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Comparing libev/ev.c (file contents):
Revision 1.313 by root, Wed Aug 19 23:44:51 2009 UTC vs.
Revision 1.405 by root, Wed Jan 18 12:51:41 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
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
… …
182# define WIN32_LEAN_AND_MEAN 194# define WIN32_LEAN_AND_MEAN
183# include <windows.h> 195# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 196# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 197# define EV_SELECT_IS_WINSOCKET 1
186# endif 198# endif
199# undef EV_AVOID_STDIO
187#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
188 209
189/* 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 */
190 211
191/* try to deduce the maximum number of signals on this platform */ 212/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 213#if defined (EV_NSIG)
… …
204#elif defined (MAXSIG) 225#elif defined (MAXSIG)
205# define EV_NSIG (MAXSIG+1) 226# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 227#elif defined (MAX_SIG)
207# define EV_NSIG (MAX_SIG+1) 228# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 229#elif defined (SIGARRAYSIZE)
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 231#elif defined (_sys_nsig)
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 233#else
213# error "unable to find value for NSIG, please report" 234# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */ 235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
215# define EV_NSIG 65 237# define EV_NSIG 65
238#endif
239
240#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0
216#endif 242#endif
217 243
218#ifndef EV_USE_CLOCK_SYSCALL 244#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 245# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1 246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 247# else
222# define EV_USE_CLOCK_SYSCALL 0 248# define EV_USE_CLOCK_SYSCALL 0
223# endif 249# endif
224#endif 250#endif
225 251
226#ifndef EV_USE_MONOTONIC 252#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 254# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 255# else
230# define EV_USE_MONOTONIC 0 256# define EV_USE_MONOTONIC 0
231# endif 257# endif
232#endif 258#endif
233 259
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 261# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 262#endif
237 263
238#ifndef EV_USE_NANOSLEEP 264#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 265# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 266# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 267# else
242# define EV_USE_NANOSLEEP 0 268# define EV_USE_NANOSLEEP 0
243# endif 269# endif
244#endif 270#endif
245 271
246#ifndef EV_USE_SELECT 272#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 273# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 274#endif
249 275
250#ifndef EV_USE_POLL 276#ifndef EV_USE_POLL
251# ifdef _WIN32 277# ifdef _WIN32
252# define EV_USE_POLL 0 278# define EV_USE_POLL 0
253# else 279# else
254# define EV_USE_POLL 1 280# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 281# endif
256#endif 282#endif
257 283
258#ifndef EV_USE_EPOLL 284#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 285# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 286# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 287# else
262# define EV_USE_EPOLL 0 288# define EV_USE_EPOLL 0
263# endif 289# endif
264#endif 290#endif
265 291
… …
271# define EV_USE_PORT 0 297# define EV_USE_PORT 0
272#endif 298#endif
273 299
274#ifndef EV_USE_INOTIFY 300#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 302# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 303# else
278# define EV_USE_INOTIFY 0 304# define EV_USE_INOTIFY 0
279# endif 305# endif
280#endif 306#endif
281 307
282#ifndef EV_PID_HASHSIZE 308#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 309# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 310#endif
289 311
290#ifndef EV_INOTIFY_HASHSIZE 312#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 313# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 314#endif
297 315
298#ifndef EV_USE_EVENTFD 316#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 317# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 318# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 319# else
302# define EV_USE_EVENTFD 0 320# define EV_USE_EVENTFD 0
303# endif 321# endif
304#endif 322#endif
305 323
306#ifndef EV_USE_SIGNALFD 324#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 325# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 326# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 327# else
310# define EV_USE_SIGNALFD 0 328# define EV_USE_SIGNALFD 0
311# endif 329# endif
312#endif 330#endif
313 331
… …
316# define EV_USE_4HEAP 1 334# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 335# define EV_HEAP_CACHE_AT 1
318#endif 336#endif
319 337
320#ifndef EV_VERIFY 338#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 339# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 340#endif
323 341
324#ifndef EV_USE_4HEAP 342#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 343# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 344#endif
327 345
328#ifndef EV_HEAP_CACHE_AT 346#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
330#endif 348#endif
331 349
332/* 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, */
333/* which makes programs even slower. might work on other unices, too. */ 351/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 352#if EV_USE_CLOCK_SYSCALL
… …
343# endif 361# endif
344#endif 362#endif
345 363
346/* 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 */
347 365
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
348#ifndef CLOCK_MONOTONIC 372#ifndef CLOCK_MONOTONIC
349# undef EV_USE_MONOTONIC 373# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 0 374# define EV_USE_MONOTONIC 0
351#endif 375#endif
352 376
… …
359# undef EV_USE_INOTIFY 383# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 384# define EV_USE_INOTIFY 0
361#endif 385#endif
362 386
363#if !EV_USE_NANOSLEEP 387#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 388/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux)
365# include <sys/select.h> 390# include <sys/select.h>
366# endif 391# endif
367#endif 392#endif
368 393
369#if EV_USE_INOTIFY 394#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 395# include <sys/statfs.h>
372# include <sys/inotify.h> 396# include <sys/inotify.h>
373/* 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 */
374# ifndef IN_DONT_FOLLOW 398# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 399# undef EV_USE_INOTIFY
… …
392# define EFD_CLOEXEC O_CLOEXEC 416# define EFD_CLOEXEC O_CLOEXEC
393# else 417# else
394# define EFD_CLOEXEC 02000000 418# define EFD_CLOEXEC 02000000
395# endif 419# endif
396# endif 420# endif
397# ifdef __cplusplus 421EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
398extern "C" { 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
399# endif 429# endif
400int eventfd (unsigned int initval, int flags); 430# ifndef SFD_CLOEXEC
401# ifdef __cplusplus 431# ifdef O_CLOEXEC
402} 432# define SFD_CLOEXEC O_CLOEXEC
433# else
434# define SFD_CLOEXEC 02000000
435# endif
403# endif 436# endif
404#endif 437EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
405 438
406#if EV_USE_SIGNALFD 439struct signalfd_siginfo
407# include <sys/signalfd.h> 440{
441 uint32_t ssi_signo;
442 char pad[128 - sizeof (uint32_t)];
443};
408#endif 444#endif
409 445
410/**/ 446/**/
411 447
412#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
413# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
414#else 450#else
415# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
416#endif 452#endif
417 453
418/* 454/*
419 * This is used to avoid floating point rounding problems. 455 * This is used to work around floating point rounding problems.
420 * It is added to ev_rt_now when scheduling periodics
421 * to ensure progress, time-wise, even when rounding
422 * errors are against us.
423 * This value is good at least till the year 4000. 456 * This value is good at least till the year 4000.
424 * Better solutions welcome.
425 */ 457 */
426#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 */
427 460
428#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) */
429#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) */
430/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
431 463
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;
432#if __GNUC__ >= 4 508 #if __GNUC__
433# define expect(expr,value) __builtin_expect ((expr),(value)) 509 typedef signed long long int64_t;
434# 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
435#else 515#else
436# define expect(expr,value) (expr) 516 #include <inttypes.h>
437# define noinline
438# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
439# define inline
440# 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)))
441#endif 531 #endif
532#endif
442 533
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 #endif
566 #endif
567#endif
568
569#ifndef ECB_MEMORY_FENCE
570 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
571 #define ECB_MEMORY_FENCE __sync_synchronize ()
572 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
573 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
574 #elif _MSC_VER >= 1400 /* VC++ 2005 */
575 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
576 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
577 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
578 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
579 #elif defined(_WIN32)
580 #include <WinNT.h>
581 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
582 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
583 #include <mbarrier.h>
584 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
585 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
586 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if !ECB_AVOID_PTHREADS
592 /*
593 * if you get undefined symbol references to pthread_mutex_lock,
594 * or failure to find pthread.h, then you should implement
595 * the ECB_MEMORY_FENCE operations for your cpu/compiler
596 * OR provide pthread.h and link against the posix thread library
597 * of your system.
598 */
599 #include <pthread.h>
600 #define ECB_NEEDS_PTHREADS 1
601 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
602
603 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
604 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
605 #endif
606#endif
607
608#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
609 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
610#endif
611
612#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
613 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
614#endif
615
616/*****************************************************************************/
617
618#define ECB_C99 (__STDC_VERSION__ >= 199901L)
619
620#if __cplusplus
621 #define ecb_inline static inline
622#elif ECB_GCC_VERSION(2,5)
623 #define ecb_inline static __inline__
624#elif ECB_C99
625 #define ecb_inline static inline
626#else
627 #define ecb_inline static
628#endif
629
630#if ECB_GCC_VERSION(3,3)
631 #define ecb_restrict __restrict__
632#elif ECB_C99
633 #define ecb_restrict restrict
634#else
635 #define ecb_restrict
636#endif
637
638typedef int ecb_bool;
639
640#define ECB_CONCAT_(a, b) a ## b
641#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
642#define ECB_STRINGIFY_(a) # a
643#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
644
645#define ecb_function_ ecb_inline
646
647#if ECB_GCC_VERSION(3,1)
648 #define ecb_attribute(attrlist) __attribute__(attrlist)
649 #define ecb_is_constant(expr) __builtin_constant_p (expr)
650 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
651 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
652#else
653 #define ecb_attribute(attrlist)
654 #define ecb_is_constant(expr) 0
655 #define ecb_expect(expr,value) (expr)
656 #define ecb_prefetch(addr,rw,locality)
657#endif
658
659/* no emulation for ecb_decltype */
660#if ECB_GCC_VERSION(4,5)
661 #define ecb_decltype(x) __decltype(x)
662#elif ECB_GCC_VERSION(3,0)
663 #define ecb_decltype(x) __typeof(x)
664#endif
665
666#define ecb_noinline ecb_attribute ((__noinline__))
667#define ecb_noreturn ecb_attribute ((__noreturn__))
668#define ecb_unused ecb_attribute ((__unused__))
669#define ecb_const ecb_attribute ((__const__))
670#define ecb_pure ecb_attribute ((__pure__))
671
672#if ECB_GCC_VERSION(4,3)
673 #define ecb_artificial ecb_attribute ((__artificial__))
674 #define ecb_hot ecb_attribute ((__hot__))
675 #define ecb_cold ecb_attribute ((__cold__))
676#else
677 #define ecb_artificial
678 #define ecb_hot
679 #define ecb_cold
680#endif
681
682/* put around conditional expressions if you are very sure that the */
683/* expression is mostly true or mostly false. note that these return */
684/* booleans, not the expression. */
443#define expect_false(expr) expect ((expr) != 0, 0) 685#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
444#define expect_true(expr) expect ((expr) != 0, 1) 686#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
687/* for compatibility to the rest of the world */
688#define ecb_likely(expr) ecb_expect_true (expr)
689#define ecb_unlikely(expr) ecb_expect_false (expr)
690
691/* count trailing zero bits and count # of one bits */
692#if ECB_GCC_VERSION(3,4)
693 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
694 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
695 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
696 #define ecb_ctz32(x) __builtin_ctz (x)
697 #define ecb_ctz64(x) __builtin_ctzll (x)
698 #define ecb_popcount32(x) __builtin_popcount (x)
699 /* no popcountll */
700#else
701 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
702 ecb_function_ int
703 ecb_ctz32 (uint32_t x)
704 {
705 int r = 0;
706
707 x &= ~x + 1; /* this isolates the lowest bit */
708
709#if ECB_branchless_on_i386
710 r += !!(x & 0xaaaaaaaa) << 0;
711 r += !!(x & 0xcccccccc) << 1;
712 r += !!(x & 0xf0f0f0f0) << 2;
713 r += !!(x & 0xff00ff00) << 3;
714 r += !!(x & 0xffff0000) << 4;
715#else
716 if (x & 0xaaaaaaaa) r += 1;
717 if (x & 0xcccccccc) r += 2;
718 if (x & 0xf0f0f0f0) r += 4;
719 if (x & 0xff00ff00) r += 8;
720 if (x & 0xffff0000) r += 16;
721#endif
722
723 return r;
724 }
725
726 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
727 ecb_function_ int
728 ecb_ctz64 (uint64_t x)
729 {
730 int shift = x & 0xffffffffU ? 0 : 32;
731 return ecb_ctz32 (x >> shift) + shift;
732 }
733
734 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
735 ecb_function_ int
736 ecb_popcount32 (uint32_t x)
737 {
738 x -= (x >> 1) & 0x55555555;
739 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
740 x = ((x >> 4) + x) & 0x0f0f0f0f;
741 x *= 0x01010101;
742
743 return x >> 24;
744 }
745
746 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
747 ecb_function_ int ecb_ld32 (uint32_t x)
748 {
749 int r = 0;
750
751 if (x >> 16) { x >>= 16; r += 16; }
752 if (x >> 8) { x >>= 8; r += 8; }
753 if (x >> 4) { x >>= 4; r += 4; }
754 if (x >> 2) { x >>= 2; r += 2; }
755 if (x >> 1) { r += 1; }
756
757 return r;
758 }
759
760 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
761 ecb_function_ int ecb_ld64 (uint64_t x)
762 {
763 int r = 0;
764
765 if (x >> 32) { x >>= 32; r += 32; }
766
767 return r + ecb_ld32 (x);
768 }
769#endif
770
771ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
772ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
773{
774 return ( (x * 0x0802U & 0x22110U)
775 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
776}
777
778ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
779ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
780{
781 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
782 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
783 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
784 x = ( x >> 8 ) | ( x << 8);
785
786 return x;
787}
788
789ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
790ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
791{
792 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
793 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
794 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
795 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
796 x = ( x >> 16 ) | ( x << 16);
797
798 return x;
799}
800
801/* popcount64 is only available on 64 bit cpus as gcc builtin */
802/* so for this version we are lazy */
803ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
804ecb_function_ int
805ecb_popcount64 (uint64_t x)
806{
807 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
808}
809
810ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
811ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
812ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
813ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
814ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
815ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
816ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
817ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
818
819ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
820ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
821ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
822ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
823ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
824ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
825ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
826ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
827
828#if ECB_GCC_VERSION(4,3)
829 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
830 #define ecb_bswap32(x) __builtin_bswap32 (x)
831 #define ecb_bswap64(x) __builtin_bswap64 (x)
832#else
833 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
834 ecb_function_ uint16_t
835 ecb_bswap16 (uint16_t x)
836 {
837 return ecb_rotl16 (x, 8);
838 }
839
840 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
841 ecb_function_ uint32_t
842 ecb_bswap32 (uint32_t x)
843 {
844 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
845 }
846
847 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
848 ecb_function_ uint64_t
849 ecb_bswap64 (uint64_t x)
850 {
851 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
852 }
853#endif
854
855#if ECB_GCC_VERSION(4,5)
856 #define ecb_unreachable() __builtin_unreachable ()
857#else
858 /* this seems to work fine, but gcc always emits a warning for it :/ */
859 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
860 ecb_function_ void ecb_unreachable (void) { }
861#endif
862
863/* try to tell the compiler that some condition is definitely true */
864#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
865
866ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
867ecb_function_ unsigned char
868ecb_byteorder_helper (void)
869{
870 const uint32_t u = 0x11223344;
871 return *(unsigned char *)&u;
872}
873
874ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
875ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
876ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
877ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
878
879#if ECB_GCC_VERSION(3,0) || ECB_C99
880 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
881#else
882 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
883#endif
884
885#if __cplusplus
886 template<typename T>
887 static inline T ecb_div_rd (T val, T div)
888 {
889 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
890 }
891 template<typename T>
892 static inline T ecb_div_ru (T val, T div)
893 {
894 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
895 }
896#else
897 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
898 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
899#endif
900
901#if ecb_cplusplus_does_not_suck
902 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
903 template<typename T, int N>
904 static inline int ecb_array_length (const T (&arr)[N])
905 {
906 return N;
907 }
908#else
909 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
910#endif
911
912#endif
913
914/* ECB.H END */
915
916#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
917/* if your architecture doesn't need memory fences, e.g. because it is
918 * single-cpu/core, or if you use libev in a project that doesn't use libev
919 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
920 * libev, in which cases the memory fences become nops.
921 * alternatively, you can remove this #error and link against libpthread,
922 * which will then provide the memory fences.
923 */
924# error "memory fences not defined for your architecture, please report"
925#endif
926
927#ifndef ECB_MEMORY_FENCE
928# define ECB_MEMORY_FENCE do { } while (0)
929# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
930# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
931#endif
932
933#define expect_false(cond) ecb_expect_false (cond)
934#define expect_true(cond) ecb_expect_true (cond)
935#define noinline ecb_noinline
936
445#define inline_size static inline 937#define inline_size ecb_inline
446 938
447#if EV_MINIMAL 939#if EV_FEATURE_CODE
940# define inline_speed ecb_inline
941#else
448# define inline_speed static noinline 942# define inline_speed static noinline
449#else
450# define inline_speed static inline
451#endif 943#endif
452 944
453#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 945#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
454 946
455#if EV_MINPRI == EV_MAXPRI 947#if EV_MINPRI == EV_MAXPRI
… …
468#define ev_active(w) ((W)(w))->active 960#define ev_active(w) ((W)(w))->active
469#define ev_at(w) ((WT)(w))->at 961#define ev_at(w) ((WT)(w))->at
470 962
471#if EV_USE_REALTIME 963#if EV_USE_REALTIME
472/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 964/* sig_atomic_t is used to avoid per-thread variables or locking but still */
473/* giving it a reasonably high chance of working on typical architetcures */ 965/* giving it a reasonably high chance of working on typical architectures */
474static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 966static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
475#endif 967#endif
476 968
477#if EV_USE_MONOTONIC 969#if EV_USE_MONOTONIC
478static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 970static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
480 972
481#ifndef EV_FD_TO_WIN32_HANDLE 973#ifndef EV_FD_TO_WIN32_HANDLE
482# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 974# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
483#endif 975#endif
484#ifndef EV_WIN32_HANDLE_TO_FD 976#ifndef EV_WIN32_HANDLE_TO_FD
485# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 977# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
486#endif 978#endif
487#ifndef EV_WIN32_CLOSE_FD 979#ifndef EV_WIN32_CLOSE_FD
488# define EV_WIN32_CLOSE_FD(fd) close (fd) 980# define EV_WIN32_CLOSE_FD(fd) close (fd)
489#endif 981#endif
490 982
… …
492# include "ev_win32.c" 984# include "ev_win32.c"
493#endif 985#endif
494 986
495/*****************************************************************************/ 987/*****************************************************************************/
496 988
989/* define a suitable floor function (only used by periodics atm) */
990
991#if EV_USE_FLOOR
992# include <math.h>
993# define ev_floor(v) floor (v)
994#else
995
996#include <float.h>
997
998/* a floor() replacement function, should be independent of ev_tstamp type */
999static ev_tstamp noinline
1000ev_floor (ev_tstamp v)
1001{
1002 /* the choice of shift factor is not terribly important */
1003#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1004 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1005#else
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1007#endif
1008
1009 /* argument too large for an unsigned long? */
1010 if (expect_false (v >= shift))
1011 {
1012 ev_tstamp f;
1013
1014 if (v == v - 1.)
1015 return v; /* very large number */
1016
1017 f = shift * ev_floor (v * (1. / shift));
1018 return f + ev_floor (v - f);
1019 }
1020
1021 /* special treatment for negative args? */
1022 if (expect_false (v < 0.))
1023 {
1024 ev_tstamp f = -ev_floor (-v);
1025
1026 return f - (f == v ? 0 : 1);
1027 }
1028
1029 /* fits into an unsigned long */
1030 return (unsigned long)v;
1031}
1032
1033#endif
1034
1035/*****************************************************************************/
1036
1037#ifdef __linux
1038# include <sys/utsname.h>
1039#endif
1040
1041static unsigned int noinline ecb_cold
1042ev_linux_version (void)
1043{
1044#ifdef __linux
1045 unsigned int v = 0;
1046 struct utsname buf;
1047 int i;
1048 char *p = buf.release;
1049
1050 if (uname (&buf))
1051 return 0;
1052
1053 for (i = 3+1; --i; )
1054 {
1055 unsigned int c = 0;
1056
1057 for (;;)
1058 {
1059 if (*p >= '0' && *p <= '9')
1060 c = c * 10 + *p++ - '0';
1061 else
1062 {
1063 p += *p == '.';
1064 break;
1065 }
1066 }
1067
1068 v = (v << 8) | c;
1069 }
1070
1071 return v;
1072#else
1073 return 0;
1074#endif
1075}
1076
1077/*****************************************************************************/
1078
1079#if EV_AVOID_STDIO
1080static void noinline ecb_cold
1081ev_printerr (const char *msg)
1082{
1083 write (STDERR_FILENO, msg, strlen (msg));
1084}
1085#endif
1086
497static void (*syserr_cb)(const char *msg); 1087static void (*syserr_cb)(const char *msg);
498 1088
499void 1089void ecb_cold
500ev_set_syserr_cb (void (*cb)(const char *msg)) 1090ev_set_syserr_cb (void (*cb)(const char *msg))
501{ 1091{
502 syserr_cb = cb; 1092 syserr_cb = cb;
503} 1093}
504 1094
505static void noinline 1095static void noinline ecb_cold
506ev_syserr (const char *msg) 1096ev_syserr (const char *msg)
507{ 1097{
508 if (!msg) 1098 if (!msg)
509 msg = "(libev) system error"; 1099 msg = "(libev) system error";
510 1100
511 if (syserr_cb) 1101 if (syserr_cb)
512 syserr_cb (msg); 1102 syserr_cb (msg);
513 else 1103 else
514 { 1104 {
1105#if EV_AVOID_STDIO
1106 ev_printerr (msg);
1107 ev_printerr (": ");
1108 ev_printerr (strerror (errno));
1109 ev_printerr ("\n");
1110#else
515 perror (msg); 1111 perror (msg);
1112#endif
516 abort (); 1113 abort ();
517 } 1114 }
518} 1115}
519 1116
520static void * 1117static void *
521ev_realloc_emul (void *ptr, long size) 1118ev_realloc_emul (void *ptr, long size)
522{ 1119{
1120#if __GLIBC__
1121 return realloc (ptr, size);
1122#else
523 /* some systems, notably openbsd and darwin, fail to properly 1123 /* some systems, notably openbsd and darwin, fail to properly
524 * implement realloc (x, 0) (as required by both ansi c-98 and 1124 * implement realloc (x, 0) (as required by both ansi c-89 and
525 * the single unix specification, so work around them here. 1125 * the single unix specification, so work around them here.
526 */ 1126 */
527 1127
528 if (size) 1128 if (size)
529 return realloc (ptr, size); 1129 return realloc (ptr, size);
530 1130
531 free (ptr); 1131 free (ptr);
532 return 0; 1132 return 0;
1133#endif
533} 1134}
534 1135
535static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1136static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
536 1137
537void 1138void ecb_cold
538ev_set_allocator (void *(*cb)(void *ptr, long size)) 1139ev_set_allocator (void *(*cb)(void *ptr, long size))
539{ 1140{
540 alloc = cb; 1141 alloc = cb;
541} 1142}
542 1143
… …
545{ 1146{
546 ptr = alloc (ptr, size); 1147 ptr = alloc (ptr, size);
547 1148
548 if (!ptr && size) 1149 if (!ptr && size)
549 { 1150 {
1151#if EV_AVOID_STDIO
1152 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1153#else
550 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1154 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1155#endif
551 abort (); 1156 abort ();
552 } 1157 }
553 1158
554 return ptr; 1159 return ptr;
555} 1160}
… …
571 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1176 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
572 unsigned char unused; 1177 unsigned char unused;
573#if EV_USE_EPOLL 1178#if EV_USE_EPOLL
574 unsigned int egen; /* generation counter to counter epoll bugs */ 1179 unsigned int egen; /* generation counter to counter epoll bugs */
575#endif 1180#endif
576#if EV_SELECT_IS_WINSOCKET 1181#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
577 SOCKET handle; 1182 SOCKET handle;
1183#endif
1184#if EV_USE_IOCP
1185 OVERLAPPED or, ow;
578#endif 1186#endif
579} ANFD; 1187} ANFD;
580 1188
581/* stores the pending event set for a given watcher */ 1189/* stores the pending event set for a given watcher */
582typedef struct 1190typedef struct
… …
624 #undef VAR 1232 #undef VAR
625 }; 1233 };
626 #include "ev_wrap.h" 1234 #include "ev_wrap.h"
627 1235
628 static struct ev_loop default_loop_struct; 1236 static struct ev_loop default_loop_struct;
629 struct ev_loop *ev_default_loop_ptr; 1237 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
630 1238
631#else 1239#else
632 1240
633 ev_tstamp ev_rt_now; 1241 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
634 #define VAR(name,decl) static decl; 1242 #define VAR(name,decl) static decl;
635 #include "ev_vars.h" 1243 #include "ev_vars.h"
636 #undef VAR 1244 #undef VAR
637 1245
638 static int ev_default_loop_ptr; 1246 static int ev_default_loop_ptr;
639 1247
640#endif 1248#endif
641 1249
642#if EV_MINIMAL < 2 1250#if EV_FEATURE_API
643# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1251# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
644# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1252# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
645# define EV_INVOKE_PENDING invoke_cb (EV_A) 1253# define EV_INVOKE_PENDING invoke_cb (EV_A)
646#else 1254#else
647# define EV_RELEASE_CB (void)0 1255# define EV_RELEASE_CB (void)0
648# define EV_ACQUIRE_CB (void)0 1256# define EV_ACQUIRE_CB (void)0
649# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1257# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
650#endif 1258#endif
651 1259
652#define EVUNLOOP_RECURSE 0x80 1260#define EVBREAK_RECURSE 0x80
653 1261
654/*****************************************************************************/ 1262/*****************************************************************************/
655 1263
656#ifndef EV_HAVE_EV_TIME 1264#ifndef EV_HAVE_EV_TIME
657ev_tstamp 1265ev_tstamp
… …
701 if (delay > 0.) 1309 if (delay > 0.)
702 { 1310 {
703#if EV_USE_NANOSLEEP 1311#if EV_USE_NANOSLEEP
704 struct timespec ts; 1312 struct timespec ts;
705 1313
706 ts.tv_sec = (time_t)delay; 1314 EV_TS_SET (ts, delay);
707 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
708
709 nanosleep (&ts, 0); 1315 nanosleep (&ts, 0);
710#elif defined(_WIN32) 1316#elif defined(_WIN32)
711 Sleep ((unsigned long)(delay * 1e3)); 1317 Sleep ((unsigned long)(delay * 1e3));
712#else 1318#else
713 struct timeval tv; 1319 struct timeval tv;
714 1320
715 tv.tv_sec = (time_t)delay;
716 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
717
718 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1321 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
719 /* something not guaranteed by newer posix versions, but guaranteed */ 1322 /* something not guaranteed by newer posix versions, but guaranteed */
720 /* by older ones */ 1323 /* by older ones */
1324 EV_TV_SET (tv, delay);
721 select (0, 0, 0, 0, &tv); 1325 select (0, 0, 0, 0, &tv);
722#endif 1326#endif
723 } 1327 }
724} 1328}
725 1329
726/*****************************************************************************/ 1330/*****************************************************************************/
727 1331
728#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1332#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
729 1333
730/* find a suitable new size for the given array, */ 1334/* find a suitable new size for the given array, */
731/* hopefully by rounding to a ncie-to-malloc size */ 1335/* hopefully by rounding to a nice-to-malloc size */
732inline_size int 1336inline_size int
733array_nextsize (int elem, int cur, int cnt) 1337array_nextsize (int elem, int cur, int cnt)
734{ 1338{
735 int ncur = cur + 1; 1339 int ncur = cur + 1;
736 1340
737 do 1341 do
738 ncur <<= 1; 1342 ncur <<= 1;
739 while (cnt > ncur); 1343 while (cnt > ncur);
740 1344
741 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1345 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
742 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1346 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
743 { 1347 {
744 ncur *= elem; 1348 ncur *= elem;
745 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1349 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
746 ncur = ncur - sizeof (void *) * 4; 1350 ncur = ncur - sizeof (void *) * 4;
… …
748 } 1352 }
749 1353
750 return ncur; 1354 return ncur;
751} 1355}
752 1356
753static noinline void * 1357static void * noinline ecb_cold
754array_realloc (int elem, void *base, int *cur, int cnt) 1358array_realloc (int elem, void *base, int *cur, int cnt)
755{ 1359{
756 *cur = array_nextsize (elem, *cur, cnt); 1360 *cur = array_nextsize (elem, *cur, cnt);
757 return ev_realloc (base, elem * *cur); 1361 return ev_realloc (base, elem * *cur);
758} 1362}
… …
761 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1365 memset ((void *)(base), 0, sizeof (*(base)) * (count))
762 1366
763#define array_needsize(type,base,cur,cnt,init) \ 1367#define array_needsize(type,base,cur,cnt,init) \
764 if (expect_false ((cnt) > (cur))) \ 1368 if (expect_false ((cnt) > (cur))) \
765 { \ 1369 { \
766 int ocur_ = (cur); \ 1370 int ecb_unused ocur_ = (cur); \
767 (base) = (type *)array_realloc \ 1371 (base) = (type *)array_realloc \
768 (sizeof (type), (base), &(cur), (cnt)); \ 1372 (sizeof (type), (base), &(cur), (cnt)); \
769 init ((base) + (ocur_), (cur) - ocur_); \ 1373 init ((base) + (ocur_), (cur) - ocur_); \
770 } 1374 }
771 1375
… …
832} 1436}
833 1437
834/*****************************************************************************/ 1438/*****************************************************************************/
835 1439
836inline_speed void 1440inline_speed void
837fd_event_nc (EV_P_ int fd, int revents) 1441fd_event_nocheck (EV_P_ int fd, int revents)
838{ 1442{
839 ANFD *anfd = anfds + fd; 1443 ANFD *anfd = anfds + fd;
840 ev_io *w; 1444 ev_io *w;
841 1445
842 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1446 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
854fd_event (EV_P_ int fd, int revents) 1458fd_event (EV_P_ int fd, int revents)
855{ 1459{
856 ANFD *anfd = anfds + fd; 1460 ANFD *anfd = anfds + fd;
857 1461
858 if (expect_true (!anfd->reify)) 1462 if (expect_true (!anfd->reify))
859 fd_event_nc (EV_A_ fd, revents); 1463 fd_event_nocheck (EV_A_ fd, revents);
860} 1464}
861 1465
862void 1466void
863ev_feed_fd_event (EV_P_ int fd, int revents) 1467ev_feed_fd_event (EV_P_ int fd, int revents)
864{ 1468{
865 if (fd >= 0 && fd < anfdmax) 1469 if (fd >= 0 && fd < anfdmax)
866 fd_event_nc (EV_A_ fd, revents); 1470 fd_event_nocheck (EV_A_ fd, revents);
867} 1471}
868 1472
869/* make sure the external fd watch events are in-sync */ 1473/* make sure the external fd watch events are in-sync */
870/* with the kernel/libev internal state */ 1474/* with the kernel/libev internal state */
871inline_size void 1475inline_size void
872fd_reify (EV_P) 1476fd_reify (EV_P)
873{ 1477{
874 int i; 1478 int i;
875 1479
1480#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1481 for (i = 0; i < fdchangecnt; ++i)
1482 {
1483 int fd = fdchanges [i];
1484 ANFD *anfd = anfds + fd;
1485
1486 if (anfd->reify & EV__IOFDSET && anfd->head)
1487 {
1488 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1489
1490 if (handle != anfd->handle)
1491 {
1492 unsigned long arg;
1493
1494 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1495
1496 /* handle changed, but fd didn't - we need to do it in two steps */
1497 backend_modify (EV_A_ fd, anfd->events, 0);
1498 anfd->events = 0;
1499 anfd->handle = handle;
1500 }
1501 }
1502 }
1503#endif
1504
876 for (i = 0; i < fdchangecnt; ++i) 1505 for (i = 0; i < fdchangecnt; ++i)
877 { 1506 {
878 int fd = fdchanges [i]; 1507 int fd = fdchanges [i];
879 ANFD *anfd = anfds + fd; 1508 ANFD *anfd = anfds + fd;
880 ev_io *w; 1509 ev_io *w;
881 1510
882 unsigned char events = 0; 1511 unsigned char o_events = anfd->events;
1512 unsigned char o_reify = anfd->reify;
883 1513
884 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1514 anfd->reify = 0;
885 events |= (unsigned char)w->events;
886 1515
887#if EV_SELECT_IS_WINSOCKET 1516 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
888 if (events)
889 { 1517 {
890 unsigned long arg; 1518 anfd->events = 0;
891 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1519
892 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1520 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1521 anfd->events |= (unsigned char)w->events;
1522
1523 if (o_events != anfd->events)
1524 o_reify = EV__IOFDSET; /* actually |= */
893 } 1525 }
894#endif
895 1526
896 { 1527 if (o_reify & EV__IOFDSET)
897 unsigned char o_events = anfd->events;
898 unsigned char o_reify = anfd->reify;
899
900 anfd->reify = 0;
901 anfd->events = events;
902
903 if (o_events != events || o_reify & EV__IOFDSET)
904 backend_modify (EV_A_ fd, o_events, events); 1528 backend_modify (EV_A_ fd, o_events, anfd->events);
905 }
906 } 1529 }
907 1530
908 fdchangecnt = 0; 1531 fdchangecnt = 0;
909} 1532}
910 1533
… …
922 fdchanges [fdchangecnt - 1] = fd; 1545 fdchanges [fdchangecnt - 1] = fd;
923 } 1546 }
924} 1547}
925 1548
926/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1549/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
927inline_speed void 1550inline_speed void ecb_cold
928fd_kill (EV_P_ int fd) 1551fd_kill (EV_P_ int fd)
929{ 1552{
930 ev_io *w; 1553 ev_io *w;
931 1554
932 while ((w = (ev_io *)anfds [fd].head)) 1555 while ((w = (ev_io *)anfds [fd].head))
… …
934 ev_io_stop (EV_A_ w); 1557 ev_io_stop (EV_A_ w);
935 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1558 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
936 } 1559 }
937} 1560}
938 1561
939/* check whether the given fd is atcually valid, for error recovery */ 1562/* check whether the given fd is actually valid, for error recovery */
940inline_size int 1563inline_size int ecb_cold
941fd_valid (int fd) 1564fd_valid (int fd)
942{ 1565{
943#ifdef _WIN32 1566#ifdef _WIN32
944 return _get_osfhandle (fd) != -1; 1567 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
945#else 1568#else
946 return fcntl (fd, F_GETFD) != -1; 1569 return fcntl (fd, F_GETFD) != -1;
947#endif 1570#endif
948} 1571}
949 1572
950/* called on EBADF to verify fds */ 1573/* called on EBADF to verify fds */
951static void noinline 1574static void noinline ecb_cold
952fd_ebadf (EV_P) 1575fd_ebadf (EV_P)
953{ 1576{
954 int fd; 1577 int fd;
955 1578
956 for (fd = 0; fd < anfdmax; ++fd) 1579 for (fd = 0; fd < anfdmax; ++fd)
… …
958 if (!fd_valid (fd) && errno == EBADF) 1581 if (!fd_valid (fd) && errno == EBADF)
959 fd_kill (EV_A_ fd); 1582 fd_kill (EV_A_ fd);
960} 1583}
961 1584
962/* called on ENOMEM in select/poll to kill some fds and retry */ 1585/* called on ENOMEM in select/poll to kill some fds and retry */
963static void noinline 1586static void noinline ecb_cold
964fd_enomem (EV_P) 1587fd_enomem (EV_P)
965{ 1588{
966 int fd; 1589 int fd;
967 1590
968 for (fd = anfdmax; fd--; ) 1591 for (fd = anfdmax; fd--; )
… …
986 anfds [fd].emask = 0; 1609 anfds [fd].emask = 0;
987 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1610 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
988 } 1611 }
989} 1612}
990 1613
1614/* used to prepare libev internal fd's */
1615/* this is not fork-safe */
1616inline_speed void
1617fd_intern (int fd)
1618{
1619#ifdef _WIN32
1620 unsigned long arg = 1;
1621 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1622#else
1623 fcntl (fd, F_SETFD, FD_CLOEXEC);
1624 fcntl (fd, F_SETFL, O_NONBLOCK);
1625#endif
1626}
1627
991/*****************************************************************************/ 1628/*****************************************************************************/
992 1629
993/* 1630/*
994 * the heap functions want a real array index. array index 0 uis guaranteed to not 1631 * the heap functions want a real array index. array index 0 is guaranteed to not
995 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1632 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
996 * the branching factor of the d-tree. 1633 * the branching factor of the d-tree.
997 */ 1634 */
998 1635
999/* 1636/*
… …
1147 1784
1148static ANSIG signals [EV_NSIG - 1]; 1785static ANSIG signals [EV_NSIG - 1];
1149 1786
1150/*****************************************************************************/ 1787/*****************************************************************************/
1151 1788
1152/* used to prepare libev internal fd's */ 1789#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1153/* this is not fork-safe */
1154inline_speed void
1155fd_intern (int fd)
1156{
1157#ifdef _WIN32
1158 unsigned long arg = 1;
1159 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1160#else
1161 fcntl (fd, F_SETFD, FD_CLOEXEC);
1162 fcntl (fd, F_SETFL, O_NONBLOCK);
1163#endif
1164}
1165 1790
1166static void noinline 1791static void noinline ecb_cold
1167evpipe_init (EV_P) 1792evpipe_init (EV_P)
1168{ 1793{
1169 if (!ev_is_active (&pipe_w)) 1794 if (!ev_is_active (&pipe_w))
1170 { 1795 {
1171#if EV_USE_EVENTFD 1796# if EV_USE_EVENTFD
1172 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1797 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1173 if (evfd < 0 && errno == EINVAL) 1798 if (evfd < 0 && errno == EINVAL)
1174 evfd = eventfd (0, 0); 1799 evfd = eventfd (0, 0);
1175 1800
1176 if (evfd >= 0) 1801 if (evfd >= 0)
… …
1178 evpipe [0] = -1; 1803 evpipe [0] = -1;
1179 fd_intern (evfd); /* doing it twice doesn't hurt */ 1804 fd_intern (evfd); /* doing it twice doesn't hurt */
1180 ev_io_set (&pipe_w, evfd, EV_READ); 1805 ev_io_set (&pipe_w, evfd, EV_READ);
1181 } 1806 }
1182 else 1807 else
1183#endif 1808# endif
1184 { 1809 {
1185 while (pipe (evpipe)) 1810 while (pipe (evpipe))
1186 ev_syserr ("(libev) error creating signal/async pipe"); 1811 ev_syserr ("(libev) error creating signal/async pipe");
1187 1812
1188 fd_intern (evpipe [0]); 1813 fd_intern (evpipe [0]);
… …
1193 ev_io_start (EV_A_ &pipe_w); 1818 ev_io_start (EV_A_ &pipe_w);
1194 ev_unref (EV_A); /* watcher should not keep loop alive */ 1819 ev_unref (EV_A); /* watcher should not keep loop alive */
1195 } 1820 }
1196} 1821}
1197 1822
1198inline_size void 1823inline_speed void
1199evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1824evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1200{ 1825{
1201 if (!*flag) 1826 if (expect_true (*flag))
1827 return;
1828
1829 *flag = 1;
1830
1831 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1832
1833 pipe_write_skipped = 1;
1834
1835 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1836
1837 if (pipe_write_wanted)
1202 { 1838 {
1839 int old_errno;
1840
1841 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1842
1203 int old_errno = errno; /* save errno because write might clobber it */ 1843 old_errno = errno; /* save errno because write will clobber it */
1204
1205 *flag = 1;
1206 1844
1207#if EV_USE_EVENTFD 1845#if EV_USE_EVENTFD
1208 if (evfd >= 0) 1846 if (evfd >= 0)
1209 { 1847 {
1210 uint64_t counter = 1; 1848 uint64_t counter = 1;
1211 write (evfd, &counter, sizeof (uint64_t)); 1849 write (evfd, &counter, sizeof (uint64_t));
1212 } 1850 }
1213 else 1851 else
1214#endif 1852#endif
1853 {
1854 /* win32 people keep sending patches that change this write() to send() */
1855 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1856 /* so when you think this write should be a send instead, please find out */
1857 /* where your send() is from - it's definitely not the microsoft send, and */
1858 /* tell me. thank you. */
1215 write (evpipe [1], &old_errno, 1); 1859 write (evpipe [1], &(evpipe [1]), 1);
1860 }
1216 1861
1217 errno = old_errno; 1862 errno = old_errno;
1218 } 1863 }
1219} 1864}
1220 1865
… …
1223static void 1868static void
1224pipecb (EV_P_ ev_io *iow, int revents) 1869pipecb (EV_P_ ev_io *iow, int revents)
1225{ 1870{
1226 int i; 1871 int i;
1227 1872
1873 if (revents & EV_READ)
1874 {
1228#if EV_USE_EVENTFD 1875#if EV_USE_EVENTFD
1229 if (evfd >= 0) 1876 if (evfd >= 0)
1230 { 1877 {
1231 uint64_t counter; 1878 uint64_t counter;
1232 read (evfd, &counter, sizeof (uint64_t)); 1879 read (evfd, &counter, sizeof (uint64_t));
1233 } 1880 }
1234 else 1881 else
1235#endif 1882#endif
1236 { 1883 {
1237 char dummy; 1884 char dummy;
1885 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1238 read (evpipe [0], &dummy, 1); 1886 read (evpipe [0], &dummy, 1);
1887 }
1239 } 1888 }
1240 1889
1890 pipe_write_skipped = 0;
1891
1892#if EV_SIGNAL_ENABLE
1241 if (sig_pending) 1893 if (sig_pending)
1242 { 1894 {
1243 sig_pending = 0; 1895 sig_pending = 0;
1244 1896
1245 for (i = EV_NSIG - 1; i--; ) 1897 for (i = EV_NSIG - 1; i--; )
1246 if (expect_false (signals [i].pending)) 1898 if (expect_false (signals [i].pending))
1247 ev_feed_signal_event (EV_A_ i + 1); 1899 ev_feed_signal_event (EV_A_ i + 1);
1248 } 1900 }
1901#endif
1249 1902
1250#if EV_ASYNC_ENABLE 1903#if EV_ASYNC_ENABLE
1251 if (async_pending) 1904 if (async_pending)
1252 { 1905 {
1253 async_pending = 0; 1906 async_pending = 0;
… …
1262#endif 1915#endif
1263} 1916}
1264 1917
1265/*****************************************************************************/ 1918/*****************************************************************************/
1266 1919
1920void
1921ev_feed_signal (int signum)
1922{
1923#if EV_MULTIPLICITY
1924 EV_P = signals [signum - 1].loop;
1925
1926 if (!EV_A)
1927 return;
1928#endif
1929
1930 if (!ev_active (&pipe_w))
1931 return;
1932
1933 signals [signum - 1].pending = 1;
1934 evpipe_write (EV_A_ &sig_pending);
1935}
1936
1267static void 1937static void
1268ev_sighandler (int signum) 1938ev_sighandler (int signum)
1269{ 1939{
1270#if EV_MULTIPLICITY
1271 EV_P = signals [signum - 1].loop;
1272#endif
1273
1274#if _WIN32 1940#ifdef _WIN32
1275 signal (signum, ev_sighandler); 1941 signal (signum, ev_sighandler);
1276#endif 1942#endif
1277 1943
1278 signals [signum - 1].pending = 1; 1944 ev_feed_signal (signum);
1279 evpipe_write (EV_A_ &sig_pending);
1280} 1945}
1281 1946
1282void noinline 1947void noinline
1283ev_feed_signal_event (EV_P_ int signum) 1948ev_feed_signal_event (EV_P_ int signum)
1284{ 1949{
… …
1321 break; 1986 break;
1322 } 1987 }
1323} 1988}
1324#endif 1989#endif
1325 1990
1991#endif
1992
1326/*****************************************************************************/ 1993/*****************************************************************************/
1327 1994
1995#if EV_CHILD_ENABLE
1328static WL childs [EV_PID_HASHSIZE]; 1996static WL childs [EV_PID_HASHSIZE];
1329
1330#ifndef _WIN32
1331 1997
1332static ev_signal childev; 1998static ev_signal childev;
1333 1999
1334#ifndef WIFCONTINUED 2000#ifndef WIFCONTINUED
1335# define WIFCONTINUED(status) 0 2001# define WIFCONTINUED(status) 0
… …
1340child_reap (EV_P_ int chain, int pid, int status) 2006child_reap (EV_P_ int chain, int pid, int status)
1341{ 2007{
1342 ev_child *w; 2008 ev_child *w;
1343 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2009 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1344 2010
1345 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2011 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1346 { 2012 {
1347 if ((w->pid == pid || !w->pid) 2013 if ((w->pid == pid || !w->pid)
1348 && (!traced || (w->flags & 1))) 2014 && (!traced || (w->flags & 1)))
1349 { 2015 {
1350 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2016 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1375 /* make sure we are called again until all children have been reaped */ 2041 /* make sure we are called again until all children have been reaped */
1376 /* we need to do it this way so that the callback gets called before we continue */ 2042 /* we need to do it this way so that the callback gets called before we continue */
1377 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2043 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1378 2044
1379 child_reap (EV_A_ pid, pid, status); 2045 child_reap (EV_A_ pid, pid, status);
1380 if (EV_PID_HASHSIZE > 1) 2046 if ((EV_PID_HASHSIZE) > 1)
1381 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2047 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1382} 2048}
1383 2049
1384#endif 2050#endif
1385 2051
1386/*****************************************************************************/ 2052/*****************************************************************************/
1387 2053
2054#if EV_USE_IOCP
2055# include "ev_iocp.c"
2056#endif
1388#if EV_USE_PORT 2057#if EV_USE_PORT
1389# include "ev_port.c" 2058# include "ev_port.c"
1390#endif 2059#endif
1391#if EV_USE_KQUEUE 2060#if EV_USE_KQUEUE
1392# include "ev_kqueue.c" 2061# include "ev_kqueue.c"
… …
1399#endif 2068#endif
1400#if EV_USE_SELECT 2069#if EV_USE_SELECT
1401# include "ev_select.c" 2070# include "ev_select.c"
1402#endif 2071#endif
1403 2072
1404int 2073int ecb_cold
1405ev_version_major (void) 2074ev_version_major (void)
1406{ 2075{
1407 return EV_VERSION_MAJOR; 2076 return EV_VERSION_MAJOR;
1408} 2077}
1409 2078
1410int 2079int ecb_cold
1411ev_version_minor (void) 2080ev_version_minor (void)
1412{ 2081{
1413 return EV_VERSION_MINOR; 2082 return EV_VERSION_MINOR;
1414} 2083}
1415 2084
1416/* return true if we are running with elevated privileges and should ignore env variables */ 2085/* return true if we are running with elevated privileges and should ignore env variables */
1417int inline_size 2086int inline_size ecb_cold
1418enable_secure (void) 2087enable_secure (void)
1419{ 2088{
1420#ifdef _WIN32 2089#ifdef _WIN32
1421 return 0; 2090 return 0;
1422#else 2091#else
1423 return getuid () != geteuid () 2092 return getuid () != geteuid ()
1424 || getgid () != getegid (); 2093 || getgid () != getegid ();
1425#endif 2094#endif
1426} 2095}
1427 2096
1428unsigned int 2097unsigned int ecb_cold
1429ev_supported_backends (void) 2098ev_supported_backends (void)
1430{ 2099{
1431 unsigned int flags = 0; 2100 unsigned int flags = 0;
1432 2101
1433 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2102 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1437 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2106 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1438 2107
1439 return flags; 2108 return flags;
1440} 2109}
1441 2110
1442unsigned int 2111unsigned int ecb_cold
1443ev_recommended_backends (void) 2112ev_recommended_backends (void)
1444{ 2113{
1445 unsigned int flags = ev_supported_backends (); 2114 unsigned int flags = ev_supported_backends ();
1446 2115
1447#ifndef __NetBSD__ 2116#ifndef __NetBSD__
… …
1452#ifdef __APPLE__ 2121#ifdef __APPLE__
1453 /* only select works correctly on that "unix-certified" platform */ 2122 /* only select works correctly on that "unix-certified" platform */
1454 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2123 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1455 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2124 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1456#endif 2125#endif
2126#ifdef __FreeBSD__
2127 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2128#endif
1457 2129
1458 return flags; 2130 return flags;
1459} 2131}
1460 2132
1461unsigned int 2133unsigned int ecb_cold
1462ev_embeddable_backends (void) 2134ev_embeddable_backends (void)
1463{ 2135{
1464 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2136 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1465 2137
1466 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2138 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1467 /* please fix it and tell me how to detect the fix */ 2139 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1468 flags &= ~EVBACKEND_EPOLL; 2140 flags &= ~EVBACKEND_EPOLL;
1469 2141
1470 return flags; 2142 return flags;
1471} 2143}
1472 2144
1473unsigned int 2145unsigned int
1474ev_backend (EV_P) 2146ev_backend (EV_P)
1475{ 2147{
1476 return backend; 2148 return backend;
1477} 2149}
1478 2150
1479#if EV_MINIMAL < 2 2151#if EV_FEATURE_API
1480unsigned int 2152unsigned int
1481ev_loop_count (EV_P) 2153ev_iteration (EV_P)
1482{ 2154{
1483 return loop_count; 2155 return loop_count;
1484} 2156}
1485 2157
1486unsigned int 2158unsigned int
1487ev_loop_depth (EV_P) 2159ev_depth (EV_P)
1488{ 2160{
1489 return loop_depth; 2161 return loop_depth;
1490} 2162}
1491 2163
1492void 2164void
… …
1511ev_userdata (EV_P) 2183ev_userdata (EV_P)
1512{ 2184{
1513 return userdata; 2185 return userdata;
1514} 2186}
1515 2187
2188void
1516void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2189ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1517{ 2190{
1518 invoke_cb = invoke_pending_cb; 2191 invoke_cb = invoke_pending_cb;
1519} 2192}
1520 2193
2194void
1521void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2195ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1522{ 2196{
1523 release_cb = release; 2197 release_cb = release;
1524 acquire_cb = acquire; 2198 acquire_cb = acquire;
1525} 2199}
1526#endif 2200#endif
1527 2201
1528/* initialise a loop structure, must be zero-initialised */ 2202/* initialise a loop structure, must be zero-initialised */
1529static void noinline 2203static void noinline ecb_cold
1530loop_init (EV_P_ unsigned int flags) 2204loop_init (EV_P_ unsigned int flags)
1531{ 2205{
1532 if (!backend) 2206 if (!backend)
1533 { 2207 {
2208 origflags = flags;
2209
1534#if EV_USE_REALTIME 2210#if EV_USE_REALTIME
1535 if (!have_realtime) 2211 if (!have_realtime)
1536 { 2212 {
1537 struct timespec ts; 2213 struct timespec ts;
1538 2214
… …
1560 if (!(flags & EVFLAG_NOENV) 2236 if (!(flags & EVFLAG_NOENV)
1561 && !enable_secure () 2237 && !enable_secure ()
1562 && getenv ("LIBEV_FLAGS")) 2238 && getenv ("LIBEV_FLAGS"))
1563 flags = atoi (getenv ("LIBEV_FLAGS")); 2239 flags = atoi (getenv ("LIBEV_FLAGS"));
1564 2240
1565 ev_rt_now = ev_time (); 2241 ev_rt_now = ev_time ();
1566 mn_now = get_clock (); 2242 mn_now = get_clock ();
1567 now_floor = mn_now; 2243 now_floor = mn_now;
1568 rtmn_diff = ev_rt_now - mn_now; 2244 rtmn_diff = ev_rt_now - mn_now;
1569#if EV_MINIMAL < 2 2245#if EV_FEATURE_API
1570 invoke_cb = ev_invoke_pending; 2246 invoke_cb = ev_invoke_pending;
1571#endif 2247#endif
1572 2248
1573 io_blocktime = 0.; 2249 io_blocktime = 0.;
1574 timeout_blocktime = 0.; 2250 timeout_blocktime = 0.;
1575 backend = 0; 2251 backend = 0;
1576 backend_fd = -1; 2252 backend_fd = -1;
1577 sig_pending = 0; 2253 sig_pending = 0;
1578#if EV_ASYNC_ENABLE 2254#if EV_ASYNC_ENABLE
1579 async_pending = 0; 2255 async_pending = 0;
1580#endif 2256#endif
2257 pipe_write_skipped = 0;
2258 pipe_write_wanted = 0;
1581#if EV_USE_INOTIFY 2259#if EV_USE_INOTIFY
1582 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2260 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1583#endif 2261#endif
1584#if EV_USE_SIGNALFD 2262#if EV_USE_SIGNALFD
1585 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2263 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1586#endif 2264#endif
1587 2265
1588 if (!(flags & 0x0000ffffU)) 2266 if (!(flags & EVBACKEND_MASK))
1589 flags |= ev_recommended_backends (); 2267 flags |= ev_recommended_backends ();
1590 2268
2269#if EV_USE_IOCP
2270 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2271#endif
1591#if EV_USE_PORT 2272#if EV_USE_PORT
1592 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2273 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1593#endif 2274#endif
1594#if EV_USE_KQUEUE 2275#if EV_USE_KQUEUE
1595 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2276 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1604 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2285 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1605#endif 2286#endif
1606 2287
1607 ev_prepare_init (&pending_w, pendingcb); 2288 ev_prepare_init (&pending_w, pendingcb);
1608 2289
2290#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1609 ev_init (&pipe_w, pipecb); 2291 ev_init (&pipe_w, pipecb);
1610 ev_set_priority (&pipe_w, EV_MAXPRI); 2292 ev_set_priority (&pipe_w, EV_MAXPRI);
2293#endif
1611 } 2294 }
1612} 2295}
1613 2296
1614/* free up a loop structure */ 2297/* free up a loop structure */
1615static void noinline 2298void ecb_cold
1616loop_destroy (EV_P) 2299ev_loop_destroy (EV_P)
1617{ 2300{
1618 int i; 2301 int i;
2302
2303#if EV_MULTIPLICITY
2304 /* mimic free (0) */
2305 if (!EV_A)
2306 return;
2307#endif
2308
2309#if EV_CLEANUP_ENABLE
2310 /* queue cleanup watchers (and execute them) */
2311 if (expect_false (cleanupcnt))
2312 {
2313 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2314 EV_INVOKE_PENDING;
2315 }
2316#endif
2317
2318#if EV_CHILD_ENABLE
2319 if (ev_is_active (&childev))
2320 {
2321 ev_ref (EV_A); /* child watcher */
2322 ev_signal_stop (EV_A_ &childev);
2323 }
2324#endif
1619 2325
1620 if (ev_is_active (&pipe_w)) 2326 if (ev_is_active (&pipe_w))
1621 { 2327 {
1622 /*ev_ref (EV_A);*/ 2328 /*ev_ref (EV_A);*/
1623 /*ev_io_stop (EV_A_ &pipe_w);*/ 2329 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1634 } 2340 }
1635 } 2341 }
1636 2342
1637#if EV_USE_SIGNALFD 2343#if EV_USE_SIGNALFD
1638 if (ev_is_active (&sigfd_w)) 2344 if (ev_is_active (&sigfd_w))
1639 {
1640 /*ev_ref (EV_A);*/
1641 /*ev_io_stop (EV_A_ &sigfd_w);*/
1642
1643 close (sigfd); 2345 close (sigfd);
1644 }
1645#endif 2346#endif
1646 2347
1647#if EV_USE_INOTIFY 2348#if EV_USE_INOTIFY
1648 if (fs_fd >= 0) 2349 if (fs_fd >= 0)
1649 close (fs_fd); 2350 close (fs_fd);
1650#endif 2351#endif
1651 2352
1652 if (backend_fd >= 0) 2353 if (backend_fd >= 0)
1653 close (backend_fd); 2354 close (backend_fd);
1654 2355
2356#if EV_USE_IOCP
2357 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2358#endif
1655#if EV_USE_PORT 2359#if EV_USE_PORT
1656 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2360 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1657#endif 2361#endif
1658#if EV_USE_KQUEUE 2362#if EV_USE_KQUEUE
1659 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2363 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1686 array_free (periodic, EMPTY); 2390 array_free (periodic, EMPTY);
1687#endif 2391#endif
1688#if EV_FORK_ENABLE 2392#if EV_FORK_ENABLE
1689 array_free (fork, EMPTY); 2393 array_free (fork, EMPTY);
1690#endif 2394#endif
2395#if EV_CLEANUP_ENABLE
2396 array_free (cleanup, EMPTY);
2397#endif
1691 array_free (prepare, EMPTY); 2398 array_free (prepare, EMPTY);
1692 array_free (check, EMPTY); 2399 array_free (check, EMPTY);
1693#if EV_ASYNC_ENABLE 2400#if EV_ASYNC_ENABLE
1694 array_free (async, EMPTY); 2401 array_free (async, EMPTY);
1695#endif 2402#endif
1696 2403
1697 backend = 0; 2404 backend = 0;
2405
2406#if EV_MULTIPLICITY
2407 if (ev_is_default_loop (EV_A))
2408#endif
2409 ev_default_loop_ptr = 0;
2410#if EV_MULTIPLICITY
2411 else
2412 ev_free (EV_A);
2413#endif
1698} 2414}
1699 2415
1700#if EV_USE_INOTIFY 2416#if EV_USE_INOTIFY
1701inline_size void infy_fork (EV_P); 2417inline_size void infy_fork (EV_P);
1702#endif 2418#endif
… …
1717 infy_fork (EV_A); 2433 infy_fork (EV_A);
1718#endif 2434#endif
1719 2435
1720 if (ev_is_active (&pipe_w)) 2436 if (ev_is_active (&pipe_w))
1721 { 2437 {
1722 /* this "locks" the handlers against writing to the pipe */ 2438 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1723 /* while we modify the fd vars */
1724 sig_pending = 1;
1725#if EV_ASYNC_ENABLE
1726 async_pending = 1;
1727#endif
1728 2439
1729 ev_ref (EV_A); 2440 ev_ref (EV_A);
1730 ev_io_stop (EV_A_ &pipe_w); 2441 ev_io_stop (EV_A_ &pipe_w);
1731 2442
1732#if EV_USE_EVENTFD 2443#if EV_USE_EVENTFD
… …
1738 { 2449 {
1739 EV_WIN32_CLOSE_FD (evpipe [0]); 2450 EV_WIN32_CLOSE_FD (evpipe [0]);
1740 EV_WIN32_CLOSE_FD (evpipe [1]); 2451 EV_WIN32_CLOSE_FD (evpipe [1]);
1741 } 2452 }
1742 2453
2454#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1743 evpipe_init (EV_A); 2455 evpipe_init (EV_A);
1744 /* now iterate over everything, in case we missed something */ 2456 /* now iterate over everything, in case we missed something */
1745 pipecb (EV_A_ &pipe_w, EV_READ); 2457 pipecb (EV_A_ &pipe_w, EV_READ);
2458#endif
1746 } 2459 }
1747 2460
1748 postfork = 0; 2461 postfork = 0;
1749} 2462}
1750 2463
1751#if EV_MULTIPLICITY 2464#if EV_MULTIPLICITY
1752 2465
1753struct ev_loop * 2466struct ev_loop * ecb_cold
1754ev_loop_new (unsigned int flags) 2467ev_loop_new (unsigned int flags)
1755{ 2468{
1756 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2469 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1757 2470
1758 memset (EV_A, 0, sizeof (struct ev_loop)); 2471 memset (EV_A, 0, sizeof (struct ev_loop));
1759 loop_init (EV_A_ flags); 2472 loop_init (EV_A_ flags);
1760 2473
1761 if (ev_backend (EV_A)) 2474 if (ev_backend (EV_A))
1762 return EV_A; 2475 return EV_A;
1763 2476
2477 ev_free (EV_A);
1764 return 0; 2478 return 0;
1765} 2479}
1766 2480
1767void
1768ev_loop_destroy (EV_P)
1769{
1770 loop_destroy (EV_A);
1771 ev_free (loop);
1772}
1773
1774void
1775ev_loop_fork (EV_P)
1776{
1777 postfork = 1; /* must be in line with ev_default_fork */
1778}
1779#endif /* multiplicity */ 2481#endif /* multiplicity */
1780 2482
1781#if EV_VERIFY 2483#if EV_VERIFY
1782static void noinline 2484static void noinline ecb_cold
1783verify_watcher (EV_P_ W w) 2485verify_watcher (EV_P_ W w)
1784{ 2486{
1785 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2487 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1786 2488
1787 if (w->pending) 2489 if (w->pending)
1788 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2490 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1789} 2491}
1790 2492
1791static void noinline 2493static void noinline ecb_cold
1792verify_heap (EV_P_ ANHE *heap, int N) 2494verify_heap (EV_P_ ANHE *heap, int N)
1793{ 2495{
1794 int i; 2496 int i;
1795 2497
1796 for (i = HEAP0; i < N + HEAP0; ++i) 2498 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1801 2503
1802 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2504 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1803 } 2505 }
1804} 2506}
1805 2507
1806static void noinline 2508static void noinline ecb_cold
1807array_verify (EV_P_ W *ws, int cnt) 2509array_verify (EV_P_ W *ws, int cnt)
1808{ 2510{
1809 while (cnt--) 2511 while (cnt--)
1810 { 2512 {
1811 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2513 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1812 verify_watcher (EV_A_ ws [cnt]); 2514 verify_watcher (EV_A_ ws [cnt]);
1813 } 2515 }
1814} 2516}
1815#endif 2517#endif
1816 2518
1817#if EV_MINIMAL < 2 2519#if EV_FEATURE_API
1818void 2520void ecb_cold
1819ev_loop_verify (EV_P) 2521ev_verify (EV_P)
1820{ 2522{
1821#if EV_VERIFY 2523#if EV_VERIFY
1822 int i; 2524 int i;
1823 WL w; 2525 WL w;
1824 2526
… …
1858#if EV_FORK_ENABLE 2560#if EV_FORK_ENABLE
1859 assert (forkmax >= forkcnt); 2561 assert (forkmax >= forkcnt);
1860 array_verify (EV_A_ (W *)forks, forkcnt); 2562 array_verify (EV_A_ (W *)forks, forkcnt);
1861#endif 2563#endif
1862 2564
2565#if EV_CLEANUP_ENABLE
2566 assert (cleanupmax >= cleanupcnt);
2567 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2568#endif
2569
1863#if EV_ASYNC_ENABLE 2570#if EV_ASYNC_ENABLE
1864 assert (asyncmax >= asynccnt); 2571 assert (asyncmax >= asynccnt);
1865 array_verify (EV_A_ (W *)asyncs, asynccnt); 2572 array_verify (EV_A_ (W *)asyncs, asynccnt);
1866#endif 2573#endif
1867 2574
2575#if EV_PREPARE_ENABLE
1868 assert (preparemax >= preparecnt); 2576 assert (preparemax >= preparecnt);
1869 array_verify (EV_A_ (W *)prepares, preparecnt); 2577 array_verify (EV_A_ (W *)prepares, preparecnt);
2578#endif
1870 2579
2580#if EV_CHECK_ENABLE
1871 assert (checkmax >= checkcnt); 2581 assert (checkmax >= checkcnt);
1872 array_verify (EV_A_ (W *)checks, checkcnt); 2582 array_verify (EV_A_ (W *)checks, checkcnt);
2583#endif
1873 2584
1874# if 0 2585# if 0
2586#if EV_CHILD_ENABLE
1875 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2587 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1876 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2588 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2589#endif
1877# endif 2590# endif
1878#endif 2591#endif
1879} 2592}
1880#endif 2593#endif
1881 2594
1882#if EV_MULTIPLICITY 2595#if EV_MULTIPLICITY
1883struct ev_loop * 2596struct ev_loop * ecb_cold
1884ev_default_loop_init (unsigned int flags)
1885#else 2597#else
1886int 2598int
2599#endif
1887ev_default_loop (unsigned int flags) 2600ev_default_loop (unsigned int flags)
1888#endif
1889{ 2601{
1890 if (!ev_default_loop_ptr) 2602 if (!ev_default_loop_ptr)
1891 { 2603 {
1892#if EV_MULTIPLICITY 2604#if EV_MULTIPLICITY
1893 EV_P = ev_default_loop_ptr = &default_loop_struct; 2605 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1897 2609
1898 loop_init (EV_A_ flags); 2610 loop_init (EV_A_ flags);
1899 2611
1900 if (ev_backend (EV_A)) 2612 if (ev_backend (EV_A))
1901 { 2613 {
1902#ifndef _WIN32 2614#if EV_CHILD_ENABLE
1903 ev_signal_init (&childev, childcb, SIGCHLD); 2615 ev_signal_init (&childev, childcb, SIGCHLD);
1904 ev_set_priority (&childev, EV_MAXPRI); 2616 ev_set_priority (&childev, EV_MAXPRI);
1905 ev_signal_start (EV_A_ &childev); 2617 ev_signal_start (EV_A_ &childev);
1906 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2618 ev_unref (EV_A); /* child watcher should not keep loop alive */
1907#endif 2619#endif
… …
1912 2624
1913 return ev_default_loop_ptr; 2625 return ev_default_loop_ptr;
1914} 2626}
1915 2627
1916void 2628void
1917ev_default_destroy (void) 2629ev_loop_fork (EV_P)
1918{ 2630{
1919#if EV_MULTIPLICITY
1920 EV_P = ev_default_loop_ptr;
1921#endif
1922
1923 ev_default_loop_ptr = 0;
1924
1925#ifndef _WIN32
1926 ev_ref (EV_A); /* child watcher */
1927 ev_signal_stop (EV_A_ &childev);
1928#endif
1929
1930 loop_destroy (EV_A);
1931}
1932
1933void
1934ev_default_fork (void)
1935{
1936#if EV_MULTIPLICITY
1937 EV_P = ev_default_loop_ptr;
1938#endif
1939
1940 postfork = 1; /* must be in line with ev_loop_fork */ 2631 postfork = 1; /* must be in line with ev_default_fork */
1941} 2632}
1942 2633
1943/*****************************************************************************/ 2634/*****************************************************************************/
1944 2635
1945void 2636void
… …
1967 2658
1968 for (pri = NUMPRI; pri--; ) 2659 for (pri = NUMPRI; pri--; )
1969 while (pendingcnt [pri]) 2660 while (pendingcnt [pri])
1970 { 2661 {
1971 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2662 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1972
1973 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1974 /* ^ this is no longer true, as pending_w could be here */
1975 2663
1976 p->w->pending = 0; 2664 p->w->pending = 0;
1977 EV_CB_INVOKE (p->w, p->events); 2665 EV_CB_INVOKE (p->w, p->events);
1978 EV_FREQUENT_CHECK; 2666 EV_FREQUENT_CHECK;
1979 } 2667 }
… …
2036 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
2037 feed_reverse (EV_A_ (W)w); 2725 feed_reverse (EV_A_ (W)w);
2038 } 2726 }
2039 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2727 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2040 2728
2041 feed_reverse_done (EV_A_ EV_TIMEOUT); 2729 feed_reverse_done (EV_A_ EV_TIMER);
2042 } 2730 }
2043} 2731}
2044 2732
2045#if EV_PERIODIC_ENABLE 2733#if EV_PERIODIC_ENABLE
2734
2735static void noinline
2736periodic_recalc (EV_P_ ev_periodic *w)
2737{
2738 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2739 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2740
2741 /* the above almost always errs on the low side */
2742 while (at <= ev_rt_now)
2743 {
2744 ev_tstamp nat = at + w->interval;
2745
2746 /* when resolution fails us, we use ev_rt_now */
2747 if (expect_false (nat == at))
2748 {
2749 at = ev_rt_now;
2750 break;
2751 }
2752
2753 at = nat;
2754 }
2755
2756 ev_at (w) = at;
2757}
2758
2046/* make periodics pending */ 2759/* make periodics pending */
2047inline_size void 2760inline_size void
2048periodics_reify (EV_P) 2761periodics_reify (EV_P)
2049{ 2762{
2050 EV_FREQUENT_CHECK; 2763 EV_FREQUENT_CHECK;
… …
2069 ANHE_at_cache (periodics [HEAP0]); 2782 ANHE_at_cache (periodics [HEAP0]);
2070 downheap (periodics, periodiccnt, HEAP0); 2783 downheap (periodics, periodiccnt, HEAP0);
2071 } 2784 }
2072 else if (w->interval) 2785 else if (w->interval)
2073 { 2786 {
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2787 periodic_recalc (EV_A_ w);
2075 /* if next trigger time is not sufficiently in the future, put it there */
2076 /* this might happen because of floating point inexactness */
2077 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2078 {
2079 ev_at (w) += w->interval;
2080
2081 /* if interval is unreasonably low we might still have a time in the past */
2082 /* so correct this. this will make the periodic very inexact, but the user */
2083 /* has effectively asked to get triggered more often than possible */
2084 if (ev_at (w) < ev_rt_now)
2085 ev_at (w) = ev_rt_now;
2086 }
2087
2088 ANHE_at_cache (periodics [HEAP0]); 2788 ANHE_at_cache (periodics [HEAP0]);
2089 downheap (periodics, periodiccnt, HEAP0); 2789 downheap (periodics, periodiccnt, HEAP0);
2090 } 2790 }
2091 else 2791 else
2092 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2792 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2099 feed_reverse_done (EV_A_ EV_PERIODIC); 2799 feed_reverse_done (EV_A_ EV_PERIODIC);
2100 } 2800 }
2101} 2801}
2102 2802
2103/* simply recalculate all periodics */ 2803/* simply recalculate all periodics */
2104/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2804/* TODO: maybe ensure that at least one event happens when jumping forward? */
2105static void noinline 2805static void noinline ecb_cold
2106periodics_reschedule (EV_P) 2806periodics_reschedule (EV_P)
2107{ 2807{
2108 int i; 2808 int i;
2109 2809
2110 /* adjust periodics after time jump */ 2810 /* adjust periodics after time jump */
… …
2113 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2813 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2114 2814
2115 if (w->reschedule_cb) 2815 if (w->reschedule_cb)
2116 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2816 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2117 else if (w->interval) 2817 else if (w->interval)
2118 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2818 periodic_recalc (EV_A_ w);
2119 2819
2120 ANHE_at_cache (periodics [i]); 2820 ANHE_at_cache (periodics [i]);
2121 } 2821 }
2122 2822
2123 reheap (periodics, periodiccnt); 2823 reheap (periodics, periodiccnt);
2124} 2824}
2125#endif 2825#endif
2126 2826
2127/* adjust all timers by a given offset */ 2827/* adjust all timers by a given offset */
2128static void noinline 2828static void noinline ecb_cold
2129timers_reschedule (EV_P_ ev_tstamp adjust) 2829timers_reschedule (EV_P_ ev_tstamp adjust)
2130{ 2830{
2131 int i; 2831 int i;
2132 2832
2133 for (i = 0; i < timercnt; ++i) 2833 for (i = 0; i < timercnt; ++i)
… …
2137 ANHE_at_cache (*he); 2837 ANHE_at_cache (*he);
2138 } 2838 }
2139} 2839}
2140 2840
2141/* fetch new monotonic and realtime times from the kernel */ 2841/* fetch new monotonic and realtime times from the kernel */
2142/* also detetc if there was a timejump, and act accordingly */ 2842/* also detect if there was a timejump, and act accordingly */
2143inline_speed void 2843inline_speed void
2144time_update (EV_P_ ev_tstamp max_block) 2844time_update (EV_P_ ev_tstamp max_block)
2145{ 2845{
2146#if EV_USE_MONOTONIC 2846#if EV_USE_MONOTONIC
2147 if (expect_true (have_monotonic)) 2847 if (expect_true (have_monotonic))
… …
2170 * doesn't hurt either as we only do this on time-jumps or 2870 * doesn't hurt either as we only do this on time-jumps or
2171 * in the unlikely event of having been preempted here. 2871 * in the unlikely event of having been preempted here.
2172 */ 2872 */
2173 for (i = 4; --i; ) 2873 for (i = 4; --i; )
2174 { 2874 {
2875 ev_tstamp diff;
2175 rtmn_diff = ev_rt_now - mn_now; 2876 rtmn_diff = ev_rt_now - mn_now;
2176 2877
2878 diff = odiff - rtmn_diff;
2879
2177 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2880 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2178 return; /* all is well */ 2881 return; /* all is well */
2179 2882
2180 ev_rt_now = ev_time (); 2883 ev_rt_now = ev_time ();
2181 mn_now = get_clock (); 2884 mn_now = get_clock ();
2182 now_floor = mn_now; 2885 now_floor = mn_now;
… …
2205 mn_now = ev_rt_now; 2908 mn_now = ev_rt_now;
2206 } 2909 }
2207} 2910}
2208 2911
2209void 2912void
2210ev_loop (EV_P_ int flags) 2913ev_run (EV_P_ int flags)
2211{ 2914{
2212#if EV_MINIMAL < 2 2915#if EV_FEATURE_API
2213 ++loop_depth; 2916 ++loop_depth;
2214#endif 2917#endif
2215 2918
2216 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2919 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2217 2920
2218 loop_done = EVUNLOOP_CANCEL; 2921 loop_done = EVBREAK_CANCEL;
2219 2922
2220 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2923 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2221 2924
2222 do 2925 do
2223 { 2926 {
2224#if EV_VERIFY >= 2 2927#if EV_VERIFY >= 2
2225 ev_loop_verify (EV_A); 2928 ev_verify (EV_A);
2226#endif 2929#endif
2227 2930
2228#ifndef _WIN32 2931#ifndef _WIN32
2229 if (expect_false (curpid)) /* penalise the forking check even more */ 2932 if (expect_false (curpid)) /* penalise the forking check even more */
2230 if (expect_false (getpid () != curpid)) 2933 if (expect_false (getpid () != curpid))
… …
2242 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2945 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2243 EV_INVOKE_PENDING; 2946 EV_INVOKE_PENDING;
2244 } 2947 }
2245#endif 2948#endif
2246 2949
2950#if EV_PREPARE_ENABLE
2247 /* queue prepare watchers (and execute them) */ 2951 /* queue prepare watchers (and execute them) */
2248 if (expect_false (preparecnt)) 2952 if (expect_false (preparecnt))
2249 { 2953 {
2250 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2954 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2251 EV_INVOKE_PENDING; 2955 EV_INVOKE_PENDING;
2252 } 2956 }
2957#endif
2253 2958
2254 if (expect_false (loop_done)) 2959 if (expect_false (loop_done))
2255 break; 2960 break;
2256 2961
2257 /* we might have forked, so reify kernel state if necessary */ 2962 /* we might have forked, so reify kernel state if necessary */
… …
2264 /* calculate blocking time */ 2969 /* calculate blocking time */
2265 { 2970 {
2266 ev_tstamp waittime = 0.; 2971 ev_tstamp waittime = 0.;
2267 ev_tstamp sleeptime = 0.; 2972 ev_tstamp sleeptime = 0.;
2268 2973
2974 /* remember old timestamp for io_blocktime calculation */
2975 ev_tstamp prev_mn_now = mn_now;
2976
2977 /* update time to cancel out callback processing overhead */
2978 time_update (EV_A_ 1e100);
2979
2980 /* from now on, we want a pipe-wake-up */
2981 pipe_write_wanted = 1;
2982
2983 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2984
2269 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2985 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2270 { 2986 {
2271 /* remember old timestamp for io_blocktime calculation */
2272 ev_tstamp prev_mn_now = mn_now;
2273
2274 /* update time to cancel out callback processing overhead */
2275 time_update (EV_A_ 1e100);
2276
2277 waittime = MAX_BLOCKTIME; 2987 waittime = MAX_BLOCKTIME;
2278 2988
2279 if (timercnt) 2989 if (timercnt)
2280 { 2990 {
2281 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2282 if (waittime > to) waittime = to; 2992 if (waittime > to) waittime = to;
2283 } 2993 }
2284 2994
2285#if EV_PERIODIC_ENABLE 2995#if EV_PERIODIC_ENABLE
2286 if (periodiccnt) 2996 if (periodiccnt)
2287 { 2997 {
2288 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2289 if (waittime > to) waittime = to; 2999 if (waittime > to) waittime = to;
2290 } 3000 }
2291#endif 3001#endif
2292 3002
2293 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3003 /* don't let timeouts decrease the waittime below timeout_blocktime */
2294 if (expect_false (waittime < timeout_blocktime)) 3004 if (expect_false (waittime < timeout_blocktime))
2295 waittime = timeout_blocktime; 3005 waittime = timeout_blocktime;
3006
3007 /* at this point, we NEED to wait, so we have to ensure */
3008 /* to pass a minimum nonzero value to the backend */
3009 if (expect_false (waittime < backend_mintime))
3010 waittime = backend_mintime;
2296 3011
2297 /* extra check because io_blocktime is commonly 0 */ 3012 /* extra check because io_blocktime is commonly 0 */
2298 if (expect_false (io_blocktime)) 3013 if (expect_false (io_blocktime))
2299 { 3014 {
2300 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3015 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2301 3016
2302 if (sleeptime > waittime - backend_fudge) 3017 if (sleeptime > waittime - backend_mintime)
2303 sleeptime = waittime - backend_fudge; 3018 sleeptime = waittime - backend_mintime;
2304 3019
2305 if (expect_true (sleeptime > 0.)) 3020 if (expect_true (sleeptime > 0.))
2306 { 3021 {
2307 ev_sleep (sleeptime); 3022 ev_sleep (sleeptime);
2308 waittime -= sleeptime; 3023 waittime -= sleeptime;
2309 } 3024 }
2310 } 3025 }
2311 } 3026 }
2312 3027
2313#if EV_MINIMAL < 2 3028#if EV_FEATURE_API
2314 ++loop_count; 3029 ++loop_count;
2315#endif 3030#endif
2316 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3031 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2317 backend_poll (EV_A_ waittime); 3032 backend_poll (EV_A_ waittime);
2318 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3033 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3034
3035 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3036
3037 if (pipe_write_skipped)
3038 {
3039 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3040 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3041 }
3042
2319 3043
2320 /* update ev_rt_now, do magic */ 3044 /* update ev_rt_now, do magic */
2321 time_update (EV_A_ waittime + sleeptime); 3045 time_update (EV_A_ waittime + sleeptime);
2322 } 3046 }
2323 3047
… …
2330#if EV_IDLE_ENABLE 3054#if EV_IDLE_ENABLE
2331 /* queue idle watchers unless other events are pending */ 3055 /* queue idle watchers unless other events are pending */
2332 idle_reify (EV_A); 3056 idle_reify (EV_A);
2333#endif 3057#endif
2334 3058
3059#if EV_CHECK_ENABLE
2335 /* queue check watchers, to be executed first */ 3060 /* queue check watchers, to be executed first */
2336 if (expect_false (checkcnt)) 3061 if (expect_false (checkcnt))
2337 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3062 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3063#endif
2338 3064
2339 EV_INVOKE_PENDING; 3065 EV_INVOKE_PENDING;
2340 } 3066 }
2341 while (expect_true ( 3067 while (expect_true (
2342 activecnt 3068 activecnt
2343 && !loop_done 3069 && !loop_done
2344 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3070 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2345 )); 3071 ));
2346 3072
2347 if (loop_done == EVUNLOOP_ONE) 3073 if (loop_done == EVBREAK_ONE)
2348 loop_done = EVUNLOOP_CANCEL; 3074 loop_done = EVBREAK_CANCEL;
2349 3075
2350#if EV_MINIMAL < 2 3076#if EV_FEATURE_API
2351 --loop_depth; 3077 --loop_depth;
2352#endif 3078#endif
2353} 3079}
2354 3080
2355void 3081void
2356ev_unloop (EV_P_ int how) 3082ev_break (EV_P_ int how)
2357{ 3083{
2358 loop_done = how; 3084 loop_done = how;
2359} 3085}
2360 3086
2361void 3087void
… …
2481 3207
2482 if (expect_false (ev_is_active (w))) 3208 if (expect_false (ev_is_active (w)))
2483 return; 3209 return;
2484 3210
2485 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3211 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2486 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3212 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2487 3213
2488 EV_FREQUENT_CHECK; 3214 EV_FREQUENT_CHECK;
2489 3215
2490 ev_start (EV_A_ (W)w, 1); 3216 ev_start (EV_A_ (W)w, 1);
2491 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3217 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2509 EV_FREQUENT_CHECK; 3235 EV_FREQUENT_CHECK;
2510 3236
2511 wlist_del (&anfds[w->fd].head, (WL)w); 3237 wlist_del (&anfds[w->fd].head, (WL)w);
2512 ev_stop (EV_A_ (W)w); 3238 ev_stop (EV_A_ (W)w);
2513 3239
2514 fd_change (EV_A_ w->fd, 1); 3240 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2515 3241
2516 EV_FREQUENT_CHECK; 3242 EV_FREQUENT_CHECK;
2517} 3243}
2518 3244
2519void noinline 3245void noinline
… …
2561 timers [active] = timers [timercnt + HEAP0]; 3287 timers [active] = timers [timercnt + HEAP0];
2562 adjustheap (timers, timercnt, active); 3288 adjustheap (timers, timercnt, active);
2563 } 3289 }
2564 } 3290 }
2565 3291
2566 EV_FREQUENT_CHECK;
2567
2568 ev_at (w) -= mn_now; 3292 ev_at (w) -= mn_now;
2569 3293
2570 ev_stop (EV_A_ (W)w); 3294 ev_stop (EV_A_ (W)w);
3295
3296 EV_FREQUENT_CHECK;
2571} 3297}
2572 3298
2573void noinline 3299void noinline
2574ev_timer_again (EV_P_ ev_timer *w) 3300ev_timer_again (EV_P_ ev_timer *w)
2575{ 3301{
… …
2611 if (w->reschedule_cb) 3337 if (w->reschedule_cb)
2612 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3338 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2613 else if (w->interval) 3339 else if (w->interval)
2614 { 3340 {
2615 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3341 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2616 /* this formula differs from the one in periodic_reify because we do not always round up */ 3342 periodic_recalc (EV_A_ w);
2617 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2618 } 3343 }
2619 else 3344 else
2620 ev_at (w) = w->offset; 3345 ev_at (w) = w->offset;
2621 3346
2622 EV_FREQUENT_CHECK; 3347 EV_FREQUENT_CHECK;
… …
2654 periodics [active] = periodics [periodiccnt + HEAP0]; 3379 periodics [active] = periodics [periodiccnt + HEAP0];
2655 adjustheap (periodics, periodiccnt, active); 3380 adjustheap (periodics, periodiccnt, active);
2656 } 3381 }
2657 } 3382 }
2658 3383
2659 EV_FREQUENT_CHECK;
2660
2661 ev_stop (EV_A_ (W)w); 3384 ev_stop (EV_A_ (W)w);
3385
3386 EV_FREQUENT_CHECK;
2662} 3387}
2663 3388
2664void noinline 3389void noinline
2665ev_periodic_again (EV_P_ ev_periodic *w) 3390ev_periodic_again (EV_P_ ev_periodic *w)
2666{ 3391{
… …
2671#endif 3396#endif
2672 3397
2673#ifndef SA_RESTART 3398#ifndef SA_RESTART
2674# define SA_RESTART 0 3399# define SA_RESTART 0
2675#endif 3400#endif
3401
3402#if EV_SIGNAL_ENABLE
2676 3403
2677void noinline 3404void noinline
2678ev_signal_start (EV_P_ ev_signal *w) 3405ev_signal_start (EV_P_ ev_signal *w)
2679{ 3406{
2680 if (expect_false (ev_is_active (w))) 3407 if (expect_false (ev_is_active (w)))
… …
2727 if (!((WL)w)->next) 3454 if (!((WL)w)->next)
2728# if EV_USE_SIGNALFD 3455# if EV_USE_SIGNALFD
2729 if (sigfd < 0) /*TODO*/ 3456 if (sigfd < 0) /*TODO*/
2730# endif 3457# endif
2731 { 3458 {
2732# if _WIN32 3459# ifdef _WIN32
3460 evpipe_init (EV_A);
3461
2733 signal (w->signum, ev_sighandler); 3462 signal (w->signum, ev_sighandler);
2734# else 3463# else
2735 struct sigaction sa; 3464 struct sigaction sa;
2736 3465
2737 evpipe_init (EV_A); 3466 evpipe_init (EV_A);
… …
2739 sa.sa_handler = ev_sighandler; 3468 sa.sa_handler = ev_sighandler;
2740 sigfillset (&sa.sa_mask); 3469 sigfillset (&sa.sa_mask);
2741 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3470 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2742 sigaction (w->signum, &sa, 0); 3471 sigaction (w->signum, &sa, 0);
2743 3472
3473 if (origflags & EVFLAG_NOSIGMASK)
3474 {
2744 sigemptyset (&sa.sa_mask); 3475 sigemptyset (&sa.sa_mask);
2745 sigaddset (&sa.sa_mask, w->signum); 3476 sigaddset (&sa.sa_mask, w->signum);
2746 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3477 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3478 }
2747#endif 3479#endif
2748 } 3480 }
2749 3481
2750 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2751} 3483}
… …
2768 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3500 signals [w->signum - 1].loop = 0; /* unattach from signal */
2769#endif 3501#endif
2770#if EV_USE_SIGNALFD 3502#if EV_USE_SIGNALFD
2771 if (sigfd >= 0) 3503 if (sigfd >= 0)
2772 { 3504 {
2773 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3505 sigset_t ss;
3506
3507 sigemptyset (&ss);
3508 sigaddset (&ss, w->signum);
2774 sigdelset (&sigfd_set, w->signum); 3509 sigdelset (&sigfd_set, w->signum);
3510
2775 signalfd (sigfd, &sigfd_set, 0); 3511 signalfd (sigfd, &sigfd_set, 0);
2776 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3512 sigprocmask (SIG_UNBLOCK, &ss, 0);
2777 /*TODO: maybe unblock signal? */
2778 } 3513 }
2779 else 3514 else
2780#endif 3515#endif
2781 signal (w->signum, SIG_DFL); 3516 signal (w->signum, SIG_DFL);
2782 } 3517 }
2783 3518
2784 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2785} 3520}
2786 3521
3522#endif
3523
3524#if EV_CHILD_ENABLE
3525
2787void 3526void
2788ev_child_start (EV_P_ ev_child *w) 3527ev_child_start (EV_P_ ev_child *w)
2789{ 3528{
2790#if EV_MULTIPLICITY 3529#if EV_MULTIPLICITY
2791 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3530 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
… …
2794 return; 3533 return;
2795 3534
2796 EV_FREQUENT_CHECK; 3535 EV_FREQUENT_CHECK;
2797 3536
2798 ev_start (EV_A_ (W)w, 1); 3537 ev_start (EV_A_ (W)w, 1);
2799 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3538 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2800 3539
2801 EV_FREQUENT_CHECK; 3540 EV_FREQUENT_CHECK;
2802} 3541}
2803 3542
2804void 3543void
… …
2808 if (expect_false (!ev_is_active (w))) 3547 if (expect_false (!ev_is_active (w)))
2809 return; 3548 return;
2810 3549
2811 EV_FREQUENT_CHECK; 3550 EV_FREQUENT_CHECK;
2812 3551
2813 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3552 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2814 ev_stop (EV_A_ (W)w); 3553 ev_stop (EV_A_ (W)w);
2815 3554
2816 EV_FREQUENT_CHECK; 3555 EV_FREQUENT_CHECK;
2817} 3556}
3557
3558#endif
2818 3559
2819#if EV_STAT_ENABLE 3560#if EV_STAT_ENABLE
2820 3561
2821# ifdef _WIN32 3562# ifdef _WIN32
2822# undef lstat 3563# undef lstat
… …
2828#define MIN_STAT_INTERVAL 0.1074891 3569#define MIN_STAT_INTERVAL 0.1074891
2829 3570
2830static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2831 3572
2832#if EV_USE_INOTIFY 3573#if EV_USE_INOTIFY
2833# define EV_INOTIFY_BUFSIZE 8192 3574
3575/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3576# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2834 3577
2835static void noinline 3578static void noinline
2836infy_add (EV_P_ ev_stat *w) 3579infy_add (EV_P_ ev_stat *w)
2837{ 3580{
2838 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3581 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2839 3582
2840 if (w->wd < 0) 3583 if (w->wd >= 0)
3584 {
3585 struct statfs sfs;
3586
3587 /* now local changes will be tracked by inotify, but remote changes won't */
3588 /* unless the filesystem is known to be local, we therefore still poll */
3589 /* also do poll on <2.6.25, but with normal frequency */
3590
3591 if (!fs_2625)
3592 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3593 else if (!statfs (w->path, &sfs)
3594 && (sfs.f_type == 0x1373 /* devfs */
3595 || sfs.f_type == 0xEF53 /* ext2/3 */
3596 || sfs.f_type == 0x3153464a /* jfs */
3597 || sfs.f_type == 0x52654973 /* reiser3 */
3598 || sfs.f_type == 0x01021994 /* tempfs */
3599 || sfs.f_type == 0x58465342 /* xfs */))
3600 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3601 else
3602 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2841 { 3603 }
3604 else
3605 {
3606 /* can't use inotify, continue to stat */
2842 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3607 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2843 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2844 3608
2845 /* monitor some parent directory for speedup hints */ 3609 /* if path is not there, monitor some parent directory for speedup hints */
2846 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3610 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2847 /* but an efficiency issue only */ 3611 /* but an efficiency issue only */
2848 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3612 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2849 { 3613 {
2850 char path [4096]; 3614 char path [4096];
… …
2860 if (!pend || pend == path) 3624 if (!pend || pend == path)
2861 break; 3625 break;
2862 3626
2863 *pend = 0; 3627 *pend = 0;
2864 w->wd = inotify_add_watch (fs_fd, path, mask); 3628 w->wd = inotify_add_watch (fs_fd, path, mask);
2865 } 3629 }
2866 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3630 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2867 } 3631 }
2868 } 3632 }
2869 3633
2870 if (w->wd >= 0) 3634 if (w->wd >= 0)
2871 {
2872 struct statfs sfs;
2873
2874 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3635 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2875 3636
2876 /* now local changes will be tracked by inotify, but remote changes won't */ 3637 /* now re-arm timer, if required */
2877 /* unless the filesystem it known to be local, we therefore still poll */ 3638 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2878 /* also do poll on <2.6.25, but with normal frequency */
2879
2880 if (fs_2625 && !statfs (w->path, &sfs))
2881 if (sfs.f_type == 0x1373 /* devfs */
2882 || sfs.f_type == 0xEF53 /* ext2/3 */
2883 || sfs.f_type == 0x3153464a /* jfs */
2884 || sfs.f_type == 0x52654973 /* reiser3 */
2885 || sfs.f_type == 0x01021994 /* tempfs */
2886 || sfs.f_type == 0x58465342 /* xfs */)
2887 return;
2888
2889 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2890 ev_timer_again (EV_A_ &w->timer); 3639 ev_timer_again (EV_A_ &w->timer);
2891 } 3640 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2892} 3641}
2893 3642
2894static void noinline 3643static void noinline
2895infy_del (EV_P_ ev_stat *w) 3644infy_del (EV_P_ ev_stat *w)
2896{ 3645{
… …
2899 3648
2900 if (wd < 0) 3649 if (wd < 0)
2901 return; 3650 return;
2902 3651
2903 w->wd = -2; 3652 w->wd = -2;
2904 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3653 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2905 wlist_del (&fs_hash [slot].head, (WL)w); 3654 wlist_del (&fs_hash [slot].head, (WL)w);
2906 3655
2907 /* remove this watcher, if others are watching it, they will rearm */ 3656 /* remove this watcher, if others are watching it, they will rearm */
2908 inotify_rm_watch (fs_fd, wd); 3657 inotify_rm_watch (fs_fd, wd);
2909} 3658}
… …
2911static void noinline 3660static void noinline
2912infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3661infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2913{ 3662{
2914 if (slot < 0) 3663 if (slot < 0)
2915 /* overflow, need to check for all hash slots */ 3664 /* overflow, need to check for all hash slots */
2916 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3665 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2917 infy_wd (EV_A_ slot, wd, ev); 3666 infy_wd (EV_A_ slot, wd, ev);
2918 else 3667 else
2919 { 3668 {
2920 WL w_; 3669 WL w_;
2921 3670
2922 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3671 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2923 { 3672 {
2924 ev_stat *w = (ev_stat *)w_; 3673 ev_stat *w = (ev_stat *)w_;
2925 w_ = w_->next; /* lets us remove this watcher and all before it */ 3674 w_ = w_->next; /* lets us remove this watcher and all before it */
2926 3675
2927 if (w->wd == wd || wd == -1) 3676 if (w->wd == wd || wd == -1)
2928 { 3677 {
2929 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3678 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2930 { 3679 {
2931 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3680 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2932 w->wd = -1; 3681 w->wd = -1;
2933 infy_add (EV_A_ w); /* re-add, no matter what */ 3682 infy_add (EV_A_ w); /* re-add, no matter what */
2934 } 3683 }
2935 3684
2936 stat_timer_cb (EV_A_ &w->timer, 0); 3685 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2941 3690
2942static void 3691static void
2943infy_cb (EV_P_ ev_io *w, int revents) 3692infy_cb (EV_P_ ev_io *w, int revents)
2944{ 3693{
2945 char buf [EV_INOTIFY_BUFSIZE]; 3694 char buf [EV_INOTIFY_BUFSIZE];
2946 struct inotify_event *ev = (struct inotify_event *)buf;
2947 int ofs; 3695 int ofs;
2948 int len = read (fs_fd, buf, sizeof (buf)); 3696 int len = read (fs_fd, buf, sizeof (buf));
2949 3697
2950 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3698 for (ofs = 0; ofs < len; )
3699 {
3700 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2951 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3701 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3702 ofs += sizeof (struct inotify_event) + ev->len;
3703 }
2952} 3704}
2953 3705
2954inline_size void 3706inline_size void ecb_cold
2955check_2625 (EV_P) 3707ev_check_2625 (EV_P)
2956{ 3708{
2957 /* kernels < 2.6.25 are borked 3709 /* kernels < 2.6.25 are borked
2958 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3710 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2959 */ 3711 */
2960 struct utsname buf; 3712 if (ev_linux_version () < 0x020619)
2961 int major, minor, micro;
2962
2963 if (uname (&buf))
2964 return; 3713 return;
2965 3714
2966 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2967 return;
2968
2969 if (major < 2
2970 || (major == 2 && minor < 6)
2971 || (major == 2 && minor == 6 && micro < 25))
2972 return;
2973
2974 fs_2625 = 1; 3715 fs_2625 = 1;
3716}
3717
3718inline_size int
3719infy_newfd (void)
3720{
3721#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3722 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3723 if (fd >= 0)
3724 return fd;
3725#endif
3726 return inotify_init ();
2975} 3727}
2976 3728
2977inline_size void 3729inline_size void
2978infy_init (EV_P) 3730infy_init (EV_P)
2979{ 3731{
2980 if (fs_fd != -2) 3732 if (fs_fd != -2)
2981 return; 3733 return;
2982 3734
2983 fs_fd = -1; 3735 fs_fd = -1;
2984 3736
2985 check_2625 (EV_A); 3737 ev_check_2625 (EV_A);
2986 3738
2987 fs_fd = inotify_init (); 3739 fs_fd = infy_newfd ();
2988 3740
2989 if (fs_fd >= 0) 3741 if (fs_fd >= 0)
2990 { 3742 {
3743 fd_intern (fs_fd);
2991 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3744 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2992 ev_set_priority (&fs_w, EV_MAXPRI); 3745 ev_set_priority (&fs_w, EV_MAXPRI);
2993 ev_io_start (EV_A_ &fs_w); 3746 ev_io_start (EV_A_ &fs_w);
3747 ev_unref (EV_A);
2994 } 3748 }
2995} 3749}
2996 3750
2997inline_size void 3751inline_size void
2998infy_fork (EV_P) 3752infy_fork (EV_P)
… …
3000 int slot; 3754 int slot;
3001 3755
3002 if (fs_fd < 0) 3756 if (fs_fd < 0)
3003 return; 3757 return;
3004 3758
3759 ev_ref (EV_A);
3760 ev_io_stop (EV_A_ &fs_w);
3005 close (fs_fd); 3761 close (fs_fd);
3006 fs_fd = inotify_init (); 3762 fs_fd = infy_newfd ();
3007 3763
3764 if (fs_fd >= 0)
3765 {
3766 fd_intern (fs_fd);
3767 ev_io_set (&fs_w, fs_fd, EV_READ);
3768 ev_io_start (EV_A_ &fs_w);
3769 ev_unref (EV_A);
3770 }
3771
3008 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3772 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3009 { 3773 {
3010 WL w_ = fs_hash [slot].head; 3774 WL w_ = fs_hash [slot].head;
3011 fs_hash [slot].head = 0; 3775 fs_hash [slot].head = 0;
3012 3776
3013 while (w_) 3777 while (w_)
… …
3018 w->wd = -1; 3782 w->wd = -1;
3019 3783
3020 if (fs_fd >= 0) 3784 if (fs_fd >= 0)
3021 infy_add (EV_A_ w); /* re-add, no matter what */ 3785 infy_add (EV_A_ w); /* re-add, no matter what */
3022 else 3786 else
3787 {
3788 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3789 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3023 ev_timer_again (EV_A_ &w->timer); 3790 ev_timer_again (EV_A_ &w->timer);
3791 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3792 }
3024 } 3793 }
3025 } 3794 }
3026} 3795}
3027 3796
3028#endif 3797#endif
… …
3045static void noinline 3814static void noinline
3046stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3815stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3047{ 3816{
3048 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3817 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3049 3818
3050 /* we copy this here each the time so that */ 3819 ev_statdata prev = w->attr;
3051 /* prev has the old value when the callback gets invoked */
3052 w->prev = w->attr;
3053 ev_stat_stat (EV_A_ w); 3820 ev_stat_stat (EV_A_ w);
3054 3821
3055 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3822 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3056 if ( 3823 if (
3057 w->prev.st_dev != w->attr.st_dev 3824 prev.st_dev != w->attr.st_dev
3058 || w->prev.st_ino != w->attr.st_ino 3825 || prev.st_ino != w->attr.st_ino
3059 || w->prev.st_mode != w->attr.st_mode 3826 || prev.st_mode != w->attr.st_mode
3060 || w->prev.st_nlink != w->attr.st_nlink 3827 || prev.st_nlink != w->attr.st_nlink
3061 || w->prev.st_uid != w->attr.st_uid 3828 || prev.st_uid != w->attr.st_uid
3062 || w->prev.st_gid != w->attr.st_gid 3829 || prev.st_gid != w->attr.st_gid
3063 || w->prev.st_rdev != w->attr.st_rdev 3830 || prev.st_rdev != w->attr.st_rdev
3064 || w->prev.st_size != w->attr.st_size 3831 || prev.st_size != w->attr.st_size
3065 || w->prev.st_atime != w->attr.st_atime 3832 || prev.st_atime != w->attr.st_atime
3066 || w->prev.st_mtime != w->attr.st_mtime 3833 || prev.st_mtime != w->attr.st_mtime
3067 || w->prev.st_ctime != w->attr.st_ctime 3834 || prev.st_ctime != w->attr.st_ctime
3068 ) { 3835 ) {
3836 /* we only update w->prev on actual differences */
3837 /* in case we test more often than invoke the callback, */
3838 /* to ensure that prev is always different to attr */
3839 w->prev = prev;
3840
3069 #if EV_USE_INOTIFY 3841 #if EV_USE_INOTIFY
3070 if (fs_fd >= 0) 3842 if (fs_fd >= 0)
3071 { 3843 {
3072 infy_del (EV_A_ w); 3844 infy_del (EV_A_ w);
3073 infy_add (EV_A_ w); 3845 infy_add (EV_A_ w);
… …
3098 3870
3099 if (fs_fd >= 0) 3871 if (fs_fd >= 0)
3100 infy_add (EV_A_ w); 3872 infy_add (EV_A_ w);
3101 else 3873 else
3102#endif 3874#endif
3875 {
3103 ev_timer_again (EV_A_ &w->timer); 3876 ev_timer_again (EV_A_ &w->timer);
3877 ev_unref (EV_A);
3878 }
3104 3879
3105 ev_start (EV_A_ (W)w, 1); 3880 ev_start (EV_A_ (W)w, 1);
3106 3881
3107 EV_FREQUENT_CHECK; 3882 EV_FREQUENT_CHECK;
3108} 3883}
… …
3117 EV_FREQUENT_CHECK; 3892 EV_FREQUENT_CHECK;
3118 3893
3119#if EV_USE_INOTIFY 3894#if EV_USE_INOTIFY
3120 infy_del (EV_A_ w); 3895 infy_del (EV_A_ w);
3121#endif 3896#endif
3897
3898 if (ev_is_active (&w->timer))
3899 {
3900 ev_ref (EV_A);
3122 ev_timer_stop (EV_A_ &w->timer); 3901 ev_timer_stop (EV_A_ &w->timer);
3902 }
3123 3903
3124 ev_stop (EV_A_ (W)w); 3904 ev_stop (EV_A_ (W)w);
3125 3905
3126 EV_FREQUENT_CHECK; 3906 EV_FREQUENT_CHECK;
3127} 3907}
… …
3172 3952
3173 EV_FREQUENT_CHECK; 3953 EV_FREQUENT_CHECK;
3174} 3954}
3175#endif 3955#endif
3176 3956
3957#if EV_PREPARE_ENABLE
3177void 3958void
3178ev_prepare_start (EV_P_ ev_prepare *w) 3959ev_prepare_start (EV_P_ ev_prepare *w)
3179{ 3960{
3180 if (expect_false (ev_is_active (w))) 3961 if (expect_false (ev_is_active (w)))
3181 return; 3962 return;
… …
3207 3988
3208 ev_stop (EV_A_ (W)w); 3989 ev_stop (EV_A_ (W)w);
3209 3990
3210 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
3211} 3992}
3993#endif
3212 3994
3995#if EV_CHECK_ENABLE
3213void 3996void
3214ev_check_start (EV_P_ ev_check *w) 3997ev_check_start (EV_P_ ev_check *w)
3215{ 3998{
3216 if (expect_false (ev_is_active (w))) 3999 if (expect_false (ev_is_active (w)))
3217 return; 4000 return;
… …
3243 4026
3244 ev_stop (EV_A_ (W)w); 4027 ev_stop (EV_A_ (W)w);
3245 4028
3246 EV_FREQUENT_CHECK; 4029 EV_FREQUENT_CHECK;
3247} 4030}
4031#endif
3248 4032
3249#if EV_EMBED_ENABLE 4033#if EV_EMBED_ENABLE
3250void noinline 4034void noinline
3251ev_embed_sweep (EV_P_ ev_embed *w) 4035ev_embed_sweep (EV_P_ ev_embed *w)
3252{ 4036{
3253 ev_loop (w->other, EVLOOP_NONBLOCK); 4037 ev_run (w->other, EVRUN_NOWAIT);
3254} 4038}
3255 4039
3256static void 4040static void
3257embed_io_cb (EV_P_ ev_io *io, int revents) 4041embed_io_cb (EV_P_ ev_io *io, int revents)
3258{ 4042{
3259 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4043 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3260 4044
3261 if (ev_cb (w)) 4045 if (ev_cb (w))
3262 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4046 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3263 else 4047 else
3264 ev_loop (w->other, EVLOOP_NONBLOCK); 4048 ev_run (w->other, EVRUN_NOWAIT);
3265} 4049}
3266 4050
3267static void 4051static void
3268embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4052embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3269{ 4053{
… …
3273 EV_P = w->other; 4057 EV_P = w->other;
3274 4058
3275 while (fdchangecnt) 4059 while (fdchangecnt)
3276 { 4060 {
3277 fd_reify (EV_A); 4061 fd_reify (EV_A);
3278 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4062 ev_run (EV_A_ EVRUN_NOWAIT);
3279 } 4063 }
3280 } 4064 }
3281} 4065}
3282 4066
3283static void 4067static void
… …
3289 4073
3290 { 4074 {
3291 EV_P = w->other; 4075 EV_P = w->other;
3292 4076
3293 ev_loop_fork (EV_A); 4077 ev_loop_fork (EV_A);
3294 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4078 ev_run (EV_A_ EVRUN_NOWAIT);
3295 } 4079 }
3296 4080
3297 ev_embed_start (EV_A_ w); 4081 ev_embed_start (EV_A_ w);
3298} 4082}
3299 4083
… …
3347 4131
3348 ev_io_stop (EV_A_ &w->io); 4132 ev_io_stop (EV_A_ &w->io);
3349 ev_prepare_stop (EV_A_ &w->prepare); 4133 ev_prepare_stop (EV_A_ &w->prepare);
3350 ev_fork_stop (EV_A_ &w->fork); 4134 ev_fork_stop (EV_A_ &w->fork);
3351 4135
4136 ev_stop (EV_A_ (W)w);
4137
3352 EV_FREQUENT_CHECK; 4138 EV_FREQUENT_CHECK;
3353} 4139}
3354#endif 4140#endif
3355 4141
3356#if EV_FORK_ENABLE 4142#if EV_FORK_ENABLE
… …
3389 4175
3390 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
3391} 4177}
3392#endif 4178#endif
3393 4179
4180#if EV_CLEANUP_ENABLE
4181void
4182ev_cleanup_start (EV_P_ ev_cleanup *w)
4183{
4184 if (expect_false (ev_is_active (w)))
4185 return;
4186
4187 EV_FREQUENT_CHECK;
4188
4189 ev_start (EV_A_ (W)w, ++cleanupcnt);
4190 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4191 cleanups [cleanupcnt - 1] = w;
4192
4193 /* cleanup watchers should never keep a refcount on the loop */
4194 ev_unref (EV_A);
4195 EV_FREQUENT_CHECK;
4196}
4197
4198void
4199ev_cleanup_stop (EV_P_ ev_cleanup *w)
4200{
4201 clear_pending (EV_A_ (W)w);
4202 if (expect_false (!ev_is_active (w)))
4203 return;
4204
4205 EV_FREQUENT_CHECK;
4206 ev_ref (EV_A);
4207
4208 {
4209 int active = ev_active (w);
4210
4211 cleanups [active - 1] = cleanups [--cleanupcnt];
4212 ev_active (cleanups [active - 1]) = active;
4213 }
4214
4215 ev_stop (EV_A_ (W)w);
4216
4217 EV_FREQUENT_CHECK;
4218}
4219#endif
4220
3394#if EV_ASYNC_ENABLE 4221#if EV_ASYNC_ENABLE
3395void 4222void
3396ev_async_start (EV_P_ ev_async *w) 4223ev_async_start (EV_P_ ev_async *w)
3397{ 4224{
3398 if (expect_false (ev_is_active (w))) 4225 if (expect_false (ev_is_active (w)))
3399 return; 4226 return;
4227
4228 w->sent = 0;
3400 4229
3401 evpipe_init (EV_A); 4230 evpipe_init (EV_A);
3402 4231
3403 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3404 4233
… …
3482{ 4311{
3483 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4312 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3484 4313
3485 if (expect_false (!once)) 4314 if (expect_false (!once))
3486 { 4315 {
3487 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4316 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3488 return; 4317 return;
3489 } 4318 }
3490 4319
3491 once->cb = cb; 4320 once->cb = cb;
3492 once->arg = arg; 4321 once->arg = arg;
… …
3507} 4336}
3508 4337
3509/*****************************************************************************/ 4338/*****************************************************************************/
3510 4339
3511#if EV_WALK_ENABLE 4340#if EV_WALK_ENABLE
3512void 4341void ecb_cold
3513ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4342ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3514{ 4343{
3515 int i, j; 4344 int i, j;
3516 ev_watcher_list *wl, *wn; 4345 ev_watcher_list *wl, *wn;
3517 4346
… …
3561 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4390 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3562#endif 4391#endif
3563 4392
3564#if EV_IDLE_ENABLE 4393#if EV_IDLE_ENABLE
3565 if (types & EV_IDLE) 4394 if (types & EV_IDLE)
3566 for (j = NUMPRI; i--; ) 4395 for (j = NUMPRI; j--; )
3567 for (i = idlecnt [j]; i--; ) 4396 for (i = idlecnt [j]; i--; )
3568 cb (EV_A_ EV_IDLE, idles [j][i]); 4397 cb (EV_A_ EV_IDLE, idles [j][i]);
3569#endif 4398#endif
3570 4399
3571#if EV_FORK_ENABLE 4400#if EV_FORK_ENABLE
… …
3579 if (types & EV_ASYNC) 4408 if (types & EV_ASYNC)
3580 for (i = asynccnt; i--; ) 4409 for (i = asynccnt; i--; )
3581 cb (EV_A_ EV_ASYNC, asyncs [i]); 4410 cb (EV_A_ EV_ASYNC, asyncs [i]);
3582#endif 4411#endif
3583 4412
4413#if EV_PREPARE_ENABLE
3584 if (types & EV_PREPARE) 4414 if (types & EV_PREPARE)
3585 for (i = preparecnt; i--; ) 4415 for (i = preparecnt; i--; )
3586#if EV_EMBED_ENABLE 4416# if EV_EMBED_ENABLE
3587 if (ev_cb (prepares [i]) != embed_prepare_cb) 4417 if (ev_cb (prepares [i]) != embed_prepare_cb)
3588#endif 4418# endif
3589 cb (EV_A_ EV_PREPARE, prepares [i]); 4419 cb (EV_A_ EV_PREPARE, prepares [i]);
4420#endif
3590 4421
4422#if EV_CHECK_ENABLE
3591 if (types & EV_CHECK) 4423 if (types & EV_CHECK)
3592 for (i = checkcnt; i--; ) 4424 for (i = checkcnt; i--; )
3593 cb (EV_A_ EV_CHECK, checks [i]); 4425 cb (EV_A_ EV_CHECK, checks [i]);
4426#endif
3594 4427
4428#if EV_SIGNAL_ENABLE
3595 if (types & EV_SIGNAL) 4429 if (types & EV_SIGNAL)
3596 for (i = 0; i < EV_NSIG - 1; ++i) 4430 for (i = 0; i < EV_NSIG - 1; ++i)
3597 for (wl = signals [i].head; wl; ) 4431 for (wl = signals [i].head; wl; )
3598 { 4432 {
3599 wn = wl->next; 4433 wn = wl->next;
3600 cb (EV_A_ EV_SIGNAL, wl); 4434 cb (EV_A_ EV_SIGNAL, wl);
3601 wl = wn; 4435 wl = wn;
3602 } 4436 }
4437#endif
3603 4438
4439#if EV_CHILD_ENABLE
3604 if (types & EV_CHILD) 4440 if (types & EV_CHILD)
3605 for (i = EV_PID_HASHSIZE; i--; ) 4441 for (i = (EV_PID_HASHSIZE); i--; )
3606 for (wl = childs [i]; wl; ) 4442 for (wl = childs [i]; wl; )
3607 { 4443 {
3608 wn = wl->next; 4444 wn = wl->next;
3609 cb (EV_A_ EV_CHILD, wl); 4445 cb (EV_A_ EV_CHILD, wl);
3610 wl = wn; 4446 wl = wn;
3611 } 4447 }
4448#endif
3612/* EV_STAT 0x00001000 /* stat data changed */ 4449/* EV_STAT 0x00001000 /* stat data changed */
3613/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4450/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3614} 4451}
3615#endif 4452#endif
3616 4453
3617#if EV_MULTIPLICITY 4454#if EV_MULTIPLICITY
3618 #include "ev_wrap.h" 4455 #include "ev_wrap.h"
3619#endif 4456#endif
3620 4457
3621#ifdef __cplusplus
3622}
3623#endif
3624

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