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Comparing libev/ev.c (file contents):
Revision 1.304 by root, Sun Jul 19 03:12:28 2009 UTC vs.
Revision 1.458 by root, Sun Oct 27 16:26:07 2013 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 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"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# 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
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
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 */
223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# error "unable to find value for NSIG, please report"
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
190 255
191#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
192# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
193# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
194# else 259# else
195# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
196# endif 261# endif
197#endif 262#endif
198 263
199#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
200# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
201# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
202# else 267# else
203# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
204# endif 269# endif
205#endif 270#endif
206 271
… …
208# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
209#endif 274#endif
210 275
211#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
212# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
213# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
214# else 279# else
215# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
216# endif 281# endif
217#endif 282#endif
218 283
219#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
220# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
221#endif 286#endif
222 287
223#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
224# ifdef _WIN32 289# ifdef _WIN32
225# define EV_USE_POLL 0 290# define EV_USE_POLL 0
226# else 291# else
227# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
228# endif 293# endif
229#endif 294#endif
230 295
231#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
232# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
233# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
234# else 299# else
235# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
236# endif 301# endif
237#endif 302#endif
238 303
… …
244# define EV_USE_PORT 0 309# define EV_USE_PORT 0
245#endif 310#endif
246 311
247#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
248# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
249# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
250# else 315# else
251# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
252# endif 317# endif
253#endif 318#endif
254 319
255#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
256# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_PID_HASHSIZE 1
258# else
259# define EV_PID_HASHSIZE 16
260# endif
261#endif 322#endif
262 323
263#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
264# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
265# define EV_INOTIFY_HASHSIZE 1
266# else
267# define EV_INOTIFY_HASHSIZE 16
268# endif
269#endif 326#endif
270 327
271#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
272# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
273# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
274# else 331# else
275# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
276# endif 333# endif
277#endif 334#endif
278 335
279#ifndef EV_USE_SIGNALFD 336#ifndef EV_USE_SIGNALFD
280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
281# define EV_USE_SIGNALFD 1 338# define EV_USE_SIGNALFD EV_FEATURE_OS
282# else 339# else
283# define EV_USE_SIGNALFD 0 340# define EV_USE_SIGNALFD 0
284# endif 341# endif
285#endif 342#endif
286 343
… …
289# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
290# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
291#endif 348#endif
292 349
293#ifndef EV_VERIFY 350#ifndef EV_VERIFY
294# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
295#endif 352#endif
296 353
297#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
298# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
299#endif 356#endif
300 357
301#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
302# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif
361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
303#endif 376#endif
304 377
305/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 378/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
306/* which makes programs even slower. might work on other unices, too. */ 379/* which makes programs even slower. might work on other unices, too. */
307#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
308# include <syscall.h> 381# include <sys/syscall.h>
309# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
310# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
311# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
312# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
313# else 386# else
… …
332# undef EV_USE_INOTIFY 405# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
334#endif 407#endif
335 408
336#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
337# ifndef _WIN32 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
338# include <sys/select.h> 412# include <sys/select.h>
339# endif 413# endif
340#endif 414#endif
341 415
342#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
343# include <sys/utsname.h>
344# include <sys/statfs.h> 417# include <sys/statfs.h>
345# include <sys/inotify.h> 418# include <sys/inotify.h>
346/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
347# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
348# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
349# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
350# endif 423# endif
351#endif 424#endif
352 425
353#if EV_SELECT_IS_WINSOCKET
354# include <winsock.h>
355#endif
356
357#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
358/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
359# include <stdint.h> 428# include <stdint.h>
360# ifndef EFD_NONBLOCK 429# ifndef EFD_NONBLOCK
361# define EFD_NONBLOCK O_NONBLOCK 430# define EFD_NONBLOCK O_NONBLOCK
362# endif 431# endif
363# ifndef EFD_CLOEXEC 432# ifndef EFD_CLOEXEC
433# ifdef O_CLOEXEC
364# define EFD_CLOEXEC O_CLOEXEC 434# define EFD_CLOEXEC O_CLOEXEC
435# else
436# define EFD_CLOEXEC 02000000
437# endif
365# endif 438# endif
366# ifdef __cplusplus 439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
367extern "C" { 440#endif
441
442#if EV_USE_SIGNALFD
443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
444# include <stdint.h>
445# ifndef SFD_NONBLOCK
446# define SFD_NONBLOCK O_NONBLOCK
368# endif 447# endif
369int eventfd (unsigned int initval, int flags); 448# ifndef SFD_CLOEXEC
370# ifdef __cplusplus 449# ifdef O_CLOEXEC
371} 450# define SFD_CLOEXEC O_CLOEXEC
451# else
452# define SFD_CLOEXEC 02000000
453# endif
372# endif 454# endif
373#endif 455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
374 456
375#if EV_USE_SIGNALFD 457struct signalfd_siginfo
376# include <sys/signalfd.h> 458{
459 uint32_t ssi_signo;
460 char pad[128 - sizeof (uint32_t)];
461};
377#endif 462#endif
378 463
379/**/ 464/**/
380 465
381#if EV_VERIFY >= 3 466#if EV_VERIFY >= 3
382# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 467# define EV_FREQUENT_CHECK ev_verify (EV_A)
383#else 468#else
384# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
385#endif 470#endif
386 471
387/* 472/*
388 * This is used to avoid floating point rounding problems. 473 * This is used to work around floating point rounding problems.
389 * It is added to ev_rt_now when scheduling periodics
390 * to ensure progress, time-wise, even when rounding
391 * errors are against us.
392 * This value is good at least till the year 4000. 474 * This value is good at least till the year 4000.
393 * Better solutions welcome.
394 */ 475 */
395#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
396 478
397#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 479#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
398#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
399/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
400 481
482#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
484
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
401#if __GNUC__ >= 4 529 #if __GNUC__
402# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
403# define noinline __attribute__ ((noinline)) 531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
404#else 545#else
405# define expect(expr,value) (expr) 546 #include <inttypes.h>
406# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
407# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
408# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
409# endif 552#endif
553
554/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64
556 #if _ILP32
557 #define ECB_AMD64_X32 1
558 #else
559 #define ECB_AMD64 1
410#endif 560 #endif
561#endif
411 562
563/* many compilers define _GNUC_ to some versions but then only implement
564 * what their idiot authors think are the "more important" extensions,
565 * causing enormous grief in return for some better fake benchmark numbers.
566 * or so.
567 * we try to detect these and simply assume they are not gcc - if they have
568 * an issue with that they should have done it right in the first place.
569 */
570#ifndef ECB_GCC_VERSION
571 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
572 #define ECB_GCC_VERSION(major,minor) 0
573 #else
574 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
575 #endif
576#endif
577
578#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
579#define ECB_C99 (__STDC_VERSION__ >= 199901L)
580#define ECB_C11 (__STDC_VERSION__ >= 201112L)
581#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L)
583
584#if ECB_CPP
585 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END }
588#else
589 #define ECB_EXTERN_C extern
590 #define ECB_EXTERN_C_BEG
591 #define ECB_EXTERN_C_END
592#endif
593
594/*****************************************************************************/
595
596/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
597/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
598
599#if ECB_NO_THREADS
600 #define ECB_NO_SMP 1
601#endif
602
603#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0)
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
609 #if __i386 || __i386__
610 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
631 #elif defined __mips__
632 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
633 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
635 #elif defined __alpha__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
637 #elif defined __hppa__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
639 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
640 #elif defined __ia64__
641 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
642 #elif defined __m68k__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
644 #elif defined __m88k__
645 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
646 #elif defined __sh__
647 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
648 #endif
649 #endif
650#endif
651
652#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(4,7)
654 /* see comment below (stdatomic.h) about the C11 memory model. */
655 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
656
657 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
658 * without risking compile time errors with other compilers. We *could*
659 * define our own ecb_clang_has_feature, but I just can't be bothered to work
660 * around this shit time and again.
661 * #elif defined __clang && __has_feature (cxx_atomic)
662 * // see comment below (stdatomic.h) about the C11 memory model.
663 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
664 */
665
666 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
667 #define ECB_MEMORY_FENCE __sync_synchronize ()
668 #elif _MSC_VER >= 1400 /* VC++ 2005 */
669 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
670 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
671 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
672 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
673 #elif defined _WIN32
674 #include <WinNT.h>
675 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
676 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
677 #include <mbarrier.h>
678 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
679 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
680 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
681 #elif __xlC__
682 #define ECB_MEMORY_FENCE __sync ()
683 #endif
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
688 /* we assume that these memory fences work on all variables/all memory accesses, */
689 /* not just C11 atomics and atomic accesses */
690 #include <stdatomic.h>
691 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
692 /* any fence other than seq_cst, which isn't very efficient for us. */
693 /* Why that is, we don't know - either the C11 memory model is quite useless */
694 /* for most usages, or gcc and clang have a bug */
695 /* I *currently* lean towards the latter, and inefficiently implement */
696 /* all three of ecb's fences as a seq_cst fence */
697 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
698 #endif
699#endif
700
701#ifndef ECB_MEMORY_FENCE
702 #if !ECB_AVOID_PTHREADS
703 /*
704 * if you get undefined symbol references to pthread_mutex_lock,
705 * or failure to find pthread.h, then you should implement
706 * the ECB_MEMORY_FENCE operations for your cpu/compiler
707 * OR provide pthread.h and link against the posix thread library
708 * of your system.
709 */
710 #include <pthread.h>
711 #define ECB_NEEDS_PTHREADS 1
712 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
713
714 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
715 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
716 #endif
717#endif
718
719#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
720 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
721#endif
722
723#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
724 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
725#endif
726
727/*****************************************************************************/
728
729#if __cplusplus
730 #define ecb_inline static inline
731#elif ECB_GCC_VERSION(2,5)
732 #define ecb_inline static __inline__
733#elif ECB_C99
734 #define ecb_inline static inline
735#else
736 #define ecb_inline static
737#endif
738
739#if ECB_GCC_VERSION(3,3)
740 #define ecb_restrict __restrict__
741#elif ECB_C99
742 #define ecb_restrict restrict
743#else
744 #define ecb_restrict
745#endif
746
747typedef int ecb_bool;
748
749#define ECB_CONCAT_(a, b) a ## b
750#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
751#define ECB_STRINGIFY_(a) # a
752#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
753
754#define ecb_function_ ecb_inline
755
756#if ECB_GCC_VERSION(3,1)
757 #define ecb_attribute(attrlist) __attribute__(attrlist)
758 #define ecb_is_constant(expr) __builtin_constant_p (expr)
759 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
760 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
761#else
762 #define ecb_attribute(attrlist)
763 #define ecb_is_constant(expr) 0
764 #define ecb_expect(expr,value) (expr)
765 #define ecb_prefetch(addr,rw,locality)
766#endif
767
768/* no emulation for ecb_decltype */
769#if ECB_GCC_VERSION(4,5)
770 #define ecb_decltype(x) __decltype(x)
771#elif ECB_GCC_VERSION(3,0)
772 #define ecb_decltype(x) __typeof(x)
773#endif
774
775#define ecb_noinline ecb_attribute ((__noinline__))
776#define ecb_unused ecb_attribute ((__unused__))
777#define ecb_const ecb_attribute ((__const__))
778#define ecb_pure ecb_attribute ((__pure__))
779
780#if ECB_C11
781 #define ecb_noreturn _Noreturn
782#else
783 #define ecb_noreturn ecb_attribute ((__noreturn__))
784#endif
785
786#if ECB_GCC_VERSION(4,3)
787 #define ecb_artificial ecb_attribute ((__artificial__))
788 #define ecb_hot ecb_attribute ((__hot__))
789 #define ecb_cold ecb_attribute ((__cold__))
790#else
791 #define ecb_artificial
792 #define ecb_hot
793 #define ecb_cold
794#endif
795
796/* put around conditional expressions if you are very sure that the */
797/* expression is mostly true or mostly false. note that these return */
798/* booleans, not the expression. */
412#define expect_false(expr) expect ((expr) != 0, 0) 799#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
413#define expect_true(expr) expect ((expr) != 0, 1) 800#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
801/* for compatibility to the rest of the world */
802#define ecb_likely(expr) ecb_expect_true (expr)
803#define ecb_unlikely(expr) ecb_expect_false (expr)
804
805/* count trailing zero bits and count # of one bits */
806#if ECB_GCC_VERSION(3,4)
807 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
808 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
809 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
810 #define ecb_ctz32(x) __builtin_ctz (x)
811 #define ecb_ctz64(x) __builtin_ctzll (x)
812 #define ecb_popcount32(x) __builtin_popcount (x)
813 /* no popcountll */
814#else
815 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
816 ecb_function_ int
817 ecb_ctz32 (uint32_t x)
818 {
819 int r = 0;
820
821 x &= ~x + 1; /* this isolates the lowest bit */
822
823#if ECB_branchless_on_i386
824 r += !!(x & 0xaaaaaaaa) << 0;
825 r += !!(x & 0xcccccccc) << 1;
826 r += !!(x & 0xf0f0f0f0) << 2;
827 r += !!(x & 0xff00ff00) << 3;
828 r += !!(x & 0xffff0000) << 4;
829#else
830 if (x & 0xaaaaaaaa) r += 1;
831 if (x & 0xcccccccc) r += 2;
832 if (x & 0xf0f0f0f0) r += 4;
833 if (x & 0xff00ff00) r += 8;
834 if (x & 0xffff0000) r += 16;
835#endif
836
837 return r;
838 }
839
840 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
841 ecb_function_ int
842 ecb_ctz64 (uint64_t x)
843 {
844 int shift = x & 0xffffffffU ? 0 : 32;
845 return ecb_ctz32 (x >> shift) + shift;
846 }
847
848 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
849 ecb_function_ int
850 ecb_popcount32 (uint32_t x)
851 {
852 x -= (x >> 1) & 0x55555555;
853 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
854 x = ((x >> 4) + x) & 0x0f0f0f0f;
855 x *= 0x01010101;
856
857 return x >> 24;
858 }
859
860 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
861 ecb_function_ int ecb_ld32 (uint32_t x)
862 {
863 int r = 0;
864
865 if (x >> 16) { x >>= 16; r += 16; }
866 if (x >> 8) { x >>= 8; r += 8; }
867 if (x >> 4) { x >>= 4; r += 4; }
868 if (x >> 2) { x >>= 2; r += 2; }
869 if (x >> 1) { r += 1; }
870
871 return r;
872 }
873
874 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
875 ecb_function_ int ecb_ld64 (uint64_t x)
876 {
877 int r = 0;
878
879 if (x >> 32) { x >>= 32; r += 32; }
880
881 return r + ecb_ld32 (x);
882 }
883#endif
884
885ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
886ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
887ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
888ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
889
890ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
891ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
892{
893 return ( (x * 0x0802U & 0x22110U)
894 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
895}
896
897ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
898ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
899{
900 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
901 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
902 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
903 x = ( x >> 8 ) | ( x << 8);
904
905 return x;
906}
907
908ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
909ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
910{
911 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
912 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
913 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
914 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
915 x = ( x >> 16 ) | ( x << 16);
916
917 return x;
918}
919
920/* popcount64 is only available on 64 bit cpus as gcc builtin */
921/* so for this version we are lazy */
922ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
923ecb_function_ int
924ecb_popcount64 (uint64_t x)
925{
926 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
927}
928
929ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
930ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
931ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
932ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
933ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
934ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
935ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
936ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
937
938ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
939ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
940ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
941ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
942ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
943ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
944ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
945ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
946
947#if ECB_GCC_VERSION(4,3)
948 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
949 #define ecb_bswap32(x) __builtin_bswap32 (x)
950 #define ecb_bswap64(x) __builtin_bswap64 (x)
951#else
952 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
953 ecb_function_ uint16_t
954 ecb_bswap16 (uint16_t x)
955 {
956 return ecb_rotl16 (x, 8);
957 }
958
959 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
960 ecb_function_ uint32_t
961 ecb_bswap32 (uint32_t x)
962 {
963 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
964 }
965
966 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
967 ecb_function_ uint64_t
968 ecb_bswap64 (uint64_t x)
969 {
970 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
971 }
972#endif
973
974#if ECB_GCC_VERSION(4,5)
975 #define ecb_unreachable() __builtin_unreachable ()
976#else
977 /* this seems to work fine, but gcc always emits a warning for it :/ */
978 ecb_inline void ecb_unreachable (void) ecb_noreturn;
979 ecb_inline void ecb_unreachable (void) { }
980#endif
981
982/* try to tell the compiler that some condition is definitely true */
983#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
984
985ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
986ecb_inline unsigned char
987ecb_byteorder_helper (void)
988{
989 /* the union code still generates code under pressure in gcc, */
990 /* but less than using pointers, and always seems to */
991 /* successfully return a constant. */
992 /* the reason why we have this horrible preprocessor mess */
993 /* is to avoid it in all cases, at least on common architectures */
994 /* or when using a recent enough gcc version (>= 4.6) */
995#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
996 return 0x44;
997#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
998 return 0x44;
999#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1000 return 0x11;
1001#else
1002 union
1003 {
1004 uint32_t i;
1005 uint8_t c;
1006 } u = { 0x11223344 };
1007 return u.c;
1008#endif
1009}
1010
1011ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1012ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1013ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1014ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1015
1016#if ECB_GCC_VERSION(3,0) || ECB_C99
1017 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1018#else
1019 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1020#endif
1021
1022#if __cplusplus
1023 template<typename T>
1024 static inline T ecb_div_rd (T val, T div)
1025 {
1026 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1027 }
1028 template<typename T>
1029 static inline T ecb_div_ru (T val, T div)
1030 {
1031 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1032 }
1033#else
1034 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1035 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1036#endif
1037
1038#if ecb_cplusplus_does_not_suck
1039 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1040 template<typename T, int N>
1041 static inline int ecb_array_length (const T (&arr)[N])
1042 {
1043 return N;
1044 }
1045#else
1046 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1047#endif
1048
1049/*******************************************************************************/
1050/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1051
1052/* basically, everything uses "ieee pure-endian" floating point numbers */
1053/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1054#if 0 \
1055 || __i386 || __i386__ \
1056 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1057 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1058 || defined __arm__ && defined __ARM_EABI__ \
1059 || defined __s390__ || defined __s390x__ \
1060 || defined __mips__ \
1061 || defined __alpha__ \
1062 || defined __hppa__ \
1063 || defined __ia64__ \
1064 || defined __m68k__ \
1065 || defined __m88k__ \
1066 || defined __sh__ \
1067 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1068 #define ECB_STDFP 1
1069 #include <string.h> /* for memcpy */
1070#else
1071 #define ECB_STDFP 0
1072#endif
1073
1074#ifndef ECB_NO_LIBM
1075
1076 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1077
1078 #ifdef NEN
1079 #define ECB_NAN NAN
1080 #else
1081 #define ECB_NAN INFINITY
1082 #endif
1083
1084 /* converts an ieee half/binary16 to a float */
1085 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1086 ecb_function_ float
1087 ecb_binary16_to_float (uint16_t x)
1088 {
1089 int e = (x >> 10) & 0x1f;
1090 int m = x & 0x3ff;
1091 float r;
1092
1093 if (!e ) r = ldexpf (m , -24);
1094 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1095 else if (m ) r = ECB_NAN;
1096 else r = INFINITY;
1097
1098 return x & 0x8000 ? -r : r;
1099 }
1100
1101 /* convert a float to ieee single/binary32 */
1102 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1103 ecb_function_ uint32_t
1104 ecb_float_to_binary32 (float x)
1105 {
1106 uint32_t r;
1107
1108 #if ECB_STDFP
1109 memcpy (&r, &x, 4);
1110 #else
1111 /* slow emulation, works for anything but -0 */
1112 uint32_t m;
1113 int e;
1114
1115 if (x == 0e0f ) return 0x00000000U;
1116 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1117 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1118 if (x != x ) return 0x7fbfffffU;
1119
1120 m = frexpf (x, &e) * 0x1000000U;
1121
1122 r = m & 0x80000000U;
1123
1124 if (r)
1125 m = -m;
1126
1127 if (e <= -126)
1128 {
1129 m &= 0xffffffU;
1130 m >>= (-125 - e);
1131 e = -126;
1132 }
1133
1134 r |= (e + 126) << 23;
1135 r |= m & 0x7fffffU;
1136 #endif
1137
1138 return r;
1139 }
1140
1141 /* converts an ieee single/binary32 to a float */
1142 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1143 ecb_function_ float
1144 ecb_binary32_to_float (uint32_t x)
1145 {
1146 float r;
1147
1148 #if ECB_STDFP
1149 memcpy (&r, &x, 4);
1150 #else
1151 /* emulation, only works for normals and subnormals and +0 */
1152 int neg = x >> 31;
1153 int e = (x >> 23) & 0xffU;
1154
1155 x &= 0x7fffffU;
1156
1157 if (e)
1158 x |= 0x800000U;
1159 else
1160 e = 1;
1161
1162 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1163 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1164
1165 r = neg ? -r : r;
1166 #endif
1167
1168 return r;
1169 }
1170
1171 /* convert a double to ieee double/binary64 */
1172 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1173 ecb_function_ uint64_t
1174 ecb_double_to_binary64 (double x)
1175 {
1176 uint64_t r;
1177
1178 #if ECB_STDFP
1179 memcpy (&r, &x, 8);
1180 #else
1181 /* slow emulation, works for anything but -0 */
1182 uint64_t m;
1183 int e;
1184
1185 if (x == 0e0 ) return 0x0000000000000000U;
1186 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1187 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1188 if (x != x ) return 0X7ff7ffffffffffffU;
1189
1190 m = frexp (x, &e) * 0x20000000000000U;
1191
1192 r = m & 0x8000000000000000;;
1193
1194 if (r)
1195 m = -m;
1196
1197 if (e <= -1022)
1198 {
1199 m &= 0x1fffffffffffffU;
1200 m >>= (-1021 - e);
1201 e = -1022;
1202 }
1203
1204 r |= ((uint64_t)(e + 1022)) << 52;
1205 r |= m & 0xfffffffffffffU;
1206 #endif
1207
1208 return r;
1209 }
1210
1211 /* converts an ieee double/binary64 to a double */
1212 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1213 ecb_function_ double
1214 ecb_binary64_to_double (uint64_t x)
1215 {
1216 double r;
1217
1218 #if ECB_STDFP
1219 memcpy (&r, &x, 8);
1220 #else
1221 /* emulation, only works for normals and subnormals and +0 */
1222 int neg = x >> 63;
1223 int e = (x >> 52) & 0x7ffU;
1224
1225 x &= 0xfffffffffffffU;
1226
1227 if (e)
1228 x |= 0x10000000000000U;
1229 else
1230 e = 1;
1231
1232 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1233 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1234
1235 r = neg ? -r : r;
1236 #endif
1237
1238 return r;
1239 }
1240
1241#endif
1242
1243#endif
1244
1245/* ECB.H END */
1246
1247#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1248/* if your architecture doesn't need memory fences, e.g. because it is
1249 * single-cpu/core, or if you use libev in a project that doesn't use libev
1250 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1251 * libev, in which cases the memory fences become nops.
1252 * alternatively, you can remove this #error and link against libpthread,
1253 * which will then provide the memory fences.
1254 */
1255# error "memory fences not defined for your architecture, please report"
1256#endif
1257
1258#ifndef ECB_MEMORY_FENCE
1259# define ECB_MEMORY_FENCE do { } while (0)
1260# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1261# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1262#endif
1263
1264#define expect_false(cond) ecb_expect_false (cond)
1265#define expect_true(cond) ecb_expect_true (cond)
1266#define noinline ecb_noinline
1267
414#define inline_size static inline 1268#define inline_size ecb_inline
415 1269
416#if EV_MINIMAL 1270#if EV_FEATURE_CODE
1271# define inline_speed ecb_inline
1272#else
417# define inline_speed static noinline 1273# define inline_speed static noinline
418#else
419# define inline_speed static inline
420#endif 1274#endif
421 1275
422#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1276#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
423 1277
424#if EV_MINPRI == EV_MAXPRI 1278#if EV_MINPRI == EV_MAXPRI
… …
437#define ev_active(w) ((W)(w))->active 1291#define ev_active(w) ((W)(w))->active
438#define ev_at(w) ((WT)(w))->at 1292#define ev_at(w) ((WT)(w))->at
439 1293
440#if EV_USE_REALTIME 1294#if EV_USE_REALTIME
441/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1295/* sig_atomic_t is used to avoid per-thread variables or locking but still */
442/* giving it a reasonably high chance of working on typical architetcures */ 1296/* giving it a reasonably high chance of working on typical architectures */
443static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1297static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
444#endif 1298#endif
445 1299
446#if EV_USE_MONOTONIC 1300#if EV_USE_MONOTONIC
447static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1301static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
448#endif 1302#endif
449 1303
1304#ifndef EV_FD_TO_WIN32_HANDLE
1305# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1306#endif
1307#ifndef EV_WIN32_HANDLE_TO_FD
1308# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1309#endif
1310#ifndef EV_WIN32_CLOSE_FD
1311# define EV_WIN32_CLOSE_FD(fd) close (fd)
1312#endif
1313
450#ifdef _WIN32 1314#ifdef _WIN32
451# include "ev_win32.c" 1315# include "ev_win32.c"
452#endif 1316#endif
453 1317
454/*****************************************************************************/ 1318/*****************************************************************************/
455 1319
1320/* define a suitable floor function (only used by periodics atm) */
1321
1322#if EV_USE_FLOOR
1323# include <math.h>
1324# define ev_floor(v) floor (v)
1325#else
1326
1327#include <float.h>
1328
1329/* a floor() replacement function, should be independent of ev_tstamp type */
1330static ev_tstamp noinline
1331ev_floor (ev_tstamp v)
1332{
1333 /* the choice of shift factor is not terribly important */
1334#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1335 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1336#else
1337 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1338#endif
1339
1340 /* argument too large for an unsigned long? */
1341 if (expect_false (v >= shift))
1342 {
1343 ev_tstamp f;
1344
1345 if (v == v - 1.)
1346 return v; /* very large number */
1347
1348 f = shift * ev_floor (v * (1. / shift));
1349 return f + ev_floor (v - f);
1350 }
1351
1352 /* special treatment for negative args? */
1353 if (expect_false (v < 0.))
1354 {
1355 ev_tstamp f = -ev_floor (-v);
1356
1357 return f - (f == v ? 0 : 1);
1358 }
1359
1360 /* fits into an unsigned long */
1361 return (unsigned long)v;
1362}
1363
1364#endif
1365
1366/*****************************************************************************/
1367
1368#ifdef __linux
1369# include <sys/utsname.h>
1370#endif
1371
1372static unsigned int noinline ecb_cold
1373ev_linux_version (void)
1374{
1375#ifdef __linux
1376 unsigned int v = 0;
1377 struct utsname buf;
1378 int i;
1379 char *p = buf.release;
1380
1381 if (uname (&buf))
1382 return 0;
1383
1384 for (i = 3+1; --i; )
1385 {
1386 unsigned int c = 0;
1387
1388 for (;;)
1389 {
1390 if (*p >= '0' && *p <= '9')
1391 c = c * 10 + *p++ - '0';
1392 else
1393 {
1394 p += *p == '.';
1395 break;
1396 }
1397 }
1398
1399 v = (v << 8) | c;
1400 }
1401
1402 return v;
1403#else
1404 return 0;
1405#endif
1406}
1407
1408/*****************************************************************************/
1409
1410#if EV_AVOID_STDIO
1411static void noinline ecb_cold
1412ev_printerr (const char *msg)
1413{
1414 write (STDERR_FILENO, msg, strlen (msg));
1415}
1416#endif
1417
456static void (*syserr_cb)(const char *msg); 1418static void (*syserr_cb)(const char *msg) EV_THROW;
457 1419
458void 1420void ecb_cold
459ev_set_syserr_cb (void (*cb)(const char *msg)) 1421ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
460{ 1422{
461 syserr_cb = cb; 1423 syserr_cb = cb;
462} 1424}
463 1425
464static void noinline 1426static void noinline ecb_cold
465ev_syserr (const char *msg) 1427ev_syserr (const char *msg)
466{ 1428{
467 if (!msg) 1429 if (!msg)
468 msg = "(libev) system error"; 1430 msg = "(libev) system error";
469 1431
470 if (syserr_cb) 1432 if (syserr_cb)
471 syserr_cb (msg); 1433 syserr_cb (msg);
472 else 1434 else
473 { 1435 {
1436#if EV_AVOID_STDIO
1437 ev_printerr (msg);
1438 ev_printerr (": ");
1439 ev_printerr (strerror (errno));
1440 ev_printerr ("\n");
1441#else
474 perror (msg); 1442 perror (msg);
1443#endif
475 abort (); 1444 abort ();
476 } 1445 }
477} 1446}
478 1447
479static void * 1448static void *
480ev_realloc_emul (void *ptr, long size) 1449ev_realloc_emul (void *ptr, long size) EV_THROW
481{ 1450{
482 /* some systems, notably openbsd and darwin, fail to properly 1451 /* some systems, notably openbsd and darwin, fail to properly
483 * implement realloc (x, 0) (as required by both ansi c-98 and 1452 * implement realloc (x, 0) (as required by both ansi c-89 and
484 * the single unix specification, so work around them here. 1453 * the single unix specification, so work around them here.
1454 * recently, also (at least) fedora and debian started breaking it,
1455 * despite documenting it otherwise.
485 */ 1456 */
486 1457
487 if (size) 1458 if (size)
488 return realloc (ptr, size); 1459 return realloc (ptr, size);
489 1460
490 free (ptr); 1461 free (ptr);
491 return 0; 1462 return 0;
492} 1463}
493 1464
494static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1465static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
495 1466
496void 1467void ecb_cold
497ev_set_allocator (void *(*cb)(void *ptr, long size)) 1468ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
498{ 1469{
499 alloc = cb; 1470 alloc = cb;
500} 1471}
501 1472
502inline_speed void * 1473inline_speed void *
… …
504{ 1475{
505 ptr = alloc (ptr, size); 1476 ptr = alloc (ptr, size);
506 1477
507 if (!ptr && size) 1478 if (!ptr && size)
508 { 1479 {
1480#if EV_AVOID_STDIO
1481 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1482#else
509 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1483 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1484#endif
510 abort (); 1485 abort ();
511 } 1486 }
512 1487
513 return ptr; 1488 return ptr;
514} 1489}
… …
530 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1505 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
531 unsigned char unused; 1506 unsigned char unused;
532#if EV_USE_EPOLL 1507#if EV_USE_EPOLL
533 unsigned int egen; /* generation counter to counter epoll bugs */ 1508 unsigned int egen; /* generation counter to counter epoll bugs */
534#endif 1509#endif
535#if EV_SELECT_IS_WINSOCKET 1510#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
536 SOCKET handle; 1511 SOCKET handle;
1512#endif
1513#if EV_USE_IOCP
1514 OVERLAPPED or, ow;
537#endif 1515#endif
538} ANFD; 1516} ANFD;
539 1517
540/* stores the pending event set for a given watcher */ 1518/* stores the pending event set for a given watcher */
541typedef struct 1519typedef struct
… …
583 #undef VAR 1561 #undef VAR
584 }; 1562 };
585 #include "ev_wrap.h" 1563 #include "ev_wrap.h"
586 1564
587 static struct ev_loop default_loop_struct; 1565 static struct ev_loop default_loop_struct;
588 struct ev_loop *ev_default_loop_ptr; 1566 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
589 1567
590#else 1568#else
591 1569
592 ev_tstamp ev_rt_now; 1570 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
593 #define VAR(name,decl) static decl; 1571 #define VAR(name,decl) static decl;
594 #include "ev_vars.h" 1572 #include "ev_vars.h"
595 #undef VAR 1573 #undef VAR
596 1574
597 static int ev_default_loop_ptr; 1575 static int ev_default_loop_ptr;
598 1576
599#endif 1577#endif
600 1578
601#if EV_MINIMAL < 2 1579#if EV_FEATURE_API
602# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1580# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
603# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1581# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
604# define EV_INVOKE_PENDING invoke_cb (EV_A) 1582# define EV_INVOKE_PENDING invoke_cb (EV_A)
605#else 1583#else
606# define EV_RELEASE_CB (void)0 1584# define EV_RELEASE_CB (void)0
607# define EV_ACQUIRE_CB (void)0 1585# define EV_ACQUIRE_CB (void)0
608# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1586# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
609#endif 1587#endif
610 1588
611#define EVUNLOOP_RECURSE 0x80 1589#define EVBREAK_RECURSE 0x80
612 1590
613/*****************************************************************************/ 1591/*****************************************************************************/
614 1592
615#ifndef EV_HAVE_EV_TIME 1593#ifndef EV_HAVE_EV_TIME
616ev_tstamp 1594ev_tstamp
617ev_time (void) 1595ev_time (void) EV_THROW
618{ 1596{
619#if EV_USE_REALTIME 1597#if EV_USE_REALTIME
620 if (expect_true (have_realtime)) 1598 if (expect_true (have_realtime))
621 { 1599 {
622 struct timespec ts; 1600 struct timespec ts;
… …
646 return ev_time (); 1624 return ev_time ();
647} 1625}
648 1626
649#if EV_MULTIPLICITY 1627#if EV_MULTIPLICITY
650ev_tstamp 1628ev_tstamp
651ev_now (EV_P) 1629ev_now (EV_P) EV_THROW
652{ 1630{
653 return ev_rt_now; 1631 return ev_rt_now;
654} 1632}
655#endif 1633#endif
656 1634
657void 1635void
658ev_sleep (ev_tstamp delay) 1636ev_sleep (ev_tstamp delay) EV_THROW
659{ 1637{
660 if (delay > 0.) 1638 if (delay > 0.)
661 { 1639 {
662#if EV_USE_NANOSLEEP 1640#if EV_USE_NANOSLEEP
663 struct timespec ts; 1641 struct timespec ts;
664 1642
665 ts.tv_sec = (time_t)delay; 1643 EV_TS_SET (ts, delay);
666 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
667
668 nanosleep (&ts, 0); 1644 nanosleep (&ts, 0);
669#elif defined(_WIN32) 1645#elif defined _WIN32
670 Sleep ((unsigned long)(delay * 1e3)); 1646 Sleep ((unsigned long)(delay * 1e3));
671#else 1647#else
672 struct timeval tv; 1648 struct timeval tv;
673 1649
674 tv.tv_sec = (time_t)delay;
675 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
676
677 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1650 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
678 /* something not guaranteed by newer posix versions, but guaranteed */ 1651 /* something not guaranteed by newer posix versions, but guaranteed */
679 /* by older ones */ 1652 /* by older ones */
1653 EV_TV_SET (tv, delay);
680 select (0, 0, 0, 0, &tv); 1654 select (0, 0, 0, 0, &tv);
681#endif 1655#endif
682 } 1656 }
683} 1657}
684 1658
685/*****************************************************************************/ 1659/*****************************************************************************/
686 1660
687#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
688 1662
689/* find a suitable new size for the given array, */ 1663/* find a suitable new size for the given array, */
690/* hopefully by rounding to a ncie-to-malloc size */ 1664/* hopefully by rounding to a nice-to-malloc size */
691inline_size int 1665inline_size int
692array_nextsize (int elem, int cur, int cnt) 1666array_nextsize (int elem, int cur, int cnt)
693{ 1667{
694 int ncur = cur + 1; 1668 int ncur = cur + 1;
695 1669
696 do 1670 do
697 ncur <<= 1; 1671 ncur <<= 1;
698 while (cnt > ncur); 1672 while (cnt > ncur);
699 1673
700 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
701 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
702 { 1676 {
703 ncur *= elem; 1677 ncur *= elem;
704 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
705 ncur = ncur - sizeof (void *) * 4; 1679 ncur = ncur - sizeof (void *) * 4;
… …
707 } 1681 }
708 1682
709 return ncur; 1683 return ncur;
710} 1684}
711 1685
712static noinline void * 1686static void * noinline ecb_cold
713array_realloc (int elem, void *base, int *cur, int cnt) 1687array_realloc (int elem, void *base, int *cur, int cnt)
714{ 1688{
715 *cur = array_nextsize (elem, *cur, cnt); 1689 *cur = array_nextsize (elem, *cur, cnt);
716 return ev_realloc (base, elem * *cur); 1690 return ev_realloc (base, elem * *cur);
717} 1691}
… …
720 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1694 memset ((void *)(base), 0, sizeof (*(base)) * (count))
721 1695
722#define array_needsize(type,base,cur,cnt,init) \ 1696#define array_needsize(type,base,cur,cnt,init) \
723 if (expect_false ((cnt) > (cur))) \ 1697 if (expect_false ((cnt) > (cur))) \
724 { \ 1698 { \
725 int ocur_ = (cur); \ 1699 int ecb_unused ocur_ = (cur); \
726 (base) = (type *)array_realloc \ 1700 (base) = (type *)array_realloc \
727 (sizeof (type), (base), &(cur), (cnt)); \ 1701 (sizeof (type), (base), &(cur), (cnt)); \
728 init ((base) + (ocur_), (cur) - ocur_); \ 1702 init ((base) + (ocur_), (cur) - ocur_); \
729 } 1703 }
730 1704
… …
748pendingcb (EV_P_ ev_prepare *w, int revents) 1722pendingcb (EV_P_ ev_prepare *w, int revents)
749{ 1723{
750} 1724}
751 1725
752void noinline 1726void noinline
753ev_feed_event (EV_P_ void *w, int revents) 1727ev_feed_event (EV_P_ void *w, int revents) EV_THROW
754{ 1728{
755 W w_ = (W)w; 1729 W w_ = (W)w;
756 int pri = ABSPRI (w_); 1730 int pri = ABSPRI (w_);
757 1731
758 if (expect_false (w_->pending)) 1732 if (expect_false (w_->pending))
… …
762 w_->pending = ++pendingcnt [pri]; 1736 w_->pending = ++pendingcnt [pri];
763 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
764 pendings [pri][w_->pending - 1].w = w_; 1738 pendings [pri][w_->pending - 1].w = w_;
765 pendings [pri][w_->pending - 1].events = revents; 1739 pendings [pri][w_->pending - 1].events = revents;
766 } 1740 }
1741
1742 pendingpri = NUMPRI - 1;
767} 1743}
768 1744
769inline_speed void 1745inline_speed void
770feed_reverse (EV_P_ W w) 1746feed_reverse (EV_P_ W w)
771{ 1747{
… …
791} 1767}
792 1768
793/*****************************************************************************/ 1769/*****************************************************************************/
794 1770
795inline_speed void 1771inline_speed void
796fd_event_nc (EV_P_ int fd, int revents) 1772fd_event_nocheck (EV_P_ int fd, int revents)
797{ 1773{
798 ANFD *anfd = anfds + fd; 1774 ANFD *anfd = anfds + fd;
799 ev_io *w; 1775 ev_io *w;
800 1776
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
813fd_event (EV_P_ int fd, int revents) 1789fd_event (EV_P_ int fd, int revents)
814{ 1790{
815 ANFD *anfd = anfds + fd; 1791 ANFD *anfd = anfds + fd;
816 1792
817 if (expect_true (!anfd->reify)) 1793 if (expect_true (!anfd->reify))
818 fd_event_nc (EV_A_ fd, revents); 1794 fd_event_nocheck (EV_A_ fd, revents);
819} 1795}
820 1796
821void 1797void
822ev_feed_fd_event (EV_P_ int fd, int revents) 1798ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
823{ 1799{
824 if (fd >= 0 && fd < anfdmax) 1800 if (fd >= 0 && fd < anfdmax)
825 fd_event_nc (EV_A_ fd, revents); 1801 fd_event_nocheck (EV_A_ fd, revents);
826} 1802}
827 1803
828/* make sure the external fd watch events are in-sync */ 1804/* make sure the external fd watch events are in-sync */
829/* with the kernel/libev internal state */ 1805/* with the kernel/libev internal state */
830inline_size void 1806inline_size void
831fd_reify (EV_P) 1807fd_reify (EV_P)
832{ 1808{
833 int i; 1809 int i;
834 1810
1811#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1812 for (i = 0; i < fdchangecnt; ++i)
1813 {
1814 int fd = fdchanges [i];
1815 ANFD *anfd = anfds + fd;
1816
1817 if (anfd->reify & EV__IOFDSET && anfd->head)
1818 {
1819 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1820
1821 if (handle != anfd->handle)
1822 {
1823 unsigned long arg;
1824
1825 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1826
1827 /* handle changed, but fd didn't - we need to do it in two steps */
1828 backend_modify (EV_A_ fd, anfd->events, 0);
1829 anfd->events = 0;
1830 anfd->handle = handle;
1831 }
1832 }
1833 }
1834#endif
1835
835 for (i = 0; i < fdchangecnt; ++i) 1836 for (i = 0; i < fdchangecnt; ++i)
836 { 1837 {
837 int fd = fdchanges [i]; 1838 int fd = fdchanges [i];
838 ANFD *anfd = anfds + fd; 1839 ANFD *anfd = anfds + fd;
839 ev_io *w; 1840 ev_io *w;
840 1841
841 unsigned char events = 0; 1842 unsigned char o_events = anfd->events;
1843 unsigned char o_reify = anfd->reify;
842 1844
843 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1845 anfd->reify = 0;
844 events |= (unsigned char)w->events;
845 1846
846#if EV_SELECT_IS_WINSOCKET 1847 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
847 if (events)
848 { 1848 {
849 unsigned long arg; 1849 anfd->events = 0;
850 #ifdef EV_FD_TO_WIN32_HANDLE 1850
851 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1851 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
852 #else 1852 anfd->events |= (unsigned char)w->events;
853 anfd->handle = _get_osfhandle (fd); 1853
854 #endif 1854 if (o_events != anfd->events)
855 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1855 o_reify = EV__IOFDSET; /* actually |= */
856 } 1856 }
857#endif
858 1857
859 { 1858 if (o_reify & EV__IOFDSET)
860 unsigned char o_events = anfd->events;
861 unsigned char o_reify = anfd->reify;
862
863 anfd->reify = 0;
864 anfd->events = events;
865
866 if (o_events != events || o_reify & EV__IOFDSET)
867 backend_modify (EV_A_ fd, o_events, events); 1859 backend_modify (EV_A_ fd, o_events, anfd->events);
868 }
869 } 1860 }
870 1861
871 fdchangecnt = 0; 1862 fdchangecnt = 0;
872} 1863}
873 1864
… …
885 fdchanges [fdchangecnt - 1] = fd; 1876 fdchanges [fdchangecnt - 1] = fd;
886 } 1877 }
887} 1878}
888 1879
889/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1880/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
890inline_speed void 1881inline_speed void ecb_cold
891fd_kill (EV_P_ int fd) 1882fd_kill (EV_P_ int fd)
892{ 1883{
893 ev_io *w; 1884 ev_io *w;
894 1885
895 while ((w = (ev_io *)anfds [fd].head)) 1886 while ((w = (ev_io *)anfds [fd].head))
… …
897 ev_io_stop (EV_A_ w); 1888 ev_io_stop (EV_A_ w);
898 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1889 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
899 } 1890 }
900} 1891}
901 1892
902/* check whether the given fd is atcually valid, for error recovery */ 1893/* check whether the given fd is actually valid, for error recovery */
903inline_size int 1894inline_size int ecb_cold
904fd_valid (int fd) 1895fd_valid (int fd)
905{ 1896{
906#ifdef _WIN32 1897#ifdef _WIN32
907 return _get_osfhandle (fd) != -1; 1898 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
908#else 1899#else
909 return fcntl (fd, F_GETFD) != -1; 1900 return fcntl (fd, F_GETFD) != -1;
910#endif 1901#endif
911} 1902}
912 1903
913/* called on EBADF to verify fds */ 1904/* called on EBADF to verify fds */
914static void noinline 1905static void noinline ecb_cold
915fd_ebadf (EV_P) 1906fd_ebadf (EV_P)
916{ 1907{
917 int fd; 1908 int fd;
918 1909
919 for (fd = 0; fd < anfdmax; ++fd) 1910 for (fd = 0; fd < anfdmax; ++fd)
… …
921 if (!fd_valid (fd) && errno == EBADF) 1912 if (!fd_valid (fd) && errno == EBADF)
922 fd_kill (EV_A_ fd); 1913 fd_kill (EV_A_ fd);
923} 1914}
924 1915
925/* called on ENOMEM in select/poll to kill some fds and retry */ 1916/* called on ENOMEM in select/poll to kill some fds and retry */
926static void noinline 1917static void noinline ecb_cold
927fd_enomem (EV_P) 1918fd_enomem (EV_P)
928{ 1919{
929 int fd; 1920 int fd;
930 1921
931 for (fd = anfdmax; fd--; ) 1922 for (fd = anfdmax; fd--; )
932 if (anfds [fd].events) 1923 if (anfds [fd].events)
933 { 1924 {
934 fd_kill (EV_A_ fd); 1925 fd_kill (EV_A_ fd);
935 return; 1926 break;
936 } 1927 }
937} 1928}
938 1929
939/* usually called after fork if backend needs to re-arm all fds from scratch */ 1930/* usually called after fork if backend needs to re-arm all fds from scratch */
940static void noinline 1931static void noinline
… …
949 anfds [fd].emask = 0; 1940 anfds [fd].emask = 0;
950 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1941 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
951 } 1942 }
952} 1943}
953 1944
1945/* used to prepare libev internal fd's */
1946/* this is not fork-safe */
1947inline_speed void
1948fd_intern (int fd)
1949{
1950#ifdef _WIN32
1951 unsigned long arg = 1;
1952 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1953#else
1954 fcntl (fd, F_SETFD, FD_CLOEXEC);
1955 fcntl (fd, F_SETFL, O_NONBLOCK);
1956#endif
1957}
1958
954/*****************************************************************************/ 1959/*****************************************************************************/
955 1960
956/* 1961/*
957 * the heap functions want a real array index. array index 0 uis guaranteed to not 1962 * the heap functions want a real array index. array index 0 is guaranteed to not
958 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1963 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
959 * the branching factor of the d-tree. 1964 * the branching factor of the d-tree.
960 */ 1965 */
961 1966
962/* 1967/*
… …
1030 2035
1031 for (;;) 2036 for (;;)
1032 { 2037 {
1033 int c = k << 1; 2038 int c = k << 1;
1034 2039
1035 if (c > N + HEAP0 - 1) 2040 if (c >= N + HEAP0)
1036 break; 2041 break;
1037 2042
1038 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2043 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1039 ? 1 : 0; 2044 ? 1 : 0;
1040 2045
… …
1076 2081
1077/* move an element suitably so it is in a correct place */ 2082/* move an element suitably so it is in a correct place */
1078inline_size void 2083inline_size void
1079adjustheap (ANHE *heap, int N, int k) 2084adjustheap (ANHE *heap, int N, int k)
1080{ 2085{
1081 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2086 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1082 upheap (heap, k); 2087 upheap (heap, k);
1083 else 2088 else
1084 downheap (heap, N, k); 2089 downheap (heap, N, k);
1085} 2090}
1086 2091
… …
1099/*****************************************************************************/ 2104/*****************************************************************************/
1100 2105
1101/* associate signal watchers to a signal signal */ 2106/* associate signal watchers to a signal signal */
1102typedef struct 2107typedef struct
1103{ 2108{
2109 EV_ATOMIC_T pending;
2110#if EV_MULTIPLICITY
2111 EV_P;
2112#endif
1104 WL head; 2113 WL head;
1105 EV_ATOMIC_T gotsig;
1106} ANSIG; 2114} ANSIG;
1107 2115
1108static ANSIG *signals; 2116static ANSIG signals [EV_NSIG - 1];
1109static int signalmax;
1110
1111static EV_ATOMIC_T gotsig;
1112 2117
1113/*****************************************************************************/ 2118/*****************************************************************************/
1114 2119
1115/* used to prepare libev internal fd's */ 2120#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1116/* this is not fork-safe */ 2121
2122static void noinline ecb_cold
2123evpipe_init (EV_P)
2124{
2125 if (!ev_is_active (&pipe_w))
2126 {
2127 int fds [2];
2128
2129# if EV_USE_EVENTFD
2130 fds [0] = -1;
2131 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2132 if (fds [1] < 0 && errno == EINVAL)
2133 fds [1] = eventfd (0, 0);
2134
2135 if (fds [1] < 0)
2136# endif
2137 {
2138 while (pipe (fds))
2139 ev_syserr ("(libev) error creating signal/async pipe");
2140
2141 fd_intern (fds [0]);
2142 }
2143
2144 evpipe [0] = fds [0];
2145
2146 if (evpipe [1] < 0)
2147 evpipe [1] = fds [1]; /* first call, set write fd */
2148 else
2149 {
2150 /* on subsequent calls, do not change evpipe [1] */
2151 /* so that evpipe_write can always rely on its value. */
2152 /* this branch does not do anything sensible on windows, */
2153 /* so must not be executed on windows */
2154
2155 dup2 (fds [1], evpipe [1]);
2156 close (fds [1]);
2157 }
2158
2159 fd_intern (evpipe [1]);
2160
2161 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2162 ev_io_start (EV_A_ &pipe_w);
2163 ev_unref (EV_A); /* watcher should not keep loop alive */
2164 }
2165}
2166
1117inline_speed void 2167inline_speed void
1118fd_intern (int fd) 2168evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1119{ 2169{
1120#ifdef _WIN32 2170 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1121 unsigned long arg = 1;
1122 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1123#else
1124 fcntl (fd, F_SETFD, FD_CLOEXEC);
1125 fcntl (fd, F_SETFL, O_NONBLOCK);
1126#endif
1127}
1128 2171
1129static void noinline 2172 if (expect_true (*flag))
1130evpipe_init (EV_P) 2173 return;
1131{ 2174
1132 if (!ev_is_active (&pipe_w)) 2175 *flag = 1;
2176 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2177
2178 pipe_write_skipped = 1;
2179
2180 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2181
2182 if (pipe_write_wanted)
1133 { 2183 {
2184 int old_errno;
2185
2186 pipe_write_skipped = 0;
2187 ECB_MEMORY_FENCE_RELEASE;
2188
2189 old_errno = errno; /* save errno because write will clobber it */
2190
1134#if EV_USE_EVENTFD 2191#if EV_USE_EVENTFD
1135 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2192 if (evpipe [0] < 0)
1136 if (evfd < 0 && errno == EINVAL)
1137 evfd = eventfd (0, 0);
1138
1139 if (evfd >= 0)
1140 { 2193 {
1141 evpipe [0] = -1; 2194 uint64_t counter = 1;
1142 fd_intern (evfd); /* doing it twice doesn't hurt */ 2195 write (evpipe [1], &counter, sizeof (uint64_t));
1143 ev_io_set (&pipe_w, evfd, EV_READ);
1144 } 2196 }
1145 else 2197 else
1146#endif 2198#endif
1147 { 2199 {
1148 while (pipe (evpipe)) 2200#ifdef _WIN32
1149 ev_syserr ("(libev) error creating signal/async pipe"); 2201 WSABUF buf;
1150 2202 DWORD sent;
1151 fd_intern (evpipe [0]); 2203 buf.buf = &buf;
1152 fd_intern (evpipe [1]); 2204 buf.len = 1;
1153 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2205 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2206#else
2207 write (evpipe [1], &(evpipe [1]), 1);
2208#endif
1154 } 2209 }
1155
1156 ev_io_start (EV_A_ &pipe_w);
1157 ev_unref (EV_A); /* watcher should not keep loop alive */
1158 }
1159}
1160
1161inline_size void
1162evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1163{
1164 if (!*flag)
1165 {
1166 int old_errno = errno; /* save errno because write might clobber it */
1167
1168 *flag = 1;
1169
1170#if EV_USE_EVENTFD
1171 if (evfd >= 0)
1172 {
1173 uint64_t counter = 1;
1174 write (evfd, &counter, sizeof (uint64_t));
1175 }
1176 else
1177#endif
1178 write (evpipe [1], &old_errno, 1);
1179 2210
1180 errno = old_errno; 2211 errno = old_errno;
1181 } 2212 }
1182} 2213}
1183 2214
1184/* called whenever the libev signal pipe */ 2215/* called whenever the libev signal pipe */
1185/* got some events (signal, async) */ 2216/* got some events (signal, async) */
1186static void 2217static void
1187pipecb (EV_P_ ev_io *iow, int revents) 2218pipecb (EV_P_ ev_io *iow, int revents)
1188{ 2219{
2220 int i;
2221
2222 if (revents & EV_READ)
2223 {
1189#if EV_USE_EVENTFD 2224#if EV_USE_EVENTFD
1190 if (evfd >= 0) 2225 if (evpipe [0] < 0)
1191 { 2226 {
1192 uint64_t counter; 2227 uint64_t counter;
1193 read (evfd, &counter, sizeof (uint64_t)); 2228 read (evpipe [1], &counter, sizeof (uint64_t));
1194 } 2229 }
1195 else 2230 else
1196#endif 2231#endif
1197 { 2232 {
1198 char dummy; 2233 char dummy[4];
2234#ifdef _WIN32
2235 WSABUF buf;
2236 DWORD recvd;
2237 DWORD flags = 0;
2238 buf.buf = dummy;
2239 buf.len = sizeof (dummy);
2240 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2241#else
1199 read (evpipe [0], &dummy, 1); 2242 read (evpipe [0], &dummy, sizeof (dummy));
2243#endif
2244 }
2245 }
2246
2247 pipe_write_skipped = 0;
2248
2249 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2250
2251#if EV_SIGNAL_ENABLE
2252 if (sig_pending)
1200 } 2253 {
2254 sig_pending = 0;
1201 2255
1202 if (gotsig && ev_is_default_loop (EV_A)) 2256 ECB_MEMORY_FENCE;
1203 {
1204 int signum;
1205 gotsig = 0;
1206 2257
1207 for (signum = signalmax; signum--; ) 2258 for (i = EV_NSIG - 1; i--; )
1208 if (signals [signum].gotsig) 2259 if (expect_false (signals [i].pending))
1209 ev_feed_signal_event (EV_A_ signum + 1); 2260 ev_feed_signal_event (EV_A_ i + 1);
1210 } 2261 }
2262#endif
1211 2263
1212#if EV_ASYNC_ENABLE 2264#if EV_ASYNC_ENABLE
1213 if (gotasync) 2265 if (async_pending)
1214 { 2266 {
1215 int i; 2267 async_pending = 0;
1216 gotasync = 0; 2268
2269 ECB_MEMORY_FENCE;
1217 2270
1218 for (i = asynccnt; i--; ) 2271 for (i = asynccnt; i--; )
1219 if (asyncs [i]->sent) 2272 if (asyncs [i]->sent)
1220 { 2273 {
1221 asyncs [i]->sent = 0; 2274 asyncs [i]->sent = 0;
2275 ECB_MEMORY_FENCE_RELEASE;
1222 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2276 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1223 } 2277 }
1224 } 2278 }
1225#endif 2279#endif
1226} 2280}
1227 2281
1228/*****************************************************************************/ 2282/*****************************************************************************/
1229 2283
2284void
2285ev_feed_signal (int signum) EV_THROW
2286{
2287#if EV_MULTIPLICITY
2288 EV_P;
2289 ECB_MEMORY_FENCE_ACQUIRE;
2290 EV_A = signals [signum - 1].loop;
2291
2292 if (!EV_A)
2293 return;
2294#endif
2295
2296 signals [signum - 1].pending = 1;
2297 evpipe_write (EV_A_ &sig_pending);
2298}
2299
1230static void 2300static void
1231ev_sighandler (int signum) 2301ev_sighandler (int signum)
1232{ 2302{
2303#ifdef _WIN32
2304 signal (signum, ev_sighandler);
2305#endif
2306
2307 ev_feed_signal (signum);
2308}
2309
2310void noinline
2311ev_feed_signal_event (EV_P_ int signum) EV_THROW
2312{
2313 WL w;
2314
2315 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2316 return;
2317
2318 --signum;
2319
1233#if EV_MULTIPLICITY 2320#if EV_MULTIPLICITY
1234 struct ev_loop *loop = &default_loop_struct; 2321 /* it is permissible to try to feed a signal to the wrong loop */
1235#endif 2322 /* or, likely more useful, feeding a signal nobody is waiting for */
1236 2323
1237#if _WIN32 2324 if (expect_false (signals [signum].loop != EV_A))
1238 signal (signum, ev_sighandler);
1239#endif
1240
1241 signals [signum - 1].gotsig = 1;
1242 evpipe_write (EV_A_ &gotsig);
1243}
1244
1245void noinline
1246ev_feed_signal_event (EV_P_ int signum)
1247{
1248 WL w;
1249
1250#if EV_MULTIPLICITY
1251 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1252#endif
1253
1254 --signum;
1255
1256 if (signum < 0 || signum >= signalmax)
1257 return; 2325 return;
2326#endif
1258 2327
1259 signals [signum].gotsig = 0; 2328 signals [signum].pending = 0;
2329 ECB_MEMORY_FENCE_RELEASE;
1260 2330
1261 for (w = signals [signum].head; w; w = w->next) 2331 for (w = signals [signum].head; w; w = w->next)
1262 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2332 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1263} 2333}
1264 2334
1265#if EV_USE_SIGNALFD 2335#if EV_USE_SIGNALFD
1266static void 2336static void
1267sigfdcb (EV_P_ ev_io *iow, int revents) 2337sigfdcb (EV_P_ ev_io *iow, int revents)
1268{ 2338{
1269 struct signalfd_siginfo si[4], *sip; 2339 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1270 2340
1271 for (;;) 2341 for (;;)
1272 { 2342 {
1273 ssize_t res = read (sigfd, si, sizeof (si)); 2343 ssize_t res = read (sigfd, si, sizeof (si));
1274 2344
… …
1280 break; 2350 break;
1281 } 2351 }
1282} 2352}
1283#endif 2353#endif
1284 2354
2355#endif
2356
1285/*****************************************************************************/ 2357/*****************************************************************************/
1286 2358
2359#if EV_CHILD_ENABLE
1287static WL childs [EV_PID_HASHSIZE]; 2360static WL childs [EV_PID_HASHSIZE];
1288
1289#ifndef _WIN32
1290 2361
1291static ev_signal childev; 2362static ev_signal childev;
1292 2363
1293#ifndef WIFCONTINUED 2364#ifndef WIFCONTINUED
1294# define WIFCONTINUED(status) 0 2365# define WIFCONTINUED(status) 0
… …
1299child_reap (EV_P_ int chain, int pid, int status) 2370child_reap (EV_P_ int chain, int pid, int status)
1300{ 2371{
1301 ev_child *w; 2372 ev_child *w;
1302 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2373 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1303 2374
1304 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2375 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1305 { 2376 {
1306 if ((w->pid == pid || !w->pid) 2377 if ((w->pid == pid || !w->pid)
1307 && (!traced || (w->flags & 1))) 2378 && (!traced || (w->flags & 1)))
1308 { 2379 {
1309 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2380 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1334 /* make sure we are called again until all children have been reaped */ 2405 /* make sure we are called again until all children have been reaped */
1335 /* we need to do it this way so that the callback gets called before we continue */ 2406 /* we need to do it this way so that the callback gets called before we continue */
1336 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2407 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1337 2408
1338 child_reap (EV_A_ pid, pid, status); 2409 child_reap (EV_A_ pid, pid, status);
1339 if (EV_PID_HASHSIZE > 1) 2410 if ((EV_PID_HASHSIZE) > 1)
1340 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2411 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1341} 2412}
1342 2413
1343#endif 2414#endif
1344 2415
1345/*****************************************************************************/ 2416/*****************************************************************************/
1346 2417
2418#if EV_USE_IOCP
2419# include "ev_iocp.c"
2420#endif
1347#if EV_USE_PORT 2421#if EV_USE_PORT
1348# include "ev_port.c" 2422# include "ev_port.c"
1349#endif 2423#endif
1350#if EV_USE_KQUEUE 2424#if EV_USE_KQUEUE
1351# include "ev_kqueue.c" 2425# include "ev_kqueue.c"
… …
1358#endif 2432#endif
1359#if EV_USE_SELECT 2433#if EV_USE_SELECT
1360# include "ev_select.c" 2434# include "ev_select.c"
1361#endif 2435#endif
1362 2436
1363int 2437int ecb_cold
1364ev_version_major (void) 2438ev_version_major (void) EV_THROW
1365{ 2439{
1366 return EV_VERSION_MAJOR; 2440 return EV_VERSION_MAJOR;
1367} 2441}
1368 2442
1369int 2443int ecb_cold
1370ev_version_minor (void) 2444ev_version_minor (void) EV_THROW
1371{ 2445{
1372 return EV_VERSION_MINOR; 2446 return EV_VERSION_MINOR;
1373} 2447}
1374 2448
1375/* return true if we are running with elevated privileges and should ignore env variables */ 2449/* return true if we are running with elevated privileges and should ignore env variables */
1376int inline_size 2450int inline_size ecb_cold
1377enable_secure (void) 2451enable_secure (void)
1378{ 2452{
1379#ifdef _WIN32 2453#ifdef _WIN32
1380 return 0; 2454 return 0;
1381#else 2455#else
1382 return getuid () != geteuid () 2456 return getuid () != geteuid ()
1383 || getgid () != getegid (); 2457 || getgid () != getegid ();
1384#endif 2458#endif
1385} 2459}
1386 2460
1387unsigned int 2461unsigned int ecb_cold
1388ev_supported_backends (void) 2462ev_supported_backends (void) EV_THROW
1389{ 2463{
1390 unsigned int flags = 0; 2464 unsigned int flags = 0;
1391 2465
1392 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2466 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1393 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2467 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1396 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2470 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1397 2471
1398 return flags; 2472 return flags;
1399} 2473}
1400 2474
1401unsigned int 2475unsigned int ecb_cold
1402ev_recommended_backends (void) 2476ev_recommended_backends (void) EV_THROW
1403{ 2477{
1404 unsigned int flags = ev_supported_backends (); 2478 unsigned int flags = ev_supported_backends ();
1405 2479
1406#ifndef __NetBSD__ 2480#ifndef __NetBSD__
1407 /* kqueue is borked on everything but netbsd apparently */ 2481 /* kqueue is borked on everything but netbsd apparently */
… …
1411#ifdef __APPLE__ 2485#ifdef __APPLE__
1412 /* only select works correctly on that "unix-certified" platform */ 2486 /* only select works correctly on that "unix-certified" platform */
1413 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2487 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1414 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2488 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1415#endif 2489#endif
2490#ifdef __FreeBSD__
2491 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2492#endif
1416 2493
1417 return flags; 2494 return flags;
1418} 2495}
1419 2496
2497unsigned int ecb_cold
2498ev_embeddable_backends (void) EV_THROW
2499{
2500 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2501
2502 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2503 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2504 flags &= ~EVBACKEND_EPOLL;
2505
2506 return flags;
2507}
2508
1420unsigned int 2509unsigned int
1421ev_embeddable_backends (void) 2510ev_backend (EV_P) EV_THROW
1422{ 2511{
1423 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2512 return backend;
1424
1425 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1426 /* please fix it and tell me how to detect the fix */
1427 flags &= ~EVBACKEND_EPOLL;
1428
1429 return flags;
1430} 2513}
1431 2514
2515#if EV_FEATURE_API
1432unsigned int 2516unsigned int
1433ev_backend (EV_P) 2517ev_iteration (EV_P) EV_THROW
1434{ 2518{
1435 return backend; 2519 return loop_count;
1436} 2520}
1437 2521
1438#if EV_MINIMAL < 2
1439unsigned int 2522unsigned int
1440ev_loop_count (EV_P) 2523ev_depth (EV_P) EV_THROW
1441{
1442 return loop_count;
1443}
1444
1445unsigned int
1446ev_loop_depth (EV_P)
1447{ 2524{
1448 return loop_depth; 2525 return loop_depth;
1449} 2526}
1450 2527
1451void 2528void
1452ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2529ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1453{ 2530{
1454 io_blocktime = interval; 2531 io_blocktime = interval;
1455} 2532}
1456 2533
1457void 2534void
1458ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2535ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1459{ 2536{
1460 timeout_blocktime = interval; 2537 timeout_blocktime = interval;
1461} 2538}
1462 2539
1463void 2540void
1464ev_set_userdata (EV_P_ void *data) 2541ev_set_userdata (EV_P_ void *data) EV_THROW
1465{ 2542{
1466 userdata = data; 2543 userdata = data;
1467} 2544}
1468 2545
1469void * 2546void *
1470ev_userdata (EV_P) 2547ev_userdata (EV_P) EV_THROW
1471{ 2548{
1472 return userdata; 2549 return userdata;
1473} 2550}
1474 2551
2552void
1475void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2553ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1476{ 2554{
1477 invoke_cb = invoke_pending_cb; 2555 invoke_cb = invoke_pending_cb;
1478} 2556}
1479 2557
2558void
1480void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2559ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1481{ 2560{
1482 release_cb = release; 2561 release_cb = release;
1483 acquire_cb = acquire; 2562 acquire_cb = acquire;
1484} 2563}
1485#endif 2564#endif
1486 2565
1487/* initialise a loop structure, must be zero-initialised */ 2566/* initialise a loop structure, must be zero-initialised */
1488static void noinline 2567static void noinline ecb_cold
1489loop_init (EV_P_ unsigned int flags) 2568loop_init (EV_P_ unsigned int flags) EV_THROW
1490{ 2569{
1491 if (!backend) 2570 if (!backend)
1492 { 2571 {
2572 origflags = flags;
2573
1493#if EV_USE_REALTIME 2574#if EV_USE_REALTIME
1494 if (!have_realtime) 2575 if (!have_realtime)
1495 { 2576 {
1496 struct timespec ts; 2577 struct timespec ts;
1497 2578
… …
1508 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2589 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1509 have_monotonic = 1; 2590 have_monotonic = 1;
1510 } 2591 }
1511#endif 2592#endif
1512 2593
1513 ev_rt_now = ev_time ();
1514 mn_now = get_clock ();
1515 now_floor = mn_now;
1516 rtmn_diff = ev_rt_now - mn_now;
1517#if EV_MINIMAL < 2
1518 invoke_cb = ev_invoke_pending;
1519#endif
1520
1521 io_blocktime = 0.;
1522 timeout_blocktime = 0.;
1523 backend = 0;
1524 backend_fd = -1;
1525 gotasync = 0;
1526#if EV_USE_INOTIFY
1527 fs_fd = -2;
1528#endif
1529#if EV_USE_SIGNALFD
1530 sigfd = -2;
1531#endif
1532
1533 /* pid check not overridable via env */ 2594 /* pid check not overridable via env */
1534#ifndef _WIN32 2595#ifndef _WIN32
1535 if (flags & EVFLAG_FORKCHECK) 2596 if (flags & EVFLAG_FORKCHECK)
1536 curpid = getpid (); 2597 curpid = getpid ();
1537#endif 2598#endif
… …
1539 if (!(flags & EVFLAG_NOENV) 2600 if (!(flags & EVFLAG_NOENV)
1540 && !enable_secure () 2601 && !enable_secure ()
1541 && getenv ("LIBEV_FLAGS")) 2602 && getenv ("LIBEV_FLAGS"))
1542 flags = atoi (getenv ("LIBEV_FLAGS")); 2603 flags = atoi (getenv ("LIBEV_FLAGS"));
1543 2604
1544 if (!(flags & 0x0000ffffU)) 2605 ev_rt_now = ev_time ();
2606 mn_now = get_clock ();
2607 now_floor = mn_now;
2608 rtmn_diff = ev_rt_now - mn_now;
2609#if EV_FEATURE_API
2610 invoke_cb = ev_invoke_pending;
2611#endif
2612
2613 io_blocktime = 0.;
2614 timeout_blocktime = 0.;
2615 backend = 0;
2616 backend_fd = -1;
2617 sig_pending = 0;
2618#if EV_ASYNC_ENABLE
2619 async_pending = 0;
2620#endif
2621 pipe_write_skipped = 0;
2622 pipe_write_wanted = 0;
2623 evpipe [0] = -1;
2624 evpipe [1] = -1;
2625#if EV_USE_INOTIFY
2626 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2627#endif
2628#if EV_USE_SIGNALFD
2629 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2630#endif
2631
2632 if (!(flags & EVBACKEND_MASK))
1545 flags |= ev_recommended_backends (); 2633 flags |= ev_recommended_backends ();
1546 2634
2635#if EV_USE_IOCP
2636 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2637#endif
1547#if EV_USE_PORT 2638#if EV_USE_PORT
1548 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2639 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1549#endif 2640#endif
1550#if EV_USE_KQUEUE 2641#if EV_USE_KQUEUE
1551 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2642 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1560 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2651 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1561#endif 2652#endif
1562 2653
1563 ev_prepare_init (&pending_w, pendingcb); 2654 ev_prepare_init (&pending_w, pendingcb);
1564 2655
2656#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1565 ev_init (&pipe_w, pipecb); 2657 ev_init (&pipe_w, pipecb);
1566 ev_set_priority (&pipe_w, EV_MAXPRI); 2658 ev_set_priority (&pipe_w, EV_MAXPRI);
2659#endif
1567 } 2660 }
1568} 2661}
1569 2662
1570/* free up a loop structure */ 2663/* free up a loop structure */
1571static void noinline 2664void ecb_cold
1572loop_destroy (EV_P) 2665ev_loop_destroy (EV_P)
1573{ 2666{
1574 int i; 2667 int i;
2668
2669#if EV_MULTIPLICITY
2670 /* mimic free (0) */
2671 if (!EV_A)
2672 return;
2673#endif
2674
2675#if EV_CLEANUP_ENABLE
2676 /* queue cleanup watchers (and execute them) */
2677 if (expect_false (cleanupcnt))
2678 {
2679 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2680 EV_INVOKE_PENDING;
2681 }
2682#endif
2683
2684#if EV_CHILD_ENABLE
2685 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2686 {
2687 ev_ref (EV_A); /* child watcher */
2688 ev_signal_stop (EV_A_ &childev);
2689 }
2690#endif
1575 2691
1576 if (ev_is_active (&pipe_w)) 2692 if (ev_is_active (&pipe_w))
1577 { 2693 {
1578 /*ev_ref (EV_A);*/ 2694 /*ev_ref (EV_A);*/
1579 /*ev_io_stop (EV_A_ &pipe_w);*/ 2695 /*ev_io_stop (EV_A_ &pipe_w);*/
1580 2696
1581#if EV_USE_EVENTFD 2697 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1582 if (evfd >= 0) 2698 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1583 close (evfd);
1584#endif
1585
1586 if (evpipe [0] >= 0)
1587 {
1588 close (evpipe [0]);
1589 close (evpipe [1]);
1590 }
1591 } 2699 }
1592 2700
1593#if EV_USE_SIGNALFD 2701#if EV_USE_SIGNALFD
1594 if (ev_is_active (&sigfd_w)) 2702 if (ev_is_active (&sigfd_w))
1595 {
1596 /*ev_ref (EV_A);*/
1597 /*ev_io_stop (EV_A_ &sigfd_w);*/
1598
1599 close (sigfd); 2703 close (sigfd);
1600 }
1601#endif 2704#endif
1602 2705
1603#if EV_USE_INOTIFY 2706#if EV_USE_INOTIFY
1604 if (fs_fd >= 0) 2707 if (fs_fd >= 0)
1605 close (fs_fd); 2708 close (fs_fd);
1606#endif 2709#endif
1607 2710
1608 if (backend_fd >= 0) 2711 if (backend_fd >= 0)
1609 close (backend_fd); 2712 close (backend_fd);
1610 2713
2714#if EV_USE_IOCP
2715 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2716#endif
1611#if EV_USE_PORT 2717#if EV_USE_PORT
1612 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2718 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1613#endif 2719#endif
1614#if EV_USE_KQUEUE 2720#if EV_USE_KQUEUE
1615 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2721 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1630#if EV_IDLE_ENABLE 2736#if EV_IDLE_ENABLE
1631 array_free (idle, [i]); 2737 array_free (idle, [i]);
1632#endif 2738#endif
1633 } 2739 }
1634 2740
1635 ev_free (anfds); anfdmax = 0; 2741 ev_free (anfds); anfds = 0; anfdmax = 0;
1636 2742
1637 /* have to use the microsoft-never-gets-it-right macro */ 2743 /* have to use the microsoft-never-gets-it-right macro */
1638 array_free (rfeed, EMPTY); 2744 array_free (rfeed, EMPTY);
1639 array_free (fdchange, EMPTY); 2745 array_free (fdchange, EMPTY);
1640 array_free (timer, EMPTY); 2746 array_free (timer, EMPTY);
… …
1642 array_free (periodic, EMPTY); 2748 array_free (periodic, EMPTY);
1643#endif 2749#endif
1644#if EV_FORK_ENABLE 2750#if EV_FORK_ENABLE
1645 array_free (fork, EMPTY); 2751 array_free (fork, EMPTY);
1646#endif 2752#endif
2753#if EV_CLEANUP_ENABLE
2754 array_free (cleanup, EMPTY);
2755#endif
1647 array_free (prepare, EMPTY); 2756 array_free (prepare, EMPTY);
1648 array_free (check, EMPTY); 2757 array_free (check, EMPTY);
1649#if EV_ASYNC_ENABLE 2758#if EV_ASYNC_ENABLE
1650 array_free (async, EMPTY); 2759 array_free (async, EMPTY);
1651#endif 2760#endif
1652 2761
1653 backend = 0; 2762 backend = 0;
2763
2764#if EV_MULTIPLICITY
2765 if (ev_is_default_loop (EV_A))
2766#endif
2767 ev_default_loop_ptr = 0;
2768#if EV_MULTIPLICITY
2769 else
2770 ev_free (EV_A);
2771#endif
1654} 2772}
1655 2773
1656#if EV_USE_INOTIFY 2774#if EV_USE_INOTIFY
1657inline_size void infy_fork (EV_P); 2775inline_size void infy_fork (EV_P);
1658#endif 2776#endif
… …
1671#endif 2789#endif
1672#if EV_USE_INOTIFY 2790#if EV_USE_INOTIFY
1673 infy_fork (EV_A); 2791 infy_fork (EV_A);
1674#endif 2792#endif
1675 2793
2794#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1676 if (ev_is_active (&pipe_w)) 2795 if (ev_is_active (&pipe_w))
1677 { 2796 {
1678 /* this "locks" the handlers against writing to the pipe */ 2797 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1679 /* while we modify the fd vars */
1680 gotsig = 1;
1681#if EV_ASYNC_ENABLE
1682 gotasync = 1;
1683#endif
1684 2798
1685 ev_ref (EV_A); 2799 ev_ref (EV_A);
1686 ev_io_stop (EV_A_ &pipe_w); 2800 ev_io_stop (EV_A_ &pipe_w);
1687 2801
1688#if EV_USE_EVENTFD
1689 if (evfd >= 0)
1690 close (evfd);
1691#endif
1692
1693 if (evpipe [0] >= 0) 2802 if (evpipe [0] >= 0)
1694 { 2803 EV_WIN32_CLOSE_FD (evpipe [0]);
1695 close (evpipe [0]);
1696 close (evpipe [1]);
1697 }
1698 2804
1699 evpipe_init (EV_A); 2805 evpipe_init (EV_A);
1700 /* now iterate over everything, in case we missed something */ 2806 /* iterate over everything, in case we missed something before */
1701 pipecb (EV_A_ &pipe_w, EV_READ); 2807 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1702 } 2808 }
2809#endif
1703 2810
1704 postfork = 0; 2811 postfork = 0;
1705} 2812}
1706 2813
1707#if EV_MULTIPLICITY 2814#if EV_MULTIPLICITY
1708 2815
1709struct ev_loop * 2816struct ev_loop * ecb_cold
1710ev_loop_new (unsigned int flags) 2817ev_loop_new (unsigned int flags) EV_THROW
1711{ 2818{
1712 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2819 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1713 2820
1714 memset (loop, 0, sizeof (struct ev_loop)); 2821 memset (EV_A, 0, sizeof (struct ev_loop));
1715 loop_init (EV_A_ flags); 2822 loop_init (EV_A_ flags);
1716 2823
1717 if (ev_backend (EV_A)) 2824 if (ev_backend (EV_A))
1718 return loop; 2825 return EV_A;
1719 2826
2827 ev_free (EV_A);
1720 return 0; 2828 return 0;
1721} 2829}
1722 2830
1723void
1724ev_loop_destroy (EV_P)
1725{
1726 loop_destroy (EV_A);
1727 ev_free (loop);
1728}
1729
1730void
1731ev_loop_fork (EV_P)
1732{
1733 postfork = 1; /* must be in line with ev_default_fork */
1734}
1735#endif /* multiplicity */ 2831#endif /* multiplicity */
1736 2832
1737#if EV_VERIFY 2833#if EV_VERIFY
1738static void noinline 2834static void noinline ecb_cold
1739verify_watcher (EV_P_ W w) 2835verify_watcher (EV_P_ W w)
1740{ 2836{
1741 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2837 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1742 2838
1743 if (w->pending) 2839 if (w->pending)
1744 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2840 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1745} 2841}
1746 2842
1747static void noinline 2843static void noinline ecb_cold
1748verify_heap (EV_P_ ANHE *heap, int N) 2844verify_heap (EV_P_ ANHE *heap, int N)
1749{ 2845{
1750 int i; 2846 int i;
1751 2847
1752 for (i = HEAP0; i < N + HEAP0; ++i) 2848 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1757 2853
1758 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2854 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1759 } 2855 }
1760} 2856}
1761 2857
1762static void noinline 2858static void noinline ecb_cold
1763array_verify (EV_P_ W *ws, int cnt) 2859array_verify (EV_P_ W *ws, int cnt)
1764{ 2860{
1765 while (cnt--) 2861 while (cnt--)
1766 { 2862 {
1767 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2863 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1768 verify_watcher (EV_A_ ws [cnt]); 2864 verify_watcher (EV_A_ ws [cnt]);
1769 } 2865 }
1770} 2866}
1771#endif 2867#endif
1772 2868
1773#if EV_MINIMAL < 2 2869#if EV_FEATURE_API
1774void 2870void ecb_cold
1775ev_loop_verify (EV_P) 2871ev_verify (EV_P) EV_THROW
1776{ 2872{
1777#if EV_VERIFY 2873#if EV_VERIFY
1778 int i; 2874 int i;
1779 WL w; 2875 WL w, w2;
1780 2876
1781 assert (activecnt >= -1); 2877 assert (activecnt >= -1);
1782 2878
1783 assert (fdchangemax >= fdchangecnt); 2879 assert (fdchangemax >= fdchangecnt);
1784 for (i = 0; i < fdchangecnt; ++i) 2880 for (i = 0; i < fdchangecnt; ++i)
1785 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2881 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1786 2882
1787 assert (anfdmax >= 0); 2883 assert (anfdmax >= 0);
1788 for (i = 0; i < anfdmax; ++i) 2884 for (i = 0; i < anfdmax; ++i)
2885 {
2886 int j = 0;
2887
1789 for (w = anfds [i].head; w; w = w->next) 2888 for (w = w2 = anfds [i].head; w; w = w->next)
1790 { 2889 {
1791 verify_watcher (EV_A_ (W)w); 2890 verify_watcher (EV_A_ (W)w);
2891
2892 if (j++ & 1)
2893 {
2894 assert (("libev: io watcher list contains a loop", w != w2));
2895 w2 = w2->next;
2896 }
2897
1792 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2898 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1793 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2899 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1794 } 2900 }
2901 }
1795 2902
1796 assert (timermax >= timercnt); 2903 assert (timermax >= timercnt);
1797 verify_heap (EV_A_ timers, timercnt); 2904 verify_heap (EV_A_ timers, timercnt);
1798 2905
1799#if EV_PERIODIC_ENABLE 2906#if EV_PERIODIC_ENABLE
… …
1814#if EV_FORK_ENABLE 2921#if EV_FORK_ENABLE
1815 assert (forkmax >= forkcnt); 2922 assert (forkmax >= forkcnt);
1816 array_verify (EV_A_ (W *)forks, forkcnt); 2923 array_verify (EV_A_ (W *)forks, forkcnt);
1817#endif 2924#endif
1818 2925
2926#if EV_CLEANUP_ENABLE
2927 assert (cleanupmax >= cleanupcnt);
2928 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2929#endif
2930
1819#if EV_ASYNC_ENABLE 2931#if EV_ASYNC_ENABLE
1820 assert (asyncmax >= asynccnt); 2932 assert (asyncmax >= asynccnt);
1821 array_verify (EV_A_ (W *)asyncs, asynccnt); 2933 array_verify (EV_A_ (W *)asyncs, asynccnt);
1822#endif 2934#endif
1823 2935
2936#if EV_PREPARE_ENABLE
1824 assert (preparemax >= preparecnt); 2937 assert (preparemax >= preparecnt);
1825 array_verify (EV_A_ (W *)prepares, preparecnt); 2938 array_verify (EV_A_ (W *)prepares, preparecnt);
2939#endif
1826 2940
2941#if EV_CHECK_ENABLE
1827 assert (checkmax >= checkcnt); 2942 assert (checkmax >= checkcnt);
1828 array_verify (EV_A_ (W *)checks, checkcnt); 2943 array_verify (EV_A_ (W *)checks, checkcnt);
2944#endif
1829 2945
1830# if 0 2946# if 0
2947#if EV_CHILD_ENABLE
1831 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2948 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1832 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2949 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2950#endif
1833# endif 2951# endif
1834#endif 2952#endif
1835} 2953}
1836#endif 2954#endif
1837 2955
1838#if EV_MULTIPLICITY 2956#if EV_MULTIPLICITY
1839struct ev_loop * 2957struct ev_loop * ecb_cold
1840ev_default_loop_init (unsigned int flags)
1841#else 2958#else
1842int 2959int
2960#endif
1843ev_default_loop (unsigned int flags) 2961ev_default_loop (unsigned int flags) EV_THROW
1844#endif
1845{ 2962{
1846 if (!ev_default_loop_ptr) 2963 if (!ev_default_loop_ptr)
1847 { 2964 {
1848#if EV_MULTIPLICITY 2965#if EV_MULTIPLICITY
1849 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2966 EV_P = ev_default_loop_ptr = &default_loop_struct;
1850#else 2967#else
1851 ev_default_loop_ptr = 1; 2968 ev_default_loop_ptr = 1;
1852#endif 2969#endif
1853 2970
1854 loop_init (EV_A_ flags); 2971 loop_init (EV_A_ flags);
1855 2972
1856 if (ev_backend (EV_A)) 2973 if (ev_backend (EV_A))
1857 { 2974 {
1858#ifndef _WIN32 2975#if EV_CHILD_ENABLE
1859 ev_signal_init (&childev, childcb, SIGCHLD); 2976 ev_signal_init (&childev, childcb, SIGCHLD);
1860 ev_set_priority (&childev, EV_MAXPRI); 2977 ev_set_priority (&childev, EV_MAXPRI);
1861 ev_signal_start (EV_A_ &childev); 2978 ev_signal_start (EV_A_ &childev);
1862 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2979 ev_unref (EV_A); /* child watcher should not keep loop alive */
1863#endif 2980#endif
… …
1868 2985
1869 return ev_default_loop_ptr; 2986 return ev_default_loop_ptr;
1870} 2987}
1871 2988
1872void 2989void
1873ev_default_destroy (void) 2990ev_loop_fork (EV_P) EV_THROW
1874{ 2991{
1875#if EV_MULTIPLICITY 2992 postfork = 1;
1876 struct ev_loop *loop = ev_default_loop_ptr;
1877#endif
1878
1879 ev_default_loop_ptr = 0;
1880
1881#ifndef _WIN32
1882 ev_ref (EV_A); /* child watcher */
1883 ev_signal_stop (EV_A_ &childev);
1884#endif
1885
1886 loop_destroy (EV_A);
1887}
1888
1889void
1890ev_default_fork (void)
1891{
1892#if EV_MULTIPLICITY
1893 struct ev_loop *loop = ev_default_loop_ptr;
1894#endif
1895
1896 postfork = 1; /* must be in line with ev_loop_fork */
1897} 2993}
1898 2994
1899/*****************************************************************************/ 2995/*****************************************************************************/
1900 2996
1901void 2997void
… …
1903{ 2999{
1904 EV_CB_INVOKE ((W)w, revents); 3000 EV_CB_INVOKE ((W)w, revents);
1905} 3001}
1906 3002
1907unsigned int 3003unsigned int
1908ev_pending_count (EV_P) 3004ev_pending_count (EV_P) EV_THROW
1909{ 3005{
1910 int pri; 3006 int pri;
1911 unsigned int count = 0; 3007 unsigned int count = 0;
1912 3008
1913 for (pri = NUMPRI; pri--; ) 3009 for (pri = NUMPRI; pri--; )
… …
1917} 3013}
1918 3014
1919void noinline 3015void noinline
1920ev_invoke_pending (EV_P) 3016ev_invoke_pending (EV_P)
1921{ 3017{
1922 int pri; 3018 pendingpri = NUMPRI;
1923 3019
1924 for (pri = NUMPRI; pri--; ) 3020 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3021 {
3022 --pendingpri;
3023
1925 while (pendingcnt [pri]) 3024 while (pendingcnt [pendingpri])
1926 { 3025 {
1927 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3026 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1928 3027
1929 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1930 /* ^ this is no longer true, as pending_w could be here */
1931
1932 p->w->pending = 0; 3028 p->w->pending = 0;
1933 EV_CB_INVOKE (p->w, p->events); 3029 EV_CB_INVOKE (p->w, p->events);
1934 EV_FREQUENT_CHECK; 3030 EV_FREQUENT_CHECK;
1935 } 3031 }
3032 }
1936} 3033}
1937 3034
1938#if EV_IDLE_ENABLE 3035#if EV_IDLE_ENABLE
1939/* make idle watchers pending. this handles the "call-idle */ 3036/* make idle watchers pending. this handles the "call-idle */
1940/* only when higher priorities are idle" logic */ 3037/* only when higher priorities are idle" logic */
… …
1992 EV_FREQUENT_CHECK; 3089 EV_FREQUENT_CHECK;
1993 feed_reverse (EV_A_ (W)w); 3090 feed_reverse (EV_A_ (W)w);
1994 } 3091 }
1995 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3092 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1996 3093
1997 feed_reverse_done (EV_A_ EV_TIMEOUT); 3094 feed_reverse_done (EV_A_ EV_TIMER);
1998 } 3095 }
1999} 3096}
2000 3097
2001#if EV_PERIODIC_ENABLE 3098#if EV_PERIODIC_ENABLE
3099
3100static void noinline
3101periodic_recalc (EV_P_ ev_periodic *w)
3102{
3103 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3104 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3105
3106 /* the above almost always errs on the low side */
3107 while (at <= ev_rt_now)
3108 {
3109 ev_tstamp nat = at + w->interval;
3110
3111 /* when resolution fails us, we use ev_rt_now */
3112 if (expect_false (nat == at))
3113 {
3114 at = ev_rt_now;
3115 break;
3116 }
3117
3118 at = nat;
3119 }
3120
3121 ev_at (w) = at;
3122}
3123
2002/* make periodics pending */ 3124/* make periodics pending */
2003inline_size void 3125inline_size void
2004periodics_reify (EV_P) 3126periodics_reify (EV_P)
2005{ 3127{
2006 EV_FREQUENT_CHECK; 3128 EV_FREQUENT_CHECK;
2007 3129
2008 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3130 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2009 { 3131 {
2010 int feed_count = 0;
2011
2012 do 3132 do
2013 { 3133 {
2014 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3134 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2015 3135
2016 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3136 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2025 ANHE_at_cache (periodics [HEAP0]); 3145 ANHE_at_cache (periodics [HEAP0]);
2026 downheap (periodics, periodiccnt, HEAP0); 3146 downheap (periodics, periodiccnt, HEAP0);
2027 } 3147 }
2028 else if (w->interval) 3148 else if (w->interval)
2029 { 3149 {
2030 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3150 periodic_recalc (EV_A_ w);
2031 /* if next trigger time is not sufficiently in the future, put it there */
2032 /* this might happen because of floating point inexactness */
2033 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2034 {
2035 ev_at (w) += w->interval;
2036
2037 /* if interval is unreasonably low we might still have a time in the past */
2038 /* so correct this. this will make the periodic very inexact, but the user */
2039 /* has effectively asked to get triggered more often than possible */
2040 if (ev_at (w) < ev_rt_now)
2041 ev_at (w) = ev_rt_now;
2042 }
2043
2044 ANHE_at_cache (periodics [HEAP0]); 3151 ANHE_at_cache (periodics [HEAP0]);
2045 downheap (periodics, periodiccnt, HEAP0); 3152 downheap (periodics, periodiccnt, HEAP0);
2046 } 3153 }
2047 else 3154 else
2048 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3155 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2055 feed_reverse_done (EV_A_ EV_PERIODIC); 3162 feed_reverse_done (EV_A_ EV_PERIODIC);
2056 } 3163 }
2057} 3164}
2058 3165
2059/* simply recalculate all periodics */ 3166/* simply recalculate all periodics */
2060/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3167/* TODO: maybe ensure that at least one event happens when jumping forward? */
2061static void noinline 3168static void noinline ecb_cold
2062periodics_reschedule (EV_P) 3169periodics_reschedule (EV_P)
2063{ 3170{
2064 int i; 3171 int i;
2065 3172
2066 /* adjust periodics after time jump */ 3173 /* adjust periodics after time jump */
… …
2069 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3176 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2070 3177
2071 if (w->reschedule_cb) 3178 if (w->reschedule_cb)
2072 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3179 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073 else if (w->interval) 3180 else if (w->interval)
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3181 periodic_recalc (EV_A_ w);
2075 3182
2076 ANHE_at_cache (periodics [i]); 3183 ANHE_at_cache (periodics [i]);
2077 } 3184 }
2078 3185
2079 reheap (periodics, periodiccnt); 3186 reheap (periodics, periodiccnt);
2080} 3187}
2081#endif 3188#endif
2082 3189
2083/* adjust all timers by a given offset */ 3190/* adjust all timers by a given offset */
2084static void noinline 3191static void noinline ecb_cold
2085timers_reschedule (EV_P_ ev_tstamp adjust) 3192timers_reschedule (EV_P_ ev_tstamp adjust)
2086{ 3193{
2087 int i; 3194 int i;
2088 3195
2089 for (i = 0; i < timercnt; ++i) 3196 for (i = 0; i < timercnt; ++i)
… …
2093 ANHE_at_cache (*he); 3200 ANHE_at_cache (*he);
2094 } 3201 }
2095} 3202}
2096 3203
2097/* fetch new monotonic and realtime times from the kernel */ 3204/* fetch new monotonic and realtime times from the kernel */
2098/* also detetc if there was a timejump, and act accordingly */ 3205/* also detect if there was a timejump, and act accordingly */
2099inline_speed void 3206inline_speed void
2100time_update (EV_P_ ev_tstamp max_block) 3207time_update (EV_P_ ev_tstamp max_block)
2101{ 3208{
2102#if EV_USE_MONOTONIC 3209#if EV_USE_MONOTONIC
2103 if (expect_true (have_monotonic)) 3210 if (expect_true (have_monotonic))
… …
2126 * doesn't hurt either as we only do this on time-jumps or 3233 * doesn't hurt either as we only do this on time-jumps or
2127 * in the unlikely event of having been preempted here. 3234 * in the unlikely event of having been preempted here.
2128 */ 3235 */
2129 for (i = 4; --i; ) 3236 for (i = 4; --i; )
2130 { 3237 {
3238 ev_tstamp diff;
2131 rtmn_diff = ev_rt_now - mn_now; 3239 rtmn_diff = ev_rt_now - mn_now;
2132 3240
3241 diff = odiff - rtmn_diff;
3242
2133 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3243 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2134 return; /* all is well */ 3244 return; /* all is well */
2135 3245
2136 ev_rt_now = ev_time (); 3246 ev_rt_now = ev_time ();
2137 mn_now = get_clock (); 3247 mn_now = get_clock ();
2138 now_floor = mn_now; 3248 now_floor = mn_now;
… …
2160 3270
2161 mn_now = ev_rt_now; 3271 mn_now = ev_rt_now;
2162 } 3272 }
2163} 3273}
2164 3274
2165void 3275int
2166ev_loop (EV_P_ int flags) 3276ev_run (EV_P_ int flags)
2167{ 3277{
2168#if EV_MINIMAL < 2 3278#if EV_FEATURE_API
2169 ++loop_depth; 3279 ++loop_depth;
2170#endif 3280#endif
2171 3281
2172 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3282 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2173 3283
2174 loop_done = EVUNLOOP_CANCEL; 3284 loop_done = EVBREAK_CANCEL;
2175 3285
2176 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3286 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2177 3287
2178 do 3288 do
2179 { 3289 {
2180#if EV_VERIFY >= 2 3290#if EV_VERIFY >= 2
2181 ev_loop_verify (EV_A); 3291 ev_verify (EV_A);
2182#endif 3292#endif
2183 3293
2184#ifndef _WIN32 3294#ifndef _WIN32
2185 if (expect_false (curpid)) /* penalise the forking check even more */ 3295 if (expect_false (curpid)) /* penalise the forking check even more */
2186 if (expect_false (getpid () != curpid)) 3296 if (expect_false (getpid () != curpid))
… …
2198 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3308 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2199 EV_INVOKE_PENDING; 3309 EV_INVOKE_PENDING;
2200 } 3310 }
2201#endif 3311#endif
2202 3312
3313#if EV_PREPARE_ENABLE
2203 /* queue prepare watchers (and execute them) */ 3314 /* queue prepare watchers (and execute them) */
2204 if (expect_false (preparecnt)) 3315 if (expect_false (preparecnt))
2205 { 3316 {
2206 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3317 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2207 EV_INVOKE_PENDING; 3318 EV_INVOKE_PENDING;
2208 } 3319 }
3320#endif
2209 3321
2210 if (expect_false (loop_done)) 3322 if (expect_false (loop_done))
2211 break; 3323 break;
2212 3324
2213 /* we might have forked, so reify kernel state if necessary */ 3325 /* we might have forked, so reify kernel state if necessary */
… …
2220 /* calculate blocking time */ 3332 /* calculate blocking time */
2221 { 3333 {
2222 ev_tstamp waittime = 0.; 3334 ev_tstamp waittime = 0.;
2223 ev_tstamp sleeptime = 0.; 3335 ev_tstamp sleeptime = 0.;
2224 3336
3337 /* remember old timestamp for io_blocktime calculation */
3338 ev_tstamp prev_mn_now = mn_now;
3339
3340 /* update time to cancel out callback processing overhead */
3341 time_update (EV_A_ 1e100);
3342
3343 /* from now on, we want a pipe-wake-up */
3344 pipe_write_wanted = 1;
3345
3346 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3347
2225 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3348 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2226 { 3349 {
2227 /* remember old timestamp for io_blocktime calculation */
2228 ev_tstamp prev_mn_now = mn_now;
2229
2230 /* update time to cancel out callback processing overhead */
2231 time_update (EV_A_ 1e100);
2232
2233 waittime = MAX_BLOCKTIME; 3350 waittime = MAX_BLOCKTIME;
2234 3351
2235 if (timercnt) 3352 if (timercnt)
2236 { 3353 {
2237 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3354 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2238 if (waittime > to) waittime = to; 3355 if (waittime > to) waittime = to;
2239 } 3356 }
2240 3357
2241#if EV_PERIODIC_ENABLE 3358#if EV_PERIODIC_ENABLE
2242 if (periodiccnt) 3359 if (periodiccnt)
2243 { 3360 {
2244 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3361 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2245 if (waittime > to) waittime = to; 3362 if (waittime > to) waittime = to;
2246 } 3363 }
2247#endif 3364#endif
2248 3365
2249 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3366 /* don't let timeouts decrease the waittime below timeout_blocktime */
2250 if (expect_false (waittime < timeout_blocktime)) 3367 if (expect_false (waittime < timeout_blocktime))
2251 waittime = timeout_blocktime; 3368 waittime = timeout_blocktime;
3369
3370 /* at this point, we NEED to wait, so we have to ensure */
3371 /* to pass a minimum nonzero value to the backend */
3372 if (expect_false (waittime < backend_mintime))
3373 waittime = backend_mintime;
2252 3374
2253 /* extra check because io_blocktime is commonly 0 */ 3375 /* extra check because io_blocktime is commonly 0 */
2254 if (expect_false (io_blocktime)) 3376 if (expect_false (io_blocktime))
2255 { 3377 {
2256 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3378 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2257 3379
2258 if (sleeptime > waittime - backend_fudge) 3380 if (sleeptime > waittime - backend_mintime)
2259 sleeptime = waittime - backend_fudge; 3381 sleeptime = waittime - backend_mintime;
2260 3382
2261 if (expect_true (sleeptime > 0.)) 3383 if (expect_true (sleeptime > 0.))
2262 { 3384 {
2263 ev_sleep (sleeptime); 3385 ev_sleep (sleeptime);
2264 waittime -= sleeptime; 3386 waittime -= sleeptime;
2265 } 3387 }
2266 } 3388 }
2267 } 3389 }
2268 3390
2269#if EV_MINIMAL < 2 3391#if EV_FEATURE_API
2270 ++loop_count; 3392 ++loop_count;
2271#endif 3393#endif
2272 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3394 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2273 backend_poll (EV_A_ waittime); 3395 backend_poll (EV_A_ waittime);
2274 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3396 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3397
3398 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3399
3400 ECB_MEMORY_FENCE_ACQUIRE;
3401 if (pipe_write_skipped)
3402 {
3403 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3404 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3405 }
3406
2275 3407
2276 /* update ev_rt_now, do magic */ 3408 /* update ev_rt_now, do magic */
2277 time_update (EV_A_ waittime + sleeptime); 3409 time_update (EV_A_ waittime + sleeptime);
2278 } 3410 }
2279 3411
… …
2286#if EV_IDLE_ENABLE 3418#if EV_IDLE_ENABLE
2287 /* queue idle watchers unless other events are pending */ 3419 /* queue idle watchers unless other events are pending */
2288 idle_reify (EV_A); 3420 idle_reify (EV_A);
2289#endif 3421#endif
2290 3422
3423#if EV_CHECK_ENABLE
2291 /* queue check watchers, to be executed first */ 3424 /* queue check watchers, to be executed first */
2292 if (expect_false (checkcnt)) 3425 if (expect_false (checkcnt))
2293 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3426 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3427#endif
2294 3428
2295 EV_INVOKE_PENDING; 3429 EV_INVOKE_PENDING;
2296 } 3430 }
2297 while (expect_true ( 3431 while (expect_true (
2298 activecnt 3432 activecnt
2299 && !loop_done 3433 && !loop_done
2300 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3434 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2301 )); 3435 ));
2302 3436
2303 if (loop_done == EVUNLOOP_ONE) 3437 if (loop_done == EVBREAK_ONE)
2304 loop_done = EVUNLOOP_CANCEL; 3438 loop_done = EVBREAK_CANCEL;
2305 3439
2306#if EV_MINIMAL < 2 3440#if EV_FEATURE_API
2307 --loop_depth; 3441 --loop_depth;
2308#endif 3442#endif
3443
3444 return activecnt;
2309} 3445}
2310 3446
2311void 3447void
2312ev_unloop (EV_P_ int how) 3448ev_break (EV_P_ int how) EV_THROW
2313{ 3449{
2314 loop_done = how; 3450 loop_done = how;
2315} 3451}
2316 3452
2317void 3453void
2318ev_ref (EV_P) 3454ev_ref (EV_P) EV_THROW
2319{ 3455{
2320 ++activecnt; 3456 ++activecnt;
2321} 3457}
2322 3458
2323void 3459void
2324ev_unref (EV_P) 3460ev_unref (EV_P) EV_THROW
2325{ 3461{
2326 --activecnt; 3462 --activecnt;
2327} 3463}
2328 3464
2329void 3465void
2330ev_now_update (EV_P) 3466ev_now_update (EV_P) EV_THROW
2331{ 3467{
2332 time_update (EV_A_ 1e100); 3468 time_update (EV_A_ 1e100);
2333} 3469}
2334 3470
2335void 3471void
2336ev_suspend (EV_P) 3472ev_suspend (EV_P) EV_THROW
2337{ 3473{
2338 ev_now_update (EV_A); 3474 ev_now_update (EV_A);
2339} 3475}
2340 3476
2341void 3477void
2342ev_resume (EV_P) 3478ev_resume (EV_P) EV_THROW
2343{ 3479{
2344 ev_tstamp mn_prev = mn_now; 3480 ev_tstamp mn_prev = mn_now;
2345 3481
2346 ev_now_update (EV_A); 3482 ev_now_update (EV_A);
2347 timers_reschedule (EV_A_ mn_now - mn_prev); 3483 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2364inline_size void 3500inline_size void
2365wlist_del (WL *head, WL elem) 3501wlist_del (WL *head, WL elem)
2366{ 3502{
2367 while (*head) 3503 while (*head)
2368 { 3504 {
2369 if (*head == elem) 3505 if (expect_true (*head == elem))
2370 { 3506 {
2371 *head = elem->next; 3507 *head = elem->next;
2372 return; 3508 break;
2373 } 3509 }
2374 3510
2375 head = &(*head)->next; 3511 head = &(*head)->next;
2376 } 3512 }
2377} 3513}
… …
2386 w->pending = 0; 3522 w->pending = 0;
2387 } 3523 }
2388} 3524}
2389 3525
2390int 3526int
2391ev_clear_pending (EV_P_ void *w) 3527ev_clear_pending (EV_P_ void *w) EV_THROW
2392{ 3528{
2393 W w_ = (W)w; 3529 W w_ = (W)w;
2394 int pending = w_->pending; 3530 int pending = w_->pending;
2395 3531
2396 if (expect_true (pending)) 3532 if (expect_true (pending))
… …
2429} 3565}
2430 3566
2431/*****************************************************************************/ 3567/*****************************************************************************/
2432 3568
2433void noinline 3569void noinline
2434ev_io_start (EV_P_ ev_io *w) 3570ev_io_start (EV_P_ ev_io *w) EV_THROW
2435{ 3571{
2436 int fd = w->fd; 3572 int fd = w->fd;
2437 3573
2438 if (expect_false (ev_is_active (w))) 3574 if (expect_false (ev_is_active (w)))
2439 return; 3575 return;
2440 3576
2441 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3577 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2442 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3578 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2443 3579
2444 EV_FREQUENT_CHECK; 3580 EV_FREQUENT_CHECK;
2445 3581
2446 ev_start (EV_A_ (W)w, 1); 3582 ev_start (EV_A_ (W)w, 1);
2447 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3583 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2448 wlist_add (&anfds[fd].head, (WL)w); 3584 wlist_add (&anfds[fd].head, (WL)w);
2449 3585
3586 /* common bug, apparently */
3587 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3588
2450 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3589 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2451 w->events &= ~EV__IOFDSET; 3590 w->events &= ~EV__IOFDSET;
2452 3591
2453 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2454} 3593}
2455 3594
2456void noinline 3595void noinline
2457ev_io_stop (EV_P_ ev_io *w) 3596ev_io_stop (EV_P_ ev_io *w) EV_THROW
2458{ 3597{
2459 clear_pending (EV_A_ (W)w); 3598 clear_pending (EV_A_ (W)w);
2460 if (expect_false (!ev_is_active (w))) 3599 if (expect_false (!ev_is_active (w)))
2461 return; 3600 return;
2462 3601
… …
2465 EV_FREQUENT_CHECK; 3604 EV_FREQUENT_CHECK;
2466 3605
2467 wlist_del (&anfds[w->fd].head, (WL)w); 3606 wlist_del (&anfds[w->fd].head, (WL)w);
2468 ev_stop (EV_A_ (W)w); 3607 ev_stop (EV_A_ (W)w);
2469 3608
2470 fd_change (EV_A_ w->fd, 1); 3609 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2471 3610
2472 EV_FREQUENT_CHECK; 3611 EV_FREQUENT_CHECK;
2473} 3612}
2474 3613
2475void noinline 3614void noinline
2476ev_timer_start (EV_P_ ev_timer *w) 3615ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2477{ 3616{
2478 if (expect_false (ev_is_active (w))) 3617 if (expect_false (ev_is_active (w)))
2479 return; 3618 return;
2480 3619
2481 ev_at (w) += mn_now; 3620 ev_at (w) += mn_now;
… …
2495 3634
2496 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3635 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2497} 3636}
2498 3637
2499void noinline 3638void noinline
2500ev_timer_stop (EV_P_ ev_timer *w) 3639ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2501{ 3640{
2502 clear_pending (EV_A_ (W)w); 3641 clear_pending (EV_A_ (W)w);
2503 if (expect_false (!ev_is_active (w))) 3642 if (expect_false (!ev_is_active (w)))
2504 return; 3643 return;
2505 3644
… …
2517 timers [active] = timers [timercnt + HEAP0]; 3656 timers [active] = timers [timercnt + HEAP0];
2518 adjustheap (timers, timercnt, active); 3657 adjustheap (timers, timercnt, active);
2519 } 3658 }
2520 } 3659 }
2521 3660
2522 EV_FREQUENT_CHECK;
2523
2524 ev_at (w) -= mn_now; 3661 ev_at (w) -= mn_now;
2525 3662
2526 ev_stop (EV_A_ (W)w); 3663 ev_stop (EV_A_ (W)w);
3664
3665 EV_FREQUENT_CHECK;
2527} 3666}
2528 3667
2529void noinline 3668void noinline
2530ev_timer_again (EV_P_ ev_timer *w) 3669ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2531{ 3670{
2532 EV_FREQUENT_CHECK; 3671 EV_FREQUENT_CHECK;
3672
3673 clear_pending (EV_A_ (W)w);
2533 3674
2534 if (ev_is_active (w)) 3675 if (ev_is_active (w))
2535 { 3676 {
2536 if (w->repeat) 3677 if (w->repeat)
2537 { 3678 {
… …
2550 3691
2551 EV_FREQUENT_CHECK; 3692 EV_FREQUENT_CHECK;
2552} 3693}
2553 3694
2554ev_tstamp 3695ev_tstamp
2555ev_timer_remaining (EV_P_ ev_timer *w) 3696ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2556{ 3697{
2557 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3698 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2558} 3699}
2559 3700
2560#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2561void noinline 3702void noinline
2562ev_periodic_start (EV_P_ ev_periodic *w) 3703ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2563{ 3704{
2564 if (expect_false (ev_is_active (w))) 3705 if (expect_false (ev_is_active (w)))
2565 return; 3706 return;
2566 3707
2567 if (w->reschedule_cb) 3708 if (w->reschedule_cb)
2568 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3709 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2569 else if (w->interval) 3710 else if (w->interval)
2570 { 3711 {
2571 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3712 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2572 /* this formula differs from the one in periodic_reify because we do not always round up */ 3713 periodic_recalc (EV_A_ w);
2573 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2574 } 3714 }
2575 else 3715 else
2576 ev_at (w) = w->offset; 3716 ev_at (w) = w->offset;
2577 3717
2578 EV_FREQUENT_CHECK; 3718 EV_FREQUENT_CHECK;
… …
2588 3728
2589 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3729 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2590} 3730}
2591 3731
2592void noinline 3732void noinline
2593ev_periodic_stop (EV_P_ ev_periodic *w) 3733ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2594{ 3734{
2595 clear_pending (EV_A_ (W)w); 3735 clear_pending (EV_A_ (W)w);
2596 if (expect_false (!ev_is_active (w))) 3736 if (expect_false (!ev_is_active (w)))
2597 return; 3737 return;
2598 3738
… …
2610 periodics [active] = periodics [periodiccnt + HEAP0]; 3750 periodics [active] = periodics [periodiccnt + HEAP0];
2611 adjustheap (periodics, periodiccnt, active); 3751 adjustheap (periodics, periodiccnt, active);
2612 } 3752 }
2613 } 3753 }
2614 3754
2615 EV_FREQUENT_CHECK;
2616
2617 ev_stop (EV_A_ (W)w); 3755 ev_stop (EV_A_ (W)w);
3756
3757 EV_FREQUENT_CHECK;
2618} 3758}
2619 3759
2620void noinline 3760void noinline
2621ev_periodic_again (EV_P_ ev_periodic *w) 3761ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2622{ 3762{
2623 /* TODO: use adjustheap and recalculation */ 3763 /* TODO: use adjustheap and recalculation */
2624 ev_periodic_stop (EV_A_ w); 3764 ev_periodic_stop (EV_A_ w);
2625 ev_periodic_start (EV_A_ w); 3765 ev_periodic_start (EV_A_ w);
2626} 3766}
… …
2628 3768
2629#ifndef SA_RESTART 3769#ifndef SA_RESTART
2630# define SA_RESTART 0 3770# define SA_RESTART 0
2631#endif 3771#endif
2632 3772
3773#if EV_SIGNAL_ENABLE
3774
2633void noinline 3775void noinline
2634ev_signal_start (EV_P_ ev_signal *w) 3776ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2635{ 3777{
2636#if EV_MULTIPLICITY
2637 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2638#endif
2639 if (expect_false (ev_is_active (w))) 3778 if (expect_false (ev_is_active (w)))
2640 return; 3779 return;
2641 3780
2642 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3781 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3782
3783#if EV_MULTIPLICITY
3784 assert (("libev: a signal must not be attached to two different loops",
3785 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3786
3787 signals [w->signum - 1].loop = EV_A;
3788 ECB_MEMORY_FENCE_RELEASE;
3789#endif
2643 3790
2644 EV_FREQUENT_CHECK; 3791 EV_FREQUENT_CHECK;
2645 3792
2646#if EV_USE_SIGNALFD 3793#if EV_USE_SIGNALFD
2647 if (sigfd == -2) 3794 if (sigfd == -2)
… …
2669 sigaddset (&sigfd_set, w->signum); 3816 sigaddset (&sigfd_set, w->signum);
2670 sigprocmask (SIG_BLOCK, &sigfd_set, 0); 3817 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671 3818
2672 signalfd (sigfd, &sigfd_set, 0); 3819 signalfd (sigfd, &sigfd_set, 0);
2673 } 3820 }
2674 else
2675#endif
2676 evpipe_init (EV_A);
2677
2678 {
2679#ifndef _WIN32
2680 sigset_t full, prev;
2681 sigfillset (&full);
2682 sigprocmask (SIG_SETMASK, &full, &prev);
2683#endif
2684
2685 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2686
2687#ifndef _WIN32
2688# if EV_USE_SIGNALFD
2689 if (sigfd < 0)/*TODO*/
2690# endif 3821#endif
2691 sigdelset (&prev, w->signum);
2692 sigprocmask (SIG_SETMASK, &prev, 0);
2693#endif
2694 }
2695 3822
2696 ev_start (EV_A_ (W)w, 1); 3823 ev_start (EV_A_ (W)w, 1);
2697 wlist_add (&signals [w->signum - 1].head, (WL)w); 3824 wlist_add (&signals [w->signum - 1].head, (WL)w);
2698 3825
2699 if (!((WL)w)->next) 3826 if (!((WL)w)->next)
2700 {
2701#if _WIN32
2702 signal (w->signum, ev_sighandler);
2703#else
2704# if EV_USE_SIGNALFD 3827# if EV_USE_SIGNALFD
2705 if (sigfd < 0) /*TODO*/ 3828 if (sigfd < 0) /*TODO*/
2706# endif 3829# endif
2707 { 3830 {
3831# ifdef _WIN32
3832 evpipe_init (EV_A);
3833
3834 signal (w->signum, ev_sighandler);
3835# else
2708 struct sigaction sa = { }; 3836 struct sigaction sa;
3837
3838 evpipe_init (EV_A);
3839
2709 sa.sa_handler = ev_sighandler; 3840 sa.sa_handler = ev_sighandler;
2710 sigfillset (&sa.sa_mask); 3841 sigfillset (&sa.sa_mask);
2711 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3842 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2712 sigaction (w->signum, &sa, 0); 3843 sigaction (w->signum, &sa, 0);
3844
3845 if (origflags & EVFLAG_NOSIGMASK)
3846 {
3847 sigemptyset (&sa.sa_mask);
3848 sigaddset (&sa.sa_mask, w->signum);
3849 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2713 } 3850 }
2714#endif 3851#endif
2715 } 3852 }
2716 3853
2717 EV_FREQUENT_CHECK; 3854 EV_FREQUENT_CHECK;
2718} 3855}
2719 3856
2720void noinline 3857void noinline
2721ev_signal_stop (EV_P_ ev_signal *w) 3858ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2722{ 3859{
2723 clear_pending (EV_A_ (W)w); 3860 clear_pending (EV_A_ (W)w);
2724 if (expect_false (!ev_is_active (w))) 3861 if (expect_false (!ev_is_active (w)))
2725 return; 3862 return;
2726 3863
… …
2728 3865
2729 wlist_del (&signals [w->signum - 1].head, (WL)w); 3866 wlist_del (&signals [w->signum - 1].head, (WL)w);
2730 ev_stop (EV_A_ (W)w); 3867 ev_stop (EV_A_ (W)w);
2731 3868
2732 if (!signals [w->signum - 1].head) 3869 if (!signals [w->signum - 1].head)
3870 {
3871#if EV_MULTIPLICITY
3872 signals [w->signum - 1].loop = 0; /* unattach from signal */
3873#endif
2733#if EV_USE_SIGNALFD 3874#if EV_USE_SIGNALFD
2734 if (sigfd >= 0) 3875 if (sigfd >= 0)
2735 { 3876 {
2736 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3877 sigset_t ss;
3878
3879 sigemptyset (&ss);
3880 sigaddset (&ss, w->signum);
2737 sigdelset (&sigfd_set, w->signum); 3881 sigdelset (&sigfd_set, w->signum);
3882
2738 signalfd (sigfd, &sigfd_set, 0); 3883 signalfd (sigfd, &sigfd_set, 0);
2739 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3884 sigprocmask (SIG_UNBLOCK, &ss, 0);
2740 /*TODO: maybe unblock signal? */
2741 } 3885 }
2742 else 3886 else
2743#endif 3887#endif
2744 signal (w->signum, SIG_DFL); 3888 signal (w->signum, SIG_DFL);
3889 }
2745 3890
2746 EV_FREQUENT_CHECK; 3891 EV_FREQUENT_CHECK;
2747} 3892}
3893
3894#endif
3895
3896#if EV_CHILD_ENABLE
2748 3897
2749void 3898void
2750ev_child_start (EV_P_ ev_child *w) 3899ev_child_start (EV_P_ ev_child *w) EV_THROW
2751{ 3900{
2752#if EV_MULTIPLICITY 3901#if EV_MULTIPLICITY
2753 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3902 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2754#endif 3903#endif
2755 if (expect_false (ev_is_active (w))) 3904 if (expect_false (ev_is_active (w)))
2756 return; 3905 return;
2757 3906
2758 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
2759 3908
2760 ev_start (EV_A_ (W)w, 1); 3909 ev_start (EV_A_ (W)w, 1);
2761 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3910 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2762 3911
2763 EV_FREQUENT_CHECK; 3912 EV_FREQUENT_CHECK;
2764} 3913}
2765 3914
2766void 3915void
2767ev_child_stop (EV_P_ ev_child *w) 3916ev_child_stop (EV_P_ ev_child *w) EV_THROW
2768{ 3917{
2769 clear_pending (EV_A_ (W)w); 3918 clear_pending (EV_A_ (W)w);
2770 if (expect_false (!ev_is_active (w))) 3919 if (expect_false (!ev_is_active (w)))
2771 return; 3920 return;
2772 3921
2773 EV_FREQUENT_CHECK; 3922 EV_FREQUENT_CHECK;
2774 3923
2775 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3924 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2776 ev_stop (EV_A_ (W)w); 3925 ev_stop (EV_A_ (W)w);
2777 3926
2778 EV_FREQUENT_CHECK; 3927 EV_FREQUENT_CHECK;
2779} 3928}
3929
3930#endif
2780 3931
2781#if EV_STAT_ENABLE 3932#if EV_STAT_ENABLE
2782 3933
2783# ifdef _WIN32 3934# ifdef _WIN32
2784# undef lstat 3935# undef lstat
… …
2790#define MIN_STAT_INTERVAL 0.1074891 3941#define MIN_STAT_INTERVAL 0.1074891
2791 3942
2792static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3943static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2793 3944
2794#if EV_USE_INOTIFY 3945#if EV_USE_INOTIFY
2795# define EV_INOTIFY_BUFSIZE 8192 3946
3947/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3948# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2796 3949
2797static void noinline 3950static void noinline
2798infy_add (EV_P_ ev_stat *w) 3951infy_add (EV_P_ ev_stat *w)
2799{ 3952{
2800 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); 3953 w->wd = inotify_add_watch (fs_fd, w->path,
3954 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3955 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3956 | IN_DONT_FOLLOW | IN_MASK_ADD);
2801 3957
2802 if (w->wd < 0) 3958 if (w->wd >= 0)
3959 {
3960 struct statfs sfs;
3961
3962 /* now local changes will be tracked by inotify, but remote changes won't */
3963 /* unless the filesystem is known to be local, we therefore still poll */
3964 /* also do poll on <2.6.25, but with normal frequency */
3965
3966 if (!fs_2625)
3967 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3968 else if (!statfs (w->path, &sfs)
3969 && (sfs.f_type == 0x1373 /* devfs */
3970 || sfs.f_type == 0x4006 /* fat */
3971 || sfs.f_type == 0x4d44 /* msdos */
3972 || sfs.f_type == 0xEF53 /* ext2/3 */
3973 || sfs.f_type == 0x72b6 /* jffs2 */
3974 || sfs.f_type == 0x858458f6 /* ramfs */
3975 || sfs.f_type == 0x5346544e /* ntfs */
3976 || sfs.f_type == 0x3153464a /* jfs */
3977 || sfs.f_type == 0x9123683e /* btrfs */
3978 || sfs.f_type == 0x52654973 /* reiser3 */
3979 || sfs.f_type == 0x01021994 /* tmpfs */
3980 || sfs.f_type == 0x58465342 /* xfs */))
3981 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3982 else
3983 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2803 { 3984 }
3985 else
3986 {
3987 /* can't use inotify, continue to stat */
2804 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3988 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2805 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2806 3989
2807 /* monitor some parent directory for speedup hints */ 3990 /* if path is not there, monitor some parent directory for speedup hints */
2808 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3991 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2809 /* but an efficiency issue only */ 3992 /* but an efficiency issue only */
2810 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3993 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2811 { 3994 {
2812 char path [4096]; 3995 char path [4096];
… …
2822 if (!pend || pend == path) 4005 if (!pend || pend == path)
2823 break; 4006 break;
2824 4007
2825 *pend = 0; 4008 *pend = 0;
2826 w->wd = inotify_add_watch (fs_fd, path, mask); 4009 w->wd = inotify_add_watch (fs_fd, path, mask);
2827 } 4010 }
2828 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4011 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2829 } 4012 }
2830 } 4013 }
2831 4014
2832 if (w->wd >= 0) 4015 if (w->wd >= 0)
2833 {
2834 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4016 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2835 4017
2836 /* now local changes will be tracked by inotify, but remote changes won't */ 4018 /* now re-arm timer, if required */
2837 /* unless the filesystem it known to be local, we therefore still poll */ 4019 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2838 /* also do poll on <2.6.25, but with normal frequency */
2839 struct statfs sfs;
2840
2841 if (fs_2625 && !statfs (w->path, &sfs))
2842 if (sfs.f_type == 0x1373 /* devfs */
2843 || sfs.f_type == 0xEF53 /* ext2/3 */
2844 || sfs.f_type == 0x3153464a /* jfs */
2845 || sfs.f_type == 0x52654973 /* reiser3 */
2846 || sfs.f_type == 0x01021994 /* tempfs */
2847 || sfs.f_type == 0x58465342 /* xfs */)
2848 return;
2849
2850 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2851 ev_timer_again (EV_A_ &w->timer); 4020 ev_timer_again (EV_A_ &w->timer);
2852 } 4021 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2853} 4022}
2854 4023
2855static void noinline 4024static void noinline
2856infy_del (EV_P_ ev_stat *w) 4025infy_del (EV_P_ ev_stat *w)
2857{ 4026{
… …
2860 4029
2861 if (wd < 0) 4030 if (wd < 0)
2862 return; 4031 return;
2863 4032
2864 w->wd = -2; 4033 w->wd = -2;
2865 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4034 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2866 wlist_del (&fs_hash [slot].head, (WL)w); 4035 wlist_del (&fs_hash [slot].head, (WL)w);
2867 4036
2868 /* remove this watcher, if others are watching it, they will rearm */ 4037 /* remove this watcher, if others are watching it, they will rearm */
2869 inotify_rm_watch (fs_fd, wd); 4038 inotify_rm_watch (fs_fd, wd);
2870} 4039}
… …
2872static void noinline 4041static void noinline
2873infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4042infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2874{ 4043{
2875 if (slot < 0) 4044 if (slot < 0)
2876 /* overflow, need to check for all hash slots */ 4045 /* overflow, need to check for all hash slots */
2877 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4046 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2878 infy_wd (EV_A_ slot, wd, ev); 4047 infy_wd (EV_A_ slot, wd, ev);
2879 else 4048 else
2880 { 4049 {
2881 WL w_; 4050 WL w_;
2882 4051
2883 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4052 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2884 { 4053 {
2885 ev_stat *w = (ev_stat *)w_; 4054 ev_stat *w = (ev_stat *)w_;
2886 w_ = w_->next; /* lets us remove this watcher and all before it */ 4055 w_ = w_->next; /* lets us remove this watcher and all before it */
2887 4056
2888 if (w->wd == wd || wd == -1) 4057 if (w->wd == wd || wd == -1)
2889 { 4058 {
2890 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4059 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2891 { 4060 {
2892 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4061 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2893 w->wd = -1; 4062 w->wd = -1;
2894 infy_add (EV_A_ w); /* re-add, no matter what */ 4063 infy_add (EV_A_ w); /* re-add, no matter what */
2895 } 4064 }
2896 4065
2897 stat_timer_cb (EV_A_ &w->timer, 0); 4066 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2902 4071
2903static void 4072static void
2904infy_cb (EV_P_ ev_io *w, int revents) 4073infy_cb (EV_P_ ev_io *w, int revents)
2905{ 4074{
2906 char buf [EV_INOTIFY_BUFSIZE]; 4075 char buf [EV_INOTIFY_BUFSIZE];
2907 struct inotify_event *ev = (struct inotify_event *)buf;
2908 int ofs; 4076 int ofs;
2909 int len = read (fs_fd, buf, sizeof (buf)); 4077 int len = read (fs_fd, buf, sizeof (buf));
2910 4078
2911 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4079 for (ofs = 0; ofs < len; )
4080 {
4081 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2912 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4082 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4083 ofs += sizeof (struct inotify_event) + ev->len;
4084 }
2913} 4085}
2914 4086
2915inline_size void 4087inline_size void ecb_cold
2916check_2625 (EV_P) 4088ev_check_2625 (EV_P)
2917{ 4089{
2918 /* kernels < 2.6.25 are borked 4090 /* kernels < 2.6.25 are borked
2919 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4091 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2920 */ 4092 */
2921 struct utsname buf; 4093 if (ev_linux_version () < 0x020619)
2922 int major, minor, micro;
2923
2924 if (uname (&buf))
2925 return; 4094 return;
2926 4095
2927 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2928 return;
2929
2930 if (major < 2
2931 || (major == 2 && minor < 6)
2932 || (major == 2 && minor == 6 && micro < 25))
2933 return;
2934
2935 fs_2625 = 1; 4096 fs_2625 = 1;
4097}
4098
4099inline_size int
4100infy_newfd (void)
4101{
4102#if defined IN_CLOEXEC && defined IN_NONBLOCK
4103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4104 if (fd >= 0)
4105 return fd;
4106#endif
4107 return inotify_init ();
2936} 4108}
2937 4109
2938inline_size void 4110inline_size void
2939infy_init (EV_P) 4111infy_init (EV_P)
2940{ 4112{
2941 if (fs_fd != -2) 4113 if (fs_fd != -2)
2942 return; 4114 return;
2943 4115
2944 fs_fd = -1; 4116 fs_fd = -1;
2945 4117
2946 check_2625 (EV_A); 4118 ev_check_2625 (EV_A);
2947 4119
2948 fs_fd = inotify_init (); 4120 fs_fd = infy_newfd ();
2949 4121
2950 if (fs_fd >= 0) 4122 if (fs_fd >= 0)
2951 { 4123 {
4124 fd_intern (fs_fd);
2952 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4125 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2953 ev_set_priority (&fs_w, EV_MAXPRI); 4126 ev_set_priority (&fs_w, EV_MAXPRI);
2954 ev_io_start (EV_A_ &fs_w); 4127 ev_io_start (EV_A_ &fs_w);
4128 ev_unref (EV_A);
2955 } 4129 }
2956} 4130}
2957 4131
2958inline_size void 4132inline_size void
2959infy_fork (EV_P) 4133infy_fork (EV_P)
… …
2961 int slot; 4135 int slot;
2962 4136
2963 if (fs_fd < 0) 4137 if (fs_fd < 0)
2964 return; 4138 return;
2965 4139
4140 ev_ref (EV_A);
4141 ev_io_stop (EV_A_ &fs_w);
2966 close (fs_fd); 4142 close (fs_fd);
2967 fs_fd = inotify_init (); 4143 fs_fd = infy_newfd ();
2968 4144
4145 if (fs_fd >= 0)
4146 {
4147 fd_intern (fs_fd);
4148 ev_io_set (&fs_w, fs_fd, EV_READ);
4149 ev_io_start (EV_A_ &fs_w);
4150 ev_unref (EV_A);
4151 }
4152
2969 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4153 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2970 { 4154 {
2971 WL w_ = fs_hash [slot].head; 4155 WL w_ = fs_hash [slot].head;
2972 fs_hash [slot].head = 0; 4156 fs_hash [slot].head = 0;
2973 4157
2974 while (w_) 4158 while (w_)
… …
2979 w->wd = -1; 4163 w->wd = -1;
2980 4164
2981 if (fs_fd >= 0) 4165 if (fs_fd >= 0)
2982 infy_add (EV_A_ w); /* re-add, no matter what */ 4166 infy_add (EV_A_ w); /* re-add, no matter what */
2983 else 4167 else
4168 {
4169 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4170 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2984 ev_timer_again (EV_A_ &w->timer); 4171 ev_timer_again (EV_A_ &w->timer);
4172 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4173 }
2985 } 4174 }
2986 } 4175 }
2987} 4176}
2988 4177
2989#endif 4178#endif
… …
2993#else 4182#else
2994# define EV_LSTAT(p,b) lstat (p, b) 4183# define EV_LSTAT(p,b) lstat (p, b)
2995#endif 4184#endif
2996 4185
2997void 4186void
2998ev_stat_stat (EV_P_ ev_stat *w) 4187ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2999{ 4188{
3000 if (lstat (w->path, &w->attr) < 0) 4189 if (lstat (w->path, &w->attr) < 0)
3001 w->attr.st_nlink = 0; 4190 w->attr.st_nlink = 0;
3002 else if (!w->attr.st_nlink) 4191 else if (!w->attr.st_nlink)
3003 w->attr.st_nlink = 1; 4192 w->attr.st_nlink = 1;
… …
3006static void noinline 4195static void noinline
3007stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4196stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3008{ 4197{
3009 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4198 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3010 4199
3011 /* we copy this here each the time so that */ 4200 ev_statdata prev = w->attr;
3012 /* prev has the old value when the callback gets invoked */
3013 w->prev = w->attr;
3014 ev_stat_stat (EV_A_ w); 4201 ev_stat_stat (EV_A_ w);
3015 4202
3016 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4203 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3017 if ( 4204 if (
3018 w->prev.st_dev != w->attr.st_dev 4205 prev.st_dev != w->attr.st_dev
3019 || w->prev.st_ino != w->attr.st_ino 4206 || prev.st_ino != w->attr.st_ino
3020 || w->prev.st_mode != w->attr.st_mode 4207 || prev.st_mode != w->attr.st_mode
3021 || w->prev.st_nlink != w->attr.st_nlink 4208 || prev.st_nlink != w->attr.st_nlink
3022 || w->prev.st_uid != w->attr.st_uid 4209 || prev.st_uid != w->attr.st_uid
3023 || w->prev.st_gid != w->attr.st_gid 4210 || prev.st_gid != w->attr.st_gid
3024 || w->prev.st_rdev != w->attr.st_rdev 4211 || prev.st_rdev != w->attr.st_rdev
3025 || w->prev.st_size != w->attr.st_size 4212 || prev.st_size != w->attr.st_size
3026 || w->prev.st_atime != w->attr.st_atime 4213 || prev.st_atime != w->attr.st_atime
3027 || w->prev.st_mtime != w->attr.st_mtime 4214 || prev.st_mtime != w->attr.st_mtime
3028 || w->prev.st_ctime != w->attr.st_ctime 4215 || prev.st_ctime != w->attr.st_ctime
3029 ) { 4216 ) {
4217 /* we only update w->prev on actual differences */
4218 /* in case we test more often than invoke the callback, */
4219 /* to ensure that prev is always different to attr */
4220 w->prev = prev;
4221
3030 #if EV_USE_INOTIFY 4222 #if EV_USE_INOTIFY
3031 if (fs_fd >= 0) 4223 if (fs_fd >= 0)
3032 { 4224 {
3033 infy_del (EV_A_ w); 4225 infy_del (EV_A_ w);
3034 infy_add (EV_A_ w); 4226 infy_add (EV_A_ w);
… …
3039 ev_feed_event (EV_A_ w, EV_STAT); 4231 ev_feed_event (EV_A_ w, EV_STAT);
3040 } 4232 }
3041} 4233}
3042 4234
3043void 4235void
3044ev_stat_start (EV_P_ ev_stat *w) 4236ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3045{ 4237{
3046 if (expect_false (ev_is_active (w))) 4238 if (expect_false (ev_is_active (w)))
3047 return; 4239 return;
3048 4240
3049 ev_stat_stat (EV_A_ w); 4241 ev_stat_stat (EV_A_ w);
… …
3059 4251
3060 if (fs_fd >= 0) 4252 if (fs_fd >= 0)
3061 infy_add (EV_A_ w); 4253 infy_add (EV_A_ w);
3062 else 4254 else
3063#endif 4255#endif
4256 {
3064 ev_timer_again (EV_A_ &w->timer); 4257 ev_timer_again (EV_A_ &w->timer);
4258 ev_unref (EV_A);
4259 }
3065 4260
3066 ev_start (EV_A_ (W)w, 1); 4261 ev_start (EV_A_ (W)w, 1);
3067 4262
3068 EV_FREQUENT_CHECK; 4263 EV_FREQUENT_CHECK;
3069} 4264}
3070 4265
3071void 4266void
3072ev_stat_stop (EV_P_ ev_stat *w) 4267ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3073{ 4268{
3074 clear_pending (EV_A_ (W)w); 4269 clear_pending (EV_A_ (W)w);
3075 if (expect_false (!ev_is_active (w))) 4270 if (expect_false (!ev_is_active (w)))
3076 return; 4271 return;
3077 4272
3078 EV_FREQUENT_CHECK; 4273 EV_FREQUENT_CHECK;
3079 4274
3080#if EV_USE_INOTIFY 4275#if EV_USE_INOTIFY
3081 infy_del (EV_A_ w); 4276 infy_del (EV_A_ w);
3082#endif 4277#endif
4278
4279 if (ev_is_active (&w->timer))
4280 {
4281 ev_ref (EV_A);
3083 ev_timer_stop (EV_A_ &w->timer); 4282 ev_timer_stop (EV_A_ &w->timer);
4283 }
3084 4284
3085 ev_stop (EV_A_ (W)w); 4285 ev_stop (EV_A_ (W)w);
3086 4286
3087 EV_FREQUENT_CHECK; 4287 EV_FREQUENT_CHECK;
3088} 4288}
3089#endif 4289#endif
3090 4290
3091#if EV_IDLE_ENABLE 4291#if EV_IDLE_ENABLE
3092void 4292void
3093ev_idle_start (EV_P_ ev_idle *w) 4293ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3094{ 4294{
3095 if (expect_false (ev_is_active (w))) 4295 if (expect_false (ev_is_active (w)))
3096 return; 4296 return;
3097 4297
3098 pri_adjust (EV_A_ (W)w); 4298 pri_adjust (EV_A_ (W)w);
… …
3111 4311
3112 EV_FREQUENT_CHECK; 4312 EV_FREQUENT_CHECK;
3113} 4313}
3114 4314
3115void 4315void
3116ev_idle_stop (EV_P_ ev_idle *w) 4316ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3117{ 4317{
3118 clear_pending (EV_A_ (W)w); 4318 clear_pending (EV_A_ (W)w);
3119 if (expect_false (!ev_is_active (w))) 4319 if (expect_false (!ev_is_active (w)))
3120 return; 4320 return;
3121 4321
… …
3133 4333
3134 EV_FREQUENT_CHECK; 4334 EV_FREQUENT_CHECK;
3135} 4335}
3136#endif 4336#endif
3137 4337
4338#if EV_PREPARE_ENABLE
3138void 4339void
3139ev_prepare_start (EV_P_ ev_prepare *w) 4340ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3140{ 4341{
3141 if (expect_false (ev_is_active (w))) 4342 if (expect_false (ev_is_active (w)))
3142 return; 4343 return;
3143 4344
3144 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
… …
3149 4350
3150 EV_FREQUENT_CHECK; 4351 EV_FREQUENT_CHECK;
3151} 4352}
3152 4353
3153void 4354void
3154ev_prepare_stop (EV_P_ ev_prepare *w) 4355ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3155{ 4356{
3156 clear_pending (EV_A_ (W)w); 4357 clear_pending (EV_A_ (W)w);
3157 if (expect_false (!ev_is_active (w))) 4358 if (expect_false (!ev_is_active (w)))
3158 return; 4359 return;
3159 4360
… …
3168 4369
3169 ev_stop (EV_A_ (W)w); 4370 ev_stop (EV_A_ (W)w);
3170 4371
3171 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
3172} 4373}
4374#endif
3173 4375
4376#if EV_CHECK_ENABLE
3174void 4377void
3175ev_check_start (EV_P_ ev_check *w) 4378ev_check_start (EV_P_ ev_check *w) EV_THROW
3176{ 4379{
3177 if (expect_false (ev_is_active (w))) 4380 if (expect_false (ev_is_active (w)))
3178 return; 4381 return;
3179 4382
3180 EV_FREQUENT_CHECK; 4383 EV_FREQUENT_CHECK;
… …
3185 4388
3186 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
3187} 4390}
3188 4391
3189void 4392void
3190ev_check_stop (EV_P_ ev_check *w) 4393ev_check_stop (EV_P_ ev_check *w) EV_THROW
3191{ 4394{
3192 clear_pending (EV_A_ (W)w); 4395 clear_pending (EV_A_ (W)w);
3193 if (expect_false (!ev_is_active (w))) 4396 if (expect_false (!ev_is_active (w)))
3194 return; 4397 return;
3195 4398
… …
3204 4407
3205 ev_stop (EV_A_ (W)w); 4408 ev_stop (EV_A_ (W)w);
3206 4409
3207 EV_FREQUENT_CHECK; 4410 EV_FREQUENT_CHECK;
3208} 4411}
4412#endif
3209 4413
3210#if EV_EMBED_ENABLE 4414#if EV_EMBED_ENABLE
3211void noinline 4415void noinline
3212ev_embed_sweep (EV_P_ ev_embed *w) 4416ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3213{ 4417{
3214 ev_loop (w->other, EVLOOP_NONBLOCK); 4418 ev_run (w->other, EVRUN_NOWAIT);
3215} 4419}
3216 4420
3217static void 4421static void
3218embed_io_cb (EV_P_ ev_io *io, int revents) 4422embed_io_cb (EV_P_ ev_io *io, int revents)
3219{ 4423{
3220 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4424 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3221 4425
3222 if (ev_cb (w)) 4426 if (ev_cb (w))
3223 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4427 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3224 else 4428 else
3225 ev_loop (w->other, EVLOOP_NONBLOCK); 4429 ev_run (w->other, EVRUN_NOWAIT);
3226} 4430}
3227 4431
3228static void 4432static void
3229embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4433embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3230{ 4434{
3231 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4435 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3232 4436
3233 { 4437 {
3234 struct ev_loop *loop = w->other; 4438 EV_P = w->other;
3235 4439
3236 while (fdchangecnt) 4440 while (fdchangecnt)
3237 { 4441 {
3238 fd_reify (EV_A); 4442 fd_reify (EV_A);
3239 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4443 ev_run (EV_A_ EVRUN_NOWAIT);
3240 } 4444 }
3241 } 4445 }
3242} 4446}
3243 4447
3244static void 4448static void
… …
3247 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4451 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3248 4452
3249 ev_embed_stop (EV_A_ w); 4453 ev_embed_stop (EV_A_ w);
3250 4454
3251 { 4455 {
3252 struct ev_loop *loop = w->other; 4456 EV_P = w->other;
3253 4457
3254 ev_loop_fork (EV_A); 4458 ev_loop_fork (EV_A);
3255 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4459 ev_run (EV_A_ EVRUN_NOWAIT);
3256 } 4460 }
3257 4461
3258 ev_embed_start (EV_A_ w); 4462 ev_embed_start (EV_A_ w);
3259} 4463}
3260 4464
… …
3265 ev_idle_stop (EV_A_ idle); 4469 ev_idle_stop (EV_A_ idle);
3266} 4470}
3267#endif 4471#endif
3268 4472
3269void 4473void
3270ev_embed_start (EV_P_ ev_embed *w) 4474ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3271{ 4475{
3272 if (expect_false (ev_is_active (w))) 4476 if (expect_false (ev_is_active (w)))
3273 return; 4477 return;
3274 4478
3275 { 4479 {
3276 struct ev_loop *loop = w->other; 4480 EV_P = w->other;
3277 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4481 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3278 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4482 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3279 } 4483 }
3280 4484
3281 EV_FREQUENT_CHECK; 4485 EV_FREQUENT_CHECK;
… …
3296 4500
3297 EV_FREQUENT_CHECK; 4501 EV_FREQUENT_CHECK;
3298} 4502}
3299 4503
3300void 4504void
3301ev_embed_stop (EV_P_ ev_embed *w) 4505ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3302{ 4506{
3303 clear_pending (EV_A_ (W)w); 4507 clear_pending (EV_A_ (W)w);
3304 if (expect_false (!ev_is_active (w))) 4508 if (expect_false (!ev_is_active (w)))
3305 return; 4509 return;
3306 4510
… …
3308 4512
3309 ev_io_stop (EV_A_ &w->io); 4513 ev_io_stop (EV_A_ &w->io);
3310 ev_prepare_stop (EV_A_ &w->prepare); 4514 ev_prepare_stop (EV_A_ &w->prepare);
3311 ev_fork_stop (EV_A_ &w->fork); 4515 ev_fork_stop (EV_A_ &w->fork);
3312 4516
4517 ev_stop (EV_A_ (W)w);
4518
3313 EV_FREQUENT_CHECK; 4519 EV_FREQUENT_CHECK;
3314} 4520}
3315#endif 4521#endif
3316 4522
3317#if EV_FORK_ENABLE 4523#if EV_FORK_ENABLE
3318void 4524void
3319ev_fork_start (EV_P_ ev_fork *w) 4525ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3320{ 4526{
3321 if (expect_false (ev_is_active (w))) 4527 if (expect_false (ev_is_active (w)))
3322 return; 4528 return;
3323 4529
3324 EV_FREQUENT_CHECK; 4530 EV_FREQUENT_CHECK;
… …
3329 4535
3330 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
3331} 4537}
3332 4538
3333void 4539void
3334ev_fork_stop (EV_P_ ev_fork *w) 4540ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3335{ 4541{
3336 clear_pending (EV_A_ (W)w); 4542 clear_pending (EV_A_ (W)w);
3337 if (expect_false (!ev_is_active (w))) 4543 if (expect_false (!ev_is_active (w)))
3338 return; 4544 return;
3339 4545
… …
3350 4556
3351 EV_FREQUENT_CHECK; 4557 EV_FREQUENT_CHECK;
3352} 4558}
3353#endif 4559#endif
3354 4560
4561#if EV_CLEANUP_ENABLE
4562void
4563ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4564{
4565 if (expect_false (ev_is_active (w)))
4566 return;
4567
4568 EV_FREQUENT_CHECK;
4569
4570 ev_start (EV_A_ (W)w, ++cleanupcnt);
4571 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4572 cleanups [cleanupcnt - 1] = w;
4573
4574 /* cleanup watchers should never keep a refcount on the loop */
4575 ev_unref (EV_A);
4576 EV_FREQUENT_CHECK;
4577}
4578
4579void
4580ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4581{
4582 clear_pending (EV_A_ (W)w);
4583 if (expect_false (!ev_is_active (w)))
4584 return;
4585
4586 EV_FREQUENT_CHECK;
4587 ev_ref (EV_A);
4588
4589 {
4590 int active = ev_active (w);
4591
4592 cleanups [active - 1] = cleanups [--cleanupcnt];
4593 ev_active (cleanups [active - 1]) = active;
4594 }
4595
4596 ev_stop (EV_A_ (W)w);
4597
4598 EV_FREQUENT_CHECK;
4599}
4600#endif
4601
3355#if EV_ASYNC_ENABLE 4602#if EV_ASYNC_ENABLE
3356void 4603void
3357ev_async_start (EV_P_ ev_async *w) 4604ev_async_start (EV_P_ ev_async *w) EV_THROW
3358{ 4605{
3359 if (expect_false (ev_is_active (w))) 4606 if (expect_false (ev_is_active (w)))
3360 return; 4607 return;
4608
4609 w->sent = 0;
3361 4610
3362 evpipe_init (EV_A); 4611 evpipe_init (EV_A);
3363 4612
3364 EV_FREQUENT_CHECK; 4613 EV_FREQUENT_CHECK;
3365 4614
… …
3369 4618
3370 EV_FREQUENT_CHECK; 4619 EV_FREQUENT_CHECK;
3371} 4620}
3372 4621
3373void 4622void
3374ev_async_stop (EV_P_ ev_async *w) 4623ev_async_stop (EV_P_ ev_async *w) EV_THROW
3375{ 4624{
3376 clear_pending (EV_A_ (W)w); 4625 clear_pending (EV_A_ (W)w);
3377 if (expect_false (!ev_is_active (w))) 4626 if (expect_false (!ev_is_active (w)))
3378 return; 4627 return;
3379 4628
… …
3390 4639
3391 EV_FREQUENT_CHECK; 4640 EV_FREQUENT_CHECK;
3392} 4641}
3393 4642
3394void 4643void
3395ev_async_send (EV_P_ ev_async *w) 4644ev_async_send (EV_P_ ev_async *w) EV_THROW
3396{ 4645{
3397 w->sent = 1; 4646 w->sent = 1;
3398 evpipe_write (EV_A_ &gotasync); 4647 evpipe_write (EV_A_ &async_pending);
3399} 4648}
3400#endif 4649#endif
3401 4650
3402/*****************************************************************************/ 4651/*****************************************************************************/
3403 4652
… …
3437 4686
3438 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4687 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3439} 4688}
3440 4689
3441void 4690void
3442ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4691ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3443{ 4692{
3444 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4693 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3445 4694
3446 if (expect_false (!once)) 4695 if (expect_false (!once))
3447 { 4696 {
3448 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4697 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3449 return; 4698 return;
3450 } 4699 }
3451 4700
3452 once->cb = cb; 4701 once->cb = cb;
3453 once->arg = arg; 4702 once->arg = arg;
… …
3468} 4717}
3469 4718
3470/*****************************************************************************/ 4719/*****************************************************************************/
3471 4720
3472#if EV_WALK_ENABLE 4721#if EV_WALK_ENABLE
3473void 4722void ecb_cold
3474ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4723ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3475{ 4724{
3476 int i, j; 4725 int i, j;
3477 ev_watcher_list *wl, *wn; 4726 ev_watcher_list *wl, *wn;
3478 4727
3479 if (types & (EV_IO | EV_EMBED)) 4728 if (types & (EV_IO | EV_EMBED))
… …
3522 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4771 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3523#endif 4772#endif
3524 4773
3525#if EV_IDLE_ENABLE 4774#if EV_IDLE_ENABLE
3526 if (types & EV_IDLE) 4775 if (types & EV_IDLE)
3527 for (j = NUMPRI; i--; ) 4776 for (j = NUMPRI; j--; )
3528 for (i = idlecnt [j]; i--; ) 4777 for (i = idlecnt [j]; i--; )
3529 cb (EV_A_ EV_IDLE, idles [j][i]); 4778 cb (EV_A_ EV_IDLE, idles [j][i]);
3530#endif 4779#endif
3531 4780
3532#if EV_FORK_ENABLE 4781#if EV_FORK_ENABLE
… …
3540 if (types & EV_ASYNC) 4789 if (types & EV_ASYNC)
3541 for (i = asynccnt; i--; ) 4790 for (i = asynccnt; i--; )
3542 cb (EV_A_ EV_ASYNC, asyncs [i]); 4791 cb (EV_A_ EV_ASYNC, asyncs [i]);
3543#endif 4792#endif
3544 4793
4794#if EV_PREPARE_ENABLE
3545 if (types & EV_PREPARE) 4795 if (types & EV_PREPARE)
3546 for (i = preparecnt; i--; ) 4796 for (i = preparecnt; i--; )
3547#if EV_EMBED_ENABLE 4797# if EV_EMBED_ENABLE
3548 if (ev_cb (prepares [i]) != embed_prepare_cb) 4798 if (ev_cb (prepares [i]) != embed_prepare_cb)
3549#endif 4799# endif
3550 cb (EV_A_ EV_PREPARE, prepares [i]); 4800 cb (EV_A_ EV_PREPARE, prepares [i]);
4801#endif
3551 4802
4803#if EV_CHECK_ENABLE
3552 if (types & EV_CHECK) 4804 if (types & EV_CHECK)
3553 for (i = checkcnt; i--; ) 4805 for (i = checkcnt; i--; )
3554 cb (EV_A_ EV_CHECK, checks [i]); 4806 cb (EV_A_ EV_CHECK, checks [i]);
4807#endif
3555 4808
4809#if EV_SIGNAL_ENABLE
3556 if (types & EV_SIGNAL) 4810 if (types & EV_SIGNAL)
3557 for (i = 0; i < signalmax; ++i) 4811 for (i = 0; i < EV_NSIG - 1; ++i)
3558 for (wl = signals [i].head; wl; ) 4812 for (wl = signals [i].head; wl; )
3559 { 4813 {
3560 wn = wl->next; 4814 wn = wl->next;
3561 cb (EV_A_ EV_SIGNAL, wl); 4815 cb (EV_A_ EV_SIGNAL, wl);
3562 wl = wn; 4816 wl = wn;
3563 } 4817 }
4818#endif
3564 4819
4820#if EV_CHILD_ENABLE
3565 if (types & EV_CHILD) 4821 if (types & EV_CHILD)
3566 for (i = EV_PID_HASHSIZE; i--; ) 4822 for (i = (EV_PID_HASHSIZE); i--; )
3567 for (wl = childs [i]; wl; ) 4823 for (wl = childs [i]; wl; )
3568 { 4824 {
3569 wn = wl->next; 4825 wn = wl->next;
3570 cb (EV_A_ EV_CHILD, wl); 4826 cb (EV_A_ EV_CHILD, wl);
3571 wl = wn; 4827 wl = wn;
3572 } 4828 }
4829#endif
3573/* EV_STAT 0x00001000 /* stat data changed */ 4830/* EV_STAT 0x00001000 /* stat data changed */
3574/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4831/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3575} 4832}
3576#endif 4833#endif
3577 4834
3578#if EV_MULTIPLICITY 4835#if EV_MULTIPLICITY
3579 #include "ev_wrap.h" 4836 #include "ev_wrap.h"
3580#endif 4837#endif
3581 4838
3582#ifdef __cplusplus
3583}
3584#endif
3585

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