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Comparing libev/ev.c (file contents):
Revision 1.337 by root, Wed Mar 10 09:18:24 2010 UTC vs.
Revision 1.484 by root, Tue Jul 31 05:40:58 2018 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 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> 167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
157#include <stdlib.h> 177#include <stdlib.h>
158#include <string.h> 178#include <string.h>
159#include <fcntl.h> 179#include <fcntl.h>
160#include <stddef.h> 180#include <stddef.h>
161 181
… …
173# include EV_H 193# include EV_H
174#else 194#else
175# include "ev.h" 195# include "ev.h"
176#endif 196#endif
177 197
198#if EV_NO_THREADS
199# undef EV_NO_SMP
200# define EV_NO_SMP 1
201# undef ECB_NO_THREADS
202# define ECB_NO_THREADS 1
203#endif
204#if EV_NO_SMP
205# undef EV_NO_SMP
206# define ECB_NO_SMP 1
207#endif
208
178#ifndef _WIN32 209#ifndef _WIN32
179# include <sys/time.h> 210# include <sys/time.h>
180# include <sys/wait.h> 211# include <sys/wait.h>
181# include <unistd.h> 212# include <unistd.h>
182#else 213#else
183# include <io.h> 214# include <io.h>
184# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
185# include <windows.h> 217# include <windows.h>
186# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
188# endif 220# endif
189# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
190#endif 222#endif
191 223
192/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
193 225
194/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 227#if defined EV_NSIG
196/* use what's provided */ 228/* use what's provided */
197#elif defined (NSIG) 229#elif defined NSIG
198# define EV_NSIG (NSIG) 230# define EV_NSIG (NSIG)
199#elif defined(_NSIG) 231#elif defined _NSIG
200# define EV_NSIG (_NSIG) 232# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX) 233#elif defined SIGMAX
202# define EV_NSIG (SIGMAX+1) 234# define EV_NSIG (SIGMAX+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 (_SIG_MAX) 237#elif defined _SIG_MAX
206# define EV_NSIG (_SIG_MAX+1) 238# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG) 239#elif defined MAXSIG
208# define EV_NSIG (MAXSIG+1) 240# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG) 241#elif defined MAX_SIG
210# define EV_NSIG (MAX_SIG+1) 242# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE) 243#elif defined SIGARRAYSIZE
212# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig) 245#elif defined _sys_nsig
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else 247#else
216# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
217/* to make it compile regardless, just remove the above line, */ 249#endif
218/* but consider reporting it, too! :) */ 250
219# define EV_NSIG 65 251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
220#endif 253#endif
221 254
222#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
224# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
225# else 258# else
226# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
227# endif 260# endif
228#endif 261#endif
229 262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
269# endif
270#endif
271
230#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
232# define EV_USE_MONOTONIC 1 274# define EV_USE_MONOTONIC EV_FEATURE_OS
233# else 275# else
234# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
235# endif 277# endif
236#endif 278#endif
237 279
… …
239# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 281# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
240#endif 282#endif
241 283
242#ifndef EV_USE_NANOSLEEP 284#ifndef EV_USE_NANOSLEEP
243# if _POSIX_C_SOURCE >= 199309L 285# if _POSIX_C_SOURCE >= 199309L
244# define EV_USE_NANOSLEEP 1 286# define EV_USE_NANOSLEEP EV_FEATURE_OS
245# else 287# else
246# define EV_USE_NANOSLEEP 0 288# define EV_USE_NANOSLEEP 0
247# endif 289# endif
248#endif 290#endif
249 291
250#ifndef EV_USE_SELECT 292#ifndef EV_USE_SELECT
251# define EV_USE_SELECT 1 293# define EV_USE_SELECT EV_FEATURE_BACKENDS
252#endif 294#endif
253 295
254#ifndef EV_USE_POLL 296#ifndef EV_USE_POLL
255# ifdef _WIN32 297# ifdef _WIN32
256# define EV_USE_POLL 0 298# define EV_USE_POLL 0
257# else 299# else
258# define EV_USE_POLL 1 300# define EV_USE_POLL EV_FEATURE_BACKENDS
259# endif 301# endif
260#endif 302#endif
261 303
262#ifndef EV_USE_EPOLL 304#ifndef EV_USE_EPOLL
263# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 305# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
264# define EV_USE_EPOLL 1 306# define EV_USE_EPOLL EV_FEATURE_BACKENDS
265# else 307# else
266# define EV_USE_EPOLL 0 308# define EV_USE_EPOLL 0
267# endif 309# endif
268#endif 310#endif
269 311
… …
275# define EV_USE_PORT 0 317# define EV_USE_PORT 0
276#endif 318#endif
277 319
278#ifndef EV_USE_INOTIFY 320#ifndef EV_USE_INOTIFY
279# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 321# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
280# define EV_USE_INOTIFY 1 322# define EV_USE_INOTIFY EV_FEATURE_OS
281# else 323# else
282# define EV_USE_INOTIFY 0 324# define EV_USE_INOTIFY 0
283# endif 325# endif
284#endif 326#endif
285 327
286#ifndef EV_PID_HASHSIZE 328#ifndef EV_PID_HASHSIZE
287# if EV_MINIMAL 329# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
288# define EV_PID_HASHSIZE 1
289# else
290# define EV_PID_HASHSIZE 16
291# endif
292#endif 330#endif
293 331
294#ifndef EV_INOTIFY_HASHSIZE 332#ifndef EV_INOTIFY_HASHSIZE
295# if EV_MINIMAL 333# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
296# define EV_INOTIFY_HASHSIZE 1
297# else
298# define EV_INOTIFY_HASHSIZE 16
299# endif
300#endif 334#endif
301 335
302#ifndef EV_USE_EVENTFD 336#ifndef EV_USE_EVENTFD
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
304# define EV_USE_EVENTFD 1 338# define EV_USE_EVENTFD EV_FEATURE_OS
305# else 339# else
306# define EV_USE_EVENTFD 0 340# define EV_USE_EVENTFD 0
307# endif 341# endif
308#endif 342#endif
309 343
310#ifndef EV_USE_SIGNALFD 344#ifndef EV_USE_SIGNALFD
311# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 345# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
312# define EV_USE_SIGNALFD 1 346# define EV_USE_SIGNALFD EV_FEATURE_OS
313# else 347# else
314# define EV_USE_SIGNALFD 0 348# define EV_USE_SIGNALFD 0
315# endif 349# endif
316#endif 350#endif
317 351
… …
320# define EV_USE_4HEAP 1 354# define EV_USE_4HEAP 1
321# define EV_HEAP_CACHE_AT 1 355# define EV_HEAP_CACHE_AT 1
322#endif 356#endif
323 357
324#ifndef EV_VERIFY 358#ifndef EV_VERIFY
325# define EV_VERIFY !EV_MINIMAL 359# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
326#endif 360#endif
327 361
328#ifndef EV_USE_4HEAP 362#ifndef EV_USE_4HEAP
329# define EV_USE_4HEAP !EV_MINIMAL 363# define EV_USE_4HEAP EV_FEATURE_DATA
330#endif 364#endif
331 365
332#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
333# define EV_HEAP_CACHE_AT !EV_MINIMAL 367# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
368#endif
369
370#ifdef __ANDROID__
371/* supposedly, android doesn't typedef fd_mask */
372# undef EV_USE_SELECT
373# define EV_USE_SELECT 0
374/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
375# undef EV_USE_CLOCK_SYSCALL
376# define EV_USE_CLOCK_SYSCALL 0
377#endif
378
379/* aix's poll.h seems to cause lots of trouble */
380#ifdef _AIX
381/* AIX has a completely broken poll.h header */
382# undef EV_USE_POLL
383# define EV_USE_POLL 0
334#endif 384#endif
335 385
336/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 386/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
337/* which makes programs even slower. might work on other unices, too. */ 387/* which makes programs even slower. might work on other unices, too. */
338#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
339# include <syscall.h> 389# include <sys/syscall.h>
340# ifdef SYS_clock_gettime 390# ifdef SYS_clock_gettime
341# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 391# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
342# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
343# define EV_USE_MONOTONIC 1 393# define EV_USE_MONOTONIC 1
344# else 394# else
… …
347# endif 397# endif
348#endif 398#endif
349 399
350/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 400/* this block fixes any misconfiguration where we know we run into trouble otherwise */
351 401
352#ifdef _AIX
353/* AIX has a completely broken poll.h header */
354# undef EV_USE_POLL
355# define EV_USE_POLL 0
356#endif
357
358#ifndef CLOCK_MONOTONIC 402#ifndef CLOCK_MONOTONIC
359# undef EV_USE_MONOTONIC 403# undef EV_USE_MONOTONIC
360# define EV_USE_MONOTONIC 0 404# define EV_USE_MONOTONIC 0
361#endif 405#endif
362 406
… …
369# undef EV_USE_INOTIFY 413# undef EV_USE_INOTIFY
370# define EV_USE_INOTIFY 0 414# define EV_USE_INOTIFY 0
371#endif 415#endif
372 416
373#if !EV_USE_NANOSLEEP 417#if !EV_USE_NANOSLEEP
374# ifndef _WIN32 418/* hp-ux has it in sys/time.h, which we unconditionally include above */
419# if !defined _WIN32 && !defined __hpux
375# include <sys/select.h> 420# include <sys/select.h>
376# endif 421# endif
377#endif 422#endif
378 423
379#if EV_USE_INOTIFY 424#if EV_USE_INOTIFY
380# include <sys/utsname.h>
381# include <sys/statfs.h> 425# include <sys/statfs.h>
382# include <sys/inotify.h> 426# include <sys/inotify.h>
383/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 427/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
384# ifndef IN_DONT_FOLLOW 428# ifndef IN_DONT_FOLLOW
385# undef EV_USE_INOTIFY 429# undef EV_USE_INOTIFY
386# define EV_USE_INOTIFY 0 430# define EV_USE_INOTIFY 0
387# endif 431# endif
388#endif
389
390#if EV_SELECT_IS_WINSOCKET
391# include <winsock.h>
392#endif 432#endif
393 433
394#if EV_USE_EVENTFD 434#if EV_USE_EVENTFD
395/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 435/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
396# include <stdint.h> 436# include <stdint.h>
… …
402# define EFD_CLOEXEC O_CLOEXEC 442# define EFD_CLOEXEC O_CLOEXEC
403# else 443# else
404# define EFD_CLOEXEC 02000000 444# define EFD_CLOEXEC 02000000
405# endif 445# endif
406# endif 446# endif
407# ifdef __cplusplus
408extern "C" {
409# endif
410int (eventfd) (unsigned int initval, int flags); 447EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
411# ifdef __cplusplus
412}
413# endif
414#endif 448#endif
415 449
416#if EV_USE_SIGNALFD 450#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 451/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h> 452# include <stdint.h>
… …
424# define SFD_CLOEXEC O_CLOEXEC 458# define SFD_CLOEXEC O_CLOEXEC
425# else 459# else
426# define SFD_CLOEXEC 02000000 460# define SFD_CLOEXEC 02000000
427# endif 461# endif
428# endif 462# endif
429# ifdef __cplusplus
430extern "C" {
431# endif
432int signalfd (int fd, const sigset_t *mask, int flags); 463EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
433 464
434struct signalfd_siginfo 465struct signalfd_siginfo
435{ 466{
436 uint32_t ssi_signo; 467 uint32_t ssi_signo;
437 char pad[128 - sizeof (uint32_t)]; 468 char pad[128 - sizeof (uint32_t)];
438}; 469};
439# ifdef __cplusplus
440}
441# endif 470#endif
442#endif
443
444 471
445/**/ 472/**/
446 473
447#if EV_VERIFY >= 3 474#if EV_VERIFY >= 3
448# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 475# define EV_FREQUENT_CHECK ev_verify (EV_A)
449#else 476#else
450# define EV_FREQUENT_CHECK do { } while (0) 477# define EV_FREQUENT_CHECK do { } while (0)
451#endif 478#endif
452 479
453/* 480/*
454 * This is used to avoid floating point rounding problems. 481 * This is used to work around floating point rounding problems.
455 * It is added to ev_rt_now when scheduling periodics
456 * to ensure progress, time-wise, even when rounding
457 * errors are against us.
458 * This value is good at least till the year 4000. 482 * This value is good at least till the year 4000.
459 * Better solutions welcome.
460 */ 483 */
461#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 484#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
485/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 486
463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 487#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 488#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 489
490#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
491#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
492
493/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
494/* ECB.H BEGIN */
495/*
496 * libecb - http://software.schmorp.de/pkg/libecb
497 *
498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
499 * Copyright (©) 2011 Emanuele Giaquinta
500 * All rights reserved.
501 *
502 * Redistribution and use in source and binary forms, with or without modifica-
503 * tion, are permitted provided that the following conditions are met:
504 *
505 * 1. Redistributions of source code must retain the above copyright notice,
506 * this list of conditions and the following disclaimer.
507 *
508 * 2. Redistributions in binary form must reproduce the above copyright
509 * notice, this list of conditions and the following disclaimer in the
510 * documentation and/or other materials provided with the distribution.
511 *
512 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
513 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
514 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
515 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
516 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
517 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
519 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
520 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
521 * OF THE POSSIBILITY OF SUCH DAMAGE.
522 *
523 * Alternatively, the contents of this file may be used under the terms of
524 * the GNU General Public License ("GPL") version 2 or any later version,
525 * in which case the provisions of the GPL are applicable instead of
526 * the above. If you wish to allow the use of your version of this file
527 * only under the terms of the GPL and not to allow others to use your
528 * version of this file under the BSD license, indicate your decision
529 * by deleting the provisions above and replace them with the notice
530 * and other provisions required by the GPL. If you do not delete the
531 * provisions above, a recipient may use your version of this file under
532 * either the BSD or the GPL.
533 */
534
535#ifndef ECB_H
536#define ECB_H
537
538/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005
540
541#ifdef _WIN32
542 typedef signed char int8_t;
543 typedef unsigned char uint8_t;
544 typedef signed short int16_t;
545 typedef unsigned short uint16_t;
546 typedef signed int int32_t;
547 typedef unsigned int uint32_t;
466#if __GNUC__ >= 4 548 #if __GNUC__
549 typedef signed long long int64_t;
550 typedef unsigned long long uint64_t;
551 #else /* _MSC_VER || __BORLANDC__ */
552 typedef signed __int64 int64_t;
553 typedef unsigned __int64 uint64_t;
554 #endif
555 #ifdef _WIN64
556 #define ECB_PTRSIZE 8
557 typedef uint64_t uintptr_t;
558 typedef int64_t intptr_t;
559 #else
560 #define ECB_PTRSIZE 4
561 typedef uint32_t uintptr_t;
562 typedef int32_t intptr_t;
563 #endif
564#else
565 #include <inttypes.h>
566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
567 #define ECB_PTRSIZE 8
568 #else
569 #define ECB_PTRSIZE 4
570 #endif
571#endif
572
573#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
574#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
575
576/* work around x32 idiocy by defining proper macros */
577#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
578 #if _ILP32
579 #define ECB_AMD64_X32 1
580 #else
581 #define ECB_AMD64 1
582 #endif
583#endif
584
585/* many compilers define _GNUC_ to some versions but then only implement
586 * what their idiot authors think are the "more important" extensions,
587 * causing enormous grief in return for some better fake benchmark numbers.
588 * or so.
589 * we try to detect these and simply assume they are not gcc - if they have
590 * an issue with that they should have done it right in the first place.
591 */
592#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
593 #define ECB_GCC_VERSION(major,minor) 0
594#else
595 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
596#endif
597
598#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
599
600#if __clang__ && defined __has_builtin
601 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
602#else
603 #define ECB_CLANG_BUILTIN(x) 0
604#endif
605
606#if __clang__ && defined __has_extension
607 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
608#else
609 #define ECB_CLANG_EXTENSION(x) 0
610#endif
611
612#define ECB_CPP (__cplusplus+0)
613#define ECB_CPP11 (__cplusplus >= 201103L)
614
615#if ECB_CPP
616 #define ECB_C 0
617 #define ECB_STDC_VERSION 0
618#else
619 #define ECB_C 1
620 #define ECB_STDC_VERSION __STDC_VERSION__
621#endif
622
623#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
624#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
625
626#if ECB_CPP
627 #define ECB_EXTERN_C extern "C"
628 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
629 #define ECB_EXTERN_C_END }
630#else
631 #define ECB_EXTERN_C extern
632 #define ECB_EXTERN_C_BEG
633 #define ECB_EXTERN_C_END
634#endif
635
636/*****************************************************************************/
637
638/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
639/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
640
641#if ECB_NO_THREADS
642 #define ECB_NO_SMP 1
643#endif
644
645#if ECB_NO_SMP
646 #define ECB_MEMORY_FENCE do { } while (0)
647#endif
648
649/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
650#if __xlC__ && ECB_CPP
651 #include <builtins.h>
652#endif
653
654#if 1400 <= _MSC_VER
655 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #if __i386 || __i386__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
664 #elif ECB_GCC_AMD64
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
670 #elif defined __ARM_ARCH_2__ \
671 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
672 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
673 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
674 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
675 || defined __ARM_ARCH_5TEJ__
676 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
677 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
678 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
679 || defined __ARM_ARCH_6T2__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
681 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
682 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
684 #elif __aarch64__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
686 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
688 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
689 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
690 #elif defined __s390__ || defined __s390x__
691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
692 #elif defined __mips__
693 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
694 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
696 #elif defined __alpha__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
698 #elif defined __hppa__
699 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
701 #elif defined __ia64__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
703 #elif defined __m68k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
705 #elif defined __m88k__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
707 #elif defined __sh__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
709 #endif
710 #endif
711#endif
712
713#ifndef ECB_MEMORY_FENCE
714 #if ECB_GCC_VERSION(4,7)
715 /* see comment below (stdatomic.h) about the C11 memory model. */
716 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
717 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
718 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
719
720 #elif ECB_CLANG_EXTENSION(c_atomic)
721 /* see comment below (stdatomic.h) about the C11 memory model. */
722 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
723 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
724 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
725
726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
727 #define ECB_MEMORY_FENCE __sync_synchronize ()
728 #elif _MSC_VER >= 1500 /* VC++ 2008 */
729 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
730 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
731 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
732 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
733 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
734 #elif _MSC_VER >= 1400 /* VC++ 2005 */
735 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
736 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
737 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
738 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
739 #elif defined _WIN32
740 #include <WinNT.h>
741 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
742 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
743 #include <mbarrier.h>
744 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
745 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
746 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
747 #elif __xlC__
748 #define ECB_MEMORY_FENCE __sync ()
749 #endif
750#endif
751
752#ifndef ECB_MEMORY_FENCE
753 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
754 /* we assume that these memory fences work on all variables/all memory accesses, */
755 /* not just C11 atomics and atomic accesses */
756 #include <stdatomic.h>
757 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
758 /* any fence other than seq_cst, which isn't very efficient for us. */
759 /* Why that is, we don't know - either the C11 memory model is quite useless */
760 /* for most usages, or gcc and clang have a bug */
761 /* I *currently* lean towards the latter, and inefficiently implement */
762 /* all three of ecb's fences as a seq_cst fence */
763 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
764 /* for all __atomic_thread_fence's except seq_cst */
765 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
766 #endif
767#endif
768
769#ifndef ECB_MEMORY_FENCE
770 #if !ECB_AVOID_PTHREADS
771 /*
772 * if you get undefined symbol references to pthread_mutex_lock,
773 * or failure to find pthread.h, then you should implement
774 * the ECB_MEMORY_FENCE operations for your cpu/compiler
775 * OR provide pthread.h and link against the posix thread library
776 * of your system.
777 */
778 #include <pthread.h>
779 #define ECB_NEEDS_PTHREADS 1
780 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
781
782 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
783 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
784 #endif
785#endif
786
787#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
788 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
789#endif
790
791#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
792 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
793#endif
794
795/*****************************************************************************/
796
797#if ECB_CPP
798 #define ecb_inline static inline
799#elif ECB_GCC_VERSION(2,5)
800 #define ecb_inline static __inline__
801#elif ECB_C99
802 #define ecb_inline static inline
803#else
804 #define ecb_inline static
805#endif
806
807#if ECB_GCC_VERSION(3,3)
808 #define ecb_restrict __restrict__
809#elif ECB_C99
810 #define ecb_restrict restrict
811#else
812 #define ecb_restrict
813#endif
814
815typedef int ecb_bool;
816
817#define ECB_CONCAT_(a, b) a ## b
818#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
819#define ECB_STRINGIFY_(a) # a
820#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
821#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
822
823#define ecb_function_ ecb_inline
824
825#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
826 #define ecb_attribute(attrlist) __attribute__ (attrlist)
827#else
828 #define ecb_attribute(attrlist)
829#endif
830
831#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
832 #define ecb_is_constant(expr) __builtin_constant_p (expr)
833#else
834 /* possible C11 impl for integral types
835 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
836 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
837
838 #define ecb_is_constant(expr) 0
839#endif
840
841#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
467# define expect(expr,value) __builtin_expect ((expr),(value)) 842 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
468# define noinline __attribute__ ((noinline))
469#else 843#else
470# define expect(expr,value) (expr) 844 #define ecb_expect(expr,value) (expr)
471# define noinline
472# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
473# define inline
474# endif 845#endif
475#endif
476 846
847#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
848 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
849#else
850 #define ecb_prefetch(addr,rw,locality)
851#endif
852
853/* no emulation for ecb_decltype */
854#if ECB_CPP11
855 // older implementations might have problems with decltype(x)::type, work around it
856 template<class T> struct ecb_decltype_t { typedef T type; };
857 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
858#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
859 #define ecb_decltype(x) __typeof__ (x)
860#endif
861
862#if _MSC_VER >= 1300
863 #define ecb_deprecated __declspec (deprecated)
864#else
865 #define ecb_deprecated ecb_attribute ((__deprecated__))
866#endif
867
868#if _MSC_VER >= 1500
869 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
870#elif ECB_GCC_VERSION(4,5)
871 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
872#else
873 #define ecb_deprecated_message(msg) ecb_deprecated
874#endif
875
876#if _MSC_VER >= 1400
877 #define ecb_noinline __declspec (noinline)
878#else
879 #define ecb_noinline ecb_attribute ((__noinline__))
880#endif
881
882#define ecb_unused ecb_attribute ((__unused__))
883#define ecb_const ecb_attribute ((__const__))
884#define ecb_pure ecb_attribute ((__pure__))
885
886#if ECB_C11 || __IBMC_NORETURN
887 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
888 #define ecb_noreturn _Noreturn
889#elif ECB_CPP11
890 #define ecb_noreturn [[noreturn]]
891#elif _MSC_VER >= 1200
892 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
893 #define ecb_noreturn __declspec (noreturn)
894#else
895 #define ecb_noreturn ecb_attribute ((__noreturn__))
896#endif
897
898#if ECB_GCC_VERSION(4,3)
899 #define ecb_artificial ecb_attribute ((__artificial__))
900 #define ecb_hot ecb_attribute ((__hot__))
901 #define ecb_cold ecb_attribute ((__cold__))
902#else
903 #define ecb_artificial
904 #define ecb_hot
905 #define ecb_cold
906#endif
907
908/* put around conditional expressions if you are very sure that the */
909/* expression is mostly true or mostly false. note that these return */
910/* booleans, not the expression. */
477#define expect_false(expr) expect ((expr) != 0, 0) 911#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
478#define expect_true(expr) expect ((expr) != 0, 1) 912#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
913/* for compatibility to the rest of the world */
914#define ecb_likely(expr) ecb_expect_true (expr)
915#define ecb_unlikely(expr) ecb_expect_false (expr)
916
917/* count trailing zero bits and count # of one bits */
918#if ECB_GCC_VERSION(3,4) \
919 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
920 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
921 && ECB_CLANG_BUILTIN(__builtin_popcount))
922 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
923 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
924 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
925 #define ecb_ctz32(x) __builtin_ctz (x)
926 #define ecb_ctz64(x) __builtin_ctzll (x)
927 #define ecb_popcount32(x) __builtin_popcount (x)
928 /* no popcountll */
929#else
930 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
931 ecb_function_ ecb_const int
932 ecb_ctz32 (uint32_t x)
933 {
934#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
935 unsigned long r;
936 _BitScanForward (&r, x);
937 return (int)r;
938#else
939 int r = 0;
940
941 x &= ~x + 1; /* this isolates the lowest bit */
942
943#if ECB_branchless_on_i386
944 r += !!(x & 0xaaaaaaaa) << 0;
945 r += !!(x & 0xcccccccc) << 1;
946 r += !!(x & 0xf0f0f0f0) << 2;
947 r += !!(x & 0xff00ff00) << 3;
948 r += !!(x & 0xffff0000) << 4;
949#else
950 if (x & 0xaaaaaaaa) r += 1;
951 if (x & 0xcccccccc) r += 2;
952 if (x & 0xf0f0f0f0) r += 4;
953 if (x & 0xff00ff00) r += 8;
954 if (x & 0xffff0000) r += 16;
955#endif
956
957 return r;
958#endif
959 }
960
961 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
962 ecb_function_ ecb_const int
963 ecb_ctz64 (uint64_t x)
964 {
965#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
966 unsigned long r;
967 _BitScanForward64 (&r, x);
968 return (int)r;
969#else
970 int shift = x & 0xffffffff ? 0 : 32;
971 return ecb_ctz32 (x >> shift) + shift;
972#endif
973 }
974
975 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
976 ecb_function_ ecb_const int
977 ecb_popcount32 (uint32_t x)
978 {
979 x -= (x >> 1) & 0x55555555;
980 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
981 x = ((x >> 4) + x) & 0x0f0f0f0f;
982 x *= 0x01010101;
983
984 return x >> 24;
985 }
986
987 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
988 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
989 {
990#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
991 unsigned long r;
992 _BitScanReverse (&r, x);
993 return (int)r;
994#else
995 int r = 0;
996
997 if (x >> 16) { x >>= 16; r += 16; }
998 if (x >> 8) { x >>= 8; r += 8; }
999 if (x >> 4) { x >>= 4; r += 4; }
1000 if (x >> 2) { x >>= 2; r += 2; }
1001 if (x >> 1) { r += 1; }
1002
1003 return r;
1004#endif
1005 }
1006
1007 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1008 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1009 {
1010#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1011 unsigned long r;
1012 _BitScanReverse64 (&r, x);
1013 return (int)r;
1014#else
1015 int r = 0;
1016
1017 if (x >> 32) { x >>= 32; r += 32; }
1018
1019 return r + ecb_ld32 (x);
1020#endif
1021 }
1022#endif
1023
1024ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1026ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1027ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1028
1029ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1030ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1031{
1032 return ( (x * 0x0802U & 0x22110U)
1033 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1034}
1035
1036ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1037ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1038{
1039 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1040 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1041 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1042 x = ( x >> 8 ) | ( x << 8);
1043
1044 return x;
1045}
1046
1047ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1048ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1049{
1050 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1051 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1052 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1053 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1054 x = ( x >> 16 ) | ( x << 16);
1055
1056 return x;
1057}
1058
1059/* popcount64 is only available on 64 bit cpus as gcc builtin */
1060/* so for this version we are lazy */
1061ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1062ecb_function_ ecb_const int
1063ecb_popcount64 (uint64_t x)
1064{
1065 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1066}
1067
1068ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1069ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1070ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1071ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1072ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1073ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1074ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1075ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1076
1077ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1078ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1079ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1080ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1081ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1082ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1083ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1084ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1085
1086#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1087 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1088 #define ecb_bswap16(x) __builtin_bswap16 (x)
1089 #else
1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1091 #endif
1092 #define ecb_bswap32(x) __builtin_bswap32 (x)
1093 #define ecb_bswap64(x) __builtin_bswap64 (x)
1094#elif _MSC_VER
1095 #include <stdlib.h>
1096 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1097 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1098 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1099#else
1100 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1101 ecb_function_ ecb_const uint16_t
1102 ecb_bswap16 (uint16_t x)
1103 {
1104 return ecb_rotl16 (x, 8);
1105 }
1106
1107 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1108 ecb_function_ ecb_const uint32_t
1109 ecb_bswap32 (uint32_t x)
1110 {
1111 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1112 }
1113
1114 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1115 ecb_function_ ecb_const uint64_t
1116 ecb_bswap64 (uint64_t x)
1117 {
1118 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1119 }
1120#endif
1121
1122#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1123 #define ecb_unreachable() __builtin_unreachable ()
1124#else
1125 /* this seems to work fine, but gcc always emits a warning for it :/ */
1126 ecb_inline ecb_noreturn void ecb_unreachable (void);
1127 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1128#endif
1129
1130/* try to tell the compiler that some condition is definitely true */
1131#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1132
1133ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1134ecb_inline ecb_const uint32_t
1135ecb_byteorder_helper (void)
1136{
1137 /* the union code still generates code under pressure in gcc, */
1138 /* but less than using pointers, and always seems to */
1139 /* successfully return a constant. */
1140 /* the reason why we have this horrible preprocessor mess */
1141 /* is to avoid it in all cases, at least on common architectures */
1142 /* or when using a recent enough gcc version (>= 4.6) */
1143#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1144 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1145 #define ECB_LITTLE_ENDIAN 1
1146 return 0x44332211;
1147#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1148 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1149 #define ECB_BIG_ENDIAN 1
1150 return 0x11223344;
1151#else
1152 union
1153 {
1154 uint8_t c[4];
1155 uint32_t u;
1156 } u = { 0x11, 0x22, 0x33, 0x44 };
1157 return u.u;
1158#endif
1159}
1160
1161ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1162ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1163ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1164ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1165
1166#if ECB_GCC_VERSION(3,0) || ECB_C99
1167 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1168#else
1169 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1170#endif
1171
1172#if ECB_CPP
1173 template<typename T>
1174 static inline T ecb_div_rd (T val, T div)
1175 {
1176 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1177 }
1178 template<typename T>
1179 static inline T ecb_div_ru (T val, T div)
1180 {
1181 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1182 }
1183#else
1184 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1185 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1186#endif
1187
1188#if ecb_cplusplus_does_not_suck
1189 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1190 template<typename T, int N>
1191 static inline int ecb_array_length (const T (&arr)[N])
1192 {
1193 return N;
1194 }
1195#else
1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1197#endif
1198
1199ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1200ecb_function_ ecb_const uint32_t
1201ecb_binary16_to_binary32 (uint32_t x)
1202{
1203 unsigned int s = (x & 0x8000) << (31 - 15);
1204 int e = (x >> 10) & 0x001f;
1205 unsigned int m = x & 0x03ff;
1206
1207 if (ecb_expect_false (e == 31))
1208 /* infinity or NaN */
1209 e = 255 - (127 - 15);
1210 else if (ecb_expect_false (!e))
1211 {
1212 if (ecb_expect_true (!m))
1213 /* zero, handled by code below by forcing e to 0 */
1214 e = 0 - (127 - 15);
1215 else
1216 {
1217 /* subnormal, renormalise */
1218 unsigned int s = 10 - ecb_ld32 (m);
1219
1220 m = (m << s) & 0x3ff; /* mask implicit bit */
1221 e -= s - 1;
1222 }
1223 }
1224
1225 /* e and m now are normalised, or zero, (or inf or nan) */
1226 e += 127 - 15;
1227
1228 return s | (e << 23) | (m << (23 - 10));
1229}
1230
1231ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1232ecb_function_ ecb_const uint16_t
1233ecb_binary32_to_binary16 (uint32_t x)
1234{
1235 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1236 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1237 unsigned int m = x & 0x007fffff;
1238
1239 x &= 0x7fffffff;
1240
1241 /* if it's within range of binary16 normals, use fast path */
1242 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1243 {
1244 /* mantissa round-to-even */
1245 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1246
1247 /* handle overflow */
1248 if (ecb_expect_false (m >= 0x00800000))
1249 {
1250 m >>= 1;
1251 e += 1;
1252 }
1253
1254 return s | (e << 10) | (m >> (23 - 10));
1255 }
1256
1257 /* handle large numbers and infinity */
1258 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1259 return s | 0x7c00;
1260
1261 /* handle zero, subnormals and small numbers */
1262 if (ecb_expect_true (x < 0x38800000))
1263 {
1264 /* zero */
1265 if (ecb_expect_true (!x))
1266 return s;
1267
1268 /* handle subnormals */
1269
1270 /* too small, will be zero */
1271 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1272 return s;
1273
1274 m |= 0x00800000; /* make implicit bit explicit */
1275
1276 /* very tricky - we need to round to the nearest e (+10) bit value */
1277 {
1278 unsigned int bits = 14 - e;
1279 unsigned int half = (1 << (bits - 1)) - 1;
1280 unsigned int even = (m >> bits) & 1;
1281
1282 /* if this overflows, we will end up with a normalised number */
1283 m = (m + half + even) >> bits;
1284 }
1285
1286 return s | m;
1287 }
1288
1289 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1290 m >>= 13;
1291
1292 return s | 0x7c00 | m | !m;
1293}
1294
1295/*******************************************************************************/
1296/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1297
1298/* basically, everything uses "ieee pure-endian" floating point numbers */
1299/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1300#if 0 \
1301 || __i386 || __i386__ \
1302 || ECB_GCC_AMD64 \
1303 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1304 || defined __s390__ || defined __s390x__ \
1305 || defined __mips__ \
1306 || defined __alpha__ \
1307 || defined __hppa__ \
1308 || defined __ia64__ \
1309 || defined __m68k__ \
1310 || defined __m88k__ \
1311 || defined __sh__ \
1312 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1313 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1314 || defined __aarch64__
1315 #define ECB_STDFP 1
1316 #include <string.h> /* for memcpy */
1317#else
1318 #define ECB_STDFP 0
1319#endif
1320
1321#ifndef ECB_NO_LIBM
1322
1323 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1324
1325 /* only the oldest of old doesn't have this one. solaris. */
1326 #ifdef INFINITY
1327 #define ECB_INFINITY INFINITY
1328 #else
1329 #define ECB_INFINITY HUGE_VAL
1330 #endif
1331
1332 #ifdef NAN
1333 #define ECB_NAN NAN
1334 #else
1335 #define ECB_NAN ECB_INFINITY
1336 #endif
1337
1338 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1339 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1340 #define ecb_frexpf(x,e) frexpf ((x), (e))
1341 #else
1342 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1343 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1344 #endif
1345
1346 /* convert a float to ieee single/binary32 */
1347 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1348 ecb_function_ ecb_const uint32_t
1349 ecb_float_to_binary32 (float x)
1350 {
1351 uint32_t r;
1352
1353 #if ECB_STDFP
1354 memcpy (&r, &x, 4);
1355 #else
1356 /* slow emulation, works for anything but -0 */
1357 uint32_t m;
1358 int e;
1359
1360 if (x == 0e0f ) return 0x00000000U;
1361 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1362 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1363 if (x != x ) return 0x7fbfffffU;
1364
1365 m = ecb_frexpf (x, &e) * 0x1000000U;
1366
1367 r = m & 0x80000000U;
1368
1369 if (r)
1370 m = -m;
1371
1372 if (e <= -126)
1373 {
1374 m &= 0xffffffU;
1375 m >>= (-125 - e);
1376 e = -126;
1377 }
1378
1379 r |= (e + 126) << 23;
1380 r |= m & 0x7fffffU;
1381 #endif
1382
1383 return r;
1384 }
1385
1386 /* converts an ieee single/binary32 to a float */
1387 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1388 ecb_function_ ecb_const float
1389 ecb_binary32_to_float (uint32_t x)
1390 {
1391 float r;
1392
1393 #if ECB_STDFP
1394 memcpy (&r, &x, 4);
1395 #else
1396 /* emulation, only works for normals and subnormals and +0 */
1397 int neg = x >> 31;
1398 int e = (x >> 23) & 0xffU;
1399
1400 x &= 0x7fffffU;
1401
1402 if (e)
1403 x |= 0x800000U;
1404 else
1405 e = 1;
1406
1407 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1408 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1409
1410 r = neg ? -r : r;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* convert a double to ieee double/binary64 */
1417 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1418 ecb_function_ ecb_const uint64_t
1419 ecb_double_to_binary64 (double x)
1420 {
1421 uint64_t r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 8);
1425 #else
1426 /* slow emulation, works for anything but -0 */
1427 uint64_t m;
1428 int e;
1429
1430 if (x == 0e0 ) return 0x0000000000000000U;
1431 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1432 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1433 if (x != x ) return 0X7ff7ffffffffffffU;
1434
1435 m = frexp (x, &e) * 0x20000000000000U;
1436
1437 r = m & 0x8000000000000000;;
1438
1439 if (r)
1440 m = -m;
1441
1442 if (e <= -1022)
1443 {
1444 m &= 0x1fffffffffffffU;
1445 m >>= (-1021 - e);
1446 e = -1022;
1447 }
1448
1449 r |= ((uint64_t)(e + 1022)) << 52;
1450 r |= m & 0xfffffffffffffU;
1451 #endif
1452
1453 return r;
1454 }
1455
1456 /* converts an ieee double/binary64 to a double */
1457 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1458 ecb_function_ ecb_const double
1459 ecb_binary64_to_double (uint64_t x)
1460 {
1461 double r;
1462
1463 #if ECB_STDFP
1464 memcpy (&r, &x, 8);
1465 #else
1466 /* emulation, only works for normals and subnormals and +0 */
1467 int neg = x >> 63;
1468 int e = (x >> 52) & 0x7ffU;
1469
1470 x &= 0xfffffffffffffU;
1471
1472 if (e)
1473 x |= 0x10000000000000U;
1474 else
1475 e = 1;
1476
1477 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1478 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1479
1480 r = neg ? -r : r;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* convert a float to ieee half/binary16 */
1487 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1488 ecb_function_ ecb_const uint16_t
1489 ecb_float_to_binary16 (float x)
1490 {
1491 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1492 }
1493
1494 /* convert an ieee half/binary16 to float */
1495 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1496 ecb_function_ ecb_const float
1497 ecb_binary16_to_float (uint16_t x)
1498 {
1499 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1500 }
1501
1502#endif
1503
1504#endif
1505
1506/* ECB.H END */
1507
1508#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1509/* if your architecture doesn't need memory fences, e.g. because it is
1510 * single-cpu/core, or if you use libev in a project that doesn't use libev
1511 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1512 * libev, in which cases the memory fences become nops.
1513 * alternatively, you can remove this #error and link against libpthread,
1514 * which will then provide the memory fences.
1515 */
1516# error "memory fences not defined for your architecture, please report"
1517#endif
1518
1519#ifndef ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE do { } while (0)
1521# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1522# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1523#endif
1524
1525#define expect_false(cond) ecb_expect_false (cond)
1526#define expect_true(cond) ecb_expect_true (cond)
1527#define noinline ecb_noinline
1528
479#define inline_size static inline 1529#define inline_size ecb_inline
480 1530
481#if EV_MINIMAL 1531#if EV_FEATURE_CODE
482# define inline_speed static noinline
483#else
484# define inline_speed static inline 1532# define inline_speed ecb_inline
1533#else
1534# define inline_speed noinline static
485#endif 1535#endif
486 1536
487#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
488 1538
489#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
502#define ev_active(w) ((W)(w))->active 1552#define ev_active(w) ((W)(w))->active
503#define ev_at(w) ((WT)(w))->at 1553#define ev_at(w) ((WT)(w))->at
504 1554
505#if EV_USE_REALTIME 1555#if EV_USE_REALTIME
506/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1556/* sig_atomic_t is used to avoid per-thread variables or locking but still */
507/* giving it a reasonably high chance of working on typical architetcures */ 1557/* giving it a reasonably high chance of working on typical architectures */
508static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1558static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
509#endif 1559#endif
510 1560
511#if EV_USE_MONOTONIC 1561#if EV_USE_MONOTONIC
512static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1562static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
526# include "ev_win32.c" 1576# include "ev_win32.c"
527#endif 1577#endif
528 1578
529/*****************************************************************************/ 1579/*****************************************************************************/
530 1580
1581/* define a suitable floor function (only used by periodics atm) */
1582
1583#if EV_USE_FLOOR
1584# include <math.h>
1585# define ev_floor(v) floor (v)
1586#else
1587
1588#include <float.h>
1589
1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
1592static ev_tstamp
1593ev_floor (ev_tstamp v)
1594{
1595 /* the choice of shift factor is not terribly important */
1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1598#else
1599 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1600#endif
1601
1602 /* argument too large for an unsigned long? */
1603 if (expect_false (v >= shift))
1604 {
1605 ev_tstamp f;
1606
1607 if (v == v - 1.)
1608 return v; /* very large number */
1609
1610 f = shift * ev_floor (v * (1. / shift));
1611 return f + ev_floor (v - f);
1612 }
1613
1614 /* special treatment for negative args? */
1615 if (expect_false (v < 0.))
1616 {
1617 ev_tstamp f = -ev_floor (-v);
1618
1619 return f - (f == v ? 0 : 1);
1620 }
1621
1622 /* fits into an unsigned long */
1623 return (unsigned long)v;
1624}
1625
1626#endif
1627
1628/*****************************************************************************/
1629
1630#ifdef __linux
1631# include <sys/utsname.h>
1632#endif
1633
1634noinline ecb_cold
1635static unsigned int
1636ev_linux_version (void)
1637{
1638#ifdef __linux
1639 unsigned int v = 0;
1640 struct utsname buf;
1641 int i;
1642 char *p = buf.release;
1643
1644 if (uname (&buf))
1645 return 0;
1646
1647 for (i = 3+1; --i; )
1648 {
1649 unsigned int c = 0;
1650
1651 for (;;)
1652 {
1653 if (*p >= '0' && *p <= '9')
1654 c = c * 10 + *p++ - '0';
1655 else
1656 {
1657 p += *p == '.';
1658 break;
1659 }
1660 }
1661
1662 v = (v << 8) | c;
1663 }
1664
1665 return v;
1666#else
1667 return 0;
1668#endif
1669}
1670
1671/*****************************************************************************/
1672
531#if EV_AVOID_STDIO 1673#if EV_AVOID_STDIO
532static void noinline 1674noinline ecb_cold
1675static void
533ev_printerr (const char *msg) 1676ev_printerr (const char *msg)
534{ 1677{
535 write (STDERR_FILENO, msg, strlen (msg)); 1678 write (STDERR_FILENO, msg, strlen (msg));
536} 1679}
537#endif 1680#endif
538 1681
539static void (*syserr_cb)(const char *msg); 1682static void (*syserr_cb)(const char *msg) EV_THROW;
540 1683
1684ecb_cold
541void 1685void
542ev_set_syserr_cb (void (*cb)(const char *msg)) 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
543{ 1687{
544 syserr_cb = cb; 1688 syserr_cb = cb;
545} 1689}
546 1690
547static void noinline 1691noinline ecb_cold
1692static void
548ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
549{ 1694{
550 if (!msg) 1695 if (!msg)
551 msg = "(libev) system error"; 1696 msg = "(libev) system error";
552 1697
553 if (syserr_cb) 1698 if (syserr_cb)
554 syserr_cb (msg); 1699 syserr_cb (msg);
555 else 1700 else
556 { 1701 {
557#if EV_AVOID_STDIO 1702#if EV_AVOID_STDIO
558 const char *err = strerror (errno);
559
560 ev_printerr (msg); 1703 ev_printerr (msg);
561 ev_printerr (": "); 1704 ev_printerr (": ");
562 ev_printerr (err); 1705 ev_printerr (strerror (errno));
563 ev_printerr ("\n"); 1706 ev_printerr ("\n");
564#else 1707#else
565 perror (msg); 1708 perror (msg);
566#endif 1709#endif
567 abort (); 1710 abort ();
568 } 1711 }
569} 1712}
570 1713
571static void * 1714static void *
572ev_realloc_emul (void *ptr, long size) 1715ev_realloc_emul (void *ptr, long size) EV_THROW
573{ 1716{
574#if __GLIBC__
575 return realloc (ptr, size);
576#else
577 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
578 * implement realloc (x, 0) (as required by both ansi c-89 and 1718 * implement realloc (x, 0) (as required by both ansi c-89 and
579 * the single unix specification, so work around them here. 1719 * the single unix specification, so work around them here.
1720 * recently, also (at least) fedora and debian started breaking it,
1721 * despite documenting it otherwise.
580 */ 1722 */
581 1723
582 if (size) 1724 if (size)
583 return realloc (ptr, size); 1725 return realloc (ptr, size);
584 1726
585 free (ptr); 1727 free (ptr);
586 return 0; 1728 return 0;
587#endif
588} 1729}
589 1730
590static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
591 1732
1733ecb_cold
592void 1734void
593ev_set_allocator (void *(*cb)(void *ptr, long size)) 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
594{ 1736{
595 alloc = cb; 1737 alloc = cb;
596} 1738}
597 1739
598inline_speed void * 1740inline_speed void *
… …
601 ptr = alloc (ptr, size); 1743 ptr = alloc (ptr, size);
602 1744
603 if (!ptr && size) 1745 if (!ptr && size)
604 { 1746 {
605#if EV_AVOID_STDIO 1747#if EV_AVOID_STDIO
606 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1748 ev_printerr ("(libev) memory allocation failed, aborting.\n");
607#else 1749#else
608 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1750 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
609#endif 1751#endif
610 abort (); 1752 abort ();
611 } 1753 }
612 1754
613 return ptr; 1755 return ptr;
… …
630 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1772 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
631 unsigned char unused; 1773 unsigned char unused;
632#if EV_USE_EPOLL 1774#if EV_USE_EPOLL
633 unsigned int egen; /* generation counter to counter epoll bugs */ 1775 unsigned int egen; /* generation counter to counter epoll bugs */
634#endif 1776#endif
635#if EV_SELECT_IS_WINSOCKET 1777#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
636 SOCKET handle; 1778 SOCKET handle;
1779#endif
1780#if EV_USE_IOCP
1781 OVERLAPPED or, ow;
637#endif 1782#endif
638} ANFD; 1783} ANFD;
639 1784
640/* stores the pending event set for a given watcher */ 1785/* stores the pending event set for a given watcher */
641typedef struct 1786typedef struct
… …
683 #undef VAR 1828 #undef VAR
684 }; 1829 };
685 #include "ev_wrap.h" 1830 #include "ev_wrap.h"
686 1831
687 static struct ev_loop default_loop_struct; 1832 static struct ev_loop default_loop_struct;
688 struct ev_loop *ev_default_loop_ptr; 1833 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
689 1834
690#else 1835#else
691 1836
692 ev_tstamp ev_rt_now; 1837 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
693 #define VAR(name,decl) static decl; 1838 #define VAR(name,decl) static decl;
694 #include "ev_vars.h" 1839 #include "ev_vars.h"
695 #undef VAR 1840 #undef VAR
696 1841
697 static int ev_default_loop_ptr; 1842 static int ev_default_loop_ptr;
698 1843
699#endif 1844#endif
700 1845
701#if EV_MINIMAL < 2 1846#if EV_FEATURE_API
702# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1847# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
703# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1848# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
704# define EV_INVOKE_PENDING invoke_cb (EV_A) 1849# define EV_INVOKE_PENDING invoke_cb (EV_A)
705#else 1850#else
706# define EV_RELEASE_CB (void)0 1851# define EV_RELEASE_CB (void)0
707# define EV_ACQUIRE_CB (void)0 1852# define EV_ACQUIRE_CB (void)0
708# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1853# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
709#endif 1854#endif
710 1855
711#define EVUNLOOP_RECURSE 0x80 1856#define EVBREAK_RECURSE 0x80
712 1857
713/*****************************************************************************/ 1858/*****************************************************************************/
714 1859
715#ifndef EV_HAVE_EV_TIME 1860#ifndef EV_HAVE_EV_TIME
716ev_tstamp 1861ev_tstamp
717ev_time (void) 1862ev_time (void) EV_THROW
718{ 1863{
719#if EV_USE_REALTIME 1864#if EV_USE_REALTIME
720 if (expect_true (have_realtime)) 1865 if (expect_true (have_realtime))
721 { 1866 {
722 struct timespec ts; 1867 struct timespec ts;
… …
746 return ev_time (); 1891 return ev_time ();
747} 1892}
748 1893
749#if EV_MULTIPLICITY 1894#if EV_MULTIPLICITY
750ev_tstamp 1895ev_tstamp
751ev_now (EV_P) 1896ev_now (EV_P) EV_THROW
752{ 1897{
753 return ev_rt_now; 1898 return ev_rt_now;
754} 1899}
755#endif 1900#endif
756 1901
757void 1902void
758ev_sleep (ev_tstamp delay) 1903ev_sleep (ev_tstamp delay) EV_THROW
759{ 1904{
760 if (delay > 0.) 1905 if (delay > 0.)
761 { 1906 {
762#if EV_USE_NANOSLEEP 1907#if EV_USE_NANOSLEEP
763 struct timespec ts; 1908 struct timespec ts;
764 1909
765 ts.tv_sec = (time_t)delay; 1910 EV_TS_SET (ts, delay);
766 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
767
768 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
769#elif defined(_WIN32) 1912#elif defined _WIN32
1913 /* maybe this should round up, as ms is very low resolution */
1914 /* compared to select (µs) or nanosleep (ns) */
770 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
771#else 1916#else
772 struct timeval tv; 1917 struct timeval tv;
773
774 tv.tv_sec = (time_t)delay;
775 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
776 1918
777 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1919 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
778 /* something not guaranteed by newer posix versions, but guaranteed */ 1920 /* something not guaranteed by newer posix versions, but guaranteed */
779 /* by older ones */ 1921 /* by older ones */
1922 EV_TV_SET (tv, delay);
780 select (0, 0, 0, 0, &tv); 1923 select (0, 0, 0, 0, &tv);
781#endif 1924#endif
782 } 1925 }
783} 1926}
784 1927
785/*****************************************************************************/ 1928/*****************************************************************************/
786 1929
787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1930#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
788 1931
789/* find a suitable new size for the given array, */ 1932/* find a suitable new size for the given array, */
790/* hopefully by rounding to a ncie-to-malloc size */ 1933/* hopefully by rounding to a nice-to-malloc size */
791inline_size int 1934inline_size int
792array_nextsize (int elem, int cur, int cnt) 1935array_nextsize (int elem, int cur, int cnt)
793{ 1936{
794 int ncur = cur + 1; 1937 int ncur = cur + 1;
795 1938
796 do 1939 do
797 ncur <<= 1; 1940 ncur <<= 1;
798 while (cnt > ncur); 1941 while (cnt > ncur);
799 1942
800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1943 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1944 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
802 { 1945 {
803 ncur *= elem; 1946 ncur *= elem;
804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1947 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
805 ncur = ncur - sizeof (void *) * 4; 1948 ncur = ncur - sizeof (void *) * 4;
… …
807 } 1950 }
808 1951
809 return ncur; 1952 return ncur;
810} 1953}
811 1954
812static noinline void * 1955noinline ecb_cold
1956static void *
813array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
814{ 1958{
815 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
816 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
817} 1961}
… …
820 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
821 1965
822#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
823 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
824 { \ 1968 { \
825 int ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
826 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
827 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
828 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
829 } 1973 }
830 1974
… …
842 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
843 1987
844/*****************************************************************************/ 1988/*****************************************************************************/
845 1989
846/* dummy callback for pending events */ 1990/* dummy callback for pending events */
847static void noinline 1991noinline
1992static void
848pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
849{ 1994{
850} 1995}
851 1996
852void noinline 1997noinline
1998void
853ev_feed_event (EV_P_ void *w, int revents) 1999ev_feed_event (EV_P_ void *w, int revents) EV_THROW
854{ 2000{
855 W w_ = (W)w; 2001 W w_ = (W)w;
856 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
857 2003
858 if (expect_false (w_->pending)) 2004 if (expect_false (w_->pending))
… …
862 w_->pending = ++pendingcnt [pri]; 2008 w_->pending = ++pendingcnt [pri];
863 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2009 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
864 pendings [pri][w_->pending - 1].w = w_; 2010 pendings [pri][w_->pending - 1].w = w_;
865 pendings [pri][w_->pending - 1].events = revents; 2011 pendings [pri][w_->pending - 1].events = revents;
866 } 2012 }
2013
2014 pendingpri = NUMPRI - 1;
867} 2015}
868 2016
869inline_speed void 2017inline_speed void
870feed_reverse (EV_P_ W w) 2018feed_reverse (EV_P_ W w)
871{ 2019{
… …
917 if (expect_true (!anfd->reify)) 2065 if (expect_true (!anfd->reify))
918 fd_event_nocheck (EV_A_ fd, revents); 2066 fd_event_nocheck (EV_A_ fd, revents);
919} 2067}
920 2068
921void 2069void
922ev_feed_fd_event (EV_P_ int fd, int revents) 2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
923{ 2071{
924 if (fd >= 0 && fd < anfdmax) 2072 if (fd >= 0 && fd < anfdmax)
925 fd_event_nocheck (EV_A_ fd, revents); 2073 fd_event_nocheck (EV_A_ fd, revents);
926} 2074}
927 2075
… …
930inline_size void 2078inline_size void
931fd_reify (EV_P) 2079fd_reify (EV_P)
932{ 2080{
933 int i; 2081 int i;
934 2082
2083#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2084 for (i = 0; i < fdchangecnt; ++i)
2085 {
2086 int fd = fdchanges [i];
2087 ANFD *anfd = anfds + fd;
2088
2089 if (anfd->reify & EV__IOFDSET && anfd->head)
2090 {
2091 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2092
2093 if (handle != anfd->handle)
2094 {
2095 unsigned long arg;
2096
2097 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2098
2099 /* handle changed, but fd didn't - we need to do it in two steps */
2100 backend_modify (EV_A_ fd, anfd->events, 0);
2101 anfd->events = 0;
2102 anfd->handle = handle;
2103 }
2104 }
2105 }
2106#endif
2107
935 for (i = 0; i < fdchangecnt; ++i) 2108 for (i = 0; i < fdchangecnt; ++i)
936 { 2109 {
937 int fd = fdchanges [i]; 2110 int fd = fdchanges [i];
938 ANFD *anfd = anfds + fd; 2111 ANFD *anfd = anfds + fd;
939 ev_io *w; 2112 ev_io *w;
940 2113
941 unsigned char events = 0; 2114 unsigned char o_events = anfd->events;
2115 unsigned char o_reify = anfd->reify;
942 2116
943 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2117 anfd->reify = 0;
944 events |= (unsigned char)w->events;
945 2118
946#if EV_SELECT_IS_WINSOCKET 2119 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
947 if (events)
948 { 2120 {
949 unsigned long arg; 2121 anfd->events = 0;
950 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2122
951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2123 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2124 anfd->events |= (unsigned char)w->events;
2125
2126 if (o_events != anfd->events)
2127 o_reify = EV__IOFDSET; /* actually |= */
952 } 2128 }
953#endif
954 2129
955 { 2130 if (o_reify & EV__IOFDSET)
956 unsigned char o_events = anfd->events;
957 unsigned char o_reify = anfd->reify;
958
959 anfd->reify = 0;
960 anfd->events = events;
961
962 if (o_events != events || o_reify & EV__IOFDSET)
963 backend_modify (EV_A_ fd, o_events, events); 2131 backend_modify (EV_A_ fd, o_events, anfd->events);
964 }
965 } 2132 }
966 2133
967 fdchangecnt = 0; 2134 fdchangecnt = 0;
968} 2135}
969 2136
970/* something about the given fd changed */ 2137/* something about the given fd changed */
971inline_size void 2138inline_size
2139void
972fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
973{ 2141{
974 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
975 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
976 2144
… …
981 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
982 } 2150 }
983} 2151}
984 2152
985/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2153/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
986inline_speed void 2154inline_speed ecb_cold void
987fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
988{ 2156{
989 ev_io *w; 2157 ev_io *w;
990 2158
991 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
994 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2162 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
995 } 2163 }
996} 2164}
997 2165
998/* check whether the given fd is actually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
999inline_size int 2167inline_size ecb_cold int
1000fd_valid (int fd) 2168fd_valid (int fd)
1001{ 2169{
1002#ifdef _WIN32 2170#ifdef _WIN32
1003 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1004#else 2172#else
1005 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
1006#endif 2174#endif
1007} 2175}
1008 2176
1009/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
1010static void noinline 2178noinline ecb_cold
2179static void
1011fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
1012{ 2181{
1013 int fd; 2182 int fd;
1014 2183
1015 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
1017 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
1018 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
1019} 2188}
1020 2189
1021/* called on ENOMEM in select/poll to kill some fds and retry */ 2190/* called on ENOMEM in select/poll to kill some fds and retry */
1022static void noinline 2191noinline ecb_cold
2192static void
1023fd_enomem (EV_P) 2193fd_enomem (EV_P)
1024{ 2194{
1025 int fd; 2195 int fd;
1026 2196
1027 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
… …
1031 break; 2201 break;
1032 } 2202 }
1033} 2203}
1034 2204
1035/* usually called after fork if backend needs to re-arm all fds from scratch */ 2205/* usually called after fork if backend needs to re-arm all fds from scratch */
1036static void noinline 2206noinline
2207static void
1037fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
1038{ 2209{
1039 int fd; 2210 int fd;
1040 2211
1041 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
1062} 2233}
1063 2234
1064/*****************************************************************************/ 2235/*****************************************************************************/
1065 2236
1066/* 2237/*
1067 * the heap functions want a real array index. array index 0 uis guaranteed to not 2238 * the heap functions want a real array index. array index 0 is guaranteed to not
1068 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2239 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1069 * the branching factor of the d-tree. 2240 * the branching factor of the d-tree.
1070 */ 2241 */
1071 2242
1072/* 2243/*
… …
1222 2393
1223/*****************************************************************************/ 2394/*****************************************************************************/
1224 2395
1225#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1226 2397
1227static void noinline 2398noinline ecb_cold
2399static void
1228evpipe_init (EV_P) 2400evpipe_init (EV_P)
1229{ 2401{
1230 if (!ev_is_active (&pipe_w)) 2402 if (!ev_is_active (&pipe_w))
1231 { 2403 {
2404 int fds [2];
2405
1232# if EV_USE_EVENTFD 2406# if EV_USE_EVENTFD
2407 fds [0] = -1;
1233 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2408 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1234 if (evfd < 0 && errno == EINVAL) 2409 if (fds [1] < 0 && errno == EINVAL)
1235 evfd = eventfd (0, 0); 2410 fds [1] = eventfd (0, 0);
1236 2411
1237 if (evfd >= 0) 2412 if (fds [1] < 0)
2413# endif
1238 { 2414 {
2415 while (pipe (fds))
2416 ev_syserr ("(libev) error creating signal/async pipe");
2417
2418 fd_intern (fds [0]);
2419 }
2420
1239 evpipe [0] = -1; 2421 evpipe [0] = fds [0];
1240 fd_intern (evfd); /* doing it twice doesn't hurt */ 2422
1241 ev_io_set (&pipe_w, evfd, EV_READ); 2423 if (evpipe [1] < 0)
2424 evpipe [1] = fds [1]; /* first call, set write fd */
2425 else
2426 {
2427 /* on subsequent calls, do not change evpipe [1] */
2428 /* so that evpipe_write can always rely on its value. */
2429 /* this branch does not do anything sensible on windows, */
2430 /* so must not be executed on windows */
2431
2432 dup2 (fds [1], evpipe [1]);
2433 close (fds [1]);
2434 }
2435
2436 fd_intern (evpipe [1]);
2437
2438 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2439 ev_io_start (EV_A_ &pipe_w);
2440 ev_unref (EV_A); /* watcher should not keep loop alive */
2441 }
2442}
2443
2444inline_speed void
2445evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2446{
2447 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2448
2449 if (expect_true (*flag))
2450 return;
2451
2452 *flag = 1;
2453 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2454
2455 pipe_write_skipped = 1;
2456
2457 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2458
2459 if (pipe_write_wanted)
2460 {
2461 int old_errno;
2462
2463 pipe_write_skipped = 0;
2464 ECB_MEMORY_FENCE_RELEASE;
2465
2466 old_errno = errno; /* save errno because write will clobber it */
2467
2468#if EV_USE_EVENTFD
2469 if (evpipe [0] < 0)
2470 {
2471 uint64_t counter = 1;
2472 write (evpipe [1], &counter, sizeof (uint64_t));
1242 } 2473 }
1243 else 2474 else
1244# endif 2475#endif
1245 { 2476 {
1246 while (pipe (evpipe)) 2477#ifdef _WIN32
1247 ev_syserr ("(libev) error creating signal/async pipe"); 2478 WSABUF buf;
1248 2479 DWORD sent;
1249 fd_intern (evpipe [0]); 2480 buf.buf = &buf;
1250 fd_intern (evpipe [1]); 2481 buf.len = 1;
1251 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2482 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2483#else
2484 write (evpipe [1], &(evpipe [1]), 1);
2485#endif
1252 } 2486 }
1253
1254 ev_io_start (EV_A_ &pipe_w);
1255 ev_unref (EV_A); /* watcher should not keep loop alive */
1256 }
1257}
1258
1259inline_size void
1260evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1261{
1262 if (!*flag)
1263 {
1264 int old_errno = errno; /* save errno because write might clobber it */
1265 char dummy;
1266
1267 *flag = 1;
1268
1269#if EV_USE_EVENTFD
1270 if (evfd >= 0)
1271 {
1272 uint64_t counter = 1;
1273 write (evfd, &counter, sizeof (uint64_t));
1274 }
1275 else
1276#endif
1277 write (evpipe [1], &dummy, 1);
1278 2487
1279 errno = old_errno; 2488 errno = old_errno;
1280 } 2489 }
1281} 2490}
1282 2491
… …
1285static void 2494static void
1286pipecb (EV_P_ ev_io *iow, int revents) 2495pipecb (EV_P_ ev_io *iow, int revents)
1287{ 2496{
1288 int i; 2497 int i;
1289 2498
2499 if (revents & EV_READ)
2500 {
1290#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1291 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1292 { 2503 {
1293 uint64_t counter; 2504 uint64_t counter;
1294 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1295 } 2506 }
1296 else 2507 else
1297#endif 2508#endif
1298 { 2509 {
1299 char dummy; 2510 char dummy[4];
2511#ifdef _WIN32
2512 WSABUF buf;
2513 DWORD recvd;
2514 DWORD flags = 0;
2515 buf.buf = dummy;
2516 buf.len = sizeof (dummy);
2517 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2518#else
1300 read (evpipe [0], &dummy, 1); 2519 read (evpipe [0], &dummy, sizeof (dummy));
2520#endif
2521 }
1301 } 2522 }
1302 2523
2524 pipe_write_skipped = 0;
2525
2526 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2527
2528#if EV_SIGNAL_ENABLE
1303 if (sig_pending) 2529 if (sig_pending)
1304 { 2530 {
1305 sig_pending = 0; 2531 sig_pending = 0;
2532
2533 ECB_MEMORY_FENCE;
1306 2534
1307 for (i = EV_NSIG - 1; i--; ) 2535 for (i = EV_NSIG - 1; i--; )
1308 if (expect_false (signals [i].pending)) 2536 if (expect_false (signals [i].pending))
1309 ev_feed_signal_event (EV_A_ i + 1); 2537 ev_feed_signal_event (EV_A_ i + 1);
1310 } 2538 }
2539#endif
1311 2540
1312#if EV_ASYNC_ENABLE 2541#if EV_ASYNC_ENABLE
1313 if (async_pending) 2542 if (async_pending)
1314 { 2543 {
1315 async_pending = 0; 2544 async_pending = 0;
2545
2546 ECB_MEMORY_FENCE;
1316 2547
1317 for (i = asynccnt; i--; ) 2548 for (i = asynccnt; i--; )
1318 if (asyncs [i]->sent) 2549 if (asyncs [i]->sent)
1319 { 2550 {
1320 asyncs [i]->sent = 0; 2551 asyncs [i]->sent = 0;
2552 ECB_MEMORY_FENCE_RELEASE;
1321 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2553 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1322 } 2554 }
1323 } 2555 }
1324#endif 2556#endif
1325} 2557}
1326 2558
1327/*****************************************************************************/ 2559/*****************************************************************************/
1328 2560
2561void
2562ev_feed_signal (int signum) EV_THROW
2563{
2564#if EV_MULTIPLICITY
2565 EV_P;
2566 ECB_MEMORY_FENCE_ACQUIRE;
2567 EV_A = signals [signum - 1].loop;
2568
2569 if (!EV_A)
2570 return;
2571#endif
2572
2573 signals [signum - 1].pending = 1;
2574 evpipe_write (EV_A_ &sig_pending);
2575}
2576
1329static void 2577static void
1330ev_sighandler (int signum) 2578ev_sighandler (int signum)
1331{ 2579{
1332#if EV_MULTIPLICITY
1333 EV_P = signals [signum - 1].loop;
1334#endif
1335
1336#ifdef _WIN32 2580#ifdef _WIN32
1337 signal (signum, ev_sighandler); 2581 signal (signum, ev_sighandler);
1338#endif 2582#endif
1339 2583
1340 signals [signum - 1].pending = 1; 2584 ev_feed_signal (signum);
1341 evpipe_write (EV_A_ &sig_pending);
1342} 2585}
1343 2586
1344void noinline 2587noinline
2588void
1345ev_feed_signal_event (EV_P_ int signum) 2589ev_feed_signal_event (EV_P_ int signum) EV_THROW
1346{ 2590{
1347 WL w; 2591 WL w;
1348 2592
1349 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1350 return; 2594 return;
1351 2595
1352 --signum; 2596 --signum;
1353 2597
1354#if EV_MULTIPLICITY 2598#if EV_MULTIPLICITY
… …
1358 if (expect_false (signals [signum].loop != EV_A)) 2602 if (expect_false (signals [signum].loop != EV_A))
1359 return; 2603 return;
1360#endif 2604#endif
1361 2605
1362 signals [signum].pending = 0; 2606 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE;
1363 2608
1364 for (w = signals [signum].head; w; w = w->next) 2609 for (w = signals [signum].head; w; w = w->next)
1365 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1366} 2611}
1367 2612
… …
1403child_reap (EV_P_ int chain, int pid, int status) 2648child_reap (EV_P_ int chain, int pid, int status)
1404{ 2649{
1405 ev_child *w; 2650 ev_child *w;
1406 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2651 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1407 2652
1408 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2653 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1409 { 2654 {
1410 if ((w->pid == pid || !w->pid) 2655 if ((w->pid == pid || !w->pid)
1411 && (!traced || (w->flags & 1))) 2656 && (!traced || (w->flags & 1)))
1412 { 2657 {
1413 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2658 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1438 /* make sure we are called again until all children have been reaped */ 2683 /* make sure we are called again until all children have been reaped */
1439 /* we need to do it this way so that the callback gets called before we continue */ 2684 /* we need to do it this way so that the callback gets called before we continue */
1440 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2685 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1441 2686
1442 child_reap (EV_A_ pid, pid, status); 2687 child_reap (EV_A_ pid, pid, status);
1443 if (EV_PID_HASHSIZE > 1) 2688 if ((EV_PID_HASHSIZE) > 1)
1444 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2689 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1445} 2690}
1446 2691
1447#endif 2692#endif
1448 2693
1449/*****************************************************************************/ 2694/*****************************************************************************/
1450 2695
2696#if EV_USE_IOCP
2697# include "ev_iocp.c"
2698#endif
1451#if EV_USE_PORT 2699#if EV_USE_PORT
1452# include "ev_port.c" 2700# include "ev_port.c"
1453#endif 2701#endif
1454#if EV_USE_KQUEUE 2702#if EV_USE_KQUEUE
1455# include "ev_kqueue.c" 2703# include "ev_kqueue.c"
… …
1462#endif 2710#endif
1463#if EV_USE_SELECT 2711#if EV_USE_SELECT
1464# include "ev_select.c" 2712# include "ev_select.c"
1465#endif 2713#endif
1466 2714
1467int 2715ecb_cold int
1468ev_version_major (void) 2716ev_version_major (void) EV_THROW
1469{ 2717{
1470 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
1471} 2719}
1472 2720
1473int 2721ecb_cold int
1474ev_version_minor (void) 2722ev_version_minor (void) EV_THROW
1475{ 2723{
1476 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
1477} 2725}
1478 2726
1479/* return true if we are running with elevated privileges and should ignore env variables */ 2727/* return true if we are running with elevated privileges and should ignore env variables */
1480int inline_size 2728inline_size ecb_cold int
1481enable_secure (void) 2729enable_secure (void)
1482{ 2730{
1483#ifdef _WIN32 2731#ifdef _WIN32
1484 return 0; 2732 return 0;
1485#else 2733#else
1486 return getuid () != geteuid () 2734 return getuid () != geteuid ()
1487 || getgid () != getegid (); 2735 || getgid () != getegid ();
1488#endif 2736#endif
1489} 2737}
1490 2738
2739ecb_cold
1491unsigned int 2740unsigned int
1492ev_supported_backends (void) 2741ev_supported_backends (void) EV_THROW
1493{ 2742{
1494 unsigned int flags = 0; 2743 unsigned int flags = 0;
1495 2744
1496 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1497 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1500 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1501 2750
1502 return flags; 2751 return flags;
1503} 2752}
1504 2753
2754ecb_cold
1505unsigned int 2755unsigned int
1506ev_recommended_backends (void) 2756ev_recommended_backends (void) EV_THROW
1507{ 2757{
1508 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
1509 2759
1510#ifndef __NetBSD__ 2760#ifndef __NetBSD__
1511 /* kqueue is borked on everything but netbsd apparently */ 2761 /* kqueue is borked on everything but netbsd apparently */
… …
1515#ifdef __APPLE__ 2765#ifdef __APPLE__
1516 /* only select works correctly on that "unix-certified" platform */ 2766 /* only select works correctly on that "unix-certified" platform */
1517 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2767 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1518 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2768 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1519#endif 2769#endif
2770#ifdef __FreeBSD__
2771 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2772#endif
1520 2773
1521 return flags; 2774 return flags;
1522} 2775}
1523 2776
2777ecb_cold
1524unsigned int 2778unsigned int
1525ev_embeddable_backends (void) 2779ev_embeddable_backends (void) EV_THROW
1526{ 2780{
1527 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1528 2782
1529 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2783 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1530 /* please fix it and tell me how to detect the fix */ 2784 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1531 flags &= ~EVBACKEND_EPOLL; 2785 flags &= ~EVBACKEND_EPOLL;
1532 2786
1533 return flags; 2787 return flags;
1534} 2788}
1535 2789
1536unsigned int 2790unsigned int
1537ev_backend (EV_P) 2791ev_backend (EV_P) EV_THROW
1538{ 2792{
1539 return backend; 2793 return backend;
1540} 2794}
1541 2795
1542#if EV_MINIMAL < 2 2796#if EV_FEATURE_API
1543unsigned int 2797unsigned int
1544ev_loop_count (EV_P) 2798ev_iteration (EV_P) EV_THROW
1545{ 2799{
1546 return loop_count; 2800 return loop_count;
1547} 2801}
1548 2802
1549unsigned int 2803unsigned int
1550ev_loop_depth (EV_P) 2804ev_depth (EV_P) EV_THROW
1551{ 2805{
1552 return loop_depth; 2806 return loop_depth;
1553} 2807}
1554 2808
1555void 2809void
1556ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2810ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1557{ 2811{
1558 io_blocktime = interval; 2812 io_blocktime = interval;
1559} 2813}
1560 2814
1561void 2815void
1562ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2816ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1563{ 2817{
1564 timeout_blocktime = interval; 2818 timeout_blocktime = interval;
1565} 2819}
1566 2820
1567void 2821void
1568ev_set_userdata (EV_P_ void *data) 2822ev_set_userdata (EV_P_ void *data) EV_THROW
1569{ 2823{
1570 userdata = data; 2824 userdata = data;
1571} 2825}
1572 2826
1573void * 2827void *
1574ev_userdata (EV_P) 2828ev_userdata (EV_P) EV_THROW
1575{ 2829{
1576 return userdata; 2830 return userdata;
1577} 2831}
1578 2832
2833void
1579void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2834ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1580{ 2835{
1581 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
1582} 2837}
1583 2838
2839void
1584void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2840ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1585{ 2841{
1586 release_cb = release; 2842 release_cb = release;
1587 acquire_cb = acquire; 2843 acquire_cb = acquire;
1588} 2844}
1589#endif 2845#endif
1590 2846
1591/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
1592static void noinline 2848noinline ecb_cold
2849static void
1593loop_init (EV_P_ unsigned int flags) 2850loop_init (EV_P_ unsigned int flags) EV_THROW
1594{ 2851{
1595 if (!backend) 2852 if (!backend)
1596 { 2853 {
2854 origflags = flags;
2855
1597#if EV_USE_REALTIME 2856#if EV_USE_REALTIME
1598 if (!have_realtime) 2857 if (!have_realtime)
1599 { 2858 {
1600 struct timespec ts; 2859 struct timespec ts;
1601 2860
… …
1623 if (!(flags & EVFLAG_NOENV) 2882 if (!(flags & EVFLAG_NOENV)
1624 && !enable_secure () 2883 && !enable_secure ()
1625 && getenv ("LIBEV_FLAGS")) 2884 && getenv ("LIBEV_FLAGS"))
1626 flags = atoi (getenv ("LIBEV_FLAGS")); 2885 flags = atoi (getenv ("LIBEV_FLAGS"));
1627 2886
1628 ev_rt_now = ev_time (); 2887 ev_rt_now = ev_time ();
1629 mn_now = get_clock (); 2888 mn_now = get_clock ();
1630 now_floor = mn_now; 2889 now_floor = mn_now;
1631 rtmn_diff = ev_rt_now - mn_now; 2890 rtmn_diff = ev_rt_now - mn_now;
1632#if EV_MINIMAL < 2 2891#if EV_FEATURE_API
1633 invoke_cb = ev_invoke_pending; 2892 invoke_cb = ev_invoke_pending;
1634#endif 2893#endif
1635 2894
1636 io_blocktime = 0.; 2895 io_blocktime = 0.;
1637 timeout_blocktime = 0.; 2896 timeout_blocktime = 0.;
1638 backend = 0; 2897 backend = 0;
1639 backend_fd = -1; 2898 backend_fd = -1;
1640 sig_pending = 0; 2899 sig_pending = 0;
1641#if EV_ASYNC_ENABLE 2900#if EV_ASYNC_ENABLE
1642 async_pending = 0; 2901 async_pending = 0;
1643#endif 2902#endif
2903 pipe_write_skipped = 0;
2904 pipe_write_wanted = 0;
2905 evpipe [0] = -1;
2906 evpipe [1] = -1;
1644#if EV_USE_INOTIFY 2907#if EV_USE_INOTIFY
1645 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1646#endif 2909#endif
1647#if EV_USE_SIGNALFD 2910#if EV_USE_SIGNALFD
1648 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1649#endif 2912#endif
1650 2913
1651 if (!(flags & 0x0000ffffU)) 2914 if (!(flags & EVBACKEND_MASK))
1652 flags |= ev_recommended_backends (); 2915 flags |= ev_recommended_backends ();
1653 2916
2917#if EV_USE_IOCP
2918 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2919#endif
1654#if EV_USE_PORT 2920#if EV_USE_PORT
1655 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2921 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1656#endif 2922#endif
1657#if EV_USE_KQUEUE 2923#if EV_USE_KQUEUE
1658 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2924 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1675#endif 2941#endif
1676 } 2942 }
1677} 2943}
1678 2944
1679/* free up a loop structure */ 2945/* free up a loop structure */
1680static void noinline 2946ecb_cold
2947void
1681loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
1682{ 2949{
1683 int i; 2950 int i;
2951
2952#if EV_MULTIPLICITY
2953 /* mimic free (0) */
2954 if (!EV_A)
2955 return;
2956#endif
2957
2958#if EV_CLEANUP_ENABLE
2959 /* queue cleanup watchers (and execute them) */
2960 if (expect_false (cleanupcnt))
2961 {
2962 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2963 EV_INVOKE_PENDING;
2964 }
2965#endif
2966
2967#if EV_CHILD_ENABLE
2968 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2969 {
2970 ev_ref (EV_A); /* child watcher */
2971 ev_signal_stop (EV_A_ &childev);
2972 }
2973#endif
1684 2974
1685 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
1686 { 2976 {
1687 /*ev_ref (EV_A);*/ 2977 /*ev_ref (EV_A);*/
1688 /*ev_io_stop (EV_A_ &pipe_w);*/ 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
1689 2979
1690#if EV_USE_EVENTFD
1691 if (evfd >= 0)
1692 close (evfd);
1693#endif
1694
1695 if (evpipe [0] >= 0)
1696 {
1697 EV_WIN32_CLOSE_FD (evpipe [0]); 2980 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1698 EV_WIN32_CLOSE_FD (evpipe [1]); 2981 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1699 }
1700 } 2982 }
1701 2983
1702#if EV_USE_SIGNALFD 2984#if EV_USE_SIGNALFD
1703 if (ev_is_active (&sigfd_w)) 2985 if (ev_is_active (&sigfd_w))
1704 close (sigfd); 2986 close (sigfd);
… …
1710#endif 2992#endif
1711 2993
1712 if (backend_fd >= 0) 2994 if (backend_fd >= 0)
1713 close (backend_fd); 2995 close (backend_fd);
1714 2996
2997#if EV_USE_IOCP
2998 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2999#endif
1715#if EV_USE_PORT 3000#if EV_USE_PORT
1716 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3001 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1717#endif 3002#endif
1718#if EV_USE_KQUEUE 3003#if EV_USE_KQUEUE
1719 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3004 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1746 array_free (periodic, EMPTY); 3031 array_free (periodic, EMPTY);
1747#endif 3032#endif
1748#if EV_FORK_ENABLE 3033#if EV_FORK_ENABLE
1749 array_free (fork, EMPTY); 3034 array_free (fork, EMPTY);
1750#endif 3035#endif
3036#if EV_CLEANUP_ENABLE
3037 array_free (cleanup, EMPTY);
3038#endif
1751 array_free (prepare, EMPTY); 3039 array_free (prepare, EMPTY);
1752 array_free (check, EMPTY); 3040 array_free (check, EMPTY);
1753#if EV_ASYNC_ENABLE 3041#if EV_ASYNC_ENABLE
1754 array_free (async, EMPTY); 3042 array_free (async, EMPTY);
1755#endif 3043#endif
1756 3044
1757 backend = 0; 3045 backend = 0;
3046
3047#if EV_MULTIPLICITY
3048 if (ev_is_default_loop (EV_A))
3049#endif
3050 ev_default_loop_ptr = 0;
3051#if EV_MULTIPLICITY
3052 else
3053 ev_free (EV_A);
3054#endif
1758} 3055}
1759 3056
1760#if EV_USE_INOTIFY 3057#if EV_USE_INOTIFY
1761inline_size void infy_fork (EV_P); 3058inline_size void infy_fork (EV_P);
1762#endif 3059#endif
… …
1775#endif 3072#endif
1776#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
1777 infy_fork (EV_A); 3074 infy_fork (EV_A);
1778#endif 3075#endif
1779 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1780 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
1781 { 3079 {
1782 /* this "locks" the handlers against writing to the pipe */ 3080 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1783 /* while we modify the fd vars */
1784 sig_pending = 1;
1785#if EV_ASYNC_ENABLE
1786 async_pending = 1;
1787#endif
1788 3081
1789 ev_ref (EV_A); 3082 ev_ref (EV_A);
1790 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
1791 3084
1792#if EV_USE_EVENTFD
1793 if (evfd >= 0)
1794 close (evfd);
1795#endif
1796
1797 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
1798 {
1799 EV_WIN32_CLOSE_FD (evpipe [0]); 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
1800 EV_WIN32_CLOSE_FD (evpipe [1]);
1801 }
1802 3087
1803#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1804 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
1805 /* now iterate over everything, in case we missed something */ 3089 /* iterate over everything, in case we missed something before */
1806 pipecb (EV_A_ &pipe_w, EV_READ); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1807#endif
1808 } 3091 }
3092#endif
1809 3093
1810 postfork = 0; 3094 postfork = 0;
1811} 3095}
1812 3096
1813#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
1814 3098
3099ecb_cold
1815struct ev_loop * 3100struct ev_loop *
1816ev_loop_new (unsigned int flags) 3101ev_loop_new (unsigned int flags) EV_THROW
1817{ 3102{
1818 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1819 3104
1820 memset (EV_A, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
1821 loop_init (EV_A_ flags); 3106 loop_init (EV_A_ flags);
1822 3107
1823 if (ev_backend (EV_A)) 3108 if (ev_backend (EV_A))
1824 return EV_A; 3109 return EV_A;
1825 3110
3111 ev_free (EV_A);
1826 return 0; 3112 return 0;
1827} 3113}
1828 3114
1829void
1830ev_loop_destroy (EV_P)
1831{
1832 loop_destroy (EV_A);
1833 ev_free (loop);
1834}
1835
1836void
1837ev_loop_fork (EV_P)
1838{
1839 postfork = 1; /* must be in line with ev_default_fork */
1840}
1841#endif /* multiplicity */ 3115#endif /* multiplicity */
1842 3116
1843#if EV_VERIFY 3117#if EV_VERIFY
1844static void noinline 3118noinline ecb_cold
3119static void
1845verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
1846{ 3121{
1847 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3122 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1848 3123
1849 if (w->pending) 3124 if (w->pending)
1850 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3125 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1851} 3126}
1852 3127
1853static void noinline 3128noinline ecb_cold
3129static void
1854verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
1855{ 3131{
1856 int i; 3132 int i;
1857 3133
1858 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1863 3139
1864 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1865 } 3141 }
1866} 3142}
1867 3143
1868static void noinline 3144noinline ecb_cold
3145static void
1869array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
1870{ 3147{
1871 while (cnt--) 3148 while (cnt--)
1872 { 3149 {
1873 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1874 verify_watcher (EV_A_ ws [cnt]); 3151 verify_watcher (EV_A_ ws [cnt]);
1875 } 3152 }
1876} 3153}
1877#endif 3154#endif
1878 3155
1879#if EV_MINIMAL < 2 3156#if EV_FEATURE_API
1880void 3157void ecb_cold
1881ev_loop_verify (EV_P) 3158ev_verify (EV_P) EV_THROW
1882{ 3159{
1883#if EV_VERIFY 3160#if EV_VERIFY
1884 int i; 3161 int i;
1885 WL w; 3162 WL w, w2;
1886 3163
1887 assert (activecnt >= -1); 3164 assert (activecnt >= -1);
1888 3165
1889 assert (fdchangemax >= fdchangecnt); 3166 assert (fdchangemax >= fdchangecnt);
1890 for (i = 0; i < fdchangecnt; ++i) 3167 for (i = 0; i < fdchangecnt; ++i)
1891 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3168 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1892 3169
1893 assert (anfdmax >= 0); 3170 assert (anfdmax >= 0);
1894 for (i = 0; i < anfdmax; ++i) 3171 for (i = 0; i < anfdmax; ++i)
3172 {
3173 int j = 0;
3174
1895 for (w = anfds [i].head; w; w = w->next) 3175 for (w = w2 = anfds [i].head; w; w = w->next)
1896 { 3176 {
1897 verify_watcher (EV_A_ (W)w); 3177 verify_watcher (EV_A_ (W)w);
3178
3179 if (j++ & 1)
3180 {
3181 assert (("libev: io watcher list contains a loop", w != w2));
3182 w2 = w2->next;
3183 }
3184
1898 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3185 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1899 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3186 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1900 } 3187 }
3188 }
1901 3189
1902 assert (timermax >= timercnt); 3190 assert (timermax >= timercnt);
1903 verify_heap (EV_A_ timers, timercnt); 3191 verify_heap (EV_A_ timers, timercnt);
1904 3192
1905#if EV_PERIODIC_ENABLE 3193#if EV_PERIODIC_ENABLE
… …
1920#if EV_FORK_ENABLE 3208#if EV_FORK_ENABLE
1921 assert (forkmax >= forkcnt); 3209 assert (forkmax >= forkcnt);
1922 array_verify (EV_A_ (W *)forks, forkcnt); 3210 array_verify (EV_A_ (W *)forks, forkcnt);
1923#endif 3211#endif
1924 3212
3213#if EV_CLEANUP_ENABLE
3214 assert (cleanupmax >= cleanupcnt);
3215 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3216#endif
3217
1925#if EV_ASYNC_ENABLE 3218#if EV_ASYNC_ENABLE
1926 assert (asyncmax >= asynccnt); 3219 assert (asyncmax >= asynccnt);
1927 array_verify (EV_A_ (W *)asyncs, asynccnt); 3220 array_verify (EV_A_ (W *)asyncs, asynccnt);
1928#endif 3221#endif
1929 3222
… …
1937 array_verify (EV_A_ (W *)checks, checkcnt); 3230 array_verify (EV_A_ (W *)checks, checkcnt);
1938#endif 3231#endif
1939 3232
1940# if 0 3233# if 0
1941#if EV_CHILD_ENABLE 3234#if EV_CHILD_ENABLE
1942 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3235 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1943 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3236 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1944#endif 3237#endif
1945# endif 3238# endif
1946#endif 3239#endif
1947} 3240}
1948#endif 3241#endif
1949 3242
1950#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
1951struct ev_loop * 3245struct ev_loop *
1952ev_default_loop_init (unsigned int flags)
1953#else 3246#else
1954int 3247int
3248#endif
1955ev_default_loop (unsigned int flags) 3249ev_default_loop (unsigned int flags) EV_THROW
1956#endif
1957{ 3250{
1958 if (!ev_default_loop_ptr) 3251 if (!ev_default_loop_ptr)
1959 { 3252 {
1960#if EV_MULTIPLICITY 3253#if EV_MULTIPLICITY
1961 EV_P = ev_default_loop_ptr = &default_loop_struct; 3254 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1980 3273
1981 return ev_default_loop_ptr; 3274 return ev_default_loop_ptr;
1982} 3275}
1983 3276
1984void 3277void
1985ev_default_destroy (void) 3278ev_loop_fork (EV_P) EV_THROW
1986{ 3279{
1987#if EV_MULTIPLICITY 3280 postfork = 1;
1988 EV_P = ev_default_loop_ptr;
1989#endif
1990
1991 ev_default_loop_ptr = 0;
1992
1993#if EV_CHILD_ENABLE
1994 ev_ref (EV_A); /* child watcher */
1995 ev_signal_stop (EV_A_ &childev);
1996#endif
1997
1998 loop_destroy (EV_A);
1999}
2000
2001void
2002ev_default_fork (void)
2003{
2004#if EV_MULTIPLICITY
2005 EV_P = ev_default_loop_ptr;
2006#endif
2007
2008 postfork = 1; /* must be in line with ev_loop_fork */
2009} 3281}
2010 3282
2011/*****************************************************************************/ 3283/*****************************************************************************/
2012 3284
2013void 3285void
… …
2015{ 3287{
2016 EV_CB_INVOKE ((W)w, revents); 3288 EV_CB_INVOKE ((W)w, revents);
2017} 3289}
2018 3290
2019unsigned int 3291unsigned int
2020ev_pending_count (EV_P) 3292ev_pending_count (EV_P) EV_THROW
2021{ 3293{
2022 int pri; 3294 int pri;
2023 unsigned int count = 0; 3295 unsigned int count = 0;
2024 3296
2025 for (pri = NUMPRI; pri--; ) 3297 for (pri = NUMPRI; pri--; )
2026 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
2027 3299
2028 return count; 3300 return count;
2029} 3301}
2030 3302
2031void noinline 3303noinline
3304void
2032ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
2033{ 3306{
2034 int pri; 3307 pendingpri = NUMPRI;
2035 3308
2036 for (pri = NUMPRI; pri--; ) 3309 do
3310 {
3311 --pendingpri;
3312
3313 /* pendingpri possibly gets modified in the inner loop */
2037 while (pendingcnt [pri]) 3314 while (pendingcnt [pendingpri])
2038 { 3315 {
2039 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3316 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2040 3317
2041 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2042 /* ^ this is no longer true, as pending_w could be here */
2043
2044 p->w->pending = 0; 3318 p->w->pending = 0;
2045 EV_CB_INVOKE (p->w, p->events); 3319 EV_CB_INVOKE (p->w, p->events);
2046 EV_FREQUENT_CHECK; 3320 EV_FREQUENT_CHECK;
2047 } 3321 }
3322 }
3323 while (pendingpri);
2048} 3324}
2049 3325
2050#if EV_IDLE_ENABLE 3326#if EV_IDLE_ENABLE
2051/* make idle watchers pending. this handles the "call-idle */ 3327/* make idle watchers pending. this handles the "call-idle */
2052/* only when higher priorities are idle" logic */ 3328/* only when higher priorities are idle" logic */
… …
2104 EV_FREQUENT_CHECK; 3380 EV_FREQUENT_CHECK;
2105 feed_reverse (EV_A_ (W)w); 3381 feed_reverse (EV_A_ (W)w);
2106 } 3382 }
2107 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3383 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2108 3384
2109 feed_reverse_done (EV_A_ EV_TIMEOUT); 3385 feed_reverse_done (EV_A_ EV_TIMER);
2110 } 3386 }
2111} 3387}
2112 3388
2113#if EV_PERIODIC_ENABLE 3389#if EV_PERIODIC_ENABLE
3390
3391noinline
3392static void
3393periodic_recalc (EV_P_ ev_periodic *w)
3394{
3395 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3396 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3397
3398 /* the above almost always errs on the low side */
3399 while (at <= ev_rt_now)
3400 {
3401 ev_tstamp nat = at + w->interval;
3402
3403 /* when resolution fails us, we use ev_rt_now */
3404 if (expect_false (nat == at))
3405 {
3406 at = ev_rt_now;
3407 break;
3408 }
3409
3410 at = nat;
3411 }
3412
3413 ev_at (w) = at;
3414}
3415
2114/* make periodics pending */ 3416/* make periodics pending */
2115inline_size void 3417inline_size void
2116periodics_reify (EV_P) 3418periodics_reify (EV_P)
2117{ 3419{
2118 EV_FREQUENT_CHECK; 3420 EV_FREQUENT_CHECK;
2119 3421
2120 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3422 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2121 { 3423 {
2122 int feed_count = 0;
2123
2124 do 3424 do
2125 { 3425 {
2126 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3426 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2127 3427
2128 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3428 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2137 ANHE_at_cache (periodics [HEAP0]); 3437 ANHE_at_cache (periodics [HEAP0]);
2138 downheap (periodics, periodiccnt, HEAP0); 3438 downheap (periodics, periodiccnt, HEAP0);
2139 } 3439 }
2140 else if (w->interval) 3440 else if (w->interval)
2141 { 3441 {
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3442 periodic_recalc (EV_A_ w);
2143 /* if next trigger time is not sufficiently in the future, put it there */
2144 /* this might happen because of floating point inexactness */
2145 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2146 {
2147 ev_at (w) += w->interval;
2148
2149 /* if interval is unreasonably low we might still have a time in the past */
2150 /* so correct this. this will make the periodic very inexact, but the user */
2151 /* has effectively asked to get triggered more often than possible */
2152 if (ev_at (w) < ev_rt_now)
2153 ev_at (w) = ev_rt_now;
2154 }
2155
2156 ANHE_at_cache (periodics [HEAP0]); 3443 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 3444 downheap (periodics, periodiccnt, HEAP0);
2158 } 3445 }
2159 else 3446 else
2160 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3447 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2167 feed_reverse_done (EV_A_ EV_PERIODIC); 3454 feed_reverse_done (EV_A_ EV_PERIODIC);
2168 } 3455 }
2169} 3456}
2170 3457
2171/* simply recalculate all periodics */ 3458/* simply recalculate all periodics */
2172/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3459/* TODO: maybe ensure that at least one event happens when jumping forward? */
2173static void noinline 3460noinline ecb_cold
3461static void
2174periodics_reschedule (EV_P) 3462periodics_reschedule (EV_P)
2175{ 3463{
2176 int i; 3464 int i;
2177 3465
2178 /* adjust periodics after time jump */ 3466 /* adjust periodics after time jump */
… …
2181 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3469 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2182 3470
2183 if (w->reschedule_cb) 3471 if (w->reschedule_cb)
2184 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3472 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2185 else if (w->interval) 3473 else if (w->interval)
2186 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3474 periodic_recalc (EV_A_ w);
2187 3475
2188 ANHE_at_cache (periodics [i]); 3476 ANHE_at_cache (periodics [i]);
2189 } 3477 }
2190 3478
2191 reheap (periodics, periodiccnt); 3479 reheap (periodics, periodiccnt);
2192} 3480}
2193#endif 3481#endif
2194 3482
2195/* adjust all timers by a given offset */ 3483/* adjust all timers by a given offset */
2196static void noinline 3484noinline ecb_cold
3485static void
2197timers_reschedule (EV_P_ ev_tstamp adjust) 3486timers_reschedule (EV_P_ ev_tstamp adjust)
2198{ 3487{
2199 int i; 3488 int i;
2200 3489
2201 for (i = 0; i < timercnt; ++i) 3490 for (i = 0; i < timercnt; ++i)
… …
2238 * doesn't hurt either as we only do this on time-jumps or 3527 * doesn't hurt either as we only do this on time-jumps or
2239 * in the unlikely event of having been preempted here. 3528 * in the unlikely event of having been preempted here.
2240 */ 3529 */
2241 for (i = 4; --i; ) 3530 for (i = 4; --i; )
2242 { 3531 {
3532 ev_tstamp diff;
2243 rtmn_diff = ev_rt_now - mn_now; 3533 rtmn_diff = ev_rt_now - mn_now;
2244 3534
3535 diff = odiff - rtmn_diff;
3536
2245 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3537 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2246 return; /* all is well */ 3538 return; /* all is well */
2247 3539
2248 ev_rt_now = ev_time (); 3540 ev_rt_now = ev_time ();
2249 mn_now = get_clock (); 3541 mn_now = get_clock ();
2250 now_floor = mn_now; 3542 now_floor = mn_now;
… …
2272 3564
2273 mn_now = ev_rt_now; 3565 mn_now = ev_rt_now;
2274 } 3566 }
2275} 3567}
2276 3568
2277void 3569int
2278ev_loop (EV_P_ int flags) 3570ev_run (EV_P_ int flags)
2279{ 3571{
2280#if EV_MINIMAL < 2 3572#if EV_FEATURE_API
2281 ++loop_depth; 3573 ++loop_depth;
2282#endif 3574#endif
2283 3575
2284 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3576 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2285 3577
2286 loop_done = EVUNLOOP_CANCEL; 3578 loop_done = EVBREAK_CANCEL;
2287 3579
2288 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3580 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2289 3581
2290 do 3582 do
2291 { 3583 {
2292#if EV_VERIFY >= 2 3584#if EV_VERIFY >= 2
2293 ev_loop_verify (EV_A); 3585 ev_verify (EV_A);
2294#endif 3586#endif
2295 3587
2296#ifndef _WIN32 3588#ifndef _WIN32
2297 if (expect_false (curpid)) /* penalise the forking check even more */ 3589 if (expect_false (curpid)) /* penalise the forking check even more */
2298 if (expect_false (getpid () != curpid)) 3590 if (expect_false (getpid () != curpid))
… …
2334 /* calculate blocking time */ 3626 /* calculate blocking time */
2335 { 3627 {
2336 ev_tstamp waittime = 0.; 3628 ev_tstamp waittime = 0.;
2337 ev_tstamp sleeptime = 0.; 3629 ev_tstamp sleeptime = 0.;
2338 3630
3631 /* remember old timestamp for io_blocktime calculation */
3632 ev_tstamp prev_mn_now = mn_now;
3633
3634 /* update time to cancel out callback processing overhead */
3635 time_update (EV_A_ 1e100);
3636
3637 /* from now on, we want a pipe-wake-up */
3638 pipe_write_wanted = 1;
3639
3640 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3641
2339 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3642 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2340 { 3643 {
2341 /* remember old timestamp for io_blocktime calculation */
2342 ev_tstamp prev_mn_now = mn_now;
2343
2344 /* update time to cancel out callback processing overhead */
2345 time_update (EV_A_ 1e100);
2346
2347 waittime = MAX_BLOCKTIME; 3644 waittime = MAX_BLOCKTIME;
2348 3645
2349 if (timercnt) 3646 if (timercnt)
2350 { 3647 {
2351 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3648 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2352 if (waittime > to) waittime = to; 3649 if (waittime > to) waittime = to;
2353 } 3650 }
2354 3651
2355#if EV_PERIODIC_ENABLE 3652#if EV_PERIODIC_ENABLE
2356 if (periodiccnt) 3653 if (periodiccnt)
2357 { 3654 {
2358 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3655 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2359 if (waittime > to) waittime = to; 3656 if (waittime > to) waittime = to;
2360 } 3657 }
2361#endif 3658#endif
2362 3659
2363 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3660 /* don't let timeouts decrease the waittime below timeout_blocktime */
2364 if (expect_false (waittime < timeout_blocktime)) 3661 if (expect_false (waittime < timeout_blocktime))
2365 waittime = timeout_blocktime; 3662 waittime = timeout_blocktime;
3663
3664 /* at this point, we NEED to wait, so we have to ensure */
3665 /* to pass a minimum nonzero value to the backend */
3666 if (expect_false (waittime < backend_mintime))
3667 waittime = backend_mintime;
2366 3668
2367 /* extra check because io_blocktime is commonly 0 */ 3669 /* extra check because io_blocktime is commonly 0 */
2368 if (expect_false (io_blocktime)) 3670 if (expect_false (io_blocktime))
2369 { 3671 {
2370 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3672 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2371 3673
2372 if (sleeptime > waittime - backend_fudge) 3674 if (sleeptime > waittime - backend_mintime)
2373 sleeptime = waittime - backend_fudge; 3675 sleeptime = waittime - backend_mintime;
2374 3676
2375 if (expect_true (sleeptime > 0.)) 3677 if (expect_true (sleeptime > 0.))
2376 { 3678 {
2377 ev_sleep (sleeptime); 3679 ev_sleep (sleeptime);
2378 waittime -= sleeptime; 3680 waittime -= sleeptime;
2379 } 3681 }
2380 } 3682 }
2381 } 3683 }
2382 3684
2383#if EV_MINIMAL < 2 3685#if EV_FEATURE_API
2384 ++loop_count; 3686 ++loop_count;
2385#endif 3687#endif
2386 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3688 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2387 backend_poll (EV_A_ waittime); 3689 backend_poll (EV_A_ waittime);
2388 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3690 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3691
3692 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3693
3694 ECB_MEMORY_FENCE_ACQUIRE;
3695 if (pipe_write_skipped)
3696 {
3697 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3698 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3699 }
3700
2389 3701
2390 /* update ev_rt_now, do magic */ 3702 /* update ev_rt_now, do magic */
2391 time_update (EV_A_ waittime + sleeptime); 3703 time_update (EV_A_ waittime + sleeptime);
2392 } 3704 }
2393 3705
… …
2411 EV_INVOKE_PENDING; 3723 EV_INVOKE_PENDING;
2412 } 3724 }
2413 while (expect_true ( 3725 while (expect_true (
2414 activecnt 3726 activecnt
2415 && !loop_done 3727 && !loop_done
2416 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3728 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2417 )); 3729 ));
2418 3730
2419 if (loop_done == EVUNLOOP_ONE) 3731 if (loop_done == EVBREAK_ONE)
2420 loop_done = EVUNLOOP_CANCEL; 3732 loop_done = EVBREAK_CANCEL;
2421 3733
2422#if EV_MINIMAL < 2 3734#if EV_FEATURE_API
2423 --loop_depth; 3735 --loop_depth;
2424#endif 3736#endif
2425}
2426 3737
3738 return activecnt;
3739}
3740
2427void 3741void
2428ev_unloop (EV_P_ int how) 3742ev_break (EV_P_ int how) EV_THROW
2429{ 3743{
2430 loop_done = how; 3744 loop_done = how;
2431} 3745}
2432 3746
2433void 3747void
2434ev_ref (EV_P) 3748ev_ref (EV_P) EV_THROW
2435{ 3749{
2436 ++activecnt; 3750 ++activecnt;
2437} 3751}
2438 3752
2439void 3753void
2440ev_unref (EV_P) 3754ev_unref (EV_P) EV_THROW
2441{ 3755{
2442 --activecnt; 3756 --activecnt;
2443} 3757}
2444 3758
2445void 3759void
2446ev_now_update (EV_P) 3760ev_now_update (EV_P) EV_THROW
2447{ 3761{
2448 time_update (EV_A_ 1e100); 3762 time_update (EV_A_ 1e100);
2449} 3763}
2450 3764
2451void 3765void
2452ev_suspend (EV_P) 3766ev_suspend (EV_P) EV_THROW
2453{ 3767{
2454 ev_now_update (EV_A); 3768 ev_now_update (EV_A);
2455} 3769}
2456 3770
2457void 3771void
2458ev_resume (EV_P) 3772ev_resume (EV_P) EV_THROW
2459{ 3773{
2460 ev_tstamp mn_prev = mn_now; 3774 ev_tstamp mn_prev = mn_now;
2461 3775
2462 ev_now_update (EV_A); 3776 ev_now_update (EV_A);
2463 timers_reschedule (EV_A_ mn_now - mn_prev); 3777 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2502 w->pending = 0; 3816 w->pending = 0;
2503 } 3817 }
2504} 3818}
2505 3819
2506int 3820int
2507ev_clear_pending (EV_P_ void *w) 3821ev_clear_pending (EV_P_ void *w) EV_THROW
2508{ 3822{
2509 W w_ = (W)w; 3823 W w_ = (W)w;
2510 int pending = w_->pending; 3824 int pending = w_->pending;
2511 3825
2512 if (expect_true (pending)) 3826 if (expect_true (pending))
… …
2544 w->active = 0; 3858 w->active = 0;
2545} 3859}
2546 3860
2547/*****************************************************************************/ 3861/*****************************************************************************/
2548 3862
2549void noinline 3863noinline
3864void
2550ev_io_start (EV_P_ ev_io *w) 3865ev_io_start (EV_P_ ev_io *w) EV_THROW
2551{ 3866{
2552 int fd = w->fd; 3867 int fd = w->fd;
2553 3868
2554 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
2555 return; 3870 return;
… …
2561 3876
2562 ev_start (EV_A_ (W)w, 1); 3877 ev_start (EV_A_ (W)w, 1);
2563 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3878 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2564 wlist_add (&anfds[fd].head, (WL)w); 3879 wlist_add (&anfds[fd].head, (WL)w);
2565 3880
3881 /* common bug, apparently */
3882 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3883
2566 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3884 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2567 w->events &= ~EV__IOFDSET; 3885 w->events &= ~EV__IOFDSET;
2568 3886
2569 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
2570} 3888}
2571 3889
2572void noinline 3890noinline
3891void
2573ev_io_stop (EV_P_ ev_io *w) 3892ev_io_stop (EV_P_ ev_io *w) EV_THROW
2574{ 3893{
2575 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
2576 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
2577 return; 3896 return;
2578 3897
… …
2581 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
2582 3901
2583 wlist_del (&anfds[w->fd].head, (WL)w); 3902 wlist_del (&anfds[w->fd].head, (WL)w);
2584 ev_stop (EV_A_ (W)w); 3903 ev_stop (EV_A_ (W)w);
2585 3904
2586 fd_change (EV_A_ w->fd, 1); 3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2587 3906
2588 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
2589} 3908}
2590 3909
2591void noinline 3910noinline
3911void
2592ev_timer_start (EV_P_ ev_timer *w) 3912ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2593{ 3913{
2594 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
2595 return; 3915 return;
2596 3916
2597 ev_at (w) += mn_now; 3917 ev_at (w) += mn_now;
… …
2610 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
2611 3931
2612 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3932 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2613} 3933}
2614 3934
2615void noinline 3935noinline
3936void
2616ev_timer_stop (EV_P_ ev_timer *w) 3937ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2617{ 3938{
2618 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
2619 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
2620 return; 3941 return;
2621 3942
… …
2640 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
2641 3962
2642 EV_FREQUENT_CHECK; 3963 EV_FREQUENT_CHECK;
2643} 3964}
2644 3965
2645void noinline 3966noinline
3967void
2646ev_timer_again (EV_P_ ev_timer *w) 3968ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2647{ 3969{
2648 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3971
3972 clear_pending (EV_A_ (W)w);
2649 3973
2650 if (ev_is_active (w)) 3974 if (ev_is_active (w))
2651 { 3975 {
2652 if (w->repeat) 3976 if (w->repeat)
2653 { 3977 {
… …
2666 3990
2667 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
2668} 3992}
2669 3993
2670ev_tstamp 3994ev_tstamp
2671ev_timer_remaining (EV_P_ ev_timer *w) 3995ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2672{ 3996{
2673 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3997 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2674} 3998}
2675 3999
2676#if EV_PERIODIC_ENABLE 4000#if EV_PERIODIC_ENABLE
2677void noinline 4001noinline
4002void
2678ev_periodic_start (EV_P_ ev_periodic *w) 4003ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2679{ 4004{
2680 if (expect_false (ev_is_active (w))) 4005 if (expect_false (ev_is_active (w)))
2681 return; 4006 return;
2682 4007
2683 if (w->reschedule_cb) 4008 if (w->reschedule_cb)
2684 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4009 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2685 else if (w->interval) 4010 else if (w->interval)
2686 { 4011 {
2687 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4012 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2688 /* this formula differs from the one in periodic_reify because we do not always round up */ 4013 periodic_recalc (EV_A_ w);
2689 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2690 } 4014 }
2691 else 4015 else
2692 ev_at (w) = w->offset; 4016 ev_at (w) = w->offset;
2693 4017
2694 EV_FREQUENT_CHECK; 4018 EV_FREQUENT_CHECK;
… …
2703 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
2704 4028
2705 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4029 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2706} 4030}
2707 4031
2708void noinline 4032noinline
4033void
2709ev_periodic_stop (EV_P_ ev_periodic *w) 4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2710{ 4035{
2711 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
2712 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
2713 return; 4038 return;
2714 4039
… …
2731 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
2732 4057
2733 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
2734} 4059}
2735 4060
2736void noinline 4061noinline
4062void
2737ev_periodic_again (EV_P_ ev_periodic *w) 4063ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2738{ 4064{
2739 /* TODO: use adjustheap and recalculation */ 4065 /* TODO: use adjustheap and recalculation */
2740 ev_periodic_stop (EV_A_ w); 4066 ev_periodic_stop (EV_A_ w);
2741 ev_periodic_start (EV_A_ w); 4067 ev_periodic_start (EV_A_ w);
2742} 4068}
… …
2746# define SA_RESTART 0 4072# define SA_RESTART 0
2747#endif 4073#endif
2748 4074
2749#if EV_SIGNAL_ENABLE 4075#if EV_SIGNAL_ENABLE
2750 4076
2751void noinline 4077noinline
4078void
2752ev_signal_start (EV_P_ ev_signal *w) 4079ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2753{ 4080{
2754 if (expect_false (ev_is_active (w))) 4081 if (expect_false (ev_is_active (w)))
2755 return; 4082 return;
2756 4083
2757 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4084 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2759#if EV_MULTIPLICITY 4086#if EV_MULTIPLICITY
2760 assert (("libev: a signal must not be attached to two different loops", 4087 assert (("libev: a signal must not be attached to two different loops",
2761 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4088 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2762 4089
2763 signals [w->signum - 1].loop = EV_A; 4090 signals [w->signum - 1].loop = EV_A;
4091 ECB_MEMORY_FENCE_RELEASE;
2764#endif 4092#endif
2765 4093
2766 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2767 4095
2768#if EV_USE_SIGNALFD 4096#if EV_USE_SIGNALFD
… …
2815 sa.sa_handler = ev_sighandler; 4143 sa.sa_handler = ev_sighandler;
2816 sigfillset (&sa.sa_mask); 4144 sigfillset (&sa.sa_mask);
2817 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4145 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2818 sigaction (w->signum, &sa, 0); 4146 sigaction (w->signum, &sa, 0);
2819 4147
4148 if (origflags & EVFLAG_NOSIGMASK)
4149 {
2820 sigemptyset (&sa.sa_mask); 4150 sigemptyset (&sa.sa_mask);
2821 sigaddset (&sa.sa_mask, w->signum); 4151 sigaddset (&sa.sa_mask, w->signum);
2822 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4152 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4153 }
2823#endif 4154#endif
2824 } 4155 }
2825 4156
2826 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
2827} 4158}
2828 4159
2829void noinline 4160noinline
4161void
2830ev_signal_stop (EV_P_ ev_signal *w) 4162ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2831{ 4163{
2832 clear_pending (EV_A_ (W)w); 4164 clear_pending (EV_A_ (W)w);
2833 if (expect_false (!ev_is_active (w))) 4165 if (expect_false (!ev_is_active (w)))
2834 return; 4166 return;
2835 4167
… …
2866#endif 4198#endif
2867 4199
2868#if EV_CHILD_ENABLE 4200#if EV_CHILD_ENABLE
2869 4201
2870void 4202void
2871ev_child_start (EV_P_ ev_child *w) 4203ev_child_start (EV_P_ ev_child *w) EV_THROW
2872{ 4204{
2873#if EV_MULTIPLICITY 4205#if EV_MULTIPLICITY
2874 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4206 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2875#endif 4207#endif
2876 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
2877 return; 4209 return;
2878 4210
2879 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
2880 4212
2881 ev_start (EV_A_ (W)w, 1); 4213 ev_start (EV_A_ (W)w, 1);
2882 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4214 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2883 4215
2884 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
2885} 4217}
2886 4218
2887void 4219void
2888ev_child_stop (EV_P_ ev_child *w) 4220ev_child_stop (EV_P_ ev_child *w) EV_THROW
2889{ 4221{
2890 clear_pending (EV_A_ (W)w); 4222 clear_pending (EV_A_ (W)w);
2891 if (expect_false (!ev_is_active (w))) 4223 if (expect_false (!ev_is_active (w)))
2892 return; 4224 return;
2893 4225
2894 EV_FREQUENT_CHECK; 4226 EV_FREQUENT_CHECK;
2895 4227
2896 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4228 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2897 ev_stop (EV_A_ (W)w); 4229 ev_stop (EV_A_ (W)w);
2898 4230
2899 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
2900} 4232}
2901 4233
… …
2910 4242
2911#define DEF_STAT_INTERVAL 5.0074891 4243#define DEF_STAT_INTERVAL 5.0074891
2912#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2913#define MIN_STAT_INTERVAL 0.1074891 4245#define MIN_STAT_INTERVAL 0.1074891
2914 4246
2915static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4247noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2916 4248
2917#if EV_USE_INOTIFY 4249#if EV_USE_INOTIFY
2918 4250
2919/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4251/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2920# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4252# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2921 4253
2922static void noinline 4254noinline
4255static void
2923infy_add (EV_P_ ev_stat *w) 4256infy_add (EV_P_ ev_stat *w)
2924{ 4257{
2925 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); 4258 w->wd = inotify_add_watch (fs_fd, w->path,
4259 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4260 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4261 | IN_DONT_FOLLOW | IN_MASK_ADD);
2926 4262
2927 if (w->wd >= 0) 4263 if (w->wd >= 0)
2928 { 4264 {
2929 struct statfs sfs; 4265 struct statfs sfs;
2930 4266
… …
2934 4270
2935 if (!fs_2625) 4271 if (!fs_2625)
2936 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4272 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2937 else if (!statfs (w->path, &sfs) 4273 else if (!statfs (w->path, &sfs)
2938 && (sfs.f_type == 0x1373 /* devfs */ 4274 && (sfs.f_type == 0x1373 /* devfs */
4275 || sfs.f_type == 0x4006 /* fat */
4276 || sfs.f_type == 0x4d44 /* msdos */
2939 || sfs.f_type == 0xEF53 /* ext2/3 */ 4277 || sfs.f_type == 0xEF53 /* ext2/3 */
4278 || sfs.f_type == 0x72b6 /* jffs2 */
4279 || sfs.f_type == 0x858458f6 /* ramfs */
4280 || sfs.f_type == 0x5346544e /* ntfs */
2940 || sfs.f_type == 0x3153464a /* jfs */ 4281 || sfs.f_type == 0x3153464a /* jfs */
4282 || sfs.f_type == 0x9123683e /* btrfs */
2941 || sfs.f_type == 0x52654973 /* reiser3 */ 4283 || sfs.f_type == 0x52654973 /* reiser3 */
2942 || sfs.f_type == 0x01021994 /* tempfs */ 4284 || sfs.f_type == 0x01021994 /* tmpfs */
2943 || sfs.f_type == 0x58465342 /* xfs */)) 4285 || sfs.f_type == 0x58465342 /* xfs */))
2944 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4286 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2945 else 4287 else
2946 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4288 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2947 } 4289 }
… …
2968 if (!pend || pend == path) 4310 if (!pend || pend == path)
2969 break; 4311 break;
2970 4312
2971 *pend = 0; 4313 *pend = 0;
2972 w->wd = inotify_add_watch (fs_fd, path, mask); 4314 w->wd = inotify_add_watch (fs_fd, path, mask);
2973 } 4315 }
2974 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4316 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2975 } 4317 }
2976 } 4318 }
2977 4319
2978 if (w->wd >= 0) 4320 if (w->wd >= 0)
2979 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4321 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2980 4322
2981 /* now re-arm timer, if required */ 4323 /* now re-arm timer, if required */
2982 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2983 ev_timer_again (EV_A_ &w->timer); 4325 ev_timer_again (EV_A_ &w->timer);
2984 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2985} 4327}
2986 4328
2987static void noinline 4329noinline
4330static void
2988infy_del (EV_P_ ev_stat *w) 4331infy_del (EV_P_ ev_stat *w)
2989{ 4332{
2990 int slot; 4333 int slot;
2991 int wd = w->wd; 4334 int wd = w->wd;
2992 4335
2993 if (wd < 0) 4336 if (wd < 0)
2994 return; 4337 return;
2995 4338
2996 w->wd = -2; 4339 w->wd = -2;
2997 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4340 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2998 wlist_del (&fs_hash [slot].head, (WL)w); 4341 wlist_del (&fs_hash [slot].head, (WL)w);
2999 4342
3000 /* remove this watcher, if others are watching it, they will rearm */ 4343 /* remove this watcher, if others are watching it, they will rearm */
3001 inotify_rm_watch (fs_fd, wd); 4344 inotify_rm_watch (fs_fd, wd);
3002} 4345}
3003 4346
3004static void noinline 4347noinline
4348static void
3005infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3006{ 4350{
3007 if (slot < 0) 4351 if (slot < 0)
3008 /* overflow, need to check for all hash slots */ 4352 /* overflow, need to check for all hash slots */
3009 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4353 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3010 infy_wd (EV_A_ slot, wd, ev); 4354 infy_wd (EV_A_ slot, wd, ev);
3011 else 4355 else
3012 { 4356 {
3013 WL w_; 4357 WL w_;
3014 4358
3015 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4359 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
3016 { 4360 {
3017 ev_stat *w = (ev_stat *)w_; 4361 ev_stat *w = (ev_stat *)w_;
3018 w_ = w_->next; /* lets us remove this watcher and all before it */ 4362 w_ = w_->next; /* lets us remove this watcher and all before it */
3019 4363
3020 if (w->wd == wd || wd == -1) 4364 if (w->wd == wd || wd == -1)
3021 { 4365 {
3022 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4366 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
3023 { 4367 {
3024 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4368 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3025 w->wd = -1; 4369 w->wd = -1;
3026 infy_add (EV_A_ w); /* re-add, no matter what */ 4370 infy_add (EV_A_ w); /* re-add, no matter what */
3027 } 4371 }
3028 4372
3029 stat_timer_cb (EV_A_ &w->timer, 0); 4373 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3045 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4389 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3046 ofs += sizeof (struct inotify_event) + ev->len; 4390 ofs += sizeof (struct inotify_event) + ev->len;
3047 } 4391 }
3048} 4392}
3049 4393
3050inline_size unsigned int
3051ev_linux_version (void)
3052{
3053 struct utsname buf;
3054 unsigned int v;
3055 int i;
3056 char *p = buf.release;
3057
3058 if (uname (&buf))
3059 return 0;
3060
3061 for (i = 3+1; --i; )
3062 {
3063 unsigned int c = 0;
3064
3065 for (;;)
3066 {
3067 if (*p >= '0' && *p <= '9')
3068 c = c * 10 + *p++ - '0';
3069 else
3070 {
3071 p += *p == '.';
3072 break;
3073 }
3074 }
3075
3076 v = (v << 8) | c;
3077 }
3078
3079 return v;
3080}
3081
3082inline_size void 4394inline_size ecb_cold
4395void
3083ev_check_2625 (EV_P) 4396ev_check_2625 (EV_P)
3084{ 4397{
3085 /* kernels < 2.6.25 are borked 4398 /* kernels < 2.6.25 are borked
3086 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4399 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3087 */ 4400 */
… …
3092} 4405}
3093 4406
3094inline_size int 4407inline_size int
3095infy_newfd (void) 4408infy_newfd (void)
3096{ 4409{
3097#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4410#if defined IN_CLOEXEC && defined IN_NONBLOCK
3098 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4411 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3099 if (fd >= 0) 4412 if (fd >= 0)
3100 return fd; 4413 return fd;
3101#endif 4414#endif
3102 return inotify_init (); 4415 return inotify_init ();
… …
3143 ev_io_set (&fs_w, fs_fd, EV_READ); 4456 ev_io_set (&fs_w, fs_fd, EV_READ);
3144 ev_io_start (EV_A_ &fs_w); 4457 ev_io_start (EV_A_ &fs_w);
3145 ev_unref (EV_A); 4458 ev_unref (EV_A);
3146 } 4459 }
3147 4460
3148 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4461 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3149 { 4462 {
3150 WL w_ = fs_hash [slot].head; 4463 WL w_ = fs_hash [slot].head;
3151 fs_hash [slot].head = 0; 4464 fs_hash [slot].head = 0;
3152 4465
3153 while (w_) 4466 while (w_)
… …
3177#else 4490#else
3178# define EV_LSTAT(p,b) lstat (p, b) 4491# define EV_LSTAT(p,b) lstat (p, b)
3179#endif 4492#endif
3180 4493
3181void 4494void
3182ev_stat_stat (EV_P_ ev_stat *w) 4495ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3183{ 4496{
3184 if (lstat (w->path, &w->attr) < 0) 4497 if (lstat (w->path, &w->attr) < 0)
3185 w->attr.st_nlink = 0; 4498 w->attr.st_nlink = 0;
3186 else if (!w->attr.st_nlink) 4499 else if (!w->attr.st_nlink)
3187 w->attr.st_nlink = 1; 4500 w->attr.st_nlink = 1;
3188} 4501}
3189 4502
3190static void noinline 4503noinline
4504static void
3191stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4505stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3192{ 4506{
3193 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3194 4508
3195 ev_statdata prev = w->attr; 4509 ev_statdata prev = w->attr;
… …
3226 ev_feed_event (EV_A_ w, EV_STAT); 4540 ev_feed_event (EV_A_ w, EV_STAT);
3227 } 4541 }
3228} 4542}
3229 4543
3230void 4544void
3231ev_stat_start (EV_P_ ev_stat *w) 4545ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3232{ 4546{
3233 if (expect_false (ev_is_active (w))) 4547 if (expect_false (ev_is_active (w)))
3234 return; 4548 return;
3235 4549
3236 ev_stat_stat (EV_A_ w); 4550 ev_stat_stat (EV_A_ w);
… …
3257 4571
3258 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
3259} 4573}
3260 4574
3261void 4575void
3262ev_stat_stop (EV_P_ ev_stat *w) 4576ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3263{ 4577{
3264 clear_pending (EV_A_ (W)w); 4578 clear_pending (EV_A_ (W)w);
3265 if (expect_false (!ev_is_active (w))) 4579 if (expect_false (!ev_is_active (w)))
3266 return; 4580 return;
3267 4581
… …
3283} 4597}
3284#endif 4598#endif
3285 4599
3286#if EV_IDLE_ENABLE 4600#if EV_IDLE_ENABLE
3287void 4601void
3288ev_idle_start (EV_P_ ev_idle *w) 4602ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3289{ 4603{
3290 if (expect_false (ev_is_active (w))) 4604 if (expect_false (ev_is_active (w)))
3291 return; 4605 return;
3292 4606
3293 pri_adjust (EV_A_ (W)w); 4607 pri_adjust (EV_A_ (W)w);
… …
3306 4620
3307 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
3308} 4622}
3309 4623
3310void 4624void
3311ev_idle_stop (EV_P_ ev_idle *w) 4625ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3312{ 4626{
3313 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
3314 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
3315 return; 4629 return;
3316 4630
… …
3330} 4644}
3331#endif 4645#endif
3332 4646
3333#if EV_PREPARE_ENABLE 4647#if EV_PREPARE_ENABLE
3334void 4648void
3335ev_prepare_start (EV_P_ ev_prepare *w) 4649ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3336{ 4650{
3337 if (expect_false (ev_is_active (w))) 4651 if (expect_false (ev_is_active (w)))
3338 return; 4652 return;
3339 4653
3340 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
… …
3345 4659
3346 EV_FREQUENT_CHECK; 4660 EV_FREQUENT_CHECK;
3347} 4661}
3348 4662
3349void 4663void
3350ev_prepare_stop (EV_P_ ev_prepare *w) 4664ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3351{ 4665{
3352 clear_pending (EV_A_ (W)w); 4666 clear_pending (EV_A_ (W)w);
3353 if (expect_false (!ev_is_active (w))) 4667 if (expect_false (!ev_is_active (w)))
3354 return; 4668 return;
3355 4669
… …
3368} 4682}
3369#endif 4683#endif
3370 4684
3371#if EV_CHECK_ENABLE 4685#if EV_CHECK_ENABLE
3372void 4686void
3373ev_check_start (EV_P_ ev_check *w) 4687ev_check_start (EV_P_ ev_check *w) EV_THROW
3374{ 4688{
3375 if (expect_false (ev_is_active (w))) 4689 if (expect_false (ev_is_active (w)))
3376 return; 4690 return;
3377 4691
3378 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
… …
3383 4697
3384 EV_FREQUENT_CHECK; 4698 EV_FREQUENT_CHECK;
3385} 4699}
3386 4700
3387void 4701void
3388ev_check_stop (EV_P_ ev_check *w) 4702ev_check_stop (EV_P_ ev_check *w) EV_THROW
3389{ 4703{
3390 clear_pending (EV_A_ (W)w); 4704 clear_pending (EV_A_ (W)w);
3391 if (expect_false (!ev_is_active (w))) 4705 if (expect_false (!ev_is_active (w)))
3392 return; 4706 return;
3393 4707
… …
3405 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
3406} 4720}
3407#endif 4721#endif
3408 4722
3409#if EV_EMBED_ENABLE 4723#if EV_EMBED_ENABLE
3410void noinline 4724noinline
4725void
3411ev_embed_sweep (EV_P_ ev_embed *w) 4726ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3412{ 4727{
3413 ev_loop (w->other, EVLOOP_NONBLOCK); 4728 ev_run (w->other, EVRUN_NOWAIT);
3414} 4729}
3415 4730
3416static void 4731static void
3417embed_io_cb (EV_P_ ev_io *io, int revents) 4732embed_io_cb (EV_P_ ev_io *io, int revents)
3418{ 4733{
3419 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4734 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3420 4735
3421 if (ev_cb (w)) 4736 if (ev_cb (w))
3422 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4737 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3423 else 4738 else
3424 ev_loop (w->other, EVLOOP_NONBLOCK); 4739 ev_run (w->other, EVRUN_NOWAIT);
3425} 4740}
3426 4741
3427static void 4742static void
3428embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4743embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3429{ 4744{
… …
3433 EV_P = w->other; 4748 EV_P = w->other;
3434 4749
3435 while (fdchangecnt) 4750 while (fdchangecnt)
3436 { 4751 {
3437 fd_reify (EV_A); 4752 fd_reify (EV_A);
3438 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4753 ev_run (EV_A_ EVRUN_NOWAIT);
3439 } 4754 }
3440 } 4755 }
3441} 4756}
3442 4757
3443static void 4758static void
… …
3449 4764
3450 { 4765 {
3451 EV_P = w->other; 4766 EV_P = w->other;
3452 4767
3453 ev_loop_fork (EV_A); 4768 ev_loop_fork (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4769 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4770 }
3456 4771
3457 ev_embed_start (EV_A_ w); 4772 ev_embed_start (EV_A_ w);
3458} 4773}
3459 4774
… …
3464 ev_idle_stop (EV_A_ idle); 4779 ev_idle_stop (EV_A_ idle);
3465} 4780}
3466#endif 4781#endif
3467 4782
3468void 4783void
3469ev_embed_start (EV_P_ ev_embed *w) 4784ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3470{ 4785{
3471 if (expect_false (ev_is_active (w))) 4786 if (expect_false (ev_is_active (w)))
3472 return; 4787 return;
3473 4788
3474 { 4789 {
… …
3495 4810
3496 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
3497} 4812}
3498 4813
3499void 4814void
3500ev_embed_stop (EV_P_ ev_embed *w) 4815ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3501{ 4816{
3502 clear_pending (EV_A_ (W)w); 4817 clear_pending (EV_A_ (W)w);
3503 if (expect_false (!ev_is_active (w))) 4818 if (expect_false (!ev_is_active (w)))
3504 return; 4819 return;
3505 4820
… …
3515} 4830}
3516#endif 4831#endif
3517 4832
3518#if EV_FORK_ENABLE 4833#if EV_FORK_ENABLE
3519void 4834void
3520ev_fork_start (EV_P_ ev_fork *w) 4835ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3521{ 4836{
3522 if (expect_false (ev_is_active (w))) 4837 if (expect_false (ev_is_active (w)))
3523 return; 4838 return;
3524 4839
3525 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
… …
3530 4845
3531 EV_FREQUENT_CHECK; 4846 EV_FREQUENT_CHECK;
3532} 4847}
3533 4848
3534void 4849void
3535ev_fork_stop (EV_P_ ev_fork *w) 4850ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3536{ 4851{
3537 clear_pending (EV_A_ (W)w); 4852 clear_pending (EV_A_ (W)w);
3538 if (expect_false (!ev_is_active (w))) 4853 if (expect_false (!ev_is_active (w)))
3539 return; 4854 return;
3540 4855
… …
3551 4866
3552 EV_FREQUENT_CHECK; 4867 EV_FREQUENT_CHECK;
3553} 4868}
3554#endif 4869#endif
3555 4870
3556#if EV_ASYNC_ENABLE 4871#if EV_CLEANUP_ENABLE
3557void 4872void
3558ev_async_start (EV_P_ ev_async *w) 4873ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3559{ 4874{
3560 if (expect_false (ev_is_active (w))) 4875 if (expect_false (ev_is_active (w)))
3561 return; 4876 return;
4877
4878 EV_FREQUENT_CHECK;
4879
4880 ev_start (EV_A_ (W)w, ++cleanupcnt);
4881 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4882 cleanups [cleanupcnt - 1] = w;
4883
4884 /* cleanup watchers should never keep a refcount on the loop */
4885 ev_unref (EV_A);
4886 EV_FREQUENT_CHECK;
4887}
4888
4889void
4890ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4891{
4892 clear_pending (EV_A_ (W)w);
4893 if (expect_false (!ev_is_active (w)))
4894 return;
4895
4896 EV_FREQUENT_CHECK;
4897 ev_ref (EV_A);
4898
4899 {
4900 int active = ev_active (w);
4901
4902 cleanups [active - 1] = cleanups [--cleanupcnt];
4903 ev_active (cleanups [active - 1]) = active;
4904 }
4905
4906 ev_stop (EV_A_ (W)w);
4907
4908 EV_FREQUENT_CHECK;
4909}
4910#endif
4911
4912#if EV_ASYNC_ENABLE
4913void
4914ev_async_start (EV_P_ ev_async *w) EV_THROW
4915{
4916 if (expect_false (ev_is_active (w)))
4917 return;
4918
4919 w->sent = 0;
3562 4920
3563 evpipe_init (EV_A); 4921 evpipe_init (EV_A);
3564 4922
3565 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3566 4924
… …
3570 4928
3571 EV_FREQUENT_CHECK; 4929 EV_FREQUENT_CHECK;
3572} 4930}
3573 4931
3574void 4932void
3575ev_async_stop (EV_P_ ev_async *w) 4933ev_async_stop (EV_P_ ev_async *w) EV_THROW
3576{ 4934{
3577 clear_pending (EV_A_ (W)w); 4935 clear_pending (EV_A_ (W)w);
3578 if (expect_false (!ev_is_active (w))) 4936 if (expect_false (!ev_is_active (w)))
3579 return; 4937 return;
3580 4938
… …
3591 4949
3592 EV_FREQUENT_CHECK; 4950 EV_FREQUENT_CHECK;
3593} 4951}
3594 4952
3595void 4953void
3596ev_async_send (EV_P_ ev_async *w) 4954ev_async_send (EV_P_ ev_async *w) EV_THROW
3597{ 4955{
3598 w->sent = 1; 4956 w->sent = 1;
3599 evpipe_write (EV_A_ &async_pending); 4957 evpipe_write (EV_A_ &async_pending);
3600} 4958}
3601#endif 4959#endif
… …
3638 4996
3639 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4997 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3640} 4998}
3641 4999
3642void 5000void
3643ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5001ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3644{ 5002{
3645 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5003 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3646 5004
3647 if (expect_false (!once)) 5005 if (expect_false (!once))
3648 { 5006 {
3649 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 5007 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3650 return; 5008 return;
3651 } 5009 }
3652 5010
3653 once->cb = cb; 5011 once->cb = cb;
3654 once->arg = arg; 5012 once->arg = arg;
… …
3669} 5027}
3670 5028
3671/*****************************************************************************/ 5029/*****************************************************************************/
3672 5030
3673#if EV_WALK_ENABLE 5031#if EV_WALK_ENABLE
5032ecb_cold
3674void 5033void
3675ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5034ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3676{ 5035{
3677 int i, j; 5036 int i, j;
3678 ev_watcher_list *wl, *wn; 5037 ev_watcher_list *wl, *wn;
3679 5038
3680 if (types & (EV_IO | EV_EMBED)) 5039 if (types & (EV_IO | EV_EMBED))
… …
3723 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5082 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3724#endif 5083#endif
3725 5084
3726#if EV_IDLE_ENABLE 5085#if EV_IDLE_ENABLE
3727 if (types & EV_IDLE) 5086 if (types & EV_IDLE)
3728 for (j = NUMPRI; i--; ) 5087 for (j = NUMPRI; j--; )
3729 for (i = idlecnt [j]; i--; ) 5088 for (i = idlecnt [j]; i--; )
3730 cb (EV_A_ EV_IDLE, idles [j][i]); 5089 cb (EV_A_ EV_IDLE, idles [j][i]);
3731#endif 5090#endif
3732 5091
3733#if EV_FORK_ENABLE 5092#if EV_FORK_ENABLE
… …
3769 } 5128 }
3770#endif 5129#endif
3771 5130
3772#if EV_CHILD_ENABLE 5131#if EV_CHILD_ENABLE
3773 if (types & EV_CHILD) 5132 if (types & EV_CHILD)
3774 for (i = EV_PID_HASHSIZE; i--; ) 5133 for (i = (EV_PID_HASHSIZE); i--; )
3775 for (wl = childs [i]; wl; ) 5134 for (wl = childs [i]; wl; )
3776 { 5135 {
3777 wn = wl->next; 5136 wn = wl->next;
3778 cb (EV_A_ EV_CHILD, wl); 5137 cb (EV_A_ EV_CHILD, wl);
3779 wl = wn; 5138 wl = wn;
… …
3786 5145
3787#if EV_MULTIPLICITY 5146#if EV_MULTIPLICITY
3788 #include "ev_wrap.h" 5147 #include "ev_wrap.h"
3789#endif 5148#endif
3790 5149
3791#ifdef __cplusplus
3792}
3793#endif
3794

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