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Comparing libev/ev.c (file contents):
Revision 1.286 by root, Wed Apr 15 19:37:15 2009 UTC vs.
Revision 1.422 by root, Wed Apr 18 06:09:29 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) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
123# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
126# endif 136# endif
127 137
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
134# endif 145# endif
135 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
142# endif 163# endif
143 164
144#endif 165#endif
145 166
146#include <math.h>
147#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
148#include <fcntl.h> 169#include <fcntl.h>
149#include <stddef.h> 170#include <stddef.h>
150 171
151#include <stdio.h> 172#include <stdio.h>
152 173
153#include <assert.h> 174#include <assert.h>
154#include <errno.h> 175#include <errno.h>
155#include <sys/types.h> 176#include <sys/types.h>
156#include <time.h> 177#include <time.h>
178#include <limits.h>
157 179
158#include <signal.h> 180#include <signal.h>
159 181
160#ifdef EV_H 182#ifdef EV_H
161# include EV_H 183# include EV_H
162#else 184#else
163# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
164#endif 197#endif
165 198
166#ifndef _WIN32 199#ifndef _WIN32
167# include <sys/time.h> 200# include <sys/time.h>
168# include <sys/wait.h> 201# include <sys/wait.h>
… …
172# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 206# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
176# endif 209# endif
210# undef EV_AVOID_STDIO
177#endif 211#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
178 220
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
222
223/* try to deduce the maximum number of signals on this platform */
224#if defined EV_NSIG
225/* use what's provided */
226#elif defined NSIG
227# define EV_NSIG (NSIG)
228#elif defined _NSIG
229# define EV_NSIG (_NSIG)
230#elif defined SIGMAX
231# define EV_NSIG (SIGMAX+1)
232#elif defined SIG_MAX
233# define EV_NSIG (SIG_MAX+1)
234#elif defined _SIG_MAX
235# define EV_NSIG (_SIG_MAX+1)
236#elif defined MAXSIG
237# define EV_NSIG (MAXSIG+1)
238#elif defined MAX_SIG
239# define EV_NSIG (MAX_SIG+1)
240#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else
245# error "unable to find value for NSIG, please report"
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
180 254
181#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 258# else
185# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
186# endif 260# endif
187#endif 261#endif
188 262
189#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 266# else
193# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
194# endif 268# endif
195#endif 269#endif
196 270
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 273#endif
200 274
201#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 278# else
205# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
206# endif 280# endif
207#endif 281#endif
208 282
209#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 285#endif
212 286
213#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
214# ifdef _WIN32 288# ifdef _WIN32
215# define EV_USE_POLL 0 289# define EV_USE_POLL 0
216# else 290# else
217# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 292# endif
219#endif 293#endif
220 294
221#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 298# else
225# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
226# endif 300# endif
227#endif 301#endif
228 302
… …
234# define EV_USE_PORT 0 308# define EV_USE_PORT 0
235#endif 309#endif
236 310
237#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 314# else
241# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
242# endif 316# endif
243#endif 317#endif
244 318
245#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 321#endif
252 322
253#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 325#endif
260 326
261#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 330# else
265# define EV_USE_EVENTFD 0 331# define EV_USE_EVENTFD 0
332# endif
333#endif
334
335#ifndef EV_USE_SIGNALFD
336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
337# define EV_USE_SIGNALFD EV_FEATURE_OS
338# else
339# define EV_USE_SIGNALFD 0
266# endif 340# endif
267#endif 341#endif
268 342
269#if 0 /* debugging */ 343#if 0 /* debugging */
270# define EV_VERIFY 3 344# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
273#endif 347#endif
274 348
275#ifndef EV_VERIFY 349#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 351#endif
278 352
279#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 355#endif
282 356
283#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif
360
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h>
365# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1
369# else
370# undef EV_USE_CLOCK_SYSCALL
371# define EV_USE_CLOCK_SYSCALL 0
372# endif
285#endif 373#endif
286 374
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 375/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
288 382
289#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
292#endif 386#endif
… …
300# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
302#endif 396#endif
303 397
304#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
306# include <sys/select.h> 401# include <sys/select.h>
307# endif 402# endif
308#endif 403#endif
309 404
310#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 406# include <sys/statfs.h>
313# include <sys/inotify.h> 407# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
320 414
321#if EV_SELECT_IS_WINSOCKET 415#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 416# include <winsock.h>
323#endif 417#endif
324 418
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 419#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 421# include <stdint.h>
337# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
338extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
339# endif 424# endif
340int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 426# ifdef O_CLOEXEC
342} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
343# endif 431# endif
432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
433#endif
434
435#if EV_USE_SIGNALFD
436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
437# include <stdint.h>
438# ifndef SFD_NONBLOCK
439# define SFD_NONBLOCK O_NONBLOCK
440# endif
441# ifndef SFD_CLOEXEC
442# ifdef O_CLOEXEC
443# define SFD_CLOEXEC O_CLOEXEC
444# else
445# define SFD_CLOEXEC 02000000
446# endif
447# endif
448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
449
450struct signalfd_siginfo
451{
452 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)];
454};
344#endif 455#endif
345 456
346/**/ 457/**/
347 458
348#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 461#else
351# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
352#endif 463#endif
353 464
354/* 465/*
355 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 468 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 471
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 519 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
371#else 526#else
372# define expect(expr,value) (expr) 527 #include <inttypes.h>
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
377#endif 542 #endif
543#endif
378 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
586 #endif
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
600 #elif defined _WIN32
601 #include <WinNT.h>
602 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
603 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
604 #include <mbarrier.h>
605 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
606 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
607 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
608 #elif __xlC__
609 #define ECB_MEMORY_FENCE __sync ()
610 #endif
611#endif
612
613#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS
615 /*
616 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler
619 * OR provide pthread.h and link against the posix thread library
620 * of your system.
621 */
622 #include <pthread.h>
623 #define ECB_NEEDS_PTHREADS 1
624 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
625
626 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
627 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
628 #endif
629#endif
630
631#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
633#endif
634
635#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif
638
639/*****************************************************************************/
640
641#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643#if __cplusplus
644 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__
647#elif ECB_C99
648 #define ecb_inline static inline
649#else
650 #define ecb_inline static
651#endif
652
653#if ECB_GCC_VERSION(3,3)
654 #define ecb_restrict __restrict__
655#elif ECB_C99
656 #define ecb_restrict restrict
657#else
658 #define ecb_restrict
659#endif
660
661typedef int ecb_bool;
662
663#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
667
668#define ecb_function_ ecb_inline
669
670#if ECB_GCC_VERSION(3,1)
671 #define ecb_attribute(attrlist) __attribute__(attrlist)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality)
680#endif
681
682/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5)
684 #define ecb_decltype(x) __decltype(x)
685#elif ECB_GCC_VERSION(3,0)
686 #define ecb_decltype(x) __typeof(x)
687#endif
688
689#define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__))
691#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__))
694
695#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__))
699#else
700 #define ecb_artificial
701 #define ecb_hot
702 #define ecb_cold
703#endif
704
705/* put around conditional expressions if you are very sure that the */
706/* expression is mostly true or mostly false. note that these return */
707/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 709#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
710/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr)
713
714/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4)
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */
723#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
725 ecb_function_ int
726 ecb_ctz32 (uint32_t x)
727 {
728 int r = 0;
729
730 x &= ~x + 1; /* this isolates the lowest bit */
731
732#if ECB_branchless_on_i386
733 r += !!(x & 0xaaaaaaaa) << 0;
734 r += !!(x & 0xcccccccc) << 1;
735 r += !!(x & 0xf0f0f0f0) << 2;
736 r += !!(x & 0xff00ff00) << 3;
737 r += !!(x & 0xffff0000) << 4;
738#else
739 if (x & 0xaaaaaaaa) r += 1;
740 if (x & 0xcccccccc) r += 2;
741 if (x & 0xf0f0f0f0) r += 4;
742 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16;
744#endif
745
746 return r;
747 }
748
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
750 ecb_function_ int
751 ecb_ctz64 (uint64_t x)
752 {
753 int shift = x & 0xffffffffU ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift;
755 }
756
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
758 ecb_function_ int
759 ecb_popcount32 (uint32_t x)
760 {
761 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101;
765
766 return x >> 24;
767 }
768
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
770 ecb_function_ int ecb_ld32 (uint32_t x)
771 {
772 int r = 0;
773
774 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; }
779
780 return r;
781 }
782
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
784 ecb_function_ int ecb_ld64 (uint64_t x)
785 {
786 int r = 0;
787
788 if (x >> 32) { x >>= 32; r += 32; }
789
790 return r + ecb_ld32 (x);
791 }
792#endif
793
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796{
797 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799}
800
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
803{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8);
808
809 return x;
810}
811
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
814{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
819 x = ( x >> 16 ) | ( x << 16);
820
821 return x;
822}
823
824/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
827ecb_function_ int
828ecb_popcount64 (uint64_t x)
829{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831}
832
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
841
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850
851#if ECB_GCC_VERSION(4,3)
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
853 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x)
855#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
857 ecb_function_ uint16_t
858 ecb_bswap16 (uint16_t x)
859 {
860 return ecb_rotl16 (x, 8);
861 }
862
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
864 ecb_function_ uint32_t
865 ecb_bswap32 (uint32_t x)
866 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 }
869
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
871 ecb_function_ uint64_t
872 ecb_bswap64 (uint64_t x)
873 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 }
876#endif
877
878#if ECB_GCC_VERSION(4,5)
879 #define ecb_unreachable() __builtin_unreachable ()
880#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn;
883 ecb_inline void ecb_unreachable (void) { }
884#endif
885
886/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
888
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890ecb_inline unsigned char
891ecb_byteorder_helper (void)
892{
893 const uint32_t u = 0x11223344;
894 return *(unsigned char *)&u;
895}
896
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
901
902#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif
907
908#if __cplusplus
909 template<typename T>
910 static inline T ecb_div_rd (T val, T div)
911 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 }
914 template<typename T>
915 static inline T ecb_div_ru (T val, T div)
916 {
917 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
918 }
919#else
920 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
921 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
922#endif
923
924#if ecb_cplusplus_does_not_suck
925 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
926 template<typename T, int N>
927 static inline int ecb_array_length (const T (&arr)[N])
928 {
929 return N;
930 }
931#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif
934
935#endif
936
937/* ECB.H END */
938
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
940/* if your architecture doesn't need memory fences, e.g. because it is
941 * single-cpu/core, or if you use libev in a project that doesn't use libev
942 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
943 * libev, in which cases the memory fences become nops.
944 * alternatively, you can remove this #error and link against libpthread,
945 * which will then provide the memory fences.
946 */
947# error "memory fences not defined for your architecture, please report"
948#endif
949
950#ifndef ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE do { } while (0)
952# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
953# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
954#endif
955
956#define expect_false(cond) ecb_expect_false (cond)
957#define expect_true(cond) ecb_expect_true (cond)
958#define noinline ecb_noinline
959
381#define inline_size static inline 960#define inline_size ecb_inline
382 961
383#if EV_MINIMAL 962#if EV_FEATURE_CODE
963# define inline_speed ecb_inline
964#else
384# define inline_speed static noinline 965# define inline_speed static noinline
966#endif
967
968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
969
970#if EV_MINPRI == EV_MAXPRI
971# define ABSPRI(w) (((W)w), 0)
385#else 972#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) 973# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
974#endif
391 975
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 976#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 977#define EMPTY2(a,b) /* used to suppress some warnings */
394 978
395typedef ev_watcher *W; 979typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 983#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 984#define ev_at(w) ((WT)(w))->at
401 985
402#if EV_USE_REALTIME 986#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 987/* 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 */ 988/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 989static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 990#endif
407 991
408#if EV_USE_MONOTONIC 992#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 993static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 994#endif
411 995
996#ifndef EV_FD_TO_WIN32_HANDLE
997# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
998#endif
999#ifndef EV_WIN32_HANDLE_TO_FD
1000# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1001#endif
1002#ifndef EV_WIN32_CLOSE_FD
1003# define EV_WIN32_CLOSE_FD(fd) close (fd)
1004#endif
1005
412#ifdef _WIN32 1006#ifdef _WIN32
413# include "ev_win32.c" 1007# include "ev_win32.c"
414#endif 1008#endif
415 1009
416/*****************************************************************************/ 1010/*****************************************************************************/
417 1011
1012/* define a suitable floor function (only used by periodics atm) */
1013
1014#if EV_USE_FLOOR
1015# include <math.h>
1016# define ev_floor(v) floor (v)
1017#else
1018
1019#include <float.h>
1020
1021/* a floor() replacement function, should be independent of ev_tstamp type */
1022static ev_tstamp noinline
1023ev_floor (ev_tstamp v)
1024{
1025 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1028#else
1029 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1030#endif
1031
1032 /* argument too large for an unsigned long? */
1033 if (expect_false (v >= shift))
1034 {
1035 ev_tstamp f;
1036
1037 if (v == v - 1.)
1038 return v; /* very large number */
1039
1040 f = shift * ev_floor (v * (1. / shift));
1041 return f + ev_floor (v - f);
1042 }
1043
1044 /* special treatment for negative args? */
1045 if (expect_false (v < 0.))
1046 {
1047 ev_tstamp f = -ev_floor (-v);
1048
1049 return f - (f == v ? 0 : 1);
1050 }
1051
1052 /* fits into an unsigned long */
1053 return (unsigned long)v;
1054}
1055
1056#endif
1057
1058/*****************************************************************************/
1059
1060#ifdef __linux
1061# include <sys/utsname.h>
1062#endif
1063
1064static unsigned int noinline ecb_cold
1065ev_linux_version (void)
1066{
1067#ifdef __linux
1068 unsigned int v = 0;
1069 struct utsname buf;
1070 int i;
1071 char *p = buf.release;
1072
1073 if (uname (&buf))
1074 return 0;
1075
1076 for (i = 3+1; --i; )
1077 {
1078 unsigned int c = 0;
1079
1080 for (;;)
1081 {
1082 if (*p >= '0' && *p <= '9')
1083 c = c * 10 + *p++ - '0';
1084 else
1085 {
1086 p += *p == '.';
1087 break;
1088 }
1089 }
1090
1091 v = (v << 8) | c;
1092 }
1093
1094 return v;
1095#else
1096 return 0;
1097#endif
1098}
1099
1100/*****************************************************************************/
1101
1102#if EV_AVOID_STDIO
1103static void noinline ecb_cold
1104ev_printerr (const char *msg)
1105{
1106 write (STDERR_FILENO, msg, strlen (msg));
1107}
1108#endif
1109
418static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg) EV_THROW;
419 1111
420void 1112void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
422{ 1114{
423 syserr_cb = cb; 1115 syserr_cb = cb;
424} 1116}
425 1117
426static void noinline 1118static void noinline ecb_cold
427ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
428{ 1120{
429 if (!msg) 1121 if (!msg)
430 msg = "(libev) system error"; 1122 msg = "(libev) system error";
431 1123
432 if (syserr_cb) 1124 if (syserr_cb)
433 syserr_cb (msg); 1125 syserr_cb (msg);
434 else 1126 else
435 { 1127 {
1128#if EV_AVOID_STDIO
1129 ev_printerr (msg);
1130 ev_printerr (": ");
1131 ev_printerr (strerror (errno));
1132 ev_printerr ("\n");
1133#else
436 perror (msg); 1134 perror (msg);
1135#endif
437 abort (); 1136 abort ();
438 } 1137 }
439} 1138}
440 1139
441static void * 1140static void *
442ev_realloc_emul (void *ptr, long size) 1141ev_realloc_emul (void *ptr, long size)
443{ 1142{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
444 /* some systems, notably openbsd and darwin, fail to properly 1146 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1147 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1148 * the single unix specification, so work around them here.
447 */ 1149 */
448 1150
449 if (size) 1151 if (size)
450 return realloc (ptr, size); 1152 return realloc (ptr, size);
451 1153
452 free (ptr); 1154 free (ptr);
453 return 0; 1155 return 0;
1156#endif
454} 1157}
455 1158
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
457 1160
458void 1161void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
460{ 1163{
461 alloc = cb; 1164 alloc = cb;
462} 1165}
463 1166
464inline_speed void * 1167inline_speed void *
… …
466{ 1169{
467 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
468 1171
469 if (!ptr && size) 1172 if (!ptr && size)
470 { 1173 {
1174#if EV_AVOID_STDIO
1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1176#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1178#endif
472 abort (); 1179 abort ();
473 } 1180 }
474 1181
475 return ptr; 1182 return ptr;
476} 1183}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1185#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1186#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1187
481/*****************************************************************************/ 1188/*****************************************************************************/
482 1189
1190/* set in reify when reification needed */
1191#define EV_ANFD_REIFY 1
1192
1193/* file descriptor info structure */
483typedef struct 1194typedef struct
484{ 1195{
485 WL head; 1196 WL head;
486 unsigned char events; 1197 unsigned char events; /* the events watched for */
487 unsigned char reify; 1198 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 */ 1199 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 1200 unsigned char unused;
490#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 1202 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 1203#endif
493#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 1205 SOCKET handle;
495#endif 1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
1209#endif
496} ANFD; 1210} ANFD;
497 1211
1212/* stores the pending event set for a given watcher */
498typedef struct 1213typedef struct
499{ 1214{
500 W w; 1215 W w;
501 int events; 1216 int events; /* the pending event set for the given watcher */
502} ANPENDING; 1217} ANPENDING;
503 1218
504#if EV_USE_INOTIFY 1219#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 1220/* hash table entry per inotify-id */
506typedef struct 1221typedef struct
… …
509} ANFS; 1224} ANFS;
510#endif 1225#endif
511 1226
512/* Heap Entry */ 1227/* Heap Entry */
513#if EV_HEAP_CACHE_AT 1228#if EV_HEAP_CACHE_AT
1229 /* a heap element */
514 typedef struct { 1230 typedef struct {
515 ev_tstamp at; 1231 ev_tstamp at;
516 WT w; 1232 WT w;
517 } ANHE; 1233 } ANHE;
518 1234
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1235 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1236 #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 */ 1237 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 1238#else
1239 /* a heap element */
523 typedef WT ANHE; 1240 typedef WT ANHE;
524 1241
525 #define ANHE_w(he) (he) 1242 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 1243 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 1244 #define ANHE_at_cache(he)
… …
538 #undef VAR 1255 #undef VAR
539 }; 1256 };
540 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
541 1258
542 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
543 struct ev_loop *ev_default_loop_ptr; 1260 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
544 1261
545#else 1262#else
546 1263
547 ev_tstamp ev_rt_now; 1264 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; 1265 #define VAR(name,decl) static decl;
549 #include "ev_vars.h" 1266 #include "ev_vars.h"
550 #undef VAR 1267 #undef VAR
551 1268
552 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
553 1270
554#endif 1271#endif
555 1272
1273#if EV_FEATURE_API
1274# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1275# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1276# define EV_INVOKE_PENDING invoke_cb (EV_A)
1277#else
1278# define EV_RELEASE_CB (void)0
1279# define EV_ACQUIRE_CB (void)0
1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1281#endif
1282
1283#define EVBREAK_RECURSE 0x80
1284
556/*****************************************************************************/ 1285/*****************************************************************************/
557 1286
1287#ifndef EV_HAVE_EV_TIME
558ev_tstamp 1288ev_tstamp
559ev_time (void) 1289ev_time (void) EV_THROW
560{ 1290{
561#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 1292 if (expect_true (have_realtime))
563 { 1293 {
564 struct timespec ts; 1294 struct timespec ts;
… …
569 1299
570 struct timeval tv; 1300 struct timeval tv;
571 gettimeofday (&tv, 0); 1301 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 1302 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 1303}
1304#endif
574 1305
575inline_size ev_tstamp 1306inline_size ev_tstamp
576get_clock (void) 1307get_clock (void)
577{ 1308{
578#if EV_USE_MONOTONIC 1309#if EV_USE_MONOTONIC
… …
587 return ev_time (); 1318 return ev_time ();
588} 1319}
589 1320
590#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
591ev_tstamp 1322ev_tstamp
592ev_now (EV_P) 1323ev_now (EV_P) EV_THROW
593{ 1324{
594 return ev_rt_now; 1325 return ev_rt_now;
595} 1326}
596#endif 1327#endif
597 1328
598void 1329void
599ev_sleep (ev_tstamp delay) 1330ev_sleep (ev_tstamp delay) EV_THROW
600{ 1331{
601 if (delay > 0.) 1332 if (delay > 0.)
602 { 1333 {
603#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
604 struct timespec ts; 1335 struct timespec ts;
605 1336
606 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
610#elif defined(_WIN32) 1339#elif defined _WIN32
611 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
612#else 1341#else
613 struct timeval tv; 1342 struct timeval tv;
614 1343
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 */ 1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1345 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
622#endif 1349#endif
623 } 1350 }
624} 1351}
625 1352
626/*****************************************************************************/ 1353/*****************************************************************************/
627 1354
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1355#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 1356
1357/* find a suitable new size for the given array, */
1358/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 1359inline_size int
631array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
632{ 1361{
633 int ncur = cur + 1; 1362 int ncur = cur + 1;
634 1363
635 do 1364 do
636 ncur <<= 1; 1365 ncur <<= 1;
637 while (cnt > ncur); 1366 while (cnt > ncur);
638 1367
639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1368 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
641 { 1370 {
642 ncur *= elem; 1371 ncur *= elem;
643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1372 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
644 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
646 } 1375 }
647 1376
648 return ncur; 1377 return ncur;
649} 1378}
650 1379
651static noinline void * 1380static void * noinline ecb_cold
652array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
653{ 1382{
654 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
656} 1385}
… …
659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
660 1389
661#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
662 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
663 { \ 1392 { \
664 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
665 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
666 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
667 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
668 } 1397 }
669 1398
… …
680#define array_free(stem, idx) \ 1409#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1410 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 1411
683/*****************************************************************************/ 1412/*****************************************************************************/
684 1413
1414/* dummy callback for pending events */
1415static void noinline
1416pendingcb (EV_P_ ev_prepare *w, int revents)
1417{
1418}
1419
685void noinline 1420void noinline
686ev_feed_event (EV_P_ void *w, int revents) 1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW
687{ 1422{
688 W w_ = (W)w; 1423 W w_ = (W)w;
689 int pri = ABSPRI (w_); 1424 int pri = ABSPRI (w_);
690 1425
691 if (expect_false (w_->pending)) 1426 if (expect_false (w_->pending))
… …
724} 1459}
725 1460
726/*****************************************************************************/ 1461/*****************************************************************************/
727 1462
728inline_speed void 1463inline_speed void
729fd_event (EV_P_ int fd, int revents) 1464fd_event_nocheck (EV_P_ int fd, int revents)
730{ 1465{
731 ANFD *anfd = anfds + fd; 1466 ANFD *anfd = anfds + fd;
732 ev_io *w; 1467 ev_io *w;
733 1468
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1469 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 1473 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 1474 ev_feed_event (EV_A_ (W)w, ev);
740 } 1475 }
741} 1476}
742 1477
1478/* do not submit kernel events for fds that have reify set */
1479/* because that means they changed while we were polling for new events */
1480inline_speed void
1481fd_event (EV_P_ int fd, int revents)
1482{
1483 ANFD *anfd = anfds + fd;
1484
1485 if (expect_true (!anfd->reify))
1486 fd_event_nocheck (EV_A_ fd, revents);
1487}
1488
743void 1489void
744ev_feed_fd_event (EV_P_ int fd, int revents) 1490ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
745{ 1491{
746 if (fd >= 0 && fd < anfdmax) 1492 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 1493 fd_event_nocheck (EV_A_ fd, revents);
748} 1494}
749 1495
1496/* make sure the external fd watch events are in-sync */
1497/* with the kernel/libev internal state */
750inline_size void 1498inline_size void
751fd_reify (EV_P) 1499fd_reify (EV_P)
752{ 1500{
753 int i; 1501 int i;
1502
1503#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1504 for (i = 0; i < fdchangecnt; ++i)
1505 {
1506 int fd = fdchanges [i];
1507 ANFD *anfd = anfds + fd;
1508
1509 if (anfd->reify & EV__IOFDSET && anfd->head)
1510 {
1511 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1512
1513 if (handle != anfd->handle)
1514 {
1515 unsigned long arg;
1516
1517 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1518
1519 /* handle changed, but fd didn't - we need to do it in two steps */
1520 backend_modify (EV_A_ fd, anfd->events, 0);
1521 anfd->events = 0;
1522 anfd->handle = handle;
1523 }
1524 }
1525 }
1526#endif
754 1527
755 for (i = 0; i < fdchangecnt; ++i) 1528 for (i = 0; i < fdchangecnt; ++i)
756 { 1529 {
757 int fd = fdchanges [i]; 1530 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 1531 ANFD *anfd = anfds + fd;
759 ev_io *w; 1532 ev_io *w;
760 1533
761 unsigned char events = 0; 1534 unsigned char o_events = anfd->events;
1535 unsigned char o_reify = anfd->reify;
762 1536
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1537 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 1538
766#if EV_SELECT_IS_WINSOCKET 1539 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 1540 {
769 unsigned long arg; 1541 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 1542
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1543 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 1544 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 1545
774 #endif 1546 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1547 o_reify = EV__IOFDSET; /* actually |= */
776 } 1548 }
777#endif
778 1549
779 { 1550 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); 1551 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1552 }
790 1553
791 fdchangecnt = 0; 1554 fdchangecnt = 0;
792} 1555}
793 1556
1557/* something about the given fd changed */
794inline_size void 1558inline_size void
795fd_change (EV_P_ int fd, int flags) 1559fd_change (EV_P_ int fd, int flags)
796{ 1560{
797 unsigned char reify = anfds [fd].reify; 1561 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1562 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1567 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1568 fdchanges [fdchangecnt - 1] = fd;
805 } 1569 }
806} 1570}
807 1571
1572/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1573inline_speed void ecb_cold
809fd_kill (EV_P_ int fd) 1574fd_kill (EV_P_ int fd)
810{ 1575{
811 ev_io *w; 1576 ev_io *w;
812 1577
813 while ((w = (ev_io *)anfds [fd].head)) 1578 while ((w = (ev_io *)anfds [fd].head))
… …
815 ev_io_stop (EV_A_ w); 1580 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1581 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1582 }
818} 1583}
819 1584
1585/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1586inline_size int ecb_cold
821fd_valid (int fd) 1587fd_valid (int fd)
822{ 1588{
823#ifdef _WIN32 1589#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1590 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1591#else
826 return fcntl (fd, F_GETFD) != -1; 1592 return fcntl (fd, F_GETFD) != -1;
827#endif 1593#endif
828} 1594}
829 1595
830/* called on EBADF to verify fds */ 1596/* called on EBADF to verify fds */
831static void noinline 1597static void noinline ecb_cold
832fd_ebadf (EV_P) 1598fd_ebadf (EV_P)
833{ 1599{
834 int fd; 1600 int fd;
835 1601
836 for (fd = 0; fd < anfdmax; ++fd) 1602 for (fd = 0; fd < anfdmax; ++fd)
… …
838 if (!fd_valid (fd) && errno == EBADF) 1604 if (!fd_valid (fd) && errno == EBADF)
839 fd_kill (EV_A_ fd); 1605 fd_kill (EV_A_ fd);
840} 1606}
841 1607
842/* called on ENOMEM in select/poll to kill some fds and retry */ 1608/* called on ENOMEM in select/poll to kill some fds and retry */
843static void noinline 1609static void noinline ecb_cold
844fd_enomem (EV_P) 1610fd_enomem (EV_P)
845{ 1611{
846 int fd; 1612 int fd;
847 1613
848 for (fd = anfdmax; fd--; ) 1614 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1615 if (anfds [fd].events)
850 { 1616 {
851 fd_kill (EV_A_ fd); 1617 fd_kill (EV_A_ fd);
852 return; 1618 break;
853 } 1619 }
854} 1620}
855 1621
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1622/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1623static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1628 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1629 if (anfds [fd].events)
864 { 1630 {
865 anfds [fd].events = 0; 1631 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1632 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1633 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1634 }
869} 1635}
870 1636
1637/* used to prepare libev internal fd's */
1638/* this is not fork-safe */
1639inline_speed void
1640fd_intern (int fd)
1641{
1642#ifdef _WIN32
1643 unsigned long arg = 1;
1644 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1645#else
1646 fcntl (fd, F_SETFD, FD_CLOEXEC);
1647 fcntl (fd, F_SETFL, O_NONBLOCK);
1648#endif
1649}
1650
871/*****************************************************************************/ 1651/*****************************************************************************/
872 1652
873/* 1653/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1654 * 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 1655 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1656 * the branching factor of the d-tree.
877 */ 1657 */
878 1658
879/* 1659/*
… …
947 1727
948 for (;;) 1728 for (;;)
949 { 1729 {
950 int c = k << 1; 1730 int c = k << 1;
951 1731
952 if (c > N + HEAP0 - 1) 1732 if (c >= N + HEAP0)
953 break; 1733 break;
954 1734
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1735 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1736 ? 1 : 0;
957 1737
… …
989 1769
990 heap [k] = he; 1770 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1771 ev_active (ANHE_w (he)) = k;
992} 1772}
993 1773
1774/* move an element suitably so it is in a correct place */
994inline_size void 1775inline_size void
995adjustheap (ANHE *heap, int N, int k) 1776adjustheap (ANHE *heap, int N, int k)
996{ 1777{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1778 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1779 upheap (heap, k);
999 else 1780 else
1000 downheap (heap, N, k); 1781 downheap (heap, N, k);
1001} 1782}
1002 1783
… …
1012 upheap (heap, i + HEAP0); 1793 upheap (heap, i + HEAP0);
1013} 1794}
1014 1795
1015/*****************************************************************************/ 1796/*****************************************************************************/
1016 1797
1798/* associate signal watchers to a signal signal */
1017typedef struct 1799typedef struct
1018{ 1800{
1801 EV_ATOMIC_T pending;
1802#if EV_MULTIPLICITY
1803 EV_P;
1804#endif
1019 WL head; 1805 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1806} ANSIG;
1022 1807
1023static ANSIG *signals; 1808static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1809
1028/*****************************************************************************/ 1810/*****************************************************************************/
1029 1811
1030inline_speed void 1812#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 1813
1042static void noinline 1814static void noinline ecb_cold
1043evpipe_init (EV_P) 1815evpipe_init (EV_P)
1044{ 1816{
1045 if (!ev_is_active (&pipeev)) 1817 if (!ev_is_active (&pipe_w))
1046 { 1818 {
1047#if EV_USE_EVENTFD 1819# if EV_USE_EVENTFD
1820 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1821 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1822 evfd = eventfd (0, 0);
1823
1824 if (evfd >= 0)
1049 { 1825 {
1050 evpipe [0] = -1; 1826 evpipe [0] = -1;
1051 fd_intern (evfd); 1827 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1828 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1829 }
1054 else 1830 else
1055#endif 1831# endif
1056 { 1832 {
1057 while (pipe (evpipe)) 1833 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1834 ev_syserr ("(libev) error creating signal/async pipe");
1059 1835
1060 fd_intern (evpipe [0]); 1836 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1837 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1838 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1839 }
1064 1840
1065 ev_io_start (EV_A_ &pipeev); 1841 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1842 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1843 }
1068} 1844}
1069 1845
1070inline_size void 1846inline_speed void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1847evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1848{
1073 if (!*flag) 1849 if (expect_true (*flag))
1850 return;
1851
1852 *flag = 1;
1853
1854 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1855
1856 pipe_write_skipped = 1;
1857
1858 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1859
1860 if (pipe_write_wanted)
1074 { 1861 {
1862 int old_errno;
1863
1864 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1865
1075 int old_errno = errno; /* save errno because write might clobber it */ 1866 old_errno = errno; /* save errno because write will clobber it */
1076
1077 *flag = 1;
1078 1867
1079#if EV_USE_EVENTFD 1868#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1869 if (evfd >= 0)
1081 { 1870 {
1082 uint64_t counter = 1; 1871 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1872 write (evfd, &counter, sizeof (uint64_t));
1084 } 1873 }
1085 else 1874 else
1086#endif 1875#endif
1876 {
1877 /* win32 people keep sending patches that change this write() to send() */
1878 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1879 /* so when you think this write should be a send instead, please find out */
1880 /* where your send() is from - it's definitely not the microsoft send, and */
1881 /* tell me. thank you. */
1882 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1883 /* check the ev documentation on how to use this flag */
1087 write (evpipe [1], &old_errno, 1); 1884 write (evpipe [1], &(evpipe [1]), 1);
1885 }
1088 1886
1089 errno = old_errno; 1887 errno = old_errno;
1090 } 1888 }
1091} 1889}
1092 1890
1891/* called whenever the libev signal pipe */
1892/* got some events (signal, async) */
1093static void 1893static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1894pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1895{
1896 int i;
1897
1898 if (revents & EV_READ)
1899 {
1096#if EV_USE_EVENTFD 1900#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1901 if (evfd >= 0)
1098 { 1902 {
1099 uint64_t counter; 1903 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1904 read (evfd, &counter, sizeof (uint64_t));
1101 } 1905 }
1102 else 1906 else
1103#endif 1907#endif
1104 { 1908 {
1105 char dummy; 1909 char dummy;
1910 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1911 read (evpipe [0], &dummy, 1);
1912 }
1913 }
1914
1915 pipe_write_skipped = 0;
1916
1917#if EV_SIGNAL_ENABLE
1918 if (sig_pending)
1107 } 1919 {
1920 sig_pending = 0;
1108 1921
1109 if (gotsig && ev_is_default_loop (EV_A)) 1922 for (i = EV_NSIG - 1; i--; )
1110 { 1923 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); 1924 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1925 }
1926#endif
1118 1927
1119#if EV_ASYNC_ENABLE 1928#if EV_ASYNC_ENABLE
1120 if (gotasync) 1929 if (async_pending)
1121 { 1930 {
1122 int i; 1931 async_pending = 0;
1123 gotasync = 0;
1124 1932
1125 for (i = asynccnt; i--; ) 1933 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1934 if (asyncs [i]->sent)
1127 { 1935 {
1128 asyncs [i]->sent = 0; 1936 asyncs [i]->sent = 0;
… …
1132#endif 1940#endif
1133} 1941}
1134 1942
1135/*****************************************************************************/ 1943/*****************************************************************************/
1136 1944
1945void
1946ev_feed_signal (int signum) EV_THROW
1947{
1948#if EV_MULTIPLICITY
1949 EV_P = signals [signum - 1].loop;
1950
1951 if (!EV_A)
1952 return;
1953#endif
1954
1955 if (!ev_active (&pipe_w))
1956 return;
1957
1958 signals [signum - 1].pending = 1;
1959 evpipe_write (EV_A_ &sig_pending);
1960}
1961
1137static void 1962static void
1138ev_sighandler (int signum) 1963ev_sighandler (int signum)
1139{ 1964{
1965#ifdef _WIN32
1966 signal (signum, ev_sighandler);
1967#endif
1968
1969 ev_feed_signal (signum);
1970}
1971
1972void noinline
1973ev_feed_signal_event (EV_P_ int signum) EV_THROW
1974{
1975 WL w;
1976
1977 if (expect_false (signum <= 0 || signum > EV_NSIG))
1978 return;
1979
1980 --signum;
1981
1140#if EV_MULTIPLICITY 1982#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct; 1983 /* it is permissible to try to feed a signal to the wrong loop */
1142#endif 1984 /* or, likely more useful, feeding a signal nobody is waiting for */
1143 1985
1144#if _WIN32 1986 if (expect_false (signals [signum].loop != EV_A))
1145 signal (signum, ev_sighandler);
1146#endif
1147
1148 signals [signum - 1].gotsig = 1;
1149 evpipe_write (EV_A_ &gotsig);
1150}
1151
1152void noinline
1153ev_feed_signal_event (EV_P_ int signum)
1154{
1155 WL w;
1156
1157#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1159#endif
1160
1161 --signum;
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1987 return;
1988#endif
1165 1989
1166 signals [signum].gotsig = 0; 1990 signals [signum].pending = 0;
1167 1991
1168 for (w = signals [signum].head; w; w = w->next) 1992 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1993 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1994}
1171 1995
1996#if EV_USE_SIGNALFD
1997static void
1998sigfdcb (EV_P_ ev_io *iow, int revents)
1999{
2000 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2001
2002 for (;;)
2003 {
2004 ssize_t res = read (sigfd, si, sizeof (si));
2005
2006 /* not ISO-C, as res might be -1, but works with SuS */
2007 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2008 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2009
2010 if (res < (ssize_t)sizeof (si))
2011 break;
2012 }
2013}
2014#endif
2015
2016#endif
2017
1172/*****************************************************************************/ 2018/*****************************************************************************/
1173 2019
2020#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 2021static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 2022
1178static ev_signal childev; 2023static ev_signal childev;
1179 2024
1180#ifndef WIFCONTINUED 2025#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 2026# define WIFCONTINUED(status) 0
1182#endif 2027#endif
1183 2028
2029/* handle a single child status event */
1184inline_speed void 2030inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 2031child_reap (EV_P_ int chain, int pid, int status)
1186{ 2032{
1187 ev_child *w; 2033 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2034 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 2035
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2036 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 2037 {
1192 if ((w->pid == pid || !w->pid) 2038 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 2039 && (!traced || (w->flags & 1)))
1194 { 2040 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2041 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 2048
1203#ifndef WCONTINUED 2049#ifndef WCONTINUED
1204# define WCONTINUED 0 2050# define WCONTINUED 0
1205#endif 2051#endif
1206 2052
2053/* called on sigchld etc., calls waitpid */
1207static void 2054static void
1208childcb (EV_P_ ev_signal *sw, int revents) 2055childcb (EV_P_ ev_signal *sw, int revents)
1209{ 2056{
1210 int pid, status; 2057 int pid, status;
1211 2058
… …
1219 /* make sure we are called again until all children have been reaped */ 2066 /* 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 */ 2067 /* 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); 2068 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 2069
1223 child_reap (EV_A_ pid, pid, status); 2070 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 2071 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2072 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 2073}
1227 2074
1228#endif 2075#endif
1229 2076
1230/*****************************************************************************/ 2077/*****************************************************************************/
1231 2078
2079#if EV_USE_IOCP
2080# include "ev_iocp.c"
2081#endif
1232#if EV_USE_PORT 2082#if EV_USE_PORT
1233# include "ev_port.c" 2083# include "ev_port.c"
1234#endif 2084#endif
1235#if EV_USE_KQUEUE 2085#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 2086# include "ev_kqueue.c"
… …
1243#endif 2093#endif
1244#if EV_USE_SELECT 2094#if EV_USE_SELECT
1245# include "ev_select.c" 2095# include "ev_select.c"
1246#endif 2096#endif
1247 2097
1248int 2098int ecb_cold
1249ev_version_major (void) 2099ev_version_major (void) EV_THROW
1250{ 2100{
1251 return EV_VERSION_MAJOR; 2101 return EV_VERSION_MAJOR;
1252} 2102}
1253 2103
1254int 2104int ecb_cold
1255ev_version_minor (void) 2105ev_version_minor (void) EV_THROW
1256{ 2106{
1257 return EV_VERSION_MINOR; 2107 return EV_VERSION_MINOR;
1258} 2108}
1259 2109
1260/* return true if we are running with elevated privileges and should ignore env variables */ 2110/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 2111int inline_size ecb_cold
1262enable_secure (void) 2112enable_secure (void)
1263{ 2113{
1264#ifdef _WIN32 2114#ifdef _WIN32
1265 return 0; 2115 return 0;
1266#else 2116#else
1267 return getuid () != geteuid () 2117 return getuid () != geteuid ()
1268 || getgid () != getegid (); 2118 || getgid () != getegid ();
1269#endif 2119#endif
1270} 2120}
1271 2121
1272unsigned int 2122unsigned int ecb_cold
1273ev_supported_backends (void) 2123ev_supported_backends (void) EV_THROW
1274{ 2124{
1275 unsigned int flags = 0; 2125 unsigned int flags = 0;
1276 2126
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2127 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1278 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2128 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2131 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1282 2132
1283 return flags; 2133 return flags;
1284} 2134}
1285 2135
1286unsigned int 2136unsigned int ecb_cold
1287ev_recommended_backends (void) 2137ev_recommended_backends (void) EV_THROW
1288{ 2138{
1289 unsigned int flags = ev_supported_backends (); 2139 unsigned int flags = ev_supported_backends ();
1290 2140
1291#ifndef __NetBSD__ 2141#ifndef __NetBSD__
1292 /* kqueue is borked on everything but netbsd apparently */ 2142 /* kqueue is borked on everything but netbsd apparently */
… …
1296#ifdef __APPLE__ 2146#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 2147 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2148 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2149 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 2150#endif
2151#ifdef __FreeBSD__
2152 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2153#endif
1301 2154
1302 return flags; 2155 return flags;
1303} 2156}
1304 2157
2158unsigned int ecb_cold
2159ev_embeddable_backends (void) EV_THROW
2160{
2161 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2162
2163 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2164 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2165 flags &= ~EVBACKEND_EPOLL;
2166
2167 return flags;
2168}
2169
1305unsigned int 2170unsigned int
1306ev_embeddable_backends (void) 2171ev_backend (EV_P) EV_THROW
1307{ 2172{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2173 return backend;
1309
1310 /* 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 */
1312 flags &= ~EVBACKEND_EPOLL;
1313
1314 return flags;
1315} 2174}
1316 2175
2176#if EV_FEATURE_API
1317unsigned int 2177unsigned int
1318ev_backend (EV_P) 2178ev_iteration (EV_P) EV_THROW
1319{ 2179{
1320 return backend; 2180 return loop_count;
1321} 2181}
1322 2182
1323unsigned int 2183unsigned int
1324ev_loop_count (EV_P) 2184ev_depth (EV_P) EV_THROW
1325{ 2185{
1326 return loop_count; 2186 return loop_depth;
1327} 2187}
1328 2188
1329void 2189void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2190ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1331{ 2191{
1332 io_blocktime = interval; 2192 io_blocktime = interval;
1333} 2193}
1334 2194
1335void 2195void
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2196ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1337{ 2197{
1338 timeout_blocktime = interval; 2198 timeout_blocktime = interval;
1339} 2199}
1340 2200
2201void
2202ev_set_userdata (EV_P_ void *data) EV_THROW
2203{
2204 userdata = data;
2205}
2206
2207void *
2208ev_userdata (EV_P) EV_THROW
2209{
2210 return userdata;
2211}
2212
2213void
2214ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2215{
2216 invoke_cb = invoke_pending_cb;
2217}
2218
2219void
2220ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2221{
2222 release_cb = release;
2223 acquire_cb = acquire;
2224}
2225#endif
2226
2227/* initialise a loop structure, must be zero-initialised */
1341static void noinline 2228static void noinline ecb_cold
1342loop_init (EV_P_ unsigned int flags) 2229loop_init (EV_P_ unsigned int flags) EV_THROW
1343{ 2230{
1344 if (!backend) 2231 if (!backend)
1345 { 2232 {
2233 origflags = flags;
2234
1346#if EV_USE_REALTIME 2235#if EV_USE_REALTIME
1347 if (!have_realtime) 2236 if (!have_realtime)
1348 { 2237 {
1349 struct timespec ts; 2238 struct timespec ts;
1350 2239
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2250 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 2251 have_monotonic = 1;
1363 } 2252 }
1364#endif 2253#endif
1365 2254
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 */ 2255 /* pid check not overridable via env */
1381#ifndef _WIN32 2256#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 2257 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 2258 curpid = getpid ();
1384#endif 2259#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 2261 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 2262 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 2263 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 2264 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 2265
1391 if (!(flags & 0x0000ffffU)) 2266 ev_rt_now = ev_time ();
2267 mn_now = get_clock ();
2268 now_floor = mn_now;
2269 rtmn_diff = ev_rt_now - mn_now;
2270#if EV_FEATURE_API
2271 invoke_cb = ev_invoke_pending;
2272#endif
2273
2274 io_blocktime = 0.;
2275 timeout_blocktime = 0.;
2276 backend = 0;
2277 backend_fd = -1;
2278 sig_pending = 0;
2279#if EV_ASYNC_ENABLE
2280 async_pending = 0;
2281#endif
2282 pipe_write_skipped = 0;
2283 pipe_write_wanted = 0;
2284#if EV_USE_INOTIFY
2285 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2286#endif
2287#if EV_USE_SIGNALFD
2288 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2289#endif
2290
2291 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 2292 flags |= ev_recommended_backends ();
1393 2293
2294#if EV_USE_IOCP
2295 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2296#endif
1394#if EV_USE_PORT 2297#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2298 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 2299#endif
1397#if EV_USE_KQUEUE 2300#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2301 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 2308#endif
1406#if EV_USE_SELECT 2309#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2310 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 2311#endif
1409 2312
2313 ev_prepare_init (&pending_w, pendingcb);
2314
2315#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 2316 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 2317 ev_set_priority (&pipe_w, EV_MAXPRI);
2318#endif
1412 } 2319 }
1413} 2320}
1414 2321
1415static void noinline 2322/* free up a loop structure */
2323void ecb_cold
1416loop_destroy (EV_P) 2324ev_loop_destroy (EV_P)
1417{ 2325{
1418 int i; 2326 int i;
1419 2327
2328#if EV_MULTIPLICITY
2329 /* mimic free (0) */
2330 if (!EV_A)
2331 return;
2332#endif
2333
2334#if EV_CLEANUP_ENABLE
2335 /* queue cleanup watchers (and execute them) */
2336 if (expect_false (cleanupcnt))
2337 {
2338 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2339 EV_INVOKE_PENDING;
2340 }
2341#endif
2342
2343#if EV_CHILD_ENABLE
2344 if (ev_is_active (&childev))
2345 {
2346 ev_ref (EV_A); /* child watcher */
2347 ev_signal_stop (EV_A_ &childev);
2348 }
2349#endif
2350
1420 if (ev_is_active (&pipeev)) 2351 if (ev_is_active (&pipe_w))
1421 { 2352 {
1422 ev_ref (EV_A); /* signal watcher */ 2353 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 2354 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 2355
1425#if EV_USE_EVENTFD 2356#if EV_USE_EVENTFD
1426 if (evfd >= 0) 2357 if (evfd >= 0)
1427 close (evfd); 2358 close (evfd);
1428#endif 2359#endif
1429 2360
1430 if (evpipe [0] >= 0) 2361 if (evpipe [0] >= 0)
1431 { 2362 {
1432 close (evpipe [0]); 2363 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 2364 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 2365 }
1435 } 2366 }
2367
2368#if EV_USE_SIGNALFD
2369 if (ev_is_active (&sigfd_w))
2370 close (sigfd);
2371#endif
1436 2372
1437#if EV_USE_INOTIFY 2373#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 2374 if (fs_fd >= 0)
1439 close (fs_fd); 2375 close (fs_fd);
1440#endif 2376#endif
1441 2377
1442 if (backend_fd >= 0) 2378 if (backend_fd >= 0)
1443 close (backend_fd); 2379 close (backend_fd);
1444 2380
2381#if EV_USE_IOCP
2382 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2383#endif
1445#if EV_USE_PORT 2384#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2385 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 2386#endif
1448#if EV_USE_KQUEUE 2387#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2388 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 2403#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 2404 array_free (idle, [i]);
1466#endif 2405#endif
1467 } 2406 }
1468 2407
1469 ev_free (anfds); anfdmax = 0; 2408 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 2409
1471 /* have to use the microsoft-never-gets-it-right macro */ 2410 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 2411 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 2412 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 2413 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 2415 array_free (periodic, EMPTY);
1477#endif 2416#endif
1478#if EV_FORK_ENABLE 2417#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 2418 array_free (fork, EMPTY);
1480#endif 2419#endif
2420#if EV_CLEANUP_ENABLE
2421 array_free (cleanup, EMPTY);
2422#endif
1481 array_free (prepare, EMPTY); 2423 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 2424 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 2425#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 2426 array_free (async, EMPTY);
1485#endif 2427#endif
1486 2428
1487 backend = 0; 2429 backend = 0;
2430
2431#if EV_MULTIPLICITY
2432 if (ev_is_default_loop (EV_A))
2433#endif
2434 ev_default_loop_ptr = 0;
2435#if EV_MULTIPLICITY
2436 else
2437 ev_free (EV_A);
2438#endif
1488} 2439}
1489 2440
1490#if EV_USE_INOTIFY 2441#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 2442inline_size void infy_fork (EV_P);
1492#endif 2443#endif
… …
1505#endif 2456#endif
1506#if EV_USE_INOTIFY 2457#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 2458 infy_fork (EV_A);
1508#endif 2459#endif
1509 2460
1510 if (ev_is_active (&pipeev)) 2461 if (ev_is_active (&pipe_w))
1511 { 2462 {
1512 /* this "locks" the handlers against writing to the pipe */ 2463 /* 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 2464
1519 ev_ref (EV_A); 2465 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 2466 ev_io_stop (EV_A_ &pipe_w);
1521 2467
1522#if EV_USE_EVENTFD 2468#if EV_USE_EVENTFD
1523 if (evfd >= 0) 2469 if (evfd >= 0)
1524 close (evfd); 2470 close (evfd);
1525#endif 2471#endif
1526 2472
1527 if (evpipe [0] >= 0) 2473 if (evpipe [0] >= 0)
1528 { 2474 {
1529 close (evpipe [0]); 2475 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 2476 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 2477 }
1532 2478
2479#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 2480 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 2481 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 2482 pipecb (EV_A_ &pipe_w, EV_READ);
2483#endif
1536 } 2484 }
1537 2485
1538 postfork = 0; 2486 postfork = 0;
1539} 2487}
1540 2488
1541#if EV_MULTIPLICITY 2489#if EV_MULTIPLICITY
1542 2490
1543struct ev_loop * 2491struct ev_loop * ecb_cold
1544ev_loop_new (unsigned int flags) 2492ev_loop_new (unsigned int flags) EV_THROW
1545{ 2493{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2494 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 2495
1548 memset (loop, 0, sizeof (struct ev_loop)); 2496 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 2497 loop_init (EV_A_ flags);
1551 2498
1552 if (ev_backend (EV_A)) 2499 if (ev_backend (EV_A))
1553 return loop; 2500 return EV_A;
1554 2501
2502 ev_free (EV_A);
1555 return 0; 2503 return 0;
1556} 2504}
1557 2505
1558void 2506#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 2507
1571#if EV_VERIFY 2508#if EV_VERIFY
1572static void noinline 2509static void noinline ecb_cold
1573verify_watcher (EV_P_ W w) 2510verify_watcher (EV_P_ W w)
1574{ 2511{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2512 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 2513
1577 if (w->pending) 2514 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2515 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 2516}
1580 2517
1581static void noinline 2518static void noinline ecb_cold
1582verify_heap (EV_P_ ANHE *heap, int N) 2519verify_heap (EV_P_ ANHE *heap, int N)
1583{ 2520{
1584 int i; 2521 int i;
1585 2522
1586 for (i = HEAP0; i < N + HEAP0; ++i) 2523 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 2528
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2529 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 2530 }
1594} 2531}
1595 2532
1596static void noinline 2533static void noinline ecb_cold
1597array_verify (EV_P_ W *ws, int cnt) 2534array_verify (EV_P_ W *ws, int cnt)
1598{ 2535{
1599 while (cnt--) 2536 while (cnt--)
1600 { 2537 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2538 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 2539 verify_watcher (EV_A_ ws [cnt]);
1603 } 2540 }
1604} 2541}
1605#endif 2542#endif
1606 2543
1607void 2544#if EV_FEATURE_API
1608ev_loop_verify (EV_P) 2545void ecb_cold
2546ev_verify (EV_P) EV_THROW
1609{ 2547{
1610#if EV_VERIFY 2548#if EV_VERIFY
1611 int i; 2549 int i;
1612 WL w; 2550 WL w;
1613 2551
… …
1647#if EV_FORK_ENABLE 2585#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2586 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2587 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2588#endif
1651 2589
2590#if EV_CLEANUP_ENABLE
2591 assert (cleanupmax >= cleanupcnt);
2592 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2593#endif
2594
1652#if EV_ASYNC_ENABLE 2595#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2596 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2597 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2598#endif
1656 2599
2600#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2601 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2602 array_verify (EV_A_ (W *)prepares, preparecnt);
2603#endif
1659 2604
2605#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2606 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2607 array_verify (EV_A_ (W *)checks, checkcnt);
2608#endif
1662 2609
1663# if 0 2610# if 0
2611#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2612 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) 2613 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2614#endif
1666# endif 2615# endif
1667#endif 2616#endif
1668} 2617}
1669 2618#endif
1670#endif /* multiplicity */
1671 2619
1672#if EV_MULTIPLICITY 2620#if EV_MULTIPLICITY
1673struct ev_loop * 2621struct ev_loop * ecb_cold
1674ev_default_loop_init (unsigned int flags)
1675#else 2622#else
1676int 2623int
2624#endif
1677ev_default_loop (unsigned int flags) 2625ev_default_loop (unsigned int flags) EV_THROW
1678#endif
1679{ 2626{
1680 if (!ev_default_loop_ptr) 2627 if (!ev_default_loop_ptr)
1681 { 2628 {
1682#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2630 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2631#else
1685 ev_default_loop_ptr = 1; 2632 ev_default_loop_ptr = 1;
1686#endif 2633#endif
1687 2634
1688 loop_init (EV_A_ flags); 2635 loop_init (EV_A_ flags);
1689 2636
1690 if (ev_backend (EV_A)) 2637 if (ev_backend (EV_A))
1691 { 2638 {
1692#ifndef _WIN32 2639#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2640 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2641 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2642 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2643 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2644#endif
… …
1702 2649
1703 return ev_default_loop_ptr; 2650 return ev_default_loop_ptr;
1704} 2651}
1705 2652
1706void 2653void
1707ev_default_destroy (void) 2654ev_loop_fork (EV_P) EV_THROW
1708{ 2655{
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 */ 2656 postfork = 1; /* must be in line with ev_default_fork */
1731} 2657}
1732 2658
1733/*****************************************************************************/ 2659/*****************************************************************************/
1734 2660
1735void 2661void
1736ev_invoke (EV_P_ void *w, int revents) 2662ev_invoke (EV_P_ void *w, int revents)
1737{ 2663{
1738 EV_CB_INVOKE ((W)w, revents); 2664 EV_CB_INVOKE ((W)w, revents);
1739} 2665}
1740 2666
1741inline_speed void 2667unsigned int
1742call_pending (EV_P) 2668ev_pending_count (EV_P) EV_THROW
2669{
2670 int pri;
2671 unsigned int count = 0;
2672
2673 for (pri = NUMPRI; pri--; )
2674 count += pendingcnt [pri];
2675
2676 return count;
2677}
2678
2679void noinline
2680ev_invoke_pending (EV_P)
1743{ 2681{
1744 int pri; 2682 int pri;
1745 2683
1746 for (pri = NUMPRI; pri--; ) 2684 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2685 while (pendingcnt [pri])
1748 { 2686 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2687 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2688
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; 2689 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2690 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2691 EV_FREQUENT_CHECK;
1758 }
1759 } 2692 }
1760} 2693}
1761 2694
1762#if EV_IDLE_ENABLE 2695#if EV_IDLE_ENABLE
2696/* make idle watchers pending. this handles the "call-idle */
2697/* only when higher priorities are idle" logic */
1763inline_size void 2698inline_size void
1764idle_reify (EV_P) 2699idle_reify (EV_P)
1765{ 2700{
1766 if (expect_false (idleall)) 2701 if (expect_false (idleall))
1767 { 2702 {
… …
1780 } 2715 }
1781 } 2716 }
1782} 2717}
1783#endif 2718#endif
1784 2719
2720/* make timers pending */
1785inline_size void 2721inline_size void
1786timers_reify (EV_P) 2722timers_reify (EV_P)
1787{ 2723{
1788 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
1789 2725
… …
1813 EV_FREQUENT_CHECK; 2749 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2750 feed_reverse (EV_A_ (W)w);
1815 } 2751 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2752 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2753
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2754 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2755 }
1820} 2756}
1821 2757
1822#if EV_PERIODIC_ENABLE 2758#if EV_PERIODIC_ENABLE
2759
2760static void noinline
2761periodic_recalc (EV_P_ ev_periodic *w)
2762{
2763 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2764 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2765
2766 /* the above almost always errs on the low side */
2767 while (at <= ev_rt_now)
2768 {
2769 ev_tstamp nat = at + w->interval;
2770
2771 /* when resolution fails us, we use ev_rt_now */
2772 if (expect_false (nat == at))
2773 {
2774 at = ev_rt_now;
2775 break;
2776 }
2777
2778 at = nat;
2779 }
2780
2781 ev_at (w) = at;
2782}
2783
2784/* make periodics pending */
1823inline_size void 2785inline_size void
1824periodics_reify (EV_P) 2786periodics_reify (EV_P)
1825{ 2787{
1826 EV_FREQUENT_CHECK; 2788 EV_FREQUENT_CHECK;
1827 2789
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2807 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2808 downheap (periodics, periodiccnt, HEAP0);
1847 } 2809 }
1848 else if (w->interval) 2810 else if (w->interval)
1849 { 2811 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2812 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]); 2813 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2814 downheap (periodics, periodiccnt, HEAP0);
1866 } 2815 }
1867 else 2816 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2817 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2823
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2824 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2825 }
1877} 2826}
1878 2827
2828/* simply recalculate all periodics */
2829/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2830static void noinline ecb_cold
1880periodics_reschedule (EV_P) 2831periodics_reschedule (EV_P)
1881{ 2832{
1882 int i; 2833 int i;
1883 2834
1884 /* adjust periodics after time jump */ 2835 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2838 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2839
1889 if (w->reschedule_cb) 2840 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2841 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2842 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2843 periodic_recalc (EV_A_ w);
1893 2844
1894 ANHE_at_cache (periodics [i]); 2845 ANHE_at_cache (periodics [i]);
1895 } 2846 }
1896 2847
1897 reheap (periodics, periodiccnt); 2848 reheap (periodics, periodiccnt);
1898} 2849}
1899#endif 2850#endif
1900 2851
2852/* adjust all timers by a given offset */
1901static void noinline 2853static void noinline ecb_cold
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2854timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2855{
1904 int i; 2856 int i;
1905 2857
1906 for (i = 0; i < timercnt; ++i) 2858 for (i = 0; i < timercnt; ++i)
… …
1909 ANHE_w (*he)->at += adjust; 2861 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2862 ANHE_at_cache (*he);
1911 } 2863 }
1912} 2864}
1913 2865
2866/* fetch new monotonic and realtime times from the kernel */
2867/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2868inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2869time_update (EV_P_ ev_tstamp max_block)
1916{ 2870{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2871#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2872 if (expect_true (have_monotonic))
1921 { 2873 {
2874 int i;
1922 ev_tstamp odiff = rtmn_diff; 2875 ev_tstamp odiff = rtmn_diff;
1923 2876
1924 mn_now = get_clock (); 2877 mn_now = get_clock ();
1925 2878
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2879 /* 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 2895 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 2896 * in the unlikely event of having been preempted here.
1944 */ 2897 */
1945 for (i = 4; --i; ) 2898 for (i = 4; --i; )
1946 { 2899 {
2900 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 2901 rtmn_diff = ev_rt_now - mn_now;
1948 2902
2903 diff = odiff - rtmn_diff;
2904
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2905 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 2906 return; /* all is well */
1951 2907
1952 ev_rt_now = ev_time (); 2908 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 2909 mn_now = get_clock ();
1954 now_floor = mn_now; 2910 now_floor = mn_now;
… …
1976 2932
1977 mn_now = ev_rt_now; 2933 mn_now = ev_rt_now;
1978 } 2934 }
1979} 2935}
1980 2936
1981static int loop_done; 2937int
1982
1983void
1984ev_loop (EV_P_ int flags) 2938ev_run (EV_P_ int flags)
1985{ 2939{
2940#if EV_FEATURE_API
2941 ++loop_depth;
2942#endif
2943
2944 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2945
1986 loop_done = EVUNLOOP_CANCEL; 2946 loop_done = EVBREAK_CANCEL;
1987 2947
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2948 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 2949
1990 do 2950 do
1991 { 2951 {
1992#if EV_VERIFY >= 2 2952#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 2953 ev_verify (EV_A);
1994#endif 2954#endif
1995 2955
1996#ifndef _WIN32 2956#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 2957 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 2958 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 2966 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 2967 if (expect_false (postfork))
2008 if (forkcnt) 2968 if (forkcnt)
2009 { 2969 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2970 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 2971 EV_INVOKE_PENDING;
2012 } 2972 }
2013#endif 2973#endif
2014 2974
2975#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 2976 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 2977 if (expect_false (preparecnt))
2017 { 2978 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2979 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 2980 EV_INVOKE_PENDING;
2020 } 2981 }
2982#endif
2983
2984 if (expect_false (loop_done))
2985 break;
2021 2986
2022 /* we might have forked, so reify kernel state if necessary */ 2987 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 2988 if (expect_false (postfork))
2024 loop_fork (EV_A); 2989 loop_fork (EV_A);
2025 2990
… …
2029 /* calculate blocking time */ 2994 /* calculate blocking time */
2030 { 2995 {
2031 ev_tstamp waittime = 0.; 2996 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 2997 ev_tstamp sleeptime = 0.;
2033 2998
2999 /* remember old timestamp for io_blocktime calculation */
3000 ev_tstamp prev_mn_now = mn_now;
3001
3002 /* update time to cancel out callback processing overhead */
3003 time_update (EV_A_ 1e100);
3004
3005 /* from now on, we want a pipe-wake-up */
3006 pipe_write_wanted = 1;
3007
3008 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3009
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3010 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 3011 {
2036 /* update time to cancel out callback processing overhead */ 3012 waittime = MAX_BLOCKTIME;
2037 time_update (EV_A_ 1e100);
2038 3013
2039 if (timercnt) 3014 if (timercnt)
2040 { 3015 {
2041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3016 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2042 if (waittime > to) waittime = to; 3017 if (waittime > to) waittime = to;
2043 } 3018 }
2044 3019
2045#if EV_PERIODIC_ENABLE 3020#if EV_PERIODIC_ENABLE
2046 if (periodiccnt) 3021 if (periodiccnt)
2047 { 3022 {
2048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3023 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2049 if (waittime > to) waittime = to; 3024 if (waittime > to) waittime = to;
2050 } 3025 }
2051#endif 3026#endif
2052 3027
3028 /* don't let timeouts decrease the waittime below timeout_blocktime */
2053 if (expect_false (waittime < timeout_blocktime)) 3029 if (expect_false (waittime < timeout_blocktime))
2054 waittime = timeout_blocktime; 3030 waittime = timeout_blocktime;
2055 3031
2056 sleeptime = waittime - backend_fudge; 3032 /* at this point, we NEED to wait, so we have to ensure */
3033 /* to pass a minimum nonzero value to the backend */
3034 if (expect_false (waittime < backend_mintime))
3035 waittime = backend_mintime;
2057 3036
3037 /* extra check because io_blocktime is commonly 0 */
2058 if (expect_true (sleeptime > io_blocktime)) 3038 if (expect_false (io_blocktime))
2059 sleeptime = io_blocktime;
2060
2061 if (sleeptime)
2062 { 3039 {
3040 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3041
3042 if (sleeptime > waittime - backend_mintime)
3043 sleeptime = waittime - backend_mintime;
3044
3045 if (expect_true (sleeptime > 0.))
3046 {
2063 ev_sleep (sleeptime); 3047 ev_sleep (sleeptime);
2064 waittime -= sleeptime; 3048 waittime -= sleeptime;
3049 }
2065 } 3050 }
2066 } 3051 }
2067 3052
3053#if EV_FEATURE_API
2068 ++loop_count; 3054 ++loop_count;
3055#endif
3056 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2069 backend_poll (EV_A_ waittime); 3057 backend_poll (EV_A_ waittime);
3058 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3059
3060 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3061
3062 if (pipe_write_skipped)
3063 {
3064 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3065 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3066 }
3067
2070 3068
2071 /* update ev_rt_now, do magic */ 3069 /* update ev_rt_now, do magic */
2072 time_update (EV_A_ waittime + sleeptime); 3070 time_update (EV_A_ waittime + sleeptime);
2073 } 3071 }
2074 3072
… …
2081#if EV_IDLE_ENABLE 3079#if EV_IDLE_ENABLE
2082 /* queue idle watchers unless other events are pending */ 3080 /* queue idle watchers unless other events are pending */
2083 idle_reify (EV_A); 3081 idle_reify (EV_A);
2084#endif 3082#endif
2085 3083
3084#if EV_CHECK_ENABLE
2086 /* queue check watchers, to be executed first */ 3085 /* queue check watchers, to be executed first */
2087 if (expect_false (checkcnt)) 3086 if (expect_false (checkcnt))
2088 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3087 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3088#endif
2089 3089
2090 call_pending (EV_A); 3090 EV_INVOKE_PENDING;
2091 } 3091 }
2092 while (expect_true ( 3092 while (expect_true (
2093 activecnt 3093 activecnt
2094 && !loop_done 3094 && !loop_done
2095 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3095 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2096 )); 3096 ));
2097 3097
2098 if (loop_done == EVUNLOOP_ONE) 3098 if (loop_done == EVBREAK_ONE)
2099 loop_done = EVUNLOOP_CANCEL; 3099 loop_done = EVBREAK_CANCEL;
3100
3101#if EV_FEATURE_API
3102 --loop_depth;
3103#endif
3104
3105 return activecnt;
2100} 3106}
2101 3107
2102void 3108void
2103ev_unloop (EV_P_ int how) 3109ev_break (EV_P_ int how) EV_THROW
2104{ 3110{
2105 loop_done = how; 3111 loop_done = how;
2106} 3112}
2107 3113
2108void 3114void
2109ev_ref (EV_P) 3115ev_ref (EV_P) EV_THROW
2110{ 3116{
2111 ++activecnt; 3117 ++activecnt;
2112} 3118}
2113 3119
2114void 3120void
2115ev_unref (EV_P) 3121ev_unref (EV_P) EV_THROW
2116{ 3122{
2117 --activecnt; 3123 --activecnt;
2118} 3124}
2119 3125
2120void 3126void
2121ev_now_update (EV_P) 3127ev_now_update (EV_P) EV_THROW
2122{ 3128{
2123 time_update (EV_A_ 1e100); 3129 time_update (EV_A_ 1e100);
2124} 3130}
2125 3131
2126void 3132void
2127ev_suspend (EV_P) 3133ev_suspend (EV_P) EV_THROW
2128{ 3134{
2129 ev_now_update (EV_A); 3135 ev_now_update (EV_A);
2130} 3136}
2131 3137
2132void 3138void
2133ev_resume (EV_P) 3139ev_resume (EV_P) EV_THROW
2134{ 3140{
2135 ev_tstamp mn_prev = mn_now; 3141 ev_tstamp mn_prev = mn_now;
2136 3142
2137 ev_now_update (EV_A); 3143 ev_now_update (EV_A);
2138 timers_reschedule (EV_A_ mn_now - mn_prev); 3144 timers_reschedule (EV_A_ mn_now - mn_prev);
2139#if EV_PERIODIC_ENABLE 3145#if EV_PERIODIC_ENABLE
3146 /* TODO: really do this? */
2140 periodics_reschedule (EV_A); 3147 periodics_reschedule (EV_A);
2141#endif 3148#endif
2142} 3149}
2143 3150
2144/*****************************************************************************/ 3151/*****************************************************************************/
3152/* singly-linked list management, used when the expected list length is short */
2145 3153
2146inline_size void 3154inline_size void
2147wlist_add (WL *head, WL elem) 3155wlist_add (WL *head, WL elem)
2148{ 3156{
2149 elem->next = *head; 3157 elem->next = *head;
… …
2153inline_size void 3161inline_size void
2154wlist_del (WL *head, WL elem) 3162wlist_del (WL *head, WL elem)
2155{ 3163{
2156 while (*head) 3164 while (*head)
2157 { 3165 {
2158 if (*head == elem) 3166 if (expect_true (*head == elem))
2159 { 3167 {
2160 *head = elem->next; 3168 *head = elem->next;
2161 return; 3169 break;
2162 } 3170 }
2163 3171
2164 head = &(*head)->next; 3172 head = &(*head)->next;
2165 } 3173 }
2166} 3174}
2167 3175
3176/* internal, faster, version of ev_clear_pending */
2168inline_speed void 3177inline_speed void
2169clear_pending (EV_P_ W w) 3178clear_pending (EV_P_ W w)
2170{ 3179{
2171 if (w->pending) 3180 if (w->pending)
2172 { 3181 {
2173 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3182 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2174 w->pending = 0; 3183 w->pending = 0;
2175 } 3184 }
2176} 3185}
2177 3186
2178int 3187int
2179ev_clear_pending (EV_P_ void *w) 3188ev_clear_pending (EV_P_ void *w) EV_THROW
2180{ 3189{
2181 W w_ = (W)w; 3190 W w_ = (W)w;
2182 int pending = w_->pending; 3191 int pending = w_->pending;
2183 3192
2184 if (expect_true (pending)) 3193 if (expect_true (pending))
2185 { 3194 {
2186 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3195 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3196 p->w = (W)&pending_w;
2187 w_->pending = 0; 3197 w_->pending = 0;
2188 p->w = 0;
2189 return p->events; 3198 return p->events;
2190 } 3199 }
2191 else 3200 else
2192 return 0; 3201 return 0;
2193} 3202}
2194 3203
2195inline_size void 3204inline_size void
2196pri_adjust (EV_P_ W w) 3205pri_adjust (EV_P_ W w)
2197{ 3206{
2198 int pri = w->priority; 3207 int pri = ev_priority (w);
2199 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3208 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2200 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3209 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2201 w->priority = pri; 3210 ev_set_priority (w, pri);
2202} 3211}
2203 3212
2204inline_speed void 3213inline_speed void
2205ev_start (EV_P_ W w, int active) 3214ev_start (EV_P_ W w, int active)
2206{ 3215{
… …
2217} 3226}
2218 3227
2219/*****************************************************************************/ 3228/*****************************************************************************/
2220 3229
2221void noinline 3230void noinline
2222ev_io_start (EV_P_ ev_io *w) 3231ev_io_start (EV_P_ ev_io *w) EV_THROW
2223{ 3232{
2224 int fd = w->fd; 3233 int fd = w->fd;
2225 3234
2226 if (expect_false (ev_is_active (w))) 3235 if (expect_false (ev_is_active (w)))
2227 return; 3236 return;
2228 3237
2229 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3238 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2230 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3239 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2231 3240
2232 EV_FREQUENT_CHECK; 3241 EV_FREQUENT_CHECK;
2233 3242
2234 ev_start (EV_A_ (W)w, 1); 3243 ev_start (EV_A_ (W)w, 1);
2235 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3244 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2236 wlist_add (&anfds[fd].head, (WL)w); 3245 wlist_add (&anfds[fd].head, (WL)w);
2237 3246
2238 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3247 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2239 w->events &= ~EV__IOFDSET; 3248 w->events &= ~EV__IOFDSET;
2240 3249
2241 EV_FREQUENT_CHECK; 3250 EV_FREQUENT_CHECK;
2242} 3251}
2243 3252
2244void noinline 3253void noinline
2245ev_io_stop (EV_P_ ev_io *w) 3254ev_io_stop (EV_P_ ev_io *w) EV_THROW
2246{ 3255{
2247 clear_pending (EV_A_ (W)w); 3256 clear_pending (EV_A_ (W)w);
2248 if (expect_false (!ev_is_active (w))) 3257 if (expect_false (!ev_is_active (w)))
2249 return; 3258 return;
2250 3259
… …
2253 EV_FREQUENT_CHECK; 3262 EV_FREQUENT_CHECK;
2254 3263
2255 wlist_del (&anfds[w->fd].head, (WL)w); 3264 wlist_del (&anfds[w->fd].head, (WL)w);
2256 ev_stop (EV_A_ (W)w); 3265 ev_stop (EV_A_ (W)w);
2257 3266
2258 fd_change (EV_A_ w->fd, 1); 3267 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2259 3268
2260 EV_FREQUENT_CHECK; 3269 EV_FREQUENT_CHECK;
2261} 3270}
2262 3271
2263void noinline 3272void noinline
2264ev_timer_start (EV_P_ ev_timer *w) 3273ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2265{ 3274{
2266 if (expect_false (ev_is_active (w))) 3275 if (expect_false (ev_is_active (w)))
2267 return; 3276 return;
2268 3277
2269 ev_at (w) += mn_now; 3278 ev_at (w) += mn_now;
… …
2283 3292
2284 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3293 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2285} 3294}
2286 3295
2287void noinline 3296void noinline
2288ev_timer_stop (EV_P_ ev_timer *w) 3297ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2289{ 3298{
2290 clear_pending (EV_A_ (W)w); 3299 clear_pending (EV_A_ (W)w);
2291 if (expect_false (!ev_is_active (w))) 3300 if (expect_false (!ev_is_active (w)))
2292 return; 3301 return;
2293 3302
… …
2305 timers [active] = timers [timercnt + HEAP0]; 3314 timers [active] = timers [timercnt + HEAP0];
2306 adjustheap (timers, timercnt, active); 3315 adjustheap (timers, timercnt, active);
2307 } 3316 }
2308 } 3317 }
2309 3318
2310 EV_FREQUENT_CHECK;
2311
2312 ev_at (w) -= mn_now; 3319 ev_at (w) -= mn_now;
2313 3320
2314 ev_stop (EV_A_ (W)w); 3321 ev_stop (EV_A_ (W)w);
3322
3323 EV_FREQUENT_CHECK;
2315} 3324}
2316 3325
2317void noinline 3326void noinline
2318ev_timer_again (EV_P_ ev_timer *w) 3327ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2319{ 3328{
2320 EV_FREQUENT_CHECK; 3329 EV_FREQUENT_CHECK;
3330
3331 clear_pending (EV_A_ (W)w);
2321 3332
2322 if (ev_is_active (w)) 3333 if (ev_is_active (w))
2323 { 3334 {
2324 if (w->repeat) 3335 if (w->repeat)
2325 { 3336 {
… …
2337 } 3348 }
2338 3349
2339 EV_FREQUENT_CHECK; 3350 EV_FREQUENT_CHECK;
2340} 3351}
2341 3352
3353ev_tstamp
3354ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3355{
3356 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3357}
3358
2342#if EV_PERIODIC_ENABLE 3359#if EV_PERIODIC_ENABLE
2343void noinline 3360void noinline
2344ev_periodic_start (EV_P_ ev_periodic *w) 3361ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2345{ 3362{
2346 if (expect_false (ev_is_active (w))) 3363 if (expect_false (ev_is_active (w)))
2347 return; 3364 return;
2348 3365
2349 if (w->reschedule_cb) 3366 if (w->reschedule_cb)
2350 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3367 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2351 else if (w->interval) 3368 else if (w->interval)
2352 { 3369 {
2353 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3370 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2354 /* this formula differs from the one in periodic_reify because we do not always round up */ 3371 periodic_recalc (EV_A_ w);
2355 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2356 } 3372 }
2357 else 3373 else
2358 ev_at (w) = w->offset; 3374 ev_at (w) = w->offset;
2359 3375
2360 EV_FREQUENT_CHECK; 3376 EV_FREQUENT_CHECK;
… …
2370 3386
2371 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3387 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2372} 3388}
2373 3389
2374void noinline 3390void noinline
2375ev_periodic_stop (EV_P_ ev_periodic *w) 3391ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2376{ 3392{
2377 clear_pending (EV_A_ (W)w); 3393 clear_pending (EV_A_ (W)w);
2378 if (expect_false (!ev_is_active (w))) 3394 if (expect_false (!ev_is_active (w)))
2379 return; 3395 return;
2380 3396
… …
2392 periodics [active] = periodics [periodiccnt + HEAP0]; 3408 periodics [active] = periodics [periodiccnt + HEAP0];
2393 adjustheap (periodics, periodiccnt, active); 3409 adjustheap (periodics, periodiccnt, active);
2394 } 3410 }
2395 } 3411 }
2396 3412
2397 EV_FREQUENT_CHECK;
2398
2399 ev_stop (EV_A_ (W)w); 3413 ev_stop (EV_A_ (W)w);
3414
3415 EV_FREQUENT_CHECK;
2400} 3416}
2401 3417
2402void noinline 3418void noinline
2403ev_periodic_again (EV_P_ ev_periodic *w) 3419ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2404{ 3420{
2405 /* TODO: use adjustheap and recalculation */ 3421 /* TODO: use adjustheap and recalculation */
2406 ev_periodic_stop (EV_A_ w); 3422 ev_periodic_stop (EV_A_ w);
2407 ev_periodic_start (EV_A_ w); 3423 ev_periodic_start (EV_A_ w);
2408} 3424}
… …
2410 3426
2411#ifndef SA_RESTART 3427#ifndef SA_RESTART
2412# define SA_RESTART 0 3428# define SA_RESTART 0
2413#endif 3429#endif
2414 3430
3431#if EV_SIGNAL_ENABLE
3432
2415void noinline 3433void noinline
2416ev_signal_start (EV_P_ ev_signal *w) 3434ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2417{ 3435{
2418#if EV_MULTIPLICITY
2419 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2420#endif
2421 if (expect_false (ev_is_active (w))) 3436 if (expect_false (ev_is_active (w)))
2422 return; 3437 return;
2423 3438
2424 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3439 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2425 3440
2426 evpipe_init (EV_A); 3441#if EV_MULTIPLICITY
3442 assert (("libev: a signal must not be attached to two different loops",
3443 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2427 3444
2428 EV_FREQUENT_CHECK; 3445 signals [w->signum - 1].loop = EV_A;
3446#endif
2429 3447
3448 EV_FREQUENT_CHECK;
3449
3450#if EV_USE_SIGNALFD
3451 if (sigfd == -2)
2430 { 3452 {
2431#ifndef _WIN32 3453 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2432 sigset_t full, prev; 3454 if (sigfd < 0 && errno == EINVAL)
2433 sigfillset (&full); 3455 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2434 sigprocmask (SIG_SETMASK, &full, &prev);
2435#endif
2436 3456
2437 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3457 if (sigfd >= 0)
3458 {
3459 fd_intern (sigfd); /* doing it twice will not hurt */
2438 3460
2439#ifndef _WIN32 3461 sigemptyset (&sigfd_set);
2440 sigprocmask (SIG_SETMASK, &prev, 0); 3462
2441#endif 3463 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3464 ev_set_priority (&sigfd_w, EV_MAXPRI);
3465 ev_io_start (EV_A_ &sigfd_w);
3466 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3467 }
2442 } 3468 }
3469
3470 if (sigfd >= 0)
3471 {
3472 /* TODO: check .head */
3473 sigaddset (&sigfd_set, w->signum);
3474 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3475
3476 signalfd (sigfd, &sigfd_set, 0);
3477 }
3478#endif
2443 3479
2444 ev_start (EV_A_ (W)w, 1); 3480 ev_start (EV_A_ (W)w, 1);
2445 wlist_add (&signals [w->signum - 1].head, (WL)w); 3481 wlist_add (&signals [w->signum - 1].head, (WL)w);
2446 3482
2447 if (!((WL)w)->next) 3483 if (!((WL)w)->next)
3484# if EV_USE_SIGNALFD
3485 if (sigfd < 0) /*TODO*/
3486# endif
2448 { 3487 {
2449#if _WIN32 3488# ifdef _WIN32
3489 evpipe_init (EV_A);
3490
2450 signal (w->signum, ev_sighandler); 3491 signal (w->signum, ev_sighandler);
2451#else 3492# else
2452 struct sigaction sa; 3493 struct sigaction sa;
3494
3495 evpipe_init (EV_A);
3496
2453 sa.sa_handler = ev_sighandler; 3497 sa.sa_handler = ev_sighandler;
2454 sigfillset (&sa.sa_mask); 3498 sigfillset (&sa.sa_mask);
2455 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3499 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2456 sigaction (w->signum, &sa, 0); 3500 sigaction (w->signum, &sa, 0);
3501
3502 if (origflags & EVFLAG_NOSIGMASK)
3503 {
3504 sigemptyset (&sa.sa_mask);
3505 sigaddset (&sa.sa_mask, w->signum);
3506 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3507 }
2457#endif 3508#endif
2458 } 3509 }
2459 3510
2460 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2461} 3512}
2462 3513
2463void noinline 3514void noinline
2464ev_signal_stop (EV_P_ ev_signal *w) 3515ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2465{ 3516{
2466 clear_pending (EV_A_ (W)w); 3517 clear_pending (EV_A_ (W)w);
2467 if (expect_false (!ev_is_active (w))) 3518 if (expect_false (!ev_is_active (w)))
2468 return; 3519 return;
2469 3520
… …
2471 3522
2472 wlist_del (&signals [w->signum - 1].head, (WL)w); 3523 wlist_del (&signals [w->signum - 1].head, (WL)w);
2473 ev_stop (EV_A_ (W)w); 3524 ev_stop (EV_A_ (W)w);
2474 3525
2475 if (!signals [w->signum - 1].head) 3526 if (!signals [w->signum - 1].head)
3527 {
3528#if EV_MULTIPLICITY
3529 signals [w->signum - 1].loop = 0; /* unattach from signal */
3530#endif
3531#if EV_USE_SIGNALFD
3532 if (sigfd >= 0)
3533 {
3534 sigset_t ss;
3535
3536 sigemptyset (&ss);
3537 sigaddset (&ss, w->signum);
3538 sigdelset (&sigfd_set, w->signum);
3539
3540 signalfd (sigfd, &sigfd_set, 0);
3541 sigprocmask (SIG_UNBLOCK, &ss, 0);
3542 }
3543 else
3544#endif
2476 signal (w->signum, SIG_DFL); 3545 signal (w->signum, SIG_DFL);
3546 }
2477 3547
2478 EV_FREQUENT_CHECK; 3548 EV_FREQUENT_CHECK;
2479} 3549}
3550
3551#endif
3552
3553#if EV_CHILD_ENABLE
2480 3554
2481void 3555void
2482ev_child_start (EV_P_ ev_child *w) 3556ev_child_start (EV_P_ ev_child *w) EV_THROW
2483{ 3557{
2484#if EV_MULTIPLICITY 3558#if EV_MULTIPLICITY
2485 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3559 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2486#endif 3560#endif
2487 if (expect_false (ev_is_active (w))) 3561 if (expect_false (ev_is_active (w)))
2488 return; 3562 return;
2489 3563
2490 EV_FREQUENT_CHECK; 3564 EV_FREQUENT_CHECK;
2491 3565
2492 ev_start (EV_A_ (W)w, 1); 3566 ev_start (EV_A_ (W)w, 1);
2493 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3567 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2494 3568
2495 EV_FREQUENT_CHECK; 3569 EV_FREQUENT_CHECK;
2496} 3570}
2497 3571
2498void 3572void
2499ev_child_stop (EV_P_ ev_child *w) 3573ev_child_stop (EV_P_ ev_child *w) EV_THROW
2500{ 3574{
2501 clear_pending (EV_A_ (W)w); 3575 clear_pending (EV_A_ (W)w);
2502 if (expect_false (!ev_is_active (w))) 3576 if (expect_false (!ev_is_active (w)))
2503 return; 3577 return;
2504 3578
2505 EV_FREQUENT_CHECK; 3579 EV_FREQUENT_CHECK;
2506 3580
2507 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3581 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2508 ev_stop (EV_A_ (W)w); 3582 ev_stop (EV_A_ (W)w);
2509 3583
2510 EV_FREQUENT_CHECK; 3584 EV_FREQUENT_CHECK;
2511} 3585}
3586
3587#endif
2512 3588
2513#if EV_STAT_ENABLE 3589#if EV_STAT_ENABLE
2514 3590
2515# ifdef _WIN32 3591# ifdef _WIN32
2516# undef lstat 3592# undef lstat
… …
2522#define MIN_STAT_INTERVAL 0.1074891 3598#define MIN_STAT_INTERVAL 0.1074891
2523 3599
2524static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3600static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2525 3601
2526#if EV_USE_INOTIFY 3602#if EV_USE_INOTIFY
2527# define EV_INOTIFY_BUFSIZE 8192 3603
3604/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3605# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2528 3606
2529static void noinline 3607static void noinline
2530infy_add (EV_P_ ev_stat *w) 3608infy_add (EV_P_ ev_stat *w)
2531{ 3609{
2532 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3610 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2533 3611
2534 if (w->wd < 0) 3612 if (w->wd >= 0)
3613 {
3614 struct statfs sfs;
3615
3616 /* now local changes will be tracked by inotify, but remote changes won't */
3617 /* unless the filesystem is known to be local, we therefore still poll */
3618 /* also do poll on <2.6.25, but with normal frequency */
3619
3620 if (!fs_2625)
3621 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3622 else if (!statfs (w->path, &sfs)
3623 && (sfs.f_type == 0x1373 /* devfs */
3624 || sfs.f_type == 0xEF53 /* ext2/3 */
3625 || sfs.f_type == 0x3153464a /* jfs */
3626 || sfs.f_type == 0x52654973 /* reiser3 */
3627 || sfs.f_type == 0x01021994 /* tempfs */
3628 || sfs.f_type == 0x58465342 /* xfs */))
3629 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3630 else
3631 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2535 { 3632 }
3633 else
3634 {
3635 /* can't use inotify, continue to stat */
2536 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3636 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2537 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2538 3637
2539 /* monitor some parent directory for speedup hints */ 3638 /* if path is not there, monitor some parent directory for speedup hints */
2540 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3639 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2541 /* but an efficiency issue only */ 3640 /* but an efficiency issue only */
2542 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3641 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2543 { 3642 {
2544 char path [4096]; 3643 char path [4096];
… …
2554 if (!pend || pend == path) 3653 if (!pend || pend == path)
2555 break; 3654 break;
2556 3655
2557 *pend = 0; 3656 *pend = 0;
2558 w->wd = inotify_add_watch (fs_fd, path, mask); 3657 w->wd = inotify_add_watch (fs_fd, path, mask);
2559 } 3658 }
2560 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3659 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2561 } 3660 }
2562 } 3661 }
2563 3662
2564 if (w->wd >= 0) 3663 if (w->wd >= 0)
2565 {
2566 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3664 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2567 3665
2568 /* now local changes will be tracked by inotify, but remote changes won't */ 3666 /* now re-arm timer, if required */
2569 /* unless the filesystem it known to be local, we therefore still poll */ 3667 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2570 /* also do poll on <2.6.25, but with normal frequency */
2571 struct statfs sfs;
2572
2573 if (fs_2625 && !statfs (w->path, &sfs))
2574 if (sfs.f_type == 0x1373 /* devfs */
2575 || sfs.f_type == 0xEF53 /* ext2/3 */
2576 || sfs.f_type == 0x3153464a /* jfs */
2577 || sfs.f_type == 0x52654973 /* reiser3 */
2578 || sfs.f_type == 0x01021994 /* tempfs */
2579 || sfs.f_type == 0x58465342 /* xfs */)
2580 return;
2581
2582 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2583 ev_timer_again (EV_A_ &w->timer); 3668 ev_timer_again (EV_A_ &w->timer);
2584 } 3669 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2585} 3670}
2586 3671
2587static void noinline 3672static void noinline
2588infy_del (EV_P_ ev_stat *w) 3673infy_del (EV_P_ ev_stat *w)
2589{ 3674{
… …
2592 3677
2593 if (wd < 0) 3678 if (wd < 0)
2594 return; 3679 return;
2595 3680
2596 w->wd = -2; 3681 w->wd = -2;
2597 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3682 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2598 wlist_del (&fs_hash [slot].head, (WL)w); 3683 wlist_del (&fs_hash [slot].head, (WL)w);
2599 3684
2600 /* remove this watcher, if others are watching it, they will rearm */ 3685 /* remove this watcher, if others are watching it, they will rearm */
2601 inotify_rm_watch (fs_fd, wd); 3686 inotify_rm_watch (fs_fd, wd);
2602} 3687}
… …
2604static void noinline 3689static void noinline
2605infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3690infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2606{ 3691{
2607 if (slot < 0) 3692 if (slot < 0)
2608 /* overflow, need to check for all hash slots */ 3693 /* overflow, need to check for all hash slots */
2609 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3694 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2610 infy_wd (EV_A_ slot, wd, ev); 3695 infy_wd (EV_A_ slot, wd, ev);
2611 else 3696 else
2612 { 3697 {
2613 WL w_; 3698 WL w_;
2614 3699
2615 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3700 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2616 { 3701 {
2617 ev_stat *w = (ev_stat *)w_; 3702 ev_stat *w = (ev_stat *)w_;
2618 w_ = w_->next; /* lets us remove this watcher and all before it */ 3703 w_ = w_->next; /* lets us remove this watcher and all before it */
2619 3704
2620 if (w->wd == wd || wd == -1) 3705 if (w->wd == wd || wd == -1)
2621 { 3706 {
2622 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3707 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2623 { 3708 {
2624 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3709 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2625 w->wd = -1; 3710 w->wd = -1;
2626 infy_add (EV_A_ w); /* re-add, no matter what */ 3711 infy_add (EV_A_ w); /* re-add, no matter what */
2627 } 3712 }
2628 3713
2629 stat_timer_cb (EV_A_ &w->timer, 0); 3714 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2634 3719
2635static void 3720static void
2636infy_cb (EV_P_ ev_io *w, int revents) 3721infy_cb (EV_P_ ev_io *w, int revents)
2637{ 3722{
2638 char buf [EV_INOTIFY_BUFSIZE]; 3723 char buf [EV_INOTIFY_BUFSIZE];
2639 struct inotify_event *ev = (struct inotify_event *)buf;
2640 int ofs; 3724 int ofs;
2641 int len = read (fs_fd, buf, sizeof (buf)); 3725 int len = read (fs_fd, buf, sizeof (buf));
2642 3726
2643 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3727 for (ofs = 0; ofs < len; )
3728 {
3729 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2644 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3730 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3731 ofs += sizeof (struct inotify_event) + ev->len;
3732 }
2645} 3733}
2646 3734
2647inline_size void 3735inline_size void ecb_cold
2648check_2625 (EV_P) 3736ev_check_2625 (EV_P)
2649{ 3737{
2650 /* kernels < 2.6.25 are borked 3738 /* kernels < 2.6.25 are borked
2651 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3739 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2652 */ 3740 */
2653 struct utsname buf; 3741 if (ev_linux_version () < 0x020619)
2654 int major, minor, micro;
2655
2656 if (uname (&buf))
2657 return; 3742 return;
2658 3743
2659 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2660 return;
2661
2662 if (major < 2
2663 || (major == 2 && minor < 6)
2664 || (major == 2 && minor == 6 && micro < 25))
2665 return;
2666
2667 fs_2625 = 1; 3744 fs_2625 = 1;
3745}
3746
3747inline_size int
3748infy_newfd (void)
3749{
3750#if defined IN_CLOEXEC && defined IN_NONBLOCK
3751 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3752 if (fd >= 0)
3753 return fd;
3754#endif
3755 return inotify_init ();
2668} 3756}
2669 3757
2670inline_size void 3758inline_size void
2671infy_init (EV_P) 3759infy_init (EV_P)
2672{ 3760{
2673 if (fs_fd != -2) 3761 if (fs_fd != -2)
2674 return; 3762 return;
2675 3763
2676 fs_fd = -1; 3764 fs_fd = -1;
2677 3765
2678 check_2625 (EV_A); 3766 ev_check_2625 (EV_A);
2679 3767
2680 fs_fd = inotify_init (); 3768 fs_fd = infy_newfd ();
2681 3769
2682 if (fs_fd >= 0) 3770 if (fs_fd >= 0)
2683 { 3771 {
3772 fd_intern (fs_fd);
2684 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3773 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2685 ev_set_priority (&fs_w, EV_MAXPRI); 3774 ev_set_priority (&fs_w, EV_MAXPRI);
2686 ev_io_start (EV_A_ &fs_w); 3775 ev_io_start (EV_A_ &fs_w);
3776 ev_unref (EV_A);
2687 } 3777 }
2688} 3778}
2689 3779
2690inline_size void 3780inline_size void
2691infy_fork (EV_P) 3781infy_fork (EV_P)
… …
2693 int slot; 3783 int slot;
2694 3784
2695 if (fs_fd < 0) 3785 if (fs_fd < 0)
2696 return; 3786 return;
2697 3787
3788 ev_ref (EV_A);
3789 ev_io_stop (EV_A_ &fs_w);
2698 close (fs_fd); 3790 close (fs_fd);
2699 fs_fd = inotify_init (); 3791 fs_fd = infy_newfd ();
2700 3792
3793 if (fs_fd >= 0)
3794 {
3795 fd_intern (fs_fd);
3796 ev_io_set (&fs_w, fs_fd, EV_READ);
3797 ev_io_start (EV_A_ &fs_w);
3798 ev_unref (EV_A);
3799 }
3800
2701 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3801 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2702 { 3802 {
2703 WL w_ = fs_hash [slot].head; 3803 WL w_ = fs_hash [slot].head;
2704 fs_hash [slot].head = 0; 3804 fs_hash [slot].head = 0;
2705 3805
2706 while (w_) 3806 while (w_)
… …
2711 w->wd = -1; 3811 w->wd = -1;
2712 3812
2713 if (fs_fd >= 0) 3813 if (fs_fd >= 0)
2714 infy_add (EV_A_ w); /* re-add, no matter what */ 3814 infy_add (EV_A_ w); /* re-add, no matter what */
2715 else 3815 else
3816 {
3817 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3818 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2716 ev_timer_again (EV_A_ &w->timer); 3819 ev_timer_again (EV_A_ &w->timer);
3820 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3821 }
2717 } 3822 }
2718 } 3823 }
2719} 3824}
2720 3825
2721#endif 3826#endif
… …
2725#else 3830#else
2726# define EV_LSTAT(p,b) lstat (p, b) 3831# define EV_LSTAT(p,b) lstat (p, b)
2727#endif 3832#endif
2728 3833
2729void 3834void
2730ev_stat_stat (EV_P_ ev_stat *w) 3835ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2731{ 3836{
2732 if (lstat (w->path, &w->attr) < 0) 3837 if (lstat (w->path, &w->attr) < 0)
2733 w->attr.st_nlink = 0; 3838 w->attr.st_nlink = 0;
2734 else if (!w->attr.st_nlink) 3839 else if (!w->attr.st_nlink)
2735 w->attr.st_nlink = 1; 3840 w->attr.st_nlink = 1;
… …
2738static void noinline 3843static void noinline
2739stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3844stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2740{ 3845{
2741 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3846 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2742 3847
2743 /* we copy this here each the time so that */ 3848 ev_statdata prev = w->attr;
2744 /* prev has the old value when the callback gets invoked */
2745 w->prev = w->attr;
2746 ev_stat_stat (EV_A_ w); 3849 ev_stat_stat (EV_A_ w);
2747 3850
2748 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3851 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2749 if ( 3852 if (
2750 w->prev.st_dev != w->attr.st_dev 3853 prev.st_dev != w->attr.st_dev
2751 || w->prev.st_ino != w->attr.st_ino 3854 || prev.st_ino != w->attr.st_ino
2752 || w->prev.st_mode != w->attr.st_mode 3855 || prev.st_mode != w->attr.st_mode
2753 || w->prev.st_nlink != w->attr.st_nlink 3856 || prev.st_nlink != w->attr.st_nlink
2754 || w->prev.st_uid != w->attr.st_uid 3857 || prev.st_uid != w->attr.st_uid
2755 || w->prev.st_gid != w->attr.st_gid 3858 || prev.st_gid != w->attr.st_gid
2756 || w->prev.st_rdev != w->attr.st_rdev 3859 || prev.st_rdev != w->attr.st_rdev
2757 || w->prev.st_size != w->attr.st_size 3860 || prev.st_size != w->attr.st_size
2758 || w->prev.st_atime != w->attr.st_atime 3861 || prev.st_atime != w->attr.st_atime
2759 || w->prev.st_mtime != w->attr.st_mtime 3862 || prev.st_mtime != w->attr.st_mtime
2760 || w->prev.st_ctime != w->attr.st_ctime 3863 || prev.st_ctime != w->attr.st_ctime
2761 ) { 3864 ) {
3865 /* we only update w->prev on actual differences */
3866 /* in case we test more often than invoke the callback, */
3867 /* to ensure that prev is always different to attr */
3868 w->prev = prev;
3869
2762 #if EV_USE_INOTIFY 3870 #if EV_USE_INOTIFY
2763 if (fs_fd >= 0) 3871 if (fs_fd >= 0)
2764 { 3872 {
2765 infy_del (EV_A_ w); 3873 infy_del (EV_A_ w);
2766 infy_add (EV_A_ w); 3874 infy_add (EV_A_ w);
… …
2771 ev_feed_event (EV_A_ w, EV_STAT); 3879 ev_feed_event (EV_A_ w, EV_STAT);
2772 } 3880 }
2773} 3881}
2774 3882
2775void 3883void
2776ev_stat_start (EV_P_ ev_stat *w) 3884ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2777{ 3885{
2778 if (expect_false (ev_is_active (w))) 3886 if (expect_false (ev_is_active (w)))
2779 return; 3887 return;
2780 3888
2781 ev_stat_stat (EV_A_ w); 3889 ev_stat_stat (EV_A_ w);
… …
2791 3899
2792 if (fs_fd >= 0) 3900 if (fs_fd >= 0)
2793 infy_add (EV_A_ w); 3901 infy_add (EV_A_ w);
2794 else 3902 else
2795#endif 3903#endif
3904 {
2796 ev_timer_again (EV_A_ &w->timer); 3905 ev_timer_again (EV_A_ &w->timer);
3906 ev_unref (EV_A);
3907 }
2797 3908
2798 ev_start (EV_A_ (W)w, 1); 3909 ev_start (EV_A_ (W)w, 1);
2799 3910
2800 EV_FREQUENT_CHECK; 3911 EV_FREQUENT_CHECK;
2801} 3912}
2802 3913
2803void 3914void
2804ev_stat_stop (EV_P_ ev_stat *w) 3915ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2805{ 3916{
2806 clear_pending (EV_A_ (W)w); 3917 clear_pending (EV_A_ (W)w);
2807 if (expect_false (!ev_is_active (w))) 3918 if (expect_false (!ev_is_active (w)))
2808 return; 3919 return;
2809 3920
2810 EV_FREQUENT_CHECK; 3921 EV_FREQUENT_CHECK;
2811 3922
2812#if EV_USE_INOTIFY 3923#if EV_USE_INOTIFY
2813 infy_del (EV_A_ w); 3924 infy_del (EV_A_ w);
2814#endif 3925#endif
3926
3927 if (ev_is_active (&w->timer))
3928 {
3929 ev_ref (EV_A);
2815 ev_timer_stop (EV_A_ &w->timer); 3930 ev_timer_stop (EV_A_ &w->timer);
3931 }
2816 3932
2817 ev_stop (EV_A_ (W)w); 3933 ev_stop (EV_A_ (W)w);
2818 3934
2819 EV_FREQUENT_CHECK; 3935 EV_FREQUENT_CHECK;
2820} 3936}
2821#endif 3937#endif
2822 3938
2823#if EV_IDLE_ENABLE 3939#if EV_IDLE_ENABLE
2824void 3940void
2825ev_idle_start (EV_P_ ev_idle *w) 3941ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2826{ 3942{
2827 if (expect_false (ev_is_active (w))) 3943 if (expect_false (ev_is_active (w)))
2828 return; 3944 return;
2829 3945
2830 pri_adjust (EV_A_ (W)w); 3946 pri_adjust (EV_A_ (W)w);
… …
2843 3959
2844 EV_FREQUENT_CHECK; 3960 EV_FREQUENT_CHECK;
2845} 3961}
2846 3962
2847void 3963void
2848ev_idle_stop (EV_P_ ev_idle *w) 3964ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2849{ 3965{
2850 clear_pending (EV_A_ (W)w); 3966 clear_pending (EV_A_ (W)w);
2851 if (expect_false (!ev_is_active (w))) 3967 if (expect_false (!ev_is_active (w)))
2852 return; 3968 return;
2853 3969
… …
2865 3981
2866 EV_FREQUENT_CHECK; 3982 EV_FREQUENT_CHECK;
2867} 3983}
2868#endif 3984#endif
2869 3985
3986#if EV_PREPARE_ENABLE
2870void 3987void
2871ev_prepare_start (EV_P_ ev_prepare *w) 3988ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2872{ 3989{
2873 if (expect_false (ev_is_active (w))) 3990 if (expect_false (ev_is_active (w)))
2874 return; 3991 return;
2875 3992
2876 EV_FREQUENT_CHECK; 3993 EV_FREQUENT_CHECK;
… …
2881 3998
2882 EV_FREQUENT_CHECK; 3999 EV_FREQUENT_CHECK;
2883} 4000}
2884 4001
2885void 4002void
2886ev_prepare_stop (EV_P_ ev_prepare *w) 4003ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2887{ 4004{
2888 clear_pending (EV_A_ (W)w); 4005 clear_pending (EV_A_ (W)w);
2889 if (expect_false (!ev_is_active (w))) 4006 if (expect_false (!ev_is_active (w)))
2890 return; 4007 return;
2891 4008
… …
2900 4017
2901 ev_stop (EV_A_ (W)w); 4018 ev_stop (EV_A_ (W)w);
2902 4019
2903 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
2904} 4021}
4022#endif
2905 4023
4024#if EV_CHECK_ENABLE
2906void 4025void
2907ev_check_start (EV_P_ ev_check *w) 4026ev_check_start (EV_P_ ev_check *w) EV_THROW
2908{ 4027{
2909 if (expect_false (ev_is_active (w))) 4028 if (expect_false (ev_is_active (w)))
2910 return; 4029 return;
2911 4030
2912 EV_FREQUENT_CHECK; 4031 EV_FREQUENT_CHECK;
… …
2917 4036
2918 EV_FREQUENT_CHECK; 4037 EV_FREQUENT_CHECK;
2919} 4038}
2920 4039
2921void 4040void
2922ev_check_stop (EV_P_ ev_check *w) 4041ev_check_stop (EV_P_ ev_check *w) EV_THROW
2923{ 4042{
2924 clear_pending (EV_A_ (W)w); 4043 clear_pending (EV_A_ (W)w);
2925 if (expect_false (!ev_is_active (w))) 4044 if (expect_false (!ev_is_active (w)))
2926 return; 4045 return;
2927 4046
… …
2936 4055
2937 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
2938 4057
2939 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
2940} 4059}
4060#endif
2941 4061
2942#if EV_EMBED_ENABLE 4062#if EV_EMBED_ENABLE
2943void noinline 4063void noinline
2944ev_embed_sweep (EV_P_ ev_embed *w) 4064ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2945{ 4065{
2946 ev_loop (w->other, EVLOOP_NONBLOCK); 4066 ev_run (w->other, EVRUN_NOWAIT);
2947} 4067}
2948 4068
2949static void 4069static void
2950embed_io_cb (EV_P_ ev_io *io, int revents) 4070embed_io_cb (EV_P_ ev_io *io, int revents)
2951{ 4071{
2952 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4072 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2953 4073
2954 if (ev_cb (w)) 4074 if (ev_cb (w))
2955 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4075 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2956 else 4076 else
2957 ev_loop (w->other, EVLOOP_NONBLOCK); 4077 ev_run (w->other, EVRUN_NOWAIT);
2958} 4078}
2959 4079
2960static void 4080static void
2961embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4081embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2962{ 4082{
2963 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4083 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2964 4084
2965 { 4085 {
2966 struct ev_loop *loop = w->other; 4086 EV_P = w->other;
2967 4087
2968 while (fdchangecnt) 4088 while (fdchangecnt)
2969 { 4089 {
2970 fd_reify (EV_A); 4090 fd_reify (EV_A);
2971 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4091 ev_run (EV_A_ EVRUN_NOWAIT);
2972 } 4092 }
2973 } 4093 }
2974} 4094}
2975 4095
2976static void 4096static void
… …
2979 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4099 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2980 4100
2981 ev_embed_stop (EV_A_ w); 4101 ev_embed_stop (EV_A_ w);
2982 4102
2983 { 4103 {
2984 struct ev_loop *loop = w->other; 4104 EV_P = w->other;
2985 4105
2986 ev_loop_fork (EV_A); 4106 ev_loop_fork (EV_A);
2987 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4107 ev_run (EV_A_ EVRUN_NOWAIT);
2988 } 4108 }
2989 4109
2990 ev_embed_start (EV_A_ w); 4110 ev_embed_start (EV_A_ w);
2991} 4111}
2992 4112
… …
2997 ev_idle_stop (EV_A_ idle); 4117 ev_idle_stop (EV_A_ idle);
2998} 4118}
2999#endif 4119#endif
3000 4120
3001void 4121void
3002ev_embed_start (EV_P_ ev_embed *w) 4122ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3003{ 4123{
3004 if (expect_false (ev_is_active (w))) 4124 if (expect_false (ev_is_active (w)))
3005 return; 4125 return;
3006 4126
3007 { 4127 {
3008 struct ev_loop *loop = w->other; 4128 EV_P = w->other;
3009 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4129 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3010 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4130 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3011 } 4131 }
3012 4132
3013 EV_FREQUENT_CHECK; 4133 EV_FREQUENT_CHECK;
… …
3028 4148
3029 EV_FREQUENT_CHECK; 4149 EV_FREQUENT_CHECK;
3030} 4150}
3031 4151
3032void 4152void
3033ev_embed_stop (EV_P_ ev_embed *w) 4153ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3034{ 4154{
3035 clear_pending (EV_A_ (W)w); 4155 clear_pending (EV_A_ (W)w);
3036 if (expect_false (!ev_is_active (w))) 4156 if (expect_false (!ev_is_active (w)))
3037 return; 4157 return;
3038 4158
… …
3040 4160
3041 ev_io_stop (EV_A_ &w->io); 4161 ev_io_stop (EV_A_ &w->io);
3042 ev_prepare_stop (EV_A_ &w->prepare); 4162 ev_prepare_stop (EV_A_ &w->prepare);
3043 ev_fork_stop (EV_A_ &w->fork); 4163 ev_fork_stop (EV_A_ &w->fork);
3044 4164
4165 ev_stop (EV_A_ (W)w);
4166
3045 EV_FREQUENT_CHECK; 4167 EV_FREQUENT_CHECK;
3046} 4168}
3047#endif 4169#endif
3048 4170
3049#if EV_FORK_ENABLE 4171#if EV_FORK_ENABLE
3050void 4172void
3051ev_fork_start (EV_P_ ev_fork *w) 4173ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3052{ 4174{
3053 if (expect_false (ev_is_active (w))) 4175 if (expect_false (ev_is_active (w)))
3054 return; 4176 return;
3055 4177
3056 EV_FREQUENT_CHECK; 4178 EV_FREQUENT_CHECK;
… …
3061 4183
3062 EV_FREQUENT_CHECK; 4184 EV_FREQUENT_CHECK;
3063} 4185}
3064 4186
3065void 4187void
3066ev_fork_stop (EV_P_ ev_fork *w) 4188ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3067{ 4189{
3068 clear_pending (EV_A_ (W)w); 4190 clear_pending (EV_A_ (W)w);
3069 if (expect_false (!ev_is_active (w))) 4191 if (expect_false (!ev_is_active (w)))
3070 return; 4192 return;
3071 4193
… …
3082 4204
3083 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
3084} 4206}
3085#endif 4207#endif
3086 4208
4209#if EV_CLEANUP_ENABLE
4210void
4211ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4212{
4213 if (expect_false (ev_is_active (w)))
4214 return;
4215
4216 EV_FREQUENT_CHECK;
4217
4218 ev_start (EV_A_ (W)w, ++cleanupcnt);
4219 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4220 cleanups [cleanupcnt - 1] = w;
4221
4222 /* cleanup watchers should never keep a refcount on the loop */
4223 ev_unref (EV_A);
4224 EV_FREQUENT_CHECK;
4225}
4226
4227void
4228ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4229{
4230 clear_pending (EV_A_ (W)w);
4231 if (expect_false (!ev_is_active (w)))
4232 return;
4233
4234 EV_FREQUENT_CHECK;
4235 ev_ref (EV_A);
4236
4237 {
4238 int active = ev_active (w);
4239
4240 cleanups [active - 1] = cleanups [--cleanupcnt];
4241 ev_active (cleanups [active - 1]) = active;
4242 }
4243
4244 ev_stop (EV_A_ (W)w);
4245
4246 EV_FREQUENT_CHECK;
4247}
4248#endif
4249
3087#if EV_ASYNC_ENABLE 4250#if EV_ASYNC_ENABLE
3088void 4251void
3089ev_async_start (EV_P_ ev_async *w) 4252ev_async_start (EV_P_ ev_async *w) EV_THROW
3090{ 4253{
3091 if (expect_false (ev_is_active (w))) 4254 if (expect_false (ev_is_active (w)))
3092 return; 4255 return;
4256
4257 w->sent = 0;
3093 4258
3094 evpipe_init (EV_A); 4259 evpipe_init (EV_A);
3095 4260
3096 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
3097 4262
… …
3101 4266
3102 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3103} 4268}
3104 4269
3105void 4270void
3106ev_async_stop (EV_P_ ev_async *w) 4271ev_async_stop (EV_P_ ev_async *w) EV_THROW
3107{ 4272{
3108 clear_pending (EV_A_ (W)w); 4273 clear_pending (EV_A_ (W)w);
3109 if (expect_false (!ev_is_active (w))) 4274 if (expect_false (!ev_is_active (w)))
3110 return; 4275 return;
3111 4276
… …
3122 4287
3123 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
3124} 4289}
3125 4290
3126void 4291void
3127ev_async_send (EV_P_ ev_async *w) 4292ev_async_send (EV_P_ ev_async *w) EV_THROW
3128{ 4293{
3129 w->sent = 1; 4294 w->sent = 1;
3130 evpipe_write (EV_A_ &gotasync); 4295 evpipe_write (EV_A_ &async_pending);
3131} 4296}
3132#endif 4297#endif
3133 4298
3134/*****************************************************************************/ 4299/*****************************************************************************/
3135 4300
… …
3169 4334
3170 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4335 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3171} 4336}
3172 4337
3173void 4338void
3174ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4339ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3175{ 4340{
3176 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4341 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3177 4342
3178 if (expect_false (!once)) 4343 if (expect_false (!once))
3179 { 4344 {
3180 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4345 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3181 return; 4346 return;
3182 } 4347 }
3183 4348
3184 once->cb = cb; 4349 once->cb = cb;
3185 once->arg = arg; 4350 once->arg = arg;
… …
3199 } 4364 }
3200} 4365}
3201 4366
3202/*****************************************************************************/ 4367/*****************************************************************************/
3203 4368
3204#if 0 4369#if EV_WALK_ENABLE
3205void 4370void ecb_cold
3206ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3207{ 4372{
3208 int i, j; 4373 int i, j;
3209 ev_watcher_list *wl, *wn; 4374 ev_watcher_list *wl, *wn;
3210 4375
3211 if (types & (EV_IO | EV_EMBED)) 4376 if (types & (EV_IO | EV_EMBED))
… …
3225#if EV_USE_INOTIFY 4390#if EV_USE_INOTIFY
3226 if (ev_cb ((ev_io *)wl) == infy_cb) 4391 if (ev_cb ((ev_io *)wl) == infy_cb)
3227 ; 4392 ;
3228 else 4393 else
3229#endif 4394#endif
3230 if ((ev_io *)wl != &pipeev) 4395 if ((ev_io *)wl != &pipe_w)
3231 if (types & EV_IO) 4396 if (types & EV_IO)
3232 cb (EV_A_ EV_IO, wl); 4397 cb (EV_A_ EV_IO, wl);
3233 4398
3234 wl = wn; 4399 wl = wn;
3235 } 4400 }
… …
3254 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4419 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3255#endif 4420#endif
3256 4421
3257#if EV_IDLE_ENABLE 4422#if EV_IDLE_ENABLE
3258 if (types & EV_IDLE) 4423 if (types & EV_IDLE)
3259 for (j = NUMPRI; i--; ) 4424 for (j = NUMPRI; j--; )
3260 for (i = idlecnt [j]; i--; ) 4425 for (i = idlecnt [j]; i--; )
3261 cb (EV_A_ EV_IDLE, idles [j][i]); 4426 cb (EV_A_ EV_IDLE, idles [j][i]);
3262#endif 4427#endif
3263 4428
3264#if EV_FORK_ENABLE 4429#if EV_FORK_ENABLE
… …
3272 if (types & EV_ASYNC) 4437 if (types & EV_ASYNC)
3273 for (i = asynccnt; i--; ) 4438 for (i = asynccnt; i--; )
3274 cb (EV_A_ EV_ASYNC, asyncs [i]); 4439 cb (EV_A_ EV_ASYNC, asyncs [i]);
3275#endif 4440#endif
3276 4441
4442#if EV_PREPARE_ENABLE
3277 if (types & EV_PREPARE) 4443 if (types & EV_PREPARE)
3278 for (i = preparecnt; i--; ) 4444 for (i = preparecnt; i--; )
3279#if EV_EMBED_ENABLE 4445# if EV_EMBED_ENABLE
3280 if (ev_cb (prepares [i]) != embed_prepare_cb) 4446 if (ev_cb (prepares [i]) != embed_prepare_cb)
3281#endif 4447# endif
3282 cb (EV_A_ EV_PREPARE, prepares [i]); 4448 cb (EV_A_ EV_PREPARE, prepares [i]);
4449#endif
3283 4450
4451#if EV_CHECK_ENABLE
3284 if (types & EV_CHECK) 4452 if (types & EV_CHECK)
3285 for (i = checkcnt; i--; ) 4453 for (i = checkcnt; i--; )
3286 cb (EV_A_ EV_CHECK, checks [i]); 4454 cb (EV_A_ EV_CHECK, checks [i]);
4455#endif
3287 4456
4457#if EV_SIGNAL_ENABLE
3288 if (types & EV_SIGNAL) 4458 if (types & EV_SIGNAL)
3289 for (i = 0; i < signalmax; ++i) 4459 for (i = 0; i < EV_NSIG - 1; ++i)
3290 for (wl = signals [i].head; wl; ) 4460 for (wl = signals [i].head; wl; )
3291 { 4461 {
3292 wn = wl->next; 4462 wn = wl->next;
3293 cb (EV_A_ EV_SIGNAL, wl); 4463 cb (EV_A_ EV_SIGNAL, wl);
3294 wl = wn; 4464 wl = wn;
3295 } 4465 }
4466#endif
3296 4467
4468#if EV_CHILD_ENABLE
3297 if (types & EV_CHILD) 4469 if (types & EV_CHILD)
3298 for (i = EV_PID_HASHSIZE; i--; ) 4470 for (i = (EV_PID_HASHSIZE); i--; )
3299 for (wl = childs [i]; wl; ) 4471 for (wl = childs [i]; wl; )
3300 { 4472 {
3301 wn = wl->next; 4473 wn = wl->next;
3302 cb (EV_A_ EV_CHILD, wl); 4474 cb (EV_A_ EV_CHILD, wl);
3303 wl = wn; 4475 wl = wn;
3304 } 4476 }
4477#endif
3305/* EV_STAT 0x00001000 /* stat data changed */ 4478/* EV_STAT 0x00001000 /* stat data changed */
3306/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4479/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3307} 4480}
3308#endif 4481#endif
3309 4482
3310#if EV_MULTIPLICITY 4483#if EV_MULTIPLICITY
3311 #include "ev_wrap.h" 4484 #include "ev_wrap.h"
3312#endif 4485#endif
3313 4486
3314#ifdef __cplusplus
3315}
3316#endif
3317

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