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Comparing libev/ev.c (file contents):
Revision 1.287 by root, Mon Apr 20 19:45:58 2009 UTC vs.
Revision 1.403 by root, Wed Jan 18 12:13:14 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
… …
172# define WIN32_LEAN_AND_MEAN 194# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 195# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 196# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 197# define EV_SELECT_IS_WINSOCKET 1
176# endif 198# endif
199# undef EV_AVOID_STDIO
177#endif 200#endif
201
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
178 209
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 210/* this block tries to deduce configuration from header-defined symbols and defaults */
211
212/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG)
214/* use what's provided */
215#elif defined (NSIG)
216# define EV_NSIG (NSIG)
217#elif defined(_NSIG)
218# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX)
220# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX)
222# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX)
224# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG)
226# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG)
228# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE)
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig)
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else
234# error "unable to find value for NSIG, please report"
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif
239
240#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0
242#endif
180 243
181#ifndef EV_USE_CLOCK_SYSCALL 244#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 245# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 247# else
185# define EV_USE_CLOCK_SYSCALL 0 248# define EV_USE_CLOCK_SYSCALL 0
186# endif 249# endif
187#endif 250#endif
188 251
189#ifndef EV_USE_MONOTONIC 252#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 254# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 255# else
193# define EV_USE_MONOTONIC 0 256# define EV_USE_MONOTONIC 0
194# endif 257# endif
195#endif 258#endif
196 259
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 261# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 262#endif
200 263
201#ifndef EV_USE_NANOSLEEP 264#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 265# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 266# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 267# else
205# define EV_USE_NANOSLEEP 0 268# define EV_USE_NANOSLEEP 0
206# endif 269# endif
207#endif 270#endif
208 271
209#ifndef EV_USE_SELECT 272#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 273# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 274#endif
212 275
213#ifndef EV_USE_POLL 276#ifndef EV_USE_POLL
214# ifdef _WIN32 277# ifdef _WIN32
215# define EV_USE_POLL 0 278# define EV_USE_POLL 0
216# else 279# else
217# define EV_USE_POLL 1 280# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 281# endif
219#endif 282#endif
220 283
221#ifndef EV_USE_EPOLL 284#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 285# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 286# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 287# else
225# define EV_USE_EPOLL 0 288# define EV_USE_EPOLL 0
226# endif 289# endif
227#endif 290#endif
228 291
… …
234# define EV_USE_PORT 0 297# define EV_USE_PORT 0
235#endif 298#endif
236 299
237#ifndef EV_USE_INOTIFY 300#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 302# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 303# else
241# define EV_USE_INOTIFY 0 304# define EV_USE_INOTIFY 0
242# endif 305# endif
243#endif 306#endif
244 307
245#ifndef EV_PID_HASHSIZE 308#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 309# 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 310#endif
252 311
253#ifndef EV_INOTIFY_HASHSIZE 312#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 313# 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 314#endif
260 315
261#ifndef EV_USE_EVENTFD 316#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 317# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 318# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 319# else
265# define EV_USE_EVENTFD 0 320# define EV_USE_EVENTFD 0
321# endif
322#endif
323
324#ifndef EV_USE_SIGNALFD
325# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
326# define EV_USE_SIGNALFD EV_FEATURE_OS
327# else
328# define EV_USE_SIGNALFD 0
266# endif 329# endif
267#endif 330#endif
268 331
269#if 0 /* debugging */ 332#if 0 /* debugging */
270# define EV_VERIFY 3 333# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 334# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 335# define EV_HEAP_CACHE_AT 1
273#endif 336#endif
274 337
275#ifndef EV_VERIFY 338#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 339# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 340#endif
278 341
279#ifndef EV_USE_4HEAP 342#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 343# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 344#endif
282 345
283#ifndef EV_HEAP_CACHE_AT 346#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif
349
350/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
351/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h>
354# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1
358# else
359# undef EV_USE_CLOCK_SYSCALL
360# define EV_USE_CLOCK_SYSCALL 0
361# endif
285#endif 362#endif
286 363
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 364/* this block fixes any misconfiguration where we know we run into trouble otherwise */
365
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
288 371
289#ifndef CLOCK_MONOTONIC 372#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 373# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 374# define EV_USE_MONOTONIC 0
292#endif 375#endif
… …
300# undef EV_USE_INOTIFY 383# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 384# define EV_USE_INOTIFY 0
302#endif 385#endif
303 386
304#if !EV_USE_NANOSLEEP 387#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 388/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux)
306# include <sys/select.h> 390# include <sys/select.h>
307# endif 391# endif
308#endif 392#endif
309 393
310#if EV_USE_INOTIFY 394#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 395# include <sys/statfs.h>
313# include <sys/inotify.h> 396# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 397/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 398# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 399# undef EV_USE_INOTIFY
… …
320 403
321#if EV_SELECT_IS_WINSOCKET 404#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 405# include <winsock.h>
323#endif 406#endif
324 407
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 408#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 410# include <stdint.h>
337# ifdef __cplusplus 411# ifndef EFD_NONBLOCK
338extern "C" { 412# define EFD_NONBLOCK O_NONBLOCK
339# endif 413# endif
340int eventfd (unsigned int initval, int flags); 414# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 415# ifdef O_CLOEXEC
342} 416# define EFD_CLOEXEC O_CLOEXEC
417# else
418# define EFD_CLOEXEC 02000000
419# endif
343# endif 420# endif
421EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
422#endif
423
424#if EV_USE_SIGNALFD
425/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
426# include <stdint.h>
427# ifndef SFD_NONBLOCK
428# define SFD_NONBLOCK O_NONBLOCK
429# endif
430# ifndef SFD_CLOEXEC
431# ifdef O_CLOEXEC
432# define SFD_CLOEXEC O_CLOEXEC
433# else
434# define SFD_CLOEXEC 02000000
435# endif
436# endif
437EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
438
439struct signalfd_siginfo
440{
441 uint32_t ssi_signo;
442 char pad[128 - sizeof (uint32_t)];
443};
344#endif 444#endif
345 445
346/**/ 446/**/
347 447
348#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 450#else
351# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
352#endif 452#endif
353 453
354/* 454/*
355 * This is used to avoid floating point rounding problems. 455 * 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. 456 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 457 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 458#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
459/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 460
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 461#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) */ 462#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 */
367 463
464#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
465#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
466
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */
469/*
470 * libecb - http://software.schmorp.de/pkg/libecb
471 *
472 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved.
475 *
476 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met:
478 *
479 * 1. Redistributions of source code must retain the above copyright notice,
480 * this list of conditions and the following disclaimer.
481 *
482 * 2. Redistributions in binary form must reproduce the above copyright
483 * notice, this list of conditions and the following disclaimer in the
484 * documentation and/or other materials provided with the distribution.
485 *
486 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
487 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
488 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
489 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
490 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE.
496 */
497
498#ifndef ECB_H
499#define ECB_H
500
501#ifdef _WIN32
502 typedef signed char int8_t;
503 typedef unsigned char uint8_t;
504 typedef signed short int16_t;
505 typedef unsigned short uint16_t;
506 typedef signed int int32_t;
507 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 508 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 509 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 510 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t;
514 #endif
371#else 515#else
372# define expect(expr,value) (expr) 516 #include <inttypes.h>
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 517#endif
518
519/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place.
525 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
528 #define ECB_GCC_VERSION(major,minor) 0
529 #else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
377#endif 531 #endif
532#endif
378 533
534/*****************************************************************************/
535
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538
539#if ECB_NO_THREADS || ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0)
541#endif
542
543#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) || __SUNPRO_C >= 0x5110 || __SUNPRO_xC >= 0x5110
545 #if __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
549 #elif __amd64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #elif defined(__sparc)
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #StoreLoad | #LoadLoad | #StoreStore" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #StoreStore")
565 #endif
566 #endif
567#endif
568
569#ifndef ECB_MEMORY_FENCE
570 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
571 #define ECB_MEMORY_FENCE __sync_synchronize ()
572 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
573 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
574 #elif _MSC_VER >= 1400 /* VC++ 2005 */
575 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
576 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
577 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
578 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
579 #elif defined(_WIN32)
580 #include <WinNT.h>
581 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
582 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
583 #include <mbarrier.h>
584 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
585 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
586 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if !ECB_AVOID_PTHREADS
592 /*
593 * if you get undefined symbol references to pthread_mutex_lock,
594 * or failure to find pthread.h, then you should implement
595 * the ECB_MEMORY_FENCE operations for your cpu/compiler
596 * OR provide pthread.h and link against the posix thread library
597 * of your system.
598 */
599 #include <pthread.h>
600 #define ECB_NEEDS_PTHREADS 1
601 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
602
603 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
604 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
605 #endif
606#endif
607
608#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
609 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
610#endif
611
612#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
613 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
614#endif
615
616/*****************************************************************************/
617
618#define ECB_C99 (__STDC_VERSION__ >= 199901L)
619
620#if __cplusplus
621 #define ecb_inline static inline
622#elif ECB_GCC_VERSION(2,5)
623 #define ecb_inline static __inline__
624#elif ECB_C99
625 #define ecb_inline static inline
626#else
627 #define ecb_inline static
628#endif
629
630#if ECB_GCC_VERSION(3,3)
631 #define ecb_restrict __restrict__
632#elif ECB_C99
633 #define ecb_restrict restrict
634#else
635 #define ecb_restrict
636#endif
637
638typedef int ecb_bool;
639
640#define ECB_CONCAT_(a, b) a ## b
641#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
642#define ECB_STRINGIFY_(a) # a
643#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
644
645#define ecb_function_ ecb_inline
646
647#if ECB_GCC_VERSION(3,1)
648 #define ecb_attribute(attrlist) __attribute__(attrlist)
649 #define ecb_is_constant(expr) __builtin_constant_p (expr)
650 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
651 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
652#else
653 #define ecb_attribute(attrlist)
654 #define ecb_is_constant(expr) 0
655 #define ecb_expect(expr,value) (expr)
656 #define ecb_prefetch(addr,rw,locality)
657#endif
658
659/* no emulation for ecb_decltype */
660#if ECB_GCC_VERSION(4,5)
661 #define ecb_decltype(x) __decltype(x)
662#elif ECB_GCC_VERSION(3,0)
663 #define ecb_decltype(x) __typeof(x)
664#endif
665
666#define ecb_noinline ecb_attribute ((__noinline__))
667#define ecb_noreturn ecb_attribute ((__noreturn__))
668#define ecb_unused ecb_attribute ((__unused__))
669#define ecb_const ecb_attribute ((__const__))
670#define ecb_pure ecb_attribute ((__pure__))
671
672#if ECB_GCC_VERSION(4,3)
673 #define ecb_artificial ecb_attribute ((__artificial__))
674 #define ecb_hot ecb_attribute ((__hot__))
675 #define ecb_cold ecb_attribute ((__cold__))
676#else
677 #define ecb_artificial
678 #define ecb_hot
679 #define ecb_cold
680#endif
681
682/* put around conditional expressions if you are very sure that the */
683/* expression is mostly true or mostly false. note that these return */
684/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 685#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 686#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
687/* for compatibility to the rest of the world */
688#define ecb_likely(expr) ecb_expect_true (expr)
689#define ecb_unlikely(expr) ecb_expect_false (expr)
690
691/* count trailing zero bits and count # of one bits */
692#if ECB_GCC_VERSION(3,4)
693 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
694 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
695 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
696 #define ecb_ctz32(x) __builtin_ctz (x)
697 #define ecb_ctz64(x) __builtin_ctzll (x)
698 #define ecb_popcount32(x) __builtin_popcount (x)
699 /* no popcountll */
700#else
701 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
702 ecb_function_ int
703 ecb_ctz32 (uint32_t x)
704 {
705 int r = 0;
706
707 x &= ~x + 1; /* this isolates the lowest bit */
708
709#if ECB_branchless_on_i386
710 r += !!(x & 0xaaaaaaaa) << 0;
711 r += !!(x & 0xcccccccc) << 1;
712 r += !!(x & 0xf0f0f0f0) << 2;
713 r += !!(x & 0xff00ff00) << 3;
714 r += !!(x & 0xffff0000) << 4;
715#else
716 if (x & 0xaaaaaaaa) r += 1;
717 if (x & 0xcccccccc) r += 2;
718 if (x & 0xf0f0f0f0) r += 4;
719 if (x & 0xff00ff00) r += 8;
720 if (x & 0xffff0000) r += 16;
721#endif
722
723 return r;
724 }
725
726 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
727 ecb_function_ int
728 ecb_ctz64 (uint64_t x)
729 {
730 int shift = x & 0xffffffffU ? 0 : 32;
731 return ecb_ctz32 (x >> shift) + shift;
732 }
733
734 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
735 ecb_function_ int
736 ecb_popcount32 (uint32_t x)
737 {
738 x -= (x >> 1) & 0x55555555;
739 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
740 x = ((x >> 4) + x) & 0x0f0f0f0f;
741 x *= 0x01010101;
742
743 return x >> 24;
744 }
745
746 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
747 ecb_function_ int ecb_ld32 (uint32_t x)
748 {
749 int r = 0;
750
751 if (x >> 16) { x >>= 16; r += 16; }
752 if (x >> 8) { x >>= 8; r += 8; }
753 if (x >> 4) { x >>= 4; r += 4; }
754 if (x >> 2) { x >>= 2; r += 2; }
755 if (x >> 1) { r += 1; }
756
757 return r;
758 }
759
760 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
761 ecb_function_ int ecb_ld64 (uint64_t x)
762 {
763 int r = 0;
764
765 if (x >> 32) { x >>= 32; r += 32; }
766
767 return r + ecb_ld32 (x);
768 }
769#endif
770
771ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
772ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
773{
774 return ( (x * 0x0802U & 0x22110U)
775 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
776}
777
778ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
779ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
780{
781 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
782 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
783 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
784 x = ( x >> 8 ) | ( x << 8);
785
786 return x;
787}
788
789ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
790ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
791{
792 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
793 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
794 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
795 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
796 x = ( x >> 16 ) | ( x << 16);
797
798 return x;
799}
800
801/* popcount64 is only available on 64 bit cpus as gcc builtin */
802/* so for this version we are lazy */
803ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
804ecb_function_ int
805ecb_popcount64 (uint64_t x)
806{
807 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
808}
809
810ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
811ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
812ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
813ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
814ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
815ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
816ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
817ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
818
819ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
820ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
821ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
822ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
823ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
824ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
825ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
826ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
827
828#if ECB_GCC_VERSION(4,3)
829 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
830 #define ecb_bswap32(x) __builtin_bswap32 (x)
831 #define ecb_bswap64(x) __builtin_bswap64 (x)
832#else
833 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
834 ecb_function_ uint16_t
835 ecb_bswap16 (uint16_t x)
836 {
837 return ecb_rotl16 (x, 8);
838 }
839
840 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
841 ecb_function_ uint32_t
842 ecb_bswap32 (uint32_t x)
843 {
844 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
845 }
846
847 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
848 ecb_function_ uint64_t
849 ecb_bswap64 (uint64_t x)
850 {
851 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
852 }
853#endif
854
855#if ECB_GCC_VERSION(4,5)
856 #define ecb_unreachable() __builtin_unreachable ()
857#else
858 /* this seems to work fine, but gcc always emits a warning for it :/ */
859 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
860 ecb_function_ void ecb_unreachable (void) { }
861#endif
862
863/* try to tell the compiler that some condition is definitely true */
864#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
865
866ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
867ecb_function_ unsigned char
868ecb_byteorder_helper (void)
869{
870 const uint32_t u = 0x11223344;
871 return *(unsigned char *)&u;
872}
873
874ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
875ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
876ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
877ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
878
879#if ECB_GCC_VERSION(3,0) || ECB_C99
880 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
881#else
882 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
883#endif
884
885#if __cplusplus
886 template<typename T>
887 static inline T ecb_div_rd (T val, T div)
888 {
889 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
890 }
891 template<typename T>
892 static inline T ecb_div_ru (T val, T div)
893 {
894 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
895 }
896#else
897 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
898 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
899#endif
900
901#if ecb_cplusplus_does_not_suck
902 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
903 template<typename T, int N>
904 static inline int ecb_array_length (const T (&arr)[N])
905 {
906 return N;
907 }
908#else
909 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
910#endif
911
912#endif
913
914/* ECB.H END */
915
916#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
917/* if your architecture doesn't need memory fences, e.g. because it is
918 * single-cpu/core, or if you use libev in a project that doesn't use libev
919 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
920 * libev, in which cases the memory fences become nops.
921 * alternatively, you can remove this #error and link against libpthread,
922 * which will then provide the memory fences.
923 */
924# error "memory fences not defined for your architecture, please report"
925#endif
926
927#ifndef ECB_MEMORY_FENCE
928# define ECB_MEMORY_FENCE do { } while (0)
929# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
930# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
931#endif
932
933#define expect_false(cond) ecb_expect_false (cond)
934#define expect_true(cond) ecb_expect_true (cond)
935#define noinline ecb_noinline
936
381#define inline_size static inline 937#define inline_size ecb_inline
382 938
383#if EV_MINIMAL 939#if EV_FEATURE_CODE
940# define inline_speed ecb_inline
941#else
384# define inline_speed static noinline 942# define inline_speed static noinline
943#endif
944
945#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
946
947#if EV_MINPRI == EV_MAXPRI
948# define ABSPRI(w) (((W)w), 0)
385#else 949#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) 950# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
951#endif
391 952
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 953#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 954#define EMPTY2(a,b) /* used to suppress some warnings */
394 955
395typedef ev_watcher *W; 956typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 960#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 961#define ev_at(w) ((WT)(w))->at
401 962
402#if EV_USE_REALTIME 963#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 964/* 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 */ 965/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 966static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 967#endif
407 968
408#if EV_USE_MONOTONIC 969#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 970static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 971#endif
411 972
973#ifndef EV_FD_TO_WIN32_HANDLE
974# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
975#endif
976#ifndef EV_WIN32_HANDLE_TO_FD
977# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
978#endif
979#ifndef EV_WIN32_CLOSE_FD
980# define EV_WIN32_CLOSE_FD(fd) close (fd)
981#endif
982
412#ifdef _WIN32 983#ifdef _WIN32
413# include "ev_win32.c" 984# include "ev_win32.c"
414#endif 985#endif
415 986
416/*****************************************************************************/ 987/*****************************************************************************/
417 988
989/* define a suitable floor function (only used by periodics atm) */
990
991#if EV_USE_FLOOR
992# include <math.h>
993# define ev_floor(v) floor (v)
994#else
995
996#include <float.h>
997
998/* a floor() replacement function, should be independent of ev_tstamp type */
999static ev_tstamp noinline
1000ev_floor (ev_tstamp v)
1001{
1002 /* the choice of shift factor is not terribly important */
1003#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1004 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1005#else
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1007#endif
1008
1009 /* argument too large for an unsigned long? */
1010 if (expect_false (v >= shift))
1011 {
1012 ev_tstamp f;
1013
1014 if (v == v - 1.)
1015 return v; /* very large number */
1016
1017 f = shift * ev_floor (v * (1. / shift));
1018 return f + ev_floor (v - f);
1019 }
1020
1021 /* special treatment for negative args? */
1022 if (expect_false (v < 0.))
1023 {
1024 ev_tstamp f = -ev_floor (-v);
1025
1026 return f - (f == v ? 0 : 1);
1027 }
1028
1029 /* fits into an unsigned long */
1030 return (unsigned long)v;
1031}
1032
1033#endif
1034
1035/*****************************************************************************/
1036
1037#ifdef __linux
1038# include <sys/utsname.h>
1039#endif
1040
1041static unsigned int noinline ecb_cold
1042ev_linux_version (void)
1043{
1044#ifdef __linux
1045 unsigned int v = 0;
1046 struct utsname buf;
1047 int i;
1048 char *p = buf.release;
1049
1050 if (uname (&buf))
1051 return 0;
1052
1053 for (i = 3+1; --i; )
1054 {
1055 unsigned int c = 0;
1056
1057 for (;;)
1058 {
1059 if (*p >= '0' && *p <= '9')
1060 c = c * 10 + *p++ - '0';
1061 else
1062 {
1063 p += *p == '.';
1064 break;
1065 }
1066 }
1067
1068 v = (v << 8) | c;
1069 }
1070
1071 return v;
1072#else
1073 return 0;
1074#endif
1075}
1076
1077/*****************************************************************************/
1078
1079#if EV_AVOID_STDIO
1080static void noinline ecb_cold
1081ev_printerr (const char *msg)
1082{
1083 write (STDERR_FILENO, msg, strlen (msg));
1084}
1085#endif
1086
418static void (*syserr_cb)(const char *msg); 1087static void (*syserr_cb)(const char *msg);
419 1088
420void 1089void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1090ev_set_syserr_cb (void (*cb)(const char *msg))
422{ 1091{
423 syserr_cb = cb; 1092 syserr_cb = cb;
424} 1093}
425 1094
426static void noinline 1095static void noinline ecb_cold
427ev_syserr (const char *msg) 1096ev_syserr (const char *msg)
428{ 1097{
429 if (!msg) 1098 if (!msg)
430 msg = "(libev) system error"; 1099 msg = "(libev) system error";
431 1100
432 if (syserr_cb) 1101 if (syserr_cb)
433 syserr_cb (msg); 1102 syserr_cb (msg);
434 else 1103 else
435 { 1104 {
1105#if EV_AVOID_STDIO
1106 ev_printerr (msg);
1107 ev_printerr (": ");
1108 ev_printerr (strerror (errno));
1109 ev_printerr ("\n");
1110#else
436 perror (msg); 1111 perror (msg);
1112#endif
437 abort (); 1113 abort ();
438 } 1114 }
439} 1115}
440 1116
441static void * 1117static void *
442ev_realloc_emul (void *ptr, long size) 1118ev_realloc_emul (void *ptr, long size)
443{ 1119{
1120#if __GLIBC__
1121 return realloc (ptr, size);
1122#else
444 /* some systems, notably openbsd and darwin, fail to properly 1123 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1124 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1125 * the single unix specification, so work around them here.
447 */ 1126 */
448 1127
449 if (size) 1128 if (size)
450 return realloc (ptr, size); 1129 return realloc (ptr, size);
451 1130
452 free (ptr); 1131 free (ptr);
453 return 0; 1132 return 0;
1133#endif
454} 1134}
455 1135
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1136static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 1137
458void 1138void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1139ev_set_allocator (void *(*cb)(void *ptr, long size))
460{ 1140{
461 alloc = cb; 1141 alloc = cb;
462} 1142}
463 1143
… …
466{ 1146{
467 ptr = alloc (ptr, size); 1147 ptr = alloc (ptr, size);
468 1148
469 if (!ptr && size) 1149 if (!ptr && size)
470 { 1150 {
1151#if EV_AVOID_STDIO
1152 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1153#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1154 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1155#endif
472 abort (); 1156 abort ();
473 } 1157 }
474 1158
475 return ptr; 1159 return ptr;
476} 1160}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1162#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1163#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1164
481/*****************************************************************************/ 1165/*****************************************************************************/
482 1166
1167/* set in reify when reification needed */
1168#define EV_ANFD_REIFY 1
1169
1170/* file descriptor info structure */
483typedef struct 1171typedef struct
484{ 1172{
485 WL head; 1173 WL head;
486 unsigned char events; 1174 unsigned char events; /* the events watched for */
487 unsigned char reify; 1175 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 */ 1176 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 1177 unsigned char unused;
490#if EV_USE_EPOLL 1178#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 1179 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 1180#endif
493#if EV_SELECT_IS_WINSOCKET 1181#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 1182 SOCKET handle;
495#endif 1183#endif
1184#if EV_USE_IOCP
1185 OVERLAPPED or, ow;
1186#endif
496} ANFD; 1187} ANFD;
497 1188
1189/* stores the pending event set for a given watcher */
498typedef struct 1190typedef struct
499{ 1191{
500 W w; 1192 W w;
501 int events; 1193 int events; /* the pending event set for the given watcher */
502} ANPENDING; 1194} ANPENDING;
503 1195
504#if EV_USE_INOTIFY 1196#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 1197/* hash table entry per inotify-id */
506typedef struct 1198typedef struct
… …
509} ANFS; 1201} ANFS;
510#endif 1202#endif
511 1203
512/* Heap Entry */ 1204/* Heap Entry */
513#if EV_HEAP_CACHE_AT 1205#if EV_HEAP_CACHE_AT
1206 /* a heap element */
514 typedef struct { 1207 typedef struct {
515 ev_tstamp at; 1208 ev_tstamp at;
516 WT w; 1209 WT w;
517 } ANHE; 1210 } ANHE;
518 1211
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1212 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1213 #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 */ 1214 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 1215#else
1216 /* a heap element */
523 typedef WT ANHE; 1217 typedef WT ANHE;
524 1218
525 #define ANHE_w(he) (he) 1219 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 1220 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 1221 #define ANHE_at_cache(he)
… …
538 #undef VAR 1232 #undef VAR
539 }; 1233 };
540 #include "ev_wrap.h" 1234 #include "ev_wrap.h"
541 1235
542 static struct ev_loop default_loop_struct; 1236 static struct ev_loop default_loop_struct;
543 struct ev_loop *ev_default_loop_ptr; 1237 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
544 1238
545#else 1239#else
546 1240
547 ev_tstamp ev_rt_now; 1241 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; 1242 #define VAR(name,decl) static decl;
549 #include "ev_vars.h" 1243 #include "ev_vars.h"
550 #undef VAR 1244 #undef VAR
551 1245
552 static int ev_default_loop_ptr; 1246 static int ev_default_loop_ptr;
553 1247
554#endif 1248#endif
555 1249
1250#if EV_FEATURE_API
1251# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1252# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1253# define EV_INVOKE_PENDING invoke_cb (EV_A)
1254#else
1255# define EV_RELEASE_CB (void)0
1256# define EV_ACQUIRE_CB (void)0
1257# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1258#endif
1259
1260#define EVBREAK_RECURSE 0x80
1261
556/*****************************************************************************/ 1262/*****************************************************************************/
557 1263
1264#ifndef EV_HAVE_EV_TIME
558ev_tstamp 1265ev_tstamp
559ev_time (void) 1266ev_time (void)
560{ 1267{
561#if EV_USE_REALTIME 1268#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 1269 if (expect_true (have_realtime))
… …
569 1276
570 struct timeval tv; 1277 struct timeval tv;
571 gettimeofday (&tv, 0); 1278 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 1279 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 1280}
1281#endif
574 1282
575inline_size ev_tstamp 1283inline_size ev_tstamp
576get_clock (void) 1284get_clock (void)
577{ 1285{
578#if EV_USE_MONOTONIC 1286#if EV_USE_MONOTONIC
… …
601 if (delay > 0.) 1309 if (delay > 0.)
602 { 1310 {
603#if EV_USE_NANOSLEEP 1311#if EV_USE_NANOSLEEP
604 struct timespec ts; 1312 struct timespec ts;
605 1313
606 ts.tv_sec = (time_t)delay; 1314 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 1315 nanosleep (&ts, 0);
610#elif defined(_WIN32) 1316#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3)); 1317 Sleep ((unsigned long)(delay * 1e3));
612#else 1318#else
613 struct timeval tv; 1319 struct timeval tv;
614 1320
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 */ 1321 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1322 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 1323 /* by older ones */
1324 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 1325 select (0, 0, 0, 0, &tv);
622#endif 1326#endif
623 } 1327 }
624} 1328}
625 1329
626/*****************************************************************************/ 1330/*****************************************************************************/
627 1331
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1332#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 1333
1334/* find a suitable new size for the given array, */
1335/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 1336inline_size int
631array_nextsize (int elem, int cur, int cnt) 1337array_nextsize (int elem, int cur, int cnt)
632{ 1338{
633 int ncur = cur + 1; 1339 int ncur = cur + 1;
634 1340
635 do 1341 do
636 ncur <<= 1; 1342 ncur <<= 1;
637 while (cnt > ncur); 1343 while (cnt > ncur);
638 1344
639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1345 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1346 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
641 { 1347 {
642 ncur *= elem; 1348 ncur *= elem;
643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1349 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
644 ncur = ncur - sizeof (void *) * 4; 1350 ncur = ncur - sizeof (void *) * 4;
… …
646 } 1352 }
647 1353
648 return ncur; 1354 return ncur;
649} 1355}
650 1356
651static noinline void * 1357static void * noinline ecb_cold
652array_realloc (int elem, void *base, int *cur, int cnt) 1358array_realloc (int elem, void *base, int *cur, int cnt)
653{ 1359{
654 *cur = array_nextsize (elem, *cur, cnt); 1360 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 1361 return ev_realloc (base, elem * *cur);
656} 1362}
… …
659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1365 memset ((void *)(base), 0, sizeof (*(base)) * (count))
660 1366
661#define array_needsize(type,base,cur,cnt,init) \ 1367#define array_needsize(type,base,cur,cnt,init) \
662 if (expect_false ((cnt) > (cur))) \ 1368 if (expect_false ((cnt) > (cur))) \
663 { \ 1369 { \
664 int ocur_ = (cur); \ 1370 int ecb_unused ocur_ = (cur); \
665 (base) = (type *)array_realloc \ 1371 (base) = (type *)array_realloc \
666 (sizeof (type), (base), &(cur), (cnt)); \ 1372 (sizeof (type), (base), &(cur), (cnt)); \
667 init ((base) + (ocur_), (cur) - ocur_); \ 1373 init ((base) + (ocur_), (cur) - ocur_); \
668 } 1374 }
669 1375
… …
680#define array_free(stem, idx) \ 1386#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1387 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 1388
683/*****************************************************************************/ 1389/*****************************************************************************/
684 1390
1391/* dummy callback for pending events */
1392static void noinline
1393pendingcb (EV_P_ ev_prepare *w, int revents)
1394{
1395}
1396
685void noinline 1397void noinline
686ev_feed_event (EV_P_ void *w, int revents) 1398ev_feed_event (EV_P_ void *w, int revents)
687{ 1399{
688 W w_ = (W)w; 1400 W w_ = (W)w;
689 int pri = ABSPRI (w_); 1401 int pri = ABSPRI (w_);
… …
724} 1436}
725 1437
726/*****************************************************************************/ 1438/*****************************************************************************/
727 1439
728inline_speed void 1440inline_speed void
729fd_event (EV_P_ int fd, int revents) 1441fd_event_nocheck (EV_P_ int fd, int revents)
730{ 1442{
731 ANFD *anfd = anfds + fd; 1443 ANFD *anfd = anfds + fd;
732 ev_io *w; 1444 ev_io *w;
733 1445
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1446 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 1450 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 1451 ev_feed_event (EV_A_ (W)w, ev);
740 } 1452 }
741} 1453}
742 1454
1455/* do not submit kernel events for fds that have reify set */
1456/* because that means they changed while we were polling for new events */
1457inline_speed void
1458fd_event (EV_P_ int fd, int revents)
1459{
1460 ANFD *anfd = anfds + fd;
1461
1462 if (expect_true (!anfd->reify))
1463 fd_event_nocheck (EV_A_ fd, revents);
1464}
1465
743void 1466void
744ev_feed_fd_event (EV_P_ int fd, int revents) 1467ev_feed_fd_event (EV_P_ int fd, int revents)
745{ 1468{
746 if (fd >= 0 && fd < anfdmax) 1469 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 1470 fd_event_nocheck (EV_A_ fd, revents);
748} 1471}
749 1472
1473/* make sure the external fd watch events are in-sync */
1474/* with the kernel/libev internal state */
750inline_size void 1475inline_size void
751fd_reify (EV_P) 1476fd_reify (EV_P)
752{ 1477{
753 int i; 1478 int i;
1479
1480#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1481 for (i = 0; i < fdchangecnt; ++i)
1482 {
1483 int fd = fdchanges [i];
1484 ANFD *anfd = anfds + fd;
1485
1486 if (anfd->reify & EV__IOFDSET && anfd->head)
1487 {
1488 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1489
1490 if (handle != anfd->handle)
1491 {
1492 unsigned long arg;
1493
1494 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1495
1496 /* handle changed, but fd didn't - we need to do it in two steps */
1497 backend_modify (EV_A_ fd, anfd->events, 0);
1498 anfd->events = 0;
1499 anfd->handle = handle;
1500 }
1501 }
1502 }
1503#endif
754 1504
755 for (i = 0; i < fdchangecnt; ++i) 1505 for (i = 0; i < fdchangecnt; ++i)
756 { 1506 {
757 int fd = fdchanges [i]; 1507 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 1508 ANFD *anfd = anfds + fd;
759 ev_io *w; 1509 ev_io *w;
760 1510
761 unsigned char events = 0; 1511 unsigned char o_events = anfd->events;
1512 unsigned char o_reify = anfd->reify;
762 1513
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1514 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 1515
766#if EV_SELECT_IS_WINSOCKET 1516 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 1517 {
769 unsigned long arg; 1518 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 1519
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1520 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 1521 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 1522
774 #endif 1523 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1524 o_reify = EV__IOFDSET; /* actually |= */
776 } 1525 }
777#endif
778 1526
779 { 1527 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); 1528 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1529 }
790 1530
791 fdchangecnt = 0; 1531 fdchangecnt = 0;
792} 1532}
793 1533
1534/* something about the given fd changed */
794inline_size void 1535inline_size void
795fd_change (EV_P_ int fd, int flags) 1536fd_change (EV_P_ int fd, int flags)
796{ 1537{
797 unsigned char reify = anfds [fd].reify; 1538 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1539 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1544 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1545 fdchanges [fdchangecnt - 1] = fd;
805 } 1546 }
806} 1547}
807 1548
1549/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1550inline_speed void ecb_cold
809fd_kill (EV_P_ int fd) 1551fd_kill (EV_P_ int fd)
810{ 1552{
811 ev_io *w; 1553 ev_io *w;
812 1554
813 while ((w = (ev_io *)anfds [fd].head)) 1555 while ((w = (ev_io *)anfds [fd].head))
… …
815 ev_io_stop (EV_A_ w); 1557 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1558 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1559 }
818} 1560}
819 1561
1562/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1563inline_size int ecb_cold
821fd_valid (int fd) 1564fd_valid (int fd)
822{ 1565{
823#ifdef _WIN32 1566#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1567 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1568#else
826 return fcntl (fd, F_GETFD) != -1; 1569 return fcntl (fd, F_GETFD) != -1;
827#endif 1570#endif
828} 1571}
829 1572
830/* called on EBADF to verify fds */ 1573/* called on EBADF to verify fds */
831static void noinline 1574static void noinline ecb_cold
832fd_ebadf (EV_P) 1575fd_ebadf (EV_P)
833{ 1576{
834 int fd; 1577 int fd;
835 1578
836 for (fd = 0; fd < anfdmax; ++fd) 1579 for (fd = 0; fd < anfdmax; ++fd)
… …
838 if (!fd_valid (fd) && errno == EBADF) 1581 if (!fd_valid (fd) && errno == EBADF)
839 fd_kill (EV_A_ fd); 1582 fd_kill (EV_A_ fd);
840} 1583}
841 1584
842/* called on ENOMEM in select/poll to kill some fds and retry */ 1585/* called on ENOMEM in select/poll to kill some fds and retry */
843static void noinline 1586static void noinline ecb_cold
844fd_enomem (EV_P) 1587fd_enomem (EV_P)
845{ 1588{
846 int fd; 1589 int fd;
847 1590
848 for (fd = anfdmax; fd--; ) 1591 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1592 if (anfds [fd].events)
850 { 1593 {
851 fd_kill (EV_A_ fd); 1594 fd_kill (EV_A_ fd);
852 return; 1595 break;
853 } 1596 }
854} 1597}
855 1598
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1599/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1600static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1605 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1606 if (anfds [fd].events)
864 { 1607 {
865 anfds [fd].events = 0; 1608 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1609 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1610 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1611 }
869} 1612}
870 1613
1614/* used to prepare libev internal fd's */
1615/* this is not fork-safe */
1616inline_speed void
1617fd_intern (int fd)
1618{
1619#ifdef _WIN32
1620 unsigned long arg = 1;
1621 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1622#else
1623 fcntl (fd, F_SETFD, FD_CLOEXEC);
1624 fcntl (fd, F_SETFL, O_NONBLOCK);
1625#endif
1626}
1627
871/*****************************************************************************/ 1628/*****************************************************************************/
872 1629
873/* 1630/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1631 * 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 1632 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1633 * the branching factor of the d-tree.
877 */ 1634 */
878 1635
879/* 1636/*
… …
947 1704
948 for (;;) 1705 for (;;)
949 { 1706 {
950 int c = k << 1; 1707 int c = k << 1;
951 1708
952 if (c > N + HEAP0 - 1) 1709 if (c >= N + HEAP0)
953 break; 1710 break;
954 1711
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1712 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1713 ? 1 : 0;
957 1714
… …
989 1746
990 heap [k] = he; 1747 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1748 ev_active (ANHE_w (he)) = k;
992} 1749}
993 1750
1751/* move an element suitably so it is in a correct place */
994inline_size void 1752inline_size void
995adjustheap (ANHE *heap, int N, int k) 1753adjustheap (ANHE *heap, int N, int k)
996{ 1754{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1755 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1756 upheap (heap, k);
999 else 1757 else
1000 downheap (heap, N, k); 1758 downheap (heap, N, k);
1001} 1759}
1002 1760
… …
1012 upheap (heap, i + HEAP0); 1770 upheap (heap, i + HEAP0);
1013} 1771}
1014 1772
1015/*****************************************************************************/ 1773/*****************************************************************************/
1016 1774
1775/* associate signal watchers to a signal signal */
1017typedef struct 1776typedef struct
1018{ 1777{
1778 EV_ATOMIC_T pending;
1779#if EV_MULTIPLICITY
1780 EV_P;
1781#endif
1019 WL head; 1782 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1783} ANSIG;
1022 1784
1023static ANSIG *signals; 1785static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1786
1028/*****************************************************************************/ 1787/*****************************************************************************/
1029 1788
1030inline_speed void 1789#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 1790
1042static void noinline 1791static void noinline ecb_cold
1043evpipe_init (EV_P) 1792evpipe_init (EV_P)
1044{ 1793{
1045 if (!ev_is_active (&pipeev)) 1794 if (!ev_is_active (&pipe_w))
1046 { 1795 {
1047#if EV_USE_EVENTFD 1796# if EV_USE_EVENTFD
1797 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1798 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1799 evfd = eventfd (0, 0);
1800
1801 if (evfd >= 0)
1049 { 1802 {
1050 evpipe [0] = -1; 1803 evpipe [0] = -1;
1051 fd_intern (evfd); 1804 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1805 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1806 }
1054 else 1807 else
1055#endif 1808# endif
1056 { 1809 {
1057 while (pipe (evpipe)) 1810 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1811 ev_syserr ("(libev) error creating signal/async pipe");
1059 1812
1060 fd_intern (evpipe [0]); 1813 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1814 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1815 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1816 }
1064 1817
1065 ev_io_start (EV_A_ &pipeev); 1818 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1819 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1820 }
1068} 1821}
1069 1822
1070inline_size void 1823inline_speed void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1824evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1825{
1073 if (!*flag) 1826 if (expect_true (*flag))
1827 return;
1828
1829 *flag = 1;
1830
1831 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1832
1833 pipe_write_skipped = 1;
1834
1835 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1836
1837 if (pipe_write_wanted)
1074 { 1838 {
1839 int old_errno;
1840
1841 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1842
1075 int old_errno = errno; /* save errno because write might clobber it */ 1843 old_errno = errno; /* save errno because write will clobber it */
1076
1077 *flag = 1;
1078 1844
1079#if EV_USE_EVENTFD 1845#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1846 if (evfd >= 0)
1081 { 1847 {
1082 uint64_t counter = 1; 1848 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1849 write (evfd, &counter, sizeof (uint64_t));
1084 } 1850 }
1085 else 1851 else
1086#endif 1852#endif
1853 {
1854 /* win32 people keep sending patches that change this write() to send() */
1855 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1856 /* so when you think this write should be a send instead, please find out */
1857 /* where your send() is from - it's definitely not the microsoft send, and */
1858 /* tell me. thank you. */
1087 write (evpipe [1], &old_errno, 1); 1859 write (evpipe [1], &(evpipe [1]), 1);
1860 }
1088 1861
1089 errno = old_errno; 1862 errno = old_errno;
1090 } 1863 }
1091} 1864}
1092 1865
1866/* called whenever the libev signal pipe */
1867/* got some events (signal, async) */
1093static void 1868static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1869pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1870{
1871 int i;
1872
1873 if (revents & EV_READ)
1874 {
1096#if EV_USE_EVENTFD 1875#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1876 if (evfd >= 0)
1098 { 1877 {
1099 uint64_t counter; 1878 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1879 read (evfd, &counter, sizeof (uint64_t));
1101 } 1880 }
1102 else 1881 else
1103#endif 1882#endif
1104 { 1883 {
1105 char dummy; 1884 char dummy;
1885 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1886 read (evpipe [0], &dummy, 1);
1887 }
1888 }
1889
1890 pipe_write_skipped = 0;
1891
1892#if EV_SIGNAL_ENABLE
1893 if (sig_pending)
1107 } 1894 {
1895 sig_pending = 0;
1108 1896
1109 if (gotsig && ev_is_default_loop (EV_A)) 1897 for (i = EV_NSIG - 1; i--; )
1110 { 1898 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); 1899 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1900 }
1901#endif
1118 1902
1119#if EV_ASYNC_ENABLE 1903#if EV_ASYNC_ENABLE
1120 if (gotasync) 1904 if (async_pending)
1121 { 1905 {
1122 int i; 1906 async_pending = 0;
1123 gotasync = 0;
1124 1907
1125 for (i = asynccnt; i--; ) 1908 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1909 if (asyncs [i]->sent)
1127 { 1910 {
1128 asyncs [i]->sent = 0; 1911 asyncs [i]->sent = 0;
… …
1132#endif 1915#endif
1133} 1916}
1134 1917
1135/*****************************************************************************/ 1918/*****************************************************************************/
1136 1919
1920void
1921ev_feed_signal (int signum)
1922{
1923#if EV_MULTIPLICITY
1924 EV_P = signals [signum - 1].loop;
1925
1926 if (!EV_A)
1927 return;
1928#endif
1929
1930 if (!ev_active (&pipe_w))
1931 return;
1932
1933 signals [signum - 1].pending = 1;
1934 evpipe_write (EV_A_ &sig_pending);
1935}
1936
1137static void 1937static void
1138ev_sighandler (int signum) 1938ev_sighandler (int signum)
1139{ 1939{
1140#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct;
1142#endif
1143
1144#if _WIN32 1940#ifdef _WIN32
1145 signal (signum, ev_sighandler); 1941 signal (signum, ev_sighandler);
1146#endif 1942#endif
1147 1943
1148 signals [signum - 1].gotsig = 1; 1944 ev_feed_signal (signum);
1149 evpipe_write (EV_A_ &gotsig);
1150} 1945}
1151 1946
1152void noinline 1947void noinline
1153ev_feed_signal_event (EV_P_ int signum) 1948ev_feed_signal_event (EV_P_ int signum)
1154{ 1949{
1155 WL w; 1950 WL w;
1156 1951
1952 if (expect_false (signum <= 0 || signum > EV_NSIG))
1953 return;
1954
1955 --signum;
1956
1157#if EV_MULTIPLICITY 1957#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1958 /* it is permissible to try to feed a signal to the wrong loop */
1159#endif 1959 /* or, likely more useful, feeding a signal nobody is waiting for */
1160 1960
1161 --signum; 1961 if (expect_false (signals [signum].loop != EV_A))
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1962 return;
1963#endif
1165 1964
1166 signals [signum].gotsig = 0; 1965 signals [signum].pending = 0;
1167 1966
1168 for (w = signals [signum].head; w; w = w->next) 1967 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1968 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1969}
1171 1970
1971#if EV_USE_SIGNALFD
1972static void
1973sigfdcb (EV_P_ ev_io *iow, int revents)
1974{
1975 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1976
1977 for (;;)
1978 {
1979 ssize_t res = read (sigfd, si, sizeof (si));
1980
1981 /* not ISO-C, as res might be -1, but works with SuS */
1982 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1983 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1984
1985 if (res < (ssize_t)sizeof (si))
1986 break;
1987 }
1988}
1989#endif
1990
1991#endif
1992
1172/*****************************************************************************/ 1993/*****************************************************************************/
1173 1994
1995#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 1996static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 1997
1178static ev_signal childev; 1998static ev_signal childev;
1179 1999
1180#ifndef WIFCONTINUED 2000#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 2001# define WIFCONTINUED(status) 0
1182#endif 2002#endif
1183 2003
2004/* handle a single child status event */
1184inline_speed void 2005inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 2006child_reap (EV_P_ int chain, int pid, int status)
1186{ 2007{
1187 ev_child *w; 2008 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2009 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 2010
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2011 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 2012 {
1192 if ((w->pid == pid || !w->pid) 2013 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 2014 && (!traced || (w->flags & 1)))
1194 { 2015 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2016 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 2023
1203#ifndef WCONTINUED 2024#ifndef WCONTINUED
1204# define WCONTINUED 0 2025# define WCONTINUED 0
1205#endif 2026#endif
1206 2027
2028/* called on sigchld etc., calls waitpid */
1207static void 2029static void
1208childcb (EV_P_ ev_signal *sw, int revents) 2030childcb (EV_P_ ev_signal *sw, int revents)
1209{ 2031{
1210 int pid, status; 2032 int pid, status;
1211 2033
… …
1219 /* make sure we are called again until all children have been reaped */ 2041 /* 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 */ 2042 /* 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); 2043 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 2044
1223 child_reap (EV_A_ pid, pid, status); 2045 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 2046 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2047 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 2048}
1227 2049
1228#endif 2050#endif
1229 2051
1230/*****************************************************************************/ 2052/*****************************************************************************/
1231 2053
2054#if EV_USE_IOCP
2055# include "ev_iocp.c"
2056#endif
1232#if EV_USE_PORT 2057#if EV_USE_PORT
1233# include "ev_port.c" 2058# include "ev_port.c"
1234#endif 2059#endif
1235#if EV_USE_KQUEUE 2060#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 2061# include "ev_kqueue.c"
… …
1243#endif 2068#endif
1244#if EV_USE_SELECT 2069#if EV_USE_SELECT
1245# include "ev_select.c" 2070# include "ev_select.c"
1246#endif 2071#endif
1247 2072
1248int 2073int ecb_cold
1249ev_version_major (void) 2074ev_version_major (void)
1250{ 2075{
1251 return EV_VERSION_MAJOR; 2076 return EV_VERSION_MAJOR;
1252} 2077}
1253 2078
1254int 2079int ecb_cold
1255ev_version_minor (void) 2080ev_version_minor (void)
1256{ 2081{
1257 return EV_VERSION_MINOR; 2082 return EV_VERSION_MINOR;
1258} 2083}
1259 2084
1260/* return true if we are running with elevated privileges and should ignore env variables */ 2085/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 2086int inline_size ecb_cold
1262enable_secure (void) 2087enable_secure (void)
1263{ 2088{
1264#ifdef _WIN32 2089#ifdef _WIN32
1265 return 0; 2090 return 0;
1266#else 2091#else
1267 return getuid () != geteuid () 2092 return getuid () != geteuid ()
1268 || getgid () != getegid (); 2093 || getgid () != getegid ();
1269#endif 2094#endif
1270} 2095}
1271 2096
1272unsigned int 2097unsigned int ecb_cold
1273ev_supported_backends (void) 2098ev_supported_backends (void)
1274{ 2099{
1275 unsigned int flags = 0; 2100 unsigned int flags = 0;
1276 2101
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2102 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2106 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1282 2107
1283 return flags; 2108 return flags;
1284} 2109}
1285 2110
1286unsigned int 2111unsigned int ecb_cold
1287ev_recommended_backends (void) 2112ev_recommended_backends (void)
1288{ 2113{
1289 unsigned int flags = ev_supported_backends (); 2114 unsigned int flags = ev_supported_backends ();
1290 2115
1291#ifndef __NetBSD__ 2116#ifndef __NetBSD__
… …
1296#ifdef __APPLE__ 2121#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 2122 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2123 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2124 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 2125#endif
2126#ifdef __FreeBSD__
2127 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2128#endif
1301 2129
1302 return flags; 2130 return flags;
1303} 2131}
1304 2132
1305unsigned int 2133unsigned int ecb_cold
1306ev_embeddable_backends (void) 2134ev_embeddable_backends (void)
1307{ 2135{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2136 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 2137
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2138 /* 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 */ 2139 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 2140 flags &= ~EVBACKEND_EPOLL;
1313 2141
1314 return flags; 2142 return flags;
1315} 2143}
1316 2144
1317unsigned int 2145unsigned int
1318ev_backend (EV_P) 2146ev_backend (EV_P)
1319{ 2147{
1320 return backend; 2148 return backend;
1321} 2149}
1322 2150
2151#if EV_FEATURE_API
1323unsigned int 2152unsigned int
1324ev_loop_count (EV_P) 2153ev_iteration (EV_P)
1325{ 2154{
1326 return loop_count; 2155 return loop_count;
2156}
2157
2158unsigned int
2159ev_depth (EV_P)
2160{
2161 return loop_depth;
1327} 2162}
1328 2163
1329void 2164void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2165ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331{ 2166{
… …
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2171ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337{ 2172{
1338 timeout_blocktime = interval; 2173 timeout_blocktime = interval;
1339} 2174}
1340 2175
2176void
2177ev_set_userdata (EV_P_ void *data)
2178{
2179 userdata = data;
2180}
2181
2182void *
2183ev_userdata (EV_P)
2184{
2185 return userdata;
2186}
2187
2188void
2189ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2190{
2191 invoke_cb = invoke_pending_cb;
2192}
2193
2194void
2195ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2196{
2197 release_cb = release;
2198 acquire_cb = acquire;
2199}
2200#endif
2201
2202/* initialise a loop structure, must be zero-initialised */
1341static void noinline 2203static void noinline ecb_cold
1342loop_init (EV_P_ unsigned int flags) 2204loop_init (EV_P_ unsigned int flags)
1343{ 2205{
1344 if (!backend) 2206 if (!backend)
1345 { 2207 {
2208 origflags = flags;
2209
1346#if EV_USE_REALTIME 2210#if EV_USE_REALTIME
1347 if (!have_realtime) 2211 if (!have_realtime)
1348 { 2212 {
1349 struct timespec ts; 2213 struct timespec ts;
1350 2214
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2225 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 2226 have_monotonic = 1;
1363 } 2227 }
1364#endif 2228#endif
1365 2229
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 */ 2230 /* pid check not overridable via env */
1381#ifndef _WIN32 2231#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 2232 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 2233 curpid = getpid ();
1384#endif 2234#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 2236 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 2237 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 2238 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 2239 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 2240
1391 if (!(flags & 0x0000ffffU)) 2241 ev_rt_now = ev_time ();
2242 mn_now = get_clock ();
2243 now_floor = mn_now;
2244 rtmn_diff = ev_rt_now - mn_now;
2245#if EV_FEATURE_API
2246 invoke_cb = ev_invoke_pending;
2247#endif
2248
2249 io_blocktime = 0.;
2250 timeout_blocktime = 0.;
2251 backend = 0;
2252 backend_fd = -1;
2253 sig_pending = 0;
2254#if EV_ASYNC_ENABLE
2255 async_pending = 0;
2256#endif
2257 pipe_write_skipped = 0;
2258 pipe_write_wanted = 0;
2259#if EV_USE_INOTIFY
2260 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2261#endif
2262#if EV_USE_SIGNALFD
2263 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2264#endif
2265
2266 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 2267 flags |= ev_recommended_backends ();
1393 2268
2269#if EV_USE_IOCP
2270 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2271#endif
1394#if EV_USE_PORT 2272#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2273 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 2274#endif
1397#if EV_USE_KQUEUE 2275#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2276 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 2283#endif
1406#if EV_USE_SELECT 2284#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2285 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 2286#endif
1409 2287
2288 ev_prepare_init (&pending_w, pendingcb);
2289
2290#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 2291 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 2292 ev_set_priority (&pipe_w, EV_MAXPRI);
2293#endif
1412 } 2294 }
1413} 2295}
1414 2296
1415static void noinline 2297/* free up a loop structure */
2298void ecb_cold
1416loop_destroy (EV_P) 2299ev_loop_destroy (EV_P)
1417{ 2300{
1418 int i; 2301 int i;
1419 2302
2303#if EV_MULTIPLICITY
2304 /* mimic free (0) */
2305 if (!EV_A)
2306 return;
2307#endif
2308
2309#if EV_CLEANUP_ENABLE
2310 /* queue cleanup watchers (and execute them) */
2311 if (expect_false (cleanupcnt))
2312 {
2313 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2314 EV_INVOKE_PENDING;
2315 }
2316#endif
2317
2318#if EV_CHILD_ENABLE
2319 if (ev_is_active (&childev))
2320 {
2321 ev_ref (EV_A); /* child watcher */
2322 ev_signal_stop (EV_A_ &childev);
2323 }
2324#endif
2325
1420 if (ev_is_active (&pipeev)) 2326 if (ev_is_active (&pipe_w))
1421 { 2327 {
1422 ev_ref (EV_A); /* signal watcher */ 2328 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 2329 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 2330
1425#if EV_USE_EVENTFD 2331#if EV_USE_EVENTFD
1426 if (evfd >= 0) 2332 if (evfd >= 0)
1427 close (evfd); 2333 close (evfd);
1428#endif 2334#endif
1429 2335
1430 if (evpipe [0] >= 0) 2336 if (evpipe [0] >= 0)
1431 { 2337 {
1432 close (evpipe [0]); 2338 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 2339 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 2340 }
1435 } 2341 }
2342
2343#if EV_USE_SIGNALFD
2344 if (ev_is_active (&sigfd_w))
2345 close (sigfd);
2346#endif
1436 2347
1437#if EV_USE_INOTIFY 2348#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 2349 if (fs_fd >= 0)
1439 close (fs_fd); 2350 close (fs_fd);
1440#endif 2351#endif
1441 2352
1442 if (backend_fd >= 0) 2353 if (backend_fd >= 0)
1443 close (backend_fd); 2354 close (backend_fd);
1444 2355
2356#if EV_USE_IOCP
2357 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2358#endif
1445#if EV_USE_PORT 2359#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2360 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 2361#endif
1448#if EV_USE_KQUEUE 2362#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2363 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 2378#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 2379 array_free (idle, [i]);
1466#endif 2380#endif
1467 } 2381 }
1468 2382
1469 ev_free (anfds); anfdmax = 0; 2383 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 2384
1471 /* have to use the microsoft-never-gets-it-right macro */ 2385 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 2386 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 2387 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 2388 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 2390 array_free (periodic, EMPTY);
1477#endif 2391#endif
1478#if EV_FORK_ENABLE 2392#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 2393 array_free (fork, EMPTY);
1480#endif 2394#endif
2395#if EV_CLEANUP_ENABLE
2396 array_free (cleanup, EMPTY);
2397#endif
1481 array_free (prepare, EMPTY); 2398 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 2399 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 2400#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 2401 array_free (async, EMPTY);
1485#endif 2402#endif
1486 2403
1487 backend = 0; 2404 backend = 0;
2405
2406#if EV_MULTIPLICITY
2407 if (ev_is_default_loop (EV_A))
2408#endif
2409 ev_default_loop_ptr = 0;
2410#if EV_MULTIPLICITY
2411 else
2412 ev_free (EV_A);
2413#endif
1488} 2414}
1489 2415
1490#if EV_USE_INOTIFY 2416#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 2417inline_size void infy_fork (EV_P);
1492#endif 2418#endif
… …
1505#endif 2431#endif
1506#if EV_USE_INOTIFY 2432#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 2433 infy_fork (EV_A);
1508#endif 2434#endif
1509 2435
1510 if (ev_is_active (&pipeev)) 2436 if (ev_is_active (&pipe_w))
1511 { 2437 {
1512 /* this "locks" the handlers against writing to the pipe */ 2438 /* 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 2439
1519 ev_ref (EV_A); 2440 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 2441 ev_io_stop (EV_A_ &pipe_w);
1521 2442
1522#if EV_USE_EVENTFD 2443#if EV_USE_EVENTFD
1523 if (evfd >= 0) 2444 if (evfd >= 0)
1524 close (evfd); 2445 close (evfd);
1525#endif 2446#endif
1526 2447
1527 if (evpipe [0] >= 0) 2448 if (evpipe [0] >= 0)
1528 { 2449 {
1529 close (evpipe [0]); 2450 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 2451 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 2452 }
1532 2453
2454#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 2455 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 2456 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 2457 pipecb (EV_A_ &pipe_w, EV_READ);
2458#endif
1536 } 2459 }
1537 2460
1538 postfork = 0; 2461 postfork = 0;
1539} 2462}
1540 2463
1541#if EV_MULTIPLICITY 2464#if EV_MULTIPLICITY
1542 2465
1543struct ev_loop * 2466struct ev_loop * ecb_cold
1544ev_loop_new (unsigned int flags) 2467ev_loop_new (unsigned int flags)
1545{ 2468{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2469 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 2470
1548 memset (loop, 0, sizeof (struct ev_loop)); 2471 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 2472 loop_init (EV_A_ flags);
1551 2473
1552 if (ev_backend (EV_A)) 2474 if (ev_backend (EV_A))
1553 return loop; 2475 return EV_A;
1554 2476
2477 ev_free (EV_A);
1555 return 0; 2478 return 0;
1556} 2479}
1557 2480
1558void 2481#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 2482
1571#if EV_VERIFY 2483#if EV_VERIFY
1572static void noinline 2484static void noinline ecb_cold
1573verify_watcher (EV_P_ W w) 2485verify_watcher (EV_P_ W w)
1574{ 2486{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2487 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 2488
1577 if (w->pending) 2489 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2490 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 2491}
1580 2492
1581static void noinline 2493static void noinline ecb_cold
1582verify_heap (EV_P_ ANHE *heap, int N) 2494verify_heap (EV_P_ ANHE *heap, int N)
1583{ 2495{
1584 int i; 2496 int i;
1585 2497
1586 for (i = HEAP0; i < N + HEAP0; ++i) 2498 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 2503
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2504 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 2505 }
1594} 2506}
1595 2507
1596static void noinline 2508static void noinline ecb_cold
1597array_verify (EV_P_ W *ws, int cnt) 2509array_verify (EV_P_ W *ws, int cnt)
1598{ 2510{
1599 while (cnt--) 2511 while (cnt--)
1600 { 2512 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2513 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 2514 verify_watcher (EV_A_ ws [cnt]);
1603 } 2515 }
1604} 2516}
1605#endif 2517#endif
1606 2518
1607void 2519#if EV_FEATURE_API
2520void ecb_cold
1608ev_loop_verify (EV_P) 2521ev_verify (EV_P)
1609{ 2522{
1610#if EV_VERIFY 2523#if EV_VERIFY
1611 int i; 2524 int i;
1612 WL w; 2525 WL w;
1613 2526
… …
1647#if EV_FORK_ENABLE 2560#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2561 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2562 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2563#endif
1651 2564
2565#if EV_CLEANUP_ENABLE
2566 assert (cleanupmax >= cleanupcnt);
2567 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2568#endif
2569
1652#if EV_ASYNC_ENABLE 2570#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2571 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2572 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2573#endif
1656 2574
2575#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2576 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2577 array_verify (EV_A_ (W *)prepares, preparecnt);
2578#endif
1659 2579
2580#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2581 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2582 array_verify (EV_A_ (W *)checks, checkcnt);
2583#endif
1662 2584
1663# if 0 2585# if 0
2586#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2587 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) 2588 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2589#endif
1666# endif 2590# endif
1667#endif 2591#endif
1668} 2592}
1669 2593#endif
1670#endif /* multiplicity */
1671 2594
1672#if EV_MULTIPLICITY 2595#if EV_MULTIPLICITY
1673struct ev_loop * 2596struct ev_loop * ecb_cold
1674ev_default_loop_init (unsigned int flags)
1675#else 2597#else
1676int 2598int
2599#endif
1677ev_default_loop (unsigned int flags) 2600ev_default_loop (unsigned int flags)
1678#endif
1679{ 2601{
1680 if (!ev_default_loop_ptr) 2602 if (!ev_default_loop_ptr)
1681 { 2603 {
1682#if EV_MULTIPLICITY 2604#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2605 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2606#else
1685 ev_default_loop_ptr = 1; 2607 ev_default_loop_ptr = 1;
1686#endif 2608#endif
1687 2609
1688 loop_init (EV_A_ flags); 2610 loop_init (EV_A_ flags);
1689 2611
1690 if (ev_backend (EV_A)) 2612 if (ev_backend (EV_A))
1691 { 2613 {
1692#ifndef _WIN32 2614#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2615 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2616 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2617 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2618 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2619#endif
… …
1702 2624
1703 return ev_default_loop_ptr; 2625 return ev_default_loop_ptr;
1704} 2626}
1705 2627
1706void 2628void
1707ev_default_destroy (void) 2629ev_loop_fork (EV_P)
1708{ 2630{
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 */ 2631 postfork = 1; /* must be in line with ev_default_fork */
1731} 2632}
1732 2633
1733/*****************************************************************************/ 2634/*****************************************************************************/
1734 2635
1735void 2636void
1736ev_invoke (EV_P_ void *w, int revents) 2637ev_invoke (EV_P_ void *w, int revents)
1737{ 2638{
1738 EV_CB_INVOKE ((W)w, revents); 2639 EV_CB_INVOKE ((W)w, revents);
1739} 2640}
1740 2641
1741inline_speed void 2642unsigned int
1742call_pending (EV_P) 2643ev_pending_count (EV_P)
2644{
2645 int pri;
2646 unsigned int count = 0;
2647
2648 for (pri = NUMPRI; pri--; )
2649 count += pendingcnt [pri];
2650
2651 return count;
2652}
2653
2654void noinline
2655ev_invoke_pending (EV_P)
1743{ 2656{
1744 int pri; 2657 int pri;
1745 2658
1746 for (pri = NUMPRI; pri--; ) 2659 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2660 while (pendingcnt [pri])
1748 { 2661 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2662 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2663
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; 2664 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2665 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2666 EV_FREQUENT_CHECK;
1758 }
1759 } 2667 }
1760} 2668}
1761 2669
1762#if EV_IDLE_ENABLE 2670#if EV_IDLE_ENABLE
2671/* make idle watchers pending. this handles the "call-idle */
2672/* only when higher priorities are idle" logic */
1763inline_size void 2673inline_size void
1764idle_reify (EV_P) 2674idle_reify (EV_P)
1765{ 2675{
1766 if (expect_false (idleall)) 2676 if (expect_false (idleall))
1767 { 2677 {
… …
1780 } 2690 }
1781 } 2691 }
1782} 2692}
1783#endif 2693#endif
1784 2694
2695/* make timers pending */
1785inline_size void 2696inline_size void
1786timers_reify (EV_P) 2697timers_reify (EV_P)
1787{ 2698{
1788 EV_FREQUENT_CHECK; 2699 EV_FREQUENT_CHECK;
1789 2700
… …
1813 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2725 feed_reverse (EV_A_ (W)w);
1815 } 2726 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2727 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2728
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2729 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2730 }
1820} 2731}
1821 2732
1822#if EV_PERIODIC_ENABLE 2733#if EV_PERIODIC_ENABLE
2734
2735static void noinline
2736periodic_recalc (EV_P_ ev_periodic *w)
2737{
2738 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2739 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2740
2741 /* the above almost always errs on the low side */
2742 while (at <= ev_rt_now)
2743 {
2744 ev_tstamp nat = at + w->interval;
2745
2746 /* when resolution fails us, we use ev_rt_now */
2747 if (expect_false (nat == at))
2748 {
2749 at = ev_rt_now;
2750 break;
2751 }
2752
2753 at = nat;
2754 }
2755
2756 ev_at (w) = at;
2757}
2758
2759/* make periodics pending */
1823inline_size void 2760inline_size void
1824periodics_reify (EV_P) 2761periodics_reify (EV_P)
1825{ 2762{
1826 EV_FREQUENT_CHECK; 2763 EV_FREQUENT_CHECK;
1827 2764
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2782 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2783 downheap (periodics, periodiccnt, HEAP0);
1847 } 2784 }
1848 else if (w->interval) 2785 else if (w->interval)
1849 { 2786 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2787 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]); 2788 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2789 downheap (periodics, periodiccnt, HEAP0);
1866 } 2790 }
1867 else 2791 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2792 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2798
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2799 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2800 }
1877} 2801}
1878 2802
2803/* simply recalculate all periodics */
2804/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2805static void noinline ecb_cold
1880periodics_reschedule (EV_P) 2806periodics_reschedule (EV_P)
1881{ 2807{
1882 int i; 2808 int i;
1883 2809
1884 /* adjust periodics after time jump */ 2810 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2813 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2814
1889 if (w->reschedule_cb) 2815 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2816 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2817 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2818 periodic_recalc (EV_A_ w);
1893 2819
1894 ANHE_at_cache (periodics [i]); 2820 ANHE_at_cache (periodics [i]);
1895 } 2821 }
1896 2822
1897 reheap (periodics, periodiccnt); 2823 reheap (periodics, periodiccnt);
1898} 2824}
1899#endif 2825#endif
1900 2826
2827/* adjust all timers by a given offset */
1901static void noinline 2828static void noinline ecb_cold
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2829timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2830{
1904 int i; 2831 int i;
1905 2832
1906 for (i = 0; i < timercnt; ++i) 2833 for (i = 0; i < timercnt; ++i)
… …
1909 ANHE_w (*he)->at += adjust; 2836 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2837 ANHE_at_cache (*he);
1911 } 2838 }
1912} 2839}
1913 2840
2841/* fetch new monotonic and realtime times from the kernel */
2842/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2843inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2844time_update (EV_P_ ev_tstamp max_block)
1916{ 2845{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2846#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2847 if (expect_true (have_monotonic))
1921 { 2848 {
2849 int i;
1922 ev_tstamp odiff = rtmn_diff; 2850 ev_tstamp odiff = rtmn_diff;
1923 2851
1924 mn_now = get_clock (); 2852 mn_now = get_clock ();
1925 2853
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2854 /* 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 2870 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 2871 * in the unlikely event of having been preempted here.
1944 */ 2872 */
1945 for (i = 4; --i; ) 2873 for (i = 4; --i; )
1946 { 2874 {
2875 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 2876 rtmn_diff = ev_rt_now - mn_now;
1948 2877
2878 diff = odiff - rtmn_diff;
2879
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2880 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 2881 return; /* all is well */
1951 2882
1952 ev_rt_now = ev_time (); 2883 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 2884 mn_now = get_clock ();
1954 now_floor = mn_now; 2885 now_floor = mn_now;
… …
1976 2907
1977 mn_now = ev_rt_now; 2908 mn_now = ev_rt_now;
1978 } 2909 }
1979} 2910}
1980 2911
1981static int loop_done;
1982
1983void 2912void
1984ev_loop (EV_P_ int flags) 2913ev_run (EV_P_ int flags)
1985{ 2914{
2915#if EV_FEATURE_API
2916 ++loop_depth;
2917#endif
2918
2919 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2920
1986 loop_done = EVUNLOOP_CANCEL; 2921 loop_done = EVBREAK_CANCEL;
1987 2922
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2923 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 2924
1990 do 2925 do
1991 { 2926 {
1992#if EV_VERIFY >= 2 2927#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 2928 ev_verify (EV_A);
1994#endif 2929#endif
1995 2930
1996#ifndef _WIN32 2931#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 2932 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 2933 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 2941 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 2942 if (expect_false (postfork))
2008 if (forkcnt) 2943 if (forkcnt)
2009 { 2944 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2945 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 2946 EV_INVOKE_PENDING;
2012 } 2947 }
2013#endif 2948#endif
2014 2949
2950#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 2951 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 2952 if (expect_false (preparecnt))
2017 { 2953 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2954 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 2955 EV_INVOKE_PENDING;
2020 } 2956 }
2957#endif
2958
2959 if (expect_false (loop_done))
2960 break;
2021 2961
2022 /* we might have forked, so reify kernel state if necessary */ 2962 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 2963 if (expect_false (postfork))
2024 loop_fork (EV_A); 2964 loop_fork (EV_A);
2025 2965
… …
2029 /* calculate blocking time */ 2969 /* calculate blocking time */
2030 { 2970 {
2031 ev_tstamp waittime = 0.; 2971 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 2972 ev_tstamp sleeptime = 0.;
2033 2973
2974 /* remember old timestamp for io_blocktime calculation */
2975 ev_tstamp prev_mn_now = mn_now;
2976
2977 /* update time to cancel out callback processing overhead */
2978 time_update (EV_A_ 1e100);
2979
2980 /* from now on, we want a pipe-wake-up */
2981 pipe_write_wanted = 1;
2982
2983 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2984
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2985 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 2986 {
2036 /* update time to cancel out callback processing overhead */
2037 time_update (EV_A_ 1e100);
2038
2039 waittime = MAX_BLOCKTIME; 2987 waittime = MAX_BLOCKTIME;
2040 2988
2041 if (timercnt) 2989 if (timercnt)
2042 { 2990 {
2043 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2044 if (waittime > to) waittime = to; 2992 if (waittime > to) waittime = to;
2045 } 2993 }
2046 2994
2047#if EV_PERIODIC_ENABLE 2995#if EV_PERIODIC_ENABLE
2048 if (periodiccnt) 2996 if (periodiccnt)
2049 { 2997 {
2050 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2051 if (waittime > to) waittime = to; 2999 if (waittime > to) waittime = to;
2052 } 3000 }
2053#endif 3001#endif
2054 3002
3003 /* don't let timeouts decrease the waittime below timeout_blocktime */
2055 if (expect_false (waittime < timeout_blocktime)) 3004 if (expect_false (waittime < timeout_blocktime))
2056 waittime = timeout_blocktime; 3005 waittime = timeout_blocktime;
2057 3006
2058 sleeptime = waittime - backend_fudge; 3007 /* at this point, we NEED to wait, so we have to ensure */
3008 /* to pass a minimum nonzero value to the backend */
3009 if (expect_false (waittime < backend_mintime))
3010 waittime = backend_mintime;
2059 3011
3012 /* extra check because io_blocktime is commonly 0 */
2060 if (expect_true (sleeptime > io_blocktime)) 3013 if (expect_false (io_blocktime))
2061 sleeptime = io_blocktime;
2062
2063 if (sleeptime)
2064 { 3014 {
3015 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3016
3017 if (sleeptime > waittime - backend_mintime)
3018 sleeptime = waittime - backend_mintime;
3019
3020 if (expect_true (sleeptime > 0.))
3021 {
2065 ev_sleep (sleeptime); 3022 ev_sleep (sleeptime);
2066 waittime -= sleeptime; 3023 waittime -= sleeptime;
3024 }
2067 } 3025 }
2068 } 3026 }
2069 3027
3028#if EV_FEATURE_API
2070 ++loop_count; 3029 ++loop_count;
3030#endif
3031 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2071 backend_poll (EV_A_ waittime); 3032 backend_poll (EV_A_ waittime);
3033 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3034
3035 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3036
3037 if (pipe_write_skipped)
3038 {
3039 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3040 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3041 }
3042
2072 3043
2073 /* update ev_rt_now, do magic */ 3044 /* update ev_rt_now, do magic */
2074 time_update (EV_A_ waittime + sleeptime); 3045 time_update (EV_A_ waittime + sleeptime);
2075 } 3046 }
2076 3047
… …
2083#if EV_IDLE_ENABLE 3054#if EV_IDLE_ENABLE
2084 /* queue idle watchers unless other events are pending */ 3055 /* queue idle watchers unless other events are pending */
2085 idle_reify (EV_A); 3056 idle_reify (EV_A);
2086#endif 3057#endif
2087 3058
3059#if EV_CHECK_ENABLE
2088 /* queue check watchers, to be executed first */ 3060 /* queue check watchers, to be executed first */
2089 if (expect_false (checkcnt)) 3061 if (expect_false (checkcnt))
2090 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3062 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3063#endif
2091 3064
2092 call_pending (EV_A); 3065 EV_INVOKE_PENDING;
2093 } 3066 }
2094 while (expect_true ( 3067 while (expect_true (
2095 activecnt 3068 activecnt
2096 && !loop_done 3069 && !loop_done
2097 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3070 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2098 )); 3071 ));
2099 3072
2100 if (loop_done == EVUNLOOP_ONE) 3073 if (loop_done == EVBREAK_ONE)
2101 loop_done = EVUNLOOP_CANCEL; 3074 loop_done = EVBREAK_CANCEL;
3075
3076#if EV_FEATURE_API
3077 --loop_depth;
3078#endif
2102} 3079}
2103 3080
2104void 3081void
2105ev_unloop (EV_P_ int how) 3082ev_break (EV_P_ int how)
2106{ 3083{
2107 loop_done = how; 3084 loop_done = how;
2108} 3085}
2109 3086
2110void 3087void
… …
2137 ev_tstamp mn_prev = mn_now; 3114 ev_tstamp mn_prev = mn_now;
2138 3115
2139 ev_now_update (EV_A); 3116 ev_now_update (EV_A);
2140 timers_reschedule (EV_A_ mn_now - mn_prev); 3117 timers_reschedule (EV_A_ mn_now - mn_prev);
2141#if EV_PERIODIC_ENABLE 3118#if EV_PERIODIC_ENABLE
3119 /* TODO: really do this? */
2142 periodics_reschedule (EV_A); 3120 periodics_reschedule (EV_A);
2143#endif 3121#endif
2144} 3122}
2145 3123
2146/*****************************************************************************/ 3124/*****************************************************************************/
3125/* singly-linked list management, used when the expected list length is short */
2147 3126
2148inline_size void 3127inline_size void
2149wlist_add (WL *head, WL elem) 3128wlist_add (WL *head, WL elem)
2150{ 3129{
2151 elem->next = *head; 3130 elem->next = *head;
… …
2155inline_size void 3134inline_size void
2156wlist_del (WL *head, WL elem) 3135wlist_del (WL *head, WL elem)
2157{ 3136{
2158 while (*head) 3137 while (*head)
2159 { 3138 {
2160 if (*head == elem) 3139 if (expect_true (*head == elem))
2161 { 3140 {
2162 *head = elem->next; 3141 *head = elem->next;
2163 return; 3142 break;
2164 } 3143 }
2165 3144
2166 head = &(*head)->next; 3145 head = &(*head)->next;
2167 } 3146 }
2168} 3147}
2169 3148
3149/* internal, faster, version of ev_clear_pending */
2170inline_speed void 3150inline_speed void
2171clear_pending (EV_P_ W w) 3151clear_pending (EV_P_ W w)
2172{ 3152{
2173 if (w->pending) 3153 if (w->pending)
2174 { 3154 {
2175 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3155 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2176 w->pending = 0; 3156 w->pending = 0;
2177 } 3157 }
2178} 3158}
2179 3159
2180int 3160int
… …
2184 int pending = w_->pending; 3164 int pending = w_->pending;
2185 3165
2186 if (expect_true (pending)) 3166 if (expect_true (pending))
2187 { 3167 {
2188 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3168 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3169 p->w = (W)&pending_w;
2189 w_->pending = 0; 3170 w_->pending = 0;
2190 p->w = 0;
2191 return p->events; 3171 return p->events;
2192 } 3172 }
2193 else 3173 else
2194 return 0; 3174 return 0;
2195} 3175}
2196 3176
2197inline_size void 3177inline_size void
2198pri_adjust (EV_P_ W w) 3178pri_adjust (EV_P_ W w)
2199{ 3179{
2200 int pri = w->priority; 3180 int pri = ev_priority (w);
2201 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3181 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2202 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3182 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2203 w->priority = pri; 3183 ev_set_priority (w, pri);
2204} 3184}
2205 3185
2206inline_speed void 3186inline_speed void
2207ev_start (EV_P_ W w, int active) 3187ev_start (EV_P_ W w, int active)
2208{ 3188{
… …
2227 3207
2228 if (expect_false (ev_is_active (w))) 3208 if (expect_false (ev_is_active (w)))
2229 return; 3209 return;
2230 3210
2231 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3211 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2232 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3212 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2233 3213
2234 EV_FREQUENT_CHECK; 3214 EV_FREQUENT_CHECK;
2235 3215
2236 ev_start (EV_A_ (W)w, 1); 3216 ev_start (EV_A_ (W)w, 1);
2237 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3217 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2238 wlist_add (&anfds[fd].head, (WL)w); 3218 wlist_add (&anfds[fd].head, (WL)w);
2239 3219
2240 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3220 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2241 w->events &= ~EV__IOFDSET; 3221 w->events &= ~EV__IOFDSET;
2242 3222
2243 EV_FREQUENT_CHECK; 3223 EV_FREQUENT_CHECK;
2244} 3224}
2245 3225
… …
2255 EV_FREQUENT_CHECK; 3235 EV_FREQUENT_CHECK;
2256 3236
2257 wlist_del (&anfds[w->fd].head, (WL)w); 3237 wlist_del (&anfds[w->fd].head, (WL)w);
2258 ev_stop (EV_A_ (W)w); 3238 ev_stop (EV_A_ (W)w);
2259 3239
2260 fd_change (EV_A_ w->fd, 1); 3240 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2261 3241
2262 EV_FREQUENT_CHECK; 3242 EV_FREQUENT_CHECK;
2263} 3243}
2264 3244
2265void noinline 3245void noinline
… …
2307 timers [active] = timers [timercnt + HEAP0]; 3287 timers [active] = timers [timercnt + HEAP0];
2308 adjustheap (timers, timercnt, active); 3288 adjustheap (timers, timercnt, active);
2309 } 3289 }
2310 } 3290 }
2311 3291
2312 EV_FREQUENT_CHECK;
2313
2314 ev_at (w) -= mn_now; 3292 ev_at (w) -= mn_now;
2315 3293
2316 ev_stop (EV_A_ (W)w); 3294 ev_stop (EV_A_ (W)w);
3295
3296 EV_FREQUENT_CHECK;
2317} 3297}
2318 3298
2319void noinline 3299void noinline
2320ev_timer_again (EV_P_ ev_timer *w) 3300ev_timer_again (EV_P_ ev_timer *w)
2321{ 3301{
… …
2339 } 3319 }
2340 3320
2341 EV_FREQUENT_CHECK; 3321 EV_FREQUENT_CHECK;
2342} 3322}
2343 3323
3324ev_tstamp
3325ev_timer_remaining (EV_P_ ev_timer *w)
3326{
3327 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3328}
3329
2344#if EV_PERIODIC_ENABLE 3330#if EV_PERIODIC_ENABLE
2345void noinline 3331void noinline
2346ev_periodic_start (EV_P_ ev_periodic *w) 3332ev_periodic_start (EV_P_ ev_periodic *w)
2347{ 3333{
2348 if (expect_false (ev_is_active (w))) 3334 if (expect_false (ev_is_active (w)))
… …
2351 if (w->reschedule_cb) 3337 if (w->reschedule_cb)
2352 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3338 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2353 else if (w->interval) 3339 else if (w->interval)
2354 { 3340 {
2355 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3341 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2356 /* this formula differs from the one in periodic_reify because we do not always round up */ 3342 periodic_recalc (EV_A_ w);
2357 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2358 } 3343 }
2359 else 3344 else
2360 ev_at (w) = w->offset; 3345 ev_at (w) = w->offset;
2361 3346
2362 EV_FREQUENT_CHECK; 3347 EV_FREQUENT_CHECK;
… …
2394 periodics [active] = periodics [periodiccnt + HEAP0]; 3379 periodics [active] = periodics [periodiccnt + HEAP0];
2395 adjustheap (periodics, periodiccnt, active); 3380 adjustheap (periodics, periodiccnt, active);
2396 } 3381 }
2397 } 3382 }
2398 3383
2399 EV_FREQUENT_CHECK;
2400
2401 ev_stop (EV_A_ (W)w); 3384 ev_stop (EV_A_ (W)w);
3385
3386 EV_FREQUENT_CHECK;
2402} 3387}
2403 3388
2404void noinline 3389void noinline
2405ev_periodic_again (EV_P_ ev_periodic *w) 3390ev_periodic_again (EV_P_ ev_periodic *w)
2406{ 3391{
… …
2412 3397
2413#ifndef SA_RESTART 3398#ifndef SA_RESTART
2414# define SA_RESTART 0 3399# define SA_RESTART 0
2415#endif 3400#endif
2416 3401
3402#if EV_SIGNAL_ENABLE
3403
2417void noinline 3404void noinline
2418ev_signal_start (EV_P_ ev_signal *w) 3405ev_signal_start (EV_P_ ev_signal *w)
2419{ 3406{
2420#if EV_MULTIPLICITY
2421 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2422#endif
2423 if (expect_false (ev_is_active (w))) 3407 if (expect_false (ev_is_active (w)))
2424 return; 3408 return;
2425 3409
2426 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3410 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2427 3411
2428 evpipe_init (EV_A); 3412#if EV_MULTIPLICITY
3413 assert (("libev: a signal must not be attached to two different loops",
3414 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2429 3415
2430 EV_FREQUENT_CHECK; 3416 signals [w->signum - 1].loop = EV_A;
3417#endif
2431 3418
3419 EV_FREQUENT_CHECK;
3420
3421#if EV_USE_SIGNALFD
3422 if (sigfd == -2)
2432 { 3423 {
2433#ifndef _WIN32 3424 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2434 sigset_t full, prev; 3425 if (sigfd < 0 && errno == EINVAL)
2435 sigfillset (&full); 3426 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2436 sigprocmask (SIG_SETMASK, &full, &prev);
2437#endif
2438 3427
2439 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3428 if (sigfd >= 0)
3429 {
3430 fd_intern (sigfd); /* doing it twice will not hurt */
2440 3431
2441#ifndef _WIN32 3432 sigemptyset (&sigfd_set);
2442 sigprocmask (SIG_SETMASK, &prev, 0); 3433
2443#endif 3434 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3435 ev_set_priority (&sigfd_w, EV_MAXPRI);
3436 ev_io_start (EV_A_ &sigfd_w);
3437 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3438 }
2444 } 3439 }
3440
3441 if (sigfd >= 0)
3442 {
3443 /* TODO: check .head */
3444 sigaddset (&sigfd_set, w->signum);
3445 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3446
3447 signalfd (sigfd, &sigfd_set, 0);
3448 }
3449#endif
2445 3450
2446 ev_start (EV_A_ (W)w, 1); 3451 ev_start (EV_A_ (W)w, 1);
2447 wlist_add (&signals [w->signum - 1].head, (WL)w); 3452 wlist_add (&signals [w->signum - 1].head, (WL)w);
2448 3453
2449 if (!((WL)w)->next) 3454 if (!((WL)w)->next)
3455# if EV_USE_SIGNALFD
3456 if (sigfd < 0) /*TODO*/
3457# endif
2450 { 3458 {
2451#if _WIN32 3459# ifdef _WIN32
3460 evpipe_init (EV_A);
3461
2452 signal (w->signum, ev_sighandler); 3462 signal (w->signum, ev_sighandler);
2453#else 3463# else
2454 struct sigaction sa; 3464 struct sigaction sa;
3465
3466 evpipe_init (EV_A);
3467
2455 sa.sa_handler = ev_sighandler; 3468 sa.sa_handler = ev_sighandler;
2456 sigfillset (&sa.sa_mask); 3469 sigfillset (&sa.sa_mask);
2457 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3470 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2458 sigaction (w->signum, &sa, 0); 3471 sigaction (w->signum, &sa, 0);
3472
3473 if (origflags & EVFLAG_NOSIGMASK)
3474 {
3475 sigemptyset (&sa.sa_mask);
3476 sigaddset (&sa.sa_mask, w->signum);
3477 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3478 }
2459#endif 3479#endif
2460 } 3480 }
2461 3481
2462 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2463} 3483}
2464 3484
2465void noinline 3485void noinline
… …
2473 3493
2474 wlist_del (&signals [w->signum - 1].head, (WL)w); 3494 wlist_del (&signals [w->signum - 1].head, (WL)w);
2475 ev_stop (EV_A_ (W)w); 3495 ev_stop (EV_A_ (W)w);
2476 3496
2477 if (!signals [w->signum - 1].head) 3497 if (!signals [w->signum - 1].head)
3498 {
3499#if EV_MULTIPLICITY
3500 signals [w->signum - 1].loop = 0; /* unattach from signal */
3501#endif
3502#if EV_USE_SIGNALFD
3503 if (sigfd >= 0)
3504 {
3505 sigset_t ss;
3506
3507 sigemptyset (&ss);
3508 sigaddset (&ss, w->signum);
3509 sigdelset (&sigfd_set, w->signum);
3510
3511 signalfd (sigfd, &sigfd_set, 0);
3512 sigprocmask (SIG_UNBLOCK, &ss, 0);
3513 }
3514 else
3515#endif
2478 signal (w->signum, SIG_DFL); 3516 signal (w->signum, SIG_DFL);
3517 }
2479 3518
2480 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2481} 3520}
3521
3522#endif
3523
3524#if EV_CHILD_ENABLE
2482 3525
2483void 3526void
2484ev_child_start (EV_P_ ev_child *w) 3527ev_child_start (EV_P_ ev_child *w)
2485{ 3528{
2486#if EV_MULTIPLICITY 3529#if EV_MULTIPLICITY
… …
2490 return; 3533 return;
2491 3534
2492 EV_FREQUENT_CHECK; 3535 EV_FREQUENT_CHECK;
2493 3536
2494 ev_start (EV_A_ (W)w, 1); 3537 ev_start (EV_A_ (W)w, 1);
2495 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3538 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2496 3539
2497 EV_FREQUENT_CHECK; 3540 EV_FREQUENT_CHECK;
2498} 3541}
2499 3542
2500void 3543void
… …
2504 if (expect_false (!ev_is_active (w))) 3547 if (expect_false (!ev_is_active (w)))
2505 return; 3548 return;
2506 3549
2507 EV_FREQUENT_CHECK; 3550 EV_FREQUENT_CHECK;
2508 3551
2509 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3552 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2510 ev_stop (EV_A_ (W)w); 3553 ev_stop (EV_A_ (W)w);
2511 3554
2512 EV_FREQUENT_CHECK; 3555 EV_FREQUENT_CHECK;
2513} 3556}
3557
3558#endif
2514 3559
2515#if EV_STAT_ENABLE 3560#if EV_STAT_ENABLE
2516 3561
2517# ifdef _WIN32 3562# ifdef _WIN32
2518# undef lstat 3563# undef lstat
… …
2524#define MIN_STAT_INTERVAL 0.1074891 3569#define MIN_STAT_INTERVAL 0.1074891
2525 3570
2526static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2527 3572
2528#if EV_USE_INOTIFY 3573#if EV_USE_INOTIFY
2529# define EV_INOTIFY_BUFSIZE 8192 3574
3575/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3576# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2530 3577
2531static void noinline 3578static void noinline
2532infy_add (EV_P_ ev_stat *w) 3579infy_add (EV_P_ ev_stat *w)
2533{ 3580{
2534 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3581 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2535 3582
2536 if (w->wd < 0) 3583 if (w->wd >= 0)
3584 {
3585 struct statfs sfs;
3586
3587 /* now local changes will be tracked by inotify, but remote changes won't */
3588 /* unless the filesystem is known to be local, we therefore still poll */
3589 /* also do poll on <2.6.25, but with normal frequency */
3590
3591 if (!fs_2625)
3592 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3593 else if (!statfs (w->path, &sfs)
3594 && (sfs.f_type == 0x1373 /* devfs */
3595 || sfs.f_type == 0xEF53 /* ext2/3 */
3596 || sfs.f_type == 0x3153464a /* jfs */
3597 || sfs.f_type == 0x52654973 /* reiser3 */
3598 || sfs.f_type == 0x01021994 /* tempfs */
3599 || sfs.f_type == 0x58465342 /* xfs */))
3600 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3601 else
3602 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2537 { 3603 }
3604 else
3605 {
3606 /* can't use inotify, continue to stat */
2538 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3607 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2539 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2540 3608
2541 /* monitor some parent directory for speedup hints */ 3609 /* if path is not there, monitor some parent directory for speedup hints */
2542 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3610 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2543 /* but an efficiency issue only */ 3611 /* but an efficiency issue only */
2544 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3612 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2545 { 3613 {
2546 char path [4096]; 3614 char path [4096];
… …
2556 if (!pend || pend == path) 3624 if (!pend || pend == path)
2557 break; 3625 break;
2558 3626
2559 *pend = 0; 3627 *pend = 0;
2560 w->wd = inotify_add_watch (fs_fd, path, mask); 3628 w->wd = inotify_add_watch (fs_fd, path, mask);
2561 } 3629 }
2562 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3630 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2563 } 3631 }
2564 } 3632 }
2565 3633
2566 if (w->wd >= 0) 3634 if (w->wd >= 0)
2567 {
2568 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3635 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2569 3636
2570 /* now local changes will be tracked by inotify, but remote changes won't */ 3637 /* now re-arm timer, if required */
2571 /* unless the filesystem it known to be local, we therefore still poll */ 3638 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2572 /* also do poll on <2.6.25, but with normal frequency */
2573 struct statfs sfs;
2574
2575 if (fs_2625 && !statfs (w->path, &sfs))
2576 if (sfs.f_type == 0x1373 /* devfs */
2577 || sfs.f_type == 0xEF53 /* ext2/3 */
2578 || sfs.f_type == 0x3153464a /* jfs */
2579 || sfs.f_type == 0x52654973 /* reiser3 */
2580 || sfs.f_type == 0x01021994 /* tempfs */
2581 || sfs.f_type == 0x58465342 /* xfs */)
2582 return;
2583
2584 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2585 ev_timer_again (EV_A_ &w->timer); 3639 ev_timer_again (EV_A_ &w->timer);
2586 } 3640 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2587} 3641}
2588 3642
2589static void noinline 3643static void noinline
2590infy_del (EV_P_ ev_stat *w) 3644infy_del (EV_P_ ev_stat *w)
2591{ 3645{
… …
2594 3648
2595 if (wd < 0) 3649 if (wd < 0)
2596 return; 3650 return;
2597 3651
2598 w->wd = -2; 3652 w->wd = -2;
2599 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3653 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2600 wlist_del (&fs_hash [slot].head, (WL)w); 3654 wlist_del (&fs_hash [slot].head, (WL)w);
2601 3655
2602 /* remove this watcher, if others are watching it, they will rearm */ 3656 /* remove this watcher, if others are watching it, they will rearm */
2603 inotify_rm_watch (fs_fd, wd); 3657 inotify_rm_watch (fs_fd, wd);
2604} 3658}
… …
2606static void noinline 3660static void noinline
2607infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3661infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2608{ 3662{
2609 if (slot < 0) 3663 if (slot < 0)
2610 /* overflow, need to check for all hash slots */ 3664 /* overflow, need to check for all hash slots */
2611 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3665 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2612 infy_wd (EV_A_ slot, wd, ev); 3666 infy_wd (EV_A_ slot, wd, ev);
2613 else 3667 else
2614 { 3668 {
2615 WL w_; 3669 WL w_;
2616 3670
2617 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3671 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2618 { 3672 {
2619 ev_stat *w = (ev_stat *)w_; 3673 ev_stat *w = (ev_stat *)w_;
2620 w_ = w_->next; /* lets us remove this watcher and all before it */ 3674 w_ = w_->next; /* lets us remove this watcher and all before it */
2621 3675
2622 if (w->wd == wd || wd == -1) 3676 if (w->wd == wd || wd == -1)
2623 { 3677 {
2624 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3678 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2625 { 3679 {
2626 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3680 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2627 w->wd = -1; 3681 w->wd = -1;
2628 infy_add (EV_A_ w); /* re-add, no matter what */ 3682 infy_add (EV_A_ w); /* re-add, no matter what */
2629 } 3683 }
2630 3684
2631 stat_timer_cb (EV_A_ &w->timer, 0); 3685 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2636 3690
2637static void 3691static void
2638infy_cb (EV_P_ ev_io *w, int revents) 3692infy_cb (EV_P_ ev_io *w, int revents)
2639{ 3693{
2640 char buf [EV_INOTIFY_BUFSIZE]; 3694 char buf [EV_INOTIFY_BUFSIZE];
2641 struct inotify_event *ev = (struct inotify_event *)buf;
2642 int ofs; 3695 int ofs;
2643 int len = read (fs_fd, buf, sizeof (buf)); 3696 int len = read (fs_fd, buf, sizeof (buf));
2644 3697
2645 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3698 for (ofs = 0; ofs < len; )
3699 {
3700 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2646 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3701 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3702 ofs += sizeof (struct inotify_event) + ev->len;
3703 }
2647} 3704}
2648 3705
2649inline_size void 3706inline_size void ecb_cold
2650check_2625 (EV_P) 3707ev_check_2625 (EV_P)
2651{ 3708{
2652 /* kernels < 2.6.25 are borked 3709 /* kernels < 2.6.25 are borked
2653 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3710 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2654 */ 3711 */
2655 struct utsname buf; 3712 if (ev_linux_version () < 0x020619)
2656 int major, minor, micro;
2657
2658 if (uname (&buf))
2659 return; 3713 return;
2660 3714
2661 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2662 return;
2663
2664 if (major < 2
2665 || (major == 2 && minor < 6)
2666 || (major == 2 && minor == 6 && micro < 25))
2667 return;
2668
2669 fs_2625 = 1; 3715 fs_2625 = 1;
3716}
3717
3718inline_size int
3719infy_newfd (void)
3720{
3721#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3722 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3723 if (fd >= 0)
3724 return fd;
3725#endif
3726 return inotify_init ();
2670} 3727}
2671 3728
2672inline_size void 3729inline_size void
2673infy_init (EV_P) 3730infy_init (EV_P)
2674{ 3731{
2675 if (fs_fd != -2) 3732 if (fs_fd != -2)
2676 return; 3733 return;
2677 3734
2678 fs_fd = -1; 3735 fs_fd = -1;
2679 3736
2680 check_2625 (EV_A); 3737 ev_check_2625 (EV_A);
2681 3738
2682 fs_fd = inotify_init (); 3739 fs_fd = infy_newfd ();
2683 3740
2684 if (fs_fd >= 0) 3741 if (fs_fd >= 0)
2685 { 3742 {
3743 fd_intern (fs_fd);
2686 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3744 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2687 ev_set_priority (&fs_w, EV_MAXPRI); 3745 ev_set_priority (&fs_w, EV_MAXPRI);
2688 ev_io_start (EV_A_ &fs_w); 3746 ev_io_start (EV_A_ &fs_w);
3747 ev_unref (EV_A);
2689 } 3748 }
2690} 3749}
2691 3750
2692inline_size void 3751inline_size void
2693infy_fork (EV_P) 3752infy_fork (EV_P)
… …
2695 int slot; 3754 int slot;
2696 3755
2697 if (fs_fd < 0) 3756 if (fs_fd < 0)
2698 return; 3757 return;
2699 3758
3759 ev_ref (EV_A);
3760 ev_io_stop (EV_A_ &fs_w);
2700 close (fs_fd); 3761 close (fs_fd);
2701 fs_fd = inotify_init (); 3762 fs_fd = infy_newfd ();
2702 3763
3764 if (fs_fd >= 0)
3765 {
3766 fd_intern (fs_fd);
3767 ev_io_set (&fs_w, fs_fd, EV_READ);
3768 ev_io_start (EV_A_ &fs_w);
3769 ev_unref (EV_A);
3770 }
3771
2703 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3772 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2704 { 3773 {
2705 WL w_ = fs_hash [slot].head; 3774 WL w_ = fs_hash [slot].head;
2706 fs_hash [slot].head = 0; 3775 fs_hash [slot].head = 0;
2707 3776
2708 while (w_) 3777 while (w_)
… …
2713 w->wd = -1; 3782 w->wd = -1;
2714 3783
2715 if (fs_fd >= 0) 3784 if (fs_fd >= 0)
2716 infy_add (EV_A_ w); /* re-add, no matter what */ 3785 infy_add (EV_A_ w); /* re-add, no matter what */
2717 else 3786 else
3787 {
3788 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3789 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2718 ev_timer_again (EV_A_ &w->timer); 3790 ev_timer_again (EV_A_ &w->timer);
3791 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3792 }
2719 } 3793 }
2720 } 3794 }
2721} 3795}
2722 3796
2723#endif 3797#endif
… …
2740static void noinline 3814static void noinline
2741stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3815stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2742{ 3816{
2743 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3817 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2744 3818
2745 /* we copy this here each the time so that */ 3819 ev_statdata prev = w->attr;
2746 /* prev has the old value when the callback gets invoked */
2747 w->prev = w->attr;
2748 ev_stat_stat (EV_A_ w); 3820 ev_stat_stat (EV_A_ w);
2749 3821
2750 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3822 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2751 if ( 3823 if (
2752 w->prev.st_dev != w->attr.st_dev 3824 prev.st_dev != w->attr.st_dev
2753 || w->prev.st_ino != w->attr.st_ino 3825 || prev.st_ino != w->attr.st_ino
2754 || w->prev.st_mode != w->attr.st_mode 3826 || prev.st_mode != w->attr.st_mode
2755 || w->prev.st_nlink != w->attr.st_nlink 3827 || prev.st_nlink != w->attr.st_nlink
2756 || w->prev.st_uid != w->attr.st_uid 3828 || prev.st_uid != w->attr.st_uid
2757 || w->prev.st_gid != w->attr.st_gid 3829 || prev.st_gid != w->attr.st_gid
2758 || w->prev.st_rdev != w->attr.st_rdev 3830 || prev.st_rdev != w->attr.st_rdev
2759 || w->prev.st_size != w->attr.st_size 3831 || prev.st_size != w->attr.st_size
2760 || w->prev.st_atime != w->attr.st_atime 3832 || prev.st_atime != w->attr.st_atime
2761 || w->prev.st_mtime != w->attr.st_mtime 3833 || prev.st_mtime != w->attr.st_mtime
2762 || w->prev.st_ctime != w->attr.st_ctime 3834 || prev.st_ctime != w->attr.st_ctime
2763 ) { 3835 ) {
3836 /* we only update w->prev on actual differences */
3837 /* in case we test more often than invoke the callback, */
3838 /* to ensure that prev is always different to attr */
3839 w->prev = prev;
3840
2764 #if EV_USE_INOTIFY 3841 #if EV_USE_INOTIFY
2765 if (fs_fd >= 0) 3842 if (fs_fd >= 0)
2766 { 3843 {
2767 infy_del (EV_A_ w); 3844 infy_del (EV_A_ w);
2768 infy_add (EV_A_ w); 3845 infy_add (EV_A_ w);
… …
2793 3870
2794 if (fs_fd >= 0) 3871 if (fs_fd >= 0)
2795 infy_add (EV_A_ w); 3872 infy_add (EV_A_ w);
2796 else 3873 else
2797#endif 3874#endif
3875 {
2798 ev_timer_again (EV_A_ &w->timer); 3876 ev_timer_again (EV_A_ &w->timer);
3877 ev_unref (EV_A);
3878 }
2799 3879
2800 ev_start (EV_A_ (W)w, 1); 3880 ev_start (EV_A_ (W)w, 1);
2801 3881
2802 EV_FREQUENT_CHECK; 3882 EV_FREQUENT_CHECK;
2803} 3883}
… …
2812 EV_FREQUENT_CHECK; 3892 EV_FREQUENT_CHECK;
2813 3893
2814#if EV_USE_INOTIFY 3894#if EV_USE_INOTIFY
2815 infy_del (EV_A_ w); 3895 infy_del (EV_A_ w);
2816#endif 3896#endif
3897
3898 if (ev_is_active (&w->timer))
3899 {
3900 ev_ref (EV_A);
2817 ev_timer_stop (EV_A_ &w->timer); 3901 ev_timer_stop (EV_A_ &w->timer);
3902 }
2818 3903
2819 ev_stop (EV_A_ (W)w); 3904 ev_stop (EV_A_ (W)w);
2820 3905
2821 EV_FREQUENT_CHECK; 3906 EV_FREQUENT_CHECK;
2822} 3907}
… …
2867 3952
2868 EV_FREQUENT_CHECK; 3953 EV_FREQUENT_CHECK;
2869} 3954}
2870#endif 3955#endif
2871 3956
3957#if EV_PREPARE_ENABLE
2872void 3958void
2873ev_prepare_start (EV_P_ ev_prepare *w) 3959ev_prepare_start (EV_P_ ev_prepare *w)
2874{ 3960{
2875 if (expect_false (ev_is_active (w))) 3961 if (expect_false (ev_is_active (w)))
2876 return; 3962 return;
… …
2902 3988
2903 ev_stop (EV_A_ (W)w); 3989 ev_stop (EV_A_ (W)w);
2904 3990
2905 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
2906} 3992}
3993#endif
2907 3994
3995#if EV_CHECK_ENABLE
2908void 3996void
2909ev_check_start (EV_P_ ev_check *w) 3997ev_check_start (EV_P_ ev_check *w)
2910{ 3998{
2911 if (expect_false (ev_is_active (w))) 3999 if (expect_false (ev_is_active (w)))
2912 return; 4000 return;
… …
2938 4026
2939 ev_stop (EV_A_ (W)w); 4027 ev_stop (EV_A_ (W)w);
2940 4028
2941 EV_FREQUENT_CHECK; 4029 EV_FREQUENT_CHECK;
2942} 4030}
4031#endif
2943 4032
2944#if EV_EMBED_ENABLE 4033#if EV_EMBED_ENABLE
2945void noinline 4034void noinline
2946ev_embed_sweep (EV_P_ ev_embed *w) 4035ev_embed_sweep (EV_P_ ev_embed *w)
2947{ 4036{
2948 ev_loop (w->other, EVLOOP_NONBLOCK); 4037 ev_run (w->other, EVRUN_NOWAIT);
2949} 4038}
2950 4039
2951static void 4040static void
2952embed_io_cb (EV_P_ ev_io *io, int revents) 4041embed_io_cb (EV_P_ ev_io *io, int revents)
2953{ 4042{
2954 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4043 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2955 4044
2956 if (ev_cb (w)) 4045 if (ev_cb (w))
2957 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4046 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2958 else 4047 else
2959 ev_loop (w->other, EVLOOP_NONBLOCK); 4048 ev_run (w->other, EVRUN_NOWAIT);
2960} 4049}
2961 4050
2962static void 4051static void
2963embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4052embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2964{ 4053{
2965 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4054 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2966 4055
2967 { 4056 {
2968 struct ev_loop *loop = w->other; 4057 EV_P = w->other;
2969 4058
2970 while (fdchangecnt) 4059 while (fdchangecnt)
2971 { 4060 {
2972 fd_reify (EV_A); 4061 fd_reify (EV_A);
2973 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4062 ev_run (EV_A_ EVRUN_NOWAIT);
2974 } 4063 }
2975 } 4064 }
2976} 4065}
2977 4066
2978static void 4067static void
… …
2981 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4070 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2982 4071
2983 ev_embed_stop (EV_A_ w); 4072 ev_embed_stop (EV_A_ w);
2984 4073
2985 { 4074 {
2986 struct ev_loop *loop = w->other; 4075 EV_P = w->other;
2987 4076
2988 ev_loop_fork (EV_A); 4077 ev_loop_fork (EV_A);
2989 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4078 ev_run (EV_A_ EVRUN_NOWAIT);
2990 } 4079 }
2991 4080
2992 ev_embed_start (EV_A_ w); 4081 ev_embed_start (EV_A_ w);
2993} 4082}
2994 4083
… …
3005{ 4094{
3006 if (expect_false (ev_is_active (w))) 4095 if (expect_false (ev_is_active (w)))
3007 return; 4096 return;
3008 4097
3009 { 4098 {
3010 struct ev_loop *loop = w->other; 4099 EV_P = w->other;
3011 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4100 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3012 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4101 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3013 } 4102 }
3014 4103
3015 EV_FREQUENT_CHECK; 4104 EV_FREQUENT_CHECK;
… …
3042 4131
3043 ev_io_stop (EV_A_ &w->io); 4132 ev_io_stop (EV_A_ &w->io);
3044 ev_prepare_stop (EV_A_ &w->prepare); 4133 ev_prepare_stop (EV_A_ &w->prepare);
3045 ev_fork_stop (EV_A_ &w->fork); 4134 ev_fork_stop (EV_A_ &w->fork);
3046 4135
4136 ev_stop (EV_A_ (W)w);
4137
3047 EV_FREQUENT_CHECK; 4138 EV_FREQUENT_CHECK;
3048} 4139}
3049#endif 4140#endif
3050 4141
3051#if EV_FORK_ENABLE 4142#if EV_FORK_ENABLE
… …
3084 4175
3085 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
3086} 4177}
3087#endif 4178#endif
3088 4179
4180#if EV_CLEANUP_ENABLE
4181void
4182ev_cleanup_start (EV_P_ ev_cleanup *w)
4183{
4184 if (expect_false (ev_is_active (w)))
4185 return;
4186
4187 EV_FREQUENT_CHECK;
4188
4189 ev_start (EV_A_ (W)w, ++cleanupcnt);
4190 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4191 cleanups [cleanupcnt - 1] = w;
4192
4193 /* cleanup watchers should never keep a refcount on the loop */
4194 ev_unref (EV_A);
4195 EV_FREQUENT_CHECK;
4196}
4197
4198void
4199ev_cleanup_stop (EV_P_ ev_cleanup *w)
4200{
4201 clear_pending (EV_A_ (W)w);
4202 if (expect_false (!ev_is_active (w)))
4203 return;
4204
4205 EV_FREQUENT_CHECK;
4206 ev_ref (EV_A);
4207
4208 {
4209 int active = ev_active (w);
4210
4211 cleanups [active - 1] = cleanups [--cleanupcnt];
4212 ev_active (cleanups [active - 1]) = active;
4213 }
4214
4215 ev_stop (EV_A_ (W)w);
4216
4217 EV_FREQUENT_CHECK;
4218}
4219#endif
4220
3089#if EV_ASYNC_ENABLE 4221#if EV_ASYNC_ENABLE
3090void 4222void
3091ev_async_start (EV_P_ ev_async *w) 4223ev_async_start (EV_P_ ev_async *w)
3092{ 4224{
3093 if (expect_false (ev_is_active (w))) 4225 if (expect_false (ev_is_active (w)))
3094 return; 4226 return;
3095 4227
4228 w->sent = 0;
4229
3096 evpipe_init (EV_A); 4230 evpipe_init (EV_A);
3097 4231
3098 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3099 4233
3100 ev_start (EV_A_ (W)w, ++asynccnt); 4234 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3127 4261
3128void 4262void
3129ev_async_send (EV_P_ ev_async *w) 4263ev_async_send (EV_P_ ev_async *w)
3130{ 4264{
3131 w->sent = 1; 4265 w->sent = 1;
3132 evpipe_write (EV_A_ &gotasync); 4266 evpipe_write (EV_A_ &async_pending);
3133} 4267}
3134#endif 4268#endif
3135 4269
3136/*****************************************************************************/ 4270/*****************************************************************************/
3137 4271
… …
3177{ 4311{
3178 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4312 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3179 4313
3180 if (expect_false (!once)) 4314 if (expect_false (!once))
3181 { 4315 {
3182 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4316 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3183 return; 4317 return;
3184 } 4318 }
3185 4319
3186 once->cb = cb; 4320 once->cb = cb;
3187 once->arg = arg; 4321 once->arg = arg;
… …
3201 } 4335 }
3202} 4336}
3203 4337
3204/*****************************************************************************/ 4338/*****************************************************************************/
3205 4339
3206#if 0 4340#if EV_WALK_ENABLE
3207void 4341void ecb_cold
3208ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4342ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3209{ 4343{
3210 int i, j; 4344 int i, j;
3211 ev_watcher_list *wl, *wn; 4345 ev_watcher_list *wl, *wn;
3212 4346
… …
3227#if EV_USE_INOTIFY 4361#if EV_USE_INOTIFY
3228 if (ev_cb ((ev_io *)wl) == infy_cb) 4362 if (ev_cb ((ev_io *)wl) == infy_cb)
3229 ; 4363 ;
3230 else 4364 else
3231#endif 4365#endif
3232 if ((ev_io *)wl != &pipeev) 4366 if ((ev_io *)wl != &pipe_w)
3233 if (types & EV_IO) 4367 if (types & EV_IO)
3234 cb (EV_A_ EV_IO, wl); 4368 cb (EV_A_ EV_IO, wl);
3235 4369
3236 wl = wn; 4370 wl = wn;
3237 } 4371 }
… …
3256 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4390 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3257#endif 4391#endif
3258 4392
3259#if EV_IDLE_ENABLE 4393#if EV_IDLE_ENABLE
3260 if (types & EV_IDLE) 4394 if (types & EV_IDLE)
3261 for (j = NUMPRI; i--; ) 4395 for (j = NUMPRI; j--; )
3262 for (i = idlecnt [j]; i--; ) 4396 for (i = idlecnt [j]; i--; )
3263 cb (EV_A_ EV_IDLE, idles [j][i]); 4397 cb (EV_A_ EV_IDLE, idles [j][i]);
3264#endif 4398#endif
3265 4399
3266#if EV_FORK_ENABLE 4400#if EV_FORK_ENABLE
… …
3274 if (types & EV_ASYNC) 4408 if (types & EV_ASYNC)
3275 for (i = asynccnt; i--; ) 4409 for (i = asynccnt; i--; )
3276 cb (EV_A_ EV_ASYNC, asyncs [i]); 4410 cb (EV_A_ EV_ASYNC, asyncs [i]);
3277#endif 4411#endif
3278 4412
4413#if EV_PREPARE_ENABLE
3279 if (types & EV_PREPARE) 4414 if (types & EV_PREPARE)
3280 for (i = preparecnt; i--; ) 4415 for (i = preparecnt; i--; )
3281#if EV_EMBED_ENABLE 4416# if EV_EMBED_ENABLE
3282 if (ev_cb (prepares [i]) != embed_prepare_cb) 4417 if (ev_cb (prepares [i]) != embed_prepare_cb)
3283#endif 4418# endif
3284 cb (EV_A_ EV_PREPARE, prepares [i]); 4419 cb (EV_A_ EV_PREPARE, prepares [i]);
4420#endif
3285 4421
4422#if EV_CHECK_ENABLE
3286 if (types & EV_CHECK) 4423 if (types & EV_CHECK)
3287 for (i = checkcnt; i--; ) 4424 for (i = checkcnt; i--; )
3288 cb (EV_A_ EV_CHECK, checks [i]); 4425 cb (EV_A_ EV_CHECK, checks [i]);
4426#endif
3289 4427
4428#if EV_SIGNAL_ENABLE
3290 if (types & EV_SIGNAL) 4429 if (types & EV_SIGNAL)
3291 for (i = 0; i < signalmax; ++i) 4430 for (i = 0; i < EV_NSIG - 1; ++i)
3292 for (wl = signals [i].head; wl; ) 4431 for (wl = signals [i].head; wl; )
3293 { 4432 {
3294 wn = wl->next; 4433 wn = wl->next;
3295 cb (EV_A_ EV_SIGNAL, wl); 4434 cb (EV_A_ EV_SIGNAL, wl);
3296 wl = wn; 4435 wl = wn;
3297 } 4436 }
4437#endif
3298 4438
4439#if EV_CHILD_ENABLE
3299 if (types & EV_CHILD) 4440 if (types & EV_CHILD)
3300 for (i = EV_PID_HASHSIZE; i--; ) 4441 for (i = (EV_PID_HASHSIZE); i--; )
3301 for (wl = childs [i]; wl; ) 4442 for (wl = childs [i]; wl; )
3302 { 4443 {
3303 wn = wl->next; 4444 wn = wl->next;
3304 cb (EV_A_ EV_CHILD, wl); 4445 cb (EV_A_ EV_CHILD, wl);
3305 wl = wn; 4446 wl = wn;
3306 } 4447 }
4448#endif
3307/* EV_STAT 0x00001000 /* stat data changed */ 4449/* EV_STAT 0x00001000 /* stat data changed */
3308/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4450/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3309} 4451}
3310#endif 4452#endif
3311 4453
3312#if EV_MULTIPLICITY 4454#if EV_MULTIPLICITY
3313 #include "ev_wrap.h" 4455 #include "ev_wrap.h"
3314#endif 4456#endif
3315 4457
3316#ifdef __cplusplus
3317}
3318#endif
3319

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