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Comparing libev/ev.c (file contents):
Revision 1.294 by root, Wed Jul 8 02:46:05 2009 UTC vs.
Revision 1.402 by sf-exg, Tue Dec 20 10:34:10 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 cases 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
904#endif
905
906#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
907
908#if EV_MINPRI == EV_MAXPRI
909# define ABSPRI(w) (((W)w), 0)
392#else 910#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 911# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
912#endif
398 913
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 914#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 915#define EMPTY2(a,b) /* used to suppress some warnings */
401 916
402typedef ev_watcher *W; 917typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 921#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 922#define ev_at(w) ((WT)(w))->at
408 923
409#if EV_USE_REALTIME 924#if EV_USE_REALTIME
410/* 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 */
411/* giving it a reasonably high chance of working on typical architetcures */ 926/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 927static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 928#endif
414 929
415#if EV_USE_MONOTONIC 930#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 931static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 932#endif
418 933
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
419#ifdef _WIN32 944#ifdef _WIN32
420# include "ev_win32.c" 945# include "ev_win32.c"
421#endif 946#endif
422 947
423/*****************************************************************************/ 948/*****************************************************************************/
424 949
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
425static void (*syserr_cb)(const char *msg); 1048static void (*syserr_cb)(const char *msg);
426 1049
427void 1050void ecb_cold
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1051ev_set_syserr_cb (void (*cb)(const char *msg))
429{ 1052{
430 syserr_cb = cb; 1053 syserr_cb = cb;
431} 1054}
432 1055
433static void noinline 1056static void noinline ecb_cold
434ev_syserr (const char *msg) 1057ev_syserr (const char *msg)
435{ 1058{
436 if (!msg) 1059 if (!msg)
437 msg = "(libev) system error"; 1060 msg = "(libev) system error";
438 1061
439 if (syserr_cb) 1062 if (syserr_cb)
440 syserr_cb (msg); 1063 syserr_cb (msg);
441 else 1064 else
442 { 1065 {
1066#if EV_AVOID_STDIO
1067 ev_printerr (msg);
1068 ev_printerr (": ");
1069 ev_printerr (strerror (errno));
1070 ev_printerr ("\n");
1071#else
443 perror (msg); 1072 perror (msg);
1073#endif
444 abort (); 1074 abort ();
445 } 1075 }
446} 1076}
447 1077
448static void * 1078static void *
449ev_realloc_emul (void *ptr, long size) 1079ev_realloc_emul (void *ptr, long size)
450{ 1080{
1081#if __GLIBC__
1082 return realloc (ptr, size);
1083#else
451 /* some systems, notably openbsd and darwin, fail to properly 1084 /* some systems, notably openbsd and darwin, fail to properly
452 * 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
453 * the single unix specification, so work around them here. 1086 * the single unix specification, so work around them here.
454 */ 1087 */
455 1088
456 if (size) 1089 if (size)
457 return realloc (ptr, size); 1090 return realloc (ptr, size);
458 1091
459 free (ptr); 1092 free (ptr);
460 return 0; 1093 return 0;
1094#endif
461} 1095}
462 1096
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1097static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
464 1098
465void 1099void ecb_cold
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1100ev_set_allocator (void *(*cb)(void *ptr, long size))
467{ 1101{
468 alloc = cb; 1102 alloc = cb;
469} 1103}
470 1104
… …
473{ 1107{
474 ptr = alloc (ptr, size); 1108 ptr = alloc (ptr, size);
475 1109
476 if (!ptr && size) 1110 if (!ptr && size)
477 { 1111 {
1112#if EV_AVOID_STDIO
1113 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1114#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1115 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1116#endif
479 abort (); 1117 abort ();
480 } 1118 }
481 1119
482 return ptr; 1120 return ptr;
483} 1121}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1123#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1124#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1125
488/*****************************************************************************/ 1126/*****************************************************************************/
489 1127
1128/* set in reify when reification needed */
1129#define EV_ANFD_REIFY 1
1130
490/* file descriptor info structure */ 1131/* file descriptor info structure */
491typedef struct 1132typedef struct
492{ 1133{
493 WL head; 1134 WL head;
494 unsigned char events; /* the events watched for */ 1135 unsigned char events; /* the events watched for */
495 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) */
496 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 */
497 unsigned char unused; 1138 unsigned char unused;
498#if EV_USE_EPOLL 1139#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1140 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1141#endif
501#if EV_SELECT_IS_WINSOCKET 1142#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1143 SOCKET handle;
1144#endif
1145#if EV_USE_IOCP
1146 OVERLAPPED or, ow;
503#endif 1147#endif
504} ANFD; 1148} ANFD;
505 1149
506/* stores the pending event set for a given watcher */ 1150/* stores the pending event set for a given watcher */
507typedef struct 1151typedef struct
… …
549 #undef VAR 1193 #undef VAR
550 }; 1194 };
551 #include "ev_wrap.h" 1195 #include "ev_wrap.h"
552 1196
553 static struct ev_loop default_loop_struct; 1197 static struct ev_loop default_loop_struct;
554 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 definition despite extern */
555 1199
556#else 1200#else
557 1201
558 ev_tstamp ev_rt_now; 1202 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
559 #define VAR(name,decl) static decl; 1203 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1204 #include "ev_vars.h"
561 #undef VAR 1205 #undef VAR
562 1206
563 static int ev_default_loop_ptr; 1207 static int ev_default_loop_ptr;
564 1208
565#endif 1209#endif
566 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
567/*****************************************************************************/ 1223/*****************************************************************************/
568 1224
569#ifndef EV_HAVE_EV_TIME 1225#ifndef EV_HAVE_EV_TIME
570ev_tstamp 1226ev_tstamp
571ev_time (void) 1227ev_time (void)
… …
614 if (delay > 0.) 1270 if (delay > 0.)
615 { 1271 {
616#if EV_USE_NANOSLEEP 1272#if EV_USE_NANOSLEEP
617 struct timespec ts; 1273 struct timespec ts;
618 1274
619 ts.tv_sec = (time_t)delay; 1275 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 1276 nanosleep (&ts, 0);
623#elif defined(_WIN32) 1277#elif defined(_WIN32)
624 Sleep ((unsigned long)(delay * 1e3)); 1278 Sleep ((unsigned long)(delay * 1e3));
625#else 1279#else
626 struct timeval tv; 1280 struct timeval tv;
627 1281
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* 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 */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1283 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 1284 /* by older ones */
1285 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 1286 select (0, 0, 0, 0, &tv);
635#endif 1287#endif
636 } 1288 }
637} 1289}
638 1290
639/*****************************************************************************/ 1291/*****************************************************************************/
640 1292
641#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 */
642 1294
643/* find a suitable new size for the given array, */ 1295/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 1296/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 1297inline_size int
646array_nextsize (int elem, int cur, int cnt) 1298array_nextsize (int elem, int cur, int cnt)
647{ 1299{
648 int ncur = cur + 1; 1300 int ncur = cur + 1;
649 1301
650 do 1302 do
651 ncur <<= 1; 1303 ncur <<= 1;
652 while (cnt > ncur); 1304 while (cnt > ncur);
653 1305
654 /* 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 */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1307 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 { 1308 {
657 ncur *= elem; 1309 ncur *= elem;
658 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);
659 ncur = ncur - sizeof (void *) * 4; 1311 ncur = ncur - sizeof (void *) * 4;
… …
661 } 1313 }
662 1314
663 return ncur; 1315 return ncur;
664} 1316}
665 1317
666static noinline void * 1318static void * noinline ecb_cold
667array_realloc (int elem, void *base, int *cur, int cnt) 1319array_realloc (int elem, void *base, int *cur, int cnt)
668{ 1320{
669 *cur = array_nextsize (elem, *cur, cnt); 1321 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 1322 return ev_realloc (base, elem * *cur);
671} 1323}
… …
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1326 memset ((void *)(base), 0, sizeof (*(base)) * (count))
675 1327
676#define array_needsize(type,base,cur,cnt,init) \ 1328#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 1329 if (expect_false ((cnt) > (cur))) \
678 { \ 1330 { \
679 int ocur_ = (cur); \ 1331 int ecb_unused ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 1332 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 1333 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 1334 init ((base) + (ocur_), (cur) - ocur_); \
683 } 1335 }
684 1336
… …
745} 1397}
746 1398
747/*****************************************************************************/ 1399/*****************************************************************************/
748 1400
749inline_speed void 1401inline_speed void
750fd_event (EV_P_ int fd, int revents) 1402fd_event_nocheck (EV_P_ int fd, int revents)
751{ 1403{
752 ANFD *anfd = anfds + fd; 1404 ANFD *anfd = anfds + fd;
753 ev_io *w; 1405 ev_io *w;
754 1406
755 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)
… …
759 if (ev) 1411 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 1412 ev_feed_event (EV_A_ (W)w, ev);
761 } 1413 }
762} 1414}
763 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
764void 1427void
765ev_feed_fd_event (EV_P_ int fd, int revents) 1428ev_feed_fd_event (EV_P_ int fd, int revents)
766{ 1429{
767 if (fd >= 0 && fd < anfdmax) 1430 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 1431 fd_event_nocheck (EV_A_ fd, revents);
769} 1432}
770 1433
771/* make sure the external fd watch events are in-sync */ 1434/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 1435/* with the kernel/libev internal state */
773inline_size void 1436inline_size void
774fd_reify (EV_P) 1437fd_reify (EV_P)
775{ 1438{
776 int i; 1439 int i;
777 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
778 for (i = 0; i < fdchangecnt; ++i) 1466 for (i = 0; i < fdchangecnt; ++i)
779 { 1467 {
780 int fd = fdchanges [i]; 1468 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 1469 ANFD *anfd = anfds + fd;
782 ev_io *w; 1470 ev_io *w;
783 1471
784 unsigned char events = 0; 1472 unsigned char o_events = anfd->events;
1473 unsigned char o_reify = anfd->reify;
785 1474
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1475 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 1476
789#if EV_SELECT_IS_WINSOCKET 1477 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 1478 {
792 unsigned long arg; 1479 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 1480
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1481 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 1482 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 1483
797 #endif 1484 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1485 o_reify = EV__IOFDSET; /* actually |= */
799 } 1486 }
800#endif
801 1487
802 { 1488 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 1489 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 1490 }
813 1491
814 fdchangecnt = 0; 1492 fdchangecnt = 0;
815} 1493}
816 1494
… …
828 fdchanges [fdchangecnt - 1] = fd; 1506 fdchanges [fdchangecnt - 1] = fd;
829 } 1507 }
830} 1508}
831 1509
832/* 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 */
833inline_speed void 1511inline_speed void ecb_cold
834fd_kill (EV_P_ int fd) 1512fd_kill (EV_P_ int fd)
835{ 1513{
836 ev_io *w; 1514 ev_io *w;
837 1515
838 while ((w = (ev_io *)anfds [fd].head)) 1516 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 1518 ev_io_stop (EV_A_ w);
841 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);
842 } 1520 }
843} 1521}
844 1522
845/* check whether the given fd is atcually valid, for error recovery */ 1523/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1524inline_size int ecb_cold
847fd_valid (int fd) 1525fd_valid (int fd)
848{ 1526{
849#ifdef _WIN32 1527#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1528 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1529#else
852 return fcntl (fd, F_GETFD) != -1; 1530 return fcntl (fd, F_GETFD) != -1;
853#endif 1531#endif
854} 1532}
855 1533
856/* called on EBADF to verify fds */ 1534/* called on EBADF to verify fds */
857static void noinline 1535static void noinline ecb_cold
858fd_ebadf (EV_P) 1536fd_ebadf (EV_P)
859{ 1537{
860 int fd; 1538 int fd;
861 1539
862 for (fd = 0; fd < anfdmax; ++fd) 1540 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 1542 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 1543 fd_kill (EV_A_ fd);
866} 1544}
867 1545
868/* 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 */
869static void noinline 1547static void noinline ecb_cold
870fd_enomem (EV_P) 1548fd_enomem (EV_P)
871{ 1549{
872 int fd; 1550 int fd;
873 1551
874 for (fd = anfdmax; fd--; ) 1552 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1553 if (anfds [fd].events)
876 { 1554 {
877 fd_kill (EV_A_ fd); 1555 fd_kill (EV_A_ fd);
878 return; 1556 break;
879 } 1557 }
880} 1558}
881 1559
882/* 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 */
883static void noinline 1561static void noinline
… …
888 for (fd = 0; fd < anfdmax; ++fd) 1566 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1567 if (anfds [fd].events)
890 { 1568 {
891 anfds [fd].events = 0; 1569 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1570 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1571 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1572 }
895} 1573}
896 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
897/*****************************************************************************/ 1589/*****************************************************************************/
898 1590
899/* 1591/*
900 * 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
901 * 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
902 * the branching factor of the d-tree. 1594 * the branching factor of the d-tree.
903 */ 1595 */
904 1596
905/* 1597/*
… …
973 1665
974 for (;;) 1666 for (;;)
975 { 1667 {
976 int c = k << 1; 1668 int c = k << 1;
977 1669
978 if (c > N + HEAP0 - 1) 1670 if (c >= N + HEAP0)
979 break; 1671 break;
980 1672
981 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])
982 ? 1 : 0; 1674 ? 1 : 0;
983 1675
… …
1019 1711
1020/* move an element suitably so it is in a correct place */ 1712/* move an element suitably so it is in a correct place */
1021inline_size void 1713inline_size void
1022adjustheap (ANHE *heap, int N, int k) 1714adjustheap (ANHE *heap, int N, int k)
1023{ 1715{
1024 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)]))
1025 upheap (heap, k); 1717 upheap (heap, k);
1026 else 1718 else
1027 downheap (heap, N, k); 1719 downheap (heap, N, k);
1028} 1720}
1029 1721
… …
1042/*****************************************************************************/ 1734/*****************************************************************************/
1043 1735
1044/* associate signal watchers to a signal signal */ 1736/* associate signal watchers to a signal signal */
1045typedef struct 1737typedef struct
1046{ 1738{
1739 EV_ATOMIC_T pending;
1740#if EV_MULTIPLICITY
1741 EV_P;
1742#endif
1047 WL head; 1743 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 1744} ANSIG;
1050 1745
1051static ANSIG *signals; 1746static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 1747
1056/*****************************************************************************/ 1748/*****************************************************************************/
1057 1749
1058/* used to prepare libev internal fd's */ 1750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */
1060inline_speed void
1061fd_intern (int fd)
1062{
1063#ifdef _WIN32
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 1751
1072static void noinline 1752static void noinline ecb_cold
1073evpipe_init (EV_P) 1753evpipe_init (EV_P)
1074{ 1754{
1075 if (!ev_is_active (&pipe_w)) 1755 if (!ev_is_active (&pipe_w))
1076 { 1756 {
1077#if EV_USE_EVENTFD 1757# if EV_USE_EVENTFD
1758 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1759 if (evfd < 0 && errno == EINVAL)
1078 if ((evfd = eventfd (0, 0)) >= 0) 1760 evfd = eventfd (0, 0);
1761
1762 if (evfd >= 0)
1079 { 1763 {
1080 evpipe [0] = -1; 1764 evpipe [0] = -1;
1081 fd_intern (evfd); 1765 fd_intern (evfd); /* doing it twice doesn't hurt */
1082 ev_io_set (&pipe_w, evfd, EV_READ); 1766 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 1767 }
1084 else 1768 else
1085#endif 1769# endif
1086 { 1770 {
1087 while (pipe (evpipe)) 1771 while (pipe (evpipe))
1088 ev_syserr ("(libev) error creating signal/async pipe"); 1772 ev_syserr ("(libev) error creating signal/async pipe");
1089 1773
1090 fd_intern (evpipe [0]); 1774 fd_intern (evpipe [0]);
… …
1095 ev_io_start (EV_A_ &pipe_w); 1779 ev_io_start (EV_A_ &pipe_w);
1096 ev_unref (EV_A); /* watcher should not keep loop alive */ 1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 } 1781 }
1098} 1782}
1099 1783
1100inline_size void 1784inline_speed void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{ 1786{
1103 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)
1104 { 1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1105 int old_errno = errno; /* save errno because write might clobber it */ 1804 old_errno = errno; /* save errno because write will clobber it */
1106
1107 *flag = 1;
1108 1805
1109#if EV_USE_EVENTFD 1806#if EV_USE_EVENTFD
1110 if (evfd >= 0) 1807 if (evfd >= 0)
1111 { 1808 {
1112 uint64_t counter = 1; 1809 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t)); 1810 write (evfd, &counter, sizeof (uint64_t));
1114 } 1811 }
1115 else 1812 else
1116#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. */
1117 write (evpipe [1], &old_errno, 1); 1820 write (evpipe [1], &(evpipe [1]), 1);
1821 }
1118 1822
1119 errno = old_errno; 1823 errno = old_errno;
1120 } 1824 }
1121} 1825}
1122 1826
1123/* called whenever the libev signal pipe */ 1827/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 1828/* got some events (signal, async) */
1125static void 1829static void
1126pipecb (EV_P_ ev_io *iow, int revents) 1830pipecb (EV_P_ ev_io *iow, int revents)
1127{ 1831{
1832 int i;
1833
1834 if (revents & EV_READ)
1835 {
1128#if EV_USE_EVENTFD 1836#if EV_USE_EVENTFD
1129 if (evfd >= 0) 1837 if (evfd >= 0)
1130 { 1838 {
1131 uint64_t counter; 1839 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 1840 read (evfd, &counter, sizeof (uint64_t));
1133 } 1841 }
1134 else 1842 else
1135#endif 1843#endif
1136 { 1844 {
1137 char dummy; 1845 char dummy;
1846 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1138 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)
1139 } 1855 {
1856 sig_pending = 0;
1140 1857
1141 if (gotsig && ev_is_default_loop (EV_A)) 1858 for (i = EV_NSIG - 1; i--; )
1142 { 1859 if (expect_false (signals [i].pending))
1143 int signum;
1144 gotsig = 0;
1145
1146 for (signum = signalmax; signum--; )
1147 if (signals [signum].gotsig)
1148 ev_feed_signal_event (EV_A_ signum + 1); 1860 ev_feed_signal_event (EV_A_ i + 1);
1149 } 1861 }
1862#endif
1150 1863
1151#if EV_ASYNC_ENABLE 1864#if EV_ASYNC_ENABLE
1152 if (gotasync) 1865 if (async_pending)
1153 { 1866 {
1154 int i; 1867 async_pending = 0;
1155 gotasync = 0;
1156 1868
1157 for (i = asynccnt; i--; ) 1869 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 1870 if (asyncs [i]->sent)
1159 { 1871 {
1160 asyncs [i]->sent = 0; 1872 asyncs [i]->sent = 0;
… …
1164#endif 1876#endif
1165} 1877}
1166 1878
1167/*****************************************************************************/ 1879/*****************************************************************************/
1168 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
1169static void 1898static void
1170ev_sighandler (int signum) 1899ev_sighandler (int signum)
1171{ 1900{
1172#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct;
1174#endif
1175
1176#if _WIN32 1901#ifdef _WIN32
1177 signal (signum, ev_sighandler); 1902 signal (signum, ev_sighandler);
1178#endif 1903#endif
1179 1904
1180 signals [signum - 1].gotsig = 1; 1905 ev_feed_signal (signum);
1181 evpipe_write (EV_A_ &gotsig);
1182} 1906}
1183 1907
1184void noinline 1908void noinline
1185ev_feed_signal_event (EV_P_ int signum) 1909ev_feed_signal_event (EV_P_ int signum)
1186{ 1910{
1187 WL w; 1911 WL w;
1188 1912
1913 if (expect_false (signum <= 0 || signum > EV_NSIG))
1914 return;
1915
1916 --signum;
1917
1189#if EV_MULTIPLICITY 1918#if EV_MULTIPLICITY
1190 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 */
1191#endif 1920 /* or, likely more useful, feeding a signal nobody is waiting for */
1192 1921
1193 --signum; 1922 if (expect_false (signals [signum].loop != EV_A))
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 1923 return;
1924#endif
1197 1925
1198 signals [signum].gotsig = 0; 1926 signals [signum].pending = 0;
1199 1927
1200 for (w = signals [signum].head; w; w = w->next) 1928 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1929 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 1930}
1203 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
1204/*****************************************************************************/ 1954/*****************************************************************************/
1205 1955
1956#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 1957static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 1958
1210static ev_signal childev; 1959static ev_signal childev;
1211 1960
1212#ifndef WIFCONTINUED 1961#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 1962# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 1967child_reap (EV_P_ int chain, int pid, int status)
1219{ 1968{
1220 ev_child *w; 1969 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1970 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 1971
1223 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)
1224 { 1973 {
1225 if ((w->pid == pid || !w->pid) 1974 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 1975 && (!traced || (w->flags & 1)))
1227 { 1976 {
1228 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 */
… …
1253 /* 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 */
1254 /* 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 */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2004 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 2005
1257 child_reap (EV_A_ pid, pid, status); 2006 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 2007 if ((EV_PID_HASHSIZE) > 1)
1259 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 */
1260} 2009}
1261 2010
1262#endif 2011#endif
1263 2012
1264/*****************************************************************************/ 2013/*****************************************************************************/
1265 2014
2015#if EV_USE_IOCP
2016# include "ev_iocp.c"
2017#endif
1266#if EV_USE_PORT 2018#if EV_USE_PORT
1267# include "ev_port.c" 2019# include "ev_port.c"
1268#endif 2020#endif
1269#if EV_USE_KQUEUE 2021#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 2022# include "ev_kqueue.c"
… …
1277#endif 2029#endif
1278#if EV_USE_SELECT 2030#if EV_USE_SELECT
1279# include "ev_select.c" 2031# include "ev_select.c"
1280#endif 2032#endif
1281 2033
1282int 2034int ecb_cold
1283ev_version_major (void) 2035ev_version_major (void)
1284{ 2036{
1285 return EV_VERSION_MAJOR; 2037 return EV_VERSION_MAJOR;
1286} 2038}
1287 2039
1288int 2040int ecb_cold
1289ev_version_minor (void) 2041ev_version_minor (void)
1290{ 2042{
1291 return EV_VERSION_MINOR; 2043 return EV_VERSION_MINOR;
1292} 2044}
1293 2045
1294/* 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 */
1295int inline_size 2047int inline_size ecb_cold
1296enable_secure (void) 2048enable_secure (void)
1297{ 2049{
1298#ifdef _WIN32 2050#ifdef _WIN32
1299 return 0; 2051 return 0;
1300#else 2052#else
1301 return getuid () != geteuid () 2053 return getuid () != geteuid ()
1302 || getgid () != getegid (); 2054 || getgid () != getegid ();
1303#endif 2055#endif
1304} 2056}
1305 2057
1306unsigned int 2058unsigned int ecb_cold
1307ev_supported_backends (void) 2059ev_supported_backends (void)
1308{ 2060{
1309 unsigned int flags = 0; 2061 unsigned int flags = 0;
1310 2062
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2067 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1316 2068
1317 return flags; 2069 return flags;
1318} 2070}
1319 2071
1320unsigned int 2072unsigned int ecb_cold
1321ev_recommended_backends (void) 2073ev_recommended_backends (void)
1322{ 2074{
1323 unsigned int flags = ev_supported_backends (); 2075 unsigned int flags = ev_supported_backends ();
1324 2076
1325#ifndef __NetBSD__ 2077#ifndef __NetBSD__
… …
1330#ifdef __APPLE__ 2082#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 2083 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2084 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 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 */
1334#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
1335 2090
1336 return flags; 2091 return flags;
1337} 2092}
1338 2093
1339unsigned int 2094unsigned int ecb_cold
1340ev_embeddable_backends (void) 2095ev_embeddable_backends (void)
1341{ 2096{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1343 2098
1344 /* 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 */
1345 /* please fix it and tell me how to detect the fix */ 2100 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1346 flags &= ~EVBACKEND_EPOLL; 2101 flags &= ~EVBACKEND_EPOLL;
1347 2102
1348 return flags; 2103 return flags;
1349} 2104}
1350 2105
1351unsigned int 2106unsigned int
1352ev_backend (EV_P) 2107ev_backend (EV_P)
1353{ 2108{
1354 return backend; 2109 return backend;
1355} 2110}
1356 2111
2112#if EV_FEATURE_API
1357unsigned int 2113unsigned int
1358ev_loop_count (EV_P) 2114ev_iteration (EV_P)
1359{ 2115{
1360 return loop_count; 2116 return loop_count;
1361} 2117}
1362 2118
1363unsigned int 2119unsigned int
1364ev_loop_depth (EV_P) 2120ev_depth (EV_P)
1365{ 2121{
1366 return loop_depth; 2122 return loop_depth;
1367} 2123}
1368 2124
1369void 2125void
… …
1376ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1377{ 2133{
1378 timeout_blocktime = interval; 2134 timeout_blocktime = interval;
1379} 2135}
1380 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
1381/* initialise a loop structure, must be zero-initialised */ 2163/* initialise a loop structure, must be zero-initialised */
1382static void noinline 2164static void noinline ecb_cold
1383loop_init (EV_P_ unsigned int flags) 2165loop_init (EV_P_ unsigned int flags)
1384{ 2166{
1385 if (!backend) 2167 if (!backend)
1386 { 2168 {
2169 origflags = flags;
2170
1387#if EV_USE_REALTIME 2171#if EV_USE_REALTIME
1388 if (!have_realtime) 2172 if (!have_realtime)
1389 { 2173 {
1390 struct timespec ts; 2174 struct timespec ts;
1391 2175
… …
1402 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2186 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1403 have_monotonic = 1; 2187 have_monotonic = 1;
1404 } 2188 }
1405#endif 2189#endif
1406 2190
1407 ev_rt_now = ev_time ();
1408 mn_now = get_clock ();
1409 now_floor = mn_now;
1410 rtmn_diff = ev_rt_now - mn_now;
1411
1412 io_blocktime = 0.;
1413 timeout_blocktime = 0.;
1414 backend = 0;
1415 backend_fd = -1;
1416 gotasync = 0;
1417#if EV_USE_INOTIFY
1418 fs_fd = -2;
1419#endif
1420
1421 /* pid check not overridable via env */ 2191 /* pid check not overridable via env */
1422#ifndef _WIN32 2192#ifndef _WIN32
1423 if (flags & EVFLAG_FORKCHECK) 2193 if (flags & EVFLAG_FORKCHECK)
1424 curpid = getpid (); 2194 curpid = getpid ();
1425#endif 2195#endif
… …
1427 if (!(flags & EVFLAG_NOENV) 2197 if (!(flags & EVFLAG_NOENV)
1428 && !enable_secure () 2198 && !enable_secure ()
1429 && getenv ("LIBEV_FLAGS")) 2199 && getenv ("LIBEV_FLAGS"))
1430 flags = atoi (getenv ("LIBEV_FLAGS")); 2200 flags = atoi (getenv ("LIBEV_FLAGS"));
1431 2201
1432 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))
1433 flags |= ev_recommended_backends (); 2228 flags |= ev_recommended_backends ();
1434 2229
2230#if EV_USE_IOCP
2231 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2232#endif
1435#if EV_USE_PORT 2233#if EV_USE_PORT
1436 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2234 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1437#endif 2235#endif
1438#if EV_USE_KQUEUE 2236#if EV_USE_KQUEUE
1439 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2237 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1448 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2246 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1449#endif 2247#endif
1450 2248
1451 ev_prepare_init (&pending_w, pendingcb); 2249 ev_prepare_init (&pending_w, pendingcb);
1452 2250
2251#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1453 ev_init (&pipe_w, pipecb); 2252 ev_init (&pipe_w, pipecb);
1454 ev_set_priority (&pipe_w, EV_MAXPRI); 2253 ev_set_priority (&pipe_w, EV_MAXPRI);
2254#endif
1455 } 2255 }
1456} 2256}
1457 2257
1458/* free up a loop structure */ 2258/* free up a loop structure */
1459static void noinline 2259void ecb_cold
1460loop_destroy (EV_P) 2260ev_loop_destroy (EV_P)
1461{ 2261{
1462 int i; 2262 int i;
1463 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
1464 if (ev_is_active (&pipe_w)) 2287 if (ev_is_active (&pipe_w))
1465 { 2288 {
1466 ev_ref (EV_A); /* signal watcher */ 2289 /*ev_ref (EV_A);*/
1467 ev_io_stop (EV_A_ &pipe_w); 2290 /*ev_io_stop (EV_A_ &pipe_w);*/
1468 2291
1469#if EV_USE_EVENTFD 2292#if EV_USE_EVENTFD
1470 if (evfd >= 0) 2293 if (evfd >= 0)
1471 close (evfd); 2294 close (evfd);
1472#endif 2295#endif
1473 2296
1474 if (evpipe [0] >= 0) 2297 if (evpipe [0] >= 0)
1475 { 2298 {
1476 close (evpipe [0]); 2299 EV_WIN32_CLOSE_FD (evpipe [0]);
1477 close (evpipe [1]); 2300 EV_WIN32_CLOSE_FD (evpipe [1]);
1478 } 2301 }
1479 } 2302 }
2303
2304#if EV_USE_SIGNALFD
2305 if (ev_is_active (&sigfd_w))
2306 close (sigfd);
2307#endif
1480 2308
1481#if EV_USE_INOTIFY 2309#if EV_USE_INOTIFY
1482 if (fs_fd >= 0) 2310 if (fs_fd >= 0)
1483 close (fs_fd); 2311 close (fs_fd);
1484#endif 2312#endif
1485 2313
1486 if (backend_fd >= 0) 2314 if (backend_fd >= 0)
1487 close (backend_fd); 2315 close (backend_fd);
1488 2316
2317#if EV_USE_IOCP
2318 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2319#endif
1489#if EV_USE_PORT 2320#if EV_USE_PORT
1490 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2321 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1491#endif 2322#endif
1492#if EV_USE_KQUEUE 2323#if EV_USE_KQUEUE
1493 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2324 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1508#if EV_IDLE_ENABLE 2339#if EV_IDLE_ENABLE
1509 array_free (idle, [i]); 2340 array_free (idle, [i]);
1510#endif 2341#endif
1511 } 2342 }
1512 2343
1513 ev_free (anfds); anfdmax = 0; 2344 ev_free (anfds); anfds = 0; anfdmax = 0;
1514 2345
1515 /* have to use the microsoft-never-gets-it-right macro */ 2346 /* have to use the microsoft-never-gets-it-right macro */
1516 array_free (rfeed, EMPTY); 2347 array_free (rfeed, EMPTY);
1517 array_free (fdchange, EMPTY); 2348 array_free (fdchange, EMPTY);
1518 array_free (timer, EMPTY); 2349 array_free (timer, EMPTY);
… …
1520 array_free (periodic, EMPTY); 2351 array_free (periodic, EMPTY);
1521#endif 2352#endif
1522#if EV_FORK_ENABLE 2353#if EV_FORK_ENABLE
1523 array_free (fork, EMPTY); 2354 array_free (fork, EMPTY);
1524#endif 2355#endif
2356#if EV_CLEANUP_ENABLE
2357 array_free (cleanup, EMPTY);
2358#endif
1525 array_free (prepare, EMPTY); 2359 array_free (prepare, EMPTY);
1526 array_free (check, EMPTY); 2360 array_free (check, EMPTY);
1527#if EV_ASYNC_ENABLE 2361#if EV_ASYNC_ENABLE
1528 array_free (async, EMPTY); 2362 array_free (async, EMPTY);
1529#endif 2363#endif
1530 2364
1531 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
1532} 2375}
1533 2376
1534#if EV_USE_INOTIFY 2377#if EV_USE_INOTIFY
1535inline_size void infy_fork (EV_P); 2378inline_size void infy_fork (EV_P);
1536#endif 2379#endif
… …
1551 infy_fork (EV_A); 2394 infy_fork (EV_A);
1552#endif 2395#endif
1553 2396
1554 if (ev_is_active (&pipe_w)) 2397 if (ev_is_active (&pipe_w))
1555 { 2398 {
1556 /* this "locks" the handlers against writing to the pipe */ 2399 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1557 /* while we modify the fd vars */
1558 gotsig = 1;
1559#if EV_ASYNC_ENABLE
1560 gotasync = 1;
1561#endif
1562 2400
1563 ev_ref (EV_A); 2401 ev_ref (EV_A);
1564 ev_io_stop (EV_A_ &pipe_w); 2402 ev_io_stop (EV_A_ &pipe_w);
1565 2403
1566#if EV_USE_EVENTFD 2404#if EV_USE_EVENTFD
… …
1568 close (evfd); 2406 close (evfd);
1569#endif 2407#endif
1570 2408
1571 if (evpipe [0] >= 0) 2409 if (evpipe [0] >= 0)
1572 { 2410 {
1573 close (evpipe [0]); 2411 EV_WIN32_CLOSE_FD (evpipe [0]);
1574 close (evpipe [1]); 2412 EV_WIN32_CLOSE_FD (evpipe [1]);
1575 } 2413 }
1576 2414
2415#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1577 evpipe_init (EV_A); 2416 evpipe_init (EV_A);
1578 /* now iterate over everything, in case we missed something */ 2417 /* now iterate over everything, in case we missed something */
1579 pipecb (EV_A_ &pipe_w, EV_READ); 2418 pipecb (EV_A_ &pipe_w, EV_READ);
2419#endif
1580 } 2420 }
1581 2421
1582 postfork = 0; 2422 postfork = 0;
1583} 2423}
1584 2424
1585#if EV_MULTIPLICITY 2425#if EV_MULTIPLICITY
1586 2426
1587struct ev_loop * 2427struct ev_loop * ecb_cold
1588ev_loop_new (unsigned int flags) 2428ev_loop_new (unsigned int flags)
1589{ 2429{
1590 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));
1591 2431
1592 memset (loop, 0, sizeof (struct ev_loop)); 2432 memset (EV_A, 0, sizeof (struct ev_loop));
1593
1594 loop_init (EV_A_ flags); 2433 loop_init (EV_A_ flags);
1595 2434
1596 if (ev_backend (EV_A)) 2435 if (ev_backend (EV_A))
1597 return loop; 2436 return EV_A;
1598 2437
2438 ev_free (EV_A);
1599 return 0; 2439 return 0;
1600} 2440}
1601 2441
1602void 2442#endif /* multiplicity */
1603ev_loop_destroy (EV_P)
1604{
1605 loop_destroy (EV_A);
1606 ev_free (loop);
1607}
1608
1609void
1610ev_loop_fork (EV_P)
1611{
1612 postfork = 1; /* must be in line with ev_default_fork */
1613}
1614 2443
1615#if EV_VERIFY 2444#if EV_VERIFY
1616static void noinline 2445static void noinline ecb_cold
1617verify_watcher (EV_P_ W w) 2446verify_watcher (EV_P_ W w)
1618{ 2447{
1619 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));
1620 2449
1621 if (w->pending) 2450 if (w->pending)
1622 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));
1623} 2452}
1624 2453
1625static void noinline 2454static void noinline ecb_cold
1626verify_heap (EV_P_ ANHE *heap, int N) 2455verify_heap (EV_P_ ANHE *heap, int N)
1627{ 2456{
1628 int i; 2457 int i;
1629 2458
1630 for (i = HEAP0; i < N + HEAP0; ++i) 2459 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1635 2464
1636 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2465 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1637 } 2466 }
1638} 2467}
1639 2468
1640static void noinline 2469static void noinline ecb_cold
1641array_verify (EV_P_ W *ws, int cnt) 2470array_verify (EV_P_ W *ws, int cnt)
1642{ 2471{
1643 while (cnt--) 2472 while (cnt--)
1644 { 2473 {
1645 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2474 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1646 verify_watcher (EV_A_ ws [cnt]); 2475 verify_watcher (EV_A_ ws [cnt]);
1647 } 2476 }
1648} 2477}
1649#endif 2478#endif
1650 2479
1651void 2480#if EV_FEATURE_API
2481void ecb_cold
1652ev_loop_verify (EV_P) 2482ev_verify (EV_P)
1653{ 2483{
1654#if EV_VERIFY 2484#if EV_VERIFY
1655 int i; 2485 int i;
1656 WL w; 2486 WL w;
1657 2487
… …
1691#if EV_FORK_ENABLE 2521#if EV_FORK_ENABLE
1692 assert (forkmax >= forkcnt); 2522 assert (forkmax >= forkcnt);
1693 array_verify (EV_A_ (W *)forks, forkcnt); 2523 array_verify (EV_A_ (W *)forks, forkcnt);
1694#endif 2524#endif
1695 2525
2526#if EV_CLEANUP_ENABLE
2527 assert (cleanupmax >= cleanupcnt);
2528 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2529#endif
2530
1696#if EV_ASYNC_ENABLE 2531#if EV_ASYNC_ENABLE
1697 assert (asyncmax >= asynccnt); 2532 assert (asyncmax >= asynccnt);
1698 array_verify (EV_A_ (W *)asyncs, asynccnt); 2533 array_verify (EV_A_ (W *)asyncs, asynccnt);
1699#endif 2534#endif
1700 2535
2536#if EV_PREPARE_ENABLE
1701 assert (preparemax >= preparecnt); 2537 assert (preparemax >= preparecnt);
1702 array_verify (EV_A_ (W *)prepares, preparecnt); 2538 array_verify (EV_A_ (W *)prepares, preparecnt);
2539#endif
1703 2540
2541#if EV_CHECK_ENABLE
1704 assert (checkmax >= checkcnt); 2542 assert (checkmax >= checkcnt);
1705 array_verify (EV_A_ (W *)checks, checkcnt); 2543 array_verify (EV_A_ (W *)checks, checkcnt);
2544#endif
1706 2545
1707# if 0 2546# if 0
2547#if EV_CHILD_ENABLE
1708 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)
1709 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2549 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2550#endif
1710# endif 2551# endif
1711#endif 2552#endif
1712} 2553}
1713 2554#endif
1714#endif /* multiplicity */
1715 2555
1716#if EV_MULTIPLICITY 2556#if EV_MULTIPLICITY
1717struct ev_loop * 2557struct ev_loop * ecb_cold
1718ev_default_loop_init (unsigned int flags)
1719#else 2558#else
1720int 2559int
2560#endif
1721ev_default_loop (unsigned int flags) 2561ev_default_loop (unsigned int flags)
1722#endif
1723{ 2562{
1724 if (!ev_default_loop_ptr) 2563 if (!ev_default_loop_ptr)
1725 { 2564 {
1726#if EV_MULTIPLICITY 2565#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2566 EV_P = ev_default_loop_ptr = &default_loop_struct;
1728#else 2567#else
1729 ev_default_loop_ptr = 1; 2568 ev_default_loop_ptr = 1;
1730#endif 2569#endif
1731 2570
1732 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1733 2572
1734 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1735 { 2574 {
1736#ifndef _WIN32 2575#if EV_CHILD_ENABLE
1737 ev_signal_init (&childev, childcb, SIGCHLD); 2576 ev_signal_init (&childev, childcb, SIGCHLD);
1738 ev_set_priority (&childev, EV_MAXPRI); 2577 ev_set_priority (&childev, EV_MAXPRI);
1739 ev_signal_start (EV_A_ &childev); 2578 ev_signal_start (EV_A_ &childev);
1740 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2579 ev_unref (EV_A); /* child watcher should not keep loop alive */
1741#endif 2580#endif
… …
1746 2585
1747 return ev_default_loop_ptr; 2586 return ev_default_loop_ptr;
1748} 2587}
1749 2588
1750void 2589void
1751ev_default_destroy (void) 2590ev_loop_fork (EV_P)
1752{ 2591{
1753#if EV_MULTIPLICITY
1754 struct ev_loop *loop = ev_default_loop_ptr;
1755#endif
1756
1757 ev_default_loop_ptr = 0;
1758
1759#ifndef _WIN32
1760 ev_ref (EV_A); /* child watcher */
1761 ev_signal_stop (EV_A_ &childev);
1762#endif
1763
1764 loop_destroy (EV_A);
1765}
1766
1767void
1768ev_default_fork (void)
1769{
1770#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr;
1772#endif
1773
1774 postfork = 1; /* must be in line with ev_loop_fork */ 2592 postfork = 1; /* must be in line with ev_default_fork */
1775} 2593}
1776 2594
1777/*****************************************************************************/ 2595/*****************************************************************************/
1778 2596
1779void 2597void
1780ev_invoke (EV_P_ void *w, int revents) 2598ev_invoke (EV_P_ void *w, int revents)
1781{ 2599{
1782 EV_CB_INVOKE ((W)w, revents); 2600 EV_CB_INVOKE ((W)w, revents);
1783} 2601}
1784 2602
1785inline_speed void 2603unsigned int
1786call_pending (EV_P) 2604ev_pending_count (EV_P)
2605{
2606 int pri;
2607 unsigned int count = 0;
2608
2609 for (pri = NUMPRI; pri--; )
2610 count += pendingcnt [pri];
2611
2612 return count;
2613}
2614
2615void noinline
2616ev_invoke_pending (EV_P)
1787{ 2617{
1788 int pri; 2618 int pri;
1789 2619
1790 for (pri = NUMPRI; pri--; ) 2620 for (pri = NUMPRI; pri--; )
1791 while (pendingcnt [pri]) 2621 while (pendingcnt [pri])
1792 { 2622 {
1793 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2623 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1794
1795 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1796 /* ^ this is no longer true, as pending_w could be here */
1797 2624
1798 p->w->pending = 0; 2625 p->w->pending = 0;
1799 EV_CB_INVOKE (p->w, p->events); 2626 EV_CB_INVOKE (p->w, p->events);
1800 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
1801 } 2628 }
… …
1858 EV_FREQUENT_CHECK; 2685 EV_FREQUENT_CHECK;
1859 feed_reverse (EV_A_ (W)w); 2686 feed_reverse (EV_A_ (W)w);
1860 } 2687 }
1861 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2688 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1862 2689
1863 feed_reverse_done (EV_A_ EV_TIMEOUT); 2690 feed_reverse_done (EV_A_ EV_TIMER);
1864 } 2691 }
1865} 2692}
1866 2693
1867#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
1868/* make periodics pending */ 2720/* make periodics pending */
1869inline_size void 2721inline_size void
1870periodics_reify (EV_P) 2722periodics_reify (EV_P)
1871{ 2723{
1872 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
… …
1891 ANHE_at_cache (periodics [HEAP0]); 2743 ANHE_at_cache (periodics [HEAP0]);
1892 downheap (periodics, periodiccnt, HEAP0); 2744 downheap (periodics, periodiccnt, HEAP0);
1893 } 2745 }
1894 else if (w->interval) 2746 else if (w->interval)
1895 { 2747 {
1896 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2748 periodic_recalc (EV_A_ w);
1897 /* if next trigger time is not sufficiently in the future, put it there */
1898 /* this might happen because of floating point inexactness */
1899 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1900 {
1901 ev_at (w) += w->interval;
1902
1903 /* if interval is unreasonably low we might still have a time in the past */
1904 /* so correct this. this will make the periodic very inexact, but the user */
1905 /* has effectively asked to get triggered more often than possible */
1906 if (ev_at (w) < ev_rt_now)
1907 ev_at (w) = ev_rt_now;
1908 }
1909
1910 ANHE_at_cache (periodics [HEAP0]); 2749 ANHE_at_cache (periodics [HEAP0]);
1911 downheap (periodics, periodiccnt, HEAP0); 2750 downheap (periodics, periodiccnt, HEAP0);
1912 } 2751 }
1913 else 2752 else
1914 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2753 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1921 feed_reverse_done (EV_A_ EV_PERIODIC); 2760 feed_reverse_done (EV_A_ EV_PERIODIC);
1922 } 2761 }
1923} 2762}
1924 2763
1925/* simply recalculate all periodics */ 2764/* simply recalculate all periodics */
1926/* 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? */
1927static void noinline 2766static void noinline ecb_cold
1928periodics_reschedule (EV_P) 2767periodics_reschedule (EV_P)
1929{ 2768{
1930 int i; 2769 int i;
1931 2770
1932 /* adjust periodics after time jump */ 2771 /* adjust periodics after time jump */
… …
1935 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2774 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1936 2775
1937 if (w->reschedule_cb) 2776 if (w->reschedule_cb)
1938 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2777 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1939 else if (w->interval) 2778 else if (w->interval)
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2779 periodic_recalc (EV_A_ w);
1941 2780
1942 ANHE_at_cache (periodics [i]); 2781 ANHE_at_cache (periodics [i]);
1943 } 2782 }
1944 2783
1945 reheap (periodics, periodiccnt); 2784 reheap (periodics, periodiccnt);
1946} 2785}
1947#endif 2786#endif
1948 2787
1949/* adjust all timers by a given offset */ 2788/* adjust all timers by a given offset */
1950static void noinline 2789static void noinline ecb_cold
1951timers_reschedule (EV_P_ ev_tstamp adjust) 2790timers_reschedule (EV_P_ ev_tstamp adjust)
1952{ 2791{
1953 int i; 2792 int i;
1954 2793
1955 for (i = 0; i < timercnt; ++i) 2794 for (i = 0; i < timercnt; ++i)
… …
1959 ANHE_at_cache (*he); 2798 ANHE_at_cache (*he);
1960 } 2799 }
1961} 2800}
1962 2801
1963/* fetch new monotonic and realtime times from the kernel */ 2802/* fetch new monotonic and realtime times from the kernel */
1964/* also detetc if there was a timejump, and act accordingly */ 2803/* also detect if there was a timejump, and act accordingly */
1965inline_speed void 2804inline_speed void
1966time_update (EV_P_ ev_tstamp max_block) 2805time_update (EV_P_ ev_tstamp max_block)
1967{ 2806{
1968#if EV_USE_MONOTONIC 2807#if EV_USE_MONOTONIC
1969 if (expect_true (have_monotonic)) 2808 if (expect_true (have_monotonic))
… …
1992 * 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
1993 * in the unlikely event of having been preempted here. 2832 * in the unlikely event of having been preempted here.
1994 */ 2833 */
1995 for (i = 4; --i; ) 2834 for (i = 4; --i; )
1996 { 2835 {
2836 ev_tstamp diff;
1997 rtmn_diff = ev_rt_now - mn_now; 2837 rtmn_diff = ev_rt_now - mn_now;
1998 2838
2839 diff = odiff - rtmn_diff;
2840
1999 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2841 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2000 return; /* all is well */ 2842 return; /* all is well */
2001 2843
2002 ev_rt_now = ev_time (); 2844 ev_rt_now = ev_time ();
2003 mn_now = get_clock (); 2845 mn_now = get_clock ();
2004 now_floor = mn_now; 2846 now_floor = mn_now;
… …
2027 mn_now = ev_rt_now; 2869 mn_now = ev_rt_now;
2028 } 2870 }
2029} 2871}
2030 2872
2031void 2873void
2032ev_loop (EV_P_ int flags) 2874ev_run (EV_P_ int flags)
2033{ 2875{
2876#if EV_FEATURE_API
2034 ++loop_depth; 2877 ++loop_depth;
2878#endif
2035 2879
2880 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2881
2036 loop_done = EVUNLOOP_CANCEL; 2882 loop_done = EVBREAK_CANCEL;
2037 2883
2038 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2884 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2039 2885
2040 do 2886 do
2041 { 2887 {
2042#if EV_VERIFY >= 2 2888#if EV_VERIFY >= 2
2043 ev_loop_verify (EV_A); 2889 ev_verify (EV_A);
2044#endif 2890#endif
2045 2891
2046#ifndef _WIN32 2892#ifndef _WIN32
2047 if (expect_false (curpid)) /* penalise the forking check even more */ 2893 if (expect_false (curpid)) /* penalise the forking check even more */
2048 if (expect_false (getpid () != curpid)) 2894 if (expect_false (getpid () != curpid))
… …
2056 /* we might have forked, so queue fork handlers */ 2902 /* we might have forked, so queue fork handlers */
2057 if (expect_false (postfork)) 2903 if (expect_false (postfork))
2058 if (forkcnt) 2904 if (forkcnt)
2059 { 2905 {
2060 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2906 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2061 call_pending (EV_A); 2907 EV_INVOKE_PENDING;
2062 } 2908 }
2063#endif 2909#endif
2064 2910
2911#if EV_PREPARE_ENABLE
2065 /* queue prepare watchers (and execute them) */ 2912 /* queue prepare watchers (and execute them) */
2066 if (expect_false (preparecnt)) 2913 if (expect_false (preparecnt))
2067 { 2914 {
2068 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2915 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2069 call_pending (EV_A); 2916 EV_INVOKE_PENDING;
2070 } 2917 }
2918#endif
2919
2920 if (expect_false (loop_done))
2921 break;
2071 2922
2072 /* we might have forked, so reify kernel state if necessary */ 2923 /* we might have forked, so reify kernel state if necessary */
2073 if (expect_false (postfork)) 2924 if (expect_false (postfork))
2074 loop_fork (EV_A); 2925 loop_fork (EV_A);
2075 2926
… …
2079 /* calculate blocking time */ 2930 /* calculate blocking time */
2080 { 2931 {
2081 ev_tstamp waittime = 0.; 2932 ev_tstamp waittime = 0.;
2082 ev_tstamp sleeptime = 0.; 2933 ev_tstamp sleeptime = 0.;
2083 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
2084 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2946 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2085 { 2947 {
2086 /* remember old timestamp for io_blocktime calculation */
2087 ev_tstamp prev_mn_now = mn_now;
2088
2089 /* update time to cancel out callback processing overhead */
2090 time_update (EV_A_ 1e100);
2091
2092 waittime = MAX_BLOCKTIME; 2948 waittime = MAX_BLOCKTIME;
2093 2949
2094 if (timercnt) 2950 if (timercnt)
2095 { 2951 {
2096 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2952 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2097 if (waittime > to) waittime = to; 2953 if (waittime > to) waittime = to;
2098 } 2954 }
2099 2955
2100#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
2101 if (periodiccnt) 2957 if (periodiccnt)
2102 { 2958 {
2103 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2959 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2104 if (waittime > to) waittime = to; 2960 if (waittime > to) waittime = to;
2105 } 2961 }
2106#endif 2962#endif
2107 2963
2108 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2964 /* don't let timeouts decrease the waittime below timeout_blocktime */
2109 if (expect_false (waittime < timeout_blocktime)) 2965 if (expect_false (waittime < timeout_blocktime))
2110 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;
2111 2972
2112 /* extra check because io_blocktime is commonly 0 */ 2973 /* extra check because io_blocktime is commonly 0 */
2113 if (expect_false (io_blocktime)) 2974 if (expect_false (io_blocktime))
2114 { 2975 {
2115 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2976 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2116 2977
2117 if (sleeptime > waittime - backend_fudge) 2978 if (sleeptime > waittime - backend_mintime)
2118 sleeptime = waittime - backend_fudge; 2979 sleeptime = waittime - backend_mintime;
2119 2980
2120 if (expect_true (sleeptime > 0.)) 2981 if (expect_true (sleeptime > 0.))
2121 { 2982 {
2122 ev_sleep (sleeptime); 2983 ev_sleep (sleeptime);
2123 waittime -= sleeptime; 2984 waittime -= sleeptime;
2124 } 2985 }
2125 } 2986 }
2126 } 2987 }
2127 2988
2989#if EV_FEATURE_API
2128 ++loop_count; 2990 ++loop_count;
2991#endif
2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2129 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 optimisation, 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
2130 3004
2131 /* update ev_rt_now, do magic */ 3005 /* update ev_rt_now, do magic */
2132 time_update (EV_A_ waittime + sleeptime); 3006 time_update (EV_A_ waittime + sleeptime);
2133 } 3007 }
2134 3008
… …
2141#if EV_IDLE_ENABLE 3015#if EV_IDLE_ENABLE
2142 /* queue idle watchers unless other events are pending */ 3016 /* queue idle watchers unless other events are pending */
2143 idle_reify (EV_A); 3017 idle_reify (EV_A);
2144#endif 3018#endif
2145 3019
3020#if EV_CHECK_ENABLE
2146 /* queue check watchers, to be executed first */ 3021 /* queue check watchers, to be executed first */
2147 if (expect_false (checkcnt)) 3022 if (expect_false (checkcnt))
2148 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3024#endif
2149 3025
2150 call_pending (EV_A); 3026 EV_INVOKE_PENDING;
2151 } 3027 }
2152 while (expect_true ( 3028 while (expect_true (
2153 activecnt 3029 activecnt
2154 && !loop_done 3030 && !loop_done
2155 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3031 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2156 )); 3032 ));
2157 3033
2158 if (loop_done == EVUNLOOP_ONE) 3034 if (loop_done == EVBREAK_ONE)
2159 loop_done = EVUNLOOP_CANCEL; 3035 loop_done = EVBREAK_CANCEL;
2160 3036
3037#if EV_FEATURE_API
2161 --loop_depth; 3038 --loop_depth;
3039#endif
2162} 3040}
2163 3041
2164void 3042void
2165ev_unloop (EV_P_ int how) 3043ev_break (EV_P_ int how)
2166{ 3044{
2167 loop_done = how; 3045 loop_done = how;
2168} 3046}
2169 3047
2170void 3048void
… …
2217inline_size void 3095inline_size void
2218wlist_del (WL *head, WL elem) 3096wlist_del (WL *head, WL elem)
2219{ 3097{
2220 while (*head) 3098 while (*head)
2221 { 3099 {
2222 if (*head == elem) 3100 if (expect_true (*head == elem))
2223 { 3101 {
2224 *head = elem->next; 3102 *head = elem->next;
2225 return; 3103 break;
2226 } 3104 }
2227 3105
2228 head = &(*head)->next; 3106 head = &(*head)->next;
2229 } 3107 }
2230} 3108}
… …
2258} 3136}
2259 3137
2260inline_size void 3138inline_size void
2261pri_adjust (EV_P_ W w) 3139pri_adjust (EV_P_ W w)
2262{ 3140{
2263 int pri = w->priority; 3141 int pri = ev_priority (w);
2264 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3142 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2265 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3143 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2266 w->priority = pri; 3144 ev_set_priority (w, pri);
2267} 3145}
2268 3146
2269inline_speed void 3147inline_speed void
2270ev_start (EV_P_ W w, int active) 3148ev_start (EV_P_ W w, int active)
2271{ 3149{
… …
2290 3168
2291 if (expect_false (ev_is_active (w))) 3169 if (expect_false (ev_is_active (w)))
2292 return; 3170 return;
2293 3171
2294 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3172 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2295 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))));
2296 3174
2297 EV_FREQUENT_CHECK; 3175 EV_FREQUENT_CHECK;
2298 3176
2299 ev_start (EV_A_ (W)w, 1); 3177 ev_start (EV_A_ (W)w, 1);
2300 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3178 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2301 wlist_add (&anfds[fd].head, (WL)w); 3179 wlist_add (&anfds[fd].head, (WL)w);
2302 3180
2303 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3181 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2304 w->events &= ~EV__IOFDSET; 3182 w->events &= ~EV__IOFDSET;
2305 3183
2306 EV_FREQUENT_CHECK; 3184 EV_FREQUENT_CHECK;
2307} 3185}
2308 3186
… …
2318 EV_FREQUENT_CHECK; 3196 EV_FREQUENT_CHECK;
2319 3197
2320 wlist_del (&anfds[w->fd].head, (WL)w); 3198 wlist_del (&anfds[w->fd].head, (WL)w);
2321 ev_stop (EV_A_ (W)w); 3199 ev_stop (EV_A_ (W)w);
2322 3200
2323 fd_change (EV_A_ w->fd, 1); 3201 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2324 3202
2325 EV_FREQUENT_CHECK; 3203 EV_FREQUENT_CHECK;
2326} 3204}
2327 3205
2328void noinline 3206void noinline
… …
2370 timers [active] = timers [timercnt + HEAP0]; 3248 timers [active] = timers [timercnt + HEAP0];
2371 adjustheap (timers, timercnt, active); 3249 adjustheap (timers, timercnt, active);
2372 } 3250 }
2373 } 3251 }
2374 3252
2375 EV_FREQUENT_CHECK;
2376
2377 ev_at (w) -= mn_now; 3253 ev_at (w) -= mn_now;
2378 3254
2379 ev_stop (EV_A_ (W)w); 3255 ev_stop (EV_A_ (W)w);
3256
3257 EV_FREQUENT_CHECK;
2380} 3258}
2381 3259
2382void noinline 3260void noinline
2383ev_timer_again (EV_P_ ev_timer *w) 3261ev_timer_again (EV_P_ ev_timer *w)
2384{ 3262{
… …
2402 } 3280 }
2403 3281
2404 EV_FREQUENT_CHECK; 3282 EV_FREQUENT_CHECK;
2405} 3283}
2406 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
2407#if EV_PERIODIC_ENABLE 3291#if EV_PERIODIC_ENABLE
2408void noinline 3292void noinline
2409ev_periodic_start (EV_P_ ev_periodic *w) 3293ev_periodic_start (EV_P_ ev_periodic *w)
2410{ 3294{
2411 if (expect_false (ev_is_active (w))) 3295 if (expect_false (ev_is_active (w)))
… …
2414 if (w->reschedule_cb) 3298 if (w->reschedule_cb)
2415 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3299 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2416 else if (w->interval) 3300 else if (w->interval)
2417 { 3301 {
2418 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.));
2419 /* this formula differs from the one in periodic_reify because we do not always round up */ 3303 periodic_recalc (EV_A_ w);
2420 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2421 } 3304 }
2422 else 3305 else
2423 ev_at (w) = w->offset; 3306 ev_at (w) = w->offset;
2424 3307
2425 EV_FREQUENT_CHECK; 3308 EV_FREQUENT_CHECK;
… …
2457 periodics [active] = periodics [periodiccnt + HEAP0]; 3340 periodics [active] = periodics [periodiccnt + HEAP0];
2458 adjustheap (periodics, periodiccnt, active); 3341 adjustheap (periodics, periodiccnt, active);
2459 } 3342 }
2460 } 3343 }
2461 3344
2462 EV_FREQUENT_CHECK;
2463
2464 ev_stop (EV_A_ (W)w); 3345 ev_stop (EV_A_ (W)w);
3346
3347 EV_FREQUENT_CHECK;
2465} 3348}
2466 3349
2467void noinline 3350void noinline
2468ev_periodic_again (EV_P_ ev_periodic *w) 3351ev_periodic_again (EV_P_ ev_periodic *w)
2469{ 3352{
… …
2475 3358
2476#ifndef SA_RESTART 3359#ifndef SA_RESTART
2477# define SA_RESTART 0 3360# define SA_RESTART 0
2478#endif 3361#endif
2479 3362
3363#if EV_SIGNAL_ENABLE
3364
2480void noinline 3365void noinline
2481ev_signal_start (EV_P_ ev_signal *w) 3366ev_signal_start (EV_P_ ev_signal *w)
2482{ 3367{
2483#if EV_MULTIPLICITY
2484 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2485#endif
2486 if (expect_false (ev_is_active (w))) 3368 if (expect_false (ev_is_active (w)))
2487 return; 3369 return;
2488 3370
2489 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));
2490 3372
2491 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));
2492 3376
2493 EV_FREQUENT_CHECK; 3377 signals [w->signum - 1].loop = EV_A;
3378#endif
2494 3379
3380 EV_FREQUENT_CHECK;
3381
3382#if EV_USE_SIGNALFD
3383 if (sigfd == -2)
2495 { 3384 {
2496#ifndef _WIN32 3385 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2497 sigset_t full, prev; 3386 if (sigfd < 0 && errno == EINVAL)
2498 sigfillset (&full); 3387 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2499 sigprocmask (SIG_SETMASK, &full, &prev);
2500#endif
2501 3388
2502 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 */
2503 3392
2504#ifndef _WIN32 3393 sigemptyset (&sigfd_set);
2505 sigprocmask (SIG_SETMASK, &prev, 0); 3394
2506#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 }
2507 } 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
2508 3411
2509 ev_start (EV_A_ (W)w, 1); 3412 ev_start (EV_A_ (W)w, 1);
2510 wlist_add (&signals [w->signum - 1].head, (WL)w); 3413 wlist_add (&signals [w->signum - 1].head, (WL)w);
2511 3414
2512 if (!((WL)w)->next) 3415 if (!((WL)w)->next)
3416# if EV_USE_SIGNALFD
3417 if (sigfd < 0) /*TODO*/
3418# endif
2513 { 3419 {
2514#if _WIN32 3420# ifdef _WIN32
3421 evpipe_init (EV_A);
3422
2515 signal (w->signum, ev_sighandler); 3423 signal (w->signum, ev_sighandler);
2516#else 3424# else
2517 struct sigaction sa; 3425 struct sigaction sa;
3426
3427 evpipe_init (EV_A);
3428
2518 sa.sa_handler = ev_sighandler; 3429 sa.sa_handler = ev_sighandler;
2519 sigfillset (&sa.sa_mask); 3430 sigfillset (&sa.sa_mask);
2520 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 */
2521 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 }
2522#endif 3440#endif
2523 } 3441 }
2524 3442
2525 EV_FREQUENT_CHECK; 3443 EV_FREQUENT_CHECK;
2526} 3444}
2527 3445
2528void noinline 3446void noinline
… …
2536 3454
2537 wlist_del (&signals [w->signum - 1].head, (WL)w); 3455 wlist_del (&signals [w->signum - 1].head, (WL)w);
2538 ev_stop (EV_A_ (W)w); 3456 ev_stop (EV_A_ (W)w);
2539 3457
2540 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
2541 signal (w->signum, SIG_DFL); 3477 signal (w->signum, SIG_DFL);
3478 }
2542 3479
2543 EV_FREQUENT_CHECK; 3480 EV_FREQUENT_CHECK;
2544} 3481}
3482
3483#endif
3484
3485#if EV_CHILD_ENABLE
2545 3486
2546void 3487void
2547ev_child_start (EV_P_ ev_child *w) 3488ev_child_start (EV_P_ ev_child *w)
2548{ 3489{
2549#if EV_MULTIPLICITY 3490#if EV_MULTIPLICITY
… …
2553 return; 3494 return;
2554 3495
2555 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
2556 3497
2557 ev_start (EV_A_ (W)w, 1); 3498 ev_start (EV_A_ (W)w, 1);
2558 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3499 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2559 3500
2560 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2561} 3502}
2562 3503
2563void 3504void
… …
2567 if (expect_false (!ev_is_active (w))) 3508 if (expect_false (!ev_is_active (w)))
2568 return; 3509 return;
2569 3510
2570 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2571 3512
2572 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3513 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2573 ev_stop (EV_A_ (W)w); 3514 ev_stop (EV_A_ (W)w);
2574 3515
2575 EV_FREQUENT_CHECK; 3516 EV_FREQUENT_CHECK;
2576} 3517}
3518
3519#endif
2577 3520
2578#if EV_STAT_ENABLE 3521#if EV_STAT_ENABLE
2579 3522
2580# ifdef _WIN32 3523# ifdef _WIN32
2581# undef lstat 3524# undef lstat
… …
2587#define MIN_STAT_INTERVAL 0.1074891 3530#define MIN_STAT_INTERVAL 0.1074891
2588 3531
2589static 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);
2590 3533
2591#if EV_USE_INOTIFY 3534#if EV_USE_INOTIFY
2592# 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)
2593 3538
2594static void noinline 3539static void noinline
2595infy_add (EV_P_ ev_stat *w) 3540infy_add (EV_P_ ev_stat *w)
2596{ 3541{
2597 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);
2598 3543
2599 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 */
2600 { 3564 }
3565 else
3566 {
3567 /* can't use inotify, continue to stat */
2601 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3568 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2602 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2603 3569
2604 /* monitor some parent directory for speedup hints */ 3570 /* if path is not there, monitor some parent directory for speedup hints */
2605 /* 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, */
2606 /* but an efficiency issue only */ 3572 /* but an efficiency issue only */
2607 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3573 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2608 { 3574 {
2609 char path [4096]; 3575 char path [4096];
… …
2619 if (!pend || pend == path) 3585 if (!pend || pend == path)
2620 break; 3586 break;
2621 3587
2622 *pend = 0; 3588 *pend = 0;
2623 w->wd = inotify_add_watch (fs_fd, path, mask); 3589 w->wd = inotify_add_watch (fs_fd, path, mask);
2624 } 3590 }
2625 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3591 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2626 } 3592 }
2627 } 3593 }
2628 3594
2629 if (w->wd >= 0) 3595 if (w->wd >= 0)
2630 {
2631 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);
2632 3597
2633 /* now local changes will be tracked by inotify, but remote changes won't */ 3598 /* now re-arm timer, if required */
2634 /* unless the filesystem it known to be local, we therefore still poll */ 3599 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2635 /* also do poll on <2.6.25, but with normal frequency */
2636 struct statfs sfs;
2637
2638 if (fs_2625 && !statfs (w->path, &sfs))
2639 if (sfs.f_type == 0x1373 /* devfs */
2640 || sfs.f_type == 0xEF53 /* ext2/3 */
2641 || sfs.f_type == 0x3153464a /* jfs */
2642 || sfs.f_type == 0x52654973 /* reiser3 */
2643 || sfs.f_type == 0x01021994 /* tempfs */
2644 || sfs.f_type == 0x58465342 /* xfs */)
2645 return;
2646
2647 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2648 ev_timer_again (EV_A_ &w->timer); 3600 ev_timer_again (EV_A_ &w->timer);
2649 } 3601 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2650} 3602}
2651 3603
2652static void noinline 3604static void noinline
2653infy_del (EV_P_ ev_stat *w) 3605infy_del (EV_P_ ev_stat *w)
2654{ 3606{
… …
2657 3609
2658 if (wd < 0) 3610 if (wd < 0)
2659 return; 3611 return;
2660 3612
2661 w->wd = -2; 3613 w->wd = -2;
2662 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3614 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2663 wlist_del (&fs_hash [slot].head, (WL)w); 3615 wlist_del (&fs_hash [slot].head, (WL)w);
2664 3616
2665 /* remove this watcher, if others are watching it, they will rearm */ 3617 /* remove this watcher, if others are watching it, they will rearm */
2666 inotify_rm_watch (fs_fd, wd); 3618 inotify_rm_watch (fs_fd, wd);
2667} 3619}
… …
2669static void noinline 3621static void noinline
2670infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3622infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2671{ 3623{
2672 if (slot < 0) 3624 if (slot < 0)
2673 /* overflow, need to check for all hash slots */ 3625 /* overflow, need to check for all hash slots */
2674 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3626 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2675 infy_wd (EV_A_ slot, wd, ev); 3627 infy_wd (EV_A_ slot, wd, ev);
2676 else 3628 else
2677 { 3629 {
2678 WL w_; 3630 WL w_;
2679 3631
2680 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3632 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2681 { 3633 {
2682 ev_stat *w = (ev_stat *)w_; 3634 ev_stat *w = (ev_stat *)w_;
2683 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 */
2684 3636
2685 if (w->wd == wd || wd == -1) 3637 if (w->wd == wd || wd == -1)
2686 { 3638 {
2687 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3639 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2688 { 3640 {
2689 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);
2690 w->wd = -1; 3642 w->wd = -1;
2691 infy_add (EV_A_ w); /* re-add, no matter what */ 3643 infy_add (EV_A_ w); /* re-add, no matter what */
2692 } 3644 }
2693 3645
2694 stat_timer_cb (EV_A_ &w->timer, 0); 3646 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2699 3651
2700static void 3652static void
2701infy_cb (EV_P_ ev_io *w, int revents) 3653infy_cb (EV_P_ ev_io *w, int revents)
2702{ 3654{
2703 char buf [EV_INOTIFY_BUFSIZE]; 3655 char buf [EV_INOTIFY_BUFSIZE];
2704 struct inotify_event *ev = (struct inotify_event *)buf;
2705 int ofs; 3656 int ofs;
2706 int len = read (fs_fd, buf, sizeof (buf)); 3657 int len = read (fs_fd, buf, sizeof (buf));
2707 3658
2708 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);
2709 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 }
2710} 3665}
2711 3666
2712inline_size void 3667inline_size void ecb_cold
2713check_2625 (EV_P) 3668ev_check_2625 (EV_P)
2714{ 3669{
2715 /* kernels < 2.6.25 are borked 3670 /* kernels < 2.6.25 are borked
2716 * 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
2717 */ 3672 */
2718 struct utsname buf; 3673 if (ev_linux_version () < 0x020619)
2719 int major, minor, micro;
2720
2721 if (uname (&buf))
2722 return; 3674 return;
2723 3675
2724 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2725 return;
2726
2727 if (major < 2
2728 || (major == 2 && minor < 6)
2729 || (major == 2 && minor == 6 && micro < 25))
2730 return;
2731
2732 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 ();
2733} 3688}
2734 3689
2735inline_size void 3690inline_size void
2736infy_init (EV_P) 3691infy_init (EV_P)
2737{ 3692{
2738 if (fs_fd != -2) 3693 if (fs_fd != -2)
2739 return; 3694 return;
2740 3695
2741 fs_fd = -1; 3696 fs_fd = -1;
2742 3697
2743 check_2625 (EV_A); 3698 ev_check_2625 (EV_A);
2744 3699
2745 fs_fd = inotify_init (); 3700 fs_fd = infy_newfd ();
2746 3701
2747 if (fs_fd >= 0) 3702 if (fs_fd >= 0)
2748 { 3703 {
3704 fd_intern (fs_fd);
2749 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3705 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2750 ev_set_priority (&fs_w, EV_MAXPRI); 3706 ev_set_priority (&fs_w, EV_MAXPRI);
2751 ev_io_start (EV_A_ &fs_w); 3707 ev_io_start (EV_A_ &fs_w);
3708 ev_unref (EV_A);
2752 } 3709 }
2753} 3710}
2754 3711
2755inline_size void 3712inline_size void
2756infy_fork (EV_P) 3713infy_fork (EV_P)
… …
2758 int slot; 3715 int slot;
2759 3716
2760 if (fs_fd < 0) 3717 if (fs_fd < 0)
2761 return; 3718 return;
2762 3719
3720 ev_ref (EV_A);
3721 ev_io_stop (EV_A_ &fs_w);
2763 close (fs_fd); 3722 close (fs_fd);
2764 fs_fd = inotify_init (); 3723 fs_fd = infy_newfd ();
2765 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
2766 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3733 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2767 { 3734 {
2768 WL w_ = fs_hash [slot].head; 3735 WL w_ = fs_hash [slot].head;
2769 fs_hash [slot].head = 0; 3736 fs_hash [slot].head = 0;
2770 3737
2771 while (w_) 3738 while (w_)
… …
2776 w->wd = -1; 3743 w->wd = -1;
2777 3744
2778 if (fs_fd >= 0) 3745 if (fs_fd >= 0)
2779 infy_add (EV_A_ w); /* re-add, no matter what */ 3746 infy_add (EV_A_ w); /* re-add, no matter what */
2780 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);
2781 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 }
2782 } 3754 }
2783 } 3755 }
2784} 3756}
2785 3757
2786#endif 3758#endif
… …
2803static void noinline 3775static void noinline
2804stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3776stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2805{ 3777{
2806 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2807 3779
2808 /* we copy this here each the time so that */ 3780 ev_statdata prev = w->attr;
2809 /* prev has the old value when the callback gets invoked */
2810 w->prev = w->attr;
2811 ev_stat_stat (EV_A_ w); 3781 ev_stat_stat (EV_A_ w);
2812 3782
2813 /* 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 */
2814 if ( 3784 if (
2815 w->prev.st_dev != w->attr.st_dev 3785 prev.st_dev != w->attr.st_dev
2816 || w->prev.st_ino != w->attr.st_ino 3786 || prev.st_ino != w->attr.st_ino
2817 || w->prev.st_mode != w->attr.st_mode 3787 || prev.st_mode != w->attr.st_mode
2818 || w->prev.st_nlink != w->attr.st_nlink 3788 || prev.st_nlink != w->attr.st_nlink
2819 || w->prev.st_uid != w->attr.st_uid 3789 || prev.st_uid != w->attr.st_uid
2820 || w->prev.st_gid != w->attr.st_gid 3790 || prev.st_gid != w->attr.st_gid
2821 || w->prev.st_rdev != w->attr.st_rdev 3791 || prev.st_rdev != w->attr.st_rdev
2822 || w->prev.st_size != w->attr.st_size 3792 || prev.st_size != w->attr.st_size
2823 || w->prev.st_atime != w->attr.st_atime 3793 || prev.st_atime != w->attr.st_atime
2824 || w->prev.st_mtime != w->attr.st_mtime 3794 || prev.st_mtime != w->attr.st_mtime
2825 || w->prev.st_ctime != w->attr.st_ctime 3795 || prev.st_ctime != w->attr.st_ctime
2826 ) { 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
2827 #if EV_USE_INOTIFY 3802 #if EV_USE_INOTIFY
2828 if (fs_fd >= 0) 3803 if (fs_fd >= 0)
2829 { 3804 {
2830 infy_del (EV_A_ w); 3805 infy_del (EV_A_ w);
2831 infy_add (EV_A_ w); 3806 infy_add (EV_A_ w);
… …
2856 3831
2857 if (fs_fd >= 0) 3832 if (fs_fd >= 0)
2858 infy_add (EV_A_ w); 3833 infy_add (EV_A_ w);
2859 else 3834 else
2860#endif 3835#endif
3836 {
2861 ev_timer_again (EV_A_ &w->timer); 3837 ev_timer_again (EV_A_ &w->timer);
3838 ev_unref (EV_A);
3839 }
2862 3840
2863 ev_start (EV_A_ (W)w, 1); 3841 ev_start (EV_A_ (W)w, 1);
2864 3842
2865 EV_FREQUENT_CHECK; 3843 EV_FREQUENT_CHECK;
2866} 3844}
… …
2875 EV_FREQUENT_CHECK; 3853 EV_FREQUENT_CHECK;
2876 3854
2877#if EV_USE_INOTIFY 3855#if EV_USE_INOTIFY
2878 infy_del (EV_A_ w); 3856 infy_del (EV_A_ w);
2879#endif 3857#endif
3858
3859 if (ev_is_active (&w->timer))
3860 {
3861 ev_ref (EV_A);
2880 ev_timer_stop (EV_A_ &w->timer); 3862 ev_timer_stop (EV_A_ &w->timer);
3863 }
2881 3864
2882 ev_stop (EV_A_ (W)w); 3865 ev_stop (EV_A_ (W)w);
2883 3866
2884 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2885} 3868}
… …
2930 3913
2931 EV_FREQUENT_CHECK; 3914 EV_FREQUENT_CHECK;
2932} 3915}
2933#endif 3916#endif
2934 3917
3918#if EV_PREPARE_ENABLE
2935void 3919void
2936ev_prepare_start (EV_P_ ev_prepare *w) 3920ev_prepare_start (EV_P_ ev_prepare *w)
2937{ 3921{
2938 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
2939 return; 3923 return;
… …
2965 3949
2966 ev_stop (EV_A_ (W)w); 3950 ev_stop (EV_A_ (W)w);
2967 3951
2968 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
2969} 3953}
3954#endif
2970 3955
3956#if EV_CHECK_ENABLE
2971void 3957void
2972ev_check_start (EV_P_ ev_check *w) 3958ev_check_start (EV_P_ ev_check *w)
2973{ 3959{
2974 if (expect_false (ev_is_active (w))) 3960 if (expect_false (ev_is_active (w)))
2975 return; 3961 return;
… …
3001 3987
3002 ev_stop (EV_A_ (W)w); 3988 ev_stop (EV_A_ (W)w);
3003 3989
3004 EV_FREQUENT_CHECK; 3990 EV_FREQUENT_CHECK;
3005} 3991}
3992#endif
3006 3993
3007#if EV_EMBED_ENABLE 3994#if EV_EMBED_ENABLE
3008void noinline 3995void noinline
3009ev_embed_sweep (EV_P_ ev_embed *w) 3996ev_embed_sweep (EV_P_ ev_embed *w)
3010{ 3997{
3011 ev_loop (w->other, EVLOOP_NONBLOCK); 3998 ev_run (w->other, EVRUN_NOWAIT);
3012} 3999}
3013 4000
3014static void 4001static void
3015embed_io_cb (EV_P_ ev_io *io, int revents) 4002embed_io_cb (EV_P_ ev_io *io, int revents)
3016{ 4003{
3017 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4004 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3018 4005
3019 if (ev_cb (w)) 4006 if (ev_cb (w))
3020 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4007 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3021 else 4008 else
3022 ev_loop (w->other, EVLOOP_NONBLOCK); 4009 ev_run (w->other, EVRUN_NOWAIT);
3023} 4010}
3024 4011
3025static void 4012static void
3026embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4013embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3027{ 4014{
3028 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4015 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3029 4016
3030 { 4017 {
3031 struct ev_loop *loop = w->other; 4018 EV_P = w->other;
3032 4019
3033 while (fdchangecnt) 4020 while (fdchangecnt)
3034 { 4021 {
3035 fd_reify (EV_A); 4022 fd_reify (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4023 ev_run (EV_A_ EVRUN_NOWAIT);
3037 } 4024 }
3038 } 4025 }
3039} 4026}
3040 4027
3041static void 4028static void
… …
3044 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));
3045 4032
3046 ev_embed_stop (EV_A_ w); 4033 ev_embed_stop (EV_A_ w);
3047 4034
3048 { 4035 {
3049 struct ev_loop *loop = w->other; 4036 EV_P = w->other;
3050 4037
3051 ev_loop_fork (EV_A); 4038 ev_loop_fork (EV_A);
3052 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4039 ev_run (EV_A_ EVRUN_NOWAIT);
3053 } 4040 }
3054 4041
3055 ev_embed_start (EV_A_ w); 4042 ev_embed_start (EV_A_ w);
3056} 4043}
3057 4044
… …
3068{ 4055{
3069 if (expect_false (ev_is_active (w))) 4056 if (expect_false (ev_is_active (w)))
3070 return; 4057 return;
3071 4058
3072 { 4059 {
3073 struct ev_loop *loop = w->other; 4060 EV_P = w->other;
3074 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 ()));
3075 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);
3076 } 4063 }
3077 4064
3078 EV_FREQUENT_CHECK; 4065 EV_FREQUENT_CHECK;
… …
3105 4092
3106 ev_io_stop (EV_A_ &w->io); 4093 ev_io_stop (EV_A_ &w->io);
3107 ev_prepare_stop (EV_A_ &w->prepare); 4094 ev_prepare_stop (EV_A_ &w->prepare);
3108 ev_fork_stop (EV_A_ &w->fork); 4095 ev_fork_stop (EV_A_ &w->fork);
3109 4096
4097 ev_stop (EV_A_ (W)w);
4098
3110 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
3111} 4100}
3112#endif 4101#endif
3113 4102
3114#if EV_FORK_ENABLE 4103#if EV_FORK_ENABLE
… …
3147 4136
3148 EV_FREQUENT_CHECK; 4137 EV_FREQUENT_CHECK;
3149} 4138}
3150#endif 4139#endif
3151 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
3152#if EV_ASYNC_ENABLE 4182#if EV_ASYNC_ENABLE
3153void 4183void
3154ev_async_start (EV_P_ ev_async *w) 4184ev_async_start (EV_P_ ev_async *w)
3155{ 4185{
3156 if (expect_false (ev_is_active (w))) 4186 if (expect_false (ev_is_active (w)))
3157 return; 4187 return;
3158 4188
4189 w->sent = 0;
4190
3159 evpipe_init (EV_A); 4191 evpipe_init (EV_A);
3160 4192
3161 EV_FREQUENT_CHECK; 4193 EV_FREQUENT_CHECK;
3162 4194
3163 ev_start (EV_A_ (W)w, ++asynccnt); 4195 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3190 4222
3191void 4223void
3192ev_async_send (EV_P_ ev_async *w) 4224ev_async_send (EV_P_ ev_async *w)
3193{ 4225{
3194 w->sent = 1; 4226 w->sent = 1;
3195 evpipe_write (EV_A_ &gotasync); 4227 evpipe_write (EV_A_ &async_pending);
3196} 4228}
3197#endif 4229#endif
3198 4230
3199/*****************************************************************************/ 4231/*****************************************************************************/
3200 4232
… …
3240{ 4272{
3241 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));
3242 4274
3243 if (expect_false (!once)) 4275 if (expect_false (!once))
3244 { 4276 {
3245 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3246 return; 4278 return;
3247 } 4279 }
3248 4280
3249 once->cb = cb; 4281 once->cb = cb;
3250 once->arg = arg; 4282 once->arg = arg;
… …
3265} 4297}
3266 4298
3267/*****************************************************************************/ 4299/*****************************************************************************/
3268 4300
3269#if EV_WALK_ENABLE 4301#if EV_WALK_ENABLE
3270void 4302void ecb_cold
3271ev_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))
3272{ 4304{
3273 int i, j; 4305 int i, j;
3274 ev_watcher_list *wl, *wn; 4306 ev_watcher_list *wl, *wn;
3275 4307
… …
3319 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4351 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3320#endif 4352#endif
3321 4353
3322#if EV_IDLE_ENABLE 4354#if EV_IDLE_ENABLE
3323 if (types & EV_IDLE) 4355 if (types & EV_IDLE)
3324 for (j = NUMPRI; i--; ) 4356 for (j = NUMPRI; j--; )
3325 for (i = idlecnt [j]; i--; ) 4357 for (i = idlecnt [j]; i--; )
3326 cb (EV_A_ EV_IDLE, idles [j][i]); 4358 cb (EV_A_ EV_IDLE, idles [j][i]);
3327#endif 4359#endif
3328 4360
3329#if EV_FORK_ENABLE 4361#if EV_FORK_ENABLE
… …
3337 if (types & EV_ASYNC) 4369 if (types & EV_ASYNC)
3338 for (i = asynccnt; i--; ) 4370 for (i = asynccnt; i--; )
3339 cb (EV_A_ EV_ASYNC, asyncs [i]); 4371 cb (EV_A_ EV_ASYNC, asyncs [i]);
3340#endif 4372#endif
3341 4373
4374#if EV_PREPARE_ENABLE
3342 if (types & EV_PREPARE) 4375 if (types & EV_PREPARE)
3343 for (i = preparecnt; i--; ) 4376 for (i = preparecnt; i--; )
3344#if EV_EMBED_ENABLE 4377# if EV_EMBED_ENABLE
3345 if (ev_cb (prepares [i]) != embed_prepare_cb) 4378 if (ev_cb (prepares [i]) != embed_prepare_cb)
3346#endif 4379# endif
3347 cb (EV_A_ EV_PREPARE, prepares [i]); 4380 cb (EV_A_ EV_PREPARE, prepares [i]);
4381#endif
3348 4382
4383#if EV_CHECK_ENABLE
3349 if (types & EV_CHECK) 4384 if (types & EV_CHECK)
3350 for (i = checkcnt; i--; ) 4385 for (i = checkcnt; i--; )
3351 cb (EV_A_ EV_CHECK, checks [i]); 4386 cb (EV_A_ EV_CHECK, checks [i]);
4387#endif
3352 4388
4389#if EV_SIGNAL_ENABLE
3353 if (types & EV_SIGNAL) 4390 if (types & EV_SIGNAL)
3354 for (i = 0; i < signalmax; ++i) 4391 for (i = 0; i < EV_NSIG - 1; ++i)
3355 for (wl = signals [i].head; wl; ) 4392 for (wl = signals [i].head; wl; )
3356 { 4393 {
3357 wn = wl->next; 4394 wn = wl->next;
3358 cb (EV_A_ EV_SIGNAL, wl); 4395 cb (EV_A_ EV_SIGNAL, wl);
3359 wl = wn; 4396 wl = wn;
3360 } 4397 }
4398#endif
3361 4399
4400#if EV_CHILD_ENABLE
3362 if (types & EV_CHILD) 4401 if (types & EV_CHILD)
3363 for (i = EV_PID_HASHSIZE; i--; ) 4402 for (i = (EV_PID_HASHSIZE); i--; )
3364 for (wl = childs [i]; wl; ) 4403 for (wl = childs [i]; wl; )
3365 { 4404 {
3366 wn = wl->next; 4405 wn = wl->next;
3367 cb (EV_A_ EV_CHILD, wl); 4406 cb (EV_A_ EV_CHILD, wl);
3368 wl = wn; 4407 wl = wn;
3369 } 4408 }
4409#endif
3370/* EV_STAT 0x00001000 /* stat data changed */ 4410/* EV_STAT 0x00001000 /* stat data changed */
3371/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4411/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3372} 4412}
3373#endif 4413#endif
3374 4414
3375#if EV_MULTIPLICITY 4415#if EV_MULTIPLICITY
3376 #include "ev_wrap.h" 4416 #include "ev_wrap.h"
3377#endif 4417#endif
3378 4418
3379#ifdef __cplusplus
3380}
3381#endif
3382

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