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Comparing libev/ev.c (file contents):
Revision 1.89 by root, Sat Nov 10 19:48:44 2007 UTC vs.
Revision 1.373 by root, Sun Feb 20 02:56:23 2011 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) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met:
10 * 9 *
11 * * Redistributions of source code must retain the above copyright 10 * 1. Redistributions of source code must retain the above copyright notice,
12 * notice, this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
13 * 12 *
14 * * Redistributions in binary form must reproduce the above 13 * 2. Redistributions in binary form must reproduce the above copyright
15 * copyright notice, this list of conditions and the following 14 * notice, this list of conditions and the following disclaimer in the
16 * disclaimer in the documentation and/or other materials provided 15 * documentation and/or other materials provided with the distribution.
17 * with the distribution.
18 * 16 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Alternatively, the contents of this file may be used under the terms of
29 * the GNU General Public License ("GPL") version 2 or any later version,
30 * in which case the provisions of the GPL are applicable instead of
31 * the above. If you wish to allow the use of your version of this file
32 * only under the terms of the GPL and not to allow others to use your
33 * version of this file under the BSD license, indicate your decision
34 * by deleting the provisions above and replace them with the notice
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
37 * either the BSD or the GPL.
30 */ 38 */
31 39
32#ifdef __cplusplus 40/* this big block deduces configuration from config.h */
33extern "C" {
34#endif
35
36#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
42# ifdef EV_CONFIG_H
43# include EV_CONFIG_H
44# else
37# include "config.h" 45# include "config.h"
46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
38 67
39# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC
40# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
71# endif
72# ifndef EV_USE_REALTIME
41# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
74# endif
75# else
76# ifndef EV_USE_MONOTONIC
77# define EV_USE_MONOTONIC 0
78# endif
79# ifndef EV_USE_REALTIME
80# define EV_USE_REALTIME 0
81# endif
42# endif 82# endif
43 83
84# if HAVE_NANOSLEEP
85# ifndef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
88# else
89# undef EV_USE_NANOSLEEP
90# define EV_USE_NANOSLEEP 0
91# endif
92
44# if HAVE_SELECT && HAVE_SYS_SELECT_H 93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
96# endif
97# else
98# undef EV_USE_SELECT
45# define EV_USE_SELECT 1 99# define EV_USE_SELECT 0
46# endif 100# endif
47 101
48# if HAVE_POLL && HAVE_POLL_H 102# if HAVE_POLL && HAVE_POLL_H
103# ifndef EV_USE_POLL
104# define EV_USE_POLL EV_FEATURE_BACKENDS
105# endif
106# else
107# undef EV_USE_POLL
49# define EV_USE_POLL 1 108# define EV_USE_POLL 0
50# endif 109# endif
51 110
52# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
112# ifndef EV_USE_EPOLL
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif
115# else
116# undef EV_USE_EPOLL
53# define EV_USE_EPOLL 1 117# define EV_USE_EPOLL 0
54# endif 118# endif
55 119
56# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_KQUEUE
57# define EV_USE_KQUEUE 1 126# define EV_USE_KQUEUE 0
58# endif 127# endif
59 128
129# if HAVE_PORT_H && HAVE_PORT_CREATE
130# ifndef EV_USE_PORT
131# define EV_USE_PORT EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
60#endif 136# endif
61 137
62#include <math.h> 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
139# ifndef EV_USE_INOTIFY
140# define EV_USE_INOTIFY EV_FEATURE_OS
141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
145# endif
146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
148# ifndef EV_USE_SIGNALFD
149# define EV_USE_SIGNALFD EV_FEATURE_OS
150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
163# endif
164
165#endif
166
63#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
64#include <fcntl.h> 169#include <fcntl.h>
65#include <stddef.h> 170#include <stddef.h>
66 171
67#include <stdio.h> 172#include <stdio.h>
68 173
69#include <assert.h> 174#include <assert.h>
70#include <errno.h> 175#include <errno.h>
71#include <sys/types.h> 176#include <sys/types.h>
72#include <time.h> 177#include <time.h>
178#include <limits.h>
73 179
74#include <signal.h> 180#include <signal.h>
75
76#ifndef WIN32
77# include <unistd.h>
78# include <sys/time.h>
79# include <sys/wait.h>
80#endif
81/**/
82
83#ifndef EV_USE_MONOTONIC
84# define EV_USE_MONOTONIC 1
85#endif
86
87#ifndef EV_USE_SELECT
88# define EV_USE_SELECT 1
89#endif
90
91#ifndef EV_USE_POLL
92# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
93#endif
94
95#ifndef EV_USE_EPOLL
96# define EV_USE_EPOLL 0
97#endif
98
99#ifndef EV_USE_KQUEUE
100# define EV_USE_KQUEUE 0
101#endif
102
103#ifndef EV_USE_WIN32
104# ifdef WIN32
105# define EV_USE_WIN32 0 /* it does not exist, use select */
106# undef EV_USE_SELECT
107# define EV_USE_SELECT 1
108# else
109# define EV_USE_WIN32 0
110# endif
111#endif
112
113#ifndef EV_USE_REALTIME
114# define EV_USE_REALTIME 1
115#endif
116
117/**/
118
119#ifndef CLOCK_MONOTONIC
120# undef EV_USE_MONOTONIC
121# define EV_USE_MONOTONIC 0
122#endif
123
124#ifndef CLOCK_REALTIME
125# undef EV_USE_REALTIME
126# define EV_USE_REALTIME 0
127#endif
128
129/**/
130
131#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
132#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
133#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
134/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
135 181
136#ifdef EV_H 182#ifdef EV_H
137# include EV_H 183# include EV_H
138#else 184#else
139# include "ev.h" 185# include "ev.h"
140#endif 186#endif
141 187
188EV_CPP(extern "C" {)
189
190#ifndef _WIN32
191# include <sys/time.h>
192# include <sys/wait.h>
193# include <unistd.h>
194#else
195# include <io.h>
196# define WIN32_LEAN_AND_MEAN
197# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1
200# endif
201# undef EV_AVOID_STDIO
202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* this block tries to deduce configuration from header-defined symbols and defaults */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
245
246#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else
250# define EV_USE_CLOCK_SYSCALL 0
251# endif
252#endif
253
254#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else
258# define EV_USE_MONOTONIC 0
259# endif
260#endif
261
262#ifndef EV_USE_REALTIME
263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
264#endif
265
266#ifndef EV_USE_NANOSLEEP
267# if _POSIX_C_SOURCE >= 199309L
268# define EV_USE_NANOSLEEP EV_FEATURE_OS
269# else
270# define EV_USE_NANOSLEEP 0
271# endif
272#endif
273
274#ifndef EV_USE_SELECT
275# define EV_USE_SELECT EV_FEATURE_BACKENDS
276#endif
277
278#ifndef EV_USE_POLL
279# ifdef _WIN32
280# define EV_USE_POLL 0
281# else
282# define EV_USE_POLL EV_FEATURE_BACKENDS
283# endif
284#endif
285
286#ifndef EV_USE_EPOLL
287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
289# else
290# define EV_USE_EPOLL 0
291# endif
292#endif
293
294#ifndef EV_USE_KQUEUE
295# define EV_USE_KQUEUE 0
296#endif
297
298#ifndef EV_USE_PORT
299# define EV_USE_PORT 0
300#endif
301
302#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS
305# else
306# define EV_USE_INOTIFY 0
307# endif
308#endif
309
310#ifndef EV_PID_HASHSIZE
311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
312#endif
313
314#ifndef EV_INOTIFY_HASHSIZE
315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
316#endif
317
318#ifndef EV_USE_EVENTFD
319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
320# define EV_USE_EVENTFD EV_FEATURE_OS
321# else
322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
331# endif
332#endif
333
334#if 0 /* debugging */
335# define EV_VERIFY 3
336# define EV_USE_4HEAP 1
337# define EV_HEAP_CACHE_AT 1
338#endif
339
340#ifndef EV_VERIFY
341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
342#endif
343
344#ifndef EV_USE_4HEAP
345# define EV_USE_4HEAP EV_FEATURE_DATA
346#endif
347
348#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif
351
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h>
356# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1
360# else
361# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0
363# endif
364#endif
365
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0
377#endif
378
379#ifndef CLOCK_REALTIME
380# undef EV_USE_REALTIME
381# define EV_USE_REALTIME 0
382#endif
383
384#if !EV_STAT_ENABLE
385# undef EV_USE_INOTIFY
386# define EV_USE_INOTIFY 0
387#endif
388
389#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
392# include <sys/select.h>
393# endif
394#endif
395
396#if EV_USE_INOTIFY
397# include <sys/statfs.h>
398# include <sys/inotify.h>
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0
403# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif
409
410#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h>
413# ifndef EFD_NONBLOCK
414# define EFD_NONBLOCK O_NONBLOCK
415# endif
416# ifndef EFD_CLOEXEC
417# ifdef O_CLOEXEC
418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
446#endif
447
448/**/
449
450#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else
453# define EV_FREQUENT_CHECK do { } while (0)
454#endif
455
456/*
457 * This is used to work around floating point rounding problems.
458 * This value is good at least till the year 4000.
459 */
460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462
463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468
142#if __GNUC__ >= 3 469#if __GNUC__ >= 4
143# define expect(expr,value) __builtin_expect ((expr),(value)) 470# define expect(expr,value) __builtin_expect ((expr),(value))
144# define inline inline 471# define noinline __attribute__ ((noinline))
145#else 472#else
146# define expect(expr,value) (expr) 473# define expect(expr,value) (expr)
147# define inline static 474# define noinline
475# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
476# define inline
477# endif
148#endif 478#endif
149 479
150#define expect_false(expr) expect ((expr) != 0, 0) 480#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1) 481#define expect_true(expr) expect ((expr) != 0, 1)
482#define inline_size static inline
152 483
484#if EV_FEATURE_CODE
485# define inline_speed static inline
486#else
487# define inline_speed static noinline
488#endif
489
153#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 490#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
491
492#if EV_MINPRI == EV_MAXPRI
493# define ABSPRI(w) (((W)w), 0)
494#else
154#define ABSPRI(w) ((w)->priority - EV_MINPRI) 495# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
496#endif
155 497
498#define EMPTY /* required for microsofts broken pseudo-c compiler */
499#define EMPTY2(a,b) /* used to suppress some warnings */
500
156typedef struct ev_watcher *W; 501typedef ev_watcher *W;
157typedef struct ev_watcher_list *WL; 502typedef ev_watcher_list *WL;
158typedef struct ev_watcher_time *WT; 503typedef ev_watcher_time *WT;
159 504
505#define ev_active(w) ((W)(w))->active
506#define ev_at(w) ((WT)(w))->at
507
508#if EV_USE_REALTIME
509/* sig_atomic_t is used to avoid per-thread variables or locking but still */
510/* giving it a reasonably high chance of working on typical architectures */
511static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
512#endif
513
514#if EV_USE_MONOTONIC
160static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 515static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
516#endif
161 517
518#ifndef EV_FD_TO_WIN32_HANDLE
519# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
520#endif
521#ifndef EV_WIN32_HANDLE_TO_FD
522# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
523#endif
524#ifndef EV_WIN32_CLOSE_FD
525# define EV_WIN32_CLOSE_FD(fd) close (fd)
526#endif
527
528#ifdef _WIN32
162#include "ev_win32.c" 529# include "ev_win32.c"
530#endif
163 531
164/*****************************************************************************/ 532/*****************************************************************************/
165 533
534/* define a suitable floor function (only used by periodics atm) */
535
536#if EV_USE_FLOOR
537# include <math.h>
538# define ev_floor(v) floor (v)
539#else
540
541#include <float.h>
542
543/* a floor() replacement function, should be independent of ev_tstamp type */
544static ev_tstamp noinline
545ev_floor (ev_tstamp v)
546{
547 /* the choice of shift factor is not terribly important */
548#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
549 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
550#else
551 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
552#endif
553
554 /* argument too large for an unsigned long? */
555 if (expect_false (v >= shift))
556 {
557 ev_tstamp f;
558
559 if (v == v - 1.)
560 return v; /* very large number */
561
562 f = shift * ev_floor (v * (1. / shift));
563 return f + ev_floor (v - f);
564 }
565
566 /* special treatment for negative args? */
567 if (expect_false (v < 0.))
568 {
569 ev_tstamp f = -ev_floor (-v);
570
571 return f - (f == v ? 0 : 1);
572 }
573
574 /* fits into an unsigned long */
575 return (unsigned long)v;
576}
577
578#endif
579
580/*****************************************************************************/
581
582#ifdef __linux
583# include <sys/utsname.h>
584#endif
585
586static unsigned int noinline
587ev_linux_version (void)
588{
589#ifdef __linux
590 unsigned int v = 0;
591 struct utsname buf;
592 int i;
593 char *p = buf.release;
594
595 if (uname (&buf))
596 return 0;
597
598 for (i = 3+1; --i; )
599 {
600 unsigned int c = 0;
601
602 for (;;)
603 {
604 if (*p >= '0' && *p <= '9')
605 c = c * 10 + *p++ - '0';
606 else
607 {
608 p += *p == '.';
609 break;
610 }
611 }
612
613 v = (v << 8) | c;
614 }
615
616 return v;
617#else
618 return 0;
619#endif
620}
621
622/*****************************************************************************/
623
624#if EV_AVOID_STDIO
625static void noinline
626ev_printerr (const char *msg)
627{
628 write (STDERR_FILENO, msg, strlen (msg));
629}
630#endif
631
166static void (*syserr_cb)(const char *msg); 632static void (*syserr_cb)(const char *msg);
167 633
634void
168void ev_set_syserr_cb (void (*cb)(const char *msg)) 635ev_set_syserr_cb (void (*cb)(const char *msg))
169{ 636{
170 syserr_cb = cb; 637 syserr_cb = cb;
171} 638}
172 639
173static void 640static void noinline
174syserr (const char *msg) 641ev_syserr (const char *msg)
175{ 642{
176 if (!msg) 643 if (!msg)
177 msg = "(libev) system error"; 644 msg = "(libev) system error";
178 645
179 if (syserr_cb) 646 if (syserr_cb)
180 syserr_cb (msg); 647 syserr_cb (msg);
181 else 648 else
182 { 649 {
650#if EV_AVOID_STDIO
651 ev_printerr (msg);
652 ev_printerr (": ");
653 ev_printerr (strerror (errno));
654 ev_printerr ("\n");
655#else
183 perror (msg); 656 perror (msg);
657#endif
184 abort (); 658 abort ();
185 } 659 }
186} 660}
187 661
662static void *
663ev_realloc_emul (void *ptr, long size)
664{
665#if __GLIBC__
666 return realloc (ptr, size);
667#else
668 /* some systems, notably openbsd and darwin, fail to properly
669 * implement realloc (x, 0) (as required by both ansi c-89 and
670 * the single unix specification, so work around them here.
671 */
672
673 if (size)
674 return realloc (ptr, size);
675
676 free (ptr);
677 return 0;
678#endif
679}
680
188static void *(*alloc)(void *ptr, long size); 681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
189 682
683void
190void ev_set_allocator (void *(*cb)(void *ptr, long size)) 684ev_set_allocator (void *(*cb)(void *ptr, long size))
191{ 685{
192 alloc = cb; 686 alloc = cb;
193} 687}
194 688
195static void * 689inline_speed void *
196ev_realloc (void *ptr, long size) 690ev_realloc (void *ptr, long size)
197{ 691{
198 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 692 ptr = alloc (ptr, size);
199 693
200 if (!ptr && size) 694 if (!ptr && size)
201 { 695 {
696#if EV_AVOID_STDIO
697 ev_printerr ("(libev) memory allocation failed, aborting.\n");
698#else
202 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 699 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
700#endif
203 abort (); 701 abort ();
204 } 702 }
205 703
206 return ptr; 704 return ptr;
207} 705}
… …
209#define ev_malloc(size) ev_realloc (0, (size)) 707#define ev_malloc(size) ev_realloc (0, (size))
210#define ev_free(ptr) ev_realloc ((ptr), 0) 708#define ev_free(ptr) ev_realloc ((ptr), 0)
211 709
212/*****************************************************************************/ 710/*****************************************************************************/
213 711
712/* set in reify when reification needed */
713#define EV_ANFD_REIFY 1
714
715/* file descriptor info structure */
214typedef struct 716typedef struct
215{ 717{
216 WL head; 718 WL head;
217 unsigned char events; 719 unsigned char events; /* the events watched for */
720 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
721 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
218 unsigned char reify; 722 unsigned char unused;
723#if EV_USE_EPOLL
724 unsigned int egen; /* generation counter to counter epoll bugs */
725#endif
726#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
727 SOCKET handle;
728#endif
729#if EV_USE_IOCP
730 OVERLAPPED or, ow;
731#endif
219} ANFD; 732} ANFD;
220 733
734/* stores the pending event set for a given watcher */
221typedef struct 735typedef struct
222{ 736{
223 W w; 737 W w;
224 int events; 738 int events; /* the pending event set for the given watcher */
225} ANPENDING; 739} ANPENDING;
740
741#if EV_USE_INOTIFY
742/* hash table entry per inotify-id */
743typedef struct
744{
745 WL head;
746} ANFS;
747#endif
748
749/* Heap Entry */
750#if EV_HEAP_CACHE_AT
751 /* a heap element */
752 typedef struct {
753 ev_tstamp at;
754 WT w;
755 } ANHE;
756
757 #define ANHE_w(he) (he).w /* access watcher, read-write */
758 #define ANHE_at(he) (he).at /* access cached at, read-only */
759 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
760#else
761 /* a heap element */
762 typedef WT ANHE;
763
764 #define ANHE_w(he) (he)
765 #define ANHE_at(he) (he)->at
766 #define ANHE_at_cache(he)
767#endif
226 768
227#if EV_MULTIPLICITY 769#if EV_MULTIPLICITY
228 770
229 struct ev_loop 771 struct ev_loop
230 { 772 {
231 ev_tstamp ev_rt_now; 773 ev_tstamp ev_rt_now;
774 #define ev_rt_now ((loop)->ev_rt_now)
232 #define VAR(name,decl) decl; 775 #define VAR(name,decl) decl;
233 #include "ev_vars.h" 776 #include "ev_vars.h"
234 #undef VAR 777 #undef VAR
235 }; 778 };
236 #include "ev_wrap.h" 779 #include "ev_wrap.h"
237 780
238 struct ev_loop default_loop_struct; 781 static struct ev_loop default_loop_struct;
239 static struct ev_loop *default_loop; 782 struct ev_loop *ev_default_loop_ptr;
240 783
241#else 784#else
242 785
243 ev_tstamp ev_rt_now; 786 ev_tstamp ev_rt_now;
244 #define VAR(name,decl) static decl; 787 #define VAR(name,decl) static decl;
245 #include "ev_vars.h" 788 #include "ev_vars.h"
246 #undef VAR 789 #undef VAR
247 790
248 static int default_loop; 791 static int ev_default_loop_ptr;
249 792
250#endif 793#endif
794
795#if EV_FEATURE_API
796# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
797# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
798# define EV_INVOKE_PENDING invoke_cb (EV_A)
799#else
800# define EV_RELEASE_CB (void)0
801# define EV_ACQUIRE_CB (void)0
802# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
803#endif
804
805#define EVBREAK_RECURSE 0x80
251 806
252/*****************************************************************************/ 807/*****************************************************************************/
253 808
254inline ev_tstamp 809#ifndef EV_HAVE_EV_TIME
810ev_tstamp
255ev_time (void) 811ev_time (void)
256{ 812{
257#if EV_USE_REALTIME 813#if EV_USE_REALTIME
814 if (expect_true (have_realtime))
815 {
258 struct timespec ts; 816 struct timespec ts;
259 clock_gettime (CLOCK_REALTIME, &ts); 817 clock_gettime (CLOCK_REALTIME, &ts);
260 return ts.tv_sec + ts.tv_nsec * 1e-9; 818 return ts.tv_sec + ts.tv_nsec * 1e-9;
261#else 819 }
820#endif
821
262 struct timeval tv; 822 struct timeval tv;
263 gettimeofday (&tv, 0); 823 gettimeofday (&tv, 0);
264 return tv.tv_sec + tv.tv_usec * 1e-6; 824 return tv.tv_sec + tv.tv_usec * 1e-6;
265#endif
266} 825}
826#endif
267 827
268inline ev_tstamp 828inline_size ev_tstamp
269get_clock (void) 829get_clock (void)
270{ 830{
271#if EV_USE_MONOTONIC 831#if EV_USE_MONOTONIC
272 if (expect_true (have_monotonic)) 832 if (expect_true (have_monotonic))
273 { 833 {
… …
286{ 846{
287 return ev_rt_now; 847 return ev_rt_now;
288} 848}
289#endif 849#endif
290 850
291#define array_roundsize(type,n) ((n) | 4 & ~3) 851void
852ev_sleep (ev_tstamp delay)
853{
854 if (delay > 0.)
855 {
856#if EV_USE_NANOSLEEP
857 struct timespec ts;
858
859 EV_TS_SET (ts, delay);
860 nanosleep (&ts, 0);
861#elif defined(_WIN32)
862 Sleep ((unsigned long)(delay * 1e3));
863#else
864 struct timeval tv;
865
866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
867 /* something not guaranteed by newer posix versions, but guaranteed */
868 /* by older ones */
869 EV_TV_SET (tv, delay);
870 select (0, 0, 0, 0, &tv);
871#endif
872 }
873}
874
875inline_speed int
876ev_timeout_to_ms (ev_tstamp timeout)
877{
878 int ms = timeout * 1000. + .999999;
879
880 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
881}
882
883/*****************************************************************************/
884
885#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
886
887/* find a suitable new size for the given array, */
888/* hopefully by rounding to a nice-to-malloc size */
889inline_size int
890array_nextsize (int elem, int cur, int cnt)
891{
892 int ncur = cur + 1;
893
894 do
895 ncur <<= 1;
896 while (cnt > ncur);
897
898 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
899 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
900 {
901 ncur *= elem;
902 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
903 ncur = ncur - sizeof (void *) * 4;
904 ncur /= elem;
905 }
906
907 return ncur;
908}
909
910static noinline void *
911array_realloc (int elem, void *base, int *cur, int cnt)
912{
913 *cur = array_nextsize (elem, *cur, cnt);
914 return ev_realloc (base, elem * *cur);
915}
916
917#define array_init_zero(base,count) \
918 memset ((void *)(base), 0, sizeof (*(base)) * (count))
292 919
293#define array_needsize(type,base,cur,cnt,init) \ 920#define array_needsize(type,base,cur,cnt,init) \
294 if (expect_false ((cnt) > cur)) \ 921 if (expect_false ((cnt) > (cur))) \
295 { \ 922 { \
296 int newcnt = cur; \ 923 int ocur_ = (cur); \
297 do \ 924 (base) = (type *)array_realloc \
298 { \ 925 (sizeof (type), (base), &(cur), (cnt)); \
299 newcnt = array_roundsize (type, newcnt << 1); \ 926 init ((base) + (ocur_), (cur) - ocur_); \
300 } \
301 while ((cnt) > newcnt); \
302 \
303 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
304 init (base + cur, newcnt - cur); \
305 cur = newcnt; \
306 } 927 }
307 928
929#if 0
308#define array_slim(type,stem) \ 930#define array_slim(type,stem) \
309 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 931 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
310 { \ 932 { \
311 stem ## max = array_roundsize (stem ## cnt >> 1); \ 933 stem ## max = array_roundsize (stem ## cnt >> 1); \
312 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 934 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
313 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 935 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
314 } 936 }
315 937#endif
316/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
317/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
318#define array_free_microshit(stem) \
319 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
320 938
321#define array_free(stem, idx) \ 939#define array_free(stem, idx) \
322 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 940 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
323 941
324/*****************************************************************************/ 942/*****************************************************************************/
325 943
326static void 944/* dummy callback for pending events */
327anfds_init (ANFD *base, int count) 945static void noinline
946pendingcb (EV_P_ ev_prepare *w, int revents)
328{ 947{
329 while (count--)
330 {
331 base->head = 0;
332 base->events = EV_NONE;
333 base->reify = 0;
334
335 ++base;
336 }
337} 948}
338 949
339void 950void noinline
340ev_feed_event (EV_P_ void *w, int revents) 951ev_feed_event (EV_P_ void *w, int revents)
341{ 952{
342 W w_ = (W)w; 953 W w_ = (W)w;
954 int pri = ABSPRI (w_);
343 955
344 if (w_->pending) 956 if (expect_false (w_->pending))
957 pendings [pri][w_->pending - 1].events |= revents;
958 else
345 { 959 {
960 w_->pending = ++pendingcnt [pri];
961 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
962 pendings [pri][w_->pending - 1].w = w_;
346 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 963 pendings [pri][w_->pending - 1].events = revents;
347 return;
348 } 964 }
349
350 w_->pending = ++pendingcnt [ABSPRI (w_)];
351 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
352 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
353 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
354} 965}
355 966
356static void 967inline_speed void
968feed_reverse (EV_P_ W w)
969{
970 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
971 rfeeds [rfeedcnt++] = w;
972}
973
974inline_size void
975feed_reverse_done (EV_P_ int revents)
976{
977 do
978 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
979 while (rfeedcnt);
980}
981
982inline_speed void
357queue_events (EV_P_ W *events, int eventcnt, int type) 983queue_events (EV_P_ W *events, int eventcnt, int type)
358{ 984{
359 int i; 985 int i;
360 986
361 for (i = 0; i < eventcnt; ++i) 987 for (i = 0; i < eventcnt; ++i)
362 ev_feed_event (EV_A_ events [i], type); 988 ev_feed_event (EV_A_ events [i], type);
363} 989}
364 990
991/*****************************************************************************/
992
365inline void 993inline_speed void
366fd_event (EV_P_ int fd, int revents) 994fd_event_nocheck (EV_P_ int fd, int revents)
367{ 995{
368 ANFD *anfd = anfds + fd; 996 ANFD *anfd = anfds + fd;
369 struct ev_io *w; 997 ev_io *w;
370 998
371 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 999 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
372 { 1000 {
373 int ev = w->events & revents; 1001 int ev = w->events & revents;
374 1002
375 if (ev) 1003 if (ev)
376 ev_feed_event (EV_A_ (W)w, ev); 1004 ev_feed_event (EV_A_ (W)w, ev);
377 } 1005 }
378} 1006}
379 1007
1008/* do not submit kernel events for fds that have reify set */
1009/* because that means they changed while we were polling for new events */
1010inline_speed void
1011fd_event (EV_P_ int fd, int revents)
1012{
1013 ANFD *anfd = anfds + fd;
1014
1015 if (expect_true (!anfd->reify))
1016 fd_event_nocheck (EV_A_ fd, revents);
1017}
1018
380void 1019void
381ev_feed_fd_event (EV_P_ int fd, int revents) 1020ev_feed_fd_event (EV_P_ int fd, int revents)
382{ 1021{
1022 if (fd >= 0 && fd < anfdmax)
383 fd_event (EV_A_ fd, revents); 1023 fd_event_nocheck (EV_A_ fd, revents);
384} 1024}
385 1025
386/*****************************************************************************/ 1026/* make sure the external fd watch events are in-sync */
387 1027/* with the kernel/libev internal state */
388static void 1028inline_size void
389fd_reify (EV_P) 1029fd_reify (EV_P)
390{ 1030{
391 int i; 1031 int i;
392 1032
1033#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
393 for (i = 0; i < fdchangecnt; ++i) 1034 for (i = 0; i < fdchangecnt; ++i)
394 { 1035 {
395 int fd = fdchanges [i]; 1036 int fd = fdchanges [i];
396 ANFD *anfd = anfds + fd; 1037 ANFD *anfd = anfds + fd;
1038
1039 if (anfd->reify & EV__IOFDSET)
1040 {
1041 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1042
1043 if (handle != anfd->handle)
1044 {
1045 unsigned long arg;
1046
1047 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1048
1049 /* handle changed, but fd didn't - we need to do it in two steps */
1050 backend_modify (EV_A_ fd, anfd->events, 0);
1051 anfd->events = 0;
1052 anfd->handle = handle;
1053 }
1054 }
1055 }
1056#endif
1057
1058 for (i = 0; i < fdchangecnt; ++i)
1059 {
1060 int fd = fdchanges [i];
1061 ANFD *anfd = anfds + fd;
397 struct ev_io *w; 1062 ev_io *w;
398 1063
399 int events = 0; 1064 unsigned char o_events = anfd->events;
1065 unsigned char o_reify = anfd->reify;
400 1066
401 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
402 events |= w->events;
403
404 anfd->reify = 0; 1067 anfd->reify = 0;
405 1068
406 method_modify (EV_A_ fd, anfd->events, events); 1069 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1070 {
407 anfd->events = events; 1071 anfd->events = 0;
1072
1073 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1074 anfd->events |= (unsigned char)w->events;
1075
1076 if (o_events != anfd->events)
1077 o_reify = EV__IOFDSET; /* actually |= */
1078 }
1079
1080 if (o_reify & EV__IOFDSET)
1081 backend_modify (EV_A_ fd, o_events, anfd->events);
408 } 1082 }
409 1083
410 fdchangecnt = 0; 1084 fdchangecnt = 0;
411} 1085}
412 1086
413static void 1087/* something about the given fd changed */
1088inline_size void
414fd_change (EV_P_ int fd) 1089fd_change (EV_P_ int fd, int flags)
415{ 1090{
416 if (anfds [fd].reify) 1091 unsigned char reify = anfds [fd].reify;
417 return;
418
419 anfds [fd].reify = 1; 1092 anfds [fd].reify |= flags;
420 1093
1094 if (expect_true (!reify))
1095 {
421 ++fdchangecnt; 1096 ++fdchangecnt;
422 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 1097 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
423 fdchanges [fdchangecnt - 1] = fd; 1098 fdchanges [fdchangecnt - 1] = fd;
1099 }
424} 1100}
425 1101
426static void 1102/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1103inline_speed void
427fd_kill (EV_P_ int fd) 1104fd_kill (EV_P_ int fd)
428{ 1105{
429 struct ev_io *w; 1106 ev_io *w;
430 1107
431 while ((w = (struct ev_io *)anfds [fd].head)) 1108 while ((w = (ev_io *)anfds [fd].head))
432 { 1109 {
433 ev_io_stop (EV_A_ w); 1110 ev_io_stop (EV_A_ w);
434 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1111 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
435 } 1112 }
436} 1113}
437 1114
438static int 1115/* check whether the given fd is actually valid, for error recovery */
1116inline_size int
439fd_valid (int fd) 1117fd_valid (int fd)
440{ 1118{
441#ifdef WIN32 1119#ifdef _WIN32
442 return !!win32_get_osfhandle (fd); 1120 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
443#else 1121#else
444 return fcntl (fd, F_GETFD) != -1; 1122 return fcntl (fd, F_GETFD) != -1;
445#endif 1123#endif
446} 1124}
447 1125
448/* called on EBADF to verify fds */ 1126/* called on EBADF to verify fds */
449static void 1127static void noinline
450fd_ebadf (EV_P) 1128fd_ebadf (EV_P)
451{ 1129{
452 int fd; 1130 int fd;
453 1131
454 for (fd = 0; fd < anfdmax; ++fd) 1132 for (fd = 0; fd < anfdmax; ++fd)
455 if (anfds [fd].events) 1133 if (anfds [fd].events)
456 if (!fd_valid (fd) == -1 && errno == EBADF) 1134 if (!fd_valid (fd) && errno == EBADF)
457 fd_kill (EV_A_ fd); 1135 fd_kill (EV_A_ fd);
458} 1136}
459 1137
460/* called on ENOMEM in select/poll to kill some fds and retry */ 1138/* called on ENOMEM in select/poll to kill some fds and retry */
461static void 1139static void noinline
462fd_enomem (EV_P) 1140fd_enomem (EV_P)
463{ 1141{
464 int fd; 1142 int fd;
465 1143
466 for (fd = anfdmax; fd--; ) 1144 for (fd = anfdmax; fd--; )
467 if (anfds [fd].events) 1145 if (anfds [fd].events)
468 { 1146 {
469 fd_kill (EV_A_ fd); 1147 fd_kill (EV_A_ fd);
470 return; 1148 break;
471 } 1149 }
472} 1150}
473 1151
474/* usually called after fork if method needs to re-arm all fds from scratch */ 1152/* usually called after fork if backend needs to re-arm all fds from scratch */
475static void 1153static void noinline
476fd_rearm_all (EV_P) 1154fd_rearm_all (EV_P)
477{ 1155{
478 int fd; 1156 int fd;
479 1157
480 /* this should be highly optimised to not do anything but set a flag */
481 for (fd = 0; fd < anfdmax; ++fd) 1158 for (fd = 0; fd < anfdmax; ++fd)
482 if (anfds [fd].events) 1159 if (anfds [fd].events)
483 { 1160 {
484 anfds [fd].events = 0; 1161 anfds [fd].events = 0;
485 fd_change (EV_A_ fd); 1162 anfds [fd].emask = 0;
1163 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
486 } 1164 }
487} 1165}
488 1166
1167/* used to prepare libev internal fd's */
1168/* this is not fork-safe */
1169inline_speed void
1170fd_intern (int fd)
1171{
1172#ifdef _WIN32
1173 unsigned long arg = 1;
1174 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1175#else
1176 fcntl (fd, F_SETFD, FD_CLOEXEC);
1177 fcntl (fd, F_SETFL, O_NONBLOCK);
1178#endif
1179}
1180
489/*****************************************************************************/ 1181/*****************************************************************************/
490 1182
1183/*
1184 * the heap functions want a real array index. array index 0 is guaranteed to not
1185 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1186 * the branching factor of the d-tree.
1187 */
1188
1189/*
1190 * at the moment we allow libev the luxury of two heaps,
1191 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1192 * which is more cache-efficient.
1193 * the difference is about 5% with 50000+ watchers.
1194 */
1195#if EV_USE_4HEAP
1196
1197#define DHEAP 4
1198#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1199#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1200#define UPHEAP_DONE(p,k) ((p) == (k))
1201
1202/* away from the root */
1203inline_speed void
1204downheap (ANHE *heap, int N, int k)
1205{
1206 ANHE he = heap [k];
1207 ANHE *E = heap + N + HEAP0;
1208
1209 for (;;)
1210 {
1211 ev_tstamp minat;
1212 ANHE *minpos;
1213 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1214
1215 /* find minimum child */
1216 if (expect_true (pos + DHEAP - 1 < E))
1217 {
1218 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1219 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1220 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1221 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1222 }
1223 else if (pos < E)
1224 {
1225 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1226 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1227 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1228 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1229 }
1230 else
1231 break;
1232
1233 if (ANHE_at (he) <= minat)
1234 break;
1235
1236 heap [k] = *minpos;
1237 ev_active (ANHE_w (*minpos)) = k;
1238
1239 k = minpos - heap;
1240 }
1241
1242 heap [k] = he;
1243 ev_active (ANHE_w (he)) = k;
1244}
1245
1246#else /* 4HEAP */
1247
1248#define HEAP0 1
1249#define HPARENT(k) ((k) >> 1)
1250#define UPHEAP_DONE(p,k) (!(p))
1251
1252/* away from the root */
1253inline_speed void
1254downheap (ANHE *heap, int N, int k)
1255{
1256 ANHE he = heap [k];
1257
1258 for (;;)
1259 {
1260 int c = k << 1;
1261
1262 if (c >= N + HEAP0)
1263 break;
1264
1265 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1266 ? 1 : 0;
1267
1268 if (ANHE_at (he) <= ANHE_at (heap [c]))
1269 break;
1270
1271 heap [k] = heap [c];
1272 ev_active (ANHE_w (heap [k])) = k;
1273
1274 k = c;
1275 }
1276
1277 heap [k] = he;
1278 ev_active (ANHE_w (he)) = k;
1279}
1280#endif
1281
1282/* towards the root */
1283inline_speed void
1284upheap (ANHE *heap, int k)
1285{
1286 ANHE he = heap [k];
1287
1288 for (;;)
1289 {
1290 int p = HPARENT (k);
1291
1292 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1293 break;
1294
1295 heap [k] = heap [p];
1296 ev_active (ANHE_w (heap [k])) = k;
1297 k = p;
1298 }
1299
1300 heap [k] = he;
1301 ev_active (ANHE_w (he)) = k;
1302}
1303
1304/* move an element suitably so it is in a correct place */
1305inline_size void
1306adjustheap (ANHE *heap, int N, int k)
1307{
1308 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1309 upheap (heap, k);
1310 else
1311 downheap (heap, N, k);
1312}
1313
1314/* rebuild the heap: this function is used only once and executed rarely */
1315inline_size void
1316reheap (ANHE *heap, int N)
1317{
1318 int i;
1319
1320 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1321 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1322 for (i = 0; i < N; ++i)
1323 upheap (heap, i + HEAP0);
1324}
1325
1326/*****************************************************************************/
1327
1328/* associate signal watchers to a signal signal */
1329typedef struct
1330{
1331 EV_ATOMIC_T pending;
1332#if EV_MULTIPLICITY
1333 EV_P;
1334#endif
1335 WL head;
1336} ANSIG;
1337
1338static ANSIG signals [EV_NSIG - 1];
1339
1340/*****************************************************************************/
1341
1342#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1343
1344static void noinline
1345evpipe_init (EV_P)
1346{
1347 if (!ev_is_active (&pipe_w))
1348 {
1349# if EV_USE_EVENTFD
1350 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1351 if (evfd < 0 && errno == EINVAL)
1352 evfd = eventfd (0, 0);
1353
1354 if (evfd >= 0)
1355 {
1356 evpipe [0] = -1;
1357 fd_intern (evfd); /* doing it twice doesn't hurt */
1358 ev_io_set (&pipe_w, evfd, EV_READ);
1359 }
1360 else
1361# endif
1362 {
1363 while (pipe (evpipe))
1364 ev_syserr ("(libev) error creating signal/async pipe");
1365
1366 fd_intern (evpipe [0]);
1367 fd_intern (evpipe [1]);
1368 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1369 }
1370
1371 ev_io_start (EV_A_ &pipe_w);
1372 ev_unref (EV_A); /* watcher should not keep loop alive */
1373 }
1374}
1375
1376inline_size void
1377evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1378{
1379 if (!*flag)
1380 {
1381 int old_errno = errno; /* save errno because write might clobber it */
1382 char dummy;
1383
1384 *flag = 1;
1385
1386#if EV_USE_EVENTFD
1387 if (evfd >= 0)
1388 {
1389 uint64_t counter = 1;
1390 write (evfd, &counter, sizeof (uint64_t));
1391 }
1392 else
1393#endif
1394 /* win32 people keep sending patches that change this write() to send() */
1395 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1396 /* so when you think this write should be a send instead, please find out */
1397 /* where your send() is from - it's definitely not the microsoft send, and */
1398 /* tell me. thank you. */
1399 write (evpipe [1], &dummy, 1);
1400
1401 errno = old_errno;
1402 }
1403}
1404
1405/* called whenever the libev signal pipe */
1406/* got some events (signal, async) */
491static void 1407static void
492upheap (WT *heap, int k) 1408pipecb (EV_P_ ev_io *iow, int revents)
493{ 1409{
494 WT w = heap [k]; 1410 int i;
495 1411
496 while (k && heap [k >> 1]->at > w->at) 1412#if EV_USE_EVENTFD
497 { 1413 if (evfd >= 0)
498 heap [k] = heap [k >> 1];
499 ((W)heap [k])->active = k + 1;
500 k >>= 1;
501 } 1414 {
1415 uint64_t counter;
1416 read (evfd, &counter, sizeof (uint64_t));
1417 }
1418 else
1419#endif
1420 {
1421 char dummy;
1422 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1423 read (evpipe [0], &dummy, 1);
1424 }
502 1425
503 heap [k] = w; 1426#if EV_SIGNAL_ENABLE
504 ((W)heap [k])->active = k + 1; 1427 if (sig_pending)
1428 {
1429 sig_pending = 0;
505 1430
1431 for (i = EV_NSIG - 1; i--; )
1432 if (expect_false (signals [i].pending))
1433 ev_feed_signal_event (EV_A_ i + 1);
1434 }
1435#endif
1436
1437#if EV_ASYNC_ENABLE
1438 if (async_pending)
1439 {
1440 async_pending = 0;
1441
1442 for (i = asynccnt; i--; )
1443 if (asyncs [i]->sent)
1444 {
1445 asyncs [i]->sent = 0;
1446 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1447 }
1448 }
1449#endif
1450}
1451
1452/*****************************************************************************/
1453
1454void
1455ev_feed_signal (int signum)
1456{
1457#if EV_MULTIPLICITY
1458 EV_P = signals [signum - 1].loop;
1459
1460 if (!EV_A)
1461 return;
1462#endif
1463
1464 signals [signum - 1].pending = 1;
1465 evpipe_write (EV_A_ &sig_pending);
506} 1466}
507 1467
508static void 1468static void
509downheap (WT *heap, int N, int k)
510{
511 WT w = heap [k];
512
513 while (k < (N >> 1))
514 {
515 int j = k << 1;
516
517 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
518 ++j;
519
520 if (w->at <= heap [j]->at)
521 break;
522
523 heap [k] = heap [j];
524 ((W)heap [k])->active = k + 1;
525 k = j;
526 }
527
528 heap [k] = w;
529 ((W)heap [k])->active = k + 1;
530}
531
532inline void
533adjustheap (WT *heap, int N, int k, ev_tstamp at)
534{
535 ev_tstamp old_at = heap [k]->at;
536 heap [k]->at = at;
537
538 if (old_at < at)
539 downheap (heap, N, k);
540 else
541 upheap (heap, k);
542}
543
544/*****************************************************************************/
545
546typedef struct
547{
548 WL head;
549 sig_atomic_t volatile gotsig;
550} ANSIG;
551
552static ANSIG *signals;
553static int signalmax;
554
555static int sigpipe [2];
556static sig_atomic_t volatile gotsig;
557static struct ev_io sigev;
558
559static void
560signals_init (ANSIG *base, int count)
561{
562 while (count--)
563 {
564 base->head = 0;
565 base->gotsig = 0;
566
567 ++base;
568 }
569}
570
571static void
572sighandler (int signum) 1469ev_sighandler (int signum)
573{ 1470{
574#if WIN32
575 signal (signum, sighandler);
576#endif
577
578 signals [signum - 1].gotsig = 1;
579
580 if (!gotsig)
581 {
582 int old_errno = errno;
583 gotsig = 1;
584#ifdef WIN32 1471#ifdef _WIN32
585 send (sigpipe [1], &signum, 1, MSG_DONTWAIT); 1472 signal (signum, ev_sighandler);
586#else
587 write (sigpipe [1], &signum, 1);
588#endif 1473#endif
589 errno = old_errno;
590 }
591}
592 1474
593void 1475 ev_feed_signal (signum);
1476}
1477
1478void noinline
594ev_feed_signal_event (EV_P_ int signum) 1479ev_feed_signal_event (EV_P_ int signum)
595{ 1480{
596 WL w; 1481 WL w;
597 1482
1483 if (expect_false (signum <= 0 || signum > EV_NSIG))
1484 return;
1485
1486 --signum;
1487
598#if EV_MULTIPLICITY 1488#if EV_MULTIPLICITY
599 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 1489 /* it is permissible to try to feed a signal to the wrong loop */
600#endif 1490 /* or, likely more useful, feeding a signal nobody is waiting for */
601 1491
602 --signum; 1492 if (expect_false (signals [signum].loop != EV_A))
603
604 if (signum < 0 || signum >= signalmax)
605 return; 1493 return;
1494#endif
606 1495
607 signals [signum].gotsig = 0; 1496 signals [signum].pending = 0;
608 1497
609 for (w = signals [signum].head; w; w = w->next) 1498 for (w = signals [signum].head; w; w = w->next)
610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1499 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
611} 1500}
612 1501
1502#if EV_USE_SIGNALFD
613static void 1503static void
614sigcb (EV_P_ struct ev_io *iow, int revents) 1504sigfdcb (EV_P_ ev_io *iow, int revents)
615{ 1505{
616 int signum; 1506 struct signalfd_siginfo si[2], *sip; /* these structs are big */
617 1507
618#ifdef WIN32 1508 for (;;)
619 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT); 1509 {
620#else 1510 ssize_t res = read (sigfd, si, sizeof (si));
621 read (sigpipe [0], &revents, 1);
622#endif
623 gotsig = 0;
624 1511
625 for (signum = signalmax; signum--; ) 1512 /* not ISO-C, as res might be -1, but works with SuS */
626 if (signals [signum].gotsig) 1513 for (sip = si; (char *)sip < (char *)si + res; ++sip)
627 ev_feed_signal_event (EV_A_ signum + 1); 1514 ev_feed_signal_event (EV_A_ sip->ssi_signo);
628}
629 1515
630static void 1516 if (res < (ssize_t)sizeof (si))
631siginit (EV_P) 1517 break;
632{ 1518 }
633#ifndef WIN32
634 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
635 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
636
637 /* rather than sort out wether we really need nb, set it */
638 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
639 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
640#endif
641
642 ev_io_set (&sigev, sigpipe [0], EV_READ);
643 ev_io_start (EV_A_ &sigev);
644 ev_unref (EV_A); /* child watcher should not keep loop alive */
645} 1519}
1520#endif
1521
1522#endif
646 1523
647/*****************************************************************************/ 1524/*****************************************************************************/
648 1525
649static struct ev_child *childs [PID_HASHSIZE]; 1526#if EV_CHILD_ENABLE
1527static WL childs [EV_PID_HASHSIZE];
650 1528
651#ifndef WIN32
652
653static struct ev_signal childev; 1529static ev_signal childev;
1530
1531#ifndef WIFCONTINUED
1532# define WIFCONTINUED(status) 0
1533#endif
1534
1535/* handle a single child status event */
1536inline_speed void
1537child_reap (EV_P_ int chain, int pid, int status)
1538{
1539 ev_child *w;
1540 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1541
1542 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1543 {
1544 if ((w->pid == pid || !w->pid)
1545 && (!traced || (w->flags & 1)))
1546 {
1547 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1548 w->rpid = pid;
1549 w->rstatus = status;
1550 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1551 }
1552 }
1553}
654 1554
655#ifndef WCONTINUED 1555#ifndef WCONTINUED
656# define WCONTINUED 0 1556# define WCONTINUED 0
657#endif 1557#endif
658 1558
1559/* called on sigchld etc., calls waitpid */
659static void 1560static void
660child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
661{
662 struct ev_child *w;
663
664 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
665 if (w->pid == pid || !w->pid)
666 {
667 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
668 w->rpid = pid;
669 w->rstatus = status;
670 ev_feed_event (EV_A_ (W)w, EV_CHILD);
671 }
672}
673
674static void
675childcb (EV_P_ struct ev_signal *sw, int revents) 1561childcb (EV_P_ ev_signal *sw, int revents)
676{ 1562{
677 int pid, status; 1563 int pid, status;
678 1564
1565 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
679 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1566 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
680 { 1567 if (!WCONTINUED
1568 || errno != EINVAL
1569 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1570 return;
1571
681 /* make sure we are called again until all childs have been reaped */ 1572 /* make sure we are called again until all children have been reaped */
1573 /* we need to do it this way so that the callback gets called before we continue */
682 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1574 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683 1575
684 child_reap (EV_A_ sw, pid, pid, status); 1576 child_reap (EV_A_ pid, pid, status);
1577 if ((EV_PID_HASHSIZE) > 1)
685 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1578 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
686 }
687} 1579}
688 1580
689#endif 1581#endif
690 1582
691/*****************************************************************************/ 1583/*****************************************************************************/
692 1584
1585#if EV_USE_IOCP
1586# include "ev_iocp.c"
1587#endif
1588#if EV_USE_PORT
1589# include "ev_port.c"
1590#endif
693#if EV_USE_KQUEUE 1591#if EV_USE_KQUEUE
694# include "ev_kqueue.c" 1592# include "ev_kqueue.c"
695#endif 1593#endif
696#if EV_USE_EPOLL 1594#if EV_USE_EPOLL
697# include "ev_epoll.c" 1595# include "ev_epoll.c"
… …
714{ 1612{
715 return EV_VERSION_MINOR; 1613 return EV_VERSION_MINOR;
716} 1614}
717 1615
718/* return true if we are running with elevated privileges and should ignore env variables */ 1616/* return true if we are running with elevated privileges and should ignore env variables */
719static int 1617int inline_size
720enable_secure (void) 1618enable_secure (void)
721{ 1619{
722#ifdef WIN32 1620#ifdef _WIN32
723 return 0; 1621 return 0;
724#else 1622#else
725 return getuid () != geteuid () 1623 return getuid () != geteuid ()
726 || getgid () != getegid (); 1624 || getgid () != getegid ();
727#endif 1625#endif
728} 1626}
729 1627
730int 1628unsigned int
1629ev_supported_backends (void)
1630{
1631 unsigned int flags = 0;
1632
1633 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1634 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1635 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1636 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1637 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1638
1639 return flags;
1640}
1641
1642unsigned int
1643ev_recommended_backends (void)
1644{
1645 unsigned int flags = ev_supported_backends ();
1646
1647#ifndef __NetBSD__
1648 /* kqueue is borked on everything but netbsd apparently */
1649 /* it usually doesn't work correctly on anything but sockets and pipes */
1650 flags &= ~EVBACKEND_KQUEUE;
1651#endif
1652#ifdef __APPLE__
1653 /* only select works correctly on that "unix-certified" platform */
1654 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1655 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1656#endif
1657#ifdef __FreeBSD__
1658 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1659#endif
1660
1661 return flags;
1662}
1663
1664unsigned int
1665ev_embeddable_backends (void)
1666{
1667 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1668
1669 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1670 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1671 flags &= ~EVBACKEND_EPOLL;
1672
1673 return flags;
1674}
1675
1676unsigned int
1677ev_backend (EV_P)
1678{
1679 return backend;
1680}
1681
1682#if EV_FEATURE_API
1683unsigned int
1684ev_iteration (EV_P)
1685{
1686 return loop_count;
1687}
1688
1689unsigned int
731ev_method (EV_P) 1690ev_depth (EV_P)
732{ 1691{
733 return method; 1692 return loop_depth;
734} 1693}
735 1694
736static void 1695void
737loop_init (EV_P_ int methods) 1696ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
738{ 1697{
739 if (!method) 1698 io_blocktime = interval;
1699}
1700
1701void
1702ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1703{
1704 timeout_blocktime = interval;
1705}
1706
1707void
1708ev_set_userdata (EV_P_ void *data)
1709{
1710 userdata = data;
1711}
1712
1713void *
1714ev_userdata (EV_P)
1715{
1716 return userdata;
1717}
1718
1719void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1720{
1721 invoke_cb = invoke_pending_cb;
1722}
1723
1724void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1725{
1726 release_cb = release;
1727 acquire_cb = acquire;
1728}
1729#endif
1730
1731/* initialise a loop structure, must be zero-initialised */
1732static void noinline
1733loop_init (EV_P_ unsigned int flags)
1734{
1735 if (!backend)
740 { 1736 {
1737 origflags = flags;
1738
1739#if EV_USE_REALTIME
1740 if (!have_realtime)
1741 {
1742 struct timespec ts;
1743
1744 if (!clock_gettime (CLOCK_REALTIME, &ts))
1745 have_realtime = 1;
1746 }
1747#endif
1748
741#if EV_USE_MONOTONIC 1749#if EV_USE_MONOTONIC
1750 if (!have_monotonic)
1751 {
1752 struct timespec ts;
1753
1754 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1755 have_monotonic = 1;
1756 }
1757#endif
1758
1759 /* pid check not overridable via env */
1760#ifndef _WIN32
1761 if (flags & EVFLAG_FORKCHECK)
1762 curpid = getpid ();
1763#endif
1764
1765 if (!(flags & EVFLAG_NOENV)
1766 && !enable_secure ()
1767 && getenv ("LIBEV_FLAGS"))
1768 flags = atoi (getenv ("LIBEV_FLAGS"));
1769
1770 ev_rt_now = ev_time ();
1771 mn_now = get_clock ();
1772 now_floor = mn_now;
1773 rtmn_diff = ev_rt_now - mn_now;
1774#if EV_FEATURE_API
1775 invoke_cb = ev_invoke_pending;
1776#endif
1777
1778 io_blocktime = 0.;
1779 timeout_blocktime = 0.;
1780 backend = 0;
1781 backend_fd = -1;
1782 sig_pending = 0;
1783#if EV_ASYNC_ENABLE
1784 async_pending = 0;
1785#endif
1786#if EV_USE_INOTIFY
1787 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1788#endif
1789#if EV_USE_SIGNALFD
1790 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1791#endif
1792
1793 if (!(flags & EVBACKEND_MASK))
1794 flags |= ev_recommended_backends ();
1795
1796#if EV_USE_IOCP
1797 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1798#endif
1799#if EV_USE_PORT
1800 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1801#endif
1802#if EV_USE_KQUEUE
1803 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
1804#endif
1805#if EV_USE_EPOLL
1806 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1807#endif
1808#if EV_USE_POLL
1809 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1810#endif
1811#if EV_USE_SELECT
1812 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1813#endif
1814
1815 ev_prepare_init (&pending_w, pendingcb);
1816
1817#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1818 ev_init (&pipe_w, pipecb);
1819 ev_set_priority (&pipe_w, EV_MAXPRI);
1820#endif
1821 }
1822}
1823
1824/* free up a loop structure */
1825void
1826ev_loop_destroy (EV_P)
1827{
1828 int i;
1829
1830#if EV_MULTIPLICITY
1831 /* mimic free (0) */
1832 if (!EV_A)
1833 return;
1834#endif
1835
1836#if EV_CLEANUP_ENABLE
1837 /* queue cleanup watchers (and execute them) */
1838 if (expect_false (cleanupcnt))
1839 {
1840 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1841 EV_INVOKE_PENDING;
1842 }
1843#endif
1844
1845#if EV_CHILD_ENABLE
1846 if (ev_is_active (&childev))
1847 {
1848 ev_ref (EV_A); /* child watcher */
1849 ev_signal_stop (EV_A_ &childev);
1850 }
1851#endif
1852
1853 if (ev_is_active (&pipe_w))
1854 {
1855 /*ev_ref (EV_A);*/
1856 /*ev_io_stop (EV_A_ &pipe_w);*/
1857
1858#if EV_USE_EVENTFD
1859 if (evfd >= 0)
1860 close (evfd);
1861#endif
1862
1863 if (evpipe [0] >= 0)
1864 {
1865 EV_WIN32_CLOSE_FD (evpipe [0]);
1866 EV_WIN32_CLOSE_FD (evpipe [1]);
1867 }
1868 }
1869
1870#if EV_USE_SIGNALFD
1871 if (ev_is_active (&sigfd_w))
1872 close (sigfd);
1873#endif
1874
1875#if EV_USE_INOTIFY
1876 if (fs_fd >= 0)
1877 close (fs_fd);
1878#endif
1879
1880 if (backend_fd >= 0)
1881 close (backend_fd);
1882
1883#if EV_USE_IOCP
1884 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1885#endif
1886#if EV_USE_PORT
1887 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1888#endif
1889#if EV_USE_KQUEUE
1890 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1891#endif
1892#if EV_USE_EPOLL
1893 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1894#endif
1895#if EV_USE_POLL
1896 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1897#endif
1898#if EV_USE_SELECT
1899 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1900#endif
1901
1902 for (i = NUMPRI; i--; )
1903 {
1904 array_free (pending, [i]);
1905#if EV_IDLE_ENABLE
1906 array_free (idle, [i]);
1907#endif
1908 }
1909
1910 ev_free (anfds); anfds = 0; anfdmax = 0;
1911
1912 /* have to use the microsoft-never-gets-it-right macro */
1913 array_free (rfeed, EMPTY);
1914 array_free (fdchange, EMPTY);
1915 array_free (timer, EMPTY);
1916#if EV_PERIODIC_ENABLE
1917 array_free (periodic, EMPTY);
1918#endif
1919#if EV_FORK_ENABLE
1920 array_free (fork, EMPTY);
1921#endif
1922#if EV_CLEANUP_ENABLE
1923 array_free (cleanup, EMPTY);
1924#endif
1925 array_free (prepare, EMPTY);
1926 array_free (check, EMPTY);
1927#if EV_ASYNC_ENABLE
1928 array_free (async, EMPTY);
1929#endif
1930
1931 backend = 0;
1932
1933#if EV_MULTIPLICITY
1934 if (ev_is_default_loop (EV_A))
1935#endif
1936 ev_default_loop_ptr = 0;
1937#if EV_MULTIPLICITY
1938 else
1939 ev_free (EV_A);
1940#endif
1941}
1942
1943#if EV_USE_INOTIFY
1944inline_size void infy_fork (EV_P);
1945#endif
1946
1947inline_size void
1948loop_fork (EV_P)
1949{
1950#if EV_USE_PORT
1951 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1952#endif
1953#if EV_USE_KQUEUE
1954 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1955#endif
1956#if EV_USE_EPOLL
1957 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1958#endif
1959#if EV_USE_INOTIFY
1960 infy_fork (EV_A);
1961#endif
1962
1963 if (ev_is_active (&pipe_w))
1964 {
1965 /* this "locks" the handlers against writing to the pipe */
1966 /* while we modify the fd vars */
1967 sig_pending = 1;
1968#if EV_ASYNC_ENABLE
1969 async_pending = 1;
1970#endif
1971
1972 ev_ref (EV_A);
1973 ev_io_stop (EV_A_ &pipe_w);
1974
1975#if EV_USE_EVENTFD
1976 if (evfd >= 0)
1977 close (evfd);
1978#endif
1979
1980 if (evpipe [0] >= 0)
1981 {
1982 EV_WIN32_CLOSE_FD (evpipe [0]);
1983 EV_WIN32_CLOSE_FD (evpipe [1]);
1984 }
1985
1986#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1987 evpipe_init (EV_A);
1988 /* now iterate over everything, in case we missed something */
1989 pipecb (EV_A_ &pipe_w, EV_READ);
1990#endif
1991 }
1992
1993 postfork = 0;
1994}
1995
1996#if EV_MULTIPLICITY
1997
1998struct ev_loop *
1999ev_loop_new (unsigned int flags)
2000{
2001 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2002
2003 memset (EV_A, 0, sizeof (struct ev_loop));
2004 loop_init (EV_A_ flags);
2005
2006 if (ev_backend (EV_A))
2007 return EV_A;
2008
2009 ev_free (EV_A);
2010 return 0;
2011}
2012
2013#endif /* multiplicity */
2014
2015#if EV_VERIFY
2016static void noinline
2017verify_watcher (EV_P_ W w)
2018{
2019 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2020
2021 if (w->pending)
2022 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2023}
2024
2025static void noinline
2026verify_heap (EV_P_ ANHE *heap, int N)
2027{
2028 int i;
2029
2030 for (i = HEAP0; i < N + HEAP0; ++i)
2031 {
2032 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2033 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2034 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2035
2036 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2037 }
2038}
2039
2040static void noinline
2041array_verify (EV_P_ W *ws, int cnt)
2042{
2043 while (cnt--)
2044 {
2045 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2046 verify_watcher (EV_A_ ws [cnt]);
2047 }
2048}
2049#endif
2050
2051#if EV_FEATURE_API
2052void
2053ev_verify (EV_P)
2054{
2055#if EV_VERIFY
2056 int i;
2057 WL w;
2058
2059 assert (activecnt >= -1);
2060
2061 assert (fdchangemax >= fdchangecnt);
2062 for (i = 0; i < fdchangecnt; ++i)
2063 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2064
2065 assert (anfdmax >= 0);
2066 for (i = 0; i < anfdmax; ++i)
2067 for (w = anfds [i].head; w; w = w->next)
742 { 2068 {
743 struct timespec ts; 2069 verify_watcher (EV_A_ (W)w);
744 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2070 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
745 have_monotonic = 1; 2071 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
746 } 2072 }
747#endif
748 2073
749 ev_rt_now = ev_time (); 2074 assert (timermax >= timercnt);
750 mn_now = get_clock (); 2075 verify_heap (EV_A_ timers, timercnt);
751 now_floor = mn_now;
752 rtmn_diff = ev_rt_now - mn_now;
753 2076
754 if (methods == EVMETHOD_AUTO) 2077#if EV_PERIODIC_ENABLE
755 if (!enable_secure () && getenv ("LIBEV_METHODS")) 2078 assert (periodicmax >= periodiccnt);
756 methods = atoi (getenv ("LIBEV_METHODS")); 2079 verify_heap (EV_A_ periodics, periodiccnt);
757 else
758 methods = EVMETHOD_ANY;
759
760 method = 0;
761#if EV_USE_WIN32
762 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
763#endif
764#if EV_USE_KQUEUE
765 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
766#endif
767#if EV_USE_EPOLL
768 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
769#endif
770#if EV_USE_POLL
771 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
772#endif
773#if EV_USE_SELECT
774 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
775#endif
776
777 ev_init (&sigev, sigcb);
778 ev_set_priority (&sigev, EV_MAXPRI);
779 }
780}
781
782void
783loop_destroy (EV_P)
784{
785 int i;
786
787#if EV_USE_WIN32
788 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
789#endif
790#if EV_USE_KQUEUE
791 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
792#endif
793#if EV_USE_EPOLL
794 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
795#endif
796#if EV_USE_POLL
797 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
798#endif
799#if EV_USE_SELECT
800 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
801#endif 2080#endif
802 2081
803 for (i = NUMPRI; i--; ) 2082 for (i = NUMPRI; i--; )
804 array_free (pending, [i]); 2083 {
2084 assert (pendingmax [i] >= pendingcnt [i]);
2085#if EV_IDLE_ENABLE
2086 assert (idleall >= 0);
2087 assert (idlemax [i] >= idlecnt [i]);
2088 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2089#endif
2090 }
805 2091
806 /* have to use the microsoft-never-gets-it-right macro */ 2092#if EV_FORK_ENABLE
807 array_free_microshit (fdchange); 2093 assert (forkmax >= forkcnt);
808 array_free_microshit (timer); 2094 array_verify (EV_A_ (W *)forks, forkcnt);
809 array_free_microshit (periodic); 2095#endif
810 array_free_microshit (idle);
811 array_free_microshit (prepare);
812 array_free_microshit (check);
813 2096
814 method = 0; 2097#if EV_CLEANUP_ENABLE
815} 2098 assert (cleanupmax >= cleanupcnt);
2099 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2100#endif
816 2101
817static void 2102#if EV_ASYNC_ENABLE
818loop_fork (EV_P) 2103 assert (asyncmax >= asynccnt);
819{ 2104 array_verify (EV_A_ (W *)asyncs, asynccnt);
820#if EV_USE_EPOLL 2105#endif
821 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 2106
2107#if EV_PREPARE_ENABLE
2108 assert (preparemax >= preparecnt);
2109 array_verify (EV_A_ (W *)prepares, preparecnt);
2110#endif
2111
2112#if EV_CHECK_ENABLE
2113 assert (checkmax >= checkcnt);
2114 array_verify (EV_A_ (W *)checks, checkcnt);
2115#endif
2116
2117# if 0
2118#if EV_CHILD_ENABLE
2119 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2120 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2121#endif
822#endif 2122# endif
823#if EV_USE_KQUEUE
824 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
825#endif 2123#endif
826
827 if (ev_is_active (&sigev))
828 {
829 /* default loop */
830
831 ev_ref (EV_A);
832 ev_io_stop (EV_A_ &sigev);
833 close (sigpipe [0]);
834 close (sigpipe [1]);
835
836 while (pipe (sigpipe))
837 syserr ("(libev) error creating pipe");
838
839 siginit (EV_A);
840 }
841
842 postfork = 0;
843} 2124}
844
845#if EV_MULTIPLICITY
846struct ev_loop *
847ev_loop_new (int methods)
848{
849 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
850
851 memset (loop, 0, sizeof (struct ev_loop));
852
853 loop_init (EV_A_ methods);
854
855 if (ev_method (EV_A))
856 return loop;
857
858 return 0;
859}
860
861void
862ev_loop_destroy (EV_P)
863{
864 loop_destroy (EV_A);
865 ev_free (loop);
866}
867
868void
869ev_loop_fork (EV_P)
870{
871 postfork = 1;
872}
873
874#endif 2125#endif
875 2126
876#if EV_MULTIPLICITY 2127#if EV_MULTIPLICITY
877struct ev_loop * 2128struct ev_loop *
878#else 2129#else
879int 2130int
880#endif 2131#endif
881ev_default_loop (int methods) 2132ev_default_loop (unsigned int flags)
882{ 2133{
883 if (sigpipe [0] == sigpipe [1])
884 if (pipe (sigpipe))
885 return 0;
886
887 if (!default_loop) 2134 if (!ev_default_loop_ptr)
888 { 2135 {
889#if EV_MULTIPLICITY 2136#if EV_MULTIPLICITY
890 struct ev_loop *loop = default_loop = &default_loop_struct; 2137 EV_P = ev_default_loop_ptr = &default_loop_struct;
891#else 2138#else
892 default_loop = 1; 2139 ev_default_loop_ptr = 1;
893#endif 2140#endif
894 2141
895 loop_init (EV_A_ methods); 2142 loop_init (EV_A_ flags);
896 2143
897 if (ev_method (EV_A)) 2144 if (ev_backend (EV_A))
898 { 2145 {
899 siginit (EV_A); 2146#if EV_CHILD_ENABLE
900
901#ifndef WIN32
902 ev_signal_init (&childev, childcb, SIGCHLD); 2147 ev_signal_init (&childev, childcb, SIGCHLD);
903 ev_set_priority (&childev, EV_MAXPRI); 2148 ev_set_priority (&childev, EV_MAXPRI);
904 ev_signal_start (EV_A_ &childev); 2149 ev_signal_start (EV_A_ &childev);
905 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2150 ev_unref (EV_A); /* child watcher should not keep loop alive */
906#endif 2151#endif
907 } 2152 }
908 else 2153 else
909 default_loop = 0; 2154 ev_default_loop_ptr = 0;
910 } 2155 }
911 2156
912 return default_loop; 2157 return ev_default_loop_ptr;
913} 2158}
914 2159
915void 2160void
916ev_default_destroy (void) 2161ev_loop_fork (EV_P)
917{ 2162{
918#if EV_MULTIPLICITY 2163 postfork = 1; /* must be in line with ev_default_fork */
919 struct ev_loop *loop = default_loop;
920#endif
921
922#ifndef WIN32
923 ev_ref (EV_A); /* child watcher */
924 ev_signal_stop (EV_A_ &childev);
925#endif
926
927 ev_ref (EV_A); /* signal watcher */
928 ev_io_stop (EV_A_ &sigev);
929
930 close (sigpipe [0]); sigpipe [0] = 0;
931 close (sigpipe [1]); sigpipe [1] = 0;
932
933 loop_destroy (EV_A);
934}
935
936void
937ev_default_fork (void)
938{
939#if EV_MULTIPLICITY
940 struct ev_loop *loop = default_loop;
941#endif
942
943 if (method)
944 postfork = 1;
945} 2164}
946 2165
947/*****************************************************************************/ 2166/*****************************************************************************/
948 2167
949static int 2168void
950any_pending (EV_P) 2169ev_invoke (EV_P_ void *w, int revents)
2170{
2171 EV_CB_INVOKE ((W)w, revents);
2172}
2173
2174unsigned int
2175ev_pending_count (EV_P)
951{ 2176{
952 int pri; 2177 int pri;
2178 unsigned int count = 0;
953 2179
954 for (pri = NUMPRI; pri--; ) 2180 for (pri = NUMPRI; pri--; )
955 if (pendingcnt [pri]) 2181 count += pendingcnt [pri];
956 return 1;
957 2182
958 return 0; 2183 return count;
959} 2184}
960 2185
961static void 2186void noinline
962call_pending (EV_P) 2187ev_invoke_pending (EV_P)
963{ 2188{
964 int pri; 2189 int pri;
965 2190
966 for (pri = NUMPRI; pri--; ) 2191 for (pri = NUMPRI; pri--; )
967 while (pendingcnt [pri]) 2192 while (pendingcnt [pri])
968 { 2193 {
969 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2194 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
970 2195
971 if (p->w)
972 {
973 p->w->pending = 0; 2196 p->w->pending = 0;
974 EV_CB_INVOKE (p->w, p->events); 2197 EV_CB_INVOKE (p->w, p->events);
975 } 2198 EV_FREQUENT_CHECK;
976 } 2199 }
977} 2200}
978 2201
979static void 2202#if EV_IDLE_ENABLE
2203/* make idle watchers pending. this handles the "call-idle */
2204/* only when higher priorities are idle" logic */
2205inline_size void
2206idle_reify (EV_P)
2207{
2208 if (expect_false (idleall))
2209 {
2210 int pri;
2211
2212 for (pri = NUMPRI; pri--; )
2213 {
2214 if (pendingcnt [pri])
2215 break;
2216
2217 if (idlecnt [pri])
2218 {
2219 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
2220 break;
2221 }
2222 }
2223 }
2224}
2225#endif
2226
2227/* make timers pending */
2228inline_size void
980timers_reify (EV_P) 2229timers_reify (EV_P)
981{ 2230{
2231 EV_FREQUENT_CHECK;
2232
982 while (timercnt && ((WT)timers [0])->at <= mn_now) 2233 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
983 { 2234 {
984 struct ev_timer *w = timers [0]; 2235 do
985
986 assert (("inactive timer on timer heap detected", ev_is_active (w)));
987
988 /* first reschedule or stop timer */
989 if (w->repeat)
990 { 2236 {
2237 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2238
2239 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2240
2241 /* first reschedule or stop timer */
2242 if (w->repeat)
2243 {
2244 ev_at (w) += w->repeat;
2245 if (ev_at (w) < mn_now)
2246 ev_at (w) = mn_now;
2247
991 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2248 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
992 ((WT)w)->at = mn_now + w->repeat; 2249
2250 ANHE_at_cache (timers [HEAP0]);
993 downheap ((WT *)timers, timercnt, 0); 2251 downheap (timers, timercnt, HEAP0);
2252 }
2253 else
2254 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2255
2256 EV_FREQUENT_CHECK;
2257 feed_reverse (EV_A_ (W)w);
994 } 2258 }
995 else 2259 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
996 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
997 2260
998 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2261 feed_reverse_done (EV_A_ EV_TIMER);
2262 }
2263}
2264
2265#if EV_PERIODIC_ENABLE
2266
2267static void noinline
2268periodic_recalc (EV_P_ ev_periodic *w)
2269{
2270 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2271 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2272
2273 /* the above almost always errs on the low side */
2274 while (at <= ev_rt_now)
999 } 2275 {
1000} 2276 ev_tstamp nat = at + w->interval;
1001 2277
1002static void 2278 /* when resolution fails us, we use ev_rt_now */
2279 if (expect_false (nat == at))
2280 {
2281 at = ev_rt_now;
2282 break;
2283 }
2284
2285 at = nat;
2286 }
2287
2288 ev_at (w) = at;
2289}
2290
2291/* make periodics pending */
2292inline_size void
1003periodics_reify (EV_P) 2293periodics_reify (EV_P)
1004{ 2294{
2295 EV_FREQUENT_CHECK;
2296
1005 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 2297 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1006 { 2298 {
1007 struct ev_periodic *w = periodics [0]; 2299 int feed_count = 0;
1008 2300
2301 do
2302 {
2303 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2304
1009 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 2305 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1010 2306
1011 /* first reschedule or stop timer */ 2307 /* first reschedule or stop timer */
2308 if (w->reschedule_cb)
2309 {
2310 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2311
2312 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2313
2314 ANHE_at_cache (periodics [HEAP0]);
2315 downheap (periodics, periodiccnt, HEAP0);
2316 }
2317 else if (w->interval)
2318 {
2319 periodic_recalc (EV_A_ w);
2320 ANHE_at_cache (periodics [HEAP0]);
2321 downheap (periodics, periodiccnt, HEAP0);
2322 }
2323 else
2324 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2325
2326 EV_FREQUENT_CHECK;
2327 feed_reverse (EV_A_ (W)w);
2328 }
2329 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2330
2331 feed_reverse_done (EV_A_ EV_PERIODIC);
2332 }
2333}
2334
2335/* simply recalculate all periodics */
2336/* TODO: maybe ensure that at least one event happens when jumping forward? */
2337static void noinline
2338periodics_reschedule (EV_P)
2339{
2340 int i;
2341
2342 /* adjust periodics after time jump */
2343 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2344 {
2345 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2346
1012 if (w->reschedule_cb) 2347 if (w->reschedule_cb)
2348 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2349 else if (w->interval)
2350 periodic_recalc (EV_A_ w);
2351
2352 ANHE_at_cache (periodics [i]);
2353 }
2354
2355 reheap (periodics, periodiccnt);
2356}
2357#endif
2358
2359/* adjust all timers by a given offset */
2360static void noinline
2361timers_reschedule (EV_P_ ev_tstamp adjust)
2362{
2363 int i;
2364
2365 for (i = 0; i < timercnt; ++i)
2366 {
2367 ANHE *he = timers + i + HEAP0;
2368 ANHE_w (*he)->at += adjust;
2369 ANHE_at_cache (*he);
2370 }
2371}
2372
2373/* fetch new monotonic and realtime times from the kernel */
2374/* also detect if there was a timejump, and act accordingly */
2375inline_speed void
2376time_update (EV_P_ ev_tstamp max_block)
2377{
2378#if EV_USE_MONOTONIC
2379 if (expect_true (have_monotonic))
2380 {
2381 int i;
2382 ev_tstamp odiff = rtmn_diff;
2383
2384 mn_now = get_clock ();
2385
2386 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2387 /* interpolate in the meantime */
2388 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1013 { 2389 {
1014 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 2390 ev_rt_now = rtmn_diff + mn_now;
1015 2391 return;
1016 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1017 downheap ((WT *)periodics, periodiccnt, 0);
1018 } 2392 }
1019 else if (w->interval)
1020 {
1021 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1022 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1023 downheap ((WT *)periodics, periodiccnt, 0);
1024 }
1025 else
1026 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1027 2393
1028 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1029 }
1030}
1031
1032static void
1033periodics_reschedule (EV_P)
1034{
1035 int i;
1036
1037 /* adjust periodics after time jump */
1038 for (i = 0; i < periodiccnt; ++i)
1039 {
1040 struct ev_periodic *w = periodics [i];
1041
1042 if (w->reschedule_cb)
1043 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1044 else if (w->interval)
1045 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1046 }
1047
1048 /* now rebuild the heap */
1049 for (i = periodiccnt >> 1; i--; )
1050 downheap ((WT *)periodics, periodiccnt, i);
1051}
1052
1053inline int
1054time_update_monotonic (EV_P)
1055{
1056 mn_now = get_clock ();
1057
1058 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1059 {
1060 ev_rt_now = rtmn_diff + mn_now;
1061 return 0;
1062 }
1063 else
1064 {
1065 now_floor = mn_now; 2394 now_floor = mn_now;
1066 ev_rt_now = ev_time (); 2395 ev_rt_now = ev_time ();
1067 return 1;
1068 }
1069}
1070 2396
1071static void 2397 /* loop a few times, before making important decisions.
1072time_update (EV_P) 2398 * on the choice of "4": one iteration isn't enough,
1073{ 2399 * in case we get preempted during the calls to
1074 int i; 2400 * ev_time and get_clock. a second call is almost guaranteed
1075 2401 * to succeed in that case, though. and looping a few more times
1076#if EV_USE_MONOTONIC 2402 * doesn't hurt either as we only do this on time-jumps or
1077 if (expect_true (have_monotonic)) 2403 * in the unlikely event of having been preempted here.
1078 { 2404 */
1079 if (time_update_monotonic (EV_A)) 2405 for (i = 4; --i; )
1080 { 2406 {
1081 ev_tstamp odiff = rtmn_diff; 2407 ev_tstamp diff;
1082
1083 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1084 {
1085 rtmn_diff = ev_rt_now - mn_now; 2408 rtmn_diff = ev_rt_now - mn_now;
1086 2409
1087 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2410 diff = odiff - rtmn_diff;
2411
2412 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1088 return; /* all is well */ 2413 return; /* all is well */
1089 2414
1090 ev_rt_now = ev_time (); 2415 ev_rt_now = ev_time ();
1091 mn_now = get_clock (); 2416 mn_now = get_clock ();
1092 now_floor = mn_now; 2417 now_floor = mn_now;
1093 } 2418 }
1094 2419
2420 /* no timer adjustment, as the monotonic clock doesn't jump */
2421 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
2422# if EV_PERIODIC_ENABLE
2423 periodics_reschedule (EV_A);
2424# endif
2425 }
2426 else
2427#endif
2428 {
2429 ev_rt_now = ev_time ();
2430
2431 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2432 {
2433 /* adjust timers. this is easy, as the offset is the same for all of them */
2434 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2435#if EV_PERIODIC_ENABLE
1095 periodics_reschedule (EV_A); 2436 periodics_reschedule (EV_A);
1096 /* no timer adjustment, as the monotonic clock doesn't jump */ 2437#endif
1097 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1098 } 2438 }
1099 }
1100 else
1101#endif
1102 {
1103 ev_rt_now = ev_time ();
1104
1105 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1106 {
1107 periodics_reschedule (EV_A);
1108
1109 /* adjust timers. this is easy, as the offset is the same for all */
1110 for (i = 0; i < timercnt; ++i)
1111 ((WT)timers [i])->at += ev_rt_now - mn_now;
1112 }
1113 2439
1114 mn_now = ev_rt_now; 2440 mn_now = ev_rt_now;
1115 } 2441 }
1116} 2442}
1117 2443
1118void 2444void
1119ev_ref (EV_P)
1120{
1121 ++activecnt;
1122}
1123
1124void
1125ev_unref (EV_P)
1126{
1127 --activecnt;
1128}
1129
1130static int loop_done;
1131
1132void
1133ev_loop (EV_P_ int flags) 2445ev_run (EV_P_ int flags)
1134{ 2446{
1135 double block; 2447#if EV_FEATURE_API
1136 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 2448 ++loop_depth;
2449#endif
2450
2451 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2452
2453 loop_done = EVBREAK_CANCEL;
2454
2455 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1137 2456
1138 do 2457 do
1139 { 2458 {
2459#if EV_VERIFY >= 2
2460 ev_verify (EV_A);
2461#endif
2462
2463#ifndef _WIN32
2464 if (expect_false (curpid)) /* penalise the forking check even more */
2465 if (expect_false (getpid () != curpid))
2466 {
2467 curpid = getpid ();
2468 postfork = 1;
2469 }
2470#endif
2471
2472#if EV_FORK_ENABLE
2473 /* we might have forked, so queue fork handlers */
2474 if (expect_false (postfork))
2475 if (forkcnt)
2476 {
2477 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2478 EV_INVOKE_PENDING;
2479 }
2480#endif
2481
2482#if EV_PREPARE_ENABLE
1140 /* queue check watchers (and execute them) */ 2483 /* queue prepare watchers (and execute them) */
1141 if (expect_false (preparecnt)) 2484 if (expect_false (preparecnt))
1142 { 2485 {
1143 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2486 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1144 call_pending (EV_A); 2487 EV_INVOKE_PENDING;
1145 } 2488 }
2489#endif
2490
2491 if (expect_false (loop_done))
2492 break;
1146 2493
1147 /* we might have forked, so reify kernel state if necessary */ 2494 /* we might have forked, so reify kernel state if necessary */
1148 if (expect_false (postfork)) 2495 if (expect_false (postfork))
1149 loop_fork (EV_A); 2496 loop_fork (EV_A);
1150 2497
1151 /* update fd-related kernel structures */ 2498 /* update fd-related kernel structures */
1152 fd_reify (EV_A); 2499 fd_reify (EV_A);
1153 2500
1154 /* calculate blocking time */ 2501 /* calculate blocking time */
2502 {
2503 ev_tstamp waittime = 0.;
2504 ev_tstamp sleeptime = 0.;
1155 2505
1156 /* we only need this for !monotonic clock or timers, but as we basically 2506 /* remember old timestamp for io_blocktime calculation */
1157 always have timers, we just calculate it always */ 2507 ev_tstamp prev_mn_now = mn_now;
1158#if EV_USE_MONOTONIC 2508
1159 if (expect_true (have_monotonic)) 2509 /* update time to cancel out callback processing overhead */
1160 time_update_monotonic (EV_A); 2510 time_update (EV_A_ 1e100);
1161 else 2511
1162#endif 2512 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1163 { 2513 {
1164 ev_rt_now = ev_time ();
1165 mn_now = ev_rt_now;
1166 }
1167
1168 if (flags & EVLOOP_NONBLOCK || idlecnt)
1169 block = 0.;
1170 else
1171 {
1172 block = MAX_BLOCKTIME; 2514 waittime = MAX_BLOCKTIME;
1173 2515
1174 if (timercnt) 2516 if (timercnt)
1175 { 2517 {
1176 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 2518 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1177 if (block > to) block = to; 2519 if (waittime > to) waittime = to;
1178 } 2520 }
1179 2521
2522#if EV_PERIODIC_ENABLE
1180 if (periodiccnt) 2523 if (periodiccnt)
1181 { 2524 {
1182 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 2525 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1183 if (block > to) block = to; 2526 if (waittime > to) waittime = to;
1184 } 2527 }
2528#endif
1185 2529
1186 if (block < 0.) block = 0.; 2530 /* don't let timeouts decrease the waittime below timeout_blocktime */
2531 if (expect_false (waittime < timeout_blocktime))
2532 waittime = timeout_blocktime;
2533
2534 /* extra check because io_blocktime is commonly 0 */
2535 if (expect_false (io_blocktime))
2536 {
2537 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2538
2539 if (sleeptime > waittime - backend_fudge)
2540 sleeptime = waittime - backend_fudge;
2541
2542 if (expect_true (sleeptime > 0.))
2543 {
2544 ev_sleep (sleeptime);
2545 waittime -= sleeptime;
2546 }
2547 }
1187 } 2548 }
1188 2549
1189 method_poll (EV_A_ block); 2550#if EV_FEATURE_API
2551 ++loop_count;
2552#endif
2553 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2554 backend_poll (EV_A_ waittime);
2555 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1190 2556
1191 /* update ev_rt_now, do magic */ 2557 /* update ev_rt_now, do magic */
1192 time_update (EV_A); 2558 time_update (EV_A_ waittime + sleeptime);
2559 }
1193 2560
1194 /* queue pending timers and reschedule them */ 2561 /* queue pending timers and reschedule them */
1195 timers_reify (EV_A); /* relative timers called last */ 2562 timers_reify (EV_A); /* relative timers called last */
2563#if EV_PERIODIC_ENABLE
1196 periodics_reify (EV_A); /* absolute timers called first */ 2564 periodics_reify (EV_A); /* absolute timers called first */
2565#endif
1197 2566
2567#if EV_IDLE_ENABLE
1198 /* queue idle watchers unless io or timers are pending */ 2568 /* queue idle watchers unless other events are pending */
1199 if (idlecnt && !any_pending (EV_A)) 2569 idle_reify (EV_A);
1200 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2570#endif
1201 2571
2572#if EV_CHECK_ENABLE
1202 /* queue check watchers, to be executed first */ 2573 /* queue check watchers, to be executed first */
1203 if (checkcnt) 2574 if (expect_false (checkcnt))
1204 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2575 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2576#endif
1205 2577
1206 call_pending (EV_A); 2578 EV_INVOKE_PENDING;
1207 } 2579 }
1208 while (activecnt && !loop_done); 2580 while (expect_true (
2581 activecnt
2582 && !loop_done
2583 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2584 ));
1209 2585
1210 if (loop_done != 2) 2586 if (loop_done == EVBREAK_ONE)
1211 loop_done = 0; 2587 loop_done = EVBREAK_CANCEL;
1212}
1213 2588
2589#if EV_FEATURE_API
2590 --loop_depth;
2591#endif
2592}
2593
1214void 2594void
1215ev_unloop (EV_P_ int how) 2595ev_break (EV_P_ int how)
1216{ 2596{
1217 loop_done = how; 2597 loop_done = how;
1218} 2598}
1219 2599
2600void
2601ev_ref (EV_P)
2602{
2603 ++activecnt;
2604}
2605
2606void
2607ev_unref (EV_P)
2608{
2609 --activecnt;
2610}
2611
2612void
2613ev_now_update (EV_P)
2614{
2615 time_update (EV_A_ 1e100);
2616}
2617
2618void
2619ev_suspend (EV_P)
2620{
2621 ev_now_update (EV_A);
2622}
2623
2624void
2625ev_resume (EV_P)
2626{
2627 ev_tstamp mn_prev = mn_now;
2628
2629 ev_now_update (EV_A);
2630 timers_reschedule (EV_A_ mn_now - mn_prev);
2631#if EV_PERIODIC_ENABLE
2632 /* TODO: really do this? */
2633 periodics_reschedule (EV_A);
2634#endif
2635}
2636
1220/*****************************************************************************/ 2637/*****************************************************************************/
2638/* singly-linked list management, used when the expected list length is short */
1221 2639
1222inline void 2640inline_size void
1223wlist_add (WL *head, WL elem) 2641wlist_add (WL *head, WL elem)
1224{ 2642{
1225 elem->next = *head; 2643 elem->next = *head;
1226 *head = elem; 2644 *head = elem;
1227} 2645}
1228 2646
1229inline void 2647inline_size void
1230wlist_del (WL *head, WL elem) 2648wlist_del (WL *head, WL elem)
1231{ 2649{
1232 while (*head) 2650 while (*head)
1233 { 2651 {
1234 if (*head == elem) 2652 if (expect_true (*head == elem))
1235 { 2653 {
1236 *head = elem->next; 2654 *head = elem->next;
1237 return; 2655 break;
1238 } 2656 }
1239 2657
1240 head = &(*head)->next; 2658 head = &(*head)->next;
1241 } 2659 }
1242} 2660}
1243 2661
2662/* internal, faster, version of ev_clear_pending */
1244inline void 2663inline_speed void
1245ev_clear_pending (EV_P_ W w) 2664clear_pending (EV_P_ W w)
1246{ 2665{
1247 if (w->pending) 2666 if (w->pending)
1248 { 2667 {
1249 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2668 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1250 w->pending = 0; 2669 w->pending = 0;
1251 } 2670 }
1252} 2671}
1253 2672
2673int
2674ev_clear_pending (EV_P_ void *w)
2675{
2676 W w_ = (W)w;
2677 int pending = w_->pending;
2678
2679 if (expect_true (pending))
2680 {
2681 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2682 p->w = (W)&pending_w;
2683 w_->pending = 0;
2684 return p->events;
2685 }
2686 else
2687 return 0;
2688}
2689
1254inline void 2690inline_size void
2691pri_adjust (EV_P_ W w)
2692{
2693 int pri = ev_priority (w);
2694 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2695 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2696 ev_set_priority (w, pri);
2697}
2698
2699inline_speed void
1255ev_start (EV_P_ W w, int active) 2700ev_start (EV_P_ W w, int active)
1256{ 2701{
1257 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2702 pri_adjust (EV_A_ w);
1258 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1259
1260 w->active = active; 2703 w->active = active;
1261 ev_ref (EV_A); 2704 ev_ref (EV_A);
1262} 2705}
1263 2706
1264inline void 2707inline_size void
1265ev_stop (EV_P_ W w) 2708ev_stop (EV_P_ W w)
1266{ 2709{
1267 ev_unref (EV_A); 2710 ev_unref (EV_A);
1268 w->active = 0; 2711 w->active = 0;
1269} 2712}
1270 2713
1271/*****************************************************************************/ 2714/*****************************************************************************/
1272 2715
1273void 2716void noinline
1274ev_io_start (EV_P_ struct ev_io *w) 2717ev_io_start (EV_P_ ev_io *w)
1275{ 2718{
1276 int fd = w->fd; 2719 int fd = w->fd;
1277 2720
2721 if (expect_false (ev_is_active (w)))
2722 return;
2723
2724 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2725 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2726
2727 EV_FREQUENT_CHECK;
2728
2729 ev_start (EV_A_ (W)w, 1);
2730 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2731 wlist_add (&anfds[fd].head, (WL)w);
2732
2733 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2734 w->events &= ~EV__IOFDSET;
2735
2736 EV_FREQUENT_CHECK;
2737}
2738
2739void noinline
2740ev_io_stop (EV_P_ ev_io *w)
2741{
2742 clear_pending (EV_A_ (W)w);
2743 if (expect_false (!ev_is_active (w)))
2744 return;
2745
2746 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2747
2748 EV_FREQUENT_CHECK;
2749
2750 wlist_del (&anfds[w->fd].head, (WL)w);
2751 ev_stop (EV_A_ (W)w);
2752
2753 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2754
2755 EV_FREQUENT_CHECK;
2756}
2757
2758void noinline
2759ev_timer_start (EV_P_ ev_timer *w)
2760{
2761 if (expect_false (ev_is_active (w)))
2762 return;
2763
2764 ev_at (w) += mn_now;
2765
2766 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2767
2768 EV_FREQUENT_CHECK;
2769
2770 ++timercnt;
2771 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2772 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2773 ANHE_w (timers [ev_active (w)]) = (WT)w;
2774 ANHE_at_cache (timers [ev_active (w)]);
2775 upheap (timers, ev_active (w));
2776
2777 EV_FREQUENT_CHECK;
2778
2779 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2780}
2781
2782void noinline
2783ev_timer_stop (EV_P_ ev_timer *w)
2784{
2785 clear_pending (EV_A_ (W)w);
2786 if (expect_false (!ev_is_active (w)))
2787 return;
2788
2789 EV_FREQUENT_CHECK;
2790
2791 {
2792 int active = ev_active (w);
2793
2794 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2795
2796 --timercnt;
2797
2798 if (expect_true (active < timercnt + HEAP0))
2799 {
2800 timers [active] = timers [timercnt + HEAP0];
2801 adjustheap (timers, timercnt, active);
2802 }
2803 }
2804
2805 ev_at (w) -= mn_now;
2806
2807 ev_stop (EV_A_ (W)w);
2808
2809 EV_FREQUENT_CHECK;
2810}
2811
2812void noinline
2813ev_timer_again (EV_P_ ev_timer *w)
2814{
2815 EV_FREQUENT_CHECK;
2816
1278 if (ev_is_active (w)) 2817 if (ev_is_active (w))
1279 return;
1280
1281 assert (("ev_io_start called with negative fd", fd >= 0));
1282
1283 ev_start (EV_A_ (W)w, 1);
1284 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1285 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1286
1287 fd_change (EV_A_ fd);
1288}
1289
1290void
1291ev_io_stop (EV_P_ struct ev_io *w)
1292{
1293 ev_clear_pending (EV_A_ (W)w);
1294 if (!ev_is_active (w))
1295 return;
1296
1297 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1298
1299 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1300 ev_stop (EV_A_ (W)w);
1301
1302 fd_change (EV_A_ w->fd);
1303}
1304
1305void
1306ev_timer_start (EV_P_ struct ev_timer *w)
1307{
1308 if (ev_is_active (w))
1309 return;
1310
1311 ((WT)w)->at += mn_now;
1312
1313 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1314
1315 ev_start (EV_A_ (W)w, ++timercnt);
1316 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1317 timers [timercnt - 1] = w;
1318 upheap ((WT *)timers, timercnt - 1);
1319
1320 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1321}
1322
1323void
1324ev_timer_stop (EV_P_ struct ev_timer *w)
1325{
1326 ev_clear_pending (EV_A_ (W)w);
1327 if (!ev_is_active (w))
1328 return;
1329
1330 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1331
1332 if (((W)w)->active < timercnt--)
1333 {
1334 timers [((W)w)->active - 1] = timers [timercnt];
1335 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1336 }
1337
1338 ((WT)w)->at = w->repeat;
1339
1340 ev_stop (EV_A_ (W)w);
1341}
1342
1343void
1344ev_timer_again (EV_P_ struct ev_timer *w)
1345{
1346 if (ev_is_active (w))
1347 { 2818 {
1348 if (w->repeat) 2819 if (w->repeat)
1349 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 2820 {
2821 ev_at (w) = mn_now + w->repeat;
2822 ANHE_at_cache (timers [ev_active (w)]);
2823 adjustheap (timers, timercnt, ev_active (w));
2824 }
1350 else 2825 else
1351 ev_timer_stop (EV_A_ w); 2826 ev_timer_stop (EV_A_ w);
1352 } 2827 }
1353 else if (w->repeat) 2828 else if (w->repeat)
2829 {
2830 ev_at (w) = w->repeat;
1354 ev_timer_start (EV_A_ w); 2831 ev_timer_start (EV_A_ w);
1355} 2832 }
1356 2833
1357void 2834 EV_FREQUENT_CHECK;
2835}
2836
2837ev_tstamp
2838ev_timer_remaining (EV_P_ ev_timer *w)
2839{
2840 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2841}
2842
2843#if EV_PERIODIC_ENABLE
2844void noinline
1358ev_periodic_start (EV_P_ struct ev_periodic *w) 2845ev_periodic_start (EV_P_ ev_periodic *w)
1359{ 2846{
1360 if (ev_is_active (w)) 2847 if (expect_false (ev_is_active (w)))
1361 return; 2848 return;
1362 2849
1363 if (w->reschedule_cb) 2850 if (w->reschedule_cb)
1364 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2851 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1365 else if (w->interval) 2852 else if (w->interval)
1366 { 2853 {
1367 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2854 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1368 /* this formula differs from the one in periodic_reify because we do not always round up */ 2855 periodic_recalc (EV_A_ w);
1369 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1370 } 2856 }
2857 else
2858 ev_at (w) = w->offset;
1371 2859
2860 EV_FREQUENT_CHECK;
2861
2862 ++periodiccnt;
1372 ev_start (EV_A_ (W)w, ++periodiccnt); 2863 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1373 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 2864 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1374 periodics [periodiccnt - 1] = w; 2865 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1375 upheap ((WT *)periodics, periodiccnt - 1); 2866 ANHE_at_cache (periodics [ev_active (w)]);
2867 upheap (periodics, ev_active (w));
1376 2868
2869 EV_FREQUENT_CHECK;
2870
1377 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2871 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1378} 2872}
1379 2873
1380void 2874void noinline
1381ev_periodic_stop (EV_P_ struct ev_periodic *w) 2875ev_periodic_stop (EV_P_ ev_periodic *w)
1382{ 2876{
1383 ev_clear_pending (EV_A_ (W)w); 2877 clear_pending (EV_A_ (W)w);
1384 if (!ev_is_active (w)) 2878 if (expect_false (!ev_is_active (w)))
1385 return; 2879 return;
1386 2880
2881 EV_FREQUENT_CHECK;
2882
2883 {
2884 int active = ev_active (w);
2885
1387 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2886 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1388 2887
1389 if (((W)w)->active < periodiccnt--) 2888 --periodiccnt;
2889
2890 if (expect_true (active < periodiccnt + HEAP0))
1390 { 2891 {
1391 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2892 periodics [active] = periodics [periodiccnt + HEAP0];
1392 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2893 adjustheap (periodics, periodiccnt, active);
1393 } 2894 }
2895 }
1394 2896
1395 ev_stop (EV_A_ (W)w); 2897 ev_stop (EV_A_ (W)w);
1396}
1397 2898
1398void 2899 EV_FREQUENT_CHECK;
2900}
2901
2902void noinline
1399ev_periodic_again (EV_P_ struct ev_periodic *w) 2903ev_periodic_again (EV_P_ ev_periodic *w)
1400{ 2904{
1401 /* TODO: use adjustheap and recalculation */ 2905 /* TODO: use adjustheap and recalculation */
1402 ev_periodic_stop (EV_A_ w); 2906 ev_periodic_stop (EV_A_ w);
1403 ev_periodic_start (EV_A_ w); 2907 ev_periodic_start (EV_A_ w);
1404} 2908}
1405 2909#endif
1406void
1407ev_idle_start (EV_P_ struct ev_idle *w)
1408{
1409 if (ev_is_active (w))
1410 return;
1411
1412 ev_start (EV_A_ (W)w, ++idlecnt);
1413 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1414 idles [idlecnt - 1] = w;
1415}
1416
1417void
1418ev_idle_stop (EV_P_ struct ev_idle *w)
1419{
1420 ev_clear_pending (EV_A_ (W)w);
1421 if (ev_is_active (w))
1422 return;
1423
1424 idles [((W)w)->active - 1] = idles [--idlecnt];
1425 ev_stop (EV_A_ (W)w);
1426}
1427
1428void
1429ev_prepare_start (EV_P_ struct ev_prepare *w)
1430{
1431 if (ev_is_active (w))
1432 return;
1433
1434 ev_start (EV_A_ (W)w, ++preparecnt);
1435 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1436 prepares [preparecnt - 1] = w;
1437}
1438
1439void
1440ev_prepare_stop (EV_P_ struct ev_prepare *w)
1441{
1442 ev_clear_pending (EV_A_ (W)w);
1443 if (ev_is_active (w))
1444 return;
1445
1446 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1447 ev_stop (EV_A_ (W)w);
1448}
1449
1450void
1451ev_check_start (EV_P_ struct ev_check *w)
1452{
1453 if (ev_is_active (w))
1454 return;
1455
1456 ev_start (EV_A_ (W)w, ++checkcnt);
1457 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1458 checks [checkcnt - 1] = w;
1459}
1460
1461void
1462ev_check_stop (EV_P_ struct ev_check *w)
1463{
1464 ev_clear_pending (EV_A_ (W)w);
1465 if (ev_is_active (w))
1466 return;
1467
1468 checks [((W)w)->active - 1] = checks [--checkcnt];
1469 ev_stop (EV_A_ (W)w);
1470}
1471 2910
1472#ifndef SA_RESTART 2911#ifndef SA_RESTART
1473# define SA_RESTART 0 2912# define SA_RESTART 0
1474#endif 2913#endif
1475 2914
1476void 2915#if EV_SIGNAL_ENABLE
2916
2917void noinline
1477ev_signal_start (EV_P_ struct ev_signal *w) 2918ev_signal_start (EV_P_ ev_signal *w)
1478{ 2919{
2920 if (expect_false (ev_is_active (w)))
2921 return;
2922
2923 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2924
1479#if EV_MULTIPLICITY 2925#if EV_MULTIPLICITY
1480 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 2926 assert (("libev: a signal must not be attached to two different loops",
2927 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2928
2929 signals [w->signum - 1].loop = EV_A;
2930#endif
2931
2932 EV_FREQUENT_CHECK;
2933
2934#if EV_USE_SIGNALFD
2935 if (sigfd == -2)
2936 {
2937 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2938 if (sigfd < 0 && errno == EINVAL)
2939 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2940
2941 if (sigfd >= 0)
2942 {
2943 fd_intern (sigfd); /* doing it twice will not hurt */
2944
2945 sigemptyset (&sigfd_set);
2946
2947 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2948 ev_set_priority (&sigfd_w, EV_MAXPRI);
2949 ev_io_start (EV_A_ &sigfd_w);
2950 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2951 }
2952 }
2953
2954 if (sigfd >= 0)
2955 {
2956 /* TODO: check .head */
2957 sigaddset (&sigfd_set, w->signum);
2958 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2959
2960 signalfd (sigfd, &sigfd_set, 0);
2961 }
2962#endif
2963
2964 ev_start (EV_A_ (W)w, 1);
2965 wlist_add (&signals [w->signum - 1].head, (WL)w);
2966
2967 if (!((WL)w)->next)
2968# if EV_USE_SIGNALFD
2969 if (sigfd < 0) /*TODO*/
1481#endif 2970# endif
1482 if (ev_is_active (w)) 2971 {
2972# ifdef _WIN32
2973 evpipe_init (EV_A);
2974
2975 signal (w->signum, ev_sighandler);
2976# else
2977 struct sigaction sa;
2978
2979 evpipe_init (EV_A);
2980
2981 sa.sa_handler = ev_sighandler;
2982 sigfillset (&sa.sa_mask);
2983 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2984 sigaction (w->signum, &sa, 0);
2985
2986 if (origflags & EVFLAG_NOSIGMASK)
2987 {
2988 sigemptyset (&sa.sa_mask);
2989 sigaddset (&sa.sa_mask, w->signum);
2990 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2991 }
2992#endif
2993 }
2994
2995 EV_FREQUENT_CHECK;
2996}
2997
2998void noinline
2999ev_signal_stop (EV_P_ ev_signal *w)
3000{
3001 clear_pending (EV_A_ (W)w);
3002 if (expect_false (!ev_is_active (w)))
1483 return; 3003 return;
1484 3004
1485 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3005 EV_FREQUENT_CHECK;
3006
3007 wlist_del (&signals [w->signum - 1].head, (WL)w);
3008 ev_stop (EV_A_ (W)w);
3009
3010 if (!signals [w->signum - 1].head)
3011 {
3012#if EV_MULTIPLICITY
3013 signals [w->signum - 1].loop = 0; /* unattach from signal */
3014#endif
3015#if EV_USE_SIGNALFD
3016 if (sigfd >= 0)
3017 {
3018 sigset_t ss;
3019
3020 sigemptyset (&ss);
3021 sigaddset (&ss, w->signum);
3022 sigdelset (&sigfd_set, w->signum);
3023
3024 signalfd (sigfd, &sigfd_set, 0);
3025 sigprocmask (SIG_UNBLOCK, &ss, 0);
3026 }
3027 else
3028#endif
3029 signal (w->signum, SIG_DFL);
3030 }
3031
3032 EV_FREQUENT_CHECK;
3033}
3034
3035#endif
3036
3037#if EV_CHILD_ENABLE
3038
3039void
3040ev_child_start (EV_P_ ev_child *w)
3041{
3042#if EV_MULTIPLICITY
3043 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3044#endif
3045 if (expect_false (ev_is_active (w)))
3046 return;
3047
3048 EV_FREQUENT_CHECK;
1486 3049
1487 ev_start (EV_A_ (W)w, 1); 3050 ev_start (EV_A_ (W)w, 1);
1488 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3051 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1489 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1490 3052
1491 if (!((WL)w)->next) 3053 EV_FREQUENT_CHECK;
3054}
3055
3056void
3057ev_child_stop (EV_P_ ev_child *w)
3058{
3059 clear_pending (EV_A_ (W)w);
3060 if (expect_false (!ev_is_active (w)))
3061 return;
3062
3063 EV_FREQUENT_CHECK;
3064
3065 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
3066 ev_stop (EV_A_ (W)w);
3067
3068 EV_FREQUENT_CHECK;
3069}
3070
3071#endif
3072
3073#if EV_STAT_ENABLE
3074
3075# ifdef _WIN32
3076# undef lstat
3077# define lstat(a,b) _stati64 (a,b)
3078# endif
3079
3080#define DEF_STAT_INTERVAL 5.0074891
3081#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3082#define MIN_STAT_INTERVAL 0.1074891
3083
3084static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3085
3086#if EV_USE_INOTIFY
3087
3088/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3089# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3090
3091static void noinline
3092infy_add (EV_P_ ev_stat *w)
3093{
3094 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);
3095
3096 if (w->wd >= 0)
3097 {
3098 struct statfs sfs;
3099
3100 /* now local changes will be tracked by inotify, but remote changes won't */
3101 /* unless the filesystem is known to be local, we therefore still poll */
3102 /* also do poll on <2.6.25, but with normal frequency */
3103
3104 if (!fs_2625)
3105 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3106 else if (!statfs (w->path, &sfs)
3107 && (sfs.f_type == 0x1373 /* devfs */
3108 || sfs.f_type == 0xEF53 /* ext2/3 */
3109 || sfs.f_type == 0x3153464a /* jfs */
3110 || sfs.f_type == 0x52654973 /* reiser3 */
3111 || sfs.f_type == 0x01021994 /* tempfs */
3112 || sfs.f_type == 0x58465342 /* xfs */))
3113 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3114 else
3115 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1492 { 3116 }
1493#if WIN32 3117 else
1494 signal (w->signum, sighandler); 3118 {
3119 /* can't use inotify, continue to stat */
3120 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3121
3122 /* if path is not there, monitor some parent directory for speedup hints */
3123 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3124 /* but an efficiency issue only */
3125 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
3126 {
3127 char path [4096];
3128 strcpy (path, w->path);
3129
3130 do
3131 {
3132 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
3133 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
3134
3135 char *pend = strrchr (path, '/');
3136
3137 if (!pend || pend == path)
3138 break;
3139
3140 *pend = 0;
3141 w->wd = inotify_add_watch (fs_fd, path, mask);
3142 }
3143 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3144 }
3145 }
3146
3147 if (w->wd >= 0)
3148 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3149
3150 /* now re-arm timer, if required */
3151 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3152 ev_timer_again (EV_A_ &w->timer);
3153 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3154}
3155
3156static void noinline
3157infy_del (EV_P_ ev_stat *w)
3158{
3159 int slot;
3160 int wd = w->wd;
3161
3162 if (wd < 0)
3163 return;
3164
3165 w->wd = -2;
3166 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
3167 wlist_del (&fs_hash [slot].head, (WL)w);
3168
3169 /* remove this watcher, if others are watching it, they will rearm */
3170 inotify_rm_watch (fs_fd, wd);
3171}
3172
3173static void noinline
3174infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3175{
3176 if (slot < 0)
3177 /* overflow, need to check for all hash slots */
3178 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3179 infy_wd (EV_A_ slot, wd, ev);
3180 else
3181 {
3182 WL w_;
3183
3184 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
3185 {
3186 ev_stat *w = (ev_stat *)w_;
3187 w_ = w_->next; /* lets us remove this watcher and all before it */
3188
3189 if (w->wd == wd || wd == -1)
3190 {
3191 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
3192 {
3193 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3194 w->wd = -1;
3195 infy_add (EV_A_ w); /* re-add, no matter what */
3196 }
3197
3198 stat_timer_cb (EV_A_ &w->timer, 0);
3199 }
3200 }
3201 }
3202}
3203
3204static void
3205infy_cb (EV_P_ ev_io *w, int revents)
3206{
3207 char buf [EV_INOTIFY_BUFSIZE];
3208 int ofs;
3209 int len = read (fs_fd, buf, sizeof (buf));
3210
3211 for (ofs = 0; ofs < len; )
3212 {
3213 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
3214 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3215 ofs += sizeof (struct inotify_event) + ev->len;
3216 }
3217}
3218
3219inline_size void
3220ev_check_2625 (EV_P)
3221{
3222 /* kernels < 2.6.25 are borked
3223 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3224 */
3225 if (ev_linux_version () < 0x020619)
3226 return;
3227
3228 fs_2625 = 1;
3229}
3230
3231inline_size int
3232infy_newfd (void)
3233{
3234#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3235 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3236 if (fd >= 0)
3237 return fd;
3238#endif
3239 return inotify_init ();
3240}
3241
3242inline_size void
3243infy_init (EV_P)
3244{
3245 if (fs_fd != -2)
3246 return;
3247
3248 fs_fd = -1;
3249
3250 ev_check_2625 (EV_A);
3251
3252 fs_fd = infy_newfd ();
3253
3254 if (fs_fd >= 0)
3255 {
3256 fd_intern (fs_fd);
3257 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3258 ev_set_priority (&fs_w, EV_MAXPRI);
3259 ev_io_start (EV_A_ &fs_w);
3260 ev_unref (EV_A);
3261 }
3262}
3263
3264inline_size void
3265infy_fork (EV_P)
3266{
3267 int slot;
3268
3269 if (fs_fd < 0)
3270 return;
3271
3272 ev_ref (EV_A);
3273 ev_io_stop (EV_A_ &fs_w);
3274 close (fs_fd);
3275 fs_fd = infy_newfd ();
3276
3277 if (fs_fd >= 0)
3278 {
3279 fd_intern (fs_fd);
3280 ev_io_set (&fs_w, fs_fd, EV_READ);
3281 ev_io_start (EV_A_ &fs_w);
3282 ev_unref (EV_A);
3283 }
3284
3285 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3286 {
3287 WL w_ = fs_hash [slot].head;
3288 fs_hash [slot].head = 0;
3289
3290 while (w_)
3291 {
3292 ev_stat *w = (ev_stat *)w_;
3293 w_ = w_->next; /* lets us add this watcher */
3294
3295 w->wd = -1;
3296
3297 if (fs_fd >= 0)
3298 infy_add (EV_A_ w); /* re-add, no matter what */
3299 else
3300 {
3301 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3302 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3303 ev_timer_again (EV_A_ &w->timer);
3304 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3305 }
3306 }
3307 }
3308}
3309
3310#endif
3311
3312#ifdef _WIN32
3313# define EV_LSTAT(p,b) _stati64 (p, b)
1495#else 3314#else
1496 struct sigaction sa; 3315# define EV_LSTAT(p,b) lstat (p, b)
1497 sa.sa_handler = sighandler;
1498 sigfillset (&sa.sa_mask);
1499 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1500 sigaction (w->signum, &sa, 0);
1501#endif 3316#endif
1502 }
1503}
1504 3317
1505void 3318void
1506ev_signal_stop (EV_P_ struct ev_signal *w) 3319ev_stat_stat (EV_P_ ev_stat *w)
1507{ 3320{
1508 ev_clear_pending (EV_A_ (W)w); 3321 if (lstat (w->path, &w->attr) < 0)
1509 if (!ev_is_active (w)) 3322 w->attr.st_nlink = 0;
3323 else if (!w->attr.st_nlink)
3324 w->attr.st_nlink = 1;
3325}
3326
3327static void noinline
3328stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3329{
3330 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3331
3332 ev_statdata prev = w->attr;
3333 ev_stat_stat (EV_A_ w);
3334
3335 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3336 if (
3337 prev.st_dev != w->attr.st_dev
3338 || prev.st_ino != w->attr.st_ino
3339 || prev.st_mode != w->attr.st_mode
3340 || prev.st_nlink != w->attr.st_nlink
3341 || prev.st_uid != w->attr.st_uid
3342 || prev.st_gid != w->attr.st_gid
3343 || prev.st_rdev != w->attr.st_rdev
3344 || prev.st_size != w->attr.st_size
3345 || prev.st_atime != w->attr.st_atime
3346 || prev.st_mtime != w->attr.st_mtime
3347 || prev.st_ctime != w->attr.st_ctime
3348 ) {
3349 /* we only update w->prev on actual differences */
3350 /* in case we test more often than invoke the callback, */
3351 /* to ensure that prev is always different to attr */
3352 w->prev = prev;
3353
3354 #if EV_USE_INOTIFY
3355 if (fs_fd >= 0)
3356 {
3357 infy_del (EV_A_ w);
3358 infy_add (EV_A_ w);
3359 ev_stat_stat (EV_A_ w); /* avoid race... */
3360 }
3361 #endif
3362
3363 ev_feed_event (EV_A_ w, EV_STAT);
3364 }
3365}
3366
3367void
3368ev_stat_start (EV_P_ ev_stat *w)
3369{
3370 if (expect_false (ev_is_active (w)))
1510 return; 3371 return;
1511 3372
1512 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 3373 ev_stat_stat (EV_A_ w);
3374
3375 if (w->interval < MIN_STAT_INTERVAL && w->interval)
3376 w->interval = MIN_STAT_INTERVAL;
3377
3378 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
3379 ev_set_priority (&w->timer, ev_priority (w));
3380
3381#if EV_USE_INOTIFY
3382 infy_init (EV_A);
3383
3384 if (fs_fd >= 0)
3385 infy_add (EV_A_ w);
3386 else
3387#endif
3388 {
3389 ev_timer_again (EV_A_ &w->timer);
3390 ev_unref (EV_A);
3391 }
3392
3393 ev_start (EV_A_ (W)w, 1);
3394
3395 EV_FREQUENT_CHECK;
3396}
3397
3398void
3399ev_stat_stop (EV_P_ ev_stat *w)
3400{
3401 clear_pending (EV_A_ (W)w);
3402 if (expect_false (!ev_is_active (w)))
3403 return;
3404
3405 EV_FREQUENT_CHECK;
3406
3407#if EV_USE_INOTIFY
3408 infy_del (EV_A_ w);
3409#endif
3410
3411 if (ev_is_active (&w->timer))
3412 {
3413 ev_ref (EV_A);
3414 ev_timer_stop (EV_A_ &w->timer);
3415 }
3416
1513 ev_stop (EV_A_ (W)w); 3417 ev_stop (EV_A_ (W)w);
1514 3418
1515 if (!signals [w->signum - 1].head) 3419 EV_FREQUENT_CHECK;
1516 signal (w->signum, SIG_DFL);
1517} 3420}
3421#endif
1518 3422
3423#if EV_IDLE_ENABLE
1519void 3424void
1520ev_child_start (EV_P_ struct ev_child *w) 3425ev_idle_start (EV_P_ ev_idle *w)
1521{ 3426{
1522#if EV_MULTIPLICITY
1523 assert (("child watchers are only supported in the default loop", loop == default_loop));
1524#endif
1525 if (ev_is_active (w)) 3427 if (expect_false (ev_is_active (w)))
1526 return; 3428 return;
1527 3429
3430 pri_adjust (EV_A_ (W)w);
3431
3432 EV_FREQUENT_CHECK;
3433
3434 {
3435 int active = ++idlecnt [ABSPRI (w)];
3436
3437 ++idleall;
3438 ev_start (EV_A_ (W)w, active);
3439
3440 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
3441 idles [ABSPRI (w)][active - 1] = w;
3442 }
3443
3444 EV_FREQUENT_CHECK;
3445}
3446
3447void
3448ev_idle_stop (EV_P_ ev_idle *w)
3449{
3450 clear_pending (EV_A_ (W)w);
3451 if (expect_false (!ev_is_active (w)))
3452 return;
3453
3454 EV_FREQUENT_CHECK;
3455
3456 {
3457 int active = ev_active (w);
3458
3459 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
3460 ev_active (idles [ABSPRI (w)][active - 1]) = active;
3461
3462 ev_stop (EV_A_ (W)w);
3463 --idleall;
3464 }
3465
3466 EV_FREQUENT_CHECK;
3467}
3468#endif
3469
3470#if EV_PREPARE_ENABLE
3471void
3472ev_prepare_start (EV_P_ ev_prepare *w)
3473{
3474 if (expect_false (ev_is_active (w)))
3475 return;
3476
3477 EV_FREQUENT_CHECK;
3478
3479 ev_start (EV_A_ (W)w, ++preparecnt);
3480 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
3481 prepares [preparecnt - 1] = w;
3482
3483 EV_FREQUENT_CHECK;
3484}
3485
3486void
3487ev_prepare_stop (EV_P_ ev_prepare *w)
3488{
3489 clear_pending (EV_A_ (W)w);
3490 if (expect_false (!ev_is_active (w)))
3491 return;
3492
3493 EV_FREQUENT_CHECK;
3494
3495 {
3496 int active = ev_active (w);
3497
3498 prepares [active - 1] = prepares [--preparecnt];
3499 ev_active (prepares [active - 1]) = active;
3500 }
3501
3502 ev_stop (EV_A_ (W)w);
3503
3504 EV_FREQUENT_CHECK;
3505}
3506#endif
3507
3508#if EV_CHECK_ENABLE
3509void
3510ev_check_start (EV_P_ ev_check *w)
3511{
3512 if (expect_false (ev_is_active (w)))
3513 return;
3514
3515 EV_FREQUENT_CHECK;
3516
3517 ev_start (EV_A_ (W)w, ++checkcnt);
3518 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
3519 checks [checkcnt - 1] = w;
3520
3521 EV_FREQUENT_CHECK;
3522}
3523
3524void
3525ev_check_stop (EV_P_ ev_check *w)
3526{
3527 clear_pending (EV_A_ (W)w);
3528 if (expect_false (!ev_is_active (w)))
3529 return;
3530
3531 EV_FREQUENT_CHECK;
3532
3533 {
3534 int active = ev_active (w);
3535
3536 checks [active - 1] = checks [--checkcnt];
3537 ev_active (checks [active - 1]) = active;
3538 }
3539
3540 ev_stop (EV_A_ (W)w);
3541
3542 EV_FREQUENT_CHECK;
3543}
3544#endif
3545
3546#if EV_EMBED_ENABLE
3547void noinline
3548ev_embed_sweep (EV_P_ ev_embed *w)
3549{
3550 ev_run (w->other, EVRUN_NOWAIT);
3551}
3552
3553static void
3554embed_io_cb (EV_P_ ev_io *io, int revents)
3555{
3556 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3557
3558 if (ev_cb (w))
3559 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3560 else
3561 ev_run (w->other, EVRUN_NOWAIT);
3562}
3563
3564static void
3565embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3566{
3567 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3568
3569 {
3570 EV_P = w->other;
3571
3572 while (fdchangecnt)
3573 {
3574 fd_reify (EV_A);
3575 ev_run (EV_A_ EVRUN_NOWAIT);
3576 }
3577 }
3578}
3579
3580static void
3581embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3582{
3583 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3584
3585 ev_embed_stop (EV_A_ w);
3586
3587 {
3588 EV_P = w->other;
3589
3590 ev_loop_fork (EV_A);
3591 ev_run (EV_A_ EVRUN_NOWAIT);
3592 }
3593
3594 ev_embed_start (EV_A_ w);
3595}
3596
3597#if 0
3598static void
3599embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3600{
3601 ev_idle_stop (EV_A_ idle);
3602}
3603#endif
3604
3605void
3606ev_embed_start (EV_P_ ev_embed *w)
3607{
3608 if (expect_false (ev_is_active (w)))
3609 return;
3610
3611 {
3612 EV_P = w->other;
3613 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3614 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3615 }
3616
3617 EV_FREQUENT_CHECK;
3618
3619 ev_set_priority (&w->io, ev_priority (w));
3620 ev_io_start (EV_A_ &w->io);
3621
3622 ev_prepare_init (&w->prepare, embed_prepare_cb);
3623 ev_set_priority (&w->prepare, EV_MINPRI);
3624 ev_prepare_start (EV_A_ &w->prepare);
3625
3626 ev_fork_init (&w->fork, embed_fork_cb);
3627 ev_fork_start (EV_A_ &w->fork);
3628
3629 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3630
1528 ev_start (EV_A_ (W)w, 1); 3631 ev_start (EV_A_ (W)w, 1);
1529 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1530}
1531 3632
3633 EV_FREQUENT_CHECK;
3634}
3635
1532void 3636void
1533ev_child_stop (EV_P_ struct ev_child *w) 3637ev_embed_stop (EV_P_ ev_embed *w)
1534{ 3638{
1535 ev_clear_pending (EV_A_ (W)w); 3639 clear_pending (EV_A_ (W)w);
1536 if (ev_is_active (w)) 3640 if (expect_false (!ev_is_active (w)))
1537 return; 3641 return;
1538 3642
1539 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 3643 EV_FREQUENT_CHECK;
3644
3645 ev_io_stop (EV_A_ &w->io);
3646 ev_prepare_stop (EV_A_ &w->prepare);
3647 ev_fork_stop (EV_A_ &w->fork);
3648
1540 ev_stop (EV_A_ (W)w); 3649 ev_stop (EV_A_ (W)w);
3650
3651 EV_FREQUENT_CHECK;
1541} 3652}
3653#endif
3654
3655#if EV_FORK_ENABLE
3656void
3657ev_fork_start (EV_P_ ev_fork *w)
3658{
3659 if (expect_false (ev_is_active (w)))
3660 return;
3661
3662 EV_FREQUENT_CHECK;
3663
3664 ev_start (EV_A_ (W)w, ++forkcnt);
3665 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
3666 forks [forkcnt - 1] = w;
3667
3668 EV_FREQUENT_CHECK;
3669}
3670
3671void
3672ev_fork_stop (EV_P_ ev_fork *w)
3673{
3674 clear_pending (EV_A_ (W)w);
3675 if (expect_false (!ev_is_active (w)))
3676 return;
3677
3678 EV_FREQUENT_CHECK;
3679
3680 {
3681 int active = ev_active (w);
3682
3683 forks [active - 1] = forks [--forkcnt];
3684 ev_active (forks [active - 1]) = active;
3685 }
3686
3687 ev_stop (EV_A_ (W)w);
3688
3689 EV_FREQUENT_CHECK;
3690}
3691#endif
3692
3693#if EV_CLEANUP_ENABLE
3694void
3695ev_cleanup_start (EV_P_ ev_cleanup *w)
3696{
3697 if (expect_false (ev_is_active (w)))
3698 return;
3699
3700 EV_FREQUENT_CHECK;
3701
3702 ev_start (EV_A_ (W)w, ++cleanupcnt);
3703 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3704 cleanups [cleanupcnt - 1] = w;
3705
3706 /* cleanup watchers should never keep a refcount on the loop */
3707 ev_unref (EV_A);
3708 EV_FREQUENT_CHECK;
3709}
3710
3711void
3712ev_cleanup_stop (EV_P_ ev_cleanup *w)
3713{
3714 clear_pending (EV_A_ (W)w);
3715 if (expect_false (!ev_is_active (w)))
3716 return;
3717
3718 EV_FREQUENT_CHECK;
3719 ev_ref (EV_A);
3720
3721 {
3722 int active = ev_active (w);
3723
3724 cleanups [active - 1] = cleanups [--cleanupcnt];
3725 ev_active (cleanups [active - 1]) = active;
3726 }
3727
3728 ev_stop (EV_A_ (W)w);
3729
3730 EV_FREQUENT_CHECK;
3731}
3732#endif
3733
3734#if EV_ASYNC_ENABLE
3735void
3736ev_async_start (EV_P_ ev_async *w)
3737{
3738 if (expect_false (ev_is_active (w)))
3739 return;
3740
3741 w->sent = 0;
3742
3743 evpipe_init (EV_A);
3744
3745 EV_FREQUENT_CHECK;
3746
3747 ev_start (EV_A_ (W)w, ++asynccnt);
3748 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3749 asyncs [asynccnt - 1] = w;
3750
3751 EV_FREQUENT_CHECK;
3752}
3753
3754void
3755ev_async_stop (EV_P_ ev_async *w)
3756{
3757 clear_pending (EV_A_ (W)w);
3758 if (expect_false (!ev_is_active (w)))
3759 return;
3760
3761 EV_FREQUENT_CHECK;
3762
3763 {
3764 int active = ev_active (w);
3765
3766 asyncs [active - 1] = asyncs [--asynccnt];
3767 ev_active (asyncs [active - 1]) = active;
3768 }
3769
3770 ev_stop (EV_A_ (W)w);
3771
3772 EV_FREQUENT_CHECK;
3773}
3774
3775void
3776ev_async_send (EV_P_ ev_async *w)
3777{
3778 w->sent = 1;
3779 evpipe_write (EV_A_ &async_pending);
3780}
3781#endif
1542 3782
1543/*****************************************************************************/ 3783/*****************************************************************************/
1544 3784
1545struct ev_once 3785struct ev_once
1546{ 3786{
1547 struct ev_io io; 3787 ev_io io;
1548 struct ev_timer to; 3788 ev_timer to;
1549 void (*cb)(int revents, void *arg); 3789 void (*cb)(int revents, void *arg);
1550 void *arg; 3790 void *arg;
1551}; 3791};
1552 3792
1553static void 3793static void
1554once_cb (EV_P_ struct ev_once *once, int revents) 3794once_cb (EV_P_ struct ev_once *once, int revents)
1555{ 3795{
1556 void (*cb)(int revents, void *arg) = once->cb; 3796 void (*cb)(int revents, void *arg) = once->cb;
1557 void *arg = once->arg; 3797 void *arg = once->arg;
1558 3798
1559 ev_io_stop (EV_A_ &once->io); 3799 ev_io_stop (EV_A_ &once->io);
1560 ev_timer_stop (EV_A_ &once->to); 3800 ev_timer_stop (EV_A_ &once->to);
1561 ev_free (once); 3801 ev_free (once);
1562 3802
1563 cb (revents, arg); 3803 cb (revents, arg);
1564} 3804}
1565 3805
1566static void 3806static void
1567once_cb_io (EV_P_ struct ev_io *w, int revents) 3807once_cb_io (EV_P_ ev_io *w, int revents)
1568{ 3808{
1569 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3809 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3810
3811 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
1570} 3812}
1571 3813
1572static void 3814static void
1573once_cb_to (EV_P_ struct ev_timer *w, int revents) 3815once_cb_to (EV_P_ ev_timer *w, int revents)
1574{ 3816{
1575 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3817 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3818
3819 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
1576} 3820}
1577 3821
1578void 3822void
1579ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3823ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1580{ 3824{
1581 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3825 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1582 3826
1583 if (!once) 3827 if (expect_false (!once))
3828 {
1584 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3829 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
1585 else 3830 return;
1586 { 3831 }
3832
1587 once->cb = cb; 3833 once->cb = cb;
1588 once->arg = arg; 3834 once->arg = arg;
1589 3835
1590 ev_init (&once->io, once_cb_io); 3836 ev_init (&once->io, once_cb_io);
1591 if (fd >= 0) 3837 if (fd >= 0)
3838 {
3839 ev_io_set (&once->io, fd, events);
3840 ev_io_start (EV_A_ &once->io);
3841 }
3842
3843 ev_init (&once->to, once_cb_to);
3844 if (timeout >= 0.)
3845 {
3846 ev_timer_set (&once->to, timeout, 0.);
3847 ev_timer_start (EV_A_ &once->to);
3848 }
3849}
3850
3851/*****************************************************************************/
3852
3853#if EV_WALK_ENABLE
3854void
3855ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3856{
3857 int i, j;
3858 ev_watcher_list *wl, *wn;
3859
3860 if (types & (EV_IO | EV_EMBED))
3861 for (i = 0; i < anfdmax; ++i)
3862 for (wl = anfds [i].head; wl; )
1592 { 3863 {
1593 ev_io_set (&once->io, fd, events); 3864 wn = wl->next;
1594 ev_io_start (EV_A_ &once->io); 3865
3866#if EV_EMBED_ENABLE
3867 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3868 {
3869 if (types & EV_EMBED)
3870 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3871 }
3872 else
3873#endif
3874#if EV_USE_INOTIFY
3875 if (ev_cb ((ev_io *)wl) == infy_cb)
3876 ;
3877 else
3878#endif
3879 if ((ev_io *)wl != &pipe_w)
3880 if (types & EV_IO)
3881 cb (EV_A_ EV_IO, wl);
3882
3883 wl = wn;
1595 } 3884 }
1596 3885
1597 ev_init (&once->to, once_cb_to); 3886 if (types & (EV_TIMER | EV_STAT))
1598 if (timeout >= 0.) 3887 for (i = timercnt + HEAP0; i-- > HEAP0; )
3888#if EV_STAT_ENABLE
3889 /*TODO: timer is not always active*/
3890 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
1599 { 3891 {
1600 ev_timer_set (&once->to, timeout, 0.); 3892 if (types & EV_STAT)
1601 ev_timer_start (EV_A_ &once->to); 3893 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
1602 } 3894 }
1603 } 3895 else
1604} 3896#endif
3897 if (types & EV_TIMER)
3898 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
1605 3899
1606#ifdef __cplusplus 3900#if EV_PERIODIC_ENABLE
1607} 3901 if (types & EV_PERIODIC)
3902 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3903 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3904#endif
3905
3906#if EV_IDLE_ENABLE
3907 if (types & EV_IDLE)
3908 for (j = NUMPRI; i--; )
3909 for (i = idlecnt [j]; i--; )
3910 cb (EV_A_ EV_IDLE, idles [j][i]);
3911#endif
3912
3913#if EV_FORK_ENABLE
3914 if (types & EV_FORK)
3915 for (i = forkcnt; i--; )
3916 if (ev_cb (forks [i]) != embed_fork_cb)
3917 cb (EV_A_ EV_FORK, forks [i]);
3918#endif
3919
3920#if EV_ASYNC_ENABLE
3921 if (types & EV_ASYNC)
3922 for (i = asynccnt; i--; )
3923 cb (EV_A_ EV_ASYNC, asyncs [i]);
3924#endif
3925
3926#if EV_PREPARE_ENABLE
3927 if (types & EV_PREPARE)
3928 for (i = preparecnt; i--; )
3929# if EV_EMBED_ENABLE
3930 if (ev_cb (prepares [i]) != embed_prepare_cb)
1608#endif 3931# endif
3932 cb (EV_A_ EV_PREPARE, prepares [i]);
3933#endif
1609 3934
3935#if EV_CHECK_ENABLE
3936 if (types & EV_CHECK)
3937 for (i = checkcnt; i--; )
3938 cb (EV_A_ EV_CHECK, checks [i]);
3939#endif
3940
3941#if EV_SIGNAL_ENABLE
3942 if (types & EV_SIGNAL)
3943 for (i = 0; i < EV_NSIG - 1; ++i)
3944 for (wl = signals [i].head; wl; )
3945 {
3946 wn = wl->next;
3947 cb (EV_A_ EV_SIGNAL, wl);
3948 wl = wn;
3949 }
3950#endif
3951
3952#if EV_CHILD_ENABLE
3953 if (types & EV_CHILD)
3954 for (i = (EV_PID_HASHSIZE); i--; )
3955 for (wl = childs [i]; wl; )
3956 {
3957 wn = wl->next;
3958 cb (EV_A_ EV_CHILD, wl);
3959 wl = wn;
3960 }
3961#endif
3962/* EV_STAT 0x00001000 /* stat data changed */
3963/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3964}
3965#endif
3966
3967#if EV_MULTIPLICITY
3968 #include "ev_wrap.h"
3969#endif
3970
3971EV_CPP(})
3972

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