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Comparing libev/ev.c (file contents):
Revision 1.300 by root, Tue Jul 14 20:31:21 2009 UTC vs.
Revision 1.408 by root, Fri Jan 27 22:28:49 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_CC >= 0x5110
545 #if __i386 || __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 || __amd64__ || __x86_64 || __x86_64__
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 __sparc || __sparc__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
565 #elif defined(__s390__) || defined(__s390x__)
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
567 #endif
568 #endif
569#endif
570
571#ifndef ECB_MEMORY_FENCE
572 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
573 #define ECB_MEMORY_FENCE __sync_synchronize ()
574 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
575 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
576 #elif _MSC_VER >= 1400 /* VC++ 2005 */
577 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
578 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
579 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
580 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
581 #elif defined(_WIN32)
582 #include <WinNT.h>
583 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
584 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
585 #include <mbarrier.h>
586 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
587 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
588 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
589 #endif
590#endif
591
592#ifndef ECB_MEMORY_FENCE
593 #if !ECB_AVOID_PTHREADS
594 /*
595 * if you get undefined symbol references to pthread_mutex_lock,
596 * or failure to find pthread.h, then you should implement
597 * the ECB_MEMORY_FENCE operations for your cpu/compiler
598 * OR provide pthread.h and link against the posix thread library
599 * of your system.
600 */
601 #include <pthread.h>
602 #define ECB_NEEDS_PTHREADS 1
603 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
604
605 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
606 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
607 #endif
608#endif
609
610#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
611 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
612#endif
613
614#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
615 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
616#endif
617
618/*****************************************************************************/
619
620#define ECB_C99 (__STDC_VERSION__ >= 199901L)
621
622#if __cplusplus
623 #define ecb_inline static inline
624#elif ECB_GCC_VERSION(2,5)
625 #define ecb_inline static __inline__
626#elif ECB_C99
627 #define ecb_inline static inline
628#else
629 #define ecb_inline static
630#endif
631
632#if ECB_GCC_VERSION(3,3)
633 #define ecb_restrict __restrict__
634#elif ECB_C99
635 #define ecb_restrict restrict
636#else
637 #define ecb_restrict
638#endif
639
640typedef int ecb_bool;
641
642#define ECB_CONCAT_(a, b) a ## b
643#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
644#define ECB_STRINGIFY_(a) # a
645#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
646
647#define ecb_function_ ecb_inline
648
649#if ECB_GCC_VERSION(3,1)
650 #define ecb_attribute(attrlist) __attribute__(attrlist)
651 #define ecb_is_constant(expr) __builtin_constant_p (expr)
652 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
653 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
654#else
655 #define ecb_attribute(attrlist)
656 #define ecb_is_constant(expr) 0
657 #define ecb_expect(expr,value) (expr)
658 #define ecb_prefetch(addr,rw,locality)
659#endif
660
661/* no emulation for ecb_decltype */
662#if ECB_GCC_VERSION(4,5)
663 #define ecb_decltype(x) __decltype(x)
664#elif ECB_GCC_VERSION(3,0)
665 #define ecb_decltype(x) __typeof(x)
666#endif
667
668#define ecb_noinline ecb_attribute ((__noinline__))
669#define ecb_noreturn ecb_attribute ((__noreturn__))
670#define ecb_unused ecb_attribute ((__unused__))
671#define ecb_const ecb_attribute ((__const__))
672#define ecb_pure ecb_attribute ((__pure__))
673
674#if ECB_GCC_VERSION(4,3)
675 #define ecb_artificial ecb_attribute ((__artificial__))
676 #define ecb_hot ecb_attribute ((__hot__))
677 #define ecb_cold ecb_attribute ((__cold__))
678#else
679 #define ecb_artificial
680 #define ecb_hot
681 #define ecb_cold
682#endif
683
684/* put around conditional expressions if you are very sure that the */
685/* expression is mostly true or mostly false. note that these return */
686/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 687#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 688#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
689/* for compatibility to the rest of the world */
690#define ecb_likely(expr) ecb_expect_true (expr)
691#define ecb_unlikely(expr) ecb_expect_false (expr)
692
693/* count trailing zero bits and count # of one bits */
694#if ECB_GCC_VERSION(3,4)
695 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
696 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
697 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
698 #define ecb_ctz32(x) __builtin_ctz (x)
699 #define ecb_ctz64(x) __builtin_ctzll (x)
700 #define ecb_popcount32(x) __builtin_popcount (x)
701 /* no popcountll */
702#else
703 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
704 ecb_function_ int
705 ecb_ctz32 (uint32_t x)
706 {
707 int r = 0;
708
709 x &= ~x + 1; /* this isolates the lowest bit */
710
711#if ECB_branchless_on_i386
712 r += !!(x & 0xaaaaaaaa) << 0;
713 r += !!(x & 0xcccccccc) << 1;
714 r += !!(x & 0xf0f0f0f0) << 2;
715 r += !!(x & 0xff00ff00) << 3;
716 r += !!(x & 0xffff0000) << 4;
717#else
718 if (x & 0xaaaaaaaa) r += 1;
719 if (x & 0xcccccccc) r += 2;
720 if (x & 0xf0f0f0f0) r += 4;
721 if (x & 0xff00ff00) r += 8;
722 if (x & 0xffff0000) r += 16;
723#endif
724
725 return r;
726 }
727
728 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
729 ecb_function_ int
730 ecb_ctz64 (uint64_t x)
731 {
732 int shift = x & 0xffffffffU ? 0 : 32;
733 return ecb_ctz32 (x >> shift) + shift;
734 }
735
736 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
737 ecb_function_ int
738 ecb_popcount32 (uint32_t x)
739 {
740 x -= (x >> 1) & 0x55555555;
741 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
742 x = ((x >> 4) + x) & 0x0f0f0f0f;
743 x *= 0x01010101;
744
745 return x >> 24;
746 }
747
748 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
749 ecb_function_ int ecb_ld32 (uint32_t x)
750 {
751 int r = 0;
752
753 if (x >> 16) { x >>= 16; r += 16; }
754 if (x >> 8) { x >>= 8; r += 8; }
755 if (x >> 4) { x >>= 4; r += 4; }
756 if (x >> 2) { x >>= 2; r += 2; }
757 if (x >> 1) { r += 1; }
758
759 return r;
760 }
761
762 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
763 ecb_function_ int ecb_ld64 (uint64_t x)
764 {
765 int r = 0;
766
767 if (x >> 32) { x >>= 32; r += 32; }
768
769 return r + ecb_ld32 (x);
770 }
771#endif
772
773ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
774ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
775{
776 return ( (x * 0x0802U & 0x22110U)
777 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
778}
779
780ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
781ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
782{
783 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
784 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
785 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
786 x = ( x >> 8 ) | ( x << 8);
787
788 return x;
789}
790
791ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
792ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
793{
794 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
795 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
796 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
797 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
798 x = ( x >> 16 ) | ( x << 16);
799
800 return x;
801}
802
803/* popcount64 is only available on 64 bit cpus as gcc builtin */
804/* so for this version we are lazy */
805ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
806ecb_function_ int
807ecb_popcount64 (uint64_t x)
808{
809 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
810}
811
812ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
813ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
814ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
815ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
816ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
817ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
818ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
819ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
820
821ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
822ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
823ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
824ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
825ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
826ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
827ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
828ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
829
830#if ECB_GCC_VERSION(4,3)
831 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
832 #define ecb_bswap32(x) __builtin_bswap32 (x)
833 #define ecb_bswap64(x) __builtin_bswap64 (x)
834#else
835 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
836 ecb_function_ uint16_t
837 ecb_bswap16 (uint16_t x)
838 {
839 return ecb_rotl16 (x, 8);
840 }
841
842 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
843 ecb_function_ uint32_t
844 ecb_bswap32 (uint32_t x)
845 {
846 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
847 }
848
849 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
850 ecb_function_ uint64_t
851 ecb_bswap64 (uint64_t x)
852 {
853 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
854 }
855#endif
856
857#if ECB_GCC_VERSION(4,5)
858 #define ecb_unreachable() __builtin_unreachable ()
859#else
860 /* this seems to work fine, but gcc always emits a warning for it :/ */
861 ecb_inline void ecb_unreachable (void) ecb_noreturn;
862 ecb_inline void ecb_unreachable (void) { }
863#endif
864
865/* try to tell the compiler that some condition is definitely true */
866#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
867
868ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
869ecb_inline unsigned char
870ecb_byteorder_helper (void)
871{
872 const uint32_t u = 0x11223344;
873 return *(unsigned char *)&u;
874}
875
876ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
877ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
878ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
879ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
880
881#if ECB_GCC_VERSION(3,0) || ECB_C99
882 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
883#else
884 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
885#endif
886
887#if __cplusplus
888 template<typename T>
889 static inline T ecb_div_rd (T val, T div)
890 {
891 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
892 }
893 template<typename T>
894 static inline T ecb_div_ru (T val, T div)
895 {
896 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
897 }
898#else
899 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
900 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
901#endif
902
903#if ecb_cplusplus_does_not_suck
904 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
905 template<typename T, int N>
906 static inline int ecb_array_length (const T (&arr)[N])
907 {
908 return N;
909 }
910#else
911 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
912#endif
913
914#endif
915
916/* ECB.H END */
917
918#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
919/* if your architecture doesn't need memory fences, e.g. because it is
920 * single-cpu/core, or if you use libev in a project that doesn't use libev
921 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
922 * libev, in which cases the memory fences become nops.
923 * alternatively, you can remove this #error and link against libpthread,
924 * which will then provide the memory fences.
925 */
926# error "memory fences not defined for your architecture, please report"
927#endif
928
929#ifndef ECB_MEMORY_FENCE
930# define ECB_MEMORY_FENCE do { } while (0)
931# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
932# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
933#endif
934
935#define expect_false(cond) ecb_expect_false (cond)
936#define expect_true(cond) ecb_expect_true (cond)
937#define noinline ecb_noinline
938
388#define inline_size static inline 939#define inline_size ecb_inline
389 940
390#if EV_MINIMAL 941#if EV_FEATURE_CODE
942# define inline_speed ecb_inline
943#else
391# define inline_speed static noinline 944# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 945#endif
395 946
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 947#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 948
398#if EV_MINPRI == EV_MAXPRI 949#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 962#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 963#define ev_at(w) ((WT)(w))->at
413 964
414#if EV_USE_REALTIME 965#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 966/* 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 */ 967/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 968static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 969#endif
419 970
420#if EV_USE_MONOTONIC 971#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 972static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 973#endif
423 974
975#ifndef EV_FD_TO_WIN32_HANDLE
976# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
977#endif
978#ifndef EV_WIN32_HANDLE_TO_FD
979# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
980#endif
981#ifndef EV_WIN32_CLOSE_FD
982# define EV_WIN32_CLOSE_FD(fd) close (fd)
983#endif
984
424#ifdef _WIN32 985#ifdef _WIN32
425# include "ev_win32.c" 986# include "ev_win32.c"
426#endif 987#endif
427 988
428/*****************************************************************************/ 989/*****************************************************************************/
429 990
991/* define a suitable floor function (only used by periodics atm) */
992
993#if EV_USE_FLOOR
994# include <math.h>
995# define ev_floor(v) floor (v)
996#else
997
998#include <float.h>
999
1000/* a floor() replacement function, should be independent of ev_tstamp type */
1001static ev_tstamp noinline
1002ev_floor (ev_tstamp v)
1003{
1004 /* the choice of shift factor is not terribly important */
1005#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1007#else
1008 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1009#endif
1010
1011 /* argument too large for an unsigned long? */
1012 if (expect_false (v >= shift))
1013 {
1014 ev_tstamp f;
1015
1016 if (v == v - 1.)
1017 return v; /* very large number */
1018
1019 f = shift * ev_floor (v * (1. / shift));
1020 return f + ev_floor (v - f);
1021 }
1022
1023 /* special treatment for negative args? */
1024 if (expect_false (v < 0.))
1025 {
1026 ev_tstamp f = -ev_floor (-v);
1027
1028 return f - (f == v ? 0 : 1);
1029 }
1030
1031 /* fits into an unsigned long */
1032 return (unsigned long)v;
1033}
1034
1035#endif
1036
1037/*****************************************************************************/
1038
1039#ifdef __linux
1040# include <sys/utsname.h>
1041#endif
1042
1043static unsigned int noinline ecb_cold
1044ev_linux_version (void)
1045{
1046#ifdef __linux
1047 unsigned int v = 0;
1048 struct utsname buf;
1049 int i;
1050 char *p = buf.release;
1051
1052 if (uname (&buf))
1053 return 0;
1054
1055 for (i = 3+1; --i; )
1056 {
1057 unsigned int c = 0;
1058
1059 for (;;)
1060 {
1061 if (*p >= '0' && *p <= '9')
1062 c = c * 10 + *p++ - '0';
1063 else
1064 {
1065 p += *p == '.';
1066 break;
1067 }
1068 }
1069
1070 v = (v << 8) | c;
1071 }
1072
1073 return v;
1074#else
1075 return 0;
1076#endif
1077}
1078
1079/*****************************************************************************/
1080
1081#if EV_AVOID_STDIO
1082static void noinline ecb_cold
1083ev_printerr (const char *msg)
1084{
1085 write (STDERR_FILENO, msg, strlen (msg));
1086}
1087#endif
1088
430static void (*syserr_cb)(const char *msg); 1089static void (*syserr_cb)(const char *msg);
431 1090
432void 1091void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1092ev_set_syserr_cb (void (*cb)(const char *msg))
434{ 1093{
435 syserr_cb = cb; 1094 syserr_cb = cb;
436} 1095}
437 1096
438static void noinline 1097static void noinline ecb_cold
439ev_syserr (const char *msg) 1098ev_syserr (const char *msg)
440{ 1099{
441 if (!msg) 1100 if (!msg)
442 msg = "(libev) system error"; 1101 msg = "(libev) system error";
443 1102
444 if (syserr_cb) 1103 if (syserr_cb)
445 syserr_cb (msg); 1104 syserr_cb (msg);
446 else 1105 else
447 { 1106 {
1107#if EV_AVOID_STDIO
1108 ev_printerr (msg);
1109 ev_printerr (": ");
1110 ev_printerr (strerror (errno));
1111 ev_printerr ("\n");
1112#else
448 perror (msg); 1113 perror (msg);
1114#endif
449 abort (); 1115 abort ();
450 } 1116 }
451} 1117}
452 1118
453static void * 1119static void *
454ev_realloc_emul (void *ptr, long size) 1120ev_realloc_emul (void *ptr, long size)
455{ 1121{
1122#if __GLIBC__
1123 return realloc (ptr, size);
1124#else
456 /* some systems, notably openbsd and darwin, fail to properly 1125 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1126 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1127 * the single unix specification, so work around them here.
459 */ 1128 */
460 1129
461 if (size) 1130 if (size)
462 return realloc (ptr, size); 1131 return realloc (ptr, size);
463 1132
464 free (ptr); 1133 free (ptr);
465 return 0; 1134 return 0;
1135#endif
466} 1136}
467 1137
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1138static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
469 1139
470void 1140void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1141ev_set_allocator (void *(*cb)(void *ptr, long size))
472{ 1142{
473 alloc = cb; 1143 alloc = cb;
474} 1144}
475 1145
… …
478{ 1148{
479 ptr = alloc (ptr, size); 1149 ptr = alloc (ptr, size);
480 1150
481 if (!ptr && size) 1151 if (!ptr && size)
482 { 1152 {
1153#if EV_AVOID_STDIO
1154 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1155#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1156 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1157#endif
484 abort (); 1158 abort ();
485 } 1159 }
486 1160
487 return ptr; 1161 return ptr;
488} 1162}
… …
504 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1178 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
505 unsigned char unused; 1179 unsigned char unused;
506#if EV_USE_EPOLL 1180#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1181 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1182#endif
509#if EV_SELECT_IS_WINSOCKET 1183#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1184 SOCKET handle;
1185#endif
1186#if EV_USE_IOCP
1187 OVERLAPPED or, ow;
511#endif 1188#endif
512} ANFD; 1189} ANFD;
513 1190
514/* stores the pending event set for a given watcher */ 1191/* stores the pending event set for a given watcher */
515typedef struct 1192typedef struct
… …
557 #undef VAR 1234 #undef VAR
558 }; 1235 };
559 #include "ev_wrap.h" 1236 #include "ev_wrap.h"
560 1237
561 static struct ev_loop default_loop_struct; 1238 static struct ev_loop default_loop_struct;
562 struct ev_loop *ev_default_loop_ptr; 1239 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
563 1240
564#else 1241#else
565 1242
566 ev_tstamp ev_rt_now; 1243 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
567 #define VAR(name,decl) static decl; 1244 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1245 #include "ev_vars.h"
569 #undef VAR 1246 #undef VAR
570 1247
571 static int ev_default_loop_ptr; 1248 static int ev_default_loop_ptr;
572 1249
573#endif 1250#endif
574 1251
575#if EV_MINIMAL < 2 1252#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1253# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1254# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 1255# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 1256#else
580# define EV_RELEASE_CB (void)0 1257# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 1258# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1259# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 1260#endif
584 1261
585#define EVUNLOOP_RECURSE 0x80 1262#define EVBREAK_RECURSE 0x80
586 1263
587/*****************************************************************************/ 1264/*****************************************************************************/
588 1265
589#ifndef EV_HAVE_EV_TIME 1266#ifndef EV_HAVE_EV_TIME
590ev_tstamp 1267ev_tstamp
… …
634 if (delay > 0.) 1311 if (delay > 0.)
635 { 1312 {
636#if EV_USE_NANOSLEEP 1313#if EV_USE_NANOSLEEP
637 struct timespec ts; 1314 struct timespec ts;
638 1315
639 ts.tv_sec = (time_t)delay; 1316 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 1317 nanosleep (&ts, 0);
643#elif defined(_WIN32) 1318#elif defined(_WIN32)
644 Sleep ((unsigned long)(delay * 1e3)); 1319 Sleep ((unsigned long)(delay * 1e3));
645#else 1320#else
646 struct timeval tv; 1321 struct timeval tv;
647 1322
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650
651 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1323 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1324 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 1325 /* by older ones */
1326 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 1327 select (0, 0, 0, 0, &tv);
655#endif 1328#endif
656 } 1329 }
657} 1330}
658 1331
659/*****************************************************************************/ 1332/*****************************************************************************/
660 1333
661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1334#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
662 1335
663/* find a suitable new size for the given array, */ 1336/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 1337/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 1338inline_size int
666array_nextsize (int elem, int cur, int cnt) 1339array_nextsize (int elem, int cur, int cnt)
667{ 1340{
668 int ncur = cur + 1; 1341 int ncur = cur + 1;
669 1342
670 do 1343 do
671 ncur <<= 1; 1344 ncur <<= 1;
672 while (cnt > ncur); 1345 while (cnt > ncur);
673 1346
674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1347 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1348 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 1349 {
677 ncur *= elem; 1350 ncur *= elem;
678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1351 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
679 ncur = ncur - sizeof (void *) * 4; 1352 ncur = ncur - sizeof (void *) * 4;
… …
681 } 1354 }
682 1355
683 return ncur; 1356 return ncur;
684} 1357}
685 1358
686static noinline void * 1359static void * noinline ecb_cold
687array_realloc (int elem, void *base, int *cur, int cnt) 1360array_realloc (int elem, void *base, int *cur, int cnt)
688{ 1361{
689 *cur = array_nextsize (elem, *cur, cnt); 1362 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 1363 return ev_realloc (base, elem * *cur);
691} 1364}
… …
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1367 memset ((void *)(base), 0, sizeof (*(base)) * (count))
695 1368
696#define array_needsize(type,base,cur,cnt,init) \ 1369#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 1370 if (expect_false ((cnt) > (cur))) \
698 { \ 1371 { \
699 int ocur_ = (cur); \ 1372 int ecb_unused ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 1373 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 1374 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 1375 init ((base) + (ocur_), (cur) - ocur_); \
703 } 1376 }
704 1377
… …
765} 1438}
766 1439
767/*****************************************************************************/ 1440/*****************************************************************************/
768 1441
769inline_speed void 1442inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 1443fd_event_nocheck (EV_P_ int fd, int revents)
771{ 1444{
772 ANFD *anfd = anfds + fd; 1445 ANFD *anfd = anfds + fd;
773 ev_io *w; 1446 ev_io *w;
774 1447
775 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1448 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
787fd_event (EV_P_ int fd, int revents) 1460fd_event (EV_P_ int fd, int revents)
788{ 1461{
789 ANFD *anfd = anfds + fd; 1462 ANFD *anfd = anfds + fd;
790 1463
791 if (expect_true (!anfd->reify)) 1464 if (expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 1465 fd_event_nocheck (EV_A_ fd, revents);
793} 1466}
794 1467
795void 1468void
796ev_feed_fd_event (EV_P_ int fd, int revents) 1469ev_feed_fd_event (EV_P_ int fd, int revents)
797{ 1470{
798 if (fd >= 0 && fd < anfdmax) 1471 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 1472 fd_event_nocheck (EV_A_ fd, revents);
800} 1473}
801 1474
802/* make sure the external fd watch events are in-sync */ 1475/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 1476/* with the kernel/libev internal state */
804inline_size void 1477inline_size void
805fd_reify (EV_P) 1478fd_reify (EV_P)
806{ 1479{
807 int i; 1480 int i;
808 1481
1482#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1483 for (i = 0; i < fdchangecnt; ++i)
1484 {
1485 int fd = fdchanges [i];
1486 ANFD *anfd = anfds + fd;
1487
1488 if (anfd->reify & EV__IOFDSET && anfd->head)
1489 {
1490 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1491
1492 if (handle != anfd->handle)
1493 {
1494 unsigned long arg;
1495
1496 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1497
1498 /* handle changed, but fd didn't - we need to do it in two steps */
1499 backend_modify (EV_A_ fd, anfd->events, 0);
1500 anfd->events = 0;
1501 anfd->handle = handle;
1502 }
1503 }
1504 }
1505#endif
1506
809 for (i = 0; i < fdchangecnt; ++i) 1507 for (i = 0; i < fdchangecnt; ++i)
810 { 1508 {
811 int fd = fdchanges [i]; 1509 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 1510 ANFD *anfd = anfds + fd;
813 ev_io *w; 1511 ev_io *w;
814 1512
815 unsigned char events = 0; 1513 unsigned char o_events = anfd->events;
1514 unsigned char o_reify = anfd->reify;
816 1515
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1516 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 1517
820#if EV_SELECT_IS_WINSOCKET 1518 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 1519 {
823 unsigned long arg; 1520 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 1521
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1522 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 1523 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 1524
828 #endif 1525 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1526 o_reify = EV__IOFDSET; /* actually |= */
830 } 1527 }
831#endif
832 1528
833 { 1529 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 1530 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 1531 }
844 1532
845 fdchangecnt = 0; 1533 fdchangecnt = 0;
846} 1534}
847 1535
… …
859 fdchanges [fdchangecnt - 1] = fd; 1547 fdchanges [fdchangecnt - 1] = fd;
860 } 1548 }
861} 1549}
862 1550
863/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1551/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
864inline_speed void 1552inline_speed void ecb_cold
865fd_kill (EV_P_ int fd) 1553fd_kill (EV_P_ int fd)
866{ 1554{
867 ev_io *w; 1555 ev_io *w;
868 1556
869 while ((w = (ev_io *)anfds [fd].head)) 1557 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 1559 ev_io_stop (EV_A_ w);
872 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1560 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
873 } 1561 }
874} 1562}
875 1563
876/* check whether the given fd is atcually valid, for error recovery */ 1564/* check whether the given fd is actually valid, for error recovery */
877inline_size int 1565inline_size int ecb_cold
878fd_valid (int fd) 1566fd_valid (int fd)
879{ 1567{
880#ifdef _WIN32 1568#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 1569 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 1570#else
883 return fcntl (fd, F_GETFD) != -1; 1571 return fcntl (fd, F_GETFD) != -1;
884#endif 1572#endif
885} 1573}
886 1574
887/* called on EBADF to verify fds */ 1575/* called on EBADF to verify fds */
888static void noinline 1576static void noinline ecb_cold
889fd_ebadf (EV_P) 1577fd_ebadf (EV_P)
890{ 1578{
891 int fd; 1579 int fd;
892 1580
893 for (fd = 0; fd < anfdmax; ++fd) 1581 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 1583 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 1584 fd_kill (EV_A_ fd);
897} 1585}
898 1586
899/* called on ENOMEM in select/poll to kill some fds and retry */ 1587/* called on ENOMEM in select/poll to kill some fds and retry */
900static void noinline 1588static void noinline ecb_cold
901fd_enomem (EV_P) 1589fd_enomem (EV_P)
902{ 1590{
903 int fd; 1591 int fd;
904 1592
905 for (fd = anfdmax; fd--; ) 1593 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 1594 if (anfds [fd].events)
907 { 1595 {
908 fd_kill (EV_A_ fd); 1596 fd_kill (EV_A_ fd);
909 return; 1597 break;
910 } 1598 }
911} 1599}
912 1600
913/* usually called after fork if backend needs to re-arm all fds from scratch */ 1601/* usually called after fork if backend needs to re-arm all fds from scratch */
914static void noinline 1602static void noinline
… …
923 anfds [fd].emask = 0; 1611 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1612 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 1613 }
926} 1614}
927 1615
1616/* used to prepare libev internal fd's */
1617/* this is not fork-safe */
1618inline_speed void
1619fd_intern (int fd)
1620{
1621#ifdef _WIN32
1622 unsigned long arg = 1;
1623 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1624#else
1625 fcntl (fd, F_SETFD, FD_CLOEXEC);
1626 fcntl (fd, F_SETFL, O_NONBLOCK);
1627#endif
1628}
1629
928/*****************************************************************************/ 1630/*****************************************************************************/
929 1631
930/* 1632/*
931 * the heap functions want a real array index. array index 0 uis guaranteed to not 1633 * the heap functions want a real array index. array index 0 is guaranteed to not
932 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1634 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
933 * the branching factor of the d-tree. 1635 * the branching factor of the d-tree.
934 */ 1636 */
935 1637
936/* 1638/*
… …
1004 1706
1005 for (;;) 1707 for (;;)
1006 { 1708 {
1007 int c = k << 1; 1709 int c = k << 1;
1008 1710
1009 if (c > N + HEAP0 - 1) 1711 if (c >= N + HEAP0)
1010 break; 1712 break;
1011 1713
1012 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1714 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013 ? 1 : 0; 1715 ? 1 : 0;
1014 1716
… …
1050 1752
1051/* move an element suitably so it is in a correct place */ 1753/* move an element suitably so it is in a correct place */
1052inline_size void 1754inline_size void
1053adjustheap (ANHE *heap, int N, int k) 1755adjustheap (ANHE *heap, int N, int k)
1054{ 1756{
1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1757 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056 upheap (heap, k); 1758 upheap (heap, k);
1057 else 1759 else
1058 downheap (heap, N, k); 1760 downheap (heap, N, k);
1059} 1761}
1060 1762
… …
1073/*****************************************************************************/ 1775/*****************************************************************************/
1074 1776
1075/* associate signal watchers to a signal signal */ 1777/* associate signal watchers to a signal signal */
1076typedef struct 1778typedef struct
1077{ 1779{
1780 EV_ATOMIC_T pending;
1781#if EV_MULTIPLICITY
1782 EV_P;
1783#endif
1078 WL head; 1784 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 1785} ANSIG;
1081 1786
1082static ANSIG *signals; 1787static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 1788
1087/*****************************************************************************/ 1789/*****************************************************************************/
1088 1790
1089/* used to prepare libev internal fd's */ 1791#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* this is not fork-safe */
1091inline_speed void
1092fd_intern (int fd)
1093{
1094#ifdef _WIN32
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 1792
1103static void noinline 1793static void noinline ecb_cold
1104evpipe_init (EV_P) 1794evpipe_init (EV_P)
1105{ 1795{
1106 if (!ev_is_active (&pipe_w)) 1796 if (!ev_is_active (&pipe_w))
1107 { 1797 {
1108#if EV_USE_EVENTFD 1798# if EV_USE_EVENTFD
1799 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1800 if (evfd < 0 && errno == EINVAL)
1109 if ((evfd = eventfd (0, 0)) >= 0) 1801 evfd = eventfd (0, 0);
1802
1803 if (evfd >= 0)
1110 { 1804 {
1111 evpipe [0] = -1; 1805 evpipe [0] = -1;
1112 fd_intern (evfd); 1806 fd_intern (evfd); /* doing it twice doesn't hurt */
1113 ev_io_set (&pipe_w, evfd, EV_READ); 1807 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 1808 }
1115 else 1809 else
1116#endif 1810# endif
1117 { 1811 {
1118 while (pipe (evpipe)) 1812 while (pipe (evpipe))
1119 ev_syserr ("(libev) error creating signal/async pipe"); 1813 ev_syserr ("(libev) error creating signal/async pipe");
1120 1814
1121 fd_intern (evpipe [0]); 1815 fd_intern (evpipe [0]);
… …
1126 ev_io_start (EV_A_ &pipe_w); 1820 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */ 1821 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 } 1822 }
1129} 1823}
1130 1824
1131inline_size void 1825inline_speed void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1826evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{ 1827{
1134 if (!*flag) 1828 if (expect_true (*flag))
1829 return;
1830
1831 *flag = 1;
1832
1833 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1834
1835 pipe_write_skipped = 1;
1836
1837 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1838
1839 if (pipe_write_wanted)
1135 { 1840 {
1841 int old_errno;
1842
1843 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1844
1136 int old_errno = errno; /* save errno because write might clobber it */ 1845 old_errno = errno; /* save errno because write will clobber it */
1137
1138 *flag = 1;
1139 1846
1140#if EV_USE_EVENTFD 1847#if EV_USE_EVENTFD
1141 if (evfd >= 0) 1848 if (evfd >= 0)
1142 { 1849 {
1143 uint64_t counter = 1; 1850 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t)); 1851 write (evfd, &counter, sizeof (uint64_t));
1145 } 1852 }
1146 else 1853 else
1147#endif 1854#endif
1855 {
1856 /* win32 people keep sending patches that change this write() to send() */
1857 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1858 /* so when you think this write should be a send instead, please find out */
1859 /* where your send() is from - it's definitely not the microsoft send, and */
1860 /* tell me. thank you. */
1148 write (evpipe [1], &old_errno, 1); 1861 write (evpipe [1], &(evpipe [1]), 1);
1862 }
1149 1863
1150 errno = old_errno; 1864 errno = old_errno;
1151 } 1865 }
1152} 1866}
1153 1867
1154/* called whenever the libev signal pipe */ 1868/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 1869/* got some events (signal, async) */
1156static void 1870static void
1157pipecb (EV_P_ ev_io *iow, int revents) 1871pipecb (EV_P_ ev_io *iow, int revents)
1158{ 1872{
1873 int i;
1874
1875 if (revents & EV_READ)
1876 {
1159#if EV_USE_EVENTFD 1877#if EV_USE_EVENTFD
1160 if (evfd >= 0) 1878 if (evfd >= 0)
1161 { 1879 {
1162 uint64_t counter; 1880 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 1881 read (evfd, &counter, sizeof (uint64_t));
1164 } 1882 }
1165 else 1883 else
1166#endif 1884#endif
1167 { 1885 {
1168 char dummy; 1886 char dummy;
1887 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1169 read (evpipe [0], &dummy, 1); 1888 read (evpipe [0], &dummy, 1);
1889 }
1890 }
1891
1892 pipe_write_skipped = 0;
1893
1894#if EV_SIGNAL_ENABLE
1895 if (sig_pending)
1170 } 1896 {
1897 sig_pending = 0;
1171 1898
1172 if (gotsig && ev_is_default_loop (EV_A)) 1899 for (i = EV_NSIG - 1; i--; )
1173 { 1900 if (expect_false (signals [i].pending))
1174 int signum;
1175 gotsig = 0;
1176
1177 for (signum = signalmax; signum--; )
1178 if (signals [signum].gotsig)
1179 ev_feed_signal_event (EV_A_ signum + 1); 1901 ev_feed_signal_event (EV_A_ i + 1);
1180 } 1902 }
1903#endif
1181 1904
1182#if EV_ASYNC_ENABLE 1905#if EV_ASYNC_ENABLE
1183 if (gotasync) 1906 if (async_pending)
1184 { 1907 {
1185 int i; 1908 async_pending = 0;
1186 gotasync = 0;
1187 1909
1188 for (i = asynccnt; i--; ) 1910 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 1911 if (asyncs [i]->sent)
1190 { 1912 {
1191 asyncs [i]->sent = 0; 1913 asyncs [i]->sent = 0;
… …
1195#endif 1917#endif
1196} 1918}
1197 1919
1198/*****************************************************************************/ 1920/*****************************************************************************/
1199 1921
1922void
1923ev_feed_signal (int signum)
1924{
1925#if EV_MULTIPLICITY
1926 EV_P = signals [signum - 1].loop;
1927
1928 if (!EV_A)
1929 return;
1930#endif
1931
1932 if (!ev_active (&pipe_w))
1933 return;
1934
1935 signals [signum - 1].pending = 1;
1936 evpipe_write (EV_A_ &sig_pending);
1937}
1938
1200static void 1939static void
1201ev_sighandler (int signum) 1940ev_sighandler (int signum)
1202{ 1941{
1203#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct;
1205#endif
1206
1207#if _WIN32 1942#ifdef _WIN32
1208 signal (signum, ev_sighandler); 1943 signal (signum, ev_sighandler);
1209#endif 1944#endif
1210 1945
1211 signals [signum - 1].gotsig = 1; 1946 ev_feed_signal (signum);
1212 evpipe_write (EV_A_ &gotsig);
1213} 1947}
1214 1948
1215void noinline 1949void noinline
1216ev_feed_signal_event (EV_P_ int signum) 1950ev_feed_signal_event (EV_P_ int signum)
1217{ 1951{
1218 WL w; 1952 WL w;
1219 1953
1954 if (expect_false (signum <= 0 || signum > EV_NSIG))
1955 return;
1956
1957 --signum;
1958
1220#if EV_MULTIPLICITY 1959#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1960 /* it is permissible to try to feed a signal to the wrong loop */
1222#endif 1961 /* or, likely more useful, feeding a signal nobody is waiting for */
1223 1962
1224 --signum; 1963 if (expect_false (signals [signum].loop != EV_A))
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 1964 return;
1965#endif
1228 1966
1229 signals [signum].gotsig = 0; 1967 signals [signum].pending = 0;
1230 1968
1231 for (w = signals [signum].head; w; w = w->next) 1969 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1970 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 1971}
1234 1972
1973#if EV_USE_SIGNALFD
1974static void
1975sigfdcb (EV_P_ ev_io *iow, int revents)
1976{
1977 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1978
1979 for (;;)
1980 {
1981 ssize_t res = read (sigfd, si, sizeof (si));
1982
1983 /* not ISO-C, as res might be -1, but works with SuS */
1984 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1985 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1986
1987 if (res < (ssize_t)sizeof (si))
1988 break;
1989 }
1990}
1991#endif
1992
1993#endif
1994
1235/*****************************************************************************/ 1995/*****************************************************************************/
1236 1996
1997#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 1998static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 1999
1241static ev_signal childev; 2000static ev_signal childev;
1242 2001
1243#ifndef WIFCONTINUED 2002#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 2003# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 2008child_reap (EV_P_ int chain, int pid, int status)
1250{ 2009{
1251 ev_child *w; 2010 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2011 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 2012
1254 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2013 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1255 { 2014 {
1256 if ((w->pid == pid || !w->pid) 2015 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 2016 && (!traced || (w->flags & 1)))
1258 { 2017 {
1259 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2018 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1284 /* make sure we are called again until all children have been reaped */ 2043 /* make sure we are called again until all children have been reaped */
1285 /* we need to do it this way so that the callback gets called before we continue */ 2044 /* we need to do it this way so that the callback gets called before we continue */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2045 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2046
1288 child_reap (EV_A_ pid, pid, status); 2047 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2048 if ((EV_PID_HASHSIZE) > 1)
1290 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2049 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1291} 2050}
1292 2051
1293#endif 2052#endif
1294 2053
1295/*****************************************************************************/ 2054/*****************************************************************************/
1296 2055
2056#if EV_USE_IOCP
2057# include "ev_iocp.c"
2058#endif
1297#if EV_USE_PORT 2059#if EV_USE_PORT
1298# include "ev_port.c" 2060# include "ev_port.c"
1299#endif 2061#endif
1300#if EV_USE_KQUEUE 2062#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2063# include "ev_kqueue.c"
… …
1308#endif 2070#endif
1309#if EV_USE_SELECT 2071#if EV_USE_SELECT
1310# include "ev_select.c" 2072# include "ev_select.c"
1311#endif 2073#endif
1312 2074
1313int 2075int ecb_cold
1314ev_version_major (void) 2076ev_version_major (void)
1315{ 2077{
1316 return EV_VERSION_MAJOR; 2078 return EV_VERSION_MAJOR;
1317} 2079}
1318 2080
1319int 2081int ecb_cold
1320ev_version_minor (void) 2082ev_version_minor (void)
1321{ 2083{
1322 return EV_VERSION_MINOR; 2084 return EV_VERSION_MINOR;
1323} 2085}
1324 2086
1325/* return true if we are running with elevated privileges and should ignore env variables */ 2087/* return true if we are running with elevated privileges and should ignore env variables */
1326int inline_size 2088int inline_size ecb_cold
1327enable_secure (void) 2089enable_secure (void)
1328{ 2090{
1329#ifdef _WIN32 2091#ifdef _WIN32
1330 return 0; 2092 return 0;
1331#else 2093#else
1332 return getuid () != geteuid () 2094 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2095 || getgid () != getegid ();
1334#endif 2096#endif
1335} 2097}
1336 2098
1337unsigned int 2099unsigned int ecb_cold
1338ev_supported_backends (void) 2100ev_supported_backends (void)
1339{ 2101{
1340 unsigned int flags = 0; 2102 unsigned int flags = 0;
1341 2103
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2104 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2108 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1347 2109
1348 return flags; 2110 return flags;
1349} 2111}
1350 2112
1351unsigned int 2113unsigned int ecb_cold
1352ev_recommended_backends (void) 2114ev_recommended_backends (void)
1353{ 2115{
1354 unsigned int flags = ev_supported_backends (); 2116 unsigned int flags = ev_supported_backends ();
1355 2117
1356#ifndef __NetBSD__ 2118#ifndef __NetBSD__
… …
1361#ifdef __APPLE__ 2123#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2124 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2125 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2126 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1365#endif 2127#endif
2128#ifdef __FreeBSD__
2129 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2130#endif
1366 2131
1367 return flags; 2132 return flags;
1368} 2133}
1369 2134
1370unsigned int 2135unsigned int ecb_cold
1371ev_embeddable_backends (void) 2136ev_embeddable_backends (void)
1372{ 2137{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2138 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1374 2139
1375 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2140 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1376 /* please fix it and tell me how to detect the fix */ 2141 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1377 flags &= ~EVBACKEND_EPOLL; 2142 flags &= ~EVBACKEND_EPOLL;
1378 2143
1379 return flags; 2144 return flags;
1380} 2145}
1381 2146
1382unsigned int 2147unsigned int
1383ev_backend (EV_P) 2148ev_backend (EV_P)
1384{ 2149{
1385 return backend; 2150 return backend;
1386} 2151}
1387 2152
1388#if EV_MINIMAL < 2 2153#if EV_FEATURE_API
1389unsigned int 2154unsigned int
1390ev_loop_count (EV_P) 2155ev_iteration (EV_P)
1391{ 2156{
1392 return loop_count; 2157 return loop_count;
1393} 2158}
1394 2159
1395unsigned int 2160unsigned int
1396ev_loop_depth (EV_P) 2161ev_depth (EV_P)
1397{ 2162{
1398 return loop_depth; 2163 return loop_depth;
1399} 2164}
1400 2165
1401void 2166void
… …
1420ev_userdata (EV_P) 2185ev_userdata (EV_P)
1421{ 2186{
1422 return userdata; 2187 return userdata;
1423} 2188}
1424 2189
2190void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2191ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1426{ 2192{
1427 invoke_cb = invoke_pending_cb; 2193 invoke_cb = invoke_pending_cb;
1428} 2194}
1429 2195
2196void
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2197ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1431{ 2198{
1432 release_cb = release; 2199 release_cb = release;
1433 acquire_cb = acquire; 2200 acquire_cb = acquire;
1434} 2201}
1435#endif 2202#endif
1436 2203
1437/* initialise a loop structure, must be zero-initialised */ 2204/* initialise a loop structure, must be zero-initialised */
1438static void noinline 2205static void noinline ecb_cold
1439loop_init (EV_P_ unsigned int flags) 2206loop_init (EV_P_ unsigned int flags)
1440{ 2207{
1441 if (!backend) 2208 if (!backend)
1442 { 2209 {
2210 origflags = flags;
2211
1443#if EV_USE_REALTIME 2212#if EV_USE_REALTIME
1444 if (!have_realtime) 2213 if (!have_realtime)
1445 { 2214 {
1446 struct timespec ts; 2215 struct timespec ts;
1447 2216
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2227 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 2228 have_monotonic = 1;
1460 } 2229 }
1461#endif 2230#endif
1462 2231
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 2232 /* pid check not overridable via env */
1481#ifndef _WIN32 2233#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 2234 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 2235 curpid = getpid ();
1484#endif 2236#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 2238 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 2239 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 2240 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 2241 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 2242
1491 if (!(flags & 0x0000ffffU)) 2243 ev_rt_now = ev_time ();
2244 mn_now = get_clock ();
2245 now_floor = mn_now;
2246 rtmn_diff = ev_rt_now - mn_now;
2247#if EV_FEATURE_API
2248 invoke_cb = ev_invoke_pending;
2249#endif
2250
2251 io_blocktime = 0.;
2252 timeout_blocktime = 0.;
2253 backend = 0;
2254 backend_fd = -1;
2255 sig_pending = 0;
2256#if EV_ASYNC_ENABLE
2257 async_pending = 0;
2258#endif
2259 pipe_write_skipped = 0;
2260 pipe_write_wanted = 0;
2261#if EV_USE_INOTIFY
2262 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2263#endif
2264#if EV_USE_SIGNALFD
2265 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2266#endif
2267
2268 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 2269 flags |= ev_recommended_backends ();
1493 2270
2271#if EV_USE_IOCP
2272 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2273#endif
1494#if EV_USE_PORT 2274#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2275 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 2276#endif
1497#if EV_USE_KQUEUE 2277#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2278 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2287 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1508#endif 2288#endif
1509 2289
1510 ev_prepare_init (&pending_w, pendingcb); 2290 ev_prepare_init (&pending_w, pendingcb);
1511 2291
2292#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 2293 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 2294 ev_set_priority (&pipe_w, EV_MAXPRI);
2295#endif
1514 } 2296 }
1515} 2297}
1516 2298
1517/* free up a loop structure */ 2299/* free up a loop structure */
1518static void noinline 2300void ecb_cold
1519loop_destroy (EV_P) 2301ev_loop_destroy (EV_P)
1520{ 2302{
1521 int i; 2303 int i;
1522 2304
2305#if EV_MULTIPLICITY
2306 /* mimic free (0) */
2307 if (!EV_A)
2308 return;
2309#endif
2310
2311#if EV_CLEANUP_ENABLE
2312 /* queue cleanup watchers (and execute them) */
2313 if (expect_false (cleanupcnt))
2314 {
2315 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2316 EV_INVOKE_PENDING;
2317 }
2318#endif
2319
2320#if EV_CHILD_ENABLE
2321 if (ev_is_active (&childev))
2322 {
2323 ev_ref (EV_A); /* child watcher */
2324 ev_signal_stop (EV_A_ &childev);
2325 }
2326#endif
2327
1523 if (ev_is_active (&pipe_w)) 2328 if (ev_is_active (&pipe_w))
1524 { 2329 {
1525 ev_ref (EV_A); /* signal watcher */ 2330 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 2331 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 2332
1528#if EV_USE_EVENTFD 2333#if EV_USE_EVENTFD
1529 if (evfd >= 0) 2334 if (evfd >= 0)
1530 close (evfd); 2335 close (evfd);
1531#endif 2336#endif
1532 2337
1533 if (evpipe [0] >= 0) 2338 if (evpipe [0] >= 0)
1534 { 2339 {
1535 close (evpipe [0]); 2340 EV_WIN32_CLOSE_FD (evpipe [0]);
1536 close (evpipe [1]); 2341 EV_WIN32_CLOSE_FD (evpipe [1]);
1537 } 2342 }
1538 } 2343 }
2344
2345#if EV_USE_SIGNALFD
2346 if (ev_is_active (&sigfd_w))
2347 close (sigfd);
2348#endif
1539 2349
1540#if EV_USE_INOTIFY 2350#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 2351 if (fs_fd >= 0)
1542 close (fs_fd); 2352 close (fs_fd);
1543#endif 2353#endif
1544 2354
1545 if (backend_fd >= 0) 2355 if (backend_fd >= 0)
1546 close (backend_fd); 2356 close (backend_fd);
1547 2357
2358#if EV_USE_IOCP
2359 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2360#endif
1548#if EV_USE_PORT 2361#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2362 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 2363#endif
1551#if EV_USE_KQUEUE 2364#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2365 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1567#if EV_IDLE_ENABLE 2380#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 2381 array_free (idle, [i]);
1569#endif 2382#endif
1570 } 2383 }
1571 2384
1572 ev_free (anfds); anfdmax = 0; 2385 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 2386
1574 /* have to use the microsoft-never-gets-it-right macro */ 2387 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 2388 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 2389 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 2390 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 2392 array_free (periodic, EMPTY);
1580#endif 2393#endif
1581#if EV_FORK_ENABLE 2394#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 2395 array_free (fork, EMPTY);
1583#endif 2396#endif
2397#if EV_CLEANUP_ENABLE
2398 array_free (cleanup, EMPTY);
2399#endif
1584 array_free (prepare, EMPTY); 2400 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 2401 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 2402#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 2403 array_free (async, EMPTY);
1588#endif 2404#endif
1589 2405
1590 backend = 0; 2406 backend = 0;
2407
2408#if EV_MULTIPLICITY
2409 if (ev_is_default_loop (EV_A))
2410#endif
2411 ev_default_loop_ptr = 0;
2412#if EV_MULTIPLICITY
2413 else
2414 ev_free (EV_A);
2415#endif
1591} 2416}
1592 2417
1593#if EV_USE_INOTIFY 2418#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 2419inline_size void infy_fork (EV_P);
1595#endif 2420#endif
… …
1610 infy_fork (EV_A); 2435 infy_fork (EV_A);
1611#endif 2436#endif
1612 2437
1613 if (ev_is_active (&pipe_w)) 2438 if (ev_is_active (&pipe_w))
1614 { 2439 {
1615 /* this "locks" the handlers against writing to the pipe */ 2440 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 2441
1622 ev_ref (EV_A); 2442 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 2443 ev_io_stop (EV_A_ &pipe_w);
1624 2444
1625#if EV_USE_EVENTFD 2445#if EV_USE_EVENTFD
… …
1627 close (evfd); 2447 close (evfd);
1628#endif 2448#endif
1629 2449
1630 if (evpipe [0] >= 0) 2450 if (evpipe [0] >= 0)
1631 { 2451 {
1632 close (evpipe [0]); 2452 EV_WIN32_CLOSE_FD (evpipe [0]);
1633 close (evpipe [1]); 2453 EV_WIN32_CLOSE_FD (evpipe [1]);
1634 } 2454 }
1635 2455
2456#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1636 evpipe_init (EV_A); 2457 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 2458 /* now iterate over everything, in case we missed something */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 2459 pipecb (EV_A_ &pipe_w, EV_READ);
2460#endif
1639 } 2461 }
1640 2462
1641 postfork = 0; 2463 postfork = 0;
1642} 2464}
1643 2465
1644#if EV_MULTIPLICITY 2466#if EV_MULTIPLICITY
1645 2467
1646struct ev_loop * 2468struct ev_loop * ecb_cold
1647ev_loop_new (unsigned int flags) 2469ev_loop_new (unsigned int flags)
1648{ 2470{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2471 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 2472
1651 memset (loop, 0, sizeof (struct ev_loop)); 2473 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 2474 loop_init (EV_A_ flags);
1654 2475
1655 if (ev_backend (EV_A)) 2476 if (ev_backend (EV_A))
1656 return loop; 2477 return EV_A;
1657 2478
2479 ev_free (EV_A);
1658 return 0; 2480 return 0;
1659} 2481}
1660 2482
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 2483#endif /* multiplicity */
1674 2484
1675#if EV_VERIFY 2485#if EV_VERIFY
1676static void noinline 2486static void noinline ecb_cold
1677verify_watcher (EV_P_ W w) 2487verify_watcher (EV_P_ W w)
1678{ 2488{
1679 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2489 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1680 2490
1681 if (w->pending) 2491 if (w->pending)
1682 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2492 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1683} 2493}
1684 2494
1685static void noinline 2495static void noinline ecb_cold
1686verify_heap (EV_P_ ANHE *heap, int N) 2496verify_heap (EV_P_ ANHE *heap, int N)
1687{ 2497{
1688 int i; 2498 int i;
1689 2499
1690 for (i = HEAP0; i < N + HEAP0; ++i) 2500 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 2505
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2506 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 2507 }
1698} 2508}
1699 2509
1700static void noinline 2510static void noinline ecb_cold
1701array_verify (EV_P_ W *ws, int cnt) 2511array_verify (EV_P_ W *ws, int cnt)
1702{ 2512{
1703 while (cnt--) 2513 while (cnt--)
1704 { 2514 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2515 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 2516 verify_watcher (EV_A_ ws [cnt]);
1707 } 2517 }
1708} 2518}
1709#endif 2519#endif
1710 2520
1711#if EV_MINIMAL < 2 2521#if EV_FEATURE_API
1712void 2522void ecb_cold
1713ev_loop_verify (EV_P) 2523ev_verify (EV_P)
1714{ 2524{
1715#if EV_VERIFY 2525#if EV_VERIFY
1716 int i; 2526 int i;
1717 WL w; 2527 WL w;
1718 2528
… …
1752#if EV_FORK_ENABLE 2562#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 2563 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 2564 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 2565#endif
1756 2566
2567#if EV_CLEANUP_ENABLE
2568 assert (cleanupmax >= cleanupcnt);
2569 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2570#endif
2571
1757#if EV_ASYNC_ENABLE 2572#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 2573 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 2574 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 2575#endif
1761 2576
2577#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 2578 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 2579 array_verify (EV_A_ (W *)prepares, preparecnt);
2580#endif
1764 2581
2582#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 2583 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 2584 array_verify (EV_A_ (W *)checks, checkcnt);
2585#endif
1767 2586
1768# if 0 2587# if 0
2588#if EV_CHILD_ENABLE
1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2589 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2590 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2591#endif
1771# endif 2592# endif
1772#endif 2593#endif
1773} 2594}
1774#endif 2595#endif
1775 2596
1776#if EV_MULTIPLICITY 2597#if EV_MULTIPLICITY
1777struct ev_loop * 2598struct ev_loop * ecb_cold
1778ev_default_loop_init (unsigned int flags)
1779#else 2599#else
1780int 2600int
2601#endif
1781ev_default_loop (unsigned int flags) 2602ev_default_loop (unsigned int flags)
1782#endif
1783{ 2603{
1784 if (!ev_default_loop_ptr) 2604 if (!ev_default_loop_ptr)
1785 { 2605 {
1786#if EV_MULTIPLICITY 2606#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2607 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 2608#else
1789 ev_default_loop_ptr = 1; 2609 ev_default_loop_ptr = 1;
1790#endif 2610#endif
1791 2611
1792 loop_init (EV_A_ flags); 2612 loop_init (EV_A_ flags);
1793 2613
1794 if (ev_backend (EV_A)) 2614 if (ev_backend (EV_A))
1795 { 2615 {
1796#ifndef _WIN32 2616#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 2617 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 2618 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 2619 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2620 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 2621#endif
… …
1806 2626
1807 return ev_default_loop_ptr; 2627 return ev_default_loop_ptr;
1808} 2628}
1809 2629
1810void 2630void
1811ev_default_destroy (void) 2631ev_loop_fork (EV_P)
1812{ 2632{
1813#if EV_MULTIPLICITY
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */ 2633 postfork = 1; /* must be in line with ev_default_fork */
1835} 2634}
1836 2635
1837/*****************************************************************************/ 2636/*****************************************************************************/
1838 2637
1839void 2638void
… …
1861 2660
1862 for (pri = NUMPRI; pri--; ) 2661 for (pri = NUMPRI; pri--; )
1863 while (pendingcnt [pri]) 2662 while (pendingcnt [pri])
1864 { 2663 {
1865 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2664 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1866
1867 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1868 /* ^ this is no longer true, as pending_w could be here */
1869 2665
1870 p->w->pending = 0; 2666 p->w->pending = 0;
1871 EV_CB_INVOKE (p->w, p->events); 2667 EV_CB_INVOKE (p->w, p->events);
1872 EV_FREQUENT_CHECK; 2668 EV_FREQUENT_CHECK;
1873 } 2669 }
… …
1930 EV_FREQUENT_CHECK; 2726 EV_FREQUENT_CHECK;
1931 feed_reverse (EV_A_ (W)w); 2727 feed_reverse (EV_A_ (W)w);
1932 } 2728 }
1933 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2729 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1934 2730
1935 feed_reverse_done (EV_A_ EV_TIMEOUT); 2731 feed_reverse_done (EV_A_ EV_TIMER);
1936 } 2732 }
1937} 2733}
1938 2734
1939#if EV_PERIODIC_ENABLE 2735#if EV_PERIODIC_ENABLE
2736
2737static void noinline
2738periodic_recalc (EV_P_ ev_periodic *w)
2739{
2740 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2741 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2742
2743 /* the above almost always errs on the low side */
2744 while (at <= ev_rt_now)
2745 {
2746 ev_tstamp nat = at + w->interval;
2747
2748 /* when resolution fails us, we use ev_rt_now */
2749 if (expect_false (nat == at))
2750 {
2751 at = ev_rt_now;
2752 break;
2753 }
2754
2755 at = nat;
2756 }
2757
2758 ev_at (w) = at;
2759}
2760
1940/* make periodics pending */ 2761/* make periodics pending */
1941inline_size void 2762inline_size void
1942periodics_reify (EV_P) 2763periodics_reify (EV_P)
1943{ 2764{
1944 EV_FREQUENT_CHECK; 2765 EV_FREQUENT_CHECK;
… …
1963 ANHE_at_cache (periodics [HEAP0]); 2784 ANHE_at_cache (periodics [HEAP0]);
1964 downheap (periodics, periodiccnt, HEAP0); 2785 downheap (periodics, periodiccnt, HEAP0);
1965 } 2786 }
1966 else if (w->interval) 2787 else if (w->interval)
1967 { 2788 {
1968 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2789 periodic_recalc (EV_A_ w);
1969 /* if next trigger time is not sufficiently in the future, put it there */
1970 /* this might happen because of floating point inexactness */
1971 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1972 {
1973 ev_at (w) += w->interval;
1974
1975 /* if interval is unreasonably low we might still have a time in the past */
1976 /* so correct this. this will make the periodic very inexact, but the user */
1977 /* has effectively asked to get triggered more often than possible */
1978 if (ev_at (w) < ev_rt_now)
1979 ev_at (w) = ev_rt_now;
1980 }
1981
1982 ANHE_at_cache (periodics [HEAP0]); 2790 ANHE_at_cache (periodics [HEAP0]);
1983 downheap (periodics, periodiccnt, HEAP0); 2791 downheap (periodics, periodiccnt, HEAP0);
1984 } 2792 }
1985 else 2793 else
1986 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2794 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1993 feed_reverse_done (EV_A_ EV_PERIODIC); 2801 feed_reverse_done (EV_A_ EV_PERIODIC);
1994 } 2802 }
1995} 2803}
1996 2804
1997/* simply recalculate all periodics */ 2805/* simply recalculate all periodics */
1998/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2806/* TODO: maybe ensure that at least one event happens when jumping forward? */
1999static void noinline 2807static void noinline ecb_cold
2000periodics_reschedule (EV_P) 2808periodics_reschedule (EV_P)
2001{ 2809{
2002 int i; 2810 int i;
2003 2811
2004 /* adjust periodics after time jump */ 2812 /* adjust periodics after time jump */
… …
2007 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2815 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2008 2816
2009 if (w->reschedule_cb) 2817 if (w->reschedule_cb)
2010 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2818 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2011 else if (w->interval) 2819 else if (w->interval)
2012 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2820 periodic_recalc (EV_A_ w);
2013 2821
2014 ANHE_at_cache (periodics [i]); 2822 ANHE_at_cache (periodics [i]);
2015 } 2823 }
2016 2824
2017 reheap (periodics, periodiccnt); 2825 reheap (periodics, periodiccnt);
2018} 2826}
2019#endif 2827#endif
2020 2828
2021/* adjust all timers by a given offset */ 2829/* adjust all timers by a given offset */
2022static void noinline 2830static void noinline ecb_cold
2023timers_reschedule (EV_P_ ev_tstamp adjust) 2831timers_reschedule (EV_P_ ev_tstamp adjust)
2024{ 2832{
2025 int i; 2833 int i;
2026 2834
2027 for (i = 0; i < timercnt; ++i) 2835 for (i = 0; i < timercnt; ++i)
… …
2031 ANHE_at_cache (*he); 2839 ANHE_at_cache (*he);
2032 } 2840 }
2033} 2841}
2034 2842
2035/* fetch new monotonic and realtime times from the kernel */ 2843/* fetch new monotonic and realtime times from the kernel */
2036/* also detetc if there was a timejump, and act accordingly */ 2844/* also detect if there was a timejump, and act accordingly */
2037inline_speed void 2845inline_speed void
2038time_update (EV_P_ ev_tstamp max_block) 2846time_update (EV_P_ ev_tstamp max_block)
2039{ 2847{
2040#if EV_USE_MONOTONIC 2848#if EV_USE_MONOTONIC
2041 if (expect_true (have_monotonic)) 2849 if (expect_true (have_monotonic))
… …
2064 * doesn't hurt either as we only do this on time-jumps or 2872 * doesn't hurt either as we only do this on time-jumps or
2065 * in the unlikely event of having been preempted here. 2873 * in the unlikely event of having been preempted here.
2066 */ 2874 */
2067 for (i = 4; --i; ) 2875 for (i = 4; --i; )
2068 { 2876 {
2877 ev_tstamp diff;
2069 rtmn_diff = ev_rt_now - mn_now; 2878 rtmn_diff = ev_rt_now - mn_now;
2070 2879
2880 diff = odiff - rtmn_diff;
2881
2071 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2882 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2072 return; /* all is well */ 2883 return; /* all is well */
2073 2884
2074 ev_rt_now = ev_time (); 2885 ev_rt_now = ev_time ();
2075 mn_now = get_clock (); 2886 mn_now = get_clock ();
2076 now_floor = mn_now; 2887 now_floor = mn_now;
… …
2099 mn_now = ev_rt_now; 2910 mn_now = ev_rt_now;
2100 } 2911 }
2101} 2912}
2102 2913
2103void 2914void
2104ev_loop (EV_P_ int flags) 2915ev_run (EV_P_ int flags)
2105{ 2916{
2106#if EV_MINIMAL < 2 2917#if EV_FEATURE_API
2107 ++loop_depth; 2918 ++loop_depth;
2108#endif 2919#endif
2109 2920
2110 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2921 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2111 2922
2112 loop_done = EVUNLOOP_CANCEL; 2923 loop_done = EVBREAK_CANCEL;
2113 2924
2114 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2925 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2115 2926
2116 do 2927 do
2117 { 2928 {
2118#if EV_VERIFY >= 2 2929#if EV_VERIFY >= 2
2119 ev_loop_verify (EV_A); 2930 ev_verify (EV_A);
2120#endif 2931#endif
2121 2932
2122#ifndef _WIN32 2933#ifndef _WIN32
2123 if (expect_false (curpid)) /* penalise the forking check even more */ 2934 if (expect_false (curpid)) /* penalise the forking check even more */
2124 if (expect_false (getpid () != curpid)) 2935 if (expect_false (getpid () != curpid))
… …
2136 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2947 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2137 EV_INVOKE_PENDING; 2948 EV_INVOKE_PENDING;
2138 } 2949 }
2139#endif 2950#endif
2140 2951
2952#if EV_PREPARE_ENABLE
2141 /* queue prepare watchers (and execute them) */ 2953 /* queue prepare watchers (and execute them) */
2142 if (expect_false (preparecnt)) 2954 if (expect_false (preparecnt))
2143 { 2955 {
2144 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2956 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2145 EV_INVOKE_PENDING; 2957 EV_INVOKE_PENDING;
2146 } 2958 }
2959#endif
2147 2960
2148 if (expect_false (loop_done)) 2961 if (expect_false (loop_done))
2149 break; 2962 break;
2150 2963
2151 /* we might have forked, so reify kernel state if necessary */ 2964 /* we might have forked, so reify kernel state if necessary */
… …
2158 /* calculate blocking time */ 2971 /* calculate blocking time */
2159 { 2972 {
2160 ev_tstamp waittime = 0.; 2973 ev_tstamp waittime = 0.;
2161 ev_tstamp sleeptime = 0.; 2974 ev_tstamp sleeptime = 0.;
2162 2975
2976 /* remember old timestamp for io_blocktime calculation */
2977 ev_tstamp prev_mn_now = mn_now;
2978
2979 /* update time to cancel out callback processing overhead */
2980 time_update (EV_A_ 1e100);
2981
2982 /* from now on, we want a pipe-wake-up */
2983 pipe_write_wanted = 1;
2984
2985 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2986
2163 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2987 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2164 { 2988 {
2165 /* remember old timestamp for io_blocktime calculation */
2166 ev_tstamp prev_mn_now = mn_now;
2167
2168 /* update time to cancel out callback processing overhead */
2169 time_update (EV_A_ 1e100);
2170
2171 waittime = MAX_BLOCKTIME; 2989 waittime = MAX_BLOCKTIME;
2172 2990
2173 if (timercnt) 2991 if (timercnt)
2174 { 2992 {
2175 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2993 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2176 if (waittime > to) waittime = to; 2994 if (waittime > to) waittime = to;
2177 } 2995 }
2178 2996
2179#if EV_PERIODIC_ENABLE 2997#if EV_PERIODIC_ENABLE
2180 if (periodiccnt) 2998 if (periodiccnt)
2181 { 2999 {
2182 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3000 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2183 if (waittime > to) waittime = to; 3001 if (waittime > to) waittime = to;
2184 } 3002 }
2185#endif 3003#endif
2186 3004
2187 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3005 /* don't let timeouts decrease the waittime below timeout_blocktime */
2188 if (expect_false (waittime < timeout_blocktime)) 3006 if (expect_false (waittime < timeout_blocktime))
2189 waittime = timeout_blocktime; 3007 waittime = timeout_blocktime;
3008
3009 /* at this point, we NEED to wait, so we have to ensure */
3010 /* to pass a minimum nonzero value to the backend */
3011 if (expect_false (waittime < backend_mintime))
3012 waittime = backend_mintime;
2190 3013
2191 /* extra check because io_blocktime is commonly 0 */ 3014 /* extra check because io_blocktime is commonly 0 */
2192 if (expect_false (io_blocktime)) 3015 if (expect_false (io_blocktime))
2193 { 3016 {
2194 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3017 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2195 3018
2196 if (sleeptime > waittime - backend_fudge) 3019 if (sleeptime > waittime - backend_mintime)
2197 sleeptime = waittime - backend_fudge; 3020 sleeptime = waittime - backend_mintime;
2198 3021
2199 if (expect_true (sleeptime > 0.)) 3022 if (expect_true (sleeptime > 0.))
2200 { 3023 {
2201 ev_sleep (sleeptime); 3024 ev_sleep (sleeptime);
2202 waittime -= sleeptime; 3025 waittime -= sleeptime;
2203 } 3026 }
2204 } 3027 }
2205 } 3028 }
2206 3029
2207#if EV_MINIMAL < 2 3030#if EV_FEATURE_API
2208 ++loop_count; 3031 ++loop_count;
2209#endif 3032#endif
2210 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3033 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2211 backend_poll (EV_A_ waittime); 3034 backend_poll (EV_A_ waittime);
2212 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3035 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3036
3037 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3038
3039 if (pipe_write_skipped)
3040 {
3041 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3042 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3043 }
3044
2213 3045
2214 /* update ev_rt_now, do magic */ 3046 /* update ev_rt_now, do magic */
2215 time_update (EV_A_ waittime + sleeptime); 3047 time_update (EV_A_ waittime + sleeptime);
2216 } 3048 }
2217 3049
… …
2224#if EV_IDLE_ENABLE 3056#if EV_IDLE_ENABLE
2225 /* queue idle watchers unless other events are pending */ 3057 /* queue idle watchers unless other events are pending */
2226 idle_reify (EV_A); 3058 idle_reify (EV_A);
2227#endif 3059#endif
2228 3060
3061#if EV_CHECK_ENABLE
2229 /* queue check watchers, to be executed first */ 3062 /* queue check watchers, to be executed first */
2230 if (expect_false (checkcnt)) 3063 if (expect_false (checkcnt))
2231 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3064 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3065#endif
2232 3066
2233 EV_INVOKE_PENDING; 3067 EV_INVOKE_PENDING;
2234 } 3068 }
2235 while (expect_true ( 3069 while (expect_true (
2236 activecnt 3070 activecnt
2237 && !loop_done 3071 && !loop_done
2238 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3072 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2239 )); 3073 ));
2240 3074
2241 if (loop_done == EVUNLOOP_ONE) 3075 if (loop_done == EVBREAK_ONE)
2242 loop_done = EVUNLOOP_CANCEL; 3076 loop_done = EVBREAK_CANCEL;
2243 3077
2244#if EV_MINIMAL < 2 3078#if EV_FEATURE_API
2245 --loop_depth; 3079 --loop_depth;
2246#endif 3080#endif
2247} 3081}
2248 3082
2249void 3083void
2250ev_unloop (EV_P_ int how) 3084ev_break (EV_P_ int how)
2251{ 3085{
2252 loop_done = how; 3086 loop_done = how;
2253} 3087}
2254 3088
2255void 3089void
… …
2302inline_size void 3136inline_size void
2303wlist_del (WL *head, WL elem) 3137wlist_del (WL *head, WL elem)
2304{ 3138{
2305 while (*head) 3139 while (*head)
2306 { 3140 {
2307 if (*head == elem) 3141 if (expect_true (*head == elem))
2308 { 3142 {
2309 *head = elem->next; 3143 *head = elem->next;
2310 return; 3144 break;
2311 } 3145 }
2312 3146
2313 head = &(*head)->next; 3147 head = &(*head)->next;
2314 } 3148 }
2315} 3149}
… …
2375 3209
2376 if (expect_false (ev_is_active (w))) 3210 if (expect_false (ev_is_active (w)))
2377 return; 3211 return;
2378 3212
2379 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3213 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2380 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3214 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2381 3215
2382 EV_FREQUENT_CHECK; 3216 EV_FREQUENT_CHECK;
2383 3217
2384 ev_start (EV_A_ (W)w, 1); 3218 ev_start (EV_A_ (W)w, 1);
2385 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3219 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2403 EV_FREQUENT_CHECK; 3237 EV_FREQUENT_CHECK;
2404 3238
2405 wlist_del (&anfds[w->fd].head, (WL)w); 3239 wlist_del (&anfds[w->fd].head, (WL)w);
2406 ev_stop (EV_A_ (W)w); 3240 ev_stop (EV_A_ (W)w);
2407 3241
2408 fd_change (EV_A_ w->fd, 1); 3242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2409 3243
2410 EV_FREQUENT_CHECK; 3244 EV_FREQUENT_CHECK;
2411} 3245}
2412 3246
2413void noinline 3247void noinline
… …
2455 timers [active] = timers [timercnt + HEAP0]; 3289 timers [active] = timers [timercnt + HEAP0];
2456 adjustheap (timers, timercnt, active); 3290 adjustheap (timers, timercnt, active);
2457 } 3291 }
2458 } 3292 }
2459 3293
2460 EV_FREQUENT_CHECK;
2461
2462 ev_at (w) -= mn_now; 3294 ev_at (w) -= mn_now;
2463 3295
2464 ev_stop (EV_A_ (W)w); 3296 ev_stop (EV_A_ (W)w);
3297
3298 EV_FREQUENT_CHECK;
2465} 3299}
2466 3300
2467void noinline 3301void noinline
2468ev_timer_again (EV_P_ ev_timer *w) 3302ev_timer_again (EV_P_ ev_timer *w)
2469{ 3303{
2470 EV_FREQUENT_CHECK; 3304 EV_FREQUENT_CHECK;
3305
3306 clear_pending (EV_A_ (W)w);
2471 3307
2472 if (ev_is_active (w)) 3308 if (ev_is_active (w))
2473 { 3309 {
2474 if (w->repeat) 3310 if (w->repeat)
2475 { 3311 {
… …
2487 } 3323 }
2488 3324
2489 EV_FREQUENT_CHECK; 3325 EV_FREQUENT_CHECK;
2490} 3326}
2491 3327
3328ev_tstamp
3329ev_timer_remaining (EV_P_ ev_timer *w)
3330{
3331 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3332}
3333
2492#if EV_PERIODIC_ENABLE 3334#if EV_PERIODIC_ENABLE
2493void noinline 3335void noinline
2494ev_periodic_start (EV_P_ ev_periodic *w) 3336ev_periodic_start (EV_P_ ev_periodic *w)
2495{ 3337{
2496 if (expect_false (ev_is_active (w))) 3338 if (expect_false (ev_is_active (w)))
… …
2499 if (w->reschedule_cb) 3341 if (w->reschedule_cb)
2500 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3342 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2501 else if (w->interval) 3343 else if (w->interval)
2502 { 3344 {
2503 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3345 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2504 /* this formula differs from the one in periodic_reify because we do not always round up */ 3346 periodic_recalc (EV_A_ w);
2505 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2506 } 3347 }
2507 else 3348 else
2508 ev_at (w) = w->offset; 3349 ev_at (w) = w->offset;
2509 3350
2510 EV_FREQUENT_CHECK; 3351 EV_FREQUENT_CHECK;
… …
2542 periodics [active] = periodics [periodiccnt + HEAP0]; 3383 periodics [active] = periodics [periodiccnt + HEAP0];
2543 adjustheap (periodics, periodiccnt, active); 3384 adjustheap (periodics, periodiccnt, active);
2544 } 3385 }
2545 } 3386 }
2546 3387
2547 EV_FREQUENT_CHECK;
2548
2549 ev_stop (EV_A_ (W)w); 3388 ev_stop (EV_A_ (W)w);
3389
3390 EV_FREQUENT_CHECK;
2550} 3391}
2551 3392
2552void noinline 3393void noinline
2553ev_periodic_again (EV_P_ ev_periodic *w) 3394ev_periodic_again (EV_P_ ev_periodic *w)
2554{ 3395{
… …
2560 3401
2561#ifndef SA_RESTART 3402#ifndef SA_RESTART
2562# define SA_RESTART 0 3403# define SA_RESTART 0
2563#endif 3404#endif
2564 3405
3406#if EV_SIGNAL_ENABLE
3407
2565void noinline 3408void noinline
2566ev_signal_start (EV_P_ ev_signal *w) 3409ev_signal_start (EV_P_ ev_signal *w)
2567{ 3410{
2568#if EV_MULTIPLICITY
2569 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2570#endif
2571 if (expect_false (ev_is_active (w))) 3411 if (expect_false (ev_is_active (w)))
2572 return; 3412 return;
2573 3413
2574 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3414 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2575 3415
2576 evpipe_init (EV_A); 3416#if EV_MULTIPLICITY
3417 assert (("libev: a signal must not be attached to two different loops",
3418 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2577 3419
2578 EV_FREQUENT_CHECK; 3420 signals [w->signum - 1].loop = EV_A;
3421#endif
2579 3422
3423 EV_FREQUENT_CHECK;
3424
3425#if EV_USE_SIGNALFD
3426 if (sigfd == -2)
2580 { 3427 {
2581#ifndef _WIN32 3428 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2582 sigset_t full, prev; 3429 if (sigfd < 0 && errno == EINVAL)
2583 sigfillset (&full); 3430 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2584 sigprocmask (SIG_SETMASK, &full, &prev);
2585#endif
2586 3431
2587 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3432 if (sigfd >= 0)
3433 {
3434 fd_intern (sigfd); /* doing it twice will not hurt */
2588 3435
2589#ifndef _WIN32 3436 sigemptyset (&sigfd_set);
2590 sigprocmask (SIG_SETMASK, &prev, 0); 3437
2591#endif 3438 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3439 ev_set_priority (&sigfd_w, EV_MAXPRI);
3440 ev_io_start (EV_A_ &sigfd_w);
3441 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3442 }
2592 } 3443 }
3444
3445 if (sigfd >= 0)
3446 {
3447 /* TODO: check .head */
3448 sigaddset (&sigfd_set, w->signum);
3449 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3450
3451 signalfd (sigfd, &sigfd_set, 0);
3452 }
3453#endif
2593 3454
2594 ev_start (EV_A_ (W)w, 1); 3455 ev_start (EV_A_ (W)w, 1);
2595 wlist_add (&signals [w->signum - 1].head, (WL)w); 3456 wlist_add (&signals [w->signum - 1].head, (WL)w);
2596 3457
2597 if (!((WL)w)->next) 3458 if (!((WL)w)->next)
3459# if EV_USE_SIGNALFD
3460 if (sigfd < 0) /*TODO*/
3461# endif
2598 { 3462 {
2599#if _WIN32 3463# ifdef _WIN32
3464 evpipe_init (EV_A);
3465
2600 signal (w->signum, ev_sighandler); 3466 signal (w->signum, ev_sighandler);
2601#else 3467# else
2602 struct sigaction sa = { }; 3468 struct sigaction sa;
3469
3470 evpipe_init (EV_A);
3471
2603 sa.sa_handler = ev_sighandler; 3472 sa.sa_handler = ev_sighandler;
2604 sigfillset (&sa.sa_mask); 3473 sigfillset (&sa.sa_mask);
2605 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3474 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2606 sigaction (w->signum, &sa, 0); 3475 sigaction (w->signum, &sa, 0);
3476
3477 if (origflags & EVFLAG_NOSIGMASK)
3478 {
3479 sigemptyset (&sa.sa_mask);
3480 sigaddset (&sa.sa_mask, w->signum);
3481 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3482 }
2607#endif 3483#endif
2608 } 3484 }
2609 3485
2610 EV_FREQUENT_CHECK; 3486 EV_FREQUENT_CHECK;
2611} 3487}
2612 3488
2613void noinline 3489void noinline
… …
2621 3497
2622 wlist_del (&signals [w->signum - 1].head, (WL)w); 3498 wlist_del (&signals [w->signum - 1].head, (WL)w);
2623 ev_stop (EV_A_ (W)w); 3499 ev_stop (EV_A_ (W)w);
2624 3500
2625 if (!signals [w->signum - 1].head) 3501 if (!signals [w->signum - 1].head)
3502 {
3503#if EV_MULTIPLICITY
3504 signals [w->signum - 1].loop = 0; /* unattach from signal */
3505#endif
3506#if EV_USE_SIGNALFD
3507 if (sigfd >= 0)
3508 {
3509 sigset_t ss;
3510
3511 sigemptyset (&ss);
3512 sigaddset (&ss, w->signum);
3513 sigdelset (&sigfd_set, w->signum);
3514
3515 signalfd (sigfd, &sigfd_set, 0);
3516 sigprocmask (SIG_UNBLOCK, &ss, 0);
3517 }
3518 else
3519#endif
2626 signal (w->signum, SIG_DFL); 3520 signal (w->signum, SIG_DFL);
3521 }
2627 3522
2628 EV_FREQUENT_CHECK; 3523 EV_FREQUENT_CHECK;
2629} 3524}
3525
3526#endif
3527
3528#if EV_CHILD_ENABLE
2630 3529
2631void 3530void
2632ev_child_start (EV_P_ ev_child *w) 3531ev_child_start (EV_P_ ev_child *w)
2633{ 3532{
2634#if EV_MULTIPLICITY 3533#if EV_MULTIPLICITY
… …
2638 return; 3537 return;
2639 3538
2640 EV_FREQUENT_CHECK; 3539 EV_FREQUENT_CHECK;
2641 3540
2642 ev_start (EV_A_ (W)w, 1); 3541 ev_start (EV_A_ (W)w, 1);
2643 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3542 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2644 3543
2645 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
2646} 3545}
2647 3546
2648void 3547void
… …
2652 if (expect_false (!ev_is_active (w))) 3551 if (expect_false (!ev_is_active (w)))
2653 return; 3552 return;
2654 3553
2655 EV_FREQUENT_CHECK; 3554 EV_FREQUENT_CHECK;
2656 3555
2657 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3556 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2658 ev_stop (EV_A_ (W)w); 3557 ev_stop (EV_A_ (W)w);
2659 3558
2660 EV_FREQUENT_CHECK; 3559 EV_FREQUENT_CHECK;
2661} 3560}
3561
3562#endif
2662 3563
2663#if EV_STAT_ENABLE 3564#if EV_STAT_ENABLE
2664 3565
2665# ifdef _WIN32 3566# ifdef _WIN32
2666# undef lstat 3567# undef lstat
… …
2672#define MIN_STAT_INTERVAL 0.1074891 3573#define MIN_STAT_INTERVAL 0.1074891
2673 3574
2674static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3575static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2675 3576
2676#if EV_USE_INOTIFY 3577#if EV_USE_INOTIFY
2677# define EV_INOTIFY_BUFSIZE 8192 3578
3579/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3580# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2678 3581
2679static void noinline 3582static void noinline
2680infy_add (EV_P_ ev_stat *w) 3583infy_add (EV_P_ ev_stat *w)
2681{ 3584{
2682 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); 3585 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);
2683 3586
2684 if (w->wd < 0) 3587 if (w->wd >= 0)
3588 {
3589 struct statfs sfs;
3590
3591 /* now local changes will be tracked by inotify, but remote changes won't */
3592 /* unless the filesystem is known to be local, we therefore still poll */
3593 /* also do poll on <2.6.25, but with normal frequency */
3594
3595 if (!fs_2625)
3596 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3597 else if (!statfs (w->path, &sfs)
3598 && (sfs.f_type == 0x1373 /* devfs */
3599 || sfs.f_type == 0xEF53 /* ext2/3 */
3600 || sfs.f_type == 0x3153464a /* jfs */
3601 || sfs.f_type == 0x52654973 /* reiser3 */
3602 || sfs.f_type == 0x01021994 /* tempfs */
3603 || sfs.f_type == 0x58465342 /* xfs */))
3604 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3605 else
3606 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2685 { 3607 }
3608 else
3609 {
3610 /* can't use inotify, continue to stat */
2686 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3611 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2687 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2688 3612
2689 /* monitor some parent directory for speedup hints */ 3613 /* if path is not there, monitor some parent directory for speedup hints */
2690 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3614 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2691 /* but an efficiency issue only */ 3615 /* but an efficiency issue only */
2692 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3616 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2693 { 3617 {
2694 char path [4096]; 3618 char path [4096];
… …
2704 if (!pend || pend == path) 3628 if (!pend || pend == path)
2705 break; 3629 break;
2706 3630
2707 *pend = 0; 3631 *pend = 0;
2708 w->wd = inotify_add_watch (fs_fd, path, mask); 3632 w->wd = inotify_add_watch (fs_fd, path, mask);
2709 } 3633 }
2710 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3634 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2711 } 3635 }
2712 } 3636 }
2713 3637
2714 if (w->wd >= 0) 3638 if (w->wd >= 0)
2715 {
2716 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3639 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2717 3640
2718 /* now local changes will be tracked by inotify, but remote changes won't */ 3641 /* now re-arm timer, if required */
2719 /* unless the filesystem it known to be local, we therefore still poll */ 3642 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2720 /* also do poll on <2.6.25, but with normal frequency */
2721 struct statfs sfs;
2722
2723 if (fs_2625 && !statfs (w->path, &sfs))
2724 if (sfs.f_type == 0x1373 /* devfs */
2725 || sfs.f_type == 0xEF53 /* ext2/3 */
2726 || sfs.f_type == 0x3153464a /* jfs */
2727 || sfs.f_type == 0x52654973 /* reiser3 */
2728 || sfs.f_type == 0x01021994 /* tempfs */
2729 || sfs.f_type == 0x58465342 /* xfs */)
2730 return;
2731
2732 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2733 ev_timer_again (EV_A_ &w->timer); 3643 ev_timer_again (EV_A_ &w->timer);
2734 } 3644 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2735} 3645}
2736 3646
2737static void noinline 3647static void noinline
2738infy_del (EV_P_ ev_stat *w) 3648infy_del (EV_P_ ev_stat *w)
2739{ 3649{
… …
2742 3652
2743 if (wd < 0) 3653 if (wd < 0)
2744 return; 3654 return;
2745 3655
2746 w->wd = -2; 3656 w->wd = -2;
2747 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3657 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2748 wlist_del (&fs_hash [slot].head, (WL)w); 3658 wlist_del (&fs_hash [slot].head, (WL)w);
2749 3659
2750 /* remove this watcher, if others are watching it, they will rearm */ 3660 /* remove this watcher, if others are watching it, they will rearm */
2751 inotify_rm_watch (fs_fd, wd); 3661 inotify_rm_watch (fs_fd, wd);
2752} 3662}
… …
2754static void noinline 3664static void noinline
2755infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3665infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2756{ 3666{
2757 if (slot < 0) 3667 if (slot < 0)
2758 /* overflow, need to check for all hash slots */ 3668 /* overflow, need to check for all hash slots */
2759 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3669 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2760 infy_wd (EV_A_ slot, wd, ev); 3670 infy_wd (EV_A_ slot, wd, ev);
2761 else 3671 else
2762 { 3672 {
2763 WL w_; 3673 WL w_;
2764 3674
2765 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3675 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2766 { 3676 {
2767 ev_stat *w = (ev_stat *)w_; 3677 ev_stat *w = (ev_stat *)w_;
2768 w_ = w_->next; /* lets us remove this watcher and all before it */ 3678 w_ = w_->next; /* lets us remove this watcher and all before it */
2769 3679
2770 if (w->wd == wd || wd == -1) 3680 if (w->wd == wd || wd == -1)
2771 { 3681 {
2772 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3682 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2773 { 3683 {
2774 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3684 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2775 w->wd = -1; 3685 w->wd = -1;
2776 infy_add (EV_A_ w); /* re-add, no matter what */ 3686 infy_add (EV_A_ w); /* re-add, no matter what */
2777 } 3687 }
2778 3688
2779 stat_timer_cb (EV_A_ &w->timer, 0); 3689 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2784 3694
2785static void 3695static void
2786infy_cb (EV_P_ ev_io *w, int revents) 3696infy_cb (EV_P_ ev_io *w, int revents)
2787{ 3697{
2788 char buf [EV_INOTIFY_BUFSIZE]; 3698 char buf [EV_INOTIFY_BUFSIZE];
2789 struct inotify_event *ev = (struct inotify_event *)buf;
2790 int ofs; 3699 int ofs;
2791 int len = read (fs_fd, buf, sizeof (buf)); 3700 int len = read (fs_fd, buf, sizeof (buf));
2792 3701
2793 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3702 for (ofs = 0; ofs < len; )
3703 {
3704 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2794 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3705 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3706 ofs += sizeof (struct inotify_event) + ev->len;
3707 }
2795} 3708}
2796 3709
2797inline_size void 3710inline_size void ecb_cold
2798check_2625 (EV_P) 3711ev_check_2625 (EV_P)
2799{ 3712{
2800 /* kernels < 2.6.25 are borked 3713 /* kernels < 2.6.25 are borked
2801 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3714 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2802 */ 3715 */
2803 struct utsname buf; 3716 if (ev_linux_version () < 0x020619)
2804 int major, minor, micro;
2805
2806 if (uname (&buf))
2807 return; 3717 return;
2808 3718
2809 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2810 return;
2811
2812 if (major < 2
2813 || (major == 2 && minor < 6)
2814 || (major == 2 && minor == 6 && micro < 25))
2815 return;
2816
2817 fs_2625 = 1; 3719 fs_2625 = 1;
3720}
3721
3722inline_size int
3723infy_newfd (void)
3724{
3725#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3726 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3727 if (fd >= 0)
3728 return fd;
3729#endif
3730 return inotify_init ();
2818} 3731}
2819 3732
2820inline_size void 3733inline_size void
2821infy_init (EV_P) 3734infy_init (EV_P)
2822{ 3735{
2823 if (fs_fd != -2) 3736 if (fs_fd != -2)
2824 return; 3737 return;
2825 3738
2826 fs_fd = -1; 3739 fs_fd = -1;
2827 3740
2828 check_2625 (EV_A); 3741 ev_check_2625 (EV_A);
2829 3742
2830 fs_fd = inotify_init (); 3743 fs_fd = infy_newfd ();
2831 3744
2832 if (fs_fd >= 0) 3745 if (fs_fd >= 0)
2833 { 3746 {
3747 fd_intern (fs_fd);
2834 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3748 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2835 ev_set_priority (&fs_w, EV_MAXPRI); 3749 ev_set_priority (&fs_w, EV_MAXPRI);
2836 ev_io_start (EV_A_ &fs_w); 3750 ev_io_start (EV_A_ &fs_w);
3751 ev_unref (EV_A);
2837 } 3752 }
2838} 3753}
2839 3754
2840inline_size void 3755inline_size void
2841infy_fork (EV_P) 3756infy_fork (EV_P)
… …
2843 int slot; 3758 int slot;
2844 3759
2845 if (fs_fd < 0) 3760 if (fs_fd < 0)
2846 return; 3761 return;
2847 3762
3763 ev_ref (EV_A);
3764 ev_io_stop (EV_A_ &fs_w);
2848 close (fs_fd); 3765 close (fs_fd);
2849 fs_fd = inotify_init (); 3766 fs_fd = infy_newfd ();
2850 3767
3768 if (fs_fd >= 0)
3769 {
3770 fd_intern (fs_fd);
3771 ev_io_set (&fs_w, fs_fd, EV_READ);
3772 ev_io_start (EV_A_ &fs_w);
3773 ev_unref (EV_A);
3774 }
3775
2851 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3776 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2852 { 3777 {
2853 WL w_ = fs_hash [slot].head; 3778 WL w_ = fs_hash [slot].head;
2854 fs_hash [slot].head = 0; 3779 fs_hash [slot].head = 0;
2855 3780
2856 while (w_) 3781 while (w_)
… …
2861 w->wd = -1; 3786 w->wd = -1;
2862 3787
2863 if (fs_fd >= 0) 3788 if (fs_fd >= 0)
2864 infy_add (EV_A_ w); /* re-add, no matter what */ 3789 infy_add (EV_A_ w); /* re-add, no matter what */
2865 else 3790 else
3791 {
3792 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3793 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2866 ev_timer_again (EV_A_ &w->timer); 3794 ev_timer_again (EV_A_ &w->timer);
3795 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3796 }
2867 } 3797 }
2868 } 3798 }
2869} 3799}
2870 3800
2871#endif 3801#endif
… …
2888static void noinline 3818static void noinline
2889stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3819stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2890{ 3820{
2891 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3821 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2892 3822
2893 /* we copy this here each the time so that */ 3823 ev_statdata prev = w->attr;
2894 /* prev has the old value when the callback gets invoked */
2895 w->prev = w->attr;
2896 ev_stat_stat (EV_A_ w); 3824 ev_stat_stat (EV_A_ w);
2897 3825
2898 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3826 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2899 if ( 3827 if (
2900 w->prev.st_dev != w->attr.st_dev 3828 prev.st_dev != w->attr.st_dev
2901 || w->prev.st_ino != w->attr.st_ino 3829 || prev.st_ino != w->attr.st_ino
2902 || w->prev.st_mode != w->attr.st_mode 3830 || prev.st_mode != w->attr.st_mode
2903 || w->prev.st_nlink != w->attr.st_nlink 3831 || prev.st_nlink != w->attr.st_nlink
2904 || w->prev.st_uid != w->attr.st_uid 3832 || prev.st_uid != w->attr.st_uid
2905 || w->prev.st_gid != w->attr.st_gid 3833 || prev.st_gid != w->attr.st_gid
2906 || w->prev.st_rdev != w->attr.st_rdev 3834 || prev.st_rdev != w->attr.st_rdev
2907 || w->prev.st_size != w->attr.st_size 3835 || prev.st_size != w->attr.st_size
2908 || w->prev.st_atime != w->attr.st_atime 3836 || prev.st_atime != w->attr.st_atime
2909 || w->prev.st_mtime != w->attr.st_mtime 3837 || prev.st_mtime != w->attr.st_mtime
2910 || w->prev.st_ctime != w->attr.st_ctime 3838 || prev.st_ctime != w->attr.st_ctime
2911 ) { 3839 ) {
3840 /* we only update w->prev on actual differences */
3841 /* in case we test more often than invoke the callback, */
3842 /* to ensure that prev is always different to attr */
3843 w->prev = prev;
3844
2912 #if EV_USE_INOTIFY 3845 #if EV_USE_INOTIFY
2913 if (fs_fd >= 0) 3846 if (fs_fd >= 0)
2914 { 3847 {
2915 infy_del (EV_A_ w); 3848 infy_del (EV_A_ w);
2916 infy_add (EV_A_ w); 3849 infy_add (EV_A_ w);
… …
2941 3874
2942 if (fs_fd >= 0) 3875 if (fs_fd >= 0)
2943 infy_add (EV_A_ w); 3876 infy_add (EV_A_ w);
2944 else 3877 else
2945#endif 3878#endif
3879 {
2946 ev_timer_again (EV_A_ &w->timer); 3880 ev_timer_again (EV_A_ &w->timer);
3881 ev_unref (EV_A);
3882 }
2947 3883
2948 ev_start (EV_A_ (W)w, 1); 3884 ev_start (EV_A_ (W)w, 1);
2949 3885
2950 EV_FREQUENT_CHECK; 3886 EV_FREQUENT_CHECK;
2951} 3887}
… …
2960 EV_FREQUENT_CHECK; 3896 EV_FREQUENT_CHECK;
2961 3897
2962#if EV_USE_INOTIFY 3898#if EV_USE_INOTIFY
2963 infy_del (EV_A_ w); 3899 infy_del (EV_A_ w);
2964#endif 3900#endif
3901
3902 if (ev_is_active (&w->timer))
3903 {
3904 ev_ref (EV_A);
2965 ev_timer_stop (EV_A_ &w->timer); 3905 ev_timer_stop (EV_A_ &w->timer);
3906 }
2966 3907
2967 ev_stop (EV_A_ (W)w); 3908 ev_stop (EV_A_ (W)w);
2968 3909
2969 EV_FREQUENT_CHECK; 3910 EV_FREQUENT_CHECK;
2970} 3911}
… …
3015 3956
3016 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
3017} 3958}
3018#endif 3959#endif
3019 3960
3961#if EV_PREPARE_ENABLE
3020void 3962void
3021ev_prepare_start (EV_P_ ev_prepare *w) 3963ev_prepare_start (EV_P_ ev_prepare *w)
3022{ 3964{
3023 if (expect_false (ev_is_active (w))) 3965 if (expect_false (ev_is_active (w)))
3024 return; 3966 return;
… …
3050 3992
3051 ev_stop (EV_A_ (W)w); 3993 ev_stop (EV_A_ (W)w);
3052 3994
3053 EV_FREQUENT_CHECK; 3995 EV_FREQUENT_CHECK;
3054} 3996}
3997#endif
3055 3998
3999#if EV_CHECK_ENABLE
3056void 4000void
3057ev_check_start (EV_P_ ev_check *w) 4001ev_check_start (EV_P_ ev_check *w)
3058{ 4002{
3059 if (expect_false (ev_is_active (w))) 4003 if (expect_false (ev_is_active (w)))
3060 return; 4004 return;
… …
3086 4030
3087 ev_stop (EV_A_ (W)w); 4031 ev_stop (EV_A_ (W)w);
3088 4032
3089 EV_FREQUENT_CHECK; 4033 EV_FREQUENT_CHECK;
3090} 4034}
4035#endif
3091 4036
3092#if EV_EMBED_ENABLE 4037#if EV_EMBED_ENABLE
3093void noinline 4038void noinline
3094ev_embed_sweep (EV_P_ ev_embed *w) 4039ev_embed_sweep (EV_P_ ev_embed *w)
3095{ 4040{
3096 ev_loop (w->other, EVLOOP_NONBLOCK); 4041 ev_run (w->other, EVRUN_NOWAIT);
3097} 4042}
3098 4043
3099static void 4044static void
3100embed_io_cb (EV_P_ ev_io *io, int revents) 4045embed_io_cb (EV_P_ ev_io *io, int revents)
3101{ 4046{
3102 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4047 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3103 4048
3104 if (ev_cb (w)) 4049 if (ev_cb (w))
3105 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4050 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3106 else 4051 else
3107 ev_loop (w->other, EVLOOP_NONBLOCK); 4052 ev_run (w->other, EVRUN_NOWAIT);
3108} 4053}
3109 4054
3110static void 4055static void
3111embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4056embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3112{ 4057{
3113 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4058 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3114 4059
3115 { 4060 {
3116 struct ev_loop *loop = w->other; 4061 EV_P = w->other;
3117 4062
3118 while (fdchangecnt) 4063 while (fdchangecnt)
3119 { 4064 {
3120 fd_reify (EV_A); 4065 fd_reify (EV_A);
3121 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4066 ev_run (EV_A_ EVRUN_NOWAIT);
3122 } 4067 }
3123 } 4068 }
3124} 4069}
3125 4070
3126static void 4071static void
… …
3129 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4074 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3130 4075
3131 ev_embed_stop (EV_A_ w); 4076 ev_embed_stop (EV_A_ w);
3132 4077
3133 { 4078 {
3134 struct ev_loop *loop = w->other; 4079 EV_P = w->other;
3135 4080
3136 ev_loop_fork (EV_A); 4081 ev_loop_fork (EV_A);
3137 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4082 ev_run (EV_A_ EVRUN_NOWAIT);
3138 } 4083 }
3139 4084
3140 ev_embed_start (EV_A_ w); 4085 ev_embed_start (EV_A_ w);
3141} 4086}
3142 4087
… …
3153{ 4098{
3154 if (expect_false (ev_is_active (w))) 4099 if (expect_false (ev_is_active (w)))
3155 return; 4100 return;
3156 4101
3157 { 4102 {
3158 struct ev_loop *loop = w->other; 4103 EV_P = w->other;
3159 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4104 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3160 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4105 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3161 } 4106 }
3162 4107
3163 EV_FREQUENT_CHECK; 4108 EV_FREQUENT_CHECK;
… …
3190 4135
3191 ev_io_stop (EV_A_ &w->io); 4136 ev_io_stop (EV_A_ &w->io);
3192 ev_prepare_stop (EV_A_ &w->prepare); 4137 ev_prepare_stop (EV_A_ &w->prepare);
3193 ev_fork_stop (EV_A_ &w->fork); 4138 ev_fork_stop (EV_A_ &w->fork);
3194 4139
4140 ev_stop (EV_A_ (W)w);
4141
3195 EV_FREQUENT_CHECK; 4142 EV_FREQUENT_CHECK;
3196} 4143}
3197#endif 4144#endif
3198 4145
3199#if EV_FORK_ENABLE 4146#if EV_FORK_ENABLE
… …
3232 4179
3233 EV_FREQUENT_CHECK; 4180 EV_FREQUENT_CHECK;
3234} 4181}
3235#endif 4182#endif
3236 4183
4184#if EV_CLEANUP_ENABLE
4185void
4186ev_cleanup_start (EV_P_ ev_cleanup *w)
4187{
4188 if (expect_false (ev_is_active (w)))
4189 return;
4190
4191 EV_FREQUENT_CHECK;
4192
4193 ev_start (EV_A_ (W)w, ++cleanupcnt);
4194 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4195 cleanups [cleanupcnt - 1] = w;
4196
4197 /* cleanup watchers should never keep a refcount on the loop */
4198 ev_unref (EV_A);
4199 EV_FREQUENT_CHECK;
4200}
4201
4202void
4203ev_cleanup_stop (EV_P_ ev_cleanup *w)
4204{
4205 clear_pending (EV_A_ (W)w);
4206 if (expect_false (!ev_is_active (w)))
4207 return;
4208
4209 EV_FREQUENT_CHECK;
4210 ev_ref (EV_A);
4211
4212 {
4213 int active = ev_active (w);
4214
4215 cleanups [active - 1] = cleanups [--cleanupcnt];
4216 ev_active (cleanups [active - 1]) = active;
4217 }
4218
4219 ev_stop (EV_A_ (W)w);
4220
4221 EV_FREQUENT_CHECK;
4222}
4223#endif
4224
3237#if EV_ASYNC_ENABLE 4225#if EV_ASYNC_ENABLE
3238void 4226void
3239ev_async_start (EV_P_ ev_async *w) 4227ev_async_start (EV_P_ ev_async *w)
3240{ 4228{
3241 if (expect_false (ev_is_active (w))) 4229 if (expect_false (ev_is_active (w)))
3242 return; 4230 return;
3243 4231
4232 w->sent = 0;
4233
3244 evpipe_init (EV_A); 4234 evpipe_init (EV_A);
3245 4235
3246 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3247 4237
3248 ev_start (EV_A_ (W)w, ++asynccnt); 4238 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3275 4265
3276void 4266void
3277ev_async_send (EV_P_ ev_async *w) 4267ev_async_send (EV_P_ ev_async *w)
3278{ 4268{
3279 w->sent = 1; 4269 w->sent = 1;
3280 evpipe_write (EV_A_ &gotasync); 4270 evpipe_write (EV_A_ &async_pending);
3281} 4271}
3282#endif 4272#endif
3283 4273
3284/*****************************************************************************/ 4274/*****************************************************************************/
3285 4275
… …
3325{ 4315{
3326 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4316 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3327 4317
3328 if (expect_false (!once)) 4318 if (expect_false (!once))
3329 { 4319 {
3330 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4320 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3331 return; 4321 return;
3332 } 4322 }
3333 4323
3334 once->cb = cb; 4324 once->cb = cb;
3335 once->arg = arg; 4325 once->arg = arg;
… …
3350} 4340}
3351 4341
3352/*****************************************************************************/ 4342/*****************************************************************************/
3353 4343
3354#if EV_WALK_ENABLE 4344#if EV_WALK_ENABLE
3355void 4345void ecb_cold
3356ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4346ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3357{ 4347{
3358 int i, j; 4348 int i, j;
3359 ev_watcher_list *wl, *wn; 4349 ev_watcher_list *wl, *wn;
3360 4350
… …
3404 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4394 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3405#endif 4395#endif
3406 4396
3407#if EV_IDLE_ENABLE 4397#if EV_IDLE_ENABLE
3408 if (types & EV_IDLE) 4398 if (types & EV_IDLE)
3409 for (j = NUMPRI; i--; ) 4399 for (j = NUMPRI; j--; )
3410 for (i = idlecnt [j]; i--; ) 4400 for (i = idlecnt [j]; i--; )
3411 cb (EV_A_ EV_IDLE, idles [j][i]); 4401 cb (EV_A_ EV_IDLE, idles [j][i]);
3412#endif 4402#endif
3413 4403
3414#if EV_FORK_ENABLE 4404#if EV_FORK_ENABLE
… …
3422 if (types & EV_ASYNC) 4412 if (types & EV_ASYNC)
3423 for (i = asynccnt; i--; ) 4413 for (i = asynccnt; i--; )
3424 cb (EV_A_ EV_ASYNC, asyncs [i]); 4414 cb (EV_A_ EV_ASYNC, asyncs [i]);
3425#endif 4415#endif
3426 4416
4417#if EV_PREPARE_ENABLE
3427 if (types & EV_PREPARE) 4418 if (types & EV_PREPARE)
3428 for (i = preparecnt; i--; ) 4419 for (i = preparecnt; i--; )
3429#if EV_EMBED_ENABLE 4420# if EV_EMBED_ENABLE
3430 if (ev_cb (prepares [i]) != embed_prepare_cb) 4421 if (ev_cb (prepares [i]) != embed_prepare_cb)
3431#endif 4422# endif
3432 cb (EV_A_ EV_PREPARE, prepares [i]); 4423 cb (EV_A_ EV_PREPARE, prepares [i]);
4424#endif
3433 4425
4426#if EV_CHECK_ENABLE
3434 if (types & EV_CHECK) 4427 if (types & EV_CHECK)
3435 for (i = checkcnt; i--; ) 4428 for (i = checkcnt; i--; )
3436 cb (EV_A_ EV_CHECK, checks [i]); 4429 cb (EV_A_ EV_CHECK, checks [i]);
4430#endif
3437 4431
4432#if EV_SIGNAL_ENABLE
3438 if (types & EV_SIGNAL) 4433 if (types & EV_SIGNAL)
3439 for (i = 0; i < signalmax; ++i) 4434 for (i = 0; i < EV_NSIG - 1; ++i)
3440 for (wl = signals [i].head; wl; ) 4435 for (wl = signals [i].head; wl; )
3441 { 4436 {
3442 wn = wl->next; 4437 wn = wl->next;
3443 cb (EV_A_ EV_SIGNAL, wl); 4438 cb (EV_A_ EV_SIGNAL, wl);
3444 wl = wn; 4439 wl = wn;
3445 } 4440 }
4441#endif
3446 4442
4443#if EV_CHILD_ENABLE
3447 if (types & EV_CHILD) 4444 if (types & EV_CHILD)
3448 for (i = EV_PID_HASHSIZE; i--; ) 4445 for (i = (EV_PID_HASHSIZE); i--; )
3449 for (wl = childs [i]; wl; ) 4446 for (wl = childs [i]; wl; )
3450 { 4447 {
3451 wn = wl->next; 4448 wn = wl->next;
3452 cb (EV_A_ EV_CHILD, wl); 4449 cb (EV_A_ EV_CHILD, wl);
3453 wl = wn; 4450 wl = wn;
3454 } 4451 }
4452#endif
3455/* EV_STAT 0x00001000 /* stat data changed */ 4453/* EV_STAT 0x00001000 /* stat data changed */
3456/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4454/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3457} 4455}
3458#endif 4456#endif
3459 4457
3460#if EV_MULTIPLICITY 4458#if EV_MULTIPLICITY
3461 #include "ev_wrap.h" 4459 #include "ev_wrap.h"
3462#endif 4460#endif
3463 4461
3464#ifdef __cplusplus
3465}
3466#endif
3467

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