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Comparing libev/ev.c (file contents):
Revision 1.303 by root, Sun Jul 19 01:36:34 2009 UTC vs.
Revision 1.410 by root, Sat Feb 4 17:57:55 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
172#else 184#else
173# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
174#endif 197#endif
175 198
176#ifndef _WIN32 199#ifndef _WIN32
177# include <sys/time.h> 200# include <sys/time.h>
178# include <sys/wait.h> 201# include <sys/wait.h>
… …
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
183# include <windows.h> 206# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
186# endif 209# endif
210# undef EV_AVOID_STDIO
187#endif 211#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
188 220
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
222
223/* try to deduce the maximum number of signals on this platform */
224#if defined (EV_NSIG)
225/* use what's provided */
226#elif defined (NSIG)
227# define EV_NSIG (NSIG)
228#elif defined(_NSIG)
229# define EV_NSIG (_NSIG)
230#elif defined (SIGMAX)
231# define EV_NSIG (SIGMAX+1)
232#elif defined (SIG_MAX)
233# define EV_NSIG (SIG_MAX+1)
234#elif defined (_SIG_MAX)
235# define EV_NSIG (_SIG_MAX+1)
236#elif defined (MAXSIG)
237# define EV_NSIG (MAXSIG+1)
238#elif defined (MAX_SIG)
239# define EV_NSIG (MAX_SIG+1)
240#elif defined (SIGARRAYSIZE)
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined (_sys_nsig)
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else
245# error "unable to find value for NSIG, please report"
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
190 254
191#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
192# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
193# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
194# else 258# else
195# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
196# endif 260# endif
197#endif 261#endif
198 262
199#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
200# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
201# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
202# else 266# else
203# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
204# endif 268# endif
205#endif 269#endif
206 270
… …
208# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
209#endif 273#endif
210 274
211#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
212# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
213# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
214# else 278# else
215# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
216# endif 280# endif
217#endif 281#endif
218 282
219#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
220# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
221#endif 285#endif
222 286
223#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
224# ifdef _WIN32 288# ifdef _WIN32
225# define EV_USE_POLL 0 289# define EV_USE_POLL 0
226# else 290# else
227# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
228# endif 292# endif
229#endif 293#endif
230 294
231#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
232# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
233# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
234# else 298# else
235# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
236# endif 300# endif
237#endif 301#endif
238 302
… …
244# define EV_USE_PORT 0 308# define EV_USE_PORT 0
245#endif 309#endif
246 310
247#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
248# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
249# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
250# else 314# else
251# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
252# endif 316# endif
253#endif 317#endif
254 318
255#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
256# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_PID_HASHSIZE 1
258# else
259# define EV_PID_HASHSIZE 16
260# endif
261#endif 321#endif
262 322
263#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
264# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
265# define EV_INOTIFY_HASHSIZE 1
266# else
267# define EV_INOTIFY_HASHSIZE 16
268# endif
269#endif 325#endif
270 326
271#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
272# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
273# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
274# else 330# else
275# define EV_USE_EVENTFD 0 331# define EV_USE_EVENTFD 0
276# endif 332# endif
277#endif 333#endif
278 334
279#ifndef EV_USE_SIGNALFD 335#ifndef EV_USE_SIGNALFD
280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
281# define EV_USE_SIGNALFD 1 337# define EV_USE_SIGNALFD EV_FEATURE_OS
282# else 338# else
283# define EV_USE_SIGNALFD 0 339# define EV_USE_SIGNALFD 0
284# endif 340# endif
285#endif 341#endif
286 342
… …
289# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
290# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
291#endif 347#endif
292 348
293#ifndef EV_VERIFY 349#ifndef EV_VERIFY
294# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
295#endif 351#endif
296 352
297#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
298# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
299#endif 355#endif
300 356
301#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
302# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
303#endif 359#endif
304 360
305/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
306/* which makes programs even slower. might work on other unices, too. */ 362/* which makes programs even slower. might work on other unices, too. */
307#if EV_USE_CLOCK_SYSCALL 363#if EV_USE_CLOCK_SYSCALL
… …
316# endif 372# endif
317#endif 373#endif
318 374
319/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 375/* this block fixes any misconfiguration where we know we run into trouble otherwise */
320 376
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
321#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
322# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
323# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
324#endif 386#endif
325 387
… …
332# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
334#endif 396#endif
335 397
336#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
337# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux)
338# include <sys/select.h> 401# include <sys/select.h>
339# endif 402# endif
340#endif 403#endif
341 404
342#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
343# include <sys/utsname.h>
344# include <sys/statfs.h> 406# include <sys/statfs.h>
345# include <sys/inotify.h> 407# include <sys/inotify.h>
346/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
347# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
348# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
359# include <stdint.h> 421# include <stdint.h>
360# ifndef EFD_NONBLOCK 422# ifndef EFD_NONBLOCK
361# define EFD_NONBLOCK O_NONBLOCK 423# define EFD_NONBLOCK O_NONBLOCK
362# endif 424# endif
363# ifndef EFD_CLOEXEC 425# ifndef EFD_CLOEXEC
426# ifdef O_CLOEXEC
364# define EFD_CLOEXEC O_CLOEXEC 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
365# endif 431# endif
366# ifdef __cplusplus 432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
367extern "C" { 433#endif
434
435#if EV_USE_SIGNALFD
436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
437# include <stdint.h>
438# ifndef SFD_NONBLOCK
439# define SFD_NONBLOCK O_NONBLOCK
368# endif 440# endif
369int eventfd (unsigned int initval, int flags); 441# ifndef SFD_CLOEXEC
370# ifdef __cplusplus 442# ifdef O_CLOEXEC
371} 443# define SFD_CLOEXEC O_CLOEXEC
444# else
445# define SFD_CLOEXEC 02000000
446# endif
372# endif 447# endif
373#endif 448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
374 449
375#if EV_USE_SIGNALFD 450struct signalfd_siginfo
376# include <sys/signalfd.h> 451{
452 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)];
454};
377#endif 455#endif
378 456
379/**/ 457/**/
380 458
381#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
382# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
383#else 461#else
384# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
385#endif 463#endif
386 464
387/* 465/*
388 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
389 * It is added to ev_rt_now when scheduling periodics
390 * to ensure progress, time-wise, even when rounding
391 * errors are against us.
392 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
393 * Better solutions welcome.
394 */ 468 */
395#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
396 471
397#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
398#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
399/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
400 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
401#if __GNUC__ >= 4 519 #if __GNUC__
402# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
403# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
404#else 526#else
405# define expect(expr,value) (expr) 527 #include <inttypes.h>
406# define noinline
407# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
408# define inline
409# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
410#endif 542 #endif
543#endif
411 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
571 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
574 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined(__s390__) || defined(__s390x__)
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #endif
583 #endif
584#endif
585
586#ifndef ECB_MEMORY_FENCE
587 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
588 #define ECB_MEMORY_FENCE __sync_synchronize ()
589 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
590 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
591 #elif _MSC_VER >= 1400 /* VC++ 2005 */
592 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
593 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
594 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
595 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
596 #elif defined(_WIN32)
597 #include <WinNT.h>
598 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
599 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #include <mbarrier.h>
601 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
602 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
603 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
604 #endif
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if !ECB_AVOID_PTHREADS
609 /*
610 * if you get undefined symbol references to pthread_mutex_lock,
611 * or failure to find pthread.h, then you should implement
612 * the ECB_MEMORY_FENCE operations for your cpu/compiler
613 * OR provide pthread.h and link against the posix thread library
614 * of your system.
615 */
616 #include <pthread.h>
617 #define ECB_NEEDS_PTHREADS 1
618 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
619
620 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
621 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
622 #endif
623#endif
624
625#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
626 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
627#endif
628
629#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
630 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
631#endif
632
633/*****************************************************************************/
634
635#define ECB_C99 (__STDC_VERSION__ >= 199901L)
636
637#if __cplusplus
638 #define ecb_inline static inline
639#elif ECB_GCC_VERSION(2,5)
640 #define ecb_inline static __inline__
641#elif ECB_C99
642 #define ecb_inline static inline
643#else
644 #define ecb_inline static
645#endif
646
647#if ECB_GCC_VERSION(3,3)
648 #define ecb_restrict __restrict__
649#elif ECB_C99
650 #define ecb_restrict restrict
651#else
652 #define ecb_restrict
653#endif
654
655typedef int ecb_bool;
656
657#define ECB_CONCAT_(a, b) a ## b
658#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
659#define ECB_STRINGIFY_(a) # a
660#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
661
662#define ecb_function_ ecb_inline
663
664#if ECB_GCC_VERSION(3,1)
665 #define ecb_attribute(attrlist) __attribute__(attrlist)
666 #define ecb_is_constant(expr) __builtin_constant_p (expr)
667 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
668 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
669#else
670 #define ecb_attribute(attrlist)
671 #define ecb_is_constant(expr) 0
672 #define ecb_expect(expr,value) (expr)
673 #define ecb_prefetch(addr,rw,locality)
674#endif
675
676/* no emulation for ecb_decltype */
677#if ECB_GCC_VERSION(4,5)
678 #define ecb_decltype(x) __decltype(x)
679#elif ECB_GCC_VERSION(3,0)
680 #define ecb_decltype(x) __typeof(x)
681#endif
682
683#define ecb_noinline ecb_attribute ((__noinline__))
684#define ecb_noreturn ecb_attribute ((__noreturn__))
685#define ecb_unused ecb_attribute ((__unused__))
686#define ecb_const ecb_attribute ((__const__))
687#define ecb_pure ecb_attribute ((__pure__))
688
689#if ECB_GCC_VERSION(4,3)
690 #define ecb_artificial ecb_attribute ((__artificial__))
691 #define ecb_hot ecb_attribute ((__hot__))
692 #define ecb_cold ecb_attribute ((__cold__))
693#else
694 #define ecb_artificial
695 #define ecb_hot
696 #define ecb_cold
697#endif
698
699/* put around conditional expressions if you are very sure that the */
700/* expression is mostly true or mostly false. note that these return */
701/* booleans, not the expression. */
412#define expect_false(expr) expect ((expr) != 0, 0) 702#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
413#define expect_true(expr) expect ((expr) != 0, 1) 703#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
704/* for compatibility to the rest of the world */
705#define ecb_likely(expr) ecb_expect_true (expr)
706#define ecb_unlikely(expr) ecb_expect_false (expr)
707
708/* count trailing zero bits and count # of one bits */
709#if ECB_GCC_VERSION(3,4)
710 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
711 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
712 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
713 #define ecb_ctz32(x) __builtin_ctz (x)
714 #define ecb_ctz64(x) __builtin_ctzll (x)
715 #define ecb_popcount32(x) __builtin_popcount (x)
716 /* no popcountll */
717#else
718 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
719 ecb_function_ int
720 ecb_ctz32 (uint32_t x)
721 {
722 int r = 0;
723
724 x &= ~x + 1; /* this isolates the lowest bit */
725
726#if ECB_branchless_on_i386
727 r += !!(x & 0xaaaaaaaa) << 0;
728 r += !!(x & 0xcccccccc) << 1;
729 r += !!(x & 0xf0f0f0f0) << 2;
730 r += !!(x & 0xff00ff00) << 3;
731 r += !!(x & 0xffff0000) << 4;
732#else
733 if (x & 0xaaaaaaaa) r += 1;
734 if (x & 0xcccccccc) r += 2;
735 if (x & 0xf0f0f0f0) r += 4;
736 if (x & 0xff00ff00) r += 8;
737 if (x & 0xffff0000) r += 16;
738#endif
739
740 return r;
741 }
742
743 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
744 ecb_function_ int
745 ecb_ctz64 (uint64_t x)
746 {
747 int shift = x & 0xffffffffU ? 0 : 32;
748 return ecb_ctz32 (x >> shift) + shift;
749 }
750
751 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
752 ecb_function_ int
753 ecb_popcount32 (uint32_t x)
754 {
755 x -= (x >> 1) & 0x55555555;
756 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
757 x = ((x >> 4) + x) & 0x0f0f0f0f;
758 x *= 0x01010101;
759
760 return x >> 24;
761 }
762
763 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
764 ecb_function_ int ecb_ld32 (uint32_t x)
765 {
766 int r = 0;
767
768 if (x >> 16) { x >>= 16; r += 16; }
769 if (x >> 8) { x >>= 8; r += 8; }
770 if (x >> 4) { x >>= 4; r += 4; }
771 if (x >> 2) { x >>= 2; r += 2; }
772 if (x >> 1) { r += 1; }
773
774 return r;
775 }
776
777 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
778 ecb_function_ int ecb_ld64 (uint64_t x)
779 {
780 int r = 0;
781
782 if (x >> 32) { x >>= 32; r += 32; }
783
784 return r + ecb_ld32 (x);
785 }
786#endif
787
788ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
789ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
790{
791 return ( (x * 0x0802U & 0x22110U)
792 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
793}
794
795ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
796ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
797{
798 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
799 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
800 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
801 x = ( x >> 8 ) | ( x << 8);
802
803 return x;
804}
805
806ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
807ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
808{
809 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
810 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
811 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
812 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
813 x = ( x >> 16 ) | ( x << 16);
814
815 return x;
816}
817
818/* popcount64 is only available on 64 bit cpus as gcc builtin */
819/* so for this version we are lazy */
820ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
821ecb_function_ int
822ecb_popcount64 (uint64_t x)
823{
824 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
825}
826
827ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
828ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
829ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
830ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
831ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
832ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
833ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
834ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
835
836ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
837ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
838ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
839ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
840ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
841ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
842ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
843ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
844
845#if ECB_GCC_VERSION(4,3)
846 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
847 #define ecb_bswap32(x) __builtin_bswap32 (x)
848 #define ecb_bswap64(x) __builtin_bswap64 (x)
849#else
850 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
851 ecb_function_ uint16_t
852 ecb_bswap16 (uint16_t x)
853 {
854 return ecb_rotl16 (x, 8);
855 }
856
857 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
858 ecb_function_ uint32_t
859 ecb_bswap32 (uint32_t x)
860 {
861 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
862 }
863
864 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
865 ecb_function_ uint64_t
866 ecb_bswap64 (uint64_t x)
867 {
868 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
869 }
870#endif
871
872#if ECB_GCC_VERSION(4,5)
873 #define ecb_unreachable() __builtin_unreachable ()
874#else
875 /* this seems to work fine, but gcc always emits a warning for it :/ */
876 ecb_inline void ecb_unreachable (void) ecb_noreturn;
877 ecb_inline void ecb_unreachable (void) { }
878#endif
879
880/* try to tell the compiler that some condition is definitely true */
881#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
882
883ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
884ecb_inline unsigned char
885ecb_byteorder_helper (void)
886{
887 const uint32_t u = 0x11223344;
888 return *(unsigned char *)&u;
889}
890
891ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
892ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
893ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
894ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
895
896#if ECB_GCC_VERSION(3,0) || ECB_C99
897 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
898#else
899 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
900#endif
901
902#if __cplusplus
903 template<typename T>
904 static inline T ecb_div_rd (T val, T div)
905 {
906 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
907 }
908 template<typename T>
909 static inline T ecb_div_ru (T val, T div)
910 {
911 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
912 }
913#else
914 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
915 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
916#endif
917
918#if ecb_cplusplus_does_not_suck
919 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
920 template<typename T, int N>
921 static inline int ecb_array_length (const T (&arr)[N])
922 {
923 return N;
924 }
925#else
926 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
927#endif
928
929#endif
930
931/* ECB.H END */
932
933#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
934/* if your architecture doesn't need memory fences, e.g. because it is
935 * single-cpu/core, or if you use libev in a project that doesn't use libev
936 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
937 * libev, in which cases the memory fences become nops.
938 * alternatively, you can remove this #error and link against libpthread,
939 * which will then provide the memory fences.
940 */
941# error "memory fences not defined for your architecture, please report"
942#endif
943
944#ifndef ECB_MEMORY_FENCE
945# define ECB_MEMORY_FENCE do { } while (0)
946# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
947# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
948#endif
949
950#define expect_false(cond) ecb_expect_false (cond)
951#define expect_true(cond) ecb_expect_true (cond)
952#define noinline ecb_noinline
953
414#define inline_size static inline 954#define inline_size ecb_inline
415 955
416#if EV_MINIMAL 956#if EV_FEATURE_CODE
957# define inline_speed ecb_inline
958#else
417# define inline_speed static noinline 959# define inline_speed static noinline
418#else
419# define inline_speed static inline
420#endif 960#endif
421 961
422#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 962#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
423 963
424#if EV_MINPRI == EV_MAXPRI 964#if EV_MINPRI == EV_MAXPRI
… …
437#define ev_active(w) ((W)(w))->active 977#define ev_active(w) ((W)(w))->active
438#define ev_at(w) ((WT)(w))->at 978#define ev_at(w) ((WT)(w))->at
439 979
440#if EV_USE_REALTIME 980#if EV_USE_REALTIME
441/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 981/* sig_atomic_t is used to avoid per-thread variables or locking but still */
442/* giving it a reasonably high chance of working on typical architetcures */ 982/* giving it a reasonably high chance of working on typical architectures */
443static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 983static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
444#endif 984#endif
445 985
446#if EV_USE_MONOTONIC 986#if EV_USE_MONOTONIC
447static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 987static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
448#endif 988#endif
449 989
990#ifndef EV_FD_TO_WIN32_HANDLE
991# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
992#endif
993#ifndef EV_WIN32_HANDLE_TO_FD
994# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
995#endif
996#ifndef EV_WIN32_CLOSE_FD
997# define EV_WIN32_CLOSE_FD(fd) close (fd)
998#endif
999
450#ifdef _WIN32 1000#ifdef _WIN32
451# include "ev_win32.c" 1001# include "ev_win32.c"
452#endif 1002#endif
453 1003
454/*****************************************************************************/ 1004/*****************************************************************************/
455 1005
1006/* define a suitable floor function (only used by periodics atm) */
1007
1008#if EV_USE_FLOOR
1009# include <math.h>
1010# define ev_floor(v) floor (v)
1011#else
1012
1013#include <float.h>
1014
1015/* a floor() replacement function, should be independent of ev_tstamp type */
1016static ev_tstamp noinline
1017ev_floor (ev_tstamp v)
1018{
1019 /* the choice of shift factor is not terribly important */
1020#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1021 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1022#else
1023 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1024#endif
1025
1026 /* argument too large for an unsigned long? */
1027 if (expect_false (v >= shift))
1028 {
1029 ev_tstamp f;
1030
1031 if (v == v - 1.)
1032 return v; /* very large number */
1033
1034 f = shift * ev_floor (v * (1. / shift));
1035 return f + ev_floor (v - f);
1036 }
1037
1038 /* special treatment for negative args? */
1039 if (expect_false (v < 0.))
1040 {
1041 ev_tstamp f = -ev_floor (-v);
1042
1043 return f - (f == v ? 0 : 1);
1044 }
1045
1046 /* fits into an unsigned long */
1047 return (unsigned long)v;
1048}
1049
1050#endif
1051
1052/*****************************************************************************/
1053
1054#ifdef __linux
1055# include <sys/utsname.h>
1056#endif
1057
1058static unsigned int noinline ecb_cold
1059ev_linux_version (void)
1060{
1061#ifdef __linux
1062 unsigned int v = 0;
1063 struct utsname buf;
1064 int i;
1065 char *p = buf.release;
1066
1067 if (uname (&buf))
1068 return 0;
1069
1070 for (i = 3+1; --i; )
1071 {
1072 unsigned int c = 0;
1073
1074 for (;;)
1075 {
1076 if (*p >= '0' && *p <= '9')
1077 c = c * 10 + *p++ - '0';
1078 else
1079 {
1080 p += *p == '.';
1081 break;
1082 }
1083 }
1084
1085 v = (v << 8) | c;
1086 }
1087
1088 return v;
1089#else
1090 return 0;
1091#endif
1092}
1093
1094/*****************************************************************************/
1095
1096#if EV_AVOID_STDIO
1097static void noinline ecb_cold
1098ev_printerr (const char *msg)
1099{
1100 write (STDERR_FILENO, msg, strlen (msg));
1101}
1102#endif
1103
456static void (*syserr_cb)(const char *msg); 1104static void (*syserr_cb)(const char *msg);
457 1105
458void 1106void ecb_cold
459ev_set_syserr_cb (void (*cb)(const char *msg)) 1107ev_set_syserr_cb (void (*cb)(const char *msg))
460{ 1108{
461 syserr_cb = cb; 1109 syserr_cb = cb;
462} 1110}
463 1111
464static void noinline 1112static void noinline ecb_cold
465ev_syserr (const char *msg) 1113ev_syserr (const char *msg)
466{ 1114{
467 if (!msg) 1115 if (!msg)
468 msg = "(libev) system error"; 1116 msg = "(libev) system error";
469 1117
470 if (syserr_cb) 1118 if (syserr_cb)
471 syserr_cb (msg); 1119 syserr_cb (msg);
472 else 1120 else
473 { 1121 {
1122#if EV_AVOID_STDIO
1123 ev_printerr (msg);
1124 ev_printerr (": ");
1125 ev_printerr (strerror (errno));
1126 ev_printerr ("\n");
1127#else
474 perror (msg); 1128 perror (msg);
1129#endif
475 abort (); 1130 abort ();
476 } 1131 }
477} 1132}
478 1133
479static void * 1134static void *
480ev_realloc_emul (void *ptr, long size) 1135ev_realloc_emul (void *ptr, long size)
481{ 1136{
1137#if __GLIBC__
1138 return realloc (ptr, size);
1139#else
482 /* some systems, notably openbsd and darwin, fail to properly 1140 /* some systems, notably openbsd and darwin, fail to properly
483 * implement realloc (x, 0) (as required by both ansi c-98 and 1141 * implement realloc (x, 0) (as required by both ansi c-89 and
484 * the single unix specification, so work around them here. 1142 * the single unix specification, so work around them here.
485 */ 1143 */
486 1144
487 if (size) 1145 if (size)
488 return realloc (ptr, size); 1146 return realloc (ptr, size);
489 1147
490 free (ptr); 1148 free (ptr);
491 return 0; 1149 return 0;
1150#endif
492} 1151}
493 1152
494static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1153static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
495 1154
496void 1155void ecb_cold
497ev_set_allocator (void *(*cb)(void *ptr, long size)) 1156ev_set_allocator (void *(*cb)(void *ptr, long size))
498{ 1157{
499 alloc = cb; 1158 alloc = cb;
500} 1159}
501 1160
… …
504{ 1163{
505 ptr = alloc (ptr, size); 1164 ptr = alloc (ptr, size);
506 1165
507 if (!ptr && size) 1166 if (!ptr && size)
508 { 1167 {
1168#if EV_AVOID_STDIO
1169 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1170#else
509 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1171 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1172#endif
510 abort (); 1173 abort ();
511 } 1174 }
512 1175
513 return ptr; 1176 return ptr;
514} 1177}
… …
530 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1193 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
531 unsigned char unused; 1194 unsigned char unused;
532#if EV_USE_EPOLL 1195#if EV_USE_EPOLL
533 unsigned int egen; /* generation counter to counter epoll bugs */ 1196 unsigned int egen; /* generation counter to counter epoll bugs */
534#endif 1197#endif
535#if EV_SELECT_IS_WINSOCKET 1198#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
536 SOCKET handle; 1199 SOCKET handle;
1200#endif
1201#if EV_USE_IOCP
1202 OVERLAPPED or, ow;
537#endif 1203#endif
538} ANFD; 1204} ANFD;
539 1205
540/* stores the pending event set for a given watcher */ 1206/* stores the pending event set for a given watcher */
541typedef struct 1207typedef struct
… …
583 #undef VAR 1249 #undef VAR
584 }; 1250 };
585 #include "ev_wrap.h" 1251 #include "ev_wrap.h"
586 1252
587 static struct ev_loop default_loop_struct; 1253 static struct ev_loop default_loop_struct;
588 struct ev_loop *ev_default_loop_ptr; 1254 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
589 1255
590#else 1256#else
591 1257
592 ev_tstamp ev_rt_now; 1258 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
593 #define VAR(name,decl) static decl; 1259 #define VAR(name,decl) static decl;
594 #include "ev_vars.h" 1260 #include "ev_vars.h"
595 #undef VAR 1261 #undef VAR
596 1262
597 static int ev_default_loop_ptr; 1263 static int ev_default_loop_ptr;
598 1264
599#endif 1265#endif
600 1266
601#if EV_MINIMAL < 2 1267#if EV_FEATURE_API
602# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1268# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
603# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1269# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
604# define EV_INVOKE_PENDING invoke_cb (EV_A) 1270# define EV_INVOKE_PENDING invoke_cb (EV_A)
605#else 1271#else
606# define EV_RELEASE_CB (void)0 1272# define EV_RELEASE_CB (void)0
607# define EV_ACQUIRE_CB (void)0 1273# define EV_ACQUIRE_CB (void)0
608# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1274# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
609#endif 1275#endif
610 1276
611#define EVUNLOOP_RECURSE 0x80 1277#define EVBREAK_RECURSE 0x80
612 1278
613/*****************************************************************************/ 1279/*****************************************************************************/
614 1280
615#ifndef EV_HAVE_EV_TIME 1281#ifndef EV_HAVE_EV_TIME
616ev_tstamp 1282ev_tstamp
… …
660 if (delay > 0.) 1326 if (delay > 0.)
661 { 1327 {
662#if EV_USE_NANOSLEEP 1328#if EV_USE_NANOSLEEP
663 struct timespec ts; 1329 struct timespec ts;
664 1330
665 ts.tv_sec = (time_t)delay; 1331 EV_TS_SET (ts, delay);
666 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
667
668 nanosleep (&ts, 0); 1332 nanosleep (&ts, 0);
669#elif defined(_WIN32) 1333#elif defined(_WIN32)
670 Sleep ((unsigned long)(delay * 1e3)); 1334 Sleep ((unsigned long)(delay * 1e3));
671#else 1335#else
672 struct timeval tv; 1336 struct timeval tv;
673 1337
674 tv.tv_sec = (time_t)delay;
675 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
676
677 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1338 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
678 /* something not guaranteed by newer posix versions, but guaranteed */ 1339 /* something not guaranteed by newer posix versions, but guaranteed */
679 /* by older ones */ 1340 /* by older ones */
1341 EV_TV_SET (tv, delay);
680 select (0, 0, 0, 0, &tv); 1342 select (0, 0, 0, 0, &tv);
681#endif 1343#endif
682 } 1344 }
683} 1345}
684 1346
685/*****************************************************************************/ 1347/*****************************************************************************/
686 1348
687#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1349#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
688 1350
689/* find a suitable new size for the given array, */ 1351/* find a suitable new size for the given array, */
690/* hopefully by rounding to a ncie-to-malloc size */ 1352/* hopefully by rounding to a nice-to-malloc size */
691inline_size int 1353inline_size int
692array_nextsize (int elem, int cur, int cnt) 1354array_nextsize (int elem, int cur, int cnt)
693{ 1355{
694 int ncur = cur + 1; 1356 int ncur = cur + 1;
695 1357
696 do 1358 do
697 ncur <<= 1; 1359 ncur <<= 1;
698 while (cnt > ncur); 1360 while (cnt > ncur);
699 1361
700 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1362 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
701 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1363 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
702 { 1364 {
703 ncur *= elem; 1365 ncur *= elem;
704 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1366 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
705 ncur = ncur - sizeof (void *) * 4; 1367 ncur = ncur - sizeof (void *) * 4;
… …
707 } 1369 }
708 1370
709 return ncur; 1371 return ncur;
710} 1372}
711 1373
712static noinline void * 1374static void * noinline ecb_cold
713array_realloc (int elem, void *base, int *cur, int cnt) 1375array_realloc (int elem, void *base, int *cur, int cnt)
714{ 1376{
715 *cur = array_nextsize (elem, *cur, cnt); 1377 *cur = array_nextsize (elem, *cur, cnt);
716 return ev_realloc (base, elem * *cur); 1378 return ev_realloc (base, elem * *cur);
717} 1379}
… …
720 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1382 memset ((void *)(base), 0, sizeof (*(base)) * (count))
721 1383
722#define array_needsize(type,base,cur,cnt,init) \ 1384#define array_needsize(type,base,cur,cnt,init) \
723 if (expect_false ((cnt) > (cur))) \ 1385 if (expect_false ((cnt) > (cur))) \
724 { \ 1386 { \
725 int ocur_ = (cur); \ 1387 int ecb_unused ocur_ = (cur); \
726 (base) = (type *)array_realloc \ 1388 (base) = (type *)array_realloc \
727 (sizeof (type), (base), &(cur), (cnt)); \ 1389 (sizeof (type), (base), &(cur), (cnt)); \
728 init ((base) + (ocur_), (cur) - ocur_); \ 1390 init ((base) + (ocur_), (cur) - ocur_); \
729 } 1391 }
730 1392
… …
791} 1453}
792 1454
793/*****************************************************************************/ 1455/*****************************************************************************/
794 1456
795inline_speed void 1457inline_speed void
796fd_event_nc (EV_P_ int fd, int revents) 1458fd_event_nocheck (EV_P_ int fd, int revents)
797{ 1459{
798 ANFD *anfd = anfds + fd; 1460 ANFD *anfd = anfds + fd;
799 ev_io *w; 1461 ev_io *w;
800 1462
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1463 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
813fd_event (EV_P_ int fd, int revents) 1475fd_event (EV_P_ int fd, int revents)
814{ 1476{
815 ANFD *anfd = anfds + fd; 1477 ANFD *anfd = anfds + fd;
816 1478
817 if (expect_true (!anfd->reify)) 1479 if (expect_true (!anfd->reify))
818 fd_event_nc (EV_A_ fd, revents); 1480 fd_event_nocheck (EV_A_ fd, revents);
819} 1481}
820 1482
821void 1483void
822ev_feed_fd_event (EV_P_ int fd, int revents) 1484ev_feed_fd_event (EV_P_ int fd, int revents)
823{ 1485{
824 if (fd >= 0 && fd < anfdmax) 1486 if (fd >= 0 && fd < anfdmax)
825 fd_event_nc (EV_A_ fd, revents); 1487 fd_event_nocheck (EV_A_ fd, revents);
826} 1488}
827 1489
828/* make sure the external fd watch events are in-sync */ 1490/* make sure the external fd watch events are in-sync */
829/* with the kernel/libev internal state */ 1491/* with the kernel/libev internal state */
830inline_size void 1492inline_size void
831fd_reify (EV_P) 1493fd_reify (EV_P)
832{ 1494{
833 int i; 1495 int i;
834 1496
1497#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1498 for (i = 0; i < fdchangecnt; ++i)
1499 {
1500 int fd = fdchanges [i];
1501 ANFD *anfd = anfds + fd;
1502
1503 if (anfd->reify & EV__IOFDSET && anfd->head)
1504 {
1505 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1506
1507 if (handle != anfd->handle)
1508 {
1509 unsigned long arg;
1510
1511 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1512
1513 /* handle changed, but fd didn't - we need to do it in two steps */
1514 backend_modify (EV_A_ fd, anfd->events, 0);
1515 anfd->events = 0;
1516 anfd->handle = handle;
1517 }
1518 }
1519 }
1520#endif
1521
835 for (i = 0; i < fdchangecnt; ++i) 1522 for (i = 0; i < fdchangecnt; ++i)
836 { 1523 {
837 int fd = fdchanges [i]; 1524 int fd = fdchanges [i];
838 ANFD *anfd = anfds + fd; 1525 ANFD *anfd = anfds + fd;
839 ev_io *w; 1526 ev_io *w;
840 1527
841 unsigned char events = 0; 1528 unsigned char o_events = anfd->events;
1529 unsigned char o_reify = anfd->reify;
842 1530
843 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1531 anfd->reify = 0;
844 events |= (unsigned char)w->events;
845 1532
846#if EV_SELECT_IS_WINSOCKET 1533 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
847 if (events)
848 { 1534 {
849 unsigned long arg; 1535 anfd->events = 0;
850 #ifdef EV_FD_TO_WIN32_HANDLE 1536
851 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1537 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
852 #else 1538 anfd->events |= (unsigned char)w->events;
853 anfd->handle = _get_osfhandle (fd); 1539
854 #endif 1540 if (o_events != anfd->events)
855 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1541 o_reify = EV__IOFDSET; /* actually |= */
856 } 1542 }
857#endif
858 1543
859 { 1544 if (o_reify & EV__IOFDSET)
860 unsigned char o_events = anfd->events;
861 unsigned char o_reify = anfd->reify;
862
863 anfd->reify = 0;
864 anfd->events = events;
865
866 if (o_events != events || o_reify & EV__IOFDSET)
867 backend_modify (EV_A_ fd, o_events, events); 1545 backend_modify (EV_A_ fd, o_events, anfd->events);
868 }
869 } 1546 }
870 1547
871 fdchangecnt = 0; 1548 fdchangecnt = 0;
872} 1549}
873 1550
… …
885 fdchanges [fdchangecnt - 1] = fd; 1562 fdchanges [fdchangecnt - 1] = fd;
886 } 1563 }
887} 1564}
888 1565
889/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1566/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
890inline_speed void 1567inline_speed void ecb_cold
891fd_kill (EV_P_ int fd) 1568fd_kill (EV_P_ int fd)
892{ 1569{
893 ev_io *w; 1570 ev_io *w;
894 1571
895 while ((w = (ev_io *)anfds [fd].head)) 1572 while ((w = (ev_io *)anfds [fd].head))
… …
897 ev_io_stop (EV_A_ w); 1574 ev_io_stop (EV_A_ w);
898 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1575 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
899 } 1576 }
900} 1577}
901 1578
902/* check whether the given fd is atcually valid, for error recovery */ 1579/* check whether the given fd is actually valid, for error recovery */
903inline_size int 1580inline_size int ecb_cold
904fd_valid (int fd) 1581fd_valid (int fd)
905{ 1582{
906#ifdef _WIN32 1583#ifdef _WIN32
907 return _get_osfhandle (fd) != -1; 1584 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
908#else 1585#else
909 return fcntl (fd, F_GETFD) != -1; 1586 return fcntl (fd, F_GETFD) != -1;
910#endif 1587#endif
911} 1588}
912 1589
913/* called on EBADF to verify fds */ 1590/* called on EBADF to verify fds */
914static void noinline 1591static void noinline ecb_cold
915fd_ebadf (EV_P) 1592fd_ebadf (EV_P)
916{ 1593{
917 int fd; 1594 int fd;
918 1595
919 for (fd = 0; fd < anfdmax; ++fd) 1596 for (fd = 0; fd < anfdmax; ++fd)
… …
921 if (!fd_valid (fd) && errno == EBADF) 1598 if (!fd_valid (fd) && errno == EBADF)
922 fd_kill (EV_A_ fd); 1599 fd_kill (EV_A_ fd);
923} 1600}
924 1601
925/* called on ENOMEM in select/poll to kill some fds and retry */ 1602/* called on ENOMEM in select/poll to kill some fds and retry */
926static void noinline 1603static void noinline ecb_cold
927fd_enomem (EV_P) 1604fd_enomem (EV_P)
928{ 1605{
929 int fd; 1606 int fd;
930 1607
931 for (fd = anfdmax; fd--; ) 1608 for (fd = anfdmax; fd--; )
932 if (anfds [fd].events) 1609 if (anfds [fd].events)
933 { 1610 {
934 fd_kill (EV_A_ fd); 1611 fd_kill (EV_A_ fd);
935 return; 1612 break;
936 } 1613 }
937} 1614}
938 1615
939/* usually called after fork if backend needs to re-arm all fds from scratch */ 1616/* usually called after fork if backend needs to re-arm all fds from scratch */
940static void noinline 1617static void noinline
… …
949 anfds [fd].emask = 0; 1626 anfds [fd].emask = 0;
950 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1627 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
951 } 1628 }
952} 1629}
953 1630
1631/* used to prepare libev internal fd's */
1632/* this is not fork-safe */
1633inline_speed void
1634fd_intern (int fd)
1635{
1636#ifdef _WIN32
1637 unsigned long arg = 1;
1638 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1639#else
1640 fcntl (fd, F_SETFD, FD_CLOEXEC);
1641 fcntl (fd, F_SETFL, O_NONBLOCK);
1642#endif
1643}
1644
954/*****************************************************************************/ 1645/*****************************************************************************/
955 1646
956/* 1647/*
957 * the heap functions want a real array index. array index 0 uis guaranteed to not 1648 * the heap functions want a real array index. array index 0 is guaranteed to not
958 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1649 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
959 * the branching factor of the d-tree. 1650 * the branching factor of the d-tree.
960 */ 1651 */
961 1652
962/* 1653/*
… …
1030 1721
1031 for (;;) 1722 for (;;)
1032 { 1723 {
1033 int c = k << 1; 1724 int c = k << 1;
1034 1725
1035 if (c > N + HEAP0 - 1) 1726 if (c >= N + HEAP0)
1036 break; 1727 break;
1037 1728
1038 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1729 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1039 ? 1 : 0; 1730 ? 1 : 0;
1040 1731
… …
1076 1767
1077/* move an element suitably so it is in a correct place */ 1768/* move an element suitably so it is in a correct place */
1078inline_size void 1769inline_size void
1079adjustheap (ANHE *heap, int N, int k) 1770adjustheap (ANHE *heap, int N, int k)
1080{ 1771{
1081 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1772 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1082 upheap (heap, k); 1773 upheap (heap, k);
1083 else 1774 else
1084 downheap (heap, N, k); 1775 downheap (heap, N, k);
1085} 1776}
1086 1777
… …
1099/*****************************************************************************/ 1790/*****************************************************************************/
1100 1791
1101/* associate signal watchers to a signal signal */ 1792/* associate signal watchers to a signal signal */
1102typedef struct 1793typedef struct
1103{ 1794{
1795 EV_ATOMIC_T pending;
1796#if EV_MULTIPLICITY
1797 EV_P;
1798#endif
1104 WL head; 1799 WL head;
1105 EV_ATOMIC_T gotsig;
1106} ANSIG; 1800} ANSIG;
1107 1801
1108static ANSIG *signals; 1802static ANSIG signals [EV_NSIG - 1];
1109static int signalmax;
1110
1111static EV_ATOMIC_T gotsig;
1112 1803
1113/*****************************************************************************/ 1804/*****************************************************************************/
1114 1805
1115/* used to prepare libev internal fd's */ 1806#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1116/* this is not fork-safe */
1117inline_speed void
1118fd_intern (int fd)
1119{
1120#ifdef _WIN32
1121 unsigned long arg = 1;
1122 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1123#else
1124 fcntl (fd, F_SETFD, FD_CLOEXEC);
1125 fcntl (fd, F_SETFL, O_NONBLOCK);
1126#endif
1127}
1128 1807
1129static void noinline 1808static void noinline ecb_cold
1130evpipe_init (EV_P) 1809evpipe_init (EV_P)
1131{ 1810{
1132 if (!ev_is_active (&pipe_w)) 1811 if (!ev_is_active (&pipe_w))
1133 { 1812 {
1134#if EV_USE_EVENTFD 1813# if EV_USE_EVENTFD
1135 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1814 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1136 if (evfd < 0 && errno == EINVAL) 1815 if (evfd < 0 && errno == EINVAL)
1137 evfd = eventfd (0, 0); 1816 evfd = eventfd (0, 0);
1138 1817
1139 if (evfd >= 0) 1818 if (evfd >= 0)
… …
1141 evpipe [0] = -1; 1820 evpipe [0] = -1;
1142 fd_intern (evfd); /* doing it twice doesn't hurt */ 1821 fd_intern (evfd); /* doing it twice doesn't hurt */
1143 ev_io_set (&pipe_w, evfd, EV_READ); 1822 ev_io_set (&pipe_w, evfd, EV_READ);
1144 } 1823 }
1145 else 1824 else
1146#endif 1825# endif
1147 { 1826 {
1148 while (pipe (evpipe)) 1827 while (pipe (evpipe))
1149 ev_syserr ("(libev) error creating signal/async pipe"); 1828 ev_syserr ("(libev) error creating signal/async pipe");
1150 1829
1151 fd_intern (evpipe [0]); 1830 fd_intern (evpipe [0]);
… …
1156 ev_io_start (EV_A_ &pipe_w); 1835 ev_io_start (EV_A_ &pipe_w);
1157 ev_unref (EV_A); /* watcher should not keep loop alive */ 1836 ev_unref (EV_A); /* watcher should not keep loop alive */
1158 } 1837 }
1159} 1838}
1160 1839
1161inline_size void 1840inline_speed void
1162evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1841evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1163{ 1842{
1164 if (!*flag) 1843 if (expect_true (*flag))
1844 return;
1845
1846 *flag = 1;
1847
1848 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1849
1850 pipe_write_skipped = 1;
1851
1852 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1853
1854 if (pipe_write_wanted)
1165 { 1855 {
1856 int old_errno;
1857
1858 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1859
1166 int old_errno = errno; /* save errno because write might clobber it */ 1860 old_errno = errno; /* save errno because write will clobber it */
1167
1168 *flag = 1;
1169 1861
1170#if EV_USE_EVENTFD 1862#if EV_USE_EVENTFD
1171 if (evfd >= 0) 1863 if (evfd >= 0)
1172 { 1864 {
1173 uint64_t counter = 1; 1865 uint64_t counter = 1;
1174 write (evfd, &counter, sizeof (uint64_t)); 1866 write (evfd, &counter, sizeof (uint64_t));
1175 } 1867 }
1176 else 1868 else
1177#endif 1869#endif
1870 {
1871 /* win32 people keep sending patches that change this write() to send() */
1872 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1873 /* so when you think this write should be a send instead, please find out */
1874 /* where your send() is from - it's definitely not the microsoft send, and */
1875 /* tell me. thank you. */
1178 write (evpipe [1], &old_errno, 1); 1876 write (evpipe [1], &(evpipe [1]), 1);
1877 }
1179 1878
1180 errno = old_errno; 1879 errno = old_errno;
1181 } 1880 }
1182} 1881}
1183 1882
1184/* called whenever the libev signal pipe */ 1883/* called whenever the libev signal pipe */
1185/* got some events (signal, async) */ 1884/* got some events (signal, async) */
1186static void 1885static void
1187pipecb (EV_P_ ev_io *iow, int revents) 1886pipecb (EV_P_ ev_io *iow, int revents)
1188{ 1887{
1888 int i;
1889
1890 if (revents & EV_READ)
1891 {
1189#if EV_USE_EVENTFD 1892#if EV_USE_EVENTFD
1190 if (evfd >= 0) 1893 if (evfd >= 0)
1191 { 1894 {
1192 uint64_t counter; 1895 uint64_t counter;
1193 read (evfd, &counter, sizeof (uint64_t)); 1896 read (evfd, &counter, sizeof (uint64_t));
1194 } 1897 }
1195 else 1898 else
1196#endif 1899#endif
1197 { 1900 {
1198 char dummy; 1901 char dummy;
1902 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1199 read (evpipe [0], &dummy, 1); 1903 read (evpipe [0], &dummy, 1);
1904 }
1905 }
1906
1907 pipe_write_skipped = 0;
1908
1909#if EV_SIGNAL_ENABLE
1910 if (sig_pending)
1200 } 1911 {
1912 sig_pending = 0;
1201 1913
1202 if (gotsig && ev_is_default_loop (EV_A)) 1914 for (i = EV_NSIG - 1; i--; )
1203 { 1915 if (expect_false (signals [i].pending))
1204 int signum;
1205 gotsig = 0;
1206
1207 for (signum = signalmax; signum--; )
1208 if (signals [signum].gotsig)
1209 ev_feed_signal_event (EV_A_ signum + 1); 1916 ev_feed_signal_event (EV_A_ i + 1);
1210 } 1917 }
1918#endif
1211 1919
1212#if EV_ASYNC_ENABLE 1920#if EV_ASYNC_ENABLE
1213 if (gotasync) 1921 if (async_pending)
1214 { 1922 {
1215 int i; 1923 async_pending = 0;
1216 gotasync = 0;
1217 1924
1218 for (i = asynccnt; i--; ) 1925 for (i = asynccnt; i--; )
1219 if (asyncs [i]->sent) 1926 if (asyncs [i]->sent)
1220 { 1927 {
1221 asyncs [i]->sent = 0; 1928 asyncs [i]->sent = 0;
… …
1225#endif 1932#endif
1226} 1933}
1227 1934
1228/*****************************************************************************/ 1935/*****************************************************************************/
1229 1936
1937void
1938ev_feed_signal (int signum)
1939{
1940#if EV_MULTIPLICITY
1941 EV_P = signals [signum - 1].loop;
1942
1943 if (!EV_A)
1944 return;
1945#endif
1946
1947 if (!ev_active (&pipe_w))
1948 return;
1949
1950 signals [signum - 1].pending = 1;
1951 evpipe_write (EV_A_ &sig_pending);
1952}
1953
1230static void 1954static void
1231ev_sighandler (int signum) 1955ev_sighandler (int signum)
1232{ 1956{
1233#if EV_MULTIPLICITY
1234 struct ev_loop *loop = &default_loop_struct;
1235#endif
1236
1237#if _WIN32 1957#ifdef _WIN32
1238 signal (signum, ev_sighandler); 1958 signal (signum, ev_sighandler);
1239#endif 1959#endif
1240 1960
1241 signals [signum - 1].gotsig = 1; 1961 ev_feed_signal (signum);
1242 evpipe_write (EV_A_ &gotsig);
1243} 1962}
1244 1963
1245void noinline 1964void noinline
1246ev_feed_signal_event (EV_P_ int signum) 1965ev_feed_signal_event (EV_P_ int signum)
1247{ 1966{
1248 WL w; 1967 WL w;
1249 1968
1969 if (expect_false (signum <= 0 || signum > EV_NSIG))
1970 return;
1971
1972 --signum;
1973
1250#if EV_MULTIPLICITY 1974#if EV_MULTIPLICITY
1251 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1975 /* it is permissible to try to feed a signal to the wrong loop */
1252#endif 1976 /* or, likely more useful, feeding a signal nobody is waiting for */
1253 1977
1254 --signum; 1978 if (expect_false (signals [signum].loop != EV_A))
1255
1256 if (signum < 0 || signum >= signalmax)
1257 return; 1979 return;
1980#endif
1258 1981
1259 signals [signum].gotsig = 0; 1982 signals [signum].pending = 0;
1260 1983
1261 for (w = signals [signum].head; w; w = w->next) 1984 for (w = signals [signum].head; w; w = w->next)
1262 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1985 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1263} 1986}
1264 1987
1265#if EV_USE_SIGNALFD 1988#if EV_USE_SIGNALFD
1266static void 1989static void
1267sigfdcb (EV_P_ ev_io *iow, int revents) 1990sigfdcb (EV_P_ ev_io *iow, int revents)
1268{ 1991{
1269 struct signalfd_siginfo si[4], *sip; 1992 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1270 1993
1271 for (;;) 1994 for (;;)
1272 { 1995 {
1273 ssize_t res = read (sigfd, si, sizeof (si)); 1996 ssize_t res = read (sigfd, si, sizeof (si));
1274 1997
… …
1280 break; 2003 break;
1281 } 2004 }
1282} 2005}
1283#endif 2006#endif
1284 2007
2008#endif
2009
1285/*****************************************************************************/ 2010/*****************************************************************************/
1286 2011
2012#if EV_CHILD_ENABLE
1287static WL childs [EV_PID_HASHSIZE]; 2013static WL childs [EV_PID_HASHSIZE];
1288
1289#ifndef _WIN32
1290 2014
1291static ev_signal childev; 2015static ev_signal childev;
1292 2016
1293#ifndef WIFCONTINUED 2017#ifndef WIFCONTINUED
1294# define WIFCONTINUED(status) 0 2018# define WIFCONTINUED(status) 0
… …
1299child_reap (EV_P_ int chain, int pid, int status) 2023child_reap (EV_P_ int chain, int pid, int status)
1300{ 2024{
1301 ev_child *w; 2025 ev_child *w;
1302 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2026 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1303 2027
1304 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2028 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1305 { 2029 {
1306 if ((w->pid == pid || !w->pid) 2030 if ((w->pid == pid || !w->pid)
1307 && (!traced || (w->flags & 1))) 2031 && (!traced || (w->flags & 1)))
1308 { 2032 {
1309 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2033 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1334 /* make sure we are called again until all children have been reaped */ 2058 /* make sure we are called again until all children have been reaped */
1335 /* we need to do it this way so that the callback gets called before we continue */ 2059 /* we need to do it this way so that the callback gets called before we continue */
1336 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2060 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1337 2061
1338 child_reap (EV_A_ pid, pid, status); 2062 child_reap (EV_A_ pid, pid, status);
1339 if (EV_PID_HASHSIZE > 1) 2063 if ((EV_PID_HASHSIZE) > 1)
1340 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2064 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1341} 2065}
1342 2066
1343#endif 2067#endif
1344 2068
1345/*****************************************************************************/ 2069/*****************************************************************************/
1346 2070
2071#if EV_USE_IOCP
2072# include "ev_iocp.c"
2073#endif
1347#if EV_USE_PORT 2074#if EV_USE_PORT
1348# include "ev_port.c" 2075# include "ev_port.c"
1349#endif 2076#endif
1350#if EV_USE_KQUEUE 2077#if EV_USE_KQUEUE
1351# include "ev_kqueue.c" 2078# include "ev_kqueue.c"
… …
1358#endif 2085#endif
1359#if EV_USE_SELECT 2086#if EV_USE_SELECT
1360# include "ev_select.c" 2087# include "ev_select.c"
1361#endif 2088#endif
1362 2089
1363int 2090int ecb_cold
1364ev_version_major (void) 2091ev_version_major (void)
1365{ 2092{
1366 return EV_VERSION_MAJOR; 2093 return EV_VERSION_MAJOR;
1367} 2094}
1368 2095
1369int 2096int ecb_cold
1370ev_version_minor (void) 2097ev_version_minor (void)
1371{ 2098{
1372 return EV_VERSION_MINOR; 2099 return EV_VERSION_MINOR;
1373} 2100}
1374 2101
1375/* return true if we are running with elevated privileges and should ignore env variables */ 2102/* return true if we are running with elevated privileges and should ignore env variables */
1376int inline_size 2103int inline_size ecb_cold
1377enable_secure (void) 2104enable_secure (void)
1378{ 2105{
1379#ifdef _WIN32 2106#ifdef _WIN32
1380 return 0; 2107 return 0;
1381#else 2108#else
1382 return getuid () != geteuid () 2109 return getuid () != geteuid ()
1383 || getgid () != getegid (); 2110 || getgid () != getegid ();
1384#endif 2111#endif
1385} 2112}
1386 2113
1387unsigned int 2114unsigned int ecb_cold
1388ev_supported_backends (void) 2115ev_supported_backends (void)
1389{ 2116{
1390 unsigned int flags = 0; 2117 unsigned int flags = 0;
1391 2118
1392 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2119 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1396 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2123 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1397 2124
1398 return flags; 2125 return flags;
1399} 2126}
1400 2127
1401unsigned int 2128unsigned int ecb_cold
1402ev_recommended_backends (void) 2129ev_recommended_backends (void)
1403{ 2130{
1404 unsigned int flags = ev_supported_backends (); 2131 unsigned int flags = ev_supported_backends ();
1405 2132
1406#ifndef __NetBSD__ 2133#ifndef __NetBSD__
… …
1411#ifdef __APPLE__ 2138#ifdef __APPLE__
1412 /* only select works correctly on that "unix-certified" platform */ 2139 /* only select works correctly on that "unix-certified" platform */
1413 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2140 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1414 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2141 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1415#endif 2142#endif
2143#ifdef __FreeBSD__
2144 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2145#endif
1416 2146
1417 return flags; 2147 return flags;
1418} 2148}
1419 2149
1420unsigned int 2150unsigned int ecb_cold
1421ev_embeddable_backends (void) 2151ev_embeddable_backends (void)
1422{ 2152{
1423 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2153 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1424 2154
1425 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2155 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1426 /* please fix it and tell me how to detect the fix */ 2156 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1427 flags &= ~EVBACKEND_EPOLL; 2157 flags &= ~EVBACKEND_EPOLL;
1428 2158
1429 return flags; 2159 return flags;
1430} 2160}
1431 2161
1432unsigned int 2162unsigned int
1433ev_backend (EV_P) 2163ev_backend (EV_P)
1434{ 2164{
1435 return backend; 2165 return backend;
1436} 2166}
1437 2167
1438#if EV_MINIMAL < 2 2168#if EV_FEATURE_API
1439unsigned int 2169unsigned int
1440ev_loop_count (EV_P) 2170ev_iteration (EV_P)
1441{ 2171{
1442 return loop_count; 2172 return loop_count;
1443} 2173}
1444 2174
1445unsigned int 2175unsigned int
1446ev_loop_depth (EV_P) 2176ev_depth (EV_P)
1447{ 2177{
1448 return loop_depth; 2178 return loop_depth;
1449} 2179}
1450 2180
1451void 2181void
… …
1470ev_userdata (EV_P) 2200ev_userdata (EV_P)
1471{ 2201{
1472 return userdata; 2202 return userdata;
1473} 2203}
1474 2204
2205void
1475void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2206ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1476{ 2207{
1477 invoke_cb = invoke_pending_cb; 2208 invoke_cb = invoke_pending_cb;
1478} 2209}
1479 2210
2211void
1480void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2212ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1481{ 2213{
1482 release_cb = release; 2214 release_cb = release;
1483 acquire_cb = acquire; 2215 acquire_cb = acquire;
1484} 2216}
1485#endif 2217#endif
1486 2218
1487/* initialise a loop structure, must be zero-initialised */ 2219/* initialise a loop structure, must be zero-initialised */
1488static void noinline 2220static void noinline ecb_cold
1489loop_init (EV_P_ unsigned int flags) 2221loop_init (EV_P_ unsigned int flags)
1490{ 2222{
1491 if (!backend) 2223 if (!backend)
1492 { 2224 {
2225 origflags = flags;
2226
1493#if EV_USE_REALTIME 2227#if EV_USE_REALTIME
1494 if (!have_realtime) 2228 if (!have_realtime)
1495 { 2229 {
1496 struct timespec ts; 2230 struct timespec ts;
1497 2231
… …
1508 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2242 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1509 have_monotonic = 1; 2243 have_monotonic = 1;
1510 } 2244 }
1511#endif 2245#endif
1512 2246
1513 ev_rt_now = ev_time ();
1514 mn_now = get_clock ();
1515 now_floor = mn_now;
1516 rtmn_diff = ev_rt_now - mn_now;
1517#if EV_MINIMAL < 2
1518 invoke_cb = ev_invoke_pending;
1519#endif
1520
1521 io_blocktime = 0.;
1522 timeout_blocktime = 0.;
1523 backend = 0;
1524 backend_fd = -1;
1525 gotasync = 0;
1526#if EV_USE_INOTIFY
1527 fs_fd = -2;
1528#endif
1529#if EV_USE_SIGNALFD
1530 sigfd = -2;
1531#endif
1532
1533 /* pid check not overridable via env */ 2247 /* pid check not overridable via env */
1534#ifndef _WIN32 2248#ifndef _WIN32
1535 if (flags & EVFLAG_FORKCHECK) 2249 if (flags & EVFLAG_FORKCHECK)
1536 curpid = getpid (); 2250 curpid = getpid ();
1537#endif 2251#endif
… …
1539 if (!(flags & EVFLAG_NOENV) 2253 if (!(flags & EVFLAG_NOENV)
1540 && !enable_secure () 2254 && !enable_secure ()
1541 && getenv ("LIBEV_FLAGS")) 2255 && getenv ("LIBEV_FLAGS"))
1542 flags = atoi (getenv ("LIBEV_FLAGS")); 2256 flags = atoi (getenv ("LIBEV_FLAGS"));
1543 2257
1544 if (!(flags & 0x0000ffffU)) 2258 ev_rt_now = ev_time ();
2259 mn_now = get_clock ();
2260 now_floor = mn_now;
2261 rtmn_diff = ev_rt_now - mn_now;
2262#if EV_FEATURE_API
2263 invoke_cb = ev_invoke_pending;
2264#endif
2265
2266 io_blocktime = 0.;
2267 timeout_blocktime = 0.;
2268 backend = 0;
2269 backend_fd = -1;
2270 sig_pending = 0;
2271#if EV_ASYNC_ENABLE
2272 async_pending = 0;
2273#endif
2274 pipe_write_skipped = 0;
2275 pipe_write_wanted = 0;
2276#if EV_USE_INOTIFY
2277 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2278#endif
2279#if EV_USE_SIGNALFD
2280 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2281#endif
2282
2283 if (!(flags & EVBACKEND_MASK))
1545 flags |= ev_recommended_backends (); 2284 flags |= ev_recommended_backends ();
1546 2285
2286#if EV_USE_IOCP
2287 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2288#endif
1547#if EV_USE_PORT 2289#if EV_USE_PORT
1548 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2290 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1549#endif 2291#endif
1550#if EV_USE_KQUEUE 2292#if EV_USE_KQUEUE
1551 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2293 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1560 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2302 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1561#endif 2303#endif
1562 2304
1563 ev_prepare_init (&pending_w, pendingcb); 2305 ev_prepare_init (&pending_w, pendingcb);
1564 2306
2307#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1565 ev_init (&pipe_w, pipecb); 2308 ev_init (&pipe_w, pipecb);
1566 ev_set_priority (&pipe_w, EV_MAXPRI); 2309 ev_set_priority (&pipe_w, EV_MAXPRI);
2310#endif
1567 } 2311 }
1568} 2312}
1569 2313
1570/* free up a loop structure */ 2314/* free up a loop structure */
1571static void noinline 2315void ecb_cold
1572loop_destroy (EV_P) 2316ev_loop_destroy (EV_P)
1573{ 2317{
1574 int i; 2318 int i;
2319
2320#if EV_MULTIPLICITY
2321 /* mimic free (0) */
2322 if (!EV_A)
2323 return;
2324#endif
2325
2326#if EV_CLEANUP_ENABLE
2327 /* queue cleanup watchers (and execute them) */
2328 if (expect_false (cleanupcnt))
2329 {
2330 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2331 EV_INVOKE_PENDING;
2332 }
2333#endif
2334
2335#if EV_CHILD_ENABLE
2336 if (ev_is_active (&childev))
2337 {
2338 ev_ref (EV_A); /* child watcher */
2339 ev_signal_stop (EV_A_ &childev);
2340 }
2341#endif
1575 2342
1576 if (ev_is_active (&pipe_w)) 2343 if (ev_is_active (&pipe_w))
1577 { 2344 {
1578 /*ev_ref (EV_A);*/ 2345 /*ev_ref (EV_A);*/
1579 /*ev_io_stop (EV_A_ &pipe_w);*/ 2346 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1583 close (evfd); 2350 close (evfd);
1584#endif 2351#endif
1585 2352
1586 if (evpipe [0] >= 0) 2353 if (evpipe [0] >= 0)
1587 { 2354 {
1588 close (evpipe [0]); 2355 EV_WIN32_CLOSE_FD (evpipe [0]);
1589 close (evpipe [1]); 2356 EV_WIN32_CLOSE_FD (evpipe [1]);
1590 } 2357 }
1591 } 2358 }
1592 2359
1593#if EV_USE_SIGNALFD 2360#if EV_USE_SIGNALFD
1594 if (ev_is_active (&sigfd_w)) 2361 if (ev_is_active (&sigfd_w))
1595 {
1596 /*ev_ref (EV_A);*/
1597 /*ev_io_stop (EV_A_ &sigfd_w);*/
1598
1599 close (sigfd); 2362 close (sigfd);
1600 }
1601#endif 2363#endif
1602 2364
1603#if EV_USE_INOTIFY 2365#if EV_USE_INOTIFY
1604 if (fs_fd >= 0) 2366 if (fs_fd >= 0)
1605 close (fs_fd); 2367 close (fs_fd);
1606#endif 2368#endif
1607 2369
1608 if (backend_fd >= 0) 2370 if (backend_fd >= 0)
1609 close (backend_fd); 2371 close (backend_fd);
1610 2372
2373#if EV_USE_IOCP
2374 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2375#endif
1611#if EV_USE_PORT 2376#if EV_USE_PORT
1612 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2377 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1613#endif 2378#endif
1614#if EV_USE_KQUEUE 2379#if EV_USE_KQUEUE
1615 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2380 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1630#if EV_IDLE_ENABLE 2395#if EV_IDLE_ENABLE
1631 array_free (idle, [i]); 2396 array_free (idle, [i]);
1632#endif 2397#endif
1633 } 2398 }
1634 2399
1635 ev_free (anfds); anfdmax = 0; 2400 ev_free (anfds); anfds = 0; anfdmax = 0;
1636 2401
1637 /* have to use the microsoft-never-gets-it-right macro */ 2402 /* have to use the microsoft-never-gets-it-right macro */
1638 array_free (rfeed, EMPTY); 2403 array_free (rfeed, EMPTY);
1639 array_free (fdchange, EMPTY); 2404 array_free (fdchange, EMPTY);
1640 array_free (timer, EMPTY); 2405 array_free (timer, EMPTY);
… …
1642 array_free (periodic, EMPTY); 2407 array_free (periodic, EMPTY);
1643#endif 2408#endif
1644#if EV_FORK_ENABLE 2409#if EV_FORK_ENABLE
1645 array_free (fork, EMPTY); 2410 array_free (fork, EMPTY);
1646#endif 2411#endif
2412#if EV_CLEANUP_ENABLE
2413 array_free (cleanup, EMPTY);
2414#endif
1647 array_free (prepare, EMPTY); 2415 array_free (prepare, EMPTY);
1648 array_free (check, EMPTY); 2416 array_free (check, EMPTY);
1649#if EV_ASYNC_ENABLE 2417#if EV_ASYNC_ENABLE
1650 array_free (async, EMPTY); 2418 array_free (async, EMPTY);
1651#endif 2419#endif
1652 2420
1653 backend = 0; 2421 backend = 0;
2422
2423#if EV_MULTIPLICITY
2424 if (ev_is_default_loop (EV_A))
2425#endif
2426 ev_default_loop_ptr = 0;
2427#if EV_MULTIPLICITY
2428 else
2429 ev_free (EV_A);
2430#endif
1654} 2431}
1655 2432
1656#if EV_USE_INOTIFY 2433#if EV_USE_INOTIFY
1657inline_size void infy_fork (EV_P); 2434inline_size void infy_fork (EV_P);
1658#endif 2435#endif
… …
1673 infy_fork (EV_A); 2450 infy_fork (EV_A);
1674#endif 2451#endif
1675 2452
1676 if (ev_is_active (&pipe_w)) 2453 if (ev_is_active (&pipe_w))
1677 { 2454 {
1678 /* this "locks" the handlers against writing to the pipe */ 2455 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1679 /* while we modify the fd vars */
1680 gotsig = 1;
1681#if EV_ASYNC_ENABLE
1682 gotasync = 1;
1683#endif
1684 2456
1685 ev_ref (EV_A); 2457 ev_ref (EV_A);
1686 ev_io_stop (EV_A_ &pipe_w); 2458 ev_io_stop (EV_A_ &pipe_w);
1687 2459
1688#if EV_USE_EVENTFD 2460#if EV_USE_EVENTFD
… …
1690 close (evfd); 2462 close (evfd);
1691#endif 2463#endif
1692 2464
1693 if (evpipe [0] >= 0) 2465 if (evpipe [0] >= 0)
1694 { 2466 {
1695 close (evpipe [0]); 2467 EV_WIN32_CLOSE_FD (evpipe [0]);
1696 close (evpipe [1]); 2468 EV_WIN32_CLOSE_FD (evpipe [1]);
1697 } 2469 }
1698 2470
2471#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1699 evpipe_init (EV_A); 2472 evpipe_init (EV_A);
1700 /* now iterate over everything, in case we missed something */ 2473 /* now iterate over everything, in case we missed something */
1701 pipecb (EV_A_ &pipe_w, EV_READ); 2474 pipecb (EV_A_ &pipe_w, EV_READ);
2475#endif
1702 } 2476 }
1703 2477
1704 postfork = 0; 2478 postfork = 0;
1705} 2479}
1706 2480
1707#if EV_MULTIPLICITY 2481#if EV_MULTIPLICITY
1708 2482
1709struct ev_loop * 2483struct ev_loop * ecb_cold
1710ev_loop_new (unsigned int flags) 2484ev_loop_new (unsigned int flags)
1711{ 2485{
1712 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2486 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1713 2487
1714 memset (loop, 0, sizeof (struct ev_loop)); 2488 memset (EV_A, 0, sizeof (struct ev_loop));
1715 loop_init (EV_A_ flags); 2489 loop_init (EV_A_ flags);
1716 2490
1717 if (ev_backend (EV_A)) 2491 if (ev_backend (EV_A))
1718 return loop; 2492 return EV_A;
1719 2493
2494 ev_free (EV_A);
1720 return 0; 2495 return 0;
1721} 2496}
1722 2497
1723void
1724ev_loop_destroy (EV_P)
1725{
1726 loop_destroy (EV_A);
1727 ev_free (loop);
1728}
1729
1730void
1731ev_loop_fork (EV_P)
1732{
1733 postfork = 1; /* must be in line with ev_default_fork */
1734}
1735#endif /* multiplicity */ 2498#endif /* multiplicity */
1736 2499
1737#if EV_VERIFY 2500#if EV_VERIFY
1738static void noinline 2501static void noinline ecb_cold
1739verify_watcher (EV_P_ W w) 2502verify_watcher (EV_P_ W w)
1740{ 2503{
1741 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2504 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1742 2505
1743 if (w->pending) 2506 if (w->pending)
1744 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2507 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1745} 2508}
1746 2509
1747static void noinline 2510static void noinline ecb_cold
1748verify_heap (EV_P_ ANHE *heap, int N) 2511verify_heap (EV_P_ ANHE *heap, int N)
1749{ 2512{
1750 int i; 2513 int i;
1751 2514
1752 for (i = HEAP0; i < N + HEAP0; ++i) 2515 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1757 2520
1758 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2521 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1759 } 2522 }
1760} 2523}
1761 2524
1762static void noinline 2525static void noinline ecb_cold
1763array_verify (EV_P_ W *ws, int cnt) 2526array_verify (EV_P_ W *ws, int cnt)
1764{ 2527{
1765 while (cnt--) 2528 while (cnt--)
1766 { 2529 {
1767 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2530 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1768 verify_watcher (EV_A_ ws [cnt]); 2531 verify_watcher (EV_A_ ws [cnt]);
1769 } 2532 }
1770} 2533}
1771#endif 2534#endif
1772 2535
1773#if EV_MINIMAL < 2 2536#if EV_FEATURE_API
1774void 2537void ecb_cold
1775ev_loop_verify (EV_P) 2538ev_verify (EV_P)
1776{ 2539{
1777#if EV_VERIFY 2540#if EV_VERIFY
1778 int i; 2541 int i;
1779 WL w; 2542 WL w;
1780 2543
… …
1814#if EV_FORK_ENABLE 2577#if EV_FORK_ENABLE
1815 assert (forkmax >= forkcnt); 2578 assert (forkmax >= forkcnt);
1816 array_verify (EV_A_ (W *)forks, forkcnt); 2579 array_verify (EV_A_ (W *)forks, forkcnt);
1817#endif 2580#endif
1818 2581
2582#if EV_CLEANUP_ENABLE
2583 assert (cleanupmax >= cleanupcnt);
2584 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2585#endif
2586
1819#if EV_ASYNC_ENABLE 2587#if EV_ASYNC_ENABLE
1820 assert (asyncmax >= asynccnt); 2588 assert (asyncmax >= asynccnt);
1821 array_verify (EV_A_ (W *)asyncs, asynccnt); 2589 array_verify (EV_A_ (W *)asyncs, asynccnt);
1822#endif 2590#endif
1823 2591
2592#if EV_PREPARE_ENABLE
1824 assert (preparemax >= preparecnt); 2593 assert (preparemax >= preparecnt);
1825 array_verify (EV_A_ (W *)prepares, preparecnt); 2594 array_verify (EV_A_ (W *)prepares, preparecnt);
2595#endif
1826 2596
2597#if EV_CHECK_ENABLE
1827 assert (checkmax >= checkcnt); 2598 assert (checkmax >= checkcnt);
1828 array_verify (EV_A_ (W *)checks, checkcnt); 2599 array_verify (EV_A_ (W *)checks, checkcnt);
2600#endif
1829 2601
1830# if 0 2602# if 0
2603#if EV_CHILD_ENABLE
1831 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2604 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1832 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2605 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2606#endif
1833# endif 2607# endif
1834#endif 2608#endif
1835} 2609}
1836#endif 2610#endif
1837 2611
1838#if EV_MULTIPLICITY 2612#if EV_MULTIPLICITY
1839struct ev_loop * 2613struct ev_loop * ecb_cold
1840ev_default_loop_init (unsigned int flags)
1841#else 2614#else
1842int 2615int
2616#endif
1843ev_default_loop (unsigned int flags) 2617ev_default_loop (unsigned int flags)
1844#endif
1845{ 2618{
1846 if (!ev_default_loop_ptr) 2619 if (!ev_default_loop_ptr)
1847 { 2620 {
1848#if EV_MULTIPLICITY 2621#if EV_MULTIPLICITY
1849 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2622 EV_P = ev_default_loop_ptr = &default_loop_struct;
1850#else 2623#else
1851 ev_default_loop_ptr = 1; 2624 ev_default_loop_ptr = 1;
1852#endif 2625#endif
1853 2626
1854 loop_init (EV_A_ flags); 2627 loop_init (EV_A_ flags);
1855 2628
1856 if (ev_backend (EV_A)) 2629 if (ev_backend (EV_A))
1857 { 2630 {
1858#ifndef _WIN32 2631#if EV_CHILD_ENABLE
1859 ev_signal_init (&childev, childcb, SIGCHLD); 2632 ev_signal_init (&childev, childcb, SIGCHLD);
1860 ev_set_priority (&childev, EV_MAXPRI); 2633 ev_set_priority (&childev, EV_MAXPRI);
1861 ev_signal_start (EV_A_ &childev); 2634 ev_signal_start (EV_A_ &childev);
1862 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2635 ev_unref (EV_A); /* child watcher should not keep loop alive */
1863#endif 2636#endif
… …
1868 2641
1869 return ev_default_loop_ptr; 2642 return ev_default_loop_ptr;
1870} 2643}
1871 2644
1872void 2645void
1873ev_default_destroy (void) 2646ev_loop_fork (EV_P)
1874{ 2647{
1875#if EV_MULTIPLICITY
1876 struct ev_loop *loop = ev_default_loop_ptr;
1877#endif
1878
1879 ev_default_loop_ptr = 0;
1880
1881#ifndef _WIN32
1882 ev_ref (EV_A); /* child watcher */
1883 ev_signal_stop (EV_A_ &childev);
1884#endif
1885
1886 loop_destroy (EV_A);
1887}
1888
1889void
1890ev_default_fork (void)
1891{
1892#if EV_MULTIPLICITY
1893 struct ev_loop *loop = ev_default_loop_ptr;
1894#endif
1895
1896 postfork = 1; /* must be in line with ev_loop_fork */ 2648 postfork = 1; /* must be in line with ev_default_fork */
1897} 2649}
1898 2650
1899/*****************************************************************************/ 2651/*****************************************************************************/
1900 2652
1901void 2653void
… …
1923 2675
1924 for (pri = NUMPRI; pri--; ) 2676 for (pri = NUMPRI; pri--; )
1925 while (pendingcnt [pri]) 2677 while (pendingcnt [pri])
1926 { 2678 {
1927 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2679 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1928
1929 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1930 /* ^ this is no longer true, as pending_w could be here */
1931 2680
1932 p->w->pending = 0; 2681 p->w->pending = 0;
1933 EV_CB_INVOKE (p->w, p->events); 2682 EV_CB_INVOKE (p->w, p->events);
1934 EV_FREQUENT_CHECK; 2683 EV_FREQUENT_CHECK;
1935 } 2684 }
… …
1992 EV_FREQUENT_CHECK; 2741 EV_FREQUENT_CHECK;
1993 feed_reverse (EV_A_ (W)w); 2742 feed_reverse (EV_A_ (W)w);
1994 } 2743 }
1995 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2744 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1996 2745
1997 feed_reverse_done (EV_A_ EV_TIMEOUT); 2746 feed_reverse_done (EV_A_ EV_TIMER);
1998 } 2747 }
1999} 2748}
2000 2749
2001#if EV_PERIODIC_ENABLE 2750#if EV_PERIODIC_ENABLE
2751
2752static void noinline
2753periodic_recalc (EV_P_ ev_periodic *w)
2754{
2755 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2756 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2757
2758 /* the above almost always errs on the low side */
2759 while (at <= ev_rt_now)
2760 {
2761 ev_tstamp nat = at + w->interval;
2762
2763 /* when resolution fails us, we use ev_rt_now */
2764 if (expect_false (nat == at))
2765 {
2766 at = ev_rt_now;
2767 break;
2768 }
2769
2770 at = nat;
2771 }
2772
2773 ev_at (w) = at;
2774}
2775
2002/* make periodics pending */ 2776/* make periodics pending */
2003inline_size void 2777inline_size void
2004periodics_reify (EV_P) 2778periodics_reify (EV_P)
2005{ 2779{
2006 EV_FREQUENT_CHECK; 2780 EV_FREQUENT_CHECK;
… …
2025 ANHE_at_cache (periodics [HEAP0]); 2799 ANHE_at_cache (periodics [HEAP0]);
2026 downheap (periodics, periodiccnt, HEAP0); 2800 downheap (periodics, periodiccnt, HEAP0);
2027 } 2801 }
2028 else if (w->interval) 2802 else if (w->interval)
2029 { 2803 {
2030 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2804 periodic_recalc (EV_A_ w);
2031 /* if next trigger time is not sufficiently in the future, put it there */
2032 /* this might happen because of floating point inexactness */
2033 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2034 {
2035 ev_at (w) += w->interval;
2036
2037 /* if interval is unreasonably low we might still have a time in the past */
2038 /* so correct this. this will make the periodic very inexact, but the user */
2039 /* has effectively asked to get triggered more often than possible */
2040 if (ev_at (w) < ev_rt_now)
2041 ev_at (w) = ev_rt_now;
2042 }
2043
2044 ANHE_at_cache (periodics [HEAP0]); 2805 ANHE_at_cache (periodics [HEAP0]);
2045 downheap (periodics, periodiccnt, HEAP0); 2806 downheap (periodics, periodiccnt, HEAP0);
2046 } 2807 }
2047 else 2808 else
2048 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2809 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2055 feed_reverse_done (EV_A_ EV_PERIODIC); 2816 feed_reverse_done (EV_A_ EV_PERIODIC);
2056 } 2817 }
2057} 2818}
2058 2819
2059/* simply recalculate all periodics */ 2820/* simply recalculate all periodics */
2060/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2821/* TODO: maybe ensure that at least one event happens when jumping forward? */
2061static void noinline 2822static void noinline ecb_cold
2062periodics_reschedule (EV_P) 2823periodics_reschedule (EV_P)
2063{ 2824{
2064 int i; 2825 int i;
2065 2826
2066 /* adjust periodics after time jump */ 2827 /* adjust periodics after time jump */
… …
2069 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2830 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2070 2831
2071 if (w->reschedule_cb) 2832 if (w->reschedule_cb)
2072 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2833 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073 else if (w->interval) 2834 else if (w->interval)
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2835 periodic_recalc (EV_A_ w);
2075 2836
2076 ANHE_at_cache (periodics [i]); 2837 ANHE_at_cache (periodics [i]);
2077 } 2838 }
2078 2839
2079 reheap (periodics, periodiccnt); 2840 reheap (periodics, periodiccnt);
2080} 2841}
2081#endif 2842#endif
2082 2843
2083/* adjust all timers by a given offset */ 2844/* adjust all timers by a given offset */
2084static void noinline 2845static void noinline ecb_cold
2085timers_reschedule (EV_P_ ev_tstamp adjust) 2846timers_reschedule (EV_P_ ev_tstamp adjust)
2086{ 2847{
2087 int i; 2848 int i;
2088 2849
2089 for (i = 0; i < timercnt; ++i) 2850 for (i = 0; i < timercnt; ++i)
… …
2093 ANHE_at_cache (*he); 2854 ANHE_at_cache (*he);
2094 } 2855 }
2095} 2856}
2096 2857
2097/* fetch new monotonic and realtime times from the kernel */ 2858/* fetch new monotonic and realtime times from the kernel */
2098/* also detetc if there was a timejump, and act accordingly */ 2859/* also detect if there was a timejump, and act accordingly */
2099inline_speed void 2860inline_speed void
2100time_update (EV_P_ ev_tstamp max_block) 2861time_update (EV_P_ ev_tstamp max_block)
2101{ 2862{
2102#if EV_USE_MONOTONIC 2863#if EV_USE_MONOTONIC
2103 if (expect_true (have_monotonic)) 2864 if (expect_true (have_monotonic))
… …
2126 * doesn't hurt either as we only do this on time-jumps or 2887 * doesn't hurt either as we only do this on time-jumps or
2127 * in the unlikely event of having been preempted here. 2888 * in the unlikely event of having been preempted here.
2128 */ 2889 */
2129 for (i = 4; --i; ) 2890 for (i = 4; --i; )
2130 { 2891 {
2892 ev_tstamp diff;
2131 rtmn_diff = ev_rt_now - mn_now; 2893 rtmn_diff = ev_rt_now - mn_now;
2132 2894
2895 diff = odiff - rtmn_diff;
2896
2133 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2897 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2134 return; /* all is well */ 2898 return; /* all is well */
2135 2899
2136 ev_rt_now = ev_time (); 2900 ev_rt_now = ev_time ();
2137 mn_now = get_clock (); 2901 mn_now = get_clock ();
2138 now_floor = mn_now; 2902 now_floor = mn_now;
… …
2161 mn_now = ev_rt_now; 2925 mn_now = ev_rt_now;
2162 } 2926 }
2163} 2927}
2164 2928
2165void 2929void
2166ev_loop (EV_P_ int flags) 2930ev_run (EV_P_ int flags)
2167{ 2931{
2168#if EV_MINIMAL < 2 2932#if EV_FEATURE_API
2169 ++loop_depth; 2933 ++loop_depth;
2170#endif 2934#endif
2171 2935
2172 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2936 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2173 2937
2174 loop_done = EVUNLOOP_CANCEL; 2938 loop_done = EVBREAK_CANCEL;
2175 2939
2176 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2940 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2177 2941
2178 do 2942 do
2179 { 2943 {
2180#if EV_VERIFY >= 2 2944#if EV_VERIFY >= 2
2181 ev_loop_verify (EV_A); 2945 ev_verify (EV_A);
2182#endif 2946#endif
2183 2947
2184#ifndef _WIN32 2948#ifndef _WIN32
2185 if (expect_false (curpid)) /* penalise the forking check even more */ 2949 if (expect_false (curpid)) /* penalise the forking check even more */
2186 if (expect_false (getpid () != curpid)) 2950 if (expect_false (getpid () != curpid))
… …
2198 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2962 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2199 EV_INVOKE_PENDING; 2963 EV_INVOKE_PENDING;
2200 } 2964 }
2201#endif 2965#endif
2202 2966
2967#if EV_PREPARE_ENABLE
2203 /* queue prepare watchers (and execute them) */ 2968 /* queue prepare watchers (and execute them) */
2204 if (expect_false (preparecnt)) 2969 if (expect_false (preparecnt))
2205 { 2970 {
2206 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2971 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2207 EV_INVOKE_PENDING; 2972 EV_INVOKE_PENDING;
2208 } 2973 }
2974#endif
2209 2975
2210 if (expect_false (loop_done)) 2976 if (expect_false (loop_done))
2211 break; 2977 break;
2212 2978
2213 /* we might have forked, so reify kernel state if necessary */ 2979 /* we might have forked, so reify kernel state if necessary */
… …
2220 /* calculate blocking time */ 2986 /* calculate blocking time */
2221 { 2987 {
2222 ev_tstamp waittime = 0.; 2988 ev_tstamp waittime = 0.;
2223 ev_tstamp sleeptime = 0.; 2989 ev_tstamp sleeptime = 0.;
2224 2990
2991 /* remember old timestamp for io_blocktime calculation */
2992 ev_tstamp prev_mn_now = mn_now;
2993
2994 /* update time to cancel out callback processing overhead */
2995 time_update (EV_A_ 1e100);
2996
2997 /* from now on, we want a pipe-wake-up */
2998 pipe_write_wanted = 1;
2999
3000 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3001
2225 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3002 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2226 { 3003 {
2227 /* remember old timestamp for io_blocktime calculation */
2228 ev_tstamp prev_mn_now = mn_now;
2229
2230 /* update time to cancel out callback processing overhead */
2231 time_update (EV_A_ 1e100);
2232
2233 waittime = MAX_BLOCKTIME; 3004 waittime = MAX_BLOCKTIME;
2234 3005
2235 if (timercnt) 3006 if (timercnt)
2236 { 3007 {
2237 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3008 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2238 if (waittime > to) waittime = to; 3009 if (waittime > to) waittime = to;
2239 } 3010 }
2240 3011
2241#if EV_PERIODIC_ENABLE 3012#if EV_PERIODIC_ENABLE
2242 if (periodiccnt) 3013 if (periodiccnt)
2243 { 3014 {
2244 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3015 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2245 if (waittime > to) waittime = to; 3016 if (waittime > to) waittime = to;
2246 } 3017 }
2247#endif 3018#endif
2248 3019
2249 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3020 /* don't let timeouts decrease the waittime below timeout_blocktime */
2250 if (expect_false (waittime < timeout_blocktime)) 3021 if (expect_false (waittime < timeout_blocktime))
2251 waittime = timeout_blocktime; 3022 waittime = timeout_blocktime;
3023
3024 /* at this point, we NEED to wait, so we have to ensure */
3025 /* to pass a minimum nonzero value to the backend */
3026 if (expect_false (waittime < backend_mintime))
3027 waittime = backend_mintime;
2252 3028
2253 /* extra check because io_blocktime is commonly 0 */ 3029 /* extra check because io_blocktime is commonly 0 */
2254 if (expect_false (io_blocktime)) 3030 if (expect_false (io_blocktime))
2255 { 3031 {
2256 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3032 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2257 3033
2258 if (sleeptime > waittime - backend_fudge) 3034 if (sleeptime > waittime - backend_mintime)
2259 sleeptime = waittime - backend_fudge; 3035 sleeptime = waittime - backend_mintime;
2260 3036
2261 if (expect_true (sleeptime > 0.)) 3037 if (expect_true (sleeptime > 0.))
2262 { 3038 {
2263 ev_sleep (sleeptime); 3039 ev_sleep (sleeptime);
2264 waittime -= sleeptime; 3040 waittime -= sleeptime;
2265 } 3041 }
2266 } 3042 }
2267 } 3043 }
2268 3044
2269#if EV_MINIMAL < 2 3045#if EV_FEATURE_API
2270 ++loop_count; 3046 ++loop_count;
2271#endif 3047#endif
2272 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3048 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2273 backend_poll (EV_A_ waittime); 3049 backend_poll (EV_A_ waittime);
2274 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3050 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3051
3052 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3053
3054 if (pipe_write_skipped)
3055 {
3056 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3057 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3058 }
3059
2275 3060
2276 /* update ev_rt_now, do magic */ 3061 /* update ev_rt_now, do magic */
2277 time_update (EV_A_ waittime + sleeptime); 3062 time_update (EV_A_ waittime + sleeptime);
2278 } 3063 }
2279 3064
… …
2286#if EV_IDLE_ENABLE 3071#if EV_IDLE_ENABLE
2287 /* queue idle watchers unless other events are pending */ 3072 /* queue idle watchers unless other events are pending */
2288 idle_reify (EV_A); 3073 idle_reify (EV_A);
2289#endif 3074#endif
2290 3075
3076#if EV_CHECK_ENABLE
2291 /* queue check watchers, to be executed first */ 3077 /* queue check watchers, to be executed first */
2292 if (expect_false (checkcnt)) 3078 if (expect_false (checkcnt))
2293 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3079 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3080#endif
2294 3081
2295 EV_INVOKE_PENDING; 3082 EV_INVOKE_PENDING;
2296 } 3083 }
2297 while (expect_true ( 3084 while (expect_true (
2298 activecnt 3085 activecnt
2299 && !loop_done 3086 && !loop_done
2300 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3087 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2301 )); 3088 ));
2302 3089
2303 if (loop_done == EVUNLOOP_ONE) 3090 if (loop_done == EVBREAK_ONE)
2304 loop_done = EVUNLOOP_CANCEL; 3091 loop_done = EVBREAK_CANCEL;
2305 3092
2306#if EV_MINIMAL < 2 3093#if EV_FEATURE_API
2307 --loop_depth; 3094 --loop_depth;
2308#endif 3095#endif
2309} 3096}
2310 3097
2311void 3098void
2312ev_unloop (EV_P_ int how) 3099ev_break (EV_P_ int how)
2313{ 3100{
2314 loop_done = how; 3101 loop_done = how;
2315} 3102}
2316 3103
2317void 3104void
… …
2364inline_size void 3151inline_size void
2365wlist_del (WL *head, WL elem) 3152wlist_del (WL *head, WL elem)
2366{ 3153{
2367 while (*head) 3154 while (*head)
2368 { 3155 {
2369 if (*head == elem) 3156 if (expect_true (*head == elem))
2370 { 3157 {
2371 *head = elem->next; 3158 *head = elem->next;
2372 return; 3159 break;
2373 } 3160 }
2374 3161
2375 head = &(*head)->next; 3162 head = &(*head)->next;
2376 } 3163 }
2377} 3164}
… …
2437 3224
2438 if (expect_false (ev_is_active (w))) 3225 if (expect_false (ev_is_active (w)))
2439 return; 3226 return;
2440 3227
2441 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3228 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2442 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3229 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2443 3230
2444 EV_FREQUENT_CHECK; 3231 EV_FREQUENT_CHECK;
2445 3232
2446 ev_start (EV_A_ (W)w, 1); 3233 ev_start (EV_A_ (W)w, 1);
2447 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3234 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2465 EV_FREQUENT_CHECK; 3252 EV_FREQUENT_CHECK;
2466 3253
2467 wlist_del (&anfds[w->fd].head, (WL)w); 3254 wlist_del (&anfds[w->fd].head, (WL)w);
2468 ev_stop (EV_A_ (W)w); 3255 ev_stop (EV_A_ (W)w);
2469 3256
2470 fd_change (EV_A_ w->fd, 1); 3257 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2471 3258
2472 EV_FREQUENT_CHECK; 3259 EV_FREQUENT_CHECK;
2473} 3260}
2474 3261
2475void noinline 3262void noinline
… …
2517 timers [active] = timers [timercnt + HEAP0]; 3304 timers [active] = timers [timercnt + HEAP0];
2518 adjustheap (timers, timercnt, active); 3305 adjustheap (timers, timercnt, active);
2519 } 3306 }
2520 } 3307 }
2521 3308
2522 EV_FREQUENT_CHECK;
2523
2524 ev_at (w) -= mn_now; 3309 ev_at (w) -= mn_now;
2525 3310
2526 ev_stop (EV_A_ (W)w); 3311 ev_stop (EV_A_ (W)w);
3312
3313 EV_FREQUENT_CHECK;
2527} 3314}
2528 3315
2529void noinline 3316void noinline
2530ev_timer_again (EV_P_ ev_timer *w) 3317ev_timer_again (EV_P_ ev_timer *w)
2531{ 3318{
2532 EV_FREQUENT_CHECK; 3319 EV_FREQUENT_CHECK;
3320
3321 clear_pending (EV_A_ (W)w);
2533 3322
2534 if (ev_is_active (w)) 3323 if (ev_is_active (w))
2535 { 3324 {
2536 if (w->repeat) 3325 if (w->repeat)
2537 { 3326 {
… …
2567 if (w->reschedule_cb) 3356 if (w->reschedule_cb)
2568 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3357 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2569 else if (w->interval) 3358 else if (w->interval)
2570 { 3359 {
2571 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3360 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2572 /* this formula differs from the one in periodic_reify because we do not always round up */ 3361 periodic_recalc (EV_A_ w);
2573 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2574 } 3362 }
2575 else 3363 else
2576 ev_at (w) = w->offset; 3364 ev_at (w) = w->offset;
2577 3365
2578 EV_FREQUENT_CHECK; 3366 EV_FREQUENT_CHECK;
… …
2610 periodics [active] = periodics [periodiccnt + HEAP0]; 3398 periodics [active] = periodics [periodiccnt + HEAP0];
2611 adjustheap (periodics, periodiccnt, active); 3399 adjustheap (periodics, periodiccnt, active);
2612 } 3400 }
2613 } 3401 }
2614 3402
2615 EV_FREQUENT_CHECK;
2616
2617 ev_stop (EV_A_ (W)w); 3403 ev_stop (EV_A_ (W)w);
3404
3405 EV_FREQUENT_CHECK;
2618} 3406}
2619 3407
2620void noinline 3408void noinline
2621ev_periodic_again (EV_P_ ev_periodic *w) 3409ev_periodic_again (EV_P_ ev_periodic *w)
2622{ 3410{
… …
2628 3416
2629#ifndef SA_RESTART 3417#ifndef SA_RESTART
2630# define SA_RESTART 0 3418# define SA_RESTART 0
2631#endif 3419#endif
2632 3420
3421#if EV_SIGNAL_ENABLE
3422
2633void noinline 3423void noinline
2634ev_signal_start (EV_P_ ev_signal *w) 3424ev_signal_start (EV_P_ ev_signal *w)
2635{ 3425{
2636#if EV_MULTIPLICITY
2637 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2638#endif
2639 if (expect_false (ev_is_active (w))) 3426 if (expect_false (ev_is_active (w)))
2640 return; 3427 return;
2641 3428
2642 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3429 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3430
3431#if EV_MULTIPLICITY
3432 assert (("libev: a signal must not be attached to two different loops",
3433 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3434
3435 signals [w->signum - 1].loop = EV_A;
3436#endif
2643 3437
2644 EV_FREQUENT_CHECK; 3438 EV_FREQUENT_CHECK;
2645 3439
2646#if EV_USE_SIGNALFD 3440#if EV_USE_SIGNALFD
2647 if (sigfd == -2) 3441 if (sigfd == -2)
… …
2669 sigaddset (&sigfd_set, w->signum); 3463 sigaddset (&sigfd_set, w->signum);
2670 sigprocmask (SIG_BLOCK, &sigfd_set, 0); 3464 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671 3465
2672 signalfd (sigfd, &sigfd_set, 0); 3466 signalfd (sigfd, &sigfd_set, 0);
2673 } 3467 }
2674 else
2675#endif 3468#endif
2676 evpipe_init (EV_A);
2677
2678 {
2679#ifndef _WIN32
2680 sigset_t full, prev;
2681 sigfillset (&full);
2682 sigprocmask (SIG_SETMASK, &full, &prev);
2683#endif
2684
2685 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2686
2687#ifndef _WIN32
2688 if (sigfd < 0)/*TODO*/
2689 sigdelset (&prev, w->signum);
2690 sigprocmask (SIG_SETMASK, &prev, 0);
2691#endif
2692 }
2693 3469
2694 ev_start (EV_A_ (W)w, 1); 3470 ev_start (EV_A_ (W)w, 1);
2695 wlist_add (&signals [w->signum - 1].head, (WL)w); 3471 wlist_add (&signals [w->signum - 1].head, (WL)w);
2696 3472
2697 if (!((WL)w)->next) 3473 if (!((WL)w)->next)
3474# if EV_USE_SIGNALFD
3475 if (sigfd < 0) /*TODO*/
3476# endif
2698 { 3477 {
2699#if _WIN32 3478# ifdef _WIN32
3479 evpipe_init (EV_A);
3480
2700 signal (w->signum, ev_sighandler); 3481 signal (w->signum, ev_sighandler);
2701#else 3482# else
2702 if (sigfd < 0) /*TODO*/
2703 {
2704 struct sigaction sa = { }; 3483 struct sigaction sa;
3484
3485 evpipe_init (EV_A);
3486
2705 sa.sa_handler = ev_sighandler; 3487 sa.sa_handler = ev_sighandler;
2706 sigfillset (&sa.sa_mask); 3488 sigfillset (&sa.sa_mask);
2707 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3489 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2708 sigaction (w->signum, &sa, 0); 3490 sigaction (w->signum, &sa, 0);
3491
3492 if (origflags & EVFLAG_NOSIGMASK)
3493 {
3494 sigemptyset (&sa.sa_mask);
3495 sigaddset (&sa.sa_mask, w->signum);
3496 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2709 } 3497 }
2710#endif 3498#endif
2711 } 3499 }
2712 3500
2713 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2714} 3502}
2715 3503
2716void noinline 3504void noinline
… …
2724 3512
2725 wlist_del (&signals [w->signum - 1].head, (WL)w); 3513 wlist_del (&signals [w->signum - 1].head, (WL)w);
2726 ev_stop (EV_A_ (W)w); 3514 ev_stop (EV_A_ (W)w);
2727 3515
2728 if (!signals [w->signum - 1].head) 3516 if (!signals [w->signum - 1].head)
3517 {
3518#if EV_MULTIPLICITY
3519 signals [w->signum - 1].loop = 0; /* unattach from signal */
3520#endif
2729#if EV_USE_SIGNALFD 3521#if EV_USE_SIGNALFD
2730 if (sigfd >= 0) 3522 if (sigfd >= 0)
2731 { 3523 {
2732 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3524 sigset_t ss;
3525
3526 sigemptyset (&ss);
3527 sigaddset (&ss, w->signum);
2733 sigdelset (&sigfd_set, w->signum); 3528 sigdelset (&sigfd_set, w->signum);
3529
2734 signalfd (sigfd, &sigfd_set, 0); 3530 signalfd (sigfd, &sigfd_set, 0);
2735 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3531 sigprocmask (SIG_UNBLOCK, &ss, 0);
2736 /*TODO: maybe unblock signal? */
2737 } 3532 }
2738 else 3533 else
2739#endif 3534#endif
2740 signal (w->signum, SIG_DFL); 3535 signal (w->signum, SIG_DFL);
3536 }
2741 3537
2742 EV_FREQUENT_CHECK; 3538 EV_FREQUENT_CHECK;
2743} 3539}
3540
3541#endif
3542
3543#if EV_CHILD_ENABLE
2744 3544
2745void 3545void
2746ev_child_start (EV_P_ ev_child *w) 3546ev_child_start (EV_P_ ev_child *w)
2747{ 3547{
2748#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
… …
2752 return; 3552 return;
2753 3553
2754 EV_FREQUENT_CHECK; 3554 EV_FREQUENT_CHECK;
2755 3555
2756 ev_start (EV_A_ (W)w, 1); 3556 ev_start (EV_A_ (W)w, 1);
2757 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3557 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2758 3558
2759 EV_FREQUENT_CHECK; 3559 EV_FREQUENT_CHECK;
2760} 3560}
2761 3561
2762void 3562void
… …
2766 if (expect_false (!ev_is_active (w))) 3566 if (expect_false (!ev_is_active (w)))
2767 return; 3567 return;
2768 3568
2769 EV_FREQUENT_CHECK; 3569 EV_FREQUENT_CHECK;
2770 3570
2771 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3571 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2772 ev_stop (EV_A_ (W)w); 3572 ev_stop (EV_A_ (W)w);
2773 3573
2774 EV_FREQUENT_CHECK; 3574 EV_FREQUENT_CHECK;
2775} 3575}
3576
3577#endif
2776 3578
2777#if EV_STAT_ENABLE 3579#if EV_STAT_ENABLE
2778 3580
2779# ifdef _WIN32 3581# ifdef _WIN32
2780# undef lstat 3582# undef lstat
… …
2786#define MIN_STAT_INTERVAL 0.1074891 3588#define MIN_STAT_INTERVAL 0.1074891
2787 3589
2788static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3590static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2789 3591
2790#if EV_USE_INOTIFY 3592#if EV_USE_INOTIFY
2791# define EV_INOTIFY_BUFSIZE 8192 3593
3594/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3595# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2792 3596
2793static void noinline 3597static void noinline
2794infy_add (EV_P_ ev_stat *w) 3598infy_add (EV_P_ ev_stat *w)
2795{ 3599{
2796 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); 3600 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);
2797 3601
2798 if (w->wd < 0) 3602 if (w->wd >= 0)
3603 {
3604 struct statfs sfs;
3605
3606 /* now local changes will be tracked by inotify, but remote changes won't */
3607 /* unless the filesystem is known to be local, we therefore still poll */
3608 /* also do poll on <2.6.25, but with normal frequency */
3609
3610 if (!fs_2625)
3611 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3612 else if (!statfs (w->path, &sfs)
3613 && (sfs.f_type == 0x1373 /* devfs */
3614 || sfs.f_type == 0xEF53 /* ext2/3 */
3615 || sfs.f_type == 0x3153464a /* jfs */
3616 || sfs.f_type == 0x52654973 /* reiser3 */
3617 || sfs.f_type == 0x01021994 /* tempfs */
3618 || sfs.f_type == 0x58465342 /* xfs */))
3619 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3620 else
3621 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2799 { 3622 }
3623 else
3624 {
3625 /* can't use inotify, continue to stat */
2800 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3626 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2801 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2802 3627
2803 /* monitor some parent directory for speedup hints */ 3628 /* if path is not there, monitor some parent directory for speedup hints */
2804 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3629 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2805 /* but an efficiency issue only */ 3630 /* but an efficiency issue only */
2806 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3631 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2807 { 3632 {
2808 char path [4096]; 3633 char path [4096];
… …
2818 if (!pend || pend == path) 3643 if (!pend || pend == path)
2819 break; 3644 break;
2820 3645
2821 *pend = 0; 3646 *pend = 0;
2822 w->wd = inotify_add_watch (fs_fd, path, mask); 3647 w->wd = inotify_add_watch (fs_fd, path, mask);
2823 } 3648 }
2824 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3649 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2825 } 3650 }
2826 } 3651 }
2827 3652
2828 if (w->wd >= 0) 3653 if (w->wd >= 0)
2829 {
2830 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3654 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2831 3655
2832 /* now local changes will be tracked by inotify, but remote changes won't */ 3656 /* now re-arm timer, if required */
2833 /* unless the filesystem it known to be local, we therefore still poll */ 3657 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2834 /* also do poll on <2.6.25, but with normal frequency */
2835 struct statfs sfs;
2836
2837 if (fs_2625 && !statfs (w->path, &sfs))
2838 if (sfs.f_type == 0x1373 /* devfs */
2839 || sfs.f_type == 0xEF53 /* ext2/3 */
2840 || sfs.f_type == 0x3153464a /* jfs */
2841 || sfs.f_type == 0x52654973 /* reiser3 */
2842 || sfs.f_type == 0x01021994 /* tempfs */
2843 || sfs.f_type == 0x58465342 /* xfs */)
2844 return;
2845
2846 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2847 ev_timer_again (EV_A_ &w->timer); 3658 ev_timer_again (EV_A_ &w->timer);
2848 } 3659 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2849} 3660}
2850 3661
2851static void noinline 3662static void noinline
2852infy_del (EV_P_ ev_stat *w) 3663infy_del (EV_P_ ev_stat *w)
2853{ 3664{
… …
2856 3667
2857 if (wd < 0) 3668 if (wd < 0)
2858 return; 3669 return;
2859 3670
2860 w->wd = -2; 3671 w->wd = -2;
2861 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3672 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2862 wlist_del (&fs_hash [slot].head, (WL)w); 3673 wlist_del (&fs_hash [slot].head, (WL)w);
2863 3674
2864 /* remove this watcher, if others are watching it, they will rearm */ 3675 /* remove this watcher, if others are watching it, they will rearm */
2865 inotify_rm_watch (fs_fd, wd); 3676 inotify_rm_watch (fs_fd, wd);
2866} 3677}
… …
2868static void noinline 3679static void noinline
2869infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3680infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2870{ 3681{
2871 if (slot < 0) 3682 if (slot < 0)
2872 /* overflow, need to check for all hash slots */ 3683 /* overflow, need to check for all hash slots */
2873 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3684 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2874 infy_wd (EV_A_ slot, wd, ev); 3685 infy_wd (EV_A_ slot, wd, ev);
2875 else 3686 else
2876 { 3687 {
2877 WL w_; 3688 WL w_;
2878 3689
2879 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3690 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2880 { 3691 {
2881 ev_stat *w = (ev_stat *)w_; 3692 ev_stat *w = (ev_stat *)w_;
2882 w_ = w_->next; /* lets us remove this watcher and all before it */ 3693 w_ = w_->next; /* lets us remove this watcher and all before it */
2883 3694
2884 if (w->wd == wd || wd == -1) 3695 if (w->wd == wd || wd == -1)
2885 { 3696 {
2886 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3697 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2887 { 3698 {
2888 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3699 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2889 w->wd = -1; 3700 w->wd = -1;
2890 infy_add (EV_A_ w); /* re-add, no matter what */ 3701 infy_add (EV_A_ w); /* re-add, no matter what */
2891 } 3702 }
2892 3703
2893 stat_timer_cb (EV_A_ &w->timer, 0); 3704 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2898 3709
2899static void 3710static void
2900infy_cb (EV_P_ ev_io *w, int revents) 3711infy_cb (EV_P_ ev_io *w, int revents)
2901{ 3712{
2902 char buf [EV_INOTIFY_BUFSIZE]; 3713 char buf [EV_INOTIFY_BUFSIZE];
2903 struct inotify_event *ev = (struct inotify_event *)buf;
2904 int ofs; 3714 int ofs;
2905 int len = read (fs_fd, buf, sizeof (buf)); 3715 int len = read (fs_fd, buf, sizeof (buf));
2906 3716
2907 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3717 for (ofs = 0; ofs < len; )
3718 {
3719 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2908 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3720 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3721 ofs += sizeof (struct inotify_event) + ev->len;
3722 }
2909} 3723}
2910 3724
2911inline_size void 3725inline_size void ecb_cold
2912check_2625 (EV_P) 3726ev_check_2625 (EV_P)
2913{ 3727{
2914 /* kernels < 2.6.25 are borked 3728 /* kernels < 2.6.25 are borked
2915 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3729 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2916 */ 3730 */
2917 struct utsname buf; 3731 if (ev_linux_version () < 0x020619)
2918 int major, minor, micro;
2919
2920 if (uname (&buf))
2921 return; 3732 return;
2922 3733
2923 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2924 return;
2925
2926 if (major < 2
2927 || (major == 2 && minor < 6)
2928 || (major == 2 && minor == 6 && micro < 25))
2929 return;
2930
2931 fs_2625 = 1; 3734 fs_2625 = 1;
3735}
3736
3737inline_size int
3738infy_newfd (void)
3739{
3740#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3741 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3742 if (fd >= 0)
3743 return fd;
3744#endif
3745 return inotify_init ();
2932} 3746}
2933 3747
2934inline_size void 3748inline_size void
2935infy_init (EV_P) 3749infy_init (EV_P)
2936{ 3750{
2937 if (fs_fd != -2) 3751 if (fs_fd != -2)
2938 return; 3752 return;
2939 3753
2940 fs_fd = -1; 3754 fs_fd = -1;
2941 3755
2942 check_2625 (EV_A); 3756 ev_check_2625 (EV_A);
2943 3757
2944 fs_fd = inotify_init (); 3758 fs_fd = infy_newfd ();
2945 3759
2946 if (fs_fd >= 0) 3760 if (fs_fd >= 0)
2947 { 3761 {
3762 fd_intern (fs_fd);
2948 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3763 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2949 ev_set_priority (&fs_w, EV_MAXPRI); 3764 ev_set_priority (&fs_w, EV_MAXPRI);
2950 ev_io_start (EV_A_ &fs_w); 3765 ev_io_start (EV_A_ &fs_w);
3766 ev_unref (EV_A);
2951 } 3767 }
2952} 3768}
2953 3769
2954inline_size void 3770inline_size void
2955infy_fork (EV_P) 3771infy_fork (EV_P)
… …
2957 int slot; 3773 int slot;
2958 3774
2959 if (fs_fd < 0) 3775 if (fs_fd < 0)
2960 return; 3776 return;
2961 3777
3778 ev_ref (EV_A);
3779 ev_io_stop (EV_A_ &fs_w);
2962 close (fs_fd); 3780 close (fs_fd);
2963 fs_fd = inotify_init (); 3781 fs_fd = infy_newfd ();
2964 3782
3783 if (fs_fd >= 0)
3784 {
3785 fd_intern (fs_fd);
3786 ev_io_set (&fs_w, fs_fd, EV_READ);
3787 ev_io_start (EV_A_ &fs_w);
3788 ev_unref (EV_A);
3789 }
3790
2965 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3791 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2966 { 3792 {
2967 WL w_ = fs_hash [slot].head; 3793 WL w_ = fs_hash [slot].head;
2968 fs_hash [slot].head = 0; 3794 fs_hash [slot].head = 0;
2969 3795
2970 while (w_) 3796 while (w_)
… …
2975 w->wd = -1; 3801 w->wd = -1;
2976 3802
2977 if (fs_fd >= 0) 3803 if (fs_fd >= 0)
2978 infy_add (EV_A_ w); /* re-add, no matter what */ 3804 infy_add (EV_A_ w); /* re-add, no matter what */
2979 else 3805 else
3806 {
3807 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3808 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2980 ev_timer_again (EV_A_ &w->timer); 3809 ev_timer_again (EV_A_ &w->timer);
3810 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3811 }
2981 } 3812 }
2982 } 3813 }
2983} 3814}
2984 3815
2985#endif 3816#endif
… …
3002static void noinline 3833static void noinline
3003stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3834stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3004{ 3835{
3005 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3836 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3006 3837
3007 /* we copy this here each the time so that */ 3838 ev_statdata prev = w->attr;
3008 /* prev has the old value when the callback gets invoked */
3009 w->prev = w->attr;
3010 ev_stat_stat (EV_A_ w); 3839 ev_stat_stat (EV_A_ w);
3011 3840
3012 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3841 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3013 if ( 3842 if (
3014 w->prev.st_dev != w->attr.st_dev 3843 prev.st_dev != w->attr.st_dev
3015 || w->prev.st_ino != w->attr.st_ino 3844 || prev.st_ino != w->attr.st_ino
3016 || w->prev.st_mode != w->attr.st_mode 3845 || prev.st_mode != w->attr.st_mode
3017 || w->prev.st_nlink != w->attr.st_nlink 3846 || prev.st_nlink != w->attr.st_nlink
3018 || w->prev.st_uid != w->attr.st_uid 3847 || prev.st_uid != w->attr.st_uid
3019 || w->prev.st_gid != w->attr.st_gid 3848 || prev.st_gid != w->attr.st_gid
3020 || w->prev.st_rdev != w->attr.st_rdev 3849 || prev.st_rdev != w->attr.st_rdev
3021 || w->prev.st_size != w->attr.st_size 3850 || prev.st_size != w->attr.st_size
3022 || w->prev.st_atime != w->attr.st_atime 3851 || prev.st_atime != w->attr.st_atime
3023 || w->prev.st_mtime != w->attr.st_mtime 3852 || prev.st_mtime != w->attr.st_mtime
3024 || w->prev.st_ctime != w->attr.st_ctime 3853 || prev.st_ctime != w->attr.st_ctime
3025 ) { 3854 ) {
3855 /* we only update w->prev on actual differences */
3856 /* in case we test more often than invoke the callback, */
3857 /* to ensure that prev is always different to attr */
3858 w->prev = prev;
3859
3026 #if EV_USE_INOTIFY 3860 #if EV_USE_INOTIFY
3027 if (fs_fd >= 0) 3861 if (fs_fd >= 0)
3028 { 3862 {
3029 infy_del (EV_A_ w); 3863 infy_del (EV_A_ w);
3030 infy_add (EV_A_ w); 3864 infy_add (EV_A_ w);
… …
3055 3889
3056 if (fs_fd >= 0) 3890 if (fs_fd >= 0)
3057 infy_add (EV_A_ w); 3891 infy_add (EV_A_ w);
3058 else 3892 else
3059#endif 3893#endif
3894 {
3060 ev_timer_again (EV_A_ &w->timer); 3895 ev_timer_again (EV_A_ &w->timer);
3896 ev_unref (EV_A);
3897 }
3061 3898
3062 ev_start (EV_A_ (W)w, 1); 3899 ev_start (EV_A_ (W)w, 1);
3063 3900
3064 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
3065} 3902}
… …
3074 EV_FREQUENT_CHECK; 3911 EV_FREQUENT_CHECK;
3075 3912
3076#if EV_USE_INOTIFY 3913#if EV_USE_INOTIFY
3077 infy_del (EV_A_ w); 3914 infy_del (EV_A_ w);
3078#endif 3915#endif
3916
3917 if (ev_is_active (&w->timer))
3918 {
3919 ev_ref (EV_A);
3079 ev_timer_stop (EV_A_ &w->timer); 3920 ev_timer_stop (EV_A_ &w->timer);
3921 }
3080 3922
3081 ev_stop (EV_A_ (W)w); 3923 ev_stop (EV_A_ (W)w);
3082 3924
3083 EV_FREQUENT_CHECK; 3925 EV_FREQUENT_CHECK;
3084} 3926}
… …
3129 3971
3130 EV_FREQUENT_CHECK; 3972 EV_FREQUENT_CHECK;
3131} 3973}
3132#endif 3974#endif
3133 3975
3976#if EV_PREPARE_ENABLE
3134void 3977void
3135ev_prepare_start (EV_P_ ev_prepare *w) 3978ev_prepare_start (EV_P_ ev_prepare *w)
3136{ 3979{
3137 if (expect_false (ev_is_active (w))) 3980 if (expect_false (ev_is_active (w)))
3138 return; 3981 return;
… …
3164 4007
3165 ev_stop (EV_A_ (W)w); 4008 ev_stop (EV_A_ (W)w);
3166 4009
3167 EV_FREQUENT_CHECK; 4010 EV_FREQUENT_CHECK;
3168} 4011}
4012#endif
3169 4013
4014#if EV_CHECK_ENABLE
3170void 4015void
3171ev_check_start (EV_P_ ev_check *w) 4016ev_check_start (EV_P_ ev_check *w)
3172{ 4017{
3173 if (expect_false (ev_is_active (w))) 4018 if (expect_false (ev_is_active (w)))
3174 return; 4019 return;
… …
3200 4045
3201 ev_stop (EV_A_ (W)w); 4046 ev_stop (EV_A_ (W)w);
3202 4047
3203 EV_FREQUENT_CHECK; 4048 EV_FREQUENT_CHECK;
3204} 4049}
4050#endif
3205 4051
3206#if EV_EMBED_ENABLE 4052#if EV_EMBED_ENABLE
3207void noinline 4053void noinline
3208ev_embed_sweep (EV_P_ ev_embed *w) 4054ev_embed_sweep (EV_P_ ev_embed *w)
3209{ 4055{
3210 ev_loop (w->other, EVLOOP_NONBLOCK); 4056 ev_run (w->other, EVRUN_NOWAIT);
3211} 4057}
3212 4058
3213static void 4059static void
3214embed_io_cb (EV_P_ ev_io *io, int revents) 4060embed_io_cb (EV_P_ ev_io *io, int revents)
3215{ 4061{
3216 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4062 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3217 4063
3218 if (ev_cb (w)) 4064 if (ev_cb (w))
3219 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4065 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3220 else 4066 else
3221 ev_loop (w->other, EVLOOP_NONBLOCK); 4067 ev_run (w->other, EVRUN_NOWAIT);
3222} 4068}
3223 4069
3224static void 4070static void
3225embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4071embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3226{ 4072{
3227 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4073 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3228 4074
3229 { 4075 {
3230 struct ev_loop *loop = w->other; 4076 EV_P = w->other;
3231 4077
3232 while (fdchangecnt) 4078 while (fdchangecnt)
3233 { 4079 {
3234 fd_reify (EV_A); 4080 fd_reify (EV_A);
3235 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4081 ev_run (EV_A_ EVRUN_NOWAIT);
3236 } 4082 }
3237 } 4083 }
3238} 4084}
3239 4085
3240static void 4086static void
… …
3243 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4089 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3244 4090
3245 ev_embed_stop (EV_A_ w); 4091 ev_embed_stop (EV_A_ w);
3246 4092
3247 { 4093 {
3248 struct ev_loop *loop = w->other; 4094 EV_P = w->other;
3249 4095
3250 ev_loop_fork (EV_A); 4096 ev_loop_fork (EV_A);
3251 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4097 ev_run (EV_A_ EVRUN_NOWAIT);
3252 } 4098 }
3253 4099
3254 ev_embed_start (EV_A_ w); 4100 ev_embed_start (EV_A_ w);
3255} 4101}
3256 4102
… …
3267{ 4113{
3268 if (expect_false (ev_is_active (w))) 4114 if (expect_false (ev_is_active (w)))
3269 return; 4115 return;
3270 4116
3271 { 4117 {
3272 struct ev_loop *loop = w->other; 4118 EV_P = w->other;
3273 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4119 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3274 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4120 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3275 } 4121 }
3276 4122
3277 EV_FREQUENT_CHECK; 4123 EV_FREQUENT_CHECK;
… …
3304 4150
3305 ev_io_stop (EV_A_ &w->io); 4151 ev_io_stop (EV_A_ &w->io);
3306 ev_prepare_stop (EV_A_ &w->prepare); 4152 ev_prepare_stop (EV_A_ &w->prepare);
3307 ev_fork_stop (EV_A_ &w->fork); 4153 ev_fork_stop (EV_A_ &w->fork);
3308 4154
4155 ev_stop (EV_A_ (W)w);
4156
3309 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3310} 4158}
3311#endif 4159#endif
3312 4160
3313#if EV_FORK_ENABLE 4161#if EV_FORK_ENABLE
… …
3346 4194
3347 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
3348} 4196}
3349#endif 4197#endif
3350 4198
4199#if EV_CLEANUP_ENABLE
4200void
4201ev_cleanup_start (EV_P_ ev_cleanup *w)
4202{
4203 if (expect_false (ev_is_active (w)))
4204 return;
4205
4206 EV_FREQUENT_CHECK;
4207
4208 ev_start (EV_A_ (W)w, ++cleanupcnt);
4209 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4210 cleanups [cleanupcnt - 1] = w;
4211
4212 /* cleanup watchers should never keep a refcount on the loop */
4213 ev_unref (EV_A);
4214 EV_FREQUENT_CHECK;
4215}
4216
4217void
4218ev_cleanup_stop (EV_P_ ev_cleanup *w)
4219{
4220 clear_pending (EV_A_ (W)w);
4221 if (expect_false (!ev_is_active (w)))
4222 return;
4223
4224 EV_FREQUENT_CHECK;
4225 ev_ref (EV_A);
4226
4227 {
4228 int active = ev_active (w);
4229
4230 cleanups [active - 1] = cleanups [--cleanupcnt];
4231 ev_active (cleanups [active - 1]) = active;
4232 }
4233
4234 ev_stop (EV_A_ (W)w);
4235
4236 EV_FREQUENT_CHECK;
4237}
4238#endif
4239
3351#if EV_ASYNC_ENABLE 4240#if EV_ASYNC_ENABLE
3352void 4241void
3353ev_async_start (EV_P_ ev_async *w) 4242ev_async_start (EV_P_ ev_async *w)
3354{ 4243{
3355 if (expect_false (ev_is_active (w))) 4244 if (expect_false (ev_is_active (w)))
3356 return; 4245 return;
3357 4246
4247 w->sent = 0;
4248
3358 evpipe_init (EV_A); 4249 evpipe_init (EV_A);
3359 4250
3360 EV_FREQUENT_CHECK; 4251 EV_FREQUENT_CHECK;
3361 4252
3362 ev_start (EV_A_ (W)w, ++asynccnt); 4253 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3389 4280
3390void 4281void
3391ev_async_send (EV_P_ ev_async *w) 4282ev_async_send (EV_P_ ev_async *w)
3392{ 4283{
3393 w->sent = 1; 4284 w->sent = 1;
3394 evpipe_write (EV_A_ &gotasync); 4285 evpipe_write (EV_A_ &async_pending);
3395} 4286}
3396#endif 4287#endif
3397 4288
3398/*****************************************************************************/ 4289/*****************************************************************************/
3399 4290
… …
3439{ 4330{
3440 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4331 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3441 4332
3442 if (expect_false (!once)) 4333 if (expect_false (!once))
3443 { 4334 {
3444 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4335 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3445 return; 4336 return;
3446 } 4337 }
3447 4338
3448 once->cb = cb; 4339 once->cb = cb;
3449 once->arg = arg; 4340 once->arg = arg;
… …
3464} 4355}
3465 4356
3466/*****************************************************************************/ 4357/*****************************************************************************/
3467 4358
3468#if EV_WALK_ENABLE 4359#if EV_WALK_ENABLE
3469void 4360void ecb_cold
3470ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4361ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3471{ 4362{
3472 int i, j; 4363 int i, j;
3473 ev_watcher_list *wl, *wn; 4364 ev_watcher_list *wl, *wn;
3474 4365
… …
3518 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4409 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3519#endif 4410#endif
3520 4411
3521#if EV_IDLE_ENABLE 4412#if EV_IDLE_ENABLE
3522 if (types & EV_IDLE) 4413 if (types & EV_IDLE)
3523 for (j = NUMPRI; i--; ) 4414 for (j = NUMPRI; j--; )
3524 for (i = idlecnt [j]; i--; ) 4415 for (i = idlecnt [j]; i--; )
3525 cb (EV_A_ EV_IDLE, idles [j][i]); 4416 cb (EV_A_ EV_IDLE, idles [j][i]);
3526#endif 4417#endif
3527 4418
3528#if EV_FORK_ENABLE 4419#if EV_FORK_ENABLE
… …
3536 if (types & EV_ASYNC) 4427 if (types & EV_ASYNC)
3537 for (i = asynccnt; i--; ) 4428 for (i = asynccnt; i--; )
3538 cb (EV_A_ EV_ASYNC, asyncs [i]); 4429 cb (EV_A_ EV_ASYNC, asyncs [i]);
3539#endif 4430#endif
3540 4431
4432#if EV_PREPARE_ENABLE
3541 if (types & EV_PREPARE) 4433 if (types & EV_PREPARE)
3542 for (i = preparecnt; i--; ) 4434 for (i = preparecnt; i--; )
3543#if EV_EMBED_ENABLE 4435# if EV_EMBED_ENABLE
3544 if (ev_cb (prepares [i]) != embed_prepare_cb) 4436 if (ev_cb (prepares [i]) != embed_prepare_cb)
3545#endif 4437# endif
3546 cb (EV_A_ EV_PREPARE, prepares [i]); 4438 cb (EV_A_ EV_PREPARE, prepares [i]);
4439#endif
3547 4440
4441#if EV_CHECK_ENABLE
3548 if (types & EV_CHECK) 4442 if (types & EV_CHECK)
3549 for (i = checkcnt; i--; ) 4443 for (i = checkcnt; i--; )
3550 cb (EV_A_ EV_CHECK, checks [i]); 4444 cb (EV_A_ EV_CHECK, checks [i]);
4445#endif
3551 4446
4447#if EV_SIGNAL_ENABLE
3552 if (types & EV_SIGNAL) 4448 if (types & EV_SIGNAL)
3553 for (i = 0; i < signalmax; ++i) 4449 for (i = 0; i < EV_NSIG - 1; ++i)
3554 for (wl = signals [i].head; wl; ) 4450 for (wl = signals [i].head; wl; )
3555 { 4451 {
3556 wn = wl->next; 4452 wn = wl->next;
3557 cb (EV_A_ EV_SIGNAL, wl); 4453 cb (EV_A_ EV_SIGNAL, wl);
3558 wl = wn; 4454 wl = wn;
3559 } 4455 }
4456#endif
3560 4457
4458#if EV_CHILD_ENABLE
3561 if (types & EV_CHILD) 4459 if (types & EV_CHILD)
3562 for (i = EV_PID_HASHSIZE; i--; ) 4460 for (i = (EV_PID_HASHSIZE); i--; )
3563 for (wl = childs [i]; wl; ) 4461 for (wl = childs [i]; wl; )
3564 { 4462 {
3565 wn = wl->next; 4463 wn = wl->next;
3566 cb (EV_A_ EV_CHILD, wl); 4464 cb (EV_A_ EV_CHILD, wl);
3567 wl = wn; 4465 wl = wn;
3568 } 4466 }
4467#endif
3569/* EV_STAT 0x00001000 /* stat data changed */ 4468/* EV_STAT 0x00001000 /* stat data changed */
3570/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4469/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3571} 4470}
3572#endif 4471#endif
3573 4472
3574#if EV_MULTIPLICITY 4473#if EV_MULTIPLICITY
3575 #include "ev_wrap.h" 4474 #include "ev_wrap.h"
3576#endif 4475#endif
3577 4476
3578#ifdef __cplusplus
3579}
3580#endif
3581

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