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Comparing libev/ev.c (file contents):
Revision 1.295 by root, Wed Jul 8 04:29:31 2009 UTC vs.
Revision 1.400 by root, Sat Oct 15 09:05:03 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 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
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# 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
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
… …
174# define WIN32_LEAN_AND_MEAN 194# define WIN32_LEAN_AND_MEAN
175# include <windows.h> 195# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 196# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 197# define EV_SELECT_IS_WINSOCKET 1
178# endif 198# endif
199# undef EV_AVOID_STDIO
179#endif 200#endif
201
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
180 209
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 210/* this block tries to deduce configuration from header-defined symbols and defaults */
211
212/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG)
214/* use what's provided */
215#elif defined (NSIG)
216# define EV_NSIG (NSIG)
217#elif defined(_NSIG)
218# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX)
220# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX)
222# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX)
224# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG)
226# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG)
228# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE)
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig)
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else
234# error "unable to find value for NSIG, please report"
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif
239
240#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0
242#endif
182 243
183#ifndef EV_USE_CLOCK_SYSCALL 244#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 245# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 247# else
187# define EV_USE_CLOCK_SYSCALL 0 248# define EV_USE_CLOCK_SYSCALL 0
188# endif 249# endif
189#endif 250#endif
190 251
191#ifndef EV_USE_MONOTONIC 252#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 254# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 255# else
195# define EV_USE_MONOTONIC 0 256# define EV_USE_MONOTONIC 0
196# endif 257# endif
197#endif 258#endif
198 259
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 261# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 262#endif
202 263
203#ifndef EV_USE_NANOSLEEP 264#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 265# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 266# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 267# else
207# define EV_USE_NANOSLEEP 0 268# define EV_USE_NANOSLEEP 0
208# endif 269# endif
209#endif 270#endif
210 271
211#ifndef EV_USE_SELECT 272#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 273# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 274#endif
214 275
215#ifndef EV_USE_POLL 276#ifndef EV_USE_POLL
216# ifdef _WIN32 277# ifdef _WIN32
217# define EV_USE_POLL 0 278# define EV_USE_POLL 0
218# else 279# else
219# define EV_USE_POLL 1 280# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 281# endif
221#endif 282#endif
222 283
223#ifndef EV_USE_EPOLL 284#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 285# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 286# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 287# else
227# define EV_USE_EPOLL 0 288# define EV_USE_EPOLL 0
228# endif 289# endif
229#endif 290#endif
230 291
… …
236# define EV_USE_PORT 0 297# define EV_USE_PORT 0
237#endif 298#endif
238 299
239#ifndef EV_USE_INOTIFY 300#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 302# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 303# else
243# define EV_USE_INOTIFY 0 304# define EV_USE_INOTIFY 0
244# endif 305# endif
245#endif 306#endif
246 307
247#ifndef EV_PID_HASHSIZE 308#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 309# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 310#endif
254 311
255#ifndef EV_INOTIFY_HASHSIZE 312#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 313# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 314#endif
262 315
263#ifndef EV_USE_EVENTFD 316#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 317# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 318# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 319# else
267# define EV_USE_EVENTFD 0 320# define EV_USE_EVENTFD 0
321# endif
322#endif
323
324#ifndef EV_USE_SIGNALFD
325# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
326# define EV_USE_SIGNALFD EV_FEATURE_OS
327# else
328# define EV_USE_SIGNALFD 0
268# endif 329# endif
269#endif 330#endif
270 331
271#if 0 /* debugging */ 332#if 0 /* debugging */
272# define EV_VERIFY 3 333# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 334# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 335# define EV_HEAP_CACHE_AT 1
275#endif 336#endif
276 337
277#ifndef EV_VERIFY 338#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 339# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 340#endif
280 341
281#ifndef EV_USE_4HEAP 342#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 343# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 344#endif
284 345
285#ifndef EV_HEAP_CACHE_AT 346#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 348#endif
288 349
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 350/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 351/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 352#if EV_USE_CLOCK_SYSCALL
… …
300# endif 361# endif
301#endif 362#endif
302 363
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 364/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304 365
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
371
305#ifndef CLOCK_MONOTONIC 372#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 373# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 374# define EV_USE_MONOTONIC 0
308#endif 375#endif
309 376
… …
316# undef EV_USE_INOTIFY 383# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 384# define EV_USE_INOTIFY 0
318#endif 385#endif
319 386
320#if !EV_USE_NANOSLEEP 387#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 388/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux)
322# include <sys/select.h> 390# include <sys/select.h>
323# endif 391# endif
324#endif 392#endif
325 393
326#if EV_USE_INOTIFY 394#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 395# include <sys/statfs.h>
329# include <sys/inotify.h> 396# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 397/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 398# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 399# undef EV_USE_INOTIFY
… …
339#endif 406#endif
340 407
341#if EV_USE_EVENTFD 408#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 410# include <stdint.h>
344# ifdef __cplusplus 411# ifndef EFD_NONBLOCK
345extern "C" { 412# define EFD_NONBLOCK O_NONBLOCK
346# endif 413# endif
347int eventfd (unsigned int initval, int flags); 414# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 415# ifdef O_CLOEXEC
349} 416# define EFD_CLOEXEC O_CLOEXEC
417# else
418# define EFD_CLOEXEC 02000000
419# endif
350# endif 420# endif
421EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
422#endif
423
424#if EV_USE_SIGNALFD
425/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
426# include <stdint.h>
427# ifndef SFD_NONBLOCK
428# define SFD_NONBLOCK O_NONBLOCK
429# endif
430# ifndef SFD_CLOEXEC
431# ifdef O_CLOEXEC
432# define SFD_CLOEXEC O_CLOEXEC
433# else
434# define SFD_CLOEXEC 02000000
435# endif
436# endif
437EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
438
439struct signalfd_siginfo
440{
441 uint32_t ssi_signo;
442 char pad[128 - sizeof (uint32_t)];
443};
351#endif 444#endif
352 445
353/**/ 446/**/
354 447
355#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 450#else
358# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
359#endif 452#endif
360 453
361/* 454/*
362 * This is used to avoid floating point rounding problems. 455 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 456 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 457 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 458#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
459/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 460
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 461#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 462#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 463
464#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
465#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
466
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */
469/*
470 * libecb - http://software.schmorp.de/pkg/libecb
471 *
472 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved.
475 *
476 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met:
478 *
479 * 1. Redistributions of source code must retain the above copyright notice,
480 * this list of conditions and the following disclaimer.
481 *
482 * 2. Redistributions in binary form must reproduce the above copyright
483 * notice, this list of conditions and the following disclaimer in the
484 * documentation and/or other materials provided with the distribution.
485 *
486 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
487 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
488 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
489 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
490 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE.
496 */
497
498#ifndef ECB_H
499#define ECB_H
500
501#ifdef _WIN32
502 typedef signed char int8_t;
503 typedef unsigned char uint8_t;
504 typedef signed short int16_t;
505 typedef unsigned short uint16_t;
506 typedef signed int int32_t;
507 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 508 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 509 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 510 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t;
514 #endif
378#else 515#else
379# define expect(expr,value) (expr) 516 #include <inttypes.h>
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif 517#endif
518
519/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place.
525 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
528 #define ECB_GCC_VERSION(major,minor) 0
529 #else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
384#endif 531 #endif
532#endif
385 533
534/*****************************************************************************/
535
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538
539#if ECB_NO_THREADS || ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0)
541#endif
542
543#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__)
545 #if __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
549 #elif __amd64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #endif
562 #endif
563#endif
564
565#ifndef ECB_MEMORY_FENCE
566 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
567 #define ECB_MEMORY_FENCE __sync_synchronize ()
568 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
569 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
570 #elif _MSC_VER >= 1400 /* VC++ 2005 */
571 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
572 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
573 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
574 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
575 #elif defined(_WIN32)
576 #include <WinNT.h>
577 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
578 #endif
579#endif
580
581#ifndef ECB_MEMORY_FENCE
582 #if !ECB_AVOID_PTHREADS
583 /*
584 * if you get undefined symbol references to pthread_mutex_lock,
585 * or failure to find pthread.h, then you should implement
586 * the ECB_MEMORY_FENCE operations for your cpu/compiler
587 * OR provide pthread.h and link against the posix thread library
588 * of your system.
589 */
590 #include <pthread.h>
591 #define ECB_NEEDS_PTHREADS 1
592 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
593
594 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
595 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
596 #endif
597#endif
598
599#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
600 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
601#endif
602
603#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
604 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
605#endif
606
607/*****************************************************************************/
608
609#define ECB_C99 (__STDC_VERSION__ >= 199901L)
610
611#if __cplusplus
612 #define ecb_inline static inline
613#elif ECB_GCC_VERSION(2,5)
614 #define ecb_inline static __inline__
615#elif ECB_C99
616 #define ecb_inline static inline
617#else
618 #define ecb_inline static
619#endif
620
621#if ECB_GCC_VERSION(3,3)
622 #define ecb_restrict __restrict__
623#elif ECB_C99
624 #define ecb_restrict restrict
625#else
626 #define ecb_restrict
627#endif
628
629typedef int ecb_bool;
630
631#define ECB_CONCAT_(a, b) a ## b
632#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
633#define ECB_STRINGIFY_(a) # a
634#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
635
636#define ecb_function_ ecb_inline
637
638#if ECB_GCC_VERSION(3,1)
639 #define ecb_attribute(attrlist) __attribute__(attrlist)
640 #define ecb_is_constant(expr) __builtin_constant_p (expr)
641 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
642 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
643#else
644 #define ecb_attribute(attrlist)
645 #define ecb_is_constant(expr) 0
646 #define ecb_expect(expr,value) (expr)
647 #define ecb_prefetch(addr,rw,locality)
648#endif
649
650/* no emulation for ecb_decltype */
651#if ECB_GCC_VERSION(4,5)
652 #define ecb_decltype(x) __decltype(x)
653#elif ECB_GCC_VERSION(3,0)
654 #define ecb_decltype(x) __typeof(x)
655#endif
656
657#define ecb_noinline ecb_attribute ((__noinline__))
658#define ecb_noreturn ecb_attribute ((__noreturn__))
659#define ecb_unused ecb_attribute ((__unused__))
660#define ecb_const ecb_attribute ((__const__))
661#define ecb_pure ecb_attribute ((__pure__))
662
663#if ECB_GCC_VERSION(4,3)
664 #define ecb_artificial ecb_attribute ((__artificial__))
665 #define ecb_hot ecb_attribute ((__hot__))
666 #define ecb_cold ecb_attribute ((__cold__))
667#else
668 #define ecb_artificial
669 #define ecb_hot
670 #define ecb_cold
671#endif
672
673/* put around conditional expressions if you are very sure that the */
674/* expression is mostly true or mostly false. note that these return */
675/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 676#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 677#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
678/* for compatibility to the rest of the world */
679#define ecb_likely(expr) ecb_expect_true (expr)
680#define ecb_unlikely(expr) ecb_expect_false (expr)
681
682/* count trailing zero bits and count # of one bits */
683#if ECB_GCC_VERSION(3,4)
684 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
685 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
686 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
687 #define ecb_ctz32(x) __builtin_ctz (x)
688 #define ecb_ctz64(x) __builtin_ctzll (x)
689 #define ecb_popcount32(x) __builtin_popcount (x)
690 /* no popcountll */
691#else
692 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
693 ecb_function_ int
694 ecb_ctz32 (uint32_t x)
695 {
696 int r = 0;
697
698 x &= ~x + 1; /* this isolates the lowest bit */
699
700#if ECB_branchless_on_i386
701 r += !!(x & 0xaaaaaaaa) << 0;
702 r += !!(x & 0xcccccccc) << 1;
703 r += !!(x & 0xf0f0f0f0) << 2;
704 r += !!(x & 0xff00ff00) << 3;
705 r += !!(x & 0xffff0000) << 4;
706#else
707 if (x & 0xaaaaaaaa) r += 1;
708 if (x & 0xcccccccc) r += 2;
709 if (x & 0xf0f0f0f0) r += 4;
710 if (x & 0xff00ff00) r += 8;
711 if (x & 0xffff0000) r += 16;
712#endif
713
714 return r;
715 }
716
717 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
718 ecb_function_ int
719 ecb_ctz64 (uint64_t x)
720 {
721 int shift = x & 0xffffffffU ? 0 : 32;
722 return ecb_ctz32 (x >> shift) + shift;
723 }
724
725 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
726 ecb_function_ int
727 ecb_popcount32 (uint32_t x)
728 {
729 x -= (x >> 1) & 0x55555555;
730 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
731 x = ((x >> 4) + x) & 0x0f0f0f0f;
732 x *= 0x01010101;
733
734 return x >> 24;
735 }
736
737 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
738 ecb_function_ int ecb_ld32 (uint32_t x)
739 {
740 int r = 0;
741
742 if (x >> 16) { x >>= 16; r += 16; }
743 if (x >> 8) { x >>= 8; r += 8; }
744 if (x >> 4) { x >>= 4; r += 4; }
745 if (x >> 2) { x >>= 2; r += 2; }
746 if (x >> 1) { r += 1; }
747
748 return r;
749 }
750
751 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
752 ecb_function_ int ecb_ld64 (uint64_t x)
753 {
754 int r = 0;
755
756 if (x >> 32) { x >>= 32; r += 32; }
757
758 return r + ecb_ld32 (x);
759 }
760#endif
761
762/* popcount64 is only available on 64 bit cpus as gcc builtin */
763/* so for this version we are lazy */
764ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
765ecb_function_ int
766ecb_popcount64 (uint64_t x)
767{
768 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
769}
770
771ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
772ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
773ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
774ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
775ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
776ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
777ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
778ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
779
780ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
781ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
782ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
783ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
784ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
785ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
786ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
787ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
788
789#if ECB_GCC_VERSION(4,3)
790 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
791 #define ecb_bswap32(x) __builtin_bswap32 (x)
792 #define ecb_bswap64(x) __builtin_bswap64 (x)
793#else
794 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
795 ecb_function_ uint16_t
796 ecb_bswap16 (uint16_t x)
797 {
798 return ecb_rotl16 (x, 8);
799 }
800
801 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
802 ecb_function_ uint32_t
803 ecb_bswap32 (uint32_t x)
804 {
805 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
806 }
807
808 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
809 ecb_function_ uint64_t
810 ecb_bswap64 (uint64_t x)
811 {
812 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
813 }
814#endif
815
816#if ECB_GCC_VERSION(4,5)
817 #define ecb_unreachable() __builtin_unreachable ()
818#else
819 /* this seems to work fine, but gcc always emits a warning for it :/ */
820 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
821 ecb_function_ void ecb_unreachable (void) { }
822#endif
823
824/* try to tell the compiler that some condition is definitely true */
825#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
826
827ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
828ecb_function_ unsigned char
829ecb_byteorder_helper (void)
830{
831 const uint32_t u = 0x11223344;
832 return *(unsigned char *)&u;
833}
834
835ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
836ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
837ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
839
840#if ECB_GCC_VERSION(3,0) || ECB_C99
841 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
842#else
843 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
844#endif
845
846#if __cplusplus
847 template<typename T>
848 static inline T ecb_div_rd (T val, T div)
849 {
850 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
851 }
852 template<typename T>
853 static inline T ecb_div_ru (T val, T div)
854 {
855 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
856 }
857#else
858 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
859 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
860#endif
861
862#if ecb_cplusplus_does_not_suck
863 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
864 template<typename T, int N>
865 static inline int ecb_array_length (const T (&arr)[N])
866 {
867 return N;
868 }
869#else
870 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
871#endif
872
873#endif
874
875/* ECB.H END */
876
877#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
878/* if your architecture doesn't need memory fences, e.g. because it is
879 * single-cpu/core, or if you use libev in a project that doesn't use libev
880 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
881 * libev, in which casess the memory fences become nops.
882 * alternatively, you can remove this #error and link against libpthread,
883 * which will then provide the memory fences.
884 */
885# error "memory fences not defined for your architecture, please report"
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889# define ECB_MEMORY_FENCE do { } while (0)
890# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
891# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
892#endif
893
894#define expect_false(cond) ecb_expect_false (cond)
895#define expect_true(cond) ecb_expect_true (cond)
896#define noinline ecb_noinline
897
388#define inline_size static inline 898#define inline_size ecb_inline
389 899
390#if EV_MINIMAL 900#if EV_FEATURE_CODE
901# define inline_speed ecb_inline
902#else
391# define inline_speed static noinline 903# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 904#endif
395 905
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 906#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 907
398#if EV_MINPRI == EV_MAXPRI 908#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 921#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 922#define ev_at(w) ((WT)(w))->at
413 923
414#if EV_USE_REALTIME 924#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 925/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 926/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 927static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 928#endif
419 929
420#if EV_USE_MONOTONIC 930#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 931static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 932#endif
423 933
934#ifndef EV_FD_TO_WIN32_HANDLE
935# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
936#endif
937#ifndef EV_WIN32_HANDLE_TO_FD
938# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
939#endif
940#ifndef EV_WIN32_CLOSE_FD
941# define EV_WIN32_CLOSE_FD(fd) close (fd)
942#endif
943
424#ifdef _WIN32 944#ifdef _WIN32
425# include "ev_win32.c" 945# include "ev_win32.c"
426#endif 946#endif
427 947
428/*****************************************************************************/ 948/*****************************************************************************/
429 949
950/* define a suitable floor function (only used by periodics atm) */
951
952#if EV_USE_FLOOR
953# include <math.h>
954# define ev_floor(v) floor (v)
955#else
956
957#include <float.h>
958
959/* a floor() replacement function, should be independent of ev_tstamp type */
960static ev_tstamp noinline
961ev_floor (ev_tstamp v)
962{
963 /* the choice of shift factor is not terribly important */
964#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
965 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
966#else
967 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
968#endif
969
970 /* argument too large for an unsigned long? */
971 if (expect_false (v >= shift))
972 {
973 ev_tstamp f;
974
975 if (v == v - 1.)
976 return v; /* very large number */
977
978 f = shift * ev_floor (v * (1. / shift));
979 return f + ev_floor (v - f);
980 }
981
982 /* special treatment for negative args? */
983 if (expect_false (v < 0.))
984 {
985 ev_tstamp f = -ev_floor (-v);
986
987 return f - (f == v ? 0 : 1);
988 }
989
990 /* fits into an unsigned long */
991 return (unsigned long)v;
992}
993
994#endif
995
996/*****************************************************************************/
997
998#ifdef __linux
999# include <sys/utsname.h>
1000#endif
1001
1002static unsigned int noinline ecb_cold
1003ev_linux_version (void)
1004{
1005#ifdef __linux
1006 unsigned int v = 0;
1007 struct utsname buf;
1008 int i;
1009 char *p = buf.release;
1010
1011 if (uname (&buf))
1012 return 0;
1013
1014 for (i = 3+1; --i; )
1015 {
1016 unsigned int c = 0;
1017
1018 for (;;)
1019 {
1020 if (*p >= '0' && *p <= '9')
1021 c = c * 10 + *p++ - '0';
1022 else
1023 {
1024 p += *p == '.';
1025 break;
1026 }
1027 }
1028
1029 v = (v << 8) | c;
1030 }
1031
1032 return v;
1033#else
1034 return 0;
1035#endif
1036}
1037
1038/*****************************************************************************/
1039
1040#if EV_AVOID_STDIO
1041static void noinline ecb_cold
1042ev_printerr (const char *msg)
1043{
1044 write (STDERR_FILENO, msg, strlen (msg));
1045}
1046#endif
1047
430static void (*syserr_cb)(const char *msg); 1048static void (*syserr_cb)(const char *msg);
431 1049
432void 1050void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1051ev_set_syserr_cb (void (*cb)(const char *msg))
434{ 1052{
435 syserr_cb = cb; 1053 syserr_cb = cb;
436} 1054}
437 1055
438static void noinline 1056static void noinline ecb_cold
439ev_syserr (const char *msg) 1057ev_syserr (const char *msg)
440{ 1058{
441 if (!msg) 1059 if (!msg)
442 msg = "(libev) system error"; 1060 msg = "(libev) system error";
443 1061
444 if (syserr_cb) 1062 if (syserr_cb)
445 syserr_cb (msg); 1063 syserr_cb (msg);
446 else 1064 else
447 { 1065 {
1066#if EV_AVOID_STDIO
1067 ev_printerr (msg);
1068 ev_printerr (": ");
1069 ev_printerr (strerror (errno));
1070 ev_printerr ("\n");
1071#else
448 perror (msg); 1072 perror (msg);
1073#endif
449 abort (); 1074 abort ();
450 } 1075 }
451} 1076}
452 1077
453static void * 1078static void *
454ev_realloc_emul (void *ptr, long size) 1079ev_realloc_emul (void *ptr, long size)
455{ 1080{
1081#if __GLIBC__
1082 return realloc (ptr, size);
1083#else
456 /* some systems, notably openbsd and darwin, fail to properly 1084 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1085 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1086 * the single unix specification, so work around them here.
459 */ 1087 */
460 1088
461 if (size) 1089 if (size)
462 return realloc (ptr, size); 1090 return realloc (ptr, size);
463 1091
464 free (ptr); 1092 free (ptr);
465 return 0; 1093 return 0;
1094#endif
466} 1095}
467 1096
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1097static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
469 1098
470void 1099void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1100ev_set_allocator (void *(*cb)(void *ptr, long size))
472{ 1101{
473 alloc = cb; 1102 alloc = cb;
474} 1103}
475 1104
… …
478{ 1107{
479 ptr = alloc (ptr, size); 1108 ptr = alloc (ptr, size);
480 1109
481 if (!ptr && size) 1110 if (!ptr && size)
482 { 1111 {
1112#if EV_AVOID_STDIO
1113 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1114#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1115 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1116#endif
484 abort (); 1117 abort ();
485 } 1118 }
486 1119
487 return ptr; 1120 return ptr;
488} 1121}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 1123#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 1124#define ev_free(ptr) ev_realloc ((ptr), 0)
492 1125
493/*****************************************************************************/ 1126/*****************************************************************************/
494 1127
1128/* set in reify when reification needed */
1129#define EV_ANFD_REIFY 1
1130
495/* file descriptor info structure */ 1131/* file descriptor info structure */
496typedef struct 1132typedef struct
497{ 1133{
498 WL head; 1134 WL head;
499 unsigned char events; /* the events watched for */ 1135 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 1136 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1137 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502 unsigned char unused; 1138 unsigned char unused;
503#if EV_USE_EPOLL 1139#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 1140 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 1141#endif
506#if EV_SELECT_IS_WINSOCKET 1142#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 1143 SOCKET handle;
1144#endif
1145#if EV_USE_IOCP
1146 OVERLAPPED or, ow;
508#endif 1147#endif
509} ANFD; 1148} ANFD;
510 1149
511/* stores the pending event set for a given watcher */ 1150/* stores the pending event set for a given watcher */
512typedef struct 1151typedef struct
… …
567 1206
568 static int ev_default_loop_ptr; 1207 static int ev_default_loop_ptr;
569 1208
570#endif 1209#endif
571 1210
1211#if EV_FEATURE_API
1212# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1213# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1214# define EV_INVOKE_PENDING invoke_cb (EV_A)
1215#else
1216# define EV_RELEASE_CB (void)0
1217# define EV_ACQUIRE_CB (void)0
1218# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1219#endif
1220
1221#define EVBREAK_RECURSE 0x80
1222
572/*****************************************************************************/ 1223/*****************************************************************************/
573 1224
574#ifndef EV_HAVE_EV_TIME 1225#ifndef EV_HAVE_EV_TIME
575ev_tstamp 1226ev_tstamp
576ev_time (void) 1227ev_time (void)
… …
619 if (delay > 0.) 1270 if (delay > 0.)
620 { 1271 {
621#if EV_USE_NANOSLEEP 1272#if EV_USE_NANOSLEEP
622 struct timespec ts; 1273 struct timespec ts;
623 1274
624 ts.tv_sec = (time_t)delay; 1275 EV_TS_SET (ts, delay);
625 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
626
627 nanosleep (&ts, 0); 1276 nanosleep (&ts, 0);
628#elif defined(_WIN32) 1277#elif defined(_WIN32)
629 Sleep ((unsigned long)(delay * 1e3)); 1278 Sleep ((unsigned long)(delay * 1e3));
630#else 1279#else
631 struct timeval tv; 1280 struct timeval tv;
632 1281
633 tv.tv_sec = (time_t)delay;
634 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
635
636 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1282 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
637 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1283 /* something not guaranteed by newer posix versions, but guaranteed */
638 /* by older ones */ 1284 /* by older ones */
1285 EV_TV_SET (tv, delay);
639 select (0, 0, 0, 0, &tv); 1286 select (0, 0, 0, 0, &tv);
640#endif 1287#endif
641 } 1288 }
642} 1289}
643 1290
644/*****************************************************************************/ 1291/*****************************************************************************/
645 1292
646#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1293#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
647 1294
648/* find a suitable new size for the given array, */ 1295/* find a suitable new size for the given array, */
649/* hopefully by rounding to a ncie-to-malloc size */ 1296/* hopefully by rounding to a nice-to-malloc size */
650inline_size int 1297inline_size int
651array_nextsize (int elem, int cur, int cnt) 1298array_nextsize (int elem, int cur, int cnt)
652{ 1299{
653 int ncur = cur + 1; 1300 int ncur = cur + 1;
654 1301
655 do 1302 do
656 ncur <<= 1; 1303 ncur <<= 1;
657 while (cnt > ncur); 1304 while (cnt > ncur);
658 1305
659 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1306 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
660 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1307 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
661 { 1308 {
662 ncur *= elem; 1309 ncur *= elem;
663 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1310 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
664 ncur = ncur - sizeof (void *) * 4; 1311 ncur = ncur - sizeof (void *) * 4;
… …
666 } 1313 }
667 1314
668 return ncur; 1315 return ncur;
669} 1316}
670 1317
671static noinline void * 1318static void * noinline ecb_cold
672array_realloc (int elem, void *base, int *cur, int cnt) 1319array_realloc (int elem, void *base, int *cur, int cnt)
673{ 1320{
674 *cur = array_nextsize (elem, *cur, cnt); 1321 *cur = array_nextsize (elem, *cur, cnt);
675 return ev_realloc (base, elem * *cur); 1322 return ev_realloc (base, elem * *cur);
676} 1323}
… …
679 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1326 memset ((void *)(base), 0, sizeof (*(base)) * (count))
680 1327
681#define array_needsize(type,base,cur,cnt,init) \ 1328#define array_needsize(type,base,cur,cnt,init) \
682 if (expect_false ((cnt) > (cur))) \ 1329 if (expect_false ((cnt) > (cur))) \
683 { \ 1330 { \
684 int ocur_ = (cur); \ 1331 int ecb_unused ocur_ = (cur); \
685 (base) = (type *)array_realloc \ 1332 (base) = (type *)array_realloc \
686 (sizeof (type), (base), &(cur), (cnt)); \ 1333 (sizeof (type), (base), &(cur), (cnt)); \
687 init ((base) + (ocur_), (cur) - ocur_); \ 1334 init ((base) + (ocur_), (cur) - ocur_); \
688 } 1335 }
689 1336
… …
750} 1397}
751 1398
752/*****************************************************************************/ 1399/*****************************************************************************/
753 1400
754inline_speed void 1401inline_speed void
755fd_event (EV_P_ int fd, int revents) 1402fd_event_nocheck (EV_P_ int fd, int revents)
756{ 1403{
757 ANFD *anfd = anfds + fd; 1404 ANFD *anfd = anfds + fd;
758 ev_io *w; 1405 ev_io *w;
759 1406
760 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1407 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
764 if (ev) 1411 if (ev)
765 ev_feed_event (EV_A_ (W)w, ev); 1412 ev_feed_event (EV_A_ (W)w, ev);
766 } 1413 }
767} 1414}
768 1415
1416/* do not submit kernel events for fds that have reify set */
1417/* because that means they changed while we were polling for new events */
1418inline_speed void
1419fd_event (EV_P_ int fd, int revents)
1420{
1421 ANFD *anfd = anfds + fd;
1422
1423 if (expect_true (!anfd->reify))
1424 fd_event_nocheck (EV_A_ fd, revents);
1425}
1426
769void 1427void
770ev_feed_fd_event (EV_P_ int fd, int revents) 1428ev_feed_fd_event (EV_P_ int fd, int revents)
771{ 1429{
772 if (fd >= 0 && fd < anfdmax) 1430 if (fd >= 0 && fd < anfdmax)
773 fd_event (EV_A_ fd, revents); 1431 fd_event_nocheck (EV_A_ fd, revents);
774} 1432}
775 1433
776/* make sure the external fd watch events are in-sync */ 1434/* make sure the external fd watch events are in-sync */
777/* with the kernel/libev internal state */ 1435/* with the kernel/libev internal state */
778inline_size void 1436inline_size void
779fd_reify (EV_P) 1437fd_reify (EV_P)
780{ 1438{
781 int i; 1439 int i;
782 1440
1441#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1442 for (i = 0; i < fdchangecnt; ++i)
1443 {
1444 int fd = fdchanges [i];
1445 ANFD *anfd = anfds + fd;
1446
1447 if (anfd->reify & EV__IOFDSET && anfd->head)
1448 {
1449 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1450
1451 if (handle != anfd->handle)
1452 {
1453 unsigned long arg;
1454
1455 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1456
1457 /* handle changed, but fd didn't - we need to do it in two steps */
1458 backend_modify (EV_A_ fd, anfd->events, 0);
1459 anfd->events = 0;
1460 anfd->handle = handle;
1461 }
1462 }
1463 }
1464#endif
1465
783 for (i = 0; i < fdchangecnt; ++i) 1466 for (i = 0; i < fdchangecnt; ++i)
784 { 1467 {
785 int fd = fdchanges [i]; 1468 int fd = fdchanges [i];
786 ANFD *anfd = anfds + fd; 1469 ANFD *anfd = anfds + fd;
787 ev_io *w; 1470 ev_io *w;
788 1471
789 unsigned char events = 0; 1472 unsigned char o_events = anfd->events;
1473 unsigned char o_reify = anfd->reify;
790 1474
791 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1475 anfd->reify = 0;
792 events |= (unsigned char)w->events;
793 1476
794#if EV_SELECT_IS_WINSOCKET 1477 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
795 if (events)
796 { 1478 {
797 unsigned long arg; 1479 anfd->events = 0;
798 #ifdef EV_FD_TO_WIN32_HANDLE 1480
799 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1481 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
800 #else 1482 anfd->events |= (unsigned char)w->events;
801 anfd->handle = _get_osfhandle (fd); 1483
802 #endif 1484 if (o_events != anfd->events)
803 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1485 o_reify = EV__IOFDSET; /* actually |= */
804 } 1486 }
805#endif
806 1487
807 { 1488 if (o_reify & EV__IOFDSET)
808 unsigned char o_events = anfd->events;
809 unsigned char o_reify = anfd->reify;
810
811 anfd->reify = 0;
812 anfd->events = events;
813
814 if (o_events != events || o_reify & EV__IOFDSET)
815 backend_modify (EV_A_ fd, o_events, events); 1489 backend_modify (EV_A_ fd, o_events, anfd->events);
816 }
817 } 1490 }
818 1491
819 fdchangecnt = 0; 1492 fdchangecnt = 0;
820} 1493}
821 1494
… …
833 fdchanges [fdchangecnt - 1] = fd; 1506 fdchanges [fdchangecnt - 1] = fd;
834 } 1507 }
835} 1508}
836 1509
837/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1510/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
838inline_speed void 1511inline_speed void ecb_cold
839fd_kill (EV_P_ int fd) 1512fd_kill (EV_P_ int fd)
840{ 1513{
841 ev_io *w; 1514 ev_io *w;
842 1515
843 while ((w = (ev_io *)anfds [fd].head)) 1516 while ((w = (ev_io *)anfds [fd].head))
… …
845 ev_io_stop (EV_A_ w); 1518 ev_io_stop (EV_A_ w);
846 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1519 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
847 } 1520 }
848} 1521}
849 1522
850/* check whether the given fd is atcually valid, for error recovery */ 1523/* check whether the given fd is actually valid, for error recovery */
851inline_size int 1524inline_size int ecb_cold
852fd_valid (int fd) 1525fd_valid (int fd)
853{ 1526{
854#ifdef _WIN32 1527#ifdef _WIN32
855 return _get_osfhandle (fd) != -1; 1528 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
856#else 1529#else
857 return fcntl (fd, F_GETFD) != -1; 1530 return fcntl (fd, F_GETFD) != -1;
858#endif 1531#endif
859} 1532}
860 1533
861/* called on EBADF to verify fds */ 1534/* called on EBADF to verify fds */
862static void noinline 1535static void noinline ecb_cold
863fd_ebadf (EV_P) 1536fd_ebadf (EV_P)
864{ 1537{
865 int fd; 1538 int fd;
866 1539
867 for (fd = 0; fd < anfdmax; ++fd) 1540 for (fd = 0; fd < anfdmax; ++fd)
… …
869 if (!fd_valid (fd) && errno == EBADF) 1542 if (!fd_valid (fd) && errno == EBADF)
870 fd_kill (EV_A_ fd); 1543 fd_kill (EV_A_ fd);
871} 1544}
872 1545
873/* called on ENOMEM in select/poll to kill some fds and retry */ 1546/* called on ENOMEM in select/poll to kill some fds and retry */
874static void noinline 1547static void noinline ecb_cold
875fd_enomem (EV_P) 1548fd_enomem (EV_P)
876{ 1549{
877 int fd; 1550 int fd;
878 1551
879 for (fd = anfdmax; fd--; ) 1552 for (fd = anfdmax; fd--; )
880 if (anfds [fd].events) 1553 if (anfds [fd].events)
881 { 1554 {
882 fd_kill (EV_A_ fd); 1555 fd_kill (EV_A_ fd);
883 return; 1556 break;
884 } 1557 }
885} 1558}
886 1559
887/* usually called after fork if backend needs to re-arm all fds from scratch */ 1560/* usually called after fork if backend needs to re-arm all fds from scratch */
888static void noinline 1561static void noinline
… …
893 for (fd = 0; fd < anfdmax; ++fd) 1566 for (fd = 0; fd < anfdmax; ++fd)
894 if (anfds [fd].events) 1567 if (anfds [fd].events)
895 { 1568 {
896 anfds [fd].events = 0; 1569 anfds [fd].events = 0;
897 anfds [fd].emask = 0; 1570 anfds [fd].emask = 0;
898 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1571 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
899 } 1572 }
900} 1573}
901 1574
1575/* used to prepare libev internal fd's */
1576/* this is not fork-safe */
1577inline_speed void
1578fd_intern (int fd)
1579{
1580#ifdef _WIN32
1581 unsigned long arg = 1;
1582 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1583#else
1584 fcntl (fd, F_SETFD, FD_CLOEXEC);
1585 fcntl (fd, F_SETFL, O_NONBLOCK);
1586#endif
1587}
1588
902/*****************************************************************************/ 1589/*****************************************************************************/
903 1590
904/* 1591/*
905 * the heap functions want a real array index. array index 0 uis guaranteed to not 1592 * the heap functions want a real array index. array index 0 is guaranteed to not
906 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1593 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
907 * the branching factor of the d-tree. 1594 * the branching factor of the d-tree.
908 */ 1595 */
909 1596
910/* 1597/*
… …
978 1665
979 for (;;) 1666 for (;;)
980 { 1667 {
981 int c = k << 1; 1668 int c = k << 1;
982 1669
983 if (c > N + HEAP0 - 1) 1670 if (c >= N + HEAP0)
984 break; 1671 break;
985 1672
986 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1673 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
987 ? 1 : 0; 1674 ? 1 : 0;
988 1675
… …
1024 1711
1025/* move an element suitably so it is in a correct place */ 1712/* move an element suitably so it is in a correct place */
1026inline_size void 1713inline_size void
1027adjustheap (ANHE *heap, int N, int k) 1714adjustheap (ANHE *heap, int N, int k)
1028{ 1715{
1029 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1716 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1030 upheap (heap, k); 1717 upheap (heap, k);
1031 else 1718 else
1032 downheap (heap, N, k); 1719 downheap (heap, N, k);
1033} 1720}
1034 1721
… …
1047/*****************************************************************************/ 1734/*****************************************************************************/
1048 1735
1049/* associate signal watchers to a signal signal */ 1736/* associate signal watchers to a signal signal */
1050typedef struct 1737typedef struct
1051{ 1738{
1739 EV_ATOMIC_T pending;
1740#if EV_MULTIPLICITY
1741 EV_P;
1742#endif
1052 WL head; 1743 WL head;
1053 EV_ATOMIC_T gotsig;
1054} ANSIG; 1744} ANSIG;
1055 1745
1056static ANSIG *signals; 1746static ANSIG signals [EV_NSIG - 1];
1057static int signalmax;
1058
1059static EV_ATOMIC_T gotsig;
1060 1747
1061/*****************************************************************************/ 1748/*****************************************************************************/
1062 1749
1063/* used to prepare libev internal fd's */ 1750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1064/* this is not fork-safe */
1065inline_speed void
1066fd_intern (int fd)
1067{
1068#ifdef _WIN32
1069 unsigned long arg = 1;
1070 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1071#else
1072 fcntl (fd, F_SETFD, FD_CLOEXEC);
1073 fcntl (fd, F_SETFL, O_NONBLOCK);
1074#endif
1075}
1076 1751
1077static void noinline 1752static void noinline ecb_cold
1078evpipe_init (EV_P) 1753evpipe_init (EV_P)
1079{ 1754{
1080 if (!ev_is_active (&pipe_w)) 1755 if (!ev_is_active (&pipe_w))
1081 { 1756 {
1082#if EV_USE_EVENTFD 1757# if EV_USE_EVENTFD
1758 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1759 if (evfd < 0 && errno == EINVAL)
1083 if ((evfd = eventfd (0, 0)) >= 0) 1760 evfd = eventfd (0, 0);
1761
1762 if (evfd >= 0)
1084 { 1763 {
1085 evpipe [0] = -1; 1764 evpipe [0] = -1;
1086 fd_intern (evfd); 1765 fd_intern (evfd); /* doing it twice doesn't hurt */
1087 ev_io_set (&pipe_w, evfd, EV_READ); 1766 ev_io_set (&pipe_w, evfd, EV_READ);
1088 } 1767 }
1089 else 1768 else
1090#endif 1769# endif
1091 { 1770 {
1092 while (pipe (evpipe)) 1771 while (pipe (evpipe))
1093 ev_syserr ("(libev) error creating signal/async pipe"); 1772 ev_syserr ("(libev) error creating signal/async pipe");
1094 1773
1095 fd_intern (evpipe [0]); 1774 fd_intern (evpipe [0]);
… …
1100 ev_io_start (EV_A_ &pipe_w); 1779 ev_io_start (EV_A_ &pipe_w);
1101 ev_unref (EV_A); /* watcher should not keep loop alive */ 1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1102 } 1781 }
1103} 1782}
1104 1783
1105inline_size void 1784inline_speed void
1106evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1107{ 1786{
1108 if (!*flag) 1787 if (expect_true (*flag))
1788 return;
1789
1790 *flag = 1;
1791
1792 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1793
1794 pipe_write_skipped = 1;
1795
1796 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1797
1798 if (pipe_write_wanted)
1109 { 1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1110 int old_errno = errno; /* save errno because write might clobber it */ 1804 old_errno = errno; /* save errno because write will clobber it */
1111
1112 *flag = 1;
1113 1805
1114#if EV_USE_EVENTFD 1806#if EV_USE_EVENTFD
1115 if (evfd >= 0) 1807 if (evfd >= 0)
1116 { 1808 {
1117 uint64_t counter = 1; 1809 uint64_t counter = 1;
1118 write (evfd, &counter, sizeof (uint64_t)); 1810 write (evfd, &counter, sizeof (uint64_t));
1119 } 1811 }
1120 else 1812 else
1121#endif 1813#endif
1814 {
1815 /* win32 people keep sending patches that change this write() to send() */
1816 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1817 /* so when you think this write should be a send instead, please find out */
1818 /* where your send() is from - it's definitely not the microsoft send, and */
1819 /* tell me. thank you. */
1122 write (evpipe [1], &old_errno, 1); 1820 write (evpipe [1], &(evpipe [1]), 1);
1821 }
1123 1822
1124 errno = old_errno; 1823 errno = old_errno;
1125 } 1824 }
1126} 1825}
1127 1826
1128/* called whenever the libev signal pipe */ 1827/* called whenever the libev signal pipe */
1129/* got some events (signal, async) */ 1828/* got some events (signal, async) */
1130static void 1829static void
1131pipecb (EV_P_ ev_io *iow, int revents) 1830pipecb (EV_P_ ev_io *iow, int revents)
1132{ 1831{
1832 int i;
1833
1834 if (revents & EV_READ)
1835 {
1133#if EV_USE_EVENTFD 1836#if EV_USE_EVENTFD
1134 if (evfd >= 0) 1837 if (evfd >= 0)
1135 { 1838 {
1136 uint64_t counter; 1839 uint64_t counter;
1137 read (evfd, &counter, sizeof (uint64_t)); 1840 read (evfd, &counter, sizeof (uint64_t));
1138 } 1841 }
1139 else 1842 else
1140#endif 1843#endif
1141 { 1844 {
1142 char dummy; 1845 char dummy;
1846 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1143 read (evpipe [0], &dummy, 1); 1847 read (evpipe [0], &dummy, 1);
1848 }
1849 }
1850
1851 pipe_write_skipped = 0;
1852
1853#if EV_SIGNAL_ENABLE
1854 if (sig_pending)
1144 } 1855 {
1856 sig_pending = 0;
1145 1857
1146 if (gotsig && ev_is_default_loop (EV_A)) 1858 for (i = EV_NSIG - 1; i--; )
1147 { 1859 if (expect_false (signals [i].pending))
1148 int signum;
1149 gotsig = 0;
1150
1151 for (signum = signalmax; signum--; )
1152 if (signals [signum].gotsig)
1153 ev_feed_signal_event (EV_A_ signum + 1); 1860 ev_feed_signal_event (EV_A_ i + 1);
1154 } 1861 }
1862#endif
1155 1863
1156#if EV_ASYNC_ENABLE 1864#if EV_ASYNC_ENABLE
1157 if (gotasync) 1865 if (async_pending)
1158 { 1866 {
1159 int i; 1867 async_pending = 0;
1160 gotasync = 0;
1161 1868
1162 for (i = asynccnt; i--; ) 1869 for (i = asynccnt; i--; )
1163 if (asyncs [i]->sent) 1870 if (asyncs [i]->sent)
1164 { 1871 {
1165 asyncs [i]->sent = 0; 1872 asyncs [i]->sent = 0;
… …
1169#endif 1876#endif
1170} 1877}
1171 1878
1172/*****************************************************************************/ 1879/*****************************************************************************/
1173 1880
1881void
1882ev_feed_signal (int signum)
1883{
1884#if EV_MULTIPLICITY
1885 EV_P = signals [signum - 1].loop;
1886
1887 if (!EV_A)
1888 return;
1889#endif
1890
1891 if (!ev_active (&pipe_w))
1892 return;
1893
1894 signals [signum - 1].pending = 1;
1895 evpipe_write (EV_A_ &sig_pending);
1896}
1897
1174static void 1898static void
1175ev_sighandler (int signum) 1899ev_sighandler (int signum)
1176{ 1900{
1177#if EV_MULTIPLICITY
1178 struct ev_loop *loop = &default_loop_struct;
1179#endif
1180
1181#if _WIN32 1901#ifdef _WIN32
1182 signal (signum, ev_sighandler); 1902 signal (signum, ev_sighandler);
1183#endif 1903#endif
1184 1904
1185 signals [signum - 1].gotsig = 1; 1905 ev_feed_signal (signum);
1186 evpipe_write (EV_A_ &gotsig);
1187} 1906}
1188 1907
1189void noinline 1908void noinline
1190ev_feed_signal_event (EV_P_ int signum) 1909ev_feed_signal_event (EV_P_ int signum)
1191{ 1910{
1192 WL w; 1911 WL w;
1193 1912
1913 if (expect_false (signum <= 0 || signum > EV_NSIG))
1914 return;
1915
1916 --signum;
1917
1194#if EV_MULTIPLICITY 1918#if EV_MULTIPLICITY
1195 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1919 /* it is permissible to try to feed a signal to the wrong loop */
1196#endif 1920 /* or, likely more useful, feeding a signal nobody is waiting for */
1197 1921
1198 --signum; 1922 if (expect_false (signals [signum].loop != EV_A))
1199
1200 if (signum < 0 || signum >= signalmax)
1201 return; 1923 return;
1924#endif
1202 1925
1203 signals [signum].gotsig = 0; 1926 signals [signum].pending = 0;
1204 1927
1205 for (w = signals [signum].head; w; w = w->next) 1928 for (w = signals [signum].head; w; w = w->next)
1206 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1929 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1207} 1930}
1208 1931
1932#if EV_USE_SIGNALFD
1933static void
1934sigfdcb (EV_P_ ev_io *iow, int revents)
1935{
1936 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1937
1938 for (;;)
1939 {
1940 ssize_t res = read (sigfd, si, sizeof (si));
1941
1942 /* not ISO-C, as res might be -1, but works with SuS */
1943 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1944 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1945
1946 if (res < (ssize_t)sizeof (si))
1947 break;
1948 }
1949}
1950#endif
1951
1952#endif
1953
1209/*****************************************************************************/ 1954/*****************************************************************************/
1210 1955
1956#if EV_CHILD_ENABLE
1211static WL childs [EV_PID_HASHSIZE]; 1957static WL childs [EV_PID_HASHSIZE];
1212
1213#ifndef _WIN32
1214 1958
1215static ev_signal childev; 1959static ev_signal childev;
1216 1960
1217#ifndef WIFCONTINUED 1961#ifndef WIFCONTINUED
1218# define WIFCONTINUED(status) 0 1962# define WIFCONTINUED(status) 0
… …
1223child_reap (EV_P_ int chain, int pid, int status) 1967child_reap (EV_P_ int chain, int pid, int status)
1224{ 1968{
1225 ev_child *w; 1969 ev_child *w;
1226 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1970 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1227 1971
1228 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1972 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1229 { 1973 {
1230 if ((w->pid == pid || !w->pid) 1974 if ((w->pid == pid || !w->pid)
1231 && (!traced || (w->flags & 1))) 1975 && (!traced || (w->flags & 1)))
1232 { 1976 {
1233 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1977 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1258 /* make sure we are called again until all children have been reaped */ 2002 /* make sure we are called again until all children have been reaped */
1259 /* we need to do it this way so that the callback gets called before we continue */ 2003 /* we need to do it this way so that the callback gets called before we continue */
1260 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2004 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1261 2005
1262 child_reap (EV_A_ pid, pid, status); 2006 child_reap (EV_A_ pid, pid, status);
1263 if (EV_PID_HASHSIZE > 1) 2007 if ((EV_PID_HASHSIZE) > 1)
1264 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2008 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1265} 2009}
1266 2010
1267#endif 2011#endif
1268 2012
1269/*****************************************************************************/ 2013/*****************************************************************************/
1270 2014
2015#if EV_USE_IOCP
2016# include "ev_iocp.c"
2017#endif
1271#if EV_USE_PORT 2018#if EV_USE_PORT
1272# include "ev_port.c" 2019# include "ev_port.c"
1273#endif 2020#endif
1274#if EV_USE_KQUEUE 2021#if EV_USE_KQUEUE
1275# include "ev_kqueue.c" 2022# include "ev_kqueue.c"
… …
1282#endif 2029#endif
1283#if EV_USE_SELECT 2030#if EV_USE_SELECT
1284# include "ev_select.c" 2031# include "ev_select.c"
1285#endif 2032#endif
1286 2033
1287int 2034int ecb_cold
1288ev_version_major (void) 2035ev_version_major (void)
1289{ 2036{
1290 return EV_VERSION_MAJOR; 2037 return EV_VERSION_MAJOR;
1291} 2038}
1292 2039
1293int 2040int ecb_cold
1294ev_version_minor (void) 2041ev_version_minor (void)
1295{ 2042{
1296 return EV_VERSION_MINOR; 2043 return EV_VERSION_MINOR;
1297} 2044}
1298 2045
1299/* return true if we are running with elevated privileges and should ignore env variables */ 2046/* return true if we are running with elevated privileges and should ignore env variables */
1300int inline_size 2047int inline_size ecb_cold
1301enable_secure (void) 2048enable_secure (void)
1302{ 2049{
1303#ifdef _WIN32 2050#ifdef _WIN32
1304 return 0; 2051 return 0;
1305#else 2052#else
1306 return getuid () != geteuid () 2053 return getuid () != geteuid ()
1307 || getgid () != getegid (); 2054 || getgid () != getegid ();
1308#endif 2055#endif
1309} 2056}
1310 2057
1311unsigned int 2058unsigned int ecb_cold
1312ev_supported_backends (void) 2059ev_supported_backends (void)
1313{ 2060{
1314 unsigned int flags = 0; 2061 unsigned int flags = 0;
1315 2062
1316 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1320 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2067 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1321 2068
1322 return flags; 2069 return flags;
1323} 2070}
1324 2071
1325unsigned int 2072unsigned int ecb_cold
1326ev_recommended_backends (void) 2073ev_recommended_backends (void)
1327{ 2074{
1328 unsigned int flags = ev_supported_backends (); 2075 unsigned int flags = ev_supported_backends ();
1329 2076
1330#ifndef __NetBSD__ 2077#ifndef __NetBSD__
… …
1335#ifdef __APPLE__ 2082#ifdef __APPLE__
1336 /* only select works correctly on that "unix-certified" platform */ 2083 /* only select works correctly on that "unix-certified" platform */
1337 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2084 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1338 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2085 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1339#endif 2086#endif
2087#ifdef __FreeBSD__
2088 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2089#endif
1340 2090
1341 return flags; 2091 return flags;
1342} 2092}
1343 2093
1344unsigned int 2094unsigned int ecb_cold
1345ev_embeddable_backends (void) 2095ev_embeddable_backends (void)
1346{ 2096{
1347 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1348 2098
1349 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2099 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1350 /* please fix it and tell me how to detect the fix */ 2100 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1351 flags &= ~EVBACKEND_EPOLL; 2101 flags &= ~EVBACKEND_EPOLL;
1352 2102
1353 return flags; 2103 return flags;
1354} 2104}
1355 2105
1356unsigned int 2106unsigned int
1357ev_backend (EV_P) 2107ev_backend (EV_P)
1358{ 2108{
1359 return backend; 2109 return backend;
1360} 2110}
1361 2111
2112#if EV_FEATURE_API
1362unsigned int 2113unsigned int
1363ev_loop_count (EV_P) 2114ev_iteration (EV_P)
1364{ 2115{
1365 return loop_count; 2116 return loop_count;
1366} 2117}
1367 2118
1368unsigned int 2119unsigned int
1369ev_loop_depth (EV_P) 2120ev_depth (EV_P)
1370{ 2121{
1371 return loop_depth; 2122 return loop_depth;
1372} 2123}
1373 2124
1374void 2125void
… …
1381ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1382{ 2133{
1383 timeout_blocktime = interval; 2134 timeout_blocktime = interval;
1384} 2135}
1385 2136
2137void
2138ev_set_userdata (EV_P_ void *data)
2139{
2140 userdata = data;
2141}
2142
2143void *
2144ev_userdata (EV_P)
2145{
2146 return userdata;
2147}
2148
2149void
2150ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2151{
2152 invoke_cb = invoke_pending_cb;
2153}
2154
2155void
2156ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2157{
2158 release_cb = release;
2159 acquire_cb = acquire;
2160}
2161#endif
2162
1386/* initialise a loop structure, must be zero-initialised */ 2163/* initialise a loop structure, must be zero-initialised */
1387static void noinline 2164static void noinline ecb_cold
1388loop_init (EV_P_ unsigned int flags) 2165loop_init (EV_P_ unsigned int flags)
1389{ 2166{
1390 if (!backend) 2167 if (!backend)
1391 { 2168 {
2169 origflags = flags;
2170
1392#if EV_USE_REALTIME 2171#if EV_USE_REALTIME
1393 if (!have_realtime) 2172 if (!have_realtime)
1394 { 2173 {
1395 struct timespec ts; 2174 struct timespec ts;
1396 2175
… …
1407 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2186 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1408 have_monotonic = 1; 2187 have_monotonic = 1;
1409 } 2188 }
1410#endif 2189#endif
1411 2190
1412 ev_rt_now = ev_time ();
1413 mn_now = get_clock ();
1414 now_floor = mn_now;
1415 rtmn_diff = ev_rt_now - mn_now;
1416
1417 io_blocktime = 0.;
1418 timeout_blocktime = 0.;
1419 backend = 0;
1420 backend_fd = -1;
1421 gotasync = 0;
1422#if EV_USE_INOTIFY
1423 fs_fd = -2;
1424#endif
1425
1426 /* pid check not overridable via env */ 2191 /* pid check not overridable via env */
1427#ifndef _WIN32 2192#ifndef _WIN32
1428 if (flags & EVFLAG_FORKCHECK) 2193 if (flags & EVFLAG_FORKCHECK)
1429 curpid = getpid (); 2194 curpid = getpid ();
1430#endif 2195#endif
… …
1432 if (!(flags & EVFLAG_NOENV) 2197 if (!(flags & EVFLAG_NOENV)
1433 && !enable_secure () 2198 && !enable_secure ()
1434 && getenv ("LIBEV_FLAGS")) 2199 && getenv ("LIBEV_FLAGS"))
1435 flags = atoi (getenv ("LIBEV_FLAGS")); 2200 flags = atoi (getenv ("LIBEV_FLAGS"));
1436 2201
1437 if (!(flags & 0x0000ffffU)) 2202 ev_rt_now = ev_time ();
2203 mn_now = get_clock ();
2204 now_floor = mn_now;
2205 rtmn_diff = ev_rt_now - mn_now;
2206#if EV_FEATURE_API
2207 invoke_cb = ev_invoke_pending;
2208#endif
2209
2210 io_blocktime = 0.;
2211 timeout_blocktime = 0.;
2212 backend = 0;
2213 backend_fd = -1;
2214 sig_pending = 0;
2215#if EV_ASYNC_ENABLE
2216 async_pending = 0;
2217#endif
2218 pipe_write_skipped = 0;
2219 pipe_write_wanted = 0;
2220#if EV_USE_INOTIFY
2221 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2222#endif
2223#if EV_USE_SIGNALFD
2224 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2225#endif
2226
2227 if (!(flags & EVBACKEND_MASK))
1438 flags |= ev_recommended_backends (); 2228 flags |= ev_recommended_backends ();
1439 2229
2230#if EV_USE_IOCP
2231 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2232#endif
1440#if EV_USE_PORT 2233#if EV_USE_PORT
1441 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2234 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1442#endif 2235#endif
1443#if EV_USE_KQUEUE 2236#if EV_USE_KQUEUE
1444 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2237 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1453 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2246 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1454#endif 2247#endif
1455 2248
1456 ev_prepare_init (&pending_w, pendingcb); 2249 ev_prepare_init (&pending_w, pendingcb);
1457 2250
2251#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1458 ev_init (&pipe_w, pipecb); 2252 ev_init (&pipe_w, pipecb);
1459 ev_set_priority (&pipe_w, EV_MAXPRI); 2253 ev_set_priority (&pipe_w, EV_MAXPRI);
2254#endif
1460 } 2255 }
1461} 2256}
1462 2257
1463/* free up a loop structure */ 2258/* free up a loop structure */
1464static void noinline 2259void ecb_cold
1465loop_destroy (EV_P) 2260ev_loop_destroy (EV_P)
1466{ 2261{
1467 int i; 2262 int i;
1468 2263
2264#if EV_MULTIPLICITY
2265 /* mimic free (0) */
2266 if (!EV_A)
2267 return;
2268#endif
2269
2270#if EV_CLEANUP_ENABLE
2271 /* queue cleanup watchers (and execute them) */
2272 if (expect_false (cleanupcnt))
2273 {
2274 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2275 EV_INVOKE_PENDING;
2276 }
2277#endif
2278
2279#if EV_CHILD_ENABLE
2280 if (ev_is_active (&childev))
2281 {
2282 ev_ref (EV_A); /* child watcher */
2283 ev_signal_stop (EV_A_ &childev);
2284 }
2285#endif
2286
1469 if (ev_is_active (&pipe_w)) 2287 if (ev_is_active (&pipe_w))
1470 { 2288 {
1471 ev_ref (EV_A); /* signal watcher */ 2289 /*ev_ref (EV_A);*/
1472 ev_io_stop (EV_A_ &pipe_w); 2290 /*ev_io_stop (EV_A_ &pipe_w);*/
1473 2291
1474#if EV_USE_EVENTFD 2292#if EV_USE_EVENTFD
1475 if (evfd >= 0) 2293 if (evfd >= 0)
1476 close (evfd); 2294 close (evfd);
1477#endif 2295#endif
1478 2296
1479 if (evpipe [0] >= 0) 2297 if (evpipe [0] >= 0)
1480 { 2298 {
1481 close (evpipe [0]); 2299 EV_WIN32_CLOSE_FD (evpipe [0]);
1482 close (evpipe [1]); 2300 EV_WIN32_CLOSE_FD (evpipe [1]);
1483 } 2301 }
1484 } 2302 }
2303
2304#if EV_USE_SIGNALFD
2305 if (ev_is_active (&sigfd_w))
2306 close (sigfd);
2307#endif
1485 2308
1486#if EV_USE_INOTIFY 2309#if EV_USE_INOTIFY
1487 if (fs_fd >= 0) 2310 if (fs_fd >= 0)
1488 close (fs_fd); 2311 close (fs_fd);
1489#endif 2312#endif
1490 2313
1491 if (backend_fd >= 0) 2314 if (backend_fd >= 0)
1492 close (backend_fd); 2315 close (backend_fd);
1493 2316
2317#if EV_USE_IOCP
2318 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2319#endif
1494#if EV_USE_PORT 2320#if EV_USE_PORT
1495 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2321 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1496#endif 2322#endif
1497#if EV_USE_KQUEUE 2323#if EV_USE_KQUEUE
1498 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2324 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1513#if EV_IDLE_ENABLE 2339#if EV_IDLE_ENABLE
1514 array_free (idle, [i]); 2340 array_free (idle, [i]);
1515#endif 2341#endif
1516 } 2342 }
1517 2343
1518 ev_free (anfds); anfdmax = 0; 2344 ev_free (anfds); anfds = 0; anfdmax = 0;
1519 2345
1520 /* have to use the microsoft-never-gets-it-right macro */ 2346 /* have to use the microsoft-never-gets-it-right macro */
1521 array_free (rfeed, EMPTY); 2347 array_free (rfeed, EMPTY);
1522 array_free (fdchange, EMPTY); 2348 array_free (fdchange, EMPTY);
1523 array_free (timer, EMPTY); 2349 array_free (timer, EMPTY);
… …
1525 array_free (periodic, EMPTY); 2351 array_free (periodic, EMPTY);
1526#endif 2352#endif
1527#if EV_FORK_ENABLE 2353#if EV_FORK_ENABLE
1528 array_free (fork, EMPTY); 2354 array_free (fork, EMPTY);
1529#endif 2355#endif
2356#if EV_CLEANUP_ENABLE
2357 array_free (cleanup, EMPTY);
2358#endif
1530 array_free (prepare, EMPTY); 2359 array_free (prepare, EMPTY);
1531 array_free (check, EMPTY); 2360 array_free (check, EMPTY);
1532#if EV_ASYNC_ENABLE 2361#if EV_ASYNC_ENABLE
1533 array_free (async, EMPTY); 2362 array_free (async, EMPTY);
1534#endif 2363#endif
1535 2364
1536 backend = 0; 2365 backend = 0;
2366
2367#if EV_MULTIPLICITY
2368 if (ev_is_default_loop (EV_A))
2369#endif
2370 ev_default_loop_ptr = 0;
2371#if EV_MULTIPLICITY
2372 else
2373 ev_free (EV_A);
2374#endif
1537} 2375}
1538 2376
1539#if EV_USE_INOTIFY 2377#if EV_USE_INOTIFY
1540inline_size void infy_fork (EV_P); 2378inline_size void infy_fork (EV_P);
1541#endif 2379#endif
… …
1556 infy_fork (EV_A); 2394 infy_fork (EV_A);
1557#endif 2395#endif
1558 2396
1559 if (ev_is_active (&pipe_w)) 2397 if (ev_is_active (&pipe_w))
1560 { 2398 {
1561 /* this "locks" the handlers against writing to the pipe */ 2399 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1562 /* while we modify the fd vars */
1563 gotsig = 1;
1564#if EV_ASYNC_ENABLE
1565 gotasync = 1;
1566#endif
1567 2400
1568 ev_ref (EV_A); 2401 ev_ref (EV_A);
1569 ev_io_stop (EV_A_ &pipe_w); 2402 ev_io_stop (EV_A_ &pipe_w);
1570 2403
1571#if EV_USE_EVENTFD 2404#if EV_USE_EVENTFD
… …
1573 close (evfd); 2406 close (evfd);
1574#endif 2407#endif
1575 2408
1576 if (evpipe [0] >= 0) 2409 if (evpipe [0] >= 0)
1577 { 2410 {
1578 close (evpipe [0]); 2411 EV_WIN32_CLOSE_FD (evpipe [0]);
1579 close (evpipe [1]); 2412 EV_WIN32_CLOSE_FD (evpipe [1]);
1580 } 2413 }
1581 2414
2415#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1582 evpipe_init (EV_A); 2416 evpipe_init (EV_A);
1583 /* now iterate over everything, in case we missed something */ 2417 /* now iterate over everything, in case we missed something */
1584 pipecb (EV_A_ &pipe_w, EV_READ); 2418 pipecb (EV_A_ &pipe_w, EV_READ);
2419#endif
1585 } 2420 }
1586 2421
1587 postfork = 0; 2422 postfork = 0;
1588} 2423}
1589 2424
1590#if EV_MULTIPLICITY 2425#if EV_MULTIPLICITY
1591 2426
1592struct ev_loop * 2427struct ev_loop * ecb_cold
1593ev_loop_new (unsigned int flags) 2428ev_loop_new (unsigned int flags)
1594{ 2429{
1595 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1596 2431
1597 memset (loop, 0, sizeof (struct ev_loop)); 2432 memset (EV_A, 0, sizeof (struct ev_loop));
1598
1599 loop_init (EV_A_ flags); 2433 loop_init (EV_A_ flags);
1600 2434
1601 if (ev_backend (EV_A)) 2435 if (ev_backend (EV_A))
1602 return loop; 2436 return EV_A;
1603 2437
2438 ev_free (EV_A);
1604 return 0; 2439 return 0;
1605} 2440}
1606 2441
1607void 2442#endif /* multiplicity */
1608ev_loop_destroy (EV_P)
1609{
1610 loop_destroy (EV_A);
1611 ev_free (loop);
1612}
1613
1614void
1615ev_loop_fork (EV_P)
1616{
1617 postfork = 1; /* must be in line with ev_default_fork */
1618}
1619 2443
1620#if EV_VERIFY 2444#if EV_VERIFY
1621static void noinline 2445static void noinline ecb_cold
1622verify_watcher (EV_P_ W w) 2446verify_watcher (EV_P_ W w)
1623{ 2447{
1624 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2448 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1625 2449
1626 if (w->pending) 2450 if (w->pending)
1627 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2451 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1628} 2452}
1629 2453
1630static void noinline 2454static void noinline ecb_cold
1631verify_heap (EV_P_ ANHE *heap, int N) 2455verify_heap (EV_P_ ANHE *heap, int N)
1632{ 2456{
1633 int i; 2457 int i;
1634 2458
1635 for (i = HEAP0; i < N + HEAP0; ++i) 2459 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1640 2464
1641 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2465 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1642 } 2466 }
1643} 2467}
1644 2468
1645static void noinline 2469static void noinline ecb_cold
1646array_verify (EV_P_ W *ws, int cnt) 2470array_verify (EV_P_ W *ws, int cnt)
1647{ 2471{
1648 while (cnt--) 2472 while (cnt--)
1649 { 2473 {
1650 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2474 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1651 verify_watcher (EV_A_ ws [cnt]); 2475 verify_watcher (EV_A_ ws [cnt]);
1652 } 2476 }
1653} 2477}
1654#endif 2478#endif
1655 2479
1656void 2480#if EV_FEATURE_API
2481void ecb_cold
1657ev_loop_verify (EV_P) 2482ev_verify (EV_P)
1658{ 2483{
1659#if EV_VERIFY 2484#if EV_VERIFY
1660 int i; 2485 int i;
1661 WL w; 2486 WL w;
1662 2487
… …
1696#if EV_FORK_ENABLE 2521#if EV_FORK_ENABLE
1697 assert (forkmax >= forkcnt); 2522 assert (forkmax >= forkcnt);
1698 array_verify (EV_A_ (W *)forks, forkcnt); 2523 array_verify (EV_A_ (W *)forks, forkcnt);
1699#endif 2524#endif
1700 2525
2526#if EV_CLEANUP_ENABLE
2527 assert (cleanupmax >= cleanupcnt);
2528 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2529#endif
2530
1701#if EV_ASYNC_ENABLE 2531#if EV_ASYNC_ENABLE
1702 assert (asyncmax >= asynccnt); 2532 assert (asyncmax >= asynccnt);
1703 array_verify (EV_A_ (W *)asyncs, asynccnt); 2533 array_verify (EV_A_ (W *)asyncs, asynccnt);
1704#endif 2534#endif
1705 2535
2536#if EV_PREPARE_ENABLE
1706 assert (preparemax >= preparecnt); 2537 assert (preparemax >= preparecnt);
1707 array_verify (EV_A_ (W *)prepares, preparecnt); 2538 array_verify (EV_A_ (W *)prepares, preparecnt);
2539#endif
1708 2540
2541#if EV_CHECK_ENABLE
1709 assert (checkmax >= checkcnt); 2542 assert (checkmax >= checkcnt);
1710 array_verify (EV_A_ (W *)checks, checkcnt); 2543 array_verify (EV_A_ (W *)checks, checkcnt);
2544#endif
1711 2545
1712# if 0 2546# if 0
2547#if EV_CHILD_ENABLE
1713 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2548 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1714 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2549 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2550#endif
1715# endif 2551# endif
1716#endif 2552#endif
1717} 2553}
1718 2554#endif
1719#endif /* multiplicity */
1720 2555
1721#if EV_MULTIPLICITY 2556#if EV_MULTIPLICITY
1722struct ev_loop * 2557struct ev_loop * ecb_cold
1723ev_default_loop_init (unsigned int flags)
1724#else 2558#else
1725int 2559int
2560#endif
1726ev_default_loop (unsigned int flags) 2561ev_default_loop (unsigned int flags)
1727#endif
1728{ 2562{
1729 if (!ev_default_loop_ptr) 2563 if (!ev_default_loop_ptr)
1730 { 2564 {
1731#if EV_MULTIPLICITY 2565#if EV_MULTIPLICITY
1732 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2566 EV_P = ev_default_loop_ptr = &default_loop_struct;
1733#else 2567#else
1734 ev_default_loop_ptr = 1; 2568 ev_default_loop_ptr = 1;
1735#endif 2569#endif
1736 2570
1737 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1738 2572
1739 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1740 { 2574 {
1741#ifndef _WIN32 2575#if EV_CHILD_ENABLE
1742 ev_signal_init (&childev, childcb, SIGCHLD); 2576 ev_signal_init (&childev, childcb, SIGCHLD);
1743 ev_set_priority (&childev, EV_MAXPRI); 2577 ev_set_priority (&childev, EV_MAXPRI);
1744 ev_signal_start (EV_A_ &childev); 2578 ev_signal_start (EV_A_ &childev);
1745 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2579 ev_unref (EV_A); /* child watcher should not keep loop alive */
1746#endif 2580#endif
… …
1751 2585
1752 return ev_default_loop_ptr; 2586 return ev_default_loop_ptr;
1753} 2587}
1754 2588
1755void 2589void
1756ev_default_destroy (void) 2590ev_loop_fork (EV_P)
1757{ 2591{
1758#if EV_MULTIPLICITY
1759 struct ev_loop *loop = ev_default_loop_ptr;
1760#endif
1761
1762 ev_default_loop_ptr = 0;
1763
1764#ifndef _WIN32
1765 ev_ref (EV_A); /* child watcher */
1766 ev_signal_stop (EV_A_ &childev);
1767#endif
1768
1769 loop_destroy (EV_A);
1770}
1771
1772void
1773ev_default_fork (void)
1774{
1775#if EV_MULTIPLICITY
1776 struct ev_loop *loop = ev_default_loop_ptr;
1777#endif
1778
1779 postfork = 1; /* must be in line with ev_loop_fork */ 2592 postfork = 1; /* must be in line with ev_default_fork */
1780} 2593}
1781 2594
1782/*****************************************************************************/ 2595/*****************************************************************************/
1783 2596
1784void 2597void
1785ev_invoke (EV_P_ void *w, int revents) 2598ev_invoke (EV_P_ void *w, int revents)
1786{ 2599{
1787 EV_CB_INVOKE ((W)w, revents); 2600 EV_CB_INVOKE ((W)w, revents);
1788} 2601}
1789 2602
1790inline_speed void 2603unsigned int
1791call_pending (EV_P) 2604ev_pending_count (EV_P)
2605{
2606 int pri;
2607 unsigned int count = 0;
2608
2609 for (pri = NUMPRI; pri--; )
2610 count += pendingcnt [pri];
2611
2612 return count;
2613}
2614
2615void noinline
2616ev_invoke_pending (EV_P)
1792{ 2617{
1793 int pri; 2618 int pri;
1794 2619
1795 for (pri = NUMPRI; pri--; ) 2620 for (pri = NUMPRI; pri--; )
1796 while (pendingcnt [pri]) 2621 while (pendingcnt [pri])
1797 { 2622 {
1798 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2623 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1799
1800 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1801 /* ^ this is no longer true, as pending_w could be here */
1802 2624
1803 p->w->pending = 0; 2625 p->w->pending = 0;
1804 EV_CB_INVOKE (p->w, p->events); 2626 EV_CB_INVOKE (p->w, p->events);
1805 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
1806 } 2628 }
… …
1863 EV_FREQUENT_CHECK; 2685 EV_FREQUENT_CHECK;
1864 feed_reverse (EV_A_ (W)w); 2686 feed_reverse (EV_A_ (W)w);
1865 } 2687 }
1866 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2688 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1867 2689
1868 feed_reverse_done (EV_A_ EV_TIMEOUT); 2690 feed_reverse_done (EV_A_ EV_TIMER);
1869 } 2691 }
1870} 2692}
1871 2693
1872#if EV_PERIODIC_ENABLE 2694#if EV_PERIODIC_ENABLE
2695
2696static void noinline
2697periodic_recalc (EV_P_ ev_periodic *w)
2698{
2699 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2700 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2701
2702 /* the above almost always errs on the low side */
2703 while (at <= ev_rt_now)
2704 {
2705 ev_tstamp nat = at + w->interval;
2706
2707 /* when resolution fails us, we use ev_rt_now */
2708 if (expect_false (nat == at))
2709 {
2710 at = ev_rt_now;
2711 break;
2712 }
2713
2714 at = nat;
2715 }
2716
2717 ev_at (w) = at;
2718}
2719
1873/* make periodics pending */ 2720/* make periodics pending */
1874inline_size void 2721inline_size void
1875periodics_reify (EV_P) 2722periodics_reify (EV_P)
1876{ 2723{
1877 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
… …
1896 ANHE_at_cache (periodics [HEAP0]); 2743 ANHE_at_cache (periodics [HEAP0]);
1897 downheap (periodics, periodiccnt, HEAP0); 2744 downheap (periodics, periodiccnt, HEAP0);
1898 } 2745 }
1899 else if (w->interval) 2746 else if (w->interval)
1900 { 2747 {
1901 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2748 periodic_recalc (EV_A_ w);
1902 /* if next trigger time is not sufficiently in the future, put it there */
1903 /* this might happen because of floating point inexactness */
1904 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1905 {
1906 ev_at (w) += w->interval;
1907
1908 /* if interval is unreasonably low we might still have a time in the past */
1909 /* so correct this. this will make the periodic very inexact, but the user */
1910 /* has effectively asked to get triggered more often than possible */
1911 if (ev_at (w) < ev_rt_now)
1912 ev_at (w) = ev_rt_now;
1913 }
1914
1915 ANHE_at_cache (periodics [HEAP0]); 2749 ANHE_at_cache (periodics [HEAP0]);
1916 downheap (periodics, periodiccnt, HEAP0); 2750 downheap (periodics, periodiccnt, HEAP0);
1917 } 2751 }
1918 else 2752 else
1919 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2753 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1926 feed_reverse_done (EV_A_ EV_PERIODIC); 2760 feed_reverse_done (EV_A_ EV_PERIODIC);
1927 } 2761 }
1928} 2762}
1929 2763
1930/* simply recalculate all periodics */ 2764/* simply recalculate all periodics */
1931/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2765/* TODO: maybe ensure that at least one event happens when jumping forward? */
1932static void noinline 2766static void noinline ecb_cold
1933periodics_reschedule (EV_P) 2767periodics_reschedule (EV_P)
1934{ 2768{
1935 int i; 2769 int i;
1936 2770
1937 /* adjust periodics after time jump */ 2771 /* adjust periodics after time jump */
… …
1940 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2774 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1941 2775
1942 if (w->reschedule_cb) 2776 if (w->reschedule_cb)
1943 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2777 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1944 else if (w->interval) 2778 else if (w->interval)
1945 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2779 periodic_recalc (EV_A_ w);
1946 2780
1947 ANHE_at_cache (periodics [i]); 2781 ANHE_at_cache (periodics [i]);
1948 } 2782 }
1949 2783
1950 reheap (periodics, periodiccnt); 2784 reheap (periodics, periodiccnt);
1951} 2785}
1952#endif 2786#endif
1953 2787
1954/* adjust all timers by a given offset */ 2788/* adjust all timers by a given offset */
1955static void noinline 2789static void noinline ecb_cold
1956timers_reschedule (EV_P_ ev_tstamp adjust) 2790timers_reschedule (EV_P_ ev_tstamp adjust)
1957{ 2791{
1958 int i; 2792 int i;
1959 2793
1960 for (i = 0; i < timercnt; ++i) 2794 for (i = 0; i < timercnt; ++i)
… …
1964 ANHE_at_cache (*he); 2798 ANHE_at_cache (*he);
1965 } 2799 }
1966} 2800}
1967 2801
1968/* fetch new monotonic and realtime times from the kernel */ 2802/* fetch new monotonic and realtime times from the kernel */
1969/* also detetc if there was a timejump, and act accordingly */ 2803/* also detect if there was a timejump, and act accordingly */
1970inline_speed void 2804inline_speed void
1971time_update (EV_P_ ev_tstamp max_block) 2805time_update (EV_P_ ev_tstamp max_block)
1972{ 2806{
1973#if EV_USE_MONOTONIC 2807#if EV_USE_MONOTONIC
1974 if (expect_true (have_monotonic)) 2808 if (expect_true (have_monotonic))
… …
1997 * doesn't hurt either as we only do this on time-jumps or 2831 * doesn't hurt either as we only do this on time-jumps or
1998 * in the unlikely event of having been preempted here. 2832 * in the unlikely event of having been preempted here.
1999 */ 2833 */
2000 for (i = 4; --i; ) 2834 for (i = 4; --i; )
2001 { 2835 {
2836 ev_tstamp diff;
2002 rtmn_diff = ev_rt_now - mn_now; 2837 rtmn_diff = ev_rt_now - mn_now;
2003 2838
2839 diff = odiff - rtmn_diff;
2840
2004 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2841 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2005 return; /* all is well */ 2842 return; /* all is well */
2006 2843
2007 ev_rt_now = ev_time (); 2844 ev_rt_now = ev_time ();
2008 mn_now = get_clock (); 2845 mn_now = get_clock ();
2009 now_floor = mn_now; 2846 now_floor = mn_now;
… …
2032 mn_now = ev_rt_now; 2869 mn_now = ev_rt_now;
2033 } 2870 }
2034} 2871}
2035 2872
2036void 2873void
2037ev_loop (EV_P_ int flags) 2874ev_run (EV_P_ int flags)
2038{ 2875{
2876#if EV_FEATURE_API
2039 ++loop_depth; 2877 ++loop_depth;
2878#endif
2040 2879
2880 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2881
2041 loop_done = EVUNLOOP_CANCEL; 2882 loop_done = EVBREAK_CANCEL;
2042 2883
2043 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2884 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2044 2885
2045 do 2886 do
2046 { 2887 {
2047#if EV_VERIFY >= 2 2888#if EV_VERIFY >= 2
2048 ev_loop_verify (EV_A); 2889 ev_verify (EV_A);
2049#endif 2890#endif
2050 2891
2051#ifndef _WIN32 2892#ifndef _WIN32
2052 if (expect_false (curpid)) /* penalise the forking check even more */ 2893 if (expect_false (curpid)) /* penalise the forking check even more */
2053 if (expect_false (getpid () != curpid)) 2894 if (expect_false (getpid () != curpid))
… …
2061 /* we might have forked, so queue fork handlers */ 2902 /* we might have forked, so queue fork handlers */
2062 if (expect_false (postfork)) 2903 if (expect_false (postfork))
2063 if (forkcnt) 2904 if (forkcnt)
2064 { 2905 {
2065 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2906 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2066 call_pending (EV_A); 2907 EV_INVOKE_PENDING;
2067 } 2908 }
2068#endif 2909#endif
2069 2910
2911#if EV_PREPARE_ENABLE
2070 /* queue prepare watchers (and execute them) */ 2912 /* queue prepare watchers (and execute them) */
2071 if (expect_false (preparecnt)) 2913 if (expect_false (preparecnt))
2072 { 2914 {
2073 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2915 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2074 call_pending (EV_A); 2916 EV_INVOKE_PENDING;
2075 } 2917 }
2918#endif
2919
2920 if (expect_false (loop_done))
2921 break;
2076 2922
2077 /* we might have forked, so reify kernel state if necessary */ 2923 /* we might have forked, so reify kernel state if necessary */
2078 if (expect_false (postfork)) 2924 if (expect_false (postfork))
2079 loop_fork (EV_A); 2925 loop_fork (EV_A);
2080 2926
… …
2084 /* calculate blocking time */ 2930 /* calculate blocking time */
2085 { 2931 {
2086 ev_tstamp waittime = 0.; 2932 ev_tstamp waittime = 0.;
2087 ev_tstamp sleeptime = 0.; 2933 ev_tstamp sleeptime = 0.;
2088 2934
2935 /* remember old timestamp for io_blocktime calculation */
2936 ev_tstamp prev_mn_now = mn_now;
2937
2938 /* update time to cancel out callback processing overhead */
2939 time_update (EV_A_ 1e100);
2940
2941 /* from now on, we want a pipe-wake-up */
2942 pipe_write_wanted = 1;
2943
2944 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2945
2089 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2946 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2090 { 2947 {
2091 /* remember old timestamp for io_blocktime calculation */
2092 ev_tstamp prev_mn_now = mn_now;
2093
2094 /* update time to cancel out callback processing overhead */
2095 time_update (EV_A_ 1e100);
2096
2097 waittime = MAX_BLOCKTIME; 2948 waittime = MAX_BLOCKTIME;
2098 2949
2099 if (timercnt) 2950 if (timercnt)
2100 { 2951 {
2101 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2952 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2102 if (waittime > to) waittime = to; 2953 if (waittime > to) waittime = to;
2103 } 2954 }
2104 2955
2105#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
2106 if (periodiccnt) 2957 if (periodiccnt)
2107 { 2958 {
2108 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2959 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2109 if (waittime > to) waittime = to; 2960 if (waittime > to) waittime = to;
2110 } 2961 }
2111#endif 2962#endif
2112 2963
2113 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2964 /* don't let timeouts decrease the waittime below timeout_blocktime */
2114 if (expect_false (waittime < timeout_blocktime)) 2965 if (expect_false (waittime < timeout_blocktime))
2115 waittime = timeout_blocktime; 2966 waittime = timeout_blocktime;
2967
2968 /* at this point, we NEED to wait, so we have to ensure */
2969 /* to pass a minimum nonzero value to the backend */
2970 if (expect_false (waittime < backend_mintime))
2971 waittime = backend_mintime;
2116 2972
2117 /* extra check because io_blocktime is commonly 0 */ 2973 /* extra check because io_blocktime is commonly 0 */
2118 if (expect_false (io_blocktime)) 2974 if (expect_false (io_blocktime))
2119 { 2975 {
2120 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2976 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2121 2977
2122 if (sleeptime > waittime - backend_fudge) 2978 if (sleeptime > waittime - backend_mintime)
2123 sleeptime = waittime - backend_fudge; 2979 sleeptime = waittime - backend_mintime;
2124 2980
2125 if (expect_true (sleeptime > 0.)) 2981 if (expect_true (sleeptime > 0.))
2126 { 2982 {
2127 ev_sleep (sleeptime); 2983 ev_sleep (sleeptime);
2128 waittime -= sleeptime; 2984 waittime -= sleeptime;
2129 } 2985 }
2130 } 2986 }
2131 } 2987 }
2132 2988
2989#if EV_FEATURE_API
2133 ++loop_count; 2990 ++loop_count;
2991#endif
2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2134 backend_poll (EV_A_ waittime); 2993 backend_poll (EV_A_ waittime);
2994 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2995
2996 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2997
2998 if (pipe_write_skipped)
2999 {
3000 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3001 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3002 }
3003
2135 3004
2136 /* update ev_rt_now, do magic */ 3005 /* update ev_rt_now, do magic */
2137 time_update (EV_A_ waittime + sleeptime); 3006 time_update (EV_A_ waittime + sleeptime);
2138 } 3007 }
2139 3008
… …
2146#if EV_IDLE_ENABLE 3015#if EV_IDLE_ENABLE
2147 /* queue idle watchers unless other events are pending */ 3016 /* queue idle watchers unless other events are pending */
2148 idle_reify (EV_A); 3017 idle_reify (EV_A);
2149#endif 3018#endif
2150 3019
3020#if EV_CHECK_ENABLE
2151 /* queue check watchers, to be executed first */ 3021 /* queue check watchers, to be executed first */
2152 if (expect_false (checkcnt)) 3022 if (expect_false (checkcnt))
2153 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3024#endif
2154 3025
2155 call_pending (EV_A); 3026 EV_INVOKE_PENDING;
2156 } 3027 }
2157 while (expect_true ( 3028 while (expect_true (
2158 activecnt 3029 activecnt
2159 && !loop_done 3030 && !loop_done
2160 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3031 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2161 )); 3032 ));
2162 3033
2163 if (loop_done == EVUNLOOP_ONE) 3034 if (loop_done == EVBREAK_ONE)
2164 loop_done = EVUNLOOP_CANCEL; 3035 loop_done = EVBREAK_CANCEL;
2165 3036
3037#if EV_FEATURE_API
2166 --loop_depth; 3038 --loop_depth;
3039#endif
2167} 3040}
2168 3041
2169void 3042void
2170ev_unloop (EV_P_ int how) 3043ev_break (EV_P_ int how)
2171{ 3044{
2172 loop_done = how; 3045 loop_done = how;
2173} 3046}
2174 3047
2175void 3048void
… …
2222inline_size void 3095inline_size void
2223wlist_del (WL *head, WL elem) 3096wlist_del (WL *head, WL elem)
2224{ 3097{
2225 while (*head) 3098 while (*head)
2226 { 3099 {
2227 if (*head == elem) 3100 if (expect_true (*head == elem))
2228 { 3101 {
2229 *head = elem->next; 3102 *head = elem->next;
2230 return; 3103 break;
2231 } 3104 }
2232 3105
2233 head = &(*head)->next; 3106 head = &(*head)->next;
2234 } 3107 }
2235} 3108}
… …
2295 3168
2296 if (expect_false (ev_is_active (w))) 3169 if (expect_false (ev_is_active (w)))
2297 return; 3170 return;
2298 3171
2299 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3172 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2300 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3173 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2301 3174
2302 EV_FREQUENT_CHECK; 3175 EV_FREQUENT_CHECK;
2303 3176
2304 ev_start (EV_A_ (W)w, 1); 3177 ev_start (EV_A_ (W)w, 1);
2305 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3178 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2306 wlist_add (&anfds[fd].head, (WL)w); 3179 wlist_add (&anfds[fd].head, (WL)w);
2307 3180
2308 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3181 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2309 w->events &= ~EV__IOFDSET; 3182 w->events &= ~EV__IOFDSET;
2310 3183
2311 EV_FREQUENT_CHECK; 3184 EV_FREQUENT_CHECK;
2312} 3185}
2313 3186
… …
2323 EV_FREQUENT_CHECK; 3196 EV_FREQUENT_CHECK;
2324 3197
2325 wlist_del (&anfds[w->fd].head, (WL)w); 3198 wlist_del (&anfds[w->fd].head, (WL)w);
2326 ev_stop (EV_A_ (W)w); 3199 ev_stop (EV_A_ (W)w);
2327 3200
2328 fd_change (EV_A_ w->fd, 1); 3201 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2329 3202
2330 EV_FREQUENT_CHECK; 3203 EV_FREQUENT_CHECK;
2331} 3204}
2332 3205
2333void noinline 3206void noinline
… …
2375 timers [active] = timers [timercnt + HEAP0]; 3248 timers [active] = timers [timercnt + HEAP0];
2376 adjustheap (timers, timercnt, active); 3249 adjustheap (timers, timercnt, active);
2377 } 3250 }
2378 } 3251 }
2379 3252
2380 EV_FREQUENT_CHECK;
2381
2382 ev_at (w) -= mn_now; 3253 ev_at (w) -= mn_now;
2383 3254
2384 ev_stop (EV_A_ (W)w); 3255 ev_stop (EV_A_ (W)w);
3256
3257 EV_FREQUENT_CHECK;
2385} 3258}
2386 3259
2387void noinline 3260void noinline
2388ev_timer_again (EV_P_ ev_timer *w) 3261ev_timer_again (EV_P_ ev_timer *w)
2389{ 3262{
… …
2407 } 3280 }
2408 3281
2409 EV_FREQUENT_CHECK; 3282 EV_FREQUENT_CHECK;
2410} 3283}
2411 3284
3285ev_tstamp
3286ev_timer_remaining (EV_P_ ev_timer *w)
3287{
3288 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3289}
3290
2412#if EV_PERIODIC_ENABLE 3291#if EV_PERIODIC_ENABLE
2413void noinline 3292void noinline
2414ev_periodic_start (EV_P_ ev_periodic *w) 3293ev_periodic_start (EV_P_ ev_periodic *w)
2415{ 3294{
2416 if (expect_false (ev_is_active (w))) 3295 if (expect_false (ev_is_active (w)))
… …
2419 if (w->reschedule_cb) 3298 if (w->reschedule_cb)
2420 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3299 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2421 else if (w->interval) 3300 else if (w->interval)
2422 { 3301 {
2423 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3302 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2424 /* this formula differs from the one in periodic_reify because we do not always round up */ 3303 periodic_recalc (EV_A_ w);
2425 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2426 } 3304 }
2427 else 3305 else
2428 ev_at (w) = w->offset; 3306 ev_at (w) = w->offset;
2429 3307
2430 EV_FREQUENT_CHECK; 3308 EV_FREQUENT_CHECK;
… …
2462 periodics [active] = periodics [periodiccnt + HEAP0]; 3340 periodics [active] = periodics [periodiccnt + HEAP0];
2463 adjustheap (periodics, periodiccnt, active); 3341 adjustheap (periodics, periodiccnt, active);
2464 } 3342 }
2465 } 3343 }
2466 3344
2467 EV_FREQUENT_CHECK;
2468
2469 ev_stop (EV_A_ (W)w); 3345 ev_stop (EV_A_ (W)w);
3346
3347 EV_FREQUENT_CHECK;
2470} 3348}
2471 3349
2472void noinline 3350void noinline
2473ev_periodic_again (EV_P_ ev_periodic *w) 3351ev_periodic_again (EV_P_ ev_periodic *w)
2474{ 3352{
… …
2480 3358
2481#ifndef SA_RESTART 3359#ifndef SA_RESTART
2482# define SA_RESTART 0 3360# define SA_RESTART 0
2483#endif 3361#endif
2484 3362
3363#if EV_SIGNAL_ENABLE
3364
2485void noinline 3365void noinline
2486ev_signal_start (EV_P_ ev_signal *w) 3366ev_signal_start (EV_P_ ev_signal *w)
2487{ 3367{
2488#if EV_MULTIPLICITY
2489 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2490#endif
2491 if (expect_false (ev_is_active (w))) 3368 if (expect_false (ev_is_active (w)))
2492 return; 3369 return;
2493 3370
2494 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3371 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2495 3372
2496 evpipe_init (EV_A); 3373#if EV_MULTIPLICITY
3374 assert (("libev: a signal must not be attached to two different loops",
3375 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2497 3376
2498 EV_FREQUENT_CHECK; 3377 signals [w->signum - 1].loop = EV_A;
3378#endif
2499 3379
3380 EV_FREQUENT_CHECK;
3381
3382#if EV_USE_SIGNALFD
3383 if (sigfd == -2)
2500 { 3384 {
2501#ifndef _WIN32 3385 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2502 sigset_t full, prev; 3386 if (sigfd < 0 && errno == EINVAL)
2503 sigfillset (&full); 3387 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2504 sigprocmask (SIG_SETMASK, &full, &prev);
2505#endif
2506 3388
2507 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3389 if (sigfd >= 0)
3390 {
3391 fd_intern (sigfd); /* doing it twice will not hurt */
2508 3392
2509#ifndef _WIN32 3393 sigemptyset (&sigfd_set);
2510 sigprocmask (SIG_SETMASK, &prev, 0); 3394
2511#endif 3395 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3396 ev_set_priority (&sigfd_w, EV_MAXPRI);
3397 ev_io_start (EV_A_ &sigfd_w);
3398 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3399 }
2512 } 3400 }
3401
3402 if (sigfd >= 0)
3403 {
3404 /* TODO: check .head */
3405 sigaddset (&sigfd_set, w->signum);
3406 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3407
3408 signalfd (sigfd, &sigfd_set, 0);
3409 }
3410#endif
2513 3411
2514 ev_start (EV_A_ (W)w, 1); 3412 ev_start (EV_A_ (W)w, 1);
2515 wlist_add (&signals [w->signum - 1].head, (WL)w); 3413 wlist_add (&signals [w->signum - 1].head, (WL)w);
2516 3414
2517 if (!((WL)w)->next) 3415 if (!((WL)w)->next)
3416# if EV_USE_SIGNALFD
3417 if (sigfd < 0) /*TODO*/
3418# endif
2518 { 3419 {
2519#if _WIN32 3420# ifdef _WIN32
3421 evpipe_init (EV_A);
3422
2520 signal (w->signum, ev_sighandler); 3423 signal (w->signum, ev_sighandler);
2521#else 3424# else
2522 struct sigaction sa; 3425 struct sigaction sa;
3426
3427 evpipe_init (EV_A);
3428
2523 sa.sa_handler = ev_sighandler; 3429 sa.sa_handler = ev_sighandler;
2524 sigfillset (&sa.sa_mask); 3430 sigfillset (&sa.sa_mask);
2525 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3431 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2526 sigaction (w->signum, &sa, 0); 3432 sigaction (w->signum, &sa, 0);
3433
3434 if (origflags & EVFLAG_NOSIGMASK)
3435 {
3436 sigemptyset (&sa.sa_mask);
3437 sigaddset (&sa.sa_mask, w->signum);
3438 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3439 }
2527#endif 3440#endif
2528 } 3441 }
2529 3442
2530 EV_FREQUENT_CHECK; 3443 EV_FREQUENT_CHECK;
2531} 3444}
2532 3445
2533void noinline 3446void noinline
… …
2541 3454
2542 wlist_del (&signals [w->signum - 1].head, (WL)w); 3455 wlist_del (&signals [w->signum - 1].head, (WL)w);
2543 ev_stop (EV_A_ (W)w); 3456 ev_stop (EV_A_ (W)w);
2544 3457
2545 if (!signals [w->signum - 1].head) 3458 if (!signals [w->signum - 1].head)
3459 {
3460#if EV_MULTIPLICITY
3461 signals [w->signum - 1].loop = 0; /* unattach from signal */
3462#endif
3463#if EV_USE_SIGNALFD
3464 if (sigfd >= 0)
3465 {
3466 sigset_t ss;
3467
3468 sigemptyset (&ss);
3469 sigaddset (&ss, w->signum);
3470 sigdelset (&sigfd_set, w->signum);
3471
3472 signalfd (sigfd, &sigfd_set, 0);
3473 sigprocmask (SIG_UNBLOCK, &ss, 0);
3474 }
3475 else
3476#endif
2546 signal (w->signum, SIG_DFL); 3477 signal (w->signum, SIG_DFL);
3478 }
2547 3479
2548 EV_FREQUENT_CHECK; 3480 EV_FREQUENT_CHECK;
2549} 3481}
3482
3483#endif
3484
3485#if EV_CHILD_ENABLE
2550 3486
2551void 3487void
2552ev_child_start (EV_P_ ev_child *w) 3488ev_child_start (EV_P_ ev_child *w)
2553{ 3489{
2554#if EV_MULTIPLICITY 3490#if EV_MULTIPLICITY
… …
2558 return; 3494 return;
2559 3495
2560 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
2561 3497
2562 ev_start (EV_A_ (W)w, 1); 3498 ev_start (EV_A_ (W)w, 1);
2563 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3499 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2564 3500
2565 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2566} 3502}
2567 3503
2568void 3504void
… …
2572 if (expect_false (!ev_is_active (w))) 3508 if (expect_false (!ev_is_active (w)))
2573 return; 3509 return;
2574 3510
2575 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2576 3512
2577 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3513 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2578 ev_stop (EV_A_ (W)w); 3514 ev_stop (EV_A_ (W)w);
2579 3515
2580 EV_FREQUENT_CHECK; 3516 EV_FREQUENT_CHECK;
2581} 3517}
3518
3519#endif
2582 3520
2583#if EV_STAT_ENABLE 3521#if EV_STAT_ENABLE
2584 3522
2585# ifdef _WIN32 3523# ifdef _WIN32
2586# undef lstat 3524# undef lstat
… …
2592#define MIN_STAT_INTERVAL 0.1074891 3530#define MIN_STAT_INTERVAL 0.1074891
2593 3531
2594static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3532static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2595 3533
2596#if EV_USE_INOTIFY 3534#if EV_USE_INOTIFY
2597# define EV_INOTIFY_BUFSIZE 8192 3535
3536/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3537# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2598 3538
2599static void noinline 3539static void noinline
2600infy_add (EV_P_ ev_stat *w) 3540infy_add (EV_P_ ev_stat *w)
2601{ 3541{
2602 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); 3542 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);
2603 3543
2604 if (w->wd < 0) 3544 if (w->wd >= 0)
3545 {
3546 struct statfs sfs;
3547
3548 /* now local changes will be tracked by inotify, but remote changes won't */
3549 /* unless the filesystem is known to be local, we therefore still poll */
3550 /* also do poll on <2.6.25, but with normal frequency */
3551
3552 if (!fs_2625)
3553 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3554 else if (!statfs (w->path, &sfs)
3555 && (sfs.f_type == 0x1373 /* devfs */
3556 || sfs.f_type == 0xEF53 /* ext2/3 */
3557 || sfs.f_type == 0x3153464a /* jfs */
3558 || sfs.f_type == 0x52654973 /* reiser3 */
3559 || sfs.f_type == 0x01021994 /* tempfs */
3560 || sfs.f_type == 0x58465342 /* xfs */))
3561 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3562 else
3563 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2605 { 3564 }
3565 else
3566 {
3567 /* can't use inotify, continue to stat */
2606 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3568 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2607 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2608 3569
2609 /* monitor some parent directory for speedup hints */ 3570 /* if path is not there, monitor some parent directory for speedup hints */
2610 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3571 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2611 /* but an efficiency issue only */ 3572 /* but an efficiency issue only */
2612 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3573 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2613 { 3574 {
2614 char path [4096]; 3575 char path [4096];
… …
2624 if (!pend || pend == path) 3585 if (!pend || pend == path)
2625 break; 3586 break;
2626 3587
2627 *pend = 0; 3588 *pend = 0;
2628 w->wd = inotify_add_watch (fs_fd, path, mask); 3589 w->wd = inotify_add_watch (fs_fd, path, mask);
2629 } 3590 }
2630 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3591 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2631 } 3592 }
2632 } 3593 }
2633 3594
2634 if (w->wd >= 0) 3595 if (w->wd >= 0)
2635 {
2636 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3596 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2637 3597
2638 /* now local changes will be tracked by inotify, but remote changes won't */ 3598 /* now re-arm timer, if required */
2639 /* unless the filesystem it known to be local, we therefore still poll */ 3599 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2640 /* also do poll on <2.6.25, but with normal frequency */
2641 struct statfs sfs;
2642
2643 if (fs_2625 && !statfs (w->path, &sfs))
2644 if (sfs.f_type == 0x1373 /* devfs */
2645 || sfs.f_type == 0xEF53 /* ext2/3 */
2646 || sfs.f_type == 0x3153464a /* jfs */
2647 || sfs.f_type == 0x52654973 /* reiser3 */
2648 || sfs.f_type == 0x01021994 /* tempfs */
2649 || sfs.f_type == 0x58465342 /* xfs */)
2650 return;
2651
2652 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2653 ev_timer_again (EV_A_ &w->timer); 3600 ev_timer_again (EV_A_ &w->timer);
2654 } 3601 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2655} 3602}
2656 3603
2657static void noinline 3604static void noinline
2658infy_del (EV_P_ ev_stat *w) 3605infy_del (EV_P_ ev_stat *w)
2659{ 3606{
… …
2662 3609
2663 if (wd < 0) 3610 if (wd < 0)
2664 return; 3611 return;
2665 3612
2666 w->wd = -2; 3613 w->wd = -2;
2667 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3614 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2668 wlist_del (&fs_hash [slot].head, (WL)w); 3615 wlist_del (&fs_hash [slot].head, (WL)w);
2669 3616
2670 /* remove this watcher, if others are watching it, they will rearm */ 3617 /* remove this watcher, if others are watching it, they will rearm */
2671 inotify_rm_watch (fs_fd, wd); 3618 inotify_rm_watch (fs_fd, wd);
2672} 3619}
… …
2674static void noinline 3621static void noinline
2675infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3622infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2676{ 3623{
2677 if (slot < 0) 3624 if (slot < 0)
2678 /* overflow, need to check for all hash slots */ 3625 /* overflow, need to check for all hash slots */
2679 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3626 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2680 infy_wd (EV_A_ slot, wd, ev); 3627 infy_wd (EV_A_ slot, wd, ev);
2681 else 3628 else
2682 { 3629 {
2683 WL w_; 3630 WL w_;
2684 3631
2685 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3632 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2686 { 3633 {
2687 ev_stat *w = (ev_stat *)w_; 3634 ev_stat *w = (ev_stat *)w_;
2688 w_ = w_->next; /* lets us remove this watcher and all before it */ 3635 w_ = w_->next; /* lets us remove this watcher and all before it */
2689 3636
2690 if (w->wd == wd || wd == -1) 3637 if (w->wd == wd || wd == -1)
2691 { 3638 {
2692 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3639 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2693 { 3640 {
2694 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3641 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2695 w->wd = -1; 3642 w->wd = -1;
2696 infy_add (EV_A_ w); /* re-add, no matter what */ 3643 infy_add (EV_A_ w); /* re-add, no matter what */
2697 } 3644 }
2698 3645
2699 stat_timer_cb (EV_A_ &w->timer, 0); 3646 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2704 3651
2705static void 3652static void
2706infy_cb (EV_P_ ev_io *w, int revents) 3653infy_cb (EV_P_ ev_io *w, int revents)
2707{ 3654{
2708 char buf [EV_INOTIFY_BUFSIZE]; 3655 char buf [EV_INOTIFY_BUFSIZE];
2709 struct inotify_event *ev = (struct inotify_event *)buf;
2710 int ofs; 3656 int ofs;
2711 int len = read (fs_fd, buf, sizeof (buf)); 3657 int len = read (fs_fd, buf, sizeof (buf));
2712 3658
2713 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3659 for (ofs = 0; ofs < len; )
3660 {
3661 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2714 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3662 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3663 ofs += sizeof (struct inotify_event) + ev->len;
3664 }
2715} 3665}
2716 3666
2717inline_size void 3667inline_size void ecb_cold
2718check_2625 (EV_P) 3668ev_check_2625 (EV_P)
2719{ 3669{
2720 /* kernels < 2.6.25 are borked 3670 /* kernels < 2.6.25 are borked
2721 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3671 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2722 */ 3672 */
2723 struct utsname buf; 3673 if (ev_linux_version () < 0x020619)
2724 int major, minor, micro;
2725
2726 if (uname (&buf))
2727 return; 3674 return;
2728 3675
2729 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2730 return;
2731
2732 if (major < 2
2733 || (major == 2 && minor < 6)
2734 || (major == 2 && minor == 6 && micro < 25))
2735 return;
2736
2737 fs_2625 = 1; 3676 fs_2625 = 1;
3677}
3678
3679inline_size int
3680infy_newfd (void)
3681{
3682#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3683 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3684 if (fd >= 0)
3685 return fd;
3686#endif
3687 return inotify_init ();
2738} 3688}
2739 3689
2740inline_size void 3690inline_size void
2741infy_init (EV_P) 3691infy_init (EV_P)
2742{ 3692{
2743 if (fs_fd != -2) 3693 if (fs_fd != -2)
2744 return; 3694 return;
2745 3695
2746 fs_fd = -1; 3696 fs_fd = -1;
2747 3697
2748 check_2625 (EV_A); 3698 ev_check_2625 (EV_A);
2749 3699
2750 fs_fd = inotify_init (); 3700 fs_fd = infy_newfd ();
2751 3701
2752 if (fs_fd >= 0) 3702 if (fs_fd >= 0)
2753 { 3703 {
3704 fd_intern (fs_fd);
2754 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3705 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2755 ev_set_priority (&fs_w, EV_MAXPRI); 3706 ev_set_priority (&fs_w, EV_MAXPRI);
2756 ev_io_start (EV_A_ &fs_w); 3707 ev_io_start (EV_A_ &fs_w);
3708 ev_unref (EV_A);
2757 } 3709 }
2758} 3710}
2759 3711
2760inline_size void 3712inline_size void
2761infy_fork (EV_P) 3713infy_fork (EV_P)
… …
2763 int slot; 3715 int slot;
2764 3716
2765 if (fs_fd < 0) 3717 if (fs_fd < 0)
2766 return; 3718 return;
2767 3719
3720 ev_ref (EV_A);
3721 ev_io_stop (EV_A_ &fs_w);
2768 close (fs_fd); 3722 close (fs_fd);
2769 fs_fd = inotify_init (); 3723 fs_fd = infy_newfd ();
2770 3724
3725 if (fs_fd >= 0)
3726 {
3727 fd_intern (fs_fd);
3728 ev_io_set (&fs_w, fs_fd, EV_READ);
3729 ev_io_start (EV_A_ &fs_w);
3730 ev_unref (EV_A);
3731 }
3732
2771 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3733 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2772 { 3734 {
2773 WL w_ = fs_hash [slot].head; 3735 WL w_ = fs_hash [slot].head;
2774 fs_hash [slot].head = 0; 3736 fs_hash [slot].head = 0;
2775 3737
2776 while (w_) 3738 while (w_)
… …
2781 w->wd = -1; 3743 w->wd = -1;
2782 3744
2783 if (fs_fd >= 0) 3745 if (fs_fd >= 0)
2784 infy_add (EV_A_ w); /* re-add, no matter what */ 3746 infy_add (EV_A_ w); /* re-add, no matter what */
2785 else 3747 else
3748 {
3749 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3750 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2786 ev_timer_again (EV_A_ &w->timer); 3751 ev_timer_again (EV_A_ &w->timer);
3752 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3753 }
2787 } 3754 }
2788 } 3755 }
2789} 3756}
2790 3757
2791#endif 3758#endif
… …
2808static void noinline 3775static void noinline
2809stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3776stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2810{ 3777{
2811 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2812 3779
2813 /* we copy this here each the time so that */ 3780 ev_statdata prev = w->attr;
2814 /* prev has the old value when the callback gets invoked */
2815 w->prev = w->attr;
2816 ev_stat_stat (EV_A_ w); 3781 ev_stat_stat (EV_A_ w);
2817 3782
2818 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3783 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2819 if ( 3784 if (
2820 w->prev.st_dev != w->attr.st_dev 3785 prev.st_dev != w->attr.st_dev
2821 || w->prev.st_ino != w->attr.st_ino 3786 || prev.st_ino != w->attr.st_ino
2822 || w->prev.st_mode != w->attr.st_mode 3787 || prev.st_mode != w->attr.st_mode
2823 || w->prev.st_nlink != w->attr.st_nlink 3788 || prev.st_nlink != w->attr.st_nlink
2824 || w->prev.st_uid != w->attr.st_uid 3789 || prev.st_uid != w->attr.st_uid
2825 || w->prev.st_gid != w->attr.st_gid 3790 || prev.st_gid != w->attr.st_gid
2826 || w->prev.st_rdev != w->attr.st_rdev 3791 || prev.st_rdev != w->attr.st_rdev
2827 || w->prev.st_size != w->attr.st_size 3792 || prev.st_size != w->attr.st_size
2828 || w->prev.st_atime != w->attr.st_atime 3793 || prev.st_atime != w->attr.st_atime
2829 || w->prev.st_mtime != w->attr.st_mtime 3794 || prev.st_mtime != w->attr.st_mtime
2830 || w->prev.st_ctime != w->attr.st_ctime 3795 || prev.st_ctime != w->attr.st_ctime
2831 ) { 3796 ) {
3797 /* we only update w->prev on actual differences */
3798 /* in case we test more often than invoke the callback, */
3799 /* to ensure that prev is always different to attr */
3800 w->prev = prev;
3801
2832 #if EV_USE_INOTIFY 3802 #if EV_USE_INOTIFY
2833 if (fs_fd >= 0) 3803 if (fs_fd >= 0)
2834 { 3804 {
2835 infy_del (EV_A_ w); 3805 infy_del (EV_A_ w);
2836 infy_add (EV_A_ w); 3806 infy_add (EV_A_ w);
… …
2861 3831
2862 if (fs_fd >= 0) 3832 if (fs_fd >= 0)
2863 infy_add (EV_A_ w); 3833 infy_add (EV_A_ w);
2864 else 3834 else
2865#endif 3835#endif
3836 {
2866 ev_timer_again (EV_A_ &w->timer); 3837 ev_timer_again (EV_A_ &w->timer);
3838 ev_unref (EV_A);
3839 }
2867 3840
2868 ev_start (EV_A_ (W)w, 1); 3841 ev_start (EV_A_ (W)w, 1);
2869 3842
2870 EV_FREQUENT_CHECK; 3843 EV_FREQUENT_CHECK;
2871} 3844}
… …
2880 EV_FREQUENT_CHECK; 3853 EV_FREQUENT_CHECK;
2881 3854
2882#if EV_USE_INOTIFY 3855#if EV_USE_INOTIFY
2883 infy_del (EV_A_ w); 3856 infy_del (EV_A_ w);
2884#endif 3857#endif
3858
3859 if (ev_is_active (&w->timer))
3860 {
3861 ev_ref (EV_A);
2885 ev_timer_stop (EV_A_ &w->timer); 3862 ev_timer_stop (EV_A_ &w->timer);
3863 }
2886 3864
2887 ev_stop (EV_A_ (W)w); 3865 ev_stop (EV_A_ (W)w);
2888 3866
2889 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2890} 3868}
… …
2935 3913
2936 EV_FREQUENT_CHECK; 3914 EV_FREQUENT_CHECK;
2937} 3915}
2938#endif 3916#endif
2939 3917
3918#if EV_PREPARE_ENABLE
2940void 3919void
2941ev_prepare_start (EV_P_ ev_prepare *w) 3920ev_prepare_start (EV_P_ ev_prepare *w)
2942{ 3921{
2943 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
2944 return; 3923 return;
… …
2970 3949
2971 ev_stop (EV_A_ (W)w); 3950 ev_stop (EV_A_ (W)w);
2972 3951
2973 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
2974} 3953}
3954#endif
2975 3955
3956#if EV_CHECK_ENABLE
2976void 3957void
2977ev_check_start (EV_P_ ev_check *w) 3958ev_check_start (EV_P_ ev_check *w)
2978{ 3959{
2979 if (expect_false (ev_is_active (w))) 3960 if (expect_false (ev_is_active (w)))
2980 return; 3961 return;
… …
3006 3987
3007 ev_stop (EV_A_ (W)w); 3988 ev_stop (EV_A_ (W)w);
3008 3989
3009 EV_FREQUENT_CHECK; 3990 EV_FREQUENT_CHECK;
3010} 3991}
3992#endif
3011 3993
3012#if EV_EMBED_ENABLE 3994#if EV_EMBED_ENABLE
3013void noinline 3995void noinline
3014ev_embed_sweep (EV_P_ ev_embed *w) 3996ev_embed_sweep (EV_P_ ev_embed *w)
3015{ 3997{
3016 ev_loop (w->other, EVLOOP_NONBLOCK); 3998 ev_run (w->other, EVRUN_NOWAIT);
3017} 3999}
3018 4000
3019static void 4001static void
3020embed_io_cb (EV_P_ ev_io *io, int revents) 4002embed_io_cb (EV_P_ ev_io *io, int revents)
3021{ 4003{
3022 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4004 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3023 4005
3024 if (ev_cb (w)) 4006 if (ev_cb (w))
3025 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4007 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3026 else 4008 else
3027 ev_loop (w->other, EVLOOP_NONBLOCK); 4009 ev_run (w->other, EVRUN_NOWAIT);
3028} 4010}
3029 4011
3030static void 4012static void
3031embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4013embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3032{ 4014{
3033 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4015 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3034 4016
3035 { 4017 {
3036 struct ev_loop *loop = w->other; 4018 EV_P = w->other;
3037 4019
3038 while (fdchangecnt) 4020 while (fdchangecnt)
3039 { 4021 {
3040 fd_reify (EV_A); 4022 fd_reify (EV_A);
3041 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4023 ev_run (EV_A_ EVRUN_NOWAIT);
3042 } 4024 }
3043 } 4025 }
3044} 4026}
3045 4027
3046static void 4028static void
… …
3049 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4031 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3050 4032
3051 ev_embed_stop (EV_A_ w); 4033 ev_embed_stop (EV_A_ w);
3052 4034
3053 { 4035 {
3054 struct ev_loop *loop = w->other; 4036 EV_P = w->other;
3055 4037
3056 ev_loop_fork (EV_A); 4038 ev_loop_fork (EV_A);
3057 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4039 ev_run (EV_A_ EVRUN_NOWAIT);
3058 } 4040 }
3059 4041
3060 ev_embed_start (EV_A_ w); 4042 ev_embed_start (EV_A_ w);
3061} 4043}
3062 4044
… …
3073{ 4055{
3074 if (expect_false (ev_is_active (w))) 4056 if (expect_false (ev_is_active (w)))
3075 return; 4057 return;
3076 4058
3077 { 4059 {
3078 struct ev_loop *loop = w->other; 4060 EV_P = w->other;
3079 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4061 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3080 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4062 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3081 } 4063 }
3082 4064
3083 EV_FREQUENT_CHECK; 4065 EV_FREQUENT_CHECK;
… …
3110 4092
3111 ev_io_stop (EV_A_ &w->io); 4093 ev_io_stop (EV_A_ &w->io);
3112 ev_prepare_stop (EV_A_ &w->prepare); 4094 ev_prepare_stop (EV_A_ &w->prepare);
3113 ev_fork_stop (EV_A_ &w->fork); 4095 ev_fork_stop (EV_A_ &w->fork);
3114 4096
4097 ev_stop (EV_A_ (W)w);
4098
3115 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
3116} 4100}
3117#endif 4101#endif
3118 4102
3119#if EV_FORK_ENABLE 4103#if EV_FORK_ENABLE
… …
3152 4136
3153 EV_FREQUENT_CHECK; 4137 EV_FREQUENT_CHECK;
3154} 4138}
3155#endif 4139#endif
3156 4140
4141#if EV_CLEANUP_ENABLE
4142void
4143ev_cleanup_start (EV_P_ ev_cleanup *w)
4144{
4145 if (expect_false (ev_is_active (w)))
4146 return;
4147
4148 EV_FREQUENT_CHECK;
4149
4150 ev_start (EV_A_ (W)w, ++cleanupcnt);
4151 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4152 cleanups [cleanupcnt - 1] = w;
4153
4154 /* cleanup watchers should never keep a refcount on the loop */
4155 ev_unref (EV_A);
4156 EV_FREQUENT_CHECK;
4157}
4158
4159void
4160ev_cleanup_stop (EV_P_ ev_cleanup *w)
4161{
4162 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w)))
4164 return;
4165
4166 EV_FREQUENT_CHECK;
4167 ev_ref (EV_A);
4168
4169 {
4170 int active = ev_active (w);
4171
4172 cleanups [active - 1] = cleanups [--cleanupcnt];
4173 ev_active (cleanups [active - 1]) = active;
4174 }
4175
4176 ev_stop (EV_A_ (W)w);
4177
4178 EV_FREQUENT_CHECK;
4179}
4180#endif
4181
3157#if EV_ASYNC_ENABLE 4182#if EV_ASYNC_ENABLE
3158void 4183void
3159ev_async_start (EV_P_ ev_async *w) 4184ev_async_start (EV_P_ ev_async *w)
3160{ 4185{
3161 if (expect_false (ev_is_active (w))) 4186 if (expect_false (ev_is_active (w)))
3162 return; 4187 return;
3163 4188
4189 w->sent = 0;
4190
3164 evpipe_init (EV_A); 4191 evpipe_init (EV_A);
3165 4192
3166 EV_FREQUENT_CHECK; 4193 EV_FREQUENT_CHECK;
3167 4194
3168 ev_start (EV_A_ (W)w, ++asynccnt); 4195 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3195 4222
3196void 4223void
3197ev_async_send (EV_P_ ev_async *w) 4224ev_async_send (EV_P_ ev_async *w)
3198{ 4225{
3199 w->sent = 1; 4226 w->sent = 1;
3200 evpipe_write (EV_A_ &gotasync); 4227 evpipe_write (EV_A_ &async_pending);
3201} 4228}
3202#endif 4229#endif
3203 4230
3204/*****************************************************************************/ 4231/*****************************************************************************/
3205 4232
… …
3245{ 4272{
3246 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4273 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3247 4274
3248 if (expect_false (!once)) 4275 if (expect_false (!once))
3249 { 4276 {
3250 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3251 return; 4278 return;
3252 } 4279 }
3253 4280
3254 once->cb = cb; 4281 once->cb = cb;
3255 once->arg = arg; 4282 once->arg = arg;
… …
3270} 4297}
3271 4298
3272/*****************************************************************************/ 4299/*****************************************************************************/
3273 4300
3274#if EV_WALK_ENABLE 4301#if EV_WALK_ENABLE
3275void 4302void ecb_cold
3276ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4303ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3277{ 4304{
3278 int i, j; 4305 int i, j;
3279 ev_watcher_list *wl, *wn; 4306 ev_watcher_list *wl, *wn;
3280 4307
… …
3324 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4351 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3325#endif 4352#endif
3326 4353
3327#if EV_IDLE_ENABLE 4354#if EV_IDLE_ENABLE
3328 if (types & EV_IDLE) 4355 if (types & EV_IDLE)
3329 for (j = NUMPRI; i--; ) 4356 for (j = NUMPRI; j--; )
3330 for (i = idlecnt [j]; i--; ) 4357 for (i = idlecnt [j]; i--; )
3331 cb (EV_A_ EV_IDLE, idles [j][i]); 4358 cb (EV_A_ EV_IDLE, idles [j][i]);
3332#endif 4359#endif
3333 4360
3334#if EV_FORK_ENABLE 4361#if EV_FORK_ENABLE
… …
3342 if (types & EV_ASYNC) 4369 if (types & EV_ASYNC)
3343 for (i = asynccnt; i--; ) 4370 for (i = asynccnt; i--; )
3344 cb (EV_A_ EV_ASYNC, asyncs [i]); 4371 cb (EV_A_ EV_ASYNC, asyncs [i]);
3345#endif 4372#endif
3346 4373
4374#if EV_PREPARE_ENABLE
3347 if (types & EV_PREPARE) 4375 if (types & EV_PREPARE)
3348 for (i = preparecnt; i--; ) 4376 for (i = preparecnt; i--; )
3349#if EV_EMBED_ENABLE 4377# if EV_EMBED_ENABLE
3350 if (ev_cb (prepares [i]) != embed_prepare_cb) 4378 if (ev_cb (prepares [i]) != embed_prepare_cb)
3351#endif 4379# endif
3352 cb (EV_A_ EV_PREPARE, prepares [i]); 4380 cb (EV_A_ EV_PREPARE, prepares [i]);
4381#endif
3353 4382
4383#if EV_CHECK_ENABLE
3354 if (types & EV_CHECK) 4384 if (types & EV_CHECK)
3355 for (i = checkcnt; i--; ) 4385 for (i = checkcnt; i--; )
3356 cb (EV_A_ EV_CHECK, checks [i]); 4386 cb (EV_A_ EV_CHECK, checks [i]);
4387#endif
3357 4388
4389#if EV_SIGNAL_ENABLE
3358 if (types & EV_SIGNAL) 4390 if (types & EV_SIGNAL)
3359 for (i = 0; i < signalmax; ++i) 4391 for (i = 0; i < EV_NSIG - 1; ++i)
3360 for (wl = signals [i].head; wl; ) 4392 for (wl = signals [i].head; wl; )
3361 { 4393 {
3362 wn = wl->next; 4394 wn = wl->next;
3363 cb (EV_A_ EV_SIGNAL, wl); 4395 cb (EV_A_ EV_SIGNAL, wl);
3364 wl = wn; 4396 wl = wn;
3365 } 4397 }
4398#endif
3366 4399
4400#if EV_CHILD_ENABLE
3367 if (types & EV_CHILD) 4401 if (types & EV_CHILD)
3368 for (i = EV_PID_HASHSIZE; i--; ) 4402 for (i = (EV_PID_HASHSIZE); i--; )
3369 for (wl = childs [i]; wl; ) 4403 for (wl = childs [i]; wl; )
3370 { 4404 {
3371 wn = wl->next; 4405 wn = wl->next;
3372 cb (EV_A_ EV_CHILD, wl); 4406 cb (EV_A_ EV_CHILD, wl);
3373 wl = wn; 4407 wl = wn;
3374 } 4408 }
4409#endif
3375/* EV_STAT 0x00001000 /* stat data changed */ 4410/* EV_STAT 0x00001000 /* stat data changed */
3376/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4411/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3377} 4412}
3378#endif 4413#endif
3379 4414
3380#if EV_MULTIPLICITY 4415#if EV_MULTIPLICITY
3381 #include "ev_wrap.h" 4416 #include "ev_wrap.h"
3382#endif 4417#endif
3383 4418
3384#ifdef __cplusplus
3385}
3386#endif
3387

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