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Comparing libev/ev.c (file contents):
Revision 1.287 by root, Mon Apr 20 19:45:58 2009 UTC vs.
Revision 1.424 by root, Tue May 1 22:01:40 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 <sys/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 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1850
1851 if (expect_true (*flag))
1852 return;
1853
1854 *flag = 1;
1855
1856 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1857
1858 pipe_write_skipped = 1;
1859
1860 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1861
1862 if (pipe_write_wanted)
1074 { 1863 {
1864 int old_errno;
1865
1866 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1867
1075 int old_errno = errno; /* save errno because write might clobber it */ 1868 old_errno = errno; /* save errno because write will clobber it */
1076
1077 *flag = 1;
1078 1869
1079#if EV_USE_EVENTFD 1870#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1871 if (evfd >= 0)
1081 { 1872 {
1082 uint64_t counter = 1; 1873 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1874 write (evfd, &counter, sizeof (uint64_t));
1084 } 1875 }
1085 else 1876 else
1086#endif 1877#endif
1878 {
1879 /* win32 people keep sending patches that change this write() to send() */
1880 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1881 /* so when you think this write should be a send instead, please find out */
1882 /* where your send() is from - it's definitely not the microsoft send, and */
1883 /* tell me. thank you. */
1884 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1885 /* check the ev documentation on how to use this flag */
1087 write (evpipe [1], &old_errno, 1); 1886 write (evpipe [1], &(evpipe [1]), 1);
1887 }
1088 1888
1089 errno = old_errno; 1889 errno = old_errno;
1090 } 1890 }
1091} 1891}
1092 1892
1893/* called whenever the libev signal pipe */
1894/* got some events (signal, async) */
1093static void 1895static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1897{
1898 int i;
1899
1900 if (revents & EV_READ)
1901 {
1096#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1903 if (evfd >= 0)
1098 { 1904 {
1099 uint64_t counter; 1905 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1101 } 1907 }
1102 else 1908 else
1103#endif 1909#endif
1104 { 1910 {
1105 char dummy; 1911 char dummy;
1912 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1913 read (evpipe [0], &dummy, 1);
1914 }
1915 }
1916
1917 pipe_write_skipped = 0;
1918
1919 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1920
1921#if EV_SIGNAL_ENABLE
1922 if (sig_pending)
1107 } 1923 {
1924 sig_pending = 0;
1108 1925
1109 if (gotsig && ev_is_default_loop (EV_A)) 1926 ECB_MEMORY_FENCE_RELEASE;
1110 {
1111 int signum;
1112 gotsig = 0;
1113 1927
1114 for (signum = signalmax; signum--; ) 1928 for (i = EV_NSIG - 1; i--; )
1115 if (signals [signum].gotsig) 1929 if (expect_false (signals [i].pending))
1116 ev_feed_signal_event (EV_A_ signum + 1); 1930 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1931 }
1932#endif
1118 1933
1119#if EV_ASYNC_ENABLE 1934#if EV_ASYNC_ENABLE
1120 if (gotasync) 1935 if (async_pending)
1121 { 1936 {
1122 int i; 1937 async_pending = 0;
1123 gotasync = 0; 1938
1939 ECB_MEMORY_FENCE_RELEASE;
1124 1940
1125 for (i = asynccnt; i--; ) 1941 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1942 if (asyncs [i]->sent)
1127 { 1943 {
1128 asyncs [i]->sent = 0; 1944 asyncs [i]->sent = 0;
… …
1132#endif 1948#endif
1133} 1949}
1134 1950
1135/*****************************************************************************/ 1951/*****************************************************************************/
1136 1952
1953void
1954ev_feed_signal (int signum) EV_THROW
1955{
1956#if EV_MULTIPLICITY
1957 EV_P = signals [signum - 1].loop;
1958
1959 if (!EV_A)
1960 return;
1961#endif
1962
1963 if (!ev_active (&pipe_w))
1964 return;
1965
1966 signals [signum - 1].pending = 1;
1967 evpipe_write (EV_A_ &sig_pending);
1968}
1969
1137static void 1970static void
1138ev_sighandler (int signum) 1971ev_sighandler (int signum)
1139{ 1972{
1973#ifdef _WIN32
1974 signal (signum, ev_sighandler);
1975#endif
1976
1977 ev_feed_signal (signum);
1978}
1979
1980void noinline
1981ev_feed_signal_event (EV_P_ int signum) EV_THROW
1982{
1983 WL w;
1984
1985 if (expect_false (signum <= 0 || signum > EV_NSIG))
1986 return;
1987
1988 --signum;
1989
1140#if EV_MULTIPLICITY 1990#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct; 1991 /* it is permissible to try to feed a signal to the wrong loop */
1142#endif 1992 /* or, likely more useful, feeding a signal nobody is waiting for */
1143 1993
1144#if _WIN32 1994 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; 1995 return;
1996#endif
1165 1997
1166 signals [signum].gotsig = 0; 1998 signals [signum].pending = 0;
1167 1999
1168 for (w = signals [signum].head; w; w = w->next) 2000 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2001 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 2002}
1171 2003
2004#if EV_USE_SIGNALFD
2005static void
2006sigfdcb (EV_P_ ev_io *iow, int revents)
2007{
2008 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2009
2010 for (;;)
2011 {
2012 ssize_t res = read (sigfd, si, sizeof (si));
2013
2014 /* not ISO-C, as res might be -1, but works with SuS */
2015 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2016 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2017
2018 if (res < (ssize_t)sizeof (si))
2019 break;
2020 }
2021}
2022#endif
2023
2024#endif
2025
1172/*****************************************************************************/ 2026/*****************************************************************************/
1173 2027
2028#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 2029static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 2030
1178static ev_signal childev; 2031static ev_signal childev;
1179 2032
1180#ifndef WIFCONTINUED 2033#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 2034# define WIFCONTINUED(status) 0
1182#endif 2035#endif
1183 2036
2037/* handle a single child status event */
1184inline_speed void 2038inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 2039child_reap (EV_P_ int chain, int pid, int status)
1186{ 2040{
1187 ev_child *w; 2041 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2042 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 2043
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2044 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 2045 {
1192 if ((w->pid == pid || !w->pid) 2046 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 2047 && (!traced || (w->flags & 1)))
1194 { 2048 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2049 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 2056
1203#ifndef WCONTINUED 2057#ifndef WCONTINUED
1204# define WCONTINUED 0 2058# define WCONTINUED 0
1205#endif 2059#endif
1206 2060
2061/* called on sigchld etc., calls waitpid */
1207static void 2062static void
1208childcb (EV_P_ ev_signal *sw, int revents) 2063childcb (EV_P_ ev_signal *sw, int revents)
1209{ 2064{
1210 int pid, status; 2065 int pid, status;
1211 2066
… …
1219 /* make sure we are called again until all children have been reaped */ 2074 /* 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 */ 2075 /* 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); 2076 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 2077
1223 child_reap (EV_A_ pid, pid, status); 2078 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 2079 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2080 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 2081}
1227 2082
1228#endif 2083#endif
1229 2084
1230/*****************************************************************************/ 2085/*****************************************************************************/
1231 2086
2087#if EV_USE_IOCP
2088# include "ev_iocp.c"
2089#endif
1232#if EV_USE_PORT 2090#if EV_USE_PORT
1233# include "ev_port.c" 2091# include "ev_port.c"
1234#endif 2092#endif
1235#if EV_USE_KQUEUE 2093#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 2094# include "ev_kqueue.c"
… …
1243#endif 2101#endif
1244#if EV_USE_SELECT 2102#if EV_USE_SELECT
1245# include "ev_select.c" 2103# include "ev_select.c"
1246#endif 2104#endif
1247 2105
1248int 2106int ecb_cold
1249ev_version_major (void) 2107ev_version_major (void) EV_THROW
1250{ 2108{
1251 return EV_VERSION_MAJOR; 2109 return EV_VERSION_MAJOR;
1252} 2110}
1253 2111
1254int 2112int ecb_cold
1255ev_version_minor (void) 2113ev_version_minor (void) EV_THROW
1256{ 2114{
1257 return EV_VERSION_MINOR; 2115 return EV_VERSION_MINOR;
1258} 2116}
1259 2117
1260/* return true if we are running with elevated privileges and should ignore env variables */ 2118/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 2119int inline_size ecb_cold
1262enable_secure (void) 2120enable_secure (void)
1263{ 2121{
1264#ifdef _WIN32 2122#ifdef _WIN32
1265 return 0; 2123 return 0;
1266#else 2124#else
1267 return getuid () != geteuid () 2125 return getuid () != geteuid ()
1268 || getgid () != getegid (); 2126 || getgid () != getegid ();
1269#endif 2127#endif
1270} 2128}
1271 2129
1272unsigned int 2130unsigned int ecb_cold
1273ev_supported_backends (void) 2131ev_supported_backends (void) EV_THROW
1274{ 2132{
1275 unsigned int flags = 0; 2133 unsigned int flags = 0;
1276 2134
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1278 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2136 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2139 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1282 2140
1283 return flags; 2141 return flags;
1284} 2142}
1285 2143
1286unsigned int 2144unsigned int ecb_cold
1287ev_recommended_backends (void) 2145ev_recommended_backends (void) EV_THROW
1288{ 2146{
1289 unsigned int flags = ev_supported_backends (); 2147 unsigned int flags = ev_supported_backends ();
1290 2148
1291#ifndef __NetBSD__ 2149#ifndef __NetBSD__
1292 /* kqueue is borked on everything but netbsd apparently */ 2150 /* kqueue is borked on everything but netbsd apparently */
… …
1296#ifdef __APPLE__ 2154#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 2155 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2156 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2157 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 2158#endif
2159#ifdef __FreeBSD__
2160 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2161#endif
1301 2162
1302 return flags; 2163 return flags;
1303} 2164}
1304 2165
2166unsigned int ecb_cold
2167ev_embeddable_backends (void) EV_THROW
2168{
2169 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2170
2171 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2172 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2173 flags &= ~EVBACKEND_EPOLL;
2174
2175 return flags;
2176}
2177
1305unsigned int 2178unsigned int
1306ev_embeddable_backends (void) 2179ev_backend (EV_P) EV_THROW
1307{ 2180{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2181 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} 2182}
1316 2183
2184#if EV_FEATURE_API
1317unsigned int 2185unsigned int
1318ev_backend (EV_P) 2186ev_iteration (EV_P) EV_THROW
1319{ 2187{
1320 return backend; 2188 return loop_count;
1321} 2189}
1322 2190
1323unsigned int 2191unsigned int
1324ev_loop_count (EV_P) 2192ev_depth (EV_P) EV_THROW
1325{ 2193{
1326 return loop_count; 2194 return loop_depth;
1327} 2195}
1328 2196
1329void 2197void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2198ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1331{ 2199{
1332 io_blocktime = interval; 2200 io_blocktime = interval;
1333} 2201}
1334 2202
1335void 2203void
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2204ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1337{ 2205{
1338 timeout_blocktime = interval; 2206 timeout_blocktime = interval;
1339} 2207}
1340 2208
2209void
2210ev_set_userdata (EV_P_ void *data) EV_THROW
2211{
2212 userdata = data;
2213}
2214
2215void *
2216ev_userdata (EV_P) EV_THROW
2217{
2218 return userdata;
2219}
2220
2221void
2222ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2223{
2224 invoke_cb = invoke_pending_cb;
2225}
2226
2227void
2228ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2229{
2230 release_cb = release;
2231 acquire_cb = acquire;
2232}
2233#endif
2234
2235/* initialise a loop structure, must be zero-initialised */
1341static void noinline 2236static void noinline ecb_cold
1342loop_init (EV_P_ unsigned int flags) 2237loop_init (EV_P_ unsigned int flags) EV_THROW
1343{ 2238{
1344 if (!backend) 2239 if (!backend)
1345 { 2240 {
2241 origflags = flags;
2242
1346#if EV_USE_REALTIME 2243#if EV_USE_REALTIME
1347 if (!have_realtime) 2244 if (!have_realtime)
1348 { 2245 {
1349 struct timespec ts; 2246 struct timespec ts;
1350 2247
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2258 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 2259 have_monotonic = 1;
1363 } 2260 }
1364#endif 2261#endif
1365 2262
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 */ 2263 /* pid check not overridable via env */
1381#ifndef _WIN32 2264#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 2265 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 2266 curpid = getpid ();
1384#endif 2267#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 2269 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 2270 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 2271 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 2272 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 2273
1391 if (!(flags & 0x0000ffffU)) 2274 ev_rt_now = ev_time ();
2275 mn_now = get_clock ();
2276 now_floor = mn_now;
2277 rtmn_diff = ev_rt_now - mn_now;
2278#if EV_FEATURE_API
2279 invoke_cb = ev_invoke_pending;
2280#endif
2281
2282 io_blocktime = 0.;
2283 timeout_blocktime = 0.;
2284 backend = 0;
2285 backend_fd = -1;
2286 sig_pending = 0;
2287#if EV_ASYNC_ENABLE
2288 async_pending = 0;
2289#endif
2290 pipe_write_skipped = 0;
2291 pipe_write_wanted = 0;
2292#if EV_USE_INOTIFY
2293 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2294#endif
2295#if EV_USE_SIGNALFD
2296 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2297#endif
2298
2299 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 2300 flags |= ev_recommended_backends ();
1393 2301
2302#if EV_USE_IOCP
2303 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2304#endif
1394#if EV_USE_PORT 2305#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2306 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 2307#endif
1397#if EV_USE_KQUEUE 2308#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2309 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 2316#endif
1406#if EV_USE_SELECT 2317#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2318 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 2319#endif
1409 2320
2321 ev_prepare_init (&pending_w, pendingcb);
2322
2323#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 2324 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 2325 ev_set_priority (&pipe_w, EV_MAXPRI);
2326#endif
1412 } 2327 }
1413} 2328}
1414 2329
1415static void noinline 2330/* free up a loop structure */
2331void ecb_cold
1416loop_destroy (EV_P) 2332ev_loop_destroy (EV_P)
1417{ 2333{
1418 int i; 2334 int i;
1419 2335
2336#if EV_MULTIPLICITY
2337 /* mimic free (0) */
2338 if (!EV_A)
2339 return;
2340#endif
2341
2342#if EV_CLEANUP_ENABLE
2343 /* queue cleanup watchers (and execute them) */
2344 if (expect_false (cleanupcnt))
2345 {
2346 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2347 EV_INVOKE_PENDING;
2348 }
2349#endif
2350
2351#if EV_CHILD_ENABLE
2352 if (ev_is_active (&childev))
2353 {
2354 ev_ref (EV_A); /* child watcher */
2355 ev_signal_stop (EV_A_ &childev);
2356 }
2357#endif
2358
1420 if (ev_is_active (&pipeev)) 2359 if (ev_is_active (&pipe_w))
1421 { 2360 {
1422 ev_ref (EV_A); /* signal watcher */ 2361 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 2362 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 2363
1425#if EV_USE_EVENTFD 2364#if EV_USE_EVENTFD
1426 if (evfd >= 0) 2365 if (evfd >= 0)
1427 close (evfd); 2366 close (evfd);
1428#endif 2367#endif
1429 2368
1430 if (evpipe [0] >= 0) 2369 if (evpipe [0] >= 0)
1431 { 2370 {
1432 close (evpipe [0]); 2371 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 2372 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 2373 }
1435 } 2374 }
2375
2376#if EV_USE_SIGNALFD
2377 if (ev_is_active (&sigfd_w))
2378 close (sigfd);
2379#endif
1436 2380
1437#if EV_USE_INOTIFY 2381#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 2382 if (fs_fd >= 0)
1439 close (fs_fd); 2383 close (fs_fd);
1440#endif 2384#endif
1441 2385
1442 if (backend_fd >= 0) 2386 if (backend_fd >= 0)
1443 close (backend_fd); 2387 close (backend_fd);
1444 2388
2389#if EV_USE_IOCP
2390 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2391#endif
1445#if EV_USE_PORT 2392#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2393 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 2394#endif
1448#if EV_USE_KQUEUE 2395#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2396 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 2411#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 2412 array_free (idle, [i]);
1466#endif 2413#endif
1467 } 2414 }
1468 2415
1469 ev_free (anfds); anfdmax = 0; 2416 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 2417
1471 /* have to use the microsoft-never-gets-it-right macro */ 2418 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 2419 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 2420 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 2421 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 2423 array_free (periodic, EMPTY);
1477#endif 2424#endif
1478#if EV_FORK_ENABLE 2425#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 2426 array_free (fork, EMPTY);
1480#endif 2427#endif
2428#if EV_CLEANUP_ENABLE
2429 array_free (cleanup, EMPTY);
2430#endif
1481 array_free (prepare, EMPTY); 2431 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 2432 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 2433#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 2434 array_free (async, EMPTY);
1485#endif 2435#endif
1486 2436
1487 backend = 0; 2437 backend = 0;
2438
2439#if EV_MULTIPLICITY
2440 if (ev_is_default_loop (EV_A))
2441#endif
2442 ev_default_loop_ptr = 0;
2443#if EV_MULTIPLICITY
2444 else
2445 ev_free (EV_A);
2446#endif
1488} 2447}
1489 2448
1490#if EV_USE_INOTIFY 2449#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 2450inline_size void infy_fork (EV_P);
1492#endif 2451#endif
… …
1505#endif 2464#endif
1506#if EV_USE_INOTIFY 2465#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 2466 infy_fork (EV_A);
1508#endif 2467#endif
1509 2468
1510 if (ev_is_active (&pipeev)) 2469 if (ev_is_active (&pipe_w))
1511 { 2470 {
1512 /* this "locks" the handlers against writing to the pipe */ 2471 /* 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 2472
1519 ev_ref (EV_A); 2473 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 2474 ev_io_stop (EV_A_ &pipe_w);
1521 2475
1522#if EV_USE_EVENTFD 2476#if EV_USE_EVENTFD
1523 if (evfd >= 0) 2477 if (evfd >= 0)
1524 close (evfd); 2478 close (evfd);
1525#endif 2479#endif
1526 2480
1527 if (evpipe [0] >= 0) 2481 if (evpipe [0] >= 0)
1528 { 2482 {
1529 close (evpipe [0]); 2483 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 2484 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 2485 }
1532 2486
2487#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 2488 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 2489 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 2490 pipecb (EV_A_ &pipe_w, EV_READ);
2491#endif
1536 } 2492 }
1537 2493
1538 postfork = 0; 2494 postfork = 0;
1539} 2495}
1540 2496
1541#if EV_MULTIPLICITY 2497#if EV_MULTIPLICITY
1542 2498
1543struct ev_loop * 2499struct ev_loop * ecb_cold
1544ev_loop_new (unsigned int flags) 2500ev_loop_new (unsigned int flags) EV_THROW
1545{ 2501{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2502 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 2503
1548 memset (loop, 0, sizeof (struct ev_loop)); 2504 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 2505 loop_init (EV_A_ flags);
1551 2506
1552 if (ev_backend (EV_A)) 2507 if (ev_backend (EV_A))
1553 return loop; 2508 return EV_A;
1554 2509
2510 ev_free (EV_A);
1555 return 0; 2511 return 0;
1556} 2512}
1557 2513
1558void 2514#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 2515
1571#if EV_VERIFY 2516#if EV_VERIFY
1572static void noinline 2517static void noinline ecb_cold
1573verify_watcher (EV_P_ W w) 2518verify_watcher (EV_P_ W w)
1574{ 2519{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2520 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 2521
1577 if (w->pending) 2522 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2523 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 2524}
1580 2525
1581static void noinline 2526static void noinline ecb_cold
1582verify_heap (EV_P_ ANHE *heap, int N) 2527verify_heap (EV_P_ ANHE *heap, int N)
1583{ 2528{
1584 int i; 2529 int i;
1585 2530
1586 for (i = HEAP0; i < N + HEAP0; ++i) 2531 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 2536
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2537 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 2538 }
1594} 2539}
1595 2540
1596static void noinline 2541static void noinline ecb_cold
1597array_verify (EV_P_ W *ws, int cnt) 2542array_verify (EV_P_ W *ws, int cnt)
1598{ 2543{
1599 while (cnt--) 2544 while (cnt--)
1600 { 2545 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2546 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 2547 verify_watcher (EV_A_ ws [cnt]);
1603 } 2548 }
1604} 2549}
1605#endif 2550#endif
1606 2551
1607void 2552#if EV_FEATURE_API
1608ev_loop_verify (EV_P) 2553void ecb_cold
2554ev_verify (EV_P) EV_THROW
1609{ 2555{
1610#if EV_VERIFY 2556#if EV_VERIFY
1611 int i; 2557 int i;
1612 WL w; 2558 WL w;
1613 2559
… …
1647#if EV_FORK_ENABLE 2593#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2594 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2595 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2596#endif
1651 2597
2598#if EV_CLEANUP_ENABLE
2599 assert (cleanupmax >= cleanupcnt);
2600 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2601#endif
2602
1652#if EV_ASYNC_ENABLE 2603#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2604 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2605 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2606#endif
1656 2607
2608#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2609 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2610 array_verify (EV_A_ (W *)prepares, preparecnt);
2611#endif
1659 2612
2613#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2614 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2615 array_verify (EV_A_ (W *)checks, checkcnt);
2616#endif
1662 2617
1663# if 0 2618# if 0
2619#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2620 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) 2621 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2622#endif
1666# endif 2623# endif
1667#endif 2624#endif
1668} 2625}
1669 2626#endif
1670#endif /* multiplicity */
1671 2627
1672#if EV_MULTIPLICITY 2628#if EV_MULTIPLICITY
1673struct ev_loop * 2629struct ev_loop * ecb_cold
1674ev_default_loop_init (unsigned int flags)
1675#else 2630#else
1676int 2631int
2632#endif
1677ev_default_loop (unsigned int flags) 2633ev_default_loop (unsigned int flags) EV_THROW
1678#endif
1679{ 2634{
1680 if (!ev_default_loop_ptr) 2635 if (!ev_default_loop_ptr)
1681 { 2636 {
1682#if EV_MULTIPLICITY 2637#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2638 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2639#else
1685 ev_default_loop_ptr = 1; 2640 ev_default_loop_ptr = 1;
1686#endif 2641#endif
1687 2642
1688 loop_init (EV_A_ flags); 2643 loop_init (EV_A_ flags);
1689 2644
1690 if (ev_backend (EV_A)) 2645 if (ev_backend (EV_A))
1691 { 2646 {
1692#ifndef _WIN32 2647#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2648 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2649 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2650 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2651 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2652#endif
… …
1702 2657
1703 return ev_default_loop_ptr; 2658 return ev_default_loop_ptr;
1704} 2659}
1705 2660
1706void 2661void
1707ev_default_destroy (void) 2662ev_loop_fork (EV_P) EV_THROW
1708{ 2663{
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 */ 2664 postfork = 1; /* must be in line with ev_default_fork */
1731} 2665}
1732 2666
1733/*****************************************************************************/ 2667/*****************************************************************************/
1734 2668
1735void 2669void
1736ev_invoke (EV_P_ void *w, int revents) 2670ev_invoke (EV_P_ void *w, int revents)
1737{ 2671{
1738 EV_CB_INVOKE ((W)w, revents); 2672 EV_CB_INVOKE ((W)w, revents);
1739} 2673}
1740 2674
1741inline_speed void 2675unsigned int
1742call_pending (EV_P) 2676ev_pending_count (EV_P) EV_THROW
2677{
2678 int pri;
2679 unsigned int count = 0;
2680
2681 for (pri = NUMPRI; pri--; )
2682 count += pendingcnt [pri];
2683
2684 return count;
2685}
2686
2687void noinline
2688ev_invoke_pending (EV_P)
1743{ 2689{
1744 int pri; 2690 int pri;
1745 2691
1746 for (pri = NUMPRI; pri--; ) 2692 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2693 while (pendingcnt [pri])
1748 { 2694 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2695 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2696
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; 2697 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2698 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2699 EV_FREQUENT_CHECK;
1758 }
1759 } 2700 }
1760} 2701}
1761 2702
1762#if EV_IDLE_ENABLE 2703#if EV_IDLE_ENABLE
2704/* make idle watchers pending. this handles the "call-idle */
2705/* only when higher priorities are idle" logic */
1763inline_size void 2706inline_size void
1764idle_reify (EV_P) 2707idle_reify (EV_P)
1765{ 2708{
1766 if (expect_false (idleall)) 2709 if (expect_false (idleall))
1767 { 2710 {
… …
1780 } 2723 }
1781 } 2724 }
1782} 2725}
1783#endif 2726#endif
1784 2727
2728/* make timers pending */
1785inline_size void 2729inline_size void
1786timers_reify (EV_P) 2730timers_reify (EV_P)
1787{ 2731{
1788 EV_FREQUENT_CHECK; 2732 EV_FREQUENT_CHECK;
1789 2733
… …
1813 EV_FREQUENT_CHECK; 2757 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2758 feed_reverse (EV_A_ (W)w);
1815 } 2759 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2760 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2761
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2762 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2763 }
1820} 2764}
1821 2765
1822#if EV_PERIODIC_ENABLE 2766#if EV_PERIODIC_ENABLE
2767
2768static void noinline
2769periodic_recalc (EV_P_ ev_periodic *w)
2770{
2771 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2772 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2773
2774 /* the above almost always errs on the low side */
2775 while (at <= ev_rt_now)
2776 {
2777 ev_tstamp nat = at + w->interval;
2778
2779 /* when resolution fails us, we use ev_rt_now */
2780 if (expect_false (nat == at))
2781 {
2782 at = ev_rt_now;
2783 break;
2784 }
2785
2786 at = nat;
2787 }
2788
2789 ev_at (w) = at;
2790}
2791
2792/* make periodics pending */
1823inline_size void 2793inline_size void
1824periodics_reify (EV_P) 2794periodics_reify (EV_P)
1825{ 2795{
1826 EV_FREQUENT_CHECK; 2796 EV_FREQUENT_CHECK;
1827 2797
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2815 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2816 downheap (periodics, periodiccnt, HEAP0);
1847 } 2817 }
1848 else if (w->interval) 2818 else if (w->interval)
1849 { 2819 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2820 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]); 2821 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2822 downheap (periodics, periodiccnt, HEAP0);
1866 } 2823 }
1867 else 2824 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2825 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2831
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2832 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2833 }
1877} 2834}
1878 2835
2836/* simply recalculate all periodics */
2837/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2838static void noinline ecb_cold
1880periodics_reschedule (EV_P) 2839periodics_reschedule (EV_P)
1881{ 2840{
1882 int i; 2841 int i;
1883 2842
1884 /* adjust periodics after time jump */ 2843 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2846 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2847
1889 if (w->reschedule_cb) 2848 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2849 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2850 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2851 periodic_recalc (EV_A_ w);
1893 2852
1894 ANHE_at_cache (periodics [i]); 2853 ANHE_at_cache (periodics [i]);
1895 } 2854 }
1896 2855
1897 reheap (periodics, periodiccnt); 2856 reheap (periodics, periodiccnt);
1898} 2857}
1899#endif 2858#endif
1900 2859
2860/* adjust all timers by a given offset */
1901static void noinline 2861static void noinline ecb_cold
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2862timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2863{
1904 int i; 2864 int i;
1905 2865
1906 for (i = 0; i < timercnt; ++i) 2866 for (i = 0; i < timercnt; ++i)
… …
1909 ANHE_w (*he)->at += adjust; 2869 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2870 ANHE_at_cache (*he);
1911 } 2871 }
1912} 2872}
1913 2873
2874/* fetch new monotonic and realtime times from the kernel */
2875/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2876inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2877time_update (EV_P_ ev_tstamp max_block)
1916{ 2878{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2879#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2880 if (expect_true (have_monotonic))
1921 { 2881 {
2882 int i;
1922 ev_tstamp odiff = rtmn_diff; 2883 ev_tstamp odiff = rtmn_diff;
1923 2884
1924 mn_now = get_clock (); 2885 mn_now = get_clock ();
1925 2886
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2887 /* 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 2903 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 2904 * in the unlikely event of having been preempted here.
1944 */ 2905 */
1945 for (i = 4; --i; ) 2906 for (i = 4; --i; )
1946 { 2907 {
2908 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 2909 rtmn_diff = ev_rt_now - mn_now;
1948 2910
2911 diff = odiff - rtmn_diff;
2912
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2913 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 2914 return; /* all is well */
1951 2915
1952 ev_rt_now = ev_time (); 2916 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 2917 mn_now = get_clock ();
1954 now_floor = mn_now; 2918 now_floor = mn_now;
… …
1976 2940
1977 mn_now = ev_rt_now; 2941 mn_now = ev_rt_now;
1978 } 2942 }
1979} 2943}
1980 2944
1981static int loop_done; 2945int
1982
1983void
1984ev_loop (EV_P_ int flags) 2946ev_run (EV_P_ int flags)
1985{ 2947{
2948#if EV_FEATURE_API
2949 ++loop_depth;
2950#endif
2951
2952 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2953
1986 loop_done = EVUNLOOP_CANCEL; 2954 loop_done = EVBREAK_CANCEL;
1987 2955
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2956 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 2957
1990 do 2958 do
1991 { 2959 {
1992#if EV_VERIFY >= 2 2960#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 2961 ev_verify (EV_A);
1994#endif 2962#endif
1995 2963
1996#ifndef _WIN32 2964#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 2965 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 2966 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 2974 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 2975 if (expect_false (postfork))
2008 if (forkcnt) 2976 if (forkcnt)
2009 { 2977 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2978 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 2979 EV_INVOKE_PENDING;
2012 } 2980 }
2013#endif 2981#endif
2014 2982
2983#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 2984 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 2985 if (expect_false (preparecnt))
2017 { 2986 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2987 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 2988 EV_INVOKE_PENDING;
2020 } 2989 }
2990#endif
2991
2992 if (expect_false (loop_done))
2993 break;
2021 2994
2022 /* we might have forked, so reify kernel state if necessary */ 2995 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 2996 if (expect_false (postfork))
2024 loop_fork (EV_A); 2997 loop_fork (EV_A);
2025 2998
… …
2029 /* calculate blocking time */ 3002 /* calculate blocking time */
2030 { 3003 {
2031 ev_tstamp waittime = 0.; 3004 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 3005 ev_tstamp sleeptime = 0.;
2033 3006
3007 /* remember old timestamp for io_blocktime calculation */
3008 ev_tstamp prev_mn_now = mn_now;
3009
3010 /* update time to cancel out callback processing overhead */
3011 time_update (EV_A_ 1e100);
3012
3013 /* from now on, we want a pipe-wake-up */
3014 pipe_write_wanted = 1;
3015
3016 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3017
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3018 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 3019 {
2036 /* update time to cancel out callback processing overhead */
2037 time_update (EV_A_ 1e100);
2038
2039 waittime = MAX_BLOCKTIME; 3020 waittime = MAX_BLOCKTIME;
2040 3021
2041 if (timercnt) 3022 if (timercnt)
2042 { 3023 {
2043 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3024 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2044 if (waittime > to) waittime = to; 3025 if (waittime > to) waittime = to;
2045 } 3026 }
2046 3027
2047#if EV_PERIODIC_ENABLE 3028#if EV_PERIODIC_ENABLE
2048 if (periodiccnt) 3029 if (periodiccnt)
2049 { 3030 {
2050 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3031 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2051 if (waittime > to) waittime = to; 3032 if (waittime > to) waittime = to;
2052 } 3033 }
2053#endif 3034#endif
2054 3035
3036 /* don't let timeouts decrease the waittime below timeout_blocktime */
2055 if (expect_false (waittime < timeout_blocktime)) 3037 if (expect_false (waittime < timeout_blocktime))
2056 waittime = timeout_blocktime; 3038 waittime = timeout_blocktime;
2057 3039
2058 sleeptime = waittime - backend_fudge; 3040 /* at this point, we NEED to wait, so we have to ensure */
3041 /* to pass a minimum nonzero value to the backend */
3042 if (expect_false (waittime < backend_mintime))
3043 waittime = backend_mintime;
2059 3044
3045 /* extra check because io_blocktime is commonly 0 */
2060 if (expect_true (sleeptime > io_blocktime)) 3046 if (expect_false (io_blocktime))
2061 sleeptime = io_blocktime;
2062
2063 if (sleeptime)
2064 { 3047 {
3048 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3049
3050 if (sleeptime > waittime - backend_mintime)
3051 sleeptime = waittime - backend_mintime;
3052
3053 if (expect_true (sleeptime > 0.))
3054 {
2065 ev_sleep (sleeptime); 3055 ev_sleep (sleeptime);
2066 waittime -= sleeptime; 3056 waittime -= sleeptime;
3057 }
2067 } 3058 }
2068 } 3059 }
2069 3060
3061#if EV_FEATURE_API
2070 ++loop_count; 3062 ++loop_count;
3063#endif
3064 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2071 backend_poll (EV_A_ waittime); 3065 backend_poll (EV_A_ waittime);
3066 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3067
3068 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3069
3070 if (pipe_write_skipped)
3071 {
3072 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3073 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3074 }
3075
2072 3076
2073 /* update ev_rt_now, do magic */ 3077 /* update ev_rt_now, do magic */
2074 time_update (EV_A_ waittime + sleeptime); 3078 time_update (EV_A_ waittime + sleeptime);
2075 } 3079 }
2076 3080
… …
2083#if EV_IDLE_ENABLE 3087#if EV_IDLE_ENABLE
2084 /* queue idle watchers unless other events are pending */ 3088 /* queue idle watchers unless other events are pending */
2085 idle_reify (EV_A); 3089 idle_reify (EV_A);
2086#endif 3090#endif
2087 3091
3092#if EV_CHECK_ENABLE
2088 /* queue check watchers, to be executed first */ 3093 /* queue check watchers, to be executed first */
2089 if (expect_false (checkcnt)) 3094 if (expect_false (checkcnt))
2090 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3095 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3096#endif
2091 3097
2092 call_pending (EV_A); 3098 EV_INVOKE_PENDING;
2093 } 3099 }
2094 while (expect_true ( 3100 while (expect_true (
2095 activecnt 3101 activecnt
2096 && !loop_done 3102 && !loop_done
2097 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3103 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2098 )); 3104 ));
2099 3105
2100 if (loop_done == EVUNLOOP_ONE) 3106 if (loop_done == EVBREAK_ONE)
2101 loop_done = EVUNLOOP_CANCEL; 3107 loop_done = EVBREAK_CANCEL;
3108
3109#if EV_FEATURE_API
3110 --loop_depth;
3111#endif
3112
3113 return activecnt;
2102} 3114}
2103 3115
2104void 3116void
2105ev_unloop (EV_P_ int how) 3117ev_break (EV_P_ int how) EV_THROW
2106{ 3118{
2107 loop_done = how; 3119 loop_done = how;
2108} 3120}
2109 3121
2110void 3122void
2111ev_ref (EV_P) 3123ev_ref (EV_P) EV_THROW
2112{ 3124{
2113 ++activecnt; 3125 ++activecnt;
2114} 3126}
2115 3127
2116void 3128void
2117ev_unref (EV_P) 3129ev_unref (EV_P) EV_THROW
2118{ 3130{
2119 --activecnt; 3131 --activecnt;
2120} 3132}
2121 3133
2122void 3134void
2123ev_now_update (EV_P) 3135ev_now_update (EV_P) EV_THROW
2124{ 3136{
2125 time_update (EV_A_ 1e100); 3137 time_update (EV_A_ 1e100);
2126} 3138}
2127 3139
2128void 3140void
2129ev_suspend (EV_P) 3141ev_suspend (EV_P) EV_THROW
2130{ 3142{
2131 ev_now_update (EV_A); 3143 ev_now_update (EV_A);
2132} 3144}
2133 3145
2134void 3146void
2135ev_resume (EV_P) 3147ev_resume (EV_P) EV_THROW
2136{ 3148{
2137 ev_tstamp mn_prev = mn_now; 3149 ev_tstamp mn_prev = mn_now;
2138 3150
2139 ev_now_update (EV_A); 3151 ev_now_update (EV_A);
2140 timers_reschedule (EV_A_ mn_now - mn_prev); 3152 timers_reschedule (EV_A_ mn_now - mn_prev);
2141#if EV_PERIODIC_ENABLE 3153#if EV_PERIODIC_ENABLE
3154 /* TODO: really do this? */
2142 periodics_reschedule (EV_A); 3155 periodics_reschedule (EV_A);
2143#endif 3156#endif
2144} 3157}
2145 3158
2146/*****************************************************************************/ 3159/*****************************************************************************/
3160/* singly-linked list management, used when the expected list length is short */
2147 3161
2148inline_size void 3162inline_size void
2149wlist_add (WL *head, WL elem) 3163wlist_add (WL *head, WL elem)
2150{ 3164{
2151 elem->next = *head; 3165 elem->next = *head;
… …
2155inline_size void 3169inline_size void
2156wlist_del (WL *head, WL elem) 3170wlist_del (WL *head, WL elem)
2157{ 3171{
2158 while (*head) 3172 while (*head)
2159 { 3173 {
2160 if (*head == elem) 3174 if (expect_true (*head == elem))
2161 { 3175 {
2162 *head = elem->next; 3176 *head = elem->next;
2163 return; 3177 break;
2164 } 3178 }
2165 3179
2166 head = &(*head)->next; 3180 head = &(*head)->next;
2167 } 3181 }
2168} 3182}
2169 3183
3184/* internal, faster, version of ev_clear_pending */
2170inline_speed void 3185inline_speed void
2171clear_pending (EV_P_ W w) 3186clear_pending (EV_P_ W w)
2172{ 3187{
2173 if (w->pending) 3188 if (w->pending)
2174 { 3189 {
2175 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3190 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2176 w->pending = 0; 3191 w->pending = 0;
2177 } 3192 }
2178} 3193}
2179 3194
2180int 3195int
2181ev_clear_pending (EV_P_ void *w) 3196ev_clear_pending (EV_P_ void *w) EV_THROW
2182{ 3197{
2183 W w_ = (W)w; 3198 W w_ = (W)w;
2184 int pending = w_->pending; 3199 int pending = w_->pending;
2185 3200
2186 if (expect_true (pending)) 3201 if (expect_true (pending))
2187 { 3202 {
2188 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3203 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3204 p->w = (W)&pending_w;
2189 w_->pending = 0; 3205 w_->pending = 0;
2190 p->w = 0;
2191 return p->events; 3206 return p->events;
2192 } 3207 }
2193 else 3208 else
2194 return 0; 3209 return 0;
2195} 3210}
2196 3211
2197inline_size void 3212inline_size void
2198pri_adjust (EV_P_ W w) 3213pri_adjust (EV_P_ W w)
2199{ 3214{
2200 int pri = w->priority; 3215 int pri = ev_priority (w);
2201 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3216 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2202 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3217 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2203 w->priority = pri; 3218 ev_set_priority (w, pri);
2204} 3219}
2205 3220
2206inline_speed void 3221inline_speed void
2207ev_start (EV_P_ W w, int active) 3222ev_start (EV_P_ W w, int active)
2208{ 3223{
… …
2219} 3234}
2220 3235
2221/*****************************************************************************/ 3236/*****************************************************************************/
2222 3237
2223void noinline 3238void noinline
2224ev_io_start (EV_P_ ev_io *w) 3239ev_io_start (EV_P_ ev_io *w) EV_THROW
2225{ 3240{
2226 int fd = w->fd; 3241 int fd = w->fd;
2227 3242
2228 if (expect_false (ev_is_active (w))) 3243 if (expect_false (ev_is_active (w)))
2229 return; 3244 return;
2230 3245
2231 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3246 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2232 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3247 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2233 3248
2234 EV_FREQUENT_CHECK; 3249 EV_FREQUENT_CHECK;
2235 3250
2236 ev_start (EV_A_ (W)w, 1); 3251 ev_start (EV_A_ (W)w, 1);
2237 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3252 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2238 wlist_add (&anfds[fd].head, (WL)w); 3253 wlist_add (&anfds[fd].head, (WL)w);
2239 3254
2240 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3255 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2241 w->events &= ~EV__IOFDSET; 3256 w->events &= ~EV__IOFDSET;
2242 3257
2243 EV_FREQUENT_CHECK; 3258 EV_FREQUENT_CHECK;
2244} 3259}
2245 3260
2246void noinline 3261void noinline
2247ev_io_stop (EV_P_ ev_io *w) 3262ev_io_stop (EV_P_ ev_io *w) EV_THROW
2248{ 3263{
2249 clear_pending (EV_A_ (W)w); 3264 clear_pending (EV_A_ (W)w);
2250 if (expect_false (!ev_is_active (w))) 3265 if (expect_false (!ev_is_active (w)))
2251 return; 3266 return;
2252 3267
… …
2255 EV_FREQUENT_CHECK; 3270 EV_FREQUENT_CHECK;
2256 3271
2257 wlist_del (&anfds[w->fd].head, (WL)w); 3272 wlist_del (&anfds[w->fd].head, (WL)w);
2258 ev_stop (EV_A_ (W)w); 3273 ev_stop (EV_A_ (W)w);
2259 3274
2260 fd_change (EV_A_ w->fd, 1); 3275 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2261 3276
2262 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2263} 3278}
2264 3279
2265void noinline 3280void noinline
2266ev_timer_start (EV_P_ ev_timer *w) 3281ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2267{ 3282{
2268 if (expect_false (ev_is_active (w))) 3283 if (expect_false (ev_is_active (w)))
2269 return; 3284 return;
2270 3285
2271 ev_at (w) += mn_now; 3286 ev_at (w) += mn_now;
… …
2285 3300
2286 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3301 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2287} 3302}
2288 3303
2289void noinline 3304void noinline
2290ev_timer_stop (EV_P_ ev_timer *w) 3305ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2291{ 3306{
2292 clear_pending (EV_A_ (W)w); 3307 clear_pending (EV_A_ (W)w);
2293 if (expect_false (!ev_is_active (w))) 3308 if (expect_false (!ev_is_active (w)))
2294 return; 3309 return;
2295 3310
… …
2307 timers [active] = timers [timercnt + HEAP0]; 3322 timers [active] = timers [timercnt + HEAP0];
2308 adjustheap (timers, timercnt, active); 3323 adjustheap (timers, timercnt, active);
2309 } 3324 }
2310 } 3325 }
2311 3326
2312 EV_FREQUENT_CHECK;
2313
2314 ev_at (w) -= mn_now; 3327 ev_at (w) -= mn_now;
2315 3328
2316 ev_stop (EV_A_ (W)w); 3329 ev_stop (EV_A_ (W)w);
3330
3331 EV_FREQUENT_CHECK;
2317} 3332}
2318 3333
2319void noinline 3334void noinline
2320ev_timer_again (EV_P_ ev_timer *w) 3335ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2321{ 3336{
2322 EV_FREQUENT_CHECK; 3337 EV_FREQUENT_CHECK;
3338
3339 clear_pending (EV_A_ (W)w);
2323 3340
2324 if (ev_is_active (w)) 3341 if (ev_is_active (w))
2325 { 3342 {
2326 if (w->repeat) 3343 if (w->repeat)
2327 { 3344 {
… …
2339 } 3356 }
2340 3357
2341 EV_FREQUENT_CHECK; 3358 EV_FREQUENT_CHECK;
2342} 3359}
2343 3360
3361ev_tstamp
3362ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3363{
3364 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3365}
3366
2344#if EV_PERIODIC_ENABLE 3367#if EV_PERIODIC_ENABLE
2345void noinline 3368void noinline
2346ev_periodic_start (EV_P_ ev_periodic *w) 3369ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2347{ 3370{
2348 if (expect_false (ev_is_active (w))) 3371 if (expect_false (ev_is_active (w)))
2349 return; 3372 return;
2350 3373
2351 if (w->reschedule_cb) 3374 if (w->reschedule_cb)
2352 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3375 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2353 else if (w->interval) 3376 else if (w->interval)
2354 { 3377 {
2355 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3378 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2356 /* this formula differs from the one in periodic_reify because we do not always round up */ 3379 periodic_recalc (EV_A_ w);
2357 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2358 } 3380 }
2359 else 3381 else
2360 ev_at (w) = w->offset; 3382 ev_at (w) = w->offset;
2361 3383
2362 EV_FREQUENT_CHECK; 3384 EV_FREQUENT_CHECK;
… …
2372 3394
2373 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3395 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2374} 3396}
2375 3397
2376void noinline 3398void noinline
2377ev_periodic_stop (EV_P_ ev_periodic *w) 3399ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2378{ 3400{
2379 clear_pending (EV_A_ (W)w); 3401 clear_pending (EV_A_ (W)w);
2380 if (expect_false (!ev_is_active (w))) 3402 if (expect_false (!ev_is_active (w)))
2381 return; 3403 return;
2382 3404
… …
2394 periodics [active] = periodics [periodiccnt + HEAP0]; 3416 periodics [active] = periodics [periodiccnt + HEAP0];
2395 adjustheap (periodics, periodiccnt, active); 3417 adjustheap (periodics, periodiccnt, active);
2396 } 3418 }
2397 } 3419 }
2398 3420
2399 EV_FREQUENT_CHECK;
2400
2401 ev_stop (EV_A_ (W)w); 3421 ev_stop (EV_A_ (W)w);
3422
3423 EV_FREQUENT_CHECK;
2402} 3424}
2403 3425
2404void noinline 3426void noinline
2405ev_periodic_again (EV_P_ ev_periodic *w) 3427ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2406{ 3428{
2407 /* TODO: use adjustheap and recalculation */ 3429 /* TODO: use adjustheap and recalculation */
2408 ev_periodic_stop (EV_A_ w); 3430 ev_periodic_stop (EV_A_ w);
2409 ev_periodic_start (EV_A_ w); 3431 ev_periodic_start (EV_A_ w);
2410} 3432}
… …
2412 3434
2413#ifndef SA_RESTART 3435#ifndef SA_RESTART
2414# define SA_RESTART 0 3436# define SA_RESTART 0
2415#endif 3437#endif
2416 3438
3439#if EV_SIGNAL_ENABLE
3440
2417void noinline 3441void noinline
2418ev_signal_start (EV_P_ ev_signal *w) 3442ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2419{ 3443{
2420#if EV_MULTIPLICITY
2421 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2422#endif
2423 if (expect_false (ev_is_active (w))) 3444 if (expect_false (ev_is_active (w)))
2424 return; 3445 return;
2425 3446
2426 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3447 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2427 3448
2428 evpipe_init (EV_A); 3449#if EV_MULTIPLICITY
3450 assert (("libev: a signal must not be attached to two different loops",
3451 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2429 3452
2430 EV_FREQUENT_CHECK; 3453 signals [w->signum - 1].loop = EV_A;
3454#endif
2431 3455
3456 EV_FREQUENT_CHECK;
3457
3458#if EV_USE_SIGNALFD
3459 if (sigfd == -2)
2432 { 3460 {
2433#ifndef _WIN32 3461 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2434 sigset_t full, prev; 3462 if (sigfd < 0 && errno == EINVAL)
2435 sigfillset (&full); 3463 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2436 sigprocmask (SIG_SETMASK, &full, &prev);
2437#endif
2438 3464
2439 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3465 if (sigfd >= 0)
3466 {
3467 fd_intern (sigfd); /* doing it twice will not hurt */
2440 3468
2441#ifndef _WIN32 3469 sigemptyset (&sigfd_set);
2442 sigprocmask (SIG_SETMASK, &prev, 0); 3470
2443#endif 3471 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3472 ev_set_priority (&sigfd_w, EV_MAXPRI);
3473 ev_io_start (EV_A_ &sigfd_w);
3474 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3475 }
2444 } 3476 }
3477
3478 if (sigfd >= 0)
3479 {
3480 /* TODO: check .head */
3481 sigaddset (&sigfd_set, w->signum);
3482 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3483
3484 signalfd (sigfd, &sigfd_set, 0);
3485 }
3486#endif
2445 3487
2446 ev_start (EV_A_ (W)w, 1); 3488 ev_start (EV_A_ (W)w, 1);
2447 wlist_add (&signals [w->signum - 1].head, (WL)w); 3489 wlist_add (&signals [w->signum - 1].head, (WL)w);
2448 3490
2449 if (!((WL)w)->next) 3491 if (!((WL)w)->next)
3492# if EV_USE_SIGNALFD
3493 if (sigfd < 0) /*TODO*/
3494# endif
2450 { 3495 {
2451#if _WIN32 3496# ifdef _WIN32
3497 evpipe_init (EV_A);
3498
2452 signal (w->signum, ev_sighandler); 3499 signal (w->signum, ev_sighandler);
2453#else 3500# else
2454 struct sigaction sa; 3501 struct sigaction sa;
3502
3503 evpipe_init (EV_A);
3504
2455 sa.sa_handler = ev_sighandler; 3505 sa.sa_handler = ev_sighandler;
2456 sigfillset (&sa.sa_mask); 3506 sigfillset (&sa.sa_mask);
2457 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3507 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2458 sigaction (w->signum, &sa, 0); 3508 sigaction (w->signum, &sa, 0);
3509
3510 if (origflags & EVFLAG_NOSIGMASK)
3511 {
3512 sigemptyset (&sa.sa_mask);
3513 sigaddset (&sa.sa_mask, w->signum);
3514 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3515 }
2459#endif 3516#endif
2460 } 3517 }
2461 3518
2462 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2463} 3520}
2464 3521
2465void noinline 3522void noinline
2466ev_signal_stop (EV_P_ ev_signal *w) 3523ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2467{ 3524{
2468 clear_pending (EV_A_ (W)w); 3525 clear_pending (EV_A_ (W)w);
2469 if (expect_false (!ev_is_active (w))) 3526 if (expect_false (!ev_is_active (w)))
2470 return; 3527 return;
2471 3528
… …
2473 3530
2474 wlist_del (&signals [w->signum - 1].head, (WL)w); 3531 wlist_del (&signals [w->signum - 1].head, (WL)w);
2475 ev_stop (EV_A_ (W)w); 3532 ev_stop (EV_A_ (W)w);
2476 3533
2477 if (!signals [w->signum - 1].head) 3534 if (!signals [w->signum - 1].head)
3535 {
3536#if EV_MULTIPLICITY
3537 signals [w->signum - 1].loop = 0; /* unattach from signal */
3538#endif
3539#if EV_USE_SIGNALFD
3540 if (sigfd >= 0)
3541 {
3542 sigset_t ss;
3543
3544 sigemptyset (&ss);
3545 sigaddset (&ss, w->signum);
3546 sigdelset (&sigfd_set, w->signum);
3547
3548 signalfd (sigfd, &sigfd_set, 0);
3549 sigprocmask (SIG_UNBLOCK, &ss, 0);
3550 }
3551 else
3552#endif
2478 signal (w->signum, SIG_DFL); 3553 signal (w->signum, SIG_DFL);
3554 }
2479 3555
2480 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2481} 3557}
3558
3559#endif
3560
3561#if EV_CHILD_ENABLE
2482 3562
2483void 3563void
2484ev_child_start (EV_P_ ev_child *w) 3564ev_child_start (EV_P_ ev_child *w) EV_THROW
2485{ 3565{
2486#if EV_MULTIPLICITY 3566#if EV_MULTIPLICITY
2487 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3567 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2488#endif 3568#endif
2489 if (expect_false (ev_is_active (w))) 3569 if (expect_false (ev_is_active (w)))
2490 return; 3570 return;
2491 3571
2492 EV_FREQUENT_CHECK; 3572 EV_FREQUENT_CHECK;
2493 3573
2494 ev_start (EV_A_ (W)w, 1); 3574 ev_start (EV_A_ (W)w, 1);
2495 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3575 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2496 3576
2497 EV_FREQUENT_CHECK; 3577 EV_FREQUENT_CHECK;
2498} 3578}
2499 3579
2500void 3580void
2501ev_child_stop (EV_P_ ev_child *w) 3581ev_child_stop (EV_P_ ev_child *w) EV_THROW
2502{ 3582{
2503 clear_pending (EV_A_ (W)w); 3583 clear_pending (EV_A_ (W)w);
2504 if (expect_false (!ev_is_active (w))) 3584 if (expect_false (!ev_is_active (w)))
2505 return; 3585 return;
2506 3586
2507 EV_FREQUENT_CHECK; 3587 EV_FREQUENT_CHECK;
2508 3588
2509 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3589 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2510 ev_stop (EV_A_ (W)w); 3590 ev_stop (EV_A_ (W)w);
2511 3591
2512 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2513} 3593}
3594
3595#endif
2514 3596
2515#if EV_STAT_ENABLE 3597#if EV_STAT_ENABLE
2516 3598
2517# ifdef _WIN32 3599# ifdef _WIN32
2518# undef lstat 3600# undef lstat
… …
2524#define MIN_STAT_INTERVAL 0.1074891 3606#define MIN_STAT_INTERVAL 0.1074891
2525 3607
2526static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3608static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2527 3609
2528#if EV_USE_INOTIFY 3610#if EV_USE_INOTIFY
2529# define EV_INOTIFY_BUFSIZE 8192 3611
3612/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3613# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2530 3614
2531static void noinline 3615static void noinline
2532infy_add (EV_P_ ev_stat *w) 3616infy_add (EV_P_ ev_stat *w)
2533{ 3617{
2534 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3618 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2535 3619
2536 if (w->wd < 0) 3620 if (w->wd >= 0)
3621 {
3622 struct statfs sfs;
3623
3624 /* now local changes will be tracked by inotify, but remote changes won't */
3625 /* unless the filesystem is known to be local, we therefore still poll */
3626 /* also do poll on <2.6.25, but with normal frequency */
3627
3628 if (!fs_2625)
3629 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3630 else if (!statfs (w->path, &sfs)
3631 && (sfs.f_type == 0x1373 /* devfs */
3632 || sfs.f_type == 0xEF53 /* ext2/3 */
3633 || sfs.f_type == 0x3153464a /* jfs */
3634 || sfs.f_type == 0x52654973 /* reiser3 */
3635 || sfs.f_type == 0x01021994 /* tempfs */
3636 || sfs.f_type == 0x58465342 /* xfs */))
3637 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3638 else
3639 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2537 { 3640 }
3641 else
3642 {
3643 /* can't use inotify, continue to stat */
2538 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3644 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2539 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2540 3645
2541 /* monitor some parent directory for speedup hints */ 3646 /* if path is not there, monitor some parent directory for speedup hints */
2542 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3647 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2543 /* but an efficiency issue only */ 3648 /* but an efficiency issue only */
2544 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3649 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2545 { 3650 {
2546 char path [4096]; 3651 char path [4096];
… …
2556 if (!pend || pend == path) 3661 if (!pend || pend == path)
2557 break; 3662 break;
2558 3663
2559 *pend = 0; 3664 *pend = 0;
2560 w->wd = inotify_add_watch (fs_fd, path, mask); 3665 w->wd = inotify_add_watch (fs_fd, path, mask);
2561 } 3666 }
2562 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3667 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2563 } 3668 }
2564 } 3669 }
2565 3670
2566 if (w->wd >= 0) 3671 if (w->wd >= 0)
2567 {
2568 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3672 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2569 3673
2570 /* now local changes will be tracked by inotify, but remote changes won't */ 3674 /* now re-arm timer, if required */
2571 /* unless the filesystem it known to be local, we therefore still poll */ 3675 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2572 /* also do poll on <2.6.25, but with normal frequency */
2573 struct statfs sfs;
2574
2575 if (fs_2625 && !statfs (w->path, &sfs))
2576 if (sfs.f_type == 0x1373 /* devfs */
2577 || sfs.f_type == 0xEF53 /* ext2/3 */
2578 || sfs.f_type == 0x3153464a /* jfs */
2579 || sfs.f_type == 0x52654973 /* reiser3 */
2580 || sfs.f_type == 0x01021994 /* tempfs */
2581 || sfs.f_type == 0x58465342 /* xfs */)
2582 return;
2583
2584 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2585 ev_timer_again (EV_A_ &w->timer); 3676 ev_timer_again (EV_A_ &w->timer);
2586 } 3677 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2587} 3678}
2588 3679
2589static void noinline 3680static void noinline
2590infy_del (EV_P_ ev_stat *w) 3681infy_del (EV_P_ ev_stat *w)
2591{ 3682{
… …
2594 3685
2595 if (wd < 0) 3686 if (wd < 0)
2596 return; 3687 return;
2597 3688
2598 w->wd = -2; 3689 w->wd = -2;
2599 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3690 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2600 wlist_del (&fs_hash [slot].head, (WL)w); 3691 wlist_del (&fs_hash [slot].head, (WL)w);
2601 3692
2602 /* remove this watcher, if others are watching it, they will rearm */ 3693 /* remove this watcher, if others are watching it, they will rearm */
2603 inotify_rm_watch (fs_fd, wd); 3694 inotify_rm_watch (fs_fd, wd);
2604} 3695}
… …
2606static void noinline 3697static void noinline
2607infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3698infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2608{ 3699{
2609 if (slot < 0) 3700 if (slot < 0)
2610 /* overflow, need to check for all hash slots */ 3701 /* overflow, need to check for all hash slots */
2611 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3702 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2612 infy_wd (EV_A_ slot, wd, ev); 3703 infy_wd (EV_A_ slot, wd, ev);
2613 else 3704 else
2614 { 3705 {
2615 WL w_; 3706 WL w_;
2616 3707
2617 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3708 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2618 { 3709 {
2619 ev_stat *w = (ev_stat *)w_; 3710 ev_stat *w = (ev_stat *)w_;
2620 w_ = w_->next; /* lets us remove this watcher and all before it */ 3711 w_ = w_->next; /* lets us remove this watcher and all before it */
2621 3712
2622 if (w->wd == wd || wd == -1) 3713 if (w->wd == wd || wd == -1)
2623 { 3714 {
2624 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3715 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2625 { 3716 {
2626 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3717 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2627 w->wd = -1; 3718 w->wd = -1;
2628 infy_add (EV_A_ w); /* re-add, no matter what */ 3719 infy_add (EV_A_ w); /* re-add, no matter what */
2629 } 3720 }
2630 3721
2631 stat_timer_cb (EV_A_ &w->timer, 0); 3722 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2636 3727
2637static void 3728static void
2638infy_cb (EV_P_ ev_io *w, int revents) 3729infy_cb (EV_P_ ev_io *w, int revents)
2639{ 3730{
2640 char buf [EV_INOTIFY_BUFSIZE]; 3731 char buf [EV_INOTIFY_BUFSIZE];
2641 struct inotify_event *ev = (struct inotify_event *)buf;
2642 int ofs; 3732 int ofs;
2643 int len = read (fs_fd, buf, sizeof (buf)); 3733 int len = read (fs_fd, buf, sizeof (buf));
2644 3734
2645 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3735 for (ofs = 0; ofs < len; )
3736 {
3737 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2646 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3738 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3739 ofs += sizeof (struct inotify_event) + ev->len;
3740 }
2647} 3741}
2648 3742
2649inline_size void 3743inline_size void ecb_cold
2650check_2625 (EV_P) 3744ev_check_2625 (EV_P)
2651{ 3745{
2652 /* kernels < 2.6.25 are borked 3746 /* kernels < 2.6.25 are borked
2653 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3747 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2654 */ 3748 */
2655 struct utsname buf; 3749 if (ev_linux_version () < 0x020619)
2656 int major, minor, micro;
2657
2658 if (uname (&buf))
2659 return; 3750 return;
2660 3751
2661 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2662 return;
2663
2664 if (major < 2
2665 || (major == 2 && minor < 6)
2666 || (major == 2 && minor == 6 && micro < 25))
2667 return;
2668
2669 fs_2625 = 1; 3752 fs_2625 = 1;
3753}
3754
3755inline_size int
3756infy_newfd (void)
3757{
3758#if defined IN_CLOEXEC && defined IN_NONBLOCK
3759 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3760 if (fd >= 0)
3761 return fd;
3762#endif
3763 return inotify_init ();
2670} 3764}
2671 3765
2672inline_size void 3766inline_size void
2673infy_init (EV_P) 3767infy_init (EV_P)
2674{ 3768{
2675 if (fs_fd != -2) 3769 if (fs_fd != -2)
2676 return; 3770 return;
2677 3771
2678 fs_fd = -1; 3772 fs_fd = -1;
2679 3773
2680 check_2625 (EV_A); 3774 ev_check_2625 (EV_A);
2681 3775
2682 fs_fd = inotify_init (); 3776 fs_fd = infy_newfd ();
2683 3777
2684 if (fs_fd >= 0) 3778 if (fs_fd >= 0)
2685 { 3779 {
3780 fd_intern (fs_fd);
2686 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3781 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2687 ev_set_priority (&fs_w, EV_MAXPRI); 3782 ev_set_priority (&fs_w, EV_MAXPRI);
2688 ev_io_start (EV_A_ &fs_w); 3783 ev_io_start (EV_A_ &fs_w);
3784 ev_unref (EV_A);
2689 } 3785 }
2690} 3786}
2691 3787
2692inline_size void 3788inline_size void
2693infy_fork (EV_P) 3789infy_fork (EV_P)
… …
2695 int slot; 3791 int slot;
2696 3792
2697 if (fs_fd < 0) 3793 if (fs_fd < 0)
2698 return; 3794 return;
2699 3795
3796 ev_ref (EV_A);
3797 ev_io_stop (EV_A_ &fs_w);
2700 close (fs_fd); 3798 close (fs_fd);
2701 fs_fd = inotify_init (); 3799 fs_fd = infy_newfd ();
2702 3800
3801 if (fs_fd >= 0)
3802 {
3803 fd_intern (fs_fd);
3804 ev_io_set (&fs_w, fs_fd, EV_READ);
3805 ev_io_start (EV_A_ &fs_w);
3806 ev_unref (EV_A);
3807 }
3808
2703 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3809 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2704 { 3810 {
2705 WL w_ = fs_hash [slot].head; 3811 WL w_ = fs_hash [slot].head;
2706 fs_hash [slot].head = 0; 3812 fs_hash [slot].head = 0;
2707 3813
2708 while (w_) 3814 while (w_)
… …
2713 w->wd = -1; 3819 w->wd = -1;
2714 3820
2715 if (fs_fd >= 0) 3821 if (fs_fd >= 0)
2716 infy_add (EV_A_ w); /* re-add, no matter what */ 3822 infy_add (EV_A_ w); /* re-add, no matter what */
2717 else 3823 else
3824 {
3825 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3826 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2718 ev_timer_again (EV_A_ &w->timer); 3827 ev_timer_again (EV_A_ &w->timer);
3828 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3829 }
2719 } 3830 }
2720 } 3831 }
2721} 3832}
2722 3833
2723#endif 3834#endif
… …
2727#else 3838#else
2728# define EV_LSTAT(p,b) lstat (p, b) 3839# define EV_LSTAT(p,b) lstat (p, b)
2729#endif 3840#endif
2730 3841
2731void 3842void
2732ev_stat_stat (EV_P_ ev_stat *w) 3843ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2733{ 3844{
2734 if (lstat (w->path, &w->attr) < 0) 3845 if (lstat (w->path, &w->attr) < 0)
2735 w->attr.st_nlink = 0; 3846 w->attr.st_nlink = 0;
2736 else if (!w->attr.st_nlink) 3847 else if (!w->attr.st_nlink)
2737 w->attr.st_nlink = 1; 3848 w->attr.st_nlink = 1;
… …
2740static void noinline 3851static void noinline
2741stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3852stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2742{ 3853{
2743 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3854 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2744 3855
2745 /* we copy this here each the time so that */ 3856 ev_statdata prev = w->attr;
2746 /* prev has the old value when the callback gets invoked */
2747 w->prev = w->attr;
2748 ev_stat_stat (EV_A_ w); 3857 ev_stat_stat (EV_A_ w);
2749 3858
2750 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3859 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2751 if ( 3860 if (
2752 w->prev.st_dev != w->attr.st_dev 3861 prev.st_dev != w->attr.st_dev
2753 || w->prev.st_ino != w->attr.st_ino 3862 || prev.st_ino != w->attr.st_ino
2754 || w->prev.st_mode != w->attr.st_mode 3863 || prev.st_mode != w->attr.st_mode
2755 || w->prev.st_nlink != w->attr.st_nlink 3864 || prev.st_nlink != w->attr.st_nlink
2756 || w->prev.st_uid != w->attr.st_uid 3865 || prev.st_uid != w->attr.st_uid
2757 || w->prev.st_gid != w->attr.st_gid 3866 || prev.st_gid != w->attr.st_gid
2758 || w->prev.st_rdev != w->attr.st_rdev 3867 || prev.st_rdev != w->attr.st_rdev
2759 || w->prev.st_size != w->attr.st_size 3868 || prev.st_size != w->attr.st_size
2760 || w->prev.st_atime != w->attr.st_atime 3869 || prev.st_atime != w->attr.st_atime
2761 || w->prev.st_mtime != w->attr.st_mtime 3870 || prev.st_mtime != w->attr.st_mtime
2762 || w->prev.st_ctime != w->attr.st_ctime 3871 || prev.st_ctime != w->attr.st_ctime
2763 ) { 3872 ) {
3873 /* we only update w->prev on actual differences */
3874 /* in case we test more often than invoke the callback, */
3875 /* to ensure that prev is always different to attr */
3876 w->prev = prev;
3877
2764 #if EV_USE_INOTIFY 3878 #if EV_USE_INOTIFY
2765 if (fs_fd >= 0) 3879 if (fs_fd >= 0)
2766 { 3880 {
2767 infy_del (EV_A_ w); 3881 infy_del (EV_A_ w);
2768 infy_add (EV_A_ w); 3882 infy_add (EV_A_ w);
… …
2773 ev_feed_event (EV_A_ w, EV_STAT); 3887 ev_feed_event (EV_A_ w, EV_STAT);
2774 } 3888 }
2775} 3889}
2776 3890
2777void 3891void
2778ev_stat_start (EV_P_ ev_stat *w) 3892ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2779{ 3893{
2780 if (expect_false (ev_is_active (w))) 3894 if (expect_false (ev_is_active (w)))
2781 return; 3895 return;
2782 3896
2783 ev_stat_stat (EV_A_ w); 3897 ev_stat_stat (EV_A_ w);
… …
2793 3907
2794 if (fs_fd >= 0) 3908 if (fs_fd >= 0)
2795 infy_add (EV_A_ w); 3909 infy_add (EV_A_ w);
2796 else 3910 else
2797#endif 3911#endif
3912 {
2798 ev_timer_again (EV_A_ &w->timer); 3913 ev_timer_again (EV_A_ &w->timer);
3914 ev_unref (EV_A);
3915 }
2799 3916
2800 ev_start (EV_A_ (W)w, 1); 3917 ev_start (EV_A_ (W)w, 1);
2801 3918
2802 EV_FREQUENT_CHECK; 3919 EV_FREQUENT_CHECK;
2803} 3920}
2804 3921
2805void 3922void
2806ev_stat_stop (EV_P_ ev_stat *w) 3923ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2807{ 3924{
2808 clear_pending (EV_A_ (W)w); 3925 clear_pending (EV_A_ (W)w);
2809 if (expect_false (!ev_is_active (w))) 3926 if (expect_false (!ev_is_active (w)))
2810 return; 3927 return;
2811 3928
2812 EV_FREQUENT_CHECK; 3929 EV_FREQUENT_CHECK;
2813 3930
2814#if EV_USE_INOTIFY 3931#if EV_USE_INOTIFY
2815 infy_del (EV_A_ w); 3932 infy_del (EV_A_ w);
2816#endif 3933#endif
3934
3935 if (ev_is_active (&w->timer))
3936 {
3937 ev_ref (EV_A);
2817 ev_timer_stop (EV_A_ &w->timer); 3938 ev_timer_stop (EV_A_ &w->timer);
3939 }
2818 3940
2819 ev_stop (EV_A_ (W)w); 3941 ev_stop (EV_A_ (W)w);
2820 3942
2821 EV_FREQUENT_CHECK; 3943 EV_FREQUENT_CHECK;
2822} 3944}
2823#endif 3945#endif
2824 3946
2825#if EV_IDLE_ENABLE 3947#if EV_IDLE_ENABLE
2826void 3948void
2827ev_idle_start (EV_P_ ev_idle *w) 3949ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2828{ 3950{
2829 if (expect_false (ev_is_active (w))) 3951 if (expect_false (ev_is_active (w)))
2830 return; 3952 return;
2831 3953
2832 pri_adjust (EV_A_ (W)w); 3954 pri_adjust (EV_A_ (W)w);
… …
2845 3967
2846 EV_FREQUENT_CHECK; 3968 EV_FREQUENT_CHECK;
2847} 3969}
2848 3970
2849void 3971void
2850ev_idle_stop (EV_P_ ev_idle *w) 3972ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2851{ 3973{
2852 clear_pending (EV_A_ (W)w); 3974 clear_pending (EV_A_ (W)w);
2853 if (expect_false (!ev_is_active (w))) 3975 if (expect_false (!ev_is_active (w)))
2854 return; 3976 return;
2855 3977
… …
2867 3989
2868 EV_FREQUENT_CHECK; 3990 EV_FREQUENT_CHECK;
2869} 3991}
2870#endif 3992#endif
2871 3993
3994#if EV_PREPARE_ENABLE
2872void 3995void
2873ev_prepare_start (EV_P_ ev_prepare *w) 3996ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2874{ 3997{
2875 if (expect_false (ev_is_active (w))) 3998 if (expect_false (ev_is_active (w)))
2876 return; 3999 return;
2877 4000
2878 EV_FREQUENT_CHECK; 4001 EV_FREQUENT_CHECK;
… …
2883 4006
2884 EV_FREQUENT_CHECK; 4007 EV_FREQUENT_CHECK;
2885} 4008}
2886 4009
2887void 4010void
2888ev_prepare_stop (EV_P_ ev_prepare *w) 4011ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2889{ 4012{
2890 clear_pending (EV_A_ (W)w); 4013 clear_pending (EV_A_ (W)w);
2891 if (expect_false (!ev_is_active (w))) 4014 if (expect_false (!ev_is_active (w)))
2892 return; 4015 return;
2893 4016
… …
2902 4025
2903 ev_stop (EV_A_ (W)w); 4026 ev_stop (EV_A_ (W)w);
2904 4027
2905 EV_FREQUENT_CHECK; 4028 EV_FREQUENT_CHECK;
2906} 4029}
4030#endif
2907 4031
4032#if EV_CHECK_ENABLE
2908void 4033void
2909ev_check_start (EV_P_ ev_check *w) 4034ev_check_start (EV_P_ ev_check *w) EV_THROW
2910{ 4035{
2911 if (expect_false (ev_is_active (w))) 4036 if (expect_false (ev_is_active (w)))
2912 return; 4037 return;
2913 4038
2914 EV_FREQUENT_CHECK; 4039 EV_FREQUENT_CHECK;
… …
2919 4044
2920 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2921} 4046}
2922 4047
2923void 4048void
2924ev_check_stop (EV_P_ ev_check *w) 4049ev_check_stop (EV_P_ ev_check *w) EV_THROW
2925{ 4050{
2926 clear_pending (EV_A_ (W)w); 4051 clear_pending (EV_A_ (W)w);
2927 if (expect_false (!ev_is_active (w))) 4052 if (expect_false (!ev_is_active (w)))
2928 return; 4053 return;
2929 4054
… …
2938 4063
2939 ev_stop (EV_A_ (W)w); 4064 ev_stop (EV_A_ (W)w);
2940 4065
2941 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
2942} 4067}
4068#endif
2943 4069
2944#if EV_EMBED_ENABLE 4070#if EV_EMBED_ENABLE
2945void noinline 4071void noinline
2946ev_embed_sweep (EV_P_ ev_embed *w) 4072ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2947{ 4073{
2948 ev_loop (w->other, EVLOOP_NONBLOCK); 4074 ev_run (w->other, EVRUN_NOWAIT);
2949} 4075}
2950 4076
2951static void 4077static void
2952embed_io_cb (EV_P_ ev_io *io, int revents) 4078embed_io_cb (EV_P_ ev_io *io, int revents)
2953{ 4079{
2954 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4080 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2955 4081
2956 if (ev_cb (w)) 4082 if (ev_cb (w))
2957 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4083 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2958 else 4084 else
2959 ev_loop (w->other, EVLOOP_NONBLOCK); 4085 ev_run (w->other, EVRUN_NOWAIT);
2960} 4086}
2961 4087
2962static void 4088static void
2963embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4089embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2964{ 4090{
2965 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4091 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2966 4092
2967 { 4093 {
2968 struct ev_loop *loop = w->other; 4094 EV_P = w->other;
2969 4095
2970 while (fdchangecnt) 4096 while (fdchangecnt)
2971 { 4097 {
2972 fd_reify (EV_A); 4098 fd_reify (EV_A);
2973 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4099 ev_run (EV_A_ EVRUN_NOWAIT);
2974 } 4100 }
2975 } 4101 }
2976} 4102}
2977 4103
2978static void 4104static void
… …
2981 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4107 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2982 4108
2983 ev_embed_stop (EV_A_ w); 4109 ev_embed_stop (EV_A_ w);
2984 4110
2985 { 4111 {
2986 struct ev_loop *loop = w->other; 4112 EV_P = w->other;
2987 4113
2988 ev_loop_fork (EV_A); 4114 ev_loop_fork (EV_A);
2989 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4115 ev_run (EV_A_ EVRUN_NOWAIT);
2990 } 4116 }
2991 4117
2992 ev_embed_start (EV_A_ w); 4118 ev_embed_start (EV_A_ w);
2993} 4119}
2994 4120
… …
2999 ev_idle_stop (EV_A_ idle); 4125 ev_idle_stop (EV_A_ idle);
3000} 4126}
3001#endif 4127#endif
3002 4128
3003void 4129void
3004ev_embed_start (EV_P_ ev_embed *w) 4130ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3005{ 4131{
3006 if (expect_false (ev_is_active (w))) 4132 if (expect_false (ev_is_active (w)))
3007 return; 4133 return;
3008 4134
3009 { 4135 {
3010 struct ev_loop *loop = w->other; 4136 EV_P = w->other;
3011 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4137 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3012 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4138 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3013 } 4139 }
3014 4140
3015 EV_FREQUENT_CHECK; 4141 EV_FREQUENT_CHECK;
… …
3030 4156
3031 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3032} 4158}
3033 4159
3034void 4160void
3035ev_embed_stop (EV_P_ ev_embed *w) 4161ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3036{ 4162{
3037 clear_pending (EV_A_ (W)w); 4163 clear_pending (EV_A_ (W)w);
3038 if (expect_false (!ev_is_active (w))) 4164 if (expect_false (!ev_is_active (w)))
3039 return; 4165 return;
3040 4166
… …
3042 4168
3043 ev_io_stop (EV_A_ &w->io); 4169 ev_io_stop (EV_A_ &w->io);
3044 ev_prepare_stop (EV_A_ &w->prepare); 4170 ev_prepare_stop (EV_A_ &w->prepare);
3045 ev_fork_stop (EV_A_ &w->fork); 4171 ev_fork_stop (EV_A_ &w->fork);
3046 4172
4173 ev_stop (EV_A_ (W)w);
4174
3047 EV_FREQUENT_CHECK; 4175 EV_FREQUENT_CHECK;
3048} 4176}
3049#endif 4177#endif
3050 4178
3051#if EV_FORK_ENABLE 4179#if EV_FORK_ENABLE
3052void 4180void
3053ev_fork_start (EV_P_ ev_fork *w) 4181ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3054{ 4182{
3055 if (expect_false (ev_is_active (w))) 4183 if (expect_false (ev_is_active (w)))
3056 return; 4184 return;
3057 4185
3058 EV_FREQUENT_CHECK; 4186 EV_FREQUENT_CHECK;
… …
3063 4191
3064 EV_FREQUENT_CHECK; 4192 EV_FREQUENT_CHECK;
3065} 4193}
3066 4194
3067void 4195void
3068ev_fork_stop (EV_P_ ev_fork *w) 4196ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3069{ 4197{
3070 clear_pending (EV_A_ (W)w); 4198 clear_pending (EV_A_ (W)w);
3071 if (expect_false (!ev_is_active (w))) 4199 if (expect_false (!ev_is_active (w)))
3072 return; 4200 return;
3073 4201
… …
3084 4212
3085 EV_FREQUENT_CHECK; 4213 EV_FREQUENT_CHECK;
3086} 4214}
3087#endif 4215#endif
3088 4216
4217#if EV_CLEANUP_ENABLE
4218void
4219ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4220{
4221 if (expect_false (ev_is_active (w)))
4222 return;
4223
4224 EV_FREQUENT_CHECK;
4225
4226 ev_start (EV_A_ (W)w, ++cleanupcnt);
4227 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4228 cleanups [cleanupcnt - 1] = w;
4229
4230 /* cleanup watchers should never keep a refcount on the loop */
4231 ev_unref (EV_A);
4232 EV_FREQUENT_CHECK;
4233}
4234
4235void
4236ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4237{
4238 clear_pending (EV_A_ (W)w);
4239 if (expect_false (!ev_is_active (w)))
4240 return;
4241
4242 EV_FREQUENT_CHECK;
4243 ev_ref (EV_A);
4244
4245 {
4246 int active = ev_active (w);
4247
4248 cleanups [active - 1] = cleanups [--cleanupcnt];
4249 ev_active (cleanups [active - 1]) = active;
4250 }
4251
4252 ev_stop (EV_A_ (W)w);
4253
4254 EV_FREQUENT_CHECK;
4255}
4256#endif
4257
3089#if EV_ASYNC_ENABLE 4258#if EV_ASYNC_ENABLE
3090void 4259void
3091ev_async_start (EV_P_ ev_async *w) 4260ev_async_start (EV_P_ ev_async *w) EV_THROW
3092{ 4261{
3093 if (expect_false (ev_is_active (w))) 4262 if (expect_false (ev_is_active (w)))
3094 return; 4263 return;
4264
4265 w->sent = 0;
3095 4266
3096 evpipe_init (EV_A); 4267 evpipe_init (EV_A);
3097 4268
3098 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
3099 4270
… …
3103 4274
3104 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
3105} 4276}
3106 4277
3107void 4278void
3108ev_async_stop (EV_P_ ev_async *w) 4279ev_async_stop (EV_P_ ev_async *w) EV_THROW
3109{ 4280{
3110 clear_pending (EV_A_ (W)w); 4281 clear_pending (EV_A_ (W)w);
3111 if (expect_false (!ev_is_active (w))) 4282 if (expect_false (!ev_is_active (w)))
3112 return; 4283 return;
3113 4284
… …
3124 4295
3125 EV_FREQUENT_CHECK; 4296 EV_FREQUENT_CHECK;
3126} 4297}
3127 4298
3128void 4299void
3129ev_async_send (EV_P_ ev_async *w) 4300ev_async_send (EV_P_ ev_async *w) EV_THROW
3130{ 4301{
3131 w->sent = 1; 4302 w->sent = 1;
3132 evpipe_write (EV_A_ &gotasync); 4303 evpipe_write (EV_A_ &async_pending);
3133} 4304}
3134#endif 4305#endif
3135 4306
3136/*****************************************************************************/ 4307/*****************************************************************************/
3137 4308
… …
3171 4342
3172 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4343 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3173} 4344}
3174 4345
3175void 4346void
3176ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4347ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3177{ 4348{
3178 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4349 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3179 4350
3180 if (expect_false (!once)) 4351 if (expect_false (!once))
3181 { 4352 {
3182 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4353 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3183 return; 4354 return;
3184 } 4355 }
3185 4356
3186 once->cb = cb; 4357 once->cb = cb;
3187 once->arg = arg; 4358 once->arg = arg;
… …
3201 } 4372 }
3202} 4373}
3203 4374
3204/*****************************************************************************/ 4375/*****************************************************************************/
3205 4376
3206#if 0 4377#if EV_WALK_ENABLE
3207void 4378void ecb_cold
3208ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4379ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3209{ 4380{
3210 int i, j; 4381 int i, j;
3211 ev_watcher_list *wl, *wn; 4382 ev_watcher_list *wl, *wn;
3212 4383
3213 if (types & (EV_IO | EV_EMBED)) 4384 if (types & (EV_IO | EV_EMBED))
… …
3227#if EV_USE_INOTIFY 4398#if EV_USE_INOTIFY
3228 if (ev_cb ((ev_io *)wl) == infy_cb) 4399 if (ev_cb ((ev_io *)wl) == infy_cb)
3229 ; 4400 ;
3230 else 4401 else
3231#endif 4402#endif
3232 if ((ev_io *)wl != &pipeev) 4403 if ((ev_io *)wl != &pipe_w)
3233 if (types & EV_IO) 4404 if (types & EV_IO)
3234 cb (EV_A_ EV_IO, wl); 4405 cb (EV_A_ EV_IO, wl);
3235 4406
3236 wl = wn; 4407 wl = wn;
3237 } 4408 }
… …
3256 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4427 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3257#endif 4428#endif
3258 4429
3259#if EV_IDLE_ENABLE 4430#if EV_IDLE_ENABLE
3260 if (types & EV_IDLE) 4431 if (types & EV_IDLE)
3261 for (j = NUMPRI; i--; ) 4432 for (j = NUMPRI; j--; )
3262 for (i = idlecnt [j]; i--; ) 4433 for (i = idlecnt [j]; i--; )
3263 cb (EV_A_ EV_IDLE, idles [j][i]); 4434 cb (EV_A_ EV_IDLE, idles [j][i]);
3264#endif 4435#endif
3265 4436
3266#if EV_FORK_ENABLE 4437#if EV_FORK_ENABLE
… …
3274 if (types & EV_ASYNC) 4445 if (types & EV_ASYNC)
3275 for (i = asynccnt; i--; ) 4446 for (i = asynccnt; i--; )
3276 cb (EV_A_ EV_ASYNC, asyncs [i]); 4447 cb (EV_A_ EV_ASYNC, asyncs [i]);
3277#endif 4448#endif
3278 4449
4450#if EV_PREPARE_ENABLE
3279 if (types & EV_PREPARE) 4451 if (types & EV_PREPARE)
3280 for (i = preparecnt; i--; ) 4452 for (i = preparecnt; i--; )
3281#if EV_EMBED_ENABLE 4453# if EV_EMBED_ENABLE
3282 if (ev_cb (prepares [i]) != embed_prepare_cb) 4454 if (ev_cb (prepares [i]) != embed_prepare_cb)
3283#endif 4455# endif
3284 cb (EV_A_ EV_PREPARE, prepares [i]); 4456 cb (EV_A_ EV_PREPARE, prepares [i]);
4457#endif
3285 4458
4459#if EV_CHECK_ENABLE
3286 if (types & EV_CHECK) 4460 if (types & EV_CHECK)
3287 for (i = checkcnt; i--; ) 4461 for (i = checkcnt; i--; )
3288 cb (EV_A_ EV_CHECK, checks [i]); 4462 cb (EV_A_ EV_CHECK, checks [i]);
4463#endif
3289 4464
4465#if EV_SIGNAL_ENABLE
3290 if (types & EV_SIGNAL) 4466 if (types & EV_SIGNAL)
3291 for (i = 0; i < signalmax; ++i) 4467 for (i = 0; i < EV_NSIG - 1; ++i)
3292 for (wl = signals [i].head; wl; ) 4468 for (wl = signals [i].head; wl; )
3293 { 4469 {
3294 wn = wl->next; 4470 wn = wl->next;
3295 cb (EV_A_ EV_SIGNAL, wl); 4471 cb (EV_A_ EV_SIGNAL, wl);
3296 wl = wn; 4472 wl = wn;
3297 } 4473 }
4474#endif
3298 4475
4476#if EV_CHILD_ENABLE
3299 if (types & EV_CHILD) 4477 if (types & EV_CHILD)
3300 for (i = EV_PID_HASHSIZE; i--; ) 4478 for (i = (EV_PID_HASHSIZE); i--; )
3301 for (wl = childs [i]; wl; ) 4479 for (wl = childs [i]; wl; )
3302 { 4480 {
3303 wn = wl->next; 4481 wn = wl->next;
3304 cb (EV_A_ EV_CHILD, wl); 4482 cb (EV_A_ EV_CHILD, wl);
3305 wl = wn; 4483 wl = wn;
3306 } 4484 }
4485#endif
3307/* EV_STAT 0x00001000 /* stat data changed */ 4486/* EV_STAT 0x00001000 /* stat data changed */
3308/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4487/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3309} 4488}
3310#endif 4489#endif
3311 4490
3312#if EV_MULTIPLICITY 4491#if EV_MULTIPLICITY
3313 #include "ev_wrap.h" 4492 #include "ev_wrap.h"
3314#endif 4493#endif
3315 4494
3316#ifdef __cplusplus
3317}
3318#endif
3319

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> Changed lines