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Comparing libev/ev.c (file contents):
Revision 1.286 by root, Wed Apr 15 19:37:15 2009 UTC vs.
Revision 1.412 by root, Wed Feb 22 01:53:00 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 #elif defined(__mips__)
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #endif
585 #endif
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
590 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined(_WIN32)
599 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
606 #endif
607#endif
608
609#ifndef ECB_MEMORY_FENCE
610 #if !ECB_AVOID_PTHREADS
611 /*
612 * if you get undefined symbol references to pthread_mutex_lock,
613 * or failure to find pthread.h, then you should implement
614 * the ECB_MEMORY_FENCE operations for your cpu/compiler
615 * OR provide pthread.h and link against the posix thread library
616 * of your system.
617 */
618 #include <pthread.h>
619 #define ECB_NEEDS_PTHREADS 1
620 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
621
622 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
623 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
624 #endif
625#endif
626
627#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
628 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
629#endif
630
631#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
632 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
633#endif
634
635/*****************************************************************************/
636
637#define ECB_C99 (__STDC_VERSION__ >= 199901L)
638
639#if __cplusplus
640 #define ecb_inline static inline
641#elif ECB_GCC_VERSION(2,5)
642 #define ecb_inline static __inline__
643#elif ECB_C99
644 #define ecb_inline static inline
645#else
646 #define ecb_inline static
647#endif
648
649#if ECB_GCC_VERSION(3,3)
650 #define ecb_restrict __restrict__
651#elif ECB_C99
652 #define ecb_restrict restrict
653#else
654 #define ecb_restrict
655#endif
656
657typedef int ecb_bool;
658
659#define ECB_CONCAT_(a, b) a ## b
660#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
661#define ECB_STRINGIFY_(a) # a
662#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
663
664#define ecb_function_ ecb_inline
665
666#if ECB_GCC_VERSION(3,1)
667 #define ecb_attribute(attrlist) __attribute__(attrlist)
668 #define ecb_is_constant(expr) __builtin_constant_p (expr)
669 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
670 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
671#else
672 #define ecb_attribute(attrlist)
673 #define ecb_is_constant(expr) 0
674 #define ecb_expect(expr,value) (expr)
675 #define ecb_prefetch(addr,rw,locality)
676#endif
677
678/* no emulation for ecb_decltype */
679#if ECB_GCC_VERSION(4,5)
680 #define ecb_decltype(x) __decltype(x)
681#elif ECB_GCC_VERSION(3,0)
682 #define ecb_decltype(x) __typeof(x)
683#endif
684
685#define ecb_noinline ecb_attribute ((__noinline__))
686#define ecb_noreturn ecb_attribute ((__noreturn__))
687#define ecb_unused ecb_attribute ((__unused__))
688#define ecb_const ecb_attribute ((__const__))
689#define ecb_pure ecb_attribute ((__pure__))
690
691#if ECB_GCC_VERSION(4,3)
692 #define ecb_artificial ecb_attribute ((__artificial__))
693 #define ecb_hot ecb_attribute ((__hot__))
694 #define ecb_cold ecb_attribute ((__cold__))
695#else
696 #define ecb_artificial
697 #define ecb_hot
698 #define ecb_cold
699#endif
700
701/* put around conditional expressions if you are very sure that the */
702/* expression is mostly true or mostly false. note that these return */
703/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 704#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 705#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
706/* for compatibility to the rest of the world */
707#define ecb_likely(expr) ecb_expect_true (expr)
708#define ecb_unlikely(expr) ecb_expect_false (expr)
709
710/* count trailing zero bits and count # of one bits */
711#if ECB_GCC_VERSION(3,4)
712 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
713 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
714 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
715 #define ecb_ctz32(x) __builtin_ctz (x)
716 #define ecb_ctz64(x) __builtin_ctzll (x)
717 #define ecb_popcount32(x) __builtin_popcount (x)
718 /* no popcountll */
719#else
720 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
721 ecb_function_ int
722 ecb_ctz32 (uint32_t x)
723 {
724 int r = 0;
725
726 x &= ~x + 1; /* this isolates the lowest bit */
727
728#if ECB_branchless_on_i386
729 r += !!(x & 0xaaaaaaaa) << 0;
730 r += !!(x & 0xcccccccc) << 1;
731 r += !!(x & 0xf0f0f0f0) << 2;
732 r += !!(x & 0xff00ff00) << 3;
733 r += !!(x & 0xffff0000) << 4;
734#else
735 if (x & 0xaaaaaaaa) r += 1;
736 if (x & 0xcccccccc) r += 2;
737 if (x & 0xf0f0f0f0) r += 4;
738 if (x & 0xff00ff00) r += 8;
739 if (x & 0xffff0000) r += 16;
740#endif
741
742 return r;
743 }
744
745 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
746 ecb_function_ int
747 ecb_ctz64 (uint64_t x)
748 {
749 int shift = x & 0xffffffffU ? 0 : 32;
750 return ecb_ctz32 (x >> shift) + shift;
751 }
752
753 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
754 ecb_function_ int
755 ecb_popcount32 (uint32_t x)
756 {
757 x -= (x >> 1) & 0x55555555;
758 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
759 x = ((x >> 4) + x) & 0x0f0f0f0f;
760 x *= 0x01010101;
761
762 return x >> 24;
763 }
764
765 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
766 ecb_function_ int ecb_ld32 (uint32_t x)
767 {
768 int r = 0;
769
770 if (x >> 16) { x >>= 16; r += 16; }
771 if (x >> 8) { x >>= 8; r += 8; }
772 if (x >> 4) { x >>= 4; r += 4; }
773 if (x >> 2) { x >>= 2; r += 2; }
774 if (x >> 1) { r += 1; }
775
776 return r;
777 }
778
779 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
780 ecb_function_ int ecb_ld64 (uint64_t x)
781 {
782 int r = 0;
783
784 if (x >> 32) { x >>= 32; r += 32; }
785
786 return r + ecb_ld32 (x);
787 }
788#endif
789
790ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
792{
793 return ( (x * 0x0802U & 0x22110U)
794 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
795}
796
797ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
799{
800 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
801 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
802 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
803 x = ( x >> 8 ) | ( x << 8);
804
805 return x;
806}
807
808ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
810{
811 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
812 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
813 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
814 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
815 x = ( x >> 16 ) | ( x << 16);
816
817 return x;
818}
819
820/* popcount64 is only available on 64 bit cpus as gcc builtin */
821/* so for this version we are lazy */
822ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
823ecb_function_ int
824ecb_popcount64 (uint64_t x)
825{
826 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
827}
828
829ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
830ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
831ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
832ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
833ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
834ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
835ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
836ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
837
838ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
839ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
840ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
841ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
842ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
843ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
844ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
845ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
846
847#if ECB_GCC_VERSION(4,3)
848 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
849 #define ecb_bswap32(x) __builtin_bswap32 (x)
850 #define ecb_bswap64(x) __builtin_bswap64 (x)
851#else
852 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
853 ecb_function_ uint16_t
854 ecb_bswap16 (uint16_t x)
855 {
856 return ecb_rotl16 (x, 8);
857 }
858
859 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
860 ecb_function_ uint32_t
861 ecb_bswap32 (uint32_t x)
862 {
863 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
864 }
865
866 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
867 ecb_function_ uint64_t
868 ecb_bswap64 (uint64_t x)
869 {
870 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
871 }
872#endif
873
874#if ECB_GCC_VERSION(4,5)
875 #define ecb_unreachable() __builtin_unreachable ()
876#else
877 /* this seems to work fine, but gcc always emits a warning for it :/ */
878 ecb_inline void ecb_unreachable (void) ecb_noreturn;
879 ecb_inline void ecb_unreachable (void) { }
880#endif
881
882/* try to tell the compiler that some condition is definitely true */
883#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
884
885ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
886ecb_inline unsigned char
887ecb_byteorder_helper (void)
888{
889 const uint32_t u = 0x11223344;
890 return *(unsigned char *)&u;
891}
892
893ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
894ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
895ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
896ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
897
898#if ECB_GCC_VERSION(3,0) || ECB_C99
899 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
900#else
901 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
902#endif
903
904#if __cplusplus
905 template<typename T>
906 static inline T ecb_div_rd (T val, T div)
907 {
908 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
909 }
910 template<typename T>
911 static inline T ecb_div_ru (T val, T div)
912 {
913 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
914 }
915#else
916 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
917 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
918#endif
919
920#if ecb_cplusplus_does_not_suck
921 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
922 template<typename T, int N>
923 static inline int ecb_array_length (const T (&arr)[N])
924 {
925 return N;
926 }
927#else
928 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
929#endif
930
931#endif
932
933/* ECB.H END */
934
935#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
936/* if your architecture doesn't need memory fences, e.g. because it is
937 * single-cpu/core, or if you use libev in a project that doesn't use libev
938 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
939 * libev, in which cases the memory fences become nops.
940 * alternatively, you can remove this #error and link against libpthread,
941 * which will then provide the memory fences.
942 */
943# error "memory fences not defined for your architecture, please report"
944#endif
945
946#ifndef ECB_MEMORY_FENCE
947# define ECB_MEMORY_FENCE do { } while (0)
948# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
949# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
950#endif
951
952#define expect_false(cond) ecb_expect_false (cond)
953#define expect_true(cond) ecb_expect_true (cond)
954#define noinline ecb_noinline
955
381#define inline_size static inline 956#define inline_size ecb_inline
382 957
383#if EV_MINIMAL 958#if EV_FEATURE_CODE
959# define inline_speed ecb_inline
960#else
384# define inline_speed static noinline 961# define inline_speed static noinline
962#endif
963
964#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
965
966#if EV_MINPRI == EV_MAXPRI
967# define ABSPRI(w) (((W)w), 0)
385#else 968#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) 969# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
970#endif
391 971
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 972#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 973#define EMPTY2(a,b) /* used to suppress some warnings */
394 974
395typedef ev_watcher *W; 975typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 979#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 980#define ev_at(w) ((WT)(w))->at
401 981
402#if EV_USE_REALTIME 982#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 983/* 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 */ 984/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 985static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 986#endif
407 987
408#if EV_USE_MONOTONIC 988#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 989static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 990#endif
411 991
992#ifndef EV_FD_TO_WIN32_HANDLE
993# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
994#endif
995#ifndef EV_WIN32_HANDLE_TO_FD
996# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
997#endif
998#ifndef EV_WIN32_CLOSE_FD
999# define EV_WIN32_CLOSE_FD(fd) close (fd)
1000#endif
1001
412#ifdef _WIN32 1002#ifdef _WIN32
413# include "ev_win32.c" 1003# include "ev_win32.c"
414#endif 1004#endif
415 1005
416/*****************************************************************************/ 1006/*****************************************************************************/
417 1007
1008/* define a suitable floor function (only used by periodics atm) */
1009
1010#if EV_USE_FLOOR
1011# include <math.h>
1012# define ev_floor(v) floor (v)
1013#else
1014
1015#include <float.h>
1016
1017/* a floor() replacement function, should be independent of ev_tstamp type */
1018static ev_tstamp noinline
1019ev_floor (ev_tstamp v)
1020{
1021 /* the choice of shift factor is not terribly important */
1022#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1023 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1024#else
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1026#endif
1027
1028 /* argument too large for an unsigned long? */
1029 if (expect_false (v >= shift))
1030 {
1031 ev_tstamp f;
1032
1033 if (v == v - 1.)
1034 return v; /* very large number */
1035
1036 f = shift * ev_floor (v * (1. / shift));
1037 return f + ev_floor (v - f);
1038 }
1039
1040 /* special treatment for negative args? */
1041 if (expect_false (v < 0.))
1042 {
1043 ev_tstamp f = -ev_floor (-v);
1044
1045 return f - (f == v ? 0 : 1);
1046 }
1047
1048 /* fits into an unsigned long */
1049 return (unsigned long)v;
1050}
1051
1052#endif
1053
1054/*****************************************************************************/
1055
1056#ifdef __linux
1057# include <sys/utsname.h>
1058#endif
1059
1060static unsigned int noinline ecb_cold
1061ev_linux_version (void)
1062{
1063#ifdef __linux
1064 unsigned int v = 0;
1065 struct utsname buf;
1066 int i;
1067 char *p = buf.release;
1068
1069 if (uname (&buf))
1070 return 0;
1071
1072 for (i = 3+1; --i; )
1073 {
1074 unsigned int c = 0;
1075
1076 for (;;)
1077 {
1078 if (*p >= '0' && *p <= '9')
1079 c = c * 10 + *p++ - '0';
1080 else
1081 {
1082 p += *p == '.';
1083 break;
1084 }
1085 }
1086
1087 v = (v << 8) | c;
1088 }
1089
1090 return v;
1091#else
1092 return 0;
1093#endif
1094}
1095
1096/*****************************************************************************/
1097
1098#if EV_AVOID_STDIO
1099static void noinline ecb_cold
1100ev_printerr (const char *msg)
1101{
1102 write (STDERR_FILENO, msg, strlen (msg));
1103}
1104#endif
1105
418static void (*syserr_cb)(const char *msg); 1106static void (*syserr_cb)(const char *msg);
419 1107
420void 1108void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1109ev_set_syserr_cb (void (*cb)(const char *msg))
422{ 1110{
423 syserr_cb = cb; 1111 syserr_cb = cb;
424} 1112}
425 1113
426static void noinline 1114static void noinline ecb_cold
427ev_syserr (const char *msg) 1115ev_syserr (const char *msg)
428{ 1116{
429 if (!msg) 1117 if (!msg)
430 msg = "(libev) system error"; 1118 msg = "(libev) system error";
431 1119
432 if (syserr_cb) 1120 if (syserr_cb)
433 syserr_cb (msg); 1121 syserr_cb (msg);
434 else 1122 else
435 { 1123 {
1124#if EV_AVOID_STDIO
1125 ev_printerr (msg);
1126 ev_printerr (": ");
1127 ev_printerr (strerror (errno));
1128 ev_printerr ("\n");
1129#else
436 perror (msg); 1130 perror (msg);
1131#endif
437 abort (); 1132 abort ();
438 } 1133 }
439} 1134}
440 1135
441static void * 1136static void *
442ev_realloc_emul (void *ptr, long size) 1137ev_realloc_emul (void *ptr, long size)
443{ 1138{
1139#if __GLIBC__
1140 return realloc (ptr, size);
1141#else
444 /* some systems, notably openbsd and darwin, fail to properly 1142 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1143 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1144 * the single unix specification, so work around them here.
447 */ 1145 */
448 1146
449 if (size) 1147 if (size)
450 return realloc (ptr, size); 1148 return realloc (ptr, size);
451 1149
452 free (ptr); 1150 free (ptr);
453 return 0; 1151 return 0;
1152#endif
454} 1153}
455 1154
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1155static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 1156
458void 1157void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1158ev_set_allocator (void *(*cb)(void *ptr, long size))
460{ 1159{
461 alloc = cb; 1160 alloc = cb;
462} 1161}
463 1162
… …
466{ 1165{
467 ptr = alloc (ptr, size); 1166 ptr = alloc (ptr, size);
468 1167
469 if (!ptr && size) 1168 if (!ptr && size)
470 { 1169 {
1170#if EV_AVOID_STDIO
1171 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1172#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1173 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1174#endif
472 abort (); 1175 abort ();
473 } 1176 }
474 1177
475 return ptr; 1178 return ptr;
476} 1179}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1181#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1182#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1183
481/*****************************************************************************/ 1184/*****************************************************************************/
482 1185
1186/* set in reify when reification needed */
1187#define EV_ANFD_REIFY 1
1188
1189/* file descriptor info structure */
483typedef struct 1190typedef struct
484{ 1191{
485 WL head; 1192 WL head;
486 unsigned char events; 1193 unsigned char events; /* the events watched for */
487 unsigned char reify; 1194 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 */ 1195 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 1196 unsigned char unused;
490#if EV_USE_EPOLL 1197#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 1198 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 1199#endif
493#if EV_SELECT_IS_WINSOCKET 1200#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 1201 SOCKET handle;
495#endif 1202#endif
1203#if EV_USE_IOCP
1204 OVERLAPPED or, ow;
1205#endif
496} ANFD; 1206} ANFD;
497 1207
1208/* stores the pending event set for a given watcher */
498typedef struct 1209typedef struct
499{ 1210{
500 W w; 1211 W w;
501 int events; 1212 int events; /* the pending event set for the given watcher */
502} ANPENDING; 1213} ANPENDING;
503 1214
504#if EV_USE_INOTIFY 1215#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 1216/* hash table entry per inotify-id */
506typedef struct 1217typedef struct
… …
509} ANFS; 1220} ANFS;
510#endif 1221#endif
511 1222
512/* Heap Entry */ 1223/* Heap Entry */
513#if EV_HEAP_CACHE_AT 1224#if EV_HEAP_CACHE_AT
1225 /* a heap element */
514 typedef struct { 1226 typedef struct {
515 ev_tstamp at; 1227 ev_tstamp at;
516 WT w; 1228 WT w;
517 } ANHE; 1229 } ANHE;
518 1230
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1231 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1232 #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 */ 1233 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 1234#else
1235 /* a heap element */
523 typedef WT ANHE; 1236 typedef WT ANHE;
524 1237
525 #define ANHE_w(he) (he) 1238 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 1239 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 1240 #define ANHE_at_cache(he)
… …
538 #undef VAR 1251 #undef VAR
539 }; 1252 };
540 #include "ev_wrap.h" 1253 #include "ev_wrap.h"
541 1254
542 static struct ev_loop default_loop_struct; 1255 static struct ev_loop default_loop_struct;
543 struct ev_loop *ev_default_loop_ptr; 1256 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
544 1257
545#else 1258#else
546 1259
547 ev_tstamp ev_rt_now; 1260 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; 1261 #define VAR(name,decl) static decl;
549 #include "ev_vars.h" 1262 #include "ev_vars.h"
550 #undef VAR 1263 #undef VAR
551 1264
552 static int ev_default_loop_ptr; 1265 static int ev_default_loop_ptr;
553 1266
554#endif 1267#endif
555 1268
1269#if EV_FEATURE_API
1270# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1271# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1272# define EV_INVOKE_PENDING invoke_cb (EV_A)
1273#else
1274# define EV_RELEASE_CB (void)0
1275# define EV_ACQUIRE_CB (void)0
1276# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1277#endif
1278
1279#define EVBREAK_RECURSE 0x80
1280
556/*****************************************************************************/ 1281/*****************************************************************************/
557 1282
1283#ifndef EV_HAVE_EV_TIME
558ev_tstamp 1284ev_tstamp
559ev_time (void) 1285ev_time (void)
560{ 1286{
561#if EV_USE_REALTIME 1287#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 1288 if (expect_true (have_realtime))
… …
569 1295
570 struct timeval tv; 1296 struct timeval tv;
571 gettimeofday (&tv, 0); 1297 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 1298 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 1299}
1300#endif
574 1301
575inline_size ev_tstamp 1302inline_size ev_tstamp
576get_clock (void) 1303get_clock (void)
577{ 1304{
578#if EV_USE_MONOTONIC 1305#if EV_USE_MONOTONIC
… …
601 if (delay > 0.) 1328 if (delay > 0.)
602 { 1329 {
603#if EV_USE_NANOSLEEP 1330#if EV_USE_NANOSLEEP
604 struct timespec ts; 1331 struct timespec ts;
605 1332
606 ts.tv_sec = (time_t)delay; 1333 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 1334 nanosleep (&ts, 0);
610#elif defined(_WIN32) 1335#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3)); 1336 Sleep ((unsigned long)(delay * 1e3));
612#else 1337#else
613 struct timeval tv; 1338 struct timeval tv;
614 1339
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 */ 1340 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1341 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 1342 /* by older ones */
1343 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 1344 select (0, 0, 0, 0, &tv);
622#endif 1345#endif
623 } 1346 }
624} 1347}
625 1348
626/*****************************************************************************/ 1349/*****************************************************************************/
627 1350
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1351#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 1352
1353/* find a suitable new size for the given array, */
1354/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 1355inline_size int
631array_nextsize (int elem, int cur, int cnt) 1356array_nextsize (int elem, int cur, int cnt)
632{ 1357{
633 int ncur = cur + 1; 1358 int ncur = cur + 1;
634 1359
635 do 1360 do
636 ncur <<= 1; 1361 ncur <<= 1;
637 while (cnt > ncur); 1362 while (cnt > ncur);
638 1363
639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1364 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1365 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
641 { 1366 {
642 ncur *= elem; 1367 ncur *= elem;
643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1368 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
644 ncur = ncur - sizeof (void *) * 4; 1369 ncur = ncur - sizeof (void *) * 4;
… …
646 } 1371 }
647 1372
648 return ncur; 1373 return ncur;
649} 1374}
650 1375
651static noinline void * 1376static void * noinline ecb_cold
652array_realloc (int elem, void *base, int *cur, int cnt) 1377array_realloc (int elem, void *base, int *cur, int cnt)
653{ 1378{
654 *cur = array_nextsize (elem, *cur, cnt); 1379 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 1380 return ev_realloc (base, elem * *cur);
656} 1381}
… …
659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1384 memset ((void *)(base), 0, sizeof (*(base)) * (count))
660 1385
661#define array_needsize(type,base,cur,cnt,init) \ 1386#define array_needsize(type,base,cur,cnt,init) \
662 if (expect_false ((cnt) > (cur))) \ 1387 if (expect_false ((cnt) > (cur))) \
663 { \ 1388 { \
664 int ocur_ = (cur); \ 1389 int ecb_unused ocur_ = (cur); \
665 (base) = (type *)array_realloc \ 1390 (base) = (type *)array_realloc \
666 (sizeof (type), (base), &(cur), (cnt)); \ 1391 (sizeof (type), (base), &(cur), (cnt)); \
667 init ((base) + (ocur_), (cur) - ocur_); \ 1392 init ((base) + (ocur_), (cur) - ocur_); \
668 } 1393 }
669 1394
… …
680#define array_free(stem, idx) \ 1405#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1406 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 1407
683/*****************************************************************************/ 1408/*****************************************************************************/
684 1409
1410/* dummy callback for pending events */
1411static void noinline
1412pendingcb (EV_P_ ev_prepare *w, int revents)
1413{
1414}
1415
685void noinline 1416void noinline
686ev_feed_event (EV_P_ void *w, int revents) 1417ev_feed_event (EV_P_ void *w, int revents)
687{ 1418{
688 W w_ = (W)w; 1419 W w_ = (W)w;
689 int pri = ABSPRI (w_); 1420 int pri = ABSPRI (w_);
… …
724} 1455}
725 1456
726/*****************************************************************************/ 1457/*****************************************************************************/
727 1458
728inline_speed void 1459inline_speed void
729fd_event (EV_P_ int fd, int revents) 1460fd_event_nocheck (EV_P_ int fd, int revents)
730{ 1461{
731 ANFD *anfd = anfds + fd; 1462 ANFD *anfd = anfds + fd;
732 ev_io *w; 1463 ev_io *w;
733 1464
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1465 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 1469 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 1470 ev_feed_event (EV_A_ (W)w, ev);
740 } 1471 }
741} 1472}
742 1473
1474/* do not submit kernel events for fds that have reify set */
1475/* because that means they changed while we were polling for new events */
1476inline_speed void
1477fd_event (EV_P_ int fd, int revents)
1478{
1479 ANFD *anfd = anfds + fd;
1480
1481 if (expect_true (!anfd->reify))
1482 fd_event_nocheck (EV_A_ fd, revents);
1483}
1484
743void 1485void
744ev_feed_fd_event (EV_P_ int fd, int revents) 1486ev_feed_fd_event (EV_P_ int fd, int revents)
745{ 1487{
746 if (fd >= 0 && fd < anfdmax) 1488 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 1489 fd_event_nocheck (EV_A_ fd, revents);
748} 1490}
749 1491
1492/* make sure the external fd watch events are in-sync */
1493/* with the kernel/libev internal state */
750inline_size void 1494inline_size void
751fd_reify (EV_P) 1495fd_reify (EV_P)
752{ 1496{
753 int i; 1497 int i;
1498
1499#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1500 for (i = 0; i < fdchangecnt; ++i)
1501 {
1502 int fd = fdchanges [i];
1503 ANFD *anfd = anfds + fd;
1504
1505 if (anfd->reify & EV__IOFDSET && anfd->head)
1506 {
1507 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1508
1509 if (handle != anfd->handle)
1510 {
1511 unsigned long arg;
1512
1513 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1514
1515 /* handle changed, but fd didn't - we need to do it in two steps */
1516 backend_modify (EV_A_ fd, anfd->events, 0);
1517 anfd->events = 0;
1518 anfd->handle = handle;
1519 }
1520 }
1521 }
1522#endif
754 1523
755 for (i = 0; i < fdchangecnt; ++i) 1524 for (i = 0; i < fdchangecnt; ++i)
756 { 1525 {
757 int fd = fdchanges [i]; 1526 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 1527 ANFD *anfd = anfds + fd;
759 ev_io *w; 1528 ev_io *w;
760 1529
761 unsigned char events = 0; 1530 unsigned char o_events = anfd->events;
1531 unsigned char o_reify = anfd->reify;
762 1532
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1533 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 1534
766#if EV_SELECT_IS_WINSOCKET 1535 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 1536 {
769 unsigned long arg; 1537 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 1538
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1539 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 1540 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 1541
774 #endif 1542 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1543 o_reify = EV__IOFDSET; /* actually |= */
776 } 1544 }
777#endif
778 1545
779 { 1546 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); 1547 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1548 }
790 1549
791 fdchangecnt = 0; 1550 fdchangecnt = 0;
792} 1551}
793 1552
1553/* something about the given fd changed */
794inline_size void 1554inline_size void
795fd_change (EV_P_ int fd, int flags) 1555fd_change (EV_P_ int fd, int flags)
796{ 1556{
797 unsigned char reify = anfds [fd].reify; 1557 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1558 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1563 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1564 fdchanges [fdchangecnt - 1] = fd;
805 } 1565 }
806} 1566}
807 1567
1568/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1569inline_speed void ecb_cold
809fd_kill (EV_P_ int fd) 1570fd_kill (EV_P_ int fd)
810{ 1571{
811 ev_io *w; 1572 ev_io *w;
812 1573
813 while ((w = (ev_io *)anfds [fd].head)) 1574 while ((w = (ev_io *)anfds [fd].head))
… …
815 ev_io_stop (EV_A_ w); 1576 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1577 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1578 }
818} 1579}
819 1580
1581/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1582inline_size int ecb_cold
821fd_valid (int fd) 1583fd_valid (int fd)
822{ 1584{
823#ifdef _WIN32 1585#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1586 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1587#else
826 return fcntl (fd, F_GETFD) != -1; 1588 return fcntl (fd, F_GETFD) != -1;
827#endif 1589#endif
828} 1590}
829 1591
830/* called on EBADF to verify fds */ 1592/* called on EBADF to verify fds */
831static void noinline 1593static void noinline ecb_cold
832fd_ebadf (EV_P) 1594fd_ebadf (EV_P)
833{ 1595{
834 int fd; 1596 int fd;
835 1597
836 for (fd = 0; fd < anfdmax; ++fd) 1598 for (fd = 0; fd < anfdmax; ++fd)
… …
838 if (!fd_valid (fd) && errno == EBADF) 1600 if (!fd_valid (fd) && errno == EBADF)
839 fd_kill (EV_A_ fd); 1601 fd_kill (EV_A_ fd);
840} 1602}
841 1603
842/* called on ENOMEM in select/poll to kill some fds and retry */ 1604/* called on ENOMEM in select/poll to kill some fds and retry */
843static void noinline 1605static void noinline ecb_cold
844fd_enomem (EV_P) 1606fd_enomem (EV_P)
845{ 1607{
846 int fd; 1608 int fd;
847 1609
848 for (fd = anfdmax; fd--; ) 1610 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1611 if (anfds [fd].events)
850 { 1612 {
851 fd_kill (EV_A_ fd); 1613 fd_kill (EV_A_ fd);
852 return; 1614 break;
853 } 1615 }
854} 1616}
855 1617
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1618/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1619static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1624 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1625 if (anfds [fd].events)
864 { 1626 {
865 anfds [fd].events = 0; 1627 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1628 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1629 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1630 }
869} 1631}
870 1632
1633/* used to prepare libev internal fd's */
1634/* this is not fork-safe */
1635inline_speed void
1636fd_intern (int fd)
1637{
1638#ifdef _WIN32
1639 unsigned long arg = 1;
1640 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1641#else
1642 fcntl (fd, F_SETFD, FD_CLOEXEC);
1643 fcntl (fd, F_SETFL, O_NONBLOCK);
1644#endif
1645}
1646
871/*****************************************************************************/ 1647/*****************************************************************************/
872 1648
873/* 1649/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1650 * 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 1651 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1652 * the branching factor of the d-tree.
877 */ 1653 */
878 1654
879/* 1655/*
… …
947 1723
948 for (;;) 1724 for (;;)
949 { 1725 {
950 int c = k << 1; 1726 int c = k << 1;
951 1727
952 if (c > N + HEAP0 - 1) 1728 if (c >= N + HEAP0)
953 break; 1729 break;
954 1730
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1731 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1732 ? 1 : 0;
957 1733
… …
989 1765
990 heap [k] = he; 1766 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1767 ev_active (ANHE_w (he)) = k;
992} 1768}
993 1769
1770/* move an element suitably so it is in a correct place */
994inline_size void 1771inline_size void
995adjustheap (ANHE *heap, int N, int k) 1772adjustheap (ANHE *heap, int N, int k)
996{ 1773{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1774 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1775 upheap (heap, k);
999 else 1776 else
1000 downheap (heap, N, k); 1777 downheap (heap, N, k);
1001} 1778}
1002 1779
… …
1012 upheap (heap, i + HEAP0); 1789 upheap (heap, i + HEAP0);
1013} 1790}
1014 1791
1015/*****************************************************************************/ 1792/*****************************************************************************/
1016 1793
1794/* associate signal watchers to a signal signal */
1017typedef struct 1795typedef struct
1018{ 1796{
1797 EV_ATOMIC_T pending;
1798#if EV_MULTIPLICITY
1799 EV_P;
1800#endif
1019 WL head; 1801 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1802} ANSIG;
1022 1803
1023static ANSIG *signals; 1804static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1805
1028/*****************************************************************************/ 1806/*****************************************************************************/
1029 1807
1030inline_speed void 1808#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 1809
1042static void noinline 1810static void noinline ecb_cold
1043evpipe_init (EV_P) 1811evpipe_init (EV_P)
1044{ 1812{
1045 if (!ev_is_active (&pipeev)) 1813 if (!ev_is_active (&pipe_w))
1046 { 1814 {
1047#if EV_USE_EVENTFD 1815# if EV_USE_EVENTFD
1816 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1817 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1818 evfd = eventfd (0, 0);
1819
1820 if (evfd >= 0)
1049 { 1821 {
1050 evpipe [0] = -1; 1822 evpipe [0] = -1;
1051 fd_intern (evfd); 1823 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1824 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1825 }
1054 else 1826 else
1055#endif 1827# endif
1056 { 1828 {
1057 while (pipe (evpipe)) 1829 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1830 ev_syserr ("(libev) error creating signal/async pipe");
1059 1831
1060 fd_intern (evpipe [0]); 1832 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1833 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1834 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1835 }
1064 1836
1065 ev_io_start (EV_A_ &pipeev); 1837 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1838 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1839 }
1068} 1840}
1069 1841
1070inline_size void 1842inline_speed void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1843evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1844{
1073 if (!*flag) 1845 if (expect_true (*flag))
1846 return;
1847
1848 *flag = 1;
1849
1850 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1851
1852 pipe_write_skipped = 1;
1853
1854 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1855
1856 if (pipe_write_wanted)
1074 { 1857 {
1858 int old_errno;
1859
1860 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1861
1075 int old_errno = errno; /* save errno because write might clobber it */ 1862 old_errno = errno; /* save errno because write will clobber it */
1076
1077 *flag = 1;
1078 1863
1079#if EV_USE_EVENTFD 1864#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1865 if (evfd >= 0)
1081 { 1866 {
1082 uint64_t counter = 1; 1867 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1868 write (evfd, &counter, sizeof (uint64_t));
1084 } 1869 }
1085 else 1870 else
1086#endif 1871#endif
1872 {
1873 /* win32 people keep sending patches that change this write() to send() */
1874 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1875 /* so when you think this write should be a send instead, please find out */
1876 /* where your send() is from - it's definitely not the microsoft send, and */
1877 /* tell me. thank you. */
1878 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1879 /* check the ev documentation on how to use this flag */
1087 write (evpipe [1], &old_errno, 1); 1880 write (evpipe [1], &(evpipe [1]), 1);
1881 }
1088 1882
1089 errno = old_errno; 1883 errno = old_errno;
1090 } 1884 }
1091} 1885}
1092 1886
1887/* called whenever the libev signal pipe */
1888/* got some events (signal, async) */
1093static void 1889static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1890pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1891{
1892 int i;
1893
1894 if (revents & EV_READ)
1895 {
1096#if EV_USE_EVENTFD 1896#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1897 if (evfd >= 0)
1098 { 1898 {
1099 uint64_t counter; 1899 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1900 read (evfd, &counter, sizeof (uint64_t));
1101 } 1901 }
1102 else 1902 else
1103#endif 1903#endif
1104 { 1904 {
1105 char dummy; 1905 char dummy;
1906 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1907 read (evpipe [0], &dummy, 1);
1908 }
1909 }
1910
1911 pipe_write_skipped = 0;
1912
1913#if EV_SIGNAL_ENABLE
1914 if (sig_pending)
1107 } 1915 {
1916 sig_pending = 0;
1108 1917
1109 if (gotsig && ev_is_default_loop (EV_A)) 1918 for (i = EV_NSIG - 1; i--; )
1110 { 1919 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); 1920 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1921 }
1922#endif
1118 1923
1119#if EV_ASYNC_ENABLE 1924#if EV_ASYNC_ENABLE
1120 if (gotasync) 1925 if (async_pending)
1121 { 1926 {
1122 int i; 1927 async_pending = 0;
1123 gotasync = 0;
1124 1928
1125 for (i = asynccnt; i--; ) 1929 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1930 if (asyncs [i]->sent)
1127 { 1931 {
1128 asyncs [i]->sent = 0; 1932 asyncs [i]->sent = 0;
… …
1132#endif 1936#endif
1133} 1937}
1134 1938
1135/*****************************************************************************/ 1939/*****************************************************************************/
1136 1940
1941void
1942ev_feed_signal (int signum)
1943{
1944#if EV_MULTIPLICITY
1945 EV_P = signals [signum - 1].loop;
1946
1947 if (!EV_A)
1948 return;
1949#endif
1950
1951 if (!ev_active (&pipe_w))
1952 return;
1953
1954 signals [signum - 1].pending = 1;
1955 evpipe_write (EV_A_ &sig_pending);
1956}
1957
1137static void 1958static void
1138ev_sighandler (int signum) 1959ev_sighandler (int signum)
1139{ 1960{
1140#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct;
1142#endif
1143
1144#if _WIN32 1961#ifdef _WIN32
1145 signal (signum, ev_sighandler); 1962 signal (signum, ev_sighandler);
1146#endif 1963#endif
1147 1964
1148 signals [signum - 1].gotsig = 1; 1965 ev_feed_signal (signum);
1149 evpipe_write (EV_A_ &gotsig);
1150} 1966}
1151 1967
1152void noinline 1968void noinline
1153ev_feed_signal_event (EV_P_ int signum) 1969ev_feed_signal_event (EV_P_ int signum)
1154{ 1970{
1155 WL w; 1971 WL w;
1156 1972
1973 if (expect_false (signum <= 0 || signum > EV_NSIG))
1974 return;
1975
1976 --signum;
1977
1157#if EV_MULTIPLICITY 1978#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1979 /* it is permissible to try to feed a signal to the wrong loop */
1159#endif 1980 /* or, likely more useful, feeding a signal nobody is waiting for */
1160 1981
1161 --signum; 1982 if (expect_false (signals [signum].loop != EV_A))
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1983 return;
1984#endif
1165 1985
1166 signals [signum].gotsig = 0; 1986 signals [signum].pending = 0;
1167 1987
1168 for (w = signals [signum].head; w; w = w->next) 1988 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1989 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1990}
1171 1991
1992#if EV_USE_SIGNALFD
1993static void
1994sigfdcb (EV_P_ ev_io *iow, int revents)
1995{
1996 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1997
1998 for (;;)
1999 {
2000 ssize_t res = read (sigfd, si, sizeof (si));
2001
2002 /* not ISO-C, as res might be -1, but works with SuS */
2003 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2004 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2005
2006 if (res < (ssize_t)sizeof (si))
2007 break;
2008 }
2009}
2010#endif
2011
2012#endif
2013
1172/*****************************************************************************/ 2014/*****************************************************************************/
1173 2015
2016#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 2017static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 2018
1178static ev_signal childev; 2019static ev_signal childev;
1179 2020
1180#ifndef WIFCONTINUED 2021#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 2022# define WIFCONTINUED(status) 0
1182#endif 2023#endif
1183 2024
2025/* handle a single child status event */
1184inline_speed void 2026inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 2027child_reap (EV_P_ int chain, int pid, int status)
1186{ 2028{
1187 ev_child *w; 2029 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2030 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 2031
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2032 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 2033 {
1192 if ((w->pid == pid || !w->pid) 2034 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 2035 && (!traced || (w->flags & 1)))
1194 { 2036 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2037 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 2044
1203#ifndef WCONTINUED 2045#ifndef WCONTINUED
1204# define WCONTINUED 0 2046# define WCONTINUED 0
1205#endif 2047#endif
1206 2048
2049/* called on sigchld etc., calls waitpid */
1207static void 2050static void
1208childcb (EV_P_ ev_signal *sw, int revents) 2051childcb (EV_P_ ev_signal *sw, int revents)
1209{ 2052{
1210 int pid, status; 2053 int pid, status;
1211 2054
… …
1219 /* make sure we are called again until all children have been reaped */ 2062 /* 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 */ 2063 /* 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); 2064 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 2065
1223 child_reap (EV_A_ pid, pid, status); 2066 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 2067 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2068 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 2069}
1227 2070
1228#endif 2071#endif
1229 2072
1230/*****************************************************************************/ 2073/*****************************************************************************/
1231 2074
2075#if EV_USE_IOCP
2076# include "ev_iocp.c"
2077#endif
1232#if EV_USE_PORT 2078#if EV_USE_PORT
1233# include "ev_port.c" 2079# include "ev_port.c"
1234#endif 2080#endif
1235#if EV_USE_KQUEUE 2081#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 2082# include "ev_kqueue.c"
… …
1243#endif 2089#endif
1244#if EV_USE_SELECT 2090#if EV_USE_SELECT
1245# include "ev_select.c" 2091# include "ev_select.c"
1246#endif 2092#endif
1247 2093
1248int 2094int ecb_cold
1249ev_version_major (void) 2095ev_version_major (void)
1250{ 2096{
1251 return EV_VERSION_MAJOR; 2097 return EV_VERSION_MAJOR;
1252} 2098}
1253 2099
1254int 2100int ecb_cold
1255ev_version_minor (void) 2101ev_version_minor (void)
1256{ 2102{
1257 return EV_VERSION_MINOR; 2103 return EV_VERSION_MINOR;
1258} 2104}
1259 2105
1260/* return true if we are running with elevated privileges and should ignore env variables */ 2106/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 2107int inline_size ecb_cold
1262enable_secure (void) 2108enable_secure (void)
1263{ 2109{
1264#ifdef _WIN32 2110#ifdef _WIN32
1265 return 0; 2111 return 0;
1266#else 2112#else
1267 return getuid () != geteuid () 2113 return getuid () != geteuid ()
1268 || getgid () != getegid (); 2114 || getgid () != getegid ();
1269#endif 2115#endif
1270} 2116}
1271 2117
1272unsigned int 2118unsigned int ecb_cold
1273ev_supported_backends (void) 2119ev_supported_backends (void)
1274{ 2120{
1275 unsigned int flags = 0; 2121 unsigned int flags = 0;
1276 2122
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2123 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2127 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1282 2128
1283 return flags; 2129 return flags;
1284} 2130}
1285 2131
1286unsigned int 2132unsigned int ecb_cold
1287ev_recommended_backends (void) 2133ev_recommended_backends (void)
1288{ 2134{
1289 unsigned int flags = ev_supported_backends (); 2135 unsigned int flags = ev_supported_backends ();
1290 2136
1291#ifndef __NetBSD__ 2137#ifndef __NetBSD__
… …
1296#ifdef __APPLE__ 2142#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 2143 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2144 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2145 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 2146#endif
2147#ifdef __FreeBSD__
2148 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2149#endif
1301 2150
1302 return flags; 2151 return flags;
1303} 2152}
1304 2153
1305unsigned int 2154unsigned int ecb_cold
1306ev_embeddable_backends (void) 2155ev_embeddable_backends (void)
1307{ 2156{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2157 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 2158
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2159 /* 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 */ 2160 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 2161 flags &= ~EVBACKEND_EPOLL;
1313 2162
1314 return flags; 2163 return flags;
1315} 2164}
1316 2165
1317unsigned int 2166unsigned int
1318ev_backend (EV_P) 2167ev_backend (EV_P)
1319{ 2168{
1320 return backend; 2169 return backend;
1321} 2170}
1322 2171
2172#if EV_FEATURE_API
1323unsigned int 2173unsigned int
1324ev_loop_count (EV_P) 2174ev_iteration (EV_P)
1325{ 2175{
1326 return loop_count; 2176 return loop_count;
2177}
2178
2179unsigned int
2180ev_depth (EV_P)
2181{
2182 return loop_depth;
1327} 2183}
1328 2184
1329void 2185void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2186ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331{ 2187{
… …
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2192ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337{ 2193{
1338 timeout_blocktime = interval; 2194 timeout_blocktime = interval;
1339} 2195}
1340 2196
2197void
2198ev_set_userdata (EV_P_ void *data)
2199{
2200 userdata = data;
2201}
2202
2203void *
2204ev_userdata (EV_P)
2205{
2206 return userdata;
2207}
2208
2209void
2210ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2211{
2212 invoke_cb = invoke_pending_cb;
2213}
2214
2215void
2216ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2217{
2218 release_cb = release;
2219 acquire_cb = acquire;
2220}
2221#endif
2222
2223/* initialise a loop structure, must be zero-initialised */
1341static void noinline 2224static void noinline ecb_cold
1342loop_init (EV_P_ unsigned int flags) 2225loop_init (EV_P_ unsigned int flags)
1343{ 2226{
1344 if (!backend) 2227 if (!backend)
1345 { 2228 {
2229 origflags = flags;
2230
1346#if EV_USE_REALTIME 2231#if EV_USE_REALTIME
1347 if (!have_realtime) 2232 if (!have_realtime)
1348 { 2233 {
1349 struct timespec ts; 2234 struct timespec ts;
1350 2235
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2246 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 2247 have_monotonic = 1;
1363 } 2248 }
1364#endif 2249#endif
1365 2250
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 */ 2251 /* pid check not overridable via env */
1381#ifndef _WIN32 2252#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 2253 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 2254 curpid = getpid ();
1384#endif 2255#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 2257 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 2258 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 2259 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 2260 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 2261
1391 if (!(flags & 0x0000ffffU)) 2262 ev_rt_now = ev_time ();
2263 mn_now = get_clock ();
2264 now_floor = mn_now;
2265 rtmn_diff = ev_rt_now - mn_now;
2266#if EV_FEATURE_API
2267 invoke_cb = ev_invoke_pending;
2268#endif
2269
2270 io_blocktime = 0.;
2271 timeout_blocktime = 0.;
2272 backend = 0;
2273 backend_fd = -1;
2274 sig_pending = 0;
2275#if EV_ASYNC_ENABLE
2276 async_pending = 0;
2277#endif
2278 pipe_write_skipped = 0;
2279 pipe_write_wanted = 0;
2280#if EV_USE_INOTIFY
2281 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2282#endif
2283#if EV_USE_SIGNALFD
2284 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2285#endif
2286
2287 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 2288 flags |= ev_recommended_backends ();
1393 2289
2290#if EV_USE_IOCP
2291 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2292#endif
1394#if EV_USE_PORT 2293#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2294 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 2295#endif
1397#if EV_USE_KQUEUE 2296#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2297 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 2304#endif
1406#if EV_USE_SELECT 2305#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2306 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 2307#endif
1409 2308
2309 ev_prepare_init (&pending_w, pendingcb);
2310
2311#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 2312 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 2313 ev_set_priority (&pipe_w, EV_MAXPRI);
2314#endif
1412 } 2315 }
1413} 2316}
1414 2317
1415static void noinline 2318/* free up a loop structure */
2319void ecb_cold
1416loop_destroy (EV_P) 2320ev_loop_destroy (EV_P)
1417{ 2321{
1418 int i; 2322 int i;
1419 2323
2324#if EV_MULTIPLICITY
2325 /* mimic free (0) */
2326 if (!EV_A)
2327 return;
2328#endif
2329
2330#if EV_CLEANUP_ENABLE
2331 /* queue cleanup watchers (and execute them) */
2332 if (expect_false (cleanupcnt))
2333 {
2334 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2335 EV_INVOKE_PENDING;
2336 }
2337#endif
2338
2339#if EV_CHILD_ENABLE
2340 if (ev_is_active (&childev))
2341 {
2342 ev_ref (EV_A); /* child watcher */
2343 ev_signal_stop (EV_A_ &childev);
2344 }
2345#endif
2346
1420 if (ev_is_active (&pipeev)) 2347 if (ev_is_active (&pipe_w))
1421 { 2348 {
1422 ev_ref (EV_A); /* signal watcher */ 2349 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 2350 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 2351
1425#if EV_USE_EVENTFD 2352#if EV_USE_EVENTFD
1426 if (evfd >= 0) 2353 if (evfd >= 0)
1427 close (evfd); 2354 close (evfd);
1428#endif 2355#endif
1429 2356
1430 if (evpipe [0] >= 0) 2357 if (evpipe [0] >= 0)
1431 { 2358 {
1432 close (evpipe [0]); 2359 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 2360 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 2361 }
1435 } 2362 }
2363
2364#if EV_USE_SIGNALFD
2365 if (ev_is_active (&sigfd_w))
2366 close (sigfd);
2367#endif
1436 2368
1437#if EV_USE_INOTIFY 2369#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 2370 if (fs_fd >= 0)
1439 close (fs_fd); 2371 close (fs_fd);
1440#endif 2372#endif
1441 2373
1442 if (backend_fd >= 0) 2374 if (backend_fd >= 0)
1443 close (backend_fd); 2375 close (backend_fd);
1444 2376
2377#if EV_USE_IOCP
2378 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2379#endif
1445#if EV_USE_PORT 2380#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2381 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 2382#endif
1448#if EV_USE_KQUEUE 2383#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2384 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 2399#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 2400 array_free (idle, [i]);
1466#endif 2401#endif
1467 } 2402 }
1468 2403
1469 ev_free (anfds); anfdmax = 0; 2404 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 2405
1471 /* have to use the microsoft-never-gets-it-right macro */ 2406 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 2407 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 2408 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 2409 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 2411 array_free (periodic, EMPTY);
1477#endif 2412#endif
1478#if EV_FORK_ENABLE 2413#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 2414 array_free (fork, EMPTY);
1480#endif 2415#endif
2416#if EV_CLEANUP_ENABLE
2417 array_free (cleanup, EMPTY);
2418#endif
1481 array_free (prepare, EMPTY); 2419 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 2420 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 2421#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 2422 array_free (async, EMPTY);
1485#endif 2423#endif
1486 2424
1487 backend = 0; 2425 backend = 0;
2426
2427#if EV_MULTIPLICITY
2428 if (ev_is_default_loop (EV_A))
2429#endif
2430 ev_default_loop_ptr = 0;
2431#if EV_MULTIPLICITY
2432 else
2433 ev_free (EV_A);
2434#endif
1488} 2435}
1489 2436
1490#if EV_USE_INOTIFY 2437#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 2438inline_size void infy_fork (EV_P);
1492#endif 2439#endif
… …
1505#endif 2452#endif
1506#if EV_USE_INOTIFY 2453#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 2454 infy_fork (EV_A);
1508#endif 2455#endif
1509 2456
1510 if (ev_is_active (&pipeev)) 2457 if (ev_is_active (&pipe_w))
1511 { 2458 {
1512 /* this "locks" the handlers against writing to the pipe */ 2459 /* 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 2460
1519 ev_ref (EV_A); 2461 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 2462 ev_io_stop (EV_A_ &pipe_w);
1521 2463
1522#if EV_USE_EVENTFD 2464#if EV_USE_EVENTFD
1523 if (evfd >= 0) 2465 if (evfd >= 0)
1524 close (evfd); 2466 close (evfd);
1525#endif 2467#endif
1526 2468
1527 if (evpipe [0] >= 0) 2469 if (evpipe [0] >= 0)
1528 { 2470 {
1529 close (evpipe [0]); 2471 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 2472 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 2473 }
1532 2474
2475#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 2476 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 2477 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 2478 pipecb (EV_A_ &pipe_w, EV_READ);
2479#endif
1536 } 2480 }
1537 2481
1538 postfork = 0; 2482 postfork = 0;
1539} 2483}
1540 2484
1541#if EV_MULTIPLICITY 2485#if EV_MULTIPLICITY
1542 2486
1543struct ev_loop * 2487struct ev_loop * ecb_cold
1544ev_loop_new (unsigned int flags) 2488ev_loop_new (unsigned int flags)
1545{ 2489{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2490 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 2491
1548 memset (loop, 0, sizeof (struct ev_loop)); 2492 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 2493 loop_init (EV_A_ flags);
1551 2494
1552 if (ev_backend (EV_A)) 2495 if (ev_backend (EV_A))
1553 return loop; 2496 return EV_A;
1554 2497
2498 ev_free (EV_A);
1555 return 0; 2499 return 0;
1556} 2500}
1557 2501
1558void 2502#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 2503
1571#if EV_VERIFY 2504#if EV_VERIFY
1572static void noinline 2505static void noinline ecb_cold
1573verify_watcher (EV_P_ W w) 2506verify_watcher (EV_P_ W w)
1574{ 2507{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2508 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 2509
1577 if (w->pending) 2510 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2511 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 2512}
1580 2513
1581static void noinline 2514static void noinline ecb_cold
1582verify_heap (EV_P_ ANHE *heap, int N) 2515verify_heap (EV_P_ ANHE *heap, int N)
1583{ 2516{
1584 int i; 2517 int i;
1585 2518
1586 for (i = HEAP0; i < N + HEAP0; ++i) 2519 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 2524
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2525 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 2526 }
1594} 2527}
1595 2528
1596static void noinline 2529static void noinline ecb_cold
1597array_verify (EV_P_ W *ws, int cnt) 2530array_verify (EV_P_ W *ws, int cnt)
1598{ 2531{
1599 while (cnt--) 2532 while (cnt--)
1600 { 2533 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2534 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 2535 verify_watcher (EV_A_ ws [cnt]);
1603 } 2536 }
1604} 2537}
1605#endif 2538#endif
1606 2539
1607void 2540#if EV_FEATURE_API
2541void ecb_cold
1608ev_loop_verify (EV_P) 2542ev_verify (EV_P)
1609{ 2543{
1610#if EV_VERIFY 2544#if EV_VERIFY
1611 int i; 2545 int i;
1612 WL w; 2546 WL w;
1613 2547
… …
1647#if EV_FORK_ENABLE 2581#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2582 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2583 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2584#endif
1651 2585
2586#if EV_CLEANUP_ENABLE
2587 assert (cleanupmax >= cleanupcnt);
2588 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2589#endif
2590
1652#if EV_ASYNC_ENABLE 2591#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2592 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2593 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2594#endif
1656 2595
2596#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2597 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2598 array_verify (EV_A_ (W *)prepares, preparecnt);
2599#endif
1659 2600
2601#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2602 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2603 array_verify (EV_A_ (W *)checks, checkcnt);
2604#endif
1662 2605
1663# if 0 2606# if 0
2607#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2608 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) 2609 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2610#endif
1666# endif 2611# endif
1667#endif 2612#endif
1668} 2613}
1669 2614#endif
1670#endif /* multiplicity */
1671 2615
1672#if EV_MULTIPLICITY 2616#if EV_MULTIPLICITY
1673struct ev_loop * 2617struct ev_loop * ecb_cold
1674ev_default_loop_init (unsigned int flags)
1675#else 2618#else
1676int 2619int
2620#endif
1677ev_default_loop (unsigned int flags) 2621ev_default_loop (unsigned int flags)
1678#endif
1679{ 2622{
1680 if (!ev_default_loop_ptr) 2623 if (!ev_default_loop_ptr)
1681 { 2624 {
1682#if EV_MULTIPLICITY 2625#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2626 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2627#else
1685 ev_default_loop_ptr = 1; 2628 ev_default_loop_ptr = 1;
1686#endif 2629#endif
1687 2630
1688 loop_init (EV_A_ flags); 2631 loop_init (EV_A_ flags);
1689 2632
1690 if (ev_backend (EV_A)) 2633 if (ev_backend (EV_A))
1691 { 2634 {
1692#ifndef _WIN32 2635#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2636 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2637 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2638 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2639 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2640#endif
… …
1702 2645
1703 return ev_default_loop_ptr; 2646 return ev_default_loop_ptr;
1704} 2647}
1705 2648
1706void 2649void
1707ev_default_destroy (void) 2650ev_loop_fork (EV_P)
1708{ 2651{
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 */ 2652 postfork = 1; /* must be in line with ev_default_fork */
1731} 2653}
1732 2654
1733/*****************************************************************************/ 2655/*****************************************************************************/
1734 2656
1735void 2657void
1736ev_invoke (EV_P_ void *w, int revents) 2658ev_invoke (EV_P_ void *w, int revents)
1737{ 2659{
1738 EV_CB_INVOKE ((W)w, revents); 2660 EV_CB_INVOKE ((W)w, revents);
1739} 2661}
1740 2662
1741inline_speed void 2663unsigned int
1742call_pending (EV_P) 2664ev_pending_count (EV_P)
2665{
2666 int pri;
2667 unsigned int count = 0;
2668
2669 for (pri = NUMPRI; pri--; )
2670 count += pendingcnt [pri];
2671
2672 return count;
2673}
2674
2675void noinline
2676ev_invoke_pending (EV_P)
1743{ 2677{
1744 int pri; 2678 int pri;
1745 2679
1746 for (pri = NUMPRI; pri--; ) 2680 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2681 while (pendingcnt [pri])
1748 { 2682 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2683 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2684
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; 2685 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2686 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2687 EV_FREQUENT_CHECK;
1758 }
1759 } 2688 }
1760} 2689}
1761 2690
1762#if EV_IDLE_ENABLE 2691#if EV_IDLE_ENABLE
2692/* make idle watchers pending. this handles the "call-idle */
2693/* only when higher priorities are idle" logic */
1763inline_size void 2694inline_size void
1764idle_reify (EV_P) 2695idle_reify (EV_P)
1765{ 2696{
1766 if (expect_false (idleall)) 2697 if (expect_false (idleall))
1767 { 2698 {
… …
1780 } 2711 }
1781 } 2712 }
1782} 2713}
1783#endif 2714#endif
1784 2715
2716/* make timers pending */
1785inline_size void 2717inline_size void
1786timers_reify (EV_P) 2718timers_reify (EV_P)
1787{ 2719{
1788 EV_FREQUENT_CHECK; 2720 EV_FREQUENT_CHECK;
1789 2721
… …
1813 EV_FREQUENT_CHECK; 2745 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2746 feed_reverse (EV_A_ (W)w);
1815 } 2747 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2748 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2749
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2750 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2751 }
1820} 2752}
1821 2753
1822#if EV_PERIODIC_ENABLE 2754#if EV_PERIODIC_ENABLE
2755
2756static void noinline
2757periodic_recalc (EV_P_ ev_periodic *w)
2758{
2759 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2760 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2761
2762 /* the above almost always errs on the low side */
2763 while (at <= ev_rt_now)
2764 {
2765 ev_tstamp nat = at + w->interval;
2766
2767 /* when resolution fails us, we use ev_rt_now */
2768 if (expect_false (nat == at))
2769 {
2770 at = ev_rt_now;
2771 break;
2772 }
2773
2774 at = nat;
2775 }
2776
2777 ev_at (w) = at;
2778}
2779
2780/* make periodics pending */
1823inline_size void 2781inline_size void
1824periodics_reify (EV_P) 2782periodics_reify (EV_P)
1825{ 2783{
1826 EV_FREQUENT_CHECK; 2784 EV_FREQUENT_CHECK;
1827 2785
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2803 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2804 downheap (periodics, periodiccnt, HEAP0);
1847 } 2805 }
1848 else if (w->interval) 2806 else if (w->interval)
1849 { 2807 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2808 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]); 2809 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2810 downheap (periodics, periodiccnt, HEAP0);
1866 } 2811 }
1867 else 2812 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2813 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2819
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2820 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2821 }
1877} 2822}
1878 2823
2824/* simply recalculate all periodics */
2825/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2826static void noinline ecb_cold
1880periodics_reschedule (EV_P) 2827periodics_reschedule (EV_P)
1881{ 2828{
1882 int i; 2829 int i;
1883 2830
1884 /* adjust periodics after time jump */ 2831 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2834 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2835
1889 if (w->reschedule_cb) 2836 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2837 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2838 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2839 periodic_recalc (EV_A_ w);
1893 2840
1894 ANHE_at_cache (periodics [i]); 2841 ANHE_at_cache (periodics [i]);
1895 } 2842 }
1896 2843
1897 reheap (periodics, periodiccnt); 2844 reheap (periodics, periodiccnt);
1898} 2845}
1899#endif 2846#endif
1900 2847
2848/* adjust all timers by a given offset */
1901static void noinline 2849static void noinline ecb_cold
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2850timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2851{
1904 int i; 2852 int i;
1905 2853
1906 for (i = 0; i < timercnt; ++i) 2854 for (i = 0; i < timercnt; ++i)
… …
1909 ANHE_w (*he)->at += adjust; 2857 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2858 ANHE_at_cache (*he);
1911 } 2859 }
1912} 2860}
1913 2861
2862/* fetch new monotonic and realtime times from the kernel */
2863/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2864inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2865time_update (EV_P_ ev_tstamp max_block)
1916{ 2866{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2867#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2868 if (expect_true (have_monotonic))
1921 { 2869 {
2870 int i;
1922 ev_tstamp odiff = rtmn_diff; 2871 ev_tstamp odiff = rtmn_diff;
1923 2872
1924 mn_now = get_clock (); 2873 mn_now = get_clock ();
1925 2874
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2875 /* 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 2891 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 2892 * in the unlikely event of having been preempted here.
1944 */ 2893 */
1945 for (i = 4; --i; ) 2894 for (i = 4; --i; )
1946 { 2895 {
2896 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 2897 rtmn_diff = ev_rt_now - mn_now;
1948 2898
2899 diff = odiff - rtmn_diff;
2900
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2901 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 2902 return; /* all is well */
1951 2903
1952 ev_rt_now = ev_time (); 2904 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 2905 mn_now = get_clock ();
1954 now_floor = mn_now; 2906 now_floor = mn_now;
… …
1976 2928
1977 mn_now = ev_rt_now; 2929 mn_now = ev_rt_now;
1978 } 2930 }
1979} 2931}
1980 2932
1981static int loop_done;
1982
1983void 2933void
1984ev_loop (EV_P_ int flags) 2934ev_run (EV_P_ int flags)
1985{ 2935{
2936#if EV_FEATURE_API
2937 ++loop_depth;
2938#endif
2939
2940 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2941
1986 loop_done = EVUNLOOP_CANCEL; 2942 loop_done = EVBREAK_CANCEL;
1987 2943
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2944 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 2945
1990 do 2946 do
1991 { 2947 {
1992#if EV_VERIFY >= 2 2948#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 2949 ev_verify (EV_A);
1994#endif 2950#endif
1995 2951
1996#ifndef _WIN32 2952#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 2953 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 2954 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 2962 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 2963 if (expect_false (postfork))
2008 if (forkcnt) 2964 if (forkcnt)
2009 { 2965 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2966 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 2967 EV_INVOKE_PENDING;
2012 } 2968 }
2013#endif 2969#endif
2014 2970
2971#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 2972 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 2973 if (expect_false (preparecnt))
2017 { 2974 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2975 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 2976 EV_INVOKE_PENDING;
2020 } 2977 }
2978#endif
2979
2980 if (expect_false (loop_done))
2981 break;
2021 2982
2022 /* we might have forked, so reify kernel state if necessary */ 2983 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 2984 if (expect_false (postfork))
2024 loop_fork (EV_A); 2985 loop_fork (EV_A);
2025 2986
… …
2029 /* calculate blocking time */ 2990 /* calculate blocking time */
2030 { 2991 {
2031 ev_tstamp waittime = 0.; 2992 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 2993 ev_tstamp sleeptime = 0.;
2033 2994
2995 /* remember old timestamp for io_blocktime calculation */
2996 ev_tstamp prev_mn_now = mn_now;
2997
2998 /* update time to cancel out callback processing overhead */
2999 time_update (EV_A_ 1e100);
3000
3001 /* from now on, we want a pipe-wake-up */
3002 pipe_write_wanted = 1;
3003
3004 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3005
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3006 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 3007 {
2036 /* update time to cancel out callback processing overhead */ 3008 waittime = MAX_BLOCKTIME;
2037 time_update (EV_A_ 1e100);
2038 3009
2039 if (timercnt) 3010 if (timercnt)
2040 { 3011 {
2041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3012 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2042 if (waittime > to) waittime = to; 3013 if (waittime > to) waittime = to;
2043 } 3014 }
2044 3015
2045#if EV_PERIODIC_ENABLE 3016#if EV_PERIODIC_ENABLE
2046 if (periodiccnt) 3017 if (periodiccnt)
2047 { 3018 {
2048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3019 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2049 if (waittime > to) waittime = to; 3020 if (waittime > to) waittime = to;
2050 } 3021 }
2051#endif 3022#endif
2052 3023
3024 /* don't let timeouts decrease the waittime below timeout_blocktime */
2053 if (expect_false (waittime < timeout_blocktime)) 3025 if (expect_false (waittime < timeout_blocktime))
2054 waittime = timeout_blocktime; 3026 waittime = timeout_blocktime;
2055 3027
2056 sleeptime = waittime - backend_fudge; 3028 /* at this point, we NEED to wait, so we have to ensure */
3029 /* to pass a minimum nonzero value to the backend */
3030 if (expect_false (waittime < backend_mintime))
3031 waittime = backend_mintime;
2057 3032
3033 /* extra check because io_blocktime is commonly 0 */
2058 if (expect_true (sleeptime > io_blocktime)) 3034 if (expect_false (io_blocktime))
2059 sleeptime = io_blocktime;
2060
2061 if (sleeptime)
2062 { 3035 {
3036 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3037
3038 if (sleeptime > waittime - backend_mintime)
3039 sleeptime = waittime - backend_mintime;
3040
3041 if (expect_true (sleeptime > 0.))
3042 {
2063 ev_sleep (sleeptime); 3043 ev_sleep (sleeptime);
2064 waittime -= sleeptime; 3044 waittime -= sleeptime;
3045 }
2065 } 3046 }
2066 } 3047 }
2067 3048
3049#if EV_FEATURE_API
2068 ++loop_count; 3050 ++loop_count;
3051#endif
3052 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2069 backend_poll (EV_A_ waittime); 3053 backend_poll (EV_A_ waittime);
3054 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3055
3056 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3057
3058 if (pipe_write_skipped)
3059 {
3060 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3061 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3062 }
3063
2070 3064
2071 /* update ev_rt_now, do magic */ 3065 /* update ev_rt_now, do magic */
2072 time_update (EV_A_ waittime + sleeptime); 3066 time_update (EV_A_ waittime + sleeptime);
2073 } 3067 }
2074 3068
… …
2081#if EV_IDLE_ENABLE 3075#if EV_IDLE_ENABLE
2082 /* queue idle watchers unless other events are pending */ 3076 /* queue idle watchers unless other events are pending */
2083 idle_reify (EV_A); 3077 idle_reify (EV_A);
2084#endif 3078#endif
2085 3079
3080#if EV_CHECK_ENABLE
2086 /* queue check watchers, to be executed first */ 3081 /* queue check watchers, to be executed first */
2087 if (expect_false (checkcnt)) 3082 if (expect_false (checkcnt))
2088 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3083 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3084#endif
2089 3085
2090 call_pending (EV_A); 3086 EV_INVOKE_PENDING;
2091 } 3087 }
2092 while (expect_true ( 3088 while (expect_true (
2093 activecnt 3089 activecnt
2094 && !loop_done 3090 && !loop_done
2095 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3091 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2096 )); 3092 ));
2097 3093
2098 if (loop_done == EVUNLOOP_ONE) 3094 if (loop_done == EVBREAK_ONE)
2099 loop_done = EVUNLOOP_CANCEL; 3095 loop_done = EVBREAK_CANCEL;
3096
3097#if EV_FEATURE_API
3098 --loop_depth;
3099#endif
2100} 3100}
2101 3101
2102void 3102void
2103ev_unloop (EV_P_ int how) 3103ev_break (EV_P_ int how)
2104{ 3104{
2105 loop_done = how; 3105 loop_done = how;
2106} 3106}
2107 3107
2108void 3108void
… …
2135 ev_tstamp mn_prev = mn_now; 3135 ev_tstamp mn_prev = mn_now;
2136 3136
2137 ev_now_update (EV_A); 3137 ev_now_update (EV_A);
2138 timers_reschedule (EV_A_ mn_now - mn_prev); 3138 timers_reschedule (EV_A_ mn_now - mn_prev);
2139#if EV_PERIODIC_ENABLE 3139#if EV_PERIODIC_ENABLE
3140 /* TODO: really do this? */
2140 periodics_reschedule (EV_A); 3141 periodics_reschedule (EV_A);
2141#endif 3142#endif
2142} 3143}
2143 3144
2144/*****************************************************************************/ 3145/*****************************************************************************/
3146/* singly-linked list management, used when the expected list length is short */
2145 3147
2146inline_size void 3148inline_size void
2147wlist_add (WL *head, WL elem) 3149wlist_add (WL *head, WL elem)
2148{ 3150{
2149 elem->next = *head; 3151 elem->next = *head;
… …
2153inline_size void 3155inline_size void
2154wlist_del (WL *head, WL elem) 3156wlist_del (WL *head, WL elem)
2155{ 3157{
2156 while (*head) 3158 while (*head)
2157 { 3159 {
2158 if (*head == elem) 3160 if (expect_true (*head == elem))
2159 { 3161 {
2160 *head = elem->next; 3162 *head = elem->next;
2161 return; 3163 break;
2162 } 3164 }
2163 3165
2164 head = &(*head)->next; 3166 head = &(*head)->next;
2165 } 3167 }
2166} 3168}
2167 3169
3170/* internal, faster, version of ev_clear_pending */
2168inline_speed void 3171inline_speed void
2169clear_pending (EV_P_ W w) 3172clear_pending (EV_P_ W w)
2170{ 3173{
2171 if (w->pending) 3174 if (w->pending)
2172 { 3175 {
2173 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3176 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2174 w->pending = 0; 3177 w->pending = 0;
2175 } 3178 }
2176} 3179}
2177 3180
2178int 3181int
… …
2182 int pending = w_->pending; 3185 int pending = w_->pending;
2183 3186
2184 if (expect_true (pending)) 3187 if (expect_true (pending))
2185 { 3188 {
2186 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3189 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3190 p->w = (W)&pending_w;
2187 w_->pending = 0; 3191 w_->pending = 0;
2188 p->w = 0;
2189 return p->events; 3192 return p->events;
2190 } 3193 }
2191 else 3194 else
2192 return 0; 3195 return 0;
2193} 3196}
2194 3197
2195inline_size void 3198inline_size void
2196pri_adjust (EV_P_ W w) 3199pri_adjust (EV_P_ W w)
2197{ 3200{
2198 int pri = w->priority; 3201 int pri = ev_priority (w);
2199 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3202 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2200 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3203 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2201 w->priority = pri; 3204 ev_set_priority (w, pri);
2202} 3205}
2203 3206
2204inline_speed void 3207inline_speed void
2205ev_start (EV_P_ W w, int active) 3208ev_start (EV_P_ W w, int active)
2206{ 3209{
… …
2225 3228
2226 if (expect_false (ev_is_active (w))) 3229 if (expect_false (ev_is_active (w)))
2227 return; 3230 return;
2228 3231
2229 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3232 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2230 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3233 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2231 3234
2232 EV_FREQUENT_CHECK; 3235 EV_FREQUENT_CHECK;
2233 3236
2234 ev_start (EV_A_ (W)w, 1); 3237 ev_start (EV_A_ (W)w, 1);
2235 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3238 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2236 wlist_add (&anfds[fd].head, (WL)w); 3239 wlist_add (&anfds[fd].head, (WL)w);
2237 3240
2238 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3241 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2239 w->events &= ~EV__IOFDSET; 3242 w->events &= ~EV__IOFDSET;
2240 3243
2241 EV_FREQUENT_CHECK; 3244 EV_FREQUENT_CHECK;
2242} 3245}
2243 3246
… …
2253 EV_FREQUENT_CHECK; 3256 EV_FREQUENT_CHECK;
2254 3257
2255 wlist_del (&anfds[w->fd].head, (WL)w); 3258 wlist_del (&anfds[w->fd].head, (WL)w);
2256 ev_stop (EV_A_ (W)w); 3259 ev_stop (EV_A_ (W)w);
2257 3260
2258 fd_change (EV_A_ w->fd, 1); 3261 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2259 3262
2260 EV_FREQUENT_CHECK; 3263 EV_FREQUENT_CHECK;
2261} 3264}
2262 3265
2263void noinline 3266void noinline
… …
2305 timers [active] = timers [timercnt + HEAP0]; 3308 timers [active] = timers [timercnt + HEAP0];
2306 adjustheap (timers, timercnt, active); 3309 adjustheap (timers, timercnt, active);
2307 } 3310 }
2308 } 3311 }
2309 3312
2310 EV_FREQUENT_CHECK;
2311
2312 ev_at (w) -= mn_now; 3313 ev_at (w) -= mn_now;
2313 3314
2314 ev_stop (EV_A_ (W)w); 3315 ev_stop (EV_A_ (W)w);
3316
3317 EV_FREQUENT_CHECK;
2315} 3318}
2316 3319
2317void noinline 3320void noinline
2318ev_timer_again (EV_P_ ev_timer *w) 3321ev_timer_again (EV_P_ ev_timer *w)
2319{ 3322{
2320 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
3324
3325 clear_pending (EV_A_ (W)w);
2321 3326
2322 if (ev_is_active (w)) 3327 if (ev_is_active (w))
2323 { 3328 {
2324 if (w->repeat) 3329 if (w->repeat)
2325 { 3330 {
… …
2337 } 3342 }
2338 3343
2339 EV_FREQUENT_CHECK; 3344 EV_FREQUENT_CHECK;
2340} 3345}
2341 3346
3347ev_tstamp
3348ev_timer_remaining (EV_P_ ev_timer *w)
3349{
3350 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3351}
3352
2342#if EV_PERIODIC_ENABLE 3353#if EV_PERIODIC_ENABLE
2343void noinline 3354void noinline
2344ev_periodic_start (EV_P_ ev_periodic *w) 3355ev_periodic_start (EV_P_ ev_periodic *w)
2345{ 3356{
2346 if (expect_false (ev_is_active (w))) 3357 if (expect_false (ev_is_active (w)))
… …
2349 if (w->reschedule_cb) 3360 if (w->reschedule_cb)
2350 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3361 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2351 else if (w->interval) 3362 else if (w->interval)
2352 { 3363 {
2353 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3364 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2354 /* this formula differs from the one in periodic_reify because we do not always round up */ 3365 periodic_recalc (EV_A_ w);
2355 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2356 } 3366 }
2357 else 3367 else
2358 ev_at (w) = w->offset; 3368 ev_at (w) = w->offset;
2359 3369
2360 EV_FREQUENT_CHECK; 3370 EV_FREQUENT_CHECK;
… …
2392 periodics [active] = periodics [periodiccnt + HEAP0]; 3402 periodics [active] = periodics [periodiccnt + HEAP0];
2393 adjustheap (periodics, periodiccnt, active); 3403 adjustheap (periodics, periodiccnt, active);
2394 } 3404 }
2395 } 3405 }
2396 3406
2397 EV_FREQUENT_CHECK;
2398
2399 ev_stop (EV_A_ (W)w); 3407 ev_stop (EV_A_ (W)w);
3408
3409 EV_FREQUENT_CHECK;
2400} 3410}
2401 3411
2402void noinline 3412void noinline
2403ev_periodic_again (EV_P_ ev_periodic *w) 3413ev_periodic_again (EV_P_ ev_periodic *w)
2404{ 3414{
… …
2410 3420
2411#ifndef SA_RESTART 3421#ifndef SA_RESTART
2412# define SA_RESTART 0 3422# define SA_RESTART 0
2413#endif 3423#endif
2414 3424
3425#if EV_SIGNAL_ENABLE
3426
2415void noinline 3427void noinline
2416ev_signal_start (EV_P_ ev_signal *w) 3428ev_signal_start (EV_P_ ev_signal *w)
2417{ 3429{
2418#if EV_MULTIPLICITY
2419 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2420#endif
2421 if (expect_false (ev_is_active (w))) 3430 if (expect_false (ev_is_active (w)))
2422 return; 3431 return;
2423 3432
2424 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3433 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2425 3434
2426 evpipe_init (EV_A); 3435#if EV_MULTIPLICITY
3436 assert (("libev: a signal must not be attached to two different loops",
3437 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2427 3438
2428 EV_FREQUENT_CHECK; 3439 signals [w->signum - 1].loop = EV_A;
3440#endif
2429 3441
3442 EV_FREQUENT_CHECK;
3443
3444#if EV_USE_SIGNALFD
3445 if (sigfd == -2)
2430 { 3446 {
2431#ifndef _WIN32 3447 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2432 sigset_t full, prev; 3448 if (sigfd < 0 && errno == EINVAL)
2433 sigfillset (&full); 3449 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2434 sigprocmask (SIG_SETMASK, &full, &prev);
2435#endif
2436 3450
2437 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3451 if (sigfd >= 0)
3452 {
3453 fd_intern (sigfd); /* doing it twice will not hurt */
2438 3454
2439#ifndef _WIN32 3455 sigemptyset (&sigfd_set);
2440 sigprocmask (SIG_SETMASK, &prev, 0); 3456
2441#endif 3457 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3458 ev_set_priority (&sigfd_w, EV_MAXPRI);
3459 ev_io_start (EV_A_ &sigfd_w);
3460 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3461 }
2442 } 3462 }
3463
3464 if (sigfd >= 0)
3465 {
3466 /* TODO: check .head */
3467 sigaddset (&sigfd_set, w->signum);
3468 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3469
3470 signalfd (sigfd, &sigfd_set, 0);
3471 }
3472#endif
2443 3473
2444 ev_start (EV_A_ (W)w, 1); 3474 ev_start (EV_A_ (W)w, 1);
2445 wlist_add (&signals [w->signum - 1].head, (WL)w); 3475 wlist_add (&signals [w->signum - 1].head, (WL)w);
2446 3476
2447 if (!((WL)w)->next) 3477 if (!((WL)w)->next)
3478# if EV_USE_SIGNALFD
3479 if (sigfd < 0) /*TODO*/
3480# endif
2448 { 3481 {
2449#if _WIN32 3482# ifdef _WIN32
3483 evpipe_init (EV_A);
3484
2450 signal (w->signum, ev_sighandler); 3485 signal (w->signum, ev_sighandler);
2451#else 3486# else
2452 struct sigaction sa; 3487 struct sigaction sa;
3488
3489 evpipe_init (EV_A);
3490
2453 sa.sa_handler = ev_sighandler; 3491 sa.sa_handler = ev_sighandler;
2454 sigfillset (&sa.sa_mask); 3492 sigfillset (&sa.sa_mask);
2455 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3493 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2456 sigaction (w->signum, &sa, 0); 3494 sigaction (w->signum, &sa, 0);
3495
3496 if (origflags & EVFLAG_NOSIGMASK)
3497 {
3498 sigemptyset (&sa.sa_mask);
3499 sigaddset (&sa.sa_mask, w->signum);
3500 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3501 }
2457#endif 3502#endif
2458 } 3503 }
2459 3504
2460 EV_FREQUENT_CHECK; 3505 EV_FREQUENT_CHECK;
2461} 3506}
2462 3507
2463void noinline 3508void noinline
… …
2471 3516
2472 wlist_del (&signals [w->signum - 1].head, (WL)w); 3517 wlist_del (&signals [w->signum - 1].head, (WL)w);
2473 ev_stop (EV_A_ (W)w); 3518 ev_stop (EV_A_ (W)w);
2474 3519
2475 if (!signals [w->signum - 1].head) 3520 if (!signals [w->signum - 1].head)
3521 {
3522#if EV_MULTIPLICITY
3523 signals [w->signum - 1].loop = 0; /* unattach from signal */
3524#endif
3525#if EV_USE_SIGNALFD
3526 if (sigfd >= 0)
3527 {
3528 sigset_t ss;
3529
3530 sigemptyset (&ss);
3531 sigaddset (&ss, w->signum);
3532 sigdelset (&sigfd_set, w->signum);
3533
3534 signalfd (sigfd, &sigfd_set, 0);
3535 sigprocmask (SIG_UNBLOCK, &ss, 0);
3536 }
3537 else
3538#endif
2476 signal (w->signum, SIG_DFL); 3539 signal (w->signum, SIG_DFL);
3540 }
2477 3541
2478 EV_FREQUENT_CHECK; 3542 EV_FREQUENT_CHECK;
2479} 3543}
3544
3545#endif
3546
3547#if EV_CHILD_ENABLE
2480 3548
2481void 3549void
2482ev_child_start (EV_P_ ev_child *w) 3550ev_child_start (EV_P_ ev_child *w)
2483{ 3551{
2484#if EV_MULTIPLICITY 3552#if EV_MULTIPLICITY
… …
2488 return; 3556 return;
2489 3557
2490 EV_FREQUENT_CHECK; 3558 EV_FREQUENT_CHECK;
2491 3559
2492 ev_start (EV_A_ (W)w, 1); 3560 ev_start (EV_A_ (W)w, 1);
2493 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3561 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2494 3562
2495 EV_FREQUENT_CHECK; 3563 EV_FREQUENT_CHECK;
2496} 3564}
2497 3565
2498void 3566void
… …
2502 if (expect_false (!ev_is_active (w))) 3570 if (expect_false (!ev_is_active (w)))
2503 return; 3571 return;
2504 3572
2505 EV_FREQUENT_CHECK; 3573 EV_FREQUENT_CHECK;
2506 3574
2507 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3575 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2508 ev_stop (EV_A_ (W)w); 3576 ev_stop (EV_A_ (W)w);
2509 3577
2510 EV_FREQUENT_CHECK; 3578 EV_FREQUENT_CHECK;
2511} 3579}
3580
3581#endif
2512 3582
2513#if EV_STAT_ENABLE 3583#if EV_STAT_ENABLE
2514 3584
2515# ifdef _WIN32 3585# ifdef _WIN32
2516# undef lstat 3586# undef lstat
… …
2522#define MIN_STAT_INTERVAL 0.1074891 3592#define MIN_STAT_INTERVAL 0.1074891
2523 3593
2524static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3594static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2525 3595
2526#if EV_USE_INOTIFY 3596#if EV_USE_INOTIFY
2527# define EV_INOTIFY_BUFSIZE 8192 3597
3598/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3599# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2528 3600
2529static void noinline 3601static void noinline
2530infy_add (EV_P_ ev_stat *w) 3602infy_add (EV_P_ ev_stat *w)
2531{ 3603{
2532 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); 3604 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);
2533 3605
2534 if (w->wd < 0) 3606 if (w->wd >= 0)
3607 {
3608 struct statfs sfs;
3609
3610 /* now local changes will be tracked by inotify, but remote changes won't */
3611 /* unless the filesystem is known to be local, we therefore still poll */
3612 /* also do poll on <2.6.25, but with normal frequency */
3613
3614 if (!fs_2625)
3615 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3616 else if (!statfs (w->path, &sfs)
3617 && (sfs.f_type == 0x1373 /* devfs */
3618 || sfs.f_type == 0xEF53 /* ext2/3 */
3619 || sfs.f_type == 0x3153464a /* jfs */
3620 || sfs.f_type == 0x52654973 /* reiser3 */
3621 || sfs.f_type == 0x01021994 /* tempfs */
3622 || sfs.f_type == 0x58465342 /* xfs */))
3623 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3624 else
3625 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2535 { 3626 }
3627 else
3628 {
3629 /* can't use inotify, continue to stat */
2536 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3630 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2537 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2538 3631
2539 /* monitor some parent directory for speedup hints */ 3632 /* if path is not there, monitor some parent directory for speedup hints */
2540 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3633 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2541 /* but an efficiency issue only */ 3634 /* but an efficiency issue only */
2542 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3635 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2543 { 3636 {
2544 char path [4096]; 3637 char path [4096];
… …
2554 if (!pend || pend == path) 3647 if (!pend || pend == path)
2555 break; 3648 break;
2556 3649
2557 *pend = 0; 3650 *pend = 0;
2558 w->wd = inotify_add_watch (fs_fd, path, mask); 3651 w->wd = inotify_add_watch (fs_fd, path, mask);
2559 } 3652 }
2560 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3653 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2561 } 3654 }
2562 } 3655 }
2563 3656
2564 if (w->wd >= 0) 3657 if (w->wd >= 0)
2565 {
2566 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3658 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2567 3659
2568 /* now local changes will be tracked by inotify, but remote changes won't */ 3660 /* now re-arm timer, if required */
2569 /* unless the filesystem it known to be local, we therefore still poll */ 3661 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2570 /* also do poll on <2.6.25, but with normal frequency */
2571 struct statfs sfs;
2572
2573 if (fs_2625 && !statfs (w->path, &sfs))
2574 if (sfs.f_type == 0x1373 /* devfs */
2575 || sfs.f_type == 0xEF53 /* ext2/3 */
2576 || sfs.f_type == 0x3153464a /* jfs */
2577 || sfs.f_type == 0x52654973 /* reiser3 */
2578 || sfs.f_type == 0x01021994 /* tempfs */
2579 || sfs.f_type == 0x58465342 /* xfs */)
2580 return;
2581
2582 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2583 ev_timer_again (EV_A_ &w->timer); 3662 ev_timer_again (EV_A_ &w->timer);
2584 } 3663 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2585} 3664}
2586 3665
2587static void noinline 3666static void noinline
2588infy_del (EV_P_ ev_stat *w) 3667infy_del (EV_P_ ev_stat *w)
2589{ 3668{
… …
2592 3671
2593 if (wd < 0) 3672 if (wd < 0)
2594 return; 3673 return;
2595 3674
2596 w->wd = -2; 3675 w->wd = -2;
2597 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3676 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2598 wlist_del (&fs_hash [slot].head, (WL)w); 3677 wlist_del (&fs_hash [slot].head, (WL)w);
2599 3678
2600 /* remove this watcher, if others are watching it, they will rearm */ 3679 /* remove this watcher, if others are watching it, they will rearm */
2601 inotify_rm_watch (fs_fd, wd); 3680 inotify_rm_watch (fs_fd, wd);
2602} 3681}
… …
2604static void noinline 3683static void noinline
2605infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3684infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2606{ 3685{
2607 if (slot < 0) 3686 if (slot < 0)
2608 /* overflow, need to check for all hash slots */ 3687 /* overflow, need to check for all hash slots */
2609 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3688 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2610 infy_wd (EV_A_ slot, wd, ev); 3689 infy_wd (EV_A_ slot, wd, ev);
2611 else 3690 else
2612 { 3691 {
2613 WL w_; 3692 WL w_;
2614 3693
2615 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3694 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2616 { 3695 {
2617 ev_stat *w = (ev_stat *)w_; 3696 ev_stat *w = (ev_stat *)w_;
2618 w_ = w_->next; /* lets us remove this watcher and all before it */ 3697 w_ = w_->next; /* lets us remove this watcher and all before it */
2619 3698
2620 if (w->wd == wd || wd == -1) 3699 if (w->wd == wd || wd == -1)
2621 { 3700 {
2622 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3701 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2623 { 3702 {
2624 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3703 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2625 w->wd = -1; 3704 w->wd = -1;
2626 infy_add (EV_A_ w); /* re-add, no matter what */ 3705 infy_add (EV_A_ w); /* re-add, no matter what */
2627 } 3706 }
2628 3707
2629 stat_timer_cb (EV_A_ &w->timer, 0); 3708 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2634 3713
2635static void 3714static void
2636infy_cb (EV_P_ ev_io *w, int revents) 3715infy_cb (EV_P_ ev_io *w, int revents)
2637{ 3716{
2638 char buf [EV_INOTIFY_BUFSIZE]; 3717 char buf [EV_INOTIFY_BUFSIZE];
2639 struct inotify_event *ev = (struct inotify_event *)buf;
2640 int ofs; 3718 int ofs;
2641 int len = read (fs_fd, buf, sizeof (buf)); 3719 int len = read (fs_fd, buf, sizeof (buf));
2642 3720
2643 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3721 for (ofs = 0; ofs < len; )
3722 {
3723 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2644 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3724 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3725 ofs += sizeof (struct inotify_event) + ev->len;
3726 }
2645} 3727}
2646 3728
2647inline_size void 3729inline_size void ecb_cold
2648check_2625 (EV_P) 3730ev_check_2625 (EV_P)
2649{ 3731{
2650 /* kernels < 2.6.25 are borked 3732 /* kernels < 2.6.25 are borked
2651 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3733 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2652 */ 3734 */
2653 struct utsname buf; 3735 if (ev_linux_version () < 0x020619)
2654 int major, minor, micro;
2655
2656 if (uname (&buf))
2657 return; 3736 return;
2658 3737
2659 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2660 return;
2661
2662 if (major < 2
2663 || (major == 2 && minor < 6)
2664 || (major == 2 && minor == 6 && micro < 25))
2665 return;
2666
2667 fs_2625 = 1; 3738 fs_2625 = 1;
3739}
3740
3741inline_size int
3742infy_newfd (void)
3743{
3744#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3745 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3746 if (fd >= 0)
3747 return fd;
3748#endif
3749 return inotify_init ();
2668} 3750}
2669 3751
2670inline_size void 3752inline_size void
2671infy_init (EV_P) 3753infy_init (EV_P)
2672{ 3754{
2673 if (fs_fd != -2) 3755 if (fs_fd != -2)
2674 return; 3756 return;
2675 3757
2676 fs_fd = -1; 3758 fs_fd = -1;
2677 3759
2678 check_2625 (EV_A); 3760 ev_check_2625 (EV_A);
2679 3761
2680 fs_fd = inotify_init (); 3762 fs_fd = infy_newfd ();
2681 3763
2682 if (fs_fd >= 0) 3764 if (fs_fd >= 0)
2683 { 3765 {
3766 fd_intern (fs_fd);
2684 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3767 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2685 ev_set_priority (&fs_w, EV_MAXPRI); 3768 ev_set_priority (&fs_w, EV_MAXPRI);
2686 ev_io_start (EV_A_ &fs_w); 3769 ev_io_start (EV_A_ &fs_w);
3770 ev_unref (EV_A);
2687 } 3771 }
2688} 3772}
2689 3773
2690inline_size void 3774inline_size void
2691infy_fork (EV_P) 3775infy_fork (EV_P)
… …
2693 int slot; 3777 int slot;
2694 3778
2695 if (fs_fd < 0) 3779 if (fs_fd < 0)
2696 return; 3780 return;
2697 3781
3782 ev_ref (EV_A);
3783 ev_io_stop (EV_A_ &fs_w);
2698 close (fs_fd); 3784 close (fs_fd);
2699 fs_fd = inotify_init (); 3785 fs_fd = infy_newfd ();
2700 3786
3787 if (fs_fd >= 0)
3788 {
3789 fd_intern (fs_fd);
3790 ev_io_set (&fs_w, fs_fd, EV_READ);
3791 ev_io_start (EV_A_ &fs_w);
3792 ev_unref (EV_A);
3793 }
3794
2701 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3795 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2702 { 3796 {
2703 WL w_ = fs_hash [slot].head; 3797 WL w_ = fs_hash [slot].head;
2704 fs_hash [slot].head = 0; 3798 fs_hash [slot].head = 0;
2705 3799
2706 while (w_) 3800 while (w_)
… …
2711 w->wd = -1; 3805 w->wd = -1;
2712 3806
2713 if (fs_fd >= 0) 3807 if (fs_fd >= 0)
2714 infy_add (EV_A_ w); /* re-add, no matter what */ 3808 infy_add (EV_A_ w); /* re-add, no matter what */
2715 else 3809 else
3810 {
3811 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3812 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2716 ev_timer_again (EV_A_ &w->timer); 3813 ev_timer_again (EV_A_ &w->timer);
3814 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3815 }
2717 } 3816 }
2718 } 3817 }
2719} 3818}
2720 3819
2721#endif 3820#endif
… …
2738static void noinline 3837static void noinline
2739stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3838stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2740{ 3839{
2741 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3840 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2742 3841
2743 /* we copy this here each the time so that */ 3842 ev_statdata prev = w->attr;
2744 /* prev has the old value when the callback gets invoked */
2745 w->prev = w->attr;
2746 ev_stat_stat (EV_A_ w); 3843 ev_stat_stat (EV_A_ w);
2747 3844
2748 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3845 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2749 if ( 3846 if (
2750 w->prev.st_dev != w->attr.st_dev 3847 prev.st_dev != w->attr.st_dev
2751 || w->prev.st_ino != w->attr.st_ino 3848 || prev.st_ino != w->attr.st_ino
2752 || w->prev.st_mode != w->attr.st_mode 3849 || prev.st_mode != w->attr.st_mode
2753 || w->prev.st_nlink != w->attr.st_nlink 3850 || prev.st_nlink != w->attr.st_nlink
2754 || w->prev.st_uid != w->attr.st_uid 3851 || prev.st_uid != w->attr.st_uid
2755 || w->prev.st_gid != w->attr.st_gid 3852 || prev.st_gid != w->attr.st_gid
2756 || w->prev.st_rdev != w->attr.st_rdev 3853 || prev.st_rdev != w->attr.st_rdev
2757 || w->prev.st_size != w->attr.st_size 3854 || prev.st_size != w->attr.st_size
2758 || w->prev.st_atime != w->attr.st_atime 3855 || prev.st_atime != w->attr.st_atime
2759 || w->prev.st_mtime != w->attr.st_mtime 3856 || prev.st_mtime != w->attr.st_mtime
2760 || w->prev.st_ctime != w->attr.st_ctime 3857 || prev.st_ctime != w->attr.st_ctime
2761 ) { 3858 ) {
3859 /* we only update w->prev on actual differences */
3860 /* in case we test more often than invoke the callback, */
3861 /* to ensure that prev is always different to attr */
3862 w->prev = prev;
3863
2762 #if EV_USE_INOTIFY 3864 #if EV_USE_INOTIFY
2763 if (fs_fd >= 0) 3865 if (fs_fd >= 0)
2764 { 3866 {
2765 infy_del (EV_A_ w); 3867 infy_del (EV_A_ w);
2766 infy_add (EV_A_ w); 3868 infy_add (EV_A_ w);
… …
2791 3893
2792 if (fs_fd >= 0) 3894 if (fs_fd >= 0)
2793 infy_add (EV_A_ w); 3895 infy_add (EV_A_ w);
2794 else 3896 else
2795#endif 3897#endif
3898 {
2796 ev_timer_again (EV_A_ &w->timer); 3899 ev_timer_again (EV_A_ &w->timer);
3900 ev_unref (EV_A);
3901 }
2797 3902
2798 ev_start (EV_A_ (W)w, 1); 3903 ev_start (EV_A_ (W)w, 1);
2799 3904
2800 EV_FREQUENT_CHECK; 3905 EV_FREQUENT_CHECK;
2801} 3906}
… …
2810 EV_FREQUENT_CHECK; 3915 EV_FREQUENT_CHECK;
2811 3916
2812#if EV_USE_INOTIFY 3917#if EV_USE_INOTIFY
2813 infy_del (EV_A_ w); 3918 infy_del (EV_A_ w);
2814#endif 3919#endif
3920
3921 if (ev_is_active (&w->timer))
3922 {
3923 ev_ref (EV_A);
2815 ev_timer_stop (EV_A_ &w->timer); 3924 ev_timer_stop (EV_A_ &w->timer);
3925 }
2816 3926
2817 ev_stop (EV_A_ (W)w); 3927 ev_stop (EV_A_ (W)w);
2818 3928
2819 EV_FREQUENT_CHECK; 3929 EV_FREQUENT_CHECK;
2820} 3930}
… …
2865 3975
2866 EV_FREQUENT_CHECK; 3976 EV_FREQUENT_CHECK;
2867} 3977}
2868#endif 3978#endif
2869 3979
3980#if EV_PREPARE_ENABLE
2870void 3981void
2871ev_prepare_start (EV_P_ ev_prepare *w) 3982ev_prepare_start (EV_P_ ev_prepare *w)
2872{ 3983{
2873 if (expect_false (ev_is_active (w))) 3984 if (expect_false (ev_is_active (w)))
2874 return; 3985 return;
… …
2900 4011
2901 ev_stop (EV_A_ (W)w); 4012 ev_stop (EV_A_ (W)w);
2902 4013
2903 EV_FREQUENT_CHECK; 4014 EV_FREQUENT_CHECK;
2904} 4015}
4016#endif
2905 4017
4018#if EV_CHECK_ENABLE
2906void 4019void
2907ev_check_start (EV_P_ ev_check *w) 4020ev_check_start (EV_P_ ev_check *w)
2908{ 4021{
2909 if (expect_false (ev_is_active (w))) 4022 if (expect_false (ev_is_active (w)))
2910 return; 4023 return;
… …
2936 4049
2937 ev_stop (EV_A_ (W)w); 4050 ev_stop (EV_A_ (W)w);
2938 4051
2939 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
2940} 4053}
4054#endif
2941 4055
2942#if EV_EMBED_ENABLE 4056#if EV_EMBED_ENABLE
2943void noinline 4057void noinline
2944ev_embed_sweep (EV_P_ ev_embed *w) 4058ev_embed_sweep (EV_P_ ev_embed *w)
2945{ 4059{
2946 ev_loop (w->other, EVLOOP_NONBLOCK); 4060 ev_run (w->other, EVRUN_NOWAIT);
2947} 4061}
2948 4062
2949static void 4063static void
2950embed_io_cb (EV_P_ ev_io *io, int revents) 4064embed_io_cb (EV_P_ ev_io *io, int revents)
2951{ 4065{
2952 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4066 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2953 4067
2954 if (ev_cb (w)) 4068 if (ev_cb (w))
2955 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4069 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2956 else 4070 else
2957 ev_loop (w->other, EVLOOP_NONBLOCK); 4071 ev_run (w->other, EVRUN_NOWAIT);
2958} 4072}
2959 4073
2960static void 4074static void
2961embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4075embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2962{ 4076{
2963 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4077 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2964 4078
2965 { 4079 {
2966 struct ev_loop *loop = w->other; 4080 EV_P = w->other;
2967 4081
2968 while (fdchangecnt) 4082 while (fdchangecnt)
2969 { 4083 {
2970 fd_reify (EV_A); 4084 fd_reify (EV_A);
2971 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4085 ev_run (EV_A_ EVRUN_NOWAIT);
2972 } 4086 }
2973 } 4087 }
2974} 4088}
2975 4089
2976static void 4090static void
… …
2979 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4093 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2980 4094
2981 ev_embed_stop (EV_A_ w); 4095 ev_embed_stop (EV_A_ w);
2982 4096
2983 { 4097 {
2984 struct ev_loop *loop = w->other; 4098 EV_P = w->other;
2985 4099
2986 ev_loop_fork (EV_A); 4100 ev_loop_fork (EV_A);
2987 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4101 ev_run (EV_A_ EVRUN_NOWAIT);
2988 } 4102 }
2989 4103
2990 ev_embed_start (EV_A_ w); 4104 ev_embed_start (EV_A_ w);
2991} 4105}
2992 4106
… …
3003{ 4117{
3004 if (expect_false (ev_is_active (w))) 4118 if (expect_false (ev_is_active (w)))
3005 return; 4119 return;
3006 4120
3007 { 4121 {
3008 struct ev_loop *loop = w->other; 4122 EV_P = w->other;
3009 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4123 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3010 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4124 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3011 } 4125 }
3012 4126
3013 EV_FREQUENT_CHECK; 4127 EV_FREQUENT_CHECK;
… …
3040 4154
3041 ev_io_stop (EV_A_ &w->io); 4155 ev_io_stop (EV_A_ &w->io);
3042 ev_prepare_stop (EV_A_ &w->prepare); 4156 ev_prepare_stop (EV_A_ &w->prepare);
3043 ev_fork_stop (EV_A_ &w->fork); 4157 ev_fork_stop (EV_A_ &w->fork);
3044 4158
4159 ev_stop (EV_A_ (W)w);
4160
3045 EV_FREQUENT_CHECK; 4161 EV_FREQUENT_CHECK;
3046} 4162}
3047#endif 4163#endif
3048 4164
3049#if EV_FORK_ENABLE 4165#if EV_FORK_ENABLE
… …
3082 4198
3083 EV_FREQUENT_CHECK; 4199 EV_FREQUENT_CHECK;
3084} 4200}
3085#endif 4201#endif
3086 4202
4203#if EV_CLEANUP_ENABLE
4204void
4205ev_cleanup_start (EV_P_ ev_cleanup *w)
4206{
4207 if (expect_false (ev_is_active (w)))
4208 return;
4209
4210 EV_FREQUENT_CHECK;
4211
4212 ev_start (EV_A_ (W)w, ++cleanupcnt);
4213 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4214 cleanups [cleanupcnt - 1] = w;
4215
4216 /* cleanup watchers should never keep a refcount on the loop */
4217 ev_unref (EV_A);
4218 EV_FREQUENT_CHECK;
4219}
4220
4221void
4222ev_cleanup_stop (EV_P_ ev_cleanup *w)
4223{
4224 clear_pending (EV_A_ (W)w);
4225 if (expect_false (!ev_is_active (w)))
4226 return;
4227
4228 EV_FREQUENT_CHECK;
4229 ev_ref (EV_A);
4230
4231 {
4232 int active = ev_active (w);
4233
4234 cleanups [active - 1] = cleanups [--cleanupcnt];
4235 ev_active (cleanups [active - 1]) = active;
4236 }
4237
4238 ev_stop (EV_A_ (W)w);
4239
4240 EV_FREQUENT_CHECK;
4241}
4242#endif
4243
3087#if EV_ASYNC_ENABLE 4244#if EV_ASYNC_ENABLE
3088void 4245void
3089ev_async_start (EV_P_ ev_async *w) 4246ev_async_start (EV_P_ ev_async *w)
3090{ 4247{
3091 if (expect_false (ev_is_active (w))) 4248 if (expect_false (ev_is_active (w)))
3092 return; 4249 return;
3093 4250
4251 w->sent = 0;
4252
3094 evpipe_init (EV_A); 4253 evpipe_init (EV_A);
3095 4254
3096 EV_FREQUENT_CHECK; 4255 EV_FREQUENT_CHECK;
3097 4256
3098 ev_start (EV_A_ (W)w, ++asynccnt); 4257 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3125 4284
3126void 4285void
3127ev_async_send (EV_P_ ev_async *w) 4286ev_async_send (EV_P_ ev_async *w)
3128{ 4287{
3129 w->sent = 1; 4288 w->sent = 1;
3130 evpipe_write (EV_A_ &gotasync); 4289 evpipe_write (EV_A_ &async_pending);
3131} 4290}
3132#endif 4291#endif
3133 4292
3134/*****************************************************************************/ 4293/*****************************************************************************/
3135 4294
… …
3175{ 4334{
3176 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4335 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3177 4336
3178 if (expect_false (!once)) 4337 if (expect_false (!once))
3179 { 4338 {
3180 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4339 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3181 return; 4340 return;
3182 } 4341 }
3183 4342
3184 once->cb = cb; 4343 once->cb = cb;
3185 once->arg = arg; 4344 once->arg = arg;
… …
3199 } 4358 }
3200} 4359}
3201 4360
3202/*****************************************************************************/ 4361/*****************************************************************************/
3203 4362
3204#if 0 4363#if EV_WALK_ENABLE
3205void 4364void ecb_cold
3206ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4365ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3207{ 4366{
3208 int i, j; 4367 int i, j;
3209 ev_watcher_list *wl, *wn; 4368 ev_watcher_list *wl, *wn;
3210 4369
… …
3225#if EV_USE_INOTIFY 4384#if EV_USE_INOTIFY
3226 if (ev_cb ((ev_io *)wl) == infy_cb) 4385 if (ev_cb ((ev_io *)wl) == infy_cb)
3227 ; 4386 ;
3228 else 4387 else
3229#endif 4388#endif
3230 if ((ev_io *)wl != &pipeev) 4389 if ((ev_io *)wl != &pipe_w)
3231 if (types & EV_IO) 4390 if (types & EV_IO)
3232 cb (EV_A_ EV_IO, wl); 4391 cb (EV_A_ EV_IO, wl);
3233 4392
3234 wl = wn; 4393 wl = wn;
3235 } 4394 }
… …
3254 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4413 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3255#endif 4414#endif
3256 4415
3257#if EV_IDLE_ENABLE 4416#if EV_IDLE_ENABLE
3258 if (types & EV_IDLE) 4417 if (types & EV_IDLE)
3259 for (j = NUMPRI; i--; ) 4418 for (j = NUMPRI; j--; )
3260 for (i = idlecnt [j]; i--; ) 4419 for (i = idlecnt [j]; i--; )
3261 cb (EV_A_ EV_IDLE, idles [j][i]); 4420 cb (EV_A_ EV_IDLE, idles [j][i]);
3262#endif 4421#endif
3263 4422
3264#if EV_FORK_ENABLE 4423#if EV_FORK_ENABLE
… …
3272 if (types & EV_ASYNC) 4431 if (types & EV_ASYNC)
3273 for (i = asynccnt; i--; ) 4432 for (i = asynccnt; i--; )
3274 cb (EV_A_ EV_ASYNC, asyncs [i]); 4433 cb (EV_A_ EV_ASYNC, asyncs [i]);
3275#endif 4434#endif
3276 4435
4436#if EV_PREPARE_ENABLE
3277 if (types & EV_PREPARE) 4437 if (types & EV_PREPARE)
3278 for (i = preparecnt; i--; ) 4438 for (i = preparecnt; i--; )
3279#if EV_EMBED_ENABLE 4439# if EV_EMBED_ENABLE
3280 if (ev_cb (prepares [i]) != embed_prepare_cb) 4440 if (ev_cb (prepares [i]) != embed_prepare_cb)
3281#endif 4441# endif
3282 cb (EV_A_ EV_PREPARE, prepares [i]); 4442 cb (EV_A_ EV_PREPARE, prepares [i]);
4443#endif
3283 4444
4445#if EV_CHECK_ENABLE
3284 if (types & EV_CHECK) 4446 if (types & EV_CHECK)
3285 for (i = checkcnt; i--; ) 4447 for (i = checkcnt; i--; )
3286 cb (EV_A_ EV_CHECK, checks [i]); 4448 cb (EV_A_ EV_CHECK, checks [i]);
4449#endif
3287 4450
4451#if EV_SIGNAL_ENABLE
3288 if (types & EV_SIGNAL) 4452 if (types & EV_SIGNAL)
3289 for (i = 0; i < signalmax; ++i) 4453 for (i = 0; i < EV_NSIG - 1; ++i)
3290 for (wl = signals [i].head; wl; ) 4454 for (wl = signals [i].head; wl; )
3291 { 4455 {
3292 wn = wl->next; 4456 wn = wl->next;
3293 cb (EV_A_ EV_SIGNAL, wl); 4457 cb (EV_A_ EV_SIGNAL, wl);
3294 wl = wn; 4458 wl = wn;
3295 } 4459 }
4460#endif
3296 4461
4462#if EV_CHILD_ENABLE
3297 if (types & EV_CHILD) 4463 if (types & EV_CHILD)
3298 for (i = EV_PID_HASHSIZE; i--; ) 4464 for (i = (EV_PID_HASHSIZE); i--; )
3299 for (wl = childs [i]; wl; ) 4465 for (wl = childs [i]; wl; )
3300 { 4466 {
3301 wn = wl->next; 4467 wn = wl->next;
3302 cb (EV_A_ EV_CHILD, wl); 4468 cb (EV_A_ EV_CHILD, wl);
3303 wl = wn; 4469 wl = wn;
3304 } 4470 }
4471#endif
3305/* EV_STAT 0x00001000 /* stat data changed */ 4472/* EV_STAT 0x00001000 /* stat data changed */
3306/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4473/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3307} 4474}
3308#endif 4475#endif
3309 4476
3310#if EV_MULTIPLICITY 4477#if EV_MULTIPLICITY
3311 #include "ev_wrap.h" 4478 #include "ev_wrap.h"
3312#endif 4479#endif
3313 4480
3314#ifdef __cplusplus
3315}
3316#endif
3317

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