void
2561infy_fork (EV_P) 3174infy_fork (EV_P)
2562{ 3175{
2563 int slot; 3176 int slot;
2564 3177
2565 if (fs_fd < 0) 3178 if (fs_fd < 0)
2566 return; 3179 return;
2567 3180
3181 ev_ref (EV_A);
3182 ev_io_stop (EV_A_ &fs_w);
2568 close (fs_fd); 3183 close (fs_fd);
2569 fs_fd = inotify_init (); 3184 fs_fd = infy_newfd ();
2570 3185
3186 if (fs_fd >= 0)
3187 {
3188 fd_intern (fs_fd);
3189 ev_io_set (&fs_w, fs_fd, EV_READ);
3190 ev_io_start (EV_A_ &fs_w);
3191 ev_unref (EV_A);
3192 }
3193
2571 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3194 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2572 { 3195 {
2573 WL w_ = fs_hash [slot].head; 3196 WL w_ = fs_hash [slot].head;
2574 fs_hash [slot].head = 0; 3197 fs_hash [slot].head = 0;
2575 3198
2576 while (w_) 3199 while (w_)
… …
2581 w->wd = -1; 3204 w->wd = -1;
2582 3205
2583 if (fs_fd >= 0) 3206 if (fs_fd >= 0)
2584 infy_add (EV_A_ w); /* re-add, no matter what */ 3207 infy_add (EV_A_ w); /* re-add, no matter what */
2585 else 3208 else
3209 {
3210 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3211 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2586 ev_timer_start (EV_A_ &w->timer); 3212 ev_timer_again (EV_A_ &w->timer);
3213 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3214 }
2587 } 3215 }
2588 } 3216 }
2589} 3217}
2590 3218
2591#endif 3219#endif
… …
2608static void noinline 3236static void noinline
2609stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3237stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2610{ 3238{
2611 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3239 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2612 3240
2613 /* we copy this here each the time so that */ 3241 ev_statdata prev = w->attr;
2614 /* prev has the old value when the callback gets invoked */
2615 w->prev = w->attr;
2616 ev_stat_stat (EV_A_ w); 3242 ev_stat_stat (EV_A_ w);
2617 3243
2618 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3244 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2619 if ( 3245 if (
2620 w->prev.st_dev != w->attr.st_dev 3246 prev.st_dev != w->attr.st_dev
2621 || w->prev.st_ino != w->attr.st_ino 3247 || prev.st_ino != w->attr.st_ino
2622 || w->prev.st_mode != w->attr.st_mode 3248 || prev.st_mode != w->attr.st_mode
2623 || w->prev.st_nlink != w->attr.st_nlink 3249 || prev.st_nlink != w->attr.st_nlink
2624 || w->prev.st_uid != w->attr.st_uid 3250 || prev.st_uid != w->attr.st_uid
2625 || w->prev.st_gid != w->attr.st_gid 3251 || prev.st_gid != w->attr.st_gid
2626 || w->prev.st_rdev != w->attr.st_rdev 3252 || prev.st_rdev != w->attr.st_rdev
2627 || w->prev.st_size != w->attr.st_size 3253 || prev.st_size != w->attr.st_size
2628 || w->prev.st_atime != w->attr.st_atime 3254 || prev.st_atime != w->attr.st_atime
2629 || w->prev.st_mtime != w->attr.st_mtime 3255 || prev.st_mtime != w->attr.st_mtime
2630 || w->prev.st_ctime != w->attr.st_ctime 3256 || prev.st_ctime != w->attr.st_ctime
2631 ) { 3257 ) {
3258 /* we only update w->prev on actual differences */
3259 /* in case we test more often than invoke the callback, */
3260 /* to ensure that prev is always different to attr */
3261 w->prev = prev;
3262
2632 #if EV_USE_INOTIFY 3263 #if EV_USE_INOTIFY
2633 if (fs_fd >= 0) 3264 if (fs_fd >= 0)
2634 { 3265 {
2635 infy_del (EV_A_ w); 3266 infy_del (EV_A_ w);
2636 infy_add (EV_A_ w); 3267 infy_add (EV_A_ w);
… …
2646ev_stat_start (EV_P_ ev_stat *w) 3277ev_stat_start (EV_P_ ev_stat *w)
2647{ 3278{
2648 if (expect_false (ev_is_active (w))) 3279 if (expect_false (ev_is_active (w)))
2649 return; 3280 return;
2650 3281
2651 /* since we use memcmp, we need to clear any padding data etc. */
2652 memset (&w->prev, 0, sizeof (ev_statdata));
2653 memset (&w->attr, 0, sizeof (ev_statdata));
2654
2655 ev_stat_stat (EV_A_ w); 3282 ev_stat_stat (EV_A_ w);
2656 3283
3284 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2657 if (w->interval < MIN_STAT_INTERVAL) 3285 w->interval = MIN_STAT_INTERVAL;
2658 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2659 3286
2660 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3287 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2661 ev_set_priority (&w->timer, ev_priority (w)); 3288 ev_set_priority (&w->timer, ev_priority (w));
2662 3289
2663#if EV_USE_INOTIFY 3290#if EV_USE_INOTIFY
2664 infy_init (EV_A); 3291 infy_init (EV_A);
2665 3292
2666 if (fs_fd >= 0) 3293 if (fs_fd >= 0)
2667 infy_add (EV_A_ w); 3294 infy_add (EV_A_ w);
2668 else 3295 else
2669#endif 3296#endif
3297 {
2670 ev_timer_start (EV_A_ &w->timer); 3298 ev_timer_again (EV_A_ &w->timer);
3299 ev_unref (EV_A);
3300 }
2671 3301
2672 ev_start (EV_A_ (W)w, 1); 3302 ev_start (EV_A_ (W)w, 1);
2673 3303
2674 EV_FREQUENT_CHECK; 3304 EV_FREQUENT_CHECK;
2675} 3305}
… …
2684 EV_FREQUENT_CHECK; 3314 EV_FREQUENT_CHECK;
2685 3315
2686#if EV_USE_INOTIFY 3316#if EV_USE_INOTIFY
2687 infy_del (EV_A_ w); 3317 infy_del (EV_A_ w);
2688#endif 3318#endif
3319
3320 if (ev_is_active (&w->timer))
3321 {
3322 ev_ref (EV_A);
2689 ev_timer_stop (EV_A_ &w->timer); 3323 ev_timer_stop (EV_A_ &w->timer);
3324 }
2690 3325
2691 ev_stop (EV_A_ (W)w); 3326 ev_stop (EV_A_ (W)w);
2692 3327
2693 EV_FREQUENT_CHECK; 3328 EV_FREQUENT_CHECK;
2694} 3329}
… …
2739 3374
2740 EV_FREQUENT_CHECK; 3375 EV_FREQUENT_CHECK;
2741} 3376}
2742#endif 3377#endif
2743 3378
3379#if EV_PREPARE_ENABLE
2744void 3380void
2745ev_prepare_start (EV_P_ ev_prepare *w) 3381ev_prepare_start (EV_P_ ev_prepare *w)
2746{ 3382{
2747 if (expect_false (ev_is_active (w))) 3383 if (expect_false (ev_is_active (w)))
2748 return; 3384 return;
… …
2774 3410
2775 ev_stop (EV_A_ (W)w); 3411 ev_stop (EV_A_ (W)w);
2776 3412
2777 EV_FREQUENT_CHECK; 3413 EV_FREQUENT_CHECK;
2778} 3414}
3415#endif
2779 3416
3417#if EV_CHECK_ENABLE
2780void 3418void
2781ev_check_start (EV_P_ ev_check *w) 3419ev_check_start (EV_P_ ev_check *w)
2782{ 3420{
2783 if (expect_false (ev_is_active (w))) 3421 if (expect_false (ev_is_active (w)))
2784 return; 3422 return;
… …
2810 3448
2811 ev_stop (EV_A_ (W)w); 3449 ev_stop (EV_A_ (W)w);
2812 3450
2813 EV_FREQUENT_CHECK; 3451 EV_FREQUENT_CHECK;
2814} 3452}
3453#endif
2815 3454
2816#if EV_EMBED_ENABLE 3455#if EV_EMBED_ENABLE
2817void noinline 3456void noinline
2818ev_embed_sweep (EV_P_ ev_embed *w) 3457ev_embed_sweep (EV_P_ ev_embed *w)
2819{ 3458{
2820 ev_loop (w->other, EVLOOP_NONBLOCK); 3459 ev_run (w->other, EVRUN_NOWAIT);
2821} 3460}
2822 3461
2823static void 3462static void
2824embed_io_cb (EV_P_ ev_io *io, int revents) 3463embed_io_cb (EV_P_ ev_io *io, int revents)
2825{ 3464{
2826 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3465 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2827 3466
2828 if (ev_cb (w)) 3467 if (ev_cb (w))
2829 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3468 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2830 else 3469 else
2831 ev_loop (w->other, EVLOOP_NONBLOCK); 3470 ev_run (w->other, EVRUN_NOWAIT);
2832} 3471}
2833 3472
2834static void 3473static void
2835embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3474embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2836{ 3475{
2837 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3476 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2838 3477
2839 { 3478 {
2840 struct ev_loop *loop = w->other; 3479 EV_P = w->other;
2841 3480
2842 while (fdchangecnt) 3481 while (fdchangecnt)
2843 { 3482 {
2844 fd_reify (EV_A); 3483 fd_reify (EV_A);
2845 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3484 ev_run (EV_A_ EVRUN_NOWAIT);
2846 } 3485 }
2847 } 3486 }
2848} 3487}
2849 3488
2850static void 3489static void
2851embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3490embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2852{ 3491{
2853 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3492 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2854 3493
3494 ev_embed_stop (EV_A_ w);
3495
2855 { 3496 {
2856 struct ev_loop *loop = w->other; 3497 EV_P = w->other;
2857 3498
2858 ev_loop_fork (EV_A); 3499 ev_loop_fork (EV_A);
3500 ev_run (EV_A_ EVRUN_NOWAIT);
2859 } 3501 }
3502
3503 ev_embed_start (EV_A_ w);
2860} 3504}
2861 3505
2862#if 0 3506#if 0
2863static void 3507static void
2864embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3508embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2872{ 3516{
2873 if (expect_false (ev_is_active (w))) 3517 if (expect_false (ev_is_active (w)))
2874 return; 3518 return;
2875 3519
2876 { 3520 {
2877 struct ev_loop *loop = w->other; 3521 EV_P = w->other;
2878 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3522 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2879 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3523 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2880 } 3524 }
2881 3525
2882 EV_FREQUENT_CHECK; 3526 EV_FREQUENT_CHECK;
2883 3527
… …
2909 3553
2910 ev_io_stop (EV_A_ &w->io); 3554 ev_io_stop (EV_A_ &w->io);
2911 ev_prepare_stop (EV_A_ &w->prepare); 3555 ev_prepare_stop (EV_A_ &w->prepare);
2912 ev_fork_stop (EV_A_ &w->fork); 3556 ev_fork_stop (EV_A_ &w->fork);
2913 3557
3558 ev_stop (EV_A_ (W)w);
3559
2914 EV_FREQUENT_CHECK; 3560 EV_FREQUENT_CHECK;
2915} 3561}
2916#endif 3562#endif
2917 3563
2918#if EV_FORK_ENABLE 3564#if EV_FORK_ENABLE
… …
2951 3597
2952 EV_FREQUENT_CHECK; 3598 EV_FREQUENT_CHECK;
2953} 3599}
2954#endif 3600#endif
2955 3601
2956#if EV_ASYNC_ENABLE 3602#if EV_CLEANUP_ENABLE
2957void 3603void
2958ev_async_start (EV_P_ ev_async *w) 3604ev_cleanup_start (EV_P_ ev_cleanup *w)
2959{ 3605{
2960 if (expect_false (ev_is_active (w))) 3606 if (expect_false (ev_is_active (w)))
2961 return; 3607 return;
3608
3609 EV_FREQUENT_CHECK;
3610
3611 ev_start (EV_A_ (W)w, ++cleanupcnt);
3612 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3613 cleanups [cleanupcnt - 1] = w;
3614
3615 /* cleanup watchers should never keep a refcount on the loop */
3616 ev_unref (EV_A);
3617 EV_FREQUENT_CHECK;
3618}
3619
3620void
3621ev_cleanup_stop (EV_P_ ev_cleanup *w)
3622{
3623 clear_pending (EV_A_ (W)w);
3624 if (expect_false (!ev_is_active (w)))
3625 return;
3626
3627 EV_FREQUENT_CHECK;
3628 ev_ref (EV_A);
3629
3630 {
3631 int active = ev_active (w);
3632
3633 cleanups [active - 1] = cleanups [--cleanupcnt];
3634 ev_active (cleanups [active - 1]) = active;
3635 }
3636
3637 ev_stop (EV_A_ (W)w);
3638
3639 EV_FREQUENT_CHECK;
3640}
3641#endif
3642
3643#if EV_ASYNC_ENABLE
3644void
3645ev_async_start (EV_P_ ev_async *w)
3646{
3647 if (expect_false (ev_is_active (w)))
3648 return;
3649
3650 w->sent = 0;
2962 3651
2963 evpipe_init (EV_A); 3652 evpipe_init (EV_A);
2964 3653
2965 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
2966 3655
… …
2994 3683
2995void 3684void
2996ev_async_send (EV_P_ ev_async *w) 3685ev_async_send (EV_P_ ev_async *w)
2997{ 3686{
2998 w->sent = 1; 3687 w->sent = 1;
2999 evpipe_write (EV_A_ &gotasync); 3688 evpipe_write (EV_A_ &async_pending);
3000} 3689}
3001#endif 3690#endif
3002 3691
3003/*****************************************************************************/ 3692/*****************************************************************************/
3004 3693
… …
3044{ 3733{
3045 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3734 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3046 3735
3047 if (expect_false (!once)) 3736 if (expect_false (!once))
3048 { 3737 {
3049 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3738 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3050 return; 3739 return;
3051 } 3740 }
3052 3741
3053 once->cb = cb; 3742 once->cb = cb;
3054 once->arg = arg; 3743 once->arg = arg;
… …
3066 ev_timer_set (&once->to, timeout, 0.); 3755 ev_timer_set (&once->to, timeout, 0.);
3067 ev_timer_start (EV_A_ &once->to); 3756 ev_timer_start (EV_A_ &once->to);
3068 } 3757 }
3069} 3758}
3070 3759
3760/*****************************************************************************/
3761
3762#if EV_WALK_ENABLE
3763void
3764ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3765{
3766 int i, j;
3767 ev_watcher_list *wl, *wn;
3768
3769 if (types & (EV_IO | EV_EMBED))
3770 for (i = 0; i < anfdmax; ++i)
3771 for (wl = anfds [i].head; wl; )
3772 {
3773 wn = wl->next;
3774
3775#if EV_EMBED_ENABLE
3776 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3777 {
3778 if (types & EV_EMBED)
3779 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3780 }
3781 else
3782#endif
3783#if EV_USE_INOTIFY
3784 if (ev_cb ((ev_io *)wl) == infy_cb)
3785 ;
3786 else
3787#endif
3788 if ((ev_io *)wl != &pipe_w)
3789 if (types & EV_IO)
3790 cb (EV_A_ EV_IO, wl);
3791
3792 wl = wn;
3793 }
3794
3795 if (types & (EV_TIMER | EV_STAT))
3796 for (i = timercnt + HEAP0; i-- > HEAP0; )
3797#if EV_STAT_ENABLE
3798 /*TODO: timer is not always active*/
3799 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3800 {
3801 if (types & EV_STAT)
3802 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3803 }
3804 else
3805#endif
3806 if (types & EV_TIMER)
3807 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3808
3809#if EV_PERIODIC_ENABLE
3810 if (types & EV_PERIODIC)
3811 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3812 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3813#endif
3814
3815#if EV_IDLE_ENABLE
3816 if (types & EV_IDLE)
3817 for (j = NUMPRI; i--; )
3818 for (i = idlecnt [j]; i--; )
3819 cb (EV_A_ EV_IDLE, idles [j][i]);
3820#endif
3821
3822#if EV_FORK_ENABLE
3823 if (types & EV_FORK)
3824 for (i = forkcnt; i--; )
3825 if (ev_cb (forks [i]) != embed_fork_cb)
3826 cb (EV_A_ EV_FORK, forks [i]);
3827#endif
3828
3829#if EV_ASYNC_ENABLE
3830 if (types & EV_ASYNC)
3831 for (i = asynccnt; i--; )
3832 cb (EV_A_ EV_ASYNC, asyncs [i]);
3833#endif
3834
3835#if EV_PREPARE_ENABLE
3836 if (types & EV_PREPARE)
3837 for (i = preparecnt; i--; )
3838# if EV_EMBED_ENABLE
3839 if (ev_cb (prepares [i]) != embed_prepare_cb)
3840# endif
3841 cb (EV_A_ EV_PREPARE, prepares [i]);
3842#endif
3843
3844#if EV_CHECK_ENABLE
3845 if (types & EV_CHECK)
3846 for (i = checkcnt; i--; )
3847 cb (EV_A_ EV_CHECK, checks [i]);
3848#endif
3849
3850#if EV_SIGNAL_ENABLE
3851 if (types & EV_SIGNAL)
3852 for (i = 0; i < EV_NSIG - 1; ++i)
3853 for (wl = signals [i].head; wl; )
3854 {
3855 wn = wl->next;
3856 cb (EV_A_ EV_SIGNAL, wl);
3857 wl = wn;
3858 }
3859#endif
3860
3861#if EV_CHILD_ENABLE
3862 if (types & EV_CHILD)
3863 for (i = (EV_PID_HASHSIZE); i--; )
3864 for (wl = childs [i]; wl; )
3865 {
3866 wn = wl->next;
3867 cb (EV_A_ EV_CHILD, wl);
3868 wl = wn;
3869 }
3870#endif
3871/* EV_STAT 0x00001000 /* stat data changed */
3872/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3873}
3874#endif
3875
3071#if EV_MULTIPLICITY 3876#if EV_MULTIPLICITY
3072 #include "ev_wrap.h" 3877 #include "ev_wrap.h"
3073#endif 3878#endif
3074 3879
3075#ifdef __cplusplus 3880EV_CPP(})
3076}
3077#endif
3078 3881

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