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Comparing libev/ev.c (file contents):
Revision 1.204 by root, Fri Jan 18 13:45:55 2008 UTC vs.
Revision 1.363 by root, Sun Oct 24 19:38:20 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;
1010} 1600}
1011 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
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{
1015 io_blocktime = interval; 1611 io_blocktime = interval;
1016} 1612}
… …
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 /* mimic free (0) */
1742 if (!EV_A)
1743 return;
1744
1745#if EV_CLEANUP_ENABLE
1746 /* queue cleanup watchers (and execute them) */
1747 if (expect_false (cleanupcnt))
1748 {
1749 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1750 EV_INVOKE_PENDING;
1751 }
1752#endif
1753
1754#if EV_CHILD_ENABLE
1755 if (ev_is_active (&childev))
1756 {
1757 ev_ref (EV_A); /* child watcher */
1758 ev_signal_stop (EV_A_ &childev);
1759 }
1760#endif
1761
1762 if (ev_is_active (&pipe_w))
1763 {
1764 /*ev_ref (EV_A);*/
1765 /*ev_io_stop (EV_A_ &pipe_w);*/
1766
1767#if EV_USE_EVENTFD
1768 if (evfd >= 0)
1769 close (evfd);
1770#endif
1771
1772 if (evpipe [0] >= 0)
1773 {
1774 EV_WIN32_CLOSE_FD (evpipe [0]);
1775 EV_WIN32_CLOSE_FD (evpipe [1]);
1776 }
1777 }
1778
1779#if EV_USE_SIGNALFD
1780 if (ev_is_active (&sigfd_w))
1781 close (sigfd);
1782#endif
1090 1783
1091#if EV_USE_INOTIFY 1784#if EV_USE_INOTIFY
1092 if (fs_fd >= 0) 1785 if (fs_fd >= 0)
1093 close (fs_fd); 1786 close (fs_fd);
1094#endif 1787#endif
1095 1788
1096 if (backend_fd >= 0) 1789 if (backend_fd >= 0)
1097 close (backend_fd); 1790 close (backend_fd);
1098 1791
1792#if EV_USE_IOCP
1793 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1794#endif
1099#if EV_USE_PORT 1795#if EV_USE_PORT
1100 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1796 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1101#endif 1797#endif
1102#if EV_USE_KQUEUE 1798#if EV_USE_KQUEUE
1103 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1799 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1118#if EV_IDLE_ENABLE 1814#if EV_IDLE_ENABLE
1119 array_free (idle, [i]); 1815 array_free (idle, [i]);
1120#endif 1816#endif
1121 } 1817 }
1122 1818
1123 ev_free (anfds); anfdmax = 0; 1819 ev_free (anfds); anfds = 0; anfdmax = 0;
1124 1820
1125 /* have to use the microsoft-never-gets-it-right macro */ 1821 /* have to use the microsoft-never-gets-it-right macro */
1822 array_free (rfeed, EMPTY);
1126 array_free (fdchange, EMPTY); 1823 array_free (fdchange, EMPTY);
1127 array_free (timer, EMPTY); 1824 array_free (timer, EMPTY);
1128#if EV_PERIODIC_ENABLE 1825#if EV_PERIODIC_ENABLE
1129 array_free (periodic, EMPTY); 1826 array_free (periodic, EMPTY);
1130#endif 1827#endif
1131#if EV_FORK_ENABLE 1828#if EV_FORK_ENABLE
1132 array_free (fork, EMPTY); 1829 array_free (fork, EMPTY);
1133#endif 1830#endif
1831#if EV_CLEANUP_ENABLE
1832 array_free (cleanup, EMPTY);
1833#endif
1134 array_free (prepare, EMPTY); 1834 array_free (prepare, EMPTY);
1135 array_free (check, EMPTY); 1835 array_free (check, EMPTY);
1836#if EV_ASYNC_ENABLE
1837 array_free (async, EMPTY);
1838#endif
1136 1839
1137 backend = 0; 1840 backend = 0;
1138}
1139 1841
1842#if EV_MULTIPLICITY
1843 if (ev_is_default_loop (EV_A))
1844#endif
1845 ev_default_loop_ptr = 0;
1846#if EV_MULTIPLICITY
1847 else
1848 ev_free (EV_A);
1849#endif
1850}
1851
1852#if EV_USE_INOTIFY
1140void inline_size infy_fork (EV_P); 1853inline_size void infy_fork (EV_P);
1854#endif
1141 1855
1142void inline_size 1856inline_size void
1143loop_fork (EV_P) 1857loop_fork (EV_P)
1144{ 1858{
1145#if EV_USE_PORT 1859#if EV_USE_PORT
1146 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1860 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1147#endif 1861#endif
… …
1153#endif 1867#endif
1154#if EV_USE_INOTIFY 1868#if EV_USE_INOTIFY
1155 infy_fork (EV_A); 1869 infy_fork (EV_A);
1156#endif 1870#endif
1157 1871
1158 if (ev_is_active (&sigev)) 1872 if (ev_is_active (&pipe_w))
1159 { 1873 {
1160 /* default loop */ 1874 /* this "locks" the handlers against writing to the pipe */
1875 /* while we modify the fd vars */
1876 sig_pending = 1;
1877#if EV_ASYNC_ENABLE
1878 async_pending = 1;
1879#endif
1161 1880
1162 ev_ref (EV_A); 1881 ev_ref (EV_A);
1163 ev_io_stop (EV_A_ &sigev); 1882 ev_io_stop (EV_A_ &pipe_w);
1164 close (sigpipe [0]);
1165 close (sigpipe [1]);
1166 1883
1167 while (pipe (sigpipe)) 1884#if EV_USE_EVENTFD
1168 syserr ("(libev) error creating pipe"); 1885 if (evfd >= 0)
1886 close (evfd);
1887#endif
1169 1888
1889 if (evpipe [0] >= 0)
1890 {
1891 EV_WIN32_CLOSE_FD (evpipe [0]);
1892 EV_WIN32_CLOSE_FD (evpipe [1]);
1893 }
1894
1895#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1170 siginit (EV_A); 1896 evpipe_init (EV_A);
1897 /* now iterate over everything, in case we missed something */
1171 sigcb (EV_A_ &sigev, EV_READ); 1898 pipecb (EV_A_ &pipe_w, EV_READ);
1899#endif
1172 } 1900 }
1173 1901
1174 postfork = 0; 1902 postfork = 0;
1175} 1903}
1904
1905#if EV_MULTIPLICITY
1906
1907struct ev_loop *
1908ev_loop_new (unsigned int flags)
1909{
1910 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1911
1912 memset (EV_A, 0, sizeof (struct ev_loop));
1913 loop_init (EV_A_ flags);
1914
1915 if (ev_backend (EV_A))
1916 return EV_A;
1917
1918 ev_free (EV_A);
1919 return 0;
1920}
1921
1922#endif /* multiplicity */
1923
1924#if EV_VERIFY
1925static void noinline
1926verify_watcher (EV_P_ W w)
1927{
1928 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1929
1930 if (w->pending)
1931 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1932}
1933
1934static void noinline
1935verify_heap (EV_P_ ANHE *heap, int N)
1936{
1937 int i;
1938
1939 for (i = HEAP0; i < N + HEAP0; ++i)
1940 {
1941 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1942 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1943 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1944
1945 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1946 }
1947}
1948
1949static void noinline
1950array_verify (EV_P_ W *ws, int cnt)
1951{
1952 while (cnt--)
1953 {
1954 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1955 verify_watcher (EV_A_ ws [cnt]);
1956 }
1957}
1958#endif
1959
1960#if EV_FEATURE_API
1961void
1962ev_verify (EV_P)
1963{
1964#if EV_VERIFY
1965 int i;
1966 WL w;
1967
1968 assert (activecnt >= -1);
1969
1970 assert (fdchangemax >= fdchangecnt);
1971 for (i = 0; i < fdchangecnt; ++i)
1972 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1973
1974 assert (anfdmax >= 0);
1975 for (i = 0; i < anfdmax; ++i)
1976 for (w = anfds [i].head; w; w = w->next)
1977 {
1978 verify_watcher (EV_A_ (W)w);
1979 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1980 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1981 }
1982
1983 assert (timermax >= timercnt);
1984 verify_heap (EV_A_ timers, timercnt);
1985
1986#if EV_PERIODIC_ENABLE
1987 assert (periodicmax >= periodiccnt);
1988 verify_heap (EV_A_ periodics, periodiccnt);
1989#endif
1990
1991 for (i = NUMPRI; i--; )
1992 {
1993 assert (pendingmax [i] >= pendingcnt [i]);
1994#if EV_IDLE_ENABLE
1995 assert (idleall >= 0);
1996 assert (idlemax [i] >= idlecnt [i]);
1997 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1998#endif
1999 }
2000
2001#if EV_FORK_ENABLE
2002 assert (forkmax >= forkcnt);
2003 array_verify (EV_A_ (W *)forks, forkcnt);
2004#endif
2005
2006#if EV_CLEANUP_ENABLE
2007 assert (cleanupmax >= cleanupcnt);
2008 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2009#endif
2010
2011#if EV_ASYNC_ENABLE
2012 assert (asyncmax >= asynccnt);
2013 array_verify (EV_A_ (W *)asyncs, asynccnt);
2014#endif
2015
2016#if EV_PREPARE_ENABLE
2017 assert (preparemax >= preparecnt);
2018 array_verify (EV_A_ (W *)prepares, preparecnt);
2019#endif
2020
2021#if EV_CHECK_ENABLE
2022 assert (checkmax >= checkcnt);
2023 array_verify (EV_A_ (W *)checks, checkcnt);
2024#endif
2025
2026# if 0
2027#if EV_CHILD_ENABLE
2028 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2029 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2030#endif
2031# endif
2032#endif
2033}
2034#endif
1176 2035
1177#if EV_MULTIPLICITY 2036#if EV_MULTIPLICITY
1178struct ev_loop * 2037struct ev_loop *
1179ev_loop_new (unsigned int flags)
1180{
1181 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1182
1183 memset (loop, 0, sizeof (struct ev_loop));
1184
1185 loop_init (EV_A_ flags);
1186
1187 if (ev_backend (EV_A))
1188 return loop;
1189
1190 return 0;
1191}
1192
1193void
1194ev_loop_destroy (EV_P)
1195{
1196 loop_destroy (EV_A);
1197 ev_free (loop);
1198}
1199
1200void
1201ev_loop_fork (EV_P)
1202{
1203 postfork = 1; // must be in line with ev_default_fork
1204}
1205
1206#endif
1207
1208#if EV_MULTIPLICITY
1209struct ev_loop *
1210ev_default_loop_init (unsigned int flags)
1211#else 2038#else
1212int 2039int
2040#endif
1213ev_default_loop (unsigned int flags) 2041ev_default_loop (unsigned int flags)
1214#endif
1215{ 2042{
1216 if (sigpipe [0] == sigpipe [1])
1217 if (pipe (sigpipe))
1218 return 0;
1219
1220 if (!ev_default_loop_ptr) 2043 if (!ev_default_loop_ptr)
1221 { 2044 {
1222#if EV_MULTIPLICITY 2045#if EV_MULTIPLICITY
1223 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2046 EV_P = ev_default_loop_ptr = &default_loop_struct;
1224#else 2047#else
1225 ev_default_loop_ptr = 1; 2048 ev_default_loop_ptr = 1;
1226#endif 2049#endif
1227 2050
1228 loop_init (EV_A_ flags); 2051 loop_init (EV_A_ flags);
1229 2052
1230 if (ev_backend (EV_A)) 2053 if (ev_backend (EV_A))
1231 { 2054 {
1232 siginit (EV_A); 2055#if EV_CHILD_ENABLE
1233
1234#ifndef _WIN32
1235 ev_signal_init (&childev, childcb, SIGCHLD); 2056 ev_signal_init (&childev, childcb, SIGCHLD);
1236 ev_set_priority (&childev, EV_MAXPRI); 2057 ev_set_priority (&childev, EV_MAXPRI);
1237 ev_signal_start (EV_A_ &childev); 2058 ev_signal_start (EV_A_ &childev);
1238 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2059 ev_unref (EV_A); /* child watcher should not keep loop alive */
1239#endif 2060#endif
… …
1244 2065
1245 return ev_default_loop_ptr; 2066 return ev_default_loop_ptr;
1246} 2067}
1247 2068
1248void 2069void
1249ev_default_destroy (void) 2070ev_loop_fork (EV_P)
1250{ 2071{
1251#if EV_MULTIPLICITY
1252 struct ev_loop *loop = ev_default_loop_ptr;
1253#endif
1254
1255#ifndef _WIN32
1256 ev_ref (EV_A); /* child watcher */
1257 ev_signal_stop (EV_A_ &childev);
1258#endif
1259
1260 ev_ref (EV_A); /* signal watcher */
1261 ev_io_stop (EV_A_ &sigev);
1262
1263 close (sigpipe [0]); sigpipe [0] = 0;
1264 close (sigpipe [1]); sigpipe [1] = 0;
1265
1266 loop_destroy (EV_A);
1267}
1268
1269void
1270ev_default_fork (void)
1271{
1272#if EV_MULTIPLICITY
1273 struct ev_loop *loop = ev_default_loop_ptr;
1274#endif
1275
1276 if (backend)
1277 postfork = 1; // must be in line with ev_loop_fork 2072 postfork = 1; /* must be in line with ev_default_fork */
1278} 2073}
1279 2074
1280/*****************************************************************************/ 2075/*****************************************************************************/
1281 2076
1282void 2077void
1283ev_invoke (EV_P_ void *w, int revents) 2078ev_invoke (EV_P_ void *w, int revents)
1284{ 2079{
1285 EV_CB_INVOKE ((W)w, revents); 2080 EV_CB_INVOKE ((W)w, revents);
1286} 2081}
1287 2082
1288void inline_speed 2083unsigned int
1289call_pending (EV_P) 2084ev_pending_count (EV_P)
2085{
2086 int pri;
2087 unsigned int count = 0;
2088
2089 for (pri = NUMPRI; pri--; )
2090 count += pendingcnt [pri];
2091
2092 return count;
2093}
2094
2095void noinline
2096ev_invoke_pending (EV_P)
1290{ 2097{
1291 int pri; 2098 int pri;
1292 2099
1293 for (pri = NUMPRI; pri--; ) 2100 for (pri = NUMPRI; pri--; )
1294 while (pendingcnt [pri]) 2101 while (pendingcnt [pri])
1295 { 2102 {
1296 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2103 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1297 2104
1298 if (expect_true (p->w))
1299 {
1300 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2105 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2106 /* ^ this is no longer true, as pending_w could be here */
1301 2107
1302 p->w->pending = 0; 2108 p->w->pending = 0;
1303 EV_CB_INVOKE (p->w, p->events); 2109 EV_CB_INVOKE (p->w, p->events);
1304 } 2110 EV_FREQUENT_CHECK;
1305 } 2111 }
1306} 2112}
1307 2113
1308void inline_size
1309timers_reify (EV_P)
1310{
1311 while (timercnt && ((WT)timers [0])->at <= mn_now)
1312 {
1313 ev_timer *w = (ev_timer *)timers [0];
1314
1315 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1316
1317 /* first reschedule or stop timer */
1318 if (w->repeat)
1319 {
1320 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1321
1322 ((WT)w)->at += w->repeat;
1323 if (((WT)w)->at < mn_now)
1324 ((WT)w)->at = mn_now;
1325
1326 downheap (timers, timercnt, 0);
1327 }
1328 else
1329 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1330
1331 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1332 }
1333}
1334
1335#if EV_PERIODIC_ENABLE
1336void inline_size
1337periodics_reify (EV_P)
1338{
1339 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1340 {
1341 ev_periodic *w = (ev_periodic *)periodics [0];
1342
1343 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1344
1345 /* first reschedule or stop timer */
1346 if (w->reschedule_cb)
1347 {
1348 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1349 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1350 downheap (periodics, periodiccnt, 0);
1351 }
1352 else if (w->interval)
1353 {
1354 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1355 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1356 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1357 downheap (periodics, periodiccnt, 0);
1358 }
1359 else
1360 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1361
1362 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1363 }
1364}
1365
1366static void noinline
1367periodics_reschedule (EV_P)
1368{
1369 int i;
1370
1371 /* adjust periodics after time jump */
1372 for (i = 0; i < periodiccnt; ++i)
1373 {
1374 ev_periodic *w = (ev_periodic *)periodics [i];
1375
1376 if (w->reschedule_cb)
1377 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1378 else if (w->interval)
1379 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1380 }
1381
1382 /* now rebuild the heap */
1383 for (i = periodiccnt >> 1; i--; )
1384 downheap (periodics, periodiccnt, i);
1385}
1386#endif
1387
1388#if EV_IDLE_ENABLE 2114#if EV_IDLE_ENABLE
1389void inline_size 2115/* make idle watchers pending. this handles the "call-idle */
2116/* only when higher priorities are idle" logic */
2117inline_size void
1390idle_reify (EV_P) 2118idle_reify (EV_P)
1391{ 2119{
1392 if (expect_false (idleall)) 2120 if (expect_false (idleall))
1393 { 2121 {
1394 int pri; 2122 int pri;
… …
1406 } 2134 }
1407 } 2135 }
1408} 2136}
1409#endif 2137#endif
1410 2138
1411void inline_speed 2139/* make timers pending */
2140inline_size void
2141timers_reify (EV_P)
2142{
2143 EV_FREQUENT_CHECK;
2144
2145 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2146 {
2147 do
2148 {
2149 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2150
2151 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2152
2153 /* first reschedule or stop timer */
2154 if (w->repeat)
2155 {
2156 ev_at (w) += w->repeat;
2157 if (ev_at (w) < mn_now)
2158 ev_at (w) = mn_now;
2159
2160 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2161
2162 ANHE_at_cache (timers [HEAP0]);
2163 downheap (timers, timercnt, HEAP0);
2164 }
2165 else
2166 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2167
2168 EV_FREQUENT_CHECK;
2169 feed_reverse (EV_A_ (W)w);
2170 }
2171 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2172
2173 feed_reverse_done (EV_A_ EV_TIMER);
2174 }
2175}
2176
2177#if EV_PERIODIC_ENABLE
2178/* make periodics pending */
2179inline_size void
2180periodics_reify (EV_P)
2181{
2182 EV_FREQUENT_CHECK;
2183
2184 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2185 {
2186 int feed_count = 0;
2187
2188 do
2189 {
2190 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2191
2192 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2193
2194 /* first reschedule or stop timer */
2195 if (w->reschedule_cb)
2196 {
2197 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2198
2199 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2200
2201 ANHE_at_cache (periodics [HEAP0]);
2202 downheap (periodics, periodiccnt, HEAP0);
2203 }
2204 else if (w->interval)
2205 {
2206 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2207 /* if next trigger time is not sufficiently in the future, put it there */
2208 /* this might happen because of floating point inexactness */
2209 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2210 {
2211 ev_at (w) += w->interval;
2212
2213 /* if interval is unreasonably low we might still have a time in the past */
2214 /* so correct this. this will make the periodic very inexact, but the user */
2215 /* has effectively asked to get triggered more often than possible */
2216 if (ev_at (w) < ev_rt_now)
2217 ev_at (w) = ev_rt_now;
2218 }
2219
2220 ANHE_at_cache (periodics [HEAP0]);
2221 downheap (periodics, periodiccnt, HEAP0);
2222 }
2223 else
2224 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2225
2226 EV_FREQUENT_CHECK;
2227 feed_reverse (EV_A_ (W)w);
2228 }
2229 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2230
2231 feed_reverse_done (EV_A_ EV_PERIODIC);
2232 }
2233}
2234
2235/* simply recalculate all periodics */
2236/* TODO: maybe ensure that at least one event happens when jumping forward? */
2237static void noinline
2238periodics_reschedule (EV_P)
2239{
2240 int i;
2241
2242 /* adjust periodics after time jump */
2243 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2244 {
2245 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2246
2247 if (w->reschedule_cb)
2248 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2249 else if (w->interval)
2250 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2251
2252 ANHE_at_cache (periodics [i]);
2253 }
2254
2255 reheap (periodics, periodiccnt);
2256}
2257#endif
2258
2259/* adjust all timers by a given offset */
2260static void noinline
2261timers_reschedule (EV_P_ ev_tstamp adjust)
2262{
2263 int i;
2264
2265 for (i = 0; i < timercnt; ++i)
2266 {
2267 ANHE *he = timers + i + HEAP0;
2268 ANHE_w (*he)->at += adjust;
2269 ANHE_at_cache (*he);
2270 }
2271}
2272
2273/* fetch new monotonic and realtime times from the kernel */
2274/* also detect if there was a timejump, and act accordingly */
2275inline_speed void
1412time_update (EV_P_ ev_tstamp max_block) 2276time_update (EV_P_ ev_tstamp max_block)
1413{ 2277{
1414 int i;
1415
1416#if EV_USE_MONOTONIC 2278#if EV_USE_MONOTONIC
1417 if (expect_true (have_monotonic)) 2279 if (expect_true (have_monotonic))
1418 { 2280 {
2281 int i;
1419 ev_tstamp odiff = rtmn_diff; 2282 ev_tstamp odiff = rtmn_diff;
1420 2283
1421 mn_now = get_clock (); 2284 mn_now = get_clock ();
1422 2285
1423 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2286 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1441 */ 2304 */
1442 for (i = 4; --i; ) 2305 for (i = 4; --i; )
1443 { 2306 {
1444 rtmn_diff = ev_rt_now - mn_now; 2307 rtmn_diff = ev_rt_now - mn_now;
1445 2308
1446 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2309 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1447 return; /* all is well */ 2310 return; /* all is well */
1448 2311
1449 ev_rt_now = ev_time (); 2312 ev_rt_now = ev_time ();
1450 mn_now = get_clock (); 2313 mn_now = get_clock ();
1451 now_floor = mn_now; 2314 now_floor = mn_now;
1452 } 2315 }
1453 2316
2317 /* no timer adjustment, as the monotonic clock doesn't jump */
2318 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1454# if EV_PERIODIC_ENABLE 2319# if EV_PERIODIC_ENABLE
1455 periodics_reschedule (EV_A); 2320 periodics_reschedule (EV_A);
1456# endif 2321# endif
1457 /* no timer adjustment, as the monotonic clock doesn't jump */
1458 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1459 } 2322 }
1460 else 2323 else
1461#endif 2324#endif
1462 { 2325 {
1463 ev_rt_now = ev_time (); 2326 ev_rt_now = ev_time ();
1464 2327
1465 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2328 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1466 { 2329 {
2330 /* adjust timers. this is easy, as the offset is the same for all of them */
2331 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1467#if EV_PERIODIC_ENABLE 2332#if EV_PERIODIC_ENABLE
1468 periodics_reschedule (EV_A); 2333 periodics_reschedule (EV_A);
1469#endif 2334#endif
1470 /* adjust timers. this is easy, as the offset is the same for all of them */
1471 for (i = 0; i < timercnt; ++i)
1472 ((WT)timers [i])->at += ev_rt_now - mn_now;
1473 } 2335 }
1474 2336
1475 mn_now = ev_rt_now; 2337 mn_now = ev_rt_now;
1476 } 2338 }
1477} 2339}
1478 2340
1479void 2341void
1480ev_ref (EV_P)
1481{
1482 ++activecnt;
1483}
1484
1485void
1486ev_unref (EV_P)
1487{
1488 --activecnt;
1489}
1490
1491static int loop_done;
1492
1493void
1494ev_loop (EV_P_ int flags) 2342ev_run (EV_P_ int flags)
1495{ 2343{
1496 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2344#if EV_FEATURE_API
1497 ? EVUNLOOP_ONE 2345 ++loop_depth;
1498 : EVUNLOOP_CANCEL; 2346#endif
1499 2347
2348 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2349
2350 loop_done = EVBREAK_CANCEL;
2351
1500 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2352 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1501 2353
1502 do 2354 do
1503 { 2355 {
2356#if EV_VERIFY >= 2
2357 ev_verify (EV_A);
2358#endif
2359
1504#ifndef _WIN32 2360#ifndef _WIN32
1505 if (expect_false (curpid)) /* penalise the forking check even more */ 2361 if (expect_false (curpid)) /* penalise the forking check even more */
1506 if (expect_false (getpid () != curpid)) 2362 if (expect_false (getpid () != curpid))
1507 { 2363 {
1508 curpid = getpid (); 2364 curpid = getpid ();
… …
1514 /* we might have forked, so queue fork handlers */ 2370 /* we might have forked, so queue fork handlers */
1515 if (expect_false (postfork)) 2371 if (expect_false (postfork))
1516 if (forkcnt) 2372 if (forkcnt)
1517 { 2373 {
1518 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2374 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1519 call_pending (EV_A); 2375 EV_INVOKE_PENDING;
1520 } 2376 }
1521#endif 2377#endif
1522 2378
2379#if EV_PREPARE_ENABLE
1523 /* queue prepare watchers (and execute them) */ 2380 /* queue prepare watchers (and execute them) */
1524 if (expect_false (preparecnt)) 2381 if (expect_false (preparecnt))
1525 { 2382 {
1526 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2383 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1527 call_pending (EV_A); 2384 EV_INVOKE_PENDING;
1528 } 2385 }
2386#endif
1529 2387
1530 if (expect_false (!activecnt)) 2388 if (expect_false (loop_done))
1531 break; 2389 break;
1532 2390
1533 /* we might have forked, so reify kernel state if necessary */ 2391 /* we might have forked, so reify kernel state if necessary */
1534 if (expect_false (postfork)) 2392 if (expect_false (postfork))
1535 loop_fork (EV_A); 2393 loop_fork (EV_A);
… …
1540 /* calculate blocking time */ 2398 /* calculate blocking time */
1541 { 2399 {
1542 ev_tstamp waittime = 0.; 2400 ev_tstamp waittime = 0.;
1543 ev_tstamp sleeptime = 0.; 2401 ev_tstamp sleeptime = 0.;
1544 2402
2403 /* remember old timestamp for io_blocktime calculation */
2404 ev_tstamp prev_mn_now = mn_now;
2405
2406 /* update time to cancel out callback processing overhead */
2407 time_update (EV_A_ 1e100);
2408
1545 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2409 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1546 { 2410 {
1547 /* update time to cancel out callback processing overhead */
1548 time_update (EV_A_ 1e100);
1549
1550 waittime = MAX_BLOCKTIME; 2411 waittime = MAX_BLOCKTIME;
1551 2412
1552 if (timercnt) 2413 if (timercnt)
1553 { 2414 {
1554 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2415 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1555 if (waittime > to) waittime = to; 2416 if (waittime > to) waittime = to;
1556 } 2417 }
1557 2418
1558#if EV_PERIODIC_ENABLE 2419#if EV_PERIODIC_ENABLE
1559 if (periodiccnt) 2420 if (periodiccnt)
1560 { 2421 {
1561 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2422 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1562 if (waittime > to) waittime = to; 2423 if (waittime > to) waittime = to;
1563 } 2424 }
1564#endif 2425#endif
1565 2426
2427 /* don't let timeouts decrease the waittime below timeout_blocktime */
1566 if (expect_false (waittime < timeout_blocktime)) 2428 if (expect_false (waittime < timeout_blocktime))
1567 waittime = timeout_blocktime; 2429 waittime = timeout_blocktime;
1568 2430
1569 sleeptime = waittime - backend_fudge; 2431 /* extra check because io_blocktime is commonly 0 */
1570
1571 if (expect_true (sleeptime > io_blocktime)) 2432 if (expect_false (io_blocktime))
1572 sleeptime = io_blocktime;
1573
1574 if (sleeptime)
1575 { 2433 {
2434 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2435
2436 if (sleeptime > waittime - backend_fudge)
2437 sleeptime = waittime - backend_fudge;
2438
2439 if (expect_true (sleeptime > 0.))
2440 {
1576 ev_sleep (sleeptime); 2441 ev_sleep (sleeptime);
1577 waittime -= sleeptime; 2442 waittime -= sleeptime;
2443 }
1578 } 2444 }
1579 } 2445 }
1580 2446
2447#if EV_FEATURE_API
1581 ++loop_count; 2448 ++loop_count;
2449#endif
2450 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1582 backend_poll (EV_A_ waittime); 2451 backend_poll (EV_A_ waittime);
2452 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1583 2453
1584 /* update ev_rt_now, do magic */ 2454 /* update ev_rt_now, do magic */
1585 time_update (EV_A_ waittime + sleeptime); 2455 time_update (EV_A_ waittime + sleeptime);
1586 } 2456 }
1587 2457
… …
1594#if EV_IDLE_ENABLE 2464#if EV_IDLE_ENABLE
1595 /* queue idle watchers unless other events are pending */ 2465 /* queue idle watchers unless other events are pending */
1596 idle_reify (EV_A); 2466 idle_reify (EV_A);
1597#endif 2467#endif
1598 2468
2469#if EV_CHECK_ENABLE
1599 /* queue check watchers, to be executed first */ 2470 /* queue check watchers, to be executed first */
1600 if (expect_false (checkcnt)) 2471 if (expect_false (checkcnt))
1601 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2472 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2473#endif
1602 2474
1603 call_pending (EV_A); 2475 EV_INVOKE_PENDING;
1604
1605 } 2476 }
1606 while (expect_true (activecnt && !loop_done)); 2477 while (expect_true (
2478 activecnt
2479 && !loop_done
2480 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2481 ));
1607 2482
1608 if (loop_done == EVUNLOOP_ONE) 2483 if (loop_done == EVBREAK_ONE)
1609 loop_done = EVUNLOOP_CANCEL; 2484 loop_done = EVBREAK_CANCEL;
1610}
1611 2485
2486#if EV_FEATURE_API
2487 --loop_depth;
2488#endif
2489}
2490
1612void 2491void
1613ev_unloop (EV_P_ int how) 2492ev_break (EV_P_ int how)
1614{ 2493{
1615 loop_done = how; 2494 loop_done = how;
1616} 2495}
1617 2496
2497void
2498ev_ref (EV_P)
2499{
2500 ++activecnt;
2501}
2502
2503void
2504ev_unref (EV_P)
2505{
2506 --activecnt;
2507}
2508
2509void
2510ev_now_update (EV_P)
2511{
2512 time_update (EV_A_ 1e100);
2513}
2514
2515void
2516ev_suspend (EV_P)
2517{
2518 ev_now_update (EV_A);
2519}
2520
2521void
2522ev_resume (EV_P)
2523{
2524 ev_tstamp mn_prev = mn_now;
2525
2526 ev_now_update (EV_A);
2527 timers_reschedule (EV_A_ mn_now - mn_prev);
2528#if EV_PERIODIC_ENABLE
2529 /* TODO: really do this? */
2530 periodics_reschedule (EV_A);
2531#endif
2532}
2533
1618/*****************************************************************************/ 2534/*****************************************************************************/
2535/* singly-linked list management, used when the expected list length is short */
1619 2536
1620void inline_size 2537inline_size void
1621wlist_add (WL *head, WL elem) 2538wlist_add (WL *head, WL elem)
1622{ 2539{
1623 elem->next = *head; 2540 elem->next = *head;
1624 *head = elem; 2541 *head = elem;
1625} 2542}
1626 2543
1627void inline_size 2544inline_size void
1628wlist_del (WL *head, WL elem) 2545wlist_del (WL *head, WL elem)
1629{ 2546{
1630 while (*head) 2547 while (*head)
1631 { 2548 {
1632 if (*head == elem) 2549 if (expect_true (*head == elem))
1633 { 2550 {
1634 *head = elem->next; 2551 *head = elem->next;
1635 return; 2552 break;
1636 } 2553 }
1637 2554
1638 head = &(*head)->next; 2555 head = &(*head)->next;
1639 } 2556 }
1640} 2557}
1641 2558
1642void inline_speed 2559/* internal, faster, version of ev_clear_pending */
2560inline_speed void
1643clear_pending (EV_P_ W w) 2561clear_pending (EV_P_ W w)
1644{ 2562{
1645 if (w->pending) 2563 if (w->pending)
1646 { 2564 {
1647 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2565 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1648 w->pending = 0; 2566 w->pending = 0;
1649 } 2567 }
1650} 2568}
1651 2569
1652int 2570int
… …
1656 int pending = w_->pending; 2574 int pending = w_->pending;
1657 2575
1658 if (expect_true (pending)) 2576 if (expect_true (pending))
1659 { 2577 {
1660 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2578 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2579 p->w = (W)&pending_w;
1661 w_->pending = 0; 2580 w_->pending = 0;
1662 p->w = 0;
1663 return p->events; 2581 return p->events;
1664 } 2582 }
1665 else 2583 else
1666 return 0; 2584 return 0;
1667} 2585}
1668 2586
1669void inline_size 2587inline_size void
1670pri_adjust (EV_P_ W w) 2588pri_adjust (EV_P_ W w)
1671{ 2589{
1672 int pri = w->priority; 2590 int pri = ev_priority (w);
1673 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2591 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1674 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2592 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1675 w->priority = pri; 2593 ev_set_priority (w, pri);
1676} 2594}
1677 2595
1678void inline_speed 2596inline_speed void
1679ev_start (EV_P_ W w, int active) 2597ev_start (EV_P_ W w, int active)
1680{ 2598{
1681 pri_adjust (EV_A_ w); 2599 pri_adjust (EV_A_ w);
1682 w->active = active; 2600 w->active = active;
1683 ev_ref (EV_A); 2601 ev_ref (EV_A);
1684} 2602}
1685 2603
1686void inline_size 2604inline_size void
1687ev_stop (EV_P_ W w) 2605ev_stop (EV_P_ W w)
1688{ 2606{
1689 ev_unref (EV_A); 2607 ev_unref (EV_A);
1690 w->active = 0; 2608 w->active = 0;
1691} 2609}
… …
1698 int fd = w->fd; 2616 int fd = w->fd;
1699 2617
1700 if (expect_false (ev_is_active (w))) 2618 if (expect_false (ev_is_active (w)))
1701 return; 2619 return;
1702 2620
1703 assert (("ev_io_start called with negative fd", fd >= 0)); 2621 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2622 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2623
2624 EV_FREQUENT_CHECK;
1704 2625
1705 ev_start (EV_A_ (W)w, 1); 2626 ev_start (EV_A_ (W)w, 1);
1706 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2627 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1707 wlist_add (&anfds[fd].head, (WL)w); 2628 wlist_add (&anfds[fd].head, (WL)w);
1708 2629
1709 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2630 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1710 w->events &= ~EV_IOFDSET; 2631 w->events &= ~EV__IOFDSET;
2632
2633 EV_FREQUENT_CHECK;
1711} 2634}
1712 2635
1713void noinline 2636void noinline
1714ev_io_stop (EV_P_ ev_io *w) 2637ev_io_stop (EV_P_ ev_io *w)
1715{ 2638{
1716 clear_pending (EV_A_ (W)w); 2639 clear_pending (EV_A_ (W)w);
1717 if (expect_false (!ev_is_active (w))) 2640 if (expect_false (!ev_is_active (w)))
1718 return; 2641 return;
1719 2642
1720 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2643 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2644
2645 EV_FREQUENT_CHECK;
1721 2646
1722 wlist_del (&anfds[w->fd].head, (WL)w); 2647 wlist_del (&anfds[w->fd].head, (WL)w);
1723 ev_stop (EV_A_ (W)w); 2648 ev_stop (EV_A_ (W)w);
1724 2649
1725 fd_change (EV_A_ w->fd, 1); 2650 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2651
2652 EV_FREQUENT_CHECK;
1726} 2653}
1727 2654
1728void noinline 2655void noinline
1729ev_timer_start (EV_P_ ev_timer *w) 2656ev_timer_start (EV_P_ ev_timer *w)
1730{ 2657{
1731 if (expect_false (ev_is_active (w))) 2658 if (expect_false (ev_is_active (w)))
1732 return; 2659 return;
1733 2660
1734 ((WT)w)->at += mn_now; 2661 ev_at (w) += mn_now;
1735 2662
1736 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2663 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1737 2664
2665 EV_FREQUENT_CHECK;
2666
2667 ++timercnt;
1738 ev_start (EV_A_ (W)w, ++timercnt); 2668 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1739 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2669 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1740 timers [timercnt - 1] = (WT)w; 2670 ANHE_w (timers [ev_active (w)]) = (WT)w;
1741 upheap (timers, timercnt - 1); 2671 ANHE_at_cache (timers [ev_active (w)]);
2672 upheap (timers, ev_active (w));
1742 2673
2674 EV_FREQUENT_CHECK;
2675
1743 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2676 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1744} 2677}
1745 2678
1746void noinline 2679void noinline
1747ev_timer_stop (EV_P_ ev_timer *w) 2680ev_timer_stop (EV_P_ ev_timer *w)
1748{ 2681{
1749 clear_pending (EV_A_ (W)w); 2682 clear_pending (EV_A_ (W)w);
1750 if (expect_false (!ev_is_active (w))) 2683 if (expect_false (!ev_is_active (w)))
1751 return; 2684 return;
1752 2685
1753 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2686 EV_FREQUENT_CHECK;
1754 2687
1755 { 2688 {
1756 int active = ((W)w)->active; 2689 int active = ev_active (w);
1757 2690
2691 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2692
2693 --timercnt;
2694
1758 if (expect_true (--active < --timercnt)) 2695 if (expect_true (active < timercnt + HEAP0))
1759 { 2696 {
1760 timers [active] = timers [timercnt]; 2697 timers [active] = timers [timercnt + HEAP0];
1761 adjustheap (timers, timercnt, active); 2698 adjustheap (timers, timercnt, active);
1762 } 2699 }
1763 } 2700 }
1764 2701
1765 ((WT)w)->at -= mn_now; 2702 ev_at (w) -= mn_now;
1766 2703
1767 ev_stop (EV_A_ (W)w); 2704 ev_stop (EV_A_ (W)w);
2705
2706 EV_FREQUENT_CHECK;
1768} 2707}
1769 2708
1770void noinline 2709void noinline
1771ev_timer_again (EV_P_ ev_timer *w) 2710ev_timer_again (EV_P_ ev_timer *w)
1772{ 2711{
2712 EV_FREQUENT_CHECK;
2713
1773 if (ev_is_active (w)) 2714 if (ev_is_active (w))
1774 { 2715 {
1775 if (w->repeat) 2716 if (w->repeat)
1776 { 2717 {
1777 ((WT)w)->at = mn_now + w->repeat; 2718 ev_at (w) = mn_now + w->repeat;
2719 ANHE_at_cache (timers [ev_active (w)]);
1778 adjustheap (timers, timercnt, ((W)w)->active - 1); 2720 adjustheap (timers, timercnt, ev_active (w));
1779 } 2721 }
1780 else 2722 else
1781 ev_timer_stop (EV_A_ w); 2723 ev_timer_stop (EV_A_ w);
1782 } 2724 }
1783 else if (w->repeat) 2725 else if (w->repeat)
1784 { 2726 {
1785 w->at = w->repeat; 2727 ev_at (w) = w->repeat;
1786 ev_timer_start (EV_A_ w); 2728 ev_timer_start (EV_A_ w);
1787 } 2729 }
2730
2731 EV_FREQUENT_CHECK;
2732}
2733
2734ev_tstamp
2735ev_timer_remaining (EV_P_ ev_timer *w)
2736{
2737 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1788} 2738}
1789 2739
1790#if EV_PERIODIC_ENABLE 2740#if EV_PERIODIC_ENABLE
1791void noinline 2741void noinline
1792ev_periodic_start (EV_P_ ev_periodic *w) 2742ev_periodic_start (EV_P_ ev_periodic *w)
1793{ 2743{
1794 if (expect_false (ev_is_active (w))) 2744 if (expect_false (ev_is_active (w)))
1795 return; 2745 return;
1796 2746
1797 if (w->reschedule_cb) 2747 if (w->reschedule_cb)
1798 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2748 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1799 else if (w->interval) 2749 else if (w->interval)
1800 { 2750 {
1801 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2751 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1802 /* this formula differs from the one in periodic_reify because we do not always round up */ 2752 /* this formula differs from the one in periodic_reify because we do not always round up */
1803 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2753 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1804 } 2754 }
1805 else 2755 else
1806 ((WT)w)->at = w->offset; 2756 ev_at (w) = w->offset;
1807 2757
2758 EV_FREQUENT_CHECK;
2759
2760 ++periodiccnt;
1808 ev_start (EV_A_ (W)w, ++periodiccnt); 2761 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1809 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2762 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1810 periodics [periodiccnt - 1] = (WT)w; 2763 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1811 upheap (periodics, periodiccnt - 1); 2764 ANHE_at_cache (periodics [ev_active (w)]);
2765 upheap (periodics, ev_active (w));
1812 2766
2767 EV_FREQUENT_CHECK;
2768
1813 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2769 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1814} 2770}
1815 2771
1816void noinline 2772void noinline
1817ev_periodic_stop (EV_P_ ev_periodic *w) 2773ev_periodic_stop (EV_P_ ev_periodic *w)
1818{ 2774{
1819 clear_pending (EV_A_ (W)w); 2775 clear_pending (EV_A_ (W)w);
1820 if (expect_false (!ev_is_active (w))) 2776 if (expect_false (!ev_is_active (w)))
1821 return; 2777 return;
1822 2778
1823 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2779 EV_FREQUENT_CHECK;
1824 2780
1825 { 2781 {
1826 int active = ((W)w)->active; 2782 int active = ev_active (w);
1827 2783
2784 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2785
2786 --periodiccnt;
2787
1828 if (expect_true (--active < --periodiccnt)) 2788 if (expect_true (active < periodiccnt + HEAP0))
1829 { 2789 {
1830 periodics [active] = periodics [periodiccnt]; 2790 periodics [active] = periodics [periodiccnt + HEAP0];
1831 adjustheap (periodics, periodiccnt, active); 2791 adjustheap (periodics, periodiccnt, active);
1832 } 2792 }
1833 } 2793 }
1834 2794
1835 ev_stop (EV_A_ (W)w); 2795 ev_stop (EV_A_ (W)w);
2796
2797 EV_FREQUENT_CHECK;
1836} 2798}
1837 2799
1838void noinline 2800void noinline
1839ev_periodic_again (EV_P_ ev_periodic *w) 2801ev_periodic_again (EV_P_ ev_periodic *w)
1840{ 2802{
… …
1846 2808
1847#ifndef SA_RESTART 2809#ifndef SA_RESTART
1848# define SA_RESTART 0 2810# define SA_RESTART 0
1849#endif 2811#endif
1850 2812
2813#if EV_SIGNAL_ENABLE
2814
1851void noinline 2815void noinline
1852ev_signal_start (EV_P_ ev_signal *w) 2816ev_signal_start (EV_P_ ev_signal *w)
1853{ 2817{
1854#if EV_MULTIPLICITY
1855 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1856#endif
1857 if (expect_false (ev_is_active (w))) 2818 if (expect_false (ev_is_active (w)))
1858 return; 2819 return;
1859 2820
1860 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2821 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1861 2822
2823#if EV_MULTIPLICITY
2824 assert (("libev: a signal must not be attached to two different loops",
2825 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2826
2827 signals [w->signum - 1].loop = EV_A;
2828#endif
2829
2830 EV_FREQUENT_CHECK;
2831
2832#if EV_USE_SIGNALFD
2833 if (sigfd == -2)
1862 { 2834 {
1863#ifndef _WIN32 2835 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1864 sigset_t full, prev; 2836 if (sigfd < 0 && errno == EINVAL)
1865 sigfillset (&full); 2837 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1866 sigprocmask (SIG_SETMASK, &full, &prev);
1867#endif
1868 2838
1869 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2839 if (sigfd >= 0)
2840 {
2841 fd_intern (sigfd); /* doing it twice will not hurt */
1870 2842
1871#ifndef _WIN32 2843 sigemptyset (&sigfd_set);
1872 sigprocmask (SIG_SETMASK, &prev, 0); 2844
1873#endif 2845 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2846 ev_set_priority (&sigfd_w, EV_MAXPRI);
2847 ev_io_start (EV_A_ &sigfd_w);
2848 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2849 }
1874 } 2850 }
2851
2852 if (sigfd >= 0)
2853 {
2854 /* TODO: check .head */
2855 sigaddset (&sigfd_set, w->signum);
2856 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2857
2858 signalfd (sigfd, &sigfd_set, 0);
2859 }
2860#endif
1875 2861
1876 ev_start (EV_A_ (W)w, 1); 2862 ev_start (EV_A_ (W)w, 1);
1877 wlist_add (&signals [w->signum - 1].head, (WL)w); 2863 wlist_add (&signals [w->signum - 1].head, (WL)w);
1878 2864
1879 if (!((WL)w)->next) 2865 if (!((WL)w)->next)
2866# if EV_USE_SIGNALFD
2867 if (sigfd < 0) /*TODO*/
2868# endif
1880 { 2869 {
1881#if _WIN32 2870# ifdef _WIN32
2871 evpipe_init (EV_A);
2872
1882 signal (w->signum, sighandler); 2873 signal (w->signum, ev_sighandler);
1883#else 2874# else
1884 struct sigaction sa; 2875 struct sigaction sa;
2876
2877 evpipe_init (EV_A);
2878
1885 sa.sa_handler = sighandler; 2879 sa.sa_handler = ev_sighandler;
1886 sigfillset (&sa.sa_mask); 2880 sigfillset (&sa.sa_mask);
1887 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2881 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1888 sigaction (w->signum, &sa, 0); 2882 sigaction (w->signum, &sa, 0);
2883
2884 sigemptyset (&sa.sa_mask);
2885 sigaddset (&sa.sa_mask, w->signum);
2886 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
1889#endif 2887#endif
1890 } 2888 }
2889
2890 EV_FREQUENT_CHECK;
1891} 2891}
1892 2892
1893void noinline 2893void noinline
1894ev_signal_stop (EV_P_ ev_signal *w) 2894ev_signal_stop (EV_P_ ev_signal *w)
1895{ 2895{
1896 clear_pending (EV_A_ (W)w); 2896 clear_pending (EV_A_ (W)w);
1897 if (expect_false (!ev_is_active (w))) 2897 if (expect_false (!ev_is_active (w)))
1898 return; 2898 return;
1899 2899
2900 EV_FREQUENT_CHECK;
2901
1900 wlist_del (&signals [w->signum - 1].head, (WL)w); 2902 wlist_del (&signals [w->signum - 1].head, (WL)w);
1901 ev_stop (EV_A_ (W)w); 2903 ev_stop (EV_A_ (W)w);
1902 2904
1903 if (!signals [w->signum - 1].head) 2905 if (!signals [w->signum - 1].head)
2906 {
2907#if EV_MULTIPLICITY
2908 signals [w->signum - 1].loop = 0; /* unattach from signal */
2909#endif
2910#if EV_USE_SIGNALFD
2911 if (sigfd >= 0)
2912 {
2913 sigset_t ss;
2914
2915 sigemptyset (&ss);
2916 sigaddset (&ss, w->signum);
2917 sigdelset (&sigfd_set, w->signum);
2918
2919 signalfd (sigfd, &sigfd_set, 0);
2920 sigprocmask (SIG_UNBLOCK, &ss, 0);
2921 }
2922 else
2923#endif
1904 signal (w->signum, SIG_DFL); 2924 signal (w->signum, SIG_DFL);
2925 }
2926
2927 EV_FREQUENT_CHECK;
1905} 2928}
2929
2930#endif
2931
2932#if EV_CHILD_ENABLE
1906 2933
1907void 2934void
1908ev_child_start (EV_P_ ev_child *w) 2935ev_child_start (EV_P_ ev_child *w)
1909{ 2936{
1910#if EV_MULTIPLICITY 2937#if EV_MULTIPLICITY
1911 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2938 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1912#endif 2939#endif
1913 if (expect_false (ev_is_active (w))) 2940 if (expect_false (ev_is_active (w)))
1914 return; 2941 return;
1915 2942
2943 EV_FREQUENT_CHECK;
2944
1916 ev_start (EV_A_ (W)w, 1); 2945 ev_start (EV_A_ (W)w, 1);
1917 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2946 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2947
2948 EV_FREQUENT_CHECK;
1918} 2949}
1919 2950
1920void 2951void
1921ev_child_stop (EV_P_ ev_child *w) 2952ev_child_stop (EV_P_ ev_child *w)
1922{ 2953{
1923 clear_pending (EV_A_ (W)w); 2954 clear_pending (EV_A_ (W)w);
1924 if (expect_false (!ev_is_active (w))) 2955 if (expect_false (!ev_is_active (w)))
1925 return; 2956 return;
1926 2957
2958 EV_FREQUENT_CHECK;
2959
1927 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2960 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1928 ev_stop (EV_A_ (W)w); 2961 ev_stop (EV_A_ (W)w);
2962
2963 EV_FREQUENT_CHECK;
1929} 2964}
2965
2966#endif
1930 2967
1931#if EV_STAT_ENABLE 2968#if EV_STAT_ENABLE
1932 2969
1933# ifdef _WIN32 2970# ifdef _WIN32
1934# undef lstat 2971# undef lstat
1935# define lstat(a,b) _stati64 (a,b) 2972# define lstat(a,b) _stati64 (a,b)
1936# endif 2973# endif
1937 2974
1938#define DEF_STAT_INTERVAL 5.0074891 2975#define DEF_STAT_INTERVAL 5.0074891
2976#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1939#define MIN_STAT_INTERVAL 0.1074891 2977#define MIN_STAT_INTERVAL 0.1074891
1940 2978
1941static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2979static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1942 2980
1943#if EV_USE_INOTIFY 2981#if EV_USE_INOTIFY
1944# define EV_INOTIFY_BUFSIZE 8192 2982
2983/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2984# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1945 2985
1946static void noinline 2986static void noinline
1947infy_add (EV_P_ ev_stat *w) 2987infy_add (EV_P_ ev_stat *w)
1948{ 2988{
1949 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); 2989 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);
1950 2990
1951 if (w->wd < 0) 2991 if (w->wd >= 0)
2992 {
2993 struct statfs sfs;
2994
2995 /* now local changes will be tracked by inotify, but remote changes won't */
2996 /* unless the filesystem is known to be local, we therefore still poll */
2997 /* also do poll on <2.6.25, but with normal frequency */
2998
2999 if (!fs_2625)
3000 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3001 else if (!statfs (w->path, &sfs)
3002 && (sfs.f_type == 0x1373 /* devfs */
3003 || sfs.f_type == 0xEF53 /* ext2/3 */
3004 || sfs.f_type == 0x3153464a /* jfs */
3005 || sfs.f_type == 0x52654973 /* reiser3 */
3006 || sfs.f_type == 0x01021994 /* tempfs */
3007 || sfs.f_type == 0x58465342 /* xfs */))
3008 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3009 else
3010 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1952 { 3011 }
1953 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3012 else
3013 {
3014 /* can't use inotify, continue to stat */
3015 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1954 3016
1955 /* monitor some parent directory for speedup hints */ 3017 /* if path is not there, monitor some parent directory for speedup hints */
3018 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3019 /* but an efficiency issue only */
1956 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3020 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1957 { 3021 {
1958 char path [4096]; 3022 char path [4096];
1959 strcpy (path, w->path); 3023 strcpy (path, w->path);
1960 3024
… …
1963 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3027 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1964 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3028 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1965 3029
1966 char *pend = strrchr (path, '/'); 3030 char *pend = strrchr (path, '/');
1967 3031
1968 if (!pend) 3032 if (!pend || pend == path)
1969 break; /* whoops, no '/', complain to your admin */ 3033 break;
1970 3034
1971 *pend = 0; 3035 *pend = 0;
1972 w->wd = inotify_add_watch (fs_fd, path, mask); 3036 w->wd = inotify_add_watch (fs_fd, path, mask);
1973 } 3037 }
1974 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3038 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1975 } 3039 }
1976 } 3040 }
1977 else
1978 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1979 3041
1980 if (w->wd >= 0) 3042 if (w->wd >= 0)
1981 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3043 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3044
3045 /* now re-arm timer, if required */
3046 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3047 ev_timer_again (EV_A_ &w->timer);
3048 if (ev_is_active (&w->timer)) ev_unref (EV_A);
1982} 3049}
1983 3050
1984static void noinline 3051static void noinline
1985infy_del (EV_P_ ev_stat *w) 3052infy_del (EV_P_ ev_stat *w)
1986{ 3053{
… …
1989 3056
1990 if (wd < 0) 3057 if (wd < 0)
1991 return; 3058 return;
1992 3059
1993 w->wd = -2; 3060 w->wd = -2;
1994 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3061 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
1995 wlist_del (&fs_hash [slot].head, (WL)w); 3062 wlist_del (&fs_hash [slot].head, (WL)w);
1996 3063
1997 /* remove this watcher, if others are watching it, they will rearm */ 3064 /* remove this watcher, if others are watching it, they will rearm */
1998 inotify_rm_watch (fs_fd, wd); 3065 inotify_rm_watch (fs_fd, wd);
1999} 3066}
2000 3067
2001static void noinline 3068static void noinline
2002infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3069infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2003{ 3070{
2004 if (slot < 0) 3071 if (slot < 0)
2005 /* overflow, need to check for all hahs slots */ 3072 /* overflow, need to check for all hash slots */
2006 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3073 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2007 infy_wd (EV_A_ slot, wd, ev); 3074 infy_wd (EV_A_ slot, wd, ev);
2008 else 3075 else
2009 { 3076 {
2010 WL w_; 3077 WL w_;
2011 3078
2012 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3079 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2013 { 3080 {
2014 ev_stat *w = (ev_stat *)w_; 3081 ev_stat *w = (ev_stat *)w_;
2015 w_ = w_->next; /* lets us remove this watcher and all before it */ 3082 w_ = w_->next; /* lets us remove this watcher and all before it */
2016 3083
2017 if (w->wd == wd || wd == -1) 3084 if (w->wd == wd || wd == -1)
2018 { 3085 {
2019 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3086 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2020 { 3087 {
3088 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2021 w->wd = -1; 3089 w->wd = -1;
2022 infy_add (EV_A_ w); /* re-add, no matter what */ 3090 infy_add (EV_A_ w); /* re-add, no matter what */
2023 } 3091 }
2024 3092
2025 stat_timer_cb (EV_A_ &w->timer, 0); 3093 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2030 3098
2031static void 3099static void
2032infy_cb (EV_P_ ev_io *w, int revents) 3100infy_cb (EV_P_ ev_io *w, int revents)
2033{ 3101{
2034 char buf [EV_INOTIFY_BUFSIZE]; 3102 char buf [EV_INOTIFY_BUFSIZE];
2035 struct inotify_event *ev = (struct inotify_event *)buf;
2036 int ofs; 3103 int ofs;
2037 int len = read (fs_fd, buf, sizeof (buf)); 3104 int len = read (fs_fd, buf, sizeof (buf));
2038 3105
2039 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3106 for (ofs = 0; ofs < len; )
3107 {
3108 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2040 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3109 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3110 ofs += sizeof (struct inotify_event) + ev->len;
3111 }
2041} 3112}
2042 3113
2043void inline_size 3114inline_size void
3115ev_check_2625 (EV_P)
3116{
3117 /* kernels < 2.6.25 are borked
3118 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3119 */
3120 if (ev_linux_version () < 0x020619)
3121 return;
3122
3123 fs_2625 = 1;
3124}
3125
3126inline_size int
3127infy_newfd (void)
3128{
3129#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3130 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3131 if (fd >= 0)
3132 return fd;
3133#endif
3134 return inotify_init ();
3135}
3136
3137inline_size void
2044infy_init (EV_P) 3138infy_init (EV_P)
2045{ 3139{
2046 if (fs_fd != -2) 3140 if (fs_fd != -2)
2047 return; 3141 return;
2048 3142
3143 fs_fd = -1;
3144
3145 ev_check_2625 (EV_A);
3146
2049 fs_fd = inotify_init (); 3147 fs_fd = infy_newfd ();
2050 3148
2051 if (fs_fd >= 0) 3149 if (fs_fd >= 0)
2052 { 3150 {
3151 fd_intern (fs_fd);
2053 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3152 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2054 ev_set_priority (&fs_w, EV_MAXPRI); 3153 ev_set_priority (&fs_w, EV_MAXPRI);
2055 ev_io_start (EV_A_ &fs_w); 3154 ev_io_start (EV_A_ &fs_w);
3155 ev_unref (EV_A);
2056 } 3156 }
2057} 3157}
2058 3158
2059void inline_size 3159inline_size void
2060infy_fork (EV_P) 3160infy_fork (EV_P)
2061{ 3161{
2062 int slot; 3162 int slot;
2063 3163
2064 if (fs_fd < 0) 3164 if (fs_fd < 0)
2065 return; 3165 return;
2066 3166
3167 ev_ref (EV_A);
3168 ev_io_stop (EV_A_ &fs_w);
2067 close (fs_fd); 3169 close (fs_fd);
2068 fs_fd = inotify_init (); 3170 fs_fd = infy_newfd ();
2069 3171
3172 if (fs_fd >= 0)
3173 {
3174 fd_intern (fs_fd);
3175 ev_io_set (&fs_w, fs_fd, EV_READ);
3176 ev_io_start (EV_A_ &fs_w);
3177 ev_unref (EV_A);
3178 }
3179
2070 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3180 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2071 { 3181 {
2072 WL w_ = fs_hash [slot].head; 3182 WL w_ = fs_hash [slot].head;
2073 fs_hash [slot].head = 0; 3183 fs_hash [slot].head = 0;
2074 3184
2075 while (w_) 3185 while (w_)
… …
2080 w->wd = -1; 3190 w->wd = -1;
2081 3191
2082 if (fs_fd >= 0) 3192 if (fs_fd >= 0)
2083 infy_add (EV_A_ w); /* re-add, no matter what */ 3193 infy_add (EV_A_ w); /* re-add, no matter what */
2084 else 3194 else
3195 {
3196 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3197 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2085 ev_timer_start (EV_A_ &w->timer); 3198 ev_timer_again (EV_A_ &w->timer);
3199 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3200 }
2086 } 3201 }
2087
2088 } 3202 }
2089} 3203}
2090 3204
3205#endif
3206
3207#ifdef _WIN32
3208# define EV_LSTAT(p,b) _stati64 (p, b)
3209#else
3210# define EV_LSTAT(p,b) lstat (p, b)
2091#endif 3211#endif
2092 3212
2093void 3213void
2094ev_stat_stat (EV_P_ ev_stat *w) 3214ev_stat_stat (EV_P_ ev_stat *w)
2095{ 3215{
… …
2102static void noinline 3222static void noinline
2103stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3223stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2104{ 3224{
2105 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3225 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2106 3226
2107 /* we copy this here each the time so that */ 3227 ev_statdata prev = w->attr;
2108 /* prev has the old value when the callback gets invoked */
2109 w->prev = w->attr;
2110 ev_stat_stat (EV_A_ w); 3228 ev_stat_stat (EV_A_ w);
2111 3229
2112 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3230 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2113 if ( 3231 if (
2114 w->prev.st_dev != w->attr.st_dev 3232 prev.st_dev != w->attr.st_dev
2115 || w->prev.st_ino != w->attr.st_ino 3233 || prev.st_ino != w->attr.st_ino
2116 || w->prev.st_mode != w->attr.st_mode 3234 || prev.st_mode != w->attr.st_mode
2117 || w->prev.st_nlink != w->attr.st_nlink 3235 || prev.st_nlink != w->attr.st_nlink
2118 || w->prev.st_uid != w->attr.st_uid 3236 || prev.st_uid != w->attr.st_uid
2119 || w->prev.st_gid != w->attr.st_gid 3237 || prev.st_gid != w->attr.st_gid
2120 || w->prev.st_rdev != w->attr.st_rdev 3238 || prev.st_rdev != w->attr.st_rdev
2121 || w->prev.st_size != w->attr.st_size 3239 || prev.st_size != w->attr.st_size
2122 || w->prev.st_atime != w->attr.st_atime 3240 || prev.st_atime != w->attr.st_atime
2123 || w->prev.st_mtime != w->attr.st_mtime 3241 || prev.st_mtime != w->attr.st_mtime
2124 || w->prev.st_ctime != w->attr.st_ctime 3242 || prev.st_ctime != w->attr.st_ctime
2125 ) { 3243 ) {
3244 /* we only update w->prev on actual differences */
3245 /* in case we test more often than invoke the callback, */
3246 /* to ensure that prev is always different to attr */
3247 w->prev = prev;
3248
2126 #if EV_USE_INOTIFY 3249 #if EV_USE_INOTIFY
3250 if (fs_fd >= 0)
3251 {
2127 infy_del (EV_A_ w); 3252 infy_del (EV_A_ w);
2128 infy_add (EV_A_ w); 3253 infy_add (EV_A_ w);
2129 ev_stat_stat (EV_A_ w); /* avoid race... */ 3254 ev_stat_stat (EV_A_ w); /* avoid race... */
3255 }
2130 #endif 3256 #endif
2131 3257
2132 ev_feed_event (EV_A_ w, EV_STAT); 3258 ev_feed_event (EV_A_ w, EV_STAT);
2133 } 3259 }
2134} 3260}
… …
2137ev_stat_start (EV_P_ ev_stat *w) 3263ev_stat_start (EV_P_ ev_stat *w)
2138{ 3264{
2139 if (expect_false (ev_is_active (w))) 3265 if (expect_false (ev_is_active (w)))
2140 return; 3266 return;
2141 3267
2142 /* since we use memcmp, we need to clear any padding data etc. */
2143 memset (&w->prev, 0, sizeof (ev_statdata));
2144 memset (&w->attr, 0, sizeof (ev_statdata));
2145
2146 ev_stat_stat (EV_A_ w); 3268 ev_stat_stat (EV_A_ w);
2147 3269
3270 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2148 if (w->interval < MIN_STAT_INTERVAL) 3271 w->interval = MIN_STAT_INTERVAL;
2149 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2150 3272
2151 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3273 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2152 ev_set_priority (&w->timer, ev_priority (w)); 3274 ev_set_priority (&w->timer, ev_priority (w));
2153 3275
2154#if EV_USE_INOTIFY 3276#if EV_USE_INOTIFY
2155 infy_init (EV_A); 3277 infy_init (EV_A);
2156 3278
2157 if (fs_fd >= 0) 3279 if (fs_fd >= 0)
2158 infy_add (EV_A_ w); 3280 infy_add (EV_A_ w);
2159 else 3281 else
2160#endif 3282#endif
3283 {
2161 ev_timer_start (EV_A_ &w->timer); 3284 ev_timer_again (EV_A_ &w->timer);
3285 ev_unref (EV_A);
3286 }
2162 3287
2163 ev_start (EV_A_ (W)w, 1); 3288 ev_start (EV_A_ (W)w, 1);
3289
3290 EV_FREQUENT_CHECK;
2164} 3291}
2165 3292
2166void 3293void
2167ev_stat_stop (EV_P_ ev_stat *w) 3294ev_stat_stop (EV_P_ ev_stat *w)
2168{ 3295{
2169 clear_pending (EV_A_ (W)w); 3296 clear_pending (EV_A_ (W)w);
2170 if (expect_false (!ev_is_active (w))) 3297 if (expect_false (!ev_is_active (w)))
2171 return; 3298 return;
2172 3299
3300 EV_FREQUENT_CHECK;
3301
2173#if EV_USE_INOTIFY 3302#if EV_USE_INOTIFY
2174 infy_del (EV_A_ w); 3303 infy_del (EV_A_ w);
2175#endif 3304#endif
3305
3306 if (ev_is_active (&w->timer))
3307 {
3308 ev_ref (EV_A);
2176 ev_timer_stop (EV_A_ &w->timer); 3309 ev_timer_stop (EV_A_ &w->timer);
3310 }
2177 3311
2178 ev_stop (EV_A_ (W)w); 3312 ev_stop (EV_A_ (W)w);
3313
3314 EV_FREQUENT_CHECK;
2179} 3315}
2180#endif 3316#endif
2181 3317
2182#if EV_IDLE_ENABLE 3318#if EV_IDLE_ENABLE
2183void 3319void
… …
2185{ 3321{
2186 if (expect_false (ev_is_active (w))) 3322 if (expect_false (ev_is_active (w)))
2187 return; 3323 return;
2188 3324
2189 pri_adjust (EV_A_ (W)w); 3325 pri_adjust (EV_A_ (W)w);
3326
3327 EV_FREQUENT_CHECK;
2190 3328
2191 { 3329 {
2192 int active = ++idlecnt [ABSPRI (w)]; 3330 int active = ++idlecnt [ABSPRI (w)];
2193 3331
2194 ++idleall; 3332 ++idleall;
2195 ev_start (EV_A_ (W)w, active); 3333 ev_start (EV_A_ (W)w, active);
2196 3334
2197 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3335 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2198 idles [ABSPRI (w)][active - 1] = w; 3336 idles [ABSPRI (w)][active - 1] = w;
2199 } 3337 }
3338
3339 EV_FREQUENT_CHECK;
2200} 3340}
2201 3341
2202void 3342void
2203ev_idle_stop (EV_P_ ev_idle *w) 3343ev_idle_stop (EV_P_ ev_idle *w)
2204{ 3344{
2205 clear_pending (EV_A_ (W)w); 3345 clear_pending (EV_A_ (W)w);
2206 if (expect_false (!ev_is_active (w))) 3346 if (expect_false (!ev_is_active (w)))
2207 return; 3347 return;
2208 3348
3349 EV_FREQUENT_CHECK;
3350
2209 { 3351 {
2210 int active = ((W)w)->active; 3352 int active = ev_active (w);
2211 3353
2212 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3354 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2213 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3355 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2214 3356
2215 ev_stop (EV_A_ (W)w); 3357 ev_stop (EV_A_ (W)w);
2216 --idleall; 3358 --idleall;
2217 } 3359 }
2218}
2219#endif
2220 3360
3361 EV_FREQUENT_CHECK;
3362}
3363#endif
3364
3365#if EV_PREPARE_ENABLE
2221void 3366void
2222ev_prepare_start (EV_P_ ev_prepare *w) 3367ev_prepare_start (EV_P_ ev_prepare *w)
2223{ 3368{
2224 if (expect_false (ev_is_active (w))) 3369 if (expect_false (ev_is_active (w)))
2225 return; 3370 return;
3371
3372 EV_FREQUENT_CHECK;
2226 3373
2227 ev_start (EV_A_ (W)w, ++preparecnt); 3374 ev_start (EV_A_ (W)w, ++preparecnt);
2228 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3375 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2229 prepares [preparecnt - 1] = w; 3376 prepares [preparecnt - 1] = w;
3377
3378 EV_FREQUENT_CHECK;
2230} 3379}
2231 3380
2232void 3381void
2233ev_prepare_stop (EV_P_ ev_prepare *w) 3382ev_prepare_stop (EV_P_ ev_prepare *w)
2234{ 3383{
2235 clear_pending (EV_A_ (W)w); 3384 clear_pending (EV_A_ (W)w);
2236 if (expect_false (!ev_is_active (w))) 3385 if (expect_false (!ev_is_active (w)))
2237 return; 3386 return;
2238 3387
3388 EV_FREQUENT_CHECK;
3389
2239 { 3390 {
2240 int active = ((W)w)->active; 3391 int active = ev_active (w);
3392
2241 prepares [active - 1] = prepares [--preparecnt]; 3393 prepares [active - 1] = prepares [--preparecnt];
2242 ((W)prepares [active - 1])->active = active; 3394 ev_active (prepares [active - 1]) = active;
2243 } 3395 }
2244 3396
2245 ev_stop (EV_A_ (W)w); 3397 ev_stop (EV_A_ (W)w);
2246}
2247 3398
3399 EV_FREQUENT_CHECK;
3400}
3401#endif
3402
3403#if EV_CHECK_ENABLE
2248void 3404void
2249ev_check_start (EV_P_ ev_check *w) 3405ev_check_start (EV_P_ ev_check *w)
2250{ 3406{
2251 if (expect_false (ev_is_active (w))) 3407 if (expect_false (ev_is_active (w)))
2252 return; 3408 return;
3409
3410 EV_FREQUENT_CHECK;
2253 3411
2254 ev_start (EV_A_ (W)w, ++checkcnt); 3412 ev_start (EV_A_ (W)w, ++checkcnt);
2255 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3413 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2256 checks [checkcnt - 1] = w; 3414 checks [checkcnt - 1] = w;
3415
3416 EV_FREQUENT_CHECK;
2257} 3417}
2258 3418
2259void 3419void
2260ev_check_stop (EV_P_ ev_check *w) 3420ev_check_stop (EV_P_ ev_check *w)
2261{ 3421{
2262 clear_pending (EV_A_ (W)w); 3422 clear_pending (EV_A_ (W)w);
2263 if (expect_false (!ev_is_active (w))) 3423 if (expect_false (!ev_is_active (w)))
2264 return; 3424 return;
2265 3425
3426 EV_FREQUENT_CHECK;
3427
2266 { 3428 {
2267 int active = ((W)w)->active; 3429 int active = ev_active (w);
3430
2268 checks [active - 1] = checks [--checkcnt]; 3431 checks [active - 1] = checks [--checkcnt];
2269 ((W)checks [active - 1])->active = active; 3432 ev_active (checks [active - 1]) = active;
2270 } 3433 }
2271 3434
2272 ev_stop (EV_A_ (W)w); 3435 ev_stop (EV_A_ (W)w);
3436
3437 EV_FREQUENT_CHECK;
2273} 3438}
3439#endif
2274 3440
2275#if EV_EMBED_ENABLE 3441#if EV_EMBED_ENABLE
2276void noinline 3442void noinline
2277ev_embed_sweep (EV_P_ ev_embed *w) 3443ev_embed_sweep (EV_P_ ev_embed *w)
2278{ 3444{
2279 ev_loop (w->other, EVLOOP_NONBLOCK); 3445 ev_run (w->other, EVRUN_NOWAIT);
2280} 3446}
2281 3447
2282static void 3448static void
2283embed_io_cb (EV_P_ ev_io *io, int revents) 3449embed_io_cb (EV_P_ ev_io *io, int revents)
2284{ 3450{
2285 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3451 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2286 3452
2287 if (ev_cb (w)) 3453 if (ev_cb (w))
2288 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3454 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2289 else 3455 else
2290 ev_loop (w->other, EVLOOP_NONBLOCK); 3456 ev_run (w->other, EVRUN_NOWAIT);
2291} 3457}
2292 3458
2293static void 3459static void
2294embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3460embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2295{ 3461{
2296 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3462 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2297 3463
2298 { 3464 {
2299 struct ev_loop *loop = w->other; 3465 EV_P = w->other;
2300 3466
2301 while (fdchangecnt) 3467 while (fdchangecnt)
2302 { 3468 {
2303 fd_reify (EV_A); 3469 fd_reify (EV_A);
2304 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3470 ev_run (EV_A_ EVRUN_NOWAIT);
2305 } 3471 }
2306 } 3472 }
3473}
3474
3475static void
3476embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3477{
3478 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3479
3480 ev_embed_stop (EV_A_ w);
3481
3482 {
3483 EV_P = w->other;
3484
3485 ev_loop_fork (EV_A);
3486 ev_run (EV_A_ EVRUN_NOWAIT);
3487 }
3488
3489 ev_embed_start (EV_A_ w);
2307} 3490}
2308 3491
2309#if 0 3492#if 0
2310static void 3493static void
2311embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3494embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2319{ 3502{
2320 if (expect_false (ev_is_active (w))) 3503 if (expect_false (ev_is_active (w)))
2321 return; 3504 return;
2322 3505
2323 { 3506 {
2324 struct ev_loop *loop = w->other; 3507 EV_P = w->other;
2325 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3508 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2326 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3509 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2327 } 3510 }
3511
3512 EV_FREQUENT_CHECK;
2328 3513
2329 ev_set_priority (&w->io, ev_priority (w)); 3514 ev_set_priority (&w->io, ev_priority (w));
2330 ev_io_start (EV_A_ &w->io); 3515 ev_io_start (EV_A_ &w->io);
2331 3516
2332 ev_prepare_init (&w->prepare, embed_prepare_cb); 3517 ev_prepare_init (&w->prepare, embed_prepare_cb);
2333 ev_set_priority (&w->prepare, EV_MINPRI); 3518 ev_set_priority (&w->prepare, EV_MINPRI);
2334 ev_prepare_start (EV_A_ &w->prepare); 3519 ev_prepare_start (EV_A_ &w->prepare);
2335 3520
3521 ev_fork_init (&w->fork, embed_fork_cb);
3522 ev_fork_start (EV_A_ &w->fork);
3523
2336 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3524 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2337 3525
2338 ev_start (EV_A_ (W)w, 1); 3526 ev_start (EV_A_ (W)w, 1);
3527
3528 EV_FREQUENT_CHECK;
2339} 3529}
2340 3530
2341void 3531void
2342ev_embed_stop (EV_P_ ev_embed *w) 3532ev_embed_stop (EV_P_ ev_embed *w)
2343{ 3533{
2344 clear_pending (EV_A_ (W)w); 3534 clear_pending (EV_A_ (W)w);
2345 if (expect_false (!ev_is_active (w))) 3535 if (expect_false (!ev_is_active (w)))
2346 return; 3536 return;
2347 3537
3538 EV_FREQUENT_CHECK;
3539
2348 ev_io_stop (EV_A_ &w->io); 3540 ev_io_stop (EV_A_ &w->io);
2349 ev_prepare_stop (EV_A_ &w->prepare); 3541 ev_prepare_stop (EV_A_ &w->prepare);
3542 ev_fork_stop (EV_A_ &w->fork);
2350 3543
2351 ev_stop (EV_A_ (W)w); 3544 ev_stop (EV_A_ (W)w);
3545
3546 EV_FREQUENT_CHECK;
2352} 3547}
2353#endif 3548#endif
2354 3549
2355#if EV_FORK_ENABLE 3550#if EV_FORK_ENABLE
2356void 3551void
2357ev_fork_start (EV_P_ ev_fork *w) 3552ev_fork_start (EV_P_ ev_fork *w)
2358{ 3553{
2359 if (expect_false (ev_is_active (w))) 3554 if (expect_false (ev_is_active (w)))
2360 return; 3555 return;
3556
3557 EV_FREQUENT_CHECK;
2361 3558
2362 ev_start (EV_A_ (W)w, ++forkcnt); 3559 ev_start (EV_A_ (W)w, ++forkcnt);
2363 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3560 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2364 forks [forkcnt - 1] = w; 3561 forks [forkcnt - 1] = w;
3562
3563 EV_FREQUENT_CHECK;
2365} 3564}
2366 3565
2367void 3566void
2368ev_fork_stop (EV_P_ ev_fork *w) 3567ev_fork_stop (EV_P_ ev_fork *w)
2369{ 3568{
2370 clear_pending (EV_A_ (W)w); 3569 clear_pending (EV_A_ (W)w);
2371 if (expect_false (!ev_is_active (w))) 3570 if (expect_false (!ev_is_active (w)))
2372 return; 3571 return;
2373 3572
3573 EV_FREQUENT_CHECK;
3574
2374 { 3575 {
2375 int active = ((W)w)->active; 3576 int active = ev_active (w);
3577
2376 forks [active - 1] = forks [--forkcnt]; 3578 forks [active - 1] = forks [--forkcnt];
2377 ((W)forks [active - 1])->active = active; 3579 ev_active (forks [active - 1]) = active;
2378 } 3580 }
2379 3581
2380 ev_stop (EV_A_ (W)w); 3582 ev_stop (EV_A_ (W)w);
3583
3584 EV_FREQUENT_CHECK;
3585}
3586#endif
3587
3588#if EV_CLEANUP_ENABLE
3589void
3590ev_cleanup_start (EV_P_ ev_cleanup *w)
3591{
3592 if (expect_false (ev_is_active (w)))
3593 return;
3594
3595 EV_FREQUENT_CHECK;
3596
3597 ev_start (EV_A_ (W)w, ++cleanupcnt);
3598 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3599 cleanups [cleanupcnt - 1] = w;
3600
3601 /* cleanup watchers should never keep a refcount on the loop */
3602 ev_unref (EV_A);
3603 EV_FREQUENT_CHECK;
3604}
3605
3606void
3607ev_cleanup_stop (EV_P_ ev_cleanup *w)
3608{
3609 clear_pending (EV_A_ (W)w);
3610 if (expect_false (!ev_is_active (w)))
3611 return;
3612
3613 EV_FREQUENT_CHECK;
3614 ev_ref (EV_A);
3615
3616 {
3617 int active = ev_active (w);
3618
3619 cleanups [active - 1] = cleanups [--cleanupcnt];
3620 ev_active (cleanups [active - 1]) = active;
3621 }
3622
3623 ev_stop (EV_A_ (W)w);
3624
3625 EV_FREQUENT_CHECK;
3626}
3627#endif
3628
3629#if EV_ASYNC_ENABLE
3630void
3631ev_async_start (EV_P_ ev_async *w)
3632{
3633 if (expect_false (ev_is_active (w)))
3634 return;
3635
3636 w->sent = 0;
3637
3638 evpipe_init (EV_A);
3639
3640 EV_FREQUENT_CHECK;
3641
3642 ev_start (EV_A_ (W)w, ++asynccnt);
3643 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3644 asyncs [asynccnt - 1] = w;
3645
3646 EV_FREQUENT_CHECK;
3647}
3648
3649void
3650ev_async_stop (EV_P_ ev_async *w)
3651{
3652 clear_pending (EV_A_ (W)w);
3653 if (expect_false (!ev_is_active (w)))
3654 return;
3655
3656 EV_FREQUENT_CHECK;
3657
3658 {
3659 int active = ev_active (w);
3660
3661 asyncs [active - 1] = asyncs [--asynccnt];
3662 ev_active (asyncs [active - 1]) = active;
3663 }
3664
3665 ev_stop (EV_A_ (W)w);
3666
3667 EV_FREQUENT_CHECK;
3668}
3669
3670void
3671ev_async_send (EV_P_ ev_async *w)
3672{
3673 w->sent = 1;
3674 evpipe_write (EV_A_ &async_pending);
2381} 3675}
2382#endif 3676#endif
2383 3677
2384/*****************************************************************************/ 3678/*****************************************************************************/
2385 3679
… …
2395once_cb (EV_P_ struct ev_once *once, int revents) 3689once_cb (EV_P_ struct ev_once *once, int revents)
2396{ 3690{
2397 void (*cb)(int revents, void *arg) = once->cb; 3691 void (*cb)(int revents, void *arg) = once->cb;
2398 void *arg = once->arg; 3692 void *arg = once->arg;
2399 3693
2400 ev_io_stop (EV_A_ &once->io); 3694 ev_io_stop (EV_A_ &once->io);
2401 ev_timer_stop (EV_A_ &once->to); 3695 ev_timer_stop (EV_A_ &once->to);
2402 ev_free (once); 3696 ev_free (once);
2403 3697
2404 cb (revents, arg); 3698 cb (revents, arg);
2405} 3699}
2406 3700
2407static void 3701static void
2408once_cb_io (EV_P_ ev_io *w, int revents) 3702once_cb_io (EV_P_ ev_io *w, int revents)
2409{ 3703{
2410 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3704 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3705
3706 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2411} 3707}
2412 3708
2413static void 3709static void
2414once_cb_to (EV_P_ ev_timer *w, int revents) 3710once_cb_to (EV_P_ ev_timer *w, int revents)
2415{ 3711{
2416 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3712 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3713
3714 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2417} 3715}
2418 3716
2419void 3717void
2420ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3718ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2421{ 3719{
2422 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3720 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2423 3721
2424 if (expect_false (!once)) 3722 if (expect_false (!once))
2425 { 3723 {
2426 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3724 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2427 return; 3725 return;
2428 } 3726 }
2429 3727
2430 once->cb = cb; 3728 once->cb = cb;
2431 once->arg = arg; 3729 once->arg = arg;
… …
2443 ev_timer_set (&once->to, timeout, 0.); 3741 ev_timer_set (&once->to, timeout, 0.);
2444 ev_timer_start (EV_A_ &once->to); 3742 ev_timer_start (EV_A_ &once->to);
2445 } 3743 }
2446} 3744}
2447 3745
3746/*****************************************************************************/
3747
3748#if EV_WALK_ENABLE
3749void
3750ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3751{
3752 int i, j;
3753 ev_watcher_list *wl, *wn;
3754
3755 if (types & (EV_IO | EV_EMBED))
3756 for (i = 0; i < anfdmax; ++i)
3757 for (wl = anfds [i].head; wl; )
3758 {
3759 wn = wl->next;
3760
3761#if EV_EMBED_ENABLE
3762 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3763 {
3764 if (types & EV_EMBED)
3765 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3766 }
3767 else
3768#endif
3769#if EV_USE_INOTIFY
3770 if (ev_cb ((ev_io *)wl) == infy_cb)
3771 ;
3772 else
3773#endif
3774 if ((ev_io *)wl != &pipe_w)
3775 if (types & EV_IO)
3776 cb (EV_A_ EV_IO, wl);
3777
3778 wl = wn;
3779 }
3780
3781 if (types & (EV_TIMER | EV_STAT))
3782 for (i = timercnt + HEAP0; i-- > HEAP0; )
3783#if EV_STAT_ENABLE
3784 /*TODO: timer is not always active*/
3785 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3786 {
3787 if (types & EV_STAT)
3788 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3789 }
3790 else
3791#endif
3792 if (types & EV_TIMER)
3793 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3794
3795#if EV_PERIODIC_ENABLE
3796 if (types & EV_PERIODIC)
3797 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3798 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3799#endif
3800
3801#if EV_IDLE_ENABLE
3802 if (types & EV_IDLE)
3803 for (j = NUMPRI; i--; )
3804 for (i = idlecnt [j]; i--; )
3805 cb (EV_A_ EV_IDLE, idles [j][i]);
3806#endif
3807
3808#if EV_FORK_ENABLE
3809 if (types & EV_FORK)
3810 for (i = forkcnt; i--; )
3811 if (ev_cb (forks [i]) != embed_fork_cb)
3812 cb (EV_A_ EV_FORK, forks [i]);
3813#endif
3814
3815#if EV_ASYNC_ENABLE
3816 if (types & EV_ASYNC)
3817 for (i = asynccnt; i--; )
3818 cb (EV_A_ EV_ASYNC, asyncs [i]);
3819#endif
3820
3821#if EV_PREPARE_ENABLE
3822 if (types & EV_PREPARE)
3823 for (i = preparecnt; i--; )
3824# if EV_EMBED_ENABLE
3825 if (ev_cb (prepares [i]) != embed_prepare_cb)
3826# endif
3827 cb (EV_A_ EV_PREPARE, prepares [i]);
3828#endif
3829
3830#if EV_CHECK_ENABLE
3831 if (types & EV_CHECK)
3832 for (i = checkcnt; i--; )
3833 cb (EV_A_ EV_CHECK, checks [i]);
3834#endif
3835
3836#if EV_SIGNAL_ENABLE
3837 if (types & EV_SIGNAL)
3838 for (i = 0; i < EV_NSIG - 1; ++i)
3839 for (wl = signals [i].head; wl; )
3840 {
3841 wn = wl->next;
3842 cb (EV_A_ EV_SIGNAL, wl);
3843 wl = wn;
3844 }
3845#endif
3846
3847#if EV_CHILD_ENABLE
3848 if (types & EV_CHILD)
3849 for (i = (EV_PID_HASHSIZE); i--; )
3850 for (wl = childs [i]; wl; )
3851 {
3852 wn = wl->next;
3853 cb (EV_A_ EV_CHILD, wl);
3854 wl = wn;
3855 }
3856#endif
3857/* EV_STAT 0x00001000 /* stat data changed */
3858/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3859}
3860#endif
3861
2448#if EV_MULTIPLICITY 3862#if EV_MULTIPLICITY
2449 #include "ev_wrap.h" 3863 #include "ev_wrap.h"
2450#endif 3864#endif
2451 3865
2452#ifdef __cplusplus 3866EV_CPP(})
2453}
2454#endif
2455 3867

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