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Comparing libev/ev.c (file contents):
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs.
Revision 1.403 by root, Wed Jan 18 12:13:14 2012 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 (©) 2009-2012 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__) || __SUNPRO_C >= 0x5110 || __SUNPRO_xC >= 0x5110
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 #elif defined(__sparc)
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #StoreLoad | #LoadLoad | #StoreStore" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #StoreStore")
565 #endif
566 #endif
567#endif
568
569#ifndef ECB_MEMORY_FENCE
570 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
571 #define ECB_MEMORY_FENCE __sync_synchronize ()
572 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
573 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
574 #elif _MSC_VER >= 1400 /* VC++ 2005 */
575 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
576 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
577 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
578 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
579 #elif defined(_WIN32)
580 #include <WinNT.h>
581 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
582 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
583 #include <mbarrier.h>
584 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
585 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
586 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if !ECB_AVOID_PTHREADS
592 /*
593 * if you get undefined symbol references to pthread_mutex_lock,
594 * or failure to find pthread.h, then you should implement
595 * the ECB_MEMORY_FENCE operations for your cpu/compiler
596 * OR provide pthread.h and link against the posix thread library
597 * of your system.
598 */
599 #include <pthread.h>
600 #define ECB_NEEDS_PTHREADS 1
601 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
602
603 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
604 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
605 #endif
606#endif
607
608#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
609 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
610#endif
611
612#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
613 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
614#endif
615
616/*****************************************************************************/
617
618#define ECB_C99 (__STDC_VERSION__ >= 199901L)
619
620#if __cplusplus
621 #define ecb_inline static inline
622#elif ECB_GCC_VERSION(2,5)
623 #define ecb_inline static __inline__
624#elif ECB_C99
625 #define ecb_inline static inline
626#else
627 #define ecb_inline static
628#endif
629
630#if ECB_GCC_VERSION(3,3)
631 #define ecb_restrict __restrict__
632#elif ECB_C99
633 #define ecb_restrict restrict
634#else
635 #define ecb_restrict
636#endif
637
638typedef int ecb_bool;
639
640#define ECB_CONCAT_(a, b) a ## b
641#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
642#define ECB_STRINGIFY_(a) # a
643#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
644
645#define ecb_function_ ecb_inline
646
647#if ECB_GCC_VERSION(3,1)
648 #define ecb_attribute(attrlist) __attribute__(attrlist)
649 #define ecb_is_constant(expr) __builtin_constant_p (expr)
650 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
651 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
652#else
653 #define ecb_attribute(attrlist)
654 #define ecb_is_constant(expr) 0
655 #define ecb_expect(expr,value) (expr)
656 #define ecb_prefetch(addr,rw,locality)
657#endif
658
659/* no emulation for ecb_decltype */
660#if ECB_GCC_VERSION(4,5)
661 #define ecb_decltype(x) __decltype(x)
662#elif ECB_GCC_VERSION(3,0)
663 #define ecb_decltype(x) __typeof(x)
664#endif
665
666#define ecb_noinline ecb_attribute ((__noinline__))
667#define ecb_noreturn ecb_attribute ((__noreturn__))
668#define ecb_unused ecb_attribute ((__unused__))
669#define ecb_const ecb_attribute ((__const__))
670#define ecb_pure ecb_attribute ((__pure__))
671
672#if ECB_GCC_VERSION(4,3)
673 #define ecb_artificial ecb_attribute ((__artificial__))
674 #define ecb_hot ecb_attribute ((__hot__))
675 #define ecb_cold ecb_attribute ((__cold__))
676#else
677 #define ecb_artificial
678 #define ecb_hot
679 #define ecb_cold
680#endif
681
682/* put around conditional expressions if you are very sure that the */
683/* expression is mostly true or mostly false. note that these return */
684/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 685#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 686#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
687/* for compatibility to the rest of the world */
688#define ecb_likely(expr) ecb_expect_true (expr)
689#define ecb_unlikely(expr) ecb_expect_false (expr)
690
691/* count trailing zero bits and count # of one bits */
692#if ECB_GCC_VERSION(3,4)
693 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
694 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
695 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
696 #define ecb_ctz32(x) __builtin_ctz (x)
697 #define ecb_ctz64(x) __builtin_ctzll (x)
698 #define ecb_popcount32(x) __builtin_popcount (x)
699 /* no popcountll */
700#else
701 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
702 ecb_function_ int
703 ecb_ctz32 (uint32_t x)
704 {
705 int r = 0;
706
707 x &= ~x + 1; /* this isolates the lowest bit */
708
709#if ECB_branchless_on_i386
710 r += !!(x & 0xaaaaaaaa) << 0;
711 r += !!(x & 0xcccccccc) << 1;
712 r += !!(x & 0xf0f0f0f0) << 2;
713 r += !!(x & 0xff00ff00) << 3;
714 r += !!(x & 0xffff0000) << 4;
715#else
716 if (x & 0xaaaaaaaa) r += 1;
717 if (x & 0xcccccccc) r += 2;
718 if (x & 0xf0f0f0f0) r += 4;
719 if (x & 0xff00ff00) r += 8;
720 if (x & 0xffff0000) r += 16;
721#endif
722
723 return r;
724 }
725
726 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
727 ecb_function_ int
728 ecb_ctz64 (uint64_t x)
729 {
730 int shift = x & 0xffffffffU ? 0 : 32;
731 return ecb_ctz32 (x >> shift) + shift;
732 }
733
734 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
735 ecb_function_ int
736 ecb_popcount32 (uint32_t x)
737 {
738 x -= (x >> 1) & 0x55555555;
739 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
740 x = ((x >> 4) + x) & 0x0f0f0f0f;
741 x *= 0x01010101;
742
743 return x >> 24;
744 }
745
746 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
747 ecb_function_ int ecb_ld32 (uint32_t x)
748 {
749 int r = 0;
750
751 if (x >> 16) { x >>= 16; r += 16; }
752 if (x >> 8) { x >>= 8; r += 8; }
753 if (x >> 4) { x >>= 4; r += 4; }
754 if (x >> 2) { x >>= 2; r += 2; }
755 if (x >> 1) { r += 1; }
756
757 return r;
758 }
759
760 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
761 ecb_function_ int ecb_ld64 (uint64_t x)
762 {
763 int r = 0;
764
765 if (x >> 32) { x >>= 32; r += 32; }
766
767 return r + ecb_ld32 (x);
768 }
769#endif
770
771ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
772ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
773{
774 return ( (x * 0x0802U & 0x22110U)
775 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
776}
777
778ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
779ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
780{
781 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
782 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
783 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
784 x = ( x >> 8 ) | ( x << 8);
785
786 return x;
787}
788
789ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
790ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
791{
792 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
793 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
794 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
795 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
796 x = ( x >> 16 ) | ( x << 16);
797
798 return x;
799}
800
801/* popcount64 is only available on 64 bit cpus as gcc builtin */
802/* so for this version we are lazy */
803ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
804ecb_function_ int
805ecb_popcount64 (uint64_t x)
806{
807 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
808}
809
810ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
811ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
812ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
813ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
814ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
815ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
816ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
817ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
818
819ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
820ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
821ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
822ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
823ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
824ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
825ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
826ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
827
828#if ECB_GCC_VERSION(4,3)
829 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
830 #define ecb_bswap32(x) __builtin_bswap32 (x)
831 #define ecb_bswap64(x) __builtin_bswap64 (x)
832#else
833 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
834 ecb_function_ uint16_t
835 ecb_bswap16 (uint16_t x)
836 {
837 return ecb_rotl16 (x, 8);
838 }
839
840 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
841 ecb_function_ uint32_t
842 ecb_bswap32 (uint32_t x)
843 {
844 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
845 }
846
847 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
848 ecb_function_ uint64_t
849 ecb_bswap64 (uint64_t x)
850 {
851 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
852 }
853#endif
854
855#if ECB_GCC_VERSION(4,5)
856 #define ecb_unreachable() __builtin_unreachable ()
857#else
858 /* this seems to work fine, but gcc always emits a warning for it :/ */
859 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
860 ecb_function_ void ecb_unreachable (void) { }
861#endif
862
863/* try to tell the compiler that some condition is definitely true */
864#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
865
866ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
867ecb_function_ unsigned char
868ecb_byteorder_helper (void)
869{
870 const uint32_t u = 0x11223344;
871 return *(unsigned char *)&u;
872}
873
874ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
875ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
876ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
877ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
878
879#if ECB_GCC_VERSION(3,0) || ECB_C99
880 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
881#else
882 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
883#endif
884
885#if __cplusplus
886 template<typename T>
887 static inline T ecb_div_rd (T val, T div)
888 {
889 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
890 }
891 template<typename T>
892 static inline T ecb_div_ru (T val, T div)
893 {
894 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
895 }
896#else
897 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
898 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
899#endif
900
901#if ecb_cplusplus_does_not_suck
902 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
903 template<typename T, int N>
904 static inline int ecb_array_length (const T (&arr)[N])
905 {
906 return N;
907 }
908#else
909 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
910#endif
911
912#endif
913
914/* ECB.H END */
915
916#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
917/* if your architecture doesn't need memory fences, e.g. because it is
918 * single-cpu/core, or if you use libev in a project that doesn't use libev
919 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
920 * libev, in which cases the memory fences become nops.
921 * alternatively, you can remove this #error and link against libpthread,
922 * which will then provide the memory fences.
923 */
924# error "memory fences not defined for your architecture, please report"
925#endif
926
927#ifndef ECB_MEMORY_FENCE
928# define ECB_MEMORY_FENCE do { } while (0)
929# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
930# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
931#endif
932
933#define expect_false(cond) ecb_expect_false (cond)
934#define expect_true(cond) ecb_expect_true (cond)
935#define noinline ecb_noinline
936
388#define inline_size static inline 937#define inline_size ecb_inline
389 938
390#if EV_MINIMAL 939#if EV_FEATURE_CODE
940# define inline_speed ecb_inline
941#else
391# define inline_speed static noinline 942# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 943#endif
395 944
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 945#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 946
398#if EV_MINPRI == EV_MAXPRI 947#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 960#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 961#define ev_at(w) ((WT)(w))->at
413 962
414#if EV_USE_REALTIME 963#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 964/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 965/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 966static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 967#endif
419 968
420#if EV_USE_MONOTONIC 969#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 970static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 971#endif
423 972
973#ifndef EV_FD_TO_WIN32_HANDLE
974# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
975#endif
976#ifndef EV_WIN32_HANDLE_TO_FD
977# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
978#endif
979#ifndef EV_WIN32_CLOSE_FD
980# define EV_WIN32_CLOSE_FD(fd) close (fd)
981#endif
982
424#ifdef _WIN32 983#ifdef _WIN32
425# include "ev_win32.c" 984# include "ev_win32.c"
426#endif 985#endif
427 986
428/*****************************************************************************/ 987/*****************************************************************************/
429 988
989/* define a suitable floor function (only used by periodics atm) */
990
991#if EV_USE_FLOOR
992# include <math.h>
993# define ev_floor(v) floor (v)
994#else
995
996#include <float.h>
997
998/* a floor() replacement function, should be independent of ev_tstamp type */
999static ev_tstamp noinline
1000ev_floor (ev_tstamp v)
1001{
1002 /* the choice of shift factor is not terribly important */
1003#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1004 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1005#else
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1007#endif
1008
1009 /* argument too large for an unsigned long? */
1010 if (expect_false (v >= shift))
1011 {
1012 ev_tstamp f;
1013
1014 if (v == v - 1.)
1015 return v; /* very large number */
1016
1017 f = shift * ev_floor (v * (1. / shift));
1018 return f + ev_floor (v - f);
1019 }
1020
1021 /* special treatment for negative args? */
1022 if (expect_false (v < 0.))
1023 {
1024 ev_tstamp f = -ev_floor (-v);
1025
1026 return f - (f == v ? 0 : 1);
1027 }
1028
1029 /* fits into an unsigned long */
1030 return (unsigned long)v;
1031}
1032
1033#endif
1034
1035/*****************************************************************************/
1036
1037#ifdef __linux
1038# include <sys/utsname.h>
1039#endif
1040
1041static unsigned int noinline ecb_cold
1042ev_linux_version (void)
1043{
1044#ifdef __linux
1045 unsigned int v = 0;
1046 struct utsname buf;
1047 int i;
1048 char *p = buf.release;
1049
1050 if (uname (&buf))
1051 return 0;
1052
1053 for (i = 3+1; --i; )
1054 {
1055 unsigned int c = 0;
1056
1057 for (;;)
1058 {
1059 if (*p >= '0' && *p <= '9')
1060 c = c * 10 + *p++ - '0';
1061 else
1062 {
1063 p += *p == '.';
1064 break;
1065 }
1066 }
1067
1068 v = (v << 8) | c;
1069 }
1070
1071 return v;
1072#else
1073 return 0;
1074#endif
1075}
1076
1077/*****************************************************************************/
1078
1079#if EV_AVOID_STDIO
1080static void noinline ecb_cold
1081ev_printerr (const char *msg)
1082{
1083 write (STDERR_FILENO, msg, strlen (msg));
1084}
1085#endif
1086
430static void (*syserr_cb)(const char *msg); 1087static void (*syserr_cb)(const char *msg);
431 1088
432void 1089void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1090ev_set_syserr_cb (void (*cb)(const char *msg))
434{ 1091{
435 syserr_cb = cb; 1092 syserr_cb = cb;
436} 1093}
437 1094
438static void noinline 1095static void noinline ecb_cold
439ev_syserr (const char *msg) 1096ev_syserr (const char *msg)
440{ 1097{
441 if (!msg) 1098 if (!msg)
442 msg = "(libev) system error"; 1099 msg = "(libev) system error";
443 1100
444 if (syserr_cb) 1101 if (syserr_cb)
445 syserr_cb (msg); 1102 syserr_cb (msg);
446 else 1103 else
447 { 1104 {
1105#if EV_AVOID_STDIO
1106 ev_printerr (msg);
1107 ev_printerr (": ");
1108 ev_printerr (strerror (errno));
1109 ev_printerr ("\n");
1110#else
448 perror (msg); 1111 perror (msg);
1112#endif
449 abort (); 1113 abort ();
450 } 1114 }
451} 1115}
452 1116
453static void * 1117static void *
454ev_realloc_emul (void *ptr, long size) 1118ev_realloc_emul (void *ptr, long size)
455{ 1119{
1120#if __GLIBC__
1121 return realloc (ptr, size);
1122#else
456 /* some systems, notably openbsd and darwin, fail to properly 1123 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1124 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1125 * the single unix specification, so work around them here.
459 */ 1126 */
460 1127
461 if (size) 1128 if (size)
462 return realloc (ptr, size); 1129 return realloc (ptr, size);
463 1130
464 free (ptr); 1131 free (ptr);
465 return 0; 1132 return 0;
1133#endif
466} 1134}
467 1135
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1136static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
469 1137
470void 1138void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1139ev_set_allocator (void *(*cb)(void *ptr, long size))
472{ 1140{
473 alloc = cb; 1141 alloc = cb;
474} 1142}
475 1143
… …
478{ 1146{
479 ptr = alloc (ptr, size); 1147 ptr = alloc (ptr, size);
480 1148
481 if (!ptr && size) 1149 if (!ptr && size)
482 { 1150 {
1151#if EV_AVOID_STDIO
1152 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1153#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1154 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1155#endif
484 abort (); 1156 abort ();
485 } 1157 }
486 1158
487 return ptr; 1159 return ptr;
488} 1160}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 1162#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 1163#define ev_free(ptr) ev_realloc ((ptr), 0)
492 1164
493/*****************************************************************************/ 1165/*****************************************************************************/
494 1166
1167/* set in reify when reification needed */
1168#define EV_ANFD_REIFY 1
1169
495/* file descriptor info structure */ 1170/* file descriptor info structure */
496typedef struct 1171typedef struct
497{ 1172{
498 WL head; 1173 WL head;
499 unsigned char events; /* the events watched for */ 1174 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 1175 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1176 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502 unsigned char unused; 1177 unsigned char unused;
503#if EV_USE_EPOLL 1178#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 1179 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 1180#endif
506#if EV_SELECT_IS_WINSOCKET 1181#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 1182 SOCKET handle;
1183#endif
1184#if EV_USE_IOCP
1185 OVERLAPPED or, ow;
508#endif 1186#endif
509} ANFD; 1187} ANFD;
510 1188
511/* stores the pending event set for a given watcher */ 1189/* stores the pending event set for a given watcher */
512typedef struct 1190typedef struct
… …
554 #undef VAR 1232 #undef VAR
555 }; 1233 };
556 #include "ev_wrap.h" 1234 #include "ev_wrap.h"
557 1235
558 static struct ev_loop default_loop_struct; 1236 static struct ev_loop default_loop_struct;
559 struct ev_loop *ev_default_loop_ptr; 1237 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
560 1238
561#else 1239#else
562 1240
563 ev_tstamp ev_rt_now; 1241 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
564 #define VAR(name,decl) static decl; 1242 #define VAR(name,decl) static decl;
565 #include "ev_vars.h" 1243 #include "ev_vars.h"
566 #undef VAR 1244 #undef VAR
567 1245
568 static int ev_default_loop_ptr; 1246 static int ev_default_loop_ptr;
569 1247
570#endif 1248#endif
571 1249
572#if EV_MINIMAL < 2 1250#if EV_FEATURE_API
573# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
574# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A) 1251# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1252# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
575# define EV_INVOKE_PENDING invoke_cb (EV_A) 1253# define EV_INVOKE_PENDING invoke_cb (EV_A)
576#else 1254#else
577# define EV_SUSPEND_CB (void)0
578# define EV_RESUME_CB (void)0 1255# define EV_RELEASE_CB (void)0
1256# define EV_ACQUIRE_CB (void)0
579# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1257# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580#endif 1258#endif
1259
1260#define EVBREAK_RECURSE 0x80
581 1261
582/*****************************************************************************/ 1262/*****************************************************************************/
583 1263
584#ifndef EV_HAVE_EV_TIME 1264#ifndef EV_HAVE_EV_TIME
585ev_tstamp 1265ev_tstamp
… …
629 if (delay > 0.) 1309 if (delay > 0.)
630 { 1310 {
631#if EV_USE_NANOSLEEP 1311#if EV_USE_NANOSLEEP
632 struct timespec ts; 1312 struct timespec ts;
633 1313
634 ts.tv_sec = (time_t)delay; 1314 EV_TS_SET (ts, delay);
635 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
636
637 nanosleep (&ts, 0); 1315 nanosleep (&ts, 0);
638#elif defined(_WIN32) 1316#elif defined(_WIN32)
639 Sleep ((unsigned long)(delay * 1e3)); 1317 Sleep ((unsigned long)(delay * 1e3));
640#else 1318#else
641 struct timeval tv; 1319 struct timeval tv;
642 1320
643 tv.tv_sec = (time_t)delay;
644 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
645
646 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1321 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1322 /* something not guaranteed by newer posix versions, but guaranteed */
648 /* by older ones */ 1323 /* by older ones */
1324 EV_TV_SET (tv, delay);
649 select (0, 0, 0, 0, &tv); 1325 select (0, 0, 0, 0, &tv);
650#endif 1326#endif
651 } 1327 }
652} 1328}
653 1329
654/*****************************************************************************/ 1330/*****************************************************************************/
655 1331
656#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1332#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
657 1333
658/* find a suitable new size for the given array, */ 1334/* find a suitable new size for the given array, */
659/* hopefully by rounding to a ncie-to-malloc size */ 1335/* hopefully by rounding to a nice-to-malloc size */
660inline_size int 1336inline_size int
661array_nextsize (int elem, int cur, int cnt) 1337array_nextsize (int elem, int cur, int cnt)
662{ 1338{
663 int ncur = cur + 1; 1339 int ncur = cur + 1;
664 1340
665 do 1341 do
666 ncur <<= 1; 1342 ncur <<= 1;
667 while (cnt > ncur); 1343 while (cnt > ncur);
668 1344
669 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1345 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
670 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1346 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
671 { 1347 {
672 ncur *= elem; 1348 ncur *= elem;
673 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1349 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
674 ncur = ncur - sizeof (void *) * 4; 1350 ncur = ncur - sizeof (void *) * 4;
… …
676 } 1352 }
677 1353
678 return ncur; 1354 return ncur;
679} 1355}
680 1356
681static noinline void * 1357static void * noinline ecb_cold
682array_realloc (int elem, void *base, int *cur, int cnt) 1358array_realloc (int elem, void *base, int *cur, int cnt)
683{ 1359{
684 *cur = array_nextsize (elem, *cur, cnt); 1360 *cur = array_nextsize (elem, *cur, cnt);
685 return ev_realloc (base, elem * *cur); 1361 return ev_realloc (base, elem * *cur);
686} 1362}
… …
689 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1365 memset ((void *)(base), 0, sizeof (*(base)) * (count))
690 1366
691#define array_needsize(type,base,cur,cnt,init) \ 1367#define array_needsize(type,base,cur,cnt,init) \
692 if (expect_false ((cnt) > (cur))) \ 1368 if (expect_false ((cnt) > (cur))) \
693 { \ 1369 { \
694 int ocur_ = (cur); \ 1370 int ecb_unused ocur_ = (cur); \
695 (base) = (type *)array_realloc \ 1371 (base) = (type *)array_realloc \
696 (sizeof (type), (base), &(cur), (cnt)); \ 1372 (sizeof (type), (base), &(cur), (cnt)); \
697 init ((base) + (ocur_), (cur) - ocur_); \ 1373 init ((base) + (ocur_), (cur) - ocur_); \
698 } 1374 }
699 1375
… …
760} 1436}
761 1437
762/*****************************************************************************/ 1438/*****************************************************************************/
763 1439
764inline_speed void 1440inline_speed void
765fd_event (EV_P_ int fd, int revents) 1441fd_event_nocheck (EV_P_ int fd, int revents)
766{ 1442{
767 ANFD *anfd = anfds + fd; 1443 ANFD *anfd = anfds + fd;
768 ev_io *w; 1444 ev_io *w;
769 1445
770 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1446 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
774 if (ev) 1450 if (ev)
775 ev_feed_event (EV_A_ (W)w, ev); 1451 ev_feed_event (EV_A_ (W)w, ev);
776 } 1452 }
777} 1453}
778 1454
1455/* do not submit kernel events for fds that have reify set */
1456/* because that means they changed while we were polling for new events */
1457inline_speed void
1458fd_event (EV_P_ int fd, int revents)
1459{
1460 ANFD *anfd = anfds + fd;
1461
1462 if (expect_true (!anfd->reify))
1463 fd_event_nocheck (EV_A_ fd, revents);
1464}
1465
779void 1466void
780ev_feed_fd_event (EV_P_ int fd, int revents) 1467ev_feed_fd_event (EV_P_ int fd, int revents)
781{ 1468{
782 if (fd >= 0 && fd < anfdmax) 1469 if (fd >= 0 && fd < anfdmax)
783 fd_event (EV_A_ fd, revents); 1470 fd_event_nocheck (EV_A_ fd, revents);
784} 1471}
785 1472
786/* make sure the external fd watch events are in-sync */ 1473/* make sure the external fd watch events are in-sync */
787/* with the kernel/libev internal state */ 1474/* with the kernel/libev internal state */
788inline_size void 1475inline_size void
789fd_reify (EV_P) 1476fd_reify (EV_P)
790{ 1477{
791 int i; 1478 int i;
792 1479
1480#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1481 for (i = 0; i < fdchangecnt; ++i)
1482 {
1483 int fd = fdchanges [i];
1484 ANFD *anfd = anfds + fd;
1485
1486 if (anfd->reify & EV__IOFDSET && anfd->head)
1487 {
1488 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1489
1490 if (handle != anfd->handle)
1491 {
1492 unsigned long arg;
1493
1494 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1495
1496 /* handle changed, but fd didn't - we need to do it in two steps */
1497 backend_modify (EV_A_ fd, anfd->events, 0);
1498 anfd->events = 0;
1499 anfd->handle = handle;
1500 }
1501 }
1502 }
1503#endif
1504
793 for (i = 0; i < fdchangecnt; ++i) 1505 for (i = 0; i < fdchangecnt; ++i)
794 { 1506 {
795 int fd = fdchanges [i]; 1507 int fd = fdchanges [i];
796 ANFD *anfd = anfds + fd; 1508 ANFD *anfd = anfds + fd;
797 ev_io *w; 1509 ev_io *w;
798 1510
799 unsigned char events = 0; 1511 unsigned char o_events = anfd->events;
1512 unsigned char o_reify = anfd->reify;
800 1513
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1514 anfd->reify = 0;
802 events |= (unsigned char)w->events;
803 1515
804#if EV_SELECT_IS_WINSOCKET 1516 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
805 if (events)
806 { 1517 {
807 unsigned long arg; 1518 anfd->events = 0;
808 #ifdef EV_FD_TO_WIN32_HANDLE 1519
809 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1520 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
810 #else 1521 anfd->events |= (unsigned char)w->events;
811 anfd->handle = _get_osfhandle (fd); 1522
812 #endif 1523 if (o_events != anfd->events)
813 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1524 o_reify = EV__IOFDSET; /* actually |= */
814 } 1525 }
815#endif
816 1526
817 { 1527 if (o_reify & EV__IOFDSET)
818 unsigned char o_events = anfd->events;
819 unsigned char o_reify = anfd->reify;
820
821 anfd->reify = 0;
822 anfd->events = events;
823
824 if (o_events != events || o_reify & EV__IOFDSET)
825 backend_modify (EV_A_ fd, o_events, events); 1528 backend_modify (EV_A_ fd, o_events, anfd->events);
826 }
827 } 1529 }
828 1530
829 fdchangecnt = 0; 1531 fdchangecnt = 0;
830} 1532}
831 1533
… …
843 fdchanges [fdchangecnt - 1] = fd; 1545 fdchanges [fdchangecnt - 1] = fd;
844 } 1546 }
845} 1547}
846 1548
847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1549/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
848inline_speed void 1550inline_speed void ecb_cold
849fd_kill (EV_P_ int fd) 1551fd_kill (EV_P_ int fd)
850{ 1552{
851 ev_io *w; 1553 ev_io *w;
852 1554
853 while ((w = (ev_io *)anfds [fd].head)) 1555 while ((w = (ev_io *)anfds [fd].head))
… …
855 ev_io_stop (EV_A_ w); 1557 ev_io_stop (EV_A_ w);
856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1558 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
857 } 1559 }
858} 1560}
859 1561
860/* check whether the given fd is atcually valid, for error recovery */ 1562/* check whether the given fd is actually valid, for error recovery */
861inline_size int 1563inline_size int ecb_cold
862fd_valid (int fd) 1564fd_valid (int fd)
863{ 1565{
864#ifdef _WIN32 1566#ifdef _WIN32
865 return _get_osfhandle (fd) != -1; 1567 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
866#else 1568#else
867 return fcntl (fd, F_GETFD) != -1; 1569 return fcntl (fd, F_GETFD) != -1;
868#endif 1570#endif
869} 1571}
870 1572
871/* called on EBADF to verify fds */ 1573/* called on EBADF to verify fds */
872static void noinline 1574static void noinline ecb_cold
873fd_ebadf (EV_P) 1575fd_ebadf (EV_P)
874{ 1576{
875 int fd; 1577 int fd;
876 1578
877 for (fd = 0; fd < anfdmax; ++fd) 1579 for (fd = 0; fd < anfdmax; ++fd)
… …
879 if (!fd_valid (fd) && errno == EBADF) 1581 if (!fd_valid (fd) && errno == EBADF)
880 fd_kill (EV_A_ fd); 1582 fd_kill (EV_A_ fd);
881} 1583}
882 1584
883/* called on ENOMEM in select/poll to kill some fds and retry */ 1585/* called on ENOMEM in select/poll to kill some fds and retry */
884static void noinline 1586static void noinline ecb_cold
885fd_enomem (EV_P) 1587fd_enomem (EV_P)
886{ 1588{
887 int fd; 1589 int fd;
888 1590
889 for (fd = anfdmax; fd--; ) 1591 for (fd = anfdmax; fd--; )
890 if (anfds [fd].events) 1592 if (anfds [fd].events)
891 { 1593 {
892 fd_kill (EV_A_ fd); 1594 fd_kill (EV_A_ fd);
893 return; 1595 break;
894 } 1596 }
895} 1597}
896 1598
897/* usually called after fork if backend needs to re-arm all fds from scratch */ 1599/* usually called after fork if backend needs to re-arm all fds from scratch */
898static void noinline 1600static void noinline
… …
903 for (fd = 0; fd < anfdmax; ++fd) 1605 for (fd = 0; fd < anfdmax; ++fd)
904 if (anfds [fd].events) 1606 if (anfds [fd].events)
905 { 1607 {
906 anfds [fd].events = 0; 1608 anfds [fd].events = 0;
907 anfds [fd].emask = 0; 1609 anfds [fd].emask = 0;
908 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1610 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
909 } 1611 }
910} 1612}
911 1613
1614/* used to prepare libev internal fd's */
1615/* this is not fork-safe */
1616inline_speed void
1617fd_intern (int fd)
1618{
1619#ifdef _WIN32
1620 unsigned long arg = 1;
1621 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1622#else
1623 fcntl (fd, F_SETFD, FD_CLOEXEC);
1624 fcntl (fd, F_SETFL, O_NONBLOCK);
1625#endif
1626}
1627
912/*****************************************************************************/ 1628/*****************************************************************************/
913 1629
914/* 1630/*
915 * the heap functions want a real array index. array index 0 uis guaranteed to not 1631 * the heap functions want a real array index. array index 0 is guaranteed to not
916 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1632 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
917 * the branching factor of the d-tree. 1633 * the branching factor of the d-tree.
918 */ 1634 */
919 1635
920/* 1636/*
… …
988 1704
989 for (;;) 1705 for (;;)
990 { 1706 {
991 int c = k << 1; 1707 int c = k << 1;
992 1708
993 if (c > N + HEAP0 - 1) 1709 if (c >= N + HEAP0)
994 break; 1710 break;
995 1711
996 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1712 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997 ? 1 : 0; 1713 ? 1 : 0;
998 1714
… …
1034 1750
1035/* move an element suitably so it is in a correct place */ 1751/* move an element suitably so it is in a correct place */
1036inline_size void 1752inline_size void
1037adjustheap (ANHE *heap, int N, int k) 1753adjustheap (ANHE *heap, int N, int k)
1038{ 1754{
1039 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1755 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1040 upheap (heap, k); 1756 upheap (heap, k);
1041 else 1757 else
1042 downheap (heap, N, k); 1758 downheap (heap, N, k);
1043} 1759}
1044 1760
… …
1057/*****************************************************************************/ 1773/*****************************************************************************/
1058 1774
1059/* associate signal watchers to a signal signal */ 1775/* associate signal watchers to a signal signal */
1060typedef struct 1776typedef struct
1061{ 1777{
1778 EV_ATOMIC_T pending;
1779#if EV_MULTIPLICITY
1780 EV_P;
1781#endif
1062 WL head; 1782 WL head;
1063 EV_ATOMIC_T gotsig;
1064} ANSIG; 1783} ANSIG;
1065 1784
1066static ANSIG *signals; 1785static ANSIG signals [EV_NSIG - 1];
1067static int signalmax;
1068
1069static EV_ATOMIC_T gotsig;
1070 1786
1071/*****************************************************************************/ 1787/*****************************************************************************/
1072 1788
1073/* used to prepare libev internal fd's */ 1789#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1074/* this is not fork-safe */
1075inline_speed void
1076fd_intern (int fd)
1077{
1078#ifdef _WIN32
1079 unsigned long arg = 1;
1080 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1081#else
1082 fcntl (fd, F_SETFD, FD_CLOEXEC);
1083 fcntl (fd, F_SETFL, O_NONBLOCK);
1084#endif
1085}
1086 1790
1087static void noinline 1791static void noinline ecb_cold
1088evpipe_init (EV_P) 1792evpipe_init (EV_P)
1089{ 1793{
1090 if (!ev_is_active (&pipe_w)) 1794 if (!ev_is_active (&pipe_w))
1091 { 1795 {
1092#if EV_USE_EVENTFD 1796# if EV_USE_EVENTFD
1797 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1798 if (evfd < 0 && errno == EINVAL)
1093 if ((evfd = eventfd (0, 0)) >= 0) 1799 evfd = eventfd (0, 0);
1800
1801 if (evfd >= 0)
1094 { 1802 {
1095 evpipe [0] = -1; 1803 evpipe [0] = -1;
1096 fd_intern (evfd); 1804 fd_intern (evfd); /* doing it twice doesn't hurt */
1097 ev_io_set (&pipe_w, evfd, EV_READ); 1805 ev_io_set (&pipe_w, evfd, EV_READ);
1098 } 1806 }
1099 else 1807 else
1100#endif 1808# endif
1101 { 1809 {
1102 while (pipe (evpipe)) 1810 while (pipe (evpipe))
1103 ev_syserr ("(libev) error creating signal/async pipe"); 1811 ev_syserr ("(libev) error creating signal/async pipe");
1104 1812
1105 fd_intern (evpipe [0]); 1813 fd_intern (evpipe [0]);
… …
1110 ev_io_start (EV_A_ &pipe_w); 1818 ev_io_start (EV_A_ &pipe_w);
1111 ev_unref (EV_A); /* watcher should not keep loop alive */ 1819 ev_unref (EV_A); /* watcher should not keep loop alive */
1112 } 1820 }
1113} 1821}
1114 1822
1115inline_size void 1823inline_speed void
1116evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1824evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1117{ 1825{
1118 if (!*flag) 1826 if (expect_true (*flag))
1827 return;
1828
1829 *flag = 1;
1830
1831 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1832
1833 pipe_write_skipped = 1;
1834
1835 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1836
1837 if (pipe_write_wanted)
1119 { 1838 {
1839 int old_errno;
1840
1841 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1842
1120 int old_errno = errno; /* save errno because write might clobber it */ 1843 old_errno = errno; /* save errno because write will clobber it */
1121
1122 *flag = 1;
1123 1844
1124#if EV_USE_EVENTFD 1845#if EV_USE_EVENTFD
1125 if (evfd >= 0) 1846 if (evfd >= 0)
1126 { 1847 {
1127 uint64_t counter = 1; 1848 uint64_t counter = 1;
1128 write (evfd, &counter, sizeof (uint64_t)); 1849 write (evfd, &counter, sizeof (uint64_t));
1129 } 1850 }
1130 else 1851 else
1131#endif 1852#endif
1853 {
1854 /* win32 people keep sending patches that change this write() to send() */
1855 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1856 /* so when you think this write should be a send instead, please find out */
1857 /* where your send() is from - it's definitely not the microsoft send, and */
1858 /* tell me. thank you. */
1132 write (evpipe [1], &old_errno, 1); 1859 write (evpipe [1], &(evpipe [1]), 1);
1860 }
1133 1861
1134 errno = old_errno; 1862 errno = old_errno;
1135 } 1863 }
1136} 1864}
1137 1865
1138/* called whenever the libev signal pipe */ 1866/* called whenever the libev signal pipe */
1139/* got some events (signal, async) */ 1867/* got some events (signal, async) */
1140static void 1868static void
1141pipecb (EV_P_ ev_io *iow, int revents) 1869pipecb (EV_P_ ev_io *iow, int revents)
1142{ 1870{
1871 int i;
1872
1873 if (revents & EV_READ)
1874 {
1143#if EV_USE_EVENTFD 1875#if EV_USE_EVENTFD
1144 if (evfd >= 0) 1876 if (evfd >= 0)
1145 { 1877 {
1146 uint64_t counter; 1878 uint64_t counter;
1147 read (evfd, &counter, sizeof (uint64_t)); 1879 read (evfd, &counter, sizeof (uint64_t));
1148 } 1880 }
1149 else 1881 else
1150#endif 1882#endif
1151 { 1883 {
1152 char dummy; 1884 char dummy;
1885 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1153 read (evpipe [0], &dummy, 1); 1886 read (evpipe [0], &dummy, 1);
1887 }
1888 }
1889
1890 pipe_write_skipped = 0;
1891
1892#if EV_SIGNAL_ENABLE
1893 if (sig_pending)
1154 } 1894 {
1895 sig_pending = 0;
1155 1896
1156 if (gotsig && ev_is_default_loop (EV_A)) 1897 for (i = EV_NSIG - 1; i--; )
1157 { 1898 if (expect_false (signals [i].pending))
1158 int signum;
1159 gotsig = 0;
1160
1161 for (signum = signalmax; signum--; )
1162 if (signals [signum].gotsig)
1163 ev_feed_signal_event (EV_A_ signum + 1); 1899 ev_feed_signal_event (EV_A_ i + 1);
1164 } 1900 }
1901#endif
1165 1902
1166#if EV_ASYNC_ENABLE 1903#if EV_ASYNC_ENABLE
1167 if (gotasync) 1904 if (async_pending)
1168 { 1905 {
1169 int i; 1906 async_pending = 0;
1170 gotasync = 0;
1171 1907
1172 for (i = asynccnt; i--; ) 1908 for (i = asynccnt; i--; )
1173 if (asyncs [i]->sent) 1909 if (asyncs [i]->sent)
1174 { 1910 {
1175 asyncs [i]->sent = 0; 1911 asyncs [i]->sent = 0;
… …
1179#endif 1915#endif
1180} 1916}
1181 1917
1182/*****************************************************************************/ 1918/*****************************************************************************/
1183 1919
1920void
1921ev_feed_signal (int signum)
1922{
1923#if EV_MULTIPLICITY
1924 EV_P = signals [signum - 1].loop;
1925
1926 if (!EV_A)
1927 return;
1928#endif
1929
1930 if (!ev_active (&pipe_w))
1931 return;
1932
1933 signals [signum - 1].pending = 1;
1934 evpipe_write (EV_A_ &sig_pending);
1935}
1936
1184static void 1937static void
1185ev_sighandler (int signum) 1938ev_sighandler (int signum)
1186{ 1939{
1187#if EV_MULTIPLICITY
1188 struct ev_loop *loop = &default_loop_struct;
1189#endif
1190
1191#if _WIN32 1940#ifdef _WIN32
1192 signal (signum, ev_sighandler); 1941 signal (signum, ev_sighandler);
1193#endif 1942#endif
1194 1943
1195 signals [signum - 1].gotsig = 1; 1944 ev_feed_signal (signum);
1196 evpipe_write (EV_A_ &gotsig);
1197} 1945}
1198 1946
1199void noinline 1947void noinline
1200ev_feed_signal_event (EV_P_ int signum) 1948ev_feed_signal_event (EV_P_ int signum)
1201{ 1949{
1202 WL w; 1950 WL w;
1203 1951
1952 if (expect_false (signum <= 0 || signum > EV_NSIG))
1953 return;
1954
1955 --signum;
1956
1204#if EV_MULTIPLICITY 1957#if EV_MULTIPLICITY
1205 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1958 /* it is permissible to try to feed a signal to the wrong loop */
1206#endif 1959 /* or, likely more useful, feeding a signal nobody is waiting for */
1207 1960
1208 --signum; 1961 if (expect_false (signals [signum].loop != EV_A))
1209
1210 if (signum < 0 || signum >= signalmax)
1211 return; 1962 return;
1963#endif
1212 1964
1213 signals [signum].gotsig = 0; 1965 signals [signum].pending = 0;
1214 1966
1215 for (w = signals [signum].head; w; w = w->next) 1967 for (w = signals [signum].head; w; w = w->next)
1216 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1968 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217} 1969}
1218 1970
1971#if EV_USE_SIGNALFD
1972static void
1973sigfdcb (EV_P_ ev_io *iow, int revents)
1974{
1975 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1976
1977 for (;;)
1978 {
1979 ssize_t res = read (sigfd, si, sizeof (si));
1980
1981 /* not ISO-C, as res might be -1, but works with SuS */
1982 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1983 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1984
1985 if (res < (ssize_t)sizeof (si))
1986 break;
1987 }
1988}
1989#endif
1990
1991#endif
1992
1219/*****************************************************************************/ 1993/*****************************************************************************/
1220 1994
1995#if EV_CHILD_ENABLE
1221static WL childs [EV_PID_HASHSIZE]; 1996static WL childs [EV_PID_HASHSIZE];
1222
1223#ifndef _WIN32
1224 1997
1225static ev_signal childev; 1998static ev_signal childev;
1226 1999
1227#ifndef WIFCONTINUED 2000#ifndef WIFCONTINUED
1228# define WIFCONTINUED(status) 0 2001# define WIFCONTINUED(status) 0
… …
1233child_reap (EV_P_ int chain, int pid, int status) 2006child_reap (EV_P_ int chain, int pid, int status)
1234{ 2007{
1235 ev_child *w; 2008 ev_child *w;
1236 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2009 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1237 2010
1238 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2011 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1239 { 2012 {
1240 if ((w->pid == pid || !w->pid) 2013 if ((w->pid == pid || !w->pid)
1241 && (!traced || (w->flags & 1))) 2014 && (!traced || (w->flags & 1)))
1242 { 2015 {
1243 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2016 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1268 /* make sure we are called again until all children have been reaped */ 2041 /* make sure we are called again until all children have been reaped */
1269 /* we need to do it this way so that the callback gets called before we continue */ 2042 /* we need to do it this way so that the callback gets called before we continue */
1270 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2043 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1271 2044
1272 child_reap (EV_A_ pid, pid, status); 2045 child_reap (EV_A_ pid, pid, status);
1273 if (EV_PID_HASHSIZE > 1) 2046 if ((EV_PID_HASHSIZE) > 1)
1274 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2047 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1275} 2048}
1276 2049
1277#endif 2050#endif
1278 2051
1279/*****************************************************************************/ 2052/*****************************************************************************/
1280 2053
2054#if EV_USE_IOCP
2055# include "ev_iocp.c"
2056#endif
1281#if EV_USE_PORT 2057#if EV_USE_PORT
1282# include "ev_port.c" 2058# include "ev_port.c"
1283#endif 2059#endif
1284#if EV_USE_KQUEUE 2060#if EV_USE_KQUEUE
1285# include "ev_kqueue.c" 2061# include "ev_kqueue.c"
… …
1292#endif 2068#endif
1293#if EV_USE_SELECT 2069#if EV_USE_SELECT
1294# include "ev_select.c" 2070# include "ev_select.c"
1295#endif 2071#endif
1296 2072
1297int 2073int ecb_cold
1298ev_version_major (void) 2074ev_version_major (void)
1299{ 2075{
1300 return EV_VERSION_MAJOR; 2076 return EV_VERSION_MAJOR;
1301} 2077}
1302 2078
1303int 2079int ecb_cold
1304ev_version_minor (void) 2080ev_version_minor (void)
1305{ 2081{
1306 return EV_VERSION_MINOR; 2082 return EV_VERSION_MINOR;
1307} 2083}
1308 2084
1309/* return true if we are running with elevated privileges and should ignore env variables */ 2085/* return true if we are running with elevated privileges and should ignore env variables */
1310int inline_size 2086int inline_size ecb_cold
1311enable_secure (void) 2087enable_secure (void)
1312{ 2088{
1313#ifdef _WIN32 2089#ifdef _WIN32
1314 return 0; 2090 return 0;
1315#else 2091#else
1316 return getuid () != geteuid () 2092 return getuid () != geteuid ()
1317 || getgid () != getegid (); 2093 || getgid () != getegid ();
1318#endif 2094#endif
1319} 2095}
1320 2096
1321unsigned int 2097unsigned int ecb_cold
1322ev_supported_backends (void) 2098ev_supported_backends (void)
1323{ 2099{
1324 unsigned int flags = 0; 2100 unsigned int flags = 0;
1325 2101
1326 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2102 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1330 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2106 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1331 2107
1332 return flags; 2108 return flags;
1333} 2109}
1334 2110
1335unsigned int 2111unsigned int ecb_cold
1336ev_recommended_backends (void) 2112ev_recommended_backends (void)
1337{ 2113{
1338 unsigned int flags = ev_supported_backends (); 2114 unsigned int flags = ev_supported_backends ();
1339 2115
1340#ifndef __NetBSD__ 2116#ifndef __NetBSD__
… …
1345#ifdef __APPLE__ 2121#ifdef __APPLE__
1346 /* only select works correctly on that "unix-certified" platform */ 2122 /* only select works correctly on that "unix-certified" platform */
1347 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2123 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1348 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2124 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1349#endif 2125#endif
2126#ifdef __FreeBSD__
2127 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2128#endif
1350 2129
1351 return flags; 2130 return flags;
1352} 2131}
1353 2132
1354unsigned int 2133unsigned int ecb_cold
1355ev_embeddable_backends (void) 2134ev_embeddable_backends (void)
1356{ 2135{
1357 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2136 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1358 2137
1359 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2138 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1360 /* please fix it and tell me how to detect the fix */ 2139 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1361 flags &= ~EVBACKEND_EPOLL; 2140 flags &= ~EVBACKEND_EPOLL;
1362 2141
1363 return flags; 2142 return flags;
1364} 2143}
1365 2144
1366unsigned int 2145unsigned int
1367ev_backend (EV_P) 2146ev_backend (EV_P)
1368{ 2147{
1369 return backend; 2148 return backend;
1370} 2149}
1371 2150
1372#if EV_MINIMAL < 2 2151#if EV_FEATURE_API
1373unsigned int 2152unsigned int
1374ev_loop_count (EV_P) 2153ev_iteration (EV_P)
1375{ 2154{
1376 return loop_count; 2155 return loop_count;
1377} 2156}
1378 2157
1379unsigned int 2158unsigned int
1380ev_loop_depth (EV_P) 2159ev_depth (EV_P)
1381{ 2160{
1382 return loop_depth; 2161 return loop_depth;
1383} 2162}
1384 2163
1385void 2164void
… …
1404ev_userdata (EV_P) 2183ev_userdata (EV_P)
1405{ 2184{
1406 return userdata; 2185 return userdata;
1407} 2186}
1408 2187
2188void
1409void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2189ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1410{ 2190{
1411 invoke_cb = invoke_pending_cb; 2191 invoke_cb = invoke_pending_cb;
1412} 2192}
1413 2193
1414void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P)) 2194void
2195ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1415{ 2196{
1416 suspend_cb = suspend_cb_; 2197 release_cb = release;
1417 resume_cb = resume_cb_; 2198 acquire_cb = acquire;
1418} 2199}
1419#endif 2200#endif
1420 2201
1421/* initialise a loop structure, must be zero-initialised */ 2202/* initialise a loop structure, must be zero-initialised */
1422static void noinline 2203static void noinline ecb_cold
1423loop_init (EV_P_ unsigned int flags) 2204loop_init (EV_P_ unsigned int flags)
1424{ 2205{
1425 if (!backend) 2206 if (!backend)
1426 { 2207 {
2208 origflags = flags;
2209
1427#if EV_USE_REALTIME 2210#if EV_USE_REALTIME
1428 if (!have_realtime) 2211 if (!have_realtime)
1429 { 2212 {
1430 struct timespec ts; 2213 struct timespec ts;
1431 2214
… …
1442 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2225 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1443 have_monotonic = 1; 2226 have_monotonic = 1;
1444 } 2227 }
1445#endif 2228#endif
1446 2229
1447 ev_rt_now = ev_time ();
1448 mn_now = get_clock ();
1449 now_floor = mn_now;
1450 rtmn_diff = ev_rt_now - mn_now;
1451#if EV_MINIMAL < 2
1452 invoke_cb = ev_invoke_pending;
1453#endif
1454
1455 io_blocktime = 0.;
1456 timeout_blocktime = 0.;
1457 backend = 0;
1458 backend_fd = -1;
1459 gotasync = 0;
1460#if EV_USE_INOTIFY
1461 fs_fd = -2;
1462#endif
1463
1464 /* pid check not overridable via env */ 2230 /* pid check not overridable via env */
1465#ifndef _WIN32 2231#ifndef _WIN32
1466 if (flags & EVFLAG_FORKCHECK) 2232 if (flags & EVFLAG_FORKCHECK)
1467 curpid = getpid (); 2233 curpid = getpid ();
1468#endif 2234#endif
… …
1470 if (!(flags & EVFLAG_NOENV) 2236 if (!(flags & EVFLAG_NOENV)
1471 && !enable_secure () 2237 && !enable_secure ()
1472 && getenv ("LIBEV_FLAGS")) 2238 && getenv ("LIBEV_FLAGS"))
1473 flags = atoi (getenv ("LIBEV_FLAGS")); 2239 flags = atoi (getenv ("LIBEV_FLAGS"));
1474 2240
1475 if (!(flags & 0x0000ffffU)) 2241 ev_rt_now = ev_time ();
2242 mn_now = get_clock ();
2243 now_floor = mn_now;
2244 rtmn_diff = ev_rt_now - mn_now;
2245#if EV_FEATURE_API
2246 invoke_cb = ev_invoke_pending;
2247#endif
2248
2249 io_blocktime = 0.;
2250 timeout_blocktime = 0.;
2251 backend = 0;
2252 backend_fd = -1;
2253 sig_pending = 0;
2254#if EV_ASYNC_ENABLE
2255 async_pending = 0;
2256#endif
2257 pipe_write_skipped = 0;
2258 pipe_write_wanted = 0;
2259#if EV_USE_INOTIFY
2260 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2261#endif
2262#if EV_USE_SIGNALFD
2263 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2264#endif
2265
2266 if (!(flags & EVBACKEND_MASK))
1476 flags |= ev_recommended_backends (); 2267 flags |= ev_recommended_backends ();
1477 2268
2269#if EV_USE_IOCP
2270 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2271#endif
1478#if EV_USE_PORT 2272#if EV_USE_PORT
1479 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2273 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1480#endif 2274#endif
1481#if EV_USE_KQUEUE 2275#if EV_USE_KQUEUE
1482 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2276 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1491 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2285 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1492#endif 2286#endif
1493 2287
1494 ev_prepare_init (&pending_w, pendingcb); 2288 ev_prepare_init (&pending_w, pendingcb);
1495 2289
2290#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1496 ev_init (&pipe_w, pipecb); 2291 ev_init (&pipe_w, pipecb);
1497 ev_set_priority (&pipe_w, EV_MAXPRI); 2292 ev_set_priority (&pipe_w, EV_MAXPRI);
2293#endif
1498 } 2294 }
1499} 2295}
1500 2296
1501/* free up a loop structure */ 2297/* free up a loop structure */
1502static void noinline 2298void ecb_cold
1503loop_destroy (EV_P) 2299ev_loop_destroy (EV_P)
1504{ 2300{
1505 int i; 2301 int i;
1506 2302
2303#if EV_MULTIPLICITY
2304 /* mimic free (0) */
2305 if (!EV_A)
2306 return;
2307#endif
2308
2309#if EV_CLEANUP_ENABLE
2310 /* queue cleanup watchers (and execute them) */
2311 if (expect_false (cleanupcnt))
2312 {
2313 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2314 EV_INVOKE_PENDING;
2315 }
2316#endif
2317
2318#if EV_CHILD_ENABLE
2319 if (ev_is_active (&childev))
2320 {
2321 ev_ref (EV_A); /* child watcher */
2322 ev_signal_stop (EV_A_ &childev);
2323 }
2324#endif
2325
1507 if (ev_is_active (&pipe_w)) 2326 if (ev_is_active (&pipe_w))
1508 { 2327 {
1509 ev_ref (EV_A); /* signal watcher */ 2328 /*ev_ref (EV_A);*/
1510 ev_io_stop (EV_A_ &pipe_w); 2329 /*ev_io_stop (EV_A_ &pipe_w);*/
1511 2330
1512#if EV_USE_EVENTFD 2331#if EV_USE_EVENTFD
1513 if (evfd >= 0) 2332 if (evfd >= 0)
1514 close (evfd); 2333 close (evfd);
1515#endif 2334#endif
1516 2335
1517 if (evpipe [0] >= 0) 2336 if (evpipe [0] >= 0)
1518 { 2337 {
1519 close (evpipe [0]); 2338 EV_WIN32_CLOSE_FD (evpipe [0]);
1520 close (evpipe [1]); 2339 EV_WIN32_CLOSE_FD (evpipe [1]);
1521 } 2340 }
1522 } 2341 }
2342
2343#if EV_USE_SIGNALFD
2344 if (ev_is_active (&sigfd_w))
2345 close (sigfd);
2346#endif
1523 2347
1524#if EV_USE_INOTIFY 2348#if EV_USE_INOTIFY
1525 if (fs_fd >= 0) 2349 if (fs_fd >= 0)
1526 close (fs_fd); 2350 close (fs_fd);
1527#endif 2351#endif
1528 2352
1529 if (backend_fd >= 0) 2353 if (backend_fd >= 0)
1530 close (backend_fd); 2354 close (backend_fd);
1531 2355
2356#if EV_USE_IOCP
2357 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2358#endif
1532#if EV_USE_PORT 2359#if EV_USE_PORT
1533 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2360 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1534#endif 2361#endif
1535#if EV_USE_KQUEUE 2362#if EV_USE_KQUEUE
1536 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2363 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1551#if EV_IDLE_ENABLE 2378#if EV_IDLE_ENABLE
1552 array_free (idle, [i]); 2379 array_free (idle, [i]);
1553#endif 2380#endif
1554 } 2381 }
1555 2382
1556 ev_free (anfds); anfdmax = 0; 2383 ev_free (anfds); anfds = 0; anfdmax = 0;
1557 2384
1558 /* have to use the microsoft-never-gets-it-right macro */ 2385 /* have to use the microsoft-never-gets-it-right macro */
1559 array_free (rfeed, EMPTY); 2386 array_free (rfeed, EMPTY);
1560 array_free (fdchange, EMPTY); 2387 array_free (fdchange, EMPTY);
1561 array_free (timer, EMPTY); 2388 array_free (timer, EMPTY);
… …
1563 array_free (periodic, EMPTY); 2390 array_free (periodic, EMPTY);
1564#endif 2391#endif
1565#if EV_FORK_ENABLE 2392#if EV_FORK_ENABLE
1566 array_free (fork, EMPTY); 2393 array_free (fork, EMPTY);
1567#endif 2394#endif
2395#if EV_CLEANUP_ENABLE
2396 array_free (cleanup, EMPTY);
2397#endif
1568 array_free (prepare, EMPTY); 2398 array_free (prepare, EMPTY);
1569 array_free (check, EMPTY); 2399 array_free (check, EMPTY);
1570#if EV_ASYNC_ENABLE 2400#if EV_ASYNC_ENABLE
1571 array_free (async, EMPTY); 2401 array_free (async, EMPTY);
1572#endif 2402#endif
1573 2403
1574 backend = 0; 2404 backend = 0;
2405
2406#if EV_MULTIPLICITY
2407 if (ev_is_default_loop (EV_A))
2408#endif
2409 ev_default_loop_ptr = 0;
2410#if EV_MULTIPLICITY
2411 else
2412 ev_free (EV_A);
2413#endif
1575} 2414}
1576 2415
1577#if EV_USE_INOTIFY 2416#if EV_USE_INOTIFY
1578inline_size void infy_fork (EV_P); 2417inline_size void infy_fork (EV_P);
1579#endif 2418#endif
… …
1594 infy_fork (EV_A); 2433 infy_fork (EV_A);
1595#endif 2434#endif
1596 2435
1597 if (ev_is_active (&pipe_w)) 2436 if (ev_is_active (&pipe_w))
1598 { 2437 {
1599 /* this "locks" the handlers against writing to the pipe */ 2438 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1600 /* while we modify the fd vars */
1601 gotsig = 1;
1602#if EV_ASYNC_ENABLE
1603 gotasync = 1;
1604#endif
1605 2439
1606 ev_ref (EV_A); 2440 ev_ref (EV_A);
1607 ev_io_stop (EV_A_ &pipe_w); 2441 ev_io_stop (EV_A_ &pipe_w);
1608 2442
1609#if EV_USE_EVENTFD 2443#if EV_USE_EVENTFD
… …
1611 close (evfd); 2445 close (evfd);
1612#endif 2446#endif
1613 2447
1614 if (evpipe [0] >= 0) 2448 if (evpipe [0] >= 0)
1615 { 2449 {
1616 close (evpipe [0]); 2450 EV_WIN32_CLOSE_FD (evpipe [0]);
1617 close (evpipe [1]); 2451 EV_WIN32_CLOSE_FD (evpipe [1]);
1618 } 2452 }
1619 2453
2454#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1620 evpipe_init (EV_A); 2455 evpipe_init (EV_A);
1621 /* now iterate over everything, in case we missed something */ 2456 /* now iterate over everything, in case we missed something */
1622 pipecb (EV_A_ &pipe_w, EV_READ); 2457 pipecb (EV_A_ &pipe_w, EV_READ);
2458#endif
1623 } 2459 }
1624 2460
1625 postfork = 0; 2461 postfork = 0;
1626} 2462}
1627 2463
1628#if EV_MULTIPLICITY 2464#if EV_MULTIPLICITY
1629 2465
1630struct ev_loop * 2466struct ev_loop * ecb_cold
1631ev_loop_new (unsigned int flags) 2467ev_loop_new (unsigned int flags)
1632{ 2468{
1633 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2469 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1634 2470
1635 memset (loop, 0, sizeof (struct ev_loop)); 2471 memset (EV_A, 0, sizeof (struct ev_loop));
1636
1637 loop_init (EV_A_ flags); 2472 loop_init (EV_A_ flags);
1638 2473
1639 if (ev_backend (EV_A)) 2474 if (ev_backend (EV_A))
1640 return loop; 2475 return EV_A;
1641 2476
2477 ev_free (EV_A);
1642 return 0; 2478 return 0;
1643} 2479}
1644 2480
1645void
1646ev_loop_destroy (EV_P)
1647{
1648 loop_destroy (EV_A);
1649 ev_free (loop);
1650}
1651
1652void
1653ev_loop_fork (EV_P)
1654{
1655 postfork = 1; /* must be in line with ev_default_fork */
1656}
1657#endif /* multiplicity */ 2481#endif /* multiplicity */
1658 2482
1659#if EV_VERIFY 2483#if EV_VERIFY
1660static void noinline 2484static void noinline ecb_cold
1661verify_watcher (EV_P_ W w) 2485verify_watcher (EV_P_ W w)
1662{ 2486{
1663 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2487 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1664 2488
1665 if (w->pending) 2489 if (w->pending)
1666 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2490 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1667} 2491}
1668 2492
1669static void noinline 2493static void noinline ecb_cold
1670verify_heap (EV_P_ ANHE *heap, int N) 2494verify_heap (EV_P_ ANHE *heap, int N)
1671{ 2495{
1672 int i; 2496 int i;
1673 2497
1674 for (i = HEAP0; i < N + HEAP0; ++i) 2498 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1679 2503
1680 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2504 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1681 } 2505 }
1682} 2506}
1683 2507
1684static void noinline 2508static void noinline ecb_cold
1685array_verify (EV_P_ W *ws, int cnt) 2509array_verify (EV_P_ W *ws, int cnt)
1686{ 2510{
1687 while (cnt--) 2511 while (cnt--)
1688 { 2512 {
1689 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2513 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1690 verify_watcher (EV_A_ ws [cnt]); 2514 verify_watcher (EV_A_ ws [cnt]);
1691 } 2515 }
1692} 2516}
1693#endif 2517#endif
1694 2518
1695#if EV_MINIMAL < 2 2519#if EV_FEATURE_API
1696void 2520void ecb_cold
1697ev_loop_verify (EV_P) 2521ev_verify (EV_P)
1698{ 2522{
1699#if EV_VERIFY 2523#if EV_VERIFY
1700 int i; 2524 int i;
1701 WL w; 2525 WL w;
1702 2526
… …
1736#if EV_FORK_ENABLE 2560#if EV_FORK_ENABLE
1737 assert (forkmax >= forkcnt); 2561 assert (forkmax >= forkcnt);
1738 array_verify (EV_A_ (W *)forks, forkcnt); 2562 array_verify (EV_A_ (W *)forks, forkcnt);
1739#endif 2563#endif
1740 2564
2565#if EV_CLEANUP_ENABLE
2566 assert (cleanupmax >= cleanupcnt);
2567 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2568#endif
2569
1741#if EV_ASYNC_ENABLE 2570#if EV_ASYNC_ENABLE
1742 assert (asyncmax >= asynccnt); 2571 assert (asyncmax >= asynccnt);
1743 array_verify (EV_A_ (W *)asyncs, asynccnt); 2572 array_verify (EV_A_ (W *)asyncs, asynccnt);
1744#endif 2573#endif
1745 2574
2575#if EV_PREPARE_ENABLE
1746 assert (preparemax >= preparecnt); 2576 assert (preparemax >= preparecnt);
1747 array_verify (EV_A_ (W *)prepares, preparecnt); 2577 array_verify (EV_A_ (W *)prepares, preparecnt);
2578#endif
1748 2579
2580#if EV_CHECK_ENABLE
1749 assert (checkmax >= checkcnt); 2581 assert (checkmax >= checkcnt);
1750 array_verify (EV_A_ (W *)checks, checkcnt); 2582 array_verify (EV_A_ (W *)checks, checkcnt);
2583#endif
1751 2584
1752# if 0 2585# if 0
2586#if EV_CHILD_ENABLE
1753 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2587 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1754 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2588 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2589#endif
1755# endif 2590# endif
1756#endif 2591#endif
1757} 2592}
1758#endif 2593#endif
1759 2594
1760#if EV_MULTIPLICITY 2595#if EV_MULTIPLICITY
1761struct ev_loop * 2596struct ev_loop * ecb_cold
1762ev_default_loop_init (unsigned int flags)
1763#else 2597#else
1764int 2598int
2599#endif
1765ev_default_loop (unsigned int flags) 2600ev_default_loop (unsigned int flags)
1766#endif
1767{ 2601{
1768 if (!ev_default_loop_ptr) 2602 if (!ev_default_loop_ptr)
1769 { 2603 {
1770#if EV_MULTIPLICITY 2604#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2605 EV_P = ev_default_loop_ptr = &default_loop_struct;
1772#else 2606#else
1773 ev_default_loop_ptr = 1; 2607 ev_default_loop_ptr = 1;
1774#endif 2608#endif
1775 2609
1776 loop_init (EV_A_ flags); 2610 loop_init (EV_A_ flags);
1777 2611
1778 if (ev_backend (EV_A)) 2612 if (ev_backend (EV_A))
1779 { 2613 {
1780#ifndef _WIN32 2614#if EV_CHILD_ENABLE
1781 ev_signal_init (&childev, childcb, SIGCHLD); 2615 ev_signal_init (&childev, childcb, SIGCHLD);
1782 ev_set_priority (&childev, EV_MAXPRI); 2616 ev_set_priority (&childev, EV_MAXPRI);
1783 ev_signal_start (EV_A_ &childev); 2617 ev_signal_start (EV_A_ &childev);
1784 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2618 ev_unref (EV_A); /* child watcher should not keep loop alive */
1785#endif 2619#endif
… …
1790 2624
1791 return ev_default_loop_ptr; 2625 return ev_default_loop_ptr;
1792} 2626}
1793 2627
1794void 2628void
1795ev_default_destroy (void) 2629ev_loop_fork (EV_P)
1796{ 2630{
1797#if EV_MULTIPLICITY
1798 struct ev_loop *loop = ev_default_loop_ptr;
1799#endif
1800
1801 ev_default_loop_ptr = 0;
1802
1803#ifndef _WIN32
1804 ev_ref (EV_A); /* child watcher */
1805 ev_signal_stop (EV_A_ &childev);
1806#endif
1807
1808 loop_destroy (EV_A);
1809}
1810
1811void
1812ev_default_fork (void)
1813{
1814#if EV_MULTIPLICITY
1815 struct ev_loop *loop = ev_default_loop_ptr;
1816#endif
1817
1818 postfork = 1; /* must be in line with ev_loop_fork */ 2631 postfork = 1; /* must be in line with ev_default_fork */
1819} 2632}
1820 2633
1821/*****************************************************************************/ 2634/*****************************************************************************/
1822 2635
1823void 2636void
1824ev_invoke (EV_P_ void *w, int revents) 2637ev_invoke (EV_P_ void *w, int revents)
1825{ 2638{
1826 EV_CB_INVOKE ((W)w, revents); 2639 EV_CB_INVOKE ((W)w, revents);
2640}
2641
2642unsigned int
2643ev_pending_count (EV_P)
2644{
2645 int pri;
2646 unsigned int count = 0;
2647
2648 for (pri = NUMPRI; pri--; )
2649 count += pendingcnt [pri];
2650
2651 return count;
1827} 2652}
1828 2653
1829void noinline 2654void noinline
1830ev_invoke_pending (EV_P) 2655ev_invoke_pending (EV_P)
1831{ 2656{
… …
1833 2658
1834 for (pri = NUMPRI; pri--; ) 2659 for (pri = NUMPRI; pri--; )
1835 while (pendingcnt [pri]) 2660 while (pendingcnt [pri])
1836 { 2661 {
1837 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2662 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1838
1839 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1840 /* ^ this is no longer true, as pending_w could be here */
1841 2663
1842 p->w->pending = 0; 2664 p->w->pending = 0;
1843 EV_CB_INVOKE (p->w, p->events); 2665 EV_CB_INVOKE (p->w, p->events);
1844 EV_FREQUENT_CHECK; 2666 EV_FREQUENT_CHECK;
1845 } 2667 }
… …
1902 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
1903 feed_reverse (EV_A_ (W)w); 2725 feed_reverse (EV_A_ (W)w);
1904 } 2726 }
1905 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2727 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1906 2728
1907 feed_reverse_done (EV_A_ EV_TIMEOUT); 2729 feed_reverse_done (EV_A_ EV_TIMER);
1908 } 2730 }
1909} 2731}
1910 2732
1911#if EV_PERIODIC_ENABLE 2733#if EV_PERIODIC_ENABLE
2734
2735static void noinline
2736periodic_recalc (EV_P_ ev_periodic *w)
2737{
2738 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2739 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2740
2741 /* the above almost always errs on the low side */
2742 while (at <= ev_rt_now)
2743 {
2744 ev_tstamp nat = at + w->interval;
2745
2746 /* when resolution fails us, we use ev_rt_now */
2747 if (expect_false (nat == at))
2748 {
2749 at = ev_rt_now;
2750 break;
2751 }
2752
2753 at = nat;
2754 }
2755
2756 ev_at (w) = at;
2757}
2758
1912/* make periodics pending */ 2759/* make periodics pending */
1913inline_size void 2760inline_size void
1914periodics_reify (EV_P) 2761periodics_reify (EV_P)
1915{ 2762{
1916 EV_FREQUENT_CHECK; 2763 EV_FREQUENT_CHECK;
… …
1935 ANHE_at_cache (periodics [HEAP0]); 2782 ANHE_at_cache (periodics [HEAP0]);
1936 downheap (periodics, periodiccnt, HEAP0); 2783 downheap (periodics, periodiccnt, HEAP0);
1937 } 2784 }
1938 else if (w->interval) 2785 else if (w->interval)
1939 { 2786 {
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2787 periodic_recalc (EV_A_ w);
1941 /* if next trigger time is not sufficiently in the future, put it there */
1942 /* this might happen because of floating point inexactness */
1943 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1944 {
1945 ev_at (w) += w->interval;
1946
1947 /* if interval is unreasonably low we might still have a time in the past */
1948 /* so correct this. this will make the periodic very inexact, but the user */
1949 /* has effectively asked to get triggered more often than possible */
1950 if (ev_at (w) < ev_rt_now)
1951 ev_at (w) = ev_rt_now;
1952 }
1953
1954 ANHE_at_cache (periodics [HEAP0]); 2788 ANHE_at_cache (periodics [HEAP0]);
1955 downheap (periodics, periodiccnt, HEAP0); 2789 downheap (periodics, periodiccnt, HEAP0);
1956 } 2790 }
1957 else 2791 else
1958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2792 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1965 feed_reverse_done (EV_A_ EV_PERIODIC); 2799 feed_reverse_done (EV_A_ EV_PERIODIC);
1966 } 2800 }
1967} 2801}
1968 2802
1969/* simply recalculate all periodics */ 2803/* simply recalculate all periodics */
1970/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2804/* TODO: maybe ensure that at least one event happens when jumping forward? */
1971static void noinline 2805static void noinline ecb_cold
1972periodics_reschedule (EV_P) 2806periodics_reschedule (EV_P)
1973{ 2807{
1974 int i; 2808 int i;
1975 2809
1976 /* adjust periodics after time jump */ 2810 /* adjust periodics after time jump */
… …
1979 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2813 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1980 2814
1981 if (w->reschedule_cb) 2815 if (w->reschedule_cb)
1982 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2816 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1983 else if (w->interval) 2817 else if (w->interval)
1984 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2818 periodic_recalc (EV_A_ w);
1985 2819
1986 ANHE_at_cache (periodics [i]); 2820 ANHE_at_cache (periodics [i]);
1987 } 2821 }
1988 2822
1989 reheap (periodics, periodiccnt); 2823 reheap (periodics, periodiccnt);
1990} 2824}
1991#endif 2825#endif
1992 2826
1993/* adjust all timers by a given offset */ 2827/* adjust all timers by a given offset */
1994static void noinline 2828static void noinline ecb_cold
1995timers_reschedule (EV_P_ ev_tstamp adjust) 2829timers_reschedule (EV_P_ ev_tstamp adjust)
1996{ 2830{
1997 int i; 2831 int i;
1998 2832
1999 for (i = 0; i < timercnt; ++i) 2833 for (i = 0; i < timercnt; ++i)
… …
2003 ANHE_at_cache (*he); 2837 ANHE_at_cache (*he);
2004 } 2838 }
2005} 2839}
2006 2840
2007/* fetch new monotonic and realtime times from the kernel */ 2841/* fetch new monotonic and realtime times from the kernel */
2008/* also detetc if there was a timejump, and act accordingly */ 2842/* also detect if there was a timejump, and act accordingly */
2009inline_speed void 2843inline_speed void
2010time_update (EV_P_ ev_tstamp max_block) 2844time_update (EV_P_ ev_tstamp max_block)
2011{ 2845{
2012#if EV_USE_MONOTONIC 2846#if EV_USE_MONOTONIC
2013 if (expect_true (have_monotonic)) 2847 if (expect_true (have_monotonic))
… …
2036 * doesn't hurt either as we only do this on time-jumps or 2870 * doesn't hurt either as we only do this on time-jumps or
2037 * in the unlikely event of having been preempted here. 2871 * in the unlikely event of having been preempted here.
2038 */ 2872 */
2039 for (i = 4; --i; ) 2873 for (i = 4; --i; )
2040 { 2874 {
2875 ev_tstamp diff;
2041 rtmn_diff = ev_rt_now - mn_now; 2876 rtmn_diff = ev_rt_now - mn_now;
2042 2877
2878 diff = odiff - rtmn_diff;
2879
2043 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2880 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2044 return; /* all is well */ 2881 return; /* all is well */
2045 2882
2046 ev_rt_now = ev_time (); 2883 ev_rt_now = ev_time ();
2047 mn_now = get_clock (); 2884 mn_now = get_clock ();
2048 now_floor = mn_now; 2885 now_floor = mn_now;
… …
2071 mn_now = ev_rt_now; 2908 mn_now = ev_rt_now;
2072 } 2909 }
2073} 2910}
2074 2911
2075void 2912void
2076ev_loop (EV_P_ int flags) 2913ev_run (EV_P_ int flags)
2077{ 2914{
2078#if EV_MINIMAL < 2 2915#if EV_FEATURE_API
2079 ++loop_depth; 2916 ++loop_depth;
2080#endif 2917#endif
2081 2918
2919 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2920
2082 loop_done = EVUNLOOP_CANCEL; 2921 loop_done = EVBREAK_CANCEL;
2083 2922
2084 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2923 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085 2924
2086 do 2925 do
2087 { 2926 {
2088#if EV_VERIFY >= 2 2927#if EV_VERIFY >= 2
2089 ev_loop_verify (EV_A); 2928 ev_verify (EV_A);
2090#endif 2929#endif
2091 2930
2092#ifndef _WIN32 2931#ifndef _WIN32
2093 if (expect_false (curpid)) /* penalise the forking check even more */ 2932 if (expect_false (curpid)) /* penalise the forking check even more */
2094 if (expect_false (getpid () != curpid)) 2933 if (expect_false (getpid () != curpid))
… …
2106 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2945 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2107 EV_INVOKE_PENDING; 2946 EV_INVOKE_PENDING;
2108 } 2947 }
2109#endif 2948#endif
2110 2949
2950#if EV_PREPARE_ENABLE
2111 /* queue prepare watchers (and execute them) */ 2951 /* queue prepare watchers (and execute them) */
2112 if (expect_false (preparecnt)) 2952 if (expect_false (preparecnt))
2113 { 2953 {
2114 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2954 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2115 EV_INVOKE_PENDING; 2955 EV_INVOKE_PENDING;
2116 } 2956 }
2957#endif
2958
2959 if (expect_false (loop_done))
2960 break;
2117 2961
2118 /* we might have forked, so reify kernel state if necessary */ 2962 /* we might have forked, so reify kernel state if necessary */
2119 if (expect_false (postfork)) 2963 if (expect_false (postfork))
2120 loop_fork (EV_A); 2964 loop_fork (EV_A);
2121 2965
… …
2125 /* calculate blocking time */ 2969 /* calculate blocking time */
2126 { 2970 {
2127 ev_tstamp waittime = 0.; 2971 ev_tstamp waittime = 0.;
2128 ev_tstamp sleeptime = 0.; 2972 ev_tstamp sleeptime = 0.;
2129 2973
2974 /* remember old timestamp for io_blocktime calculation */
2975 ev_tstamp prev_mn_now = mn_now;
2976
2977 /* update time to cancel out callback processing overhead */
2978 time_update (EV_A_ 1e100);
2979
2980 /* from now on, we want a pipe-wake-up */
2981 pipe_write_wanted = 1;
2982
2983 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2984
2130 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2985 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2131 { 2986 {
2132 /* remember old timestamp for io_blocktime calculation */
2133 ev_tstamp prev_mn_now = mn_now;
2134
2135 /* update time to cancel out callback processing overhead */
2136 time_update (EV_A_ 1e100);
2137
2138 waittime = MAX_BLOCKTIME; 2987 waittime = MAX_BLOCKTIME;
2139 2988
2140 if (timercnt) 2989 if (timercnt)
2141 { 2990 {
2142 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2143 if (waittime > to) waittime = to; 2992 if (waittime > to) waittime = to;
2144 } 2993 }
2145 2994
2146#if EV_PERIODIC_ENABLE 2995#if EV_PERIODIC_ENABLE
2147 if (periodiccnt) 2996 if (periodiccnt)
2148 { 2997 {
2149 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2150 if (waittime > to) waittime = to; 2999 if (waittime > to) waittime = to;
2151 } 3000 }
2152#endif 3001#endif
2153 3002
2154 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3003 /* don't let timeouts decrease the waittime below timeout_blocktime */
2155 if (expect_false (waittime < timeout_blocktime)) 3004 if (expect_false (waittime < timeout_blocktime))
2156 waittime = timeout_blocktime; 3005 waittime = timeout_blocktime;
3006
3007 /* at this point, we NEED to wait, so we have to ensure */
3008 /* to pass a minimum nonzero value to the backend */
3009 if (expect_false (waittime < backend_mintime))
3010 waittime = backend_mintime;
2157 3011
2158 /* extra check because io_blocktime is commonly 0 */ 3012 /* extra check because io_blocktime is commonly 0 */
2159 if (expect_false (io_blocktime)) 3013 if (expect_false (io_blocktime))
2160 { 3014 {
2161 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3015 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2162 3016
2163 if (sleeptime > waittime - backend_fudge) 3017 if (sleeptime > waittime - backend_mintime)
2164 sleeptime = waittime - backend_fudge; 3018 sleeptime = waittime - backend_mintime;
2165 3019
2166 if (expect_true (sleeptime > 0.)) 3020 if (expect_true (sleeptime > 0.))
2167 { 3021 {
2168 ev_sleep (sleeptime); 3022 ev_sleep (sleeptime);
2169 waittime -= sleeptime; 3023 waittime -= sleeptime;
2170 } 3024 }
2171 } 3025 }
2172 } 3026 }
2173 3027
2174#if EV_MINIMAL < 2 3028#if EV_FEATURE_API
2175 ++loop_count; 3029 ++loop_count;
2176#endif 3030#endif
3031 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2177 backend_poll (EV_A_ waittime); 3032 backend_poll (EV_A_ waittime);
3033 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3034
3035 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3036
3037 if (pipe_write_skipped)
3038 {
3039 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3040 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3041 }
3042
2178 3043
2179 /* update ev_rt_now, do magic */ 3044 /* update ev_rt_now, do magic */
2180 time_update (EV_A_ waittime + sleeptime); 3045 time_update (EV_A_ waittime + sleeptime);
2181 } 3046 }
2182 3047
… …
2189#if EV_IDLE_ENABLE 3054#if EV_IDLE_ENABLE
2190 /* queue idle watchers unless other events are pending */ 3055 /* queue idle watchers unless other events are pending */
2191 idle_reify (EV_A); 3056 idle_reify (EV_A);
2192#endif 3057#endif
2193 3058
3059#if EV_CHECK_ENABLE
2194 /* queue check watchers, to be executed first */ 3060 /* queue check watchers, to be executed first */
2195 if (expect_false (checkcnt)) 3061 if (expect_false (checkcnt))
2196 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3062 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3063#endif
2197 3064
2198 EV_INVOKE_PENDING; 3065 EV_INVOKE_PENDING;
2199 } 3066 }
2200 while (expect_true ( 3067 while (expect_true (
2201 activecnt 3068 activecnt
2202 && !loop_done 3069 && !loop_done
2203 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3070 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2204 )); 3071 ));
2205 3072
2206 if (loop_done == EVUNLOOP_ONE) 3073 if (loop_done == EVBREAK_ONE)
2207 loop_done = EVUNLOOP_CANCEL; 3074 loop_done = EVBREAK_CANCEL;
2208 3075
2209#if EV_MINIMAL < 2 3076#if EV_FEATURE_API
2210 --loop_depth; 3077 --loop_depth;
2211#endif 3078#endif
2212} 3079}
2213 3080
2214void 3081void
2215ev_unloop (EV_P_ int how) 3082ev_break (EV_P_ int how)
2216{ 3083{
2217 loop_done = how; 3084 loop_done = how;
2218} 3085}
2219 3086
2220void 3087void
… …
2267inline_size void 3134inline_size void
2268wlist_del (WL *head, WL elem) 3135wlist_del (WL *head, WL elem)
2269{ 3136{
2270 while (*head) 3137 while (*head)
2271 { 3138 {
2272 if (*head == elem) 3139 if (expect_true (*head == elem))
2273 { 3140 {
2274 *head = elem->next; 3141 *head = elem->next;
2275 return; 3142 break;
2276 } 3143 }
2277 3144
2278 head = &(*head)->next; 3145 head = &(*head)->next;
2279 } 3146 }
2280} 3147}
… …
2340 3207
2341 if (expect_false (ev_is_active (w))) 3208 if (expect_false (ev_is_active (w)))
2342 return; 3209 return;
2343 3210
2344 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3211 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2345 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3212 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2346 3213
2347 EV_FREQUENT_CHECK; 3214 EV_FREQUENT_CHECK;
2348 3215
2349 ev_start (EV_A_ (W)w, 1); 3216 ev_start (EV_A_ (W)w, 1);
2350 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3217 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2351 wlist_add (&anfds[fd].head, (WL)w); 3218 wlist_add (&anfds[fd].head, (WL)w);
2352 3219
2353 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3220 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2354 w->events &= ~EV__IOFDSET; 3221 w->events &= ~EV__IOFDSET;
2355 3222
2356 EV_FREQUENT_CHECK; 3223 EV_FREQUENT_CHECK;
2357} 3224}
2358 3225
… …
2368 EV_FREQUENT_CHECK; 3235 EV_FREQUENT_CHECK;
2369 3236
2370 wlist_del (&anfds[w->fd].head, (WL)w); 3237 wlist_del (&anfds[w->fd].head, (WL)w);
2371 ev_stop (EV_A_ (W)w); 3238 ev_stop (EV_A_ (W)w);
2372 3239
2373 fd_change (EV_A_ w->fd, 1); 3240 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2374 3241
2375 EV_FREQUENT_CHECK; 3242 EV_FREQUENT_CHECK;
2376} 3243}
2377 3244
2378void noinline 3245void noinline
… …
2420 timers [active] = timers [timercnt + HEAP0]; 3287 timers [active] = timers [timercnt + HEAP0];
2421 adjustheap (timers, timercnt, active); 3288 adjustheap (timers, timercnt, active);
2422 } 3289 }
2423 } 3290 }
2424 3291
2425 EV_FREQUENT_CHECK;
2426
2427 ev_at (w) -= mn_now; 3292 ev_at (w) -= mn_now;
2428 3293
2429 ev_stop (EV_A_ (W)w); 3294 ev_stop (EV_A_ (W)w);
3295
3296 EV_FREQUENT_CHECK;
2430} 3297}
2431 3298
2432void noinline 3299void noinline
2433ev_timer_again (EV_P_ ev_timer *w) 3300ev_timer_again (EV_P_ ev_timer *w)
2434{ 3301{
… …
2452 } 3319 }
2453 3320
2454 EV_FREQUENT_CHECK; 3321 EV_FREQUENT_CHECK;
2455} 3322}
2456 3323
3324ev_tstamp
3325ev_timer_remaining (EV_P_ ev_timer *w)
3326{
3327 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3328}
3329
2457#if EV_PERIODIC_ENABLE 3330#if EV_PERIODIC_ENABLE
2458void noinline 3331void noinline
2459ev_periodic_start (EV_P_ ev_periodic *w) 3332ev_periodic_start (EV_P_ ev_periodic *w)
2460{ 3333{
2461 if (expect_false (ev_is_active (w))) 3334 if (expect_false (ev_is_active (w)))
… …
2464 if (w->reschedule_cb) 3337 if (w->reschedule_cb)
2465 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3338 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2466 else if (w->interval) 3339 else if (w->interval)
2467 { 3340 {
2468 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3341 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2469 /* this formula differs from the one in periodic_reify because we do not always round up */ 3342 periodic_recalc (EV_A_ w);
2470 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2471 } 3343 }
2472 else 3344 else
2473 ev_at (w) = w->offset; 3345 ev_at (w) = w->offset;
2474 3346
2475 EV_FREQUENT_CHECK; 3347 EV_FREQUENT_CHECK;
… …
2507 periodics [active] = periodics [periodiccnt + HEAP0]; 3379 periodics [active] = periodics [periodiccnt + HEAP0];
2508 adjustheap (periodics, periodiccnt, active); 3380 adjustheap (periodics, periodiccnt, active);
2509 } 3381 }
2510 } 3382 }
2511 3383
2512 EV_FREQUENT_CHECK;
2513
2514 ev_stop (EV_A_ (W)w); 3384 ev_stop (EV_A_ (W)w);
3385
3386 EV_FREQUENT_CHECK;
2515} 3387}
2516 3388
2517void noinline 3389void noinline
2518ev_periodic_again (EV_P_ ev_periodic *w) 3390ev_periodic_again (EV_P_ ev_periodic *w)
2519{ 3391{
… …
2525 3397
2526#ifndef SA_RESTART 3398#ifndef SA_RESTART
2527# define SA_RESTART 0 3399# define SA_RESTART 0
2528#endif 3400#endif
2529 3401
3402#if EV_SIGNAL_ENABLE
3403
2530void noinline 3404void noinline
2531ev_signal_start (EV_P_ ev_signal *w) 3405ev_signal_start (EV_P_ ev_signal *w)
2532{ 3406{
2533#if EV_MULTIPLICITY
2534 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2535#endif
2536 if (expect_false (ev_is_active (w))) 3407 if (expect_false (ev_is_active (w)))
2537 return; 3408 return;
2538 3409
2539 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3410 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2540 3411
2541 evpipe_init (EV_A); 3412#if EV_MULTIPLICITY
3413 assert (("libev: a signal must not be attached to two different loops",
3414 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2542 3415
2543 EV_FREQUENT_CHECK; 3416 signals [w->signum - 1].loop = EV_A;
3417#endif
2544 3418
3419 EV_FREQUENT_CHECK;
3420
3421#if EV_USE_SIGNALFD
3422 if (sigfd == -2)
2545 { 3423 {
2546#ifndef _WIN32 3424 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2547 sigset_t full, prev; 3425 if (sigfd < 0 && errno == EINVAL)
2548 sigfillset (&full); 3426 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2549 sigprocmask (SIG_SETMASK, &full, &prev);
2550#endif
2551 3427
2552 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3428 if (sigfd >= 0)
3429 {
3430 fd_intern (sigfd); /* doing it twice will not hurt */
2553 3431
2554#ifndef _WIN32 3432 sigemptyset (&sigfd_set);
2555 sigprocmask (SIG_SETMASK, &prev, 0); 3433
2556#endif 3434 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3435 ev_set_priority (&sigfd_w, EV_MAXPRI);
3436 ev_io_start (EV_A_ &sigfd_w);
3437 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3438 }
2557 } 3439 }
3440
3441 if (sigfd >= 0)
3442 {
3443 /* TODO: check .head */
3444 sigaddset (&sigfd_set, w->signum);
3445 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3446
3447 signalfd (sigfd, &sigfd_set, 0);
3448 }
3449#endif
2558 3450
2559 ev_start (EV_A_ (W)w, 1); 3451 ev_start (EV_A_ (W)w, 1);
2560 wlist_add (&signals [w->signum - 1].head, (WL)w); 3452 wlist_add (&signals [w->signum - 1].head, (WL)w);
2561 3453
2562 if (!((WL)w)->next) 3454 if (!((WL)w)->next)
3455# if EV_USE_SIGNALFD
3456 if (sigfd < 0) /*TODO*/
3457# endif
2563 { 3458 {
2564#if _WIN32 3459# ifdef _WIN32
3460 evpipe_init (EV_A);
3461
2565 signal (w->signum, ev_sighandler); 3462 signal (w->signum, ev_sighandler);
2566#else 3463# else
2567 struct sigaction sa; 3464 struct sigaction sa;
3465
3466 evpipe_init (EV_A);
3467
2568 sa.sa_handler = ev_sighandler; 3468 sa.sa_handler = ev_sighandler;
2569 sigfillset (&sa.sa_mask); 3469 sigfillset (&sa.sa_mask);
2570 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3470 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2571 sigaction (w->signum, &sa, 0); 3471 sigaction (w->signum, &sa, 0);
3472
3473 if (origflags & EVFLAG_NOSIGMASK)
3474 {
3475 sigemptyset (&sa.sa_mask);
3476 sigaddset (&sa.sa_mask, w->signum);
3477 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3478 }
2572#endif 3479#endif
2573 } 3480 }
2574 3481
2575 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2576} 3483}
2577 3484
2578void noinline 3485void noinline
… …
2586 3493
2587 wlist_del (&signals [w->signum - 1].head, (WL)w); 3494 wlist_del (&signals [w->signum - 1].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3495 ev_stop (EV_A_ (W)w);
2589 3496
2590 if (!signals [w->signum - 1].head) 3497 if (!signals [w->signum - 1].head)
3498 {
3499#if EV_MULTIPLICITY
3500 signals [w->signum - 1].loop = 0; /* unattach from signal */
3501#endif
3502#if EV_USE_SIGNALFD
3503 if (sigfd >= 0)
3504 {
3505 sigset_t ss;
3506
3507 sigemptyset (&ss);
3508 sigaddset (&ss, w->signum);
3509 sigdelset (&sigfd_set, w->signum);
3510
3511 signalfd (sigfd, &sigfd_set, 0);
3512 sigprocmask (SIG_UNBLOCK, &ss, 0);
3513 }
3514 else
3515#endif
2591 signal (w->signum, SIG_DFL); 3516 signal (w->signum, SIG_DFL);
3517 }
2592 3518
2593 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2594} 3520}
3521
3522#endif
3523
3524#if EV_CHILD_ENABLE
2595 3525
2596void 3526void
2597ev_child_start (EV_P_ ev_child *w) 3527ev_child_start (EV_P_ ev_child *w)
2598{ 3528{
2599#if EV_MULTIPLICITY 3529#if EV_MULTIPLICITY
… …
2603 return; 3533 return;
2604 3534
2605 EV_FREQUENT_CHECK; 3535 EV_FREQUENT_CHECK;
2606 3536
2607 ev_start (EV_A_ (W)w, 1); 3537 ev_start (EV_A_ (W)w, 1);
2608 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3538 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2609 3539
2610 EV_FREQUENT_CHECK; 3540 EV_FREQUENT_CHECK;
2611} 3541}
2612 3542
2613void 3543void
… …
2617 if (expect_false (!ev_is_active (w))) 3547 if (expect_false (!ev_is_active (w)))
2618 return; 3548 return;
2619 3549
2620 EV_FREQUENT_CHECK; 3550 EV_FREQUENT_CHECK;
2621 3551
2622 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3552 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2623 ev_stop (EV_A_ (W)w); 3553 ev_stop (EV_A_ (W)w);
2624 3554
2625 EV_FREQUENT_CHECK; 3555 EV_FREQUENT_CHECK;
2626} 3556}
3557
3558#endif
2627 3559
2628#if EV_STAT_ENABLE 3560#if EV_STAT_ENABLE
2629 3561
2630# ifdef _WIN32 3562# ifdef _WIN32
2631# undef lstat 3563# undef lstat
… …
2637#define MIN_STAT_INTERVAL 0.1074891 3569#define MIN_STAT_INTERVAL 0.1074891
2638 3570
2639static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2640 3572
2641#if EV_USE_INOTIFY 3573#if EV_USE_INOTIFY
2642# define EV_INOTIFY_BUFSIZE 8192 3574
3575/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3576# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2643 3577
2644static void noinline 3578static void noinline
2645infy_add (EV_P_ ev_stat *w) 3579infy_add (EV_P_ ev_stat *w)
2646{ 3580{
2647 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); 3581 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);
2648 3582
2649 if (w->wd < 0) 3583 if (w->wd >= 0)
3584 {
3585 struct statfs sfs;
3586
3587 /* now local changes will be tracked by inotify, but remote changes won't */
3588 /* unless the filesystem is known to be local, we therefore still poll */
3589 /* also do poll on <2.6.25, but with normal frequency */
3590
3591 if (!fs_2625)
3592 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3593 else if (!statfs (w->path, &sfs)
3594 && (sfs.f_type == 0x1373 /* devfs */
3595 || sfs.f_type == 0xEF53 /* ext2/3 */
3596 || sfs.f_type == 0x3153464a /* jfs */
3597 || sfs.f_type == 0x52654973 /* reiser3 */
3598 || sfs.f_type == 0x01021994 /* tempfs */
3599 || sfs.f_type == 0x58465342 /* xfs */))
3600 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3601 else
3602 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2650 { 3603 }
3604 else
3605 {
3606 /* can't use inotify, continue to stat */
2651 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3607 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2652 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2653 3608
2654 /* monitor some parent directory for speedup hints */ 3609 /* if path is not there, monitor some parent directory for speedup hints */
2655 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3610 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2656 /* but an efficiency issue only */ 3611 /* but an efficiency issue only */
2657 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3612 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2658 { 3613 {
2659 char path [4096]; 3614 char path [4096];
… …
2669 if (!pend || pend == path) 3624 if (!pend || pend == path)
2670 break; 3625 break;
2671 3626
2672 *pend = 0; 3627 *pend = 0;
2673 w->wd = inotify_add_watch (fs_fd, path, mask); 3628 w->wd = inotify_add_watch (fs_fd, path, mask);
2674 } 3629 }
2675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3630 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2676 } 3631 }
2677 } 3632 }
2678 3633
2679 if (w->wd >= 0) 3634 if (w->wd >= 0)
2680 {
2681 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3635 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 3636
2683 /* now local changes will be tracked by inotify, but remote changes won't */ 3637 /* now re-arm timer, if required */
2684 /* unless the filesystem it known to be local, we therefore still poll */ 3638 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2685 /* also do poll on <2.6.25, but with normal frequency */
2686 struct statfs sfs;
2687
2688 if (fs_2625 && !statfs (w->path, &sfs))
2689 if (sfs.f_type == 0x1373 /* devfs */
2690 || sfs.f_type == 0xEF53 /* ext2/3 */
2691 || sfs.f_type == 0x3153464a /* jfs */
2692 || sfs.f_type == 0x52654973 /* reiser3 */
2693 || sfs.f_type == 0x01021994 /* tempfs */
2694 || sfs.f_type == 0x58465342 /* xfs */)
2695 return;
2696
2697 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2698 ev_timer_again (EV_A_ &w->timer); 3639 ev_timer_again (EV_A_ &w->timer);
2699 } 3640 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2700} 3641}
2701 3642
2702static void noinline 3643static void noinline
2703infy_del (EV_P_ ev_stat *w) 3644infy_del (EV_P_ ev_stat *w)
2704{ 3645{
… …
2707 3648
2708 if (wd < 0) 3649 if (wd < 0)
2709 return; 3650 return;
2710 3651
2711 w->wd = -2; 3652 w->wd = -2;
2712 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3653 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2713 wlist_del (&fs_hash [slot].head, (WL)w); 3654 wlist_del (&fs_hash [slot].head, (WL)w);
2714 3655
2715 /* remove this watcher, if others are watching it, they will rearm */ 3656 /* remove this watcher, if others are watching it, they will rearm */
2716 inotify_rm_watch (fs_fd, wd); 3657 inotify_rm_watch (fs_fd, wd);
2717} 3658}
… …
2719static void noinline 3660static void noinline
2720infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3661infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2721{ 3662{
2722 if (slot < 0) 3663 if (slot < 0)
2723 /* overflow, need to check for all hash slots */ 3664 /* overflow, need to check for all hash slots */
2724 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3665 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2725 infy_wd (EV_A_ slot, wd, ev); 3666 infy_wd (EV_A_ slot, wd, ev);
2726 else 3667 else
2727 { 3668 {
2728 WL w_; 3669 WL w_;
2729 3670
2730 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3671 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2731 { 3672 {
2732 ev_stat *w = (ev_stat *)w_; 3673 ev_stat *w = (ev_stat *)w_;
2733 w_ = w_->next; /* lets us remove this watcher and all before it */ 3674 w_ = w_->next; /* lets us remove this watcher and all before it */
2734 3675
2735 if (w->wd == wd || wd == -1) 3676 if (w->wd == wd || wd == -1)
2736 { 3677 {
2737 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3678 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2738 { 3679 {
2739 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3680 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2740 w->wd = -1; 3681 w->wd = -1;
2741 infy_add (EV_A_ w); /* re-add, no matter what */ 3682 infy_add (EV_A_ w); /* re-add, no matter what */
2742 } 3683 }
2743 3684
2744 stat_timer_cb (EV_A_ &w->timer, 0); 3685 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2749 3690
2750static void 3691static void
2751infy_cb (EV_P_ ev_io *w, int revents) 3692infy_cb (EV_P_ ev_io *w, int revents)
2752{ 3693{
2753 char buf [EV_INOTIFY_BUFSIZE]; 3694 char buf [EV_INOTIFY_BUFSIZE];
2754 struct inotify_event *ev = (struct inotify_event *)buf;
2755 int ofs; 3695 int ofs;
2756 int len = read (fs_fd, buf, sizeof (buf)); 3696 int len = read (fs_fd, buf, sizeof (buf));
2757 3697
2758 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3698 for (ofs = 0; ofs < len; )
3699 {
3700 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2759 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3701 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3702 ofs += sizeof (struct inotify_event) + ev->len;
3703 }
2760} 3704}
2761 3705
2762inline_size void 3706inline_size void ecb_cold
2763check_2625 (EV_P) 3707ev_check_2625 (EV_P)
2764{ 3708{
2765 /* kernels < 2.6.25 are borked 3709 /* kernels < 2.6.25 are borked
2766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3710 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2767 */ 3711 */
2768 struct utsname buf; 3712 if (ev_linux_version () < 0x020619)
2769 int major, minor, micro;
2770
2771 if (uname (&buf))
2772 return; 3713 return;
2773 3714
2774 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2775 return;
2776
2777 if (major < 2
2778 || (major == 2 && minor < 6)
2779 || (major == 2 && minor == 6 && micro < 25))
2780 return;
2781
2782 fs_2625 = 1; 3715 fs_2625 = 1;
3716}
3717
3718inline_size int
3719infy_newfd (void)
3720{
3721#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3722 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3723 if (fd >= 0)
3724 return fd;
3725#endif
3726 return inotify_init ();
2783} 3727}
2784 3728
2785inline_size void 3729inline_size void
2786infy_init (EV_P) 3730infy_init (EV_P)
2787{ 3731{
2788 if (fs_fd != -2) 3732 if (fs_fd != -2)
2789 return; 3733 return;
2790 3734
2791 fs_fd = -1; 3735 fs_fd = -1;
2792 3736
2793 check_2625 (EV_A); 3737 ev_check_2625 (EV_A);
2794 3738
2795 fs_fd = inotify_init (); 3739 fs_fd = infy_newfd ();
2796 3740
2797 if (fs_fd >= 0) 3741 if (fs_fd >= 0)
2798 { 3742 {
3743 fd_intern (fs_fd);
2799 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3744 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800 ev_set_priority (&fs_w, EV_MAXPRI); 3745 ev_set_priority (&fs_w, EV_MAXPRI);
2801 ev_io_start (EV_A_ &fs_w); 3746 ev_io_start (EV_A_ &fs_w);
3747 ev_unref (EV_A);
2802 } 3748 }
2803} 3749}
2804 3750
2805inline_size void 3751inline_size void
2806infy_fork (EV_P) 3752infy_fork (EV_P)
… …
2808 int slot; 3754 int slot;
2809 3755
2810 if (fs_fd < 0) 3756 if (fs_fd < 0)
2811 return; 3757 return;
2812 3758
3759 ev_ref (EV_A);
3760 ev_io_stop (EV_A_ &fs_w);
2813 close (fs_fd); 3761 close (fs_fd);
2814 fs_fd = inotify_init (); 3762 fs_fd = infy_newfd ();
2815 3763
3764 if (fs_fd >= 0)
3765 {
3766 fd_intern (fs_fd);
3767 ev_io_set (&fs_w, fs_fd, EV_READ);
3768 ev_io_start (EV_A_ &fs_w);
3769 ev_unref (EV_A);
3770 }
3771
2816 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3772 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2817 { 3773 {
2818 WL w_ = fs_hash [slot].head; 3774 WL w_ = fs_hash [slot].head;
2819 fs_hash [slot].head = 0; 3775 fs_hash [slot].head = 0;
2820 3776
2821 while (w_) 3777 while (w_)
… …
2826 w->wd = -1; 3782 w->wd = -1;
2827 3783
2828 if (fs_fd >= 0) 3784 if (fs_fd >= 0)
2829 infy_add (EV_A_ w); /* re-add, no matter what */ 3785 infy_add (EV_A_ w); /* re-add, no matter what */
2830 else 3786 else
3787 {
3788 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3789 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2831 ev_timer_again (EV_A_ &w->timer); 3790 ev_timer_again (EV_A_ &w->timer);
3791 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3792 }
2832 } 3793 }
2833 } 3794 }
2834} 3795}
2835 3796
2836#endif 3797#endif
… …
2853static void noinline 3814static void noinline
2854stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3815stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2855{ 3816{
2856 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3817 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2857 3818
2858 /* we copy this here each the time so that */ 3819 ev_statdata prev = w->attr;
2859 /* prev has the old value when the callback gets invoked */
2860 w->prev = w->attr;
2861 ev_stat_stat (EV_A_ w); 3820 ev_stat_stat (EV_A_ w);
2862 3821
2863 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3822 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2864 if ( 3823 if (
2865 w->prev.st_dev != w->attr.st_dev 3824 prev.st_dev != w->attr.st_dev
2866 || w->prev.st_ino != w->attr.st_ino 3825 || prev.st_ino != w->attr.st_ino
2867 || w->prev.st_mode != w->attr.st_mode 3826 || prev.st_mode != w->attr.st_mode
2868 || w->prev.st_nlink != w->attr.st_nlink 3827 || prev.st_nlink != w->attr.st_nlink
2869 || w->prev.st_uid != w->attr.st_uid 3828 || prev.st_uid != w->attr.st_uid
2870 || w->prev.st_gid != w->attr.st_gid 3829 || prev.st_gid != w->attr.st_gid
2871 || w->prev.st_rdev != w->attr.st_rdev 3830 || prev.st_rdev != w->attr.st_rdev
2872 || w->prev.st_size != w->attr.st_size 3831 || prev.st_size != w->attr.st_size
2873 || w->prev.st_atime != w->attr.st_atime 3832 || prev.st_atime != w->attr.st_atime
2874 || w->prev.st_mtime != w->attr.st_mtime 3833 || prev.st_mtime != w->attr.st_mtime
2875 || w->prev.st_ctime != w->attr.st_ctime 3834 || prev.st_ctime != w->attr.st_ctime
2876 ) { 3835 ) {
3836 /* we only update w->prev on actual differences */
3837 /* in case we test more often than invoke the callback, */
3838 /* to ensure that prev is always different to attr */
3839 w->prev = prev;
3840
2877 #if EV_USE_INOTIFY 3841 #if EV_USE_INOTIFY
2878 if (fs_fd >= 0) 3842 if (fs_fd >= 0)
2879 { 3843 {
2880 infy_del (EV_A_ w); 3844 infy_del (EV_A_ w);
2881 infy_add (EV_A_ w); 3845 infy_add (EV_A_ w);
… …
2906 3870
2907 if (fs_fd >= 0) 3871 if (fs_fd >= 0)
2908 infy_add (EV_A_ w); 3872 infy_add (EV_A_ w);
2909 else 3873 else
2910#endif 3874#endif
3875 {
2911 ev_timer_again (EV_A_ &w->timer); 3876 ev_timer_again (EV_A_ &w->timer);
3877 ev_unref (EV_A);
3878 }
2912 3879
2913 ev_start (EV_A_ (W)w, 1); 3880 ev_start (EV_A_ (W)w, 1);
2914 3881
2915 EV_FREQUENT_CHECK; 3882 EV_FREQUENT_CHECK;
2916} 3883}
… …
2925 EV_FREQUENT_CHECK; 3892 EV_FREQUENT_CHECK;
2926 3893
2927#if EV_USE_INOTIFY 3894#if EV_USE_INOTIFY
2928 infy_del (EV_A_ w); 3895 infy_del (EV_A_ w);
2929#endif 3896#endif
3897
3898 if (ev_is_active (&w->timer))
3899 {
3900 ev_ref (EV_A);
2930 ev_timer_stop (EV_A_ &w->timer); 3901 ev_timer_stop (EV_A_ &w->timer);
3902 }
2931 3903
2932 ev_stop (EV_A_ (W)w); 3904 ev_stop (EV_A_ (W)w);
2933 3905
2934 EV_FREQUENT_CHECK; 3906 EV_FREQUENT_CHECK;
2935} 3907}
… …
2980 3952
2981 EV_FREQUENT_CHECK; 3953 EV_FREQUENT_CHECK;
2982} 3954}
2983#endif 3955#endif
2984 3956
3957#if EV_PREPARE_ENABLE
2985void 3958void
2986ev_prepare_start (EV_P_ ev_prepare *w) 3959ev_prepare_start (EV_P_ ev_prepare *w)
2987{ 3960{
2988 if (expect_false (ev_is_active (w))) 3961 if (expect_false (ev_is_active (w)))
2989 return; 3962 return;
… …
3015 3988
3016 ev_stop (EV_A_ (W)w); 3989 ev_stop (EV_A_ (W)w);
3017 3990
3018 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
3019} 3992}
3993#endif
3020 3994
3995#if EV_CHECK_ENABLE
3021void 3996void
3022ev_check_start (EV_P_ ev_check *w) 3997ev_check_start (EV_P_ ev_check *w)
3023{ 3998{
3024 if (expect_false (ev_is_active (w))) 3999 if (expect_false (ev_is_active (w)))
3025 return; 4000 return;
… …
3051 4026
3052 ev_stop (EV_A_ (W)w); 4027 ev_stop (EV_A_ (W)w);
3053 4028
3054 EV_FREQUENT_CHECK; 4029 EV_FREQUENT_CHECK;
3055} 4030}
4031#endif
3056 4032
3057#if EV_EMBED_ENABLE 4033#if EV_EMBED_ENABLE
3058void noinline 4034void noinline
3059ev_embed_sweep (EV_P_ ev_embed *w) 4035ev_embed_sweep (EV_P_ ev_embed *w)
3060{ 4036{
3061 ev_loop (w->other, EVLOOP_NONBLOCK); 4037 ev_run (w->other, EVRUN_NOWAIT);
3062} 4038}
3063 4039
3064static void 4040static void
3065embed_io_cb (EV_P_ ev_io *io, int revents) 4041embed_io_cb (EV_P_ ev_io *io, int revents)
3066{ 4042{
3067 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4043 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3068 4044
3069 if (ev_cb (w)) 4045 if (ev_cb (w))
3070 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4046 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3071 else 4047 else
3072 ev_loop (w->other, EVLOOP_NONBLOCK); 4048 ev_run (w->other, EVRUN_NOWAIT);
3073} 4049}
3074 4050
3075static void 4051static void
3076embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4052embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077{ 4053{
3078 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4054 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3079 4055
3080 { 4056 {
3081 struct ev_loop *loop = w->other; 4057 EV_P = w->other;
3082 4058
3083 while (fdchangecnt) 4059 while (fdchangecnt)
3084 { 4060 {
3085 fd_reify (EV_A); 4061 fd_reify (EV_A);
3086 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4062 ev_run (EV_A_ EVRUN_NOWAIT);
3087 } 4063 }
3088 } 4064 }
3089} 4065}
3090 4066
3091static void 4067static void
… …
3094 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4070 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3095 4071
3096 ev_embed_stop (EV_A_ w); 4072 ev_embed_stop (EV_A_ w);
3097 4073
3098 { 4074 {
3099 struct ev_loop *loop = w->other; 4075 EV_P = w->other;
3100 4076
3101 ev_loop_fork (EV_A); 4077 ev_loop_fork (EV_A);
3102 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4078 ev_run (EV_A_ EVRUN_NOWAIT);
3103 } 4079 }
3104 4080
3105 ev_embed_start (EV_A_ w); 4081 ev_embed_start (EV_A_ w);
3106} 4082}
3107 4083
… …
3118{ 4094{
3119 if (expect_false (ev_is_active (w))) 4095 if (expect_false (ev_is_active (w)))
3120 return; 4096 return;
3121 4097
3122 { 4098 {
3123 struct ev_loop *loop = w->other; 4099 EV_P = w->other;
3124 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4100 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3125 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4101 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3126 } 4102 }
3127 4103
3128 EV_FREQUENT_CHECK; 4104 EV_FREQUENT_CHECK;
… …
3155 4131
3156 ev_io_stop (EV_A_ &w->io); 4132 ev_io_stop (EV_A_ &w->io);
3157 ev_prepare_stop (EV_A_ &w->prepare); 4133 ev_prepare_stop (EV_A_ &w->prepare);
3158 ev_fork_stop (EV_A_ &w->fork); 4134 ev_fork_stop (EV_A_ &w->fork);
3159 4135
4136 ev_stop (EV_A_ (W)w);
4137
3160 EV_FREQUENT_CHECK; 4138 EV_FREQUENT_CHECK;
3161} 4139}
3162#endif 4140#endif
3163 4141
3164#if EV_FORK_ENABLE 4142#if EV_FORK_ENABLE
… …
3197 4175
3198 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
3199} 4177}
3200#endif 4178#endif
3201 4179
4180#if EV_CLEANUP_ENABLE
4181void
4182ev_cleanup_start (EV_P_ ev_cleanup *w)
4183{
4184 if (expect_false (ev_is_active (w)))
4185 return;
4186
4187 EV_FREQUENT_CHECK;
4188
4189 ev_start (EV_A_ (W)w, ++cleanupcnt);
4190 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4191 cleanups [cleanupcnt - 1] = w;
4192
4193 /* cleanup watchers should never keep a refcount on the loop */
4194 ev_unref (EV_A);
4195 EV_FREQUENT_CHECK;
4196}
4197
4198void
4199ev_cleanup_stop (EV_P_ ev_cleanup *w)
4200{
4201 clear_pending (EV_A_ (W)w);
4202 if (expect_false (!ev_is_active (w)))
4203 return;
4204
4205 EV_FREQUENT_CHECK;
4206 ev_ref (EV_A);
4207
4208 {
4209 int active = ev_active (w);
4210
4211 cleanups [active - 1] = cleanups [--cleanupcnt];
4212 ev_active (cleanups [active - 1]) = active;
4213 }
4214
4215 ev_stop (EV_A_ (W)w);
4216
4217 EV_FREQUENT_CHECK;
4218}
4219#endif
4220
3202#if EV_ASYNC_ENABLE 4221#if EV_ASYNC_ENABLE
3203void 4222void
3204ev_async_start (EV_P_ ev_async *w) 4223ev_async_start (EV_P_ ev_async *w)
3205{ 4224{
3206 if (expect_false (ev_is_active (w))) 4225 if (expect_false (ev_is_active (w)))
3207 return; 4226 return;
3208 4227
4228 w->sent = 0;
4229
3209 evpipe_init (EV_A); 4230 evpipe_init (EV_A);
3210 4231
3211 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3212 4233
3213 ev_start (EV_A_ (W)w, ++asynccnt); 4234 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3240 4261
3241void 4262void
3242ev_async_send (EV_P_ ev_async *w) 4263ev_async_send (EV_P_ ev_async *w)
3243{ 4264{
3244 w->sent = 1; 4265 w->sent = 1;
3245 evpipe_write (EV_A_ &gotasync); 4266 evpipe_write (EV_A_ &async_pending);
3246} 4267}
3247#endif 4268#endif
3248 4269
3249/*****************************************************************************/ 4270/*****************************************************************************/
3250 4271
… …
3290{ 4311{
3291 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4312 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3292 4313
3293 if (expect_false (!once)) 4314 if (expect_false (!once))
3294 { 4315 {
3295 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4316 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3296 return; 4317 return;
3297 } 4318 }
3298 4319
3299 once->cb = cb; 4320 once->cb = cb;
3300 once->arg = arg; 4321 once->arg = arg;
… …
3315} 4336}
3316 4337
3317/*****************************************************************************/ 4338/*****************************************************************************/
3318 4339
3319#if EV_WALK_ENABLE 4340#if EV_WALK_ENABLE
3320void 4341void ecb_cold
3321ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4342ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3322{ 4343{
3323 int i, j; 4344 int i, j;
3324 ev_watcher_list *wl, *wn; 4345 ev_watcher_list *wl, *wn;
3325 4346
… …
3369 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4390 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3370#endif 4391#endif
3371 4392
3372#if EV_IDLE_ENABLE 4393#if EV_IDLE_ENABLE
3373 if (types & EV_IDLE) 4394 if (types & EV_IDLE)
3374 for (j = NUMPRI; i--; ) 4395 for (j = NUMPRI; j--; )
3375 for (i = idlecnt [j]; i--; ) 4396 for (i = idlecnt [j]; i--; )
3376 cb (EV_A_ EV_IDLE, idles [j][i]); 4397 cb (EV_A_ EV_IDLE, idles [j][i]);
3377#endif 4398#endif
3378 4399
3379#if EV_FORK_ENABLE 4400#if EV_FORK_ENABLE
… …
3387 if (types & EV_ASYNC) 4408 if (types & EV_ASYNC)
3388 for (i = asynccnt; i--; ) 4409 for (i = asynccnt; i--; )
3389 cb (EV_A_ EV_ASYNC, asyncs [i]); 4410 cb (EV_A_ EV_ASYNC, asyncs [i]);
3390#endif 4411#endif
3391 4412
4413#if EV_PREPARE_ENABLE
3392 if (types & EV_PREPARE) 4414 if (types & EV_PREPARE)
3393 for (i = preparecnt; i--; ) 4415 for (i = preparecnt; i--; )
3394#if EV_EMBED_ENABLE 4416# if EV_EMBED_ENABLE
3395 if (ev_cb (prepares [i]) != embed_prepare_cb) 4417 if (ev_cb (prepares [i]) != embed_prepare_cb)
3396#endif 4418# endif
3397 cb (EV_A_ EV_PREPARE, prepares [i]); 4419 cb (EV_A_ EV_PREPARE, prepares [i]);
4420#endif
3398 4421
4422#if EV_CHECK_ENABLE
3399 if (types & EV_CHECK) 4423 if (types & EV_CHECK)
3400 for (i = checkcnt; i--; ) 4424 for (i = checkcnt; i--; )
3401 cb (EV_A_ EV_CHECK, checks [i]); 4425 cb (EV_A_ EV_CHECK, checks [i]);
4426#endif
3402 4427
4428#if EV_SIGNAL_ENABLE
3403 if (types & EV_SIGNAL) 4429 if (types & EV_SIGNAL)
3404 for (i = 0; i < signalmax; ++i) 4430 for (i = 0; i < EV_NSIG - 1; ++i)
3405 for (wl = signals [i].head; wl; ) 4431 for (wl = signals [i].head; wl; )
3406 { 4432 {
3407 wn = wl->next; 4433 wn = wl->next;
3408 cb (EV_A_ EV_SIGNAL, wl); 4434 cb (EV_A_ EV_SIGNAL, wl);
3409 wl = wn; 4435 wl = wn;
3410 } 4436 }
4437#endif
3411 4438
4439#if EV_CHILD_ENABLE
3412 if (types & EV_CHILD) 4440 if (types & EV_CHILD)
3413 for (i = EV_PID_HASHSIZE; i--; ) 4441 for (i = (EV_PID_HASHSIZE); i--; )
3414 for (wl = childs [i]; wl; ) 4442 for (wl = childs [i]; wl; )
3415 { 4443 {
3416 wn = wl->next; 4444 wn = wl->next;
3417 cb (EV_A_ EV_CHILD, wl); 4445 cb (EV_A_ EV_CHILD, wl);
3418 wl = wn; 4446 wl = wn;
3419 } 4447 }
4448#endif
3420/* EV_STAT 0x00001000 /* stat data changed */ 4449/* EV_STAT 0x00001000 /* stat data changed */
3421/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4450/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3422} 4451}
3423#endif 4452#endif
3424 4453
3425#if EV_MULTIPLICITY 4454#if EV_MULTIPLICITY
3426 #include "ev_wrap.h" 4455 #include "ev_wrap.h"
3427#endif 4456#endif
3428 4457
3429#ifdef __cplusplus
3430}
3431#endif
3432

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