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Comparing libev/ev.c (file contents):
Revision 1.304 by root, Sun Jul 19 03:12:28 2009 UTC vs.
Revision 1.414 by root, Sat Mar 24 19:38:51 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 #elif defined(__mips__)
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #endif
585 #endif
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
590 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined(_WIN32)
599 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
606 #elif __xlC__
607 #define ECB_MEMORY_FENCE __sync ()
608 #endif
609#endif
610
611#ifndef ECB_MEMORY_FENCE
612 #if !ECB_AVOID_PTHREADS
613 /*
614 * if you get undefined symbol references to pthread_mutex_lock,
615 * or failure to find pthread.h, then you should implement
616 * the ECB_MEMORY_FENCE operations for your cpu/compiler
617 * OR provide pthread.h and link against the posix thread library
618 * of your system.
619 */
620 #include <pthread.h>
621 #define ECB_NEEDS_PTHREADS 1
622 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
623
624 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
625 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
626 #endif
627#endif
628
629#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
630 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
631#endif
632
633#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
634 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
635#endif
636
637/*****************************************************************************/
638
639#define ECB_C99 (__STDC_VERSION__ >= 199901L)
640
641#if __cplusplus
642 #define ecb_inline static inline
643#elif ECB_GCC_VERSION(2,5)
644 #define ecb_inline static __inline__
645#elif ECB_C99
646 #define ecb_inline static inline
647#else
648 #define ecb_inline static
649#endif
650
651#if ECB_GCC_VERSION(3,3)
652 #define ecb_restrict __restrict__
653#elif ECB_C99
654 #define ecb_restrict restrict
655#else
656 #define ecb_restrict
657#endif
658
659typedef int ecb_bool;
660
661#define ECB_CONCAT_(a, b) a ## b
662#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
663#define ECB_STRINGIFY_(a) # a
664#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
665
666#define ecb_function_ ecb_inline
667
668#if ECB_GCC_VERSION(3,1)
669 #define ecb_attribute(attrlist) __attribute__(attrlist)
670 #define ecb_is_constant(expr) __builtin_constant_p (expr)
671 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
672 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
673#else
674 #define ecb_attribute(attrlist)
675 #define ecb_is_constant(expr) 0
676 #define ecb_expect(expr,value) (expr)
677 #define ecb_prefetch(addr,rw,locality)
678#endif
679
680/* no emulation for ecb_decltype */
681#if ECB_GCC_VERSION(4,5)
682 #define ecb_decltype(x) __decltype(x)
683#elif ECB_GCC_VERSION(3,0)
684 #define ecb_decltype(x) __typeof(x)
685#endif
686
687#define ecb_noinline ecb_attribute ((__noinline__))
688#define ecb_noreturn ecb_attribute ((__noreturn__))
689#define ecb_unused ecb_attribute ((__unused__))
690#define ecb_const ecb_attribute ((__const__))
691#define ecb_pure ecb_attribute ((__pure__))
692
693#if ECB_GCC_VERSION(4,3)
694 #define ecb_artificial ecb_attribute ((__artificial__))
695 #define ecb_hot ecb_attribute ((__hot__))
696 #define ecb_cold ecb_attribute ((__cold__))
697#else
698 #define ecb_artificial
699 #define ecb_hot
700 #define ecb_cold
701#endif
702
703/* put around conditional expressions if you are very sure that the */
704/* expression is mostly true or mostly false. note that these return */
705/* booleans, not the expression. */
412#define expect_false(expr) expect ((expr) != 0, 0) 706#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
413#define expect_true(expr) expect ((expr) != 0, 1) 707#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
708/* for compatibility to the rest of the world */
709#define ecb_likely(expr) ecb_expect_true (expr)
710#define ecb_unlikely(expr) ecb_expect_false (expr)
711
712/* count trailing zero bits and count # of one bits */
713#if ECB_GCC_VERSION(3,4)
714 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
715 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
716 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
717 #define ecb_ctz32(x) __builtin_ctz (x)
718 #define ecb_ctz64(x) __builtin_ctzll (x)
719 #define ecb_popcount32(x) __builtin_popcount (x)
720 /* no popcountll */
721#else
722 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
723 ecb_function_ int
724 ecb_ctz32 (uint32_t x)
725 {
726 int r = 0;
727
728 x &= ~x + 1; /* this isolates the lowest bit */
729
730#if ECB_branchless_on_i386
731 r += !!(x & 0xaaaaaaaa) << 0;
732 r += !!(x & 0xcccccccc) << 1;
733 r += !!(x & 0xf0f0f0f0) << 2;
734 r += !!(x & 0xff00ff00) << 3;
735 r += !!(x & 0xffff0000) << 4;
736#else
737 if (x & 0xaaaaaaaa) r += 1;
738 if (x & 0xcccccccc) r += 2;
739 if (x & 0xf0f0f0f0) r += 4;
740 if (x & 0xff00ff00) r += 8;
741 if (x & 0xffff0000) r += 16;
742#endif
743
744 return r;
745 }
746
747 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
748 ecb_function_ int
749 ecb_ctz64 (uint64_t x)
750 {
751 int shift = x & 0xffffffffU ? 0 : 32;
752 return ecb_ctz32 (x >> shift) + shift;
753 }
754
755 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
756 ecb_function_ int
757 ecb_popcount32 (uint32_t x)
758 {
759 x -= (x >> 1) & 0x55555555;
760 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
761 x = ((x >> 4) + x) & 0x0f0f0f0f;
762 x *= 0x01010101;
763
764 return x >> 24;
765 }
766
767 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
768 ecb_function_ int ecb_ld32 (uint32_t x)
769 {
770 int r = 0;
771
772 if (x >> 16) { x >>= 16; r += 16; }
773 if (x >> 8) { x >>= 8; r += 8; }
774 if (x >> 4) { x >>= 4; r += 4; }
775 if (x >> 2) { x >>= 2; r += 2; }
776 if (x >> 1) { r += 1; }
777
778 return r;
779 }
780
781 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
782 ecb_function_ int ecb_ld64 (uint64_t x)
783 {
784 int r = 0;
785
786 if (x >> 32) { x >>= 32; r += 32; }
787
788 return r + ecb_ld32 (x);
789 }
790#endif
791
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
793ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
794{
795 return ( (x * 0x0802U & 0x22110U)
796 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
797}
798
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
800ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
801{
802 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
803 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
804 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
805 x = ( x >> 8 ) | ( x << 8);
806
807 return x;
808}
809
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
811ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
812{
813 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
814 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
815 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
816 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
817 x = ( x >> 16 ) | ( x << 16);
818
819 return x;
820}
821
822/* popcount64 is only available on 64 bit cpus as gcc builtin */
823/* so for this version we are lazy */
824ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
825ecb_function_ int
826ecb_popcount64 (uint64_t x)
827{
828 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
829}
830
831ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
838ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
839
840ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
841ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
842ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
843ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
844ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
845ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
846ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
847ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
848
849#if ECB_GCC_VERSION(4,3)
850 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
851 #define ecb_bswap32(x) __builtin_bswap32 (x)
852 #define ecb_bswap64(x) __builtin_bswap64 (x)
853#else
854 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
855 ecb_function_ uint16_t
856 ecb_bswap16 (uint16_t x)
857 {
858 return ecb_rotl16 (x, 8);
859 }
860
861 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
862 ecb_function_ uint32_t
863 ecb_bswap32 (uint32_t x)
864 {
865 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
866 }
867
868 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
869 ecb_function_ uint64_t
870 ecb_bswap64 (uint64_t x)
871 {
872 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
873 }
874#endif
875
876#if ECB_GCC_VERSION(4,5)
877 #define ecb_unreachable() __builtin_unreachable ()
878#else
879 /* this seems to work fine, but gcc always emits a warning for it :/ */
880 ecb_inline void ecb_unreachable (void) ecb_noreturn;
881 ecb_inline void ecb_unreachable (void) { }
882#endif
883
884/* try to tell the compiler that some condition is definitely true */
885#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
886
887ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
888ecb_inline unsigned char
889ecb_byteorder_helper (void)
890{
891 const uint32_t u = 0x11223344;
892 return *(unsigned char *)&u;
893}
894
895ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
896ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
897ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
899
900#if ECB_GCC_VERSION(3,0) || ECB_C99
901 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
902#else
903 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
904#endif
905
906#if __cplusplus
907 template<typename T>
908 static inline T ecb_div_rd (T val, T div)
909 {
910 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
911 }
912 template<typename T>
913 static inline T ecb_div_ru (T val, T div)
914 {
915 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
916 }
917#else
918 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
919 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
920#endif
921
922#if ecb_cplusplus_does_not_suck
923 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
924 template<typename T, int N>
925 static inline int ecb_array_length (const T (&arr)[N])
926 {
927 return N;
928 }
929#else
930 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
931#endif
932
933#endif
934
935/* ECB.H END */
936
937#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
938/* if your architecture doesn't need memory fences, e.g. because it is
939 * single-cpu/core, or if you use libev in a project that doesn't use libev
940 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
941 * libev, in which cases the memory fences become nops.
942 * alternatively, you can remove this #error and link against libpthread,
943 * which will then provide the memory fences.
944 */
945# error "memory fences not defined for your architecture, please report"
946#endif
947
948#ifndef ECB_MEMORY_FENCE
949# define ECB_MEMORY_FENCE do { } while (0)
950# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
952#endif
953
954#define expect_false(cond) ecb_expect_false (cond)
955#define expect_true(cond) ecb_expect_true (cond)
956#define noinline ecb_noinline
957
414#define inline_size static inline 958#define inline_size ecb_inline
415 959
416#if EV_MINIMAL 960#if EV_FEATURE_CODE
961# define inline_speed ecb_inline
962#else
417# define inline_speed static noinline 963# define inline_speed static noinline
418#else
419# define inline_speed static inline
420#endif 964#endif
421 965
422#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 966#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
423 967
424#if EV_MINPRI == EV_MAXPRI 968#if EV_MINPRI == EV_MAXPRI
… …
437#define ev_active(w) ((W)(w))->active 981#define ev_active(w) ((W)(w))->active
438#define ev_at(w) ((WT)(w))->at 982#define ev_at(w) ((WT)(w))->at
439 983
440#if EV_USE_REALTIME 984#if EV_USE_REALTIME
441/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 985/* 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 */ 986/* giving it a reasonably high chance of working on typical architectures */
443static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 987static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
444#endif 988#endif
445 989
446#if EV_USE_MONOTONIC 990#if EV_USE_MONOTONIC
447static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 991static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
448#endif 992#endif
449 993
994#ifndef EV_FD_TO_WIN32_HANDLE
995# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
996#endif
997#ifndef EV_WIN32_HANDLE_TO_FD
998# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
999#endif
1000#ifndef EV_WIN32_CLOSE_FD
1001# define EV_WIN32_CLOSE_FD(fd) close (fd)
1002#endif
1003
450#ifdef _WIN32 1004#ifdef _WIN32
451# include "ev_win32.c" 1005# include "ev_win32.c"
452#endif 1006#endif
453 1007
454/*****************************************************************************/ 1008/*****************************************************************************/
455 1009
1010/* define a suitable floor function (only used by periodics atm) */
1011
1012#if EV_USE_FLOOR
1013# include <math.h>
1014# define ev_floor(v) floor (v)
1015#else
1016
1017#include <float.h>
1018
1019/* a floor() replacement function, should be independent of ev_tstamp type */
1020static ev_tstamp noinline
1021ev_floor (ev_tstamp v)
1022{
1023 /* the choice of shift factor is not terribly important */
1024#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1026#else
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1028#endif
1029
1030 /* argument too large for an unsigned long? */
1031 if (expect_false (v >= shift))
1032 {
1033 ev_tstamp f;
1034
1035 if (v == v - 1.)
1036 return v; /* very large number */
1037
1038 f = shift * ev_floor (v * (1. / shift));
1039 return f + ev_floor (v - f);
1040 }
1041
1042 /* special treatment for negative args? */
1043 if (expect_false (v < 0.))
1044 {
1045 ev_tstamp f = -ev_floor (-v);
1046
1047 return f - (f == v ? 0 : 1);
1048 }
1049
1050 /* fits into an unsigned long */
1051 return (unsigned long)v;
1052}
1053
1054#endif
1055
1056/*****************************************************************************/
1057
1058#ifdef __linux
1059# include <sys/utsname.h>
1060#endif
1061
1062static unsigned int noinline ecb_cold
1063ev_linux_version (void)
1064{
1065#ifdef __linux
1066 unsigned int v = 0;
1067 struct utsname buf;
1068 int i;
1069 char *p = buf.release;
1070
1071 if (uname (&buf))
1072 return 0;
1073
1074 for (i = 3+1; --i; )
1075 {
1076 unsigned int c = 0;
1077
1078 for (;;)
1079 {
1080 if (*p >= '0' && *p <= '9')
1081 c = c * 10 + *p++ - '0';
1082 else
1083 {
1084 p += *p == '.';
1085 break;
1086 }
1087 }
1088
1089 v = (v << 8) | c;
1090 }
1091
1092 return v;
1093#else
1094 return 0;
1095#endif
1096}
1097
1098/*****************************************************************************/
1099
1100#if EV_AVOID_STDIO
1101static void noinline ecb_cold
1102ev_printerr (const char *msg)
1103{
1104 write (STDERR_FILENO, msg, strlen (msg));
1105}
1106#endif
1107
456static void (*syserr_cb)(const char *msg); 1108static void (*syserr_cb)(const char *msg);
457 1109
458void 1110void ecb_cold
459ev_set_syserr_cb (void (*cb)(const char *msg)) 1111ev_set_syserr_cb (void (*cb)(const char *msg))
460{ 1112{
461 syserr_cb = cb; 1113 syserr_cb = cb;
462} 1114}
463 1115
464static void noinline 1116static void noinline ecb_cold
465ev_syserr (const char *msg) 1117ev_syserr (const char *msg)
466{ 1118{
467 if (!msg) 1119 if (!msg)
468 msg = "(libev) system error"; 1120 msg = "(libev) system error";
469 1121
470 if (syserr_cb) 1122 if (syserr_cb)
471 syserr_cb (msg); 1123 syserr_cb (msg);
472 else 1124 else
473 { 1125 {
1126#if EV_AVOID_STDIO
1127 ev_printerr (msg);
1128 ev_printerr (": ");
1129 ev_printerr (strerror (errno));
1130 ev_printerr ("\n");
1131#else
474 perror (msg); 1132 perror (msg);
1133#endif
475 abort (); 1134 abort ();
476 } 1135 }
477} 1136}
478 1137
479static void * 1138static void *
480ev_realloc_emul (void *ptr, long size) 1139ev_realloc_emul (void *ptr, long size)
481{ 1140{
1141#if __GLIBC__
1142 return realloc (ptr, size);
1143#else
482 /* some systems, notably openbsd and darwin, fail to properly 1144 /* some systems, notably openbsd and darwin, fail to properly
483 * implement realloc (x, 0) (as required by both ansi c-98 and 1145 * implement realloc (x, 0) (as required by both ansi c-89 and
484 * the single unix specification, so work around them here. 1146 * the single unix specification, so work around them here.
485 */ 1147 */
486 1148
487 if (size) 1149 if (size)
488 return realloc (ptr, size); 1150 return realloc (ptr, size);
489 1151
490 free (ptr); 1152 free (ptr);
491 return 0; 1153 return 0;
1154#endif
492} 1155}
493 1156
494static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1157static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
495 1158
496void 1159void ecb_cold
497ev_set_allocator (void *(*cb)(void *ptr, long size)) 1160ev_set_allocator (void *(*cb)(void *ptr, long size))
498{ 1161{
499 alloc = cb; 1162 alloc = cb;
500} 1163}
501 1164
… …
504{ 1167{
505 ptr = alloc (ptr, size); 1168 ptr = alloc (ptr, size);
506 1169
507 if (!ptr && size) 1170 if (!ptr && size)
508 { 1171 {
1172#if EV_AVOID_STDIO
1173 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1174#else
509 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1175 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1176#endif
510 abort (); 1177 abort ();
511 } 1178 }
512 1179
513 return ptr; 1180 return ptr;
514} 1181}
… …
530 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1197 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
531 unsigned char unused; 1198 unsigned char unused;
532#if EV_USE_EPOLL 1199#if EV_USE_EPOLL
533 unsigned int egen; /* generation counter to counter epoll bugs */ 1200 unsigned int egen; /* generation counter to counter epoll bugs */
534#endif 1201#endif
535#if EV_SELECT_IS_WINSOCKET 1202#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
536 SOCKET handle; 1203 SOCKET handle;
1204#endif
1205#if EV_USE_IOCP
1206 OVERLAPPED or, ow;
537#endif 1207#endif
538} ANFD; 1208} ANFD;
539 1209
540/* stores the pending event set for a given watcher */ 1210/* stores the pending event set for a given watcher */
541typedef struct 1211typedef struct
… …
583 #undef VAR 1253 #undef VAR
584 }; 1254 };
585 #include "ev_wrap.h" 1255 #include "ev_wrap.h"
586 1256
587 static struct ev_loop default_loop_struct; 1257 static struct ev_loop default_loop_struct;
588 struct ev_loop *ev_default_loop_ptr; 1258 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
589 1259
590#else 1260#else
591 1261
592 ev_tstamp ev_rt_now; 1262 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; 1263 #define VAR(name,decl) static decl;
594 #include "ev_vars.h" 1264 #include "ev_vars.h"
595 #undef VAR 1265 #undef VAR
596 1266
597 static int ev_default_loop_ptr; 1267 static int ev_default_loop_ptr;
598 1268
599#endif 1269#endif
600 1270
601#if EV_MINIMAL < 2 1271#if EV_FEATURE_API
602# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1272# 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) 1273# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
604# define EV_INVOKE_PENDING invoke_cb (EV_A) 1274# define EV_INVOKE_PENDING invoke_cb (EV_A)
605#else 1275#else
606# define EV_RELEASE_CB (void)0 1276# define EV_RELEASE_CB (void)0
607# define EV_ACQUIRE_CB (void)0 1277# define EV_ACQUIRE_CB (void)0
608# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1278# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
609#endif 1279#endif
610 1280
611#define EVUNLOOP_RECURSE 0x80 1281#define EVBREAK_RECURSE 0x80
612 1282
613/*****************************************************************************/ 1283/*****************************************************************************/
614 1284
615#ifndef EV_HAVE_EV_TIME 1285#ifndef EV_HAVE_EV_TIME
616ev_tstamp 1286ev_tstamp
… …
660 if (delay > 0.) 1330 if (delay > 0.)
661 { 1331 {
662#if EV_USE_NANOSLEEP 1332#if EV_USE_NANOSLEEP
663 struct timespec ts; 1333 struct timespec ts;
664 1334
665 ts.tv_sec = (time_t)delay; 1335 EV_TS_SET (ts, delay);
666 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
667
668 nanosleep (&ts, 0); 1336 nanosleep (&ts, 0);
669#elif defined(_WIN32) 1337#elif defined(_WIN32)
670 Sleep ((unsigned long)(delay * 1e3)); 1338 Sleep ((unsigned long)(delay * 1e3));
671#else 1339#else
672 struct timeval tv; 1340 struct timeval tv;
673 1341
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 */ 1342 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
678 /* something not guaranteed by newer posix versions, but guaranteed */ 1343 /* something not guaranteed by newer posix versions, but guaranteed */
679 /* by older ones */ 1344 /* by older ones */
1345 EV_TV_SET (tv, delay);
680 select (0, 0, 0, 0, &tv); 1346 select (0, 0, 0, 0, &tv);
681#endif 1347#endif
682 } 1348 }
683} 1349}
684 1350
685/*****************************************************************************/ 1351/*****************************************************************************/
686 1352
687#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1353#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
688 1354
689/* find a suitable new size for the given array, */ 1355/* find a suitable new size for the given array, */
690/* hopefully by rounding to a ncie-to-malloc size */ 1356/* hopefully by rounding to a nice-to-malloc size */
691inline_size int 1357inline_size int
692array_nextsize (int elem, int cur, int cnt) 1358array_nextsize (int elem, int cur, int cnt)
693{ 1359{
694 int ncur = cur + 1; 1360 int ncur = cur + 1;
695 1361
696 do 1362 do
697 ncur <<= 1; 1363 ncur <<= 1;
698 while (cnt > ncur); 1364 while (cnt > ncur);
699 1365
700 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1366 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
701 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1367 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
702 { 1368 {
703 ncur *= elem; 1369 ncur *= elem;
704 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1370 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
705 ncur = ncur - sizeof (void *) * 4; 1371 ncur = ncur - sizeof (void *) * 4;
… …
707 } 1373 }
708 1374
709 return ncur; 1375 return ncur;
710} 1376}
711 1377
712static noinline void * 1378static void * noinline ecb_cold
713array_realloc (int elem, void *base, int *cur, int cnt) 1379array_realloc (int elem, void *base, int *cur, int cnt)
714{ 1380{
715 *cur = array_nextsize (elem, *cur, cnt); 1381 *cur = array_nextsize (elem, *cur, cnt);
716 return ev_realloc (base, elem * *cur); 1382 return ev_realloc (base, elem * *cur);
717} 1383}
… …
720 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1386 memset ((void *)(base), 0, sizeof (*(base)) * (count))
721 1387
722#define array_needsize(type,base,cur,cnt,init) \ 1388#define array_needsize(type,base,cur,cnt,init) \
723 if (expect_false ((cnt) > (cur))) \ 1389 if (expect_false ((cnt) > (cur))) \
724 { \ 1390 { \
725 int ocur_ = (cur); \ 1391 int ecb_unused ocur_ = (cur); \
726 (base) = (type *)array_realloc \ 1392 (base) = (type *)array_realloc \
727 (sizeof (type), (base), &(cur), (cnt)); \ 1393 (sizeof (type), (base), &(cur), (cnt)); \
728 init ((base) + (ocur_), (cur) - ocur_); \ 1394 init ((base) + (ocur_), (cur) - ocur_); \
729 } 1395 }
730 1396
… …
791} 1457}
792 1458
793/*****************************************************************************/ 1459/*****************************************************************************/
794 1460
795inline_speed void 1461inline_speed void
796fd_event_nc (EV_P_ int fd, int revents) 1462fd_event_nocheck (EV_P_ int fd, int revents)
797{ 1463{
798 ANFD *anfd = anfds + fd; 1464 ANFD *anfd = anfds + fd;
799 ev_io *w; 1465 ev_io *w;
800 1466
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1467 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
813fd_event (EV_P_ int fd, int revents) 1479fd_event (EV_P_ int fd, int revents)
814{ 1480{
815 ANFD *anfd = anfds + fd; 1481 ANFD *anfd = anfds + fd;
816 1482
817 if (expect_true (!anfd->reify)) 1483 if (expect_true (!anfd->reify))
818 fd_event_nc (EV_A_ fd, revents); 1484 fd_event_nocheck (EV_A_ fd, revents);
819} 1485}
820 1486
821void 1487void
822ev_feed_fd_event (EV_P_ int fd, int revents) 1488ev_feed_fd_event (EV_P_ int fd, int revents)
823{ 1489{
824 if (fd >= 0 && fd < anfdmax) 1490 if (fd >= 0 && fd < anfdmax)
825 fd_event_nc (EV_A_ fd, revents); 1491 fd_event_nocheck (EV_A_ fd, revents);
826} 1492}
827 1493
828/* make sure the external fd watch events are in-sync */ 1494/* make sure the external fd watch events are in-sync */
829/* with the kernel/libev internal state */ 1495/* with the kernel/libev internal state */
830inline_size void 1496inline_size void
831fd_reify (EV_P) 1497fd_reify (EV_P)
832{ 1498{
833 int i; 1499 int i;
834 1500
1501#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1502 for (i = 0; i < fdchangecnt; ++i)
1503 {
1504 int fd = fdchanges [i];
1505 ANFD *anfd = anfds + fd;
1506
1507 if (anfd->reify & EV__IOFDSET && anfd->head)
1508 {
1509 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1510
1511 if (handle != anfd->handle)
1512 {
1513 unsigned long arg;
1514
1515 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1516
1517 /* handle changed, but fd didn't - we need to do it in two steps */
1518 backend_modify (EV_A_ fd, anfd->events, 0);
1519 anfd->events = 0;
1520 anfd->handle = handle;
1521 }
1522 }
1523 }
1524#endif
1525
835 for (i = 0; i < fdchangecnt; ++i) 1526 for (i = 0; i < fdchangecnt; ++i)
836 { 1527 {
837 int fd = fdchanges [i]; 1528 int fd = fdchanges [i];
838 ANFD *anfd = anfds + fd; 1529 ANFD *anfd = anfds + fd;
839 ev_io *w; 1530 ev_io *w;
840 1531
841 unsigned char events = 0; 1532 unsigned char o_events = anfd->events;
1533 unsigned char o_reify = anfd->reify;
842 1534
843 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1535 anfd->reify = 0;
844 events |= (unsigned char)w->events;
845 1536
846#if EV_SELECT_IS_WINSOCKET 1537 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
847 if (events)
848 { 1538 {
849 unsigned long arg; 1539 anfd->events = 0;
850 #ifdef EV_FD_TO_WIN32_HANDLE 1540
851 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
852 #else 1542 anfd->events |= (unsigned char)w->events;
853 anfd->handle = _get_osfhandle (fd); 1543
854 #endif 1544 if (o_events != anfd->events)
855 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1545 o_reify = EV__IOFDSET; /* actually |= */
856 } 1546 }
857#endif
858 1547
859 { 1548 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); 1549 backend_modify (EV_A_ fd, o_events, anfd->events);
868 }
869 } 1550 }
870 1551
871 fdchangecnt = 0; 1552 fdchangecnt = 0;
872} 1553}
873 1554
… …
885 fdchanges [fdchangecnt - 1] = fd; 1566 fdchanges [fdchangecnt - 1] = fd;
886 } 1567 }
887} 1568}
888 1569
889/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1570/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
890inline_speed void 1571inline_speed void ecb_cold
891fd_kill (EV_P_ int fd) 1572fd_kill (EV_P_ int fd)
892{ 1573{
893 ev_io *w; 1574 ev_io *w;
894 1575
895 while ((w = (ev_io *)anfds [fd].head)) 1576 while ((w = (ev_io *)anfds [fd].head))
… …
897 ev_io_stop (EV_A_ w); 1578 ev_io_stop (EV_A_ w);
898 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1579 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
899 } 1580 }
900} 1581}
901 1582
902/* check whether the given fd is atcually valid, for error recovery */ 1583/* check whether the given fd is actually valid, for error recovery */
903inline_size int 1584inline_size int ecb_cold
904fd_valid (int fd) 1585fd_valid (int fd)
905{ 1586{
906#ifdef _WIN32 1587#ifdef _WIN32
907 return _get_osfhandle (fd) != -1; 1588 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
908#else 1589#else
909 return fcntl (fd, F_GETFD) != -1; 1590 return fcntl (fd, F_GETFD) != -1;
910#endif 1591#endif
911} 1592}
912 1593
913/* called on EBADF to verify fds */ 1594/* called on EBADF to verify fds */
914static void noinline 1595static void noinline ecb_cold
915fd_ebadf (EV_P) 1596fd_ebadf (EV_P)
916{ 1597{
917 int fd; 1598 int fd;
918 1599
919 for (fd = 0; fd < anfdmax; ++fd) 1600 for (fd = 0; fd < anfdmax; ++fd)
… …
921 if (!fd_valid (fd) && errno == EBADF) 1602 if (!fd_valid (fd) && errno == EBADF)
922 fd_kill (EV_A_ fd); 1603 fd_kill (EV_A_ fd);
923} 1604}
924 1605
925/* called on ENOMEM in select/poll to kill some fds and retry */ 1606/* called on ENOMEM in select/poll to kill some fds and retry */
926static void noinline 1607static void noinline ecb_cold
927fd_enomem (EV_P) 1608fd_enomem (EV_P)
928{ 1609{
929 int fd; 1610 int fd;
930 1611
931 for (fd = anfdmax; fd--; ) 1612 for (fd = anfdmax; fd--; )
932 if (anfds [fd].events) 1613 if (anfds [fd].events)
933 { 1614 {
934 fd_kill (EV_A_ fd); 1615 fd_kill (EV_A_ fd);
935 return; 1616 break;
936 } 1617 }
937} 1618}
938 1619
939/* usually called after fork if backend needs to re-arm all fds from scratch */ 1620/* usually called after fork if backend needs to re-arm all fds from scratch */
940static void noinline 1621static void noinline
… …
949 anfds [fd].emask = 0; 1630 anfds [fd].emask = 0;
950 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1631 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
951 } 1632 }
952} 1633}
953 1634
1635/* used to prepare libev internal fd's */
1636/* this is not fork-safe */
1637inline_speed void
1638fd_intern (int fd)
1639{
1640#ifdef _WIN32
1641 unsigned long arg = 1;
1642 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1643#else
1644 fcntl (fd, F_SETFD, FD_CLOEXEC);
1645 fcntl (fd, F_SETFL, O_NONBLOCK);
1646#endif
1647}
1648
954/*****************************************************************************/ 1649/*****************************************************************************/
955 1650
956/* 1651/*
957 * the heap functions want a real array index. array index 0 uis guaranteed to not 1652 * 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 1653 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
959 * the branching factor of the d-tree. 1654 * the branching factor of the d-tree.
960 */ 1655 */
961 1656
962/* 1657/*
… …
1030 1725
1031 for (;;) 1726 for (;;)
1032 { 1727 {
1033 int c = k << 1; 1728 int c = k << 1;
1034 1729
1035 if (c > N + HEAP0 - 1) 1730 if (c >= N + HEAP0)
1036 break; 1731 break;
1037 1732
1038 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1733 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1039 ? 1 : 0; 1734 ? 1 : 0;
1040 1735
… …
1076 1771
1077/* move an element suitably so it is in a correct place */ 1772/* move an element suitably so it is in a correct place */
1078inline_size void 1773inline_size void
1079adjustheap (ANHE *heap, int N, int k) 1774adjustheap (ANHE *heap, int N, int k)
1080{ 1775{
1081 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1776 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1082 upheap (heap, k); 1777 upheap (heap, k);
1083 else 1778 else
1084 downheap (heap, N, k); 1779 downheap (heap, N, k);
1085} 1780}
1086 1781
… …
1099/*****************************************************************************/ 1794/*****************************************************************************/
1100 1795
1101/* associate signal watchers to a signal signal */ 1796/* associate signal watchers to a signal signal */
1102typedef struct 1797typedef struct
1103{ 1798{
1799 EV_ATOMIC_T pending;
1800#if EV_MULTIPLICITY
1801 EV_P;
1802#endif
1104 WL head; 1803 WL head;
1105 EV_ATOMIC_T gotsig;
1106} ANSIG; 1804} ANSIG;
1107 1805
1108static ANSIG *signals; 1806static ANSIG signals [EV_NSIG - 1];
1109static int signalmax;
1110
1111static EV_ATOMIC_T gotsig;
1112 1807
1113/*****************************************************************************/ 1808/*****************************************************************************/
1114 1809
1115/* used to prepare libev internal fd's */ 1810#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 1811
1129static void noinline 1812static void noinline ecb_cold
1130evpipe_init (EV_P) 1813evpipe_init (EV_P)
1131{ 1814{
1132 if (!ev_is_active (&pipe_w)) 1815 if (!ev_is_active (&pipe_w))
1133 { 1816 {
1134#if EV_USE_EVENTFD 1817# if EV_USE_EVENTFD
1135 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1818 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1136 if (evfd < 0 && errno == EINVAL) 1819 if (evfd < 0 && errno == EINVAL)
1137 evfd = eventfd (0, 0); 1820 evfd = eventfd (0, 0);
1138 1821
1139 if (evfd >= 0) 1822 if (evfd >= 0)
… …
1141 evpipe [0] = -1; 1824 evpipe [0] = -1;
1142 fd_intern (evfd); /* doing it twice doesn't hurt */ 1825 fd_intern (evfd); /* doing it twice doesn't hurt */
1143 ev_io_set (&pipe_w, evfd, EV_READ); 1826 ev_io_set (&pipe_w, evfd, EV_READ);
1144 } 1827 }
1145 else 1828 else
1146#endif 1829# endif
1147 { 1830 {
1148 while (pipe (evpipe)) 1831 while (pipe (evpipe))
1149 ev_syserr ("(libev) error creating signal/async pipe"); 1832 ev_syserr ("(libev) error creating signal/async pipe");
1150 1833
1151 fd_intern (evpipe [0]); 1834 fd_intern (evpipe [0]);
… …
1156 ev_io_start (EV_A_ &pipe_w); 1839 ev_io_start (EV_A_ &pipe_w);
1157 ev_unref (EV_A); /* watcher should not keep loop alive */ 1840 ev_unref (EV_A); /* watcher should not keep loop alive */
1158 } 1841 }
1159} 1842}
1160 1843
1161inline_size void 1844inline_speed void
1162evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1845evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1163{ 1846{
1164 if (!*flag) 1847 if (expect_true (*flag))
1848 return;
1849
1850 *flag = 1;
1851
1852 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1853
1854 pipe_write_skipped = 1;
1855
1856 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1857
1858 if (pipe_write_wanted)
1165 { 1859 {
1860 int old_errno;
1861
1862 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1863
1166 int old_errno = errno; /* save errno because write might clobber it */ 1864 old_errno = errno; /* save errno because write will clobber it */
1167
1168 *flag = 1;
1169 1865
1170#if EV_USE_EVENTFD 1866#if EV_USE_EVENTFD
1171 if (evfd >= 0) 1867 if (evfd >= 0)
1172 { 1868 {
1173 uint64_t counter = 1; 1869 uint64_t counter = 1;
1174 write (evfd, &counter, sizeof (uint64_t)); 1870 write (evfd, &counter, sizeof (uint64_t));
1175 } 1871 }
1176 else 1872 else
1177#endif 1873#endif
1874 {
1875 /* win32 people keep sending patches that change this write() to send() */
1876 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1877 /* so when you think this write should be a send instead, please find out */
1878 /* where your send() is from - it's definitely not the microsoft send, and */
1879 /* tell me. thank you. */
1880 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1881 /* check the ev documentation on how to use this flag */
1178 write (evpipe [1], &old_errno, 1); 1882 write (evpipe [1], &(evpipe [1]), 1);
1883 }
1179 1884
1180 errno = old_errno; 1885 errno = old_errno;
1181 } 1886 }
1182} 1887}
1183 1888
1184/* called whenever the libev signal pipe */ 1889/* called whenever the libev signal pipe */
1185/* got some events (signal, async) */ 1890/* got some events (signal, async) */
1186static void 1891static void
1187pipecb (EV_P_ ev_io *iow, int revents) 1892pipecb (EV_P_ ev_io *iow, int revents)
1188{ 1893{
1894 int i;
1895
1896 if (revents & EV_READ)
1897 {
1189#if EV_USE_EVENTFD 1898#if EV_USE_EVENTFD
1190 if (evfd >= 0) 1899 if (evfd >= 0)
1191 { 1900 {
1192 uint64_t counter; 1901 uint64_t counter;
1193 read (evfd, &counter, sizeof (uint64_t)); 1902 read (evfd, &counter, sizeof (uint64_t));
1194 } 1903 }
1195 else 1904 else
1196#endif 1905#endif
1197 { 1906 {
1198 char dummy; 1907 char dummy;
1908 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1199 read (evpipe [0], &dummy, 1); 1909 read (evpipe [0], &dummy, 1);
1910 }
1911 }
1912
1913 pipe_write_skipped = 0;
1914
1915#if EV_SIGNAL_ENABLE
1916 if (sig_pending)
1200 } 1917 {
1918 sig_pending = 0;
1201 1919
1202 if (gotsig && ev_is_default_loop (EV_A)) 1920 for (i = EV_NSIG - 1; i--; )
1203 { 1921 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); 1922 ev_feed_signal_event (EV_A_ i + 1);
1210 } 1923 }
1924#endif
1211 1925
1212#if EV_ASYNC_ENABLE 1926#if EV_ASYNC_ENABLE
1213 if (gotasync) 1927 if (async_pending)
1214 { 1928 {
1215 int i; 1929 async_pending = 0;
1216 gotasync = 0;
1217 1930
1218 for (i = asynccnt; i--; ) 1931 for (i = asynccnt; i--; )
1219 if (asyncs [i]->sent) 1932 if (asyncs [i]->sent)
1220 { 1933 {
1221 asyncs [i]->sent = 0; 1934 asyncs [i]->sent = 0;
… …
1225#endif 1938#endif
1226} 1939}
1227 1940
1228/*****************************************************************************/ 1941/*****************************************************************************/
1229 1942
1943void
1944ev_feed_signal (int signum)
1945{
1946#if EV_MULTIPLICITY
1947 EV_P = signals [signum - 1].loop;
1948
1949 if (!EV_A)
1950 return;
1951#endif
1952
1953 if (!ev_active (&pipe_w))
1954 return;
1955
1956 signals [signum - 1].pending = 1;
1957 evpipe_write (EV_A_ &sig_pending);
1958}
1959
1230static void 1960static void
1231ev_sighandler (int signum) 1961ev_sighandler (int signum)
1232{ 1962{
1233#if EV_MULTIPLICITY
1234 struct ev_loop *loop = &default_loop_struct;
1235#endif
1236
1237#if _WIN32 1963#ifdef _WIN32
1238 signal (signum, ev_sighandler); 1964 signal (signum, ev_sighandler);
1239#endif 1965#endif
1240 1966
1241 signals [signum - 1].gotsig = 1; 1967 ev_feed_signal (signum);
1242 evpipe_write (EV_A_ &gotsig);
1243} 1968}
1244 1969
1245void noinline 1970void noinline
1246ev_feed_signal_event (EV_P_ int signum) 1971ev_feed_signal_event (EV_P_ int signum)
1247{ 1972{
1248 WL w; 1973 WL w;
1249 1974
1975 if (expect_false (signum <= 0 || signum > EV_NSIG))
1976 return;
1977
1978 --signum;
1979
1250#if EV_MULTIPLICITY 1980#if EV_MULTIPLICITY
1251 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1981 /* it is permissible to try to feed a signal to the wrong loop */
1252#endif 1982 /* or, likely more useful, feeding a signal nobody is waiting for */
1253 1983
1254 --signum; 1984 if (expect_false (signals [signum].loop != EV_A))
1255
1256 if (signum < 0 || signum >= signalmax)
1257 return; 1985 return;
1986#endif
1258 1987
1259 signals [signum].gotsig = 0; 1988 signals [signum].pending = 0;
1260 1989
1261 for (w = signals [signum].head; w; w = w->next) 1990 for (w = signals [signum].head; w; w = w->next)
1262 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1991 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1263} 1992}
1264 1993
1265#if EV_USE_SIGNALFD 1994#if EV_USE_SIGNALFD
1266static void 1995static void
1267sigfdcb (EV_P_ ev_io *iow, int revents) 1996sigfdcb (EV_P_ ev_io *iow, int revents)
1268{ 1997{
1269 struct signalfd_siginfo si[4], *sip; 1998 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1270 1999
1271 for (;;) 2000 for (;;)
1272 { 2001 {
1273 ssize_t res = read (sigfd, si, sizeof (si)); 2002 ssize_t res = read (sigfd, si, sizeof (si));
1274 2003
… …
1280 break; 2009 break;
1281 } 2010 }
1282} 2011}
1283#endif 2012#endif
1284 2013
2014#endif
2015
1285/*****************************************************************************/ 2016/*****************************************************************************/
1286 2017
2018#if EV_CHILD_ENABLE
1287static WL childs [EV_PID_HASHSIZE]; 2019static WL childs [EV_PID_HASHSIZE];
1288
1289#ifndef _WIN32
1290 2020
1291static ev_signal childev; 2021static ev_signal childev;
1292 2022
1293#ifndef WIFCONTINUED 2023#ifndef WIFCONTINUED
1294# define WIFCONTINUED(status) 0 2024# define WIFCONTINUED(status) 0
… …
1299child_reap (EV_P_ int chain, int pid, int status) 2029child_reap (EV_P_ int chain, int pid, int status)
1300{ 2030{
1301 ev_child *w; 2031 ev_child *w;
1302 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2032 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1303 2033
1304 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2034 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1305 { 2035 {
1306 if ((w->pid == pid || !w->pid) 2036 if ((w->pid == pid || !w->pid)
1307 && (!traced || (w->flags & 1))) 2037 && (!traced || (w->flags & 1)))
1308 { 2038 {
1309 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2039 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 */ 2064 /* 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 */ 2065 /* 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); 2066 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1337 2067
1338 child_reap (EV_A_ pid, pid, status); 2068 child_reap (EV_A_ pid, pid, status);
1339 if (EV_PID_HASHSIZE > 1) 2069 if ((EV_PID_HASHSIZE) > 1)
1340 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2070 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1341} 2071}
1342 2072
1343#endif 2073#endif
1344 2074
1345/*****************************************************************************/ 2075/*****************************************************************************/
1346 2076
2077#if EV_USE_IOCP
2078# include "ev_iocp.c"
2079#endif
1347#if EV_USE_PORT 2080#if EV_USE_PORT
1348# include "ev_port.c" 2081# include "ev_port.c"
1349#endif 2082#endif
1350#if EV_USE_KQUEUE 2083#if EV_USE_KQUEUE
1351# include "ev_kqueue.c" 2084# include "ev_kqueue.c"
… …
1358#endif 2091#endif
1359#if EV_USE_SELECT 2092#if EV_USE_SELECT
1360# include "ev_select.c" 2093# include "ev_select.c"
1361#endif 2094#endif
1362 2095
1363int 2096int ecb_cold
1364ev_version_major (void) 2097ev_version_major (void)
1365{ 2098{
1366 return EV_VERSION_MAJOR; 2099 return EV_VERSION_MAJOR;
1367} 2100}
1368 2101
1369int 2102int ecb_cold
1370ev_version_minor (void) 2103ev_version_minor (void)
1371{ 2104{
1372 return EV_VERSION_MINOR; 2105 return EV_VERSION_MINOR;
1373} 2106}
1374 2107
1375/* return true if we are running with elevated privileges and should ignore env variables */ 2108/* return true if we are running with elevated privileges and should ignore env variables */
1376int inline_size 2109int inline_size ecb_cold
1377enable_secure (void) 2110enable_secure (void)
1378{ 2111{
1379#ifdef _WIN32 2112#ifdef _WIN32
1380 return 0; 2113 return 0;
1381#else 2114#else
1382 return getuid () != geteuid () 2115 return getuid () != geteuid ()
1383 || getgid () != getegid (); 2116 || getgid () != getegid ();
1384#endif 2117#endif
1385} 2118}
1386 2119
1387unsigned int 2120unsigned int ecb_cold
1388ev_supported_backends (void) 2121ev_supported_backends (void)
1389{ 2122{
1390 unsigned int flags = 0; 2123 unsigned int flags = 0;
1391 2124
1392 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2125 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1396 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2129 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1397 2130
1398 return flags; 2131 return flags;
1399} 2132}
1400 2133
1401unsigned int 2134unsigned int ecb_cold
1402ev_recommended_backends (void) 2135ev_recommended_backends (void)
1403{ 2136{
1404 unsigned int flags = ev_supported_backends (); 2137 unsigned int flags = ev_supported_backends ();
1405 2138
1406#ifndef __NetBSD__ 2139#ifndef __NetBSD__
… …
1411#ifdef __APPLE__ 2144#ifdef __APPLE__
1412 /* only select works correctly on that "unix-certified" platform */ 2145 /* only select works correctly on that "unix-certified" platform */
1413 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2146 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1414 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2147 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1415#endif 2148#endif
2149#ifdef __FreeBSD__
2150 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2151#endif
1416 2152
1417 return flags; 2153 return flags;
1418} 2154}
1419 2155
1420unsigned int 2156unsigned int ecb_cold
1421ev_embeddable_backends (void) 2157ev_embeddable_backends (void)
1422{ 2158{
1423 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2159 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1424 2160
1425 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2161 /* 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 */ 2162 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1427 flags &= ~EVBACKEND_EPOLL; 2163 flags &= ~EVBACKEND_EPOLL;
1428 2164
1429 return flags; 2165 return flags;
1430} 2166}
1431 2167
1432unsigned int 2168unsigned int
1433ev_backend (EV_P) 2169ev_backend (EV_P)
1434{ 2170{
1435 return backend; 2171 return backend;
1436} 2172}
1437 2173
1438#if EV_MINIMAL < 2 2174#if EV_FEATURE_API
1439unsigned int 2175unsigned int
1440ev_loop_count (EV_P) 2176ev_iteration (EV_P)
1441{ 2177{
1442 return loop_count; 2178 return loop_count;
1443} 2179}
1444 2180
1445unsigned int 2181unsigned int
1446ev_loop_depth (EV_P) 2182ev_depth (EV_P)
1447{ 2183{
1448 return loop_depth; 2184 return loop_depth;
1449} 2185}
1450 2186
1451void 2187void
… …
1470ev_userdata (EV_P) 2206ev_userdata (EV_P)
1471{ 2207{
1472 return userdata; 2208 return userdata;
1473} 2209}
1474 2210
2211void
1475void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2212ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1476{ 2213{
1477 invoke_cb = invoke_pending_cb; 2214 invoke_cb = invoke_pending_cb;
1478} 2215}
1479 2216
2217void
1480void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2218ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1481{ 2219{
1482 release_cb = release; 2220 release_cb = release;
1483 acquire_cb = acquire; 2221 acquire_cb = acquire;
1484} 2222}
1485#endif 2223#endif
1486 2224
1487/* initialise a loop structure, must be zero-initialised */ 2225/* initialise a loop structure, must be zero-initialised */
1488static void noinline 2226static void noinline ecb_cold
1489loop_init (EV_P_ unsigned int flags) 2227loop_init (EV_P_ unsigned int flags)
1490{ 2228{
1491 if (!backend) 2229 if (!backend)
1492 { 2230 {
2231 origflags = flags;
2232
1493#if EV_USE_REALTIME 2233#if EV_USE_REALTIME
1494 if (!have_realtime) 2234 if (!have_realtime)
1495 { 2235 {
1496 struct timespec ts; 2236 struct timespec ts;
1497 2237
… …
1508 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2248 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1509 have_monotonic = 1; 2249 have_monotonic = 1;
1510 } 2250 }
1511#endif 2251#endif
1512 2252
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 */ 2253 /* pid check not overridable via env */
1534#ifndef _WIN32 2254#ifndef _WIN32
1535 if (flags & EVFLAG_FORKCHECK) 2255 if (flags & EVFLAG_FORKCHECK)
1536 curpid = getpid (); 2256 curpid = getpid ();
1537#endif 2257#endif
… …
1539 if (!(flags & EVFLAG_NOENV) 2259 if (!(flags & EVFLAG_NOENV)
1540 && !enable_secure () 2260 && !enable_secure ()
1541 && getenv ("LIBEV_FLAGS")) 2261 && getenv ("LIBEV_FLAGS"))
1542 flags = atoi (getenv ("LIBEV_FLAGS")); 2262 flags = atoi (getenv ("LIBEV_FLAGS"));
1543 2263
1544 if (!(flags & 0x0000ffffU)) 2264 ev_rt_now = ev_time ();
2265 mn_now = get_clock ();
2266 now_floor = mn_now;
2267 rtmn_diff = ev_rt_now - mn_now;
2268#if EV_FEATURE_API
2269 invoke_cb = ev_invoke_pending;
2270#endif
2271
2272 io_blocktime = 0.;
2273 timeout_blocktime = 0.;
2274 backend = 0;
2275 backend_fd = -1;
2276 sig_pending = 0;
2277#if EV_ASYNC_ENABLE
2278 async_pending = 0;
2279#endif
2280 pipe_write_skipped = 0;
2281 pipe_write_wanted = 0;
2282#if EV_USE_INOTIFY
2283 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2284#endif
2285#if EV_USE_SIGNALFD
2286 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2287#endif
2288
2289 if (!(flags & EVBACKEND_MASK))
1545 flags |= ev_recommended_backends (); 2290 flags |= ev_recommended_backends ();
1546 2291
2292#if EV_USE_IOCP
2293 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2294#endif
1547#if EV_USE_PORT 2295#if EV_USE_PORT
1548 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2296 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1549#endif 2297#endif
1550#if EV_USE_KQUEUE 2298#if EV_USE_KQUEUE
1551 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2299 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1560 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2308 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1561#endif 2309#endif
1562 2310
1563 ev_prepare_init (&pending_w, pendingcb); 2311 ev_prepare_init (&pending_w, pendingcb);
1564 2312
2313#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1565 ev_init (&pipe_w, pipecb); 2314 ev_init (&pipe_w, pipecb);
1566 ev_set_priority (&pipe_w, EV_MAXPRI); 2315 ev_set_priority (&pipe_w, EV_MAXPRI);
2316#endif
1567 } 2317 }
1568} 2318}
1569 2319
1570/* free up a loop structure */ 2320/* free up a loop structure */
1571static void noinline 2321void ecb_cold
1572loop_destroy (EV_P) 2322ev_loop_destroy (EV_P)
1573{ 2323{
1574 int i; 2324 int i;
2325
2326#if EV_MULTIPLICITY
2327 /* mimic free (0) */
2328 if (!EV_A)
2329 return;
2330#endif
2331
2332#if EV_CLEANUP_ENABLE
2333 /* queue cleanup watchers (and execute them) */
2334 if (expect_false (cleanupcnt))
2335 {
2336 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2337 EV_INVOKE_PENDING;
2338 }
2339#endif
2340
2341#if EV_CHILD_ENABLE
2342 if (ev_is_active (&childev))
2343 {
2344 ev_ref (EV_A); /* child watcher */
2345 ev_signal_stop (EV_A_ &childev);
2346 }
2347#endif
1575 2348
1576 if (ev_is_active (&pipe_w)) 2349 if (ev_is_active (&pipe_w))
1577 { 2350 {
1578 /*ev_ref (EV_A);*/ 2351 /*ev_ref (EV_A);*/
1579 /*ev_io_stop (EV_A_ &pipe_w);*/ 2352 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1583 close (evfd); 2356 close (evfd);
1584#endif 2357#endif
1585 2358
1586 if (evpipe [0] >= 0) 2359 if (evpipe [0] >= 0)
1587 { 2360 {
1588 close (evpipe [0]); 2361 EV_WIN32_CLOSE_FD (evpipe [0]);
1589 close (evpipe [1]); 2362 EV_WIN32_CLOSE_FD (evpipe [1]);
1590 } 2363 }
1591 } 2364 }
1592 2365
1593#if EV_USE_SIGNALFD 2366#if EV_USE_SIGNALFD
1594 if (ev_is_active (&sigfd_w)) 2367 if (ev_is_active (&sigfd_w))
1595 {
1596 /*ev_ref (EV_A);*/
1597 /*ev_io_stop (EV_A_ &sigfd_w);*/
1598
1599 close (sigfd); 2368 close (sigfd);
1600 }
1601#endif 2369#endif
1602 2370
1603#if EV_USE_INOTIFY 2371#if EV_USE_INOTIFY
1604 if (fs_fd >= 0) 2372 if (fs_fd >= 0)
1605 close (fs_fd); 2373 close (fs_fd);
1606#endif 2374#endif
1607 2375
1608 if (backend_fd >= 0) 2376 if (backend_fd >= 0)
1609 close (backend_fd); 2377 close (backend_fd);
1610 2378
2379#if EV_USE_IOCP
2380 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2381#endif
1611#if EV_USE_PORT 2382#if EV_USE_PORT
1612 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2383 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1613#endif 2384#endif
1614#if EV_USE_KQUEUE 2385#if EV_USE_KQUEUE
1615 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2386 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1630#if EV_IDLE_ENABLE 2401#if EV_IDLE_ENABLE
1631 array_free (idle, [i]); 2402 array_free (idle, [i]);
1632#endif 2403#endif
1633 } 2404 }
1634 2405
1635 ev_free (anfds); anfdmax = 0; 2406 ev_free (anfds); anfds = 0; anfdmax = 0;
1636 2407
1637 /* have to use the microsoft-never-gets-it-right macro */ 2408 /* have to use the microsoft-never-gets-it-right macro */
1638 array_free (rfeed, EMPTY); 2409 array_free (rfeed, EMPTY);
1639 array_free (fdchange, EMPTY); 2410 array_free (fdchange, EMPTY);
1640 array_free (timer, EMPTY); 2411 array_free (timer, EMPTY);
… …
1642 array_free (periodic, EMPTY); 2413 array_free (periodic, EMPTY);
1643#endif 2414#endif
1644#if EV_FORK_ENABLE 2415#if EV_FORK_ENABLE
1645 array_free (fork, EMPTY); 2416 array_free (fork, EMPTY);
1646#endif 2417#endif
2418#if EV_CLEANUP_ENABLE
2419 array_free (cleanup, EMPTY);
2420#endif
1647 array_free (prepare, EMPTY); 2421 array_free (prepare, EMPTY);
1648 array_free (check, EMPTY); 2422 array_free (check, EMPTY);
1649#if EV_ASYNC_ENABLE 2423#if EV_ASYNC_ENABLE
1650 array_free (async, EMPTY); 2424 array_free (async, EMPTY);
1651#endif 2425#endif
1652 2426
1653 backend = 0; 2427 backend = 0;
2428
2429#if EV_MULTIPLICITY
2430 if (ev_is_default_loop (EV_A))
2431#endif
2432 ev_default_loop_ptr = 0;
2433#if EV_MULTIPLICITY
2434 else
2435 ev_free (EV_A);
2436#endif
1654} 2437}
1655 2438
1656#if EV_USE_INOTIFY 2439#if EV_USE_INOTIFY
1657inline_size void infy_fork (EV_P); 2440inline_size void infy_fork (EV_P);
1658#endif 2441#endif
… …
1673 infy_fork (EV_A); 2456 infy_fork (EV_A);
1674#endif 2457#endif
1675 2458
1676 if (ev_is_active (&pipe_w)) 2459 if (ev_is_active (&pipe_w))
1677 { 2460 {
1678 /* this "locks" the handlers against writing to the pipe */ 2461 /* 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 2462
1685 ev_ref (EV_A); 2463 ev_ref (EV_A);
1686 ev_io_stop (EV_A_ &pipe_w); 2464 ev_io_stop (EV_A_ &pipe_w);
1687 2465
1688#if EV_USE_EVENTFD 2466#if EV_USE_EVENTFD
… …
1690 close (evfd); 2468 close (evfd);
1691#endif 2469#endif
1692 2470
1693 if (evpipe [0] >= 0) 2471 if (evpipe [0] >= 0)
1694 { 2472 {
1695 close (evpipe [0]); 2473 EV_WIN32_CLOSE_FD (evpipe [0]);
1696 close (evpipe [1]); 2474 EV_WIN32_CLOSE_FD (evpipe [1]);
1697 } 2475 }
1698 2476
2477#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1699 evpipe_init (EV_A); 2478 evpipe_init (EV_A);
1700 /* now iterate over everything, in case we missed something */ 2479 /* now iterate over everything, in case we missed something */
1701 pipecb (EV_A_ &pipe_w, EV_READ); 2480 pipecb (EV_A_ &pipe_w, EV_READ);
2481#endif
1702 } 2482 }
1703 2483
1704 postfork = 0; 2484 postfork = 0;
1705} 2485}
1706 2486
1707#if EV_MULTIPLICITY 2487#if EV_MULTIPLICITY
1708 2488
1709struct ev_loop * 2489struct ev_loop * ecb_cold
1710ev_loop_new (unsigned int flags) 2490ev_loop_new (unsigned int flags)
1711{ 2491{
1712 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2492 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1713 2493
1714 memset (loop, 0, sizeof (struct ev_loop)); 2494 memset (EV_A, 0, sizeof (struct ev_loop));
1715 loop_init (EV_A_ flags); 2495 loop_init (EV_A_ flags);
1716 2496
1717 if (ev_backend (EV_A)) 2497 if (ev_backend (EV_A))
1718 return loop; 2498 return EV_A;
1719 2499
2500 ev_free (EV_A);
1720 return 0; 2501 return 0;
1721} 2502}
1722 2503
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 */ 2504#endif /* multiplicity */
1736 2505
1737#if EV_VERIFY 2506#if EV_VERIFY
1738static void noinline 2507static void noinline ecb_cold
1739verify_watcher (EV_P_ W w) 2508verify_watcher (EV_P_ W w)
1740{ 2509{
1741 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2510 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1742 2511
1743 if (w->pending) 2512 if (w->pending)
1744 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2513 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1745} 2514}
1746 2515
1747static void noinline 2516static void noinline ecb_cold
1748verify_heap (EV_P_ ANHE *heap, int N) 2517verify_heap (EV_P_ ANHE *heap, int N)
1749{ 2518{
1750 int i; 2519 int i;
1751 2520
1752 for (i = HEAP0; i < N + HEAP0; ++i) 2521 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1757 2526
1758 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2527 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1759 } 2528 }
1760} 2529}
1761 2530
1762static void noinline 2531static void noinline ecb_cold
1763array_verify (EV_P_ W *ws, int cnt) 2532array_verify (EV_P_ W *ws, int cnt)
1764{ 2533{
1765 while (cnt--) 2534 while (cnt--)
1766 { 2535 {
1767 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2536 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1768 verify_watcher (EV_A_ ws [cnt]); 2537 verify_watcher (EV_A_ ws [cnt]);
1769 } 2538 }
1770} 2539}
1771#endif 2540#endif
1772 2541
1773#if EV_MINIMAL < 2 2542#if EV_FEATURE_API
1774void 2543void ecb_cold
1775ev_loop_verify (EV_P) 2544ev_verify (EV_P)
1776{ 2545{
1777#if EV_VERIFY 2546#if EV_VERIFY
1778 int i; 2547 int i;
1779 WL w; 2548 WL w;
1780 2549
… …
1814#if EV_FORK_ENABLE 2583#if EV_FORK_ENABLE
1815 assert (forkmax >= forkcnt); 2584 assert (forkmax >= forkcnt);
1816 array_verify (EV_A_ (W *)forks, forkcnt); 2585 array_verify (EV_A_ (W *)forks, forkcnt);
1817#endif 2586#endif
1818 2587
2588#if EV_CLEANUP_ENABLE
2589 assert (cleanupmax >= cleanupcnt);
2590 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2591#endif
2592
1819#if EV_ASYNC_ENABLE 2593#if EV_ASYNC_ENABLE
1820 assert (asyncmax >= asynccnt); 2594 assert (asyncmax >= asynccnt);
1821 array_verify (EV_A_ (W *)asyncs, asynccnt); 2595 array_verify (EV_A_ (W *)asyncs, asynccnt);
1822#endif 2596#endif
1823 2597
2598#if EV_PREPARE_ENABLE
1824 assert (preparemax >= preparecnt); 2599 assert (preparemax >= preparecnt);
1825 array_verify (EV_A_ (W *)prepares, preparecnt); 2600 array_verify (EV_A_ (W *)prepares, preparecnt);
2601#endif
1826 2602
2603#if EV_CHECK_ENABLE
1827 assert (checkmax >= checkcnt); 2604 assert (checkmax >= checkcnt);
1828 array_verify (EV_A_ (W *)checks, checkcnt); 2605 array_verify (EV_A_ (W *)checks, checkcnt);
2606#endif
1829 2607
1830# if 0 2608# if 0
2609#if EV_CHILD_ENABLE
1831 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2610 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) 2611 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2612#endif
1833# endif 2613# endif
1834#endif 2614#endif
1835} 2615}
1836#endif 2616#endif
1837 2617
1838#if EV_MULTIPLICITY 2618#if EV_MULTIPLICITY
1839struct ev_loop * 2619struct ev_loop * ecb_cold
1840ev_default_loop_init (unsigned int flags)
1841#else 2620#else
1842int 2621int
2622#endif
1843ev_default_loop (unsigned int flags) 2623ev_default_loop (unsigned int flags)
1844#endif
1845{ 2624{
1846 if (!ev_default_loop_ptr) 2625 if (!ev_default_loop_ptr)
1847 { 2626 {
1848#if EV_MULTIPLICITY 2627#if EV_MULTIPLICITY
1849 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2628 EV_P = ev_default_loop_ptr = &default_loop_struct;
1850#else 2629#else
1851 ev_default_loop_ptr = 1; 2630 ev_default_loop_ptr = 1;
1852#endif 2631#endif
1853 2632
1854 loop_init (EV_A_ flags); 2633 loop_init (EV_A_ flags);
1855 2634
1856 if (ev_backend (EV_A)) 2635 if (ev_backend (EV_A))
1857 { 2636 {
1858#ifndef _WIN32 2637#if EV_CHILD_ENABLE
1859 ev_signal_init (&childev, childcb, SIGCHLD); 2638 ev_signal_init (&childev, childcb, SIGCHLD);
1860 ev_set_priority (&childev, EV_MAXPRI); 2639 ev_set_priority (&childev, EV_MAXPRI);
1861 ev_signal_start (EV_A_ &childev); 2640 ev_signal_start (EV_A_ &childev);
1862 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2641 ev_unref (EV_A); /* child watcher should not keep loop alive */
1863#endif 2642#endif
… …
1868 2647
1869 return ev_default_loop_ptr; 2648 return ev_default_loop_ptr;
1870} 2649}
1871 2650
1872void 2651void
1873ev_default_destroy (void) 2652ev_loop_fork (EV_P)
1874{ 2653{
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 */ 2654 postfork = 1; /* must be in line with ev_default_fork */
1897} 2655}
1898 2656
1899/*****************************************************************************/ 2657/*****************************************************************************/
1900 2658
1901void 2659void
… …
1923 2681
1924 for (pri = NUMPRI; pri--; ) 2682 for (pri = NUMPRI; pri--; )
1925 while (pendingcnt [pri]) 2683 while (pendingcnt [pri])
1926 { 2684 {
1927 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2685 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 2686
1932 p->w->pending = 0; 2687 p->w->pending = 0;
1933 EV_CB_INVOKE (p->w, p->events); 2688 EV_CB_INVOKE (p->w, p->events);
1934 EV_FREQUENT_CHECK; 2689 EV_FREQUENT_CHECK;
1935 } 2690 }
… …
1992 EV_FREQUENT_CHECK; 2747 EV_FREQUENT_CHECK;
1993 feed_reverse (EV_A_ (W)w); 2748 feed_reverse (EV_A_ (W)w);
1994 } 2749 }
1995 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2750 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1996 2751
1997 feed_reverse_done (EV_A_ EV_TIMEOUT); 2752 feed_reverse_done (EV_A_ EV_TIMER);
1998 } 2753 }
1999} 2754}
2000 2755
2001#if EV_PERIODIC_ENABLE 2756#if EV_PERIODIC_ENABLE
2757
2758static void noinline
2759periodic_recalc (EV_P_ ev_periodic *w)
2760{
2761 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2762 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2763
2764 /* the above almost always errs on the low side */
2765 while (at <= ev_rt_now)
2766 {
2767 ev_tstamp nat = at + w->interval;
2768
2769 /* when resolution fails us, we use ev_rt_now */
2770 if (expect_false (nat == at))
2771 {
2772 at = ev_rt_now;
2773 break;
2774 }
2775
2776 at = nat;
2777 }
2778
2779 ev_at (w) = at;
2780}
2781
2002/* make periodics pending */ 2782/* make periodics pending */
2003inline_size void 2783inline_size void
2004periodics_reify (EV_P) 2784periodics_reify (EV_P)
2005{ 2785{
2006 EV_FREQUENT_CHECK; 2786 EV_FREQUENT_CHECK;
… …
2025 ANHE_at_cache (periodics [HEAP0]); 2805 ANHE_at_cache (periodics [HEAP0]);
2026 downheap (periodics, periodiccnt, HEAP0); 2806 downheap (periodics, periodiccnt, HEAP0);
2027 } 2807 }
2028 else if (w->interval) 2808 else if (w->interval)
2029 { 2809 {
2030 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2810 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]); 2811 ANHE_at_cache (periodics [HEAP0]);
2045 downheap (periodics, periodiccnt, HEAP0); 2812 downheap (periodics, periodiccnt, HEAP0);
2046 } 2813 }
2047 else 2814 else
2048 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2815 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2055 feed_reverse_done (EV_A_ EV_PERIODIC); 2822 feed_reverse_done (EV_A_ EV_PERIODIC);
2056 } 2823 }
2057} 2824}
2058 2825
2059/* simply recalculate all periodics */ 2826/* simply recalculate all periodics */
2060/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2827/* TODO: maybe ensure that at least one event happens when jumping forward? */
2061static void noinline 2828static void noinline ecb_cold
2062periodics_reschedule (EV_P) 2829periodics_reschedule (EV_P)
2063{ 2830{
2064 int i; 2831 int i;
2065 2832
2066 /* adjust periodics after time jump */ 2833 /* adjust periodics after time jump */
… …
2069 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2836 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2070 2837
2071 if (w->reschedule_cb) 2838 if (w->reschedule_cb)
2072 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2839 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073 else if (w->interval) 2840 else if (w->interval)
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2841 periodic_recalc (EV_A_ w);
2075 2842
2076 ANHE_at_cache (periodics [i]); 2843 ANHE_at_cache (periodics [i]);
2077 } 2844 }
2078 2845
2079 reheap (periodics, periodiccnt); 2846 reheap (periodics, periodiccnt);
2080} 2847}
2081#endif 2848#endif
2082 2849
2083/* adjust all timers by a given offset */ 2850/* adjust all timers by a given offset */
2084static void noinline 2851static void noinline ecb_cold
2085timers_reschedule (EV_P_ ev_tstamp adjust) 2852timers_reschedule (EV_P_ ev_tstamp adjust)
2086{ 2853{
2087 int i; 2854 int i;
2088 2855
2089 for (i = 0; i < timercnt; ++i) 2856 for (i = 0; i < timercnt; ++i)
… …
2093 ANHE_at_cache (*he); 2860 ANHE_at_cache (*he);
2094 } 2861 }
2095} 2862}
2096 2863
2097/* fetch new monotonic and realtime times from the kernel */ 2864/* fetch new monotonic and realtime times from the kernel */
2098/* also detetc if there was a timejump, and act accordingly */ 2865/* also detect if there was a timejump, and act accordingly */
2099inline_speed void 2866inline_speed void
2100time_update (EV_P_ ev_tstamp max_block) 2867time_update (EV_P_ ev_tstamp max_block)
2101{ 2868{
2102#if EV_USE_MONOTONIC 2869#if EV_USE_MONOTONIC
2103 if (expect_true (have_monotonic)) 2870 if (expect_true (have_monotonic))
… …
2126 * doesn't hurt either as we only do this on time-jumps or 2893 * doesn't hurt either as we only do this on time-jumps or
2127 * in the unlikely event of having been preempted here. 2894 * in the unlikely event of having been preempted here.
2128 */ 2895 */
2129 for (i = 4; --i; ) 2896 for (i = 4; --i; )
2130 { 2897 {
2898 ev_tstamp diff;
2131 rtmn_diff = ev_rt_now - mn_now; 2899 rtmn_diff = ev_rt_now - mn_now;
2132 2900
2901 diff = odiff - rtmn_diff;
2902
2133 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2903 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2134 return; /* all is well */ 2904 return; /* all is well */
2135 2905
2136 ev_rt_now = ev_time (); 2906 ev_rt_now = ev_time ();
2137 mn_now = get_clock (); 2907 mn_now = get_clock ();
2138 now_floor = mn_now; 2908 now_floor = mn_now;
… …
2161 mn_now = ev_rt_now; 2931 mn_now = ev_rt_now;
2162 } 2932 }
2163} 2933}
2164 2934
2165void 2935void
2166ev_loop (EV_P_ int flags) 2936ev_run (EV_P_ int flags)
2167{ 2937{
2168#if EV_MINIMAL < 2 2938#if EV_FEATURE_API
2169 ++loop_depth; 2939 ++loop_depth;
2170#endif 2940#endif
2171 2941
2172 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2942 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2173 2943
2174 loop_done = EVUNLOOP_CANCEL; 2944 loop_done = EVBREAK_CANCEL;
2175 2945
2176 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2946 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2177 2947
2178 do 2948 do
2179 { 2949 {
2180#if EV_VERIFY >= 2 2950#if EV_VERIFY >= 2
2181 ev_loop_verify (EV_A); 2951 ev_verify (EV_A);
2182#endif 2952#endif
2183 2953
2184#ifndef _WIN32 2954#ifndef _WIN32
2185 if (expect_false (curpid)) /* penalise the forking check even more */ 2955 if (expect_false (curpid)) /* penalise the forking check even more */
2186 if (expect_false (getpid () != curpid)) 2956 if (expect_false (getpid () != curpid))
… …
2198 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2968 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2199 EV_INVOKE_PENDING; 2969 EV_INVOKE_PENDING;
2200 } 2970 }
2201#endif 2971#endif
2202 2972
2973#if EV_PREPARE_ENABLE
2203 /* queue prepare watchers (and execute them) */ 2974 /* queue prepare watchers (and execute them) */
2204 if (expect_false (preparecnt)) 2975 if (expect_false (preparecnt))
2205 { 2976 {
2206 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2977 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2207 EV_INVOKE_PENDING; 2978 EV_INVOKE_PENDING;
2208 } 2979 }
2980#endif
2209 2981
2210 if (expect_false (loop_done)) 2982 if (expect_false (loop_done))
2211 break; 2983 break;
2212 2984
2213 /* we might have forked, so reify kernel state if necessary */ 2985 /* we might have forked, so reify kernel state if necessary */
… …
2220 /* calculate blocking time */ 2992 /* calculate blocking time */
2221 { 2993 {
2222 ev_tstamp waittime = 0.; 2994 ev_tstamp waittime = 0.;
2223 ev_tstamp sleeptime = 0.; 2995 ev_tstamp sleeptime = 0.;
2224 2996
2997 /* remember old timestamp for io_blocktime calculation */
2998 ev_tstamp prev_mn_now = mn_now;
2999
3000 /* update time to cancel out callback processing overhead */
3001 time_update (EV_A_ 1e100);
3002
3003 /* from now on, we want a pipe-wake-up */
3004 pipe_write_wanted = 1;
3005
3006 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3007
2225 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3008 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2226 { 3009 {
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; 3010 waittime = MAX_BLOCKTIME;
2234 3011
2235 if (timercnt) 3012 if (timercnt)
2236 { 3013 {
2237 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3014 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2238 if (waittime > to) waittime = to; 3015 if (waittime > to) waittime = to;
2239 } 3016 }
2240 3017
2241#if EV_PERIODIC_ENABLE 3018#if EV_PERIODIC_ENABLE
2242 if (periodiccnt) 3019 if (periodiccnt)
2243 { 3020 {
2244 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3021 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2245 if (waittime > to) waittime = to; 3022 if (waittime > to) waittime = to;
2246 } 3023 }
2247#endif 3024#endif
2248 3025
2249 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3026 /* don't let timeouts decrease the waittime below timeout_blocktime */
2250 if (expect_false (waittime < timeout_blocktime)) 3027 if (expect_false (waittime < timeout_blocktime))
2251 waittime = timeout_blocktime; 3028 waittime = timeout_blocktime;
3029
3030 /* at this point, we NEED to wait, so we have to ensure */
3031 /* to pass a minimum nonzero value to the backend */
3032 if (expect_false (waittime < backend_mintime))
3033 waittime = backend_mintime;
2252 3034
2253 /* extra check because io_blocktime is commonly 0 */ 3035 /* extra check because io_blocktime is commonly 0 */
2254 if (expect_false (io_blocktime)) 3036 if (expect_false (io_blocktime))
2255 { 3037 {
2256 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3038 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2257 3039
2258 if (sleeptime > waittime - backend_fudge) 3040 if (sleeptime > waittime - backend_mintime)
2259 sleeptime = waittime - backend_fudge; 3041 sleeptime = waittime - backend_mintime;
2260 3042
2261 if (expect_true (sleeptime > 0.)) 3043 if (expect_true (sleeptime > 0.))
2262 { 3044 {
2263 ev_sleep (sleeptime); 3045 ev_sleep (sleeptime);
2264 waittime -= sleeptime; 3046 waittime -= sleeptime;
2265 } 3047 }
2266 } 3048 }
2267 } 3049 }
2268 3050
2269#if EV_MINIMAL < 2 3051#if EV_FEATURE_API
2270 ++loop_count; 3052 ++loop_count;
2271#endif 3053#endif
2272 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3054 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2273 backend_poll (EV_A_ waittime); 3055 backend_poll (EV_A_ waittime);
2274 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3056 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3057
3058 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3059
3060 if (pipe_write_skipped)
3061 {
3062 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3063 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3064 }
3065
2275 3066
2276 /* update ev_rt_now, do magic */ 3067 /* update ev_rt_now, do magic */
2277 time_update (EV_A_ waittime + sleeptime); 3068 time_update (EV_A_ waittime + sleeptime);
2278 } 3069 }
2279 3070
… …
2286#if EV_IDLE_ENABLE 3077#if EV_IDLE_ENABLE
2287 /* queue idle watchers unless other events are pending */ 3078 /* queue idle watchers unless other events are pending */
2288 idle_reify (EV_A); 3079 idle_reify (EV_A);
2289#endif 3080#endif
2290 3081
3082#if EV_CHECK_ENABLE
2291 /* queue check watchers, to be executed first */ 3083 /* queue check watchers, to be executed first */
2292 if (expect_false (checkcnt)) 3084 if (expect_false (checkcnt))
2293 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3085 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3086#endif
2294 3087
2295 EV_INVOKE_PENDING; 3088 EV_INVOKE_PENDING;
2296 } 3089 }
2297 while (expect_true ( 3090 while (expect_true (
2298 activecnt 3091 activecnt
2299 && !loop_done 3092 && !loop_done
2300 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3093 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2301 )); 3094 ));
2302 3095
2303 if (loop_done == EVUNLOOP_ONE) 3096 if (loop_done == EVBREAK_ONE)
2304 loop_done = EVUNLOOP_CANCEL; 3097 loop_done = EVBREAK_CANCEL;
2305 3098
2306#if EV_MINIMAL < 2 3099#if EV_FEATURE_API
2307 --loop_depth; 3100 --loop_depth;
2308#endif 3101#endif
2309} 3102}
2310 3103
2311void 3104void
2312ev_unloop (EV_P_ int how) 3105ev_break (EV_P_ int how)
2313{ 3106{
2314 loop_done = how; 3107 loop_done = how;
2315} 3108}
2316 3109
2317void 3110void
… …
2364inline_size void 3157inline_size void
2365wlist_del (WL *head, WL elem) 3158wlist_del (WL *head, WL elem)
2366{ 3159{
2367 while (*head) 3160 while (*head)
2368 { 3161 {
2369 if (*head == elem) 3162 if (expect_true (*head == elem))
2370 { 3163 {
2371 *head = elem->next; 3164 *head = elem->next;
2372 return; 3165 break;
2373 } 3166 }
2374 3167
2375 head = &(*head)->next; 3168 head = &(*head)->next;
2376 } 3169 }
2377} 3170}
… …
2437 3230
2438 if (expect_false (ev_is_active (w))) 3231 if (expect_false (ev_is_active (w)))
2439 return; 3232 return;
2440 3233
2441 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3234 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)))); 3235 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2443 3236
2444 EV_FREQUENT_CHECK; 3237 EV_FREQUENT_CHECK;
2445 3238
2446 ev_start (EV_A_ (W)w, 1); 3239 ev_start (EV_A_ (W)w, 1);
2447 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3240 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2465 EV_FREQUENT_CHECK; 3258 EV_FREQUENT_CHECK;
2466 3259
2467 wlist_del (&anfds[w->fd].head, (WL)w); 3260 wlist_del (&anfds[w->fd].head, (WL)w);
2468 ev_stop (EV_A_ (W)w); 3261 ev_stop (EV_A_ (W)w);
2469 3262
2470 fd_change (EV_A_ w->fd, 1); 3263 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2471 3264
2472 EV_FREQUENT_CHECK; 3265 EV_FREQUENT_CHECK;
2473} 3266}
2474 3267
2475void noinline 3268void noinline
… …
2517 timers [active] = timers [timercnt + HEAP0]; 3310 timers [active] = timers [timercnt + HEAP0];
2518 adjustheap (timers, timercnt, active); 3311 adjustheap (timers, timercnt, active);
2519 } 3312 }
2520 } 3313 }
2521 3314
2522 EV_FREQUENT_CHECK;
2523
2524 ev_at (w) -= mn_now; 3315 ev_at (w) -= mn_now;
2525 3316
2526 ev_stop (EV_A_ (W)w); 3317 ev_stop (EV_A_ (W)w);
3318
3319 EV_FREQUENT_CHECK;
2527} 3320}
2528 3321
2529void noinline 3322void noinline
2530ev_timer_again (EV_P_ ev_timer *w) 3323ev_timer_again (EV_P_ ev_timer *w)
2531{ 3324{
2532 EV_FREQUENT_CHECK; 3325 EV_FREQUENT_CHECK;
3326
3327 clear_pending (EV_A_ (W)w);
2533 3328
2534 if (ev_is_active (w)) 3329 if (ev_is_active (w))
2535 { 3330 {
2536 if (w->repeat) 3331 if (w->repeat)
2537 { 3332 {
… …
2567 if (w->reschedule_cb) 3362 if (w->reschedule_cb)
2568 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3363 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2569 else if (w->interval) 3364 else if (w->interval)
2570 { 3365 {
2571 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3366 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 */ 3367 periodic_recalc (EV_A_ w);
2573 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2574 } 3368 }
2575 else 3369 else
2576 ev_at (w) = w->offset; 3370 ev_at (w) = w->offset;
2577 3371
2578 EV_FREQUENT_CHECK; 3372 EV_FREQUENT_CHECK;
… …
2610 periodics [active] = periodics [periodiccnt + HEAP0]; 3404 periodics [active] = periodics [periodiccnt + HEAP0];
2611 adjustheap (periodics, periodiccnt, active); 3405 adjustheap (periodics, periodiccnt, active);
2612 } 3406 }
2613 } 3407 }
2614 3408
2615 EV_FREQUENT_CHECK;
2616
2617 ev_stop (EV_A_ (W)w); 3409 ev_stop (EV_A_ (W)w);
3410
3411 EV_FREQUENT_CHECK;
2618} 3412}
2619 3413
2620void noinline 3414void noinline
2621ev_periodic_again (EV_P_ ev_periodic *w) 3415ev_periodic_again (EV_P_ ev_periodic *w)
2622{ 3416{
… …
2628 3422
2629#ifndef SA_RESTART 3423#ifndef SA_RESTART
2630# define SA_RESTART 0 3424# define SA_RESTART 0
2631#endif 3425#endif
2632 3426
3427#if EV_SIGNAL_ENABLE
3428
2633void noinline 3429void noinline
2634ev_signal_start (EV_P_ ev_signal *w) 3430ev_signal_start (EV_P_ ev_signal *w)
2635{ 3431{
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))) 3432 if (expect_false (ev_is_active (w)))
2640 return; 3433 return;
2641 3434
2642 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3435 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3436
3437#if EV_MULTIPLICITY
3438 assert (("libev: a signal must not be attached to two different loops",
3439 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3440
3441 signals [w->signum - 1].loop = EV_A;
3442#endif
2643 3443
2644 EV_FREQUENT_CHECK; 3444 EV_FREQUENT_CHECK;
2645 3445
2646#if EV_USE_SIGNALFD 3446#if EV_USE_SIGNALFD
2647 if (sigfd == -2) 3447 if (sigfd == -2)
… …
2669 sigaddset (&sigfd_set, w->signum); 3469 sigaddset (&sigfd_set, w->signum);
2670 sigprocmask (SIG_BLOCK, &sigfd_set, 0); 3470 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671 3471
2672 signalfd (sigfd, &sigfd_set, 0); 3472 signalfd (sigfd, &sigfd_set, 0);
2673 } 3473 }
2674 else
2675#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 EV_USE_SIGNALFD
2689 if (sigfd < 0)/*TODO*/
2690# endif 3474#endif
2691 sigdelset (&prev, w->signum);
2692 sigprocmask (SIG_SETMASK, &prev, 0);
2693#endif
2694 }
2695 3475
2696 ev_start (EV_A_ (W)w, 1); 3476 ev_start (EV_A_ (W)w, 1);
2697 wlist_add (&signals [w->signum - 1].head, (WL)w); 3477 wlist_add (&signals [w->signum - 1].head, (WL)w);
2698 3478
2699 if (!((WL)w)->next) 3479 if (!((WL)w)->next)
2700 {
2701#if _WIN32
2702 signal (w->signum, ev_sighandler);
2703#else
2704# if EV_USE_SIGNALFD 3480# if EV_USE_SIGNALFD
2705 if (sigfd < 0) /*TODO*/ 3481 if (sigfd < 0) /*TODO*/
2706# endif 3482# endif
2707 { 3483 {
3484# ifdef _WIN32
3485 evpipe_init (EV_A);
3486
3487 signal (w->signum, ev_sighandler);
3488# else
2708 struct sigaction sa = { }; 3489 struct sigaction sa;
3490
3491 evpipe_init (EV_A);
3492
2709 sa.sa_handler = ev_sighandler; 3493 sa.sa_handler = ev_sighandler;
2710 sigfillset (&sa.sa_mask); 3494 sigfillset (&sa.sa_mask);
2711 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3495 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2712 sigaction (w->signum, &sa, 0); 3496 sigaction (w->signum, &sa, 0);
3497
3498 if (origflags & EVFLAG_NOSIGMASK)
3499 {
3500 sigemptyset (&sa.sa_mask);
3501 sigaddset (&sa.sa_mask, w->signum);
3502 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2713 } 3503 }
2714#endif 3504#endif
2715 } 3505 }
2716 3506
2717 EV_FREQUENT_CHECK; 3507 EV_FREQUENT_CHECK;
2718} 3508}
2719 3509
2720void noinline 3510void noinline
… …
2728 3518
2729 wlist_del (&signals [w->signum - 1].head, (WL)w); 3519 wlist_del (&signals [w->signum - 1].head, (WL)w);
2730 ev_stop (EV_A_ (W)w); 3520 ev_stop (EV_A_ (W)w);
2731 3521
2732 if (!signals [w->signum - 1].head) 3522 if (!signals [w->signum - 1].head)
3523 {
3524#if EV_MULTIPLICITY
3525 signals [w->signum - 1].loop = 0; /* unattach from signal */
3526#endif
2733#if EV_USE_SIGNALFD 3527#if EV_USE_SIGNALFD
2734 if (sigfd >= 0) 3528 if (sigfd >= 0)
2735 { 3529 {
2736 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3530 sigset_t ss;
3531
3532 sigemptyset (&ss);
3533 sigaddset (&ss, w->signum);
2737 sigdelset (&sigfd_set, w->signum); 3534 sigdelset (&sigfd_set, w->signum);
3535
2738 signalfd (sigfd, &sigfd_set, 0); 3536 signalfd (sigfd, &sigfd_set, 0);
2739 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3537 sigprocmask (SIG_UNBLOCK, &ss, 0);
2740 /*TODO: maybe unblock signal? */
2741 } 3538 }
2742 else 3539 else
2743#endif 3540#endif
2744 signal (w->signum, SIG_DFL); 3541 signal (w->signum, SIG_DFL);
3542 }
2745 3543
2746 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
2747} 3545}
3546
3547#endif
3548
3549#if EV_CHILD_ENABLE
2748 3550
2749void 3551void
2750ev_child_start (EV_P_ ev_child *w) 3552ev_child_start (EV_P_ ev_child *w)
2751{ 3553{
2752#if EV_MULTIPLICITY 3554#if EV_MULTIPLICITY
… …
2756 return; 3558 return;
2757 3559
2758 EV_FREQUENT_CHECK; 3560 EV_FREQUENT_CHECK;
2759 3561
2760 ev_start (EV_A_ (W)w, 1); 3562 ev_start (EV_A_ (W)w, 1);
2761 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3563 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2762 3564
2763 EV_FREQUENT_CHECK; 3565 EV_FREQUENT_CHECK;
2764} 3566}
2765 3567
2766void 3568void
… …
2770 if (expect_false (!ev_is_active (w))) 3572 if (expect_false (!ev_is_active (w)))
2771 return; 3573 return;
2772 3574
2773 EV_FREQUENT_CHECK; 3575 EV_FREQUENT_CHECK;
2774 3576
2775 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3577 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2776 ev_stop (EV_A_ (W)w); 3578 ev_stop (EV_A_ (W)w);
2777 3579
2778 EV_FREQUENT_CHECK; 3580 EV_FREQUENT_CHECK;
2779} 3581}
3582
3583#endif
2780 3584
2781#if EV_STAT_ENABLE 3585#if EV_STAT_ENABLE
2782 3586
2783# ifdef _WIN32 3587# ifdef _WIN32
2784# undef lstat 3588# undef lstat
… …
2790#define MIN_STAT_INTERVAL 0.1074891 3594#define MIN_STAT_INTERVAL 0.1074891
2791 3595
2792static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3596static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2793 3597
2794#if EV_USE_INOTIFY 3598#if EV_USE_INOTIFY
2795# define EV_INOTIFY_BUFSIZE 8192 3599
3600/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3601# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2796 3602
2797static void noinline 3603static void noinline
2798infy_add (EV_P_ ev_stat *w) 3604infy_add (EV_P_ ev_stat *w)
2799{ 3605{
2800 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); 3606 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);
2801 3607
2802 if (w->wd < 0) 3608 if (w->wd >= 0)
3609 {
3610 struct statfs sfs;
3611
3612 /* now local changes will be tracked by inotify, but remote changes won't */
3613 /* unless the filesystem is known to be local, we therefore still poll */
3614 /* also do poll on <2.6.25, but with normal frequency */
3615
3616 if (!fs_2625)
3617 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3618 else if (!statfs (w->path, &sfs)
3619 && (sfs.f_type == 0x1373 /* devfs */
3620 || sfs.f_type == 0xEF53 /* ext2/3 */
3621 || sfs.f_type == 0x3153464a /* jfs */
3622 || sfs.f_type == 0x52654973 /* reiser3 */
3623 || sfs.f_type == 0x01021994 /* tempfs */
3624 || sfs.f_type == 0x58465342 /* xfs */))
3625 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3626 else
3627 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2803 { 3628 }
3629 else
3630 {
3631 /* can't use inotify, continue to stat */
2804 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3632 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2805 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2806 3633
2807 /* monitor some parent directory for speedup hints */ 3634 /* if path is not there, monitor some parent directory for speedup hints */
2808 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3635 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2809 /* but an efficiency issue only */ 3636 /* but an efficiency issue only */
2810 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3637 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2811 { 3638 {
2812 char path [4096]; 3639 char path [4096];
… …
2822 if (!pend || pend == path) 3649 if (!pend || pend == path)
2823 break; 3650 break;
2824 3651
2825 *pend = 0; 3652 *pend = 0;
2826 w->wd = inotify_add_watch (fs_fd, path, mask); 3653 w->wd = inotify_add_watch (fs_fd, path, mask);
2827 } 3654 }
2828 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3655 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2829 } 3656 }
2830 } 3657 }
2831 3658
2832 if (w->wd >= 0) 3659 if (w->wd >= 0)
2833 {
2834 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3660 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2835 3661
2836 /* now local changes will be tracked by inotify, but remote changes won't */ 3662 /* now re-arm timer, if required */
2837 /* unless the filesystem it known to be local, we therefore still poll */ 3663 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2838 /* also do poll on <2.6.25, but with normal frequency */
2839 struct statfs sfs;
2840
2841 if (fs_2625 && !statfs (w->path, &sfs))
2842 if (sfs.f_type == 0x1373 /* devfs */
2843 || sfs.f_type == 0xEF53 /* ext2/3 */
2844 || sfs.f_type == 0x3153464a /* jfs */
2845 || sfs.f_type == 0x52654973 /* reiser3 */
2846 || sfs.f_type == 0x01021994 /* tempfs */
2847 || sfs.f_type == 0x58465342 /* xfs */)
2848 return;
2849
2850 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2851 ev_timer_again (EV_A_ &w->timer); 3664 ev_timer_again (EV_A_ &w->timer);
2852 } 3665 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2853} 3666}
2854 3667
2855static void noinline 3668static void noinline
2856infy_del (EV_P_ ev_stat *w) 3669infy_del (EV_P_ ev_stat *w)
2857{ 3670{
… …
2860 3673
2861 if (wd < 0) 3674 if (wd < 0)
2862 return; 3675 return;
2863 3676
2864 w->wd = -2; 3677 w->wd = -2;
2865 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3678 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2866 wlist_del (&fs_hash [slot].head, (WL)w); 3679 wlist_del (&fs_hash [slot].head, (WL)w);
2867 3680
2868 /* remove this watcher, if others are watching it, they will rearm */ 3681 /* remove this watcher, if others are watching it, they will rearm */
2869 inotify_rm_watch (fs_fd, wd); 3682 inotify_rm_watch (fs_fd, wd);
2870} 3683}
… …
2872static void noinline 3685static void noinline
2873infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2874{ 3687{
2875 if (slot < 0) 3688 if (slot < 0)
2876 /* overflow, need to check for all hash slots */ 3689 /* overflow, need to check for all hash slots */
2877 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2878 infy_wd (EV_A_ slot, wd, ev); 3691 infy_wd (EV_A_ slot, wd, ev);
2879 else 3692 else
2880 { 3693 {
2881 WL w_; 3694 WL w_;
2882 3695
2883 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3696 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2884 { 3697 {
2885 ev_stat *w = (ev_stat *)w_; 3698 ev_stat *w = (ev_stat *)w_;
2886 w_ = w_->next; /* lets us remove this watcher and all before it */ 3699 w_ = w_->next; /* lets us remove this watcher and all before it */
2887 3700
2888 if (w->wd == wd || wd == -1) 3701 if (w->wd == wd || wd == -1)
2889 { 3702 {
2890 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3703 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2891 { 3704 {
2892 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3705 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2893 w->wd = -1; 3706 w->wd = -1;
2894 infy_add (EV_A_ w); /* re-add, no matter what */ 3707 infy_add (EV_A_ w); /* re-add, no matter what */
2895 } 3708 }
2896 3709
2897 stat_timer_cb (EV_A_ &w->timer, 0); 3710 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2902 3715
2903static void 3716static void
2904infy_cb (EV_P_ ev_io *w, int revents) 3717infy_cb (EV_P_ ev_io *w, int revents)
2905{ 3718{
2906 char buf [EV_INOTIFY_BUFSIZE]; 3719 char buf [EV_INOTIFY_BUFSIZE];
2907 struct inotify_event *ev = (struct inotify_event *)buf;
2908 int ofs; 3720 int ofs;
2909 int len = read (fs_fd, buf, sizeof (buf)); 3721 int len = read (fs_fd, buf, sizeof (buf));
2910 3722
2911 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3723 for (ofs = 0; ofs < len; )
3724 {
3725 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2912 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3726 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3727 ofs += sizeof (struct inotify_event) + ev->len;
3728 }
2913} 3729}
2914 3730
2915inline_size void 3731inline_size void ecb_cold
2916check_2625 (EV_P) 3732ev_check_2625 (EV_P)
2917{ 3733{
2918 /* kernels < 2.6.25 are borked 3734 /* kernels < 2.6.25 are borked
2919 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3735 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2920 */ 3736 */
2921 struct utsname buf; 3737 if (ev_linux_version () < 0x020619)
2922 int major, minor, micro;
2923
2924 if (uname (&buf))
2925 return; 3738 return;
2926 3739
2927 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2928 return;
2929
2930 if (major < 2
2931 || (major == 2 && minor < 6)
2932 || (major == 2 && minor == 6 && micro < 25))
2933 return;
2934
2935 fs_2625 = 1; 3740 fs_2625 = 1;
3741}
3742
3743inline_size int
3744infy_newfd (void)
3745{
3746#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3747 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3748 if (fd >= 0)
3749 return fd;
3750#endif
3751 return inotify_init ();
2936} 3752}
2937 3753
2938inline_size void 3754inline_size void
2939infy_init (EV_P) 3755infy_init (EV_P)
2940{ 3756{
2941 if (fs_fd != -2) 3757 if (fs_fd != -2)
2942 return; 3758 return;
2943 3759
2944 fs_fd = -1; 3760 fs_fd = -1;
2945 3761
2946 check_2625 (EV_A); 3762 ev_check_2625 (EV_A);
2947 3763
2948 fs_fd = inotify_init (); 3764 fs_fd = infy_newfd ();
2949 3765
2950 if (fs_fd >= 0) 3766 if (fs_fd >= 0)
2951 { 3767 {
3768 fd_intern (fs_fd);
2952 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3769 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2953 ev_set_priority (&fs_w, EV_MAXPRI); 3770 ev_set_priority (&fs_w, EV_MAXPRI);
2954 ev_io_start (EV_A_ &fs_w); 3771 ev_io_start (EV_A_ &fs_w);
3772 ev_unref (EV_A);
2955 } 3773 }
2956} 3774}
2957 3775
2958inline_size void 3776inline_size void
2959infy_fork (EV_P) 3777infy_fork (EV_P)
… …
2961 int slot; 3779 int slot;
2962 3780
2963 if (fs_fd < 0) 3781 if (fs_fd < 0)
2964 return; 3782 return;
2965 3783
3784 ev_ref (EV_A);
3785 ev_io_stop (EV_A_ &fs_w);
2966 close (fs_fd); 3786 close (fs_fd);
2967 fs_fd = inotify_init (); 3787 fs_fd = infy_newfd ();
2968 3788
3789 if (fs_fd >= 0)
3790 {
3791 fd_intern (fs_fd);
3792 ev_io_set (&fs_w, fs_fd, EV_READ);
3793 ev_io_start (EV_A_ &fs_w);
3794 ev_unref (EV_A);
3795 }
3796
2969 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3797 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2970 { 3798 {
2971 WL w_ = fs_hash [slot].head; 3799 WL w_ = fs_hash [slot].head;
2972 fs_hash [slot].head = 0; 3800 fs_hash [slot].head = 0;
2973 3801
2974 while (w_) 3802 while (w_)
… …
2979 w->wd = -1; 3807 w->wd = -1;
2980 3808
2981 if (fs_fd >= 0) 3809 if (fs_fd >= 0)
2982 infy_add (EV_A_ w); /* re-add, no matter what */ 3810 infy_add (EV_A_ w); /* re-add, no matter what */
2983 else 3811 else
3812 {
3813 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3814 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2984 ev_timer_again (EV_A_ &w->timer); 3815 ev_timer_again (EV_A_ &w->timer);
3816 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3817 }
2985 } 3818 }
2986 } 3819 }
2987} 3820}
2988 3821
2989#endif 3822#endif
… …
3006static void noinline 3839static void noinline
3007stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3840stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3008{ 3841{
3009 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3842 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3010 3843
3011 /* we copy this here each the time so that */ 3844 ev_statdata prev = w->attr;
3012 /* prev has the old value when the callback gets invoked */
3013 w->prev = w->attr;
3014 ev_stat_stat (EV_A_ w); 3845 ev_stat_stat (EV_A_ w);
3015 3846
3016 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3847 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3017 if ( 3848 if (
3018 w->prev.st_dev != w->attr.st_dev 3849 prev.st_dev != w->attr.st_dev
3019 || w->prev.st_ino != w->attr.st_ino 3850 || prev.st_ino != w->attr.st_ino
3020 || w->prev.st_mode != w->attr.st_mode 3851 || prev.st_mode != w->attr.st_mode
3021 || w->prev.st_nlink != w->attr.st_nlink 3852 || prev.st_nlink != w->attr.st_nlink
3022 || w->prev.st_uid != w->attr.st_uid 3853 || prev.st_uid != w->attr.st_uid
3023 || w->prev.st_gid != w->attr.st_gid 3854 || prev.st_gid != w->attr.st_gid
3024 || w->prev.st_rdev != w->attr.st_rdev 3855 || prev.st_rdev != w->attr.st_rdev
3025 || w->prev.st_size != w->attr.st_size 3856 || prev.st_size != w->attr.st_size
3026 || w->prev.st_atime != w->attr.st_atime 3857 || prev.st_atime != w->attr.st_atime
3027 || w->prev.st_mtime != w->attr.st_mtime 3858 || prev.st_mtime != w->attr.st_mtime
3028 || w->prev.st_ctime != w->attr.st_ctime 3859 || prev.st_ctime != w->attr.st_ctime
3029 ) { 3860 ) {
3861 /* we only update w->prev on actual differences */
3862 /* in case we test more often than invoke the callback, */
3863 /* to ensure that prev is always different to attr */
3864 w->prev = prev;
3865
3030 #if EV_USE_INOTIFY 3866 #if EV_USE_INOTIFY
3031 if (fs_fd >= 0) 3867 if (fs_fd >= 0)
3032 { 3868 {
3033 infy_del (EV_A_ w); 3869 infy_del (EV_A_ w);
3034 infy_add (EV_A_ w); 3870 infy_add (EV_A_ w);
… …
3059 3895
3060 if (fs_fd >= 0) 3896 if (fs_fd >= 0)
3061 infy_add (EV_A_ w); 3897 infy_add (EV_A_ w);
3062 else 3898 else
3063#endif 3899#endif
3900 {
3064 ev_timer_again (EV_A_ &w->timer); 3901 ev_timer_again (EV_A_ &w->timer);
3902 ev_unref (EV_A);
3903 }
3065 3904
3066 ev_start (EV_A_ (W)w, 1); 3905 ev_start (EV_A_ (W)w, 1);
3067 3906
3068 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
3069} 3908}
… …
3078 EV_FREQUENT_CHECK; 3917 EV_FREQUENT_CHECK;
3079 3918
3080#if EV_USE_INOTIFY 3919#if EV_USE_INOTIFY
3081 infy_del (EV_A_ w); 3920 infy_del (EV_A_ w);
3082#endif 3921#endif
3922
3923 if (ev_is_active (&w->timer))
3924 {
3925 ev_ref (EV_A);
3083 ev_timer_stop (EV_A_ &w->timer); 3926 ev_timer_stop (EV_A_ &w->timer);
3927 }
3084 3928
3085 ev_stop (EV_A_ (W)w); 3929 ev_stop (EV_A_ (W)w);
3086 3930
3087 EV_FREQUENT_CHECK; 3931 EV_FREQUENT_CHECK;
3088} 3932}
… …
3133 3977
3134 EV_FREQUENT_CHECK; 3978 EV_FREQUENT_CHECK;
3135} 3979}
3136#endif 3980#endif
3137 3981
3982#if EV_PREPARE_ENABLE
3138void 3983void
3139ev_prepare_start (EV_P_ ev_prepare *w) 3984ev_prepare_start (EV_P_ ev_prepare *w)
3140{ 3985{
3141 if (expect_false (ev_is_active (w))) 3986 if (expect_false (ev_is_active (w)))
3142 return; 3987 return;
… …
3168 4013
3169 ev_stop (EV_A_ (W)w); 4014 ev_stop (EV_A_ (W)w);
3170 4015
3171 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
3172} 4017}
4018#endif
3173 4019
4020#if EV_CHECK_ENABLE
3174void 4021void
3175ev_check_start (EV_P_ ev_check *w) 4022ev_check_start (EV_P_ ev_check *w)
3176{ 4023{
3177 if (expect_false (ev_is_active (w))) 4024 if (expect_false (ev_is_active (w)))
3178 return; 4025 return;
… …
3204 4051
3205 ev_stop (EV_A_ (W)w); 4052 ev_stop (EV_A_ (W)w);
3206 4053
3207 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
3208} 4055}
4056#endif
3209 4057
3210#if EV_EMBED_ENABLE 4058#if EV_EMBED_ENABLE
3211void noinline 4059void noinline
3212ev_embed_sweep (EV_P_ ev_embed *w) 4060ev_embed_sweep (EV_P_ ev_embed *w)
3213{ 4061{
3214 ev_loop (w->other, EVLOOP_NONBLOCK); 4062 ev_run (w->other, EVRUN_NOWAIT);
3215} 4063}
3216 4064
3217static void 4065static void
3218embed_io_cb (EV_P_ ev_io *io, int revents) 4066embed_io_cb (EV_P_ ev_io *io, int revents)
3219{ 4067{
3220 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4068 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3221 4069
3222 if (ev_cb (w)) 4070 if (ev_cb (w))
3223 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4071 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3224 else 4072 else
3225 ev_loop (w->other, EVLOOP_NONBLOCK); 4073 ev_run (w->other, EVRUN_NOWAIT);
3226} 4074}
3227 4075
3228static void 4076static void
3229embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4077embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3230{ 4078{
3231 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4079 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3232 4080
3233 { 4081 {
3234 struct ev_loop *loop = w->other; 4082 EV_P = w->other;
3235 4083
3236 while (fdchangecnt) 4084 while (fdchangecnt)
3237 { 4085 {
3238 fd_reify (EV_A); 4086 fd_reify (EV_A);
3239 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4087 ev_run (EV_A_ EVRUN_NOWAIT);
3240 } 4088 }
3241 } 4089 }
3242} 4090}
3243 4091
3244static void 4092static void
… …
3247 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4095 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3248 4096
3249 ev_embed_stop (EV_A_ w); 4097 ev_embed_stop (EV_A_ w);
3250 4098
3251 { 4099 {
3252 struct ev_loop *loop = w->other; 4100 EV_P = w->other;
3253 4101
3254 ev_loop_fork (EV_A); 4102 ev_loop_fork (EV_A);
3255 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4103 ev_run (EV_A_ EVRUN_NOWAIT);
3256 } 4104 }
3257 4105
3258 ev_embed_start (EV_A_ w); 4106 ev_embed_start (EV_A_ w);
3259} 4107}
3260 4108
… …
3271{ 4119{
3272 if (expect_false (ev_is_active (w))) 4120 if (expect_false (ev_is_active (w)))
3273 return; 4121 return;
3274 4122
3275 { 4123 {
3276 struct ev_loop *loop = w->other; 4124 EV_P = w->other;
3277 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4125 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3278 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4126 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3279 } 4127 }
3280 4128
3281 EV_FREQUENT_CHECK; 4129 EV_FREQUENT_CHECK;
… …
3308 4156
3309 ev_io_stop (EV_A_ &w->io); 4157 ev_io_stop (EV_A_ &w->io);
3310 ev_prepare_stop (EV_A_ &w->prepare); 4158 ev_prepare_stop (EV_A_ &w->prepare);
3311 ev_fork_stop (EV_A_ &w->fork); 4159 ev_fork_stop (EV_A_ &w->fork);
3312 4160
4161 ev_stop (EV_A_ (W)w);
4162
3313 EV_FREQUENT_CHECK; 4163 EV_FREQUENT_CHECK;
3314} 4164}
3315#endif 4165#endif
3316 4166
3317#if EV_FORK_ENABLE 4167#if EV_FORK_ENABLE
… …
3350 4200
3351 EV_FREQUENT_CHECK; 4201 EV_FREQUENT_CHECK;
3352} 4202}
3353#endif 4203#endif
3354 4204
4205#if EV_CLEANUP_ENABLE
4206void
4207ev_cleanup_start (EV_P_ ev_cleanup *w)
4208{
4209 if (expect_false (ev_is_active (w)))
4210 return;
4211
4212 EV_FREQUENT_CHECK;
4213
4214 ev_start (EV_A_ (W)w, ++cleanupcnt);
4215 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4216 cleanups [cleanupcnt - 1] = w;
4217
4218 /* cleanup watchers should never keep a refcount on the loop */
4219 ev_unref (EV_A);
4220 EV_FREQUENT_CHECK;
4221}
4222
4223void
4224ev_cleanup_stop (EV_P_ ev_cleanup *w)
4225{
4226 clear_pending (EV_A_ (W)w);
4227 if (expect_false (!ev_is_active (w)))
4228 return;
4229
4230 EV_FREQUENT_CHECK;
4231 ev_ref (EV_A);
4232
4233 {
4234 int active = ev_active (w);
4235
4236 cleanups [active - 1] = cleanups [--cleanupcnt];
4237 ev_active (cleanups [active - 1]) = active;
4238 }
4239
4240 ev_stop (EV_A_ (W)w);
4241
4242 EV_FREQUENT_CHECK;
4243}
4244#endif
4245
3355#if EV_ASYNC_ENABLE 4246#if EV_ASYNC_ENABLE
3356void 4247void
3357ev_async_start (EV_P_ ev_async *w) 4248ev_async_start (EV_P_ ev_async *w)
3358{ 4249{
3359 if (expect_false (ev_is_active (w))) 4250 if (expect_false (ev_is_active (w)))
3360 return; 4251 return;
3361 4252
4253 w->sent = 0;
4254
3362 evpipe_init (EV_A); 4255 evpipe_init (EV_A);
3363 4256
3364 EV_FREQUENT_CHECK; 4257 EV_FREQUENT_CHECK;
3365 4258
3366 ev_start (EV_A_ (W)w, ++asynccnt); 4259 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3393 4286
3394void 4287void
3395ev_async_send (EV_P_ ev_async *w) 4288ev_async_send (EV_P_ ev_async *w)
3396{ 4289{
3397 w->sent = 1; 4290 w->sent = 1;
3398 evpipe_write (EV_A_ &gotasync); 4291 evpipe_write (EV_A_ &async_pending);
3399} 4292}
3400#endif 4293#endif
3401 4294
3402/*****************************************************************************/ 4295/*****************************************************************************/
3403 4296
… …
3443{ 4336{
3444 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4337 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3445 4338
3446 if (expect_false (!once)) 4339 if (expect_false (!once))
3447 { 4340 {
3448 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4341 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3449 return; 4342 return;
3450 } 4343 }
3451 4344
3452 once->cb = cb; 4345 once->cb = cb;
3453 once->arg = arg; 4346 once->arg = arg;
… …
3468} 4361}
3469 4362
3470/*****************************************************************************/ 4363/*****************************************************************************/
3471 4364
3472#if EV_WALK_ENABLE 4365#if EV_WALK_ENABLE
3473void 4366void ecb_cold
3474ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4367ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3475{ 4368{
3476 int i, j; 4369 int i, j;
3477 ev_watcher_list *wl, *wn; 4370 ev_watcher_list *wl, *wn;
3478 4371
… …
3522 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4415 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3523#endif 4416#endif
3524 4417
3525#if EV_IDLE_ENABLE 4418#if EV_IDLE_ENABLE
3526 if (types & EV_IDLE) 4419 if (types & EV_IDLE)
3527 for (j = NUMPRI; i--; ) 4420 for (j = NUMPRI; j--; )
3528 for (i = idlecnt [j]; i--; ) 4421 for (i = idlecnt [j]; i--; )
3529 cb (EV_A_ EV_IDLE, idles [j][i]); 4422 cb (EV_A_ EV_IDLE, idles [j][i]);
3530#endif 4423#endif
3531 4424
3532#if EV_FORK_ENABLE 4425#if EV_FORK_ENABLE
… …
3540 if (types & EV_ASYNC) 4433 if (types & EV_ASYNC)
3541 for (i = asynccnt; i--; ) 4434 for (i = asynccnt; i--; )
3542 cb (EV_A_ EV_ASYNC, asyncs [i]); 4435 cb (EV_A_ EV_ASYNC, asyncs [i]);
3543#endif 4436#endif
3544 4437
4438#if EV_PREPARE_ENABLE
3545 if (types & EV_PREPARE) 4439 if (types & EV_PREPARE)
3546 for (i = preparecnt; i--; ) 4440 for (i = preparecnt; i--; )
3547#if EV_EMBED_ENABLE 4441# if EV_EMBED_ENABLE
3548 if (ev_cb (prepares [i]) != embed_prepare_cb) 4442 if (ev_cb (prepares [i]) != embed_prepare_cb)
3549#endif 4443# endif
3550 cb (EV_A_ EV_PREPARE, prepares [i]); 4444 cb (EV_A_ EV_PREPARE, prepares [i]);
4445#endif
3551 4446
4447#if EV_CHECK_ENABLE
3552 if (types & EV_CHECK) 4448 if (types & EV_CHECK)
3553 for (i = checkcnt; i--; ) 4449 for (i = checkcnt; i--; )
3554 cb (EV_A_ EV_CHECK, checks [i]); 4450 cb (EV_A_ EV_CHECK, checks [i]);
4451#endif
3555 4452
4453#if EV_SIGNAL_ENABLE
3556 if (types & EV_SIGNAL) 4454 if (types & EV_SIGNAL)
3557 for (i = 0; i < signalmax; ++i) 4455 for (i = 0; i < EV_NSIG - 1; ++i)
3558 for (wl = signals [i].head; wl; ) 4456 for (wl = signals [i].head; wl; )
3559 { 4457 {
3560 wn = wl->next; 4458 wn = wl->next;
3561 cb (EV_A_ EV_SIGNAL, wl); 4459 cb (EV_A_ EV_SIGNAL, wl);
3562 wl = wn; 4460 wl = wn;
3563 } 4461 }
4462#endif
3564 4463
4464#if EV_CHILD_ENABLE
3565 if (types & EV_CHILD) 4465 if (types & EV_CHILD)
3566 for (i = EV_PID_HASHSIZE; i--; ) 4466 for (i = (EV_PID_HASHSIZE); i--; )
3567 for (wl = childs [i]; wl; ) 4467 for (wl = childs [i]; wl; )
3568 { 4468 {
3569 wn = wl->next; 4469 wn = wl->next;
3570 cb (EV_A_ EV_CHILD, wl); 4470 cb (EV_A_ EV_CHILD, wl);
3571 wl = wn; 4471 wl = wn;
3572 } 4472 }
4473#endif
3573/* EV_STAT 0x00001000 /* stat data changed */ 4474/* EV_STAT 0x00001000 /* stat data changed */
3574/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4475/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3575} 4476}
3576#endif 4477#endif
3577 4478
3578#if EV_MULTIPLICITY 4479#if EV_MULTIPLICITY
3579 #include "ev_wrap.h" 4480 #include "ev_wrap.h"
3580#endif 4481#endif
3581 4482
3582#ifdef __cplusplus
3583}
3584#endif
3585

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