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Comparing libev/ev.c (file contents):
Revision 1.313 by root, Wed Aug 19 23:44:51 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? */
… …
480 1413
481#ifndef EV_FD_TO_WIN32_HANDLE 1414#ifndef EV_FD_TO_WIN32_HANDLE
482# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 1415# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
483#endif 1416#endif
484#ifndef EV_WIN32_HANDLE_TO_FD 1417#ifndef EV_WIN32_HANDLE_TO_FD
485# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1418# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
486#endif 1419#endif
487#ifndef EV_WIN32_CLOSE_FD 1420#ifndef EV_WIN32_CLOSE_FD
488# define EV_WIN32_CLOSE_FD(fd) close (fd) 1421# define EV_WIN32_CLOSE_FD(fd) close (fd)
489#endif 1422#endif
490 1423
… …
492# include "ev_win32.c" 1425# include "ev_win32.c"
493#endif 1426#endif
494 1427
495/*****************************************************************************/ 1428/*****************************************************************************/
496 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
497static void (*syserr_cb)(const char *msg); 1528static void (*syserr_cb)(const char *msg) EV_THROW;
498 1529
499void 1530void ecb_cold
500ev_set_syserr_cb (void (*cb)(const char *msg)) 1531ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
501{ 1532{
502 syserr_cb = cb; 1533 syserr_cb = cb;
503} 1534}
504 1535
505static void noinline 1536static void noinline ecb_cold
506ev_syserr (const char *msg) 1537ev_syserr (const char *msg)
507{ 1538{
508 if (!msg) 1539 if (!msg)
509 msg = "(libev) system error"; 1540 msg = "(libev) system error";
510 1541
511 if (syserr_cb) 1542 if (syserr_cb)
512 syserr_cb (msg); 1543 syserr_cb (msg);
513 else 1544 else
514 { 1545 {
1546#if EV_AVOID_STDIO
1547 ev_printerr (msg);
1548 ev_printerr (": ");
1549 ev_printerr (strerror (errno));
1550 ev_printerr ("\n");
1551#else
515 perror (msg); 1552 perror (msg);
1553#endif
516 abort (); 1554 abort ();
517 } 1555 }
518} 1556}
519 1557
520static void * 1558static void *
521ev_realloc_emul (void *ptr, long size) 1559ev_realloc_emul (void *ptr, long size) EV_THROW
522{ 1560{
523 /* some systems, notably openbsd and darwin, fail to properly 1561 /* some systems, notably openbsd and darwin, fail to properly
524 * 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
525 * 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.
526 */ 1566 */
527 1567
528 if (size) 1568 if (size)
529 return realloc (ptr, size); 1569 return realloc (ptr, size);
530 1570
531 free (ptr); 1571 free (ptr);
532 return 0; 1572 return 0;
533} 1573}
534 1574
535static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1575static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
536 1576
537void 1577void ecb_cold
538ev_set_allocator (void *(*cb)(void *ptr, long size)) 1578ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
539{ 1579{
540 alloc = cb; 1580 alloc = cb;
541} 1581}
542 1582
543inline_speed void * 1583inline_speed void *
… …
545{ 1585{
546 ptr = alloc (ptr, size); 1586 ptr = alloc (ptr, size);
547 1587
548 if (!ptr && size) 1588 if (!ptr && size)
549 { 1589 {
1590#if EV_AVOID_STDIO
1591 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1592#else
550 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1593 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1594#endif
551 abort (); 1595 abort ();
552 } 1596 }
553 1597
554 return ptr; 1598 return ptr;
555} 1599}
… …
571 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 */
572 unsigned char unused; 1616 unsigned char unused;
573#if EV_USE_EPOLL 1617#if EV_USE_EPOLL
574 unsigned int egen; /* generation counter to counter epoll bugs */ 1618 unsigned int egen; /* generation counter to counter epoll bugs */
575#endif 1619#endif
576#if EV_SELECT_IS_WINSOCKET 1620#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
577 SOCKET handle; 1621 SOCKET handle;
1622#endif
1623#if EV_USE_IOCP
1624 OVERLAPPED or, ow;
578#endif 1625#endif
579} ANFD; 1626} ANFD;
580 1627
581/* stores the pending event set for a given watcher */ 1628/* stores the pending event set for a given watcher */
582typedef struct 1629typedef struct
… …
624 #undef VAR 1671 #undef VAR
625 }; 1672 };
626 #include "ev_wrap.h" 1673 #include "ev_wrap.h"
627 1674
628 static struct ev_loop default_loop_struct; 1675 static struct ev_loop default_loop_struct;
629 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 */
630 1677
631#else 1678#else
632 1679
633 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 */
634 #define VAR(name,decl) static decl; 1681 #define VAR(name,decl) static decl;
635 #include "ev_vars.h" 1682 #include "ev_vars.h"
636 #undef VAR 1683 #undef VAR
637 1684
638 static int ev_default_loop_ptr; 1685 static int ev_default_loop_ptr;
639 1686
640#endif 1687#endif
641 1688
642#if EV_MINIMAL < 2 1689#if EV_FEATURE_API
643# 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)
644# 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)
645# define EV_INVOKE_PENDING invoke_cb (EV_A) 1692# define EV_INVOKE_PENDING invoke_cb (EV_A)
646#else 1693#else
647# define EV_RELEASE_CB (void)0 1694# define EV_RELEASE_CB (void)0
648# define EV_ACQUIRE_CB (void)0 1695# define EV_ACQUIRE_CB (void)0
649# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1696# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
650#endif 1697#endif
651 1698
652#define EVUNLOOP_RECURSE 0x80 1699#define EVBREAK_RECURSE 0x80
653 1700
654/*****************************************************************************/ 1701/*****************************************************************************/
655 1702
656#ifndef EV_HAVE_EV_TIME 1703#ifndef EV_HAVE_EV_TIME
657ev_tstamp 1704ev_tstamp
658ev_time (void) 1705ev_time (void) EV_THROW
659{ 1706{
660#if EV_USE_REALTIME 1707#if EV_USE_REALTIME
661 if (expect_true (have_realtime)) 1708 if (expect_true (have_realtime))
662 { 1709 {
663 struct timespec ts; 1710 struct timespec ts;
… …
687 return ev_time (); 1734 return ev_time ();
688} 1735}
689 1736
690#if EV_MULTIPLICITY 1737#if EV_MULTIPLICITY
691ev_tstamp 1738ev_tstamp
692ev_now (EV_P) 1739ev_now (EV_P) EV_THROW
693{ 1740{
694 return ev_rt_now; 1741 return ev_rt_now;
695} 1742}
696#endif 1743#endif
697 1744
698void 1745void
699ev_sleep (ev_tstamp delay) 1746ev_sleep (ev_tstamp delay) EV_THROW
700{ 1747{
701 if (delay > 0.) 1748 if (delay > 0.)
702 { 1749 {
703#if EV_USE_NANOSLEEP 1750#if EV_USE_NANOSLEEP
704 struct timespec ts; 1751 struct timespec ts;
705 1752
706 ts.tv_sec = (time_t)delay; 1753 EV_TS_SET (ts, delay);
707 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
708
709 nanosleep (&ts, 0); 1754 nanosleep (&ts, 0);
710#elif defined(_WIN32) 1755#elif defined _WIN32
711 Sleep ((unsigned long)(delay * 1e3)); 1756 Sleep ((unsigned long)(delay * 1e3));
712#else 1757#else
713 struct timeval tv; 1758 struct timeval tv;
714 1759
715 tv.tv_sec = (time_t)delay;
716 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
717
718 /* 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 */
719 /* something not guaranteed by newer posix versions, but guaranteed */ 1761 /* something not guaranteed by newer posix versions, but guaranteed */
720 /* by older ones */ 1762 /* by older ones */
1763 EV_TV_SET (tv, delay);
721 select (0, 0, 0, 0, &tv); 1764 select (0, 0, 0, 0, &tv);
722#endif 1765#endif
723 } 1766 }
724} 1767}
725 1768
726/*****************************************************************************/ 1769/*****************************************************************************/
727 1770
728#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 */
729 1772
730/* find a suitable new size for the given array, */ 1773/* find a suitable new size for the given array, */
731/* hopefully by rounding to a ncie-to-malloc size */ 1774/* hopefully by rounding to a nice-to-malloc size */
732inline_size int 1775inline_size int
733array_nextsize (int elem, int cur, int cnt) 1776array_nextsize (int elem, int cur, int cnt)
734{ 1777{
735 int ncur = cur + 1; 1778 int ncur = cur + 1;
736 1779
737 do 1780 do
738 ncur <<= 1; 1781 ncur <<= 1;
739 while (cnt > ncur); 1782 while (cnt > ncur);
740 1783
741 /* 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 */
742 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1785 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
743 { 1786 {
744 ncur *= elem; 1787 ncur *= elem;
745 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);
746 ncur = ncur - sizeof (void *) * 4; 1789 ncur = ncur - sizeof (void *) * 4;
… …
748 } 1791 }
749 1792
750 return ncur; 1793 return ncur;
751} 1794}
752 1795
753static noinline void * 1796static void * noinline ecb_cold
754array_realloc (int elem, void *base, int *cur, int cnt) 1797array_realloc (int elem, void *base, int *cur, int cnt)
755{ 1798{
756 *cur = array_nextsize (elem, *cur, cnt); 1799 *cur = array_nextsize (elem, *cur, cnt);
757 return ev_realloc (base, elem * *cur); 1800 return ev_realloc (base, elem * *cur);
758} 1801}
… …
761 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1804 memset ((void *)(base), 0, sizeof (*(base)) * (count))
762 1805
763#define array_needsize(type,base,cur,cnt,init) \ 1806#define array_needsize(type,base,cur,cnt,init) \
764 if (expect_false ((cnt) > (cur))) \ 1807 if (expect_false ((cnt) > (cur))) \
765 { \ 1808 { \
766 int ocur_ = (cur); \ 1809 int ecb_unused ocur_ = (cur); \
767 (base) = (type *)array_realloc \ 1810 (base) = (type *)array_realloc \
768 (sizeof (type), (base), &(cur), (cnt)); \ 1811 (sizeof (type), (base), &(cur), (cnt)); \
769 init ((base) + (ocur_), (cur) - ocur_); \ 1812 init ((base) + (ocur_), (cur) - ocur_); \
770 } 1813 }
771 1814
… …
789pendingcb (EV_P_ ev_prepare *w, int revents) 1832pendingcb (EV_P_ ev_prepare *w, int revents)
790{ 1833{
791} 1834}
792 1835
793void noinline 1836void noinline
794ev_feed_event (EV_P_ void *w, int revents) 1837ev_feed_event (EV_P_ void *w, int revents) EV_THROW
795{ 1838{
796 W w_ = (W)w; 1839 W w_ = (W)w;
797 int pri = ABSPRI (w_); 1840 int pri = ABSPRI (w_);
798 1841
799 if (expect_false (w_->pending)) 1842 if (expect_false (w_->pending))
… …
803 w_->pending = ++pendingcnt [pri]; 1846 w_->pending = ++pendingcnt [pri];
804 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1847 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
805 pendings [pri][w_->pending - 1].w = w_; 1848 pendings [pri][w_->pending - 1].w = w_;
806 pendings [pri][w_->pending - 1].events = revents; 1849 pendings [pri][w_->pending - 1].events = revents;
807 } 1850 }
1851
1852 pendingpri = NUMPRI - 1;
808} 1853}
809 1854
810inline_speed void 1855inline_speed void
811feed_reverse (EV_P_ W w) 1856feed_reverse (EV_P_ W w)
812{ 1857{
… …
832} 1877}
833 1878
834/*****************************************************************************/ 1879/*****************************************************************************/
835 1880
836inline_speed void 1881inline_speed void
837fd_event_nc (EV_P_ int fd, int revents) 1882fd_event_nocheck (EV_P_ int fd, int revents)
838{ 1883{
839 ANFD *anfd = anfds + fd; 1884 ANFD *anfd = anfds + fd;
840 ev_io *w; 1885 ev_io *w;
841 1886
842 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)
… …
854fd_event (EV_P_ int fd, int revents) 1899fd_event (EV_P_ int fd, int revents)
855{ 1900{
856 ANFD *anfd = anfds + fd; 1901 ANFD *anfd = anfds + fd;
857 1902
858 if (expect_true (!anfd->reify)) 1903 if (expect_true (!anfd->reify))
859 fd_event_nc (EV_A_ fd, revents); 1904 fd_event_nocheck (EV_A_ fd, revents);
860} 1905}
861 1906
862void 1907void
863ev_feed_fd_event (EV_P_ int fd, int revents) 1908ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
864{ 1909{
865 if (fd >= 0 && fd < anfdmax) 1910 if (fd >= 0 && fd < anfdmax)
866 fd_event_nc (EV_A_ fd, revents); 1911 fd_event_nocheck (EV_A_ fd, revents);
867} 1912}
868 1913
869/* make sure the external fd watch events are in-sync */ 1914/* make sure the external fd watch events are in-sync */
870/* with the kernel/libev internal state */ 1915/* with the kernel/libev internal state */
871inline_size void 1916inline_size void
872fd_reify (EV_P) 1917fd_reify (EV_P)
873{ 1918{
874 int i; 1919 int i;
875 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
876 for (i = 0; i < fdchangecnt; ++i) 1946 for (i = 0; i < fdchangecnt; ++i)
877 { 1947 {
878 int fd = fdchanges [i]; 1948 int fd = fdchanges [i];
879 ANFD *anfd = anfds + fd; 1949 ANFD *anfd = anfds + fd;
880 ev_io *w; 1950 ev_io *w;
881 1951
882 unsigned char events = 0; 1952 unsigned char o_events = anfd->events;
1953 unsigned char o_reify = anfd->reify;
883 1954
884 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1955 anfd->reify = 0;
885 events |= (unsigned char)w->events;
886 1956
887#if EV_SELECT_IS_WINSOCKET 1957 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
888 if (events)
889 { 1958 {
890 unsigned long arg; 1959 anfd->events = 0;
891 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1960
892 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1961 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1962 anfd->events |= (unsigned char)w->events;
1963
1964 if (o_events != anfd->events)
1965 o_reify = EV__IOFDSET; /* actually |= */
893 } 1966 }
894#endif
895 1967
896 { 1968 if (o_reify & EV__IOFDSET)
897 unsigned char o_events = anfd->events;
898 unsigned char o_reify = anfd->reify;
899
900 anfd->reify = 0;
901 anfd->events = events;
902
903 if (o_events != events || o_reify & EV__IOFDSET)
904 backend_modify (EV_A_ fd, o_events, events); 1969 backend_modify (EV_A_ fd, o_events, anfd->events);
905 }
906 } 1970 }
907 1971
908 fdchangecnt = 0; 1972 fdchangecnt = 0;
909} 1973}
910 1974
… …
922 fdchanges [fdchangecnt - 1] = fd; 1986 fdchanges [fdchangecnt - 1] = fd;
923 } 1987 }
924} 1988}
925 1989
926/* 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 */
927inline_speed void 1991inline_speed void ecb_cold
928fd_kill (EV_P_ int fd) 1992fd_kill (EV_P_ int fd)
929{ 1993{
930 ev_io *w; 1994 ev_io *w;
931 1995
932 while ((w = (ev_io *)anfds [fd].head)) 1996 while ((w = (ev_io *)anfds [fd].head))
… …
934 ev_io_stop (EV_A_ w); 1998 ev_io_stop (EV_A_ w);
935 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);
936 } 2000 }
937} 2001}
938 2002
939/* check whether the given fd is atcually valid, for error recovery */ 2003/* check whether the given fd is actually valid, for error recovery */
940inline_size int 2004inline_size int ecb_cold
941fd_valid (int fd) 2005fd_valid (int fd)
942{ 2006{
943#ifdef _WIN32 2007#ifdef _WIN32
944 return _get_osfhandle (fd) != -1; 2008 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
945#else 2009#else
946 return fcntl (fd, F_GETFD) != -1; 2010 return fcntl (fd, F_GETFD) != -1;
947#endif 2011#endif
948} 2012}
949 2013
950/* called on EBADF to verify fds */ 2014/* called on EBADF to verify fds */
951static void noinline 2015static void noinline ecb_cold
952fd_ebadf (EV_P) 2016fd_ebadf (EV_P)
953{ 2017{
954 int fd; 2018 int fd;
955 2019
956 for (fd = 0; fd < anfdmax; ++fd) 2020 for (fd = 0; fd < anfdmax; ++fd)
… …
958 if (!fd_valid (fd) && errno == EBADF) 2022 if (!fd_valid (fd) && errno == EBADF)
959 fd_kill (EV_A_ fd); 2023 fd_kill (EV_A_ fd);
960} 2024}
961 2025
962/* 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 */
963static void noinline 2027static void noinline ecb_cold
964fd_enomem (EV_P) 2028fd_enomem (EV_P)
965{ 2029{
966 int fd; 2030 int fd;
967 2031
968 for (fd = anfdmax; fd--; ) 2032 for (fd = anfdmax; fd--; )
… …
986 anfds [fd].emask = 0; 2050 anfds [fd].emask = 0;
987 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2051 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
988 } 2052 }
989} 2053}
990 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
991/*****************************************************************************/ 2069/*****************************************************************************/
992 2070
993/* 2071/*
994 * 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
995 * 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
996 * the branching factor of the d-tree. 2074 * the branching factor of the d-tree.
997 */ 2075 */
998 2076
999/* 2077/*
… …
1147 2225
1148static ANSIG signals [EV_NSIG - 1]; 2226static ANSIG signals [EV_NSIG - 1];
1149 2227
1150/*****************************************************************************/ 2228/*****************************************************************************/
1151 2229
1152/* used to prepare libev internal fd's */ 2230#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1153/* 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
1154inline_speed void 2277inline_speed void
1155fd_intern (int fd) 2278evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1156{ 2279{
1157#ifdef _WIN32 2280 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1158 unsigned long arg = 1;
1159 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1160#else
1161 fcntl (fd, F_SETFD, FD_CLOEXEC);
1162 fcntl (fd, F_SETFL, O_NONBLOCK);
1163#endif
1164}
1165 2281
1166static void noinline 2282 if (expect_true (*flag))
1167evpipe_init (EV_P) 2283 return;
1168{ 2284
1169 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)
1170 { 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
1171#if EV_USE_EVENTFD 2301#if EV_USE_EVENTFD
1172 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2302 if (evpipe [0] < 0)
1173 if (evfd < 0 && errno == EINVAL)
1174 evfd = eventfd (0, 0);
1175
1176 if (evfd >= 0)
1177 { 2303 {
1178 evpipe [0] = -1; 2304 uint64_t counter = 1;
1179 fd_intern (evfd); /* doing it twice doesn't hurt */ 2305 write (evpipe [1], &counter, sizeof (uint64_t));
1180 ev_io_set (&pipe_w, evfd, EV_READ);
1181 } 2306 }
1182 else 2307 else
1183#endif 2308#endif
1184 { 2309 {
1185 while (pipe (evpipe)) 2310#ifdef _WIN32
1186 ev_syserr ("(libev) error creating signal/async pipe"); 2311 WSABUF buf;
1187 2312 DWORD sent;
1188 fd_intern (evpipe [0]); 2313 buf.buf = &buf;
1189 fd_intern (evpipe [1]); 2314 buf.len = 1;
1190 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
1191 } 2319 }
1192
1193 ev_io_start (EV_A_ &pipe_w);
1194 ev_unref (EV_A); /* watcher should not keep loop alive */
1195 }
1196}
1197
1198inline_size void
1199evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1200{
1201 if (!*flag)
1202 {
1203 int old_errno = errno; /* save errno because write might clobber it */
1204
1205 *flag = 1;
1206
1207#if EV_USE_EVENTFD
1208 if (evfd >= 0)
1209 {
1210 uint64_t counter = 1;
1211 write (evfd, &counter, sizeof (uint64_t));
1212 }
1213 else
1214#endif
1215 write (evpipe [1], &old_errno, 1);
1216 2320
1217 errno = old_errno; 2321 errno = old_errno;
1218 } 2322 }
1219} 2323}
1220 2324
… …
1223static void 2327static void
1224pipecb (EV_P_ ev_io *iow, int revents) 2328pipecb (EV_P_ ev_io *iow, int revents)
1225{ 2329{
1226 int i; 2330 int i;
1227 2331
2332 if (revents & EV_READ)
2333 {
1228#if EV_USE_EVENTFD 2334#if EV_USE_EVENTFD
1229 if (evfd >= 0) 2335 if (evpipe [0] < 0)
1230 { 2336 {
1231 uint64_t counter; 2337 uint64_t counter;
1232 read (evfd, &counter, sizeof (uint64_t)); 2338 read (evpipe [1], &counter, sizeof (uint64_t));
1233 } 2339 }
1234 else 2340 else
1235#endif 2341#endif
1236 { 2342 {
1237 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
1238 read (evpipe [0], &dummy, 1); 2352 read (evpipe [0], &dummy, sizeof (dummy));
2353#endif
2354 }
1239 } 2355 }
1240 2356
2357 pipe_write_skipped = 0;
2358
2359 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2360
2361#if EV_SIGNAL_ENABLE
1241 if (sig_pending) 2362 if (sig_pending)
1242 { 2363 {
1243 sig_pending = 0; 2364 sig_pending = 0;
2365
2366 ECB_MEMORY_FENCE;
1244 2367
1245 for (i = EV_NSIG - 1; i--; ) 2368 for (i = EV_NSIG - 1; i--; )
1246 if (expect_false (signals [i].pending)) 2369 if (expect_false (signals [i].pending))
1247 ev_feed_signal_event (EV_A_ i + 1); 2370 ev_feed_signal_event (EV_A_ i + 1);
1248 } 2371 }
2372#endif
1249 2373
1250#if EV_ASYNC_ENABLE 2374#if EV_ASYNC_ENABLE
1251 if (async_pending) 2375 if (async_pending)
1252 { 2376 {
1253 async_pending = 0; 2377 async_pending = 0;
2378
2379 ECB_MEMORY_FENCE;
1254 2380
1255 for (i = asynccnt; i--; ) 2381 for (i = asynccnt; i--; )
1256 if (asyncs [i]->sent) 2382 if (asyncs [i]->sent)
1257 { 2383 {
1258 asyncs [i]->sent = 0; 2384 asyncs [i]->sent = 0;
2385 ECB_MEMORY_FENCE_RELEASE;
1259 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2386 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1260 } 2387 }
1261 } 2388 }
1262#endif 2389#endif
1263} 2390}
1264 2391
1265/*****************************************************************************/ 2392/*****************************************************************************/
1266 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
1267static void 2410static void
1268ev_sighandler (int signum) 2411ev_sighandler (int signum)
1269{ 2412{
1270#if EV_MULTIPLICITY
1271 EV_P = signals [signum - 1].loop;
1272#endif
1273
1274#if _WIN32 2413#ifdef _WIN32
1275 signal (signum, ev_sighandler); 2414 signal (signum, ev_sighandler);
1276#endif 2415#endif
1277 2416
1278 signals [signum - 1].pending = 1; 2417 ev_feed_signal (signum);
1279 evpipe_write (EV_A_ &sig_pending);
1280} 2418}
1281 2419
1282void noinline 2420void noinline
1283ev_feed_signal_event (EV_P_ int signum) 2421ev_feed_signal_event (EV_P_ int signum) EV_THROW
1284{ 2422{
1285 WL w; 2423 WL w;
1286 2424
1287 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2425 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1288 return; 2426 return;
1289 2427
1290 --signum; 2428 --signum;
1291 2429
1292#if EV_MULTIPLICITY 2430#if EV_MULTIPLICITY
… …
1296 if (expect_false (signals [signum].loop != EV_A)) 2434 if (expect_false (signals [signum].loop != EV_A))
1297 return; 2435 return;
1298#endif 2436#endif
1299 2437
1300 signals [signum].pending = 0; 2438 signals [signum].pending = 0;
2439 ECB_MEMORY_FENCE_RELEASE;
1301 2440
1302 for (w = signals [signum].head; w; w = w->next) 2441 for (w = signals [signum].head; w; w = w->next)
1303 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2442 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1304} 2443}
1305 2444
… …
1321 break; 2460 break;
1322 } 2461 }
1323} 2462}
1324#endif 2463#endif
1325 2464
2465#endif
2466
1326/*****************************************************************************/ 2467/*****************************************************************************/
1327 2468
2469#if EV_CHILD_ENABLE
1328static WL childs [EV_PID_HASHSIZE]; 2470static WL childs [EV_PID_HASHSIZE];
1329
1330#ifndef _WIN32
1331 2471
1332static ev_signal childev; 2472static ev_signal childev;
1333 2473
1334#ifndef WIFCONTINUED 2474#ifndef WIFCONTINUED
1335# define WIFCONTINUED(status) 0 2475# define WIFCONTINUED(status) 0
… …
1340child_reap (EV_P_ int chain, int pid, int status) 2480child_reap (EV_P_ int chain, int pid, int status)
1341{ 2481{
1342 ev_child *w; 2482 ev_child *w;
1343 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2483 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1344 2484
1345 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)
1346 { 2486 {
1347 if ((w->pid == pid || !w->pid) 2487 if ((w->pid == pid || !w->pid)
1348 && (!traced || (w->flags & 1))) 2488 && (!traced || (w->flags & 1)))
1349 { 2489 {
1350 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 */
… …
1375 /* 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 */
1376 /* 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 */
1377 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2517 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1378 2518
1379 child_reap (EV_A_ pid, pid, status); 2519 child_reap (EV_A_ pid, pid, status);
1380 if (EV_PID_HASHSIZE > 1) 2520 if ((EV_PID_HASHSIZE) > 1)
1381 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 */
1382} 2522}
1383 2523
1384#endif 2524#endif
1385 2525
1386/*****************************************************************************/ 2526/*****************************************************************************/
1387 2527
2528#if EV_USE_IOCP
2529# include "ev_iocp.c"
2530#endif
1388#if EV_USE_PORT 2531#if EV_USE_PORT
1389# include "ev_port.c" 2532# include "ev_port.c"
1390#endif 2533#endif
1391#if EV_USE_KQUEUE 2534#if EV_USE_KQUEUE
1392# include "ev_kqueue.c" 2535# include "ev_kqueue.c"
… …
1399#endif 2542#endif
1400#if EV_USE_SELECT 2543#if EV_USE_SELECT
1401# include "ev_select.c" 2544# include "ev_select.c"
1402#endif 2545#endif
1403 2546
1404int 2547int ecb_cold
1405ev_version_major (void) 2548ev_version_major (void) EV_THROW
1406{ 2549{
1407 return EV_VERSION_MAJOR; 2550 return EV_VERSION_MAJOR;
1408} 2551}
1409 2552
1410int 2553int ecb_cold
1411ev_version_minor (void) 2554ev_version_minor (void) EV_THROW
1412{ 2555{
1413 return EV_VERSION_MINOR; 2556 return EV_VERSION_MINOR;
1414} 2557}
1415 2558
1416/* 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 */
1417int inline_size 2560int inline_size ecb_cold
1418enable_secure (void) 2561enable_secure (void)
1419{ 2562{
1420#ifdef _WIN32 2563#ifdef _WIN32
1421 return 0; 2564 return 0;
1422#else 2565#else
1423 return getuid () != geteuid () 2566 return getuid () != geteuid ()
1424 || getgid () != getegid (); 2567 || getgid () != getegid ();
1425#endif 2568#endif
1426} 2569}
1427 2570
1428unsigned int 2571unsigned int ecb_cold
1429ev_supported_backends (void) 2572ev_supported_backends (void) EV_THROW
1430{ 2573{
1431 unsigned int flags = 0; 2574 unsigned int flags = 0;
1432 2575
1433 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2576 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1434 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2577 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1437 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2580 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1438 2581
1439 return flags; 2582 return flags;
1440} 2583}
1441 2584
1442unsigned int 2585unsigned int ecb_cold
1443ev_recommended_backends (void) 2586ev_recommended_backends (void) EV_THROW
1444{ 2587{
1445 unsigned int flags = ev_supported_backends (); 2588 unsigned int flags = ev_supported_backends ();
1446 2589
1447#ifndef __NetBSD__ 2590#ifndef __NetBSD__
1448 /* kqueue is borked on everything but netbsd apparently */ 2591 /* kqueue is borked on everything but netbsd apparently */
… …
1452#ifdef __APPLE__ 2595#ifdef __APPLE__
1453 /* only select works correctly on that "unix-certified" platform */ 2596 /* only select works correctly on that "unix-certified" platform */
1454 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2597 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1455 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 */
1456#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
1457 2603
1458 return flags; 2604 return flags;
1459} 2605}
1460 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
1461unsigned int 2619unsigned int
1462ev_embeddable_backends (void) 2620ev_backend (EV_P) EV_THROW
1463{ 2621{
1464 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2622 return backend;
1465
1466 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1467 /* please fix it and tell me how to detect the fix */
1468 flags &= ~EVBACKEND_EPOLL;
1469
1470 return flags;
1471} 2623}
1472 2624
2625#if EV_FEATURE_API
1473unsigned int 2626unsigned int
1474ev_backend (EV_P) 2627ev_iteration (EV_P) EV_THROW
1475{ 2628{
1476 return backend; 2629 return loop_count;
1477} 2630}
1478 2631
1479#if EV_MINIMAL < 2
1480unsigned int 2632unsigned int
1481ev_loop_count (EV_P) 2633ev_depth (EV_P) EV_THROW
1482{
1483 return loop_count;
1484}
1485
1486unsigned int
1487ev_loop_depth (EV_P)
1488{ 2634{
1489 return loop_depth; 2635 return loop_depth;
1490} 2636}
1491 2637
1492void 2638void
1493ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2639ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1494{ 2640{
1495 io_blocktime = interval; 2641 io_blocktime = interval;
1496} 2642}
1497 2643
1498void 2644void
1499ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2645ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1500{ 2646{
1501 timeout_blocktime = interval; 2647 timeout_blocktime = interval;
1502} 2648}
1503 2649
1504void 2650void
1505ev_set_userdata (EV_P_ void *data) 2651ev_set_userdata (EV_P_ void *data) EV_THROW
1506{ 2652{
1507 userdata = data; 2653 userdata = data;
1508} 2654}
1509 2655
1510void * 2656void *
1511ev_userdata (EV_P) 2657ev_userdata (EV_P) EV_THROW
1512{ 2658{
1513 return userdata; 2659 return userdata;
1514} 2660}
1515 2661
2662void
1516void 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
1517{ 2664{
1518 invoke_cb = invoke_pending_cb; 2665 invoke_cb = invoke_pending_cb;
1519} 2666}
1520 2667
2668void
1521void 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
1522{ 2670{
1523 release_cb = release; 2671 release_cb = release;
1524 acquire_cb = acquire; 2672 acquire_cb = acquire;
1525} 2673}
1526#endif 2674#endif
1527 2675
1528/* initialise a loop structure, must be zero-initialised */ 2676/* initialise a loop structure, must be zero-initialised */
1529static void noinline 2677static void noinline ecb_cold
1530loop_init (EV_P_ unsigned int flags) 2678loop_init (EV_P_ unsigned int flags) EV_THROW
1531{ 2679{
1532 if (!backend) 2680 if (!backend)
1533 { 2681 {
2682 origflags = flags;
2683
1534#if EV_USE_REALTIME 2684#if EV_USE_REALTIME
1535 if (!have_realtime) 2685 if (!have_realtime)
1536 { 2686 {
1537 struct timespec ts; 2687 struct timespec ts;
1538 2688
… …
1560 if (!(flags & EVFLAG_NOENV) 2710 if (!(flags & EVFLAG_NOENV)
1561 && !enable_secure () 2711 && !enable_secure ()
1562 && getenv ("LIBEV_FLAGS")) 2712 && getenv ("LIBEV_FLAGS"))
1563 flags = atoi (getenv ("LIBEV_FLAGS")); 2713 flags = atoi (getenv ("LIBEV_FLAGS"));
1564 2714
1565 ev_rt_now = ev_time (); 2715 ev_rt_now = ev_time ();
1566 mn_now = get_clock (); 2716 mn_now = get_clock ();
1567 now_floor = mn_now; 2717 now_floor = mn_now;
1568 rtmn_diff = ev_rt_now - mn_now; 2718 rtmn_diff = ev_rt_now - mn_now;
1569#if EV_MINIMAL < 2 2719#if EV_FEATURE_API
1570 invoke_cb = ev_invoke_pending; 2720 invoke_cb = ev_invoke_pending;
1571#endif 2721#endif
1572 2722
1573 io_blocktime = 0.; 2723 io_blocktime = 0.;
1574 timeout_blocktime = 0.; 2724 timeout_blocktime = 0.;
1575 backend = 0; 2725 backend = 0;
1576 backend_fd = -1; 2726 backend_fd = -1;
1577 sig_pending = 0; 2727 sig_pending = 0;
1578#if EV_ASYNC_ENABLE 2728#if EV_ASYNC_ENABLE
1579 async_pending = 0; 2729 async_pending = 0;
1580#endif 2730#endif
2731 pipe_write_skipped = 0;
2732 pipe_write_wanted = 0;
2733 evpipe [0] = -1;
2734 evpipe [1] = -1;
1581#if EV_USE_INOTIFY 2735#if EV_USE_INOTIFY
1582 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2736 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1583#endif 2737#endif
1584#if EV_USE_SIGNALFD 2738#if EV_USE_SIGNALFD
1585 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2739 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1586#endif 2740#endif
1587 2741
1588 if (!(flags & 0x0000ffffU)) 2742 if (!(flags & EVBACKEND_MASK))
1589 flags |= ev_recommended_backends (); 2743 flags |= ev_recommended_backends ();
1590 2744
2745#if EV_USE_IOCP
2746 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2747#endif
1591#if EV_USE_PORT 2748#if EV_USE_PORT
1592 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2749 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1593#endif 2750#endif
1594#if EV_USE_KQUEUE 2751#if EV_USE_KQUEUE
1595 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2752 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1604 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2761 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1605#endif 2762#endif
1606 2763
1607 ev_prepare_init (&pending_w, pendingcb); 2764 ev_prepare_init (&pending_w, pendingcb);
1608 2765
2766#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1609 ev_init (&pipe_w, pipecb); 2767 ev_init (&pipe_w, pipecb);
1610 ev_set_priority (&pipe_w, EV_MAXPRI); 2768 ev_set_priority (&pipe_w, EV_MAXPRI);
2769#endif
1611 } 2770 }
1612} 2771}
1613 2772
1614/* free up a loop structure */ 2773/* free up a loop structure */
1615static void noinline 2774void ecb_cold
1616loop_destroy (EV_P) 2775ev_loop_destroy (EV_P)
1617{ 2776{
1618 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
1619 2801
1620 if (ev_is_active (&pipe_w)) 2802 if (ev_is_active (&pipe_w))
1621 { 2803 {
1622 /*ev_ref (EV_A);*/ 2804 /*ev_ref (EV_A);*/
1623 /*ev_io_stop (EV_A_ &pipe_w);*/ 2805 /*ev_io_stop (EV_A_ &pipe_w);*/
1624 2806
1625#if EV_USE_EVENTFD
1626 if (evfd >= 0)
1627 close (evfd);
1628#endif
1629
1630 if (evpipe [0] >= 0)
1631 {
1632 EV_WIN32_CLOSE_FD (evpipe [0]); 2807 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1633 EV_WIN32_CLOSE_FD (evpipe [1]); 2808 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1634 }
1635 } 2809 }
1636 2810
1637#if EV_USE_SIGNALFD 2811#if EV_USE_SIGNALFD
1638 if (ev_is_active (&sigfd_w)) 2812 if (ev_is_active (&sigfd_w))
1639 {
1640 /*ev_ref (EV_A);*/
1641 /*ev_io_stop (EV_A_ &sigfd_w);*/
1642
1643 close (sigfd); 2813 close (sigfd);
1644 }
1645#endif 2814#endif
1646 2815
1647#if EV_USE_INOTIFY 2816#if EV_USE_INOTIFY
1648 if (fs_fd >= 0) 2817 if (fs_fd >= 0)
1649 close (fs_fd); 2818 close (fs_fd);
1650#endif 2819#endif
1651 2820
1652 if (backend_fd >= 0) 2821 if (backend_fd >= 0)
1653 close (backend_fd); 2822 close (backend_fd);
1654 2823
2824#if EV_USE_IOCP
2825 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2826#endif
1655#if EV_USE_PORT 2827#if EV_USE_PORT
1656 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2828 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1657#endif 2829#endif
1658#if EV_USE_KQUEUE 2830#if EV_USE_KQUEUE
1659 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2831 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1686 array_free (periodic, EMPTY); 2858 array_free (periodic, EMPTY);
1687#endif 2859#endif
1688#if EV_FORK_ENABLE 2860#if EV_FORK_ENABLE
1689 array_free (fork, EMPTY); 2861 array_free (fork, EMPTY);
1690#endif 2862#endif
2863#if EV_CLEANUP_ENABLE
2864 array_free (cleanup, EMPTY);
2865#endif
1691 array_free (prepare, EMPTY); 2866 array_free (prepare, EMPTY);
1692 array_free (check, EMPTY); 2867 array_free (check, EMPTY);
1693#if EV_ASYNC_ENABLE 2868#if EV_ASYNC_ENABLE
1694 array_free (async, EMPTY); 2869 array_free (async, EMPTY);
1695#endif 2870#endif
1696 2871
1697 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
1698} 2882}
1699 2883
1700#if EV_USE_INOTIFY 2884#if EV_USE_INOTIFY
1701inline_size void infy_fork (EV_P); 2885inline_size void infy_fork (EV_P);
1702#endif 2886#endif
… …
1715#endif 2899#endif
1716#if EV_USE_INOTIFY 2900#if EV_USE_INOTIFY
1717 infy_fork (EV_A); 2901 infy_fork (EV_A);
1718#endif 2902#endif
1719 2903
2904#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1720 if (ev_is_active (&pipe_w)) 2905 if (ev_is_active (&pipe_w))
1721 { 2906 {
1722 /* this "locks" the handlers against writing to the pipe */ 2907 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1723 /* while we modify the fd vars */
1724 sig_pending = 1;
1725#if EV_ASYNC_ENABLE
1726 async_pending = 1;
1727#endif
1728 2908
1729 ev_ref (EV_A); 2909 ev_ref (EV_A);
1730 ev_io_stop (EV_A_ &pipe_w); 2910 ev_io_stop (EV_A_ &pipe_w);
1731 2911
1732#if EV_USE_EVENTFD
1733 if (evfd >= 0)
1734 close (evfd);
1735#endif
1736
1737 if (evpipe [0] >= 0) 2912 if (evpipe [0] >= 0)
1738 {
1739 EV_WIN32_CLOSE_FD (evpipe [0]); 2913 EV_WIN32_CLOSE_FD (evpipe [0]);
1740 EV_WIN32_CLOSE_FD (evpipe [1]);
1741 }
1742 2914
1743 evpipe_init (EV_A); 2915 evpipe_init (EV_A);
1744 /* now iterate over everything, in case we missed something */ 2916 /* iterate over everything, in case we missed something before */
1745 pipecb (EV_A_ &pipe_w, EV_READ); 2917 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1746 } 2918 }
2919#endif
1747 2920
1748 postfork = 0; 2921 postfork = 0;
1749} 2922}
1750 2923
1751#if EV_MULTIPLICITY 2924#if EV_MULTIPLICITY
1752 2925
1753struct ev_loop * 2926struct ev_loop * ecb_cold
1754ev_loop_new (unsigned int flags) 2927ev_loop_new (unsigned int flags) EV_THROW
1755{ 2928{
1756 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2929 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1757 2930
1758 memset (EV_A, 0, sizeof (struct ev_loop)); 2931 memset (EV_A, 0, sizeof (struct ev_loop));
1759 loop_init (EV_A_ flags); 2932 loop_init (EV_A_ flags);
1760 2933
1761 if (ev_backend (EV_A)) 2934 if (ev_backend (EV_A))
1762 return EV_A; 2935 return EV_A;
1763 2936
2937 ev_free (EV_A);
1764 return 0; 2938 return 0;
1765} 2939}
1766 2940
1767void
1768ev_loop_destroy (EV_P)
1769{
1770 loop_destroy (EV_A);
1771 ev_free (loop);
1772}
1773
1774void
1775ev_loop_fork (EV_P)
1776{
1777 postfork = 1; /* must be in line with ev_default_fork */
1778}
1779#endif /* multiplicity */ 2941#endif /* multiplicity */
1780 2942
1781#if EV_VERIFY 2943#if EV_VERIFY
1782static void noinline 2944static void noinline ecb_cold
1783verify_watcher (EV_P_ W w) 2945verify_watcher (EV_P_ W w)
1784{ 2946{
1785 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));
1786 2948
1787 if (w->pending) 2949 if (w->pending)
1788 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));
1789} 2951}
1790 2952
1791static void noinline 2953static void noinline ecb_cold
1792verify_heap (EV_P_ ANHE *heap, int N) 2954verify_heap (EV_P_ ANHE *heap, int N)
1793{ 2955{
1794 int i; 2956 int i;
1795 2957
1796 for (i = HEAP0; i < N + HEAP0; ++i) 2958 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1801 2963
1802 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2964 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1803 } 2965 }
1804} 2966}
1805 2967
1806static void noinline 2968static void noinline ecb_cold
1807array_verify (EV_P_ W *ws, int cnt) 2969array_verify (EV_P_ W *ws, int cnt)
1808{ 2970{
1809 while (cnt--) 2971 while (cnt--)
1810 { 2972 {
1811 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2973 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1812 verify_watcher (EV_A_ ws [cnt]); 2974 verify_watcher (EV_A_ ws [cnt]);
1813 } 2975 }
1814} 2976}
1815#endif 2977#endif
1816 2978
1817#if EV_MINIMAL < 2 2979#if EV_FEATURE_API
1818void 2980void ecb_cold
1819ev_loop_verify (EV_P) 2981ev_verify (EV_P) EV_THROW
1820{ 2982{
1821#if EV_VERIFY 2983#if EV_VERIFY
1822 int i; 2984 int i;
1823 WL w; 2985 WL w, w2;
1824 2986
1825 assert (activecnt >= -1); 2987 assert (activecnt >= -1);
1826 2988
1827 assert (fdchangemax >= fdchangecnt); 2989 assert (fdchangemax >= fdchangecnt);
1828 for (i = 0; i < fdchangecnt; ++i) 2990 for (i = 0; i < fdchangecnt; ++i)
1829 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2991 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1830 2992
1831 assert (anfdmax >= 0); 2993 assert (anfdmax >= 0);
1832 for (i = 0; i < anfdmax; ++i) 2994 for (i = 0; i < anfdmax; ++i)
2995 {
2996 int j = 0;
2997
1833 for (w = anfds [i].head; w; w = w->next) 2998 for (w = w2 = anfds [i].head; w; w = w->next)
1834 { 2999 {
1835 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
1836 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));
1837 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));
1838 } 3010 }
3011 }
1839 3012
1840 assert (timermax >= timercnt); 3013 assert (timermax >= timercnt);
1841 verify_heap (EV_A_ timers, timercnt); 3014 verify_heap (EV_A_ timers, timercnt);
1842 3015
1843#if EV_PERIODIC_ENABLE 3016#if EV_PERIODIC_ENABLE
… …
1858#if EV_FORK_ENABLE 3031#if EV_FORK_ENABLE
1859 assert (forkmax >= forkcnt); 3032 assert (forkmax >= forkcnt);
1860 array_verify (EV_A_ (W *)forks, forkcnt); 3033 array_verify (EV_A_ (W *)forks, forkcnt);
1861#endif 3034#endif
1862 3035
3036#if EV_CLEANUP_ENABLE
3037 assert (cleanupmax >= cleanupcnt);
3038 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3039#endif
3040
1863#if EV_ASYNC_ENABLE 3041#if EV_ASYNC_ENABLE
1864 assert (asyncmax >= asynccnt); 3042 assert (asyncmax >= asynccnt);
1865 array_verify (EV_A_ (W *)asyncs, asynccnt); 3043 array_verify (EV_A_ (W *)asyncs, asynccnt);
1866#endif 3044#endif
1867 3045
3046#if EV_PREPARE_ENABLE
1868 assert (preparemax >= preparecnt); 3047 assert (preparemax >= preparecnt);
1869 array_verify (EV_A_ (W *)prepares, preparecnt); 3048 array_verify (EV_A_ (W *)prepares, preparecnt);
3049#endif
1870 3050
3051#if EV_CHECK_ENABLE
1871 assert (checkmax >= checkcnt); 3052 assert (checkmax >= checkcnt);
1872 array_verify (EV_A_ (W *)checks, checkcnt); 3053 array_verify (EV_A_ (W *)checks, checkcnt);
3054#endif
1873 3055
1874# if 0 3056# if 0
3057#if EV_CHILD_ENABLE
1875 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)
1876 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3059 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3060#endif
1877# endif 3061# endif
1878#endif 3062#endif
1879} 3063}
1880#endif 3064#endif
1881 3065
1882#if EV_MULTIPLICITY 3066#if EV_MULTIPLICITY
1883struct ev_loop * 3067struct ev_loop * ecb_cold
1884ev_default_loop_init (unsigned int flags)
1885#else 3068#else
1886int 3069int
3070#endif
1887ev_default_loop (unsigned int flags) 3071ev_default_loop (unsigned int flags) EV_THROW
1888#endif
1889{ 3072{
1890 if (!ev_default_loop_ptr) 3073 if (!ev_default_loop_ptr)
1891 { 3074 {
1892#if EV_MULTIPLICITY 3075#if EV_MULTIPLICITY
1893 EV_P = ev_default_loop_ptr = &default_loop_struct; 3076 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1897 3080
1898 loop_init (EV_A_ flags); 3081 loop_init (EV_A_ flags);
1899 3082
1900 if (ev_backend (EV_A)) 3083 if (ev_backend (EV_A))
1901 { 3084 {
1902#ifndef _WIN32 3085#if EV_CHILD_ENABLE
1903 ev_signal_init (&childev, childcb, SIGCHLD); 3086 ev_signal_init (&childev, childcb, SIGCHLD);
1904 ev_set_priority (&childev, EV_MAXPRI); 3087 ev_set_priority (&childev, EV_MAXPRI);
1905 ev_signal_start (EV_A_ &childev); 3088 ev_signal_start (EV_A_ &childev);
1906 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3089 ev_unref (EV_A); /* child watcher should not keep loop alive */
1907#endif 3090#endif
… …
1912 3095
1913 return ev_default_loop_ptr; 3096 return ev_default_loop_ptr;
1914} 3097}
1915 3098
1916void 3099void
1917ev_default_destroy (void) 3100ev_loop_fork (EV_P) EV_THROW
1918{ 3101{
1919#if EV_MULTIPLICITY 3102 postfork = 1;
1920 EV_P = ev_default_loop_ptr;
1921#endif
1922
1923 ev_default_loop_ptr = 0;
1924
1925#ifndef _WIN32
1926 ev_ref (EV_A); /* child watcher */
1927 ev_signal_stop (EV_A_ &childev);
1928#endif
1929
1930 loop_destroy (EV_A);
1931}
1932
1933void
1934ev_default_fork (void)
1935{
1936#if EV_MULTIPLICITY
1937 EV_P = ev_default_loop_ptr;
1938#endif
1939
1940 postfork = 1; /* must be in line with ev_loop_fork */
1941} 3103}
1942 3104
1943/*****************************************************************************/ 3105/*****************************************************************************/
1944 3106
1945void 3107void
… …
1947{ 3109{
1948 EV_CB_INVOKE ((W)w, revents); 3110 EV_CB_INVOKE ((W)w, revents);
1949} 3111}
1950 3112
1951unsigned int 3113unsigned int
1952ev_pending_count (EV_P) 3114ev_pending_count (EV_P) EV_THROW
1953{ 3115{
1954 int pri; 3116 int pri;
1955 unsigned int count = 0; 3117 unsigned int count = 0;
1956 3118
1957 for (pri = NUMPRI; pri--; ) 3119 for (pri = NUMPRI; pri--; )
… …
1961} 3123}
1962 3124
1963void noinline 3125void noinline
1964ev_invoke_pending (EV_P) 3126ev_invoke_pending (EV_P)
1965{ 3127{
1966 int pri; 3128 pendingpri = NUMPRI;
1967 3129
1968 for (pri = NUMPRI; pri--; ) 3130 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3131 {
3132 --pendingpri;
3133
1969 while (pendingcnt [pri]) 3134 while (pendingcnt [pendingpri])
1970 { 3135 {
1971 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3136 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1972 3137
1973 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1974 /* ^ this is no longer true, as pending_w could be here */
1975
1976 p->w->pending = 0; 3138 p->w->pending = 0;
1977 EV_CB_INVOKE (p->w, p->events); 3139 EV_CB_INVOKE (p->w, p->events);
1978 EV_FREQUENT_CHECK; 3140 EV_FREQUENT_CHECK;
1979 } 3141 }
3142 }
1980} 3143}
1981 3144
1982#if EV_IDLE_ENABLE 3145#if EV_IDLE_ENABLE
1983/* make idle watchers pending. this handles the "call-idle */ 3146/* make idle watchers pending. this handles the "call-idle */
1984/* only when higher priorities are idle" logic */ 3147/* only when higher priorities are idle" logic */
… …
2036 EV_FREQUENT_CHECK; 3199 EV_FREQUENT_CHECK;
2037 feed_reverse (EV_A_ (W)w); 3200 feed_reverse (EV_A_ (W)w);
2038 } 3201 }
2039 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3202 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2040 3203
2041 feed_reverse_done (EV_A_ EV_TIMEOUT); 3204 feed_reverse_done (EV_A_ EV_TIMER);
2042 } 3205 }
2043} 3206}
2044 3207
2045#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
2046/* make periodics pending */ 3234/* make periodics pending */
2047inline_size void 3235inline_size void
2048periodics_reify (EV_P) 3236periodics_reify (EV_P)
2049{ 3237{
2050 EV_FREQUENT_CHECK; 3238 EV_FREQUENT_CHECK;
2051 3239
2052 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3240 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2053 { 3241 {
2054 int feed_count = 0;
2055
2056 do 3242 do
2057 { 3243 {
2058 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3244 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2059 3245
2060 /*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)));*/
… …
2069 ANHE_at_cache (periodics [HEAP0]); 3255 ANHE_at_cache (periodics [HEAP0]);
2070 downheap (periodics, periodiccnt, HEAP0); 3256 downheap (periodics, periodiccnt, HEAP0);
2071 } 3257 }
2072 else if (w->interval) 3258 else if (w->interval)
2073 { 3259 {
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3260 periodic_recalc (EV_A_ w);
2075 /* if next trigger time is not sufficiently in the future, put it there */
2076 /* this might happen because of floating point inexactness */
2077 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2078 {
2079 ev_at (w) += w->interval;
2080
2081 /* if interval is unreasonably low we might still have a time in the past */
2082 /* so correct this. this will make the periodic very inexact, but the user */
2083 /* has effectively asked to get triggered more often than possible */
2084 if (ev_at (w) < ev_rt_now)
2085 ev_at (w) = ev_rt_now;
2086 }
2087
2088 ANHE_at_cache (periodics [HEAP0]); 3261 ANHE_at_cache (periodics [HEAP0]);
2089 downheap (periodics, periodiccnt, HEAP0); 3262 downheap (periodics, periodiccnt, HEAP0);
2090 } 3263 }
2091 else 3264 else
2092 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3265 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2099 feed_reverse_done (EV_A_ EV_PERIODIC); 3272 feed_reverse_done (EV_A_ EV_PERIODIC);
2100 } 3273 }
2101} 3274}
2102 3275
2103/* simply recalculate all periodics */ 3276/* simply recalculate all periodics */
2104/* 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? */
2105static void noinline 3278static void noinline ecb_cold
2106periodics_reschedule (EV_P) 3279periodics_reschedule (EV_P)
2107{ 3280{
2108 int i; 3281 int i;
2109 3282
2110 /* adjust periodics after time jump */ 3283 /* adjust periodics after time jump */
… …
2113 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3286 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2114 3287
2115 if (w->reschedule_cb) 3288 if (w->reschedule_cb)
2116 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3289 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2117 else if (w->interval) 3290 else if (w->interval)
2118 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3291 periodic_recalc (EV_A_ w);
2119 3292
2120 ANHE_at_cache (periodics [i]); 3293 ANHE_at_cache (periodics [i]);
2121 } 3294 }
2122 3295
2123 reheap (periodics, periodiccnt); 3296 reheap (periodics, periodiccnt);
2124} 3297}
2125#endif 3298#endif
2126 3299
2127/* adjust all timers by a given offset */ 3300/* adjust all timers by a given offset */
2128static void noinline 3301static void noinline ecb_cold
2129timers_reschedule (EV_P_ ev_tstamp adjust) 3302timers_reschedule (EV_P_ ev_tstamp adjust)
2130{ 3303{
2131 int i; 3304 int i;
2132 3305
2133 for (i = 0; i < timercnt; ++i) 3306 for (i = 0; i < timercnt; ++i)
… …
2137 ANHE_at_cache (*he); 3310 ANHE_at_cache (*he);
2138 } 3311 }
2139} 3312}
2140 3313
2141/* fetch new monotonic and realtime times from the kernel */ 3314/* fetch new monotonic and realtime times from the kernel */
2142/* also detetc if there was a timejump, and act accordingly */ 3315/* also detect if there was a timejump, and act accordingly */
2143inline_speed void 3316inline_speed void
2144time_update (EV_P_ ev_tstamp max_block) 3317time_update (EV_P_ ev_tstamp max_block)
2145{ 3318{
2146#if EV_USE_MONOTONIC 3319#if EV_USE_MONOTONIC
2147 if (expect_true (have_monotonic)) 3320 if (expect_true (have_monotonic))
… …
2170 * 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
2171 * in the unlikely event of having been preempted here. 3344 * in the unlikely event of having been preempted here.
2172 */ 3345 */
2173 for (i = 4; --i; ) 3346 for (i = 4; --i; )
2174 { 3347 {
3348 ev_tstamp diff;
2175 rtmn_diff = ev_rt_now - mn_now; 3349 rtmn_diff = ev_rt_now - mn_now;
2176 3350
3351 diff = odiff - rtmn_diff;
3352
2177 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3353 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2178 return; /* all is well */ 3354 return; /* all is well */
2179 3355
2180 ev_rt_now = ev_time (); 3356 ev_rt_now = ev_time ();
2181 mn_now = get_clock (); 3357 mn_now = get_clock ();
2182 now_floor = mn_now; 3358 now_floor = mn_now;
… …
2204 3380
2205 mn_now = ev_rt_now; 3381 mn_now = ev_rt_now;
2206 } 3382 }
2207} 3383}
2208 3384
2209void 3385int
2210ev_loop (EV_P_ int flags) 3386ev_run (EV_P_ int flags)
2211{ 3387{
2212#if EV_MINIMAL < 2 3388#if EV_FEATURE_API
2213 ++loop_depth; 3389 ++loop_depth;
2214#endif 3390#endif
2215 3391
2216 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));
2217 3393
2218 loop_done = EVUNLOOP_CANCEL; 3394 loop_done = EVBREAK_CANCEL;
2219 3395
2220 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 */
2221 3397
2222 do 3398 do
2223 { 3399 {
2224#if EV_VERIFY >= 2 3400#if EV_VERIFY >= 2
2225 ev_loop_verify (EV_A); 3401 ev_verify (EV_A);
2226#endif 3402#endif
2227 3403
2228#ifndef _WIN32 3404#ifndef _WIN32
2229 if (expect_false (curpid)) /* penalise the forking check even more */ 3405 if (expect_false (curpid)) /* penalise the forking check even more */
2230 if (expect_false (getpid () != curpid)) 3406 if (expect_false (getpid () != curpid))
… …
2242 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3418 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2243 EV_INVOKE_PENDING; 3419 EV_INVOKE_PENDING;
2244 } 3420 }
2245#endif 3421#endif
2246 3422
3423#if EV_PREPARE_ENABLE
2247 /* queue prepare watchers (and execute them) */ 3424 /* queue prepare watchers (and execute them) */
2248 if (expect_false (preparecnt)) 3425 if (expect_false (preparecnt))
2249 { 3426 {
2250 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3427 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2251 EV_INVOKE_PENDING; 3428 EV_INVOKE_PENDING;
2252 } 3429 }
3430#endif
2253 3431
2254 if (expect_false (loop_done)) 3432 if (expect_false (loop_done))
2255 break; 3433 break;
2256 3434
2257 /* we might have forked, so reify kernel state if necessary */ 3435 /* we might have forked, so reify kernel state if necessary */
… …
2264 /* calculate blocking time */ 3442 /* calculate blocking time */
2265 { 3443 {
2266 ev_tstamp waittime = 0.; 3444 ev_tstamp waittime = 0.;
2267 ev_tstamp sleeptime = 0.; 3445 ev_tstamp sleeptime = 0.;
2268 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
2269 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3458 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2270 { 3459 {
2271 /* remember old timestamp for io_blocktime calculation */
2272 ev_tstamp prev_mn_now = mn_now;
2273
2274 /* update time to cancel out callback processing overhead */
2275 time_update (EV_A_ 1e100);
2276
2277 waittime = MAX_BLOCKTIME; 3460 waittime = MAX_BLOCKTIME;
2278 3461
2279 if (timercnt) 3462 if (timercnt)
2280 { 3463 {
2281 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3464 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2282 if (waittime > to) waittime = to; 3465 if (waittime > to) waittime = to;
2283 } 3466 }
2284 3467
2285#if EV_PERIODIC_ENABLE 3468#if EV_PERIODIC_ENABLE
2286 if (periodiccnt) 3469 if (periodiccnt)
2287 { 3470 {
2288 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3471 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2289 if (waittime > to) waittime = to; 3472 if (waittime > to) waittime = to;
2290 } 3473 }
2291#endif 3474#endif
2292 3475
2293 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3476 /* don't let timeouts decrease the waittime below timeout_blocktime */
2294 if (expect_false (waittime < timeout_blocktime)) 3477 if (expect_false (waittime < timeout_blocktime))
2295 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;
2296 3484
2297 /* extra check because io_blocktime is commonly 0 */ 3485 /* extra check because io_blocktime is commonly 0 */
2298 if (expect_false (io_blocktime)) 3486 if (expect_false (io_blocktime))
2299 { 3487 {
2300 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3488 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2301 3489
2302 if (sleeptime > waittime - backend_fudge) 3490 if (sleeptime > waittime - backend_mintime)
2303 sleeptime = waittime - backend_fudge; 3491 sleeptime = waittime - backend_mintime;
2304 3492
2305 if (expect_true (sleeptime > 0.)) 3493 if (expect_true (sleeptime > 0.))
2306 { 3494 {
2307 ev_sleep (sleeptime); 3495 ev_sleep (sleeptime);
2308 waittime -= sleeptime; 3496 waittime -= sleeptime;
2309 } 3497 }
2310 } 3498 }
2311 } 3499 }
2312 3500
2313#if EV_MINIMAL < 2 3501#if EV_FEATURE_API
2314 ++loop_count; 3502 ++loop_count;
2315#endif 3503#endif
2316 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3504 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2317 backend_poll (EV_A_ waittime); 3505 backend_poll (EV_A_ waittime);
2318 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
2319 3517
2320 /* update ev_rt_now, do magic */ 3518 /* update ev_rt_now, do magic */
2321 time_update (EV_A_ waittime + sleeptime); 3519 time_update (EV_A_ waittime + sleeptime);
2322 } 3520 }
2323 3521
… …
2330#if EV_IDLE_ENABLE 3528#if EV_IDLE_ENABLE
2331 /* queue idle watchers unless other events are pending */ 3529 /* queue idle watchers unless other events are pending */
2332 idle_reify (EV_A); 3530 idle_reify (EV_A);
2333#endif 3531#endif
2334 3532
3533#if EV_CHECK_ENABLE
2335 /* queue check watchers, to be executed first */ 3534 /* queue check watchers, to be executed first */
2336 if (expect_false (checkcnt)) 3535 if (expect_false (checkcnt))
2337 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3536 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3537#endif
2338 3538
2339 EV_INVOKE_PENDING; 3539 EV_INVOKE_PENDING;
2340 } 3540 }
2341 while (expect_true ( 3541 while (expect_true (
2342 activecnt 3542 activecnt
2343 && !loop_done 3543 && !loop_done
2344 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3544 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2345 )); 3545 ));
2346 3546
2347 if (loop_done == EVUNLOOP_ONE) 3547 if (loop_done == EVBREAK_ONE)
2348 loop_done = EVUNLOOP_CANCEL; 3548 loop_done = EVBREAK_CANCEL;
2349 3549
2350#if EV_MINIMAL < 2 3550#if EV_FEATURE_API
2351 --loop_depth; 3551 --loop_depth;
2352#endif 3552#endif
3553
3554 return activecnt;
2353} 3555}
2354 3556
2355void 3557void
2356ev_unloop (EV_P_ int how) 3558ev_break (EV_P_ int how) EV_THROW
2357{ 3559{
2358 loop_done = how; 3560 loop_done = how;
2359} 3561}
2360 3562
2361void 3563void
2362ev_ref (EV_P) 3564ev_ref (EV_P) EV_THROW
2363{ 3565{
2364 ++activecnt; 3566 ++activecnt;
2365} 3567}
2366 3568
2367void 3569void
2368ev_unref (EV_P) 3570ev_unref (EV_P) EV_THROW
2369{ 3571{
2370 --activecnt; 3572 --activecnt;
2371} 3573}
2372 3574
2373void 3575void
2374ev_now_update (EV_P) 3576ev_now_update (EV_P) EV_THROW
2375{ 3577{
2376 time_update (EV_A_ 1e100); 3578 time_update (EV_A_ 1e100);
2377} 3579}
2378 3580
2379void 3581void
2380ev_suspend (EV_P) 3582ev_suspend (EV_P) EV_THROW
2381{ 3583{
2382 ev_now_update (EV_A); 3584 ev_now_update (EV_A);
2383} 3585}
2384 3586
2385void 3587void
2386ev_resume (EV_P) 3588ev_resume (EV_P) EV_THROW
2387{ 3589{
2388 ev_tstamp mn_prev = mn_now; 3590 ev_tstamp mn_prev = mn_now;
2389 3591
2390 ev_now_update (EV_A); 3592 ev_now_update (EV_A);
2391 timers_reschedule (EV_A_ mn_now - mn_prev); 3593 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2430 w->pending = 0; 3632 w->pending = 0;
2431 } 3633 }
2432} 3634}
2433 3635
2434int 3636int
2435ev_clear_pending (EV_P_ void *w) 3637ev_clear_pending (EV_P_ void *w) EV_THROW
2436{ 3638{
2437 W w_ = (W)w; 3639 W w_ = (W)w;
2438 int pending = w_->pending; 3640 int pending = w_->pending;
2439 3641
2440 if (expect_true (pending)) 3642 if (expect_true (pending))
… …
2473} 3675}
2474 3676
2475/*****************************************************************************/ 3677/*****************************************************************************/
2476 3678
2477void noinline 3679void noinline
2478ev_io_start (EV_P_ ev_io *w) 3680ev_io_start (EV_P_ ev_io *w) EV_THROW
2479{ 3681{
2480 int fd = w->fd; 3682 int fd = w->fd;
2481 3683
2482 if (expect_false (ev_is_active (w))) 3684 if (expect_false (ev_is_active (w)))
2483 return; 3685 return;
2484 3686
2485 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3687 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2486 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))));
2487 3689
2488 EV_FREQUENT_CHECK; 3690 EV_FREQUENT_CHECK;
2489 3691
2490 ev_start (EV_A_ (W)w, 1); 3692 ev_start (EV_A_ (W)w, 1);
2491 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3693 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2492 wlist_add (&anfds[fd].head, (WL)w); 3694 wlist_add (&anfds[fd].head, (WL)w);
2493 3695
3696 /* common bug, apparently */
3697 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3698
2494 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);
2495 w->events &= ~EV__IOFDSET; 3700 w->events &= ~EV__IOFDSET;
2496 3701
2497 EV_FREQUENT_CHECK; 3702 EV_FREQUENT_CHECK;
2498} 3703}
2499 3704
2500void noinline 3705void noinline
2501ev_io_stop (EV_P_ ev_io *w) 3706ev_io_stop (EV_P_ ev_io *w) EV_THROW
2502{ 3707{
2503 clear_pending (EV_A_ (W)w); 3708 clear_pending (EV_A_ (W)w);
2504 if (expect_false (!ev_is_active (w))) 3709 if (expect_false (!ev_is_active (w)))
2505 return; 3710 return;
2506 3711
… …
2509 EV_FREQUENT_CHECK; 3714 EV_FREQUENT_CHECK;
2510 3715
2511 wlist_del (&anfds[w->fd].head, (WL)w); 3716 wlist_del (&anfds[w->fd].head, (WL)w);
2512 ev_stop (EV_A_ (W)w); 3717 ev_stop (EV_A_ (W)w);
2513 3718
2514 fd_change (EV_A_ w->fd, 1); 3719 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2515 3720
2516 EV_FREQUENT_CHECK; 3721 EV_FREQUENT_CHECK;
2517} 3722}
2518 3723
2519void noinline 3724void noinline
2520ev_timer_start (EV_P_ ev_timer *w) 3725ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2521{ 3726{
2522 if (expect_false (ev_is_active (w))) 3727 if (expect_false (ev_is_active (w)))
2523 return; 3728 return;
2524 3729
2525 ev_at (w) += mn_now; 3730 ev_at (w) += mn_now;
… …
2539 3744
2540 /*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));*/
2541} 3746}
2542 3747
2543void noinline 3748void noinline
2544ev_timer_stop (EV_P_ ev_timer *w) 3749ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2545{ 3750{
2546 clear_pending (EV_A_ (W)w); 3751 clear_pending (EV_A_ (W)w);
2547 if (expect_false (!ev_is_active (w))) 3752 if (expect_false (!ev_is_active (w)))
2548 return; 3753 return;
2549 3754
… …
2561 timers [active] = timers [timercnt + HEAP0]; 3766 timers [active] = timers [timercnt + HEAP0];
2562 adjustheap (timers, timercnt, active); 3767 adjustheap (timers, timercnt, active);
2563 } 3768 }
2564 } 3769 }
2565 3770
2566 EV_FREQUENT_CHECK;
2567
2568 ev_at (w) -= mn_now; 3771 ev_at (w) -= mn_now;
2569 3772
2570 ev_stop (EV_A_ (W)w); 3773 ev_stop (EV_A_ (W)w);
3774
3775 EV_FREQUENT_CHECK;
2571} 3776}
2572 3777
2573void noinline 3778void noinline
2574ev_timer_again (EV_P_ ev_timer *w) 3779ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2575{ 3780{
2576 EV_FREQUENT_CHECK; 3781 EV_FREQUENT_CHECK;
3782
3783 clear_pending (EV_A_ (W)w);
2577 3784
2578 if (ev_is_active (w)) 3785 if (ev_is_active (w))
2579 { 3786 {
2580 if (w->repeat) 3787 if (w->repeat)
2581 { 3788 {
… …
2594 3801
2595 EV_FREQUENT_CHECK; 3802 EV_FREQUENT_CHECK;
2596} 3803}
2597 3804
2598ev_tstamp 3805ev_tstamp
2599ev_timer_remaining (EV_P_ ev_timer *w) 3806ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2600{ 3807{
2601 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3808 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2602} 3809}
2603 3810
2604#if EV_PERIODIC_ENABLE 3811#if EV_PERIODIC_ENABLE
2605void noinline 3812void noinline
2606ev_periodic_start (EV_P_ ev_periodic *w) 3813ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2607{ 3814{
2608 if (expect_false (ev_is_active (w))) 3815 if (expect_false (ev_is_active (w)))
2609 return; 3816 return;
2610 3817
2611 if (w->reschedule_cb) 3818 if (w->reschedule_cb)
2612 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3819 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2613 else if (w->interval) 3820 else if (w->interval)
2614 { 3821 {
2615 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.));
2616 /* this formula differs from the one in periodic_reify because we do not always round up */ 3823 periodic_recalc (EV_A_ w);
2617 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2618 } 3824 }
2619 else 3825 else
2620 ev_at (w) = w->offset; 3826 ev_at (w) = w->offset;
2621 3827
2622 EV_FREQUENT_CHECK; 3828 EV_FREQUENT_CHECK;
… …
2632 3838
2633 /*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));*/
2634} 3840}
2635 3841
2636void noinline 3842void noinline
2637ev_periodic_stop (EV_P_ ev_periodic *w) 3843ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2638{ 3844{
2639 clear_pending (EV_A_ (W)w); 3845 clear_pending (EV_A_ (W)w);
2640 if (expect_false (!ev_is_active (w))) 3846 if (expect_false (!ev_is_active (w)))
2641 return; 3847 return;
2642 3848
… …
2654 periodics [active] = periodics [periodiccnt + HEAP0]; 3860 periodics [active] = periodics [periodiccnt + HEAP0];
2655 adjustheap (periodics, periodiccnt, active); 3861 adjustheap (periodics, periodiccnt, active);
2656 } 3862 }
2657 } 3863 }
2658 3864
2659 EV_FREQUENT_CHECK;
2660
2661 ev_stop (EV_A_ (W)w); 3865 ev_stop (EV_A_ (W)w);
3866
3867 EV_FREQUENT_CHECK;
2662} 3868}
2663 3869
2664void noinline 3870void noinline
2665ev_periodic_again (EV_P_ ev_periodic *w) 3871ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2666{ 3872{
2667 /* TODO: use adjustheap and recalculation */ 3873 /* TODO: use adjustheap and recalculation */
2668 ev_periodic_stop (EV_A_ w); 3874 ev_periodic_stop (EV_A_ w);
2669 ev_periodic_start (EV_A_ w); 3875 ev_periodic_start (EV_A_ w);
2670} 3876}
… …
2672 3878
2673#ifndef SA_RESTART 3879#ifndef SA_RESTART
2674# define SA_RESTART 0 3880# define SA_RESTART 0
2675#endif 3881#endif
2676 3882
3883#if EV_SIGNAL_ENABLE
3884
2677void noinline 3885void noinline
2678ev_signal_start (EV_P_ ev_signal *w) 3886ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2679{ 3887{
2680 if (expect_false (ev_is_active (w))) 3888 if (expect_false (ev_is_active (w)))
2681 return; 3889 return;
2682 3890
2683 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));
… …
2685#if EV_MULTIPLICITY 3893#if EV_MULTIPLICITY
2686 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",
2687 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3895 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2688 3896
2689 signals [w->signum - 1].loop = EV_A; 3897 signals [w->signum - 1].loop = EV_A;
3898 ECB_MEMORY_FENCE_RELEASE;
2690#endif 3899#endif
2691 3900
2692 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
2693 3902
2694#if EV_USE_SIGNALFD 3903#if EV_USE_SIGNALFD
… …
2727 if (!((WL)w)->next) 3936 if (!((WL)w)->next)
2728# if EV_USE_SIGNALFD 3937# if EV_USE_SIGNALFD
2729 if (sigfd < 0) /*TODO*/ 3938 if (sigfd < 0) /*TODO*/
2730# endif 3939# endif
2731 { 3940 {
2732# if _WIN32 3941# ifdef _WIN32
3942 evpipe_init (EV_A);
3943
2733 signal (w->signum, ev_sighandler); 3944 signal (w->signum, ev_sighandler);
2734# else 3945# else
2735 struct sigaction sa; 3946 struct sigaction sa;
2736 3947
2737 evpipe_init (EV_A); 3948 evpipe_init (EV_A);
… …
2739 sa.sa_handler = ev_sighandler; 3950 sa.sa_handler = ev_sighandler;
2740 sigfillset (&sa.sa_mask); 3951 sigfillset (&sa.sa_mask);
2741 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 */
2742 sigaction (w->signum, &sa, 0); 3953 sigaction (w->signum, &sa, 0);
2743 3954
3955 if (origflags & EVFLAG_NOSIGMASK)
3956 {
2744 sigemptyset (&sa.sa_mask); 3957 sigemptyset (&sa.sa_mask);
2745 sigaddset (&sa.sa_mask, w->signum); 3958 sigaddset (&sa.sa_mask, w->signum);
2746 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3959 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3960 }
2747#endif 3961#endif
2748 } 3962 }
2749 3963
2750 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
2751} 3965}
2752 3966
2753void noinline 3967void noinline
2754ev_signal_stop (EV_P_ ev_signal *w) 3968ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2755{ 3969{
2756 clear_pending (EV_A_ (W)w); 3970 clear_pending (EV_A_ (W)w);
2757 if (expect_false (!ev_is_active (w))) 3971 if (expect_false (!ev_is_active (w)))
2758 return; 3972 return;
2759 3973
… …
2768 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3982 signals [w->signum - 1].loop = 0; /* unattach from signal */
2769#endif 3983#endif
2770#if EV_USE_SIGNALFD 3984#if EV_USE_SIGNALFD
2771 if (sigfd >= 0) 3985 if (sigfd >= 0)
2772 { 3986 {
2773 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3987 sigset_t ss;
3988
3989 sigemptyset (&ss);
3990 sigaddset (&ss, w->signum);
2774 sigdelset (&sigfd_set, w->signum); 3991 sigdelset (&sigfd_set, w->signum);
3992
2775 signalfd (sigfd, &sigfd_set, 0); 3993 signalfd (sigfd, &sigfd_set, 0);
2776 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3994 sigprocmask (SIG_UNBLOCK, &ss, 0);
2777 /*TODO: maybe unblock signal? */
2778 } 3995 }
2779 else 3996 else
2780#endif 3997#endif
2781 signal (w->signum, SIG_DFL); 3998 signal (w->signum, SIG_DFL);
2782 } 3999 }
2783 4000
2784 EV_FREQUENT_CHECK; 4001 EV_FREQUENT_CHECK;
2785} 4002}
2786 4003
4004#endif
4005
4006#if EV_CHILD_ENABLE
4007
2787void 4008void
2788ev_child_start (EV_P_ ev_child *w) 4009ev_child_start (EV_P_ ev_child *w) EV_THROW
2789{ 4010{
2790#if EV_MULTIPLICITY 4011#if EV_MULTIPLICITY
2791 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));
2792#endif 4013#endif
2793 if (expect_false (ev_is_active (w))) 4014 if (expect_false (ev_is_active (w)))
2794 return; 4015 return;
2795 4016
2796 EV_FREQUENT_CHECK; 4017 EV_FREQUENT_CHECK;
2797 4018
2798 ev_start (EV_A_ (W)w, 1); 4019 ev_start (EV_A_ (W)w, 1);
2799 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4020 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2800 4021
2801 EV_FREQUENT_CHECK; 4022 EV_FREQUENT_CHECK;
2802} 4023}
2803 4024
2804void 4025void
2805ev_child_stop (EV_P_ ev_child *w) 4026ev_child_stop (EV_P_ ev_child *w) EV_THROW
2806{ 4027{
2807 clear_pending (EV_A_ (W)w); 4028 clear_pending (EV_A_ (W)w);
2808 if (expect_false (!ev_is_active (w))) 4029 if (expect_false (!ev_is_active (w)))
2809 return; 4030 return;
2810 4031
2811 EV_FREQUENT_CHECK; 4032 EV_FREQUENT_CHECK;
2812 4033
2813 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4034 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2814 ev_stop (EV_A_ (W)w); 4035 ev_stop (EV_A_ (W)w);
2815 4036
2816 EV_FREQUENT_CHECK; 4037 EV_FREQUENT_CHECK;
2817} 4038}
4039
4040#endif
2818 4041
2819#if EV_STAT_ENABLE 4042#if EV_STAT_ENABLE
2820 4043
2821# ifdef _WIN32 4044# ifdef _WIN32
2822# undef lstat 4045# undef lstat
… …
2828#define MIN_STAT_INTERVAL 0.1074891 4051#define MIN_STAT_INTERVAL 0.1074891
2829 4052
2830static 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);
2831 4054
2832#if EV_USE_INOTIFY 4055#if EV_USE_INOTIFY
2833# 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)
2834 4059
2835static void noinline 4060static void noinline
2836infy_add (EV_P_ ev_stat *w) 4061infy_add (EV_P_ ev_stat *w)
2837{ 4062{
2838 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);
2839 4067
2840 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 */
2841 { 4094 }
4095 else
4096 {
4097 /* can't use inotify, continue to stat */
2842 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4098 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2843 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2844 4099
2845 /* monitor some parent directory for speedup hints */ 4100 /* if path is not there, monitor some parent directory for speedup hints */
2846 /* 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, */
2847 /* but an efficiency issue only */ 4102 /* but an efficiency issue only */
2848 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4103 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2849 { 4104 {
2850 char path [4096]; 4105 char path [4096];
… …
2860 if (!pend || pend == path) 4115 if (!pend || pend == path)
2861 break; 4116 break;
2862 4117
2863 *pend = 0; 4118 *pend = 0;
2864 w->wd = inotify_add_watch (fs_fd, path, mask); 4119 w->wd = inotify_add_watch (fs_fd, path, mask);
2865 } 4120 }
2866 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4121 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2867 } 4122 }
2868 } 4123 }
2869 4124
2870 if (w->wd >= 0) 4125 if (w->wd >= 0)
2871 {
2872 struct statfs sfs;
2873
2874 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);
2875 4127
2876 /* now local changes will be tracked by inotify, but remote changes won't */ 4128 /* now re-arm timer, if required */
2877 /* unless the filesystem it known to be local, we therefore still poll */ 4129 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2878 /* also do poll on <2.6.25, but with normal frequency */
2879
2880 if (fs_2625 && !statfs (w->path, &sfs))
2881 if (sfs.f_type == 0x1373 /* devfs */
2882 || sfs.f_type == 0xEF53 /* ext2/3 */
2883 || sfs.f_type == 0x3153464a /* jfs */
2884 || sfs.f_type == 0x52654973 /* reiser3 */
2885 || sfs.f_type == 0x01021994 /* tempfs */
2886 || sfs.f_type == 0x58465342 /* xfs */)
2887 return;
2888
2889 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2890 ev_timer_again (EV_A_ &w->timer); 4130 ev_timer_again (EV_A_ &w->timer);
2891 } 4131 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2892} 4132}
2893 4133
2894static void noinline 4134static void noinline
2895infy_del (EV_P_ ev_stat *w) 4135infy_del (EV_P_ ev_stat *w)
2896{ 4136{
… …
2899 4139
2900 if (wd < 0) 4140 if (wd < 0)
2901 return; 4141 return;
2902 4142
2903 w->wd = -2; 4143 w->wd = -2;
2904 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4144 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2905 wlist_del (&fs_hash [slot].head, (WL)w); 4145 wlist_del (&fs_hash [slot].head, (WL)w);
2906 4146
2907 /* remove this watcher, if others are watching it, they will rearm */ 4147 /* remove this watcher, if others are watching it, they will rearm */
2908 inotify_rm_watch (fs_fd, wd); 4148 inotify_rm_watch (fs_fd, wd);
2909} 4149}
… …
2911static void noinline 4151static void noinline
2912infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4152infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2913{ 4153{
2914 if (slot < 0) 4154 if (slot < 0)
2915 /* overflow, need to check for all hash slots */ 4155 /* overflow, need to check for all hash slots */
2916 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4156 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2917 infy_wd (EV_A_ slot, wd, ev); 4157 infy_wd (EV_A_ slot, wd, ev);
2918 else 4158 else
2919 { 4159 {
2920 WL w_; 4160 WL w_;
2921 4161
2922 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4162 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2923 { 4163 {
2924 ev_stat *w = (ev_stat *)w_; 4164 ev_stat *w = (ev_stat *)w_;
2925 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 */
2926 4166
2927 if (w->wd == wd || wd == -1) 4167 if (w->wd == wd || wd == -1)
2928 { 4168 {
2929 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4169 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2930 { 4170 {
2931 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);
2932 w->wd = -1; 4172 w->wd = -1;
2933 infy_add (EV_A_ w); /* re-add, no matter what */ 4173 infy_add (EV_A_ w); /* re-add, no matter what */
2934 } 4174 }
2935 4175
2936 stat_timer_cb (EV_A_ &w->timer, 0); 4176 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2941 4181
2942static void 4182static void
2943infy_cb (EV_P_ ev_io *w, int revents) 4183infy_cb (EV_P_ ev_io *w, int revents)
2944{ 4184{
2945 char buf [EV_INOTIFY_BUFSIZE]; 4185 char buf [EV_INOTIFY_BUFSIZE];
2946 struct inotify_event *ev = (struct inotify_event *)buf;
2947 int ofs; 4186 int ofs;
2948 int len = read (fs_fd, buf, sizeof (buf)); 4187 int len = read (fs_fd, buf, sizeof (buf));
2949 4188
2950 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);
2951 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 }
2952} 4195}
2953 4196
2954inline_size void 4197inline_size void ecb_cold
2955check_2625 (EV_P) 4198ev_check_2625 (EV_P)
2956{ 4199{
2957 /* kernels < 2.6.25 are borked 4200 /* kernels < 2.6.25 are borked
2958 * 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
2959 */ 4202 */
2960 struct utsname buf; 4203 if (ev_linux_version () < 0x020619)
2961 int major, minor, micro;
2962
2963 if (uname (&buf))
2964 return; 4204 return;
2965 4205
2966 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2967 return;
2968
2969 if (major < 2
2970 || (major == 2 && minor < 6)
2971 || (major == 2 && minor == 6 && micro < 25))
2972 return;
2973
2974 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 ();
2975} 4218}
2976 4219
2977inline_size void 4220inline_size void
2978infy_init (EV_P) 4221infy_init (EV_P)
2979{ 4222{
2980 if (fs_fd != -2) 4223 if (fs_fd != -2)
2981 return; 4224 return;
2982 4225
2983 fs_fd = -1; 4226 fs_fd = -1;
2984 4227
2985 check_2625 (EV_A); 4228 ev_check_2625 (EV_A);
2986 4229
2987 fs_fd = inotify_init (); 4230 fs_fd = infy_newfd ();
2988 4231
2989 if (fs_fd >= 0) 4232 if (fs_fd >= 0)
2990 { 4233 {
4234 fd_intern (fs_fd);
2991 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4235 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2992 ev_set_priority (&fs_w, EV_MAXPRI); 4236 ev_set_priority (&fs_w, EV_MAXPRI);
2993 ev_io_start (EV_A_ &fs_w); 4237 ev_io_start (EV_A_ &fs_w);
4238 ev_unref (EV_A);
2994 } 4239 }
2995} 4240}
2996 4241
2997inline_size void 4242inline_size void
2998infy_fork (EV_P) 4243infy_fork (EV_P)
… …
3000 int slot; 4245 int slot;
3001 4246
3002 if (fs_fd < 0) 4247 if (fs_fd < 0)
3003 return; 4248 return;
3004 4249
4250 ev_ref (EV_A);
4251 ev_io_stop (EV_A_ &fs_w);
3005 close (fs_fd); 4252 close (fs_fd);
3006 fs_fd = inotify_init (); 4253 fs_fd = infy_newfd ();
3007 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
3008 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4263 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3009 { 4264 {
3010 WL w_ = fs_hash [slot].head; 4265 WL w_ = fs_hash [slot].head;
3011 fs_hash [slot].head = 0; 4266 fs_hash [slot].head = 0;
3012 4267
3013 while (w_) 4268 while (w_)
… …
3018 w->wd = -1; 4273 w->wd = -1;
3019 4274
3020 if (fs_fd >= 0) 4275 if (fs_fd >= 0)
3021 infy_add (EV_A_ w); /* re-add, no matter what */ 4276 infy_add (EV_A_ w); /* re-add, no matter what */
3022 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);
3023 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 }
3024 } 4284 }
3025 } 4285 }
3026} 4286}
3027 4287
3028#endif 4288#endif
… …
3032#else 4292#else
3033# define EV_LSTAT(p,b) lstat (p, b) 4293# define EV_LSTAT(p,b) lstat (p, b)
3034#endif 4294#endif
3035 4295
3036void 4296void
3037ev_stat_stat (EV_P_ ev_stat *w) 4297ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3038{ 4298{
3039 if (lstat (w->path, &w->attr) < 0) 4299 if (lstat (w->path, &w->attr) < 0)
3040 w->attr.st_nlink = 0; 4300 w->attr.st_nlink = 0;
3041 else if (!w->attr.st_nlink) 4301 else if (!w->attr.st_nlink)
3042 w->attr.st_nlink = 1; 4302 w->attr.st_nlink = 1;
… …
3045static void noinline 4305static void noinline
3046stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4306stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3047{ 4307{
3048 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4308 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3049 4309
3050 /* we copy this here each the time so that */ 4310 ev_statdata prev = w->attr;
3051 /* prev has the old value when the callback gets invoked */
3052 w->prev = w->attr;
3053 ev_stat_stat (EV_A_ w); 4311 ev_stat_stat (EV_A_ w);
3054 4312
3055 /* 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 */
3056 if ( 4314 if (
3057 w->prev.st_dev != w->attr.st_dev 4315 prev.st_dev != w->attr.st_dev
3058 || w->prev.st_ino != w->attr.st_ino 4316 || prev.st_ino != w->attr.st_ino
3059 || w->prev.st_mode != w->attr.st_mode 4317 || prev.st_mode != w->attr.st_mode
3060 || w->prev.st_nlink != w->attr.st_nlink 4318 || prev.st_nlink != w->attr.st_nlink
3061 || w->prev.st_uid != w->attr.st_uid 4319 || prev.st_uid != w->attr.st_uid
3062 || w->prev.st_gid != w->attr.st_gid 4320 || prev.st_gid != w->attr.st_gid
3063 || w->prev.st_rdev != w->attr.st_rdev 4321 || prev.st_rdev != w->attr.st_rdev
3064 || w->prev.st_size != w->attr.st_size 4322 || prev.st_size != w->attr.st_size
3065 || w->prev.st_atime != w->attr.st_atime 4323 || prev.st_atime != w->attr.st_atime
3066 || w->prev.st_mtime != w->attr.st_mtime 4324 || prev.st_mtime != w->attr.st_mtime
3067 || w->prev.st_ctime != w->attr.st_ctime 4325 || prev.st_ctime != w->attr.st_ctime
3068 ) { 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
3069 #if EV_USE_INOTIFY 4332 #if EV_USE_INOTIFY
3070 if (fs_fd >= 0) 4333 if (fs_fd >= 0)
3071 { 4334 {
3072 infy_del (EV_A_ w); 4335 infy_del (EV_A_ w);
3073 infy_add (EV_A_ w); 4336 infy_add (EV_A_ w);
… …
3078 ev_feed_event (EV_A_ w, EV_STAT); 4341 ev_feed_event (EV_A_ w, EV_STAT);
3079 } 4342 }
3080} 4343}
3081 4344
3082void 4345void
3083ev_stat_start (EV_P_ ev_stat *w) 4346ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3084{ 4347{
3085 if (expect_false (ev_is_active (w))) 4348 if (expect_false (ev_is_active (w)))
3086 return; 4349 return;
3087 4350
3088 ev_stat_stat (EV_A_ w); 4351 ev_stat_stat (EV_A_ w);
… …
3098 4361
3099 if (fs_fd >= 0) 4362 if (fs_fd >= 0)
3100 infy_add (EV_A_ w); 4363 infy_add (EV_A_ w);
3101 else 4364 else
3102#endif 4365#endif
4366 {
3103 ev_timer_again (EV_A_ &w->timer); 4367 ev_timer_again (EV_A_ &w->timer);
4368 ev_unref (EV_A);
4369 }
3104 4370
3105 ev_start (EV_A_ (W)w, 1); 4371 ev_start (EV_A_ (W)w, 1);
3106 4372
3107 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3108} 4374}
3109 4375
3110void 4376void
3111ev_stat_stop (EV_P_ ev_stat *w) 4377ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3112{ 4378{
3113 clear_pending (EV_A_ (W)w); 4379 clear_pending (EV_A_ (W)w);
3114 if (expect_false (!ev_is_active (w))) 4380 if (expect_false (!ev_is_active (w)))
3115 return; 4381 return;
3116 4382
3117 EV_FREQUENT_CHECK; 4383 EV_FREQUENT_CHECK;
3118 4384
3119#if EV_USE_INOTIFY 4385#if EV_USE_INOTIFY
3120 infy_del (EV_A_ w); 4386 infy_del (EV_A_ w);
3121#endif 4387#endif
4388
4389 if (ev_is_active (&w->timer))
4390 {
4391 ev_ref (EV_A);
3122 ev_timer_stop (EV_A_ &w->timer); 4392 ev_timer_stop (EV_A_ &w->timer);
4393 }
3123 4394
3124 ev_stop (EV_A_ (W)w); 4395 ev_stop (EV_A_ (W)w);
3125 4396
3126 EV_FREQUENT_CHECK; 4397 EV_FREQUENT_CHECK;
3127} 4398}
3128#endif 4399#endif
3129 4400
3130#if EV_IDLE_ENABLE 4401#if EV_IDLE_ENABLE
3131void 4402void
3132ev_idle_start (EV_P_ ev_idle *w) 4403ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3133{ 4404{
3134 if (expect_false (ev_is_active (w))) 4405 if (expect_false (ev_is_active (w)))
3135 return; 4406 return;
3136 4407
3137 pri_adjust (EV_A_ (W)w); 4408 pri_adjust (EV_A_ (W)w);
… …
3150 4421
3151 EV_FREQUENT_CHECK; 4422 EV_FREQUENT_CHECK;
3152} 4423}
3153 4424
3154void 4425void
3155ev_idle_stop (EV_P_ ev_idle *w) 4426ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3156{ 4427{
3157 clear_pending (EV_A_ (W)w); 4428 clear_pending (EV_A_ (W)w);
3158 if (expect_false (!ev_is_active (w))) 4429 if (expect_false (!ev_is_active (w)))
3159 return; 4430 return;
3160 4431
… …
3172 4443
3173 EV_FREQUENT_CHECK; 4444 EV_FREQUENT_CHECK;
3174} 4445}
3175#endif 4446#endif
3176 4447
4448#if EV_PREPARE_ENABLE
3177void 4449void
3178ev_prepare_start (EV_P_ ev_prepare *w) 4450ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3179{ 4451{
3180 if (expect_false (ev_is_active (w))) 4452 if (expect_false (ev_is_active (w)))
3181 return; 4453 return;
3182 4454
3183 EV_FREQUENT_CHECK; 4455 EV_FREQUENT_CHECK;
… …
3188 4460
3189 EV_FREQUENT_CHECK; 4461 EV_FREQUENT_CHECK;
3190} 4462}
3191 4463
3192void 4464void
3193ev_prepare_stop (EV_P_ ev_prepare *w) 4465ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3194{ 4466{
3195 clear_pending (EV_A_ (W)w); 4467 clear_pending (EV_A_ (W)w);
3196 if (expect_false (!ev_is_active (w))) 4468 if (expect_false (!ev_is_active (w)))
3197 return; 4469 return;
3198 4470
… …
3207 4479
3208 ev_stop (EV_A_ (W)w); 4480 ev_stop (EV_A_ (W)w);
3209 4481
3210 EV_FREQUENT_CHECK; 4482 EV_FREQUENT_CHECK;
3211} 4483}
4484#endif
3212 4485
4486#if EV_CHECK_ENABLE
3213void 4487void
3214ev_check_start (EV_P_ ev_check *w) 4488ev_check_start (EV_P_ ev_check *w) EV_THROW
3215{ 4489{
3216 if (expect_false (ev_is_active (w))) 4490 if (expect_false (ev_is_active (w)))
3217 return; 4491 return;
3218 4492
3219 EV_FREQUENT_CHECK; 4493 EV_FREQUENT_CHECK;
… …
3224 4498
3225 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
3226} 4500}
3227 4501
3228void 4502void
3229ev_check_stop (EV_P_ ev_check *w) 4503ev_check_stop (EV_P_ ev_check *w) EV_THROW
3230{ 4504{
3231 clear_pending (EV_A_ (W)w); 4505 clear_pending (EV_A_ (W)w);
3232 if (expect_false (!ev_is_active (w))) 4506 if (expect_false (!ev_is_active (w)))
3233 return; 4507 return;
3234 4508
… …
3243 4517
3244 ev_stop (EV_A_ (W)w); 4518 ev_stop (EV_A_ (W)w);
3245 4519
3246 EV_FREQUENT_CHECK; 4520 EV_FREQUENT_CHECK;
3247} 4521}
4522#endif
3248 4523
3249#if EV_EMBED_ENABLE 4524#if EV_EMBED_ENABLE
3250void noinline 4525void noinline
3251ev_embed_sweep (EV_P_ ev_embed *w) 4526ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3252{ 4527{
3253 ev_loop (w->other, EVLOOP_NONBLOCK); 4528 ev_run (w->other, EVRUN_NOWAIT);
3254} 4529}
3255 4530
3256static void 4531static void
3257embed_io_cb (EV_P_ ev_io *io, int revents) 4532embed_io_cb (EV_P_ ev_io *io, int revents)
3258{ 4533{
3259 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4534 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3260 4535
3261 if (ev_cb (w)) 4536 if (ev_cb (w))
3262 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4537 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3263 else 4538 else
3264 ev_loop (w->other, EVLOOP_NONBLOCK); 4539 ev_run (w->other, EVRUN_NOWAIT);
3265} 4540}
3266 4541
3267static void 4542static void
3268embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4543embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3269{ 4544{
… …
3273 EV_P = w->other; 4548 EV_P = w->other;
3274 4549
3275 while (fdchangecnt) 4550 while (fdchangecnt)
3276 { 4551 {
3277 fd_reify (EV_A); 4552 fd_reify (EV_A);
3278 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4553 ev_run (EV_A_ EVRUN_NOWAIT);
3279 } 4554 }
3280 } 4555 }
3281} 4556}
3282 4557
3283static void 4558static void
… …
3289 4564
3290 { 4565 {
3291 EV_P = w->other; 4566 EV_P = w->other;
3292 4567
3293 ev_loop_fork (EV_A); 4568 ev_loop_fork (EV_A);
3294 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4569 ev_run (EV_A_ EVRUN_NOWAIT);
3295 } 4570 }
3296 4571
3297 ev_embed_start (EV_A_ w); 4572 ev_embed_start (EV_A_ w);
3298} 4573}
3299 4574
… …
3304 ev_idle_stop (EV_A_ idle); 4579 ev_idle_stop (EV_A_ idle);
3305} 4580}
3306#endif 4581#endif
3307 4582
3308void 4583void
3309ev_embed_start (EV_P_ ev_embed *w) 4584ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3310{ 4585{
3311 if (expect_false (ev_is_active (w))) 4586 if (expect_false (ev_is_active (w)))
3312 return; 4587 return;
3313 4588
3314 { 4589 {
… …
3335 4610
3336 EV_FREQUENT_CHECK; 4611 EV_FREQUENT_CHECK;
3337} 4612}
3338 4613
3339void 4614void
3340ev_embed_stop (EV_P_ ev_embed *w) 4615ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3341{ 4616{
3342 clear_pending (EV_A_ (W)w); 4617 clear_pending (EV_A_ (W)w);
3343 if (expect_false (!ev_is_active (w))) 4618 if (expect_false (!ev_is_active (w)))
3344 return; 4619 return;
3345 4620
… …
3347 4622
3348 ev_io_stop (EV_A_ &w->io); 4623 ev_io_stop (EV_A_ &w->io);
3349 ev_prepare_stop (EV_A_ &w->prepare); 4624 ev_prepare_stop (EV_A_ &w->prepare);
3350 ev_fork_stop (EV_A_ &w->fork); 4625 ev_fork_stop (EV_A_ &w->fork);
3351 4626
4627 ev_stop (EV_A_ (W)w);
4628
3352 EV_FREQUENT_CHECK; 4629 EV_FREQUENT_CHECK;
3353} 4630}
3354#endif 4631#endif
3355 4632
3356#if EV_FORK_ENABLE 4633#if EV_FORK_ENABLE
3357void 4634void
3358ev_fork_start (EV_P_ ev_fork *w) 4635ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3359{ 4636{
3360 if (expect_false (ev_is_active (w))) 4637 if (expect_false (ev_is_active (w)))
3361 return; 4638 return;
3362 4639
3363 EV_FREQUENT_CHECK; 4640 EV_FREQUENT_CHECK;
… …
3368 4645
3369 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3370} 4647}
3371 4648
3372void 4649void
3373ev_fork_stop (EV_P_ ev_fork *w) 4650ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3374{ 4651{
3375 clear_pending (EV_A_ (W)w); 4652 clear_pending (EV_A_ (W)w);
3376 if (expect_false (!ev_is_active (w))) 4653 if (expect_false (!ev_is_active (w)))
3377 return; 4654 return;
3378 4655
… …
3389 4666
3390 EV_FREQUENT_CHECK; 4667 EV_FREQUENT_CHECK;
3391} 4668}
3392#endif 4669#endif
3393 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
3394#if EV_ASYNC_ENABLE 4712#if EV_ASYNC_ENABLE
3395void 4713void
3396ev_async_start (EV_P_ ev_async *w) 4714ev_async_start (EV_P_ ev_async *w) EV_THROW
3397{ 4715{
3398 if (expect_false (ev_is_active (w))) 4716 if (expect_false (ev_is_active (w)))
3399 return; 4717 return;
4718
4719 w->sent = 0;
3400 4720
3401 evpipe_init (EV_A); 4721 evpipe_init (EV_A);
3402 4722
3403 EV_FREQUENT_CHECK; 4723 EV_FREQUENT_CHECK;
3404 4724
… …
3408 4728
3409 EV_FREQUENT_CHECK; 4729 EV_FREQUENT_CHECK;
3410} 4730}
3411 4731
3412void 4732void
3413ev_async_stop (EV_P_ ev_async *w) 4733ev_async_stop (EV_P_ ev_async *w) EV_THROW
3414{ 4734{
3415 clear_pending (EV_A_ (W)w); 4735 clear_pending (EV_A_ (W)w);
3416 if (expect_false (!ev_is_active (w))) 4736 if (expect_false (!ev_is_active (w)))
3417 return; 4737 return;
3418 4738
… …
3429 4749
3430 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
3431} 4751}
3432 4752
3433void 4753void
3434ev_async_send (EV_P_ ev_async *w) 4754ev_async_send (EV_P_ ev_async *w) EV_THROW
3435{ 4755{
3436 w->sent = 1; 4756 w->sent = 1;
3437 evpipe_write (EV_A_ &async_pending); 4757 evpipe_write (EV_A_ &async_pending);
3438} 4758}
3439#endif 4759#endif
… …
3476 4796
3477 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));
3478} 4798}
3479 4799
3480void 4800void
3481ev_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
3482{ 4802{
3483 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));
3484 4804
3485 if (expect_false (!once)) 4805 if (expect_false (!once))
3486 { 4806 {
3487 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4807 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3488 return; 4808 return;
3489 } 4809 }
3490 4810
3491 once->cb = cb; 4811 once->cb = cb;
3492 once->arg = arg; 4812 once->arg = arg;
… …
3507} 4827}
3508 4828
3509/*****************************************************************************/ 4829/*****************************************************************************/
3510 4830
3511#if EV_WALK_ENABLE 4831#if EV_WALK_ENABLE
3512void 4832void ecb_cold
3513ev_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
3514{ 4834{
3515 int i, j; 4835 int i, j;
3516 ev_watcher_list *wl, *wn; 4836 ev_watcher_list *wl, *wn;
3517 4837
3518 if (types & (EV_IO | EV_EMBED)) 4838 if (types & (EV_IO | EV_EMBED))
… …
3561 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4881 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3562#endif 4882#endif
3563 4883
3564#if EV_IDLE_ENABLE 4884#if EV_IDLE_ENABLE
3565 if (types & EV_IDLE) 4885 if (types & EV_IDLE)
3566 for (j = NUMPRI; i--; ) 4886 for (j = NUMPRI; j--; )
3567 for (i = idlecnt [j]; i--; ) 4887 for (i = idlecnt [j]; i--; )
3568 cb (EV_A_ EV_IDLE, idles [j][i]); 4888 cb (EV_A_ EV_IDLE, idles [j][i]);
3569#endif 4889#endif
3570 4890
3571#if EV_FORK_ENABLE 4891#if EV_FORK_ENABLE
… …
3579 if (types & EV_ASYNC) 4899 if (types & EV_ASYNC)
3580 for (i = asynccnt; i--; ) 4900 for (i = asynccnt; i--; )
3581 cb (EV_A_ EV_ASYNC, asyncs [i]); 4901 cb (EV_A_ EV_ASYNC, asyncs [i]);
3582#endif 4902#endif
3583 4903
4904#if EV_PREPARE_ENABLE
3584 if (types & EV_PREPARE) 4905 if (types & EV_PREPARE)
3585 for (i = preparecnt; i--; ) 4906 for (i = preparecnt; i--; )
3586#if EV_EMBED_ENABLE 4907# if EV_EMBED_ENABLE
3587 if (ev_cb (prepares [i]) != embed_prepare_cb) 4908 if (ev_cb (prepares [i]) != embed_prepare_cb)
3588#endif 4909# endif
3589 cb (EV_A_ EV_PREPARE, prepares [i]); 4910 cb (EV_A_ EV_PREPARE, prepares [i]);
4911#endif
3590 4912
4913#if EV_CHECK_ENABLE
3591 if (types & EV_CHECK) 4914 if (types & EV_CHECK)
3592 for (i = checkcnt; i--; ) 4915 for (i = checkcnt; i--; )
3593 cb (EV_A_ EV_CHECK, checks [i]); 4916 cb (EV_A_ EV_CHECK, checks [i]);
4917#endif
3594 4918
4919#if EV_SIGNAL_ENABLE
3595 if (types & EV_SIGNAL) 4920 if (types & EV_SIGNAL)
3596 for (i = 0; i < EV_NSIG - 1; ++i) 4921 for (i = 0; i < EV_NSIG - 1; ++i)
3597 for (wl = signals [i].head; wl; ) 4922 for (wl = signals [i].head; wl; )
3598 { 4923 {
3599 wn = wl->next; 4924 wn = wl->next;
3600 cb (EV_A_ EV_SIGNAL, wl); 4925 cb (EV_A_ EV_SIGNAL, wl);
3601 wl = wn; 4926 wl = wn;
3602 } 4927 }
4928#endif
3603 4929
4930#if EV_CHILD_ENABLE
3604 if (types & EV_CHILD) 4931 if (types & EV_CHILD)
3605 for (i = EV_PID_HASHSIZE; i--; ) 4932 for (i = (EV_PID_HASHSIZE); i--; )
3606 for (wl = childs [i]; wl; ) 4933 for (wl = childs [i]; wl; )
3607 { 4934 {
3608 wn = wl->next; 4935 wn = wl->next;
3609 cb (EV_A_ EV_CHILD, wl); 4936 cb (EV_A_ EV_CHILD, wl);
3610 wl = wn; 4937 wl = wn;
3611 } 4938 }
4939#endif
3612/* EV_STAT 0x00001000 /* stat data changed */ 4940/* EV_STAT 0x00001000 /* stat data changed */
3613/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4941/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3614} 4942}
3615#endif 4943#endif
3616 4944
3617#if EV_MULTIPLICITY 4945#if EV_MULTIPLICITY
3618 #include "ev_wrap.h" 4946 #include "ev_wrap.h"
3619#endif 4947#endif
3620 4948
3621#ifdef __cplusplus
3622}
3623#endif
3624

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