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Comparing libev/ev.c (file contents):
Revision 1.312 by root, Wed Aug 12 18:48:17 2009 UTC vs.
Revision 1.475 by sf-exg, Wed Apr 1 06:57:41 2015 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__ >= 9)) 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 445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
398extern "C" { 446#endif
447
448#if EV_USE_SIGNALFD
449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
450# include <stdint.h>
451# ifndef SFD_NONBLOCK
452# define SFD_NONBLOCK O_NONBLOCK
399# endif 453# endif
400int eventfd (unsigned int initval, int flags); 454# ifndef SFD_CLOEXEC
401# ifdef __cplusplus 455# ifdef O_CLOEXEC
402} 456# define SFD_CLOEXEC O_CLOEXEC
457# else
458# define SFD_CLOEXEC 02000000
459# endif
403# endif 460# endif
404#endif 461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
405 462
406#if EV_USE_SIGNALFD 463struct signalfd_siginfo
407# include <sys/signalfd.h> 464{
465 uint32_t ssi_signo;
466 char pad[128 - sizeof (uint32_t)];
467};
408#endif 468#endif
409 469
410/**/ 470/**/
411 471
412#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
413# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 473# define EV_FREQUENT_CHECK ev_verify (EV_A)
414#else 474#else
415# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
416#endif 476#endif
417 477
418/* 478/*
419 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
420 * It is added to ev_rt_now when scheduling periodics
421 * to ensure progress, time-wise, even when rounding
422 * errors are against us.
423 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
424 * Better solutions welcome.
425 */ 481 */
426#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 */
427 484
428#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) */
429#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) */
430/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
431 487
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 0x00010004
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;
432#if __GNUC__ >= 4 546 #if __GNUC__
433# define expect(expr,value) __builtin_expect ((expr),(value)) 547 typedef signed long long int64_t;
434# define noinline __attribute__ ((noinline)) 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
435#else 562#else
436# define expect(expr,value) (expr) 563 #include <inttypes.h>
437# define noinline 564 #if UINTMAX_MAX > 0xffffffffU
438# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 565 #define ECB_PTRSIZE 8
439# define inline 566 #else
567 #define ECB_PTRSIZE 4
568 #endif
440# 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
441#endif 580 #endif
581#endif
442 582
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#ifndef ECB_MEMORY_FENCE
648 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
649 #if __i386 || __i386__
650 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
651 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
652 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
653 #elif ECB_GCC_AMD64
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
655 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
656 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
657 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
658 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
659 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
660 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
662 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
663 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
664 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
665 #elif __aarch64__
666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
667 #elif (__sparc || __sparc__) && !__sparcv8
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
669 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
670 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
671 #elif defined __s390__ || defined __s390x__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
673 #elif defined __mips__
674 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
675 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
676 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
677 #elif defined __alpha__
678 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
679 #elif defined __hppa__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
681 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
682 #elif defined __ia64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
684 #elif defined __m68k__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
686 #elif defined __m88k__
687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
688 #elif defined __sh__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
690 #endif
691 #endif
692#endif
693
694#ifndef ECB_MEMORY_FENCE
695 #if ECB_GCC_VERSION(4,7)
696 /* see comment below (stdatomic.h) about the C11 memory model. */
697 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
698 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
699 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
700
701 #elif ECB_CLANG_EXTENSION(c_atomic)
702 /* see comment below (stdatomic.h) about the C11 memory model. */
703 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
704 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
705 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
706
707 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
708 #define ECB_MEMORY_FENCE __sync_synchronize ()
709 #elif _MSC_VER >= 1500 /* VC++ 2008 */
710 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
711 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
712 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
713 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
714 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
715 #elif _MSC_VER >= 1400 /* VC++ 2005 */
716 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
717 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
718 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
719 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
720 #elif defined _WIN32
721 #include <WinNT.h>
722 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
723 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
724 #include <mbarrier.h>
725 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
726 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
727 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
728 #elif __xlC__
729 #define ECB_MEMORY_FENCE __sync ()
730 #endif
731#endif
732
733#ifndef ECB_MEMORY_FENCE
734 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
735 /* we assume that these memory fences work on all variables/all memory accesses, */
736 /* not just C11 atomics and atomic accesses */
737 #include <stdatomic.h>
738 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
739 /* any fence other than seq_cst, which isn't very efficient for us. */
740 /* Why that is, we don't know - either the C11 memory model is quite useless */
741 /* for most usages, or gcc and clang have a bug */
742 /* I *currently* lean towards the latter, and inefficiently implement */
743 /* all three of ecb's fences as a seq_cst fence */
744 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
745 /* for all __atomic_thread_fence's except seq_cst */
746 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
747 #endif
748#endif
749
750#ifndef ECB_MEMORY_FENCE
751 #if !ECB_AVOID_PTHREADS
752 /*
753 * if you get undefined symbol references to pthread_mutex_lock,
754 * or failure to find pthread.h, then you should implement
755 * the ECB_MEMORY_FENCE operations for your cpu/compiler
756 * OR provide pthread.h and link against the posix thread library
757 * of your system.
758 */
759 #include <pthread.h>
760 #define ECB_NEEDS_PTHREADS 1
761 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
762
763 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
764 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
765 #endif
766#endif
767
768#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
769 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
770#endif
771
772#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
773 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
774#endif
775
776/*****************************************************************************/
777
778#if ECB_CPP
779 #define ecb_inline static inline
780#elif ECB_GCC_VERSION(2,5)
781 #define ecb_inline static __inline__
782#elif ECB_C99
783 #define ecb_inline static inline
784#else
785 #define ecb_inline static
786#endif
787
788#if ECB_GCC_VERSION(3,3)
789 #define ecb_restrict __restrict__
790#elif ECB_C99
791 #define ecb_restrict restrict
792#else
793 #define ecb_restrict
794#endif
795
796typedef int ecb_bool;
797
798#define ECB_CONCAT_(a, b) a ## b
799#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
800#define ECB_STRINGIFY_(a) # a
801#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
802#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
803
804#define ecb_function_ ecb_inline
805
806#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
807 #define ecb_attribute(attrlist) __attribute__ (attrlist)
808#else
809 #define ecb_attribute(attrlist)
810#endif
811
812#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
813 #define ecb_is_constant(expr) __builtin_constant_p (expr)
814#else
815 /* possible C11 impl for integral types
816 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
817 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
818
819 #define ecb_is_constant(expr) 0
820#endif
821
822#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
823 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
824#else
825 #define ecb_expect(expr,value) (expr)
826#endif
827
828#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
829 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
830#else
831 #define ecb_prefetch(addr,rw,locality)
832#endif
833
834/* no emulation for ecb_decltype */
835#if ECB_CPP11
836 // older implementations might have problems with decltype(x)::type, work around it
837 template<class T> struct ecb_decltype_t { typedef T type; };
838 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
839#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
840 #define ecb_decltype(x) __typeof__ (x)
841#endif
842
843#if _MSC_VER >= 1300
844 #define ecb_deprecated __declspec (deprecated)
845#else
846 #define ecb_deprecated ecb_attribute ((__deprecated__))
847#endif
848
849#if __MSC_VER >= 1500
850 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
851#elif ECB_GCC_VERSION(4,5)
852 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
853#else
854 #define ecb_deprecated_message(msg) ecb_deprecated
855#endif
856
857#if _MSC_VER >= 1400
858 #define ecb_noinline __declspec (noinline)
859#else
860 #define ecb_noinline ecb_attribute ((__noinline__))
861#endif
862
863#define ecb_unused ecb_attribute ((__unused__))
864#define ecb_const ecb_attribute ((__const__))
865#define ecb_pure ecb_attribute ((__pure__))
866
867#if ECB_C11 || __IBMC_NORETURN
868 /* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */
869 #define ecb_noreturn _Noreturn
870#elif ECB_CPP11
871 #define ecb_noreturn [[noreturn]]
872#elif _MSC_VER >= 1200
873 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
874 #define ecb_noreturn __declspec (noreturn)
875#else
876 #define ecb_noreturn ecb_attribute ((__noreturn__))
877#endif
878
879#if ECB_GCC_VERSION(4,3)
880 #define ecb_artificial ecb_attribute ((__artificial__))
881 #define ecb_hot ecb_attribute ((__hot__))
882 #define ecb_cold ecb_attribute ((__cold__))
883#else
884 #define ecb_artificial
885 #define ecb_hot
886 #define ecb_cold
887#endif
888
889/* put around conditional expressions if you are very sure that the */
890/* expression is mostly true or mostly false. note that these return */
891/* booleans, not the expression. */
443#define expect_false(expr) expect ((expr) != 0, 0) 892#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
444#define expect_true(expr) expect ((expr) != 0, 1) 893#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
894/* for compatibility to the rest of the world */
895#define ecb_likely(expr) ecb_expect_true (expr)
896#define ecb_unlikely(expr) ecb_expect_false (expr)
897
898/* count trailing zero bits and count # of one bits */
899#if ECB_GCC_VERSION(3,4) \
900 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
901 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
902 && ECB_CLANG_BUILTIN(__builtin_popcount))
903 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
904 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
905 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
906 #define ecb_ctz32(x) __builtin_ctz (x)
907 #define ecb_ctz64(x) __builtin_ctzll (x)
908 #define ecb_popcount32(x) __builtin_popcount (x)
909 /* no popcountll */
910#else
911 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
912 ecb_function_ ecb_const int
913 ecb_ctz32 (uint32_t x)
914 {
915 int r = 0;
916
917 x &= ~x + 1; /* this isolates the lowest bit */
918
919#if ECB_branchless_on_i386
920 r += !!(x & 0xaaaaaaaa) << 0;
921 r += !!(x & 0xcccccccc) << 1;
922 r += !!(x & 0xf0f0f0f0) << 2;
923 r += !!(x & 0xff00ff00) << 3;
924 r += !!(x & 0xffff0000) << 4;
925#else
926 if (x & 0xaaaaaaaa) r += 1;
927 if (x & 0xcccccccc) r += 2;
928 if (x & 0xf0f0f0f0) r += 4;
929 if (x & 0xff00ff00) r += 8;
930 if (x & 0xffff0000) r += 16;
931#endif
932
933 return r;
934 }
935
936 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
937 ecb_function_ ecb_const int
938 ecb_ctz64 (uint64_t x)
939 {
940 int shift = x & 0xffffffffU ? 0 : 32;
941 return ecb_ctz32 (x >> shift) + shift;
942 }
943
944 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
945 ecb_function_ ecb_const int
946 ecb_popcount32 (uint32_t x)
947 {
948 x -= (x >> 1) & 0x55555555;
949 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
950 x = ((x >> 4) + x) & 0x0f0f0f0f;
951 x *= 0x01010101;
952
953 return x >> 24;
954 }
955
956 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
957 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
958 {
959 int r = 0;
960
961 if (x >> 16) { x >>= 16; r += 16; }
962 if (x >> 8) { x >>= 8; r += 8; }
963 if (x >> 4) { x >>= 4; r += 4; }
964 if (x >> 2) { x >>= 2; r += 2; }
965 if (x >> 1) { r += 1; }
966
967 return r;
968 }
969
970 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
971 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
972 {
973 int r = 0;
974
975 if (x >> 32) { x >>= 32; r += 32; }
976
977 return r + ecb_ld32 (x);
978 }
979#endif
980
981ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
982ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
983ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
984ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
985
986ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
987ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
988{
989 return ( (x * 0x0802U & 0x22110U)
990 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
991}
992
993ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
994ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
995{
996 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
997 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
998 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
999 x = ( x >> 8 ) | ( x << 8);
1000
1001 return x;
1002}
1003
1004ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1005ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1006{
1007 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1008 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1009 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1010 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1011 x = ( x >> 16 ) | ( x << 16);
1012
1013 return x;
1014}
1015
1016/* popcount64 is only available on 64 bit cpus as gcc builtin */
1017/* so for this version we are lazy */
1018ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1019ecb_function_ ecb_const int
1020ecb_popcount64 (uint64_t x)
1021{
1022 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1023}
1024
1025ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1026ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1027ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1028ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1029ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1030ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1031ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1032ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1033
1034ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1035ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1036ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1037ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1038ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1039ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1040ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1041ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1042
1043#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1044 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1045 #define ecb_bswap32(x) __builtin_bswap32 (x)
1046 #define ecb_bswap64(x) __builtin_bswap64 (x)
1047#else
1048 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1049 ecb_function_ ecb_const uint16_t
1050 ecb_bswap16 (uint16_t x)
1051 {
1052 return ecb_rotl16 (x, 8);
1053 }
1054
1055 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1056 ecb_function_ ecb_const uint32_t
1057 ecb_bswap32 (uint32_t x)
1058 {
1059 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1060 }
1061
1062 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1063 ecb_function_ ecb_const uint64_t
1064 ecb_bswap64 (uint64_t x)
1065 {
1066 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1067 }
1068#endif
1069
1070#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1071 #define ecb_unreachable() __builtin_unreachable ()
1072#else
1073 /* this seems to work fine, but gcc always emits a warning for it :/ */
1074 ecb_inline ecb_noreturn void ecb_unreachable (void);
1075 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1076#endif
1077
1078/* try to tell the compiler that some condition is definitely true */
1079#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1080
1081ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
1082ecb_inline ecb_const unsigned char
1083ecb_byteorder_helper (void)
1084{
1085 /* the union code still generates code under pressure in gcc, */
1086 /* but less than using pointers, and always seems to */
1087 /* successfully return a constant. */
1088 /* the reason why we have this horrible preprocessor mess */
1089 /* is to avoid it in all cases, at least on common architectures */
1090 /* or when using a recent enough gcc version (>= 4.6) */
1091#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1092 return 0x44;
1093#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1094 return 0x44;
1095#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1096 return 0x11;
1097#else
1098 union
1099 {
1100 uint32_t i;
1101 uint8_t c;
1102 } u = { 0x11223344 };
1103 return u.c;
1104#endif
1105}
1106
1107ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1108ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1109ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1110ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1111
1112#if ECB_GCC_VERSION(3,0) || ECB_C99
1113 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1114#else
1115 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1116#endif
1117
1118#if ECB_CPP
1119 template<typename T>
1120 static inline T ecb_div_rd (T val, T div)
1121 {
1122 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1123 }
1124 template<typename T>
1125 static inline T ecb_div_ru (T val, T div)
1126 {
1127 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1128 }
1129#else
1130 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1131 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1132#endif
1133
1134#if ecb_cplusplus_does_not_suck
1135 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1136 template<typename T, int N>
1137 static inline int ecb_array_length (const T (&arr)[N])
1138 {
1139 return N;
1140 }
1141#else
1142 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1143#endif
1144
1145/*******************************************************************************/
1146/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1147
1148/* basically, everything uses "ieee pure-endian" floating point numbers */
1149/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1150#if 0 \
1151 || __i386 || __i386__ \
1152 || ECB_GCC_AMD64 \
1153 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1154 || defined __s390__ || defined __s390x__ \
1155 || defined __mips__ \
1156 || defined __alpha__ \
1157 || defined __hppa__ \
1158 || defined __ia64__ \
1159 || defined __m68k__ \
1160 || defined __m88k__ \
1161 || defined __sh__ \
1162 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1163 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1164 || defined __aarch64__
1165 #define ECB_STDFP 1
1166 #include <string.h> /* for memcpy */
1167#else
1168 #define ECB_STDFP 0
1169#endif
1170
1171#ifndef ECB_NO_LIBM
1172
1173 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1174
1175 /* only the oldest of old doesn't have this one. solaris. */
1176 #ifdef INFINITY
1177 #define ECB_INFINITY INFINITY
1178 #else
1179 #define ECB_INFINITY HUGE_VAL
1180 #endif
1181
1182 #ifdef NAN
1183 #define ECB_NAN NAN
1184 #else
1185 #define ECB_NAN ECB_INFINITY
1186 #endif
1187
1188 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1189 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1190 #else
1191 #define ecb_ldexpf(x,e) (float) ldexp ((float) (x), (e))
1192 #endif
1193
1194 /* converts an ieee half/binary16 to a float */
1195 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1196 ecb_function_ ecb_const float
1197 ecb_binary16_to_float (uint16_t x)
1198 {
1199 int e = (x >> 10) & 0x1f;
1200 int m = x & 0x3ff;
1201 float r;
1202
1203 if (!e ) r = ecb_ldexpf (m , -24);
1204 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1205 else if (m ) r = ECB_NAN;
1206 else r = ECB_INFINITY;
1207
1208 return x & 0x8000 ? -r : r;
1209 }
1210
1211 /* convert a float to ieee single/binary32 */
1212 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1213 ecb_function_ ecb_const uint32_t
1214 ecb_float_to_binary32 (float x)
1215 {
1216 uint32_t r;
1217
1218 #if ECB_STDFP
1219 memcpy (&r, &x, 4);
1220 #else
1221 /* slow emulation, works for anything but -0 */
1222 uint32_t m;
1223 int e;
1224
1225 if (x == 0e0f ) return 0x00000000U;
1226 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1227 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1228 if (x != x ) return 0x7fbfffffU;
1229
1230 m = frexpf (x, &e) * 0x1000000U;
1231
1232 r = m & 0x80000000U;
1233
1234 if (r)
1235 m = -m;
1236
1237 if (e <= -126)
1238 {
1239 m &= 0xffffffU;
1240 m >>= (-125 - e);
1241 e = -126;
1242 }
1243
1244 r |= (e + 126) << 23;
1245 r |= m & 0x7fffffU;
1246 #endif
1247
1248 return r;
1249 }
1250
1251 /* converts an ieee single/binary32 to a float */
1252 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1253 ecb_function_ ecb_const float
1254 ecb_binary32_to_float (uint32_t x)
1255 {
1256 float r;
1257
1258 #if ECB_STDFP
1259 memcpy (&r, &x, 4);
1260 #else
1261 /* emulation, only works for normals and subnormals and +0 */
1262 int neg = x >> 31;
1263 int e = (x >> 23) & 0xffU;
1264
1265 x &= 0x7fffffU;
1266
1267 if (e)
1268 x |= 0x800000U;
1269 else
1270 e = 1;
1271
1272 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1273 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1274
1275 r = neg ? -r : r;
1276 #endif
1277
1278 return r;
1279 }
1280
1281 /* convert a double to ieee double/binary64 */
1282 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1283 ecb_function_ ecb_const uint64_t
1284 ecb_double_to_binary64 (double x)
1285 {
1286 uint64_t r;
1287
1288 #if ECB_STDFP
1289 memcpy (&r, &x, 8);
1290 #else
1291 /* slow emulation, works for anything but -0 */
1292 uint64_t m;
1293 int e;
1294
1295 if (x == 0e0 ) return 0x0000000000000000U;
1296 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1297 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1298 if (x != x ) return 0X7ff7ffffffffffffU;
1299
1300 m = frexp (x, &e) * 0x20000000000000U;
1301
1302 r = m & 0x8000000000000000;;
1303
1304 if (r)
1305 m = -m;
1306
1307 if (e <= -1022)
1308 {
1309 m &= 0x1fffffffffffffU;
1310 m >>= (-1021 - e);
1311 e = -1022;
1312 }
1313
1314 r |= ((uint64_t)(e + 1022)) << 52;
1315 r |= m & 0xfffffffffffffU;
1316 #endif
1317
1318 return r;
1319 }
1320
1321 /* converts an ieee double/binary64 to a double */
1322 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1323 ecb_function_ ecb_const double
1324 ecb_binary64_to_double (uint64_t x)
1325 {
1326 double r;
1327
1328 #if ECB_STDFP
1329 memcpy (&r, &x, 8);
1330 #else
1331 /* emulation, only works for normals and subnormals and +0 */
1332 int neg = x >> 63;
1333 int e = (x >> 52) & 0x7ffU;
1334
1335 x &= 0xfffffffffffffU;
1336
1337 if (e)
1338 x |= 0x10000000000000U;
1339 else
1340 e = 1;
1341
1342 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1343 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1344
1345 r = neg ? -r : r;
1346 #endif
1347
1348 return r;
1349 }
1350
1351#endif
1352
1353#endif
1354
1355/* ECB.H END */
1356
1357#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1358/* if your architecture doesn't need memory fences, e.g. because it is
1359 * single-cpu/core, or if you use libev in a project that doesn't use libev
1360 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1361 * libev, in which cases the memory fences become nops.
1362 * alternatively, you can remove this #error and link against libpthread,
1363 * which will then provide the memory fences.
1364 */
1365# error "memory fences not defined for your architecture, please report"
1366#endif
1367
1368#ifndef ECB_MEMORY_FENCE
1369# define ECB_MEMORY_FENCE do { } while (0)
1370# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1371# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1372#endif
1373
1374#define expect_false(cond) ecb_expect_false (cond)
1375#define expect_true(cond) ecb_expect_true (cond)
1376#define noinline ecb_noinline
1377
445#define inline_size static inline 1378#define inline_size ecb_inline
446 1379
447#if EV_MINIMAL 1380#if EV_FEATURE_CODE
1381# define inline_speed ecb_inline
1382#else
448# define inline_speed static noinline 1383# define inline_speed static noinline
449#else
450# define inline_speed static inline
451#endif 1384#endif
452 1385
453#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1386#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
454 1387
455#if EV_MINPRI == EV_MAXPRI 1388#if EV_MINPRI == EV_MAXPRI
… …
468#define ev_active(w) ((W)(w))->active 1401#define ev_active(w) ((W)(w))->active
469#define ev_at(w) ((WT)(w))->at 1402#define ev_at(w) ((WT)(w))->at
470 1403
471#if EV_USE_REALTIME 1404#if EV_USE_REALTIME
472/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1405/* sig_atomic_t is used to avoid per-thread variables or locking but still */
473/* giving it a reasonably high chance of working on typical architetcures */ 1406/* giving it a reasonably high chance of working on typical architectures */
474static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1407static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
475#endif 1408#endif
476 1409
477#if EV_USE_MONOTONIC 1410#if EV_USE_MONOTONIC
478static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1411static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
479#endif 1412#endif
480 1413
1414#ifndef EV_FD_TO_WIN32_HANDLE
1415# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1416#endif
1417#ifndef EV_WIN32_HANDLE_TO_FD
1418# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1419#endif
1420#ifndef EV_WIN32_CLOSE_FD
1421# define EV_WIN32_CLOSE_FD(fd) close (fd)
1422#endif
1423
481#ifdef _WIN32 1424#ifdef _WIN32
482# include "ev_win32.c" 1425# include "ev_win32.c"
483#endif 1426#endif
484 1427
485/*****************************************************************************/ 1428/*****************************************************************************/
486 1429
1430/* define a suitable floor function (only used by periodics atm) */
1431
1432#if EV_USE_FLOOR
1433# include <math.h>
1434# define ev_floor(v) floor (v)
1435#else
1436
1437#include <float.h>
1438
1439/* a floor() replacement function, should be independent of ev_tstamp type */
1440static ev_tstamp noinline
1441ev_floor (ev_tstamp v)
1442{
1443 /* the choice of shift factor is not terribly important */
1444#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1445 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1446#else
1447 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1448#endif
1449
1450 /* argument too large for an unsigned long? */
1451 if (expect_false (v >= shift))
1452 {
1453 ev_tstamp f;
1454
1455 if (v == v - 1.)
1456 return v; /* very large number */
1457
1458 f = shift * ev_floor (v * (1. / shift));
1459 return f + ev_floor (v - f);
1460 }
1461
1462 /* special treatment for negative args? */
1463 if (expect_false (v < 0.))
1464 {
1465 ev_tstamp f = -ev_floor (-v);
1466
1467 return f - (f == v ? 0 : 1);
1468 }
1469
1470 /* fits into an unsigned long */
1471 return (unsigned long)v;
1472}
1473
1474#endif
1475
1476/*****************************************************************************/
1477
1478#ifdef __linux
1479# include <sys/utsname.h>
1480#endif
1481
1482static unsigned int noinline ecb_cold
1483ev_linux_version (void)
1484{
1485#ifdef __linux
1486 unsigned int v = 0;
1487 struct utsname buf;
1488 int i;
1489 char *p = buf.release;
1490
1491 if (uname (&buf))
1492 return 0;
1493
1494 for (i = 3+1; --i; )
1495 {
1496 unsigned int c = 0;
1497
1498 for (;;)
1499 {
1500 if (*p >= '0' && *p <= '9')
1501 c = c * 10 + *p++ - '0';
1502 else
1503 {
1504 p += *p == '.';
1505 break;
1506 }
1507 }
1508
1509 v = (v << 8) | c;
1510 }
1511
1512 return v;
1513#else
1514 return 0;
1515#endif
1516}
1517
1518/*****************************************************************************/
1519
1520#if EV_AVOID_STDIO
1521static void noinline ecb_cold
1522ev_printerr (const char *msg)
1523{
1524 write (STDERR_FILENO, msg, strlen (msg));
1525}
1526#endif
1527
487static void (*syserr_cb)(const char *msg); 1528static void (*syserr_cb)(const char *msg) EV_THROW;
488 1529
489void 1530void ecb_cold
490ev_set_syserr_cb (void (*cb)(const char *msg)) 1531ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
491{ 1532{
492 syserr_cb = cb; 1533 syserr_cb = cb;
493} 1534}
494 1535
495static void noinline 1536static void noinline ecb_cold
496ev_syserr (const char *msg) 1537ev_syserr (const char *msg)
497{ 1538{
498 if (!msg) 1539 if (!msg)
499 msg = "(libev) system error"; 1540 msg = "(libev) system error";
500 1541
501 if (syserr_cb) 1542 if (syserr_cb)
502 syserr_cb (msg); 1543 syserr_cb (msg);
503 else 1544 else
504 { 1545 {
1546#if EV_AVOID_STDIO
1547 ev_printerr (msg);
1548 ev_printerr (": ");
1549 ev_printerr (strerror (errno));
1550 ev_printerr ("\n");
1551#else
505 perror (msg); 1552 perror (msg);
1553#endif
506 abort (); 1554 abort ();
507 } 1555 }
508} 1556}
509 1557
510static void * 1558static void *
511ev_realloc_emul (void *ptr, long size) 1559ev_realloc_emul (void *ptr, long size) EV_THROW
512{ 1560{
513 /* some systems, notably openbsd and darwin, fail to properly 1561 /* some systems, notably openbsd and darwin, fail to properly
514 * implement realloc (x, 0) (as required by both ansi c-98 and 1562 * implement realloc (x, 0) (as required by both ansi c-89 and
515 * the single unix specification, so work around them here. 1563 * the single unix specification, so work around them here.
1564 * recently, also (at least) fedora and debian started breaking it,
1565 * despite documenting it otherwise.
516 */ 1566 */
517 1567
518 if (size) 1568 if (size)
519 return realloc (ptr, size); 1569 return realloc (ptr, size);
520 1570
521 free (ptr); 1571 free (ptr);
522 return 0; 1572 return 0;
523} 1573}
524 1574
525static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1575static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
526 1576
527void 1577void ecb_cold
528ev_set_allocator (void *(*cb)(void *ptr, long size)) 1578ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
529{ 1579{
530 alloc = cb; 1580 alloc = cb;
531} 1581}
532 1582
533inline_speed void * 1583inline_speed void *
… …
535{ 1585{
536 ptr = alloc (ptr, size); 1586 ptr = alloc (ptr, size);
537 1587
538 if (!ptr && size) 1588 if (!ptr && size)
539 { 1589 {
1590#if EV_AVOID_STDIO
1591 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1592#else
540 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1593 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1594#endif
541 abort (); 1595 abort ();
542 } 1596 }
543 1597
544 return ptr; 1598 return ptr;
545} 1599}
… …
561 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1615 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
562 unsigned char unused; 1616 unsigned char unused;
563#if EV_USE_EPOLL 1617#if EV_USE_EPOLL
564 unsigned int egen; /* generation counter to counter epoll bugs */ 1618 unsigned int egen; /* generation counter to counter epoll bugs */
565#endif 1619#endif
566#if EV_SELECT_IS_WINSOCKET 1620#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
567 SOCKET handle; 1621 SOCKET handle;
1622#endif
1623#if EV_USE_IOCP
1624 OVERLAPPED or, ow;
568#endif 1625#endif
569} ANFD; 1626} ANFD;
570 1627
571/* stores the pending event set for a given watcher */ 1628/* stores the pending event set for a given watcher */
572typedef struct 1629typedef struct
… …
614 #undef VAR 1671 #undef VAR
615 }; 1672 };
616 #include "ev_wrap.h" 1673 #include "ev_wrap.h"
617 1674
618 static struct ev_loop default_loop_struct; 1675 static struct ev_loop default_loop_struct;
619 struct ev_loop *ev_default_loop_ptr; 1676 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
620 1677
621#else 1678#else
622 1679
623 ev_tstamp ev_rt_now; 1680 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
624 #define VAR(name,decl) static decl; 1681 #define VAR(name,decl) static decl;
625 #include "ev_vars.h" 1682 #include "ev_vars.h"
626 #undef VAR 1683 #undef VAR
627 1684
628 static int ev_default_loop_ptr; 1685 static int ev_default_loop_ptr;
629 1686
630#endif 1687#endif
631 1688
632#if EV_MINIMAL < 2 1689#if EV_FEATURE_API
633# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1690# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
634# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1691# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
635# define EV_INVOKE_PENDING invoke_cb (EV_A) 1692# define EV_INVOKE_PENDING invoke_cb (EV_A)
636#else 1693#else
637# define EV_RELEASE_CB (void)0 1694# define EV_RELEASE_CB (void)0
638# define EV_ACQUIRE_CB (void)0 1695# define EV_ACQUIRE_CB (void)0
639# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1696# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
640#endif 1697#endif
641 1698
642#define EVUNLOOP_RECURSE 0x80 1699#define EVBREAK_RECURSE 0x80
643 1700
644/*****************************************************************************/ 1701/*****************************************************************************/
645 1702
646#ifndef EV_HAVE_EV_TIME 1703#ifndef EV_HAVE_EV_TIME
647ev_tstamp 1704ev_tstamp
648ev_time (void) 1705ev_time (void) EV_THROW
649{ 1706{
650#if EV_USE_REALTIME 1707#if EV_USE_REALTIME
651 if (expect_true (have_realtime)) 1708 if (expect_true (have_realtime))
652 { 1709 {
653 struct timespec ts; 1710 struct timespec ts;
… …
677 return ev_time (); 1734 return ev_time ();
678} 1735}
679 1736
680#if EV_MULTIPLICITY 1737#if EV_MULTIPLICITY
681ev_tstamp 1738ev_tstamp
682ev_now (EV_P) 1739ev_now (EV_P) EV_THROW
683{ 1740{
684 return ev_rt_now; 1741 return ev_rt_now;
685} 1742}
686#endif 1743#endif
687 1744
688void 1745void
689ev_sleep (ev_tstamp delay) 1746ev_sleep (ev_tstamp delay) EV_THROW
690{ 1747{
691 if (delay > 0.) 1748 if (delay > 0.)
692 { 1749 {
693#if EV_USE_NANOSLEEP 1750#if EV_USE_NANOSLEEP
694 struct timespec ts; 1751 struct timespec ts;
695 1752
696 ts.tv_sec = (time_t)delay; 1753 EV_TS_SET (ts, delay);
697 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
698
699 nanosleep (&ts, 0); 1754 nanosleep (&ts, 0);
700#elif defined(_WIN32) 1755#elif defined _WIN32
701 Sleep ((unsigned long)(delay * 1e3)); 1756 Sleep ((unsigned long)(delay * 1e3));
702#else 1757#else
703 struct timeval tv; 1758 struct timeval tv;
704 1759
705 tv.tv_sec = (time_t)delay;
706 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
707
708 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1760 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
709 /* something not guaranteed by newer posix versions, but guaranteed */ 1761 /* something not guaranteed by newer posix versions, but guaranteed */
710 /* by older ones */ 1762 /* by older ones */
1763 EV_TV_SET (tv, delay);
711 select (0, 0, 0, 0, &tv); 1764 select (0, 0, 0, 0, &tv);
712#endif 1765#endif
713 } 1766 }
714} 1767}
715 1768
716/*****************************************************************************/ 1769/*****************************************************************************/
717 1770
718#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1771#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
719 1772
720/* find a suitable new size for the given array, */ 1773/* find a suitable new size for the given array, */
721/* hopefully by rounding to a ncie-to-malloc size */ 1774/* hopefully by rounding to a nice-to-malloc size */
722inline_size int 1775inline_size int
723array_nextsize (int elem, int cur, int cnt) 1776array_nextsize (int elem, int cur, int cnt)
724{ 1777{
725 int ncur = cur + 1; 1778 int ncur = cur + 1;
726 1779
727 do 1780 do
728 ncur <<= 1; 1781 ncur <<= 1;
729 while (cnt > ncur); 1782 while (cnt > ncur);
730 1783
731 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1784 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
732 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1785 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
733 { 1786 {
734 ncur *= elem; 1787 ncur *= elem;
735 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1788 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
736 ncur = ncur - sizeof (void *) * 4; 1789 ncur = ncur - sizeof (void *) * 4;
… …
738 } 1791 }
739 1792
740 return ncur; 1793 return ncur;
741} 1794}
742 1795
743static noinline void * 1796static void * noinline ecb_cold
744array_realloc (int elem, void *base, int *cur, int cnt) 1797array_realloc (int elem, void *base, int *cur, int cnt)
745{ 1798{
746 *cur = array_nextsize (elem, *cur, cnt); 1799 *cur = array_nextsize (elem, *cur, cnt);
747 return ev_realloc (base, elem * *cur); 1800 return ev_realloc (base, elem * *cur);
748} 1801}
… …
751 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1804 memset ((void *)(base), 0, sizeof (*(base)) * (count))
752 1805
753#define array_needsize(type,base,cur,cnt,init) \ 1806#define array_needsize(type,base,cur,cnt,init) \
754 if (expect_false ((cnt) > (cur))) \ 1807 if (expect_false ((cnt) > (cur))) \
755 { \ 1808 { \
756 int ocur_ = (cur); \ 1809 int ecb_unused ocur_ = (cur); \
757 (base) = (type *)array_realloc \ 1810 (base) = (type *)array_realloc \
758 (sizeof (type), (base), &(cur), (cnt)); \ 1811 (sizeof (type), (base), &(cur), (cnt)); \
759 init ((base) + (ocur_), (cur) - ocur_); \ 1812 init ((base) + (ocur_), (cur) - ocur_); \
760 } 1813 }
761 1814
… …
779pendingcb (EV_P_ ev_prepare *w, int revents) 1832pendingcb (EV_P_ ev_prepare *w, int revents)
780{ 1833{
781} 1834}
782 1835
783void noinline 1836void noinline
784ev_feed_event (EV_P_ void *w, int revents) 1837ev_feed_event (EV_P_ void *w, int revents) EV_THROW
785{ 1838{
786 W w_ = (W)w; 1839 W w_ = (W)w;
787 int pri = ABSPRI (w_); 1840 int pri = ABSPRI (w_);
788 1841
789 if (expect_false (w_->pending)) 1842 if (expect_false (w_->pending))
… …
793 w_->pending = ++pendingcnt [pri]; 1846 w_->pending = ++pendingcnt [pri];
794 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1847 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
795 pendings [pri][w_->pending - 1].w = w_; 1848 pendings [pri][w_->pending - 1].w = w_;
796 pendings [pri][w_->pending - 1].events = revents; 1849 pendings [pri][w_->pending - 1].events = revents;
797 } 1850 }
1851
1852 pendingpri = NUMPRI - 1;
798} 1853}
799 1854
800inline_speed void 1855inline_speed void
801feed_reverse (EV_P_ W w) 1856feed_reverse (EV_P_ W w)
802{ 1857{
… …
822} 1877}
823 1878
824/*****************************************************************************/ 1879/*****************************************************************************/
825 1880
826inline_speed void 1881inline_speed void
827fd_event_nc (EV_P_ int fd, int revents) 1882fd_event_nocheck (EV_P_ int fd, int revents)
828{ 1883{
829 ANFD *anfd = anfds + fd; 1884 ANFD *anfd = anfds + fd;
830 ev_io *w; 1885 ev_io *w;
831 1886
832 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1887 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
844fd_event (EV_P_ int fd, int revents) 1899fd_event (EV_P_ int fd, int revents)
845{ 1900{
846 ANFD *anfd = anfds + fd; 1901 ANFD *anfd = anfds + fd;
847 1902
848 if (expect_true (!anfd->reify)) 1903 if (expect_true (!anfd->reify))
849 fd_event_nc (EV_A_ fd, revents); 1904 fd_event_nocheck (EV_A_ fd, revents);
850} 1905}
851 1906
852void 1907void
853ev_feed_fd_event (EV_P_ int fd, int revents) 1908ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
854{ 1909{
855 if (fd >= 0 && fd < anfdmax) 1910 if (fd >= 0 && fd < anfdmax)
856 fd_event_nc (EV_A_ fd, revents); 1911 fd_event_nocheck (EV_A_ fd, revents);
857} 1912}
858 1913
859/* make sure the external fd watch events are in-sync */ 1914/* make sure the external fd watch events are in-sync */
860/* with the kernel/libev internal state */ 1915/* with the kernel/libev internal state */
861inline_size void 1916inline_size void
862fd_reify (EV_P) 1917fd_reify (EV_P)
863{ 1918{
864 int i; 1919 int i;
865 1920
1921#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1922 for (i = 0; i < fdchangecnt; ++i)
1923 {
1924 int fd = fdchanges [i];
1925 ANFD *anfd = anfds + fd;
1926
1927 if (anfd->reify & EV__IOFDSET && anfd->head)
1928 {
1929 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1930
1931 if (handle != anfd->handle)
1932 {
1933 unsigned long arg;
1934
1935 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1936
1937 /* handle changed, but fd didn't - we need to do it in two steps */
1938 backend_modify (EV_A_ fd, anfd->events, 0);
1939 anfd->events = 0;
1940 anfd->handle = handle;
1941 }
1942 }
1943 }
1944#endif
1945
866 for (i = 0; i < fdchangecnt; ++i) 1946 for (i = 0; i < fdchangecnt; ++i)
867 { 1947 {
868 int fd = fdchanges [i]; 1948 int fd = fdchanges [i];
869 ANFD *anfd = anfds + fd; 1949 ANFD *anfd = anfds + fd;
870 ev_io *w; 1950 ev_io *w;
871 1951
872 unsigned char events = 0; 1952 unsigned char o_events = anfd->events;
1953 unsigned char o_reify = anfd->reify;
873 1954
874 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1955 anfd->reify = 0;
875 events |= (unsigned char)w->events;
876 1956
877#if EV_SELECT_IS_WINSOCKET 1957 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
878 if (events)
879 { 1958 {
880 unsigned long arg; 1959 anfd->events = 0;
881 #ifdef EV_FD_TO_WIN32_HANDLE 1960
882 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1961 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
883 #else 1962 anfd->events |= (unsigned char)w->events;
884 anfd->handle = _get_osfhandle (fd); 1963
885 #endif 1964 if (o_events != anfd->events)
886 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1965 o_reify = EV__IOFDSET; /* actually |= */
887 } 1966 }
888#endif
889 1967
890 { 1968 if (o_reify & EV__IOFDSET)
891 unsigned char o_events = anfd->events;
892 unsigned char o_reify = anfd->reify;
893
894 anfd->reify = 0;
895 anfd->events = events;
896
897 if (o_events != events || o_reify & EV__IOFDSET)
898 backend_modify (EV_A_ fd, o_events, events); 1969 backend_modify (EV_A_ fd, o_events, anfd->events);
899 }
900 } 1970 }
901 1971
902 fdchangecnt = 0; 1972 fdchangecnt = 0;
903} 1973}
904 1974
… …
916 fdchanges [fdchangecnt - 1] = fd; 1986 fdchanges [fdchangecnt - 1] = fd;
917 } 1987 }
918} 1988}
919 1989
920/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1990/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
921inline_speed void 1991inline_speed void ecb_cold
922fd_kill (EV_P_ int fd) 1992fd_kill (EV_P_ int fd)
923{ 1993{
924 ev_io *w; 1994 ev_io *w;
925 1995
926 while ((w = (ev_io *)anfds [fd].head)) 1996 while ((w = (ev_io *)anfds [fd].head))
… …
928 ev_io_stop (EV_A_ w); 1998 ev_io_stop (EV_A_ w);
929 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1999 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
930 } 2000 }
931} 2001}
932 2002
933/* check whether the given fd is atcually valid, for error recovery */ 2003/* check whether the given fd is actually valid, for error recovery */
934inline_size int 2004inline_size int ecb_cold
935fd_valid (int fd) 2005fd_valid (int fd)
936{ 2006{
937#ifdef _WIN32 2007#ifdef _WIN32
938 return _get_osfhandle (fd) != -1; 2008 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
939#else 2009#else
940 return fcntl (fd, F_GETFD) != -1; 2010 return fcntl (fd, F_GETFD) != -1;
941#endif 2011#endif
942} 2012}
943 2013
944/* called on EBADF to verify fds */ 2014/* called on EBADF to verify fds */
945static void noinline 2015static void noinline ecb_cold
946fd_ebadf (EV_P) 2016fd_ebadf (EV_P)
947{ 2017{
948 int fd; 2018 int fd;
949 2019
950 for (fd = 0; fd < anfdmax; ++fd) 2020 for (fd = 0; fd < anfdmax; ++fd)
… …
952 if (!fd_valid (fd) && errno == EBADF) 2022 if (!fd_valid (fd) && errno == EBADF)
953 fd_kill (EV_A_ fd); 2023 fd_kill (EV_A_ fd);
954} 2024}
955 2025
956/* called on ENOMEM in select/poll to kill some fds and retry */ 2026/* called on ENOMEM in select/poll to kill some fds and retry */
957static void noinline 2027static void noinline ecb_cold
958fd_enomem (EV_P) 2028fd_enomem (EV_P)
959{ 2029{
960 int fd; 2030 int fd;
961 2031
962 for (fd = anfdmax; fd--; ) 2032 for (fd = anfdmax; fd--; )
… …
980 anfds [fd].emask = 0; 2050 anfds [fd].emask = 0;
981 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2051 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
982 } 2052 }
983} 2053}
984 2054
2055/* used to prepare libev internal fd's */
2056/* this is not fork-safe */
2057inline_speed void
2058fd_intern (int fd)
2059{
2060#ifdef _WIN32
2061 unsigned long arg = 1;
2062 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2063#else
2064 fcntl (fd, F_SETFD, FD_CLOEXEC);
2065 fcntl (fd, F_SETFL, O_NONBLOCK);
2066#endif
2067}
2068
985/*****************************************************************************/ 2069/*****************************************************************************/
986 2070
987/* 2071/*
988 * the heap functions want a real array index. array index 0 uis guaranteed to not 2072 * the heap functions want a real array index. array index 0 is guaranteed to not
989 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2073 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
990 * the branching factor of the d-tree. 2074 * the branching factor of the d-tree.
991 */ 2075 */
992 2076
993/* 2077/*
… …
1141 2225
1142static ANSIG signals [EV_NSIG - 1]; 2226static ANSIG signals [EV_NSIG - 1];
1143 2227
1144/*****************************************************************************/ 2228/*****************************************************************************/
1145 2229
1146/* used to prepare libev internal fd's */ 2230#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1147/* this is not fork-safe */ 2231
2232static void noinline ecb_cold
2233evpipe_init (EV_P)
2234{
2235 if (!ev_is_active (&pipe_w))
2236 {
2237 int fds [2];
2238
2239# if EV_USE_EVENTFD
2240 fds [0] = -1;
2241 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2242 if (fds [1] < 0 && errno == EINVAL)
2243 fds [1] = eventfd (0, 0);
2244
2245 if (fds [1] < 0)
2246# endif
2247 {
2248 while (pipe (fds))
2249 ev_syserr ("(libev) error creating signal/async pipe");
2250
2251 fd_intern (fds [0]);
2252 }
2253
2254 evpipe [0] = fds [0];
2255
2256 if (evpipe [1] < 0)
2257 evpipe [1] = fds [1]; /* first call, set write fd */
2258 else
2259 {
2260 /* on subsequent calls, do not change evpipe [1] */
2261 /* so that evpipe_write can always rely on its value. */
2262 /* this branch does not do anything sensible on windows, */
2263 /* so must not be executed on windows */
2264
2265 dup2 (fds [1], evpipe [1]);
2266 close (fds [1]);
2267 }
2268
2269 fd_intern (evpipe [1]);
2270
2271 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2272 ev_io_start (EV_A_ &pipe_w);
2273 ev_unref (EV_A); /* watcher should not keep loop alive */
2274 }
2275}
2276
1148inline_speed void 2277inline_speed void
1149fd_intern (int fd) 2278evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1150{ 2279{
1151#ifdef _WIN32 2280 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1152 unsigned long arg = 1;
1153 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1154#else
1155 fcntl (fd, F_SETFD, FD_CLOEXEC);
1156 fcntl (fd, F_SETFL, O_NONBLOCK);
1157#endif
1158}
1159 2281
1160static void noinline 2282 if (expect_true (*flag))
1161evpipe_init (EV_P) 2283 return;
1162{ 2284
1163 if (!ev_is_active (&pipe_w)) 2285 *flag = 1;
2286 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2287
2288 pipe_write_skipped = 1;
2289
2290 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2291
2292 if (pipe_write_wanted)
1164 { 2293 {
2294 int old_errno;
2295
2296 pipe_write_skipped = 0;
2297 ECB_MEMORY_FENCE_RELEASE;
2298
2299 old_errno = errno; /* save errno because write will clobber it */
2300
1165#if EV_USE_EVENTFD 2301#if EV_USE_EVENTFD
1166 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2302 if (evpipe [0] < 0)
1167 if (evfd < 0 && errno == EINVAL)
1168 evfd = eventfd (0, 0);
1169
1170 if (evfd >= 0)
1171 { 2303 {
1172 evpipe [0] = -1; 2304 uint64_t counter = 1;
1173 fd_intern (evfd); /* doing it twice doesn't hurt */ 2305 write (evpipe [1], &counter, sizeof (uint64_t));
1174 ev_io_set (&pipe_w, evfd, EV_READ);
1175 } 2306 }
1176 else 2307 else
1177#endif 2308#endif
1178 { 2309 {
1179 while (pipe (evpipe)) 2310#ifdef _WIN32
1180 ev_syserr ("(libev) error creating signal/async pipe"); 2311 WSABUF buf;
1181 2312 DWORD sent;
1182 fd_intern (evpipe [0]); 2313 buf.buf = &buf;
1183 fd_intern (evpipe [1]); 2314 buf.len = 1;
1184 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2315 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2316#else
2317 write (evpipe [1], &(evpipe [1]), 1);
2318#endif
1185 } 2319 }
1186
1187 ev_io_start (EV_A_ &pipe_w);
1188 ev_unref (EV_A); /* watcher should not keep loop alive */
1189 }
1190}
1191
1192inline_size void
1193evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1194{
1195 if (!*flag)
1196 {
1197 int old_errno = errno; /* save errno because write might clobber it */
1198
1199 *flag = 1;
1200
1201#if EV_USE_EVENTFD
1202 if (evfd >= 0)
1203 {
1204 uint64_t counter = 1;
1205 write (evfd, &counter, sizeof (uint64_t));
1206 }
1207 else
1208#endif
1209 write (evpipe [1], &old_errno, 1);
1210 2320
1211 errno = old_errno; 2321 errno = old_errno;
1212 } 2322 }
1213} 2323}
1214 2324
… …
1217static void 2327static void
1218pipecb (EV_P_ ev_io *iow, int revents) 2328pipecb (EV_P_ ev_io *iow, int revents)
1219{ 2329{
1220 int i; 2330 int i;
1221 2331
2332 if (revents & EV_READ)
2333 {
1222#if EV_USE_EVENTFD 2334#if EV_USE_EVENTFD
1223 if (evfd >= 0) 2335 if (evpipe [0] < 0)
1224 { 2336 {
1225 uint64_t counter; 2337 uint64_t counter;
1226 read (evfd, &counter, sizeof (uint64_t)); 2338 read (evpipe [1], &counter, sizeof (uint64_t));
1227 } 2339 }
1228 else 2340 else
1229#endif 2341#endif
1230 { 2342 {
1231 char dummy; 2343 char dummy[4];
2344#ifdef _WIN32
2345 WSABUF buf;
2346 DWORD recvd;
2347 DWORD flags = 0;
2348 buf.buf = dummy;
2349 buf.len = sizeof (dummy);
2350 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2351#else
1232 read (evpipe [0], &dummy, 1); 2352 read (evpipe [0], &dummy, sizeof (dummy));
2353#endif
2354 }
1233 } 2355 }
1234 2356
2357 pipe_write_skipped = 0;
2358
2359 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2360
2361#if EV_SIGNAL_ENABLE
1235 if (sig_pending) 2362 if (sig_pending)
1236 { 2363 {
1237 sig_pending = 0; 2364 sig_pending = 0;
2365
2366 ECB_MEMORY_FENCE;
1238 2367
1239 for (i = EV_NSIG - 1; i--; ) 2368 for (i = EV_NSIG - 1; i--; )
1240 if (expect_false (signals [i].pending)) 2369 if (expect_false (signals [i].pending))
1241 ev_feed_signal_event (EV_A_ i + 1); 2370 ev_feed_signal_event (EV_A_ i + 1);
1242 } 2371 }
2372#endif
1243 2373
1244#if EV_ASYNC_ENABLE 2374#if EV_ASYNC_ENABLE
1245 if (async_pending) 2375 if (async_pending)
1246 { 2376 {
1247 async_pending = 0; 2377 async_pending = 0;
2378
2379 ECB_MEMORY_FENCE;
1248 2380
1249 for (i = asynccnt; i--; ) 2381 for (i = asynccnt; i--; )
1250 if (asyncs [i]->sent) 2382 if (asyncs [i]->sent)
1251 { 2383 {
1252 asyncs [i]->sent = 0; 2384 asyncs [i]->sent = 0;
2385 ECB_MEMORY_FENCE_RELEASE;
1253 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2386 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1254 } 2387 }
1255 } 2388 }
1256#endif 2389#endif
1257} 2390}
1258 2391
1259/*****************************************************************************/ 2392/*****************************************************************************/
1260 2393
2394void
2395ev_feed_signal (int signum) EV_THROW
2396{
2397#if EV_MULTIPLICITY
2398 EV_P;
2399 ECB_MEMORY_FENCE_ACQUIRE;
2400 EV_A = signals [signum - 1].loop;
2401
2402 if (!EV_A)
2403 return;
2404#endif
2405
2406 signals [signum - 1].pending = 1;
2407 evpipe_write (EV_A_ &sig_pending);
2408}
2409
1261static void 2410static void
1262ev_sighandler (int signum) 2411ev_sighandler (int signum)
1263{ 2412{
1264#if EV_MULTIPLICITY
1265 EV_P = signals [signum - 1].loop;
1266#endif
1267
1268#if _WIN32 2413#ifdef _WIN32
1269 signal (signum, ev_sighandler); 2414 signal (signum, ev_sighandler);
1270#endif 2415#endif
1271 2416
1272 signals [signum - 1].pending = 1; 2417 ev_feed_signal (signum);
1273 evpipe_write (EV_A_ &sig_pending);
1274} 2418}
1275 2419
1276void noinline 2420void noinline
1277ev_feed_signal_event (EV_P_ int signum) 2421ev_feed_signal_event (EV_P_ int signum) EV_THROW
1278{ 2422{
1279 WL w; 2423 WL w;
1280 2424
1281 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2425 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1282 return; 2426 return;
1283 2427
1284 --signum; 2428 --signum;
1285 2429
1286#if EV_MULTIPLICITY 2430#if EV_MULTIPLICITY
… …
1290 if (expect_false (signals [signum].loop != EV_A)) 2434 if (expect_false (signals [signum].loop != EV_A))
1291 return; 2435 return;
1292#endif 2436#endif
1293 2437
1294 signals [signum].pending = 0; 2438 signals [signum].pending = 0;
2439 ECB_MEMORY_FENCE_RELEASE;
1295 2440
1296 for (w = signals [signum].head; w; w = w->next) 2441 for (w = signals [signum].head; w; w = w->next)
1297 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2442 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1298} 2443}
1299 2444
… …
1315 break; 2460 break;
1316 } 2461 }
1317} 2462}
1318#endif 2463#endif
1319 2464
2465#endif
2466
1320/*****************************************************************************/ 2467/*****************************************************************************/
1321 2468
2469#if EV_CHILD_ENABLE
1322static WL childs [EV_PID_HASHSIZE]; 2470static WL childs [EV_PID_HASHSIZE];
1323
1324#ifndef _WIN32
1325 2471
1326static ev_signal childev; 2472static ev_signal childev;
1327 2473
1328#ifndef WIFCONTINUED 2474#ifndef WIFCONTINUED
1329# define WIFCONTINUED(status) 0 2475# define WIFCONTINUED(status) 0
… …
1334child_reap (EV_P_ int chain, int pid, int status) 2480child_reap (EV_P_ int chain, int pid, int status)
1335{ 2481{
1336 ev_child *w; 2482 ev_child *w;
1337 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2483 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1338 2484
1339 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2485 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1340 { 2486 {
1341 if ((w->pid == pid || !w->pid) 2487 if ((w->pid == pid || !w->pid)
1342 && (!traced || (w->flags & 1))) 2488 && (!traced || (w->flags & 1)))
1343 { 2489 {
1344 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2490 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1369 /* make sure we are called again until all children have been reaped */ 2515 /* make sure we are called again until all children have been reaped */
1370 /* we need to do it this way so that the callback gets called before we continue */ 2516 /* we need to do it this way so that the callback gets called before we continue */
1371 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2517 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1372 2518
1373 child_reap (EV_A_ pid, pid, status); 2519 child_reap (EV_A_ pid, pid, status);
1374 if (EV_PID_HASHSIZE > 1) 2520 if ((EV_PID_HASHSIZE) > 1)
1375 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2521 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1376} 2522}
1377 2523
1378#endif 2524#endif
1379 2525
1380/*****************************************************************************/ 2526/*****************************************************************************/
1381 2527
2528#if EV_USE_IOCP
2529# include "ev_iocp.c"
2530#endif
1382#if EV_USE_PORT 2531#if EV_USE_PORT
1383# include "ev_port.c" 2532# include "ev_port.c"
1384#endif 2533#endif
1385#if EV_USE_KQUEUE 2534#if EV_USE_KQUEUE
1386# include "ev_kqueue.c" 2535# include "ev_kqueue.c"
… …
1393#endif 2542#endif
1394#if EV_USE_SELECT 2543#if EV_USE_SELECT
1395# include "ev_select.c" 2544# include "ev_select.c"
1396#endif 2545#endif
1397 2546
1398int 2547int ecb_cold
1399ev_version_major (void) 2548ev_version_major (void) EV_THROW
1400{ 2549{
1401 return EV_VERSION_MAJOR; 2550 return EV_VERSION_MAJOR;
1402} 2551}
1403 2552
1404int 2553int ecb_cold
1405ev_version_minor (void) 2554ev_version_minor (void) EV_THROW
1406{ 2555{
1407 return EV_VERSION_MINOR; 2556 return EV_VERSION_MINOR;
1408} 2557}
1409 2558
1410/* return true if we are running with elevated privileges and should ignore env variables */ 2559/* return true if we are running with elevated privileges and should ignore env variables */
1411int inline_size 2560int inline_size ecb_cold
1412enable_secure (void) 2561enable_secure (void)
1413{ 2562{
1414#ifdef _WIN32 2563#ifdef _WIN32
1415 return 0; 2564 return 0;
1416#else 2565#else
1417 return getuid () != geteuid () 2566 return getuid () != geteuid ()
1418 || getgid () != getegid (); 2567 || getgid () != getegid ();
1419#endif 2568#endif
1420} 2569}
1421 2570
1422unsigned int 2571unsigned int ecb_cold
1423ev_supported_backends (void) 2572ev_supported_backends (void) EV_THROW
1424{ 2573{
1425 unsigned int flags = 0; 2574 unsigned int flags = 0;
1426 2575
1427 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2576 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1428 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2577 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1431 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2580 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1432 2581
1433 return flags; 2582 return flags;
1434} 2583}
1435 2584
1436unsigned int 2585unsigned int ecb_cold
1437ev_recommended_backends (void) 2586ev_recommended_backends (void) EV_THROW
1438{ 2587{
1439 unsigned int flags = ev_supported_backends (); 2588 unsigned int flags = ev_supported_backends ();
1440 2589
1441#ifndef __NetBSD__ 2590#ifndef __NetBSD__
1442 /* kqueue is borked on everything but netbsd apparently */ 2591 /* kqueue is borked on everything but netbsd apparently */
… …
1446#ifdef __APPLE__ 2595#ifdef __APPLE__
1447 /* only select works correctly on that "unix-certified" platform */ 2596 /* only select works correctly on that "unix-certified" platform */
1448 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2597 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1449 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2598 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1450#endif 2599#endif
2600#ifdef __FreeBSD__
2601 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2602#endif
1451 2603
1452 return flags; 2604 return flags;
1453} 2605}
1454 2606
2607unsigned int ecb_cold
2608ev_embeddable_backends (void) EV_THROW
2609{
2610 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2611
2612 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2613 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2614 flags &= ~EVBACKEND_EPOLL;
2615
2616 return flags;
2617}
2618
1455unsigned int 2619unsigned int
1456ev_embeddable_backends (void) 2620ev_backend (EV_P) EV_THROW
1457{ 2621{
1458 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2622 return backend;
1459
1460 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1461 /* please fix it and tell me how to detect the fix */
1462 flags &= ~EVBACKEND_EPOLL;
1463
1464 return flags;
1465} 2623}
1466 2624
2625#if EV_FEATURE_API
1467unsigned int 2626unsigned int
1468ev_backend (EV_P) 2627ev_iteration (EV_P) EV_THROW
1469{ 2628{
1470 return backend; 2629 return loop_count;
1471} 2630}
1472 2631
1473#if EV_MINIMAL < 2
1474unsigned int 2632unsigned int
1475ev_loop_count (EV_P) 2633ev_depth (EV_P) EV_THROW
1476{
1477 return loop_count;
1478}
1479
1480unsigned int
1481ev_loop_depth (EV_P)
1482{ 2634{
1483 return loop_depth; 2635 return loop_depth;
1484} 2636}
1485 2637
1486void 2638void
1487ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2639ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1488{ 2640{
1489 io_blocktime = interval; 2641 io_blocktime = interval;
1490} 2642}
1491 2643
1492void 2644void
1493ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2645ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1494{ 2646{
1495 timeout_blocktime = interval; 2647 timeout_blocktime = interval;
1496} 2648}
1497 2649
1498void 2650void
1499ev_set_userdata (EV_P_ void *data) 2651ev_set_userdata (EV_P_ void *data) EV_THROW
1500{ 2652{
1501 userdata = data; 2653 userdata = data;
1502} 2654}
1503 2655
1504void * 2656void *
1505ev_userdata (EV_P) 2657ev_userdata (EV_P) EV_THROW
1506{ 2658{
1507 return userdata; 2659 return userdata;
1508} 2660}
1509 2661
2662void
1510void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2663ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1511{ 2664{
1512 invoke_cb = invoke_pending_cb; 2665 invoke_cb = invoke_pending_cb;
1513} 2666}
1514 2667
2668void
1515void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2669ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1516{ 2670{
1517 release_cb = release; 2671 release_cb = release;
1518 acquire_cb = acquire; 2672 acquire_cb = acquire;
1519} 2673}
1520#endif 2674#endif
1521 2675
1522/* initialise a loop structure, must be zero-initialised */ 2676/* initialise a loop structure, must be zero-initialised */
1523static void noinline 2677static void noinline ecb_cold
1524loop_init (EV_P_ unsigned int flags) 2678loop_init (EV_P_ unsigned int flags) EV_THROW
1525{ 2679{
1526 if (!backend) 2680 if (!backend)
1527 { 2681 {
2682 origflags = flags;
2683
1528#if EV_USE_REALTIME 2684#if EV_USE_REALTIME
1529 if (!have_realtime) 2685 if (!have_realtime)
1530 { 2686 {
1531 struct timespec ts; 2687 struct timespec ts;
1532 2688
… …
1554 if (!(flags & EVFLAG_NOENV) 2710 if (!(flags & EVFLAG_NOENV)
1555 && !enable_secure () 2711 && !enable_secure ()
1556 && getenv ("LIBEV_FLAGS")) 2712 && getenv ("LIBEV_FLAGS"))
1557 flags = atoi (getenv ("LIBEV_FLAGS")); 2713 flags = atoi (getenv ("LIBEV_FLAGS"));
1558 2714
1559 ev_rt_now = ev_time (); 2715 ev_rt_now = ev_time ();
1560 mn_now = get_clock (); 2716 mn_now = get_clock ();
1561 now_floor = mn_now; 2717 now_floor = mn_now;
1562 rtmn_diff = ev_rt_now - mn_now; 2718 rtmn_diff = ev_rt_now - mn_now;
1563#if EV_MINIMAL < 2 2719#if EV_FEATURE_API
1564 invoke_cb = ev_invoke_pending; 2720 invoke_cb = ev_invoke_pending;
1565#endif 2721#endif
1566 2722
1567 io_blocktime = 0.; 2723 io_blocktime = 0.;
1568 timeout_blocktime = 0.; 2724 timeout_blocktime = 0.;
1569 backend = 0; 2725 backend = 0;
1570 backend_fd = -1; 2726 backend_fd = -1;
1571 sig_pending = 0; 2727 sig_pending = 0;
1572#if EV_ASYNC_ENABLE 2728#if EV_ASYNC_ENABLE
1573 async_pending = 0; 2729 async_pending = 0;
1574#endif 2730#endif
2731 pipe_write_skipped = 0;
2732 pipe_write_wanted = 0;
2733 evpipe [0] = -1;
2734 evpipe [1] = -1;
1575#if EV_USE_INOTIFY 2735#if EV_USE_INOTIFY
1576 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2736 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1577#endif 2737#endif
1578#if EV_USE_SIGNALFD 2738#if EV_USE_SIGNALFD
1579 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2739 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1580#endif 2740#endif
1581 2741
1582 if (!(flags & 0x0000ffffU)) 2742 if (!(flags & EVBACKEND_MASK))
1583 flags |= ev_recommended_backends (); 2743 flags |= ev_recommended_backends ();
1584 2744
2745#if EV_USE_IOCP
2746 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2747#endif
1585#if EV_USE_PORT 2748#if EV_USE_PORT
1586 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2749 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1587#endif 2750#endif
1588#if EV_USE_KQUEUE 2751#if EV_USE_KQUEUE
1589 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2752 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1598 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2761 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1599#endif 2762#endif
1600 2763
1601 ev_prepare_init (&pending_w, pendingcb); 2764 ev_prepare_init (&pending_w, pendingcb);
1602 2765
2766#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1603 ev_init (&pipe_w, pipecb); 2767 ev_init (&pipe_w, pipecb);
1604 ev_set_priority (&pipe_w, EV_MAXPRI); 2768 ev_set_priority (&pipe_w, EV_MAXPRI);
2769#endif
1605 } 2770 }
1606} 2771}
1607 2772
1608/* free up a loop structure */ 2773/* free up a loop structure */
1609static void noinline 2774void ecb_cold
1610loop_destroy (EV_P) 2775ev_loop_destroy (EV_P)
1611{ 2776{
1612 int i; 2777 int i;
2778
2779#if EV_MULTIPLICITY
2780 /* mimic free (0) */
2781 if (!EV_A)
2782 return;
2783#endif
2784
2785#if EV_CLEANUP_ENABLE
2786 /* queue cleanup watchers (and execute them) */
2787 if (expect_false (cleanupcnt))
2788 {
2789 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2790 EV_INVOKE_PENDING;
2791 }
2792#endif
2793
2794#if EV_CHILD_ENABLE
2795 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2796 {
2797 ev_ref (EV_A); /* child watcher */
2798 ev_signal_stop (EV_A_ &childev);
2799 }
2800#endif
1613 2801
1614 if (ev_is_active (&pipe_w)) 2802 if (ev_is_active (&pipe_w))
1615 { 2803 {
1616 /*ev_ref (EV_A);*/ 2804 /*ev_ref (EV_A);*/
1617 /*ev_io_stop (EV_A_ &pipe_w);*/ 2805 /*ev_io_stop (EV_A_ &pipe_w);*/
1618 2806
1619#if EV_USE_EVENTFD 2807 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1620 if (evfd >= 0) 2808 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1621 close (evfd);
1622#endif
1623
1624 if (evpipe [0] >= 0)
1625 {
1626 close (evpipe [0]);
1627 close (evpipe [1]);
1628 }
1629 } 2809 }
1630 2810
1631#if EV_USE_SIGNALFD 2811#if EV_USE_SIGNALFD
1632 if (ev_is_active (&sigfd_w)) 2812 if (ev_is_active (&sigfd_w))
1633 {
1634 /*ev_ref (EV_A);*/
1635 /*ev_io_stop (EV_A_ &sigfd_w);*/
1636
1637 close (sigfd); 2813 close (sigfd);
1638 }
1639#endif 2814#endif
1640 2815
1641#if EV_USE_INOTIFY 2816#if EV_USE_INOTIFY
1642 if (fs_fd >= 0) 2817 if (fs_fd >= 0)
1643 close (fs_fd); 2818 close (fs_fd);
1644#endif 2819#endif
1645 2820
1646 if (backend_fd >= 0) 2821 if (backend_fd >= 0)
1647 close (backend_fd); 2822 close (backend_fd);
1648 2823
2824#if EV_USE_IOCP
2825 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2826#endif
1649#if EV_USE_PORT 2827#if EV_USE_PORT
1650 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2828 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1651#endif 2829#endif
1652#if EV_USE_KQUEUE 2830#if EV_USE_KQUEUE
1653 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2831 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1680 array_free (periodic, EMPTY); 2858 array_free (periodic, EMPTY);
1681#endif 2859#endif
1682#if EV_FORK_ENABLE 2860#if EV_FORK_ENABLE
1683 array_free (fork, EMPTY); 2861 array_free (fork, EMPTY);
1684#endif 2862#endif
2863#if EV_CLEANUP_ENABLE
2864 array_free (cleanup, EMPTY);
2865#endif
1685 array_free (prepare, EMPTY); 2866 array_free (prepare, EMPTY);
1686 array_free (check, EMPTY); 2867 array_free (check, EMPTY);
1687#if EV_ASYNC_ENABLE 2868#if EV_ASYNC_ENABLE
1688 array_free (async, EMPTY); 2869 array_free (async, EMPTY);
1689#endif 2870#endif
1690 2871
1691 backend = 0; 2872 backend = 0;
2873
2874#if EV_MULTIPLICITY
2875 if (ev_is_default_loop (EV_A))
2876#endif
2877 ev_default_loop_ptr = 0;
2878#if EV_MULTIPLICITY
2879 else
2880 ev_free (EV_A);
2881#endif
1692} 2882}
1693 2883
1694#if EV_USE_INOTIFY 2884#if EV_USE_INOTIFY
1695inline_size void infy_fork (EV_P); 2885inline_size void infy_fork (EV_P);
1696#endif 2886#endif
… …
1709#endif 2899#endif
1710#if EV_USE_INOTIFY 2900#if EV_USE_INOTIFY
1711 infy_fork (EV_A); 2901 infy_fork (EV_A);
1712#endif 2902#endif
1713 2903
2904#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1714 if (ev_is_active (&pipe_w)) 2905 if (ev_is_active (&pipe_w))
1715 { 2906 {
1716 /* this "locks" the handlers against writing to the pipe */ 2907 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1717 /* while we modify the fd vars */
1718 sig_pending = 1;
1719#if EV_ASYNC_ENABLE
1720 async_pending = 1;
1721#endif
1722 2908
1723 ev_ref (EV_A); 2909 ev_ref (EV_A);
1724 ev_io_stop (EV_A_ &pipe_w); 2910 ev_io_stop (EV_A_ &pipe_w);
1725 2911
1726#if EV_USE_EVENTFD
1727 if (evfd >= 0)
1728 close (evfd);
1729#endif
1730
1731 if (evpipe [0] >= 0) 2912 if (evpipe [0] >= 0)
1732 { 2913 EV_WIN32_CLOSE_FD (evpipe [0]);
1733 close (evpipe [0]);
1734 close (evpipe [1]);
1735 }
1736 2914
1737 evpipe_init (EV_A); 2915 evpipe_init (EV_A);
1738 /* now iterate over everything, in case we missed something */ 2916 /* iterate over everything, in case we missed something before */
1739 pipecb (EV_A_ &pipe_w, EV_READ); 2917 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1740 } 2918 }
2919#endif
1741 2920
1742 postfork = 0; 2921 postfork = 0;
1743} 2922}
1744 2923
1745#if EV_MULTIPLICITY 2924#if EV_MULTIPLICITY
1746 2925
1747struct ev_loop * 2926struct ev_loop * ecb_cold
1748ev_loop_new (unsigned int flags) 2927ev_loop_new (unsigned int flags) EV_THROW
1749{ 2928{
1750 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2929 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1751 2930
1752 memset (EV_A, 0, sizeof (struct ev_loop)); 2931 memset (EV_A, 0, sizeof (struct ev_loop));
1753 loop_init (EV_A_ flags); 2932 loop_init (EV_A_ flags);
1754 2933
1755 if (ev_backend (EV_A)) 2934 if (ev_backend (EV_A))
1756 return EV_A; 2935 return EV_A;
1757 2936
2937 ev_free (EV_A);
1758 return 0; 2938 return 0;
1759} 2939}
1760 2940
1761void
1762ev_loop_destroy (EV_P)
1763{
1764 loop_destroy (EV_A);
1765 ev_free (loop);
1766}
1767
1768void
1769ev_loop_fork (EV_P)
1770{
1771 postfork = 1; /* must be in line with ev_default_fork */
1772}
1773#endif /* multiplicity */ 2941#endif /* multiplicity */
1774 2942
1775#if EV_VERIFY 2943#if EV_VERIFY
1776static void noinline 2944static void noinline ecb_cold
1777verify_watcher (EV_P_ W w) 2945verify_watcher (EV_P_ W w)
1778{ 2946{
1779 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2947 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1780 2948
1781 if (w->pending) 2949 if (w->pending)
1782 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2950 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1783} 2951}
1784 2952
1785static void noinline 2953static void noinline ecb_cold
1786verify_heap (EV_P_ ANHE *heap, int N) 2954verify_heap (EV_P_ ANHE *heap, int N)
1787{ 2955{
1788 int i; 2956 int i;
1789 2957
1790 for (i = HEAP0; i < N + HEAP0; ++i) 2958 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1795 2963
1796 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2964 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1797 } 2965 }
1798} 2966}
1799 2967
1800static void noinline 2968static void noinline ecb_cold
1801array_verify (EV_P_ W *ws, int cnt) 2969array_verify (EV_P_ W *ws, int cnt)
1802{ 2970{
1803 while (cnt--) 2971 while (cnt--)
1804 { 2972 {
1805 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2973 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1806 verify_watcher (EV_A_ ws [cnt]); 2974 verify_watcher (EV_A_ ws [cnt]);
1807 } 2975 }
1808} 2976}
1809#endif 2977#endif
1810 2978
1811#if EV_MINIMAL < 2 2979#if EV_FEATURE_API
1812void 2980void ecb_cold
1813ev_loop_verify (EV_P) 2981ev_verify (EV_P) EV_THROW
1814{ 2982{
1815#if EV_VERIFY 2983#if EV_VERIFY
1816 int i; 2984 int i;
1817 WL w; 2985 WL w, w2;
1818 2986
1819 assert (activecnt >= -1); 2987 assert (activecnt >= -1);
1820 2988
1821 assert (fdchangemax >= fdchangecnt); 2989 assert (fdchangemax >= fdchangecnt);
1822 for (i = 0; i < fdchangecnt; ++i) 2990 for (i = 0; i < fdchangecnt; ++i)
1823 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2991 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1824 2992
1825 assert (anfdmax >= 0); 2993 assert (anfdmax >= 0);
1826 for (i = 0; i < anfdmax; ++i) 2994 for (i = 0; i < anfdmax; ++i)
2995 {
2996 int j = 0;
2997
1827 for (w = anfds [i].head; w; w = w->next) 2998 for (w = w2 = anfds [i].head; w; w = w->next)
1828 { 2999 {
1829 verify_watcher (EV_A_ (W)w); 3000 verify_watcher (EV_A_ (W)w);
3001
3002 if (j++ & 1)
3003 {
3004 assert (("libev: io watcher list contains a loop", w != w2));
3005 w2 = w2->next;
3006 }
3007
1830 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3008 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1831 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3009 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1832 } 3010 }
3011 }
1833 3012
1834 assert (timermax >= timercnt); 3013 assert (timermax >= timercnt);
1835 verify_heap (EV_A_ timers, timercnt); 3014 verify_heap (EV_A_ timers, timercnt);
1836 3015
1837#if EV_PERIODIC_ENABLE 3016#if EV_PERIODIC_ENABLE
… …
1852#if EV_FORK_ENABLE 3031#if EV_FORK_ENABLE
1853 assert (forkmax >= forkcnt); 3032 assert (forkmax >= forkcnt);
1854 array_verify (EV_A_ (W *)forks, forkcnt); 3033 array_verify (EV_A_ (W *)forks, forkcnt);
1855#endif 3034#endif
1856 3035
3036#if EV_CLEANUP_ENABLE
3037 assert (cleanupmax >= cleanupcnt);
3038 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3039#endif
3040
1857#if EV_ASYNC_ENABLE 3041#if EV_ASYNC_ENABLE
1858 assert (asyncmax >= asynccnt); 3042 assert (asyncmax >= asynccnt);
1859 array_verify (EV_A_ (W *)asyncs, asynccnt); 3043 array_verify (EV_A_ (W *)asyncs, asynccnt);
1860#endif 3044#endif
1861 3045
3046#if EV_PREPARE_ENABLE
1862 assert (preparemax >= preparecnt); 3047 assert (preparemax >= preparecnt);
1863 array_verify (EV_A_ (W *)prepares, preparecnt); 3048 array_verify (EV_A_ (W *)prepares, preparecnt);
3049#endif
1864 3050
3051#if EV_CHECK_ENABLE
1865 assert (checkmax >= checkcnt); 3052 assert (checkmax >= checkcnt);
1866 array_verify (EV_A_ (W *)checks, checkcnt); 3053 array_verify (EV_A_ (W *)checks, checkcnt);
3054#endif
1867 3055
1868# if 0 3056# if 0
3057#if EV_CHILD_ENABLE
1869 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3058 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1870 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3059 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3060#endif
1871# endif 3061# endif
1872#endif 3062#endif
1873} 3063}
1874#endif 3064#endif
1875 3065
1876#if EV_MULTIPLICITY 3066#if EV_MULTIPLICITY
1877struct ev_loop * 3067struct ev_loop * ecb_cold
1878ev_default_loop_init (unsigned int flags)
1879#else 3068#else
1880int 3069int
3070#endif
1881ev_default_loop (unsigned int flags) 3071ev_default_loop (unsigned int flags) EV_THROW
1882#endif
1883{ 3072{
1884 if (!ev_default_loop_ptr) 3073 if (!ev_default_loop_ptr)
1885 { 3074 {
1886#if EV_MULTIPLICITY 3075#if EV_MULTIPLICITY
1887 EV_P = ev_default_loop_ptr = &default_loop_struct; 3076 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1891 3080
1892 loop_init (EV_A_ flags); 3081 loop_init (EV_A_ flags);
1893 3082
1894 if (ev_backend (EV_A)) 3083 if (ev_backend (EV_A))
1895 { 3084 {
1896#ifndef _WIN32 3085#if EV_CHILD_ENABLE
1897 ev_signal_init (&childev, childcb, SIGCHLD); 3086 ev_signal_init (&childev, childcb, SIGCHLD);
1898 ev_set_priority (&childev, EV_MAXPRI); 3087 ev_set_priority (&childev, EV_MAXPRI);
1899 ev_signal_start (EV_A_ &childev); 3088 ev_signal_start (EV_A_ &childev);
1900 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3089 ev_unref (EV_A); /* child watcher should not keep loop alive */
1901#endif 3090#endif
… …
1906 3095
1907 return ev_default_loop_ptr; 3096 return ev_default_loop_ptr;
1908} 3097}
1909 3098
1910void 3099void
1911ev_default_destroy (void) 3100ev_loop_fork (EV_P) EV_THROW
1912{ 3101{
1913#if EV_MULTIPLICITY 3102 postfork = 1;
1914 EV_P = ev_default_loop_ptr;
1915#endif
1916
1917 ev_default_loop_ptr = 0;
1918
1919#ifndef _WIN32
1920 ev_ref (EV_A); /* child watcher */
1921 ev_signal_stop (EV_A_ &childev);
1922#endif
1923
1924 loop_destroy (EV_A);
1925}
1926
1927void
1928ev_default_fork (void)
1929{
1930#if EV_MULTIPLICITY
1931 EV_P = ev_default_loop_ptr;
1932#endif
1933
1934 postfork = 1; /* must be in line with ev_loop_fork */
1935} 3103}
1936 3104
1937/*****************************************************************************/ 3105/*****************************************************************************/
1938 3106
1939void 3107void
… …
1941{ 3109{
1942 EV_CB_INVOKE ((W)w, revents); 3110 EV_CB_INVOKE ((W)w, revents);
1943} 3111}
1944 3112
1945unsigned int 3113unsigned int
1946ev_pending_count (EV_P) 3114ev_pending_count (EV_P) EV_THROW
1947{ 3115{
1948 int pri; 3116 int pri;
1949 unsigned int count = 0; 3117 unsigned int count = 0;
1950 3118
1951 for (pri = NUMPRI; pri--; ) 3119 for (pri = NUMPRI; pri--; )
… …
1955} 3123}
1956 3124
1957void noinline 3125void noinline
1958ev_invoke_pending (EV_P) 3126ev_invoke_pending (EV_P)
1959{ 3127{
1960 int pri; 3128 pendingpri = NUMPRI;
1961 3129
1962 for (pri = NUMPRI; pri--; ) 3130 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3131 {
3132 --pendingpri;
3133
1963 while (pendingcnt [pri]) 3134 while (pendingcnt [pendingpri])
1964 { 3135 {
1965 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3136 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1966 3137
1967 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1968 /* ^ this is no longer true, as pending_w could be here */
1969
1970 p->w->pending = 0; 3138 p->w->pending = 0;
1971 EV_CB_INVOKE (p->w, p->events); 3139 EV_CB_INVOKE (p->w, p->events);
1972 EV_FREQUENT_CHECK; 3140 EV_FREQUENT_CHECK;
1973 } 3141 }
3142 }
1974} 3143}
1975 3144
1976#if EV_IDLE_ENABLE 3145#if EV_IDLE_ENABLE
1977/* make idle watchers pending. this handles the "call-idle */ 3146/* make idle watchers pending. this handles the "call-idle */
1978/* only when higher priorities are idle" logic */ 3147/* only when higher priorities are idle" logic */
… …
2030 EV_FREQUENT_CHECK; 3199 EV_FREQUENT_CHECK;
2031 feed_reverse (EV_A_ (W)w); 3200 feed_reverse (EV_A_ (W)w);
2032 } 3201 }
2033 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3202 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2034 3203
2035 feed_reverse_done (EV_A_ EV_TIMEOUT); 3204 feed_reverse_done (EV_A_ EV_TIMER);
2036 } 3205 }
2037} 3206}
2038 3207
2039#if EV_PERIODIC_ENABLE 3208#if EV_PERIODIC_ENABLE
3209
3210static void noinline
3211periodic_recalc (EV_P_ ev_periodic *w)
3212{
3213 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3214 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3215
3216 /* the above almost always errs on the low side */
3217 while (at <= ev_rt_now)
3218 {
3219 ev_tstamp nat = at + w->interval;
3220
3221 /* when resolution fails us, we use ev_rt_now */
3222 if (expect_false (nat == at))
3223 {
3224 at = ev_rt_now;
3225 break;
3226 }
3227
3228 at = nat;
3229 }
3230
3231 ev_at (w) = at;
3232}
3233
2040/* make periodics pending */ 3234/* make periodics pending */
2041inline_size void 3235inline_size void
2042periodics_reify (EV_P) 3236periodics_reify (EV_P)
2043{ 3237{
2044 EV_FREQUENT_CHECK; 3238 EV_FREQUENT_CHECK;
2045 3239
2046 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3240 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2047 { 3241 {
2048 int feed_count = 0;
2049
2050 do 3242 do
2051 { 3243 {
2052 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3244 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2053 3245
2054 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3246 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2063 ANHE_at_cache (periodics [HEAP0]); 3255 ANHE_at_cache (periodics [HEAP0]);
2064 downheap (periodics, periodiccnt, HEAP0); 3256 downheap (periodics, periodiccnt, HEAP0);
2065 } 3257 }
2066 else if (w->interval) 3258 else if (w->interval)
2067 { 3259 {
2068 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3260 periodic_recalc (EV_A_ w);
2069 /* if next trigger time is not sufficiently in the future, put it there */
2070 /* this might happen because of floating point inexactness */
2071 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2072 {
2073 ev_at (w) += w->interval;
2074
2075 /* if interval is unreasonably low we might still have a time in the past */
2076 /* so correct this. this will make the periodic very inexact, but the user */
2077 /* has effectively asked to get triggered more often than possible */
2078 if (ev_at (w) < ev_rt_now)
2079 ev_at (w) = ev_rt_now;
2080 }
2081
2082 ANHE_at_cache (periodics [HEAP0]); 3261 ANHE_at_cache (periodics [HEAP0]);
2083 downheap (periodics, periodiccnt, HEAP0); 3262 downheap (periodics, periodiccnt, HEAP0);
2084 } 3263 }
2085 else 3264 else
2086 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3265 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2093 feed_reverse_done (EV_A_ EV_PERIODIC); 3272 feed_reverse_done (EV_A_ EV_PERIODIC);
2094 } 3273 }
2095} 3274}
2096 3275
2097/* simply recalculate all periodics */ 3276/* simply recalculate all periodics */
2098/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3277/* TODO: maybe ensure that at least one event happens when jumping forward? */
2099static void noinline 3278static void noinline ecb_cold
2100periodics_reschedule (EV_P) 3279periodics_reschedule (EV_P)
2101{ 3280{
2102 int i; 3281 int i;
2103 3282
2104 /* adjust periodics after time jump */ 3283 /* adjust periodics after time jump */
… …
2107 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3286 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2108 3287
2109 if (w->reschedule_cb) 3288 if (w->reschedule_cb)
2110 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3289 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2111 else if (w->interval) 3290 else if (w->interval)
2112 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3291 periodic_recalc (EV_A_ w);
2113 3292
2114 ANHE_at_cache (periodics [i]); 3293 ANHE_at_cache (periodics [i]);
2115 } 3294 }
2116 3295
2117 reheap (periodics, periodiccnt); 3296 reheap (periodics, periodiccnt);
2118} 3297}
2119#endif 3298#endif
2120 3299
2121/* adjust all timers by a given offset */ 3300/* adjust all timers by a given offset */
2122static void noinline 3301static void noinline ecb_cold
2123timers_reschedule (EV_P_ ev_tstamp adjust) 3302timers_reschedule (EV_P_ ev_tstamp adjust)
2124{ 3303{
2125 int i; 3304 int i;
2126 3305
2127 for (i = 0; i < timercnt; ++i) 3306 for (i = 0; i < timercnt; ++i)
… …
2131 ANHE_at_cache (*he); 3310 ANHE_at_cache (*he);
2132 } 3311 }
2133} 3312}
2134 3313
2135/* fetch new monotonic and realtime times from the kernel */ 3314/* fetch new monotonic and realtime times from the kernel */
2136/* also detetc if there was a timejump, and act accordingly */ 3315/* also detect if there was a timejump, and act accordingly */
2137inline_speed void 3316inline_speed void
2138time_update (EV_P_ ev_tstamp max_block) 3317time_update (EV_P_ ev_tstamp max_block)
2139{ 3318{
2140#if EV_USE_MONOTONIC 3319#if EV_USE_MONOTONIC
2141 if (expect_true (have_monotonic)) 3320 if (expect_true (have_monotonic))
… …
2164 * doesn't hurt either as we only do this on time-jumps or 3343 * doesn't hurt either as we only do this on time-jumps or
2165 * in the unlikely event of having been preempted here. 3344 * in the unlikely event of having been preempted here.
2166 */ 3345 */
2167 for (i = 4; --i; ) 3346 for (i = 4; --i; )
2168 { 3347 {
3348 ev_tstamp diff;
2169 rtmn_diff = ev_rt_now - mn_now; 3349 rtmn_diff = ev_rt_now - mn_now;
2170 3350
3351 diff = odiff - rtmn_diff;
3352
2171 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3353 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2172 return; /* all is well */ 3354 return; /* all is well */
2173 3355
2174 ev_rt_now = ev_time (); 3356 ev_rt_now = ev_time ();
2175 mn_now = get_clock (); 3357 mn_now = get_clock ();
2176 now_floor = mn_now; 3358 now_floor = mn_now;
… …
2198 3380
2199 mn_now = ev_rt_now; 3381 mn_now = ev_rt_now;
2200 } 3382 }
2201} 3383}
2202 3384
2203void 3385int
2204ev_loop (EV_P_ int flags) 3386ev_run (EV_P_ int flags)
2205{ 3387{
2206#if EV_MINIMAL < 2 3388#if EV_FEATURE_API
2207 ++loop_depth; 3389 ++loop_depth;
2208#endif 3390#endif
2209 3391
2210 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3392 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2211 3393
2212 loop_done = EVUNLOOP_CANCEL; 3394 loop_done = EVBREAK_CANCEL;
2213 3395
2214 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3396 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2215 3397
2216 do 3398 do
2217 { 3399 {
2218#if EV_VERIFY >= 2 3400#if EV_VERIFY >= 2
2219 ev_loop_verify (EV_A); 3401 ev_verify (EV_A);
2220#endif 3402#endif
2221 3403
2222#ifndef _WIN32 3404#ifndef _WIN32
2223 if (expect_false (curpid)) /* penalise the forking check even more */ 3405 if (expect_false (curpid)) /* penalise the forking check even more */
2224 if (expect_false (getpid () != curpid)) 3406 if (expect_false (getpid () != curpid))
… …
2236 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3418 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2237 EV_INVOKE_PENDING; 3419 EV_INVOKE_PENDING;
2238 } 3420 }
2239#endif 3421#endif
2240 3422
3423#if EV_PREPARE_ENABLE
2241 /* queue prepare watchers (and execute them) */ 3424 /* queue prepare watchers (and execute them) */
2242 if (expect_false (preparecnt)) 3425 if (expect_false (preparecnt))
2243 { 3426 {
2244 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3427 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2245 EV_INVOKE_PENDING; 3428 EV_INVOKE_PENDING;
2246 } 3429 }
3430#endif
2247 3431
2248 if (expect_false (loop_done)) 3432 if (expect_false (loop_done))
2249 break; 3433 break;
2250 3434
2251 /* we might have forked, so reify kernel state if necessary */ 3435 /* we might have forked, so reify kernel state if necessary */
… …
2258 /* calculate blocking time */ 3442 /* calculate blocking time */
2259 { 3443 {
2260 ev_tstamp waittime = 0.; 3444 ev_tstamp waittime = 0.;
2261 ev_tstamp sleeptime = 0.; 3445 ev_tstamp sleeptime = 0.;
2262 3446
3447 /* remember old timestamp for io_blocktime calculation */
3448 ev_tstamp prev_mn_now = mn_now;
3449
3450 /* update time to cancel out callback processing overhead */
3451 time_update (EV_A_ 1e100);
3452
3453 /* from now on, we want a pipe-wake-up */
3454 pipe_write_wanted = 1;
3455
3456 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3457
2263 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3458 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2264 { 3459 {
2265 /* remember old timestamp for io_blocktime calculation */
2266 ev_tstamp prev_mn_now = mn_now;
2267
2268 /* update time to cancel out callback processing overhead */
2269 time_update (EV_A_ 1e100);
2270
2271 waittime = MAX_BLOCKTIME; 3460 waittime = MAX_BLOCKTIME;
2272 3461
2273 if (timercnt) 3462 if (timercnt)
2274 { 3463 {
2275 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3464 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2276 if (waittime > to) waittime = to; 3465 if (waittime > to) waittime = to;
2277 } 3466 }
2278 3467
2279#if EV_PERIODIC_ENABLE 3468#if EV_PERIODIC_ENABLE
2280 if (periodiccnt) 3469 if (periodiccnt)
2281 { 3470 {
2282 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3471 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2283 if (waittime > to) waittime = to; 3472 if (waittime > to) waittime = to;
2284 } 3473 }
2285#endif 3474#endif
2286 3475
2287 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3476 /* don't let timeouts decrease the waittime below timeout_blocktime */
2288 if (expect_false (waittime < timeout_blocktime)) 3477 if (expect_false (waittime < timeout_blocktime))
2289 waittime = timeout_blocktime; 3478 waittime = timeout_blocktime;
3479
3480 /* at this point, we NEED to wait, so we have to ensure */
3481 /* to pass a minimum nonzero value to the backend */
3482 if (expect_false (waittime < backend_mintime))
3483 waittime = backend_mintime;
2290 3484
2291 /* extra check because io_blocktime is commonly 0 */ 3485 /* extra check because io_blocktime is commonly 0 */
2292 if (expect_false (io_blocktime)) 3486 if (expect_false (io_blocktime))
2293 { 3487 {
2294 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3488 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2295 3489
2296 if (sleeptime > waittime - backend_fudge) 3490 if (sleeptime > waittime - backend_mintime)
2297 sleeptime = waittime - backend_fudge; 3491 sleeptime = waittime - backend_mintime;
2298 3492
2299 if (expect_true (sleeptime > 0.)) 3493 if (expect_true (sleeptime > 0.))
2300 { 3494 {
2301 ev_sleep (sleeptime); 3495 ev_sleep (sleeptime);
2302 waittime -= sleeptime; 3496 waittime -= sleeptime;
2303 } 3497 }
2304 } 3498 }
2305 } 3499 }
2306 3500
2307#if EV_MINIMAL < 2 3501#if EV_FEATURE_API
2308 ++loop_count; 3502 ++loop_count;
2309#endif 3503#endif
2310 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3504 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2311 backend_poll (EV_A_ waittime); 3505 backend_poll (EV_A_ waittime);
2312 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3506 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3507
3508 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3509
3510 ECB_MEMORY_FENCE_ACQUIRE;
3511 if (pipe_write_skipped)
3512 {
3513 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3514 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3515 }
3516
2313 3517
2314 /* update ev_rt_now, do magic */ 3518 /* update ev_rt_now, do magic */
2315 time_update (EV_A_ waittime + sleeptime); 3519 time_update (EV_A_ waittime + sleeptime);
2316 } 3520 }
2317 3521
… …
2324#if EV_IDLE_ENABLE 3528#if EV_IDLE_ENABLE
2325 /* queue idle watchers unless other events are pending */ 3529 /* queue idle watchers unless other events are pending */
2326 idle_reify (EV_A); 3530 idle_reify (EV_A);
2327#endif 3531#endif
2328 3532
3533#if EV_CHECK_ENABLE
2329 /* queue check watchers, to be executed first */ 3534 /* queue check watchers, to be executed first */
2330 if (expect_false (checkcnt)) 3535 if (expect_false (checkcnt))
2331 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3536 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3537#endif
2332 3538
2333 EV_INVOKE_PENDING; 3539 EV_INVOKE_PENDING;
2334 } 3540 }
2335 while (expect_true ( 3541 while (expect_true (
2336 activecnt 3542 activecnt
2337 && !loop_done 3543 && !loop_done
2338 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3544 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2339 )); 3545 ));
2340 3546
2341 if (loop_done == EVUNLOOP_ONE) 3547 if (loop_done == EVBREAK_ONE)
2342 loop_done = EVUNLOOP_CANCEL; 3548 loop_done = EVBREAK_CANCEL;
2343 3549
2344#if EV_MINIMAL < 2 3550#if EV_FEATURE_API
2345 --loop_depth; 3551 --loop_depth;
2346#endif 3552#endif
3553
3554 return activecnt;
2347} 3555}
2348 3556
2349void 3557void
2350ev_unloop (EV_P_ int how) 3558ev_break (EV_P_ int how) EV_THROW
2351{ 3559{
2352 loop_done = how; 3560 loop_done = how;
2353} 3561}
2354 3562
2355void 3563void
2356ev_ref (EV_P) 3564ev_ref (EV_P) EV_THROW
2357{ 3565{
2358 ++activecnt; 3566 ++activecnt;
2359} 3567}
2360 3568
2361void 3569void
2362ev_unref (EV_P) 3570ev_unref (EV_P) EV_THROW
2363{ 3571{
2364 --activecnt; 3572 --activecnt;
2365} 3573}
2366 3574
2367void 3575void
2368ev_now_update (EV_P) 3576ev_now_update (EV_P) EV_THROW
2369{ 3577{
2370 time_update (EV_A_ 1e100); 3578 time_update (EV_A_ 1e100);
2371} 3579}
2372 3580
2373void 3581void
2374ev_suspend (EV_P) 3582ev_suspend (EV_P) EV_THROW
2375{ 3583{
2376 ev_now_update (EV_A); 3584 ev_now_update (EV_A);
2377} 3585}
2378 3586
2379void 3587void
2380ev_resume (EV_P) 3588ev_resume (EV_P) EV_THROW
2381{ 3589{
2382 ev_tstamp mn_prev = mn_now; 3590 ev_tstamp mn_prev = mn_now;
2383 3591
2384 ev_now_update (EV_A); 3592 ev_now_update (EV_A);
2385 timers_reschedule (EV_A_ mn_now - mn_prev); 3593 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2424 w->pending = 0; 3632 w->pending = 0;
2425 } 3633 }
2426} 3634}
2427 3635
2428int 3636int
2429ev_clear_pending (EV_P_ void *w) 3637ev_clear_pending (EV_P_ void *w) EV_THROW
2430{ 3638{
2431 W w_ = (W)w; 3639 W w_ = (W)w;
2432 int pending = w_->pending; 3640 int pending = w_->pending;
2433 3641
2434 if (expect_true (pending)) 3642 if (expect_true (pending))
… …
2467} 3675}
2468 3676
2469/*****************************************************************************/ 3677/*****************************************************************************/
2470 3678
2471void noinline 3679void noinline
2472ev_io_start (EV_P_ ev_io *w) 3680ev_io_start (EV_P_ ev_io *w) EV_THROW
2473{ 3681{
2474 int fd = w->fd; 3682 int fd = w->fd;
2475 3683
2476 if (expect_false (ev_is_active (w))) 3684 if (expect_false (ev_is_active (w)))
2477 return; 3685 return;
2478 3686
2479 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3687 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2480 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3688 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2481 3689
2482 EV_FREQUENT_CHECK; 3690 EV_FREQUENT_CHECK;
2483 3691
2484 ev_start (EV_A_ (W)w, 1); 3692 ev_start (EV_A_ (W)w, 1);
2485 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3693 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2486 wlist_add (&anfds[fd].head, (WL)w); 3694 wlist_add (&anfds[fd].head, (WL)w);
2487 3695
3696 /* common bug, apparently */
3697 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3698
2488 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3699 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2489 w->events &= ~EV__IOFDSET; 3700 w->events &= ~EV__IOFDSET;
2490 3701
2491 EV_FREQUENT_CHECK; 3702 EV_FREQUENT_CHECK;
2492} 3703}
2493 3704
2494void noinline 3705void noinline
2495ev_io_stop (EV_P_ ev_io *w) 3706ev_io_stop (EV_P_ ev_io *w) EV_THROW
2496{ 3707{
2497 clear_pending (EV_A_ (W)w); 3708 clear_pending (EV_A_ (W)w);
2498 if (expect_false (!ev_is_active (w))) 3709 if (expect_false (!ev_is_active (w)))
2499 return; 3710 return;
2500 3711
… …
2503 EV_FREQUENT_CHECK; 3714 EV_FREQUENT_CHECK;
2504 3715
2505 wlist_del (&anfds[w->fd].head, (WL)w); 3716 wlist_del (&anfds[w->fd].head, (WL)w);
2506 ev_stop (EV_A_ (W)w); 3717 ev_stop (EV_A_ (W)w);
2507 3718
2508 fd_change (EV_A_ w->fd, 1); 3719 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2509 3720
2510 EV_FREQUENT_CHECK; 3721 EV_FREQUENT_CHECK;
2511} 3722}
2512 3723
2513void noinline 3724void noinline
2514ev_timer_start (EV_P_ ev_timer *w) 3725ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2515{ 3726{
2516 if (expect_false (ev_is_active (w))) 3727 if (expect_false (ev_is_active (w)))
2517 return; 3728 return;
2518 3729
2519 ev_at (w) += mn_now; 3730 ev_at (w) += mn_now;
… …
2533 3744
2534 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3745 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2535} 3746}
2536 3747
2537void noinline 3748void noinline
2538ev_timer_stop (EV_P_ ev_timer *w) 3749ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2539{ 3750{
2540 clear_pending (EV_A_ (W)w); 3751 clear_pending (EV_A_ (W)w);
2541 if (expect_false (!ev_is_active (w))) 3752 if (expect_false (!ev_is_active (w)))
2542 return; 3753 return;
2543 3754
… …
2555 timers [active] = timers [timercnt + HEAP0]; 3766 timers [active] = timers [timercnt + HEAP0];
2556 adjustheap (timers, timercnt, active); 3767 adjustheap (timers, timercnt, active);
2557 } 3768 }
2558 } 3769 }
2559 3770
2560 EV_FREQUENT_CHECK;
2561
2562 ev_at (w) -= mn_now; 3771 ev_at (w) -= mn_now;
2563 3772
2564 ev_stop (EV_A_ (W)w); 3773 ev_stop (EV_A_ (W)w);
3774
3775 EV_FREQUENT_CHECK;
2565} 3776}
2566 3777
2567void noinline 3778void noinline
2568ev_timer_again (EV_P_ ev_timer *w) 3779ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2569{ 3780{
2570 EV_FREQUENT_CHECK; 3781 EV_FREQUENT_CHECK;
3782
3783 clear_pending (EV_A_ (W)w);
2571 3784
2572 if (ev_is_active (w)) 3785 if (ev_is_active (w))
2573 { 3786 {
2574 if (w->repeat) 3787 if (w->repeat)
2575 { 3788 {
… …
2588 3801
2589 EV_FREQUENT_CHECK; 3802 EV_FREQUENT_CHECK;
2590} 3803}
2591 3804
2592ev_tstamp 3805ev_tstamp
2593ev_timer_remaining (EV_P_ ev_timer *w) 3806ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2594{ 3807{
2595 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3808 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2596} 3809}
2597 3810
2598#if EV_PERIODIC_ENABLE 3811#if EV_PERIODIC_ENABLE
2599void noinline 3812void noinline
2600ev_periodic_start (EV_P_ ev_periodic *w) 3813ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2601{ 3814{
2602 if (expect_false (ev_is_active (w))) 3815 if (expect_false (ev_is_active (w)))
2603 return; 3816 return;
2604 3817
2605 if (w->reschedule_cb) 3818 if (w->reschedule_cb)
2606 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3819 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2607 else if (w->interval) 3820 else if (w->interval)
2608 { 3821 {
2609 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3822 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2610 /* this formula differs from the one in periodic_reify because we do not always round up */ 3823 periodic_recalc (EV_A_ w);
2611 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2612 } 3824 }
2613 else 3825 else
2614 ev_at (w) = w->offset; 3826 ev_at (w) = w->offset;
2615 3827
2616 EV_FREQUENT_CHECK; 3828 EV_FREQUENT_CHECK;
… …
2626 3838
2627 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3839 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2628} 3840}
2629 3841
2630void noinline 3842void noinline
2631ev_periodic_stop (EV_P_ ev_periodic *w) 3843ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2632{ 3844{
2633 clear_pending (EV_A_ (W)w); 3845 clear_pending (EV_A_ (W)w);
2634 if (expect_false (!ev_is_active (w))) 3846 if (expect_false (!ev_is_active (w)))
2635 return; 3847 return;
2636 3848
… …
2648 periodics [active] = periodics [periodiccnt + HEAP0]; 3860 periodics [active] = periodics [periodiccnt + HEAP0];
2649 adjustheap (periodics, periodiccnt, active); 3861 adjustheap (periodics, periodiccnt, active);
2650 } 3862 }
2651 } 3863 }
2652 3864
2653 EV_FREQUENT_CHECK;
2654
2655 ev_stop (EV_A_ (W)w); 3865 ev_stop (EV_A_ (W)w);
3866
3867 EV_FREQUENT_CHECK;
2656} 3868}
2657 3869
2658void noinline 3870void noinline
2659ev_periodic_again (EV_P_ ev_periodic *w) 3871ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2660{ 3872{
2661 /* TODO: use adjustheap and recalculation */ 3873 /* TODO: use adjustheap and recalculation */
2662 ev_periodic_stop (EV_A_ w); 3874 ev_periodic_stop (EV_A_ w);
2663 ev_periodic_start (EV_A_ w); 3875 ev_periodic_start (EV_A_ w);
2664} 3876}
… …
2666 3878
2667#ifndef SA_RESTART 3879#ifndef SA_RESTART
2668# define SA_RESTART 0 3880# define SA_RESTART 0
2669#endif 3881#endif
2670 3882
3883#if EV_SIGNAL_ENABLE
3884
2671void noinline 3885void noinline
2672ev_signal_start (EV_P_ ev_signal *w) 3886ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2673{ 3887{
2674 if (expect_false (ev_is_active (w))) 3888 if (expect_false (ev_is_active (w)))
2675 return; 3889 return;
2676 3890
2677 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3891 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2679#if EV_MULTIPLICITY 3893#if EV_MULTIPLICITY
2680 assert (("libev: a signal must not be attached to two different loops", 3894 assert (("libev: a signal must not be attached to two different loops",
2681 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3895 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2682 3896
2683 signals [w->signum - 1].loop = EV_A; 3897 signals [w->signum - 1].loop = EV_A;
3898 ECB_MEMORY_FENCE_RELEASE;
2684#endif 3899#endif
2685 3900
2686 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
2687 3902
2688#if EV_USE_SIGNALFD 3903#if EV_USE_SIGNALFD
… …
2721 if (!((WL)w)->next) 3936 if (!((WL)w)->next)
2722# if EV_USE_SIGNALFD 3937# if EV_USE_SIGNALFD
2723 if (sigfd < 0) /*TODO*/ 3938 if (sigfd < 0) /*TODO*/
2724# endif 3939# endif
2725 { 3940 {
2726# if _WIN32 3941# ifdef _WIN32
3942 evpipe_init (EV_A);
3943
2727 signal (w->signum, ev_sighandler); 3944 signal (w->signum, ev_sighandler);
2728# else 3945# else
2729 struct sigaction sa; 3946 struct sigaction sa;
2730 3947
2731 evpipe_init (EV_A); 3948 evpipe_init (EV_A);
… …
2733 sa.sa_handler = ev_sighandler; 3950 sa.sa_handler = ev_sighandler;
2734 sigfillset (&sa.sa_mask); 3951 sigfillset (&sa.sa_mask);
2735 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3952 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2736 sigaction (w->signum, &sa, 0); 3953 sigaction (w->signum, &sa, 0);
2737 3954
3955 if (origflags & EVFLAG_NOSIGMASK)
3956 {
2738 sigemptyset (&sa.sa_mask); 3957 sigemptyset (&sa.sa_mask);
2739 sigaddset (&sa.sa_mask, w->signum); 3958 sigaddset (&sa.sa_mask, w->signum);
2740 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3959 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3960 }
2741#endif 3961#endif
2742 } 3962 }
2743 3963
2744 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
2745} 3965}
2746 3966
2747void noinline 3967void noinline
2748ev_signal_stop (EV_P_ ev_signal *w) 3968ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2749{ 3969{
2750 clear_pending (EV_A_ (W)w); 3970 clear_pending (EV_A_ (W)w);
2751 if (expect_false (!ev_is_active (w))) 3971 if (expect_false (!ev_is_active (w)))
2752 return; 3972 return;
2753 3973
… …
2762 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3982 signals [w->signum - 1].loop = 0; /* unattach from signal */
2763#endif 3983#endif
2764#if EV_USE_SIGNALFD 3984#if EV_USE_SIGNALFD
2765 if (sigfd >= 0) 3985 if (sigfd >= 0)
2766 { 3986 {
2767 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3987 sigset_t ss;
3988
3989 sigemptyset (&ss);
3990 sigaddset (&ss, w->signum);
2768 sigdelset (&sigfd_set, w->signum); 3991 sigdelset (&sigfd_set, w->signum);
3992
2769 signalfd (sigfd, &sigfd_set, 0); 3993 signalfd (sigfd, &sigfd_set, 0);
2770 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3994 sigprocmask (SIG_UNBLOCK, &ss, 0);
2771 /*TODO: maybe unblock signal? */
2772 } 3995 }
2773 else 3996 else
2774#endif 3997#endif
2775 signal (w->signum, SIG_DFL); 3998 signal (w->signum, SIG_DFL);
2776 } 3999 }
2777 4000
2778 EV_FREQUENT_CHECK; 4001 EV_FREQUENT_CHECK;
2779} 4002}
2780 4003
4004#endif
4005
4006#if EV_CHILD_ENABLE
4007
2781void 4008void
2782ev_child_start (EV_P_ ev_child *w) 4009ev_child_start (EV_P_ ev_child *w) EV_THROW
2783{ 4010{
2784#if EV_MULTIPLICITY 4011#if EV_MULTIPLICITY
2785 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4012 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2786#endif 4013#endif
2787 if (expect_false (ev_is_active (w))) 4014 if (expect_false (ev_is_active (w)))
2788 return; 4015 return;
2789 4016
2790 EV_FREQUENT_CHECK; 4017 EV_FREQUENT_CHECK;
2791 4018
2792 ev_start (EV_A_ (W)w, 1); 4019 ev_start (EV_A_ (W)w, 1);
2793 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4020 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2794 4021
2795 EV_FREQUENT_CHECK; 4022 EV_FREQUENT_CHECK;
2796} 4023}
2797 4024
2798void 4025void
2799ev_child_stop (EV_P_ ev_child *w) 4026ev_child_stop (EV_P_ ev_child *w) EV_THROW
2800{ 4027{
2801 clear_pending (EV_A_ (W)w); 4028 clear_pending (EV_A_ (W)w);
2802 if (expect_false (!ev_is_active (w))) 4029 if (expect_false (!ev_is_active (w)))
2803 return; 4030 return;
2804 4031
2805 EV_FREQUENT_CHECK; 4032 EV_FREQUENT_CHECK;
2806 4033
2807 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4034 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2808 ev_stop (EV_A_ (W)w); 4035 ev_stop (EV_A_ (W)w);
2809 4036
2810 EV_FREQUENT_CHECK; 4037 EV_FREQUENT_CHECK;
2811} 4038}
4039
4040#endif
2812 4041
2813#if EV_STAT_ENABLE 4042#if EV_STAT_ENABLE
2814 4043
2815# ifdef _WIN32 4044# ifdef _WIN32
2816# undef lstat 4045# undef lstat
… …
2822#define MIN_STAT_INTERVAL 0.1074891 4051#define MIN_STAT_INTERVAL 0.1074891
2823 4052
2824static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4053static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2825 4054
2826#if EV_USE_INOTIFY 4055#if EV_USE_INOTIFY
2827# define EV_INOTIFY_BUFSIZE 8192 4056
4057/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4058# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2828 4059
2829static void noinline 4060static void noinline
2830infy_add (EV_P_ ev_stat *w) 4061infy_add (EV_P_ ev_stat *w)
2831{ 4062{
2832 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); 4063 w->wd = inotify_add_watch (fs_fd, w->path,
4064 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4065 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4066 | IN_DONT_FOLLOW | IN_MASK_ADD);
2833 4067
2834 if (w->wd < 0) 4068 if (w->wd >= 0)
4069 {
4070 struct statfs sfs;
4071
4072 /* now local changes will be tracked by inotify, but remote changes won't */
4073 /* unless the filesystem is known to be local, we therefore still poll */
4074 /* also do poll on <2.6.25, but with normal frequency */
4075
4076 if (!fs_2625)
4077 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4078 else if (!statfs (w->path, &sfs)
4079 && (sfs.f_type == 0x1373 /* devfs */
4080 || sfs.f_type == 0x4006 /* fat */
4081 || sfs.f_type == 0x4d44 /* msdos */
4082 || sfs.f_type == 0xEF53 /* ext2/3 */
4083 || sfs.f_type == 0x72b6 /* jffs2 */
4084 || sfs.f_type == 0x858458f6 /* ramfs */
4085 || sfs.f_type == 0x5346544e /* ntfs */
4086 || sfs.f_type == 0x3153464a /* jfs */
4087 || sfs.f_type == 0x9123683e /* btrfs */
4088 || sfs.f_type == 0x52654973 /* reiser3 */
4089 || sfs.f_type == 0x01021994 /* tmpfs */
4090 || sfs.f_type == 0x58465342 /* xfs */))
4091 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4092 else
4093 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2835 { 4094 }
4095 else
4096 {
4097 /* can't use inotify, continue to stat */
2836 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4098 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2837 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2838 4099
2839 /* monitor some parent directory for speedup hints */ 4100 /* if path is not there, monitor some parent directory for speedup hints */
2840 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4101 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2841 /* but an efficiency issue only */ 4102 /* but an efficiency issue only */
2842 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4103 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2843 { 4104 {
2844 char path [4096]; 4105 char path [4096];
… …
2854 if (!pend || pend == path) 4115 if (!pend || pend == path)
2855 break; 4116 break;
2856 4117
2857 *pend = 0; 4118 *pend = 0;
2858 w->wd = inotify_add_watch (fs_fd, path, mask); 4119 w->wd = inotify_add_watch (fs_fd, path, mask);
2859 } 4120 }
2860 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4121 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2861 } 4122 }
2862 } 4123 }
2863 4124
2864 if (w->wd >= 0) 4125 if (w->wd >= 0)
2865 {
2866 struct statfs sfs;
2867
2868 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4126 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2869 4127
2870 /* now local changes will be tracked by inotify, but remote changes won't */ 4128 /* now re-arm timer, if required */
2871 /* unless the filesystem it known to be local, we therefore still poll */ 4129 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 /* also do poll on <2.6.25, but with normal frequency */
2873
2874 if (fs_2625 && !statfs (w->path, &sfs))
2875 if (sfs.f_type == 0x1373 /* devfs */
2876 || sfs.f_type == 0xEF53 /* ext2/3 */
2877 || sfs.f_type == 0x3153464a /* jfs */
2878 || sfs.f_type == 0x52654973 /* reiser3 */
2879 || sfs.f_type == 0x01021994 /* tempfs */
2880 || sfs.f_type == 0x58465342 /* xfs */)
2881 return;
2882
2883 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2884 ev_timer_again (EV_A_ &w->timer); 4130 ev_timer_again (EV_A_ &w->timer);
2885 } 4131 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2886} 4132}
2887 4133
2888static void noinline 4134static void noinline
2889infy_del (EV_P_ ev_stat *w) 4135infy_del (EV_P_ ev_stat *w)
2890{ 4136{
… …
2893 4139
2894 if (wd < 0) 4140 if (wd < 0)
2895 return; 4141 return;
2896 4142
2897 w->wd = -2; 4143 w->wd = -2;
2898 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4144 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2899 wlist_del (&fs_hash [slot].head, (WL)w); 4145 wlist_del (&fs_hash [slot].head, (WL)w);
2900 4146
2901 /* remove this watcher, if others are watching it, they will rearm */ 4147 /* remove this watcher, if others are watching it, they will rearm */
2902 inotify_rm_watch (fs_fd, wd); 4148 inotify_rm_watch (fs_fd, wd);
2903} 4149}
… …
2905static void noinline 4151static void noinline
2906infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4152infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2907{ 4153{
2908 if (slot < 0) 4154 if (slot < 0)
2909 /* overflow, need to check for all hash slots */ 4155 /* overflow, need to check for all hash slots */
2910 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4156 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2911 infy_wd (EV_A_ slot, wd, ev); 4157 infy_wd (EV_A_ slot, wd, ev);
2912 else 4158 else
2913 { 4159 {
2914 WL w_; 4160 WL w_;
2915 4161
2916 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4162 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2917 { 4163 {
2918 ev_stat *w = (ev_stat *)w_; 4164 ev_stat *w = (ev_stat *)w_;
2919 w_ = w_->next; /* lets us remove this watcher and all before it */ 4165 w_ = w_->next; /* lets us remove this watcher and all before it */
2920 4166
2921 if (w->wd == wd || wd == -1) 4167 if (w->wd == wd || wd == -1)
2922 { 4168 {
2923 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4169 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2924 { 4170 {
2925 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4171 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2926 w->wd = -1; 4172 w->wd = -1;
2927 infy_add (EV_A_ w); /* re-add, no matter what */ 4173 infy_add (EV_A_ w); /* re-add, no matter what */
2928 } 4174 }
2929 4175
2930 stat_timer_cb (EV_A_ &w->timer, 0); 4176 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2935 4181
2936static void 4182static void
2937infy_cb (EV_P_ ev_io *w, int revents) 4183infy_cb (EV_P_ ev_io *w, int revents)
2938{ 4184{
2939 char buf [EV_INOTIFY_BUFSIZE]; 4185 char buf [EV_INOTIFY_BUFSIZE];
2940 struct inotify_event *ev = (struct inotify_event *)buf;
2941 int ofs; 4186 int ofs;
2942 int len = read (fs_fd, buf, sizeof (buf)); 4187 int len = read (fs_fd, buf, sizeof (buf));
2943 4188
2944 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4189 for (ofs = 0; ofs < len; )
4190 {
4191 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2945 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4192 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4193 ofs += sizeof (struct inotify_event) + ev->len;
4194 }
2946} 4195}
2947 4196
2948inline_size void 4197inline_size void ecb_cold
2949check_2625 (EV_P) 4198ev_check_2625 (EV_P)
2950{ 4199{
2951 /* kernels < 2.6.25 are borked 4200 /* kernels < 2.6.25 are borked
2952 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4201 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2953 */ 4202 */
2954 struct utsname buf; 4203 if (ev_linux_version () < 0x020619)
2955 int major, minor, micro;
2956
2957 if (uname (&buf))
2958 return; 4204 return;
2959 4205
2960 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2961 return;
2962
2963 if (major < 2
2964 || (major == 2 && minor < 6)
2965 || (major == 2 && minor == 6 && micro < 25))
2966 return;
2967
2968 fs_2625 = 1; 4206 fs_2625 = 1;
4207}
4208
4209inline_size int
4210infy_newfd (void)
4211{
4212#if defined IN_CLOEXEC && defined IN_NONBLOCK
4213 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4214 if (fd >= 0)
4215 return fd;
4216#endif
4217 return inotify_init ();
2969} 4218}
2970 4219
2971inline_size void 4220inline_size void
2972infy_init (EV_P) 4221infy_init (EV_P)
2973{ 4222{
2974 if (fs_fd != -2) 4223 if (fs_fd != -2)
2975 return; 4224 return;
2976 4225
2977 fs_fd = -1; 4226 fs_fd = -1;
2978 4227
2979 check_2625 (EV_A); 4228 ev_check_2625 (EV_A);
2980 4229
2981 fs_fd = inotify_init (); 4230 fs_fd = infy_newfd ();
2982 4231
2983 if (fs_fd >= 0) 4232 if (fs_fd >= 0)
2984 { 4233 {
4234 fd_intern (fs_fd);
2985 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4235 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2986 ev_set_priority (&fs_w, EV_MAXPRI); 4236 ev_set_priority (&fs_w, EV_MAXPRI);
2987 ev_io_start (EV_A_ &fs_w); 4237 ev_io_start (EV_A_ &fs_w);
4238 ev_unref (EV_A);
2988 } 4239 }
2989} 4240}
2990 4241
2991inline_size void 4242inline_size void
2992infy_fork (EV_P) 4243infy_fork (EV_P)
… …
2994 int slot; 4245 int slot;
2995 4246
2996 if (fs_fd < 0) 4247 if (fs_fd < 0)
2997 return; 4248 return;
2998 4249
4250 ev_ref (EV_A);
4251 ev_io_stop (EV_A_ &fs_w);
2999 close (fs_fd); 4252 close (fs_fd);
3000 fs_fd = inotify_init (); 4253 fs_fd = infy_newfd ();
3001 4254
4255 if (fs_fd >= 0)
4256 {
4257 fd_intern (fs_fd);
4258 ev_io_set (&fs_w, fs_fd, EV_READ);
4259 ev_io_start (EV_A_ &fs_w);
4260 ev_unref (EV_A);
4261 }
4262
3002 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4263 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3003 { 4264 {
3004 WL w_ = fs_hash [slot].head; 4265 WL w_ = fs_hash [slot].head;
3005 fs_hash [slot].head = 0; 4266 fs_hash [slot].head = 0;
3006 4267
3007 while (w_) 4268 while (w_)
… …
3012 w->wd = -1; 4273 w->wd = -1;
3013 4274
3014 if (fs_fd >= 0) 4275 if (fs_fd >= 0)
3015 infy_add (EV_A_ w); /* re-add, no matter what */ 4276 infy_add (EV_A_ w); /* re-add, no matter what */
3016 else 4277 else
4278 {
4279 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4280 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3017 ev_timer_again (EV_A_ &w->timer); 4281 ev_timer_again (EV_A_ &w->timer);
4282 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4283 }
3018 } 4284 }
3019 } 4285 }
3020} 4286}
3021 4287
3022#endif 4288#endif
… …
3026#else 4292#else
3027# define EV_LSTAT(p,b) lstat (p, b) 4293# define EV_LSTAT(p,b) lstat (p, b)
3028#endif 4294#endif
3029 4295
3030void 4296void
3031ev_stat_stat (EV_P_ ev_stat *w) 4297ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3032{ 4298{
3033 if (lstat (w->path, &w->attr) < 0) 4299 if (lstat (w->path, &w->attr) < 0)
3034 w->attr.st_nlink = 0; 4300 w->attr.st_nlink = 0;
3035 else if (!w->attr.st_nlink) 4301 else if (!w->attr.st_nlink)
3036 w->attr.st_nlink = 1; 4302 w->attr.st_nlink = 1;
… …
3039static void noinline 4305static void noinline
3040stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4306stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3041{ 4307{
3042 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4308 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3043 4309
3044 /* we copy this here each the time so that */ 4310 ev_statdata prev = w->attr;
3045 /* prev has the old value when the callback gets invoked */
3046 w->prev = w->attr;
3047 ev_stat_stat (EV_A_ w); 4311 ev_stat_stat (EV_A_ w);
3048 4312
3049 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4313 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3050 if ( 4314 if (
3051 w->prev.st_dev != w->attr.st_dev 4315 prev.st_dev != w->attr.st_dev
3052 || w->prev.st_ino != w->attr.st_ino 4316 || prev.st_ino != w->attr.st_ino
3053 || w->prev.st_mode != w->attr.st_mode 4317 || prev.st_mode != w->attr.st_mode
3054 || w->prev.st_nlink != w->attr.st_nlink 4318 || prev.st_nlink != w->attr.st_nlink
3055 || w->prev.st_uid != w->attr.st_uid 4319 || prev.st_uid != w->attr.st_uid
3056 || w->prev.st_gid != w->attr.st_gid 4320 || prev.st_gid != w->attr.st_gid
3057 || w->prev.st_rdev != w->attr.st_rdev 4321 || prev.st_rdev != w->attr.st_rdev
3058 || w->prev.st_size != w->attr.st_size 4322 || prev.st_size != w->attr.st_size
3059 || w->prev.st_atime != w->attr.st_atime 4323 || prev.st_atime != w->attr.st_atime
3060 || w->prev.st_mtime != w->attr.st_mtime 4324 || prev.st_mtime != w->attr.st_mtime
3061 || w->prev.st_ctime != w->attr.st_ctime 4325 || prev.st_ctime != w->attr.st_ctime
3062 ) { 4326 ) {
4327 /* we only update w->prev on actual differences */
4328 /* in case we test more often than invoke the callback, */
4329 /* to ensure that prev is always different to attr */
4330 w->prev = prev;
4331
3063 #if EV_USE_INOTIFY 4332 #if EV_USE_INOTIFY
3064 if (fs_fd >= 0) 4333 if (fs_fd >= 0)
3065 { 4334 {
3066 infy_del (EV_A_ w); 4335 infy_del (EV_A_ w);
3067 infy_add (EV_A_ w); 4336 infy_add (EV_A_ w);
… …
3072 ev_feed_event (EV_A_ w, EV_STAT); 4341 ev_feed_event (EV_A_ w, EV_STAT);
3073 } 4342 }
3074} 4343}
3075 4344
3076void 4345void
3077ev_stat_start (EV_P_ ev_stat *w) 4346ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3078{ 4347{
3079 if (expect_false (ev_is_active (w))) 4348 if (expect_false (ev_is_active (w)))
3080 return; 4349 return;
3081 4350
3082 ev_stat_stat (EV_A_ w); 4351 ev_stat_stat (EV_A_ w);
… …
3092 4361
3093 if (fs_fd >= 0) 4362 if (fs_fd >= 0)
3094 infy_add (EV_A_ w); 4363 infy_add (EV_A_ w);
3095 else 4364 else
3096#endif 4365#endif
4366 {
3097 ev_timer_again (EV_A_ &w->timer); 4367 ev_timer_again (EV_A_ &w->timer);
4368 ev_unref (EV_A);
4369 }
3098 4370
3099 ev_start (EV_A_ (W)w, 1); 4371 ev_start (EV_A_ (W)w, 1);
3100 4372
3101 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3102} 4374}
3103 4375
3104void 4376void
3105ev_stat_stop (EV_P_ ev_stat *w) 4377ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3106{ 4378{
3107 clear_pending (EV_A_ (W)w); 4379 clear_pending (EV_A_ (W)w);
3108 if (expect_false (!ev_is_active (w))) 4380 if (expect_false (!ev_is_active (w)))
3109 return; 4381 return;
3110 4382
3111 EV_FREQUENT_CHECK; 4383 EV_FREQUENT_CHECK;
3112 4384
3113#if EV_USE_INOTIFY 4385#if EV_USE_INOTIFY
3114 infy_del (EV_A_ w); 4386 infy_del (EV_A_ w);
3115#endif 4387#endif
4388
4389 if (ev_is_active (&w->timer))
4390 {
4391 ev_ref (EV_A);
3116 ev_timer_stop (EV_A_ &w->timer); 4392 ev_timer_stop (EV_A_ &w->timer);
4393 }
3117 4394
3118 ev_stop (EV_A_ (W)w); 4395 ev_stop (EV_A_ (W)w);
3119 4396
3120 EV_FREQUENT_CHECK; 4397 EV_FREQUENT_CHECK;
3121} 4398}
3122#endif 4399#endif
3123 4400
3124#if EV_IDLE_ENABLE 4401#if EV_IDLE_ENABLE
3125void 4402void
3126ev_idle_start (EV_P_ ev_idle *w) 4403ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3127{ 4404{
3128 if (expect_false (ev_is_active (w))) 4405 if (expect_false (ev_is_active (w)))
3129 return; 4406 return;
3130 4407
3131 pri_adjust (EV_A_ (W)w); 4408 pri_adjust (EV_A_ (W)w);
… …
3144 4421
3145 EV_FREQUENT_CHECK; 4422 EV_FREQUENT_CHECK;
3146} 4423}
3147 4424
3148void 4425void
3149ev_idle_stop (EV_P_ ev_idle *w) 4426ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3150{ 4427{
3151 clear_pending (EV_A_ (W)w); 4428 clear_pending (EV_A_ (W)w);
3152 if (expect_false (!ev_is_active (w))) 4429 if (expect_false (!ev_is_active (w)))
3153 return; 4430 return;
3154 4431
… …
3166 4443
3167 EV_FREQUENT_CHECK; 4444 EV_FREQUENT_CHECK;
3168} 4445}
3169#endif 4446#endif
3170 4447
4448#if EV_PREPARE_ENABLE
3171void 4449void
3172ev_prepare_start (EV_P_ ev_prepare *w) 4450ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3173{ 4451{
3174 if (expect_false (ev_is_active (w))) 4452 if (expect_false (ev_is_active (w)))
3175 return; 4453 return;
3176 4454
3177 EV_FREQUENT_CHECK; 4455 EV_FREQUENT_CHECK;
… …
3182 4460
3183 EV_FREQUENT_CHECK; 4461 EV_FREQUENT_CHECK;
3184} 4462}
3185 4463
3186void 4464void
3187ev_prepare_stop (EV_P_ ev_prepare *w) 4465ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3188{ 4466{
3189 clear_pending (EV_A_ (W)w); 4467 clear_pending (EV_A_ (W)w);
3190 if (expect_false (!ev_is_active (w))) 4468 if (expect_false (!ev_is_active (w)))
3191 return; 4469 return;
3192 4470
… …
3201 4479
3202 ev_stop (EV_A_ (W)w); 4480 ev_stop (EV_A_ (W)w);
3203 4481
3204 EV_FREQUENT_CHECK; 4482 EV_FREQUENT_CHECK;
3205} 4483}
4484#endif
3206 4485
4486#if EV_CHECK_ENABLE
3207void 4487void
3208ev_check_start (EV_P_ ev_check *w) 4488ev_check_start (EV_P_ ev_check *w) EV_THROW
3209{ 4489{
3210 if (expect_false (ev_is_active (w))) 4490 if (expect_false (ev_is_active (w)))
3211 return; 4491 return;
3212 4492
3213 EV_FREQUENT_CHECK; 4493 EV_FREQUENT_CHECK;
… …
3218 4498
3219 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
3220} 4500}
3221 4501
3222void 4502void
3223ev_check_stop (EV_P_ ev_check *w) 4503ev_check_stop (EV_P_ ev_check *w) EV_THROW
3224{ 4504{
3225 clear_pending (EV_A_ (W)w); 4505 clear_pending (EV_A_ (W)w);
3226 if (expect_false (!ev_is_active (w))) 4506 if (expect_false (!ev_is_active (w)))
3227 return; 4507 return;
3228 4508
… …
3237 4517
3238 ev_stop (EV_A_ (W)w); 4518 ev_stop (EV_A_ (W)w);
3239 4519
3240 EV_FREQUENT_CHECK; 4520 EV_FREQUENT_CHECK;
3241} 4521}
4522#endif
3242 4523
3243#if EV_EMBED_ENABLE 4524#if EV_EMBED_ENABLE
3244void noinline 4525void noinline
3245ev_embed_sweep (EV_P_ ev_embed *w) 4526ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3246{ 4527{
3247 ev_loop (w->other, EVLOOP_NONBLOCK); 4528 ev_run (w->other, EVRUN_NOWAIT);
3248} 4529}
3249 4530
3250static void 4531static void
3251embed_io_cb (EV_P_ ev_io *io, int revents) 4532embed_io_cb (EV_P_ ev_io *io, int revents)
3252{ 4533{
3253 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4534 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3254 4535
3255 if (ev_cb (w)) 4536 if (ev_cb (w))
3256 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4537 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3257 else 4538 else
3258 ev_loop (w->other, EVLOOP_NONBLOCK); 4539 ev_run (w->other, EVRUN_NOWAIT);
3259} 4540}
3260 4541
3261static void 4542static void
3262embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4543embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3263{ 4544{
… …
3267 EV_P = w->other; 4548 EV_P = w->other;
3268 4549
3269 while (fdchangecnt) 4550 while (fdchangecnt)
3270 { 4551 {
3271 fd_reify (EV_A); 4552 fd_reify (EV_A);
3272 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4553 ev_run (EV_A_ EVRUN_NOWAIT);
3273 } 4554 }
3274 } 4555 }
3275} 4556}
3276 4557
3277static void 4558static void
… …
3283 4564
3284 { 4565 {
3285 EV_P = w->other; 4566 EV_P = w->other;
3286 4567
3287 ev_loop_fork (EV_A); 4568 ev_loop_fork (EV_A);
3288 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4569 ev_run (EV_A_ EVRUN_NOWAIT);
3289 } 4570 }
3290 4571
3291 ev_embed_start (EV_A_ w); 4572 ev_embed_start (EV_A_ w);
3292} 4573}
3293 4574
… …
3298 ev_idle_stop (EV_A_ idle); 4579 ev_idle_stop (EV_A_ idle);
3299} 4580}
3300#endif 4581#endif
3301 4582
3302void 4583void
3303ev_embed_start (EV_P_ ev_embed *w) 4584ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3304{ 4585{
3305 if (expect_false (ev_is_active (w))) 4586 if (expect_false (ev_is_active (w)))
3306 return; 4587 return;
3307 4588
3308 { 4589 {
… …
3329 4610
3330 EV_FREQUENT_CHECK; 4611 EV_FREQUENT_CHECK;
3331} 4612}
3332 4613
3333void 4614void
3334ev_embed_stop (EV_P_ ev_embed *w) 4615ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3335{ 4616{
3336 clear_pending (EV_A_ (W)w); 4617 clear_pending (EV_A_ (W)w);
3337 if (expect_false (!ev_is_active (w))) 4618 if (expect_false (!ev_is_active (w)))
3338 return; 4619 return;
3339 4620
… …
3341 4622
3342 ev_io_stop (EV_A_ &w->io); 4623 ev_io_stop (EV_A_ &w->io);
3343 ev_prepare_stop (EV_A_ &w->prepare); 4624 ev_prepare_stop (EV_A_ &w->prepare);
3344 ev_fork_stop (EV_A_ &w->fork); 4625 ev_fork_stop (EV_A_ &w->fork);
3345 4626
4627 ev_stop (EV_A_ (W)w);
4628
3346 EV_FREQUENT_CHECK; 4629 EV_FREQUENT_CHECK;
3347} 4630}
3348#endif 4631#endif
3349 4632
3350#if EV_FORK_ENABLE 4633#if EV_FORK_ENABLE
3351void 4634void
3352ev_fork_start (EV_P_ ev_fork *w) 4635ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3353{ 4636{
3354 if (expect_false (ev_is_active (w))) 4637 if (expect_false (ev_is_active (w)))
3355 return; 4638 return;
3356 4639
3357 EV_FREQUENT_CHECK; 4640 EV_FREQUENT_CHECK;
… …
3362 4645
3363 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3364} 4647}
3365 4648
3366void 4649void
3367ev_fork_stop (EV_P_ ev_fork *w) 4650ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3368{ 4651{
3369 clear_pending (EV_A_ (W)w); 4652 clear_pending (EV_A_ (W)w);
3370 if (expect_false (!ev_is_active (w))) 4653 if (expect_false (!ev_is_active (w)))
3371 return; 4654 return;
3372 4655
… …
3383 4666
3384 EV_FREQUENT_CHECK; 4667 EV_FREQUENT_CHECK;
3385} 4668}
3386#endif 4669#endif
3387 4670
4671#if EV_CLEANUP_ENABLE
4672void
4673ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4674{
4675 if (expect_false (ev_is_active (w)))
4676 return;
4677
4678 EV_FREQUENT_CHECK;
4679
4680 ev_start (EV_A_ (W)w, ++cleanupcnt);
4681 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4682 cleanups [cleanupcnt - 1] = w;
4683
4684 /* cleanup watchers should never keep a refcount on the loop */
4685 ev_unref (EV_A);
4686 EV_FREQUENT_CHECK;
4687}
4688
4689void
4690ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4691{
4692 clear_pending (EV_A_ (W)w);
4693 if (expect_false (!ev_is_active (w)))
4694 return;
4695
4696 EV_FREQUENT_CHECK;
4697 ev_ref (EV_A);
4698
4699 {
4700 int active = ev_active (w);
4701
4702 cleanups [active - 1] = cleanups [--cleanupcnt];
4703 ev_active (cleanups [active - 1]) = active;
4704 }
4705
4706 ev_stop (EV_A_ (W)w);
4707
4708 EV_FREQUENT_CHECK;
4709}
4710#endif
4711
3388#if EV_ASYNC_ENABLE 4712#if EV_ASYNC_ENABLE
3389void 4713void
3390ev_async_start (EV_P_ ev_async *w) 4714ev_async_start (EV_P_ ev_async *w) EV_THROW
3391{ 4715{
3392 if (expect_false (ev_is_active (w))) 4716 if (expect_false (ev_is_active (w)))
3393 return; 4717 return;
4718
4719 w->sent = 0;
3394 4720
3395 evpipe_init (EV_A); 4721 evpipe_init (EV_A);
3396 4722
3397 EV_FREQUENT_CHECK; 4723 EV_FREQUENT_CHECK;
3398 4724
… …
3402 4728
3403 EV_FREQUENT_CHECK; 4729 EV_FREQUENT_CHECK;
3404} 4730}
3405 4731
3406void 4732void
3407ev_async_stop (EV_P_ ev_async *w) 4733ev_async_stop (EV_P_ ev_async *w) EV_THROW
3408{ 4734{
3409 clear_pending (EV_A_ (W)w); 4735 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 4736 if (expect_false (!ev_is_active (w)))
3411 return; 4737 return;
3412 4738
… …
3423 4749
3424 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
3425} 4751}
3426 4752
3427void 4753void
3428ev_async_send (EV_P_ ev_async *w) 4754ev_async_send (EV_P_ ev_async *w) EV_THROW
3429{ 4755{
3430 w->sent = 1; 4756 w->sent = 1;
3431 evpipe_write (EV_A_ &async_pending); 4757 evpipe_write (EV_A_ &async_pending);
3432} 4758}
3433#endif 4759#endif
… …
3470 4796
3471 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4797 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3472} 4798}
3473 4799
3474void 4800void
3475ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4801ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3476{ 4802{
3477 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4803 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3478 4804
3479 if (expect_false (!once)) 4805 if (expect_false (!once))
3480 { 4806 {
3481 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4807 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3482 return; 4808 return;
3483 } 4809 }
3484 4810
3485 once->cb = cb; 4811 once->cb = cb;
3486 once->arg = arg; 4812 once->arg = arg;
… …
3501} 4827}
3502 4828
3503/*****************************************************************************/ 4829/*****************************************************************************/
3504 4830
3505#if EV_WALK_ENABLE 4831#if EV_WALK_ENABLE
3506void 4832void ecb_cold
3507ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4833ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3508{ 4834{
3509 int i, j; 4835 int i, j;
3510 ev_watcher_list *wl, *wn; 4836 ev_watcher_list *wl, *wn;
3511 4837
3512 if (types & (EV_IO | EV_EMBED)) 4838 if (types & (EV_IO | EV_EMBED))
… …
3555 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4881 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3556#endif 4882#endif
3557 4883
3558#if EV_IDLE_ENABLE 4884#if EV_IDLE_ENABLE
3559 if (types & EV_IDLE) 4885 if (types & EV_IDLE)
3560 for (j = NUMPRI; i--; ) 4886 for (j = NUMPRI; j--; )
3561 for (i = idlecnt [j]; i--; ) 4887 for (i = idlecnt [j]; i--; )
3562 cb (EV_A_ EV_IDLE, idles [j][i]); 4888 cb (EV_A_ EV_IDLE, idles [j][i]);
3563#endif 4889#endif
3564 4890
3565#if EV_FORK_ENABLE 4891#if EV_FORK_ENABLE
… …
3573 if (types & EV_ASYNC) 4899 if (types & EV_ASYNC)
3574 for (i = asynccnt; i--; ) 4900 for (i = asynccnt; i--; )
3575 cb (EV_A_ EV_ASYNC, asyncs [i]); 4901 cb (EV_A_ EV_ASYNC, asyncs [i]);
3576#endif 4902#endif
3577 4903
4904#if EV_PREPARE_ENABLE
3578 if (types & EV_PREPARE) 4905 if (types & EV_PREPARE)
3579 for (i = preparecnt; i--; ) 4906 for (i = preparecnt; i--; )
3580#if EV_EMBED_ENABLE 4907# if EV_EMBED_ENABLE
3581 if (ev_cb (prepares [i]) != embed_prepare_cb) 4908 if (ev_cb (prepares [i]) != embed_prepare_cb)
3582#endif 4909# endif
3583 cb (EV_A_ EV_PREPARE, prepares [i]); 4910 cb (EV_A_ EV_PREPARE, prepares [i]);
4911#endif
3584 4912
4913#if EV_CHECK_ENABLE
3585 if (types & EV_CHECK) 4914 if (types & EV_CHECK)
3586 for (i = checkcnt; i--; ) 4915 for (i = checkcnt; i--; )
3587 cb (EV_A_ EV_CHECK, checks [i]); 4916 cb (EV_A_ EV_CHECK, checks [i]);
4917#endif
3588 4918
4919#if EV_SIGNAL_ENABLE
3589 if (types & EV_SIGNAL) 4920 if (types & EV_SIGNAL)
3590 for (i = 0; i < EV_NSIG - 1; ++i) 4921 for (i = 0; i < EV_NSIG - 1; ++i)
3591 for (wl = signals [i].head; wl; ) 4922 for (wl = signals [i].head; wl; )
3592 { 4923 {
3593 wn = wl->next; 4924 wn = wl->next;
3594 cb (EV_A_ EV_SIGNAL, wl); 4925 cb (EV_A_ EV_SIGNAL, wl);
3595 wl = wn; 4926 wl = wn;
3596 } 4927 }
4928#endif
3597 4929
4930#if EV_CHILD_ENABLE
3598 if (types & EV_CHILD) 4931 if (types & EV_CHILD)
3599 for (i = EV_PID_HASHSIZE; i--; ) 4932 for (i = (EV_PID_HASHSIZE); i--; )
3600 for (wl = childs [i]; wl; ) 4933 for (wl = childs [i]; wl; )
3601 { 4934 {
3602 wn = wl->next; 4935 wn = wl->next;
3603 cb (EV_A_ EV_CHILD, wl); 4936 cb (EV_A_ EV_CHILD, wl);
3604 wl = wn; 4937 wl = wn;
3605 } 4938 }
4939#endif
3606/* EV_STAT 0x00001000 /* stat data changed */ 4940/* EV_STAT 0x00001000 /* stat data changed */
3607/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4941/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3608} 4942}
3609#endif 4943#endif
3610 4944
3611#if EV_MULTIPLICITY 4945#if EV_MULTIPLICITY
3612 #include "ev_wrap.h" 4946 #include "ev_wrap.h"
3613#endif 4947#endif
3614 4948
3615#ifdef __cplusplus
3616}
3617#endif
3618

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