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Comparing libev/ev.c (file contents):
Revision 1.290 by root, Mon Jun 29 04:41:34 2009 UTC vs.
Revision 1.457 by root, Thu Sep 5 18:45:29 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
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# 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
166#endif 197#endif
167 198
168#ifndef _WIN32 199#ifndef _WIN32
169# include <sys/time.h> 200# include <sys/time.h>
170# include <sys/wait.h> 201# include <sys/wait.h>
171# include <unistd.h> 202# include <unistd.h>
172#else 203#else
173# include <io.h> 204# include <io.h>
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
175# include <windows.h> 207# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
178# endif 210# endif
211# undef EV_AVOID_STDIO
179#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
180 221
181/* 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
182 255
183#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 259# else
187# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
188# endif 261# endif
189#endif 262#endif
190 263
191#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 267# else
195# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
196# endif 269# endif
197#endif 270#endif
198 271
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 274#endif
202 275
203#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 279# else
207# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
208# endif 281# endif
209#endif 282#endif
210 283
211#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 286#endif
214 287
215#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
216# ifdef _WIN32 289# ifdef _WIN32
217# define EV_USE_POLL 0 290# define EV_USE_POLL 0
218# else 291# else
219# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 293# endif
221#endif 294#endif
222 295
223#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 299# else
227# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
228# endif 301# endif
229#endif 302#endif
230 303
… …
236# define EV_USE_PORT 0 309# define EV_USE_PORT 0
237#endif 310#endif
238 311
239#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 315# else
243# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
244# endif 317# endif
245#endif 318#endif
246 319
247#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 322#endif
254 323
255#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 326#endif
262 327
263#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 331# else
267# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
333# endif
334#endif
335
336#ifndef EV_USE_SIGNALFD
337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
338# define EV_USE_SIGNALFD EV_FEATURE_OS
339# else
340# define EV_USE_SIGNALFD 0
268# endif 341# endif
269#endif 342#endif
270 343
271#if 0 /* debugging */ 344#if 0 /* debugging */
272# define EV_VERIFY 3 345# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
275#endif 348#endif
276 349
277#ifndef EV_VERIFY 350#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 352#endif
280 353
281#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 356#endif
284 357
285#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif
288
289/* this block fixes any misconfiguration where we know we run into trouble otherwise */
290
291#ifndef CLOCK_MONOTONIC
292# undef EV_USE_MONOTONIC
293# define EV_USE_MONOTONIC 0
294#endif
295
296#ifndef CLOCK_REALTIME
297# undef EV_USE_REALTIME
298# define EV_USE_REALTIME 0
299#endif
300
301#if !EV_STAT_ENABLE
302# undef EV_USE_INOTIFY
303# define EV_USE_INOTIFY 0
304#endif
305
306#if !EV_USE_NANOSLEEP
307# ifndef _WIN32
308# include <sys/select.h>
309# endif 360#endif
310#endif
311 361
312#if EV_USE_INOTIFY 362#ifdef ANDROID
313# include <sys/utsname.h> 363/* supposedly, android doesn't typedef fd_mask */
314# include <sys/statfs.h> 364# undef EV_USE_SELECT
315# include <sys/inotify.h>
316/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
317# ifndef IN_DONT_FOLLOW
318# undef EV_USE_INOTIFY
319# define EV_USE_INOTIFY 0 365# 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
320# endif 369#endif
321#endif
322 370
323#if EV_SELECT_IS_WINSOCKET 371/* aix's poll.h seems to cause lots of trouble */
324# include <winsock.h> 372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
325#endif 376#endif
326 377
327/* 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, */
328/* which makes programs even slower. might work on other unices, too. */ 379/* which makes programs even slower. might work on other unices, too. */
329#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
330# include <syscall.h> 381# include <sys/syscall.h>
331# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
332# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
333# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
334# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
335# else 386# else
336# undef EV_USE_CLOCK_SYSCALL 387# undef EV_USE_CLOCK_SYSCALL
337# define EV_USE_CLOCK_SYSCALL 0 388# define EV_USE_CLOCK_SYSCALL 0
338# endif 389# endif
339#endif 390#endif
340 391
392/* this block fixes any misconfiguration where we know we run into trouble otherwise */
393
394#ifndef CLOCK_MONOTONIC
395# undef EV_USE_MONOTONIC
396# define EV_USE_MONOTONIC 0
397#endif
398
399#ifndef CLOCK_REALTIME
400# undef EV_USE_REALTIME
401# define EV_USE_REALTIME 0
402#endif
403
404#if !EV_STAT_ENABLE
405# undef EV_USE_INOTIFY
406# define EV_USE_INOTIFY 0
407#endif
408
409#if !EV_USE_NANOSLEEP
410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
412# include <sys/select.h>
413# endif
414#endif
415
416#if EV_USE_INOTIFY
417# include <sys/statfs.h>
418# include <sys/inotify.h>
419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
420# ifndef IN_DONT_FOLLOW
421# undef EV_USE_INOTIFY
422# define EV_USE_INOTIFY 0
423# endif
424#endif
425
341#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
342/* 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 */
343# include <stdint.h> 428# include <stdint.h>
344# ifdef __cplusplus 429# ifndef EFD_NONBLOCK
345extern "C" { 430# define EFD_NONBLOCK O_NONBLOCK
346# endif 431# endif
347int eventfd (unsigned int initval, int flags); 432# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 433# ifdef O_CLOEXEC
349} 434# define EFD_CLOEXEC O_CLOEXEC
435# else
436# define EFD_CLOEXEC 02000000
437# endif
350# endif 438# endif
439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
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
447# endif
448# ifndef SFD_CLOEXEC
449# ifdef O_CLOEXEC
450# define SFD_CLOEXEC O_CLOEXEC
451# else
452# define SFD_CLOEXEC 02000000
453# endif
454# endif
455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
456
457struct signalfd_siginfo
458{
459 uint32_t ssi_signo;
460 char pad[128 - sizeof (uint32_t)];
461};
351#endif 462#endif
352 463
353/**/ 464/**/
354 465
355#if EV_VERIFY >= 3 466#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 467# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 468#else
358# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
359#endif 470#endif
360 471
361/* 472/*
362 * This is used to avoid floating point rounding problems. 473 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 474 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 475 */
369#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 */
370 478
371#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) */
372#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) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 481
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;
375#if __GNUC__ >= 4 529 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
377# 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
378#else 545#else
379# define expect(expr,value) (expr) 546 #include <inttypes.h>
380# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
382# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
383# 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
384#endif 560 #endif
561#endif
385 562
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 it's 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. */
386#define expect_false(expr) expect ((expr) != 0, 0) 799#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#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 #include <math.h> /* for frexp*, ldexp* */
1073#endif
1074
1075#ifndef ECB_NO_LIBM
1076
1077 /* convert a float to ieee single/binary32 */
1078 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1079 ecb_function_ uint32_t
1080 ecb_float_to_binary32 (float x)
1081 {
1082 uint32_t r;
1083
1084 #if ECB_STDFP
1085 memcpy (&r, &x, 4);
1086 #else
1087 /* slow emulation, works for anything but -0 */
1088 uint32_t m;
1089 int e;
1090
1091 if (x == 0e0f ) return 0x00000000U;
1092 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1093 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1094 if (x != x ) return 0x7fbfffffU;
1095
1096 m = frexpf (x, &e) * 0x1000000U;
1097
1098 r = m & 0x80000000U;
1099
1100 if (r)
1101 m = -m;
1102
1103 if (e <= -126)
1104 {
1105 m &= 0xffffffU;
1106 m >>= (-125 - e);
1107 e = -126;
1108 }
1109
1110 r |= (e + 126) << 23;
1111 r |= m & 0x7fffffU;
1112 #endif
1113
1114 return r;
1115 }
1116
1117 /* converts an ieee single/binary32 to a float */
1118 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1119 ecb_function_ float
1120 ecb_binary32_to_float (uint32_t x)
1121 {
1122 float r;
1123
1124 #if ECB_STDFP
1125 memcpy (&r, &x, 4);
1126 #else
1127 /* emulation, only works for normals and subnormals and +0 */
1128 int neg = x >> 31;
1129 int e = (x >> 23) & 0xffU;
1130
1131 x &= 0x7fffffU;
1132
1133 if (e)
1134 x |= 0x800000U;
1135 else
1136 e = 1;
1137
1138 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1139 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1140
1141 r = neg ? -r : r;
1142 #endif
1143
1144 return r;
1145 }
1146
1147 /* convert a double to ieee double/binary64 */
1148 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1149 ecb_function_ uint64_t
1150 ecb_double_to_binary64 (double x)
1151 {
1152 uint64_t r;
1153
1154 #if ECB_STDFP
1155 memcpy (&r, &x, 8);
1156 #else
1157 /* slow emulation, works for anything but -0 */
1158 uint64_t m;
1159 int e;
1160
1161 if (x == 0e0 ) return 0x0000000000000000U;
1162 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1163 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1164 if (x != x ) return 0X7ff7ffffffffffffU;
1165
1166 m = frexp (x, &e) * 0x20000000000000U;
1167
1168 r = m & 0x8000000000000000;;
1169
1170 if (r)
1171 m = -m;
1172
1173 if (e <= -1022)
1174 {
1175 m &= 0x1fffffffffffffU;
1176 m >>= (-1021 - e);
1177 e = -1022;
1178 }
1179
1180 r |= ((uint64_t)(e + 1022)) << 52;
1181 r |= m & 0xfffffffffffffU;
1182 #endif
1183
1184 return r;
1185 }
1186
1187 /* converts an ieee double/binary64 to a double */
1188 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1189 ecb_function_ double
1190 ecb_binary64_to_double (uint64_t x)
1191 {
1192 double r;
1193
1194 #if ECB_STDFP
1195 memcpy (&r, &x, 8);
1196 #else
1197 /* emulation, only works for normals and subnormals and +0 */
1198 int neg = x >> 63;
1199 int e = (x >> 52) & 0x7ffU;
1200
1201 x &= 0xfffffffffffffU;
1202
1203 if (e)
1204 x |= 0x10000000000000U;
1205 else
1206 e = 1;
1207
1208 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1209 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1210
1211 r = neg ? -r : r;
1212 #endif
1213
1214 return r;
1215 }
1216
1217#endif
1218
1219#endif
1220
1221/* ECB.H END */
1222
1223#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1224/* if your architecture doesn't need memory fences, e.g. because it is
1225 * single-cpu/core, or if you use libev in a project that doesn't use libev
1226 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1227 * libev, in which cases the memory fences become nops.
1228 * alternatively, you can remove this #error and link against libpthread,
1229 * which will then provide the memory fences.
1230 */
1231# error "memory fences not defined for your architecture, please report"
1232#endif
1233
1234#ifndef ECB_MEMORY_FENCE
1235# define ECB_MEMORY_FENCE do { } while (0)
1236# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1237# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1238#endif
1239
1240#define expect_false(cond) ecb_expect_false (cond)
1241#define expect_true(cond) ecb_expect_true (cond)
1242#define noinline ecb_noinline
1243
388#define inline_size static inline 1244#define inline_size ecb_inline
389 1245
390#if EV_MINIMAL 1246#if EV_FEATURE_CODE
1247# define inline_speed ecb_inline
1248#else
391# define inline_speed static noinline 1249# define inline_speed static noinline
1250#endif
1251
1252#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1253
1254#if EV_MINPRI == EV_MAXPRI
1255# define ABSPRI(w) (((W)w), 0)
392#else 1256#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1257# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1258#endif
398 1259
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1260#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 1261#define EMPTY2(a,b) /* used to suppress some warnings */
401 1262
402typedef ev_watcher *W; 1263typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 1267#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1268#define ev_at(w) ((WT)(w))->at
408 1269
409#if EV_USE_REALTIME 1270#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1271/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */ 1272/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1273static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1274#endif
414 1275
415#if EV_USE_MONOTONIC 1276#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1277static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1278#endif
418 1279
1280#ifndef EV_FD_TO_WIN32_HANDLE
1281# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1282#endif
1283#ifndef EV_WIN32_HANDLE_TO_FD
1284# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1285#endif
1286#ifndef EV_WIN32_CLOSE_FD
1287# define EV_WIN32_CLOSE_FD(fd) close (fd)
1288#endif
1289
419#ifdef _WIN32 1290#ifdef _WIN32
420# include "ev_win32.c" 1291# include "ev_win32.c"
421#endif 1292#endif
422 1293
423/*****************************************************************************/ 1294/*****************************************************************************/
424 1295
1296/* define a suitable floor function (only used by periodics atm) */
1297
1298#if EV_USE_FLOOR
1299# include <math.h>
1300# define ev_floor(v) floor (v)
1301#else
1302
1303#include <float.h>
1304
1305/* a floor() replacement function, should be independent of ev_tstamp type */
1306static ev_tstamp noinline
1307ev_floor (ev_tstamp v)
1308{
1309 /* the choice of shift factor is not terribly important */
1310#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1311 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1312#else
1313 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1314#endif
1315
1316 /* argument too large for an unsigned long? */
1317 if (expect_false (v >= shift))
1318 {
1319 ev_tstamp f;
1320
1321 if (v == v - 1.)
1322 return v; /* very large number */
1323
1324 f = shift * ev_floor (v * (1. / shift));
1325 return f + ev_floor (v - f);
1326 }
1327
1328 /* special treatment for negative args? */
1329 if (expect_false (v < 0.))
1330 {
1331 ev_tstamp f = -ev_floor (-v);
1332
1333 return f - (f == v ? 0 : 1);
1334 }
1335
1336 /* fits into an unsigned long */
1337 return (unsigned long)v;
1338}
1339
1340#endif
1341
1342/*****************************************************************************/
1343
1344#ifdef __linux
1345# include <sys/utsname.h>
1346#endif
1347
1348static unsigned int noinline ecb_cold
1349ev_linux_version (void)
1350{
1351#ifdef __linux
1352 unsigned int v = 0;
1353 struct utsname buf;
1354 int i;
1355 char *p = buf.release;
1356
1357 if (uname (&buf))
1358 return 0;
1359
1360 for (i = 3+1; --i; )
1361 {
1362 unsigned int c = 0;
1363
1364 for (;;)
1365 {
1366 if (*p >= '0' && *p <= '9')
1367 c = c * 10 + *p++ - '0';
1368 else
1369 {
1370 p += *p == '.';
1371 break;
1372 }
1373 }
1374
1375 v = (v << 8) | c;
1376 }
1377
1378 return v;
1379#else
1380 return 0;
1381#endif
1382}
1383
1384/*****************************************************************************/
1385
1386#if EV_AVOID_STDIO
1387static void noinline ecb_cold
1388ev_printerr (const char *msg)
1389{
1390 write (STDERR_FILENO, msg, strlen (msg));
1391}
1392#endif
1393
425static void (*syserr_cb)(const char *msg); 1394static void (*syserr_cb)(const char *msg) EV_THROW;
426 1395
427void 1396void ecb_cold
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1397ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
429{ 1398{
430 syserr_cb = cb; 1399 syserr_cb = cb;
431} 1400}
432 1401
433static void noinline 1402static void noinline ecb_cold
434ev_syserr (const char *msg) 1403ev_syserr (const char *msg)
435{ 1404{
436 if (!msg) 1405 if (!msg)
437 msg = "(libev) system error"; 1406 msg = "(libev) system error";
438 1407
439 if (syserr_cb) 1408 if (syserr_cb)
440 syserr_cb (msg); 1409 syserr_cb (msg);
441 else 1410 else
442 { 1411 {
1412#if EV_AVOID_STDIO
1413 ev_printerr (msg);
1414 ev_printerr (": ");
1415 ev_printerr (strerror (errno));
1416 ev_printerr ("\n");
1417#else
443 perror (msg); 1418 perror (msg);
1419#endif
444 abort (); 1420 abort ();
445 } 1421 }
446} 1422}
447 1423
448static void * 1424static void *
449ev_realloc_emul (void *ptr, long size) 1425ev_realloc_emul (void *ptr, long size) EV_THROW
450{ 1426{
451 /* some systems, notably openbsd and darwin, fail to properly 1427 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 1428 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 1429 * the single unix specification, so work around them here.
1430 * recently, also (at least) fedora and debian started breaking it,
1431 * despite documenting it otherwise.
454 */ 1432 */
455 1433
456 if (size) 1434 if (size)
457 return realloc (ptr, size); 1435 return realloc (ptr, size);
458 1436
459 free (ptr); 1437 free (ptr);
460 return 0; 1438 return 0;
461} 1439}
462 1440
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1441static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
464 1442
465void 1443void ecb_cold
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1444ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
467{ 1445{
468 alloc = cb; 1446 alloc = cb;
469} 1447}
470 1448
471inline_speed void * 1449inline_speed void *
… …
473{ 1451{
474 ptr = alloc (ptr, size); 1452 ptr = alloc (ptr, size);
475 1453
476 if (!ptr && size) 1454 if (!ptr && size)
477 { 1455 {
1456#if EV_AVOID_STDIO
1457 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1458#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1459 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1460#endif
479 abort (); 1461 abort ();
480 } 1462 }
481 1463
482 return ptr; 1464 return ptr;
483} 1465}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1467#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1468#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1469
488/*****************************************************************************/ 1470/*****************************************************************************/
489 1471
1472/* set in reify when reification needed */
1473#define EV_ANFD_REIFY 1
1474
490/* file descriptor info structure */ 1475/* file descriptor info structure */
491typedef struct 1476typedef struct
492{ 1477{
493 WL head; 1478 WL head;
494 unsigned char events; /* the events watched for */ 1479 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1480 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1481 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 1482 unsigned char unused;
498#if EV_USE_EPOLL 1483#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1484 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1485#endif
501#if EV_SELECT_IS_WINSOCKET 1486#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1487 SOCKET handle;
1488#endif
1489#if EV_USE_IOCP
1490 OVERLAPPED or, ow;
503#endif 1491#endif
504} ANFD; 1492} ANFD;
505 1493
506/* stores the pending event set for a given watcher */ 1494/* stores the pending event set for a given watcher */
507typedef struct 1495typedef struct
… …
549 #undef VAR 1537 #undef VAR
550 }; 1538 };
551 #include "ev_wrap.h" 1539 #include "ev_wrap.h"
552 1540
553 static struct ev_loop default_loop_struct; 1541 static struct ev_loop default_loop_struct;
554 struct ev_loop *ev_default_loop_ptr; 1542 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
555 1543
556#else 1544#else
557 1545
558 ev_tstamp ev_rt_now; 1546 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
559 #define VAR(name,decl) static decl; 1547 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1548 #include "ev_vars.h"
561 #undef VAR 1549 #undef VAR
562 1550
563 static int ev_default_loop_ptr; 1551 static int ev_default_loop_ptr;
564 1552
565#endif 1553#endif
566 1554
1555#if EV_FEATURE_API
1556# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1557# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1558# define EV_INVOKE_PENDING invoke_cb (EV_A)
1559#else
1560# define EV_RELEASE_CB (void)0
1561# define EV_ACQUIRE_CB (void)0
1562# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1563#endif
1564
1565#define EVBREAK_RECURSE 0x80
1566
567/*****************************************************************************/ 1567/*****************************************************************************/
568 1568
1569#ifndef EV_HAVE_EV_TIME
569ev_tstamp 1570ev_tstamp
570ev_time (void) 1571ev_time (void) EV_THROW
571{ 1572{
572#if EV_USE_REALTIME 1573#if EV_USE_REALTIME
573 if (expect_true (have_realtime)) 1574 if (expect_true (have_realtime))
574 { 1575 {
575 struct timespec ts; 1576 struct timespec ts;
… …
580 1581
581 struct timeval tv; 1582 struct timeval tv;
582 gettimeofday (&tv, 0); 1583 gettimeofday (&tv, 0);
583 return tv.tv_sec + tv.tv_usec * 1e-6; 1584 return tv.tv_sec + tv.tv_usec * 1e-6;
584} 1585}
1586#endif
585 1587
586inline_size ev_tstamp 1588inline_size ev_tstamp
587get_clock (void) 1589get_clock (void)
588{ 1590{
589#if EV_USE_MONOTONIC 1591#if EV_USE_MONOTONIC
… …
598 return ev_time (); 1600 return ev_time ();
599} 1601}
600 1602
601#if EV_MULTIPLICITY 1603#if EV_MULTIPLICITY
602ev_tstamp 1604ev_tstamp
603ev_now (EV_P) 1605ev_now (EV_P) EV_THROW
604{ 1606{
605 return ev_rt_now; 1607 return ev_rt_now;
606} 1608}
607#endif 1609#endif
608 1610
609void 1611void
610ev_sleep (ev_tstamp delay) 1612ev_sleep (ev_tstamp delay) EV_THROW
611{ 1613{
612 if (delay > 0.) 1614 if (delay > 0.)
613 { 1615 {
614#if EV_USE_NANOSLEEP 1616#if EV_USE_NANOSLEEP
615 struct timespec ts; 1617 struct timespec ts;
616 1618
617 ts.tv_sec = (time_t)delay; 1619 EV_TS_SET (ts, delay);
618 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
619
620 nanosleep (&ts, 0); 1620 nanosleep (&ts, 0);
621#elif defined(_WIN32) 1621#elif defined _WIN32
622 Sleep ((unsigned long)(delay * 1e3)); 1622 Sleep ((unsigned long)(delay * 1e3));
623#else 1623#else
624 struct timeval tv; 1624 struct timeval tv;
625 1625
626 tv.tv_sec = (time_t)delay;
627 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
628
629 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1626 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
630 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1627 /* something not guaranteed by newer posix versions, but guaranteed */
631 /* by older ones */ 1628 /* by older ones */
1629 EV_TV_SET (tv, delay);
632 select (0, 0, 0, 0, &tv); 1630 select (0, 0, 0, 0, &tv);
633#endif 1631#endif
634 } 1632 }
635} 1633}
636 1634
637/*****************************************************************************/ 1635/*****************************************************************************/
638 1636
639#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1637#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
640 1638
641/* find a suitable new size for the given array, */ 1639/* find a suitable new size for the given array, */
642/* hopefully by rounding to a ncie-to-malloc size */ 1640/* hopefully by rounding to a nice-to-malloc size */
643inline_size int 1641inline_size int
644array_nextsize (int elem, int cur, int cnt) 1642array_nextsize (int elem, int cur, int cnt)
645{ 1643{
646 int ncur = cur + 1; 1644 int ncur = cur + 1;
647 1645
648 do 1646 do
649 ncur <<= 1; 1647 ncur <<= 1;
650 while (cnt > ncur); 1648 while (cnt > ncur);
651 1649
652 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1650 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
653 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1651 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
654 { 1652 {
655 ncur *= elem; 1653 ncur *= elem;
656 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1654 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
657 ncur = ncur - sizeof (void *) * 4; 1655 ncur = ncur - sizeof (void *) * 4;
… …
659 } 1657 }
660 1658
661 return ncur; 1659 return ncur;
662} 1660}
663 1661
664static noinline void * 1662static void * noinline ecb_cold
665array_realloc (int elem, void *base, int *cur, int cnt) 1663array_realloc (int elem, void *base, int *cur, int cnt)
666{ 1664{
667 *cur = array_nextsize (elem, *cur, cnt); 1665 *cur = array_nextsize (elem, *cur, cnt);
668 return ev_realloc (base, elem * *cur); 1666 return ev_realloc (base, elem * *cur);
669} 1667}
… …
672 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1670 memset ((void *)(base), 0, sizeof (*(base)) * (count))
673 1671
674#define array_needsize(type,base,cur,cnt,init) \ 1672#define array_needsize(type,base,cur,cnt,init) \
675 if (expect_false ((cnt) > (cur))) \ 1673 if (expect_false ((cnt) > (cur))) \
676 { \ 1674 { \
677 int ocur_ = (cur); \ 1675 int ecb_unused ocur_ = (cur); \
678 (base) = (type *)array_realloc \ 1676 (base) = (type *)array_realloc \
679 (sizeof (type), (base), &(cur), (cnt)); \ 1677 (sizeof (type), (base), &(cur), (cnt)); \
680 init ((base) + (ocur_), (cur) - ocur_); \ 1678 init ((base) + (ocur_), (cur) - ocur_); \
681 } 1679 }
682 1680
… …
700pendingcb (EV_P_ ev_prepare *w, int revents) 1698pendingcb (EV_P_ ev_prepare *w, int revents)
701{ 1699{
702} 1700}
703 1701
704void noinline 1702void noinline
705ev_feed_event (EV_P_ void *w, int revents) 1703ev_feed_event (EV_P_ void *w, int revents) EV_THROW
706{ 1704{
707 W w_ = (W)w; 1705 W w_ = (W)w;
708 int pri = ABSPRI (w_); 1706 int pri = ABSPRI (w_);
709 1707
710 if (expect_false (w_->pending)) 1708 if (expect_false (w_->pending))
… …
714 w_->pending = ++pendingcnt [pri]; 1712 w_->pending = ++pendingcnt [pri];
715 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1713 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
716 pendings [pri][w_->pending - 1].w = w_; 1714 pendings [pri][w_->pending - 1].w = w_;
717 pendings [pri][w_->pending - 1].events = revents; 1715 pendings [pri][w_->pending - 1].events = revents;
718 } 1716 }
1717
1718 pendingpri = NUMPRI - 1;
719} 1719}
720 1720
721inline_speed void 1721inline_speed void
722feed_reverse (EV_P_ W w) 1722feed_reverse (EV_P_ W w)
723{ 1723{
… …
743} 1743}
744 1744
745/*****************************************************************************/ 1745/*****************************************************************************/
746 1746
747inline_speed void 1747inline_speed void
748fd_event (EV_P_ int fd, int revents) 1748fd_event_nocheck (EV_P_ int fd, int revents)
749{ 1749{
750 ANFD *anfd = anfds + fd; 1750 ANFD *anfd = anfds + fd;
751 ev_io *w; 1751 ev_io *w;
752 1752
753 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1753 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
757 if (ev) 1757 if (ev)
758 ev_feed_event (EV_A_ (W)w, ev); 1758 ev_feed_event (EV_A_ (W)w, ev);
759 } 1759 }
760} 1760}
761 1761
1762/* do not submit kernel events for fds that have reify set */
1763/* because that means they changed while we were polling for new events */
1764inline_speed void
1765fd_event (EV_P_ int fd, int revents)
1766{
1767 ANFD *anfd = anfds + fd;
1768
1769 if (expect_true (!anfd->reify))
1770 fd_event_nocheck (EV_A_ fd, revents);
1771}
1772
762void 1773void
763ev_feed_fd_event (EV_P_ int fd, int revents) 1774ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
764{ 1775{
765 if (fd >= 0 && fd < anfdmax) 1776 if (fd >= 0 && fd < anfdmax)
766 fd_event (EV_A_ fd, revents); 1777 fd_event_nocheck (EV_A_ fd, revents);
767} 1778}
768 1779
769/* make sure the external fd watch events are in-sync */ 1780/* make sure the external fd watch events are in-sync */
770/* with the kernel/libev internal state */ 1781/* with the kernel/libev internal state */
771inline_size void 1782inline_size void
772fd_reify (EV_P) 1783fd_reify (EV_P)
773{ 1784{
774 int i; 1785 int i;
775 1786
1787#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1788 for (i = 0; i < fdchangecnt; ++i)
1789 {
1790 int fd = fdchanges [i];
1791 ANFD *anfd = anfds + fd;
1792
1793 if (anfd->reify & EV__IOFDSET && anfd->head)
1794 {
1795 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1796
1797 if (handle != anfd->handle)
1798 {
1799 unsigned long arg;
1800
1801 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1802
1803 /* handle changed, but fd didn't - we need to do it in two steps */
1804 backend_modify (EV_A_ fd, anfd->events, 0);
1805 anfd->events = 0;
1806 anfd->handle = handle;
1807 }
1808 }
1809 }
1810#endif
1811
776 for (i = 0; i < fdchangecnt; ++i) 1812 for (i = 0; i < fdchangecnt; ++i)
777 { 1813 {
778 int fd = fdchanges [i]; 1814 int fd = fdchanges [i];
779 ANFD *anfd = anfds + fd; 1815 ANFD *anfd = anfds + fd;
780 ev_io *w; 1816 ev_io *w;
781 1817
782 unsigned char events = 0; 1818 unsigned char o_events = anfd->events;
1819 unsigned char o_reify = anfd->reify;
783 1820
784 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1821 anfd->reify = 0;
785 events |= (unsigned char)w->events;
786 1822
787#if EV_SELECT_IS_WINSOCKET 1823 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
788 if (events)
789 { 1824 {
790 unsigned long arg; 1825 anfd->events = 0;
791 #ifdef EV_FD_TO_WIN32_HANDLE 1826
792 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1827 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
793 #else 1828 anfd->events |= (unsigned char)w->events;
794 anfd->handle = _get_osfhandle (fd); 1829
795 #endif 1830 if (o_events != anfd->events)
796 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1831 o_reify = EV__IOFDSET; /* actually |= */
797 } 1832 }
798#endif
799 1833
800 { 1834 if (o_reify & EV__IOFDSET)
801 unsigned char o_events = anfd->events;
802 unsigned char o_reify = anfd->reify;
803
804 anfd->reify = 0;
805 anfd->events = events;
806
807 if (o_events != events || o_reify & EV__IOFDSET)
808 backend_modify (EV_A_ fd, o_events, events); 1835 backend_modify (EV_A_ fd, o_events, anfd->events);
809 }
810 } 1836 }
811 1837
812 fdchangecnt = 0; 1838 fdchangecnt = 0;
813} 1839}
814 1840
… …
826 fdchanges [fdchangecnt - 1] = fd; 1852 fdchanges [fdchangecnt - 1] = fd;
827 } 1853 }
828} 1854}
829 1855
830/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1856/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
831inline_speed void 1857inline_speed void ecb_cold
832fd_kill (EV_P_ int fd) 1858fd_kill (EV_P_ int fd)
833{ 1859{
834 ev_io *w; 1860 ev_io *w;
835 1861
836 while ((w = (ev_io *)anfds [fd].head)) 1862 while ((w = (ev_io *)anfds [fd].head))
… …
838 ev_io_stop (EV_A_ w); 1864 ev_io_stop (EV_A_ w);
839 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1865 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
840 } 1866 }
841} 1867}
842 1868
843/* check whether the given fd is atcually valid, for error recovery */ 1869/* check whether the given fd is actually valid, for error recovery */
844inline_size int 1870inline_size int ecb_cold
845fd_valid (int fd) 1871fd_valid (int fd)
846{ 1872{
847#ifdef _WIN32 1873#ifdef _WIN32
848 return _get_osfhandle (fd) != -1; 1874 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
849#else 1875#else
850 return fcntl (fd, F_GETFD) != -1; 1876 return fcntl (fd, F_GETFD) != -1;
851#endif 1877#endif
852} 1878}
853 1879
854/* called on EBADF to verify fds */ 1880/* called on EBADF to verify fds */
855static void noinline 1881static void noinline ecb_cold
856fd_ebadf (EV_P) 1882fd_ebadf (EV_P)
857{ 1883{
858 int fd; 1884 int fd;
859 1885
860 for (fd = 0; fd < anfdmax; ++fd) 1886 for (fd = 0; fd < anfdmax; ++fd)
… …
862 if (!fd_valid (fd) && errno == EBADF) 1888 if (!fd_valid (fd) && errno == EBADF)
863 fd_kill (EV_A_ fd); 1889 fd_kill (EV_A_ fd);
864} 1890}
865 1891
866/* called on ENOMEM in select/poll to kill some fds and retry */ 1892/* called on ENOMEM in select/poll to kill some fds and retry */
867static void noinline 1893static void noinline ecb_cold
868fd_enomem (EV_P) 1894fd_enomem (EV_P)
869{ 1895{
870 int fd; 1896 int fd;
871 1897
872 for (fd = anfdmax; fd--; ) 1898 for (fd = anfdmax; fd--; )
873 if (anfds [fd].events) 1899 if (anfds [fd].events)
874 { 1900 {
875 fd_kill (EV_A_ fd); 1901 fd_kill (EV_A_ fd);
876 return; 1902 break;
877 } 1903 }
878} 1904}
879 1905
880/* usually called after fork if backend needs to re-arm all fds from scratch */ 1906/* usually called after fork if backend needs to re-arm all fds from scratch */
881static void noinline 1907static void noinline
… …
886 for (fd = 0; fd < anfdmax; ++fd) 1912 for (fd = 0; fd < anfdmax; ++fd)
887 if (anfds [fd].events) 1913 if (anfds [fd].events)
888 { 1914 {
889 anfds [fd].events = 0; 1915 anfds [fd].events = 0;
890 anfds [fd].emask = 0; 1916 anfds [fd].emask = 0;
891 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1917 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
892 } 1918 }
893} 1919}
894 1920
1921/* used to prepare libev internal fd's */
1922/* this is not fork-safe */
1923inline_speed void
1924fd_intern (int fd)
1925{
1926#ifdef _WIN32
1927 unsigned long arg = 1;
1928 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1929#else
1930 fcntl (fd, F_SETFD, FD_CLOEXEC);
1931 fcntl (fd, F_SETFL, O_NONBLOCK);
1932#endif
1933}
1934
895/*****************************************************************************/ 1935/*****************************************************************************/
896 1936
897/* 1937/*
898 * the heap functions want a real array index. array index 0 uis guaranteed to not 1938 * the heap functions want a real array index. array index 0 is guaranteed to not
899 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1939 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
900 * the branching factor of the d-tree. 1940 * the branching factor of the d-tree.
901 */ 1941 */
902 1942
903/* 1943/*
… …
971 2011
972 for (;;) 2012 for (;;)
973 { 2013 {
974 int c = k << 1; 2014 int c = k << 1;
975 2015
976 if (c > N + HEAP0 - 1) 2016 if (c >= N + HEAP0)
977 break; 2017 break;
978 2018
979 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2019 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
980 ? 1 : 0; 2020 ? 1 : 0;
981 2021
… …
1017 2057
1018/* move an element suitably so it is in a correct place */ 2058/* move an element suitably so it is in a correct place */
1019inline_size void 2059inline_size void
1020adjustheap (ANHE *heap, int N, int k) 2060adjustheap (ANHE *heap, int N, int k)
1021{ 2061{
1022 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2062 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1023 upheap (heap, k); 2063 upheap (heap, k);
1024 else 2064 else
1025 downheap (heap, N, k); 2065 downheap (heap, N, k);
1026} 2066}
1027 2067
… …
1040/*****************************************************************************/ 2080/*****************************************************************************/
1041 2081
1042/* associate signal watchers to a signal signal */ 2082/* associate signal watchers to a signal signal */
1043typedef struct 2083typedef struct
1044{ 2084{
2085 EV_ATOMIC_T pending;
2086#if EV_MULTIPLICITY
2087 EV_P;
2088#endif
1045 WL head; 2089 WL head;
1046 EV_ATOMIC_T gotsig;
1047} ANSIG; 2090} ANSIG;
1048 2091
1049static ANSIG *signals; 2092static ANSIG signals [EV_NSIG - 1];
1050static int signalmax;
1051
1052static EV_ATOMIC_T gotsig;
1053 2093
1054/*****************************************************************************/ 2094/*****************************************************************************/
1055 2095
1056/* used to prepare libev internal fd's */ 2096#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1057/* this is not fork-safe */ 2097
2098static void noinline ecb_cold
2099evpipe_init (EV_P)
2100{
2101 if (!ev_is_active (&pipe_w))
2102 {
2103 int fds [2];
2104
2105# if EV_USE_EVENTFD
2106 fds [0] = -1;
2107 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2108 if (fds [1] < 0 && errno == EINVAL)
2109 fds [1] = eventfd (0, 0);
2110
2111 if (fds [1] < 0)
2112# endif
2113 {
2114 while (pipe (fds))
2115 ev_syserr ("(libev) error creating signal/async pipe");
2116
2117 fd_intern (fds [0]);
2118 }
2119
2120 evpipe [0] = fds [0];
2121
2122 if (evpipe [1] < 0)
2123 evpipe [1] = fds [1]; /* first call, set write fd */
2124 else
2125 {
2126 /* on subsequent calls, do not change evpipe [1] */
2127 /* so that evpipe_write can always rely on its value. */
2128 /* this branch does not do anything sensible on windows, */
2129 /* so must not be executed on windows */
2130
2131 dup2 (fds [1], evpipe [1]);
2132 close (fds [1]);
2133 }
2134
2135 fd_intern (evpipe [1]);
2136
2137 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2138 ev_io_start (EV_A_ &pipe_w);
2139 ev_unref (EV_A); /* watcher should not keep loop alive */
2140 }
2141}
2142
1058inline_speed void 2143inline_speed void
1059fd_intern (int fd) 2144evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1060{ 2145{
1061#ifdef _WIN32 2146 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1062 unsigned long arg = 1;
1063 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1064#else
1065 fcntl (fd, F_SETFD, FD_CLOEXEC);
1066 fcntl (fd, F_SETFL, O_NONBLOCK);
1067#endif
1068}
1069 2147
1070static void noinline 2148 if (expect_true (*flag))
1071evpipe_init (EV_P) 2149 return;
1072{ 2150
1073 if (!ev_is_active (&pipe_w)) 2151 *flag = 1;
2152 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2153
2154 pipe_write_skipped = 1;
2155
2156 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2157
2158 if (pipe_write_wanted)
1074 { 2159 {
2160 int old_errno;
2161
2162 pipe_write_skipped = 0;
2163 ECB_MEMORY_FENCE_RELEASE;
2164
2165 old_errno = errno; /* save errno because write will clobber it */
2166
1075#if EV_USE_EVENTFD 2167#if EV_USE_EVENTFD
1076 if ((evfd = eventfd (0, 0)) >= 0) 2168 if (evpipe [0] < 0)
1077 { 2169 {
1078 evpipe [0] = -1; 2170 uint64_t counter = 1;
1079 fd_intern (evfd); 2171 write (evpipe [1], &counter, sizeof (uint64_t));
1080 ev_io_set (&pipe_w, evfd, EV_READ);
1081 } 2172 }
1082 else 2173 else
1083#endif 2174#endif
1084 { 2175 {
1085 while (pipe (evpipe)) 2176#ifdef _WIN32
1086 ev_syserr ("(libev) error creating signal/async pipe"); 2177 WSABUF buf;
1087 2178 DWORD sent;
1088 fd_intern (evpipe [0]); 2179 buf.buf = &buf;
1089 fd_intern (evpipe [1]); 2180 buf.len = 1;
1090 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2181 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2182#else
2183 write (evpipe [1], &(evpipe [1]), 1);
2184#endif
1091 } 2185 }
1092
1093 ev_io_start (EV_A_ &pipe_w);
1094 ev_unref (EV_A); /* watcher should not keep loop alive */
1095 }
1096}
1097
1098inline_size void
1099evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1100{
1101 if (!*flag)
1102 {
1103 int old_errno = errno; /* save errno because write might clobber it */
1104
1105 *flag = 1;
1106
1107#if EV_USE_EVENTFD
1108 if (evfd >= 0)
1109 {
1110 uint64_t counter = 1;
1111 write (evfd, &counter, sizeof (uint64_t));
1112 }
1113 else
1114#endif
1115 write (evpipe [1], &old_errno, 1);
1116 2186
1117 errno = old_errno; 2187 errno = old_errno;
1118 } 2188 }
1119} 2189}
1120 2190
1121/* called whenever the libev signal pipe */ 2191/* called whenever the libev signal pipe */
1122/* got some events (signal, async) */ 2192/* got some events (signal, async) */
1123static void 2193static void
1124pipecb (EV_P_ ev_io *iow, int revents) 2194pipecb (EV_P_ ev_io *iow, int revents)
1125{ 2195{
2196 int i;
2197
2198 if (revents & EV_READ)
2199 {
1126#if EV_USE_EVENTFD 2200#if EV_USE_EVENTFD
1127 if (evfd >= 0) 2201 if (evpipe [0] < 0)
1128 { 2202 {
1129 uint64_t counter; 2203 uint64_t counter;
1130 read (evfd, &counter, sizeof (uint64_t)); 2204 read (evpipe [1], &counter, sizeof (uint64_t));
1131 } 2205 }
1132 else 2206 else
1133#endif 2207#endif
1134 { 2208 {
1135 char dummy; 2209 char dummy[4];
2210#ifdef _WIN32
2211 WSABUF buf;
2212 DWORD recvd;
2213 DWORD flags = 0;
2214 buf.buf = dummy;
2215 buf.len = sizeof (dummy);
2216 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2217#else
1136 read (evpipe [0], &dummy, 1); 2218 read (evpipe [0], &dummy, sizeof (dummy));
2219#endif
2220 }
2221 }
2222
2223 pipe_write_skipped = 0;
2224
2225 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2226
2227#if EV_SIGNAL_ENABLE
2228 if (sig_pending)
1137 } 2229 {
2230 sig_pending = 0;
1138 2231
1139 if (gotsig && ev_is_default_loop (EV_A)) 2232 ECB_MEMORY_FENCE;
1140 {
1141 int signum;
1142 gotsig = 0;
1143 2233
1144 for (signum = signalmax; signum--; ) 2234 for (i = EV_NSIG - 1; i--; )
1145 if (signals [signum].gotsig) 2235 if (expect_false (signals [i].pending))
1146 ev_feed_signal_event (EV_A_ signum + 1); 2236 ev_feed_signal_event (EV_A_ i + 1);
1147 } 2237 }
2238#endif
1148 2239
1149#if EV_ASYNC_ENABLE 2240#if EV_ASYNC_ENABLE
1150 if (gotasync) 2241 if (async_pending)
1151 { 2242 {
1152 int i; 2243 async_pending = 0;
1153 gotasync = 0; 2244
2245 ECB_MEMORY_FENCE;
1154 2246
1155 for (i = asynccnt; i--; ) 2247 for (i = asynccnt; i--; )
1156 if (asyncs [i]->sent) 2248 if (asyncs [i]->sent)
1157 { 2249 {
1158 asyncs [i]->sent = 0; 2250 asyncs [i]->sent = 0;
2251 ECB_MEMORY_FENCE_RELEASE;
1159 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2252 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1160 } 2253 }
1161 } 2254 }
1162#endif 2255#endif
1163} 2256}
1164 2257
1165/*****************************************************************************/ 2258/*****************************************************************************/
1166 2259
2260void
2261ev_feed_signal (int signum) EV_THROW
2262{
2263#if EV_MULTIPLICITY
2264 EV_P;
2265 ECB_MEMORY_FENCE_ACQUIRE;
2266 EV_A = signals [signum - 1].loop;
2267
2268 if (!EV_A)
2269 return;
2270#endif
2271
2272 signals [signum - 1].pending = 1;
2273 evpipe_write (EV_A_ &sig_pending);
2274}
2275
1167static void 2276static void
1168ev_sighandler (int signum) 2277ev_sighandler (int signum)
1169{ 2278{
2279#ifdef _WIN32
2280 signal (signum, ev_sighandler);
2281#endif
2282
2283 ev_feed_signal (signum);
2284}
2285
2286void noinline
2287ev_feed_signal_event (EV_P_ int signum) EV_THROW
2288{
2289 WL w;
2290
2291 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2292 return;
2293
2294 --signum;
2295
1170#if EV_MULTIPLICITY 2296#if EV_MULTIPLICITY
1171 struct ev_loop *loop = &default_loop_struct; 2297 /* it is permissible to try to feed a signal to the wrong loop */
1172#endif 2298 /* or, likely more useful, feeding a signal nobody is waiting for */
1173 2299
1174#if _WIN32 2300 if (expect_false (signals [signum].loop != EV_A))
1175 signal (signum, ev_sighandler);
1176#endif
1177
1178 signals [signum - 1].gotsig = 1;
1179 evpipe_write (EV_A_ &gotsig);
1180}
1181
1182void noinline
1183ev_feed_signal_event (EV_P_ int signum)
1184{
1185 WL w;
1186
1187#if EV_MULTIPLICITY
1188 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1189#endif
1190
1191 --signum;
1192
1193 if (signum < 0 || signum >= signalmax)
1194 return; 2301 return;
2302#endif
1195 2303
1196 signals [signum].gotsig = 0; 2304 signals [signum].pending = 0;
2305 ECB_MEMORY_FENCE_RELEASE;
1197 2306
1198 for (w = signals [signum].head; w; w = w->next) 2307 for (w = signals [signum].head; w; w = w->next)
1199 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2308 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1200} 2309}
1201 2310
2311#if EV_USE_SIGNALFD
2312static void
2313sigfdcb (EV_P_ ev_io *iow, int revents)
2314{
2315 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2316
2317 for (;;)
2318 {
2319 ssize_t res = read (sigfd, si, sizeof (si));
2320
2321 /* not ISO-C, as res might be -1, but works with SuS */
2322 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2323 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2324
2325 if (res < (ssize_t)sizeof (si))
2326 break;
2327 }
2328}
2329#endif
2330
2331#endif
2332
1202/*****************************************************************************/ 2333/*****************************************************************************/
1203 2334
2335#if EV_CHILD_ENABLE
1204static WL childs [EV_PID_HASHSIZE]; 2336static WL childs [EV_PID_HASHSIZE];
1205
1206#ifndef _WIN32
1207 2337
1208static ev_signal childev; 2338static ev_signal childev;
1209 2339
1210#ifndef WIFCONTINUED 2340#ifndef WIFCONTINUED
1211# define WIFCONTINUED(status) 0 2341# define WIFCONTINUED(status) 0
… …
1216child_reap (EV_P_ int chain, int pid, int status) 2346child_reap (EV_P_ int chain, int pid, int status)
1217{ 2347{
1218 ev_child *w; 2348 ev_child *w;
1219 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2349 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1220 2350
1221 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2351 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1222 { 2352 {
1223 if ((w->pid == pid || !w->pid) 2353 if ((w->pid == pid || !w->pid)
1224 && (!traced || (w->flags & 1))) 2354 && (!traced || (w->flags & 1)))
1225 { 2355 {
1226 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2356 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1251 /* make sure we are called again until all children have been reaped */ 2381 /* make sure we are called again until all children have been reaped */
1252 /* we need to do it this way so that the callback gets called before we continue */ 2382 /* we need to do it this way so that the callback gets called before we continue */
1253 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2383 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1254 2384
1255 child_reap (EV_A_ pid, pid, status); 2385 child_reap (EV_A_ pid, pid, status);
1256 if (EV_PID_HASHSIZE > 1) 2386 if ((EV_PID_HASHSIZE) > 1)
1257 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2387 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1258} 2388}
1259 2389
1260#endif 2390#endif
1261 2391
1262/*****************************************************************************/ 2392/*****************************************************************************/
1263 2393
2394#if EV_USE_IOCP
2395# include "ev_iocp.c"
2396#endif
1264#if EV_USE_PORT 2397#if EV_USE_PORT
1265# include "ev_port.c" 2398# include "ev_port.c"
1266#endif 2399#endif
1267#if EV_USE_KQUEUE 2400#if EV_USE_KQUEUE
1268# include "ev_kqueue.c" 2401# include "ev_kqueue.c"
… …
1275#endif 2408#endif
1276#if EV_USE_SELECT 2409#if EV_USE_SELECT
1277# include "ev_select.c" 2410# include "ev_select.c"
1278#endif 2411#endif
1279 2412
1280int 2413int ecb_cold
1281ev_version_major (void) 2414ev_version_major (void) EV_THROW
1282{ 2415{
1283 return EV_VERSION_MAJOR; 2416 return EV_VERSION_MAJOR;
1284} 2417}
1285 2418
1286int 2419int ecb_cold
1287ev_version_minor (void) 2420ev_version_minor (void) EV_THROW
1288{ 2421{
1289 return EV_VERSION_MINOR; 2422 return EV_VERSION_MINOR;
1290} 2423}
1291 2424
1292/* return true if we are running with elevated privileges and should ignore env variables */ 2425/* return true if we are running with elevated privileges and should ignore env variables */
1293int inline_size 2426int inline_size ecb_cold
1294enable_secure (void) 2427enable_secure (void)
1295{ 2428{
1296#ifdef _WIN32 2429#ifdef _WIN32
1297 return 0; 2430 return 0;
1298#else 2431#else
1299 return getuid () != geteuid () 2432 return getuid () != geteuid ()
1300 || getgid () != getegid (); 2433 || getgid () != getegid ();
1301#endif 2434#endif
1302} 2435}
1303 2436
1304unsigned int 2437unsigned int ecb_cold
1305ev_supported_backends (void) 2438ev_supported_backends (void) EV_THROW
1306{ 2439{
1307 unsigned int flags = 0; 2440 unsigned int flags = 0;
1308 2441
1309 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2442 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1310 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2443 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1313 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2446 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1314 2447
1315 return flags; 2448 return flags;
1316} 2449}
1317 2450
1318unsigned int 2451unsigned int ecb_cold
1319ev_recommended_backends (void) 2452ev_recommended_backends (void) EV_THROW
1320{ 2453{
1321 unsigned int flags = ev_supported_backends (); 2454 unsigned int flags = ev_supported_backends ();
1322 2455
1323#ifndef __NetBSD__ 2456#ifndef __NetBSD__
1324 /* kqueue is borked on everything but netbsd apparently */ 2457 /* kqueue is borked on everything but netbsd apparently */
… …
1328#ifdef __APPLE__ 2461#ifdef __APPLE__
1329 /* only select works correctly on that "unix-certified" platform */ 2462 /* only select works correctly on that "unix-certified" platform */
1330 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2463 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1331 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2464 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1332#endif 2465#endif
2466#ifdef __FreeBSD__
2467 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2468#endif
1333 2469
1334 return flags; 2470 return flags;
1335} 2471}
1336 2472
2473unsigned int ecb_cold
2474ev_embeddable_backends (void) EV_THROW
2475{
2476 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2477
2478 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2479 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2480 flags &= ~EVBACKEND_EPOLL;
2481
2482 return flags;
2483}
2484
1337unsigned int 2485unsigned int
1338ev_embeddable_backends (void) 2486ev_backend (EV_P) EV_THROW
1339{ 2487{
1340 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2488 return backend;
1341
1342 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1343 /* please fix it and tell me how to detect the fix */
1344 flags &= ~EVBACKEND_EPOLL;
1345
1346 return flags;
1347} 2489}
1348 2490
2491#if EV_FEATURE_API
1349unsigned int 2492unsigned int
1350ev_backend (EV_P) 2493ev_iteration (EV_P) EV_THROW
1351{ 2494{
1352 return backend; 2495 return loop_count;
1353} 2496}
1354 2497
1355unsigned int 2498unsigned int
1356ev_loop_count (EV_P) 2499ev_depth (EV_P) EV_THROW
1357{ 2500{
1358 return loop_count; 2501 return loop_depth;
1359} 2502}
1360 2503
1361void 2504void
1362ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2505ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1363{ 2506{
1364 io_blocktime = interval; 2507 io_blocktime = interval;
1365} 2508}
1366 2509
1367void 2510void
1368ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2511ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1369{ 2512{
1370 timeout_blocktime = interval; 2513 timeout_blocktime = interval;
1371} 2514}
1372 2515
2516void
2517ev_set_userdata (EV_P_ void *data) EV_THROW
2518{
2519 userdata = data;
2520}
2521
2522void *
2523ev_userdata (EV_P) EV_THROW
2524{
2525 return userdata;
2526}
2527
2528void
2529ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2530{
2531 invoke_cb = invoke_pending_cb;
2532}
2533
2534void
2535ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2536{
2537 release_cb = release;
2538 acquire_cb = acquire;
2539}
2540#endif
2541
1373/* initialise a loop structure, must be zero-initialised */ 2542/* initialise a loop structure, must be zero-initialised */
1374static void noinline 2543static void noinline ecb_cold
1375loop_init (EV_P_ unsigned int flags) 2544loop_init (EV_P_ unsigned int flags) EV_THROW
1376{ 2545{
1377 if (!backend) 2546 if (!backend)
1378 { 2547 {
2548 origflags = flags;
2549
1379#if EV_USE_REALTIME 2550#if EV_USE_REALTIME
1380 if (!have_realtime) 2551 if (!have_realtime)
1381 { 2552 {
1382 struct timespec ts; 2553 struct timespec ts;
1383 2554
… …
1394 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2565 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1395 have_monotonic = 1; 2566 have_monotonic = 1;
1396 } 2567 }
1397#endif 2568#endif
1398 2569
1399 ev_rt_now = ev_time ();
1400 mn_now = get_clock ();
1401 now_floor = mn_now;
1402 rtmn_diff = ev_rt_now - mn_now;
1403
1404 io_blocktime = 0.;
1405 timeout_blocktime = 0.;
1406 backend = 0;
1407 backend_fd = -1;
1408 gotasync = 0;
1409#if EV_USE_INOTIFY
1410 fs_fd = -2;
1411#endif
1412
1413 /* pid check not overridable via env */ 2570 /* pid check not overridable via env */
1414#ifndef _WIN32 2571#ifndef _WIN32
1415 if (flags & EVFLAG_FORKCHECK) 2572 if (flags & EVFLAG_FORKCHECK)
1416 curpid = getpid (); 2573 curpid = getpid ();
1417#endif 2574#endif
… …
1419 if (!(flags & EVFLAG_NOENV) 2576 if (!(flags & EVFLAG_NOENV)
1420 && !enable_secure () 2577 && !enable_secure ()
1421 && getenv ("LIBEV_FLAGS")) 2578 && getenv ("LIBEV_FLAGS"))
1422 flags = atoi (getenv ("LIBEV_FLAGS")); 2579 flags = atoi (getenv ("LIBEV_FLAGS"));
1423 2580
1424 if (!(flags & 0x0000ffffU)) 2581 ev_rt_now = ev_time ();
2582 mn_now = get_clock ();
2583 now_floor = mn_now;
2584 rtmn_diff = ev_rt_now - mn_now;
2585#if EV_FEATURE_API
2586 invoke_cb = ev_invoke_pending;
2587#endif
2588
2589 io_blocktime = 0.;
2590 timeout_blocktime = 0.;
2591 backend = 0;
2592 backend_fd = -1;
2593 sig_pending = 0;
2594#if EV_ASYNC_ENABLE
2595 async_pending = 0;
2596#endif
2597 pipe_write_skipped = 0;
2598 pipe_write_wanted = 0;
2599 evpipe [0] = -1;
2600 evpipe [1] = -1;
2601#if EV_USE_INOTIFY
2602 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2603#endif
2604#if EV_USE_SIGNALFD
2605 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2606#endif
2607
2608 if (!(flags & EVBACKEND_MASK))
1425 flags |= ev_recommended_backends (); 2609 flags |= ev_recommended_backends ();
1426 2610
2611#if EV_USE_IOCP
2612 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2613#endif
1427#if EV_USE_PORT 2614#if EV_USE_PORT
1428 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2615 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1429#endif 2616#endif
1430#if EV_USE_KQUEUE 2617#if EV_USE_KQUEUE
1431 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2618 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1440 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2627 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1441#endif 2628#endif
1442 2629
1443 ev_prepare_init (&pending_w, pendingcb); 2630 ev_prepare_init (&pending_w, pendingcb);
1444 2631
2632#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1445 ev_init (&pipe_w, pipecb); 2633 ev_init (&pipe_w, pipecb);
1446 ev_set_priority (&pipe_w, EV_MAXPRI); 2634 ev_set_priority (&pipe_w, EV_MAXPRI);
2635#endif
1447 } 2636 }
1448} 2637}
1449 2638
1450/* free up a loop structure */ 2639/* free up a loop structure */
1451static void noinline 2640void ecb_cold
1452loop_destroy (EV_P) 2641ev_loop_destroy (EV_P)
1453{ 2642{
1454 int i; 2643 int i;
1455 2644
2645#if EV_MULTIPLICITY
2646 /* mimic free (0) */
2647 if (!EV_A)
2648 return;
2649#endif
2650
2651#if EV_CLEANUP_ENABLE
2652 /* queue cleanup watchers (and execute them) */
2653 if (expect_false (cleanupcnt))
2654 {
2655 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2656 EV_INVOKE_PENDING;
2657 }
2658#endif
2659
2660#if EV_CHILD_ENABLE
2661 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2662 {
2663 ev_ref (EV_A); /* child watcher */
2664 ev_signal_stop (EV_A_ &childev);
2665 }
2666#endif
2667
1456 if (ev_is_active (&pipe_w)) 2668 if (ev_is_active (&pipe_w))
1457 { 2669 {
1458 ev_ref (EV_A); /* signal watcher */ 2670 /*ev_ref (EV_A);*/
1459 ev_io_stop (EV_A_ &pipe_w); 2671 /*ev_io_stop (EV_A_ &pipe_w);*/
1460 2672
2673 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2674 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2675 }
2676
1461#if EV_USE_EVENTFD 2677#if EV_USE_SIGNALFD
1462 if (evfd >= 0) 2678 if (ev_is_active (&sigfd_w))
1463 close (evfd); 2679 close (sigfd);
1464#endif 2680#endif
1465
1466 if (evpipe [0] >= 0)
1467 {
1468 close (evpipe [0]);
1469 close (evpipe [1]);
1470 }
1471 }
1472 2681
1473#if EV_USE_INOTIFY 2682#if EV_USE_INOTIFY
1474 if (fs_fd >= 0) 2683 if (fs_fd >= 0)
1475 close (fs_fd); 2684 close (fs_fd);
1476#endif 2685#endif
1477 2686
1478 if (backend_fd >= 0) 2687 if (backend_fd >= 0)
1479 close (backend_fd); 2688 close (backend_fd);
1480 2689
2690#if EV_USE_IOCP
2691 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2692#endif
1481#if EV_USE_PORT 2693#if EV_USE_PORT
1482 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2694 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1483#endif 2695#endif
1484#if EV_USE_KQUEUE 2696#if EV_USE_KQUEUE
1485 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2697 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1500#if EV_IDLE_ENABLE 2712#if EV_IDLE_ENABLE
1501 array_free (idle, [i]); 2713 array_free (idle, [i]);
1502#endif 2714#endif
1503 } 2715 }
1504 2716
1505 ev_free (anfds); anfdmax = 0; 2717 ev_free (anfds); anfds = 0; anfdmax = 0;
1506 2718
1507 /* have to use the microsoft-never-gets-it-right macro */ 2719 /* have to use the microsoft-never-gets-it-right macro */
1508 array_free (rfeed, EMPTY); 2720 array_free (rfeed, EMPTY);
1509 array_free (fdchange, EMPTY); 2721 array_free (fdchange, EMPTY);
1510 array_free (timer, EMPTY); 2722 array_free (timer, EMPTY);
… …
1512 array_free (periodic, EMPTY); 2724 array_free (periodic, EMPTY);
1513#endif 2725#endif
1514#if EV_FORK_ENABLE 2726#if EV_FORK_ENABLE
1515 array_free (fork, EMPTY); 2727 array_free (fork, EMPTY);
1516#endif 2728#endif
2729#if EV_CLEANUP_ENABLE
2730 array_free (cleanup, EMPTY);
2731#endif
1517 array_free (prepare, EMPTY); 2732 array_free (prepare, EMPTY);
1518 array_free (check, EMPTY); 2733 array_free (check, EMPTY);
1519#if EV_ASYNC_ENABLE 2734#if EV_ASYNC_ENABLE
1520 array_free (async, EMPTY); 2735 array_free (async, EMPTY);
1521#endif 2736#endif
1522 2737
1523 backend = 0; 2738 backend = 0;
2739
2740#if EV_MULTIPLICITY
2741 if (ev_is_default_loop (EV_A))
2742#endif
2743 ev_default_loop_ptr = 0;
2744#if EV_MULTIPLICITY
2745 else
2746 ev_free (EV_A);
2747#endif
1524} 2748}
1525 2749
1526#if EV_USE_INOTIFY 2750#if EV_USE_INOTIFY
1527inline_size void infy_fork (EV_P); 2751inline_size void infy_fork (EV_P);
1528#endif 2752#endif
… …
1541#endif 2765#endif
1542#if EV_USE_INOTIFY 2766#if EV_USE_INOTIFY
1543 infy_fork (EV_A); 2767 infy_fork (EV_A);
1544#endif 2768#endif
1545 2769
2770#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1546 if (ev_is_active (&pipe_w)) 2771 if (ev_is_active (&pipe_w))
1547 { 2772 {
1548 /* this "locks" the handlers against writing to the pipe */ 2773 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1549 /* while we modify the fd vars */
1550 gotsig = 1;
1551#if EV_ASYNC_ENABLE
1552 gotasync = 1;
1553#endif
1554 2774
1555 ev_ref (EV_A); 2775 ev_ref (EV_A);
1556 ev_io_stop (EV_A_ &pipe_w); 2776 ev_io_stop (EV_A_ &pipe_w);
1557 2777
1558#if EV_USE_EVENTFD
1559 if (evfd >= 0)
1560 close (evfd);
1561#endif
1562
1563 if (evpipe [0] >= 0) 2778 if (evpipe [0] >= 0)
1564 { 2779 EV_WIN32_CLOSE_FD (evpipe [0]);
1565 close (evpipe [0]);
1566 close (evpipe [1]);
1567 }
1568 2780
1569 evpipe_init (EV_A); 2781 evpipe_init (EV_A);
1570 /* now iterate over everything, in case we missed something */ 2782 /* iterate over everything, in case we missed something before */
1571 pipecb (EV_A_ &pipe_w, EV_READ); 2783 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1572 } 2784 }
2785#endif
1573 2786
1574 postfork = 0; 2787 postfork = 0;
1575} 2788}
1576 2789
1577#if EV_MULTIPLICITY 2790#if EV_MULTIPLICITY
1578 2791
1579struct ev_loop * 2792struct ev_loop * ecb_cold
1580ev_loop_new (unsigned int flags) 2793ev_loop_new (unsigned int flags) EV_THROW
1581{ 2794{
1582 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2795 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1583 2796
1584 memset (loop, 0, sizeof (struct ev_loop)); 2797 memset (EV_A, 0, sizeof (struct ev_loop));
1585
1586 loop_init (EV_A_ flags); 2798 loop_init (EV_A_ flags);
1587 2799
1588 if (ev_backend (EV_A)) 2800 if (ev_backend (EV_A))
1589 return loop; 2801 return EV_A;
1590 2802
2803 ev_free (EV_A);
1591 return 0; 2804 return 0;
1592} 2805}
1593 2806
1594void 2807#endif /* multiplicity */
1595ev_loop_destroy (EV_P)
1596{
1597 loop_destroy (EV_A);
1598 ev_free (loop);
1599}
1600
1601void
1602ev_loop_fork (EV_P)
1603{
1604 postfork = 1; /* must be in line with ev_default_fork */
1605}
1606 2808
1607#if EV_VERIFY 2809#if EV_VERIFY
1608static void noinline 2810static void noinline ecb_cold
1609verify_watcher (EV_P_ W w) 2811verify_watcher (EV_P_ W w)
1610{ 2812{
1611 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2813 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1612 2814
1613 if (w->pending) 2815 if (w->pending)
1614 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2816 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1615} 2817}
1616 2818
1617static void noinline 2819static void noinline ecb_cold
1618verify_heap (EV_P_ ANHE *heap, int N) 2820verify_heap (EV_P_ ANHE *heap, int N)
1619{ 2821{
1620 int i; 2822 int i;
1621 2823
1622 for (i = HEAP0; i < N + HEAP0; ++i) 2824 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1627 2829
1628 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2830 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1629 } 2831 }
1630} 2832}
1631 2833
1632static void noinline 2834static void noinline ecb_cold
1633array_verify (EV_P_ W *ws, int cnt) 2835array_verify (EV_P_ W *ws, int cnt)
1634{ 2836{
1635 while (cnt--) 2837 while (cnt--)
1636 { 2838 {
1637 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2839 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1638 verify_watcher (EV_A_ ws [cnt]); 2840 verify_watcher (EV_A_ ws [cnt]);
1639 } 2841 }
1640} 2842}
1641#endif 2843#endif
1642 2844
1643void 2845#if EV_FEATURE_API
1644ev_loop_verify (EV_P) 2846void ecb_cold
2847ev_verify (EV_P) EV_THROW
1645{ 2848{
1646#if EV_VERIFY 2849#if EV_VERIFY
1647 int i; 2850 int i;
1648 WL w; 2851 WL w, w2;
1649 2852
1650 assert (activecnt >= -1); 2853 assert (activecnt >= -1);
1651 2854
1652 assert (fdchangemax >= fdchangecnt); 2855 assert (fdchangemax >= fdchangecnt);
1653 for (i = 0; i < fdchangecnt; ++i) 2856 for (i = 0; i < fdchangecnt; ++i)
1654 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2857 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1655 2858
1656 assert (anfdmax >= 0); 2859 assert (anfdmax >= 0);
1657 for (i = 0; i < anfdmax; ++i) 2860 for (i = 0; i < anfdmax; ++i)
2861 {
2862 int j = 0;
2863
1658 for (w = anfds [i].head; w; w = w->next) 2864 for (w = w2 = anfds [i].head; w; w = w->next)
1659 { 2865 {
1660 verify_watcher (EV_A_ (W)w); 2866 verify_watcher (EV_A_ (W)w);
2867
2868 if (j++ & 1)
2869 {
2870 assert (("libev: io watcher list contains a loop", w != w2));
2871 w2 = w2->next;
2872 }
2873
1661 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2874 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1662 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2875 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1663 } 2876 }
2877 }
1664 2878
1665 assert (timermax >= timercnt); 2879 assert (timermax >= timercnt);
1666 verify_heap (EV_A_ timers, timercnt); 2880 verify_heap (EV_A_ timers, timercnt);
1667 2881
1668#if EV_PERIODIC_ENABLE 2882#if EV_PERIODIC_ENABLE
… …
1683#if EV_FORK_ENABLE 2897#if EV_FORK_ENABLE
1684 assert (forkmax >= forkcnt); 2898 assert (forkmax >= forkcnt);
1685 array_verify (EV_A_ (W *)forks, forkcnt); 2899 array_verify (EV_A_ (W *)forks, forkcnt);
1686#endif 2900#endif
1687 2901
2902#if EV_CLEANUP_ENABLE
2903 assert (cleanupmax >= cleanupcnt);
2904 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2905#endif
2906
1688#if EV_ASYNC_ENABLE 2907#if EV_ASYNC_ENABLE
1689 assert (asyncmax >= asynccnt); 2908 assert (asyncmax >= asynccnt);
1690 array_verify (EV_A_ (W *)asyncs, asynccnt); 2909 array_verify (EV_A_ (W *)asyncs, asynccnt);
1691#endif 2910#endif
1692 2911
2912#if EV_PREPARE_ENABLE
1693 assert (preparemax >= preparecnt); 2913 assert (preparemax >= preparecnt);
1694 array_verify (EV_A_ (W *)prepares, preparecnt); 2914 array_verify (EV_A_ (W *)prepares, preparecnt);
2915#endif
1695 2916
2917#if EV_CHECK_ENABLE
1696 assert (checkmax >= checkcnt); 2918 assert (checkmax >= checkcnt);
1697 array_verify (EV_A_ (W *)checks, checkcnt); 2919 array_verify (EV_A_ (W *)checks, checkcnt);
2920#endif
1698 2921
1699# if 0 2922# if 0
2923#if EV_CHILD_ENABLE
1700 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2924 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1701 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2925 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2926#endif
1702# endif 2927# endif
1703#endif 2928#endif
1704} 2929}
1705 2930#endif
1706#endif /* multiplicity */
1707 2931
1708#if EV_MULTIPLICITY 2932#if EV_MULTIPLICITY
1709struct ev_loop * 2933struct ev_loop * ecb_cold
1710ev_default_loop_init (unsigned int flags)
1711#else 2934#else
1712int 2935int
2936#endif
1713ev_default_loop (unsigned int flags) 2937ev_default_loop (unsigned int flags) EV_THROW
1714#endif
1715{ 2938{
1716 if (!ev_default_loop_ptr) 2939 if (!ev_default_loop_ptr)
1717 { 2940 {
1718#if EV_MULTIPLICITY 2941#if EV_MULTIPLICITY
1719 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2942 EV_P = ev_default_loop_ptr = &default_loop_struct;
1720#else 2943#else
1721 ev_default_loop_ptr = 1; 2944 ev_default_loop_ptr = 1;
1722#endif 2945#endif
1723 2946
1724 loop_init (EV_A_ flags); 2947 loop_init (EV_A_ flags);
1725 2948
1726 if (ev_backend (EV_A)) 2949 if (ev_backend (EV_A))
1727 { 2950 {
1728#ifndef _WIN32 2951#if EV_CHILD_ENABLE
1729 ev_signal_init (&childev, childcb, SIGCHLD); 2952 ev_signal_init (&childev, childcb, SIGCHLD);
1730 ev_set_priority (&childev, EV_MAXPRI); 2953 ev_set_priority (&childev, EV_MAXPRI);
1731 ev_signal_start (EV_A_ &childev); 2954 ev_signal_start (EV_A_ &childev);
1732 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2955 ev_unref (EV_A); /* child watcher should not keep loop alive */
1733#endif 2956#endif
… …
1738 2961
1739 return ev_default_loop_ptr; 2962 return ev_default_loop_ptr;
1740} 2963}
1741 2964
1742void 2965void
1743ev_default_destroy (void) 2966ev_loop_fork (EV_P) EV_THROW
1744{ 2967{
1745#if EV_MULTIPLICITY 2968 postfork = 1;
1746 struct ev_loop *loop = ev_default_loop_ptr;
1747#endif
1748
1749 ev_default_loop_ptr = 0;
1750
1751#ifndef _WIN32
1752 ev_ref (EV_A); /* child watcher */
1753 ev_signal_stop (EV_A_ &childev);
1754#endif
1755
1756 loop_destroy (EV_A);
1757}
1758
1759void
1760ev_default_fork (void)
1761{
1762#if EV_MULTIPLICITY
1763 struct ev_loop *loop = ev_default_loop_ptr;
1764#endif
1765
1766 postfork = 1; /* must be in line with ev_loop_fork */
1767} 2969}
1768 2970
1769/*****************************************************************************/ 2971/*****************************************************************************/
1770 2972
1771void 2973void
1772ev_invoke (EV_P_ void *w, int revents) 2974ev_invoke (EV_P_ void *w, int revents)
1773{ 2975{
1774 EV_CB_INVOKE ((W)w, revents); 2976 EV_CB_INVOKE ((W)w, revents);
1775} 2977}
1776 2978
1777inline_speed void 2979unsigned int
1778call_pending (EV_P) 2980ev_pending_count (EV_P) EV_THROW
1779{ 2981{
1780 int pri; 2982 int pri;
2983 unsigned int count = 0;
1781 2984
1782 for (pri = NUMPRI; pri--; ) 2985 for (pri = NUMPRI; pri--; )
2986 count += pendingcnt [pri];
2987
2988 return count;
2989}
2990
2991void noinline
2992ev_invoke_pending (EV_P)
2993{
2994 pendingpri = NUMPRI;
2995
2996 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2997 {
2998 --pendingpri;
2999
1783 while (pendingcnt [pri]) 3000 while (pendingcnt [pendingpri])
1784 { 3001 {
1785 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3002 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1786 3003
1787 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1788 /* ^ this is no longer true, as pending_w could be here */
1789
1790 p->w->pending = 0; 3004 p->w->pending = 0;
1791 EV_CB_INVOKE (p->w, p->events); 3005 EV_CB_INVOKE (p->w, p->events);
1792 EV_FREQUENT_CHECK; 3006 EV_FREQUENT_CHECK;
1793 } 3007 }
3008 }
1794} 3009}
1795 3010
1796#if EV_IDLE_ENABLE 3011#if EV_IDLE_ENABLE
1797/* make idle watchers pending. this handles the "call-idle */ 3012/* make idle watchers pending. this handles the "call-idle */
1798/* only when higher priorities are idle" logic */ 3013/* only when higher priorities are idle" logic */
… …
1850 EV_FREQUENT_CHECK; 3065 EV_FREQUENT_CHECK;
1851 feed_reverse (EV_A_ (W)w); 3066 feed_reverse (EV_A_ (W)w);
1852 } 3067 }
1853 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3068 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1854 3069
1855 feed_reverse_done (EV_A_ EV_TIMEOUT); 3070 feed_reverse_done (EV_A_ EV_TIMER);
1856 } 3071 }
1857} 3072}
1858 3073
1859#if EV_PERIODIC_ENABLE 3074#if EV_PERIODIC_ENABLE
3075
3076static void noinline
3077periodic_recalc (EV_P_ ev_periodic *w)
3078{
3079 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3080 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3081
3082 /* the above almost always errs on the low side */
3083 while (at <= ev_rt_now)
3084 {
3085 ev_tstamp nat = at + w->interval;
3086
3087 /* when resolution fails us, we use ev_rt_now */
3088 if (expect_false (nat == at))
3089 {
3090 at = ev_rt_now;
3091 break;
3092 }
3093
3094 at = nat;
3095 }
3096
3097 ev_at (w) = at;
3098}
3099
1860/* make periodics pending */ 3100/* make periodics pending */
1861inline_size void 3101inline_size void
1862periodics_reify (EV_P) 3102periodics_reify (EV_P)
1863{ 3103{
1864 EV_FREQUENT_CHECK; 3104 EV_FREQUENT_CHECK;
1865 3105
1866 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3106 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1867 { 3107 {
1868 int feed_count = 0;
1869
1870 do 3108 do
1871 { 3109 {
1872 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3110 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1873 3111
1874 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3112 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1883 ANHE_at_cache (periodics [HEAP0]); 3121 ANHE_at_cache (periodics [HEAP0]);
1884 downheap (periodics, periodiccnt, HEAP0); 3122 downheap (periodics, periodiccnt, HEAP0);
1885 } 3123 }
1886 else if (w->interval) 3124 else if (w->interval)
1887 { 3125 {
1888 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3126 periodic_recalc (EV_A_ w);
1889 /* if next trigger time is not sufficiently in the future, put it there */
1890 /* this might happen because of floating point inexactness */
1891 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1892 {
1893 ev_at (w) += w->interval;
1894
1895 /* if interval is unreasonably low we might still have a time in the past */
1896 /* so correct this. this will make the periodic very inexact, but the user */
1897 /* has effectively asked to get triggered more often than possible */
1898 if (ev_at (w) < ev_rt_now)
1899 ev_at (w) = ev_rt_now;
1900 }
1901
1902 ANHE_at_cache (periodics [HEAP0]); 3127 ANHE_at_cache (periodics [HEAP0]);
1903 downheap (periodics, periodiccnt, HEAP0); 3128 downheap (periodics, periodiccnt, HEAP0);
1904 } 3129 }
1905 else 3130 else
1906 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3131 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1913 feed_reverse_done (EV_A_ EV_PERIODIC); 3138 feed_reverse_done (EV_A_ EV_PERIODIC);
1914 } 3139 }
1915} 3140}
1916 3141
1917/* simply recalculate all periodics */ 3142/* simply recalculate all periodics */
1918/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3143/* TODO: maybe ensure that at least one event happens when jumping forward? */
1919static void noinline 3144static void noinline ecb_cold
1920periodics_reschedule (EV_P) 3145periodics_reschedule (EV_P)
1921{ 3146{
1922 int i; 3147 int i;
1923 3148
1924 /* adjust periodics after time jump */ 3149 /* adjust periodics after time jump */
… …
1927 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3152 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1928 3153
1929 if (w->reschedule_cb) 3154 if (w->reschedule_cb)
1930 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3155 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1931 else if (w->interval) 3156 else if (w->interval)
1932 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3157 periodic_recalc (EV_A_ w);
1933 3158
1934 ANHE_at_cache (periodics [i]); 3159 ANHE_at_cache (periodics [i]);
1935 } 3160 }
1936 3161
1937 reheap (periodics, periodiccnt); 3162 reheap (periodics, periodiccnt);
1938} 3163}
1939#endif 3164#endif
1940 3165
1941/* adjust all timers by a given offset */ 3166/* adjust all timers by a given offset */
1942static void noinline 3167static void noinline ecb_cold
1943timers_reschedule (EV_P_ ev_tstamp adjust) 3168timers_reschedule (EV_P_ ev_tstamp adjust)
1944{ 3169{
1945 int i; 3170 int i;
1946 3171
1947 for (i = 0; i < timercnt; ++i) 3172 for (i = 0; i < timercnt; ++i)
… …
1951 ANHE_at_cache (*he); 3176 ANHE_at_cache (*he);
1952 } 3177 }
1953} 3178}
1954 3179
1955/* fetch new monotonic and realtime times from the kernel */ 3180/* fetch new monotonic and realtime times from the kernel */
1956/* also detetc if there was a timejump, and act accordingly */ 3181/* also detect if there was a timejump, and act accordingly */
1957inline_speed void 3182inline_speed void
1958time_update (EV_P_ ev_tstamp max_block) 3183time_update (EV_P_ ev_tstamp max_block)
1959{ 3184{
1960#if EV_USE_MONOTONIC 3185#if EV_USE_MONOTONIC
1961 if (expect_true (have_monotonic)) 3186 if (expect_true (have_monotonic))
… …
1984 * doesn't hurt either as we only do this on time-jumps or 3209 * doesn't hurt either as we only do this on time-jumps or
1985 * in the unlikely event of having been preempted here. 3210 * in the unlikely event of having been preempted here.
1986 */ 3211 */
1987 for (i = 4; --i; ) 3212 for (i = 4; --i; )
1988 { 3213 {
3214 ev_tstamp diff;
1989 rtmn_diff = ev_rt_now - mn_now; 3215 rtmn_diff = ev_rt_now - mn_now;
1990 3216
3217 diff = odiff - rtmn_diff;
3218
1991 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3219 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1992 return; /* all is well */ 3220 return; /* all is well */
1993 3221
1994 ev_rt_now = ev_time (); 3222 ev_rt_now = ev_time ();
1995 mn_now = get_clock (); 3223 mn_now = get_clock ();
1996 now_floor = mn_now; 3224 now_floor = mn_now;
… …
2018 3246
2019 mn_now = ev_rt_now; 3247 mn_now = ev_rt_now;
2020 } 3248 }
2021} 3249}
2022 3250
2023static int loop_done; 3251int
2024
2025void
2026ev_loop (EV_P_ int flags) 3252ev_run (EV_P_ int flags)
2027{ 3253{
3254#if EV_FEATURE_API
3255 ++loop_depth;
3256#endif
3257
3258 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3259
2028 loop_done = EVUNLOOP_CANCEL; 3260 loop_done = EVBREAK_CANCEL;
2029 3261
2030 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3262 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2031 3263
2032 do 3264 do
2033 { 3265 {
2034#if EV_VERIFY >= 2 3266#if EV_VERIFY >= 2
2035 ev_loop_verify (EV_A); 3267 ev_verify (EV_A);
2036#endif 3268#endif
2037 3269
2038#ifndef _WIN32 3270#ifndef _WIN32
2039 if (expect_false (curpid)) /* penalise the forking check even more */ 3271 if (expect_false (curpid)) /* penalise the forking check even more */
2040 if (expect_false (getpid () != curpid)) 3272 if (expect_false (getpid () != curpid))
… …
2048 /* we might have forked, so queue fork handlers */ 3280 /* we might have forked, so queue fork handlers */
2049 if (expect_false (postfork)) 3281 if (expect_false (postfork))
2050 if (forkcnt) 3282 if (forkcnt)
2051 { 3283 {
2052 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3284 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2053 call_pending (EV_A); 3285 EV_INVOKE_PENDING;
2054 } 3286 }
2055#endif 3287#endif
2056 3288
3289#if EV_PREPARE_ENABLE
2057 /* queue prepare watchers (and execute them) */ 3290 /* queue prepare watchers (and execute them) */
2058 if (expect_false (preparecnt)) 3291 if (expect_false (preparecnt))
2059 { 3292 {
2060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3293 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2061 call_pending (EV_A); 3294 EV_INVOKE_PENDING;
2062 } 3295 }
3296#endif
3297
3298 if (expect_false (loop_done))
3299 break;
2063 3300
2064 /* we might have forked, so reify kernel state if necessary */ 3301 /* we might have forked, so reify kernel state if necessary */
2065 if (expect_false (postfork)) 3302 if (expect_false (postfork))
2066 loop_fork (EV_A); 3303 loop_fork (EV_A);
2067 3304
… …
2071 /* calculate blocking time */ 3308 /* calculate blocking time */
2072 { 3309 {
2073 ev_tstamp waittime = 0.; 3310 ev_tstamp waittime = 0.;
2074 ev_tstamp sleeptime = 0.; 3311 ev_tstamp sleeptime = 0.;
2075 3312
3313 /* remember old timestamp for io_blocktime calculation */
3314 ev_tstamp prev_mn_now = mn_now;
3315
3316 /* update time to cancel out callback processing overhead */
3317 time_update (EV_A_ 1e100);
3318
3319 /* from now on, we want a pipe-wake-up */
3320 pipe_write_wanted = 1;
3321
3322 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3323
2076 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3324 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2077 { 3325 {
2078 /* update time to cancel out callback processing overhead */
2079 time_update (EV_A_ 1e100);
2080
2081 waittime = MAX_BLOCKTIME; 3326 waittime = MAX_BLOCKTIME;
2082 3327
2083 if (timercnt) 3328 if (timercnt)
2084 { 3329 {
2085 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3330 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2086 if (waittime > to) waittime = to; 3331 if (waittime > to) waittime = to;
2087 } 3332 }
2088 3333
2089#if EV_PERIODIC_ENABLE 3334#if EV_PERIODIC_ENABLE
2090 if (periodiccnt) 3335 if (periodiccnt)
2091 { 3336 {
2092 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3337 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2093 if (waittime > to) waittime = to; 3338 if (waittime > to) waittime = to;
2094 } 3339 }
2095#endif 3340#endif
2096 3341
3342 /* don't let timeouts decrease the waittime below timeout_blocktime */
2097 if (expect_false (waittime < timeout_blocktime)) 3343 if (expect_false (waittime < timeout_blocktime))
2098 waittime = timeout_blocktime; 3344 waittime = timeout_blocktime;
2099 3345
2100 sleeptime = waittime - backend_fudge; 3346 /* at this point, we NEED to wait, so we have to ensure */
3347 /* to pass a minimum nonzero value to the backend */
3348 if (expect_false (waittime < backend_mintime))
3349 waittime = backend_mintime;
2101 3350
3351 /* extra check because io_blocktime is commonly 0 */
2102 if (expect_true (sleeptime > io_blocktime)) 3352 if (expect_false (io_blocktime))
2103 sleeptime = io_blocktime;
2104
2105 if (sleeptime)
2106 { 3353 {
3354 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3355
3356 if (sleeptime > waittime - backend_mintime)
3357 sleeptime = waittime - backend_mintime;
3358
3359 if (expect_true (sleeptime > 0.))
3360 {
2107 ev_sleep (sleeptime); 3361 ev_sleep (sleeptime);
2108 waittime -= sleeptime; 3362 waittime -= sleeptime;
3363 }
2109 } 3364 }
2110 } 3365 }
2111 3366
3367#if EV_FEATURE_API
2112 ++loop_count; 3368 ++loop_count;
3369#endif
3370 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2113 backend_poll (EV_A_ waittime); 3371 backend_poll (EV_A_ waittime);
3372 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3373
3374 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3375
3376 ECB_MEMORY_FENCE_ACQUIRE;
3377 if (pipe_write_skipped)
3378 {
3379 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3380 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3381 }
3382
2114 3383
2115 /* update ev_rt_now, do magic */ 3384 /* update ev_rt_now, do magic */
2116 time_update (EV_A_ waittime + sleeptime); 3385 time_update (EV_A_ waittime + sleeptime);
2117 } 3386 }
2118 3387
… …
2125#if EV_IDLE_ENABLE 3394#if EV_IDLE_ENABLE
2126 /* queue idle watchers unless other events are pending */ 3395 /* queue idle watchers unless other events are pending */
2127 idle_reify (EV_A); 3396 idle_reify (EV_A);
2128#endif 3397#endif
2129 3398
3399#if EV_CHECK_ENABLE
2130 /* queue check watchers, to be executed first */ 3400 /* queue check watchers, to be executed first */
2131 if (expect_false (checkcnt)) 3401 if (expect_false (checkcnt))
2132 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3402 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3403#endif
2133 3404
2134 call_pending (EV_A); 3405 EV_INVOKE_PENDING;
2135 } 3406 }
2136 while (expect_true ( 3407 while (expect_true (
2137 activecnt 3408 activecnt
2138 && !loop_done 3409 && !loop_done
2139 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3410 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2140 )); 3411 ));
2141 3412
2142 if (loop_done == EVUNLOOP_ONE) 3413 if (loop_done == EVBREAK_ONE)
2143 loop_done = EVUNLOOP_CANCEL; 3414 loop_done = EVBREAK_CANCEL;
3415
3416#if EV_FEATURE_API
3417 --loop_depth;
3418#endif
3419
3420 return activecnt;
2144} 3421}
2145 3422
2146void 3423void
2147ev_unloop (EV_P_ int how) 3424ev_break (EV_P_ int how) EV_THROW
2148{ 3425{
2149 loop_done = how; 3426 loop_done = how;
2150} 3427}
2151 3428
2152void 3429void
2153ev_ref (EV_P) 3430ev_ref (EV_P) EV_THROW
2154{ 3431{
2155 ++activecnt; 3432 ++activecnt;
2156} 3433}
2157 3434
2158void 3435void
2159ev_unref (EV_P) 3436ev_unref (EV_P) EV_THROW
2160{ 3437{
2161 --activecnt; 3438 --activecnt;
2162} 3439}
2163 3440
2164void 3441void
2165ev_now_update (EV_P) 3442ev_now_update (EV_P) EV_THROW
2166{ 3443{
2167 time_update (EV_A_ 1e100); 3444 time_update (EV_A_ 1e100);
2168} 3445}
2169 3446
2170void 3447void
2171ev_suspend (EV_P) 3448ev_suspend (EV_P) EV_THROW
2172{ 3449{
2173 ev_now_update (EV_A); 3450 ev_now_update (EV_A);
2174} 3451}
2175 3452
2176void 3453void
2177ev_resume (EV_P) 3454ev_resume (EV_P) EV_THROW
2178{ 3455{
2179 ev_tstamp mn_prev = mn_now; 3456 ev_tstamp mn_prev = mn_now;
2180 3457
2181 ev_now_update (EV_A); 3458 ev_now_update (EV_A);
2182 timers_reschedule (EV_A_ mn_now - mn_prev); 3459 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2199inline_size void 3476inline_size void
2200wlist_del (WL *head, WL elem) 3477wlist_del (WL *head, WL elem)
2201{ 3478{
2202 while (*head) 3479 while (*head)
2203 { 3480 {
2204 if (*head == elem) 3481 if (expect_true (*head == elem))
2205 { 3482 {
2206 *head = elem->next; 3483 *head = elem->next;
2207 return; 3484 break;
2208 } 3485 }
2209 3486
2210 head = &(*head)->next; 3487 head = &(*head)->next;
2211 } 3488 }
2212} 3489}
… …
2221 w->pending = 0; 3498 w->pending = 0;
2222 } 3499 }
2223} 3500}
2224 3501
2225int 3502int
2226ev_clear_pending (EV_P_ void *w) 3503ev_clear_pending (EV_P_ void *w) EV_THROW
2227{ 3504{
2228 W w_ = (W)w; 3505 W w_ = (W)w;
2229 int pending = w_->pending; 3506 int pending = w_->pending;
2230 3507
2231 if (expect_true (pending)) 3508 if (expect_true (pending))
… …
2240} 3517}
2241 3518
2242inline_size void 3519inline_size void
2243pri_adjust (EV_P_ W w) 3520pri_adjust (EV_P_ W w)
2244{ 3521{
2245 int pri = w->priority; 3522 int pri = ev_priority (w);
2246 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3523 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2247 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3524 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2248 w->priority = pri; 3525 ev_set_priority (w, pri);
2249} 3526}
2250 3527
2251inline_speed void 3528inline_speed void
2252ev_start (EV_P_ W w, int active) 3529ev_start (EV_P_ W w, int active)
2253{ 3530{
… …
2264} 3541}
2265 3542
2266/*****************************************************************************/ 3543/*****************************************************************************/
2267 3544
2268void noinline 3545void noinline
2269ev_io_start (EV_P_ ev_io *w) 3546ev_io_start (EV_P_ ev_io *w) EV_THROW
2270{ 3547{
2271 int fd = w->fd; 3548 int fd = w->fd;
2272 3549
2273 if (expect_false (ev_is_active (w))) 3550 if (expect_false (ev_is_active (w)))
2274 return; 3551 return;
2275 3552
2276 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3553 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2277 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3554 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2278 3555
2279 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2280 3557
2281 ev_start (EV_A_ (W)w, 1); 3558 ev_start (EV_A_ (W)w, 1);
2282 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3559 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2283 wlist_add (&anfds[fd].head, (WL)w); 3560 wlist_add (&anfds[fd].head, (WL)w);
2284 3561
3562 /* common bug, apparently */
3563 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3564
2285 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3565 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2286 w->events &= ~EV__IOFDSET; 3566 w->events &= ~EV__IOFDSET;
2287 3567
2288 EV_FREQUENT_CHECK; 3568 EV_FREQUENT_CHECK;
2289} 3569}
2290 3570
2291void noinline 3571void noinline
2292ev_io_stop (EV_P_ ev_io *w) 3572ev_io_stop (EV_P_ ev_io *w) EV_THROW
2293{ 3573{
2294 clear_pending (EV_A_ (W)w); 3574 clear_pending (EV_A_ (W)w);
2295 if (expect_false (!ev_is_active (w))) 3575 if (expect_false (!ev_is_active (w)))
2296 return; 3576 return;
2297 3577
… …
2300 EV_FREQUENT_CHECK; 3580 EV_FREQUENT_CHECK;
2301 3581
2302 wlist_del (&anfds[w->fd].head, (WL)w); 3582 wlist_del (&anfds[w->fd].head, (WL)w);
2303 ev_stop (EV_A_ (W)w); 3583 ev_stop (EV_A_ (W)w);
2304 3584
2305 fd_change (EV_A_ w->fd, 1); 3585 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2306 3586
2307 EV_FREQUENT_CHECK; 3587 EV_FREQUENT_CHECK;
2308} 3588}
2309 3589
2310void noinline 3590void noinline
2311ev_timer_start (EV_P_ ev_timer *w) 3591ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2312{ 3592{
2313 if (expect_false (ev_is_active (w))) 3593 if (expect_false (ev_is_active (w)))
2314 return; 3594 return;
2315 3595
2316 ev_at (w) += mn_now; 3596 ev_at (w) += mn_now;
… …
2330 3610
2331 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3611 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2332} 3612}
2333 3613
2334void noinline 3614void noinline
2335ev_timer_stop (EV_P_ ev_timer *w) 3615ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2336{ 3616{
2337 clear_pending (EV_A_ (W)w); 3617 clear_pending (EV_A_ (W)w);
2338 if (expect_false (!ev_is_active (w))) 3618 if (expect_false (!ev_is_active (w)))
2339 return; 3619 return;
2340 3620
… …
2352 timers [active] = timers [timercnt + HEAP0]; 3632 timers [active] = timers [timercnt + HEAP0];
2353 adjustheap (timers, timercnt, active); 3633 adjustheap (timers, timercnt, active);
2354 } 3634 }
2355 } 3635 }
2356 3636
2357 EV_FREQUENT_CHECK;
2358
2359 ev_at (w) -= mn_now; 3637 ev_at (w) -= mn_now;
2360 3638
2361 ev_stop (EV_A_ (W)w); 3639 ev_stop (EV_A_ (W)w);
3640
3641 EV_FREQUENT_CHECK;
2362} 3642}
2363 3643
2364void noinline 3644void noinline
2365ev_timer_again (EV_P_ ev_timer *w) 3645ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2366{ 3646{
2367 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
3648
3649 clear_pending (EV_A_ (W)w);
2368 3650
2369 if (ev_is_active (w)) 3651 if (ev_is_active (w))
2370 { 3652 {
2371 if (w->repeat) 3653 if (w->repeat)
2372 { 3654 {
… …
2384 } 3666 }
2385 3667
2386 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
2387} 3669}
2388 3670
3671ev_tstamp
3672ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3673{
3674 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3675}
3676
2389#if EV_PERIODIC_ENABLE 3677#if EV_PERIODIC_ENABLE
2390void noinline 3678void noinline
2391ev_periodic_start (EV_P_ ev_periodic *w) 3679ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2392{ 3680{
2393 if (expect_false (ev_is_active (w))) 3681 if (expect_false (ev_is_active (w)))
2394 return; 3682 return;
2395 3683
2396 if (w->reschedule_cb) 3684 if (w->reschedule_cb)
2397 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3685 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2398 else if (w->interval) 3686 else if (w->interval)
2399 { 3687 {
2400 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3688 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2401 /* this formula differs from the one in periodic_reify because we do not always round up */ 3689 periodic_recalc (EV_A_ w);
2402 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2403 } 3690 }
2404 else 3691 else
2405 ev_at (w) = w->offset; 3692 ev_at (w) = w->offset;
2406 3693
2407 EV_FREQUENT_CHECK; 3694 EV_FREQUENT_CHECK;
… …
2417 3704
2418 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3705 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2419} 3706}
2420 3707
2421void noinline 3708void noinline
2422ev_periodic_stop (EV_P_ ev_periodic *w) 3709ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2423{ 3710{
2424 clear_pending (EV_A_ (W)w); 3711 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w))) 3712 if (expect_false (!ev_is_active (w)))
2426 return; 3713 return;
2427 3714
… …
2439 periodics [active] = periodics [periodiccnt + HEAP0]; 3726 periodics [active] = periodics [periodiccnt + HEAP0];
2440 adjustheap (periodics, periodiccnt, active); 3727 adjustheap (periodics, periodiccnt, active);
2441 } 3728 }
2442 } 3729 }
2443 3730
2444 EV_FREQUENT_CHECK;
2445
2446 ev_stop (EV_A_ (W)w); 3731 ev_stop (EV_A_ (W)w);
3732
3733 EV_FREQUENT_CHECK;
2447} 3734}
2448 3735
2449void noinline 3736void noinline
2450ev_periodic_again (EV_P_ ev_periodic *w) 3737ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2451{ 3738{
2452 /* TODO: use adjustheap and recalculation */ 3739 /* TODO: use adjustheap and recalculation */
2453 ev_periodic_stop (EV_A_ w); 3740 ev_periodic_stop (EV_A_ w);
2454 ev_periodic_start (EV_A_ w); 3741 ev_periodic_start (EV_A_ w);
2455} 3742}
… …
2457 3744
2458#ifndef SA_RESTART 3745#ifndef SA_RESTART
2459# define SA_RESTART 0 3746# define SA_RESTART 0
2460#endif 3747#endif
2461 3748
3749#if EV_SIGNAL_ENABLE
3750
2462void noinline 3751void noinline
2463ev_signal_start (EV_P_ ev_signal *w) 3752ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2464{ 3753{
2465#if EV_MULTIPLICITY
2466 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2467#endif
2468 if (expect_false (ev_is_active (w))) 3754 if (expect_false (ev_is_active (w)))
2469 return; 3755 return;
2470 3756
2471 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3757 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2472 3758
2473 evpipe_init (EV_A); 3759#if EV_MULTIPLICITY
3760 assert (("libev: a signal must not be attached to two different loops",
3761 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2474 3762
2475 EV_FREQUENT_CHECK; 3763 signals [w->signum - 1].loop = EV_A;
3764 ECB_MEMORY_FENCE_RELEASE;
3765#endif
2476 3766
3767 EV_FREQUENT_CHECK;
3768
3769#if EV_USE_SIGNALFD
3770 if (sigfd == -2)
2477 { 3771 {
2478#ifndef _WIN32 3772 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2479 sigset_t full, prev; 3773 if (sigfd < 0 && errno == EINVAL)
2480 sigfillset (&full); 3774 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2481 sigprocmask (SIG_SETMASK, &full, &prev);
2482#endif
2483 3775
2484 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3776 if (sigfd >= 0)
3777 {
3778 fd_intern (sigfd); /* doing it twice will not hurt */
2485 3779
2486#ifndef _WIN32 3780 sigemptyset (&sigfd_set);
2487 sigprocmask (SIG_SETMASK, &prev, 0); 3781
2488#endif 3782 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3783 ev_set_priority (&sigfd_w, EV_MAXPRI);
3784 ev_io_start (EV_A_ &sigfd_w);
3785 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3786 }
2489 } 3787 }
3788
3789 if (sigfd >= 0)
3790 {
3791 /* TODO: check .head */
3792 sigaddset (&sigfd_set, w->signum);
3793 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3794
3795 signalfd (sigfd, &sigfd_set, 0);
3796 }
3797#endif
2490 3798
2491 ev_start (EV_A_ (W)w, 1); 3799 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&signals [w->signum - 1].head, (WL)w); 3800 wlist_add (&signals [w->signum - 1].head, (WL)w);
2493 3801
2494 if (!((WL)w)->next) 3802 if (!((WL)w)->next)
3803# if EV_USE_SIGNALFD
3804 if (sigfd < 0) /*TODO*/
3805# endif
2495 { 3806 {
2496#if _WIN32 3807# ifdef _WIN32
3808 evpipe_init (EV_A);
3809
2497 signal (w->signum, ev_sighandler); 3810 signal (w->signum, ev_sighandler);
2498#else 3811# else
2499 struct sigaction sa; 3812 struct sigaction sa;
3813
3814 evpipe_init (EV_A);
3815
2500 sa.sa_handler = ev_sighandler; 3816 sa.sa_handler = ev_sighandler;
2501 sigfillset (&sa.sa_mask); 3817 sigfillset (&sa.sa_mask);
2502 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3818 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2503 sigaction (w->signum, &sa, 0); 3819 sigaction (w->signum, &sa, 0);
3820
3821 if (origflags & EVFLAG_NOSIGMASK)
3822 {
3823 sigemptyset (&sa.sa_mask);
3824 sigaddset (&sa.sa_mask, w->signum);
3825 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3826 }
2504#endif 3827#endif
2505 } 3828 }
2506 3829
2507 EV_FREQUENT_CHECK; 3830 EV_FREQUENT_CHECK;
2508} 3831}
2509 3832
2510void noinline 3833void noinline
2511ev_signal_stop (EV_P_ ev_signal *w) 3834ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2512{ 3835{
2513 clear_pending (EV_A_ (W)w); 3836 clear_pending (EV_A_ (W)w);
2514 if (expect_false (!ev_is_active (w))) 3837 if (expect_false (!ev_is_active (w)))
2515 return; 3838 return;
2516 3839
… …
2518 3841
2519 wlist_del (&signals [w->signum - 1].head, (WL)w); 3842 wlist_del (&signals [w->signum - 1].head, (WL)w);
2520 ev_stop (EV_A_ (W)w); 3843 ev_stop (EV_A_ (W)w);
2521 3844
2522 if (!signals [w->signum - 1].head) 3845 if (!signals [w->signum - 1].head)
3846 {
3847#if EV_MULTIPLICITY
3848 signals [w->signum - 1].loop = 0; /* unattach from signal */
3849#endif
3850#if EV_USE_SIGNALFD
3851 if (sigfd >= 0)
3852 {
3853 sigset_t ss;
3854
3855 sigemptyset (&ss);
3856 sigaddset (&ss, w->signum);
3857 sigdelset (&sigfd_set, w->signum);
3858
3859 signalfd (sigfd, &sigfd_set, 0);
3860 sigprocmask (SIG_UNBLOCK, &ss, 0);
3861 }
3862 else
3863#endif
2523 signal (w->signum, SIG_DFL); 3864 signal (w->signum, SIG_DFL);
3865 }
2524 3866
2525 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2526} 3868}
3869
3870#endif
3871
3872#if EV_CHILD_ENABLE
2527 3873
2528void 3874void
2529ev_child_start (EV_P_ ev_child *w) 3875ev_child_start (EV_P_ ev_child *w) EV_THROW
2530{ 3876{
2531#if EV_MULTIPLICITY 3877#if EV_MULTIPLICITY
2532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3878 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2533#endif 3879#endif
2534 if (expect_false (ev_is_active (w))) 3880 if (expect_false (ev_is_active (w)))
2535 return; 3881 return;
2536 3882
2537 EV_FREQUENT_CHECK; 3883 EV_FREQUENT_CHECK;
2538 3884
2539 ev_start (EV_A_ (W)w, 1); 3885 ev_start (EV_A_ (W)w, 1);
2540 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3886 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2541 3887
2542 EV_FREQUENT_CHECK; 3888 EV_FREQUENT_CHECK;
2543} 3889}
2544 3890
2545void 3891void
2546ev_child_stop (EV_P_ ev_child *w) 3892ev_child_stop (EV_P_ ev_child *w) EV_THROW
2547{ 3893{
2548 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
2549 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
2550 return; 3896 return;
2551 3897
2552 EV_FREQUENT_CHECK; 3898 EV_FREQUENT_CHECK;
2553 3899
2554 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3900 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2555 ev_stop (EV_A_ (W)w); 3901 ev_stop (EV_A_ (W)w);
2556 3902
2557 EV_FREQUENT_CHECK; 3903 EV_FREQUENT_CHECK;
2558} 3904}
3905
3906#endif
2559 3907
2560#if EV_STAT_ENABLE 3908#if EV_STAT_ENABLE
2561 3909
2562# ifdef _WIN32 3910# ifdef _WIN32
2563# undef lstat 3911# undef lstat
… …
2569#define MIN_STAT_INTERVAL 0.1074891 3917#define MIN_STAT_INTERVAL 0.1074891
2570 3918
2571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3919static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2572 3920
2573#if EV_USE_INOTIFY 3921#if EV_USE_INOTIFY
2574# define EV_INOTIFY_BUFSIZE 8192 3922
3923/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3924# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2575 3925
2576static void noinline 3926static void noinline
2577infy_add (EV_P_ ev_stat *w) 3927infy_add (EV_P_ ev_stat *w)
2578{ 3928{
2579 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); 3929 w->wd = inotify_add_watch (fs_fd, w->path,
3930 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3931 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3932 | IN_DONT_FOLLOW | IN_MASK_ADD);
2580 3933
2581 if (w->wd < 0) 3934 if (w->wd >= 0)
3935 {
3936 struct statfs sfs;
3937
3938 /* now local changes will be tracked by inotify, but remote changes won't */
3939 /* unless the filesystem is known to be local, we therefore still poll */
3940 /* also do poll on <2.6.25, but with normal frequency */
3941
3942 if (!fs_2625)
3943 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3944 else if (!statfs (w->path, &sfs)
3945 && (sfs.f_type == 0x1373 /* devfs */
3946 || sfs.f_type == 0x4006 /* fat */
3947 || sfs.f_type == 0x4d44 /* msdos */
3948 || sfs.f_type == 0xEF53 /* ext2/3 */
3949 || sfs.f_type == 0x72b6 /* jffs2 */
3950 || sfs.f_type == 0x858458f6 /* ramfs */
3951 || sfs.f_type == 0x5346544e /* ntfs */
3952 || sfs.f_type == 0x3153464a /* jfs */
3953 || sfs.f_type == 0x9123683e /* btrfs */
3954 || sfs.f_type == 0x52654973 /* reiser3 */
3955 || sfs.f_type == 0x01021994 /* tmpfs */
3956 || sfs.f_type == 0x58465342 /* xfs */))
3957 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3958 else
3959 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2582 { 3960 }
3961 else
3962 {
3963 /* can't use inotify, continue to stat */
2583 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3964 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2584 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2585 3965
2586 /* monitor some parent directory for speedup hints */ 3966 /* if path is not there, monitor some parent directory for speedup hints */
2587 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3967 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2588 /* but an efficiency issue only */ 3968 /* but an efficiency issue only */
2589 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3969 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2590 { 3970 {
2591 char path [4096]; 3971 char path [4096];
… …
2601 if (!pend || pend == path) 3981 if (!pend || pend == path)
2602 break; 3982 break;
2603 3983
2604 *pend = 0; 3984 *pend = 0;
2605 w->wd = inotify_add_watch (fs_fd, path, mask); 3985 w->wd = inotify_add_watch (fs_fd, path, mask);
2606 } 3986 }
2607 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3987 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2608 } 3988 }
2609 } 3989 }
2610 3990
2611 if (w->wd >= 0) 3991 if (w->wd >= 0)
2612 {
2613 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3992 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2614 3993
2615 /* now local changes will be tracked by inotify, but remote changes won't */ 3994 /* now re-arm timer, if required */
2616 /* unless the filesystem it known to be local, we therefore still poll */ 3995 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2617 /* also do poll on <2.6.25, but with normal frequency */
2618 struct statfs sfs;
2619
2620 if (fs_2625 && !statfs (w->path, &sfs))
2621 if (sfs.f_type == 0x1373 /* devfs */
2622 || sfs.f_type == 0xEF53 /* ext2/3 */
2623 || sfs.f_type == 0x3153464a /* jfs */
2624 || sfs.f_type == 0x52654973 /* reiser3 */
2625 || sfs.f_type == 0x01021994 /* tempfs */
2626 || sfs.f_type == 0x58465342 /* xfs */)
2627 return;
2628
2629 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2630 ev_timer_again (EV_A_ &w->timer); 3996 ev_timer_again (EV_A_ &w->timer);
2631 } 3997 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2632} 3998}
2633 3999
2634static void noinline 4000static void noinline
2635infy_del (EV_P_ ev_stat *w) 4001infy_del (EV_P_ ev_stat *w)
2636{ 4002{
… …
2639 4005
2640 if (wd < 0) 4006 if (wd < 0)
2641 return; 4007 return;
2642 4008
2643 w->wd = -2; 4009 w->wd = -2;
2644 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4010 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2645 wlist_del (&fs_hash [slot].head, (WL)w); 4011 wlist_del (&fs_hash [slot].head, (WL)w);
2646 4012
2647 /* remove this watcher, if others are watching it, they will rearm */ 4013 /* remove this watcher, if others are watching it, they will rearm */
2648 inotify_rm_watch (fs_fd, wd); 4014 inotify_rm_watch (fs_fd, wd);
2649} 4015}
… …
2651static void noinline 4017static void noinline
2652infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4018infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2653{ 4019{
2654 if (slot < 0) 4020 if (slot < 0)
2655 /* overflow, need to check for all hash slots */ 4021 /* overflow, need to check for all hash slots */
2656 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4022 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2657 infy_wd (EV_A_ slot, wd, ev); 4023 infy_wd (EV_A_ slot, wd, ev);
2658 else 4024 else
2659 { 4025 {
2660 WL w_; 4026 WL w_;
2661 4027
2662 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4028 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2663 { 4029 {
2664 ev_stat *w = (ev_stat *)w_; 4030 ev_stat *w = (ev_stat *)w_;
2665 w_ = w_->next; /* lets us remove this watcher and all before it */ 4031 w_ = w_->next; /* lets us remove this watcher and all before it */
2666 4032
2667 if (w->wd == wd || wd == -1) 4033 if (w->wd == wd || wd == -1)
2668 { 4034 {
2669 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4035 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2670 { 4036 {
2671 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4037 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2672 w->wd = -1; 4038 w->wd = -1;
2673 infy_add (EV_A_ w); /* re-add, no matter what */ 4039 infy_add (EV_A_ w); /* re-add, no matter what */
2674 } 4040 }
2675 4041
2676 stat_timer_cb (EV_A_ &w->timer, 0); 4042 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2681 4047
2682static void 4048static void
2683infy_cb (EV_P_ ev_io *w, int revents) 4049infy_cb (EV_P_ ev_io *w, int revents)
2684{ 4050{
2685 char buf [EV_INOTIFY_BUFSIZE]; 4051 char buf [EV_INOTIFY_BUFSIZE];
2686 struct inotify_event *ev = (struct inotify_event *)buf;
2687 int ofs; 4052 int ofs;
2688 int len = read (fs_fd, buf, sizeof (buf)); 4053 int len = read (fs_fd, buf, sizeof (buf));
2689 4054
2690 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4055 for (ofs = 0; ofs < len; )
4056 {
4057 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2691 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4058 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4059 ofs += sizeof (struct inotify_event) + ev->len;
4060 }
2692} 4061}
2693 4062
2694inline_size void 4063inline_size void ecb_cold
2695check_2625 (EV_P) 4064ev_check_2625 (EV_P)
2696{ 4065{
2697 /* kernels < 2.6.25 are borked 4066 /* kernels < 2.6.25 are borked
2698 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4067 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2699 */ 4068 */
2700 struct utsname buf; 4069 if (ev_linux_version () < 0x020619)
2701 int major, minor, micro;
2702
2703 if (uname (&buf))
2704 return; 4070 return;
2705 4071
2706 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2707 return;
2708
2709 if (major < 2
2710 || (major == 2 && minor < 6)
2711 || (major == 2 && minor == 6 && micro < 25))
2712 return;
2713
2714 fs_2625 = 1; 4072 fs_2625 = 1;
4073}
4074
4075inline_size int
4076infy_newfd (void)
4077{
4078#if defined IN_CLOEXEC && defined IN_NONBLOCK
4079 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4080 if (fd >= 0)
4081 return fd;
4082#endif
4083 return inotify_init ();
2715} 4084}
2716 4085
2717inline_size void 4086inline_size void
2718infy_init (EV_P) 4087infy_init (EV_P)
2719{ 4088{
2720 if (fs_fd != -2) 4089 if (fs_fd != -2)
2721 return; 4090 return;
2722 4091
2723 fs_fd = -1; 4092 fs_fd = -1;
2724 4093
2725 check_2625 (EV_A); 4094 ev_check_2625 (EV_A);
2726 4095
2727 fs_fd = inotify_init (); 4096 fs_fd = infy_newfd ();
2728 4097
2729 if (fs_fd >= 0) 4098 if (fs_fd >= 0)
2730 { 4099 {
4100 fd_intern (fs_fd);
2731 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4101 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2732 ev_set_priority (&fs_w, EV_MAXPRI); 4102 ev_set_priority (&fs_w, EV_MAXPRI);
2733 ev_io_start (EV_A_ &fs_w); 4103 ev_io_start (EV_A_ &fs_w);
4104 ev_unref (EV_A);
2734 } 4105 }
2735} 4106}
2736 4107
2737inline_size void 4108inline_size void
2738infy_fork (EV_P) 4109infy_fork (EV_P)
… …
2740 int slot; 4111 int slot;
2741 4112
2742 if (fs_fd < 0) 4113 if (fs_fd < 0)
2743 return; 4114 return;
2744 4115
4116 ev_ref (EV_A);
4117 ev_io_stop (EV_A_ &fs_w);
2745 close (fs_fd); 4118 close (fs_fd);
2746 fs_fd = inotify_init (); 4119 fs_fd = infy_newfd ();
2747 4120
4121 if (fs_fd >= 0)
4122 {
4123 fd_intern (fs_fd);
4124 ev_io_set (&fs_w, fs_fd, EV_READ);
4125 ev_io_start (EV_A_ &fs_w);
4126 ev_unref (EV_A);
4127 }
4128
2748 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4129 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2749 { 4130 {
2750 WL w_ = fs_hash [slot].head; 4131 WL w_ = fs_hash [slot].head;
2751 fs_hash [slot].head = 0; 4132 fs_hash [slot].head = 0;
2752 4133
2753 while (w_) 4134 while (w_)
… …
2758 w->wd = -1; 4139 w->wd = -1;
2759 4140
2760 if (fs_fd >= 0) 4141 if (fs_fd >= 0)
2761 infy_add (EV_A_ w); /* re-add, no matter what */ 4142 infy_add (EV_A_ w); /* re-add, no matter what */
2762 else 4143 else
4144 {
4145 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4146 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2763 ev_timer_again (EV_A_ &w->timer); 4147 ev_timer_again (EV_A_ &w->timer);
4148 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4149 }
2764 } 4150 }
2765 } 4151 }
2766} 4152}
2767 4153
2768#endif 4154#endif
… …
2772#else 4158#else
2773# define EV_LSTAT(p,b) lstat (p, b) 4159# define EV_LSTAT(p,b) lstat (p, b)
2774#endif 4160#endif
2775 4161
2776void 4162void
2777ev_stat_stat (EV_P_ ev_stat *w) 4163ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2778{ 4164{
2779 if (lstat (w->path, &w->attr) < 0) 4165 if (lstat (w->path, &w->attr) < 0)
2780 w->attr.st_nlink = 0; 4166 w->attr.st_nlink = 0;
2781 else if (!w->attr.st_nlink) 4167 else if (!w->attr.st_nlink)
2782 w->attr.st_nlink = 1; 4168 w->attr.st_nlink = 1;
… …
2785static void noinline 4171static void noinline
2786stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4172stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2787{ 4173{
2788 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4174 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2789 4175
2790 /* we copy this here each the time so that */ 4176 ev_statdata prev = w->attr;
2791 /* prev has the old value when the callback gets invoked */
2792 w->prev = w->attr;
2793 ev_stat_stat (EV_A_ w); 4177 ev_stat_stat (EV_A_ w);
2794 4178
2795 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4179 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2796 if ( 4180 if (
2797 w->prev.st_dev != w->attr.st_dev 4181 prev.st_dev != w->attr.st_dev
2798 || w->prev.st_ino != w->attr.st_ino 4182 || prev.st_ino != w->attr.st_ino
2799 || w->prev.st_mode != w->attr.st_mode 4183 || prev.st_mode != w->attr.st_mode
2800 || w->prev.st_nlink != w->attr.st_nlink 4184 || prev.st_nlink != w->attr.st_nlink
2801 || w->prev.st_uid != w->attr.st_uid 4185 || prev.st_uid != w->attr.st_uid
2802 || w->prev.st_gid != w->attr.st_gid 4186 || prev.st_gid != w->attr.st_gid
2803 || w->prev.st_rdev != w->attr.st_rdev 4187 || prev.st_rdev != w->attr.st_rdev
2804 || w->prev.st_size != w->attr.st_size 4188 || prev.st_size != w->attr.st_size
2805 || w->prev.st_atime != w->attr.st_atime 4189 || prev.st_atime != w->attr.st_atime
2806 || w->prev.st_mtime != w->attr.st_mtime 4190 || prev.st_mtime != w->attr.st_mtime
2807 || w->prev.st_ctime != w->attr.st_ctime 4191 || prev.st_ctime != w->attr.st_ctime
2808 ) { 4192 ) {
4193 /* we only update w->prev on actual differences */
4194 /* in case we test more often than invoke the callback, */
4195 /* to ensure that prev is always different to attr */
4196 w->prev = prev;
4197
2809 #if EV_USE_INOTIFY 4198 #if EV_USE_INOTIFY
2810 if (fs_fd >= 0) 4199 if (fs_fd >= 0)
2811 { 4200 {
2812 infy_del (EV_A_ w); 4201 infy_del (EV_A_ w);
2813 infy_add (EV_A_ w); 4202 infy_add (EV_A_ w);
… …
2818 ev_feed_event (EV_A_ w, EV_STAT); 4207 ev_feed_event (EV_A_ w, EV_STAT);
2819 } 4208 }
2820} 4209}
2821 4210
2822void 4211void
2823ev_stat_start (EV_P_ ev_stat *w) 4212ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2824{ 4213{
2825 if (expect_false (ev_is_active (w))) 4214 if (expect_false (ev_is_active (w)))
2826 return; 4215 return;
2827 4216
2828 ev_stat_stat (EV_A_ w); 4217 ev_stat_stat (EV_A_ w);
… …
2838 4227
2839 if (fs_fd >= 0) 4228 if (fs_fd >= 0)
2840 infy_add (EV_A_ w); 4229 infy_add (EV_A_ w);
2841 else 4230 else
2842#endif 4231#endif
4232 {
2843 ev_timer_again (EV_A_ &w->timer); 4233 ev_timer_again (EV_A_ &w->timer);
4234 ev_unref (EV_A);
4235 }
2844 4236
2845 ev_start (EV_A_ (W)w, 1); 4237 ev_start (EV_A_ (W)w, 1);
2846 4238
2847 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
2848} 4240}
2849 4241
2850void 4242void
2851ev_stat_stop (EV_P_ ev_stat *w) 4243ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2852{ 4244{
2853 clear_pending (EV_A_ (W)w); 4245 clear_pending (EV_A_ (W)w);
2854 if (expect_false (!ev_is_active (w))) 4246 if (expect_false (!ev_is_active (w)))
2855 return; 4247 return;
2856 4248
2857 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
2858 4250
2859#if EV_USE_INOTIFY 4251#if EV_USE_INOTIFY
2860 infy_del (EV_A_ w); 4252 infy_del (EV_A_ w);
2861#endif 4253#endif
4254
4255 if (ev_is_active (&w->timer))
4256 {
4257 ev_ref (EV_A);
2862 ev_timer_stop (EV_A_ &w->timer); 4258 ev_timer_stop (EV_A_ &w->timer);
4259 }
2863 4260
2864 ev_stop (EV_A_ (W)w); 4261 ev_stop (EV_A_ (W)w);
2865 4262
2866 EV_FREQUENT_CHECK; 4263 EV_FREQUENT_CHECK;
2867} 4264}
2868#endif 4265#endif
2869 4266
2870#if EV_IDLE_ENABLE 4267#if EV_IDLE_ENABLE
2871void 4268void
2872ev_idle_start (EV_P_ ev_idle *w) 4269ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2873{ 4270{
2874 if (expect_false (ev_is_active (w))) 4271 if (expect_false (ev_is_active (w)))
2875 return; 4272 return;
2876 4273
2877 pri_adjust (EV_A_ (W)w); 4274 pri_adjust (EV_A_ (W)w);
… …
2890 4287
2891 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
2892} 4289}
2893 4290
2894void 4291void
2895ev_idle_stop (EV_P_ ev_idle *w) 4292ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2896{ 4293{
2897 clear_pending (EV_A_ (W)w); 4294 clear_pending (EV_A_ (W)w);
2898 if (expect_false (!ev_is_active (w))) 4295 if (expect_false (!ev_is_active (w)))
2899 return; 4296 return;
2900 4297
… …
2912 4309
2913 EV_FREQUENT_CHECK; 4310 EV_FREQUENT_CHECK;
2914} 4311}
2915#endif 4312#endif
2916 4313
4314#if EV_PREPARE_ENABLE
2917void 4315void
2918ev_prepare_start (EV_P_ ev_prepare *w) 4316ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2919{ 4317{
2920 if (expect_false (ev_is_active (w))) 4318 if (expect_false (ev_is_active (w)))
2921 return; 4319 return;
2922 4320
2923 EV_FREQUENT_CHECK; 4321 EV_FREQUENT_CHECK;
… …
2928 4326
2929 EV_FREQUENT_CHECK; 4327 EV_FREQUENT_CHECK;
2930} 4328}
2931 4329
2932void 4330void
2933ev_prepare_stop (EV_P_ ev_prepare *w) 4331ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2934{ 4332{
2935 clear_pending (EV_A_ (W)w); 4333 clear_pending (EV_A_ (W)w);
2936 if (expect_false (!ev_is_active (w))) 4334 if (expect_false (!ev_is_active (w)))
2937 return; 4335 return;
2938 4336
… …
2947 4345
2948 ev_stop (EV_A_ (W)w); 4346 ev_stop (EV_A_ (W)w);
2949 4347
2950 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
2951} 4349}
4350#endif
2952 4351
4352#if EV_CHECK_ENABLE
2953void 4353void
2954ev_check_start (EV_P_ ev_check *w) 4354ev_check_start (EV_P_ ev_check *w) EV_THROW
2955{ 4355{
2956 if (expect_false (ev_is_active (w))) 4356 if (expect_false (ev_is_active (w)))
2957 return; 4357 return;
2958 4358
2959 EV_FREQUENT_CHECK; 4359 EV_FREQUENT_CHECK;
… …
2964 4364
2965 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
2966} 4366}
2967 4367
2968void 4368void
2969ev_check_stop (EV_P_ ev_check *w) 4369ev_check_stop (EV_P_ ev_check *w) EV_THROW
2970{ 4370{
2971 clear_pending (EV_A_ (W)w); 4371 clear_pending (EV_A_ (W)w);
2972 if (expect_false (!ev_is_active (w))) 4372 if (expect_false (!ev_is_active (w)))
2973 return; 4373 return;
2974 4374
… …
2983 4383
2984 ev_stop (EV_A_ (W)w); 4384 ev_stop (EV_A_ (W)w);
2985 4385
2986 EV_FREQUENT_CHECK; 4386 EV_FREQUENT_CHECK;
2987} 4387}
4388#endif
2988 4389
2989#if EV_EMBED_ENABLE 4390#if EV_EMBED_ENABLE
2990void noinline 4391void noinline
2991ev_embed_sweep (EV_P_ ev_embed *w) 4392ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2992{ 4393{
2993 ev_loop (w->other, EVLOOP_NONBLOCK); 4394 ev_run (w->other, EVRUN_NOWAIT);
2994} 4395}
2995 4396
2996static void 4397static void
2997embed_io_cb (EV_P_ ev_io *io, int revents) 4398embed_io_cb (EV_P_ ev_io *io, int revents)
2998{ 4399{
2999 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4400 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3000 4401
3001 if (ev_cb (w)) 4402 if (ev_cb (w))
3002 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4403 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3003 else 4404 else
3004 ev_loop (w->other, EVLOOP_NONBLOCK); 4405 ev_run (w->other, EVRUN_NOWAIT);
3005} 4406}
3006 4407
3007static void 4408static void
3008embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4409embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3009{ 4410{
3010 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4411 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3011 4412
3012 { 4413 {
3013 struct ev_loop *loop = w->other; 4414 EV_P = w->other;
3014 4415
3015 while (fdchangecnt) 4416 while (fdchangecnt)
3016 { 4417 {
3017 fd_reify (EV_A); 4418 fd_reify (EV_A);
3018 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4419 ev_run (EV_A_ EVRUN_NOWAIT);
3019 } 4420 }
3020 } 4421 }
3021} 4422}
3022 4423
3023static void 4424static void
… …
3026 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4427 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3027 4428
3028 ev_embed_stop (EV_A_ w); 4429 ev_embed_stop (EV_A_ w);
3029 4430
3030 { 4431 {
3031 struct ev_loop *loop = w->other; 4432 EV_P = w->other;
3032 4433
3033 ev_loop_fork (EV_A); 4434 ev_loop_fork (EV_A);
3034 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4435 ev_run (EV_A_ EVRUN_NOWAIT);
3035 } 4436 }
3036 4437
3037 ev_embed_start (EV_A_ w); 4438 ev_embed_start (EV_A_ w);
3038} 4439}
3039 4440
… …
3044 ev_idle_stop (EV_A_ idle); 4445 ev_idle_stop (EV_A_ idle);
3045} 4446}
3046#endif 4447#endif
3047 4448
3048void 4449void
3049ev_embed_start (EV_P_ ev_embed *w) 4450ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3050{ 4451{
3051 if (expect_false (ev_is_active (w))) 4452 if (expect_false (ev_is_active (w)))
3052 return; 4453 return;
3053 4454
3054 { 4455 {
3055 struct ev_loop *loop = w->other; 4456 EV_P = w->other;
3056 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4457 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3057 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4458 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3058 } 4459 }
3059 4460
3060 EV_FREQUENT_CHECK; 4461 EV_FREQUENT_CHECK;
… …
3075 4476
3076 EV_FREQUENT_CHECK; 4477 EV_FREQUENT_CHECK;
3077} 4478}
3078 4479
3079void 4480void
3080ev_embed_stop (EV_P_ ev_embed *w) 4481ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3081{ 4482{
3082 clear_pending (EV_A_ (W)w); 4483 clear_pending (EV_A_ (W)w);
3083 if (expect_false (!ev_is_active (w))) 4484 if (expect_false (!ev_is_active (w)))
3084 return; 4485 return;
3085 4486
… …
3087 4488
3088 ev_io_stop (EV_A_ &w->io); 4489 ev_io_stop (EV_A_ &w->io);
3089 ev_prepare_stop (EV_A_ &w->prepare); 4490 ev_prepare_stop (EV_A_ &w->prepare);
3090 ev_fork_stop (EV_A_ &w->fork); 4491 ev_fork_stop (EV_A_ &w->fork);
3091 4492
4493 ev_stop (EV_A_ (W)w);
4494
3092 EV_FREQUENT_CHECK; 4495 EV_FREQUENT_CHECK;
3093} 4496}
3094#endif 4497#endif
3095 4498
3096#if EV_FORK_ENABLE 4499#if EV_FORK_ENABLE
3097void 4500void
3098ev_fork_start (EV_P_ ev_fork *w) 4501ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3099{ 4502{
3100 if (expect_false (ev_is_active (w))) 4503 if (expect_false (ev_is_active (w)))
3101 return; 4504 return;
3102 4505
3103 EV_FREQUENT_CHECK; 4506 EV_FREQUENT_CHECK;
… …
3108 4511
3109 EV_FREQUENT_CHECK; 4512 EV_FREQUENT_CHECK;
3110} 4513}
3111 4514
3112void 4515void
3113ev_fork_stop (EV_P_ ev_fork *w) 4516ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3114{ 4517{
3115 clear_pending (EV_A_ (W)w); 4518 clear_pending (EV_A_ (W)w);
3116 if (expect_false (!ev_is_active (w))) 4519 if (expect_false (!ev_is_active (w)))
3117 return; 4520 return;
3118 4521
… …
3129 4532
3130 EV_FREQUENT_CHECK; 4533 EV_FREQUENT_CHECK;
3131} 4534}
3132#endif 4535#endif
3133 4536
4537#if EV_CLEANUP_ENABLE
4538void
4539ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4540{
4541 if (expect_false (ev_is_active (w)))
4542 return;
4543
4544 EV_FREQUENT_CHECK;
4545
4546 ev_start (EV_A_ (W)w, ++cleanupcnt);
4547 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4548 cleanups [cleanupcnt - 1] = w;
4549
4550 /* cleanup watchers should never keep a refcount on the loop */
4551 ev_unref (EV_A);
4552 EV_FREQUENT_CHECK;
4553}
4554
4555void
4556ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4557{
4558 clear_pending (EV_A_ (W)w);
4559 if (expect_false (!ev_is_active (w)))
4560 return;
4561
4562 EV_FREQUENT_CHECK;
4563 ev_ref (EV_A);
4564
4565 {
4566 int active = ev_active (w);
4567
4568 cleanups [active - 1] = cleanups [--cleanupcnt];
4569 ev_active (cleanups [active - 1]) = active;
4570 }
4571
4572 ev_stop (EV_A_ (W)w);
4573
4574 EV_FREQUENT_CHECK;
4575}
4576#endif
4577
3134#if EV_ASYNC_ENABLE 4578#if EV_ASYNC_ENABLE
3135void 4579void
3136ev_async_start (EV_P_ ev_async *w) 4580ev_async_start (EV_P_ ev_async *w) EV_THROW
3137{ 4581{
3138 if (expect_false (ev_is_active (w))) 4582 if (expect_false (ev_is_active (w)))
3139 return; 4583 return;
4584
4585 w->sent = 0;
3140 4586
3141 evpipe_init (EV_A); 4587 evpipe_init (EV_A);
3142 4588
3143 EV_FREQUENT_CHECK; 4589 EV_FREQUENT_CHECK;
3144 4590
… …
3148 4594
3149 EV_FREQUENT_CHECK; 4595 EV_FREQUENT_CHECK;
3150} 4596}
3151 4597
3152void 4598void
3153ev_async_stop (EV_P_ ev_async *w) 4599ev_async_stop (EV_P_ ev_async *w) EV_THROW
3154{ 4600{
3155 clear_pending (EV_A_ (W)w); 4601 clear_pending (EV_A_ (W)w);
3156 if (expect_false (!ev_is_active (w))) 4602 if (expect_false (!ev_is_active (w)))
3157 return; 4603 return;
3158 4604
… …
3169 4615
3170 EV_FREQUENT_CHECK; 4616 EV_FREQUENT_CHECK;
3171} 4617}
3172 4618
3173void 4619void
3174ev_async_send (EV_P_ ev_async *w) 4620ev_async_send (EV_P_ ev_async *w) EV_THROW
3175{ 4621{
3176 w->sent = 1; 4622 w->sent = 1;
3177 evpipe_write (EV_A_ &gotasync); 4623 evpipe_write (EV_A_ &async_pending);
3178} 4624}
3179#endif 4625#endif
3180 4626
3181/*****************************************************************************/ 4627/*****************************************************************************/
3182 4628
… …
3216 4662
3217 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4663 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3218} 4664}
3219 4665
3220void 4666void
3221ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4667ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3222{ 4668{
3223 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4669 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3224 4670
3225 if (expect_false (!once)) 4671 if (expect_false (!once))
3226 { 4672 {
3227 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4673 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3228 return; 4674 return;
3229 } 4675 }
3230 4676
3231 once->cb = cb; 4677 once->cb = cb;
3232 once->arg = arg; 4678 once->arg = arg;
… …
3247} 4693}
3248 4694
3249/*****************************************************************************/ 4695/*****************************************************************************/
3250 4696
3251#if EV_WALK_ENABLE 4697#if EV_WALK_ENABLE
3252void 4698void ecb_cold
3253ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4699ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3254{ 4700{
3255 int i, j; 4701 int i, j;
3256 ev_watcher_list *wl, *wn; 4702 ev_watcher_list *wl, *wn;
3257 4703
3258 if (types & (EV_IO | EV_EMBED)) 4704 if (types & (EV_IO | EV_EMBED))
… …
3301 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4747 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3302#endif 4748#endif
3303 4749
3304#if EV_IDLE_ENABLE 4750#if EV_IDLE_ENABLE
3305 if (types & EV_IDLE) 4751 if (types & EV_IDLE)
3306 for (j = NUMPRI; i--; ) 4752 for (j = NUMPRI; j--; )
3307 for (i = idlecnt [j]; i--; ) 4753 for (i = idlecnt [j]; i--; )
3308 cb (EV_A_ EV_IDLE, idles [j][i]); 4754 cb (EV_A_ EV_IDLE, idles [j][i]);
3309#endif 4755#endif
3310 4756
3311#if EV_FORK_ENABLE 4757#if EV_FORK_ENABLE
… …
3319 if (types & EV_ASYNC) 4765 if (types & EV_ASYNC)
3320 for (i = asynccnt; i--; ) 4766 for (i = asynccnt; i--; )
3321 cb (EV_A_ EV_ASYNC, asyncs [i]); 4767 cb (EV_A_ EV_ASYNC, asyncs [i]);
3322#endif 4768#endif
3323 4769
4770#if EV_PREPARE_ENABLE
3324 if (types & EV_PREPARE) 4771 if (types & EV_PREPARE)
3325 for (i = preparecnt; i--; ) 4772 for (i = preparecnt; i--; )
3326#if EV_EMBED_ENABLE 4773# if EV_EMBED_ENABLE
3327 if (ev_cb (prepares [i]) != embed_prepare_cb) 4774 if (ev_cb (prepares [i]) != embed_prepare_cb)
3328#endif 4775# endif
3329 cb (EV_A_ EV_PREPARE, prepares [i]); 4776 cb (EV_A_ EV_PREPARE, prepares [i]);
4777#endif
3330 4778
4779#if EV_CHECK_ENABLE
3331 if (types & EV_CHECK) 4780 if (types & EV_CHECK)
3332 for (i = checkcnt; i--; ) 4781 for (i = checkcnt; i--; )
3333 cb (EV_A_ EV_CHECK, checks [i]); 4782 cb (EV_A_ EV_CHECK, checks [i]);
4783#endif
3334 4784
4785#if EV_SIGNAL_ENABLE
3335 if (types & EV_SIGNAL) 4786 if (types & EV_SIGNAL)
3336 for (i = 0; i < signalmax; ++i) 4787 for (i = 0; i < EV_NSIG - 1; ++i)
3337 for (wl = signals [i].head; wl; ) 4788 for (wl = signals [i].head; wl; )
3338 { 4789 {
3339 wn = wl->next; 4790 wn = wl->next;
3340 cb (EV_A_ EV_SIGNAL, wl); 4791 cb (EV_A_ EV_SIGNAL, wl);
3341 wl = wn; 4792 wl = wn;
3342 } 4793 }
4794#endif
3343 4795
4796#if EV_CHILD_ENABLE
3344 if (types & EV_CHILD) 4797 if (types & EV_CHILD)
3345 for (i = EV_PID_HASHSIZE; i--; ) 4798 for (i = (EV_PID_HASHSIZE); i--; )
3346 for (wl = childs [i]; wl; ) 4799 for (wl = childs [i]; wl; )
3347 { 4800 {
3348 wn = wl->next; 4801 wn = wl->next;
3349 cb (EV_A_ EV_CHILD, wl); 4802 cb (EV_A_ EV_CHILD, wl);
3350 wl = wn; 4803 wl = wn;
3351 } 4804 }
4805#endif
3352/* EV_STAT 0x00001000 /* stat data changed */ 4806/* EV_STAT 0x00001000 /* stat data changed */
3353/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4807/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3354} 4808}
3355#endif 4809#endif
3356 4810
3357#if EV_MULTIPLICITY 4811#if EV_MULTIPLICITY
3358 #include "ev_wrap.h" 4812 #include "ev_wrap.h"
3359#endif 4813#endif
3360 4814
3361#ifdef __cplusplus
3362}
3363#endif
3364

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