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Comparing libev/ev.c (file contents):
Revision 1.141 by root, Mon Nov 26 20:33:58 2007 UTC vs.
Revision 1.358 by root, Sun Oct 24 14:44:40 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 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: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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
37# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 43# include EV_CONFIG_H
39# else 44# else
40# include "config.h" 45# include "config.h"
41# endif 46# endif
42 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
43# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
46# endif 65# endif
47# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
48# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
49# endif 68# endif
50# else 69# else
51# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
53# endif 72# endif
54# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
56# endif 75# endif
57# endif 76# endif
58 77
78# if HAVE_NANOSLEEP
59# ifndef EV_USE_SELECT 79# ifndef EV_USE_NANOSLEEP
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif 81# endif
82# else
83# undef EV_USE_NANOSLEEP
84# define EV_USE_NANOSLEEP 0
65# endif 85# endif
66 86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
67# ifndef EV_USE_POLL 88# ifndef EV_USE_SELECT
68# if HAVE_POLL && HAVE_POLL_H 89# define EV_USE_SELECT EV_FEATURE_BACKENDS
69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
94# endif
95
96# if HAVE_POLL && HAVE_POLL_H
97# ifndef EV_USE_POLL
98# define EV_USE_POLL EV_FEATURE_BACKENDS
99# endif
100# else
101# undef EV_USE_POLL
102# define EV_USE_POLL 0
73# endif 103# endif
74 104
75# ifndef EV_USE_EPOLL
76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
77# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
78# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
79# define EV_USE_EPOLL 0
80# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
81# endif 112# endif
82 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
83# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
89# endif 121# endif
90 122
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
94# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
95# define EV_USE_PORT 0
96# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
97# endif 130# endif
98 131
132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
133# ifndef EV_USE_INOTIFY
134# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
139# endif
140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
142# ifndef EV_USE_SIGNALFD
143# define EV_USE_SIGNALFD EV_FEATURE_OS
144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
157# endif
158
99#endif 159#endif
100 160
101#include <math.h> 161#include <math.h>
102#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
103#include <fcntl.h> 164#include <fcntl.h>
104#include <stddef.h> 165#include <stddef.h>
105 166
106#include <stdio.h> 167#include <stdio.h>
107 168
108#include <assert.h> 169#include <assert.h>
109#include <errno.h> 170#include <errno.h>
110#include <sys/types.h> 171#include <sys/types.h>
111#include <time.h> 172#include <time.h>
173#include <limits.h>
112 174
113#include <signal.h> 175#include <signal.h>
176
177#ifdef EV_H
178# include EV_H
179#else
180# include "ev.h"
181#endif
182
183EV_CPP(extern "C" {)
114 184
115#ifndef _WIN32 185#ifndef _WIN32
116# include <sys/time.h> 186# include <sys/time.h>
117# include <sys/wait.h> 187# include <sys/wait.h>
118# include <unistd.h> 188# include <unistd.h>
119#else 189#else
190# include <io.h>
120# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
121# include <windows.h> 192# include <windows.h>
122# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
123# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
124# endif 195# endif
196# undef EV_AVOID_STDIO
197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
206
207/* this block tries to deduce configuration from header-defined symbols and defaults */
208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
236
237#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else
241# define EV_USE_CLOCK_SYSCALL 0
125#endif 242# endif
126 243#endif
127/**/
128 244
129#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else
130# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
250# endif
131#endif 251#endif
132 252
133#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
255#endif
256
257#ifndef EV_USE_NANOSLEEP
258# if _POSIX_C_SOURCE >= 199309L
259# define EV_USE_NANOSLEEP EV_FEATURE_OS
260# else
261# define EV_USE_NANOSLEEP 0
262# endif
135#endif 263#endif
136 264
137#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
138# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
139#endif 267#endif
140 268
141#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
142# ifdef _WIN32 270# ifdef _WIN32
143# define EV_USE_POLL 0 271# define EV_USE_POLL 0
144# else 272# else
145# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
146# endif 274# endif
147#endif 275#endif
148 276
149#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
280# else
150# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
282# endif
151#endif 283#endif
152 284
153#ifndef EV_USE_KQUEUE 285#ifndef EV_USE_KQUEUE
154# define EV_USE_KQUEUE 0 286# define EV_USE_KQUEUE 0
155#endif 287#endif
156 288
157#ifndef EV_USE_PORT 289#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 290# define EV_USE_PORT 0
159#endif 291#endif
160 292
161/**/ 293#ifndef EV_USE_INOTIFY
294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
295# define EV_USE_INOTIFY EV_FEATURE_OS
296# else
297# define EV_USE_INOTIFY 0
298# endif
299#endif
300
301#ifndef EV_PID_HASHSIZE
302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
303#endif
304
305#ifndef EV_INOTIFY_HASHSIZE
306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
307#endif
308
309#ifndef EV_USE_EVENTFD
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
311# define EV_USE_EVENTFD EV_FEATURE_OS
312# else
313# define EV_USE_EVENTFD 0
314# endif
315#endif
316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
322# endif
323#endif
324
325#if 0 /* debugging */
326# define EV_VERIFY 3
327# define EV_USE_4HEAP 1
328# define EV_HEAP_CACHE_AT 1
329#endif
330
331#ifndef EV_VERIFY
332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
333#endif
334
335#ifndef EV_USE_4HEAP
336# define EV_USE_4HEAP EV_FEATURE_DATA
337#endif
338
339#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
355#endif
356
357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
162 364
163#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
166#endif 368#endif
… …
168#ifndef CLOCK_REALTIME 370#ifndef CLOCK_REALTIME
169# undef EV_USE_REALTIME 371# undef EV_USE_REALTIME
170# define EV_USE_REALTIME 0 372# define EV_USE_REALTIME 0
171#endif 373#endif
172 374
375#if !EV_STAT_ENABLE
376# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0
378#endif
379
380#if !EV_USE_NANOSLEEP
381# ifndef _WIN32
382# include <sys/select.h>
383# endif
384#endif
385
386#if EV_USE_INOTIFY
387# include <sys/statfs.h>
388# include <sys/inotify.h>
389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
390# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0
393# endif
394#endif
395
173#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 397# include <winsock.h>
175#endif 398#endif
176 399
400#if EV_USE_EVENTFD
401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
402# include <stdint.h>
403# ifndef EFD_NONBLOCK
404# define EFD_NONBLOCK O_NONBLOCK
405# endif
406# ifndef EFD_CLOEXEC
407# ifdef O_CLOEXEC
408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
412# endif
413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430
431struct signalfd_siginfo
432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
436#endif
437
177/**/ 438/**/
439
440#if EV_VERIFY >= 3
441# define EV_FREQUENT_CHECK ev_verify (EV_A)
442#else
443# define EV_FREQUENT_CHECK do { } while (0)
444#endif
445
446/*
447 * This is used to avoid floating point rounding problems.
448 * It is added to ev_rt_now when scheduling periodics
449 * to ensure progress, time-wise, even when rounding
450 * errors are against us.
451 * This value is good at least till the year 4000.
452 * Better solutions welcome.
453 */
454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178 455
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
183 458
184#ifdef EV_H 459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
185# include EV_H 460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
186#else
187# include "ev.h"
188#endif
189 461
190#if __GNUC__ >= 3 462#if __GNUC__ >= 4
191# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline_size static inline /* inline for codesize */
193# if EV_MINIMAL
194# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
195# define inline_speed static noinline
196# else
197# define noinline
198# define inline_speed static inline
199# endif
200#else 465#else
201# define expect(expr,value) (expr) 466# define expect(expr,value) (expr)
202# define inline_speed static
203# define inline_minimal static
204# define noinline 467# define noinline
468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
469# define inline
470# endif
205#endif 471#endif
206 472
207#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
208#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
475#define inline_size static inline
209 476
477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
480# define inline_speed static noinline
481#endif
482
210#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484
485#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0)
487#else
211#define ABSPRI(w) ((w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
212 490
213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
214#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
215 493
216typedef ev_watcher *W; 494typedef ev_watcher *W;
217typedef ev_watcher_list *WL; 495typedef ev_watcher_list *WL;
218typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
219 497
498#define ev_active(w) ((W)(w))->active
499#define ev_at(w) ((WT)(w))->at
500
501#if EV_USE_REALTIME
502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
503/* giving it a reasonably high chance of working on typical architectures */
504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
505#endif
506
507#if EV_USE_MONOTONIC
220static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
509#endif
510
511#ifndef EV_FD_TO_WIN32_HANDLE
512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
513#endif
514#ifndef EV_WIN32_HANDLE_TO_FD
515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
516#endif
517#ifndef EV_WIN32_CLOSE_FD
518# define EV_WIN32_CLOSE_FD(fd) close (fd)
519#endif
221 520
222#ifdef _WIN32 521#ifdef _WIN32
223# include "ev_win32.c" 522# include "ev_win32.c"
224#endif 523#endif
225 524
226/*****************************************************************************/ 525/*****************************************************************************/
227 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 struct utsname buf;
536 unsigned int v;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
576
228static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
229 578
230void 579void
231ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
232{ 581{
233 syserr_cb = cb; 582 syserr_cb = cb;
234} 583}
235 584
236static void noinline 585static void noinline
237syserr (const char *msg) 586ev_syserr (const char *msg)
238{ 587{
239 if (!msg) 588 if (!msg)
240 msg = "(libev) system error"; 589 msg = "(libev) system error";
241 590
242 if (syserr_cb) 591 if (syserr_cb)
243 syserr_cb (msg); 592 syserr_cb (msg);
244 else 593 else
245 { 594 {
595#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg);
599 ev_printerr (": ");
600 ev_printerr (err);
601 ev_printerr ("\n");
602#else
246 perror (msg); 603 perror (msg);
604#endif
247 abort (); 605 abort ();
248 } 606 }
249} 607}
250 608
609static void *
610ev_realloc_emul (void *ptr, long size)
611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
615 /* some systems, notably openbsd and darwin, fail to properly
616 * implement realloc (x, 0) (as required by both ansi c-89 and
617 * the single unix specification, so work around them here.
618 */
619
620 if (size)
621 return realloc (ptr, size);
622
623 free (ptr);
624 return 0;
625#endif
626}
627
251static void *(*alloc)(void *ptr, long size); 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
252 629
253void 630void
254ev_set_allocator (void *(*cb)(void *ptr, long size)) 631ev_set_allocator (void *(*cb)(void *ptr, long size))
255{ 632{
256 alloc = cb; 633 alloc = cb;
257} 634}
258 635
259static void * 636inline_speed void *
260ev_realloc (void *ptr, long size) 637ev_realloc (void *ptr, long size)
261{ 638{
262 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 639 ptr = alloc (ptr, size);
263 640
264 if (!ptr && size) 641 if (!ptr && size)
265 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
266 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
267 abort (); 648 abort ();
268 } 649 }
269 650
270 return ptr; 651 return ptr;
271} 652}
… …
273#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
274#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
275 656
276/*****************************************************************************/ 657/*****************************************************************************/
277 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
278typedef struct 663typedef struct
279{ 664{
280 WL head; 665 WL head;
281 unsigned char events; 666 unsigned char events; /* the events watched for */
667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
282 unsigned char reify; 669 unsigned char unused;
670#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif
283#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
284 SOCKET handle; 674 SOCKET handle;
285#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
286} ANFD; 679} ANFD;
287 680
681/* stores the pending event set for a given watcher */
288typedef struct 682typedef struct
289{ 683{
290 W w; 684 W w;
291 int events; 685 int events; /* the pending event set for the given watcher */
292} ANPENDING; 686} ANPENDING;
687
688#if EV_USE_INOTIFY
689/* hash table entry per inotify-id */
690typedef struct
691{
692 WL head;
693} ANFS;
694#endif
695
696/* Heap Entry */
697#if EV_HEAP_CACHE_AT
698 /* a heap element */
699 typedef struct {
700 ev_tstamp at;
701 WT w;
702 } ANHE;
703
704 #define ANHE_w(he) (he).w /* access watcher, read-write */
705 #define ANHE_at(he) (he).at /* access cached at, read-only */
706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
707#else
708 /* a heap element */
709 typedef WT ANHE;
710
711 #define ANHE_w(he) (he)
712 #define ANHE_at(he) (he)->at
713 #define ANHE_at_cache(he)
714#endif
293 715
294#if EV_MULTIPLICITY 716#if EV_MULTIPLICITY
295 717
296 struct ev_loop 718 struct ev_loop
297 { 719 {
… …
315 737
316 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
317 739
318#endif 740#endif
319 741
742#if EV_FEATURE_API
743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
745# define EV_INVOKE_PENDING invoke_cb (EV_A)
746#else
747# define EV_RELEASE_CB (void)0
748# define EV_ACQUIRE_CB (void)0
749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
750#endif
751
752#define EVBREAK_RECURSE 0x80
753
320/*****************************************************************************/ 754/*****************************************************************************/
321 755
756#ifndef EV_HAVE_EV_TIME
322ev_tstamp 757ev_tstamp
323ev_time (void) 758ev_time (void)
324{ 759{
325#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
326 struct timespec ts; 763 struct timespec ts;
327 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
328 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
329#else 766 }
767#endif
768
330 struct timeval tv; 769 struct timeval tv;
331 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
332 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
333#endif
334} 772}
773#endif
335 774
336ev_tstamp inline_size 775inline_size ev_tstamp
337get_clock (void) 776get_clock (void)
338{ 777{
339#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
340 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
341 { 780 {
… …
354{ 793{
355 return ev_rt_now; 794 return ev_rt_now;
356} 795}
357#endif 796#endif
358 797
359#define array_roundsize(type,n) (((n) | 4) & ~3) 798void
799ev_sleep (ev_tstamp delay)
800{
801 if (delay > 0.)
802 {
803#if EV_USE_NANOSLEEP
804 struct timespec ts;
805
806 EV_TS_SET (ts, delay);
807 nanosleep (&ts, 0);
808#elif defined(_WIN32)
809 Sleep ((unsigned long)(delay * 1e3));
810#else
811 struct timeval tv;
812
813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
814 /* something not guaranteed by newer posix versions, but guaranteed */
815 /* by older ones */
816 EV_TV_SET (tv, delay);
817 select (0, 0, 0, 0, &tv);
818#endif
819 }
820}
821
822/*****************************************************************************/
823
824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
825
826/* find a suitable new size for the given array, */
827/* hopefully by rounding to a nice-to-malloc size */
828inline_size int
829array_nextsize (int elem, int cur, int cnt)
830{
831 int ncur = cur + 1;
832
833 do
834 ncur <<= 1;
835 while (cnt > ncur);
836
837 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
838 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
839 {
840 ncur *= elem;
841 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
842 ncur = ncur - sizeof (void *) * 4;
843 ncur /= elem;
844 }
845
846 return ncur;
847}
848
849static noinline void *
850array_realloc (int elem, void *base, int *cur, int cnt)
851{
852 *cur = array_nextsize (elem, *cur, cnt);
853 return ev_realloc (base, elem * *cur);
854}
855
856#define array_init_zero(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count))
360 858
361#define array_needsize(type,base,cur,cnt,init) \ 859#define array_needsize(type,base,cur,cnt,init) \
362 if (expect_false ((cnt) > cur)) \ 860 if (expect_false ((cnt) > (cur))) \
363 { \ 861 { \
364 int newcnt = cur; \ 862 int ocur_ = (cur); \
365 do \ 863 (base) = (type *)array_realloc \
366 { \ 864 (sizeof (type), (base), &(cur), (cnt)); \
367 newcnt = array_roundsize (type, newcnt << 1); \ 865 init ((base) + (ocur_), (cur) - ocur_); \
368 } \
369 while ((cnt) > newcnt); \
370 \
371 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
372 init (base + cur, newcnt - cur); \
373 cur = newcnt; \
374 } 866 }
375 867
868#if 0
376#define array_slim(type,stem) \ 869#define array_slim(type,stem) \
377 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 870 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378 { \ 871 { \
379 stem ## max = array_roundsize (stem ## cnt >> 1); \ 872 stem ## max = array_roundsize (stem ## cnt >> 1); \
380 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 873 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
381 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
382 } 875 }
876#endif
383 877
384#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
385 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
386 880
387/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
388 888
389void noinline 889void noinline
390ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
391{ 891{
392 W w_ = (W)w; 892 W w_ = (W)w;
893 int pri = ABSPRI (w_);
393 894
394 if (expect_false (w_->pending)) 895 if (expect_false (w_->pending))
896 pendings [pri][w_->pending - 1].events |= revents;
897 else
395 { 898 {
899 w_->pending = ++pendingcnt [pri];
900 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
901 pendings [pri][w_->pending - 1].w = w_;
396 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 902 pendings [pri][w_->pending - 1].events = revents;
397 return;
398 } 903 }
399
400 w_->pending = ++pendingcnt [ABSPRI (w_)];
401 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
402 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
403 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
404} 904}
405 905
406void inline_size 906inline_speed void
907feed_reverse (EV_P_ W w)
908{
909 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
910 rfeeds [rfeedcnt++] = w;
911}
912
913inline_size void
914feed_reverse_done (EV_P_ int revents)
915{
916 do
917 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
918 while (rfeedcnt);
919}
920
921inline_speed void
407queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
408{ 923{
409 int i; 924 int i;
410 925
411 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
412 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
413} 928}
414 929
415/*****************************************************************************/ 930/*****************************************************************************/
416 931
417void inline_size 932inline_speed void
418anfds_init (ANFD *base, int count)
419{
420 while (count--)
421 {
422 base->head = 0;
423 base->events = EV_NONE;
424 base->reify = 0;
425
426 ++base;
427 }
428}
429
430void inline_speed
431fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
432{ 934{
433 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
434 ev_io *w; 936 ev_io *w;
435 937
436 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
440 if (ev) 942 if (ev)
441 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
442 } 944 }
443} 945}
444 946
947/* do not submit kernel events for fds that have reify set */
948/* because that means they changed while we were polling for new events */
949inline_speed void
950fd_event (EV_P_ int fd, int revents)
951{
952 ANFD *anfd = anfds + fd;
953
954 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents);
956}
957
445void 958void
446ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
447{ 960{
961 if (fd >= 0 && fd < anfdmax)
448 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
449} 963}
450 964
451void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
452fd_reify (EV_P) 968fd_reify (EV_P)
453{ 969{
454 int i; 970 int i;
455 971
456 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
457 { 973 {
458 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
459 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
460 ev_io *w; 976 ev_io *w;
461 977
462 int events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
463 980
464 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
465 events |= w->events;
466 982
467#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
468 if (events) 984 if (o_reify & EV__IOFDSET)
469 { 985 {
470 unsigned long argp; 986 unsigned long arg;
471 anfd->handle = _get_osfhandle (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
472 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
473 } 990 }
474#endif 991#endif
475 992
476 anfd->reify = 0; 993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
994 {
995 anfd->events = 0;
477 996
997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
478 backend_modify (EV_A_ fd, anfd->events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
479 anfd->events = events;
480 } 1006 }
481 1007
482 fdchangecnt = 0; 1008 fdchangecnt = 0;
483} 1009}
484 1010
485void inline_size 1011/* something about the given fd changed */
1012inline_size void
486fd_change (EV_P_ int fd) 1013fd_change (EV_P_ int fd, int flags)
487{ 1014{
488 if (expect_false (anfds [fd].reify)) 1015 unsigned char reify = anfds [fd].reify;
489 return;
490
491 anfds [fd].reify = 1; 1016 anfds [fd].reify |= flags;
492 1017
1018 if (expect_true (!reify))
1019 {
493 ++fdchangecnt; 1020 ++fdchangecnt;
494 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
495 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
1023 }
496} 1024}
497 1025
498void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
499fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
500{ 1029{
501 ev_io *w; 1030 ev_io *w;
502 1031
503 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
505 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
506 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
507 } 1036 }
508} 1037}
509 1038
510int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
511fd_valid (int fd) 1041fd_valid (int fd)
512{ 1042{
513#ifdef _WIN32 1043#ifdef _WIN32
514 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
515#else 1045#else
516 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
517#endif 1047#endif
518} 1048}
519 1049
… …
523{ 1053{
524 int fd; 1054 int fd;
525 1055
526 for (fd = 0; fd < anfdmax; ++fd) 1056 for (fd = 0; fd < anfdmax; ++fd)
527 if (anfds [fd].events) 1057 if (anfds [fd].events)
528 if (!fd_valid (fd) == -1 && errno == EBADF) 1058 if (!fd_valid (fd) && errno == EBADF)
529 fd_kill (EV_A_ fd); 1059 fd_kill (EV_A_ fd);
530} 1060}
531 1061
532/* called on ENOMEM in select/poll to kill some fds and retry */ 1062/* called on ENOMEM in select/poll to kill some fds and retry */
533static void noinline 1063static void noinline
… …
537 1067
538 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
539 if (anfds [fd].events) 1069 if (anfds [fd].events)
540 { 1070 {
541 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
542 return; 1072 break;
543 } 1073 }
544} 1074}
545 1075
546/* usually called after fork if backend needs to re-arm all fds from scratch */ 1076/* usually called after fork if backend needs to re-arm all fds from scratch */
547static void noinline 1077static void noinline
548fd_rearm_all (EV_P) 1078fd_rearm_all (EV_P)
549{ 1079{
550 int fd; 1080 int fd;
551 1081
552 /* this should be highly optimised to not do anything but set a flag */
553 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
554 if (anfds [fd].events) 1083 if (anfds [fd].events)
555 { 1084 {
556 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
557 fd_change (EV_A_ fd); 1086 anfds [fd].emask = 0;
1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
558 } 1088 }
559} 1089}
560 1090
561/*****************************************************************************/ 1091/* used to prepare libev internal fd's */
562 1092/* this is not fork-safe */
563void inline_speed 1093inline_speed void
564upheap (WT *heap, int k)
565{
566 WT w = heap [k];
567
568 while (k && heap [k >> 1]->at > w->at)
569 {
570 heap [k] = heap [k >> 1];
571 ((W)heap [k])->active = k + 1;
572 k >>= 1;
573 }
574
575 heap [k] = w;
576 ((W)heap [k])->active = k + 1;
577
578}
579
580void inline_speed
581downheap (WT *heap, int N, int k)
582{
583 WT w = heap [k];
584
585 while (k < (N >> 1))
586 {
587 int j = k << 1;
588
589 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
590 ++j;
591
592 if (w->at <= heap [j]->at)
593 break;
594
595 heap [k] = heap [j];
596 ((W)heap [k])->active = k + 1;
597 k = j;
598 }
599
600 heap [k] = w;
601 ((W)heap [k])->active = k + 1;
602}
603
604void inline_size
605adjustheap (WT *heap, int N, int k)
606{
607 upheap (heap, k);
608 downheap (heap, N, k);
609}
610
611/*****************************************************************************/
612
613typedef struct
614{
615 WL head;
616 sig_atomic_t volatile gotsig;
617} ANSIG;
618
619static ANSIG *signals;
620static int signalmax;
621
622static int sigpipe [2];
623static sig_atomic_t volatile gotsig;
624static ev_io sigev;
625
626void inline_size
627signals_init (ANSIG *base, int count)
628{
629 while (count--)
630 {
631 base->head = 0;
632 base->gotsig = 0;
633
634 ++base;
635 }
636}
637
638static void
639sighandler (int signum)
640{
641#if _WIN32
642 signal (signum, sighandler);
643#endif
644
645 signals [signum - 1].gotsig = 1;
646
647 if (!gotsig)
648 {
649 int old_errno = errno;
650 gotsig = 1;
651 write (sigpipe [1], &signum, 1);
652 errno = old_errno;
653 }
654}
655
656void noinline
657ev_feed_signal_event (EV_P_ int signum)
658{
659 WL w;
660
661#if EV_MULTIPLICITY
662 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
663#endif
664
665 --signum;
666
667 if (signum < 0 || signum >= signalmax)
668 return;
669
670 signals [signum].gotsig = 0;
671
672 for (w = signals [signum].head; w; w = w->next)
673 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
674}
675
676static void
677sigcb (EV_P_ ev_io *iow, int revents)
678{
679 int signum;
680
681 read (sigpipe [0], &revents, 1);
682 gotsig = 0;
683
684 for (signum = signalmax; signum--; )
685 if (signals [signum].gotsig)
686 ev_feed_signal_event (EV_A_ signum + 1);
687}
688
689void inline_size
690fd_intern (int fd) 1094fd_intern (int fd)
691{ 1095{
692#ifdef _WIN32 1096#ifdef _WIN32
693 int arg = 1; 1097 unsigned long arg = 1;
694 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
695#else 1099#else
696 fcntl (fd, F_SETFD, FD_CLOEXEC); 1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
697 fcntl (fd, F_SETFL, O_NONBLOCK); 1101 fcntl (fd, F_SETFL, O_NONBLOCK);
698#endif 1102#endif
699} 1103}
700 1104
1105/*****************************************************************************/
1106
1107/*
1108 * the heap functions want a real array index. array index 0 is guaranteed to not
1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1110 * the branching factor of the d-tree.
1111 */
1112
1113/*
1114 * at the moment we allow libev the luxury of two heaps,
1115 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1116 * which is more cache-efficient.
1117 * the difference is about 5% with 50000+ watchers.
1118 */
1119#if EV_USE_4HEAP
1120
1121#define DHEAP 4
1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1124#define UPHEAP_DONE(p,k) ((p) == (k))
1125
1126/* away from the root */
1127inline_speed void
1128downheap (ANHE *heap, int N, int k)
1129{
1130 ANHE he = heap [k];
1131 ANHE *E = heap + N + HEAP0;
1132
1133 for (;;)
1134 {
1135 ev_tstamp minat;
1136 ANHE *minpos;
1137 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1138
1139 /* find minimum child */
1140 if (expect_true (pos + DHEAP - 1 < E))
1141 {
1142 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1143 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1144 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1145 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1146 }
1147 else if (pos < E)
1148 {
1149 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1150 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1151 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1152 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1153 }
1154 else
1155 break;
1156
1157 if (ANHE_at (he) <= minat)
1158 break;
1159
1160 heap [k] = *minpos;
1161 ev_active (ANHE_w (*minpos)) = k;
1162
1163 k = minpos - heap;
1164 }
1165
1166 heap [k] = he;
1167 ev_active (ANHE_w (he)) = k;
1168}
1169
1170#else /* 4HEAP */
1171
1172#define HEAP0 1
1173#define HPARENT(k) ((k) >> 1)
1174#define UPHEAP_DONE(p,k) (!(p))
1175
1176/* away from the root */
1177inline_speed void
1178downheap (ANHE *heap, int N, int k)
1179{
1180 ANHE he = heap [k];
1181
1182 for (;;)
1183 {
1184 int c = k << 1;
1185
1186 if (c >= N + HEAP0)
1187 break;
1188
1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1190 ? 1 : 0;
1191
1192 if (ANHE_at (he) <= ANHE_at (heap [c]))
1193 break;
1194
1195 heap [k] = heap [c];
1196 ev_active (ANHE_w (heap [k])) = k;
1197
1198 k = c;
1199 }
1200
1201 heap [k] = he;
1202 ev_active (ANHE_w (he)) = k;
1203}
1204#endif
1205
1206/* towards the root */
1207inline_speed void
1208upheap (ANHE *heap, int k)
1209{
1210 ANHE he = heap [k];
1211
1212 for (;;)
1213 {
1214 int p = HPARENT (k);
1215
1216 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1217 break;
1218
1219 heap [k] = heap [p];
1220 ev_active (ANHE_w (heap [k])) = k;
1221 k = p;
1222 }
1223
1224 heap [k] = he;
1225 ev_active (ANHE_w (he)) = k;
1226}
1227
1228/* move an element suitably so it is in a correct place */
1229inline_size void
1230adjustheap (ANHE *heap, int N, int k)
1231{
1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1233 upheap (heap, k);
1234 else
1235 downheap (heap, N, k);
1236}
1237
1238/* rebuild the heap: this function is used only once and executed rarely */
1239inline_size void
1240reheap (ANHE *heap, int N)
1241{
1242 int i;
1243
1244 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1245 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1246 for (i = 0; i < N; ++i)
1247 upheap (heap, i + HEAP0);
1248}
1249
1250/*****************************************************************************/
1251
1252/* associate signal watchers to a signal signal */
1253typedef struct
1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
1259 WL head;
1260} ANSIG;
1261
1262static ANSIG signals [EV_NSIG - 1];
1263
1264/*****************************************************************************/
1265
1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1267
701static void noinline 1268static void noinline
702siginit (EV_P) 1269evpipe_init (EV_P)
703{ 1270{
1271 if (!ev_is_active (&pipe_w))
1272 {
1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
1279 {
1280 evpipe [0] = -1;
1281 fd_intern (evfd); /* doing it twice doesn't hurt */
1282 ev_io_set (&pipe_w, evfd, EV_READ);
1283 }
1284 else
1285# endif
1286 {
1287 while (pipe (evpipe))
1288 ev_syserr ("(libev) error creating signal/async pipe");
1289
704 fd_intern (sigpipe [0]); 1290 fd_intern (evpipe [0]);
705 fd_intern (sigpipe [1]); 1291 fd_intern (evpipe [1]);
1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1293 }
706 1294
707 ev_io_set (&sigev, sigpipe [0], EV_READ);
708 ev_io_start (EV_A_ &sigev); 1295 ev_io_start (EV_A_ &pipe_w);
709 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1297 }
1298}
1299
1300inline_size void
1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1302{
1303 if (!*flag)
1304 {
1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1307
1308 *flag = 1;
1309
1310#if EV_USE_EVENTFD
1311 if (evfd >= 0)
1312 {
1313 uint64_t counter = 1;
1314 write (evfd, &counter, sizeof (uint64_t));
1315 }
1316 else
1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1323 write (evpipe [1], &dummy, 1);
1324
1325 errno = old_errno;
1326 }
1327}
1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
1331static void
1332pipecb (EV_P_ ev_io *iow, int revents)
1333{
1334 int i;
1335
1336#if EV_USE_EVENTFD
1337 if (evfd >= 0)
1338 {
1339 uint64_t counter;
1340 read (evfd, &counter, sizeof (uint64_t));
1341 }
1342 else
1343#endif
1344 {
1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1347 read (evpipe [0], &dummy, 1);
1348 }
1349
1350 if (sig_pending)
1351 {
1352 sig_pending = 0;
1353
1354 for (i = EV_NSIG - 1; i--; )
1355 if (expect_false (signals [i].pending))
1356 ev_feed_signal_event (EV_A_ i + 1);
1357 }
1358
1359#if EV_ASYNC_ENABLE
1360 if (async_pending)
1361 {
1362 async_pending = 0;
1363
1364 for (i = asynccnt; i--; )
1365 if (asyncs [i]->sent)
1366 {
1367 asyncs [i]->sent = 0;
1368 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1369 }
1370 }
1371#endif
710} 1372}
711 1373
712/*****************************************************************************/ 1374/*****************************************************************************/
713 1375
714static ev_child *childs [PID_HASHSIZE]; 1376static void
1377ev_sighandler (int signum)
1378{
1379#if EV_MULTIPLICITY
1380 EV_P = signals [signum - 1].loop;
1381#endif
715 1382
716#ifndef _WIN32 1383#ifdef _WIN32
1384 signal (signum, ev_sighandler);
1385#endif
1386
1387 signals [signum - 1].pending = 1;
1388 evpipe_write (EV_A_ &sig_pending);
1389}
1390
1391void noinline
1392ev_feed_signal_event (EV_P_ int signum)
1393{
1394 WL w;
1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1401#if EV_MULTIPLICITY
1402 /* it is permissible to try to feed a signal to the wrong loop */
1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1404
1405 if (expect_false (signals [signum].loop != EV_A))
1406 return;
1407#endif
1408
1409 signals [signum].pending = 0;
1410
1411 for (w = signals [signum].head; w; w = w->next)
1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1413}
1414
1415#if EV_USE_SIGNALFD
1416static void
1417sigfdcb (EV_P_ ev_io *iow, int revents)
1418{
1419 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1420
1421 for (;;)
1422 {
1423 ssize_t res = read (sigfd, si, sizeof (si));
1424
1425 /* not ISO-C, as res might be -1, but works with SuS */
1426 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1427 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1428
1429 if (res < (ssize_t)sizeof (si))
1430 break;
1431 }
1432}
1433#endif
1434
1435#endif
1436
1437/*****************************************************************************/
1438
1439#if EV_CHILD_ENABLE
1440static WL childs [EV_PID_HASHSIZE];
717 1441
718static ev_signal childev; 1442static ev_signal childev;
1443
1444#ifndef WIFCONTINUED
1445# define WIFCONTINUED(status) 0
1446#endif
1447
1448/* handle a single child status event */
1449inline_speed void
1450child_reap (EV_P_ int chain, int pid, int status)
1451{
1452 ev_child *w;
1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1454
1455 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1456 {
1457 if ((w->pid == pid || !w->pid)
1458 && (!traced || (w->flags & 1)))
1459 {
1460 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1461 w->rpid = pid;
1462 w->rstatus = status;
1463 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1464 }
1465 }
1466}
719 1467
720#ifndef WCONTINUED 1468#ifndef WCONTINUED
721# define WCONTINUED 0 1469# define WCONTINUED 0
722#endif 1470#endif
723 1471
724void inline_speed 1472/* called on sigchld etc., calls waitpid */
725child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
726{
727 ev_child *w;
728
729 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
730 if (w->pid == pid || !w->pid)
731 {
732 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
733 w->rpid = pid;
734 w->rstatus = status;
735 ev_feed_event (EV_A_ (W)w, EV_CHILD);
736 }
737}
738
739static void 1473static void
740childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
741{ 1475{
742 int pid, status; 1476 int pid, status;
743 1477
1478 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
744 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1479 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
745 { 1480 if (!WCONTINUED
1481 || errno != EINVAL
1482 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1483 return;
1484
746 /* make sure we are called again until all childs have been reaped */ 1485 /* make sure we are called again until all children have been reaped */
747 /* we need to do it this way so that the callback gets called before we continue */ 1486 /* we need to do it this way so that the callback gets called before we continue */
748 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
749 1488
750 child_reap (EV_A_ sw, pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1490 if ((EV_PID_HASHSIZE) > 1)
751 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1491 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
752 }
753} 1492}
754 1493
755#endif 1494#endif
756 1495
757/*****************************************************************************/ 1496/*****************************************************************************/
758 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
759#if EV_USE_PORT 1501#if EV_USE_PORT
760# include "ev_port.c" 1502# include "ev_port.c"
761#endif 1503#endif
762#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
763# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
819 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
820 /* it usually doesn't work correctly on anything but sockets and pipes */ 1562 /* it usually doesn't work correctly on anything but sockets and pipes */
821 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
822#endif 1564#endif
823#ifdef __APPLE__ 1565#ifdef __APPLE__
824 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
825 flags &= ~EVBACKEND_POLL; 1567 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1568 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1569#endif
1570#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
826#endif 1572#endif
827 1573
828 return flags; 1574 return flags;
829} 1575}
830 1576
831unsigned int 1577unsigned int
832ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
833{ 1579{
834 return EVBACKEND_EPOLL 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
835 | EVBACKEND_KQUEUE 1581
836 | EVBACKEND_PORT; 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1584 flags &= ~EVBACKEND_EPOLL;
1585
1586 return flags;
837} 1587}
838 1588
839unsigned int 1589unsigned int
840ev_backend (EV_P) 1590ev_backend (EV_P)
841{ 1591{
842 return backend; 1592 return backend;
843} 1593}
844 1594
845static void 1595#if EV_FEATURE_API
1596unsigned int
1597ev_iteration (EV_P)
1598{
1599 return loop_count;
1600}
1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
1608void
1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1610{
1611 io_blocktime = interval;
1612}
1613
1614void
1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1616{
1617 timeout_blocktime = interval;
1618}
1619
1620void
1621ev_set_userdata (EV_P_ void *data)
1622{
1623 userdata = data;
1624}
1625
1626void *
1627ev_userdata (EV_P)
1628{
1629 return userdata;
1630}
1631
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1633{
1634 invoke_cb = invoke_pending_cb;
1635}
1636
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1638{
1639 release_cb = release;
1640 acquire_cb = acquire;
1641}
1642#endif
1643
1644/* initialise a loop structure, must be zero-initialised */
1645static void noinline
846loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
847{ 1647{
848 if (!backend) 1648 if (!backend)
849 { 1649 {
1650#if EV_USE_REALTIME
1651 if (!have_realtime)
1652 {
1653 struct timespec ts;
1654
1655 if (!clock_gettime (CLOCK_REALTIME, &ts))
1656 have_realtime = 1;
1657 }
1658#endif
1659
850#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
851 { 1662 {
852 struct timespec ts; 1663 struct timespec ts;
1664
853 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
854 have_monotonic = 1; 1666 have_monotonic = 1;
855 } 1667 }
856#endif 1668#endif
857 1669
858 ev_rt_now = ev_time (); 1670 /* pid check not overridable via env */
859 mn_now = get_clock (); 1671#ifndef _WIN32
860 now_floor = mn_now; 1672 if (flags & EVFLAG_FORKCHECK)
861 rtmn_diff = ev_rt_now - mn_now; 1673 curpid = getpid ();
1674#endif
862 1675
863 if (!(flags & EVFLAG_NOENV) 1676 if (!(flags & EVFLAG_NOENV)
864 && !enable_secure () 1677 && !enable_secure ()
865 && getenv ("LIBEV_FLAGS")) 1678 && getenv ("LIBEV_FLAGS"))
866 flags = atoi (getenv ("LIBEV_FLAGS")); 1679 flags = atoi (getenv ("LIBEV_FLAGS"));
867 1680
1681 ev_rt_now = ev_time ();
1682 mn_now = get_clock ();
1683 now_floor = mn_now;
1684 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending;
1687#endif
1688
1689 io_blocktime = 0.;
1690 timeout_blocktime = 0.;
1691 backend = 0;
1692 backend_fd = -1;
1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1697#if EV_USE_INOTIFY
1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1699#endif
1700#if EV_USE_SIGNALFD
1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1702#endif
1703
868 if (!(flags & 0x0000ffffUL)) 1704 if (!(flags & 0x0000ffffU))
869 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
870 1706
871 backend = 0; 1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
872#if EV_USE_PORT 1710#if EV_USE_PORT
873 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
874#endif 1712#endif
875#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
876 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
883#endif 1721#endif
884#if EV_USE_SELECT 1722#if EV_USE_SELECT
885 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
886#endif 1724#endif
887 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
888 ev_init (&sigev, sigcb); 1729 ev_init (&pipe_w, pipecb);
889 ev_set_priority (&sigev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
890 } 1732 }
891} 1733}
892 1734
893static void 1735/* free up a loop structure */
1736static void noinline
894loop_destroy (EV_P) 1737loop_destroy (EV_P)
895{ 1738{
896 int i; 1739 int i;
897 1740
1741 if (ev_is_active (&pipe_w))
1742 {
1743 /*ev_ref (EV_A);*/
1744 /*ev_io_stop (EV_A_ &pipe_w);*/
1745
1746#if EV_USE_EVENTFD
1747 if (evfd >= 0)
1748 close (evfd);
1749#endif
1750
1751 if (evpipe [0] >= 0)
1752 {
1753 EV_WIN32_CLOSE_FD (evpipe [0]);
1754 EV_WIN32_CLOSE_FD (evpipe [1]);
1755 }
1756 }
1757
1758#if EV_USE_SIGNALFD
1759 if (ev_is_active (&sigfd_w))
1760 close (sigfd);
1761#endif
1762
1763#if EV_USE_INOTIFY
1764 if (fs_fd >= 0)
1765 close (fs_fd);
1766#endif
1767
1768 if (backend_fd >= 0)
1769 close (backend_fd);
1770
1771#if EV_USE_IOCP
1772 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1773#endif
898#if EV_USE_PORT 1774#if EV_USE_PORT
899 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1775 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
900#endif 1776#endif
901#if EV_USE_KQUEUE 1777#if EV_USE_KQUEUE
902 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1778 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
910#if EV_USE_SELECT 1786#if EV_USE_SELECT
911 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1787 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
912#endif 1788#endif
913 1789
914 for (i = NUMPRI; i--; ) 1790 for (i = NUMPRI; i--; )
1791 {
915 array_free (pending, [i]); 1792 array_free (pending, [i]);
1793#if EV_IDLE_ENABLE
1794 array_free (idle, [i]);
1795#endif
1796 }
1797
1798 ev_free (anfds); anfds = 0; anfdmax = 0;
916 1799
917 /* have to use the microsoft-never-gets-it-right macro */ 1800 /* have to use the microsoft-never-gets-it-right macro */
1801 array_free (rfeed, EMPTY);
918 array_free (fdchange, EMPTY0); 1802 array_free (fdchange, EMPTY);
919 array_free (timer, EMPTY0); 1803 array_free (timer, EMPTY);
920#if EV_PERIODIC_ENABLE 1804#if EV_PERIODIC_ENABLE
921 array_free (periodic, EMPTY0); 1805 array_free (periodic, EMPTY);
922#endif 1806#endif
1807#if EV_FORK_ENABLE
923 array_free (idle, EMPTY0); 1808 array_free (fork, EMPTY);
1809#endif
924 array_free (prepare, EMPTY0); 1810 array_free (prepare, EMPTY);
925 array_free (check, EMPTY0); 1811 array_free (check, EMPTY);
1812#if EV_ASYNC_ENABLE
1813 array_free (async, EMPTY);
1814#endif
926 1815
927 backend = 0; 1816 backend = 0;
928} 1817}
929 1818
930static void 1819#if EV_USE_INOTIFY
1820inline_size void infy_fork (EV_P);
1821#endif
1822
1823inline_size void
931loop_fork (EV_P) 1824loop_fork (EV_P)
932{ 1825{
933#if EV_USE_PORT 1826#if EV_USE_PORT
934 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1827 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
935#endif 1828#endif
… …
937 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1830 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
938#endif 1831#endif
939#if EV_USE_EPOLL 1832#if EV_USE_EPOLL
940 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1833 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
941#endif 1834#endif
1835#if EV_USE_INOTIFY
1836 infy_fork (EV_A);
1837#endif
942 1838
943 if (ev_is_active (&sigev)) 1839 if (ev_is_active (&pipe_w))
944 { 1840 {
945 /* default loop */ 1841 /* this "locks" the handlers against writing to the pipe */
1842 /* while we modify the fd vars */
1843 sig_pending = 1;
1844#if EV_ASYNC_ENABLE
1845 async_pending = 1;
1846#endif
946 1847
947 ev_ref (EV_A); 1848 ev_ref (EV_A);
948 ev_io_stop (EV_A_ &sigev); 1849 ev_io_stop (EV_A_ &pipe_w);
949 close (sigpipe [0]);
950 close (sigpipe [1]);
951 1850
952 while (pipe (sigpipe)) 1851#if EV_USE_EVENTFD
953 syserr ("(libev) error creating pipe"); 1852 if (evfd >= 0)
1853 close (evfd);
1854#endif
954 1855
1856 if (evpipe [0] >= 0)
1857 {
1858 EV_WIN32_CLOSE_FD (evpipe [0]);
1859 EV_WIN32_CLOSE_FD (evpipe [1]);
1860 }
1861
1862#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
955 siginit (EV_A); 1863 evpipe_init (EV_A);
1864 /* now iterate over everything, in case we missed something */
1865 pipecb (EV_A_ &pipe_w, EV_READ);
1866#endif
956 } 1867 }
957 1868
958 postfork = 0; 1869 postfork = 0;
959} 1870}
1871
1872#if EV_MULTIPLICITY
1873
1874struct ev_loop *
1875ev_loop_new (unsigned int flags)
1876{
1877 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1878
1879 memset (EV_A, 0, sizeof (struct ev_loop));
1880 loop_init (EV_A_ flags);
1881
1882 if (ev_backend (EV_A))
1883 return EV_A;
1884
1885 return 0;
1886}
1887
1888void
1889ev_loop_destroy (EV_P)
1890{
1891 loop_destroy (EV_A);
1892 ev_free (loop);
1893}
1894
1895void
1896ev_loop_fork (EV_P)
1897{
1898 postfork = 1; /* must be in line with ev_default_fork */
1899}
1900#endif /* multiplicity */
1901
1902#if EV_VERIFY
1903static void noinline
1904verify_watcher (EV_P_ W w)
1905{
1906 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1907
1908 if (w->pending)
1909 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1910}
1911
1912static void noinline
1913verify_heap (EV_P_ ANHE *heap, int N)
1914{
1915 int i;
1916
1917 for (i = HEAP0; i < N + HEAP0; ++i)
1918 {
1919 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1920 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1921 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1922
1923 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1924 }
1925}
1926
1927static void noinline
1928array_verify (EV_P_ W *ws, int cnt)
1929{
1930 while (cnt--)
1931 {
1932 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1933 verify_watcher (EV_A_ ws [cnt]);
1934 }
1935}
1936#endif
1937
1938#if EV_FEATURE_API
1939void
1940ev_verify (EV_P)
1941{
1942#if EV_VERIFY
1943 int i;
1944 WL w;
1945
1946 assert (activecnt >= -1);
1947
1948 assert (fdchangemax >= fdchangecnt);
1949 for (i = 0; i < fdchangecnt; ++i)
1950 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1951
1952 assert (anfdmax >= 0);
1953 for (i = 0; i < anfdmax; ++i)
1954 for (w = anfds [i].head; w; w = w->next)
1955 {
1956 verify_watcher (EV_A_ (W)w);
1957 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1958 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1959 }
1960
1961 assert (timermax >= timercnt);
1962 verify_heap (EV_A_ timers, timercnt);
1963
1964#if EV_PERIODIC_ENABLE
1965 assert (periodicmax >= periodiccnt);
1966 verify_heap (EV_A_ periodics, periodiccnt);
1967#endif
1968
1969 for (i = NUMPRI; i--; )
1970 {
1971 assert (pendingmax [i] >= pendingcnt [i]);
1972#if EV_IDLE_ENABLE
1973 assert (idleall >= 0);
1974 assert (idlemax [i] >= idlecnt [i]);
1975 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1976#endif
1977 }
1978
1979#if EV_FORK_ENABLE
1980 assert (forkmax >= forkcnt);
1981 array_verify (EV_A_ (W *)forks, forkcnt);
1982#endif
1983
1984#if EV_ASYNC_ENABLE
1985 assert (asyncmax >= asynccnt);
1986 array_verify (EV_A_ (W *)asyncs, asynccnt);
1987#endif
1988
1989#if EV_PREPARE_ENABLE
1990 assert (preparemax >= preparecnt);
1991 array_verify (EV_A_ (W *)prepares, preparecnt);
1992#endif
1993
1994#if EV_CHECK_ENABLE
1995 assert (checkmax >= checkcnt);
1996 array_verify (EV_A_ (W *)checks, checkcnt);
1997#endif
1998
1999# if 0
2000#if EV_CHILD_ENABLE
2001 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2002 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2003#endif
2004# endif
2005#endif
2006}
2007#endif
960 2008
961#if EV_MULTIPLICITY 2009#if EV_MULTIPLICITY
962struct ev_loop * 2010struct ev_loop *
963ev_loop_new (unsigned int flags)
964{
965 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
966
967 memset (loop, 0, sizeof (struct ev_loop));
968
969 loop_init (EV_A_ flags);
970
971 if (ev_backend (EV_A))
972 return loop;
973
974 return 0;
975}
976
977void
978ev_loop_destroy (EV_P)
979{
980 loop_destroy (EV_A);
981 ev_free (loop);
982}
983
984void
985ev_loop_fork (EV_P)
986{
987 postfork = 1;
988}
989
990#endif
991
992#if EV_MULTIPLICITY
993struct ev_loop *
994ev_default_loop_init (unsigned int flags)
995#else 2011#else
996int 2012int
2013#endif
997ev_default_loop (unsigned int flags) 2014ev_default_loop (unsigned int flags)
998#endif
999{ 2015{
1000 if (sigpipe [0] == sigpipe [1])
1001 if (pipe (sigpipe))
1002 return 0;
1003
1004 if (!ev_default_loop_ptr) 2016 if (!ev_default_loop_ptr)
1005 { 2017 {
1006#if EV_MULTIPLICITY 2018#if EV_MULTIPLICITY
1007 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2019 EV_P = ev_default_loop_ptr = &default_loop_struct;
1008#else 2020#else
1009 ev_default_loop_ptr = 1; 2021 ev_default_loop_ptr = 1;
1010#endif 2022#endif
1011 2023
1012 loop_init (EV_A_ flags); 2024 loop_init (EV_A_ flags);
1013 2025
1014 if (ev_backend (EV_A)) 2026 if (ev_backend (EV_A))
1015 { 2027 {
1016 siginit (EV_A); 2028#if EV_CHILD_ENABLE
1017
1018#ifndef _WIN32
1019 ev_signal_init (&childev, childcb, SIGCHLD); 2029 ev_signal_init (&childev, childcb, SIGCHLD);
1020 ev_set_priority (&childev, EV_MAXPRI); 2030 ev_set_priority (&childev, EV_MAXPRI);
1021 ev_signal_start (EV_A_ &childev); 2031 ev_signal_start (EV_A_ &childev);
1022 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2032 ev_unref (EV_A); /* child watcher should not keep loop alive */
1023#endif 2033#endif
… …
1031 2041
1032void 2042void
1033ev_default_destroy (void) 2043ev_default_destroy (void)
1034{ 2044{
1035#if EV_MULTIPLICITY 2045#if EV_MULTIPLICITY
1036 struct ev_loop *loop = ev_default_loop_ptr; 2046 EV_P = ev_default_loop_ptr;
1037#endif 2047#endif
1038 2048
1039#ifndef _WIN32 2049 ev_default_loop_ptr = 0;
2050
2051#if EV_CHILD_ENABLE
1040 ev_ref (EV_A); /* child watcher */ 2052 ev_ref (EV_A); /* child watcher */
1041 ev_signal_stop (EV_A_ &childev); 2053 ev_signal_stop (EV_A_ &childev);
1042#endif 2054#endif
1043 2055
1044 ev_ref (EV_A); /* signal watcher */
1045 ev_io_stop (EV_A_ &sigev);
1046
1047 close (sigpipe [0]); sigpipe [0] = 0;
1048 close (sigpipe [1]); sigpipe [1] = 0;
1049
1050 loop_destroy (EV_A); 2056 loop_destroy (EV_A);
1051} 2057}
1052 2058
1053void 2059void
1054ev_default_fork (void) 2060ev_default_fork (void)
1055{ 2061{
1056#if EV_MULTIPLICITY 2062#if EV_MULTIPLICITY
1057 struct ev_loop *loop = ev_default_loop_ptr; 2063 EV_P = ev_default_loop_ptr;
1058#endif 2064#endif
1059 2065
1060 if (backend) 2066 postfork = 1; /* must be in line with ev_loop_fork */
1061 postfork = 1;
1062} 2067}
1063 2068
1064/*****************************************************************************/ 2069/*****************************************************************************/
1065 2070
1066int inline_size 2071void
1067any_pending (EV_P) 2072ev_invoke (EV_P_ void *w, int revents)
2073{
2074 EV_CB_INVOKE ((W)w, revents);
2075}
2076
2077unsigned int
2078ev_pending_count (EV_P)
1068{ 2079{
1069 int pri; 2080 int pri;
2081 unsigned int count = 0;
1070 2082
1071 for (pri = NUMPRI; pri--; ) 2083 for (pri = NUMPRI; pri--; )
1072 if (pendingcnt [pri]) 2084 count += pendingcnt [pri];
1073 return 1;
1074 2085
1075 return 0; 2086 return count;
1076} 2087}
1077 2088
1078void inline_speed 2089void noinline
1079call_pending (EV_P) 2090ev_invoke_pending (EV_P)
1080{ 2091{
1081 int pri; 2092 int pri;
1082 2093
1083 for (pri = NUMPRI; pri--; ) 2094 for (pri = NUMPRI; pri--; )
1084 while (pendingcnt [pri]) 2095 while (pendingcnt [pri])
1085 { 2096 {
1086 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2097 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1087 2098
1088 if (expect_true (p->w))
1089 {
1090 assert (("non-pending watcher on pending list", p->w->pending)); 2099 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2100 /* ^ this is no longer true, as pending_w could be here */
1091 2101
1092 p->w->pending = 0; 2102 p->w->pending = 0;
1093 EV_CB_INVOKE (p->w, p->events); 2103 EV_CB_INVOKE (p->w, p->events);
1094 } 2104 EV_FREQUENT_CHECK;
1095 } 2105 }
1096} 2106}
1097 2107
1098void inline_size 2108#if EV_IDLE_ENABLE
2109/* make idle watchers pending. this handles the "call-idle */
2110/* only when higher priorities are idle" logic */
2111inline_size void
2112idle_reify (EV_P)
2113{
2114 if (expect_false (idleall))
2115 {
2116 int pri;
2117
2118 for (pri = NUMPRI; pri--; )
2119 {
2120 if (pendingcnt [pri])
2121 break;
2122
2123 if (idlecnt [pri])
2124 {
2125 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
2126 break;
2127 }
2128 }
2129 }
2130}
2131#endif
2132
2133/* make timers pending */
2134inline_size void
1099timers_reify (EV_P) 2135timers_reify (EV_P)
1100{ 2136{
2137 EV_FREQUENT_CHECK;
2138
1101 while (timercnt && ((WT)timers [0])->at <= mn_now) 2139 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1102 { 2140 {
1103 ev_timer *w = timers [0]; 2141 do
1104
1105 assert (("inactive timer on timer heap detected", ev_is_active (w)));
1106
1107 /* first reschedule or stop timer */
1108 if (w->repeat)
1109 { 2142 {
2143 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2144
2145 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2146
2147 /* first reschedule or stop timer */
2148 if (w->repeat)
2149 {
2150 ev_at (w) += w->repeat;
2151 if (ev_at (w) < mn_now)
2152 ev_at (w) = mn_now;
2153
1110 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2154 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1111 2155
1112 ((WT)w)->at += w->repeat; 2156 ANHE_at_cache (timers [HEAP0]);
1113 if (((WT)w)->at < mn_now)
1114 ((WT)w)->at = mn_now;
1115
1116 downheap ((WT *)timers, timercnt, 0); 2157 downheap (timers, timercnt, HEAP0);
2158 }
2159 else
2160 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2161
2162 EV_FREQUENT_CHECK;
2163 feed_reverse (EV_A_ (W)w);
1117 } 2164 }
1118 else 2165 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1119 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1120 2166
1121 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2167 feed_reverse_done (EV_A_ EV_TIMER);
1122 } 2168 }
1123} 2169}
1124 2170
1125#if EV_PERIODIC_ENABLE 2171#if EV_PERIODIC_ENABLE
1126void inline_size 2172/* make periodics pending */
2173inline_size void
1127periodics_reify (EV_P) 2174periodics_reify (EV_P)
1128{ 2175{
2176 EV_FREQUENT_CHECK;
2177
1129 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 2178 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1130 { 2179 {
1131 ev_periodic *w = periodics [0]; 2180 int feed_count = 0;
1132 2181
1133 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 2182 do
1134
1135 /* first reschedule or stop timer */
1136 if (w->reschedule_cb)
1137 { 2183 {
2184 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2185
2186 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2187
2188 /* first reschedule or stop timer */
2189 if (w->reschedule_cb)
2190 {
1138 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 2191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2192
1139 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 2193 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2194
2195 ANHE_at_cache (periodics [HEAP0]);
1140 downheap ((WT *)periodics, periodiccnt, 0); 2196 downheap (periodics, periodiccnt, HEAP0);
2197 }
2198 else if (w->interval)
2199 {
2200 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2201 /* if next trigger time is not sufficiently in the future, put it there */
2202 /* this might happen because of floating point inexactness */
2203 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2204 {
2205 ev_at (w) += w->interval;
2206
2207 /* if interval is unreasonably low we might still have a time in the past */
2208 /* so correct this. this will make the periodic very inexact, but the user */
2209 /* has effectively asked to get triggered more often than possible */
2210 if (ev_at (w) < ev_rt_now)
2211 ev_at (w) = ev_rt_now;
2212 }
2213
2214 ANHE_at_cache (periodics [HEAP0]);
2215 downheap (periodics, periodiccnt, HEAP0);
2216 }
2217 else
2218 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2219
2220 EV_FREQUENT_CHECK;
2221 feed_reverse (EV_A_ (W)w);
1141 } 2222 }
1142 else if (w->interval) 2223 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1143 {
1144 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1145 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1146 downheap ((WT *)periodics, periodiccnt, 0);
1147 }
1148 else
1149 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1150 2224
1151 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2225 feed_reverse_done (EV_A_ EV_PERIODIC);
1152 } 2226 }
1153} 2227}
1154 2228
2229/* simply recalculate all periodics */
2230/* TODO: maybe ensure that at least one event happens when jumping forward? */
1155static void noinline 2231static void noinline
1156periodics_reschedule (EV_P) 2232periodics_reschedule (EV_P)
1157{ 2233{
1158 int i; 2234 int i;
1159 2235
1160 /* adjust periodics after time jump */ 2236 /* adjust periodics after time jump */
1161 for (i = 0; i < periodiccnt; ++i) 2237 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1162 { 2238 {
1163 ev_periodic *w = periodics [i]; 2239 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1164 2240
1165 if (w->reschedule_cb) 2241 if (w->reschedule_cb)
1166 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2242 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1167 else if (w->interval) 2243 else if (w->interval)
1168 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2244 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2245
2246 ANHE_at_cache (periodics [i]);
2247 }
2248
2249 reheap (periodics, periodiccnt);
2250}
2251#endif
2252
2253/* adjust all timers by a given offset */
2254static void noinline
2255timers_reschedule (EV_P_ ev_tstamp adjust)
2256{
2257 int i;
2258
2259 for (i = 0; i < timercnt; ++i)
1169 } 2260 {
1170 2261 ANHE *he = timers + i + HEAP0;
1171 /* now rebuild the heap */ 2262 ANHE_w (*he)->at += adjust;
1172 for (i = periodiccnt >> 1; i--; ) 2263 ANHE_at_cache (*he);
1173 downheap ((WT *)periodics, periodiccnt, i); 2264 }
1174} 2265}
1175#endif
1176 2266
1177int inline_size 2267/* fetch new monotonic and realtime times from the kernel */
1178time_update_monotonic (EV_P) 2268/* also detect if there was a timejump, and act accordingly */
2269inline_speed void
2270time_update (EV_P_ ev_tstamp max_block)
1179{ 2271{
2272#if EV_USE_MONOTONIC
2273 if (expect_true (have_monotonic))
2274 {
2275 int i;
2276 ev_tstamp odiff = rtmn_diff;
2277
1180 mn_now = get_clock (); 2278 mn_now = get_clock ();
1181 2279
2280 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2281 /* interpolate in the meantime */
1182 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 2282 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1183 { 2283 {
1184 ev_rt_now = rtmn_diff + mn_now; 2284 ev_rt_now = rtmn_diff + mn_now;
1185 return 0; 2285 return;
1186 } 2286 }
1187 else 2287
1188 {
1189 now_floor = mn_now; 2288 now_floor = mn_now;
1190 ev_rt_now = ev_time (); 2289 ev_rt_now = ev_time ();
1191 return 1;
1192 }
1193}
1194 2290
1195void inline_size 2291 /* loop a few times, before making important decisions.
1196time_update (EV_P) 2292 * on the choice of "4": one iteration isn't enough,
1197{ 2293 * in case we get preempted during the calls to
1198 int i; 2294 * ev_time and get_clock. a second call is almost guaranteed
1199 2295 * to succeed in that case, though. and looping a few more times
1200#if EV_USE_MONOTONIC 2296 * doesn't hurt either as we only do this on time-jumps or
1201 if (expect_true (have_monotonic)) 2297 * in the unlikely event of having been preempted here.
1202 { 2298 */
1203 if (time_update_monotonic (EV_A)) 2299 for (i = 4; --i; )
1204 { 2300 {
1205 ev_tstamp odiff = rtmn_diff;
1206
1207 /* loop a few times, before making important decisions.
1208 * on the choice of "4": one iteration isn't enough,
1209 * in case we get preempted during the calls to
1210 * ev_time and get_clock. a second call is almost guarenteed
1211 * to succeed in that case, though. and looping a few more times
1212 * doesn't hurt either as we only do this on time-jumps or
1213 * in the unlikely event of getting preempted here.
1214 */
1215 for (i = 4; --i; )
1216 {
1217 rtmn_diff = ev_rt_now - mn_now; 2301 rtmn_diff = ev_rt_now - mn_now;
1218 2302
1219 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2303 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1220 return; /* all is well */ 2304 return; /* all is well */
1221 2305
1222 ev_rt_now = ev_time (); 2306 ev_rt_now = ev_time ();
1223 mn_now = get_clock (); 2307 mn_now = get_clock ();
1224 now_floor = mn_now; 2308 now_floor = mn_now;
1225 } 2309 }
1226 2310
2311 /* no timer adjustment, as the monotonic clock doesn't jump */
2312 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1227# if EV_PERIODIC_ENABLE 2313# if EV_PERIODIC_ENABLE
1228 periodics_reschedule (EV_A); 2314 periodics_reschedule (EV_A);
1229# endif 2315# endif
1230 /* no timer adjustment, as the monotonic clock doesn't jump */
1231 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1232 }
1233 } 2316 }
1234 else 2317 else
1235#endif 2318#endif
1236 { 2319 {
1237 ev_rt_now = ev_time (); 2320 ev_rt_now = ev_time ();
1238 2321
1239 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 2322 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1240 { 2323 {
2324 /* adjust timers. this is easy, as the offset is the same for all of them */
2325 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1241#if EV_PERIODIC_ENABLE 2326#if EV_PERIODIC_ENABLE
1242 periodics_reschedule (EV_A); 2327 periodics_reschedule (EV_A);
1243#endif 2328#endif
1244
1245 /* adjust timers. this is easy, as the offset is the same for all */
1246 for (i = 0; i < timercnt; ++i)
1247 ((WT)timers [i])->at += ev_rt_now - mn_now;
1248 } 2329 }
1249 2330
1250 mn_now = ev_rt_now; 2331 mn_now = ev_rt_now;
1251 } 2332 }
1252} 2333}
1253 2334
1254void 2335void
1255ev_ref (EV_P)
1256{
1257 ++activecnt;
1258}
1259
1260void
1261ev_unref (EV_P)
1262{
1263 --activecnt;
1264}
1265
1266static int loop_done;
1267
1268void
1269ev_loop (EV_P_ int flags) 2336ev_run (EV_P_ int flags)
1270{ 2337{
1271 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2338#if EV_FEATURE_API
1272 ? EVUNLOOP_ONE 2339 ++loop_depth;
1273 : EVUNLOOP_CANCEL; 2340#endif
1274 2341
1275 while (activecnt) 2342 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2343
2344 loop_done = EVBREAK_CANCEL;
2345
2346 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2347
2348 do
1276 { 2349 {
2350#if EV_VERIFY >= 2
2351 ev_verify (EV_A);
2352#endif
2353
2354#ifndef _WIN32
2355 if (expect_false (curpid)) /* penalise the forking check even more */
2356 if (expect_false (getpid () != curpid))
2357 {
2358 curpid = getpid ();
2359 postfork = 1;
2360 }
2361#endif
2362
2363#if EV_FORK_ENABLE
2364 /* we might have forked, so queue fork handlers */
2365 if (expect_false (postfork))
2366 if (forkcnt)
2367 {
2368 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2369 EV_INVOKE_PENDING;
2370 }
2371#endif
2372
2373#if EV_PREPARE_ENABLE
1277 /* queue check watchers (and execute them) */ 2374 /* queue prepare watchers (and execute them) */
1278 if (expect_false (preparecnt)) 2375 if (expect_false (preparecnt))
1279 { 2376 {
1280 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2377 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1281 call_pending (EV_A); 2378 EV_INVOKE_PENDING;
1282 } 2379 }
2380#endif
2381
2382 if (expect_false (loop_done))
2383 break;
1283 2384
1284 /* we might have forked, so reify kernel state if necessary */ 2385 /* we might have forked, so reify kernel state if necessary */
1285 if (expect_false (postfork)) 2386 if (expect_false (postfork))
1286 loop_fork (EV_A); 2387 loop_fork (EV_A);
1287 2388
1288 /* update fd-related kernel structures */ 2389 /* update fd-related kernel structures */
1289 fd_reify (EV_A); 2390 fd_reify (EV_A);
1290 2391
1291 /* calculate blocking time */ 2392 /* calculate blocking time */
1292 { 2393 {
1293 double block; 2394 ev_tstamp waittime = 0.;
2395 ev_tstamp sleeptime = 0.;
1294 2396
1295 if (flags & EVLOOP_NONBLOCK || idlecnt) 2397 /* remember old timestamp for io_blocktime calculation */
1296 block = 0.; /* do not block at all */ 2398 ev_tstamp prev_mn_now = mn_now;
1297 else 2399
2400 /* update time to cancel out callback processing overhead */
2401 time_update (EV_A_ 1e100);
2402
2403 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1298 { 2404 {
1299 /* update time to cancel out callback processing overhead */
1300#if EV_USE_MONOTONIC
1301 if (expect_true (have_monotonic))
1302 time_update_monotonic (EV_A);
1303 else
1304#endif
1305 {
1306 ev_rt_now = ev_time ();
1307 mn_now = ev_rt_now;
1308 }
1309
1310 block = MAX_BLOCKTIME; 2405 waittime = MAX_BLOCKTIME;
1311 2406
1312 if (timercnt) 2407 if (timercnt)
1313 { 2408 {
1314 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2409 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1315 if (block > to) block = to; 2410 if (waittime > to) waittime = to;
1316 } 2411 }
1317 2412
1318#if EV_PERIODIC_ENABLE 2413#if EV_PERIODIC_ENABLE
1319 if (periodiccnt) 2414 if (periodiccnt)
1320 { 2415 {
1321 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2416 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1322 if (block > to) block = to; 2417 if (waittime > to) waittime = to;
1323 } 2418 }
1324#endif 2419#endif
1325 2420
2421 /* don't let timeouts decrease the waittime below timeout_blocktime */
2422 if (expect_false (waittime < timeout_blocktime))
2423 waittime = timeout_blocktime;
2424
2425 /* extra check because io_blocktime is commonly 0 */
1326 if (expect_false (block < 0.)) block = 0.; 2426 if (expect_false (io_blocktime))
2427 {
2428 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2429
2430 if (sleeptime > waittime - backend_fudge)
2431 sleeptime = waittime - backend_fudge;
2432
2433 if (expect_true (sleeptime > 0.))
2434 {
2435 ev_sleep (sleeptime);
2436 waittime -= sleeptime;
2437 }
2438 }
1327 } 2439 }
1328 2440
2441#if EV_FEATURE_API
2442 ++loop_count;
2443#endif
2444 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1329 backend_poll (EV_A_ block); 2445 backend_poll (EV_A_ waittime);
2446 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2447
2448 /* update ev_rt_now, do magic */
2449 time_update (EV_A_ waittime + sleeptime);
1330 } 2450 }
1331
1332 /* update ev_rt_now, do magic */
1333 time_update (EV_A);
1334 2451
1335 /* queue pending timers and reschedule them */ 2452 /* queue pending timers and reschedule them */
1336 timers_reify (EV_A); /* relative timers called last */ 2453 timers_reify (EV_A); /* relative timers called last */
1337#if EV_PERIODIC_ENABLE 2454#if EV_PERIODIC_ENABLE
1338 periodics_reify (EV_A); /* absolute timers called first */ 2455 periodics_reify (EV_A); /* absolute timers called first */
1339#endif 2456#endif
1340 2457
2458#if EV_IDLE_ENABLE
1341 /* queue idle watchers unless other events are pending */ 2459 /* queue idle watchers unless other events are pending */
1342 if (idlecnt && !any_pending (EV_A)) 2460 idle_reify (EV_A);
1343 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2461#endif
1344 2462
2463#if EV_CHECK_ENABLE
1345 /* queue check watchers, to be executed first */ 2464 /* queue check watchers, to be executed first */
1346 if (expect_false (checkcnt)) 2465 if (expect_false (checkcnt))
1347 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2466 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2467#endif
1348 2468
1349 call_pending (EV_A); 2469 EV_INVOKE_PENDING;
1350
1351 if (expect_false (loop_done))
1352 break;
1353 } 2470 }
2471 while (expect_true (
2472 activecnt
2473 && !loop_done
2474 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2475 ));
1354 2476
1355 if (loop_done == EVUNLOOP_ONE) 2477 if (loop_done == EVBREAK_ONE)
1356 loop_done = EVUNLOOP_CANCEL; 2478 loop_done = EVBREAK_CANCEL;
1357}
1358 2479
2480#if EV_FEATURE_API
2481 --loop_depth;
2482#endif
2483}
2484
1359void 2485void
1360ev_unloop (EV_P_ int how) 2486ev_break (EV_P_ int how)
1361{ 2487{
1362 loop_done = how; 2488 loop_done = how;
1363} 2489}
1364 2490
2491void
2492ev_ref (EV_P)
2493{
2494 ++activecnt;
2495}
2496
2497void
2498ev_unref (EV_P)
2499{
2500 --activecnt;
2501}
2502
2503void
2504ev_now_update (EV_P)
2505{
2506 time_update (EV_A_ 1e100);
2507}
2508
2509void
2510ev_suspend (EV_P)
2511{
2512 ev_now_update (EV_A);
2513}
2514
2515void
2516ev_resume (EV_P)
2517{
2518 ev_tstamp mn_prev = mn_now;
2519
2520 ev_now_update (EV_A);
2521 timers_reschedule (EV_A_ mn_now - mn_prev);
2522#if EV_PERIODIC_ENABLE
2523 /* TODO: really do this? */
2524 periodics_reschedule (EV_A);
2525#endif
2526}
2527
1365/*****************************************************************************/ 2528/*****************************************************************************/
2529/* singly-linked list management, used when the expected list length is short */
1366 2530
1367void inline_size 2531inline_size void
1368wlist_add (WL *head, WL elem) 2532wlist_add (WL *head, WL elem)
1369{ 2533{
1370 elem->next = *head; 2534 elem->next = *head;
1371 *head = elem; 2535 *head = elem;
1372} 2536}
1373 2537
1374void inline_size 2538inline_size void
1375wlist_del (WL *head, WL elem) 2539wlist_del (WL *head, WL elem)
1376{ 2540{
1377 while (*head) 2541 while (*head)
1378 { 2542 {
1379 if (*head == elem) 2543 if (expect_true (*head == elem))
1380 { 2544 {
1381 *head = elem->next; 2545 *head = elem->next;
1382 return; 2546 break;
1383 } 2547 }
1384 2548
1385 head = &(*head)->next; 2549 head = &(*head)->next;
1386 } 2550 }
1387} 2551}
1388 2552
1389void inline_speed 2553/* internal, faster, version of ev_clear_pending */
2554inline_speed void
1390ev_clear_pending (EV_P_ W w) 2555clear_pending (EV_P_ W w)
1391{ 2556{
1392 if (w->pending) 2557 if (w->pending)
1393 { 2558 {
1394 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2559 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1395 w->pending = 0; 2560 w->pending = 0;
1396 } 2561 }
1397} 2562}
1398 2563
1399void inline_speed 2564int
2565ev_clear_pending (EV_P_ void *w)
2566{
2567 W w_ = (W)w;
2568 int pending = w_->pending;
2569
2570 if (expect_true (pending))
2571 {
2572 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2573 p->w = (W)&pending_w;
2574 w_->pending = 0;
2575 return p->events;
2576 }
2577 else
2578 return 0;
2579}
2580
2581inline_size void
2582pri_adjust (EV_P_ W w)
2583{
2584 int pri = ev_priority (w);
2585 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2586 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2587 ev_set_priority (w, pri);
2588}
2589
2590inline_speed void
1400ev_start (EV_P_ W w, int active) 2591ev_start (EV_P_ W w, int active)
1401{ 2592{
1402 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2593 pri_adjust (EV_A_ w);
1403 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1404
1405 w->active = active; 2594 w->active = active;
1406 ev_ref (EV_A); 2595 ev_ref (EV_A);
1407} 2596}
1408 2597
1409void inline_size 2598inline_size void
1410ev_stop (EV_P_ W w) 2599ev_stop (EV_P_ W w)
1411{ 2600{
1412 ev_unref (EV_A); 2601 ev_unref (EV_A);
1413 w->active = 0; 2602 w->active = 0;
1414} 2603}
1415 2604
1416/*****************************************************************************/ 2605/*****************************************************************************/
1417 2606
1418void 2607void noinline
1419ev_io_start (EV_P_ ev_io *w) 2608ev_io_start (EV_P_ ev_io *w)
1420{ 2609{
1421 int fd = w->fd; 2610 int fd = w->fd;
1422 2611
1423 if (expect_false (ev_is_active (w))) 2612 if (expect_false (ev_is_active (w)))
1424 return; 2613 return;
1425 2614
1426 assert (("ev_io_start called with negative fd", fd >= 0)); 2615 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2616 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2617
2618 EV_FREQUENT_CHECK;
1427 2619
1428 ev_start (EV_A_ (W)w, 1); 2620 ev_start (EV_A_ (W)w, 1);
1429 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2621 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1430 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2622 wlist_add (&anfds[fd].head, (WL)w);
1431 2623
1432 fd_change (EV_A_ fd); 2624 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1433} 2625 w->events &= ~EV__IOFDSET;
1434 2626
1435void 2627 EV_FREQUENT_CHECK;
2628}
2629
2630void noinline
1436ev_io_stop (EV_P_ ev_io *w) 2631ev_io_stop (EV_P_ ev_io *w)
1437{ 2632{
1438 ev_clear_pending (EV_A_ (W)w); 2633 clear_pending (EV_A_ (W)w);
1439 if (expect_false (!ev_is_active (w))) 2634 if (expect_false (!ev_is_active (w)))
1440 return; 2635 return;
1441 2636
1442 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2637 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1443 2638
2639 EV_FREQUENT_CHECK;
2640
1444 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2641 wlist_del (&anfds[w->fd].head, (WL)w);
1445 ev_stop (EV_A_ (W)w); 2642 ev_stop (EV_A_ (W)w);
1446 2643
1447 fd_change (EV_A_ w->fd); 2644 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
1448}
1449 2645
1450void 2646 EV_FREQUENT_CHECK;
2647}
2648
2649void noinline
1451ev_timer_start (EV_P_ ev_timer *w) 2650ev_timer_start (EV_P_ ev_timer *w)
1452{ 2651{
1453 if (expect_false (ev_is_active (w))) 2652 if (expect_false (ev_is_active (w)))
1454 return; 2653 return;
1455 2654
1456 ((WT)w)->at += mn_now; 2655 ev_at (w) += mn_now;
1457 2656
1458 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2657 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1459 2658
2659 EV_FREQUENT_CHECK;
2660
2661 ++timercnt;
1460 ev_start (EV_A_ (W)w, ++timercnt); 2662 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1461 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2663 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1462 timers [timercnt - 1] = w; 2664 ANHE_w (timers [ev_active (w)]) = (WT)w;
1463 upheap ((WT *)timers, timercnt - 1); 2665 ANHE_at_cache (timers [ev_active (w)]);
2666 upheap (timers, ev_active (w));
1464 2667
2668 EV_FREQUENT_CHECK;
2669
1465 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2670 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1466} 2671}
1467 2672
1468void 2673void noinline
1469ev_timer_stop (EV_P_ ev_timer *w) 2674ev_timer_stop (EV_P_ ev_timer *w)
1470{ 2675{
1471 ev_clear_pending (EV_A_ (W)w); 2676 clear_pending (EV_A_ (W)w);
1472 if (expect_false (!ev_is_active (w))) 2677 if (expect_false (!ev_is_active (w)))
1473 return; 2678 return;
1474 2679
2680 EV_FREQUENT_CHECK;
2681
2682 {
2683 int active = ev_active (w);
2684
1475 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2685 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1476 2686
2687 --timercnt;
2688
1477 if (expect_true (((W)w)->active < timercnt--)) 2689 if (expect_true (active < timercnt + HEAP0))
1478 { 2690 {
1479 timers [((W)w)->active - 1] = timers [timercnt]; 2691 timers [active] = timers [timercnt + HEAP0];
1480 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2692 adjustheap (timers, timercnt, active);
1481 } 2693 }
2694 }
1482 2695
1483 ((WT)w)->at -= mn_now; 2696 ev_at (w) -= mn_now;
1484 2697
1485 ev_stop (EV_A_ (W)w); 2698 ev_stop (EV_A_ (W)w);
1486}
1487 2699
1488void 2700 EV_FREQUENT_CHECK;
2701}
2702
2703void noinline
1489ev_timer_again (EV_P_ ev_timer *w) 2704ev_timer_again (EV_P_ ev_timer *w)
1490{ 2705{
2706 EV_FREQUENT_CHECK;
2707
1491 if (ev_is_active (w)) 2708 if (ev_is_active (w))
1492 { 2709 {
1493 if (w->repeat) 2710 if (w->repeat)
1494 { 2711 {
1495 ((WT)w)->at = mn_now + w->repeat; 2712 ev_at (w) = mn_now + w->repeat;
2713 ANHE_at_cache (timers [ev_active (w)]);
1496 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2714 adjustheap (timers, timercnt, ev_active (w));
1497 } 2715 }
1498 else 2716 else
1499 ev_timer_stop (EV_A_ w); 2717 ev_timer_stop (EV_A_ w);
1500 } 2718 }
1501 else if (w->repeat) 2719 else if (w->repeat)
1502 { 2720 {
1503 w->at = w->repeat; 2721 ev_at (w) = w->repeat;
1504 ev_timer_start (EV_A_ w); 2722 ev_timer_start (EV_A_ w);
1505 } 2723 }
2724
2725 EV_FREQUENT_CHECK;
2726}
2727
2728ev_tstamp
2729ev_timer_remaining (EV_P_ ev_timer *w)
2730{
2731 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1506} 2732}
1507 2733
1508#if EV_PERIODIC_ENABLE 2734#if EV_PERIODIC_ENABLE
1509void 2735void noinline
1510ev_periodic_start (EV_P_ ev_periodic *w) 2736ev_periodic_start (EV_P_ ev_periodic *w)
1511{ 2737{
1512 if (expect_false (ev_is_active (w))) 2738 if (expect_false (ev_is_active (w)))
1513 return; 2739 return;
1514 2740
1515 if (w->reschedule_cb) 2741 if (w->reschedule_cb)
1516 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2742 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1517 else if (w->interval) 2743 else if (w->interval)
1518 { 2744 {
1519 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2745 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1520 /* this formula differs from the one in periodic_reify because we do not always round up */ 2746 /* this formula differs from the one in periodic_reify because we do not always round up */
1521 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2747 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1522 } 2748 }
2749 else
2750 ev_at (w) = w->offset;
1523 2751
2752 EV_FREQUENT_CHECK;
2753
2754 ++periodiccnt;
1524 ev_start (EV_A_ (W)w, ++periodiccnt); 2755 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1525 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2756 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1526 periodics [periodiccnt - 1] = w; 2757 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1527 upheap ((WT *)periodics, periodiccnt - 1); 2758 ANHE_at_cache (periodics [ev_active (w)]);
2759 upheap (periodics, ev_active (w));
1528 2760
2761 EV_FREQUENT_CHECK;
2762
1529 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2763 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1530} 2764}
1531 2765
1532void 2766void noinline
1533ev_periodic_stop (EV_P_ ev_periodic *w) 2767ev_periodic_stop (EV_P_ ev_periodic *w)
1534{ 2768{
1535 ev_clear_pending (EV_A_ (W)w); 2769 clear_pending (EV_A_ (W)w);
1536 if (expect_false (!ev_is_active (w))) 2770 if (expect_false (!ev_is_active (w)))
1537 return; 2771 return;
1538 2772
2773 EV_FREQUENT_CHECK;
2774
2775 {
2776 int active = ev_active (w);
2777
1539 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2778 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1540 2779
2780 --periodiccnt;
2781
1541 if (expect_true (((W)w)->active < periodiccnt--)) 2782 if (expect_true (active < periodiccnt + HEAP0))
1542 { 2783 {
1543 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2784 periodics [active] = periodics [periodiccnt + HEAP0];
1544 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2785 adjustheap (periodics, periodiccnt, active);
1545 } 2786 }
2787 }
1546 2788
1547 ev_stop (EV_A_ (W)w); 2789 ev_stop (EV_A_ (W)w);
1548}
1549 2790
1550void 2791 EV_FREQUENT_CHECK;
2792}
2793
2794void noinline
1551ev_periodic_again (EV_P_ ev_periodic *w) 2795ev_periodic_again (EV_P_ ev_periodic *w)
1552{ 2796{
1553 /* TODO: use adjustheap and recalculation */ 2797 /* TODO: use adjustheap and recalculation */
1554 ev_periodic_stop (EV_A_ w); 2798 ev_periodic_stop (EV_A_ w);
1555 ev_periodic_start (EV_A_ w); 2799 ev_periodic_start (EV_A_ w);
1556} 2800}
1557#endif 2801#endif
1558 2802
1559void 2803#ifndef SA_RESTART
2804# define SA_RESTART 0
2805#endif
2806
2807#if EV_SIGNAL_ENABLE
2808
2809void noinline
1560ev_idle_start (EV_P_ ev_idle *w) 2810ev_signal_start (EV_P_ ev_signal *w)
1561{ 2811{
1562 if (expect_false (ev_is_active (w))) 2812 if (expect_false (ev_is_active (w)))
1563 return; 2813 return;
1564 2814
2815 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2816
2817#if EV_MULTIPLICITY
2818 assert (("libev: a signal must not be attached to two different loops",
2819 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2820
2821 signals [w->signum - 1].loop = EV_A;
2822#endif
2823
2824 EV_FREQUENT_CHECK;
2825
2826#if EV_USE_SIGNALFD
2827 if (sigfd == -2)
2828 {
2829 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2830 if (sigfd < 0 && errno == EINVAL)
2831 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2832
2833 if (sigfd >= 0)
2834 {
2835 fd_intern (sigfd); /* doing it twice will not hurt */
2836
2837 sigemptyset (&sigfd_set);
2838
2839 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2840 ev_set_priority (&sigfd_w, EV_MAXPRI);
2841 ev_io_start (EV_A_ &sigfd_w);
2842 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2843 }
2844 }
2845
2846 if (sigfd >= 0)
2847 {
2848 /* TODO: check .head */
2849 sigaddset (&sigfd_set, w->signum);
2850 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2851
2852 signalfd (sigfd, &sigfd_set, 0);
2853 }
2854#endif
2855
1565 ev_start (EV_A_ (W)w, ++idlecnt); 2856 ev_start (EV_A_ (W)w, 1);
1566 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2857 wlist_add (&signals [w->signum - 1].head, (WL)w);
1567 idles [idlecnt - 1] = w;
1568}
1569 2858
1570void 2859 if (!((WL)w)->next)
2860# if EV_USE_SIGNALFD
2861 if (sigfd < 0) /*TODO*/
2862# endif
2863 {
2864# ifdef _WIN32
2865 evpipe_init (EV_A);
2866
2867 signal (w->signum, ev_sighandler);
2868# else
2869 struct sigaction sa;
2870
2871 evpipe_init (EV_A);
2872
2873 sa.sa_handler = ev_sighandler;
2874 sigfillset (&sa.sa_mask);
2875 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2876 sigaction (w->signum, &sa, 0);
2877
2878 sigemptyset (&sa.sa_mask);
2879 sigaddset (&sa.sa_mask, w->signum);
2880 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2881#endif
2882 }
2883
2884 EV_FREQUENT_CHECK;
2885}
2886
2887void noinline
1571ev_idle_stop (EV_P_ ev_idle *w) 2888ev_signal_stop (EV_P_ ev_signal *w)
1572{ 2889{
1573 ev_clear_pending (EV_A_ (W)w); 2890 clear_pending (EV_A_ (W)w);
1574 if (expect_false (!ev_is_active (w))) 2891 if (expect_false (!ev_is_active (w)))
1575 return; 2892 return;
1576 2893
1577 { 2894 EV_FREQUENT_CHECK;
1578 int active = ((W)w)->active;
1579 idles [active - 1] = idles [--idlecnt];
1580 ((W)idles [active - 1])->active = active;
1581 }
1582 2895
2896 wlist_del (&signals [w->signum - 1].head, (WL)w);
1583 ev_stop (EV_A_ (W)w); 2897 ev_stop (EV_A_ (W)w);
1584}
1585 2898
2899 if (!signals [w->signum - 1].head)
2900 {
2901#if EV_MULTIPLICITY
2902 signals [w->signum - 1].loop = 0; /* unattach from signal */
2903#endif
2904#if EV_USE_SIGNALFD
2905 if (sigfd >= 0)
2906 {
2907 sigset_t ss;
2908
2909 sigemptyset (&ss);
2910 sigaddset (&ss, w->signum);
2911 sigdelset (&sigfd_set, w->signum);
2912
2913 signalfd (sigfd, &sigfd_set, 0);
2914 sigprocmask (SIG_UNBLOCK, &ss, 0);
2915 }
2916 else
2917#endif
2918 signal (w->signum, SIG_DFL);
2919 }
2920
2921 EV_FREQUENT_CHECK;
2922}
2923
2924#endif
2925
2926#if EV_CHILD_ENABLE
2927
1586void 2928void
1587ev_prepare_start (EV_P_ ev_prepare *w) 2929ev_child_start (EV_P_ ev_child *w)
1588{ 2930{
2931#if EV_MULTIPLICITY
2932 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2933#endif
1589 if (expect_false (ev_is_active (w))) 2934 if (expect_false (ev_is_active (w)))
1590 return; 2935 return;
1591 2936
2937 EV_FREQUENT_CHECK;
2938
1592 ev_start (EV_A_ (W)w, ++preparecnt); 2939 ev_start (EV_A_ (W)w, 1);
1593 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2940 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1594 prepares [preparecnt - 1] = w;
1595}
1596 2941
2942 EV_FREQUENT_CHECK;
2943}
2944
1597void 2945void
1598ev_prepare_stop (EV_P_ ev_prepare *w) 2946ev_child_stop (EV_P_ ev_child *w)
1599{ 2947{
1600 ev_clear_pending (EV_A_ (W)w); 2948 clear_pending (EV_A_ (W)w);
1601 if (expect_false (!ev_is_active (w))) 2949 if (expect_false (!ev_is_active (w)))
1602 return; 2950 return;
1603 2951
1604 { 2952 EV_FREQUENT_CHECK;
1605 int active = ((W)w)->active;
1606 prepares [active - 1] = prepares [--preparecnt];
1607 ((W)prepares [active - 1])->active = active;
1608 }
1609 2953
2954 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1610 ev_stop (EV_A_ (W)w); 2955 ev_stop (EV_A_ (W)w);
1611}
1612 2956
1613void 2957 EV_FREQUENT_CHECK;
1614ev_check_start (EV_P_ ev_check *w) 2958}
2959
2960#endif
2961
2962#if EV_STAT_ENABLE
2963
2964# ifdef _WIN32
2965# undef lstat
2966# define lstat(a,b) _stati64 (a,b)
2967# endif
2968
2969#define DEF_STAT_INTERVAL 5.0074891
2970#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2971#define MIN_STAT_INTERVAL 0.1074891
2972
2973static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2974
2975#if EV_USE_INOTIFY
2976
2977/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2978# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2979
2980static void noinline
2981infy_add (EV_P_ ev_stat *w)
1615{ 2982{
1616 if (expect_false (ev_is_active (w))) 2983 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);
2984
2985 if (w->wd >= 0)
2986 {
2987 struct statfs sfs;
2988
2989 /* now local changes will be tracked by inotify, but remote changes won't */
2990 /* unless the filesystem is known to be local, we therefore still poll */
2991 /* also do poll on <2.6.25, but with normal frequency */
2992
2993 if (!fs_2625)
2994 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2995 else if (!statfs (w->path, &sfs)
2996 && (sfs.f_type == 0x1373 /* devfs */
2997 || sfs.f_type == 0xEF53 /* ext2/3 */
2998 || sfs.f_type == 0x3153464a /* jfs */
2999 || sfs.f_type == 0x52654973 /* reiser3 */
3000 || sfs.f_type == 0x01021994 /* tempfs */
3001 || sfs.f_type == 0x58465342 /* xfs */))
3002 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3003 else
3004 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3005 }
3006 else
3007 {
3008 /* can't use inotify, continue to stat */
3009 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3010
3011 /* if path is not there, monitor some parent directory for speedup hints */
3012 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3013 /* but an efficiency issue only */
3014 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
3015 {
3016 char path [4096];
3017 strcpy (path, w->path);
3018
3019 do
3020 {
3021 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
3022 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
3023
3024 char *pend = strrchr (path, '/');
3025
3026 if (!pend || pend == path)
3027 break;
3028
3029 *pend = 0;
3030 w->wd = inotify_add_watch (fs_fd, path, mask);
3031 }
3032 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3033 }
3034 }
3035
3036 if (w->wd >= 0)
3037 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3038
3039 /* now re-arm timer, if required */
3040 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3041 ev_timer_again (EV_A_ &w->timer);
3042 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3043}
3044
3045static void noinline
3046infy_del (EV_P_ ev_stat *w)
3047{
3048 int slot;
3049 int wd = w->wd;
3050
3051 if (wd < 0)
1617 return; 3052 return;
1618 3053
1619 ev_start (EV_A_ (W)w, ++checkcnt); 3054 w->wd = -2;
1620 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3055 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
1621 checks [checkcnt - 1] = w; 3056 wlist_del (&fs_hash [slot].head, (WL)w);
1622}
1623 3057
1624void 3058 /* remove this watcher, if others are watching it, they will rearm */
1625ev_check_stop (EV_P_ ev_check *w) 3059 inotify_rm_watch (fs_fd, wd);
3060}
3061
3062static void noinline
3063infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1626{ 3064{
1627 ev_clear_pending (EV_A_ (W)w); 3065 if (slot < 0)
1628 if (expect_false (!ev_is_active (w))) 3066 /* overflow, need to check for all hash slots */
3067 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3068 infy_wd (EV_A_ slot, wd, ev);
3069 else
3070 {
3071 WL w_;
3072
3073 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
3074 {
3075 ev_stat *w = (ev_stat *)w_;
3076 w_ = w_->next; /* lets us remove this watcher and all before it */
3077
3078 if (w->wd == wd || wd == -1)
3079 {
3080 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
3081 {
3082 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3083 w->wd = -1;
3084 infy_add (EV_A_ w); /* re-add, no matter what */
3085 }
3086
3087 stat_timer_cb (EV_A_ &w->timer, 0);
3088 }
3089 }
3090 }
3091}
3092
3093static void
3094infy_cb (EV_P_ ev_io *w, int revents)
3095{
3096 char buf [EV_INOTIFY_BUFSIZE];
3097 int ofs;
3098 int len = read (fs_fd, buf, sizeof (buf));
3099
3100 for (ofs = 0; ofs < len; )
3101 {
3102 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
3103 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3104 ofs += sizeof (struct inotify_event) + ev->len;
3105 }
3106}
3107
3108inline_size void
3109ev_check_2625 (EV_P)
3110{
3111 /* kernels < 2.6.25 are borked
3112 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3113 */
3114 if (ev_linux_version () < 0x020619)
1629 return; 3115 return;
1630 3116
1631 { 3117 fs_2625 = 1;
1632 int active = ((W)w)->active;
1633 checks [active - 1] = checks [--checkcnt];
1634 ((W)checks [active - 1])->active = active;
1635 }
1636
1637 ev_stop (EV_A_ (W)w);
1638} 3118}
1639 3119
1640#ifndef SA_RESTART 3120inline_size int
1641# define SA_RESTART 0 3121infy_newfd (void)
1642#endif
1643
1644void
1645ev_signal_start (EV_P_ ev_signal *w)
1646{ 3122{
1647#if EV_MULTIPLICITY 3123#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
1648 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3124 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3125 if (fd >= 0)
3126 return fd;
1649#endif 3127#endif
1650 if (expect_false (ev_is_active (w))) 3128 return inotify_init ();
3129}
3130
3131inline_size void
3132infy_init (EV_P)
3133{
3134 if (fs_fd != -2)
1651 return; 3135 return;
1652 3136
1653 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3137 fs_fd = -1;
1654 3138
1655 ev_start (EV_A_ (W)w, 1); 3139 ev_check_2625 (EV_A);
1656 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1657 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1658 3140
1659 if (!((WL)w)->next) 3141 fs_fd = infy_newfd ();
3142
3143 if (fs_fd >= 0)
3144 {
3145 fd_intern (fs_fd);
3146 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3147 ev_set_priority (&fs_w, EV_MAXPRI);
3148 ev_io_start (EV_A_ &fs_w);
3149 ev_unref (EV_A);
1660 { 3150 }
3151}
3152
3153inline_size void
3154infy_fork (EV_P)
3155{
3156 int slot;
3157
3158 if (fs_fd < 0)
3159 return;
3160
3161 ev_ref (EV_A);
3162 ev_io_stop (EV_A_ &fs_w);
3163 close (fs_fd);
3164 fs_fd = infy_newfd ();
3165
3166 if (fs_fd >= 0)
3167 {
3168 fd_intern (fs_fd);
3169 ev_io_set (&fs_w, fs_fd, EV_READ);
3170 ev_io_start (EV_A_ &fs_w);
3171 ev_unref (EV_A);
3172 }
3173
3174 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3175 {
3176 WL w_ = fs_hash [slot].head;
3177 fs_hash [slot].head = 0;
3178
3179 while (w_)
3180 {
3181 ev_stat *w = (ev_stat *)w_;
3182 w_ = w_->next; /* lets us add this watcher */
3183
3184 w->wd = -1;
3185
3186 if (fs_fd >= 0)
3187 infy_add (EV_A_ w); /* re-add, no matter what */
3188 else
3189 {
3190 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3191 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3192 ev_timer_again (EV_A_ &w->timer);
3193 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3194 }
3195 }
3196 }
3197}
3198
3199#endif
3200
1661#if _WIN32 3201#ifdef _WIN32
1662 signal (w->signum, sighandler); 3202# define EV_LSTAT(p,b) _stati64 (p, b)
1663#else 3203#else
1664 struct sigaction sa; 3204# define EV_LSTAT(p,b) lstat (p, b)
1665 sa.sa_handler = sighandler;
1666 sigfillset (&sa.sa_mask);
1667 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1668 sigaction (w->signum, &sa, 0);
1669#endif
1670 }
1671}
1672
1673void
1674ev_signal_stop (EV_P_ ev_signal *w)
1675{
1676 ev_clear_pending (EV_A_ (W)w);
1677 if (expect_false (!ev_is_active (w)))
1678 return;
1679
1680 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1681 ev_stop (EV_A_ (W)w);
1682
1683 if (!signals [w->signum - 1].head)
1684 signal (w->signum, SIG_DFL);
1685}
1686
1687void
1688ev_child_start (EV_P_ ev_child *w)
1689{
1690#if EV_MULTIPLICITY
1691 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1692#endif
1693 if (expect_false (ev_is_active (w)))
1694 return;
1695
1696 ev_start (EV_A_ (W)w, 1);
1697 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1698}
1699
1700void
1701ev_child_stop (EV_P_ ev_child *w)
1702{
1703 ev_clear_pending (EV_A_ (W)w);
1704 if (expect_false (!ev_is_active (w)))
1705 return;
1706
1707 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1708 ev_stop (EV_A_ (W)w);
1709}
1710
1711#if EV_EMBED_ENABLE
1712void noinline
1713ev_embed_sweep (EV_P_ ev_embed *w)
1714{
1715 ev_loop (w->loop, EVLOOP_NONBLOCK);
1716}
1717
1718static void
1719embed_cb (EV_P_ ev_io *io, int revents)
1720{
1721 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1722
1723 if (ev_cb (w))
1724 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1725 else
1726 ev_embed_sweep (loop, w);
1727}
1728
1729void
1730ev_embed_start (EV_P_ ev_embed *w)
1731{
1732 if (expect_false (ev_is_active (w)))
1733 return;
1734
1735 {
1736 struct ev_loop *loop = w->loop;
1737 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1738 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1739 }
1740
1741 ev_set_priority (&w->io, ev_priority (w));
1742 ev_io_start (EV_A_ &w->io);
1743
1744 ev_start (EV_A_ (W)w, 1);
1745}
1746
1747void
1748ev_embed_stop (EV_P_ ev_embed *w)
1749{
1750 ev_clear_pending (EV_A_ (W)w);
1751 if (expect_false (!ev_is_active (w)))
1752 return;
1753
1754 ev_io_stop (EV_A_ &w->io);
1755
1756 ev_stop (EV_A_ (W)w);
1757}
1758#endif
1759
1760#if EV_STAT_ENABLE
1761
1762# ifdef _WIN32
1763# define lstat(a,b) stat(a,b)
1764# endif 3205#endif
1765 3206
1766void 3207void
1767ev_stat_stat (EV_P_ ev_stat *w) 3208ev_stat_stat (EV_P_ ev_stat *w)
1768{ 3209{
1769 if (lstat (w->path, &w->attr) < 0) 3210 if (lstat (w->path, &w->attr) < 0)
1770 w->attr.st_nlink = 0; 3211 w->attr.st_nlink = 0;
1771 else if (!w->attr.st_nlink) 3212 else if (!w->attr.st_nlink)
1772 w->attr.st_nlink = 1; 3213 w->attr.st_nlink = 1;
1773} 3214}
1774 3215
1775static void 3216static void noinline
1776stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3217stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1777{ 3218{
1778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3219 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1779 3220
1780 /* we copy this here each the time so that */ 3221 ev_statdata prev = w->attr;
1781 /* prev has the old value when the callback gets invoked */
1782 w->prev = w->attr;
1783 ev_stat_stat (EV_A_ w); 3222 ev_stat_stat (EV_A_ w);
1784 3223
1785 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 3224 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3225 if (
3226 prev.st_dev != w->attr.st_dev
3227 || prev.st_ino != w->attr.st_ino
3228 || prev.st_mode != w->attr.st_mode
3229 || prev.st_nlink != w->attr.st_nlink
3230 || prev.st_uid != w->attr.st_uid
3231 || prev.st_gid != w->attr.st_gid
3232 || prev.st_rdev != w->attr.st_rdev
3233 || prev.st_size != w->attr.st_size
3234 || prev.st_atime != w->attr.st_atime
3235 || prev.st_mtime != w->attr.st_mtime
3236 || prev.st_ctime != w->attr.st_ctime
3237 ) {
3238 /* we only update w->prev on actual differences */
3239 /* in case we test more often than invoke the callback, */
3240 /* to ensure that prev is always different to attr */
3241 w->prev = prev;
3242
3243 #if EV_USE_INOTIFY
3244 if (fs_fd >= 0)
3245 {
3246 infy_del (EV_A_ w);
3247 infy_add (EV_A_ w);
3248 ev_stat_stat (EV_A_ w); /* avoid race... */
3249 }
3250 #endif
3251
1786 ev_feed_event (EV_A_ w, EV_STAT); 3252 ev_feed_event (EV_A_ w, EV_STAT);
3253 }
1787} 3254}
1788 3255
1789void 3256void
1790ev_stat_start (EV_P_ ev_stat *w) 3257ev_stat_start (EV_P_ ev_stat *w)
1791{ 3258{
1792 if (expect_false (ev_is_active (w))) 3259 if (expect_false (ev_is_active (w)))
1793 return; 3260 return;
1794 3261
1795 /* since we use memcmp, we need to clear any padding data etc. */
1796 memset (&w->prev, 0, sizeof (ev_statdata));
1797 memset (&w->attr, 0, sizeof (ev_statdata));
1798
1799 ev_stat_stat (EV_A_ w); 3262 ev_stat_stat (EV_A_ w);
1800 3263
3264 if (w->interval < MIN_STAT_INTERVAL && w->interval)
3265 w->interval = MIN_STAT_INTERVAL;
3266
1801 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3267 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
1802 ev_set_priority (&w->timer, ev_priority (w)); 3268 ev_set_priority (&w->timer, ev_priority (w));
3269
3270#if EV_USE_INOTIFY
3271 infy_init (EV_A);
3272
3273 if (fs_fd >= 0)
3274 infy_add (EV_A_ w);
3275 else
3276#endif
3277 {
1803 ev_timer_start (EV_A_ &w->timer); 3278 ev_timer_again (EV_A_ &w->timer);
3279 ev_unref (EV_A);
3280 }
1804 3281
1805 ev_start (EV_A_ (W)w, 1); 3282 ev_start (EV_A_ (W)w, 1);
3283
3284 EV_FREQUENT_CHECK;
1806} 3285}
1807 3286
1808void 3287void
1809ev_stat_stop (EV_P_ ev_stat *w) 3288ev_stat_stop (EV_P_ ev_stat *w)
1810{ 3289{
1811 ev_clear_pending (EV_A_ (W)w); 3290 clear_pending (EV_A_ (W)w);
1812 if (expect_false (!ev_is_active (w))) 3291 if (expect_false (!ev_is_active (w)))
1813 return; 3292 return;
1814 3293
3294 EV_FREQUENT_CHECK;
3295
3296#if EV_USE_INOTIFY
3297 infy_del (EV_A_ w);
3298#endif
3299
3300 if (ev_is_active (&w->timer))
3301 {
3302 ev_ref (EV_A);
1815 ev_timer_stop (EV_A_ &w->timer); 3303 ev_timer_stop (EV_A_ &w->timer);
3304 }
1816 3305
1817 ev_stop (EV_A_ (W)w); 3306 ev_stop (EV_A_ (W)w);
3307
3308 EV_FREQUENT_CHECK;
3309}
3310#endif
3311
3312#if EV_IDLE_ENABLE
3313void
3314ev_idle_start (EV_P_ ev_idle *w)
3315{
3316 if (expect_false (ev_is_active (w)))
3317 return;
3318
3319 pri_adjust (EV_A_ (W)w);
3320
3321 EV_FREQUENT_CHECK;
3322
3323 {
3324 int active = ++idlecnt [ABSPRI (w)];
3325
3326 ++idleall;
3327 ev_start (EV_A_ (W)w, active);
3328
3329 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
3330 idles [ABSPRI (w)][active - 1] = w;
3331 }
3332
3333 EV_FREQUENT_CHECK;
3334}
3335
3336void
3337ev_idle_stop (EV_P_ ev_idle *w)
3338{
3339 clear_pending (EV_A_ (W)w);
3340 if (expect_false (!ev_is_active (w)))
3341 return;
3342
3343 EV_FREQUENT_CHECK;
3344
3345 {
3346 int active = ev_active (w);
3347
3348 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
3349 ev_active (idles [ABSPRI (w)][active - 1]) = active;
3350
3351 ev_stop (EV_A_ (W)w);
3352 --idleall;
3353 }
3354
3355 EV_FREQUENT_CHECK;
3356}
3357#endif
3358
3359#if EV_PREPARE_ENABLE
3360void
3361ev_prepare_start (EV_P_ ev_prepare *w)
3362{
3363 if (expect_false (ev_is_active (w)))
3364 return;
3365
3366 EV_FREQUENT_CHECK;
3367
3368 ev_start (EV_A_ (W)w, ++preparecnt);
3369 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
3370 prepares [preparecnt - 1] = w;
3371
3372 EV_FREQUENT_CHECK;
3373}
3374
3375void
3376ev_prepare_stop (EV_P_ ev_prepare *w)
3377{
3378 clear_pending (EV_A_ (W)w);
3379 if (expect_false (!ev_is_active (w)))
3380 return;
3381
3382 EV_FREQUENT_CHECK;
3383
3384 {
3385 int active = ev_active (w);
3386
3387 prepares [active - 1] = prepares [--preparecnt];
3388 ev_active (prepares [active - 1]) = active;
3389 }
3390
3391 ev_stop (EV_A_ (W)w);
3392
3393 EV_FREQUENT_CHECK;
3394}
3395#endif
3396
3397#if EV_CHECK_ENABLE
3398void
3399ev_check_start (EV_P_ ev_check *w)
3400{
3401 if (expect_false (ev_is_active (w)))
3402 return;
3403
3404 EV_FREQUENT_CHECK;
3405
3406 ev_start (EV_A_ (W)w, ++checkcnt);
3407 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
3408 checks [checkcnt - 1] = w;
3409
3410 EV_FREQUENT_CHECK;
3411}
3412
3413void
3414ev_check_stop (EV_P_ ev_check *w)
3415{
3416 clear_pending (EV_A_ (W)w);
3417 if (expect_false (!ev_is_active (w)))
3418 return;
3419
3420 EV_FREQUENT_CHECK;
3421
3422 {
3423 int active = ev_active (w);
3424
3425 checks [active - 1] = checks [--checkcnt];
3426 ev_active (checks [active - 1]) = active;
3427 }
3428
3429 ev_stop (EV_A_ (W)w);
3430
3431 EV_FREQUENT_CHECK;
3432}
3433#endif
3434
3435#if EV_EMBED_ENABLE
3436void noinline
3437ev_embed_sweep (EV_P_ ev_embed *w)
3438{
3439 ev_run (w->other, EVRUN_NOWAIT);
3440}
3441
3442static void
3443embed_io_cb (EV_P_ ev_io *io, int revents)
3444{
3445 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3446
3447 if (ev_cb (w))
3448 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3449 else
3450 ev_run (w->other, EVRUN_NOWAIT);
3451}
3452
3453static void
3454embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3455{
3456 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3457
3458 {
3459 EV_P = w->other;
3460
3461 while (fdchangecnt)
3462 {
3463 fd_reify (EV_A);
3464 ev_run (EV_A_ EVRUN_NOWAIT);
3465 }
3466 }
3467}
3468
3469static void
3470embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3471{
3472 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3473
3474 ev_embed_stop (EV_A_ w);
3475
3476 {
3477 EV_P = w->other;
3478
3479 ev_loop_fork (EV_A);
3480 ev_run (EV_A_ EVRUN_NOWAIT);
3481 }
3482
3483 ev_embed_start (EV_A_ w);
3484}
3485
3486#if 0
3487static void
3488embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3489{
3490 ev_idle_stop (EV_A_ idle);
3491}
3492#endif
3493
3494void
3495ev_embed_start (EV_P_ ev_embed *w)
3496{
3497 if (expect_false (ev_is_active (w)))
3498 return;
3499
3500 {
3501 EV_P = w->other;
3502 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3503 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3504 }
3505
3506 EV_FREQUENT_CHECK;
3507
3508 ev_set_priority (&w->io, ev_priority (w));
3509 ev_io_start (EV_A_ &w->io);
3510
3511 ev_prepare_init (&w->prepare, embed_prepare_cb);
3512 ev_set_priority (&w->prepare, EV_MINPRI);
3513 ev_prepare_start (EV_A_ &w->prepare);
3514
3515 ev_fork_init (&w->fork, embed_fork_cb);
3516 ev_fork_start (EV_A_ &w->fork);
3517
3518 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3519
3520 ev_start (EV_A_ (W)w, 1);
3521
3522 EV_FREQUENT_CHECK;
3523}
3524
3525void
3526ev_embed_stop (EV_P_ ev_embed *w)
3527{
3528 clear_pending (EV_A_ (W)w);
3529 if (expect_false (!ev_is_active (w)))
3530 return;
3531
3532 EV_FREQUENT_CHECK;
3533
3534 ev_io_stop (EV_A_ &w->io);
3535 ev_prepare_stop (EV_A_ &w->prepare);
3536 ev_fork_stop (EV_A_ &w->fork);
3537
3538 ev_stop (EV_A_ (W)w);
3539
3540 EV_FREQUENT_CHECK;
3541}
3542#endif
3543
3544#if EV_FORK_ENABLE
3545void
3546ev_fork_start (EV_P_ ev_fork *w)
3547{
3548 if (expect_false (ev_is_active (w)))
3549 return;
3550
3551 EV_FREQUENT_CHECK;
3552
3553 ev_start (EV_A_ (W)w, ++forkcnt);
3554 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
3555 forks [forkcnt - 1] = w;
3556
3557 EV_FREQUENT_CHECK;
3558}
3559
3560void
3561ev_fork_stop (EV_P_ ev_fork *w)
3562{
3563 clear_pending (EV_A_ (W)w);
3564 if (expect_false (!ev_is_active (w)))
3565 return;
3566
3567 EV_FREQUENT_CHECK;
3568
3569 {
3570 int active = ev_active (w);
3571
3572 forks [active - 1] = forks [--forkcnt];
3573 ev_active (forks [active - 1]) = active;
3574 }
3575
3576 ev_stop (EV_A_ (W)w);
3577
3578 EV_FREQUENT_CHECK;
3579}
3580#endif
3581
3582#if EV_ASYNC_ENABLE
3583void
3584ev_async_start (EV_P_ ev_async *w)
3585{
3586 if (expect_false (ev_is_active (w)))
3587 return;
3588
3589 w->sent = 0;
3590
3591 evpipe_init (EV_A);
3592
3593 EV_FREQUENT_CHECK;
3594
3595 ev_start (EV_A_ (W)w, ++asynccnt);
3596 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3597 asyncs [asynccnt - 1] = w;
3598
3599 EV_FREQUENT_CHECK;
3600}
3601
3602void
3603ev_async_stop (EV_P_ ev_async *w)
3604{
3605 clear_pending (EV_A_ (W)w);
3606 if (expect_false (!ev_is_active (w)))
3607 return;
3608
3609 EV_FREQUENT_CHECK;
3610
3611 {
3612 int active = ev_active (w);
3613
3614 asyncs [active - 1] = asyncs [--asynccnt];
3615 ev_active (asyncs [active - 1]) = active;
3616 }
3617
3618 ev_stop (EV_A_ (W)w);
3619
3620 EV_FREQUENT_CHECK;
3621}
3622
3623void
3624ev_async_send (EV_P_ ev_async *w)
3625{
3626 w->sent = 1;
3627 evpipe_write (EV_A_ &async_pending);
1818} 3628}
1819#endif 3629#endif
1820 3630
1821/*****************************************************************************/ 3631/*****************************************************************************/
1822 3632
… …
1832once_cb (EV_P_ struct ev_once *once, int revents) 3642once_cb (EV_P_ struct ev_once *once, int revents)
1833{ 3643{
1834 void (*cb)(int revents, void *arg) = once->cb; 3644 void (*cb)(int revents, void *arg) = once->cb;
1835 void *arg = once->arg; 3645 void *arg = once->arg;
1836 3646
1837 ev_io_stop (EV_A_ &once->io); 3647 ev_io_stop (EV_A_ &once->io);
1838 ev_timer_stop (EV_A_ &once->to); 3648 ev_timer_stop (EV_A_ &once->to);
1839 ev_free (once); 3649 ev_free (once);
1840 3650
1841 cb (revents, arg); 3651 cb (revents, arg);
1842} 3652}
1843 3653
1844static void 3654static void
1845once_cb_io (EV_P_ ev_io *w, int revents) 3655once_cb_io (EV_P_ ev_io *w, int revents)
1846{ 3656{
1847 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3657 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3658
3659 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
1848} 3660}
1849 3661
1850static void 3662static void
1851once_cb_to (EV_P_ ev_timer *w, int revents) 3663once_cb_to (EV_P_ ev_timer *w, int revents)
1852{ 3664{
1853 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3665 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3666
3667 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
1854} 3668}
1855 3669
1856void 3670void
1857ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3671ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1858{ 3672{
1859 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3673 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1860 3674
1861 if (expect_false (!once)) 3675 if (expect_false (!once))
1862 { 3676 {
1863 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3677 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
1864 return; 3678 return;
1865 } 3679 }
1866 3680
1867 once->cb = cb; 3681 once->cb = cb;
1868 once->arg = arg; 3682 once->arg = arg;
… …
1880 ev_timer_set (&once->to, timeout, 0.); 3694 ev_timer_set (&once->to, timeout, 0.);
1881 ev_timer_start (EV_A_ &once->to); 3695 ev_timer_start (EV_A_ &once->to);
1882 } 3696 }
1883} 3697}
1884 3698
1885#ifdef __cplusplus 3699/*****************************************************************************/
1886} 3700
3701#if EV_WALK_ENABLE
3702void
3703ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3704{
3705 int i, j;
3706 ev_watcher_list *wl, *wn;
3707
3708 if (types & (EV_IO | EV_EMBED))
3709 for (i = 0; i < anfdmax; ++i)
3710 for (wl = anfds [i].head; wl; )
3711 {
3712 wn = wl->next;
3713
3714#if EV_EMBED_ENABLE
3715 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3716 {
3717 if (types & EV_EMBED)
3718 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3719 }
3720 else
3721#endif
3722#if EV_USE_INOTIFY
3723 if (ev_cb ((ev_io *)wl) == infy_cb)
3724 ;
3725 else
3726#endif
3727 if ((ev_io *)wl != &pipe_w)
3728 if (types & EV_IO)
3729 cb (EV_A_ EV_IO, wl);
3730
3731 wl = wn;
3732 }
3733
3734 if (types & (EV_TIMER | EV_STAT))
3735 for (i = timercnt + HEAP0; i-- > HEAP0; )
3736#if EV_STAT_ENABLE
3737 /*TODO: timer is not always active*/
3738 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3739 {
3740 if (types & EV_STAT)
3741 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3742 }
3743 else
3744#endif
3745 if (types & EV_TIMER)
3746 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3747
3748#if EV_PERIODIC_ENABLE
3749 if (types & EV_PERIODIC)
3750 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3751 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3752#endif
3753
3754#if EV_IDLE_ENABLE
3755 if (types & EV_IDLE)
3756 for (j = NUMPRI; i--; )
3757 for (i = idlecnt [j]; i--; )
3758 cb (EV_A_ EV_IDLE, idles [j][i]);
3759#endif
3760
3761#if EV_FORK_ENABLE
3762 if (types & EV_FORK)
3763 for (i = forkcnt; i--; )
3764 if (ev_cb (forks [i]) != embed_fork_cb)
3765 cb (EV_A_ EV_FORK, forks [i]);
3766#endif
3767
3768#if EV_ASYNC_ENABLE
3769 if (types & EV_ASYNC)
3770 for (i = asynccnt; i--; )
3771 cb (EV_A_ EV_ASYNC, asyncs [i]);
3772#endif
3773
3774#if EV_PREPARE_ENABLE
3775 if (types & EV_PREPARE)
3776 for (i = preparecnt; i--; )
3777# if EV_EMBED_ENABLE
3778 if (ev_cb (prepares [i]) != embed_prepare_cb)
1887#endif 3779# endif
3780 cb (EV_A_ EV_PREPARE, prepares [i]);
3781#endif
1888 3782
3783#if EV_CHECK_ENABLE
3784 if (types & EV_CHECK)
3785 for (i = checkcnt; i--; )
3786 cb (EV_A_ EV_CHECK, checks [i]);
3787#endif
3788
3789#if EV_SIGNAL_ENABLE
3790 if (types & EV_SIGNAL)
3791 for (i = 0; i < EV_NSIG - 1; ++i)
3792 for (wl = signals [i].head; wl; )
3793 {
3794 wn = wl->next;
3795 cb (EV_A_ EV_SIGNAL, wl);
3796 wl = wn;
3797 }
3798#endif
3799
3800#if EV_CHILD_ENABLE
3801 if (types & EV_CHILD)
3802 for (i = (EV_PID_HASHSIZE); i--; )
3803 for (wl = childs [i]; wl; )
3804 {
3805 wn = wl->next;
3806 cb (EV_A_ EV_CHILD, wl);
3807 wl = wn;
3808 }
3809#endif
3810/* EV_STAT 0x00001000 /* stat data changed */
3811/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3812}
3813#endif
3814
3815#if EV_MULTIPLICITY
3816 #include "ev_wrap.h"
3817#endif
3818
3819EV_CPP(})
3820

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