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Comparing libev/ev.c (file contents):
Revision 1.218 by root, Sun Mar 23 00:05:03 2008 UTC vs.
Revision 1.388 by root, Fri Jul 29 12:17:26 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus 40/* this big block deduces configuration from config.h */
41extern "C" {
42#endif
43
44#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
46# include EV_CONFIG_H 43# include EV_CONFIG_H
47# else 44# else
48# include "config.h" 45# include "config.h"
49# endif 46# endif
50 47
48#if HAVE_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
67
51# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
52# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
53# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
54# endif 71# endif
55# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
57# endif 74# endif
58# else 75# else
59# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
60# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
61# endif 78# endif
62# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
63# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
64# endif 81# endif
65# endif 82# endif
66 83
84# if HAVE_NANOSLEEP
67# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
68# if HAVE_NANOSLEEP
69# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
70# else 88# else
89# undef EV_USE_NANOSLEEP
71# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
72# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
73# endif 100# endif
74 101
102# if HAVE_POLL && HAVE_POLL_H
75# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
76# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
77# define EV_USE_SELECT 1
78# else
79# define EV_USE_SELECT 0
80# endif 105# endif
81# endif
82
83# ifndef EV_USE_POLL
84# if HAVE_POLL && HAVE_POLL_H
85# define EV_USE_POLL 1
86# else 106# else
107# undef EV_USE_POLL
87# define EV_USE_POLL 0 108# define EV_USE_POLL 0
88# endif
89# endif 109# endif
90 110
91# ifndef EV_USE_EPOLL
92# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
93# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
94# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
95# define EV_USE_EPOLL 0
96# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
97# endif 118# endif
98 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
99# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
100# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
101# define EV_USE_KQUEUE 1
102# else
103# define EV_USE_KQUEUE 0
104# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
105# endif 127# endif
106 128
107# ifndef EV_USE_PORT
108# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
109# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
110# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
111# define EV_USE_PORT 0
112# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
113# endif 136# endif
114 137
115# ifndef EV_USE_INOTIFY
116# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
117# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
118# else
119# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
120# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
121# endif 145# endif
122 146
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
123#endif 154# endif
124 155
125#include <math.h> 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
126#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
127#include <fcntl.h> 169#include <fcntl.h>
128#include <stddef.h> 170#include <stddef.h>
129 171
130#include <stdio.h> 172#include <stdio.h>
131 173
132#include <assert.h> 174#include <assert.h>
133#include <errno.h> 175#include <errno.h>
134#include <sys/types.h> 176#include <sys/types.h>
135#include <time.h> 177#include <time.h>
178#include <limits.h>
136 179
137#include <signal.h> 180#include <signal.h>
138 181
139#ifdef EV_H 182#ifdef EV_H
140# include EV_H 183# include EV_H
141#else 184#else
142# include "ev.h" 185# include "ev.h"
143#endif 186#endif
187
188EV_CPP(extern "C" {)
144 189
145#ifndef _WIN32 190#ifndef _WIN32
146# include <sys/time.h> 191# include <sys/time.h>
147# include <sys/wait.h> 192# include <sys/wait.h>
148# include <unistd.h> 193# include <unistd.h>
149#else 194#else
195# include <io.h>
150# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
151# include <windows.h> 197# include <windows.h>
152# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
153# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
154# endif 200# endif
201# undef EV_AVOID_STDIO
202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* this block tries to deduce configuration from header-defined symbols and defaults */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
245
246#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else
250# define EV_USE_CLOCK_SYSCALL 0
155#endif 251# endif
156 252#endif
157/**/
158 253
159#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else
160# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
259# endif
161#endif 260#endif
162 261
163#ifndef EV_USE_REALTIME 262#ifndef EV_USE_REALTIME
164# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
165#endif 264#endif
166 265
167#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
267# if _POSIX_C_SOURCE >= 199309L
268# define EV_USE_NANOSLEEP EV_FEATURE_OS
269# else
168# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
271# endif
169#endif 272#endif
170 273
171#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
172# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
173#endif 276#endif
174 277
175#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
176# ifdef _WIN32 279# ifdef _WIN32
177# define EV_USE_POLL 0 280# define EV_USE_POLL 0
178# else 281# else
179# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
180# endif 283# endif
181#endif 284#endif
182 285
183#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
289# else
184# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
291# endif
185#endif 292#endif
186 293
187#ifndef EV_USE_KQUEUE 294#ifndef EV_USE_KQUEUE
188# define EV_USE_KQUEUE 0 295# define EV_USE_KQUEUE 0
189#endif 296#endif
… …
191#ifndef EV_USE_PORT 298#ifndef EV_USE_PORT
192# define EV_USE_PORT 0 299# define EV_USE_PORT 0
193#endif 300#endif
194 301
195#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS
305# else
196# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
307# endif
197#endif 308#endif
198 309
199#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
201# define EV_PID_HASHSIZE 1 312#endif
313
314#ifndef EV_INOTIFY_HASHSIZE
315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
316#endif
317
318#ifndef EV_USE_EVENTFD
319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
320# define EV_USE_EVENTFD EV_FEATURE_OS
202# else 321# else
203# define EV_PID_HASHSIZE 16 322# define EV_USE_EVENTFD 0
204# endif 323# endif
205#endif 324#endif
206 325
207#ifndef EV_INOTIFY_HASHSIZE 326#ifndef EV_USE_SIGNALFD
208# if EV_MINIMAL 327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
209# define EV_INOTIFY_HASHSIZE 1 328# define EV_USE_SIGNALFD EV_FEATURE_OS
210# else 329# else
211# define EV_INOTIFY_HASHSIZE 16 330# define EV_USE_SIGNALFD 0
212# endif 331# endif
213#endif 332#endif
214 333
215/**/ 334#if 0 /* debugging */
335# define EV_VERIFY 3
336# define EV_USE_4HEAP 1
337# define EV_HEAP_CACHE_AT 1
338#endif
339
340#ifndef EV_VERIFY
341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
342#endif
343
344#ifndef EV_USE_4HEAP
345# define EV_USE_4HEAP EV_FEATURE_DATA
346#endif
347
348#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif
351
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h>
356# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1
360# else
361# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0
363# endif
364#endif
365
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
216 373
217#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
218# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
219# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
220#endif 377#endif
… …
228# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
229# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
230#endif 387#endif
231 388
232#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
233# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
234# include <sys/select.h> 392# include <sys/select.h>
235# endif 393# endif
236#endif 394#endif
237 395
238#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
397# include <sys/statfs.h>
239# include <sys/inotify.h> 398# include <sys/inotify.h>
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0
403# endif
240#endif 404#endif
241 405
242#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
243# include <winsock.h> 407# include <winsock.h>
244#endif 408#endif
245 409
410#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h>
413# ifndef EFD_NONBLOCK
414# define EFD_NONBLOCK O_NONBLOCK
415# endif
416# ifndef EFD_CLOEXEC
417# ifdef O_CLOEXEC
418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
446#endif
447
246/**/ 448/**/
247 449
450#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else
453# define EV_FREQUENT_CHECK do { } while (0)
454#endif
455
248/* 456/*
249 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
250 * It is added to ev_rt_now when scheduling periodics
251 * to ensure progress, time-wise, even when rounding
252 * errors are against us.
253 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
254 * Better solutions welcome.
255 */ 459 */
256#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
257 462
258#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
259#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
260/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
261 465
262#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
263# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
264# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
265#else 493#else
266# define expect(expr,value) (expr) 494 #define ecb_inline static
267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif 495#endif
496
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
271#endif 508 #endif
509#endif
272 510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif _MSC_VER >= 1400 && 0 /* TODO: only true when using volatiles */
517 #define ECB_MEMORY_FENCE do { } while (0)
518 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
519 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
520 #elif defined(_WIN32)
521 #include <WinNT.h>
522 #define ECB_MEMORY_FENCE MemoryBarrier ()
523 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
524 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
525 #endif
526#endif
527
528#ifndef ECB_MEMORY_FENCE
529 #include <pthread.h>
530
531 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
532 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
533 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
534 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
535#endif
536
537#if ECB_GCC_VERSION(3,1)
538 #define ecb_attribute(attrlist) __attribute__(attrlist)
539 #define ecb_is_constant(expr) __builtin_constant_p (expr)
540 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
541 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
542#else
543 #define ecb_attribute(attrlist)
544 #define ecb_is_constant(expr) 0
545 #define ecb_expect(expr,value) (expr)
546 #define ecb_prefetch(addr,rw,locality)
547#endif
548
549#define ecb_noinline ecb_attribute ((__noinline__))
550#define ecb_noreturn ecb_attribute ((__noreturn__))
551#define ecb_unused ecb_attribute ((__unused__))
552#define ecb_const ecb_attribute ((__const__))
553#define ecb_pure ecb_attribute ((__pure__))
554
555#if ECB_GCC_VERSION(4,3)
556 #define ecb_artificial ecb_attribute ((__artificial__))
557 #define ecb_hot ecb_attribute ((__hot__))
558 #define ecb_cold ecb_attribute ((__cold__))
559#else
560 #define ecb_artificial
561 #define ecb_hot
562 #define ecb_cold
563#endif
564
565/* put around conditional expressions if you are very sure that the */
566/* expression is mostly true or mostly false. note that these return */
567/* booleans, not the expression. */
273#define expect_false(expr) expect ((expr) != 0, 0) 568#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
274#define expect_true(expr) expect ((expr) != 0, 1) 569#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
570/* ecb.h end */
571
572#define expect_false(cond) ecb_expect_false (cond)
573#define expect_true(cond) ecb_expect_true (cond)
574#define noinline ecb_noinline
575
275#define inline_size static inline 576#define inline_size ecb_inline
276 577
277#if EV_MINIMAL 578#if EV_FEATURE_CODE
579# define inline_speed ecb_inline
580#else
278# define inline_speed static noinline 581# define inline_speed static noinline
582#endif
583
584#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
585
586#if EV_MINPRI == EV_MAXPRI
587# define ABSPRI(w) (((W)w), 0)
279#else 588#else
280# define inline_speed static inline
281#endif
282
283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 589# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
590#endif
285 591
286#define EMPTY /* required for microsofts broken pseudo-c compiler */ 592#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */ 593#define EMPTY2(a,b) /* used to suppress some warnings */
288 594
289typedef ev_watcher *W; 595typedef ev_watcher *W;
290typedef ev_watcher_list *WL; 596typedef ev_watcher_list *WL;
291typedef ev_watcher_time *WT; 597typedef ev_watcher_time *WT;
292 598
599#define ev_active(w) ((W)(w))->active
600#define ev_at(w) ((WT)(w))->at
601
602#if EV_USE_REALTIME
603/* sig_atomic_t is used to avoid per-thread variables or locking but still */
604/* giving it a reasonably high chance of working on typical architectures */
605static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
606#endif
607
293#if EV_USE_MONOTONIC 608#if EV_USE_MONOTONIC
294/* sig_atomic_t is used to avoid per-thread variables or locking but still */
295/* giving it a reasonably high chance of working on typical architetcures */
296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 609static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
610#endif
611
612#ifndef EV_FD_TO_WIN32_HANDLE
613# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
614#endif
615#ifndef EV_WIN32_HANDLE_TO_FD
616# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
617#endif
618#ifndef EV_WIN32_CLOSE_FD
619# define EV_WIN32_CLOSE_FD(fd) close (fd)
297#endif 620#endif
298 621
299#ifdef _WIN32 622#ifdef _WIN32
300# include "ev_win32.c" 623# include "ev_win32.c"
301#endif 624#endif
302 625
303/*****************************************************************************/ 626/*****************************************************************************/
304 627
628/* define a suitable floor function (only used by periodics atm) */
629
630#if EV_USE_FLOOR
631# include <math.h>
632# define ev_floor(v) floor (v)
633#else
634
635#include <float.h>
636
637/* a floor() replacement function, should be independent of ev_tstamp type */
638static ev_tstamp noinline
639ev_floor (ev_tstamp v)
640{
641 /* the choice of shift factor is not terribly important */
642#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
643 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
644#else
645 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
646#endif
647
648 /* argument too large for an unsigned long? */
649 if (expect_false (v >= shift))
650 {
651 ev_tstamp f;
652
653 if (v == v - 1.)
654 return v; /* very large number */
655
656 f = shift * ev_floor (v * (1. / shift));
657 return f + ev_floor (v - f);
658 }
659
660 /* special treatment for negative args? */
661 if (expect_false (v < 0.))
662 {
663 ev_tstamp f = -ev_floor (-v);
664
665 return f - (f == v ? 0 : 1);
666 }
667
668 /* fits into an unsigned long */
669 return (unsigned long)v;
670}
671
672#endif
673
674/*****************************************************************************/
675
676#ifdef __linux
677# include <sys/utsname.h>
678#endif
679
680static unsigned int noinline ecb_cold
681ev_linux_version (void)
682{
683#ifdef __linux
684 unsigned int v = 0;
685 struct utsname buf;
686 int i;
687 char *p = buf.release;
688
689 if (uname (&buf))
690 return 0;
691
692 for (i = 3+1; --i; )
693 {
694 unsigned int c = 0;
695
696 for (;;)
697 {
698 if (*p >= '0' && *p <= '9')
699 c = c * 10 + *p++ - '0';
700 else
701 {
702 p += *p == '.';
703 break;
704 }
705 }
706
707 v = (v << 8) | c;
708 }
709
710 return v;
711#else
712 return 0;
713#endif
714}
715
716/*****************************************************************************/
717
718#if EV_AVOID_STDIO
719static void noinline ecb_cold
720ev_printerr (const char *msg)
721{
722 write (STDERR_FILENO, msg, strlen (msg));
723}
724#endif
725
305static void (*syserr_cb)(const char *msg); 726static void (*syserr_cb)(const char *msg);
306 727
307void 728void ecb_cold
308ev_set_syserr_cb (void (*cb)(const char *msg)) 729ev_set_syserr_cb (void (*cb)(const char *msg))
309{ 730{
310 syserr_cb = cb; 731 syserr_cb = cb;
311} 732}
312 733
313static void noinline 734static void noinline ecb_cold
314syserr (const char *msg) 735ev_syserr (const char *msg)
315{ 736{
316 if (!msg) 737 if (!msg)
317 msg = "(libev) system error"; 738 msg = "(libev) system error";
318 739
319 if (syserr_cb) 740 if (syserr_cb)
320 syserr_cb (msg); 741 syserr_cb (msg);
321 else 742 else
322 { 743 {
744#if EV_AVOID_STDIO
745 ev_printerr (msg);
746 ev_printerr (": ");
747 ev_printerr (strerror (errno));
748 ev_printerr ("\n");
749#else
323 perror (msg); 750 perror (msg);
751#endif
324 abort (); 752 abort ();
325 } 753 }
326} 754}
327 755
756static void *
757ev_realloc_emul (void *ptr, long size)
758{
759#if __GLIBC__
760 return realloc (ptr, size);
761#else
762 /* some systems, notably openbsd and darwin, fail to properly
763 * implement realloc (x, 0) (as required by both ansi c-89 and
764 * the single unix specification, so work around them here.
765 */
766
767 if (size)
768 return realloc (ptr, size);
769
770 free (ptr);
771 return 0;
772#endif
773}
774
328static void *(*alloc)(void *ptr, long size); 775static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
329 776
330void 777void ecb_cold
331ev_set_allocator (void *(*cb)(void *ptr, long size)) 778ev_set_allocator (void *(*cb)(void *ptr, long size))
332{ 779{
333 alloc = cb; 780 alloc = cb;
334} 781}
335 782
336inline_speed void * 783inline_speed void *
337ev_realloc (void *ptr, long size) 784ev_realloc (void *ptr, long size)
338{ 785{
339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 786 ptr = alloc (ptr, size);
340 787
341 if (!ptr && size) 788 if (!ptr && size)
342 { 789 {
790#if EV_AVOID_STDIO
791 ev_printerr ("(libev) memory allocation failed, aborting.\n");
792#else
343 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 793 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
794#endif
344 abort (); 795 abort ();
345 } 796 }
346 797
347 return ptr; 798 return ptr;
348} 799}
… …
350#define ev_malloc(size) ev_realloc (0, (size)) 801#define ev_malloc(size) ev_realloc (0, (size))
351#define ev_free(ptr) ev_realloc ((ptr), 0) 802#define ev_free(ptr) ev_realloc ((ptr), 0)
352 803
353/*****************************************************************************/ 804/*****************************************************************************/
354 805
806/* set in reify when reification needed */
807#define EV_ANFD_REIFY 1
808
809/* file descriptor info structure */
355typedef struct 810typedef struct
356{ 811{
357 WL head; 812 WL head;
358 unsigned char events; 813 unsigned char events; /* the events watched for */
814 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
815 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
359 unsigned char reify; 816 unsigned char unused;
817#if EV_USE_EPOLL
818 unsigned int egen; /* generation counter to counter epoll bugs */
819#endif
360#if EV_SELECT_IS_WINSOCKET 820#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
361 SOCKET handle; 821 SOCKET handle;
362#endif 822#endif
823#if EV_USE_IOCP
824 OVERLAPPED or, ow;
825#endif
363} ANFD; 826} ANFD;
364 827
828/* stores the pending event set for a given watcher */
365typedef struct 829typedef struct
366{ 830{
367 W w; 831 W w;
368 int events; 832 int events; /* the pending event set for the given watcher */
369} ANPENDING; 833} ANPENDING;
370 834
371#if EV_USE_INOTIFY 835#if EV_USE_INOTIFY
836/* hash table entry per inotify-id */
372typedef struct 837typedef struct
373{ 838{
374 WL head; 839 WL head;
375} ANFS; 840} ANFS;
841#endif
842
843/* Heap Entry */
844#if EV_HEAP_CACHE_AT
845 /* a heap element */
846 typedef struct {
847 ev_tstamp at;
848 WT w;
849 } ANHE;
850
851 #define ANHE_w(he) (he).w /* access watcher, read-write */
852 #define ANHE_at(he) (he).at /* access cached at, read-only */
853 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
854#else
855 /* a heap element */
856 typedef WT ANHE;
857
858 #define ANHE_w(he) (he)
859 #define ANHE_at(he) (he)->at
860 #define ANHE_at_cache(he)
376#endif 861#endif
377 862
378#if EV_MULTIPLICITY 863#if EV_MULTIPLICITY
379 864
380 struct ev_loop 865 struct ev_loop
… …
399 884
400 static int ev_default_loop_ptr; 885 static int ev_default_loop_ptr;
401 886
402#endif 887#endif
403 888
889#if EV_FEATURE_API
890# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
891# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
892# define EV_INVOKE_PENDING invoke_cb (EV_A)
893#else
894# define EV_RELEASE_CB (void)0
895# define EV_ACQUIRE_CB (void)0
896# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
897#endif
898
899#define EVBREAK_RECURSE 0x80
900
404/*****************************************************************************/ 901/*****************************************************************************/
405 902
903#ifndef EV_HAVE_EV_TIME
406ev_tstamp 904ev_tstamp
407ev_time (void) 905ev_time (void)
408{ 906{
409#if EV_USE_REALTIME 907#if EV_USE_REALTIME
908 if (expect_true (have_realtime))
909 {
410 struct timespec ts; 910 struct timespec ts;
411 clock_gettime (CLOCK_REALTIME, &ts); 911 clock_gettime (CLOCK_REALTIME, &ts);
412 return ts.tv_sec + ts.tv_nsec * 1e-9; 912 return ts.tv_sec + ts.tv_nsec * 1e-9;
413#else 913 }
914#endif
915
414 struct timeval tv; 916 struct timeval tv;
415 gettimeofday (&tv, 0); 917 gettimeofday (&tv, 0);
416 return tv.tv_sec + tv.tv_usec * 1e-6; 918 return tv.tv_sec + tv.tv_usec * 1e-6;
417#endif
418} 919}
920#endif
419 921
420ev_tstamp inline_size 922inline_size ev_tstamp
421get_clock (void) 923get_clock (void)
422{ 924{
423#if EV_USE_MONOTONIC 925#if EV_USE_MONOTONIC
424 if (expect_true (have_monotonic)) 926 if (expect_true (have_monotonic))
425 { 927 {
… …
446 if (delay > 0.) 948 if (delay > 0.)
447 { 949 {
448#if EV_USE_NANOSLEEP 950#if EV_USE_NANOSLEEP
449 struct timespec ts; 951 struct timespec ts;
450 952
451 ts.tv_sec = (time_t)delay; 953 EV_TS_SET (ts, delay);
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453
454 nanosleep (&ts, 0); 954 nanosleep (&ts, 0);
455#elif defined(_WIN32) 955#elif defined(_WIN32)
456 Sleep ((unsigned long)(delay * 1e3)); 956 Sleep ((unsigned long)(delay * 1e3));
457#else 957#else
458 struct timeval tv; 958 struct timeval tv;
459 959
460 tv.tv_sec = (time_t)delay; 960 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 961 /* something not guaranteed by newer posix versions, but guaranteed */
462 962 /* by older ones */
963 EV_TV_SET (tv, delay);
463 select (0, 0, 0, 0, &tv); 964 select (0, 0, 0, 0, &tv);
464#endif 965#endif
465 } 966 }
466} 967}
467 968
468/*****************************************************************************/ 969/*****************************************************************************/
469 970
470int inline_size 971#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
972
973/* find a suitable new size for the given array, */
974/* hopefully by rounding to a nice-to-malloc size */
975inline_size int
471array_nextsize (int elem, int cur, int cnt) 976array_nextsize (int elem, int cur, int cnt)
472{ 977{
473 int ncur = cur + 1; 978 int ncur = cur + 1;
474 979
475 do 980 do
476 ncur <<= 1; 981 ncur <<= 1;
477 while (cnt > ncur); 982 while (cnt > ncur);
478 983
479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 984 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096) 985 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481 { 986 {
482 ncur *= elem; 987 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 988 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484 ncur = ncur - sizeof (void *) * 4; 989 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem; 990 ncur /= elem;
486 } 991 }
487 992
488 return ncur; 993 return ncur;
489} 994}
490 995
491static noinline void * 996static void * noinline ecb_cold
492array_realloc (int elem, void *base, int *cur, int cnt) 997array_realloc (int elem, void *base, int *cur, int cnt)
493{ 998{
494 *cur = array_nextsize (elem, *cur, cnt); 999 *cur = array_nextsize (elem, *cur, cnt);
495 return ev_realloc (base, elem * *cur); 1000 return ev_realloc (base, elem * *cur);
496} 1001}
1002
1003#define array_init_zero(base,count) \
1004 memset ((void *)(base), 0, sizeof (*(base)) * (count))
497 1005
498#define array_needsize(type,base,cur,cnt,init) \ 1006#define array_needsize(type,base,cur,cnt,init) \
499 if (expect_false ((cnt) > (cur))) \ 1007 if (expect_false ((cnt) > (cur))) \
500 { \ 1008 { \
501 int ocur_ = (cur); \ 1009 int ecb_unused ocur_ = (cur); \
502 (base) = (type *)array_realloc \ 1010 (base) = (type *)array_realloc \
503 (sizeof (type), (base), &(cur), (cnt)); \ 1011 (sizeof (type), (base), &(cur), (cnt)); \
504 init ((base) + (ocur_), (cur) - ocur_); \ 1012 init ((base) + (ocur_), (cur) - ocur_); \
505 } 1013 }
506 1014
… …
513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1021 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514 } 1022 }
515#endif 1023#endif
516 1024
517#define array_free(stem, idx) \ 1025#define array_free(stem, idx) \
518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1026 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
519 1027
520/*****************************************************************************/ 1028/*****************************************************************************/
1029
1030/* dummy callback for pending events */
1031static void noinline
1032pendingcb (EV_P_ ev_prepare *w, int revents)
1033{
1034}
521 1035
522void noinline 1036void noinline
523ev_feed_event (EV_P_ void *w, int revents) 1037ev_feed_event (EV_P_ void *w, int revents)
524{ 1038{
525 W w_ = (W)w; 1039 W w_ = (W)w;
… …
534 pendings [pri][w_->pending - 1].w = w_; 1048 pendings [pri][w_->pending - 1].w = w_;
535 pendings [pri][w_->pending - 1].events = revents; 1049 pendings [pri][w_->pending - 1].events = revents;
536 } 1050 }
537} 1051}
538 1052
539void inline_speed 1053inline_speed void
1054feed_reverse (EV_P_ W w)
1055{
1056 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1057 rfeeds [rfeedcnt++] = w;
1058}
1059
1060inline_size void
1061feed_reverse_done (EV_P_ int revents)
1062{
1063 do
1064 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1065 while (rfeedcnt);
1066}
1067
1068inline_speed void
540queue_events (EV_P_ W *events, int eventcnt, int type) 1069queue_events (EV_P_ W *events, int eventcnt, int type)
541{ 1070{
542 int i; 1071 int i;
543 1072
544 for (i = 0; i < eventcnt; ++i) 1073 for (i = 0; i < eventcnt; ++i)
545 ev_feed_event (EV_A_ events [i], type); 1074 ev_feed_event (EV_A_ events [i], type);
546} 1075}
547 1076
548/*****************************************************************************/ 1077/*****************************************************************************/
549 1078
550void inline_size 1079inline_speed void
551anfds_init (ANFD *base, int count)
552{
553 while (count--)
554 {
555 base->head = 0;
556 base->events = EV_NONE;
557 base->reify = 0;
558
559 ++base;
560 }
561}
562
563void inline_speed
564fd_event (EV_P_ int fd, int revents) 1080fd_event_nocheck (EV_P_ int fd, int revents)
565{ 1081{
566 ANFD *anfd = anfds + fd; 1082 ANFD *anfd = anfds + fd;
567 ev_io *w; 1083 ev_io *w;
568 1084
569 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1085 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
573 if (ev) 1089 if (ev)
574 ev_feed_event (EV_A_ (W)w, ev); 1090 ev_feed_event (EV_A_ (W)w, ev);
575 } 1091 }
576} 1092}
577 1093
1094/* do not submit kernel events for fds that have reify set */
1095/* because that means they changed while we were polling for new events */
1096inline_speed void
1097fd_event (EV_P_ int fd, int revents)
1098{
1099 ANFD *anfd = anfds + fd;
1100
1101 if (expect_true (!anfd->reify))
1102 fd_event_nocheck (EV_A_ fd, revents);
1103}
1104
578void 1105void
579ev_feed_fd_event (EV_P_ int fd, int revents) 1106ev_feed_fd_event (EV_P_ int fd, int revents)
580{ 1107{
581 if (fd >= 0 && fd < anfdmax) 1108 if (fd >= 0 && fd < anfdmax)
582 fd_event (EV_A_ fd, revents); 1109 fd_event_nocheck (EV_A_ fd, revents);
583} 1110}
584 1111
585void inline_size 1112/* make sure the external fd watch events are in-sync */
1113/* with the kernel/libev internal state */
1114inline_size void
586fd_reify (EV_P) 1115fd_reify (EV_P)
587{ 1116{
588 int i; 1117 int i;
1118
1119#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1120 for (i = 0; i < fdchangecnt; ++i)
1121 {
1122 int fd = fdchanges [i];
1123 ANFD *anfd = anfds + fd;
1124
1125 if (anfd->reify & EV__IOFDSET && anfd->head)
1126 {
1127 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1128
1129 if (handle != anfd->handle)
1130 {
1131 unsigned long arg;
1132
1133 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1134
1135 /* handle changed, but fd didn't - we need to do it in two steps */
1136 backend_modify (EV_A_ fd, anfd->events, 0);
1137 anfd->events = 0;
1138 anfd->handle = handle;
1139 }
1140 }
1141 }
1142#endif
589 1143
590 for (i = 0; i < fdchangecnt; ++i) 1144 for (i = 0; i < fdchangecnt; ++i)
591 { 1145 {
592 int fd = fdchanges [i]; 1146 int fd = fdchanges [i];
593 ANFD *anfd = anfds + fd; 1147 ANFD *anfd = anfds + fd;
594 ev_io *w; 1148 ev_io *w;
595 1149
596 unsigned char events = 0; 1150 unsigned char o_events = anfd->events;
1151 unsigned char o_reify = anfd->reify;
597 1152
598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1153 anfd->reify = 0;
599 events |= (unsigned char)w->events;
600 1154
601#if EV_SELECT_IS_WINSOCKET 1155 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
602 if (events)
603 { 1156 {
604 unsigned long argp; 1157 anfd->events = 0;
605 #ifdef EV_FD_TO_WIN32_HANDLE 1158
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1159 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
607 #else 1160 anfd->events |= (unsigned char)w->events;
608 anfd->handle = _get_osfhandle (fd); 1161
609 #endif 1162 if (o_events != anfd->events)
610 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1163 o_reify = EV__IOFDSET; /* actually |= */
611 } 1164 }
612#endif
613 1165
614 { 1166 if (o_reify & EV__IOFDSET)
615 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify;
617
618 anfd->reify = 0;
619 anfd->events = events;
620
621 if (o_events != events || o_reify & EV_IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events); 1167 backend_modify (EV_A_ fd, o_events, anfd->events);
623 }
624 } 1168 }
625 1169
626 fdchangecnt = 0; 1170 fdchangecnt = 0;
627} 1171}
628 1172
629void inline_size 1173/* something about the given fd changed */
1174inline_size void
630fd_change (EV_P_ int fd, int flags) 1175fd_change (EV_P_ int fd, int flags)
631{ 1176{
632 unsigned char reify = anfds [fd].reify; 1177 unsigned char reify = anfds [fd].reify;
633 anfds [fd].reify |= flags; 1178 anfds [fd].reify |= flags;
634 1179
… …
638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
639 fdchanges [fdchangecnt - 1] = fd; 1184 fdchanges [fdchangecnt - 1] = fd;
640 } 1185 }
641} 1186}
642 1187
643void inline_speed 1188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1189inline_speed void ecb_cold
644fd_kill (EV_P_ int fd) 1190fd_kill (EV_P_ int fd)
645{ 1191{
646 ev_io *w; 1192 ev_io *w;
647 1193
648 while ((w = (ev_io *)anfds [fd].head)) 1194 while ((w = (ev_io *)anfds [fd].head))
… …
650 ev_io_stop (EV_A_ w); 1196 ev_io_stop (EV_A_ w);
651 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652 } 1198 }
653} 1199}
654 1200
655int inline_size 1201/* check whether the given fd is actually valid, for error recovery */
1202inline_size int ecb_cold
656fd_valid (int fd) 1203fd_valid (int fd)
657{ 1204{
658#ifdef _WIN32 1205#ifdef _WIN32
659 return _get_osfhandle (fd) != -1; 1206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
660#else 1207#else
661 return fcntl (fd, F_GETFD) != -1; 1208 return fcntl (fd, F_GETFD) != -1;
662#endif 1209#endif
663} 1210}
664 1211
665/* called on EBADF to verify fds */ 1212/* called on EBADF to verify fds */
666static void noinline 1213static void noinline ecb_cold
667fd_ebadf (EV_P) 1214fd_ebadf (EV_P)
668{ 1215{
669 int fd; 1216 int fd;
670 1217
671 for (fd = 0; fd < anfdmax; ++fd) 1218 for (fd = 0; fd < anfdmax; ++fd)
672 if (anfds [fd].events) 1219 if (anfds [fd].events)
673 if (!fd_valid (fd) == -1 && errno == EBADF) 1220 if (!fd_valid (fd) && errno == EBADF)
674 fd_kill (EV_A_ fd); 1221 fd_kill (EV_A_ fd);
675} 1222}
676 1223
677/* called on ENOMEM in select/poll to kill some fds and retry */ 1224/* called on ENOMEM in select/poll to kill some fds and retry */
678static void noinline 1225static void noinline ecb_cold
679fd_enomem (EV_P) 1226fd_enomem (EV_P)
680{ 1227{
681 int fd; 1228 int fd;
682 1229
683 for (fd = anfdmax; fd--; ) 1230 for (fd = anfdmax; fd--; )
684 if (anfds [fd].events) 1231 if (anfds [fd].events)
685 { 1232 {
686 fd_kill (EV_A_ fd); 1233 fd_kill (EV_A_ fd);
687 return; 1234 break;
688 } 1235 }
689} 1236}
690 1237
691/* usually called after fork if backend needs to re-arm all fds from scratch */ 1238/* usually called after fork if backend needs to re-arm all fds from scratch */
692static void noinline 1239static void noinline
… …
696 1243
697 for (fd = 0; fd < anfdmax; ++fd) 1244 for (fd = 0; fd < anfdmax; ++fd)
698 if (anfds [fd].events) 1245 if (anfds [fd].events)
699 { 1246 {
700 anfds [fd].events = 0; 1247 anfds [fd].events = 0;
1248 anfds [fd].emask = 0;
701 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1249 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
702 } 1250 }
703} 1251}
704 1252
705/*****************************************************************************/ 1253/* used to prepare libev internal fd's */
706 1254/* this is not fork-safe */
707void inline_speed 1255inline_speed void
708upheap (WT *heap, int k)
709{
710 WT w = heap [k];
711
712 while (k)
713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
719 heap [k] = heap [p];
720 ((W)heap [k])->active = k + 1;
721 k = p;
722 }
723
724 heap [k] = w;
725 ((W)heap [k])->active = k + 1;
726}
727
728void inline_speed
729downheap (WT *heap, int N, int k)
730{
731 WT w = heap [k];
732
733 for (;;)
734 {
735 int c = (k << 1) + 1;
736
737 if (c >= N)
738 break;
739
740 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
741 ? 1 : 0;
742
743 if (w->at <= heap [c]->at)
744 break;
745
746 heap [k] = heap [c];
747 ((W)heap [k])->active = k + 1;
748
749 k = c;
750 }
751
752 heap [k] = w;
753 ((W)heap [k])->active = k + 1;
754}
755
756void inline_size
757adjustheap (WT *heap, int N, int k)
758{
759 upheap (heap, k);
760 downheap (heap, N, k);
761}
762
763/*****************************************************************************/
764
765typedef struct
766{
767 WL head;
768 EV_ATOMIC_T gotsig;
769} ANSIG;
770
771static ANSIG *signals;
772static int signalmax;
773
774static EV_ATOMIC_T gotsig;
775
776void inline_size
777signals_init (ANSIG *base, int count)
778{
779 while (count--)
780 {
781 base->head = 0;
782 base->gotsig = 0;
783
784 ++base;
785 }
786}
787
788/*****************************************************************************/
789
790void inline_speed
791fd_intern (int fd) 1256fd_intern (int fd)
792{ 1257{
793#ifdef _WIN32 1258#ifdef _WIN32
794 int arg = 1; 1259 unsigned long arg = 1;
795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1260 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
796#else 1261#else
797 fcntl (fd, F_SETFD, FD_CLOEXEC); 1262 fcntl (fd, F_SETFD, FD_CLOEXEC);
798 fcntl (fd, F_SETFL, O_NONBLOCK); 1263 fcntl (fd, F_SETFL, O_NONBLOCK);
799#endif 1264#endif
800} 1265}
801 1266
1267/*****************************************************************************/
1268
1269/*
1270 * the heap functions want a real array index. array index 0 is guaranteed to not
1271 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1272 * the branching factor of the d-tree.
1273 */
1274
1275/*
1276 * at the moment we allow libev the luxury of two heaps,
1277 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1278 * which is more cache-efficient.
1279 * the difference is about 5% with 50000+ watchers.
1280 */
1281#if EV_USE_4HEAP
1282
1283#define DHEAP 4
1284#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1285#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1286#define UPHEAP_DONE(p,k) ((p) == (k))
1287
1288/* away from the root */
1289inline_speed void
1290downheap (ANHE *heap, int N, int k)
1291{
1292 ANHE he = heap [k];
1293 ANHE *E = heap + N + HEAP0;
1294
1295 for (;;)
1296 {
1297 ev_tstamp minat;
1298 ANHE *minpos;
1299 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1300
1301 /* find minimum child */
1302 if (expect_true (pos + DHEAP - 1 < E))
1303 {
1304 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1305 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1306 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1307 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1308 }
1309 else if (pos < E)
1310 {
1311 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1312 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1313 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1314 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1315 }
1316 else
1317 break;
1318
1319 if (ANHE_at (he) <= minat)
1320 break;
1321
1322 heap [k] = *minpos;
1323 ev_active (ANHE_w (*minpos)) = k;
1324
1325 k = minpos - heap;
1326 }
1327
1328 heap [k] = he;
1329 ev_active (ANHE_w (he)) = k;
1330}
1331
1332#else /* 4HEAP */
1333
1334#define HEAP0 1
1335#define HPARENT(k) ((k) >> 1)
1336#define UPHEAP_DONE(p,k) (!(p))
1337
1338/* away from the root */
1339inline_speed void
1340downheap (ANHE *heap, int N, int k)
1341{
1342 ANHE he = heap [k];
1343
1344 for (;;)
1345 {
1346 int c = k << 1;
1347
1348 if (c >= N + HEAP0)
1349 break;
1350
1351 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1352 ? 1 : 0;
1353
1354 if (ANHE_at (he) <= ANHE_at (heap [c]))
1355 break;
1356
1357 heap [k] = heap [c];
1358 ev_active (ANHE_w (heap [k])) = k;
1359
1360 k = c;
1361 }
1362
1363 heap [k] = he;
1364 ev_active (ANHE_w (he)) = k;
1365}
1366#endif
1367
1368/* towards the root */
1369inline_speed void
1370upheap (ANHE *heap, int k)
1371{
1372 ANHE he = heap [k];
1373
1374 for (;;)
1375 {
1376 int p = HPARENT (k);
1377
1378 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1379 break;
1380
1381 heap [k] = heap [p];
1382 ev_active (ANHE_w (heap [k])) = k;
1383 k = p;
1384 }
1385
1386 heap [k] = he;
1387 ev_active (ANHE_w (he)) = k;
1388}
1389
1390/* move an element suitably so it is in a correct place */
1391inline_size void
1392adjustheap (ANHE *heap, int N, int k)
1393{
1394 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1395 upheap (heap, k);
1396 else
1397 downheap (heap, N, k);
1398}
1399
1400/* rebuild the heap: this function is used only once and executed rarely */
1401inline_size void
1402reheap (ANHE *heap, int N)
1403{
1404 int i;
1405
1406 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1407 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1408 for (i = 0; i < N; ++i)
1409 upheap (heap, i + HEAP0);
1410}
1411
1412/*****************************************************************************/
1413
1414/* associate signal watchers to a signal signal */
1415typedef struct
1416{
1417 EV_ATOMIC_T pending;
1418#if EV_MULTIPLICITY
1419 EV_P;
1420#endif
1421 WL head;
1422} ANSIG;
1423
1424static ANSIG signals [EV_NSIG - 1];
1425
1426/*****************************************************************************/
1427
1428#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1429
802static void noinline 1430static void noinline ecb_cold
803evpipe_init (EV_P) 1431evpipe_init (EV_P)
804{ 1432{
805 if (!ev_is_active (&pipeev)) 1433 if (!ev_is_active (&pipe_w))
806 { 1434 {
1435# if EV_USE_EVENTFD
1436 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1437 if (evfd < 0 && errno == EINVAL)
1438 evfd = eventfd (0, 0);
1439
1440 if (evfd >= 0)
1441 {
1442 evpipe [0] = -1;
1443 fd_intern (evfd); /* doing it twice doesn't hurt */
1444 ev_io_set (&pipe_w, evfd, EV_READ);
1445 }
1446 else
1447# endif
1448 {
807 while (pipe (evpipe)) 1449 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe"); 1450 ev_syserr ("(libev) error creating signal/async pipe");
809 1451
810 fd_intern (evpipe [0]); 1452 fd_intern (evpipe [0]);
811 fd_intern (evpipe [1]); 1453 fd_intern (evpipe [1]);
812
813 ev_io_set (&pipeev, evpipe [0], EV_READ); 1454 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1455 }
1456
814 ev_io_start (EV_A_ &pipeev); 1457 ev_io_start (EV_A_ &pipe_w);
815 ev_unref (EV_A); /* watcher should not keep loop alive */ 1458 ev_unref (EV_A); /* watcher should not keep loop alive */
816 } 1459 }
817} 1460}
818 1461
819void inline_size 1462inline_speed void
820evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1463evpipe_write (EV_P_ EV_ATOMIC_T *flag)
821{ 1464{
822 if (!*flag) 1465 if (expect_true (*flag))
1466 return;
1467
1468 *flag = 1;
1469
1470 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1471
1472 pipe_write_skipped = 1;
1473
1474 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1475
1476 if (pipe_write_wanted)
823 { 1477 {
1478 int old_errno;
1479
1480 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1481
824 int old_errno = errno; /* save errno because write might clobber it */ 1482 old_errno = errno; /* save errno because write will clobber it */
825 1483
826 *flag = 1; 1484#if EV_USE_EVENTFD
827 write (evpipe [1], &old_errno, 1); 1485 if (evfd >= 0)
1486 {
1487 uint64_t counter = 1;
1488 write (evfd, &counter, sizeof (uint64_t));
1489 }
1490 else
1491#endif
1492 {
1493 /* win32 people keep sending patches that change this write() to send() */
1494 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1495 /* so when you think this write should be a send instead, please find out */
1496 /* where your send() is from - it's definitely not the microsoft send, and */
1497 /* tell me. thank you. */
1498 write (evpipe [1], &(evpipe [1]), 1);
1499 }
828 1500
829 errno = old_errno; 1501 errno = old_errno;
830 } 1502 }
831} 1503}
832 1504
1505/* called whenever the libev signal pipe */
1506/* got some events (signal, async) */
833static void 1507static void
834pipecb (EV_P_ ev_io *iow, int revents) 1508pipecb (EV_P_ ev_io *iow, int revents)
835{ 1509{
1510 int i;
1511
1512 if (revents & EV_READ)
836 { 1513 {
837 int dummy; 1514#if EV_USE_EVENTFD
1515 if (evfd >= 0)
1516 {
1517 uint64_t counter;
1518 read (evfd, &counter, sizeof (uint64_t));
1519 }
1520 else
1521#endif
1522 {
1523 char dummy;
1524 /* see discussion in evpipe_write when you think this read should be recv in win32 */
838 read (evpipe [0], &dummy, 1); 1525 read (evpipe [0], &dummy, 1);
1526 }
839 } 1527 }
840 1528
841 if (gotsig && ev_is_default_loop (EV_A)) 1529 pipe_write_skipped = 0;
842 {
843 int signum;
844 gotsig = 0;
845 1530
846 for (signum = signalmax; signum--; ) 1531#if EV_SIGNAL_ENABLE
847 if (signals [signum].gotsig) 1532 if (sig_pending)
1533 {
1534 sig_pending = 0;
1535
1536 for (i = EV_NSIG - 1; i--; )
1537 if (expect_false (signals [i].pending))
848 ev_feed_signal_event (EV_A_ signum + 1); 1538 ev_feed_signal_event (EV_A_ i + 1);
849 } 1539 }
1540#endif
850 1541
851#if EV_ASYNC_ENABLE 1542#if EV_ASYNC_ENABLE
852 if (gotasync) 1543 if (async_pending)
853 { 1544 {
854 int i; 1545 async_pending = 0;
855 gotasync = 0;
856 1546
857 for (i = asynccnt; i--; ) 1547 for (i = asynccnt; i--; )
858 if (asyncs [i]->sent) 1548 if (asyncs [i]->sent)
859 { 1549 {
860 asyncs [i]->sent = 0; 1550 asyncs [i]->sent = 0;
… …
864#endif 1554#endif
865} 1555}
866 1556
867/*****************************************************************************/ 1557/*****************************************************************************/
868 1558
1559void
1560ev_feed_signal (int signum)
1561{
1562#if EV_MULTIPLICITY
1563 EV_P = signals [signum - 1].loop;
1564
1565 if (!EV_A)
1566 return;
1567#endif
1568
1569 if (!ev_active (&pipe_w))
1570 return;
1571
1572 signals [signum - 1].pending = 1;
1573 evpipe_write (EV_A_ &sig_pending);
1574}
1575
869static void 1576static void
870ev_sighandler (int signum) 1577ev_sighandler (int signum)
871{ 1578{
872#if EV_MULTIPLICITY
873 struct ev_loop *loop = &default_loop_struct;
874#endif
875
876#if _WIN32 1579#ifdef _WIN32
877 signal (signum, ev_sighandler); 1580 signal (signum, ev_sighandler);
878#endif 1581#endif
879 1582
880 signals [signum - 1].gotsig = 1; 1583 ev_feed_signal (signum);
881 evpipe_write (EV_A_ &gotsig);
882} 1584}
883 1585
884void noinline 1586void noinline
885ev_feed_signal_event (EV_P_ int signum) 1587ev_feed_signal_event (EV_P_ int signum)
886{ 1588{
887 WL w; 1589 WL w;
888 1590
1591 if (expect_false (signum <= 0 || signum > EV_NSIG))
1592 return;
1593
1594 --signum;
1595
889#if EV_MULTIPLICITY 1596#if EV_MULTIPLICITY
890 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1597 /* it is permissible to try to feed a signal to the wrong loop */
891#endif 1598 /* or, likely more useful, feeding a signal nobody is waiting for */
892 1599
893 --signum; 1600 if (expect_false (signals [signum].loop != EV_A))
894
895 if (signum < 0 || signum >= signalmax)
896 return; 1601 return;
1602#endif
897 1603
898 signals [signum].gotsig = 0; 1604 signals [signum].pending = 0;
899 1605
900 for (w = signals [signum].head; w; w = w->next) 1606 for (w = signals [signum].head; w; w = w->next)
901 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1607 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
902} 1608}
903 1609
1610#if EV_USE_SIGNALFD
1611static void
1612sigfdcb (EV_P_ ev_io *iow, int revents)
1613{
1614 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1615
1616 for (;;)
1617 {
1618 ssize_t res = read (sigfd, si, sizeof (si));
1619
1620 /* not ISO-C, as res might be -1, but works with SuS */
1621 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1622 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1623
1624 if (res < (ssize_t)sizeof (si))
1625 break;
1626 }
1627}
1628#endif
1629
1630#endif
1631
904/*****************************************************************************/ 1632/*****************************************************************************/
905 1633
1634#if EV_CHILD_ENABLE
906static WL childs [EV_PID_HASHSIZE]; 1635static WL childs [EV_PID_HASHSIZE];
907
908#ifndef _WIN32
909 1636
910static ev_signal childev; 1637static ev_signal childev;
911 1638
912#ifndef WIFCONTINUED 1639#ifndef WIFCONTINUED
913# define WIFCONTINUED(status) 0 1640# define WIFCONTINUED(status) 0
914#endif 1641#endif
915 1642
916void inline_speed 1643/* handle a single child status event */
1644inline_speed void
917child_reap (EV_P_ int chain, int pid, int status) 1645child_reap (EV_P_ int chain, int pid, int status)
918{ 1646{
919 ev_child *w; 1647 ev_child *w;
920 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1648 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
921 1649
922 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1650 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
923 { 1651 {
924 if ((w->pid == pid || !w->pid) 1652 if ((w->pid == pid || !w->pid)
925 && (!traced || (w->flags & 1))) 1653 && (!traced || (w->flags & 1)))
926 { 1654 {
927 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1655 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
934 1662
935#ifndef WCONTINUED 1663#ifndef WCONTINUED
936# define WCONTINUED 0 1664# define WCONTINUED 0
937#endif 1665#endif
938 1666
1667/* called on sigchld etc., calls waitpid */
939static void 1668static void
940childcb (EV_P_ ev_signal *sw, int revents) 1669childcb (EV_P_ ev_signal *sw, int revents)
941{ 1670{
942 int pid, status; 1671 int pid, status;
943 1672
… …
951 /* make sure we are called again until all children have been reaped */ 1680 /* make sure we are called again until all children have been reaped */
952 /* we need to do it this way so that the callback gets called before we continue */ 1681 /* we need to do it this way so that the callback gets called before we continue */
953 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1682 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
954 1683
955 child_reap (EV_A_ pid, pid, status); 1684 child_reap (EV_A_ pid, pid, status);
956 if (EV_PID_HASHSIZE > 1) 1685 if ((EV_PID_HASHSIZE) > 1)
957 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1686 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
958} 1687}
959 1688
960#endif 1689#endif
961 1690
962/*****************************************************************************/ 1691/*****************************************************************************/
963 1692
1693#if EV_USE_IOCP
1694# include "ev_iocp.c"
1695#endif
964#if EV_USE_PORT 1696#if EV_USE_PORT
965# include "ev_port.c" 1697# include "ev_port.c"
966#endif 1698#endif
967#if EV_USE_KQUEUE 1699#if EV_USE_KQUEUE
968# include "ev_kqueue.c" 1700# include "ev_kqueue.c"
… …
975#endif 1707#endif
976#if EV_USE_SELECT 1708#if EV_USE_SELECT
977# include "ev_select.c" 1709# include "ev_select.c"
978#endif 1710#endif
979 1711
980int 1712int ecb_cold
981ev_version_major (void) 1713ev_version_major (void)
982{ 1714{
983 return EV_VERSION_MAJOR; 1715 return EV_VERSION_MAJOR;
984} 1716}
985 1717
986int 1718int ecb_cold
987ev_version_minor (void) 1719ev_version_minor (void)
988{ 1720{
989 return EV_VERSION_MINOR; 1721 return EV_VERSION_MINOR;
990} 1722}
991 1723
992/* return true if we are running with elevated privileges and should ignore env variables */ 1724/* return true if we are running with elevated privileges and should ignore env variables */
993int inline_size 1725int inline_size ecb_cold
994enable_secure (void) 1726enable_secure (void)
995{ 1727{
996#ifdef _WIN32 1728#ifdef _WIN32
997 return 0; 1729 return 0;
998#else 1730#else
999 return getuid () != geteuid () 1731 return getuid () != geteuid ()
1000 || getgid () != getegid (); 1732 || getgid () != getegid ();
1001#endif 1733#endif
1002} 1734}
1003 1735
1004unsigned int 1736unsigned int ecb_cold
1005ev_supported_backends (void) 1737ev_supported_backends (void)
1006{ 1738{
1007 unsigned int flags = 0; 1739 unsigned int flags = 0;
1008 1740
1009 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1013 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1014 1746
1015 return flags; 1747 return flags;
1016} 1748}
1017 1749
1018unsigned int 1750unsigned int ecb_cold
1019ev_recommended_backends (void) 1751ev_recommended_backends (void)
1020{ 1752{
1021 unsigned int flags = ev_supported_backends (); 1753 unsigned int flags = ev_supported_backends ();
1022 1754
1023#ifndef __NetBSD__ 1755#ifndef __NetBSD__
1024 /* kqueue is borked on everything but netbsd apparently */ 1756 /* kqueue is borked on everything but netbsd apparently */
1025 /* it usually doesn't work correctly on anything but sockets and pipes */ 1757 /* it usually doesn't work correctly on anything but sockets and pipes */
1026 flags &= ~EVBACKEND_KQUEUE; 1758 flags &= ~EVBACKEND_KQUEUE;
1027#endif 1759#endif
1028#ifdef __APPLE__ 1760#ifdef __APPLE__
1029 // flags &= ~EVBACKEND_KQUEUE; for documentation 1761 /* only select works correctly on that "unix-certified" platform */
1030 flags &= ~EVBACKEND_POLL; 1762 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1763 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1764#endif
1765#ifdef __FreeBSD__
1766 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1031#endif 1767#endif
1032 1768
1033 return flags; 1769 return flags;
1034} 1770}
1035 1771
1036unsigned int 1772unsigned int ecb_cold
1037ev_embeddable_backends (void) 1773ev_embeddable_backends (void)
1038{ 1774{
1039 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1775 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1040 1776
1041 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1777 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1042 /* please fix it and tell me how to detect the fix */ 1778 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1043 flags &= ~EVBACKEND_EPOLL; 1779 flags &= ~EVBACKEND_EPOLL;
1044 1780
1045 return flags; 1781 return flags;
1046} 1782}
1047 1783
1048unsigned int 1784unsigned int
1049ev_backend (EV_P) 1785ev_backend (EV_P)
1050{ 1786{
1051 return backend; 1787 return backend;
1052} 1788}
1053 1789
1790#if EV_FEATURE_API
1054unsigned int 1791unsigned int
1055ev_loop_count (EV_P) 1792ev_iteration (EV_P)
1056{ 1793{
1057 return loop_count; 1794 return loop_count;
1795}
1796
1797unsigned int
1798ev_depth (EV_P)
1799{
1800 return loop_depth;
1058} 1801}
1059 1802
1060void 1803void
1061ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1804ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1062{ 1805{
… …
1067ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1810ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1068{ 1811{
1069 timeout_blocktime = interval; 1812 timeout_blocktime = interval;
1070} 1813}
1071 1814
1815void
1816ev_set_userdata (EV_P_ void *data)
1817{
1818 userdata = data;
1819}
1820
1821void *
1822ev_userdata (EV_P)
1823{
1824 return userdata;
1825}
1826
1827void
1828ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1829{
1830 invoke_cb = invoke_pending_cb;
1831}
1832
1833void
1834ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1835{
1836 release_cb = release;
1837 acquire_cb = acquire;
1838}
1839#endif
1840
1841/* initialise a loop structure, must be zero-initialised */
1072static void noinline 1842static void noinline ecb_cold
1073loop_init (EV_P_ unsigned int flags) 1843loop_init (EV_P_ unsigned int flags)
1074{ 1844{
1075 if (!backend) 1845 if (!backend)
1076 { 1846 {
1847 origflags = flags;
1848
1849#if EV_USE_REALTIME
1850 if (!have_realtime)
1851 {
1852 struct timespec ts;
1853
1854 if (!clock_gettime (CLOCK_REALTIME, &ts))
1855 have_realtime = 1;
1856 }
1857#endif
1858
1077#if EV_USE_MONOTONIC 1859#if EV_USE_MONOTONIC
1860 if (!have_monotonic)
1078 { 1861 {
1079 struct timespec ts; 1862 struct timespec ts;
1863
1080 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1864 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1081 have_monotonic = 1; 1865 have_monotonic = 1;
1082 } 1866 }
1083#endif
1084
1085 ev_rt_now = ev_time ();
1086 mn_now = get_clock ();
1087 now_floor = mn_now;
1088 rtmn_diff = ev_rt_now - mn_now;
1089
1090 io_blocktime = 0.;
1091 timeout_blocktime = 0.;
1092 backend = 0;
1093 backend_fd = -1;
1094 gotasync = 0;
1095#if EV_USE_INOTIFY
1096 fs_fd = -2;
1097#endif 1867#endif
1098 1868
1099 /* pid check not overridable via env */ 1869 /* pid check not overridable via env */
1100#ifndef _WIN32 1870#ifndef _WIN32
1101 if (flags & EVFLAG_FORKCHECK) 1871 if (flags & EVFLAG_FORKCHECK)
… …
1105 if (!(flags & EVFLAG_NOENV) 1875 if (!(flags & EVFLAG_NOENV)
1106 && !enable_secure () 1876 && !enable_secure ()
1107 && getenv ("LIBEV_FLAGS")) 1877 && getenv ("LIBEV_FLAGS"))
1108 flags = atoi (getenv ("LIBEV_FLAGS")); 1878 flags = atoi (getenv ("LIBEV_FLAGS"));
1109 1879
1110 if (!(flags & 0x0000ffffUL)) 1880 ev_rt_now = ev_time ();
1881 mn_now = get_clock ();
1882 now_floor = mn_now;
1883 rtmn_diff = ev_rt_now - mn_now;
1884#if EV_FEATURE_API
1885 invoke_cb = ev_invoke_pending;
1886#endif
1887
1888 io_blocktime = 0.;
1889 timeout_blocktime = 0.;
1890 backend = 0;
1891 backend_fd = -1;
1892 sig_pending = 0;
1893#if EV_ASYNC_ENABLE
1894 async_pending = 0;
1895#endif
1896 pipe_write_skipped = 0;
1897 pipe_write_wanted = 0;
1898#if EV_USE_INOTIFY
1899 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1900#endif
1901#if EV_USE_SIGNALFD
1902 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1903#endif
1904
1905 if (!(flags & EVBACKEND_MASK))
1111 flags |= ev_recommended_backends (); 1906 flags |= ev_recommended_backends ();
1112 1907
1908#if EV_USE_IOCP
1909 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1910#endif
1113#if EV_USE_PORT 1911#if EV_USE_PORT
1114 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1912 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1115#endif 1913#endif
1116#if EV_USE_KQUEUE 1914#if EV_USE_KQUEUE
1117 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1915 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1124#endif 1922#endif
1125#if EV_USE_SELECT 1923#if EV_USE_SELECT
1126 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1924 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1127#endif 1925#endif
1128 1926
1927 ev_prepare_init (&pending_w, pendingcb);
1928
1929#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1129 ev_init (&pipeev, pipecb); 1930 ev_init (&pipe_w, pipecb);
1130 ev_set_priority (&pipeev, EV_MAXPRI); 1931 ev_set_priority (&pipe_w, EV_MAXPRI);
1932#endif
1131 } 1933 }
1132} 1934}
1133 1935
1134static void noinline 1936/* free up a loop structure */
1937void ecb_cold
1135loop_destroy (EV_P) 1938ev_loop_destroy (EV_P)
1136{ 1939{
1137 int i; 1940 int i;
1138 1941
1942#if EV_MULTIPLICITY
1943 /* mimic free (0) */
1944 if (!EV_A)
1945 return;
1946#endif
1947
1948#if EV_CLEANUP_ENABLE
1949 /* queue cleanup watchers (and execute them) */
1950 if (expect_false (cleanupcnt))
1951 {
1952 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1953 EV_INVOKE_PENDING;
1954 }
1955#endif
1956
1957#if EV_CHILD_ENABLE
1958 if (ev_is_active (&childev))
1959 {
1960 ev_ref (EV_A); /* child watcher */
1961 ev_signal_stop (EV_A_ &childev);
1962 }
1963#endif
1964
1139 if (ev_is_active (&pipeev)) 1965 if (ev_is_active (&pipe_w))
1140 { 1966 {
1141 ev_ref (EV_A); /* signal watcher */ 1967 /*ev_ref (EV_A);*/
1142 ev_io_stop (EV_A_ &pipeev); 1968 /*ev_io_stop (EV_A_ &pipe_w);*/
1143 1969
1144 close (evpipe [0]); evpipe [0] = 0; 1970#if EV_USE_EVENTFD
1145 close (evpipe [1]); evpipe [1] = 0; 1971 if (evfd >= 0)
1972 close (evfd);
1973#endif
1974
1975 if (evpipe [0] >= 0)
1976 {
1977 EV_WIN32_CLOSE_FD (evpipe [0]);
1978 EV_WIN32_CLOSE_FD (evpipe [1]);
1979 }
1146 } 1980 }
1981
1982#if EV_USE_SIGNALFD
1983 if (ev_is_active (&sigfd_w))
1984 close (sigfd);
1985#endif
1147 1986
1148#if EV_USE_INOTIFY 1987#if EV_USE_INOTIFY
1149 if (fs_fd >= 0) 1988 if (fs_fd >= 0)
1150 close (fs_fd); 1989 close (fs_fd);
1151#endif 1990#endif
1152 1991
1153 if (backend_fd >= 0) 1992 if (backend_fd >= 0)
1154 close (backend_fd); 1993 close (backend_fd);
1155 1994
1995#if EV_USE_IOCP
1996 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1997#endif
1156#if EV_USE_PORT 1998#if EV_USE_PORT
1157 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1999 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1158#endif 2000#endif
1159#if EV_USE_KQUEUE 2001#if EV_USE_KQUEUE
1160 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2002 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1175#if EV_IDLE_ENABLE 2017#if EV_IDLE_ENABLE
1176 array_free (idle, [i]); 2018 array_free (idle, [i]);
1177#endif 2019#endif
1178 } 2020 }
1179 2021
1180 ev_free (anfds); anfdmax = 0; 2022 ev_free (anfds); anfds = 0; anfdmax = 0;
1181 2023
1182 /* have to use the microsoft-never-gets-it-right macro */ 2024 /* have to use the microsoft-never-gets-it-right macro */
2025 array_free (rfeed, EMPTY);
1183 array_free (fdchange, EMPTY); 2026 array_free (fdchange, EMPTY);
1184 array_free (timer, EMPTY); 2027 array_free (timer, EMPTY);
1185#if EV_PERIODIC_ENABLE 2028#if EV_PERIODIC_ENABLE
1186 array_free (periodic, EMPTY); 2029 array_free (periodic, EMPTY);
1187#endif 2030#endif
1188#if EV_FORK_ENABLE 2031#if EV_FORK_ENABLE
1189 array_free (fork, EMPTY); 2032 array_free (fork, EMPTY);
1190#endif 2033#endif
2034#if EV_CLEANUP_ENABLE
2035 array_free (cleanup, EMPTY);
2036#endif
1191 array_free (prepare, EMPTY); 2037 array_free (prepare, EMPTY);
1192 array_free (check, EMPTY); 2038 array_free (check, EMPTY);
1193#if EV_ASYNC_ENABLE 2039#if EV_ASYNC_ENABLE
1194 array_free (async, EMPTY); 2040 array_free (async, EMPTY);
1195#endif 2041#endif
1196 2042
1197 backend = 0; 2043 backend = 0;
1198}
1199 2044
2045#if EV_MULTIPLICITY
2046 if (ev_is_default_loop (EV_A))
2047#endif
2048 ev_default_loop_ptr = 0;
2049#if EV_MULTIPLICITY
2050 else
2051 ev_free (EV_A);
2052#endif
2053}
2054
2055#if EV_USE_INOTIFY
1200void inline_size infy_fork (EV_P); 2056inline_size void infy_fork (EV_P);
2057#endif
1201 2058
1202void inline_size 2059inline_size void
1203loop_fork (EV_P) 2060loop_fork (EV_P)
1204{ 2061{
1205#if EV_USE_PORT 2062#if EV_USE_PORT
1206 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2063 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1207#endif 2064#endif
… …
1213#endif 2070#endif
1214#if EV_USE_INOTIFY 2071#if EV_USE_INOTIFY
1215 infy_fork (EV_A); 2072 infy_fork (EV_A);
1216#endif 2073#endif
1217 2074
1218 if (ev_is_active (&pipeev)) 2075 if (ev_is_active (&pipe_w))
1219 { 2076 {
1220 /* this "locks" the handlers against writing to the pipe */ 2077 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1221 /* while we modify the fd vars */
1222 gotsig = 1;
1223#if EV_ASYNC_ENABLE
1224 gotasync = 1;
1225#endif
1226 2078
1227 ev_ref (EV_A); 2079 ev_ref (EV_A);
1228 ev_io_stop (EV_A_ &pipeev); 2080 ev_io_stop (EV_A_ &pipe_w);
1229 close (evpipe [0]);
1230 close (evpipe [1]);
1231 2081
2082#if EV_USE_EVENTFD
2083 if (evfd >= 0)
2084 close (evfd);
2085#endif
2086
2087 if (evpipe [0] >= 0)
2088 {
2089 EV_WIN32_CLOSE_FD (evpipe [0]);
2090 EV_WIN32_CLOSE_FD (evpipe [1]);
2091 }
2092
2093#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1232 evpipe_init (EV_A); 2094 evpipe_init (EV_A);
1233 /* now iterate over everything, in case we missed something */ 2095 /* now iterate over everything, in case we missed something */
1234 pipecb (EV_A_ &pipeev, EV_READ); 2096 pipecb (EV_A_ &pipe_w, EV_READ);
2097#endif
1235 } 2098 }
1236 2099
1237 postfork = 0; 2100 postfork = 0;
1238} 2101}
1239 2102
1240#if EV_MULTIPLICITY 2103#if EV_MULTIPLICITY
2104
1241struct ev_loop * 2105struct ev_loop * ecb_cold
1242ev_loop_new (unsigned int flags) 2106ev_loop_new (unsigned int flags)
1243{ 2107{
1244 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2108 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1245 2109
1246 memset (loop, 0, sizeof (struct ev_loop)); 2110 memset (EV_A, 0, sizeof (struct ev_loop));
1247
1248 loop_init (EV_A_ flags); 2111 loop_init (EV_A_ flags);
1249 2112
1250 if (ev_backend (EV_A)) 2113 if (ev_backend (EV_A))
1251 return loop; 2114 return EV_A;
1252 2115
2116 ev_free (EV_A);
1253 return 0; 2117 return 0;
1254} 2118}
1255 2119
1256void 2120#endif /* multiplicity */
1257ev_loop_destroy (EV_P)
1258{
1259 loop_destroy (EV_A);
1260 ev_free (loop);
1261}
1262 2121
1263void 2122#if EV_VERIFY
1264ev_loop_fork (EV_P) 2123static void noinline ecb_cold
2124verify_watcher (EV_P_ W w)
1265{ 2125{
1266 postfork = 1; /* must be in line with ev_default_fork */ 2126 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1267}
1268 2127
2128 if (w->pending)
2129 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2130}
2131
2132static void noinline ecb_cold
2133verify_heap (EV_P_ ANHE *heap, int N)
2134{
2135 int i;
2136
2137 for (i = HEAP0; i < N + HEAP0; ++i)
2138 {
2139 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2140 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2141 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2142
2143 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2144 }
2145}
2146
2147static void noinline ecb_cold
2148array_verify (EV_P_ W *ws, int cnt)
2149{
2150 while (cnt--)
2151 {
2152 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2153 verify_watcher (EV_A_ ws [cnt]);
2154 }
2155}
2156#endif
2157
2158#if EV_FEATURE_API
2159void ecb_cold
2160ev_verify (EV_P)
2161{
2162#if EV_VERIFY
2163 int i;
2164 WL w;
2165
2166 assert (activecnt >= -1);
2167
2168 assert (fdchangemax >= fdchangecnt);
2169 for (i = 0; i < fdchangecnt; ++i)
2170 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2171
2172 assert (anfdmax >= 0);
2173 for (i = 0; i < anfdmax; ++i)
2174 for (w = anfds [i].head; w; w = w->next)
2175 {
2176 verify_watcher (EV_A_ (W)w);
2177 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2178 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2179 }
2180
2181 assert (timermax >= timercnt);
2182 verify_heap (EV_A_ timers, timercnt);
2183
2184#if EV_PERIODIC_ENABLE
2185 assert (periodicmax >= periodiccnt);
2186 verify_heap (EV_A_ periodics, periodiccnt);
2187#endif
2188
2189 for (i = NUMPRI; i--; )
2190 {
2191 assert (pendingmax [i] >= pendingcnt [i]);
2192#if EV_IDLE_ENABLE
2193 assert (idleall >= 0);
2194 assert (idlemax [i] >= idlecnt [i]);
2195 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2196#endif
2197 }
2198
2199#if EV_FORK_ENABLE
2200 assert (forkmax >= forkcnt);
2201 array_verify (EV_A_ (W *)forks, forkcnt);
2202#endif
2203
2204#if EV_CLEANUP_ENABLE
2205 assert (cleanupmax >= cleanupcnt);
2206 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2207#endif
2208
2209#if EV_ASYNC_ENABLE
2210 assert (asyncmax >= asynccnt);
2211 array_verify (EV_A_ (W *)asyncs, asynccnt);
2212#endif
2213
2214#if EV_PREPARE_ENABLE
2215 assert (preparemax >= preparecnt);
2216 array_verify (EV_A_ (W *)prepares, preparecnt);
2217#endif
2218
2219#if EV_CHECK_ENABLE
2220 assert (checkmax >= checkcnt);
2221 array_verify (EV_A_ (W *)checks, checkcnt);
2222#endif
2223
2224# if 0
2225#if EV_CHILD_ENABLE
2226 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2227 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2228#endif
2229# endif
2230#endif
2231}
1269#endif 2232#endif
1270 2233
1271#if EV_MULTIPLICITY 2234#if EV_MULTIPLICITY
1272struct ev_loop * 2235struct ev_loop * ecb_cold
1273ev_default_loop_init (unsigned int flags)
1274#else 2236#else
1275int 2237int
2238#endif
1276ev_default_loop (unsigned int flags) 2239ev_default_loop (unsigned int flags)
1277#endif
1278{ 2240{
1279 if (!ev_default_loop_ptr) 2241 if (!ev_default_loop_ptr)
1280 { 2242 {
1281#if EV_MULTIPLICITY 2243#if EV_MULTIPLICITY
1282 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2244 EV_P = ev_default_loop_ptr = &default_loop_struct;
1283#else 2245#else
1284 ev_default_loop_ptr = 1; 2246 ev_default_loop_ptr = 1;
1285#endif 2247#endif
1286 2248
1287 loop_init (EV_A_ flags); 2249 loop_init (EV_A_ flags);
1288 2250
1289 if (ev_backend (EV_A)) 2251 if (ev_backend (EV_A))
1290 { 2252 {
1291#ifndef _WIN32 2253#if EV_CHILD_ENABLE
1292 ev_signal_init (&childev, childcb, SIGCHLD); 2254 ev_signal_init (&childev, childcb, SIGCHLD);
1293 ev_set_priority (&childev, EV_MAXPRI); 2255 ev_set_priority (&childev, EV_MAXPRI);
1294 ev_signal_start (EV_A_ &childev); 2256 ev_signal_start (EV_A_ &childev);
1295 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2257 ev_unref (EV_A); /* child watcher should not keep loop alive */
1296#endif 2258#endif
… …
1301 2263
1302 return ev_default_loop_ptr; 2264 return ev_default_loop_ptr;
1303} 2265}
1304 2266
1305void 2267void
1306ev_default_destroy (void) 2268ev_loop_fork (EV_P)
1307{ 2269{
1308#if EV_MULTIPLICITY
1309 struct ev_loop *loop = ev_default_loop_ptr;
1310#endif
1311
1312#ifndef _WIN32
1313 ev_ref (EV_A); /* child watcher */
1314 ev_signal_stop (EV_A_ &childev);
1315#endif
1316
1317 loop_destroy (EV_A);
1318}
1319
1320void
1321ev_default_fork (void)
1322{
1323#if EV_MULTIPLICITY
1324 struct ev_loop *loop = ev_default_loop_ptr;
1325#endif
1326
1327 if (backend)
1328 postfork = 1; /* must be in line with ev_loop_fork */ 2270 postfork = 1; /* must be in line with ev_default_fork */
1329} 2271}
1330 2272
1331/*****************************************************************************/ 2273/*****************************************************************************/
1332 2274
1333void 2275void
1334ev_invoke (EV_P_ void *w, int revents) 2276ev_invoke (EV_P_ void *w, int revents)
1335{ 2277{
1336 EV_CB_INVOKE ((W)w, revents); 2278 EV_CB_INVOKE ((W)w, revents);
1337} 2279}
1338 2280
1339void inline_speed 2281unsigned int
1340call_pending (EV_P) 2282ev_pending_count (EV_P)
2283{
2284 int pri;
2285 unsigned int count = 0;
2286
2287 for (pri = NUMPRI; pri--; )
2288 count += pendingcnt [pri];
2289
2290 return count;
2291}
2292
2293void noinline
2294ev_invoke_pending (EV_P)
1341{ 2295{
1342 int pri; 2296 int pri;
1343 2297
1344 for (pri = NUMPRI; pri--; ) 2298 for (pri = NUMPRI; pri--; )
1345 while (pendingcnt [pri]) 2299 while (pendingcnt [pri])
1346 { 2300 {
1347 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2301 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1348 2302
1349 if (expect_true (p->w))
1350 {
1351 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1352
1353 p->w->pending = 0; 2303 p->w->pending = 0;
1354 EV_CB_INVOKE (p->w, p->events); 2304 EV_CB_INVOKE (p->w, p->events);
1355 } 2305 EV_FREQUENT_CHECK;
1356 } 2306 }
1357} 2307}
1358 2308
1359void inline_size
1360timers_reify (EV_P)
1361{
1362 while (timercnt && ((WT)timers [0])->at <= mn_now)
1363 {
1364 ev_timer *w = (ev_timer *)timers [0];
1365
1366 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1367
1368 /* first reschedule or stop timer */
1369 if (w->repeat)
1370 {
1371 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1372
1373 ((WT)w)->at += w->repeat;
1374 if (((WT)w)->at < mn_now)
1375 ((WT)w)->at = mn_now;
1376
1377 downheap (timers, timercnt, 0);
1378 }
1379 else
1380 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1381
1382 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1383 }
1384}
1385
1386#if EV_PERIODIC_ENABLE
1387void inline_size
1388periodics_reify (EV_P)
1389{
1390 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1391 {
1392 ev_periodic *w = (ev_periodic *)periodics [0];
1393
1394 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1395
1396 /* first reschedule or stop timer */
1397 if (w->reschedule_cb)
1398 {
1399 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1400 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1401 downheap (periodics, periodiccnt, 0);
1402 }
1403 else if (w->interval)
1404 {
1405 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1406 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1407 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1408 downheap (periodics, periodiccnt, 0);
1409 }
1410 else
1411 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1412
1413 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1414 }
1415}
1416
1417static void noinline
1418periodics_reschedule (EV_P)
1419{
1420 int i;
1421
1422 /* adjust periodics after time jump */
1423 for (i = 0; i < periodiccnt; ++i)
1424 {
1425 ev_periodic *w = (ev_periodic *)periodics [i];
1426
1427 if (w->reschedule_cb)
1428 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1429 else if (w->interval)
1430 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1431 }
1432
1433 /* now rebuild the heap */
1434 for (i = periodiccnt >> 1; i--; )
1435 downheap (periodics, periodiccnt, i);
1436}
1437#endif
1438
1439#if EV_IDLE_ENABLE 2309#if EV_IDLE_ENABLE
1440void inline_size 2310/* make idle watchers pending. this handles the "call-idle */
2311/* only when higher priorities are idle" logic */
2312inline_size void
1441idle_reify (EV_P) 2313idle_reify (EV_P)
1442{ 2314{
1443 if (expect_false (idleall)) 2315 if (expect_false (idleall))
1444 { 2316 {
1445 int pri; 2317 int pri;
… …
1457 } 2329 }
1458 } 2330 }
1459} 2331}
1460#endif 2332#endif
1461 2333
1462void inline_speed 2334/* make timers pending */
2335inline_size void
2336timers_reify (EV_P)
2337{
2338 EV_FREQUENT_CHECK;
2339
2340 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2341 {
2342 do
2343 {
2344 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2345
2346 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2347
2348 /* first reschedule or stop timer */
2349 if (w->repeat)
2350 {
2351 ev_at (w) += w->repeat;
2352 if (ev_at (w) < mn_now)
2353 ev_at (w) = mn_now;
2354
2355 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2356
2357 ANHE_at_cache (timers [HEAP0]);
2358 downheap (timers, timercnt, HEAP0);
2359 }
2360 else
2361 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2362
2363 EV_FREQUENT_CHECK;
2364 feed_reverse (EV_A_ (W)w);
2365 }
2366 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2367
2368 feed_reverse_done (EV_A_ EV_TIMER);
2369 }
2370}
2371
2372#if EV_PERIODIC_ENABLE
2373
2374static void noinline
2375periodic_recalc (EV_P_ ev_periodic *w)
2376{
2377 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2378 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2379
2380 /* the above almost always errs on the low side */
2381 while (at <= ev_rt_now)
2382 {
2383 ev_tstamp nat = at + w->interval;
2384
2385 /* when resolution fails us, we use ev_rt_now */
2386 if (expect_false (nat == at))
2387 {
2388 at = ev_rt_now;
2389 break;
2390 }
2391
2392 at = nat;
2393 }
2394
2395 ev_at (w) = at;
2396}
2397
2398/* make periodics pending */
2399inline_size void
2400periodics_reify (EV_P)
2401{
2402 EV_FREQUENT_CHECK;
2403
2404 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2405 {
2406 int feed_count = 0;
2407
2408 do
2409 {
2410 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2411
2412 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2413
2414 /* first reschedule or stop timer */
2415 if (w->reschedule_cb)
2416 {
2417 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2418
2419 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2420
2421 ANHE_at_cache (periodics [HEAP0]);
2422 downheap (periodics, periodiccnt, HEAP0);
2423 }
2424 else if (w->interval)
2425 {
2426 periodic_recalc (EV_A_ w);
2427 ANHE_at_cache (periodics [HEAP0]);
2428 downheap (periodics, periodiccnt, HEAP0);
2429 }
2430 else
2431 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2432
2433 EV_FREQUENT_CHECK;
2434 feed_reverse (EV_A_ (W)w);
2435 }
2436 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2437
2438 feed_reverse_done (EV_A_ EV_PERIODIC);
2439 }
2440}
2441
2442/* simply recalculate all periodics */
2443/* TODO: maybe ensure that at least one event happens when jumping forward? */
2444static void noinline ecb_cold
2445periodics_reschedule (EV_P)
2446{
2447 int i;
2448
2449 /* adjust periodics after time jump */
2450 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2451 {
2452 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2453
2454 if (w->reschedule_cb)
2455 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2456 else if (w->interval)
2457 periodic_recalc (EV_A_ w);
2458
2459 ANHE_at_cache (periodics [i]);
2460 }
2461
2462 reheap (periodics, periodiccnt);
2463}
2464#endif
2465
2466/* adjust all timers by a given offset */
2467static void noinline ecb_cold
2468timers_reschedule (EV_P_ ev_tstamp adjust)
2469{
2470 int i;
2471
2472 for (i = 0; i < timercnt; ++i)
2473 {
2474 ANHE *he = timers + i + HEAP0;
2475 ANHE_w (*he)->at += adjust;
2476 ANHE_at_cache (*he);
2477 }
2478}
2479
2480/* fetch new monotonic and realtime times from the kernel */
2481/* also detect if there was a timejump, and act accordingly */
2482inline_speed void
1463time_update (EV_P_ ev_tstamp max_block) 2483time_update (EV_P_ ev_tstamp max_block)
1464{ 2484{
1465 int i;
1466
1467#if EV_USE_MONOTONIC 2485#if EV_USE_MONOTONIC
1468 if (expect_true (have_monotonic)) 2486 if (expect_true (have_monotonic))
1469 { 2487 {
2488 int i;
1470 ev_tstamp odiff = rtmn_diff; 2489 ev_tstamp odiff = rtmn_diff;
1471 2490
1472 mn_now = get_clock (); 2491 mn_now = get_clock ();
1473 2492
1474 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2493 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1490 * doesn't hurt either as we only do this on time-jumps or 2509 * doesn't hurt either as we only do this on time-jumps or
1491 * in the unlikely event of having been preempted here. 2510 * in the unlikely event of having been preempted here.
1492 */ 2511 */
1493 for (i = 4; --i; ) 2512 for (i = 4; --i; )
1494 { 2513 {
2514 ev_tstamp diff;
1495 rtmn_diff = ev_rt_now - mn_now; 2515 rtmn_diff = ev_rt_now - mn_now;
1496 2516
1497 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2517 diff = odiff - rtmn_diff;
2518
2519 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1498 return; /* all is well */ 2520 return; /* all is well */
1499 2521
1500 ev_rt_now = ev_time (); 2522 ev_rt_now = ev_time ();
1501 mn_now = get_clock (); 2523 mn_now = get_clock ();
1502 now_floor = mn_now; 2524 now_floor = mn_now;
1503 } 2525 }
1504 2526
2527 /* no timer adjustment, as the monotonic clock doesn't jump */
2528 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1505# if EV_PERIODIC_ENABLE 2529# if EV_PERIODIC_ENABLE
1506 periodics_reschedule (EV_A); 2530 periodics_reschedule (EV_A);
1507# endif 2531# endif
1508 /* no timer adjustment, as the monotonic clock doesn't jump */
1509 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1510 } 2532 }
1511 else 2533 else
1512#endif 2534#endif
1513 { 2535 {
1514 ev_rt_now = ev_time (); 2536 ev_rt_now = ev_time ();
1515 2537
1516 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2538 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1517 { 2539 {
2540 /* adjust timers. this is easy, as the offset is the same for all of them */
2541 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1518#if EV_PERIODIC_ENABLE 2542#if EV_PERIODIC_ENABLE
1519 periodics_reschedule (EV_A); 2543 periodics_reschedule (EV_A);
1520#endif 2544#endif
1521 /* adjust timers. this is easy, as the offset is the same for all of them */
1522 for (i = 0; i < timercnt; ++i)
1523 ((WT)timers [i])->at += ev_rt_now - mn_now;
1524 } 2545 }
1525 2546
1526 mn_now = ev_rt_now; 2547 mn_now = ev_rt_now;
1527 } 2548 }
1528} 2549}
1529 2550
1530void 2551void
1531ev_ref (EV_P)
1532{
1533 ++activecnt;
1534}
1535
1536void
1537ev_unref (EV_P)
1538{
1539 --activecnt;
1540}
1541
1542static int loop_done;
1543
1544void
1545ev_loop (EV_P_ int flags) 2552ev_run (EV_P_ int flags)
1546{ 2553{
1547 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2554#if EV_FEATURE_API
1548 ? EVUNLOOP_ONE 2555 ++loop_depth;
1549 : EVUNLOOP_CANCEL; 2556#endif
1550 2557
2558 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2559
2560 loop_done = EVBREAK_CANCEL;
2561
1551 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2562 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1552 2563
1553 do 2564 do
1554 { 2565 {
2566#if EV_VERIFY >= 2
2567 ev_verify (EV_A);
2568#endif
2569
1555#ifndef _WIN32 2570#ifndef _WIN32
1556 if (expect_false (curpid)) /* penalise the forking check even more */ 2571 if (expect_false (curpid)) /* penalise the forking check even more */
1557 if (expect_false (getpid () != curpid)) 2572 if (expect_false (getpid () != curpid))
1558 { 2573 {
1559 curpid = getpid (); 2574 curpid = getpid ();
… …
1565 /* we might have forked, so queue fork handlers */ 2580 /* we might have forked, so queue fork handlers */
1566 if (expect_false (postfork)) 2581 if (expect_false (postfork))
1567 if (forkcnt) 2582 if (forkcnt)
1568 { 2583 {
1569 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2584 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1570 call_pending (EV_A); 2585 EV_INVOKE_PENDING;
1571 } 2586 }
1572#endif 2587#endif
1573 2588
2589#if EV_PREPARE_ENABLE
1574 /* queue prepare watchers (and execute them) */ 2590 /* queue prepare watchers (and execute them) */
1575 if (expect_false (preparecnt)) 2591 if (expect_false (preparecnt))
1576 { 2592 {
1577 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2593 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1578 call_pending (EV_A); 2594 EV_INVOKE_PENDING;
1579 } 2595 }
2596#endif
1580 2597
1581 if (expect_false (!activecnt)) 2598 if (expect_false (loop_done))
1582 break; 2599 break;
1583 2600
1584 /* we might have forked, so reify kernel state if necessary */ 2601 /* we might have forked, so reify kernel state if necessary */
1585 if (expect_false (postfork)) 2602 if (expect_false (postfork))
1586 loop_fork (EV_A); 2603 loop_fork (EV_A);
… …
1591 /* calculate blocking time */ 2608 /* calculate blocking time */
1592 { 2609 {
1593 ev_tstamp waittime = 0.; 2610 ev_tstamp waittime = 0.;
1594 ev_tstamp sleeptime = 0.; 2611 ev_tstamp sleeptime = 0.;
1595 2612
2613 /* remember old timestamp for io_blocktime calculation */
2614 ev_tstamp prev_mn_now = mn_now;
2615
2616 /* update time to cancel out callback processing overhead */
2617 time_update (EV_A_ 1e100);
2618
2619 /* from now on, we want a pipe-wake-up */
2620 pipe_write_wanted = 1;
2621
2622 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */
2623
1596 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2624 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1597 { 2625 {
1598 /* update time to cancel out callback processing overhead */
1599 time_update (EV_A_ 1e100);
1600
1601 waittime = MAX_BLOCKTIME; 2626 waittime = MAX_BLOCKTIME;
1602 2627
1603 if (timercnt) 2628 if (timercnt)
1604 { 2629 {
1605 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2630 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1606 if (waittime > to) waittime = to; 2631 if (waittime > to) waittime = to;
1607 } 2632 }
1608 2633
1609#if EV_PERIODIC_ENABLE 2634#if EV_PERIODIC_ENABLE
1610 if (periodiccnt) 2635 if (periodiccnt)
1611 { 2636 {
1612 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2637 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1613 if (waittime > to) waittime = to; 2638 if (waittime > to) waittime = to;
1614 } 2639 }
1615#endif 2640#endif
1616 2641
2642 /* don't let timeouts decrease the waittime below timeout_blocktime */
1617 if (expect_false (waittime < timeout_blocktime)) 2643 if (expect_false (waittime < timeout_blocktime))
1618 waittime = timeout_blocktime; 2644 waittime = timeout_blocktime;
1619 2645
1620 sleeptime = waittime - backend_fudge; 2646 /* at this point, we NEED to wait, so we have to ensure */
2647 /* to pass a minimum nonzero value to the backend */
2648 if (expect_false (waittime < backend_mintime))
2649 waittime = backend_mintime;
1621 2650
2651 /* extra check because io_blocktime is commonly 0 */
1622 if (expect_true (sleeptime > io_blocktime)) 2652 if (expect_false (io_blocktime))
1623 sleeptime = io_blocktime;
1624
1625 if (sleeptime)
1626 { 2653 {
2654 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2655
2656 if (sleeptime > waittime - backend_mintime)
2657 sleeptime = waittime - backend_mintime;
2658
2659 if (expect_true (sleeptime > 0.))
2660 {
1627 ev_sleep (sleeptime); 2661 ev_sleep (sleeptime);
1628 waittime -= sleeptime; 2662 waittime -= sleeptime;
2663 }
1629 } 2664 }
1630 } 2665 }
1631 2666
2667#if EV_FEATURE_API
1632 ++loop_count; 2668 ++loop_count;
2669#endif
2670 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1633 backend_poll (EV_A_ waittime); 2671 backend_poll (EV_A_ waittime);
2672 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2673
2674 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2675
2676 if (pipe_write_skipped)
2677 {
2678 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2679 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2680 }
2681
1634 2682
1635 /* update ev_rt_now, do magic */ 2683 /* update ev_rt_now, do magic */
1636 time_update (EV_A_ waittime + sleeptime); 2684 time_update (EV_A_ waittime + sleeptime);
1637 } 2685 }
1638 2686
… …
1645#if EV_IDLE_ENABLE 2693#if EV_IDLE_ENABLE
1646 /* queue idle watchers unless other events are pending */ 2694 /* queue idle watchers unless other events are pending */
1647 idle_reify (EV_A); 2695 idle_reify (EV_A);
1648#endif 2696#endif
1649 2697
2698#if EV_CHECK_ENABLE
1650 /* queue check watchers, to be executed first */ 2699 /* queue check watchers, to be executed first */
1651 if (expect_false (checkcnt)) 2700 if (expect_false (checkcnt))
1652 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2701 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2702#endif
1653 2703
1654 call_pending (EV_A); 2704 EV_INVOKE_PENDING;
1655
1656 } 2705 }
1657 while (expect_true (activecnt && !loop_done)); 2706 while (expect_true (
2707 activecnt
2708 && !loop_done
2709 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2710 ));
1658 2711
1659 if (loop_done == EVUNLOOP_ONE) 2712 if (loop_done == EVBREAK_ONE)
1660 loop_done = EVUNLOOP_CANCEL; 2713 loop_done = EVBREAK_CANCEL;
2714
2715#if EV_FEATURE_API
2716 --loop_depth;
2717#endif
1661} 2718}
1662 2719
1663void 2720void
1664ev_unloop (EV_P_ int how) 2721ev_break (EV_P_ int how)
1665{ 2722{
1666 loop_done = how; 2723 loop_done = how;
1667} 2724}
1668 2725
2726void
2727ev_ref (EV_P)
2728{
2729 ++activecnt;
2730}
2731
2732void
2733ev_unref (EV_P)
2734{
2735 --activecnt;
2736}
2737
2738void
2739ev_now_update (EV_P)
2740{
2741 time_update (EV_A_ 1e100);
2742}
2743
2744void
2745ev_suspend (EV_P)
2746{
2747 ev_now_update (EV_A);
2748}
2749
2750void
2751ev_resume (EV_P)
2752{
2753 ev_tstamp mn_prev = mn_now;
2754
2755 ev_now_update (EV_A);
2756 timers_reschedule (EV_A_ mn_now - mn_prev);
2757#if EV_PERIODIC_ENABLE
2758 /* TODO: really do this? */
2759 periodics_reschedule (EV_A);
2760#endif
2761}
2762
1669/*****************************************************************************/ 2763/*****************************************************************************/
2764/* singly-linked list management, used when the expected list length is short */
1670 2765
1671void inline_size 2766inline_size void
1672wlist_add (WL *head, WL elem) 2767wlist_add (WL *head, WL elem)
1673{ 2768{
1674 elem->next = *head; 2769 elem->next = *head;
1675 *head = elem; 2770 *head = elem;
1676} 2771}
1677 2772
1678void inline_size 2773inline_size void
1679wlist_del (WL *head, WL elem) 2774wlist_del (WL *head, WL elem)
1680{ 2775{
1681 while (*head) 2776 while (*head)
1682 { 2777 {
1683 if (*head == elem) 2778 if (expect_true (*head == elem))
1684 { 2779 {
1685 *head = elem->next; 2780 *head = elem->next;
1686 return; 2781 break;
1687 } 2782 }
1688 2783
1689 head = &(*head)->next; 2784 head = &(*head)->next;
1690 } 2785 }
1691} 2786}
1692 2787
1693void inline_speed 2788/* internal, faster, version of ev_clear_pending */
2789inline_speed void
1694clear_pending (EV_P_ W w) 2790clear_pending (EV_P_ W w)
1695{ 2791{
1696 if (w->pending) 2792 if (w->pending)
1697 { 2793 {
1698 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2794 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1699 w->pending = 0; 2795 w->pending = 0;
1700 } 2796 }
1701} 2797}
1702 2798
1703int 2799int
… …
1707 int pending = w_->pending; 2803 int pending = w_->pending;
1708 2804
1709 if (expect_true (pending)) 2805 if (expect_true (pending))
1710 { 2806 {
1711 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2807 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2808 p->w = (W)&pending_w;
1712 w_->pending = 0; 2809 w_->pending = 0;
1713 p->w = 0;
1714 return p->events; 2810 return p->events;
1715 } 2811 }
1716 else 2812 else
1717 return 0; 2813 return 0;
1718} 2814}
1719 2815
1720void inline_size 2816inline_size void
1721pri_adjust (EV_P_ W w) 2817pri_adjust (EV_P_ W w)
1722{ 2818{
1723 int pri = w->priority; 2819 int pri = ev_priority (w);
1724 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2820 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1725 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2821 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1726 w->priority = pri; 2822 ev_set_priority (w, pri);
1727} 2823}
1728 2824
1729void inline_speed 2825inline_speed void
1730ev_start (EV_P_ W w, int active) 2826ev_start (EV_P_ W w, int active)
1731{ 2827{
1732 pri_adjust (EV_A_ w); 2828 pri_adjust (EV_A_ w);
1733 w->active = active; 2829 w->active = active;
1734 ev_ref (EV_A); 2830 ev_ref (EV_A);
1735} 2831}
1736 2832
1737void inline_size 2833inline_size void
1738ev_stop (EV_P_ W w) 2834ev_stop (EV_P_ W w)
1739{ 2835{
1740 ev_unref (EV_A); 2836 ev_unref (EV_A);
1741 w->active = 0; 2837 w->active = 0;
1742} 2838}
… …
1749 int fd = w->fd; 2845 int fd = w->fd;
1750 2846
1751 if (expect_false (ev_is_active (w))) 2847 if (expect_false (ev_is_active (w)))
1752 return; 2848 return;
1753 2849
1754 assert (("ev_io_start called with negative fd", fd >= 0)); 2850 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2851 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2852
2853 EV_FREQUENT_CHECK;
1755 2854
1756 ev_start (EV_A_ (W)w, 1); 2855 ev_start (EV_A_ (W)w, 1);
1757 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2856 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1758 wlist_add (&anfds[fd].head, (WL)w); 2857 wlist_add (&anfds[fd].head, (WL)w);
1759 2858
1760 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2859 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1761 w->events &= ~EV_IOFDSET; 2860 w->events &= ~EV__IOFDSET;
2861
2862 EV_FREQUENT_CHECK;
1762} 2863}
1763 2864
1764void noinline 2865void noinline
1765ev_io_stop (EV_P_ ev_io *w) 2866ev_io_stop (EV_P_ ev_io *w)
1766{ 2867{
1767 clear_pending (EV_A_ (W)w); 2868 clear_pending (EV_A_ (W)w);
1768 if (expect_false (!ev_is_active (w))) 2869 if (expect_false (!ev_is_active (w)))
1769 return; 2870 return;
1770 2871
1771 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2872 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2873
2874 EV_FREQUENT_CHECK;
1772 2875
1773 wlist_del (&anfds[w->fd].head, (WL)w); 2876 wlist_del (&anfds[w->fd].head, (WL)w);
1774 ev_stop (EV_A_ (W)w); 2877 ev_stop (EV_A_ (W)w);
1775 2878
1776 fd_change (EV_A_ w->fd, 1); 2879 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2880
2881 EV_FREQUENT_CHECK;
1777} 2882}
1778 2883
1779void noinline 2884void noinline
1780ev_timer_start (EV_P_ ev_timer *w) 2885ev_timer_start (EV_P_ ev_timer *w)
1781{ 2886{
1782 if (expect_false (ev_is_active (w))) 2887 if (expect_false (ev_is_active (w)))
1783 return; 2888 return;
1784 2889
1785 ((WT)w)->at += mn_now; 2890 ev_at (w) += mn_now;
1786 2891
1787 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2892 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1788 2893
2894 EV_FREQUENT_CHECK;
2895
2896 ++timercnt;
1789 ev_start (EV_A_ (W)w, ++timercnt); 2897 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1790 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2898 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1791 timers [timercnt - 1] = (WT)w; 2899 ANHE_w (timers [ev_active (w)]) = (WT)w;
1792 upheap (timers, timercnt - 1); 2900 ANHE_at_cache (timers [ev_active (w)]);
2901 upheap (timers, ev_active (w));
1793 2902
2903 EV_FREQUENT_CHECK;
2904
1794 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2905 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1795} 2906}
1796 2907
1797void noinline 2908void noinline
1798ev_timer_stop (EV_P_ ev_timer *w) 2909ev_timer_stop (EV_P_ ev_timer *w)
1799{ 2910{
1800 clear_pending (EV_A_ (W)w); 2911 clear_pending (EV_A_ (W)w);
1801 if (expect_false (!ev_is_active (w))) 2912 if (expect_false (!ev_is_active (w)))
1802 return; 2913 return;
1803 2914
1804 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2915 EV_FREQUENT_CHECK;
1805 2916
1806 { 2917 {
1807 int active = ((W)w)->active; 2918 int active = ev_active (w);
1808 2919
2920 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2921
2922 --timercnt;
2923
1809 if (expect_true (--active < --timercnt)) 2924 if (expect_true (active < timercnt + HEAP0))
1810 { 2925 {
1811 timers [active] = timers [timercnt]; 2926 timers [active] = timers [timercnt + HEAP0];
1812 adjustheap (timers, timercnt, active); 2927 adjustheap (timers, timercnt, active);
1813 } 2928 }
1814 } 2929 }
1815 2930
1816 ((WT)w)->at -= mn_now; 2931 ev_at (w) -= mn_now;
1817 2932
1818 ev_stop (EV_A_ (W)w); 2933 ev_stop (EV_A_ (W)w);
2934
2935 EV_FREQUENT_CHECK;
1819} 2936}
1820 2937
1821void noinline 2938void noinline
1822ev_timer_again (EV_P_ ev_timer *w) 2939ev_timer_again (EV_P_ ev_timer *w)
1823{ 2940{
2941 EV_FREQUENT_CHECK;
2942
1824 if (ev_is_active (w)) 2943 if (ev_is_active (w))
1825 { 2944 {
1826 if (w->repeat) 2945 if (w->repeat)
1827 { 2946 {
1828 ((WT)w)->at = mn_now + w->repeat; 2947 ev_at (w) = mn_now + w->repeat;
2948 ANHE_at_cache (timers [ev_active (w)]);
1829 adjustheap (timers, timercnt, ((W)w)->active - 1); 2949 adjustheap (timers, timercnt, ev_active (w));
1830 } 2950 }
1831 else 2951 else
1832 ev_timer_stop (EV_A_ w); 2952 ev_timer_stop (EV_A_ w);
1833 } 2953 }
1834 else if (w->repeat) 2954 else if (w->repeat)
1835 { 2955 {
1836 w->at = w->repeat; 2956 ev_at (w) = w->repeat;
1837 ev_timer_start (EV_A_ w); 2957 ev_timer_start (EV_A_ w);
1838 } 2958 }
2959
2960 EV_FREQUENT_CHECK;
2961}
2962
2963ev_tstamp
2964ev_timer_remaining (EV_P_ ev_timer *w)
2965{
2966 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1839} 2967}
1840 2968
1841#if EV_PERIODIC_ENABLE 2969#if EV_PERIODIC_ENABLE
1842void noinline 2970void noinline
1843ev_periodic_start (EV_P_ ev_periodic *w) 2971ev_periodic_start (EV_P_ ev_periodic *w)
1844{ 2972{
1845 if (expect_false (ev_is_active (w))) 2973 if (expect_false (ev_is_active (w)))
1846 return; 2974 return;
1847 2975
1848 if (w->reschedule_cb) 2976 if (w->reschedule_cb)
1849 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2977 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1850 else if (w->interval) 2978 else if (w->interval)
1851 { 2979 {
1852 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2980 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1853 /* this formula differs from the one in periodic_reify because we do not always round up */ 2981 periodic_recalc (EV_A_ w);
1854 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1855 } 2982 }
1856 else 2983 else
1857 ((WT)w)->at = w->offset; 2984 ev_at (w) = w->offset;
1858 2985
2986 EV_FREQUENT_CHECK;
2987
2988 ++periodiccnt;
1859 ev_start (EV_A_ (W)w, ++periodiccnt); 2989 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1860 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2990 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1861 periodics [periodiccnt - 1] = (WT)w; 2991 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1862 upheap (periodics, periodiccnt - 1); 2992 ANHE_at_cache (periodics [ev_active (w)]);
2993 upheap (periodics, ev_active (w));
1863 2994
2995 EV_FREQUENT_CHECK;
2996
1864 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2997 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1865} 2998}
1866 2999
1867void noinline 3000void noinline
1868ev_periodic_stop (EV_P_ ev_periodic *w) 3001ev_periodic_stop (EV_P_ ev_periodic *w)
1869{ 3002{
1870 clear_pending (EV_A_ (W)w); 3003 clear_pending (EV_A_ (W)w);
1871 if (expect_false (!ev_is_active (w))) 3004 if (expect_false (!ev_is_active (w)))
1872 return; 3005 return;
1873 3006
1874 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 3007 EV_FREQUENT_CHECK;
1875 3008
1876 { 3009 {
1877 int active = ((W)w)->active; 3010 int active = ev_active (w);
1878 3011
3012 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3013
3014 --periodiccnt;
3015
1879 if (expect_true (--active < --periodiccnt)) 3016 if (expect_true (active < periodiccnt + HEAP0))
1880 { 3017 {
1881 periodics [active] = periodics [periodiccnt]; 3018 periodics [active] = periodics [periodiccnt + HEAP0];
1882 adjustheap (periodics, periodiccnt, active); 3019 adjustheap (periodics, periodiccnt, active);
1883 } 3020 }
1884 } 3021 }
1885 3022
1886 ev_stop (EV_A_ (W)w); 3023 ev_stop (EV_A_ (W)w);
3024
3025 EV_FREQUENT_CHECK;
1887} 3026}
1888 3027
1889void noinline 3028void noinline
1890ev_periodic_again (EV_P_ ev_periodic *w) 3029ev_periodic_again (EV_P_ ev_periodic *w)
1891{ 3030{
… …
1897 3036
1898#ifndef SA_RESTART 3037#ifndef SA_RESTART
1899# define SA_RESTART 0 3038# define SA_RESTART 0
1900#endif 3039#endif
1901 3040
3041#if EV_SIGNAL_ENABLE
3042
1902void noinline 3043void noinline
1903ev_signal_start (EV_P_ ev_signal *w) 3044ev_signal_start (EV_P_ ev_signal *w)
1904{ 3045{
1905#if EV_MULTIPLICITY
1906 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1907#endif
1908 if (expect_false (ev_is_active (w))) 3046 if (expect_false (ev_is_active (w)))
1909 return; 3047 return;
1910 3048
1911 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3049 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1912 3050
1913 evpipe_init (EV_A); 3051#if EV_MULTIPLICITY
3052 assert (("libev: a signal must not be attached to two different loops",
3053 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1914 3054
3055 signals [w->signum - 1].loop = EV_A;
3056#endif
3057
3058 EV_FREQUENT_CHECK;
3059
3060#if EV_USE_SIGNALFD
3061 if (sigfd == -2)
1915 { 3062 {
1916#ifndef _WIN32 3063 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1917 sigset_t full, prev; 3064 if (sigfd < 0 && errno == EINVAL)
1918 sigfillset (&full); 3065 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1919 sigprocmask (SIG_SETMASK, &full, &prev);
1920#endif
1921 3066
1922 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3067 if (sigfd >= 0)
3068 {
3069 fd_intern (sigfd); /* doing it twice will not hurt */
1923 3070
1924#ifndef _WIN32 3071 sigemptyset (&sigfd_set);
1925 sigprocmask (SIG_SETMASK, &prev, 0); 3072
1926#endif 3073 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3074 ev_set_priority (&sigfd_w, EV_MAXPRI);
3075 ev_io_start (EV_A_ &sigfd_w);
3076 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3077 }
1927 } 3078 }
3079
3080 if (sigfd >= 0)
3081 {
3082 /* TODO: check .head */
3083 sigaddset (&sigfd_set, w->signum);
3084 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3085
3086 signalfd (sigfd, &sigfd_set, 0);
3087 }
3088#endif
1928 3089
1929 ev_start (EV_A_ (W)w, 1); 3090 ev_start (EV_A_ (W)w, 1);
1930 wlist_add (&signals [w->signum - 1].head, (WL)w); 3091 wlist_add (&signals [w->signum - 1].head, (WL)w);
1931 3092
1932 if (!((WL)w)->next) 3093 if (!((WL)w)->next)
3094# if EV_USE_SIGNALFD
3095 if (sigfd < 0) /*TODO*/
3096# endif
1933 { 3097 {
1934#if _WIN32 3098# ifdef _WIN32
3099 evpipe_init (EV_A);
3100
1935 signal (w->signum, ev_sighandler); 3101 signal (w->signum, ev_sighandler);
1936#else 3102# else
1937 struct sigaction sa; 3103 struct sigaction sa;
3104
3105 evpipe_init (EV_A);
3106
1938 sa.sa_handler = ev_sighandler; 3107 sa.sa_handler = ev_sighandler;
1939 sigfillset (&sa.sa_mask); 3108 sigfillset (&sa.sa_mask);
1940 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3109 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1941 sigaction (w->signum, &sa, 0); 3110 sigaction (w->signum, &sa, 0);
3111
3112 if (origflags & EVFLAG_NOSIGMASK)
3113 {
3114 sigemptyset (&sa.sa_mask);
3115 sigaddset (&sa.sa_mask, w->signum);
3116 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3117 }
1942#endif 3118#endif
1943 } 3119 }
3120
3121 EV_FREQUENT_CHECK;
1944} 3122}
1945 3123
1946void noinline 3124void noinline
1947ev_signal_stop (EV_P_ ev_signal *w) 3125ev_signal_stop (EV_P_ ev_signal *w)
1948{ 3126{
1949 clear_pending (EV_A_ (W)w); 3127 clear_pending (EV_A_ (W)w);
1950 if (expect_false (!ev_is_active (w))) 3128 if (expect_false (!ev_is_active (w)))
1951 return; 3129 return;
1952 3130
3131 EV_FREQUENT_CHECK;
3132
1953 wlist_del (&signals [w->signum - 1].head, (WL)w); 3133 wlist_del (&signals [w->signum - 1].head, (WL)w);
1954 ev_stop (EV_A_ (W)w); 3134 ev_stop (EV_A_ (W)w);
1955 3135
1956 if (!signals [w->signum - 1].head) 3136 if (!signals [w->signum - 1].head)
3137 {
3138#if EV_MULTIPLICITY
3139 signals [w->signum - 1].loop = 0; /* unattach from signal */
3140#endif
3141#if EV_USE_SIGNALFD
3142 if (sigfd >= 0)
3143 {
3144 sigset_t ss;
3145
3146 sigemptyset (&ss);
3147 sigaddset (&ss, w->signum);
3148 sigdelset (&sigfd_set, w->signum);
3149
3150 signalfd (sigfd, &sigfd_set, 0);
3151 sigprocmask (SIG_UNBLOCK, &ss, 0);
3152 }
3153 else
3154#endif
1957 signal (w->signum, SIG_DFL); 3155 signal (w->signum, SIG_DFL);
3156 }
3157
3158 EV_FREQUENT_CHECK;
1958} 3159}
3160
3161#endif
3162
3163#if EV_CHILD_ENABLE
1959 3164
1960void 3165void
1961ev_child_start (EV_P_ ev_child *w) 3166ev_child_start (EV_P_ ev_child *w)
1962{ 3167{
1963#if EV_MULTIPLICITY 3168#if EV_MULTIPLICITY
1964 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3169 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1965#endif 3170#endif
1966 if (expect_false (ev_is_active (w))) 3171 if (expect_false (ev_is_active (w)))
1967 return; 3172 return;
1968 3173
3174 EV_FREQUENT_CHECK;
3175
1969 ev_start (EV_A_ (W)w, 1); 3176 ev_start (EV_A_ (W)w, 1);
1970 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3177 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
3178
3179 EV_FREQUENT_CHECK;
1971} 3180}
1972 3181
1973void 3182void
1974ev_child_stop (EV_P_ ev_child *w) 3183ev_child_stop (EV_P_ ev_child *w)
1975{ 3184{
1976 clear_pending (EV_A_ (W)w); 3185 clear_pending (EV_A_ (W)w);
1977 if (expect_false (!ev_is_active (w))) 3186 if (expect_false (!ev_is_active (w)))
1978 return; 3187 return;
1979 3188
3189 EV_FREQUENT_CHECK;
3190
1980 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3191 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1981 ev_stop (EV_A_ (W)w); 3192 ev_stop (EV_A_ (W)w);
3193
3194 EV_FREQUENT_CHECK;
1982} 3195}
3196
3197#endif
1983 3198
1984#if EV_STAT_ENABLE 3199#if EV_STAT_ENABLE
1985 3200
1986# ifdef _WIN32 3201# ifdef _WIN32
1987# undef lstat 3202# undef lstat
1988# define lstat(a,b) _stati64 (a,b) 3203# define lstat(a,b) _stati64 (a,b)
1989# endif 3204# endif
1990 3205
1991#define DEF_STAT_INTERVAL 5.0074891 3206#define DEF_STAT_INTERVAL 5.0074891
3207#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1992#define MIN_STAT_INTERVAL 0.1074891 3208#define MIN_STAT_INTERVAL 0.1074891
1993 3209
1994static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3210static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1995 3211
1996#if EV_USE_INOTIFY 3212#if EV_USE_INOTIFY
1997# define EV_INOTIFY_BUFSIZE 8192 3213
3214/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3215# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1998 3216
1999static void noinline 3217static void noinline
2000infy_add (EV_P_ ev_stat *w) 3218infy_add (EV_P_ ev_stat *w)
2001{ 3219{
2002 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); 3220 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);
2003 3221
2004 if (w->wd < 0) 3222 if (w->wd >= 0)
3223 {
3224 struct statfs sfs;
3225
3226 /* now local changes will be tracked by inotify, but remote changes won't */
3227 /* unless the filesystem is known to be local, we therefore still poll */
3228 /* also do poll on <2.6.25, but with normal frequency */
3229
3230 if (!fs_2625)
3231 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3232 else if (!statfs (w->path, &sfs)
3233 && (sfs.f_type == 0x1373 /* devfs */
3234 || sfs.f_type == 0xEF53 /* ext2/3 */
3235 || sfs.f_type == 0x3153464a /* jfs */
3236 || sfs.f_type == 0x52654973 /* reiser3 */
3237 || sfs.f_type == 0x01021994 /* tempfs */
3238 || sfs.f_type == 0x58465342 /* xfs */))
3239 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3240 else
3241 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2005 { 3242 }
2006 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3243 else
3244 {
3245 /* can't use inotify, continue to stat */
3246 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2007 3247
2008 /* monitor some parent directory for speedup hints */ 3248 /* if path is not there, monitor some parent directory for speedup hints */
3249 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3250 /* but an efficiency issue only */
2009 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3251 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2010 { 3252 {
2011 char path [4096]; 3253 char path [4096];
2012 strcpy (path, w->path); 3254 strcpy (path, w->path);
2013 3255
… …
2016 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3258 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2017 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3259 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2018 3260
2019 char *pend = strrchr (path, '/'); 3261 char *pend = strrchr (path, '/');
2020 3262
2021 if (!pend) 3263 if (!pend || pend == path)
2022 break; /* whoops, no '/', complain to your admin */ 3264 break;
2023 3265
2024 *pend = 0; 3266 *pend = 0;
2025 w->wd = inotify_add_watch (fs_fd, path, mask); 3267 w->wd = inotify_add_watch (fs_fd, path, mask);
2026 } 3268 }
2027 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3269 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2028 } 3270 }
2029 } 3271 }
2030 else
2031 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2032 3272
2033 if (w->wd >= 0) 3273 if (w->wd >= 0)
2034 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3274 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3275
3276 /* now re-arm timer, if required */
3277 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3278 ev_timer_again (EV_A_ &w->timer);
3279 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2035} 3280}
2036 3281
2037static void noinline 3282static void noinline
2038infy_del (EV_P_ ev_stat *w) 3283infy_del (EV_P_ ev_stat *w)
2039{ 3284{
… …
2042 3287
2043 if (wd < 0) 3288 if (wd < 0)
2044 return; 3289 return;
2045 3290
2046 w->wd = -2; 3291 w->wd = -2;
2047 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3292 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2048 wlist_del (&fs_hash [slot].head, (WL)w); 3293 wlist_del (&fs_hash [slot].head, (WL)w);
2049 3294
2050 /* remove this watcher, if others are watching it, they will rearm */ 3295 /* remove this watcher, if others are watching it, they will rearm */
2051 inotify_rm_watch (fs_fd, wd); 3296 inotify_rm_watch (fs_fd, wd);
2052} 3297}
2053 3298
2054static void noinline 3299static void noinline
2055infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3300infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2056{ 3301{
2057 if (slot < 0) 3302 if (slot < 0)
2058 /* overflow, need to check for all hahs slots */ 3303 /* overflow, need to check for all hash slots */
2059 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3304 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2060 infy_wd (EV_A_ slot, wd, ev); 3305 infy_wd (EV_A_ slot, wd, ev);
2061 else 3306 else
2062 { 3307 {
2063 WL w_; 3308 WL w_;
2064 3309
2065 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3310 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2066 { 3311 {
2067 ev_stat *w = (ev_stat *)w_; 3312 ev_stat *w = (ev_stat *)w_;
2068 w_ = w_->next; /* lets us remove this watcher and all before it */ 3313 w_ = w_->next; /* lets us remove this watcher and all before it */
2069 3314
2070 if (w->wd == wd || wd == -1) 3315 if (w->wd == wd || wd == -1)
2071 { 3316 {
2072 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3317 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2073 { 3318 {
3319 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2074 w->wd = -1; 3320 w->wd = -1;
2075 infy_add (EV_A_ w); /* re-add, no matter what */ 3321 infy_add (EV_A_ w); /* re-add, no matter what */
2076 } 3322 }
2077 3323
2078 stat_timer_cb (EV_A_ &w->timer, 0); 3324 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2083 3329
2084static void 3330static void
2085infy_cb (EV_P_ ev_io *w, int revents) 3331infy_cb (EV_P_ ev_io *w, int revents)
2086{ 3332{
2087 char buf [EV_INOTIFY_BUFSIZE]; 3333 char buf [EV_INOTIFY_BUFSIZE];
2088 struct inotify_event *ev = (struct inotify_event *)buf;
2089 int ofs; 3334 int ofs;
2090 int len = read (fs_fd, buf, sizeof (buf)); 3335 int len = read (fs_fd, buf, sizeof (buf));
2091 3336
2092 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3337 for (ofs = 0; ofs < len; )
3338 {
3339 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2093 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3340 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3341 ofs += sizeof (struct inotify_event) + ev->len;
3342 }
2094} 3343}
2095 3344
2096void inline_size 3345inline_size void ecb_cold
3346ev_check_2625 (EV_P)
3347{
3348 /* kernels < 2.6.25 are borked
3349 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3350 */
3351 if (ev_linux_version () < 0x020619)
3352 return;
3353
3354 fs_2625 = 1;
3355}
3356
3357inline_size int
3358infy_newfd (void)
3359{
3360#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3361 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3362 if (fd >= 0)
3363 return fd;
3364#endif
3365 return inotify_init ();
3366}
3367
3368inline_size void
2097infy_init (EV_P) 3369infy_init (EV_P)
2098{ 3370{
2099 if (fs_fd != -2) 3371 if (fs_fd != -2)
2100 return; 3372 return;
2101 3373
3374 fs_fd = -1;
3375
3376 ev_check_2625 (EV_A);
3377
2102 fs_fd = inotify_init (); 3378 fs_fd = infy_newfd ();
2103 3379
2104 if (fs_fd >= 0) 3380 if (fs_fd >= 0)
2105 { 3381 {
3382 fd_intern (fs_fd);
2106 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3383 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2107 ev_set_priority (&fs_w, EV_MAXPRI); 3384 ev_set_priority (&fs_w, EV_MAXPRI);
2108 ev_io_start (EV_A_ &fs_w); 3385 ev_io_start (EV_A_ &fs_w);
3386 ev_unref (EV_A);
2109 } 3387 }
2110} 3388}
2111 3389
2112void inline_size 3390inline_size void
2113infy_fork (EV_P) 3391infy_fork (EV_P)
2114{ 3392{
2115 int slot; 3393 int slot;
2116 3394
2117 if (fs_fd < 0) 3395 if (fs_fd < 0)
2118 return; 3396 return;
2119 3397
3398 ev_ref (EV_A);
3399 ev_io_stop (EV_A_ &fs_w);
2120 close (fs_fd); 3400 close (fs_fd);
2121 fs_fd = inotify_init (); 3401 fs_fd = infy_newfd ();
2122 3402
3403 if (fs_fd >= 0)
3404 {
3405 fd_intern (fs_fd);
3406 ev_io_set (&fs_w, fs_fd, EV_READ);
3407 ev_io_start (EV_A_ &fs_w);
3408 ev_unref (EV_A);
3409 }
3410
2123 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3411 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2124 { 3412 {
2125 WL w_ = fs_hash [slot].head; 3413 WL w_ = fs_hash [slot].head;
2126 fs_hash [slot].head = 0; 3414 fs_hash [slot].head = 0;
2127 3415
2128 while (w_) 3416 while (w_)
… …
2133 w->wd = -1; 3421 w->wd = -1;
2134 3422
2135 if (fs_fd >= 0) 3423 if (fs_fd >= 0)
2136 infy_add (EV_A_ w); /* re-add, no matter what */ 3424 infy_add (EV_A_ w); /* re-add, no matter what */
2137 else 3425 else
3426 {
3427 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3428 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2138 ev_timer_start (EV_A_ &w->timer); 3429 ev_timer_again (EV_A_ &w->timer);
3430 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3431 }
2139 } 3432 }
2140
2141 } 3433 }
2142} 3434}
2143 3435
3436#endif
3437
3438#ifdef _WIN32
3439# define EV_LSTAT(p,b) _stati64 (p, b)
3440#else
3441# define EV_LSTAT(p,b) lstat (p, b)
2144#endif 3442#endif
2145 3443
2146void 3444void
2147ev_stat_stat (EV_P_ ev_stat *w) 3445ev_stat_stat (EV_P_ ev_stat *w)
2148{ 3446{
… …
2155static void noinline 3453static void noinline
2156stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3454stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2157{ 3455{
2158 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3456 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2159 3457
2160 /* we copy this here each the time so that */ 3458 ev_statdata prev = w->attr;
2161 /* prev has the old value when the callback gets invoked */
2162 w->prev = w->attr;
2163 ev_stat_stat (EV_A_ w); 3459 ev_stat_stat (EV_A_ w);
2164 3460
2165 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3461 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2166 if ( 3462 if (
2167 w->prev.st_dev != w->attr.st_dev 3463 prev.st_dev != w->attr.st_dev
2168 || w->prev.st_ino != w->attr.st_ino 3464 || prev.st_ino != w->attr.st_ino
2169 || w->prev.st_mode != w->attr.st_mode 3465 || prev.st_mode != w->attr.st_mode
2170 || w->prev.st_nlink != w->attr.st_nlink 3466 || prev.st_nlink != w->attr.st_nlink
2171 || w->prev.st_uid != w->attr.st_uid 3467 || prev.st_uid != w->attr.st_uid
2172 || w->prev.st_gid != w->attr.st_gid 3468 || prev.st_gid != w->attr.st_gid
2173 || w->prev.st_rdev != w->attr.st_rdev 3469 || prev.st_rdev != w->attr.st_rdev
2174 || w->prev.st_size != w->attr.st_size 3470 || prev.st_size != w->attr.st_size
2175 || w->prev.st_atime != w->attr.st_atime 3471 || prev.st_atime != w->attr.st_atime
2176 || w->prev.st_mtime != w->attr.st_mtime 3472 || prev.st_mtime != w->attr.st_mtime
2177 || w->prev.st_ctime != w->attr.st_ctime 3473 || prev.st_ctime != w->attr.st_ctime
2178 ) { 3474 ) {
3475 /* we only update w->prev on actual differences */
3476 /* in case we test more often than invoke the callback, */
3477 /* to ensure that prev is always different to attr */
3478 w->prev = prev;
3479
2179 #if EV_USE_INOTIFY 3480 #if EV_USE_INOTIFY
3481 if (fs_fd >= 0)
3482 {
2180 infy_del (EV_A_ w); 3483 infy_del (EV_A_ w);
2181 infy_add (EV_A_ w); 3484 infy_add (EV_A_ w);
2182 ev_stat_stat (EV_A_ w); /* avoid race... */ 3485 ev_stat_stat (EV_A_ w); /* avoid race... */
3486 }
2183 #endif 3487 #endif
2184 3488
2185 ev_feed_event (EV_A_ w, EV_STAT); 3489 ev_feed_event (EV_A_ w, EV_STAT);
2186 } 3490 }
2187} 3491}
… …
2190ev_stat_start (EV_P_ ev_stat *w) 3494ev_stat_start (EV_P_ ev_stat *w)
2191{ 3495{
2192 if (expect_false (ev_is_active (w))) 3496 if (expect_false (ev_is_active (w)))
2193 return; 3497 return;
2194 3498
2195 /* since we use memcmp, we need to clear any padding data etc. */
2196 memset (&w->prev, 0, sizeof (ev_statdata));
2197 memset (&w->attr, 0, sizeof (ev_statdata));
2198
2199 ev_stat_stat (EV_A_ w); 3499 ev_stat_stat (EV_A_ w);
2200 3500
3501 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2201 if (w->interval < MIN_STAT_INTERVAL) 3502 w->interval = MIN_STAT_INTERVAL;
2202 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2203 3503
2204 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3504 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2205 ev_set_priority (&w->timer, ev_priority (w)); 3505 ev_set_priority (&w->timer, ev_priority (w));
2206 3506
2207#if EV_USE_INOTIFY 3507#if EV_USE_INOTIFY
2208 infy_init (EV_A); 3508 infy_init (EV_A);
2209 3509
2210 if (fs_fd >= 0) 3510 if (fs_fd >= 0)
2211 infy_add (EV_A_ w); 3511 infy_add (EV_A_ w);
2212 else 3512 else
2213#endif 3513#endif
3514 {
2214 ev_timer_start (EV_A_ &w->timer); 3515 ev_timer_again (EV_A_ &w->timer);
3516 ev_unref (EV_A);
3517 }
2215 3518
2216 ev_start (EV_A_ (W)w, 1); 3519 ev_start (EV_A_ (W)w, 1);
3520
3521 EV_FREQUENT_CHECK;
2217} 3522}
2218 3523
2219void 3524void
2220ev_stat_stop (EV_P_ ev_stat *w) 3525ev_stat_stop (EV_P_ ev_stat *w)
2221{ 3526{
2222 clear_pending (EV_A_ (W)w); 3527 clear_pending (EV_A_ (W)w);
2223 if (expect_false (!ev_is_active (w))) 3528 if (expect_false (!ev_is_active (w)))
2224 return; 3529 return;
2225 3530
3531 EV_FREQUENT_CHECK;
3532
2226#if EV_USE_INOTIFY 3533#if EV_USE_INOTIFY
2227 infy_del (EV_A_ w); 3534 infy_del (EV_A_ w);
2228#endif 3535#endif
3536
3537 if (ev_is_active (&w->timer))
3538 {
3539 ev_ref (EV_A);
2229 ev_timer_stop (EV_A_ &w->timer); 3540 ev_timer_stop (EV_A_ &w->timer);
3541 }
2230 3542
2231 ev_stop (EV_A_ (W)w); 3543 ev_stop (EV_A_ (W)w);
3544
3545 EV_FREQUENT_CHECK;
2232} 3546}
2233#endif 3547#endif
2234 3548
2235#if EV_IDLE_ENABLE 3549#if EV_IDLE_ENABLE
2236void 3550void
… …
2239 if (expect_false (ev_is_active (w))) 3553 if (expect_false (ev_is_active (w)))
2240 return; 3554 return;
2241 3555
2242 pri_adjust (EV_A_ (W)w); 3556 pri_adjust (EV_A_ (W)w);
2243 3557
3558 EV_FREQUENT_CHECK;
3559
2244 { 3560 {
2245 int active = ++idlecnt [ABSPRI (w)]; 3561 int active = ++idlecnt [ABSPRI (w)];
2246 3562
2247 ++idleall; 3563 ++idleall;
2248 ev_start (EV_A_ (W)w, active); 3564 ev_start (EV_A_ (W)w, active);
2249 3565
2250 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3566 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2251 idles [ABSPRI (w)][active - 1] = w; 3567 idles [ABSPRI (w)][active - 1] = w;
2252 } 3568 }
3569
3570 EV_FREQUENT_CHECK;
2253} 3571}
2254 3572
2255void 3573void
2256ev_idle_stop (EV_P_ ev_idle *w) 3574ev_idle_stop (EV_P_ ev_idle *w)
2257{ 3575{
2258 clear_pending (EV_A_ (W)w); 3576 clear_pending (EV_A_ (W)w);
2259 if (expect_false (!ev_is_active (w))) 3577 if (expect_false (!ev_is_active (w)))
2260 return; 3578 return;
2261 3579
3580 EV_FREQUENT_CHECK;
3581
2262 { 3582 {
2263 int active = ((W)w)->active; 3583 int active = ev_active (w);
2264 3584
2265 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3585 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2266 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3586 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2267 3587
2268 ev_stop (EV_A_ (W)w); 3588 ev_stop (EV_A_ (W)w);
2269 --idleall; 3589 --idleall;
2270 } 3590 }
2271}
2272#endif
2273 3591
3592 EV_FREQUENT_CHECK;
3593}
3594#endif
3595
3596#if EV_PREPARE_ENABLE
2274void 3597void
2275ev_prepare_start (EV_P_ ev_prepare *w) 3598ev_prepare_start (EV_P_ ev_prepare *w)
2276{ 3599{
2277 if (expect_false (ev_is_active (w))) 3600 if (expect_false (ev_is_active (w)))
2278 return; 3601 return;
3602
3603 EV_FREQUENT_CHECK;
2279 3604
2280 ev_start (EV_A_ (W)w, ++preparecnt); 3605 ev_start (EV_A_ (W)w, ++preparecnt);
2281 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3606 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2282 prepares [preparecnt - 1] = w; 3607 prepares [preparecnt - 1] = w;
3608
3609 EV_FREQUENT_CHECK;
2283} 3610}
2284 3611
2285void 3612void
2286ev_prepare_stop (EV_P_ ev_prepare *w) 3613ev_prepare_stop (EV_P_ ev_prepare *w)
2287{ 3614{
2288 clear_pending (EV_A_ (W)w); 3615 clear_pending (EV_A_ (W)w);
2289 if (expect_false (!ev_is_active (w))) 3616 if (expect_false (!ev_is_active (w)))
2290 return; 3617 return;
2291 3618
3619 EV_FREQUENT_CHECK;
3620
2292 { 3621 {
2293 int active = ((W)w)->active; 3622 int active = ev_active (w);
3623
2294 prepares [active - 1] = prepares [--preparecnt]; 3624 prepares [active - 1] = prepares [--preparecnt];
2295 ((W)prepares [active - 1])->active = active; 3625 ev_active (prepares [active - 1]) = active;
2296 } 3626 }
2297 3627
2298 ev_stop (EV_A_ (W)w); 3628 ev_stop (EV_A_ (W)w);
2299}
2300 3629
3630 EV_FREQUENT_CHECK;
3631}
3632#endif
3633
3634#if EV_CHECK_ENABLE
2301void 3635void
2302ev_check_start (EV_P_ ev_check *w) 3636ev_check_start (EV_P_ ev_check *w)
2303{ 3637{
2304 if (expect_false (ev_is_active (w))) 3638 if (expect_false (ev_is_active (w)))
2305 return; 3639 return;
3640
3641 EV_FREQUENT_CHECK;
2306 3642
2307 ev_start (EV_A_ (W)w, ++checkcnt); 3643 ev_start (EV_A_ (W)w, ++checkcnt);
2308 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3644 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2309 checks [checkcnt - 1] = w; 3645 checks [checkcnt - 1] = w;
3646
3647 EV_FREQUENT_CHECK;
2310} 3648}
2311 3649
2312void 3650void
2313ev_check_stop (EV_P_ ev_check *w) 3651ev_check_stop (EV_P_ ev_check *w)
2314{ 3652{
2315 clear_pending (EV_A_ (W)w); 3653 clear_pending (EV_A_ (W)w);
2316 if (expect_false (!ev_is_active (w))) 3654 if (expect_false (!ev_is_active (w)))
2317 return; 3655 return;
2318 3656
3657 EV_FREQUENT_CHECK;
3658
2319 { 3659 {
2320 int active = ((W)w)->active; 3660 int active = ev_active (w);
3661
2321 checks [active - 1] = checks [--checkcnt]; 3662 checks [active - 1] = checks [--checkcnt];
2322 ((W)checks [active - 1])->active = active; 3663 ev_active (checks [active - 1]) = active;
2323 } 3664 }
2324 3665
2325 ev_stop (EV_A_ (W)w); 3666 ev_stop (EV_A_ (W)w);
3667
3668 EV_FREQUENT_CHECK;
2326} 3669}
3670#endif
2327 3671
2328#if EV_EMBED_ENABLE 3672#if EV_EMBED_ENABLE
2329void noinline 3673void noinline
2330ev_embed_sweep (EV_P_ ev_embed *w) 3674ev_embed_sweep (EV_P_ ev_embed *w)
2331{ 3675{
2332 ev_loop (w->other, EVLOOP_NONBLOCK); 3676 ev_run (w->other, EVRUN_NOWAIT);
2333} 3677}
2334 3678
2335static void 3679static void
2336embed_io_cb (EV_P_ ev_io *io, int revents) 3680embed_io_cb (EV_P_ ev_io *io, int revents)
2337{ 3681{
2338 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3682 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2339 3683
2340 if (ev_cb (w)) 3684 if (ev_cb (w))
2341 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3685 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2342 else 3686 else
2343 ev_loop (w->other, EVLOOP_NONBLOCK); 3687 ev_run (w->other, EVRUN_NOWAIT);
2344} 3688}
2345 3689
2346static void 3690static void
2347embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3691embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2348{ 3692{
2349 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3693 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2350 3694
2351 { 3695 {
2352 struct ev_loop *loop = w->other; 3696 EV_P = w->other;
2353 3697
2354 while (fdchangecnt) 3698 while (fdchangecnt)
2355 { 3699 {
2356 fd_reify (EV_A); 3700 fd_reify (EV_A);
2357 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3701 ev_run (EV_A_ EVRUN_NOWAIT);
2358 } 3702 }
2359 } 3703 }
3704}
3705
3706static void
3707embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3708{
3709 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3710
3711 ev_embed_stop (EV_A_ w);
3712
3713 {
3714 EV_P = w->other;
3715
3716 ev_loop_fork (EV_A);
3717 ev_run (EV_A_ EVRUN_NOWAIT);
3718 }
3719
3720 ev_embed_start (EV_A_ w);
2360} 3721}
2361 3722
2362#if 0 3723#if 0
2363static void 3724static void
2364embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3725embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2372{ 3733{
2373 if (expect_false (ev_is_active (w))) 3734 if (expect_false (ev_is_active (w)))
2374 return; 3735 return;
2375 3736
2376 { 3737 {
2377 struct ev_loop *loop = w->other; 3738 EV_P = w->other;
2378 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3739 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2379 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3740 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2380 } 3741 }
3742
3743 EV_FREQUENT_CHECK;
2381 3744
2382 ev_set_priority (&w->io, ev_priority (w)); 3745 ev_set_priority (&w->io, ev_priority (w));
2383 ev_io_start (EV_A_ &w->io); 3746 ev_io_start (EV_A_ &w->io);
2384 3747
2385 ev_prepare_init (&w->prepare, embed_prepare_cb); 3748 ev_prepare_init (&w->prepare, embed_prepare_cb);
2386 ev_set_priority (&w->prepare, EV_MINPRI); 3749 ev_set_priority (&w->prepare, EV_MINPRI);
2387 ev_prepare_start (EV_A_ &w->prepare); 3750 ev_prepare_start (EV_A_ &w->prepare);
2388 3751
3752 ev_fork_init (&w->fork, embed_fork_cb);
3753 ev_fork_start (EV_A_ &w->fork);
3754
2389 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3755 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2390 3756
2391 ev_start (EV_A_ (W)w, 1); 3757 ev_start (EV_A_ (W)w, 1);
3758
3759 EV_FREQUENT_CHECK;
2392} 3760}
2393 3761
2394void 3762void
2395ev_embed_stop (EV_P_ ev_embed *w) 3763ev_embed_stop (EV_P_ ev_embed *w)
2396{ 3764{
2397 clear_pending (EV_A_ (W)w); 3765 clear_pending (EV_A_ (W)w);
2398 if (expect_false (!ev_is_active (w))) 3766 if (expect_false (!ev_is_active (w)))
2399 return; 3767 return;
2400 3768
3769 EV_FREQUENT_CHECK;
3770
2401 ev_io_stop (EV_A_ &w->io); 3771 ev_io_stop (EV_A_ &w->io);
2402 ev_prepare_stop (EV_A_ &w->prepare); 3772 ev_prepare_stop (EV_A_ &w->prepare);
3773 ev_fork_stop (EV_A_ &w->fork);
2403 3774
2404 ev_stop (EV_A_ (W)w); 3775 ev_stop (EV_A_ (W)w);
3776
3777 EV_FREQUENT_CHECK;
2405} 3778}
2406#endif 3779#endif
2407 3780
2408#if EV_FORK_ENABLE 3781#if EV_FORK_ENABLE
2409void 3782void
2410ev_fork_start (EV_P_ ev_fork *w) 3783ev_fork_start (EV_P_ ev_fork *w)
2411{ 3784{
2412 if (expect_false (ev_is_active (w))) 3785 if (expect_false (ev_is_active (w)))
2413 return; 3786 return;
2414 3787
3788 EV_FREQUENT_CHECK;
3789
2415 ev_start (EV_A_ (W)w, ++forkcnt); 3790 ev_start (EV_A_ (W)w, ++forkcnt);
2416 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3791 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2417 forks [forkcnt - 1] = w; 3792 forks [forkcnt - 1] = w;
3793
3794 EV_FREQUENT_CHECK;
2418} 3795}
2419 3796
2420void 3797void
2421ev_fork_stop (EV_P_ ev_fork *w) 3798ev_fork_stop (EV_P_ ev_fork *w)
2422{ 3799{
2423 clear_pending (EV_A_ (W)w); 3800 clear_pending (EV_A_ (W)w);
2424 if (expect_false (!ev_is_active (w))) 3801 if (expect_false (!ev_is_active (w)))
2425 return; 3802 return;
2426 3803
3804 EV_FREQUENT_CHECK;
3805
2427 { 3806 {
2428 int active = ((W)w)->active; 3807 int active = ev_active (w);
3808
2429 forks [active - 1] = forks [--forkcnt]; 3809 forks [active - 1] = forks [--forkcnt];
2430 ((W)forks [active - 1])->active = active; 3810 ev_active (forks [active - 1]) = active;
2431 } 3811 }
2432 3812
2433 ev_stop (EV_A_ (W)w); 3813 ev_stop (EV_A_ (W)w);
3814
3815 EV_FREQUENT_CHECK;
3816}
3817#endif
3818
3819#if EV_CLEANUP_ENABLE
3820void
3821ev_cleanup_start (EV_P_ ev_cleanup *w)
3822{
3823 if (expect_false (ev_is_active (w)))
3824 return;
3825
3826 EV_FREQUENT_CHECK;
3827
3828 ev_start (EV_A_ (W)w, ++cleanupcnt);
3829 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3830 cleanups [cleanupcnt - 1] = w;
3831
3832 /* cleanup watchers should never keep a refcount on the loop */
3833 ev_unref (EV_A);
3834 EV_FREQUENT_CHECK;
3835}
3836
3837void
3838ev_cleanup_stop (EV_P_ ev_cleanup *w)
3839{
3840 clear_pending (EV_A_ (W)w);
3841 if (expect_false (!ev_is_active (w)))
3842 return;
3843
3844 EV_FREQUENT_CHECK;
3845 ev_ref (EV_A);
3846
3847 {
3848 int active = ev_active (w);
3849
3850 cleanups [active - 1] = cleanups [--cleanupcnt];
3851 ev_active (cleanups [active - 1]) = active;
3852 }
3853
3854 ev_stop (EV_A_ (W)w);
3855
3856 EV_FREQUENT_CHECK;
2434} 3857}
2435#endif 3858#endif
2436 3859
2437#if EV_ASYNC_ENABLE 3860#if EV_ASYNC_ENABLE
2438void 3861void
2439ev_async_start (EV_P_ ev_async *w) 3862ev_async_start (EV_P_ ev_async *w)
2440{ 3863{
2441 if (expect_false (ev_is_active (w))) 3864 if (expect_false (ev_is_active (w)))
2442 return; 3865 return;
2443 3866
3867 w->sent = 0;
3868
2444 evpipe_init (EV_A); 3869 evpipe_init (EV_A);
3870
3871 EV_FREQUENT_CHECK;
2445 3872
2446 ev_start (EV_A_ (W)w, ++asynccnt); 3873 ev_start (EV_A_ (W)w, ++asynccnt);
2447 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3874 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2448 asyncs [asynccnt - 1] = w; 3875 asyncs [asynccnt - 1] = w;
3876
3877 EV_FREQUENT_CHECK;
2449} 3878}
2450 3879
2451void 3880void
2452ev_async_stop (EV_P_ ev_async *w) 3881ev_async_stop (EV_P_ ev_async *w)
2453{ 3882{
2454 clear_pending (EV_A_ (W)w); 3883 clear_pending (EV_A_ (W)w);
2455 if (expect_false (!ev_is_active (w))) 3884 if (expect_false (!ev_is_active (w)))
2456 return; 3885 return;
2457 3886
3887 EV_FREQUENT_CHECK;
3888
2458 { 3889 {
2459 int active = ((W)w)->active; 3890 int active = ev_active (w);
3891
2460 asyncs [active - 1] = asyncs [--asynccnt]; 3892 asyncs [active - 1] = asyncs [--asynccnt];
2461 ((W)asyncs [active - 1])->active = active; 3893 ev_active (asyncs [active - 1]) = active;
2462 } 3894 }
2463 3895
2464 ev_stop (EV_A_ (W)w); 3896 ev_stop (EV_A_ (W)w);
3897
3898 EV_FREQUENT_CHECK;
2465} 3899}
2466 3900
2467void 3901void
2468ev_async_send (EV_P_ ev_async *w) 3902ev_async_send (EV_P_ ev_async *w)
2469{ 3903{
2470 w->sent = 1; 3904 w->sent = 1;
2471 evpipe_write (EV_A_ &gotasync); 3905 evpipe_write (EV_A_ &async_pending);
2472} 3906}
2473#endif 3907#endif
2474 3908
2475/*****************************************************************************/ 3909/*****************************************************************************/
2476 3910
… …
2486once_cb (EV_P_ struct ev_once *once, int revents) 3920once_cb (EV_P_ struct ev_once *once, int revents)
2487{ 3921{
2488 void (*cb)(int revents, void *arg) = once->cb; 3922 void (*cb)(int revents, void *arg) = once->cb;
2489 void *arg = once->arg; 3923 void *arg = once->arg;
2490 3924
2491 ev_io_stop (EV_A_ &once->io); 3925 ev_io_stop (EV_A_ &once->io);
2492 ev_timer_stop (EV_A_ &once->to); 3926 ev_timer_stop (EV_A_ &once->to);
2493 ev_free (once); 3927 ev_free (once);
2494 3928
2495 cb (revents, arg); 3929 cb (revents, arg);
2496} 3930}
2497 3931
2498static void 3932static void
2499once_cb_io (EV_P_ ev_io *w, int revents) 3933once_cb_io (EV_P_ ev_io *w, int revents)
2500{ 3934{
2501 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3935 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3936
3937 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2502} 3938}
2503 3939
2504static void 3940static void
2505once_cb_to (EV_P_ ev_timer *w, int revents) 3941once_cb_to (EV_P_ ev_timer *w, int revents)
2506{ 3942{
2507 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3943 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3944
3945 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2508} 3946}
2509 3947
2510void 3948void
2511ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3949ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2512{ 3950{
2513 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3951 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2514 3952
2515 if (expect_false (!once)) 3953 if (expect_false (!once))
2516 { 3954 {
2517 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3955 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2518 return; 3956 return;
2519 } 3957 }
2520 3958
2521 once->cb = cb; 3959 once->cb = cb;
2522 once->arg = arg; 3960 once->arg = arg;
… …
2534 ev_timer_set (&once->to, timeout, 0.); 3972 ev_timer_set (&once->to, timeout, 0.);
2535 ev_timer_start (EV_A_ &once->to); 3973 ev_timer_start (EV_A_ &once->to);
2536 } 3974 }
2537} 3975}
2538 3976
3977/*****************************************************************************/
3978
3979#if EV_WALK_ENABLE
3980void ecb_cold
3981ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3982{
3983 int i, j;
3984 ev_watcher_list *wl, *wn;
3985
3986 if (types & (EV_IO | EV_EMBED))
3987 for (i = 0; i < anfdmax; ++i)
3988 for (wl = anfds [i].head; wl; )
3989 {
3990 wn = wl->next;
3991
3992#if EV_EMBED_ENABLE
3993 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3994 {
3995 if (types & EV_EMBED)
3996 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3997 }
3998 else
3999#endif
4000#if EV_USE_INOTIFY
4001 if (ev_cb ((ev_io *)wl) == infy_cb)
4002 ;
4003 else
4004#endif
4005 if ((ev_io *)wl != &pipe_w)
4006 if (types & EV_IO)
4007 cb (EV_A_ EV_IO, wl);
4008
4009 wl = wn;
4010 }
4011
4012 if (types & (EV_TIMER | EV_STAT))
4013 for (i = timercnt + HEAP0; i-- > HEAP0; )
4014#if EV_STAT_ENABLE
4015 /*TODO: timer is not always active*/
4016 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4017 {
4018 if (types & EV_STAT)
4019 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4020 }
4021 else
4022#endif
4023 if (types & EV_TIMER)
4024 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4025
4026#if EV_PERIODIC_ENABLE
4027 if (types & EV_PERIODIC)
4028 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4029 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4030#endif
4031
4032#if EV_IDLE_ENABLE
4033 if (types & EV_IDLE)
4034 for (j = NUMPRI; i--; )
4035 for (i = idlecnt [j]; i--; )
4036 cb (EV_A_ EV_IDLE, idles [j][i]);
4037#endif
4038
4039#if EV_FORK_ENABLE
4040 if (types & EV_FORK)
4041 for (i = forkcnt; i--; )
4042 if (ev_cb (forks [i]) != embed_fork_cb)
4043 cb (EV_A_ EV_FORK, forks [i]);
4044#endif
4045
4046#if EV_ASYNC_ENABLE
4047 if (types & EV_ASYNC)
4048 for (i = asynccnt; i--; )
4049 cb (EV_A_ EV_ASYNC, asyncs [i]);
4050#endif
4051
4052#if EV_PREPARE_ENABLE
4053 if (types & EV_PREPARE)
4054 for (i = preparecnt; i--; )
4055# if EV_EMBED_ENABLE
4056 if (ev_cb (prepares [i]) != embed_prepare_cb)
4057# endif
4058 cb (EV_A_ EV_PREPARE, prepares [i]);
4059#endif
4060
4061#if EV_CHECK_ENABLE
4062 if (types & EV_CHECK)
4063 for (i = checkcnt; i--; )
4064 cb (EV_A_ EV_CHECK, checks [i]);
4065#endif
4066
4067#if EV_SIGNAL_ENABLE
4068 if (types & EV_SIGNAL)
4069 for (i = 0; i < EV_NSIG - 1; ++i)
4070 for (wl = signals [i].head; wl; )
4071 {
4072 wn = wl->next;
4073 cb (EV_A_ EV_SIGNAL, wl);
4074 wl = wn;
4075 }
4076#endif
4077
4078#if EV_CHILD_ENABLE
4079 if (types & EV_CHILD)
4080 for (i = (EV_PID_HASHSIZE); i--; )
4081 for (wl = childs [i]; wl; )
4082 {
4083 wn = wl->next;
4084 cb (EV_A_ EV_CHILD, wl);
4085 wl = wn;
4086 }
4087#endif
4088/* EV_STAT 0x00001000 /* stat data changed */
4089/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4090}
4091#endif
4092
2539#if EV_MULTIPLICITY 4093#if EV_MULTIPLICITY
2540 #include "ev_wrap.h" 4094 #include "ev_wrap.h"
2541#endif 4095#endif
2542 4096
2543#ifdef __cplusplus 4097EV_CPP(})
2544}
2545#endif
2546 4098

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