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Comparing libev/ev.c (file contents):
Revision 1.200 by root, Wed Dec 26 08:06:09 2007 UTC vs.
Revision 1.359 by root, Sun Oct 24 17:58:41 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus 40/* this big block deduces configuration from config.h */
41extern "C" {
42#endif
43
44#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
46# include EV_CONFIG_H 43# include EV_CONFIG_H
47# else 44# else
48# include "config.h" 45# include "config.h"
49# endif 46# endif
50 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
51# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
52# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
53# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
54# endif 65# endif
55# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
57# endif 68# endif
58# else 69# else
59# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
60# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
61# endif 72# endif
62# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
63# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
64# endif 75# endif
65# endif 76# endif
66 77
78# if HAVE_NANOSLEEP
67# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
68# if HAVE_NANOSLEEP
69# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
70# else 82# else
83# undef EV_USE_NANOSLEEP
71# 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
72# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
73# endif 94# endif
74 95
96# if HAVE_POLL && HAVE_POLL_H
75# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
76# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
77# define EV_USE_SELECT 1
78# else
79# define EV_USE_SELECT 0
80# endif 99# endif
81# endif
82
83# ifndef EV_USE_POLL
84# if HAVE_POLL && HAVE_POLL_H
85# define EV_USE_POLL 1
86# else 100# else
101# undef EV_USE_POLL
87# define EV_USE_POLL 0 102# define EV_USE_POLL 0
88# endif
89# endif 103# endif
90 104
91# ifndef EV_USE_EPOLL
92# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
93# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
94# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
95# define EV_USE_EPOLL 0
96# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
97# endif 112# endif
98 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
99# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
100# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
101# define EV_USE_KQUEUE 1
102# else
103# define EV_USE_KQUEUE 0
104# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
105# endif 121# endif
106 122
107# ifndef EV_USE_PORT
108# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
109# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
110# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
111# define EV_USE_PORT 0
112# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
113# endif 130# endif
114 131
115# ifndef EV_USE_INOTIFY
116# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
117# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
118# else
119# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
120# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
121# endif 139# endif
122 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
142# ifndef EV_USE_SIGNALFD
143# define EV_USE_SIGNALFD EV_FEATURE_OS
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
157# endif
158
123#endif 159#endif
124 160
125#include <math.h> 161#include <math.h>
126#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
127#include <fcntl.h> 164#include <fcntl.h>
128#include <stddef.h> 165#include <stddef.h>
129 166
130#include <stdio.h> 167#include <stdio.h>
131 168
132#include <assert.h> 169#include <assert.h>
133#include <errno.h> 170#include <errno.h>
134#include <sys/types.h> 171#include <sys/types.h>
135#include <time.h> 172#include <time.h>
173#include <limits.h>
136 174
137#include <signal.h> 175#include <signal.h>
138 176
139#ifdef EV_H 177#ifdef EV_H
140# include EV_H 178# include EV_H
141#else 179#else
142# include "ev.h" 180# include "ev.h"
143#endif 181#endif
182
183EV_CPP(extern "C" {)
144 184
145#ifndef _WIN32 185#ifndef _WIN32
146# include <sys/time.h> 186# include <sys/time.h>
147# include <sys/wait.h> 187# include <sys/wait.h>
148# include <unistd.h> 188# include <unistd.h>
149#else 189#else
190# include <io.h>
150# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
151# include <windows.h> 192# include <windows.h>
152# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
153# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
154# endif 195# endif
196# undef EV_AVOID_STDIO
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
206
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
155#endif 242# endif
156 243#endif
157/**/
158 244
159#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else
160# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
250# endif
161#endif 251#endif
162 252
163#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
164# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
165#endif 255#endif
166 256
167#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
258# if _POSIX_C_SOURCE >= 199309L
259# define EV_USE_NANOSLEEP EV_FEATURE_OS
260# else
168# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
262# endif
169#endif 263#endif
170 264
171#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
172# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
173#endif 267#endif
174 268
175#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
176# ifdef _WIN32 270# ifdef _WIN32
177# define EV_USE_POLL 0 271# define EV_USE_POLL 0
178# else 272# else
179# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
180# endif 274# endif
181#endif 275#endif
182 276
183#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
280# else
184# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
282# endif
185#endif 283#endif
186 284
187#ifndef EV_USE_KQUEUE 285#ifndef EV_USE_KQUEUE
188# define EV_USE_KQUEUE 0 286# define EV_USE_KQUEUE 0
189#endif 287#endif
… …
191#ifndef EV_USE_PORT 289#ifndef EV_USE_PORT
192# define EV_USE_PORT 0 290# define EV_USE_PORT 0
193#endif 291#endif
194 292
195#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
295# define EV_USE_INOTIFY EV_FEATURE_OS
296# else
196# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
298# endif
197#endif 299#endif
198 300
199#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
201# define EV_PID_HASHSIZE 1 303#endif
304
305#ifndef EV_INOTIFY_HASHSIZE
306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
307#endif
308
309#ifndef EV_USE_EVENTFD
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
311# define EV_USE_EVENTFD EV_FEATURE_OS
202# else 312# else
203# define EV_PID_HASHSIZE 16 313# define EV_USE_EVENTFD 0
204# endif 314# endif
205#endif 315#endif
206 316
207#ifndef EV_INOTIFY_HASHSIZE 317#ifndef EV_USE_SIGNALFD
208# if EV_MINIMAL 318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
209# define EV_INOTIFY_HASHSIZE 1 319# define EV_USE_SIGNALFD EV_FEATURE_OS
210# else 320# else
211# define EV_INOTIFY_HASHSIZE 16 321# define EV_USE_SIGNALFD 0
212# endif 322# endif
213#endif 323#endif
214 324
215/**/ 325#if 0 /* debugging */
326# define EV_VERIFY 3
327# define EV_USE_4HEAP 1
328# define EV_HEAP_CACHE_AT 1
329#endif
330
331#ifndef EV_VERIFY
332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
333#endif
334
335#ifndef EV_USE_4HEAP
336# define EV_USE_4HEAP EV_FEATURE_DATA
337#endif
338
339#ifndef EV_HEAP_CACHE_AT
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
355#endif
356
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
216 364
217#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
218# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
219# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
220#endif 368#endif
… …
234# include <sys/select.h> 382# include <sys/select.h>
235# endif 383# endif
236#endif 384#endif
237 385
238#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/statfs.h>
239# include <sys/inotify.h> 388# include <sys/inotify.h>
389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
390# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0
393# endif
240#endif 394#endif
241 395
242#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
243# include <winsock.h> 397# include <winsock.h>
244#endif 398#endif
245 399
400#if EV_USE_EVENTFD
401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
402# include <stdint.h>
403# ifndef EFD_NONBLOCK
404# define EFD_NONBLOCK O_NONBLOCK
405# endif
406# ifndef EFD_CLOEXEC
407# ifdef O_CLOEXEC
408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# 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};
436#endif
437
246/**/ 438/**/
439
440#if EV_VERIFY >= 3
441# define EV_FREQUENT_CHECK ev_verify (EV_A)
442#else
443# define EV_FREQUENT_CHECK do { } while (0)
444#endif
247 445
248/* 446/*
249 * This is used to avoid floating point rounding problems. 447 * This is used to avoid floating point rounding problems.
250 * It is added to ev_rt_now when scheduling periodics 448 * It is added to ev_rt_now when scheduling periodics
251 * to ensure progress, time-wise, even when rounding 449 * to ensure progress, time-wise, even when rounding
… …
255 */ 453 */
256#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
257 455
258#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) */
259#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) */
260/*#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)
261 461
262#if __GNUC__ >= 4 462#if __GNUC__ >= 4
263# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
264# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
265#else 465#else
266# define expect(expr,value) (expr) 466# define expect(expr,value) (expr)
267# define noinline 467# define noinline
268# if __STDC_VERSION__ < 199901L 468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
269# define inline 469# define inline
270# endif 470# endif
271#endif 471#endif
272 472
273#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
274#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
275#define inline_size static inline 475#define inline_size static inline
276 476
277#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
278# 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)
279#else 487#else
280# define inline_speed static inline
281#endif
282
283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
285 490
286#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
288 493
289typedef ev_watcher *W; 494typedef ev_watcher *W;
290typedef ev_watcher_list *WL; 495typedef ev_watcher_list *WL;
291typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
292 497
498#define ev_active(w) ((W)(w))->active
499#define ev_at(w) ((WT)(w))->at
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
293#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
294/* sig_atomic_t is used to avoid per-thread variables or locking but still */
295/* giving it a reasonably high chance of working on typical architetcures */
296static sig_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)
297#endif 519#endif
298 520
299#ifdef _WIN32 521#ifdef _WIN32
300# include "ev_win32.c" 522# include "ev_win32.c"
301#endif 523#endif
302 524
303/*****************************************************************************/ 525/*****************************************************************************/
304 526
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
305static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
306 578
307void 579void
308ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
309{ 581{
310 syserr_cb = cb; 582 syserr_cb = cb;
311} 583}
312 584
313static void noinline 585static void noinline
314syserr (const char *msg) 586ev_syserr (const char *msg)
315{ 587{
316 if (!msg) 588 if (!msg)
317 msg = "(libev) system error"; 589 msg = "(libev) system error";
318 590
319 if (syserr_cb) 591 if (syserr_cb)
320 syserr_cb (msg); 592 syserr_cb (msg);
321 else 593 else
322 { 594 {
595#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg);
599 ev_printerr (": ");
600 ev_printerr (err);
601 ev_printerr ("\n");
602#else
323 perror (msg); 603 perror (msg);
604#endif
324 abort (); 605 abort ();
325 } 606 }
326} 607}
327 608
609static void *
610ev_realloc_emul (void *ptr, long size)
611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
615 /* some systems, notably openbsd and darwin, fail to properly
616 * implement realloc (x, 0) (as required by both ansi c-89 and
617 * the single unix specification, so work around them here.
618 */
619
620 if (size)
621 return realloc (ptr, size);
622
623 free (ptr);
624 return 0;
625#endif
626}
627
328static void *(*alloc)(void *ptr, long size); 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
329 629
330void 630void
331ev_set_allocator (void *(*cb)(void *ptr, long size)) 631ev_set_allocator (void *(*cb)(void *ptr, long size))
332{ 632{
333 alloc = cb; 633 alloc = cb;
334} 634}
335 635
336inline_speed void * 636inline_speed void *
337ev_realloc (void *ptr, long size) 637ev_realloc (void *ptr, long size)
338{ 638{
339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 639 ptr = alloc (ptr, size);
340 640
341 if (!ptr && size) 641 if (!ptr && size)
342 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
343 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
344 abort (); 648 abort ();
345 } 649 }
346 650
347 return ptr; 651 return ptr;
348} 652}
… …
350#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
351#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
352 656
353/*****************************************************************************/ 657/*****************************************************************************/
354 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
355typedef struct 663typedef struct
356{ 664{
357 WL head; 665 WL head;
358 unsigned char events; 666 unsigned char events; /* the events watched for */
667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
359 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
360#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
361 SOCKET handle; 674 SOCKET handle;
362#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
363} ANFD; 679} ANFD;
364 680
681/* stores the pending event set for a given watcher */
365typedef struct 682typedef struct
366{ 683{
367 W w; 684 W w;
368 int events; 685 int events; /* the pending event set for the given watcher */
369} ANPENDING; 686} ANPENDING;
370 687
371#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
689/* hash table entry per inotify-id */
372typedef struct 690typedef struct
373{ 691{
374 WL head; 692 WL head;
375} ANFS; 693} ANFS;
694#endif
695
696/* Heap Entry */
697#if EV_HEAP_CACHE_AT
698 /* a heap element */
699 typedef struct {
700 ev_tstamp at;
701 WT w;
702 } ANHE;
703
704 #define ANHE_w(he) (he).w /* access watcher, read-write */
705 #define ANHE_at(he) (he).at /* access cached at, read-only */
706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
707#else
708 /* a heap element */
709 typedef WT ANHE;
710
711 #define ANHE_w(he) (he)
712 #define ANHE_at(he) (he)->at
713 #define ANHE_at_cache(he)
376#endif 714#endif
377 715
378#if EV_MULTIPLICITY 716#if EV_MULTIPLICITY
379 717
380 struct ev_loop 718 struct ev_loop
… …
399 737
400 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
401 739
402#endif 740#endif
403 741
742#if EV_FEATURE_API
743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
745# define EV_INVOKE_PENDING invoke_cb (EV_A)
746#else
747# define EV_RELEASE_CB (void)0
748# define EV_ACQUIRE_CB (void)0
749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
750#endif
751
752#define EVBREAK_RECURSE 0x80
753
404/*****************************************************************************/ 754/*****************************************************************************/
405 755
756#ifndef EV_HAVE_EV_TIME
406ev_tstamp 757ev_tstamp
407ev_time (void) 758ev_time (void)
408{ 759{
409#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
410 struct timespec ts; 763 struct timespec ts;
411 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
412 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
413#else 766 }
767#endif
768
414 struct timeval tv; 769 struct timeval tv;
415 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
416 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
417#endif
418} 772}
773#endif
419 774
420ev_tstamp inline_size 775inline_size ev_tstamp
421get_clock (void) 776get_clock (void)
422{ 777{
423#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
424 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
425 { 780 {
… …
446 if (delay > 0.) 801 if (delay > 0.)
447 { 802 {
448#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
449 struct timespec ts; 804 struct timespec ts;
450 805
451 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453
454 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
455#elif defined(_WIN32) 808#elif defined(_WIN32)
456 Sleep (delay * 1e3); 809 Sleep ((unsigned long)(delay * 1e3));
457#else 810#else
458 struct timeval tv; 811 struct timeval tv;
459 812
460 tv.tv_sec = (time_t)delay; 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 814 /* something not guaranteed by newer posix versions, but guaranteed */
462 815 /* by older ones */
816 EV_TV_SET (tv, delay);
463 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
464#endif 818#endif
465 } 819 }
466} 820}
467 821
468/*****************************************************************************/ 822/*****************************************************************************/
469 823
470int inline_size 824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
825
826/* find a suitable new size for the given array, */
827/* hopefully by rounding to a nice-to-malloc size */
828inline_size int
471array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
472{ 830{
473 int ncur = cur + 1; 831 int ncur = cur + 1;
474 832
475 do 833 do
476 ncur <<= 1; 834 ncur <<= 1;
477 while (cnt > ncur); 835 while (cnt > ncur);
478 836
479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 837 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096) 838 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481 { 839 {
482 ncur *= elem; 840 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 841 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484 ncur = ncur - sizeof (void *) * 4; 842 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem; 843 ncur /= elem;
486 } 844 }
487 845
488 return ncur; 846 return ncur;
… …
492array_realloc (int elem, void *base, int *cur, int cnt) 850array_realloc (int elem, void *base, int *cur, int cnt)
493{ 851{
494 *cur = array_nextsize (elem, *cur, cnt); 852 *cur = array_nextsize (elem, *cur, cnt);
495 return ev_realloc (base, elem * *cur); 853 return ev_realloc (base, elem * *cur);
496} 854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
497 858
498#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
499 if (expect_false ((cnt) > (cur))) \ 860 if (expect_false ((cnt) > (cur))) \
500 { \ 861 { \
501 int ocur_ = (cur); \ 862 int ocur_ = (cur); \
… …
513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514 } 875 }
515#endif 876#endif
516 877
517#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
519 880
520/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
521 888
522void noinline 889void noinline
523ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
524{ 891{
525 W w_ = (W)w; 892 W w_ = (W)w;
… …
534 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
535 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
536 } 903 }
537} 904}
538 905
539void inline_speed 906inline_speed void
907feed_reverse (EV_P_ W w)
908{
909 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
910 rfeeds [rfeedcnt++] = w;
911}
912
913inline_size void
914feed_reverse_done (EV_P_ int revents)
915{
916 do
917 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
918 while (rfeedcnt);
919}
920
921inline_speed void
540queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
541{ 923{
542 int i; 924 int i;
543 925
544 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
545 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
546} 928}
547 929
548/*****************************************************************************/ 930/*****************************************************************************/
549 931
550void inline_size 932inline_speed void
551anfds_init (ANFD *base, int count)
552{
553 while (count--)
554 {
555 base->head = 0;
556 base->events = EV_NONE;
557 base->reify = 0;
558
559 ++base;
560 }
561}
562
563void inline_speed
564fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
565{ 934{
566 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
567 ev_io *w; 936 ev_io *w;
568 937
569 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
573 if (ev) 942 if (ev)
574 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
575 } 944 }
576} 945}
577 946
947/* do not submit kernel events for fds that have reify set */
948/* because that means they changed while we were polling for new events */
949inline_speed void
950fd_event (EV_P_ int fd, int revents)
951{
952 ANFD *anfd = anfds + fd;
953
954 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents);
956}
957
578void 958void
579ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
580{ 960{
581 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
582 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
583} 963}
584 964
585void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
586fd_reify (EV_P) 968fd_reify (EV_P)
587{ 969{
588 int i; 970 int i;
589 971
590 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
591 { 973 {
592 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
593 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
594 ev_io *w; 976 ev_io *w;
595 977
596 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
597 980
598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
599 events |= (unsigned char)w->events;
600 982
601#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
602 if (events) 984 if (o_reify & EV__IOFDSET)
603 { 985 {
604 unsigned long argp; 986 unsigned long arg;
605 #ifdef EV_FD_TO_WIN32_HANDLE
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
607 #else
608 anfd->handle = _get_osfhandle (fd);
609 #endif
610 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
611 } 990 }
612#endif 991#endif
613 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
614 { 994 {
615 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify;
617
618 anfd->reify = 0;
619 anfd->events = events; 995 anfd->events = 0;
620 996
621 if (o_events != events || o_reify & EV_IOFDSET) 997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
623 }
624 } 1006 }
625 1007
626 fdchangecnt = 0; 1008 fdchangecnt = 0;
627} 1009}
628 1010
629void inline_size 1011/* something about the given fd changed */
1012inline_size void
630fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
631{ 1014{
632 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
633 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
634 1017
… …
638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
639 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
640 } 1023 }
641} 1024}
642 1025
643void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
644fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
645{ 1029{
646 ev_io *w; 1030 ev_io *w;
647 1031
648 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
650 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
651 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652 } 1036 }
653} 1037}
654 1038
655int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
656fd_valid (int fd) 1041fd_valid (int fd)
657{ 1042{
658#ifdef _WIN32 1043#ifdef _WIN32
659 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
660#else 1045#else
661 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
662#endif 1047#endif
663} 1048}
664 1049
… …
668{ 1053{
669 int fd; 1054 int fd;
670 1055
671 for (fd = 0; fd < anfdmax; ++fd) 1056 for (fd = 0; fd < anfdmax; ++fd)
672 if (anfds [fd].events) 1057 if (anfds [fd].events)
673 if (!fd_valid (fd) == -1 && errno == EBADF) 1058 if (!fd_valid (fd) && errno == EBADF)
674 fd_kill (EV_A_ fd); 1059 fd_kill (EV_A_ fd);
675} 1060}
676 1061
677/* called on ENOMEM in select/poll to kill some fds and retry */ 1062/* called on ENOMEM in select/poll to kill some fds and retry */
678static void noinline 1063static void noinline
… …
682 1067
683 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
684 if (anfds [fd].events) 1069 if (anfds [fd].events)
685 { 1070 {
686 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
687 return; 1072 break;
688 } 1073 }
689} 1074}
690 1075
691/* usually called after fork if backend needs to re-arm all fds from scratch */ 1076/* usually called after fork if backend needs to re-arm all fds from scratch */
692static void noinline 1077static void noinline
… …
696 1081
697 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
698 if (anfds [fd].events) 1083 if (anfds [fd].events)
699 { 1084 {
700 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
1086 anfds [fd].emask = 0;
701 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
702 } 1088 }
703} 1089}
704 1090
705/*****************************************************************************/ 1091/* used to prepare libev internal fd's */
706 1092/* this is not fork-safe */
707void inline_speed 1093inline_speed void
708upheap (WT *heap, int k)
709{
710 WT w = heap [k];
711
712 while (k)
713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
719 heap [k] = heap [p];
720 ((W)heap [k])->active = k + 1;
721 k = p;
722 }
723
724 heap [k] = w;
725 ((W)heap [k])->active = k + 1;
726}
727
728void inline_speed
729downheap (WT *heap, int N, int k)
730{
731 WT w = heap [k];
732
733 for (;;)
734 {
735 int c = (k << 1) + 1;
736
737 if (c >= N)
738 break;
739
740 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
741 ? 1 : 0;
742
743 if (w->at <= heap [c]->at)
744 break;
745
746 heap [k] = heap [c];
747 ((W)heap [k])->active = k + 1;
748
749 k = c;
750 }
751
752 heap [k] = w;
753 ((W)heap [k])->active = k + 1;
754}
755
756void inline_size
757adjustheap (WT *heap, int N, int k)
758{
759 upheap (heap, k);
760 downheap (heap, N, k);
761}
762
763/*****************************************************************************/
764
765typedef struct
766{
767 WL head;
768 sig_atomic_t volatile gotsig;
769} ANSIG;
770
771static ANSIG *signals;
772static int signalmax;
773
774static int sigpipe [2];
775static sig_atomic_t volatile gotsig;
776static ev_io sigev;
777
778void inline_size
779signals_init (ANSIG *base, int count)
780{
781 while (count--)
782 {
783 base->head = 0;
784 base->gotsig = 0;
785
786 ++base;
787 }
788}
789
790static void
791sighandler (int signum)
792{
793#if _WIN32
794 signal (signum, sighandler);
795#endif
796
797 signals [signum - 1].gotsig = 1;
798
799 if (!gotsig)
800 {
801 int old_errno = errno;
802 gotsig = 1;
803 write (sigpipe [1], &signum, 1);
804 errno = old_errno;
805 }
806}
807
808void noinline
809ev_feed_signal_event (EV_P_ int signum)
810{
811 WL w;
812
813#if EV_MULTIPLICITY
814 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
815#endif
816
817 --signum;
818
819 if (signum < 0 || signum >= signalmax)
820 return;
821
822 signals [signum].gotsig = 0;
823
824 for (w = signals [signum].head; w; w = w->next)
825 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
826}
827
828static void
829sigcb (EV_P_ ev_io *iow, int revents)
830{
831 int signum;
832
833 read (sigpipe [0], &revents, 1);
834 gotsig = 0;
835
836 for (signum = signalmax; signum--; )
837 if (signals [signum].gotsig)
838 ev_feed_signal_event (EV_A_ signum + 1);
839}
840
841void inline_speed
842fd_intern (int fd) 1094fd_intern (int fd)
843{ 1095{
844#ifdef _WIN32 1096#ifdef _WIN32
845 int arg = 1; 1097 unsigned long arg = 1;
846 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
847#else 1099#else
848 fcntl (fd, F_SETFD, FD_CLOEXEC); 1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
849 fcntl (fd, F_SETFL, O_NONBLOCK); 1101 fcntl (fd, F_SETFL, O_NONBLOCK);
850#endif 1102#endif
851} 1103}
852 1104
1105/*****************************************************************************/
1106
1107/*
1108 * the heap functions want a real array index. array index 0 is guaranteed to not
1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1110 * the branching factor of the d-tree.
1111 */
1112
1113/*
1114 * at the moment we allow libev the luxury of two heaps,
1115 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1116 * which is more cache-efficient.
1117 * the difference is about 5% with 50000+ watchers.
1118 */
1119#if EV_USE_4HEAP
1120
1121#define DHEAP 4
1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1124#define UPHEAP_DONE(p,k) ((p) == (k))
1125
1126/* away from the root */
1127inline_speed void
1128downheap (ANHE *heap, int N, int k)
1129{
1130 ANHE he = heap [k];
1131 ANHE *E = heap + N + HEAP0;
1132
1133 for (;;)
1134 {
1135 ev_tstamp minat;
1136 ANHE *minpos;
1137 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1138
1139 /* find minimum child */
1140 if (expect_true (pos + DHEAP - 1 < E))
1141 {
1142 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1143 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1144 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1145 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1146 }
1147 else if (pos < E)
1148 {
1149 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1150 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1151 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1152 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1153 }
1154 else
1155 break;
1156
1157 if (ANHE_at (he) <= minat)
1158 break;
1159
1160 heap [k] = *minpos;
1161 ev_active (ANHE_w (*minpos)) = k;
1162
1163 k = minpos - heap;
1164 }
1165
1166 heap [k] = he;
1167 ev_active (ANHE_w (he)) = k;
1168}
1169
1170#else /* 4HEAP */
1171
1172#define HEAP0 1
1173#define HPARENT(k) ((k) >> 1)
1174#define UPHEAP_DONE(p,k) (!(p))
1175
1176/* away from the root */
1177inline_speed void
1178downheap (ANHE *heap, int N, int k)
1179{
1180 ANHE he = heap [k];
1181
1182 for (;;)
1183 {
1184 int c = k << 1;
1185
1186 if (c >= N + HEAP0)
1187 break;
1188
1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1190 ? 1 : 0;
1191
1192 if (ANHE_at (he) <= ANHE_at (heap [c]))
1193 break;
1194
1195 heap [k] = heap [c];
1196 ev_active (ANHE_w (heap [k])) = k;
1197
1198 k = c;
1199 }
1200
1201 heap [k] = he;
1202 ev_active (ANHE_w (he)) = k;
1203}
1204#endif
1205
1206/* towards the root */
1207inline_speed void
1208upheap (ANHE *heap, int k)
1209{
1210 ANHE he = heap [k];
1211
1212 for (;;)
1213 {
1214 int p = HPARENT (k);
1215
1216 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1217 break;
1218
1219 heap [k] = heap [p];
1220 ev_active (ANHE_w (heap [k])) = k;
1221 k = p;
1222 }
1223
1224 heap [k] = he;
1225 ev_active (ANHE_w (he)) = k;
1226}
1227
1228/* move an element suitably so it is in a correct place */
1229inline_size void
1230adjustheap (ANHE *heap, int N, int k)
1231{
1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1233 upheap (heap, k);
1234 else
1235 downheap (heap, N, k);
1236}
1237
1238/* rebuild the heap: this function is used only once and executed rarely */
1239inline_size void
1240reheap (ANHE *heap, int N)
1241{
1242 int i;
1243
1244 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1245 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1246 for (i = 0; i < N; ++i)
1247 upheap (heap, i + HEAP0);
1248}
1249
1250/*****************************************************************************/
1251
1252/* associate signal watchers to a signal signal */
1253typedef struct
1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
1259 WL head;
1260} ANSIG;
1261
1262static ANSIG signals [EV_NSIG - 1];
1263
1264/*****************************************************************************/
1265
1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1267
853static void noinline 1268static void noinline
854siginit (EV_P) 1269evpipe_init (EV_P)
855{ 1270{
1271 if (!ev_is_active (&pipe_w))
1272 {
1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
1279 {
1280 evpipe [0] = -1;
1281 fd_intern (evfd); /* doing it twice doesn't hurt */
1282 ev_io_set (&pipe_w, evfd, EV_READ);
1283 }
1284 else
1285# endif
1286 {
1287 while (pipe (evpipe))
1288 ev_syserr ("(libev) error creating signal/async pipe");
1289
856 fd_intern (sigpipe [0]); 1290 fd_intern (evpipe [0]);
857 fd_intern (sigpipe [1]); 1291 fd_intern (evpipe [1]);
1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1293 }
858 1294
859 ev_io_set (&sigev, sigpipe [0], EV_READ);
860 ev_io_start (EV_A_ &sigev); 1295 ev_io_start (EV_A_ &pipe_w);
861 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1297 }
1298}
1299
1300inline_size void
1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1302{
1303 if (!*flag)
1304 {
1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1307
1308 *flag = 1;
1309
1310#if EV_USE_EVENTFD
1311 if (evfd >= 0)
1312 {
1313 uint64_t counter = 1;
1314 write (evfd, &counter, sizeof (uint64_t));
1315 }
1316 else
1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1323 write (evpipe [1], &dummy, 1);
1324
1325 errno = old_errno;
1326 }
1327}
1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
1331static void
1332pipecb (EV_P_ ev_io *iow, int revents)
1333{
1334 int i;
1335
1336#if EV_USE_EVENTFD
1337 if (evfd >= 0)
1338 {
1339 uint64_t counter;
1340 read (evfd, &counter, sizeof (uint64_t));
1341 }
1342 else
1343#endif
1344 {
1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1347 read (evpipe [0], &dummy, 1);
1348 }
1349
1350 if (sig_pending)
1351 {
1352 sig_pending = 0;
1353
1354 for (i = EV_NSIG - 1; i--; )
1355 if (expect_false (signals [i].pending))
1356 ev_feed_signal_event (EV_A_ i + 1);
1357 }
1358
1359#if EV_ASYNC_ENABLE
1360 if (async_pending)
1361 {
1362 async_pending = 0;
1363
1364 for (i = asynccnt; i--; )
1365 if (asyncs [i]->sent)
1366 {
1367 asyncs [i]->sent = 0;
1368 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1369 }
1370 }
1371#endif
862} 1372}
863 1373
864/*****************************************************************************/ 1374/*****************************************************************************/
865 1375
1376static void
1377ev_sighandler (int signum)
1378{
1379#if EV_MULTIPLICITY
1380 EV_P = signals [signum - 1].loop;
1381#endif
1382
1383#ifdef _WIN32
1384 signal (signum, ev_sighandler);
1385#endif
1386
1387 signals [signum - 1].pending = 1;
1388 evpipe_write (EV_A_ &sig_pending);
1389}
1390
1391void noinline
1392ev_feed_signal_event (EV_P_ int signum)
1393{
1394 WL w;
1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1401#if EV_MULTIPLICITY
1402 /* it is permissible to try to feed a signal to the wrong loop */
1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1404
1405 if (expect_false (signals [signum].loop != EV_A))
1406 return;
1407#endif
1408
1409 signals [signum].pending = 0;
1410
1411 for (w = signals [signum].head; w; w = w->next)
1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1413}
1414
1415#if EV_USE_SIGNALFD
1416static void
1417sigfdcb (EV_P_ ev_io *iow, int revents)
1418{
1419 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1420
1421 for (;;)
1422 {
1423 ssize_t res = read (sigfd, si, sizeof (si));
1424
1425 /* not ISO-C, as res might be -1, but works with SuS */
1426 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1427 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1428
1429 if (res < (ssize_t)sizeof (si))
1430 break;
1431 }
1432}
1433#endif
1434
1435#endif
1436
1437/*****************************************************************************/
1438
1439#if EV_CHILD_ENABLE
866static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
867 1441
868#ifndef _WIN32
869
870static ev_signal childev; 1442static ev_signal childev;
871 1443
872void inline_speed 1444#ifndef WIFCONTINUED
1445# define WIFCONTINUED(status) 0
1446#endif
1447
1448/* handle a single child status event */
1449inline_speed void
873child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
874{ 1451{
875 ev_child *w; 1452 ev_child *w;
1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
876 1454
877 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1455 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1456 {
878 if (w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1458 && (!traced || (w->flags & 1)))
879 { 1459 {
880 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1460 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
881 w->rpid = pid; 1461 w->rpid = pid;
882 w->rstatus = status; 1462 w->rstatus = status;
883 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1463 ev_feed_event (EV_A_ (W)w, EV_CHILD);
884 } 1464 }
1465 }
885} 1466}
886 1467
887#ifndef WCONTINUED 1468#ifndef WCONTINUED
888# define WCONTINUED 0 1469# define WCONTINUED 0
889#endif 1470#endif
890 1471
1472/* called on sigchld etc., calls waitpid */
891static void 1473static void
892childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
893{ 1475{
894 int pid, status; 1476 int pid, status;
895 1477
… …
898 if (!WCONTINUED 1480 if (!WCONTINUED
899 || errno != EINVAL 1481 || errno != EINVAL
900 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1482 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
901 return; 1483 return;
902 1484
903 /* make sure we are called again until all childs have been reaped */ 1485 /* make sure we are called again until all children have been reaped */
904 /* we need to do it this way so that the callback gets called before we continue */ 1486 /* we need to do it this way so that the callback gets called before we continue */
905 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
906 1488
907 child_reap (EV_A_ sw, pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
908 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
909 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1491 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
910} 1492}
911 1493
912#endif 1494#endif
913 1495
914/*****************************************************************************/ 1496/*****************************************************************************/
915 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
916#if EV_USE_PORT 1501#if EV_USE_PORT
917# include "ev_port.c" 1502# include "ev_port.c"
918#endif 1503#endif
919#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
920# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
976 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
977 /* it usually doesn't work correctly on anything but sockets and pipes */ 1562 /* it usually doesn't work correctly on anything but sockets and pipes */
978 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
979#endif 1564#endif
980#ifdef __APPLE__ 1565#ifdef __APPLE__
981 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
982 flags &= ~EVBACKEND_POLL; 1567 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1568 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1569#endif
1570#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
983#endif 1572#endif
984 1573
985 return flags; 1574 return flags;
986} 1575}
987 1576
… …
989ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
990{ 1579{
991 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
992 1581
993 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
994 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
995 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
996 1585
997 return flags; 1586 return flags;
998} 1587}
999 1588
1000unsigned int 1589unsigned int
1001ev_backend (EV_P) 1590ev_backend (EV_P)
1002{ 1591{
1003 return backend; 1592 return backend;
1004} 1593}
1005 1594
1595#if EV_FEATURE_API
1006unsigned int 1596unsigned int
1007ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1008{ 1598{
1009 return loop_count; 1599 return loop_count;
1600}
1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1010} 1606}
1011 1607
1012void 1608void
1013ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1014{ 1610{
… …
1019ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1020{ 1616{
1021 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1022} 1618}
1023 1619
1620void
1621ev_set_userdata (EV_P_ void *data)
1622{
1623 userdata = data;
1624}
1625
1626void *
1627ev_userdata (EV_P)
1628{
1629 return userdata;
1630}
1631
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1633{
1634 invoke_cb = invoke_pending_cb;
1635}
1636
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1638{
1639 release_cb = release;
1640 acquire_cb = acquire;
1641}
1642#endif
1643
1644/* initialise a loop structure, must be zero-initialised */
1024static void noinline 1645static void noinline
1025loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1026{ 1647{
1027 if (!backend) 1648 if (!backend)
1028 { 1649 {
1650#if EV_USE_REALTIME
1651 if (!have_realtime)
1652 {
1653 struct timespec ts;
1654
1655 if (!clock_gettime (CLOCK_REALTIME, &ts))
1656 have_realtime = 1;
1657 }
1658#endif
1659
1029#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1030 { 1662 {
1031 struct timespec ts; 1663 struct timespec ts;
1664
1032 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1033 have_monotonic = 1; 1666 have_monotonic = 1;
1034 } 1667 }
1035#endif 1668#endif
1036
1037 ev_rt_now = ev_time ();
1038 mn_now = get_clock ();
1039 now_floor = mn_now;
1040 rtmn_diff = ev_rt_now - mn_now;
1041
1042 io_blocktime = 0.;
1043 timeout_blocktime = 0.;
1044 1669
1045 /* pid check not overridable via env */ 1670 /* pid check not overridable via env */
1046#ifndef _WIN32 1671#ifndef _WIN32
1047 if (flags & EVFLAG_FORKCHECK) 1672 if (flags & EVFLAG_FORKCHECK)
1048 curpid = getpid (); 1673 curpid = getpid ();
… …
1051 if (!(flags & EVFLAG_NOENV) 1676 if (!(flags & EVFLAG_NOENV)
1052 && !enable_secure () 1677 && !enable_secure ()
1053 && getenv ("LIBEV_FLAGS")) 1678 && getenv ("LIBEV_FLAGS"))
1054 flags = atoi (getenv ("LIBEV_FLAGS")); 1679 flags = atoi (getenv ("LIBEV_FLAGS"));
1055 1680
1681 ev_rt_now = ev_time ();
1682 mn_now = get_clock ();
1683 now_floor = mn_now;
1684 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending;
1687#endif
1688
1689 io_blocktime = 0.;
1690 timeout_blocktime = 0.;
1691 backend = 0;
1692 backend_fd = -1;
1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1697#if EV_USE_INOTIFY
1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1699#endif
1700#if EV_USE_SIGNALFD
1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1702#endif
1703
1056 if (!(flags & 0x0000ffffUL)) 1704 if (!(flags & 0x0000ffffU))
1057 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1058 1706
1059 backend = 0;
1060 backend_fd = -1;
1061#if EV_USE_INOTIFY 1707#if EV_USE_IOCP
1062 fs_fd = -2; 1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1063#endif 1709#endif
1064
1065#if EV_USE_PORT 1710#if EV_USE_PORT
1066 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1067#endif 1712#endif
1068#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1069 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1076#endif 1721#endif
1077#if EV_USE_SELECT 1722#if EV_USE_SELECT
1078 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1079#endif 1724#endif
1080 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1081 ev_init (&sigev, sigcb); 1729 ev_init (&pipe_w, pipecb);
1082 ev_set_priority (&sigev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1083 } 1732 }
1084} 1733}
1085 1734
1086static void noinline 1735/* free up a loop structure */
1736void
1087loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
1088{ 1738{
1089 int i; 1739 int i;
1740
1741#if EV_CHILD_ENABLE
1742 if (ev_is_active (&childev))
1743 {
1744 ev_ref (EV_A); /* child watcher */
1745 ev_signal_stop (EV_A_ &childev);
1746 }
1747#endif
1748
1749 if (ev_is_active (&pipe_w))
1750 {
1751 /*ev_ref (EV_A);*/
1752 /*ev_io_stop (EV_A_ &pipe_w);*/
1753
1754#if EV_USE_EVENTFD
1755 if (evfd >= 0)
1756 close (evfd);
1757#endif
1758
1759 if (evpipe [0] >= 0)
1760 {
1761 EV_WIN32_CLOSE_FD (evpipe [0]);
1762 EV_WIN32_CLOSE_FD (evpipe [1]);
1763 }
1764 }
1765
1766#if EV_USE_SIGNALFD
1767 if (ev_is_active (&sigfd_w))
1768 close (sigfd);
1769#endif
1090 1770
1091#if EV_USE_INOTIFY 1771#if EV_USE_INOTIFY
1092 if (fs_fd >= 0) 1772 if (fs_fd >= 0)
1093 close (fs_fd); 1773 close (fs_fd);
1094#endif 1774#endif
1095 1775
1096 if (backend_fd >= 0) 1776 if (backend_fd >= 0)
1097 close (backend_fd); 1777 close (backend_fd);
1098 1778
1779#if EV_USE_IOCP
1780 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1781#endif
1099#if EV_USE_PORT 1782#if EV_USE_PORT
1100 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1783 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1101#endif 1784#endif
1102#if EV_USE_KQUEUE 1785#if EV_USE_KQUEUE
1103 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1786 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1118#if EV_IDLE_ENABLE 1801#if EV_IDLE_ENABLE
1119 array_free (idle, [i]); 1802 array_free (idle, [i]);
1120#endif 1803#endif
1121 } 1804 }
1122 1805
1123 ev_free (anfds); anfdmax = 0; 1806 ev_free (anfds); anfds = 0; anfdmax = 0;
1124 1807
1125 /* have to use the microsoft-never-gets-it-right macro */ 1808 /* have to use the microsoft-never-gets-it-right macro */
1809 array_free (rfeed, EMPTY);
1126 array_free (fdchange, EMPTY); 1810 array_free (fdchange, EMPTY);
1127 array_free (timer, EMPTY); 1811 array_free (timer, EMPTY);
1128#if EV_PERIODIC_ENABLE 1812#if EV_PERIODIC_ENABLE
1129 array_free (periodic, EMPTY); 1813 array_free (periodic, EMPTY);
1130#endif 1814#endif
1131#if EV_FORK_ENABLE 1815#if EV_FORK_ENABLE
1132 array_free (fork, EMPTY); 1816 array_free (fork, EMPTY);
1133#endif 1817#endif
1134 array_free (prepare, EMPTY); 1818 array_free (prepare, EMPTY);
1135 array_free (check, EMPTY); 1819 array_free (check, EMPTY);
1820#if EV_ASYNC_ENABLE
1821 array_free (async, EMPTY);
1822#endif
1136 1823
1137 backend = 0; 1824 backend = 0;
1138}
1139 1825
1826#if EV_MULTIPLICITY
1827 if (ev_is_default_loop (EV_A))
1828#endif
1829 ev_default_loop_ptr = 0;
1830#if EV_MULTIPLICITY
1831 else
1832 ev_free (EV_A);
1833#endif
1834}
1835
1836#if EV_USE_INOTIFY
1140void inline_size infy_fork (EV_P); 1837inline_size void infy_fork (EV_P);
1838#endif
1141 1839
1142void inline_size 1840inline_size void
1143loop_fork (EV_P) 1841loop_fork (EV_P)
1144{ 1842{
1145#if EV_USE_PORT 1843#if EV_USE_PORT
1146 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1844 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1147#endif 1845#endif
… …
1153#endif 1851#endif
1154#if EV_USE_INOTIFY 1852#if EV_USE_INOTIFY
1155 infy_fork (EV_A); 1853 infy_fork (EV_A);
1156#endif 1854#endif
1157 1855
1158 if (ev_is_active (&sigev)) 1856 if (ev_is_active (&pipe_w))
1159 { 1857 {
1160 /* default loop */ 1858 /* this "locks" the handlers against writing to the pipe */
1859 /* while we modify the fd vars */
1860 sig_pending = 1;
1861#if EV_ASYNC_ENABLE
1862 async_pending = 1;
1863#endif
1161 1864
1162 ev_ref (EV_A); 1865 ev_ref (EV_A);
1163 ev_io_stop (EV_A_ &sigev); 1866 ev_io_stop (EV_A_ &pipe_w);
1164 close (sigpipe [0]);
1165 close (sigpipe [1]);
1166 1867
1167 while (pipe (sigpipe)) 1868#if EV_USE_EVENTFD
1168 syserr ("(libev) error creating pipe"); 1869 if (evfd >= 0)
1870 close (evfd);
1871#endif
1169 1872
1873 if (evpipe [0] >= 0)
1874 {
1875 EV_WIN32_CLOSE_FD (evpipe [0]);
1876 EV_WIN32_CLOSE_FD (evpipe [1]);
1877 }
1878
1879#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1170 siginit (EV_A); 1880 evpipe_init (EV_A);
1881 /* now iterate over everything, in case we missed something */
1882 pipecb (EV_A_ &pipe_w, EV_READ);
1883#endif
1171 } 1884 }
1172 1885
1173 postfork = 0; 1886 postfork = 0;
1174} 1887}
1888
1889#if EV_MULTIPLICITY
1890
1891struct ev_loop *
1892ev_loop_new (unsigned int flags)
1893{
1894 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1895
1896 memset (EV_A, 0, sizeof (struct ev_loop));
1897 loop_init (EV_A_ flags);
1898
1899 if (ev_backend (EV_A))
1900 return EV_A;
1901
1902 ev_free (EV_A);
1903 return 0;
1904}
1905
1906#endif /* multiplicity */
1907
1908#if EV_VERIFY
1909static void noinline
1910verify_watcher (EV_P_ W w)
1911{
1912 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1913
1914 if (w->pending)
1915 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1916}
1917
1918static void noinline
1919verify_heap (EV_P_ ANHE *heap, int N)
1920{
1921 int i;
1922
1923 for (i = HEAP0; i < N + HEAP0; ++i)
1924 {
1925 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1926 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1927 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1928
1929 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1930 }
1931}
1932
1933static void noinline
1934array_verify (EV_P_ W *ws, int cnt)
1935{
1936 while (cnt--)
1937 {
1938 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1939 verify_watcher (EV_A_ ws [cnt]);
1940 }
1941}
1942#endif
1943
1944#if EV_FEATURE_API
1945void
1946ev_verify (EV_P)
1947{
1948#if EV_VERIFY
1949 int i;
1950 WL w;
1951
1952 assert (activecnt >= -1);
1953
1954 assert (fdchangemax >= fdchangecnt);
1955 for (i = 0; i < fdchangecnt; ++i)
1956 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1957
1958 assert (anfdmax >= 0);
1959 for (i = 0; i < anfdmax; ++i)
1960 for (w = anfds [i].head; w; w = w->next)
1961 {
1962 verify_watcher (EV_A_ (W)w);
1963 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1964 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1965 }
1966
1967 assert (timermax >= timercnt);
1968 verify_heap (EV_A_ timers, timercnt);
1969
1970#if EV_PERIODIC_ENABLE
1971 assert (periodicmax >= periodiccnt);
1972 verify_heap (EV_A_ periodics, periodiccnt);
1973#endif
1974
1975 for (i = NUMPRI; i--; )
1976 {
1977 assert (pendingmax [i] >= pendingcnt [i]);
1978#if EV_IDLE_ENABLE
1979 assert (idleall >= 0);
1980 assert (idlemax [i] >= idlecnt [i]);
1981 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1982#endif
1983 }
1984
1985#if EV_FORK_ENABLE
1986 assert (forkmax >= forkcnt);
1987 array_verify (EV_A_ (W *)forks, forkcnt);
1988#endif
1989
1990#if EV_ASYNC_ENABLE
1991 assert (asyncmax >= asynccnt);
1992 array_verify (EV_A_ (W *)asyncs, asynccnt);
1993#endif
1994
1995#if EV_PREPARE_ENABLE
1996 assert (preparemax >= preparecnt);
1997 array_verify (EV_A_ (W *)prepares, preparecnt);
1998#endif
1999
2000#if EV_CHECK_ENABLE
2001 assert (checkmax >= checkcnt);
2002 array_verify (EV_A_ (W *)checks, checkcnt);
2003#endif
2004
2005# if 0
2006#if EV_CHILD_ENABLE
2007 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2008 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2009#endif
2010# endif
2011#endif
2012}
2013#endif
1175 2014
1176#if EV_MULTIPLICITY 2015#if EV_MULTIPLICITY
1177struct ev_loop * 2016struct ev_loop *
1178ev_loop_new (unsigned int flags)
1179{
1180 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1181
1182 memset (loop, 0, sizeof (struct ev_loop));
1183
1184 loop_init (EV_A_ flags);
1185
1186 if (ev_backend (EV_A))
1187 return loop;
1188
1189 return 0;
1190}
1191
1192void
1193ev_loop_destroy (EV_P)
1194{
1195 loop_destroy (EV_A);
1196 ev_free (loop);
1197}
1198
1199void
1200ev_loop_fork (EV_P)
1201{
1202 postfork = 1;
1203}
1204
1205#endif
1206
1207#if EV_MULTIPLICITY
1208struct ev_loop *
1209ev_default_loop_init (unsigned int flags)
1210#else 2017#else
1211int 2018int
2019#endif
1212ev_default_loop (unsigned int flags) 2020ev_default_loop (unsigned int flags)
1213#endif
1214{ 2021{
1215 if (sigpipe [0] == sigpipe [1])
1216 if (pipe (sigpipe))
1217 return 0;
1218
1219 if (!ev_default_loop_ptr) 2022 if (!ev_default_loop_ptr)
1220 { 2023 {
1221#if EV_MULTIPLICITY 2024#if EV_MULTIPLICITY
1222 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2025 EV_P = ev_default_loop_ptr = &default_loop_struct;
1223#else 2026#else
1224 ev_default_loop_ptr = 1; 2027 ev_default_loop_ptr = 1;
1225#endif 2028#endif
1226 2029
1227 loop_init (EV_A_ flags); 2030 loop_init (EV_A_ flags);
1228 2031
1229 if (ev_backend (EV_A)) 2032 if (ev_backend (EV_A))
1230 { 2033 {
1231 siginit (EV_A); 2034#if EV_CHILD_ENABLE
1232
1233#ifndef _WIN32
1234 ev_signal_init (&childev, childcb, SIGCHLD); 2035 ev_signal_init (&childev, childcb, SIGCHLD);
1235 ev_set_priority (&childev, EV_MAXPRI); 2036 ev_set_priority (&childev, EV_MAXPRI);
1236 ev_signal_start (EV_A_ &childev); 2037 ev_signal_start (EV_A_ &childev);
1237 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2038 ev_unref (EV_A); /* child watcher should not keep loop alive */
1238#endif 2039#endif
… …
1243 2044
1244 return ev_default_loop_ptr; 2045 return ev_default_loop_ptr;
1245} 2046}
1246 2047
1247void 2048void
1248ev_default_destroy (void) 2049ev_loop_fork (EV_P)
1249{ 2050{
1250#if EV_MULTIPLICITY 2051 postfork = 1; /* must be in line with ev_default_fork */
1251 struct ev_loop *loop = ev_default_loop_ptr;
1252#endif
1253
1254#ifndef _WIN32
1255 ev_ref (EV_A); /* child watcher */
1256 ev_signal_stop (EV_A_ &childev);
1257#endif
1258
1259 ev_ref (EV_A); /* signal watcher */
1260 ev_io_stop (EV_A_ &sigev);
1261
1262 close (sigpipe [0]); sigpipe [0] = 0;
1263 close (sigpipe [1]); sigpipe [1] = 0;
1264
1265 loop_destroy (EV_A);
1266}
1267
1268void
1269ev_default_fork (void)
1270{
1271#if EV_MULTIPLICITY
1272 struct ev_loop *loop = ev_default_loop_ptr;
1273#endif
1274
1275 if (backend)
1276 postfork = 1;
1277} 2052}
1278 2053
1279/*****************************************************************************/ 2054/*****************************************************************************/
1280 2055
1281void 2056void
1282ev_invoke (EV_P_ void *w, int revents) 2057ev_invoke (EV_P_ void *w, int revents)
1283{ 2058{
1284 EV_CB_INVOKE ((W)w, revents); 2059 EV_CB_INVOKE ((W)w, revents);
1285} 2060}
1286 2061
1287void inline_speed 2062unsigned int
1288call_pending (EV_P) 2063ev_pending_count (EV_P)
2064{
2065 int pri;
2066 unsigned int count = 0;
2067
2068 for (pri = NUMPRI; pri--; )
2069 count += pendingcnt [pri];
2070
2071 return count;
2072}
2073
2074void noinline
2075ev_invoke_pending (EV_P)
1289{ 2076{
1290 int pri; 2077 int pri;
1291 2078
1292 for (pri = NUMPRI; pri--; ) 2079 for (pri = NUMPRI; pri--; )
1293 while (pendingcnt [pri]) 2080 while (pendingcnt [pri])
1294 { 2081 {
1295 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2082 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1296 2083
1297 if (expect_true (p->w))
1298 {
1299 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2084 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2085 /* ^ this is no longer true, as pending_w could be here */
1300 2086
1301 p->w->pending = 0; 2087 p->w->pending = 0;
1302 EV_CB_INVOKE (p->w, p->events); 2088 EV_CB_INVOKE (p->w, p->events);
1303 } 2089 EV_FREQUENT_CHECK;
1304 } 2090 }
1305} 2091}
1306 2092
1307void inline_size
1308timers_reify (EV_P)
1309{
1310 while (timercnt && ((WT)timers [0])->at <= mn_now)
1311 {
1312 ev_timer *w = (ev_timer *)timers [0];
1313
1314 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1315
1316 /* first reschedule or stop timer */
1317 if (w->repeat)
1318 {
1319 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1320
1321 ((WT)w)->at += w->repeat;
1322 if (((WT)w)->at < mn_now)
1323 ((WT)w)->at = mn_now;
1324
1325 downheap (timers, timercnt, 0);
1326 }
1327 else
1328 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1329
1330 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1331 }
1332}
1333
1334#if EV_PERIODIC_ENABLE
1335void inline_size
1336periodics_reify (EV_P)
1337{
1338 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1339 {
1340 ev_periodic *w = (ev_periodic *)periodics [0];
1341
1342 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1343
1344 /* first reschedule or stop timer */
1345 if (w->reschedule_cb)
1346 {
1347 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1348 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1349 downheap (periodics, periodiccnt, 0);
1350 }
1351 else if (w->interval)
1352 {
1353 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1354 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1355 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1356 downheap (periodics, periodiccnt, 0);
1357 }
1358 else
1359 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1360
1361 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1362 }
1363}
1364
1365static void noinline
1366periodics_reschedule (EV_P)
1367{
1368 int i;
1369
1370 /* adjust periodics after time jump */
1371 for (i = 0; i < periodiccnt; ++i)
1372 {
1373 ev_periodic *w = (ev_periodic *)periodics [i];
1374
1375 if (w->reschedule_cb)
1376 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1377 else if (w->interval)
1378 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1379 }
1380
1381 /* now rebuild the heap */
1382 for (i = periodiccnt >> 1; i--; )
1383 downheap (periodics, periodiccnt, i);
1384}
1385#endif
1386
1387#if EV_IDLE_ENABLE 2093#if EV_IDLE_ENABLE
1388void inline_size 2094/* make idle watchers pending. this handles the "call-idle */
2095/* only when higher priorities are idle" logic */
2096inline_size void
1389idle_reify (EV_P) 2097idle_reify (EV_P)
1390{ 2098{
1391 if (expect_false (idleall)) 2099 if (expect_false (idleall))
1392 { 2100 {
1393 int pri; 2101 int pri;
… …
1405 } 2113 }
1406 } 2114 }
1407} 2115}
1408#endif 2116#endif
1409 2117
1410void inline_speed 2118/* make timers pending */
2119inline_size void
2120timers_reify (EV_P)
2121{
2122 EV_FREQUENT_CHECK;
2123
2124 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2125 {
2126 do
2127 {
2128 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2129
2130 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2131
2132 /* first reschedule or stop timer */
2133 if (w->repeat)
2134 {
2135 ev_at (w) += w->repeat;
2136 if (ev_at (w) < mn_now)
2137 ev_at (w) = mn_now;
2138
2139 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2140
2141 ANHE_at_cache (timers [HEAP0]);
2142 downheap (timers, timercnt, HEAP0);
2143 }
2144 else
2145 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2146
2147 EV_FREQUENT_CHECK;
2148 feed_reverse (EV_A_ (W)w);
2149 }
2150 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2151
2152 feed_reverse_done (EV_A_ EV_TIMER);
2153 }
2154}
2155
2156#if EV_PERIODIC_ENABLE
2157/* make periodics pending */
2158inline_size void
2159periodics_reify (EV_P)
2160{
2161 EV_FREQUENT_CHECK;
2162
2163 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2164 {
2165 int feed_count = 0;
2166
2167 do
2168 {
2169 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2170
2171 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2172
2173 /* first reschedule or stop timer */
2174 if (w->reschedule_cb)
2175 {
2176 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2177
2178 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2179
2180 ANHE_at_cache (periodics [HEAP0]);
2181 downheap (periodics, periodiccnt, HEAP0);
2182 }
2183 else if (w->interval)
2184 {
2185 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2186 /* if next trigger time is not sufficiently in the future, put it there */
2187 /* this might happen because of floating point inexactness */
2188 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2189 {
2190 ev_at (w) += w->interval;
2191
2192 /* if interval is unreasonably low we might still have a time in the past */
2193 /* so correct this. this will make the periodic very inexact, but the user */
2194 /* has effectively asked to get triggered more often than possible */
2195 if (ev_at (w) < ev_rt_now)
2196 ev_at (w) = ev_rt_now;
2197 }
2198
2199 ANHE_at_cache (periodics [HEAP0]);
2200 downheap (periodics, periodiccnt, HEAP0);
2201 }
2202 else
2203 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2204
2205 EV_FREQUENT_CHECK;
2206 feed_reverse (EV_A_ (W)w);
2207 }
2208 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2209
2210 feed_reverse_done (EV_A_ EV_PERIODIC);
2211 }
2212}
2213
2214/* simply recalculate all periodics */
2215/* TODO: maybe ensure that at least one event happens when jumping forward? */
2216static void noinline
2217periodics_reschedule (EV_P)
2218{
2219 int i;
2220
2221 /* adjust periodics after time jump */
2222 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2223 {
2224 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2225
2226 if (w->reschedule_cb)
2227 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2228 else if (w->interval)
2229 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2230
2231 ANHE_at_cache (periodics [i]);
2232 }
2233
2234 reheap (periodics, periodiccnt);
2235}
2236#endif
2237
2238/* adjust all timers by a given offset */
2239static void noinline
2240timers_reschedule (EV_P_ ev_tstamp adjust)
2241{
2242 int i;
2243
2244 for (i = 0; i < timercnt; ++i)
2245 {
2246 ANHE *he = timers + i + HEAP0;
2247 ANHE_w (*he)->at += adjust;
2248 ANHE_at_cache (*he);
2249 }
2250}
2251
2252/* fetch new monotonic and realtime times from the kernel */
2253/* also detect if there was a timejump, and act accordingly */
2254inline_speed void
1411time_update (EV_P_ ev_tstamp max_block) 2255time_update (EV_P_ ev_tstamp max_block)
1412{ 2256{
1413 int i;
1414
1415#if EV_USE_MONOTONIC 2257#if EV_USE_MONOTONIC
1416 if (expect_true (have_monotonic)) 2258 if (expect_true (have_monotonic))
1417 { 2259 {
2260 int i;
1418 ev_tstamp odiff = rtmn_diff; 2261 ev_tstamp odiff = rtmn_diff;
1419 2262
1420 mn_now = get_clock (); 2263 mn_now = get_clock ();
1421 2264
1422 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2265 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1440 */ 2283 */
1441 for (i = 4; --i; ) 2284 for (i = 4; --i; )
1442 { 2285 {
1443 rtmn_diff = ev_rt_now - mn_now; 2286 rtmn_diff = ev_rt_now - mn_now;
1444 2287
1445 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2288 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1446 return; /* all is well */ 2289 return; /* all is well */
1447 2290
1448 ev_rt_now = ev_time (); 2291 ev_rt_now = ev_time ();
1449 mn_now = get_clock (); 2292 mn_now = get_clock ();
1450 now_floor = mn_now; 2293 now_floor = mn_now;
1451 } 2294 }
1452 2295
2296 /* no timer adjustment, as the monotonic clock doesn't jump */
2297 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1453# if EV_PERIODIC_ENABLE 2298# if EV_PERIODIC_ENABLE
1454 periodics_reschedule (EV_A); 2299 periodics_reschedule (EV_A);
1455# endif 2300# endif
1456 /* no timer adjustment, as the monotonic clock doesn't jump */
1457 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1458 } 2301 }
1459 else 2302 else
1460#endif 2303#endif
1461 { 2304 {
1462 ev_rt_now = ev_time (); 2305 ev_rt_now = ev_time ();
1463 2306
1464 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2307 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1465 { 2308 {
2309 /* adjust timers. this is easy, as the offset is the same for all of them */
2310 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1466#if EV_PERIODIC_ENABLE 2311#if EV_PERIODIC_ENABLE
1467 periodics_reschedule (EV_A); 2312 periodics_reschedule (EV_A);
1468#endif 2313#endif
1469 /* adjust timers. this is easy, as the offset is the same for all of them */
1470 for (i = 0; i < timercnt; ++i)
1471 ((WT)timers [i])->at += ev_rt_now - mn_now;
1472 } 2314 }
1473 2315
1474 mn_now = ev_rt_now; 2316 mn_now = ev_rt_now;
1475 } 2317 }
1476} 2318}
1477 2319
1478void 2320void
1479ev_ref (EV_P)
1480{
1481 ++activecnt;
1482}
1483
1484void
1485ev_unref (EV_P)
1486{
1487 --activecnt;
1488}
1489
1490static int loop_done;
1491
1492void
1493ev_loop (EV_P_ int flags) 2321ev_run (EV_P_ int flags)
1494{ 2322{
1495 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2323#if EV_FEATURE_API
1496 ? EVUNLOOP_ONE 2324 ++loop_depth;
1497 : EVUNLOOP_CANCEL; 2325#endif
1498 2326
2327 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2328
2329 loop_done = EVBREAK_CANCEL;
2330
1499 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2331 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1500 2332
1501 do 2333 do
1502 { 2334 {
2335#if EV_VERIFY >= 2
2336 ev_verify (EV_A);
2337#endif
2338
1503#ifndef _WIN32 2339#ifndef _WIN32
1504 if (expect_false (curpid)) /* penalise the forking check even more */ 2340 if (expect_false (curpid)) /* penalise the forking check even more */
1505 if (expect_false (getpid () != curpid)) 2341 if (expect_false (getpid () != curpid))
1506 { 2342 {
1507 curpid = getpid (); 2343 curpid = getpid ();
… …
1513 /* we might have forked, so queue fork handlers */ 2349 /* we might have forked, so queue fork handlers */
1514 if (expect_false (postfork)) 2350 if (expect_false (postfork))
1515 if (forkcnt) 2351 if (forkcnt)
1516 { 2352 {
1517 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2353 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1518 call_pending (EV_A); 2354 EV_INVOKE_PENDING;
1519 } 2355 }
1520#endif 2356#endif
1521 2357
2358#if EV_PREPARE_ENABLE
1522 /* queue prepare watchers (and execute them) */ 2359 /* queue prepare watchers (and execute them) */
1523 if (expect_false (preparecnt)) 2360 if (expect_false (preparecnt))
1524 { 2361 {
1525 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2362 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1526 call_pending (EV_A); 2363 EV_INVOKE_PENDING;
1527 } 2364 }
2365#endif
1528 2366
1529 if (expect_false (!activecnt)) 2367 if (expect_false (loop_done))
1530 break; 2368 break;
1531 2369
1532 /* we might have forked, so reify kernel state if necessary */ 2370 /* we might have forked, so reify kernel state if necessary */
1533 if (expect_false (postfork)) 2371 if (expect_false (postfork))
1534 loop_fork (EV_A); 2372 loop_fork (EV_A);
… …
1539 /* calculate blocking time */ 2377 /* calculate blocking time */
1540 { 2378 {
1541 ev_tstamp waittime = 0.; 2379 ev_tstamp waittime = 0.;
1542 ev_tstamp sleeptime = 0.; 2380 ev_tstamp sleeptime = 0.;
1543 2381
2382 /* remember old timestamp for io_blocktime calculation */
2383 ev_tstamp prev_mn_now = mn_now;
2384
2385 /* update time to cancel out callback processing overhead */
2386 time_update (EV_A_ 1e100);
2387
1544 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2388 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1545 { 2389 {
1546 /* update time to cancel out callback processing overhead */
1547 time_update (EV_A_ 1e100);
1548
1549 waittime = MAX_BLOCKTIME; 2390 waittime = MAX_BLOCKTIME;
1550 2391
1551 if (timercnt) 2392 if (timercnt)
1552 { 2393 {
1553 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2394 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1554 if (waittime > to) waittime = to; 2395 if (waittime > to) waittime = to;
1555 } 2396 }
1556 2397
1557#if EV_PERIODIC_ENABLE 2398#if EV_PERIODIC_ENABLE
1558 if (periodiccnt) 2399 if (periodiccnt)
1559 { 2400 {
1560 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2401 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1561 if (waittime > to) waittime = to; 2402 if (waittime > to) waittime = to;
1562 } 2403 }
1563#endif 2404#endif
1564 2405
2406 /* don't let timeouts decrease the waittime below timeout_blocktime */
1565 if (expect_false (waittime < timeout_blocktime)) 2407 if (expect_false (waittime < timeout_blocktime))
1566 waittime = timeout_blocktime; 2408 waittime = timeout_blocktime;
1567 2409
1568 sleeptime = waittime - backend_fudge; 2410 /* extra check because io_blocktime is commonly 0 */
1569
1570 if (expect_true (sleeptime > io_blocktime)) 2411 if (expect_false (io_blocktime))
1571 sleeptime = io_blocktime;
1572
1573 if (sleeptime)
1574 { 2412 {
2413 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2414
2415 if (sleeptime > waittime - backend_fudge)
2416 sleeptime = waittime - backend_fudge;
2417
2418 if (expect_true (sleeptime > 0.))
2419 {
1575 ev_sleep (sleeptime); 2420 ev_sleep (sleeptime);
1576 waittime -= sleeptime; 2421 waittime -= sleeptime;
2422 }
1577 } 2423 }
1578 } 2424 }
1579 2425
2426#if EV_FEATURE_API
1580 ++loop_count; 2427 ++loop_count;
2428#endif
2429 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1581 backend_poll (EV_A_ waittime); 2430 backend_poll (EV_A_ waittime);
2431 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1582 2432
1583 /* update ev_rt_now, do magic */ 2433 /* update ev_rt_now, do magic */
1584 time_update (EV_A_ waittime + sleeptime); 2434 time_update (EV_A_ waittime + sleeptime);
1585 } 2435 }
1586 2436
… …
1593#if EV_IDLE_ENABLE 2443#if EV_IDLE_ENABLE
1594 /* queue idle watchers unless other events are pending */ 2444 /* queue idle watchers unless other events are pending */
1595 idle_reify (EV_A); 2445 idle_reify (EV_A);
1596#endif 2446#endif
1597 2447
2448#if EV_CHECK_ENABLE
1598 /* queue check watchers, to be executed first */ 2449 /* queue check watchers, to be executed first */
1599 if (expect_false (checkcnt)) 2450 if (expect_false (checkcnt))
1600 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2451 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2452#endif
1601 2453
1602 call_pending (EV_A); 2454 EV_INVOKE_PENDING;
1603
1604 } 2455 }
1605 while (expect_true (activecnt && !loop_done)); 2456 while (expect_true (
2457 activecnt
2458 && !loop_done
2459 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2460 ));
1606 2461
1607 if (loop_done == EVUNLOOP_ONE) 2462 if (loop_done == EVBREAK_ONE)
1608 loop_done = EVUNLOOP_CANCEL; 2463 loop_done = EVBREAK_CANCEL;
2464
2465#if EV_FEATURE_API
2466 --loop_depth;
2467#endif
1609} 2468}
1610 2469
1611void 2470void
1612ev_unloop (EV_P_ int how) 2471ev_break (EV_P_ int how)
1613{ 2472{
1614 loop_done = how; 2473 loop_done = how;
1615} 2474}
1616 2475
2476void
2477ev_ref (EV_P)
2478{
2479 ++activecnt;
2480}
2481
2482void
2483ev_unref (EV_P)
2484{
2485 --activecnt;
2486}
2487
2488void
2489ev_now_update (EV_P)
2490{
2491 time_update (EV_A_ 1e100);
2492}
2493
2494void
2495ev_suspend (EV_P)
2496{
2497 ev_now_update (EV_A);
2498}
2499
2500void
2501ev_resume (EV_P)
2502{
2503 ev_tstamp mn_prev = mn_now;
2504
2505 ev_now_update (EV_A);
2506 timers_reschedule (EV_A_ mn_now - mn_prev);
2507#if EV_PERIODIC_ENABLE
2508 /* TODO: really do this? */
2509 periodics_reschedule (EV_A);
2510#endif
2511}
2512
1617/*****************************************************************************/ 2513/*****************************************************************************/
2514/* singly-linked list management, used when the expected list length is short */
1618 2515
1619void inline_size 2516inline_size void
1620wlist_add (WL *head, WL elem) 2517wlist_add (WL *head, WL elem)
1621{ 2518{
1622 elem->next = *head; 2519 elem->next = *head;
1623 *head = elem; 2520 *head = elem;
1624} 2521}
1625 2522
1626void inline_size 2523inline_size void
1627wlist_del (WL *head, WL elem) 2524wlist_del (WL *head, WL elem)
1628{ 2525{
1629 while (*head) 2526 while (*head)
1630 { 2527 {
1631 if (*head == elem) 2528 if (expect_true (*head == elem))
1632 { 2529 {
1633 *head = elem->next; 2530 *head = elem->next;
1634 return; 2531 break;
1635 } 2532 }
1636 2533
1637 head = &(*head)->next; 2534 head = &(*head)->next;
1638 } 2535 }
1639} 2536}
1640 2537
1641void inline_speed 2538/* internal, faster, version of ev_clear_pending */
2539inline_speed void
1642clear_pending (EV_P_ W w) 2540clear_pending (EV_P_ W w)
1643{ 2541{
1644 if (w->pending) 2542 if (w->pending)
1645 { 2543 {
1646 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2544 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1647 w->pending = 0; 2545 w->pending = 0;
1648 } 2546 }
1649} 2547}
1650 2548
1651int 2549int
… …
1655 int pending = w_->pending; 2553 int pending = w_->pending;
1656 2554
1657 if (expect_true (pending)) 2555 if (expect_true (pending))
1658 { 2556 {
1659 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2557 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2558 p->w = (W)&pending_w;
1660 w_->pending = 0; 2559 w_->pending = 0;
1661 p->w = 0;
1662 return p->events; 2560 return p->events;
1663 } 2561 }
1664 else 2562 else
1665 return 0; 2563 return 0;
1666} 2564}
1667 2565
1668void inline_size 2566inline_size void
1669pri_adjust (EV_P_ W w) 2567pri_adjust (EV_P_ W w)
1670{ 2568{
1671 int pri = w->priority; 2569 int pri = ev_priority (w);
1672 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2570 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1673 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2571 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1674 w->priority = pri; 2572 ev_set_priority (w, pri);
1675} 2573}
1676 2574
1677void inline_speed 2575inline_speed void
1678ev_start (EV_P_ W w, int active) 2576ev_start (EV_P_ W w, int active)
1679{ 2577{
1680 pri_adjust (EV_A_ w); 2578 pri_adjust (EV_A_ w);
1681 w->active = active; 2579 w->active = active;
1682 ev_ref (EV_A); 2580 ev_ref (EV_A);
1683} 2581}
1684 2582
1685void inline_size 2583inline_size void
1686ev_stop (EV_P_ W w) 2584ev_stop (EV_P_ W w)
1687{ 2585{
1688 ev_unref (EV_A); 2586 ev_unref (EV_A);
1689 w->active = 0; 2587 w->active = 0;
1690} 2588}
… …
1697 int fd = w->fd; 2595 int fd = w->fd;
1698 2596
1699 if (expect_false (ev_is_active (w))) 2597 if (expect_false (ev_is_active (w)))
1700 return; 2598 return;
1701 2599
1702 assert (("ev_io_start called with negative fd", fd >= 0)); 2600 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2601 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2602
2603 EV_FREQUENT_CHECK;
1703 2604
1704 ev_start (EV_A_ (W)w, 1); 2605 ev_start (EV_A_ (W)w, 1);
1705 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2606 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1706 wlist_add (&anfds[fd].head, (WL)w); 2607 wlist_add (&anfds[fd].head, (WL)w);
1707 2608
1708 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2609 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1709 w->events &= ~EV_IOFDSET; 2610 w->events &= ~EV__IOFDSET;
2611
2612 EV_FREQUENT_CHECK;
1710} 2613}
1711 2614
1712void noinline 2615void noinline
1713ev_io_stop (EV_P_ ev_io *w) 2616ev_io_stop (EV_P_ ev_io *w)
1714{ 2617{
1715 clear_pending (EV_A_ (W)w); 2618 clear_pending (EV_A_ (W)w);
1716 if (expect_false (!ev_is_active (w))) 2619 if (expect_false (!ev_is_active (w)))
1717 return; 2620 return;
1718 2621
1719 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2622 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2623
2624 EV_FREQUENT_CHECK;
1720 2625
1721 wlist_del (&anfds[w->fd].head, (WL)w); 2626 wlist_del (&anfds[w->fd].head, (WL)w);
1722 ev_stop (EV_A_ (W)w); 2627 ev_stop (EV_A_ (W)w);
1723 2628
1724 fd_change (EV_A_ w->fd, 1); 2629 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2630
2631 EV_FREQUENT_CHECK;
1725} 2632}
1726 2633
1727void noinline 2634void noinline
1728ev_timer_start (EV_P_ ev_timer *w) 2635ev_timer_start (EV_P_ ev_timer *w)
1729{ 2636{
1730 if (expect_false (ev_is_active (w))) 2637 if (expect_false (ev_is_active (w)))
1731 return; 2638 return;
1732 2639
1733 ((WT)w)->at += mn_now; 2640 ev_at (w) += mn_now;
1734 2641
1735 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2642 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1736 2643
2644 EV_FREQUENT_CHECK;
2645
2646 ++timercnt;
1737 ev_start (EV_A_ (W)w, ++timercnt); 2647 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1738 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2648 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1739 timers [timercnt - 1] = (WT)w; 2649 ANHE_w (timers [ev_active (w)]) = (WT)w;
1740 upheap (timers, timercnt - 1); 2650 ANHE_at_cache (timers [ev_active (w)]);
2651 upheap (timers, ev_active (w));
1741 2652
2653 EV_FREQUENT_CHECK;
2654
1742 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2655 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1743} 2656}
1744 2657
1745void noinline 2658void noinline
1746ev_timer_stop (EV_P_ ev_timer *w) 2659ev_timer_stop (EV_P_ ev_timer *w)
1747{ 2660{
1748 clear_pending (EV_A_ (W)w); 2661 clear_pending (EV_A_ (W)w);
1749 if (expect_false (!ev_is_active (w))) 2662 if (expect_false (!ev_is_active (w)))
1750 return; 2663 return;
1751 2664
1752 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2665 EV_FREQUENT_CHECK;
1753 2666
1754 { 2667 {
1755 int active = ((W)w)->active; 2668 int active = ev_active (w);
1756 2669
2670 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2671
2672 --timercnt;
2673
1757 if (expect_true (--active < --timercnt)) 2674 if (expect_true (active < timercnt + HEAP0))
1758 { 2675 {
1759 timers [active] = timers [timercnt]; 2676 timers [active] = timers [timercnt + HEAP0];
1760 adjustheap (timers, timercnt, active); 2677 adjustheap (timers, timercnt, active);
1761 } 2678 }
1762 } 2679 }
1763 2680
1764 ((WT)w)->at -= mn_now; 2681 ev_at (w) -= mn_now;
1765 2682
1766 ev_stop (EV_A_ (W)w); 2683 ev_stop (EV_A_ (W)w);
2684
2685 EV_FREQUENT_CHECK;
1767} 2686}
1768 2687
1769void noinline 2688void noinline
1770ev_timer_again (EV_P_ ev_timer *w) 2689ev_timer_again (EV_P_ ev_timer *w)
1771{ 2690{
2691 EV_FREQUENT_CHECK;
2692
1772 if (ev_is_active (w)) 2693 if (ev_is_active (w))
1773 { 2694 {
1774 if (w->repeat) 2695 if (w->repeat)
1775 { 2696 {
1776 ((WT)w)->at = mn_now + w->repeat; 2697 ev_at (w) = mn_now + w->repeat;
2698 ANHE_at_cache (timers [ev_active (w)]);
1777 adjustheap (timers, timercnt, ((W)w)->active - 1); 2699 adjustheap (timers, timercnt, ev_active (w));
1778 } 2700 }
1779 else 2701 else
1780 ev_timer_stop (EV_A_ w); 2702 ev_timer_stop (EV_A_ w);
1781 } 2703 }
1782 else if (w->repeat) 2704 else if (w->repeat)
1783 { 2705 {
1784 w->at = w->repeat; 2706 ev_at (w) = w->repeat;
1785 ev_timer_start (EV_A_ w); 2707 ev_timer_start (EV_A_ w);
1786 } 2708 }
2709
2710 EV_FREQUENT_CHECK;
2711}
2712
2713ev_tstamp
2714ev_timer_remaining (EV_P_ ev_timer *w)
2715{
2716 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1787} 2717}
1788 2718
1789#if EV_PERIODIC_ENABLE 2719#if EV_PERIODIC_ENABLE
1790void noinline 2720void noinline
1791ev_periodic_start (EV_P_ ev_periodic *w) 2721ev_periodic_start (EV_P_ ev_periodic *w)
1792{ 2722{
1793 if (expect_false (ev_is_active (w))) 2723 if (expect_false (ev_is_active (w)))
1794 return; 2724 return;
1795 2725
1796 if (w->reschedule_cb) 2726 if (w->reschedule_cb)
1797 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2727 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1798 else if (w->interval) 2728 else if (w->interval)
1799 { 2729 {
1800 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2730 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1801 /* this formula differs from the one in periodic_reify because we do not always round up */ 2731 /* this formula differs from the one in periodic_reify because we do not always round up */
1802 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2732 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1803 } 2733 }
1804 else 2734 else
1805 ((WT)w)->at = w->offset; 2735 ev_at (w) = w->offset;
1806 2736
2737 EV_FREQUENT_CHECK;
2738
2739 ++periodiccnt;
1807 ev_start (EV_A_ (W)w, ++periodiccnt); 2740 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1808 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2741 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1809 periodics [periodiccnt - 1] = (WT)w; 2742 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1810 upheap (periodics, periodiccnt - 1); 2743 ANHE_at_cache (periodics [ev_active (w)]);
2744 upheap (periodics, ev_active (w));
1811 2745
2746 EV_FREQUENT_CHECK;
2747
1812 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2748 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1813} 2749}
1814 2750
1815void noinline 2751void noinline
1816ev_periodic_stop (EV_P_ ev_periodic *w) 2752ev_periodic_stop (EV_P_ ev_periodic *w)
1817{ 2753{
1818 clear_pending (EV_A_ (W)w); 2754 clear_pending (EV_A_ (W)w);
1819 if (expect_false (!ev_is_active (w))) 2755 if (expect_false (!ev_is_active (w)))
1820 return; 2756 return;
1821 2757
1822 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2758 EV_FREQUENT_CHECK;
1823 2759
1824 { 2760 {
1825 int active = ((W)w)->active; 2761 int active = ev_active (w);
1826 2762
2763 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2764
2765 --periodiccnt;
2766
1827 if (expect_true (--active < --periodiccnt)) 2767 if (expect_true (active < periodiccnt + HEAP0))
1828 { 2768 {
1829 periodics [active] = periodics [periodiccnt]; 2769 periodics [active] = periodics [periodiccnt + HEAP0];
1830 adjustheap (periodics, periodiccnt, active); 2770 adjustheap (periodics, periodiccnt, active);
1831 } 2771 }
1832 } 2772 }
1833 2773
1834 ev_stop (EV_A_ (W)w); 2774 ev_stop (EV_A_ (W)w);
2775
2776 EV_FREQUENT_CHECK;
1835} 2777}
1836 2778
1837void noinline 2779void noinline
1838ev_periodic_again (EV_P_ ev_periodic *w) 2780ev_periodic_again (EV_P_ ev_periodic *w)
1839{ 2781{
… …
1845 2787
1846#ifndef SA_RESTART 2788#ifndef SA_RESTART
1847# define SA_RESTART 0 2789# define SA_RESTART 0
1848#endif 2790#endif
1849 2791
2792#if EV_SIGNAL_ENABLE
2793
1850void noinline 2794void noinline
1851ev_signal_start (EV_P_ ev_signal *w) 2795ev_signal_start (EV_P_ ev_signal *w)
1852{ 2796{
1853#if EV_MULTIPLICITY
1854 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1855#endif
1856 if (expect_false (ev_is_active (w))) 2797 if (expect_false (ev_is_active (w)))
1857 return; 2798 return;
1858 2799
1859 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2800 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1860 2801
2802#if EV_MULTIPLICITY
2803 assert (("libev: a signal must not be attached to two different loops",
2804 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2805
2806 signals [w->signum - 1].loop = EV_A;
2807#endif
2808
2809 EV_FREQUENT_CHECK;
2810
2811#if EV_USE_SIGNALFD
2812 if (sigfd == -2)
1861 { 2813 {
1862#ifndef _WIN32 2814 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1863 sigset_t full, prev; 2815 if (sigfd < 0 && errno == EINVAL)
1864 sigfillset (&full); 2816 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1865 sigprocmask (SIG_SETMASK, &full, &prev);
1866#endif
1867 2817
1868 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2818 if (sigfd >= 0)
2819 {
2820 fd_intern (sigfd); /* doing it twice will not hurt */
1869 2821
1870#ifndef _WIN32 2822 sigemptyset (&sigfd_set);
1871 sigprocmask (SIG_SETMASK, &prev, 0); 2823
1872#endif 2824 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2825 ev_set_priority (&sigfd_w, EV_MAXPRI);
2826 ev_io_start (EV_A_ &sigfd_w);
2827 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2828 }
1873 } 2829 }
2830
2831 if (sigfd >= 0)
2832 {
2833 /* TODO: check .head */
2834 sigaddset (&sigfd_set, w->signum);
2835 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2836
2837 signalfd (sigfd, &sigfd_set, 0);
2838 }
2839#endif
1874 2840
1875 ev_start (EV_A_ (W)w, 1); 2841 ev_start (EV_A_ (W)w, 1);
1876 wlist_add (&signals [w->signum - 1].head, (WL)w); 2842 wlist_add (&signals [w->signum - 1].head, (WL)w);
1877 2843
1878 if (!((WL)w)->next) 2844 if (!((WL)w)->next)
2845# if EV_USE_SIGNALFD
2846 if (sigfd < 0) /*TODO*/
2847# endif
1879 { 2848 {
1880#if _WIN32 2849# ifdef _WIN32
2850 evpipe_init (EV_A);
2851
1881 signal (w->signum, sighandler); 2852 signal (w->signum, ev_sighandler);
1882#else 2853# else
1883 struct sigaction sa; 2854 struct sigaction sa;
2855
2856 evpipe_init (EV_A);
2857
1884 sa.sa_handler = sighandler; 2858 sa.sa_handler = ev_sighandler;
1885 sigfillset (&sa.sa_mask); 2859 sigfillset (&sa.sa_mask);
1886 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2860 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1887 sigaction (w->signum, &sa, 0); 2861 sigaction (w->signum, &sa, 0);
2862
2863 sigemptyset (&sa.sa_mask);
2864 sigaddset (&sa.sa_mask, w->signum);
2865 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
1888#endif 2866#endif
1889 } 2867 }
2868
2869 EV_FREQUENT_CHECK;
1890} 2870}
1891 2871
1892void noinline 2872void noinline
1893ev_signal_stop (EV_P_ ev_signal *w) 2873ev_signal_stop (EV_P_ ev_signal *w)
1894{ 2874{
1895 clear_pending (EV_A_ (W)w); 2875 clear_pending (EV_A_ (W)w);
1896 if (expect_false (!ev_is_active (w))) 2876 if (expect_false (!ev_is_active (w)))
1897 return; 2877 return;
1898 2878
2879 EV_FREQUENT_CHECK;
2880
1899 wlist_del (&signals [w->signum - 1].head, (WL)w); 2881 wlist_del (&signals [w->signum - 1].head, (WL)w);
1900 ev_stop (EV_A_ (W)w); 2882 ev_stop (EV_A_ (W)w);
1901 2883
1902 if (!signals [w->signum - 1].head) 2884 if (!signals [w->signum - 1].head)
2885 {
2886#if EV_MULTIPLICITY
2887 signals [w->signum - 1].loop = 0; /* unattach from signal */
2888#endif
2889#if EV_USE_SIGNALFD
2890 if (sigfd >= 0)
2891 {
2892 sigset_t ss;
2893
2894 sigemptyset (&ss);
2895 sigaddset (&ss, w->signum);
2896 sigdelset (&sigfd_set, w->signum);
2897
2898 signalfd (sigfd, &sigfd_set, 0);
2899 sigprocmask (SIG_UNBLOCK, &ss, 0);
2900 }
2901 else
2902#endif
1903 signal (w->signum, SIG_DFL); 2903 signal (w->signum, SIG_DFL);
2904 }
2905
2906 EV_FREQUENT_CHECK;
1904} 2907}
2908
2909#endif
2910
2911#if EV_CHILD_ENABLE
1905 2912
1906void 2913void
1907ev_child_start (EV_P_ ev_child *w) 2914ev_child_start (EV_P_ ev_child *w)
1908{ 2915{
1909#if EV_MULTIPLICITY 2916#if EV_MULTIPLICITY
1910 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2917 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1911#endif 2918#endif
1912 if (expect_false (ev_is_active (w))) 2919 if (expect_false (ev_is_active (w)))
1913 return; 2920 return;
1914 2921
2922 EV_FREQUENT_CHECK;
2923
1915 ev_start (EV_A_ (W)w, 1); 2924 ev_start (EV_A_ (W)w, 1);
1916 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2925 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2926
2927 EV_FREQUENT_CHECK;
1917} 2928}
1918 2929
1919void 2930void
1920ev_child_stop (EV_P_ ev_child *w) 2931ev_child_stop (EV_P_ ev_child *w)
1921{ 2932{
1922 clear_pending (EV_A_ (W)w); 2933 clear_pending (EV_A_ (W)w);
1923 if (expect_false (!ev_is_active (w))) 2934 if (expect_false (!ev_is_active (w)))
1924 return; 2935 return;
1925 2936
2937 EV_FREQUENT_CHECK;
2938
1926 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2939 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1927 ev_stop (EV_A_ (W)w); 2940 ev_stop (EV_A_ (W)w);
2941
2942 EV_FREQUENT_CHECK;
1928} 2943}
2944
2945#endif
1929 2946
1930#if EV_STAT_ENABLE 2947#if EV_STAT_ENABLE
1931 2948
1932# ifdef _WIN32 2949# ifdef _WIN32
1933# undef lstat 2950# undef lstat
1934# define lstat(a,b) _stati64 (a,b) 2951# define lstat(a,b) _stati64 (a,b)
1935# endif 2952# endif
1936 2953
1937#define DEF_STAT_INTERVAL 5.0074891 2954#define DEF_STAT_INTERVAL 5.0074891
2955#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1938#define MIN_STAT_INTERVAL 0.1074891 2956#define MIN_STAT_INTERVAL 0.1074891
1939 2957
1940static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2958static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1941 2959
1942#if EV_USE_INOTIFY 2960#if EV_USE_INOTIFY
1943# define EV_INOTIFY_BUFSIZE 8192 2961
2962/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2963# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1944 2964
1945static void noinline 2965static void noinline
1946infy_add (EV_P_ ev_stat *w) 2966infy_add (EV_P_ ev_stat *w)
1947{ 2967{
1948 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); 2968 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);
1949 2969
1950 if (w->wd < 0) 2970 if (w->wd >= 0)
2971 {
2972 struct statfs sfs;
2973
2974 /* now local changes will be tracked by inotify, but remote changes won't */
2975 /* unless the filesystem is known to be local, we therefore still poll */
2976 /* also do poll on <2.6.25, but with normal frequency */
2977
2978 if (!fs_2625)
2979 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2980 else if (!statfs (w->path, &sfs)
2981 && (sfs.f_type == 0x1373 /* devfs */
2982 || sfs.f_type == 0xEF53 /* ext2/3 */
2983 || sfs.f_type == 0x3153464a /* jfs */
2984 || sfs.f_type == 0x52654973 /* reiser3 */
2985 || sfs.f_type == 0x01021994 /* tempfs */
2986 || sfs.f_type == 0x58465342 /* xfs */))
2987 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2988 else
2989 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1951 { 2990 }
1952 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2991 else
2992 {
2993 /* can't use inotify, continue to stat */
2994 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1953 2995
1954 /* monitor some parent directory for speedup hints */ 2996 /* if path is not there, monitor some parent directory for speedup hints */
2997 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2998 /* but an efficiency issue only */
1955 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2999 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1956 { 3000 {
1957 char path [4096]; 3001 char path [4096];
1958 strcpy (path, w->path); 3002 strcpy (path, w->path);
1959 3003
… …
1962 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3006 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1963 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3007 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1964 3008
1965 char *pend = strrchr (path, '/'); 3009 char *pend = strrchr (path, '/');
1966 3010
1967 if (!pend) 3011 if (!pend || pend == path)
1968 break; /* whoops, no '/', complain to your admin */ 3012 break;
1969 3013
1970 *pend = 0; 3014 *pend = 0;
1971 w->wd = inotify_add_watch (fs_fd, path, mask); 3015 w->wd = inotify_add_watch (fs_fd, path, mask);
1972 } 3016 }
1973 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3017 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1974 } 3018 }
1975 } 3019 }
1976 else
1977 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1978 3020
1979 if (w->wd >= 0) 3021 if (w->wd >= 0)
1980 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3022 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3023
3024 /* now re-arm timer, if required */
3025 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3026 ev_timer_again (EV_A_ &w->timer);
3027 if (ev_is_active (&w->timer)) ev_unref (EV_A);
1981} 3028}
1982 3029
1983static void noinline 3030static void noinline
1984infy_del (EV_P_ ev_stat *w) 3031infy_del (EV_P_ ev_stat *w)
1985{ 3032{
… …
1988 3035
1989 if (wd < 0) 3036 if (wd < 0)
1990 return; 3037 return;
1991 3038
1992 w->wd = -2; 3039 w->wd = -2;
1993 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3040 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
1994 wlist_del (&fs_hash [slot].head, (WL)w); 3041 wlist_del (&fs_hash [slot].head, (WL)w);
1995 3042
1996 /* remove this watcher, if others are watching it, they will rearm */ 3043 /* remove this watcher, if others are watching it, they will rearm */
1997 inotify_rm_watch (fs_fd, wd); 3044 inotify_rm_watch (fs_fd, wd);
1998} 3045}
1999 3046
2000static void noinline 3047static void noinline
2001infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3048infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2002{ 3049{
2003 if (slot < 0) 3050 if (slot < 0)
2004 /* overflow, need to check for all hahs slots */ 3051 /* overflow, need to check for all hash slots */
2005 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3052 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2006 infy_wd (EV_A_ slot, wd, ev); 3053 infy_wd (EV_A_ slot, wd, ev);
2007 else 3054 else
2008 { 3055 {
2009 WL w_; 3056 WL w_;
2010 3057
2011 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3058 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2012 { 3059 {
2013 ev_stat *w = (ev_stat *)w_; 3060 ev_stat *w = (ev_stat *)w_;
2014 w_ = w_->next; /* lets us remove this watcher and all before it */ 3061 w_ = w_->next; /* lets us remove this watcher and all before it */
2015 3062
2016 if (w->wd == wd || wd == -1) 3063 if (w->wd == wd || wd == -1)
2017 { 3064 {
2018 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3065 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2019 { 3066 {
3067 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2020 w->wd = -1; 3068 w->wd = -1;
2021 infy_add (EV_A_ w); /* re-add, no matter what */ 3069 infy_add (EV_A_ w); /* re-add, no matter what */
2022 } 3070 }
2023 3071
2024 stat_timer_cb (EV_A_ &w->timer, 0); 3072 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2029 3077
2030static void 3078static void
2031infy_cb (EV_P_ ev_io *w, int revents) 3079infy_cb (EV_P_ ev_io *w, int revents)
2032{ 3080{
2033 char buf [EV_INOTIFY_BUFSIZE]; 3081 char buf [EV_INOTIFY_BUFSIZE];
2034 struct inotify_event *ev = (struct inotify_event *)buf;
2035 int ofs; 3082 int ofs;
2036 int len = read (fs_fd, buf, sizeof (buf)); 3083 int len = read (fs_fd, buf, sizeof (buf));
2037 3084
2038 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3085 for (ofs = 0; ofs < len; )
3086 {
3087 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2039 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3088 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3089 ofs += sizeof (struct inotify_event) + ev->len;
3090 }
2040} 3091}
2041 3092
2042void inline_size 3093inline_size void
3094ev_check_2625 (EV_P)
3095{
3096 /* kernels < 2.6.25 are borked
3097 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3098 */
3099 if (ev_linux_version () < 0x020619)
3100 return;
3101
3102 fs_2625 = 1;
3103}
3104
3105inline_size int
3106infy_newfd (void)
3107{
3108#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3109 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3110 if (fd >= 0)
3111 return fd;
3112#endif
3113 return inotify_init ();
3114}
3115
3116inline_size void
2043infy_init (EV_P) 3117infy_init (EV_P)
2044{ 3118{
2045 if (fs_fd != -2) 3119 if (fs_fd != -2)
2046 return; 3120 return;
2047 3121
3122 fs_fd = -1;
3123
3124 ev_check_2625 (EV_A);
3125
2048 fs_fd = inotify_init (); 3126 fs_fd = infy_newfd ();
2049 3127
2050 if (fs_fd >= 0) 3128 if (fs_fd >= 0)
2051 { 3129 {
3130 fd_intern (fs_fd);
2052 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3131 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2053 ev_set_priority (&fs_w, EV_MAXPRI); 3132 ev_set_priority (&fs_w, EV_MAXPRI);
2054 ev_io_start (EV_A_ &fs_w); 3133 ev_io_start (EV_A_ &fs_w);
3134 ev_unref (EV_A);
2055 } 3135 }
2056} 3136}
2057 3137
2058void inline_size 3138inline_size void
2059infy_fork (EV_P) 3139infy_fork (EV_P)
2060{ 3140{
2061 int slot; 3141 int slot;
2062 3142
2063 if (fs_fd < 0) 3143 if (fs_fd < 0)
2064 return; 3144 return;
2065 3145
3146 ev_ref (EV_A);
3147 ev_io_stop (EV_A_ &fs_w);
2066 close (fs_fd); 3148 close (fs_fd);
2067 fs_fd = inotify_init (); 3149 fs_fd = infy_newfd ();
2068 3150
3151 if (fs_fd >= 0)
3152 {
3153 fd_intern (fs_fd);
3154 ev_io_set (&fs_w, fs_fd, EV_READ);
3155 ev_io_start (EV_A_ &fs_w);
3156 ev_unref (EV_A);
3157 }
3158
2069 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3159 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2070 { 3160 {
2071 WL w_ = fs_hash [slot].head; 3161 WL w_ = fs_hash [slot].head;
2072 fs_hash [slot].head = 0; 3162 fs_hash [slot].head = 0;
2073 3163
2074 while (w_) 3164 while (w_)
… …
2079 w->wd = -1; 3169 w->wd = -1;
2080 3170
2081 if (fs_fd >= 0) 3171 if (fs_fd >= 0)
2082 infy_add (EV_A_ w); /* re-add, no matter what */ 3172 infy_add (EV_A_ w); /* re-add, no matter what */
2083 else 3173 else
3174 {
3175 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3176 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2084 ev_timer_start (EV_A_ &w->timer); 3177 ev_timer_again (EV_A_ &w->timer);
3178 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3179 }
2085 } 3180 }
2086
2087 } 3181 }
2088} 3182}
2089 3183
3184#endif
3185
3186#ifdef _WIN32
3187# define EV_LSTAT(p,b) _stati64 (p, b)
3188#else
3189# define EV_LSTAT(p,b) lstat (p, b)
2090#endif 3190#endif
2091 3191
2092void 3192void
2093ev_stat_stat (EV_P_ ev_stat *w) 3193ev_stat_stat (EV_P_ ev_stat *w)
2094{ 3194{
… …
2101static void noinline 3201static void noinline
2102stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3202stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2103{ 3203{
2104 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3204 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2105 3205
2106 /* we copy this here each the time so that */ 3206 ev_statdata prev = w->attr;
2107 /* prev has the old value when the callback gets invoked */
2108 w->prev = w->attr;
2109 ev_stat_stat (EV_A_ w); 3207 ev_stat_stat (EV_A_ w);
2110 3208
2111 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3209 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2112 if ( 3210 if (
2113 w->prev.st_dev != w->attr.st_dev 3211 prev.st_dev != w->attr.st_dev
2114 || w->prev.st_ino != w->attr.st_ino 3212 || prev.st_ino != w->attr.st_ino
2115 || w->prev.st_mode != w->attr.st_mode 3213 || prev.st_mode != w->attr.st_mode
2116 || w->prev.st_nlink != w->attr.st_nlink 3214 || prev.st_nlink != w->attr.st_nlink
2117 || w->prev.st_uid != w->attr.st_uid 3215 || prev.st_uid != w->attr.st_uid
2118 || w->prev.st_gid != w->attr.st_gid 3216 || prev.st_gid != w->attr.st_gid
2119 || w->prev.st_rdev != w->attr.st_rdev 3217 || prev.st_rdev != w->attr.st_rdev
2120 || w->prev.st_size != w->attr.st_size 3218 || prev.st_size != w->attr.st_size
2121 || w->prev.st_atime != w->attr.st_atime 3219 || prev.st_atime != w->attr.st_atime
2122 || w->prev.st_mtime != w->attr.st_mtime 3220 || prev.st_mtime != w->attr.st_mtime
2123 || w->prev.st_ctime != w->attr.st_ctime 3221 || prev.st_ctime != w->attr.st_ctime
2124 ) { 3222 ) {
3223 /* we only update w->prev on actual differences */
3224 /* in case we test more often than invoke the callback, */
3225 /* to ensure that prev is always different to attr */
3226 w->prev = prev;
3227
2125 #if EV_USE_INOTIFY 3228 #if EV_USE_INOTIFY
3229 if (fs_fd >= 0)
3230 {
2126 infy_del (EV_A_ w); 3231 infy_del (EV_A_ w);
2127 infy_add (EV_A_ w); 3232 infy_add (EV_A_ w);
2128 ev_stat_stat (EV_A_ w); /* avoid race... */ 3233 ev_stat_stat (EV_A_ w); /* avoid race... */
3234 }
2129 #endif 3235 #endif
2130 3236
2131 ev_feed_event (EV_A_ w, EV_STAT); 3237 ev_feed_event (EV_A_ w, EV_STAT);
2132 } 3238 }
2133} 3239}
… …
2136ev_stat_start (EV_P_ ev_stat *w) 3242ev_stat_start (EV_P_ ev_stat *w)
2137{ 3243{
2138 if (expect_false (ev_is_active (w))) 3244 if (expect_false (ev_is_active (w)))
2139 return; 3245 return;
2140 3246
2141 /* since we use memcmp, we need to clear any padding data etc. */
2142 memset (&w->prev, 0, sizeof (ev_statdata));
2143 memset (&w->attr, 0, sizeof (ev_statdata));
2144
2145 ev_stat_stat (EV_A_ w); 3247 ev_stat_stat (EV_A_ w);
2146 3248
3249 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2147 if (w->interval < MIN_STAT_INTERVAL) 3250 w->interval = MIN_STAT_INTERVAL;
2148 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2149 3251
2150 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3252 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2151 ev_set_priority (&w->timer, ev_priority (w)); 3253 ev_set_priority (&w->timer, ev_priority (w));
2152 3254
2153#if EV_USE_INOTIFY 3255#if EV_USE_INOTIFY
2154 infy_init (EV_A); 3256 infy_init (EV_A);
2155 3257
2156 if (fs_fd >= 0) 3258 if (fs_fd >= 0)
2157 infy_add (EV_A_ w); 3259 infy_add (EV_A_ w);
2158 else 3260 else
2159#endif 3261#endif
3262 {
2160 ev_timer_start (EV_A_ &w->timer); 3263 ev_timer_again (EV_A_ &w->timer);
3264 ev_unref (EV_A);
3265 }
2161 3266
2162 ev_start (EV_A_ (W)w, 1); 3267 ev_start (EV_A_ (W)w, 1);
3268
3269 EV_FREQUENT_CHECK;
2163} 3270}
2164 3271
2165void 3272void
2166ev_stat_stop (EV_P_ ev_stat *w) 3273ev_stat_stop (EV_P_ ev_stat *w)
2167{ 3274{
2168 clear_pending (EV_A_ (W)w); 3275 clear_pending (EV_A_ (W)w);
2169 if (expect_false (!ev_is_active (w))) 3276 if (expect_false (!ev_is_active (w)))
2170 return; 3277 return;
2171 3278
3279 EV_FREQUENT_CHECK;
3280
2172#if EV_USE_INOTIFY 3281#if EV_USE_INOTIFY
2173 infy_del (EV_A_ w); 3282 infy_del (EV_A_ w);
2174#endif 3283#endif
3284
3285 if (ev_is_active (&w->timer))
3286 {
3287 ev_ref (EV_A);
2175 ev_timer_stop (EV_A_ &w->timer); 3288 ev_timer_stop (EV_A_ &w->timer);
3289 }
2176 3290
2177 ev_stop (EV_A_ (W)w); 3291 ev_stop (EV_A_ (W)w);
3292
3293 EV_FREQUENT_CHECK;
2178} 3294}
2179#endif 3295#endif
2180 3296
2181#if EV_IDLE_ENABLE 3297#if EV_IDLE_ENABLE
2182void 3298void
… …
2185 if (expect_false (ev_is_active (w))) 3301 if (expect_false (ev_is_active (w)))
2186 return; 3302 return;
2187 3303
2188 pri_adjust (EV_A_ (W)w); 3304 pri_adjust (EV_A_ (W)w);
2189 3305
3306 EV_FREQUENT_CHECK;
3307
2190 { 3308 {
2191 int active = ++idlecnt [ABSPRI (w)]; 3309 int active = ++idlecnt [ABSPRI (w)];
2192 3310
2193 ++idleall; 3311 ++idleall;
2194 ev_start (EV_A_ (W)w, active); 3312 ev_start (EV_A_ (W)w, active);
2195 3313
2196 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3314 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2197 idles [ABSPRI (w)][active - 1] = w; 3315 idles [ABSPRI (w)][active - 1] = w;
2198 } 3316 }
3317
3318 EV_FREQUENT_CHECK;
2199} 3319}
2200 3320
2201void 3321void
2202ev_idle_stop (EV_P_ ev_idle *w) 3322ev_idle_stop (EV_P_ ev_idle *w)
2203{ 3323{
2204 clear_pending (EV_A_ (W)w); 3324 clear_pending (EV_A_ (W)w);
2205 if (expect_false (!ev_is_active (w))) 3325 if (expect_false (!ev_is_active (w)))
2206 return; 3326 return;
2207 3327
3328 EV_FREQUENT_CHECK;
3329
2208 { 3330 {
2209 int active = ((W)w)->active; 3331 int active = ev_active (w);
2210 3332
2211 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3333 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2212 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3334 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2213 3335
2214 ev_stop (EV_A_ (W)w); 3336 ev_stop (EV_A_ (W)w);
2215 --idleall; 3337 --idleall;
2216 } 3338 }
2217}
2218#endif
2219 3339
3340 EV_FREQUENT_CHECK;
3341}
3342#endif
3343
3344#if EV_PREPARE_ENABLE
2220void 3345void
2221ev_prepare_start (EV_P_ ev_prepare *w) 3346ev_prepare_start (EV_P_ ev_prepare *w)
2222{ 3347{
2223 if (expect_false (ev_is_active (w))) 3348 if (expect_false (ev_is_active (w)))
2224 return; 3349 return;
3350
3351 EV_FREQUENT_CHECK;
2225 3352
2226 ev_start (EV_A_ (W)w, ++preparecnt); 3353 ev_start (EV_A_ (W)w, ++preparecnt);
2227 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3354 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2228 prepares [preparecnt - 1] = w; 3355 prepares [preparecnt - 1] = w;
3356
3357 EV_FREQUENT_CHECK;
2229} 3358}
2230 3359
2231void 3360void
2232ev_prepare_stop (EV_P_ ev_prepare *w) 3361ev_prepare_stop (EV_P_ ev_prepare *w)
2233{ 3362{
2234 clear_pending (EV_A_ (W)w); 3363 clear_pending (EV_A_ (W)w);
2235 if (expect_false (!ev_is_active (w))) 3364 if (expect_false (!ev_is_active (w)))
2236 return; 3365 return;
2237 3366
3367 EV_FREQUENT_CHECK;
3368
2238 { 3369 {
2239 int active = ((W)w)->active; 3370 int active = ev_active (w);
3371
2240 prepares [active - 1] = prepares [--preparecnt]; 3372 prepares [active - 1] = prepares [--preparecnt];
2241 ((W)prepares [active - 1])->active = active; 3373 ev_active (prepares [active - 1]) = active;
2242 } 3374 }
2243 3375
2244 ev_stop (EV_A_ (W)w); 3376 ev_stop (EV_A_ (W)w);
2245}
2246 3377
3378 EV_FREQUENT_CHECK;
3379}
3380#endif
3381
3382#if EV_CHECK_ENABLE
2247void 3383void
2248ev_check_start (EV_P_ ev_check *w) 3384ev_check_start (EV_P_ ev_check *w)
2249{ 3385{
2250 if (expect_false (ev_is_active (w))) 3386 if (expect_false (ev_is_active (w)))
2251 return; 3387 return;
3388
3389 EV_FREQUENT_CHECK;
2252 3390
2253 ev_start (EV_A_ (W)w, ++checkcnt); 3391 ev_start (EV_A_ (W)w, ++checkcnt);
2254 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3392 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2255 checks [checkcnt - 1] = w; 3393 checks [checkcnt - 1] = w;
3394
3395 EV_FREQUENT_CHECK;
2256} 3396}
2257 3397
2258void 3398void
2259ev_check_stop (EV_P_ ev_check *w) 3399ev_check_stop (EV_P_ ev_check *w)
2260{ 3400{
2261 clear_pending (EV_A_ (W)w); 3401 clear_pending (EV_A_ (W)w);
2262 if (expect_false (!ev_is_active (w))) 3402 if (expect_false (!ev_is_active (w)))
2263 return; 3403 return;
2264 3404
3405 EV_FREQUENT_CHECK;
3406
2265 { 3407 {
2266 int active = ((W)w)->active; 3408 int active = ev_active (w);
3409
2267 checks [active - 1] = checks [--checkcnt]; 3410 checks [active - 1] = checks [--checkcnt];
2268 ((W)checks [active - 1])->active = active; 3411 ev_active (checks [active - 1]) = active;
2269 } 3412 }
2270 3413
2271 ev_stop (EV_A_ (W)w); 3414 ev_stop (EV_A_ (W)w);
3415
3416 EV_FREQUENT_CHECK;
2272} 3417}
3418#endif
2273 3419
2274#if EV_EMBED_ENABLE 3420#if EV_EMBED_ENABLE
2275void noinline 3421void noinline
2276ev_embed_sweep (EV_P_ ev_embed *w) 3422ev_embed_sweep (EV_P_ ev_embed *w)
2277{ 3423{
2278 ev_loop (w->other, EVLOOP_NONBLOCK); 3424 ev_run (w->other, EVRUN_NOWAIT);
2279} 3425}
2280 3426
2281static void 3427static void
2282embed_io_cb (EV_P_ ev_io *io, int revents) 3428embed_io_cb (EV_P_ ev_io *io, int revents)
2283{ 3429{
2284 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3430 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2285 3431
2286 if (ev_cb (w)) 3432 if (ev_cb (w))
2287 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3433 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2288 else 3434 else
2289 ev_loop (w->other, EVLOOP_NONBLOCK); 3435 ev_run (w->other, EVRUN_NOWAIT);
2290} 3436}
2291 3437
2292static void 3438static void
2293embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3439embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2294{ 3440{
2295 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3441 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2296 3442
2297 { 3443 {
2298 struct ev_loop *loop = w->other; 3444 EV_P = w->other;
2299 3445
2300 while (fdchangecnt) 3446 while (fdchangecnt)
2301 { 3447 {
2302 fd_reify (EV_A); 3448 fd_reify (EV_A);
2303 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3449 ev_run (EV_A_ EVRUN_NOWAIT);
2304 } 3450 }
2305 } 3451 }
3452}
3453
3454static void
3455embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3456{
3457 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3458
3459 ev_embed_stop (EV_A_ w);
3460
3461 {
3462 EV_P = w->other;
3463
3464 ev_loop_fork (EV_A);
3465 ev_run (EV_A_ EVRUN_NOWAIT);
3466 }
3467
3468 ev_embed_start (EV_A_ w);
2306} 3469}
2307 3470
2308#if 0 3471#if 0
2309static void 3472static void
2310embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3473embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2318{ 3481{
2319 if (expect_false (ev_is_active (w))) 3482 if (expect_false (ev_is_active (w)))
2320 return; 3483 return;
2321 3484
2322 { 3485 {
2323 struct ev_loop *loop = w->other; 3486 EV_P = w->other;
2324 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3487 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2325 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3488 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2326 } 3489 }
3490
3491 EV_FREQUENT_CHECK;
2327 3492
2328 ev_set_priority (&w->io, ev_priority (w)); 3493 ev_set_priority (&w->io, ev_priority (w));
2329 ev_io_start (EV_A_ &w->io); 3494 ev_io_start (EV_A_ &w->io);
2330 3495
2331 ev_prepare_init (&w->prepare, embed_prepare_cb); 3496 ev_prepare_init (&w->prepare, embed_prepare_cb);
2332 ev_set_priority (&w->prepare, EV_MINPRI); 3497 ev_set_priority (&w->prepare, EV_MINPRI);
2333 ev_prepare_start (EV_A_ &w->prepare); 3498 ev_prepare_start (EV_A_ &w->prepare);
2334 3499
3500 ev_fork_init (&w->fork, embed_fork_cb);
3501 ev_fork_start (EV_A_ &w->fork);
3502
2335 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3503 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2336 3504
2337 ev_start (EV_A_ (W)w, 1); 3505 ev_start (EV_A_ (W)w, 1);
3506
3507 EV_FREQUENT_CHECK;
2338} 3508}
2339 3509
2340void 3510void
2341ev_embed_stop (EV_P_ ev_embed *w) 3511ev_embed_stop (EV_P_ ev_embed *w)
2342{ 3512{
2343 clear_pending (EV_A_ (W)w); 3513 clear_pending (EV_A_ (W)w);
2344 if (expect_false (!ev_is_active (w))) 3514 if (expect_false (!ev_is_active (w)))
2345 return; 3515 return;
2346 3516
3517 EV_FREQUENT_CHECK;
3518
2347 ev_io_stop (EV_A_ &w->io); 3519 ev_io_stop (EV_A_ &w->io);
2348 ev_prepare_stop (EV_A_ &w->prepare); 3520 ev_prepare_stop (EV_A_ &w->prepare);
3521 ev_fork_stop (EV_A_ &w->fork);
2349 3522
2350 ev_stop (EV_A_ (W)w); 3523 ev_stop (EV_A_ (W)w);
3524
3525 EV_FREQUENT_CHECK;
2351} 3526}
2352#endif 3527#endif
2353 3528
2354#if EV_FORK_ENABLE 3529#if EV_FORK_ENABLE
2355void 3530void
2356ev_fork_start (EV_P_ ev_fork *w) 3531ev_fork_start (EV_P_ ev_fork *w)
2357{ 3532{
2358 if (expect_false (ev_is_active (w))) 3533 if (expect_false (ev_is_active (w)))
2359 return; 3534 return;
2360 3535
3536 EV_FREQUENT_CHECK;
3537
2361 ev_start (EV_A_ (W)w, ++forkcnt); 3538 ev_start (EV_A_ (W)w, ++forkcnt);
2362 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3539 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2363 forks [forkcnt - 1] = w; 3540 forks [forkcnt - 1] = w;
3541
3542 EV_FREQUENT_CHECK;
2364} 3543}
2365 3544
2366void 3545void
2367ev_fork_stop (EV_P_ ev_fork *w) 3546ev_fork_stop (EV_P_ ev_fork *w)
2368{ 3547{
2369 clear_pending (EV_A_ (W)w); 3548 clear_pending (EV_A_ (W)w);
2370 if (expect_false (!ev_is_active (w))) 3549 if (expect_false (!ev_is_active (w)))
2371 return; 3550 return;
2372 3551
3552 EV_FREQUENT_CHECK;
3553
2373 { 3554 {
2374 int active = ((W)w)->active; 3555 int active = ev_active (w);
3556
2375 forks [active - 1] = forks [--forkcnt]; 3557 forks [active - 1] = forks [--forkcnt];
2376 ((W)forks [active - 1])->active = active; 3558 ev_active (forks [active - 1]) = active;
2377 } 3559 }
2378 3560
2379 ev_stop (EV_A_ (W)w); 3561 ev_stop (EV_A_ (W)w);
3562
3563 EV_FREQUENT_CHECK;
3564}
3565#endif
3566
3567#if EV_ASYNC_ENABLE
3568void
3569ev_async_start (EV_P_ ev_async *w)
3570{
3571 if (expect_false (ev_is_active (w)))
3572 return;
3573
3574 w->sent = 0;
3575
3576 evpipe_init (EV_A);
3577
3578 EV_FREQUENT_CHECK;
3579
3580 ev_start (EV_A_ (W)w, ++asynccnt);
3581 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3582 asyncs [asynccnt - 1] = w;
3583
3584 EV_FREQUENT_CHECK;
3585}
3586
3587void
3588ev_async_stop (EV_P_ ev_async *w)
3589{
3590 clear_pending (EV_A_ (W)w);
3591 if (expect_false (!ev_is_active (w)))
3592 return;
3593
3594 EV_FREQUENT_CHECK;
3595
3596 {
3597 int active = ev_active (w);
3598
3599 asyncs [active - 1] = asyncs [--asynccnt];
3600 ev_active (asyncs [active - 1]) = active;
3601 }
3602
3603 ev_stop (EV_A_ (W)w);
3604
3605 EV_FREQUENT_CHECK;
3606}
3607
3608void
3609ev_async_send (EV_P_ ev_async *w)
3610{
3611 w->sent = 1;
3612 evpipe_write (EV_A_ &async_pending);
2380} 3613}
2381#endif 3614#endif
2382 3615
2383/*****************************************************************************/ 3616/*****************************************************************************/
2384 3617
… …
2394once_cb (EV_P_ struct ev_once *once, int revents) 3627once_cb (EV_P_ struct ev_once *once, int revents)
2395{ 3628{
2396 void (*cb)(int revents, void *arg) = once->cb; 3629 void (*cb)(int revents, void *arg) = once->cb;
2397 void *arg = once->arg; 3630 void *arg = once->arg;
2398 3631
2399 ev_io_stop (EV_A_ &once->io); 3632 ev_io_stop (EV_A_ &once->io);
2400 ev_timer_stop (EV_A_ &once->to); 3633 ev_timer_stop (EV_A_ &once->to);
2401 ev_free (once); 3634 ev_free (once);
2402 3635
2403 cb (revents, arg); 3636 cb (revents, arg);
2404} 3637}
2405 3638
2406static void 3639static void
2407once_cb_io (EV_P_ ev_io *w, int revents) 3640once_cb_io (EV_P_ ev_io *w, int revents)
2408{ 3641{
2409 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3642 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3643
3644 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2410} 3645}
2411 3646
2412static void 3647static void
2413once_cb_to (EV_P_ ev_timer *w, int revents) 3648once_cb_to (EV_P_ ev_timer *w, int revents)
2414{ 3649{
2415 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3650 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3651
3652 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2416} 3653}
2417 3654
2418void 3655void
2419ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3656ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2420{ 3657{
2421 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3658 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2422 3659
2423 if (expect_false (!once)) 3660 if (expect_false (!once))
2424 { 3661 {
2425 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3662 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2426 return; 3663 return;
2427 } 3664 }
2428 3665
2429 once->cb = cb; 3666 once->cb = cb;
2430 once->arg = arg; 3667 once->arg = arg;
… …
2442 ev_timer_set (&once->to, timeout, 0.); 3679 ev_timer_set (&once->to, timeout, 0.);
2443 ev_timer_start (EV_A_ &once->to); 3680 ev_timer_start (EV_A_ &once->to);
2444 } 3681 }
2445} 3682}
2446 3683
3684/*****************************************************************************/
3685
3686#if EV_WALK_ENABLE
3687void
3688ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3689{
3690 int i, j;
3691 ev_watcher_list *wl, *wn;
3692
3693 if (types & (EV_IO | EV_EMBED))
3694 for (i = 0; i < anfdmax; ++i)
3695 for (wl = anfds [i].head; wl; )
3696 {
3697 wn = wl->next;
3698
3699#if EV_EMBED_ENABLE
3700 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3701 {
3702 if (types & EV_EMBED)
3703 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3704 }
3705 else
3706#endif
3707#if EV_USE_INOTIFY
3708 if (ev_cb ((ev_io *)wl) == infy_cb)
3709 ;
3710 else
3711#endif
3712 if ((ev_io *)wl != &pipe_w)
3713 if (types & EV_IO)
3714 cb (EV_A_ EV_IO, wl);
3715
3716 wl = wn;
3717 }
3718
3719 if (types & (EV_TIMER | EV_STAT))
3720 for (i = timercnt + HEAP0; i-- > HEAP0; )
3721#if EV_STAT_ENABLE
3722 /*TODO: timer is not always active*/
3723 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3724 {
3725 if (types & EV_STAT)
3726 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3727 }
3728 else
3729#endif
3730 if (types & EV_TIMER)
3731 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3732
3733#if EV_PERIODIC_ENABLE
3734 if (types & EV_PERIODIC)
3735 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3736 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3737#endif
3738
3739#if EV_IDLE_ENABLE
3740 if (types & EV_IDLE)
3741 for (j = NUMPRI; i--; )
3742 for (i = idlecnt [j]; i--; )
3743 cb (EV_A_ EV_IDLE, idles [j][i]);
3744#endif
3745
3746#if EV_FORK_ENABLE
3747 if (types & EV_FORK)
3748 for (i = forkcnt; i--; )
3749 if (ev_cb (forks [i]) != embed_fork_cb)
3750 cb (EV_A_ EV_FORK, forks [i]);
3751#endif
3752
3753#if EV_ASYNC_ENABLE
3754 if (types & EV_ASYNC)
3755 for (i = asynccnt; i--; )
3756 cb (EV_A_ EV_ASYNC, asyncs [i]);
3757#endif
3758
3759#if EV_PREPARE_ENABLE
3760 if (types & EV_PREPARE)
3761 for (i = preparecnt; i--; )
3762# if EV_EMBED_ENABLE
3763 if (ev_cb (prepares [i]) != embed_prepare_cb)
3764# endif
3765 cb (EV_A_ EV_PREPARE, prepares [i]);
3766#endif
3767
3768#if EV_CHECK_ENABLE
3769 if (types & EV_CHECK)
3770 for (i = checkcnt; i--; )
3771 cb (EV_A_ EV_CHECK, checks [i]);
3772#endif
3773
3774#if EV_SIGNAL_ENABLE
3775 if (types & EV_SIGNAL)
3776 for (i = 0; i < EV_NSIG - 1; ++i)
3777 for (wl = signals [i].head; wl; )
3778 {
3779 wn = wl->next;
3780 cb (EV_A_ EV_SIGNAL, wl);
3781 wl = wn;
3782 }
3783#endif
3784
3785#if EV_CHILD_ENABLE
3786 if (types & EV_CHILD)
3787 for (i = (EV_PID_HASHSIZE); i--; )
3788 for (wl = childs [i]; wl; )
3789 {
3790 wn = wl->next;
3791 cb (EV_A_ EV_CHILD, wl);
3792 wl = wn;
3793 }
3794#endif
3795/* EV_STAT 0x00001000 /* stat data changed */
3796/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3797}
3798#endif
3799
2447#if EV_MULTIPLICITY 3800#if EV_MULTIPLICITY
2448 #include "ev_wrap.h" 3801 #include "ev_wrap.h"
2449#endif 3802#endif
2450 3803
2451#ifdef __cplusplus 3804EV_CPP(})
2452}
2453#endif
2454 3805

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