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Comparing libev/ev.c (file contents):
Revision 1.325 by root, Sun Jan 24 12:31:55 2010 UTC vs.
Revision 1.480 by root, Thu Feb 18 04:48:05 2016 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
114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 121# ifndef EV_USE_KQUEUE
117# else 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
158#include <string.h> 168#include <string.h>
159#include <fcntl.h> 169#include <fcntl.h>
160#include <stddef.h> 170#include <stddef.h>
161 171
… …
163 173
164#include <assert.h> 174#include <assert.h>
165#include <errno.h> 175#include <errno.h>
166#include <sys/types.h> 176#include <sys/types.h>
167#include <time.h> 177#include <time.h>
178#include <limits.h>
168 179
169#include <signal.h> 180#include <signal.h>
170 181
171#ifdef EV_H 182#ifdef EV_H
172# include EV_H 183# include EV_H
173#else 184#else
174# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
175#endif 197#endif
176 198
177#ifndef _WIN32 199#ifndef _WIN32
178# include <sys/time.h> 200# include <sys/time.h>
179# include <sys/wait.h> 201# include <sys/wait.h>
180# include <unistd.h> 202# include <unistd.h>
181#else 203#else
182# include <io.h> 204# include <io.h>
183# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
184# include <windows.h> 207# include <windows.h>
185# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
186# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
187# endif 210# endif
211# undef EV_AVOID_STDIO
188#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
189 221
190/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
191 223
192/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG) 225#if defined EV_NSIG
194/* use what's provided */ 226/* use what's provided */
195#elif defined (NSIG) 227#elif defined NSIG
196# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 229#elif defined _NSIG
198# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX) 231#elif defined SIGMAX
200# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX) 233#elif defined SIG_MAX
202# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
204# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG) 237#elif defined MAXSIG
206# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 239#elif defined MAX_SIG
208# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 243#elif defined _sys_nsig
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 245#else
214# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
215/* to make it compile regardless, just remove the above line */ 247#endif
216# define EV_NSIG 65 248
249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
217#endif 251#endif
218 252
219#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
221# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 256# else
223# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
224# endif 258# endif
225#endif 259#endif
226 260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
227#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 272# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 273# else
231# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
232# endif 275# endif
233#endif 276#endif
234 277
… …
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 279# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 280#endif
238 281
239#ifndef EV_USE_NANOSLEEP 282#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 283# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 284# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 285# else
243# define EV_USE_NANOSLEEP 0 286# define EV_USE_NANOSLEEP 0
244# endif 287# endif
245#endif 288#endif
246 289
247#ifndef EV_USE_SELECT 290#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 291# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 292#endif
250 293
251#ifndef EV_USE_POLL 294#ifndef EV_USE_POLL
252# ifdef _WIN32 295# ifdef _WIN32
253# define EV_USE_POLL 0 296# define EV_USE_POLL 0
254# else 297# else
255# define EV_USE_POLL 1 298# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 299# endif
257#endif 300#endif
258 301
259#ifndef EV_USE_EPOLL 302#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 304# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 305# else
263# define EV_USE_EPOLL 0 306# define EV_USE_EPOLL 0
264# endif 307# endif
265#endif 308#endif
266 309
… …
272# define EV_USE_PORT 0 315# define EV_USE_PORT 0
273#endif 316#endif
274 317
275#ifndef EV_USE_INOTIFY 318#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 320# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 321# else
279# define EV_USE_INOTIFY 0 322# define EV_USE_INOTIFY 0
280# endif 323# endif
281#endif 324#endif
282 325
283#ifndef EV_PID_HASHSIZE 326#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 327# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 328#endif
290 329
291#ifndef EV_INOTIFY_HASHSIZE 330#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 331# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 332#endif
298 333
299#ifndef EV_USE_EVENTFD 334#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 335# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 336# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 337# else
303# define EV_USE_EVENTFD 0 338# define EV_USE_EVENTFD 0
304# endif 339# endif
305#endif 340#endif
306 341
307#ifndef EV_USE_SIGNALFD 342#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 343# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 344# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 345# else
311# define EV_USE_SIGNALFD 0 346# define EV_USE_SIGNALFD 0
312# endif 347# endif
313#endif 348#endif
314 349
… …
317# define EV_USE_4HEAP 1 352# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 353# define EV_HEAP_CACHE_AT 1
319#endif 354#endif
320 355
321#ifndef EV_VERIFY 356#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 357# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 358#endif
324 359
325#ifndef EV_USE_4HEAP 360#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 361# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 362#endif
328 363
329#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif
367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
331#endif 382#endif
332 383
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h> 387# include <sys/syscall.h>
337# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
341# else 392# else
… …
344# endif 395# endif
345#endif 396#endif
346 397
347/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
348 399
349#ifdef _AIX
350/* AIX has a completely broken poll.h header */
351# undef EV_USE_POLL
352# define EV_USE_POLL 0
353#endif
354
355#ifndef CLOCK_MONOTONIC 400#ifndef CLOCK_MONOTONIC
356# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
358#endif 403#endif
359 404
… …
366# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
367# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
368#endif 413#endif
369 414
370#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
371# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
372# include <sys/select.h> 418# include <sys/select.h>
373# endif 419# endif
374#endif 420#endif
375 421
376#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
377# include <sys/utsname.h>
378# include <sys/statfs.h> 423# include <sys/statfs.h>
379# include <sys/inotify.h> 424# include <sys/inotify.h>
380/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
381# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
382# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
383# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
384# endif 429# endif
385#endif
386
387#if EV_SELECT_IS_WINSOCKET
388# include <winsock.h>
389#endif 430#endif
390 431
391#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
392/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
393# include <stdint.h> 434# include <stdint.h>
… …
399# define EFD_CLOEXEC O_CLOEXEC 440# define EFD_CLOEXEC O_CLOEXEC
400# else 441# else
401# define EFD_CLOEXEC 02000000 442# define EFD_CLOEXEC 02000000
402# endif 443# endif
403# endif 444# endif
404# ifdef __cplusplus
405extern "C" {
406# endif
407int eventfd (unsigned int initval, int flags); 445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
408# ifdef __cplusplus
409}
410# endif
411#endif 446#endif
412 447
413#if EV_USE_SIGNALFD 448#if EV_USE_SIGNALFD
414/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
415# include <stdint.h> 450# include <stdint.h>
… …
421# define SFD_CLOEXEC O_CLOEXEC 456# define SFD_CLOEXEC O_CLOEXEC
422# else 457# else
423# define SFD_CLOEXEC 02000000 458# define SFD_CLOEXEC 02000000
424# endif 459# endif
425# endif 460# endif
426# ifdef __cplusplus
427extern "C" {
428# endif
429int signalfd (int fd, const sigset_t *mask, int flags); 461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430 462
431struct signalfd_siginfo 463struct signalfd_siginfo
432{ 464{
433 uint32_t ssi_signo; 465 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)]; 466 char pad[128 - sizeof (uint32_t)];
435}; 467};
436# ifdef __cplusplus
437}
438# endif 468#endif
439#endif
440
441 469
442/**/ 470/**/
443 471
444#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
445# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 473# define EV_FREQUENT_CHECK ev_verify (EV_A)
446#else 474#else
447# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
448#endif 476#endif
449 477
450/* 478/*
451 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
452 * It is added to ev_rt_now when scheduling periodics
453 * to ensure progress, time-wise, even when rounding
454 * errors are against us.
455 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
456 * Better solutions welcome.
457 */ 481 */
458#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
459 484
460#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
461#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
462 487
488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010005
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 546 #if __GNUC__
547 typedef signed long long int64_t;
548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
562#else
563 #include <inttypes.h>
564 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8
566 #else
567 #define ECB_PTRSIZE 4
568 #endif
569#endif
570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
580 #endif
581#endif
582
583/* many compilers define _GNUC_ to some versions but then only implement
584 * what their idiot authors think are the "more important" extensions,
585 * causing enormous grief in return for some better fake benchmark numbers.
586 * or so.
587 * we try to detect these and simply assume they are not gcc - if they have
588 * an issue with that they should have done it right in the first place.
589 */
590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
591 #define ECB_GCC_VERSION(major,minor) 0
592#else
593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
610#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
623
624#if ECB_CPP
625 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END }
628#else
629 #define ECB_EXTERN_C extern
630 #define ECB_EXTERN_C_BEG
631 #define ECB_EXTERN_C_END
632#endif
633
634/*****************************************************************************/
635
636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
638
639#if ECB_NO_THREADS
640 #define ECB_NO_SMP 1
641#endif
642
643#if ECB_NO_SMP
644 #define ECB_MEMORY_FENCE do { } while (0)
645#endif
646
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP
649 #include <builtins.h>
650#endif
651
652#if 1400 <= _MSC_VER
653 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
654#endif
655
656#ifndef ECB_MEMORY_FENCE
657 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
658 #if __i386 || __i386__
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
662 #elif ECB_GCC_AMD64
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
667 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
668 #elif defined __ARM_ARCH_2__ \
669 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
670 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
671 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
672 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
673 || defined __ARM_ARCH_5TEJ__
674 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
675 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
676 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
677 || defined __ARM_ARCH_6T2__
678 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
679 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
680 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
681 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
682 #elif __aarch64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
684 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
686 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
687 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
688 #elif defined __s390__ || defined __s390x__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
690 #elif defined __mips__
691 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
692 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
693 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
694 #elif defined __alpha__
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
696 #elif defined __hppa__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
698 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
699 #elif defined __ia64__
700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
701 #elif defined __m68k__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
703 #elif defined __m88k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
705 #elif defined __sh__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
707 #endif
708 #endif
709#endif
710
711#ifndef ECB_MEMORY_FENCE
712 #if ECB_GCC_VERSION(4,7)
713 /* see comment below (stdatomic.h) about the C11 memory model. */
714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
716 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
717
718 #elif ECB_CLANG_EXTENSION(c_atomic)
719 /* see comment below (stdatomic.h) about the C11 memory model. */
720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
722 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
723
724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
725 #define ECB_MEMORY_FENCE __sync_synchronize ()
726 #elif _MSC_VER >= 1500 /* VC++ 2008 */
727 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
728 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
729 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
730 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
731 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
732 #elif _MSC_VER >= 1400 /* VC++ 2005 */
733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
734 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
735 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
737 #elif defined _WIN32
738 #include <WinNT.h>
739 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
740 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
741 #include <mbarrier.h>
742 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
743 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
744 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
745 #elif __xlC__
746 #define ECB_MEMORY_FENCE __sync ()
747 #endif
748#endif
749
750#ifndef ECB_MEMORY_FENCE
751 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
752 /* we assume that these memory fences work on all variables/all memory accesses, */
753 /* not just C11 atomics and atomic accesses */
754 #include <stdatomic.h>
755 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
756 /* any fence other than seq_cst, which isn't very efficient for us. */
757 /* Why that is, we don't know - either the C11 memory model is quite useless */
758 /* for most usages, or gcc and clang have a bug */
759 /* I *currently* lean towards the latter, and inefficiently implement */
760 /* all three of ecb's fences as a seq_cst fence */
761 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
762 /* for all __atomic_thread_fence's except seq_cst */
763 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
764 #endif
765#endif
766
767#ifndef ECB_MEMORY_FENCE
768 #if !ECB_AVOID_PTHREADS
769 /*
770 * if you get undefined symbol references to pthread_mutex_lock,
771 * or failure to find pthread.h, then you should implement
772 * the ECB_MEMORY_FENCE operations for your cpu/compiler
773 * OR provide pthread.h and link against the posix thread library
774 * of your system.
775 */
776 #include <pthread.h>
777 #define ECB_NEEDS_PTHREADS 1
778 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
779
780 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
781 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
782 #endif
783#endif
784
785#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
786 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
787#endif
788
789#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
791#endif
792
793/*****************************************************************************/
794
795#if ECB_CPP
796 #define ecb_inline static inline
797#elif ECB_GCC_VERSION(2,5)
798 #define ecb_inline static __inline__
799#elif ECB_C99
800 #define ecb_inline static inline
801#else
802 #define ecb_inline static
803#endif
804
805#if ECB_GCC_VERSION(3,3)
806 #define ecb_restrict __restrict__
807#elif ECB_C99
808 #define ecb_restrict restrict
809#else
810 #define ecb_restrict
811#endif
812
813typedef int ecb_bool;
814
815#define ECB_CONCAT_(a, b) a ## b
816#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
817#define ECB_STRINGIFY_(a) # a
818#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
819#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
820
821#define ecb_function_ ecb_inline
822
823#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
824 #define ecb_attribute(attrlist) __attribute__ (attrlist)
825#else
826 #define ecb_attribute(attrlist)
827#endif
828
829#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
830 #define ecb_is_constant(expr) __builtin_constant_p (expr)
831#else
832 /* possible C11 impl for integral types
833 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
834 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
835
836 #define ecb_is_constant(expr) 0
837#endif
838
839#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
464# define expect(expr,value) __builtin_expect ((expr),(value)) 840 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
465# define noinline __attribute__ ((noinline))
466#else 841#else
467# define expect(expr,value) (expr) 842 #define ecb_expect(expr,value) (expr)
468# define noinline
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470# define inline
471# endif 843#endif
472#endif
473 844
845#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
846 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
847#else
848 #define ecb_prefetch(addr,rw,locality)
849#endif
850
851/* no emulation for ecb_decltype */
852#if ECB_CPP11
853 // older implementations might have problems with decltype(x)::type, work around it
854 template<class T> struct ecb_decltype_t { typedef T type; };
855 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
856#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
857 #define ecb_decltype(x) __typeof__ (x)
858#endif
859
860#if _MSC_VER >= 1300
861 #define ecb_deprecated __declspec (deprecated)
862#else
863 #define ecb_deprecated ecb_attribute ((__deprecated__))
864#endif
865
866#if _MSC_VER >= 1500
867 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
868#elif ECB_GCC_VERSION(4,5)
869 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
870#else
871 #define ecb_deprecated_message(msg) ecb_deprecated
872#endif
873
874#if _MSC_VER >= 1400
875 #define ecb_noinline __declspec (noinline)
876#else
877 #define ecb_noinline ecb_attribute ((__noinline__))
878#endif
879
880#define ecb_unused ecb_attribute ((__unused__))
881#define ecb_const ecb_attribute ((__const__))
882#define ecb_pure ecb_attribute ((__pure__))
883
884#if ECB_C11 || __IBMC_NORETURN
885 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
886 #define ecb_noreturn _Noreturn
887#elif ECB_CPP11
888 #define ecb_noreturn [[noreturn]]
889#elif _MSC_VER >= 1200
890 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
891 #define ecb_noreturn __declspec (noreturn)
892#else
893 #define ecb_noreturn ecb_attribute ((__noreturn__))
894#endif
895
896#if ECB_GCC_VERSION(4,3)
897 #define ecb_artificial ecb_attribute ((__artificial__))
898 #define ecb_hot ecb_attribute ((__hot__))
899 #define ecb_cold ecb_attribute ((__cold__))
900#else
901 #define ecb_artificial
902 #define ecb_hot
903 #define ecb_cold
904#endif
905
906/* put around conditional expressions if you are very sure that the */
907/* expression is mostly true or mostly false. note that these return */
908/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 909#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 910#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
911/* for compatibility to the rest of the world */
912#define ecb_likely(expr) ecb_expect_true (expr)
913#define ecb_unlikely(expr) ecb_expect_false (expr)
914
915/* count trailing zero bits and count # of one bits */
916#if ECB_GCC_VERSION(3,4) \
917 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
918 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
919 && ECB_CLANG_BUILTIN(__builtin_popcount))
920 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
921 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
922 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
923 #define ecb_ctz32(x) __builtin_ctz (x)
924 #define ecb_ctz64(x) __builtin_ctzll (x)
925 #define ecb_popcount32(x) __builtin_popcount (x)
926 /* no popcountll */
927#else
928 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
929 ecb_function_ ecb_const int
930 ecb_ctz32 (uint32_t x)
931 {
932#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
933 unsigned long r;
934 _BitScanForward (&r, x);
935 return (int)r;
936#else
937 int r = 0;
938
939 x &= ~x + 1; /* this isolates the lowest bit */
940
941#if ECB_branchless_on_i386
942 r += !!(x & 0xaaaaaaaa) << 0;
943 r += !!(x & 0xcccccccc) << 1;
944 r += !!(x & 0xf0f0f0f0) << 2;
945 r += !!(x & 0xff00ff00) << 3;
946 r += !!(x & 0xffff0000) << 4;
947#else
948 if (x & 0xaaaaaaaa) r += 1;
949 if (x & 0xcccccccc) r += 2;
950 if (x & 0xf0f0f0f0) r += 4;
951 if (x & 0xff00ff00) r += 8;
952 if (x & 0xffff0000) r += 16;
953#endif
954
955 return r;
956#endif
957 }
958
959 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
960 ecb_function_ ecb_const int
961 ecb_ctz64 (uint64_t x)
962 {
963#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
964 unsigned long r;
965 _BitScanForward64 (&r, x);
966 return (int)r;
967#else
968 int shift = x & 0xffffffff ? 0 : 32;
969 return ecb_ctz32 (x >> shift) + shift;
970#endif
971 }
972
973 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
974 ecb_function_ ecb_const int
975 ecb_popcount32 (uint32_t x)
976 {
977 x -= (x >> 1) & 0x55555555;
978 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
979 x = ((x >> 4) + x) & 0x0f0f0f0f;
980 x *= 0x01010101;
981
982 return x >> 24;
983 }
984
985 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
986 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
987 {
988#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
989 unsigned long r;
990 _BitScanReverse (&r, x);
991 return (int)r;
992#else
993 int r = 0;
994
995 if (x >> 16) { x >>= 16; r += 16; }
996 if (x >> 8) { x >>= 8; r += 8; }
997 if (x >> 4) { x >>= 4; r += 4; }
998 if (x >> 2) { x >>= 2; r += 2; }
999 if (x >> 1) { r += 1; }
1000
1001 return r;
1002#endif
1003 }
1004
1005 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1006 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1007 {
1008#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1009 unsigned long r;
1010 _BitScanReverse64 (&r, x);
1011 return (int)r;
1012#else
1013 int r = 0;
1014
1015 if (x >> 32) { x >>= 32; r += 32; }
1016
1017 return r + ecb_ld32 (x);
1018#endif
1019 }
1020#endif
1021
1022ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1023ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1024ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1026
1027ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1028ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1029{
1030 return ( (x * 0x0802U & 0x22110U)
1031 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1032}
1033
1034ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1035ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1036{
1037 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1038 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1039 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1040 x = ( x >> 8 ) | ( x << 8);
1041
1042 return x;
1043}
1044
1045ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1046ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1047{
1048 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1049 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1050 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1051 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1052 x = ( x >> 16 ) | ( x << 16);
1053
1054 return x;
1055}
1056
1057/* popcount64 is only available on 64 bit cpus as gcc builtin */
1058/* so for this version we are lazy */
1059ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1060ecb_function_ ecb_const int
1061ecb_popcount64 (uint64_t x)
1062{
1063 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1064}
1065
1066ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1067ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1068ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1069ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1070ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1071ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1072ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1073ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1074
1075ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1076ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1077ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1078ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1079ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1080ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1081ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1082ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1083
1084#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1085 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1086 #define ecb_bswap16(x) __builtin_bswap16 (x)
1087 #else
1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1089 #endif
1090 #define ecb_bswap32(x) __builtin_bswap32 (x)
1091 #define ecb_bswap64(x) __builtin_bswap64 (x)
1092#elif _MSC_VER
1093 #include <stdlib.h>
1094 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1095 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1096 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1097#else
1098 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1099 ecb_function_ ecb_const uint16_t
1100 ecb_bswap16 (uint16_t x)
1101 {
1102 return ecb_rotl16 (x, 8);
1103 }
1104
1105 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1106 ecb_function_ ecb_const uint32_t
1107 ecb_bswap32 (uint32_t x)
1108 {
1109 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1110 }
1111
1112 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1113 ecb_function_ ecb_const uint64_t
1114 ecb_bswap64 (uint64_t x)
1115 {
1116 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1117 }
1118#endif
1119
1120#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1121 #define ecb_unreachable() __builtin_unreachable ()
1122#else
1123 /* this seems to work fine, but gcc always emits a warning for it :/ */
1124 ecb_inline ecb_noreturn void ecb_unreachable (void);
1125 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1126#endif
1127
1128/* try to tell the compiler that some condition is definitely true */
1129#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1130
1131ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1132ecb_inline ecb_const uint32_t
1133ecb_byteorder_helper (void)
1134{
1135 /* the union code still generates code under pressure in gcc, */
1136 /* but less than using pointers, and always seems to */
1137 /* successfully return a constant. */
1138 /* the reason why we have this horrible preprocessor mess */
1139 /* is to avoid it in all cases, at least on common architectures */
1140 /* or when using a recent enough gcc version (>= 4.6) */
1141#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1142 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1143 #define ECB_LITTLE_ENDIAN 1
1144 return 0x44332211;
1145#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1146 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1147 #define ECB_BIG_ENDIAN 1
1148 return 0x11223344;
1149#else
1150 union
1151 {
1152 uint8_t c[4];
1153 uint32_t u;
1154 } u = { 0x11, 0x22, 0x33, 0x44 };
1155 return u.u;
1156#endif
1157}
1158
1159ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1160ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1161ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1162ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1163
1164#if ECB_GCC_VERSION(3,0) || ECB_C99
1165 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1166#else
1167 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1168#endif
1169
1170#if ECB_CPP
1171 template<typename T>
1172 static inline T ecb_div_rd (T val, T div)
1173 {
1174 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1175 }
1176 template<typename T>
1177 static inline T ecb_div_ru (T val, T div)
1178 {
1179 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1180 }
1181#else
1182 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1183 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1184#endif
1185
1186#if ecb_cplusplus_does_not_suck
1187 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1188 template<typename T, int N>
1189 static inline int ecb_array_length (const T (&arr)[N])
1190 {
1191 return N;
1192 }
1193#else
1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1195#endif
1196
1197ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1198ecb_function_ ecb_const uint32_t
1199ecb_binary16_to_binary32 (uint32_t x)
1200{
1201 unsigned int s = (x & 0x8000) << (31 - 15);
1202 int e = (x >> 10) & 0x001f;
1203 unsigned int m = x & 0x03ff;
1204
1205 if (ecb_expect_false (e == 31))
1206 /* infinity or NaN */
1207 e = 255 - (127 - 15);
1208 else if (ecb_expect_false (!e))
1209 {
1210 if (ecb_expect_true (!m))
1211 /* zero, handled by code below by forcing e to 0 */
1212 e = 0 - (127 - 15);
1213 else
1214 {
1215 /* subnormal, renormalise */
1216 unsigned int s = 10 - ecb_ld32 (m);
1217
1218 m = (m << s) & 0x3ff; /* mask implicit bit */
1219 e -= s - 1;
1220 }
1221 }
1222
1223 /* e and m now are normalised, or zero, (or inf or nan) */
1224 e += 127 - 15;
1225
1226 return s | (e << 23) | (m << (23 - 10));
1227}
1228
1229ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1230ecb_function_ ecb_const uint16_t
1231ecb_binary32_to_binary16 (uint32_t x)
1232{
1233 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1234 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1235 unsigned int m = x & 0x007fffff;
1236
1237 x &= 0x7fffffff;
1238
1239 /* if it's within range of binary16 normals, use fast path */
1240 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1241 {
1242 /* mantissa round-to-even */
1243 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1244
1245 /* handle overflow */
1246 if (ecb_expect_false (m >= 0x00800000))
1247 {
1248 m >>= 1;
1249 e += 1;
1250 }
1251
1252 return s | (e << 10) | (m >> (23 - 10));
1253 }
1254
1255 /* handle large numbers and infinity */
1256 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1257 return s | 0x7c00;
1258
1259 /* handle zero, subnormals and small numbers */
1260 if (ecb_expect_true (x < 0x38800000))
1261 {
1262 /* zero */
1263 if (ecb_expect_true (!x))
1264 return s;
1265
1266 /* handle subnormals */
1267
1268 /* too small, will be zero */
1269 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1270 return s;
1271
1272 m |= 0x00800000; /* make implicit bit explicit */
1273
1274 /* very tricky - we need to round to the nearest e (+10) bit value */
1275 {
1276 unsigned int bits = 14 - e;
1277 unsigned int half = (1 << (bits - 1)) - 1;
1278 unsigned int even = (m >> bits) & 1;
1279
1280 /* if this overflows, we will end up with a normalised number */
1281 m = (m + half + even) >> bits;
1282 }
1283
1284 return s | m;
1285 }
1286
1287 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1288 m >>= 13;
1289
1290 return s | 0x7c00 | m | !m;
1291}
1292
1293/*******************************************************************************/
1294/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1295
1296/* basically, everything uses "ieee pure-endian" floating point numbers */
1297/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1298#if 0 \
1299 || __i386 || __i386__ \
1300 || ECB_GCC_AMD64 \
1301 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1302 || defined __s390__ || defined __s390x__ \
1303 || defined __mips__ \
1304 || defined __alpha__ \
1305 || defined __hppa__ \
1306 || defined __ia64__ \
1307 || defined __m68k__ \
1308 || defined __m88k__ \
1309 || defined __sh__ \
1310 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1311 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1312 || defined __aarch64__
1313 #define ECB_STDFP 1
1314 #include <string.h> /* for memcpy */
1315#else
1316 #define ECB_STDFP 0
1317#endif
1318
1319#ifndef ECB_NO_LIBM
1320
1321 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1322
1323 /* only the oldest of old doesn't have this one. solaris. */
1324 #ifdef INFINITY
1325 #define ECB_INFINITY INFINITY
1326 #else
1327 #define ECB_INFINITY HUGE_VAL
1328 #endif
1329
1330 #ifdef NAN
1331 #define ECB_NAN NAN
1332 #else
1333 #define ECB_NAN ECB_INFINITY
1334 #endif
1335
1336 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1337 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1338 #define ecb_frexpf(x,e) frexpf ((x), (e))
1339 #else
1340 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1341 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1342 #endif
1343
1344 /* convert a float to ieee single/binary32 */
1345 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1346 ecb_function_ ecb_const uint32_t
1347 ecb_float_to_binary32 (float x)
1348 {
1349 uint32_t r;
1350
1351 #if ECB_STDFP
1352 memcpy (&r, &x, 4);
1353 #else
1354 /* slow emulation, works for anything but -0 */
1355 uint32_t m;
1356 int e;
1357
1358 if (x == 0e0f ) return 0x00000000U;
1359 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1360 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1361 if (x != x ) return 0x7fbfffffU;
1362
1363 m = ecb_frexpf (x, &e) * 0x1000000U;
1364
1365 r = m & 0x80000000U;
1366
1367 if (r)
1368 m = -m;
1369
1370 if (e <= -126)
1371 {
1372 m &= 0xffffffU;
1373 m >>= (-125 - e);
1374 e = -126;
1375 }
1376
1377 r |= (e + 126) << 23;
1378 r |= m & 0x7fffffU;
1379 #endif
1380
1381 return r;
1382 }
1383
1384 /* converts an ieee single/binary32 to a float */
1385 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1386 ecb_function_ ecb_const float
1387 ecb_binary32_to_float (uint32_t x)
1388 {
1389 float r;
1390
1391 #if ECB_STDFP
1392 memcpy (&r, &x, 4);
1393 #else
1394 /* emulation, only works for normals and subnormals and +0 */
1395 int neg = x >> 31;
1396 int e = (x >> 23) & 0xffU;
1397
1398 x &= 0x7fffffU;
1399
1400 if (e)
1401 x |= 0x800000U;
1402 else
1403 e = 1;
1404
1405 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1406 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1407
1408 r = neg ? -r : r;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* convert a double to ieee double/binary64 */
1415 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1416 ecb_function_ ecb_const uint64_t
1417 ecb_double_to_binary64 (double x)
1418 {
1419 uint64_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 8);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint64_t m;
1426 int e;
1427
1428 if (x == 0e0 ) return 0x0000000000000000U;
1429 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1430 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1431 if (x != x ) return 0X7ff7ffffffffffffU;
1432
1433 m = frexp (x, &e) * 0x20000000000000U;
1434
1435 r = m & 0x8000000000000000;;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -1022)
1441 {
1442 m &= 0x1fffffffffffffU;
1443 m >>= (-1021 - e);
1444 e = -1022;
1445 }
1446
1447 r |= ((uint64_t)(e + 1022)) << 52;
1448 r |= m & 0xfffffffffffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee double/binary64 to a double */
1455 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1456 ecb_function_ ecb_const double
1457 ecb_binary64_to_double (uint64_t x)
1458 {
1459 double r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 8);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 63;
1466 int e = (x >> 52) & 0x7ffU;
1467
1468 x &= 0xfffffffffffffU;
1469
1470 if (e)
1471 x |= 0x10000000000000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1476 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a float to ieee half/binary16 */
1485 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1486 ecb_function_ ecb_const uint16_t
1487 ecb_float_to_binary16 (float x)
1488 {
1489 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1490 }
1491
1492 /* convert an ieee half/binary16 to float */
1493 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1494 ecb_function_ ecb_const float
1495 ecb_binary16_to_float (uint16_t x)
1496 {
1497 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1498 }
1499
1500#endif
1501
1502#endif
1503
1504/* ECB.H END */
1505
1506#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1507/* if your architecture doesn't need memory fences, e.g. because it is
1508 * single-cpu/core, or if you use libev in a project that doesn't use libev
1509 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1510 * libev, in which cases the memory fences become nops.
1511 * alternatively, you can remove this #error and link against libpthread,
1512 * which will then provide the memory fences.
1513 */
1514# error "memory fences not defined for your architecture, please report"
1515#endif
1516
1517#ifndef ECB_MEMORY_FENCE
1518# define ECB_MEMORY_FENCE do { } while (0)
1519# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1521#endif
1522
1523#define expect_false(cond) ecb_expect_false (cond)
1524#define expect_true(cond) ecb_expect_true (cond)
1525#define noinline ecb_noinline
1526
476#define inline_size static inline 1527#define inline_size ecb_inline
477 1528
478#if EV_MINIMAL 1529#if EV_FEATURE_CODE
479# define inline_speed static noinline
480#else
481# define inline_speed static inline 1530# define inline_speed ecb_inline
1531#else
1532# define inline_speed noinline static
482#endif 1533#endif
483 1534
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485 1536
486#if EV_MINPRI == EV_MAXPRI 1537#if EV_MINPRI == EV_MAXPRI
… …
499#define ev_active(w) ((W)(w))->active 1550#define ev_active(w) ((W)(w))->active
500#define ev_at(w) ((WT)(w))->at 1551#define ev_at(w) ((WT)(w))->at
501 1552
502#if EV_USE_REALTIME 1553#if EV_USE_REALTIME
503/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1554/* sig_atomic_t is used to avoid per-thread variables or locking but still */
504/* giving it a reasonably high chance of working on typical architetcures */ 1555/* giving it a reasonably high chance of working on typical architectures */
505static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1556static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
506#endif 1557#endif
507 1558
508#if EV_USE_MONOTONIC 1559#if EV_USE_MONOTONIC
509static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1560static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
523# include "ev_win32.c" 1574# include "ev_win32.c"
524#endif 1575#endif
525 1576
526/*****************************************************************************/ 1577/*****************************************************************************/
527 1578
1579/* define a suitable floor function (only used by periodics atm) */
1580
1581#if EV_USE_FLOOR
1582# include <math.h>
1583# define ev_floor(v) floor (v)
1584#else
1585
1586#include <float.h>
1587
1588/* a floor() replacement function, should be independent of ev_tstamp type */
1589noinline
1590static ev_tstamp
1591ev_floor (ev_tstamp v)
1592{
1593 /* the choice of shift factor is not terribly important */
1594#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1595 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1596#else
1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1598#endif
1599
1600 /* argument too large for an unsigned long? */
1601 if (expect_false (v >= shift))
1602 {
1603 ev_tstamp f;
1604
1605 if (v == v - 1.)
1606 return v; /* very large number */
1607
1608 f = shift * ev_floor (v * (1. / shift));
1609 return f + ev_floor (v - f);
1610 }
1611
1612 /* special treatment for negative args? */
1613 if (expect_false (v < 0.))
1614 {
1615 ev_tstamp f = -ev_floor (-v);
1616
1617 return f - (f == v ? 0 : 1);
1618 }
1619
1620 /* fits into an unsigned long */
1621 return (unsigned long)v;
1622}
1623
1624#endif
1625
1626/*****************************************************************************/
1627
1628#ifdef __linux
1629# include <sys/utsname.h>
1630#endif
1631
1632noinline ecb_cold
1633static unsigned int
1634ev_linux_version (void)
1635{
1636#ifdef __linux
1637 unsigned int v = 0;
1638 struct utsname buf;
1639 int i;
1640 char *p = buf.release;
1641
1642 if (uname (&buf))
1643 return 0;
1644
1645 for (i = 3+1; --i; )
1646 {
1647 unsigned int c = 0;
1648
1649 for (;;)
1650 {
1651 if (*p >= '0' && *p <= '9')
1652 c = c * 10 + *p++ - '0';
1653 else
1654 {
1655 p += *p == '.';
1656 break;
1657 }
1658 }
1659
1660 v = (v << 8) | c;
1661 }
1662
1663 return v;
1664#else
1665 return 0;
1666#endif
1667}
1668
1669/*****************************************************************************/
1670
1671#if EV_AVOID_STDIO
1672noinline ecb_cold
1673static void
1674ev_printerr (const char *msg)
1675{
1676 write (STDERR_FILENO, msg, strlen (msg));
1677}
1678#endif
1679
528static void (*syserr_cb)(const char *msg); 1680static void (*syserr_cb)(const char *msg) EV_THROW;
529 1681
1682ecb_cold
530void 1683void
531ev_set_syserr_cb (void (*cb)(const char *msg)) 1684ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
532{ 1685{
533 syserr_cb = cb; 1686 syserr_cb = cb;
534} 1687}
535 1688
536static void noinline 1689noinline ecb_cold
1690static void
537ev_syserr (const char *msg) 1691ev_syserr (const char *msg)
538{ 1692{
539 if (!msg) 1693 if (!msg)
540 msg = "(libev) system error"; 1694 msg = "(libev) system error";
541 1695
542 if (syserr_cb) 1696 if (syserr_cb)
543 syserr_cb (msg); 1697 syserr_cb (msg);
544 else 1698 else
545 { 1699 {
1700#if EV_AVOID_STDIO
1701 ev_printerr (msg);
1702 ev_printerr (": ");
1703 ev_printerr (strerror (errno));
1704 ev_printerr ("\n");
1705#else
546 perror (msg); 1706 perror (msg);
1707#endif
547 abort (); 1708 abort ();
548 } 1709 }
549} 1710}
550 1711
551static void * 1712static void *
552ev_realloc_emul (void *ptr, long size) 1713ev_realloc_emul (void *ptr, long size) EV_THROW
553{ 1714{
554 /* some systems, notably openbsd and darwin, fail to properly 1715 /* some systems, notably openbsd and darwin, fail to properly
555 * implement realloc (x, 0) (as required by both ansi c-98 and 1716 * implement realloc (x, 0) (as required by both ansi c-89 and
556 * the single unix specification, so work around them here. 1717 * the single unix specification, so work around them here.
1718 * recently, also (at least) fedora and debian started breaking it,
1719 * despite documenting it otherwise.
557 */ 1720 */
558 1721
559 if (size) 1722 if (size)
560 return realloc (ptr, size); 1723 return realloc (ptr, size);
561 1724
562 free (ptr); 1725 free (ptr);
563 return 0; 1726 return 0;
564} 1727}
565 1728
566static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1729static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
567 1730
1731ecb_cold
568void 1732void
569ev_set_allocator (void *(*cb)(void *ptr, long size)) 1733ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
570{ 1734{
571 alloc = cb; 1735 alloc = cb;
572} 1736}
573 1737
574inline_speed void * 1738inline_speed void *
… …
576{ 1740{
577 ptr = alloc (ptr, size); 1741 ptr = alloc (ptr, size);
578 1742
579 if (!ptr && size) 1743 if (!ptr && size)
580 { 1744 {
1745#if EV_AVOID_STDIO
1746 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1747#else
581 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1748 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1749#endif
582 abort (); 1750 abort ();
583 } 1751 }
584 1752
585 return ptr; 1753 return ptr;
586} 1754}
… …
602 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1770 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
603 unsigned char unused; 1771 unsigned char unused;
604#if EV_USE_EPOLL 1772#if EV_USE_EPOLL
605 unsigned int egen; /* generation counter to counter epoll bugs */ 1773 unsigned int egen; /* generation counter to counter epoll bugs */
606#endif 1774#endif
607#if EV_SELECT_IS_WINSOCKET 1775#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
608 SOCKET handle; 1776 SOCKET handle;
1777#endif
1778#if EV_USE_IOCP
1779 OVERLAPPED or, ow;
609#endif 1780#endif
610} ANFD; 1781} ANFD;
611 1782
612/* stores the pending event set for a given watcher */ 1783/* stores the pending event set for a given watcher */
613typedef struct 1784typedef struct
… …
655 #undef VAR 1826 #undef VAR
656 }; 1827 };
657 #include "ev_wrap.h" 1828 #include "ev_wrap.h"
658 1829
659 static struct ev_loop default_loop_struct; 1830 static struct ev_loop default_loop_struct;
660 struct ev_loop *ev_default_loop_ptr; 1831 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
661 1832
662#else 1833#else
663 1834
664 ev_tstamp ev_rt_now; 1835 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
665 #define VAR(name,decl) static decl; 1836 #define VAR(name,decl) static decl;
666 #include "ev_vars.h" 1837 #include "ev_vars.h"
667 #undef VAR 1838 #undef VAR
668 1839
669 static int ev_default_loop_ptr; 1840 static int ev_default_loop_ptr;
670 1841
671#endif 1842#endif
672 1843
673#if EV_MINIMAL < 2 1844#if EV_FEATURE_API
674# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1845# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
675# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1846# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
676# define EV_INVOKE_PENDING invoke_cb (EV_A) 1847# define EV_INVOKE_PENDING invoke_cb (EV_A)
677#else 1848#else
678# define EV_RELEASE_CB (void)0 1849# define EV_RELEASE_CB (void)0
679# define EV_ACQUIRE_CB (void)0 1850# define EV_ACQUIRE_CB (void)0
680# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1851# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
681#endif 1852#endif
682 1853
683#define EVUNLOOP_RECURSE 0x80 1854#define EVBREAK_RECURSE 0x80
684 1855
685/*****************************************************************************/ 1856/*****************************************************************************/
686 1857
687#ifndef EV_HAVE_EV_TIME 1858#ifndef EV_HAVE_EV_TIME
688ev_tstamp 1859ev_tstamp
689ev_time (void) 1860ev_time (void) EV_THROW
690{ 1861{
691#if EV_USE_REALTIME 1862#if EV_USE_REALTIME
692 if (expect_true (have_realtime)) 1863 if (expect_true (have_realtime))
693 { 1864 {
694 struct timespec ts; 1865 struct timespec ts;
… …
718 return ev_time (); 1889 return ev_time ();
719} 1890}
720 1891
721#if EV_MULTIPLICITY 1892#if EV_MULTIPLICITY
722ev_tstamp 1893ev_tstamp
723ev_now (EV_P) 1894ev_now (EV_P) EV_THROW
724{ 1895{
725 return ev_rt_now; 1896 return ev_rt_now;
726} 1897}
727#endif 1898#endif
728 1899
729void 1900void
730ev_sleep (ev_tstamp delay) 1901ev_sleep (ev_tstamp delay) EV_THROW
731{ 1902{
732 if (delay > 0.) 1903 if (delay > 0.)
733 { 1904 {
734#if EV_USE_NANOSLEEP 1905#if EV_USE_NANOSLEEP
735 struct timespec ts; 1906 struct timespec ts;
736 1907
737 ts.tv_sec = (time_t)delay; 1908 EV_TS_SET (ts, delay);
738 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
739
740 nanosleep (&ts, 0); 1909 nanosleep (&ts, 0);
741#elif defined(_WIN32) 1910#elif defined _WIN32
742 Sleep ((unsigned long)(delay * 1e3)); 1911 Sleep ((unsigned long)(delay * 1e3));
743#else 1912#else
744 struct timeval tv; 1913 struct timeval tv;
745
746 tv.tv_sec = (time_t)delay;
747 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
748 1914
749 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1915 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
750 /* something not guaranteed by newer posix versions, but guaranteed */ 1916 /* something not guaranteed by newer posix versions, but guaranteed */
751 /* by older ones */ 1917 /* by older ones */
1918 EV_TV_SET (tv, delay);
752 select (0, 0, 0, 0, &tv); 1919 select (0, 0, 0, 0, &tv);
753#endif 1920#endif
754 } 1921 }
755} 1922}
756 1923
757/*****************************************************************************/ 1924/*****************************************************************************/
758 1925
759#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1926#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
760 1927
761/* find a suitable new size for the given array, */ 1928/* find a suitable new size for the given array, */
762/* hopefully by rounding to a ncie-to-malloc size */ 1929/* hopefully by rounding to a nice-to-malloc size */
763inline_size int 1930inline_size int
764array_nextsize (int elem, int cur, int cnt) 1931array_nextsize (int elem, int cur, int cnt)
765{ 1932{
766 int ncur = cur + 1; 1933 int ncur = cur + 1;
767 1934
768 do 1935 do
769 ncur <<= 1; 1936 ncur <<= 1;
770 while (cnt > ncur); 1937 while (cnt > ncur);
771 1938
772 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1939 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
773 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1940 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
774 { 1941 {
775 ncur *= elem; 1942 ncur *= elem;
776 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1943 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
777 ncur = ncur - sizeof (void *) * 4; 1944 ncur = ncur - sizeof (void *) * 4;
… …
779 } 1946 }
780 1947
781 return ncur; 1948 return ncur;
782} 1949}
783 1950
784static noinline void * 1951noinline ecb_cold
1952static void *
785array_realloc (int elem, void *base, int *cur, int cnt) 1953array_realloc (int elem, void *base, int *cur, int cnt)
786{ 1954{
787 *cur = array_nextsize (elem, *cur, cnt); 1955 *cur = array_nextsize (elem, *cur, cnt);
788 return ev_realloc (base, elem * *cur); 1956 return ev_realloc (base, elem * *cur);
789} 1957}
… …
792 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1960 memset ((void *)(base), 0, sizeof (*(base)) * (count))
793 1961
794#define array_needsize(type,base,cur,cnt,init) \ 1962#define array_needsize(type,base,cur,cnt,init) \
795 if (expect_false ((cnt) > (cur))) \ 1963 if (expect_false ((cnt) > (cur))) \
796 { \ 1964 { \
797 int ocur_ = (cur); \ 1965 ecb_unused int ocur_ = (cur); \
798 (base) = (type *)array_realloc \ 1966 (base) = (type *)array_realloc \
799 (sizeof (type), (base), &(cur), (cnt)); \ 1967 (sizeof (type), (base), &(cur), (cnt)); \
800 init ((base) + (ocur_), (cur) - ocur_); \ 1968 init ((base) + (ocur_), (cur) - ocur_); \
801 } 1969 }
802 1970
… …
814 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1982 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
815 1983
816/*****************************************************************************/ 1984/*****************************************************************************/
817 1985
818/* dummy callback for pending events */ 1986/* dummy callback for pending events */
819static void noinline 1987noinline
1988static void
820pendingcb (EV_P_ ev_prepare *w, int revents) 1989pendingcb (EV_P_ ev_prepare *w, int revents)
821{ 1990{
822} 1991}
823 1992
824void noinline 1993noinline
1994void
825ev_feed_event (EV_P_ void *w, int revents) 1995ev_feed_event (EV_P_ void *w, int revents) EV_THROW
826{ 1996{
827 W w_ = (W)w; 1997 W w_ = (W)w;
828 int pri = ABSPRI (w_); 1998 int pri = ABSPRI (w_);
829 1999
830 if (expect_false (w_->pending)) 2000 if (expect_false (w_->pending))
… …
834 w_->pending = ++pendingcnt [pri]; 2004 w_->pending = ++pendingcnt [pri];
835 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2005 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
836 pendings [pri][w_->pending - 1].w = w_; 2006 pendings [pri][w_->pending - 1].w = w_;
837 pendings [pri][w_->pending - 1].events = revents; 2007 pendings [pri][w_->pending - 1].events = revents;
838 } 2008 }
2009
2010 pendingpri = NUMPRI - 1;
839} 2011}
840 2012
841inline_speed void 2013inline_speed void
842feed_reverse (EV_P_ W w) 2014feed_reverse (EV_P_ W w)
843{ 2015{
… …
863} 2035}
864 2036
865/*****************************************************************************/ 2037/*****************************************************************************/
866 2038
867inline_speed void 2039inline_speed void
868fd_event_nc (EV_P_ int fd, int revents) 2040fd_event_nocheck (EV_P_ int fd, int revents)
869{ 2041{
870 ANFD *anfd = anfds + fd; 2042 ANFD *anfd = anfds + fd;
871 ev_io *w; 2043 ev_io *w;
872 2044
873 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2045 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
885fd_event (EV_P_ int fd, int revents) 2057fd_event (EV_P_ int fd, int revents)
886{ 2058{
887 ANFD *anfd = anfds + fd; 2059 ANFD *anfd = anfds + fd;
888 2060
889 if (expect_true (!anfd->reify)) 2061 if (expect_true (!anfd->reify))
890 fd_event_nc (EV_A_ fd, revents); 2062 fd_event_nocheck (EV_A_ fd, revents);
891} 2063}
892 2064
893void 2065void
894ev_feed_fd_event (EV_P_ int fd, int revents) 2066ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
895{ 2067{
896 if (fd >= 0 && fd < anfdmax) 2068 if (fd >= 0 && fd < anfdmax)
897 fd_event_nc (EV_A_ fd, revents); 2069 fd_event_nocheck (EV_A_ fd, revents);
898} 2070}
899 2071
900/* make sure the external fd watch events are in-sync */ 2072/* make sure the external fd watch events are in-sync */
901/* with the kernel/libev internal state */ 2073/* with the kernel/libev internal state */
902inline_size void 2074inline_size void
903fd_reify (EV_P) 2075fd_reify (EV_P)
904{ 2076{
905 int i; 2077 int i;
906 2078
2079#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2080 for (i = 0; i < fdchangecnt; ++i)
2081 {
2082 int fd = fdchanges [i];
2083 ANFD *anfd = anfds + fd;
2084
2085 if (anfd->reify & EV__IOFDSET && anfd->head)
2086 {
2087 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2088
2089 if (handle != anfd->handle)
2090 {
2091 unsigned long arg;
2092
2093 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2094
2095 /* handle changed, but fd didn't - we need to do it in two steps */
2096 backend_modify (EV_A_ fd, anfd->events, 0);
2097 anfd->events = 0;
2098 anfd->handle = handle;
2099 }
2100 }
2101 }
2102#endif
2103
907 for (i = 0; i < fdchangecnt; ++i) 2104 for (i = 0; i < fdchangecnt; ++i)
908 { 2105 {
909 int fd = fdchanges [i]; 2106 int fd = fdchanges [i];
910 ANFD *anfd = anfds + fd; 2107 ANFD *anfd = anfds + fd;
911 ev_io *w; 2108 ev_io *w;
912 2109
913 unsigned char events = 0; 2110 unsigned char o_events = anfd->events;
2111 unsigned char o_reify = anfd->reify;
914 2112
915 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2113 anfd->reify = 0;
916 events |= (unsigned char)w->events;
917 2114
918#if EV_SELECT_IS_WINSOCKET 2115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
919 if (events)
920 { 2116 {
921 unsigned long arg; 2117 anfd->events = 0;
922 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2118
923 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2120 anfd->events |= (unsigned char)w->events;
2121
2122 if (o_events != anfd->events)
2123 o_reify = EV__IOFDSET; /* actually |= */
924 } 2124 }
925#endif
926 2125
927 { 2126 if (o_reify & EV__IOFDSET)
928 unsigned char o_events = anfd->events;
929 unsigned char o_reify = anfd->reify;
930
931 anfd->reify = 0;
932 anfd->events = events;
933
934 if (o_events != events || o_reify & EV__IOFDSET)
935 backend_modify (EV_A_ fd, o_events, events); 2127 backend_modify (EV_A_ fd, o_events, anfd->events);
936 }
937 } 2128 }
938 2129
939 fdchangecnt = 0; 2130 fdchangecnt = 0;
940} 2131}
941 2132
942/* something about the given fd changed */ 2133/* something about the given fd changed */
943inline_size void 2134inline_size
2135void
944fd_change (EV_P_ int fd, int flags) 2136fd_change (EV_P_ int fd, int flags)
945{ 2137{
946 unsigned char reify = anfds [fd].reify; 2138 unsigned char reify = anfds [fd].reify;
947 anfds [fd].reify |= flags; 2139 anfds [fd].reify |= flags;
948 2140
… …
953 fdchanges [fdchangecnt - 1] = fd; 2145 fdchanges [fdchangecnt - 1] = fd;
954 } 2146 }
955} 2147}
956 2148
957/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2149/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
958inline_speed void 2150inline_speed ecb_cold void
959fd_kill (EV_P_ int fd) 2151fd_kill (EV_P_ int fd)
960{ 2152{
961 ev_io *w; 2153 ev_io *w;
962 2154
963 while ((w = (ev_io *)anfds [fd].head)) 2155 while ((w = (ev_io *)anfds [fd].head))
… …
965 ev_io_stop (EV_A_ w); 2157 ev_io_stop (EV_A_ w);
966 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2158 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
967 } 2159 }
968} 2160}
969 2161
970/* check whether the given fd is atcually valid, for error recovery */ 2162/* check whether the given fd is actually valid, for error recovery */
971inline_size int 2163inline_size ecb_cold int
972fd_valid (int fd) 2164fd_valid (int fd)
973{ 2165{
974#ifdef _WIN32 2166#ifdef _WIN32
975 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2167 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
976#else 2168#else
977 return fcntl (fd, F_GETFD) != -1; 2169 return fcntl (fd, F_GETFD) != -1;
978#endif 2170#endif
979} 2171}
980 2172
981/* called on EBADF to verify fds */ 2173/* called on EBADF to verify fds */
982static void noinline 2174noinline ecb_cold
2175static void
983fd_ebadf (EV_P) 2176fd_ebadf (EV_P)
984{ 2177{
985 int fd; 2178 int fd;
986 2179
987 for (fd = 0; fd < anfdmax; ++fd) 2180 for (fd = 0; fd < anfdmax; ++fd)
… …
989 if (!fd_valid (fd) && errno == EBADF) 2182 if (!fd_valid (fd) && errno == EBADF)
990 fd_kill (EV_A_ fd); 2183 fd_kill (EV_A_ fd);
991} 2184}
992 2185
993/* called on ENOMEM in select/poll to kill some fds and retry */ 2186/* called on ENOMEM in select/poll to kill some fds and retry */
994static void noinline 2187noinline ecb_cold
2188static void
995fd_enomem (EV_P) 2189fd_enomem (EV_P)
996{ 2190{
997 int fd; 2191 int fd;
998 2192
999 for (fd = anfdmax; fd--; ) 2193 for (fd = anfdmax; fd--; )
… …
1003 break; 2197 break;
1004 } 2198 }
1005} 2199}
1006 2200
1007/* usually called after fork if backend needs to re-arm all fds from scratch */ 2201/* usually called after fork if backend needs to re-arm all fds from scratch */
1008static void noinline 2202noinline
2203static void
1009fd_rearm_all (EV_P) 2204fd_rearm_all (EV_P)
1010{ 2205{
1011 int fd; 2206 int fd;
1012 2207
1013 for (fd = 0; fd < anfdmax; ++fd) 2208 for (fd = 0; fd < anfdmax; ++fd)
… …
1017 anfds [fd].emask = 0; 2212 anfds [fd].emask = 0;
1018 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2213 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1019 } 2214 }
1020} 2215}
1021 2216
2217/* used to prepare libev internal fd's */
2218/* this is not fork-safe */
2219inline_speed void
2220fd_intern (int fd)
2221{
2222#ifdef _WIN32
2223 unsigned long arg = 1;
2224 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2225#else
2226 fcntl (fd, F_SETFD, FD_CLOEXEC);
2227 fcntl (fd, F_SETFL, O_NONBLOCK);
2228#endif
2229}
2230
1022/*****************************************************************************/ 2231/*****************************************************************************/
1023 2232
1024/* 2233/*
1025 * the heap functions want a real array index. array index 0 uis guaranteed to not 2234 * the heap functions want a real array index. array index 0 is guaranteed to not
1026 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2235 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1027 * the branching factor of the d-tree. 2236 * the branching factor of the d-tree.
1028 */ 2237 */
1029 2238
1030/* 2239/*
… …
1178 2387
1179static ANSIG signals [EV_NSIG - 1]; 2388static ANSIG signals [EV_NSIG - 1];
1180 2389
1181/*****************************************************************************/ 2390/*****************************************************************************/
1182 2391
1183/* used to prepare libev internal fd's */ 2392#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1184/* this is not fork-safe */ 2393
2394noinline ecb_cold
2395static void
2396evpipe_init (EV_P)
2397{
2398 if (!ev_is_active (&pipe_w))
2399 {
2400 int fds [2];
2401
2402# if EV_USE_EVENTFD
2403 fds [0] = -1;
2404 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2405 if (fds [1] < 0 && errno == EINVAL)
2406 fds [1] = eventfd (0, 0);
2407
2408 if (fds [1] < 0)
2409# endif
2410 {
2411 while (pipe (fds))
2412 ev_syserr ("(libev) error creating signal/async pipe");
2413
2414 fd_intern (fds [0]);
2415 }
2416
2417 evpipe [0] = fds [0];
2418
2419 if (evpipe [1] < 0)
2420 evpipe [1] = fds [1]; /* first call, set write fd */
2421 else
2422 {
2423 /* on subsequent calls, do not change evpipe [1] */
2424 /* so that evpipe_write can always rely on its value. */
2425 /* this branch does not do anything sensible on windows, */
2426 /* so must not be executed on windows */
2427
2428 dup2 (fds [1], evpipe [1]);
2429 close (fds [1]);
2430 }
2431
2432 fd_intern (evpipe [1]);
2433
2434 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2435 ev_io_start (EV_A_ &pipe_w);
2436 ev_unref (EV_A); /* watcher should not keep loop alive */
2437 }
2438}
2439
1185inline_speed void 2440inline_speed void
1186fd_intern (int fd) 2441evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1187{ 2442{
1188#ifdef _WIN32 2443 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1189 unsigned long arg = 1;
1190 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1191#else
1192 fcntl (fd, F_SETFD, FD_CLOEXEC);
1193 fcntl (fd, F_SETFL, O_NONBLOCK);
1194#endif
1195}
1196 2444
1197static void noinline 2445 if (expect_true (*flag))
1198evpipe_init (EV_P) 2446 return;
1199{ 2447
1200 if (!ev_is_active (&pipe_w)) 2448 *flag = 1;
2449 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2450
2451 pipe_write_skipped = 1;
2452
2453 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2454
2455 if (pipe_write_wanted)
1201 { 2456 {
2457 int old_errno;
2458
2459 pipe_write_skipped = 0;
2460 ECB_MEMORY_FENCE_RELEASE;
2461
2462 old_errno = errno; /* save errno because write will clobber it */
2463
1202#if EV_USE_EVENTFD 2464#if EV_USE_EVENTFD
1203 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2465 if (evpipe [0] < 0)
1204 if (evfd < 0 && errno == EINVAL)
1205 evfd = eventfd (0, 0);
1206
1207 if (evfd >= 0)
1208 { 2466 {
1209 evpipe [0] = -1; 2467 uint64_t counter = 1;
1210 fd_intern (evfd); /* doing it twice doesn't hurt */ 2468 write (evpipe [1], &counter, sizeof (uint64_t));
1211 ev_io_set (&pipe_w, evfd, EV_READ);
1212 } 2469 }
1213 else 2470 else
1214#endif 2471#endif
1215 { 2472 {
1216 while (pipe (evpipe)) 2473#ifdef _WIN32
1217 ev_syserr ("(libev) error creating signal/async pipe"); 2474 WSABUF buf;
1218 2475 DWORD sent;
1219 fd_intern (evpipe [0]); 2476 buf.buf = &buf;
1220 fd_intern (evpipe [1]); 2477 buf.len = 1;
1221 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2478 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2479#else
2480 write (evpipe [1], &(evpipe [1]), 1);
2481#endif
1222 } 2482 }
1223
1224 ev_io_start (EV_A_ &pipe_w);
1225 ev_unref (EV_A); /* watcher should not keep loop alive */
1226 }
1227}
1228
1229inline_size void
1230evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1231{
1232 if (!*flag)
1233 {
1234 int old_errno = errno; /* save errno because write might clobber it */
1235
1236 *flag = 1;
1237
1238#if EV_USE_EVENTFD
1239 if (evfd >= 0)
1240 {
1241 uint64_t counter = 1;
1242 write (evfd, &counter, sizeof (uint64_t));
1243 }
1244 else
1245#endif
1246 write (evpipe [1], &old_errno, 1);
1247 2483
1248 errno = old_errno; 2484 errno = old_errno;
1249 } 2485 }
1250} 2486}
1251 2487
… …
1254static void 2490static void
1255pipecb (EV_P_ ev_io *iow, int revents) 2491pipecb (EV_P_ ev_io *iow, int revents)
1256{ 2492{
1257 int i; 2493 int i;
1258 2494
2495 if (revents & EV_READ)
2496 {
1259#if EV_USE_EVENTFD 2497#if EV_USE_EVENTFD
1260 if (evfd >= 0) 2498 if (evpipe [0] < 0)
1261 { 2499 {
1262 uint64_t counter; 2500 uint64_t counter;
1263 read (evfd, &counter, sizeof (uint64_t)); 2501 read (evpipe [1], &counter, sizeof (uint64_t));
1264 } 2502 }
1265 else 2503 else
1266#endif 2504#endif
1267 { 2505 {
1268 char dummy; 2506 char dummy[4];
2507#ifdef _WIN32
2508 WSABUF buf;
2509 DWORD recvd;
2510 DWORD flags = 0;
2511 buf.buf = dummy;
2512 buf.len = sizeof (dummy);
2513 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2514#else
1269 read (evpipe [0], &dummy, 1); 2515 read (evpipe [0], &dummy, sizeof (dummy));
2516#endif
2517 }
1270 } 2518 }
1271 2519
2520 pipe_write_skipped = 0;
2521
2522 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2523
2524#if EV_SIGNAL_ENABLE
1272 if (sig_pending) 2525 if (sig_pending)
1273 { 2526 {
1274 sig_pending = 0; 2527 sig_pending = 0;
2528
2529 ECB_MEMORY_FENCE;
1275 2530
1276 for (i = EV_NSIG - 1; i--; ) 2531 for (i = EV_NSIG - 1; i--; )
1277 if (expect_false (signals [i].pending)) 2532 if (expect_false (signals [i].pending))
1278 ev_feed_signal_event (EV_A_ i + 1); 2533 ev_feed_signal_event (EV_A_ i + 1);
1279 } 2534 }
2535#endif
1280 2536
1281#if EV_ASYNC_ENABLE 2537#if EV_ASYNC_ENABLE
1282 if (async_pending) 2538 if (async_pending)
1283 { 2539 {
1284 async_pending = 0; 2540 async_pending = 0;
2541
2542 ECB_MEMORY_FENCE;
1285 2543
1286 for (i = asynccnt; i--; ) 2544 for (i = asynccnt; i--; )
1287 if (asyncs [i]->sent) 2545 if (asyncs [i]->sent)
1288 { 2546 {
1289 asyncs [i]->sent = 0; 2547 asyncs [i]->sent = 0;
2548 ECB_MEMORY_FENCE_RELEASE;
1290 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2549 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1291 } 2550 }
1292 } 2551 }
1293#endif 2552#endif
1294} 2553}
1295 2554
1296/*****************************************************************************/ 2555/*****************************************************************************/
1297 2556
2557void
2558ev_feed_signal (int signum) EV_THROW
2559{
2560#if EV_MULTIPLICITY
2561 EV_P;
2562 ECB_MEMORY_FENCE_ACQUIRE;
2563 EV_A = signals [signum - 1].loop;
2564
2565 if (!EV_A)
2566 return;
2567#endif
2568
2569 signals [signum - 1].pending = 1;
2570 evpipe_write (EV_A_ &sig_pending);
2571}
2572
1298static void 2573static void
1299ev_sighandler (int signum) 2574ev_sighandler (int signum)
1300{ 2575{
1301#if EV_MULTIPLICITY
1302 EV_P = signals [signum - 1].loop;
1303#endif
1304
1305#ifdef _WIN32 2576#ifdef _WIN32
1306 signal (signum, ev_sighandler); 2577 signal (signum, ev_sighandler);
1307#endif 2578#endif
1308 2579
1309 signals [signum - 1].pending = 1; 2580 ev_feed_signal (signum);
1310 evpipe_write (EV_A_ &sig_pending);
1311} 2581}
1312 2582
1313void noinline 2583noinline
2584void
1314ev_feed_signal_event (EV_P_ int signum) 2585ev_feed_signal_event (EV_P_ int signum) EV_THROW
1315{ 2586{
1316 WL w; 2587 WL w;
1317 2588
1318 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2589 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1319 return; 2590 return;
1320 2591
1321 --signum; 2592 --signum;
1322 2593
1323#if EV_MULTIPLICITY 2594#if EV_MULTIPLICITY
… …
1327 if (expect_false (signals [signum].loop != EV_A)) 2598 if (expect_false (signals [signum].loop != EV_A))
1328 return; 2599 return;
1329#endif 2600#endif
1330 2601
1331 signals [signum].pending = 0; 2602 signals [signum].pending = 0;
2603 ECB_MEMORY_FENCE_RELEASE;
1332 2604
1333 for (w = signals [signum].head; w; w = w->next) 2605 for (w = signals [signum].head; w; w = w->next)
1334 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1335} 2607}
1336 2608
… …
1352 break; 2624 break;
1353 } 2625 }
1354} 2626}
1355#endif 2627#endif
1356 2628
2629#endif
2630
1357/*****************************************************************************/ 2631/*****************************************************************************/
1358 2632
2633#if EV_CHILD_ENABLE
1359static WL childs [EV_PID_HASHSIZE]; 2634static WL childs [EV_PID_HASHSIZE];
1360
1361#ifndef _WIN32
1362 2635
1363static ev_signal childev; 2636static ev_signal childev;
1364 2637
1365#ifndef WIFCONTINUED 2638#ifndef WIFCONTINUED
1366# define WIFCONTINUED(status) 0 2639# define WIFCONTINUED(status) 0
… …
1371child_reap (EV_P_ int chain, int pid, int status) 2644child_reap (EV_P_ int chain, int pid, int status)
1372{ 2645{
1373 ev_child *w; 2646 ev_child *w;
1374 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2647 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1375 2648
1376 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2649 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1377 { 2650 {
1378 if ((w->pid == pid || !w->pid) 2651 if ((w->pid == pid || !w->pid)
1379 && (!traced || (w->flags & 1))) 2652 && (!traced || (w->flags & 1)))
1380 { 2653 {
1381 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2654 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1406 /* make sure we are called again until all children have been reaped */ 2679 /* make sure we are called again until all children have been reaped */
1407 /* we need to do it this way so that the callback gets called before we continue */ 2680 /* we need to do it this way so that the callback gets called before we continue */
1408 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2681 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1409 2682
1410 child_reap (EV_A_ pid, pid, status); 2683 child_reap (EV_A_ pid, pid, status);
1411 if (EV_PID_HASHSIZE > 1) 2684 if ((EV_PID_HASHSIZE) > 1)
1412 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2685 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1413} 2686}
1414 2687
1415#endif 2688#endif
1416 2689
1417/*****************************************************************************/ 2690/*****************************************************************************/
1418 2691
2692#if EV_USE_IOCP
2693# include "ev_iocp.c"
2694#endif
1419#if EV_USE_PORT 2695#if EV_USE_PORT
1420# include "ev_port.c" 2696# include "ev_port.c"
1421#endif 2697#endif
1422#if EV_USE_KQUEUE 2698#if EV_USE_KQUEUE
1423# include "ev_kqueue.c" 2699# include "ev_kqueue.c"
… …
1430#endif 2706#endif
1431#if EV_USE_SELECT 2707#if EV_USE_SELECT
1432# include "ev_select.c" 2708# include "ev_select.c"
1433#endif 2709#endif
1434 2710
1435int 2711ecb_cold int
1436ev_version_major (void) 2712ev_version_major (void) EV_THROW
1437{ 2713{
1438 return EV_VERSION_MAJOR; 2714 return EV_VERSION_MAJOR;
1439} 2715}
1440 2716
1441int 2717ecb_cold int
1442ev_version_minor (void) 2718ev_version_minor (void) EV_THROW
1443{ 2719{
1444 return EV_VERSION_MINOR; 2720 return EV_VERSION_MINOR;
1445} 2721}
1446 2722
1447/* return true if we are running with elevated privileges and should ignore env variables */ 2723/* return true if we are running with elevated privileges and should ignore env variables */
1448int inline_size 2724inline_size ecb_cold int
1449enable_secure (void) 2725enable_secure (void)
1450{ 2726{
1451#ifdef _WIN32 2727#ifdef _WIN32
1452 return 0; 2728 return 0;
1453#else 2729#else
1454 return getuid () != geteuid () 2730 return getuid () != geteuid ()
1455 || getgid () != getegid (); 2731 || getgid () != getegid ();
1456#endif 2732#endif
1457} 2733}
1458 2734
2735ecb_cold
1459unsigned int 2736unsigned int
1460ev_supported_backends (void) 2737ev_supported_backends (void) EV_THROW
1461{ 2738{
1462 unsigned int flags = 0; 2739 unsigned int flags = 0;
1463 2740
1464 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1465 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2742 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1468 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1469 2746
1470 return flags; 2747 return flags;
1471} 2748}
1472 2749
2750ecb_cold
1473unsigned int 2751unsigned int
1474ev_recommended_backends (void) 2752ev_recommended_backends (void) EV_THROW
1475{ 2753{
1476 unsigned int flags = ev_supported_backends (); 2754 unsigned int flags = ev_supported_backends ();
1477 2755
1478#ifndef __NetBSD__ 2756#ifndef __NetBSD__
1479 /* kqueue is borked on everything but netbsd apparently */ 2757 /* kqueue is borked on everything but netbsd apparently */
… …
1483#ifdef __APPLE__ 2761#ifdef __APPLE__
1484 /* only select works correctly on that "unix-certified" platform */ 2762 /* only select works correctly on that "unix-certified" platform */
1485 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2763 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1486 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2764 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1487#endif 2765#endif
2766#ifdef __FreeBSD__
2767 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2768#endif
1488 2769
1489 return flags; 2770 return flags;
1490} 2771}
1491 2772
2773ecb_cold
1492unsigned int 2774unsigned int
1493ev_embeddable_backends (void) 2775ev_embeddable_backends (void) EV_THROW
1494{ 2776{
1495 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2777 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1496 2778
1497 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2779 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1498 /* please fix it and tell me how to detect the fix */ 2780 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1499 flags &= ~EVBACKEND_EPOLL; 2781 flags &= ~EVBACKEND_EPOLL;
1500 2782
1501 return flags; 2783 return flags;
1502} 2784}
1503 2785
1504unsigned int 2786unsigned int
1505ev_backend (EV_P) 2787ev_backend (EV_P) EV_THROW
1506{ 2788{
1507 return backend; 2789 return backend;
1508} 2790}
1509 2791
1510#if EV_MINIMAL < 2 2792#if EV_FEATURE_API
1511unsigned int 2793unsigned int
1512ev_loop_count (EV_P) 2794ev_iteration (EV_P) EV_THROW
1513{ 2795{
1514 return loop_count; 2796 return loop_count;
1515} 2797}
1516 2798
1517unsigned int 2799unsigned int
1518ev_loop_depth (EV_P) 2800ev_depth (EV_P) EV_THROW
1519{ 2801{
1520 return loop_depth; 2802 return loop_depth;
1521} 2803}
1522 2804
1523void 2805void
1524ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2806ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1525{ 2807{
1526 io_blocktime = interval; 2808 io_blocktime = interval;
1527} 2809}
1528 2810
1529void 2811void
1530ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2812ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1531{ 2813{
1532 timeout_blocktime = interval; 2814 timeout_blocktime = interval;
1533} 2815}
1534 2816
1535void 2817void
1536ev_set_userdata (EV_P_ void *data) 2818ev_set_userdata (EV_P_ void *data) EV_THROW
1537{ 2819{
1538 userdata = data; 2820 userdata = data;
1539} 2821}
1540 2822
1541void * 2823void *
1542ev_userdata (EV_P) 2824ev_userdata (EV_P) EV_THROW
1543{ 2825{
1544 return userdata; 2826 return userdata;
1545} 2827}
1546 2828
2829void
1547void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2830ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1548{ 2831{
1549 invoke_cb = invoke_pending_cb; 2832 invoke_cb = invoke_pending_cb;
1550} 2833}
1551 2834
2835void
1552void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2836ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1553{ 2837{
1554 release_cb = release; 2838 release_cb = release;
1555 acquire_cb = acquire; 2839 acquire_cb = acquire;
1556} 2840}
1557#endif 2841#endif
1558 2842
1559/* initialise a loop structure, must be zero-initialised */ 2843/* initialise a loop structure, must be zero-initialised */
1560static void noinline 2844noinline ecb_cold
2845static void
1561loop_init (EV_P_ unsigned int flags) 2846loop_init (EV_P_ unsigned int flags) EV_THROW
1562{ 2847{
1563 if (!backend) 2848 if (!backend)
1564 { 2849 {
2850 origflags = flags;
2851
1565#if EV_USE_REALTIME 2852#if EV_USE_REALTIME
1566 if (!have_realtime) 2853 if (!have_realtime)
1567 { 2854 {
1568 struct timespec ts; 2855 struct timespec ts;
1569 2856
… …
1591 if (!(flags & EVFLAG_NOENV) 2878 if (!(flags & EVFLAG_NOENV)
1592 && !enable_secure () 2879 && !enable_secure ()
1593 && getenv ("LIBEV_FLAGS")) 2880 && getenv ("LIBEV_FLAGS"))
1594 flags = atoi (getenv ("LIBEV_FLAGS")); 2881 flags = atoi (getenv ("LIBEV_FLAGS"));
1595 2882
1596 ev_rt_now = ev_time (); 2883 ev_rt_now = ev_time ();
1597 mn_now = get_clock (); 2884 mn_now = get_clock ();
1598 now_floor = mn_now; 2885 now_floor = mn_now;
1599 rtmn_diff = ev_rt_now - mn_now; 2886 rtmn_diff = ev_rt_now - mn_now;
1600#if EV_MINIMAL < 2 2887#if EV_FEATURE_API
1601 invoke_cb = ev_invoke_pending; 2888 invoke_cb = ev_invoke_pending;
1602#endif 2889#endif
1603 2890
1604 io_blocktime = 0.; 2891 io_blocktime = 0.;
1605 timeout_blocktime = 0.; 2892 timeout_blocktime = 0.;
1606 backend = 0; 2893 backend = 0;
1607 backend_fd = -1; 2894 backend_fd = -1;
1608 sig_pending = 0; 2895 sig_pending = 0;
1609#if EV_ASYNC_ENABLE 2896#if EV_ASYNC_ENABLE
1610 async_pending = 0; 2897 async_pending = 0;
1611#endif 2898#endif
2899 pipe_write_skipped = 0;
2900 pipe_write_wanted = 0;
2901 evpipe [0] = -1;
2902 evpipe [1] = -1;
1612#if EV_USE_INOTIFY 2903#if EV_USE_INOTIFY
1613 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2904 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1614#endif 2905#endif
1615#if EV_USE_SIGNALFD 2906#if EV_USE_SIGNALFD
1616 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2907 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1617#endif 2908#endif
1618 2909
1619 if (!(flags & 0x0000ffffU)) 2910 if (!(flags & EVBACKEND_MASK))
1620 flags |= ev_recommended_backends (); 2911 flags |= ev_recommended_backends ();
1621 2912
2913#if EV_USE_IOCP
2914 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2915#endif
1622#if EV_USE_PORT 2916#if EV_USE_PORT
1623 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2917 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1624#endif 2918#endif
1625#if EV_USE_KQUEUE 2919#if EV_USE_KQUEUE
1626 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2920 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1635 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2929 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1636#endif 2930#endif
1637 2931
1638 ev_prepare_init (&pending_w, pendingcb); 2932 ev_prepare_init (&pending_w, pendingcb);
1639 2933
2934#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1640 ev_init (&pipe_w, pipecb); 2935 ev_init (&pipe_w, pipecb);
1641 ev_set_priority (&pipe_w, EV_MAXPRI); 2936 ev_set_priority (&pipe_w, EV_MAXPRI);
2937#endif
1642 } 2938 }
1643} 2939}
1644 2940
1645/* free up a loop structure */ 2941/* free up a loop structure */
1646static void noinline 2942ecb_cold
2943void
1647loop_destroy (EV_P) 2944ev_loop_destroy (EV_P)
1648{ 2945{
1649 int i; 2946 int i;
2947
2948#if EV_MULTIPLICITY
2949 /* mimic free (0) */
2950 if (!EV_A)
2951 return;
2952#endif
2953
2954#if EV_CLEANUP_ENABLE
2955 /* queue cleanup watchers (and execute them) */
2956 if (expect_false (cleanupcnt))
2957 {
2958 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2959 EV_INVOKE_PENDING;
2960 }
2961#endif
2962
2963#if EV_CHILD_ENABLE
2964 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2965 {
2966 ev_ref (EV_A); /* child watcher */
2967 ev_signal_stop (EV_A_ &childev);
2968 }
2969#endif
1650 2970
1651 if (ev_is_active (&pipe_w)) 2971 if (ev_is_active (&pipe_w))
1652 { 2972 {
1653 /*ev_ref (EV_A);*/ 2973 /*ev_ref (EV_A);*/
1654 /*ev_io_stop (EV_A_ &pipe_w);*/ 2974 /*ev_io_stop (EV_A_ &pipe_w);*/
1655 2975
1656#if EV_USE_EVENTFD
1657 if (evfd >= 0)
1658 close (evfd);
1659#endif
1660
1661 if (evpipe [0] >= 0)
1662 {
1663 EV_WIN32_CLOSE_FD (evpipe [0]); 2976 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1664 EV_WIN32_CLOSE_FD (evpipe [1]); 2977 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1665 }
1666 } 2978 }
1667 2979
1668#if EV_USE_SIGNALFD 2980#if EV_USE_SIGNALFD
1669 if (ev_is_active (&sigfd_w)) 2981 if (ev_is_active (&sigfd_w))
1670 close (sigfd); 2982 close (sigfd);
… …
1676#endif 2988#endif
1677 2989
1678 if (backend_fd >= 0) 2990 if (backend_fd >= 0)
1679 close (backend_fd); 2991 close (backend_fd);
1680 2992
2993#if EV_USE_IOCP
2994 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2995#endif
1681#if EV_USE_PORT 2996#if EV_USE_PORT
1682 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2997 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1683#endif 2998#endif
1684#if EV_USE_KQUEUE 2999#if EV_USE_KQUEUE
1685 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3000 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1712 array_free (periodic, EMPTY); 3027 array_free (periodic, EMPTY);
1713#endif 3028#endif
1714#if EV_FORK_ENABLE 3029#if EV_FORK_ENABLE
1715 array_free (fork, EMPTY); 3030 array_free (fork, EMPTY);
1716#endif 3031#endif
3032#if EV_CLEANUP_ENABLE
3033 array_free (cleanup, EMPTY);
3034#endif
1717 array_free (prepare, EMPTY); 3035 array_free (prepare, EMPTY);
1718 array_free (check, EMPTY); 3036 array_free (check, EMPTY);
1719#if EV_ASYNC_ENABLE 3037#if EV_ASYNC_ENABLE
1720 array_free (async, EMPTY); 3038 array_free (async, EMPTY);
1721#endif 3039#endif
1722 3040
1723 backend = 0; 3041 backend = 0;
3042
3043#if EV_MULTIPLICITY
3044 if (ev_is_default_loop (EV_A))
3045#endif
3046 ev_default_loop_ptr = 0;
3047#if EV_MULTIPLICITY
3048 else
3049 ev_free (EV_A);
3050#endif
1724} 3051}
1725 3052
1726#if EV_USE_INOTIFY 3053#if EV_USE_INOTIFY
1727inline_size void infy_fork (EV_P); 3054inline_size void infy_fork (EV_P);
1728#endif 3055#endif
… …
1741#endif 3068#endif
1742#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
1743 infy_fork (EV_A); 3070 infy_fork (EV_A);
1744#endif 3071#endif
1745 3072
3073#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1746 if (ev_is_active (&pipe_w)) 3074 if (ev_is_active (&pipe_w) && postfork != 2)
1747 { 3075 {
1748 /* this "locks" the handlers against writing to the pipe */ 3076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1749 /* while we modify the fd vars */
1750 sig_pending = 1;
1751#if EV_ASYNC_ENABLE
1752 async_pending = 1;
1753#endif
1754 3077
1755 ev_ref (EV_A); 3078 ev_ref (EV_A);
1756 ev_io_stop (EV_A_ &pipe_w); 3079 ev_io_stop (EV_A_ &pipe_w);
1757 3080
1758#if EV_USE_EVENTFD
1759 if (evfd >= 0)
1760 close (evfd);
1761#endif
1762
1763 if (evpipe [0] >= 0) 3081 if (evpipe [0] >= 0)
1764 {
1765 EV_WIN32_CLOSE_FD (evpipe [0]); 3082 EV_WIN32_CLOSE_FD (evpipe [0]);
1766 EV_WIN32_CLOSE_FD (evpipe [1]);
1767 }
1768 3083
1769 evpipe_init (EV_A); 3084 evpipe_init (EV_A);
1770 /* now iterate over everything, in case we missed something */ 3085 /* iterate over everything, in case we missed something before */
1771 pipecb (EV_A_ &pipe_w, EV_READ); 3086 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1772 } 3087 }
3088#endif
1773 3089
1774 postfork = 0; 3090 postfork = 0;
1775} 3091}
1776 3092
1777#if EV_MULTIPLICITY 3093#if EV_MULTIPLICITY
1778 3094
3095ecb_cold
1779struct ev_loop * 3096struct ev_loop *
1780ev_loop_new (unsigned int flags) 3097ev_loop_new (unsigned int flags) EV_THROW
1781{ 3098{
1782 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3099 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1783 3100
1784 memset (EV_A, 0, sizeof (struct ev_loop)); 3101 memset (EV_A, 0, sizeof (struct ev_loop));
1785 loop_init (EV_A_ flags); 3102 loop_init (EV_A_ flags);
1786 3103
1787 if (ev_backend (EV_A)) 3104 if (ev_backend (EV_A))
1788 return EV_A; 3105 return EV_A;
1789 3106
3107 ev_free (EV_A);
1790 return 0; 3108 return 0;
1791} 3109}
1792 3110
1793void
1794ev_loop_destroy (EV_P)
1795{
1796 loop_destroy (EV_A);
1797 ev_free (loop);
1798}
1799
1800void
1801ev_loop_fork (EV_P)
1802{
1803 postfork = 1; /* must be in line with ev_default_fork */
1804}
1805#endif /* multiplicity */ 3111#endif /* multiplicity */
1806 3112
1807#if EV_VERIFY 3113#if EV_VERIFY
1808static void noinline 3114noinline ecb_cold
3115static void
1809verify_watcher (EV_P_ W w) 3116verify_watcher (EV_P_ W w)
1810{ 3117{
1811 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3118 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1812 3119
1813 if (w->pending) 3120 if (w->pending)
1814 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3121 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1815} 3122}
1816 3123
1817static void noinline 3124noinline ecb_cold
3125static void
1818verify_heap (EV_P_ ANHE *heap, int N) 3126verify_heap (EV_P_ ANHE *heap, int N)
1819{ 3127{
1820 int i; 3128 int i;
1821 3129
1822 for (i = HEAP0; i < N + HEAP0; ++i) 3130 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1827 3135
1828 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3136 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1829 } 3137 }
1830} 3138}
1831 3139
1832static void noinline 3140noinline ecb_cold
3141static void
1833array_verify (EV_P_ W *ws, int cnt) 3142array_verify (EV_P_ W *ws, int cnt)
1834{ 3143{
1835 while (cnt--) 3144 while (cnt--)
1836 { 3145 {
1837 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3146 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1838 verify_watcher (EV_A_ ws [cnt]); 3147 verify_watcher (EV_A_ ws [cnt]);
1839 } 3148 }
1840} 3149}
1841#endif 3150#endif
1842 3151
1843#if EV_MINIMAL < 2 3152#if EV_FEATURE_API
1844void 3153void ecb_cold
1845ev_loop_verify (EV_P) 3154ev_verify (EV_P) EV_THROW
1846{ 3155{
1847#if EV_VERIFY 3156#if EV_VERIFY
1848 int i; 3157 int i;
1849 WL w; 3158 WL w, w2;
1850 3159
1851 assert (activecnt >= -1); 3160 assert (activecnt >= -1);
1852 3161
1853 assert (fdchangemax >= fdchangecnt); 3162 assert (fdchangemax >= fdchangecnt);
1854 for (i = 0; i < fdchangecnt; ++i) 3163 for (i = 0; i < fdchangecnt; ++i)
1855 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3164 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1856 3165
1857 assert (anfdmax >= 0); 3166 assert (anfdmax >= 0);
1858 for (i = 0; i < anfdmax; ++i) 3167 for (i = 0; i < anfdmax; ++i)
3168 {
3169 int j = 0;
3170
1859 for (w = anfds [i].head; w; w = w->next) 3171 for (w = w2 = anfds [i].head; w; w = w->next)
1860 { 3172 {
1861 verify_watcher (EV_A_ (W)w); 3173 verify_watcher (EV_A_ (W)w);
3174
3175 if (j++ & 1)
3176 {
3177 assert (("libev: io watcher list contains a loop", w != w2));
3178 w2 = w2->next;
3179 }
3180
1862 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3181 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1863 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3182 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1864 } 3183 }
3184 }
1865 3185
1866 assert (timermax >= timercnt); 3186 assert (timermax >= timercnt);
1867 verify_heap (EV_A_ timers, timercnt); 3187 verify_heap (EV_A_ timers, timercnt);
1868 3188
1869#if EV_PERIODIC_ENABLE 3189#if EV_PERIODIC_ENABLE
… …
1884#if EV_FORK_ENABLE 3204#if EV_FORK_ENABLE
1885 assert (forkmax >= forkcnt); 3205 assert (forkmax >= forkcnt);
1886 array_verify (EV_A_ (W *)forks, forkcnt); 3206 array_verify (EV_A_ (W *)forks, forkcnt);
1887#endif 3207#endif
1888 3208
3209#if EV_CLEANUP_ENABLE
3210 assert (cleanupmax >= cleanupcnt);
3211 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3212#endif
3213
1889#if EV_ASYNC_ENABLE 3214#if EV_ASYNC_ENABLE
1890 assert (asyncmax >= asynccnt); 3215 assert (asyncmax >= asynccnt);
1891 array_verify (EV_A_ (W *)asyncs, asynccnt); 3216 array_verify (EV_A_ (W *)asyncs, asynccnt);
1892#endif 3217#endif
1893 3218
3219#if EV_PREPARE_ENABLE
1894 assert (preparemax >= preparecnt); 3220 assert (preparemax >= preparecnt);
1895 array_verify (EV_A_ (W *)prepares, preparecnt); 3221 array_verify (EV_A_ (W *)prepares, preparecnt);
3222#endif
1896 3223
3224#if EV_CHECK_ENABLE
1897 assert (checkmax >= checkcnt); 3225 assert (checkmax >= checkcnt);
1898 array_verify (EV_A_ (W *)checks, checkcnt); 3226 array_verify (EV_A_ (W *)checks, checkcnt);
3227#endif
1899 3228
1900# if 0 3229# if 0
3230#if EV_CHILD_ENABLE
1901 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3231 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1902 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3232 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3233#endif
1903# endif 3234# endif
1904#endif 3235#endif
1905} 3236}
1906#endif 3237#endif
1907 3238
1908#if EV_MULTIPLICITY 3239#if EV_MULTIPLICITY
3240ecb_cold
1909struct ev_loop * 3241struct ev_loop *
1910ev_default_loop_init (unsigned int flags)
1911#else 3242#else
1912int 3243int
3244#endif
1913ev_default_loop (unsigned int flags) 3245ev_default_loop (unsigned int flags) EV_THROW
1914#endif
1915{ 3246{
1916 if (!ev_default_loop_ptr) 3247 if (!ev_default_loop_ptr)
1917 { 3248 {
1918#if EV_MULTIPLICITY 3249#if EV_MULTIPLICITY
1919 EV_P = ev_default_loop_ptr = &default_loop_struct; 3250 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1923 3254
1924 loop_init (EV_A_ flags); 3255 loop_init (EV_A_ flags);
1925 3256
1926 if (ev_backend (EV_A)) 3257 if (ev_backend (EV_A))
1927 { 3258 {
1928#ifndef _WIN32 3259#if EV_CHILD_ENABLE
1929 ev_signal_init (&childev, childcb, SIGCHLD); 3260 ev_signal_init (&childev, childcb, SIGCHLD);
1930 ev_set_priority (&childev, EV_MAXPRI); 3261 ev_set_priority (&childev, EV_MAXPRI);
1931 ev_signal_start (EV_A_ &childev); 3262 ev_signal_start (EV_A_ &childev);
1932 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3263 ev_unref (EV_A); /* child watcher should not keep loop alive */
1933#endif 3264#endif
… …
1938 3269
1939 return ev_default_loop_ptr; 3270 return ev_default_loop_ptr;
1940} 3271}
1941 3272
1942void 3273void
1943ev_default_destroy (void) 3274ev_loop_fork (EV_P) EV_THROW
1944{ 3275{
1945#if EV_MULTIPLICITY 3276 postfork = 1;
1946 EV_P = ev_default_loop_ptr;
1947#endif
1948
1949 ev_default_loop_ptr = 0;
1950
1951#ifndef _WIN32
1952 ev_ref (EV_A); /* child watcher */
1953 ev_signal_stop (EV_A_ &childev);
1954#endif
1955
1956 loop_destroy (EV_A);
1957}
1958
1959void
1960ev_default_fork (void)
1961{
1962#if EV_MULTIPLICITY
1963 EV_P = ev_default_loop_ptr;
1964#endif
1965
1966 postfork = 1; /* must be in line with ev_loop_fork */
1967} 3277}
1968 3278
1969/*****************************************************************************/ 3279/*****************************************************************************/
1970 3280
1971void 3281void
… …
1973{ 3283{
1974 EV_CB_INVOKE ((W)w, revents); 3284 EV_CB_INVOKE ((W)w, revents);
1975} 3285}
1976 3286
1977unsigned int 3287unsigned int
1978ev_pending_count (EV_P) 3288ev_pending_count (EV_P) EV_THROW
1979{ 3289{
1980 int pri; 3290 int pri;
1981 unsigned int count = 0; 3291 unsigned int count = 0;
1982 3292
1983 for (pri = NUMPRI; pri--; ) 3293 for (pri = NUMPRI; pri--; )
1984 count += pendingcnt [pri]; 3294 count += pendingcnt [pri];
1985 3295
1986 return count; 3296 return count;
1987} 3297}
1988 3298
1989void noinline 3299noinline
3300void
1990ev_invoke_pending (EV_P) 3301ev_invoke_pending (EV_P)
1991{ 3302{
1992 int pri; 3303 pendingpri = NUMPRI;
1993 3304
1994 for (pri = NUMPRI; pri--; ) 3305 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3306 {
3307 --pendingpri;
3308
1995 while (pendingcnt [pri]) 3309 while (pendingcnt [pendingpri])
1996 { 3310 {
1997 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3311 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1998 3312
1999 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2000 /* ^ this is no longer true, as pending_w could be here */
2001
2002 p->w->pending = 0; 3313 p->w->pending = 0;
2003 EV_CB_INVOKE (p->w, p->events); 3314 EV_CB_INVOKE (p->w, p->events);
2004 EV_FREQUENT_CHECK; 3315 EV_FREQUENT_CHECK;
2005 } 3316 }
3317 }
2006} 3318}
2007 3319
2008#if EV_IDLE_ENABLE 3320#if EV_IDLE_ENABLE
2009/* make idle watchers pending. this handles the "call-idle */ 3321/* make idle watchers pending. this handles the "call-idle */
2010/* only when higher priorities are idle" logic */ 3322/* only when higher priorities are idle" logic */
… …
2062 EV_FREQUENT_CHECK; 3374 EV_FREQUENT_CHECK;
2063 feed_reverse (EV_A_ (W)w); 3375 feed_reverse (EV_A_ (W)w);
2064 } 3376 }
2065 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3377 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2066 3378
2067 feed_reverse_done (EV_A_ EV_TIMEOUT); 3379 feed_reverse_done (EV_A_ EV_TIMER);
2068 } 3380 }
2069} 3381}
2070 3382
2071#if EV_PERIODIC_ENABLE 3383#if EV_PERIODIC_ENABLE
3384
3385noinline
3386static void
3387periodic_recalc (EV_P_ ev_periodic *w)
3388{
3389 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3390 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3391
3392 /* the above almost always errs on the low side */
3393 while (at <= ev_rt_now)
3394 {
3395 ev_tstamp nat = at + w->interval;
3396
3397 /* when resolution fails us, we use ev_rt_now */
3398 if (expect_false (nat == at))
3399 {
3400 at = ev_rt_now;
3401 break;
3402 }
3403
3404 at = nat;
3405 }
3406
3407 ev_at (w) = at;
3408}
3409
2072/* make periodics pending */ 3410/* make periodics pending */
2073inline_size void 3411inline_size void
2074periodics_reify (EV_P) 3412periodics_reify (EV_P)
2075{ 3413{
2076 EV_FREQUENT_CHECK; 3414 EV_FREQUENT_CHECK;
2077 3415
2078 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3416 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2079 { 3417 {
2080 int feed_count = 0;
2081
2082 do 3418 do
2083 { 3419 {
2084 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3420 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2085 3421
2086 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3422 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2095 ANHE_at_cache (periodics [HEAP0]); 3431 ANHE_at_cache (periodics [HEAP0]);
2096 downheap (periodics, periodiccnt, HEAP0); 3432 downheap (periodics, periodiccnt, HEAP0);
2097 } 3433 }
2098 else if (w->interval) 3434 else if (w->interval)
2099 { 3435 {
2100 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3436 periodic_recalc (EV_A_ w);
2101 /* if next trigger time is not sufficiently in the future, put it there */
2102 /* this might happen because of floating point inexactness */
2103 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2104 {
2105 ev_at (w) += w->interval;
2106
2107 /* if interval is unreasonably low we might still have a time in the past */
2108 /* so correct this. this will make the periodic very inexact, but the user */
2109 /* has effectively asked to get triggered more often than possible */
2110 if (ev_at (w) < ev_rt_now)
2111 ev_at (w) = ev_rt_now;
2112 }
2113
2114 ANHE_at_cache (periodics [HEAP0]); 3437 ANHE_at_cache (periodics [HEAP0]);
2115 downheap (periodics, periodiccnt, HEAP0); 3438 downheap (periodics, periodiccnt, HEAP0);
2116 } 3439 }
2117 else 3440 else
2118 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3441 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2125 feed_reverse_done (EV_A_ EV_PERIODIC); 3448 feed_reverse_done (EV_A_ EV_PERIODIC);
2126 } 3449 }
2127} 3450}
2128 3451
2129/* simply recalculate all periodics */ 3452/* simply recalculate all periodics */
2130/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3453/* TODO: maybe ensure that at least one event happens when jumping forward? */
2131static void noinline 3454noinline ecb_cold
3455static void
2132periodics_reschedule (EV_P) 3456periodics_reschedule (EV_P)
2133{ 3457{
2134 int i; 3458 int i;
2135 3459
2136 /* adjust periodics after time jump */ 3460 /* adjust periodics after time jump */
… …
2139 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3463 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2140 3464
2141 if (w->reschedule_cb) 3465 if (w->reschedule_cb)
2142 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3466 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2143 else if (w->interval) 3467 else if (w->interval)
2144 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3468 periodic_recalc (EV_A_ w);
2145 3469
2146 ANHE_at_cache (periodics [i]); 3470 ANHE_at_cache (periodics [i]);
2147 } 3471 }
2148 3472
2149 reheap (periodics, periodiccnt); 3473 reheap (periodics, periodiccnt);
2150} 3474}
2151#endif 3475#endif
2152 3476
2153/* adjust all timers by a given offset */ 3477/* adjust all timers by a given offset */
2154static void noinline 3478noinline ecb_cold
3479static void
2155timers_reschedule (EV_P_ ev_tstamp adjust) 3480timers_reschedule (EV_P_ ev_tstamp adjust)
2156{ 3481{
2157 int i; 3482 int i;
2158 3483
2159 for (i = 0; i < timercnt; ++i) 3484 for (i = 0; i < timercnt; ++i)
… …
2196 * doesn't hurt either as we only do this on time-jumps or 3521 * doesn't hurt either as we only do this on time-jumps or
2197 * in the unlikely event of having been preempted here. 3522 * in the unlikely event of having been preempted here.
2198 */ 3523 */
2199 for (i = 4; --i; ) 3524 for (i = 4; --i; )
2200 { 3525 {
3526 ev_tstamp diff;
2201 rtmn_diff = ev_rt_now - mn_now; 3527 rtmn_diff = ev_rt_now - mn_now;
2202 3528
3529 diff = odiff - rtmn_diff;
3530
2203 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3531 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2204 return; /* all is well */ 3532 return; /* all is well */
2205 3533
2206 ev_rt_now = ev_time (); 3534 ev_rt_now = ev_time ();
2207 mn_now = get_clock (); 3535 mn_now = get_clock ();
2208 now_floor = mn_now; 3536 now_floor = mn_now;
… …
2230 3558
2231 mn_now = ev_rt_now; 3559 mn_now = ev_rt_now;
2232 } 3560 }
2233} 3561}
2234 3562
2235void 3563int
2236ev_loop (EV_P_ int flags) 3564ev_run (EV_P_ int flags)
2237{ 3565{
2238#if EV_MINIMAL < 2 3566#if EV_FEATURE_API
2239 ++loop_depth; 3567 ++loop_depth;
2240#endif 3568#endif
2241 3569
2242 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3570 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2243 3571
2244 loop_done = EVUNLOOP_CANCEL; 3572 loop_done = EVBREAK_CANCEL;
2245 3573
2246 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3574 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2247 3575
2248 do 3576 do
2249 { 3577 {
2250#if EV_VERIFY >= 2 3578#if EV_VERIFY >= 2
2251 ev_loop_verify (EV_A); 3579 ev_verify (EV_A);
2252#endif 3580#endif
2253 3581
2254#ifndef _WIN32 3582#ifndef _WIN32
2255 if (expect_false (curpid)) /* penalise the forking check even more */ 3583 if (expect_false (curpid)) /* penalise the forking check even more */
2256 if (expect_false (getpid () != curpid)) 3584 if (expect_false (getpid () != curpid))
… …
2268 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3596 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2269 EV_INVOKE_PENDING; 3597 EV_INVOKE_PENDING;
2270 } 3598 }
2271#endif 3599#endif
2272 3600
3601#if EV_PREPARE_ENABLE
2273 /* queue prepare watchers (and execute them) */ 3602 /* queue prepare watchers (and execute them) */
2274 if (expect_false (preparecnt)) 3603 if (expect_false (preparecnt))
2275 { 3604 {
2276 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3605 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2277 EV_INVOKE_PENDING; 3606 EV_INVOKE_PENDING;
2278 } 3607 }
3608#endif
2279 3609
2280 if (expect_false (loop_done)) 3610 if (expect_false (loop_done))
2281 break; 3611 break;
2282 3612
2283 /* we might have forked, so reify kernel state if necessary */ 3613 /* we might have forked, so reify kernel state if necessary */
… …
2290 /* calculate blocking time */ 3620 /* calculate blocking time */
2291 { 3621 {
2292 ev_tstamp waittime = 0.; 3622 ev_tstamp waittime = 0.;
2293 ev_tstamp sleeptime = 0.; 3623 ev_tstamp sleeptime = 0.;
2294 3624
3625 /* remember old timestamp for io_blocktime calculation */
3626 ev_tstamp prev_mn_now = mn_now;
3627
3628 /* update time to cancel out callback processing overhead */
3629 time_update (EV_A_ 1e100);
3630
3631 /* from now on, we want a pipe-wake-up */
3632 pipe_write_wanted = 1;
3633
3634 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3635
2295 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3636 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2296 { 3637 {
2297 /* remember old timestamp for io_blocktime calculation */
2298 ev_tstamp prev_mn_now = mn_now;
2299
2300 /* update time to cancel out callback processing overhead */
2301 time_update (EV_A_ 1e100);
2302
2303 waittime = MAX_BLOCKTIME; 3638 waittime = MAX_BLOCKTIME;
2304 3639
2305 if (timercnt) 3640 if (timercnt)
2306 { 3641 {
2307 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3642 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2308 if (waittime > to) waittime = to; 3643 if (waittime > to) waittime = to;
2309 } 3644 }
2310 3645
2311#if EV_PERIODIC_ENABLE 3646#if EV_PERIODIC_ENABLE
2312 if (periodiccnt) 3647 if (periodiccnt)
2313 { 3648 {
2314 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3649 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2315 if (waittime > to) waittime = to; 3650 if (waittime > to) waittime = to;
2316 } 3651 }
2317#endif 3652#endif
2318 3653
2319 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3654 /* don't let timeouts decrease the waittime below timeout_blocktime */
2320 if (expect_false (waittime < timeout_blocktime)) 3655 if (expect_false (waittime < timeout_blocktime))
2321 waittime = timeout_blocktime; 3656 waittime = timeout_blocktime;
3657
3658 /* at this point, we NEED to wait, so we have to ensure */
3659 /* to pass a minimum nonzero value to the backend */
3660 if (expect_false (waittime < backend_mintime))
3661 waittime = backend_mintime;
2322 3662
2323 /* extra check because io_blocktime is commonly 0 */ 3663 /* extra check because io_blocktime is commonly 0 */
2324 if (expect_false (io_blocktime)) 3664 if (expect_false (io_blocktime))
2325 { 3665 {
2326 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3666 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2327 3667
2328 if (sleeptime > waittime - backend_fudge) 3668 if (sleeptime > waittime - backend_mintime)
2329 sleeptime = waittime - backend_fudge; 3669 sleeptime = waittime - backend_mintime;
2330 3670
2331 if (expect_true (sleeptime > 0.)) 3671 if (expect_true (sleeptime > 0.))
2332 { 3672 {
2333 ev_sleep (sleeptime); 3673 ev_sleep (sleeptime);
2334 waittime -= sleeptime; 3674 waittime -= sleeptime;
2335 } 3675 }
2336 } 3676 }
2337 } 3677 }
2338 3678
2339#if EV_MINIMAL < 2 3679#if EV_FEATURE_API
2340 ++loop_count; 3680 ++loop_count;
2341#endif 3681#endif
2342 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3682 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2343 backend_poll (EV_A_ waittime); 3683 backend_poll (EV_A_ waittime);
2344 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3684 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3685
3686 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3687
3688 ECB_MEMORY_FENCE_ACQUIRE;
3689 if (pipe_write_skipped)
3690 {
3691 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3692 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3693 }
3694
2345 3695
2346 /* update ev_rt_now, do magic */ 3696 /* update ev_rt_now, do magic */
2347 time_update (EV_A_ waittime + sleeptime); 3697 time_update (EV_A_ waittime + sleeptime);
2348 } 3698 }
2349 3699
… …
2356#if EV_IDLE_ENABLE 3706#if EV_IDLE_ENABLE
2357 /* queue idle watchers unless other events are pending */ 3707 /* queue idle watchers unless other events are pending */
2358 idle_reify (EV_A); 3708 idle_reify (EV_A);
2359#endif 3709#endif
2360 3710
3711#if EV_CHECK_ENABLE
2361 /* queue check watchers, to be executed first */ 3712 /* queue check watchers, to be executed first */
2362 if (expect_false (checkcnt)) 3713 if (expect_false (checkcnt))
2363 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3714 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3715#endif
2364 3716
2365 EV_INVOKE_PENDING; 3717 EV_INVOKE_PENDING;
2366 } 3718 }
2367 while (expect_true ( 3719 while (expect_true (
2368 activecnt 3720 activecnt
2369 && !loop_done 3721 && !loop_done
2370 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3722 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2371 )); 3723 ));
2372 3724
2373 if (loop_done == EVUNLOOP_ONE) 3725 if (loop_done == EVBREAK_ONE)
2374 loop_done = EVUNLOOP_CANCEL; 3726 loop_done = EVBREAK_CANCEL;
2375 3727
2376#if EV_MINIMAL < 2 3728#if EV_FEATURE_API
2377 --loop_depth; 3729 --loop_depth;
2378#endif 3730#endif
2379}
2380 3731
3732 return activecnt;
3733}
3734
2381void 3735void
2382ev_unloop (EV_P_ int how) 3736ev_break (EV_P_ int how) EV_THROW
2383{ 3737{
2384 loop_done = how; 3738 loop_done = how;
2385} 3739}
2386 3740
2387void 3741void
2388ev_ref (EV_P) 3742ev_ref (EV_P) EV_THROW
2389{ 3743{
2390 ++activecnt; 3744 ++activecnt;
2391} 3745}
2392 3746
2393void 3747void
2394ev_unref (EV_P) 3748ev_unref (EV_P) EV_THROW
2395{ 3749{
2396 --activecnt; 3750 --activecnt;
2397} 3751}
2398 3752
2399void 3753void
2400ev_now_update (EV_P) 3754ev_now_update (EV_P) EV_THROW
2401{ 3755{
2402 time_update (EV_A_ 1e100); 3756 time_update (EV_A_ 1e100);
2403} 3757}
2404 3758
2405void 3759void
2406ev_suspend (EV_P) 3760ev_suspend (EV_P) EV_THROW
2407{ 3761{
2408 ev_now_update (EV_A); 3762 ev_now_update (EV_A);
2409} 3763}
2410 3764
2411void 3765void
2412ev_resume (EV_P) 3766ev_resume (EV_P) EV_THROW
2413{ 3767{
2414 ev_tstamp mn_prev = mn_now; 3768 ev_tstamp mn_prev = mn_now;
2415 3769
2416 ev_now_update (EV_A); 3770 ev_now_update (EV_A);
2417 timers_reschedule (EV_A_ mn_now - mn_prev); 3771 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2456 w->pending = 0; 3810 w->pending = 0;
2457 } 3811 }
2458} 3812}
2459 3813
2460int 3814int
2461ev_clear_pending (EV_P_ void *w) 3815ev_clear_pending (EV_P_ void *w) EV_THROW
2462{ 3816{
2463 W w_ = (W)w; 3817 W w_ = (W)w;
2464 int pending = w_->pending; 3818 int pending = w_->pending;
2465 3819
2466 if (expect_true (pending)) 3820 if (expect_true (pending))
… …
2498 w->active = 0; 3852 w->active = 0;
2499} 3853}
2500 3854
2501/*****************************************************************************/ 3855/*****************************************************************************/
2502 3856
2503void noinline 3857noinline
3858void
2504ev_io_start (EV_P_ ev_io *w) 3859ev_io_start (EV_P_ ev_io *w) EV_THROW
2505{ 3860{
2506 int fd = w->fd; 3861 int fd = w->fd;
2507 3862
2508 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
2509 return; 3864 return;
2510 3865
2511 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3866 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2512 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3867 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2513 3868
2514 EV_FREQUENT_CHECK; 3869 EV_FREQUENT_CHECK;
2515 3870
2516 ev_start (EV_A_ (W)w, 1); 3871 ev_start (EV_A_ (W)w, 1);
2517 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3872 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2518 wlist_add (&anfds[fd].head, (WL)w); 3873 wlist_add (&anfds[fd].head, (WL)w);
2519 3874
3875 /* common bug, apparently */
3876 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3877
2520 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3878 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2521 w->events &= ~EV__IOFDSET; 3879 w->events &= ~EV__IOFDSET;
2522 3880
2523 EV_FREQUENT_CHECK; 3881 EV_FREQUENT_CHECK;
2524} 3882}
2525 3883
2526void noinline 3884noinline
3885void
2527ev_io_stop (EV_P_ ev_io *w) 3886ev_io_stop (EV_P_ ev_io *w) EV_THROW
2528{ 3887{
2529 clear_pending (EV_A_ (W)w); 3888 clear_pending (EV_A_ (W)w);
2530 if (expect_false (!ev_is_active (w))) 3889 if (expect_false (!ev_is_active (w)))
2531 return; 3890 return;
2532 3891
… …
2535 EV_FREQUENT_CHECK; 3894 EV_FREQUENT_CHECK;
2536 3895
2537 wlist_del (&anfds[w->fd].head, (WL)w); 3896 wlist_del (&anfds[w->fd].head, (WL)w);
2538 ev_stop (EV_A_ (W)w); 3897 ev_stop (EV_A_ (W)w);
2539 3898
2540 fd_change (EV_A_ w->fd, 1); 3899 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2541 3900
2542 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
2543} 3902}
2544 3903
2545void noinline 3904noinline
3905void
2546ev_timer_start (EV_P_ ev_timer *w) 3906ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2547{ 3907{
2548 if (expect_false (ev_is_active (w))) 3908 if (expect_false (ev_is_active (w)))
2549 return; 3909 return;
2550 3910
2551 ev_at (w) += mn_now; 3911 ev_at (w) += mn_now;
… …
2564 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
2565 3925
2566 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3926 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2567} 3927}
2568 3928
2569void noinline 3929noinline
3930void
2570ev_timer_stop (EV_P_ ev_timer *w) 3931ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2571{ 3932{
2572 clear_pending (EV_A_ (W)w); 3933 clear_pending (EV_A_ (W)w);
2573 if (expect_false (!ev_is_active (w))) 3934 if (expect_false (!ev_is_active (w)))
2574 return; 3935 return;
2575 3936
… …
2587 timers [active] = timers [timercnt + HEAP0]; 3948 timers [active] = timers [timercnt + HEAP0];
2588 adjustheap (timers, timercnt, active); 3949 adjustheap (timers, timercnt, active);
2589 } 3950 }
2590 } 3951 }
2591 3952
2592 EV_FREQUENT_CHECK;
2593
2594 ev_at (w) -= mn_now; 3953 ev_at (w) -= mn_now;
2595 3954
2596 ev_stop (EV_A_ (W)w); 3955 ev_stop (EV_A_ (W)w);
2597}
2598 3956
3957 EV_FREQUENT_CHECK;
3958}
3959
2599void noinline 3960noinline
3961void
2600ev_timer_again (EV_P_ ev_timer *w) 3962ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2601{ 3963{
2602 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
3965
3966 clear_pending (EV_A_ (W)w);
2603 3967
2604 if (ev_is_active (w)) 3968 if (ev_is_active (w))
2605 { 3969 {
2606 if (w->repeat) 3970 if (w->repeat)
2607 { 3971 {
… …
2620 3984
2621 EV_FREQUENT_CHECK; 3985 EV_FREQUENT_CHECK;
2622} 3986}
2623 3987
2624ev_tstamp 3988ev_tstamp
2625ev_timer_remaining (EV_P_ ev_timer *w) 3989ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2626{ 3990{
2627 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3991 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2628} 3992}
2629 3993
2630#if EV_PERIODIC_ENABLE 3994#if EV_PERIODIC_ENABLE
2631void noinline 3995noinline
3996void
2632ev_periodic_start (EV_P_ ev_periodic *w) 3997ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2633{ 3998{
2634 if (expect_false (ev_is_active (w))) 3999 if (expect_false (ev_is_active (w)))
2635 return; 4000 return;
2636 4001
2637 if (w->reschedule_cb) 4002 if (w->reschedule_cb)
2638 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4003 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2639 else if (w->interval) 4004 else if (w->interval)
2640 { 4005 {
2641 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4006 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2642 /* this formula differs from the one in periodic_reify because we do not always round up */ 4007 periodic_recalc (EV_A_ w);
2643 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2644 } 4008 }
2645 else 4009 else
2646 ev_at (w) = w->offset; 4010 ev_at (w) = w->offset;
2647 4011
2648 EV_FREQUENT_CHECK; 4012 EV_FREQUENT_CHECK;
… …
2657 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
2658 4022
2659 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4023 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2660} 4024}
2661 4025
2662void noinline 4026noinline
4027void
2663ev_periodic_stop (EV_P_ ev_periodic *w) 4028ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2664{ 4029{
2665 clear_pending (EV_A_ (W)w); 4030 clear_pending (EV_A_ (W)w);
2666 if (expect_false (!ev_is_active (w))) 4031 if (expect_false (!ev_is_active (w)))
2667 return; 4032 return;
2668 4033
… …
2680 periodics [active] = periodics [periodiccnt + HEAP0]; 4045 periodics [active] = periodics [periodiccnt + HEAP0];
2681 adjustheap (periodics, periodiccnt, active); 4046 adjustheap (periodics, periodiccnt, active);
2682 } 4047 }
2683 } 4048 }
2684 4049
2685 EV_FREQUENT_CHECK;
2686
2687 ev_stop (EV_A_ (W)w); 4050 ev_stop (EV_A_ (W)w);
2688}
2689 4051
4052 EV_FREQUENT_CHECK;
4053}
4054
2690void noinline 4055noinline
4056void
2691ev_periodic_again (EV_P_ ev_periodic *w) 4057ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2692{ 4058{
2693 /* TODO: use adjustheap and recalculation */ 4059 /* TODO: use adjustheap and recalculation */
2694 ev_periodic_stop (EV_A_ w); 4060 ev_periodic_stop (EV_A_ w);
2695 ev_periodic_start (EV_A_ w); 4061 ev_periodic_start (EV_A_ w);
2696} 4062}
… …
2698 4064
2699#ifndef SA_RESTART 4065#ifndef SA_RESTART
2700# define SA_RESTART 0 4066# define SA_RESTART 0
2701#endif 4067#endif
2702 4068
4069#if EV_SIGNAL_ENABLE
4070
2703void noinline 4071noinline
4072void
2704ev_signal_start (EV_P_ ev_signal *w) 4073ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2705{ 4074{
2706 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
2707 return; 4076 return;
2708 4077
2709 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4078 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2711#if EV_MULTIPLICITY 4080#if EV_MULTIPLICITY
2712 assert (("libev: a signal must not be attached to two different loops", 4081 assert (("libev: a signal must not be attached to two different loops",
2713 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4082 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2714 4083
2715 signals [w->signum - 1].loop = EV_A; 4084 signals [w->signum - 1].loop = EV_A;
4085 ECB_MEMORY_FENCE_RELEASE;
2716#endif 4086#endif
2717 4087
2718 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
2719 4089
2720#if EV_USE_SIGNALFD 4090#if EV_USE_SIGNALFD
… …
2767 sa.sa_handler = ev_sighandler; 4137 sa.sa_handler = ev_sighandler;
2768 sigfillset (&sa.sa_mask); 4138 sigfillset (&sa.sa_mask);
2769 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4139 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2770 sigaction (w->signum, &sa, 0); 4140 sigaction (w->signum, &sa, 0);
2771 4141
4142 if (origflags & EVFLAG_NOSIGMASK)
4143 {
2772 sigemptyset (&sa.sa_mask); 4144 sigemptyset (&sa.sa_mask);
2773 sigaddset (&sa.sa_mask, w->signum); 4145 sigaddset (&sa.sa_mask, w->signum);
2774 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4146 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4147 }
2775#endif 4148#endif
2776 } 4149 }
2777 4150
2778 EV_FREQUENT_CHECK; 4151 EV_FREQUENT_CHECK;
2779} 4152}
2780 4153
2781void noinline 4154noinline
4155void
2782ev_signal_stop (EV_P_ ev_signal *w) 4156ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2783{ 4157{
2784 clear_pending (EV_A_ (W)w); 4158 clear_pending (EV_A_ (W)w);
2785 if (expect_false (!ev_is_active (w))) 4159 if (expect_false (!ev_is_active (w)))
2786 return; 4160 return;
2787 4161
… …
2813 } 4187 }
2814 4188
2815 EV_FREQUENT_CHECK; 4189 EV_FREQUENT_CHECK;
2816} 4190}
2817 4191
4192#endif
4193
4194#if EV_CHILD_ENABLE
4195
2818void 4196void
2819ev_child_start (EV_P_ ev_child *w) 4197ev_child_start (EV_P_ ev_child *w) EV_THROW
2820{ 4198{
2821#if EV_MULTIPLICITY 4199#if EV_MULTIPLICITY
2822 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4200 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2823#endif 4201#endif
2824 if (expect_false (ev_is_active (w))) 4202 if (expect_false (ev_is_active (w)))
2825 return; 4203 return;
2826 4204
2827 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
2828 4206
2829 ev_start (EV_A_ (W)w, 1); 4207 ev_start (EV_A_ (W)w, 1);
2830 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4208 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2831 4209
2832 EV_FREQUENT_CHECK; 4210 EV_FREQUENT_CHECK;
2833} 4211}
2834 4212
2835void 4213void
2836ev_child_stop (EV_P_ ev_child *w) 4214ev_child_stop (EV_P_ ev_child *w) EV_THROW
2837{ 4215{
2838 clear_pending (EV_A_ (W)w); 4216 clear_pending (EV_A_ (W)w);
2839 if (expect_false (!ev_is_active (w))) 4217 if (expect_false (!ev_is_active (w)))
2840 return; 4218 return;
2841 4219
2842 EV_FREQUENT_CHECK; 4220 EV_FREQUENT_CHECK;
2843 4221
2844 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4222 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2845 ev_stop (EV_A_ (W)w); 4223 ev_stop (EV_A_ (W)w);
2846 4224
2847 EV_FREQUENT_CHECK; 4225 EV_FREQUENT_CHECK;
2848} 4226}
4227
4228#endif
2849 4229
2850#if EV_STAT_ENABLE 4230#if EV_STAT_ENABLE
2851 4231
2852# ifdef _WIN32 4232# ifdef _WIN32
2853# undef lstat 4233# undef lstat
… …
2856 4236
2857#define DEF_STAT_INTERVAL 5.0074891 4237#define DEF_STAT_INTERVAL 5.0074891
2858#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4238#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2859#define MIN_STAT_INTERVAL 0.1074891 4239#define MIN_STAT_INTERVAL 0.1074891
2860 4240
2861static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4241noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2862 4242
2863#if EV_USE_INOTIFY 4243#if EV_USE_INOTIFY
2864# define EV_INOTIFY_BUFSIZE 8192
2865 4244
2866static void noinline 4245/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4246# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4247
4248noinline
4249static void
2867infy_add (EV_P_ ev_stat *w) 4250infy_add (EV_P_ ev_stat *w)
2868{ 4251{
2869 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); 4252 w->wd = inotify_add_watch (fs_fd, w->path,
4253 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4254 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4255 | IN_DONT_FOLLOW | IN_MASK_ADD);
2870 4256
2871 if (w->wd >= 0) 4257 if (w->wd >= 0)
2872 { 4258 {
2873 struct statfs sfs; 4259 struct statfs sfs;
2874 4260
… …
2878 4264
2879 if (!fs_2625) 4265 if (!fs_2625)
2880 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4266 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2881 else if (!statfs (w->path, &sfs) 4267 else if (!statfs (w->path, &sfs)
2882 && (sfs.f_type == 0x1373 /* devfs */ 4268 && (sfs.f_type == 0x1373 /* devfs */
4269 || sfs.f_type == 0x4006 /* fat */
4270 || sfs.f_type == 0x4d44 /* msdos */
2883 || sfs.f_type == 0xEF53 /* ext2/3 */ 4271 || sfs.f_type == 0xEF53 /* ext2/3 */
4272 || sfs.f_type == 0x72b6 /* jffs2 */
4273 || sfs.f_type == 0x858458f6 /* ramfs */
4274 || sfs.f_type == 0x5346544e /* ntfs */
2884 || sfs.f_type == 0x3153464a /* jfs */ 4275 || sfs.f_type == 0x3153464a /* jfs */
4276 || sfs.f_type == 0x9123683e /* btrfs */
2885 || sfs.f_type == 0x52654973 /* reiser3 */ 4277 || sfs.f_type == 0x52654973 /* reiser3 */
2886 || sfs.f_type == 0x01021994 /* tempfs */ 4278 || sfs.f_type == 0x01021994 /* tmpfs */
2887 || sfs.f_type == 0x58465342 /* xfs */)) 4279 || sfs.f_type == 0x58465342 /* xfs */))
2888 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4280 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2889 else 4281 else
2890 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4282 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2891 } 4283 }
… …
2912 if (!pend || pend == path) 4304 if (!pend || pend == path)
2913 break; 4305 break;
2914 4306
2915 *pend = 0; 4307 *pend = 0;
2916 w->wd = inotify_add_watch (fs_fd, path, mask); 4308 w->wd = inotify_add_watch (fs_fd, path, mask);
2917 } 4309 }
2918 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4310 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2919 } 4311 }
2920 } 4312 }
2921 4313
2922 if (w->wd >= 0) 4314 if (w->wd >= 0)
2923 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4315 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2924 4316
2925 /* now re-arm timer, if required */ 4317 /* now re-arm timer, if required */
2926 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4318 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2927 ev_timer_again (EV_A_ &w->timer); 4319 ev_timer_again (EV_A_ &w->timer);
2928 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4320 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2929} 4321}
2930 4322
2931static void noinline 4323noinline
4324static void
2932infy_del (EV_P_ ev_stat *w) 4325infy_del (EV_P_ ev_stat *w)
2933{ 4326{
2934 int slot; 4327 int slot;
2935 int wd = w->wd; 4328 int wd = w->wd;
2936 4329
2937 if (wd < 0) 4330 if (wd < 0)
2938 return; 4331 return;
2939 4332
2940 w->wd = -2; 4333 w->wd = -2;
2941 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4334 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2942 wlist_del (&fs_hash [slot].head, (WL)w); 4335 wlist_del (&fs_hash [slot].head, (WL)w);
2943 4336
2944 /* remove this watcher, if others are watching it, they will rearm */ 4337 /* remove this watcher, if others are watching it, they will rearm */
2945 inotify_rm_watch (fs_fd, wd); 4338 inotify_rm_watch (fs_fd, wd);
2946} 4339}
2947 4340
2948static void noinline 4341noinline
4342static void
2949infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4343infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2950{ 4344{
2951 if (slot < 0) 4345 if (slot < 0)
2952 /* overflow, need to check for all hash slots */ 4346 /* overflow, need to check for all hash slots */
2953 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4347 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2954 infy_wd (EV_A_ slot, wd, ev); 4348 infy_wd (EV_A_ slot, wd, ev);
2955 else 4349 else
2956 { 4350 {
2957 WL w_; 4351 WL w_;
2958 4352
2959 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4353 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2960 { 4354 {
2961 ev_stat *w = (ev_stat *)w_; 4355 ev_stat *w = (ev_stat *)w_;
2962 w_ = w_->next; /* lets us remove this watcher and all before it */ 4356 w_ = w_->next; /* lets us remove this watcher and all before it */
2963 4357
2964 if (w->wd == wd || wd == -1) 4358 if (w->wd == wd || wd == -1)
2965 { 4359 {
2966 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4360 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2967 { 4361 {
2968 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4362 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2969 w->wd = -1; 4363 w->wd = -1;
2970 infy_add (EV_A_ w); /* re-add, no matter what */ 4364 infy_add (EV_A_ w); /* re-add, no matter what */
2971 } 4365 }
2972 4366
2973 stat_timer_cb (EV_A_ &w->timer, 0); 4367 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2978 4372
2979static void 4373static void
2980infy_cb (EV_P_ ev_io *w, int revents) 4374infy_cb (EV_P_ ev_io *w, int revents)
2981{ 4375{
2982 char buf [EV_INOTIFY_BUFSIZE]; 4376 char buf [EV_INOTIFY_BUFSIZE];
2983 struct inotify_event *ev = (struct inotify_event *)buf;
2984 int ofs; 4377 int ofs;
2985 int len = read (fs_fd, buf, sizeof (buf)); 4378 int len = read (fs_fd, buf, sizeof (buf));
2986 4379
2987 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4380 for (ofs = 0; ofs < len; )
4381 {
4382 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2988 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4383 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4384 ofs += sizeof (struct inotify_event) + ev->len;
4385 }
2989} 4386}
2990 4387
2991inline_size void 4388inline_size ecb_cold
4389void
2992check_2625 (EV_P) 4390ev_check_2625 (EV_P)
2993{ 4391{
2994 /* kernels < 2.6.25 are borked 4392 /* kernels < 2.6.25 are borked
2995 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4393 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2996 */ 4394 */
2997 struct utsname buf; 4395 if (ev_linux_version () < 0x020619)
2998 int major, minor, micro;
2999
3000 if (uname (&buf))
3001 return;
3002
3003 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
3004 return;
3005
3006 if (major < 2
3007 || (major == 2 && minor < 6)
3008 || (major == 2 && minor == 6 && micro < 25))
3009 return; 4396 return;
3010 4397
3011 fs_2625 = 1; 4398 fs_2625 = 1;
3012} 4399}
3013 4400
3014inline_size int 4401inline_size int
3015infy_newfd (void) 4402infy_newfd (void)
3016{ 4403{
3017#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4404#if defined IN_CLOEXEC && defined IN_NONBLOCK
3018 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4405 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3019 if (fd >= 0) 4406 if (fd >= 0)
3020 return fd; 4407 return fd;
3021#endif 4408#endif
3022 return inotify_init (); 4409 return inotify_init ();
… …
3028 if (fs_fd != -2) 4415 if (fs_fd != -2)
3029 return; 4416 return;
3030 4417
3031 fs_fd = -1; 4418 fs_fd = -1;
3032 4419
3033 check_2625 (EV_A); 4420 ev_check_2625 (EV_A);
3034 4421
3035 fs_fd = infy_newfd (); 4422 fs_fd = infy_newfd ();
3036 4423
3037 if (fs_fd >= 0) 4424 if (fs_fd >= 0)
3038 { 4425 {
… …
3063 ev_io_set (&fs_w, fs_fd, EV_READ); 4450 ev_io_set (&fs_w, fs_fd, EV_READ);
3064 ev_io_start (EV_A_ &fs_w); 4451 ev_io_start (EV_A_ &fs_w);
3065 ev_unref (EV_A); 4452 ev_unref (EV_A);
3066 } 4453 }
3067 4454
3068 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4455 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3069 { 4456 {
3070 WL w_ = fs_hash [slot].head; 4457 WL w_ = fs_hash [slot].head;
3071 fs_hash [slot].head = 0; 4458 fs_hash [slot].head = 0;
3072 4459
3073 while (w_) 4460 while (w_)
… …
3097#else 4484#else
3098# define EV_LSTAT(p,b) lstat (p, b) 4485# define EV_LSTAT(p,b) lstat (p, b)
3099#endif 4486#endif
3100 4487
3101void 4488void
3102ev_stat_stat (EV_P_ ev_stat *w) 4489ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3103{ 4490{
3104 if (lstat (w->path, &w->attr) < 0) 4491 if (lstat (w->path, &w->attr) < 0)
3105 w->attr.st_nlink = 0; 4492 w->attr.st_nlink = 0;
3106 else if (!w->attr.st_nlink) 4493 else if (!w->attr.st_nlink)
3107 w->attr.st_nlink = 1; 4494 w->attr.st_nlink = 1;
3108} 4495}
3109 4496
3110static void noinline 4497noinline
4498static void
3111stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4499stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3112{ 4500{
3113 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4501 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3114 4502
3115 ev_statdata prev = w->attr; 4503 ev_statdata prev = w->attr;
… …
3146 ev_feed_event (EV_A_ w, EV_STAT); 4534 ev_feed_event (EV_A_ w, EV_STAT);
3147 } 4535 }
3148} 4536}
3149 4537
3150void 4538void
3151ev_stat_start (EV_P_ ev_stat *w) 4539ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3152{ 4540{
3153 if (expect_false (ev_is_active (w))) 4541 if (expect_false (ev_is_active (w)))
3154 return; 4542 return;
3155 4543
3156 ev_stat_stat (EV_A_ w); 4544 ev_stat_stat (EV_A_ w);
… …
3177 4565
3178 EV_FREQUENT_CHECK; 4566 EV_FREQUENT_CHECK;
3179} 4567}
3180 4568
3181void 4569void
3182ev_stat_stop (EV_P_ ev_stat *w) 4570ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3183{ 4571{
3184 clear_pending (EV_A_ (W)w); 4572 clear_pending (EV_A_ (W)w);
3185 if (expect_false (!ev_is_active (w))) 4573 if (expect_false (!ev_is_active (w)))
3186 return; 4574 return;
3187 4575
… …
3203} 4591}
3204#endif 4592#endif
3205 4593
3206#if EV_IDLE_ENABLE 4594#if EV_IDLE_ENABLE
3207void 4595void
3208ev_idle_start (EV_P_ ev_idle *w) 4596ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3209{ 4597{
3210 if (expect_false (ev_is_active (w))) 4598 if (expect_false (ev_is_active (w)))
3211 return; 4599 return;
3212 4600
3213 pri_adjust (EV_A_ (W)w); 4601 pri_adjust (EV_A_ (W)w);
… …
3226 4614
3227 EV_FREQUENT_CHECK; 4615 EV_FREQUENT_CHECK;
3228} 4616}
3229 4617
3230void 4618void
3231ev_idle_stop (EV_P_ ev_idle *w) 4619ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3232{ 4620{
3233 clear_pending (EV_A_ (W)w); 4621 clear_pending (EV_A_ (W)w);
3234 if (expect_false (!ev_is_active (w))) 4622 if (expect_false (!ev_is_active (w)))
3235 return; 4623 return;
3236 4624
… …
3248 4636
3249 EV_FREQUENT_CHECK; 4637 EV_FREQUENT_CHECK;
3250} 4638}
3251#endif 4639#endif
3252 4640
4641#if EV_PREPARE_ENABLE
3253void 4642void
3254ev_prepare_start (EV_P_ ev_prepare *w) 4643ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3255{ 4644{
3256 if (expect_false (ev_is_active (w))) 4645 if (expect_false (ev_is_active (w)))
3257 return; 4646 return;
3258 4647
3259 EV_FREQUENT_CHECK; 4648 EV_FREQUENT_CHECK;
… …
3264 4653
3265 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
3266} 4655}
3267 4656
3268void 4657void
3269ev_prepare_stop (EV_P_ ev_prepare *w) 4658ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3270{ 4659{
3271 clear_pending (EV_A_ (W)w); 4660 clear_pending (EV_A_ (W)w);
3272 if (expect_false (!ev_is_active (w))) 4661 if (expect_false (!ev_is_active (w)))
3273 return; 4662 return;
3274 4663
… …
3283 4672
3284 ev_stop (EV_A_ (W)w); 4673 ev_stop (EV_A_ (W)w);
3285 4674
3286 EV_FREQUENT_CHECK; 4675 EV_FREQUENT_CHECK;
3287} 4676}
4677#endif
3288 4678
4679#if EV_CHECK_ENABLE
3289void 4680void
3290ev_check_start (EV_P_ ev_check *w) 4681ev_check_start (EV_P_ ev_check *w) EV_THROW
3291{ 4682{
3292 if (expect_false (ev_is_active (w))) 4683 if (expect_false (ev_is_active (w)))
3293 return; 4684 return;
3294 4685
3295 EV_FREQUENT_CHECK; 4686 EV_FREQUENT_CHECK;
… …
3300 4691
3301 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
3302} 4693}
3303 4694
3304void 4695void
3305ev_check_stop (EV_P_ ev_check *w) 4696ev_check_stop (EV_P_ ev_check *w) EV_THROW
3306{ 4697{
3307 clear_pending (EV_A_ (W)w); 4698 clear_pending (EV_A_ (W)w);
3308 if (expect_false (!ev_is_active (w))) 4699 if (expect_false (!ev_is_active (w)))
3309 return; 4700 return;
3310 4701
… …
3319 4710
3320 ev_stop (EV_A_ (W)w); 4711 ev_stop (EV_A_ (W)w);
3321 4712
3322 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
3323} 4714}
4715#endif
3324 4716
3325#if EV_EMBED_ENABLE 4717#if EV_EMBED_ENABLE
3326void noinline 4718noinline
4719void
3327ev_embed_sweep (EV_P_ ev_embed *w) 4720ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3328{ 4721{
3329 ev_loop (w->other, EVLOOP_NONBLOCK); 4722 ev_run (w->other, EVRUN_NOWAIT);
3330} 4723}
3331 4724
3332static void 4725static void
3333embed_io_cb (EV_P_ ev_io *io, int revents) 4726embed_io_cb (EV_P_ ev_io *io, int revents)
3334{ 4727{
3335 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4728 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3336 4729
3337 if (ev_cb (w)) 4730 if (ev_cb (w))
3338 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4731 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3339 else 4732 else
3340 ev_loop (w->other, EVLOOP_NONBLOCK); 4733 ev_run (w->other, EVRUN_NOWAIT);
3341} 4734}
3342 4735
3343static void 4736static void
3344embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4737embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3345{ 4738{
… …
3349 EV_P = w->other; 4742 EV_P = w->other;
3350 4743
3351 while (fdchangecnt) 4744 while (fdchangecnt)
3352 { 4745 {
3353 fd_reify (EV_A); 4746 fd_reify (EV_A);
3354 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4747 ev_run (EV_A_ EVRUN_NOWAIT);
3355 } 4748 }
3356 } 4749 }
3357} 4750}
3358 4751
3359static void 4752static void
… …
3365 4758
3366 { 4759 {
3367 EV_P = w->other; 4760 EV_P = w->other;
3368 4761
3369 ev_loop_fork (EV_A); 4762 ev_loop_fork (EV_A);
3370 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4763 ev_run (EV_A_ EVRUN_NOWAIT);
3371 } 4764 }
3372 4765
3373 ev_embed_start (EV_A_ w); 4766 ev_embed_start (EV_A_ w);
3374} 4767}
3375 4768
… …
3380 ev_idle_stop (EV_A_ idle); 4773 ev_idle_stop (EV_A_ idle);
3381} 4774}
3382#endif 4775#endif
3383 4776
3384void 4777void
3385ev_embed_start (EV_P_ ev_embed *w) 4778ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3386{ 4779{
3387 if (expect_false (ev_is_active (w))) 4780 if (expect_false (ev_is_active (w)))
3388 return; 4781 return;
3389 4782
3390 { 4783 {
… …
3411 4804
3412 EV_FREQUENT_CHECK; 4805 EV_FREQUENT_CHECK;
3413} 4806}
3414 4807
3415void 4808void
3416ev_embed_stop (EV_P_ ev_embed *w) 4809ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3417{ 4810{
3418 clear_pending (EV_A_ (W)w); 4811 clear_pending (EV_A_ (W)w);
3419 if (expect_false (!ev_is_active (w))) 4812 if (expect_false (!ev_is_active (w)))
3420 return; 4813 return;
3421 4814
… …
3423 4816
3424 ev_io_stop (EV_A_ &w->io); 4817 ev_io_stop (EV_A_ &w->io);
3425 ev_prepare_stop (EV_A_ &w->prepare); 4818 ev_prepare_stop (EV_A_ &w->prepare);
3426 ev_fork_stop (EV_A_ &w->fork); 4819 ev_fork_stop (EV_A_ &w->fork);
3427 4820
4821 ev_stop (EV_A_ (W)w);
4822
3428 EV_FREQUENT_CHECK; 4823 EV_FREQUENT_CHECK;
3429} 4824}
3430#endif 4825#endif
3431 4826
3432#if EV_FORK_ENABLE 4827#if EV_FORK_ENABLE
3433void 4828void
3434ev_fork_start (EV_P_ ev_fork *w) 4829ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3435{ 4830{
3436 if (expect_false (ev_is_active (w))) 4831 if (expect_false (ev_is_active (w)))
3437 return; 4832 return;
3438 4833
3439 EV_FREQUENT_CHECK; 4834 EV_FREQUENT_CHECK;
… …
3444 4839
3445 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3446} 4841}
3447 4842
3448void 4843void
3449ev_fork_stop (EV_P_ ev_fork *w) 4844ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3450{ 4845{
3451 clear_pending (EV_A_ (W)w); 4846 clear_pending (EV_A_ (W)w);
3452 if (expect_false (!ev_is_active (w))) 4847 if (expect_false (!ev_is_active (w)))
3453 return; 4848 return;
3454 4849
… …
3465 4860
3466 EV_FREQUENT_CHECK; 4861 EV_FREQUENT_CHECK;
3467} 4862}
3468#endif 4863#endif
3469 4864
3470#if EV_ASYNC_ENABLE 4865#if EV_CLEANUP_ENABLE
3471void 4866void
3472ev_async_start (EV_P_ ev_async *w) 4867ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3473{ 4868{
3474 if (expect_false (ev_is_active (w))) 4869 if (expect_false (ev_is_active (w)))
3475 return; 4870 return;
4871
4872 EV_FREQUENT_CHECK;
4873
4874 ev_start (EV_A_ (W)w, ++cleanupcnt);
4875 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4876 cleanups [cleanupcnt - 1] = w;
4877
4878 /* cleanup watchers should never keep a refcount on the loop */
4879 ev_unref (EV_A);
4880 EV_FREQUENT_CHECK;
4881}
4882
4883void
4884ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4885{
4886 clear_pending (EV_A_ (W)w);
4887 if (expect_false (!ev_is_active (w)))
4888 return;
4889
4890 EV_FREQUENT_CHECK;
4891 ev_ref (EV_A);
4892
4893 {
4894 int active = ev_active (w);
4895
4896 cleanups [active - 1] = cleanups [--cleanupcnt];
4897 ev_active (cleanups [active - 1]) = active;
4898 }
4899
4900 ev_stop (EV_A_ (W)w);
4901
4902 EV_FREQUENT_CHECK;
4903}
4904#endif
4905
4906#if EV_ASYNC_ENABLE
4907void
4908ev_async_start (EV_P_ ev_async *w) EV_THROW
4909{
4910 if (expect_false (ev_is_active (w)))
4911 return;
4912
4913 w->sent = 0;
3476 4914
3477 evpipe_init (EV_A); 4915 evpipe_init (EV_A);
3478 4916
3479 EV_FREQUENT_CHECK; 4917 EV_FREQUENT_CHECK;
3480 4918
… …
3484 4922
3485 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3486} 4924}
3487 4925
3488void 4926void
3489ev_async_stop (EV_P_ ev_async *w) 4927ev_async_stop (EV_P_ ev_async *w) EV_THROW
3490{ 4928{
3491 clear_pending (EV_A_ (W)w); 4929 clear_pending (EV_A_ (W)w);
3492 if (expect_false (!ev_is_active (w))) 4930 if (expect_false (!ev_is_active (w)))
3493 return; 4931 return;
3494 4932
… …
3505 4943
3506 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
3507} 4945}
3508 4946
3509void 4947void
3510ev_async_send (EV_P_ ev_async *w) 4948ev_async_send (EV_P_ ev_async *w) EV_THROW
3511{ 4949{
3512 w->sent = 1; 4950 w->sent = 1;
3513 evpipe_write (EV_A_ &async_pending); 4951 evpipe_write (EV_A_ &async_pending);
3514} 4952}
3515#endif 4953#endif
… …
3552 4990
3553 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4991 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3554} 4992}
3555 4993
3556void 4994void
3557ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4995ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3558{ 4996{
3559 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4997 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3560 4998
3561 if (expect_false (!once)) 4999 if (expect_false (!once))
3562 { 5000 {
3563 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 5001 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3564 return; 5002 return;
3565 } 5003 }
3566 5004
3567 once->cb = cb; 5005 once->cb = cb;
3568 once->arg = arg; 5006 once->arg = arg;
… …
3583} 5021}
3584 5022
3585/*****************************************************************************/ 5023/*****************************************************************************/
3586 5024
3587#if EV_WALK_ENABLE 5025#if EV_WALK_ENABLE
5026ecb_cold
3588void 5027void
3589ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5028ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3590{ 5029{
3591 int i, j; 5030 int i, j;
3592 ev_watcher_list *wl, *wn; 5031 ev_watcher_list *wl, *wn;
3593 5032
3594 if (types & (EV_IO | EV_EMBED)) 5033 if (types & (EV_IO | EV_EMBED))
… …
3637 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5076 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3638#endif 5077#endif
3639 5078
3640#if EV_IDLE_ENABLE 5079#if EV_IDLE_ENABLE
3641 if (types & EV_IDLE) 5080 if (types & EV_IDLE)
3642 for (j = NUMPRI; i--; ) 5081 for (j = NUMPRI; j--; )
3643 for (i = idlecnt [j]; i--; ) 5082 for (i = idlecnt [j]; i--; )
3644 cb (EV_A_ EV_IDLE, idles [j][i]); 5083 cb (EV_A_ EV_IDLE, idles [j][i]);
3645#endif 5084#endif
3646 5085
3647#if EV_FORK_ENABLE 5086#if EV_FORK_ENABLE
… …
3655 if (types & EV_ASYNC) 5094 if (types & EV_ASYNC)
3656 for (i = asynccnt; i--; ) 5095 for (i = asynccnt; i--; )
3657 cb (EV_A_ EV_ASYNC, asyncs [i]); 5096 cb (EV_A_ EV_ASYNC, asyncs [i]);
3658#endif 5097#endif
3659 5098
5099#if EV_PREPARE_ENABLE
3660 if (types & EV_PREPARE) 5100 if (types & EV_PREPARE)
3661 for (i = preparecnt; i--; ) 5101 for (i = preparecnt; i--; )
3662#if EV_EMBED_ENABLE 5102# if EV_EMBED_ENABLE
3663 if (ev_cb (prepares [i]) != embed_prepare_cb) 5103 if (ev_cb (prepares [i]) != embed_prepare_cb)
3664#endif 5104# endif
3665 cb (EV_A_ EV_PREPARE, prepares [i]); 5105 cb (EV_A_ EV_PREPARE, prepares [i]);
5106#endif
3666 5107
5108#if EV_CHECK_ENABLE
3667 if (types & EV_CHECK) 5109 if (types & EV_CHECK)
3668 for (i = checkcnt; i--; ) 5110 for (i = checkcnt; i--; )
3669 cb (EV_A_ EV_CHECK, checks [i]); 5111 cb (EV_A_ EV_CHECK, checks [i]);
5112#endif
3670 5113
5114#if EV_SIGNAL_ENABLE
3671 if (types & EV_SIGNAL) 5115 if (types & EV_SIGNAL)
3672 for (i = 0; i < EV_NSIG - 1; ++i) 5116 for (i = 0; i < EV_NSIG - 1; ++i)
3673 for (wl = signals [i].head; wl; ) 5117 for (wl = signals [i].head; wl; )
3674 { 5118 {
3675 wn = wl->next; 5119 wn = wl->next;
3676 cb (EV_A_ EV_SIGNAL, wl); 5120 cb (EV_A_ EV_SIGNAL, wl);
3677 wl = wn; 5121 wl = wn;
3678 } 5122 }
5123#endif
3679 5124
5125#if EV_CHILD_ENABLE
3680 if (types & EV_CHILD) 5126 if (types & EV_CHILD)
3681 for (i = EV_PID_HASHSIZE; i--; ) 5127 for (i = (EV_PID_HASHSIZE); i--; )
3682 for (wl = childs [i]; wl; ) 5128 for (wl = childs [i]; wl; )
3683 { 5129 {
3684 wn = wl->next; 5130 wn = wl->next;
3685 cb (EV_A_ EV_CHILD, wl); 5131 cb (EV_A_ EV_CHILD, wl);
3686 wl = wn; 5132 wl = wn;
3687 } 5133 }
5134#endif
3688/* EV_STAT 0x00001000 /* stat data changed */ 5135/* EV_STAT 0x00001000 /* stat data changed */
3689/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5136/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3690} 5137}
3691#endif 5138#endif
3692 5139
3693#if EV_MULTIPLICITY 5140#if EV_MULTIPLICITY
3694 #include "ev_wrap.h" 5141 #include "ev_wrap.h"
3695#endif 5142#endif
3696 5143
3697#ifdef __cplusplus
3698}
3699#endif
3700

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