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Comparing libev/ev.c (file contents):
Revision 1.287 by root, Mon Apr 20 19:45:58 2009 UTC vs.
Revision 1.411 by root, Tue Feb 21 04:34:02 2012 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 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
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# 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
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
123# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
126# endif 136# endif
127 137
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
134# endif 145# endif
135 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# 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
142# endif 163# endif
143 164
144#endif 165#endif
145 166
146#include <math.h>
147#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
148#include <fcntl.h> 169#include <fcntl.h>
149#include <stddef.h> 170#include <stddef.h>
150 171
151#include <stdio.h> 172#include <stdio.h>
152 173
153#include <assert.h> 174#include <assert.h>
154#include <errno.h> 175#include <errno.h>
155#include <sys/types.h> 176#include <sys/types.h>
156#include <time.h> 177#include <time.h>
178#include <limits.h>
157 179
158#include <signal.h> 180#include <signal.h>
159 181
160#ifdef EV_H 182#ifdef EV_H
161# include EV_H 183# include EV_H
162#else 184#else
163# 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
164#endif 197#endif
165 198
166#ifndef _WIN32 199#ifndef _WIN32
167# include <sys/time.h> 200# include <sys/time.h>
168# include <sys/wait.h> 201# include <sys/wait.h>
… …
172# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 206# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
176# endif 209# endif
210# undef EV_AVOID_STDIO
177#endif 211#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
178 220
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
222
223/* try to deduce the maximum number of signals on this platform */
224#if defined (EV_NSIG)
225/* use what's provided */
226#elif defined (NSIG)
227# define EV_NSIG (NSIG)
228#elif defined(_NSIG)
229# define EV_NSIG (_NSIG)
230#elif defined (SIGMAX)
231# define EV_NSIG (SIGMAX+1)
232#elif defined (SIG_MAX)
233# define EV_NSIG (SIG_MAX+1)
234#elif defined (_SIG_MAX)
235# define EV_NSIG (_SIG_MAX+1)
236#elif defined (MAXSIG)
237# define EV_NSIG (MAXSIG+1)
238#elif defined (MAX_SIG)
239# define EV_NSIG (MAX_SIG+1)
240#elif defined (SIGARRAYSIZE)
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined (_sys_nsig)
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else
245# error "unable to find value for NSIG, please report"
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
180 254
181#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 258# else
185# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
186# endif 260# endif
187#endif 261#endif
188 262
189#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 266# else
193# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
194# endif 268# endif
195#endif 269#endif
196 270
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 273#endif
200 274
201#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 278# else
205# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
206# endif 280# endif
207#endif 281#endif
208 282
209#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 285#endif
212 286
213#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
214# ifdef _WIN32 288# ifdef _WIN32
215# define EV_USE_POLL 0 289# define EV_USE_POLL 0
216# else 290# else
217# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 292# endif
219#endif 293#endif
220 294
221#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 298# else
225# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
226# endif 300# endif
227#endif 301#endif
228 302
… …
234# define EV_USE_PORT 0 308# define EV_USE_PORT 0
235#endif 309#endif
236 310
237#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 314# else
241# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
242# endif 316# endif
243#endif 317#endif
244 318
245#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 321#endif
252 322
253#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 325#endif
260 326
261#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 330# else
265# define EV_USE_EVENTFD 0 331# define EV_USE_EVENTFD 0
332# endif
333#endif
334
335#ifndef EV_USE_SIGNALFD
336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
337# define EV_USE_SIGNALFD EV_FEATURE_OS
338# else
339# define EV_USE_SIGNALFD 0
266# endif 340# endif
267#endif 341#endif
268 342
269#if 0 /* debugging */ 343#if 0 /* debugging */
270# define EV_VERIFY 3 344# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
273#endif 347#endif
274 348
275#ifndef EV_VERIFY 349#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 351#endif
278 352
279#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 355#endif
282 356
283#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif
360
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h>
365# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1
369# else
370# undef EV_USE_CLOCK_SYSCALL
371# define EV_USE_CLOCK_SYSCALL 0
372# endif
285#endif 373#endif
286 374
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 375/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
288 382
289#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
292#endif 386#endif
… …
300# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
302#endif 396#endif
303 397
304#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux)
306# include <sys/select.h> 401# include <sys/select.h>
307# endif 402# endif
308#endif 403#endif
309 404
310#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 406# include <sys/statfs.h>
313# include <sys/inotify.h> 407# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
320 414
321#if EV_SELECT_IS_WINSOCKET 415#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 416# include <winsock.h>
323#endif 417#endif
324 418
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 419#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 421# include <stdint.h>
337# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
338extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
339# endif 424# endif
340int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 426# ifdef O_CLOEXEC
342} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
343# endif 431# endif
432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
433#endif
434
435#if EV_USE_SIGNALFD
436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
437# include <stdint.h>
438# ifndef SFD_NONBLOCK
439# define SFD_NONBLOCK O_NONBLOCK
440# endif
441# ifndef SFD_CLOEXEC
442# ifdef O_CLOEXEC
443# define SFD_CLOEXEC O_CLOEXEC
444# else
445# define SFD_CLOEXEC 02000000
446# endif
447# endif
448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
449
450struct signalfd_siginfo
451{
452 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)];
454};
344#endif 455#endif
345 456
346/**/ 457/**/
347 458
348#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 461#else
351# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
352#endif 463#endif
353 464
354/* 465/*
355 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 468 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 471
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 519 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
371#else 526#else
372# define expect(expr,value) (expr) 527 #include <inttypes.h>
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
377#endif 542 #endif
543#endif
378 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
571 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
574 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined(__s390__) || defined(__s390x__)
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #endif
583 #endif
584#endif
585
586#ifndef ECB_MEMORY_FENCE
587 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
588 #define ECB_MEMORY_FENCE __sync_synchronize ()
589 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
590 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
591 #elif _MSC_VER >= 1400 /* VC++ 2005 */
592 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
593 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
594 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
595 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
596 #elif defined(_WIN32)
597 #include <WinNT.h>
598 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
599 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #include <mbarrier.h>
601 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
602 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
603 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
604 #endif
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if !ECB_AVOID_PTHREADS
609 /*
610 * if you get undefined symbol references to pthread_mutex_lock,
611 * or failure to find pthread.h, then you should implement
612 * the ECB_MEMORY_FENCE operations for your cpu/compiler
613 * OR provide pthread.h and link against the posix thread library
614 * of your system.
615 */
616 #include <pthread.h>
617 #define ECB_NEEDS_PTHREADS 1
618 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
619
620 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
621 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
622 #endif
623#endif
624
625#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
626 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
627#endif
628
629#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
630 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
631#endif
632
633/*****************************************************************************/
634
635#define ECB_C99 (__STDC_VERSION__ >= 199901L)
636
637#if __cplusplus
638 #define ecb_inline static inline
639#elif ECB_GCC_VERSION(2,5)
640 #define ecb_inline static __inline__
641#elif ECB_C99
642 #define ecb_inline static inline
643#else
644 #define ecb_inline static
645#endif
646
647#if ECB_GCC_VERSION(3,3)
648 #define ecb_restrict __restrict__
649#elif ECB_C99
650 #define ecb_restrict restrict
651#else
652 #define ecb_restrict
653#endif
654
655typedef int ecb_bool;
656
657#define ECB_CONCAT_(a, b) a ## b
658#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
659#define ECB_STRINGIFY_(a) # a
660#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
661
662#define ecb_function_ ecb_inline
663
664#if ECB_GCC_VERSION(3,1)
665 #define ecb_attribute(attrlist) __attribute__(attrlist)
666 #define ecb_is_constant(expr) __builtin_constant_p (expr)
667 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
668 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
669#else
670 #define ecb_attribute(attrlist)
671 #define ecb_is_constant(expr) 0
672 #define ecb_expect(expr,value) (expr)
673 #define ecb_prefetch(addr,rw,locality)
674#endif
675
676/* no emulation for ecb_decltype */
677#if ECB_GCC_VERSION(4,5)
678 #define ecb_decltype(x) __decltype(x)
679#elif ECB_GCC_VERSION(3,0)
680 #define ecb_decltype(x) __typeof(x)
681#endif
682
683#define ecb_noinline ecb_attribute ((__noinline__))
684#define ecb_noreturn ecb_attribute ((__noreturn__))
685#define ecb_unused ecb_attribute ((__unused__))
686#define ecb_const ecb_attribute ((__const__))
687#define ecb_pure ecb_attribute ((__pure__))
688
689#if ECB_GCC_VERSION(4,3)
690 #define ecb_artificial ecb_attribute ((__artificial__))
691 #define ecb_hot ecb_attribute ((__hot__))
692 #define ecb_cold ecb_attribute ((__cold__))
693#else
694 #define ecb_artificial
695 #define ecb_hot
696 #define ecb_cold
697#endif
698
699/* put around conditional expressions if you are very sure that the */
700/* expression is mostly true or mostly false. note that these return */
701/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 702#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 703#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
704/* for compatibility to the rest of the world */
705#define ecb_likely(expr) ecb_expect_true (expr)
706#define ecb_unlikely(expr) ecb_expect_false (expr)
707
708/* count trailing zero bits and count # of one bits */
709#if ECB_GCC_VERSION(3,4)
710 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
711 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
712 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
713 #define ecb_ctz32(x) __builtin_ctz (x)
714 #define ecb_ctz64(x) __builtin_ctzll (x)
715 #define ecb_popcount32(x) __builtin_popcount (x)
716 /* no popcountll */
717#else
718 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
719 ecb_function_ int
720 ecb_ctz32 (uint32_t x)
721 {
722 int r = 0;
723
724 x &= ~x + 1; /* this isolates the lowest bit */
725
726#if ECB_branchless_on_i386
727 r += !!(x & 0xaaaaaaaa) << 0;
728 r += !!(x & 0xcccccccc) << 1;
729 r += !!(x & 0xf0f0f0f0) << 2;
730 r += !!(x & 0xff00ff00) << 3;
731 r += !!(x & 0xffff0000) << 4;
732#else
733 if (x & 0xaaaaaaaa) r += 1;
734 if (x & 0xcccccccc) r += 2;
735 if (x & 0xf0f0f0f0) r += 4;
736 if (x & 0xff00ff00) r += 8;
737 if (x & 0xffff0000) r += 16;
738#endif
739
740 return r;
741 }
742
743 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
744 ecb_function_ int
745 ecb_ctz64 (uint64_t x)
746 {
747 int shift = x & 0xffffffffU ? 0 : 32;
748 return ecb_ctz32 (x >> shift) + shift;
749 }
750
751 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
752 ecb_function_ int
753 ecb_popcount32 (uint32_t x)
754 {
755 x -= (x >> 1) & 0x55555555;
756 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
757 x = ((x >> 4) + x) & 0x0f0f0f0f;
758 x *= 0x01010101;
759
760 return x >> 24;
761 }
762
763 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
764 ecb_function_ int ecb_ld32 (uint32_t x)
765 {
766 int r = 0;
767
768 if (x >> 16) { x >>= 16; r += 16; }
769 if (x >> 8) { x >>= 8; r += 8; }
770 if (x >> 4) { x >>= 4; r += 4; }
771 if (x >> 2) { x >>= 2; r += 2; }
772 if (x >> 1) { r += 1; }
773
774 return r;
775 }
776
777 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
778 ecb_function_ int ecb_ld64 (uint64_t x)
779 {
780 int r = 0;
781
782 if (x >> 32) { x >>= 32; r += 32; }
783
784 return r + ecb_ld32 (x);
785 }
786#endif
787
788ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
789ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
790{
791 return ( (x * 0x0802U & 0x22110U)
792 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
793}
794
795ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
796ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
797{
798 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
799 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
800 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
801 x = ( x >> 8 ) | ( x << 8);
802
803 return x;
804}
805
806ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
807ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
808{
809 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
810 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
811 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
812 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
813 x = ( x >> 16 ) | ( x << 16);
814
815 return x;
816}
817
818/* popcount64 is only available on 64 bit cpus as gcc builtin */
819/* so for this version we are lazy */
820ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
821ecb_function_ int
822ecb_popcount64 (uint64_t x)
823{
824 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
825}
826
827ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
828ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
829ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
830ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
831ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
832ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
833ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
834ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
835
836ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
837ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
838ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
839ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
840ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
841ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
842ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
843ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
844
845#if ECB_GCC_VERSION(4,3)
846 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
847 #define ecb_bswap32(x) __builtin_bswap32 (x)
848 #define ecb_bswap64(x) __builtin_bswap64 (x)
849#else
850 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
851 ecb_function_ uint16_t
852 ecb_bswap16 (uint16_t x)
853 {
854 return ecb_rotl16 (x, 8);
855 }
856
857 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
858 ecb_function_ uint32_t
859 ecb_bswap32 (uint32_t x)
860 {
861 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
862 }
863
864 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
865 ecb_function_ uint64_t
866 ecb_bswap64 (uint64_t x)
867 {
868 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
869 }
870#endif
871
872#if ECB_GCC_VERSION(4,5)
873 #define ecb_unreachable() __builtin_unreachable ()
874#else
875 /* this seems to work fine, but gcc always emits a warning for it :/ */
876 ecb_inline void ecb_unreachable (void) ecb_noreturn;
877 ecb_inline void ecb_unreachable (void) { }
878#endif
879
880/* try to tell the compiler that some condition is definitely true */
881#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
882
883ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
884ecb_inline unsigned char
885ecb_byteorder_helper (void)
886{
887 const uint32_t u = 0x11223344;
888 return *(unsigned char *)&u;
889}
890
891ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
892ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
893ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
894ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
895
896#if ECB_GCC_VERSION(3,0) || ECB_C99
897 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
898#else
899 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
900#endif
901
902#if __cplusplus
903 template<typename T>
904 static inline T ecb_div_rd (T val, T div)
905 {
906 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
907 }
908 template<typename T>
909 static inline T ecb_div_ru (T val, T div)
910 {
911 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
912 }
913#else
914 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
915 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
916#endif
917
918#if ecb_cplusplus_does_not_suck
919 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
920 template<typename T, int N>
921 static inline int ecb_array_length (const T (&arr)[N])
922 {
923 return N;
924 }
925#else
926 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
927#endif
928
929#endif
930
931/* ECB.H END */
932
933#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
934/* if your architecture doesn't need memory fences, e.g. because it is
935 * single-cpu/core, or if you use libev in a project that doesn't use libev
936 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
937 * libev, in which cases the memory fences become nops.
938 * alternatively, you can remove this #error and link against libpthread,
939 * which will then provide the memory fences.
940 */
941# error "memory fences not defined for your architecture, please report"
942#endif
943
944#ifndef ECB_MEMORY_FENCE
945# define ECB_MEMORY_FENCE do { } while (0)
946# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
947# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
948#endif
949
950#define expect_false(cond) ecb_expect_false (cond)
951#define expect_true(cond) ecb_expect_true (cond)
952#define noinline ecb_noinline
953
381#define inline_size static inline 954#define inline_size ecb_inline
382 955
383#if EV_MINIMAL 956#if EV_FEATURE_CODE
957# define inline_speed ecb_inline
958#else
384# define inline_speed static noinline 959# define inline_speed static noinline
960#endif
961
962#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
963
964#if EV_MINPRI == EV_MAXPRI
965# define ABSPRI(w) (((W)w), 0)
385#else 966#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 967# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
968#endif
391 969
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 970#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 971#define EMPTY2(a,b) /* used to suppress some warnings */
394 972
395typedef ev_watcher *W; 973typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 977#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 978#define ev_at(w) ((WT)(w))->at
401 979
402#if EV_USE_REALTIME 980#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 981/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 982/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 983static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 984#endif
407 985
408#if EV_USE_MONOTONIC 986#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 987static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 988#endif
411 989
990#ifndef EV_FD_TO_WIN32_HANDLE
991# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
992#endif
993#ifndef EV_WIN32_HANDLE_TO_FD
994# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
995#endif
996#ifndef EV_WIN32_CLOSE_FD
997# define EV_WIN32_CLOSE_FD(fd) close (fd)
998#endif
999
412#ifdef _WIN32 1000#ifdef _WIN32
413# include "ev_win32.c" 1001# include "ev_win32.c"
414#endif 1002#endif
415 1003
416/*****************************************************************************/ 1004/*****************************************************************************/
417 1005
1006/* define a suitable floor function (only used by periodics atm) */
1007
1008#if EV_USE_FLOOR
1009# include <math.h>
1010# define ev_floor(v) floor (v)
1011#else
1012
1013#include <float.h>
1014
1015/* a floor() replacement function, should be independent of ev_tstamp type */
1016static ev_tstamp noinline
1017ev_floor (ev_tstamp v)
1018{
1019 /* the choice of shift factor is not terribly important */
1020#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1021 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1022#else
1023 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1024#endif
1025
1026 /* argument too large for an unsigned long? */
1027 if (expect_false (v >= shift))
1028 {
1029 ev_tstamp f;
1030
1031 if (v == v - 1.)
1032 return v; /* very large number */
1033
1034 f = shift * ev_floor (v * (1. / shift));
1035 return f + ev_floor (v - f);
1036 }
1037
1038 /* special treatment for negative args? */
1039 if (expect_false (v < 0.))
1040 {
1041 ev_tstamp f = -ev_floor (-v);
1042
1043 return f - (f == v ? 0 : 1);
1044 }
1045
1046 /* fits into an unsigned long */
1047 return (unsigned long)v;
1048}
1049
1050#endif
1051
1052/*****************************************************************************/
1053
1054#ifdef __linux
1055# include <sys/utsname.h>
1056#endif
1057
1058static unsigned int noinline ecb_cold
1059ev_linux_version (void)
1060{
1061#ifdef __linux
1062 unsigned int v = 0;
1063 struct utsname buf;
1064 int i;
1065 char *p = buf.release;
1066
1067 if (uname (&buf))
1068 return 0;
1069
1070 for (i = 3+1; --i; )
1071 {
1072 unsigned int c = 0;
1073
1074 for (;;)
1075 {
1076 if (*p >= '0' && *p <= '9')
1077 c = c * 10 + *p++ - '0';
1078 else
1079 {
1080 p += *p == '.';
1081 break;
1082 }
1083 }
1084
1085 v = (v << 8) | c;
1086 }
1087
1088 return v;
1089#else
1090 return 0;
1091#endif
1092}
1093
1094/*****************************************************************************/
1095
1096#if EV_AVOID_STDIO
1097static void noinline ecb_cold
1098ev_printerr (const char *msg)
1099{
1100 write (STDERR_FILENO, msg, strlen (msg));
1101}
1102#endif
1103
418static void (*syserr_cb)(const char *msg); 1104static void (*syserr_cb)(const char *msg);
419 1105
420void 1106void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1107ev_set_syserr_cb (void (*cb)(const char *msg))
422{ 1108{
423 syserr_cb = cb; 1109 syserr_cb = cb;
424} 1110}
425 1111
426static void noinline 1112static void noinline ecb_cold
427ev_syserr (const char *msg) 1113ev_syserr (const char *msg)
428{ 1114{
429 if (!msg) 1115 if (!msg)
430 msg = "(libev) system error"; 1116 msg = "(libev) system error";
431 1117
432 if (syserr_cb) 1118 if (syserr_cb)
433 syserr_cb (msg); 1119 syserr_cb (msg);
434 else 1120 else
435 { 1121 {
1122#if EV_AVOID_STDIO
1123 ev_printerr (msg);
1124 ev_printerr (": ");
1125 ev_printerr (strerror (errno));
1126 ev_printerr ("\n");
1127#else
436 perror (msg); 1128 perror (msg);
1129#endif
437 abort (); 1130 abort ();
438 } 1131 }
439} 1132}
440 1133
441static void * 1134static void *
442ev_realloc_emul (void *ptr, long size) 1135ev_realloc_emul (void *ptr, long size)
443{ 1136{
1137#if __GLIBC__
1138 return realloc (ptr, size);
1139#else
444 /* some systems, notably openbsd and darwin, fail to properly 1140 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1141 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1142 * the single unix specification, so work around them here.
447 */ 1143 */
448 1144
449 if (size) 1145 if (size)
450 return realloc (ptr, size); 1146 return realloc (ptr, size);
451 1147
452 free (ptr); 1148 free (ptr);
453 return 0; 1149 return 0;
1150#endif
454} 1151}
455 1152
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1153static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 1154
458void 1155void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1156ev_set_allocator (void *(*cb)(void *ptr, long size))
460{ 1157{
461 alloc = cb; 1158 alloc = cb;
462} 1159}
463 1160
… …
466{ 1163{
467 ptr = alloc (ptr, size); 1164 ptr = alloc (ptr, size);
468 1165
469 if (!ptr && size) 1166 if (!ptr && size)
470 { 1167 {
1168#if EV_AVOID_STDIO
1169 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1170#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1171 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1172#endif
472 abort (); 1173 abort ();
473 } 1174 }
474 1175
475 return ptr; 1176 return ptr;
476} 1177}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1179#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1180#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1181
481/*****************************************************************************/ 1182/*****************************************************************************/
482 1183
1184/* set in reify when reification needed */
1185#define EV_ANFD_REIFY 1
1186
1187/* file descriptor info structure */
483typedef struct 1188typedef struct
484{ 1189{
485 WL head; 1190 WL head;
486 unsigned char events; 1191 unsigned char events; /* the events watched for */
487 unsigned char reify; 1192 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1193 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 1194 unsigned char unused;
490#if EV_USE_EPOLL 1195#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 1196 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 1197#endif
493#if EV_SELECT_IS_WINSOCKET 1198#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 1199 SOCKET handle;
495#endif 1200#endif
1201#if EV_USE_IOCP
1202 OVERLAPPED or, ow;
1203#endif
496} ANFD; 1204} ANFD;
497 1205
1206/* stores the pending event set for a given watcher */
498typedef struct 1207typedef struct
499{ 1208{
500 W w; 1209 W w;
501 int events; 1210 int events; /* the pending event set for the given watcher */
502} ANPENDING; 1211} ANPENDING;
503 1212
504#if EV_USE_INOTIFY 1213#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 1214/* hash table entry per inotify-id */
506typedef struct 1215typedef struct
… …
509} ANFS; 1218} ANFS;
510#endif 1219#endif
511 1220
512/* Heap Entry */ 1221/* Heap Entry */
513#if EV_HEAP_CACHE_AT 1222#if EV_HEAP_CACHE_AT
1223 /* a heap element */
514 typedef struct { 1224 typedef struct {
515 ev_tstamp at; 1225 ev_tstamp at;
516 WT w; 1226 WT w;
517 } ANHE; 1227 } ANHE;
518 1228
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1229 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1230 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1231 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 1232#else
1233 /* a heap element */
523 typedef WT ANHE; 1234 typedef WT ANHE;
524 1235
525 #define ANHE_w(he) (he) 1236 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 1237 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 1238 #define ANHE_at_cache(he)
… …
538 #undef VAR 1249 #undef VAR
539 }; 1250 };
540 #include "ev_wrap.h" 1251 #include "ev_wrap.h"
541 1252
542 static struct ev_loop default_loop_struct; 1253 static struct ev_loop default_loop_struct;
543 struct ev_loop *ev_default_loop_ptr; 1254 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
544 1255
545#else 1256#else
546 1257
547 ev_tstamp ev_rt_now; 1258 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
548 #define VAR(name,decl) static decl; 1259 #define VAR(name,decl) static decl;
549 #include "ev_vars.h" 1260 #include "ev_vars.h"
550 #undef VAR 1261 #undef VAR
551 1262
552 static int ev_default_loop_ptr; 1263 static int ev_default_loop_ptr;
553 1264
554#endif 1265#endif
555 1266
1267#if EV_FEATURE_API
1268# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1269# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1270# define EV_INVOKE_PENDING invoke_cb (EV_A)
1271#else
1272# define EV_RELEASE_CB (void)0
1273# define EV_ACQUIRE_CB (void)0
1274# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1275#endif
1276
1277#define EVBREAK_RECURSE 0x80
1278
556/*****************************************************************************/ 1279/*****************************************************************************/
557 1280
1281#ifndef EV_HAVE_EV_TIME
558ev_tstamp 1282ev_tstamp
559ev_time (void) 1283ev_time (void)
560{ 1284{
561#if EV_USE_REALTIME 1285#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 1286 if (expect_true (have_realtime))
… …
569 1293
570 struct timeval tv; 1294 struct timeval tv;
571 gettimeofday (&tv, 0); 1295 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 1296 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 1297}
1298#endif
574 1299
575inline_size ev_tstamp 1300inline_size ev_tstamp
576get_clock (void) 1301get_clock (void)
577{ 1302{
578#if EV_USE_MONOTONIC 1303#if EV_USE_MONOTONIC
… …
601 if (delay > 0.) 1326 if (delay > 0.)
602 { 1327 {
603#if EV_USE_NANOSLEEP 1328#if EV_USE_NANOSLEEP
604 struct timespec ts; 1329 struct timespec ts;
605 1330
606 ts.tv_sec = (time_t)delay; 1331 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 1332 nanosleep (&ts, 0);
610#elif defined(_WIN32) 1333#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3)); 1334 Sleep ((unsigned long)(delay * 1e3));
612#else 1335#else
613 struct timeval tv; 1336 struct timeval tv;
614 1337
615 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1338 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1339 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 1340 /* by older ones */
1341 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 1342 select (0, 0, 0, 0, &tv);
622#endif 1343#endif
623 } 1344 }
624} 1345}
625 1346
626/*****************************************************************************/ 1347/*****************************************************************************/
627 1348
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1349#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 1350
1351/* find a suitable new size for the given array, */
1352/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 1353inline_size int
631array_nextsize (int elem, int cur, int cnt) 1354array_nextsize (int elem, int cur, int cnt)
632{ 1355{
633 int ncur = cur + 1; 1356 int ncur = cur + 1;
634 1357
635 do 1358 do
636 ncur <<= 1; 1359 ncur <<= 1;
637 while (cnt > ncur); 1360 while (cnt > ncur);
638 1361
639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1362 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1363 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
641 { 1364 {
642 ncur *= elem; 1365 ncur *= elem;
643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1366 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
644 ncur = ncur - sizeof (void *) * 4; 1367 ncur = ncur - sizeof (void *) * 4;
… …
646 } 1369 }
647 1370
648 return ncur; 1371 return ncur;
649} 1372}
650 1373
651static noinline void * 1374static void * noinline ecb_cold
652array_realloc (int elem, void *base, int *cur, int cnt) 1375array_realloc (int elem, void *base, int *cur, int cnt)
653{ 1376{
654 *cur = array_nextsize (elem, *cur, cnt); 1377 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 1378 return ev_realloc (base, elem * *cur);
656} 1379}
… …
659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1382 memset ((void *)(base), 0, sizeof (*(base)) * (count))
660 1383
661#define array_needsize(type,base,cur,cnt,init) \ 1384#define array_needsize(type,base,cur,cnt,init) \
662 if (expect_false ((cnt) > (cur))) \ 1385 if (expect_false ((cnt) > (cur))) \
663 { \ 1386 { \
664 int ocur_ = (cur); \ 1387 int ecb_unused ocur_ = (cur); \
665 (base) = (type *)array_realloc \ 1388 (base) = (type *)array_realloc \
666 (sizeof (type), (base), &(cur), (cnt)); \ 1389 (sizeof (type), (base), &(cur), (cnt)); \
667 init ((base) + (ocur_), (cur) - ocur_); \ 1390 init ((base) + (ocur_), (cur) - ocur_); \
668 } 1391 }
669 1392
… …
680#define array_free(stem, idx) \ 1403#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1404 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 1405
683/*****************************************************************************/ 1406/*****************************************************************************/
684 1407
1408/* dummy callback for pending events */
1409static void noinline
1410pendingcb (EV_P_ ev_prepare *w, int revents)
1411{
1412}
1413
685void noinline 1414void noinline
686ev_feed_event (EV_P_ void *w, int revents) 1415ev_feed_event (EV_P_ void *w, int revents)
687{ 1416{
688 W w_ = (W)w; 1417 W w_ = (W)w;
689 int pri = ABSPRI (w_); 1418 int pri = ABSPRI (w_);
… …
724} 1453}
725 1454
726/*****************************************************************************/ 1455/*****************************************************************************/
727 1456
728inline_speed void 1457inline_speed void
729fd_event (EV_P_ int fd, int revents) 1458fd_event_nocheck (EV_P_ int fd, int revents)
730{ 1459{
731 ANFD *anfd = anfds + fd; 1460 ANFD *anfd = anfds + fd;
732 ev_io *w; 1461 ev_io *w;
733 1462
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1463 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 1467 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 1468 ev_feed_event (EV_A_ (W)w, ev);
740 } 1469 }
741} 1470}
742 1471
1472/* do not submit kernel events for fds that have reify set */
1473/* because that means they changed while we were polling for new events */
1474inline_speed void
1475fd_event (EV_P_ int fd, int revents)
1476{
1477 ANFD *anfd = anfds + fd;
1478
1479 if (expect_true (!anfd->reify))
1480 fd_event_nocheck (EV_A_ fd, revents);
1481}
1482
743void 1483void
744ev_feed_fd_event (EV_P_ int fd, int revents) 1484ev_feed_fd_event (EV_P_ int fd, int revents)
745{ 1485{
746 if (fd >= 0 && fd < anfdmax) 1486 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 1487 fd_event_nocheck (EV_A_ fd, revents);
748} 1488}
749 1489
1490/* make sure the external fd watch events are in-sync */
1491/* with the kernel/libev internal state */
750inline_size void 1492inline_size void
751fd_reify (EV_P) 1493fd_reify (EV_P)
752{ 1494{
753 int i; 1495 int i;
1496
1497#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1498 for (i = 0; i < fdchangecnt; ++i)
1499 {
1500 int fd = fdchanges [i];
1501 ANFD *anfd = anfds + fd;
1502
1503 if (anfd->reify & EV__IOFDSET && anfd->head)
1504 {
1505 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1506
1507 if (handle != anfd->handle)
1508 {
1509 unsigned long arg;
1510
1511 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1512
1513 /* handle changed, but fd didn't - we need to do it in two steps */
1514 backend_modify (EV_A_ fd, anfd->events, 0);
1515 anfd->events = 0;
1516 anfd->handle = handle;
1517 }
1518 }
1519 }
1520#endif
754 1521
755 for (i = 0; i < fdchangecnt; ++i) 1522 for (i = 0; i < fdchangecnt; ++i)
756 { 1523 {
757 int fd = fdchanges [i]; 1524 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 1525 ANFD *anfd = anfds + fd;
759 ev_io *w; 1526 ev_io *w;
760 1527
761 unsigned char events = 0; 1528 unsigned char o_events = anfd->events;
1529 unsigned char o_reify = anfd->reify;
762 1530
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1531 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 1532
766#if EV_SELECT_IS_WINSOCKET 1533 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 1534 {
769 unsigned long arg; 1535 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 1536
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1537 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 1538 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 1539
774 #endif 1540 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1541 o_reify = EV__IOFDSET; /* actually |= */
776 } 1542 }
777#endif
778 1543
779 { 1544 if (o_reify & EV__IOFDSET)
780 unsigned char o_events = anfd->events;
781 unsigned char o_reify = anfd->reify;
782
783 anfd->reify = 0;
784 anfd->events = events;
785
786 if (o_events != events || o_reify & EV__IOFDSET)
787 backend_modify (EV_A_ fd, o_events, events); 1545 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1546 }
790 1547
791 fdchangecnt = 0; 1548 fdchangecnt = 0;
792} 1549}
793 1550
1551/* something about the given fd changed */
794inline_size void 1552inline_size void
795fd_change (EV_P_ int fd, int flags) 1553fd_change (EV_P_ int fd, int flags)
796{ 1554{
797 unsigned char reify = anfds [fd].reify; 1555 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1556 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1561 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1562 fdchanges [fdchangecnt - 1] = fd;
805 } 1563 }
806} 1564}
807 1565
1566/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1567inline_speed void ecb_cold
809fd_kill (EV_P_ int fd) 1568fd_kill (EV_P_ int fd)
810{ 1569{
811 ev_io *w; 1570 ev_io *w;
812 1571
813 while ((w = (ev_io *)anfds [fd].head)) 1572 while ((w = (ev_io *)anfds [fd].head))
… …
815 ev_io_stop (EV_A_ w); 1574 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1575 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1576 }
818} 1577}
819 1578
1579/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1580inline_size int ecb_cold
821fd_valid (int fd) 1581fd_valid (int fd)
822{ 1582{
823#ifdef _WIN32 1583#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1584 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1585#else
826 return fcntl (fd, F_GETFD) != -1; 1586 return fcntl (fd, F_GETFD) != -1;
827#endif 1587#endif
828} 1588}
829 1589
830/* called on EBADF to verify fds */ 1590/* called on EBADF to verify fds */
831static void noinline 1591static void noinline ecb_cold
832fd_ebadf (EV_P) 1592fd_ebadf (EV_P)
833{ 1593{
834 int fd; 1594 int fd;
835 1595
836 for (fd = 0; fd < anfdmax; ++fd) 1596 for (fd = 0; fd < anfdmax; ++fd)
… …
838 if (!fd_valid (fd) && errno == EBADF) 1598 if (!fd_valid (fd) && errno == EBADF)
839 fd_kill (EV_A_ fd); 1599 fd_kill (EV_A_ fd);
840} 1600}
841 1601
842/* called on ENOMEM in select/poll to kill some fds and retry */ 1602/* called on ENOMEM in select/poll to kill some fds and retry */
843static void noinline 1603static void noinline ecb_cold
844fd_enomem (EV_P) 1604fd_enomem (EV_P)
845{ 1605{
846 int fd; 1606 int fd;
847 1607
848 for (fd = anfdmax; fd--; ) 1608 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1609 if (anfds [fd].events)
850 { 1610 {
851 fd_kill (EV_A_ fd); 1611 fd_kill (EV_A_ fd);
852 return; 1612 break;
853 } 1613 }
854} 1614}
855 1615
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1616/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1617static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1622 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1623 if (anfds [fd].events)
864 { 1624 {
865 anfds [fd].events = 0; 1625 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1626 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1627 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1628 }
869} 1629}
870 1630
1631/* used to prepare libev internal fd's */
1632/* this is not fork-safe */
1633inline_speed void
1634fd_intern (int fd)
1635{
1636#ifdef _WIN32
1637 unsigned long arg = 1;
1638 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1639#else
1640 fcntl (fd, F_SETFD, FD_CLOEXEC);
1641 fcntl (fd, F_SETFL, O_NONBLOCK);
1642#endif
1643}
1644
871/*****************************************************************************/ 1645/*****************************************************************************/
872 1646
873/* 1647/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1648 * the heap functions want a real array index. array index 0 is guaranteed to not
875 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1649 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1650 * the branching factor of the d-tree.
877 */ 1651 */
878 1652
879/* 1653/*
… …
947 1721
948 for (;;) 1722 for (;;)
949 { 1723 {
950 int c = k << 1; 1724 int c = k << 1;
951 1725
952 if (c > N + HEAP0 - 1) 1726 if (c >= N + HEAP0)
953 break; 1727 break;
954 1728
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1729 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1730 ? 1 : 0;
957 1731
… …
989 1763
990 heap [k] = he; 1764 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1765 ev_active (ANHE_w (he)) = k;
992} 1766}
993 1767
1768/* move an element suitably so it is in a correct place */
994inline_size void 1769inline_size void
995adjustheap (ANHE *heap, int N, int k) 1770adjustheap (ANHE *heap, int N, int k)
996{ 1771{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1772 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1773 upheap (heap, k);
999 else 1774 else
1000 downheap (heap, N, k); 1775 downheap (heap, N, k);
1001} 1776}
1002 1777
… …
1012 upheap (heap, i + HEAP0); 1787 upheap (heap, i + HEAP0);
1013} 1788}
1014 1789
1015/*****************************************************************************/ 1790/*****************************************************************************/
1016 1791
1792/* associate signal watchers to a signal signal */
1017typedef struct 1793typedef struct
1018{ 1794{
1795 EV_ATOMIC_T pending;
1796#if EV_MULTIPLICITY
1797 EV_P;
1798#endif
1019 WL head; 1799 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1800} ANSIG;
1022 1801
1023static ANSIG *signals; 1802static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1803
1028/*****************************************************************************/ 1804/*****************************************************************************/
1029 1805
1030inline_speed void 1806#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1031fd_intern (int fd)
1032{
1033#ifdef _WIN32
1034 unsigned long arg = 1;
1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1036#else
1037 fcntl (fd, F_SETFD, FD_CLOEXEC);
1038 fcntl (fd, F_SETFL, O_NONBLOCK);
1039#endif
1040}
1041 1807
1042static void noinline 1808static void noinline ecb_cold
1043evpipe_init (EV_P) 1809evpipe_init (EV_P)
1044{ 1810{
1045 if (!ev_is_active (&pipeev)) 1811 if (!ev_is_active (&pipe_w))
1046 { 1812 {
1047#if EV_USE_EVENTFD 1813# if EV_USE_EVENTFD
1814 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1815 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1816 evfd = eventfd (0, 0);
1817
1818 if (evfd >= 0)
1049 { 1819 {
1050 evpipe [0] = -1; 1820 evpipe [0] = -1;
1051 fd_intern (evfd); 1821 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1822 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1823 }
1054 else 1824 else
1055#endif 1825# endif
1056 { 1826 {
1057 while (pipe (evpipe)) 1827 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1828 ev_syserr ("(libev) error creating signal/async pipe");
1059 1829
1060 fd_intern (evpipe [0]); 1830 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1831 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1832 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1833 }
1064 1834
1065 ev_io_start (EV_A_ &pipeev); 1835 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1836 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1837 }
1068} 1838}
1069 1839
1070inline_size void 1840inline_speed void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1841evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1842{
1073 if (!*flag) 1843 if (expect_true (*flag))
1844 return;
1845
1846 *flag = 1;
1847
1848 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1849
1850 pipe_write_skipped = 1;
1851
1852 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1853
1854 if (pipe_write_wanted)
1074 { 1855 {
1856 int old_errno;
1857
1858 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1859
1075 int old_errno = errno; /* save errno because write might clobber it */ 1860 old_errno = errno; /* save errno because write will clobber it */
1076
1077 *flag = 1;
1078 1861
1079#if EV_USE_EVENTFD 1862#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1863 if (evfd >= 0)
1081 { 1864 {
1082 uint64_t counter = 1; 1865 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1866 write (evfd, &counter, sizeof (uint64_t));
1084 } 1867 }
1085 else 1868 else
1086#endif 1869#endif
1870 {
1871 /* win32 people keep sending patches that change this write() to send() */
1872 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1873 /* so when you think this write should be a send instead, please find out */
1874 /* where your send() is from - it's definitely not the microsoft send, and */
1875 /* tell me. thank you. */
1876 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1877 /* check the ev documentation on how to use this flag */
1087 write (evpipe [1], &old_errno, 1); 1878 write (evpipe [1], &(evpipe [1]), 1);
1879 }
1088 1880
1089 errno = old_errno; 1881 errno = old_errno;
1090 } 1882 }
1091} 1883}
1092 1884
1885/* called whenever the libev signal pipe */
1886/* got some events (signal, async) */
1093static void 1887static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1888pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1889{
1890 int i;
1891
1892 if (revents & EV_READ)
1893 {
1096#if EV_USE_EVENTFD 1894#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1895 if (evfd >= 0)
1098 { 1896 {
1099 uint64_t counter; 1897 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1898 read (evfd, &counter, sizeof (uint64_t));
1101 } 1899 }
1102 else 1900 else
1103#endif 1901#endif
1104 { 1902 {
1105 char dummy; 1903 char dummy;
1904 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1905 read (evpipe [0], &dummy, 1);
1906 }
1907 }
1908
1909 pipe_write_skipped = 0;
1910
1911#if EV_SIGNAL_ENABLE
1912 if (sig_pending)
1107 } 1913 {
1914 sig_pending = 0;
1108 1915
1109 if (gotsig && ev_is_default_loop (EV_A)) 1916 for (i = EV_NSIG - 1; i--; )
1110 { 1917 if (expect_false (signals [i].pending))
1111 int signum;
1112 gotsig = 0;
1113
1114 for (signum = signalmax; signum--; )
1115 if (signals [signum].gotsig)
1116 ev_feed_signal_event (EV_A_ signum + 1); 1918 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1919 }
1920#endif
1118 1921
1119#if EV_ASYNC_ENABLE 1922#if EV_ASYNC_ENABLE
1120 if (gotasync) 1923 if (async_pending)
1121 { 1924 {
1122 int i; 1925 async_pending = 0;
1123 gotasync = 0;
1124 1926
1125 for (i = asynccnt; i--; ) 1927 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1928 if (asyncs [i]->sent)
1127 { 1929 {
1128 asyncs [i]->sent = 0; 1930 asyncs [i]->sent = 0;
… …
1132#endif 1934#endif
1133} 1935}
1134 1936
1135/*****************************************************************************/ 1937/*****************************************************************************/
1136 1938
1939void
1940ev_feed_signal (int signum)
1941{
1942#if EV_MULTIPLICITY
1943 EV_P = signals [signum - 1].loop;
1944
1945 if (!EV_A)
1946 return;
1947#endif
1948
1949 if (!ev_active (&pipe_w))
1950 return;
1951
1952 signals [signum - 1].pending = 1;
1953 evpipe_write (EV_A_ &sig_pending);
1954}
1955
1137static void 1956static void
1138ev_sighandler (int signum) 1957ev_sighandler (int signum)
1139{ 1958{
1140#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct;
1142#endif
1143
1144#if _WIN32 1959#ifdef _WIN32
1145 signal (signum, ev_sighandler); 1960 signal (signum, ev_sighandler);
1146#endif 1961#endif
1147 1962
1148 signals [signum - 1].gotsig = 1; 1963 ev_feed_signal (signum);
1149 evpipe_write (EV_A_ &gotsig);
1150} 1964}
1151 1965
1152void noinline 1966void noinline
1153ev_feed_signal_event (EV_P_ int signum) 1967ev_feed_signal_event (EV_P_ int signum)
1154{ 1968{
1155 WL w; 1969 WL w;
1156 1970
1971 if (expect_false (signum <= 0 || signum > EV_NSIG))
1972 return;
1973
1974 --signum;
1975
1157#if EV_MULTIPLICITY 1976#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1977 /* it is permissible to try to feed a signal to the wrong loop */
1159#endif 1978 /* or, likely more useful, feeding a signal nobody is waiting for */
1160 1979
1161 --signum; 1980 if (expect_false (signals [signum].loop != EV_A))
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1981 return;
1982#endif
1165 1983
1166 signals [signum].gotsig = 0; 1984 signals [signum].pending = 0;
1167 1985
1168 for (w = signals [signum].head; w; w = w->next) 1986 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1987 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1988}
1171 1989
1990#if EV_USE_SIGNALFD
1991static void
1992sigfdcb (EV_P_ ev_io *iow, int revents)
1993{
1994 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1995
1996 for (;;)
1997 {
1998 ssize_t res = read (sigfd, si, sizeof (si));
1999
2000 /* not ISO-C, as res might be -1, but works with SuS */
2001 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2002 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2003
2004 if (res < (ssize_t)sizeof (si))
2005 break;
2006 }
2007}
2008#endif
2009
2010#endif
2011
1172/*****************************************************************************/ 2012/*****************************************************************************/
1173 2013
2014#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 2015static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 2016
1178static ev_signal childev; 2017static ev_signal childev;
1179 2018
1180#ifndef WIFCONTINUED 2019#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 2020# define WIFCONTINUED(status) 0
1182#endif 2021#endif
1183 2022
2023/* handle a single child status event */
1184inline_speed void 2024inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 2025child_reap (EV_P_ int chain, int pid, int status)
1186{ 2026{
1187 ev_child *w; 2027 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2028 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 2029
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2030 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 2031 {
1192 if ((w->pid == pid || !w->pid) 2032 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 2033 && (!traced || (w->flags & 1)))
1194 { 2034 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2035 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 2042
1203#ifndef WCONTINUED 2043#ifndef WCONTINUED
1204# define WCONTINUED 0 2044# define WCONTINUED 0
1205#endif 2045#endif
1206 2046
2047/* called on sigchld etc., calls waitpid */
1207static void 2048static void
1208childcb (EV_P_ ev_signal *sw, int revents) 2049childcb (EV_P_ ev_signal *sw, int revents)
1209{ 2050{
1210 int pid, status; 2051 int pid, status;
1211 2052
… …
1219 /* make sure we are called again until all children have been reaped */ 2060 /* make sure we are called again until all children have been reaped */
1220 /* we need to do it this way so that the callback gets called before we continue */ 2061 /* we need to do it this way so that the callback gets called before we continue */
1221 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2062 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 2063
1223 child_reap (EV_A_ pid, pid, status); 2064 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 2065 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2066 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 2067}
1227 2068
1228#endif 2069#endif
1229 2070
1230/*****************************************************************************/ 2071/*****************************************************************************/
1231 2072
2073#if EV_USE_IOCP
2074# include "ev_iocp.c"
2075#endif
1232#if EV_USE_PORT 2076#if EV_USE_PORT
1233# include "ev_port.c" 2077# include "ev_port.c"
1234#endif 2078#endif
1235#if EV_USE_KQUEUE 2079#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 2080# include "ev_kqueue.c"
… …
1243#endif 2087#endif
1244#if EV_USE_SELECT 2088#if EV_USE_SELECT
1245# include "ev_select.c" 2089# include "ev_select.c"
1246#endif 2090#endif
1247 2091
1248int 2092int ecb_cold
1249ev_version_major (void) 2093ev_version_major (void)
1250{ 2094{
1251 return EV_VERSION_MAJOR; 2095 return EV_VERSION_MAJOR;
1252} 2096}
1253 2097
1254int 2098int ecb_cold
1255ev_version_minor (void) 2099ev_version_minor (void)
1256{ 2100{
1257 return EV_VERSION_MINOR; 2101 return EV_VERSION_MINOR;
1258} 2102}
1259 2103
1260/* return true if we are running with elevated privileges and should ignore env variables */ 2104/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 2105int inline_size ecb_cold
1262enable_secure (void) 2106enable_secure (void)
1263{ 2107{
1264#ifdef _WIN32 2108#ifdef _WIN32
1265 return 0; 2109 return 0;
1266#else 2110#else
1267 return getuid () != geteuid () 2111 return getuid () != geteuid ()
1268 || getgid () != getegid (); 2112 || getgid () != getegid ();
1269#endif 2113#endif
1270} 2114}
1271 2115
1272unsigned int 2116unsigned int ecb_cold
1273ev_supported_backends (void) 2117ev_supported_backends (void)
1274{ 2118{
1275 unsigned int flags = 0; 2119 unsigned int flags = 0;
1276 2120
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2121 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2125 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1282 2126
1283 return flags; 2127 return flags;
1284} 2128}
1285 2129
1286unsigned int 2130unsigned int ecb_cold
1287ev_recommended_backends (void) 2131ev_recommended_backends (void)
1288{ 2132{
1289 unsigned int flags = ev_supported_backends (); 2133 unsigned int flags = ev_supported_backends ();
1290 2134
1291#ifndef __NetBSD__ 2135#ifndef __NetBSD__
… …
1296#ifdef __APPLE__ 2140#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 2141 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2142 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2143 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 2144#endif
2145#ifdef __FreeBSD__
2146 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2147#endif
1301 2148
1302 return flags; 2149 return flags;
1303} 2150}
1304 2151
1305unsigned int 2152unsigned int ecb_cold
1306ev_embeddable_backends (void) 2153ev_embeddable_backends (void)
1307{ 2154{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2155 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 2156
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2157 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1311 /* please fix it and tell me how to detect the fix */ 2158 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 2159 flags &= ~EVBACKEND_EPOLL;
1313 2160
1314 return flags; 2161 return flags;
1315} 2162}
1316 2163
1317unsigned int 2164unsigned int
1318ev_backend (EV_P) 2165ev_backend (EV_P)
1319{ 2166{
1320 return backend; 2167 return backend;
1321} 2168}
1322 2169
2170#if EV_FEATURE_API
1323unsigned int 2171unsigned int
1324ev_loop_count (EV_P) 2172ev_iteration (EV_P)
1325{ 2173{
1326 return loop_count; 2174 return loop_count;
2175}
2176
2177unsigned int
2178ev_depth (EV_P)
2179{
2180 return loop_depth;
1327} 2181}
1328 2182
1329void 2183void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2184ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331{ 2185{
… …
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2190ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337{ 2191{
1338 timeout_blocktime = interval; 2192 timeout_blocktime = interval;
1339} 2193}
1340 2194
2195void
2196ev_set_userdata (EV_P_ void *data)
2197{
2198 userdata = data;
2199}
2200
2201void *
2202ev_userdata (EV_P)
2203{
2204 return userdata;
2205}
2206
2207void
2208ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2209{
2210 invoke_cb = invoke_pending_cb;
2211}
2212
2213void
2214ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2215{
2216 release_cb = release;
2217 acquire_cb = acquire;
2218}
2219#endif
2220
2221/* initialise a loop structure, must be zero-initialised */
1341static void noinline 2222static void noinline ecb_cold
1342loop_init (EV_P_ unsigned int flags) 2223loop_init (EV_P_ unsigned int flags)
1343{ 2224{
1344 if (!backend) 2225 if (!backend)
1345 { 2226 {
2227 origflags = flags;
2228
1346#if EV_USE_REALTIME 2229#if EV_USE_REALTIME
1347 if (!have_realtime) 2230 if (!have_realtime)
1348 { 2231 {
1349 struct timespec ts; 2232 struct timespec ts;
1350 2233
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2244 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 2245 have_monotonic = 1;
1363 } 2246 }
1364#endif 2247#endif
1365 2248
1366 ev_rt_now = ev_time ();
1367 mn_now = get_clock ();
1368 now_floor = mn_now;
1369 rtmn_diff = ev_rt_now - mn_now;
1370
1371 io_blocktime = 0.;
1372 timeout_blocktime = 0.;
1373 backend = 0;
1374 backend_fd = -1;
1375 gotasync = 0;
1376#if EV_USE_INOTIFY
1377 fs_fd = -2;
1378#endif
1379
1380 /* pid check not overridable via env */ 2249 /* pid check not overridable via env */
1381#ifndef _WIN32 2250#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 2251 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 2252 curpid = getpid ();
1384#endif 2253#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 2255 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 2256 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 2257 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 2258 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 2259
1391 if (!(flags & 0x0000ffffU)) 2260 ev_rt_now = ev_time ();
2261 mn_now = get_clock ();
2262 now_floor = mn_now;
2263 rtmn_diff = ev_rt_now - mn_now;
2264#if EV_FEATURE_API
2265 invoke_cb = ev_invoke_pending;
2266#endif
2267
2268 io_blocktime = 0.;
2269 timeout_blocktime = 0.;
2270 backend = 0;
2271 backend_fd = -1;
2272 sig_pending = 0;
2273#if EV_ASYNC_ENABLE
2274 async_pending = 0;
2275#endif
2276 pipe_write_skipped = 0;
2277 pipe_write_wanted = 0;
2278#if EV_USE_INOTIFY
2279 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2280#endif
2281#if EV_USE_SIGNALFD
2282 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2283#endif
2284
2285 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 2286 flags |= ev_recommended_backends ();
1393 2287
2288#if EV_USE_IOCP
2289 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2290#endif
1394#if EV_USE_PORT 2291#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2292 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 2293#endif
1397#if EV_USE_KQUEUE 2294#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2295 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 2302#endif
1406#if EV_USE_SELECT 2303#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2304 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 2305#endif
1409 2306
2307 ev_prepare_init (&pending_w, pendingcb);
2308
2309#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 2310 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 2311 ev_set_priority (&pipe_w, EV_MAXPRI);
2312#endif
1412 } 2313 }
1413} 2314}
1414 2315
1415static void noinline 2316/* free up a loop structure */
2317void ecb_cold
1416loop_destroy (EV_P) 2318ev_loop_destroy (EV_P)
1417{ 2319{
1418 int i; 2320 int i;
1419 2321
2322#if EV_MULTIPLICITY
2323 /* mimic free (0) */
2324 if (!EV_A)
2325 return;
2326#endif
2327
2328#if EV_CLEANUP_ENABLE
2329 /* queue cleanup watchers (and execute them) */
2330 if (expect_false (cleanupcnt))
2331 {
2332 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2333 EV_INVOKE_PENDING;
2334 }
2335#endif
2336
2337#if EV_CHILD_ENABLE
2338 if (ev_is_active (&childev))
2339 {
2340 ev_ref (EV_A); /* child watcher */
2341 ev_signal_stop (EV_A_ &childev);
2342 }
2343#endif
2344
1420 if (ev_is_active (&pipeev)) 2345 if (ev_is_active (&pipe_w))
1421 { 2346 {
1422 ev_ref (EV_A); /* signal watcher */ 2347 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 2348 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 2349
1425#if EV_USE_EVENTFD 2350#if EV_USE_EVENTFD
1426 if (evfd >= 0) 2351 if (evfd >= 0)
1427 close (evfd); 2352 close (evfd);
1428#endif 2353#endif
1429 2354
1430 if (evpipe [0] >= 0) 2355 if (evpipe [0] >= 0)
1431 { 2356 {
1432 close (evpipe [0]); 2357 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 2358 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 2359 }
1435 } 2360 }
2361
2362#if EV_USE_SIGNALFD
2363 if (ev_is_active (&sigfd_w))
2364 close (sigfd);
2365#endif
1436 2366
1437#if EV_USE_INOTIFY 2367#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 2368 if (fs_fd >= 0)
1439 close (fs_fd); 2369 close (fs_fd);
1440#endif 2370#endif
1441 2371
1442 if (backend_fd >= 0) 2372 if (backend_fd >= 0)
1443 close (backend_fd); 2373 close (backend_fd);
1444 2374
2375#if EV_USE_IOCP
2376 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2377#endif
1445#if EV_USE_PORT 2378#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2379 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 2380#endif
1448#if EV_USE_KQUEUE 2381#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2382 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 2397#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 2398 array_free (idle, [i]);
1466#endif 2399#endif
1467 } 2400 }
1468 2401
1469 ev_free (anfds); anfdmax = 0; 2402 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 2403
1471 /* have to use the microsoft-never-gets-it-right macro */ 2404 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 2405 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 2406 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 2407 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 2409 array_free (periodic, EMPTY);
1477#endif 2410#endif
1478#if EV_FORK_ENABLE 2411#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 2412 array_free (fork, EMPTY);
1480#endif 2413#endif
2414#if EV_CLEANUP_ENABLE
2415 array_free (cleanup, EMPTY);
2416#endif
1481 array_free (prepare, EMPTY); 2417 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 2418 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 2419#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 2420 array_free (async, EMPTY);
1485#endif 2421#endif
1486 2422
1487 backend = 0; 2423 backend = 0;
2424
2425#if EV_MULTIPLICITY
2426 if (ev_is_default_loop (EV_A))
2427#endif
2428 ev_default_loop_ptr = 0;
2429#if EV_MULTIPLICITY
2430 else
2431 ev_free (EV_A);
2432#endif
1488} 2433}
1489 2434
1490#if EV_USE_INOTIFY 2435#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 2436inline_size void infy_fork (EV_P);
1492#endif 2437#endif
… …
1505#endif 2450#endif
1506#if EV_USE_INOTIFY 2451#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 2452 infy_fork (EV_A);
1508#endif 2453#endif
1509 2454
1510 if (ev_is_active (&pipeev)) 2455 if (ev_is_active (&pipe_w))
1511 { 2456 {
1512 /* this "locks" the handlers against writing to the pipe */ 2457 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1513 /* while we modify the fd vars */
1514 gotsig = 1;
1515#if EV_ASYNC_ENABLE
1516 gotasync = 1;
1517#endif
1518 2458
1519 ev_ref (EV_A); 2459 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 2460 ev_io_stop (EV_A_ &pipe_w);
1521 2461
1522#if EV_USE_EVENTFD 2462#if EV_USE_EVENTFD
1523 if (evfd >= 0) 2463 if (evfd >= 0)
1524 close (evfd); 2464 close (evfd);
1525#endif 2465#endif
1526 2466
1527 if (evpipe [0] >= 0) 2467 if (evpipe [0] >= 0)
1528 { 2468 {
1529 close (evpipe [0]); 2469 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 2470 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 2471 }
1532 2472
2473#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 2474 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 2475 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 2476 pipecb (EV_A_ &pipe_w, EV_READ);
2477#endif
1536 } 2478 }
1537 2479
1538 postfork = 0; 2480 postfork = 0;
1539} 2481}
1540 2482
1541#if EV_MULTIPLICITY 2483#if EV_MULTIPLICITY
1542 2484
1543struct ev_loop * 2485struct ev_loop * ecb_cold
1544ev_loop_new (unsigned int flags) 2486ev_loop_new (unsigned int flags)
1545{ 2487{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2488 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 2489
1548 memset (loop, 0, sizeof (struct ev_loop)); 2490 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 2491 loop_init (EV_A_ flags);
1551 2492
1552 if (ev_backend (EV_A)) 2493 if (ev_backend (EV_A))
1553 return loop; 2494 return EV_A;
1554 2495
2496 ev_free (EV_A);
1555 return 0; 2497 return 0;
1556} 2498}
1557 2499
1558void 2500#endif /* multiplicity */
1559ev_loop_destroy (EV_P)
1560{
1561 loop_destroy (EV_A);
1562 ev_free (loop);
1563}
1564
1565void
1566ev_loop_fork (EV_P)
1567{
1568 postfork = 1; /* must be in line with ev_default_fork */
1569}
1570 2501
1571#if EV_VERIFY 2502#if EV_VERIFY
1572static void noinline 2503static void noinline ecb_cold
1573verify_watcher (EV_P_ W w) 2504verify_watcher (EV_P_ W w)
1574{ 2505{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2506 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 2507
1577 if (w->pending) 2508 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2509 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 2510}
1580 2511
1581static void noinline 2512static void noinline ecb_cold
1582verify_heap (EV_P_ ANHE *heap, int N) 2513verify_heap (EV_P_ ANHE *heap, int N)
1583{ 2514{
1584 int i; 2515 int i;
1585 2516
1586 for (i = HEAP0; i < N + HEAP0; ++i) 2517 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 2522
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2523 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 2524 }
1594} 2525}
1595 2526
1596static void noinline 2527static void noinline ecb_cold
1597array_verify (EV_P_ W *ws, int cnt) 2528array_verify (EV_P_ W *ws, int cnt)
1598{ 2529{
1599 while (cnt--) 2530 while (cnt--)
1600 { 2531 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2532 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 2533 verify_watcher (EV_A_ ws [cnt]);
1603 } 2534 }
1604} 2535}
1605#endif 2536#endif
1606 2537
1607void 2538#if EV_FEATURE_API
2539void ecb_cold
1608ev_loop_verify (EV_P) 2540ev_verify (EV_P)
1609{ 2541{
1610#if EV_VERIFY 2542#if EV_VERIFY
1611 int i; 2543 int i;
1612 WL w; 2544 WL w;
1613 2545
… …
1647#if EV_FORK_ENABLE 2579#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2580 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2581 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2582#endif
1651 2583
2584#if EV_CLEANUP_ENABLE
2585 assert (cleanupmax >= cleanupcnt);
2586 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2587#endif
2588
1652#if EV_ASYNC_ENABLE 2589#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2590 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2591 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2592#endif
1656 2593
2594#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2595 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2596 array_verify (EV_A_ (W *)prepares, preparecnt);
2597#endif
1659 2598
2599#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2600 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2601 array_verify (EV_A_ (W *)checks, checkcnt);
2602#endif
1662 2603
1663# if 0 2604# if 0
2605#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2606 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1665 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2607 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2608#endif
1666# endif 2609# endif
1667#endif 2610#endif
1668} 2611}
1669 2612#endif
1670#endif /* multiplicity */
1671 2613
1672#if EV_MULTIPLICITY 2614#if EV_MULTIPLICITY
1673struct ev_loop * 2615struct ev_loop * ecb_cold
1674ev_default_loop_init (unsigned int flags)
1675#else 2616#else
1676int 2617int
2618#endif
1677ev_default_loop (unsigned int flags) 2619ev_default_loop (unsigned int flags)
1678#endif
1679{ 2620{
1680 if (!ev_default_loop_ptr) 2621 if (!ev_default_loop_ptr)
1681 { 2622 {
1682#if EV_MULTIPLICITY 2623#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2624 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2625#else
1685 ev_default_loop_ptr = 1; 2626 ev_default_loop_ptr = 1;
1686#endif 2627#endif
1687 2628
1688 loop_init (EV_A_ flags); 2629 loop_init (EV_A_ flags);
1689 2630
1690 if (ev_backend (EV_A)) 2631 if (ev_backend (EV_A))
1691 { 2632 {
1692#ifndef _WIN32 2633#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2634 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2635 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2636 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2637 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2638#endif
… …
1702 2643
1703 return ev_default_loop_ptr; 2644 return ev_default_loop_ptr;
1704} 2645}
1705 2646
1706void 2647void
1707ev_default_destroy (void) 2648ev_loop_fork (EV_P)
1708{ 2649{
1709#if EV_MULTIPLICITY
1710 struct ev_loop *loop = ev_default_loop_ptr;
1711#endif
1712
1713 ev_default_loop_ptr = 0;
1714
1715#ifndef _WIN32
1716 ev_ref (EV_A); /* child watcher */
1717 ev_signal_stop (EV_A_ &childev);
1718#endif
1719
1720 loop_destroy (EV_A);
1721}
1722
1723void
1724ev_default_fork (void)
1725{
1726#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr;
1728#endif
1729
1730 postfork = 1; /* must be in line with ev_loop_fork */ 2650 postfork = 1; /* must be in line with ev_default_fork */
1731} 2651}
1732 2652
1733/*****************************************************************************/ 2653/*****************************************************************************/
1734 2654
1735void 2655void
1736ev_invoke (EV_P_ void *w, int revents) 2656ev_invoke (EV_P_ void *w, int revents)
1737{ 2657{
1738 EV_CB_INVOKE ((W)w, revents); 2658 EV_CB_INVOKE ((W)w, revents);
1739} 2659}
1740 2660
1741inline_speed void 2661unsigned int
1742call_pending (EV_P) 2662ev_pending_count (EV_P)
2663{
2664 int pri;
2665 unsigned int count = 0;
2666
2667 for (pri = NUMPRI; pri--; )
2668 count += pendingcnt [pri];
2669
2670 return count;
2671}
2672
2673void noinline
2674ev_invoke_pending (EV_P)
1743{ 2675{
1744 int pri; 2676 int pri;
1745 2677
1746 for (pri = NUMPRI; pri--; ) 2678 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2679 while (pendingcnt [pri])
1748 { 2680 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2681 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2682
1751 if (expect_true (p->w))
1752 {
1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1754
1755 p->w->pending = 0; 2683 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2684 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2685 EV_FREQUENT_CHECK;
1758 }
1759 } 2686 }
1760} 2687}
1761 2688
1762#if EV_IDLE_ENABLE 2689#if EV_IDLE_ENABLE
2690/* make idle watchers pending. this handles the "call-idle */
2691/* only when higher priorities are idle" logic */
1763inline_size void 2692inline_size void
1764idle_reify (EV_P) 2693idle_reify (EV_P)
1765{ 2694{
1766 if (expect_false (idleall)) 2695 if (expect_false (idleall))
1767 { 2696 {
… …
1780 } 2709 }
1781 } 2710 }
1782} 2711}
1783#endif 2712#endif
1784 2713
2714/* make timers pending */
1785inline_size void 2715inline_size void
1786timers_reify (EV_P) 2716timers_reify (EV_P)
1787{ 2717{
1788 EV_FREQUENT_CHECK; 2718 EV_FREQUENT_CHECK;
1789 2719
… …
1813 EV_FREQUENT_CHECK; 2743 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2744 feed_reverse (EV_A_ (W)w);
1815 } 2745 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2746 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2747
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2748 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2749 }
1820} 2750}
1821 2751
1822#if EV_PERIODIC_ENABLE 2752#if EV_PERIODIC_ENABLE
2753
2754static void noinline
2755periodic_recalc (EV_P_ ev_periodic *w)
2756{
2757 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2758 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2759
2760 /* the above almost always errs on the low side */
2761 while (at <= ev_rt_now)
2762 {
2763 ev_tstamp nat = at + w->interval;
2764
2765 /* when resolution fails us, we use ev_rt_now */
2766 if (expect_false (nat == at))
2767 {
2768 at = ev_rt_now;
2769 break;
2770 }
2771
2772 at = nat;
2773 }
2774
2775 ev_at (w) = at;
2776}
2777
2778/* make periodics pending */
1823inline_size void 2779inline_size void
1824periodics_reify (EV_P) 2780periodics_reify (EV_P)
1825{ 2781{
1826 EV_FREQUENT_CHECK; 2782 EV_FREQUENT_CHECK;
1827 2783
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2801 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2802 downheap (periodics, periodiccnt, HEAP0);
1847 } 2803 }
1848 else if (w->interval) 2804 else if (w->interval)
1849 { 2805 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2806 periodic_recalc (EV_A_ w);
1851 /* if next trigger time is not sufficiently in the future, put it there */
1852 /* this might happen because of floating point inexactness */
1853 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1854 {
1855 ev_at (w) += w->interval;
1856
1857 /* if interval is unreasonably low we might still have a time in the past */
1858 /* so correct this. this will make the periodic very inexact, but the user */
1859 /* has effectively asked to get triggered more often than possible */
1860 if (ev_at (w) < ev_rt_now)
1861 ev_at (w) = ev_rt_now;
1862 }
1863
1864 ANHE_at_cache (periodics [HEAP0]); 2807 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2808 downheap (periodics, periodiccnt, HEAP0);
1866 } 2809 }
1867 else 2810 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2811 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2817
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2818 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2819 }
1877} 2820}
1878 2821
2822/* simply recalculate all periodics */
2823/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2824static void noinline ecb_cold
1880periodics_reschedule (EV_P) 2825periodics_reschedule (EV_P)
1881{ 2826{
1882 int i; 2827 int i;
1883 2828
1884 /* adjust periodics after time jump */ 2829 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2832 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2833
1889 if (w->reschedule_cb) 2834 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2835 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2836 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2837 periodic_recalc (EV_A_ w);
1893 2838
1894 ANHE_at_cache (periodics [i]); 2839 ANHE_at_cache (periodics [i]);
1895 } 2840 }
1896 2841
1897 reheap (periodics, periodiccnt); 2842 reheap (periodics, periodiccnt);
1898} 2843}
1899#endif 2844#endif
1900 2845
2846/* adjust all timers by a given offset */
1901static void noinline 2847static void noinline ecb_cold
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2848timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2849{
1904 int i; 2850 int i;
1905 2851
1906 for (i = 0; i < timercnt; ++i) 2852 for (i = 0; i < timercnt; ++i)
… …
1909 ANHE_w (*he)->at += adjust; 2855 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2856 ANHE_at_cache (*he);
1911 } 2857 }
1912} 2858}
1913 2859
2860/* fetch new monotonic and realtime times from the kernel */
2861/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2862inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2863time_update (EV_P_ ev_tstamp max_block)
1916{ 2864{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2865#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2866 if (expect_true (have_monotonic))
1921 { 2867 {
2868 int i;
1922 ev_tstamp odiff = rtmn_diff; 2869 ev_tstamp odiff = rtmn_diff;
1923 2870
1924 mn_now = get_clock (); 2871 mn_now = get_clock ();
1925 2872
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2873 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1942 * doesn't hurt either as we only do this on time-jumps or 2889 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 2890 * in the unlikely event of having been preempted here.
1944 */ 2891 */
1945 for (i = 4; --i; ) 2892 for (i = 4; --i; )
1946 { 2893 {
2894 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 2895 rtmn_diff = ev_rt_now - mn_now;
1948 2896
2897 diff = odiff - rtmn_diff;
2898
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2899 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 2900 return; /* all is well */
1951 2901
1952 ev_rt_now = ev_time (); 2902 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 2903 mn_now = get_clock ();
1954 now_floor = mn_now; 2904 now_floor = mn_now;
… …
1976 2926
1977 mn_now = ev_rt_now; 2927 mn_now = ev_rt_now;
1978 } 2928 }
1979} 2929}
1980 2930
1981static int loop_done;
1982
1983void 2931void
1984ev_loop (EV_P_ int flags) 2932ev_run (EV_P_ int flags)
1985{ 2933{
2934#if EV_FEATURE_API
2935 ++loop_depth;
2936#endif
2937
2938 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2939
1986 loop_done = EVUNLOOP_CANCEL; 2940 loop_done = EVBREAK_CANCEL;
1987 2941
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2942 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 2943
1990 do 2944 do
1991 { 2945 {
1992#if EV_VERIFY >= 2 2946#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 2947 ev_verify (EV_A);
1994#endif 2948#endif
1995 2949
1996#ifndef _WIN32 2950#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 2951 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 2952 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 2960 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 2961 if (expect_false (postfork))
2008 if (forkcnt) 2962 if (forkcnt)
2009 { 2963 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2964 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 2965 EV_INVOKE_PENDING;
2012 } 2966 }
2013#endif 2967#endif
2014 2968
2969#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 2970 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 2971 if (expect_false (preparecnt))
2017 { 2972 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2973 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 2974 EV_INVOKE_PENDING;
2020 } 2975 }
2976#endif
2977
2978 if (expect_false (loop_done))
2979 break;
2021 2980
2022 /* we might have forked, so reify kernel state if necessary */ 2981 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 2982 if (expect_false (postfork))
2024 loop_fork (EV_A); 2983 loop_fork (EV_A);
2025 2984
… …
2029 /* calculate blocking time */ 2988 /* calculate blocking time */
2030 { 2989 {
2031 ev_tstamp waittime = 0.; 2990 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 2991 ev_tstamp sleeptime = 0.;
2033 2992
2993 /* remember old timestamp for io_blocktime calculation */
2994 ev_tstamp prev_mn_now = mn_now;
2995
2996 /* update time to cancel out callback processing overhead */
2997 time_update (EV_A_ 1e100);
2998
2999 /* from now on, we want a pipe-wake-up */
3000 pipe_write_wanted = 1;
3001
3002 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3003
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3004 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 3005 {
2036 /* update time to cancel out callback processing overhead */
2037 time_update (EV_A_ 1e100);
2038
2039 waittime = MAX_BLOCKTIME; 3006 waittime = MAX_BLOCKTIME;
2040 3007
2041 if (timercnt) 3008 if (timercnt)
2042 { 3009 {
2043 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3010 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2044 if (waittime > to) waittime = to; 3011 if (waittime > to) waittime = to;
2045 } 3012 }
2046 3013
2047#if EV_PERIODIC_ENABLE 3014#if EV_PERIODIC_ENABLE
2048 if (periodiccnt) 3015 if (periodiccnt)
2049 { 3016 {
2050 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3017 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2051 if (waittime > to) waittime = to; 3018 if (waittime > to) waittime = to;
2052 } 3019 }
2053#endif 3020#endif
2054 3021
3022 /* don't let timeouts decrease the waittime below timeout_blocktime */
2055 if (expect_false (waittime < timeout_blocktime)) 3023 if (expect_false (waittime < timeout_blocktime))
2056 waittime = timeout_blocktime; 3024 waittime = timeout_blocktime;
2057 3025
2058 sleeptime = waittime - backend_fudge; 3026 /* at this point, we NEED to wait, so we have to ensure */
3027 /* to pass a minimum nonzero value to the backend */
3028 if (expect_false (waittime < backend_mintime))
3029 waittime = backend_mintime;
2059 3030
3031 /* extra check because io_blocktime is commonly 0 */
2060 if (expect_true (sleeptime > io_blocktime)) 3032 if (expect_false (io_blocktime))
2061 sleeptime = io_blocktime;
2062
2063 if (sleeptime)
2064 { 3033 {
3034 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3035
3036 if (sleeptime > waittime - backend_mintime)
3037 sleeptime = waittime - backend_mintime;
3038
3039 if (expect_true (sleeptime > 0.))
3040 {
2065 ev_sleep (sleeptime); 3041 ev_sleep (sleeptime);
2066 waittime -= sleeptime; 3042 waittime -= sleeptime;
3043 }
2067 } 3044 }
2068 } 3045 }
2069 3046
3047#if EV_FEATURE_API
2070 ++loop_count; 3048 ++loop_count;
3049#endif
3050 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2071 backend_poll (EV_A_ waittime); 3051 backend_poll (EV_A_ waittime);
3052 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3053
3054 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3055
3056 if (pipe_write_skipped)
3057 {
3058 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3059 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3060 }
3061
2072 3062
2073 /* update ev_rt_now, do magic */ 3063 /* update ev_rt_now, do magic */
2074 time_update (EV_A_ waittime + sleeptime); 3064 time_update (EV_A_ waittime + sleeptime);
2075 } 3065 }
2076 3066
… …
2083#if EV_IDLE_ENABLE 3073#if EV_IDLE_ENABLE
2084 /* queue idle watchers unless other events are pending */ 3074 /* queue idle watchers unless other events are pending */
2085 idle_reify (EV_A); 3075 idle_reify (EV_A);
2086#endif 3076#endif
2087 3077
3078#if EV_CHECK_ENABLE
2088 /* queue check watchers, to be executed first */ 3079 /* queue check watchers, to be executed first */
2089 if (expect_false (checkcnt)) 3080 if (expect_false (checkcnt))
2090 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3081 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3082#endif
2091 3083
2092 call_pending (EV_A); 3084 EV_INVOKE_PENDING;
2093 } 3085 }
2094 while (expect_true ( 3086 while (expect_true (
2095 activecnt 3087 activecnt
2096 && !loop_done 3088 && !loop_done
2097 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3089 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2098 )); 3090 ));
2099 3091
2100 if (loop_done == EVUNLOOP_ONE) 3092 if (loop_done == EVBREAK_ONE)
2101 loop_done = EVUNLOOP_CANCEL; 3093 loop_done = EVBREAK_CANCEL;
3094
3095#if EV_FEATURE_API
3096 --loop_depth;
3097#endif
2102} 3098}
2103 3099
2104void 3100void
2105ev_unloop (EV_P_ int how) 3101ev_break (EV_P_ int how)
2106{ 3102{
2107 loop_done = how; 3103 loop_done = how;
2108} 3104}
2109 3105
2110void 3106void
… …
2137 ev_tstamp mn_prev = mn_now; 3133 ev_tstamp mn_prev = mn_now;
2138 3134
2139 ev_now_update (EV_A); 3135 ev_now_update (EV_A);
2140 timers_reschedule (EV_A_ mn_now - mn_prev); 3136 timers_reschedule (EV_A_ mn_now - mn_prev);
2141#if EV_PERIODIC_ENABLE 3137#if EV_PERIODIC_ENABLE
3138 /* TODO: really do this? */
2142 periodics_reschedule (EV_A); 3139 periodics_reschedule (EV_A);
2143#endif 3140#endif
2144} 3141}
2145 3142
2146/*****************************************************************************/ 3143/*****************************************************************************/
3144/* singly-linked list management, used when the expected list length is short */
2147 3145
2148inline_size void 3146inline_size void
2149wlist_add (WL *head, WL elem) 3147wlist_add (WL *head, WL elem)
2150{ 3148{
2151 elem->next = *head; 3149 elem->next = *head;
… …
2155inline_size void 3153inline_size void
2156wlist_del (WL *head, WL elem) 3154wlist_del (WL *head, WL elem)
2157{ 3155{
2158 while (*head) 3156 while (*head)
2159 { 3157 {
2160 if (*head == elem) 3158 if (expect_true (*head == elem))
2161 { 3159 {
2162 *head = elem->next; 3160 *head = elem->next;
2163 return; 3161 break;
2164 } 3162 }
2165 3163
2166 head = &(*head)->next; 3164 head = &(*head)->next;
2167 } 3165 }
2168} 3166}
2169 3167
3168/* internal, faster, version of ev_clear_pending */
2170inline_speed void 3169inline_speed void
2171clear_pending (EV_P_ W w) 3170clear_pending (EV_P_ W w)
2172{ 3171{
2173 if (w->pending) 3172 if (w->pending)
2174 { 3173 {
2175 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3174 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2176 w->pending = 0; 3175 w->pending = 0;
2177 } 3176 }
2178} 3177}
2179 3178
2180int 3179int
… …
2184 int pending = w_->pending; 3183 int pending = w_->pending;
2185 3184
2186 if (expect_true (pending)) 3185 if (expect_true (pending))
2187 { 3186 {
2188 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3187 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3188 p->w = (W)&pending_w;
2189 w_->pending = 0; 3189 w_->pending = 0;
2190 p->w = 0;
2191 return p->events; 3190 return p->events;
2192 } 3191 }
2193 else 3192 else
2194 return 0; 3193 return 0;
2195} 3194}
2196 3195
2197inline_size void 3196inline_size void
2198pri_adjust (EV_P_ W w) 3197pri_adjust (EV_P_ W w)
2199{ 3198{
2200 int pri = w->priority; 3199 int pri = ev_priority (w);
2201 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3200 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2202 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3201 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2203 w->priority = pri; 3202 ev_set_priority (w, pri);
2204} 3203}
2205 3204
2206inline_speed void 3205inline_speed void
2207ev_start (EV_P_ W w, int active) 3206ev_start (EV_P_ W w, int active)
2208{ 3207{
… …
2227 3226
2228 if (expect_false (ev_is_active (w))) 3227 if (expect_false (ev_is_active (w)))
2229 return; 3228 return;
2230 3229
2231 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3230 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2232 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3231 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2233 3232
2234 EV_FREQUENT_CHECK; 3233 EV_FREQUENT_CHECK;
2235 3234
2236 ev_start (EV_A_ (W)w, 1); 3235 ev_start (EV_A_ (W)w, 1);
2237 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3236 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2238 wlist_add (&anfds[fd].head, (WL)w); 3237 wlist_add (&anfds[fd].head, (WL)w);
2239 3238
2240 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3239 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2241 w->events &= ~EV__IOFDSET; 3240 w->events &= ~EV__IOFDSET;
2242 3241
2243 EV_FREQUENT_CHECK; 3242 EV_FREQUENT_CHECK;
2244} 3243}
2245 3244
… …
2255 EV_FREQUENT_CHECK; 3254 EV_FREQUENT_CHECK;
2256 3255
2257 wlist_del (&anfds[w->fd].head, (WL)w); 3256 wlist_del (&anfds[w->fd].head, (WL)w);
2258 ev_stop (EV_A_ (W)w); 3257 ev_stop (EV_A_ (W)w);
2259 3258
2260 fd_change (EV_A_ w->fd, 1); 3259 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2261 3260
2262 EV_FREQUENT_CHECK; 3261 EV_FREQUENT_CHECK;
2263} 3262}
2264 3263
2265void noinline 3264void noinline
… …
2307 timers [active] = timers [timercnt + HEAP0]; 3306 timers [active] = timers [timercnt + HEAP0];
2308 adjustheap (timers, timercnt, active); 3307 adjustheap (timers, timercnt, active);
2309 } 3308 }
2310 } 3309 }
2311 3310
2312 EV_FREQUENT_CHECK;
2313
2314 ev_at (w) -= mn_now; 3311 ev_at (w) -= mn_now;
2315 3312
2316 ev_stop (EV_A_ (W)w); 3313 ev_stop (EV_A_ (W)w);
3314
3315 EV_FREQUENT_CHECK;
2317} 3316}
2318 3317
2319void noinline 3318void noinline
2320ev_timer_again (EV_P_ ev_timer *w) 3319ev_timer_again (EV_P_ ev_timer *w)
2321{ 3320{
2322 EV_FREQUENT_CHECK; 3321 EV_FREQUENT_CHECK;
3322
3323 clear_pending (EV_A_ (W)w);
2323 3324
2324 if (ev_is_active (w)) 3325 if (ev_is_active (w))
2325 { 3326 {
2326 if (w->repeat) 3327 if (w->repeat)
2327 { 3328 {
… …
2339 } 3340 }
2340 3341
2341 EV_FREQUENT_CHECK; 3342 EV_FREQUENT_CHECK;
2342} 3343}
2343 3344
3345ev_tstamp
3346ev_timer_remaining (EV_P_ ev_timer *w)
3347{
3348 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3349}
3350
2344#if EV_PERIODIC_ENABLE 3351#if EV_PERIODIC_ENABLE
2345void noinline 3352void noinline
2346ev_periodic_start (EV_P_ ev_periodic *w) 3353ev_periodic_start (EV_P_ ev_periodic *w)
2347{ 3354{
2348 if (expect_false (ev_is_active (w))) 3355 if (expect_false (ev_is_active (w)))
… …
2351 if (w->reschedule_cb) 3358 if (w->reschedule_cb)
2352 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3359 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2353 else if (w->interval) 3360 else if (w->interval)
2354 { 3361 {
2355 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3362 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2356 /* this formula differs from the one in periodic_reify because we do not always round up */ 3363 periodic_recalc (EV_A_ w);
2357 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2358 } 3364 }
2359 else 3365 else
2360 ev_at (w) = w->offset; 3366 ev_at (w) = w->offset;
2361 3367
2362 EV_FREQUENT_CHECK; 3368 EV_FREQUENT_CHECK;
… …
2394 periodics [active] = periodics [periodiccnt + HEAP0]; 3400 periodics [active] = periodics [periodiccnt + HEAP0];
2395 adjustheap (periodics, periodiccnt, active); 3401 adjustheap (periodics, periodiccnt, active);
2396 } 3402 }
2397 } 3403 }
2398 3404
2399 EV_FREQUENT_CHECK;
2400
2401 ev_stop (EV_A_ (W)w); 3405 ev_stop (EV_A_ (W)w);
3406
3407 EV_FREQUENT_CHECK;
2402} 3408}
2403 3409
2404void noinline 3410void noinline
2405ev_periodic_again (EV_P_ ev_periodic *w) 3411ev_periodic_again (EV_P_ ev_periodic *w)
2406{ 3412{
… …
2412 3418
2413#ifndef SA_RESTART 3419#ifndef SA_RESTART
2414# define SA_RESTART 0 3420# define SA_RESTART 0
2415#endif 3421#endif
2416 3422
3423#if EV_SIGNAL_ENABLE
3424
2417void noinline 3425void noinline
2418ev_signal_start (EV_P_ ev_signal *w) 3426ev_signal_start (EV_P_ ev_signal *w)
2419{ 3427{
2420#if EV_MULTIPLICITY
2421 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2422#endif
2423 if (expect_false (ev_is_active (w))) 3428 if (expect_false (ev_is_active (w)))
2424 return; 3429 return;
2425 3430
2426 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3431 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2427 3432
2428 evpipe_init (EV_A); 3433#if EV_MULTIPLICITY
3434 assert (("libev: a signal must not be attached to two different loops",
3435 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2429 3436
2430 EV_FREQUENT_CHECK; 3437 signals [w->signum - 1].loop = EV_A;
3438#endif
2431 3439
3440 EV_FREQUENT_CHECK;
3441
3442#if EV_USE_SIGNALFD
3443 if (sigfd == -2)
2432 { 3444 {
2433#ifndef _WIN32 3445 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2434 sigset_t full, prev; 3446 if (sigfd < 0 && errno == EINVAL)
2435 sigfillset (&full); 3447 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2436 sigprocmask (SIG_SETMASK, &full, &prev);
2437#endif
2438 3448
2439 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3449 if (sigfd >= 0)
3450 {
3451 fd_intern (sigfd); /* doing it twice will not hurt */
2440 3452
2441#ifndef _WIN32 3453 sigemptyset (&sigfd_set);
2442 sigprocmask (SIG_SETMASK, &prev, 0); 3454
2443#endif 3455 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3456 ev_set_priority (&sigfd_w, EV_MAXPRI);
3457 ev_io_start (EV_A_ &sigfd_w);
3458 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3459 }
2444 } 3460 }
3461
3462 if (sigfd >= 0)
3463 {
3464 /* TODO: check .head */
3465 sigaddset (&sigfd_set, w->signum);
3466 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3467
3468 signalfd (sigfd, &sigfd_set, 0);
3469 }
3470#endif
2445 3471
2446 ev_start (EV_A_ (W)w, 1); 3472 ev_start (EV_A_ (W)w, 1);
2447 wlist_add (&signals [w->signum - 1].head, (WL)w); 3473 wlist_add (&signals [w->signum - 1].head, (WL)w);
2448 3474
2449 if (!((WL)w)->next) 3475 if (!((WL)w)->next)
3476# if EV_USE_SIGNALFD
3477 if (sigfd < 0) /*TODO*/
3478# endif
2450 { 3479 {
2451#if _WIN32 3480# ifdef _WIN32
3481 evpipe_init (EV_A);
3482
2452 signal (w->signum, ev_sighandler); 3483 signal (w->signum, ev_sighandler);
2453#else 3484# else
2454 struct sigaction sa; 3485 struct sigaction sa;
3486
3487 evpipe_init (EV_A);
3488
2455 sa.sa_handler = ev_sighandler; 3489 sa.sa_handler = ev_sighandler;
2456 sigfillset (&sa.sa_mask); 3490 sigfillset (&sa.sa_mask);
2457 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3491 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2458 sigaction (w->signum, &sa, 0); 3492 sigaction (w->signum, &sa, 0);
3493
3494 if (origflags & EVFLAG_NOSIGMASK)
3495 {
3496 sigemptyset (&sa.sa_mask);
3497 sigaddset (&sa.sa_mask, w->signum);
3498 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3499 }
2459#endif 3500#endif
2460 } 3501 }
2461 3502
2462 EV_FREQUENT_CHECK; 3503 EV_FREQUENT_CHECK;
2463} 3504}
2464 3505
2465void noinline 3506void noinline
… …
2473 3514
2474 wlist_del (&signals [w->signum - 1].head, (WL)w); 3515 wlist_del (&signals [w->signum - 1].head, (WL)w);
2475 ev_stop (EV_A_ (W)w); 3516 ev_stop (EV_A_ (W)w);
2476 3517
2477 if (!signals [w->signum - 1].head) 3518 if (!signals [w->signum - 1].head)
3519 {
3520#if EV_MULTIPLICITY
3521 signals [w->signum - 1].loop = 0; /* unattach from signal */
3522#endif
3523#if EV_USE_SIGNALFD
3524 if (sigfd >= 0)
3525 {
3526 sigset_t ss;
3527
3528 sigemptyset (&ss);
3529 sigaddset (&ss, w->signum);
3530 sigdelset (&sigfd_set, w->signum);
3531
3532 signalfd (sigfd, &sigfd_set, 0);
3533 sigprocmask (SIG_UNBLOCK, &ss, 0);
3534 }
3535 else
3536#endif
2478 signal (w->signum, SIG_DFL); 3537 signal (w->signum, SIG_DFL);
3538 }
2479 3539
2480 EV_FREQUENT_CHECK; 3540 EV_FREQUENT_CHECK;
2481} 3541}
3542
3543#endif
3544
3545#if EV_CHILD_ENABLE
2482 3546
2483void 3547void
2484ev_child_start (EV_P_ ev_child *w) 3548ev_child_start (EV_P_ ev_child *w)
2485{ 3549{
2486#if EV_MULTIPLICITY 3550#if EV_MULTIPLICITY
… …
2490 return; 3554 return;
2491 3555
2492 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2493 3557
2494 ev_start (EV_A_ (W)w, 1); 3558 ev_start (EV_A_ (W)w, 1);
2495 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3559 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2496 3560
2497 EV_FREQUENT_CHECK; 3561 EV_FREQUENT_CHECK;
2498} 3562}
2499 3563
2500void 3564void
… …
2504 if (expect_false (!ev_is_active (w))) 3568 if (expect_false (!ev_is_active (w)))
2505 return; 3569 return;
2506 3570
2507 EV_FREQUENT_CHECK; 3571 EV_FREQUENT_CHECK;
2508 3572
2509 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3573 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2510 ev_stop (EV_A_ (W)w); 3574 ev_stop (EV_A_ (W)w);
2511 3575
2512 EV_FREQUENT_CHECK; 3576 EV_FREQUENT_CHECK;
2513} 3577}
3578
3579#endif
2514 3580
2515#if EV_STAT_ENABLE 3581#if EV_STAT_ENABLE
2516 3582
2517# ifdef _WIN32 3583# ifdef _WIN32
2518# undef lstat 3584# undef lstat
… …
2524#define MIN_STAT_INTERVAL 0.1074891 3590#define MIN_STAT_INTERVAL 0.1074891
2525 3591
2526static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3592static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2527 3593
2528#if EV_USE_INOTIFY 3594#if EV_USE_INOTIFY
2529# define EV_INOTIFY_BUFSIZE 8192 3595
3596/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3597# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2530 3598
2531static void noinline 3599static void noinline
2532infy_add (EV_P_ ev_stat *w) 3600infy_add (EV_P_ ev_stat *w)
2533{ 3601{
2534 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); 3602 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);
2535 3603
2536 if (w->wd < 0) 3604 if (w->wd >= 0)
3605 {
3606 struct statfs sfs;
3607
3608 /* now local changes will be tracked by inotify, but remote changes won't */
3609 /* unless the filesystem is known to be local, we therefore still poll */
3610 /* also do poll on <2.6.25, but with normal frequency */
3611
3612 if (!fs_2625)
3613 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3614 else if (!statfs (w->path, &sfs)
3615 && (sfs.f_type == 0x1373 /* devfs */
3616 || sfs.f_type == 0xEF53 /* ext2/3 */
3617 || sfs.f_type == 0x3153464a /* jfs */
3618 || sfs.f_type == 0x52654973 /* reiser3 */
3619 || sfs.f_type == 0x01021994 /* tempfs */
3620 || sfs.f_type == 0x58465342 /* xfs */))
3621 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3622 else
3623 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2537 { 3624 }
3625 else
3626 {
3627 /* can't use inotify, continue to stat */
2538 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3628 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2539 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2540 3629
2541 /* monitor some parent directory for speedup hints */ 3630 /* if path is not there, monitor some parent directory for speedup hints */
2542 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3631 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2543 /* but an efficiency issue only */ 3632 /* but an efficiency issue only */
2544 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3633 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2545 { 3634 {
2546 char path [4096]; 3635 char path [4096];
… …
2556 if (!pend || pend == path) 3645 if (!pend || pend == path)
2557 break; 3646 break;
2558 3647
2559 *pend = 0; 3648 *pend = 0;
2560 w->wd = inotify_add_watch (fs_fd, path, mask); 3649 w->wd = inotify_add_watch (fs_fd, path, mask);
2561 } 3650 }
2562 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3651 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2563 } 3652 }
2564 } 3653 }
2565 3654
2566 if (w->wd >= 0) 3655 if (w->wd >= 0)
2567 {
2568 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3656 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2569 3657
2570 /* now local changes will be tracked by inotify, but remote changes won't */ 3658 /* now re-arm timer, if required */
2571 /* unless the filesystem it known to be local, we therefore still poll */ 3659 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2572 /* also do poll on <2.6.25, but with normal frequency */
2573 struct statfs sfs;
2574
2575 if (fs_2625 && !statfs (w->path, &sfs))
2576 if (sfs.f_type == 0x1373 /* devfs */
2577 || sfs.f_type == 0xEF53 /* ext2/3 */
2578 || sfs.f_type == 0x3153464a /* jfs */
2579 || sfs.f_type == 0x52654973 /* reiser3 */
2580 || sfs.f_type == 0x01021994 /* tempfs */
2581 || sfs.f_type == 0x58465342 /* xfs */)
2582 return;
2583
2584 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2585 ev_timer_again (EV_A_ &w->timer); 3660 ev_timer_again (EV_A_ &w->timer);
2586 } 3661 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2587} 3662}
2588 3663
2589static void noinline 3664static void noinline
2590infy_del (EV_P_ ev_stat *w) 3665infy_del (EV_P_ ev_stat *w)
2591{ 3666{
… …
2594 3669
2595 if (wd < 0) 3670 if (wd < 0)
2596 return; 3671 return;
2597 3672
2598 w->wd = -2; 3673 w->wd = -2;
2599 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3674 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2600 wlist_del (&fs_hash [slot].head, (WL)w); 3675 wlist_del (&fs_hash [slot].head, (WL)w);
2601 3676
2602 /* remove this watcher, if others are watching it, they will rearm */ 3677 /* remove this watcher, if others are watching it, they will rearm */
2603 inotify_rm_watch (fs_fd, wd); 3678 inotify_rm_watch (fs_fd, wd);
2604} 3679}
… …
2606static void noinline 3681static void noinline
2607infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3682infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2608{ 3683{
2609 if (slot < 0) 3684 if (slot < 0)
2610 /* overflow, need to check for all hash slots */ 3685 /* overflow, need to check for all hash slots */
2611 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3686 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2612 infy_wd (EV_A_ slot, wd, ev); 3687 infy_wd (EV_A_ slot, wd, ev);
2613 else 3688 else
2614 { 3689 {
2615 WL w_; 3690 WL w_;
2616 3691
2617 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3692 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2618 { 3693 {
2619 ev_stat *w = (ev_stat *)w_; 3694 ev_stat *w = (ev_stat *)w_;
2620 w_ = w_->next; /* lets us remove this watcher and all before it */ 3695 w_ = w_->next; /* lets us remove this watcher and all before it */
2621 3696
2622 if (w->wd == wd || wd == -1) 3697 if (w->wd == wd || wd == -1)
2623 { 3698 {
2624 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3699 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2625 { 3700 {
2626 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3701 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2627 w->wd = -1; 3702 w->wd = -1;
2628 infy_add (EV_A_ w); /* re-add, no matter what */ 3703 infy_add (EV_A_ w); /* re-add, no matter what */
2629 } 3704 }
2630 3705
2631 stat_timer_cb (EV_A_ &w->timer, 0); 3706 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2636 3711
2637static void 3712static void
2638infy_cb (EV_P_ ev_io *w, int revents) 3713infy_cb (EV_P_ ev_io *w, int revents)
2639{ 3714{
2640 char buf [EV_INOTIFY_BUFSIZE]; 3715 char buf [EV_INOTIFY_BUFSIZE];
2641 struct inotify_event *ev = (struct inotify_event *)buf;
2642 int ofs; 3716 int ofs;
2643 int len = read (fs_fd, buf, sizeof (buf)); 3717 int len = read (fs_fd, buf, sizeof (buf));
2644 3718
2645 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3719 for (ofs = 0; ofs < len; )
3720 {
3721 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2646 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3722 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3723 ofs += sizeof (struct inotify_event) + ev->len;
3724 }
2647} 3725}
2648 3726
2649inline_size void 3727inline_size void ecb_cold
2650check_2625 (EV_P) 3728ev_check_2625 (EV_P)
2651{ 3729{
2652 /* kernels < 2.6.25 are borked 3730 /* kernels < 2.6.25 are borked
2653 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3731 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2654 */ 3732 */
2655 struct utsname buf; 3733 if (ev_linux_version () < 0x020619)
2656 int major, minor, micro;
2657
2658 if (uname (&buf))
2659 return; 3734 return;
2660 3735
2661 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2662 return;
2663
2664 if (major < 2
2665 || (major == 2 && minor < 6)
2666 || (major == 2 && minor == 6 && micro < 25))
2667 return;
2668
2669 fs_2625 = 1; 3736 fs_2625 = 1;
3737}
3738
3739inline_size int
3740infy_newfd (void)
3741{
3742#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3743 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3744 if (fd >= 0)
3745 return fd;
3746#endif
3747 return inotify_init ();
2670} 3748}
2671 3749
2672inline_size void 3750inline_size void
2673infy_init (EV_P) 3751infy_init (EV_P)
2674{ 3752{
2675 if (fs_fd != -2) 3753 if (fs_fd != -2)
2676 return; 3754 return;
2677 3755
2678 fs_fd = -1; 3756 fs_fd = -1;
2679 3757
2680 check_2625 (EV_A); 3758 ev_check_2625 (EV_A);
2681 3759
2682 fs_fd = inotify_init (); 3760 fs_fd = infy_newfd ();
2683 3761
2684 if (fs_fd >= 0) 3762 if (fs_fd >= 0)
2685 { 3763 {
3764 fd_intern (fs_fd);
2686 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3765 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2687 ev_set_priority (&fs_w, EV_MAXPRI); 3766 ev_set_priority (&fs_w, EV_MAXPRI);
2688 ev_io_start (EV_A_ &fs_w); 3767 ev_io_start (EV_A_ &fs_w);
3768 ev_unref (EV_A);
2689 } 3769 }
2690} 3770}
2691 3771
2692inline_size void 3772inline_size void
2693infy_fork (EV_P) 3773infy_fork (EV_P)
… …
2695 int slot; 3775 int slot;
2696 3776
2697 if (fs_fd < 0) 3777 if (fs_fd < 0)
2698 return; 3778 return;
2699 3779
3780 ev_ref (EV_A);
3781 ev_io_stop (EV_A_ &fs_w);
2700 close (fs_fd); 3782 close (fs_fd);
2701 fs_fd = inotify_init (); 3783 fs_fd = infy_newfd ();
2702 3784
3785 if (fs_fd >= 0)
3786 {
3787 fd_intern (fs_fd);
3788 ev_io_set (&fs_w, fs_fd, EV_READ);
3789 ev_io_start (EV_A_ &fs_w);
3790 ev_unref (EV_A);
3791 }
3792
2703 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3793 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2704 { 3794 {
2705 WL w_ = fs_hash [slot].head; 3795 WL w_ = fs_hash [slot].head;
2706 fs_hash [slot].head = 0; 3796 fs_hash [slot].head = 0;
2707 3797
2708 while (w_) 3798 while (w_)
… …
2713 w->wd = -1; 3803 w->wd = -1;
2714 3804
2715 if (fs_fd >= 0) 3805 if (fs_fd >= 0)
2716 infy_add (EV_A_ w); /* re-add, no matter what */ 3806 infy_add (EV_A_ w); /* re-add, no matter what */
2717 else 3807 else
3808 {
3809 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3810 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2718 ev_timer_again (EV_A_ &w->timer); 3811 ev_timer_again (EV_A_ &w->timer);
3812 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3813 }
2719 } 3814 }
2720 } 3815 }
2721} 3816}
2722 3817
2723#endif 3818#endif
… …
2740static void noinline 3835static void noinline
2741stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3836stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2742{ 3837{
2743 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3838 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2744 3839
2745 /* we copy this here each the time so that */ 3840 ev_statdata prev = w->attr;
2746 /* prev has the old value when the callback gets invoked */
2747 w->prev = w->attr;
2748 ev_stat_stat (EV_A_ w); 3841 ev_stat_stat (EV_A_ w);
2749 3842
2750 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3843 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2751 if ( 3844 if (
2752 w->prev.st_dev != w->attr.st_dev 3845 prev.st_dev != w->attr.st_dev
2753 || w->prev.st_ino != w->attr.st_ino 3846 || prev.st_ino != w->attr.st_ino
2754 || w->prev.st_mode != w->attr.st_mode 3847 || prev.st_mode != w->attr.st_mode
2755 || w->prev.st_nlink != w->attr.st_nlink 3848 || prev.st_nlink != w->attr.st_nlink
2756 || w->prev.st_uid != w->attr.st_uid 3849 || prev.st_uid != w->attr.st_uid
2757 || w->prev.st_gid != w->attr.st_gid 3850 || prev.st_gid != w->attr.st_gid
2758 || w->prev.st_rdev != w->attr.st_rdev 3851 || prev.st_rdev != w->attr.st_rdev
2759 || w->prev.st_size != w->attr.st_size 3852 || prev.st_size != w->attr.st_size
2760 || w->prev.st_atime != w->attr.st_atime 3853 || prev.st_atime != w->attr.st_atime
2761 || w->prev.st_mtime != w->attr.st_mtime 3854 || prev.st_mtime != w->attr.st_mtime
2762 || w->prev.st_ctime != w->attr.st_ctime 3855 || prev.st_ctime != w->attr.st_ctime
2763 ) { 3856 ) {
3857 /* we only update w->prev on actual differences */
3858 /* in case we test more often than invoke the callback, */
3859 /* to ensure that prev is always different to attr */
3860 w->prev = prev;
3861
2764 #if EV_USE_INOTIFY 3862 #if EV_USE_INOTIFY
2765 if (fs_fd >= 0) 3863 if (fs_fd >= 0)
2766 { 3864 {
2767 infy_del (EV_A_ w); 3865 infy_del (EV_A_ w);
2768 infy_add (EV_A_ w); 3866 infy_add (EV_A_ w);
… …
2793 3891
2794 if (fs_fd >= 0) 3892 if (fs_fd >= 0)
2795 infy_add (EV_A_ w); 3893 infy_add (EV_A_ w);
2796 else 3894 else
2797#endif 3895#endif
3896 {
2798 ev_timer_again (EV_A_ &w->timer); 3897 ev_timer_again (EV_A_ &w->timer);
3898 ev_unref (EV_A);
3899 }
2799 3900
2800 ev_start (EV_A_ (W)w, 1); 3901 ev_start (EV_A_ (W)w, 1);
2801 3902
2802 EV_FREQUENT_CHECK; 3903 EV_FREQUENT_CHECK;
2803} 3904}
… …
2812 EV_FREQUENT_CHECK; 3913 EV_FREQUENT_CHECK;
2813 3914
2814#if EV_USE_INOTIFY 3915#if EV_USE_INOTIFY
2815 infy_del (EV_A_ w); 3916 infy_del (EV_A_ w);
2816#endif 3917#endif
3918
3919 if (ev_is_active (&w->timer))
3920 {
3921 ev_ref (EV_A);
2817 ev_timer_stop (EV_A_ &w->timer); 3922 ev_timer_stop (EV_A_ &w->timer);
3923 }
2818 3924
2819 ev_stop (EV_A_ (W)w); 3925 ev_stop (EV_A_ (W)w);
2820 3926
2821 EV_FREQUENT_CHECK; 3927 EV_FREQUENT_CHECK;
2822} 3928}
… …
2867 3973
2868 EV_FREQUENT_CHECK; 3974 EV_FREQUENT_CHECK;
2869} 3975}
2870#endif 3976#endif
2871 3977
3978#if EV_PREPARE_ENABLE
2872void 3979void
2873ev_prepare_start (EV_P_ ev_prepare *w) 3980ev_prepare_start (EV_P_ ev_prepare *w)
2874{ 3981{
2875 if (expect_false (ev_is_active (w))) 3982 if (expect_false (ev_is_active (w)))
2876 return; 3983 return;
… …
2902 4009
2903 ev_stop (EV_A_ (W)w); 4010 ev_stop (EV_A_ (W)w);
2904 4011
2905 EV_FREQUENT_CHECK; 4012 EV_FREQUENT_CHECK;
2906} 4013}
4014#endif
2907 4015
4016#if EV_CHECK_ENABLE
2908void 4017void
2909ev_check_start (EV_P_ ev_check *w) 4018ev_check_start (EV_P_ ev_check *w)
2910{ 4019{
2911 if (expect_false (ev_is_active (w))) 4020 if (expect_false (ev_is_active (w)))
2912 return; 4021 return;
… …
2938 4047
2939 ev_stop (EV_A_ (W)w); 4048 ev_stop (EV_A_ (W)w);
2940 4049
2941 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
2942} 4051}
4052#endif
2943 4053
2944#if EV_EMBED_ENABLE 4054#if EV_EMBED_ENABLE
2945void noinline 4055void noinline
2946ev_embed_sweep (EV_P_ ev_embed *w) 4056ev_embed_sweep (EV_P_ ev_embed *w)
2947{ 4057{
2948 ev_loop (w->other, EVLOOP_NONBLOCK); 4058 ev_run (w->other, EVRUN_NOWAIT);
2949} 4059}
2950 4060
2951static void 4061static void
2952embed_io_cb (EV_P_ ev_io *io, int revents) 4062embed_io_cb (EV_P_ ev_io *io, int revents)
2953{ 4063{
2954 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4064 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2955 4065
2956 if (ev_cb (w)) 4066 if (ev_cb (w))
2957 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4067 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2958 else 4068 else
2959 ev_loop (w->other, EVLOOP_NONBLOCK); 4069 ev_run (w->other, EVRUN_NOWAIT);
2960} 4070}
2961 4071
2962static void 4072static void
2963embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4073embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2964{ 4074{
2965 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4075 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2966 4076
2967 { 4077 {
2968 struct ev_loop *loop = w->other; 4078 EV_P = w->other;
2969 4079
2970 while (fdchangecnt) 4080 while (fdchangecnt)
2971 { 4081 {
2972 fd_reify (EV_A); 4082 fd_reify (EV_A);
2973 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4083 ev_run (EV_A_ EVRUN_NOWAIT);
2974 } 4084 }
2975 } 4085 }
2976} 4086}
2977 4087
2978static void 4088static void
… …
2981 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4091 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2982 4092
2983 ev_embed_stop (EV_A_ w); 4093 ev_embed_stop (EV_A_ w);
2984 4094
2985 { 4095 {
2986 struct ev_loop *loop = w->other; 4096 EV_P = w->other;
2987 4097
2988 ev_loop_fork (EV_A); 4098 ev_loop_fork (EV_A);
2989 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4099 ev_run (EV_A_ EVRUN_NOWAIT);
2990 } 4100 }
2991 4101
2992 ev_embed_start (EV_A_ w); 4102 ev_embed_start (EV_A_ w);
2993} 4103}
2994 4104
… …
3005{ 4115{
3006 if (expect_false (ev_is_active (w))) 4116 if (expect_false (ev_is_active (w)))
3007 return; 4117 return;
3008 4118
3009 { 4119 {
3010 struct ev_loop *loop = w->other; 4120 EV_P = w->other;
3011 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4121 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3012 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4122 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3013 } 4123 }
3014 4124
3015 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
… …
3042 4152
3043 ev_io_stop (EV_A_ &w->io); 4153 ev_io_stop (EV_A_ &w->io);
3044 ev_prepare_stop (EV_A_ &w->prepare); 4154 ev_prepare_stop (EV_A_ &w->prepare);
3045 ev_fork_stop (EV_A_ &w->fork); 4155 ev_fork_stop (EV_A_ &w->fork);
3046 4156
4157 ev_stop (EV_A_ (W)w);
4158
3047 EV_FREQUENT_CHECK; 4159 EV_FREQUENT_CHECK;
3048} 4160}
3049#endif 4161#endif
3050 4162
3051#if EV_FORK_ENABLE 4163#if EV_FORK_ENABLE
… …
3084 4196
3085 EV_FREQUENT_CHECK; 4197 EV_FREQUENT_CHECK;
3086} 4198}
3087#endif 4199#endif
3088 4200
4201#if EV_CLEANUP_ENABLE
4202void
4203ev_cleanup_start (EV_P_ ev_cleanup *w)
4204{
4205 if (expect_false (ev_is_active (w)))
4206 return;
4207
4208 EV_FREQUENT_CHECK;
4209
4210 ev_start (EV_A_ (W)w, ++cleanupcnt);
4211 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4212 cleanups [cleanupcnt - 1] = w;
4213
4214 /* cleanup watchers should never keep a refcount on the loop */
4215 ev_unref (EV_A);
4216 EV_FREQUENT_CHECK;
4217}
4218
4219void
4220ev_cleanup_stop (EV_P_ ev_cleanup *w)
4221{
4222 clear_pending (EV_A_ (W)w);
4223 if (expect_false (!ev_is_active (w)))
4224 return;
4225
4226 EV_FREQUENT_CHECK;
4227 ev_ref (EV_A);
4228
4229 {
4230 int active = ev_active (w);
4231
4232 cleanups [active - 1] = cleanups [--cleanupcnt];
4233 ev_active (cleanups [active - 1]) = active;
4234 }
4235
4236 ev_stop (EV_A_ (W)w);
4237
4238 EV_FREQUENT_CHECK;
4239}
4240#endif
4241
3089#if EV_ASYNC_ENABLE 4242#if EV_ASYNC_ENABLE
3090void 4243void
3091ev_async_start (EV_P_ ev_async *w) 4244ev_async_start (EV_P_ ev_async *w)
3092{ 4245{
3093 if (expect_false (ev_is_active (w))) 4246 if (expect_false (ev_is_active (w)))
3094 return; 4247 return;
3095 4248
4249 w->sent = 0;
4250
3096 evpipe_init (EV_A); 4251 evpipe_init (EV_A);
3097 4252
3098 EV_FREQUENT_CHECK; 4253 EV_FREQUENT_CHECK;
3099 4254
3100 ev_start (EV_A_ (W)w, ++asynccnt); 4255 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3127 4282
3128void 4283void
3129ev_async_send (EV_P_ ev_async *w) 4284ev_async_send (EV_P_ ev_async *w)
3130{ 4285{
3131 w->sent = 1; 4286 w->sent = 1;
3132 evpipe_write (EV_A_ &gotasync); 4287 evpipe_write (EV_A_ &async_pending);
3133} 4288}
3134#endif 4289#endif
3135 4290
3136/*****************************************************************************/ 4291/*****************************************************************************/
3137 4292
… …
3177{ 4332{
3178 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4333 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3179 4334
3180 if (expect_false (!once)) 4335 if (expect_false (!once))
3181 { 4336 {
3182 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4337 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3183 return; 4338 return;
3184 } 4339 }
3185 4340
3186 once->cb = cb; 4341 once->cb = cb;
3187 once->arg = arg; 4342 once->arg = arg;
… …
3201 } 4356 }
3202} 4357}
3203 4358
3204/*****************************************************************************/ 4359/*****************************************************************************/
3205 4360
3206#if 0 4361#if EV_WALK_ENABLE
3207void 4362void ecb_cold
3208ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4363ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3209{ 4364{
3210 int i, j; 4365 int i, j;
3211 ev_watcher_list *wl, *wn; 4366 ev_watcher_list *wl, *wn;
3212 4367
… …
3227#if EV_USE_INOTIFY 4382#if EV_USE_INOTIFY
3228 if (ev_cb ((ev_io *)wl) == infy_cb) 4383 if (ev_cb ((ev_io *)wl) == infy_cb)
3229 ; 4384 ;
3230 else 4385 else
3231#endif 4386#endif
3232 if ((ev_io *)wl != &pipeev) 4387 if ((ev_io *)wl != &pipe_w)
3233 if (types & EV_IO) 4388 if (types & EV_IO)
3234 cb (EV_A_ EV_IO, wl); 4389 cb (EV_A_ EV_IO, wl);
3235 4390
3236 wl = wn; 4391 wl = wn;
3237 } 4392 }
… …
3256 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4411 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3257#endif 4412#endif
3258 4413
3259#if EV_IDLE_ENABLE 4414#if EV_IDLE_ENABLE
3260 if (types & EV_IDLE) 4415 if (types & EV_IDLE)
3261 for (j = NUMPRI; i--; ) 4416 for (j = NUMPRI; j--; )
3262 for (i = idlecnt [j]; i--; ) 4417 for (i = idlecnt [j]; i--; )
3263 cb (EV_A_ EV_IDLE, idles [j][i]); 4418 cb (EV_A_ EV_IDLE, idles [j][i]);
3264#endif 4419#endif
3265 4420
3266#if EV_FORK_ENABLE 4421#if EV_FORK_ENABLE
… …
3274 if (types & EV_ASYNC) 4429 if (types & EV_ASYNC)
3275 for (i = asynccnt; i--; ) 4430 for (i = asynccnt; i--; )
3276 cb (EV_A_ EV_ASYNC, asyncs [i]); 4431 cb (EV_A_ EV_ASYNC, asyncs [i]);
3277#endif 4432#endif
3278 4433
4434#if EV_PREPARE_ENABLE
3279 if (types & EV_PREPARE) 4435 if (types & EV_PREPARE)
3280 for (i = preparecnt; i--; ) 4436 for (i = preparecnt; i--; )
3281#if EV_EMBED_ENABLE 4437# if EV_EMBED_ENABLE
3282 if (ev_cb (prepares [i]) != embed_prepare_cb) 4438 if (ev_cb (prepares [i]) != embed_prepare_cb)
3283#endif 4439# endif
3284 cb (EV_A_ EV_PREPARE, prepares [i]); 4440 cb (EV_A_ EV_PREPARE, prepares [i]);
4441#endif
3285 4442
4443#if EV_CHECK_ENABLE
3286 if (types & EV_CHECK) 4444 if (types & EV_CHECK)
3287 for (i = checkcnt; i--; ) 4445 for (i = checkcnt; i--; )
3288 cb (EV_A_ EV_CHECK, checks [i]); 4446 cb (EV_A_ EV_CHECK, checks [i]);
4447#endif
3289 4448
4449#if EV_SIGNAL_ENABLE
3290 if (types & EV_SIGNAL) 4450 if (types & EV_SIGNAL)
3291 for (i = 0; i < signalmax; ++i) 4451 for (i = 0; i < EV_NSIG - 1; ++i)
3292 for (wl = signals [i].head; wl; ) 4452 for (wl = signals [i].head; wl; )
3293 { 4453 {
3294 wn = wl->next; 4454 wn = wl->next;
3295 cb (EV_A_ EV_SIGNAL, wl); 4455 cb (EV_A_ EV_SIGNAL, wl);
3296 wl = wn; 4456 wl = wn;
3297 } 4457 }
4458#endif
3298 4459
4460#if EV_CHILD_ENABLE
3299 if (types & EV_CHILD) 4461 if (types & EV_CHILD)
3300 for (i = EV_PID_HASHSIZE; i--; ) 4462 for (i = (EV_PID_HASHSIZE); i--; )
3301 for (wl = childs [i]; wl; ) 4463 for (wl = childs [i]; wl; )
3302 { 4464 {
3303 wn = wl->next; 4465 wn = wl->next;
3304 cb (EV_A_ EV_CHILD, wl); 4466 cb (EV_A_ EV_CHILD, wl);
3305 wl = wn; 4467 wl = wn;
3306 } 4468 }
4469#endif
3307/* EV_STAT 0x00001000 /* stat data changed */ 4470/* EV_STAT 0x00001000 /* stat data changed */
3308/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4471/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3309} 4472}
3310#endif 4473#endif
3311 4474
3312#if EV_MULTIPLICITY 4475#if EV_MULTIPLICITY
3313 #include "ev_wrap.h" 4476 #include "ev_wrap.h"
3314#endif 4477#endif
3315 4478
3316#ifdef __cplusplus
3317}
3318#endif
3319

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