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Comparing libev/ev.c (file contents):
Revision 1.316 by root, Fri Sep 18 21:02:12 2009 UTC vs.
Revision 1.482 by root, Sat Jul 28 04:15:15 2018 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
174#endif 197#endif
175 198
176#ifndef _WIN32 199#ifndef _WIN32
177# include <sys/time.h> 200# include <sys/time.h>
178# include <sys/wait.h> 201# include <sys/wait.h>
179# include <unistd.h> 202# include <unistd.h>
180#else 203#else
181# include <io.h> 204# include <io.h>
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
183# include <windows.h> 207# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
186# endif 210# endif
211# undef EV_AVOID_STDIO
187#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
188 221
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
190 223
191/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 225#if defined EV_NSIG
193/* use what's provided */ 226/* use what's provided */
194#elif defined (NSIG) 227#elif defined NSIG
195# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 229#elif defined _NSIG
197# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 231#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 233#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 237#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 239#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 243#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 245#else
213# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
214/* to make it compile regardless, just remove the above line */ 247#endif
215# define EV_NSIG 65 248
249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
216#endif 251#endif
217 252
218#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
220# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 256# else
222# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
223# endif 258# endif
224#endif 259#endif
225 260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
226#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 272# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 273# else
230# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
231# endif 275# endif
232#endif 276#endif
233 277
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 279# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 280#endif
237 281
238#ifndef EV_USE_NANOSLEEP 282#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 283# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 284# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 285# else
242# define EV_USE_NANOSLEEP 0 286# define EV_USE_NANOSLEEP 0
243# endif 287# endif
244#endif 288#endif
245 289
246#ifndef EV_USE_SELECT 290#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 291# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 292#endif
249 293
250#ifndef EV_USE_POLL 294#ifndef EV_USE_POLL
251# ifdef _WIN32 295# ifdef _WIN32
252# define EV_USE_POLL 0 296# define EV_USE_POLL 0
253# else 297# else
254# define EV_USE_POLL 1 298# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 299# endif
256#endif 300#endif
257 301
258#ifndef EV_USE_EPOLL 302#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 304# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 305# else
262# define EV_USE_EPOLL 0 306# define EV_USE_EPOLL 0
263# endif 307# endif
264#endif 308#endif
265 309
… …
271# define EV_USE_PORT 0 315# define EV_USE_PORT 0
272#endif 316#endif
273 317
274#ifndef EV_USE_INOTIFY 318#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 320# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 321# else
278# define EV_USE_INOTIFY 0 322# define EV_USE_INOTIFY 0
279# endif 323# endif
280#endif 324#endif
281 325
282#ifndef EV_PID_HASHSIZE 326#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 327# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 328#endif
289 329
290#ifndef EV_INOTIFY_HASHSIZE 330#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 331# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 332#endif
297 333
298#ifndef EV_USE_EVENTFD 334#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 335# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 336# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 337# else
302# define EV_USE_EVENTFD 0 338# define EV_USE_EVENTFD 0
303# endif 339# endif
304#endif 340#endif
305 341
306#ifndef EV_USE_SIGNALFD 342#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 343# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 344# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 345# else
310# define EV_USE_SIGNALFD 0 346# define EV_USE_SIGNALFD 0
311# endif 347# endif
312#endif 348#endif
313 349
… …
316# define EV_USE_4HEAP 1 352# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 353# define EV_HEAP_CACHE_AT 1
318#endif 354#endif
319 355
320#ifndef EV_VERIFY 356#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 357# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 358#endif
323 359
324#ifndef EV_USE_4HEAP 360#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 361# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 362#endif
327 363
328#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif
367
368#ifdef __ANDROID__
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
330#endif 382#endif
331 383
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 387# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
340# else 392# else
… …
359# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
361#endif 413#endif
362 414
363#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 418# include <sys/select.h>
366# endif 419# endif
367#endif 420#endif
368 421
369#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 423# include <sys/statfs.h>
372# include <sys/inotify.h> 424# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
377# endif 429# endif
378#endif
379
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif 430#endif
383 431
384#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
385/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
386# include <stdint.h> 434# include <stdint.h>
… …
392# define EFD_CLOEXEC O_CLOEXEC 440# define EFD_CLOEXEC O_CLOEXEC
393# else 441# else
394# define EFD_CLOEXEC 02000000 442# define EFD_CLOEXEC 02000000
395# endif 443# endif
396# endif 444# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags); 445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif 446#endif
405 447
406#if EV_USE_SIGNALFD 448#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h> 450# include <stdint.h>
… …
414# define SFD_CLOEXEC O_CLOEXEC 456# define SFD_CLOEXEC O_CLOEXEC
415# else 457# else
416# define SFD_CLOEXEC 02000000 458# define SFD_CLOEXEC 02000000
417# endif 459# endif
418# endif 460# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags); 461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
423 462
424struct signalfd_siginfo 463struct signalfd_siginfo
425{ 464{
426 uint32_t ssi_signo; 465 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)]; 466 char pad[128 - sizeof (uint32_t)];
428}; 467};
429# ifdef __cplusplus
430}
431# endif 468#endif
432#endif
433
434 469
435/**/ 470/**/
436 471
437#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 473# define EV_FREQUENT_CHECK ev_verify (EV_A)
439#else 474#else
440# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
441#endif 476#endif
442 477
443/* 478/*
444 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
445 * It is added to ev_rt_now when scheduling periodics
446 * to ensure progress, time-wise, even when rounding
447 * errors are against us.
448 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
449 * Better solutions welcome.
450 */ 481 */
451#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
452 484
453#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
454#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
455 487
488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010005
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
456#if __GNUC__ >= 4 546 #if __GNUC__
547 typedef signed long long int64_t;
548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
562#else
563 #include <inttypes.h>
564 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8
566 #else
567 #define ECB_PTRSIZE 4
568 #endif
569#endif
570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
580 #endif
581#endif
582
583/* many compilers define _GNUC_ to some versions but then only implement
584 * what their idiot authors think are the "more important" extensions,
585 * causing enormous grief in return for some better fake benchmark numbers.
586 * or so.
587 * we try to detect these and simply assume they are not gcc - if they have
588 * an issue with that they should have done it right in the first place.
589 */
590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
591 #define ECB_GCC_VERSION(major,minor) 0
592#else
593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
610#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
623
624#if ECB_CPP
625 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END }
628#else
629 #define ECB_EXTERN_C extern
630 #define ECB_EXTERN_C_BEG
631 #define ECB_EXTERN_C_END
632#endif
633
634/*****************************************************************************/
635
636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
638
639#if ECB_NO_THREADS
640 #define ECB_NO_SMP 1
641#endif
642
643#if ECB_NO_SMP
644 #define ECB_MEMORY_FENCE do { } while (0)
645#endif
646
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP
649 #include <builtins.h>
650#endif
651
652#if 1400 <= _MSC_VER
653 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
654#endif
655
656#ifndef ECB_MEMORY_FENCE
657 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
658 #if __i386 || __i386__
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
662 #elif ECB_GCC_AMD64
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
667 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
668 #elif defined __ARM_ARCH_2__ \
669 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
670 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
671 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
672 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
673 || defined __ARM_ARCH_5TEJ__
674 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
675 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
676 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
677 || defined __ARM_ARCH_6T2__
678 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
679 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
680 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
681 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
682 #elif __aarch64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
684 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
686 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
687 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
688 #elif defined __s390__ || defined __s390x__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
690 #elif defined __mips__
691 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
692 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
693 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
694 #elif defined __alpha__
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
696 #elif defined __hppa__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
698 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
699 #elif defined __ia64__
700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
701 #elif defined __m68k__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
703 #elif defined __m88k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
705 #elif defined __sh__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
707 #endif
708 #endif
709#endif
710
711#ifndef ECB_MEMORY_FENCE
712 #if ECB_GCC_VERSION(4,7)
713 /* see comment below (stdatomic.h) about the C11 memory model. */
714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
716 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
717
718 #elif ECB_CLANG_EXTENSION(c_atomic)
719 /* see comment below (stdatomic.h) about the C11 memory model. */
720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
722 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
723
724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
725 #define ECB_MEMORY_FENCE __sync_synchronize ()
726 #elif _MSC_VER >= 1500 /* VC++ 2008 */
727 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
728 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
729 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
730 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
731 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
732 #elif _MSC_VER >= 1400 /* VC++ 2005 */
733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
734 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
735 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
737 #elif defined _WIN32
738 #include <WinNT.h>
739 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
740 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
741 #include <mbarrier.h>
742 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
743 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
744 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
745 #elif __xlC__
746 #define ECB_MEMORY_FENCE __sync ()
747 #endif
748#endif
749
750#ifndef ECB_MEMORY_FENCE
751 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
752 /* we assume that these memory fences work on all variables/all memory accesses, */
753 /* not just C11 atomics and atomic accesses */
754 #include <stdatomic.h>
755 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
756 /* any fence other than seq_cst, which isn't very efficient for us. */
757 /* Why that is, we don't know - either the C11 memory model is quite useless */
758 /* for most usages, or gcc and clang have a bug */
759 /* I *currently* lean towards the latter, and inefficiently implement */
760 /* all three of ecb's fences as a seq_cst fence */
761 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
762 /* for all __atomic_thread_fence's except seq_cst */
763 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
764 #endif
765#endif
766
767#ifndef ECB_MEMORY_FENCE
768 #if !ECB_AVOID_PTHREADS
769 /*
770 * if you get undefined symbol references to pthread_mutex_lock,
771 * or failure to find pthread.h, then you should implement
772 * the ECB_MEMORY_FENCE operations for your cpu/compiler
773 * OR provide pthread.h and link against the posix thread library
774 * of your system.
775 */
776 #include <pthread.h>
777 #define ECB_NEEDS_PTHREADS 1
778 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
779
780 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
781 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
782 #endif
783#endif
784
785#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
786 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
787#endif
788
789#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
791#endif
792
793/*****************************************************************************/
794
795#if ECB_CPP
796 #define ecb_inline static inline
797#elif ECB_GCC_VERSION(2,5)
798 #define ecb_inline static __inline__
799#elif ECB_C99
800 #define ecb_inline static inline
801#else
802 #define ecb_inline static
803#endif
804
805#if ECB_GCC_VERSION(3,3)
806 #define ecb_restrict __restrict__
807#elif ECB_C99
808 #define ecb_restrict restrict
809#else
810 #define ecb_restrict
811#endif
812
813typedef int ecb_bool;
814
815#define ECB_CONCAT_(a, b) a ## b
816#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
817#define ECB_STRINGIFY_(a) # a
818#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
819#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
820
821#define ecb_function_ ecb_inline
822
823#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
824 #define ecb_attribute(attrlist) __attribute__ (attrlist)
825#else
826 #define ecb_attribute(attrlist)
827#endif
828
829#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
830 #define ecb_is_constant(expr) __builtin_constant_p (expr)
831#else
832 /* possible C11 impl for integral types
833 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
834 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
835
836 #define ecb_is_constant(expr) 0
837#endif
838
839#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
457# define expect(expr,value) __builtin_expect ((expr),(value)) 840 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
458# define noinline __attribute__ ((noinline))
459#else 841#else
460# define expect(expr,value) (expr) 842 #define ecb_expect(expr,value) (expr)
461# define noinline
462# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
463# define inline
464# endif 843#endif
465#endif
466 844
845#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
846 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
847#else
848 #define ecb_prefetch(addr,rw,locality)
849#endif
850
851/* no emulation for ecb_decltype */
852#if ECB_CPP11
853 // older implementations might have problems with decltype(x)::type, work around it
854 template<class T> struct ecb_decltype_t { typedef T type; };
855 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
856#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
857 #define ecb_decltype(x) __typeof__ (x)
858#endif
859
860#if _MSC_VER >= 1300
861 #define ecb_deprecated __declspec (deprecated)
862#else
863 #define ecb_deprecated ecb_attribute ((__deprecated__))
864#endif
865
866#if _MSC_VER >= 1500
867 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
868#elif ECB_GCC_VERSION(4,5)
869 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
870#else
871 #define ecb_deprecated_message(msg) ecb_deprecated
872#endif
873
874#if _MSC_VER >= 1400
875 #define ecb_noinline __declspec (noinline)
876#else
877 #define ecb_noinline ecb_attribute ((__noinline__))
878#endif
879
880#define ecb_unused ecb_attribute ((__unused__))
881#define ecb_const ecb_attribute ((__const__))
882#define ecb_pure ecb_attribute ((__pure__))
883
884#if ECB_C11 || __IBMC_NORETURN
885 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
886 #define ecb_noreturn _Noreturn
887#elif ECB_CPP11
888 #define ecb_noreturn [[noreturn]]
889#elif _MSC_VER >= 1200
890 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
891 #define ecb_noreturn __declspec (noreturn)
892#else
893 #define ecb_noreturn ecb_attribute ((__noreturn__))
894#endif
895
896#if ECB_GCC_VERSION(4,3)
897 #define ecb_artificial ecb_attribute ((__artificial__))
898 #define ecb_hot ecb_attribute ((__hot__))
899 #define ecb_cold ecb_attribute ((__cold__))
900#else
901 #define ecb_artificial
902 #define ecb_hot
903 #define ecb_cold
904#endif
905
906/* put around conditional expressions if you are very sure that the */
907/* expression is mostly true or mostly false. note that these return */
908/* booleans, not the expression. */
467#define expect_false(expr) expect ((expr) != 0, 0) 909#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
468#define expect_true(expr) expect ((expr) != 0, 1) 910#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
911/* for compatibility to the rest of the world */
912#define ecb_likely(expr) ecb_expect_true (expr)
913#define ecb_unlikely(expr) ecb_expect_false (expr)
914
915/* count trailing zero bits and count # of one bits */
916#if ECB_GCC_VERSION(3,4) \
917 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
918 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
919 && ECB_CLANG_BUILTIN(__builtin_popcount))
920 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
921 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
922 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
923 #define ecb_ctz32(x) __builtin_ctz (x)
924 #define ecb_ctz64(x) __builtin_ctzll (x)
925 #define ecb_popcount32(x) __builtin_popcount (x)
926 /* no popcountll */
927#else
928 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
929 ecb_function_ ecb_const int
930 ecb_ctz32 (uint32_t x)
931 {
932#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
933 unsigned long r;
934 _BitScanForward (&r, x);
935 return (int)r;
936#else
937 int r = 0;
938
939 x &= ~x + 1; /* this isolates the lowest bit */
940
941#if ECB_branchless_on_i386
942 r += !!(x & 0xaaaaaaaa) << 0;
943 r += !!(x & 0xcccccccc) << 1;
944 r += !!(x & 0xf0f0f0f0) << 2;
945 r += !!(x & 0xff00ff00) << 3;
946 r += !!(x & 0xffff0000) << 4;
947#else
948 if (x & 0xaaaaaaaa) r += 1;
949 if (x & 0xcccccccc) r += 2;
950 if (x & 0xf0f0f0f0) r += 4;
951 if (x & 0xff00ff00) r += 8;
952 if (x & 0xffff0000) r += 16;
953#endif
954
955 return r;
956#endif
957 }
958
959 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
960 ecb_function_ ecb_const int
961 ecb_ctz64 (uint64_t x)
962 {
963#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
964 unsigned long r;
965 _BitScanForward64 (&r, x);
966 return (int)r;
967#else
968 int shift = x & 0xffffffff ? 0 : 32;
969 return ecb_ctz32 (x >> shift) + shift;
970#endif
971 }
972
973 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
974 ecb_function_ ecb_const int
975 ecb_popcount32 (uint32_t x)
976 {
977 x -= (x >> 1) & 0x55555555;
978 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
979 x = ((x >> 4) + x) & 0x0f0f0f0f;
980 x *= 0x01010101;
981
982 return x >> 24;
983 }
984
985 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
986 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
987 {
988#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
989 unsigned long r;
990 _BitScanReverse (&r, x);
991 return (int)r;
992#else
993 int r = 0;
994
995 if (x >> 16) { x >>= 16; r += 16; }
996 if (x >> 8) { x >>= 8; r += 8; }
997 if (x >> 4) { x >>= 4; r += 4; }
998 if (x >> 2) { x >>= 2; r += 2; }
999 if (x >> 1) { r += 1; }
1000
1001 return r;
1002#endif
1003 }
1004
1005 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1006 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1007 {
1008#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1009 unsigned long r;
1010 _BitScanReverse64 (&r, x);
1011 return (int)r;
1012#else
1013 int r = 0;
1014
1015 if (x >> 32) { x >>= 32; r += 32; }
1016
1017 return r + ecb_ld32 (x);
1018#endif
1019 }
1020#endif
1021
1022ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1023ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1024ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1026
1027ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1028ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1029{
1030 return ( (x * 0x0802U & 0x22110U)
1031 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1032}
1033
1034ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1035ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1036{
1037 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1038 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1039 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1040 x = ( x >> 8 ) | ( x << 8);
1041
1042 return x;
1043}
1044
1045ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1046ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1047{
1048 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1049 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1050 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1051 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1052 x = ( x >> 16 ) | ( x << 16);
1053
1054 return x;
1055}
1056
1057/* popcount64 is only available on 64 bit cpus as gcc builtin */
1058/* so for this version we are lazy */
1059ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1060ecb_function_ ecb_const int
1061ecb_popcount64 (uint64_t x)
1062{
1063 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1064}
1065
1066ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1067ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1068ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1069ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1070ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1071ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1072ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1073ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1074
1075ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1076ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1077ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1078ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1079ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1080ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1081ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1082ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1083
1084#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1085 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1086 #define ecb_bswap16(x) __builtin_bswap16 (x)
1087 #else
1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1089 #endif
1090 #define ecb_bswap32(x) __builtin_bswap32 (x)
1091 #define ecb_bswap64(x) __builtin_bswap64 (x)
1092#elif _MSC_VER
1093 #include <stdlib.h>
1094 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1095 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1096 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1097#else
1098 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1099 ecb_function_ ecb_const uint16_t
1100 ecb_bswap16 (uint16_t x)
1101 {
1102 return ecb_rotl16 (x, 8);
1103 }
1104
1105 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1106 ecb_function_ ecb_const uint32_t
1107 ecb_bswap32 (uint32_t x)
1108 {
1109 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1110 }
1111
1112 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1113 ecb_function_ ecb_const uint64_t
1114 ecb_bswap64 (uint64_t x)
1115 {
1116 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1117 }
1118#endif
1119
1120#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1121 #define ecb_unreachable() __builtin_unreachable ()
1122#else
1123 /* this seems to work fine, but gcc always emits a warning for it :/ */
1124 ecb_inline ecb_noreturn void ecb_unreachable (void);
1125 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1126#endif
1127
1128/* try to tell the compiler that some condition is definitely true */
1129#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1130
1131ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1132ecb_inline ecb_const uint32_t
1133ecb_byteorder_helper (void)
1134{
1135 /* the union code still generates code under pressure in gcc, */
1136 /* but less than using pointers, and always seems to */
1137 /* successfully return a constant. */
1138 /* the reason why we have this horrible preprocessor mess */
1139 /* is to avoid it in all cases, at least on common architectures */
1140 /* or when using a recent enough gcc version (>= 4.6) */
1141#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1142 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1143 #define ECB_LITTLE_ENDIAN 1
1144 return 0x44332211;
1145#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1146 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1147 #define ECB_BIG_ENDIAN 1
1148 return 0x11223344;
1149#else
1150 union
1151 {
1152 uint8_t c[4];
1153 uint32_t u;
1154 } u = { 0x11, 0x22, 0x33, 0x44 };
1155 return u.u;
1156#endif
1157}
1158
1159ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1160ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1161ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1162ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1163
1164#if ECB_GCC_VERSION(3,0) || ECB_C99
1165 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1166#else
1167 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1168#endif
1169
1170#if ECB_CPP
1171 template<typename T>
1172 static inline T ecb_div_rd (T val, T div)
1173 {
1174 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1175 }
1176 template<typename T>
1177 static inline T ecb_div_ru (T val, T div)
1178 {
1179 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1180 }
1181#else
1182 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1183 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1184#endif
1185
1186#if ecb_cplusplus_does_not_suck
1187 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1188 template<typename T, int N>
1189 static inline int ecb_array_length (const T (&arr)[N])
1190 {
1191 return N;
1192 }
1193#else
1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1195#endif
1196
1197ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1198ecb_function_ ecb_const uint32_t
1199ecb_binary16_to_binary32 (uint32_t x)
1200{
1201 unsigned int s = (x & 0x8000) << (31 - 15);
1202 int e = (x >> 10) & 0x001f;
1203 unsigned int m = x & 0x03ff;
1204
1205 if (ecb_expect_false (e == 31))
1206 /* infinity or NaN */
1207 e = 255 - (127 - 15);
1208 else if (ecb_expect_false (!e))
1209 {
1210 if (ecb_expect_true (!m))
1211 /* zero, handled by code below by forcing e to 0 */
1212 e = 0 - (127 - 15);
1213 else
1214 {
1215 /* subnormal, renormalise */
1216 unsigned int s = 10 - ecb_ld32 (m);
1217
1218 m = (m << s) & 0x3ff; /* mask implicit bit */
1219 e -= s - 1;
1220 }
1221 }
1222
1223 /* e and m now are normalised, or zero, (or inf or nan) */
1224 e += 127 - 15;
1225
1226 return s | (e << 23) | (m << (23 - 10));
1227}
1228
1229ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1230ecb_function_ ecb_const uint16_t
1231ecb_binary32_to_binary16 (uint32_t x)
1232{
1233 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1234 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1235 unsigned int m = x & 0x007fffff;
1236
1237 x &= 0x7fffffff;
1238
1239 /* if it's within range of binary16 normals, use fast path */
1240 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1241 {
1242 /* mantissa round-to-even */
1243 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1244
1245 /* handle overflow */
1246 if (ecb_expect_false (m >= 0x00800000))
1247 {
1248 m >>= 1;
1249 e += 1;
1250 }
1251
1252 return s | (e << 10) | (m >> (23 - 10));
1253 }
1254
1255 /* handle large numbers and infinity */
1256 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1257 return s | 0x7c00;
1258
1259 /* handle zero, subnormals and small numbers */
1260 if (ecb_expect_true (x < 0x38800000))
1261 {
1262 /* zero */
1263 if (ecb_expect_true (!x))
1264 return s;
1265
1266 /* handle subnormals */
1267
1268 /* too small, will be zero */
1269 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1270 return s;
1271
1272 m |= 0x00800000; /* make implicit bit explicit */
1273
1274 /* very tricky - we need to round to the nearest e (+10) bit value */
1275 {
1276 unsigned int bits = 14 - e;
1277 unsigned int half = (1 << (bits - 1)) - 1;
1278 unsigned int even = (m >> bits) & 1;
1279
1280 /* if this overflows, we will end up with a normalised number */
1281 m = (m + half + even) >> bits;
1282 }
1283
1284 return s | m;
1285 }
1286
1287 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1288 m >>= 13;
1289
1290 return s | 0x7c00 | m | !m;
1291}
1292
1293/*******************************************************************************/
1294/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1295
1296/* basically, everything uses "ieee pure-endian" floating point numbers */
1297/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1298#if 0 \
1299 || __i386 || __i386__ \
1300 || ECB_GCC_AMD64 \
1301 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1302 || defined __s390__ || defined __s390x__ \
1303 || defined __mips__ \
1304 || defined __alpha__ \
1305 || defined __hppa__ \
1306 || defined __ia64__ \
1307 || defined __m68k__ \
1308 || defined __m88k__ \
1309 || defined __sh__ \
1310 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1311 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1312 || defined __aarch64__
1313 #define ECB_STDFP 1
1314 #include <string.h> /* for memcpy */
1315#else
1316 #define ECB_STDFP 0
1317#endif
1318
1319#ifndef ECB_NO_LIBM
1320
1321 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1322
1323 /* only the oldest of old doesn't have this one. solaris. */
1324 #ifdef INFINITY
1325 #define ECB_INFINITY INFINITY
1326 #else
1327 #define ECB_INFINITY HUGE_VAL
1328 #endif
1329
1330 #ifdef NAN
1331 #define ECB_NAN NAN
1332 #else
1333 #define ECB_NAN ECB_INFINITY
1334 #endif
1335
1336 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1337 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1338 #define ecb_frexpf(x,e) frexpf ((x), (e))
1339 #else
1340 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1341 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1342 #endif
1343
1344 /* convert a float to ieee single/binary32 */
1345 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1346 ecb_function_ ecb_const uint32_t
1347 ecb_float_to_binary32 (float x)
1348 {
1349 uint32_t r;
1350
1351 #if ECB_STDFP
1352 memcpy (&r, &x, 4);
1353 #else
1354 /* slow emulation, works for anything but -0 */
1355 uint32_t m;
1356 int e;
1357
1358 if (x == 0e0f ) return 0x00000000U;
1359 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1360 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1361 if (x != x ) return 0x7fbfffffU;
1362
1363 m = ecb_frexpf (x, &e) * 0x1000000U;
1364
1365 r = m & 0x80000000U;
1366
1367 if (r)
1368 m = -m;
1369
1370 if (e <= -126)
1371 {
1372 m &= 0xffffffU;
1373 m >>= (-125 - e);
1374 e = -126;
1375 }
1376
1377 r |= (e + 126) << 23;
1378 r |= m & 0x7fffffU;
1379 #endif
1380
1381 return r;
1382 }
1383
1384 /* converts an ieee single/binary32 to a float */
1385 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1386 ecb_function_ ecb_const float
1387 ecb_binary32_to_float (uint32_t x)
1388 {
1389 float r;
1390
1391 #if ECB_STDFP
1392 memcpy (&r, &x, 4);
1393 #else
1394 /* emulation, only works for normals and subnormals and +0 */
1395 int neg = x >> 31;
1396 int e = (x >> 23) & 0xffU;
1397
1398 x &= 0x7fffffU;
1399
1400 if (e)
1401 x |= 0x800000U;
1402 else
1403 e = 1;
1404
1405 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1406 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1407
1408 r = neg ? -r : r;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* convert a double to ieee double/binary64 */
1415 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1416 ecb_function_ ecb_const uint64_t
1417 ecb_double_to_binary64 (double x)
1418 {
1419 uint64_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 8);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint64_t m;
1426 int e;
1427
1428 if (x == 0e0 ) return 0x0000000000000000U;
1429 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1430 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1431 if (x != x ) return 0X7ff7ffffffffffffU;
1432
1433 m = frexp (x, &e) * 0x20000000000000U;
1434
1435 r = m & 0x8000000000000000;;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -1022)
1441 {
1442 m &= 0x1fffffffffffffU;
1443 m >>= (-1021 - e);
1444 e = -1022;
1445 }
1446
1447 r |= ((uint64_t)(e + 1022)) << 52;
1448 r |= m & 0xfffffffffffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee double/binary64 to a double */
1455 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1456 ecb_function_ ecb_const double
1457 ecb_binary64_to_double (uint64_t x)
1458 {
1459 double r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 8);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 63;
1466 int e = (x >> 52) & 0x7ffU;
1467
1468 x &= 0xfffffffffffffU;
1469
1470 if (e)
1471 x |= 0x10000000000000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1476 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a float to ieee half/binary16 */
1485 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1486 ecb_function_ ecb_const uint16_t
1487 ecb_float_to_binary16 (float x)
1488 {
1489 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1490 }
1491
1492 /* convert an ieee half/binary16 to float */
1493 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1494 ecb_function_ ecb_const float
1495 ecb_binary16_to_float (uint16_t x)
1496 {
1497 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1498 }
1499
1500#endif
1501
1502#endif
1503
1504/* ECB.H END */
1505
1506#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1507/* if your architecture doesn't need memory fences, e.g. because it is
1508 * single-cpu/core, or if you use libev in a project that doesn't use libev
1509 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1510 * libev, in which cases the memory fences become nops.
1511 * alternatively, you can remove this #error and link against libpthread,
1512 * which will then provide the memory fences.
1513 */
1514# error "memory fences not defined for your architecture, please report"
1515#endif
1516
1517#ifndef ECB_MEMORY_FENCE
1518# define ECB_MEMORY_FENCE do { } while (0)
1519# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1521#endif
1522
1523#define expect_false(cond) ecb_expect_false (cond)
1524#define expect_true(cond) ecb_expect_true (cond)
1525#define noinline ecb_noinline
1526
469#define inline_size static inline 1527#define inline_size ecb_inline
470 1528
471#if EV_MINIMAL 1529#if EV_FEATURE_CODE
472# define inline_speed static noinline
473#else
474# define inline_speed static inline 1530# define inline_speed ecb_inline
1531#else
1532# define inline_speed noinline static
475#endif 1533#endif
476 1534
477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478 1536
479#if EV_MINPRI == EV_MAXPRI 1537#if EV_MINPRI == EV_MAXPRI
… …
492#define ev_active(w) ((W)(w))->active 1550#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at 1551#define ev_at(w) ((WT)(w))->at
494 1552
495#if EV_USE_REALTIME 1553#if EV_USE_REALTIME
496/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1554/* sig_atomic_t is used to avoid per-thread variables or locking but still */
497/* giving it a reasonably high chance of working on typical architetcures */ 1555/* giving it a reasonably high chance of working on typical architectures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1556static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif 1557#endif
500 1558
501#if EV_USE_MONOTONIC 1559#if EV_USE_MONOTONIC
502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1560static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
504 1562
505#ifndef EV_FD_TO_WIN32_HANDLE 1563#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 1564# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 1565#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 1566#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1567# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 1568#endif
511#ifndef EV_WIN32_CLOSE_FD 1569#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 1570# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 1571#endif
514 1572
… …
516# include "ev_win32.c" 1574# include "ev_win32.c"
517#endif 1575#endif
518 1576
519/*****************************************************************************/ 1577/*****************************************************************************/
520 1578
1579/* define a suitable floor function (only used by periodics atm) */
1580
1581#if EV_USE_FLOOR
1582# include <math.h>
1583# define ev_floor(v) floor (v)
1584#else
1585
1586#include <float.h>
1587
1588/* a floor() replacement function, should be independent of ev_tstamp type */
1589noinline
1590static ev_tstamp
1591ev_floor (ev_tstamp v)
1592{
1593 /* the choice of shift factor is not terribly important */
1594#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1595 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1596#else
1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1598#endif
1599
1600 /* argument too large for an unsigned long? */
1601 if (expect_false (v >= shift))
1602 {
1603 ev_tstamp f;
1604
1605 if (v == v - 1.)
1606 return v; /* very large number */
1607
1608 f = shift * ev_floor (v * (1. / shift));
1609 return f + ev_floor (v - f);
1610 }
1611
1612 /* special treatment for negative args? */
1613 if (expect_false (v < 0.))
1614 {
1615 ev_tstamp f = -ev_floor (-v);
1616
1617 return f - (f == v ? 0 : 1);
1618 }
1619
1620 /* fits into an unsigned long */
1621 return (unsigned long)v;
1622}
1623
1624#endif
1625
1626/*****************************************************************************/
1627
1628#ifdef __linux
1629# include <sys/utsname.h>
1630#endif
1631
1632noinline ecb_cold
1633static unsigned int
1634ev_linux_version (void)
1635{
1636#ifdef __linux
1637 unsigned int v = 0;
1638 struct utsname buf;
1639 int i;
1640 char *p = buf.release;
1641
1642 if (uname (&buf))
1643 return 0;
1644
1645 for (i = 3+1; --i; )
1646 {
1647 unsigned int c = 0;
1648
1649 for (;;)
1650 {
1651 if (*p >= '0' && *p <= '9')
1652 c = c * 10 + *p++ - '0';
1653 else
1654 {
1655 p += *p == '.';
1656 break;
1657 }
1658 }
1659
1660 v = (v << 8) | c;
1661 }
1662
1663 return v;
1664#else
1665 return 0;
1666#endif
1667}
1668
1669/*****************************************************************************/
1670
1671#if EV_AVOID_STDIO
1672noinline ecb_cold
1673static void
1674ev_printerr (const char *msg)
1675{
1676 write (STDERR_FILENO, msg, strlen (msg));
1677}
1678#endif
1679
521static void (*syserr_cb)(const char *msg); 1680static void (*syserr_cb)(const char *msg) EV_THROW;
522 1681
1682ecb_cold
523void 1683void
524ev_set_syserr_cb (void (*cb)(const char *msg)) 1684ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
525{ 1685{
526 syserr_cb = cb; 1686 syserr_cb = cb;
527} 1687}
528 1688
529static void noinline 1689noinline ecb_cold
1690static void
530ev_syserr (const char *msg) 1691ev_syserr (const char *msg)
531{ 1692{
532 if (!msg) 1693 if (!msg)
533 msg = "(libev) system error"; 1694 msg = "(libev) system error";
534 1695
535 if (syserr_cb) 1696 if (syserr_cb)
536 syserr_cb (msg); 1697 syserr_cb (msg);
537 else 1698 else
538 { 1699 {
1700#if EV_AVOID_STDIO
1701 ev_printerr (msg);
1702 ev_printerr (": ");
1703 ev_printerr (strerror (errno));
1704 ev_printerr ("\n");
1705#else
539 perror (msg); 1706 perror (msg);
1707#endif
540 abort (); 1708 abort ();
541 } 1709 }
542} 1710}
543 1711
544static void * 1712static void *
545ev_realloc_emul (void *ptr, long size) 1713ev_realloc_emul (void *ptr, long size) EV_THROW
546{ 1714{
547 /* some systems, notably openbsd and darwin, fail to properly 1715 /* some systems, notably openbsd and darwin, fail to properly
548 * implement realloc (x, 0) (as required by both ansi c-98 and 1716 * implement realloc (x, 0) (as required by both ansi c-89 and
549 * the single unix specification, so work around them here. 1717 * the single unix specification, so work around them here.
1718 * recently, also (at least) fedora and debian started breaking it,
1719 * despite documenting it otherwise.
550 */ 1720 */
551 1721
552 if (size) 1722 if (size)
553 return realloc (ptr, size); 1723 return realloc (ptr, size);
554 1724
555 free (ptr); 1725 free (ptr);
556 return 0; 1726 return 0;
557} 1727}
558 1728
559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1729static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
560 1730
1731ecb_cold
561void 1732void
562ev_set_allocator (void *(*cb)(void *ptr, long size)) 1733ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
563{ 1734{
564 alloc = cb; 1735 alloc = cb;
565} 1736}
566 1737
567inline_speed void * 1738inline_speed void *
… …
569{ 1740{
570 ptr = alloc (ptr, size); 1741 ptr = alloc (ptr, size);
571 1742
572 if (!ptr && size) 1743 if (!ptr && size)
573 { 1744 {
1745#if EV_AVOID_STDIO
1746 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1747#else
574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1748 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1749#endif
575 abort (); 1750 abort ();
576 } 1751 }
577 1752
578 return ptr; 1753 return ptr;
579} 1754}
… …
595 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1770 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
596 unsigned char unused; 1771 unsigned char unused;
597#if EV_USE_EPOLL 1772#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */ 1773 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif 1774#endif
600#if EV_SELECT_IS_WINSOCKET 1775#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
601 SOCKET handle; 1776 SOCKET handle;
1777#endif
1778#if EV_USE_IOCP
1779 OVERLAPPED or, ow;
602#endif 1780#endif
603} ANFD; 1781} ANFD;
604 1782
605/* stores the pending event set for a given watcher */ 1783/* stores the pending event set for a given watcher */
606typedef struct 1784typedef struct
… …
648 #undef VAR 1826 #undef VAR
649 }; 1827 };
650 #include "ev_wrap.h" 1828 #include "ev_wrap.h"
651 1829
652 static struct ev_loop default_loop_struct; 1830 static struct ev_loop default_loop_struct;
653 struct ev_loop *ev_default_loop_ptr; 1831 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
654 1832
655#else 1833#else
656 1834
657 ev_tstamp ev_rt_now; 1835 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
658 #define VAR(name,decl) static decl; 1836 #define VAR(name,decl) static decl;
659 #include "ev_vars.h" 1837 #include "ev_vars.h"
660 #undef VAR 1838 #undef VAR
661 1839
662 static int ev_default_loop_ptr; 1840 static int ev_default_loop_ptr;
663 1841
664#endif 1842#endif
665 1843
666#if EV_MINIMAL < 2 1844#if EV_FEATURE_API
667# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1845# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
668# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1846# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
669# define EV_INVOKE_PENDING invoke_cb (EV_A) 1847# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else 1848#else
671# define EV_RELEASE_CB (void)0 1849# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0 1850# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1851# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif 1852#endif
675 1853
676#define EVUNLOOP_RECURSE 0x80 1854#define EVBREAK_RECURSE 0x80
677 1855
678/*****************************************************************************/ 1856/*****************************************************************************/
679 1857
680#ifndef EV_HAVE_EV_TIME 1858#ifndef EV_HAVE_EV_TIME
681ev_tstamp 1859ev_tstamp
682ev_time (void) 1860ev_time (void) EV_THROW
683{ 1861{
684#if EV_USE_REALTIME 1862#if EV_USE_REALTIME
685 if (expect_true (have_realtime)) 1863 if (expect_true (have_realtime))
686 { 1864 {
687 struct timespec ts; 1865 struct timespec ts;
… …
711 return ev_time (); 1889 return ev_time ();
712} 1890}
713 1891
714#if EV_MULTIPLICITY 1892#if EV_MULTIPLICITY
715ev_tstamp 1893ev_tstamp
716ev_now (EV_P) 1894ev_now (EV_P) EV_THROW
717{ 1895{
718 return ev_rt_now; 1896 return ev_rt_now;
719} 1897}
720#endif 1898#endif
721 1899
722void 1900void
723ev_sleep (ev_tstamp delay) 1901ev_sleep (ev_tstamp delay) EV_THROW
724{ 1902{
725 if (delay > 0.) 1903 if (delay > 0.)
726 { 1904 {
727#if EV_USE_NANOSLEEP 1905#if EV_USE_NANOSLEEP
728 struct timespec ts; 1906 struct timespec ts;
729 1907
730 ts.tv_sec = (time_t)delay; 1908 EV_TS_SET (ts, delay);
731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
732
733 nanosleep (&ts, 0); 1909 nanosleep (&ts, 0);
734#elif defined(_WIN32) 1910#elif defined _WIN32
1911 /* maybe this should round up, as ms is very low resolution */
1912 /* compared to select (µs) or nanosleep (ns) */
735 Sleep ((unsigned long)(delay * 1e3)); 1913 Sleep ((unsigned long)(delay * 1e3));
736#else 1914#else
737 struct timeval tv; 1915 struct timeval tv;
738
739 tv.tv_sec = (time_t)delay;
740 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
741 1916
742 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1917 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
743 /* something not guaranteed by newer posix versions, but guaranteed */ 1918 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */ 1919 /* by older ones */
1920 EV_TV_SET (tv, delay);
745 select (0, 0, 0, 0, &tv); 1921 select (0, 0, 0, 0, &tv);
746#endif 1922#endif
747 } 1923 }
748} 1924}
749 1925
750/*****************************************************************************/ 1926/*****************************************************************************/
751 1927
752#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1928#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
753 1929
754/* find a suitable new size for the given array, */ 1930/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */ 1931/* hopefully by rounding to a nice-to-malloc size */
756inline_size int 1932inline_size int
757array_nextsize (int elem, int cur, int cnt) 1933array_nextsize (int elem, int cur, int cnt)
758{ 1934{
759 int ncur = cur + 1; 1935 int ncur = cur + 1;
760 1936
761 do 1937 do
762 ncur <<= 1; 1938 ncur <<= 1;
763 while (cnt > ncur); 1939 while (cnt > ncur);
764 1940
765 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1941 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
766 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1942 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
767 { 1943 {
768 ncur *= elem; 1944 ncur *= elem;
769 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1945 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
770 ncur = ncur - sizeof (void *) * 4; 1946 ncur = ncur - sizeof (void *) * 4;
… …
772 } 1948 }
773 1949
774 return ncur; 1950 return ncur;
775} 1951}
776 1952
777static noinline void * 1953noinline ecb_cold
1954static void *
778array_realloc (int elem, void *base, int *cur, int cnt) 1955array_realloc (int elem, void *base, int *cur, int cnt)
779{ 1956{
780 *cur = array_nextsize (elem, *cur, cnt); 1957 *cur = array_nextsize (elem, *cur, cnt);
781 return ev_realloc (base, elem * *cur); 1958 return ev_realloc (base, elem * *cur);
782} 1959}
… …
785 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1962 memset ((void *)(base), 0, sizeof (*(base)) * (count))
786 1963
787#define array_needsize(type,base,cur,cnt,init) \ 1964#define array_needsize(type,base,cur,cnt,init) \
788 if (expect_false ((cnt) > (cur))) \ 1965 if (expect_false ((cnt) > (cur))) \
789 { \ 1966 { \
790 int ocur_ = (cur); \ 1967 ecb_unused int ocur_ = (cur); \
791 (base) = (type *)array_realloc \ 1968 (base) = (type *)array_realloc \
792 (sizeof (type), (base), &(cur), (cnt)); \ 1969 (sizeof (type), (base), &(cur), (cnt)); \
793 init ((base) + (ocur_), (cur) - ocur_); \ 1970 init ((base) + (ocur_), (cur) - ocur_); \
794 } 1971 }
795 1972
… …
807 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1984 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
808 1985
809/*****************************************************************************/ 1986/*****************************************************************************/
810 1987
811/* dummy callback for pending events */ 1988/* dummy callback for pending events */
812static void noinline 1989noinline
1990static void
813pendingcb (EV_P_ ev_prepare *w, int revents) 1991pendingcb (EV_P_ ev_prepare *w, int revents)
814{ 1992{
815} 1993}
816 1994
817void noinline 1995noinline
1996void
818ev_feed_event (EV_P_ void *w, int revents) 1997ev_feed_event (EV_P_ void *w, int revents) EV_THROW
819{ 1998{
820 W w_ = (W)w; 1999 W w_ = (W)w;
821 int pri = ABSPRI (w_); 2000 int pri = ABSPRI (w_);
822 2001
823 if (expect_false (w_->pending)) 2002 if (expect_false (w_->pending))
… …
827 w_->pending = ++pendingcnt [pri]; 2006 w_->pending = ++pendingcnt [pri];
828 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2007 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
829 pendings [pri][w_->pending - 1].w = w_; 2008 pendings [pri][w_->pending - 1].w = w_;
830 pendings [pri][w_->pending - 1].events = revents; 2009 pendings [pri][w_->pending - 1].events = revents;
831 } 2010 }
2011
2012 pendingpri = NUMPRI - 1;
832} 2013}
833 2014
834inline_speed void 2015inline_speed void
835feed_reverse (EV_P_ W w) 2016feed_reverse (EV_P_ W w)
836{ 2017{
… …
856} 2037}
857 2038
858/*****************************************************************************/ 2039/*****************************************************************************/
859 2040
860inline_speed void 2041inline_speed void
861fd_event_nc (EV_P_ int fd, int revents) 2042fd_event_nocheck (EV_P_ int fd, int revents)
862{ 2043{
863 ANFD *anfd = anfds + fd; 2044 ANFD *anfd = anfds + fd;
864 ev_io *w; 2045 ev_io *w;
865 2046
866 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2047 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
878fd_event (EV_P_ int fd, int revents) 2059fd_event (EV_P_ int fd, int revents)
879{ 2060{
880 ANFD *anfd = anfds + fd; 2061 ANFD *anfd = anfds + fd;
881 2062
882 if (expect_true (!anfd->reify)) 2063 if (expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents); 2064 fd_event_nocheck (EV_A_ fd, revents);
884} 2065}
885 2066
886void 2067void
887ev_feed_fd_event (EV_P_ int fd, int revents) 2068ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
888{ 2069{
889 if (fd >= 0 && fd < anfdmax) 2070 if (fd >= 0 && fd < anfdmax)
890 fd_event_nc (EV_A_ fd, revents); 2071 fd_event_nocheck (EV_A_ fd, revents);
891} 2072}
892 2073
893/* make sure the external fd watch events are in-sync */ 2074/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */ 2075/* with the kernel/libev internal state */
895inline_size void 2076inline_size void
896fd_reify (EV_P) 2077fd_reify (EV_P)
897{ 2078{
898 int i; 2079 int i;
899 2080
2081#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2082 for (i = 0; i < fdchangecnt; ++i)
2083 {
2084 int fd = fdchanges [i];
2085 ANFD *anfd = anfds + fd;
2086
2087 if (anfd->reify & EV__IOFDSET && anfd->head)
2088 {
2089 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2090
2091 if (handle != anfd->handle)
2092 {
2093 unsigned long arg;
2094
2095 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2096
2097 /* handle changed, but fd didn't - we need to do it in two steps */
2098 backend_modify (EV_A_ fd, anfd->events, 0);
2099 anfd->events = 0;
2100 anfd->handle = handle;
2101 }
2102 }
2103 }
2104#endif
2105
900 for (i = 0; i < fdchangecnt; ++i) 2106 for (i = 0; i < fdchangecnt; ++i)
901 { 2107 {
902 int fd = fdchanges [i]; 2108 int fd = fdchanges [i];
903 ANFD *anfd = anfds + fd; 2109 ANFD *anfd = anfds + fd;
904 ev_io *w; 2110 ev_io *w;
905 2111
906 unsigned char events = 0; 2112 unsigned char o_events = anfd->events;
2113 unsigned char o_reify = anfd->reify;
907 2114
908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2115 anfd->reify = 0;
909 events |= (unsigned char)w->events;
910 2116
911#if EV_SELECT_IS_WINSOCKET 2117 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
912 if (events)
913 { 2118 {
914 unsigned long arg; 2119 anfd->events = 0;
915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2120
916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2121 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2122 anfd->events |= (unsigned char)w->events;
2123
2124 if (o_events != anfd->events)
2125 o_reify = EV__IOFDSET; /* actually |= */
917 } 2126 }
918#endif
919 2127
920 { 2128 if (o_reify & EV__IOFDSET)
921 unsigned char o_events = anfd->events;
922 unsigned char o_reify = anfd->reify;
923
924 anfd->reify = 0;
925 anfd->events = events;
926
927 if (o_events != events || o_reify & EV__IOFDSET)
928 backend_modify (EV_A_ fd, o_events, events); 2129 backend_modify (EV_A_ fd, o_events, anfd->events);
929 }
930 } 2130 }
931 2131
932 fdchangecnt = 0; 2132 fdchangecnt = 0;
933} 2133}
934 2134
935/* something about the given fd changed */ 2135/* something about the given fd changed */
936inline_size void 2136inline_size
2137void
937fd_change (EV_P_ int fd, int flags) 2138fd_change (EV_P_ int fd, int flags)
938{ 2139{
939 unsigned char reify = anfds [fd].reify; 2140 unsigned char reify = anfds [fd].reify;
940 anfds [fd].reify |= flags; 2141 anfds [fd].reify |= flags;
941 2142
… …
946 fdchanges [fdchangecnt - 1] = fd; 2147 fdchanges [fdchangecnt - 1] = fd;
947 } 2148 }
948} 2149}
949 2150
950/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2151/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
951inline_speed void 2152inline_speed ecb_cold void
952fd_kill (EV_P_ int fd) 2153fd_kill (EV_P_ int fd)
953{ 2154{
954 ev_io *w; 2155 ev_io *w;
955 2156
956 while ((w = (ev_io *)anfds [fd].head)) 2157 while ((w = (ev_io *)anfds [fd].head))
… …
958 ev_io_stop (EV_A_ w); 2159 ev_io_stop (EV_A_ w);
959 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2160 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
960 } 2161 }
961} 2162}
962 2163
963/* check whether the given fd is atcually valid, for error recovery */ 2164/* check whether the given fd is actually valid, for error recovery */
964inline_size int 2165inline_size ecb_cold int
965fd_valid (int fd) 2166fd_valid (int fd)
966{ 2167{
967#ifdef _WIN32 2168#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 2169 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 2170#else
970 return fcntl (fd, F_GETFD) != -1; 2171 return fcntl (fd, F_GETFD) != -1;
971#endif 2172#endif
972} 2173}
973 2174
974/* called on EBADF to verify fds */ 2175/* called on EBADF to verify fds */
975static void noinline 2176noinline ecb_cold
2177static void
976fd_ebadf (EV_P) 2178fd_ebadf (EV_P)
977{ 2179{
978 int fd; 2180 int fd;
979 2181
980 for (fd = 0; fd < anfdmax; ++fd) 2182 for (fd = 0; fd < anfdmax; ++fd)
… …
982 if (!fd_valid (fd) && errno == EBADF) 2184 if (!fd_valid (fd) && errno == EBADF)
983 fd_kill (EV_A_ fd); 2185 fd_kill (EV_A_ fd);
984} 2186}
985 2187
986/* called on ENOMEM in select/poll to kill some fds and retry */ 2188/* called on ENOMEM in select/poll to kill some fds and retry */
987static void noinline 2189noinline ecb_cold
2190static void
988fd_enomem (EV_P) 2191fd_enomem (EV_P)
989{ 2192{
990 int fd; 2193 int fd;
991 2194
992 for (fd = anfdmax; fd--; ) 2195 for (fd = anfdmax; fd--; )
… …
996 break; 2199 break;
997 } 2200 }
998} 2201}
999 2202
1000/* usually called after fork if backend needs to re-arm all fds from scratch */ 2203/* usually called after fork if backend needs to re-arm all fds from scratch */
1001static void noinline 2204noinline
2205static void
1002fd_rearm_all (EV_P) 2206fd_rearm_all (EV_P)
1003{ 2207{
1004 int fd; 2208 int fd;
1005 2209
1006 for (fd = 0; fd < anfdmax; ++fd) 2210 for (fd = 0; fd < anfdmax; ++fd)
… …
1010 anfds [fd].emask = 0; 2214 anfds [fd].emask = 0;
1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2215 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1012 } 2216 }
1013} 2217}
1014 2218
2219/* used to prepare libev internal fd's */
2220/* this is not fork-safe */
2221inline_speed void
2222fd_intern (int fd)
2223{
2224#ifdef _WIN32
2225 unsigned long arg = 1;
2226 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2227#else
2228 fcntl (fd, F_SETFD, FD_CLOEXEC);
2229 fcntl (fd, F_SETFL, O_NONBLOCK);
2230#endif
2231}
2232
1015/*****************************************************************************/ 2233/*****************************************************************************/
1016 2234
1017/* 2235/*
1018 * the heap functions want a real array index. array index 0 uis guaranteed to not 2236 * the heap functions want a real array index. array index 0 is guaranteed to not
1019 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2237 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1020 * the branching factor of the d-tree. 2238 * the branching factor of the d-tree.
1021 */ 2239 */
1022 2240
1023/* 2241/*
… …
1171 2389
1172static ANSIG signals [EV_NSIG - 1]; 2390static ANSIG signals [EV_NSIG - 1];
1173 2391
1174/*****************************************************************************/ 2392/*****************************************************************************/
1175 2393
1176/* used to prepare libev internal fd's */ 2394#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1177/* this is not fork-safe */ 2395
2396noinline ecb_cold
2397static void
2398evpipe_init (EV_P)
2399{
2400 if (!ev_is_active (&pipe_w))
2401 {
2402 int fds [2];
2403
2404# if EV_USE_EVENTFD
2405 fds [0] = -1;
2406 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2407 if (fds [1] < 0 && errno == EINVAL)
2408 fds [1] = eventfd (0, 0);
2409
2410 if (fds [1] < 0)
2411# endif
2412 {
2413 while (pipe (fds))
2414 ev_syserr ("(libev) error creating signal/async pipe");
2415
2416 fd_intern (fds [0]);
2417 }
2418
2419 evpipe [0] = fds [0];
2420
2421 if (evpipe [1] < 0)
2422 evpipe [1] = fds [1]; /* first call, set write fd */
2423 else
2424 {
2425 /* on subsequent calls, do not change evpipe [1] */
2426 /* so that evpipe_write can always rely on its value. */
2427 /* this branch does not do anything sensible on windows, */
2428 /* so must not be executed on windows */
2429
2430 dup2 (fds [1], evpipe [1]);
2431 close (fds [1]);
2432 }
2433
2434 fd_intern (evpipe [1]);
2435
2436 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2437 ev_io_start (EV_A_ &pipe_w);
2438 ev_unref (EV_A); /* watcher should not keep loop alive */
2439 }
2440}
2441
1178inline_speed void 2442inline_speed void
1179fd_intern (int fd) 2443evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1180{ 2444{
1181#ifdef _WIN32 2445 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1182 unsigned long arg = 1;
1183 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1184#else
1185 fcntl (fd, F_SETFD, FD_CLOEXEC);
1186 fcntl (fd, F_SETFL, O_NONBLOCK);
1187#endif
1188}
1189 2446
1190static void noinline 2447 if (expect_true (*flag))
1191evpipe_init (EV_P) 2448 return;
1192{ 2449
1193 if (!ev_is_active (&pipe_w)) 2450 *flag = 1;
2451 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2452
2453 pipe_write_skipped = 1;
2454
2455 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2456
2457 if (pipe_write_wanted)
1194 { 2458 {
2459 int old_errno;
2460
2461 pipe_write_skipped = 0;
2462 ECB_MEMORY_FENCE_RELEASE;
2463
2464 old_errno = errno; /* save errno because write will clobber it */
2465
1195#if EV_USE_EVENTFD 2466#if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2467 if (evpipe [0] < 0)
1197 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0);
1199
1200 if (evfd >= 0)
1201 { 2468 {
1202 evpipe [0] = -1; 2469 uint64_t counter = 1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */ 2470 write (evpipe [1], &counter, sizeof (uint64_t));
1204 ev_io_set (&pipe_w, evfd, EV_READ);
1205 } 2471 }
1206 else 2472 else
1207#endif 2473#endif
1208 { 2474 {
1209 while (pipe (evpipe)) 2475#ifdef _WIN32
1210 ev_syserr ("(libev) error creating signal/async pipe"); 2476 WSABUF buf;
1211 2477 DWORD sent;
1212 fd_intern (evpipe [0]); 2478 buf.buf = &buf;
1213 fd_intern (evpipe [1]); 2479 buf.len = 1;
1214 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2480 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2481#else
2482 write (evpipe [1], &(evpipe [1]), 1);
2483#endif
1215 } 2484 }
1216
1217 ev_io_start (EV_A_ &pipe_w);
1218 ev_unref (EV_A); /* watcher should not keep loop alive */
1219 }
1220}
1221
1222inline_size void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{
1225 if (!*flag)
1226 {
1227 int old_errno = errno; /* save errno because write might clobber it */
1228
1229 *flag = 1;
1230
1231#if EV_USE_EVENTFD
1232 if (evfd >= 0)
1233 {
1234 uint64_t counter = 1;
1235 write (evfd, &counter, sizeof (uint64_t));
1236 }
1237 else
1238#endif
1239 write (evpipe [1], &old_errno, 1);
1240 2485
1241 errno = old_errno; 2486 errno = old_errno;
1242 } 2487 }
1243} 2488}
1244 2489
… …
1247static void 2492static void
1248pipecb (EV_P_ ev_io *iow, int revents) 2493pipecb (EV_P_ ev_io *iow, int revents)
1249{ 2494{
1250 int i; 2495 int i;
1251 2496
2497 if (revents & EV_READ)
2498 {
1252#if EV_USE_EVENTFD 2499#if EV_USE_EVENTFD
1253 if (evfd >= 0) 2500 if (evpipe [0] < 0)
1254 { 2501 {
1255 uint64_t counter; 2502 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t)); 2503 read (evpipe [1], &counter, sizeof (uint64_t));
1257 } 2504 }
1258 else 2505 else
1259#endif 2506#endif
1260 { 2507 {
1261 char dummy; 2508 char dummy[4];
2509#ifdef _WIN32
2510 WSABUF buf;
2511 DWORD recvd;
2512 DWORD flags = 0;
2513 buf.buf = dummy;
2514 buf.len = sizeof (dummy);
2515 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2516#else
1262 read (evpipe [0], &dummy, 1); 2517 read (evpipe [0], &dummy, sizeof (dummy));
2518#endif
2519 }
1263 } 2520 }
1264 2521
2522 pipe_write_skipped = 0;
2523
2524 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2525
2526#if EV_SIGNAL_ENABLE
1265 if (sig_pending) 2527 if (sig_pending)
1266 { 2528 {
1267 sig_pending = 0; 2529 sig_pending = 0;
2530
2531 ECB_MEMORY_FENCE;
1268 2532
1269 for (i = EV_NSIG - 1; i--; ) 2533 for (i = EV_NSIG - 1; i--; )
1270 if (expect_false (signals [i].pending)) 2534 if (expect_false (signals [i].pending))
1271 ev_feed_signal_event (EV_A_ i + 1); 2535 ev_feed_signal_event (EV_A_ i + 1);
1272 } 2536 }
2537#endif
1273 2538
1274#if EV_ASYNC_ENABLE 2539#if EV_ASYNC_ENABLE
1275 if (async_pending) 2540 if (async_pending)
1276 { 2541 {
1277 async_pending = 0; 2542 async_pending = 0;
2543
2544 ECB_MEMORY_FENCE;
1278 2545
1279 for (i = asynccnt; i--; ) 2546 for (i = asynccnt; i--; )
1280 if (asyncs [i]->sent) 2547 if (asyncs [i]->sent)
1281 { 2548 {
1282 asyncs [i]->sent = 0; 2549 asyncs [i]->sent = 0;
2550 ECB_MEMORY_FENCE_RELEASE;
1283 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2551 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1284 } 2552 }
1285 } 2553 }
1286#endif 2554#endif
1287} 2555}
1288 2556
1289/*****************************************************************************/ 2557/*****************************************************************************/
1290 2558
2559void
2560ev_feed_signal (int signum) EV_THROW
2561{
2562#if EV_MULTIPLICITY
2563 EV_P;
2564 ECB_MEMORY_FENCE_ACQUIRE;
2565 EV_A = signals [signum - 1].loop;
2566
2567 if (!EV_A)
2568 return;
2569#endif
2570
2571 signals [signum - 1].pending = 1;
2572 evpipe_write (EV_A_ &sig_pending);
2573}
2574
1291static void 2575static void
1292ev_sighandler (int signum) 2576ev_sighandler (int signum)
1293{ 2577{
1294#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop;
1296#endif
1297
1298#if _WIN32 2578#ifdef _WIN32
1299 signal (signum, ev_sighandler); 2579 signal (signum, ev_sighandler);
1300#endif 2580#endif
1301 2581
1302 signals [signum - 1].pending = 1; 2582 ev_feed_signal (signum);
1303 evpipe_write (EV_A_ &sig_pending);
1304} 2583}
1305 2584
1306void noinline 2585noinline
2586void
1307ev_feed_signal_event (EV_P_ int signum) 2587ev_feed_signal_event (EV_P_ int signum) EV_THROW
1308{ 2588{
1309 WL w; 2589 WL w;
1310 2590
1311 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2591 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1312 return; 2592 return;
1313 2593
1314 --signum; 2594 --signum;
1315 2595
1316#if EV_MULTIPLICITY 2596#if EV_MULTIPLICITY
… …
1320 if (expect_false (signals [signum].loop != EV_A)) 2600 if (expect_false (signals [signum].loop != EV_A))
1321 return; 2601 return;
1322#endif 2602#endif
1323 2603
1324 signals [signum].pending = 0; 2604 signals [signum].pending = 0;
2605 ECB_MEMORY_FENCE_RELEASE;
1325 2606
1326 for (w = signals [signum].head; w; w = w->next) 2607 for (w = signals [signum].head; w; w = w->next)
1327 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2608 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1328} 2609}
1329 2610
… …
1345 break; 2626 break;
1346 } 2627 }
1347} 2628}
1348#endif 2629#endif
1349 2630
2631#endif
2632
1350/*****************************************************************************/ 2633/*****************************************************************************/
1351 2634
2635#if EV_CHILD_ENABLE
1352static WL childs [EV_PID_HASHSIZE]; 2636static WL childs [EV_PID_HASHSIZE];
1353
1354#ifndef _WIN32
1355 2637
1356static ev_signal childev; 2638static ev_signal childev;
1357 2639
1358#ifndef WIFCONTINUED 2640#ifndef WIFCONTINUED
1359# define WIFCONTINUED(status) 0 2641# define WIFCONTINUED(status) 0
… …
1364child_reap (EV_P_ int chain, int pid, int status) 2646child_reap (EV_P_ int chain, int pid, int status)
1365{ 2647{
1366 ev_child *w; 2648 ev_child *w;
1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2649 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1368 2650
1369 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2651 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1370 { 2652 {
1371 if ((w->pid == pid || !w->pid) 2653 if ((w->pid == pid || !w->pid)
1372 && (!traced || (w->flags & 1))) 2654 && (!traced || (w->flags & 1)))
1373 { 2655 {
1374 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2656 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1399 /* make sure we are called again until all children have been reaped */ 2681 /* make sure we are called again until all children have been reaped */
1400 /* we need to do it this way so that the callback gets called before we continue */ 2682 /* we need to do it this way so that the callback gets called before we continue */
1401 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2683 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1402 2684
1403 child_reap (EV_A_ pid, pid, status); 2685 child_reap (EV_A_ pid, pid, status);
1404 if (EV_PID_HASHSIZE > 1) 2686 if ((EV_PID_HASHSIZE) > 1)
1405 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2687 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1406} 2688}
1407 2689
1408#endif 2690#endif
1409 2691
1410/*****************************************************************************/ 2692/*****************************************************************************/
1411 2693
2694#if EV_USE_IOCP
2695# include "ev_iocp.c"
2696#endif
1412#if EV_USE_PORT 2697#if EV_USE_PORT
1413# include "ev_port.c" 2698# include "ev_port.c"
1414#endif 2699#endif
1415#if EV_USE_KQUEUE 2700#if EV_USE_KQUEUE
1416# include "ev_kqueue.c" 2701# include "ev_kqueue.c"
… …
1423#endif 2708#endif
1424#if EV_USE_SELECT 2709#if EV_USE_SELECT
1425# include "ev_select.c" 2710# include "ev_select.c"
1426#endif 2711#endif
1427 2712
1428int 2713ecb_cold int
1429ev_version_major (void) 2714ev_version_major (void) EV_THROW
1430{ 2715{
1431 return EV_VERSION_MAJOR; 2716 return EV_VERSION_MAJOR;
1432} 2717}
1433 2718
1434int 2719ecb_cold int
1435ev_version_minor (void) 2720ev_version_minor (void) EV_THROW
1436{ 2721{
1437 return EV_VERSION_MINOR; 2722 return EV_VERSION_MINOR;
1438} 2723}
1439 2724
1440/* return true if we are running with elevated privileges and should ignore env variables */ 2725/* return true if we are running with elevated privileges and should ignore env variables */
1441int inline_size 2726inline_size ecb_cold int
1442enable_secure (void) 2727enable_secure (void)
1443{ 2728{
1444#ifdef _WIN32 2729#ifdef _WIN32
1445 return 0; 2730 return 0;
1446#else 2731#else
1447 return getuid () != geteuid () 2732 return getuid () != geteuid ()
1448 || getgid () != getegid (); 2733 || getgid () != getegid ();
1449#endif 2734#endif
1450} 2735}
1451 2736
2737ecb_cold
1452unsigned int 2738unsigned int
1453ev_supported_backends (void) 2739ev_supported_backends (void) EV_THROW
1454{ 2740{
1455 unsigned int flags = 0; 2741 unsigned int flags = 0;
1456 2742
1457 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2743 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1458 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2744 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1461 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2747 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1462 2748
1463 return flags; 2749 return flags;
1464} 2750}
1465 2751
2752ecb_cold
1466unsigned int 2753unsigned int
1467ev_recommended_backends (void) 2754ev_recommended_backends (void) EV_THROW
1468{ 2755{
1469 unsigned int flags = ev_supported_backends (); 2756 unsigned int flags = ev_supported_backends ();
1470 2757
1471#ifndef __NetBSD__ 2758#ifndef __NetBSD__
1472 /* kqueue is borked on everything but netbsd apparently */ 2759 /* kqueue is borked on everything but netbsd apparently */
… …
1476#ifdef __APPLE__ 2763#ifdef __APPLE__
1477 /* only select works correctly on that "unix-certified" platform */ 2764 /* only select works correctly on that "unix-certified" platform */
1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2765 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2766 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1480#endif 2767#endif
2768#ifdef __FreeBSD__
2769 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2770#endif
1481 2771
1482 return flags; 2772 return flags;
1483} 2773}
1484 2774
2775ecb_cold
1485unsigned int 2776unsigned int
1486ev_embeddable_backends (void) 2777ev_embeddable_backends (void) EV_THROW
1487{ 2778{
1488 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2779 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1489 2780
1490 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2781 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1491 /* please fix it and tell me how to detect the fix */ 2782 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1492 flags &= ~EVBACKEND_EPOLL; 2783 flags &= ~EVBACKEND_EPOLL;
1493 2784
1494 return flags; 2785 return flags;
1495} 2786}
1496 2787
1497unsigned int 2788unsigned int
1498ev_backend (EV_P) 2789ev_backend (EV_P) EV_THROW
1499{ 2790{
1500 return backend; 2791 return backend;
1501} 2792}
1502 2793
1503#if EV_MINIMAL < 2 2794#if EV_FEATURE_API
1504unsigned int 2795unsigned int
1505ev_loop_count (EV_P) 2796ev_iteration (EV_P) EV_THROW
1506{ 2797{
1507 return loop_count; 2798 return loop_count;
1508} 2799}
1509 2800
1510unsigned int 2801unsigned int
1511ev_loop_depth (EV_P) 2802ev_depth (EV_P) EV_THROW
1512{ 2803{
1513 return loop_depth; 2804 return loop_depth;
1514} 2805}
1515 2806
1516void 2807void
1517ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2808ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1518{ 2809{
1519 io_blocktime = interval; 2810 io_blocktime = interval;
1520} 2811}
1521 2812
1522void 2813void
1523ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2814ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1524{ 2815{
1525 timeout_blocktime = interval; 2816 timeout_blocktime = interval;
1526} 2817}
1527 2818
1528void 2819void
1529ev_set_userdata (EV_P_ void *data) 2820ev_set_userdata (EV_P_ void *data) EV_THROW
1530{ 2821{
1531 userdata = data; 2822 userdata = data;
1532} 2823}
1533 2824
1534void * 2825void *
1535ev_userdata (EV_P) 2826ev_userdata (EV_P) EV_THROW
1536{ 2827{
1537 return userdata; 2828 return userdata;
1538} 2829}
1539 2830
2831void
1540void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2832ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1541{ 2833{
1542 invoke_cb = invoke_pending_cb; 2834 invoke_cb = invoke_pending_cb;
1543} 2835}
1544 2836
2837void
1545void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2838ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1546{ 2839{
1547 release_cb = release; 2840 release_cb = release;
1548 acquire_cb = acquire; 2841 acquire_cb = acquire;
1549} 2842}
1550#endif 2843#endif
1551 2844
1552/* initialise a loop structure, must be zero-initialised */ 2845/* initialise a loop structure, must be zero-initialised */
1553static void noinline 2846noinline ecb_cold
2847static void
1554loop_init (EV_P_ unsigned int flags) 2848loop_init (EV_P_ unsigned int flags) EV_THROW
1555{ 2849{
1556 if (!backend) 2850 if (!backend)
1557 { 2851 {
2852 origflags = flags;
2853
1558#if EV_USE_REALTIME 2854#if EV_USE_REALTIME
1559 if (!have_realtime) 2855 if (!have_realtime)
1560 { 2856 {
1561 struct timespec ts; 2857 struct timespec ts;
1562 2858
… …
1584 if (!(flags & EVFLAG_NOENV) 2880 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure () 2881 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS")) 2882 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS")); 2883 flags = atoi (getenv ("LIBEV_FLAGS"));
1588 2884
1589 ev_rt_now = ev_time (); 2885 ev_rt_now = ev_time ();
1590 mn_now = get_clock (); 2886 mn_now = get_clock ();
1591 now_floor = mn_now; 2887 now_floor = mn_now;
1592 rtmn_diff = ev_rt_now - mn_now; 2888 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2 2889#if EV_FEATURE_API
1594 invoke_cb = ev_invoke_pending; 2890 invoke_cb = ev_invoke_pending;
1595#endif 2891#endif
1596 2892
1597 io_blocktime = 0.; 2893 io_blocktime = 0.;
1598 timeout_blocktime = 0.; 2894 timeout_blocktime = 0.;
1599 backend = 0; 2895 backend = 0;
1600 backend_fd = -1; 2896 backend_fd = -1;
1601 sig_pending = 0; 2897 sig_pending = 0;
1602#if EV_ASYNC_ENABLE 2898#if EV_ASYNC_ENABLE
1603 async_pending = 0; 2899 async_pending = 0;
1604#endif 2900#endif
2901 pipe_write_skipped = 0;
2902 pipe_write_wanted = 0;
2903 evpipe [0] = -1;
2904 evpipe [1] = -1;
1605#if EV_USE_INOTIFY 2905#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2906 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 2907#endif
1608#if EV_USE_SIGNALFD 2908#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2909 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 2910#endif
1611 2911
1612 if (!(flags & 0x0000ffffU)) 2912 if (!(flags & EVBACKEND_MASK))
1613 flags |= ev_recommended_backends (); 2913 flags |= ev_recommended_backends ();
1614 2914
2915#if EV_USE_IOCP
2916 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2917#endif
1615#if EV_USE_PORT 2918#if EV_USE_PORT
1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2919 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1617#endif 2920#endif
1618#if EV_USE_KQUEUE 2921#if EV_USE_KQUEUE
1619 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2922 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2931 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1629#endif 2932#endif
1630 2933
1631 ev_prepare_init (&pending_w, pendingcb); 2934 ev_prepare_init (&pending_w, pendingcb);
1632 2935
2936#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1633 ev_init (&pipe_w, pipecb); 2937 ev_init (&pipe_w, pipecb);
1634 ev_set_priority (&pipe_w, EV_MAXPRI); 2938 ev_set_priority (&pipe_w, EV_MAXPRI);
2939#endif
1635 } 2940 }
1636} 2941}
1637 2942
1638/* free up a loop structure */ 2943/* free up a loop structure */
1639static void noinline 2944ecb_cold
2945void
1640loop_destroy (EV_P) 2946ev_loop_destroy (EV_P)
1641{ 2947{
1642 int i; 2948 int i;
2949
2950#if EV_MULTIPLICITY
2951 /* mimic free (0) */
2952 if (!EV_A)
2953 return;
2954#endif
2955
2956#if EV_CLEANUP_ENABLE
2957 /* queue cleanup watchers (and execute them) */
2958 if (expect_false (cleanupcnt))
2959 {
2960 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2961 EV_INVOKE_PENDING;
2962 }
2963#endif
2964
2965#if EV_CHILD_ENABLE
2966 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2967 {
2968 ev_ref (EV_A); /* child watcher */
2969 ev_signal_stop (EV_A_ &childev);
2970 }
2971#endif
1643 2972
1644 if (ev_is_active (&pipe_w)) 2973 if (ev_is_active (&pipe_w))
1645 { 2974 {
1646 /*ev_ref (EV_A);*/ 2975 /*ev_ref (EV_A);*/
1647 /*ev_io_stop (EV_A_ &pipe_w);*/ 2976 /*ev_io_stop (EV_A_ &pipe_w);*/
1648 2977
1649#if EV_USE_EVENTFD
1650 if (evfd >= 0)
1651 close (evfd);
1652#endif
1653
1654 if (evpipe [0] >= 0)
1655 {
1656 EV_WIN32_CLOSE_FD (evpipe [0]); 2978 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1657 EV_WIN32_CLOSE_FD (evpipe [1]); 2979 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1658 }
1659 } 2980 }
1660 2981
1661#if EV_USE_SIGNALFD 2982#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w)) 2983 if (ev_is_active (&sigfd_w))
1663 {
1664 /*ev_ref (EV_A);*/
1665 /*ev_io_stop (EV_A_ &sigfd_w);*/
1666
1667 close (sigfd); 2984 close (sigfd);
1668 }
1669#endif 2985#endif
1670 2986
1671#if EV_USE_INOTIFY 2987#if EV_USE_INOTIFY
1672 if (fs_fd >= 0) 2988 if (fs_fd >= 0)
1673 close (fs_fd); 2989 close (fs_fd);
1674#endif 2990#endif
1675 2991
1676 if (backend_fd >= 0) 2992 if (backend_fd >= 0)
1677 close (backend_fd); 2993 close (backend_fd);
1678 2994
2995#if EV_USE_IOCP
2996 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2997#endif
1679#if EV_USE_PORT 2998#if EV_USE_PORT
1680 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2999 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1681#endif 3000#endif
1682#if EV_USE_KQUEUE 3001#if EV_USE_KQUEUE
1683 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3002 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1710 array_free (periodic, EMPTY); 3029 array_free (periodic, EMPTY);
1711#endif 3030#endif
1712#if EV_FORK_ENABLE 3031#if EV_FORK_ENABLE
1713 array_free (fork, EMPTY); 3032 array_free (fork, EMPTY);
1714#endif 3033#endif
3034#if EV_CLEANUP_ENABLE
3035 array_free (cleanup, EMPTY);
3036#endif
1715 array_free (prepare, EMPTY); 3037 array_free (prepare, EMPTY);
1716 array_free (check, EMPTY); 3038 array_free (check, EMPTY);
1717#if EV_ASYNC_ENABLE 3039#if EV_ASYNC_ENABLE
1718 array_free (async, EMPTY); 3040 array_free (async, EMPTY);
1719#endif 3041#endif
1720 3042
1721 backend = 0; 3043 backend = 0;
3044
3045#if EV_MULTIPLICITY
3046 if (ev_is_default_loop (EV_A))
3047#endif
3048 ev_default_loop_ptr = 0;
3049#if EV_MULTIPLICITY
3050 else
3051 ev_free (EV_A);
3052#endif
1722} 3053}
1723 3054
1724#if EV_USE_INOTIFY 3055#if EV_USE_INOTIFY
1725inline_size void infy_fork (EV_P); 3056inline_size void infy_fork (EV_P);
1726#endif 3057#endif
… …
1739#endif 3070#endif
1740#if EV_USE_INOTIFY 3071#if EV_USE_INOTIFY
1741 infy_fork (EV_A); 3072 infy_fork (EV_A);
1742#endif 3073#endif
1743 3074
3075#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1744 if (ev_is_active (&pipe_w)) 3076 if (ev_is_active (&pipe_w) && postfork != 2)
1745 { 3077 {
1746 /* this "locks" the handlers against writing to the pipe */ 3078 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1747 /* while we modify the fd vars */
1748 sig_pending = 1;
1749#if EV_ASYNC_ENABLE
1750 async_pending = 1;
1751#endif
1752 3079
1753 ev_ref (EV_A); 3080 ev_ref (EV_A);
1754 ev_io_stop (EV_A_ &pipe_w); 3081 ev_io_stop (EV_A_ &pipe_w);
1755 3082
1756#if EV_USE_EVENTFD
1757 if (evfd >= 0)
1758 close (evfd);
1759#endif
1760
1761 if (evpipe [0] >= 0) 3083 if (evpipe [0] >= 0)
1762 {
1763 EV_WIN32_CLOSE_FD (evpipe [0]); 3084 EV_WIN32_CLOSE_FD (evpipe [0]);
1764 EV_WIN32_CLOSE_FD (evpipe [1]);
1765 }
1766 3085
1767 evpipe_init (EV_A); 3086 evpipe_init (EV_A);
1768 /* now iterate over everything, in case we missed something */ 3087 /* iterate over everything, in case we missed something before */
1769 pipecb (EV_A_ &pipe_w, EV_READ); 3088 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1770 } 3089 }
3090#endif
1771 3091
1772 postfork = 0; 3092 postfork = 0;
1773} 3093}
1774 3094
1775#if EV_MULTIPLICITY 3095#if EV_MULTIPLICITY
1776 3096
3097ecb_cold
1777struct ev_loop * 3098struct ev_loop *
1778ev_loop_new (unsigned int flags) 3099ev_loop_new (unsigned int flags) EV_THROW
1779{ 3100{
1780 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3101 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1781 3102
1782 memset (EV_A, 0, sizeof (struct ev_loop)); 3103 memset (EV_A, 0, sizeof (struct ev_loop));
1783 loop_init (EV_A_ flags); 3104 loop_init (EV_A_ flags);
1784 3105
1785 if (ev_backend (EV_A)) 3106 if (ev_backend (EV_A))
1786 return EV_A; 3107 return EV_A;
1787 3108
3109 ev_free (EV_A);
1788 return 0; 3110 return 0;
1789} 3111}
1790 3112
1791void
1792ev_loop_destroy (EV_P)
1793{
1794 loop_destroy (EV_A);
1795 ev_free (loop);
1796}
1797
1798void
1799ev_loop_fork (EV_P)
1800{
1801 postfork = 1; /* must be in line with ev_default_fork */
1802}
1803#endif /* multiplicity */ 3113#endif /* multiplicity */
1804 3114
1805#if EV_VERIFY 3115#if EV_VERIFY
1806static void noinline 3116noinline ecb_cold
3117static void
1807verify_watcher (EV_P_ W w) 3118verify_watcher (EV_P_ W w)
1808{ 3119{
1809 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3120 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1810 3121
1811 if (w->pending) 3122 if (w->pending)
1812 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3123 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1813} 3124}
1814 3125
1815static void noinline 3126noinline ecb_cold
3127static void
1816verify_heap (EV_P_ ANHE *heap, int N) 3128verify_heap (EV_P_ ANHE *heap, int N)
1817{ 3129{
1818 int i; 3130 int i;
1819 3131
1820 for (i = HEAP0; i < N + HEAP0; ++i) 3132 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1825 3137
1826 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3138 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1827 } 3139 }
1828} 3140}
1829 3141
1830static void noinline 3142noinline ecb_cold
3143static void
1831array_verify (EV_P_ W *ws, int cnt) 3144array_verify (EV_P_ W *ws, int cnt)
1832{ 3145{
1833 while (cnt--) 3146 while (cnt--)
1834 { 3147 {
1835 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3148 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1836 verify_watcher (EV_A_ ws [cnt]); 3149 verify_watcher (EV_A_ ws [cnt]);
1837 } 3150 }
1838} 3151}
1839#endif 3152#endif
1840 3153
1841#if EV_MINIMAL < 2 3154#if EV_FEATURE_API
1842void 3155void ecb_cold
1843ev_loop_verify (EV_P) 3156ev_verify (EV_P) EV_THROW
1844{ 3157{
1845#if EV_VERIFY 3158#if EV_VERIFY
1846 int i; 3159 int i;
1847 WL w; 3160 WL w, w2;
1848 3161
1849 assert (activecnt >= -1); 3162 assert (activecnt >= -1);
1850 3163
1851 assert (fdchangemax >= fdchangecnt); 3164 assert (fdchangemax >= fdchangecnt);
1852 for (i = 0; i < fdchangecnt; ++i) 3165 for (i = 0; i < fdchangecnt; ++i)
1853 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3166 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1854 3167
1855 assert (anfdmax >= 0); 3168 assert (anfdmax >= 0);
1856 for (i = 0; i < anfdmax; ++i) 3169 for (i = 0; i < anfdmax; ++i)
3170 {
3171 int j = 0;
3172
1857 for (w = anfds [i].head; w; w = w->next) 3173 for (w = w2 = anfds [i].head; w; w = w->next)
1858 { 3174 {
1859 verify_watcher (EV_A_ (W)w); 3175 verify_watcher (EV_A_ (W)w);
3176
3177 if (j++ & 1)
3178 {
3179 assert (("libev: io watcher list contains a loop", w != w2));
3180 w2 = w2->next;
3181 }
3182
1860 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3183 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1861 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3184 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1862 } 3185 }
3186 }
1863 3187
1864 assert (timermax >= timercnt); 3188 assert (timermax >= timercnt);
1865 verify_heap (EV_A_ timers, timercnt); 3189 verify_heap (EV_A_ timers, timercnt);
1866 3190
1867#if EV_PERIODIC_ENABLE 3191#if EV_PERIODIC_ENABLE
… …
1882#if EV_FORK_ENABLE 3206#if EV_FORK_ENABLE
1883 assert (forkmax >= forkcnt); 3207 assert (forkmax >= forkcnt);
1884 array_verify (EV_A_ (W *)forks, forkcnt); 3208 array_verify (EV_A_ (W *)forks, forkcnt);
1885#endif 3209#endif
1886 3210
3211#if EV_CLEANUP_ENABLE
3212 assert (cleanupmax >= cleanupcnt);
3213 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3214#endif
3215
1887#if EV_ASYNC_ENABLE 3216#if EV_ASYNC_ENABLE
1888 assert (asyncmax >= asynccnt); 3217 assert (asyncmax >= asynccnt);
1889 array_verify (EV_A_ (W *)asyncs, asynccnt); 3218 array_verify (EV_A_ (W *)asyncs, asynccnt);
1890#endif 3219#endif
1891 3220
3221#if EV_PREPARE_ENABLE
1892 assert (preparemax >= preparecnt); 3222 assert (preparemax >= preparecnt);
1893 array_verify (EV_A_ (W *)prepares, preparecnt); 3223 array_verify (EV_A_ (W *)prepares, preparecnt);
3224#endif
1894 3225
3226#if EV_CHECK_ENABLE
1895 assert (checkmax >= checkcnt); 3227 assert (checkmax >= checkcnt);
1896 array_verify (EV_A_ (W *)checks, checkcnt); 3228 array_verify (EV_A_ (W *)checks, checkcnt);
3229#endif
1897 3230
1898# if 0 3231# if 0
3232#if EV_CHILD_ENABLE
1899 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3233 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1900 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3234 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3235#endif
1901# endif 3236# endif
1902#endif 3237#endif
1903} 3238}
1904#endif 3239#endif
1905 3240
1906#if EV_MULTIPLICITY 3241#if EV_MULTIPLICITY
3242ecb_cold
1907struct ev_loop * 3243struct ev_loop *
1908ev_default_loop_init (unsigned int flags)
1909#else 3244#else
1910int 3245int
3246#endif
1911ev_default_loop (unsigned int flags) 3247ev_default_loop (unsigned int flags) EV_THROW
1912#endif
1913{ 3248{
1914 if (!ev_default_loop_ptr) 3249 if (!ev_default_loop_ptr)
1915 { 3250 {
1916#if EV_MULTIPLICITY 3251#if EV_MULTIPLICITY
1917 EV_P = ev_default_loop_ptr = &default_loop_struct; 3252 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1921 3256
1922 loop_init (EV_A_ flags); 3257 loop_init (EV_A_ flags);
1923 3258
1924 if (ev_backend (EV_A)) 3259 if (ev_backend (EV_A))
1925 { 3260 {
1926#ifndef _WIN32 3261#if EV_CHILD_ENABLE
1927 ev_signal_init (&childev, childcb, SIGCHLD); 3262 ev_signal_init (&childev, childcb, SIGCHLD);
1928 ev_set_priority (&childev, EV_MAXPRI); 3263 ev_set_priority (&childev, EV_MAXPRI);
1929 ev_signal_start (EV_A_ &childev); 3264 ev_signal_start (EV_A_ &childev);
1930 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3265 ev_unref (EV_A); /* child watcher should not keep loop alive */
1931#endif 3266#endif
… …
1936 3271
1937 return ev_default_loop_ptr; 3272 return ev_default_loop_ptr;
1938} 3273}
1939 3274
1940void 3275void
1941ev_default_destroy (void) 3276ev_loop_fork (EV_P) EV_THROW
1942{ 3277{
1943#if EV_MULTIPLICITY 3278 postfork = 1;
1944 EV_P = ev_default_loop_ptr;
1945#endif
1946
1947 ev_default_loop_ptr = 0;
1948
1949#ifndef _WIN32
1950 ev_ref (EV_A); /* child watcher */
1951 ev_signal_stop (EV_A_ &childev);
1952#endif
1953
1954 loop_destroy (EV_A);
1955}
1956
1957void
1958ev_default_fork (void)
1959{
1960#if EV_MULTIPLICITY
1961 EV_P = ev_default_loop_ptr;
1962#endif
1963
1964 postfork = 1; /* must be in line with ev_loop_fork */
1965} 3279}
1966 3280
1967/*****************************************************************************/ 3281/*****************************************************************************/
1968 3282
1969void 3283void
… …
1971{ 3285{
1972 EV_CB_INVOKE ((W)w, revents); 3286 EV_CB_INVOKE ((W)w, revents);
1973} 3287}
1974 3288
1975unsigned int 3289unsigned int
1976ev_pending_count (EV_P) 3290ev_pending_count (EV_P) EV_THROW
1977{ 3291{
1978 int pri; 3292 int pri;
1979 unsigned int count = 0; 3293 unsigned int count = 0;
1980 3294
1981 for (pri = NUMPRI; pri--; ) 3295 for (pri = NUMPRI; pri--; )
1982 count += pendingcnt [pri]; 3296 count += pendingcnt [pri];
1983 3297
1984 return count; 3298 return count;
1985} 3299}
1986 3300
1987void noinline 3301noinline
3302void
1988ev_invoke_pending (EV_P) 3303ev_invoke_pending (EV_P)
1989{ 3304{
1990 int pri; 3305 pendingpri = NUMPRI;
1991 3306
1992 for (pri = NUMPRI; pri--; ) 3307 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3308 {
3309 --pendingpri;
3310
1993 while (pendingcnt [pri]) 3311 while (pendingcnt [pendingpri])
1994 { 3312 {
1995 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3313 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1996 3314
1997 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1998 /* ^ this is no longer true, as pending_w could be here */
1999
2000 p->w->pending = 0; 3315 p->w->pending = 0;
2001 EV_CB_INVOKE (p->w, p->events); 3316 EV_CB_INVOKE (p->w, p->events);
2002 EV_FREQUENT_CHECK; 3317 EV_FREQUENT_CHECK;
2003 } 3318 }
3319 }
2004} 3320}
2005 3321
2006#if EV_IDLE_ENABLE 3322#if EV_IDLE_ENABLE
2007/* make idle watchers pending. this handles the "call-idle */ 3323/* make idle watchers pending. this handles the "call-idle */
2008/* only when higher priorities are idle" logic */ 3324/* only when higher priorities are idle" logic */
… …
2060 EV_FREQUENT_CHECK; 3376 EV_FREQUENT_CHECK;
2061 feed_reverse (EV_A_ (W)w); 3377 feed_reverse (EV_A_ (W)w);
2062 } 3378 }
2063 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3379 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2064 3380
2065 feed_reverse_done (EV_A_ EV_TIMEOUT); 3381 feed_reverse_done (EV_A_ EV_TIMER);
2066 } 3382 }
2067} 3383}
2068 3384
2069#if EV_PERIODIC_ENABLE 3385#if EV_PERIODIC_ENABLE
3386
3387noinline
3388static void
3389periodic_recalc (EV_P_ ev_periodic *w)
3390{
3391 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3392 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3393
3394 /* the above almost always errs on the low side */
3395 while (at <= ev_rt_now)
3396 {
3397 ev_tstamp nat = at + w->interval;
3398
3399 /* when resolution fails us, we use ev_rt_now */
3400 if (expect_false (nat == at))
3401 {
3402 at = ev_rt_now;
3403 break;
3404 }
3405
3406 at = nat;
3407 }
3408
3409 ev_at (w) = at;
3410}
3411
2070/* make periodics pending */ 3412/* make periodics pending */
2071inline_size void 3413inline_size void
2072periodics_reify (EV_P) 3414periodics_reify (EV_P)
2073{ 3415{
2074 EV_FREQUENT_CHECK; 3416 EV_FREQUENT_CHECK;
2075 3417
2076 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3418 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2077 { 3419 {
2078 int feed_count = 0;
2079
2080 do 3420 do
2081 { 3421 {
2082 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3422 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2083 3423
2084 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3424 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2093 ANHE_at_cache (periodics [HEAP0]); 3433 ANHE_at_cache (periodics [HEAP0]);
2094 downheap (periodics, periodiccnt, HEAP0); 3434 downheap (periodics, periodiccnt, HEAP0);
2095 } 3435 }
2096 else if (w->interval) 3436 else if (w->interval)
2097 { 3437 {
2098 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3438 periodic_recalc (EV_A_ w);
2099 /* if next trigger time is not sufficiently in the future, put it there */
2100 /* this might happen because of floating point inexactness */
2101 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2102 {
2103 ev_at (w) += w->interval;
2104
2105 /* if interval is unreasonably low we might still have a time in the past */
2106 /* so correct this. this will make the periodic very inexact, but the user */
2107 /* has effectively asked to get triggered more often than possible */
2108 if (ev_at (w) < ev_rt_now)
2109 ev_at (w) = ev_rt_now;
2110 }
2111
2112 ANHE_at_cache (periodics [HEAP0]); 3439 ANHE_at_cache (periodics [HEAP0]);
2113 downheap (periodics, periodiccnt, HEAP0); 3440 downheap (periodics, periodiccnt, HEAP0);
2114 } 3441 }
2115 else 3442 else
2116 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3443 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2123 feed_reverse_done (EV_A_ EV_PERIODIC); 3450 feed_reverse_done (EV_A_ EV_PERIODIC);
2124 } 3451 }
2125} 3452}
2126 3453
2127/* simply recalculate all periodics */ 3454/* simply recalculate all periodics */
2128/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3455/* TODO: maybe ensure that at least one event happens when jumping forward? */
2129static void noinline 3456noinline ecb_cold
3457static void
2130periodics_reschedule (EV_P) 3458periodics_reschedule (EV_P)
2131{ 3459{
2132 int i; 3460 int i;
2133 3461
2134 /* adjust periodics after time jump */ 3462 /* adjust periodics after time jump */
… …
2137 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3465 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2138 3466
2139 if (w->reschedule_cb) 3467 if (w->reschedule_cb)
2140 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3468 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2141 else if (w->interval) 3469 else if (w->interval)
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3470 periodic_recalc (EV_A_ w);
2143 3471
2144 ANHE_at_cache (periodics [i]); 3472 ANHE_at_cache (periodics [i]);
2145 } 3473 }
2146 3474
2147 reheap (periodics, periodiccnt); 3475 reheap (periodics, periodiccnt);
2148} 3476}
2149#endif 3477#endif
2150 3478
2151/* adjust all timers by a given offset */ 3479/* adjust all timers by a given offset */
2152static void noinline 3480noinline ecb_cold
3481static void
2153timers_reschedule (EV_P_ ev_tstamp adjust) 3482timers_reschedule (EV_P_ ev_tstamp adjust)
2154{ 3483{
2155 int i; 3484 int i;
2156 3485
2157 for (i = 0; i < timercnt; ++i) 3486 for (i = 0; i < timercnt; ++i)
… …
2161 ANHE_at_cache (*he); 3490 ANHE_at_cache (*he);
2162 } 3491 }
2163} 3492}
2164 3493
2165/* fetch new monotonic and realtime times from the kernel */ 3494/* fetch new monotonic and realtime times from the kernel */
2166/* also detetc if there was a timejump, and act accordingly */ 3495/* also detect if there was a timejump, and act accordingly */
2167inline_speed void 3496inline_speed void
2168time_update (EV_P_ ev_tstamp max_block) 3497time_update (EV_P_ ev_tstamp max_block)
2169{ 3498{
2170#if EV_USE_MONOTONIC 3499#if EV_USE_MONOTONIC
2171 if (expect_true (have_monotonic)) 3500 if (expect_true (have_monotonic))
… …
2194 * doesn't hurt either as we only do this on time-jumps or 3523 * doesn't hurt either as we only do this on time-jumps or
2195 * in the unlikely event of having been preempted here. 3524 * in the unlikely event of having been preempted here.
2196 */ 3525 */
2197 for (i = 4; --i; ) 3526 for (i = 4; --i; )
2198 { 3527 {
3528 ev_tstamp diff;
2199 rtmn_diff = ev_rt_now - mn_now; 3529 rtmn_diff = ev_rt_now - mn_now;
2200 3530
3531 diff = odiff - rtmn_diff;
3532
2201 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3533 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2202 return; /* all is well */ 3534 return; /* all is well */
2203 3535
2204 ev_rt_now = ev_time (); 3536 ev_rt_now = ev_time ();
2205 mn_now = get_clock (); 3537 mn_now = get_clock ();
2206 now_floor = mn_now; 3538 now_floor = mn_now;
… …
2228 3560
2229 mn_now = ev_rt_now; 3561 mn_now = ev_rt_now;
2230 } 3562 }
2231} 3563}
2232 3564
2233void 3565int
2234ev_loop (EV_P_ int flags) 3566ev_run (EV_P_ int flags)
2235{ 3567{
2236#if EV_MINIMAL < 2 3568#if EV_FEATURE_API
2237 ++loop_depth; 3569 ++loop_depth;
2238#endif 3570#endif
2239 3571
2240 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3572 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2241 3573
2242 loop_done = EVUNLOOP_CANCEL; 3574 loop_done = EVBREAK_CANCEL;
2243 3575
2244 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3576 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2245 3577
2246 do 3578 do
2247 { 3579 {
2248#if EV_VERIFY >= 2 3580#if EV_VERIFY >= 2
2249 ev_loop_verify (EV_A); 3581 ev_verify (EV_A);
2250#endif 3582#endif
2251 3583
2252#ifndef _WIN32 3584#ifndef _WIN32
2253 if (expect_false (curpid)) /* penalise the forking check even more */ 3585 if (expect_false (curpid)) /* penalise the forking check even more */
2254 if (expect_false (getpid () != curpid)) 3586 if (expect_false (getpid () != curpid))
… …
2266 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3598 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2267 EV_INVOKE_PENDING; 3599 EV_INVOKE_PENDING;
2268 } 3600 }
2269#endif 3601#endif
2270 3602
3603#if EV_PREPARE_ENABLE
2271 /* queue prepare watchers (and execute them) */ 3604 /* queue prepare watchers (and execute them) */
2272 if (expect_false (preparecnt)) 3605 if (expect_false (preparecnt))
2273 { 3606 {
2274 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3607 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2275 EV_INVOKE_PENDING; 3608 EV_INVOKE_PENDING;
2276 } 3609 }
3610#endif
2277 3611
2278 if (expect_false (loop_done)) 3612 if (expect_false (loop_done))
2279 break; 3613 break;
2280 3614
2281 /* we might have forked, so reify kernel state if necessary */ 3615 /* we might have forked, so reify kernel state if necessary */
… …
2288 /* calculate blocking time */ 3622 /* calculate blocking time */
2289 { 3623 {
2290 ev_tstamp waittime = 0.; 3624 ev_tstamp waittime = 0.;
2291 ev_tstamp sleeptime = 0.; 3625 ev_tstamp sleeptime = 0.;
2292 3626
3627 /* remember old timestamp for io_blocktime calculation */
3628 ev_tstamp prev_mn_now = mn_now;
3629
3630 /* update time to cancel out callback processing overhead */
3631 time_update (EV_A_ 1e100);
3632
3633 /* from now on, we want a pipe-wake-up */
3634 pipe_write_wanted = 1;
3635
3636 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3637
2293 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3638 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2294 { 3639 {
2295 /* remember old timestamp for io_blocktime calculation */
2296 ev_tstamp prev_mn_now = mn_now;
2297
2298 /* update time to cancel out callback processing overhead */
2299 time_update (EV_A_ 1e100);
2300
2301 waittime = MAX_BLOCKTIME; 3640 waittime = MAX_BLOCKTIME;
2302 3641
2303 if (timercnt) 3642 if (timercnt)
2304 { 3643 {
2305 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3644 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2306 if (waittime > to) waittime = to; 3645 if (waittime > to) waittime = to;
2307 } 3646 }
2308 3647
2309#if EV_PERIODIC_ENABLE 3648#if EV_PERIODIC_ENABLE
2310 if (periodiccnt) 3649 if (periodiccnt)
2311 { 3650 {
2312 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3651 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2313 if (waittime > to) waittime = to; 3652 if (waittime > to) waittime = to;
2314 } 3653 }
2315#endif 3654#endif
2316 3655
2317 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3656 /* don't let timeouts decrease the waittime below timeout_blocktime */
2318 if (expect_false (waittime < timeout_blocktime)) 3657 if (expect_false (waittime < timeout_blocktime))
2319 waittime = timeout_blocktime; 3658 waittime = timeout_blocktime;
3659
3660 /* at this point, we NEED to wait, so we have to ensure */
3661 /* to pass a minimum nonzero value to the backend */
3662 if (expect_false (waittime < backend_mintime))
3663 waittime = backend_mintime;
2320 3664
2321 /* extra check because io_blocktime is commonly 0 */ 3665 /* extra check because io_blocktime is commonly 0 */
2322 if (expect_false (io_blocktime)) 3666 if (expect_false (io_blocktime))
2323 { 3667 {
2324 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3668 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2325 3669
2326 if (sleeptime > waittime - backend_fudge) 3670 if (sleeptime > waittime - backend_mintime)
2327 sleeptime = waittime - backend_fudge; 3671 sleeptime = waittime - backend_mintime;
2328 3672
2329 if (expect_true (sleeptime > 0.)) 3673 if (expect_true (sleeptime > 0.))
2330 { 3674 {
2331 ev_sleep (sleeptime); 3675 ev_sleep (sleeptime);
2332 waittime -= sleeptime; 3676 waittime -= sleeptime;
2333 } 3677 }
2334 } 3678 }
2335 } 3679 }
2336 3680
2337#if EV_MINIMAL < 2 3681#if EV_FEATURE_API
2338 ++loop_count; 3682 ++loop_count;
2339#endif 3683#endif
2340 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3684 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2341 backend_poll (EV_A_ waittime); 3685 backend_poll (EV_A_ waittime);
2342 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3686 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3687
3688 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3689
3690 ECB_MEMORY_FENCE_ACQUIRE;
3691 if (pipe_write_skipped)
3692 {
3693 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3694 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3695 }
3696
2343 3697
2344 /* update ev_rt_now, do magic */ 3698 /* update ev_rt_now, do magic */
2345 time_update (EV_A_ waittime + sleeptime); 3699 time_update (EV_A_ waittime + sleeptime);
2346 } 3700 }
2347 3701
… …
2354#if EV_IDLE_ENABLE 3708#if EV_IDLE_ENABLE
2355 /* queue idle watchers unless other events are pending */ 3709 /* queue idle watchers unless other events are pending */
2356 idle_reify (EV_A); 3710 idle_reify (EV_A);
2357#endif 3711#endif
2358 3712
3713#if EV_CHECK_ENABLE
2359 /* queue check watchers, to be executed first */ 3714 /* queue check watchers, to be executed first */
2360 if (expect_false (checkcnt)) 3715 if (expect_false (checkcnt))
2361 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3716 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3717#endif
2362 3718
2363 EV_INVOKE_PENDING; 3719 EV_INVOKE_PENDING;
2364 } 3720 }
2365 while (expect_true ( 3721 while (expect_true (
2366 activecnt 3722 activecnt
2367 && !loop_done 3723 && !loop_done
2368 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3724 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2369 )); 3725 ));
2370 3726
2371 if (loop_done == EVUNLOOP_ONE) 3727 if (loop_done == EVBREAK_ONE)
2372 loop_done = EVUNLOOP_CANCEL; 3728 loop_done = EVBREAK_CANCEL;
2373 3729
2374#if EV_MINIMAL < 2 3730#if EV_FEATURE_API
2375 --loop_depth; 3731 --loop_depth;
2376#endif 3732#endif
2377}
2378 3733
3734 return activecnt;
3735}
3736
2379void 3737void
2380ev_unloop (EV_P_ int how) 3738ev_break (EV_P_ int how) EV_THROW
2381{ 3739{
2382 loop_done = how; 3740 loop_done = how;
2383} 3741}
2384 3742
2385void 3743void
2386ev_ref (EV_P) 3744ev_ref (EV_P) EV_THROW
2387{ 3745{
2388 ++activecnt; 3746 ++activecnt;
2389} 3747}
2390 3748
2391void 3749void
2392ev_unref (EV_P) 3750ev_unref (EV_P) EV_THROW
2393{ 3751{
2394 --activecnt; 3752 --activecnt;
2395} 3753}
2396 3754
2397void 3755void
2398ev_now_update (EV_P) 3756ev_now_update (EV_P) EV_THROW
2399{ 3757{
2400 time_update (EV_A_ 1e100); 3758 time_update (EV_A_ 1e100);
2401} 3759}
2402 3760
2403void 3761void
2404ev_suspend (EV_P) 3762ev_suspend (EV_P) EV_THROW
2405{ 3763{
2406 ev_now_update (EV_A); 3764 ev_now_update (EV_A);
2407} 3765}
2408 3766
2409void 3767void
2410ev_resume (EV_P) 3768ev_resume (EV_P) EV_THROW
2411{ 3769{
2412 ev_tstamp mn_prev = mn_now; 3770 ev_tstamp mn_prev = mn_now;
2413 3771
2414 ev_now_update (EV_A); 3772 ev_now_update (EV_A);
2415 timers_reschedule (EV_A_ mn_now - mn_prev); 3773 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2454 w->pending = 0; 3812 w->pending = 0;
2455 } 3813 }
2456} 3814}
2457 3815
2458int 3816int
2459ev_clear_pending (EV_P_ void *w) 3817ev_clear_pending (EV_P_ void *w) EV_THROW
2460{ 3818{
2461 W w_ = (W)w; 3819 W w_ = (W)w;
2462 int pending = w_->pending; 3820 int pending = w_->pending;
2463 3821
2464 if (expect_true (pending)) 3822 if (expect_true (pending))
… …
2496 w->active = 0; 3854 w->active = 0;
2497} 3855}
2498 3856
2499/*****************************************************************************/ 3857/*****************************************************************************/
2500 3858
2501void noinline 3859noinline
3860void
2502ev_io_start (EV_P_ ev_io *w) 3861ev_io_start (EV_P_ ev_io *w) EV_THROW
2503{ 3862{
2504 int fd = w->fd; 3863 int fd = w->fd;
2505 3864
2506 if (expect_false (ev_is_active (w))) 3865 if (expect_false (ev_is_active (w)))
2507 return; 3866 return;
2508 3867
2509 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3868 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2510 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3869 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2511 3870
2512 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
2513 3872
2514 ev_start (EV_A_ (W)w, 1); 3873 ev_start (EV_A_ (W)w, 1);
2515 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3874 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2516 wlist_add (&anfds[fd].head, (WL)w); 3875 wlist_add (&anfds[fd].head, (WL)w);
2517 3876
3877 /* common bug, apparently */
3878 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3879
2518 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3880 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2519 w->events &= ~EV__IOFDSET; 3881 w->events &= ~EV__IOFDSET;
2520 3882
2521 EV_FREQUENT_CHECK; 3883 EV_FREQUENT_CHECK;
2522} 3884}
2523 3885
2524void noinline 3886noinline
3887void
2525ev_io_stop (EV_P_ ev_io *w) 3888ev_io_stop (EV_P_ ev_io *w) EV_THROW
2526{ 3889{
2527 clear_pending (EV_A_ (W)w); 3890 clear_pending (EV_A_ (W)w);
2528 if (expect_false (!ev_is_active (w))) 3891 if (expect_false (!ev_is_active (w)))
2529 return; 3892 return;
2530 3893
… …
2533 EV_FREQUENT_CHECK; 3896 EV_FREQUENT_CHECK;
2534 3897
2535 wlist_del (&anfds[w->fd].head, (WL)w); 3898 wlist_del (&anfds[w->fd].head, (WL)w);
2536 ev_stop (EV_A_ (W)w); 3899 ev_stop (EV_A_ (W)w);
2537 3900
2538 fd_change (EV_A_ w->fd, 1); 3901 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2539 3902
2540 EV_FREQUENT_CHECK; 3903 EV_FREQUENT_CHECK;
2541} 3904}
2542 3905
2543void noinline 3906noinline
3907void
2544ev_timer_start (EV_P_ ev_timer *w) 3908ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2545{ 3909{
2546 if (expect_false (ev_is_active (w))) 3910 if (expect_false (ev_is_active (w)))
2547 return; 3911 return;
2548 3912
2549 ev_at (w) += mn_now; 3913 ev_at (w) += mn_now;
… …
2562 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
2563 3927
2564 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3928 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2565} 3929}
2566 3930
2567void noinline 3931noinline
3932void
2568ev_timer_stop (EV_P_ ev_timer *w) 3933ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2569{ 3934{
2570 clear_pending (EV_A_ (W)w); 3935 clear_pending (EV_A_ (W)w);
2571 if (expect_false (!ev_is_active (w))) 3936 if (expect_false (!ev_is_active (w)))
2572 return; 3937 return;
2573 3938
… …
2585 timers [active] = timers [timercnt + HEAP0]; 3950 timers [active] = timers [timercnt + HEAP0];
2586 adjustheap (timers, timercnt, active); 3951 adjustheap (timers, timercnt, active);
2587 } 3952 }
2588 } 3953 }
2589 3954
2590 EV_FREQUENT_CHECK;
2591
2592 ev_at (w) -= mn_now; 3955 ev_at (w) -= mn_now;
2593 3956
2594 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
2595}
2596 3958
3959 EV_FREQUENT_CHECK;
3960}
3961
2597void noinline 3962noinline
3963void
2598ev_timer_again (EV_P_ ev_timer *w) 3964ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2599{ 3965{
2600 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3967
3968 clear_pending (EV_A_ (W)w);
2601 3969
2602 if (ev_is_active (w)) 3970 if (ev_is_active (w))
2603 { 3971 {
2604 if (w->repeat) 3972 if (w->repeat)
2605 { 3973 {
… …
2618 3986
2619 EV_FREQUENT_CHECK; 3987 EV_FREQUENT_CHECK;
2620} 3988}
2621 3989
2622ev_tstamp 3990ev_tstamp
2623ev_timer_remaining (EV_P_ ev_timer *w) 3991ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2624{ 3992{
2625 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3993 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2626} 3994}
2627 3995
2628#if EV_PERIODIC_ENABLE 3996#if EV_PERIODIC_ENABLE
2629void noinline 3997noinline
3998void
2630ev_periodic_start (EV_P_ ev_periodic *w) 3999ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2631{ 4000{
2632 if (expect_false (ev_is_active (w))) 4001 if (expect_false (ev_is_active (w)))
2633 return; 4002 return;
2634 4003
2635 if (w->reschedule_cb) 4004 if (w->reschedule_cb)
2636 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4005 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2637 else if (w->interval) 4006 else if (w->interval)
2638 { 4007 {
2639 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4008 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2640 /* this formula differs from the one in periodic_reify because we do not always round up */ 4009 periodic_recalc (EV_A_ w);
2641 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2642 } 4010 }
2643 else 4011 else
2644 ev_at (w) = w->offset; 4012 ev_at (w) = w->offset;
2645 4013
2646 EV_FREQUENT_CHECK; 4014 EV_FREQUENT_CHECK;
… …
2655 EV_FREQUENT_CHECK; 4023 EV_FREQUENT_CHECK;
2656 4024
2657 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4025 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2658} 4026}
2659 4027
2660void noinline 4028noinline
4029void
2661ev_periodic_stop (EV_P_ ev_periodic *w) 4030ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2662{ 4031{
2663 clear_pending (EV_A_ (W)w); 4032 clear_pending (EV_A_ (W)w);
2664 if (expect_false (!ev_is_active (w))) 4033 if (expect_false (!ev_is_active (w)))
2665 return; 4034 return;
2666 4035
… …
2678 periodics [active] = periodics [periodiccnt + HEAP0]; 4047 periodics [active] = periodics [periodiccnt + HEAP0];
2679 adjustheap (periodics, periodiccnt, active); 4048 adjustheap (periodics, periodiccnt, active);
2680 } 4049 }
2681 } 4050 }
2682 4051
2683 EV_FREQUENT_CHECK;
2684
2685 ev_stop (EV_A_ (W)w); 4052 ev_stop (EV_A_ (W)w);
2686}
2687 4053
4054 EV_FREQUENT_CHECK;
4055}
4056
2688void noinline 4057noinline
4058void
2689ev_periodic_again (EV_P_ ev_periodic *w) 4059ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2690{ 4060{
2691 /* TODO: use adjustheap and recalculation */ 4061 /* TODO: use adjustheap and recalculation */
2692 ev_periodic_stop (EV_A_ w); 4062 ev_periodic_stop (EV_A_ w);
2693 ev_periodic_start (EV_A_ w); 4063 ev_periodic_start (EV_A_ w);
2694} 4064}
… …
2696 4066
2697#ifndef SA_RESTART 4067#ifndef SA_RESTART
2698# define SA_RESTART 0 4068# define SA_RESTART 0
2699#endif 4069#endif
2700 4070
4071#if EV_SIGNAL_ENABLE
4072
2701void noinline 4073noinline
4074void
2702ev_signal_start (EV_P_ ev_signal *w) 4075ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2703{ 4076{
2704 if (expect_false (ev_is_active (w))) 4077 if (expect_false (ev_is_active (w)))
2705 return; 4078 return;
2706 4079
2707 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4080 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2709#if EV_MULTIPLICITY 4082#if EV_MULTIPLICITY
2710 assert (("libev: a signal must not be attached to two different loops", 4083 assert (("libev: a signal must not be attached to two different loops",
2711 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4084 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2712 4085
2713 signals [w->signum - 1].loop = EV_A; 4086 signals [w->signum - 1].loop = EV_A;
4087 ECB_MEMORY_FENCE_RELEASE;
2714#endif 4088#endif
2715 4089
2716 EV_FREQUENT_CHECK; 4090 EV_FREQUENT_CHECK;
2717 4091
2718#if EV_USE_SIGNALFD 4092#if EV_USE_SIGNALFD
… …
2751 if (!((WL)w)->next) 4125 if (!((WL)w)->next)
2752# if EV_USE_SIGNALFD 4126# if EV_USE_SIGNALFD
2753 if (sigfd < 0) /*TODO*/ 4127 if (sigfd < 0) /*TODO*/
2754# endif 4128# endif
2755 { 4129 {
2756# if _WIN32 4130# ifdef _WIN32
4131 evpipe_init (EV_A);
4132
2757 signal (w->signum, ev_sighandler); 4133 signal (w->signum, ev_sighandler);
2758# else 4134# else
2759 struct sigaction sa; 4135 struct sigaction sa;
2760 4136
2761 evpipe_init (EV_A); 4137 evpipe_init (EV_A);
… …
2763 sa.sa_handler = ev_sighandler; 4139 sa.sa_handler = ev_sighandler;
2764 sigfillset (&sa.sa_mask); 4140 sigfillset (&sa.sa_mask);
2765 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4141 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2766 sigaction (w->signum, &sa, 0); 4142 sigaction (w->signum, &sa, 0);
2767 4143
4144 if (origflags & EVFLAG_NOSIGMASK)
4145 {
2768 sigemptyset (&sa.sa_mask); 4146 sigemptyset (&sa.sa_mask);
2769 sigaddset (&sa.sa_mask, w->signum); 4147 sigaddset (&sa.sa_mask, w->signum);
2770 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4148 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4149 }
2771#endif 4150#endif
2772 } 4151 }
2773 4152
2774 EV_FREQUENT_CHECK; 4153 EV_FREQUENT_CHECK;
2775} 4154}
2776 4155
2777void noinline 4156noinline
4157void
2778ev_signal_stop (EV_P_ ev_signal *w) 4158ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2779{ 4159{
2780 clear_pending (EV_A_ (W)w); 4160 clear_pending (EV_A_ (W)w);
2781 if (expect_false (!ev_is_active (w))) 4161 if (expect_false (!ev_is_active (w)))
2782 return; 4162 return;
2783 4163
… …
2792 signals [w->signum - 1].loop = 0; /* unattach from signal */ 4172 signals [w->signum - 1].loop = 0; /* unattach from signal */
2793#endif 4173#endif
2794#if EV_USE_SIGNALFD 4174#if EV_USE_SIGNALFD
2795 if (sigfd >= 0) 4175 if (sigfd >= 0)
2796 { 4176 {
2797 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4177 sigset_t ss;
4178
4179 sigemptyset (&ss);
4180 sigaddset (&ss, w->signum);
2798 sigdelset (&sigfd_set, w->signum); 4181 sigdelset (&sigfd_set, w->signum);
4182
2799 signalfd (sigfd, &sigfd_set, 0); 4183 signalfd (sigfd, &sigfd_set, 0);
2800 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4184 sigprocmask (SIG_UNBLOCK, &ss, 0);
2801 /*TODO: maybe unblock signal? */
2802 } 4185 }
2803 else 4186 else
2804#endif 4187#endif
2805 signal (w->signum, SIG_DFL); 4188 signal (w->signum, SIG_DFL);
2806 } 4189 }
2807 4190
2808 EV_FREQUENT_CHECK; 4191 EV_FREQUENT_CHECK;
2809} 4192}
2810 4193
4194#endif
4195
4196#if EV_CHILD_ENABLE
4197
2811void 4198void
2812ev_child_start (EV_P_ ev_child *w) 4199ev_child_start (EV_P_ ev_child *w) EV_THROW
2813{ 4200{
2814#if EV_MULTIPLICITY 4201#if EV_MULTIPLICITY
2815 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4202 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2816#endif 4203#endif
2817 if (expect_false (ev_is_active (w))) 4204 if (expect_false (ev_is_active (w)))
2818 return; 4205 return;
2819 4206
2820 EV_FREQUENT_CHECK; 4207 EV_FREQUENT_CHECK;
2821 4208
2822 ev_start (EV_A_ (W)w, 1); 4209 ev_start (EV_A_ (W)w, 1);
2823 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4210 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2824 4211
2825 EV_FREQUENT_CHECK; 4212 EV_FREQUENT_CHECK;
2826} 4213}
2827 4214
2828void 4215void
2829ev_child_stop (EV_P_ ev_child *w) 4216ev_child_stop (EV_P_ ev_child *w) EV_THROW
2830{ 4217{
2831 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2832 if (expect_false (!ev_is_active (w))) 4219 if (expect_false (!ev_is_active (w)))
2833 return; 4220 return;
2834 4221
2835 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2836 4223
2837 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4224 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2838 ev_stop (EV_A_ (W)w); 4225 ev_stop (EV_A_ (W)w);
2839 4226
2840 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
2841} 4228}
4229
4230#endif
2842 4231
2843#if EV_STAT_ENABLE 4232#if EV_STAT_ENABLE
2844 4233
2845# ifdef _WIN32 4234# ifdef _WIN32
2846# undef lstat 4235# undef lstat
… …
2849 4238
2850#define DEF_STAT_INTERVAL 5.0074891 4239#define DEF_STAT_INTERVAL 5.0074891
2851#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4240#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2852#define MIN_STAT_INTERVAL 0.1074891 4241#define MIN_STAT_INTERVAL 0.1074891
2853 4242
2854static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4243noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2855 4244
2856#if EV_USE_INOTIFY 4245#if EV_USE_INOTIFY
2857# define EV_INOTIFY_BUFSIZE 8192
2858 4246
2859static void noinline 4247/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4248# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4249
4250noinline
4251static void
2860infy_add (EV_P_ ev_stat *w) 4252infy_add (EV_P_ ev_stat *w)
2861{ 4253{
2862 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4254 w->wd = inotify_add_watch (fs_fd, w->path,
4255 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4256 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4257 | IN_DONT_FOLLOW | IN_MASK_ADD);
2863 4258
2864 if (w->wd < 0) 4259 if (w->wd >= 0)
4260 {
4261 struct statfs sfs;
4262
4263 /* now local changes will be tracked by inotify, but remote changes won't */
4264 /* unless the filesystem is known to be local, we therefore still poll */
4265 /* also do poll on <2.6.25, but with normal frequency */
4266
4267 if (!fs_2625)
4268 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4269 else if (!statfs (w->path, &sfs)
4270 && (sfs.f_type == 0x1373 /* devfs */
4271 || sfs.f_type == 0x4006 /* fat */
4272 || sfs.f_type == 0x4d44 /* msdos */
4273 || sfs.f_type == 0xEF53 /* ext2/3 */
4274 || sfs.f_type == 0x72b6 /* jffs2 */
4275 || sfs.f_type == 0x858458f6 /* ramfs */
4276 || sfs.f_type == 0x5346544e /* ntfs */
4277 || sfs.f_type == 0x3153464a /* jfs */
4278 || sfs.f_type == 0x9123683e /* btrfs */
4279 || sfs.f_type == 0x52654973 /* reiser3 */
4280 || sfs.f_type == 0x01021994 /* tmpfs */
4281 || sfs.f_type == 0x58465342 /* xfs */))
4282 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4283 else
4284 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2865 { 4285 }
4286 else
4287 {
4288 /* can't use inotify, continue to stat */
2866 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4289 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2867 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2868 4290
2869 /* monitor some parent directory for speedup hints */ 4291 /* if path is not there, monitor some parent directory for speedup hints */
2870 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4292 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2871 /* but an efficiency issue only */ 4293 /* but an efficiency issue only */
2872 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4294 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2873 { 4295 {
2874 char path [4096]; 4296 char path [4096];
… …
2884 if (!pend || pend == path) 4306 if (!pend || pend == path)
2885 break; 4307 break;
2886 4308
2887 *pend = 0; 4309 *pend = 0;
2888 w->wd = inotify_add_watch (fs_fd, path, mask); 4310 w->wd = inotify_add_watch (fs_fd, path, mask);
2889 } 4311 }
2890 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4312 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2891 } 4313 }
2892 } 4314 }
2893 4315
2894 if (w->wd >= 0) 4316 if (w->wd >= 0)
2895 {
2896 struct statfs sfs;
2897
2898 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4317 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2899 4318
2900 /* now local changes will be tracked by inotify, but remote changes won't */ 4319 /* now re-arm timer, if required */
2901 /* unless the filesystem it known to be local, we therefore still poll */ 4320 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2902 /* also do poll on <2.6.25, but with normal frequency */
2903
2904 if (fs_2625 && !statfs (w->path, &sfs))
2905 if (sfs.f_type == 0x1373 /* devfs */
2906 || sfs.f_type == 0xEF53 /* ext2/3 */
2907 || sfs.f_type == 0x3153464a /* jfs */
2908 || sfs.f_type == 0x52654973 /* reiser3 */
2909 || sfs.f_type == 0x01021994 /* tempfs */
2910 || sfs.f_type == 0x58465342 /* xfs */)
2911 return;
2912
2913 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2914 ev_timer_again (EV_A_ &w->timer); 4321 ev_timer_again (EV_A_ &w->timer);
2915 } 4322 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2916} 4323}
2917 4324
2918static void noinline 4325noinline
4326static void
2919infy_del (EV_P_ ev_stat *w) 4327infy_del (EV_P_ ev_stat *w)
2920{ 4328{
2921 int slot; 4329 int slot;
2922 int wd = w->wd; 4330 int wd = w->wd;
2923 4331
2924 if (wd < 0) 4332 if (wd < 0)
2925 return; 4333 return;
2926 4334
2927 w->wd = -2; 4335 w->wd = -2;
2928 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4336 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2929 wlist_del (&fs_hash [slot].head, (WL)w); 4337 wlist_del (&fs_hash [slot].head, (WL)w);
2930 4338
2931 /* remove this watcher, if others are watching it, they will rearm */ 4339 /* remove this watcher, if others are watching it, they will rearm */
2932 inotify_rm_watch (fs_fd, wd); 4340 inotify_rm_watch (fs_fd, wd);
2933} 4341}
2934 4342
2935static void noinline 4343noinline
4344static void
2936infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4345infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2937{ 4346{
2938 if (slot < 0) 4347 if (slot < 0)
2939 /* overflow, need to check for all hash slots */ 4348 /* overflow, need to check for all hash slots */
2940 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4349 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2941 infy_wd (EV_A_ slot, wd, ev); 4350 infy_wd (EV_A_ slot, wd, ev);
2942 else 4351 else
2943 { 4352 {
2944 WL w_; 4353 WL w_;
2945 4354
2946 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4355 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2947 { 4356 {
2948 ev_stat *w = (ev_stat *)w_; 4357 ev_stat *w = (ev_stat *)w_;
2949 w_ = w_->next; /* lets us remove this watcher and all before it */ 4358 w_ = w_->next; /* lets us remove this watcher and all before it */
2950 4359
2951 if (w->wd == wd || wd == -1) 4360 if (w->wd == wd || wd == -1)
2952 { 4361 {
2953 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4362 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2954 { 4363 {
2955 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4364 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2956 w->wd = -1; 4365 w->wd = -1;
2957 infy_add (EV_A_ w); /* re-add, no matter what */ 4366 infy_add (EV_A_ w); /* re-add, no matter what */
2958 } 4367 }
2959 4368
2960 stat_timer_cb (EV_A_ &w->timer, 0); 4369 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2965 4374
2966static void 4375static void
2967infy_cb (EV_P_ ev_io *w, int revents) 4376infy_cb (EV_P_ ev_io *w, int revents)
2968{ 4377{
2969 char buf [EV_INOTIFY_BUFSIZE]; 4378 char buf [EV_INOTIFY_BUFSIZE];
2970 struct inotify_event *ev = (struct inotify_event *)buf;
2971 int ofs; 4379 int ofs;
2972 int len = read (fs_fd, buf, sizeof (buf)); 4380 int len = read (fs_fd, buf, sizeof (buf));
2973 4381
2974 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4382 for (ofs = 0; ofs < len; )
4383 {
4384 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2975 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4385 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4386 ofs += sizeof (struct inotify_event) + ev->len;
4387 }
2976} 4388}
2977 4389
2978inline_size void 4390inline_size ecb_cold
4391void
2979check_2625 (EV_P) 4392ev_check_2625 (EV_P)
2980{ 4393{
2981 /* kernels < 2.6.25 are borked 4394 /* kernels < 2.6.25 are borked
2982 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4395 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2983 */ 4396 */
2984 struct utsname buf; 4397 if (ev_linux_version () < 0x020619)
2985 int major, minor, micro;
2986
2987 if (uname (&buf))
2988 return;
2989
2990 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2991 return;
2992
2993 if (major < 2
2994 || (major == 2 && minor < 6)
2995 || (major == 2 && minor == 6 && micro < 25))
2996 return; 4398 return;
2997 4399
2998 fs_2625 = 1; 4400 fs_2625 = 1;
2999} 4401}
3000 4402
3001inline_size int 4403inline_size int
3002infy_newfd (void) 4404infy_newfd (void)
3003{ 4405{
3004#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4406#if defined IN_CLOEXEC && defined IN_NONBLOCK
3005 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4407 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3006 if (fd >= 0) 4408 if (fd >= 0)
3007 return fd; 4409 return fd;
3008#endif 4410#endif
3009 return inotify_init (); 4411 return inotify_init ();
… …
3015 if (fs_fd != -2) 4417 if (fs_fd != -2)
3016 return; 4418 return;
3017 4419
3018 fs_fd = -1; 4420 fs_fd = -1;
3019 4421
3020 check_2625 (EV_A); 4422 ev_check_2625 (EV_A);
3021 4423
3022 fs_fd = infy_newfd (); 4424 fs_fd = infy_newfd ();
3023 4425
3024 if (fs_fd >= 0) 4426 if (fs_fd >= 0)
3025 { 4427 {
3026 fd_intern (fs_fd); 4428 fd_intern (fs_fd);
3027 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4429 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3028 ev_set_priority (&fs_w, EV_MAXPRI); 4430 ev_set_priority (&fs_w, EV_MAXPRI);
3029 ev_io_start (EV_A_ &fs_w); 4431 ev_io_start (EV_A_ &fs_w);
4432 ev_unref (EV_A);
3030 } 4433 }
3031} 4434}
3032 4435
3033inline_size void 4436inline_size void
3034infy_fork (EV_P) 4437infy_fork (EV_P)
… …
3036 int slot; 4439 int slot;
3037 4440
3038 if (fs_fd < 0) 4441 if (fs_fd < 0)
3039 return; 4442 return;
3040 4443
4444 ev_ref (EV_A);
3041 ev_io_stop (EV_A_ &fs_w); 4445 ev_io_stop (EV_A_ &fs_w);
3042 close (fs_fd); 4446 close (fs_fd);
3043 fs_fd = infy_newfd (); 4447 fs_fd = infy_newfd ();
3044 4448
3045 if (fs_fd >= 0) 4449 if (fs_fd >= 0)
3046 { 4450 {
3047 fd_intern (fs_fd); 4451 fd_intern (fs_fd);
3048 ev_io_set (&fs_w, fs_fd, EV_READ); 4452 ev_io_set (&fs_w, fs_fd, EV_READ);
3049 ev_io_start (EV_A_ &fs_w); 4453 ev_io_start (EV_A_ &fs_w);
4454 ev_unref (EV_A);
3050 } 4455 }
3051 4456
3052 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4457 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3053 { 4458 {
3054 WL w_ = fs_hash [slot].head; 4459 WL w_ = fs_hash [slot].head;
3055 fs_hash [slot].head = 0; 4460 fs_hash [slot].head = 0;
3056 4461
3057 while (w_) 4462 while (w_)
… …
3062 w->wd = -1; 4467 w->wd = -1;
3063 4468
3064 if (fs_fd >= 0) 4469 if (fs_fd >= 0)
3065 infy_add (EV_A_ w); /* re-add, no matter what */ 4470 infy_add (EV_A_ w); /* re-add, no matter what */
3066 else 4471 else
4472 {
4473 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4474 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3067 ev_timer_again (EV_A_ &w->timer); 4475 ev_timer_again (EV_A_ &w->timer);
4476 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4477 }
3068 } 4478 }
3069 } 4479 }
3070} 4480}
3071 4481
3072#endif 4482#endif
… …
3076#else 4486#else
3077# define EV_LSTAT(p,b) lstat (p, b) 4487# define EV_LSTAT(p,b) lstat (p, b)
3078#endif 4488#endif
3079 4489
3080void 4490void
3081ev_stat_stat (EV_P_ ev_stat *w) 4491ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3082{ 4492{
3083 if (lstat (w->path, &w->attr) < 0) 4493 if (lstat (w->path, &w->attr) < 0)
3084 w->attr.st_nlink = 0; 4494 w->attr.st_nlink = 0;
3085 else if (!w->attr.st_nlink) 4495 else if (!w->attr.st_nlink)
3086 w->attr.st_nlink = 1; 4496 w->attr.st_nlink = 1;
3087} 4497}
3088 4498
3089static void noinline 4499noinline
4500static void
3090stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4501stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3091{ 4502{
3092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4503 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3093 4504
3094 /* we copy this here each the time so that */ 4505 ev_statdata prev = w->attr;
3095 /* prev has the old value when the callback gets invoked */
3096 w->prev = w->attr;
3097 ev_stat_stat (EV_A_ w); 4506 ev_stat_stat (EV_A_ w);
3098 4507
3099 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4508 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3100 if ( 4509 if (
3101 w->prev.st_dev != w->attr.st_dev 4510 prev.st_dev != w->attr.st_dev
3102 || w->prev.st_ino != w->attr.st_ino 4511 || prev.st_ino != w->attr.st_ino
3103 || w->prev.st_mode != w->attr.st_mode 4512 || prev.st_mode != w->attr.st_mode
3104 || w->prev.st_nlink != w->attr.st_nlink 4513 || prev.st_nlink != w->attr.st_nlink
3105 || w->prev.st_uid != w->attr.st_uid 4514 || prev.st_uid != w->attr.st_uid
3106 || w->prev.st_gid != w->attr.st_gid 4515 || prev.st_gid != w->attr.st_gid
3107 || w->prev.st_rdev != w->attr.st_rdev 4516 || prev.st_rdev != w->attr.st_rdev
3108 || w->prev.st_size != w->attr.st_size 4517 || prev.st_size != w->attr.st_size
3109 || w->prev.st_atime != w->attr.st_atime 4518 || prev.st_atime != w->attr.st_atime
3110 || w->prev.st_mtime != w->attr.st_mtime 4519 || prev.st_mtime != w->attr.st_mtime
3111 || w->prev.st_ctime != w->attr.st_ctime 4520 || prev.st_ctime != w->attr.st_ctime
3112 ) { 4521 ) {
4522 /* we only update w->prev on actual differences */
4523 /* in case we test more often than invoke the callback, */
4524 /* to ensure that prev is always different to attr */
4525 w->prev = prev;
4526
3113 #if EV_USE_INOTIFY 4527 #if EV_USE_INOTIFY
3114 if (fs_fd >= 0) 4528 if (fs_fd >= 0)
3115 { 4529 {
3116 infy_del (EV_A_ w); 4530 infy_del (EV_A_ w);
3117 infy_add (EV_A_ w); 4531 infy_add (EV_A_ w);
… …
3122 ev_feed_event (EV_A_ w, EV_STAT); 4536 ev_feed_event (EV_A_ w, EV_STAT);
3123 } 4537 }
3124} 4538}
3125 4539
3126void 4540void
3127ev_stat_start (EV_P_ ev_stat *w) 4541ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3128{ 4542{
3129 if (expect_false (ev_is_active (w))) 4543 if (expect_false (ev_is_active (w)))
3130 return; 4544 return;
3131 4545
3132 ev_stat_stat (EV_A_ w); 4546 ev_stat_stat (EV_A_ w);
… …
3142 4556
3143 if (fs_fd >= 0) 4557 if (fs_fd >= 0)
3144 infy_add (EV_A_ w); 4558 infy_add (EV_A_ w);
3145 else 4559 else
3146#endif 4560#endif
4561 {
3147 ev_timer_again (EV_A_ &w->timer); 4562 ev_timer_again (EV_A_ &w->timer);
4563 ev_unref (EV_A);
4564 }
3148 4565
3149 ev_start (EV_A_ (W)w, 1); 4566 ev_start (EV_A_ (W)w, 1);
3150 4567
3151 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
3152} 4569}
3153 4570
3154void 4571void
3155ev_stat_stop (EV_P_ ev_stat *w) 4572ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3156{ 4573{
3157 clear_pending (EV_A_ (W)w); 4574 clear_pending (EV_A_ (W)w);
3158 if (expect_false (!ev_is_active (w))) 4575 if (expect_false (!ev_is_active (w)))
3159 return; 4576 return;
3160 4577
3161 EV_FREQUENT_CHECK; 4578 EV_FREQUENT_CHECK;
3162 4579
3163#if EV_USE_INOTIFY 4580#if EV_USE_INOTIFY
3164 infy_del (EV_A_ w); 4581 infy_del (EV_A_ w);
3165#endif 4582#endif
4583
4584 if (ev_is_active (&w->timer))
4585 {
4586 ev_ref (EV_A);
3166 ev_timer_stop (EV_A_ &w->timer); 4587 ev_timer_stop (EV_A_ &w->timer);
4588 }
3167 4589
3168 ev_stop (EV_A_ (W)w); 4590 ev_stop (EV_A_ (W)w);
3169 4591
3170 EV_FREQUENT_CHECK; 4592 EV_FREQUENT_CHECK;
3171} 4593}
3172#endif 4594#endif
3173 4595
3174#if EV_IDLE_ENABLE 4596#if EV_IDLE_ENABLE
3175void 4597void
3176ev_idle_start (EV_P_ ev_idle *w) 4598ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3177{ 4599{
3178 if (expect_false (ev_is_active (w))) 4600 if (expect_false (ev_is_active (w)))
3179 return; 4601 return;
3180 4602
3181 pri_adjust (EV_A_ (W)w); 4603 pri_adjust (EV_A_ (W)w);
… …
3194 4616
3195 EV_FREQUENT_CHECK; 4617 EV_FREQUENT_CHECK;
3196} 4618}
3197 4619
3198void 4620void
3199ev_idle_stop (EV_P_ ev_idle *w) 4621ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3200{ 4622{
3201 clear_pending (EV_A_ (W)w); 4623 clear_pending (EV_A_ (W)w);
3202 if (expect_false (!ev_is_active (w))) 4624 if (expect_false (!ev_is_active (w)))
3203 return; 4625 return;
3204 4626
… …
3216 4638
3217 EV_FREQUENT_CHECK; 4639 EV_FREQUENT_CHECK;
3218} 4640}
3219#endif 4641#endif
3220 4642
4643#if EV_PREPARE_ENABLE
3221void 4644void
3222ev_prepare_start (EV_P_ ev_prepare *w) 4645ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3223{ 4646{
3224 if (expect_false (ev_is_active (w))) 4647 if (expect_false (ev_is_active (w)))
3225 return; 4648 return;
3226 4649
3227 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
… …
3232 4655
3233 EV_FREQUENT_CHECK; 4656 EV_FREQUENT_CHECK;
3234} 4657}
3235 4658
3236void 4659void
3237ev_prepare_stop (EV_P_ ev_prepare *w) 4660ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3238{ 4661{
3239 clear_pending (EV_A_ (W)w); 4662 clear_pending (EV_A_ (W)w);
3240 if (expect_false (!ev_is_active (w))) 4663 if (expect_false (!ev_is_active (w)))
3241 return; 4664 return;
3242 4665
… …
3251 4674
3252 ev_stop (EV_A_ (W)w); 4675 ev_stop (EV_A_ (W)w);
3253 4676
3254 EV_FREQUENT_CHECK; 4677 EV_FREQUENT_CHECK;
3255} 4678}
4679#endif
3256 4680
4681#if EV_CHECK_ENABLE
3257void 4682void
3258ev_check_start (EV_P_ ev_check *w) 4683ev_check_start (EV_P_ ev_check *w) EV_THROW
3259{ 4684{
3260 if (expect_false (ev_is_active (w))) 4685 if (expect_false (ev_is_active (w)))
3261 return; 4686 return;
3262 4687
3263 EV_FREQUENT_CHECK; 4688 EV_FREQUENT_CHECK;
… …
3268 4693
3269 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
3270} 4695}
3271 4696
3272void 4697void
3273ev_check_stop (EV_P_ ev_check *w) 4698ev_check_stop (EV_P_ ev_check *w) EV_THROW
3274{ 4699{
3275 clear_pending (EV_A_ (W)w); 4700 clear_pending (EV_A_ (W)w);
3276 if (expect_false (!ev_is_active (w))) 4701 if (expect_false (!ev_is_active (w)))
3277 return; 4702 return;
3278 4703
… …
3287 4712
3288 ev_stop (EV_A_ (W)w); 4713 ev_stop (EV_A_ (W)w);
3289 4714
3290 EV_FREQUENT_CHECK; 4715 EV_FREQUENT_CHECK;
3291} 4716}
4717#endif
3292 4718
3293#if EV_EMBED_ENABLE 4719#if EV_EMBED_ENABLE
3294void noinline 4720noinline
4721void
3295ev_embed_sweep (EV_P_ ev_embed *w) 4722ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3296{ 4723{
3297 ev_loop (w->other, EVLOOP_NONBLOCK); 4724 ev_run (w->other, EVRUN_NOWAIT);
3298} 4725}
3299 4726
3300static void 4727static void
3301embed_io_cb (EV_P_ ev_io *io, int revents) 4728embed_io_cb (EV_P_ ev_io *io, int revents)
3302{ 4729{
3303 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4730 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3304 4731
3305 if (ev_cb (w)) 4732 if (ev_cb (w))
3306 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4733 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3307 else 4734 else
3308 ev_loop (w->other, EVLOOP_NONBLOCK); 4735 ev_run (w->other, EVRUN_NOWAIT);
3309} 4736}
3310 4737
3311static void 4738static void
3312embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4739embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3313{ 4740{
… …
3317 EV_P = w->other; 4744 EV_P = w->other;
3318 4745
3319 while (fdchangecnt) 4746 while (fdchangecnt)
3320 { 4747 {
3321 fd_reify (EV_A); 4748 fd_reify (EV_A);
3322 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4749 ev_run (EV_A_ EVRUN_NOWAIT);
3323 } 4750 }
3324 } 4751 }
3325} 4752}
3326 4753
3327static void 4754static void
… …
3333 4760
3334 { 4761 {
3335 EV_P = w->other; 4762 EV_P = w->other;
3336 4763
3337 ev_loop_fork (EV_A); 4764 ev_loop_fork (EV_A);
3338 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4765 ev_run (EV_A_ EVRUN_NOWAIT);
3339 } 4766 }
3340 4767
3341 ev_embed_start (EV_A_ w); 4768 ev_embed_start (EV_A_ w);
3342} 4769}
3343 4770
… …
3348 ev_idle_stop (EV_A_ idle); 4775 ev_idle_stop (EV_A_ idle);
3349} 4776}
3350#endif 4777#endif
3351 4778
3352void 4779void
3353ev_embed_start (EV_P_ ev_embed *w) 4780ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3354{ 4781{
3355 if (expect_false (ev_is_active (w))) 4782 if (expect_false (ev_is_active (w)))
3356 return; 4783 return;
3357 4784
3358 { 4785 {
… …
3379 4806
3380 EV_FREQUENT_CHECK; 4807 EV_FREQUENT_CHECK;
3381} 4808}
3382 4809
3383void 4810void
3384ev_embed_stop (EV_P_ ev_embed *w) 4811ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3385{ 4812{
3386 clear_pending (EV_A_ (W)w); 4813 clear_pending (EV_A_ (W)w);
3387 if (expect_false (!ev_is_active (w))) 4814 if (expect_false (!ev_is_active (w)))
3388 return; 4815 return;
3389 4816
… …
3391 4818
3392 ev_io_stop (EV_A_ &w->io); 4819 ev_io_stop (EV_A_ &w->io);
3393 ev_prepare_stop (EV_A_ &w->prepare); 4820 ev_prepare_stop (EV_A_ &w->prepare);
3394 ev_fork_stop (EV_A_ &w->fork); 4821 ev_fork_stop (EV_A_ &w->fork);
3395 4822
4823 ev_stop (EV_A_ (W)w);
4824
3396 EV_FREQUENT_CHECK; 4825 EV_FREQUENT_CHECK;
3397} 4826}
3398#endif 4827#endif
3399 4828
3400#if EV_FORK_ENABLE 4829#if EV_FORK_ENABLE
3401void 4830void
3402ev_fork_start (EV_P_ ev_fork *w) 4831ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3403{ 4832{
3404 if (expect_false (ev_is_active (w))) 4833 if (expect_false (ev_is_active (w)))
3405 return; 4834 return;
3406 4835
3407 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
… …
3412 4841
3413 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
3414} 4843}
3415 4844
3416void 4845void
3417ev_fork_stop (EV_P_ ev_fork *w) 4846ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3418{ 4847{
3419 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
3420 if (expect_false (!ev_is_active (w))) 4849 if (expect_false (!ev_is_active (w)))
3421 return; 4850 return;
3422 4851
… …
3433 4862
3434 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
3435} 4864}
3436#endif 4865#endif
3437 4866
3438#if EV_ASYNC_ENABLE 4867#if EV_CLEANUP_ENABLE
3439void 4868void
3440ev_async_start (EV_P_ ev_async *w) 4869ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3441{ 4870{
3442 if (expect_false (ev_is_active (w))) 4871 if (expect_false (ev_is_active (w)))
3443 return; 4872 return;
4873
4874 EV_FREQUENT_CHECK;
4875
4876 ev_start (EV_A_ (W)w, ++cleanupcnt);
4877 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4878 cleanups [cleanupcnt - 1] = w;
4879
4880 /* cleanup watchers should never keep a refcount on the loop */
4881 ev_unref (EV_A);
4882 EV_FREQUENT_CHECK;
4883}
4884
4885void
4886ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4887{
4888 clear_pending (EV_A_ (W)w);
4889 if (expect_false (!ev_is_active (w)))
4890 return;
4891
4892 EV_FREQUENT_CHECK;
4893 ev_ref (EV_A);
4894
4895 {
4896 int active = ev_active (w);
4897
4898 cleanups [active - 1] = cleanups [--cleanupcnt];
4899 ev_active (cleanups [active - 1]) = active;
4900 }
4901
4902 ev_stop (EV_A_ (W)w);
4903
4904 EV_FREQUENT_CHECK;
4905}
4906#endif
4907
4908#if EV_ASYNC_ENABLE
4909void
4910ev_async_start (EV_P_ ev_async *w) EV_THROW
4911{
4912 if (expect_false (ev_is_active (w)))
4913 return;
4914
4915 w->sent = 0;
3444 4916
3445 evpipe_init (EV_A); 4917 evpipe_init (EV_A);
3446 4918
3447 EV_FREQUENT_CHECK; 4919 EV_FREQUENT_CHECK;
3448 4920
… …
3452 4924
3453 EV_FREQUENT_CHECK; 4925 EV_FREQUENT_CHECK;
3454} 4926}
3455 4927
3456void 4928void
3457ev_async_stop (EV_P_ ev_async *w) 4929ev_async_stop (EV_P_ ev_async *w) EV_THROW
3458{ 4930{
3459 clear_pending (EV_A_ (W)w); 4931 clear_pending (EV_A_ (W)w);
3460 if (expect_false (!ev_is_active (w))) 4932 if (expect_false (!ev_is_active (w)))
3461 return; 4933 return;
3462 4934
… …
3473 4945
3474 EV_FREQUENT_CHECK; 4946 EV_FREQUENT_CHECK;
3475} 4947}
3476 4948
3477void 4949void
3478ev_async_send (EV_P_ ev_async *w) 4950ev_async_send (EV_P_ ev_async *w) EV_THROW
3479{ 4951{
3480 w->sent = 1; 4952 w->sent = 1;
3481 evpipe_write (EV_A_ &async_pending); 4953 evpipe_write (EV_A_ &async_pending);
3482} 4954}
3483#endif 4955#endif
… …
3520 4992
3521 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4993 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3522} 4994}
3523 4995
3524void 4996void
3525ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4997ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3526{ 4998{
3527 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4999 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3528 5000
3529 if (expect_false (!once)) 5001 if (expect_false (!once))
3530 { 5002 {
3531 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 5003 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3532 return; 5004 return;
3533 } 5005 }
3534 5006
3535 once->cb = cb; 5007 once->cb = cb;
3536 once->arg = arg; 5008 once->arg = arg;
… …
3551} 5023}
3552 5024
3553/*****************************************************************************/ 5025/*****************************************************************************/
3554 5026
3555#if EV_WALK_ENABLE 5027#if EV_WALK_ENABLE
5028ecb_cold
3556void 5029void
3557ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5030ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3558{ 5031{
3559 int i, j; 5032 int i, j;
3560 ev_watcher_list *wl, *wn; 5033 ev_watcher_list *wl, *wn;
3561 5034
3562 if (types & (EV_IO | EV_EMBED)) 5035 if (types & (EV_IO | EV_EMBED))
… …
3605 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5078 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3606#endif 5079#endif
3607 5080
3608#if EV_IDLE_ENABLE 5081#if EV_IDLE_ENABLE
3609 if (types & EV_IDLE) 5082 if (types & EV_IDLE)
3610 for (j = NUMPRI; i--; ) 5083 for (j = NUMPRI; j--; )
3611 for (i = idlecnt [j]; i--; ) 5084 for (i = idlecnt [j]; i--; )
3612 cb (EV_A_ EV_IDLE, idles [j][i]); 5085 cb (EV_A_ EV_IDLE, idles [j][i]);
3613#endif 5086#endif
3614 5087
3615#if EV_FORK_ENABLE 5088#if EV_FORK_ENABLE
… …
3623 if (types & EV_ASYNC) 5096 if (types & EV_ASYNC)
3624 for (i = asynccnt; i--; ) 5097 for (i = asynccnt; i--; )
3625 cb (EV_A_ EV_ASYNC, asyncs [i]); 5098 cb (EV_A_ EV_ASYNC, asyncs [i]);
3626#endif 5099#endif
3627 5100
5101#if EV_PREPARE_ENABLE
3628 if (types & EV_PREPARE) 5102 if (types & EV_PREPARE)
3629 for (i = preparecnt; i--; ) 5103 for (i = preparecnt; i--; )
3630#if EV_EMBED_ENABLE 5104# if EV_EMBED_ENABLE
3631 if (ev_cb (prepares [i]) != embed_prepare_cb) 5105 if (ev_cb (prepares [i]) != embed_prepare_cb)
3632#endif 5106# endif
3633 cb (EV_A_ EV_PREPARE, prepares [i]); 5107 cb (EV_A_ EV_PREPARE, prepares [i]);
5108#endif
3634 5109
5110#if EV_CHECK_ENABLE
3635 if (types & EV_CHECK) 5111 if (types & EV_CHECK)
3636 for (i = checkcnt; i--; ) 5112 for (i = checkcnt; i--; )
3637 cb (EV_A_ EV_CHECK, checks [i]); 5113 cb (EV_A_ EV_CHECK, checks [i]);
5114#endif
3638 5115
5116#if EV_SIGNAL_ENABLE
3639 if (types & EV_SIGNAL) 5117 if (types & EV_SIGNAL)
3640 for (i = 0; i < EV_NSIG - 1; ++i) 5118 for (i = 0; i < EV_NSIG - 1; ++i)
3641 for (wl = signals [i].head; wl; ) 5119 for (wl = signals [i].head; wl; )
3642 { 5120 {
3643 wn = wl->next; 5121 wn = wl->next;
3644 cb (EV_A_ EV_SIGNAL, wl); 5122 cb (EV_A_ EV_SIGNAL, wl);
3645 wl = wn; 5123 wl = wn;
3646 } 5124 }
5125#endif
3647 5126
5127#if EV_CHILD_ENABLE
3648 if (types & EV_CHILD) 5128 if (types & EV_CHILD)
3649 for (i = EV_PID_HASHSIZE; i--; ) 5129 for (i = (EV_PID_HASHSIZE); i--; )
3650 for (wl = childs [i]; wl; ) 5130 for (wl = childs [i]; wl; )
3651 { 5131 {
3652 wn = wl->next; 5132 wn = wl->next;
3653 cb (EV_A_ EV_CHILD, wl); 5133 cb (EV_A_ EV_CHILD, wl);
3654 wl = wn; 5134 wl = wn;
3655 } 5135 }
5136#endif
3656/* EV_STAT 0x00001000 /* stat data changed */ 5137/* EV_STAT 0x00001000 /* stat data changed */
3657/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5138/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3658} 5139}
3659#endif 5140#endif
3660 5141
3661#if EV_MULTIPLICITY 5142#if EV_MULTIPLICITY
3662 #include "ev_wrap.h" 5143 #include "ev_wrap.h"
3663#endif 5144#endif
3664 5145
3665#ifdef __cplusplus
3666}
3667#endif
3668

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