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Comparing libev/ev.c (file contents):
Revision 1.304 by root, Sun Jul 19 03:12:28 2009 UTC vs.
Revision 1.483 by root, Tue Jul 31 04:45:58 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
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h> 167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
157#include <stdlib.h> 177#include <stdlib.h>
178#include <string.h>
158#include <fcntl.h> 179#include <fcntl.h>
159#include <stddef.h> 180#include <stddef.h>
160 181
161#include <stdio.h> 182#include <stdio.h>
162 183
163#include <assert.h> 184#include <assert.h>
164#include <errno.h> 185#include <errno.h>
165#include <sys/types.h> 186#include <sys/types.h>
166#include <time.h> 187#include <time.h>
188#include <limits.h>
167 189
168#include <signal.h> 190#include <signal.h>
169 191
170#ifdef EV_H 192#ifdef EV_H
171# include EV_H 193# include EV_H
172#else 194#else
173# include "ev.h" 195# include "ev.h"
196#endif
197
198#if EV_NO_THREADS
199# undef EV_NO_SMP
200# define EV_NO_SMP 1
201# undef ECB_NO_THREADS
202# define ECB_NO_THREADS 1
203#endif
204#if EV_NO_SMP
205# undef EV_NO_SMP
206# define ECB_NO_SMP 1
174#endif 207#endif
175 208
176#ifndef _WIN32 209#ifndef _WIN32
177# include <sys/time.h> 210# include <sys/time.h>
178# include <sys/wait.h> 211# include <sys/wait.h>
179# include <unistd.h> 212# include <unistd.h>
180#else 213#else
181# include <io.h> 214# include <io.h>
182# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
183# include <windows.h> 217# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
186# endif 220# endif
221# undef EV_AVOID_STDIO
187#endif 222#endif
188 223
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
190 225
226/* try to deduce the maximum number of signals on this platform */
227#if defined EV_NSIG
228/* use what's provided */
229#elif defined NSIG
230# define EV_NSIG (NSIG)
231#elif defined _NSIG
232# define EV_NSIG (_NSIG)
233#elif defined SIGMAX
234# define EV_NSIG (SIGMAX+1)
235#elif defined SIG_MAX
236# define EV_NSIG (SIG_MAX+1)
237#elif defined _SIG_MAX
238# define EV_NSIG (_SIG_MAX+1)
239#elif defined MAXSIG
240# define EV_NSIG (MAXSIG+1)
241#elif defined MAX_SIG
242# define EV_NSIG (MAX_SIG+1)
243#elif defined SIGARRAYSIZE
244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
245#elif defined _sys_nsig
246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
247#else
248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
254
191#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
192# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
193# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
194# else 258# else
195# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
196# endif 260# endif
197#endif 261#endif
198 262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
269# endif
270#endif
271
199#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
200# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
201# define EV_USE_MONOTONIC 1 274# define EV_USE_MONOTONIC EV_FEATURE_OS
202# else 275# else
203# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
204# endif 277# endif
205#endif 278#endif
206 279
… …
208# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 281# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
209#endif 282#endif
210 283
211#ifndef EV_USE_NANOSLEEP 284#ifndef EV_USE_NANOSLEEP
212# if _POSIX_C_SOURCE >= 199309L 285# if _POSIX_C_SOURCE >= 199309L
213# define EV_USE_NANOSLEEP 1 286# define EV_USE_NANOSLEEP EV_FEATURE_OS
214# else 287# else
215# define EV_USE_NANOSLEEP 0 288# define EV_USE_NANOSLEEP 0
216# endif 289# endif
217#endif 290#endif
218 291
219#ifndef EV_USE_SELECT 292#ifndef EV_USE_SELECT
220# define EV_USE_SELECT 1 293# define EV_USE_SELECT EV_FEATURE_BACKENDS
221#endif 294#endif
222 295
223#ifndef EV_USE_POLL 296#ifndef EV_USE_POLL
224# ifdef _WIN32 297# ifdef _WIN32
225# define EV_USE_POLL 0 298# define EV_USE_POLL 0
226# else 299# else
227# define EV_USE_POLL 1 300# define EV_USE_POLL EV_FEATURE_BACKENDS
228# endif 301# endif
229#endif 302#endif
230 303
231#ifndef EV_USE_EPOLL 304#ifndef EV_USE_EPOLL
232# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 305# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
233# define EV_USE_EPOLL 1 306# define EV_USE_EPOLL EV_FEATURE_BACKENDS
234# else 307# else
235# define EV_USE_EPOLL 0 308# define EV_USE_EPOLL 0
236# endif 309# endif
237#endif 310#endif
238 311
… …
244# define EV_USE_PORT 0 317# define EV_USE_PORT 0
245#endif 318#endif
246 319
247#ifndef EV_USE_INOTIFY 320#ifndef EV_USE_INOTIFY
248# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 321# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
249# define EV_USE_INOTIFY 1 322# define EV_USE_INOTIFY EV_FEATURE_OS
250# else 323# else
251# define EV_USE_INOTIFY 0 324# define EV_USE_INOTIFY 0
252# endif 325# endif
253#endif 326#endif
254 327
255#ifndef EV_PID_HASHSIZE 328#ifndef EV_PID_HASHSIZE
256# if EV_MINIMAL 329# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_PID_HASHSIZE 1
258# else
259# define EV_PID_HASHSIZE 16
260# endif
261#endif 330#endif
262 331
263#ifndef EV_INOTIFY_HASHSIZE 332#ifndef EV_INOTIFY_HASHSIZE
264# if EV_MINIMAL 333# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
265# define EV_INOTIFY_HASHSIZE 1
266# else
267# define EV_INOTIFY_HASHSIZE 16
268# endif
269#endif 334#endif
270 335
271#ifndef EV_USE_EVENTFD 336#ifndef EV_USE_EVENTFD
272# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
273# define EV_USE_EVENTFD 1 338# define EV_USE_EVENTFD EV_FEATURE_OS
274# else 339# else
275# define EV_USE_EVENTFD 0 340# define EV_USE_EVENTFD 0
276# endif 341# endif
277#endif 342#endif
278 343
279#ifndef EV_USE_SIGNALFD 344#ifndef EV_USE_SIGNALFD
280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 345# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
281# define EV_USE_SIGNALFD 1 346# define EV_USE_SIGNALFD EV_FEATURE_OS
282# else 347# else
283# define EV_USE_SIGNALFD 0 348# define EV_USE_SIGNALFD 0
284# endif 349# endif
285#endif 350#endif
286 351
… …
289# define EV_USE_4HEAP 1 354# define EV_USE_4HEAP 1
290# define EV_HEAP_CACHE_AT 1 355# define EV_HEAP_CACHE_AT 1
291#endif 356#endif
292 357
293#ifndef EV_VERIFY 358#ifndef EV_VERIFY
294# define EV_VERIFY !EV_MINIMAL 359# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
295#endif 360#endif
296 361
297#ifndef EV_USE_4HEAP 362#ifndef EV_USE_4HEAP
298# define EV_USE_4HEAP !EV_MINIMAL 363# define EV_USE_4HEAP EV_FEATURE_DATA
299#endif 364#endif
300 365
301#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
302# define EV_HEAP_CACHE_AT !EV_MINIMAL 367# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
368#endif
369
370#ifdef __ANDROID__
371/* supposedly, android doesn't typedef fd_mask */
372# undef EV_USE_SELECT
373# define EV_USE_SELECT 0
374/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
375# undef EV_USE_CLOCK_SYSCALL
376# define EV_USE_CLOCK_SYSCALL 0
377#endif
378
379/* aix's poll.h seems to cause lots of trouble */
380#ifdef _AIX
381/* AIX has a completely broken poll.h header */
382# undef EV_USE_POLL
383# define EV_USE_POLL 0
303#endif 384#endif
304 385
305/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 386/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
306/* which makes programs even slower. might work on other unices, too. */ 387/* which makes programs even slower. might work on other unices, too. */
307#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
308# include <syscall.h> 389# include <sys/syscall.h>
309# ifdef SYS_clock_gettime 390# ifdef SYS_clock_gettime
310# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 391# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
311# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
312# define EV_USE_MONOTONIC 1 393# define EV_USE_MONOTONIC 1
313# else 394# else
… …
332# undef EV_USE_INOTIFY 413# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 414# define EV_USE_INOTIFY 0
334#endif 415#endif
335 416
336#if !EV_USE_NANOSLEEP 417#if !EV_USE_NANOSLEEP
337# ifndef _WIN32 418/* hp-ux has it in sys/time.h, which we unconditionally include above */
419# if !defined _WIN32 && !defined __hpux
338# include <sys/select.h> 420# include <sys/select.h>
339# endif 421# endif
340#endif 422#endif
341 423
342#if EV_USE_INOTIFY 424#if EV_USE_INOTIFY
343# include <sys/utsname.h>
344# include <sys/statfs.h> 425# include <sys/statfs.h>
345# include <sys/inotify.h> 426# include <sys/inotify.h>
346/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 427/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
347# ifndef IN_DONT_FOLLOW 428# ifndef IN_DONT_FOLLOW
348# undef EV_USE_INOTIFY 429# undef EV_USE_INOTIFY
349# define EV_USE_INOTIFY 0 430# define EV_USE_INOTIFY 0
350# endif 431# endif
351#endif 432#endif
352 433
353#if EV_SELECT_IS_WINSOCKET
354# include <winsock.h>
355#endif
356
357#if EV_USE_EVENTFD 434#if EV_USE_EVENTFD
358/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 435/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
359# include <stdint.h> 436# include <stdint.h>
360# ifndef EFD_NONBLOCK 437# ifndef EFD_NONBLOCK
361# define EFD_NONBLOCK O_NONBLOCK 438# define EFD_NONBLOCK O_NONBLOCK
362# endif 439# endif
363# ifndef EFD_CLOEXEC 440# ifndef EFD_CLOEXEC
441# ifdef O_CLOEXEC
364# define EFD_CLOEXEC O_CLOEXEC 442# define EFD_CLOEXEC O_CLOEXEC
443# else
444# define EFD_CLOEXEC 02000000
445# endif
365# endif 446# endif
366# ifdef __cplusplus 447EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
367extern "C" { 448#endif
449
450#if EV_USE_SIGNALFD
451/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
452# include <stdint.h>
453# ifndef SFD_NONBLOCK
454# define SFD_NONBLOCK O_NONBLOCK
368# endif 455# endif
369int eventfd (unsigned int initval, int flags); 456# ifndef SFD_CLOEXEC
370# ifdef __cplusplus 457# ifdef O_CLOEXEC
371} 458# define SFD_CLOEXEC O_CLOEXEC
459# else
460# define SFD_CLOEXEC 02000000
461# endif
372# endif 462# endif
373#endif 463EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
374 464
375#if EV_USE_SIGNALFD 465struct signalfd_siginfo
376# include <sys/signalfd.h> 466{
467 uint32_t ssi_signo;
468 char pad[128 - sizeof (uint32_t)];
469};
377#endif 470#endif
378 471
379/**/ 472/**/
380 473
381#if EV_VERIFY >= 3 474#if EV_VERIFY >= 3
382# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 475# define EV_FREQUENT_CHECK ev_verify (EV_A)
383#else 476#else
384# define EV_FREQUENT_CHECK do { } while (0) 477# define EV_FREQUENT_CHECK do { } while (0)
385#endif 478#endif
386 479
387/* 480/*
388 * This is used to avoid floating point rounding problems. 481 * This is used to work around floating point rounding problems.
389 * It is added to ev_rt_now when scheduling periodics
390 * to ensure progress, time-wise, even when rounding
391 * errors are against us.
392 * This value is good at least till the year 4000. 482 * This value is good at least till the year 4000.
393 * Better solutions welcome.
394 */ 483 */
395#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 484#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
485/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
396 486
397#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 487#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
398#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 488#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
399/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
400 489
490#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
491#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
492
493/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
494/* ECB.H BEGIN */
495/*
496 * libecb - http://software.schmorp.de/pkg/libecb
497 *
498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
499 * Copyright (©) 2011 Emanuele Giaquinta
500 * All rights reserved.
501 *
502 * Redistribution and use in source and binary forms, with or without modifica-
503 * tion, are permitted provided that the following conditions are met:
504 *
505 * 1. Redistributions of source code must retain the above copyright notice,
506 * this list of conditions and the following disclaimer.
507 *
508 * 2. Redistributions in binary form must reproduce the above copyright
509 * notice, this list of conditions and the following disclaimer in the
510 * documentation and/or other materials provided with the distribution.
511 *
512 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
513 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
514 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
515 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
516 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
517 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
519 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
520 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
521 * OF THE POSSIBILITY OF SUCH DAMAGE.
522 *
523 * Alternatively, the contents of this file may be used under the terms of
524 * the GNU General Public License ("GPL") version 2 or any later version,
525 * in which case the provisions of the GPL are applicable instead of
526 * the above. If you wish to allow the use of your version of this file
527 * only under the terms of the GPL and not to allow others to use your
528 * version of this file under the BSD license, indicate your decision
529 * by deleting the provisions above and replace them with the notice
530 * and other provisions required by the GPL. If you do not delete the
531 * provisions above, a recipient may use your version of this file under
532 * either the BSD or the GPL.
533 */
534
535#ifndef ECB_H
536#define ECB_H
537
538/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005
540
541#ifdef _WIN32
542 typedef signed char int8_t;
543 typedef unsigned char uint8_t;
544 typedef signed short int16_t;
545 typedef unsigned short uint16_t;
546 typedef signed int int32_t;
547 typedef unsigned int uint32_t;
401#if __GNUC__ >= 4 548 #if __GNUC__
549 typedef signed long long int64_t;
550 typedef unsigned long long uint64_t;
551 #else /* _MSC_VER || __BORLANDC__ */
552 typedef signed __int64 int64_t;
553 typedef unsigned __int64 uint64_t;
554 #endif
555 #ifdef _WIN64
556 #define ECB_PTRSIZE 8
557 typedef uint64_t uintptr_t;
558 typedef int64_t intptr_t;
559 #else
560 #define ECB_PTRSIZE 4
561 typedef uint32_t uintptr_t;
562 typedef int32_t intptr_t;
563 #endif
564#else
565 #include <inttypes.h>
566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
567 #define ECB_PTRSIZE 8
568 #else
569 #define ECB_PTRSIZE 4
570 #endif
571#endif
572
573#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
574#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
575
576/* work around x32 idiocy by defining proper macros */
577#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
578 #if _ILP32
579 #define ECB_AMD64_X32 1
580 #else
581 #define ECB_AMD64 1
582 #endif
583#endif
584
585/* many compilers define _GNUC_ to some versions but then only implement
586 * what their idiot authors think are the "more important" extensions,
587 * causing enormous grief in return for some better fake benchmark numbers.
588 * or so.
589 * we try to detect these and simply assume they are not gcc - if they have
590 * an issue with that they should have done it right in the first place.
591 */
592#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
593 #define ECB_GCC_VERSION(major,minor) 0
594#else
595 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
596#endif
597
598#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
599
600#if __clang__ && defined __has_builtin
601 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
602#else
603 #define ECB_CLANG_BUILTIN(x) 0
604#endif
605
606#if __clang__ && defined __has_extension
607 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
608#else
609 #define ECB_CLANG_EXTENSION(x) 0
610#endif
611
612#define ECB_CPP (__cplusplus+0)
613#define ECB_CPP11 (__cplusplus >= 201103L)
614
615#if ECB_CPP
616 #define ECB_C 0
617 #define ECB_STDC_VERSION 0
618#else
619 #define ECB_C 1
620 #define ECB_STDC_VERSION __STDC_VERSION__
621#endif
622
623#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
624#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
625
626#if ECB_CPP
627 #define ECB_EXTERN_C extern "C"
628 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
629 #define ECB_EXTERN_C_END }
630#else
631 #define ECB_EXTERN_C extern
632 #define ECB_EXTERN_C_BEG
633 #define ECB_EXTERN_C_END
634#endif
635
636/*****************************************************************************/
637
638/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
639/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
640
641#if ECB_NO_THREADS
642 #define ECB_NO_SMP 1
643#endif
644
645#if ECB_NO_SMP
646 #define ECB_MEMORY_FENCE do { } while (0)
647#endif
648
649/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
650#if __xlC__ && ECB_CPP
651 #include <builtins.h>
652#endif
653
654#if 1400 <= _MSC_VER
655 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #if __i386 || __i386__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
664 #elif ECB_GCC_AMD64
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
670 #elif defined __ARM_ARCH_2__ \
671 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
672 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
673 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
674 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
675 || defined __ARM_ARCH_5TEJ__
676 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
677 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
678 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
679 || defined __ARM_ARCH_6T2__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
681 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
682 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
684 #elif __aarch64__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
686 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
688 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
689 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
690 #elif defined __s390__ || defined __s390x__
691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
692 #elif defined __mips__
693 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
694 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
696 #elif defined __alpha__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
698 #elif defined __hppa__
699 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
701 #elif defined __ia64__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
703 #elif defined __m68k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
705 #elif defined __m88k__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
707 #elif defined __sh__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
709 #endif
710 #endif
711#endif
712
713#ifndef ECB_MEMORY_FENCE
714 #if ECB_GCC_VERSION(4,7)
715 /* see comment below (stdatomic.h) about the C11 memory model. */
716 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
717 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
718 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
719
720 #elif ECB_CLANG_EXTENSION(c_atomic)
721 /* see comment below (stdatomic.h) about the C11 memory model. */
722 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
723 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
724 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
725
726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
727 #define ECB_MEMORY_FENCE __sync_synchronize ()
728 #elif _MSC_VER >= 1500 /* VC++ 2008 */
729 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
730 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
731 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
732 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
733 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
734 #elif _MSC_VER >= 1400 /* VC++ 2005 */
735 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
736 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
737 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
738 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
739 #elif defined _WIN32
740 #include <WinNT.h>
741 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
742 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
743 #include <mbarrier.h>
744 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
745 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
746 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
747 #elif __xlC__
748 #define ECB_MEMORY_FENCE __sync ()
749 #endif
750#endif
751
752#ifndef ECB_MEMORY_FENCE
753 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
754 /* we assume that these memory fences work on all variables/all memory accesses, */
755 /* not just C11 atomics and atomic accesses */
756 #include <stdatomic.h>
757 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
758 /* any fence other than seq_cst, which isn't very efficient for us. */
759 /* Why that is, we don't know - either the C11 memory model is quite useless */
760 /* for most usages, or gcc and clang have a bug */
761 /* I *currently* lean towards the latter, and inefficiently implement */
762 /* all three of ecb's fences as a seq_cst fence */
763 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
764 /* for all __atomic_thread_fence's except seq_cst */
765 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
766 #endif
767#endif
768
769#ifndef ECB_MEMORY_FENCE
770 #if !ECB_AVOID_PTHREADS
771 /*
772 * if you get undefined symbol references to pthread_mutex_lock,
773 * or failure to find pthread.h, then you should implement
774 * the ECB_MEMORY_FENCE operations for your cpu/compiler
775 * OR provide pthread.h and link against the posix thread library
776 * of your system.
777 */
778 #include <pthread.h>
779 #define ECB_NEEDS_PTHREADS 1
780 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
781
782 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
783 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
784 #endif
785#endif
786
787#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
788 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
789#endif
790
791#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
792 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
793#endif
794
795/*****************************************************************************/
796
797#if ECB_CPP
798 #define ecb_inline static inline
799#elif ECB_GCC_VERSION(2,5)
800 #define ecb_inline static __inline__
801#elif ECB_C99
802 #define ecb_inline static inline
803#else
804 #define ecb_inline static
805#endif
806
807#if ECB_GCC_VERSION(3,3)
808 #define ecb_restrict __restrict__
809#elif ECB_C99
810 #define ecb_restrict restrict
811#else
812 #define ecb_restrict
813#endif
814
815typedef int ecb_bool;
816
817#define ECB_CONCAT_(a, b) a ## b
818#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
819#define ECB_STRINGIFY_(a) # a
820#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
821#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
822
823#define ecb_function_ ecb_inline
824
825#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
826 #define ecb_attribute(attrlist) __attribute__ (attrlist)
827#else
828 #define ecb_attribute(attrlist)
829#endif
830
831#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
832 #define ecb_is_constant(expr) __builtin_constant_p (expr)
833#else
834 /* possible C11 impl for integral types
835 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
836 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
837
838 #define ecb_is_constant(expr) 0
839#endif
840
841#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
402# define expect(expr,value) __builtin_expect ((expr),(value)) 842 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
403# define noinline __attribute__ ((noinline))
404#else 843#else
405# define expect(expr,value) (expr) 844 #define ecb_expect(expr,value) (expr)
406# define noinline
407# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
408# define inline
409# endif 845#endif
410#endif
411 846
847#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
848 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
849#else
850 #define ecb_prefetch(addr,rw,locality)
851#endif
852
853/* no emulation for ecb_decltype */
854#if ECB_CPP11
855 // older implementations might have problems with decltype(x)::type, work around it
856 template<class T> struct ecb_decltype_t { typedef T type; };
857 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
858#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
859 #define ecb_decltype(x) __typeof__ (x)
860#endif
861
862#if _MSC_VER >= 1300
863 #define ecb_deprecated __declspec (deprecated)
864#else
865 #define ecb_deprecated ecb_attribute ((__deprecated__))
866#endif
867
868#if _MSC_VER >= 1500
869 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
870#elif ECB_GCC_VERSION(4,5)
871 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
872#else
873 #define ecb_deprecated_message(msg) ecb_deprecated
874#endif
875
876#if _MSC_VER >= 1400
877 #define ecb_noinline __declspec (noinline)
878#else
879 #define ecb_noinline ecb_attribute ((__noinline__))
880#endif
881
882#define ecb_unused ecb_attribute ((__unused__))
883#define ecb_const ecb_attribute ((__const__))
884#define ecb_pure ecb_attribute ((__pure__))
885
886#if ECB_C11 || __IBMC_NORETURN
887 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
888 #define ecb_noreturn _Noreturn
889#elif ECB_CPP11
890 #define ecb_noreturn [[noreturn]]
891#elif _MSC_VER >= 1200
892 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
893 #define ecb_noreturn __declspec (noreturn)
894#else
895 #define ecb_noreturn ecb_attribute ((__noreturn__))
896#endif
897
898#if ECB_GCC_VERSION(4,3)
899 #define ecb_artificial ecb_attribute ((__artificial__))
900 #define ecb_hot ecb_attribute ((__hot__))
901 #define ecb_cold ecb_attribute ((__cold__))
902#else
903 #define ecb_artificial
904 #define ecb_hot
905 #define ecb_cold
906#endif
907
908/* put around conditional expressions if you are very sure that the */
909/* expression is mostly true or mostly false. note that these return */
910/* booleans, not the expression. */
412#define expect_false(expr) expect ((expr) != 0, 0) 911#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
413#define expect_true(expr) expect ((expr) != 0, 1) 912#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
913/* for compatibility to the rest of the world */
914#define ecb_likely(expr) ecb_expect_true (expr)
915#define ecb_unlikely(expr) ecb_expect_false (expr)
916
917/* count trailing zero bits and count # of one bits */
918#if ECB_GCC_VERSION(3,4) \
919 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
920 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
921 && ECB_CLANG_BUILTIN(__builtin_popcount))
922 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
923 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
924 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
925 #define ecb_ctz32(x) __builtin_ctz (x)
926 #define ecb_ctz64(x) __builtin_ctzll (x)
927 #define ecb_popcount32(x) __builtin_popcount (x)
928 /* no popcountll */
929#else
930 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
931 ecb_function_ ecb_const int
932 ecb_ctz32 (uint32_t x)
933 {
934#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
935 unsigned long r;
936 _BitScanForward (&r, x);
937 return (int)r;
938#else
939 int r = 0;
940
941 x &= ~x + 1; /* this isolates the lowest bit */
942
943#if ECB_branchless_on_i386
944 r += !!(x & 0xaaaaaaaa) << 0;
945 r += !!(x & 0xcccccccc) << 1;
946 r += !!(x & 0xf0f0f0f0) << 2;
947 r += !!(x & 0xff00ff00) << 3;
948 r += !!(x & 0xffff0000) << 4;
949#else
950 if (x & 0xaaaaaaaa) r += 1;
951 if (x & 0xcccccccc) r += 2;
952 if (x & 0xf0f0f0f0) r += 4;
953 if (x & 0xff00ff00) r += 8;
954 if (x & 0xffff0000) r += 16;
955#endif
956
957 return r;
958#endif
959 }
960
961 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
962 ecb_function_ ecb_const int
963 ecb_ctz64 (uint64_t x)
964 {
965#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
966 unsigned long r;
967 _BitScanForward64 (&r, x);
968 return (int)r;
969#else
970 int shift = x & 0xffffffff ? 0 : 32;
971 return ecb_ctz32 (x >> shift) + shift;
972#endif
973 }
974
975 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
976 ecb_function_ ecb_const int
977 ecb_popcount32 (uint32_t x)
978 {
979 x -= (x >> 1) & 0x55555555;
980 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
981 x = ((x >> 4) + x) & 0x0f0f0f0f;
982 x *= 0x01010101;
983
984 return x >> 24;
985 }
986
987 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
988 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
989 {
990#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
991 unsigned long r;
992 _BitScanReverse (&r, x);
993 return (int)r;
994#else
995 int r = 0;
996
997 if (x >> 16) { x >>= 16; r += 16; }
998 if (x >> 8) { x >>= 8; r += 8; }
999 if (x >> 4) { x >>= 4; r += 4; }
1000 if (x >> 2) { x >>= 2; r += 2; }
1001 if (x >> 1) { r += 1; }
1002
1003 return r;
1004#endif
1005 }
1006
1007 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1008 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1009 {
1010#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1011 unsigned long r;
1012 _BitScanReverse64 (&r, x);
1013 return (int)r;
1014#else
1015 int r = 0;
1016
1017 if (x >> 32) { x >>= 32; r += 32; }
1018
1019 return r + ecb_ld32 (x);
1020#endif
1021 }
1022#endif
1023
1024ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1026ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1027ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1028
1029ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1030ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1031{
1032 return ( (x * 0x0802U & 0x22110U)
1033 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1034}
1035
1036ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1037ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1038{
1039 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1040 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1041 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1042 x = ( x >> 8 ) | ( x << 8);
1043
1044 return x;
1045}
1046
1047ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1048ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1049{
1050 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1051 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1052 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1053 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1054 x = ( x >> 16 ) | ( x << 16);
1055
1056 return x;
1057}
1058
1059/* popcount64 is only available on 64 bit cpus as gcc builtin */
1060/* so for this version we are lazy */
1061ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1062ecb_function_ ecb_const int
1063ecb_popcount64 (uint64_t x)
1064{
1065 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1066}
1067
1068ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1069ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1070ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1071ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1072ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1073ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1074ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1075ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1076
1077ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1078ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1079ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1080ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1081ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1082ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1083ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1084ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1085
1086#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1087 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1088 #define ecb_bswap16(x) __builtin_bswap16 (x)
1089 #else
1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1091 #endif
1092 #define ecb_bswap32(x) __builtin_bswap32 (x)
1093 #define ecb_bswap64(x) __builtin_bswap64 (x)
1094#elif _MSC_VER
1095 #include <stdlib.h>
1096 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1097 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1098 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1099#else
1100 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1101 ecb_function_ ecb_const uint16_t
1102 ecb_bswap16 (uint16_t x)
1103 {
1104 return ecb_rotl16 (x, 8);
1105 }
1106
1107 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1108 ecb_function_ ecb_const uint32_t
1109 ecb_bswap32 (uint32_t x)
1110 {
1111 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1112 }
1113
1114 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1115 ecb_function_ ecb_const uint64_t
1116 ecb_bswap64 (uint64_t x)
1117 {
1118 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1119 }
1120#endif
1121
1122#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1123 #define ecb_unreachable() __builtin_unreachable ()
1124#else
1125 /* this seems to work fine, but gcc always emits a warning for it :/ */
1126 ecb_inline ecb_noreturn void ecb_unreachable (void);
1127 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1128#endif
1129
1130/* try to tell the compiler that some condition is definitely true */
1131#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1132
1133ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1134ecb_inline ecb_const uint32_t
1135ecb_byteorder_helper (void)
1136{
1137 /* the union code still generates code under pressure in gcc, */
1138 /* but less than using pointers, and always seems to */
1139 /* successfully return a constant. */
1140 /* the reason why we have this horrible preprocessor mess */
1141 /* is to avoid it in all cases, at least on common architectures */
1142 /* or when using a recent enough gcc version (>= 4.6) */
1143#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1144 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1145 #define ECB_LITTLE_ENDIAN 1
1146 return 0x44332211;
1147#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1148 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1149 #define ECB_BIG_ENDIAN 1
1150 return 0x11223344;
1151#else
1152 union
1153 {
1154 uint8_t c[4];
1155 uint32_t u;
1156 } u = { 0x11, 0x22, 0x33, 0x44 };
1157 return u.u;
1158#endif
1159}
1160
1161ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1162ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1163ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1164ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1165
1166#if ECB_GCC_VERSION(3,0) || ECB_C99
1167 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1168#else
1169 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1170#endif
1171
1172#if ECB_CPP
1173 template<typename T>
1174 static inline T ecb_div_rd (T val, T div)
1175 {
1176 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1177 }
1178 template<typename T>
1179 static inline T ecb_div_ru (T val, T div)
1180 {
1181 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1182 }
1183#else
1184 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1185 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1186#endif
1187
1188#if ecb_cplusplus_does_not_suck
1189 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1190 template<typename T, int N>
1191 static inline int ecb_array_length (const T (&arr)[N])
1192 {
1193 return N;
1194 }
1195#else
1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1197#endif
1198
1199ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1200ecb_function_ ecb_const uint32_t
1201ecb_binary16_to_binary32 (uint32_t x)
1202{
1203 unsigned int s = (x & 0x8000) << (31 - 15);
1204 int e = (x >> 10) & 0x001f;
1205 unsigned int m = x & 0x03ff;
1206
1207 if (ecb_expect_false (e == 31))
1208 /* infinity or NaN */
1209 e = 255 - (127 - 15);
1210 else if (ecb_expect_false (!e))
1211 {
1212 if (ecb_expect_true (!m))
1213 /* zero, handled by code below by forcing e to 0 */
1214 e = 0 - (127 - 15);
1215 else
1216 {
1217 /* subnormal, renormalise */
1218 unsigned int s = 10 - ecb_ld32 (m);
1219
1220 m = (m << s) & 0x3ff; /* mask implicit bit */
1221 e -= s - 1;
1222 }
1223 }
1224
1225 /* e and m now are normalised, or zero, (or inf or nan) */
1226 e += 127 - 15;
1227
1228 return s | (e << 23) | (m << (23 - 10));
1229}
1230
1231ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1232ecb_function_ ecb_const uint16_t
1233ecb_binary32_to_binary16 (uint32_t x)
1234{
1235 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1236 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1237 unsigned int m = x & 0x007fffff;
1238
1239 x &= 0x7fffffff;
1240
1241 /* if it's within range of binary16 normals, use fast path */
1242 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1243 {
1244 /* mantissa round-to-even */
1245 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1246
1247 /* handle overflow */
1248 if (ecb_expect_false (m >= 0x00800000))
1249 {
1250 m >>= 1;
1251 e += 1;
1252 }
1253
1254 return s | (e << 10) | (m >> (23 - 10));
1255 }
1256
1257 /* handle large numbers and infinity */
1258 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1259 return s | 0x7c00;
1260
1261 /* handle zero, subnormals and small numbers */
1262 if (ecb_expect_true (x < 0x38800000))
1263 {
1264 /* zero */
1265 if (ecb_expect_true (!x))
1266 return s;
1267
1268 /* handle subnormals */
1269
1270 /* too small, will be zero */
1271 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1272 return s;
1273
1274 m |= 0x00800000; /* make implicit bit explicit */
1275
1276 /* very tricky - we need to round to the nearest e (+10) bit value */
1277 {
1278 unsigned int bits = 14 - e;
1279 unsigned int half = (1 << (bits - 1)) - 1;
1280 unsigned int even = (m >> bits) & 1;
1281
1282 /* if this overflows, we will end up with a normalised number */
1283 m = (m + half + even) >> bits;
1284 }
1285
1286 return s | m;
1287 }
1288
1289 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1290 m >>= 13;
1291
1292 return s | 0x7c00 | m | !m;
1293}
1294
1295/*******************************************************************************/
1296/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1297
1298/* basically, everything uses "ieee pure-endian" floating point numbers */
1299/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1300#if 0 \
1301 || __i386 || __i386__ \
1302 || ECB_GCC_AMD64 \
1303 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1304 || defined __s390__ || defined __s390x__ \
1305 || defined __mips__ \
1306 || defined __alpha__ \
1307 || defined __hppa__ \
1308 || defined __ia64__ \
1309 || defined __m68k__ \
1310 || defined __m88k__ \
1311 || defined __sh__ \
1312 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1313 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1314 || defined __aarch64__
1315 #define ECB_STDFP 1
1316 #include <string.h> /* for memcpy */
1317#else
1318 #define ECB_STDFP 0
1319#endif
1320
1321#ifndef ECB_NO_LIBM
1322
1323 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1324
1325 /* only the oldest of old doesn't have this one. solaris. */
1326 #ifdef INFINITY
1327 #define ECB_INFINITY INFINITY
1328 #else
1329 #define ECB_INFINITY HUGE_VAL
1330 #endif
1331
1332 #ifdef NAN
1333 #define ECB_NAN NAN
1334 #else
1335 #define ECB_NAN ECB_INFINITY
1336 #endif
1337
1338 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1339 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1340 #define ecb_frexpf(x,e) frexpf ((x), (e))
1341 #else
1342 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1343 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1344 #endif
1345
1346 /* convert a float to ieee single/binary32 */
1347 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1348 ecb_function_ ecb_const uint32_t
1349 ecb_float_to_binary32 (float x)
1350 {
1351 uint32_t r;
1352
1353 #if ECB_STDFP
1354 memcpy (&r, &x, 4);
1355 #else
1356 /* slow emulation, works for anything but -0 */
1357 uint32_t m;
1358 int e;
1359
1360 if (x == 0e0f ) return 0x00000000U;
1361 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1362 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1363 if (x != x ) return 0x7fbfffffU;
1364
1365 m = ecb_frexpf (x, &e) * 0x1000000U;
1366
1367 r = m & 0x80000000U;
1368
1369 if (r)
1370 m = -m;
1371
1372 if (e <= -126)
1373 {
1374 m &= 0xffffffU;
1375 m >>= (-125 - e);
1376 e = -126;
1377 }
1378
1379 r |= (e + 126) << 23;
1380 r |= m & 0x7fffffU;
1381 #endif
1382
1383 return r;
1384 }
1385
1386 /* converts an ieee single/binary32 to a float */
1387 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1388 ecb_function_ ecb_const float
1389 ecb_binary32_to_float (uint32_t x)
1390 {
1391 float r;
1392
1393 #if ECB_STDFP
1394 memcpy (&r, &x, 4);
1395 #else
1396 /* emulation, only works for normals and subnormals and +0 */
1397 int neg = x >> 31;
1398 int e = (x >> 23) & 0xffU;
1399
1400 x &= 0x7fffffU;
1401
1402 if (e)
1403 x |= 0x800000U;
1404 else
1405 e = 1;
1406
1407 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1408 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1409
1410 r = neg ? -r : r;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* convert a double to ieee double/binary64 */
1417 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1418 ecb_function_ ecb_const uint64_t
1419 ecb_double_to_binary64 (double x)
1420 {
1421 uint64_t r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 8);
1425 #else
1426 /* slow emulation, works for anything but -0 */
1427 uint64_t m;
1428 int e;
1429
1430 if (x == 0e0 ) return 0x0000000000000000U;
1431 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1432 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1433 if (x != x ) return 0X7ff7ffffffffffffU;
1434
1435 m = frexp (x, &e) * 0x20000000000000U;
1436
1437 r = m & 0x8000000000000000;;
1438
1439 if (r)
1440 m = -m;
1441
1442 if (e <= -1022)
1443 {
1444 m &= 0x1fffffffffffffU;
1445 m >>= (-1021 - e);
1446 e = -1022;
1447 }
1448
1449 r |= ((uint64_t)(e + 1022)) << 52;
1450 r |= m & 0xfffffffffffffU;
1451 #endif
1452
1453 return r;
1454 }
1455
1456 /* converts an ieee double/binary64 to a double */
1457 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1458 ecb_function_ ecb_const double
1459 ecb_binary64_to_double (uint64_t x)
1460 {
1461 double r;
1462
1463 #if ECB_STDFP
1464 memcpy (&r, &x, 8);
1465 #else
1466 /* emulation, only works for normals and subnormals and +0 */
1467 int neg = x >> 63;
1468 int e = (x >> 52) & 0x7ffU;
1469
1470 x &= 0xfffffffffffffU;
1471
1472 if (e)
1473 x |= 0x10000000000000U;
1474 else
1475 e = 1;
1476
1477 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1478 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1479
1480 r = neg ? -r : r;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* convert a float to ieee half/binary16 */
1487 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1488 ecb_function_ ecb_const uint16_t
1489 ecb_float_to_binary16 (float x)
1490 {
1491 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1492 }
1493
1494 /* convert an ieee half/binary16 to float */
1495 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1496 ecb_function_ ecb_const float
1497 ecb_binary16_to_float (uint16_t x)
1498 {
1499 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1500 }
1501
1502#endif
1503
1504#endif
1505
1506/* ECB.H END */
1507
1508#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1509/* if your architecture doesn't need memory fences, e.g. because it is
1510 * single-cpu/core, or if you use libev in a project that doesn't use libev
1511 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1512 * libev, in which cases the memory fences become nops.
1513 * alternatively, you can remove this #error and link against libpthread,
1514 * which will then provide the memory fences.
1515 */
1516# error "memory fences not defined for your architecture, please report"
1517#endif
1518
1519#ifndef ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE do { } while (0)
1521# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1522# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1523#endif
1524
1525#define expect_false(cond) ecb_expect_false (cond)
1526#define expect_true(cond) ecb_expect_true (cond)
1527#define noinline ecb_noinline
1528
414#define inline_size static inline 1529#define inline_size ecb_inline
415 1530
416#if EV_MINIMAL 1531#if EV_FEATURE_CODE
417# define inline_speed static noinline
418#else
419# define inline_speed static inline 1532# define inline_speed ecb_inline
1533#else
1534# define inline_speed noinline static
420#endif 1535#endif
421 1536
422#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
423 1538
424#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
437#define ev_active(w) ((W)(w))->active 1552#define ev_active(w) ((W)(w))->active
438#define ev_at(w) ((WT)(w))->at 1553#define ev_at(w) ((WT)(w))->at
439 1554
440#if EV_USE_REALTIME 1555#if EV_USE_REALTIME
441/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1556/* sig_atomic_t is used to avoid per-thread variables or locking but still */
442/* giving it a reasonably high chance of working on typical architetcures */ 1557/* giving it a reasonably high chance of working on typical architectures */
443static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1558static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
444#endif 1559#endif
445 1560
446#if EV_USE_MONOTONIC 1561#if EV_USE_MONOTONIC
447static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1562static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
448#endif 1563#endif
449 1564
1565#ifndef EV_FD_TO_WIN32_HANDLE
1566# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1567#endif
1568#ifndef EV_WIN32_HANDLE_TO_FD
1569# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1570#endif
1571#ifndef EV_WIN32_CLOSE_FD
1572# define EV_WIN32_CLOSE_FD(fd) close (fd)
1573#endif
1574
450#ifdef _WIN32 1575#ifdef _WIN32
451# include "ev_win32.c" 1576# include "ev_win32.c"
452#endif 1577#endif
453 1578
454/*****************************************************************************/ 1579/*****************************************************************************/
455 1580
1581/* define a suitable floor function (only used by periodics atm) */
1582
1583#if EV_USE_FLOOR
1584# include <math.h>
1585# define ev_floor(v) floor (v)
1586#else
1587
1588#include <float.h>
1589
1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
1592static ev_tstamp
1593ev_floor (ev_tstamp v)
1594{
1595 /* the choice of shift factor is not terribly important */
1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1598#else
1599 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1600#endif
1601
1602 /* argument too large for an unsigned long? */
1603 if (expect_false (v >= shift))
1604 {
1605 ev_tstamp f;
1606
1607 if (v == v - 1.)
1608 return v; /* very large number */
1609
1610 f = shift * ev_floor (v * (1. / shift));
1611 return f + ev_floor (v - f);
1612 }
1613
1614 /* special treatment for negative args? */
1615 if (expect_false (v < 0.))
1616 {
1617 ev_tstamp f = -ev_floor (-v);
1618
1619 return f - (f == v ? 0 : 1);
1620 }
1621
1622 /* fits into an unsigned long */
1623 return (unsigned long)v;
1624}
1625
1626#endif
1627
1628/*****************************************************************************/
1629
1630#ifdef __linux
1631# include <sys/utsname.h>
1632#endif
1633
1634noinline ecb_cold
1635static unsigned int
1636ev_linux_version (void)
1637{
1638#ifdef __linux
1639 unsigned int v = 0;
1640 struct utsname buf;
1641 int i;
1642 char *p = buf.release;
1643
1644 if (uname (&buf))
1645 return 0;
1646
1647 for (i = 3+1; --i; )
1648 {
1649 unsigned int c = 0;
1650
1651 for (;;)
1652 {
1653 if (*p >= '0' && *p <= '9')
1654 c = c * 10 + *p++ - '0';
1655 else
1656 {
1657 p += *p == '.';
1658 break;
1659 }
1660 }
1661
1662 v = (v << 8) | c;
1663 }
1664
1665 return v;
1666#else
1667 return 0;
1668#endif
1669}
1670
1671/*****************************************************************************/
1672
1673#if EV_AVOID_STDIO
1674noinline ecb_cold
1675static void
1676ev_printerr (const char *msg)
1677{
1678 write (STDERR_FILENO, msg, strlen (msg));
1679}
1680#endif
1681
456static void (*syserr_cb)(const char *msg); 1682static void (*syserr_cb)(const char *msg) EV_THROW;
457 1683
1684ecb_cold
458void 1685void
459ev_set_syserr_cb (void (*cb)(const char *msg)) 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
460{ 1687{
461 syserr_cb = cb; 1688 syserr_cb = cb;
462} 1689}
463 1690
464static void noinline 1691noinline ecb_cold
1692static void
465ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
466{ 1694{
467 if (!msg) 1695 if (!msg)
468 msg = "(libev) system error"; 1696 msg = "(libev) system error";
469 1697
470 if (syserr_cb) 1698 if (syserr_cb)
471 syserr_cb (msg); 1699 syserr_cb (msg);
472 else 1700 else
473 { 1701 {
1702#if EV_AVOID_STDIO
1703 ev_printerr (msg);
1704 ev_printerr (": ");
1705 ev_printerr (strerror (errno));
1706 ev_printerr ("\n");
1707#else
474 perror (msg); 1708 perror (msg);
1709#endif
475 abort (); 1710 abort ();
476 } 1711 }
477} 1712}
478 1713
479static void * 1714static void *
480ev_realloc_emul (void *ptr, long size) 1715ev_realloc_emul (void *ptr, long size) EV_THROW
481{ 1716{
482 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
483 * implement realloc (x, 0) (as required by both ansi c-98 and 1718 * implement realloc (x, 0) (as required by both ansi c-89 and
484 * the single unix specification, so work around them here. 1719 * the single unix specification, so work around them here.
1720 * recently, also (at least) fedora and debian started breaking it,
1721 * despite documenting it otherwise.
485 */ 1722 */
486 1723
487 if (size) 1724 if (size)
488 return realloc (ptr, size); 1725 return realloc (ptr, size);
489 1726
490 free (ptr); 1727 free (ptr);
491 return 0; 1728 return 0;
492} 1729}
493 1730
494static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
495 1732
1733ecb_cold
496void 1734void
497ev_set_allocator (void *(*cb)(void *ptr, long size)) 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
498{ 1736{
499 alloc = cb; 1737 alloc = cb;
500} 1738}
501 1739
502inline_speed void * 1740inline_speed void *
… …
504{ 1742{
505 ptr = alloc (ptr, size); 1743 ptr = alloc (ptr, size);
506 1744
507 if (!ptr && size) 1745 if (!ptr && size)
508 { 1746 {
1747#if EV_AVOID_STDIO
1748 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1749#else
509 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1750 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1751#endif
510 abort (); 1752 abort ();
511 } 1753 }
512 1754
513 return ptr; 1755 return ptr;
514} 1756}
… …
530 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1772 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
531 unsigned char unused; 1773 unsigned char unused;
532#if EV_USE_EPOLL 1774#if EV_USE_EPOLL
533 unsigned int egen; /* generation counter to counter epoll bugs */ 1775 unsigned int egen; /* generation counter to counter epoll bugs */
534#endif 1776#endif
535#if EV_SELECT_IS_WINSOCKET 1777#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
536 SOCKET handle; 1778 SOCKET handle;
1779#endif
1780#if EV_USE_IOCP
1781 OVERLAPPED or, ow;
537#endif 1782#endif
538} ANFD; 1783} ANFD;
539 1784
540/* stores the pending event set for a given watcher */ 1785/* stores the pending event set for a given watcher */
541typedef struct 1786typedef struct
… …
583 #undef VAR 1828 #undef VAR
584 }; 1829 };
585 #include "ev_wrap.h" 1830 #include "ev_wrap.h"
586 1831
587 static struct ev_loop default_loop_struct; 1832 static struct ev_loop default_loop_struct;
588 struct ev_loop *ev_default_loop_ptr; 1833 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
589 1834
590#else 1835#else
591 1836
592 ev_tstamp ev_rt_now; 1837 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
593 #define VAR(name,decl) static decl; 1838 #define VAR(name,decl) static decl;
594 #include "ev_vars.h" 1839 #include "ev_vars.h"
595 #undef VAR 1840 #undef VAR
596 1841
597 static int ev_default_loop_ptr; 1842 static int ev_default_loop_ptr;
598 1843
599#endif 1844#endif
600 1845
601#if EV_MINIMAL < 2 1846#if EV_FEATURE_API
602# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1847# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
603# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1848# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
604# define EV_INVOKE_PENDING invoke_cb (EV_A) 1849# define EV_INVOKE_PENDING invoke_cb (EV_A)
605#else 1850#else
606# define EV_RELEASE_CB (void)0 1851# define EV_RELEASE_CB (void)0
607# define EV_ACQUIRE_CB (void)0 1852# define EV_ACQUIRE_CB (void)0
608# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1853# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
609#endif 1854#endif
610 1855
611#define EVUNLOOP_RECURSE 0x80 1856#define EVBREAK_RECURSE 0x80
612 1857
613/*****************************************************************************/ 1858/*****************************************************************************/
614 1859
615#ifndef EV_HAVE_EV_TIME 1860#ifndef EV_HAVE_EV_TIME
616ev_tstamp 1861ev_tstamp
617ev_time (void) 1862ev_time (void) EV_THROW
618{ 1863{
619#if EV_USE_REALTIME 1864#if EV_USE_REALTIME
620 if (expect_true (have_realtime)) 1865 if (expect_true (have_realtime))
621 { 1866 {
622 struct timespec ts; 1867 struct timespec ts;
… …
646 return ev_time (); 1891 return ev_time ();
647} 1892}
648 1893
649#if EV_MULTIPLICITY 1894#if EV_MULTIPLICITY
650ev_tstamp 1895ev_tstamp
651ev_now (EV_P) 1896ev_now (EV_P) EV_THROW
652{ 1897{
653 return ev_rt_now; 1898 return ev_rt_now;
654} 1899}
655#endif 1900#endif
656 1901
657void 1902void
658ev_sleep (ev_tstamp delay) 1903ev_sleep (ev_tstamp delay) EV_THROW
659{ 1904{
660 if (delay > 0.) 1905 if (delay > 0.)
661 { 1906 {
662#if EV_USE_NANOSLEEP 1907#if EV_USE_NANOSLEEP
663 struct timespec ts; 1908 struct timespec ts;
664 1909
665 ts.tv_sec = (time_t)delay; 1910 EV_TS_SET (ts, delay);
666 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
667
668 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
669#elif defined(_WIN32) 1912#elif defined _WIN32
1913 /* maybe this should round up, as ms is very low resolution */
1914 /* compared to select (µs) or nanosleep (ns) */
670 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
671#else 1916#else
672 struct timeval tv; 1917 struct timeval tv;
673
674 tv.tv_sec = (time_t)delay;
675 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
676 1918
677 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1919 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
678 /* something not guaranteed by newer posix versions, but guaranteed */ 1920 /* something not guaranteed by newer posix versions, but guaranteed */
679 /* by older ones */ 1921 /* by older ones */
1922 EV_TV_SET (tv, delay);
680 select (0, 0, 0, 0, &tv); 1923 select (0, 0, 0, 0, &tv);
681#endif 1924#endif
682 } 1925 }
683} 1926}
684 1927
685/*****************************************************************************/ 1928/*****************************************************************************/
686 1929
687#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1930#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
688 1931
689/* find a suitable new size for the given array, */ 1932/* find a suitable new size for the given array, */
690/* hopefully by rounding to a ncie-to-malloc size */ 1933/* hopefully by rounding to a nice-to-malloc size */
691inline_size int 1934inline_size int
692array_nextsize (int elem, int cur, int cnt) 1935array_nextsize (int elem, int cur, int cnt)
693{ 1936{
694 int ncur = cur + 1; 1937 int ncur = cur + 1;
695 1938
696 do 1939 do
697 ncur <<= 1; 1940 ncur <<= 1;
698 while (cnt > ncur); 1941 while (cnt > ncur);
699 1942
700 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1943 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
701 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1944 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
702 { 1945 {
703 ncur *= elem; 1946 ncur *= elem;
704 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1947 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
705 ncur = ncur - sizeof (void *) * 4; 1948 ncur = ncur - sizeof (void *) * 4;
… …
707 } 1950 }
708 1951
709 return ncur; 1952 return ncur;
710} 1953}
711 1954
712static noinline void * 1955noinline ecb_cold
1956static void *
713array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
714{ 1958{
715 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
716 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
717} 1961}
… …
720 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
721 1965
722#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
723 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
724 { \ 1968 { \
725 int ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
726 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
727 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
728 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
729 } 1973 }
730 1974
… …
742 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
743 1987
744/*****************************************************************************/ 1988/*****************************************************************************/
745 1989
746/* dummy callback for pending events */ 1990/* dummy callback for pending events */
747static void noinline 1991noinline
1992static void
748pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
749{ 1994{
750} 1995}
751 1996
752void noinline 1997noinline
1998void
753ev_feed_event (EV_P_ void *w, int revents) 1999ev_feed_event (EV_P_ void *w, int revents) EV_THROW
754{ 2000{
755 W w_ = (W)w; 2001 W w_ = (W)w;
756 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
757 2003
758 if (expect_false (w_->pending)) 2004 if (expect_false (w_->pending))
… …
762 w_->pending = ++pendingcnt [pri]; 2008 w_->pending = ++pendingcnt [pri];
763 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2009 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
764 pendings [pri][w_->pending - 1].w = w_; 2010 pendings [pri][w_->pending - 1].w = w_;
765 pendings [pri][w_->pending - 1].events = revents; 2011 pendings [pri][w_->pending - 1].events = revents;
766 } 2012 }
2013
2014 pendingpri = NUMPRI - 1;
767} 2015}
768 2016
769inline_speed void 2017inline_speed void
770feed_reverse (EV_P_ W w) 2018feed_reverse (EV_P_ W w)
771{ 2019{
… …
791} 2039}
792 2040
793/*****************************************************************************/ 2041/*****************************************************************************/
794 2042
795inline_speed void 2043inline_speed void
796fd_event_nc (EV_P_ int fd, int revents) 2044fd_event_nocheck (EV_P_ int fd, int revents)
797{ 2045{
798 ANFD *anfd = anfds + fd; 2046 ANFD *anfd = anfds + fd;
799 ev_io *w; 2047 ev_io *w;
800 2048
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2049 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
813fd_event (EV_P_ int fd, int revents) 2061fd_event (EV_P_ int fd, int revents)
814{ 2062{
815 ANFD *anfd = anfds + fd; 2063 ANFD *anfd = anfds + fd;
816 2064
817 if (expect_true (!anfd->reify)) 2065 if (expect_true (!anfd->reify))
818 fd_event_nc (EV_A_ fd, revents); 2066 fd_event_nocheck (EV_A_ fd, revents);
819} 2067}
820 2068
821void 2069void
822ev_feed_fd_event (EV_P_ int fd, int revents) 2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
823{ 2071{
824 if (fd >= 0 && fd < anfdmax) 2072 if (fd >= 0 && fd < anfdmax)
825 fd_event_nc (EV_A_ fd, revents); 2073 fd_event_nocheck (EV_A_ fd, revents);
826} 2074}
827 2075
828/* make sure the external fd watch events are in-sync */ 2076/* make sure the external fd watch events are in-sync */
829/* with the kernel/libev internal state */ 2077/* with the kernel/libev internal state */
830inline_size void 2078inline_size void
831fd_reify (EV_P) 2079fd_reify (EV_P)
832{ 2080{
833 int i; 2081 int i;
834 2082
2083#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2084 for (i = 0; i < fdchangecnt; ++i)
2085 {
2086 int fd = fdchanges [i];
2087 ANFD *anfd = anfds + fd;
2088
2089 if (anfd->reify & EV__IOFDSET && anfd->head)
2090 {
2091 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2092
2093 if (handle != anfd->handle)
2094 {
2095 unsigned long arg;
2096
2097 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2098
2099 /* handle changed, but fd didn't - we need to do it in two steps */
2100 backend_modify (EV_A_ fd, anfd->events, 0);
2101 anfd->events = 0;
2102 anfd->handle = handle;
2103 }
2104 }
2105 }
2106#endif
2107
835 for (i = 0; i < fdchangecnt; ++i) 2108 for (i = 0; i < fdchangecnt; ++i)
836 { 2109 {
837 int fd = fdchanges [i]; 2110 int fd = fdchanges [i];
838 ANFD *anfd = anfds + fd; 2111 ANFD *anfd = anfds + fd;
839 ev_io *w; 2112 ev_io *w;
840 2113
841 unsigned char events = 0; 2114 unsigned char o_events = anfd->events;
2115 unsigned char o_reify = anfd->reify;
842 2116
843 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2117 anfd->reify = 0;
844 events |= (unsigned char)w->events;
845 2118
846#if EV_SELECT_IS_WINSOCKET 2119 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
847 if (events)
848 { 2120 {
849 unsigned long arg; 2121 anfd->events = 0;
850 #ifdef EV_FD_TO_WIN32_HANDLE 2122
851 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2123 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
852 #else 2124 anfd->events |= (unsigned char)w->events;
853 anfd->handle = _get_osfhandle (fd); 2125
854 #endif 2126 if (o_events != anfd->events)
855 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2127 o_reify = EV__IOFDSET; /* actually |= */
856 } 2128 }
857#endif
858 2129
859 { 2130 if (o_reify & EV__IOFDSET)
860 unsigned char o_events = anfd->events;
861 unsigned char o_reify = anfd->reify;
862
863 anfd->reify = 0;
864 anfd->events = events;
865
866 if (o_events != events || o_reify & EV__IOFDSET)
867 backend_modify (EV_A_ fd, o_events, events); 2131 backend_modify (EV_A_ fd, o_events, anfd->events);
868 }
869 } 2132 }
870 2133
871 fdchangecnt = 0; 2134 fdchangecnt = 0;
872} 2135}
873 2136
874/* something about the given fd changed */ 2137/* something about the given fd changed */
875inline_size void 2138inline_size
2139void
876fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
877{ 2141{
878 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
879 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
880 2144
… …
885 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
886 } 2150 }
887} 2151}
888 2152
889/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2153/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
890inline_speed void 2154inline_speed ecb_cold void
891fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
892{ 2156{
893 ev_io *w; 2157 ev_io *w;
894 2158
895 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
897 ev_io_stop (EV_A_ w); 2161 ev_io_stop (EV_A_ w);
898 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2162 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
899 } 2163 }
900} 2164}
901 2165
902/* check whether the given fd is atcually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
903inline_size int 2167inline_size ecb_cold int
904fd_valid (int fd) 2168fd_valid (int fd)
905{ 2169{
906#ifdef _WIN32 2170#ifdef _WIN32
907 return _get_osfhandle (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
908#else 2172#else
909 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
910#endif 2174#endif
911} 2175}
912 2176
913/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
914static void noinline 2178noinline ecb_cold
2179static void
915fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
916{ 2181{
917 int fd; 2182 int fd;
918 2183
919 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
921 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
922 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
923} 2188}
924 2189
925/* called on ENOMEM in select/poll to kill some fds and retry */ 2190/* called on ENOMEM in select/poll to kill some fds and retry */
926static void noinline 2191noinline ecb_cold
2192static void
927fd_enomem (EV_P) 2193fd_enomem (EV_P)
928{ 2194{
929 int fd; 2195 int fd;
930 2196
931 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
932 if (anfds [fd].events) 2198 if (anfds [fd].events)
933 { 2199 {
934 fd_kill (EV_A_ fd); 2200 fd_kill (EV_A_ fd);
935 return; 2201 break;
936 } 2202 }
937} 2203}
938 2204
939/* usually called after fork if backend needs to re-arm all fds from scratch */ 2205/* usually called after fork if backend needs to re-arm all fds from scratch */
940static void noinline 2206noinline
2207static void
941fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
942{ 2209{
943 int fd; 2210 int fd;
944 2211
945 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
949 anfds [fd].emask = 0; 2216 anfds [fd].emask = 0;
950 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2217 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
951 } 2218 }
952} 2219}
953 2220
2221/* used to prepare libev internal fd's */
2222/* this is not fork-safe */
2223inline_speed void
2224fd_intern (int fd)
2225{
2226#ifdef _WIN32
2227 unsigned long arg = 1;
2228 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2229#else
2230 fcntl (fd, F_SETFD, FD_CLOEXEC);
2231 fcntl (fd, F_SETFL, O_NONBLOCK);
2232#endif
2233}
2234
954/*****************************************************************************/ 2235/*****************************************************************************/
955 2236
956/* 2237/*
957 * the heap functions want a real array index. array index 0 uis guaranteed to not 2238 * the heap functions want a real array index. array index 0 is guaranteed to not
958 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2239 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
959 * the branching factor of the d-tree. 2240 * the branching factor of the d-tree.
960 */ 2241 */
961 2242
962/* 2243/*
… …
1030 2311
1031 for (;;) 2312 for (;;)
1032 { 2313 {
1033 int c = k << 1; 2314 int c = k << 1;
1034 2315
1035 if (c > N + HEAP0 - 1) 2316 if (c >= N + HEAP0)
1036 break; 2317 break;
1037 2318
1038 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2319 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1039 ? 1 : 0; 2320 ? 1 : 0;
1040 2321
… …
1076 2357
1077/* move an element suitably so it is in a correct place */ 2358/* move an element suitably so it is in a correct place */
1078inline_size void 2359inline_size void
1079adjustheap (ANHE *heap, int N, int k) 2360adjustheap (ANHE *heap, int N, int k)
1080{ 2361{
1081 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2362 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1082 upheap (heap, k); 2363 upheap (heap, k);
1083 else 2364 else
1084 downheap (heap, N, k); 2365 downheap (heap, N, k);
1085} 2366}
1086 2367
… …
1099/*****************************************************************************/ 2380/*****************************************************************************/
1100 2381
1101/* associate signal watchers to a signal signal */ 2382/* associate signal watchers to a signal signal */
1102typedef struct 2383typedef struct
1103{ 2384{
2385 EV_ATOMIC_T pending;
2386#if EV_MULTIPLICITY
2387 EV_P;
2388#endif
1104 WL head; 2389 WL head;
1105 EV_ATOMIC_T gotsig;
1106} ANSIG; 2390} ANSIG;
1107 2391
1108static ANSIG *signals; 2392static ANSIG signals [EV_NSIG - 1];
1109static int signalmax;
1110
1111static EV_ATOMIC_T gotsig;
1112 2393
1113/*****************************************************************************/ 2394/*****************************************************************************/
1114 2395
1115/* used to prepare libev internal fd's */ 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1116/* this is not fork-safe */ 2397
2398noinline ecb_cold
2399static void
2400evpipe_init (EV_P)
2401{
2402 if (!ev_is_active (&pipe_w))
2403 {
2404 int fds [2];
2405
2406# if EV_USE_EVENTFD
2407 fds [0] = -1;
2408 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2409 if (fds [1] < 0 && errno == EINVAL)
2410 fds [1] = eventfd (0, 0);
2411
2412 if (fds [1] < 0)
2413# endif
2414 {
2415 while (pipe (fds))
2416 ev_syserr ("(libev) error creating signal/async pipe");
2417
2418 fd_intern (fds [0]);
2419 }
2420
2421 evpipe [0] = fds [0];
2422
2423 if (evpipe [1] < 0)
2424 evpipe [1] = fds [1]; /* first call, set write fd */
2425 else
2426 {
2427 /* on subsequent calls, do not change evpipe [1] */
2428 /* so that evpipe_write can always rely on its value. */
2429 /* this branch does not do anything sensible on windows, */
2430 /* so must not be executed on windows */
2431
2432 dup2 (fds [1], evpipe [1]);
2433 close (fds [1]);
2434 }
2435
2436 fd_intern (evpipe [1]);
2437
2438 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2439 ev_io_start (EV_A_ &pipe_w);
2440 ev_unref (EV_A); /* watcher should not keep loop alive */
2441 }
2442}
2443
1117inline_speed void 2444inline_speed void
1118fd_intern (int fd) 2445evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1119{ 2446{
1120#ifdef _WIN32 2447 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1121 unsigned long arg = 1;
1122 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1123#else
1124 fcntl (fd, F_SETFD, FD_CLOEXEC);
1125 fcntl (fd, F_SETFL, O_NONBLOCK);
1126#endif
1127}
1128 2448
1129static void noinline 2449 if (expect_true (*flag))
1130evpipe_init (EV_P) 2450 return;
1131{ 2451
1132 if (!ev_is_active (&pipe_w)) 2452 *flag = 1;
2453 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2454
2455 pipe_write_skipped = 1;
2456
2457 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2458
2459 if (pipe_write_wanted)
1133 { 2460 {
2461 int old_errno;
2462
2463 pipe_write_skipped = 0;
2464 ECB_MEMORY_FENCE_RELEASE;
2465
2466 old_errno = errno; /* save errno because write will clobber it */
2467
1134#if EV_USE_EVENTFD 2468#if EV_USE_EVENTFD
1135 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2469 if (evpipe [0] < 0)
1136 if (evfd < 0 && errno == EINVAL)
1137 evfd = eventfd (0, 0);
1138
1139 if (evfd >= 0)
1140 { 2470 {
1141 evpipe [0] = -1; 2471 uint64_t counter = 1;
1142 fd_intern (evfd); /* doing it twice doesn't hurt */ 2472 write (evpipe [1], &counter, sizeof (uint64_t));
1143 ev_io_set (&pipe_w, evfd, EV_READ);
1144 } 2473 }
1145 else 2474 else
1146#endif 2475#endif
1147 { 2476 {
1148 while (pipe (evpipe)) 2477#ifdef _WIN32
1149 ev_syserr ("(libev) error creating signal/async pipe"); 2478 WSABUF buf;
1150 2479 DWORD sent;
1151 fd_intern (evpipe [0]); 2480 buf.buf = &buf;
1152 fd_intern (evpipe [1]); 2481 buf.len = 1;
1153 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2482 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2483#else
2484 write (evpipe [1], &(evpipe [1]), 1);
2485#endif
1154 } 2486 }
1155
1156 ev_io_start (EV_A_ &pipe_w);
1157 ev_unref (EV_A); /* watcher should not keep loop alive */
1158 }
1159}
1160
1161inline_size void
1162evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1163{
1164 if (!*flag)
1165 {
1166 int old_errno = errno; /* save errno because write might clobber it */
1167
1168 *flag = 1;
1169
1170#if EV_USE_EVENTFD
1171 if (evfd >= 0)
1172 {
1173 uint64_t counter = 1;
1174 write (evfd, &counter, sizeof (uint64_t));
1175 }
1176 else
1177#endif
1178 write (evpipe [1], &old_errno, 1);
1179 2487
1180 errno = old_errno; 2488 errno = old_errno;
1181 } 2489 }
1182} 2490}
1183 2491
1184/* called whenever the libev signal pipe */ 2492/* called whenever the libev signal pipe */
1185/* got some events (signal, async) */ 2493/* got some events (signal, async) */
1186static void 2494static void
1187pipecb (EV_P_ ev_io *iow, int revents) 2495pipecb (EV_P_ ev_io *iow, int revents)
1188{ 2496{
2497 int i;
2498
2499 if (revents & EV_READ)
2500 {
1189#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1190 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1191 { 2503 {
1192 uint64_t counter; 2504 uint64_t counter;
1193 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1194 } 2506 }
1195 else 2507 else
1196#endif 2508#endif
1197 { 2509 {
1198 char dummy; 2510 char dummy[4];
2511#ifdef _WIN32
2512 WSABUF buf;
2513 DWORD recvd;
2514 DWORD flags = 0;
2515 buf.buf = dummy;
2516 buf.len = sizeof (dummy);
2517 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2518#else
1199 read (evpipe [0], &dummy, 1); 2519 read (evpipe [0], &dummy, sizeof (dummy));
2520#endif
2521 }
2522 }
2523
2524 pipe_write_skipped = 0;
2525
2526 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2527
2528#if EV_SIGNAL_ENABLE
2529 if (sig_pending)
1200 } 2530 {
2531 sig_pending = 0;
1201 2532
1202 if (gotsig && ev_is_default_loop (EV_A)) 2533 ECB_MEMORY_FENCE;
1203 {
1204 int signum;
1205 gotsig = 0;
1206 2534
1207 for (signum = signalmax; signum--; ) 2535 for (i = EV_NSIG - 1; i--; )
1208 if (signals [signum].gotsig) 2536 if (expect_false (signals [i].pending))
1209 ev_feed_signal_event (EV_A_ signum + 1); 2537 ev_feed_signal_event (EV_A_ i + 1);
1210 } 2538 }
2539#endif
1211 2540
1212#if EV_ASYNC_ENABLE 2541#if EV_ASYNC_ENABLE
1213 if (gotasync) 2542 if (async_pending)
1214 { 2543 {
1215 int i; 2544 async_pending = 0;
1216 gotasync = 0; 2545
2546 ECB_MEMORY_FENCE;
1217 2547
1218 for (i = asynccnt; i--; ) 2548 for (i = asynccnt; i--; )
1219 if (asyncs [i]->sent) 2549 if (asyncs [i]->sent)
1220 { 2550 {
1221 asyncs [i]->sent = 0; 2551 asyncs [i]->sent = 0;
2552 ECB_MEMORY_FENCE_RELEASE;
1222 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2553 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1223 } 2554 }
1224 } 2555 }
1225#endif 2556#endif
1226} 2557}
1227 2558
1228/*****************************************************************************/ 2559/*****************************************************************************/
1229 2560
2561void
2562ev_feed_signal (int signum) EV_THROW
2563{
2564#if EV_MULTIPLICITY
2565 EV_P;
2566 ECB_MEMORY_FENCE_ACQUIRE;
2567 EV_A = signals [signum - 1].loop;
2568
2569 if (!EV_A)
2570 return;
2571#endif
2572
2573 signals [signum - 1].pending = 1;
2574 evpipe_write (EV_A_ &sig_pending);
2575}
2576
1230static void 2577static void
1231ev_sighandler (int signum) 2578ev_sighandler (int signum)
1232{ 2579{
2580#ifdef _WIN32
2581 signal (signum, ev_sighandler);
2582#endif
2583
2584 ev_feed_signal (signum);
2585}
2586
2587noinline
2588void
2589ev_feed_signal_event (EV_P_ int signum) EV_THROW
2590{
2591 WL w;
2592
2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2594 return;
2595
2596 --signum;
2597
1233#if EV_MULTIPLICITY 2598#if EV_MULTIPLICITY
1234 struct ev_loop *loop = &default_loop_struct; 2599 /* it is permissible to try to feed a signal to the wrong loop */
1235#endif 2600 /* or, likely more useful, feeding a signal nobody is waiting for */
1236 2601
1237#if _WIN32 2602 if (expect_false (signals [signum].loop != EV_A))
1238 signal (signum, ev_sighandler);
1239#endif
1240
1241 signals [signum - 1].gotsig = 1;
1242 evpipe_write (EV_A_ &gotsig);
1243}
1244
1245void noinline
1246ev_feed_signal_event (EV_P_ int signum)
1247{
1248 WL w;
1249
1250#if EV_MULTIPLICITY
1251 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1252#endif
1253
1254 --signum;
1255
1256 if (signum < 0 || signum >= signalmax)
1257 return; 2603 return;
2604#endif
1258 2605
1259 signals [signum].gotsig = 0; 2606 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE;
1260 2608
1261 for (w = signals [signum].head; w; w = w->next) 2609 for (w = signals [signum].head; w; w = w->next)
1262 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1263} 2611}
1264 2612
1265#if EV_USE_SIGNALFD 2613#if EV_USE_SIGNALFD
1266static void 2614static void
1267sigfdcb (EV_P_ ev_io *iow, int revents) 2615sigfdcb (EV_P_ ev_io *iow, int revents)
1268{ 2616{
1269 struct signalfd_siginfo si[4], *sip; 2617 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1270 2618
1271 for (;;) 2619 for (;;)
1272 { 2620 {
1273 ssize_t res = read (sigfd, si, sizeof (si)); 2621 ssize_t res = read (sigfd, si, sizeof (si));
1274 2622
… …
1280 break; 2628 break;
1281 } 2629 }
1282} 2630}
1283#endif 2631#endif
1284 2632
2633#endif
2634
1285/*****************************************************************************/ 2635/*****************************************************************************/
1286 2636
2637#if EV_CHILD_ENABLE
1287static WL childs [EV_PID_HASHSIZE]; 2638static WL childs [EV_PID_HASHSIZE];
1288
1289#ifndef _WIN32
1290 2639
1291static ev_signal childev; 2640static ev_signal childev;
1292 2641
1293#ifndef WIFCONTINUED 2642#ifndef WIFCONTINUED
1294# define WIFCONTINUED(status) 0 2643# define WIFCONTINUED(status) 0
… …
1299child_reap (EV_P_ int chain, int pid, int status) 2648child_reap (EV_P_ int chain, int pid, int status)
1300{ 2649{
1301 ev_child *w; 2650 ev_child *w;
1302 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2651 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1303 2652
1304 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2653 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1305 { 2654 {
1306 if ((w->pid == pid || !w->pid) 2655 if ((w->pid == pid || !w->pid)
1307 && (!traced || (w->flags & 1))) 2656 && (!traced || (w->flags & 1)))
1308 { 2657 {
1309 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2658 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1334 /* make sure we are called again until all children have been reaped */ 2683 /* make sure we are called again until all children have been reaped */
1335 /* we need to do it this way so that the callback gets called before we continue */ 2684 /* we need to do it this way so that the callback gets called before we continue */
1336 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2685 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1337 2686
1338 child_reap (EV_A_ pid, pid, status); 2687 child_reap (EV_A_ pid, pid, status);
1339 if (EV_PID_HASHSIZE > 1) 2688 if ((EV_PID_HASHSIZE) > 1)
1340 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2689 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1341} 2690}
1342 2691
1343#endif 2692#endif
1344 2693
1345/*****************************************************************************/ 2694/*****************************************************************************/
1346 2695
2696#if EV_USE_IOCP
2697# include "ev_iocp.c"
2698#endif
1347#if EV_USE_PORT 2699#if EV_USE_PORT
1348# include "ev_port.c" 2700# include "ev_port.c"
1349#endif 2701#endif
1350#if EV_USE_KQUEUE 2702#if EV_USE_KQUEUE
1351# include "ev_kqueue.c" 2703# include "ev_kqueue.c"
… …
1358#endif 2710#endif
1359#if EV_USE_SELECT 2711#if EV_USE_SELECT
1360# include "ev_select.c" 2712# include "ev_select.c"
1361#endif 2713#endif
1362 2714
1363int 2715ecb_cold int
1364ev_version_major (void) 2716ev_version_major (void) EV_THROW
1365{ 2717{
1366 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
1367} 2719}
1368 2720
1369int 2721ecb_cold int
1370ev_version_minor (void) 2722ev_version_minor (void) EV_THROW
1371{ 2723{
1372 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
1373} 2725}
1374 2726
1375/* return true if we are running with elevated privileges and should ignore env variables */ 2727/* return true if we are running with elevated privileges and should ignore env variables */
1376int inline_size 2728inline_size ecb_cold int
1377enable_secure (void) 2729enable_secure (void)
1378{ 2730{
1379#ifdef _WIN32 2731#ifdef _WIN32
1380 return 0; 2732 return 0;
1381#else 2733#else
1382 return getuid () != geteuid () 2734 return getuid () != geteuid ()
1383 || getgid () != getegid (); 2735 || getgid () != getegid ();
1384#endif 2736#endif
1385} 2737}
1386 2738
2739ecb_cold
1387unsigned int 2740unsigned int
1388ev_supported_backends (void) 2741ev_supported_backends (void) EV_THROW
1389{ 2742{
1390 unsigned int flags = 0; 2743 unsigned int flags = 0;
1391 2744
1392 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1393 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1396 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1397 2750
1398 return flags; 2751 return flags;
1399} 2752}
1400 2753
2754ecb_cold
1401unsigned int 2755unsigned int
1402ev_recommended_backends (void) 2756ev_recommended_backends (void) EV_THROW
1403{ 2757{
1404 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
1405 2759
1406#ifndef __NetBSD__ 2760#ifndef __NetBSD__
1407 /* kqueue is borked on everything but netbsd apparently */ 2761 /* kqueue is borked on everything but netbsd apparently */
… …
1411#ifdef __APPLE__ 2765#ifdef __APPLE__
1412 /* only select works correctly on that "unix-certified" platform */ 2766 /* only select works correctly on that "unix-certified" platform */
1413 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2767 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1414 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2768 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1415#endif 2769#endif
2770#ifdef __FreeBSD__
2771 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2772#endif
1416 2773
1417 return flags; 2774 return flags;
1418} 2775}
1419 2776
2777ecb_cold
1420unsigned int 2778unsigned int
1421ev_embeddable_backends (void) 2779ev_embeddable_backends (void) EV_THROW
1422{ 2780{
1423 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1424 2782
1425 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2783 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1426 /* please fix it and tell me how to detect the fix */ 2784 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1427 flags &= ~EVBACKEND_EPOLL; 2785 flags &= ~EVBACKEND_EPOLL;
1428 2786
1429 return flags; 2787 return flags;
1430} 2788}
1431 2789
1432unsigned int 2790unsigned int
1433ev_backend (EV_P) 2791ev_backend (EV_P) EV_THROW
1434{ 2792{
1435 return backend; 2793 return backend;
1436} 2794}
1437 2795
1438#if EV_MINIMAL < 2 2796#if EV_FEATURE_API
1439unsigned int 2797unsigned int
1440ev_loop_count (EV_P) 2798ev_iteration (EV_P) EV_THROW
1441{ 2799{
1442 return loop_count; 2800 return loop_count;
1443} 2801}
1444 2802
1445unsigned int 2803unsigned int
1446ev_loop_depth (EV_P) 2804ev_depth (EV_P) EV_THROW
1447{ 2805{
1448 return loop_depth; 2806 return loop_depth;
1449} 2807}
1450 2808
1451void 2809void
1452ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2810ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1453{ 2811{
1454 io_blocktime = interval; 2812 io_blocktime = interval;
1455} 2813}
1456 2814
1457void 2815void
1458ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2816ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1459{ 2817{
1460 timeout_blocktime = interval; 2818 timeout_blocktime = interval;
1461} 2819}
1462 2820
1463void 2821void
1464ev_set_userdata (EV_P_ void *data) 2822ev_set_userdata (EV_P_ void *data) EV_THROW
1465{ 2823{
1466 userdata = data; 2824 userdata = data;
1467} 2825}
1468 2826
1469void * 2827void *
1470ev_userdata (EV_P) 2828ev_userdata (EV_P) EV_THROW
1471{ 2829{
1472 return userdata; 2830 return userdata;
1473} 2831}
1474 2832
2833void
1475void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2834ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1476{ 2835{
1477 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
1478} 2837}
1479 2838
2839void
1480void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2840ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1481{ 2841{
1482 release_cb = release; 2842 release_cb = release;
1483 acquire_cb = acquire; 2843 acquire_cb = acquire;
1484} 2844}
1485#endif 2845#endif
1486 2846
1487/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
1488static void noinline 2848noinline ecb_cold
2849static void
1489loop_init (EV_P_ unsigned int flags) 2850loop_init (EV_P_ unsigned int flags) EV_THROW
1490{ 2851{
1491 if (!backend) 2852 if (!backend)
1492 { 2853 {
2854 origflags = flags;
2855
1493#if EV_USE_REALTIME 2856#if EV_USE_REALTIME
1494 if (!have_realtime) 2857 if (!have_realtime)
1495 { 2858 {
1496 struct timespec ts; 2859 struct timespec ts;
1497 2860
… …
1508 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2871 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1509 have_monotonic = 1; 2872 have_monotonic = 1;
1510 } 2873 }
1511#endif 2874#endif
1512 2875
1513 ev_rt_now = ev_time ();
1514 mn_now = get_clock ();
1515 now_floor = mn_now;
1516 rtmn_diff = ev_rt_now - mn_now;
1517#if EV_MINIMAL < 2
1518 invoke_cb = ev_invoke_pending;
1519#endif
1520
1521 io_blocktime = 0.;
1522 timeout_blocktime = 0.;
1523 backend = 0;
1524 backend_fd = -1;
1525 gotasync = 0;
1526#if EV_USE_INOTIFY
1527 fs_fd = -2;
1528#endif
1529#if EV_USE_SIGNALFD
1530 sigfd = -2;
1531#endif
1532
1533 /* pid check not overridable via env */ 2876 /* pid check not overridable via env */
1534#ifndef _WIN32 2877#ifndef _WIN32
1535 if (flags & EVFLAG_FORKCHECK) 2878 if (flags & EVFLAG_FORKCHECK)
1536 curpid = getpid (); 2879 curpid = getpid ();
1537#endif 2880#endif
… …
1539 if (!(flags & EVFLAG_NOENV) 2882 if (!(flags & EVFLAG_NOENV)
1540 && !enable_secure () 2883 && !enable_secure ()
1541 && getenv ("LIBEV_FLAGS")) 2884 && getenv ("LIBEV_FLAGS"))
1542 flags = atoi (getenv ("LIBEV_FLAGS")); 2885 flags = atoi (getenv ("LIBEV_FLAGS"));
1543 2886
1544 if (!(flags & 0x0000ffffU)) 2887 ev_rt_now = ev_time ();
2888 mn_now = get_clock ();
2889 now_floor = mn_now;
2890 rtmn_diff = ev_rt_now - mn_now;
2891#if EV_FEATURE_API
2892 invoke_cb = ev_invoke_pending;
2893#endif
2894
2895 io_blocktime = 0.;
2896 timeout_blocktime = 0.;
2897 backend = 0;
2898 backend_fd = -1;
2899 sig_pending = 0;
2900#if EV_ASYNC_ENABLE
2901 async_pending = 0;
2902#endif
2903 pipe_write_skipped = 0;
2904 pipe_write_wanted = 0;
2905 evpipe [0] = -1;
2906 evpipe [1] = -1;
2907#if EV_USE_INOTIFY
2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2909#endif
2910#if EV_USE_SIGNALFD
2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2912#endif
2913
2914 if (!(flags & EVBACKEND_MASK))
1545 flags |= ev_recommended_backends (); 2915 flags |= ev_recommended_backends ();
1546 2916
2917#if EV_USE_IOCP
2918 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2919#endif
1547#if EV_USE_PORT 2920#if EV_USE_PORT
1548 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2921 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1549#endif 2922#endif
1550#if EV_USE_KQUEUE 2923#if EV_USE_KQUEUE
1551 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2924 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1560 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2933 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1561#endif 2934#endif
1562 2935
1563 ev_prepare_init (&pending_w, pendingcb); 2936 ev_prepare_init (&pending_w, pendingcb);
1564 2937
2938#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1565 ev_init (&pipe_w, pipecb); 2939 ev_init (&pipe_w, pipecb);
1566 ev_set_priority (&pipe_w, EV_MAXPRI); 2940 ev_set_priority (&pipe_w, EV_MAXPRI);
2941#endif
1567 } 2942 }
1568} 2943}
1569 2944
1570/* free up a loop structure */ 2945/* free up a loop structure */
1571static void noinline 2946ecb_cold
2947void
1572loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
1573{ 2949{
1574 int i; 2950 int i;
2951
2952#if EV_MULTIPLICITY
2953 /* mimic free (0) */
2954 if (!EV_A)
2955 return;
2956#endif
2957
2958#if EV_CLEANUP_ENABLE
2959 /* queue cleanup watchers (and execute them) */
2960 if (expect_false (cleanupcnt))
2961 {
2962 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2963 EV_INVOKE_PENDING;
2964 }
2965#endif
2966
2967#if EV_CHILD_ENABLE
2968 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2969 {
2970 ev_ref (EV_A); /* child watcher */
2971 ev_signal_stop (EV_A_ &childev);
2972 }
2973#endif
1575 2974
1576 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
1577 { 2976 {
1578 /*ev_ref (EV_A);*/ 2977 /*ev_ref (EV_A);*/
1579 /*ev_io_stop (EV_A_ &pipe_w);*/ 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
1580 2979
1581#if EV_USE_EVENTFD 2980 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1582 if (evfd >= 0) 2981 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1583 close (evfd);
1584#endif
1585
1586 if (evpipe [0] >= 0)
1587 {
1588 close (evpipe [0]);
1589 close (evpipe [1]);
1590 }
1591 } 2982 }
1592 2983
1593#if EV_USE_SIGNALFD 2984#if EV_USE_SIGNALFD
1594 if (ev_is_active (&sigfd_w)) 2985 if (ev_is_active (&sigfd_w))
1595 {
1596 /*ev_ref (EV_A);*/
1597 /*ev_io_stop (EV_A_ &sigfd_w);*/
1598
1599 close (sigfd); 2986 close (sigfd);
1600 }
1601#endif 2987#endif
1602 2988
1603#if EV_USE_INOTIFY 2989#if EV_USE_INOTIFY
1604 if (fs_fd >= 0) 2990 if (fs_fd >= 0)
1605 close (fs_fd); 2991 close (fs_fd);
1606#endif 2992#endif
1607 2993
1608 if (backend_fd >= 0) 2994 if (backend_fd >= 0)
1609 close (backend_fd); 2995 close (backend_fd);
1610 2996
2997#if EV_USE_IOCP
2998 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2999#endif
1611#if EV_USE_PORT 3000#if EV_USE_PORT
1612 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3001 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1613#endif 3002#endif
1614#if EV_USE_KQUEUE 3003#if EV_USE_KQUEUE
1615 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3004 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1630#if EV_IDLE_ENABLE 3019#if EV_IDLE_ENABLE
1631 array_free (idle, [i]); 3020 array_free (idle, [i]);
1632#endif 3021#endif
1633 } 3022 }
1634 3023
1635 ev_free (anfds); anfdmax = 0; 3024 ev_free (anfds); anfds = 0; anfdmax = 0;
1636 3025
1637 /* have to use the microsoft-never-gets-it-right macro */ 3026 /* have to use the microsoft-never-gets-it-right macro */
1638 array_free (rfeed, EMPTY); 3027 array_free (rfeed, EMPTY);
1639 array_free (fdchange, EMPTY); 3028 array_free (fdchange, EMPTY);
1640 array_free (timer, EMPTY); 3029 array_free (timer, EMPTY);
… …
1642 array_free (periodic, EMPTY); 3031 array_free (periodic, EMPTY);
1643#endif 3032#endif
1644#if EV_FORK_ENABLE 3033#if EV_FORK_ENABLE
1645 array_free (fork, EMPTY); 3034 array_free (fork, EMPTY);
1646#endif 3035#endif
3036#if EV_CLEANUP_ENABLE
3037 array_free (cleanup, EMPTY);
3038#endif
1647 array_free (prepare, EMPTY); 3039 array_free (prepare, EMPTY);
1648 array_free (check, EMPTY); 3040 array_free (check, EMPTY);
1649#if EV_ASYNC_ENABLE 3041#if EV_ASYNC_ENABLE
1650 array_free (async, EMPTY); 3042 array_free (async, EMPTY);
1651#endif 3043#endif
1652 3044
1653 backend = 0; 3045 backend = 0;
3046
3047#if EV_MULTIPLICITY
3048 if (ev_is_default_loop (EV_A))
3049#endif
3050 ev_default_loop_ptr = 0;
3051#if EV_MULTIPLICITY
3052 else
3053 ev_free (EV_A);
3054#endif
1654} 3055}
1655 3056
1656#if EV_USE_INOTIFY 3057#if EV_USE_INOTIFY
1657inline_size void infy_fork (EV_P); 3058inline_size void infy_fork (EV_P);
1658#endif 3059#endif
… …
1671#endif 3072#endif
1672#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
1673 infy_fork (EV_A); 3074 infy_fork (EV_A);
1674#endif 3075#endif
1675 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1676 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
1677 { 3079 {
1678 /* this "locks" the handlers against writing to the pipe */ 3080 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1679 /* while we modify the fd vars */
1680 gotsig = 1;
1681#if EV_ASYNC_ENABLE
1682 gotasync = 1;
1683#endif
1684 3081
1685 ev_ref (EV_A); 3082 ev_ref (EV_A);
1686 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
1687 3084
1688#if EV_USE_EVENTFD
1689 if (evfd >= 0)
1690 close (evfd);
1691#endif
1692
1693 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
1694 { 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
1695 close (evpipe [0]);
1696 close (evpipe [1]);
1697 }
1698 3087
1699 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
1700 /* now iterate over everything, in case we missed something */ 3089 /* iterate over everything, in case we missed something before */
1701 pipecb (EV_A_ &pipe_w, EV_READ); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1702 } 3091 }
3092#endif
1703 3093
1704 postfork = 0; 3094 postfork = 0;
1705} 3095}
1706 3096
1707#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
1708 3098
3099ecb_cold
1709struct ev_loop * 3100struct ev_loop *
1710ev_loop_new (unsigned int flags) 3101ev_loop_new (unsigned int flags) EV_THROW
1711{ 3102{
1712 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1713 3104
1714 memset (loop, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
1715 loop_init (EV_A_ flags); 3106 loop_init (EV_A_ flags);
1716 3107
1717 if (ev_backend (EV_A)) 3108 if (ev_backend (EV_A))
1718 return loop; 3109 return EV_A;
1719 3110
3111 ev_free (EV_A);
1720 return 0; 3112 return 0;
1721} 3113}
1722 3114
1723void
1724ev_loop_destroy (EV_P)
1725{
1726 loop_destroy (EV_A);
1727 ev_free (loop);
1728}
1729
1730void
1731ev_loop_fork (EV_P)
1732{
1733 postfork = 1; /* must be in line with ev_default_fork */
1734}
1735#endif /* multiplicity */ 3115#endif /* multiplicity */
1736 3116
1737#if EV_VERIFY 3117#if EV_VERIFY
1738static void noinline 3118noinline ecb_cold
3119static void
1739verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
1740{ 3121{
1741 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3122 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1742 3123
1743 if (w->pending) 3124 if (w->pending)
1744 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3125 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1745} 3126}
1746 3127
1747static void noinline 3128noinline ecb_cold
3129static void
1748verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
1749{ 3131{
1750 int i; 3132 int i;
1751 3133
1752 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1757 3139
1758 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1759 } 3141 }
1760} 3142}
1761 3143
1762static void noinline 3144noinline ecb_cold
3145static void
1763array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
1764{ 3147{
1765 while (cnt--) 3148 while (cnt--)
1766 { 3149 {
1767 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1768 verify_watcher (EV_A_ ws [cnt]); 3151 verify_watcher (EV_A_ ws [cnt]);
1769 } 3152 }
1770} 3153}
1771#endif 3154#endif
1772 3155
1773#if EV_MINIMAL < 2 3156#if EV_FEATURE_API
1774void 3157void ecb_cold
1775ev_loop_verify (EV_P) 3158ev_verify (EV_P) EV_THROW
1776{ 3159{
1777#if EV_VERIFY 3160#if EV_VERIFY
1778 int i; 3161 int i;
1779 WL w; 3162 WL w, w2;
1780 3163
1781 assert (activecnt >= -1); 3164 assert (activecnt >= -1);
1782 3165
1783 assert (fdchangemax >= fdchangecnt); 3166 assert (fdchangemax >= fdchangecnt);
1784 for (i = 0; i < fdchangecnt; ++i) 3167 for (i = 0; i < fdchangecnt; ++i)
1785 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3168 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1786 3169
1787 assert (anfdmax >= 0); 3170 assert (anfdmax >= 0);
1788 for (i = 0; i < anfdmax; ++i) 3171 for (i = 0; i < anfdmax; ++i)
3172 {
3173 int j = 0;
3174
1789 for (w = anfds [i].head; w; w = w->next) 3175 for (w = w2 = anfds [i].head; w; w = w->next)
1790 { 3176 {
1791 verify_watcher (EV_A_ (W)w); 3177 verify_watcher (EV_A_ (W)w);
3178
3179 if (j++ & 1)
3180 {
3181 assert (("libev: io watcher list contains a loop", w != w2));
3182 w2 = w2->next;
3183 }
3184
1792 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3185 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1793 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3186 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1794 } 3187 }
3188 }
1795 3189
1796 assert (timermax >= timercnt); 3190 assert (timermax >= timercnt);
1797 verify_heap (EV_A_ timers, timercnt); 3191 verify_heap (EV_A_ timers, timercnt);
1798 3192
1799#if EV_PERIODIC_ENABLE 3193#if EV_PERIODIC_ENABLE
… …
1814#if EV_FORK_ENABLE 3208#if EV_FORK_ENABLE
1815 assert (forkmax >= forkcnt); 3209 assert (forkmax >= forkcnt);
1816 array_verify (EV_A_ (W *)forks, forkcnt); 3210 array_verify (EV_A_ (W *)forks, forkcnt);
1817#endif 3211#endif
1818 3212
3213#if EV_CLEANUP_ENABLE
3214 assert (cleanupmax >= cleanupcnt);
3215 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3216#endif
3217
1819#if EV_ASYNC_ENABLE 3218#if EV_ASYNC_ENABLE
1820 assert (asyncmax >= asynccnt); 3219 assert (asyncmax >= asynccnt);
1821 array_verify (EV_A_ (W *)asyncs, asynccnt); 3220 array_verify (EV_A_ (W *)asyncs, asynccnt);
1822#endif 3221#endif
1823 3222
3223#if EV_PREPARE_ENABLE
1824 assert (preparemax >= preparecnt); 3224 assert (preparemax >= preparecnt);
1825 array_verify (EV_A_ (W *)prepares, preparecnt); 3225 array_verify (EV_A_ (W *)prepares, preparecnt);
3226#endif
1826 3227
3228#if EV_CHECK_ENABLE
1827 assert (checkmax >= checkcnt); 3229 assert (checkmax >= checkcnt);
1828 array_verify (EV_A_ (W *)checks, checkcnt); 3230 array_verify (EV_A_ (W *)checks, checkcnt);
3231#endif
1829 3232
1830# if 0 3233# if 0
3234#if EV_CHILD_ENABLE
1831 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3235 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1832 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3236 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3237#endif
1833# endif 3238# endif
1834#endif 3239#endif
1835} 3240}
1836#endif 3241#endif
1837 3242
1838#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
1839struct ev_loop * 3245struct ev_loop *
1840ev_default_loop_init (unsigned int flags)
1841#else 3246#else
1842int 3247int
3248#endif
1843ev_default_loop (unsigned int flags) 3249ev_default_loop (unsigned int flags) EV_THROW
1844#endif
1845{ 3250{
1846 if (!ev_default_loop_ptr) 3251 if (!ev_default_loop_ptr)
1847 { 3252 {
1848#if EV_MULTIPLICITY 3253#if EV_MULTIPLICITY
1849 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3254 EV_P = ev_default_loop_ptr = &default_loop_struct;
1850#else 3255#else
1851 ev_default_loop_ptr = 1; 3256 ev_default_loop_ptr = 1;
1852#endif 3257#endif
1853 3258
1854 loop_init (EV_A_ flags); 3259 loop_init (EV_A_ flags);
1855 3260
1856 if (ev_backend (EV_A)) 3261 if (ev_backend (EV_A))
1857 { 3262 {
1858#ifndef _WIN32 3263#if EV_CHILD_ENABLE
1859 ev_signal_init (&childev, childcb, SIGCHLD); 3264 ev_signal_init (&childev, childcb, SIGCHLD);
1860 ev_set_priority (&childev, EV_MAXPRI); 3265 ev_set_priority (&childev, EV_MAXPRI);
1861 ev_signal_start (EV_A_ &childev); 3266 ev_signal_start (EV_A_ &childev);
1862 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3267 ev_unref (EV_A); /* child watcher should not keep loop alive */
1863#endif 3268#endif
… …
1868 3273
1869 return ev_default_loop_ptr; 3274 return ev_default_loop_ptr;
1870} 3275}
1871 3276
1872void 3277void
1873ev_default_destroy (void) 3278ev_loop_fork (EV_P) EV_THROW
1874{ 3279{
1875#if EV_MULTIPLICITY 3280 postfork = 1;
1876 struct ev_loop *loop = ev_default_loop_ptr;
1877#endif
1878
1879 ev_default_loop_ptr = 0;
1880
1881#ifndef _WIN32
1882 ev_ref (EV_A); /* child watcher */
1883 ev_signal_stop (EV_A_ &childev);
1884#endif
1885
1886 loop_destroy (EV_A);
1887}
1888
1889void
1890ev_default_fork (void)
1891{
1892#if EV_MULTIPLICITY
1893 struct ev_loop *loop = ev_default_loop_ptr;
1894#endif
1895
1896 postfork = 1; /* must be in line with ev_loop_fork */
1897} 3281}
1898 3282
1899/*****************************************************************************/ 3283/*****************************************************************************/
1900 3284
1901void 3285void
… …
1903{ 3287{
1904 EV_CB_INVOKE ((W)w, revents); 3288 EV_CB_INVOKE ((W)w, revents);
1905} 3289}
1906 3290
1907unsigned int 3291unsigned int
1908ev_pending_count (EV_P) 3292ev_pending_count (EV_P) EV_THROW
1909{ 3293{
1910 int pri; 3294 int pri;
1911 unsigned int count = 0; 3295 unsigned int count = 0;
1912 3296
1913 for (pri = NUMPRI; pri--; ) 3297 for (pri = NUMPRI; pri--; )
1914 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
1915 3299
1916 return count; 3300 return count;
1917} 3301}
1918 3302
1919void noinline 3303noinline
3304void
1920ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
1921{ 3306{
1922 int pri; 3307 pendingpri = NUMPRI;
1923 3308
1924 for (pri = NUMPRI; pri--; ) 3309 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3310 {
3311 --pendingpri;
3312
1925 while (pendingcnt [pri]) 3313 while (pendingcnt [pendingpri])
1926 { 3314 {
1927 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3315 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1928 3316
1929 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1930 /* ^ this is no longer true, as pending_w could be here */
1931
1932 p->w->pending = 0; 3317 p->w->pending = 0;
1933 EV_CB_INVOKE (p->w, p->events); 3318 EV_CB_INVOKE (p->w, p->events);
1934 EV_FREQUENT_CHECK; 3319 EV_FREQUENT_CHECK;
1935 } 3320 }
3321 }
1936} 3322}
1937 3323
1938#if EV_IDLE_ENABLE 3324#if EV_IDLE_ENABLE
1939/* make idle watchers pending. this handles the "call-idle */ 3325/* make idle watchers pending. this handles the "call-idle */
1940/* only when higher priorities are idle" logic */ 3326/* only when higher priorities are idle" logic */
… …
1992 EV_FREQUENT_CHECK; 3378 EV_FREQUENT_CHECK;
1993 feed_reverse (EV_A_ (W)w); 3379 feed_reverse (EV_A_ (W)w);
1994 } 3380 }
1995 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3381 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1996 3382
1997 feed_reverse_done (EV_A_ EV_TIMEOUT); 3383 feed_reverse_done (EV_A_ EV_TIMER);
1998 } 3384 }
1999} 3385}
2000 3386
2001#if EV_PERIODIC_ENABLE 3387#if EV_PERIODIC_ENABLE
3388
3389noinline
3390static void
3391periodic_recalc (EV_P_ ev_periodic *w)
3392{
3393 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3394 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3395
3396 /* the above almost always errs on the low side */
3397 while (at <= ev_rt_now)
3398 {
3399 ev_tstamp nat = at + w->interval;
3400
3401 /* when resolution fails us, we use ev_rt_now */
3402 if (expect_false (nat == at))
3403 {
3404 at = ev_rt_now;
3405 break;
3406 }
3407
3408 at = nat;
3409 }
3410
3411 ev_at (w) = at;
3412}
3413
2002/* make periodics pending */ 3414/* make periodics pending */
2003inline_size void 3415inline_size void
2004periodics_reify (EV_P) 3416periodics_reify (EV_P)
2005{ 3417{
2006 EV_FREQUENT_CHECK; 3418 EV_FREQUENT_CHECK;
2007 3419
2008 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3420 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2009 { 3421 {
2010 int feed_count = 0;
2011
2012 do 3422 do
2013 { 3423 {
2014 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3424 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2015 3425
2016 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3426 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2025 ANHE_at_cache (periodics [HEAP0]); 3435 ANHE_at_cache (periodics [HEAP0]);
2026 downheap (periodics, periodiccnt, HEAP0); 3436 downheap (periodics, periodiccnt, HEAP0);
2027 } 3437 }
2028 else if (w->interval) 3438 else if (w->interval)
2029 { 3439 {
2030 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3440 periodic_recalc (EV_A_ w);
2031 /* if next trigger time is not sufficiently in the future, put it there */
2032 /* this might happen because of floating point inexactness */
2033 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2034 {
2035 ev_at (w) += w->interval;
2036
2037 /* if interval is unreasonably low we might still have a time in the past */
2038 /* so correct this. this will make the periodic very inexact, but the user */
2039 /* has effectively asked to get triggered more often than possible */
2040 if (ev_at (w) < ev_rt_now)
2041 ev_at (w) = ev_rt_now;
2042 }
2043
2044 ANHE_at_cache (periodics [HEAP0]); 3441 ANHE_at_cache (periodics [HEAP0]);
2045 downheap (periodics, periodiccnt, HEAP0); 3442 downheap (periodics, periodiccnt, HEAP0);
2046 } 3443 }
2047 else 3444 else
2048 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3445 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2055 feed_reverse_done (EV_A_ EV_PERIODIC); 3452 feed_reverse_done (EV_A_ EV_PERIODIC);
2056 } 3453 }
2057} 3454}
2058 3455
2059/* simply recalculate all periodics */ 3456/* simply recalculate all periodics */
2060/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3457/* TODO: maybe ensure that at least one event happens when jumping forward? */
2061static void noinline 3458noinline ecb_cold
3459static void
2062periodics_reschedule (EV_P) 3460periodics_reschedule (EV_P)
2063{ 3461{
2064 int i; 3462 int i;
2065 3463
2066 /* adjust periodics after time jump */ 3464 /* adjust periodics after time jump */
… …
2069 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3467 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2070 3468
2071 if (w->reschedule_cb) 3469 if (w->reschedule_cb)
2072 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3470 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073 else if (w->interval) 3471 else if (w->interval)
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3472 periodic_recalc (EV_A_ w);
2075 3473
2076 ANHE_at_cache (periodics [i]); 3474 ANHE_at_cache (periodics [i]);
2077 } 3475 }
2078 3476
2079 reheap (periodics, periodiccnt); 3477 reheap (periodics, periodiccnt);
2080} 3478}
2081#endif 3479#endif
2082 3480
2083/* adjust all timers by a given offset */ 3481/* adjust all timers by a given offset */
2084static void noinline 3482noinline ecb_cold
3483static void
2085timers_reschedule (EV_P_ ev_tstamp adjust) 3484timers_reschedule (EV_P_ ev_tstamp adjust)
2086{ 3485{
2087 int i; 3486 int i;
2088 3487
2089 for (i = 0; i < timercnt; ++i) 3488 for (i = 0; i < timercnt; ++i)
… …
2093 ANHE_at_cache (*he); 3492 ANHE_at_cache (*he);
2094 } 3493 }
2095} 3494}
2096 3495
2097/* fetch new monotonic and realtime times from the kernel */ 3496/* fetch new monotonic and realtime times from the kernel */
2098/* also detetc if there was a timejump, and act accordingly */ 3497/* also detect if there was a timejump, and act accordingly */
2099inline_speed void 3498inline_speed void
2100time_update (EV_P_ ev_tstamp max_block) 3499time_update (EV_P_ ev_tstamp max_block)
2101{ 3500{
2102#if EV_USE_MONOTONIC 3501#if EV_USE_MONOTONIC
2103 if (expect_true (have_monotonic)) 3502 if (expect_true (have_monotonic))
… …
2126 * doesn't hurt either as we only do this on time-jumps or 3525 * doesn't hurt either as we only do this on time-jumps or
2127 * in the unlikely event of having been preempted here. 3526 * in the unlikely event of having been preempted here.
2128 */ 3527 */
2129 for (i = 4; --i; ) 3528 for (i = 4; --i; )
2130 { 3529 {
3530 ev_tstamp diff;
2131 rtmn_diff = ev_rt_now - mn_now; 3531 rtmn_diff = ev_rt_now - mn_now;
2132 3532
3533 diff = odiff - rtmn_diff;
3534
2133 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3535 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2134 return; /* all is well */ 3536 return; /* all is well */
2135 3537
2136 ev_rt_now = ev_time (); 3538 ev_rt_now = ev_time ();
2137 mn_now = get_clock (); 3539 mn_now = get_clock ();
2138 now_floor = mn_now; 3540 now_floor = mn_now;
… …
2160 3562
2161 mn_now = ev_rt_now; 3563 mn_now = ev_rt_now;
2162 } 3564 }
2163} 3565}
2164 3566
2165void 3567int
2166ev_loop (EV_P_ int flags) 3568ev_run (EV_P_ int flags)
2167{ 3569{
2168#if EV_MINIMAL < 2 3570#if EV_FEATURE_API
2169 ++loop_depth; 3571 ++loop_depth;
2170#endif 3572#endif
2171 3573
2172 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3574 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2173 3575
2174 loop_done = EVUNLOOP_CANCEL; 3576 loop_done = EVBREAK_CANCEL;
2175 3577
2176 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3578 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2177 3579
2178 do 3580 do
2179 { 3581 {
2180#if EV_VERIFY >= 2 3582#if EV_VERIFY >= 2
2181 ev_loop_verify (EV_A); 3583 ev_verify (EV_A);
2182#endif 3584#endif
2183 3585
2184#ifndef _WIN32 3586#ifndef _WIN32
2185 if (expect_false (curpid)) /* penalise the forking check even more */ 3587 if (expect_false (curpid)) /* penalise the forking check even more */
2186 if (expect_false (getpid () != curpid)) 3588 if (expect_false (getpid () != curpid))
… …
2198 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3600 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2199 EV_INVOKE_PENDING; 3601 EV_INVOKE_PENDING;
2200 } 3602 }
2201#endif 3603#endif
2202 3604
3605#if EV_PREPARE_ENABLE
2203 /* queue prepare watchers (and execute them) */ 3606 /* queue prepare watchers (and execute them) */
2204 if (expect_false (preparecnt)) 3607 if (expect_false (preparecnt))
2205 { 3608 {
2206 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3609 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2207 EV_INVOKE_PENDING; 3610 EV_INVOKE_PENDING;
2208 } 3611 }
3612#endif
2209 3613
2210 if (expect_false (loop_done)) 3614 if (expect_false (loop_done))
2211 break; 3615 break;
2212 3616
2213 /* we might have forked, so reify kernel state if necessary */ 3617 /* we might have forked, so reify kernel state if necessary */
… …
2220 /* calculate blocking time */ 3624 /* calculate blocking time */
2221 { 3625 {
2222 ev_tstamp waittime = 0.; 3626 ev_tstamp waittime = 0.;
2223 ev_tstamp sleeptime = 0.; 3627 ev_tstamp sleeptime = 0.;
2224 3628
3629 /* remember old timestamp for io_blocktime calculation */
3630 ev_tstamp prev_mn_now = mn_now;
3631
3632 /* update time to cancel out callback processing overhead */
3633 time_update (EV_A_ 1e100);
3634
3635 /* from now on, we want a pipe-wake-up */
3636 pipe_write_wanted = 1;
3637
3638 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3639
2225 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3640 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2226 { 3641 {
2227 /* remember old timestamp for io_blocktime calculation */
2228 ev_tstamp prev_mn_now = mn_now;
2229
2230 /* update time to cancel out callback processing overhead */
2231 time_update (EV_A_ 1e100);
2232
2233 waittime = MAX_BLOCKTIME; 3642 waittime = MAX_BLOCKTIME;
2234 3643
2235 if (timercnt) 3644 if (timercnt)
2236 { 3645 {
2237 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3646 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2238 if (waittime > to) waittime = to; 3647 if (waittime > to) waittime = to;
2239 } 3648 }
2240 3649
2241#if EV_PERIODIC_ENABLE 3650#if EV_PERIODIC_ENABLE
2242 if (periodiccnt) 3651 if (periodiccnt)
2243 { 3652 {
2244 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3653 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2245 if (waittime > to) waittime = to; 3654 if (waittime > to) waittime = to;
2246 } 3655 }
2247#endif 3656#endif
2248 3657
2249 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3658 /* don't let timeouts decrease the waittime below timeout_blocktime */
2250 if (expect_false (waittime < timeout_blocktime)) 3659 if (expect_false (waittime < timeout_blocktime))
2251 waittime = timeout_blocktime; 3660 waittime = timeout_blocktime;
3661
3662 /* at this point, we NEED to wait, so we have to ensure */
3663 /* to pass a minimum nonzero value to the backend */
3664 if (expect_false (waittime < backend_mintime))
3665 waittime = backend_mintime;
2252 3666
2253 /* extra check because io_blocktime is commonly 0 */ 3667 /* extra check because io_blocktime is commonly 0 */
2254 if (expect_false (io_blocktime)) 3668 if (expect_false (io_blocktime))
2255 { 3669 {
2256 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3670 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2257 3671
2258 if (sleeptime > waittime - backend_fudge) 3672 if (sleeptime > waittime - backend_mintime)
2259 sleeptime = waittime - backend_fudge; 3673 sleeptime = waittime - backend_mintime;
2260 3674
2261 if (expect_true (sleeptime > 0.)) 3675 if (expect_true (sleeptime > 0.))
2262 { 3676 {
2263 ev_sleep (sleeptime); 3677 ev_sleep (sleeptime);
2264 waittime -= sleeptime; 3678 waittime -= sleeptime;
2265 } 3679 }
2266 } 3680 }
2267 } 3681 }
2268 3682
2269#if EV_MINIMAL < 2 3683#if EV_FEATURE_API
2270 ++loop_count; 3684 ++loop_count;
2271#endif 3685#endif
2272 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3686 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2273 backend_poll (EV_A_ waittime); 3687 backend_poll (EV_A_ waittime);
2274 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3688 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3689
3690 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3691
3692 ECB_MEMORY_FENCE_ACQUIRE;
3693 if (pipe_write_skipped)
3694 {
3695 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3696 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3697 }
3698
2275 3699
2276 /* update ev_rt_now, do magic */ 3700 /* update ev_rt_now, do magic */
2277 time_update (EV_A_ waittime + sleeptime); 3701 time_update (EV_A_ waittime + sleeptime);
2278 } 3702 }
2279 3703
… …
2286#if EV_IDLE_ENABLE 3710#if EV_IDLE_ENABLE
2287 /* queue idle watchers unless other events are pending */ 3711 /* queue idle watchers unless other events are pending */
2288 idle_reify (EV_A); 3712 idle_reify (EV_A);
2289#endif 3713#endif
2290 3714
3715#if EV_CHECK_ENABLE
2291 /* queue check watchers, to be executed first */ 3716 /* queue check watchers, to be executed first */
2292 if (expect_false (checkcnt)) 3717 if (expect_false (checkcnt))
2293 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3718 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3719#endif
2294 3720
2295 EV_INVOKE_PENDING; 3721 EV_INVOKE_PENDING;
2296 } 3722 }
2297 while (expect_true ( 3723 while (expect_true (
2298 activecnt 3724 activecnt
2299 && !loop_done 3725 && !loop_done
2300 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3726 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2301 )); 3727 ));
2302 3728
2303 if (loop_done == EVUNLOOP_ONE) 3729 if (loop_done == EVBREAK_ONE)
2304 loop_done = EVUNLOOP_CANCEL; 3730 loop_done = EVBREAK_CANCEL;
2305 3731
2306#if EV_MINIMAL < 2 3732#if EV_FEATURE_API
2307 --loop_depth; 3733 --loop_depth;
2308#endif 3734#endif
2309}
2310 3735
3736 return activecnt;
3737}
3738
2311void 3739void
2312ev_unloop (EV_P_ int how) 3740ev_break (EV_P_ int how) EV_THROW
2313{ 3741{
2314 loop_done = how; 3742 loop_done = how;
2315} 3743}
2316 3744
2317void 3745void
2318ev_ref (EV_P) 3746ev_ref (EV_P) EV_THROW
2319{ 3747{
2320 ++activecnt; 3748 ++activecnt;
2321} 3749}
2322 3750
2323void 3751void
2324ev_unref (EV_P) 3752ev_unref (EV_P) EV_THROW
2325{ 3753{
2326 --activecnt; 3754 --activecnt;
2327} 3755}
2328 3756
2329void 3757void
2330ev_now_update (EV_P) 3758ev_now_update (EV_P) EV_THROW
2331{ 3759{
2332 time_update (EV_A_ 1e100); 3760 time_update (EV_A_ 1e100);
2333} 3761}
2334 3762
2335void 3763void
2336ev_suspend (EV_P) 3764ev_suspend (EV_P) EV_THROW
2337{ 3765{
2338 ev_now_update (EV_A); 3766 ev_now_update (EV_A);
2339} 3767}
2340 3768
2341void 3769void
2342ev_resume (EV_P) 3770ev_resume (EV_P) EV_THROW
2343{ 3771{
2344 ev_tstamp mn_prev = mn_now; 3772 ev_tstamp mn_prev = mn_now;
2345 3773
2346 ev_now_update (EV_A); 3774 ev_now_update (EV_A);
2347 timers_reschedule (EV_A_ mn_now - mn_prev); 3775 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2364inline_size void 3792inline_size void
2365wlist_del (WL *head, WL elem) 3793wlist_del (WL *head, WL elem)
2366{ 3794{
2367 while (*head) 3795 while (*head)
2368 { 3796 {
2369 if (*head == elem) 3797 if (expect_true (*head == elem))
2370 { 3798 {
2371 *head = elem->next; 3799 *head = elem->next;
2372 return; 3800 break;
2373 } 3801 }
2374 3802
2375 head = &(*head)->next; 3803 head = &(*head)->next;
2376 } 3804 }
2377} 3805}
… …
2386 w->pending = 0; 3814 w->pending = 0;
2387 } 3815 }
2388} 3816}
2389 3817
2390int 3818int
2391ev_clear_pending (EV_P_ void *w) 3819ev_clear_pending (EV_P_ void *w) EV_THROW
2392{ 3820{
2393 W w_ = (W)w; 3821 W w_ = (W)w;
2394 int pending = w_->pending; 3822 int pending = w_->pending;
2395 3823
2396 if (expect_true (pending)) 3824 if (expect_true (pending))
… …
2428 w->active = 0; 3856 w->active = 0;
2429} 3857}
2430 3858
2431/*****************************************************************************/ 3859/*****************************************************************************/
2432 3860
2433void noinline 3861noinline
3862void
2434ev_io_start (EV_P_ ev_io *w) 3863ev_io_start (EV_P_ ev_io *w) EV_THROW
2435{ 3864{
2436 int fd = w->fd; 3865 int fd = w->fd;
2437 3866
2438 if (expect_false (ev_is_active (w))) 3867 if (expect_false (ev_is_active (w)))
2439 return; 3868 return;
2440 3869
2441 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3870 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2442 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3871 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2443 3872
2444 EV_FREQUENT_CHECK; 3873 EV_FREQUENT_CHECK;
2445 3874
2446 ev_start (EV_A_ (W)w, 1); 3875 ev_start (EV_A_ (W)w, 1);
2447 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3876 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2448 wlist_add (&anfds[fd].head, (WL)w); 3877 wlist_add (&anfds[fd].head, (WL)w);
2449 3878
3879 /* common bug, apparently */
3880 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3881
2450 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3882 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2451 w->events &= ~EV__IOFDSET; 3883 w->events &= ~EV__IOFDSET;
2452 3884
2453 EV_FREQUENT_CHECK; 3885 EV_FREQUENT_CHECK;
2454} 3886}
2455 3887
2456void noinline 3888noinline
3889void
2457ev_io_stop (EV_P_ ev_io *w) 3890ev_io_stop (EV_P_ ev_io *w) EV_THROW
2458{ 3891{
2459 clear_pending (EV_A_ (W)w); 3892 clear_pending (EV_A_ (W)w);
2460 if (expect_false (!ev_is_active (w))) 3893 if (expect_false (!ev_is_active (w)))
2461 return; 3894 return;
2462 3895
… …
2465 EV_FREQUENT_CHECK; 3898 EV_FREQUENT_CHECK;
2466 3899
2467 wlist_del (&anfds[w->fd].head, (WL)w); 3900 wlist_del (&anfds[w->fd].head, (WL)w);
2468 ev_stop (EV_A_ (W)w); 3901 ev_stop (EV_A_ (W)w);
2469 3902
2470 fd_change (EV_A_ w->fd, 1); 3903 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2471 3904
2472 EV_FREQUENT_CHECK; 3905 EV_FREQUENT_CHECK;
2473} 3906}
2474 3907
2475void noinline 3908noinline
3909void
2476ev_timer_start (EV_P_ ev_timer *w) 3910ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2477{ 3911{
2478 if (expect_false (ev_is_active (w))) 3912 if (expect_false (ev_is_active (w)))
2479 return; 3913 return;
2480 3914
2481 ev_at (w) += mn_now; 3915 ev_at (w) += mn_now;
… …
2494 EV_FREQUENT_CHECK; 3928 EV_FREQUENT_CHECK;
2495 3929
2496 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3930 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2497} 3931}
2498 3932
2499void noinline 3933noinline
3934void
2500ev_timer_stop (EV_P_ ev_timer *w) 3935ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2501{ 3936{
2502 clear_pending (EV_A_ (W)w); 3937 clear_pending (EV_A_ (W)w);
2503 if (expect_false (!ev_is_active (w))) 3938 if (expect_false (!ev_is_active (w)))
2504 return; 3939 return;
2505 3940
… …
2517 timers [active] = timers [timercnt + HEAP0]; 3952 timers [active] = timers [timercnt + HEAP0];
2518 adjustheap (timers, timercnt, active); 3953 adjustheap (timers, timercnt, active);
2519 } 3954 }
2520 } 3955 }
2521 3956
2522 EV_FREQUENT_CHECK;
2523
2524 ev_at (w) -= mn_now; 3957 ev_at (w) -= mn_now;
2525 3958
2526 ev_stop (EV_A_ (W)w); 3959 ev_stop (EV_A_ (W)w);
2527}
2528 3960
3961 EV_FREQUENT_CHECK;
3962}
3963
2529void noinline 3964noinline
3965void
2530ev_timer_again (EV_P_ ev_timer *w) 3966ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2531{ 3967{
2532 EV_FREQUENT_CHECK; 3968 EV_FREQUENT_CHECK;
3969
3970 clear_pending (EV_A_ (W)w);
2533 3971
2534 if (ev_is_active (w)) 3972 if (ev_is_active (w))
2535 { 3973 {
2536 if (w->repeat) 3974 if (w->repeat)
2537 { 3975 {
… …
2550 3988
2551 EV_FREQUENT_CHECK; 3989 EV_FREQUENT_CHECK;
2552} 3990}
2553 3991
2554ev_tstamp 3992ev_tstamp
2555ev_timer_remaining (EV_P_ ev_timer *w) 3993ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2556{ 3994{
2557 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3995 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2558} 3996}
2559 3997
2560#if EV_PERIODIC_ENABLE 3998#if EV_PERIODIC_ENABLE
2561void noinline 3999noinline
4000void
2562ev_periodic_start (EV_P_ ev_periodic *w) 4001ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2563{ 4002{
2564 if (expect_false (ev_is_active (w))) 4003 if (expect_false (ev_is_active (w)))
2565 return; 4004 return;
2566 4005
2567 if (w->reschedule_cb) 4006 if (w->reschedule_cb)
2568 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4007 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2569 else if (w->interval) 4008 else if (w->interval)
2570 { 4009 {
2571 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4010 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2572 /* this formula differs from the one in periodic_reify because we do not always round up */ 4011 periodic_recalc (EV_A_ w);
2573 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2574 } 4012 }
2575 else 4013 else
2576 ev_at (w) = w->offset; 4014 ev_at (w) = w->offset;
2577 4015
2578 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
… …
2587 EV_FREQUENT_CHECK; 4025 EV_FREQUENT_CHECK;
2588 4026
2589 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4027 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2590} 4028}
2591 4029
2592void noinline 4030noinline
4031void
2593ev_periodic_stop (EV_P_ ev_periodic *w) 4032ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2594{ 4033{
2595 clear_pending (EV_A_ (W)w); 4034 clear_pending (EV_A_ (W)w);
2596 if (expect_false (!ev_is_active (w))) 4035 if (expect_false (!ev_is_active (w)))
2597 return; 4036 return;
2598 4037
… …
2610 periodics [active] = periodics [periodiccnt + HEAP0]; 4049 periodics [active] = periodics [periodiccnt + HEAP0];
2611 adjustheap (periodics, periodiccnt, active); 4050 adjustheap (periodics, periodiccnt, active);
2612 } 4051 }
2613 } 4052 }
2614 4053
2615 EV_FREQUENT_CHECK;
2616
2617 ev_stop (EV_A_ (W)w); 4054 ev_stop (EV_A_ (W)w);
2618}
2619 4055
4056 EV_FREQUENT_CHECK;
4057}
4058
2620void noinline 4059noinline
4060void
2621ev_periodic_again (EV_P_ ev_periodic *w) 4061ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2622{ 4062{
2623 /* TODO: use adjustheap and recalculation */ 4063 /* TODO: use adjustheap and recalculation */
2624 ev_periodic_stop (EV_A_ w); 4064 ev_periodic_stop (EV_A_ w);
2625 ev_periodic_start (EV_A_ w); 4065 ev_periodic_start (EV_A_ w);
2626} 4066}
… …
2628 4068
2629#ifndef SA_RESTART 4069#ifndef SA_RESTART
2630# define SA_RESTART 0 4070# define SA_RESTART 0
2631#endif 4071#endif
2632 4072
4073#if EV_SIGNAL_ENABLE
4074
2633void noinline 4075noinline
4076void
2634ev_signal_start (EV_P_ ev_signal *w) 4077ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2635{ 4078{
2636#if EV_MULTIPLICITY
2637 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2638#endif
2639 if (expect_false (ev_is_active (w))) 4079 if (expect_false (ev_is_active (w)))
2640 return; 4080 return;
2641 4081
2642 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4082 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4083
4084#if EV_MULTIPLICITY
4085 assert (("libev: a signal must not be attached to two different loops",
4086 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
4087
4088 signals [w->signum - 1].loop = EV_A;
4089 ECB_MEMORY_FENCE_RELEASE;
4090#endif
2643 4091
2644 EV_FREQUENT_CHECK; 4092 EV_FREQUENT_CHECK;
2645 4093
2646#if EV_USE_SIGNALFD 4094#if EV_USE_SIGNALFD
2647 if (sigfd == -2) 4095 if (sigfd == -2)
… …
2669 sigaddset (&sigfd_set, w->signum); 4117 sigaddset (&sigfd_set, w->signum);
2670 sigprocmask (SIG_BLOCK, &sigfd_set, 0); 4118 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671 4119
2672 signalfd (sigfd, &sigfd_set, 0); 4120 signalfd (sigfd, &sigfd_set, 0);
2673 } 4121 }
2674 else
2675#endif
2676 evpipe_init (EV_A);
2677
2678 {
2679#ifndef _WIN32
2680 sigset_t full, prev;
2681 sigfillset (&full);
2682 sigprocmask (SIG_SETMASK, &full, &prev);
2683#endif
2684
2685 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2686
2687#ifndef _WIN32
2688# if EV_USE_SIGNALFD
2689 if (sigfd < 0)/*TODO*/
2690# endif 4122#endif
2691 sigdelset (&prev, w->signum);
2692 sigprocmask (SIG_SETMASK, &prev, 0);
2693#endif
2694 }
2695 4123
2696 ev_start (EV_A_ (W)w, 1); 4124 ev_start (EV_A_ (W)w, 1);
2697 wlist_add (&signals [w->signum - 1].head, (WL)w); 4125 wlist_add (&signals [w->signum - 1].head, (WL)w);
2698 4126
2699 if (!((WL)w)->next) 4127 if (!((WL)w)->next)
2700 {
2701#if _WIN32
2702 signal (w->signum, ev_sighandler);
2703#else
2704# if EV_USE_SIGNALFD 4128# if EV_USE_SIGNALFD
2705 if (sigfd < 0) /*TODO*/ 4129 if (sigfd < 0) /*TODO*/
2706# endif 4130# endif
2707 { 4131 {
4132# ifdef _WIN32
4133 evpipe_init (EV_A);
4134
4135 signal (w->signum, ev_sighandler);
4136# else
2708 struct sigaction sa = { }; 4137 struct sigaction sa;
4138
4139 evpipe_init (EV_A);
4140
2709 sa.sa_handler = ev_sighandler; 4141 sa.sa_handler = ev_sighandler;
2710 sigfillset (&sa.sa_mask); 4142 sigfillset (&sa.sa_mask);
2711 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4143 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2712 sigaction (w->signum, &sa, 0); 4144 sigaction (w->signum, &sa, 0);
4145
4146 if (origflags & EVFLAG_NOSIGMASK)
4147 {
4148 sigemptyset (&sa.sa_mask);
4149 sigaddset (&sa.sa_mask, w->signum);
4150 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2713 } 4151 }
2714#endif 4152#endif
2715 } 4153 }
2716 4154
2717 EV_FREQUENT_CHECK; 4155 EV_FREQUENT_CHECK;
2718} 4156}
2719 4157
2720void noinline 4158noinline
4159void
2721ev_signal_stop (EV_P_ ev_signal *w) 4160ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2722{ 4161{
2723 clear_pending (EV_A_ (W)w); 4162 clear_pending (EV_A_ (W)w);
2724 if (expect_false (!ev_is_active (w))) 4163 if (expect_false (!ev_is_active (w)))
2725 return; 4164 return;
2726 4165
… …
2728 4167
2729 wlist_del (&signals [w->signum - 1].head, (WL)w); 4168 wlist_del (&signals [w->signum - 1].head, (WL)w);
2730 ev_stop (EV_A_ (W)w); 4169 ev_stop (EV_A_ (W)w);
2731 4170
2732 if (!signals [w->signum - 1].head) 4171 if (!signals [w->signum - 1].head)
4172 {
4173#if EV_MULTIPLICITY
4174 signals [w->signum - 1].loop = 0; /* unattach from signal */
4175#endif
2733#if EV_USE_SIGNALFD 4176#if EV_USE_SIGNALFD
2734 if (sigfd >= 0) 4177 if (sigfd >= 0)
2735 { 4178 {
2736 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4179 sigset_t ss;
4180
4181 sigemptyset (&ss);
4182 sigaddset (&ss, w->signum);
2737 sigdelset (&sigfd_set, w->signum); 4183 sigdelset (&sigfd_set, w->signum);
4184
2738 signalfd (sigfd, &sigfd_set, 0); 4185 signalfd (sigfd, &sigfd_set, 0);
2739 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4186 sigprocmask (SIG_UNBLOCK, &ss, 0);
2740 /*TODO: maybe unblock signal? */
2741 } 4187 }
2742 else 4188 else
2743#endif 4189#endif
2744 signal (w->signum, SIG_DFL); 4190 signal (w->signum, SIG_DFL);
4191 }
2745 4192
2746 EV_FREQUENT_CHECK; 4193 EV_FREQUENT_CHECK;
2747} 4194}
2748 4195
4196#endif
4197
4198#if EV_CHILD_ENABLE
4199
2749void 4200void
2750ev_child_start (EV_P_ ev_child *w) 4201ev_child_start (EV_P_ ev_child *w) EV_THROW
2751{ 4202{
2752#if EV_MULTIPLICITY 4203#if EV_MULTIPLICITY
2753 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4204 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2754#endif 4205#endif
2755 if (expect_false (ev_is_active (w))) 4206 if (expect_false (ev_is_active (w)))
2756 return; 4207 return;
2757 4208
2758 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
2759 4210
2760 ev_start (EV_A_ (W)w, 1); 4211 ev_start (EV_A_ (W)w, 1);
2761 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4212 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2762 4213
2763 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
2764} 4215}
2765 4216
2766void 4217void
2767ev_child_stop (EV_P_ ev_child *w) 4218ev_child_stop (EV_P_ ev_child *w) EV_THROW
2768{ 4219{
2769 clear_pending (EV_A_ (W)w); 4220 clear_pending (EV_A_ (W)w);
2770 if (expect_false (!ev_is_active (w))) 4221 if (expect_false (!ev_is_active (w)))
2771 return; 4222 return;
2772 4223
2773 EV_FREQUENT_CHECK; 4224 EV_FREQUENT_CHECK;
2774 4225
2775 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4226 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2776 ev_stop (EV_A_ (W)w); 4227 ev_stop (EV_A_ (W)w);
2777 4228
2778 EV_FREQUENT_CHECK; 4229 EV_FREQUENT_CHECK;
2779} 4230}
4231
4232#endif
2780 4233
2781#if EV_STAT_ENABLE 4234#if EV_STAT_ENABLE
2782 4235
2783# ifdef _WIN32 4236# ifdef _WIN32
2784# undef lstat 4237# undef lstat
… …
2787 4240
2788#define DEF_STAT_INTERVAL 5.0074891 4241#define DEF_STAT_INTERVAL 5.0074891
2789#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4242#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2790#define MIN_STAT_INTERVAL 0.1074891 4243#define MIN_STAT_INTERVAL 0.1074891
2791 4244
2792static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4245noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2793 4246
2794#if EV_USE_INOTIFY 4247#if EV_USE_INOTIFY
2795# define EV_INOTIFY_BUFSIZE 8192
2796 4248
2797static void noinline 4249/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4250# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4251
4252noinline
4253static void
2798infy_add (EV_P_ ev_stat *w) 4254infy_add (EV_P_ ev_stat *w)
2799{ 4255{
2800 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4256 w->wd = inotify_add_watch (fs_fd, w->path,
4257 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4258 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4259 | IN_DONT_FOLLOW | IN_MASK_ADD);
2801 4260
2802 if (w->wd < 0) 4261 if (w->wd >= 0)
4262 {
4263 struct statfs sfs;
4264
4265 /* now local changes will be tracked by inotify, but remote changes won't */
4266 /* unless the filesystem is known to be local, we therefore still poll */
4267 /* also do poll on <2.6.25, but with normal frequency */
4268
4269 if (!fs_2625)
4270 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4271 else if (!statfs (w->path, &sfs)
4272 && (sfs.f_type == 0x1373 /* devfs */
4273 || sfs.f_type == 0x4006 /* fat */
4274 || sfs.f_type == 0x4d44 /* msdos */
4275 || sfs.f_type == 0xEF53 /* ext2/3 */
4276 || sfs.f_type == 0x72b6 /* jffs2 */
4277 || sfs.f_type == 0x858458f6 /* ramfs */
4278 || sfs.f_type == 0x5346544e /* ntfs */
4279 || sfs.f_type == 0x3153464a /* jfs */
4280 || sfs.f_type == 0x9123683e /* btrfs */
4281 || sfs.f_type == 0x52654973 /* reiser3 */
4282 || sfs.f_type == 0x01021994 /* tmpfs */
4283 || sfs.f_type == 0x58465342 /* xfs */))
4284 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4285 else
4286 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2803 { 4287 }
4288 else
4289 {
4290 /* can't use inotify, continue to stat */
2804 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4291 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2805 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2806 4292
2807 /* monitor some parent directory for speedup hints */ 4293 /* if path is not there, monitor some parent directory for speedup hints */
2808 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4294 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2809 /* but an efficiency issue only */ 4295 /* but an efficiency issue only */
2810 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4296 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2811 { 4297 {
2812 char path [4096]; 4298 char path [4096];
… …
2822 if (!pend || pend == path) 4308 if (!pend || pend == path)
2823 break; 4309 break;
2824 4310
2825 *pend = 0; 4311 *pend = 0;
2826 w->wd = inotify_add_watch (fs_fd, path, mask); 4312 w->wd = inotify_add_watch (fs_fd, path, mask);
2827 } 4313 }
2828 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4314 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2829 } 4315 }
2830 } 4316 }
2831 4317
2832 if (w->wd >= 0) 4318 if (w->wd >= 0)
2833 {
2834 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4319 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2835 4320
2836 /* now local changes will be tracked by inotify, but remote changes won't */ 4321 /* now re-arm timer, if required */
2837 /* unless the filesystem it known to be local, we therefore still poll */ 4322 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2838 /* also do poll on <2.6.25, but with normal frequency */
2839 struct statfs sfs;
2840
2841 if (fs_2625 && !statfs (w->path, &sfs))
2842 if (sfs.f_type == 0x1373 /* devfs */
2843 || sfs.f_type == 0xEF53 /* ext2/3 */
2844 || sfs.f_type == 0x3153464a /* jfs */
2845 || sfs.f_type == 0x52654973 /* reiser3 */
2846 || sfs.f_type == 0x01021994 /* tempfs */
2847 || sfs.f_type == 0x58465342 /* xfs */)
2848 return;
2849
2850 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2851 ev_timer_again (EV_A_ &w->timer); 4323 ev_timer_again (EV_A_ &w->timer);
2852 } 4324 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2853} 4325}
2854 4326
2855static void noinline 4327noinline
4328static void
2856infy_del (EV_P_ ev_stat *w) 4329infy_del (EV_P_ ev_stat *w)
2857{ 4330{
2858 int slot; 4331 int slot;
2859 int wd = w->wd; 4332 int wd = w->wd;
2860 4333
2861 if (wd < 0) 4334 if (wd < 0)
2862 return; 4335 return;
2863 4336
2864 w->wd = -2; 4337 w->wd = -2;
2865 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4338 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2866 wlist_del (&fs_hash [slot].head, (WL)w); 4339 wlist_del (&fs_hash [slot].head, (WL)w);
2867 4340
2868 /* remove this watcher, if others are watching it, they will rearm */ 4341 /* remove this watcher, if others are watching it, they will rearm */
2869 inotify_rm_watch (fs_fd, wd); 4342 inotify_rm_watch (fs_fd, wd);
2870} 4343}
2871 4344
2872static void noinline 4345noinline
4346static void
2873infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4347infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2874{ 4348{
2875 if (slot < 0) 4349 if (slot < 0)
2876 /* overflow, need to check for all hash slots */ 4350 /* overflow, need to check for all hash slots */
2877 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4351 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2878 infy_wd (EV_A_ slot, wd, ev); 4352 infy_wd (EV_A_ slot, wd, ev);
2879 else 4353 else
2880 { 4354 {
2881 WL w_; 4355 WL w_;
2882 4356
2883 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4357 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2884 { 4358 {
2885 ev_stat *w = (ev_stat *)w_; 4359 ev_stat *w = (ev_stat *)w_;
2886 w_ = w_->next; /* lets us remove this watcher and all before it */ 4360 w_ = w_->next; /* lets us remove this watcher and all before it */
2887 4361
2888 if (w->wd == wd || wd == -1) 4362 if (w->wd == wd || wd == -1)
2889 { 4363 {
2890 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4364 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2891 { 4365 {
2892 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4366 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2893 w->wd = -1; 4367 w->wd = -1;
2894 infy_add (EV_A_ w); /* re-add, no matter what */ 4368 infy_add (EV_A_ w); /* re-add, no matter what */
2895 } 4369 }
2896 4370
2897 stat_timer_cb (EV_A_ &w->timer, 0); 4371 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2902 4376
2903static void 4377static void
2904infy_cb (EV_P_ ev_io *w, int revents) 4378infy_cb (EV_P_ ev_io *w, int revents)
2905{ 4379{
2906 char buf [EV_INOTIFY_BUFSIZE]; 4380 char buf [EV_INOTIFY_BUFSIZE];
2907 struct inotify_event *ev = (struct inotify_event *)buf;
2908 int ofs; 4381 int ofs;
2909 int len = read (fs_fd, buf, sizeof (buf)); 4382 int len = read (fs_fd, buf, sizeof (buf));
2910 4383
2911 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4384 for (ofs = 0; ofs < len; )
4385 {
4386 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2912 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4387 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4388 ofs += sizeof (struct inotify_event) + ev->len;
4389 }
2913} 4390}
2914 4391
2915inline_size void 4392inline_size ecb_cold
4393void
2916check_2625 (EV_P) 4394ev_check_2625 (EV_P)
2917{ 4395{
2918 /* kernels < 2.6.25 are borked 4396 /* kernels < 2.6.25 are borked
2919 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4397 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2920 */ 4398 */
2921 struct utsname buf; 4399 if (ev_linux_version () < 0x020619)
2922 int major, minor, micro;
2923
2924 if (uname (&buf))
2925 return; 4400 return;
2926 4401
2927 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2928 return;
2929
2930 if (major < 2
2931 || (major == 2 && minor < 6)
2932 || (major == 2 && minor == 6 && micro < 25))
2933 return;
2934
2935 fs_2625 = 1; 4402 fs_2625 = 1;
4403}
4404
4405inline_size int
4406infy_newfd (void)
4407{
4408#if defined IN_CLOEXEC && defined IN_NONBLOCK
4409 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4410 if (fd >= 0)
4411 return fd;
4412#endif
4413 return inotify_init ();
2936} 4414}
2937 4415
2938inline_size void 4416inline_size void
2939infy_init (EV_P) 4417infy_init (EV_P)
2940{ 4418{
2941 if (fs_fd != -2) 4419 if (fs_fd != -2)
2942 return; 4420 return;
2943 4421
2944 fs_fd = -1; 4422 fs_fd = -1;
2945 4423
2946 check_2625 (EV_A); 4424 ev_check_2625 (EV_A);
2947 4425
2948 fs_fd = inotify_init (); 4426 fs_fd = infy_newfd ();
2949 4427
2950 if (fs_fd >= 0) 4428 if (fs_fd >= 0)
2951 { 4429 {
4430 fd_intern (fs_fd);
2952 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4431 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2953 ev_set_priority (&fs_w, EV_MAXPRI); 4432 ev_set_priority (&fs_w, EV_MAXPRI);
2954 ev_io_start (EV_A_ &fs_w); 4433 ev_io_start (EV_A_ &fs_w);
4434 ev_unref (EV_A);
2955 } 4435 }
2956} 4436}
2957 4437
2958inline_size void 4438inline_size void
2959infy_fork (EV_P) 4439infy_fork (EV_P)
… …
2961 int slot; 4441 int slot;
2962 4442
2963 if (fs_fd < 0) 4443 if (fs_fd < 0)
2964 return; 4444 return;
2965 4445
4446 ev_ref (EV_A);
4447 ev_io_stop (EV_A_ &fs_w);
2966 close (fs_fd); 4448 close (fs_fd);
2967 fs_fd = inotify_init (); 4449 fs_fd = infy_newfd ();
2968 4450
4451 if (fs_fd >= 0)
4452 {
4453 fd_intern (fs_fd);
4454 ev_io_set (&fs_w, fs_fd, EV_READ);
4455 ev_io_start (EV_A_ &fs_w);
4456 ev_unref (EV_A);
4457 }
4458
2969 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4459 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2970 { 4460 {
2971 WL w_ = fs_hash [slot].head; 4461 WL w_ = fs_hash [slot].head;
2972 fs_hash [slot].head = 0; 4462 fs_hash [slot].head = 0;
2973 4463
2974 while (w_) 4464 while (w_)
… …
2979 w->wd = -1; 4469 w->wd = -1;
2980 4470
2981 if (fs_fd >= 0) 4471 if (fs_fd >= 0)
2982 infy_add (EV_A_ w); /* re-add, no matter what */ 4472 infy_add (EV_A_ w); /* re-add, no matter what */
2983 else 4473 else
4474 {
4475 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4476 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2984 ev_timer_again (EV_A_ &w->timer); 4477 ev_timer_again (EV_A_ &w->timer);
4478 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4479 }
2985 } 4480 }
2986 } 4481 }
2987} 4482}
2988 4483
2989#endif 4484#endif
… …
2993#else 4488#else
2994# define EV_LSTAT(p,b) lstat (p, b) 4489# define EV_LSTAT(p,b) lstat (p, b)
2995#endif 4490#endif
2996 4491
2997void 4492void
2998ev_stat_stat (EV_P_ ev_stat *w) 4493ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2999{ 4494{
3000 if (lstat (w->path, &w->attr) < 0) 4495 if (lstat (w->path, &w->attr) < 0)
3001 w->attr.st_nlink = 0; 4496 w->attr.st_nlink = 0;
3002 else if (!w->attr.st_nlink) 4497 else if (!w->attr.st_nlink)
3003 w->attr.st_nlink = 1; 4498 w->attr.st_nlink = 1;
3004} 4499}
3005 4500
3006static void noinline 4501noinline
4502static void
3007stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4503stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3008{ 4504{
3009 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4505 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3010 4506
3011 /* we copy this here each the time so that */ 4507 ev_statdata prev = w->attr;
3012 /* prev has the old value when the callback gets invoked */
3013 w->prev = w->attr;
3014 ev_stat_stat (EV_A_ w); 4508 ev_stat_stat (EV_A_ w);
3015 4509
3016 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4510 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3017 if ( 4511 if (
3018 w->prev.st_dev != w->attr.st_dev 4512 prev.st_dev != w->attr.st_dev
3019 || w->prev.st_ino != w->attr.st_ino 4513 || prev.st_ino != w->attr.st_ino
3020 || w->prev.st_mode != w->attr.st_mode 4514 || prev.st_mode != w->attr.st_mode
3021 || w->prev.st_nlink != w->attr.st_nlink 4515 || prev.st_nlink != w->attr.st_nlink
3022 || w->prev.st_uid != w->attr.st_uid 4516 || prev.st_uid != w->attr.st_uid
3023 || w->prev.st_gid != w->attr.st_gid 4517 || prev.st_gid != w->attr.st_gid
3024 || w->prev.st_rdev != w->attr.st_rdev 4518 || prev.st_rdev != w->attr.st_rdev
3025 || w->prev.st_size != w->attr.st_size 4519 || prev.st_size != w->attr.st_size
3026 || w->prev.st_atime != w->attr.st_atime 4520 || prev.st_atime != w->attr.st_atime
3027 || w->prev.st_mtime != w->attr.st_mtime 4521 || prev.st_mtime != w->attr.st_mtime
3028 || w->prev.st_ctime != w->attr.st_ctime 4522 || prev.st_ctime != w->attr.st_ctime
3029 ) { 4523 ) {
4524 /* we only update w->prev on actual differences */
4525 /* in case we test more often than invoke the callback, */
4526 /* to ensure that prev is always different to attr */
4527 w->prev = prev;
4528
3030 #if EV_USE_INOTIFY 4529 #if EV_USE_INOTIFY
3031 if (fs_fd >= 0) 4530 if (fs_fd >= 0)
3032 { 4531 {
3033 infy_del (EV_A_ w); 4532 infy_del (EV_A_ w);
3034 infy_add (EV_A_ w); 4533 infy_add (EV_A_ w);
… …
3039 ev_feed_event (EV_A_ w, EV_STAT); 4538 ev_feed_event (EV_A_ w, EV_STAT);
3040 } 4539 }
3041} 4540}
3042 4541
3043void 4542void
3044ev_stat_start (EV_P_ ev_stat *w) 4543ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3045{ 4544{
3046 if (expect_false (ev_is_active (w))) 4545 if (expect_false (ev_is_active (w)))
3047 return; 4546 return;
3048 4547
3049 ev_stat_stat (EV_A_ w); 4548 ev_stat_stat (EV_A_ w);
… …
3059 4558
3060 if (fs_fd >= 0) 4559 if (fs_fd >= 0)
3061 infy_add (EV_A_ w); 4560 infy_add (EV_A_ w);
3062 else 4561 else
3063#endif 4562#endif
4563 {
3064 ev_timer_again (EV_A_ &w->timer); 4564 ev_timer_again (EV_A_ &w->timer);
4565 ev_unref (EV_A);
4566 }
3065 4567
3066 ev_start (EV_A_ (W)w, 1); 4568 ev_start (EV_A_ (W)w, 1);
3067 4569
3068 EV_FREQUENT_CHECK; 4570 EV_FREQUENT_CHECK;
3069} 4571}
3070 4572
3071void 4573void
3072ev_stat_stop (EV_P_ ev_stat *w) 4574ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3073{ 4575{
3074 clear_pending (EV_A_ (W)w); 4576 clear_pending (EV_A_ (W)w);
3075 if (expect_false (!ev_is_active (w))) 4577 if (expect_false (!ev_is_active (w)))
3076 return; 4578 return;
3077 4579
3078 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
3079 4581
3080#if EV_USE_INOTIFY 4582#if EV_USE_INOTIFY
3081 infy_del (EV_A_ w); 4583 infy_del (EV_A_ w);
3082#endif 4584#endif
4585
4586 if (ev_is_active (&w->timer))
4587 {
4588 ev_ref (EV_A);
3083 ev_timer_stop (EV_A_ &w->timer); 4589 ev_timer_stop (EV_A_ &w->timer);
4590 }
3084 4591
3085 ev_stop (EV_A_ (W)w); 4592 ev_stop (EV_A_ (W)w);
3086 4593
3087 EV_FREQUENT_CHECK; 4594 EV_FREQUENT_CHECK;
3088} 4595}
3089#endif 4596#endif
3090 4597
3091#if EV_IDLE_ENABLE 4598#if EV_IDLE_ENABLE
3092void 4599void
3093ev_idle_start (EV_P_ ev_idle *w) 4600ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3094{ 4601{
3095 if (expect_false (ev_is_active (w))) 4602 if (expect_false (ev_is_active (w)))
3096 return; 4603 return;
3097 4604
3098 pri_adjust (EV_A_ (W)w); 4605 pri_adjust (EV_A_ (W)w);
… …
3111 4618
3112 EV_FREQUENT_CHECK; 4619 EV_FREQUENT_CHECK;
3113} 4620}
3114 4621
3115void 4622void
3116ev_idle_stop (EV_P_ ev_idle *w) 4623ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3117{ 4624{
3118 clear_pending (EV_A_ (W)w); 4625 clear_pending (EV_A_ (W)w);
3119 if (expect_false (!ev_is_active (w))) 4626 if (expect_false (!ev_is_active (w)))
3120 return; 4627 return;
3121 4628
… …
3133 4640
3134 EV_FREQUENT_CHECK; 4641 EV_FREQUENT_CHECK;
3135} 4642}
3136#endif 4643#endif
3137 4644
4645#if EV_PREPARE_ENABLE
3138void 4646void
3139ev_prepare_start (EV_P_ ev_prepare *w) 4647ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3140{ 4648{
3141 if (expect_false (ev_is_active (w))) 4649 if (expect_false (ev_is_active (w)))
3142 return; 4650 return;
3143 4651
3144 EV_FREQUENT_CHECK; 4652 EV_FREQUENT_CHECK;
… …
3149 4657
3150 EV_FREQUENT_CHECK; 4658 EV_FREQUENT_CHECK;
3151} 4659}
3152 4660
3153void 4661void
3154ev_prepare_stop (EV_P_ ev_prepare *w) 4662ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3155{ 4663{
3156 clear_pending (EV_A_ (W)w); 4664 clear_pending (EV_A_ (W)w);
3157 if (expect_false (!ev_is_active (w))) 4665 if (expect_false (!ev_is_active (w)))
3158 return; 4666 return;
3159 4667
… …
3168 4676
3169 ev_stop (EV_A_ (W)w); 4677 ev_stop (EV_A_ (W)w);
3170 4678
3171 EV_FREQUENT_CHECK; 4679 EV_FREQUENT_CHECK;
3172} 4680}
4681#endif
3173 4682
4683#if EV_CHECK_ENABLE
3174void 4684void
3175ev_check_start (EV_P_ ev_check *w) 4685ev_check_start (EV_P_ ev_check *w) EV_THROW
3176{ 4686{
3177 if (expect_false (ev_is_active (w))) 4687 if (expect_false (ev_is_active (w)))
3178 return; 4688 return;
3179 4689
3180 EV_FREQUENT_CHECK; 4690 EV_FREQUENT_CHECK;
… …
3185 4695
3186 EV_FREQUENT_CHECK; 4696 EV_FREQUENT_CHECK;
3187} 4697}
3188 4698
3189void 4699void
3190ev_check_stop (EV_P_ ev_check *w) 4700ev_check_stop (EV_P_ ev_check *w) EV_THROW
3191{ 4701{
3192 clear_pending (EV_A_ (W)w); 4702 clear_pending (EV_A_ (W)w);
3193 if (expect_false (!ev_is_active (w))) 4703 if (expect_false (!ev_is_active (w)))
3194 return; 4704 return;
3195 4705
… …
3204 4714
3205 ev_stop (EV_A_ (W)w); 4715 ev_stop (EV_A_ (W)w);
3206 4716
3207 EV_FREQUENT_CHECK; 4717 EV_FREQUENT_CHECK;
3208} 4718}
4719#endif
3209 4720
3210#if EV_EMBED_ENABLE 4721#if EV_EMBED_ENABLE
3211void noinline 4722noinline
4723void
3212ev_embed_sweep (EV_P_ ev_embed *w) 4724ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3213{ 4725{
3214 ev_loop (w->other, EVLOOP_NONBLOCK); 4726 ev_run (w->other, EVRUN_NOWAIT);
3215} 4727}
3216 4728
3217static void 4729static void
3218embed_io_cb (EV_P_ ev_io *io, int revents) 4730embed_io_cb (EV_P_ ev_io *io, int revents)
3219{ 4731{
3220 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4732 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3221 4733
3222 if (ev_cb (w)) 4734 if (ev_cb (w))
3223 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4735 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3224 else 4736 else
3225 ev_loop (w->other, EVLOOP_NONBLOCK); 4737 ev_run (w->other, EVRUN_NOWAIT);
3226} 4738}
3227 4739
3228static void 4740static void
3229embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4741embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3230{ 4742{
3231 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4743 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3232 4744
3233 { 4745 {
3234 struct ev_loop *loop = w->other; 4746 EV_P = w->other;
3235 4747
3236 while (fdchangecnt) 4748 while (fdchangecnt)
3237 { 4749 {
3238 fd_reify (EV_A); 4750 fd_reify (EV_A);
3239 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4751 ev_run (EV_A_ EVRUN_NOWAIT);
3240 } 4752 }
3241 } 4753 }
3242} 4754}
3243 4755
3244static void 4756static void
… …
3247 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4759 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3248 4760
3249 ev_embed_stop (EV_A_ w); 4761 ev_embed_stop (EV_A_ w);
3250 4762
3251 { 4763 {
3252 struct ev_loop *loop = w->other; 4764 EV_P = w->other;
3253 4765
3254 ev_loop_fork (EV_A); 4766 ev_loop_fork (EV_A);
3255 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4767 ev_run (EV_A_ EVRUN_NOWAIT);
3256 } 4768 }
3257 4769
3258 ev_embed_start (EV_A_ w); 4770 ev_embed_start (EV_A_ w);
3259} 4771}
3260 4772
… …
3265 ev_idle_stop (EV_A_ idle); 4777 ev_idle_stop (EV_A_ idle);
3266} 4778}
3267#endif 4779#endif
3268 4780
3269void 4781void
3270ev_embed_start (EV_P_ ev_embed *w) 4782ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3271{ 4783{
3272 if (expect_false (ev_is_active (w))) 4784 if (expect_false (ev_is_active (w)))
3273 return; 4785 return;
3274 4786
3275 { 4787 {
3276 struct ev_loop *loop = w->other; 4788 EV_P = w->other;
3277 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4789 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3278 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4790 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3279 } 4791 }
3280 4792
3281 EV_FREQUENT_CHECK; 4793 EV_FREQUENT_CHECK;
… …
3296 4808
3297 EV_FREQUENT_CHECK; 4809 EV_FREQUENT_CHECK;
3298} 4810}
3299 4811
3300void 4812void
3301ev_embed_stop (EV_P_ ev_embed *w) 4813ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3302{ 4814{
3303 clear_pending (EV_A_ (W)w); 4815 clear_pending (EV_A_ (W)w);
3304 if (expect_false (!ev_is_active (w))) 4816 if (expect_false (!ev_is_active (w)))
3305 return; 4817 return;
3306 4818
… …
3308 4820
3309 ev_io_stop (EV_A_ &w->io); 4821 ev_io_stop (EV_A_ &w->io);
3310 ev_prepare_stop (EV_A_ &w->prepare); 4822 ev_prepare_stop (EV_A_ &w->prepare);
3311 ev_fork_stop (EV_A_ &w->fork); 4823 ev_fork_stop (EV_A_ &w->fork);
3312 4824
4825 ev_stop (EV_A_ (W)w);
4826
3313 EV_FREQUENT_CHECK; 4827 EV_FREQUENT_CHECK;
3314} 4828}
3315#endif 4829#endif
3316 4830
3317#if EV_FORK_ENABLE 4831#if EV_FORK_ENABLE
3318void 4832void
3319ev_fork_start (EV_P_ ev_fork *w) 4833ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3320{ 4834{
3321 if (expect_false (ev_is_active (w))) 4835 if (expect_false (ev_is_active (w)))
3322 return; 4836 return;
3323 4837
3324 EV_FREQUENT_CHECK; 4838 EV_FREQUENT_CHECK;
… …
3329 4843
3330 EV_FREQUENT_CHECK; 4844 EV_FREQUENT_CHECK;
3331} 4845}
3332 4846
3333void 4847void
3334ev_fork_stop (EV_P_ ev_fork *w) 4848ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3335{ 4849{
3336 clear_pending (EV_A_ (W)w); 4850 clear_pending (EV_A_ (W)w);
3337 if (expect_false (!ev_is_active (w))) 4851 if (expect_false (!ev_is_active (w)))
3338 return; 4852 return;
3339 4853
… …
3350 4864
3351 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
3352} 4866}
3353#endif 4867#endif
3354 4868
3355#if EV_ASYNC_ENABLE 4869#if EV_CLEANUP_ENABLE
3356void 4870void
3357ev_async_start (EV_P_ ev_async *w) 4871ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3358{ 4872{
3359 if (expect_false (ev_is_active (w))) 4873 if (expect_false (ev_is_active (w)))
3360 return; 4874 return;
4875
4876 EV_FREQUENT_CHECK;
4877
4878 ev_start (EV_A_ (W)w, ++cleanupcnt);
4879 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4880 cleanups [cleanupcnt - 1] = w;
4881
4882 /* cleanup watchers should never keep a refcount on the loop */
4883 ev_unref (EV_A);
4884 EV_FREQUENT_CHECK;
4885}
4886
4887void
4888ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4889{
4890 clear_pending (EV_A_ (W)w);
4891 if (expect_false (!ev_is_active (w)))
4892 return;
4893
4894 EV_FREQUENT_CHECK;
4895 ev_ref (EV_A);
4896
4897 {
4898 int active = ev_active (w);
4899
4900 cleanups [active - 1] = cleanups [--cleanupcnt];
4901 ev_active (cleanups [active - 1]) = active;
4902 }
4903
4904 ev_stop (EV_A_ (W)w);
4905
4906 EV_FREQUENT_CHECK;
4907}
4908#endif
4909
4910#if EV_ASYNC_ENABLE
4911void
4912ev_async_start (EV_P_ ev_async *w) EV_THROW
4913{
4914 if (expect_false (ev_is_active (w)))
4915 return;
4916
4917 w->sent = 0;
3361 4918
3362 evpipe_init (EV_A); 4919 evpipe_init (EV_A);
3363 4920
3364 EV_FREQUENT_CHECK; 4921 EV_FREQUENT_CHECK;
3365 4922
… …
3369 4926
3370 EV_FREQUENT_CHECK; 4927 EV_FREQUENT_CHECK;
3371} 4928}
3372 4929
3373void 4930void
3374ev_async_stop (EV_P_ ev_async *w) 4931ev_async_stop (EV_P_ ev_async *w) EV_THROW
3375{ 4932{
3376 clear_pending (EV_A_ (W)w); 4933 clear_pending (EV_A_ (W)w);
3377 if (expect_false (!ev_is_active (w))) 4934 if (expect_false (!ev_is_active (w)))
3378 return; 4935 return;
3379 4936
… …
3390 4947
3391 EV_FREQUENT_CHECK; 4948 EV_FREQUENT_CHECK;
3392} 4949}
3393 4950
3394void 4951void
3395ev_async_send (EV_P_ ev_async *w) 4952ev_async_send (EV_P_ ev_async *w) EV_THROW
3396{ 4953{
3397 w->sent = 1; 4954 w->sent = 1;
3398 evpipe_write (EV_A_ &gotasync); 4955 evpipe_write (EV_A_ &async_pending);
3399} 4956}
3400#endif 4957#endif
3401 4958
3402/*****************************************************************************/ 4959/*****************************************************************************/
3403 4960
… …
3437 4994
3438 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4995 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3439} 4996}
3440 4997
3441void 4998void
3442ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4999ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3443{ 5000{
3444 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5001 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3445 5002
3446 if (expect_false (!once)) 5003 if (expect_false (!once))
3447 { 5004 {
3448 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 5005 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3449 return; 5006 return;
3450 } 5007 }
3451 5008
3452 once->cb = cb; 5009 once->cb = cb;
3453 once->arg = arg; 5010 once->arg = arg;
… …
3468} 5025}
3469 5026
3470/*****************************************************************************/ 5027/*****************************************************************************/
3471 5028
3472#if EV_WALK_ENABLE 5029#if EV_WALK_ENABLE
5030ecb_cold
3473void 5031void
3474ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5032ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3475{ 5033{
3476 int i, j; 5034 int i, j;
3477 ev_watcher_list *wl, *wn; 5035 ev_watcher_list *wl, *wn;
3478 5036
3479 if (types & (EV_IO | EV_EMBED)) 5037 if (types & (EV_IO | EV_EMBED))
… …
3522 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5080 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3523#endif 5081#endif
3524 5082
3525#if EV_IDLE_ENABLE 5083#if EV_IDLE_ENABLE
3526 if (types & EV_IDLE) 5084 if (types & EV_IDLE)
3527 for (j = NUMPRI; i--; ) 5085 for (j = NUMPRI; j--; )
3528 for (i = idlecnt [j]; i--; ) 5086 for (i = idlecnt [j]; i--; )
3529 cb (EV_A_ EV_IDLE, idles [j][i]); 5087 cb (EV_A_ EV_IDLE, idles [j][i]);
3530#endif 5088#endif
3531 5089
3532#if EV_FORK_ENABLE 5090#if EV_FORK_ENABLE
… …
3540 if (types & EV_ASYNC) 5098 if (types & EV_ASYNC)
3541 for (i = asynccnt; i--; ) 5099 for (i = asynccnt; i--; )
3542 cb (EV_A_ EV_ASYNC, asyncs [i]); 5100 cb (EV_A_ EV_ASYNC, asyncs [i]);
3543#endif 5101#endif
3544 5102
5103#if EV_PREPARE_ENABLE
3545 if (types & EV_PREPARE) 5104 if (types & EV_PREPARE)
3546 for (i = preparecnt; i--; ) 5105 for (i = preparecnt; i--; )
3547#if EV_EMBED_ENABLE 5106# if EV_EMBED_ENABLE
3548 if (ev_cb (prepares [i]) != embed_prepare_cb) 5107 if (ev_cb (prepares [i]) != embed_prepare_cb)
3549#endif 5108# endif
3550 cb (EV_A_ EV_PREPARE, prepares [i]); 5109 cb (EV_A_ EV_PREPARE, prepares [i]);
5110#endif
3551 5111
5112#if EV_CHECK_ENABLE
3552 if (types & EV_CHECK) 5113 if (types & EV_CHECK)
3553 for (i = checkcnt; i--; ) 5114 for (i = checkcnt; i--; )
3554 cb (EV_A_ EV_CHECK, checks [i]); 5115 cb (EV_A_ EV_CHECK, checks [i]);
5116#endif
3555 5117
5118#if EV_SIGNAL_ENABLE
3556 if (types & EV_SIGNAL) 5119 if (types & EV_SIGNAL)
3557 for (i = 0; i < signalmax; ++i) 5120 for (i = 0; i < EV_NSIG - 1; ++i)
3558 for (wl = signals [i].head; wl; ) 5121 for (wl = signals [i].head; wl; )
3559 { 5122 {
3560 wn = wl->next; 5123 wn = wl->next;
3561 cb (EV_A_ EV_SIGNAL, wl); 5124 cb (EV_A_ EV_SIGNAL, wl);
3562 wl = wn; 5125 wl = wn;
3563 } 5126 }
5127#endif
3564 5128
5129#if EV_CHILD_ENABLE
3565 if (types & EV_CHILD) 5130 if (types & EV_CHILD)
3566 for (i = EV_PID_HASHSIZE; i--; ) 5131 for (i = (EV_PID_HASHSIZE); i--; )
3567 for (wl = childs [i]; wl; ) 5132 for (wl = childs [i]; wl; )
3568 { 5133 {
3569 wn = wl->next; 5134 wn = wl->next;
3570 cb (EV_A_ EV_CHILD, wl); 5135 cb (EV_A_ EV_CHILD, wl);
3571 wl = wn; 5136 wl = wn;
3572 } 5137 }
5138#endif
3573/* EV_STAT 0x00001000 /* stat data changed */ 5139/* EV_STAT 0x00001000 /* stat data changed */
3574/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5140/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3575} 5141}
3576#endif 5142#endif
3577 5143
3578#if EV_MULTIPLICITY 5144#if EV_MULTIPLICITY
3579 #include "ev_wrap.h" 5145 #include "ev_wrap.h"
3580#endif 5146#endif
3581 5147
3582#ifdef __cplusplus
3583}
3584#endif
3585

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