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Comparing libev/ev.c (file contents):
Revision 1.311 by root, Wed Jul 29 09:36:05 2009 UTC vs.
Revision 1.408 by root, Fri Jan 27 22:28:49 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
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 #elif defined(__s390__) || defined(__s390x__)
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
567 #endif
568 #endif
569#endif
570
571#ifndef ECB_MEMORY_FENCE
572 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
573 #define ECB_MEMORY_FENCE __sync_synchronize ()
574 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
575 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
576 #elif _MSC_VER >= 1400 /* VC++ 2005 */
577 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
578 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
579 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
580 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
581 #elif defined(_WIN32)
582 #include <WinNT.h>
583 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
584 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
585 #include <mbarrier.h>
586 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
587 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
588 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
589 #endif
590#endif
591
592#ifndef ECB_MEMORY_FENCE
593 #if !ECB_AVOID_PTHREADS
594 /*
595 * if you get undefined symbol references to pthread_mutex_lock,
596 * or failure to find pthread.h, then you should implement
597 * the ECB_MEMORY_FENCE operations for your cpu/compiler
598 * OR provide pthread.h and link against the posix thread library
599 * of your system.
600 */
601 #include <pthread.h>
602 #define ECB_NEEDS_PTHREADS 1
603 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
604
605 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
606 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
607 #endif
608#endif
609
610#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
611 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
612#endif
613
614#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
615 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
616#endif
617
618/*****************************************************************************/
619
620#define ECB_C99 (__STDC_VERSION__ >= 199901L)
621
622#if __cplusplus
623 #define ecb_inline static inline
624#elif ECB_GCC_VERSION(2,5)
625 #define ecb_inline static __inline__
626#elif ECB_C99
627 #define ecb_inline static inline
628#else
629 #define ecb_inline static
630#endif
631
632#if ECB_GCC_VERSION(3,3)
633 #define ecb_restrict __restrict__
634#elif ECB_C99
635 #define ecb_restrict restrict
636#else
637 #define ecb_restrict
638#endif
639
640typedef int ecb_bool;
641
642#define ECB_CONCAT_(a, b) a ## b
643#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
644#define ECB_STRINGIFY_(a) # a
645#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
646
647#define ecb_function_ ecb_inline
648
649#if ECB_GCC_VERSION(3,1)
650 #define ecb_attribute(attrlist) __attribute__(attrlist)
651 #define ecb_is_constant(expr) __builtin_constant_p (expr)
652 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
653 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
654#else
655 #define ecb_attribute(attrlist)
656 #define ecb_is_constant(expr) 0
657 #define ecb_expect(expr,value) (expr)
658 #define ecb_prefetch(addr,rw,locality)
659#endif
660
661/* no emulation for ecb_decltype */
662#if ECB_GCC_VERSION(4,5)
663 #define ecb_decltype(x) __decltype(x)
664#elif ECB_GCC_VERSION(3,0)
665 #define ecb_decltype(x) __typeof(x)
666#endif
667
668#define ecb_noinline ecb_attribute ((__noinline__))
669#define ecb_noreturn ecb_attribute ((__noreturn__))
670#define ecb_unused ecb_attribute ((__unused__))
671#define ecb_const ecb_attribute ((__const__))
672#define ecb_pure ecb_attribute ((__pure__))
673
674#if ECB_GCC_VERSION(4,3)
675 #define ecb_artificial ecb_attribute ((__artificial__))
676 #define ecb_hot ecb_attribute ((__hot__))
677 #define ecb_cold ecb_attribute ((__cold__))
678#else
679 #define ecb_artificial
680 #define ecb_hot
681 #define ecb_cold
682#endif
683
684/* put around conditional expressions if you are very sure that the */
685/* expression is mostly true or mostly false. note that these return */
686/* booleans, not the expression. */
443#define expect_false(expr) expect ((expr) != 0, 0) 687#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
444#define expect_true(expr) expect ((expr) != 0, 1) 688#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
689/* for compatibility to the rest of the world */
690#define ecb_likely(expr) ecb_expect_true (expr)
691#define ecb_unlikely(expr) ecb_expect_false (expr)
692
693/* count trailing zero bits and count # of one bits */
694#if ECB_GCC_VERSION(3,4)
695 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
696 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
697 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
698 #define ecb_ctz32(x) __builtin_ctz (x)
699 #define ecb_ctz64(x) __builtin_ctzll (x)
700 #define ecb_popcount32(x) __builtin_popcount (x)
701 /* no popcountll */
702#else
703 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
704 ecb_function_ int
705 ecb_ctz32 (uint32_t x)
706 {
707 int r = 0;
708
709 x &= ~x + 1; /* this isolates the lowest bit */
710
711#if ECB_branchless_on_i386
712 r += !!(x & 0xaaaaaaaa) << 0;
713 r += !!(x & 0xcccccccc) << 1;
714 r += !!(x & 0xf0f0f0f0) << 2;
715 r += !!(x & 0xff00ff00) << 3;
716 r += !!(x & 0xffff0000) << 4;
717#else
718 if (x & 0xaaaaaaaa) r += 1;
719 if (x & 0xcccccccc) r += 2;
720 if (x & 0xf0f0f0f0) r += 4;
721 if (x & 0xff00ff00) r += 8;
722 if (x & 0xffff0000) r += 16;
723#endif
724
725 return r;
726 }
727
728 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
729 ecb_function_ int
730 ecb_ctz64 (uint64_t x)
731 {
732 int shift = x & 0xffffffffU ? 0 : 32;
733 return ecb_ctz32 (x >> shift) + shift;
734 }
735
736 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
737 ecb_function_ int
738 ecb_popcount32 (uint32_t x)
739 {
740 x -= (x >> 1) & 0x55555555;
741 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
742 x = ((x >> 4) + x) & 0x0f0f0f0f;
743 x *= 0x01010101;
744
745 return x >> 24;
746 }
747
748 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
749 ecb_function_ int ecb_ld32 (uint32_t x)
750 {
751 int r = 0;
752
753 if (x >> 16) { x >>= 16; r += 16; }
754 if (x >> 8) { x >>= 8; r += 8; }
755 if (x >> 4) { x >>= 4; r += 4; }
756 if (x >> 2) { x >>= 2; r += 2; }
757 if (x >> 1) { r += 1; }
758
759 return r;
760 }
761
762 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
763 ecb_function_ int ecb_ld64 (uint64_t x)
764 {
765 int r = 0;
766
767 if (x >> 32) { x >>= 32; r += 32; }
768
769 return r + ecb_ld32 (x);
770 }
771#endif
772
773ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
774ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
775{
776 return ( (x * 0x0802U & 0x22110U)
777 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
778}
779
780ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
781ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
782{
783 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
784 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
785 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
786 x = ( x >> 8 ) | ( x << 8);
787
788 return x;
789}
790
791ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
792ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
793{
794 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
795 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
796 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
797 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
798 x = ( x >> 16 ) | ( x << 16);
799
800 return x;
801}
802
803/* popcount64 is only available on 64 bit cpus as gcc builtin */
804/* so for this version we are lazy */
805ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
806ecb_function_ int
807ecb_popcount64 (uint64_t x)
808{
809 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
810}
811
812ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
813ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
814ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
815ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
816ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
817ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
818ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
819ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
820
821ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
822ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
823ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
824ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
825ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
826ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
827ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
828ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
829
830#if ECB_GCC_VERSION(4,3)
831 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
832 #define ecb_bswap32(x) __builtin_bswap32 (x)
833 #define ecb_bswap64(x) __builtin_bswap64 (x)
834#else
835 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
836 ecb_function_ uint16_t
837 ecb_bswap16 (uint16_t x)
838 {
839 return ecb_rotl16 (x, 8);
840 }
841
842 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
843 ecb_function_ uint32_t
844 ecb_bswap32 (uint32_t x)
845 {
846 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
847 }
848
849 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
850 ecb_function_ uint64_t
851 ecb_bswap64 (uint64_t x)
852 {
853 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
854 }
855#endif
856
857#if ECB_GCC_VERSION(4,5)
858 #define ecb_unreachable() __builtin_unreachable ()
859#else
860 /* this seems to work fine, but gcc always emits a warning for it :/ */
861 ecb_inline void ecb_unreachable (void) ecb_noreturn;
862 ecb_inline void ecb_unreachable (void) { }
863#endif
864
865/* try to tell the compiler that some condition is definitely true */
866#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
867
868ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
869ecb_inline unsigned char
870ecb_byteorder_helper (void)
871{
872 const uint32_t u = 0x11223344;
873 return *(unsigned char *)&u;
874}
875
876ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
877ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
878ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
879ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
880
881#if ECB_GCC_VERSION(3,0) || ECB_C99
882 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
883#else
884 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
885#endif
886
887#if __cplusplus
888 template<typename T>
889 static inline T ecb_div_rd (T val, T div)
890 {
891 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
892 }
893 template<typename T>
894 static inline T ecb_div_ru (T val, T div)
895 {
896 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
897 }
898#else
899 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
900 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
901#endif
902
903#if ecb_cplusplus_does_not_suck
904 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
905 template<typename T, int N>
906 static inline int ecb_array_length (const T (&arr)[N])
907 {
908 return N;
909 }
910#else
911 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
912#endif
913
914#endif
915
916/* ECB.H END */
917
918#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
919/* if your architecture doesn't need memory fences, e.g. because it is
920 * single-cpu/core, or if you use libev in a project that doesn't use libev
921 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
922 * libev, in which cases the memory fences become nops.
923 * alternatively, you can remove this #error and link against libpthread,
924 * which will then provide the memory fences.
925 */
926# error "memory fences not defined for your architecture, please report"
927#endif
928
929#ifndef ECB_MEMORY_FENCE
930# define ECB_MEMORY_FENCE do { } while (0)
931# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
932# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
933#endif
934
935#define expect_false(cond) ecb_expect_false (cond)
936#define expect_true(cond) ecb_expect_true (cond)
937#define noinline ecb_noinline
938
445#define inline_size static inline 939#define inline_size ecb_inline
446 940
447#if EV_MINIMAL 941#if EV_FEATURE_CODE
942# define inline_speed ecb_inline
943#else
448# define inline_speed static noinline 944# define inline_speed static noinline
449#else
450# define inline_speed static inline
451#endif 945#endif
452 946
453#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 947#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
454 948
455#if EV_MINPRI == EV_MAXPRI 949#if EV_MINPRI == EV_MAXPRI
… …
468#define ev_active(w) ((W)(w))->active 962#define ev_active(w) ((W)(w))->active
469#define ev_at(w) ((WT)(w))->at 963#define ev_at(w) ((WT)(w))->at
470 964
471#if EV_USE_REALTIME 965#if EV_USE_REALTIME
472/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 966/* sig_atomic_t is used to avoid per-thread variables or locking but still */
473/* giving it a reasonably high chance of working on typical architetcures */ 967/* giving it a reasonably high chance of working on typical architectures */
474static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 968static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
475#endif 969#endif
476 970
477#if EV_USE_MONOTONIC 971#if EV_USE_MONOTONIC
478static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 972static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
479#endif 973#endif
480 974
975#ifndef EV_FD_TO_WIN32_HANDLE
976# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
977#endif
978#ifndef EV_WIN32_HANDLE_TO_FD
979# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
980#endif
981#ifndef EV_WIN32_CLOSE_FD
982# define EV_WIN32_CLOSE_FD(fd) close (fd)
983#endif
984
481#ifdef _WIN32 985#ifdef _WIN32
482# include "ev_win32.c" 986# include "ev_win32.c"
483#endif 987#endif
484 988
485/*****************************************************************************/ 989/*****************************************************************************/
486 990
991/* define a suitable floor function (only used by periodics atm) */
992
993#if EV_USE_FLOOR
994# include <math.h>
995# define ev_floor(v) floor (v)
996#else
997
998#include <float.h>
999
1000/* a floor() replacement function, should be independent of ev_tstamp type */
1001static ev_tstamp noinline
1002ev_floor (ev_tstamp v)
1003{
1004 /* the choice of shift factor is not terribly important */
1005#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1007#else
1008 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1009#endif
1010
1011 /* argument too large for an unsigned long? */
1012 if (expect_false (v >= shift))
1013 {
1014 ev_tstamp f;
1015
1016 if (v == v - 1.)
1017 return v; /* very large number */
1018
1019 f = shift * ev_floor (v * (1. / shift));
1020 return f + ev_floor (v - f);
1021 }
1022
1023 /* special treatment for negative args? */
1024 if (expect_false (v < 0.))
1025 {
1026 ev_tstamp f = -ev_floor (-v);
1027
1028 return f - (f == v ? 0 : 1);
1029 }
1030
1031 /* fits into an unsigned long */
1032 return (unsigned long)v;
1033}
1034
1035#endif
1036
1037/*****************************************************************************/
1038
1039#ifdef __linux
1040# include <sys/utsname.h>
1041#endif
1042
1043static unsigned int noinline ecb_cold
1044ev_linux_version (void)
1045{
1046#ifdef __linux
1047 unsigned int v = 0;
1048 struct utsname buf;
1049 int i;
1050 char *p = buf.release;
1051
1052 if (uname (&buf))
1053 return 0;
1054
1055 for (i = 3+1; --i; )
1056 {
1057 unsigned int c = 0;
1058
1059 for (;;)
1060 {
1061 if (*p >= '0' && *p <= '9')
1062 c = c * 10 + *p++ - '0';
1063 else
1064 {
1065 p += *p == '.';
1066 break;
1067 }
1068 }
1069
1070 v = (v << 8) | c;
1071 }
1072
1073 return v;
1074#else
1075 return 0;
1076#endif
1077}
1078
1079/*****************************************************************************/
1080
1081#if EV_AVOID_STDIO
1082static void noinline ecb_cold
1083ev_printerr (const char *msg)
1084{
1085 write (STDERR_FILENO, msg, strlen (msg));
1086}
1087#endif
1088
487static void (*syserr_cb)(const char *msg); 1089static void (*syserr_cb)(const char *msg);
488 1090
489void 1091void ecb_cold
490ev_set_syserr_cb (void (*cb)(const char *msg)) 1092ev_set_syserr_cb (void (*cb)(const char *msg))
491{ 1093{
492 syserr_cb = cb; 1094 syserr_cb = cb;
493} 1095}
494 1096
495static void noinline 1097static void noinline ecb_cold
496ev_syserr (const char *msg) 1098ev_syserr (const char *msg)
497{ 1099{
498 if (!msg) 1100 if (!msg)
499 msg = "(libev) system error"; 1101 msg = "(libev) system error";
500 1102
501 if (syserr_cb) 1103 if (syserr_cb)
502 syserr_cb (msg); 1104 syserr_cb (msg);
503 else 1105 else
504 { 1106 {
1107#if EV_AVOID_STDIO
1108 ev_printerr (msg);
1109 ev_printerr (": ");
1110 ev_printerr (strerror (errno));
1111 ev_printerr ("\n");
1112#else
505 perror (msg); 1113 perror (msg);
1114#endif
506 abort (); 1115 abort ();
507 } 1116 }
508} 1117}
509 1118
510static void * 1119static void *
511ev_realloc_emul (void *ptr, long size) 1120ev_realloc_emul (void *ptr, long size)
512{ 1121{
1122#if __GLIBC__
1123 return realloc (ptr, size);
1124#else
513 /* some systems, notably openbsd and darwin, fail to properly 1125 /* some systems, notably openbsd and darwin, fail to properly
514 * implement realloc (x, 0) (as required by both ansi c-98 and 1126 * implement realloc (x, 0) (as required by both ansi c-89 and
515 * the single unix specification, so work around them here. 1127 * the single unix specification, so work around them here.
516 */ 1128 */
517 1129
518 if (size) 1130 if (size)
519 return realloc (ptr, size); 1131 return realloc (ptr, size);
520 1132
521 free (ptr); 1133 free (ptr);
522 return 0; 1134 return 0;
1135#endif
523} 1136}
524 1137
525static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1138static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
526 1139
527void 1140void ecb_cold
528ev_set_allocator (void *(*cb)(void *ptr, long size)) 1141ev_set_allocator (void *(*cb)(void *ptr, long size))
529{ 1142{
530 alloc = cb; 1143 alloc = cb;
531} 1144}
532 1145
… …
535{ 1148{
536 ptr = alloc (ptr, size); 1149 ptr = alloc (ptr, size);
537 1150
538 if (!ptr && size) 1151 if (!ptr && size)
539 { 1152 {
1153#if EV_AVOID_STDIO
1154 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1155#else
540 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1156 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1157#endif
541 abort (); 1158 abort ();
542 } 1159 }
543 1160
544 return ptr; 1161 return ptr;
545} 1162}
… …
561 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1178 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
562 unsigned char unused; 1179 unsigned char unused;
563#if EV_USE_EPOLL 1180#if EV_USE_EPOLL
564 unsigned int egen; /* generation counter to counter epoll bugs */ 1181 unsigned int egen; /* generation counter to counter epoll bugs */
565#endif 1182#endif
566#if EV_SELECT_IS_WINSOCKET 1183#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
567 SOCKET handle; 1184 SOCKET handle;
1185#endif
1186#if EV_USE_IOCP
1187 OVERLAPPED or, ow;
568#endif 1188#endif
569} ANFD; 1189} ANFD;
570 1190
571/* stores the pending event set for a given watcher */ 1191/* stores the pending event set for a given watcher */
572typedef struct 1192typedef struct
… …
614 #undef VAR 1234 #undef VAR
615 }; 1235 };
616 #include "ev_wrap.h" 1236 #include "ev_wrap.h"
617 1237
618 static struct ev_loop default_loop_struct; 1238 static struct ev_loop default_loop_struct;
619 struct ev_loop *ev_default_loop_ptr; 1239 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
620 1240
621#else 1241#else
622 1242
623 ev_tstamp ev_rt_now; 1243 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
624 #define VAR(name,decl) static decl; 1244 #define VAR(name,decl) static decl;
625 #include "ev_vars.h" 1245 #include "ev_vars.h"
626 #undef VAR 1246 #undef VAR
627 1247
628 static int ev_default_loop_ptr; 1248 static int ev_default_loop_ptr;
629 1249
630#endif 1250#endif
631 1251
632#if EV_MINIMAL < 2 1252#if EV_FEATURE_API
633# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1253# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
634# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1254# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
635# define EV_INVOKE_PENDING invoke_cb (EV_A) 1255# define EV_INVOKE_PENDING invoke_cb (EV_A)
636#else 1256#else
637# define EV_RELEASE_CB (void)0 1257# define EV_RELEASE_CB (void)0
638# define EV_ACQUIRE_CB (void)0 1258# define EV_ACQUIRE_CB (void)0
639# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1259# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
640#endif 1260#endif
641 1261
642#define EVUNLOOP_RECURSE 0x80 1262#define EVBREAK_RECURSE 0x80
643 1263
644/*****************************************************************************/ 1264/*****************************************************************************/
645 1265
646#ifndef EV_HAVE_EV_TIME 1266#ifndef EV_HAVE_EV_TIME
647ev_tstamp 1267ev_tstamp
… …
691 if (delay > 0.) 1311 if (delay > 0.)
692 { 1312 {
693#if EV_USE_NANOSLEEP 1313#if EV_USE_NANOSLEEP
694 struct timespec ts; 1314 struct timespec ts;
695 1315
696 ts.tv_sec = (time_t)delay; 1316 EV_TS_SET (ts, delay);
697 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
698
699 nanosleep (&ts, 0); 1317 nanosleep (&ts, 0);
700#elif defined(_WIN32) 1318#elif defined(_WIN32)
701 Sleep ((unsigned long)(delay * 1e3)); 1319 Sleep ((unsigned long)(delay * 1e3));
702#else 1320#else
703 struct timeval tv; 1321 struct timeval tv;
704 1322
705 tv.tv_sec = (time_t)delay;
706 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
707
708 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1323 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
709 /* something not guaranteed by newer posix versions, but guaranteed */ 1324 /* something not guaranteed by newer posix versions, but guaranteed */
710 /* by older ones */ 1325 /* by older ones */
1326 EV_TV_SET (tv, delay);
711 select (0, 0, 0, 0, &tv); 1327 select (0, 0, 0, 0, &tv);
712#endif 1328#endif
713 } 1329 }
714} 1330}
715 1331
716/*****************************************************************************/ 1332/*****************************************************************************/
717 1333
718#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1334#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
719 1335
720/* find a suitable new size for the given array, */ 1336/* find a suitable new size for the given array, */
721/* hopefully by rounding to a ncie-to-malloc size */ 1337/* hopefully by rounding to a nice-to-malloc size */
722inline_size int 1338inline_size int
723array_nextsize (int elem, int cur, int cnt) 1339array_nextsize (int elem, int cur, int cnt)
724{ 1340{
725 int ncur = cur + 1; 1341 int ncur = cur + 1;
726 1342
727 do 1343 do
728 ncur <<= 1; 1344 ncur <<= 1;
729 while (cnt > ncur); 1345 while (cnt > ncur);
730 1346
731 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1347 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
732 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1348 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
733 { 1349 {
734 ncur *= elem; 1350 ncur *= elem;
735 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1351 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
736 ncur = ncur - sizeof (void *) * 4; 1352 ncur = ncur - sizeof (void *) * 4;
… …
738 } 1354 }
739 1355
740 return ncur; 1356 return ncur;
741} 1357}
742 1358
743static noinline void * 1359static void * noinline ecb_cold
744array_realloc (int elem, void *base, int *cur, int cnt) 1360array_realloc (int elem, void *base, int *cur, int cnt)
745{ 1361{
746 *cur = array_nextsize (elem, *cur, cnt); 1362 *cur = array_nextsize (elem, *cur, cnt);
747 return ev_realloc (base, elem * *cur); 1363 return ev_realloc (base, elem * *cur);
748} 1364}
… …
751 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1367 memset ((void *)(base), 0, sizeof (*(base)) * (count))
752 1368
753#define array_needsize(type,base,cur,cnt,init) \ 1369#define array_needsize(type,base,cur,cnt,init) \
754 if (expect_false ((cnt) > (cur))) \ 1370 if (expect_false ((cnt) > (cur))) \
755 { \ 1371 { \
756 int ocur_ = (cur); \ 1372 int ecb_unused ocur_ = (cur); \
757 (base) = (type *)array_realloc \ 1373 (base) = (type *)array_realloc \
758 (sizeof (type), (base), &(cur), (cnt)); \ 1374 (sizeof (type), (base), &(cur), (cnt)); \
759 init ((base) + (ocur_), (cur) - ocur_); \ 1375 init ((base) + (ocur_), (cur) - ocur_); \
760 } 1376 }
761 1377
… …
822} 1438}
823 1439
824/*****************************************************************************/ 1440/*****************************************************************************/
825 1441
826inline_speed void 1442inline_speed void
827fd_event_nc (EV_P_ int fd, int revents) 1443fd_event_nocheck (EV_P_ int fd, int revents)
828{ 1444{
829 ANFD *anfd = anfds + fd; 1445 ANFD *anfd = anfds + fd;
830 ev_io *w; 1446 ev_io *w;
831 1447
832 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1448 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
844fd_event (EV_P_ int fd, int revents) 1460fd_event (EV_P_ int fd, int revents)
845{ 1461{
846 ANFD *anfd = anfds + fd; 1462 ANFD *anfd = anfds + fd;
847 1463
848 if (expect_true (!anfd->reify)) 1464 if (expect_true (!anfd->reify))
849 fd_event_nc (EV_A_ fd, revents); 1465 fd_event_nocheck (EV_A_ fd, revents);
850} 1466}
851 1467
852void 1468void
853ev_feed_fd_event (EV_P_ int fd, int revents) 1469ev_feed_fd_event (EV_P_ int fd, int revents)
854{ 1470{
855 if (fd >= 0 && fd < anfdmax) 1471 if (fd >= 0 && fd < anfdmax)
856 fd_event_nc (EV_A_ fd, revents); 1472 fd_event_nocheck (EV_A_ fd, revents);
857} 1473}
858 1474
859/* make sure the external fd watch events are in-sync */ 1475/* make sure the external fd watch events are in-sync */
860/* with the kernel/libev internal state */ 1476/* with the kernel/libev internal state */
861inline_size void 1477inline_size void
862fd_reify (EV_P) 1478fd_reify (EV_P)
863{ 1479{
864 int i; 1480 int i;
865 1481
1482#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1483 for (i = 0; i < fdchangecnt; ++i)
1484 {
1485 int fd = fdchanges [i];
1486 ANFD *anfd = anfds + fd;
1487
1488 if (anfd->reify & EV__IOFDSET && anfd->head)
1489 {
1490 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1491
1492 if (handle != anfd->handle)
1493 {
1494 unsigned long arg;
1495
1496 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1497
1498 /* handle changed, but fd didn't - we need to do it in two steps */
1499 backend_modify (EV_A_ fd, anfd->events, 0);
1500 anfd->events = 0;
1501 anfd->handle = handle;
1502 }
1503 }
1504 }
1505#endif
1506
866 for (i = 0; i < fdchangecnt; ++i) 1507 for (i = 0; i < fdchangecnt; ++i)
867 { 1508 {
868 int fd = fdchanges [i]; 1509 int fd = fdchanges [i];
869 ANFD *anfd = anfds + fd; 1510 ANFD *anfd = anfds + fd;
870 ev_io *w; 1511 ev_io *w;
871 1512
872 unsigned char events = 0; 1513 unsigned char o_events = anfd->events;
1514 unsigned char o_reify = anfd->reify;
873 1515
874 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1516 anfd->reify = 0;
875 events |= (unsigned char)w->events;
876 1517
877#if EV_SELECT_IS_WINSOCKET 1518 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
878 if (events)
879 { 1519 {
880 unsigned long arg; 1520 anfd->events = 0;
881 #ifdef EV_FD_TO_WIN32_HANDLE 1521
882 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1522 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
883 #else 1523 anfd->events |= (unsigned char)w->events;
884 anfd->handle = _get_osfhandle (fd); 1524
885 #endif 1525 if (o_events != anfd->events)
886 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1526 o_reify = EV__IOFDSET; /* actually |= */
887 } 1527 }
888#endif
889 1528
890 { 1529 if (o_reify & EV__IOFDSET)
891 unsigned char o_events = anfd->events;
892 unsigned char o_reify = anfd->reify;
893
894 anfd->reify = 0;
895 anfd->events = events;
896
897 if (o_events != events || o_reify & EV__IOFDSET)
898 backend_modify (EV_A_ fd, o_events, events); 1530 backend_modify (EV_A_ fd, o_events, anfd->events);
899 }
900 } 1531 }
901 1532
902 fdchangecnt = 0; 1533 fdchangecnt = 0;
903} 1534}
904 1535
… …
916 fdchanges [fdchangecnt - 1] = fd; 1547 fdchanges [fdchangecnt - 1] = fd;
917 } 1548 }
918} 1549}
919 1550
920/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1551/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
921inline_speed void 1552inline_speed void ecb_cold
922fd_kill (EV_P_ int fd) 1553fd_kill (EV_P_ int fd)
923{ 1554{
924 ev_io *w; 1555 ev_io *w;
925 1556
926 while ((w = (ev_io *)anfds [fd].head)) 1557 while ((w = (ev_io *)anfds [fd].head))
… …
928 ev_io_stop (EV_A_ w); 1559 ev_io_stop (EV_A_ w);
929 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1560 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
930 } 1561 }
931} 1562}
932 1563
933/* check whether the given fd is atcually valid, for error recovery */ 1564/* check whether the given fd is actually valid, for error recovery */
934inline_size int 1565inline_size int ecb_cold
935fd_valid (int fd) 1566fd_valid (int fd)
936{ 1567{
937#ifdef _WIN32 1568#ifdef _WIN32
938 return _get_osfhandle (fd) != -1; 1569 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
939#else 1570#else
940 return fcntl (fd, F_GETFD) != -1; 1571 return fcntl (fd, F_GETFD) != -1;
941#endif 1572#endif
942} 1573}
943 1574
944/* called on EBADF to verify fds */ 1575/* called on EBADF to verify fds */
945static void noinline 1576static void noinline ecb_cold
946fd_ebadf (EV_P) 1577fd_ebadf (EV_P)
947{ 1578{
948 int fd; 1579 int fd;
949 1580
950 for (fd = 0; fd < anfdmax; ++fd) 1581 for (fd = 0; fd < anfdmax; ++fd)
… …
952 if (!fd_valid (fd) && errno == EBADF) 1583 if (!fd_valid (fd) && errno == EBADF)
953 fd_kill (EV_A_ fd); 1584 fd_kill (EV_A_ fd);
954} 1585}
955 1586
956/* called on ENOMEM in select/poll to kill some fds and retry */ 1587/* called on ENOMEM in select/poll to kill some fds and retry */
957static void noinline 1588static void noinline ecb_cold
958fd_enomem (EV_P) 1589fd_enomem (EV_P)
959{ 1590{
960 int fd; 1591 int fd;
961 1592
962 for (fd = anfdmax; fd--; ) 1593 for (fd = anfdmax; fd--; )
… …
980 anfds [fd].emask = 0; 1611 anfds [fd].emask = 0;
981 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1612 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
982 } 1613 }
983} 1614}
984 1615
1616/* used to prepare libev internal fd's */
1617/* this is not fork-safe */
1618inline_speed void
1619fd_intern (int fd)
1620{
1621#ifdef _WIN32
1622 unsigned long arg = 1;
1623 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1624#else
1625 fcntl (fd, F_SETFD, FD_CLOEXEC);
1626 fcntl (fd, F_SETFL, O_NONBLOCK);
1627#endif
1628}
1629
985/*****************************************************************************/ 1630/*****************************************************************************/
986 1631
987/* 1632/*
988 * the heap functions want a real array index. array index 0 uis guaranteed to not 1633 * the heap functions want a real array index. array index 0 is guaranteed to not
989 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1634 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
990 * the branching factor of the d-tree. 1635 * the branching factor of the d-tree.
991 */ 1636 */
992 1637
993/* 1638/*
… …
1141 1786
1142static ANSIG signals [EV_NSIG - 1]; 1787static ANSIG signals [EV_NSIG - 1];
1143 1788
1144/*****************************************************************************/ 1789/*****************************************************************************/
1145 1790
1146/* used to prepare libev internal fd's */ 1791#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1147/* this is not fork-safe */
1148inline_speed void
1149fd_intern (int fd)
1150{
1151#ifdef _WIN32
1152 unsigned long arg = 1;
1153 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1154#else
1155 fcntl (fd, F_SETFD, FD_CLOEXEC);
1156 fcntl (fd, F_SETFL, O_NONBLOCK);
1157#endif
1158}
1159 1792
1160static void noinline 1793static void noinline ecb_cold
1161evpipe_init (EV_P) 1794evpipe_init (EV_P)
1162{ 1795{
1163 if (!ev_is_active (&pipe_w)) 1796 if (!ev_is_active (&pipe_w))
1164 { 1797 {
1165#if EV_USE_EVENTFD 1798# if EV_USE_EVENTFD
1166 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1799 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1167 if (evfd < 0 && errno == EINVAL) 1800 if (evfd < 0 && errno == EINVAL)
1168 evfd = eventfd (0, 0); 1801 evfd = eventfd (0, 0);
1169 1802
1170 if (evfd >= 0) 1803 if (evfd >= 0)
… …
1172 evpipe [0] = -1; 1805 evpipe [0] = -1;
1173 fd_intern (evfd); /* doing it twice doesn't hurt */ 1806 fd_intern (evfd); /* doing it twice doesn't hurt */
1174 ev_io_set (&pipe_w, evfd, EV_READ); 1807 ev_io_set (&pipe_w, evfd, EV_READ);
1175 } 1808 }
1176 else 1809 else
1177#endif 1810# endif
1178 { 1811 {
1179 while (pipe (evpipe)) 1812 while (pipe (evpipe))
1180 ev_syserr ("(libev) error creating signal/async pipe"); 1813 ev_syserr ("(libev) error creating signal/async pipe");
1181 1814
1182 fd_intern (evpipe [0]); 1815 fd_intern (evpipe [0]);
… …
1187 ev_io_start (EV_A_ &pipe_w); 1820 ev_io_start (EV_A_ &pipe_w);
1188 ev_unref (EV_A); /* watcher should not keep loop alive */ 1821 ev_unref (EV_A); /* watcher should not keep loop alive */
1189 } 1822 }
1190} 1823}
1191 1824
1192inline_size void 1825inline_speed void
1193evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1826evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1194{ 1827{
1195 if (!*flag) 1828 if (expect_true (*flag))
1829 return;
1830
1831 *flag = 1;
1832
1833 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1834
1835 pipe_write_skipped = 1;
1836
1837 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1838
1839 if (pipe_write_wanted)
1196 { 1840 {
1841 int old_errno;
1842
1843 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1844
1197 int old_errno = errno; /* save errno because write might clobber it */ 1845 old_errno = errno; /* save errno because write will clobber it */
1198
1199 *flag = 1;
1200 1846
1201#if EV_USE_EVENTFD 1847#if EV_USE_EVENTFD
1202 if (evfd >= 0) 1848 if (evfd >= 0)
1203 { 1849 {
1204 uint64_t counter = 1; 1850 uint64_t counter = 1;
1205 write (evfd, &counter, sizeof (uint64_t)); 1851 write (evfd, &counter, sizeof (uint64_t));
1206 } 1852 }
1207 else 1853 else
1208#endif 1854#endif
1855 {
1856 /* win32 people keep sending patches that change this write() to send() */
1857 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1858 /* so when you think this write should be a send instead, please find out */
1859 /* where your send() is from - it's definitely not the microsoft send, and */
1860 /* tell me. thank you. */
1209 write (evpipe [1], &old_errno, 1); 1861 write (evpipe [1], &(evpipe [1]), 1);
1862 }
1210 1863
1211 errno = old_errno; 1864 errno = old_errno;
1212 } 1865 }
1213} 1866}
1214 1867
… …
1217static void 1870static void
1218pipecb (EV_P_ ev_io *iow, int revents) 1871pipecb (EV_P_ ev_io *iow, int revents)
1219{ 1872{
1220 int i; 1873 int i;
1221 1874
1875 if (revents & EV_READ)
1876 {
1222#if EV_USE_EVENTFD 1877#if EV_USE_EVENTFD
1223 if (evfd >= 0) 1878 if (evfd >= 0)
1224 { 1879 {
1225 uint64_t counter; 1880 uint64_t counter;
1226 read (evfd, &counter, sizeof (uint64_t)); 1881 read (evfd, &counter, sizeof (uint64_t));
1227 } 1882 }
1228 else 1883 else
1229#endif 1884#endif
1230 { 1885 {
1231 char dummy; 1886 char dummy;
1887 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1232 read (evpipe [0], &dummy, 1); 1888 read (evpipe [0], &dummy, 1);
1889 }
1233 } 1890 }
1234 1891
1892 pipe_write_skipped = 0;
1893
1894#if EV_SIGNAL_ENABLE
1235 if (sig_pending) 1895 if (sig_pending)
1236 { 1896 {
1237 sig_pending = 0; 1897 sig_pending = 0;
1238 1898
1239 for (i = EV_NSIG - 1; i--; ) 1899 for (i = EV_NSIG - 1; i--; )
1240 if (expect_false (signals [i].pending)) 1900 if (expect_false (signals [i].pending))
1241 ev_feed_signal_event (EV_A_ i + 1); 1901 ev_feed_signal_event (EV_A_ i + 1);
1242 } 1902 }
1903#endif
1243 1904
1244#if EV_ASYNC_ENABLE 1905#if EV_ASYNC_ENABLE
1245 if (async_pending) 1906 if (async_pending)
1246 { 1907 {
1247 async_pending = 0; 1908 async_pending = 0;
… …
1256#endif 1917#endif
1257} 1918}
1258 1919
1259/*****************************************************************************/ 1920/*****************************************************************************/
1260 1921
1922void
1923ev_feed_signal (int signum)
1924{
1925#if EV_MULTIPLICITY
1926 EV_P = signals [signum - 1].loop;
1927
1928 if (!EV_A)
1929 return;
1930#endif
1931
1932 if (!ev_active (&pipe_w))
1933 return;
1934
1935 signals [signum - 1].pending = 1;
1936 evpipe_write (EV_A_ &sig_pending);
1937}
1938
1261static void 1939static void
1262ev_sighandler (int signum) 1940ev_sighandler (int signum)
1263{ 1941{
1264#if EV_MULTIPLICITY
1265 EV_P = signals [signum - 1].loop;
1266#endif
1267
1268#if _WIN32 1942#ifdef _WIN32
1269 signal (signum, ev_sighandler); 1943 signal (signum, ev_sighandler);
1270#endif 1944#endif
1271 1945
1272 signals [signum - 1].pending = 1; 1946 ev_feed_signal (signum);
1273 evpipe_write (EV_A_ &sig_pending);
1274} 1947}
1275 1948
1276void noinline 1949void noinline
1277ev_feed_signal_event (EV_P_ int signum) 1950ev_feed_signal_event (EV_P_ int signum)
1278{ 1951{
… …
1315 break; 1988 break;
1316 } 1989 }
1317} 1990}
1318#endif 1991#endif
1319 1992
1993#endif
1994
1320/*****************************************************************************/ 1995/*****************************************************************************/
1321 1996
1997#if EV_CHILD_ENABLE
1322static WL childs [EV_PID_HASHSIZE]; 1998static WL childs [EV_PID_HASHSIZE];
1323
1324#ifndef _WIN32
1325 1999
1326static ev_signal childev; 2000static ev_signal childev;
1327 2001
1328#ifndef WIFCONTINUED 2002#ifndef WIFCONTINUED
1329# define WIFCONTINUED(status) 0 2003# define WIFCONTINUED(status) 0
… …
1334child_reap (EV_P_ int chain, int pid, int status) 2008child_reap (EV_P_ int chain, int pid, int status)
1335{ 2009{
1336 ev_child *w; 2010 ev_child *w;
1337 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2011 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1338 2012
1339 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2013 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1340 { 2014 {
1341 if ((w->pid == pid || !w->pid) 2015 if ((w->pid == pid || !w->pid)
1342 && (!traced || (w->flags & 1))) 2016 && (!traced || (w->flags & 1)))
1343 { 2017 {
1344 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2018 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1369 /* make sure we are called again until all children have been reaped */ 2043 /* make sure we are called again until all children have been reaped */
1370 /* we need to do it this way so that the callback gets called before we continue */ 2044 /* we need to do it this way so that the callback gets called before we continue */
1371 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2045 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1372 2046
1373 child_reap (EV_A_ pid, pid, status); 2047 child_reap (EV_A_ pid, pid, status);
1374 if (EV_PID_HASHSIZE > 1) 2048 if ((EV_PID_HASHSIZE) > 1)
1375 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2049 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1376} 2050}
1377 2051
1378#endif 2052#endif
1379 2053
1380/*****************************************************************************/ 2054/*****************************************************************************/
1381 2055
2056#if EV_USE_IOCP
2057# include "ev_iocp.c"
2058#endif
1382#if EV_USE_PORT 2059#if EV_USE_PORT
1383# include "ev_port.c" 2060# include "ev_port.c"
1384#endif 2061#endif
1385#if EV_USE_KQUEUE 2062#if EV_USE_KQUEUE
1386# include "ev_kqueue.c" 2063# include "ev_kqueue.c"
… …
1393#endif 2070#endif
1394#if EV_USE_SELECT 2071#if EV_USE_SELECT
1395# include "ev_select.c" 2072# include "ev_select.c"
1396#endif 2073#endif
1397 2074
1398int 2075int ecb_cold
1399ev_version_major (void) 2076ev_version_major (void)
1400{ 2077{
1401 return EV_VERSION_MAJOR; 2078 return EV_VERSION_MAJOR;
1402} 2079}
1403 2080
1404int 2081int ecb_cold
1405ev_version_minor (void) 2082ev_version_minor (void)
1406{ 2083{
1407 return EV_VERSION_MINOR; 2084 return EV_VERSION_MINOR;
1408} 2085}
1409 2086
1410/* return true if we are running with elevated privileges and should ignore env variables */ 2087/* return true if we are running with elevated privileges and should ignore env variables */
1411int inline_size 2088int inline_size ecb_cold
1412enable_secure (void) 2089enable_secure (void)
1413{ 2090{
1414#ifdef _WIN32 2091#ifdef _WIN32
1415 return 0; 2092 return 0;
1416#else 2093#else
1417 return getuid () != geteuid () 2094 return getuid () != geteuid ()
1418 || getgid () != getegid (); 2095 || getgid () != getegid ();
1419#endif 2096#endif
1420} 2097}
1421 2098
1422unsigned int 2099unsigned int ecb_cold
1423ev_supported_backends (void) 2100ev_supported_backends (void)
1424{ 2101{
1425 unsigned int flags = 0; 2102 unsigned int flags = 0;
1426 2103
1427 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2104 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1431 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2108 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1432 2109
1433 return flags; 2110 return flags;
1434} 2111}
1435 2112
1436unsigned int 2113unsigned int ecb_cold
1437ev_recommended_backends (void) 2114ev_recommended_backends (void)
1438{ 2115{
1439 unsigned int flags = ev_supported_backends (); 2116 unsigned int flags = ev_supported_backends ();
1440 2117
1441#ifndef __NetBSD__ 2118#ifndef __NetBSD__
… …
1446#ifdef __APPLE__ 2123#ifdef __APPLE__
1447 /* only select works correctly on that "unix-certified" platform */ 2124 /* only select works correctly on that "unix-certified" platform */
1448 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2125 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1449 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2126 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1450#endif 2127#endif
2128#ifdef __FreeBSD__
2129 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2130#endif
1451 2131
1452 return flags; 2132 return flags;
1453} 2133}
1454 2134
1455unsigned int 2135unsigned int ecb_cold
1456ev_embeddable_backends (void) 2136ev_embeddable_backends (void)
1457{ 2137{
1458 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2138 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1459 2139
1460 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2140 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1461 /* please fix it and tell me how to detect the fix */ 2141 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1462 flags &= ~EVBACKEND_EPOLL; 2142 flags &= ~EVBACKEND_EPOLL;
1463 2143
1464 return flags; 2144 return flags;
1465} 2145}
1466 2146
1467unsigned int 2147unsigned int
1468ev_backend (EV_P) 2148ev_backend (EV_P)
1469{ 2149{
1470 return backend; 2150 return backend;
1471} 2151}
1472 2152
1473#if EV_MINIMAL < 2 2153#if EV_FEATURE_API
1474unsigned int 2154unsigned int
1475ev_loop_count (EV_P) 2155ev_iteration (EV_P)
1476{ 2156{
1477 return loop_count; 2157 return loop_count;
1478} 2158}
1479 2159
1480unsigned int 2160unsigned int
1481ev_loop_depth (EV_P) 2161ev_depth (EV_P)
1482{ 2162{
1483 return loop_depth; 2163 return loop_depth;
1484} 2164}
1485 2165
1486void 2166void
… …
1505ev_userdata (EV_P) 2185ev_userdata (EV_P)
1506{ 2186{
1507 return userdata; 2187 return userdata;
1508} 2188}
1509 2189
2190void
1510void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2191ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1511{ 2192{
1512 invoke_cb = invoke_pending_cb; 2193 invoke_cb = invoke_pending_cb;
1513} 2194}
1514 2195
2196void
1515void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2197ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1516{ 2198{
1517 release_cb = release; 2199 release_cb = release;
1518 acquire_cb = acquire; 2200 acquire_cb = acquire;
1519} 2201}
1520#endif 2202#endif
1521 2203
1522/* initialise a loop structure, must be zero-initialised */ 2204/* initialise a loop structure, must be zero-initialised */
1523static void noinline 2205static void noinline ecb_cold
1524loop_init (EV_P_ unsigned int flags) 2206loop_init (EV_P_ unsigned int flags)
1525{ 2207{
1526 if (!backend) 2208 if (!backend)
1527 { 2209 {
2210 origflags = flags;
2211
1528#if EV_USE_REALTIME 2212#if EV_USE_REALTIME
1529 if (!have_realtime) 2213 if (!have_realtime)
1530 { 2214 {
1531 struct timespec ts; 2215 struct timespec ts;
1532 2216
… …
1554 if (!(flags & EVFLAG_NOENV) 2238 if (!(flags & EVFLAG_NOENV)
1555 && !enable_secure () 2239 && !enable_secure ()
1556 && getenv ("LIBEV_FLAGS")) 2240 && getenv ("LIBEV_FLAGS"))
1557 flags = atoi (getenv ("LIBEV_FLAGS")); 2241 flags = atoi (getenv ("LIBEV_FLAGS"));
1558 2242
1559 ev_rt_now = ev_time (); 2243 ev_rt_now = ev_time ();
1560 mn_now = get_clock (); 2244 mn_now = get_clock ();
1561 now_floor = mn_now; 2245 now_floor = mn_now;
1562 rtmn_diff = ev_rt_now - mn_now; 2246 rtmn_diff = ev_rt_now - mn_now;
1563#if EV_MINIMAL < 2 2247#if EV_FEATURE_API
1564 invoke_cb = ev_invoke_pending; 2248 invoke_cb = ev_invoke_pending;
1565#endif 2249#endif
1566 2250
1567 io_blocktime = 0.; 2251 io_blocktime = 0.;
1568 timeout_blocktime = 0.; 2252 timeout_blocktime = 0.;
1569 backend = 0; 2253 backend = 0;
1570 backend_fd = -1; 2254 backend_fd = -1;
1571 sig_pending = 0; 2255 sig_pending = 0;
1572#if EV_ASYNC_ENABLE 2256#if EV_ASYNC_ENABLE
1573 async_pending = 0; 2257 async_pending = 0;
1574#endif 2258#endif
2259 pipe_write_skipped = 0;
2260 pipe_write_wanted = 0;
1575#if EV_USE_INOTIFY 2261#if EV_USE_INOTIFY
1576 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2262 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1577#endif 2263#endif
1578#if EV_USE_SIGNALFD 2264#if EV_USE_SIGNALFD
1579 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2265 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1580#endif 2266#endif
1581 2267
1582 if (!(flags & 0x0000ffffU)) 2268 if (!(flags & EVBACKEND_MASK))
1583 flags |= ev_recommended_backends (); 2269 flags |= ev_recommended_backends ();
1584 2270
2271#if EV_USE_IOCP
2272 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2273#endif
1585#if EV_USE_PORT 2274#if EV_USE_PORT
1586 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2275 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1587#endif 2276#endif
1588#if EV_USE_KQUEUE 2277#if EV_USE_KQUEUE
1589 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2278 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1598 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2287 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1599#endif 2288#endif
1600 2289
1601 ev_prepare_init (&pending_w, pendingcb); 2290 ev_prepare_init (&pending_w, pendingcb);
1602 2291
2292#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1603 ev_init (&pipe_w, pipecb); 2293 ev_init (&pipe_w, pipecb);
1604 ev_set_priority (&pipe_w, EV_MAXPRI); 2294 ev_set_priority (&pipe_w, EV_MAXPRI);
2295#endif
1605 } 2296 }
1606} 2297}
1607 2298
1608/* free up a loop structure */ 2299/* free up a loop structure */
1609static void noinline 2300void ecb_cold
1610loop_destroy (EV_P) 2301ev_loop_destroy (EV_P)
1611{ 2302{
1612 int i; 2303 int i;
2304
2305#if EV_MULTIPLICITY
2306 /* mimic free (0) */
2307 if (!EV_A)
2308 return;
2309#endif
2310
2311#if EV_CLEANUP_ENABLE
2312 /* queue cleanup watchers (and execute them) */
2313 if (expect_false (cleanupcnt))
2314 {
2315 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2316 EV_INVOKE_PENDING;
2317 }
2318#endif
2319
2320#if EV_CHILD_ENABLE
2321 if (ev_is_active (&childev))
2322 {
2323 ev_ref (EV_A); /* child watcher */
2324 ev_signal_stop (EV_A_ &childev);
2325 }
2326#endif
1613 2327
1614 if (ev_is_active (&pipe_w)) 2328 if (ev_is_active (&pipe_w))
1615 { 2329 {
1616 /*ev_ref (EV_A);*/ 2330 /*ev_ref (EV_A);*/
1617 /*ev_io_stop (EV_A_ &pipe_w);*/ 2331 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1621 close (evfd); 2335 close (evfd);
1622#endif 2336#endif
1623 2337
1624 if (evpipe [0] >= 0) 2338 if (evpipe [0] >= 0)
1625 { 2339 {
1626 close (evpipe [0]); 2340 EV_WIN32_CLOSE_FD (evpipe [0]);
1627 close (evpipe [1]); 2341 EV_WIN32_CLOSE_FD (evpipe [1]);
1628 } 2342 }
1629 } 2343 }
1630 2344
1631#if EV_USE_SIGNALFD 2345#if EV_USE_SIGNALFD
1632 if (ev_is_active (&sigfd_w)) 2346 if (ev_is_active (&sigfd_w))
1633 {
1634 /*ev_ref (EV_A);*/
1635 /*ev_io_stop (EV_A_ &sigfd_w);*/
1636
1637 close (sigfd); 2347 close (sigfd);
1638 }
1639#endif 2348#endif
1640 2349
1641#if EV_USE_INOTIFY 2350#if EV_USE_INOTIFY
1642 if (fs_fd >= 0) 2351 if (fs_fd >= 0)
1643 close (fs_fd); 2352 close (fs_fd);
1644#endif 2353#endif
1645 2354
1646 if (backend_fd >= 0) 2355 if (backend_fd >= 0)
1647 close (backend_fd); 2356 close (backend_fd);
1648 2357
2358#if EV_USE_IOCP
2359 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2360#endif
1649#if EV_USE_PORT 2361#if EV_USE_PORT
1650 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2362 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1651#endif 2363#endif
1652#if EV_USE_KQUEUE 2364#if EV_USE_KQUEUE
1653 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2365 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1680 array_free (periodic, EMPTY); 2392 array_free (periodic, EMPTY);
1681#endif 2393#endif
1682#if EV_FORK_ENABLE 2394#if EV_FORK_ENABLE
1683 array_free (fork, EMPTY); 2395 array_free (fork, EMPTY);
1684#endif 2396#endif
2397#if EV_CLEANUP_ENABLE
2398 array_free (cleanup, EMPTY);
2399#endif
1685 array_free (prepare, EMPTY); 2400 array_free (prepare, EMPTY);
1686 array_free (check, EMPTY); 2401 array_free (check, EMPTY);
1687#if EV_ASYNC_ENABLE 2402#if EV_ASYNC_ENABLE
1688 array_free (async, EMPTY); 2403 array_free (async, EMPTY);
1689#endif 2404#endif
1690 2405
1691 backend = 0; 2406 backend = 0;
2407
2408#if EV_MULTIPLICITY
2409 if (ev_is_default_loop (EV_A))
2410#endif
2411 ev_default_loop_ptr = 0;
2412#if EV_MULTIPLICITY
2413 else
2414 ev_free (EV_A);
2415#endif
1692} 2416}
1693 2417
1694#if EV_USE_INOTIFY 2418#if EV_USE_INOTIFY
1695inline_size void infy_fork (EV_P); 2419inline_size void infy_fork (EV_P);
1696#endif 2420#endif
… …
1711 infy_fork (EV_A); 2435 infy_fork (EV_A);
1712#endif 2436#endif
1713 2437
1714 if (ev_is_active (&pipe_w)) 2438 if (ev_is_active (&pipe_w))
1715 { 2439 {
1716 /* this "locks" the handlers against writing to the pipe */ 2440 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1717 /* while we modify the fd vars */
1718 sig_pending = 1;
1719#if EV_ASYNC_ENABLE
1720 async_pending = 1;
1721#endif
1722 2441
1723 ev_ref (EV_A); 2442 ev_ref (EV_A);
1724 ev_io_stop (EV_A_ &pipe_w); 2443 ev_io_stop (EV_A_ &pipe_w);
1725 2444
1726#if EV_USE_EVENTFD 2445#if EV_USE_EVENTFD
… …
1728 close (evfd); 2447 close (evfd);
1729#endif 2448#endif
1730 2449
1731 if (evpipe [0] >= 0) 2450 if (evpipe [0] >= 0)
1732 { 2451 {
1733 close (evpipe [0]); 2452 EV_WIN32_CLOSE_FD (evpipe [0]);
1734 close (evpipe [1]); 2453 EV_WIN32_CLOSE_FD (evpipe [1]);
1735 } 2454 }
1736 2455
2456#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1737 evpipe_init (EV_A); 2457 evpipe_init (EV_A);
1738 /* now iterate over everything, in case we missed something */ 2458 /* now iterate over everything, in case we missed something */
1739 pipecb (EV_A_ &pipe_w, EV_READ); 2459 pipecb (EV_A_ &pipe_w, EV_READ);
2460#endif
1740 } 2461 }
1741 2462
1742 postfork = 0; 2463 postfork = 0;
1743} 2464}
1744 2465
1745#if EV_MULTIPLICITY 2466#if EV_MULTIPLICITY
1746 2467
1747struct ev_loop * 2468struct ev_loop * ecb_cold
1748ev_loop_new (unsigned int flags) 2469ev_loop_new (unsigned int flags)
1749{ 2470{
1750 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2471 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1751 2472
1752 memset (EV_A, 0, sizeof (struct ev_loop)); 2473 memset (EV_A, 0, sizeof (struct ev_loop));
1753 loop_init (EV_A_ flags); 2474 loop_init (EV_A_ flags);
1754 2475
1755 if (ev_backend (EV_A)) 2476 if (ev_backend (EV_A))
1756 return EV_A; 2477 return EV_A;
1757 2478
2479 ev_free (EV_A);
1758 return 0; 2480 return 0;
1759} 2481}
1760 2482
1761void
1762ev_loop_destroy (EV_P)
1763{
1764 loop_destroy (EV_A);
1765 ev_free (loop);
1766}
1767
1768void
1769ev_loop_fork (EV_P)
1770{
1771 postfork = 1; /* must be in line with ev_default_fork */
1772}
1773#endif /* multiplicity */ 2483#endif /* multiplicity */
1774 2484
1775#if EV_VERIFY 2485#if EV_VERIFY
1776static void noinline 2486static void noinline ecb_cold
1777verify_watcher (EV_P_ W w) 2487verify_watcher (EV_P_ W w)
1778{ 2488{
1779 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2489 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1780 2490
1781 if (w->pending) 2491 if (w->pending)
1782 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2492 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1783} 2493}
1784 2494
1785static void noinline 2495static void noinline ecb_cold
1786verify_heap (EV_P_ ANHE *heap, int N) 2496verify_heap (EV_P_ ANHE *heap, int N)
1787{ 2497{
1788 int i; 2498 int i;
1789 2499
1790 for (i = HEAP0; i < N + HEAP0; ++i) 2500 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1795 2505
1796 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2506 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1797 } 2507 }
1798} 2508}
1799 2509
1800static void noinline 2510static void noinline ecb_cold
1801array_verify (EV_P_ W *ws, int cnt) 2511array_verify (EV_P_ W *ws, int cnt)
1802{ 2512{
1803 while (cnt--) 2513 while (cnt--)
1804 { 2514 {
1805 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2515 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1806 verify_watcher (EV_A_ ws [cnt]); 2516 verify_watcher (EV_A_ ws [cnt]);
1807 } 2517 }
1808} 2518}
1809#endif 2519#endif
1810 2520
1811#if EV_MINIMAL < 2 2521#if EV_FEATURE_API
1812void 2522void ecb_cold
1813ev_loop_verify (EV_P) 2523ev_verify (EV_P)
1814{ 2524{
1815#if EV_VERIFY 2525#if EV_VERIFY
1816 int i; 2526 int i;
1817 WL w; 2527 WL w;
1818 2528
… …
1852#if EV_FORK_ENABLE 2562#if EV_FORK_ENABLE
1853 assert (forkmax >= forkcnt); 2563 assert (forkmax >= forkcnt);
1854 array_verify (EV_A_ (W *)forks, forkcnt); 2564 array_verify (EV_A_ (W *)forks, forkcnt);
1855#endif 2565#endif
1856 2566
2567#if EV_CLEANUP_ENABLE
2568 assert (cleanupmax >= cleanupcnt);
2569 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2570#endif
2571
1857#if EV_ASYNC_ENABLE 2572#if EV_ASYNC_ENABLE
1858 assert (asyncmax >= asynccnt); 2573 assert (asyncmax >= asynccnt);
1859 array_verify (EV_A_ (W *)asyncs, asynccnt); 2574 array_verify (EV_A_ (W *)asyncs, asynccnt);
1860#endif 2575#endif
1861 2576
2577#if EV_PREPARE_ENABLE
1862 assert (preparemax >= preparecnt); 2578 assert (preparemax >= preparecnt);
1863 array_verify (EV_A_ (W *)prepares, preparecnt); 2579 array_verify (EV_A_ (W *)prepares, preparecnt);
2580#endif
1864 2581
2582#if EV_CHECK_ENABLE
1865 assert (checkmax >= checkcnt); 2583 assert (checkmax >= checkcnt);
1866 array_verify (EV_A_ (W *)checks, checkcnt); 2584 array_verify (EV_A_ (W *)checks, checkcnt);
2585#endif
1867 2586
1868# if 0 2587# if 0
2588#if EV_CHILD_ENABLE
1869 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2589 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1870 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2590 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2591#endif
1871# endif 2592# endif
1872#endif 2593#endif
1873} 2594}
1874#endif 2595#endif
1875 2596
1876#if EV_MULTIPLICITY 2597#if EV_MULTIPLICITY
1877struct ev_loop * 2598struct ev_loop * ecb_cold
1878ev_default_loop_init (unsigned int flags)
1879#else 2599#else
1880int 2600int
2601#endif
1881ev_default_loop (unsigned int flags) 2602ev_default_loop (unsigned int flags)
1882#endif
1883{ 2603{
1884 if (!ev_default_loop_ptr) 2604 if (!ev_default_loop_ptr)
1885 { 2605 {
1886#if EV_MULTIPLICITY 2606#if EV_MULTIPLICITY
1887 EV_P = ev_default_loop_ptr = &default_loop_struct; 2607 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1891 2611
1892 loop_init (EV_A_ flags); 2612 loop_init (EV_A_ flags);
1893 2613
1894 if (ev_backend (EV_A)) 2614 if (ev_backend (EV_A))
1895 { 2615 {
1896#ifndef _WIN32 2616#if EV_CHILD_ENABLE
1897 ev_signal_init (&childev, childcb, SIGCHLD); 2617 ev_signal_init (&childev, childcb, SIGCHLD);
1898 ev_set_priority (&childev, EV_MAXPRI); 2618 ev_set_priority (&childev, EV_MAXPRI);
1899 ev_signal_start (EV_A_ &childev); 2619 ev_signal_start (EV_A_ &childev);
1900 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2620 ev_unref (EV_A); /* child watcher should not keep loop alive */
1901#endif 2621#endif
… …
1906 2626
1907 return ev_default_loop_ptr; 2627 return ev_default_loop_ptr;
1908} 2628}
1909 2629
1910void 2630void
1911ev_default_destroy (void) 2631ev_loop_fork (EV_P)
1912{ 2632{
1913#if EV_MULTIPLICITY
1914 EV_P = ev_default_loop_ptr;
1915#endif
1916
1917 ev_default_loop_ptr = 0;
1918
1919#ifndef _WIN32
1920 ev_ref (EV_A); /* child watcher */
1921 ev_signal_stop (EV_A_ &childev);
1922#endif
1923
1924 loop_destroy (EV_A);
1925}
1926
1927void
1928ev_default_fork (void)
1929{
1930#if EV_MULTIPLICITY
1931 EV_P = ev_default_loop_ptr;
1932#endif
1933
1934 postfork = 1; /* must be in line with ev_loop_fork */ 2633 postfork = 1; /* must be in line with ev_default_fork */
1935} 2634}
1936 2635
1937/*****************************************************************************/ 2636/*****************************************************************************/
1938 2637
1939void 2638void
… …
1961 2660
1962 for (pri = NUMPRI; pri--; ) 2661 for (pri = NUMPRI; pri--; )
1963 while (pendingcnt [pri]) 2662 while (pendingcnt [pri])
1964 { 2663 {
1965 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2664 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1966
1967 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1968 /* ^ this is no longer true, as pending_w could be here */
1969 2665
1970 p->w->pending = 0; 2666 p->w->pending = 0;
1971 EV_CB_INVOKE (p->w, p->events); 2667 EV_CB_INVOKE (p->w, p->events);
1972 EV_FREQUENT_CHECK; 2668 EV_FREQUENT_CHECK;
1973 } 2669 }
… …
2030 EV_FREQUENT_CHECK; 2726 EV_FREQUENT_CHECK;
2031 feed_reverse (EV_A_ (W)w); 2727 feed_reverse (EV_A_ (W)w);
2032 } 2728 }
2033 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2729 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2034 2730
2035 feed_reverse_done (EV_A_ EV_TIMEOUT); 2731 feed_reverse_done (EV_A_ EV_TIMER);
2036 } 2732 }
2037} 2733}
2038 2734
2039#if EV_PERIODIC_ENABLE 2735#if EV_PERIODIC_ENABLE
2736
2737static void noinline
2738periodic_recalc (EV_P_ ev_periodic *w)
2739{
2740 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2741 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2742
2743 /* the above almost always errs on the low side */
2744 while (at <= ev_rt_now)
2745 {
2746 ev_tstamp nat = at + w->interval;
2747
2748 /* when resolution fails us, we use ev_rt_now */
2749 if (expect_false (nat == at))
2750 {
2751 at = ev_rt_now;
2752 break;
2753 }
2754
2755 at = nat;
2756 }
2757
2758 ev_at (w) = at;
2759}
2760
2040/* make periodics pending */ 2761/* make periodics pending */
2041inline_size void 2762inline_size void
2042periodics_reify (EV_P) 2763periodics_reify (EV_P)
2043{ 2764{
2044 EV_FREQUENT_CHECK; 2765 EV_FREQUENT_CHECK;
… …
2063 ANHE_at_cache (periodics [HEAP0]); 2784 ANHE_at_cache (periodics [HEAP0]);
2064 downheap (periodics, periodiccnt, HEAP0); 2785 downheap (periodics, periodiccnt, HEAP0);
2065 } 2786 }
2066 else if (w->interval) 2787 else if (w->interval)
2067 { 2788 {
2068 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2789 periodic_recalc (EV_A_ w);
2069 /* if next trigger time is not sufficiently in the future, put it there */
2070 /* this might happen because of floating point inexactness */
2071 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2072 {
2073 ev_at (w) += w->interval;
2074
2075 /* if interval is unreasonably low we might still have a time in the past */
2076 /* so correct this. this will make the periodic very inexact, but the user */
2077 /* has effectively asked to get triggered more often than possible */
2078 if (ev_at (w) < ev_rt_now)
2079 ev_at (w) = ev_rt_now;
2080 }
2081
2082 ANHE_at_cache (periodics [HEAP0]); 2790 ANHE_at_cache (periodics [HEAP0]);
2083 downheap (periodics, periodiccnt, HEAP0); 2791 downheap (periodics, periodiccnt, HEAP0);
2084 } 2792 }
2085 else 2793 else
2086 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2794 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2093 feed_reverse_done (EV_A_ EV_PERIODIC); 2801 feed_reverse_done (EV_A_ EV_PERIODIC);
2094 } 2802 }
2095} 2803}
2096 2804
2097/* simply recalculate all periodics */ 2805/* simply recalculate all periodics */
2098/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2806/* TODO: maybe ensure that at least one event happens when jumping forward? */
2099static void noinline 2807static void noinline ecb_cold
2100periodics_reschedule (EV_P) 2808periodics_reschedule (EV_P)
2101{ 2809{
2102 int i; 2810 int i;
2103 2811
2104 /* adjust periodics after time jump */ 2812 /* adjust periodics after time jump */
… …
2107 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2815 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2108 2816
2109 if (w->reschedule_cb) 2817 if (w->reschedule_cb)
2110 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2818 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2111 else if (w->interval) 2819 else if (w->interval)
2112 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2820 periodic_recalc (EV_A_ w);
2113 2821
2114 ANHE_at_cache (periodics [i]); 2822 ANHE_at_cache (periodics [i]);
2115 } 2823 }
2116 2824
2117 reheap (periodics, periodiccnt); 2825 reheap (periodics, periodiccnt);
2118} 2826}
2119#endif 2827#endif
2120 2828
2121/* adjust all timers by a given offset */ 2829/* adjust all timers by a given offset */
2122static void noinline 2830static void noinline ecb_cold
2123timers_reschedule (EV_P_ ev_tstamp adjust) 2831timers_reschedule (EV_P_ ev_tstamp adjust)
2124{ 2832{
2125 int i; 2833 int i;
2126 2834
2127 for (i = 0; i < timercnt; ++i) 2835 for (i = 0; i < timercnt; ++i)
… …
2131 ANHE_at_cache (*he); 2839 ANHE_at_cache (*he);
2132 } 2840 }
2133} 2841}
2134 2842
2135/* fetch new monotonic and realtime times from the kernel */ 2843/* fetch new monotonic and realtime times from the kernel */
2136/* also detetc if there was a timejump, and act accordingly */ 2844/* also detect if there was a timejump, and act accordingly */
2137inline_speed void 2845inline_speed void
2138time_update (EV_P_ ev_tstamp max_block) 2846time_update (EV_P_ ev_tstamp max_block)
2139{ 2847{
2140#if EV_USE_MONOTONIC 2848#if EV_USE_MONOTONIC
2141 if (expect_true (have_monotonic)) 2849 if (expect_true (have_monotonic))
… …
2164 * doesn't hurt either as we only do this on time-jumps or 2872 * doesn't hurt either as we only do this on time-jumps or
2165 * in the unlikely event of having been preempted here. 2873 * in the unlikely event of having been preempted here.
2166 */ 2874 */
2167 for (i = 4; --i; ) 2875 for (i = 4; --i; )
2168 { 2876 {
2877 ev_tstamp diff;
2169 rtmn_diff = ev_rt_now - mn_now; 2878 rtmn_diff = ev_rt_now - mn_now;
2170 2879
2880 diff = odiff - rtmn_diff;
2881
2171 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2882 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2172 return; /* all is well */ 2883 return; /* all is well */
2173 2884
2174 ev_rt_now = ev_time (); 2885 ev_rt_now = ev_time ();
2175 mn_now = get_clock (); 2886 mn_now = get_clock ();
2176 now_floor = mn_now; 2887 now_floor = mn_now;
… …
2199 mn_now = ev_rt_now; 2910 mn_now = ev_rt_now;
2200 } 2911 }
2201} 2912}
2202 2913
2203void 2914void
2204ev_loop (EV_P_ int flags) 2915ev_run (EV_P_ int flags)
2205{ 2916{
2206#if EV_MINIMAL < 2 2917#if EV_FEATURE_API
2207 ++loop_depth; 2918 ++loop_depth;
2208#endif 2919#endif
2209 2920
2210 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2921 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2211 2922
2212 loop_done = EVUNLOOP_CANCEL; 2923 loop_done = EVBREAK_CANCEL;
2213 2924
2214 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2925 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2215 2926
2216 do 2927 do
2217 { 2928 {
2218#if EV_VERIFY >= 2 2929#if EV_VERIFY >= 2
2219 ev_loop_verify (EV_A); 2930 ev_verify (EV_A);
2220#endif 2931#endif
2221 2932
2222#ifndef _WIN32 2933#ifndef _WIN32
2223 if (expect_false (curpid)) /* penalise the forking check even more */ 2934 if (expect_false (curpid)) /* penalise the forking check even more */
2224 if (expect_false (getpid () != curpid)) 2935 if (expect_false (getpid () != curpid))
… …
2236 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2947 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2237 EV_INVOKE_PENDING; 2948 EV_INVOKE_PENDING;
2238 } 2949 }
2239#endif 2950#endif
2240 2951
2952#if EV_PREPARE_ENABLE
2241 /* queue prepare watchers (and execute them) */ 2953 /* queue prepare watchers (and execute them) */
2242 if (expect_false (preparecnt)) 2954 if (expect_false (preparecnt))
2243 { 2955 {
2244 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2956 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2245 EV_INVOKE_PENDING; 2957 EV_INVOKE_PENDING;
2246 } 2958 }
2959#endif
2247 2960
2248 if (expect_false (loop_done)) 2961 if (expect_false (loop_done))
2249 break; 2962 break;
2250 2963
2251 /* we might have forked, so reify kernel state if necessary */ 2964 /* we might have forked, so reify kernel state if necessary */
… …
2258 /* calculate blocking time */ 2971 /* calculate blocking time */
2259 { 2972 {
2260 ev_tstamp waittime = 0.; 2973 ev_tstamp waittime = 0.;
2261 ev_tstamp sleeptime = 0.; 2974 ev_tstamp sleeptime = 0.;
2262 2975
2976 /* remember old timestamp for io_blocktime calculation */
2977 ev_tstamp prev_mn_now = mn_now;
2978
2979 /* update time to cancel out callback processing overhead */
2980 time_update (EV_A_ 1e100);
2981
2982 /* from now on, we want a pipe-wake-up */
2983 pipe_write_wanted = 1;
2984
2985 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2986
2263 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2987 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2264 { 2988 {
2265 /* remember old timestamp for io_blocktime calculation */
2266 ev_tstamp prev_mn_now = mn_now;
2267
2268 /* update time to cancel out callback processing overhead */
2269 time_update (EV_A_ 1e100);
2270
2271 waittime = MAX_BLOCKTIME; 2989 waittime = MAX_BLOCKTIME;
2272 2990
2273 if (timercnt) 2991 if (timercnt)
2274 { 2992 {
2275 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2993 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2276 if (waittime > to) waittime = to; 2994 if (waittime > to) waittime = to;
2277 } 2995 }
2278 2996
2279#if EV_PERIODIC_ENABLE 2997#if EV_PERIODIC_ENABLE
2280 if (periodiccnt) 2998 if (periodiccnt)
2281 { 2999 {
2282 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3000 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2283 if (waittime > to) waittime = to; 3001 if (waittime > to) waittime = to;
2284 } 3002 }
2285#endif 3003#endif
2286 3004
2287 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3005 /* don't let timeouts decrease the waittime below timeout_blocktime */
2288 if (expect_false (waittime < timeout_blocktime)) 3006 if (expect_false (waittime < timeout_blocktime))
2289 waittime = timeout_blocktime; 3007 waittime = timeout_blocktime;
3008
3009 /* at this point, we NEED to wait, so we have to ensure */
3010 /* to pass a minimum nonzero value to the backend */
3011 if (expect_false (waittime < backend_mintime))
3012 waittime = backend_mintime;
2290 3013
2291 /* extra check because io_blocktime is commonly 0 */ 3014 /* extra check because io_blocktime is commonly 0 */
2292 if (expect_false (io_blocktime)) 3015 if (expect_false (io_blocktime))
2293 { 3016 {
2294 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3017 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2295 3018
2296 if (sleeptime > waittime - backend_fudge) 3019 if (sleeptime > waittime - backend_mintime)
2297 sleeptime = waittime - backend_fudge; 3020 sleeptime = waittime - backend_mintime;
2298 3021
2299 if (expect_true (sleeptime > 0.)) 3022 if (expect_true (sleeptime > 0.))
2300 { 3023 {
2301 ev_sleep (sleeptime); 3024 ev_sleep (sleeptime);
2302 waittime -= sleeptime; 3025 waittime -= sleeptime;
2303 } 3026 }
2304 } 3027 }
2305 } 3028 }
2306 3029
2307#if EV_MINIMAL < 2 3030#if EV_FEATURE_API
2308 ++loop_count; 3031 ++loop_count;
2309#endif 3032#endif
2310 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3033 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2311 backend_poll (EV_A_ waittime); 3034 backend_poll (EV_A_ waittime);
2312 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3035 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3036
3037 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3038
3039 if (pipe_write_skipped)
3040 {
3041 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3042 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3043 }
3044
2313 3045
2314 /* update ev_rt_now, do magic */ 3046 /* update ev_rt_now, do magic */
2315 time_update (EV_A_ waittime + sleeptime); 3047 time_update (EV_A_ waittime + sleeptime);
2316 } 3048 }
2317 3049
… …
2324#if EV_IDLE_ENABLE 3056#if EV_IDLE_ENABLE
2325 /* queue idle watchers unless other events are pending */ 3057 /* queue idle watchers unless other events are pending */
2326 idle_reify (EV_A); 3058 idle_reify (EV_A);
2327#endif 3059#endif
2328 3060
3061#if EV_CHECK_ENABLE
2329 /* queue check watchers, to be executed first */ 3062 /* queue check watchers, to be executed first */
2330 if (expect_false (checkcnt)) 3063 if (expect_false (checkcnt))
2331 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3064 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3065#endif
2332 3066
2333 EV_INVOKE_PENDING; 3067 EV_INVOKE_PENDING;
2334 } 3068 }
2335 while (expect_true ( 3069 while (expect_true (
2336 activecnt 3070 activecnt
2337 && !loop_done 3071 && !loop_done
2338 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3072 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2339 )); 3073 ));
2340 3074
2341 if (loop_done == EVUNLOOP_ONE) 3075 if (loop_done == EVBREAK_ONE)
2342 loop_done = EVUNLOOP_CANCEL; 3076 loop_done = EVBREAK_CANCEL;
2343 3077
2344#if EV_MINIMAL < 2 3078#if EV_FEATURE_API
2345 --loop_depth; 3079 --loop_depth;
2346#endif 3080#endif
2347} 3081}
2348 3082
2349void 3083void
2350ev_unloop (EV_P_ int how) 3084ev_break (EV_P_ int how)
2351{ 3085{
2352 loop_done = how; 3086 loop_done = how;
2353} 3087}
2354 3088
2355void 3089void
… …
2475 3209
2476 if (expect_false (ev_is_active (w))) 3210 if (expect_false (ev_is_active (w)))
2477 return; 3211 return;
2478 3212
2479 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3213 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2480 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3214 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2481 3215
2482 EV_FREQUENT_CHECK; 3216 EV_FREQUENT_CHECK;
2483 3217
2484 ev_start (EV_A_ (W)w, 1); 3218 ev_start (EV_A_ (W)w, 1);
2485 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3219 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2503 EV_FREQUENT_CHECK; 3237 EV_FREQUENT_CHECK;
2504 3238
2505 wlist_del (&anfds[w->fd].head, (WL)w); 3239 wlist_del (&anfds[w->fd].head, (WL)w);
2506 ev_stop (EV_A_ (W)w); 3240 ev_stop (EV_A_ (W)w);
2507 3241
2508 fd_change (EV_A_ w->fd, 1); 3242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2509 3243
2510 EV_FREQUENT_CHECK; 3244 EV_FREQUENT_CHECK;
2511} 3245}
2512 3246
2513void noinline 3247void noinline
… …
2555 timers [active] = timers [timercnt + HEAP0]; 3289 timers [active] = timers [timercnt + HEAP0];
2556 adjustheap (timers, timercnt, active); 3290 adjustheap (timers, timercnt, active);
2557 } 3291 }
2558 } 3292 }
2559 3293
2560 EV_FREQUENT_CHECK;
2561
2562 ev_at (w) -= mn_now; 3294 ev_at (w) -= mn_now;
2563 3295
2564 ev_stop (EV_A_ (W)w); 3296 ev_stop (EV_A_ (W)w);
3297
3298 EV_FREQUENT_CHECK;
2565} 3299}
2566 3300
2567void noinline 3301void noinline
2568ev_timer_again (EV_P_ ev_timer *w) 3302ev_timer_again (EV_P_ ev_timer *w)
2569{ 3303{
2570 EV_FREQUENT_CHECK; 3304 EV_FREQUENT_CHECK;
3305
3306 clear_pending (EV_A_ (W)w);
2571 3307
2572 if (ev_is_active (w)) 3308 if (ev_is_active (w))
2573 { 3309 {
2574 if (w->repeat) 3310 if (w->repeat)
2575 { 3311 {
… …
2605 if (w->reschedule_cb) 3341 if (w->reschedule_cb)
2606 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3342 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2607 else if (w->interval) 3343 else if (w->interval)
2608 { 3344 {
2609 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3345 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2610 /* this formula differs from the one in periodic_reify because we do not always round up */ 3346 periodic_recalc (EV_A_ w);
2611 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2612 } 3347 }
2613 else 3348 else
2614 ev_at (w) = w->offset; 3349 ev_at (w) = w->offset;
2615 3350
2616 EV_FREQUENT_CHECK; 3351 EV_FREQUENT_CHECK;
… …
2648 periodics [active] = periodics [periodiccnt + HEAP0]; 3383 periodics [active] = periodics [periodiccnt + HEAP0];
2649 adjustheap (periodics, periodiccnt, active); 3384 adjustheap (periodics, periodiccnt, active);
2650 } 3385 }
2651 } 3386 }
2652 3387
2653 EV_FREQUENT_CHECK;
2654
2655 ev_stop (EV_A_ (W)w); 3388 ev_stop (EV_A_ (W)w);
3389
3390 EV_FREQUENT_CHECK;
2656} 3391}
2657 3392
2658void noinline 3393void noinline
2659ev_periodic_again (EV_P_ ev_periodic *w) 3394ev_periodic_again (EV_P_ ev_periodic *w)
2660{ 3395{
… …
2665#endif 3400#endif
2666 3401
2667#ifndef SA_RESTART 3402#ifndef SA_RESTART
2668# define SA_RESTART 0 3403# define SA_RESTART 0
2669#endif 3404#endif
3405
3406#if EV_SIGNAL_ENABLE
2670 3407
2671void noinline 3408void noinline
2672ev_signal_start (EV_P_ ev_signal *w) 3409ev_signal_start (EV_P_ ev_signal *w)
2673{ 3410{
2674 if (expect_false (ev_is_active (w))) 3411 if (expect_false (ev_is_active (w)))
… …
2721 if (!((WL)w)->next) 3458 if (!((WL)w)->next)
2722# if EV_USE_SIGNALFD 3459# if EV_USE_SIGNALFD
2723 if (sigfd < 0) /*TODO*/ 3460 if (sigfd < 0) /*TODO*/
2724# endif 3461# endif
2725 { 3462 {
2726# if _WIN32 3463# ifdef _WIN32
3464 evpipe_init (EV_A);
3465
2727 signal (w->signum, ev_sighandler); 3466 signal (w->signum, ev_sighandler);
2728# else 3467# else
2729 struct sigaction sa; 3468 struct sigaction sa;
2730 3469
2731 evpipe_init (EV_A); 3470 evpipe_init (EV_A);
… …
2733 sa.sa_handler = ev_sighandler; 3472 sa.sa_handler = ev_sighandler;
2734 sigfillset (&sa.sa_mask); 3473 sigfillset (&sa.sa_mask);
2735 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3474 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2736 sigaction (w->signum, &sa, 0); 3475 sigaction (w->signum, &sa, 0);
2737 3476
3477 if (origflags & EVFLAG_NOSIGMASK)
3478 {
2738 sigemptyset (&sa.sa_mask); 3479 sigemptyset (&sa.sa_mask);
2739 sigaddset (&sa.sa_mask, w->signum); 3480 sigaddset (&sa.sa_mask, w->signum);
2740 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3481 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3482 }
2741#endif 3483#endif
2742 } 3484 }
2743 3485
2744 EV_FREQUENT_CHECK; 3486 EV_FREQUENT_CHECK;
2745} 3487}
… …
2762 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3504 signals [w->signum - 1].loop = 0; /* unattach from signal */
2763#endif 3505#endif
2764#if EV_USE_SIGNALFD 3506#if EV_USE_SIGNALFD
2765 if (sigfd >= 0) 3507 if (sigfd >= 0)
2766 { 3508 {
2767 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3509 sigset_t ss;
3510
3511 sigemptyset (&ss);
3512 sigaddset (&ss, w->signum);
2768 sigdelset (&sigfd_set, w->signum); 3513 sigdelset (&sigfd_set, w->signum);
3514
2769 signalfd (sigfd, &sigfd_set, 0); 3515 signalfd (sigfd, &sigfd_set, 0);
2770 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3516 sigprocmask (SIG_UNBLOCK, &ss, 0);
2771 /*TODO: maybe unblock signal? */
2772 } 3517 }
2773 else 3518 else
2774#endif 3519#endif
2775 signal (w->signum, SIG_DFL); 3520 signal (w->signum, SIG_DFL);
2776 } 3521 }
2777 3522
2778 EV_FREQUENT_CHECK; 3523 EV_FREQUENT_CHECK;
2779} 3524}
2780 3525
3526#endif
3527
3528#if EV_CHILD_ENABLE
3529
2781void 3530void
2782ev_child_start (EV_P_ ev_child *w) 3531ev_child_start (EV_P_ ev_child *w)
2783{ 3532{
2784#if EV_MULTIPLICITY 3533#if EV_MULTIPLICITY
2785 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3534 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
… …
2788 return; 3537 return;
2789 3538
2790 EV_FREQUENT_CHECK; 3539 EV_FREQUENT_CHECK;
2791 3540
2792 ev_start (EV_A_ (W)w, 1); 3541 ev_start (EV_A_ (W)w, 1);
2793 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3542 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2794 3543
2795 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
2796} 3545}
2797 3546
2798void 3547void
… …
2802 if (expect_false (!ev_is_active (w))) 3551 if (expect_false (!ev_is_active (w)))
2803 return; 3552 return;
2804 3553
2805 EV_FREQUENT_CHECK; 3554 EV_FREQUENT_CHECK;
2806 3555
2807 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3556 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2808 ev_stop (EV_A_ (W)w); 3557 ev_stop (EV_A_ (W)w);
2809 3558
2810 EV_FREQUENT_CHECK; 3559 EV_FREQUENT_CHECK;
2811} 3560}
3561
3562#endif
2812 3563
2813#if EV_STAT_ENABLE 3564#if EV_STAT_ENABLE
2814 3565
2815# ifdef _WIN32 3566# ifdef _WIN32
2816# undef lstat 3567# undef lstat
… …
2822#define MIN_STAT_INTERVAL 0.1074891 3573#define MIN_STAT_INTERVAL 0.1074891
2823 3574
2824static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3575static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2825 3576
2826#if EV_USE_INOTIFY 3577#if EV_USE_INOTIFY
2827# define EV_INOTIFY_BUFSIZE 8192 3578
3579/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3580# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2828 3581
2829static void noinline 3582static void noinline
2830infy_add (EV_P_ ev_stat *w) 3583infy_add (EV_P_ ev_stat *w)
2831{ 3584{
2832 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3585 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2833 3586
2834 if (w->wd < 0) 3587 if (w->wd >= 0)
3588 {
3589 struct statfs sfs;
3590
3591 /* now local changes will be tracked by inotify, but remote changes won't */
3592 /* unless the filesystem is known to be local, we therefore still poll */
3593 /* also do poll on <2.6.25, but with normal frequency */
3594
3595 if (!fs_2625)
3596 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3597 else if (!statfs (w->path, &sfs)
3598 && (sfs.f_type == 0x1373 /* devfs */
3599 || sfs.f_type == 0xEF53 /* ext2/3 */
3600 || sfs.f_type == 0x3153464a /* jfs */
3601 || sfs.f_type == 0x52654973 /* reiser3 */
3602 || sfs.f_type == 0x01021994 /* tempfs */
3603 || sfs.f_type == 0x58465342 /* xfs */))
3604 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3605 else
3606 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2835 { 3607 }
3608 else
3609 {
3610 /* can't use inotify, continue to stat */
2836 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3611 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2837 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2838 3612
2839 /* monitor some parent directory for speedup hints */ 3613 /* if path is not there, monitor some parent directory for speedup hints */
2840 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3614 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2841 /* but an efficiency issue only */ 3615 /* but an efficiency issue only */
2842 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3616 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2843 { 3617 {
2844 char path [4096]; 3618 char path [4096];
… …
2854 if (!pend || pend == path) 3628 if (!pend || pend == path)
2855 break; 3629 break;
2856 3630
2857 *pend = 0; 3631 *pend = 0;
2858 w->wd = inotify_add_watch (fs_fd, path, mask); 3632 w->wd = inotify_add_watch (fs_fd, path, mask);
2859 } 3633 }
2860 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3634 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2861 } 3635 }
2862 } 3636 }
2863 3637
2864 if (w->wd >= 0) 3638 if (w->wd >= 0)
2865 {
2866 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3639 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2867 3640
2868 /* now local changes will be tracked by inotify, but remote changes won't */ 3641 /* now re-arm timer, if required */
2869 /* unless the filesystem it known to be local, we therefore still poll */ 3642 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2870 /* also do poll on <2.6.25, but with normal frequency */
2871 struct statfs sfs;
2872
2873 if (fs_2625 && !statfs (w->path, &sfs))
2874 if (sfs.f_type == 0x1373 /* devfs */
2875 || sfs.f_type == 0xEF53 /* ext2/3 */
2876 || sfs.f_type == 0x3153464a /* jfs */
2877 || sfs.f_type == 0x52654973 /* reiser3 */
2878 || sfs.f_type == 0x01021994 /* tempfs */
2879 || sfs.f_type == 0x58465342 /* xfs */)
2880 return;
2881
2882 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2883 ev_timer_again (EV_A_ &w->timer); 3643 ev_timer_again (EV_A_ &w->timer);
2884 } 3644 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2885} 3645}
2886 3646
2887static void noinline 3647static void noinline
2888infy_del (EV_P_ ev_stat *w) 3648infy_del (EV_P_ ev_stat *w)
2889{ 3649{
… …
2892 3652
2893 if (wd < 0) 3653 if (wd < 0)
2894 return; 3654 return;
2895 3655
2896 w->wd = -2; 3656 w->wd = -2;
2897 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3657 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2898 wlist_del (&fs_hash [slot].head, (WL)w); 3658 wlist_del (&fs_hash [slot].head, (WL)w);
2899 3659
2900 /* remove this watcher, if others are watching it, they will rearm */ 3660 /* remove this watcher, if others are watching it, they will rearm */
2901 inotify_rm_watch (fs_fd, wd); 3661 inotify_rm_watch (fs_fd, wd);
2902} 3662}
… …
2904static void noinline 3664static void noinline
2905infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3665infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2906{ 3666{
2907 if (slot < 0) 3667 if (slot < 0)
2908 /* overflow, need to check for all hash slots */ 3668 /* overflow, need to check for all hash slots */
2909 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3669 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2910 infy_wd (EV_A_ slot, wd, ev); 3670 infy_wd (EV_A_ slot, wd, ev);
2911 else 3671 else
2912 { 3672 {
2913 WL w_; 3673 WL w_;
2914 3674
2915 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3675 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2916 { 3676 {
2917 ev_stat *w = (ev_stat *)w_; 3677 ev_stat *w = (ev_stat *)w_;
2918 w_ = w_->next; /* lets us remove this watcher and all before it */ 3678 w_ = w_->next; /* lets us remove this watcher and all before it */
2919 3679
2920 if (w->wd == wd || wd == -1) 3680 if (w->wd == wd || wd == -1)
2921 { 3681 {
2922 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3682 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2923 { 3683 {
2924 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3684 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2925 w->wd = -1; 3685 w->wd = -1;
2926 infy_add (EV_A_ w); /* re-add, no matter what */ 3686 infy_add (EV_A_ w); /* re-add, no matter what */
2927 } 3687 }
2928 3688
2929 stat_timer_cb (EV_A_ &w->timer, 0); 3689 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2934 3694
2935static void 3695static void
2936infy_cb (EV_P_ ev_io *w, int revents) 3696infy_cb (EV_P_ ev_io *w, int revents)
2937{ 3697{
2938 char buf [EV_INOTIFY_BUFSIZE]; 3698 char buf [EV_INOTIFY_BUFSIZE];
2939 struct inotify_event *ev = (struct inotify_event *)buf;
2940 int ofs; 3699 int ofs;
2941 int len = read (fs_fd, buf, sizeof (buf)); 3700 int len = read (fs_fd, buf, sizeof (buf));
2942 3701
2943 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3702 for (ofs = 0; ofs < len; )
3703 {
3704 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2944 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3705 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3706 ofs += sizeof (struct inotify_event) + ev->len;
3707 }
2945} 3708}
2946 3709
2947inline_size void 3710inline_size void ecb_cold
2948check_2625 (EV_P) 3711ev_check_2625 (EV_P)
2949{ 3712{
2950 /* kernels < 2.6.25 are borked 3713 /* kernels < 2.6.25 are borked
2951 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3714 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2952 */ 3715 */
2953 struct utsname buf; 3716 if (ev_linux_version () < 0x020619)
2954 int major, minor, micro;
2955
2956 if (uname (&buf))
2957 return; 3717 return;
2958 3718
2959 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2960 return;
2961
2962 if (major < 2
2963 || (major == 2 && minor < 6)
2964 || (major == 2 && minor == 6 && micro < 25))
2965 return;
2966
2967 fs_2625 = 1; 3719 fs_2625 = 1;
3720}
3721
3722inline_size int
3723infy_newfd (void)
3724{
3725#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3726 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3727 if (fd >= 0)
3728 return fd;
3729#endif
3730 return inotify_init ();
2968} 3731}
2969 3732
2970inline_size void 3733inline_size void
2971infy_init (EV_P) 3734infy_init (EV_P)
2972{ 3735{
2973 if (fs_fd != -2) 3736 if (fs_fd != -2)
2974 return; 3737 return;
2975 3738
2976 fs_fd = -1; 3739 fs_fd = -1;
2977 3740
2978 check_2625 (EV_A); 3741 ev_check_2625 (EV_A);
2979 3742
2980 fs_fd = inotify_init (); 3743 fs_fd = infy_newfd ();
2981 3744
2982 if (fs_fd >= 0) 3745 if (fs_fd >= 0)
2983 { 3746 {
3747 fd_intern (fs_fd);
2984 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3748 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2985 ev_set_priority (&fs_w, EV_MAXPRI); 3749 ev_set_priority (&fs_w, EV_MAXPRI);
2986 ev_io_start (EV_A_ &fs_w); 3750 ev_io_start (EV_A_ &fs_w);
3751 ev_unref (EV_A);
2987 } 3752 }
2988} 3753}
2989 3754
2990inline_size void 3755inline_size void
2991infy_fork (EV_P) 3756infy_fork (EV_P)
… …
2993 int slot; 3758 int slot;
2994 3759
2995 if (fs_fd < 0) 3760 if (fs_fd < 0)
2996 return; 3761 return;
2997 3762
3763 ev_ref (EV_A);
3764 ev_io_stop (EV_A_ &fs_w);
2998 close (fs_fd); 3765 close (fs_fd);
2999 fs_fd = inotify_init (); 3766 fs_fd = infy_newfd ();
3000 3767
3768 if (fs_fd >= 0)
3769 {
3770 fd_intern (fs_fd);
3771 ev_io_set (&fs_w, fs_fd, EV_READ);
3772 ev_io_start (EV_A_ &fs_w);
3773 ev_unref (EV_A);
3774 }
3775
3001 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3776 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3002 { 3777 {
3003 WL w_ = fs_hash [slot].head; 3778 WL w_ = fs_hash [slot].head;
3004 fs_hash [slot].head = 0; 3779 fs_hash [slot].head = 0;
3005 3780
3006 while (w_) 3781 while (w_)
… …
3011 w->wd = -1; 3786 w->wd = -1;
3012 3787
3013 if (fs_fd >= 0) 3788 if (fs_fd >= 0)
3014 infy_add (EV_A_ w); /* re-add, no matter what */ 3789 infy_add (EV_A_ w); /* re-add, no matter what */
3015 else 3790 else
3791 {
3792 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3793 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3016 ev_timer_again (EV_A_ &w->timer); 3794 ev_timer_again (EV_A_ &w->timer);
3795 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3796 }
3017 } 3797 }
3018 } 3798 }
3019} 3799}
3020 3800
3021#endif 3801#endif
… …
3038static void noinline 3818static void noinline
3039stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3819stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3040{ 3820{
3041 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3821 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3042 3822
3043 /* we copy this here each the time so that */ 3823 ev_statdata prev = w->attr;
3044 /* prev has the old value when the callback gets invoked */
3045 w->prev = w->attr;
3046 ev_stat_stat (EV_A_ w); 3824 ev_stat_stat (EV_A_ w);
3047 3825
3048 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3826 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3049 if ( 3827 if (
3050 w->prev.st_dev != w->attr.st_dev 3828 prev.st_dev != w->attr.st_dev
3051 || w->prev.st_ino != w->attr.st_ino 3829 || prev.st_ino != w->attr.st_ino
3052 || w->prev.st_mode != w->attr.st_mode 3830 || prev.st_mode != w->attr.st_mode
3053 || w->prev.st_nlink != w->attr.st_nlink 3831 || prev.st_nlink != w->attr.st_nlink
3054 || w->prev.st_uid != w->attr.st_uid 3832 || prev.st_uid != w->attr.st_uid
3055 || w->prev.st_gid != w->attr.st_gid 3833 || prev.st_gid != w->attr.st_gid
3056 || w->prev.st_rdev != w->attr.st_rdev 3834 || prev.st_rdev != w->attr.st_rdev
3057 || w->prev.st_size != w->attr.st_size 3835 || prev.st_size != w->attr.st_size
3058 || w->prev.st_atime != w->attr.st_atime 3836 || prev.st_atime != w->attr.st_atime
3059 || w->prev.st_mtime != w->attr.st_mtime 3837 || prev.st_mtime != w->attr.st_mtime
3060 || w->prev.st_ctime != w->attr.st_ctime 3838 || prev.st_ctime != w->attr.st_ctime
3061 ) { 3839 ) {
3840 /* we only update w->prev on actual differences */
3841 /* in case we test more often than invoke the callback, */
3842 /* to ensure that prev is always different to attr */
3843 w->prev = prev;
3844
3062 #if EV_USE_INOTIFY 3845 #if EV_USE_INOTIFY
3063 if (fs_fd >= 0) 3846 if (fs_fd >= 0)
3064 { 3847 {
3065 infy_del (EV_A_ w); 3848 infy_del (EV_A_ w);
3066 infy_add (EV_A_ w); 3849 infy_add (EV_A_ w);
… …
3091 3874
3092 if (fs_fd >= 0) 3875 if (fs_fd >= 0)
3093 infy_add (EV_A_ w); 3876 infy_add (EV_A_ w);
3094 else 3877 else
3095#endif 3878#endif
3879 {
3096 ev_timer_again (EV_A_ &w->timer); 3880 ev_timer_again (EV_A_ &w->timer);
3881 ev_unref (EV_A);
3882 }
3097 3883
3098 ev_start (EV_A_ (W)w, 1); 3884 ev_start (EV_A_ (W)w, 1);
3099 3885
3100 EV_FREQUENT_CHECK; 3886 EV_FREQUENT_CHECK;
3101} 3887}
… …
3110 EV_FREQUENT_CHECK; 3896 EV_FREQUENT_CHECK;
3111 3897
3112#if EV_USE_INOTIFY 3898#if EV_USE_INOTIFY
3113 infy_del (EV_A_ w); 3899 infy_del (EV_A_ w);
3114#endif 3900#endif
3901
3902 if (ev_is_active (&w->timer))
3903 {
3904 ev_ref (EV_A);
3115 ev_timer_stop (EV_A_ &w->timer); 3905 ev_timer_stop (EV_A_ &w->timer);
3906 }
3116 3907
3117 ev_stop (EV_A_ (W)w); 3908 ev_stop (EV_A_ (W)w);
3118 3909
3119 EV_FREQUENT_CHECK; 3910 EV_FREQUENT_CHECK;
3120} 3911}
… …
3165 3956
3166 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
3167} 3958}
3168#endif 3959#endif
3169 3960
3961#if EV_PREPARE_ENABLE
3170void 3962void
3171ev_prepare_start (EV_P_ ev_prepare *w) 3963ev_prepare_start (EV_P_ ev_prepare *w)
3172{ 3964{
3173 if (expect_false (ev_is_active (w))) 3965 if (expect_false (ev_is_active (w)))
3174 return; 3966 return;
… …
3200 3992
3201 ev_stop (EV_A_ (W)w); 3993 ev_stop (EV_A_ (W)w);
3202 3994
3203 EV_FREQUENT_CHECK; 3995 EV_FREQUENT_CHECK;
3204} 3996}
3997#endif
3205 3998
3999#if EV_CHECK_ENABLE
3206void 4000void
3207ev_check_start (EV_P_ ev_check *w) 4001ev_check_start (EV_P_ ev_check *w)
3208{ 4002{
3209 if (expect_false (ev_is_active (w))) 4003 if (expect_false (ev_is_active (w)))
3210 return; 4004 return;
… …
3236 4030
3237 ev_stop (EV_A_ (W)w); 4031 ev_stop (EV_A_ (W)w);
3238 4032
3239 EV_FREQUENT_CHECK; 4033 EV_FREQUENT_CHECK;
3240} 4034}
4035#endif
3241 4036
3242#if EV_EMBED_ENABLE 4037#if EV_EMBED_ENABLE
3243void noinline 4038void noinline
3244ev_embed_sweep (EV_P_ ev_embed *w) 4039ev_embed_sweep (EV_P_ ev_embed *w)
3245{ 4040{
3246 ev_loop (w->other, EVLOOP_NONBLOCK); 4041 ev_run (w->other, EVRUN_NOWAIT);
3247} 4042}
3248 4043
3249static void 4044static void
3250embed_io_cb (EV_P_ ev_io *io, int revents) 4045embed_io_cb (EV_P_ ev_io *io, int revents)
3251{ 4046{
3252 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4047 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3253 4048
3254 if (ev_cb (w)) 4049 if (ev_cb (w))
3255 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4050 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3256 else 4051 else
3257 ev_loop (w->other, EVLOOP_NONBLOCK); 4052 ev_run (w->other, EVRUN_NOWAIT);
3258} 4053}
3259 4054
3260static void 4055static void
3261embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4056embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3262{ 4057{
… …
3266 EV_P = w->other; 4061 EV_P = w->other;
3267 4062
3268 while (fdchangecnt) 4063 while (fdchangecnt)
3269 { 4064 {
3270 fd_reify (EV_A); 4065 fd_reify (EV_A);
3271 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4066 ev_run (EV_A_ EVRUN_NOWAIT);
3272 } 4067 }
3273 } 4068 }
3274} 4069}
3275 4070
3276static void 4071static void
… …
3282 4077
3283 { 4078 {
3284 EV_P = w->other; 4079 EV_P = w->other;
3285 4080
3286 ev_loop_fork (EV_A); 4081 ev_loop_fork (EV_A);
3287 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4082 ev_run (EV_A_ EVRUN_NOWAIT);
3288 } 4083 }
3289 4084
3290 ev_embed_start (EV_A_ w); 4085 ev_embed_start (EV_A_ w);
3291} 4086}
3292 4087
… …
3340 4135
3341 ev_io_stop (EV_A_ &w->io); 4136 ev_io_stop (EV_A_ &w->io);
3342 ev_prepare_stop (EV_A_ &w->prepare); 4137 ev_prepare_stop (EV_A_ &w->prepare);
3343 ev_fork_stop (EV_A_ &w->fork); 4138 ev_fork_stop (EV_A_ &w->fork);
3344 4139
4140 ev_stop (EV_A_ (W)w);
4141
3345 EV_FREQUENT_CHECK; 4142 EV_FREQUENT_CHECK;
3346} 4143}
3347#endif 4144#endif
3348 4145
3349#if EV_FORK_ENABLE 4146#if EV_FORK_ENABLE
… …
3382 4179
3383 EV_FREQUENT_CHECK; 4180 EV_FREQUENT_CHECK;
3384} 4181}
3385#endif 4182#endif
3386 4183
4184#if EV_CLEANUP_ENABLE
4185void
4186ev_cleanup_start (EV_P_ ev_cleanup *w)
4187{
4188 if (expect_false (ev_is_active (w)))
4189 return;
4190
4191 EV_FREQUENT_CHECK;
4192
4193 ev_start (EV_A_ (W)w, ++cleanupcnt);
4194 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4195 cleanups [cleanupcnt - 1] = w;
4196
4197 /* cleanup watchers should never keep a refcount on the loop */
4198 ev_unref (EV_A);
4199 EV_FREQUENT_CHECK;
4200}
4201
4202void
4203ev_cleanup_stop (EV_P_ ev_cleanup *w)
4204{
4205 clear_pending (EV_A_ (W)w);
4206 if (expect_false (!ev_is_active (w)))
4207 return;
4208
4209 EV_FREQUENT_CHECK;
4210 ev_ref (EV_A);
4211
4212 {
4213 int active = ev_active (w);
4214
4215 cleanups [active - 1] = cleanups [--cleanupcnt];
4216 ev_active (cleanups [active - 1]) = active;
4217 }
4218
4219 ev_stop (EV_A_ (W)w);
4220
4221 EV_FREQUENT_CHECK;
4222}
4223#endif
4224
3387#if EV_ASYNC_ENABLE 4225#if EV_ASYNC_ENABLE
3388void 4226void
3389ev_async_start (EV_P_ ev_async *w) 4227ev_async_start (EV_P_ ev_async *w)
3390{ 4228{
3391 if (expect_false (ev_is_active (w))) 4229 if (expect_false (ev_is_active (w)))
3392 return; 4230 return;
4231
4232 w->sent = 0;
3393 4233
3394 evpipe_init (EV_A); 4234 evpipe_init (EV_A);
3395 4235
3396 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3397 4237
… …
3475{ 4315{
3476 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4316 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3477 4317
3478 if (expect_false (!once)) 4318 if (expect_false (!once))
3479 { 4319 {
3480 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4320 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3481 return; 4321 return;
3482 } 4322 }
3483 4323
3484 once->cb = cb; 4324 once->cb = cb;
3485 once->arg = arg; 4325 once->arg = arg;
… …
3500} 4340}
3501 4341
3502/*****************************************************************************/ 4342/*****************************************************************************/
3503 4343
3504#if EV_WALK_ENABLE 4344#if EV_WALK_ENABLE
3505void 4345void ecb_cold
3506ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4346ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3507{ 4347{
3508 int i, j; 4348 int i, j;
3509 ev_watcher_list *wl, *wn; 4349 ev_watcher_list *wl, *wn;
3510 4350
… …
3554 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4394 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3555#endif 4395#endif
3556 4396
3557#if EV_IDLE_ENABLE 4397#if EV_IDLE_ENABLE
3558 if (types & EV_IDLE) 4398 if (types & EV_IDLE)
3559 for (j = NUMPRI; i--; ) 4399 for (j = NUMPRI; j--; )
3560 for (i = idlecnt [j]; i--; ) 4400 for (i = idlecnt [j]; i--; )
3561 cb (EV_A_ EV_IDLE, idles [j][i]); 4401 cb (EV_A_ EV_IDLE, idles [j][i]);
3562#endif 4402#endif
3563 4403
3564#if EV_FORK_ENABLE 4404#if EV_FORK_ENABLE
… …
3572 if (types & EV_ASYNC) 4412 if (types & EV_ASYNC)
3573 for (i = asynccnt; i--; ) 4413 for (i = asynccnt; i--; )
3574 cb (EV_A_ EV_ASYNC, asyncs [i]); 4414 cb (EV_A_ EV_ASYNC, asyncs [i]);
3575#endif 4415#endif
3576 4416
4417#if EV_PREPARE_ENABLE
3577 if (types & EV_PREPARE) 4418 if (types & EV_PREPARE)
3578 for (i = preparecnt; i--; ) 4419 for (i = preparecnt; i--; )
3579#if EV_EMBED_ENABLE 4420# if EV_EMBED_ENABLE
3580 if (ev_cb (prepares [i]) != embed_prepare_cb) 4421 if (ev_cb (prepares [i]) != embed_prepare_cb)
3581#endif 4422# endif
3582 cb (EV_A_ EV_PREPARE, prepares [i]); 4423 cb (EV_A_ EV_PREPARE, prepares [i]);
4424#endif
3583 4425
4426#if EV_CHECK_ENABLE
3584 if (types & EV_CHECK) 4427 if (types & EV_CHECK)
3585 for (i = checkcnt; i--; ) 4428 for (i = checkcnt; i--; )
3586 cb (EV_A_ EV_CHECK, checks [i]); 4429 cb (EV_A_ EV_CHECK, checks [i]);
4430#endif
3587 4431
4432#if EV_SIGNAL_ENABLE
3588 if (types & EV_SIGNAL) 4433 if (types & EV_SIGNAL)
3589 for (i = 0; i < EV_NSIG - 1; ++i) 4434 for (i = 0; i < EV_NSIG - 1; ++i)
3590 for (wl = signals [i].head; wl; ) 4435 for (wl = signals [i].head; wl; )
3591 { 4436 {
3592 wn = wl->next; 4437 wn = wl->next;
3593 cb (EV_A_ EV_SIGNAL, wl); 4438 cb (EV_A_ EV_SIGNAL, wl);
3594 wl = wn; 4439 wl = wn;
3595 } 4440 }
4441#endif
3596 4442
4443#if EV_CHILD_ENABLE
3597 if (types & EV_CHILD) 4444 if (types & EV_CHILD)
3598 for (i = EV_PID_HASHSIZE; i--; ) 4445 for (i = (EV_PID_HASHSIZE); i--; )
3599 for (wl = childs [i]; wl; ) 4446 for (wl = childs [i]; wl; )
3600 { 4447 {
3601 wn = wl->next; 4448 wn = wl->next;
3602 cb (EV_A_ EV_CHILD, wl); 4449 cb (EV_A_ EV_CHILD, wl);
3603 wl = wn; 4450 wl = wn;
3604 } 4451 }
4452#endif
3605/* EV_STAT 0x00001000 /* stat data changed */ 4453/* EV_STAT 0x00001000 /* stat data changed */
3606/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4454/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3607} 4455}
3608#endif 4456#endif
3609 4457
3610#if EV_MULTIPLICITY 4458#if EV_MULTIPLICITY
3611 #include "ev_wrap.h" 4459 #include "ev_wrap.h"
3612#endif 4460#endif
3613 4461
3614#ifdef __cplusplus
3615}
3616#endif
3617

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