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Comparing libev/ev.c (file contents):
Revision 1.316 by root, Fri Sep 18 21:02:12 2009 UTC vs.
Revision 1.406 by root, Tue Jan 24 16:37:12 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__ >= 7)) 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
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags); 421EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif 422#endif
405 423
406#if EV_USE_SIGNALFD 424#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 425/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h> 426# include <stdint.h>
… …
414# define SFD_CLOEXEC O_CLOEXEC 432# define SFD_CLOEXEC O_CLOEXEC
415# else 433# else
416# define SFD_CLOEXEC 02000000 434# define SFD_CLOEXEC 02000000
417# endif 435# endif
418# endif 436# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags); 437EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
423 438
424struct signalfd_siginfo 439struct signalfd_siginfo
425{ 440{
426 uint32_t ssi_signo; 441 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)]; 442 char pad[128 - sizeof (uint32_t)];
428}; 443};
429# ifdef __cplusplus
430}
431# endif 444#endif
432#endif
433
434 445
435/**/ 446/**/
436 447
437#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
439#else 450#else
440# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
441#endif 452#endif
442 453
443/* 454/*
444 * This is used to avoid floating point rounding problems. 455 * This is used to work around floating point rounding problems.
445 * It is added to ev_rt_now when scheduling periodics
446 * to ensure progress, time-wise, even when rounding
447 * errors are against us.
448 * This value is good at least till the year 4000. 456 * This value is good at least till the year 4000.
449 * Better solutions welcome.
450 */ 457 */
451#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 */
452 460
453#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) */
454#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) */
455 463
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;
456#if __GNUC__ >= 4 508 #if __GNUC__
457# define expect(expr,value) __builtin_expect ((expr),(value)) 509 typedef signed long long int64_t;
458# 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
459#else 515#else
460# define expect(expr,value) (expr) 516 #include <inttypes.h>
461# define noinline
462# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
463# define inline
464# 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)))
465#endif 531 #endif
532#endif
466 533
534/*****************************************************************************/
535
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538
539#if ECB_NO_THREADS || ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0)
541#endif
542
543#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
545 #if __i386 || __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
549 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #elif __sparc || __sparc__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
565 #endif
566 #endif
567#endif
568
569#ifndef ECB_MEMORY_FENCE
570 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
571 #define ECB_MEMORY_FENCE __sync_synchronize ()
572 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
573 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
574 #elif _MSC_VER >= 1400 /* VC++ 2005 */
575 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
576 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
577 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
578 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
579 #elif defined(_WIN32)
580 #include <WinNT.h>
581 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
582 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
583 #include <mbarrier.h>
584 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
585 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
586 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if !ECB_AVOID_PTHREADS
592 /*
593 * if you get undefined symbol references to pthread_mutex_lock,
594 * or failure to find pthread.h, then you should implement
595 * the ECB_MEMORY_FENCE operations for your cpu/compiler
596 * OR provide pthread.h and link against the posix thread library
597 * of your system.
598 */
599 #include <pthread.h>
600 #define ECB_NEEDS_PTHREADS 1
601 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
602
603 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
604 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
605 #endif
606#endif
607
608#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
609 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
610#endif
611
612#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
613 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
614#endif
615
616/*****************************************************************************/
617
618#define ECB_C99 (__STDC_VERSION__ >= 199901L)
619
620#if __cplusplus
621 #define ecb_inline static inline
622#elif ECB_GCC_VERSION(2,5)
623 #define ecb_inline static __inline__
624#elif ECB_C99
625 #define ecb_inline static inline
626#else
627 #define ecb_inline static
628#endif
629
630#if ECB_GCC_VERSION(3,3)
631 #define ecb_restrict __restrict__
632#elif ECB_C99
633 #define ecb_restrict restrict
634#else
635 #define ecb_restrict
636#endif
637
638typedef int ecb_bool;
639
640#define ECB_CONCAT_(a, b) a ## b
641#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
642#define ECB_STRINGIFY_(a) # a
643#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
644
645#define ecb_function_ ecb_inline
646
647#if ECB_GCC_VERSION(3,1)
648 #define ecb_attribute(attrlist) __attribute__(attrlist)
649 #define ecb_is_constant(expr) __builtin_constant_p (expr)
650 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
651 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
652#else
653 #define ecb_attribute(attrlist)
654 #define ecb_is_constant(expr) 0
655 #define ecb_expect(expr,value) (expr)
656 #define ecb_prefetch(addr,rw,locality)
657#endif
658
659/* no emulation for ecb_decltype */
660#if ECB_GCC_VERSION(4,5)
661 #define ecb_decltype(x) __decltype(x)
662#elif ECB_GCC_VERSION(3,0)
663 #define ecb_decltype(x) __typeof(x)
664#endif
665
666#define ecb_noinline ecb_attribute ((__noinline__))
667#define ecb_noreturn ecb_attribute ((__noreturn__))
668#define ecb_unused ecb_attribute ((__unused__))
669#define ecb_const ecb_attribute ((__const__))
670#define ecb_pure ecb_attribute ((__pure__))
671
672#if ECB_GCC_VERSION(4,3)
673 #define ecb_artificial ecb_attribute ((__artificial__))
674 #define ecb_hot ecb_attribute ((__hot__))
675 #define ecb_cold ecb_attribute ((__cold__))
676#else
677 #define ecb_artificial
678 #define ecb_hot
679 #define ecb_cold
680#endif
681
682/* put around conditional expressions if you are very sure that the */
683/* expression is mostly true or mostly false. note that these return */
684/* booleans, not the expression. */
467#define expect_false(expr) expect ((expr) != 0, 0) 685#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
468#define expect_true(expr) expect ((expr) != 0, 1) 686#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
687/* for compatibility to the rest of the world */
688#define ecb_likely(expr) ecb_expect_true (expr)
689#define ecb_unlikely(expr) ecb_expect_false (expr)
690
691/* count trailing zero bits and count # of one bits */
692#if ECB_GCC_VERSION(3,4)
693 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
694 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
695 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
696 #define ecb_ctz32(x) __builtin_ctz (x)
697 #define ecb_ctz64(x) __builtin_ctzll (x)
698 #define ecb_popcount32(x) __builtin_popcount (x)
699 /* no popcountll */
700#else
701 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
702 ecb_function_ int
703 ecb_ctz32 (uint32_t x)
704 {
705 int r = 0;
706
707 x &= ~x + 1; /* this isolates the lowest bit */
708
709#if ECB_branchless_on_i386
710 r += !!(x & 0xaaaaaaaa) << 0;
711 r += !!(x & 0xcccccccc) << 1;
712 r += !!(x & 0xf0f0f0f0) << 2;
713 r += !!(x & 0xff00ff00) << 3;
714 r += !!(x & 0xffff0000) << 4;
715#else
716 if (x & 0xaaaaaaaa) r += 1;
717 if (x & 0xcccccccc) r += 2;
718 if (x & 0xf0f0f0f0) r += 4;
719 if (x & 0xff00ff00) r += 8;
720 if (x & 0xffff0000) r += 16;
721#endif
722
723 return r;
724 }
725
726 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
727 ecb_function_ int
728 ecb_ctz64 (uint64_t x)
729 {
730 int shift = x & 0xffffffffU ? 0 : 32;
731 return ecb_ctz32 (x >> shift) + shift;
732 }
733
734 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
735 ecb_function_ int
736 ecb_popcount32 (uint32_t x)
737 {
738 x -= (x >> 1) & 0x55555555;
739 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
740 x = ((x >> 4) + x) & 0x0f0f0f0f;
741 x *= 0x01010101;
742
743 return x >> 24;
744 }
745
746 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
747 ecb_function_ int ecb_ld32 (uint32_t x)
748 {
749 int r = 0;
750
751 if (x >> 16) { x >>= 16; r += 16; }
752 if (x >> 8) { x >>= 8; r += 8; }
753 if (x >> 4) { x >>= 4; r += 4; }
754 if (x >> 2) { x >>= 2; r += 2; }
755 if (x >> 1) { r += 1; }
756
757 return r;
758 }
759
760 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
761 ecb_function_ int ecb_ld64 (uint64_t x)
762 {
763 int r = 0;
764
765 if (x >> 32) { x >>= 32; r += 32; }
766
767 return r + ecb_ld32 (x);
768 }
769#endif
770
771ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
772ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
773{
774 return ( (x * 0x0802U & 0x22110U)
775 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
776}
777
778ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
779ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
780{
781 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
782 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
783 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
784 x = ( x >> 8 ) | ( x << 8);
785
786 return x;
787}
788
789ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
790ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
791{
792 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
793 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
794 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
795 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
796 x = ( x >> 16 ) | ( x << 16);
797
798 return x;
799}
800
801/* popcount64 is only available on 64 bit cpus as gcc builtin */
802/* so for this version we are lazy */
803ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
804ecb_function_ int
805ecb_popcount64 (uint64_t x)
806{
807 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
808}
809
810ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
811ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
812ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
813ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
814ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
815ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
816ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
817ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
818
819ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
820ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
821ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
822ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
823ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
824ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
825ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
826ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
827
828#if ECB_GCC_VERSION(4,3)
829 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
830 #define ecb_bswap32(x) __builtin_bswap32 (x)
831 #define ecb_bswap64(x) __builtin_bswap64 (x)
832#else
833 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
834 ecb_function_ uint16_t
835 ecb_bswap16 (uint16_t x)
836 {
837 return ecb_rotl16 (x, 8);
838 }
839
840 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
841 ecb_function_ uint32_t
842 ecb_bswap32 (uint32_t x)
843 {
844 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
845 }
846
847 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
848 ecb_function_ uint64_t
849 ecb_bswap64 (uint64_t x)
850 {
851 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
852 }
853#endif
854
855#if ECB_GCC_VERSION(4,5)
856 #define ecb_unreachable() __builtin_unreachable ()
857#else
858 /* this seems to work fine, but gcc always emits a warning for it :/ */
859 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
860 ecb_function_ void ecb_unreachable (void) { }
861#endif
862
863/* try to tell the compiler that some condition is definitely true */
864#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
865
866ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
867ecb_function_ unsigned char
868ecb_byteorder_helper (void)
869{
870 const uint32_t u = 0x11223344;
871 return *(unsigned char *)&u;
872}
873
874ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
875ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
876ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
877ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
878
879#if ECB_GCC_VERSION(3,0) || ECB_C99
880 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
881#else
882 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
883#endif
884
885#if __cplusplus
886 template<typename T>
887 static inline T ecb_div_rd (T val, T div)
888 {
889 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
890 }
891 template<typename T>
892 static inline T ecb_div_ru (T val, T div)
893 {
894 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
895 }
896#else
897 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
898 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
899#endif
900
901#if ecb_cplusplus_does_not_suck
902 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
903 template<typename T, int N>
904 static inline int ecb_array_length (const T (&arr)[N])
905 {
906 return N;
907 }
908#else
909 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
910#endif
911
912#endif
913
914/* ECB.H END */
915
916#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
917/* if your architecture doesn't need memory fences, e.g. because it is
918 * single-cpu/core, or if you use libev in a project that doesn't use libev
919 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
920 * libev, in which cases the memory fences become nops.
921 * alternatively, you can remove this #error and link against libpthread,
922 * which will then provide the memory fences.
923 */
924# error "memory fences not defined for your architecture, please report"
925#endif
926
927#ifndef ECB_MEMORY_FENCE
928# define ECB_MEMORY_FENCE do { } while (0)
929# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
930# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
931#endif
932
933#define expect_false(cond) ecb_expect_false (cond)
934#define expect_true(cond) ecb_expect_true (cond)
935#define noinline ecb_noinline
936
469#define inline_size static inline 937#define inline_size ecb_inline
470 938
471#if EV_MINIMAL 939#if EV_FEATURE_CODE
940# define inline_speed ecb_inline
941#else
472# define inline_speed static noinline 942# define inline_speed static noinline
473#else
474# define inline_speed static inline
475#endif 943#endif
476 944
477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 945#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478 946
479#if EV_MINPRI == EV_MAXPRI 947#if EV_MINPRI == EV_MAXPRI
… …
492#define ev_active(w) ((W)(w))->active 960#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at 961#define ev_at(w) ((WT)(w))->at
494 962
495#if EV_USE_REALTIME 963#if EV_USE_REALTIME
496/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 964/* sig_atomic_t is used to avoid per-thread variables or locking but still */
497/* giving it a reasonably high chance of working on typical architetcures */ 965/* giving it a reasonably high chance of working on typical architectures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 966static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif 967#endif
500 968
501#if EV_USE_MONOTONIC 969#if EV_USE_MONOTONIC
502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 970static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
504 972
505#ifndef EV_FD_TO_WIN32_HANDLE 973#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 974# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 975#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 976#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 977# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 978#endif
511#ifndef EV_WIN32_CLOSE_FD 979#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 980# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 981#endif
514 982
… …
516# include "ev_win32.c" 984# include "ev_win32.c"
517#endif 985#endif
518 986
519/*****************************************************************************/ 987/*****************************************************************************/
520 988
989/* define a suitable floor function (only used by periodics atm) */
990
991#if EV_USE_FLOOR
992# include <math.h>
993# define ev_floor(v) floor (v)
994#else
995
996#include <float.h>
997
998/* a floor() replacement function, should be independent of ev_tstamp type */
999static ev_tstamp noinline
1000ev_floor (ev_tstamp v)
1001{
1002 /* the choice of shift factor is not terribly important */
1003#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1004 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1005#else
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1007#endif
1008
1009 /* argument too large for an unsigned long? */
1010 if (expect_false (v >= shift))
1011 {
1012 ev_tstamp f;
1013
1014 if (v == v - 1.)
1015 return v; /* very large number */
1016
1017 f = shift * ev_floor (v * (1. / shift));
1018 return f + ev_floor (v - f);
1019 }
1020
1021 /* special treatment for negative args? */
1022 if (expect_false (v < 0.))
1023 {
1024 ev_tstamp f = -ev_floor (-v);
1025
1026 return f - (f == v ? 0 : 1);
1027 }
1028
1029 /* fits into an unsigned long */
1030 return (unsigned long)v;
1031}
1032
1033#endif
1034
1035/*****************************************************************************/
1036
1037#ifdef __linux
1038# include <sys/utsname.h>
1039#endif
1040
1041static unsigned int noinline ecb_cold
1042ev_linux_version (void)
1043{
1044#ifdef __linux
1045 unsigned int v = 0;
1046 struct utsname buf;
1047 int i;
1048 char *p = buf.release;
1049
1050 if (uname (&buf))
1051 return 0;
1052
1053 for (i = 3+1; --i; )
1054 {
1055 unsigned int c = 0;
1056
1057 for (;;)
1058 {
1059 if (*p >= '0' && *p <= '9')
1060 c = c * 10 + *p++ - '0';
1061 else
1062 {
1063 p += *p == '.';
1064 break;
1065 }
1066 }
1067
1068 v = (v << 8) | c;
1069 }
1070
1071 return v;
1072#else
1073 return 0;
1074#endif
1075}
1076
1077/*****************************************************************************/
1078
1079#if EV_AVOID_STDIO
1080static void noinline ecb_cold
1081ev_printerr (const char *msg)
1082{
1083 write (STDERR_FILENO, msg, strlen (msg));
1084}
1085#endif
1086
521static void (*syserr_cb)(const char *msg); 1087static void (*syserr_cb)(const char *msg);
522 1088
523void 1089void ecb_cold
524ev_set_syserr_cb (void (*cb)(const char *msg)) 1090ev_set_syserr_cb (void (*cb)(const char *msg))
525{ 1091{
526 syserr_cb = cb; 1092 syserr_cb = cb;
527} 1093}
528 1094
529static void noinline 1095static void noinline ecb_cold
530ev_syserr (const char *msg) 1096ev_syserr (const char *msg)
531{ 1097{
532 if (!msg) 1098 if (!msg)
533 msg = "(libev) system error"; 1099 msg = "(libev) system error";
534 1100
535 if (syserr_cb) 1101 if (syserr_cb)
536 syserr_cb (msg); 1102 syserr_cb (msg);
537 else 1103 else
538 { 1104 {
1105#if EV_AVOID_STDIO
1106 ev_printerr (msg);
1107 ev_printerr (": ");
1108 ev_printerr (strerror (errno));
1109 ev_printerr ("\n");
1110#else
539 perror (msg); 1111 perror (msg);
1112#endif
540 abort (); 1113 abort ();
541 } 1114 }
542} 1115}
543 1116
544static void * 1117static void *
545ev_realloc_emul (void *ptr, long size) 1118ev_realloc_emul (void *ptr, long size)
546{ 1119{
1120#if __GLIBC__
1121 return realloc (ptr, size);
1122#else
547 /* some systems, notably openbsd and darwin, fail to properly 1123 /* some systems, notably openbsd and darwin, fail to properly
548 * implement realloc (x, 0) (as required by both ansi c-98 and 1124 * implement realloc (x, 0) (as required by both ansi c-89 and
549 * the single unix specification, so work around them here. 1125 * the single unix specification, so work around them here.
550 */ 1126 */
551 1127
552 if (size) 1128 if (size)
553 return realloc (ptr, size); 1129 return realloc (ptr, size);
554 1130
555 free (ptr); 1131 free (ptr);
556 return 0; 1132 return 0;
1133#endif
557} 1134}
558 1135
559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1136static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
560 1137
561void 1138void ecb_cold
562ev_set_allocator (void *(*cb)(void *ptr, long size)) 1139ev_set_allocator (void *(*cb)(void *ptr, long size))
563{ 1140{
564 alloc = cb; 1141 alloc = cb;
565} 1142}
566 1143
… …
569{ 1146{
570 ptr = alloc (ptr, size); 1147 ptr = alloc (ptr, size);
571 1148
572 if (!ptr && size) 1149 if (!ptr && size)
573 { 1150 {
1151#if EV_AVOID_STDIO
1152 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1153#else
574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1154 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1155#endif
575 abort (); 1156 abort ();
576 } 1157 }
577 1158
578 return ptr; 1159 return ptr;
579} 1160}
… …
595 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1176 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
596 unsigned char unused; 1177 unsigned char unused;
597#if EV_USE_EPOLL 1178#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */ 1179 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif 1180#endif
600#if EV_SELECT_IS_WINSOCKET 1181#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
601 SOCKET handle; 1182 SOCKET handle;
1183#endif
1184#if EV_USE_IOCP
1185 OVERLAPPED or, ow;
602#endif 1186#endif
603} ANFD; 1187} ANFD;
604 1188
605/* stores the pending event set for a given watcher */ 1189/* stores the pending event set for a given watcher */
606typedef struct 1190typedef struct
… …
648 #undef VAR 1232 #undef VAR
649 }; 1233 };
650 #include "ev_wrap.h" 1234 #include "ev_wrap.h"
651 1235
652 static struct ev_loop default_loop_struct; 1236 static struct ev_loop default_loop_struct;
653 struct ev_loop *ev_default_loop_ptr; 1237 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
654 1238
655#else 1239#else
656 1240
657 ev_tstamp ev_rt_now; 1241 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
658 #define VAR(name,decl) static decl; 1242 #define VAR(name,decl) static decl;
659 #include "ev_vars.h" 1243 #include "ev_vars.h"
660 #undef VAR 1244 #undef VAR
661 1245
662 static int ev_default_loop_ptr; 1246 static int ev_default_loop_ptr;
663 1247
664#endif 1248#endif
665 1249
666#if EV_MINIMAL < 2 1250#if EV_FEATURE_API
667# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1251# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
668# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1252# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
669# define EV_INVOKE_PENDING invoke_cb (EV_A) 1253# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else 1254#else
671# define EV_RELEASE_CB (void)0 1255# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0 1256# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1257# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif 1258#endif
675 1259
676#define EVUNLOOP_RECURSE 0x80 1260#define EVBREAK_RECURSE 0x80
677 1261
678/*****************************************************************************/ 1262/*****************************************************************************/
679 1263
680#ifndef EV_HAVE_EV_TIME 1264#ifndef EV_HAVE_EV_TIME
681ev_tstamp 1265ev_tstamp
… …
725 if (delay > 0.) 1309 if (delay > 0.)
726 { 1310 {
727#if EV_USE_NANOSLEEP 1311#if EV_USE_NANOSLEEP
728 struct timespec ts; 1312 struct timespec ts;
729 1313
730 ts.tv_sec = (time_t)delay; 1314 EV_TS_SET (ts, delay);
731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
732
733 nanosleep (&ts, 0); 1315 nanosleep (&ts, 0);
734#elif defined(_WIN32) 1316#elif defined(_WIN32)
735 Sleep ((unsigned long)(delay * 1e3)); 1317 Sleep ((unsigned long)(delay * 1e3));
736#else 1318#else
737 struct timeval tv; 1319 struct timeval tv;
738 1320
739 tv.tv_sec = (time_t)delay;
740 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
741
742 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1321 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
743 /* something not guaranteed by newer posix versions, but guaranteed */ 1322 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */ 1323 /* by older ones */
1324 EV_TV_SET (tv, delay);
745 select (0, 0, 0, 0, &tv); 1325 select (0, 0, 0, 0, &tv);
746#endif 1326#endif
747 } 1327 }
748} 1328}
749 1329
750/*****************************************************************************/ 1330/*****************************************************************************/
751 1331
752#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1332#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
753 1333
754/* find a suitable new size for the given array, */ 1334/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */ 1335/* hopefully by rounding to a nice-to-malloc size */
756inline_size int 1336inline_size int
757array_nextsize (int elem, int cur, int cnt) 1337array_nextsize (int elem, int cur, int cnt)
758{ 1338{
759 int ncur = cur + 1; 1339 int ncur = cur + 1;
760 1340
761 do 1341 do
762 ncur <<= 1; 1342 ncur <<= 1;
763 while (cnt > ncur); 1343 while (cnt > ncur);
764 1344
765 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1345 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
766 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1346 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
767 { 1347 {
768 ncur *= elem; 1348 ncur *= elem;
769 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1349 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
770 ncur = ncur - sizeof (void *) * 4; 1350 ncur = ncur - sizeof (void *) * 4;
… …
772 } 1352 }
773 1353
774 return ncur; 1354 return ncur;
775} 1355}
776 1356
777static noinline void * 1357static void * noinline ecb_cold
778array_realloc (int elem, void *base, int *cur, int cnt) 1358array_realloc (int elem, void *base, int *cur, int cnt)
779{ 1359{
780 *cur = array_nextsize (elem, *cur, cnt); 1360 *cur = array_nextsize (elem, *cur, cnt);
781 return ev_realloc (base, elem * *cur); 1361 return ev_realloc (base, elem * *cur);
782} 1362}
… …
785 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1365 memset ((void *)(base), 0, sizeof (*(base)) * (count))
786 1366
787#define array_needsize(type,base,cur,cnt,init) \ 1367#define array_needsize(type,base,cur,cnt,init) \
788 if (expect_false ((cnt) > (cur))) \ 1368 if (expect_false ((cnt) > (cur))) \
789 { \ 1369 { \
790 int ocur_ = (cur); \ 1370 int ecb_unused ocur_ = (cur); \
791 (base) = (type *)array_realloc \ 1371 (base) = (type *)array_realloc \
792 (sizeof (type), (base), &(cur), (cnt)); \ 1372 (sizeof (type), (base), &(cur), (cnt)); \
793 init ((base) + (ocur_), (cur) - ocur_); \ 1373 init ((base) + (ocur_), (cur) - ocur_); \
794 } 1374 }
795 1375
… …
856} 1436}
857 1437
858/*****************************************************************************/ 1438/*****************************************************************************/
859 1439
860inline_speed void 1440inline_speed void
861fd_event_nc (EV_P_ int fd, int revents) 1441fd_event_nocheck (EV_P_ int fd, int revents)
862{ 1442{
863 ANFD *anfd = anfds + fd; 1443 ANFD *anfd = anfds + fd;
864 ev_io *w; 1444 ev_io *w;
865 1445
866 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1446 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
878fd_event (EV_P_ int fd, int revents) 1458fd_event (EV_P_ int fd, int revents)
879{ 1459{
880 ANFD *anfd = anfds + fd; 1460 ANFD *anfd = anfds + fd;
881 1461
882 if (expect_true (!anfd->reify)) 1462 if (expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents); 1463 fd_event_nocheck (EV_A_ fd, revents);
884} 1464}
885 1465
886void 1466void
887ev_feed_fd_event (EV_P_ int fd, int revents) 1467ev_feed_fd_event (EV_P_ int fd, int revents)
888{ 1468{
889 if (fd >= 0 && fd < anfdmax) 1469 if (fd >= 0 && fd < anfdmax)
890 fd_event_nc (EV_A_ fd, revents); 1470 fd_event_nocheck (EV_A_ fd, revents);
891} 1471}
892 1472
893/* make sure the external fd watch events are in-sync */ 1473/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */ 1474/* with the kernel/libev internal state */
895inline_size void 1475inline_size void
896fd_reify (EV_P) 1476fd_reify (EV_P)
897{ 1477{
898 int i; 1478 int i;
899 1479
1480#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1481 for (i = 0; i < fdchangecnt; ++i)
1482 {
1483 int fd = fdchanges [i];
1484 ANFD *anfd = anfds + fd;
1485
1486 if (anfd->reify & EV__IOFDSET && anfd->head)
1487 {
1488 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1489
1490 if (handle != anfd->handle)
1491 {
1492 unsigned long arg;
1493
1494 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1495
1496 /* handle changed, but fd didn't - we need to do it in two steps */
1497 backend_modify (EV_A_ fd, anfd->events, 0);
1498 anfd->events = 0;
1499 anfd->handle = handle;
1500 }
1501 }
1502 }
1503#endif
1504
900 for (i = 0; i < fdchangecnt; ++i) 1505 for (i = 0; i < fdchangecnt; ++i)
901 { 1506 {
902 int fd = fdchanges [i]; 1507 int fd = fdchanges [i];
903 ANFD *anfd = anfds + fd; 1508 ANFD *anfd = anfds + fd;
904 ev_io *w; 1509 ev_io *w;
905 1510
906 unsigned char events = 0; 1511 unsigned char o_events = anfd->events;
1512 unsigned char o_reify = anfd->reify;
907 1513
908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1514 anfd->reify = 0;
909 events |= (unsigned char)w->events;
910 1515
911#if EV_SELECT_IS_WINSOCKET 1516 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
912 if (events)
913 { 1517 {
914 unsigned long arg; 1518 anfd->events = 0;
915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1519
916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1520 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1521 anfd->events |= (unsigned char)w->events;
1522
1523 if (o_events != anfd->events)
1524 o_reify = EV__IOFDSET; /* actually |= */
917 } 1525 }
918#endif
919 1526
920 { 1527 if (o_reify & EV__IOFDSET)
921 unsigned char o_events = anfd->events;
922 unsigned char o_reify = anfd->reify;
923
924 anfd->reify = 0;
925 anfd->events = events;
926
927 if (o_events != events || o_reify & EV__IOFDSET)
928 backend_modify (EV_A_ fd, o_events, events); 1528 backend_modify (EV_A_ fd, o_events, anfd->events);
929 }
930 } 1529 }
931 1530
932 fdchangecnt = 0; 1531 fdchangecnt = 0;
933} 1532}
934 1533
… …
946 fdchanges [fdchangecnt - 1] = fd; 1545 fdchanges [fdchangecnt - 1] = fd;
947 } 1546 }
948} 1547}
949 1548
950/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1549/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
951inline_speed void 1550inline_speed void ecb_cold
952fd_kill (EV_P_ int fd) 1551fd_kill (EV_P_ int fd)
953{ 1552{
954 ev_io *w; 1553 ev_io *w;
955 1554
956 while ((w = (ev_io *)anfds [fd].head)) 1555 while ((w = (ev_io *)anfds [fd].head))
… …
958 ev_io_stop (EV_A_ w); 1557 ev_io_stop (EV_A_ w);
959 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1558 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
960 } 1559 }
961} 1560}
962 1561
963/* check whether the given fd is atcually valid, for error recovery */ 1562/* check whether the given fd is actually valid, for error recovery */
964inline_size int 1563inline_size int ecb_cold
965fd_valid (int fd) 1564fd_valid (int fd)
966{ 1565{
967#ifdef _WIN32 1566#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 1567 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 1568#else
970 return fcntl (fd, F_GETFD) != -1; 1569 return fcntl (fd, F_GETFD) != -1;
971#endif 1570#endif
972} 1571}
973 1572
974/* called on EBADF to verify fds */ 1573/* called on EBADF to verify fds */
975static void noinline 1574static void noinline ecb_cold
976fd_ebadf (EV_P) 1575fd_ebadf (EV_P)
977{ 1576{
978 int fd; 1577 int fd;
979 1578
980 for (fd = 0; fd < anfdmax; ++fd) 1579 for (fd = 0; fd < anfdmax; ++fd)
… …
982 if (!fd_valid (fd) && errno == EBADF) 1581 if (!fd_valid (fd) && errno == EBADF)
983 fd_kill (EV_A_ fd); 1582 fd_kill (EV_A_ fd);
984} 1583}
985 1584
986/* called on ENOMEM in select/poll to kill some fds and retry */ 1585/* called on ENOMEM in select/poll to kill some fds and retry */
987static void noinline 1586static void noinline ecb_cold
988fd_enomem (EV_P) 1587fd_enomem (EV_P)
989{ 1588{
990 int fd; 1589 int fd;
991 1590
992 for (fd = anfdmax; fd--; ) 1591 for (fd = anfdmax; fd--; )
… …
1010 anfds [fd].emask = 0; 1609 anfds [fd].emask = 0;
1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1610 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1012 } 1611 }
1013} 1612}
1014 1613
1614/* used to prepare libev internal fd's */
1615/* this is not fork-safe */
1616inline_speed void
1617fd_intern (int fd)
1618{
1619#ifdef _WIN32
1620 unsigned long arg = 1;
1621 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1622#else
1623 fcntl (fd, F_SETFD, FD_CLOEXEC);
1624 fcntl (fd, F_SETFL, O_NONBLOCK);
1625#endif
1626}
1627
1015/*****************************************************************************/ 1628/*****************************************************************************/
1016 1629
1017/* 1630/*
1018 * the heap functions want a real array index. array index 0 uis guaranteed to not 1631 * the heap functions want a real array index. array index 0 is guaranteed to not
1019 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1632 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1020 * the branching factor of the d-tree. 1633 * the branching factor of the d-tree.
1021 */ 1634 */
1022 1635
1023/* 1636/*
… …
1171 1784
1172static ANSIG signals [EV_NSIG - 1]; 1785static ANSIG signals [EV_NSIG - 1];
1173 1786
1174/*****************************************************************************/ 1787/*****************************************************************************/
1175 1788
1176/* used to prepare libev internal fd's */ 1789#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1177/* this is not fork-safe */
1178inline_speed void
1179fd_intern (int fd)
1180{
1181#ifdef _WIN32
1182 unsigned long arg = 1;
1183 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1184#else
1185 fcntl (fd, F_SETFD, FD_CLOEXEC);
1186 fcntl (fd, F_SETFL, O_NONBLOCK);
1187#endif
1188}
1189 1790
1190static void noinline 1791static void noinline ecb_cold
1191evpipe_init (EV_P) 1792evpipe_init (EV_P)
1192{ 1793{
1193 if (!ev_is_active (&pipe_w)) 1794 if (!ev_is_active (&pipe_w))
1194 { 1795 {
1195#if EV_USE_EVENTFD 1796# if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1797 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1197 if (evfd < 0 && errno == EINVAL) 1798 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0); 1799 evfd = eventfd (0, 0);
1199 1800
1200 if (evfd >= 0) 1801 if (evfd >= 0)
… …
1202 evpipe [0] = -1; 1803 evpipe [0] = -1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */ 1804 fd_intern (evfd); /* doing it twice doesn't hurt */
1204 ev_io_set (&pipe_w, evfd, EV_READ); 1805 ev_io_set (&pipe_w, evfd, EV_READ);
1205 } 1806 }
1206 else 1807 else
1207#endif 1808# endif
1208 { 1809 {
1209 while (pipe (evpipe)) 1810 while (pipe (evpipe))
1210 ev_syserr ("(libev) error creating signal/async pipe"); 1811 ev_syserr ("(libev) error creating signal/async pipe");
1211 1812
1212 fd_intern (evpipe [0]); 1813 fd_intern (evpipe [0]);
… …
1217 ev_io_start (EV_A_ &pipe_w); 1818 ev_io_start (EV_A_ &pipe_w);
1218 ev_unref (EV_A); /* watcher should not keep loop alive */ 1819 ev_unref (EV_A); /* watcher should not keep loop alive */
1219 } 1820 }
1220} 1821}
1221 1822
1222inline_size void 1823inline_speed void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1824evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{ 1825{
1225 if (!*flag) 1826 if (expect_true (*flag))
1827 return;
1828
1829 *flag = 1;
1830
1831 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1832
1833 pipe_write_skipped = 1;
1834
1835 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1836
1837 if (pipe_write_wanted)
1226 { 1838 {
1839 int old_errno;
1840
1841 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1842
1227 int old_errno = errno; /* save errno because write might clobber it */ 1843 old_errno = errno; /* save errno because write will clobber it */
1228
1229 *flag = 1;
1230 1844
1231#if EV_USE_EVENTFD 1845#if EV_USE_EVENTFD
1232 if (evfd >= 0) 1846 if (evfd >= 0)
1233 { 1847 {
1234 uint64_t counter = 1; 1848 uint64_t counter = 1;
1235 write (evfd, &counter, sizeof (uint64_t)); 1849 write (evfd, &counter, sizeof (uint64_t));
1236 } 1850 }
1237 else 1851 else
1238#endif 1852#endif
1853 {
1854 /* win32 people keep sending patches that change this write() to send() */
1855 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1856 /* so when you think this write should be a send instead, please find out */
1857 /* where your send() is from - it's definitely not the microsoft send, and */
1858 /* tell me. thank you. */
1239 write (evpipe [1], &old_errno, 1); 1859 write (evpipe [1], &(evpipe [1]), 1);
1860 }
1240 1861
1241 errno = old_errno; 1862 errno = old_errno;
1242 } 1863 }
1243} 1864}
1244 1865
… …
1247static void 1868static void
1248pipecb (EV_P_ ev_io *iow, int revents) 1869pipecb (EV_P_ ev_io *iow, int revents)
1249{ 1870{
1250 int i; 1871 int i;
1251 1872
1873 if (revents & EV_READ)
1874 {
1252#if EV_USE_EVENTFD 1875#if EV_USE_EVENTFD
1253 if (evfd >= 0) 1876 if (evfd >= 0)
1254 { 1877 {
1255 uint64_t counter; 1878 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t)); 1879 read (evfd, &counter, sizeof (uint64_t));
1257 } 1880 }
1258 else 1881 else
1259#endif 1882#endif
1260 { 1883 {
1261 char dummy; 1884 char dummy;
1885 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1262 read (evpipe [0], &dummy, 1); 1886 read (evpipe [0], &dummy, 1);
1887 }
1263 } 1888 }
1264 1889
1890 pipe_write_skipped = 0;
1891
1892#if EV_SIGNAL_ENABLE
1265 if (sig_pending) 1893 if (sig_pending)
1266 { 1894 {
1267 sig_pending = 0; 1895 sig_pending = 0;
1268 1896
1269 for (i = EV_NSIG - 1; i--; ) 1897 for (i = EV_NSIG - 1; i--; )
1270 if (expect_false (signals [i].pending)) 1898 if (expect_false (signals [i].pending))
1271 ev_feed_signal_event (EV_A_ i + 1); 1899 ev_feed_signal_event (EV_A_ i + 1);
1272 } 1900 }
1901#endif
1273 1902
1274#if EV_ASYNC_ENABLE 1903#if EV_ASYNC_ENABLE
1275 if (async_pending) 1904 if (async_pending)
1276 { 1905 {
1277 async_pending = 0; 1906 async_pending = 0;
… …
1286#endif 1915#endif
1287} 1916}
1288 1917
1289/*****************************************************************************/ 1918/*****************************************************************************/
1290 1919
1920void
1921ev_feed_signal (int signum)
1922{
1923#if EV_MULTIPLICITY
1924 EV_P = signals [signum - 1].loop;
1925
1926 if (!EV_A)
1927 return;
1928#endif
1929
1930 if (!ev_active (&pipe_w))
1931 return;
1932
1933 signals [signum - 1].pending = 1;
1934 evpipe_write (EV_A_ &sig_pending);
1935}
1936
1291static void 1937static void
1292ev_sighandler (int signum) 1938ev_sighandler (int signum)
1293{ 1939{
1294#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop;
1296#endif
1297
1298#if _WIN32 1940#ifdef _WIN32
1299 signal (signum, ev_sighandler); 1941 signal (signum, ev_sighandler);
1300#endif 1942#endif
1301 1943
1302 signals [signum - 1].pending = 1; 1944 ev_feed_signal (signum);
1303 evpipe_write (EV_A_ &sig_pending);
1304} 1945}
1305 1946
1306void noinline 1947void noinline
1307ev_feed_signal_event (EV_P_ int signum) 1948ev_feed_signal_event (EV_P_ int signum)
1308{ 1949{
… …
1345 break; 1986 break;
1346 } 1987 }
1347} 1988}
1348#endif 1989#endif
1349 1990
1991#endif
1992
1350/*****************************************************************************/ 1993/*****************************************************************************/
1351 1994
1995#if EV_CHILD_ENABLE
1352static WL childs [EV_PID_HASHSIZE]; 1996static WL childs [EV_PID_HASHSIZE];
1353
1354#ifndef _WIN32
1355 1997
1356static ev_signal childev; 1998static ev_signal childev;
1357 1999
1358#ifndef WIFCONTINUED 2000#ifndef WIFCONTINUED
1359# define WIFCONTINUED(status) 0 2001# define WIFCONTINUED(status) 0
… …
1364child_reap (EV_P_ int chain, int pid, int status) 2006child_reap (EV_P_ int chain, int pid, int status)
1365{ 2007{
1366 ev_child *w; 2008 ev_child *w;
1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2009 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1368 2010
1369 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2011 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1370 { 2012 {
1371 if ((w->pid == pid || !w->pid) 2013 if ((w->pid == pid || !w->pid)
1372 && (!traced || (w->flags & 1))) 2014 && (!traced || (w->flags & 1)))
1373 { 2015 {
1374 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2016 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1399 /* make sure we are called again until all children have been reaped */ 2041 /* make sure we are called again until all children have been reaped */
1400 /* we need to do it this way so that the callback gets called before we continue */ 2042 /* we need to do it this way so that the callback gets called before we continue */
1401 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2043 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1402 2044
1403 child_reap (EV_A_ pid, pid, status); 2045 child_reap (EV_A_ pid, pid, status);
1404 if (EV_PID_HASHSIZE > 1) 2046 if ((EV_PID_HASHSIZE) > 1)
1405 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2047 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1406} 2048}
1407 2049
1408#endif 2050#endif
1409 2051
1410/*****************************************************************************/ 2052/*****************************************************************************/
1411 2053
2054#if EV_USE_IOCP
2055# include "ev_iocp.c"
2056#endif
1412#if EV_USE_PORT 2057#if EV_USE_PORT
1413# include "ev_port.c" 2058# include "ev_port.c"
1414#endif 2059#endif
1415#if EV_USE_KQUEUE 2060#if EV_USE_KQUEUE
1416# include "ev_kqueue.c" 2061# include "ev_kqueue.c"
… …
1423#endif 2068#endif
1424#if EV_USE_SELECT 2069#if EV_USE_SELECT
1425# include "ev_select.c" 2070# include "ev_select.c"
1426#endif 2071#endif
1427 2072
1428int 2073int ecb_cold
1429ev_version_major (void) 2074ev_version_major (void)
1430{ 2075{
1431 return EV_VERSION_MAJOR; 2076 return EV_VERSION_MAJOR;
1432} 2077}
1433 2078
1434int 2079int ecb_cold
1435ev_version_minor (void) 2080ev_version_minor (void)
1436{ 2081{
1437 return EV_VERSION_MINOR; 2082 return EV_VERSION_MINOR;
1438} 2083}
1439 2084
1440/* return true if we are running with elevated privileges and should ignore env variables */ 2085/* return true if we are running with elevated privileges and should ignore env variables */
1441int inline_size 2086int inline_size ecb_cold
1442enable_secure (void) 2087enable_secure (void)
1443{ 2088{
1444#ifdef _WIN32 2089#ifdef _WIN32
1445 return 0; 2090 return 0;
1446#else 2091#else
1447 return getuid () != geteuid () 2092 return getuid () != geteuid ()
1448 || getgid () != getegid (); 2093 || getgid () != getegid ();
1449#endif 2094#endif
1450} 2095}
1451 2096
1452unsigned int 2097unsigned int ecb_cold
1453ev_supported_backends (void) 2098ev_supported_backends (void)
1454{ 2099{
1455 unsigned int flags = 0; 2100 unsigned int flags = 0;
1456 2101
1457 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2102 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1461 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2106 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1462 2107
1463 return flags; 2108 return flags;
1464} 2109}
1465 2110
1466unsigned int 2111unsigned int ecb_cold
1467ev_recommended_backends (void) 2112ev_recommended_backends (void)
1468{ 2113{
1469 unsigned int flags = ev_supported_backends (); 2114 unsigned int flags = ev_supported_backends ();
1470 2115
1471#ifndef __NetBSD__ 2116#ifndef __NetBSD__
… …
1476#ifdef __APPLE__ 2121#ifdef __APPLE__
1477 /* only select works correctly on that "unix-certified" platform */ 2122 /* only select works correctly on that "unix-certified" platform */
1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2123 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2124 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1480#endif 2125#endif
2126#ifdef __FreeBSD__
2127 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2128#endif
1481 2129
1482 return flags; 2130 return flags;
1483} 2131}
1484 2132
1485unsigned int 2133unsigned int ecb_cold
1486ev_embeddable_backends (void) 2134ev_embeddable_backends (void)
1487{ 2135{
1488 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2136 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1489 2137
1490 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2138 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1491 /* please fix it and tell me how to detect the fix */ 2139 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1492 flags &= ~EVBACKEND_EPOLL; 2140 flags &= ~EVBACKEND_EPOLL;
1493 2141
1494 return flags; 2142 return flags;
1495} 2143}
1496 2144
1497unsigned int 2145unsigned int
1498ev_backend (EV_P) 2146ev_backend (EV_P)
1499{ 2147{
1500 return backend; 2148 return backend;
1501} 2149}
1502 2150
1503#if EV_MINIMAL < 2 2151#if EV_FEATURE_API
1504unsigned int 2152unsigned int
1505ev_loop_count (EV_P) 2153ev_iteration (EV_P)
1506{ 2154{
1507 return loop_count; 2155 return loop_count;
1508} 2156}
1509 2157
1510unsigned int 2158unsigned int
1511ev_loop_depth (EV_P) 2159ev_depth (EV_P)
1512{ 2160{
1513 return loop_depth; 2161 return loop_depth;
1514} 2162}
1515 2163
1516void 2164void
… …
1535ev_userdata (EV_P) 2183ev_userdata (EV_P)
1536{ 2184{
1537 return userdata; 2185 return userdata;
1538} 2186}
1539 2187
2188void
1540void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2189ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1541{ 2190{
1542 invoke_cb = invoke_pending_cb; 2191 invoke_cb = invoke_pending_cb;
1543} 2192}
1544 2193
2194void
1545void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2195ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1546{ 2196{
1547 release_cb = release; 2197 release_cb = release;
1548 acquire_cb = acquire; 2198 acquire_cb = acquire;
1549} 2199}
1550#endif 2200#endif
1551 2201
1552/* initialise a loop structure, must be zero-initialised */ 2202/* initialise a loop structure, must be zero-initialised */
1553static void noinline 2203static void noinline ecb_cold
1554loop_init (EV_P_ unsigned int flags) 2204loop_init (EV_P_ unsigned int flags)
1555{ 2205{
1556 if (!backend) 2206 if (!backend)
1557 { 2207 {
2208 origflags = flags;
2209
1558#if EV_USE_REALTIME 2210#if EV_USE_REALTIME
1559 if (!have_realtime) 2211 if (!have_realtime)
1560 { 2212 {
1561 struct timespec ts; 2213 struct timespec ts;
1562 2214
… …
1584 if (!(flags & EVFLAG_NOENV) 2236 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure () 2237 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS")) 2238 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS")); 2239 flags = atoi (getenv ("LIBEV_FLAGS"));
1588 2240
1589 ev_rt_now = ev_time (); 2241 ev_rt_now = ev_time ();
1590 mn_now = get_clock (); 2242 mn_now = get_clock ();
1591 now_floor = mn_now; 2243 now_floor = mn_now;
1592 rtmn_diff = ev_rt_now - mn_now; 2244 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2 2245#if EV_FEATURE_API
1594 invoke_cb = ev_invoke_pending; 2246 invoke_cb = ev_invoke_pending;
1595#endif 2247#endif
1596 2248
1597 io_blocktime = 0.; 2249 io_blocktime = 0.;
1598 timeout_blocktime = 0.; 2250 timeout_blocktime = 0.;
1599 backend = 0; 2251 backend = 0;
1600 backend_fd = -1; 2252 backend_fd = -1;
1601 sig_pending = 0; 2253 sig_pending = 0;
1602#if EV_ASYNC_ENABLE 2254#if EV_ASYNC_ENABLE
1603 async_pending = 0; 2255 async_pending = 0;
1604#endif 2256#endif
2257 pipe_write_skipped = 0;
2258 pipe_write_wanted = 0;
1605#if EV_USE_INOTIFY 2259#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2260 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 2261#endif
1608#if EV_USE_SIGNALFD 2262#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2263 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 2264#endif
1611 2265
1612 if (!(flags & 0x0000ffffU)) 2266 if (!(flags & EVBACKEND_MASK))
1613 flags |= ev_recommended_backends (); 2267 flags |= ev_recommended_backends ();
1614 2268
2269#if EV_USE_IOCP
2270 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2271#endif
1615#if EV_USE_PORT 2272#if EV_USE_PORT
1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2273 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1617#endif 2274#endif
1618#if EV_USE_KQUEUE 2275#if EV_USE_KQUEUE
1619 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2276 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2285 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1629#endif 2286#endif
1630 2287
1631 ev_prepare_init (&pending_w, pendingcb); 2288 ev_prepare_init (&pending_w, pendingcb);
1632 2289
2290#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1633 ev_init (&pipe_w, pipecb); 2291 ev_init (&pipe_w, pipecb);
1634 ev_set_priority (&pipe_w, EV_MAXPRI); 2292 ev_set_priority (&pipe_w, EV_MAXPRI);
2293#endif
1635 } 2294 }
1636} 2295}
1637 2296
1638/* free up a loop structure */ 2297/* free up a loop structure */
1639static void noinline 2298void ecb_cold
1640loop_destroy (EV_P) 2299ev_loop_destroy (EV_P)
1641{ 2300{
1642 int i; 2301 int i;
2302
2303#if EV_MULTIPLICITY
2304 /* mimic free (0) */
2305 if (!EV_A)
2306 return;
2307#endif
2308
2309#if EV_CLEANUP_ENABLE
2310 /* queue cleanup watchers (and execute them) */
2311 if (expect_false (cleanupcnt))
2312 {
2313 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2314 EV_INVOKE_PENDING;
2315 }
2316#endif
2317
2318#if EV_CHILD_ENABLE
2319 if (ev_is_active (&childev))
2320 {
2321 ev_ref (EV_A); /* child watcher */
2322 ev_signal_stop (EV_A_ &childev);
2323 }
2324#endif
1643 2325
1644 if (ev_is_active (&pipe_w)) 2326 if (ev_is_active (&pipe_w))
1645 { 2327 {
1646 /*ev_ref (EV_A);*/ 2328 /*ev_ref (EV_A);*/
1647 /*ev_io_stop (EV_A_ &pipe_w);*/ 2329 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1658 } 2340 }
1659 } 2341 }
1660 2342
1661#if EV_USE_SIGNALFD 2343#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w)) 2344 if (ev_is_active (&sigfd_w))
1663 {
1664 /*ev_ref (EV_A);*/
1665 /*ev_io_stop (EV_A_ &sigfd_w);*/
1666
1667 close (sigfd); 2345 close (sigfd);
1668 }
1669#endif 2346#endif
1670 2347
1671#if EV_USE_INOTIFY 2348#if EV_USE_INOTIFY
1672 if (fs_fd >= 0) 2349 if (fs_fd >= 0)
1673 close (fs_fd); 2350 close (fs_fd);
1674#endif 2351#endif
1675 2352
1676 if (backend_fd >= 0) 2353 if (backend_fd >= 0)
1677 close (backend_fd); 2354 close (backend_fd);
1678 2355
2356#if EV_USE_IOCP
2357 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2358#endif
1679#if EV_USE_PORT 2359#if EV_USE_PORT
1680 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2360 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1681#endif 2361#endif
1682#if EV_USE_KQUEUE 2362#if EV_USE_KQUEUE
1683 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2363 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1710 array_free (periodic, EMPTY); 2390 array_free (periodic, EMPTY);
1711#endif 2391#endif
1712#if EV_FORK_ENABLE 2392#if EV_FORK_ENABLE
1713 array_free (fork, EMPTY); 2393 array_free (fork, EMPTY);
1714#endif 2394#endif
2395#if EV_CLEANUP_ENABLE
2396 array_free (cleanup, EMPTY);
2397#endif
1715 array_free (prepare, EMPTY); 2398 array_free (prepare, EMPTY);
1716 array_free (check, EMPTY); 2399 array_free (check, EMPTY);
1717#if EV_ASYNC_ENABLE 2400#if EV_ASYNC_ENABLE
1718 array_free (async, EMPTY); 2401 array_free (async, EMPTY);
1719#endif 2402#endif
1720 2403
1721 backend = 0; 2404 backend = 0;
2405
2406#if EV_MULTIPLICITY
2407 if (ev_is_default_loop (EV_A))
2408#endif
2409 ev_default_loop_ptr = 0;
2410#if EV_MULTIPLICITY
2411 else
2412 ev_free (EV_A);
2413#endif
1722} 2414}
1723 2415
1724#if EV_USE_INOTIFY 2416#if EV_USE_INOTIFY
1725inline_size void infy_fork (EV_P); 2417inline_size void infy_fork (EV_P);
1726#endif 2418#endif
… …
1741 infy_fork (EV_A); 2433 infy_fork (EV_A);
1742#endif 2434#endif
1743 2435
1744 if (ev_is_active (&pipe_w)) 2436 if (ev_is_active (&pipe_w))
1745 { 2437 {
1746 /* this "locks" the handlers against writing to the pipe */ 2438 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1747 /* while we modify the fd vars */
1748 sig_pending = 1;
1749#if EV_ASYNC_ENABLE
1750 async_pending = 1;
1751#endif
1752 2439
1753 ev_ref (EV_A); 2440 ev_ref (EV_A);
1754 ev_io_stop (EV_A_ &pipe_w); 2441 ev_io_stop (EV_A_ &pipe_w);
1755 2442
1756#if EV_USE_EVENTFD 2443#if EV_USE_EVENTFD
… …
1762 { 2449 {
1763 EV_WIN32_CLOSE_FD (evpipe [0]); 2450 EV_WIN32_CLOSE_FD (evpipe [0]);
1764 EV_WIN32_CLOSE_FD (evpipe [1]); 2451 EV_WIN32_CLOSE_FD (evpipe [1]);
1765 } 2452 }
1766 2453
2454#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1767 evpipe_init (EV_A); 2455 evpipe_init (EV_A);
1768 /* now iterate over everything, in case we missed something */ 2456 /* now iterate over everything, in case we missed something */
1769 pipecb (EV_A_ &pipe_w, EV_READ); 2457 pipecb (EV_A_ &pipe_w, EV_READ);
2458#endif
1770 } 2459 }
1771 2460
1772 postfork = 0; 2461 postfork = 0;
1773} 2462}
1774 2463
1775#if EV_MULTIPLICITY 2464#if EV_MULTIPLICITY
1776 2465
1777struct ev_loop * 2466struct ev_loop * ecb_cold
1778ev_loop_new (unsigned int flags) 2467ev_loop_new (unsigned int flags)
1779{ 2468{
1780 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2469 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1781 2470
1782 memset (EV_A, 0, sizeof (struct ev_loop)); 2471 memset (EV_A, 0, sizeof (struct ev_loop));
1783 loop_init (EV_A_ flags); 2472 loop_init (EV_A_ flags);
1784 2473
1785 if (ev_backend (EV_A)) 2474 if (ev_backend (EV_A))
1786 return EV_A; 2475 return EV_A;
1787 2476
2477 ev_free (EV_A);
1788 return 0; 2478 return 0;
1789} 2479}
1790 2480
1791void
1792ev_loop_destroy (EV_P)
1793{
1794 loop_destroy (EV_A);
1795 ev_free (loop);
1796}
1797
1798void
1799ev_loop_fork (EV_P)
1800{
1801 postfork = 1; /* must be in line with ev_default_fork */
1802}
1803#endif /* multiplicity */ 2481#endif /* multiplicity */
1804 2482
1805#if EV_VERIFY 2483#if EV_VERIFY
1806static void noinline 2484static void noinline ecb_cold
1807verify_watcher (EV_P_ W w) 2485verify_watcher (EV_P_ W w)
1808{ 2486{
1809 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2487 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1810 2488
1811 if (w->pending) 2489 if (w->pending)
1812 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2490 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1813} 2491}
1814 2492
1815static void noinline 2493static void noinline ecb_cold
1816verify_heap (EV_P_ ANHE *heap, int N) 2494verify_heap (EV_P_ ANHE *heap, int N)
1817{ 2495{
1818 int i; 2496 int i;
1819 2497
1820 for (i = HEAP0; i < N + HEAP0; ++i) 2498 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1825 2503
1826 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2504 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1827 } 2505 }
1828} 2506}
1829 2507
1830static void noinline 2508static void noinline ecb_cold
1831array_verify (EV_P_ W *ws, int cnt) 2509array_verify (EV_P_ W *ws, int cnt)
1832{ 2510{
1833 while (cnt--) 2511 while (cnt--)
1834 { 2512 {
1835 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2513 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1836 verify_watcher (EV_A_ ws [cnt]); 2514 verify_watcher (EV_A_ ws [cnt]);
1837 } 2515 }
1838} 2516}
1839#endif 2517#endif
1840 2518
1841#if EV_MINIMAL < 2 2519#if EV_FEATURE_API
1842void 2520void ecb_cold
1843ev_loop_verify (EV_P) 2521ev_verify (EV_P)
1844{ 2522{
1845#if EV_VERIFY 2523#if EV_VERIFY
1846 int i; 2524 int i;
1847 WL w; 2525 WL w;
1848 2526
… …
1882#if EV_FORK_ENABLE 2560#if EV_FORK_ENABLE
1883 assert (forkmax >= forkcnt); 2561 assert (forkmax >= forkcnt);
1884 array_verify (EV_A_ (W *)forks, forkcnt); 2562 array_verify (EV_A_ (W *)forks, forkcnt);
1885#endif 2563#endif
1886 2564
2565#if EV_CLEANUP_ENABLE
2566 assert (cleanupmax >= cleanupcnt);
2567 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2568#endif
2569
1887#if EV_ASYNC_ENABLE 2570#if EV_ASYNC_ENABLE
1888 assert (asyncmax >= asynccnt); 2571 assert (asyncmax >= asynccnt);
1889 array_verify (EV_A_ (W *)asyncs, asynccnt); 2572 array_verify (EV_A_ (W *)asyncs, asynccnt);
1890#endif 2573#endif
1891 2574
2575#if EV_PREPARE_ENABLE
1892 assert (preparemax >= preparecnt); 2576 assert (preparemax >= preparecnt);
1893 array_verify (EV_A_ (W *)prepares, preparecnt); 2577 array_verify (EV_A_ (W *)prepares, preparecnt);
2578#endif
1894 2579
2580#if EV_CHECK_ENABLE
1895 assert (checkmax >= checkcnt); 2581 assert (checkmax >= checkcnt);
1896 array_verify (EV_A_ (W *)checks, checkcnt); 2582 array_verify (EV_A_ (W *)checks, checkcnt);
2583#endif
1897 2584
1898# if 0 2585# if 0
2586#if EV_CHILD_ENABLE
1899 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2587 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1900 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2588 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2589#endif
1901# endif 2590# endif
1902#endif 2591#endif
1903} 2592}
1904#endif 2593#endif
1905 2594
1906#if EV_MULTIPLICITY 2595#if EV_MULTIPLICITY
1907struct ev_loop * 2596struct ev_loop * ecb_cold
1908ev_default_loop_init (unsigned int flags)
1909#else 2597#else
1910int 2598int
2599#endif
1911ev_default_loop (unsigned int flags) 2600ev_default_loop (unsigned int flags)
1912#endif
1913{ 2601{
1914 if (!ev_default_loop_ptr) 2602 if (!ev_default_loop_ptr)
1915 { 2603 {
1916#if EV_MULTIPLICITY 2604#if EV_MULTIPLICITY
1917 EV_P = ev_default_loop_ptr = &default_loop_struct; 2605 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1921 2609
1922 loop_init (EV_A_ flags); 2610 loop_init (EV_A_ flags);
1923 2611
1924 if (ev_backend (EV_A)) 2612 if (ev_backend (EV_A))
1925 { 2613 {
1926#ifndef _WIN32 2614#if EV_CHILD_ENABLE
1927 ev_signal_init (&childev, childcb, SIGCHLD); 2615 ev_signal_init (&childev, childcb, SIGCHLD);
1928 ev_set_priority (&childev, EV_MAXPRI); 2616 ev_set_priority (&childev, EV_MAXPRI);
1929 ev_signal_start (EV_A_ &childev); 2617 ev_signal_start (EV_A_ &childev);
1930 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2618 ev_unref (EV_A); /* child watcher should not keep loop alive */
1931#endif 2619#endif
… …
1936 2624
1937 return ev_default_loop_ptr; 2625 return ev_default_loop_ptr;
1938} 2626}
1939 2627
1940void 2628void
1941ev_default_destroy (void) 2629ev_loop_fork (EV_P)
1942{ 2630{
1943#if EV_MULTIPLICITY
1944 EV_P = ev_default_loop_ptr;
1945#endif
1946
1947 ev_default_loop_ptr = 0;
1948
1949#ifndef _WIN32
1950 ev_ref (EV_A); /* child watcher */
1951 ev_signal_stop (EV_A_ &childev);
1952#endif
1953
1954 loop_destroy (EV_A);
1955}
1956
1957void
1958ev_default_fork (void)
1959{
1960#if EV_MULTIPLICITY
1961 EV_P = ev_default_loop_ptr;
1962#endif
1963
1964 postfork = 1; /* must be in line with ev_loop_fork */ 2631 postfork = 1; /* must be in line with ev_default_fork */
1965} 2632}
1966 2633
1967/*****************************************************************************/ 2634/*****************************************************************************/
1968 2635
1969void 2636void
… …
1991 2658
1992 for (pri = NUMPRI; pri--; ) 2659 for (pri = NUMPRI; pri--; )
1993 while (pendingcnt [pri]) 2660 while (pendingcnt [pri])
1994 { 2661 {
1995 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2662 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1996
1997 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1998 /* ^ this is no longer true, as pending_w could be here */
1999 2663
2000 p->w->pending = 0; 2664 p->w->pending = 0;
2001 EV_CB_INVOKE (p->w, p->events); 2665 EV_CB_INVOKE (p->w, p->events);
2002 EV_FREQUENT_CHECK; 2666 EV_FREQUENT_CHECK;
2003 } 2667 }
… …
2060 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
2061 feed_reverse (EV_A_ (W)w); 2725 feed_reverse (EV_A_ (W)w);
2062 } 2726 }
2063 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2727 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2064 2728
2065 feed_reverse_done (EV_A_ EV_TIMEOUT); 2729 feed_reverse_done (EV_A_ EV_TIMER);
2066 } 2730 }
2067} 2731}
2068 2732
2069#if EV_PERIODIC_ENABLE 2733#if EV_PERIODIC_ENABLE
2734
2735static void noinline
2736periodic_recalc (EV_P_ ev_periodic *w)
2737{
2738 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2739 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2740
2741 /* the above almost always errs on the low side */
2742 while (at <= ev_rt_now)
2743 {
2744 ev_tstamp nat = at + w->interval;
2745
2746 /* when resolution fails us, we use ev_rt_now */
2747 if (expect_false (nat == at))
2748 {
2749 at = ev_rt_now;
2750 break;
2751 }
2752
2753 at = nat;
2754 }
2755
2756 ev_at (w) = at;
2757}
2758
2070/* make periodics pending */ 2759/* make periodics pending */
2071inline_size void 2760inline_size void
2072periodics_reify (EV_P) 2761periodics_reify (EV_P)
2073{ 2762{
2074 EV_FREQUENT_CHECK; 2763 EV_FREQUENT_CHECK;
… …
2093 ANHE_at_cache (periodics [HEAP0]); 2782 ANHE_at_cache (periodics [HEAP0]);
2094 downheap (periodics, periodiccnt, HEAP0); 2783 downheap (periodics, periodiccnt, HEAP0);
2095 } 2784 }
2096 else if (w->interval) 2785 else if (w->interval)
2097 { 2786 {
2098 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2787 periodic_recalc (EV_A_ w);
2099 /* if next trigger time is not sufficiently in the future, put it there */
2100 /* this might happen because of floating point inexactness */
2101 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2102 {
2103 ev_at (w) += w->interval;
2104
2105 /* if interval is unreasonably low we might still have a time in the past */
2106 /* so correct this. this will make the periodic very inexact, but the user */
2107 /* has effectively asked to get triggered more often than possible */
2108 if (ev_at (w) < ev_rt_now)
2109 ev_at (w) = ev_rt_now;
2110 }
2111
2112 ANHE_at_cache (periodics [HEAP0]); 2788 ANHE_at_cache (periodics [HEAP0]);
2113 downheap (periodics, periodiccnt, HEAP0); 2789 downheap (periodics, periodiccnt, HEAP0);
2114 } 2790 }
2115 else 2791 else
2116 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2792 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2123 feed_reverse_done (EV_A_ EV_PERIODIC); 2799 feed_reverse_done (EV_A_ EV_PERIODIC);
2124 } 2800 }
2125} 2801}
2126 2802
2127/* simply recalculate all periodics */ 2803/* simply recalculate all periodics */
2128/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2804/* TODO: maybe ensure that at least one event happens when jumping forward? */
2129static void noinline 2805static void noinline ecb_cold
2130periodics_reschedule (EV_P) 2806periodics_reschedule (EV_P)
2131{ 2807{
2132 int i; 2808 int i;
2133 2809
2134 /* adjust periodics after time jump */ 2810 /* adjust periodics after time jump */
… …
2137 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2813 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2138 2814
2139 if (w->reschedule_cb) 2815 if (w->reschedule_cb)
2140 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2816 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2141 else if (w->interval) 2817 else if (w->interval)
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2818 periodic_recalc (EV_A_ w);
2143 2819
2144 ANHE_at_cache (periodics [i]); 2820 ANHE_at_cache (periodics [i]);
2145 } 2821 }
2146 2822
2147 reheap (periodics, periodiccnt); 2823 reheap (periodics, periodiccnt);
2148} 2824}
2149#endif 2825#endif
2150 2826
2151/* adjust all timers by a given offset */ 2827/* adjust all timers by a given offset */
2152static void noinline 2828static void noinline ecb_cold
2153timers_reschedule (EV_P_ ev_tstamp adjust) 2829timers_reschedule (EV_P_ ev_tstamp adjust)
2154{ 2830{
2155 int i; 2831 int i;
2156 2832
2157 for (i = 0; i < timercnt; ++i) 2833 for (i = 0; i < timercnt; ++i)
… …
2161 ANHE_at_cache (*he); 2837 ANHE_at_cache (*he);
2162 } 2838 }
2163} 2839}
2164 2840
2165/* fetch new monotonic and realtime times from the kernel */ 2841/* fetch new monotonic and realtime times from the kernel */
2166/* also detetc if there was a timejump, and act accordingly */ 2842/* also detect if there was a timejump, and act accordingly */
2167inline_speed void 2843inline_speed void
2168time_update (EV_P_ ev_tstamp max_block) 2844time_update (EV_P_ ev_tstamp max_block)
2169{ 2845{
2170#if EV_USE_MONOTONIC 2846#if EV_USE_MONOTONIC
2171 if (expect_true (have_monotonic)) 2847 if (expect_true (have_monotonic))
… …
2194 * doesn't hurt either as we only do this on time-jumps or 2870 * doesn't hurt either as we only do this on time-jumps or
2195 * in the unlikely event of having been preempted here. 2871 * in the unlikely event of having been preempted here.
2196 */ 2872 */
2197 for (i = 4; --i; ) 2873 for (i = 4; --i; )
2198 { 2874 {
2875 ev_tstamp diff;
2199 rtmn_diff = ev_rt_now - mn_now; 2876 rtmn_diff = ev_rt_now - mn_now;
2200 2877
2878 diff = odiff - rtmn_diff;
2879
2201 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2880 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2202 return; /* all is well */ 2881 return; /* all is well */
2203 2882
2204 ev_rt_now = ev_time (); 2883 ev_rt_now = ev_time ();
2205 mn_now = get_clock (); 2884 mn_now = get_clock ();
2206 now_floor = mn_now; 2885 now_floor = mn_now;
… …
2229 mn_now = ev_rt_now; 2908 mn_now = ev_rt_now;
2230 } 2909 }
2231} 2910}
2232 2911
2233void 2912void
2234ev_loop (EV_P_ int flags) 2913ev_run (EV_P_ int flags)
2235{ 2914{
2236#if EV_MINIMAL < 2 2915#if EV_FEATURE_API
2237 ++loop_depth; 2916 ++loop_depth;
2238#endif 2917#endif
2239 2918
2240 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2919 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2241 2920
2242 loop_done = EVUNLOOP_CANCEL; 2921 loop_done = EVBREAK_CANCEL;
2243 2922
2244 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2923 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2245 2924
2246 do 2925 do
2247 { 2926 {
2248#if EV_VERIFY >= 2 2927#if EV_VERIFY >= 2
2249 ev_loop_verify (EV_A); 2928 ev_verify (EV_A);
2250#endif 2929#endif
2251 2930
2252#ifndef _WIN32 2931#ifndef _WIN32
2253 if (expect_false (curpid)) /* penalise the forking check even more */ 2932 if (expect_false (curpid)) /* penalise the forking check even more */
2254 if (expect_false (getpid () != curpid)) 2933 if (expect_false (getpid () != curpid))
… …
2266 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2945 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2267 EV_INVOKE_PENDING; 2946 EV_INVOKE_PENDING;
2268 } 2947 }
2269#endif 2948#endif
2270 2949
2950#if EV_PREPARE_ENABLE
2271 /* queue prepare watchers (and execute them) */ 2951 /* queue prepare watchers (and execute them) */
2272 if (expect_false (preparecnt)) 2952 if (expect_false (preparecnt))
2273 { 2953 {
2274 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2954 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2275 EV_INVOKE_PENDING; 2955 EV_INVOKE_PENDING;
2276 } 2956 }
2957#endif
2277 2958
2278 if (expect_false (loop_done)) 2959 if (expect_false (loop_done))
2279 break; 2960 break;
2280 2961
2281 /* we might have forked, so reify kernel state if necessary */ 2962 /* we might have forked, so reify kernel state if necessary */
… …
2288 /* calculate blocking time */ 2969 /* calculate blocking time */
2289 { 2970 {
2290 ev_tstamp waittime = 0.; 2971 ev_tstamp waittime = 0.;
2291 ev_tstamp sleeptime = 0.; 2972 ev_tstamp sleeptime = 0.;
2292 2973
2974 /* remember old timestamp for io_blocktime calculation */
2975 ev_tstamp prev_mn_now = mn_now;
2976
2977 /* update time to cancel out callback processing overhead */
2978 time_update (EV_A_ 1e100);
2979
2980 /* from now on, we want a pipe-wake-up */
2981 pipe_write_wanted = 1;
2982
2983 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2984
2293 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2985 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2294 { 2986 {
2295 /* remember old timestamp for io_blocktime calculation */
2296 ev_tstamp prev_mn_now = mn_now;
2297
2298 /* update time to cancel out callback processing overhead */
2299 time_update (EV_A_ 1e100);
2300
2301 waittime = MAX_BLOCKTIME; 2987 waittime = MAX_BLOCKTIME;
2302 2988
2303 if (timercnt) 2989 if (timercnt)
2304 { 2990 {
2305 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2306 if (waittime > to) waittime = to; 2992 if (waittime > to) waittime = to;
2307 } 2993 }
2308 2994
2309#if EV_PERIODIC_ENABLE 2995#if EV_PERIODIC_ENABLE
2310 if (periodiccnt) 2996 if (periodiccnt)
2311 { 2997 {
2312 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2313 if (waittime > to) waittime = to; 2999 if (waittime > to) waittime = to;
2314 } 3000 }
2315#endif 3001#endif
2316 3002
2317 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3003 /* don't let timeouts decrease the waittime below timeout_blocktime */
2318 if (expect_false (waittime < timeout_blocktime)) 3004 if (expect_false (waittime < timeout_blocktime))
2319 waittime = timeout_blocktime; 3005 waittime = timeout_blocktime;
3006
3007 /* at this point, we NEED to wait, so we have to ensure */
3008 /* to pass a minimum nonzero value to the backend */
3009 if (expect_false (waittime < backend_mintime))
3010 waittime = backend_mintime;
2320 3011
2321 /* extra check because io_blocktime is commonly 0 */ 3012 /* extra check because io_blocktime is commonly 0 */
2322 if (expect_false (io_blocktime)) 3013 if (expect_false (io_blocktime))
2323 { 3014 {
2324 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3015 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2325 3016
2326 if (sleeptime > waittime - backend_fudge) 3017 if (sleeptime > waittime - backend_mintime)
2327 sleeptime = waittime - backend_fudge; 3018 sleeptime = waittime - backend_mintime;
2328 3019
2329 if (expect_true (sleeptime > 0.)) 3020 if (expect_true (sleeptime > 0.))
2330 { 3021 {
2331 ev_sleep (sleeptime); 3022 ev_sleep (sleeptime);
2332 waittime -= sleeptime; 3023 waittime -= sleeptime;
2333 } 3024 }
2334 } 3025 }
2335 } 3026 }
2336 3027
2337#if EV_MINIMAL < 2 3028#if EV_FEATURE_API
2338 ++loop_count; 3029 ++loop_count;
2339#endif 3030#endif
2340 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3031 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2341 backend_poll (EV_A_ waittime); 3032 backend_poll (EV_A_ waittime);
2342 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3033 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3034
3035 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3036
3037 if (pipe_write_skipped)
3038 {
3039 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3040 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3041 }
3042
2343 3043
2344 /* update ev_rt_now, do magic */ 3044 /* update ev_rt_now, do magic */
2345 time_update (EV_A_ waittime + sleeptime); 3045 time_update (EV_A_ waittime + sleeptime);
2346 } 3046 }
2347 3047
… …
2354#if EV_IDLE_ENABLE 3054#if EV_IDLE_ENABLE
2355 /* queue idle watchers unless other events are pending */ 3055 /* queue idle watchers unless other events are pending */
2356 idle_reify (EV_A); 3056 idle_reify (EV_A);
2357#endif 3057#endif
2358 3058
3059#if EV_CHECK_ENABLE
2359 /* queue check watchers, to be executed first */ 3060 /* queue check watchers, to be executed first */
2360 if (expect_false (checkcnt)) 3061 if (expect_false (checkcnt))
2361 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3062 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3063#endif
2362 3064
2363 EV_INVOKE_PENDING; 3065 EV_INVOKE_PENDING;
2364 } 3066 }
2365 while (expect_true ( 3067 while (expect_true (
2366 activecnt 3068 activecnt
2367 && !loop_done 3069 && !loop_done
2368 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3070 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2369 )); 3071 ));
2370 3072
2371 if (loop_done == EVUNLOOP_ONE) 3073 if (loop_done == EVBREAK_ONE)
2372 loop_done = EVUNLOOP_CANCEL; 3074 loop_done = EVBREAK_CANCEL;
2373 3075
2374#if EV_MINIMAL < 2 3076#if EV_FEATURE_API
2375 --loop_depth; 3077 --loop_depth;
2376#endif 3078#endif
2377} 3079}
2378 3080
2379void 3081void
2380ev_unloop (EV_P_ int how) 3082ev_break (EV_P_ int how)
2381{ 3083{
2382 loop_done = how; 3084 loop_done = how;
2383} 3085}
2384 3086
2385void 3087void
… …
2505 3207
2506 if (expect_false (ev_is_active (w))) 3208 if (expect_false (ev_is_active (w)))
2507 return; 3209 return;
2508 3210
2509 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3211 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2510 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3212 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2511 3213
2512 EV_FREQUENT_CHECK; 3214 EV_FREQUENT_CHECK;
2513 3215
2514 ev_start (EV_A_ (W)w, 1); 3216 ev_start (EV_A_ (W)w, 1);
2515 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3217 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2533 EV_FREQUENT_CHECK; 3235 EV_FREQUENT_CHECK;
2534 3236
2535 wlist_del (&anfds[w->fd].head, (WL)w); 3237 wlist_del (&anfds[w->fd].head, (WL)w);
2536 ev_stop (EV_A_ (W)w); 3238 ev_stop (EV_A_ (W)w);
2537 3239
2538 fd_change (EV_A_ w->fd, 1); 3240 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2539 3241
2540 EV_FREQUENT_CHECK; 3242 EV_FREQUENT_CHECK;
2541} 3243}
2542 3244
2543void noinline 3245void noinline
… …
2585 timers [active] = timers [timercnt + HEAP0]; 3287 timers [active] = timers [timercnt + HEAP0];
2586 adjustheap (timers, timercnt, active); 3288 adjustheap (timers, timercnt, active);
2587 } 3289 }
2588 } 3290 }
2589 3291
2590 EV_FREQUENT_CHECK;
2591
2592 ev_at (w) -= mn_now; 3292 ev_at (w) -= mn_now;
2593 3293
2594 ev_stop (EV_A_ (W)w); 3294 ev_stop (EV_A_ (W)w);
3295
3296 EV_FREQUENT_CHECK;
2595} 3297}
2596 3298
2597void noinline 3299void noinline
2598ev_timer_again (EV_P_ ev_timer *w) 3300ev_timer_again (EV_P_ ev_timer *w)
2599{ 3301{
2600 EV_FREQUENT_CHECK; 3302 EV_FREQUENT_CHECK;
3303
3304 clear_pending (EV_A_ w);
2601 3305
2602 if (ev_is_active (w)) 3306 if (ev_is_active (w))
2603 { 3307 {
2604 if (w->repeat) 3308 if (w->repeat)
2605 { 3309 {
… …
2635 if (w->reschedule_cb) 3339 if (w->reschedule_cb)
2636 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3340 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2637 else if (w->interval) 3341 else if (w->interval)
2638 { 3342 {
2639 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3343 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2640 /* this formula differs from the one in periodic_reify because we do not always round up */ 3344 periodic_recalc (EV_A_ w);
2641 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2642 } 3345 }
2643 else 3346 else
2644 ev_at (w) = w->offset; 3347 ev_at (w) = w->offset;
2645 3348
2646 EV_FREQUENT_CHECK; 3349 EV_FREQUENT_CHECK;
… …
2678 periodics [active] = periodics [periodiccnt + HEAP0]; 3381 periodics [active] = periodics [periodiccnt + HEAP0];
2679 adjustheap (periodics, periodiccnt, active); 3382 adjustheap (periodics, periodiccnt, active);
2680 } 3383 }
2681 } 3384 }
2682 3385
2683 EV_FREQUENT_CHECK;
2684
2685 ev_stop (EV_A_ (W)w); 3386 ev_stop (EV_A_ (W)w);
3387
3388 EV_FREQUENT_CHECK;
2686} 3389}
2687 3390
2688void noinline 3391void noinline
2689ev_periodic_again (EV_P_ ev_periodic *w) 3392ev_periodic_again (EV_P_ ev_periodic *w)
2690{ 3393{
… …
2695#endif 3398#endif
2696 3399
2697#ifndef SA_RESTART 3400#ifndef SA_RESTART
2698# define SA_RESTART 0 3401# define SA_RESTART 0
2699#endif 3402#endif
3403
3404#if EV_SIGNAL_ENABLE
2700 3405
2701void noinline 3406void noinline
2702ev_signal_start (EV_P_ ev_signal *w) 3407ev_signal_start (EV_P_ ev_signal *w)
2703{ 3408{
2704 if (expect_false (ev_is_active (w))) 3409 if (expect_false (ev_is_active (w)))
… …
2751 if (!((WL)w)->next) 3456 if (!((WL)w)->next)
2752# if EV_USE_SIGNALFD 3457# if EV_USE_SIGNALFD
2753 if (sigfd < 0) /*TODO*/ 3458 if (sigfd < 0) /*TODO*/
2754# endif 3459# endif
2755 { 3460 {
2756# if _WIN32 3461# ifdef _WIN32
3462 evpipe_init (EV_A);
3463
2757 signal (w->signum, ev_sighandler); 3464 signal (w->signum, ev_sighandler);
2758# else 3465# else
2759 struct sigaction sa; 3466 struct sigaction sa;
2760 3467
2761 evpipe_init (EV_A); 3468 evpipe_init (EV_A);
… …
2763 sa.sa_handler = ev_sighandler; 3470 sa.sa_handler = ev_sighandler;
2764 sigfillset (&sa.sa_mask); 3471 sigfillset (&sa.sa_mask);
2765 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3472 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2766 sigaction (w->signum, &sa, 0); 3473 sigaction (w->signum, &sa, 0);
2767 3474
3475 if (origflags & EVFLAG_NOSIGMASK)
3476 {
2768 sigemptyset (&sa.sa_mask); 3477 sigemptyset (&sa.sa_mask);
2769 sigaddset (&sa.sa_mask, w->signum); 3478 sigaddset (&sa.sa_mask, w->signum);
2770 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3479 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3480 }
2771#endif 3481#endif
2772 } 3482 }
2773 3483
2774 EV_FREQUENT_CHECK; 3484 EV_FREQUENT_CHECK;
2775} 3485}
… …
2792 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3502 signals [w->signum - 1].loop = 0; /* unattach from signal */
2793#endif 3503#endif
2794#if EV_USE_SIGNALFD 3504#if EV_USE_SIGNALFD
2795 if (sigfd >= 0) 3505 if (sigfd >= 0)
2796 { 3506 {
2797 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3507 sigset_t ss;
3508
3509 sigemptyset (&ss);
3510 sigaddset (&ss, w->signum);
2798 sigdelset (&sigfd_set, w->signum); 3511 sigdelset (&sigfd_set, w->signum);
3512
2799 signalfd (sigfd, &sigfd_set, 0); 3513 signalfd (sigfd, &sigfd_set, 0);
2800 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3514 sigprocmask (SIG_UNBLOCK, &ss, 0);
2801 /*TODO: maybe unblock signal? */
2802 } 3515 }
2803 else 3516 else
2804#endif 3517#endif
2805 signal (w->signum, SIG_DFL); 3518 signal (w->signum, SIG_DFL);
2806 } 3519 }
2807 3520
2808 EV_FREQUENT_CHECK; 3521 EV_FREQUENT_CHECK;
2809} 3522}
2810 3523
3524#endif
3525
3526#if EV_CHILD_ENABLE
3527
2811void 3528void
2812ev_child_start (EV_P_ ev_child *w) 3529ev_child_start (EV_P_ ev_child *w)
2813{ 3530{
2814#if EV_MULTIPLICITY 3531#if EV_MULTIPLICITY
2815 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
… …
2818 return; 3535 return;
2819 3536
2820 EV_FREQUENT_CHECK; 3537 EV_FREQUENT_CHECK;
2821 3538
2822 ev_start (EV_A_ (W)w, 1); 3539 ev_start (EV_A_ (W)w, 1);
2823 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3540 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2824 3541
2825 EV_FREQUENT_CHECK; 3542 EV_FREQUENT_CHECK;
2826} 3543}
2827 3544
2828void 3545void
… …
2832 if (expect_false (!ev_is_active (w))) 3549 if (expect_false (!ev_is_active (w)))
2833 return; 3550 return;
2834 3551
2835 EV_FREQUENT_CHECK; 3552 EV_FREQUENT_CHECK;
2836 3553
2837 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3554 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2838 ev_stop (EV_A_ (W)w); 3555 ev_stop (EV_A_ (W)w);
2839 3556
2840 EV_FREQUENT_CHECK; 3557 EV_FREQUENT_CHECK;
2841} 3558}
3559
3560#endif
2842 3561
2843#if EV_STAT_ENABLE 3562#if EV_STAT_ENABLE
2844 3563
2845# ifdef _WIN32 3564# ifdef _WIN32
2846# undef lstat 3565# undef lstat
… …
2852#define MIN_STAT_INTERVAL 0.1074891 3571#define MIN_STAT_INTERVAL 0.1074891
2853 3572
2854static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3573static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2855 3574
2856#if EV_USE_INOTIFY 3575#if EV_USE_INOTIFY
2857# define EV_INOTIFY_BUFSIZE 8192 3576
3577/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3578# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2858 3579
2859static void noinline 3580static void noinline
2860infy_add (EV_P_ ev_stat *w) 3581infy_add (EV_P_ ev_stat *w)
2861{ 3582{
2862 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); 3583 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);
2863 3584
2864 if (w->wd < 0) 3585 if (w->wd >= 0)
3586 {
3587 struct statfs sfs;
3588
3589 /* now local changes will be tracked by inotify, but remote changes won't */
3590 /* unless the filesystem is known to be local, we therefore still poll */
3591 /* also do poll on <2.6.25, but with normal frequency */
3592
3593 if (!fs_2625)
3594 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3595 else if (!statfs (w->path, &sfs)
3596 && (sfs.f_type == 0x1373 /* devfs */
3597 || sfs.f_type == 0xEF53 /* ext2/3 */
3598 || sfs.f_type == 0x3153464a /* jfs */
3599 || sfs.f_type == 0x52654973 /* reiser3 */
3600 || sfs.f_type == 0x01021994 /* tempfs */
3601 || sfs.f_type == 0x58465342 /* xfs */))
3602 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3603 else
3604 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2865 { 3605 }
3606 else
3607 {
3608 /* can't use inotify, continue to stat */
2866 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3609 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2867 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2868 3610
2869 /* monitor some parent directory for speedup hints */ 3611 /* if path is not there, monitor some parent directory for speedup hints */
2870 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3612 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2871 /* but an efficiency issue only */ 3613 /* but an efficiency issue only */
2872 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3614 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2873 { 3615 {
2874 char path [4096]; 3616 char path [4096];
… …
2884 if (!pend || pend == path) 3626 if (!pend || pend == path)
2885 break; 3627 break;
2886 3628
2887 *pend = 0; 3629 *pend = 0;
2888 w->wd = inotify_add_watch (fs_fd, path, mask); 3630 w->wd = inotify_add_watch (fs_fd, path, mask);
2889 } 3631 }
2890 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3632 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2891 } 3633 }
2892 } 3634 }
2893 3635
2894 if (w->wd >= 0) 3636 if (w->wd >= 0)
2895 {
2896 struct statfs sfs;
2897
2898 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3637 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2899 3638
2900 /* now local changes will be tracked by inotify, but remote changes won't */ 3639 /* now re-arm timer, if required */
2901 /* unless the filesystem it known to be local, we therefore still poll */ 3640 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2902 /* also do poll on <2.6.25, but with normal frequency */
2903
2904 if (fs_2625 && !statfs (w->path, &sfs))
2905 if (sfs.f_type == 0x1373 /* devfs */
2906 || sfs.f_type == 0xEF53 /* ext2/3 */
2907 || sfs.f_type == 0x3153464a /* jfs */
2908 || sfs.f_type == 0x52654973 /* reiser3 */
2909 || sfs.f_type == 0x01021994 /* tempfs */
2910 || sfs.f_type == 0x58465342 /* xfs */)
2911 return;
2912
2913 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2914 ev_timer_again (EV_A_ &w->timer); 3641 ev_timer_again (EV_A_ &w->timer);
2915 } 3642 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2916} 3643}
2917 3644
2918static void noinline 3645static void noinline
2919infy_del (EV_P_ ev_stat *w) 3646infy_del (EV_P_ ev_stat *w)
2920{ 3647{
… …
2923 3650
2924 if (wd < 0) 3651 if (wd < 0)
2925 return; 3652 return;
2926 3653
2927 w->wd = -2; 3654 w->wd = -2;
2928 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3655 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2929 wlist_del (&fs_hash [slot].head, (WL)w); 3656 wlist_del (&fs_hash [slot].head, (WL)w);
2930 3657
2931 /* remove this watcher, if others are watching it, they will rearm */ 3658 /* remove this watcher, if others are watching it, they will rearm */
2932 inotify_rm_watch (fs_fd, wd); 3659 inotify_rm_watch (fs_fd, wd);
2933} 3660}
… …
2935static void noinline 3662static void noinline
2936infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3663infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2937{ 3664{
2938 if (slot < 0) 3665 if (slot < 0)
2939 /* overflow, need to check for all hash slots */ 3666 /* overflow, need to check for all hash slots */
2940 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3667 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2941 infy_wd (EV_A_ slot, wd, ev); 3668 infy_wd (EV_A_ slot, wd, ev);
2942 else 3669 else
2943 { 3670 {
2944 WL w_; 3671 WL w_;
2945 3672
2946 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3673 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2947 { 3674 {
2948 ev_stat *w = (ev_stat *)w_; 3675 ev_stat *w = (ev_stat *)w_;
2949 w_ = w_->next; /* lets us remove this watcher and all before it */ 3676 w_ = w_->next; /* lets us remove this watcher and all before it */
2950 3677
2951 if (w->wd == wd || wd == -1) 3678 if (w->wd == wd || wd == -1)
2952 { 3679 {
2953 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3680 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2954 { 3681 {
2955 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3682 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2956 w->wd = -1; 3683 w->wd = -1;
2957 infy_add (EV_A_ w); /* re-add, no matter what */ 3684 infy_add (EV_A_ w); /* re-add, no matter what */
2958 } 3685 }
2959 3686
2960 stat_timer_cb (EV_A_ &w->timer, 0); 3687 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2965 3692
2966static void 3693static void
2967infy_cb (EV_P_ ev_io *w, int revents) 3694infy_cb (EV_P_ ev_io *w, int revents)
2968{ 3695{
2969 char buf [EV_INOTIFY_BUFSIZE]; 3696 char buf [EV_INOTIFY_BUFSIZE];
2970 struct inotify_event *ev = (struct inotify_event *)buf;
2971 int ofs; 3697 int ofs;
2972 int len = read (fs_fd, buf, sizeof (buf)); 3698 int len = read (fs_fd, buf, sizeof (buf));
2973 3699
2974 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3700 for (ofs = 0; ofs < len; )
3701 {
3702 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2975 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3703 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3704 ofs += sizeof (struct inotify_event) + ev->len;
3705 }
2976} 3706}
2977 3707
2978inline_size void 3708inline_size void ecb_cold
2979check_2625 (EV_P) 3709ev_check_2625 (EV_P)
2980{ 3710{
2981 /* kernels < 2.6.25 are borked 3711 /* kernels < 2.6.25 are borked
2982 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3712 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2983 */ 3713 */
2984 struct utsname buf; 3714 if (ev_linux_version () < 0x020619)
2985 int major, minor, micro;
2986
2987 if (uname (&buf))
2988 return;
2989
2990 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2991 return;
2992
2993 if (major < 2
2994 || (major == 2 && minor < 6)
2995 || (major == 2 && minor == 6 && micro < 25))
2996 return; 3715 return;
2997 3716
2998 fs_2625 = 1; 3717 fs_2625 = 1;
2999} 3718}
3000 3719
… …
3015 if (fs_fd != -2) 3734 if (fs_fd != -2)
3016 return; 3735 return;
3017 3736
3018 fs_fd = -1; 3737 fs_fd = -1;
3019 3738
3020 check_2625 (EV_A); 3739 ev_check_2625 (EV_A);
3021 3740
3022 fs_fd = infy_newfd (); 3741 fs_fd = infy_newfd ();
3023 3742
3024 if (fs_fd >= 0) 3743 if (fs_fd >= 0)
3025 { 3744 {
3026 fd_intern (fs_fd); 3745 fd_intern (fs_fd);
3027 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3746 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3028 ev_set_priority (&fs_w, EV_MAXPRI); 3747 ev_set_priority (&fs_w, EV_MAXPRI);
3029 ev_io_start (EV_A_ &fs_w); 3748 ev_io_start (EV_A_ &fs_w);
3749 ev_unref (EV_A);
3030 } 3750 }
3031} 3751}
3032 3752
3033inline_size void 3753inline_size void
3034infy_fork (EV_P) 3754infy_fork (EV_P)
… …
3036 int slot; 3756 int slot;
3037 3757
3038 if (fs_fd < 0) 3758 if (fs_fd < 0)
3039 return; 3759 return;
3040 3760
3761 ev_ref (EV_A);
3041 ev_io_stop (EV_A_ &fs_w); 3762 ev_io_stop (EV_A_ &fs_w);
3042 close (fs_fd); 3763 close (fs_fd);
3043 fs_fd = infy_newfd (); 3764 fs_fd = infy_newfd ();
3044 3765
3045 if (fs_fd >= 0) 3766 if (fs_fd >= 0)
3046 { 3767 {
3047 fd_intern (fs_fd); 3768 fd_intern (fs_fd);
3048 ev_io_set (&fs_w, fs_fd, EV_READ); 3769 ev_io_set (&fs_w, fs_fd, EV_READ);
3049 ev_io_start (EV_A_ &fs_w); 3770 ev_io_start (EV_A_ &fs_w);
3771 ev_unref (EV_A);
3050 } 3772 }
3051 3773
3052 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3774 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3053 { 3775 {
3054 WL w_ = fs_hash [slot].head; 3776 WL w_ = fs_hash [slot].head;
3055 fs_hash [slot].head = 0; 3777 fs_hash [slot].head = 0;
3056 3778
3057 while (w_) 3779 while (w_)
… …
3062 w->wd = -1; 3784 w->wd = -1;
3063 3785
3064 if (fs_fd >= 0) 3786 if (fs_fd >= 0)
3065 infy_add (EV_A_ w); /* re-add, no matter what */ 3787 infy_add (EV_A_ w); /* re-add, no matter what */
3066 else 3788 else
3789 {
3790 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3791 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3067 ev_timer_again (EV_A_ &w->timer); 3792 ev_timer_again (EV_A_ &w->timer);
3793 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3794 }
3068 } 3795 }
3069 } 3796 }
3070} 3797}
3071 3798
3072#endif 3799#endif
… …
3089static void noinline 3816static void noinline
3090stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3817stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3091{ 3818{
3092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3819 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3093 3820
3094 /* we copy this here each the time so that */ 3821 ev_statdata prev = w->attr;
3095 /* prev has the old value when the callback gets invoked */
3096 w->prev = w->attr;
3097 ev_stat_stat (EV_A_ w); 3822 ev_stat_stat (EV_A_ w);
3098 3823
3099 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3824 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3100 if ( 3825 if (
3101 w->prev.st_dev != w->attr.st_dev 3826 prev.st_dev != w->attr.st_dev
3102 || w->prev.st_ino != w->attr.st_ino 3827 || prev.st_ino != w->attr.st_ino
3103 || w->prev.st_mode != w->attr.st_mode 3828 || prev.st_mode != w->attr.st_mode
3104 || w->prev.st_nlink != w->attr.st_nlink 3829 || prev.st_nlink != w->attr.st_nlink
3105 || w->prev.st_uid != w->attr.st_uid 3830 || prev.st_uid != w->attr.st_uid
3106 || w->prev.st_gid != w->attr.st_gid 3831 || prev.st_gid != w->attr.st_gid
3107 || w->prev.st_rdev != w->attr.st_rdev 3832 || prev.st_rdev != w->attr.st_rdev
3108 || w->prev.st_size != w->attr.st_size 3833 || prev.st_size != w->attr.st_size
3109 || w->prev.st_atime != w->attr.st_atime 3834 || prev.st_atime != w->attr.st_atime
3110 || w->prev.st_mtime != w->attr.st_mtime 3835 || prev.st_mtime != w->attr.st_mtime
3111 || w->prev.st_ctime != w->attr.st_ctime 3836 || prev.st_ctime != w->attr.st_ctime
3112 ) { 3837 ) {
3838 /* we only update w->prev on actual differences */
3839 /* in case we test more often than invoke the callback, */
3840 /* to ensure that prev is always different to attr */
3841 w->prev = prev;
3842
3113 #if EV_USE_INOTIFY 3843 #if EV_USE_INOTIFY
3114 if (fs_fd >= 0) 3844 if (fs_fd >= 0)
3115 { 3845 {
3116 infy_del (EV_A_ w); 3846 infy_del (EV_A_ w);
3117 infy_add (EV_A_ w); 3847 infy_add (EV_A_ w);
… …
3142 3872
3143 if (fs_fd >= 0) 3873 if (fs_fd >= 0)
3144 infy_add (EV_A_ w); 3874 infy_add (EV_A_ w);
3145 else 3875 else
3146#endif 3876#endif
3877 {
3147 ev_timer_again (EV_A_ &w->timer); 3878 ev_timer_again (EV_A_ &w->timer);
3879 ev_unref (EV_A);
3880 }
3148 3881
3149 ev_start (EV_A_ (W)w, 1); 3882 ev_start (EV_A_ (W)w, 1);
3150 3883
3151 EV_FREQUENT_CHECK; 3884 EV_FREQUENT_CHECK;
3152} 3885}
… …
3161 EV_FREQUENT_CHECK; 3894 EV_FREQUENT_CHECK;
3162 3895
3163#if EV_USE_INOTIFY 3896#if EV_USE_INOTIFY
3164 infy_del (EV_A_ w); 3897 infy_del (EV_A_ w);
3165#endif 3898#endif
3899
3900 if (ev_is_active (&w->timer))
3901 {
3902 ev_ref (EV_A);
3166 ev_timer_stop (EV_A_ &w->timer); 3903 ev_timer_stop (EV_A_ &w->timer);
3904 }
3167 3905
3168 ev_stop (EV_A_ (W)w); 3906 ev_stop (EV_A_ (W)w);
3169 3907
3170 EV_FREQUENT_CHECK; 3908 EV_FREQUENT_CHECK;
3171} 3909}
… …
3216 3954
3217 EV_FREQUENT_CHECK; 3955 EV_FREQUENT_CHECK;
3218} 3956}
3219#endif 3957#endif
3220 3958
3959#if EV_PREPARE_ENABLE
3221void 3960void
3222ev_prepare_start (EV_P_ ev_prepare *w) 3961ev_prepare_start (EV_P_ ev_prepare *w)
3223{ 3962{
3224 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
3225 return; 3964 return;
… …
3251 3990
3252 ev_stop (EV_A_ (W)w); 3991 ev_stop (EV_A_ (W)w);
3253 3992
3254 EV_FREQUENT_CHECK; 3993 EV_FREQUENT_CHECK;
3255} 3994}
3995#endif
3256 3996
3997#if EV_CHECK_ENABLE
3257void 3998void
3258ev_check_start (EV_P_ ev_check *w) 3999ev_check_start (EV_P_ ev_check *w)
3259{ 4000{
3260 if (expect_false (ev_is_active (w))) 4001 if (expect_false (ev_is_active (w)))
3261 return; 4002 return;
… …
3287 4028
3288 ev_stop (EV_A_ (W)w); 4029 ev_stop (EV_A_ (W)w);
3289 4030
3290 EV_FREQUENT_CHECK; 4031 EV_FREQUENT_CHECK;
3291} 4032}
4033#endif
3292 4034
3293#if EV_EMBED_ENABLE 4035#if EV_EMBED_ENABLE
3294void noinline 4036void noinline
3295ev_embed_sweep (EV_P_ ev_embed *w) 4037ev_embed_sweep (EV_P_ ev_embed *w)
3296{ 4038{
3297 ev_loop (w->other, EVLOOP_NONBLOCK); 4039 ev_run (w->other, EVRUN_NOWAIT);
3298} 4040}
3299 4041
3300static void 4042static void
3301embed_io_cb (EV_P_ ev_io *io, int revents) 4043embed_io_cb (EV_P_ ev_io *io, int revents)
3302{ 4044{
3303 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4045 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3304 4046
3305 if (ev_cb (w)) 4047 if (ev_cb (w))
3306 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4048 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3307 else 4049 else
3308 ev_loop (w->other, EVLOOP_NONBLOCK); 4050 ev_run (w->other, EVRUN_NOWAIT);
3309} 4051}
3310 4052
3311static void 4053static void
3312embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4054embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3313{ 4055{
… …
3317 EV_P = w->other; 4059 EV_P = w->other;
3318 4060
3319 while (fdchangecnt) 4061 while (fdchangecnt)
3320 { 4062 {
3321 fd_reify (EV_A); 4063 fd_reify (EV_A);
3322 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4064 ev_run (EV_A_ EVRUN_NOWAIT);
3323 } 4065 }
3324 } 4066 }
3325} 4067}
3326 4068
3327static void 4069static void
… …
3333 4075
3334 { 4076 {
3335 EV_P = w->other; 4077 EV_P = w->other;
3336 4078
3337 ev_loop_fork (EV_A); 4079 ev_loop_fork (EV_A);
3338 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4080 ev_run (EV_A_ EVRUN_NOWAIT);
3339 } 4081 }
3340 4082
3341 ev_embed_start (EV_A_ w); 4083 ev_embed_start (EV_A_ w);
3342} 4084}
3343 4085
… …
3391 4133
3392 ev_io_stop (EV_A_ &w->io); 4134 ev_io_stop (EV_A_ &w->io);
3393 ev_prepare_stop (EV_A_ &w->prepare); 4135 ev_prepare_stop (EV_A_ &w->prepare);
3394 ev_fork_stop (EV_A_ &w->fork); 4136 ev_fork_stop (EV_A_ &w->fork);
3395 4137
4138 ev_stop (EV_A_ (W)w);
4139
3396 EV_FREQUENT_CHECK; 4140 EV_FREQUENT_CHECK;
3397} 4141}
3398#endif 4142#endif
3399 4143
3400#if EV_FORK_ENABLE 4144#if EV_FORK_ENABLE
… …
3433 4177
3434 EV_FREQUENT_CHECK; 4178 EV_FREQUENT_CHECK;
3435} 4179}
3436#endif 4180#endif
3437 4181
4182#if EV_CLEANUP_ENABLE
4183void
4184ev_cleanup_start (EV_P_ ev_cleanup *w)
4185{
4186 if (expect_false (ev_is_active (w)))
4187 return;
4188
4189 EV_FREQUENT_CHECK;
4190
4191 ev_start (EV_A_ (W)w, ++cleanupcnt);
4192 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4193 cleanups [cleanupcnt - 1] = w;
4194
4195 /* cleanup watchers should never keep a refcount on the loop */
4196 ev_unref (EV_A);
4197 EV_FREQUENT_CHECK;
4198}
4199
4200void
4201ev_cleanup_stop (EV_P_ ev_cleanup *w)
4202{
4203 clear_pending (EV_A_ (W)w);
4204 if (expect_false (!ev_is_active (w)))
4205 return;
4206
4207 EV_FREQUENT_CHECK;
4208 ev_ref (EV_A);
4209
4210 {
4211 int active = ev_active (w);
4212
4213 cleanups [active - 1] = cleanups [--cleanupcnt];
4214 ev_active (cleanups [active - 1]) = active;
4215 }
4216
4217 ev_stop (EV_A_ (W)w);
4218
4219 EV_FREQUENT_CHECK;
4220}
4221#endif
4222
3438#if EV_ASYNC_ENABLE 4223#if EV_ASYNC_ENABLE
3439void 4224void
3440ev_async_start (EV_P_ ev_async *w) 4225ev_async_start (EV_P_ ev_async *w)
3441{ 4226{
3442 if (expect_false (ev_is_active (w))) 4227 if (expect_false (ev_is_active (w)))
3443 return; 4228 return;
4229
4230 w->sent = 0;
3444 4231
3445 evpipe_init (EV_A); 4232 evpipe_init (EV_A);
3446 4233
3447 EV_FREQUENT_CHECK; 4234 EV_FREQUENT_CHECK;
3448 4235
… …
3526{ 4313{
3527 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4314 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3528 4315
3529 if (expect_false (!once)) 4316 if (expect_false (!once))
3530 { 4317 {
3531 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4318 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3532 return; 4319 return;
3533 } 4320 }
3534 4321
3535 once->cb = cb; 4322 once->cb = cb;
3536 once->arg = arg; 4323 once->arg = arg;
… …
3551} 4338}
3552 4339
3553/*****************************************************************************/ 4340/*****************************************************************************/
3554 4341
3555#if EV_WALK_ENABLE 4342#if EV_WALK_ENABLE
3556void 4343void ecb_cold
3557ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4344ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3558{ 4345{
3559 int i, j; 4346 int i, j;
3560 ev_watcher_list *wl, *wn; 4347 ev_watcher_list *wl, *wn;
3561 4348
… …
3605 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4392 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3606#endif 4393#endif
3607 4394
3608#if EV_IDLE_ENABLE 4395#if EV_IDLE_ENABLE
3609 if (types & EV_IDLE) 4396 if (types & EV_IDLE)
3610 for (j = NUMPRI; i--; ) 4397 for (j = NUMPRI; j--; )
3611 for (i = idlecnt [j]; i--; ) 4398 for (i = idlecnt [j]; i--; )
3612 cb (EV_A_ EV_IDLE, idles [j][i]); 4399 cb (EV_A_ EV_IDLE, idles [j][i]);
3613#endif 4400#endif
3614 4401
3615#if EV_FORK_ENABLE 4402#if EV_FORK_ENABLE
… …
3623 if (types & EV_ASYNC) 4410 if (types & EV_ASYNC)
3624 for (i = asynccnt; i--; ) 4411 for (i = asynccnt; i--; )
3625 cb (EV_A_ EV_ASYNC, asyncs [i]); 4412 cb (EV_A_ EV_ASYNC, asyncs [i]);
3626#endif 4413#endif
3627 4414
4415#if EV_PREPARE_ENABLE
3628 if (types & EV_PREPARE) 4416 if (types & EV_PREPARE)
3629 for (i = preparecnt; i--; ) 4417 for (i = preparecnt; i--; )
3630#if EV_EMBED_ENABLE 4418# if EV_EMBED_ENABLE
3631 if (ev_cb (prepares [i]) != embed_prepare_cb) 4419 if (ev_cb (prepares [i]) != embed_prepare_cb)
3632#endif 4420# endif
3633 cb (EV_A_ EV_PREPARE, prepares [i]); 4421 cb (EV_A_ EV_PREPARE, prepares [i]);
4422#endif
3634 4423
4424#if EV_CHECK_ENABLE
3635 if (types & EV_CHECK) 4425 if (types & EV_CHECK)
3636 for (i = checkcnt; i--; ) 4426 for (i = checkcnt; i--; )
3637 cb (EV_A_ EV_CHECK, checks [i]); 4427 cb (EV_A_ EV_CHECK, checks [i]);
4428#endif
3638 4429
4430#if EV_SIGNAL_ENABLE
3639 if (types & EV_SIGNAL) 4431 if (types & EV_SIGNAL)
3640 for (i = 0; i < EV_NSIG - 1; ++i) 4432 for (i = 0; i < EV_NSIG - 1; ++i)
3641 for (wl = signals [i].head; wl; ) 4433 for (wl = signals [i].head; wl; )
3642 { 4434 {
3643 wn = wl->next; 4435 wn = wl->next;
3644 cb (EV_A_ EV_SIGNAL, wl); 4436 cb (EV_A_ EV_SIGNAL, wl);
3645 wl = wn; 4437 wl = wn;
3646 } 4438 }
4439#endif
3647 4440
4441#if EV_CHILD_ENABLE
3648 if (types & EV_CHILD) 4442 if (types & EV_CHILD)
3649 for (i = EV_PID_HASHSIZE; i--; ) 4443 for (i = (EV_PID_HASHSIZE); i--; )
3650 for (wl = childs [i]; wl; ) 4444 for (wl = childs [i]; wl; )
3651 { 4445 {
3652 wn = wl->next; 4446 wn = wl->next;
3653 cb (EV_A_ EV_CHILD, wl); 4447 cb (EV_A_ EV_CHILD, wl);
3654 wl = wn; 4448 wl = wn;
3655 } 4449 }
4450#endif
3656/* EV_STAT 0x00001000 /* stat data changed */ 4451/* EV_STAT 0x00001000 /* stat data changed */
3657/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4452/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3658} 4453}
3659#endif 4454#endif
3660 4455
3661#if EV_MULTIPLICITY 4456#if EV_MULTIPLICITY
3662 #include "ev_wrap.h" 4457 #include "ev_wrap.h"
3663#endif 4458#endif
3664 4459
3665#ifdef __cplusplus
3666}
3667#endif
3668

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