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Comparing libev/ev.c (file contents):
Revision 1.290 by root, Mon Jun 29 04:41:34 2009 UTC vs.
Revision 1.482 by root, Sat Jul 28 04:15:15 2018 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) 2007,2008,2009,2010,2011,2012,2013 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"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# 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
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
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
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# 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
166#endif 197#endif
167 198
168#ifndef _WIN32 199#ifndef _WIN32
169# include <sys/time.h> 200# include <sys/time.h>
170# include <sys/wait.h> 201# include <sys/wait.h>
171# include <unistd.h> 202# include <unistd.h>
172#else 203#else
173# include <io.h> 204# include <io.h>
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
175# include <windows.h> 207# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
178# endif 210# endif
211# undef EV_AVOID_STDIO
179#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
180 221
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
182 223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247#endif
248
249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
251#endif
252
183#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
185# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 256# else
187# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
188# endif 258# endif
189#endif 259#endif
190 260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
191#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 272# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 273# else
195# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
196# endif 275# endif
197#endif 276#endif
198 277
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 279# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 280#endif
202 281
203#ifndef EV_USE_NANOSLEEP 282#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 283# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 284# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 285# else
207# define EV_USE_NANOSLEEP 0 286# define EV_USE_NANOSLEEP 0
208# endif 287# endif
209#endif 288#endif
210 289
211#ifndef EV_USE_SELECT 290#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 291# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 292#endif
214 293
215#ifndef EV_USE_POLL 294#ifndef EV_USE_POLL
216# ifdef _WIN32 295# ifdef _WIN32
217# define EV_USE_POLL 0 296# define EV_USE_POLL 0
218# else 297# else
219# define EV_USE_POLL 1 298# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 299# endif
221#endif 300#endif
222 301
223#ifndef EV_USE_EPOLL 302#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 304# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 305# else
227# define EV_USE_EPOLL 0 306# define EV_USE_EPOLL 0
228# endif 307# endif
229#endif 308#endif
230 309
… …
236# define EV_USE_PORT 0 315# define EV_USE_PORT 0
237#endif 316#endif
238 317
239#ifndef EV_USE_INOTIFY 318#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 320# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 321# else
243# define EV_USE_INOTIFY 0 322# define EV_USE_INOTIFY 0
244# endif 323# endif
245#endif 324#endif
246 325
247#ifndef EV_PID_HASHSIZE 326#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 327# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 328#endif
254 329
255#ifndef EV_INOTIFY_HASHSIZE 330#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 331# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 332#endif
262 333
263#ifndef EV_USE_EVENTFD 334#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 335# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 336# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 337# else
267# define EV_USE_EVENTFD 0 338# define EV_USE_EVENTFD 0
339# endif
340#endif
341
342#ifndef EV_USE_SIGNALFD
343# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
344# define EV_USE_SIGNALFD EV_FEATURE_OS
345# else
346# define EV_USE_SIGNALFD 0
268# endif 347# endif
269#endif 348#endif
270 349
271#if 0 /* debugging */ 350#if 0 /* debugging */
272# define EV_VERIFY 3 351# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 352# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 353# define EV_HEAP_CACHE_AT 1
275#endif 354#endif
276 355
277#ifndef EV_VERIFY 356#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 357# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 358#endif
280 359
281#ifndef EV_USE_4HEAP 360#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 361# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 362#endif
284 363
285#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif
288
289/* this block fixes any misconfiguration where we know we run into trouble otherwise */
290
291#ifndef CLOCK_MONOTONIC
292# undef EV_USE_MONOTONIC
293# define EV_USE_MONOTONIC 0
294#endif
295
296#ifndef CLOCK_REALTIME
297# undef EV_USE_REALTIME
298# define EV_USE_REALTIME 0
299#endif
300
301#if !EV_STAT_ENABLE
302# undef EV_USE_INOTIFY
303# define EV_USE_INOTIFY 0
304#endif
305
306#if !EV_USE_NANOSLEEP
307# ifndef _WIN32
308# include <sys/select.h>
309# endif 366#endif
310#endif
311 367
312#if EV_USE_INOTIFY 368#ifdef __ANDROID__
313# include <sys/utsname.h> 369/* supposedly, android doesn't typedef fd_mask */
314# include <sys/statfs.h> 370# undef EV_USE_SELECT
315# include <sys/inotify.h>
316/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
317# ifndef IN_DONT_FOLLOW
318# undef EV_USE_INOTIFY
319# define EV_USE_INOTIFY 0 371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
320# endif 375#endif
321#endif
322 376
323#if EV_SELECT_IS_WINSOCKET 377/* aix's poll.h seems to cause lots of trouble */
324# include <winsock.h> 378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
325#endif 382#endif
326 383
327/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
328/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
329#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
330# include <syscall.h> 387# include <sys/syscall.h>
331# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
332# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
333# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
334# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
335# else 392# else
336# undef EV_USE_CLOCK_SYSCALL 393# undef EV_USE_CLOCK_SYSCALL
337# define EV_USE_CLOCK_SYSCALL 0 394# define EV_USE_CLOCK_SYSCALL 0
338# endif 395# endif
339#endif 396#endif
340 397
398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
399
400#ifndef CLOCK_MONOTONIC
401# undef EV_USE_MONOTONIC
402# define EV_USE_MONOTONIC 0
403#endif
404
405#ifndef CLOCK_REALTIME
406# undef EV_USE_REALTIME
407# define EV_USE_REALTIME 0
408#endif
409
410#if !EV_STAT_ENABLE
411# undef EV_USE_INOTIFY
412# define EV_USE_INOTIFY 0
413#endif
414
415#if !EV_USE_NANOSLEEP
416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
418# include <sys/select.h>
419# endif
420#endif
421
422#if EV_USE_INOTIFY
423# include <sys/statfs.h>
424# include <sys/inotify.h>
425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
426# ifndef IN_DONT_FOLLOW
427# undef EV_USE_INOTIFY
428# define EV_USE_INOTIFY 0
429# endif
430#endif
431
341#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 434# include <stdint.h>
344# ifdef __cplusplus 435# ifndef EFD_NONBLOCK
345extern "C" { 436# define EFD_NONBLOCK O_NONBLOCK
346# endif 437# endif
347int eventfd (unsigned int initval, int flags); 438# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 439# ifdef O_CLOEXEC
349} 440# define EFD_CLOEXEC O_CLOEXEC
441# else
442# define EFD_CLOEXEC 02000000
443# endif
350# endif 444# endif
445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
446#endif
447
448#if EV_USE_SIGNALFD
449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
450# include <stdint.h>
451# ifndef SFD_NONBLOCK
452# define SFD_NONBLOCK O_NONBLOCK
453# endif
454# ifndef SFD_CLOEXEC
455# ifdef O_CLOEXEC
456# define SFD_CLOEXEC O_CLOEXEC
457# else
458# define SFD_CLOEXEC 02000000
459# endif
460# endif
461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
462
463struct signalfd_siginfo
464{
465 uint32_t ssi_signo;
466 char pad[128 - sizeof (uint32_t)];
467};
351#endif 468#endif
352 469
353/**/ 470/**/
354 471
355#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 473# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 474#else
358# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
359#endif 476#endif
360 477
361/* 478/*
362 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 481 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 484
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 487
488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010005
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 546 #if __GNUC__
547 typedef signed long long int64_t;
548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
562#else
563 #include <inttypes.h>
564 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8
566 #else
567 #define ECB_PTRSIZE 4
568 #endif
569#endif
570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
580 #endif
581#endif
582
583/* many compilers define _GNUC_ to some versions but then only implement
584 * what their idiot authors think are the "more important" extensions,
585 * causing enormous grief in return for some better fake benchmark numbers.
586 * or so.
587 * we try to detect these and simply assume they are not gcc - if they have
588 * an issue with that they should have done it right in the first place.
589 */
590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
591 #define ECB_GCC_VERSION(major,minor) 0
592#else
593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
610#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
623
624#if ECB_CPP
625 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END }
628#else
629 #define ECB_EXTERN_C extern
630 #define ECB_EXTERN_C_BEG
631 #define ECB_EXTERN_C_END
632#endif
633
634/*****************************************************************************/
635
636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
638
639#if ECB_NO_THREADS
640 #define ECB_NO_SMP 1
641#endif
642
643#if ECB_NO_SMP
644 #define ECB_MEMORY_FENCE do { } while (0)
645#endif
646
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP
649 #include <builtins.h>
650#endif
651
652#if 1400 <= _MSC_VER
653 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
654#endif
655
656#ifndef ECB_MEMORY_FENCE
657 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
658 #if __i386 || __i386__
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
662 #elif ECB_GCC_AMD64
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
667 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
668 #elif defined __ARM_ARCH_2__ \
669 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
670 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
671 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
672 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
673 || defined __ARM_ARCH_5TEJ__
674 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
675 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
676 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
677 || defined __ARM_ARCH_6T2__
678 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
679 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
680 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
681 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
682 #elif __aarch64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
684 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
686 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
687 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
688 #elif defined __s390__ || defined __s390x__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
690 #elif defined __mips__
691 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
692 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
693 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
694 #elif defined __alpha__
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
696 #elif defined __hppa__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
698 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
699 #elif defined __ia64__
700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
701 #elif defined __m68k__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
703 #elif defined __m88k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
705 #elif defined __sh__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
707 #endif
708 #endif
709#endif
710
711#ifndef ECB_MEMORY_FENCE
712 #if ECB_GCC_VERSION(4,7)
713 /* see comment below (stdatomic.h) about the C11 memory model. */
714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
716 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
717
718 #elif ECB_CLANG_EXTENSION(c_atomic)
719 /* see comment below (stdatomic.h) about the C11 memory model. */
720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
722 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
723
724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
725 #define ECB_MEMORY_FENCE __sync_synchronize ()
726 #elif _MSC_VER >= 1500 /* VC++ 2008 */
727 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
728 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
729 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
730 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
731 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
732 #elif _MSC_VER >= 1400 /* VC++ 2005 */
733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
734 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
735 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
737 #elif defined _WIN32
738 #include <WinNT.h>
739 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
740 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
741 #include <mbarrier.h>
742 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
743 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
744 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
745 #elif __xlC__
746 #define ECB_MEMORY_FENCE __sync ()
747 #endif
748#endif
749
750#ifndef ECB_MEMORY_FENCE
751 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
752 /* we assume that these memory fences work on all variables/all memory accesses, */
753 /* not just C11 atomics and atomic accesses */
754 #include <stdatomic.h>
755 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
756 /* any fence other than seq_cst, which isn't very efficient for us. */
757 /* Why that is, we don't know - either the C11 memory model is quite useless */
758 /* for most usages, or gcc and clang have a bug */
759 /* I *currently* lean towards the latter, and inefficiently implement */
760 /* all three of ecb's fences as a seq_cst fence */
761 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
762 /* for all __atomic_thread_fence's except seq_cst */
763 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
764 #endif
765#endif
766
767#ifndef ECB_MEMORY_FENCE
768 #if !ECB_AVOID_PTHREADS
769 /*
770 * if you get undefined symbol references to pthread_mutex_lock,
771 * or failure to find pthread.h, then you should implement
772 * the ECB_MEMORY_FENCE operations for your cpu/compiler
773 * OR provide pthread.h and link against the posix thread library
774 * of your system.
775 */
776 #include <pthread.h>
777 #define ECB_NEEDS_PTHREADS 1
778 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
779
780 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
781 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
782 #endif
783#endif
784
785#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
786 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
787#endif
788
789#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
791#endif
792
793/*****************************************************************************/
794
795#if ECB_CPP
796 #define ecb_inline static inline
797#elif ECB_GCC_VERSION(2,5)
798 #define ecb_inline static __inline__
799#elif ECB_C99
800 #define ecb_inline static inline
801#else
802 #define ecb_inline static
803#endif
804
805#if ECB_GCC_VERSION(3,3)
806 #define ecb_restrict __restrict__
807#elif ECB_C99
808 #define ecb_restrict restrict
809#else
810 #define ecb_restrict
811#endif
812
813typedef int ecb_bool;
814
815#define ECB_CONCAT_(a, b) a ## b
816#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
817#define ECB_STRINGIFY_(a) # a
818#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
819#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
820
821#define ecb_function_ ecb_inline
822
823#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
824 #define ecb_attribute(attrlist) __attribute__ (attrlist)
825#else
826 #define ecb_attribute(attrlist)
827#endif
828
829#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
830 #define ecb_is_constant(expr) __builtin_constant_p (expr)
831#else
832 /* possible C11 impl for integral types
833 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
834 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
835
836 #define ecb_is_constant(expr) 0
837#endif
838
839#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
376# define expect(expr,value) __builtin_expect ((expr),(value)) 840 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
377# define noinline __attribute__ ((noinline))
378#else 841#else
379# define expect(expr,value) (expr) 842 #define ecb_expect(expr,value) (expr)
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif 843#endif
384#endif
385 844
845#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
846 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
847#else
848 #define ecb_prefetch(addr,rw,locality)
849#endif
850
851/* no emulation for ecb_decltype */
852#if ECB_CPP11
853 // older implementations might have problems with decltype(x)::type, work around it
854 template<class T> struct ecb_decltype_t { typedef T type; };
855 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
856#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
857 #define ecb_decltype(x) __typeof__ (x)
858#endif
859
860#if _MSC_VER >= 1300
861 #define ecb_deprecated __declspec (deprecated)
862#else
863 #define ecb_deprecated ecb_attribute ((__deprecated__))
864#endif
865
866#if _MSC_VER >= 1500
867 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
868#elif ECB_GCC_VERSION(4,5)
869 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
870#else
871 #define ecb_deprecated_message(msg) ecb_deprecated
872#endif
873
874#if _MSC_VER >= 1400
875 #define ecb_noinline __declspec (noinline)
876#else
877 #define ecb_noinline ecb_attribute ((__noinline__))
878#endif
879
880#define ecb_unused ecb_attribute ((__unused__))
881#define ecb_const ecb_attribute ((__const__))
882#define ecb_pure ecb_attribute ((__pure__))
883
884#if ECB_C11 || __IBMC_NORETURN
885 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
886 #define ecb_noreturn _Noreturn
887#elif ECB_CPP11
888 #define ecb_noreturn [[noreturn]]
889#elif _MSC_VER >= 1200
890 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
891 #define ecb_noreturn __declspec (noreturn)
892#else
893 #define ecb_noreturn ecb_attribute ((__noreturn__))
894#endif
895
896#if ECB_GCC_VERSION(4,3)
897 #define ecb_artificial ecb_attribute ((__artificial__))
898 #define ecb_hot ecb_attribute ((__hot__))
899 #define ecb_cold ecb_attribute ((__cold__))
900#else
901 #define ecb_artificial
902 #define ecb_hot
903 #define ecb_cold
904#endif
905
906/* put around conditional expressions if you are very sure that the */
907/* expression is mostly true or mostly false. note that these return */
908/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 909#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 910#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
911/* for compatibility to the rest of the world */
912#define ecb_likely(expr) ecb_expect_true (expr)
913#define ecb_unlikely(expr) ecb_expect_false (expr)
914
915/* count trailing zero bits and count # of one bits */
916#if ECB_GCC_VERSION(3,4) \
917 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
918 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
919 && ECB_CLANG_BUILTIN(__builtin_popcount))
920 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
921 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
922 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
923 #define ecb_ctz32(x) __builtin_ctz (x)
924 #define ecb_ctz64(x) __builtin_ctzll (x)
925 #define ecb_popcount32(x) __builtin_popcount (x)
926 /* no popcountll */
927#else
928 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
929 ecb_function_ ecb_const int
930 ecb_ctz32 (uint32_t x)
931 {
932#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
933 unsigned long r;
934 _BitScanForward (&r, x);
935 return (int)r;
936#else
937 int r = 0;
938
939 x &= ~x + 1; /* this isolates the lowest bit */
940
941#if ECB_branchless_on_i386
942 r += !!(x & 0xaaaaaaaa) << 0;
943 r += !!(x & 0xcccccccc) << 1;
944 r += !!(x & 0xf0f0f0f0) << 2;
945 r += !!(x & 0xff00ff00) << 3;
946 r += !!(x & 0xffff0000) << 4;
947#else
948 if (x & 0xaaaaaaaa) r += 1;
949 if (x & 0xcccccccc) r += 2;
950 if (x & 0xf0f0f0f0) r += 4;
951 if (x & 0xff00ff00) r += 8;
952 if (x & 0xffff0000) r += 16;
953#endif
954
955 return r;
956#endif
957 }
958
959 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
960 ecb_function_ ecb_const int
961 ecb_ctz64 (uint64_t x)
962 {
963#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
964 unsigned long r;
965 _BitScanForward64 (&r, x);
966 return (int)r;
967#else
968 int shift = x & 0xffffffff ? 0 : 32;
969 return ecb_ctz32 (x >> shift) + shift;
970#endif
971 }
972
973 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
974 ecb_function_ ecb_const int
975 ecb_popcount32 (uint32_t x)
976 {
977 x -= (x >> 1) & 0x55555555;
978 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
979 x = ((x >> 4) + x) & 0x0f0f0f0f;
980 x *= 0x01010101;
981
982 return x >> 24;
983 }
984
985 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
986 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
987 {
988#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
989 unsigned long r;
990 _BitScanReverse (&r, x);
991 return (int)r;
992#else
993 int r = 0;
994
995 if (x >> 16) { x >>= 16; r += 16; }
996 if (x >> 8) { x >>= 8; r += 8; }
997 if (x >> 4) { x >>= 4; r += 4; }
998 if (x >> 2) { x >>= 2; r += 2; }
999 if (x >> 1) { r += 1; }
1000
1001 return r;
1002#endif
1003 }
1004
1005 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1006 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1007 {
1008#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1009 unsigned long r;
1010 _BitScanReverse64 (&r, x);
1011 return (int)r;
1012#else
1013 int r = 0;
1014
1015 if (x >> 32) { x >>= 32; r += 32; }
1016
1017 return r + ecb_ld32 (x);
1018#endif
1019 }
1020#endif
1021
1022ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1023ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1024ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1026
1027ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1028ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1029{
1030 return ( (x * 0x0802U & 0x22110U)
1031 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1032}
1033
1034ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1035ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1036{
1037 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1038 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1039 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1040 x = ( x >> 8 ) | ( x << 8);
1041
1042 return x;
1043}
1044
1045ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1046ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1047{
1048 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1049 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1050 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1051 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1052 x = ( x >> 16 ) | ( x << 16);
1053
1054 return x;
1055}
1056
1057/* popcount64 is only available on 64 bit cpus as gcc builtin */
1058/* so for this version we are lazy */
1059ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1060ecb_function_ ecb_const int
1061ecb_popcount64 (uint64_t x)
1062{
1063 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1064}
1065
1066ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1067ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1068ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1069ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1070ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1071ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1072ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1073ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1074
1075ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1076ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1077ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1078ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1079ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1080ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1081ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1082ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1083
1084#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1085 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1086 #define ecb_bswap16(x) __builtin_bswap16 (x)
1087 #else
1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1089 #endif
1090 #define ecb_bswap32(x) __builtin_bswap32 (x)
1091 #define ecb_bswap64(x) __builtin_bswap64 (x)
1092#elif _MSC_VER
1093 #include <stdlib.h>
1094 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1095 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1096 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1097#else
1098 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1099 ecb_function_ ecb_const uint16_t
1100 ecb_bswap16 (uint16_t x)
1101 {
1102 return ecb_rotl16 (x, 8);
1103 }
1104
1105 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1106 ecb_function_ ecb_const uint32_t
1107 ecb_bswap32 (uint32_t x)
1108 {
1109 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1110 }
1111
1112 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1113 ecb_function_ ecb_const uint64_t
1114 ecb_bswap64 (uint64_t x)
1115 {
1116 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1117 }
1118#endif
1119
1120#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1121 #define ecb_unreachable() __builtin_unreachable ()
1122#else
1123 /* this seems to work fine, but gcc always emits a warning for it :/ */
1124 ecb_inline ecb_noreturn void ecb_unreachable (void);
1125 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1126#endif
1127
1128/* try to tell the compiler that some condition is definitely true */
1129#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1130
1131ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1132ecb_inline ecb_const uint32_t
1133ecb_byteorder_helper (void)
1134{
1135 /* the union code still generates code under pressure in gcc, */
1136 /* but less than using pointers, and always seems to */
1137 /* successfully return a constant. */
1138 /* the reason why we have this horrible preprocessor mess */
1139 /* is to avoid it in all cases, at least on common architectures */
1140 /* or when using a recent enough gcc version (>= 4.6) */
1141#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1142 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1143 #define ECB_LITTLE_ENDIAN 1
1144 return 0x44332211;
1145#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1146 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1147 #define ECB_BIG_ENDIAN 1
1148 return 0x11223344;
1149#else
1150 union
1151 {
1152 uint8_t c[4];
1153 uint32_t u;
1154 } u = { 0x11, 0x22, 0x33, 0x44 };
1155 return u.u;
1156#endif
1157}
1158
1159ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1160ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1161ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1162ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1163
1164#if ECB_GCC_VERSION(3,0) || ECB_C99
1165 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1166#else
1167 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1168#endif
1169
1170#if ECB_CPP
1171 template<typename T>
1172 static inline T ecb_div_rd (T val, T div)
1173 {
1174 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1175 }
1176 template<typename T>
1177 static inline T ecb_div_ru (T val, T div)
1178 {
1179 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1180 }
1181#else
1182 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1183 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1184#endif
1185
1186#if ecb_cplusplus_does_not_suck
1187 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1188 template<typename T, int N>
1189 static inline int ecb_array_length (const T (&arr)[N])
1190 {
1191 return N;
1192 }
1193#else
1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1195#endif
1196
1197ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1198ecb_function_ ecb_const uint32_t
1199ecb_binary16_to_binary32 (uint32_t x)
1200{
1201 unsigned int s = (x & 0x8000) << (31 - 15);
1202 int e = (x >> 10) & 0x001f;
1203 unsigned int m = x & 0x03ff;
1204
1205 if (ecb_expect_false (e == 31))
1206 /* infinity or NaN */
1207 e = 255 - (127 - 15);
1208 else if (ecb_expect_false (!e))
1209 {
1210 if (ecb_expect_true (!m))
1211 /* zero, handled by code below by forcing e to 0 */
1212 e = 0 - (127 - 15);
1213 else
1214 {
1215 /* subnormal, renormalise */
1216 unsigned int s = 10 - ecb_ld32 (m);
1217
1218 m = (m << s) & 0x3ff; /* mask implicit bit */
1219 e -= s - 1;
1220 }
1221 }
1222
1223 /* e and m now are normalised, or zero, (or inf or nan) */
1224 e += 127 - 15;
1225
1226 return s | (e << 23) | (m << (23 - 10));
1227}
1228
1229ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1230ecb_function_ ecb_const uint16_t
1231ecb_binary32_to_binary16 (uint32_t x)
1232{
1233 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1234 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1235 unsigned int m = x & 0x007fffff;
1236
1237 x &= 0x7fffffff;
1238
1239 /* if it's within range of binary16 normals, use fast path */
1240 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1241 {
1242 /* mantissa round-to-even */
1243 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1244
1245 /* handle overflow */
1246 if (ecb_expect_false (m >= 0x00800000))
1247 {
1248 m >>= 1;
1249 e += 1;
1250 }
1251
1252 return s | (e << 10) | (m >> (23 - 10));
1253 }
1254
1255 /* handle large numbers and infinity */
1256 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1257 return s | 0x7c00;
1258
1259 /* handle zero, subnormals and small numbers */
1260 if (ecb_expect_true (x < 0x38800000))
1261 {
1262 /* zero */
1263 if (ecb_expect_true (!x))
1264 return s;
1265
1266 /* handle subnormals */
1267
1268 /* too small, will be zero */
1269 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1270 return s;
1271
1272 m |= 0x00800000; /* make implicit bit explicit */
1273
1274 /* very tricky - we need to round to the nearest e (+10) bit value */
1275 {
1276 unsigned int bits = 14 - e;
1277 unsigned int half = (1 << (bits - 1)) - 1;
1278 unsigned int even = (m >> bits) & 1;
1279
1280 /* if this overflows, we will end up with a normalised number */
1281 m = (m + half + even) >> bits;
1282 }
1283
1284 return s | m;
1285 }
1286
1287 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1288 m >>= 13;
1289
1290 return s | 0x7c00 | m | !m;
1291}
1292
1293/*******************************************************************************/
1294/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1295
1296/* basically, everything uses "ieee pure-endian" floating point numbers */
1297/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1298#if 0 \
1299 || __i386 || __i386__ \
1300 || ECB_GCC_AMD64 \
1301 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1302 || defined __s390__ || defined __s390x__ \
1303 || defined __mips__ \
1304 || defined __alpha__ \
1305 || defined __hppa__ \
1306 || defined __ia64__ \
1307 || defined __m68k__ \
1308 || defined __m88k__ \
1309 || defined __sh__ \
1310 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1311 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1312 || defined __aarch64__
1313 #define ECB_STDFP 1
1314 #include <string.h> /* for memcpy */
1315#else
1316 #define ECB_STDFP 0
1317#endif
1318
1319#ifndef ECB_NO_LIBM
1320
1321 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1322
1323 /* only the oldest of old doesn't have this one. solaris. */
1324 #ifdef INFINITY
1325 #define ECB_INFINITY INFINITY
1326 #else
1327 #define ECB_INFINITY HUGE_VAL
1328 #endif
1329
1330 #ifdef NAN
1331 #define ECB_NAN NAN
1332 #else
1333 #define ECB_NAN ECB_INFINITY
1334 #endif
1335
1336 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1337 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1338 #define ecb_frexpf(x,e) frexpf ((x), (e))
1339 #else
1340 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1341 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1342 #endif
1343
1344 /* convert a float to ieee single/binary32 */
1345 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1346 ecb_function_ ecb_const uint32_t
1347 ecb_float_to_binary32 (float x)
1348 {
1349 uint32_t r;
1350
1351 #if ECB_STDFP
1352 memcpy (&r, &x, 4);
1353 #else
1354 /* slow emulation, works for anything but -0 */
1355 uint32_t m;
1356 int e;
1357
1358 if (x == 0e0f ) return 0x00000000U;
1359 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1360 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1361 if (x != x ) return 0x7fbfffffU;
1362
1363 m = ecb_frexpf (x, &e) * 0x1000000U;
1364
1365 r = m & 0x80000000U;
1366
1367 if (r)
1368 m = -m;
1369
1370 if (e <= -126)
1371 {
1372 m &= 0xffffffU;
1373 m >>= (-125 - e);
1374 e = -126;
1375 }
1376
1377 r |= (e + 126) << 23;
1378 r |= m & 0x7fffffU;
1379 #endif
1380
1381 return r;
1382 }
1383
1384 /* converts an ieee single/binary32 to a float */
1385 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1386 ecb_function_ ecb_const float
1387 ecb_binary32_to_float (uint32_t x)
1388 {
1389 float r;
1390
1391 #if ECB_STDFP
1392 memcpy (&r, &x, 4);
1393 #else
1394 /* emulation, only works for normals and subnormals and +0 */
1395 int neg = x >> 31;
1396 int e = (x >> 23) & 0xffU;
1397
1398 x &= 0x7fffffU;
1399
1400 if (e)
1401 x |= 0x800000U;
1402 else
1403 e = 1;
1404
1405 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1406 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1407
1408 r = neg ? -r : r;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* convert a double to ieee double/binary64 */
1415 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1416 ecb_function_ ecb_const uint64_t
1417 ecb_double_to_binary64 (double x)
1418 {
1419 uint64_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 8);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint64_t m;
1426 int e;
1427
1428 if (x == 0e0 ) return 0x0000000000000000U;
1429 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1430 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1431 if (x != x ) return 0X7ff7ffffffffffffU;
1432
1433 m = frexp (x, &e) * 0x20000000000000U;
1434
1435 r = m & 0x8000000000000000;;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -1022)
1441 {
1442 m &= 0x1fffffffffffffU;
1443 m >>= (-1021 - e);
1444 e = -1022;
1445 }
1446
1447 r |= ((uint64_t)(e + 1022)) << 52;
1448 r |= m & 0xfffffffffffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee double/binary64 to a double */
1455 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1456 ecb_function_ ecb_const double
1457 ecb_binary64_to_double (uint64_t x)
1458 {
1459 double r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 8);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 63;
1466 int e = (x >> 52) & 0x7ffU;
1467
1468 x &= 0xfffffffffffffU;
1469
1470 if (e)
1471 x |= 0x10000000000000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1476 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a float to ieee half/binary16 */
1485 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1486 ecb_function_ ecb_const uint16_t
1487 ecb_float_to_binary16 (float x)
1488 {
1489 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1490 }
1491
1492 /* convert an ieee half/binary16 to float */
1493 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1494 ecb_function_ ecb_const float
1495 ecb_binary16_to_float (uint16_t x)
1496 {
1497 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1498 }
1499
1500#endif
1501
1502#endif
1503
1504/* ECB.H END */
1505
1506#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1507/* if your architecture doesn't need memory fences, e.g. because it is
1508 * single-cpu/core, or if you use libev in a project that doesn't use libev
1509 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1510 * libev, in which cases the memory fences become nops.
1511 * alternatively, you can remove this #error and link against libpthread,
1512 * which will then provide the memory fences.
1513 */
1514# error "memory fences not defined for your architecture, please report"
1515#endif
1516
1517#ifndef ECB_MEMORY_FENCE
1518# define ECB_MEMORY_FENCE do { } while (0)
1519# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1521#endif
1522
1523#define expect_false(cond) ecb_expect_false (cond)
1524#define expect_true(cond) ecb_expect_true (cond)
1525#define noinline ecb_noinline
1526
388#define inline_size static inline 1527#define inline_size ecb_inline
389 1528
390#if EV_MINIMAL 1529#if EV_FEATURE_CODE
391# define inline_speed static noinline
392#else
393# define inline_speed static inline 1530# define inline_speed ecb_inline
1531#else
1532# define inline_speed noinline static
394#endif 1533#endif
395 1534
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1536
1537#if EV_MINPRI == EV_MAXPRI
1538# define ABSPRI(w) (((W)w), 0)
1539#else
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1540# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1541#endif
398 1542
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1543#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 1544#define EMPTY2(a,b) /* used to suppress some warnings */
401 1545
402typedef ev_watcher *W; 1546typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 1550#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1551#define ev_at(w) ((WT)(w))->at
408 1552
409#if EV_USE_REALTIME 1553#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1554/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */ 1555/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1556static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1557#endif
414 1558
415#if EV_USE_MONOTONIC 1559#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1560static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1561#endif
418 1562
1563#ifndef EV_FD_TO_WIN32_HANDLE
1564# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1565#endif
1566#ifndef EV_WIN32_HANDLE_TO_FD
1567# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1568#endif
1569#ifndef EV_WIN32_CLOSE_FD
1570# define EV_WIN32_CLOSE_FD(fd) close (fd)
1571#endif
1572
419#ifdef _WIN32 1573#ifdef _WIN32
420# include "ev_win32.c" 1574# include "ev_win32.c"
421#endif 1575#endif
422 1576
423/*****************************************************************************/ 1577/*****************************************************************************/
424 1578
1579/* define a suitable floor function (only used by periodics atm) */
1580
1581#if EV_USE_FLOOR
1582# include <math.h>
1583# define ev_floor(v) floor (v)
1584#else
1585
1586#include <float.h>
1587
1588/* a floor() replacement function, should be independent of ev_tstamp type */
1589noinline
1590static ev_tstamp
1591ev_floor (ev_tstamp v)
1592{
1593 /* the choice of shift factor is not terribly important */
1594#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1595 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1596#else
1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1598#endif
1599
1600 /* argument too large for an unsigned long? */
1601 if (expect_false (v >= shift))
1602 {
1603 ev_tstamp f;
1604
1605 if (v == v - 1.)
1606 return v; /* very large number */
1607
1608 f = shift * ev_floor (v * (1. / shift));
1609 return f + ev_floor (v - f);
1610 }
1611
1612 /* special treatment for negative args? */
1613 if (expect_false (v < 0.))
1614 {
1615 ev_tstamp f = -ev_floor (-v);
1616
1617 return f - (f == v ? 0 : 1);
1618 }
1619
1620 /* fits into an unsigned long */
1621 return (unsigned long)v;
1622}
1623
1624#endif
1625
1626/*****************************************************************************/
1627
1628#ifdef __linux
1629# include <sys/utsname.h>
1630#endif
1631
1632noinline ecb_cold
1633static unsigned int
1634ev_linux_version (void)
1635{
1636#ifdef __linux
1637 unsigned int v = 0;
1638 struct utsname buf;
1639 int i;
1640 char *p = buf.release;
1641
1642 if (uname (&buf))
1643 return 0;
1644
1645 for (i = 3+1; --i; )
1646 {
1647 unsigned int c = 0;
1648
1649 for (;;)
1650 {
1651 if (*p >= '0' && *p <= '9')
1652 c = c * 10 + *p++ - '0';
1653 else
1654 {
1655 p += *p == '.';
1656 break;
1657 }
1658 }
1659
1660 v = (v << 8) | c;
1661 }
1662
1663 return v;
1664#else
1665 return 0;
1666#endif
1667}
1668
1669/*****************************************************************************/
1670
1671#if EV_AVOID_STDIO
1672noinline ecb_cold
1673static void
1674ev_printerr (const char *msg)
1675{
1676 write (STDERR_FILENO, msg, strlen (msg));
1677}
1678#endif
1679
425static void (*syserr_cb)(const char *msg); 1680static void (*syserr_cb)(const char *msg) EV_THROW;
426 1681
1682ecb_cold
427void 1683void
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1684ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
429{ 1685{
430 syserr_cb = cb; 1686 syserr_cb = cb;
431} 1687}
432 1688
433static void noinline 1689noinline ecb_cold
1690static void
434ev_syserr (const char *msg) 1691ev_syserr (const char *msg)
435{ 1692{
436 if (!msg) 1693 if (!msg)
437 msg = "(libev) system error"; 1694 msg = "(libev) system error";
438 1695
439 if (syserr_cb) 1696 if (syserr_cb)
440 syserr_cb (msg); 1697 syserr_cb (msg);
441 else 1698 else
442 { 1699 {
1700#if EV_AVOID_STDIO
1701 ev_printerr (msg);
1702 ev_printerr (": ");
1703 ev_printerr (strerror (errno));
1704 ev_printerr ("\n");
1705#else
443 perror (msg); 1706 perror (msg);
1707#endif
444 abort (); 1708 abort ();
445 } 1709 }
446} 1710}
447 1711
448static void * 1712static void *
449ev_realloc_emul (void *ptr, long size) 1713ev_realloc_emul (void *ptr, long size) EV_THROW
450{ 1714{
451 /* some systems, notably openbsd and darwin, fail to properly 1715 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 1716 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 1717 * the single unix specification, so work around them here.
1718 * recently, also (at least) fedora and debian started breaking it,
1719 * despite documenting it otherwise.
454 */ 1720 */
455 1721
456 if (size) 1722 if (size)
457 return realloc (ptr, size); 1723 return realloc (ptr, size);
458 1724
459 free (ptr); 1725 free (ptr);
460 return 0; 1726 return 0;
461} 1727}
462 1728
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1729static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
464 1730
1731ecb_cold
465void 1732void
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1733ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
467{ 1734{
468 alloc = cb; 1735 alloc = cb;
469} 1736}
470 1737
471inline_speed void * 1738inline_speed void *
… …
473{ 1740{
474 ptr = alloc (ptr, size); 1741 ptr = alloc (ptr, size);
475 1742
476 if (!ptr && size) 1743 if (!ptr && size)
477 { 1744 {
1745#if EV_AVOID_STDIO
1746 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1747#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1748 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1749#endif
479 abort (); 1750 abort ();
480 } 1751 }
481 1752
482 return ptr; 1753 return ptr;
483} 1754}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1756#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1757#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1758
488/*****************************************************************************/ 1759/*****************************************************************************/
489 1760
1761/* set in reify when reification needed */
1762#define EV_ANFD_REIFY 1
1763
490/* file descriptor info structure */ 1764/* file descriptor info structure */
491typedef struct 1765typedef struct
492{ 1766{
493 WL head; 1767 WL head;
494 unsigned char events; /* the events watched for */ 1768 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1769 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1770 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 1771 unsigned char unused;
498#if EV_USE_EPOLL 1772#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1773 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1774#endif
501#if EV_SELECT_IS_WINSOCKET 1775#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1776 SOCKET handle;
1777#endif
1778#if EV_USE_IOCP
1779 OVERLAPPED or, ow;
503#endif 1780#endif
504} ANFD; 1781} ANFD;
505 1782
506/* stores the pending event set for a given watcher */ 1783/* stores the pending event set for a given watcher */
507typedef struct 1784typedef struct
… …
549 #undef VAR 1826 #undef VAR
550 }; 1827 };
551 #include "ev_wrap.h" 1828 #include "ev_wrap.h"
552 1829
553 static struct ev_loop default_loop_struct; 1830 static struct ev_loop default_loop_struct;
554 struct ev_loop *ev_default_loop_ptr; 1831 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
555 1832
556#else 1833#else
557 1834
558 ev_tstamp ev_rt_now; 1835 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
559 #define VAR(name,decl) static decl; 1836 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1837 #include "ev_vars.h"
561 #undef VAR 1838 #undef VAR
562 1839
563 static int ev_default_loop_ptr; 1840 static int ev_default_loop_ptr;
564 1841
565#endif 1842#endif
566 1843
1844#if EV_FEATURE_API
1845# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1846# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1847# define EV_INVOKE_PENDING invoke_cb (EV_A)
1848#else
1849# define EV_RELEASE_CB (void)0
1850# define EV_ACQUIRE_CB (void)0
1851# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1852#endif
1853
1854#define EVBREAK_RECURSE 0x80
1855
567/*****************************************************************************/ 1856/*****************************************************************************/
568 1857
1858#ifndef EV_HAVE_EV_TIME
569ev_tstamp 1859ev_tstamp
570ev_time (void) 1860ev_time (void) EV_THROW
571{ 1861{
572#if EV_USE_REALTIME 1862#if EV_USE_REALTIME
573 if (expect_true (have_realtime)) 1863 if (expect_true (have_realtime))
574 { 1864 {
575 struct timespec ts; 1865 struct timespec ts;
… …
580 1870
581 struct timeval tv; 1871 struct timeval tv;
582 gettimeofday (&tv, 0); 1872 gettimeofday (&tv, 0);
583 return tv.tv_sec + tv.tv_usec * 1e-6; 1873 return tv.tv_sec + tv.tv_usec * 1e-6;
584} 1874}
1875#endif
585 1876
586inline_size ev_tstamp 1877inline_size ev_tstamp
587get_clock (void) 1878get_clock (void)
588{ 1879{
589#if EV_USE_MONOTONIC 1880#if EV_USE_MONOTONIC
… …
598 return ev_time (); 1889 return ev_time ();
599} 1890}
600 1891
601#if EV_MULTIPLICITY 1892#if EV_MULTIPLICITY
602ev_tstamp 1893ev_tstamp
603ev_now (EV_P) 1894ev_now (EV_P) EV_THROW
604{ 1895{
605 return ev_rt_now; 1896 return ev_rt_now;
606} 1897}
607#endif 1898#endif
608 1899
609void 1900void
610ev_sleep (ev_tstamp delay) 1901ev_sleep (ev_tstamp delay) EV_THROW
611{ 1902{
612 if (delay > 0.) 1903 if (delay > 0.)
613 { 1904 {
614#if EV_USE_NANOSLEEP 1905#if EV_USE_NANOSLEEP
615 struct timespec ts; 1906 struct timespec ts;
616 1907
617 ts.tv_sec = (time_t)delay; 1908 EV_TS_SET (ts, delay);
618 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
619
620 nanosleep (&ts, 0); 1909 nanosleep (&ts, 0);
621#elif defined(_WIN32) 1910#elif defined _WIN32
1911 /* maybe this should round up, as ms is very low resolution */
1912 /* compared to select (µs) or nanosleep (ns) */
622 Sleep ((unsigned long)(delay * 1e3)); 1913 Sleep ((unsigned long)(delay * 1e3));
623#else 1914#else
624 struct timeval tv; 1915 struct timeval tv;
625 1916
626 tv.tv_sec = (time_t)delay;
627 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
628
629 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1917 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
630 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1918 /* something not guaranteed by newer posix versions, but guaranteed */
631 /* by older ones */ 1919 /* by older ones */
1920 EV_TV_SET (tv, delay);
632 select (0, 0, 0, 0, &tv); 1921 select (0, 0, 0, 0, &tv);
633#endif 1922#endif
634 } 1923 }
635} 1924}
636 1925
637/*****************************************************************************/ 1926/*****************************************************************************/
638 1927
639#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1928#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
640 1929
641/* find a suitable new size for the given array, */ 1930/* find a suitable new size for the given array, */
642/* hopefully by rounding to a ncie-to-malloc size */ 1931/* hopefully by rounding to a nice-to-malloc size */
643inline_size int 1932inline_size int
644array_nextsize (int elem, int cur, int cnt) 1933array_nextsize (int elem, int cur, int cnt)
645{ 1934{
646 int ncur = cur + 1; 1935 int ncur = cur + 1;
647 1936
648 do 1937 do
649 ncur <<= 1; 1938 ncur <<= 1;
650 while (cnt > ncur); 1939 while (cnt > ncur);
651 1940
652 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1941 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
653 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1942 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
654 { 1943 {
655 ncur *= elem; 1944 ncur *= elem;
656 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1945 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
657 ncur = ncur - sizeof (void *) * 4; 1946 ncur = ncur - sizeof (void *) * 4;
… …
659 } 1948 }
660 1949
661 return ncur; 1950 return ncur;
662} 1951}
663 1952
664static noinline void * 1953noinline ecb_cold
1954static void *
665array_realloc (int elem, void *base, int *cur, int cnt) 1955array_realloc (int elem, void *base, int *cur, int cnt)
666{ 1956{
667 *cur = array_nextsize (elem, *cur, cnt); 1957 *cur = array_nextsize (elem, *cur, cnt);
668 return ev_realloc (base, elem * *cur); 1958 return ev_realloc (base, elem * *cur);
669} 1959}
… …
672 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1962 memset ((void *)(base), 0, sizeof (*(base)) * (count))
673 1963
674#define array_needsize(type,base,cur,cnt,init) \ 1964#define array_needsize(type,base,cur,cnt,init) \
675 if (expect_false ((cnt) > (cur))) \ 1965 if (expect_false ((cnt) > (cur))) \
676 { \ 1966 { \
677 int ocur_ = (cur); \ 1967 ecb_unused int ocur_ = (cur); \
678 (base) = (type *)array_realloc \ 1968 (base) = (type *)array_realloc \
679 (sizeof (type), (base), &(cur), (cnt)); \ 1969 (sizeof (type), (base), &(cur), (cnt)); \
680 init ((base) + (ocur_), (cur) - ocur_); \ 1970 init ((base) + (ocur_), (cur) - ocur_); \
681 } 1971 }
682 1972
… …
694 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1984 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
695 1985
696/*****************************************************************************/ 1986/*****************************************************************************/
697 1987
698/* dummy callback for pending events */ 1988/* dummy callback for pending events */
699static void noinline 1989noinline
1990static void
700pendingcb (EV_P_ ev_prepare *w, int revents) 1991pendingcb (EV_P_ ev_prepare *w, int revents)
701{ 1992{
702} 1993}
703 1994
704void noinline 1995noinline
1996void
705ev_feed_event (EV_P_ void *w, int revents) 1997ev_feed_event (EV_P_ void *w, int revents) EV_THROW
706{ 1998{
707 W w_ = (W)w; 1999 W w_ = (W)w;
708 int pri = ABSPRI (w_); 2000 int pri = ABSPRI (w_);
709 2001
710 if (expect_false (w_->pending)) 2002 if (expect_false (w_->pending))
… …
714 w_->pending = ++pendingcnt [pri]; 2006 w_->pending = ++pendingcnt [pri];
715 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2007 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
716 pendings [pri][w_->pending - 1].w = w_; 2008 pendings [pri][w_->pending - 1].w = w_;
717 pendings [pri][w_->pending - 1].events = revents; 2009 pendings [pri][w_->pending - 1].events = revents;
718 } 2010 }
2011
2012 pendingpri = NUMPRI - 1;
719} 2013}
720 2014
721inline_speed void 2015inline_speed void
722feed_reverse (EV_P_ W w) 2016feed_reverse (EV_P_ W w)
723{ 2017{
… …
743} 2037}
744 2038
745/*****************************************************************************/ 2039/*****************************************************************************/
746 2040
747inline_speed void 2041inline_speed void
748fd_event (EV_P_ int fd, int revents) 2042fd_event_nocheck (EV_P_ int fd, int revents)
749{ 2043{
750 ANFD *anfd = anfds + fd; 2044 ANFD *anfd = anfds + fd;
751 ev_io *w; 2045 ev_io *w;
752 2046
753 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2047 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
757 if (ev) 2051 if (ev)
758 ev_feed_event (EV_A_ (W)w, ev); 2052 ev_feed_event (EV_A_ (W)w, ev);
759 } 2053 }
760} 2054}
761 2055
2056/* do not submit kernel events for fds that have reify set */
2057/* because that means they changed while we were polling for new events */
2058inline_speed void
2059fd_event (EV_P_ int fd, int revents)
2060{
2061 ANFD *anfd = anfds + fd;
2062
2063 if (expect_true (!anfd->reify))
2064 fd_event_nocheck (EV_A_ fd, revents);
2065}
2066
762void 2067void
763ev_feed_fd_event (EV_P_ int fd, int revents) 2068ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
764{ 2069{
765 if (fd >= 0 && fd < anfdmax) 2070 if (fd >= 0 && fd < anfdmax)
766 fd_event (EV_A_ fd, revents); 2071 fd_event_nocheck (EV_A_ fd, revents);
767} 2072}
768 2073
769/* make sure the external fd watch events are in-sync */ 2074/* make sure the external fd watch events are in-sync */
770/* with the kernel/libev internal state */ 2075/* with the kernel/libev internal state */
771inline_size void 2076inline_size void
772fd_reify (EV_P) 2077fd_reify (EV_P)
773{ 2078{
774 int i; 2079 int i;
775 2080
2081#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2082 for (i = 0; i < fdchangecnt; ++i)
2083 {
2084 int fd = fdchanges [i];
2085 ANFD *anfd = anfds + fd;
2086
2087 if (anfd->reify & EV__IOFDSET && anfd->head)
2088 {
2089 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2090
2091 if (handle != anfd->handle)
2092 {
2093 unsigned long arg;
2094
2095 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2096
2097 /* handle changed, but fd didn't - we need to do it in two steps */
2098 backend_modify (EV_A_ fd, anfd->events, 0);
2099 anfd->events = 0;
2100 anfd->handle = handle;
2101 }
2102 }
2103 }
2104#endif
2105
776 for (i = 0; i < fdchangecnt; ++i) 2106 for (i = 0; i < fdchangecnt; ++i)
777 { 2107 {
778 int fd = fdchanges [i]; 2108 int fd = fdchanges [i];
779 ANFD *anfd = anfds + fd; 2109 ANFD *anfd = anfds + fd;
780 ev_io *w; 2110 ev_io *w;
781 2111
782 unsigned char events = 0; 2112 unsigned char o_events = anfd->events;
2113 unsigned char o_reify = anfd->reify;
783 2114
784 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2115 anfd->reify = 0;
785 events |= (unsigned char)w->events;
786 2116
787#if EV_SELECT_IS_WINSOCKET 2117 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
788 if (events)
789 { 2118 {
790 unsigned long arg; 2119 anfd->events = 0;
791 #ifdef EV_FD_TO_WIN32_HANDLE 2120
792 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2121 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
793 #else 2122 anfd->events |= (unsigned char)w->events;
794 anfd->handle = _get_osfhandle (fd); 2123
795 #endif 2124 if (o_events != anfd->events)
796 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2125 o_reify = EV__IOFDSET; /* actually |= */
797 } 2126 }
798#endif
799 2127
800 { 2128 if (o_reify & EV__IOFDSET)
801 unsigned char o_events = anfd->events;
802 unsigned char o_reify = anfd->reify;
803
804 anfd->reify = 0;
805 anfd->events = events;
806
807 if (o_events != events || o_reify & EV__IOFDSET)
808 backend_modify (EV_A_ fd, o_events, events); 2129 backend_modify (EV_A_ fd, o_events, anfd->events);
809 }
810 } 2130 }
811 2131
812 fdchangecnt = 0; 2132 fdchangecnt = 0;
813} 2133}
814 2134
815/* something about the given fd changed */ 2135/* something about the given fd changed */
816inline_size void 2136inline_size
2137void
817fd_change (EV_P_ int fd, int flags) 2138fd_change (EV_P_ int fd, int flags)
818{ 2139{
819 unsigned char reify = anfds [fd].reify; 2140 unsigned char reify = anfds [fd].reify;
820 anfds [fd].reify |= flags; 2141 anfds [fd].reify |= flags;
821 2142
… …
826 fdchanges [fdchangecnt - 1] = fd; 2147 fdchanges [fdchangecnt - 1] = fd;
827 } 2148 }
828} 2149}
829 2150
830/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2151/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
831inline_speed void 2152inline_speed ecb_cold void
832fd_kill (EV_P_ int fd) 2153fd_kill (EV_P_ int fd)
833{ 2154{
834 ev_io *w; 2155 ev_io *w;
835 2156
836 while ((w = (ev_io *)anfds [fd].head)) 2157 while ((w = (ev_io *)anfds [fd].head))
… …
838 ev_io_stop (EV_A_ w); 2159 ev_io_stop (EV_A_ w);
839 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2160 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
840 } 2161 }
841} 2162}
842 2163
843/* check whether the given fd is atcually valid, for error recovery */ 2164/* check whether the given fd is actually valid, for error recovery */
844inline_size int 2165inline_size ecb_cold int
845fd_valid (int fd) 2166fd_valid (int fd)
846{ 2167{
847#ifdef _WIN32 2168#ifdef _WIN32
848 return _get_osfhandle (fd) != -1; 2169 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
849#else 2170#else
850 return fcntl (fd, F_GETFD) != -1; 2171 return fcntl (fd, F_GETFD) != -1;
851#endif 2172#endif
852} 2173}
853 2174
854/* called on EBADF to verify fds */ 2175/* called on EBADF to verify fds */
855static void noinline 2176noinline ecb_cold
2177static void
856fd_ebadf (EV_P) 2178fd_ebadf (EV_P)
857{ 2179{
858 int fd; 2180 int fd;
859 2181
860 for (fd = 0; fd < anfdmax; ++fd) 2182 for (fd = 0; fd < anfdmax; ++fd)
… …
862 if (!fd_valid (fd) && errno == EBADF) 2184 if (!fd_valid (fd) && errno == EBADF)
863 fd_kill (EV_A_ fd); 2185 fd_kill (EV_A_ fd);
864} 2186}
865 2187
866/* called on ENOMEM in select/poll to kill some fds and retry */ 2188/* called on ENOMEM in select/poll to kill some fds and retry */
867static void noinline 2189noinline ecb_cold
2190static void
868fd_enomem (EV_P) 2191fd_enomem (EV_P)
869{ 2192{
870 int fd; 2193 int fd;
871 2194
872 for (fd = anfdmax; fd--; ) 2195 for (fd = anfdmax; fd--; )
873 if (anfds [fd].events) 2196 if (anfds [fd].events)
874 { 2197 {
875 fd_kill (EV_A_ fd); 2198 fd_kill (EV_A_ fd);
876 return; 2199 break;
877 } 2200 }
878} 2201}
879 2202
880/* usually called after fork if backend needs to re-arm all fds from scratch */ 2203/* usually called after fork if backend needs to re-arm all fds from scratch */
881static void noinline 2204noinline
2205static void
882fd_rearm_all (EV_P) 2206fd_rearm_all (EV_P)
883{ 2207{
884 int fd; 2208 int fd;
885 2209
886 for (fd = 0; fd < anfdmax; ++fd) 2210 for (fd = 0; fd < anfdmax; ++fd)
887 if (anfds [fd].events) 2211 if (anfds [fd].events)
888 { 2212 {
889 anfds [fd].events = 0; 2213 anfds [fd].events = 0;
890 anfds [fd].emask = 0; 2214 anfds [fd].emask = 0;
891 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2215 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
892 } 2216 }
893} 2217}
894 2218
2219/* used to prepare libev internal fd's */
2220/* this is not fork-safe */
2221inline_speed void
2222fd_intern (int fd)
2223{
2224#ifdef _WIN32
2225 unsigned long arg = 1;
2226 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2227#else
2228 fcntl (fd, F_SETFD, FD_CLOEXEC);
2229 fcntl (fd, F_SETFL, O_NONBLOCK);
2230#endif
2231}
2232
895/*****************************************************************************/ 2233/*****************************************************************************/
896 2234
897/* 2235/*
898 * the heap functions want a real array index. array index 0 uis guaranteed to not 2236 * the heap functions want a real array index. array index 0 is guaranteed to not
899 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2237 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
900 * the branching factor of the d-tree. 2238 * the branching factor of the d-tree.
901 */ 2239 */
902 2240
903/* 2241/*
… …
971 2309
972 for (;;) 2310 for (;;)
973 { 2311 {
974 int c = k << 1; 2312 int c = k << 1;
975 2313
976 if (c > N + HEAP0 - 1) 2314 if (c >= N + HEAP0)
977 break; 2315 break;
978 2316
979 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2317 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
980 ? 1 : 0; 2318 ? 1 : 0;
981 2319
… …
1017 2355
1018/* move an element suitably so it is in a correct place */ 2356/* move an element suitably so it is in a correct place */
1019inline_size void 2357inline_size void
1020adjustheap (ANHE *heap, int N, int k) 2358adjustheap (ANHE *heap, int N, int k)
1021{ 2359{
1022 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2360 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1023 upheap (heap, k); 2361 upheap (heap, k);
1024 else 2362 else
1025 downheap (heap, N, k); 2363 downheap (heap, N, k);
1026} 2364}
1027 2365
… …
1040/*****************************************************************************/ 2378/*****************************************************************************/
1041 2379
1042/* associate signal watchers to a signal signal */ 2380/* associate signal watchers to a signal signal */
1043typedef struct 2381typedef struct
1044{ 2382{
2383 EV_ATOMIC_T pending;
2384#if EV_MULTIPLICITY
2385 EV_P;
2386#endif
1045 WL head; 2387 WL head;
1046 EV_ATOMIC_T gotsig;
1047} ANSIG; 2388} ANSIG;
1048 2389
1049static ANSIG *signals; 2390static ANSIG signals [EV_NSIG - 1];
1050static int signalmax;
1051
1052static EV_ATOMIC_T gotsig;
1053 2391
1054/*****************************************************************************/ 2392/*****************************************************************************/
1055 2393
1056/* used to prepare libev internal fd's */ 2394#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1057/* this is not fork-safe */ 2395
2396noinline ecb_cold
2397static void
2398evpipe_init (EV_P)
2399{
2400 if (!ev_is_active (&pipe_w))
2401 {
2402 int fds [2];
2403
2404# if EV_USE_EVENTFD
2405 fds [0] = -1;
2406 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2407 if (fds [1] < 0 && errno == EINVAL)
2408 fds [1] = eventfd (0, 0);
2409
2410 if (fds [1] < 0)
2411# endif
2412 {
2413 while (pipe (fds))
2414 ev_syserr ("(libev) error creating signal/async pipe");
2415
2416 fd_intern (fds [0]);
2417 }
2418
2419 evpipe [0] = fds [0];
2420
2421 if (evpipe [1] < 0)
2422 evpipe [1] = fds [1]; /* first call, set write fd */
2423 else
2424 {
2425 /* on subsequent calls, do not change evpipe [1] */
2426 /* so that evpipe_write can always rely on its value. */
2427 /* this branch does not do anything sensible on windows, */
2428 /* so must not be executed on windows */
2429
2430 dup2 (fds [1], evpipe [1]);
2431 close (fds [1]);
2432 }
2433
2434 fd_intern (evpipe [1]);
2435
2436 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2437 ev_io_start (EV_A_ &pipe_w);
2438 ev_unref (EV_A); /* watcher should not keep loop alive */
2439 }
2440}
2441
1058inline_speed void 2442inline_speed void
1059fd_intern (int fd) 2443evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1060{ 2444{
1061#ifdef _WIN32 2445 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1062 unsigned long arg = 1;
1063 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1064#else
1065 fcntl (fd, F_SETFD, FD_CLOEXEC);
1066 fcntl (fd, F_SETFL, O_NONBLOCK);
1067#endif
1068}
1069 2446
1070static void noinline 2447 if (expect_true (*flag))
1071evpipe_init (EV_P) 2448 return;
1072{ 2449
1073 if (!ev_is_active (&pipe_w)) 2450 *flag = 1;
2451 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2452
2453 pipe_write_skipped = 1;
2454
2455 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2456
2457 if (pipe_write_wanted)
1074 { 2458 {
2459 int old_errno;
2460
2461 pipe_write_skipped = 0;
2462 ECB_MEMORY_FENCE_RELEASE;
2463
2464 old_errno = errno; /* save errno because write will clobber it */
2465
1075#if EV_USE_EVENTFD 2466#if EV_USE_EVENTFD
1076 if ((evfd = eventfd (0, 0)) >= 0) 2467 if (evpipe [0] < 0)
1077 { 2468 {
1078 evpipe [0] = -1; 2469 uint64_t counter = 1;
1079 fd_intern (evfd); 2470 write (evpipe [1], &counter, sizeof (uint64_t));
1080 ev_io_set (&pipe_w, evfd, EV_READ);
1081 } 2471 }
1082 else 2472 else
1083#endif 2473#endif
1084 { 2474 {
1085 while (pipe (evpipe)) 2475#ifdef _WIN32
1086 ev_syserr ("(libev) error creating signal/async pipe"); 2476 WSABUF buf;
1087 2477 DWORD sent;
1088 fd_intern (evpipe [0]); 2478 buf.buf = &buf;
1089 fd_intern (evpipe [1]); 2479 buf.len = 1;
1090 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2480 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2481#else
2482 write (evpipe [1], &(evpipe [1]), 1);
2483#endif
1091 } 2484 }
1092
1093 ev_io_start (EV_A_ &pipe_w);
1094 ev_unref (EV_A); /* watcher should not keep loop alive */
1095 }
1096}
1097
1098inline_size void
1099evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1100{
1101 if (!*flag)
1102 {
1103 int old_errno = errno; /* save errno because write might clobber it */
1104
1105 *flag = 1;
1106
1107#if EV_USE_EVENTFD
1108 if (evfd >= 0)
1109 {
1110 uint64_t counter = 1;
1111 write (evfd, &counter, sizeof (uint64_t));
1112 }
1113 else
1114#endif
1115 write (evpipe [1], &old_errno, 1);
1116 2485
1117 errno = old_errno; 2486 errno = old_errno;
1118 } 2487 }
1119} 2488}
1120 2489
1121/* called whenever the libev signal pipe */ 2490/* called whenever the libev signal pipe */
1122/* got some events (signal, async) */ 2491/* got some events (signal, async) */
1123static void 2492static void
1124pipecb (EV_P_ ev_io *iow, int revents) 2493pipecb (EV_P_ ev_io *iow, int revents)
1125{ 2494{
2495 int i;
2496
2497 if (revents & EV_READ)
2498 {
1126#if EV_USE_EVENTFD 2499#if EV_USE_EVENTFD
1127 if (evfd >= 0) 2500 if (evpipe [0] < 0)
1128 { 2501 {
1129 uint64_t counter; 2502 uint64_t counter;
1130 read (evfd, &counter, sizeof (uint64_t)); 2503 read (evpipe [1], &counter, sizeof (uint64_t));
1131 } 2504 }
1132 else 2505 else
1133#endif 2506#endif
1134 { 2507 {
1135 char dummy; 2508 char dummy[4];
2509#ifdef _WIN32
2510 WSABUF buf;
2511 DWORD recvd;
2512 DWORD flags = 0;
2513 buf.buf = dummy;
2514 buf.len = sizeof (dummy);
2515 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2516#else
1136 read (evpipe [0], &dummy, 1); 2517 read (evpipe [0], &dummy, sizeof (dummy));
2518#endif
2519 }
2520 }
2521
2522 pipe_write_skipped = 0;
2523
2524 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2525
2526#if EV_SIGNAL_ENABLE
2527 if (sig_pending)
1137 } 2528 {
2529 sig_pending = 0;
1138 2530
1139 if (gotsig && ev_is_default_loop (EV_A)) 2531 ECB_MEMORY_FENCE;
1140 {
1141 int signum;
1142 gotsig = 0;
1143 2532
1144 for (signum = signalmax; signum--; ) 2533 for (i = EV_NSIG - 1; i--; )
1145 if (signals [signum].gotsig) 2534 if (expect_false (signals [i].pending))
1146 ev_feed_signal_event (EV_A_ signum + 1); 2535 ev_feed_signal_event (EV_A_ i + 1);
1147 } 2536 }
2537#endif
1148 2538
1149#if EV_ASYNC_ENABLE 2539#if EV_ASYNC_ENABLE
1150 if (gotasync) 2540 if (async_pending)
1151 { 2541 {
1152 int i; 2542 async_pending = 0;
1153 gotasync = 0; 2543
2544 ECB_MEMORY_FENCE;
1154 2545
1155 for (i = asynccnt; i--; ) 2546 for (i = asynccnt; i--; )
1156 if (asyncs [i]->sent) 2547 if (asyncs [i]->sent)
1157 { 2548 {
1158 asyncs [i]->sent = 0; 2549 asyncs [i]->sent = 0;
2550 ECB_MEMORY_FENCE_RELEASE;
1159 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2551 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1160 } 2552 }
1161 } 2553 }
1162#endif 2554#endif
1163} 2555}
1164 2556
1165/*****************************************************************************/ 2557/*****************************************************************************/
1166 2558
2559void
2560ev_feed_signal (int signum) EV_THROW
2561{
2562#if EV_MULTIPLICITY
2563 EV_P;
2564 ECB_MEMORY_FENCE_ACQUIRE;
2565 EV_A = signals [signum - 1].loop;
2566
2567 if (!EV_A)
2568 return;
2569#endif
2570
2571 signals [signum - 1].pending = 1;
2572 evpipe_write (EV_A_ &sig_pending);
2573}
2574
1167static void 2575static void
1168ev_sighandler (int signum) 2576ev_sighandler (int signum)
1169{ 2577{
2578#ifdef _WIN32
2579 signal (signum, ev_sighandler);
2580#endif
2581
2582 ev_feed_signal (signum);
2583}
2584
2585noinline
2586void
2587ev_feed_signal_event (EV_P_ int signum) EV_THROW
2588{
2589 WL w;
2590
2591 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2592 return;
2593
2594 --signum;
2595
1170#if EV_MULTIPLICITY 2596#if EV_MULTIPLICITY
1171 struct ev_loop *loop = &default_loop_struct; 2597 /* it is permissible to try to feed a signal to the wrong loop */
1172#endif 2598 /* or, likely more useful, feeding a signal nobody is waiting for */
1173 2599
1174#if _WIN32 2600 if (expect_false (signals [signum].loop != EV_A))
1175 signal (signum, ev_sighandler);
1176#endif
1177
1178 signals [signum - 1].gotsig = 1;
1179 evpipe_write (EV_A_ &gotsig);
1180}
1181
1182void noinline
1183ev_feed_signal_event (EV_P_ int signum)
1184{
1185 WL w;
1186
1187#if EV_MULTIPLICITY
1188 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1189#endif
1190
1191 --signum;
1192
1193 if (signum < 0 || signum >= signalmax)
1194 return; 2601 return;
2602#endif
1195 2603
1196 signals [signum].gotsig = 0; 2604 signals [signum].pending = 0;
2605 ECB_MEMORY_FENCE_RELEASE;
1197 2606
1198 for (w = signals [signum].head; w; w = w->next) 2607 for (w = signals [signum].head; w; w = w->next)
1199 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2608 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1200} 2609}
1201 2610
2611#if EV_USE_SIGNALFD
2612static void
2613sigfdcb (EV_P_ ev_io *iow, int revents)
2614{
2615 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2616
2617 for (;;)
2618 {
2619 ssize_t res = read (sigfd, si, sizeof (si));
2620
2621 /* not ISO-C, as res might be -1, but works with SuS */
2622 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2623 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2624
2625 if (res < (ssize_t)sizeof (si))
2626 break;
2627 }
2628}
2629#endif
2630
2631#endif
2632
1202/*****************************************************************************/ 2633/*****************************************************************************/
1203 2634
2635#if EV_CHILD_ENABLE
1204static WL childs [EV_PID_HASHSIZE]; 2636static WL childs [EV_PID_HASHSIZE];
1205
1206#ifndef _WIN32
1207 2637
1208static ev_signal childev; 2638static ev_signal childev;
1209 2639
1210#ifndef WIFCONTINUED 2640#ifndef WIFCONTINUED
1211# define WIFCONTINUED(status) 0 2641# define WIFCONTINUED(status) 0
… …
1216child_reap (EV_P_ int chain, int pid, int status) 2646child_reap (EV_P_ int chain, int pid, int status)
1217{ 2647{
1218 ev_child *w; 2648 ev_child *w;
1219 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2649 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1220 2650
1221 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2651 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1222 { 2652 {
1223 if ((w->pid == pid || !w->pid) 2653 if ((w->pid == pid || !w->pid)
1224 && (!traced || (w->flags & 1))) 2654 && (!traced || (w->flags & 1)))
1225 { 2655 {
1226 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2656 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1251 /* make sure we are called again until all children have been reaped */ 2681 /* make sure we are called again until all children have been reaped */
1252 /* we need to do it this way so that the callback gets called before we continue */ 2682 /* we need to do it this way so that the callback gets called before we continue */
1253 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2683 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1254 2684
1255 child_reap (EV_A_ pid, pid, status); 2685 child_reap (EV_A_ pid, pid, status);
1256 if (EV_PID_HASHSIZE > 1) 2686 if ((EV_PID_HASHSIZE) > 1)
1257 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2687 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1258} 2688}
1259 2689
1260#endif 2690#endif
1261 2691
1262/*****************************************************************************/ 2692/*****************************************************************************/
1263 2693
2694#if EV_USE_IOCP
2695# include "ev_iocp.c"
2696#endif
1264#if EV_USE_PORT 2697#if EV_USE_PORT
1265# include "ev_port.c" 2698# include "ev_port.c"
1266#endif 2699#endif
1267#if EV_USE_KQUEUE 2700#if EV_USE_KQUEUE
1268# include "ev_kqueue.c" 2701# include "ev_kqueue.c"
… …
1275#endif 2708#endif
1276#if EV_USE_SELECT 2709#if EV_USE_SELECT
1277# include "ev_select.c" 2710# include "ev_select.c"
1278#endif 2711#endif
1279 2712
1280int 2713ecb_cold int
1281ev_version_major (void) 2714ev_version_major (void) EV_THROW
1282{ 2715{
1283 return EV_VERSION_MAJOR; 2716 return EV_VERSION_MAJOR;
1284} 2717}
1285 2718
1286int 2719ecb_cold int
1287ev_version_minor (void) 2720ev_version_minor (void) EV_THROW
1288{ 2721{
1289 return EV_VERSION_MINOR; 2722 return EV_VERSION_MINOR;
1290} 2723}
1291 2724
1292/* return true if we are running with elevated privileges and should ignore env variables */ 2725/* return true if we are running with elevated privileges and should ignore env variables */
1293int inline_size 2726inline_size ecb_cold int
1294enable_secure (void) 2727enable_secure (void)
1295{ 2728{
1296#ifdef _WIN32 2729#ifdef _WIN32
1297 return 0; 2730 return 0;
1298#else 2731#else
1299 return getuid () != geteuid () 2732 return getuid () != geteuid ()
1300 || getgid () != getegid (); 2733 || getgid () != getegid ();
1301#endif 2734#endif
1302} 2735}
1303 2736
2737ecb_cold
1304unsigned int 2738unsigned int
1305ev_supported_backends (void) 2739ev_supported_backends (void) EV_THROW
1306{ 2740{
1307 unsigned int flags = 0; 2741 unsigned int flags = 0;
1308 2742
1309 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2743 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1310 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2744 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1313 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2747 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1314 2748
1315 return flags; 2749 return flags;
1316} 2750}
1317 2751
2752ecb_cold
1318unsigned int 2753unsigned int
1319ev_recommended_backends (void) 2754ev_recommended_backends (void) EV_THROW
1320{ 2755{
1321 unsigned int flags = ev_supported_backends (); 2756 unsigned int flags = ev_supported_backends ();
1322 2757
1323#ifndef __NetBSD__ 2758#ifndef __NetBSD__
1324 /* kqueue is borked on everything but netbsd apparently */ 2759 /* kqueue is borked on everything but netbsd apparently */
… …
1328#ifdef __APPLE__ 2763#ifdef __APPLE__
1329 /* only select works correctly on that "unix-certified" platform */ 2764 /* only select works correctly on that "unix-certified" platform */
1330 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2765 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1331 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2766 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1332#endif 2767#endif
2768#ifdef __FreeBSD__
2769 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2770#endif
1333 2771
1334 return flags; 2772 return flags;
1335} 2773}
1336 2774
2775ecb_cold
1337unsigned int 2776unsigned int
1338ev_embeddable_backends (void) 2777ev_embeddable_backends (void) EV_THROW
1339{ 2778{
1340 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2779 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1341 2780
1342 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2781 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1343 /* please fix it and tell me how to detect the fix */ 2782 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1344 flags &= ~EVBACKEND_EPOLL; 2783 flags &= ~EVBACKEND_EPOLL;
1345 2784
1346 return flags; 2785 return flags;
1347} 2786}
1348 2787
1349unsigned int 2788unsigned int
1350ev_backend (EV_P) 2789ev_backend (EV_P) EV_THROW
1351{ 2790{
1352 return backend; 2791 return backend;
1353} 2792}
1354 2793
2794#if EV_FEATURE_API
1355unsigned int 2795unsigned int
1356ev_loop_count (EV_P) 2796ev_iteration (EV_P) EV_THROW
1357{ 2797{
1358 return loop_count; 2798 return loop_count;
1359} 2799}
1360 2800
2801unsigned int
2802ev_depth (EV_P) EV_THROW
2803{
2804 return loop_depth;
2805}
2806
1361void 2807void
1362ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2808ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1363{ 2809{
1364 io_blocktime = interval; 2810 io_blocktime = interval;
1365} 2811}
1366 2812
1367void 2813void
1368ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2814ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1369{ 2815{
1370 timeout_blocktime = interval; 2816 timeout_blocktime = interval;
1371} 2817}
1372 2818
2819void
2820ev_set_userdata (EV_P_ void *data) EV_THROW
2821{
2822 userdata = data;
2823}
2824
2825void *
2826ev_userdata (EV_P) EV_THROW
2827{
2828 return userdata;
2829}
2830
2831void
2832ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2833{
2834 invoke_cb = invoke_pending_cb;
2835}
2836
2837void
2838ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2839{
2840 release_cb = release;
2841 acquire_cb = acquire;
2842}
2843#endif
2844
1373/* initialise a loop structure, must be zero-initialised */ 2845/* initialise a loop structure, must be zero-initialised */
1374static void noinline 2846noinline ecb_cold
2847static void
1375loop_init (EV_P_ unsigned int flags) 2848loop_init (EV_P_ unsigned int flags) EV_THROW
1376{ 2849{
1377 if (!backend) 2850 if (!backend)
1378 { 2851 {
2852 origflags = flags;
2853
1379#if EV_USE_REALTIME 2854#if EV_USE_REALTIME
1380 if (!have_realtime) 2855 if (!have_realtime)
1381 { 2856 {
1382 struct timespec ts; 2857 struct timespec ts;
1383 2858
… …
1394 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2869 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1395 have_monotonic = 1; 2870 have_monotonic = 1;
1396 } 2871 }
1397#endif 2872#endif
1398 2873
1399 ev_rt_now = ev_time ();
1400 mn_now = get_clock ();
1401 now_floor = mn_now;
1402 rtmn_diff = ev_rt_now - mn_now;
1403
1404 io_blocktime = 0.;
1405 timeout_blocktime = 0.;
1406 backend = 0;
1407 backend_fd = -1;
1408 gotasync = 0;
1409#if EV_USE_INOTIFY
1410 fs_fd = -2;
1411#endif
1412
1413 /* pid check not overridable via env */ 2874 /* pid check not overridable via env */
1414#ifndef _WIN32 2875#ifndef _WIN32
1415 if (flags & EVFLAG_FORKCHECK) 2876 if (flags & EVFLAG_FORKCHECK)
1416 curpid = getpid (); 2877 curpid = getpid ();
1417#endif 2878#endif
… …
1419 if (!(flags & EVFLAG_NOENV) 2880 if (!(flags & EVFLAG_NOENV)
1420 && !enable_secure () 2881 && !enable_secure ()
1421 && getenv ("LIBEV_FLAGS")) 2882 && getenv ("LIBEV_FLAGS"))
1422 flags = atoi (getenv ("LIBEV_FLAGS")); 2883 flags = atoi (getenv ("LIBEV_FLAGS"));
1423 2884
1424 if (!(flags & 0x0000ffffU)) 2885 ev_rt_now = ev_time ();
2886 mn_now = get_clock ();
2887 now_floor = mn_now;
2888 rtmn_diff = ev_rt_now - mn_now;
2889#if EV_FEATURE_API
2890 invoke_cb = ev_invoke_pending;
2891#endif
2892
2893 io_blocktime = 0.;
2894 timeout_blocktime = 0.;
2895 backend = 0;
2896 backend_fd = -1;
2897 sig_pending = 0;
2898#if EV_ASYNC_ENABLE
2899 async_pending = 0;
2900#endif
2901 pipe_write_skipped = 0;
2902 pipe_write_wanted = 0;
2903 evpipe [0] = -1;
2904 evpipe [1] = -1;
2905#if EV_USE_INOTIFY
2906 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2907#endif
2908#if EV_USE_SIGNALFD
2909 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2910#endif
2911
2912 if (!(flags & EVBACKEND_MASK))
1425 flags |= ev_recommended_backends (); 2913 flags |= ev_recommended_backends ();
1426 2914
2915#if EV_USE_IOCP
2916 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2917#endif
1427#if EV_USE_PORT 2918#if EV_USE_PORT
1428 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2919 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1429#endif 2920#endif
1430#if EV_USE_KQUEUE 2921#if EV_USE_KQUEUE
1431 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2922 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1440 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2931 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1441#endif 2932#endif
1442 2933
1443 ev_prepare_init (&pending_w, pendingcb); 2934 ev_prepare_init (&pending_w, pendingcb);
1444 2935
2936#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1445 ev_init (&pipe_w, pipecb); 2937 ev_init (&pipe_w, pipecb);
1446 ev_set_priority (&pipe_w, EV_MAXPRI); 2938 ev_set_priority (&pipe_w, EV_MAXPRI);
2939#endif
1447 } 2940 }
1448} 2941}
1449 2942
1450/* free up a loop structure */ 2943/* free up a loop structure */
1451static void noinline 2944ecb_cold
2945void
1452loop_destroy (EV_P) 2946ev_loop_destroy (EV_P)
1453{ 2947{
1454 int i; 2948 int i;
1455 2949
2950#if EV_MULTIPLICITY
2951 /* mimic free (0) */
2952 if (!EV_A)
2953 return;
2954#endif
2955
2956#if EV_CLEANUP_ENABLE
2957 /* queue cleanup watchers (and execute them) */
2958 if (expect_false (cleanupcnt))
2959 {
2960 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2961 EV_INVOKE_PENDING;
2962 }
2963#endif
2964
2965#if EV_CHILD_ENABLE
2966 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2967 {
2968 ev_ref (EV_A); /* child watcher */
2969 ev_signal_stop (EV_A_ &childev);
2970 }
2971#endif
2972
1456 if (ev_is_active (&pipe_w)) 2973 if (ev_is_active (&pipe_w))
1457 { 2974 {
1458 ev_ref (EV_A); /* signal watcher */ 2975 /*ev_ref (EV_A);*/
1459 ev_io_stop (EV_A_ &pipe_w); 2976 /*ev_io_stop (EV_A_ &pipe_w);*/
1460 2977
2978 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2979 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2980 }
2981
1461#if EV_USE_EVENTFD 2982#if EV_USE_SIGNALFD
1462 if (evfd >= 0) 2983 if (ev_is_active (&sigfd_w))
1463 close (evfd); 2984 close (sigfd);
1464#endif 2985#endif
1465
1466 if (evpipe [0] >= 0)
1467 {
1468 close (evpipe [0]);
1469 close (evpipe [1]);
1470 }
1471 }
1472 2986
1473#if EV_USE_INOTIFY 2987#if EV_USE_INOTIFY
1474 if (fs_fd >= 0) 2988 if (fs_fd >= 0)
1475 close (fs_fd); 2989 close (fs_fd);
1476#endif 2990#endif
1477 2991
1478 if (backend_fd >= 0) 2992 if (backend_fd >= 0)
1479 close (backend_fd); 2993 close (backend_fd);
1480 2994
2995#if EV_USE_IOCP
2996 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2997#endif
1481#if EV_USE_PORT 2998#if EV_USE_PORT
1482 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2999 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1483#endif 3000#endif
1484#if EV_USE_KQUEUE 3001#if EV_USE_KQUEUE
1485 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3002 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1500#if EV_IDLE_ENABLE 3017#if EV_IDLE_ENABLE
1501 array_free (idle, [i]); 3018 array_free (idle, [i]);
1502#endif 3019#endif
1503 } 3020 }
1504 3021
1505 ev_free (anfds); anfdmax = 0; 3022 ev_free (anfds); anfds = 0; anfdmax = 0;
1506 3023
1507 /* have to use the microsoft-never-gets-it-right macro */ 3024 /* have to use the microsoft-never-gets-it-right macro */
1508 array_free (rfeed, EMPTY); 3025 array_free (rfeed, EMPTY);
1509 array_free (fdchange, EMPTY); 3026 array_free (fdchange, EMPTY);
1510 array_free (timer, EMPTY); 3027 array_free (timer, EMPTY);
… …
1512 array_free (periodic, EMPTY); 3029 array_free (periodic, EMPTY);
1513#endif 3030#endif
1514#if EV_FORK_ENABLE 3031#if EV_FORK_ENABLE
1515 array_free (fork, EMPTY); 3032 array_free (fork, EMPTY);
1516#endif 3033#endif
3034#if EV_CLEANUP_ENABLE
3035 array_free (cleanup, EMPTY);
3036#endif
1517 array_free (prepare, EMPTY); 3037 array_free (prepare, EMPTY);
1518 array_free (check, EMPTY); 3038 array_free (check, EMPTY);
1519#if EV_ASYNC_ENABLE 3039#if EV_ASYNC_ENABLE
1520 array_free (async, EMPTY); 3040 array_free (async, EMPTY);
1521#endif 3041#endif
1522 3042
1523 backend = 0; 3043 backend = 0;
3044
3045#if EV_MULTIPLICITY
3046 if (ev_is_default_loop (EV_A))
3047#endif
3048 ev_default_loop_ptr = 0;
3049#if EV_MULTIPLICITY
3050 else
3051 ev_free (EV_A);
3052#endif
1524} 3053}
1525 3054
1526#if EV_USE_INOTIFY 3055#if EV_USE_INOTIFY
1527inline_size void infy_fork (EV_P); 3056inline_size void infy_fork (EV_P);
1528#endif 3057#endif
… …
1541#endif 3070#endif
1542#if EV_USE_INOTIFY 3071#if EV_USE_INOTIFY
1543 infy_fork (EV_A); 3072 infy_fork (EV_A);
1544#endif 3073#endif
1545 3074
3075#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1546 if (ev_is_active (&pipe_w)) 3076 if (ev_is_active (&pipe_w) && postfork != 2)
1547 { 3077 {
1548 /* this "locks" the handlers against writing to the pipe */ 3078 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1549 /* while we modify the fd vars */
1550 gotsig = 1;
1551#if EV_ASYNC_ENABLE
1552 gotasync = 1;
1553#endif
1554 3079
1555 ev_ref (EV_A); 3080 ev_ref (EV_A);
1556 ev_io_stop (EV_A_ &pipe_w); 3081 ev_io_stop (EV_A_ &pipe_w);
1557 3082
1558#if EV_USE_EVENTFD
1559 if (evfd >= 0)
1560 close (evfd);
1561#endif
1562
1563 if (evpipe [0] >= 0) 3083 if (evpipe [0] >= 0)
1564 { 3084 EV_WIN32_CLOSE_FD (evpipe [0]);
1565 close (evpipe [0]);
1566 close (evpipe [1]);
1567 }
1568 3085
1569 evpipe_init (EV_A); 3086 evpipe_init (EV_A);
1570 /* now iterate over everything, in case we missed something */ 3087 /* iterate over everything, in case we missed something before */
1571 pipecb (EV_A_ &pipe_w, EV_READ); 3088 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1572 } 3089 }
3090#endif
1573 3091
1574 postfork = 0; 3092 postfork = 0;
1575} 3093}
1576 3094
1577#if EV_MULTIPLICITY 3095#if EV_MULTIPLICITY
1578 3096
3097ecb_cold
1579struct ev_loop * 3098struct ev_loop *
1580ev_loop_new (unsigned int flags) 3099ev_loop_new (unsigned int flags) EV_THROW
1581{ 3100{
1582 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3101 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1583 3102
1584 memset (loop, 0, sizeof (struct ev_loop)); 3103 memset (EV_A, 0, sizeof (struct ev_loop));
1585
1586 loop_init (EV_A_ flags); 3104 loop_init (EV_A_ flags);
1587 3105
1588 if (ev_backend (EV_A)) 3106 if (ev_backend (EV_A))
1589 return loop; 3107 return EV_A;
1590 3108
3109 ev_free (EV_A);
1591 return 0; 3110 return 0;
1592} 3111}
1593 3112
1594void 3113#endif /* multiplicity */
1595ev_loop_destroy (EV_P)
1596{
1597 loop_destroy (EV_A);
1598 ev_free (loop);
1599}
1600
1601void
1602ev_loop_fork (EV_P)
1603{
1604 postfork = 1; /* must be in line with ev_default_fork */
1605}
1606 3114
1607#if EV_VERIFY 3115#if EV_VERIFY
1608static void noinline 3116noinline ecb_cold
3117static void
1609verify_watcher (EV_P_ W w) 3118verify_watcher (EV_P_ W w)
1610{ 3119{
1611 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3120 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1612 3121
1613 if (w->pending) 3122 if (w->pending)
1614 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3123 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1615} 3124}
1616 3125
1617static void noinline 3126noinline ecb_cold
3127static void
1618verify_heap (EV_P_ ANHE *heap, int N) 3128verify_heap (EV_P_ ANHE *heap, int N)
1619{ 3129{
1620 int i; 3130 int i;
1621 3131
1622 for (i = HEAP0; i < N + HEAP0; ++i) 3132 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1627 3137
1628 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3138 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1629 } 3139 }
1630} 3140}
1631 3141
1632static void noinline 3142noinline ecb_cold
3143static void
1633array_verify (EV_P_ W *ws, int cnt) 3144array_verify (EV_P_ W *ws, int cnt)
1634{ 3145{
1635 while (cnt--) 3146 while (cnt--)
1636 { 3147 {
1637 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3148 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1638 verify_watcher (EV_A_ ws [cnt]); 3149 verify_watcher (EV_A_ ws [cnt]);
1639 } 3150 }
1640} 3151}
1641#endif 3152#endif
1642 3153
1643void 3154#if EV_FEATURE_API
1644ev_loop_verify (EV_P) 3155void ecb_cold
3156ev_verify (EV_P) EV_THROW
1645{ 3157{
1646#if EV_VERIFY 3158#if EV_VERIFY
1647 int i; 3159 int i;
1648 WL w; 3160 WL w, w2;
1649 3161
1650 assert (activecnt >= -1); 3162 assert (activecnt >= -1);
1651 3163
1652 assert (fdchangemax >= fdchangecnt); 3164 assert (fdchangemax >= fdchangecnt);
1653 for (i = 0; i < fdchangecnt; ++i) 3165 for (i = 0; i < fdchangecnt; ++i)
1654 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3166 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1655 3167
1656 assert (anfdmax >= 0); 3168 assert (anfdmax >= 0);
1657 for (i = 0; i < anfdmax; ++i) 3169 for (i = 0; i < anfdmax; ++i)
3170 {
3171 int j = 0;
3172
1658 for (w = anfds [i].head; w; w = w->next) 3173 for (w = w2 = anfds [i].head; w; w = w->next)
1659 { 3174 {
1660 verify_watcher (EV_A_ (W)w); 3175 verify_watcher (EV_A_ (W)w);
3176
3177 if (j++ & 1)
3178 {
3179 assert (("libev: io watcher list contains a loop", w != w2));
3180 w2 = w2->next;
3181 }
3182
1661 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3183 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1662 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3184 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1663 } 3185 }
3186 }
1664 3187
1665 assert (timermax >= timercnt); 3188 assert (timermax >= timercnt);
1666 verify_heap (EV_A_ timers, timercnt); 3189 verify_heap (EV_A_ timers, timercnt);
1667 3190
1668#if EV_PERIODIC_ENABLE 3191#if EV_PERIODIC_ENABLE
… …
1683#if EV_FORK_ENABLE 3206#if EV_FORK_ENABLE
1684 assert (forkmax >= forkcnt); 3207 assert (forkmax >= forkcnt);
1685 array_verify (EV_A_ (W *)forks, forkcnt); 3208 array_verify (EV_A_ (W *)forks, forkcnt);
1686#endif 3209#endif
1687 3210
3211#if EV_CLEANUP_ENABLE
3212 assert (cleanupmax >= cleanupcnt);
3213 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3214#endif
3215
1688#if EV_ASYNC_ENABLE 3216#if EV_ASYNC_ENABLE
1689 assert (asyncmax >= asynccnt); 3217 assert (asyncmax >= asynccnt);
1690 array_verify (EV_A_ (W *)asyncs, asynccnt); 3218 array_verify (EV_A_ (W *)asyncs, asynccnt);
1691#endif 3219#endif
1692 3220
3221#if EV_PREPARE_ENABLE
1693 assert (preparemax >= preparecnt); 3222 assert (preparemax >= preparecnt);
1694 array_verify (EV_A_ (W *)prepares, preparecnt); 3223 array_verify (EV_A_ (W *)prepares, preparecnt);
3224#endif
1695 3225
3226#if EV_CHECK_ENABLE
1696 assert (checkmax >= checkcnt); 3227 assert (checkmax >= checkcnt);
1697 array_verify (EV_A_ (W *)checks, checkcnt); 3228 array_verify (EV_A_ (W *)checks, checkcnt);
3229#endif
1698 3230
1699# if 0 3231# if 0
3232#if EV_CHILD_ENABLE
1700 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3233 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1701 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3234 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3235#endif
1702# endif 3236# endif
1703#endif 3237#endif
1704} 3238}
1705 3239#endif
1706#endif /* multiplicity */
1707 3240
1708#if EV_MULTIPLICITY 3241#if EV_MULTIPLICITY
3242ecb_cold
1709struct ev_loop * 3243struct ev_loop *
1710ev_default_loop_init (unsigned int flags)
1711#else 3244#else
1712int 3245int
3246#endif
1713ev_default_loop (unsigned int flags) 3247ev_default_loop (unsigned int flags) EV_THROW
1714#endif
1715{ 3248{
1716 if (!ev_default_loop_ptr) 3249 if (!ev_default_loop_ptr)
1717 { 3250 {
1718#if EV_MULTIPLICITY 3251#if EV_MULTIPLICITY
1719 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3252 EV_P = ev_default_loop_ptr = &default_loop_struct;
1720#else 3253#else
1721 ev_default_loop_ptr = 1; 3254 ev_default_loop_ptr = 1;
1722#endif 3255#endif
1723 3256
1724 loop_init (EV_A_ flags); 3257 loop_init (EV_A_ flags);
1725 3258
1726 if (ev_backend (EV_A)) 3259 if (ev_backend (EV_A))
1727 { 3260 {
1728#ifndef _WIN32 3261#if EV_CHILD_ENABLE
1729 ev_signal_init (&childev, childcb, SIGCHLD); 3262 ev_signal_init (&childev, childcb, SIGCHLD);
1730 ev_set_priority (&childev, EV_MAXPRI); 3263 ev_set_priority (&childev, EV_MAXPRI);
1731 ev_signal_start (EV_A_ &childev); 3264 ev_signal_start (EV_A_ &childev);
1732 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3265 ev_unref (EV_A); /* child watcher should not keep loop alive */
1733#endif 3266#endif
… …
1738 3271
1739 return ev_default_loop_ptr; 3272 return ev_default_loop_ptr;
1740} 3273}
1741 3274
1742void 3275void
1743ev_default_destroy (void) 3276ev_loop_fork (EV_P) EV_THROW
1744{ 3277{
1745#if EV_MULTIPLICITY 3278 postfork = 1;
1746 struct ev_loop *loop = ev_default_loop_ptr;
1747#endif
1748
1749 ev_default_loop_ptr = 0;
1750
1751#ifndef _WIN32
1752 ev_ref (EV_A); /* child watcher */
1753 ev_signal_stop (EV_A_ &childev);
1754#endif
1755
1756 loop_destroy (EV_A);
1757}
1758
1759void
1760ev_default_fork (void)
1761{
1762#if EV_MULTIPLICITY
1763 struct ev_loop *loop = ev_default_loop_ptr;
1764#endif
1765
1766 postfork = 1; /* must be in line with ev_loop_fork */
1767} 3279}
1768 3280
1769/*****************************************************************************/ 3281/*****************************************************************************/
1770 3282
1771void 3283void
1772ev_invoke (EV_P_ void *w, int revents) 3284ev_invoke (EV_P_ void *w, int revents)
1773{ 3285{
1774 EV_CB_INVOKE ((W)w, revents); 3286 EV_CB_INVOKE ((W)w, revents);
1775} 3287}
1776 3288
1777inline_speed void 3289unsigned int
1778call_pending (EV_P) 3290ev_pending_count (EV_P) EV_THROW
1779{ 3291{
1780 int pri; 3292 int pri;
3293 unsigned int count = 0;
1781 3294
1782 for (pri = NUMPRI; pri--; ) 3295 for (pri = NUMPRI; pri--; )
3296 count += pendingcnt [pri];
3297
3298 return count;
3299}
3300
3301noinline
3302void
3303ev_invoke_pending (EV_P)
3304{
3305 pendingpri = NUMPRI;
3306
3307 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3308 {
3309 --pendingpri;
3310
1783 while (pendingcnt [pri]) 3311 while (pendingcnt [pendingpri])
1784 { 3312 {
1785 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3313 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1786 3314
1787 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1788 /* ^ this is no longer true, as pending_w could be here */
1789
1790 p->w->pending = 0; 3315 p->w->pending = 0;
1791 EV_CB_INVOKE (p->w, p->events); 3316 EV_CB_INVOKE (p->w, p->events);
1792 EV_FREQUENT_CHECK; 3317 EV_FREQUENT_CHECK;
1793 } 3318 }
3319 }
1794} 3320}
1795 3321
1796#if EV_IDLE_ENABLE 3322#if EV_IDLE_ENABLE
1797/* make idle watchers pending. this handles the "call-idle */ 3323/* make idle watchers pending. this handles the "call-idle */
1798/* only when higher priorities are idle" logic */ 3324/* only when higher priorities are idle" logic */
… …
1850 EV_FREQUENT_CHECK; 3376 EV_FREQUENT_CHECK;
1851 feed_reverse (EV_A_ (W)w); 3377 feed_reverse (EV_A_ (W)w);
1852 } 3378 }
1853 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3379 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1854 3380
1855 feed_reverse_done (EV_A_ EV_TIMEOUT); 3381 feed_reverse_done (EV_A_ EV_TIMER);
1856 } 3382 }
1857} 3383}
1858 3384
1859#if EV_PERIODIC_ENABLE 3385#if EV_PERIODIC_ENABLE
3386
3387noinline
3388static void
3389periodic_recalc (EV_P_ ev_periodic *w)
3390{
3391 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3392 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3393
3394 /* the above almost always errs on the low side */
3395 while (at <= ev_rt_now)
3396 {
3397 ev_tstamp nat = at + w->interval;
3398
3399 /* when resolution fails us, we use ev_rt_now */
3400 if (expect_false (nat == at))
3401 {
3402 at = ev_rt_now;
3403 break;
3404 }
3405
3406 at = nat;
3407 }
3408
3409 ev_at (w) = at;
3410}
3411
1860/* make periodics pending */ 3412/* make periodics pending */
1861inline_size void 3413inline_size void
1862periodics_reify (EV_P) 3414periodics_reify (EV_P)
1863{ 3415{
1864 EV_FREQUENT_CHECK; 3416 EV_FREQUENT_CHECK;
1865 3417
1866 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3418 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1867 { 3419 {
1868 int feed_count = 0;
1869
1870 do 3420 do
1871 { 3421 {
1872 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3422 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1873 3423
1874 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3424 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1883 ANHE_at_cache (periodics [HEAP0]); 3433 ANHE_at_cache (periodics [HEAP0]);
1884 downheap (periodics, periodiccnt, HEAP0); 3434 downheap (periodics, periodiccnt, HEAP0);
1885 } 3435 }
1886 else if (w->interval) 3436 else if (w->interval)
1887 { 3437 {
1888 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3438 periodic_recalc (EV_A_ w);
1889 /* if next trigger time is not sufficiently in the future, put it there */
1890 /* this might happen because of floating point inexactness */
1891 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1892 {
1893 ev_at (w) += w->interval;
1894
1895 /* if interval is unreasonably low we might still have a time in the past */
1896 /* so correct this. this will make the periodic very inexact, but the user */
1897 /* has effectively asked to get triggered more often than possible */
1898 if (ev_at (w) < ev_rt_now)
1899 ev_at (w) = ev_rt_now;
1900 }
1901
1902 ANHE_at_cache (periodics [HEAP0]); 3439 ANHE_at_cache (periodics [HEAP0]);
1903 downheap (periodics, periodiccnt, HEAP0); 3440 downheap (periodics, periodiccnt, HEAP0);
1904 } 3441 }
1905 else 3442 else
1906 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3443 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1913 feed_reverse_done (EV_A_ EV_PERIODIC); 3450 feed_reverse_done (EV_A_ EV_PERIODIC);
1914 } 3451 }
1915} 3452}
1916 3453
1917/* simply recalculate all periodics */ 3454/* simply recalculate all periodics */
1918/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3455/* TODO: maybe ensure that at least one event happens when jumping forward? */
1919static void noinline 3456noinline ecb_cold
3457static void
1920periodics_reschedule (EV_P) 3458periodics_reschedule (EV_P)
1921{ 3459{
1922 int i; 3460 int i;
1923 3461
1924 /* adjust periodics after time jump */ 3462 /* adjust periodics after time jump */
… …
1927 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3465 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1928 3466
1929 if (w->reschedule_cb) 3467 if (w->reschedule_cb)
1930 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3468 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1931 else if (w->interval) 3469 else if (w->interval)
1932 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3470 periodic_recalc (EV_A_ w);
1933 3471
1934 ANHE_at_cache (periodics [i]); 3472 ANHE_at_cache (periodics [i]);
1935 } 3473 }
1936 3474
1937 reheap (periodics, periodiccnt); 3475 reheap (periodics, periodiccnt);
1938} 3476}
1939#endif 3477#endif
1940 3478
1941/* adjust all timers by a given offset */ 3479/* adjust all timers by a given offset */
1942static void noinline 3480noinline ecb_cold
3481static void
1943timers_reschedule (EV_P_ ev_tstamp adjust) 3482timers_reschedule (EV_P_ ev_tstamp adjust)
1944{ 3483{
1945 int i; 3484 int i;
1946 3485
1947 for (i = 0; i < timercnt; ++i) 3486 for (i = 0; i < timercnt; ++i)
… …
1951 ANHE_at_cache (*he); 3490 ANHE_at_cache (*he);
1952 } 3491 }
1953} 3492}
1954 3493
1955/* fetch new monotonic and realtime times from the kernel */ 3494/* fetch new monotonic and realtime times from the kernel */
1956/* also detetc if there was a timejump, and act accordingly */ 3495/* also detect if there was a timejump, and act accordingly */
1957inline_speed void 3496inline_speed void
1958time_update (EV_P_ ev_tstamp max_block) 3497time_update (EV_P_ ev_tstamp max_block)
1959{ 3498{
1960#if EV_USE_MONOTONIC 3499#if EV_USE_MONOTONIC
1961 if (expect_true (have_monotonic)) 3500 if (expect_true (have_monotonic))
… …
1984 * doesn't hurt either as we only do this on time-jumps or 3523 * doesn't hurt either as we only do this on time-jumps or
1985 * in the unlikely event of having been preempted here. 3524 * in the unlikely event of having been preempted here.
1986 */ 3525 */
1987 for (i = 4; --i; ) 3526 for (i = 4; --i; )
1988 { 3527 {
3528 ev_tstamp diff;
1989 rtmn_diff = ev_rt_now - mn_now; 3529 rtmn_diff = ev_rt_now - mn_now;
1990 3530
3531 diff = odiff - rtmn_diff;
3532
1991 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3533 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1992 return; /* all is well */ 3534 return; /* all is well */
1993 3535
1994 ev_rt_now = ev_time (); 3536 ev_rt_now = ev_time ();
1995 mn_now = get_clock (); 3537 mn_now = get_clock ();
1996 now_floor = mn_now; 3538 now_floor = mn_now;
… …
2018 3560
2019 mn_now = ev_rt_now; 3561 mn_now = ev_rt_now;
2020 } 3562 }
2021} 3563}
2022 3564
2023static int loop_done; 3565int
2024
2025void
2026ev_loop (EV_P_ int flags) 3566ev_run (EV_P_ int flags)
2027{ 3567{
3568#if EV_FEATURE_API
3569 ++loop_depth;
3570#endif
3571
3572 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3573
2028 loop_done = EVUNLOOP_CANCEL; 3574 loop_done = EVBREAK_CANCEL;
2029 3575
2030 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3576 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2031 3577
2032 do 3578 do
2033 { 3579 {
2034#if EV_VERIFY >= 2 3580#if EV_VERIFY >= 2
2035 ev_loop_verify (EV_A); 3581 ev_verify (EV_A);
2036#endif 3582#endif
2037 3583
2038#ifndef _WIN32 3584#ifndef _WIN32
2039 if (expect_false (curpid)) /* penalise the forking check even more */ 3585 if (expect_false (curpid)) /* penalise the forking check even more */
2040 if (expect_false (getpid () != curpid)) 3586 if (expect_false (getpid () != curpid))
… …
2048 /* we might have forked, so queue fork handlers */ 3594 /* we might have forked, so queue fork handlers */
2049 if (expect_false (postfork)) 3595 if (expect_false (postfork))
2050 if (forkcnt) 3596 if (forkcnt)
2051 { 3597 {
2052 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3598 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2053 call_pending (EV_A); 3599 EV_INVOKE_PENDING;
2054 } 3600 }
2055#endif 3601#endif
2056 3602
3603#if EV_PREPARE_ENABLE
2057 /* queue prepare watchers (and execute them) */ 3604 /* queue prepare watchers (and execute them) */
2058 if (expect_false (preparecnt)) 3605 if (expect_false (preparecnt))
2059 { 3606 {
2060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3607 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2061 call_pending (EV_A); 3608 EV_INVOKE_PENDING;
2062 } 3609 }
3610#endif
3611
3612 if (expect_false (loop_done))
3613 break;
2063 3614
2064 /* we might have forked, so reify kernel state if necessary */ 3615 /* we might have forked, so reify kernel state if necessary */
2065 if (expect_false (postfork)) 3616 if (expect_false (postfork))
2066 loop_fork (EV_A); 3617 loop_fork (EV_A);
2067 3618
… …
2071 /* calculate blocking time */ 3622 /* calculate blocking time */
2072 { 3623 {
2073 ev_tstamp waittime = 0.; 3624 ev_tstamp waittime = 0.;
2074 ev_tstamp sleeptime = 0.; 3625 ev_tstamp sleeptime = 0.;
2075 3626
3627 /* remember old timestamp for io_blocktime calculation */
3628 ev_tstamp prev_mn_now = mn_now;
3629
3630 /* update time to cancel out callback processing overhead */
3631 time_update (EV_A_ 1e100);
3632
3633 /* from now on, we want a pipe-wake-up */
3634 pipe_write_wanted = 1;
3635
3636 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3637
2076 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3638 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2077 { 3639 {
2078 /* update time to cancel out callback processing overhead */
2079 time_update (EV_A_ 1e100);
2080
2081 waittime = MAX_BLOCKTIME; 3640 waittime = MAX_BLOCKTIME;
2082 3641
2083 if (timercnt) 3642 if (timercnt)
2084 { 3643 {
2085 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3644 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2086 if (waittime > to) waittime = to; 3645 if (waittime > to) waittime = to;
2087 } 3646 }
2088 3647
2089#if EV_PERIODIC_ENABLE 3648#if EV_PERIODIC_ENABLE
2090 if (periodiccnt) 3649 if (periodiccnt)
2091 { 3650 {
2092 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3651 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2093 if (waittime > to) waittime = to; 3652 if (waittime > to) waittime = to;
2094 } 3653 }
2095#endif 3654#endif
2096 3655
3656 /* don't let timeouts decrease the waittime below timeout_blocktime */
2097 if (expect_false (waittime < timeout_blocktime)) 3657 if (expect_false (waittime < timeout_blocktime))
2098 waittime = timeout_blocktime; 3658 waittime = timeout_blocktime;
2099 3659
2100 sleeptime = waittime - backend_fudge; 3660 /* at this point, we NEED to wait, so we have to ensure */
3661 /* to pass a minimum nonzero value to the backend */
3662 if (expect_false (waittime < backend_mintime))
3663 waittime = backend_mintime;
2101 3664
3665 /* extra check because io_blocktime is commonly 0 */
2102 if (expect_true (sleeptime > io_blocktime)) 3666 if (expect_false (io_blocktime))
2103 sleeptime = io_blocktime;
2104
2105 if (sleeptime)
2106 { 3667 {
3668 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3669
3670 if (sleeptime > waittime - backend_mintime)
3671 sleeptime = waittime - backend_mintime;
3672
3673 if (expect_true (sleeptime > 0.))
3674 {
2107 ev_sleep (sleeptime); 3675 ev_sleep (sleeptime);
2108 waittime -= sleeptime; 3676 waittime -= sleeptime;
3677 }
2109 } 3678 }
2110 } 3679 }
2111 3680
3681#if EV_FEATURE_API
2112 ++loop_count; 3682 ++loop_count;
3683#endif
3684 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2113 backend_poll (EV_A_ waittime); 3685 backend_poll (EV_A_ waittime);
3686 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3687
3688 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3689
3690 ECB_MEMORY_FENCE_ACQUIRE;
3691 if (pipe_write_skipped)
3692 {
3693 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3694 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3695 }
3696
2114 3697
2115 /* update ev_rt_now, do magic */ 3698 /* update ev_rt_now, do magic */
2116 time_update (EV_A_ waittime + sleeptime); 3699 time_update (EV_A_ waittime + sleeptime);
2117 } 3700 }
2118 3701
… …
2125#if EV_IDLE_ENABLE 3708#if EV_IDLE_ENABLE
2126 /* queue idle watchers unless other events are pending */ 3709 /* queue idle watchers unless other events are pending */
2127 idle_reify (EV_A); 3710 idle_reify (EV_A);
2128#endif 3711#endif
2129 3712
3713#if EV_CHECK_ENABLE
2130 /* queue check watchers, to be executed first */ 3714 /* queue check watchers, to be executed first */
2131 if (expect_false (checkcnt)) 3715 if (expect_false (checkcnt))
2132 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3716 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3717#endif
2133 3718
2134 call_pending (EV_A); 3719 EV_INVOKE_PENDING;
2135 } 3720 }
2136 while (expect_true ( 3721 while (expect_true (
2137 activecnt 3722 activecnt
2138 && !loop_done 3723 && !loop_done
2139 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3724 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2140 )); 3725 ));
2141 3726
2142 if (loop_done == EVUNLOOP_ONE) 3727 if (loop_done == EVBREAK_ONE)
2143 loop_done = EVUNLOOP_CANCEL; 3728 loop_done = EVBREAK_CANCEL;
2144}
2145 3729
3730#if EV_FEATURE_API
3731 --loop_depth;
3732#endif
3733
3734 return activecnt;
3735}
3736
2146void 3737void
2147ev_unloop (EV_P_ int how) 3738ev_break (EV_P_ int how) EV_THROW
2148{ 3739{
2149 loop_done = how; 3740 loop_done = how;
2150} 3741}
2151 3742
2152void 3743void
2153ev_ref (EV_P) 3744ev_ref (EV_P) EV_THROW
2154{ 3745{
2155 ++activecnt; 3746 ++activecnt;
2156} 3747}
2157 3748
2158void 3749void
2159ev_unref (EV_P) 3750ev_unref (EV_P) EV_THROW
2160{ 3751{
2161 --activecnt; 3752 --activecnt;
2162} 3753}
2163 3754
2164void 3755void
2165ev_now_update (EV_P) 3756ev_now_update (EV_P) EV_THROW
2166{ 3757{
2167 time_update (EV_A_ 1e100); 3758 time_update (EV_A_ 1e100);
2168} 3759}
2169 3760
2170void 3761void
2171ev_suspend (EV_P) 3762ev_suspend (EV_P) EV_THROW
2172{ 3763{
2173 ev_now_update (EV_A); 3764 ev_now_update (EV_A);
2174} 3765}
2175 3766
2176void 3767void
2177ev_resume (EV_P) 3768ev_resume (EV_P) EV_THROW
2178{ 3769{
2179 ev_tstamp mn_prev = mn_now; 3770 ev_tstamp mn_prev = mn_now;
2180 3771
2181 ev_now_update (EV_A); 3772 ev_now_update (EV_A);
2182 timers_reschedule (EV_A_ mn_now - mn_prev); 3773 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2199inline_size void 3790inline_size void
2200wlist_del (WL *head, WL elem) 3791wlist_del (WL *head, WL elem)
2201{ 3792{
2202 while (*head) 3793 while (*head)
2203 { 3794 {
2204 if (*head == elem) 3795 if (expect_true (*head == elem))
2205 { 3796 {
2206 *head = elem->next; 3797 *head = elem->next;
2207 return; 3798 break;
2208 } 3799 }
2209 3800
2210 head = &(*head)->next; 3801 head = &(*head)->next;
2211 } 3802 }
2212} 3803}
… …
2221 w->pending = 0; 3812 w->pending = 0;
2222 } 3813 }
2223} 3814}
2224 3815
2225int 3816int
2226ev_clear_pending (EV_P_ void *w) 3817ev_clear_pending (EV_P_ void *w) EV_THROW
2227{ 3818{
2228 W w_ = (W)w; 3819 W w_ = (W)w;
2229 int pending = w_->pending; 3820 int pending = w_->pending;
2230 3821
2231 if (expect_true (pending)) 3822 if (expect_true (pending))
… …
2240} 3831}
2241 3832
2242inline_size void 3833inline_size void
2243pri_adjust (EV_P_ W w) 3834pri_adjust (EV_P_ W w)
2244{ 3835{
2245 int pri = w->priority; 3836 int pri = ev_priority (w);
2246 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3837 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2247 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3838 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2248 w->priority = pri; 3839 ev_set_priority (w, pri);
2249} 3840}
2250 3841
2251inline_speed void 3842inline_speed void
2252ev_start (EV_P_ W w, int active) 3843ev_start (EV_P_ W w, int active)
2253{ 3844{
… …
2263 w->active = 0; 3854 w->active = 0;
2264} 3855}
2265 3856
2266/*****************************************************************************/ 3857/*****************************************************************************/
2267 3858
2268void noinline 3859noinline
3860void
2269ev_io_start (EV_P_ ev_io *w) 3861ev_io_start (EV_P_ ev_io *w) EV_THROW
2270{ 3862{
2271 int fd = w->fd; 3863 int fd = w->fd;
2272 3864
2273 if (expect_false (ev_is_active (w))) 3865 if (expect_false (ev_is_active (w)))
2274 return; 3866 return;
2275 3867
2276 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3868 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2277 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3869 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2278 3870
2279 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
2280 3872
2281 ev_start (EV_A_ (W)w, 1); 3873 ev_start (EV_A_ (W)w, 1);
2282 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3874 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2283 wlist_add (&anfds[fd].head, (WL)w); 3875 wlist_add (&anfds[fd].head, (WL)w);
2284 3876
3877 /* common bug, apparently */
3878 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3879
2285 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3880 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2286 w->events &= ~EV__IOFDSET; 3881 w->events &= ~EV__IOFDSET;
2287 3882
2288 EV_FREQUENT_CHECK; 3883 EV_FREQUENT_CHECK;
2289} 3884}
2290 3885
2291void noinline 3886noinline
3887void
2292ev_io_stop (EV_P_ ev_io *w) 3888ev_io_stop (EV_P_ ev_io *w) EV_THROW
2293{ 3889{
2294 clear_pending (EV_A_ (W)w); 3890 clear_pending (EV_A_ (W)w);
2295 if (expect_false (!ev_is_active (w))) 3891 if (expect_false (!ev_is_active (w)))
2296 return; 3892 return;
2297 3893
… …
2300 EV_FREQUENT_CHECK; 3896 EV_FREQUENT_CHECK;
2301 3897
2302 wlist_del (&anfds[w->fd].head, (WL)w); 3898 wlist_del (&anfds[w->fd].head, (WL)w);
2303 ev_stop (EV_A_ (W)w); 3899 ev_stop (EV_A_ (W)w);
2304 3900
2305 fd_change (EV_A_ w->fd, 1); 3901 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2306 3902
2307 EV_FREQUENT_CHECK; 3903 EV_FREQUENT_CHECK;
2308} 3904}
2309 3905
2310void noinline 3906noinline
3907void
2311ev_timer_start (EV_P_ ev_timer *w) 3908ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2312{ 3909{
2313 if (expect_false (ev_is_active (w))) 3910 if (expect_false (ev_is_active (w)))
2314 return; 3911 return;
2315 3912
2316 ev_at (w) += mn_now; 3913 ev_at (w) += mn_now;
… …
2329 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
2330 3927
2331 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3928 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2332} 3929}
2333 3930
2334void noinline 3931noinline
3932void
2335ev_timer_stop (EV_P_ ev_timer *w) 3933ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2336{ 3934{
2337 clear_pending (EV_A_ (W)w); 3935 clear_pending (EV_A_ (W)w);
2338 if (expect_false (!ev_is_active (w))) 3936 if (expect_false (!ev_is_active (w)))
2339 return; 3937 return;
2340 3938
… …
2352 timers [active] = timers [timercnt + HEAP0]; 3950 timers [active] = timers [timercnt + HEAP0];
2353 adjustheap (timers, timercnt, active); 3951 adjustheap (timers, timercnt, active);
2354 } 3952 }
2355 } 3953 }
2356 3954
2357 EV_FREQUENT_CHECK;
2358
2359 ev_at (w) -= mn_now; 3955 ev_at (w) -= mn_now;
2360 3956
2361 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
2362}
2363 3958
3959 EV_FREQUENT_CHECK;
3960}
3961
2364void noinline 3962noinline
3963void
2365ev_timer_again (EV_P_ ev_timer *w) 3964ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2366{ 3965{
2367 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3967
3968 clear_pending (EV_A_ (W)w);
2368 3969
2369 if (ev_is_active (w)) 3970 if (ev_is_active (w))
2370 { 3971 {
2371 if (w->repeat) 3972 if (w->repeat)
2372 { 3973 {
… …
2384 } 3985 }
2385 3986
2386 EV_FREQUENT_CHECK; 3987 EV_FREQUENT_CHECK;
2387} 3988}
2388 3989
3990ev_tstamp
3991ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3992{
3993 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3994}
3995
2389#if EV_PERIODIC_ENABLE 3996#if EV_PERIODIC_ENABLE
2390void noinline 3997noinline
3998void
2391ev_periodic_start (EV_P_ ev_periodic *w) 3999ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2392{ 4000{
2393 if (expect_false (ev_is_active (w))) 4001 if (expect_false (ev_is_active (w)))
2394 return; 4002 return;
2395 4003
2396 if (w->reschedule_cb) 4004 if (w->reschedule_cb)
2397 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4005 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2398 else if (w->interval) 4006 else if (w->interval)
2399 { 4007 {
2400 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4008 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2401 /* this formula differs from the one in periodic_reify because we do not always round up */ 4009 periodic_recalc (EV_A_ w);
2402 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2403 } 4010 }
2404 else 4011 else
2405 ev_at (w) = w->offset; 4012 ev_at (w) = w->offset;
2406 4013
2407 EV_FREQUENT_CHECK; 4014 EV_FREQUENT_CHECK;
… …
2416 EV_FREQUENT_CHECK; 4023 EV_FREQUENT_CHECK;
2417 4024
2418 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4025 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2419} 4026}
2420 4027
2421void noinline 4028noinline
4029void
2422ev_periodic_stop (EV_P_ ev_periodic *w) 4030ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2423{ 4031{
2424 clear_pending (EV_A_ (W)w); 4032 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w))) 4033 if (expect_false (!ev_is_active (w)))
2426 return; 4034 return;
2427 4035
… …
2439 periodics [active] = periodics [periodiccnt + HEAP0]; 4047 periodics [active] = periodics [periodiccnt + HEAP0];
2440 adjustheap (periodics, periodiccnt, active); 4048 adjustheap (periodics, periodiccnt, active);
2441 } 4049 }
2442 } 4050 }
2443 4051
2444 EV_FREQUENT_CHECK;
2445
2446 ev_stop (EV_A_ (W)w); 4052 ev_stop (EV_A_ (W)w);
2447}
2448 4053
4054 EV_FREQUENT_CHECK;
4055}
4056
2449void noinline 4057noinline
4058void
2450ev_periodic_again (EV_P_ ev_periodic *w) 4059ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2451{ 4060{
2452 /* TODO: use adjustheap and recalculation */ 4061 /* TODO: use adjustheap and recalculation */
2453 ev_periodic_stop (EV_A_ w); 4062 ev_periodic_stop (EV_A_ w);
2454 ev_periodic_start (EV_A_ w); 4063 ev_periodic_start (EV_A_ w);
2455} 4064}
… …
2457 4066
2458#ifndef SA_RESTART 4067#ifndef SA_RESTART
2459# define SA_RESTART 0 4068# define SA_RESTART 0
2460#endif 4069#endif
2461 4070
4071#if EV_SIGNAL_ENABLE
4072
2462void noinline 4073noinline
4074void
2463ev_signal_start (EV_P_ ev_signal *w) 4075ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2464{ 4076{
2465#if EV_MULTIPLICITY
2466 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2467#endif
2468 if (expect_false (ev_is_active (w))) 4077 if (expect_false (ev_is_active (w)))
2469 return; 4078 return;
2470 4079
2471 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4080 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2472 4081
2473 evpipe_init (EV_A); 4082#if EV_MULTIPLICITY
4083 assert (("libev: a signal must not be attached to two different loops",
4084 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2474 4085
2475 EV_FREQUENT_CHECK; 4086 signals [w->signum - 1].loop = EV_A;
4087 ECB_MEMORY_FENCE_RELEASE;
4088#endif
2476 4089
4090 EV_FREQUENT_CHECK;
4091
4092#if EV_USE_SIGNALFD
4093 if (sigfd == -2)
2477 { 4094 {
2478#ifndef _WIN32 4095 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2479 sigset_t full, prev; 4096 if (sigfd < 0 && errno == EINVAL)
2480 sigfillset (&full); 4097 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2481 sigprocmask (SIG_SETMASK, &full, &prev);
2482#endif
2483 4098
2484 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4099 if (sigfd >= 0)
4100 {
4101 fd_intern (sigfd); /* doing it twice will not hurt */
2485 4102
2486#ifndef _WIN32 4103 sigemptyset (&sigfd_set);
2487 sigprocmask (SIG_SETMASK, &prev, 0); 4104
2488#endif 4105 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4106 ev_set_priority (&sigfd_w, EV_MAXPRI);
4107 ev_io_start (EV_A_ &sigfd_w);
4108 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4109 }
2489 } 4110 }
4111
4112 if (sigfd >= 0)
4113 {
4114 /* TODO: check .head */
4115 sigaddset (&sigfd_set, w->signum);
4116 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4117
4118 signalfd (sigfd, &sigfd_set, 0);
4119 }
4120#endif
2490 4121
2491 ev_start (EV_A_ (W)w, 1); 4122 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&signals [w->signum - 1].head, (WL)w); 4123 wlist_add (&signals [w->signum - 1].head, (WL)w);
2493 4124
2494 if (!((WL)w)->next) 4125 if (!((WL)w)->next)
4126# if EV_USE_SIGNALFD
4127 if (sigfd < 0) /*TODO*/
4128# endif
2495 { 4129 {
2496#if _WIN32 4130# ifdef _WIN32
4131 evpipe_init (EV_A);
4132
2497 signal (w->signum, ev_sighandler); 4133 signal (w->signum, ev_sighandler);
2498#else 4134# else
2499 struct sigaction sa; 4135 struct sigaction sa;
4136
4137 evpipe_init (EV_A);
4138
2500 sa.sa_handler = ev_sighandler; 4139 sa.sa_handler = ev_sighandler;
2501 sigfillset (&sa.sa_mask); 4140 sigfillset (&sa.sa_mask);
2502 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4141 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2503 sigaction (w->signum, &sa, 0); 4142 sigaction (w->signum, &sa, 0);
4143
4144 if (origflags & EVFLAG_NOSIGMASK)
4145 {
4146 sigemptyset (&sa.sa_mask);
4147 sigaddset (&sa.sa_mask, w->signum);
4148 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4149 }
2504#endif 4150#endif
2505 } 4151 }
2506 4152
2507 EV_FREQUENT_CHECK; 4153 EV_FREQUENT_CHECK;
2508} 4154}
2509 4155
2510void noinline 4156noinline
4157void
2511ev_signal_stop (EV_P_ ev_signal *w) 4158ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2512{ 4159{
2513 clear_pending (EV_A_ (W)w); 4160 clear_pending (EV_A_ (W)w);
2514 if (expect_false (!ev_is_active (w))) 4161 if (expect_false (!ev_is_active (w)))
2515 return; 4162 return;
2516 4163
… …
2518 4165
2519 wlist_del (&signals [w->signum - 1].head, (WL)w); 4166 wlist_del (&signals [w->signum - 1].head, (WL)w);
2520 ev_stop (EV_A_ (W)w); 4167 ev_stop (EV_A_ (W)w);
2521 4168
2522 if (!signals [w->signum - 1].head) 4169 if (!signals [w->signum - 1].head)
4170 {
4171#if EV_MULTIPLICITY
4172 signals [w->signum - 1].loop = 0; /* unattach from signal */
4173#endif
4174#if EV_USE_SIGNALFD
4175 if (sigfd >= 0)
4176 {
4177 sigset_t ss;
4178
4179 sigemptyset (&ss);
4180 sigaddset (&ss, w->signum);
4181 sigdelset (&sigfd_set, w->signum);
4182
4183 signalfd (sigfd, &sigfd_set, 0);
4184 sigprocmask (SIG_UNBLOCK, &ss, 0);
4185 }
4186 else
4187#endif
2523 signal (w->signum, SIG_DFL); 4188 signal (w->signum, SIG_DFL);
4189 }
2524 4190
2525 EV_FREQUENT_CHECK; 4191 EV_FREQUENT_CHECK;
2526} 4192}
2527 4193
4194#endif
4195
4196#if EV_CHILD_ENABLE
4197
2528void 4198void
2529ev_child_start (EV_P_ ev_child *w) 4199ev_child_start (EV_P_ ev_child *w) EV_THROW
2530{ 4200{
2531#if EV_MULTIPLICITY 4201#if EV_MULTIPLICITY
2532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4202 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2533#endif 4203#endif
2534 if (expect_false (ev_is_active (w))) 4204 if (expect_false (ev_is_active (w)))
2535 return; 4205 return;
2536 4206
2537 EV_FREQUENT_CHECK; 4207 EV_FREQUENT_CHECK;
2538 4208
2539 ev_start (EV_A_ (W)w, 1); 4209 ev_start (EV_A_ (W)w, 1);
2540 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4210 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2541 4211
2542 EV_FREQUENT_CHECK; 4212 EV_FREQUENT_CHECK;
2543} 4213}
2544 4214
2545void 4215void
2546ev_child_stop (EV_P_ ev_child *w) 4216ev_child_stop (EV_P_ ev_child *w) EV_THROW
2547{ 4217{
2548 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2549 if (expect_false (!ev_is_active (w))) 4219 if (expect_false (!ev_is_active (w)))
2550 return; 4220 return;
2551 4221
2552 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2553 4223
2554 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4224 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2555 ev_stop (EV_A_ (W)w); 4225 ev_stop (EV_A_ (W)w);
2556 4226
2557 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
2558} 4228}
4229
4230#endif
2559 4231
2560#if EV_STAT_ENABLE 4232#if EV_STAT_ENABLE
2561 4233
2562# ifdef _WIN32 4234# ifdef _WIN32
2563# undef lstat 4235# undef lstat
… …
2566 4238
2567#define DEF_STAT_INTERVAL 5.0074891 4239#define DEF_STAT_INTERVAL 5.0074891
2568#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4240#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2569#define MIN_STAT_INTERVAL 0.1074891 4241#define MIN_STAT_INTERVAL 0.1074891
2570 4242
2571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4243noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2572 4244
2573#if EV_USE_INOTIFY 4245#if EV_USE_INOTIFY
2574# define EV_INOTIFY_BUFSIZE 8192
2575 4246
2576static void noinline 4247/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4248# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4249
4250noinline
4251static void
2577infy_add (EV_P_ ev_stat *w) 4252infy_add (EV_P_ ev_stat *w)
2578{ 4253{
2579 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); 4254 w->wd = inotify_add_watch (fs_fd, w->path,
4255 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4256 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4257 | IN_DONT_FOLLOW | IN_MASK_ADD);
2580 4258
2581 if (w->wd < 0) 4259 if (w->wd >= 0)
4260 {
4261 struct statfs sfs;
4262
4263 /* now local changes will be tracked by inotify, but remote changes won't */
4264 /* unless the filesystem is known to be local, we therefore still poll */
4265 /* also do poll on <2.6.25, but with normal frequency */
4266
4267 if (!fs_2625)
4268 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4269 else if (!statfs (w->path, &sfs)
4270 && (sfs.f_type == 0x1373 /* devfs */
4271 || sfs.f_type == 0x4006 /* fat */
4272 || sfs.f_type == 0x4d44 /* msdos */
4273 || sfs.f_type == 0xEF53 /* ext2/3 */
4274 || sfs.f_type == 0x72b6 /* jffs2 */
4275 || sfs.f_type == 0x858458f6 /* ramfs */
4276 || sfs.f_type == 0x5346544e /* ntfs */
4277 || sfs.f_type == 0x3153464a /* jfs */
4278 || sfs.f_type == 0x9123683e /* btrfs */
4279 || sfs.f_type == 0x52654973 /* reiser3 */
4280 || sfs.f_type == 0x01021994 /* tmpfs */
4281 || sfs.f_type == 0x58465342 /* xfs */))
4282 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4283 else
4284 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2582 { 4285 }
4286 else
4287 {
4288 /* can't use inotify, continue to stat */
2583 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4289 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2584 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2585 4290
2586 /* monitor some parent directory for speedup hints */ 4291 /* if path is not there, monitor some parent directory for speedup hints */
2587 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4292 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2588 /* but an efficiency issue only */ 4293 /* but an efficiency issue only */
2589 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4294 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2590 { 4295 {
2591 char path [4096]; 4296 char path [4096];
… …
2601 if (!pend || pend == path) 4306 if (!pend || pend == path)
2602 break; 4307 break;
2603 4308
2604 *pend = 0; 4309 *pend = 0;
2605 w->wd = inotify_add_watch (fs_fd, path, mask); 4310 w->wd = inotify_add_watch (fs_fd, path, mask);
2606 } 4311 }
2607 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4312 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2608 } 4313 }
2609 } 4314 }
2610 4315
2611 if (w->wd >= 0) 4316 if (w->wd >= 0)
2612 {
2613 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4317 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2614 4318
2615 /* now local changes will be tracked by inotify, but remote changes won't */ 4319 /* now re-arm timer, if required */
2616 /* unless the filesystem it known to be local, we therefore still poll */ 4320 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2617 /* also do poll on <2.6.25, but with normal frequency */
2618 struct statfs sfs;
2619
2620 if (fs_2625 && !statfs (w->path, &sfs))
2621 if (sfs.f_type == 0x1373 /* devfs */
2622 || sfs.f_type == 0xEF53 /* ext2/3 */
2623 || sfs.f_type == 0x3153464a /* jfs */
2624 || sfs.f_type == 0x52654973 /* reiser3 */
2625 || sfs.f_type == 0x01021994 /* tempfs */
2626 || sfs.f_type == 0x58465342 /* xfs */)
2627 return;
2628
2629 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2630 ev_timer_again (EV_A_ &w->timer); 4321 ev_timer_again (EV_A_ &w->timer);
2631 } 4322 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2632} 4323}
2633 4324
2634static void noinline 4325noinline
4326static void
2635infy_del (EV_P_ ev_stat *w) 4327infy_del (EV_P_ ev_stat *w)
2636{ 4328{
2637 int slot; 4329 int slot;
2638 int wd = w->wd; 4330 int wd = w->wd;
2639 4331
2640 if (wd < 0) 4332 if (wd < 0)
2641 return; 4333 return;
2642 4334
2643 w->wd = -2; 4335 w->wd = -2;
2644 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4336 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2645 wlist_del (&fs_hash [slot].head, (WL)w); 4337 wlist_del (&fs_hash [slot].head, (WL)w);
2646 4338
2647 /* remove this watcher, if others are watching it, they will rearm */ 4339 /* remove this watcher, if others are watching it, they will rearm */
2648 inotify_rm_watch (fs_fd, wd); 4340 inotify_rm_watch (fs_fd, wd);
2649} 4341}
2650 4342
2651static void noinline 4343noinline
4344static void
2652infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4345infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2653{ 4346{
2654 if (slot < 0) 4347 if (slot < 0)
2655 /* overflow, need to check for all hash slots */ 4348 /* overflow, need to check for all hash slots */
2656 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4349 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2657 infy_wd (EV_A_ slot, wd, ev); 4350 infy_wd (EV_A_ slot, wd, ev);
2658 else 4351 else
2659 { 4352 {
2660 WL w_; 4353 WL w_;
2661 4354
2662 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4355 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2663 { 4356 {
2664 ev_stat *w = (ev_stat *)w_; 4357 ev_stat *w = (ev_stat *)w_;
2665 w_ = w_->next; /* lets us remove this watcher and all before it */ 4358 w_ = w_->next; /* lets us remove this watcher and all before it */
2666 4359
2667 if (w->wd == wd || wd == -1) 4360 if (w->wd == wd || wd == -1)
2668 { 4361 {
2669 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4362 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2670 { 4363 {
2671 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4364 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2672 w->wd = -1; 4365 w->wd = -1;
2673 infy_add (EV_A_ w); /* re-add, no matter what */ 4366 infy_add (EV_A_ w); /* re-add, no matter what */
2674 } 4367 }
2675 4368
2676 stat_timer_cb (EV_A_ &w->timer, 0); 4369 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2681 4374
2682static void 4375static void
2683infy_cb (EV_P_ ev_io *w, int revents) 4376infy_cb (EV_P_ ev_io *w, int revents)
2684{ 4377{
2685 char buf [EV_INOTIFY_BUFSIZE]; 4378 char buf [EV_INOTIFY_BUFSIZE];
2686 struct inotify_event *ev = (struct inotify_event *)buf;
2687 int ofs; 4379 int ofs;
2688 int len = read (fs_fd, buf, sizeof (buf)); 4380 int len = read (fs_fd, buf, sizeof (buf));
2689 4381
2690 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4382 for (ofs = 0; ofs < len; )
4383 {
4384 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2691 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4385 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4386 ofs += sizeof (struct inotify_event) + ev->len;
4387 }
2692} 4388}
2693 4389
2694inline_size void 4390inline_size ecb_cold
4391void
2695check_2625 (EV_P) 4392ev_check_2625 (EV_P)
2696{ 4393{
2697 /* kernels < 2.6.25 are borked 4394 /* kernels < 2.6.25 are borked
2698 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4395 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2699 */ 4396 */
2700 struct utsname buf; 4397 if (ev_linux_version () < 0x020619)
2701 int major, minor, micro;
2702
2703 if (uname (&buf))
2704 return; 4398 return;
2705 4399
2706 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2707 return;
2708
2709 if (major < 2
2710 || (major == 2 && minor < 6)
2711 || (major == 2 && minor == 6 && micro < 25))
2712 return;
2713
2714 fs_2625 = 1; 4400 fs_2625 = 1;
4401}
4402
4403inline_size int
4404infy_newfd (void)
4405{
4406#if defined IN_CLOEXEC && defined IN_NONBLOCK
4407 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4408 if (fd >= 0)
4409 return fd;
4410#endif
4411 return inotify_init ();
2715} 4412}
2716 4413
2717inline_size void 4414inline_size void
2718infy_init (EV_P) 4415infy_init (EV_P)
2719{ 4416{
2720 if (fs_fd != -2) 4417 if (fs_fd != -2)
2721 return; 4418 return;
2722 4419
2723 fs_fd = -1; 4420 fs_fd = -1;
2724 4421
2725 check_2625 (EV_A); 4422 ev_check_2625 (EV_A);
2726 4423
2727 fs_fd = inotify_init (); 4424 fs_fd = infy_newfd ();
2728 4425
2729 if (fs_fd >= 0) 4426 if (fs_fd >= 0)
2730 { 4427 {
4428 fd_intern (fs_fd);
2731 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4429 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2732 ev_set_priority (&fs_w, EV_MAXPRI); 4430 ev_set_priority (&fs_w, EV_MAXPRI);
2733 ev_io_start (EV_A_ &fs_w); 4431 ev_io_start (EV_A_ &fs_w);
4432 ev_unref (EV_A);
2734 } 4433 }
2735} 4434}
2736 4435
2737inline_size void 4436inline_size void
2738infy_fork (EV_P) 4437infy_fork (EV_P)
… …
2740 int slot; 4439 int slot;
2741 4440
2742 if (fs_fd < 0) 4441 if (fs_fd < 0)
2743 return; 4442 return;
2744 4443
4444 ev_ref (EV_A);
4445 ev_io_stop (EV_A_ &fs_w);
2745 close (fs_fd); 4446 close (fs_fd);
2746 fs_fd = inotify_init (); 4447 fs_fd = infy_newfd ();
2747 4448
4449 if (fs_fd >= 0)
4450 {
4451 fd_intern (fs_fd);
4452 ev_io_set (&fs_w, fs_fd, EV_READ);
4453 ev_io_start (EV_A_ &fs_w);
4454 ev_unref (EV_A);
4455 }
4456
2748 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4457 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2749 { 4458 {
2750 WL w_ = fs_hash [slot].head; 4459 WL w_ = fs_hash [slot].head;
2751 fs_hash [slot].head = 0; 4460 fs_hash [slot].head = 0;
2752 4461
2753 while (w_) 4462 while (w_)
… …
2758 w->wd = -1; 4467 w->wd = -1;
2759 4468
2760 if (fs_fd >= 0) 4469 if (fs_fd >= 0)
2761 infy_add (EV_A_ w); /* re-add, no matter what */ 4470 infy_add (EV_A_ w); /* re-add, no matter what */
2762 else 4471 else
4472 {
4473 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4474 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2763 ev_timer_again (EV_A_ &w->timer); 4475 ev_timer_again (EV_A_ &w->timer);
4476 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4477 }
2764 } 4478 }
2765 } 4479 }
2766} 4480}
2767 4481
2768#endif 4482#endif
… …
2772#else 4486#else
2773# define EV_LSTAT(p,b) lstat (p, b) 4487# define EV_LSTAT(p,b) lstat (p, b)
2774#endif 4488#endif
2775 4489
2776void 4490void
2777ev_stat_stat (EV_P_ ev_stat *w) 4491ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2778{ 4492{
2779 if (lstat (w->path, &w->attr) < 0) 4493 if (lstat (w->path, &w->attr) < 0)
2780 w->attr.st_nlink = 0; 4494 w->attr.st_nlink = 0;
2781 else if (!w->attr.st_nlink) 4495 else if (!w->attr.st_nlink)
2782 w->attr.st_nlink = 1; 4496 w->attr.st_nlink = 1;
2783} 4497}
2784 4498
2785static void noinline 4499noinline
4500static void
2786stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4501stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2787{ 4502{
2788 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4503 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2789 4504
2790 /* we copy this here each the time so that */ 4505 ev_statdata prev = w->attr;
2791 /* prev has the old value when the callback gets invoked */
2792 w->prev = w->attr;
2793 ev_stat_stat (EV_A_ w); 4506 ev_stat_stat (EV_A_ w);
2794 4507
2795 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4508 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2796 if ( 4509 if (
2797 w->prev.st_dev != w->attr.st_dev 4510 prev.st_dev != w->attr.st_dev
2798 || w->prev.st_ino != w->attr.st_ino 4511 || prev.st_ino != w->attr.st_ino
2799 || w->prev.st_mode != w->attr.st_mode 4512 || prev.st_mode != w->attr.st_mode
2800 || w->prev.st_nlink != w->attr.st_nlink 4513 || prev.st_nlink != w->attr.st_nlink
2801 || w->prev.st_uid != w->attr.st_uid 4514 || prev.st_uid != w->attr.st_uid
2802 || w->prev.st_gid != w->attr.st_gid 4515 || prev.st_gid != w->attr.st_gid
2803 || w->prev.st_rdev != w->attr.st_rdev 4516 || prev.st_rdev != w->attr.st_rdev
2804 || w->prev.st_size != w->attr.st_size 4517 || prev.st_size != w->attr.st_size
2805 || w->prev.st_atime != w->attr.st_atime 4518 || prev.st_atime != w->attr.st_atime
2806 || w->prev.st_mtime != w->attr.st_mtime 4519 || prev.st_mtime != w->attr.st_mtime
2807 || w->prev.st_ctime != w->attr.st_ctime 4520 || prev.st_ctime != w->attr.st_ctime
2808 ) { 4521 ) {
4522 /* we only update w->prev on actual differences */
4523 /* in case we test more often than invoke the callback, */
4524 /* to ensure that prev is always different to attr */
4525 w->prev = prev;
4526
2809 #if EV_USE_INOTIFY 4527 #if EV_USE_INOTIFY
2810 if (fs_fd >= 0) 4528 if (fs_fd >= 0)
2811 { 4529 {
2812 infy_del (EV_A_ w); 4530 infy_del (EV_A_ w);
2813 infy_add (EV_A_ w); 4531 infy_add (EV_A_ w);
… …
2818 ev_feed_event (EV_A_ w, EV_STAT); 4536 ev_feed_event (EV_A_ w, EV_STAT);
2819 } 4537 }
2820} 4538}
2821 4539
2822void 4540void
2823ev_stat_start (EV_P_ ev_stat *w) 4541ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2824{ 4542{
2825 if (expect_false (ev_is_active (w))) 4543 if (expect_false (ev_is_active (w)))
2826 return; 4544 return;
2827 4545
2828 ev_stat_stat (EV_A_ w); 4546 ev_stat_stat (EV_A_ w);
… …
2838 4556
2839 if (fs_fd >= 0) 4557 if (fs_fd >= 0)
2840 infy_add (EV_A_ w); 4558 infy_add (EV_A_ w);
2841 else 4559 else
2842#endif 4560#endif
4561 {
2843 ev_timer_again (EV_A_ &w->timer); 4562 ev_timer_again (EV_A_ &w->timer);
4563 ev_unref (EV_A);
4564 }
2844 4565
2845 ev_start (EV_A_ (W)w, 1); 4566 ev_start (EV_A_ (W)w, 1);
2846 4567
2847 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
2848} 4569}
2849 4570
2850void 4571void
2851ev_stat_stop (EV_P_ ev_stat *w) 4572ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2852{ 4573{
2853 clear_pending (EV_A_ (W)w); 4574 clear_pending (EV_A_ (W)w);
2854 if (expect_false (!ev_is_active (w))) 4575 if (expect_false (!ev_is_active (w)))
2855 return; 4576 return;
2856 4577
2857 EV_FREQUENT_CHECK; 4578 EV_FREQUENT_CHECK;
2858 4579
2859#if EV_USE_INOTIFY 4580#if EV_USE_INOTIFY
2860 infy_del (EV_A_ w); 4581 infy_del (EV_A_ w);
2861#endif 4582#endif
4583
4584 if (ev_is_active (&w->timer))
4585 {
4586 ev_ref (EV_A);
2862 ev_timer_stop (EV_A_ &w->timer); 4587 ev_timer_stop (EV_A_ &w->timer);
4588 }
2863 4589
2864 ev_stop (EV_A_ (W)w); 4590 ev_stop (EV_A_ (W)w);
2865 4591
2866 EV_FREQUENT_CHECK; 4592 EV_FREQUENT_CHECK;
2867} 4593}
2868#endif 4594#endif
2869 4595
2870#if EV_IDLE_ENABLE 4596#if EV_IDLE_ENABLE
2871void 4597void
2872ev_idle_start (EV_P_ ev_idle *w) 4598ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2873{ 4599{
2874 if (expect_false (ev_is_active (w))) 4600 if (expect_false (ev_is_active (w)))
2875 return; 4601 return;
2876 4602
2877 pri_adjust (EV_A_ (W)w); 4603 pri_adjust (EV_A_ (W)w);
… …
2890 4616
2891 EV_FREQUENT_CHECK; 4617 EV_FREQUENT_CHECK;
2892} 4618}
2893 4619
2894void 4620void
2895ev_idle_stop (EV_P_ ev_idle *w) 4621ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2896{ 4622{
2897 clear_pending (EV_A_ (W)w); 4623 clear_pending (EV_A_ (W)w);
2898 if (expect_false (!ev_is_active (w))) 4624 if (expect_false (!ev_is_active (w)))
2899 return; 4625 return;
2900 4626
… …
2912 4638
2913 EV_FREQUENT_CHECK; 4639 EV_FREQUENT_CHECK;
2914} 4640}
2915#endif 4641#endif
2916 4642
4643#if EV_PREPARE_ENABLE
2917void 4644void
2918ev_prepare_start (EV_P_ ev_prepare *w) 4645ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2919{ 4646{
2920 if (expect_false (ev_is_active (w))) 4647 if (expect_false (ev_is_active (w)))
2921 return; 4648 return;
2922 4649
2923 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
… …
2928 4655
2929 EV_FREQUENT_CHECK; 4656 EV_FREQUENT_CHECK;
2930} 4657}
2931 4658
2932void 4659void
2933ev_prepare_stop (EV_P_ ev_prepare *w) 4660ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2934{ 4661{
2935 clear_pending (EV_A_ (W)w); 4662 clear_pending (EV_A_ (W)w);
2936 if (expect_false (!ev_is_active (w))) 4663 if (expect_false (!ev_is_active (w)))
2937 return; 4664 return;
2938 4665
… …
2947 4674
2948 ev_stop (EV_A_ (W)w); 4675 ev_stop (EV_A_ (W)w);
2949 4676
2950 EV_FREQUENT_CHECK; 4677 EV_FREQUENT_CHECK;
2951} 4678}
4679#endif
2952 4680
4681#if EV_CHECK_ENABLE
2953void 4682void
2954ev_check_start (EV_P_ ev_check *w) 4683ev_check_start (EV_P_ ev_check *w) EV_THROW
2955{ 4684{
2956 if (expect_false (ev_is_active (w))) 4685 if (expect_false (ev_is_active (w)))
2957 return; 4686 return;
2958 4687
2959 EV_FREQUENT_CHECK; 4688 EV_FREQUENT_CHECK;
… …
2964 4693
2965 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
2966} 4695}
2967 4696
2968void 4697void
2969ev_check_stop (EV_P_ ev_check *w) 4698ev_check_stop (EV_P_ ev_check *w) EV_THROW
2970{ 4699{
2971 clear_pending (EV_A_ (W)w); 4700 clear_pending (EV_A_ (W)w);
2972 if (expect_false (!ev_is_active (w))) 4701 if (expect_false (!ev_is_active (w)))
2973 return; 4702 return;
2974 4703
… …
2983 4712
2984 ev_stop (EV_A_ (W)w); 4713 ev_stop (EV_A_ (W)w);
2985 4714
2986 EV_FREQUENT_CHECK; 4715 EV_FREQUENT_CHECK;
2987} 4716}
4717#endif
2988 4718
2989#if EV_EMBED_ENABLE 4719#if EV_EMBED_ENABLE
2990void noinline 4720noinline
4721void
2991ev_embed_sweep (EV_P_ ev_embed *w) 4722ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2992{ 4723{
2993 ev_loop (w->other, EVLOOP_NONBLOCK); 4724 ev_run (w->other, EVRUN_NOWAIT);
2994} 4725}
2995 4726
2996static void 4727static void
2997embed_io_cb (EV_P_ ev_io *io, int revents) 4728embed_io_cb (EV_P_ ev_io *io, int revents)
2998{ 4729{
2999 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4730 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3000 4731
3001 if (ev_cb (w)) 4732 if (ev_cb (w))
3002 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4733 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3003 else 4734 else
3004 ev_loop (w->other, EVLOOP_NONBLOCK); 4735 ev_run (w->other, EVRUN_NOWAIT);
3005} 4736}
3006 4737
3007static void 4738static void
3008embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4739embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3009{ 4740{
3010 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4741 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3011 4742
3012 { 4743 {
3013 struct ev_loop *loop = w->other; 4744 EV_P = w->other;
3014 4745
3015 while (fdchangecnt) 4746 while (fdchangecnt)
3016 { 4747 {
3017 fd_reify (EV_A); 4748 fd_reify (EV_A);
3018 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4749 ev_run (EV_A_ EVRUN_NOWAIT);
3019 } 4750 }
3020 } 4751 }
3021} 4752}
3022 4753
3023static void 4754static void
… …
3026 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4757 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3027 4758
3028 ev_embed_stop (EV_A_ w); 4759 ev_embed_stop (EV_A_ w);
3029 4760
3030 { 4761 {
3031 struct ev_loop *loop = w->other; 4762 EV_P = w->other;
3032 4763
3033 ev_loop_fork (EV_A); 4764 ev_loop_fork (EV_A);
3034 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4765 ev_run (EV_A_ EVRUN_NOWAIT);
3035 } 4766 }
3036 4767
3037 ev_embed_start (EV_A_ w); 4768 ev_embed_start (EV_A_ w);
3038} 4769}
3039 4770
… …
3044 ev_idle_stop (EV_A_ idle); 4775 ev_idle_stop (EV_A_ idle);
3045} 4776}
3046#endif 4777#endif
3047 4778
3048void 4779void
3049ev_embed_start (EV_P_ ev_embed *w) 4780ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3050{ 4781{
3051 if (expect_false (ev_is_active (w))) 4782 if (expect_false (ev_is_active (w)))
3052 return; 4783 return;
3053 4784
3054 { 4785 {
3055 struct ev_loop *loop = w->other; 4786 EV_P = w->other;
3056 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4787 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3057 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4788 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3058 } 4789 }
3059 4790
3060 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
… …
3075 4806
3076 EV_FREQUENT_CHECK; 4807 EV_FREQUENT_CHECK;
3077} 4808}
3078 4809
3079void 4810void
3080ev_embed_stop (EV_P_ ev_embed *w) 4811ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3081{ 4812{
3082 clear_pending (EV_A_ (W)w); 4813 clear_pending (EV_A_ (W)w);
3083 if (expect_false (!ev_is_active (w))) 4814 if (expect_false (!ev_is_active (w)))
3084 return; 4815 return;
3085 4816
… …
3087 4818
3088 ev_io_stop (EV_A_ &w->io); 4819 ev_io_stop (EV_A_ &w->io);
3089 ev_prepare_stop (EV_A_ &w->prepare); 4820 ev_prepare_stop (EV_A_ &w->prepare);
3090 ev_fork_stop (EV_A_ &w->fork); 4821 ev_fork_stop (EV_A_ &w->fork);
3091 4822
4823 ev_stop (EV_A_ (W)w);
4824
3092 EV_FREQUENT_CHECK; 4825 EV_FREQUENT_CHECK;
3093} 4826}
3094#endif 4827#endif
3095 4828
3096#if EV_FORK_ENABLE 4829#if EV_FORK_ENABLE
3097void 4830void
3098ev_fork_start (EV_P_ ev_fork *w) 4831ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3099{ 4832{
3100 if (expect_false (ev_is_active (w))) 4833 if (expect_false (ev_is_active (w)))
3101 return; 4834 return;
3102 4835
3103 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
… …
3108 4841
3109 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
3110} 4843}
3111 4844
3112void 4845void
3113ev_fork_stop (EV_P_ ev_fork *w) 4846ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3114{ 4847{
3115 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
3116 if (expect_false (!ev_is_active (w))) 4849 if (expect_false (!ev_is_active (w)))
3117 return; 4850 return;
3118 4851
… …
3129 4862
3130 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
3131} 4864}
3132#endif 4865#endif
3133 4866
3134#if EV_ASYNC_ENABLE 4867#if EV_CLEANUP_ENABLE
3135void 4868void
3136ev_async_start (EV_P_ ev_async *w) 4869ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3137{ 4870{
3138 if (expect_false (ev_is_active (w))) 4871 if (expect_false (ev_is_active (w)))
3139 return; 4872 return;
4873
4874 EV_FREQUENT_CHECK;
4875
4876 ev_start (EV_A_ (W)w, ++cleanupcnt);
4877 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4878 cleanups [cleanupcnt - 1] = w;
4879
4880 /* cleanup watchers should never keep a refcount on the loop */
4881 ev_unref (EV_A);
4882 EV_FREQUENT_CHECK;
4883}
4884
4885void
4886ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4887{
4888 clear_pending (EV_A_ (W)w);
4889 if (expect_false (!ev_is_active (w)))
4890 return;
4891
4892 EV_FREQUENT_CHECK;
4893 ev_ref (EV_A);
4894
4895 {
4896 int active = ev_active (w);
4897
4898 cleanups [active - 1] = cleanups [--cleanupcnt];
4899 ev_active (cleanups [active - 1]) = active;
4900 }
4901
4902 ev_stop (EV_A_ (W)w);
4903
4904 EV_FREQUENT_CHECK;
4905}
4906#endif
4907
4908#if EV_ASYNC_ENABLE
4909void
4910ev_async_start (EV_P_ ev_async *w) EV_THROW
4911{
4912 if (expect_false (ev_is_active (w)))
4913 return;
4914
4915 w->sent = 0;
3140 4916
3141 evpipe_init (EV_A); 4917 evpipe_init (EV_A);
3142 4918
3143 EV_FREQUENT_CHECK; 4919 EV_FREQUENT_CHECK;
3144 4920
… …
3148 4924
3149 EV_FREQUENT_CHECK; 4925 EV_FREQUENT_CHECK;
3150} 4926}
3151 4927
3152void 4928void
3153ev_async_stop (EV_P_ ev_async *w) 4929ev_async_stop (EV_P_ ev_async *w) EV_THROW
3154{ 4930{
3155 clear_pending (EV_A_ (W)w); 4931 clear_pending (EV_A_ (W)w);
3156 if (expect_false (!ev_is_active (w))) 4932 if (expect_false (!ev_is_active (w)))
3157 return; 4933 return;
3158 4934
… …
3169 4945
3170 EV_FREQUENT_CHECK; 4946 EV_FREQUENT_CHECK;
3171} 4947}
3172 4948
3173void 4949void
3174ev_async_send (EV_P_ ev_async *w) 4950ev_async_send (EV_P_ ev_async *w) EV_THROW
3175{ 4951{
3176 w->sent = 1; 4952 w->sent = 1;
3177 evpipe_write (EV_A_ &gotasync); 4953 evpipe_write (EV_A_ &async_pending);
3178} 4954}
3179#endif 4955#endif
3180 4956
3181/*****************************************************************************/ 4957/*****************************************************************************/
3182 4958
… …
3216 4992
3217 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4993 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3218} 4994}
3219 4995
3220void 4996void
3221ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4997ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3222{ 4998{
3223 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4999 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3224 5000
3225 if (expect_false (!once)) 5001 if (expect_false (!once))
3226 { 5002 {
3227 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 5003 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3228 return; 5004 return;
3229 } 5005 }
3230 5006
3231 once->cb = cb; 5007 once->cb = cb;
3232 once->arg = arg; 5008 once->arg = arg;
… …
3247} 5023}
3248 5024
3249/*****************************************************************************/ 5025/*****************************************************************************/
3250 5026
3251#if EV_WALK_ENABLE 5027#if EV_WALK_ENABLE
5028ecb_cold
3252void 5029void
3253ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5030ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3254{ 5031{
3255 int i, j; 5032 int i, j;
3256 ev_watcher_list *wl, *wn; 5033 ev_watcher_list *wl, *wn;
3257 5034
3258 if (types & (EV_IO | EV_EMBED)) 5035 if (types & (EV_IO | EV_EMBED))
… …
3301 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5078 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3302#endif 5079#endif
3303 5080
3304#if EV_IDLE_ENABLE 5081#if EV_IDLE_ENABLE
3305 if (types & EV_IDLE) 5082 if (types & EV_IDLE)
3306 for (j = NUMPRI; i--; ) 5083 for (j = NUMPRI; j--; )
3307 for (i = idlecnt [j]; i--; ) 5084 for (i = idlecnt [j]; i--; )
3308 cb (EV_A_ EV_IDLE, idles [j][i]); 5085 cb (EV_A_ EV_IDLE, idles [j][i]);
3309#endif 5086#endif
3310 5087
3311#if EV_FORK_ENABLE 5088#if EV_FORK_ENABLE
… …
3319 if (types & EV_ASYNC) 5096 if (types & EV_ASYNC)
3320 for (i = asynccnt; i--; ) 5097 for (i = asynccnt; i--; )
3321 cb (EV_A_ EV_ASYNC, asyncs [i]); 5098 cb (EV_A_ EV_ASYNC, asyncs [i]);
3322#endif 5099#endif
3323 5100
5101#if EV_PREPARE_ENABLE
3324 if (types & EV_PREPARE) 5102 if (types & EV_PREPARE)
3325 for (i = preparecnt; i--; ) 5103 for (i = preparecnt; i--; )
3326#if EV_EMBED_ENABLE 5104# if EV_EMBED_ENABLE
3327 if (ev_cb (prepares [i]) != embed_prepare_cb) 5105 if (ev_cb (prepares [i]) != embed_prepare_cb)
3328#endif 5106# endif
3329 cb (EV_A_ EV_PREPARE, prepares [i]); 5107 cb (EV_A_ EV_PREPARE, prepares [i]);
5108#endif
3330 5109
5110#if EV_CHECK_ENABLE
3331 if (types & EV_CHECK) 5111 if (types & EV_CHECK)
3332 for (i = checkcnt; i--; ) 5112 for (i = checkcnt; i--; )
3333 cb (EV_A_ EV_CHECK, checks [i]); 5113 cb (EV_A_ EV_CHECK, checks [i]);
5114#endif
3334 5115
5116#if EV_SIGNAL_ENABLE
3335 if (types & EV_SIGNAL) 5117 if (types & EV_SIGNAL)
3336 for (i = 0; i < signalmax; ++i) 5118 for (i = 0; i < EV_NSIG - 1; ++i)
3337 for (wl = signals [i].head; wl; ) 5119 for (wl = signals [i].head; wl; )
3338 { 5120 {
3339 wn = wl->next; 5121 wn = wl->next;
3340 cb (EV_A_ EV_SIGNAL, wl); 5122 cb (EV_A_ EV_SIGNAL, wl);
3341 wl = wn; 5123 wl = wn;
3342 } 5124 }
5125#endif
3343 5126
5127#if EV_CHILD_ENABLE
3344 if (types & EV_CHILD) 5128 if (types & EV_CHILD)
3345 for (i = EV_PID_HASHSIZE; i--; ) 5129 for (i = (EV_PID_HASHSIZE); i--; )
3346 for (wl = childs [i]; wl; ) 5130 for (wl = childs [i]; wl; )
3347 { 5131 {
3348 wn = wl->next; 5132 wn = wl->next;
3349 cb (EV_A_ EV_CHILD, wl); 5133 cb (EV_A_ EV_CHILD, wl);
3350 wl = wn; 5134 wl = wn;
3351 } 5135 }
5136#endif
3352/* EV_STAT 0x00001000 /* stat data changed */ 5137/* EV_STAT 0x00001000 /* stat data changed */
3353/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5138/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3354} 5139}
3355#endif 5140#endif
3356 5141
3357#if EV_MULTIPLICITY 5142#if EV_MULTIPLICITY
3358 #include "ev_wrap.h" 5143 #include "ev_wrap.h"
3359#endif 5144#endif
3360 5145
3361#ifdef __cplusplus
3362}
3363#endif
3364

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