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Comparing libev/ev.c (file contents):
Revision 1.67 by root, Mon Nov 5 16:42:15 2007 UTC vs.
Revision 1.430 by root, Wed May 9 16:50:23 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met:
10 * 9 *
11 * * Redistributions of source code must retain the above copyright 10 * 1. Redistributions of source code must retain the above copyright notice,
12 * notice, this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
13 * 12 *
14 * * Redistributions in binary form must reproduce the above 13 * 2. Redistributions in binary form must reproduce the above copyright
15 * copyright notice, this list of conditions and the following 14 * notice, this list of conditions and the following disclaimer in the
16 * disclaimer in the documentation and/or other materials provided 15 * documentation and/or other materials provided with the distribution.
17 * with the distribution.
18 * 16 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Alternatively, the contents of this file may be used under the terms of
29 * the GNU General Public License ("GPL") version 2 or any later version,
30 * in which case the provisions of the GPL are applicable instead of
31 * the above. If you wish to allow the use of your version of this file
32 * only under the terms of the GPL and not to allow others to use your
33 * version of this file under the BSD license, indicate your decision
34 * by deleting the provisions above and replace them with the notice
35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL.
30 */ 38 */
39
40/* this big block deduces configuration from config.h */
31#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
42# ifdef EV_CONFIG_H
43# include EV_CONFIG_H
44# else
32# include "config.h" 45# include "config.h"
46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
33 67
34# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
71# endif
72# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
74# endif
75# else
76# ifndef EV_USE_MONOTONIC
77# define EV_USE_MONOTONIC 0
78# endif
79# ifndef EV_USE_REALTIME
80# define EV_USE_REALTIME 0
81# endif
37# endif 82# endif
38 83
84# if HAVE_NANOSLEEP
85# ifndef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
88# else
89# undef EV_USE_NANOSLEEP
90# define EV_USE_NANOSLEEP 0
91# endif
92
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
96# endif
97# else
98# undef EV_USE_SELECT
40# define EV_USE_SELECT 1 99# define EV_USE_SELECT 0
41# endif 100# endif
42 101
43# if HAVE_POLL && HAVE_POLL_H 102# if HAVE_POLL && HAVE_POLL_H
103# ifndef EV_USE_POLL
104# define EV_USE_POLL EV_FEATURE_BACKENDS
105# endif
106# else
107# undef EV_USE_POLL
44# define EV_USE_POLL 1 108# define EV_USE_POLL 0
45# endif 109# endif
46 110
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
112# ifndef EV_USE_EPOLL
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif
115# else
116# undef EV_USE_EPOLL
48# define EV_USE_EPOLL 1 117# define EV_USE_EPOLL 0
49# endif 118# endif
50 119
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_KQUEUE
52# define EV_USE_KQUEUE 1 126# define EV_USE_KQUEUE 0
53# endif 127# endif
54 128
129# if HAVE_PORT_H && HAVE_PORT_CREATE
130# ifndef EV_USE_PORT
131# define EV_USE_PORT EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
55#endif 136# endif
56 137
57#include <math.h> 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
139# ifndef EV_USE_INOTIFY
140# define EV_USE_INOTIFY EV_FEATURE_OS
141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
145# endif
146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
148# ifndef EV_USE_SIGNALFD
149# define EV_USE_SIGNALFD EV_FEATURE_OS
150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
163# endif
164
165#endif
166
58#include <stdlib.h> 167#include <stdlib.h>
59#include <unistd.h> 168#include <string.h>
60#include <fcntl.h> 169#include <fcntl.h>
61#include <signal.h>
62#include <stddef.h> 170#include <stddef.h>
63 171
64#include <stdio.h> 172#include <stdio.h>
65 173
66#include <assert.h> 174#include <assert.h>
67#include <errno.h> 175#include <errno.h>
68#include <sys/types.h> 176#include <sys/types.h>
177#include <time.h>
178#include <limits.h>
179
180#include <signal.h>
181
182#ifdef EV_H
183# include EV_H
184#else
185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
197#endif
198
69#ifndef WIN32 199#ifndef _WIN32
200# include <sys/time.h>
70# include <sys/wait.h> 201# include <sys/wait.h>
202# include <unistd.h>
203#else
204# include <io.h>
205# define WIN32_LEAN_AND_MEAN
206# include <windows.h>
207# include <winsock2.h>
208# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1
71#endif 210# endif
72#include <sys/time.h> 211# undef EV_AVOID_STDIO
73#include <time.h> 212#endif
74 213
75/**/ 214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221
222/* this block tries to deduce configuration from header-defined symbols and defaults */
223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# error "unable to find value for NSIG, please report"
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
256#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else
260# define EV_USE_CLOCK_SYSCALL 0
261# endif
262#endif
76 263
77#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
266# define EV_USE_MONOTONIC EV_FEATURE_OS
267# else
78# define EV_USE_MONOTONIC 1 268# define EV_USE_MONOTONIC 0
269# endif
270#endif
271
272#ifndef EV_USE_REALTIME
273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
274#endif
275
276#ifndef EV_USE_NANOSLEEP
277# if _POSIX_C_SOURCE >= 199309L
278# define EV_USE_NANOSLEEP EV_FEATURE_OS
279# else
280# define EV_USE_NANOSLEEP 0
281# endif
79#endif 282#endif
80 283
81#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
82# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
83#endif 286#endif
84 287
85#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
86# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 289# ifdef _WIN32
290# define EV_USE_POLL 0
291# else
292# define EV_USE_POLL EV_FEATURE_BACKENDS
293# endif
87#endif 294#endif
88 295
89#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
299# else
90# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
301# endif
91#endif 302#endif
92 303
93#ifndef EV_USE_KQUEUE 304#ifndef EV_USE_KQUEUE
94# define EV_USE_KQUEUE 0 305# define EV_USE_KQUEUE 0
95#endif 306#endif
96 307
308#ifndef EV_USE_PORT
309# define EV_USE_PORT 0
310#endif
311
97#ifndef EV_USE_WIN32 312#ifndef EV_USE_INOTIFY
98# ifdef WIN32 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
99# define EV_USE_WIN32 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
100# else 315# else
101# define EV_USE_WIN32 0 316# define EV_USE_INOTIFY 0
102# endif 317# endif
103#endif 318#endif
104 319
320#ifndef EV_PID_HASHSIZE
321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
322#endif
323
324#ifndef EV_INOTIFY_HASHSIZE
325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
326#endif
327
105#ifndef EV_USE_REALTIME 328#ifndef EV_USE_EVENTFD
106# define EV_USE_REALTIME 1 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
330# define EV_USE_EVENTFD EV_FEATURE_OS
331# else
332# define EV_USE_EVENTFD 0
107#endif 333# endif
334#endif
108 335
109/**/ 336#ifndef EV_USE_SIGNALFD
337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
338# define EV_USE_SIGNALFD EV_FEATURE_OS
339# else
340# define EV_USE_SIGNALFD 0
341# endif
342#endif
343
344#if 0 /* debugging */
345# define EV_VERIFY 3
346# define EV_USE_4HEAP 1
347# define EV_HEAP_CACHE_AT 1
348#endif
349
350#ifndef EV_VERIFY
351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
352#endif
353
354#ifndef EV_USE_4HEAP
355# define EV_USE_4HEAP EV_FEATURE_DATA
356#endif
357
358#ifndef EV_HEAP_CACHE_AT
359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif
361
362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
363/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL
365# include <sys/syscall.h>
366# ifdef SYS_clock_gettime
367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
368# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 1
370# else
371# undef EV_USE_CLOCK_SYSCALL
372# define EV_USE_CLOCK_SYSCALL 0
373# endif
374#endif
375
376/* this block fixes any misconfiguration where we know we run into trouble otherwise */
377
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
110 383
111#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
112# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
113# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
114#endif 387#endif
… …
116#ifndef CLOCK_REALTIME 389#ifndef CLOCK_REALTIME
117# undef EV_USE_REALTIME 390# undef EV_USE_REALTIME
118# define EV_USE_REALTIME 0 391# define EV_USE_REALTIME 0
119#endif 392#endif
120 393
394#if !EV_STAT_ENABLE
395# undef EV_USE_INOTIFY
396# define EV_USE_INOTIFY 0
397#endif
398
399#if !EV_USE_NANOSLEEP
400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
402# include <sys/select.h>
403# endif
404#endif
405
406#if EV_USE_INOTIFY
407# include <sys/statfs.h>
408# include <sys/inotify.h>
409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
410# ifndef IN_DONT_FOLLOW
411# undef EV_USE_INOTIFY
412# define EV_USE_INOTIFY 0
413# endif
414#endif
415
416#if EV_USE_EVENTFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef EFD_NONBLOCK
420# define EFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef EFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define EFD_CLOEXEC O_CLOEXEC
425# else
426# define EFD_CLOEXEC 02000000
427# endif
428# endif
429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
430#endif
431
432#if EV_USE_SIGNALFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
434# include <stdint.h>
435# ifndef SFD_NONBLOCK
436# define SFD_NONBLOCK O_NONBLOCK
437# endif
438# ifndef SFD_CLOEXEC
439# ifdef O_CLOEXEC
440# define SFD_CLOEXEC O_CLOEXEC
441# else
442# define SFD_CLOEXEC 02000000
443# endif
444# endif
445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
446
447struct signalfd_siginfo
448{
449 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)];
451};
452#endif
453
121/**/ 454/**/
122 455
456#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else
459# define EV_FREQUENT_CHECK do { } while (0)
460#endif
461
462/*
463 * This is used to work around floating point rounding problems.
464 * This value is good at least till the year 4000.
465 */
466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
468
123#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
125#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
127 471
128#include "ev.h" 472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
129 474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509#ifdef _WIN32
510 typedef signed char int8_t;
511 typedef unsigned char uint8_t;
512 typedef signed short int16_t;
513 typedef unsigned short uint16_t;
514 typedef signed int int32_t;
515 typedef unsigned int uint32_t;
130#if __GNUC__ >= 3 516 #if __GNUC__
131# define expect(expr,value) __builtin_expect ((expr),(value)) 517 typedef signed long long int64_t;
132# define inline inline 518 typedef unsigned long long uint64_t;
519 #else /* _MSC_VER || __BORLANDC__ */
520 typedef signed __int64 int64_t;
521 typedef unsigned __int64 uint64_t;
522 #endif
133#else 523#else
134# define expect(expr,value) (expr) 524 #include <inttypes.h>
135# define inline static 525#endif
526
527/* many compilers define _GNUC_ to some versions but then only implement
528 * what their idiot authors think are the "more important" extensions,
529 * causing enormous grief in return for some better fake benchmark numbers.
530 * or so.
531 * we try to detect these and simply assume they are not gcc - if they have
532 * an issue with that they should have done it right in the first place.
533 */
534#ifndef ECB_GCC_VERSION
535 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
536 #define ECB_GCC_VERSION(major,minor) 0
537 #else
538 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
136#endif 539 #endif
137
138#define expect_false(expr) expect ((expr) != 0, 0)
139#define expect_true(expr) expect ((expr) != 0, 1)
140
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143
144typedef struct ev_watcher *W;
145typedef struct ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT;
147
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149
150#if WIN32
151/* note: the comment below could not be substantiated, but what would I care */
152/* MSDN says this is required to handle SIGFPE */
153volatile double SIGFPE_REQ = 0.0f;
154#endif 540#endif
155 541
156/*****************************************************************************/ 542/*****************************************************************************/
157 543
544/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
545/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
546
547#if ECB_NO_THREADS
548# define ECB_NO_SMP 1
549#endif
550
551#if ECB_NO_THREADS || ECB_NO_SMP
552 #define ECB_MEMORY_FENCE do { } while (0)
553#endif
554
555#ifndef ECB_MEMORY_FENCE
556 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
557 #if __i386 || __i386__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
559 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
560 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
561 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
565 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
567 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
568 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
570 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
571 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
573 #elif __sparc || __sparc__
574 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
575 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
576 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
577 #elif defined __s390__ || defined __s390x__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
579 #elif defined __mips__
580 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
581 #elif defined __alpha__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
583 #endif
584 #endif
585#endif
586
587#ifndef ECB_MEMORY_FENCE
588 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
589 #define ECB_MEMORY_FENCE __sync_synchronize ()
590 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
591 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
592 #elif _MSC_VER >= 1400 /* VC++ 2005 */
593 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
594 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
595 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
596 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
597 #elif defined _WIN32
598 #include <WinNT.h>
599 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
600 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
601 #include <mbarrier.h>
602 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
603 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
604 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
605 #elif __xlC__
606 #define ECB_MEMORY_FENCE __sync ()
607 #endif
608#endif
609
610#ifndef ECB_MEMORY_FENCE
611 #if !ECB_AVOID_PTHREADS
612 /*
613 * if you get undefined symbol references to pthread_mutex_lock,
614 * or failure to find pthread.h, then you should implement
615 * the ECB_MEMORY_FENCE operations for your cpu/compiler
616 * OR provide pthread.h and link against the posix thread library
617 * of your system.
618 */
619 #include <pthread.h>
620 #define ECB_NEEDS_PTHREADS 1
621 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
622
623 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
624 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
625 #endif
626#endif
627
628#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
629 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
630#endif
631
632#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
634#endif
635
636/*****************************************************************************/
637
638#define ECB_C99 (__STDC_VERSION__ >= 199901L)
639
640#if __cplusplus
641 #define ecb_inline static inline
642#elif ECB_GCC_VERSION(2,5)
643 #define ecb_inline static __inline__
644#elif ECB_C99
645 #define ecb_inline static inline
646#else
647 #define ecb_inline static
648#endif
649
650#if ECB_GCC_VERSION(3,3)
651 #define ecb_restrict __restrict__
652#elif ECB_C99
653 #define ecb_restrict restrict
654#else
655 #define ecb_restrict
656#endif
657
658typedef int ecb_bool;
659
660#define ECB_CONCAT_(a, b) a ## b
661#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
662#define ECB_STRINGIFY_(a) # a
663#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
664
665#define ecb_function_ ecb_inline
666
667#if ECB_GCC_VERSION(3,1)
668 #define ecb_attribute(attrlist) __attribute__(attrlist)
669 #define ecb_is_constant(expr) __builtin_constant_p (expr)
670 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
671 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
672#else
673 #define ecb_attribute(attrlist)
674 #define ecb_is_constant(expr) 0
675 #define ecb_expect(expr,value) (expr)
676 #define ecb_prefetch(addr,rw,locality)
677#endif
678
679/* no emulation for ecb_decltype */
680#if ECB_GCC_VERSION(4,5)
681 #define ecb_decltype(x) __decltype(x)
682#elif ECB_GCC_VERSION(3,0)
683 #define ecb_decltype(x) __typeof(x)
684#endif
685
686#define ecb_noinline ecb_attribute ((__noinline__))
687#define ecb_noreturn ecb_attribute ((__noreturn__))
688#define ecb_unused ecb_attribute ((__unused__))
689#define ecb_const ecb_attribute ((__const__))
690#define ecb_pure ecb_attribute ((__pure__))
691
692#if ECB_GCC_VERSION(4,3)
693 #define ecb_artificial ecb_attribute ((__artificial__))
694 #define ecb_hot ecb_attribute ((__hot__))
695 #define ecb_cold ecb_attribute ((__cold__))
696#else
697 #define ecb_artificial
698 #define ecb_hot
699 #define ecb_cold
700#endif
701
702/* put around conditional expressions if you are very sure that the */
703/* expression is mostly true or mostly false. note that these return */
704/* booleans, not the expression. */
705#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
706#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
707/* for compatibility to the rest of the world */
708#define ecb_likely(expr) ecb_expect_true (expr)
709#define ecb_unlikely(expr) ecb_expect_false (expr)
710
711/* count trailing zero bits and count # of one bits */
712#if ECB_GCC_VERSION(3,4)
713 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
714 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
715 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
716 #define ecb_ctz32(x) __builtin_ctz (x)
717 #define ecb_ctz64(x) __builtin_ctzll (x)
718 #define ecb_popcount32(x) __builtin_popcount (x)
719 /* no popcountll */
720#else
721 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
722 ecb_function_ int
723 ecb_ctz32 (uint32_t x)
724 {
725 int r = 0;
726
727 x &= ~x + 1; /* this isolates the lowest bit */
728
729#if ECB_branchless_on_i386
730 r += !!(x & 0xaaaaaaaa) << 0;
731 r += !!(x & 0xcccccccc) << 1;
732 r += !!(x & 0xf0f0f0f0) << 2;
733 r += !!(x & 0xff00ff00) << 3;
734 r += !!(x & 0xffff0000) << 4;
735#else
736 if (x & 0xaaaaaaaa) r += 1;
737 if (x & 0xcccccccc) r += 2;
738 if (x & 0xf0f0f0f0) r += 4;
739 if (x & 0xff00ff00) r += 8;
740 if (x & 0xffff0000) r += 16;
741#endif
742
743 return r;
744 }
745
746 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
747 ecb_function_ int
748 ecb_ctz64 (uint64_t x)
749 {
750 int shift = x & 0xffffffffU ? 0 : 32;
751 return ecb_ctz32 (x >> shift) + shift;
752 }
753
754 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
755 ecb_function_ int
756 ecb_popcount32 (uint32_t x)
757 {
758 x -= (x >> 1) & 0x55555555;
759 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
760 x = ((x >> 4) + x) & 0x0f0f0f0f;
761 x *= 0x01010101;
762
763 return x >> 24;
764 }
765
766 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
767 ecb_function_ int ecb_ld32 (uint32_t x)
768 {
769 int r = 0;
770
771 if (x >> 16) { x >>= 16; r += 16; }
772 if (x >> 8) { x >>= 8; r += 8; }
773 if (x >> 4) { x >>= 4; r += 4; }
774 if (x >> 2) { x >>= 2; r += 2; }
775 if (x >> 1) { r += 1; }
776
777 return r;
778 }
779
780 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
781 ecb_function_ int ecb_ld64 (uint64_t x)
782 {
783 int r = 0;
784
785 if (x >> 32) { x >>= 32; r += 32; }
786
787 return r + ecb_ld32 (x);
788 }
789#endif
790
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
793{
794 return ( (x * 0x0802U & 0x22110U)
795 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
796}
797
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
800{
801 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
802 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
803 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
804 x = ( x >> 8 ) | ( x << 8);
805
806 return x;
807}
808
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
811{
812 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
813 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
814 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
815 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
816 x = ( x >> 16 ) | ( x << 16);
817
818 return x;
819}
820
821/* popcount64 is only available on 64 bit cpus as gcc builtin */
822/* so for this version we are lazy */
823ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
824ecb_function_ int
825ecb_popcount64 (uint64_t x)
826{
827 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
828}
829
830ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
831ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
838
839ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
840ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
841ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
842ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
843ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
844ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
845ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
846ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
847
848#if ECB_GCC_VERSION(4,3)
849 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
850 #define ecb_bswap32(x) __builtin_bswap32 (x)
851 #define ecb_bswap64(x) __builtin_bswap64 (x)
852#else
853 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
854 ecb_function_ uint16_t
855 ecb_bswap16 (uint16_t x)
856 {
857 return ecb_rotl16 (x, 8);
858 }
859
860 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
861 ecb_function_ uint32_t
862 ecb_bswap32 (uint32_t x)
863 {
864 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
865 }
866
867 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
868 ecb_function_ uint64_t
869 ecb_bswap64 (uint64_t x)
870 {
871 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
872 }
873#endif
874
875#if ECB_GCC_VERSION(4,5)
876 #define ecb_unreachable() __builtin_unreachable ()
877#else
878 /* this seems to work fine, but gcc always emits a warning for it :/ */
879 ecb_inline void ecb_unreachable (void) ecb_noreturn;
880 ecb_inline void ecb_unreachable (void) { }
881#endif
882
883/* try to tell the compiler that some condition is definitely true */
884#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
885
886ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
887ecb_inline unsigned char
888ecb_byteorder_helper (void)
889{
890 const uint32_t u = 0x11223344;
891 return *(unsigned char *)&u;
892}
893
894ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
895ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
896ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
897ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
898
899#if ECB_GCC_VERSION(3,0) || ECB_C99
900 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
901#else
902 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
903#endif
904
905#if __cplusplus
906 template<typename T>
907 static inline T ecb_div_rd (T val, T div)
908 {
909 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
910 }
911 template<typename T>
912 static inline T ecb_div_ru (T val, T div)
913 {
914 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
915 }
916#else
917 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
918 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
919#endif
920
921#if ecb_cplusplus_does_not_suck
922 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
923 template<typename T, int N>
924 static inline int ecb_array_length (const T (&arr)[N])
925 {
926 return N;
927 }
928#else
929 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
930#endif
931
932#endif
933
934/* ECB.H END */
935
936#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
937/* if your architecture doesn't need memory fences, e.g. because it is
938 * single-cpu/core, or if you use libev in a project that doesn't use libev
939 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
940 * libev, in which cases the memory fences become nops.
941 * alternatively, you can remove this #error and link against libpthread,
942 * which will then provide the memory fences.
943 */
944# error "memory fences not defined for your architecture, please report"
945#endif
946
947#ifndef ECB_MEMORY_FENCE
948# define ECB_MEMORY_FENCE do { } while (0)
949# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
950# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
951#endif
952
953#define expect_false(cond) ecb_expect_false (cond)
954#define expect_true(cond) ecb_expect_true (cond)
955#define noinline ecb_noinline
956
957#define inline_size ecb_inline
958
959#if EV_FEATURE_CODE
960# define inline_speed ecb_inline
961#else
962# define inline_speed static noinline
963#endif
964
965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
966
967#if EV_MINPRI == EV_MAXPRI
968# define ABSPRI(w) (((W)w), 0)
969#else
970# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
971#endif
972
973#define EMPTY /* required for microsofts broken pseudo-c compiler */
974#define EMPTY2(a,b) /* used to suppress some warnings */
975
976typedef ev_watcher *W;
977typedef ev_watcher_list *WL;
978typedef ev_watcher_time *WT;
979
980#define ev_active(w) ((W)(w))->active
981#define ev_at(w) ((WT)(w))->at
982
983#if EV_USE_REALTIME
984/* sig_atomic_t is used to avoid per-thread variables or locking but still */
985/* giving it a reasonably high chance of working on typical architectures */
986static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
987#endif
988
989#if EV_USE_MONOTONIC
990static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
991#endif
992
993#ifndef EV_FD_TO_WIN32_HANDLE
994# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
995#endif
996#ifndef EV_WIN32_HANDLE_TO_FD
997# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
998#endif
999#ifndef EV_WIN32_CLOSE_FD
1000# define EV_WIN32_CLOSE_FD(fd) close (fd)
1001#endif
1002
1003#ifdef _WIN32
1004# include "ev_win32.c"
1005#endif
1006
1007/*****************************************************************************/
1008
1009/* define a suitable floor function (only used by periodics atm) */
1010
1011#if EV_USE_FLOOR
1012# include <math.h>
1013# define ev_floor(v) floor (v)
1014#else
1015
1016#include <float.h>
1017
1018/* a floor() replacement function, should be independent of ev_tstamp type */
1019static ev_tstamp noinline
1020ev_floor (ev_tstamp v)
1021{
1022 /* the choice of shift factor is not terribly important */
1023#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1024 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1025#else
1026 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1027#endif
1028
1029 /* argument too large for an unsigned long? */
1030 if (expect_false (v >= shift))
1031 {
1032 ev_tstamp f;
1033
1034 if (v == v - 1.)
1035 return v; /* very large number */
1036
1037 f = shift * ev_floor (v * (1. / shift));
1038 return f + ev_floor (v - f);
1039 }
1040
1041 /* special treatment for negative args? */
1042 if (expect_false (v < 0.))
1043 {
1044 ev_tstamp f = -ev_floor (-v);
1045
1046 return f - (f == v ? 0 : 1);
1047 }
1048
1049 /* fits into an unsigned long */
1050 return (unsigned long)v;
1051}
1052
1053#endif
1054
1055/*****************************************************************************/
1056
1057#ifdef __linux
1058# include <sys/utsname.h>
1059#endif
1060
1061static unsigned int noinline ecb_cold
1062ev_linux_version (void)
1063{
1064#ifdef __linux
1065 unsigned int v = 0;
1066 struct utsname buf;
1067 int i;
1068 char *p = buf.release;
1069
1070 if (uname (&buf))
1071 return 0;
1072
1073 for (i = 3+1; --i; )
1074 {
1075 unsigned int c = 0;
1076
1077 for (;;)
1078 {
1079 if (*p >= '0' && *p <= '9')
1080 c = c * 10 + *p++ - '0';
1081 else
1082 {
1083 p += *p == '.';
1084 break;
1085 }
1086 }
1087
1088 v = (v << 8) | c;
1089 }
1090
1091 return v;
1092#else
1093 return 0;
1094#endif
1095}
1096
1097/*****************************************************************************/
1098
1099#if EV_AVOID_STDIO
1100static void noinline ecb_cold
1101ev_printerr (const char *msg)
1102{
1103 write (STDERR_FILENO, msg, strlen (msg));
1104}
1105#endif
1106
1107static void (*syserr_cb)(const char *msg) EV_THROW;
1108
1109void ecb_cold
1110ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
1111{
1112 syserr_cb = cb;
1113}
1114
1115static void noinline ecb_cold
1116ev_syserr (const char *msg)
1117{
1118 if (!msg)
1119 msg = "(libev) system error";
1120
1121 if (syserr_cb)
1122 syserr_cb (msg);
1123 else
1124 {
1125#if EV_AVOID_STDIO
1126 ev_printerr (msg);
1127 ev_printerr (": ");
1128 ev_printerr (strerror (errno));
1129 ev_printerr ("\n");
1130#else
1131 perror (msg);
1132#endif
1133 abort ();
1134 }
1135}
1136
1137static void *
1138ev_realloc_emul (void *ptr, long size)
1139{
1140#if __GLIBC__
1141 return realloc (ptr, size);
1142#else
1143 /* some systems, notably openbsd and darwin, fail to properly
1144 * implement realloc (x, 0) (as required by both ansi c-89 and
1145 * the single unix specification, so work around them here.
1146 */
1147
1148 if (size)
1149 return realloc (ptr, size);
1150
1151 free (ptr);
1152 return 0;
1153#endif
1154}
1155
1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1157
1158void ecb_cold
1159ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
1160{
1161 alloc = cb;
1162}
1163
1164inline_speed void *
1165ev_realloc (void *ptr, long size)
1166{
1167 ptr = alloc (ptr, size);
1168
1169 if (!ptr && size)
1170 {
1171#if EV_AVOID_STDIO
1172 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1173#else
1174 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1175#endif
1176 abort ();
1177 }
1178
1179 return ptr;
1180}
1181
1182#define ev_malloc(size) ev_realloc (0, (size))
1183#define ev_free(ptr) ev_realloc ((ptr), 0)
1184
1185/*****************************************************************************/
1186
1187/* set in reify when reification needed */
1188#define EV_ANFD_REIFY 1
1189
1190/* file descriptor info structure */
158typedef struct 1191typedef struct
159{ 1192{
160 struct ev_watcher_list *head; 1193 WL head;
161 unsigned char events; 1194 unsigned char events; /* the events watched for */
1195 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1196 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
162 unsigned char reify; 1197 unsigned char unused;
1198#if EV_USE_EPOLL
1199 unsigned int egen; /* generation counter to counter epoll bugs */
1200#endif
1201#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1202 SOCKET handle;
1203#endif
1204#if EV_USE_IOCP
1205 OVERLAPPED or, ow;
1206#endif
163} ANFD; 1207} ANFD;
164 1208
1209/* stores the pending event set for a given watcher */
165typedef struct 1210typedef struct
166{ 1211{
167 W w; 1212 W w;
168 int events; 1213 int events; /* the pending event set for the given watcher */
169} ANPENDING; 1214} ANPENDING;
170 1215
1216#if EV_USE_INOTIFY
1217/* hash table entry per inotify-id */
1218typedef struct
1219{
1220 WL head;
1221} ANFS;
1222#endif
1223
1224/* Heap Entry */
1225#if EV_HEAP_CACHE_AT
1226 /* a heap element */
1227 typedef struct {
1228 ev_tstamp at;
1229 WT w;
1230 } ANHE;
1231
1232 #define ANHE_w(he) (he).w /* access watcher, read-write */
1233 #define ANHE_at(he) (he).at /* access cached at, read-only */
1234 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
1235#else
1236 /* a heap element */
1237 typedef WT ANHE;
1238
1239 #define ANHE_w(he) (he)
1240 #define ANHE_at(he) (he)->at
1241 #define ANHE_at_cache(he)
1242#endif
1243
171#if EV_MULTIPLICITY 1244#if EV_MULTIPLICITY
172 1245
173struct ev_loop 1246 struct ev_loop
174{ 1247 {
1248 ev_tstamp ev_rt_now;
1249 #define ev_rt_now ((loop)->ev_rt_now)
175# define VAR(name,decl) decl; 1250 #define VAR(name,decl) decl;
176# include "ev_vars.h" 1251 #include "ev_vars.h"
177};
178# undef VAR 1252 #undef VAR
1253 };
179# include "ev_wrap.h" 1254 #include "ev_wrap.h"
1255
1256 static struct ev_loop default_loop_struct;
1257 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
180 1258
181#else 1259#else
182 1260
1261 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
183# define VAR(name,decl) static decl; 1262 #define VAR(name,decl) static decl;
184# include "ev_vars.h" 1263 #include "ev_vars.h"
185# undef VAR 1264 #undef VAR
186 1265
1266 static int ev_default_loop_ptr;
1267
187#endif 1268#endif
1269
1270#if EV_FEATURE_API
1271# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1272# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1273# define EV_INVOKE_PENDING invoke_cb (EV_A)
1274#else
1275# define EV_RELEASE_CB (void)0
1276# define EV_ACQUIRE_CB (void)0
1277# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1278#endif
1279
1280#define EVBREAK_RECURSE 0x80
188 1281
189/*****************************************************************************/ 1282/*****************************************************************************/
190 1283
191inline ev_tstamp 1284#ifndef EV_HAVE_EV_TIME
1285ev_tstamp
192ev_time (void) 1286ev_time (void) EV_THROW
193{ 1287{
194#if EV_USE_REALTIME 1288#if EV_USE_REALTIME
1289 if (expect_true (have_realtime))
1290 {
195 struct timespec ts; 1291 struct timespec ts;
196 clock_gettime (CLOCK_REALTIME, &ts); 1292 clock_gettime (CLOCK_REALTIME, &ts);
197 return ts.tv_sec + ts.tv_nsec * 1e-9; 1293 return ts.tv_sec + ts.tv_nsec * 1e-9;
198#else 1294 }
1295#endif
1296
199 struct timeval tv; 1297 struct timeval tv;
200 gettimeofday (&tv, 0); 1298 gettimeofday (&tv, 0);
201 return tv.tv_sec + tv.tv_usec * 1e-6; 1299 return tv.tv_sec + tv.tv_usec * 1e-6;
202#endif
203} 1300}
1301#endif
204 1302
205inline ev_tstamp 1303inline_size ev_tstamp
206get_clock (void) 1304get_clock (void)
207{ 1305{
208#if EV_USE_MONOTONIC 1306#if EV_USE_MONOTONIC
209 if (expect_true (have_monotonic)) 1307 if (expect_true (have_monotonic))
210 { 1308 {
… …
215#endif 1313#endif
216 1314
217 return ev_time (); 1315 return ev_time ();
218} 1316}
219 1317
1318#if EV_MULTIPLICITY
220ev_tstamp 1319ev_tstamp
221ev_now (EV_P) 1320ev_now (EV_P) EV_THROW
222{ 1321{
223 return rt_now; 1322 return ev_rt_now;
224} 1323}
1324#endif
225 1325
226#define array_roundsize(base,n) ((n) | 4 & ~3) 1326void
1327ev_sleep (ev_tstamp delay) EV_THROW
1328{
1329 if (delay > 0.)
1330 {
1331#if EV_USE_NANOSLEEP
1332 struct timespec ts;
227 1333
1334 EV_TS_SET (ts, delay);
1335 nanosleep (&ts, 0);
1336#elif defined _WIN32
1337 Sleep ((unsigned long)(delay * 1e3));
1338#else
1339 struct timeval tv;
1340
1341 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1342 /* something not guaranteed by newer posix versions, but guaranteed */
1343 /* by older ones */
1344 EV_TV_SET (tv, delay);
1345 select (0, 0, 0, 0, &tv);
1346#endif
1347 }
1348}
1349
1350/*****************************************************************************/
1351
1352#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
1353
1354/* find a suitable new size for the given array, */
1355/* hopefully by rounding to a nice-to-malloc size */
1356inline_size int
1357array_nextsize (int elem, int cur, int cnt)
1358{
1359 int ncur = cur + 1;
1360
1361 do
1362 ncur <<= 1;
1363 while (cnt > ncur);
1364
1365 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1366 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1367 {
1368 ncur *= elem;
1369 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1370 ncur = ncur - sizeof (void *) * 4;
1371 ncur /= elem;
1372 }
1373
1374 return ncur;
1375}
1376
1377static void * noinline ecb_cold
1378array_realloc (int elem, void *base, int *cur, int cnt)
1379{
1380 *cur = array_nextsize (elem, *cur, cnt);
1381 return ev_realloc (base, elem * *cur);
1382}
1383
1384#define array_init_zero(base,count) \
1385 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1386
228#define array_needsize(base,cur,cnt,init) \ 1387#define array_needsize(type,base,cur,cnt,init) \
229 if (expect_false ((cnt) > cur)) \ 1388 if (expect_false ((cnt) > (cur))) \
230 { \ 1389 { \
231 int newcnt = cur; \ 1390 int ecb_unused ocur_ = (cur); \
232 do \ 1391 (base) = (type *)array_realloc \
233 { \ 1392 (sizeof (type), (base), &(cur), (cnt)); \
234 newcnt = array_roundsize (base, newcnt << 1); \ 1393 init ((base) + (ocur_), (cur) - ocur_); \
235 } \
236 while ((cnt) > newcnt); \
237 \
238 base = realloc (base, sizeof (*base) * (newcnt)); \
239 init (base + cur, newcnt - cur); \
240 cur = newcnt; \
241 } 1394 }
242 1395
1396#if 0
243#define array_slim(stem) \ 1397#define array_slim(type,stem) \
244 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 1398 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245 { \ 1399 { \
246 stem ## max = array_roundsize (stem ## cnt >> 1); \ 1400 stem ## max = array_roundsize (stem ## cnt >> 1); \
247 base = realloc (base, sizeof (*base) * (stem ## max)); \ 1401 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
248 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1402 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
249 } 1403 }
1404#endif
250 1405
251#define array_free(stem, idx) \ 1406#define array_free(stem, idx) \
252 free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1407 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
253 1408
254/*****************************************************************************/ 1409/*****************************************************************************/
255 1410
256static void 1411/* dummy callback for pending events */
257anfds_init (ANFD *base, int count) 1412static void noinline
1413pendingcb (EV_P_ ev_prepare *w, int revents)
258{ 1414{
259 while (count--) 1415}
260 {
261 base->head = 0;
262 base->events = EV_NONE;
263 base->reify = 0;
264 1416
265 ++base; 1417void noinline
1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1419{
1420 W w_ = (W)w;
1421 int pri = ABSPRI (w_);
1422
1423 if (expect_false (w_->pending))
1424 pendings [pri][w_->pending - 1].events |= revents;
1425 else
266 } 1426 {
267} 1427 w_->pending = ++pendingcnt [pri];
268 1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
269static void 1429 pendings [pri][w_->pending - 1].w = w_;
270event (EV_P_ W w, int events)
271{
272 if (w->pending)
273 {
274 pendings [ABSPRI (w)][w->pending - 1].events |= events; 1430 pendings [pri][w_->pending - 1].events = revents;
275 return;
276 } 1431 }
277 1432
278 w->pending = ++pendingcnt [ABSPRI (w)]; 1433 pendingpri = NUMPRI - 1;
279 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
280 pendings [ABSPRI (w)][w->pending - 1].w = w;
281 pendings [ABSPRI (w)][w->pending - 1].events = events;
282} 1434}
283 1435
284static void 1436inline_speed void
1437feed_reverse (EV_P_ W w)
1438{
1439 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1440 rfeeds [rfeedcnt++] = w;
1441}
1442
1443inline_size void
1444feed_reverse_done (EV_P_ int revents)
1445{
1446 do
1447 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1448 while (rfeedcnt);
1449}
1450
1451inline_speed void
285queue_events (EV_P_ W *events, int eventcnt, int type) 1452queue_events (EV_P_ W *events, int eventcnt, int type)
286{ 1453{
287 int i; 1454 int i;
288 1455
289 for (i = 0; i < eventcnt; ++i) 1456 for (i = 0; i < eventcnt; ++i)
290 event (EV_A_ events [i], type); 1457 ev_feed_event (EV_A_ events [i], type);
291} 1458}
292 1459
293static void 1460/*****************************************************************************/
1461
1462inline_speed void
294fd_event (EV_P_ int fd, int events) 1463fd_event_nocheck (EV_P_ int fd, int revents)
295{ 1464{
296 ANFD *anfd = anfds + fd; 1465 ANFD *anfd = anfds + fd;
297 struct ev_io *w; 1466 ev_io *w;
298 1467
299 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 1468 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
300 { 1469 {
301 int ev = w->events & events; 1470 int ev = w->events & revents;
302 1471
303 if (ev) 1472 if (ev)
304 event (EV_A_ (W)w, ev); 1473 ev_feed_event (EV_A_ (W)w, ev);
305 } 1474 }
306} 1475}
307 1476
308/*****************************************************************************/ 1477/* do not submit kernel events for fds that have reify set */
1478/* because that means they changed while we were polling for new events */
1479inline_speed void
1480fd_event (EV_P_ int fd, int revents)
1481{
1482 ANFD *anfd = anfds + fd;
309 1483
310static void 1484 if (expect_true (!anfd->reify))
1485 fd_event_nocheck (EV_A_ fd, revents);
1486}
1487
1488void
1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1490{
1491 if (fd >= 0 && fd < anfdmax)
1492 fd_event_nocheck (EV_A_ fd, revents);
1493}
1494
1495/* make sure the external fd watch events are in-sync */
1496/* with the kernel/libev internal state */
1497inline_size void
311fd_reify (EV_P) 1498fd_reify (EV_P)
312{ 1499{
313 int i; 1500 int i;
314 1501
1502#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
315 for (i = 0; i < fdchangecnt; ++i) 1503 for (i = 0; i < fdchangecnt; ++i)
316 { 1504 {
317 int fd = fdchanges [i]; 1505 int fd = fdchanges [i];
318 ANFD *anfd = anfds + fd; 1506 ANFD *anfd = anfds + fd;
1507
1508 if (anfd->reify & EV__IOFDSET && anfd->head)
1509 {
1510 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1511
1512 if (handle != anfd->handle)
1513 {
1514 unsigned long arg;
1515
1516 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1517
1518 /* handle changed, but fd didn't - we need to do it in two steps */
1519 backend_modify (EV_A_ fd, anfd->events, 0);
1520 anfd->events = 0;
1521 anfd->handle = handle;
1522 }
1523 }
1524 }
1525#endif
1526
1527 for (i = 0; i < fdchangecnt; ++i)
1528 {
1529 int fd = fdchanges [i];
1530 ANFD *anfd = anfds + fd;
319 struct ev_io *w; 1531 ev_io *w;
320 1532
321 int events = 0; 1533 unsigned char o_events = anfd->events;
1534 unsigned char o_reify = anfd->reify;
322 1535
323 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
324 events |= w->events;
325
326 anfd->reify = 0; 1536 anfd->reify = 0;
327 1537
328 method_modify (EV_A_ fd, anfd->events, events); 1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1539 {
329 anfd->events = events; 1540 anfd->events = 0;
1541
1542 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1543 anfd->events |= (unsigned char)w->events;
1544
1545 if (o_events != anfd->events)
1546 o_reify = EV__IOFDSET; /* actually |= */
1547 }
1548
1549 if (o_reify & EV__IOFDSET)
1550 backend_modify (EV_A_ fd, o_events, anfd->events);
330 } 1551 }
331 1552
332 fdchangecnt = 0; 1553 fdchangecnt = 0;
333} 1554}
334 1555
335static void 1556/* something about the given fd changed */
1557inline_size void
336fd_change (EV_P_ int fd) 1558fd_change (EV_P_ int fd, int flags)
337{ 1559{
338 if (anfds [fd].reify || fdchangecnt < 0) 1560 unsigned char reify = anfds [fd].reify;
339 return;
340
341 anfds [fd].reify = 1; 1561 anfds [fd].reify |= flags;
342 1562
1563 if (expect_true (!reify))
1564 {
343 ++fdchangecnt; 1565 ++fdchangecnt;
344 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 1566 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
345 fdchanges [fdchangecnt - 1] = fd; 1567 fdchanges [fdchangecnt - 1] = fd;
1568 }
346} 1569}
347 1570
348static void 1571/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1572inline_speed void ecb_cold
349fd_kill (EV_P_ int fd) 1573fd_kill (EV_P_ int fd)
350{ 1574{
351 struct ev_io *w; 1575 ev_io *w;
352 1576
353 while ((w = (struct ev_io *)anfds [fd].head)) 1577 while ((w = (ev_io *)anfds [fd].head))
354 { 1578 {
355 ev_io_stop (EV_A_ w); 1579 ev_io_stop (EV_A_ w);
356 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1580 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
357 } 1581 }
1582}
1583
1584/* check whether the given fd is actually valid, for error recovery */
1585inline_size int ecb_cold
1586fd_valid (int fd)
1587{
1588#ifdef _WIN32
1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1590#else
1591 return fcntl (fd, F_GETFD) != -1;
1592#endif
358} 1593}
359 1594
360/* called on EBADF to verify fds */ 1595/* called on EBADF to verify fds */
361static void 1596static void noinline ecb_cold
362fd_ebadf (EV_P) 1597fd_ebadf (EV_P)
363{ 1598{
364 int fd; 1599 int fd;
365 1600
366 for (fd = 0; fd < anfdmax; ++fd) 1601 for (fd = 0; fd < anfdmax; ++fd)
367 if (anfds [fd].events) 1602 if (anfds [fd].events)
368 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 1603 if (!fd_valid (fd) && errno == EBADF)
369 fd_kill (EV_A_ fd); 1604 fd_kill (EV_A_ fd);
370} 1605}
371 1606
372/* called on ENOMEM in select/poll to kill some fds and retry */ 1607/* called on ENOMEM in select/poll to kill some fds and retry */
373static void 1608static void noinline ecb_cold
374fd_enomem (EV_P) 1609fd_enomem (EV_P)
375{ 1610{
376 int fd; 1611 int fd;
377 1612
378 for (fd = anfdmax; fd--; ) 1613 for (fd = anfdmax; fd--; )
379 if (anfds [fd].events) 1614 if (anfds [fd].events)
380 { 1615 {
381 close (fd);
382 fd_kill (EV_A_ fd); 1616 fd_kill (EV_A_ fd);
383 return; 1617 break;
384 } 1618 }
385} 1619}
386 1620
387/* susually called after fork if method needs to re-arm all fds from scratch */ 1621/* usually called after fork if backend needs to re-arm all fds from scratch */
388static void 1622static void noinline
389fd_rearm_all (EV_P) 1623fd_rearm_all (EV_P)
390{ 1624{
391 int fd; 1625 int fd;
392 1626
393 /* this should be highly optimised to not do anything but set a flag */
394 for (fd = 0; fd < anfdmax; ++fd) 1627 for (fd = 0; fd < anfdmax; ++fd)
395 if (anfds [fd].events) 1628 if (anfds [fd].events)
396 { 1629 {
397 anfds [fd].events = 0; 1630 anfds [fd].events = 0;
398 fd_change (EV_A_ fd); 1631 anfds [fd].emask = 0;
1632 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
399 } 1633 }
400} 1634}
401 1635
1636/* used to prepare libev internal fd's */
1637/* this is not fork-safe */
1638inline_speed void
1639fd_intern (int fd)
1640{
1641#ifdef _WIN32
1642 unsigned long arg = 1;
1643 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1644#else
1645 fcntl (fd, F_SETFD, FD_CLOEXEC);
1646 fcntl (fd, F_SETFL, O_NONBLOCK);
1647#endif
1648}
1649
402/*****************************************************************************/ 1650/*****************************************************************************/
403 1651
1652/*
1653 * the heap functions want a real array index. array index 0 is guaranteed to not
1654 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1655 * the branching factor of the d-tree.
1656 */
1657
1658/*
1659 * at the moment we allow libev the luxury of two heaps,
1660 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1661 * which is more cache-efficient.
1662 * the difference is about 5% with 50000+ watchers.
1663 */
1664#if EV_USE_4HEAP
1665
1666#define DHEAP 4
1667#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1668#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1669#define UPHEAP_DONE(p,k) ((p) == (k))
1670
1671/* away from the root */
1672inline_speed void
1673downheap (ANHE *heap, int N, int k)
1674{
1675 ANHE he = heap [k];
1676 ANHE *E = heap + N + HEAP0;
1677
1678 for (;;)
1679 {
1680 ev_tstamp minat;
1681 ANHE *minpos;
1682 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1683
1684 /* find minimum child */
1685 if (expect_true (pos + DHEAP - 1 < E))
1686 {
1687 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1688 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1689 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1690 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1691 }
1692 else if (pos < E)
1693 {
1694 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1695 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1696 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1697 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1698 }
1699 else
1700 break;
1701
1702 if (ANHE_at (he) <= minat)
1703 break;
1704
1705 heap [k] = *minpos;
1706 ev_active (ANHE_w (*minpos)) = k;
1707
1708 k = minpos - heap;
1709 }
1710
1711 heap [k] = he;
1712 ev_active (ANHE_w (he)) = k;
1713}
1714
1715#else /* 4HEAP */
1716
1717#define HEAP0 1
1718#define HPARENT(k) ((k) >> 1)
1719#define UPHEAP_DONE(p,k) (!(p))
1720
1721/* away from the root */
1722inline_speed void
1723downheap (ANHE *heap, int N, int k)
1724{
1725 ANHE he = heap [k];
1726
1727 for (;;)
1728 {
1729 int c = k << 1;
1730
1731 if (c >= N + HEAP0)
1732 break;
1733
1734 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1735 ? 1 : 0;
1736
1737 if (ANHE_at (he) <= ANHE_at (heap [c]))
1738 break;
1739
1740 heap [k] = heap [c];
1741 ev_active (ANHE_w (heap [k])) = k;
1742
1743 k = c;
1744 }
1745
1746 heap [k] = he;
1747 ev_active (ANHE_w (he)) = k;
1748}
1749#endif
1750
1751/* towards the root */
1752inline_speed void
1753upheap (ANHE *heap, int k)
1754{
1755 ANHE he = heap [k];
1756
1757 for (;;)
1758 {
1759 int p = HPARENT (k);
1760
1761 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1762 break;
1763
1764 heap [k] = heap [p];
1765 ev_active (ANHE_w (heap [k])) = k;
1766 k = p;
1767 }
1768
1769 heap [k] = he;
1770 ev_active (ANHE_w (he)) = k;
1771}
1772
1773/* move an element suitably so it is in a correct place */
1774inline_size void
1775adjustheap (ANHE *heap, int N, int k)
1776{
1777 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1778 upheap (heap, k);
1779 else
1780 downheap (heap, N, k);
1781}
1782
1783/* rebuild the heap: this function is used only once and executed rarely */
1784inline_size void
1785reheap (ANHE *heap, int N)
1786{
1787 int i;
1788
1789 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1790 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1791 for (i = 0; i < N; ++i)
1792 upheap (heap, i + HEAP0);
1793}
1794
1795/*****************************************************************************/
1796
1797/* associate signal watchers to a signal signal */
1798typedef struct
1799{
1800 EV_ATOMIC_T pending;
1801#if EV_MULTIPLICITY
1802 EV_P;
1803#endif
1804 WL head;
1805} ANSIG;
1806
1807static ANSIG signals [EV_NSIG - 1];
1808
1809/*****************************************************************************/
1810
1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1812
1813static void noinline ecb_cold
1814evpipe_init (EV_P)
1815{
1816 if (!ev_is_active (&pipe_w))
1817 {
1818# if EV_USE_EVENTFD
1819 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1820 if (evfd < 0 && errno == EINVAL)
1821 evfd = eventfd (0, 0);
1822
1823 if (evfd >= 0)
1824 {
1825 evpipe [0] = -1;
1826 fd_intern (evfd); /* doing it twice doesn't hurt */
1827 ev_io_set (&pipe_w, evfd, EV_READ);
1828 }
1829 else
1830# endif
1831 {
1832 while (pipe (evpipe))
1833 ev_syserr ("(libev) error creating signal/async pipe");
1834
1835 fd_intern (evpipe [0]);
1836 fd_intern (evpipe [1]);
1837 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1838 }
1839
1840 ev_io_start (EV_A_ &pipe_w);
1841 ev_unref (EV_A); /* watcher should not keep loop alive */
1842 }
1843}
1844
1845inline_speed void
1846evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1847{
1848 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1849
1850 if (expect_true (*flag))
1851 return;
1852
1853 *flag = 1;
1854
1855 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1856
1857 pipe_write_skipped = 1;
1858
1859 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1860
1861 if (pipe_write_wanted)
1862 {
1863 int old_errno;
1864
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1866
1867 old_errno = errno; /* save errno because write will clobber it */
1868
1869#if EV_USE_EVENTFD
1870 if (evfd >= 0)
1871 {
1872 uint64_t counter = 1;
1873 write (evfd, &counter, sizeof (uint64_t));
1874 }
1875 else
1876#endif
1877 {
1878#ifdef _WIN32
1879 WSABUF buf;
1880 DWORD sent;
1881 buf.buf = &buf;
1882 buf.len = 1;
1883 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1884#else
1885 write (evpipe [1], &(evpipe [1]), 1);
1886#endif
1887 }
1888
1889 errno = old_errno;
1890 }
1891}
1892
1893/* called whenever the libev signal pipe */
1894/* got some events (signal, async) */
404static void 1895static void
405upheap (WT *heap, int k) 1896pipecb (EV_P_ ev_io *iow, int revents)
406{ 1897{
407 WT w = heap [k]; 1898 int i;
408 1899
409 while (k && heap [k >> 1]->at > w->at) 1900 if (revents & EV_READ)
410 {
411 heap [k] = heap [k >> 1];
412 ((W)heap [k])->active = k + 1;
413 k >>= 1;
414 } 1901 {
1902#if EV_USE_EVENTFD
1903 if (evfd >= 0)
1904 {
1905 uint64_t counter;
1906 read (evfd, &counter, sizeof (uint64_t));
1907 }
1908 else
1909#endif
1910 {
1911 char dummy[4];
1912#ifdef _WIN32
1913 WSABUF buf;
1914 DWORD recvd;
1915 buf.buf = dummy;
1916 buf.len = sizeof (dummy);
1917 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1918#else
1919 read (evpipe [0], &dummy, sizeof (dummy));
1920#endif
1921 }
1922 }
415 1923
416 heap [k] = w; 1924 pipe_write_skipped = 0;
417 ((W)heap [k])->active = k + 1;
418 1925
1926 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1927
1928#if EV_SIGNAL_ENABLE
1929 if (sig_pending)
1930 {
1931 sig_pending = 0;
1932
1933 ECB_MEMORY_FENCE_RELEASE;
1934
1935 for (i = EV_NSIG - 1; i--; )
1936 if (expect_false (signals [i].pending))
1937 ev_feed_signal_event (EV_A_ i + 1);
1938 }
1939#endif
1940
1941#if EV_ASYNC_ENABLE
1942 if (async_pending)
1943 {
1944 async_pending = 0;
1945
1946 ECB_MEMORY_FENCE_RELEASE;
1947
1948 for (i = asynccnt; i--; )
1949 if (asyncs [i]->sent)
1950 {
1951 asyncs [i]->sent = 0;
1952 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1953 }
1954 }
1955#endif
1956}
1957
1958/*****************************************************************************/
1959
1960void
1961ev_feed_signal (int signum) EV_THROW
1962{
1963#if EV_MULTIPLICITY
1964 EV_P = signals [signum - 1].loop;
1965
1966 if (!EV_A)
1967 return;
1968#endif
1969
1970 if (!ev_active (&pipe_w))
1971 return;
1972
1973 signals [signum - 1].pending = 1;
1974 evpipe_write (EV_A_ &sig_pending);
419} 1975}
420 1976
421static void 1977static void
422downheap (WT *heap, int N, int k) 1978ev_sighandler (int signum)
423{ 1979{
424 WT w = heap [k]; 1980#ifdef _WIN32
1981 signal (signum, ev_sighandler);
1982#endif
425 1983
426 while (k < (N >> 1)) 1984 ev_feed_signal (signum);
427 { 1985}
428 int j = k << 1;
429 1986
430 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 1987void noinline
431 ++j; 1988ev_feed_signal_event (EV_P_ int signum) EV_THROW
1989{
1990 WL w;
432 1991
433 if (w->at <= heap [j]->at) 1992 if (expect_false (signum <= 0 || signum > EV_NSIG))
1993 return;
1994
1995 --signum;
1996
1997#if EV_MULTIPLICITY
1998 /* it is permissible to try to feed a signal to the wrong loop */
1999 /* or, likely more useful, feeding a signal nobody is waiting for */
2000
2001 if (expect_false (signals [signum].loop != EV_A))
2002 return;
2003#endif
2004
2005 signals [signum].pending = 0;
2006
2007 for (w = signals [signum].head; w; w = w->next)
2008 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
2009}
2010
2011#if EV_USE_SIGNALFD
2012static void
2013sigfdcb (EV_P_ ev_io *iow, int revents)
2014{
2015 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2016
2017 for (;;)
2018 {
2019 ssize_t res = read (sigfd, si, sizeof (si));
2020
2021 /* not ISO-C, as res might be -1, but works with SuS */
2022 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2023 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2024
2025 if (res < (ssize_t)sizeof (si))
434 break; 2026 break;
435
436 heap [k] = heap [j];
437 ((W)heap [k])->active = k + 1;
438 k = j;
439 } 2027 }
440
441 heap [k] = w;
442 ((W)heap [k])->active = k + 1;
443} 2028}
2029#endif
2030
2031#endif
444 2032
445/*****************************************************************************/ 2033/*****************************************************************************/
446 2034
447typedef struct 2035#if EV_CHILD_ENABLE
448{ 2036static WL childs [EV_PID_HASHSIZE];
449 struct ev_watcher_list *head;
450 sig_atomic_t volatile gotsig;
451} ANSIG;
452 2037
453static ANSIG *signals;
454static int signalmax;
455
456static int sigpipe [2];
457static sig_atomic_t volatile gotsig;
458static struct ev_io sigev;
459
460static void
461signals_init (ANSIG *base, int count)
462{
463 while (count--)
464 {
465 base->head = 0;
466 base->gotsig = 0;
467
468 ++base;
469 }
470}
471
472static void
473sighandler (int signum)
474{
475#if WIN32
476 signal (signum, sighandler);
477#endif
478
479 signals [signum - 1].gotsig = 1;
480
481 if (!gotsig)
482 {
483 int old_errno = errno;
484 gotsig = 1;
485 write (sigpipe [1], &signum, 1);
486 errno = old_errno;
487 }
488}
489
490static void
491sigcb (EV_P_ struct ev_io *iow, int revents)
492{
493 struct ev_watcher_list *w;
494 int signum;
495
496 read (sigpipe [0], &revents, 1);
497 gotsig = 0;
498
499 for (signum = signalmax; signum--; )
500 if (signals [signum].gotsig)
501 {
502 signals [signum].gotsig = 0;
503
504 for (w = signals [signum].head; w; w = w->next)
505 event (EV_A_ (W)w, EV_SIGNAL);
506 }
507}
508
509static void
510siginit (EV_P)
511{
512#ifndef WIN32
513 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
514 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
515
516 /* rather than sort out wether we really need nb, set it */
517 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
518 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
519#endif
520
521 ev_io_set (&sigev, sigpipe [0], EV_READ);
522 ev_io_start (EV_A_ &sigev);
523 ev_unref (EV_A); /* child watcher should not keep loop alive */
524}
525
526/*****************************************************************************/
527
528#ifndef WIN32
529
530static struct ev_child *childs [PID_HASHSIZE];
531static struct ev_signal childev; 2038static ev_signal childev;
2039
2040#ifndef WIFCONTINUED
2041# define WIFCONTINUED(status) 0
2042#endif
2043
2044/* handle a single child status event */
2045inline_speed void
2046child_reap (EV_P_ int chain, int pid, int status)
2047{
2048 ev_child *w;
2049 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
2050
2051 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2052 {
2053 if ((w->pid == pid || !w->pid)
2054 && (!traced || (w->flags & 1)))
2055 {
2056 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
2057 w->rpid = pid;
2058 w->rstatus = status;
2059 ev_feed_event (EV_A_ (W)w, EV_CHILD);
2060 }
2061 }
2062}
532 2063
533#ifndef WCONTINUED 2064#ifndef WCONTINUED
534# define WCONTINUED 0 2065# define WCONTINUED 0
535#endif 2066#endif
536 2067
2068/* called on sigchld etc., calls waitpid */
537static void 2069static void
538child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
539{
540 struct ev_child *w;
541
542 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
543 if (w->pid == pid || !w->pid)
544 {
545 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
546 w->rpid = pid;
547 w->rstatus = status;
548 event (EV_A_ (W)w, EV_CHILD);
549 }
550}
551
552static void
553childcb (EV_P_ struct ev_signal *sw, int revents) 2070childcb (EV_P_ ev_signal *sw, int revents)
554{ 2071{
555 int pid, status; 2072 int pid, status;
556 2073
2074 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
557 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 2075 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
558 { 2076 if (!WCONTINUED
2077 || errno != EINVAL
2078 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
2079 return;
2080
559 /* make sure we are called again until all childs have been reaped */ 2081 /* make sure we are called again until all children have been reaped */
2082 /* we need to do it this way so that the callback gets called before we continue */
560 event (EV_A_ (W)sw, EV_SIGNAL); 2083 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
561 2084
562 child_reap (EV_A_ sw, pid, pid, status); 2085 child_reap (EV_A_ pid, pid, status);
2086 if ((EV_PID_HASHSIZE) > 1)
563 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 2087 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
564 }
565} 2088}
566 2089
567#endif 2090#endif
568 2091
569/*****************************************************************************/ 2092/*****************************************************************************/
570 2093
2094#if EV_USE_IOCP
2095# include "ev_iocp.c"
2096#endif
2097#if EV_USE_PORT
2098# include "ev_port.c"
2099#endif
571#if EV_USE_KQUEUE 2100#if EV_USE_KQUEUE
572# include "ev_kqueue.c" 2101# include "ev_kqueue.c"
573#endif 2102#endif
574#if EV_USE_EPOLL 2103#if EV_USE_EPOLL
575# include "ev_epoll.c" 2104# include "ev_epoll.c"
… …
579#endif 2108#endif
580#if EV_USE_SELECT 2109#if EV_USE_SELECT
581# include "ev_select.c" 2110# include "ev_select.c"
582#endif 2111#endif
583 2112
584int 2113int ecb_cold
585ev_version_major (void) 2114ev_version_major (void) EV_THROW
586{ 2115{
587 return EV_VERSION_MAJOR; 2116 return EV_VERSION_MAJOR;
588} 2117}
589 2118
590int 2119int ecb_cold
591ev_version_minor (void) 2120ev_version_minor (void) EV_THROW
592{ 2121{
593 return EV_VERSION_MINOR; 2122 return EV_VERSION_MINOR;
594} 2123}
595 2124
596/* return true if we are running with elevated privileges and should ignore env variables */ 2125/* return true if we are running with elevated privileges and should ignore env variables */
597static int 2126int inline_size ecb_cold
598enable_secure (void) 2127enable_secure (void)
599{ 2128{
600#ifdef WIN32 2129#ifdef _WIN32
601 return 0; 2130 return 0;
602#else 2131#else
603 return getuid () != geteuid () 2132 return getuid () != geteuid ()
604 || getgid () != getegid (); 2133 || getgid () != getegid ();
605#endif 2134#endif
606} 2135}
607 2136
2137unsigned int ecb_cold
2138ev_supported_backends (void) EV_THROW
2139{
2140 unsigned int flags = 0;
2141
2142 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2143 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
2144 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2145 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2146 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2147
2148 return flags;
2149}
2150
2151unsigned int ecb_cold
2152ev_recommended_backends (void) EV_THROW
2153{
2154 unsigned int flags = ev_supported_backends ();
2155
2156#ifndef __NetBSD__
2157 /* kqueue is borked on everything but netbsd apparently */
2158 /* it usually doesn't work correctly on anything but sockets and pipes */
2159 flags &= ~EVBACKEND_KQUEUE;
2160#endif
2161#ifdef __APPLE__
2162 /* only select works correctly on that "unix-certified" platform */
2163 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2164 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2165#endif
2166#ifdef __FreeBSD__
2167 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2168#endif
2169
2170 return flags;
2171}
2172
2173unsigned int ecb_cold
2174ev_embeddable_backends (void) EV_THROW
2175{
2176 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2177
2178 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2179 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2180 flags &= ~EVBACKEND_EPOLL;
2181
2182 return flags;
2183}
2184
2185unsigned int
2186ev_backend (EV_P) EV_THROW
2187{
2188 return backend;
2189}
2190
2191#if EV_FEATURE_API
2192unsigned int
2193ev_iteration (EV_P) EV_THROW
2194{
2195 return loop_count;
2196}
2197
2198unsigned int
2199ev_depth (EV_P) EV_THROW
2200{
2201 return loop_depth;
2202}
2203
2204void
2205ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2206{
2207 io_blocktime = interval;
2208}
2209
2210void
2211ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2212{
2213 timeout_blocktime = interval;
2214}
2215
2216void
2217ev_set_userdata (EV_P_ void *data) EV_THROW
2218{
2219 userdata = data;
2220}
2221
2222void *
2223ev_userdata (EV_P) EV_THROW
2224{
2225 return userdata;
2226}
2227
2228void
2229ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2230{
2231 invoke_cb = invoke_pending_cb;
2232}
2233
2234void
2235ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2236{
2237 release_cb = release;
2238 acquire_cb = acquire;
2239}
2240#endif
2241
2242/* initialise a loop structure, must be zero-initialised */
2243static void noinline ecb_cold
2244loop_init (EV_P_ unsigned int flags) EV_THROW
2245{
2246 if (!backend)
2247 {
2248 origflags = flags;
2249
2250#if EV_USE_REALTIME
2251 if (!have_realtime)
2252 {
2253 struct timespec ts;
2254
2255 if (!clock_gettime (CLOCK_REALTIME, &ts))
2256 have_realtime = 1;
2257 }
2258#endif
2259
2260#if EV_USE_MONOTONIC
2261 if (!have_monotonic)
2262 {
2263 struct timespec ts;
2264
2265 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
2266 have_monotonic = 1;
2267 }
2268#endif
2269
2270 /* pid check not overridable via env */
2271#ifndef _WIN32
2272 if (flags & EVFLAG_FORKCHECK)
2273 curpid = getpid ();
2274#endif
2275
2276 if (!(flags & EVFLAG_NOENV)
2277 && !enable_secure ()
2278 && getenv ("LIBEV_FLAGS"))
2279 flags = atoi (getenv ("LIBEV_FLAGS"));
2280
2281 ev_rt_now = ev_time ();
2282 mn_now = get_clock ();
2283 now_floor = mn_now;
2284 rtmn_diff = ev_rt_now - mn_now;
2285#if EV_FEATURE_API
2286 invoke_cb = ev_invoke_pending;
2287#endif
2288
2289 io_blocktime = 0.;
2290 timeout_blocktime = 0.;
2291 backend = 0;
2292 backend_fd = -1;
2293 sig_pending = 0;
2294#if EV_ASYNC_ENABLE
2295 async_pending = 0;
2296#endif
2297 pipe_write_skipped = 0;
2298 pipe_write_wanted = 0;
2299#if EV_USE_INOTIFY
2300 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2301#endif
2302#if EV_USE_SIGNALFD
2303 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2304#endif
2305
2306 if (!(flags & EVBACKEND_MASK))
2307 flags |= ev_recommended_backends ();
2308
2309#if EV_USE_IOCP
2310 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2311#endif
2312#if EV_USE_PORT
2313 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2314#endif
2315#if EV_USE_KQUEUE
2316 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
2317#endif
2318#if EV_USE_EPOLL
2319 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2320#endif
2321#if EV_USE_POLL
2322 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2323#endif
2324#if EV_USE_SELECT
2325 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
2326#endif
2327
2328 ev_prepare_init (&pending_w, pendingcb);
2329
2330#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2331 ev_init (&pipe_w, pipecb);
2332 ev_set_priority (&pipe_w, EV_MAXPRI);
2333#endif
2334 }
2335}
2336
2337/* free up a loop structure */
2338void ecb_cold
2339ev_loop_destroy (EV_P)
2340{
2341 int i;
2342
2343#if EV_MULTIPLICITY
2344 /* mimic free (0) */
2345 if (!EV_A)
2346 return;
2347#endif
2348
2349#if EV_CLEANUP_ENABLE
2350 /* queue cleanup watchers (and execute them) */
2351 if (expect_false (cleanupcnt))
2352 {
2353 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2354 EV_INVOKE_PENDING;
2355 }
2356#endif
2357
2358#if EV_CHILD_ENABLE
2359 if (ev_is_active (&childev))
2360 {
2361 ev_ref (EV_A); /* child watcher */
2362 ev_signal_stop (EV_A_ &childev);
2363 }
2364#endif
2365
2366 if (ev_is_active (&pipe_w))
2367 {
2368 /*ev_ref (EV_A);*/
2369 /*ev_io_stop (EV_A_ &pipe_w);*/
2370
2371#if EV_USE_EVENTFD
2372 if (evfd >= 0)
2373 close (evfd);
2374#endif
2375
2376 if (evpipe [0] >= 0)
2377 {
2378 EV_WIN32_CLOSE_FD (evpipe [0]);
2379 EV_WIN32_CLOSE_FD (evpipe [1]);
2380 }
2381 }
2382
2383#if EV_USE_SIGNALFD
2384 if (ev_is_active (&sigfd_w))
2385 close (sigfd);
2386#endif
2387
2388#if EV_USE_INOTIFY
2389 if (fs_fd >= 0)
2390 close (fs_fd);
2391#endif
2392
2393 if (backend_fd >= 0)
2394 close (backend_fd);
2395
2396#if EV_USE_IOCP
2397 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2398#endif
2399#if EV_USE_PORT
2400 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2401#endif
2402#if EV_USE_KQUEUE
2403 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
2404#endif
2405#if EV_USE_EPOLL
2406 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2407#endif
2408#if EV_USE_POLL
2409 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2410#endif
2411#if EV_USE_SELECT
2412 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
2413#endif
2414
2415 for (i = NUMPRI; i--; )
2416 {
2417 array_free (pending, [i]);
2418#if EV_IDLE_ENABLE
2419 array_free (idle, [i]);
2420#endif
2421 }
2422
2423 ev_free (anfds); anfds = 0; anfdmax = 0;
2424
2425 /* have to use the microsoft-never-gets-it-right macro */
2426 array_free (rfeed, EMPTY);
2427 array_free (fdchange, EMPTY);
2428 array_free (timer, EMPTY);
2429#if EV_PERIODIC_ENABLE
2430 array_free (periodic, EMPTY);
2431#endif
2432#if EV_FORK_ENABLE
2433 array_free (fork, EMPTY);
2434#endif
2435#if EV_CLEANUP_ENABLE
2436 array_free (cleanup, EMPTY);
2437#endif
2438 array_free (prepare, EMPTY);
2439 array_free (check, EMPTY);
2440#if EV_ASYNC_ENABLE
2441 array_free (async, EMPTY);
2442#endif
2443
2444 backend = 0;
2445
2446#if EV_MULTIPLICITY
2447 if (ev_is_default_loop (EV_A))
2448#endif
2449 ev_default_loop_ptr = 0;
2450#if EV_MULTIPLICITY
2451 else
2452 ev_free (EV_A);
2453#endif
2454}
2455
2456#if EV_USE_INOTIFY
2457inline_size void infy_fork (EV_P);
2458#endif
2459
2460inline_size void
2461loop_fork (EV_P)
2462{
2463#if EV_USE_PORT
2464 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2465#endif
2466#if EV_USE_KQUEUE
2467 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
2468#endif
2469#if EV_USE_EPOLL
2470 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2471#endif
2472#if EV_USE_INOTIFY
2473 infy_fork (EV_A);
2474#endif
2475
2476 if (ev_is_active (&pipe_w))
2477 {
2478 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2479
2480 ev_ref (EV_A);
2481 ev_io_stop (EV_A_ &pipe_w);
2482
2483#if EV_USE_EVENTFD
2484 if (evfd >= 0)
2485 close (evfd);
2486#endif
2487
2488 if (evpipe [0] >= 0)
2489 {
2490 EV_WIN32_CLOSE_FD (evpipe [0]);
2491 EV_WIN32_CLOSE_FD (evpipe [1]);
2492 }
2493
2494#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2495 evpipe_init (EV_A);
2496 /* now iterate over everything, in case we missed something */
2497 pipecb (EV_A_ &pipe_w, EV_READ);
2498#endif
2499 }
2500
2501 postfork = 0;
2502}
2503
2504#if EV_MULTIPLICITY
2505
2506struct ev_loop * ecb_cold
2507ev_loop_new (unsigned int flags) EV_THROW
2508{
2509 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2510
2511 memset (EV_A, 0, sizeof (struct ev_loop));
2512 loop_init (EV_A_ flags);
2513
2514 if (ev_backend (EV_A))
2515 return EV_A;
2516
2517 ev_free (EV_A);
2518 return 0;
2519}
2520
2521#endif /* multiplicity */
2522
2523#if EV_VERIFY
2524static void noinline ecb_cold
2525verify_watcher (EV_P_ W w)
2526{
2527 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2528
2529 if (w->pending)
2530 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2531}
2532
2533static void noinline ecb_cold
2534verify_heap (EV_P_ ANHE *heap, int N)
2535{
2536 int i;
2537
2538 for (i = HEAP0; i < N + HEAP0; ++i)
2539 {
2540 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2541 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2542 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2543
2544 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2545 }
2546}
2547
2548static void noinline ecb_cold
2549array_verify (EV_P_ W *ws, int cnt)
2550{
2551 while (cnt--)
2552 {
2553 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2554 verify_watcher (EV_A_ ws [cnt]);
2555 }
2556}
2557#endif
2558
2559#if EV_FEATURE_API
2560void ecb_cold
2561ev_verify (EV_P) EV_THROW
2562{
2563#if EV_VERIFY
2564 int i;
2565 WL w, w2;
2566
2567 assert (activecnt >= -1);
2568
2569 assert (fdchangemax >= fdchangecnt);
2570 for (i = 0; i < fdchangecnt; ++i)
2571 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2572
2573 assert (anfdmax >= 0);
2574 for (i = 0; i < anfdmax; ++i)
2575 {
2576 int j = 0;
2577
2578 for (w = w2 = anfds [i].head; w; w = w->next)
2579 {
2580 verify_watcher (EV_A_ (W)w);
2581
2582 if (j++ & 1)
2583 {
2584 assert (("libev: io watcher list contains a loop", w != w2));
2585 w2 = w2->next;
2586 }
2587
2588 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2589 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2590 }
2591 }
2592
2593 assert (timermax >= timercnt);
2594 verify_heap (EV_A_ timers, timercnt);
2595
2596#if EV_PERIODIC_ENABLE
2597 assert (periodicmax >= periodiccnt);
2598 verify_heap (EV_A_ periodics, periodiccnt);
2599#endif
2600
2601 for (i = NUMPRI; i--; )
2602 {
2603 assert (pendingmax [i] >= pendingcnt [i]);
2604#if EV_IDLE_ENABLE
2605 assert (idleall >= 0);
2606 assert (idlemax [i] >= idlecnt [i]);
2607 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2608#endif
2609 }
2610
2611#if EV_FORK_ENABLE
2612 assert (forkmax >= forkcnt);
2613 array_verify (EV_A_ (W *)forks, forkcnt);
2614#endif
2615
2616#if EV_CLEANUP_ENABLE
2617 assert (cleanupmax >= cleanupcnt);
2618 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2619#endif
2620
2621#if EV_ASYNC_ENABLE
2622 assert (asyncmax >= asynccnt);
2623 array_verify (EV_A_ (W *)asyncs, asynccnt);
2624#endif
2625
2626#if EV_PREPARE_ENABLE
2627 assert (preparemax >= preparecnt);
2628 array_verify (EV_A_ (W *)prepares, preparecnt);
2629#endif
2630
2631#if EV_CHECK_ENABLE
2632 assert (checkmax >= checkcnt);
2633 array_verify (EV_A_ (W *)checks, checkcnt);
2634#endif
2635
2636# if 0
2637#if EV_CHILD_ENABLE
2638 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2639 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2640#endif
2641# endif
2642#endif
2643}
2644#endif
2645
2646#if EV_MULTIPLICITY
2647struct ev_loop * ecb_cold
2648#else
608int 2649int
609ev_method (EV_P) 2650#endif
2651ev_default_loop (unsigned int flags) EV_THROW
610{ 2652{
611 return method; 2653 if (!ev_default_loop_ptr)
612}
613
614static void
615loop_init (EV_P_ int methods)
616{
617 if (!method)
618 {
619#if EV_USE_MONOTONIC
620 { 2654 {
621 struct timespec ts;
622 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
623 have_monotonic = 1;
624 }
625#endif
626
627 rt_now = ev_time ();
628 mn_now = get_clock ();
629 now_floor = mn_now;
630 rtmn_diff = rt_now - mn_now;
631
632 if (methods == EVMETHOD_AUTO)
633 if (!enable_secure () && getenv ("LIBEV_METHODS"))
634 methods = atoi (getenv ("LIBEV_METHODS"));
635 else
636 methods = EVMETHOD_ANY;
637
638 method = 0;
639#if EV_USE_WIN32
640 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
641#endif
642#if EV_USE_KQUEUE
643 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
644#endif
645#if EV_USE_EPOLL
646 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
647#endif
648#if EV_USE_POLL
649 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
650#endif
651#if EV_USE_SELECT
652 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
653#endif
654 }
655}
656
657void
658loop_destroy (EV_P)
659{
660 int i;
661
662#if EV_USE_WIN32
663 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
664#endif
665#if EV_USE_KQUEUE
666 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
667#endif
668#if EV_USE_EPOLL
669 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
670#endif
671#if EV_USE_POLL
672 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
673#endif
674#if EV_USE_SELECT
675 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
676#endif
677
678 for (i = NUMPRI; i--; )
679 array_free (pending, [i]);
680
681 array_free (fdchange, );
682 array_free (timer, );
683 array_free (periodic, );
684 array_free (idle, );
685 array_free (prepare, );
686 array_free (check, );
687
688 method = 0;
689 /*TODO*/
690}
691
692void
693loop_fork (EV_P)
694{
695 /*TODO*/
696#if EV_USE_EPOLL
697 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
698#endif
699#if EV_USE_KQUEUE
700 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
701#endif
702}
703
704#if EV_MULTIPLICITY 2655#if EV_MULTIPLICITY
705struct ev_loop * 2656 EV_P = ev_default_loop_ptr = &default_loop_struct;
706ev_loop_new (int methods)
707{
708 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
709
710 loop_init (EV_A_ methods);
711
712 if (ev_method (EV_A))
713 return loop;
714
715 return 0;
716}
717
718void
719ev_loop_destroy (EV_P)
720{
721 loop_destroy (EV_A);
722 free (loop);
723}
724
725void
726ev_loop_fork (EV_P)
727{
728 loop_fork (EV_A);
729}
730
731#endif
732
733#if EV_MULTIPLICITY
734struct ev_loop default_loop_struct;
735static struct ev_loop *default_loop;
736
737struct ev_loop *
738#else 2657#else
739static int default_loop;
740
741int
742#endif
743ev_default_loop (int methods)
744{
745 if (sigpipe [0] == sigpipe [1])
746 if (pipe (sigpipe))
747 return 0;
748
749 if (!default_loop)
750 {
751#if EV_MULTIPLICITY
752 struct ev_loop *loop = default_loop = &default_loop_struct;
753#else
754 default_loop = 1; 2658 ev_default_loop_ptr = 1;
755#endif 2659#endif
756 2660
757 loop_init (EV_A_ methods); 2661 loop_init (EV_A_ flags);
758 2662
759 if (ev_method (EV_A)) 2663 if (ev_backend (EV_A))
760 { 2664 {
761 ev_watcher_init (&sigev, sigcb); 2665#if EV_CHILD_ENABLE
762 ev_set_priority (&sigev, EV_MAXPRI);
763 siginit (EV_A);
764
765#ifndef WIN32
766 ev_signal_init (&childev, childcb, SIGCHLD); 2666 ev_signal_init (&childev, childcb, SIGCHLD);
767 ev_set_priority (&childev, EV_MAXPRI); 2667 ev_set_priority (&childev, EV_MAXPRI);
768 ev_signal_start (EV_A_ &childev); 2668 ev_signal_start (EV_A_ &childev);
769 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2669 ev_unref (EV_A); /* child watcher should not keep loop alive */
770#endif 2670#endif
771 } 2671 }
772 else 2672 else
773 default_loop = 0; 2673 ev_default_loop_ptr = 0;
774 } 2674 }
775 2675
776 return default_loop; 2676 return ev_default_loop_ptr;
777} 2677}
778 2678
779void 2679void
780ev_default_destroy (void) 2680ev_loop_fork (EV_P) EV_THROW
781{ 2681{
782#if EV_MULTIPLICITY 2682 postfork = 1; /* must be in line with ev_default_fork */
783 struct ev_loop *loop = default_loop;
784#endif
785
786 ev_ref (EV_A); /* child watcher */
787 ev_signal_stop (EV_A_ &childev);
788
789 ev_ref (EV_A); /* signal watcher */
790 ev_io_stop (EV_A_ &sigev);
791
792 close (sigpipe [0]); sigpipe [0] = 0;
793 close (sigpipe [1]); sigpipe [1] = 0;
794
795 loop_destroy (EV_A);
796} 2683}
2684
2685/*****************************************************************************/
797 2686
798void 2687void
799ev_default_fork (void) 2688ev_invoke (EV_P_ void *w, int revents)
800{ 2689{
801#if EV_MULTIPLICITY 2690 EV_CB_INVOKE ((W)w, revents);
802 struct ev_loop *loop = default_loop;
803#endif
804
805 loop_fork (EV_A);
806
807 ev_io_stop (EV_A_ &sigev);
808 close (sigpipe [0]);
809 close (sigpipe [1]);
810 pipe (sigpipe);
811
812 ev_ref (EV_A); /* signal watcher */
813 siginit (EV_A);
814} 2691}
815 2692
816/*****************************************************************************/ 2693unsigned int
817 2694ev_pending_count (EV_P) EV_THROW
818static void
819call_pending (EV_P)
820{ 2695{
821 int pri; 2696 int pri;
2697 unsigned int count = 0;
822 2698
823 for (pri = NUMPRI; pri--; ) 2699 for (pri = NUMPRI; pri--; )
2700 count += pendingcnt [pri];
2701
2702 return count;
2703}
2704
2705void noinline
2706ev_invoke_pending (EV_P)
2707{
2708 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
824 while (pendingcnt [pri]) 2709 while (pendingcnt [pendingpri])
825 { 2710 {
826 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2711 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
827 2712
828 if (p->w)
829 {
830 p->w->pending = 0; 2713 p->w->pending = 0;
831 p->w->cb (EV_A_ p->w, p->events); 2714 EV_CB_INVOKE (p->w, p->events);
832 } 2715 EV_FREQUENT_CHECK;
833 } 2716 }
834} 2717}
835 2718
836static void 2719#if EV_IDLE_ENABLE
2720/* make idle watchers pending. this handles the "call-idle */
2721/* only when higher priorities are idle" logic */
2722inline_size void
837timers_reify (EV_P) 2723idle_reify (EV_P)
838{ 2724{
839 while (timercnt && ((WT)timers [0])->at <= mn_now) 2725 if (expect_false (idleall))
840 { 2726 {
841 struct ev_timer *w = timers [0]; 2727 int pri;
842 2728
843 assert (("inactive timer on timer heap detected", ev_is_active (w))); 2729 for (pri = NUMPRI; pri--; )
844
845 /* first reschedule or stop timer */
846 if (w->repeat)
847 { 2730 {
848 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2731 if (pendingcnt [pri])
849 ((WT)w)->at = mn_now + w->repeat; 2732 break;
850 downheap ((WT *)timers, timercnt, 0);
851 }
852 else
853 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
854 2733
855 event (EV_A_ (W)w, EV_TIMEOUT); 2734 if (idlecnt [pri])
856 }
857}
858
859static void
860periodics_reify (EV_P)
861{
862 while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
863 {
864 struct ev_periodic *w = periodics [0];
865
866 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
867
868 /* first reschedule or stop timer */
869 if (w->interval)
870 {
871 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
872 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
873 downheap ((WT *)periodics, periodiccnt, 0);
874 }
875 else
876 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
877
878 event (EV_A_ (W)w, EV_PERIODIC);
879 }
880}
881
882static void
883periodics_reschedule (EV_P)
884{
885 int i;
886
887 /* adjust periodics after time jump */
888 for (i = 0; i < periodiccnt; ++i)
889 {
890 struct ev_periodic *w = periodics [i];
891
892 if (w->interval)
893 {
894 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
895
896 if (fabs (diff) >= 1e-4)
897 { 2735 {
898 ev_periodic_stop (EV_A_ w); 2736 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
899 ev_periodic_start (EV_A_ w); 2737 break;
900
901 i = 0; /* restart loop, inefficient, but time jumps should be rare */
902 } 2738 }
903 } 2739 }
904 } 2740 }
905} 2741}
2742#endif
906 2743
907inline int 2744/* make timers pending */
908time_update_monotonic (EV_P) 2745inline_size void
2746timers_reify (EV_P)
909{ 2747{
910 mn_now = get_clock (); 2748 EV_FREQUENT_CHECK;
911 2749
912 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 2750 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
913 {
914 rt_now = rtmn_diff + mn_now;
915 return 0;
916 } 2751 {
917 else 2752 do
2753 {
2754 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2755
2756 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2757
2758 /* first reschedule or stop timer */
2759 if (w->repeat)
2760 {
2761 ev_at (w) += w->repeat;
2762 if (ev_at (w) < mn_now)
2763 ev_at (w) = mn_now;
2764
2765 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2766
2767 ANHE_at_cache (timers [HEAP0]);
2768 downheap (timers, timercnt, HEAP0);
2769 }
2770 else
2771 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2772
2773 EV_FREQUENT_CHECK;
2774 feed_reverse (EV_A_ (W)w);
2775 }
2776 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2777
2778 feed_reverse_done (EV_A_ EV_TIMER);
918 { 2779 }
919 now_floor = mn_now; 2780}
920 rt_now = ev_time (); 2781
921 return 1; 2782#if EV_PERIODIC_ENABLE
2783
2784static void noinline
2785periodic_recalc (EV_P_ ev_periodic *w)
2786{
2787 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2788 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2789
2790 /* the above almost always errs on the low side */
2791 while (at <= ev_rt_now)
922 } 2792 {
923} 2793 ev_tstamp nat = at + w->interval;
924 2794
925static void 2795 /* when resolution fails us, we use ev_rt_now */
926time_update (EV_P) 2796 if (expect_false (nat == at))
2797 {
2798 at = ev_rt_now;
2799 break;
2800 }
2801
2802 at = nat;
2803 }
2804
2805 ev_at (w) = at;
2806}
2807
2808/* make periodics pending */
2809inline_size void
2810periodics_reify (EV_P)
2811{
2812 EV_FREQUENT_CHECK;
2813
2814 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2815 {
2816 int feed_count = 0;
2817
2818 do
2819 {
2820 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2821
2822 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2823
2824 /* first reschedule or stop timer */
2825 if (w->reschedule_cb)
2826 {
2827 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2828
2829 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2830
2831 ANHE_at_cache (periodics [HEAP0]);
2832 downheap (periodics, periodiccnt, HEAP0);
2833 }
2834 else if (w->interval)
2835 {
2836 periodic_recalc (EV_A_ w);
2837 ANHE_at_cache (periodics [HEAP0]);
2838 downheap (periodics, periodiccnt, HEAP0);
2839 }
2840 else
2841 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2842
2843 EV_FREQUENT_CHECK;
2844 feed_reverse (EV_A_ (W)w);
2845 }
2846 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2847
2848 feed_reverse_done (EV_A_ EV_PERIODIC);
2849 }
2850}
2851
2852/* simply recalculate all periodics */
2853/* TODO: maybe ensure that at least one event happens when jumping forward? */
2854static void noinline ecb_cold
2855periodics_reschedule (EV_P)
927{ 2856{
928 int i; 2857 int i;
929 2858
2859 /* adjust periodics after time jump */
2860 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2861 {
2862 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2863
2864 if (w->reschedule_cb)
2865 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2866 else if (w->interval)
2867 periodic_recalc (EV_A_ w);
2868
2869 ANHE_at_cache (periodics [i]);
2870 }
2871
2872 reheap (periodics, periodiccnt);
2873}
2874#endif
2875
2876/* adjust all timers by a given offset */
2877static void noinline ecb_cold
2878timers_reschedule (EV_P_ ev_tstamp adjust)
2879{
2880 int i;
2881
2882 for (i = 0; i < timercnt; ++i)
2883 {
2884 ANHE *he = timers + i + HEAP0;
2885 ANHE_w (*he)->at += adjust;
2886 ANHE_at_cache (*he);
2887 }
2888}
2889
2890/* fetch new monotonic and realtime times from the kernel */
2891/* also detect if there was a timejump, and act accordingly */
2892inline_speed void
2893time_update (EV_P_ ev_tstamp max_block)
2894{
930#if EV_USE_MONOTONIC 2895#if EV_USE_MONOTONIC
931 if (expect_true (have_monotonic)) 2896 if (expect_true (have_monotonic))
932 { 2897 {
933 if (time_update_monotonic (EV_A)) 2898 int i;
2899 ev_tstamp odiff = rtmn_diff;
2900
2901 mn_now = get_clock ();
2902
2903 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2904 /* interpolate in the meantime */
2905 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
934 { 2906 {
935 ev_tstamp odiff = rtmn_diff; 2907 ev_rt_now = rtmn_diff + mn_now;
2908 return;
2909 }
936 2910
2911 now_floor = mn_now;
2912 ev_rt_now = ev_time ();
2913
937 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 2914 /* loop a few times, before making important decisions.
2915 * on the choice of "4": one iteration isn't enough,
2916 * in case we get preempted during the calls to
2917 * ev_time and get_clock. a second call is almost guaranteed
2918 * to succeed in that case, though. and looping a few more times
2919 * doesn't hurt either as we only do this on time-jumps or
2920 * in the unlikely event of having been preempted here.
2921 */
2922 for (i = 4; --i; )
938 { 2923 {
2924 ev_tstamp diff;
939 rtmn_diff = rt_now - mn_now; 2925 rtmn_diff = ev_rt_now - mn_now;
940 2926
941 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2927 diff = odiff - rtmn_diff;
2928
2929 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
942 return; /* all is well */ 2930 return; /* all is well */
943 2931
944 rt_now = ev_time (); 2932 ev_rt_now = ev_time ();
945 mn_now = get_clock (); 2933 mn_now = get_clock ();
946 now_floor = mn_now; 2934 now_floor = mn_now;
947 } 2935 }
948 2936
2937 /* no timer adjustment, as the monotonic clock doesn't jump */
2938 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
2939# if EV_PERIODIC_ENABLE
2940 periodics_reschedule (EV_A);
2941# endif
2942 }
2943 else
2944#endif
2945 {
2946 ev_rt_now = ev_time ();
2947
2948 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2949 {
2950 /* adjust timers. this is easy, as the offset is the same for all of them */
2951 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2952#if EV_PERIODIC_ENABLE
949 periodics_reschedule (EV_A); 2953 periodics_reschedule (EV_A);
950 /* no timer adjustment, as the monotonic clock doesn't jump */ 2954#endif
951 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
952 } 2955 }
953 }
954 else
955#endif
956 {
957 rt_now = ev_time ();
958 2956
959 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
960 {
961 periodics_reschedule (EV_A);
962
963 /* adjust timers. this is easy, as the offset is the same for all */
964 for (i = 0; i < timercnt; ++i)
965 ((WT)timers [i])->at += rt_now - mn_now;
966 }
967
968 mn_now = rt_now; 2957 mn_now = ev_rt_now;
969 } 2958 }
970} 2959}
971 2960
972void 2961int
973ev_ref (EV_P)
974{
975 ++activecnt;
976}
977
978void
979ev_unref (EV_P)
980{
981 --activecnt;
982}
983
984static int loop_done;
985
986void
987ev_loop (EV_P_ int flags) 2962ev_run (EV_P_ int flags)
988{ 2963{
989 double block; 2964#if EV_FEATURE_API
990 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 2965 ++loop_depth;
2966#endif
2967
2968 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2969
2970 loop_done = EVBREAK_CANCEL;
2971
2972 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
991 2973
992 do 2974 do
993 { 2975 {
2976#if EV_VERIFY >= 2
2977 ev_verify (EV_A);
2978#endif
2979
2980#ifndef _WIN32
2981 if (expect_false (curpid)) /* penalise the forking check even more */
2982 if (expect_false (getpid () != curpid))
2983 {
2984 curpid = getpid ();
2985 postfork = 1;
2986 }
2987#endif
2988
2989#if EV_FORK_ENABLE
2990 /* we might have forked, so queue fork handlers */
2991 if (expect_false (postfork))
2992 if (forkcnt)
2993 {
2994 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2995 EV_INVOKE_PENDING;
2996 }
2997#endif
2998
2999#if EV_PREPARE_ENABLE
994 /* queue check watchers (and execute them) */ 3000 /* queue prepare watchers (and execute them) */
995 if (expect_false (preparecnt)) 3001 if (expect_false (preparecnt))
996 { 3002 {
997 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3003 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
998 call_pending (EV_A); 3004 EV_INVOKE_PENDING;
999 } 3005 }
3006#endif
3007
3008 if (expect_false (loop_done))
3009 break;
3010
3011 /* we might have forked, so reify kernel state if necessary */
3012 if (expect_false (postfork))
3013 loop_fork (EV_A);
1000 3014
1001 /* update fd-related kernel structures */ 3015 /* update fd-related kernel structures */
1002 fd_reify (EV_A); 3016 fd_reify (EV_A);
1003 3017
1004 /* calculate blocking time */ 3018 /* calculate blocking time */
3019 {
3020 ev_tstamp waittime = 0.;
3021 ev_tstamp sleeptime = 0.;
1005 3022
1006 /* we only need this for !monotonic clockor timers, but as we basically 3023 /* remember old timestamp for io_blocktime calculation */
1007 always have timers, we just calculate it always */ 3024 ev_tstamp prev_mn_now = mn_now;
1008#if EV_USE_MONOTONIC 3025
1009 if (expect_true (have_monotonic)) 3026 /* update time to cancel out callback processing overhead */
1010 time_update_monotonic (EV_A); 3027 time_update (EV_A_ 1e100);
1011 else 3028
1012#endif 3029 /* from now on, we want a pipe-wake-up */
3030 pipe_write_wanted = 1;
3031
3032 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3033
3034 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1013 { 3035 {
1014 rt_now = ev_time ();
1015 mn_now = rt_now;
1016 }
1017
1018 if (flags & EVLOOP_NONBLOCK || idlecnt)
1019 block = 0.;
1020 else
1021 {
1022 block = MAX_BLOCKTIME; 3036 waittime = MAX_BLOCKTIME;
1023 3037
1024 if (timercnt) 3038 if (timercnt)
1025 { 3039 {
1026 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 3040 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1027 if (block > to) block = to; 3041 if (waittime > to) waittime = to;
1028 } 3042 }
1029 3043
3044#if EV_PERIODIC_ENABLE
1030 if (periodiccnt) 3045 if (periodiccnt)
1031 { 3046 {
1032 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 3047 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1033 if (block > to) block = to; 3048 if (waittime > to) waittime = to;
1034 } 3049 }
3050#endif
1035 3051
1036 if (block < 0.) block = 0.; 3052 /* don't let timeouts decrease the waittime below timeout_blocktime */
3053 if (expect_false (waittime < timeout_blocktime))
3054 waittime = timeout_blocktime;
3055
3056 /* at this point, we NEED to wait, so we have to ensure */
3057 /* to pass a minimum nonzero value to the backend */
3058 if (expect_false (waittime < backend_mintime))
3059 waittime = backend_mintime;
3060
3061 /* extra check because io_blocktime is commonly 0 */
3062 if (expect_false (io_blocktime))
3063 {
3064 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3065
3066 if (sleeptime > waittime - backend_mintime)
3067 sleeptime = waittime - backend_mintime;
3068
3069 if (expect_true (sleeptime > 0.))
3070 {
3071 ev_sleep (sleeptime);
3072 waittime -= sleeptime;
3073 }
3074 }
1037 } 3075 }
1038 3076
1039 method_poll (EV_A_ block); 3077#if EV_FEATURE_API
3078 ++loop_count;
3079#endif
3080 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
3081 backend_poll (EV_A_ waittime);
3082 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1040 3083
3084 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3085
3086 if (pipe_write_skipped)
3087 {
3088 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3089 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3090 }
3091
3092
1041 /* update rt_now, do magic */ 3093 /* update ev_rt_now, do magic */
1042 time_update (EV_A); 3094 time_update (EV_A_ waittime + sleeptime);
3095 }
1043 3096
1044 /* queue pending timers and reschedule them */ 3097 /* queue pending timers and reschedule them */
1045 timers_reify (EV_A); /* relative timers called last */ 3098 timers_reify (EV_A); /* relative timers called last */
3099#if EV_PERIODIC_ENABLE
1046 periodics_reify (EV_A); /* absolute timers called first */ 3100 periodics_reify (EV_A); /* absolute timers called first */
3101#endif
1047 3102
3103#if EV_IDLE_ENABLE
1048 /* queue idle watchers unless io or timers are pending */ 3104 /* queue idle watchers unless other events are pending */
1049 if (!pendingcnt) 3105 idle_reify (EV_A);
1050 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 3106#endif
1051 3107
3108#if EV_CHECK_ENABLE
1052 /* queue check watchers, to be executed first */ 3109 /* queue check watchers, to be executed first */
1053 if (checkcnt) 3110 if (expect_false (checkcnt))
1054 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3111 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3112#endif
1055 3113
1056 call_pending (EV_A); 3114 EV_INVOKE_PENDING;
1057 } 3115 }
1058 while (activecnt && !loop_done); 3116 while (expect_true (
3117 activecnt
3118 && !loop_done
3119 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3120 ));
1059 3121
1060 if (loop_done != 2) 3122 if (loop_done == EVBREAK_ONE)
1061 loop_done = 0; 3123 loop_done = EVBREAK_CANCEL;
3124
3125#if EV_FEATURE_API
3126 --loop_depth;
3127#endif
3128
3129 return activecnt;
1062} 3130}
1063 3131
1064void 3132void
1065ev_unloop (EV_P_ int how) 3133ev_break (EV_P_ int how) EV_THROW
1066{ 3134{
1067 loop_done = how; 3135 loop_done = how;
1068} 3136}
1069 3137
3138void
3139ev_ref (EV_P) EV_THROW
3140{
3141 ++activecnt;
3142}
3143
3144void
3145ev_unref (EV_P) EV_THROW
3146{
3147 --activecnt;
3148}
3149
3150void
3151ev_now_update (EV_P) EV_THROW
3152{
3153 time_update (EV_A_ 1e100);
3154}
3155
3156void
3157ev_suspend (EV_P) EV_THROW
3158{
3159 ev_now_update (EV_A);
3160}
3161
3162void
3163ev_resume (EV_P) EV_THROW
3164{
3165 ev_tstamp mn_prev = mn_now;
3166
3167 ev_now_update (EV_A);
3168 timers_reschedule (EV_A_ mn_now - mn_prev);
3169#if EV_PERIODIC_ENABLE
3170 /* TODO: really do this? */
3171 periodics_reschedule (EV_A);
3172#endif
3173}
3174
1070/*****************************************************************************/ 3175/*****************************************************************************/
3176/* singly-linked list management, used when the expected list length is short */
1071 3177
1072inline void 3178inline_size void
1073wlist_add (WL *head, WL elem) 3179wlist_add (WL *head, WL elem)
1074{ 3180{
1075 elem->next = *head; 3181 elem->next = *head;
1076 *head = elem; 3182 *head = elem;
1077} 3183}
1078 3184
1079inline void 3185inline_size void
1080wlist_del (WL *head, WL elem) 3186wlist_del (WL *head, WL elem)
1081{ 3187{
1082 while (*head) 3188 while (*head)
1083 { 3189 {
1084 if (*head == elem) 3190 if (expect_true (*head == elem))
1085 { 3191 {
1086 *head = elem->next; 3192 *head = elem->next;
1087 return; 3193 break;
1088 } 3194 }
1089 3195
1090 head = &(*head)->next; 3196 head = &(*head)->next;
1091 } 3197 }
1092} 3198}
1093 3199
3200/* internal, faster, version of ev_clear_pending */
1094inline void 3201inline_speed void
1095ev_clear_pending (EV_P_ W w) 3202clear_pending (EV_P_ W w)
1096{ 3203{
1097 if (w->pending) 3204 if (w->pending)
1098 { 3205 {
1099 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3206 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1100 w->pending = 0; 3207 w->pending = 0;
1101 } 3208 }
1102} 3209}
1103 3210
3211int
3212ev_clear_pending (EV_P_ void *w) EV_THROW
3213{
3214 W w_ = (W)w;
3215 int pending = w_->pending;
3216
3217 if (expect_true (pending))
3218 {
3219 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3220 p->w = (W)&pending_w;
3221 w_->pending = 0;
3222 return p->events;
3223 }
3224 else
3225 return 0;
3226}
3227
1104inline void 3228inline_size void
3229pri_adjust (EV_P_ W w)
3230{
3231 int pri = ev_priority (w);
3232 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
3233 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
3234 ev_set_priority (w, pri);
3235}
3236
3237inline_speed void
1105ev_start (EV_P_ W w, int active) 3238ev_start (EV_P_ W w, int active)
1106{ 3239{
1107 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 3240 pri_adjust (EV_A_ w);
1108 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1109
1110 w->active = active; 3241 w->active = active;
1111 ev_ref (EV_A); 3242 ev_ref (EV_A);
1112} 3243}
1113 3244
1114inline void 3245inline_size void
1115ev_stop (EV_P_ W w) 3246ev_stop (EV_P_ W w)
1116{ 3247{
1117 ev_unref (EV_A); 3248 ev_unref (EV_A);
1118 w->active = 0; 3249 w->active = 0;
1119} 3250}
1120 3251
1121/*****************************************************************************/ 3252/*****************************************************************************/
1122 3253
1123void 3254void noinline
1124ev_io_start (EV_P_ struct ev_io *w) 3255ev_io_start (EV_P_ ev_io *w) EV_THROW
1125{ 3256{
1126 int fd = w->fd; 3257 int fd = w->fd;
1127 3258
1128 if (ev_is_active (w)) 3259 if (expect_false (ev_is_active (w)))
1129 return; 3260 return;
1130 3261
1131 assert (("ev_io_start called with negative fd", fd >= 0)); 3262 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3263 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3264
3265 EV_FREQUENT_CHECK;
1132 3266
1133 ev_start (EV_A_ (W)w, 1); 3267 ev_start (EV_A_ (W)w, 1);
1134 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 3268 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1135 wlist_add ((WL *)&anfds[fd].head, (WL)w); 3269 wlist_add (&anfds[fd].head, (WL)w);
1136 3270
1137 fd_change (EV_A_ fd); 3271 /* common bug, apparently */
1138} 3272 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
1139 3273
1140void 3274 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3275 w->events &= ~EV__IOFDSET;
3276
3277 EV_FREQUENT_CHECK;
3278}
3279
3280void noinline
1141ev_io_stop (EV_P_ struct ev_io *w) 3281ev_io_stop (EV_P_ ev_io *w) EV_THROW
1142{ 3282{
1143 ev_clear_pending (EV_A_ (W)w); 3283 clear_pending (EV_A_ (W)w);
1144 if (!ev_is_active (w)) 3284 if (expect_false (!ev_is_active (w)))
1145 return; 3285 return;
1146 3286
3287 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3288
3289 EV_FREQUENT_CHECK;
3290
1147 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 3291 wlist_del (&anfds[w->fd].head, (WL)w);
1148 ev_stop (EV_A_ (W)w); 3292 ev_stop (EV_A_ (W)w);
1149 3293
1150 fd_change (EV_A_ w->fd); 3294 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
1151}
1152 3295
1153void 3296 EV_FREQUENT_CHECK;
3297}
3298
3299void noinline
1154ev_timer_start (EV_P_ struct ev_timer *w) 3300ev_timer_start (EV_P_ ev_timer *w) EV_THROW
1155{ 3301{
1156 if (ev_is_active (w)) 3302 if (expect_false (ev_is_active (w)))
1157 return; 3303 return;
1158 3304
1159 ((WT)w)->at += mn_now; 3305 ev_at (w) += mn_now;
1160 3306
1161 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3307 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1162 3308
3309 EV_FREQUENT_CHECK;
3310
3311 ++timercnt;
1163 ev_start (EV_A_ (W)w, ++timercnt); 3312 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1164 array_needsize (timers, timermax, timercnt, ); 3313 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1165 timers [timercnt - 1] = w; 3314 ANHE_w (timers [ev_active (w)]) = (WT)w;
1166 upheap ((WT *)timers, timercnt - 1); 3315 ANHE_at_cache (timers [ev_active (w)]);
3316 upheap (timers, ev_active (w));
1167 3317
3318 EV_FREQUENT_CHECK;
3319
1168 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 3320 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1169} 3321}
1170 3322
1171void 3323void noinline
1172ev_timer_stop (EV_P_ struct ev_timer *w) 3324ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
1173{ 3325{
1174 ev_clear_pending (EV_A_ (W)w); 3326 clear_pending (EV_A_ (W)w);
1175 if (!ev_is_active (w)) 3327 if (expect_false (!ev_is_active (w)))
1176 return; 3328 return;
1177 3329
3330 EV_FREQUENT_CHECK;
3331
3332 {
3333 int active = ev_active (w);
3334
1178 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 3335 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1179 3336
1180 if (((W)w)->active < timercnt--) 3337 --timercnt;
3338
3339 if (expect_true (active < timercnt + HEAP0))
1181 { 3340 {
1182 timers [((W)w)->active - 1] = timers [timercnt]; 3341 timers [active] = timers [timercnt + HEAP0];
1183 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 3342 adjustheap (timers, timercnt, active);
1184 } 3343 }
3344 }
1185 3345
1186 ((WT)w)->at = w->repeat; 3346 ev_at (w) -= mn_now;
1187 3347
1188 ev_stop (EV_A_ (W)w); 3348 ev_stop (EV_A_ (W)w);
1189}
1190 3349
1191void 3350 EV_FREQUENT_CHECK;
3351}
3352
3353void noinline
1192ev_timer_again (EV_P_ struct ev_timer *w) 3354ev_timer_again (EV_P_ ev_timer *w) EV_THROW
1193{ 3355{
3356 EV_FREQUENT_CHECK;
3357
3358 clear_pending (EV_A_ (W)w);
3359
1194 if (ev_is_active (w)) 3360 if (ev_is_active (w))
1195 { 3361 {
1196 if (w->repeat) 3362 if (w->repeat)
1197 { 3363 {
1198 ((WT)w)->at = mn_now + w->repeat; 3364 ev_at (w) = mn_now + w->repeat;
1199 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 3365 ANHE_at_cache (timers [ev_active (w)]);
3366 adjustheap (timers, timercnt, ev_active (w));
1200 } 3367 }
1201 else 3368 else
1202 ev_timer_stop (EV_A_ w); 3369 ev_timer_stop (EV_A_ w);
1203 } 3370 }
1204 else if (w->repeat) 3371 else if (w->repeat)
3372 {
3373 ev_at (w) = w->repeat;
1205 ev_timer_start (EV_A_ w); 3374 ev_timer_start (EV_A_ w);
1206} 3375 }
1207 3376
1208void 3377 EV_FREQUENT_CHECK;
3378}
3379
3380ev_tstamp
3381ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3382{
3383 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3384}
3385
3386#if EV_PERIODIC_ENABLE
3387void noinline
1209ev_periodic_start (EV_P_ struct ev_periodic *w) 3388ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
1210{ 3389{
1211 if (ev_is_active (w)) 3390 if (expect_false (ev_is_active (w)))
1212 return; 3391 return;
1213 3392
3393 if (w->reschedule_cb)
3394 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3395 else if (w->interval)
3396 {
1214 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3397 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
3398 periodic_recalc (EV_A_ w);
3399 }
3400 else
3401 ev_at (w) = w->offset;
1215 3402
1216 /* this formula differs from the one in periodic_reify because we do not always round up */ 3403 EV_FREQUENT_CHECK;
1217 if (w->interval)
1218 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1219 3404
3405 ++periodiccnt;
1220 ev_start (EV_A_ (W)w, ++periodiccnt); 3406 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1221 array_needsize (periodics, periodicmax, periodiccnt, ); 3407 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1222 periodics [periodiccnt - 1] = w; 3408 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1223 upheap ((WT *)periodics, periodiccnt - 1); 3409 ANHE_at_cache (periodics [ev_active (w)]);
3410 upheap (periodics, ev_active (w));
1224 3411
3412 EV_FREQUENT_CHECK;
3413
1225 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 3414 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1226} 3415}
1227 3416
1228void 3417void noinline
1229ev_periodic_stop (EV_P_ struct ev_periodic *w) 3418ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
1230{ 3419{
1231 ev_clear_pending (EV_A_ (W)w); 3420 clear_pending (EV_A_ (W)w);
1232 if (!ev_is_active (w)) 3421 if (expect_false (!ev_is_active (w)))
1233 return; 3422 return;
1234 3423
3424 EV_FREQUENT_CHECK;
3425
3426 {
3427 int active = ev_active (w);
3428
1235 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 3429 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1236 3430
1237 if (((W)w)->active < periodiccnt--) 3431 --periodiccnt;
3432
3433 if (expect_true (active < periodiccnt + HEAP0))
1238 { 3434 {
1239 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 3435 periodics [active] = periodics [periodiccnt + HEAP0];
1240 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 3436 adjustheap (periodics, periodiccnt, active);
1241 } 3437 }
3438 }
1242 3439
1243 ev_stop (EV_A_ (W)w); 3440 ev_stop (EV_A_ (W)w);
1244}
1245 3441
1246void 3442 EV_FREQUENT_CHECK;
1247ev_idle_start (EV_P_ struct ev_idle *w)
1248{
1249 if (ev_is_active (w))
1250 return;
1251
1252 ev_start (EV_A_ (W)w, ++idlecnt);
1253 array_needsize (idles, idlemax, idlecnt, );
1254 idles [idlecnt - 1] = w;
1255} 3443}
1256 3444
1257void 3445void noinline
1258ev_idle_stop (EV_P_ struct ev_idle *w) 3446ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
1259{ 3447{
1260 ev_clear_pending (EV_A_ (W)w); 3448 /* TODO: use adjustheap and recalculation */
1261 if (ev_is_active (w))
1262 return;
1263
1264 idles [((W)w)->active - 1] = idles [--idlecnt];
1265 ev_stop (EV_A_ (W)w); 3449 ev_periodic_stop (EV_A_ w);
3450 ev_periodic_start (EV_A_ w);
1266} 3451}
1267 3452#endif
1268void
1269ev_prepare_start (EV_P_ struct ev_prepare *w)
1270{
1271 if (ev_is_active (w))
1272 return;
1273
1274 ev_start (EV_A_ (W)w, ++preparecnt);
1275 array_needsize (prepares, preparemax, preparecnt, );
1276 prepares [preparecnt - 1] = w;
1277}
1278
1279void
1280ev_prepare_stop (EV_P_ struct ev_prepare *w)
1281{
1282 ev_clear_pending (EV_A_ (W)w);
1283 if (ev_is_active (w))
1284 return;
1285
1286 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1287 ev_stop (EV_A_ (W)w);
1288}
1289
1290void
1291ev_check_start (EV_P_ struct ev_check *w)
1292{
1293 if (ev_is_active (w))
1294 return;
1295
1296 ev_start (EV_A_ (W)w, ++checkcnt);
1297 array_needsize (checks, checkmax, checkcnt, );
1298 checks [checkcnt - 1] = w;
1299}
1300
1301void
1302ev_check_stop (EV_P_ struct ev_check *w)
1303{
1304 ev_clear_pending (EV_A_ (W)w);
1305 if (ev_is_active (w))
1306 return;
1307
1308 checks [((W)w)->active - 1] = checks [--checkcnt];
1309 ev_stop (EV_A_ (W)w);
1310}
1311 3453
1312#ifndef SA_RESTART 3454#ifndef SA_RESTART
1313# define SA_RESTART 0 3455# define SA_RESTART 0
1314#endif 3456#endif
1315 3457
3458#if EV_SIGNAL_ENABLE
3459
3460void noinline
3461ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3462{
3463 if (expect_false (ev_is_active (w)))
3464 return;
3465
3466 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3467
3468#if EV_MULTIPLICITY
3469 assert (("libev: a signal must not be attached to two different loops",
3470 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3471
3472 signals [w->signum - 1].loop = EV_A;
3473#endif
3474
3475 EV_FREQUENT_CHECK;
3476
3477#if EV_USE_SIGNALFD
3478 if (sigfd == -2)
3479 {
3480 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
3481 if (sigfd < 0 && errno == EINVAL)
3482 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
3483
3484 if (sigfd >= 0)
3485 {
3486 fd_intern (sigfd); /* doing it twice will not hurt */
3487
3488 sigemptyset (&sigfd_set);
3489
3490 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3491 ev_set_priority (&sigfd_w, EV_MAXPRI);
3492 ev_io_start (EV_A_ &sigfd_w);
3493 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3494 }
3495 }
3496
3497 if (sigfd >= 0)
3498 {
3499 /* TODO: check .head */
3500 sigaddset (&sigfd_set, w->signum);
3501 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3502
3503 signalfd (sigfd, &sigfd_set, 0);
3504 }
3505#endif
3506
3507 ev_start (EV_A_ (W)w, 1);
3508 wlist_add (&signals [w->signum - 1].head, (WL)w);
3509
3510 if (!((WL)w)->next)
3511# if EV_USE_SIGNALFD
3512 if (sigfd < 0) /*TODO*/
3513# endif
3514 {
3515# ifdef _WIN32
3516 evpipe_init (EV_A);
3517
3518 signal (w->signum, ev_sighandler);
3519# else
3520 struct sigaction sa;
3521
3522 evpipe_init (EV_A);
3523
3524 sa.sa_handler = ev_sighandler;
3525 sigfillset (&sa.sa_mask);
3526 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
3527 sigaction (w->signum, &sa, 0);
3528
3529 if (origflags & EVFLAG_NOSIGMASK)
3530 {
3531 sigemptyset (&sa.sa_mask);
3532 sigaddset (&sa.sa_mask, w->signum);
3533 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3534 }
3535#endif
3536 }
3537
3538 EV_FREQUENT_CHECK;
3539}
3540
3541void noinline
3542ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3543{
3544 clear_pending (EV_A_ (W)w);
3545 if (expect_false (!ev_is_active (w)))
3546 return;
3547
3548 EV_FREQUENT_CHECK;
3549
3550 wlist_del (&signals [w->signum - 1].head, (WL)w);
3551 ev_stop (EV_A_ (W)w);
3552
3553 if (!signals [w->signum - 1].head)
3554 {
3555#if EV_MULTIPLICITY
3556 signals [w->signum - 1].loop = 0; /* unattach from signal */
3557#endif
3558#if EV_USE_SIGNALFD
3559 if (sigfd >= 0)
3560 {
3561 sigset_t ss;
3562
3563 sigemptyset (&ss);
3564 sigaddset (&ss, w->signum);
3565 sigdelset (&sigfd_set, w->signum);
3566
3567 signalfd (sigfd, &sigfd_set, 0);
3568 sigprocmask (SIG_UNBLOCK, &ss, 0);
3569 }
3570 else
3571#endif
3572 signal (w->signum, SIG_DFL);
3573 }
3574
3575 EV_FREQUENT_CHECK;
3576}
3577
3578#endif
3579
3580#if EV_CHILD_ENABLE
3581
1316void 3582void
1317ev_signal_start (EV_P_ struct ev_signal *w) 3583ev_child_start (EV_P_ ev_child *w) EV_THROW
1318{ 3584{
1319#if EV_MULTIPLICITY 3585#if EV_MULTIPLICITY
1320 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 3586 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1321#endif 3587#endif
1322 if (ev_is_active (w)) 3588 if (expect_false (ev_is_active (w)))
1323 return; 3589 return;
1324 3590
1325 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3591 EV_FREQUENT_CHECK;
1326 3592
1327 ev_start (EV_A_ (W)w, 1); 3593 ev_start (EV_A_ (W)w, 1);
1328 array_needsize (signals, signalmax, w->signum, signals_init); 3594 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1329 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1330 3595
1331 if (!((WL)w)->next) 3596 EV_FREQUENT_CHECK;
3597}
3598
3599void
3600ev_child_stop (EV_P_ ev_child *w) EV_THROW
3601{
3602 clear_pending (EV_A_ (W)w);
3603 if (expect_false (!ev_is_active (w)))
3604 return;
3605
3606 EV_FREQUENT_CHECK;
3607
3608 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
3609 ev_stop (EV_A_ (W)w);
3610
3611 EV_FREQUENT_CHECK;
3612}
3613
3614#endif
3615
3616#if EV_STAT_ENABLE
3617
3618# ifdef _WIN32
3619# undef lstat
3620# define lstat(a,b) _stati64 (a,b)
3621# endif
3622
3623#define DEF_STAT_INTERVAL 5.0074891
3624#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3625#define MIN_STAT_INTERVAL 0.1074891
3626
3627static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3628
3629#if EV_USE_INOTIFY
3630
3631/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3632# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3633
3634static void noinline
3635infy_add (EV_P_ ev_stat *w)
3636{
3637 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);
3638
3639 if (w->wd >= 0)
3640 {
3641 struct statfs sfs;
3642
3643 /* now local changes will be tracked by inotify, but remote changes won't */
3644 /* unless the filesystem is known to be local, we therefore still poll */
3645 /* also do poll on <2.6.25, but with normal frequency */
3646
3647 if (!fs_2625)
3648 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3649 else if (!statfs (w->path, &sfs)
3650 && (sfs.f_type == 0x1373 /* devfs */
3651 || sfs.f_type == 0xEF53 /* ext2/3 */
3652 || sfs.f_type == 0x3153464a /* jfs */
3653 || sfs.f_type == 0x52654973 /* reiser3 */
3654 || sfs.f_type == 0x01021994 /* tempfs */
3655 || sfs.f_type == 0x58465342 /* xfs */))
3656 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3657 else
3658 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1332 { 3659 }
1333#if WIN32 3660 else
1334 signal (w->signum, sighandler); 3661 {
3662 /* can't use inotify, continue to stat */
3663 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3664
3665 /* if path is not there, monitor some parent directory for speedup hints */
3666 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3667 /* but an efficiency issue only */
3668 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
3669 {
3670 char path [4096];
3671 strcpy (path, w->path);
3672
3673 do
3674 {
3675 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
3676 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
3677
3678 char *pend = strrchr (path, '/');
3679
3680 if (!pend || pend == path)
3681 break;
3682
3683 *pend = 0;
3684 w->wd = inotify_add_watch (fs_fd, path, mask);
3685 }
3686 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3687 }
3688 }
3689
3690 if (w->wd >= 0)
3691 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3692
3693 /* now re-arm timer, if required */
3694 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3695 ev_timer_again (EV_A_ &w->timer);
3696 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3697}
3698
3699static void noinline
3700infy_del (EV_P_ ev_stat *w)
3701{
3702 int slot;
3703 int wd = w->wd;
3704
3705 if (wd < 0)
3706 return;
3707
3708 w->wd = -2;
3709 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
3710 wlist_del (&fs_hash [slot].head, (WL)w);
3711
3712 /* remove this watcher, if others are watching it, they will rearm */
3713 inotify_rm_watch (fs_fd, wd);
3714}
3715
3716static void noinline
3717infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3718{
3719 if (slot < 0)
3720 /* overflow, need to check for all hash slots */
3721 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3722 infy_wd (EV_A_ slot, wd, ev);
3723 else
3724 {
3725 WL w_;
3726
3727 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
3728 {
3729 ev_stat *w = (ev_stat *)w_;
3730 w_ = w_->next; /* lets us remove this watcher and all before it */
3731
3732 if (w->wd == wd || wd == -1)
3733 {
3734 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
3735 {
3736 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3737 w->wd = -1;
3738 infy_add (EV_A_ w); /* re-add, no matter what */
3739 }
3740
3741 stat_timer_cb (EV_A_ &w->timer, 0);
3742 }
3743 }
3744 }
3745}
3746
3747static void
3748infy_cb (EV_P_ ev_io *w, int revents)
3749{
3750 char buf [EV_INOTIFY_BUFSIZE];
3751 int ofs;
3752 int len = read (fs_fd, buf, sizeof (buf));
3753
3754 for (ofs = 0; ofs < len; )
3755 {
3756 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
3757 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3758 ofs += sizeof (struct inotify_event) + ev->len;
3759 }
3760}
3761
3762inline_size void ecb_cold
3763ev_check_2625 (EV_P)
3764{
3765 /* kernels < 2.6.25 are borked
3766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3767 */
3768 if (ev_linux_version () < 0x020619)
3769 return;
3770
3771 fs_2625 = 1;
3772}
3773
3774inline_size int
3775infy_newfd (void)
3776{
3777#if defined IN_CLOEXEC && defined IN_NONBLOCK
3778 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3779 if (fd >= 0)
3780 return fd;
3781#endif
3782 return inotify_init ();
3783}
3784
3785inline_size void
3786infy_init (EV_P)
3787{
3788 if (fs_fd != -2)
3789 return;
3790
3791 fs_fd = -1;
3792
3793 ev_check_2625 (EV_A);
3794
3795 fs_fd = infy_newfd ();
3796
3797 if (fs_fd >= 0)
3798 {
3799 fd_intern (fs_fd);
3800 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3801 ev_set_priority (&fs_w, EV_MAXPRI);
3802 ev_io_start (EV_A_ &fs_w);
3803 ev_unref (EV_A);
3804 }
3805}
3806
3807inline_size void
3808infy_fork (EV_P)
3809{
3810 int slot;
3811
3812 if (fs_fd < 0)
3813 return;
3814
3815 ev_ref (EV_A);
3816 ev_io_stop (EV_A_ &fs_w);
3817 close (fs_fd);
3818 fs_fd = infy_newfd ();
3819
3820 if (fs_fd >= 0)
3821 {
3822 fd_intern (fs_fd);
3823 ev_io_set (&fs_w, fs_fd, EV_READ);
3824 ev_io_start (EV_A_ &fs_w);
3825 ev_unref (EV_A);
3826 }
3827
3828 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3829 {
3830 WL w_ = fs_hash [slot].head;
3831 fs_hash [slot].head = 0;
3832
3833 while (w_)
3834 {
3835 ev_stat *w = (ev_stat *)w_;
3836 w_ = w_->next; /* lets us add this watcher */
3837
3838 w->wd = -1;
3839
3840 if (fs_fd >= 0)
3841 infy_add (EV_A_ w); /* re-add, no matter what */
3842 else
3843 {
3844 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3845 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3846 ev_timer_again (EV_A_ &w->timer);
3847 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3848 }
3849 }
3850 }
3851}
3852
3853#endif
3854
3855#ifdef _WIN32
3856# define EV_LSTAT(p,b) _stati64 (p, b)
1335#else 3857#else
1336 struct sigaction sa; 3858# define EV_LSTAT(p,b) lstat (p, b)
1337 sa.sa_handler = sighandler;
1338 sigfillset (&sa.sa_mask);
1339 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1340 sigaction (w->signum, &sa, 0);
1341#endif 3859#endif
1342 }
1343}
1344 3860
1345void 3861void
1346ev_signal_stop (EV_P_ struct ev_signal *w) 3862ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
1347{ 3863{
1348 ev_clear_pending (EV_A_ (W)w); 3864 if (lstat (w->path, &w->attr) < 0)
1349 if (!ev_is_active (w)) 3865 w->attr.st_nlink = 0;
3866 else if (!w->attr.st_nlink)
3867 w->attr.st_nlink = 1;
3868}
3869
3870static void noinline
3871stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3872{
3873 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3874
3875 ev_statdata prev = w->attr;
3876 ev_stat_stat (EV_A_ w);
3877
3878 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3879 if (
3880 prev.st_dev != w->attr.st_dev
3881 || prev.st_ino != w->attr.st_ino
3882 || prev.st_mode != w->attr.st_mode
3883 || prev.st_nlink != w->attr.st_nlink
3884 || prev.st_uid != w->attr.st_uid
3885 || prev.st_gid != w->attr.st_gid
3886 || prev.st_rdev != w->attr.st_rdev
3887 || prev.st_size != w->attr.st_size
3888 || prev.st_atime != w->attr.st_atime
3889 || prev.st_mtime != w->attr.st_mtime
3890 || prev.st_ctime != w->attr.st_ctime
3891 ) {
3892 /* we only update w->prev on actual differences */
3893 /* in case we test more often than invoke the callback, */
3894 /* to ensure that prev is always different to attr */
3895 w->prev = prev;
3896
3897 #if EV_USE_INOTIFY
3898 if (fs_fd >= 0)
3899 {
3900 infy_del (EV_A_ w);
3901 infy_add (EV_A_ w);
3902 ev_stat_stat (EV_A_ w); /* avoid race... */
3903 }
3904 #endif
3905
3906 ev_feed_event (EV_A_ w, EV_STAT);
3907 }
3908}
3909
3910void
3911ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3912{
3913 if (expect_false (ev_is_active (w)))
1350 return; 3914 return;
1351 3915
1352 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 3916 ev_stat_stat (EV_A_ w);
3917
3918 if (w->interval < MIN_STAT_INTERVAL && w->interval)
3919 w->interval = MIN_STAT_INTERVAL;
3920
3921 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
3922 ev_set_priority (&w->timer, ev_priority (w));
3923
3924#if EV_USE_INOTIFY
3925 infy_init (EV_A);
3926
3927 if (fs_fd >= 0)
3928 infy_add (EV_A_ w);
3929 else
3930#endif
3931 {
3932 ev_timer_again (EV_A_ &w->timer);
3933 ev_unref (EV_A);
3934 }
3935
3936 ev_start (EV_A_ (W)w, 1);
3937
3938 EV_FREQUENT_CHECK;
3939}
3940
3941void
3942ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3943{
3944 clear_pending (EV_A_ (W)w);
3945 if (expect_false (!ev_is_active (w)))
3946 return;
3947
3948 EV_FREQUENT_CHECK;
3949
3950#if EV_USE_INOTIFY
3951 infy_del (EV_A_ w);
3952#endif
3953
3954 if (ev_is_active (&w->timer))
3955 {
3956 ev_ref (EV_A);
3957 ev_timer_stop (EV_A_ &w->timer);
3958 }
3959
1353 ev_stop (EV_A_ (W)w); 3960 ev_stop (EV_A_ (W)w);
1354 3961
1355 if (!signals [w->signum - 1].head) 3962 EV_FREQUENT_CHECK;
1356 signal (w->signum, SIG_DFL);
1357} 3963}
3964#endif
1358 3965
3966#if EV_IDLE_ENABLE
1359void 3967void
1360ev_child_start (EV_P_ struct ev_child *w) 3968ev_idle_start (EV_P_ ev_idle *w) EV_THROW
1361{ 3969{
1362#if EV_MULTIPLICITY
1363 assert (("child watchers are only supported in the default loop", loop == default_loop));
1364#endif
1365 if (ev_is_active (w)) 3970 if (expect_false (ev_is_active (w)))
1366 return; 3971 return;
1367 3972
3973 pri_adjust (EV_A_ (W)w);
3974
3975 EV_FREQUENT_CHECK;
3976
3977 {
3978 int active = ++idlecnt [ABSPRI (w)];
3979
3980 ++idleall;
3981 ev_start (EV_A_ (W)w, active);
3982
3983 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
3984 idles [ABSPRI (w)][active - 1] = w;
3985 }
3986
3987 EV_FREQUENT_CHECK;
3988}
3989
3990void
3991ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3992{
3993 clear_pending (EV_A_ (W)w);
3994 if (expect_false (!ev_is_active (w)))
3995 return;
3996
3997 EV_FREQUENT_CHECK;
3998
3999 {
4000 int active = ev_active (w);
4001
4002 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
4003 ev_active (idles [ABSPRI (w)][active - 1]) = active;
4004
4005 ev_stop (EV_A_ (W)w);
4006 --idleall;
4007 }
4008
4009 EV_FREQUENT_CHECK;
4010}
4011#endif
4012
4013#if EV_PREPARE_ENABLE
4014void
4015ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
4016{
4017 if (expect_false (ev_is_active (w)))
4018 return;
4019
4020 EV_FREQUENT_CHECK;
4021
4022 ev_start (EV_A_ (W)w, ++preparecnt);
4023 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
4024 prepares [preparecnt - 1] = w;
4025
4026 EV_FREQUENT_CHECK;
4027}
4028
4029void
4030ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
4031{
4032 clear_pending (EV_A_ (W)w);
4033 if (expect_false (!ev_is_active (w)))
4034 return;
4035
4036 EV_FREQUENT_CHECK;
4037
4038 {
4039 int active = ev_active (w);
4040
4041 prepares [active - 1] = prepares [--preparecnt];
4042 ev_active (prepares [active - 1]) = active;
4043 }
4044
4045 ev_stop (EV_A_ (W)w);
4046
4047 EV_FREQUENT_CHECK;
4048}
4049#endif
4050
4051#if EV_CHECK_ENABLE
4052void
4053ev_check_start (EV_P_ ev_check *w) EV_THROW
4054{
4055 if (expect_false (ev_is_active (w)))
4056 return;
4057
4058 EV_FREQUENT_CHECK;
4059
4060 ev_start (EV_A_ (W)w, ++checkcnt);
4061 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
4062 checks [checkcnt - 1] = w;
4063
4064 EV_FREQUENT_CHECK;
4065}
4066
4067void
4068ev_check_stop (EV_P_ ev_check *w) EV_THROW
4069{
4070 clear_pending (EV_A_ (W)w);
4071 if (expect_false (!ev_is_active (w)))
4072 return;
4073
4074 EV_FREQUENT_CHECK;
4075
4076 {
4077 int active = ev_active (w);
4078
4079 checks [active - 1] = checks [--checkcnt];
4080 ev_active (checks [active - 1]) = active;
4081 }
4082
4083 ev_stop (EV_A_ (W)w);
4084
4085 EV_FREQUENT_CHECK;
4086}
4087#endif
4088
4089#if EV_EMBED_ENABLE
4090void noinline
4091ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4092{
4093 ev_run (w->other, EVRUN_NOWAIT);
4094}
4095
4096static void
4097embed_io_cb (EV_P_ ev_io *io, int revents)
4098{
4099 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
4100
4101 if (ev_cb (w))
4102 ev_feed_event (EV_A_ (W)w, EV_EMBED);
4103 else
4104 ev_run (w->other, EVRUN_NOWAIT);
4105}
4106
4107static void
4108embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
4109{
4110 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
4111
4112 {
4113 EV_P = w->other;
4114
4115 while (fdchangecnt)
4116 {
4117 fd_reify (EV_A);
4118 ev_run (EV_A_ EVRUN_NOWAIT);
4119 }
4120 }
4121}
4122
4123static void
4124embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4125{
4126 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4127
4128 ev_embed_stop (EV_A_ w);
4129
4130 {
4131 EV_P = w->other;
4132
4133 ev_loop_fork (EV_A);
4134 ev_run (EV_A_ EVRUN_NOWAIT);
4135 }
4136
4137 ev_embed_start (EV_A_ w);
4138}
4139
4140#if 0
4141static void
4142embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4143{
4144 ev_idle_stop (EV_A_ idle);
4145}
4146#endif
4147
4148void
4149ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4150{
4151 if (expect_false (ev_is_active (w)))
4152 return;
4153
4154 {
4155 EV_P = w->other;
4156 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
4157 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
4158 }
4159
4160 EV_FREQUENT_CHECK;
4161
4162 ev_set_priority (&w->io, ev_priority (w));
4163 ev_io_start (EV_A_ &w->io);
4164
4165 ev_prepare_init (&w->prepare, embed_prepare_cb);
4166 ev_set_priority (&w->prepare, EV_MINPRI);
4167 ev_prepare_start (EV_A_ &w->prepare);
4168
4169 ev_fork_init (&w->fork, embed_fork_cb);
4170 ev_fork_start (EV_A_ &w->fork);
4171
4172 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4173
1368 ev_start (EV_A_ (W)w, 1); 4174 ev_start (EV_A_ (W)w, 1);
1369 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 4175
4176 EV_FREQUENT_CHECK;
1370} 4177}
1371 4178
1372void 4179void
1373ev_child_stop (EV_P_ struct ev_child *w) 4180ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
1374{ 4181{
1375 ev_clear_pending (EV_A_ (W)w); 4182 clear_pending (EV_A_ (W)w);
1376 if (ev_is_active (w)) 4183 if (expect_false (!ev_is_active (w)))
1377 return; 4184 return;
1378 4185
1379 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 4186 EV_FREQUENT_CHECK;
4187
4188 ev_io_stop (EV_A_ &w->io);
4189 ev_prepare_stop (EV_A_ &w->prepare);
4190 ev_fork_stop (EV_A_ &w->fork);
4191
1380 ev_stop (EV_A_ (W)w); 4192 ev_stop (EV_A_ (W)w);
4193
4194 EV_FREQUENT_CHECK;
1381} 4195}
4196#endif
4197
4198#if EV_FORK_ENABLE
4199void
4200ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4201{
4202 if (expect_false (ev_is_active (w)))
4203 return;
4204
4205 EV_FREQUENT_CHECK;
4206
4207 ev_start (EV_A_ (W)w, ++forkcnt);
4208 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
4209 forks [forkcnt - 1] = w;
4210
4211 EV_FREQUENT_CHECK;
4212}
4213
4214void
4215ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4216{
4217 clear_pending (EV_A_ (W)w);
4218 if (expect_false (!ev_is_active (w)))
4219 return;
4220
4221 EV_FREQUENT_CHECK;
4222
4223 {
4224 int active = ev_active (w);
4225
4226 forks [active - 1] = forks [--forkcnt];
4227 ev_active (forks [active - 1]) = active;
4228 }
4229
4230 ev_stop (EV_A_ (W)w);
4231
4232 EV_FREQUENT_CHECK;
4233}
4234#endif
4235
4236#if EV_CLEANUP_ENABLE
4237void
4238ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4239{
4240 if (expect_false (ev_is_active (w)))
4241 return;
4242
4243 EV_FREQUENT_CHECK;
4244
4245 ev_start (EV_A_ (W)w, ++cleanupcnt);
4246 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4247 cleanups [cleanupcnt - 1] = w;
4248
4249 /* cleanup watchers should never keep a refcount on the loop */
4250 ev_unref (EV_A);
4251 EV_FREQUENT_CHECK;
4252}
4253
4254void
4255ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4256{
4257 clear_pending (EV_A_ (W)w);
4258 if (expect_false (!ev_is_active (w)))
4259 return;
4260
4261 EV_FREQUENT_CHECK;
4262 ev_ref (EV_A);
4263
4264 {
4265 int active = ev_active (w);
4266
4267 cleanups [active - 1] = cleanups [--cleanupcnt];
4268 ev_active (cleanups [active - 1]) = active;
4269 }
4270
4271 ev_stop (EV_A_ (W)w);
4272
4273 EV_FREQUENT_CHECK;
4274}
4275#endif
4276
4277#if EV_ASYNC_ENABLE
4278void
4279ev_async_start (EV_P_ ev_async *w) EV_THROW
4280{
4281 if (expect_false (ev_is_active (w)))
4282 return;
4283
4284 w->sent = 0;
4285
4286 evpipe_init (EV_A);
4287
4288 EV_FREQUENT_CHECK;
4289
4290 ev_start (EV_A_ (W)w, ++asynccnt);
4291 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
4292 asyncs [asynccnt - 1] = w;
4293
4294 EV_FREQUENT_CHECK;
4295}
4296
4297void
4298ev_async_stop (EV_P_ ev_async *w) EV_THROW
4299{
4300 clear_pending (EV_A_ (W)w);
4301 if (expect_false (!ev_is_active (w)))
4302 return;
4303
4304 EV_FREQUENT_CHECK;
4305
4306 {
4307 int active = ev_active (w);
4308
4309 asyncs [active - 1] = asyncs [--asynccnt];
4310 ev_active (asyncs [active - 1]) = active;
4311 }
4312
4313 ev_stop (EV_A_ (W)w);
4314
4315 EV_FREQUENT_CHECK;
4316}
4317
4318void
4319ev_async_send (EV_P_ ev_async *w) EV_THROW
4320{
4321 w->sent = 1;
4322 evpipe_write (EV_A_ &async_pending);
4323}
4324#endif
1382 4325
1383/*****************************************************************************/ 4326/*****************************************************************************/
1384 4327
1385struct ev_once 4328struct ev_once
1386{ 4329{
1387 struct ev_io io; 4330 ev_io io;
1388 struct ev_timer to; 4331 ev_timer to;
1389 void (*cb)(int revents, void *arg); 4332 void (*cb)(int revents, void *arg);
1390 void *arg; 4333 void *arg;
1391}; 4334};
1392 4335
1393static void 4336static void
1394once_cb (EV_P_ struct ev_once *once, int revents) 4337once_cb (EV_P_ struct ev_once *once, int revents)
1395{ 4338{
1396 void (*cb)(int revents, void *arg) = once->cb; 4339 void (*cb)(int revents, void *arg) = once->cb;
1397 void *arg = once->arg; 4340 void *arg = once->arg;
1398 4341
1399 ev_io_stop (EV_A_ &once->io); 4342 ev_io_stop (EV_A_ &once->io);
1400 ev_timer_stop (EV_A_ &once->to); 4343 ev_timer_stop (EV_A_ &once->to);
1401 free (once); 4344 ev_free (once);
1402 4345
1403 cb (revents, arg); 4346 cb (revents, arg);
1404} 4347}
1405 4348
1406static void 4349static void
1407once_cb_io (EV_P_ struct ev_io *w, int revents) 4350once_cb_io (EV_P_ ev_io *w, int revents)
1408{ 4351{
1409 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 4352 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
4353
4354 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
1410} 4355}
1411 4356
1412static void 4357static void
1413once_cb_to (EV_P_ struct ev_timer *w, int revents) 4358once_cb_to (EV_P_ ev_timer *w, int revents)
1414{ 4359{
1415 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 4360 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
4361
4362 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
1416} 4363}
1417 4364
1418void 4365void
1419ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4366ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
1420{ 4367{
1421 struct ev_once *once = malloc (sizeof (struct ev_once)); 4368 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1422 4369
1423 if (!once) 4370 if (expect_false (!once))
4371 {
1424 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4372 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
1425 else 4373 return;
1426 { 4374 }
4375
1427 once->cb = cb; 4376 once->cb = cb;
1428 once->arg = arg; 4377 once->arg = arg;
1429 4378
1430 ev_watcher_init (&once->io, once_cb_io); 4379 ev_init (&once->io, once_cb_io);
1431 if (fd >= 0) 4380 if (fd >= 0)
4381 {
4382 ev_io_set (&once->io, fd, events);
4383 ev_io_start (EV_A_ &once->io);
4384 }
4385
4386 ev_init (&once->to, once_cb_to);
4387 if (timeout >= 0.)
4388 {
4389 ev_timer_set (&once->to, timeout, 0.);
4390 ev_timer_start (EV_A_ &once->to);
4391 }
4392}
4393
4394/*****************************************************************************/
4395
4396#if EV_WALK_ENABLE
4397void ecb_cold
4398ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4399{
4400 int i, j;
4401 ev_watcher_list *wl, *wn;
4402
4403 if (types & (EV_IO | EV_EMBED))
4404 for (i = 0; i < anfdmax; ++i)
4405 for (wl = anfds [i].head; wl; )
1432 { 4406 {
1433 ev_io_set (&once->io, fd, events); 4407 wn = wl->next;
1434 ev_io_start (EV_A_ &once->io); 4408
4409#if EV_EMBED_ENABLE
4410 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4411 {
4412 if (types & EV_EMBED)
4413 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4414 }
4415 else
4416#endif
4417#if EV_USE_INOTIFY
4418 if (ev_cb ((ev_io *)wl) == infy_cb)
4419 ;
4420 else
4421#endif
4422 if ((ev_io *)wl != &pipe_w)
4423 if (types & EV_IO)
4424 cb (EV_A_ EV_IO, wl);
4425
4426 wl = wn;
1435 } 4427 }
1436 4428
1437 ev_watcher_init (&once->to, once_cb_to); 4429 if (types & (EV_TIMER | EV_STAT))
1438 if (timeout >= 0.) 4430 for (i = timercnt + HEAP0; i-- > HEAP0; )
4431#if EV_STAT_ENABLE
4432 /*TODO: timer is not always active*/
4433 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
1439 { 4434 {
1440 ev_timer_set (&once->to, timeout, 0.); 4435 if (types & EV_STAT)
1441 ev_timer_start (EV_A_ &once->to); 4436 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
1442 } 4437 }
1443 } 4438 else
1444} 4439#endif
4440 if (types & EV_TIMER)
4441 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
1445 4442
4443#if EV_PERIODIC_ENABLE
4444 if (types & EV_PERIODIC)
4445 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4446 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4447#endif
4448
4449#if EV_IDLE_ENABLE
4450 if (types & EV_IDLE)
4451 for (j = NUMPRI; j--; )
4452 for (i = idlecnt [j]; i--; )
4453 cb (EV_A_ EV_IDLE, idles [j][i]);
4454#endif
4455
4456#if EV_FORK_ENABLE
4457 if (types & EV_FORK)
4458 for (i = forkcnt; i--; )
4459 if (ev_cb (forks [i]) != embed_fork_cb)
4460 cb (EV_A_ EV_FORK, forks [i]);
4461#endif
4462
4463#if EV_ASYNC_ENABLE
4464 if (types & EV_ASYNC)
4465 for (i = asynccnt; i--; )
4466 cb (EV_A_ EV_ASYNC, asyncs [i]);
4467#endif
4468
4469#if EV_PREPARE_ENABLE
4470 if (types & EV_PREPARE)
4471 for (i = preparecnt; i--; )
4472# if EV_EMBED_ENABLE
4473 if (ev_cb (prepares [i]) != embed_prepare_cb)
4474# endif
4475 cb (EV_A_ EV_PREPARE, prepares [i]);
4476#endif
4477
4478#if EV_CHECK_ENABLE
4479 if (types & EV_CHECK)
4480 for (i = checkcnt; i--; )
4481 cb (EV_A_ EV_CHECK, checks [i]);
4482#endif
4483
4484#if EV_SIGNAL_ENABLE
4485 if (types & EV_SIGNAL)
4486 for (i = 0; i < EV_NSIG - 1; ++i)
4487 for (wl = signals [i].head; wl; )
4488 {
4489 wn = wl->next;
4490 cb (EV_A_ EV_SIGNAL, wl);
4491 wl = wn;
4492 }
4493#endif
4494
4495#if EV_CHILD_ENABLE
4496 if (types & EV_CHILD)
4497 for (i = (EV_PID_HASHSIZE); i--; )
4498 for (wl = childs [i]; wl; )
4499 {
4500 wn = wl->next;
4501 cb (EV_A_ EV_CHILD, wl);
4502 wl = wn;
4503 }
4504#endif
4505/* EV_STAT 0x00001000 /* stat data changed */
4506/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4507}
4508#endif
4509
4510#if EV_MULTIPLICITY
4511 #include "ev_wrap.h"
4512#endif
4513

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