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Comparing libev/ev.c (file contents):
Revision 1.296 by root, Thu Jul 9 09:11:20 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}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 1123#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 1124#define ev_free(ptr) ev_realloc ((ptr), 0)
492 1125
493/*****************************************************************************/ 1126/*****************************************************************************/
494 1127
1128/* set in reify when reification needed */
1129#define EV_ANFD_REIFY 1
1130
495/* file descriptor info structure */ 1131/* file descriptor info structure */
496typedef struct 1132typedef struct
497{ 1133{
498 WL head; 1134 WL head;
499 unsigned char events; /* the events watched for */ 1135 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 1136 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1137 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502 unsigned char unused; 1138 unsigned char unused;
503#if EV_USE_EPOLL 1139#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 1140 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 1141#endif
506#if EV_SELECT_IS_WINSOCKET 1142#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 1143 SOCKET handle;
1144#endif
1145#if EV_USE_IOCP
1146 OVERLAPPED or, ow;
508#endif 1147#endif
509} ANFD; 1148} ANFD;
510 1149
511/* stores the pending event set for a given watcher */ 1150/* stores the pending event set for a given watcher */
512typedef struct 1151typedef struct
… …
554 #undef VAR 1193 #undef VAR
555 }; 1194 };
556 #include "ev_wrap.h" 1195 #include "ev_wrap.h"
557 1196
558 static struct ev_loop default_loop_struct; 1197 static struct ev_loop default_loop_struct;
559 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 */
560 1199
561#else 1200#else
562 1201
563 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 */
564 #define VAR(name,decl) static decl; 1203 #define VAR(name,decl) static decl;
565 #include "ev_vars.h" 1204 #include "ev_vars.h"
566 #undef VAR 1205 #undef VAR
567 1206
568 static int ev_default_loop_ptr; 1207 static int ev_default_loop_ptr;
569 1208
570#endif 1209#endif
571 1210
1211#if EV_FEATURE_API
1212# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1213# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1214# define EV_INVOKE_PENDING invoke_cb (EV_A)
1215#else
1216# define EV_RELEASE_CB (void)0
1217# define EV_ACQUIRE_CB (void)0
1218# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1219#endif
1220
1221#define EVBREAK_RECURSE 0x80
1222
572/*****************************************************************************/ 1223/*****************************************************************************/
573 1224
574#ifndef EV_HAVE_EV_TIME 1225#ifndef EV_HAVE_EV_TIME
575ev_tstamp 1226ev_tstamp
576ev_time (void) 1227ev_time (void)
… …
619 if (delay > 0.) 1270 if (delay > 0.)
620 { 1271 {
621#if EV_USE_NANOSLEEP 1272#if EV_USE_NANOSLEEP
622 struct timespec ts; 1273 struct timespec ts;
623 1274
624 ts.tv_sec = (time_t)delay; 1275 EV_TS_SET (ts, delay);
625 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
626
627 nanosleep (&ts, 0); 1276 nanosleep (&ts, 0);
628#elif defined(_WIN32) 1277#elif defined(_WIN32)
629 Sleep ((unsigned long)(delay * 1e3)); 1278 Sleep ((unsigned long)(delay * 1e3));
630#else 1279#else
631 struct timeval tv; 1280 struct timeval tv;
632 1281
633 tv.tv_sec = (time_t)delay;
634 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
635
636 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1282 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
637 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1283 /* something not guaranteed by newer posix versions, but guaranteed */
638 /* by older ones */ 1284 /* by older ones */
1285 EV_TV_SET (tv, delay);
639 select (0, 0, 0, 0, &tv); 1286 select (0, 0, 0, 0, &tv);
640#endif 1287#endif
641 } 1288 }
642} 1289}
643 1290
644/*****************************************************************************/ 1291/*****************************************************************************/
645 1292
646#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1293#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
647 1294
648/* find a suitable new size for the given array, */ 1295/* find a suitable new size for the given array, */
649/* hopefully by rounding to a ncie-to-malloc size */ 1296/* hopefully by rounding to a nice-to-malloc size */
650inline_size int 1297inline_size int
651array_nextsize (int elem, int cur, int cnt) 1298array_nextsize (int elem, int cur, int cnt)
652{ 1299{
653 int ncur = cur + 1; 1300 int ncur = cur + 1;
654 1301
655 do 1302 do
656 ncur <<= 1; 1303 ncur <<= 1;
657 while (cnt > ncur); 1304 while (cnt > ncur);
658 1305
659 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1306 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
660 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1307 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
661 { 1308 {
662 ncur *= elem; 1309 ncur *= elem;
663 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1310 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
664 ncur = ncur - sizeof (void *) * 4; 1311 ncur = ncur - sizeof (void *) * 4;
… …
666 } 1313 }
667 1314
668 return ncur; 1315 return ncur;
669} 1316}
670 1317
671static noinline void * 1318static void * noinline ecb_cold
672array_realloc (int elem, void *base, int *cur, int cnt) 1319array_realloc (int elem, void *base, int *cur, int cnt)
673{ 1320{
674 *cur = array_nextsize (elem, *cur, cnt); 1321 *cur = array_nextsize (elem, *cur, cnt);
675 return ev_realloc (base, elem * *cur); 1322 return ev_realloc (base, elem * *cur);
676} 1323}
… …
679 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1326 memset ((void *)(base), 0, sizeof (*(base)) * (count))
680 1327
681#define array_needsize(type,base,cur,cnt,init) \ 1328#define array_needsize(type,base,cur,cnt,init) \
682 if (expect_false ((cnt) > (cur))) \ 1329 if (expect_false ((cnt) > (cur))) \
683 { \ 1330 { \
684 int ocur_ = (cur); \ 1331 int ecb_unused ocur_ = (cur); \
685 (base) = (type *)array_realloc \ 1332 (base) = (type *)array_realloc \
686 (sizeof (type), (base), &(cur), (cnt)); \ 1333 (sizeof (type), (base), &(cur), (cnt)); \
687 init ((base) + (ocur_), (cur) - ocur_); \ 1334 init ((base) + (ocur_), (cur) - ocur_); \
688 } 1335 }
689 1336
… …
750} 1397}
751 1398
752/*****************************************************************************/ 1399/*****************************************************************************/
753 1400
754inline_speed void 1401inline_speed void
755fd_event (EV_P_ int fd, int revents) 1402fd_event_nocheck (EV_P_ int fd, int revents)
756{ 1403{
757 ANFD *anfd = anfds + fd; 1404 ANFD *anfd = anfds + fd;
758 ev_io *w; 1405 ev_io *w;
759 1406
760 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1407 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
764 if (ev) 1411 if (ev)
765 ev_feed_event (EV_A_ (W)w, ev); 1412 ev_feed_event (EV_A_ (W)w, ev);
766 } 1413 }
767} 1414}
768 1415
1416/* do not submit kernel events for fds that have reify set */
1417/* because that means they changed while we were polling for new events */
1418inline_speed void
1419fd_event (EV_P_ int fd, int revents)
1420{
1421 ANFD *anfd = anfds + fd;
1422
1423 if (expect_true (!anfd->reify))
1424 fd_event_nocheck (EV_A_ fd, revents);
1425}
1426
769void 1427void
770ev_feed_fd_event (EV_P_ int fd, int revents) 1428ev_feed_fd_event (EV_P_ int fd, int revents)
771{ 1429{
772 if (fd >= 0 && fd < anfdmax) 1430 if (fd >= 0 && fd < anfdmax)
773 fd_event (EV_A_ fd, revents); 1431 fd_event_nocheck (EV_A_ fd, revents);
774} 1432}
775 1433
776/* make sure the external fd watch events are in-sync */ 1434/* make sure the external fd watch events are in-sync */
777/* with the kernel/libev internal state */ 1435/* with the kernel/libev internal state */
778inline_size void 1436inline_size void
779fd_reify (EV_P) 1437fd_reify (EV_P)
780{ 1438{
781 int i; 1439 int i;
782 1440
1441#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1442 for (i = 0; i < fdchangecnt; ++i)
1443 {
1444 int fd = fdchanges [i];
1445 ANFD *anfd = anfds + fd;
1446
1447 if (anfd->reify & EV__IOFDSET && anfd->head)
1448 {
1449 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1450
1451 if (handle != anfd->handle)
1452 {
1453 unsigned long arg;
1454
1455 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1456
1457 /* handle changed, but fd didn't - we need to do it in two steps */
1458 backend_modify (EV_A_ fd, anfd->events, 0);
1459 anfd->events = 0;
1460 anfd->handle = handle;
1461 }
1462 }
1463 }
1464#endif
1465
783 for (i = 0; i < fdchangecnt; ++i) 1466 for (i = 0; i < fdchangecnt; ++i)
784 { 1467 {
785 int fd = fdchanges [i]; 1468 int fd = fdchanges [i];
786 ANFD *anfd = anfds + fd; 1469 ANFD *anfd = anfds + fd;
787 ev_io *w; 1470 ev_io *w;
788 1471
789 unsigned char events = 0; 1472 unsigned char o_events = anfd->events;
1473 unsigned char o_reify = anfd->reify;
790 1474
791 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1475 anfd->reify = 0;
792 events |= (unsigned char)w->events;
793 1476
794#if EV_SELECT_IS_WINSOCKET 1477 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
795 if (events)
796 { 1478 {
797 unsigned long arg; 1479 anfd->events = 0;
798 #ifdef EV_FD_TO_WIN32_HANDLE 1480
799 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1481 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
800 #else 1482 anfd->events |= (unsigned char)w->events;
801 anfd->handle = _get_osfhandle (fd); 1483
802 #endif 1484 if (o_events != anfd->events)
803 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1485 o_reify = EV__IOFDSET; /* actually |= */
804 } 1486 }
805#endif
806 1487
807 { 1488 if (o_reify & EV__IOFDSET)
808 unsigned char o_events = anfd->events;
809 unsigned char o_reify = anfd->reify;
810
811 anfd->reify = 0;
812 anfd->events = events;
813
814 if (o_events != events || o_reify & EV__IOFDSET)
815 backend_modify (EV_A_ fd, o_events, events); 1489 backend_modify (EV_A_ fd, o_events, anfd->events);
816 }
817 } 1490 }
818 1491
819 fdchangecnt = 0; 1492 fdchangecnt = 0;
820} 1493}
821 1494
… …
833 fdchanges [fdchangecnt - 1] = fd; 1506 fdchanges [fdchangecnt - 1] = fd;
834 } 1507 }
835} 1508}
836 1509
837/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1510/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
838inline_speed void 1511inline_speed void ecb_cold
839fd_kill (EV_P_ int fd) 1512fd_kill (EV_P_ int fd)
840{ 1513{
841 ev_io *w; 1514 ev_io *w;
842 1515
843 while ((w = (ev_io *)anfds [fd].head)) 1516 while ((w = (ev_io *)anfds [fd].head))
… …
845 ev_io_stop (EV_A_ w); 1518 ev_io_stop (EV_A_ w);
846 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1519 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
847 } 1520 }
848} 1521}
849 1522
850/* check whether the given fd is atcually valid, for error recovery */ 1523/* check whether the given fd is actually valid, for error recovery */
851inline_size int 1524inline_size int ecb_cold
852fd_valid (int fd) 1525fd_valid (int fd)
853{ 1526{
854#ifdef _WIN32 1527#ifdef _WIN32
855 return _get_osfhandle (fd) != -1; 1528 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
856#else 1529#else
857 return fcntl (fd, F_GETFD) != -1; 1530 return fcntl (fd, F_GETFD) != -1;
858#endif 1531#endif
859} 1532}
860 1533
861/* called on EBADF to verify fds */ 1534/* called on EBADF to verify fds */
862static void noinline 1535static void noinline ecb_cold
863fd_ebadf (EV_P) 1536fd_ebadf (EV_P)
864{ 1537{
865 int fd; 1538 int fd;
866 1539
867 for (fd = 0; fd < anfdmax; ++fd) 1540 for (fd = 0; fd < anfdmax; ++fd)
… …
869 if (!fd_valid (fd) && errno == EBADF) 1542 if (!fd_valid (fd) && errno == EBADF)
870 fd_kill (EV_A_ fd); 1543 fd_kill (EV_A_ fd);
871} 1544}
872 1545
873/* called on ENOMEM in select/poll to kill some fds and retry */ 1546/* called on ENOMEM in select/poll to kill some fds and retry */
874static void noinline 1547static void noinline ecb_cold
875fd_enomem (EV_P) 1548fd_enomem (EV_P)
876{ 1549{
877 int fd; 1550 int fd;
878 1551
879 for (fd = anfdmax; fd--; ) 1552 for (fd = anfdmax; fd--; )
880 if (anfds [fd].events) 1553 if (anfds [fd].events)
881 { 1554 {
882 fd_kill (EV_A_ fd); 1555 fd_kill (EV_A_ fd);
883 return; 1556 break;
884 } 1557 }
885} 1558}
886 1559
887/* usually called after fork if backend needs to re-arm all fds from scratch */ 1560/* usually called after fork if backend needs to re-arm all fds from scratch */
888static void noinline 1561static void noinline
… …
893 for (fd = 0; fd < anfdmax; ++fd) 1566 for (fd = 0; fd < anfdmax; ++fd)
894 if (anfds [fd].events) 1567 if (anfds [fd].events)
895 { 1568 {
896 anfds [fd].events = 0; 1569 anfds [fd].events = 0;
897 anfds [fd].emask = 0; 1570 anfds [fd].emask = 0;
898 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1571 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
899 } 1572 }
900} 1573}
901 1574
1575/* used to prepare libev internal fd's */
1576/* this is not fork-safe */
1577inline_speed void
1578fd_intern (int fd)
1579{
1580#ifdef _WIN32
1581 unsigned long arg = 1;
1582 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1583#else
1584 fcntl (fd, F_SETFD, FD_CLOEXEC);
1585 fcntl (fd, F_SETFL, O_NONBLOCK);
1586#endif
1587}
1588
902/*****************************************************************************/ 1589/*****************************************************************************/
903 1590
904/* 1591/*
905 * the heap functions want a real array index. array index 0 uis guaranteed to not 1592 * the heap functions want a real array index. array index 0 is guaranteed to not
906 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1593 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
907 * the branching factor of the d-tree. 1594 * the branching factor of the d-tree.
908 */ 1595 */
909 1596
910/* 1597/*
… …
978 1665
979 for (;;) 1666 for (;;)
980 { 1667 {
981 int c = k << 1; 1668 int c = k << 1;
982 1669
983 if (c > N + HEAP0 - 1) 1670 if (c >= N + HEAP0)
984 break; 1671 break;
985 1672
986 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1673 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
987 ? 1 : 0; 1674 ? 1 : 0;
988 1675
… …
1024 1711
1025/* move an element suitably so it is in a correct place */ 1712/* move an element suitably so it is in a correct place */
1026inline_size void 1713inline_size void
1027adjustheap (ANHE *heap, int N, int k) 1714adjustheap (ANHE *heap, int N, int k)
1028{ 1715{
1029 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1716 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1030 upheap (heap, k); 1717 upheap (heap, k);
1031 else 1718 else
1032 downheap (heap, N, k); 1719 downheap (heap, N, k);
1033} 1720}
1034 1721
… …
1047/*****************************************************************************/ 1734/*****************************************************************************/
1048 1735
1049/* associate signal watchers to a signal signal */ 1736/* associate signal watchers to a signal signal */
1050typedef struct 1737typedef struct
1051{ 1738{
1739 EV_ATOMIC_T pending;
1740#if EV_MULTIPLICITY
1741 EV_P;
1742#endif
1052 WL head; 1743 WL head;
1053 EV_ATOMIC_T gotsig;
1054} ANSIG; 1744} ANSIG;
1055 1745
1056static ANSIG *signals; 1746static ANSIG signals [EV_NSIG - 1];
1057static int signalmax;
1058
1059static EV_ATOMIC_T gotsig;
1060 1747
1061/*****************************************************************************/ 1748/*****************************************************************************/
1062 1749
1063/* used to prepare libev internal fd's */ 1750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1064/* this is not fork-safe */
1065inline_speed void
1066fd_intern (int fd)
1067{
1068#ifdef _WIN32
1069 unsigned long arg = 1;
1070 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1071#else
1072 fcntl (fd, F_SETFD, FD_CLOEXEC);
1073 fcntl (fd, F_SETFL, O_NONBLOCK);
1074#endif
1075}
1076 1751
1077static void noinline 1752static void noinline ecb_cold
1078evpipe_init (EV_P) 1753evpipe_init (EV_P)
1079{ 1754{
1080 if (!ev_is_active (&pipe_w)) 1755 if (!ev_is_active (&pipe_w))
1081 { 1756 {
1082#if EV_USE_EVENTFD 1757# if EV_USE_EVENTFD
1758 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1759 if (evfd < 0 && errno == EINVAL)
1083 if ((evfd = eventfd (0, 0)) >= 0) 1760 evfd = eventfd (0, 0);
1761
1762 if (evfd >= 0)
1084 { 1763 {
1085 evpipe [0] = -1; 1764 evpipe [0] = -1;
1086 fd_intern (evfd); 1765 fd_intern (evfd); /* doing it twice doesn't hurt */
1087 ev_io_set (&pipe_w, evfd, EV_READ); 1766 ev_io_set (&pipe_w, evfd, EV_READ);
1088 } 1767 }
1089 else 1768 else
1090#endif 1769# endif
1091 { 1770 {
1092 while (pipe (evpipe)) 1771 while (pipe (evpipe))
1093 ev_syserr ("(libev) error creating signal/async pipe"); 1772 ev_syserr ("(libev) error creating signal/async pipe");
1094 1773
1095 fd_intern (evpipe [0]); 1774 fd_intern (evpipe [0]);
… …
1100 ev_io_start (EV_A_ &pipe_w); 1779 ev_io_start (EV_A_ &pipe_w);
1101 ev_unref (EV_A); /* watcher should not keep loop alive */ 1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1102 } 1781 }
1103} 1782}
1104 1783
1105inline_size void 1784inline_speed void
1106evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1107{ 1786{
1108 if (!*flag) 1787 if (expect_true (*flag))
1788 return;
1789
1790 *flag = 1;
1791
1792 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1793
1794 pipe_write_skipped = 1;
1795
1796 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1797
1798 if (pipe_write_wanted)
1109 { 1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1110 int old_errno = errno; /* save errno because write might clobber it */ 1804 old_errno = errno; /* save errno because write will clobber it */
1111
1112 *flag = 1;
1113 1805
1114#if EV_USE_EVENTFD 1806#if EV_USE_EVENTFD
1115 if (evfd >= 0) 1807 if (evfd >= 0)
1116 { 1808 {
1117 uint64_t counter = 1; 1809 uint64_t counter = 1;
1118 write (evfd, &counter, sizeof (uint64_t)); 1810 write (evfd, &counter, sizeof (uint64_t));
1119 } 1811 }
1120 else 1812 else
1121#endif 1813#endif
1814 {
1815 /* win32 people keep sending patches that change this write() to send() */
1816 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1817 /* so when you think this write should be a send instead, please find out */
1818 /* where your send() is from - it's definitely not the microsoft send, and */
1819 /* tell me. thank you. */
1122 write (evpipe [1], &old_errno, 1); 1820 write (evpipe [1], &(evpipe [1]), 1);
1821 }
1123 1822
1124 errno = old_errno; 1823 errno = old_errno;
1125 } 1824 }
1126} 1825}
1127 1826
1128/* called whenever the libev signal pipe */ 1827/* called whenever the libev signal pipe */
1129/* got some events (signal, async) */ 1828/* got some events (signal, async) */
1130static void 1829static void
1131pipecb (EV_P_ ev_io *iow, int revents) 1830pipecb (EV_P_ ev_io *iow, int revents)
1132{ 1831{
1832 int i;
1833
1834 if (revents & EV_READ)
1835 {
1133#if EV_USE_EVENTFD 1836#if EV_USE_EVENTFD
1134 if (evfd >= 0) 1837 if (evfd >= 0)
1135 { 1838 {
1136 uint64_t counter; 1839 uint64_t counter;
1137 read (evfd, &counter, sizeof (uint64_t)); 1840 read (evfd, &counter, sizeof (uint64_t));
1138 } 1841 }
1139 else 1842 else
1140#endif 1843#endif
1141 { 1844 {
1142 char dummy; 1845 char dummy;
1846 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1143 read (evpipe [0], &dummy, 1); 1847 read (evpipe [0], &dummy, 1);
1848 }
1849 }
1850
1851 pipe_write_skipped = 0;
1852
1853#if EV_SIGNAL_ENABLE
1854 if (sig_pending)
1144 } 1855 {
1856 sig_pending = 0;
1145 1857
1146 if (gotsig && ev_is_default_loop (EV_A)) 1858 for (i = EV_NSIG - 1; i--; )
1147 { 1859 if (expect_false (signals [i].pending))
1148 int signum;
1149 gotsig = 0;
1150
1151 for (signum = signalmax; signum--; )
1152 if (signals [signum].gotsig)
1153 ev_feed_signal_event (EV_A_ signum + 1); 1860 ev_feed_signal_event (EV_A_ i + 1);
1154 } 1861 }
1862#endif
1155 1863
1156#if EV_ASYNC_ENABLE 1864#if EV_ASYNC_ENABLE
1157 if (gotasync) 1865 if (async_pending)
1158 { 1866 {
1159 int i; 1867 async_pending = 0;
1160 gotasync = 0;
1161 1868
1162 for (i = asynccnt; i--; ) 1869 for (i = asynccnt; i--; )
1163 if (asyncs [i]->sent) 1870 if (asyncs [i]->sent)
1164 { 1871 {
1165 asyncs [i]->sent = 0; 1872 asyncs [i]->sent = 0;
… …
1169#endif 1876#endif
1170} 1877}
1171 1878
1172/*****************************************************************************/ 1879/*****************************************************************************/
1173 1880
1881void
1882ev_feed_signal (int signum)
1883{
1884#if EV_MULTIPLICITY
1885 EV_P = signals [signum - 1].loop;
1886
1887 if (!EV_A)
1888 return;
1889#endif
1890
1891 if (!ev_active (&pipe_w))
1892 return;
1893
1894 signals [signum - 1].pending = 1;
1895 evpipe_write (EV_A_ &sig_pending);
1896}
1897
1174static void 1898static void
1175ev_sighandler (int signum) 1899ev_sighandler (int signum)
1176{ 1900{
1177#if EV_MULTIPLICITY
1178 struct ev_loop *loop = &default_loop_struct;
1179#endif
1180
1181#if _WIN32 1901#ifdef _WIN32
1182 signal (signum, ev_sighandler); 1902 signal (signum, ev_sighandler);
1183#endif 1903#endif
1184 1904
1185 signals [signum - 1].gotsig = 1; 1905 ev_feed_signal (signum);
1186 evpipe_write (EV_A_ &gotsig);
1187} 1906}
1188 1907
1189void noinline 1908void noinline
1190ev_feed_signal_event (EV_P_ int signum) 1909ev_feed_signal_event (EV_P_ int signum)
1191{ 1910{
1192 WL w; 1911 WL w;
1193 1912
1913 if (expect_false (signum <= 0 || signum > EV_NSIG))
1914 return;
1915
1916 --signum;
1917
1194#if EV_MULTIPLICITY 1918#if EV_MULTIPLICITY
1195 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1919 /* it is permissible to try to feed a signal to the wrong loop */
1196#endif 1920 /* or, likely more useful, feeding a signal nobody is waiting for */
1197 1921
1198 --signum; 1922 if (expect_false (signals [signum].loop != EV_A))
1199
1200 if (signum < 0 || signum >= signalmax)
1201 return; 1923 return;
1924#endif
1202 1925
1203 signals [signum].gotsig = 0; 1926 signals [signum].pending = 0;
1204 1927
1205 for (w = signals [signum].head; w; w = w->next) 1928 for (w = signals [signum].head; w; w = w->next)
1206 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1929 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1207} 1930}
1208 1931
1932#if EV_USE_SIGNALFD
1933static void
1934sigfdcb (EV_P_ ev_io *iow, int revents)
1935{
1936 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1937
1938 for (;;)
1939 {
1940 ssize_t res = read (sigfd, si, sizeof (si));
1941
1942 /* not ISO-C, as res might be -1, but works with SuS */
1943 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1944 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1945
1946 if (res < (ssize_t)sizeof (si))
1947 break;
1948 }
1949}
1950#endif
1951
1952#endif
1953
1209/*****************************************************************************/ 1954/*****************************************************************************/
1210 1955
1956#if EV_CHILD_ENABLE
1211static WL childs [EV_PID_HASHSIZE]; 1957static WL childs [EV_PID_HASHSIZE];
1212
1213#ifndef _WIN32
1214 1958
1215static ev_signal childev; 1959static ev_signal childev;
1216 1960
1217#ifndef WIFCONTINUED 1961#ifndef WIFCONTINUED
1218# define WIFCONTINUED(status) 0 1962# define WIFCONTINUED(status) 0
… …
1223child_reap (EV_P_ int chain, int pid, int status) 1967child_reap (EV_P_ int chain, int pid, int status)
1224{ 1968{
1225 ev_child *w; 1969 ev_child *w;
1226 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1970 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1227 1971
1228 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1972 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1229 { 1973 {
1230 if ((w->pid == pid || !w->pid) 1974 if ((w->pid == pid || !w->pid)
1231 && (!traced || (w->flags & 1))) 1975 && (!traced || (w->flags & 1)))
1232 { 1976 {
1233 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1977 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1258 /* make sure we are called again until all children have been reaped */ 2002 /* make sure we are called again until all children have been reaped */
1259 /* we need to do it this way so that the callback gets called before we continue */ 2003 /* we need to do it this way so that the callback gets called before we continue */
1260 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2004 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1261 2005
1262 child_reap (EV_A_ pid, pid, status); 2006 child_reap (EV_A_ pid, pid, status);
1263 if (EV_PID_HASHSIZE > 1) 2007 if ((EV_PID_HASHSIZE) > 1)
1264 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2008 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1265} 2009}
1266 2010
1267#endif 2011#endif
1268 2012
1269/*****************************************************************************/ 2013/*****************************************************************************/
1270 2014
2015#if EV_USE_IOCP
2016# include "ev_iocp.c"
2017#endif
1271#if EV_USE_PORT 2018#if EV_USE_PORT
1272# include "ev_port.c" 2019# include "ev_port.c"
1273#endif 2020#endif
1274#if EV_USE_KQUEUE 2021#if EV_USE_KQUEUE
1275# include "ev_kqueue.c" 2022# include "ev_kqueue.c"
… …
1282#endif 2029#endif
1283#if EV_USE_SELECT 2030#if EV_USE_SELECT
1284# include "ev_select.c" 2031# include "ev_select.c"
1285#endif 2032#endif
1286 2033
1287int 2034int ecb_cold
1288ev_version_major (void) 2035ev_version_major (void)
1289{ 2036{
1290 return EV_VERSION_MAJOR; 2037 return EV_VERSION_MAJOR;
1291} 2038}
1292 2039
1293int 2040int ecb_cold
1294ev_version_minor (void) 2041ev_version_minor (void)
1295{ 2042{
1296 return EV_VERSION_MINOR; 2043 return EV_VERSION_MINOR;
1297} 2044}
1298 2045
1299/* return true if we are running with elevated privileges and should ignore env variables */ 2046/* return true if we are running with elevated privileges and should ignore env variables */
1300int inline_size 2047int inline_size ecb_cold
1301enable_secure (void) 2048enable_secure (void)
1302{ 2049{
1303#ifdef _WIN32 2050#ifdef _WIN32
1304 return 0; 2051 return 0;
1305#else 2052#else
1306 return getuid () != geteuid () 2053 return getuid () != geteuid ()
1307 || getgid () != getegid (); 2054 || getgid () != getegid ();
1308#endif 2055#endif
1309} 2056}
1310 2057
1311unsigned int 2058unsigned int ecb_cold
1312ev_supported_backends (void) 2059ev_supported_backends (void)
1313{ 2060{
1314 unsigned int flags = 0; 2061 unsigned int flags = 0;
1315 2062
1316 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1320 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2067 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1321 2068
1322 return flags; 2069 return flags;
1323} 2070}
1324 2071
1325unsigned int 2072unsigned int ecb_cold
1326ev_recommended_backends (void) 2073ev_recommended_backends (void)
1327{ 2074{
1328 unsigned int flags = ev_supported_backends (); 2075 unsigned int flags = ev_supported_backends ();
1329 2076
1330#ifndef __NetBSD__ 2077#ifndef __NetBSD__
… …
1335#ifdef __APPLE__ 2082#ifdef __APPLE__
1336 /* only select works correctly on that "unix-certified" platform */ 2083 /* only select works correctly on that "unix-certified" platform */
1337 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2084 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1338 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2085 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1339#endif 2086#endif
2087#ifdef __FreeBSD__
2088 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2089#endif
1340 2090
1341 return flags; 2091 return flags;
1342} 2092}
1343 2093
1344unsigned int 2094unsigned int ecb_cold
1345ev_embeddable_backends (void) 2095ev_embeddable_backends (void)
1346{ 2096{
1347 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1348 2098
1349 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2099 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1350 /* please fix it and tell me how to detect the fix */ 2100 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1351 flags &= ~EVBACKEND_EPOLL; 2101 flags &= ~EVBACKEND_EPOLL;
1352 2102
1353 return flags; 2103 return flags;
1354} 2104}
1355 2105
1356unsigned int 2106unsigned int
1357ev_backend (EV_P) 2107ev_backend (EV_P)
1358{ 2108{
1359 return backend; 2109 return backend;
1360} 2110}
1361 2111
2112#if EV_FEATURE_API
1362unsigned int 2113unsigned int
1363ev_loop_count (EV_P) 2114ev_iteration (EV_P)
1364{ 2115{
1365 return loop_count; 2116 return loop_count;
1366} 2117}
1367 2118
1368unsigned int 2119unsigned int
1369ev_loop_depth (EV_P) 2120ev_depth (EV_P)
1370{ 2121{
1371 return loop_depth; 2122 return loop_depth;
1372} 2123}
1373 2124
1374void 2125void
… …
1381ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1382{ 2133{
1383 timeout_blocktime = interval; 2134 timeout_blocktime = interval;
1384} 2135}
1385 2136
2137void
2138ev_set_userdata (EV_P_ void *data)
2139{
2140 userdata = data;
2141}
2142
2143void *
2144ev_userdata (EV_P)
2145{
2146 return userdata;
2147}
2148
2149void
2150ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2151{
2152 invoke_cb = invoke_pending_cb;
2153}
2154
2155void
2156ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2157{
2158 release_cb = release;
2159 acquire_cb = acquire;
2160}
2161#endif
2162
1386/* initialise a loop structure, must be zero-initialised */ 2163/* initialise a loop structure, must be zero-initialised */
1387static void noinline 2164static void noinline ecb_cold
1388loop_init (EV_P_ unsigned int flags) 2165loop_init (EV_P_ unsigned int flags)
1389{ 2166{
1390 if (!backend) 2167 if (!backend)
1391 { 2168 {
2169 origflags = flags;
2170
1392#if EV_USE_REALTIME 2171#if EV_USE_REALTIME
1393 if (!have_realtime) 2172 if (!have_realtime)
1394 { 2173 {
1395 struct timespec ts; 2174 struct timespec ts;
1396 2175
… …
1407 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2186 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1408 have_monotonic = 1; 2187 have_monotonic = 1;
1409 } 2188 }
1410#endif 2189#endif
1411 2190
1412 ev_rt_now = ev_time ();
1413 mn_now = get_clock ();
1414 now_floor = mn_now;
1415 rtmn_diff = ev_rt_now - mn_now;
1416 invoke_cb = ev_invoke_pending;
1417
1418 io_blocktime = 0.;
1419 timeout_blocktime = 0.;
1420 backend = 0;
1421 backend_fd = -1;
1422 gotasync = 0;
1423#if EV_USE_INOTIFY
1424 fs_fd = -2;
1425#endif
1426
1427 /* pid check not overridable via env */ 2191 /* pid check not overridable via env */
1428#ifndef _WIN32 2192#ifndef _WIN32
1429 if (flags & EVFLAG_FORKCHECK) 2193 if (flags & EVFLAG_FORKCHECK)
1430 curpid = getpid (); 2194 curpid = getpid ();
1431#endif 2195#endif
… …
1433 if (!(flags & EVFLAG_NOENV) 2197 if (!(flags & EVFLAG_NOENV)
1434 && !enable_secure () 2198 && !enable_secure ()
1435 && getenv ("LIBEV_FLAGS")) 2199 && getenv ("LIBEV_FLAGS"))
1436 flags = atoi (getenv ("LIBEV_FLAGS")); 2200 flags = atoi (getenv ("LIBEV_FLAGS"));
1437 2201
1438 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))
1439 flags |= ev_recommended_backends (); 2228 flags |= ev_recommended_backends ();
1440 2229
2230#if EV_USE_IOCP
2231 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2232#endif
1441#if EV_USE_PORT 2233#if EV_USE_PORT
1442 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2234 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1443#endif 2235#endif
1444#if EV_USE_KQUEUE 2236#if EV_USE_KQUEUE
1445 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2237 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1454 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2246 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1455#endif 2247#endif
1456 2248
1457 ev_prepare_init (&pending_w, pendingcb); 2249 ev_prepare_init (&pending_w, pendingcb);
1458 2250
2251#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1459 ev_init (&pipe_w, pipecb); 2252 ev_init (&pipe_w, pipecb);
1460 ev_set_priority (&pipe_w, EV_MAXPRI); 2253 ev_set_priority (&pipe_w, EV_MAXPRI);
2254#endif
1461 } 2255 }
1462} 2256}
1463 2257
1464/* free up a loop structure */ 2258/* free up a loop structure */
1465static void noinline 2259void ecb_cold
1466loop_destroy (EV_P) 2260ev_loop_destroy (EV_P)
1467{ 2261{
1468 int i; 2262 int i;
1469 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
1470 if (ev_is_active (&pipe_w)) 2287 if (ev_is_active (&pipe_w))
1471 { 2288 {
1472 ev_ref (EV_A); /* signal watcher */ 2289 /*ev_ref (EV_A);*/
1473 ev_io_stop (EV_A_ &pipe_w); 2290 /*ev_io_stop (EV_A_ &pipe_w);*/
1474 2291
1475#if EV_USE_EVENTFD 2292#if EV_USE_EVENTFD
1476 if (evfd >= 0) 2293 if (evfd >= 0)
1477 close (evfd); 2294 close (evfd);
1478#endif 2295#endif
1479 2296
1480 if (evpipe [0] >= 0) 2297 if (evpipe [0] >= 0)
1481 { 2298 {
1482 close (evpipe [0]); 2299 EV_WIN32_CLOSE_FD (evpipe [0]);
1483 close (evpipe [1]); 2300 EV_WIN32_CLOSE_FD (evpipe [1]);
1484 } 2301 }
1485 } 2302 }
2303
2304#if EV_USE_SIGNALFD
2305 if (ev_is_active (&sigfd_w))
2306 close (sigfd);
2307#endif
1486 2308
1487#if EV_USE_INOTIFY 2309#if EV_USE_INOTIFY
1488 if (fs_fd >= 0) 2310 if (fs_fd >= 0)
1489 close (fs_fd); 2311 close (fs_fd);
1490#endif 2312#endif
1491 2313
1492 if (backend_fd >= 0) 2314 if (backend_fd >= 0)
1493 close (backend_fd); 2315 close (backend_fd);
1494 2316
2317#if EV_USE_IOCP
2318 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2319#endif
1495#if EV_USE_PORT 2320#if EV_USE_PORT
1496 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2321 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1497#endif 2322#endif
1498#if EV_USE_KQUEUE 2323#if EV_USE_KQUEUE
1499 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2324 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1514#if EV_IDLE_ENABLE 2339#if EV_IDLE_ENABLE
1515 array_free (idle, [i]); 2340 array_free (idle, [i]);
1516#endif 2341#endif
1517 } 2342 }
1518 2343
1519 ev_free (anfds); anfdmax = 0; 2344 ev_free (anfds); anfds = 0; anfdmax = 0;
1520 2345
1521 /* have to use the microsoft-never-gets-it-right macro */ 2346 /* have to use the microsoft-never-gets-it-right macro */
1522 array_free (rfeed, EMPTY); 2347 array_free (rfeed, EMPTY);
1523 array_free (fdchange, EMPTY); 2348 array_free (fdchange, EMPTY);
1524 array_free (timer, EMPTY); 2349 array_free (timer, EMPTY);
… …
1526 array_free (periodic, EMPTY); 2351 array_free (periodic, EMPTY);
1527#endif 2352#endif
1528#if EV_FORK_ENABLE 2353#if EV_FORK_ENABLE
1529 array_free (fork, EMPTY); 2354 array_free (fork, EMPTY);
1530#endif 2355#endif
2356#if EV_CLEANUP_ENABLE
2357 array_free (cleanup, EMPTY);
2358#endif
1531 array_free (prepare, EMPTY); 2359 array_free (prepare, EMPTY);
1532 array_free (check, EMPTY); 2360 array_free (check, EMPTY);
1533#if EV_ASYNC_ENABLE 2361#if EV_ASYNC_ENABLE
1534 array_free (async, EMPTY); 2362 array_free (async, EMPTY);
1535#endif 2363#endif
1536 2364
1537 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
1538} 2375}
1539 2376
1540#if EV_USE_INOTIFY 2377#if EV_USE_INOTIFY
1541inline_size void infy_fork (EV_P); 2378inline_size void infy_fork (EV_P);
1542#endif 2379#endif
… …
1557 infy_fork (EV_A); 2394 infy_fork (EV_A);
1558#endif 2395#endif
1559 2396
1560 if (ev_is_active (&pipe_w)) 2397 if (ev_is_active (&pipe_w))
1561 { 2398 {
1562 /* this "locks" the handlers against writing to the pipe */ 2399 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1563 /* while we modify the fd vars */
1564 gotsig = 1;
1565#if EV_ASYNC_ENABLE
1566 gotasync = 1;
1567#endif
1568 2400
1569 ev_ref (EV_A); 2401 ev_ref (EV_A);
1570 ev_io_stop (EV_A_ &pipe_w); 2402 ev_io_stop (EV_A_ &pipe_w);
1571 2403
1572#if EV_USE_EVENTFD 2404#if EV_USE_EVENTFD
… …
1574 close (evfd); 2406 close (evfd);
1575#endif 2407#endif
1576 2408
1577 if (evpipe [0] >= 0) 2409 if (evpipe [0] >= 0)
1578 { 2410 {
1579 close (evpipe [0]); 2411 EV_WIN32_CLOSE_FD (evpipe [0]);
1580 close (evpipe [1]); 2412 EV_WIN32_CLOSE_FD (evpipe [1]);
1581 } 2413 }
1582 2414
2415#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1583 evpipe_init (EV_A); 2416 evpipe_init (EV_A);
1584 /* now iterate over everything, in case we missed something */ 2417 /* now iterate over everything, in case we missed something */
1585 pipecb (EV_A_ &pipe_w, EV_READ); 2418 pipecb (EV_A_ &pipe_w, EV_READ);
2419#endif
1586 } 2420 }
1587 2421
1588 postfork = 0; 2422 postfork = 0;
1589} 2423}
1590 2424
1591#if EV_MULTIPLICITY 2425#if EV_MULTIPLICITY
1592 2426
1593struct ev_loop * 2427struct ev_loop * ecb_cold
1594ev_loop_new (unsigned int flags) 2428ev_loop_new (unsigned int flags)
1595{ 2429{
1596 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));
1597 2431
1598 memset (loop, 0, sizeof (struct ev_loop)); 2432 memset (EV_A, 0, sizeof (struct ev_loop));
1599
1600 loop_init (EV_A_ flags); 2433 loop_init (EV_A_ flags);
1601 2434
1602 if (ev_backend (EV_A)) 2435 if (ev_backend (EV_A))
1603 return loop; 2436 return EV_A;
1604 2437
2438 ev_free (EV_A);
1605 return 0; 2439 return 0;
1606} 2440}
1607 2441
1608void 2442#endif /* multiplicity */
1609ev_loop_destroy (EV_P)
1610{
1611 loop_destroy (EV_A);
1612 ev_free (loop);
1613}
1614
1615void
1616ev_loop_fork (EV_P)
1617{
1618 postfork = 1; /* must be in line with ev_default_fork */
1619}
1620 2443
1621#if EV_VERIFY 2444#if EV_VERIFY
1622static void noinline 2445static void noinline ecb_cold
1623verify_watcher (EV_P_ W w) 2446verify_watcher (EV_P_ W w)
1624{ 2447{
1625 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));
1626 2449
1627 if (w->pending) 2450 if (w->pending)
1628 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));
1629} 2452}
1630 2453
1631static void noinline 2454static void noinline ecb_cold
1632verify_heap (EV_P_ ANHE *heap, int N) 2455verify_heap (EV_P_ ANHE *heap, int N)
1633{ 2456{
1634 int i; 2457 int i;
1635 2458
1636 for (i = HEAP0; i < N + HEAP0; ++i) 2459 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1641 2464
1642 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2465 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1643 } 2466 }
1644} 2467}
1645 2468
1646static void noinline 2469static void noinline ecb_cold
1647array_verify (EV_P_ W *ws, int cnt) 2470array_verify (EV_P_ W *ws, int cnt)
1648{ 2471{
1649 while (cnt--) 2472 while (cnt--)
1650 { 2473 {
1651 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2474 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1652 verify_watcher (EV_A_ ws [cnt]); 2475 verify_watcher (EV_A_ ws [cnt]);
1653 } 2476 }
1654} 2477}
1655#endif 2478#endif
1656 2479
1657void 2480#if EV_FEATURE_API
2481void ecb_cold
1658ev_loop_verify (EV_P) 2482ev_verify (EV_P)
1659{ 2483{
1660#if EV_VERIFY 2484#if EV_VERIFY
1661 int i; 2485 int i;
1662 WL w; 2486 WL w;
1663 2487
… …
1697#if EV_FORK_ENABLE 2521#if EV_FORK_ENABLE
1698 assert (forkmax >= forkcnt); 2522 assert (forkmax >= forkcnt);
1699 array_verify (EV_A_ (W *)forks, forkcnt); 2523 array_verify (EV_A_ (W *)forks, forkcnt);
1700#endif 2524#endif
1701 2525
2526#if EV_CLEANUP_ENABLE
2527 assert (cleanupmax >= cleanupcnt);
2528 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2529#endif
2530
1702#if EV_ASYNC_ENABLE 2531#if EV_ASYNC_ENABLE
1703 assert (asyncmax >= asynccnt); 2532 assert (asyncmax >= asynccnt);
1704 array_verify (EV_A_ (W *)asyncs, asynccnt); 2533 array_verify (EV_A_ (W *)asyncs, asynccnt);
1705#endif 2534#endif
1706 2535
2536#if EV_PREPARE_ENABLE
1707 assert (preparemax >= preparecnt); 2537 assert (preparemax >= preparecnt);
1708 array_verify (EV_A_ (W *)prepares, preparecnt); 2538 array_verify (EV_A_ (W *)prepares, preparecnt);
2539#endif
1709 2540
2541#if EV_CHECK_ENABLE
1710 assert (checkmax >= checkcnt); 2542 assert (checkmax >= checkcnt);
1711 array_verify (EV_A_ (W *)checks, checkcnt); 2543 array_verify (EV_A_ (W *)checks, checkcnt);
2544#endif
1712 2545
1713# if 0 2546# if 0
2547#if EV_CHILD_ENABLE
1714 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)
1715 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2549 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2550#endif
1716# endif 2551# endif
1717#endif 2552#endif
1718} 2553}
1719 2554#endif
1720#endif /* multiplicity */
1721 2555
1722#if EV_MULTIPLICITY 2556#if EV_MULTIPLICITY
1723struct ev_loop * 2557struct ev_loop * ecb_cold
1724ev_default_loop_init (unsigned int flags)
1725#else 2558#else
1726int 2559int
2560#endif
1727ev_default_loop (unsigned int flags) 2561ev_default_loop (unsigned int flags)
1728#endif
1729{ 2562{
1730 if (!ev_default_loop_ptr) 2563 if (!ev_default_loop_ptr)
1731 { 2564 {
1732#if EV_MULTIPLICITY 2565#if EV_MULTIPLICITY
1733 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2566 EV_P = ev_default_loop_ptr = &default_loop_struct;
1734#else 2567#else
1735 ev_default_loop_ptr = 1; 2568 ev_default_loop_ptr = 1;
1736#endif 2569#endif
1737 2570
1738 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1739 2572
1740 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1741 { 2574 {
1742#ifndef _WIN32 2575#if EV_CHILD_ENABLE
1743 ev_signal_init (&childev, childcb, SIGCHLD); 2576 ev_signal_init (&childev, childcb, SIGCHLD);
1744 ev_set_priority (&childev, EV_MAXPRI); 2577 ev_set_priority (&childev, EV_MAXPRI);
1745 ev_signal_start (EV_A_ &childev); 2578 ev_signal_start (EV_A_ &childev);
1746 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2579 ev_unref (EV_A); /* child watcher should not keep loop alive */
1747#endif 2580#endif
… …
1752 2585
1753 return ev_default_loop_ptr; 2586 return ev_default_loop_ptr;
1754} 2587}
1755 2588
1756void 2589void
1757ev_default_destroy (void) 2590ev_loop_fork (EV_P)
1758{ 2591{
1759#if EV_MULTIPLICITY
1760 struct ev_loop *loop = ev_default_loop_ptr;
1761#endif
1762
1763 ev_default_loop_ptr = 0;
1764
1765#ifndef _WIN32
1766 ev_ref (EV_A); /* child watcher */
1767 ev_signal_stop (EV_A_ &childev);
1768#endif
1769
1770 loop_destroy (EV_A);
1771}
1772
1773void
1774ev_default_fork (void)
1775{
1776#if EV_MULTIPLICITY
1777 struct ev_loop *loop = ev_default_loop_ptr;
1778#endif
1779
1780 postfork = 1; /* must be in line with ev_loop_fork */ 2592 postfork = 1; /* must be in line with ev_default_fork */
1781} 2593}
1782 2594
1783/*****************************************************************************/ 2595/*****************************************************************************/
1784 2596
1785void 2597void
1786ev_invoke (EV_P_ void *w, int revents) 2598ev_invoke (EV_P_ void *w, int revents)
1787{ 2599{
1788 EV_CB_INVOKE ((W)w, revents); 2600 EV_CB_INVOKE ((W)w, revents);
1789} 2601}
1790 2602
1791void 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;
2613}
2614
2615void noinline
1792ev_invoke_pending (EV_P) 2616ev_invoke_pending (EV_P)
1793{ 2617{
1794 int pri; 2618 int pri;
1795 2619
1796 for (pri = NUMPRI; pri--; ) 2620 for (pri = NUMPRI; pri--; )
1797 while (pendingcnt [pri]) 2621 while (pendingcnt [pri])
1798 { 2622 {
1799 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2623 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1800
1801 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1802 /* ^ this is no longer true, as pending_w could be here */
1803 2624
1804 p->w->pending = 0; 2625 p->w->pending = 0;
1805 EV_CB_INVOKE (p->w, p->events); 2626 EV_CB_INVOKE (p->w, p->events);
1806 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
1807 } 2628 }
… …
1864 EV_FREQUENT_CHECK; 2685 EV_FREQUENT_CHECK;
1865 feed_reverse (EV_A_ (W)w); 2686 feed_reverse (EV_A_ (W)w);
1866 } 2687 }
1867 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2688 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1868 2689
1869 feed_reverse_done (EV_A_ EV_TIMEOUT); 2690 feed_reverse_done (EV_A_ EV_TIMER);
1870 } 2691 }
1871} 2692}
1872 2693
1873#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
1874/* make periodics pending */ 2720/* make periodics pending */
1875inline_size void 2721inline_size void
1876periodics_reify (EV_P) 2722periodics_reify (EV_P)
1877{ 2723{
1878 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
… …
1897 ANHE_at_cache (periodics [HEAP0]); 2743 ANHE_at_cache (periodics [HEAP0]);
1898 downheap (periodics, periodiccnt, HEAP0); 2744 downheap (periodics, periodiccnt, HEAP0);
1899 } 2745 }
1900 else if (w->interval) 2746 else if (w->interval)
1901 { 2747 {
1902 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2748 periodic_recalc (EV_A_ w);
1903 /* if next trigger time is not sufficiently in the future, put it there */
1904 /* this might happen because of floating point inexactness */
1905 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1906 {
1907 ev_at (w) += w->interval;
1908
1909 /* if interval is unreasonably low we might still have a time in the past */
1910 /* so correct this. this will make the periodic very inexact, but the user */
1911 /* has effectively asked to get triggered more often than possible */
1912 if (ev_at (w) < ev_rt_now)
1913 ev_at (w) = ev_rt_now;
1914 }
1915
1916 ANHE_at_cache (periodics [HEAP0]); 2749 ANHE_at_cache (periodics [HEAP0]);
1917 downheap (periodics, periodiccnt, HEAP0); 2750 downheap (periodics, periodiccnt, HEAP0);
1918 } 2751 }
1919 else 2752 else
1920 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2753 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1927 feed_reverse_done (EV_A_ EV_PERIODIC); 2760 feed_reverse_done (EV_A_ EV_PERIODIC);
1928 } 2761 }
1929} 2762}
1930 2763
1931/* simply recalculate all periodics */ 2764/* simply recalculate all periodics */
1932/* 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? */
1933static void noinline 2766static void noinline ecb_cold
1934periodics_reschedule (EV_P) 2767periodics_reschedule (EV_P)
1935{ 2768{
1936 int i; 2769 int i;
1937 2770
1938 /* adjust periodics after time jump */ 2771 /* adjust periodics after time jump */
… …
1941 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2774 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1942 2775
1943 if (w->reschedule_cb) 2776 if (w->reschedule_cb)
1944 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2777 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1945 else if (w->interval) 2778 else if (w->interval)
1946 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2779 periodic_recalc (EV_A_ w);
1947 2780
1948 ANHE_at_cache (periodics [i]); 2781 ANHE_at_cache (periodics [i]);
1949 } 2782 }
1950 2783
1951 reheap (periodics, periodiccnt); 2784 reheap (periodics, periodiccnt);
1952} 2785}
1953#endif 2786#endif
1954 2787
1955/* adjust all timers by a given offset */ 2788/* adjust all timers by a given offset */
1956static void noinline 2789static void noinline ecb_cold
1957timers_reschedule (EV_P_ ev_tstamp adjust) 2790timers_reschedule (EV_P_ ev_tstamp adjust)
1958{ 2791{
1959 int i; 2792 int i;
1960 2793
1961 for (i = 0; i < timercnt; ++i) 2794 for (i = 0; i < timercnt; ++i)
… …
1965 ANHE_at_cache (*he); 2798 ANHE_at_cache (*he);
1966 } 2799 }
1967} 2800}
1968 2801
1969/* fetch new monotonic and realtime times from the kernel */ 2802/* fetch new monotonic and realtime times from the kernel */
1970/* also detetc if there was a timejump, and act accordingly */ 2803/* also detect if there was a timejump, and act accordingly */
1971inline_speed void 2804inline_speed void
1972time_update (EV_P_ ev_tstamp max_block) 2805time_update (EV_P_ ev_tstamp max_block)
1973{ 2806{
1974#if EV_USE_MONOTONIC 2807#if EV_USE_MONOTONIC
1975 if (expect_true (have_monotonic)) 2808 if (expect_true (have_monotonic))
… …
1998 * 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
1999 * in the unlikely event of having been preempted here. 2832 * in the unlikely event of having been preempted here.
2000 */ 2833 */
2001 for (i = 4; --i; ) 2834 for (i = 4; --i; )
2002 { 2835 {
2836 ev_tstamp diff;
2003 rtmn_diff = ev_rt_now - mn_now; 2837 rtmn_diff = ev_rt_now - mn_now;
2004 2838
2839 diff = odiff - rtmn_diff;
2840
2005 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2841 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2006 return; /* all is well */ 2842 return; /* all is well */
2007 2843
2008 ev_rt_now = ev_time (); 2844 ev_rt_now = ev_time ();
2009 mn_now = get_clock (); 2845 mn_now = get_clock ();
2010 now_floor = mn_now; 2846 now_floor = mn_now;
… …
2033 mn_now = ev_rt_now; 2869 mn_now = ev_rt_now;
2034 } 2870 }
2035} 2871}
2036 2872
2037void 2873void
2038ev_loop (EV_P_ int flags) 2874ev_run (EV_P_ int flags)
2039{ 2875{
2876#if EV_FEATURE_API
2040 ++loop_depth; 2877 ++loop_depth;
2878#endif
2041 2879
2880 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2881
2042 loop_done = EVUNLOOP_CANCEL; 2882 loop_done = EVBREAK_CANCEL;
2043 2883
2044 invoke_cb (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2884 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2045 2885
2046 do 2886 do
2047 { 2887 {
2048#if EV_VERIFY >= 2 2888#if EV_VERIFY >= 2
2049 ev_loop_verify (EV_A); 2889 ev_verify (EV_A);
2050#endif 2890#endif
2051 2891
2052#ifndef _WIN32 2892#ifndef _WIN32
2053 if (expect_false (curpid)) /* penalise the forking check even more */ 2893 if (expect_false (curpid)) /* penalise the forking check even more */
2054 if (expect_false (getpid () != curpid)) 2894 if (expect_false (getpid () != curpid))
… …
2062 /* we might have forked, so queue fork handlers */ 2902 /* we might have forked, so queue fork handlers */
2063 if (expect_false (postfork)) 2903 if (expect_false (postfork))
2064 if (forkcnt) 2904 if (forkcnt)
2065 { 2905 {
2066 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2906 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2067 invoke_cb (EV_A); 2907 EV_INVOKE_PENDING;
2068 } 2908 }
2069#endif 2909#endif
2070 2910
2911#if EV_PREPARE_ENABLE
2071 /* queue prepare watchers (and execute them) */ 2912 /* queue prepare watchers (and execute them) */
2072 if (expect_false (preparecnt)) 2913 if (expect_false (preparecnt))
2073 { 2914 {
2074 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2915 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2075 invoke_cb (EV_A); 2916 EV_INVOKE_PENDING;
2076 } 2917 }
2918#endif
2919
2920 if (expect_false (loop_done))
2921 break;
2077 2922
2078 /* we might have forked, so reify kernel state if necessary */ 2923 /* we might have forked, so reify kernel state if necessary */
2079 if (expect_false (postfork)) 2924 if (expect_false (postfork))
2080 loop_fork (EV_A); 2925 loop_fork (EV_A);
2081 2926
… …
2085 /* calculate blocking time */ 2930 /* calculate blocking time */
2086 { 2931 {
2087 ev_tstamp waittime = 0.; 2932 ev_tstamp waittime = 0.;
2088 ev_tstamp sleeptime = 0.; 2933 ev_tstamp sleeptime = 0.;
2089 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
2090 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2946 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2091 { 2947 {
2092 /* remember old timestamp for io_blocktime calculation */
2093 ev_tstamp prev_mn_now = mn_now;
2094
2095 /* update time to cancel out callback processing overhead */
2096 time_update (EV_A_ 1e100);
2097
2098 waittime = MAX_BLOCKTIME; 2948 waittime = MAX_BLOCKTIME;
2099 2949
2100 if (timercnt) 2950 if (timercnt)
2101 { 2951 {
2102 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2952 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2103 if (waittime > to) waittime = to; 2953 if (waittime > to) waittime = to;
2104 } 2954 }
2105 2955
2106#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
2107 if (periodiccnt) 2957 if (periodiccnt)
2108 { 2958 {
2109 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2959 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2110 if (waittime > to) waittime = to; 2960 if (waittime > to) waittime = to;
2111 } 2961 }
2112#endif 2962#endif
2113 2963
2114 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2964 /* don't let timeouts decrease the waittime below timeout_blocktime */
2115 if (expect_false (waittime < timeout_blocktime)) 2965 if (expect_false (waittime < timeout_blocktime))
2116 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;
2117 2972
2118 /* extra check because io_blocktime is commonly 0 */ 2973 /* extra check because io_blocktime is commonly 0 */
2119 if (expect_false (io_blocktime)) 2974 if (expect_false (io_blocktime))
2120 { 2975 {
2121 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2976 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2122 2977
2123 if (sleeptime > waittime - backend_fudge) 2978 if (sleeptime > waittime - backend_mintime)
2124 sleeptime = waittime - backend_fudge; 2979 sleeptime = waittime - backend_mintime;
2125 2980
2126 if (expect_true (sleeptime > 0.)) 2981 if (expect_true (sleeptime > 0.))
2127 { 2982 {
2128 ev_sleep (sleeptime); 2983 ev_sleep (sleeptime);
2129 waittime -= sleeptime; 2984 waittime -= sleeptime;
2130 } 2985 }
2131 } 2986 }
2132 } 2987 }
2133 2988
2989#if EV_FEATURE_API
2134 ++loop_count; 2990 ++loop_count;
2991#endif
2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2135 backend_poll (EV_A_ waittime); 2993 backend_poll (EV_A_ waittime);
2994 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2995
2996 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2997
2998 if (pipe_write_skipped)
2999 {
3000 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3001 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3002 }
3003
2136 3004
2137 /* update ev_rt_now, do magic */ 3005 /* update ev_rt_now, do magic */
2138 time_update (EV_A_ waittime + sleeptime); 3006 time_update (EV_A_ waittime + sleeptime);
2139 } 3007 }
2140 3008
… …
2147#if EV_IDLE_ENABLE 3015#if EV_IDLE_ENABLE
2148 /* queue idle watchers unless other events are pending */ 3016 /* queue idle watchers unless other events are pending */
2149 idle_reify (EV_A); 3017 idle_reify (EV_A);
2150#endif 3018#endif
2151 3019
3020#if EV_CHECK_ENABLE
2152 /* queue check watchers, to be executed first */ 3021 /* queue check watchers, to be executed first */
2153 if (expect_false (checkcnt)) 3022 if (expect_false (checkcnt))
2154 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3024#endif
2155 3025
2156 invoke_cb (EV_A); 3026 EV_INVOKE_PENDING;
2157 } 3027 }
2158 while (expect_true ( 3028 while (expect_true (
2159 activecnt 3029 activecnt
2160 && !loop_done 3030 && !loop_done
2161 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3031 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2162 )); 3032 ));
2163 3033
2164 if (loop_done == EVUNLOOP_ONE) 3034 if (loop_done == EVBREAK_ONE)
2165 loop_done = EVUNLOOP_CANCEL; 3035 loop_done = EVBREAK_CANCEL;
2166 3036
3037#if EV_FEATURE_API
2167 --loop_depth; 3038 --loop_depth;
3039#endif
2168} 3040}
2169 3041
2170void 3042void
2171ev_unloop (EV_P_ int how) 3043ev_break (EV_P_ int how)
2172{ 3044{
2173 loop_done = how; 3045 loop_done = how;
2174} 3046}
2175 3047
2176void 3048void
… …
2223inline_size void 3095inline_size void
2224wlist_del (WL *head, WL elem) 3096wlist_del (WL *head, WL elem)
2225{ 3097{
2226 while (*head) 3098 while (*head)
2227 { 3099 {
2228 if (*head == elem) 3100 if (expect_true (*head == elem))
2229 { 3101 {
2230 *head = elem->next; 3102 *head = elem->next;
2231 return; 3103 break;
2232 } 3104 }
2233 3105
2234 head = &(*head)->next; 3106 head = &(*head)->next;
2235 } 3107 }
2236} 3108}
… …
2296 3168
2297 if (expect_false (ev_is_active (w))) 3169 if (expect_false (ev_is_active (w)))
2298 return; 3170 return;
2299 3171
2300 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3172 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2301 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))));
2302 3174
2303 EV_FREQUENT_CHECK; 3175 EV_FREQUENT_CHECK;
2304 3176
2305 ev_start (EV_A_ (W)w, 1); 3177 ev_start (EV_A_ (W)w, 1);
2306 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3178 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2307 wlist_add (&anfds[fd].head, (WL)w); 3179 wlist_add (&anfds[fd].head, (WL)w);
2308 3180
2309 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3181 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2310 w->events &= ~EV__IOFDSET; 3182 w->events &= ~EV__IOFDSET;
2311 3183
2312 EV_FREQUENT_CHECK; 3184 EV_FREQUENT_CHECK;
2313} 3185}
2314 3186
… …
2324 EV_FREQUENT_CHECK; 3196 EV_FREQUENT_CHECK;
2325 3197
2326 wlist_del (&anfds[w->fd].head, (WL)w); 3198 wlist_del (&anfds[w->fd].head, (WL)w);
2327 ev_stop (EV_A_ (W)w); 3199 ev_stop (EV_A_ (W)w);
2328 3200
2329 fd_change (EV_A_ w->fd, 1); 3201 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2330 3202
2331 EV_FREQUENT_CHECK; 3203 EV_FREQUENT_CHECK;
2332} 3204}
2333 3205
2334void noinline 3206void noinline
… …
2376 timers [active] = timers [timercnt + HEAP0]; 3248 timers [active] = timers [timercnt + HEAP0];
2377 adjustheap (timers, timercnt, active); 3249 adjustheap (timers, timercnt, active);
2378 } 3250 }
2379 } 3251 }
2380 3252
2381 EV_FREQUENT_CHECK;
2382
2383 ev_at (w) -= mn_now; 3253 ev_at (w) -= mn_now;
2384 3254
2385 ev_stop (EV_A_ (W)w); 3255 ev_stop (EV_A_ (W)w);
3256
3257 EV_FREQUENT_CHECK;
2386} 3258}
2387 3259
2388void noinline 3260void noinline
2389ev_timer_again (EV_P_ ev_timer *w) 3261ev_timer_again (EV_P_ ev_timer *w)
2390{ 3262{
… …
2408 } 3280 }
2409 3281
2410 EV_FREQUENT_CHECK; 3282 EV_FREQUENT_CHECK;
2411} 3283}
2412 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
2413#if EV_PERIODIC_ENABLE 3291#if EV_PERIODIC_ENABLE
2414void noinline 3292void noinline
2415ev_periodic_start (EV_P_ ev_periodic *w) 3293ev_periodic_start (EV_P_ ev_periodic *w)
2416{ 3294{
2417 if (expect_false (ev_is_active (w))) 3295 if (expect_false (ev_is_active (w)))
… …
2420 if (w->reschedule_cb) 3298 if (w->reschedule_cb)
2421 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3299 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2422 else if (w->interval) 3300 else if (w->interval)
2423 { 3301 {
2424 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.));
2425 /* this formula differs from the one in periodic_reify because we do not always round up */ 3303 periodic_recalc (EV_A_ w);
2426 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2427 } 3304 }
2428 else 3305 else
2429 ev_at (w) = w->offset; 3306 ev_at (w) = w->offset;
2430 3307
2431 EV_FREQUENT_CHECK; 3308 EV_FREQUENT_CHECK;
… …
2463 periodics [active] = periodics [periodiccnt + HEAP0]; 3340 periodics [active] = periodics [periodiccnt + HEAP0];
2464 adjustheap (periodics, periodiccnt, active); 3341 adjustheap (periodics, periodiccnt, active);
2465 } 3342 }
2466 } 3343 }
2467 3344
2468 EV_FREQUENT_CHECK;
2469
2470 ev_stop (EV_A_ (W)w); 3345 ev_stop (EV_A_ (W)w);
3346
3347 EV_FREQUENT_CHECK;
2471} 3348}
2472 3349
2473void noinline 3350void noinline
2474ev_periodic_again (EV_P_ ev_periodic *w) 3351ev_periodic_again (EV_P_ ev_periodic *w)
2475{ 3352{
… …
2481 3358
2482#ifndef SA_RESTART 3359#ifndef SA_RESTART
2483# define SA_RESTART 0 3360# define SA_RESTART 0
2484#endif 3361#endif
2485 3362
3363#if EV_SIGNAL_ENABLE
3364
2486void noinline 3365void noinline
2487ev_signal_start (EV_P_ ev_signal *w) 3366ev_signal_start (EV_P_ ev_signal *w)
2488{ 3367{
2489#if EV_MULTIPLICITY
2490 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2491#endif
2492 if (expect_false (ev_is_active (w))) 3368 if (expect_false (ev_is_active (w)))
2493 return; 3369 return;
2494 3370
2495 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));
2496 3372
2497 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));
2498 3376
2499 EV_FREQUENT_CHECK; 3377 signals [w->signum - 1].loop = EV_A;
3378#endif
2500 3379
3380 EV_FREQUENT_CHECK;
3381
3382#if EV_USE_SIGNALFD
3383 if (sigfd == -2)
2501 { 3384 {
2502#ifndef _WIN32 3385 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2503 sigset_t full, prev; 3386 if (sigfd < 0 && errno == EINVAL)
2504 sigfillset (&full); 3387 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2505 sigprocmask (SIG_SETMASK, &full, &prev);
2506#endif
2507 3388
2508 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 */
2509 3392
2510#ifndef _WIN32 3393 sigemptyset (&sigfd_set);
2511 sigprocmask (SIG_SETMASK, &prev, 0); 3394
2512#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 }
2513 } 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
2514 3411
2515 ev_start (EV_A_ (W)w, 1); 3412 ev_start (EV_A_ (W)w, 1);
2516 wlist_add (&signals [w->signum - 1].head, (WL)w); 3413 wlist_add (&signals [w->signum - 1].head, (WL)w);
2517 3414
2518 if (!((WL)w)->next) 3415 if (!((WL)w)->next)
3416# if EV_USE_SIGNALFD
3417 if (sigfd < 0) /*TODO*/
3418# endif
2519 { 3419 {
2520#if _WIN32 3420# ifdef _WIN32
3421 evpipe_init (EV_A);
3422
2521 signal (w->signum, ev_sighandler); 3423 signal (w->signum, ev_sighandler);
2522#else 3424# else
2523 struct sigaction sa; 3425 struct sigaction sa;
3426
3427 evpipe_init (EV_A);
3428
2524 sa.sa_handler = ev_sighandler; 3429 sa.sa_handler = ev_sighandler;
2525 sigfillset (&sa.sa_mask); 3430 sigfillset (&sa.sa_mask);
2526 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 */
2527 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 }
2528#endif 3440#endif
2529 } 3441 }
2530 3442
2531 EV_FREQUENT_CHECK; 3443 EV_FREQUENT_CHECK;
2532} 3444}
2533 3445
2534void noinline 3446void noinline
… …
2542 3454
2543 wlist_del (&signals [w->signum - 1].head, (WL)w); 3455 wlist_del (&signals [w->signum - 1].head, (WL)w);
2544 ev_stop (EV_A_ (W)w); 3456 ev_stop (EV_A_ (W)w);
2545 3457
2546 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
2547 signal (w->signum, SIG_DFL); 3477 signal (w->signum, SIG_DFL);
3478 }
2548 3479
2549 EV_FREQUENT_CHECK; 3480 EV_FREQUENT_CHECK;
2550} 3481}
3482
3483#endif
3484
3485#if EV_CHILD_ENABLE
2551 3486
2552void 3487void
2553ev_child_start (EV_P_ ev_child *w) 3488ev_child_start (EV_P_ ev_child *w)
2554{ 3489{
2555#if EV_MULTIPLICITY 3490#if EV_MULTIPLICITY
… …
2559 return; 3494 return;
2560 3495
2561 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
2562 3497
2563 ev_start (EV_A_ (W)w, 1); 3498 ev_start (EV_A_ (W)w, 1);
2564 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3499 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2565 3500
2566 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2567} 3502}
2568 3503
2569void 3504void
… …
2573 if (expect_false (!ev_is_active (w))) 3508 if (expect_false (!ev_is_active (w)))
2574 return; 3509 return;
2575 3510
2576 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2577 3512
2578 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3513 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2579 ev_stop (EV_A_ (W)w); 3514 ev_stop (EV_A_ (W)w);
2580 3515
2581 EV_FREQUENT_CHECK; 3516 EV_FREQUENT_CHECK;
2582} 3517}
3518
3519#endif
2583 3520
2584#if EV_STAT_ENABLE 3521#if EV_STAT_ENABLE
2585 3522
2586# ifdef _WIN32 3523# ifdef _WIN32
2587# undef lstat 3524# undef lstat
… …
2593#define MIN_STAT_INTERVAL 0.1074891 3530#define MIN_STAT_INTERVAL 0.1074891
2594 3531
2595static 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);
2596 3533
2597#if EV_USE_INOTIFY 3534#if EV_USE_INOTIFY
2598# 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)
2599 3538
2600static void noinline 3539static void noinline
2601infy_add (EV_P_ ev_stat *w) 3540infy_add (EV_P_ ev_stat *w)
2602{ 3541{
2603 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);
2604 3543
2605 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 */
2606 { 3564 }
3565 else
3566 {
3567 /* can't use inotify, continue to stat */
2607 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3568 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2608 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2609 3569
2610 /* monitor some parent directory for speedup hints */ 3570 /* if path is not there, monitor some parent directory for speedup hints */
2611 /* 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, */
2612 /* but an efficiency issue only */ 3572 /* but an efficiency issue only */
2613 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3573 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2614 { 3574 {
2615 char path [4096]; 3575 char path [4096];
… …
2625 if (!pend || pend == path) 3585 if (!pend || pend == path)
2626 break; 3586 break;
2627 3587
2628 *pend = 0; 3588 *pend = 0;
2629 w->wd = inotify_add_watch (fs_fd, path, mask); 3589 w->wd = inotify_add_watch (fs_fd, path, mask);
2630 } 3590 }
2631 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3591 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2632 } 3592 }
2633 } 3593 }
2634 3594
2635 if (w->wd >= 0) 3595 if (w->wd >= 0)
2636 {
2637 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);
2638 3597
2639 /* now local changes will be tracked by inotify, but remote changes won't */ 3598 /* now re-arm timer, if required */
2640 /* unless the filesystem it known to be local, we therefore still poll */ 3599 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2641 /* also do poll on <2.6.25, but with normal frequency */
2642 struct statfs sfs;
2643
2644 if (fs_2625 && !statfs (w->path, &sfs))
2645 if (sfs.f_type == 0x1373 /* devfs */
2646 || sfs.f_type == 0xEF53 /* ext2/3 */
2647 || sfs.f_type == 0x3153464a /* jfs */
2648 || sfs.f_type == 0x52654973 /* reiser3 */
2649 || sfs.f_type == 0x01021994 /* tempfs */
2650 || sfs.f_type == 0x58465342 /* xfs */)
2651 return;
2652
2653 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2654 ev_timer_again (EV_A_ &w->timer); 3600 ev_timer_again (EV_A_ &w->timer);
2655 } 3601 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2656} 3602}
2657 3603
2658static void noinline 3604static void noinline
2659infy_del (EV_P_ ev_stat *w) 3605infy_del (EV_P_ ev_stat *w)
2660{ 3606{
… …
2663 3609
2664 if (wd < 0) 3610 if (wd < 0)
2665 return; 3611 return;
2666 3612
2667 w->wd = -2; 3613 w->wd = -2;
2668 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3614 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2669 wlist_del (&fs_hash [slot].head, (WL)w); 3615 wlist_del (&fs_hash [slot].head, (WL)w);
2670 3616
2671 /* remove this watcher, if others are watching it, they will rearm */ 3617 /* remove this watcher, if others are watching it, they will rearm */
2672 inotify_rm_watch (fs_fd, wd); 3618 inotify_rm_watch (fs_fd, wd);
2673} 3619}
… …
2675static void noinline 3621static void noinline
2676infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3622infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2677{ 3623{
2678 if (slot < 0) 3624 if (slot < 0)
2679 /* overflow, need to check for all hash slots */ 3625 /* overflow, need to check for all hash slots */
2680 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3626 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2681 infy_wd (EV_A_ slot, wd, ev); 3627 infy_wd (EV_A_ slot, wd, ev);
2682 else 3628 else
2683 { 3629 {
2684 WL w_; 3630 WL w_;
2685 3631
2686 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3632 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2687 { 3633 {
2688 ev_stat *w = (ev_stat *)w_; 3634 ev_stat *w = (ev_stat *)w_;
2689 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 */
2690 3636
2691 if (w->wd == wd || wd == -1) 3637 if (w->wd == wd || wd == -1)
2692 { 3638 {
2693 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3639 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2694 { 3640 {
2695 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);
2696 w->wd = -1; 3642 w->wd = -1;
2697 infy_add (EV_A_ w); /* re-add, no matter what */ 3643 infy_add (EV_A_ w); /* re-add, no matter what */
2698 } 3644 }
2699 3645
2700 stat_timer_cb (EV_A_ &w->timer, 0); 3646 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2705 3651
2706static void 3652static void
2707infy_cb (EV_P_ ev_io *w, int revents) 3653infy_cb (EV_P_ ev_io *w, int revents)
2708{ 3654{
2709 char buf [EV_INOTIFY_BUFSIZE]; 3655 char buf [EV_INOTIFY_BUFSIZE];
2710 struct inotify_event *ev = (struct inotify_event *)buf;
2711 int ofs; 3656 int ofs;
2712 int len = read (fs_fd, buf, sizeof (buf)); 3657 int len = read (fs_fd, buf, sizeof (buf));
2713 3658
2714 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);
2715 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 }
2716} 3665}
2717 3666
2718inline_size void 3667inline_size void ecb_cold
2719check_2625 (EV_P) 3668ev_check_2625 (EV_P)
2720{ 3669{
2721 /* kernels < 2.6.25 are borked 3670 /* kernels < 2.6.25 are borked
2722 * 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
2723 */ 3672 */
2724 struct utsname buf; 3673 if (ev_linux_version () < 0x020619)
2725 int major, minor, micro;
2726
2727 if (uname (&buf))
2728 return; 3674 return;
2729 3675
2730 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2731 return;
2732
2733 if (major < 2
2734 || (major == 2 && minor < 6)
2735 || (major == 2 && minor == 6 && micro < 25))
2736 return;
2737
2738 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 ();
2739} 3688}
2740 3689
2741inline_size void 3690inline_size void
2742infy_init (EV_P) 3691infy_init (EV_P)
2743{ 3692{
2744 if (fs_fd != -2) 3693 if (fs_fd != -2)
2745 return; 3694 return;
2746 3695
2747 fs_fd = -1; 3696 fs_fd = -1;
2748 3697
2749 check_2625 (EV_A); 3698 ev_check_2625 (EV_A);
2750 3699
2751 fs_fd = inotify_init (); 3700 fs_fd = infy_newfd ();
2752 3701
2753 if (fs_fd >= 0) 3702 if (fs_fd >= 0)
2754 { 3703 {
3704 fd_intern (fs_fd);
2755 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3705 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2756 ev_set_priority (&fs_w, EV_MAXPRI); 3706 ev_set_priority (&fs_w, EV_MAXPRI);
2757 ev_io_start (EV_A_ &fs_w); 3707 ev_io_start (EV_A_ &fs_w);
3708 ev_unref (EV_A);
2758 } 3709 }
2759} 3710}
2760 3711
2761inline_size void 3712inline_size void
2762infy_fork (EV_P) 3713infy_fork (EV_P)
… …
2764 int slot; 3715 int slot;
2765 3716
2766 if (fs_fd < 0) 3717 if (fs_fd < 0)
2767 return; 3718 return;
2768 3719
3720 ev_ref (EV_A);
3721 ev_io_stop (EV_A_ &fs_w);
2769 close (fs_fd); 3722 close (fs_fd);
2770 fs_fd = inotify_init (); 3723 fs_fd = infy_newfd ();
2771 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
2772 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3733 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2773 { 3734 {
2774 WL w_ = fs_hash [slot].head; 3735 WL w_ = fs_hash [slot].head;
2775 fs_hash [slot].head = 0; 3736 fs_hash [slot].head = 0;
2776 3737
2777 while (w_) 3738 while (w_)
… …
2782 w->wd = -1; 3743 w->wd = -1;
2783 3744
2784 if (fs_fd >= 0) 3745 if (fs_fd >= 0)
2785 infy_add (EV_A_ w); /* re-add, no matter what */ 3746 infy_add (EV_A_ w); /* re-add, no matter what */
2786 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);
2787 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 }
2788 } 3754 }
2789 } 3755 }
2790} 3756}
2791 3757
2792#endif 3758#endif
… …
2809static void noinline 3775static void noinline
2810stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3776stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2811{ 3777{
2812 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2813 3779
2814 /* we copy this here each the time so that */ 3780 ev_statdata prev = w->attr;
2815 /* prev has the old value when the callback gets invoked */
2816 w->prev = w->attr;
2817 ev_stat_stat (EV_A_ w); 3781 ev_stat_stat (EV_A_ w);
2818 3782
2819 /* 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 */
2820 if ( 3784 if (
2821 w->prev.st_dev != w->attr.st_dev 3785 prev.st_dev != w->attr.st_dev
2822 || w->prev.st_ino != w->attr.st_ino 3786 || prev.st_ino != w->attr.st_ino
2823 || w->prev.st_mode != w->attr.st_mode 3787 || prev.st_mode != w->attr.st_mode
2824 || w->prev.st_nlink != w->attr.st_nlink 3788 || prev.st_nlink != w->attr.st_nlink
2825 || w->prev.st_uid != w->attr.st_uid 3789 || prev.st_uid != w->attr.st_uid
2826 || w->prev.st_gid != w->attr.st_gid 3790 || prev.st_gid != w->attr.st_gid
2827 || w->prev.st_rdev != w->attr.st_rdev 3791 || prev.st_rdev != w->attr.st_rdev
2828 || w->prev.st_size != w->attr.st_size 3792 || prev.st_size != w->attr.st_size
2829 || w->prev.st_atime != w->attr.st_atime 3793 || prev.st_atime != w->attr.st_atime
2830 || w->prev.st_mtime != w->attr.st_mtime 3794 || prev.st_mtime != w->attr.st_mtime
2831 || w->prev.st_ctime != w->attr.st_ctime 3795 || prev.st_ctime != w->attr.st_ctime
2832 ) { 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
2833 #if EV_USE_INOTIFY 3802 #if EV_USE_INOTIFY
2834 if (fs_fd >= 0) 3803 if (fs_fd >= 0)
2835 { 3804 {
2836 infy_del (EV_A_ w); 3805 infy_del (EV_A_ w);
2837 infy_add (EV_A_ w); 3806 infy_add (EV_A_ w);
… …
2862 3831
2863 if (fs_fd >= 0) 3832 if (fs_fd >= 0)
2864 infy_add (EV_A_ w); 3833 infy_add (EV_A_ w);
2865 else 3834 else
2866#endif 3835#endif
3836 {
2867 ev_timer_again (EV_A_ &w->timer); 3837 ev_timer_again (EV_A_ &w->timer);
3838 ev_unref (EV_A);
3839 }
2868 3840
2869 ev_start (EV_A_ (W)w, 1); 3841 ev_start (EV_A_ (W)w, 1);
2870 3842
2871 EV_FREQUENT_CHECK; 3843 EV_FREQUENT_CHECK;
2872} 3844}
… …
2881 EV_FREQUENT_CHECK; 3853 EV_FREQUENT_CHECK;
2882 3854
2883#if EV_USE_INOTIFY 3855#if EV_USE_INOTIFY
2884 infy_del (EV_A_ w); 3856 infy_del (EV_A_ w);
2885#endif 3857#endif
3858
3859 if (ev_is_active (&w->timer))
3860 {
3861 ev_ref (EV_A);
2886 ev_timer_stop (EV_A_ &w->timer); 3862 ev_timer_stop (EV_A_ &w->timer);
3863 }
2887 3864
2888 ev_stop (EV_A_ (W)w); 3865 ev_stop (EV_A_ (W)w);
2889 3866
2890 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2891} 3868}
… …
2936 3913
2937 EV_FREQUENT_CHECK; 3914 EV_FREQUENT_CHECK;
2938} 3915}
2939#endif 3916#endif
2940 3917
3918#if EV_PREPARE_ENABLE
2941void 3919void
2942ev_prepare_start (EV_P_ ev_prepare *w) 3920ev_prepare_start (EV_P_ ev_prepare *w)
2943{ 3921{
2944 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
2945 return; 3923 return;
… …
2971 3949
2972 ev_stop (EV_A_ (W)w); 3950 ev_stop (EV_A_ (W)w);
2973 3951
2974 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
2975} 3953}
3954#endif
2976 3955
3956#if EV_CHECK_ENABLE
2977void 3957void
2978ev_check_start (EV_P_ ev_check *w) 3958ev_check_start (EV_P_ ev_check *w)
2979{ 3959{
2980 if (expect_false (ev_is_active (w))) 3960 if (expect_false (ev_is_active (w)))
2981 return; 3961 return;
… …
3007 3987
3008 ev_stop (EV_A_ (W)w); 3988 ev_stop (EV_A_ (W)w);
3009 3989
3010 EV_FREQUENT_CHECK; 3990 EV_FREQUENT_CHECK;
3011} 3991}
3992#endif
3012 3993
3013#if EV_EMBED_ENABLE 3994#if EV_EMBED_ENABLE
3014void noinline 3995void noinline
3015ev_embed_sweep (EV_P_ ev_embed *w) 3996ev_embed_sweep (EV_P_ ev_embed *w)
3016{ 3997{
3017 ev_loop (w->other, EVLOOP_NONBLOCK); 3998 ev_run (w->other, EVRUN_NOWAIT);
3018} 3999}
3019 4000
3020static void 4001static void
3021embed_io_cb (EV_P_ ev_io *io, int revents) 4002embed_io_cb (EV_P_ ev_io *io, int revents)
3022{ 4003{
3023 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4004 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3024 4005
3025 if (ev_cb (w)) 4006 if (ev_cb (w))
3026 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4007 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3027 else 4008 else
3028 ev_loop (w->other, EVLOOP_NONBLOCK); 4009 ev_run (w->other, EVRUN_NOWAIT);
3029} 4010}
3030 4011
3031static void 4012static void
3032embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4013embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3033{ 4014{
3034 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4015 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3035 4016
3036 { 4017 {
3037 struct ev_loop *loop = w->other; 4018 EV_P = w->other;
3038 4019
3039 while (fdchangecnt) 4020 while (fdchangecnt)
3040 { 4021 {
3041 fd_reify (EV_A); 4022 fd_reify (EV_A);
3042 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4023 ev_run (EV_A_ EVRUN_NOWAIT);
3043 } 4024 }
3044 } 4025 }
3045} 4026}
3046 4027
3047static void 4028static void
… …
3050 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));
3051 4032
3052 ev_embed_stop (EV_A_ w); 4033 ev_embed_stop (EV_A_ w);
3053 4034
3054 { 4035 {
3055 struct ev_loop *loop = w->other; 4036 EV_P = w->other;
3056 4037
3057 ev_loop_fork (EV_A); 4038 ev_loop_fork (EV_A);
3058 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4039 ev_run (EV_A_ EVRUN_NOWAIT);
3059 } 4040 }
3060 4041
3061 ev_embed_start (EV_A_ w); 4042 ev_embed_start (EV_A_ w);
3062} 4043}
3063 4044
… …
3074{ 4055{
3075 if (expect_false (ev_is_active (w))) 4056 if (expect_false (ev_is_active (w)))
3076 return; 4057 return;
3077 4058
3078 { 4059 {
3079 struct ev_loop *loop = w->other; 4060 EV_P = w->other;
3080 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 ()));
3081 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);
3082 } 4063 }
3083 4064
3084 EV_FREQUENT_CHECK; 4065 EV_FREQUENT_CHECK;
… …
3111 4092
3112 ev_io_stop (EV_A_ &w->io); 4093 ev_io_stop (EV_A_ &w->io);
3113 ev_prepare_stop (EV_A_ &w->prepare); 4094 ev_prepare_stop (EV_A_ &w->prepare);
3114 ev_fork_stop (EV_A_ &w->fork); 4095 ev_fork_stop (EV_A_ &w->fork);
3115 4096
4097 ev_stop (EV_A_ (W)w);
4098
3116 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
3117} 4100}
3118#endif 4101#endif
3119 4102
3120#if EV_FORK_ENABLE 4103#if EV_FORK_ENABLE
… …
3153 4136
3154 EV_FREQUENT_CHECK; 4137 EV_FREQUENT_CHECK;
3155} 4138}
3156#endif 4139#endif
3157 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
3158#if EV_ASYNC_ENABLE 4182#if EV_ASYNC_ENABLE
3159void 4183void
3160ev_async_start (EV_P_ ev_async *w) 4184ev_async_start (EV_P_ ev_async *w)
3161{ 4185{
3162 if (expect_false (ev_is_active (w))) 4186 if (expect_false (ev_is_active (w)))
3163 return; 4187 return;
3164 4188
4189 w->sent = 0;
4190
3165 evpipe_init (EV_A); 4191 evpipe_init (EV_A);
3166 4192
3167 EV_FREQUENT_CHECK; 4193 EV_FREQUENT_CHECK;
3168 4194
3169 ev_start (EV_A_ (W)w, ++asynccnt); 4195 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3196 4222
3197void 4223void
3198ev_async_send (EV_P_ ev_async *w) 4224ev_async_send (EV_P_ ev_async *w)
3199{ 4225{
3200 w->sent = 1; 4226 w->sent = 1;
3201 evpipe_write (EV_A_ &gotasync); 4227 evpipe_write (EV_A_ &async_pending);
3202} 4228}
3203#endif 4229#endif
3204 4230
3205/*****************************************************************************/ 4231/*****************************************************************************/
3206 4232
… …
3246{ 4272{
3247 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));
3248 4274
3249 if (expect_false (!once)) 4275 if (expect_false (!once))
3250 { 4276 {
3251 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3252 return; 4278 return;
3253 } 4279 }
3254 4280
3255 once->cb = cb; 4281 once->cb = cb;
3256 once->arg = arg; 4282 once->arg = arg;
… …
3271} 4297}
3272 4298
3273/*****************************************************************************/ 4299/*****************************************************************************/
3274 4300
3275#if EV_WALK_ENABLE 4301#if EV_WALK_ENABLE
3276void 4302void ecb_cold
3277ev_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))
3278{ 4304{
3279 int i, j; 4305 int i, j;
3280 ev_watcher_list *wl, *wn; 4306 ev_watcher_list *wl, *wn;
3281 4307
… …
3325 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4351 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3326#endif 4352#endif
3327 4353
3328#if EV_IDLE_ENABLE 4354#if EV_IDLE_ENABLE
3329 if (types & EV_IDLE) 4355 if (types & EV_IDLE)
3330 for (j = NUMPRI; i--; ) 4356 for (j = NUMPRI; j--; )
3331 for (i = idlecnt [j]; i--; ) 4357 for (i = idlecnt [j]; i--; )
3332 cb (EV_A_ EV_IDLE, idles [j][i]); 4358 cb (EV_A_ EV_IDLE, idles [j][i]);
3333#endif 4359#endif
3334 4360
3335#if EV_FORK_ENABLE 4361#if EV_FORK_ENABLE
… …
3343 if (types & EV_ASYNC) 4369 if (types & EV_ASYNC)
3344 for (i = asynccnt; i--; ) 4370 for (i = asynccnt; i--; )
3345 cb (EV_A_ EV_ASYNC, asyncs [i]); 4371 cb (EV_A_ EV_ASYNC, asyncs [i]);
3346#endif 4372#endif
3347 4373
4374#if EV_PREPARE_ENABLE
3348 if (types & EV_PREPARE) 4375 if (types & EV_PREPARE)
3349 for (i = preparecnt; i--; ) 4376 for (i = preparecnt; i--; )
3350#if EV_EMBED_ENABLE 4377# if EV_EMBED_ENABLE
3351 if (ev_cb (prepares [i]) != embed_prepare_cb) 4378 if (ev_cb (prepares [i]) != embed_prepare_cb)
3352#endif 4379# endif
3353 cb (EV_A_ EV_PREPARE, prepares [i]); 4380 cb (EV_A_ EV_PREPARE, prepares [i]);
4381#endif
3354 4382
4383#if EV_CHECK_ENABLE
3355 if (types & EV_CHECK) 4384 if (types & EV_CHECK)
3356 for (i = checkcnt; i--; ) 4385 for (i = checkcnt; i--; )
3357 cb (EV_A_ EV_CHECK, checks [i]); 4386 cb (EV_A_ EV_CHECK, checks [i]);
4387#endif
3358 4388
4389#if EV_SIGNAL_ENABLE
3359 if (types & EV_SIGNAL) 4390 if (types & EV_SIGNAL)
3360 for (i = 0; i < signalmax; ++i) 4391 for (i = 0; i < EV_NSIG - 1; ++i)
3361 for (wl = signals [i].head; wl; ) 4392 for (wl = signals [i].head; wl; )
3362 { 4393 {
3363 wn = wl->next; 4394 wn = wl->next;
3364 cb (EV_A_ EV_SIGNAL, wl); 4395 cb (EV_A_ EV_SIGNAL, wl);
3365 wl = wn; 4396 wl = wn;
3366 } 4397 }
4398#endif
3367 4399
4400#if EV_CHILD_ENABLE
3368 if (types & EV_CHILD) 4401 if (types & EV_CHILD)
3369 for (i = EV_PID_HASHSIZE; i--; ) 4402 for (i = (EV_PID_HASHSIZE); i--; )
3370 for (wl = childs [i]; wl; ) 4403 for (wl = childs [i]; wl; )
3371 { 4404 {
3372 wn = wl->next; 4405 wn = wl->next;
3373 cb (EV_A_ EV_CHILD, wl); 4406 cb (EV_A_ EV_CHILD, wl);
3374 wl = wn; 4407 wl = wn;
3375 } 4408 }
4409#endif
3376/* EV_STAT 0x00001000 /* stat data changed */ 4410/* EV_STAT 0x00001000 /* stat data changed */
3377/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4411/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3378} 4412}
3379#endif 4413#endif
3380 4414
3381#if EV_MULTIPLICITY 4415#if EV_MULTIPLICITY
3382 #include "ev_wrap.h" 4416 #include "ev_wrap.h"
3383#endif 4417#endif
3384 4418
3385#ifdef __cplusplus
3386}
3387#endif
3388

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