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Comparing libev/ev.c (file contents):
Revision 1.298 by root, Fri Jul 10 19:10:19 2009 UTC vs.
Revision 1.401 by root, Tue Dec 20 04:08:35 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}
… …
504 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 */
505 unsigned char unused; 1138 unsigned char unused;
506#if EV_USE_EPOLL 1139#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1140 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1141#endif
509#if EV_SELECT_IS_WINSOCKET 1142#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1143 SOCKET handle;
1144#endif
1145#if EV_USE_IOCP
1146 OVERLAPPED or, ow;
511#endif 1147#endif
512} ANFD; 1148} ANFD;
513 1149
514/* stores the pending event set for a given watcher */ 1150/* stores the pending event set for a given watcher */
515typedef struct 1151typedef struct
… …
557 #undef VAR 1193 #undef VAR
558 }; 1194 };
559 #include "ev_wrap.h" 1195 #include "ev_wrap.h"
560 1196
561 static struct ev_loop default_loop_struct; 1197 static struct ev_loop default_loop_struct;
562 struct ev_loop *ev_default_loop_ptr; 1198 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a defintiino despite extern */
563 1199
564#else 1200#else
565 1201
566 ev_tstamp ev_rt_now; 1202 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a defintiino despite extern */
567 #define VAR(name,decl) static decl; 1203 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1204 #include "ev_vars.h"
569 #undef VAR 1205 #undef VAR
570 1206
571 static int ev_default_loop_ptr; 1207 static int ev_default_loop_ptr;
572 1208
573#endif 1209#endif
574 1210
575#if EV_MINIMAL < 2 1211#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1212# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1213# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 1214# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 1215#else
580# define EV_RELEASE_CB (void)0 1216# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 1217# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1218# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 1219#endif
584 1220
585#define EVUNLOOP_RECURSE 0x80 1221#define EVBREAK_RECURSE 0x80
586 1222
587/*****************************************************************************/ 1223/*****************************************************************************/
588 1224
589#ifndef EV_HAVE_EV_TIME 1225#ifndef EV_HAVE_EV_TIME
590ev_tstamp 1226ev_tstamp
… …
634 if (delay > 0.) 1270 if (delay > 0.)
635 { 1271 {
636#if EV_USE_NANOSLEEP 1272#if EV_USE_NANOSLEEP
637 struct timespec ts; 1273 struct timespec ts;
638 1274
639 ts.tv_sec = (time_t)delay; 1275 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 1276 nanosleep (&ts, 0);
643#elif defined(_WIN32) 1277#elif defined(_WIN32)
644 Sleep ((unsigned long)(delay * 1e3)); 1278 Sleep ((unsigned long)(delay * 1e3));
645#else 1279#else
646 struct timeval tv; 1280 struct timeval tv;
647 1281
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650
651 /* 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 */
652 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1283 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 1284 /* by older ones */
1285 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 1286 select (0, 0, 0, 0, &tv);
655#endif 1287#endif
656 } 1288 }
657} 1289}
658 1290
659/*****************************************************************************/ 1291/*****************************************************************************/
660 1292
661#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 */
662 1294
663/* find a suitable new size for the given array, */ 1295/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 1296/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 1297inline_size int
666array_nextsize (int elem, int cur, int cnt) 1298array_nextsize (int elem, int cur, int cnt)
667{ 1299{
668 int ncur = cur + 1; 1300 int ncur = cur + 1;
669 1301
670 do 1302 do
671 ncur <<= 1; 1303 ncur <<= 1;
672 while (cnt > ncur); 1304 while (cnt > ncur);
673 1305
674 /* 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 */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1307 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 1308 {
677 ncur *= elem; 1309 ncur *= elem;
678 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);
679 ncur = ncur - sizeof (void *) * 4; 1311 ncur = ncur - sizeof (void *) * 4;
… …
681 } 1313 }
682 1314
683 return ncur; 1315 return ncur;
684} 1316}
685 1317
686static noinline void * 1318static void * noinline ecb_cold
687array_realloc (int elem, void *base, int *cur, int cnt) 1319array_realloc (int elem, void *base, int *cur, int cnt)
688{ 1320{
689 *cur = array_nextsize (elem, *cur, cnt); 1321 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 1322 return ev_realloc (base, elem * *cur);
691} 1323}
… …
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1326 memset ((void *)(base), 0, sizeof (*(base)) * (count))
695 1327
696#define array_needsize(type,base,cur,cnt,init) \ 1328#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 1329 if (expect_false ((cnt) > (cur))) \
698 { \ 1330 { \
699 int ocur_ = (cur); \ 1331 int ecb_unused ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 1332 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 1333 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 1334 init ((base) + (ocur_), (cur) - ocur_); \
703 } 1335 }
704 1336
… …
765} 1397}
766 1398
767/*****************************************************************************/ 1399/*****************************************************************************/
768 1400
769inline_speed void 1401inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 1402fd_event_nocheck (EV_P_ int fd, int revents)
771{ 1403{
772 ANFD *anfd = anfds + fd; 1404 ANFD *anfd = anfds + fd;
773 ev_io *w; 1405 ev_io *w;
774 1406
775 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)
… …
787fd_event (EV_P_ int fd, int revents) 1419fd_event (EV_P_ int fd, int revents)
788{ 1420{
789 ANFD *anfd = anfds + fd; 1421 ANFD *anfd = anfds + fd;
790 1422
791 if (expect_true (!anfd->reify)) 1423 if (expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 1424 fd_event_nocheck (EV_A_ fd, revents);
793} 1425}
794 1426
795void 1427void
796ev_feed_fd_event (EV_P_ int fd, int revents) 1428ev_feed_fd_event (EV_P_ int fd, int revents)
797{ 1429{
798 if (fd >= 0 && fd < anfdmax) 1430 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 1431 fd_event_nocheck (EV_A_ fd, revents);
800} 1432}
801 1433
802/* make sure the external fd watch events are in-sync */ 1434/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 1435/* with the kernel/libev internal state */
804inline_size void 1436inline_size void
805fd_reify (EV_P) 1437fd_reify (EV_P)
806{ 1438{
807 int i; 1439 int i;
808 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
809 for (i = 0; i < fdchangecnt; ++i) 1466 for (i = 0; i < fdchangecnt; ++i)
810 { 1467 {
811 int fd = fdchanges [i]; 1468 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 1469 ANFD *anfd = anfds + fd;
813 ev_io *w; 1470 ev_io *w;
814 1471
815 unsigned char events = 0; 1472 unsigned char o_events = anfd->events;
1473 unsigned char o_reify = anfd->reify;
816 1474
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1475 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 1476
820#if EV_SELECT_IS_WINSOCKET 1477 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 1478 {
823 unsigned long arg; 1479 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 1480
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1481 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 1482 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 1483
828 #endif 1484 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1485 o_reify = EV__IOFDSET; /* actually |= */
830 } 1486 }
831#endif
832 1487
833 { 1488 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 1489 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 1490 }
844 1491
845 fdchangecnt = 0; 1492 fdchangecnt = 0;
846} 1493}
847 1494
… …
859 fdchanges [fdchangecnt - 1] = fd; 1506 fdchanges [fdchangecnt - 1] = fd;
860 } 1507 }
861} 1508}
862 1509
863/* 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 */
864inline_speed void 1511inline_speed void ecb_cold
865fd_kill (EV_P_ int fd) 1512fd_kill (EV_P_ int fd)
866{ 1513{
867 ev_io *w; 1514 ev_io *w;
868 1515
869 while ((w = (ev_io *)anfds [fd].head)) 1516 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 1518 ev_io_stop (EV_A_ w);
872 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);
873 } 1520 }
874} 1521}
875 1522
876/* check whether the given fd is atcually valid, for error recovery */ 1523/* check whether the given fd is actually valid, for error recovery */
877inline_size int 1524inline_size int ecb_cold
878fd_valid (int fd) 1525fd_valid (int fd)
879{ 1526{
880#ifdef _WIN32 1527#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 1528 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 1529#else
883 return fcntl (fd, F_GETFD) != -1; 1530 return fcntl (fd, F_GETFD) != -1;
884#endif 1531#endif
885} 1532}
886 1533
887/* called on EBADF to verify fds */ 1534/* called on EBADF to verify fds */
888static void noinline 1535static void noinline ecb_cold
889fd_ebadf (EV_P) 1536fd_ebadf (EV_P)
890{ 1537{
891 int fd; 1538 int fd;
892 1539
893 for (fd = 0; fd < anfdmax; ++fd) 1540 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 1542 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 1543 fd_kill (EV_A_ fd);
897} 1544}
898 1545
899/* 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 */
900static void noinline 1547static void noinline ecb_cold
901fd_enomem (EV_P) 1548fd_enomem (EV_P)
902{ 1549{
903 int fd; 1550 int fd;
904 1551
905 for (fd = anfdmax; fd--; ) 1552 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 1553 if (anfds [fd].events)
907 { 1554 {
908 fd_kill (EV_A_ fd); 1555 fd_kill (EV_A_ fd);
909 return; 1556 break;
910 } 1557 }
911} 1558}
912 1559
913/* 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 */
914static void noinline 1561static void noinline
… …
923 anfds [fd].emask = 0; 1570 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1571 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 1572 }
926} 1573}
927 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
928/*****************************************************************************/ 1589/*****************************************************************************/
929 1590
930/* 1591/*
931 * 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
932 * 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
933 * the branching factor of the d-tree. 1594 * the branching factor of the d-tree.
934 */ 1595 */
935 1596
936/* 1597/*
… …
1004 1665
1005 for (;;) 1666 for (;;)
1006 { 1667 {
1007 int c = k << 1; 1668 int c = k << 1;
1008 1669
1009 if (c > N + HEAP0 - 1) 1670 if (c >= N + HEAP0)
1010 break; 1671 break;
1011 1672
1012 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])
1013 ? 1 : 0; 1674 ? 1 : 0;
1014 1675
… …
1050 1711
1051/* move an element suitably so it is in a correct place */ 1712/* move an element suitably so it is in a correct place */
1052inline_size void 1713inline_size void
1053adjustheap (ANHE *heap, int N, int k) 1714adjustheap (ANHE *heap, int N, int k)
1054{ 1715{
1055 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)]))
1056 upheap (heap, k); 1717 upheap (heap, k);
1057 else 1718 else
1058 downheap (heap, N, k); 1719 downheap (heap, N, k);
1059} 1720}
1060 1721
… …
1073/*****************************************************************************/ 1734/*****************************************************************************/
1074 1735
1075/* associate signal watchers to a signal signal */ 1736/* associate signal watchers to a signal signal */
1076typedef struct 1737typedef struct
1077{ 1738{
1739 EV_ATOMIC_T pending;
1740#if EV_MULTIPLICITY
1741 EV_P;
1742#endif
1078 WL head; 1743 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 1744} ANSIG;
1081 1745
1082static ANSIG *signals; 1746static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 1747
1087/*****************************************************************************/ 1748/*****************************************************************************/
1088 1749
1089/* used to prepare libev internal fd's */ 1750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* this is not fork-safe */
1091inline_speed void
1092fd_intern (int fd)
1093{
1094#ifdef _WIN32
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 1751
1103static void noinline 1752static void noinline ecb_cold
1104evpipe_init (EV_P) 1753evpipe_init (EV_P)
1105{ 1754{
1106 if (!ev_is_active (&pipe_w)) 1755 if (!ev_is_active (&pipe_w))
1107 { 1756 {
1108#if EV_USE_EVENTFD 1757# if EV_USE_EVENTFD
1758 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1759 if (evfd < 0 && errno == EINVAL)
1109 if ((evfd = eventfd (0, 0)) >= 0) 1760 evfd = eventfd (0, 0);
1761
1762 if (evfd >= 0)
1110 { 1763 {
1111 evpipe [0] = -1; 1764 evpipe [0] = -1;
1112 fd_intern (evfd); 1765 fd_intern (evfd); /* doing it twice doesn't hurt */
1113 ev_io_set (&pipe_w, evfd, EV_READ); 1766 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 1767 }
1115 else 1768 else
1116#endif 1769# endif
1117 { 1770 {
1118 while (pipe (evpipe)) 1771 while (pipe (evpipe))
1119 ev_syserr ("(libev) error creating signal/async pipe"); 1772 ev_syserr ("(libev) error creating signal/async pipe");
1120 1773
1121 fd_intern (evpipe [0]); 1774 fd_intern (evpipe [0]);
… …
1126 ev_io_start (EV_A_ &pipe_w); 1779 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */ 1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 } 1781 }
1129} 1782}
1130 1783
1131inline_size void 1784inline_speed void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{ 1786{
1134 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)
1135 { 1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1136 int old_errno = errno; /* save errno because write might clobber it */ 1804 old_errno = errno; /* save errno because write will clobber it */
1137
1138 *flag = 1;
1139 1805
1140#if EV_USE_EVENTFD 1806#if EV_USE_EVENTFD
1141 if (evfd >= 0) 1807 if (evfd >= 0)
1142 { 1808 {
1143 uint64_t counter = 1; 1809 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t)); 1810 write (evfd, &counter, sizeof (uint64_t));
1145 } 1811 }
1146 else 1812 else
1147#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. */
1148 write (evpipe [1], &old_errno, 1); 1820 write (evpipe [1], &(evpipe [1]), 1);
1821 }
1149 1822
1150 errno = old_errno; 1823 errno = old_errno;
1151 } 1824 }
1152} 1825}
1153 1826
1154/* called whenever the libev signal pipe */ 1827/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 1828/* got some events (signal, async) */
1156static void 1829static void
1157pipecb (EV_P_ ev_io *iow, int revents) 1830pipecb (EV_P_ ev_io *iow, int revents)
1158{ 1831{
1832 int i;
1833
1834 if (revents & EV_READ)
1835 {
1159#if EV_USE_EVENTFD 1836#if EV_USE_EVENTFD
1160 if (evfd >= 0) 1837 if (evfd >= 0)
1161 { 1838 {
1162 uint64_t counter; 1839 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 1840 read (evfd, &counter, sizeof (uint64_t));
1164 } 1841 }
1165 else 1842 else
1166#endif 1843#endif
1167 { 1844 {
1168 char dummy; 1845 char dummy;
1846 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1169 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)
1170 } 1855 {
1856 sig_pending = 0;
1171 1857
1172 if (gotsig && ev_is_default_loop (EV_A)) 1858 for (i = EV_NSIG - 1; i--; )
1173 { 1859 if (expect_false (signals [i].pending))
1174 int signum;
1175 gotsig = 0;
1176
1177 for (signum = signalmax; signum--; )
1178 if (signals [signum].gotsig)
1179 ev_feed_signal_event (EV_A_ signum + 1); 1860 ev_feed_signal_event (EV_A_ i + 1);
1180 } 1861 }
1862#endif
1181 1863
1182#if EV_ASYNC_ENABLE 1864#if EV_ASYNC_ENABLE
1183 if (gotasync) 1865 if (async_pending)
1184 { 1866 {
1185 int i; 1867 async_pending = 0;
1186 gotasync = 0;
1187 1868
1188 for (i = asynccnt; i--; ) 1869 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 1870 if (asyncs [i]->sent)
1190 { 1871 {
1191 asyncs [i]->sent = 0; 1872 asyncs [i]->sent = 0;
… …
1195#endif 1876#endif
1196} 1877}
1197 1878
1198/*****************************************************************************/ 1879/*****************************************************************************/
1199 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
1200static void 1898static void
1201ev_sighandler (int signum) 1899ev_sighandler (int signum)
1202{ 1900{
1203#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct;
1205#endif
1206
1207#if _WIN32 1901#ifdef _WIN32
1208 signal (signum, ev_sighandler); 1902 signal (signum, ev_sighandler);
1209#endif 1903#endif
1210 1904
1211 signals [signum - 1].gotsig = 1; 1905 ev_feed_signal (signum);
1212 evpipe_write (EV_A_ &gotsig);
1213} 1906}
1214 1907
1215void noinline 1908void noinline
1216ev_feed_signal_event (EV_P_ int signum) 1909ev_feed_signal_event (EV_P_ int signum)
1217{ 1910{
1218 WL w; 1911 WL w;
1219 1912
1913 if (expect_false (signum <= 0 || signum > EV_NSIG))
1914 return;
1915
1916 --signum;
1917
1220#if EV_MULTIPLICITY 1918#if EV_MULTIPLICITY
1221 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 */
1222#endif 1920 /* or, likely more useful, feeding a signal nobody is waiting for */
1223 1921
1224 --signum; 1922 if (expect_false (signals [signum].loop != EV_A))
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 1923 return;
1924#endif
1228 1925
1229 signals [signum].gotsig = 0; 1926 signals [signum].pending = 0;
1230 1927
1231 for (w = signals [signum].head; w; w = w->next) 1928 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1929 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 1930}
1234 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
1235/*****************************************************************************/ 1954/*****************************************************************************/
1236 1955
1956#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 1957static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 1958
1241static ev_signal childev; 1959static ev_signal childev;
1242 1960
1243#ifndef WIFCONTINUED 1961#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 1962# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 1967child_reap (EV_P_ int chain, int pid, int status)
1250{ 1968{
1251 ev_child *w; 1969 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1970 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 1971
1254 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)
1255 { 1973 {
1256 if ((w->pid == pid || !w->pid) 1974 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 1975 && (!traced || (w->flags & 1)))
1258 { 1976 {
1259 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 */
… …
1284 /* 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 */
1285 /* 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 */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2004 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2005
1288 child_reap (EV_A_ pid, pid, status); 2006 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2007 if ((EV_PID_HASHSIZE) > 1)
1290 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 */
1291} 2009}
1292 2010
1293#endif 2011#endif
1294 2012
1295/*****************************************************************************/ 2013/*****************************************************************************/
1296 2014
2015#if EV_USE_IOCP
2016# include "ev_iocp.c"
2017#endif
1297#if EV_USE_PORT 2018#if EV_USE_PORT
1298# include "ev_port.c" 2019# include "ev_port.c"
1299#endif 2020#endif
1300#if EV_USE_KQUEUE 2021#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2022# include "ev_kqueue.c"
… …
1308#endif 2029#endif
1309#if EV_USE_SELECT 2030#if EV_USE_SELECT
1310# include "ev_select.c" 2031# include "ev_select.c"
1311#endif 2032#endif
1312 2033
1313int 2034int ecb_cold
1314ev_version_major (void) 2035ev_version_major (void)
1315{ 2036{
1316 return EV_VERSION_MAJOR; 2037 return EV_VERSION_MAJOR;
1317} 2038}
1318 2039
1319int 2040int ecb_cold
1320ev_version_minor (void) 2041ev_version_minor (void)
1321{ 2042{
1322 return EV_VERSION_MINOR; 2043 return EV_VERSION_MINOR;
1323} 2044}
1324 2045
1325/* 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 */
1326int inline_size 2047int inline_size ecb_cold
1327enable_secure (void) 2048enable_secure (void)
1328{ 2049{
1329#ifdef _WIN32 2050#ifdef _WIN32
1330 return 0; 2051 return 0;
1331#else 2052#else
1332 return getuid () != geteuid () 2053 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2054 || getgid () != getegid ();
1334#endif 2055#endif
1335} 2056}
1336 2057
1337unsigned int 2058unsigned int ecb_cold
1338ev_supported_backends (void) 2059ev_supported_backends (void)
1339{ 2060{
1340 unsigned int flags = 0; 2061 unsigned int flags = 0;
1341 2062
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2067 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1347 2068
1348 return flags; 2069 return flags;
1349} 2070}
1350 2071
1351unsigned int 2072unsigned int ecb_cold
1352ev_recommended_backends (void) 2073ev_recommended_backends (void)
1353{ 2074{
1354 unsigned int flags = ev_supported_backends (); 2075 unsigned int flags = ev_supported_backends ();
1355 2076
1356#ifndef __NetBSD__ 2077#ifndef __NetBSD__
… …
1361#ifdef __APPLE__ 2082#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2083 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2084 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 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 */
1365#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
1366 2090
1367 return flags; 2091 return flags;
1368} 2092}
1369 2093
1370unsigned int 2094unsigned int ecb_cold
1371ev_embeddable_backends (void) 2095ev_embeddable_backends (void)
1372{ 2096{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1374 2098
1375 /* 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 */
1376 /* please fix it and tell me how to detect the fix */ 2100 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1377 flags &= ~EVBACKEND_EPOLL; 2101 flags &= ~EVBACKEND_EPOLL;
1378 2102
1379 return flags; 2103 return flags;
1380} 2104}
1381 2105
1382unsigned int 2106unsigned int
1383ev_backend (EV_P) 2107ev_backend (EV_P)
1384{ 2108{
1385 return backend; 2109 return backend;
1386} 2110}
1387 2111
1388#if EV_MINIMAL < 2 2112#if EV_FEATURE_API
1389unsigned int 2113unsigned int
1390ev_loop_count (EV_P) 2114ev_iteration (EV_P)
1391{ 2115{
1392 return loop_count; 2116 return loop_count;
1393} 2117}
1394 2118
1395unsigned int 2119unsigned int
1396ev_loop_depth (EV_P) 2120ev_depth (EV_P)
1397{ 2121{
1398 return loop_depth; 2122 return loop_depth;
1399} 2123}
1400 2124
1401void 2125void
… …
1420ev_userdata (EV_P) 2144ev_userdata (EV_P)
1421{ 2145{
1422 return userdata; 2146 return userdata;
1423} 2147}
1424 2148
2149void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2150ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1426{ 2151{
1427 invoke_cb = invoke_pending_cb; 2152 invoke_cb = invoke_pending_cb;
1428} 2153}
1429 2154
2155void
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2156ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1431{ 2157{
1432 release_cb = release; 2158 release_cb = release;
1433 acquire_cb = acquire; 2159 acquire_cb = acquire;
1434} 2160}
1435#endif 2161#endif
1436 2162
1437/* initialise a loop structure, must be zero-initialised */ 2163/* initialise a loop structure, must be zero-initialised */
1438static void noinline 2164static void noinline ecb_cold
1439loop_init (EV_P_ unsigned int flags) 2165loop_init (EV_P_ unsigned int flags)
1440{ 2166{
1441 if (!backend) 2167 if (!backend)
1442 { 2168 {
2169 origflags = flags;
2170
1443#if EV_USE_REALTIME 2171#if EV_USE_REALTIME
1444 if (!have_realtime) 2172 if (!have_realtime)
1445 { 2173 {
1446 struct timespec ts; 2174 struct timespec ts;
1447 2175
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2186 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 2187 have_monotonic = 1;
1460 } 2188 }
1461#endif 2189#endif
1462 2190
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 2191 /* pid check not overridable via env */
1481#ifndef _WIN32 2192#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 2193 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 2194 curpid = getpid ();
1484#endif 2195#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 2197 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 2198 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 2199 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 2200 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 2201
1491 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))
1492 flags |= ev_recommended_backends (); 2228 flags |= ev_recommended_backends ();
1493 2229
2230#if EV_USE_IOCP
2231 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2232#endif
1494#if EV_USE_PORT 2233#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2234 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 2235#endif
1497#if EV_USE_KQUEUE 2236#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2237 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2246 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1508#endif 2247#endif
1509 2248
1510 ev_prepare_init (&pending_w, pendingcb); 2249 ev_prepare_init (&pending_w, pendingcb);
1511 2250
2251#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 2252 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 2253 ev_set_priority (&pipe_w, EV_MAXPRI);
2254#endif
1514 } 2255 }
1515} 2256}
1516 2257
1517/* free up a loop structure */ 2258/* free up a loop structure */
1518static void noinline 2259void ecb_cold
1519loop_destroy (EV_P) 2260ev_loop_destroy (EV_P)
1520{ 2261{
1521 int i; 2262 int i;
1522 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
1523 if (ev_is_active (&pipe_w)) 2287 if (ev_is_active (&pipe_w))
1524 { 2288 {
1525 ev_ref (EV_A); /* signal watcher */ 2289 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 2290 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 2291
1528#if EV_USE_EVENTFD 2292#if EV_USE_EVENTFD
1529 if (evfd >= 0) 2293 if (evfd >= 0)
1530 close (evfd); 2294 close (evfd);
1531#endif 2295#endif
1532 2296
1533 if (evpipe [0] >= 0) 2297 if (evpipe [0] >= 0)
1534 { 2298 {
1535 close (evpipe [0]); 2299 EV_WIN32_CLOSE_FD (evpipe [0]);
1536 close (evpipe [1]); 2300 EV_WIN32_CLOSE_FD (evpipe [1]);
1537 } 2301 }
1538 } 2302 }
2303
2304#if EV_USE_SIGNALFD
2305 if (ev_is_active (&sigfd_w))
2306 close (sigfd);
2307#endif
1539 2308
1540#if EV_USE_INOTIFY 2309#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 2310 if (fs_fd >= 0)
1542 close (fs_fd); 2311 close (fs_fd);
1543#endif 2312#endif
1544 2313
1545 if (backend_fd >= 0) 2314 if (backend_fd >= 0)
1546 close (backend_fd); 2315 close (backend_fd);
1547 2316
2317#if EV_USE_IOCP
2318 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2319#endif
1548#if EV_USE_PORT 2320#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2321 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 2322#endif
1551#if EV_USE_KQUEUE 2323#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2324 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1567#if EV_IDLE_ENABLE 2339#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 2340 array_free (idle, [i]);
1569#endif 2341#endif
1570 } 2342 }
1571 2343
1572 ev_free (anfds); anfdmax = 0; 2344 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 2345
1574 /* have to use the microsoft-never-gets-it-right macro */ 2346 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 2347 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 2348 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 2349 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 2351 array_free (periodic, EMPTY);
1580#endif 2352#endif
1581#if EV_FORK_ENABLE 2353#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 2354 array_free (fork, EMPTY);
1583#endif 2355#endif
2356#if EV_CLEANUP_ENABLE
2357 array_free (cleanup, EMPTY);
2358#endif
1584 array_free (prepare, EMPTY); 2359 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 2360 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 2361#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 2362 array_free (async, EMPTY);
1588#endif 2363#endif
1589 2364
1590 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
1591} 2375}
1592 2376
1593#if EV_USE_INOTIFY 2377#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 2378inline_size void infy_fork (EV_P);
1595#endif 2379#endif
… …
1610 infy_fork (EV_A); 2394 infy_fork (EV_A);
1611#endif 2395#endif
1612 2396
1613 if (ev_is_active (&pipe_w)) 2397 if (ev_is_active (&pipe_w))
1614 { 2398 {
1615 /* this "locks" the handlers against writing to the pipe */ 2399 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 2400
1622 ev_ref (EV_A); 2401 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 2402 ev_io_stop (EV_A_ &pipe_w);
1624 2403
1625#if EV_USE_EVENTFD 2404#if EV_USE_EVENTFD
… …
1627 close (evfd); 2406 close (evfd);
1628#endif 2407#endif
1629 2408
1630 if (evpipe [0] >= 0) 2409 if (evpipe [0] >= 0)
1631 { 2410 {
1632 close (evpipe [0]); 2411 EV_WIN32_CLOSE_FD (evpipe [0]);
1633 close (evpipe [1]); 2412 EV_WIN32_CLOSE_FD (evpipe [1]);
1634 } 2413 }
1635 2414
2415#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1636 evpipe_init (EV_A); 2416 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 2417 /* now iterate over everything, in case we missed something */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 2418 pipecb (EV_A_ &pipe_w, EV_READ);
2419#endif
1639 } 2420 }
1640 2421
1641 postfork = 0; 2422 postfork = 0;
1642} 2423}
1643 2424
1644#if EV_MULTIPLICITY 2425#if EV_MULTIPLICITY
1645 2426
1646struct ev_loop * 2427struct ev_loop * ecb_cold
1647ev_loop_new (unsigned int flags) 2428ev_loop_new (unsigned int flags)
1648{ 2429{
1649 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));
1650 2431
1651 memset (loop, 0, sizeof (struct ev_loop)); 2432 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 2433 loop_init (EV_A_ flags);
1654 2434
1655 if (ev_backend (EV_A)) 2435 if (ev_backend (EV_A))
1656 return loop; 2436 return EV_A;
1657 2437
2438 ev_free (EV_A);
1658 return 0; 2439 return 0;
1659} 2440}
1660 2441
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 2442#endif /* multiplicity */
1674 2443
1675#if EV_VERIFY 2444#if EV_VERIFY
1676static void noinline 2445static void noinline ecb_cold
1677verify_watcher (EV_P_ W w) 2446verify_watcher (EV_P_ W w)
1678{ 2447{
1679 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));
1680 2449
1681 if (w->pending) 2450 if (w->pending)
1682 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));
1683} 2452}
1684 2453
1685static void noinline 2454static void noinline ecb_cold
1686verify_heap (EV_P_ ANHE *heap, int N) 2455verify_heap (EV_P_ ANHE *heap, int N)
1687{ 2456{
1688 int i; 2457 int i;
1689 2458
1690 for (i = HEAP0; i < N + HEAP0; ++i) 2459 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 2464
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2465 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 2466 }
1698} 2467}
1699 2468
1700static void noinline 2469static void noinline ecb_cold
1701array_verify (EV_P_ W *ws, int cnt) 2470array_verify (EV_P_ W *ws, int cnt)
1702{ 2471{
1703 while (cnt--) 2472 while (cnt--)
1704 { 2473 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2474 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 2475 verify_watcher (EV_A_ ws [cnt]);
1707 } 2476 }
1708} 2477}
1709#endif 2478#endif
1710 2479
1711#if EV_MINIMAL < 2 2480#if EV_FEATURE_API
1712void 2481void ecb_cold
1713ev_loop_verify (EV_P) 2482ev_verify (EV_P)
1714{ 2483{
1715#if EV_VERIFY 2484#if EV_VERIFY
1716 int i; 2485 int i;
1717 WL w; 2486 WL w;
1718 2487
… …
1752#if EV_FORK_ENABLE 2521#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 2522 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 2523 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 2524#endif
1756 2525
2526#if EV_CLEANUP_ENABLE
2527 assert (cleanupmax >= cleanupcnt);
2528 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2529#endif
2530
1757#if EV_ASYNC_ENABLE 2531#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 2532 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 2533 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 2534#endif
1761 2535
2536#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 2537 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 2538 array_verify (EV_A_ (W *)prepares, preparecnt);
2539#endif
1764 2540
2541#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 2542 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 2543 array_verify (EV_A_ (W *)checks, checkcnt);
2544#endif
1767 2545
1768# if 0 2546# if 0
2547#if EV_CHILD_ENABLE
1769 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)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2549 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2550#endif
1771# endif 2551# endif
1772#endif 2552#endif
1773} 2553}
1774#endif 2554#endif
1775 2555
1776#if EV_MULTIPLICITY 2556#if EV_MULTIPLICITY
1777struct ev_loop * 2557struct ev_loop * ecb_cold
1778ev_default_loop_init (unsigned int flags)
1779#else 2558#else
1780int 2559int
2560#endif
1781ev_default_loop (unsigned int flags) 2561ev_default_loop (unsigned int flags)
1782#endif
1783{ 2562{
1784 if (!ev_default_loop_ptr) 2563 if (!ev_default_loop_ptr)
1785 { 2564 {
1786#if EV_MULTIPLICITY 2565#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2566 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 2567#else
1789 ev_default_loop_ptr = 1; 2568 ev_default_loop_ptr = 1;
1790#endif 2569#endif
1791 2570
1792 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1793 2572
1794 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1795 { 2574 {
1796#ifndef _WIN32 2575#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 2576 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 2577 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 2578 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2579 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 2580#endif
… …
1806 2585
1807 return ev_default_loop_ptr; 2586 return ev_default_loop_ptr;
1808} 2587}
1809 2588
1810void 2589void
1811ev_default_destroy (void) 2590ev_loop_fork (EV_P)
1812{ 2591{
1813#if EV_MULTIPLICITY
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */ 2592 postfork = 1; /* must be in line with ev_default_fork */
1835} 2593}
1836 2594
1837/*****************************************************************************/ 2595/*****************************************************************************/
1838 2596
1839void 2597void
1840ev_invoke (EV_P_ void *w, int revents) 2598ev_invoke (EV_P_ void *w, int revents)
1841{ 2599{
1842 EV_CB_INVOKE ((W)w, revents); 2600 EV_CB_INVOKE ((W)w, revents);
2601}
2602
2603unsigned int
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;
1843} 2613}
1844 2614
1845void noinline 2615void noinline
1846ev_invoke_pending (EV_P) 2616ev_invoke_pending (EV_P)
1847{ 2617{
… …
1849 2619
1850 for (pri = NUMPRI; pri--; ) 2620 for (pri = NUMPRI; pri--; )
1851 while (pendingcnt [pri]) 2621 while (pendingcnt [pri])
1852 { 2622 {
1853 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2623 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1854
1855 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1856 /* ^ this is no longer true, as pending_w could be here */
1857 2624
1858 p->w->pending = 0; 2625 p->w->pending = 0;
1859 EV_CB_INVOKE (p->w, p->events); 2626 EV_CB_INVOKE (p->w, p->events);
1860 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
1861 } 2628 }
… …
1918 EV_FREQUENT_CHECK; 2685 EV_FREQUENT_CHECK;
1919 feed_reverse (EV_A_ (W)w); 2686 feed_reverse (EV_A_ (W)w);
1920 } 2687 }
1921 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2688 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1922 2689
1923 feed_reverse_done (EV_A_ EV_TIMEOUT); 2690 feed_reverse_done (EV_A_ EV_TIMER);
1924 } 2691 }
1925} 2692}
1926 2693
1927#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
1928/* make periodics pending */ 2720/* make periodics pending */
1929inline_size void 2721inline_size void
1930periodics_reify (EV_P) 2722periodics_reify (EV_P)
1931{ 2723{
1932 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
… …
1951 ANHE_at_cache (periodics [HEAP0]); 2743 ANHE_at_cache (periodics [HEAP0]);
1952 downheap (periodics, periodiccnt, HEAP0); 2744 downheap (periodics, periodiccnt, HEAP0);
1953 } 2745 }
1954 else if (w->interval) 2746 else if (w->interval)
1955 { 2747 {
1956 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2748 periodic_recalc (EV_A_ w);
1957 /* if next trigger time is not sufficiently in the future, put it there */
1958 /* this might happen because of floating point inexactness */
1959 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1960 {
1961 ev_at (w) += w->interval;
1962
1963 /* if interval is unreasonably low we might still have a time in the past */
1964 /* so correct this. this will make the periodic very inexact, but the user */
1965 /* has effectively asked to get triggered more often than possible */
1966 if (ev_at (w) < ev_rt_now)
1967 ev_at (w) = ev_rt_now;
1968 }
1969
1970 ANHE_at_cache (periodics [HEAP0]); 2749 ANHE_at_cache (periodics [HEAP0]);
1971 downheap (periodics, periodiccnt, HEAP0); 2750 downheap (periodics, periodiccnt, HEAP0);
1972 } 2751 }
1973 else 2752 else
1974 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2753 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1981 feed_reverse_done (EV_A_ EV_PERIODIC); 2760 feed_reverse_done (EV_A_ EV_PERIODIC);
1982 } 2761 }
1983} 2762}
1984 2763
1985/* simply recalculate all periodics */ 2764/* simply recalculate all periodics */
1986/* 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? */
1987static void noinline 2766static void noinline ecb_cold
1988periodics_reschedule (EV_P) 2767periodics_reschedule (EV_P)
1989{ 2768{
1990 int i; 2769 int i;
1991 2770
1992 /* adjust periodics after time jump */ 2771 /* adjust periodics after time jump */
… …
1995 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2774 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1996 2775
1997 if (w->reschedule_cb) 2776 if (w->reschedule_cb)
1998 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2777 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1999 else if (w->interval) 2778 else if (w->interval)
2000 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2779 periodic_recalc (EV_A_ w);
2001 2780
2002 ANHE_at_cache (periodics [i]); 2781 ANHE_at_cache (periodics [i]);
2003 } 2782 }
2004 2783
2005 reheap (periodics, periodiccnt); 2784 reheap (periodics, periodiccnt);
2006} 2785}
2007#endif 2786#endif
2008 2787
2009/* adjust all timers by a given offset */ 2788/* adjust all timers by a given offset */
2010static void noinline 2789static void noinline ecb_cold
2011timers_reschedule (EV_P_ ev_tstamp adjust) 2790timers_reschedule (EV_P_ ev_tstamp adjust)
2012{ 2791{
2013 int i; 2792 int i;
2014 2793
2015 for (i = 0; i < timercnt; ++i) 2794 for (i = 0; i < timercnt; ++i)
… …
2019 ANHE_at_cache (*he); 2798 ANHE_at_cache (*he);
2020 } 2799 }
2021} 2800}
2022 2801
2023/* fetch new monotonic and realtime times from the kernel */ 2802/* fetch new monotonic and realtime times from the kernel */
2024/* also detetc if there was a timejump, and act accordingly */ 2803/* also detect if there was a timejump, and act accordingly */
2025inline_speed void 2804inline_speed void
2026time_update (EV_P_ ev_tstamp max_block) 2805time_update (EV_P_ ev_tstamp max_block)
2027{ 2806{
2028#if EV_USE_MONOTONIC 2807#if EV_USE_MONOTONIC
2029 if (expect_true (have_monotonic)) 2808 if (expect_true (have_monotonic))
… …
2052 * 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
2053 * in the unlikely event of having been preempted here. 2832 * in the unlikely event of having been preempted here.
2054 */ 2833 */
2055 for (i = 4; --i; ) 2834 for (i = 4; --i; )
2056 { 2835 {
2836 ev_tstamp diff;
2057 rtmn_diff = ev_rt_now - mn_now; 2837 rtmn_diff = ev_rt_now - mn_now;
2058 2838
2839 diff = odiff - rtmn_diff;
2840
2059 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2841 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2060 return; /* all is well */ 2842 return; /* all is well */
2061 2843
2062 ev_rt_now = ev_time (); 2844 ev_rt_now = ev_time ();
2063 mn_now = get_clock (); 2845 mn_now = get_clock ();
2064 now_floor = mn_now; 2846 now_floor = mn_now;
… …
2087 mn_now = ev_rt_now; 2869 mn_now = ev_rt_now;
2088 } 2870 }
2089} 2871}
2090 2872
2091void 2873void
2092ev_loop (EV_P_ int flags) 2874ev_run (EV_P_ int flags)
2093{ 2875{
2094#if EV_MINIMAL < 2 2876#if EV_FEATURE_API
2095 ++loop_depth; 2877 ++loop_depth;
2096#endif 2878#endif
2097 2879
2098 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2880 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2099 2881
2100 loop_done = EVUNLOOP_CANCEL; 2882 loop_done = EVBREAK_CANCEL;
2101 2883
2102 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2884 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2103 2885
2104 do 2886 do
2105 { 2887 {
2106#if EV_VERIFY >= 2 2888#if EV_VERIFY >= 2
2107 ev_loop_verify (EV_A); 2889 ev_verify (EV_A);
2108#endif 2890#endif
2109 2891
2110#ifndef _WIN32 2892#ifndef _WIN32
2111 if (expect_false (curpid)) /* penalise the forking check even more */ 2893 if (expect_false (curpid)) /* penalise the forking check even more */
2112 if (expect_false (getpid () != curpid)) 2894 if (expect_false (getpid () != curpid))
… …
2124 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2906 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2125 EV_INVOKE_PENDING; 2907 EV_INVOKE_PENDING;
2126 } 2908 }
2127#endif 2909#endif
2128 2910
2911#if EV_PREPARE_ENABLE
2129 /* queue prepare watchers (and execute them) */ 2912 /* queue prepare watchers (and execute them) */
2130 if (expect_false (preparecnt)) 2913 if (expect_false (preparecnt))
2131 { 2914 {
2132 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2915 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2133 EV_INVOKE_PENDING; 2916 EV_INVOKE_PENDING;
2134 } 2917 }
2918#endif
2135 2919
2136 if (expect_false (loop_done)) 2920 if (expect_false (loop_done))
2137 break; 2921 break;
2138 2922
2139 /* we might have forked, so reify kernel state if necessary */ 2923 /* we might have forked, so reify kernel state if necessary */
… …
2146 /* calculate blocking time */ 2930 /* calculate blocking time */
2147 { 2931 {
2148 ev_tstamp waittime = 0.; 2932 ev_tstamp waittime = 0.;
2149 ev_tstamp sleeptime = 0.; 2933 ev_tstamp sleeptime = 0.;
2150 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
2151 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2946 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2152 { 2947 {
2153 /* remember old timestamp for io_blocktime calculation */
2154 ev_tstamp prev_mn_now = mn_now;
2155
2156 /* update time to cancel out callback processing overhead */
2157 time_update (EV_A_ 1e100);
2158
2159 waittime = MAX_BLOCKTIME; 2948 waittime = MAX_BLOCKTIME;
2160 2949
2161 if (timercnt) 2950 if (timercnt)
2162 { 2951 {
2163 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2952 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2164 if (waittime > to) waittime = to; 2953 if (waittime > to) waittime = to;
2165 } 2954 }
2166 2955
2167#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
2168 if (periodiccnt) 2957 if (periodiccnt)
2169 { 2958 {
2170 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2959 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2171 if (waittime > to) waittime = to; 2960 if (waittime > to) waittime = to;
2172 } 2961 }
2173#endif 2962#endif
2174 2963
2175 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2964 /* don't let timeouts decrease the waittime below timeout_blocktime */
2176 if (expect_false (waittime < timeout_blocktime)) 2965 if (expect_false (waittime < timeout_blocktime))
2177 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;
2178 2972
2179 /* extra check because io_blocktime is commonly 0 */ 2973 /* extra check because io_blocktime is commonly 0 */
2180 if (expect_false (io_blocktime)) 2974 if (expect_false (io_blocktime))
2181 { 2975 {
2182 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2976 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2183 2977
2184 if (sleeptime > waittime - backend_fudge) 2978 if (sleeptime > waittime - backend_mintime)
2185 sleeptime = waittime - backend_fudge; 2979 sleeptime = waittime - backend_mintime;
2186 2980
2187 if (expect_true (sleeptime > 0.)) 2981 if (expect_true (sleeptime > 0.))
2188 { 2982 {
2189 ev_sleep (sleeptime); 2983 ev_sleep (sleeptime);
2190 waittime -= sleeptime; 2984 waittime -= sleeptime;
2191 } 2985 }
2192 } 2986 }
2193 } 2987 }
2194 2988
2195#if EV_MINIMAL < 2 2989#if EV_FEATURE_API
2196 ++loop_count; 2990 ++loop_count;
2197#endif 2991#endif
2198 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2199 backend_poll (EV_A_ waittime); 2993 backend_poll (EV_A_ waittime);
2200 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 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
2201 3004
2202 /* update ev_rt_now, do magic */ 3005 /* update ev_rt_now, do magic */
2203 time_update (EV_A_ waittime + sleeptime); 3006 time_update (EV_A_ waittime + sleeptime);
2204 } 3007 }
2205 3008
… …
2212#if EV_IDLE_ENABLE 3015#if EV_IDLE_ENABLE
2213 /* queue idle watchers unless other events are pending */ 3016 /* queue idle watchers unless other events are pending */
2214 idle_reify (EV_A); 3017 idle_reify (EV_A);
2215#endif 3018#endif
2216 3019
3020#if EV_CHECK_ENABLE
2217 /* queue check watchers, to be executed first */ 3021 /* queue check watchers, to be executed first */
2218 if (expect_false (checkcnt)) 3022 if (expect_false (checkcnt))
2219 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3024#endif
2220 3025
2221 EV_INVOKE_PENDING; 3026 EV_INVOKE_PENDING;
2222 } 3027 }
2223 while (expect_true ( 3028 while (expect_true (
2224 activecnt 3029 activecnt
2225 && !loop_done 3030 && !loop_done
2226 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3031 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2227 )); 3032 ));
2228 3033
2229 if (loop_done == EVUNLOOP_ONE) 3034 if (loop_done == EVBREAK_ONE)
2230 loop_done = EVUNLOOP_CANCEL; 3035 loop_done = EVBREAK_CANCEL;
2231 3036
2232#if EV_MINIMAL < 2 3037#if EV_FEATURE_API
2233 --loop_depth; 3038 --loop_depth;
2234#endif 3039#endif
2235} 3040}
2236 3041
2237void 3042void
2238ev_unloop (EV_P_ int how) 3043ev_break (EV_P_ int how)
2239{ 3044{
2240 loop_done = how; 3045 loop_done = how;
2241} 3046}
2242 3047
2243void 3048void
… …
2290inline_size void 3095inline_size void
2291wlist_del (WL *head, WL elem) 3096wlist_del (WL *head, WL elem)
2292{ 3097{
2293 while (*head) 3098 while (*head)
2294 { 3099 {
2295 if (*head == elem) 3100 if (expect_true (*head == elem))
2296 { 3101 {
2297 *head = elem->next; 3102 *head = elem->next;
2298 return; 3103 break;
2299 } 3104 }
2300 3105
2301 head = &(*head)->next; 3106 head = &(*head)->next;
2302 } 3107 }
2303} 3108}
… …
2363 3168
2364 if (expect_false (ev_is_active (w))) 3169 if (expect_false (ev_is_active (w)))
2365 return; 3170 return;
2366 3171
2367 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3172 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2368 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))));
2369 3174
2370 EV_FREQUENT_CHECK; 3175 EV_FREQUENT_CHECK;
2371 3176
2372 ev_start (EV_A_ (W)w, 1); 3177 ev_start (EV_A_ (W)w, 1);
2373 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3178 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2391 EV_FREQUENT_CHECK; 3196 EV_FREQUENT_CHECK;
2392 3197
2393 wlist_del (&anfds[w->fd].head, (WL)w); 3198 wlist_del (&anfds[w->fd].head, (WL)w);
2394 ev_stop (EV_A_ (W)w); 3199 ev_stop (EV_A_ (W)w);
2395 3200
2396 fd_change (EV_A_ w->fd, 1); 3201 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2397 3202
2398 EV_FREQUENT_CHECK; 3203 EV_FREQUENT_CHECK;
2399} 3204}
2400 3205
2401void noinline 3206void noinline
… …
2443 timers [active] = timers [timercnt + HEAP0]; 3248 timers [active] = timers [timercnt + HEAP0];
2444 adjustheap (timers, timercnt, active); 3249 adjustheap (timers, timercnt, active);
2445 } 3250 }
2446 } 3251 }
2447 3252
2448 EV_FREQUENT_CHECK;
2449
2450 ev_at (w) -= mn_now; 3253 ev_at (w) -= mn_now;
2451 3254
2452 ev_stop (EV_A_ (W)w); 3255 ev_stop (EV_A_ (W)w);
3256
3257 EV_FREQUENT_CHECK;
2453} 3258}
2454 3259
2455void noinline 3260void noinline
2456ev_timer_again (EV_P_ ev_timer *w) 3261ev_timer_again (EV_P_ ev_timer *w)
2457{ 3262{
… …
2475 } 3280 }
2476 3281
2477 EV_FREQUENT_CHECK; 3282 EV_FREQUENT_CHECK;
2478} 3283}
2479 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
2480#if EV_PERIODIC_ENABLE 3291#if EV_PERIODIC_ENABLE
2481void noinline 3292void noinline
2482ev_periodic_start (EV_P_ ev_periodic *w) 3293ev_periodic_start (EV_P_ ev_periodic *w)
2483{ 3294{
2484 if (expect_false (ev_is_active (w))) 3295 if (expect_false (ev_is_active (w)))
… …
2487 if (w->reschedule_cb) 3298 if (w->reschedule_cb)
2488 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3299 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2489 else if (w->interval) 3300 else if (w->interval)
2490 { 3301 {
2491 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.));
2492 /* this formula differs from the one in periodic_reify because we do not always round up */ 3303 periodic_recalc (EV_A_ w);
2493 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2494 } 3304 }
2495 else 3305 else
2496 ev_at (w) = w->offset; 3306 ev_at (w) = w->offset;
2497 3307
2498 EV_FREQUENT_CHECK; 3308 EV_FREQUENT_CHECK;
… …
2530 periodics [active] = periodics [periodiccnt + HEAP0]; 3340 periodics [active] = periodics [periodiccnt + HEAP0];
2531 adjustheap (periodics, periodiccnt, active); 3341 adjustheap (periodics, periodiccnt, active);
2532 } 3342 }
2533 } 3343 }
2534 3344
2535 EV_FREQUENT_CHECK;
2536
2537 ev_stop (EV_A_ (W)w); 3345 ev_stop (EV_A_ (W)w);
3346
3347 EV_FREQUENT_CHECK;
2538} 3348}
2539 3349
2540void noinline 3350void noinline
2541ev_periodic_again (EV_P_ ev_periodic *w) 3351ev_periodic_again (EV_P_ ev_periodic *w)
2542{ 3352{
… …
2548 3358
2549#ifndef SA_RESTART 3359#ifndef SA_RESTART
2550# define SA_RESTART 0 3360# define SA_RESTART 0
2551#endif 3361#endif
2552 3362
3363#if EV_SIGNAL_ENABLE
3364
2553void noinline 3365void noinline
2554ev_signal_start (EV_P_ ev_signal *w) 3366ev_signal_start (EV_P_ ev_signal *w)
2555{ 3367{
2556#if EV_MULTIPLICITY
2557 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2558#endif
2559 if (expect_false (ev_is_active (w))) 3368 if (expect_false (ev_is_active (w)))
2560 return; 3369 return;
2561 3370
2562 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));
2563 3372
2564 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));
2565 3376
2566 EV_FREQUENT_CHECK; 3377 signals [w->signum - 1].loop = EV_A;
3378#endif
2567 3379
3380 EV_FREQUENT_CHECK;
3381
3382#if EV_USE_SIGNALFD
3383 if (sigfd == -2)
2568 { 3384 {
2569#ifndef _WIN32 3385 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2570 sigset_t full, prev; 3386 if (sigfd < 0 && errno == EINVAL)
2571 sigfillset (&full); 3387 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2572 sigprocmask (SIG_SETMASK, &full, &prev);
2573#endif
2574 3388
2575 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 */
2576 3392
2577#ifndef _WIN32 3393 sigemptyset (&sigfd_set);
2578 sigprocmask (SIG_SETMASK, &prev, 0); 3394
2579#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 }
2580 } 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
2581 3411
2582 ev_start (EV_A_ (W)w, 1); 3412 ev_start (EV_A_ (W)w, 1);
2583 wlist_add (&signals [w->signum - 1].head, (WL)w); 3413 wlist_add (&signals [w->signum - 1].head, (WL)w);
2584 3414
2585 if (!((WL)w)->next) 3415 if (!((WL)w)->next)
3416# if EV_USE_SIGNALFD
3417 if (sigfd < 0) /*TODO*/
3418# endif
2586 { 3419 {
2587#if _WIN32 3420# ifdef _WIN32
3421 evpipe_init (EV_A);
3422
2588 signal (w->signum, ev_sighandler); 3423 signal (w->signum, ev_sighandler);
2589#else 3424# else
2590 struct sigaction sa; 3425 struct sigaction sa;
3426
3427 evpipe_init (EV_A);
3428
2591 sa.sa_handler = ev_sighandler; 3429 sa.sa_handler = ev_sighandler;
2592 sigfillset (&sa.sa_mask); 3430 sigfillset (&sa.sa_mask);
2593 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 */
2594 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 }
2595#endif 3440#endif
2596 } 3441 }
2597 3442
2598 EV_FREQUENT_CHECK; 3443 EV_FREQUENT_CHECK;
2599} 3444}
2600 3445
2601void noinline 3446void noinline
… …
2609 3454
2610 wlist_del (&signals [w->signum - 1].head, (WL)w); 3455 wlist_del (&signals [w->signum - 1].head, (WL)w);
2611 ev_stop (EV_A_ (W)w); 3456 ev_stop (EV_A_ (W)w);
2612 3457
2613 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
2614 signal (w->signum, SIG_DFL); 3477 signal (w->signum, SIG_DFL);
3478 }
2615 3479
2616 EV_FREQUENT_CHECK; 3480 EV_FREQUENT_CHECK;
2617} 3481}
3482
3483#endif
3484
3485#if EV_CHILD_ENABLE
2618 3486
2619void 3487void
2620ev_child_start (EV_P_ ev_child *w) 3488ev_child_start (EV_P_ ev_child *w)
2621{ 3489{
2622#if EV_MULTIPLICITY 3490#if EV_MULTIPLICITY
… …
2626 return; 3494 return;
2627 3495
2628 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
2629 3497
2630 ev_start (EV_A_ (W)w, 1); 3498 ev_start (EV_A_ (W)w, 1);
2631 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3499 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2632 3500
2633 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2634} 3502}
2635 3503
2636void 3504void
… …
2640 if (expect_false (!ev_is_active (w))) 3508 if (expect_false (!ev_is_active (w)))
2641 return; 3509 return;
2642 3510
2643 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2644 3512
2645 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3513 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2646 ev_stop (EV_A_ (W)w); 3514 ev_stop (EV_A_ (W)w);
2647 3515
2648 EV_FREQUENT_CHECK; 3516 EV_FREQUENT_CHECK;
2649} 3517}
3518
3519#endif
2650 3520
2651#if EV_STAT_ENABLE 3521#if EV_STAT_ENABLE
2652 3522
2653# ifdef _WIN32 3523# ifdef _WIN32
2654# undef lstat 3524# undef lstat
… …
2660#define MIN_STAT_INTERVAL 0.1074891 3530#define MIN_STAT_INTERVAL 0.1074891
2661 3531
2662static 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);
2663 3533
2664#if EV_USE_INOTIFY 3534#if EV_USE_INOTIFY
2665# 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)
2666 3538
2667static void noinline 3539static void noinline
2668infy_add (EV_P_ ev_stat *w) 3540infy_add (EV_P_ ev_stat *w)
2669{ 3541{
2670 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);
2671 3543
2672 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 */
2673 { 3564 }
3565 else
3566 {
3567 /* can't use inotify, continue to stat */
2674 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3568 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2675 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2676 3569
2677 /* monitor some parent directory for speedup hints */ 3570 /* if path is not there, monitor some parent directory for speedup hints */
2678 /* 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, */
2679 /* but an efficiency issue only */ 3572 /* but an efficiency issue only */
2680 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3573 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2681 { 3574 {
2682 char path [4096]; 3575 char path [4096];
… …
2692 if (!pend || pend == path) 3585 if (!pend || pend == path)
2693 break; 3586 break;
2694 3587
2695 *pend = 0; 3588 *pend = 0;
2696 w->wd = inotify_add_watch (fs_fd, path, mask); 3589 w->wd = inotify_add_watch (fs_fd, path, mask);
2697 } 3590 }
2698 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3591 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2699 } 3592 }
2700 } 3593 }
2701 3594
2702 if (w->wd >= 0) 3595 if (w->wd >= 0)
2703 {
2704 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);
2705 3597
2706 /* now local changes will be tracked by inotify, but remote changes won't */ 3598 /* now re-arm timer, if required */
2707 /* unless the filesystem it known to be local, we therefore still poll */ 3599 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2708 /* also do poll on <2.6.25, but with normal frequency */
2709 struct statfs sfs;
2710
2711 if (fs_2625 && !statfs (w->path, &sfs))
2712 if (sfs.f_type == 0x1373 /* devfs */
2713 || sfs.f_type == 0xEF53 /* ext2/3 */
2714 || sfs.f_type == 0x3153464a /* jfs */
2715 || sfs.f_type == 0x52654973 /* reiser3 */
2716 || sfs.f_type == 0x01021994 /* tempfs */
2717 || sfs.f_type == 0x58465342 /* xfs */)
2718 return;
2719
2720 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2721 ev_timer_again (EV_A_ &w->timer); 3600 ev_timer_again (EV_A_ &w->timer);
2722 } 3601 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2723} 3602}
2724 3603
2725static void noinline 3604static void noinline
2726infy_del (EV_P_ ev_stat *w) 3605infy_del (EV_P_ ev_stat *w)
2727{ 3606{
… …
2730 3609
2731 if (wd < 0) 3610 if (wd < 0)
2732 return; 3611 return;
2733 3612
2734 w->wd = -2; 3613 w->wd = -2;
2735 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3614 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2736 wlist_del (&fs_hash [slot].head, (WL)w); 3615 wlist_del (&fs_hash [slot].head, (WL)w);
2737 3616
2738 /* remove this watcher, if others are watching it, they will rearm */ 3617 /* remove this watcher, if others are watching it, they will rearm */
2739 inotify_rm_watch (fs_fd, wd); 3618 inotify_rm_watch (fs_fd, wd);
2740} 3619}
… …
2742static void noinline 3621static void noinline
2743infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3622infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2744{ 3623{
2745 if (slot < 0) 3624 if (slot < 0)
2746 /* overflow, need to check for all hash slots */ 3625 /* overflow, need to check for all hash slots */
2747 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3626 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2748 infy_wd (EV_A_ slot, wd, ev); 3627 infy_wd (EV_A_ slot, wd, ev);
2749 else 3628 else
2750 { 3629 {
2751 WL w_; 3630 WL w_;
2752 3631
2753 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3632 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2754 { 3633 {
2755 ev_stat *w = (ev_stat *)w_; 3634 ev_stat *w = (ev_stat *)w_;
2756 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 */
2757 3636
2758 if (w->wd == wd || wd == -1) 3637 if (w->wd == wd || wd == -1)
2759 { 3638 {
2760 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3639 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2761 { 3640 {
2762 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);
2763 w->wd = -1; 3642 w->wd = -1;
2764 infy_add (EV_A_ w); /* re-add, no matter what */ 3643 infy_add (EV_A_ w); /* re-add, no matter what */
2765 } 3644 }
2766 3645
2767 stat_timer_cb (EV_A_ &w->timer, 0); 3646 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2772 3651
2773static void 3652static void
2774infy_cb (EV_P_ ev_io *w, int revents) 3653infy_cb (EV_P_ ev_io *w, int revents)
2775{ 3654{
2776 char buf [EV_INOTIFY_BUFSIZE]; 3655 char buf [EV_INOTIFY_BUFSIZE];
2777 struct inotify_event *ev = (struct inotify_event *)buf;
2778 int ofs; 3656 int ofs;
2779 int len = read (fs_fd, buf, sizeof (buf)); 3657 int len = read (fs_fd, buf, sizeof (buf));
2780 3658
2781 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);
2782 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 }
2783} 3665}
2784 3666
2785inline_size void 3667inline_size void ecb_cold
2786check_2625 (EV_P) 3668ev_check_2625 (EV_P)
2787{ 3669{
2788 /* kernels < 2.6.25 are borked 3670 /* kernels < 2.6.25 are borked
2789 * 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
2790 */ 3672 */
2791 struct utsname buf; 3673 if (ev_linux_version () < 0x020619)
2792 int major, minor, micro;
2793
2794 if (uname (&buf))
2795 return; 3674 return;
2796 3675
2797 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2798 return;
2799
2800 if (major < 2
2801 || (major == 2 && minor < 6)
2802 || (major == 2 && minor == 6 && micro < 25))
2803 return;
2804
2805 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 ();
2806} 3688}
2807 3689
2808inline_size void 3690inline_size void
2809infy_init (EV_P) 3691infy_init (EV_P)
2810{ 3692{
2811 if (fs_fd != -2) 3693 if (fs_fd != -2)
2812 return; 3694 return;
2813 3695
2814 fs_fd = -1; 3696 fs_fd = -1;
2815 3697
2816 check_2625 (EV_A); 3698 ev_check_2625 (EV_A);
2817 3699
2818 fs_fd = inotify_init (); 3700 fs_fd = infy_newfd ();
2819 3701
2820 if (fs_fd >= 0) 3702 if (fs_fd >= 0)
2821 { 3703 {
3704 fd_intern (fs_fd);
2822 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3705 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2823 ev_set_priority (&fs_w, EV_MAXPRI); 3706 ev_set_priority (&fs_w, EV_MAXPRI);
2824 ev_io_start (EV_A_ &fs_w); 3707 ev_io_start (EV_A_ &fs_w);
3708 ev_unref (EV_A);
2825 } 3709 }
2826} 3710}
2827 3711
2828inline_size void 3712inline_size void
2829infy_fork (EV_P) 3713infy_fork (EV_P)
… …
2831 int slot; 3715 int slot;
2832 3716
2833 if (fs_fd < 0) 3717 if (fs_fd < 0)
2834 return; 3718 return;
2835 3719
3720 ev_ref (EV_A);
3721 ev_io_stop (EV_A_ &fs_w);
2836 close (fs_fd); 3722 close (fs_fd);
2837 fs_fd = inotify_init (); 3723 fs_fd = infy_newfd ();
2838 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
2839 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3733 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2840 { 3734 {
2841 WL w_ = fs_hash [slot].head; 3735 WL w_ = fs_hash [slot].head;
2842 fs_hash [slot].head = 0; 3736 fs_hash [slot].head = 0;
2843 3737
2844 while (w_) 3738 while (w_)
… …
2849 w->wd = -1; 3743 w->wd = -1;
2850 3744
2851 if (fs_fd >= 0) 3745 if (fs_fd >= 0)
2852 infy_add (EV_A_ w); /* re-add, no matter what */ 3746 infy_add (EV_A_ w); /* re-add, no matter what */
2853 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);
2854 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 }
2855 } 3754 }
2856 } 3755 }
2857} 3756}
2858 3757
2859#endif 3758#endif
… …
2876static void noinline 3775static void noinline
2877stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3776stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2878{ 3777{
2879 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2880 3779
2881 /* we copy this here each the time so that */ 3780 ev_statdata prev = w->attr;
2882 /* prev has the old value when the callback gets invoked */
2883 w->prev = w->attr;
2884 ev_stat_stat (EV_A_ w); 3781 ev_stat_stat (EV_A_ w);
2885 3782
2886 /* 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 */
2887 if ( 3784 if (
2888 w->prev.st_dev != w->attr.st_dev 3785 prev.st_dev != w->attr.st_dev
2889 || w->prev.st_ino != w->attr.st_ino 3786 || prev.st_ino != w->attr.st_ino
2890 || w->prev.st_mode != w->attr.st_mode 3787 || prev.st_mode != w->attr.st_mode
2891 || w->prev.st_nlink != w->attr.st_nlink 3788 || prev.st_nlink != w->attr.st_nlink
2892 || w->prev.st_uid != w->attr.st_uid 3789 || prev.st_uid != w->attr.st_uid
2893 || w->prev.st_gid != w->attr.st_gid 3790 || prev.st_gid != w->attr.st_gid
2894 || w->prev.st_rdev != w->attr.st_rdev 3791 || prev.st_rdev != w->attr.st_rdev
2895 || w->prev.st_size != w->attr.st_size 3792 || prev.st_size != w->attr.st_size
2896 || w->prev.st_atime != w->attr.st_atime 3793 || prev.st_atime != w->attr.st_atime
2897 || w->prev.st_mtime != w->attr.st_mtime 3794 || prev.st_mtime != w->attr.st_mtime
2898 || w->prev.st_ctime != w->attr.st_ctime 3795 || prev.st_ctime != w->attr.st_ctime
2899 ) { 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
2900 #if EV_USE_INOTIFY 3802 #if EV_USE_INOTIFY
2901 if (fs_fd >= 0) 3803 if (fs_fd >= 0)
2902 { 3804 {
2903 infy_del (EV_A_ w); 3805 infy_del (EV_A_ w);
2904 infy_add (EV_A_ w); 3806 infy_add (EV_A_ w);
… …
2929 3831
2930 if (fs_fd >= 0) 3832 if (fs_fd >= 0)
2931 infy_add (EV_A_ w); 3833 infy_add (EV_A_ w);
2932 else 3834 else
2933#endif 3835#endif
3836 {
2934 ev_timer_again (EV_A_ &w->timer); 3837 ev_timer_again (EV_A_ &w->timer);
3838 ev_unref (EV_A);
3839 }
2935 3840
2936 ev_start (EV_A_ (W)w, 1); 3841 ev_start (EV_A_ (W)w, 1);
2937 3842
2938 EV_FREQUENT_CHECK; 3843 EV_FREQUENT_CHECK;
2939} 3844}
… …
2948 EV_FREQUENT_CHECK; 3853 EV_FREQUENT_CHECK;
2949 3854
2950#if EV_USE_INOTIFY 3855#if EV_USE_INOTIFY
2951 infy_del (EV_A_ w); 3856 infy_del (EV_A_ w);
2952#endif 3857#endif
3858
3859 if (ev_is_active (&w->timer))
3860 {
3861 ev_ref (EV_A);
2953 ev_timer_stop (EV_A_ &w->timer); 3862 ev_timer_stop (EV_A_ &w->timer);
3863 }
2954 3864
2955 ev_stop (EV_A_ (W)w); 3865 ev_stop (EV_A_ (W)w);
2956 3866
2957 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2958} 3868}
… …
3003 3913
3004 EV_FREQUENT_CHECK; 3914 EV_FREQUENT_CHECK;
3005} 3915}
3006#endif 3916#endif
3007 3917
3918#if EV_PREPARE_ENABLE
3008void 3919void
3009ev_prepare_start (EV_P_ ev_prepare *w) 3920ev_prepare_start (EV_P_ ev_prepare *w)
3010{ 3921{
3011 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
3012 return; 3923 return;
… …
3038 3949
3039 ev_stop (EV_A_ (W)w); 3950 ev_stop (EV_A_ (W)w);
3040 3951
3041 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
3042} 3953}
3954#endif
3043 3955
3956#if EV_CHECK_ENABLE
3044void 3957void
3045ev_check_start (EV_P_ ev_check *w) 3958ev_check_start (EV_P_ ev_check *w)
3046{ 3959{
3047 if (expect_false (ev_is_active (w))) 3960 if (expect_false (ev_is_active (w)))
3048 return; 3961 return;
… …
3074 3987
3075 ev_stop (EV_A_ (W)w); 3988 ev_stop (EV_A_ (W)w);
3076 3989
3077 EV_FREQUENT_CHECK; 3990 EV_FREQUENT_CHECK;
3078} 3991}
3992#endif
3079 3993
3080#if EV_EMBED_ENABLE 3994#if EV_EMBED_ENABLE
3081void noinline 3995void noinline
3082ev_embed_sweep (EV_P_ ev_embed *w) 3996ev_embed_sweep (EV_P_ ev_embed *w)
3083{ 3997{
3084 ev_loop (w->other, EVLOOP_NONBLOCK); 3998 ev_run (w->other, EVRUN_NOWAIT);
3085} 3999}
3086 4000
3087static void 4001static void
3088embed_io_cb (EV_P_ ev_io *io, int revents) 4002embed_io_cb (EV_P_ ev_io *io, int revents)
3089{ 4003{
3090 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4004 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3091 4005
3092 if (ev_cb (w)) 4006 if (ev_cb (w))
3093 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4007 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3094 else 4008 else
3095 ev_loop (w->other, EVLOOP_NONBLOCK); 4009 ev_run (w->other, EVRUN_NOWAIT);
3096} 4010}
3097 4011
3098static void 4012static void
3099embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4013embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3100{ 4014{
3101 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4015 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3102 4016
3103 { 4017 {
3104 struct ev_loop *loop = w->other; 4018 EV_P = w->other;
3105 4019
3106 while (fdchangecnt) 4020 while (fdchangecnt)
3107 { 4021 {
3108 fd_reify (EV_A); 4022 fd_reify (EV_A);
3109 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4023 ev_run (EV_A_ EVRUN_NOWAIT);
3110 } 4024 }
3111 } 4025 }
3112} 4026}
3113 4027
3114static void 4028static void
… …
3117 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));
3118 4032
3119 ev_embed_stop (EV_A_ w); 4033 ev_embed_stop (EV_A_ w);
3120 4034
3121 { 4035 {
3122 struct ev_loop *loop = w->other; 4036 EV_P = w->other;
3123 4037
3124 ev_loop_fork (EV_A); 4038 ev_loop_fork (EV_A);
3125 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4039 ev_run (EV_A_ EVRUN_NOWAIT);
3126 } 4040 }
3127 4041
3128 ev_embed_start (EV_A_ w); 4042 ev_embed_start (EV_A_ w);
3129} 4043}
3130 4044
… …
3141{ 4055{
3142 if (expect_false (ev_is_active (w))) 4056 if (expect_false (ev_is_active (w)))
3143 return; 4057 return;
3144 4058
3145 { 4059 {
3146 struct ev_loop *loop = w->other; 4060 EV_P = w->other;
3147 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 ()));
3148 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);
3149 } 4063 }
3150 4064
3151 EV_FREQUENT_CHECK; 4065 EV_FREQUENT_CHECK;
… …
3178 4092
3179 ev_io_stop (EV_A_ &w->io); 4093 ev_io_stop (EV_A_ &w->io);
3180 ev_prepare_stop (EV_A_ &w->prepare); 4094 ev_prepare_stop (EV_A_ &w->prepare);
3181 ev_fork_stop (EV_A_ &w->fork); 4095 ev_fork_stop (EV_A_ &w->fork);
3182 4096
4097 ev_stop (EV_A_ (W)w);
4098
3183 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
3184} 4100}
3185#endif 4101#endif
3186 4102
3187#if EV_FORK_ENABLE 4103#if EV_FORK_ENABLE
… …
3220 4136
3221 EV_FREQUENT_CHECK; 4137 EV_FREQUENT_CHECK;
3222} 4138}
3223#endif 4139#endif
3224 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
3225#if EV_ASYNC_ENABLE 4182#if EV_ASYNC_ENABLE
3226void 4183void
3227ev_async_start (EV_P_ ev_async *w) 4184ev_async_start (EV_P_ ev_async *w)
3228{ 4185{
3229 if (expect_false (ev_is_active (w))) 4186 if (expect_false (ev_is_active (w)))
3230 return; 4187 return;
3231 4188
4189 w->sent = 0;
4190
3232 evpipe_init (EV_A); 4191 evpipe_init (EV_A);
3233 4192
3234 EV_FREQUENT_CHECK; 4193 EV_FREQUENT_CHECK;
3235 4194
3236 ev_start (EV_A_ (W)w, ++asynccnt); 4195 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3263 4222
3264void 4223void
3265ev_async_send (EV_P_ ev_async *w) 4224ev_async_send (EV_P_ ev_async *w)
3266{ 4225{
3267 w->sent = 1; 4226 w->sent = 1;
3268 evpipe_write (EV_A_ &gotasync); 4227 evpipe_write (EV_A_ &async_pending);
3269} 4228}
3270#endif 4229#endif
3271 4230
3272/*****************************************************************************/ 4231/*****************************************************************************/
3273 4232
… …
3313{ 4272{
3314 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));
3315 4274
3316 if (expect_false (!once)) 4275 if (expect_false (!once))
3317 { 4276 {
3318 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3319 return; 4278 return;
3320 } 4279 }
3321 4280
3322 once->cb = cb; 4281 once->cb = cb;
3323 once->arg = arg; 4282 once->arg = arg;
… …
3338} 4297}
3339 4298
3340/*****************************************************************************/ 4299/*****************************************************************************/
3341 4300
3342#if EV_WALK_ENABLE 4301#if EV_WALK_ENABLE
3343void 4302void ecb_cold
3344ev_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))
3345{ 4304{
3346 int i, j; 4305 int i, j;
3347 ev_watcher_list *wl, *wn; 4306 ev_watcher_list *wl, *wn;
3348 4307
… …
3392 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4351 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3393#endif 4352#endif
3394 4353
3395#if EV_IDLE_ENABLE 4354#if EV_IDLE_ENABLE
3396 if (types & EV_IDLE) 4355 if (types & EV_IDLE)
3397 for (j = NUMPRI; i--; ) 4356 for (j = NUMPRI; j--; )
3398 for (i = idlecnt [j]; i--; ) 4357 for (i = idlecnt [j]; i--; )
3399 cb (EV_A_ EV_IDLE, idles [j][i]); 4358 cb (EV_A_ EV_IDLE, idles [j][i]);
3400#endif 4359#endif
3401 4360
3402#if EV_FORK_ENABLE 4361#if EV_FORK_ENABLE
… …
3410 if (types & EV_ASYNC) 4369 if (types & EV_ASYNC)
3411 for (i = asynccnt; i--; ) 4370 for (i = asynccnt; i--; )
3412 cb (EV_A_ EV_ASYNC, asyncs [i]); 4371 cb (EV_A_ EV_ASYNC, asyncs [i]);
3413#endif 4372#endif
3414 4373
4374#if EV_PREPARE_ENABLE
3415 if (types & EV_PREPARE) 4375 if (types & EV_PREPARE)
3416 for (i = preparecnt; i--; ) 4376 for (i = preparecnt; i--; )
3417#if EV_EMBED_ENABLE 4377# if EV_EMBED_ENABLE
3418 if (ev_cb (prepares [i]) != embed_prepare_cb) 4378 if (ev_cb (prepares [i]) != embed_prepare_cb)
3419#endif 4379# endif
3420 cb (EV_A_ EV_PREPARE, prepares [i]); 4380 cb (EV_A_ EV_PREPARE, prepares [i]);
4381#endif
3421 4382
4383#if EV_CHECK_ENABLE
3422 if (types & EV_CHECK) 4384 if (types & EV_CHECK)
3423 for (i = checkcnt; i--; ) 4385 for (i = checkcnt; i--; )
3424 cb (EV_A_ EV_CHECK, checks [i]); 4386 cb (EV_A_ EV_CHECK, checks [i]);
4387#endif
3425 4388
4389#if EV_SIGNAL_ENABLE
3426 if (types & EV_SIGNAL) 4390 if (types & EV_SIGNAL)
3427 for (i = 0; i < signalmax; ++i) 4391 for (i = 0; i < EV_NSIG - 1; ++i)
3428 for (wl = signals [i].head; wl; ) 4392 for (wl = signals [i].head; wl; )
3429 { 4393 {
3430 wn = wl->next; 4394 wn = wl->next;
3431 cb (EV_A_ EV_SIGNAL, wl); 4395 cb (EV_A_ EV_SIGNAL, wl);
3432 wl = wn; 4396 wl = wn;
3433 } 4397 }
4398#endif
3434 4399
4400#if EV_CHILD_ENABLE
3435 if (types & EV_CHILD) 4401 if (types & EV_CHILD)
3436 for (i = EV_PID_HASHSIZE; i--; ) 4402 for (i = (EV_PID_HASHSIZE); i--; )
3437 for (wl = childs [i]; wl; ) 4403 for (wl = childs [i]; wl; )
3438 { 4404 {
3439 wn = wl->next; 4405 wn = wl->next;
3440 cb (EV_A_ EV_CHILD, wl); 4406 cb (EV_A_ EV_CHILD, wl);
3441 wl = wn; 4407 wl = wn;
3442 } 4408 }
4409#endif
3443/* EV_STAT 0x00001000 /* stat data changed */ 4410/* EV_STAT 0x00001000 /* stat data changed */
3444/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4411/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3445} 4412}
3446#endif 4413#endif
3447 4414
3448#if EV_MULTIPLICITY 4415#if EV_MULTIPLICITY
3449 #include "ev_wrap.h" 4416 #include "ev_wrap.h"
3450#endif 4417#endif
3451 4418
3452#ifdef __cplusplus
3453}
3454#endif
3455

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