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Comparing libev/ev.c (file contents):
Revision 1.291 by root, Mon Jun 29 04:44:18 2009 UTC vs.
Revision 1.419 by root, Thu Apr 12 04:10:15 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
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# 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
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# 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
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# 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
166#endif 197#endif
167 198
168#ifndef _WIN32 199#ifndef _WIN32
169# include <sys/time.h> 200# include <sys/time.h>
170# include <sys/wait.h> 201# include <sys/wait.h>
… …
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
175# include <windows.h> 206# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
178# endif 209# endif
210# undef EV_AVOID_STDIO
179#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
180 220
181/* 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
182 254
183#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 258# else
187# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
188# endif 260# endif
189#endif 261#endif
190 262
191#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 266# else
195# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
196# endif 268# endif
197#endif 269#endif
198 270
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 273#endif
202 274
203#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 278# else
207# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
208# endif 280# endif
209#endif 281#endif
210 282
211#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 285#endif
214 286
215#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
216# ifdef _WIN32 288# ifdef _WIN32
217# define EV_USE_POLL 0 289# define EV_USE_POLL 0
218# else 290# else
219# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 292# endif
221#endif 293#endif
222 294
223#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 298# else
227# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
228# endif 300# endif
229#endif 301#endif
230 302
… …
236# define EV_USE_PORT 0 308# define EV_USE_PORT 0
237#endif 309#endif
238 310
239#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 314# else
243# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
244# endif 316# endif
245#endif 317#endif
246 318
247#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 321#endif
254 322
255#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 325#endif
262 326
263#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 330# else
267# 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
268# endif 340# endif
269#endif 341#endif
270 342
271#if 0 /* debugging */ 343#if 0 /* debugging */
272# define EV_VERIFY 3 344# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
275#endif 347#endif
276 348
277#ifndef EV_VERIFY 349#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 351#endif
280 352
281#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 355#endif
284 356
285#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 359#endif
288 360
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 362/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 363#if EV_USE_CLOCK_SYSCALL
… …
300# endif 372# endif
301#endif 373#endif
302 374
303/* 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 */
304 376
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
382
305#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
308#endif 386#endif
309 387
… …
316# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
318#endif 396#endif
319 397
320#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 401# include <sys/select.h>
323# endif 402# endif
324#endif 403#endif
325 404
326#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 406# include <sys/statfs.h>
329# include <sys/inotify.h> 407# include <sys/inotify.h>
330/* 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 */
331# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
339#endif 417#endif
340 418
341#if EV_USE_EVENTFD 419#if EV_USE_EVENTFD
342/* 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 */
343# include <stdint.h> 421# include <stdint.h>
344# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
345extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
346# endif 424# endif
347int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 426# ifdef O_CLOEXEC
349} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
350# 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};
351#endif 455#endif
352 456
353/**/ 457/**/
354 458
355#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 461#else
358# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
359#endif 463#endif
360 464
361/* 465/*
362 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 468 */
369#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 */
370 471
371#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) */
372#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) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 474
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;
375#if __GNUC__ >= 4 519 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
377# 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
378#else 526#else
379# define expect(expr,value) (expr) 527 #include <inttypes.h>
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# 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)))
384#endif 542 #endif
543#endif
385 544
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. */
386#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#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
388#define inline_size static inline 960#define inline_size ecb_inline
389 961
390#if EV_MINIMAL 962#if EV_FEATURE_CODE
963# define inline_speed ecb_inline
964#else
391# 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)
392#else 972#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 973# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
974#endif
398 975
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 976#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 977#define EMPTY2(a,b) /* used to suppress some warnings */
401 978
402typedef ev_watcher *W; 979typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 983#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 984#define ev_at(w) ((WT)(w))->at
408 985
409#if EV_USE_REALTIME 986#if EV_USE_REALTIME
410/* 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 */
411/* giving it a reasonably high chance of working on typical architetcures */ 988/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 989static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 990#endif
414 991
415#if EV_USE_MONOTONIC 992#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 993static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 994#endif
418 995
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
419#ifdef _WIN32 1006#ifdef _WIN32
420# include "ev_win32.c" 1007# include "ev_win32.c"
421#endif 1008#endif
422 1009
423/*****************************************************************************/ 1010/*****************************************************************************/
424 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
425static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg);
426 1111
427void 1112void ecb_cold
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg))
429{ 1114{
430 syserr_cb = cb; 1115 syserr_cb = cb;
431} 1116}
432 1117
433static void noinline 1118static void noinline ecb_cold
434ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
435{ 1120{
436 if (!msg) 1121 if (!msg)
437 msg = "(libev) system error"; 1122 msg = "(libev) system error";
438 1123
439 if (syserr_cb) 1124 if (syserr_cb)
440 syserr_cb (msg); 1125 syserr_cb (msg);
441 else 1126 else
442 { 1127 {
1128#if EV_AVOID_STDIO
1129 ev_printerr (msg);
1130 ev_printerr (": ");
1131 ev_printerr (strerror (errno));
1132 ev_printerr ("\n");
1133#else
443 perror (msg); 1134 perror (msg);
1135#endif
444 abort (); 1136 abort ();
445 } 1137 }
446} 1138}
447 1139
448static void * 1140static void *
449ev_realloc_emul (void *ptr, long size) 1141ev_realloc_emul (void *ptr, long size)
450{ 1142{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
451 /* some systems, notably openbsd and darwin, fail to properly 1146 /* some systems, notably openbsd and darwin, fail to properly
452 * 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
453 * the single unix specification, so work around them here. 1148 * the single unix specification, so work around them here.
454 */ 1149 */
455 1150
456 if (size) 1151 if (size)
457 return realloc (ptr, size); 1152 return realloc (ptr, size);
458 1153
459 free (ptr); 1154 free (ptr);
460 return 0; 1155 return 0;
1156#endif
461} 1157}
462 1158
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
464 1160
465void 1161void ecb_cold
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size))
467{ 1163{
468 alloc = cb; 1164 alloc = cb;
469} 1165}
470 1166
… …
473{ 1169{
474 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
475 1171
476 if (!ptr && size) 1172 if (!ptr && size)
477 { 1173 {
1174#if EV_AVOID_STDIO
1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1176#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1178#endif
479 abort (); 1179 abort ();
480 } 1180 }
481 1181
482 return ptr; 1182 return ptr;
483} 1183}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1185#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1186#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1187
488/*****************************************************************************/ 1188/*****************************************************************************/
489 1189
1190/* set in reify when reification needed */
1191#define EV_ANFD_REIFY 1
1192
490/* file descriptor info structure */ 1193/* file descriptor info structure */
491typedef struct 1194typedef struct
492{ 1195{
493 WL head; 1196 WL head;
494 unsigned char events; /* the events watched for */ 1197 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1198 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 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 */
497 unsigned char unused; 1200 unsigned char unused;
498#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1202 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1203#endif
501#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1205 SOCKET handle;
1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
503#endif 1209#endif
504} ANFD; 1210} ANFD;
505 1211
506/* stores the pending event set for a given watcher */ 1212/* stores the pending event set for a given watcher */
507typedef struct 1213typedef struct
… …
549 #undef VAR 1255 #undef VAR
550 }; 1256 };
551 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
552 1258
553 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
554 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 */
555 1261
556#else 1262#else
557 1263
558 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 */
559 #define VAR(name,decl) static decl; 1265 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1266 #include "ev_vars.h"
561 #undef VAR 1267 #undef VAR
562 1268
563 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
564 1270
565#endif 1271#endif
566 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
567/*****************************************************************************/ 1285/*****************************************************************************/
568 1286
1287#ifndef EV_HAVE_EV_TIME
569ev_tstamp 1288ev_tstamp
570ev_time (void) 1289ev_time (void)
571{ 1290{
572#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
573 if (expect_true (have_realtime)) 1292 if (expect_true (have_realtime))
… …
580 1299
581 struct timeval tv; 1300 struct timeval tv;
582 gettimeofday (&tv, 0); 1301 gettimeofday (&tv, 0);
583 return tv.tv_sec + tv.tv_usec * 1e-6; 1302 return tv.tv_sec + tv.tv_usec * 1e-6;
584} 1303}
1304#endif
585 1305
586inline_size ev_tstamp 1306inline_size ev_tstamp
587get_clock (void) 1307get_clock (void)
588{ 1308{
589#if EV_USE_MONOTONIC 1309#if EV_USE_MONOTONIC
… …
612 if (delay > 0.) 1332 if (delay > 0.)
613 { 1333 {
614#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
615 struct timespec ts; 1335 struct timespec ts;
616 1336
617 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
618 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
619
620 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
621#elif defined(_WIN32) 1339#elif defined _WIN32
622 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
623#else 1341#else
624 struct timeval tv; 1342 struct timeval tv;
625 1343
626 tv.tv_sec = (time_t)delay;
627 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
628
629 /* 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 */
630 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1345 /* something not guaranteed by newer posix versions, but guaranteed */
631 /* by older ones */ 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
632 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
633#endif 1349#endif
634 } 1350 }
635} 1351}
636 1352
637/*****************************************************************************/ 1353/*****************************************************************************/
638 1354
639#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 */
640 1356
641/* find a suitable new size for the given array, */ 1357/* find a suitable new size for the given array, */
642/* hopefully by rounding to a ncie-to-malloc size */ 1358/* hopefully by rounding to a nice-to-malloc size */
643inline_size int 1359inline_size int
644array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
645{ 1361{
646 int ncur = cur + 1; 1362 int ncur = cur + 1;
647 1363
648 do 1364 do
649 ncur <<= 1; 1365 ncur <<= 1;
650 while (cnt > ncur); 1366 while (cnt > ncur);
651 1367
652 /* 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 */
653 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
654 { 1370 {
655 ncur *= elem; 1371 ncur *= elem;
656 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);
657 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
659 } 1375 }
660 1376
661 return ncur; 1377 return ncur;
662} 1378}
663 1379
664static noinline void * 1380static void * noinline ecb_cold
665array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
666{ 1382{
667 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
668 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
669} 1385}
… …
672 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
673 1389
674#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
675 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
676 { \ 1392 { \
677 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
678 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
679 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
680 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
681 } 1397 }
682 1398
… …
743} 1459}
744 1460
745/*****************************************************************************/ 1461/*****************************************************************************/
746 1462
747inline_speed void 1463inline_speed void
748fd_event (EV_P_ int fd, int revents) 1464fd_event_nocheck (EV_P_ int fd, int revents)
749{ 1465{
750 ANFD *anfd = anfds + fd; 1466 ANFD *anfd = anfds + fd;
751 ev_io *w; 1467 ev_io *w;
752 1468
753 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)
… …
757 if (ev) 1473 if (ev)
758 ev_feed_event (EV_A_ (W)w, ev); 1474 ev_feed_event (EV_A_ (W)w, ev);
759 } 1475 }
760} 1476}
761 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
762void 1489void
763ev_feed_fd_event (EV_P_ int fd, int revents) 1490ev_feed_fd_event (EV_P_ int fd, int revents)
764{ 1491{
765 if (fd >= 0 && fd < anfdmax) 1492 if (fd >= 0 && fd < anfdmax)
766 fd_event (EV_A_ fd, revents); 1493 fd_event_nocheck (EV_A_ fd, revents);
767} 1494}
768 1495
769/* make sure the external fd watch events are in-sync */ 1496/* make sure the external fd watch events are in-sync */
770/* with the kernel/libev internal state */ 1497/* with the kernel/libev internal state */
771inline_size void 1498inline_size void
772fd_reify (EV_P) 1499fd_reify (EV_P)
773{ 1500{
774 int i; 1501 int i;
775 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
1527
776 for (i = 0; i < fdchangecnt; ++i) 1528 for (i = 0; i < fdchangecnt; ++i)
777 { 1529 {
778 int fd = fdchanges [i]; 1530 int fd = fdchanges [i];
779 ANFD *anfd = anfds + fd; 1531 ANFD *anfd = anfds + fd;
780 ev_io *w; 1532 ev_io *w;
781 1533
782 unsigned char events = 0; 1534 unsigned char o_events = anfd->events;
1535 unsigned char o_reify = anfd->reify;
783 1536
784 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1537 anfd->reify = 0;
785 events |= (unsigned char)w->events;
786 1538
787#if EV_SELECT_IS_WINSOCKET 1539 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
788 if (events)
789 { 1540 {
790 unsigned long arg; 1541 anfd->events = 0;
791 #ifdef EV_FD_TO_WIN32_HANDLE 1542
792 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1543 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
793 #else 1544 anfd->events |= (unsigned char)w->events;
794 anfd->handle = _get_osfhandle (fd); 1545
795 #endif 1546 if (o_events != anfd->events)
796 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1547 o_reify = EV__IOFDSET; /* actually |= */
797 } 1548 }
798#endif
799 1549
800 { 1550 if (o_reify & EV__IOFDSET)
801 unsigned char o_events = anfd->events;
802 unsigned char o_reify = anfd->reify;
803
804 anfd->reify = 0;
805 anfd->events = events;
806
807 if (o_events != events || o_reify & EV__IOFDSET)
808 backend_modify (EV_A_ fd, o_events, events); 1551 backend_modify (EV_A_ fd, o_events, anfd->events);
809 }
810 } 1552 }
811 1553
812 fdchangecnt = 0; 1554 fdchangecnt = 0;
813} 1555}
814 1556
… …
826 fdchanges [fdchangecnt - 1] = fd; 1568 fdchanges [fdchangecnt - 1] = fd;
827 } 1569 }
828} 1570}
829 1571
830/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1572/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
831inline_speed void 1573inline_speed void ecb_cold
832fd_kill (EV_P_ int fd) 1574fd_kill (EV_P_ int fd)
833{ 1575{
834 ev_io *w; 1576 ev_io *w;
835 1577
836 while ((w = (ev_io *)anfds [fd].head)) 1578 while ((w = (ev_io *)anfds [fd].head))
… …
838 ev_io_stop (EV_A_ w); 1580 ev_io_stop (EV_A_ w);
839 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);
840 } 1582 }
841} 1583}
842 1584
843/* check whether the given fd is atcually valid, for error recovery */ 1585/* check whether the given fd is actually valid, for error recovery */
844inline_size int 1586inline_size int ecb_cold
845fd_valid (int fd) 1587fd_valid (int fd)
846{ 1588{
847#ifdef _WIN32 1589#ifdef _WIN32
848 return _get_osfhandle (fd) != -1; 1590 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
849#else 1591#else
850 return fcntl (fd, F_GETFD) != -1; 1592 return fcntl (fd, F_GETFD) != -1;
851#endif 1593#endif
852} 1594}
853 1595
854/* called on EBADF to verify fds */ 1596/* called on EBADF to verify fds */
855static void noinline 1597static void noinline ecb_cold
856fd_ebadf (EV_P) 1598fd_ebadf (EV_P)
857{ 1599{
858 int fd; 1600 int fd;
859 1601
860 for (fd = 0; fd < anfdmax; ++fd) 1602 for (fd = 0; fd < anfdmax; ++fd)
… …
862 if (!fd_valid (fd) && errno == EBADF) 1604 if (!fd_valid (fd) && errno == EBADF)
863 fd_kill (EV_A_ fd); 1605 fd_kill (EV_A_ fd);
864} 1606}
865 1607
866/* 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 */
867static void noinline 1609static void noinline ecb_cold
868fd_enomem (EV_P) 1610fd_enomem (EV_P)
869{ 1611{
870 int fd; 1612 int fd;
871 1613
872 for (fd = anfdmax; fd--; ) 1614 for (fd = anfdmax; fd--; )
873 if (anfds [fd].events) 1615 if (anfds [fd].events)
874 { 1616 {
875 fd_kill (EV_A_ fd); 1617 fd_kill (EV_A_ fd);
876 return; 1618 break;
877 } 1619 }
878} 1620}
879 1621
880/* 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 */
881static void noinline 1623static void noinline
… …
886 for (fd = 0; fd < anfdmax; ++fd) 1628 for (fd = 0; fd < anfdmax; ++fd)
887 if (anfds [fd].events) 1629 if (anfds [fd].events)
888 { 1630 {
889 anfds [fd].events = 0; 1631 anfds [fd].events = 0;
890 anfds [fd].emask = 0; 1632 anfds [fd].emask = 0;
891 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1633 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
892 } 1634 }
893} 1635}
894 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
895/*****************************************************************************/ 1651/*****************************************************************************/
896 1652
897/* 1653/*
898 * 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
899 * 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
900 * the branching factor of the d-tree. 1656 * the branching factor of the d-tree.
901 */ 1657 */
902 1658
903/* 1659/*
… …
971 1727
972 for (;;) 1728 for (;;)
973 { 1729 {
974 int c = k << 1; 1730 int c = k << 1;
975 1731
976 if (c > N + HEAP0 - 1) 1732 if (c >= N + HEAP0)
977 break; 1733 break;
978 1734
979 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])
980 ? 1 : 0; 1736 ? 1 : 0;
981 1737
… …
1017 1773
1018/* move an element suitably so it is in a correct place */ 1774/* move an element suitably so it is in a correct place */
1019inline_size void 1775inline_size void
1020adjustheap (ANHE *heap, int N, int k) 1776adjustheap (ANHE *heap, int N, int k)
1021{ 1777{
1022 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)]))
1023 upheap (heap, k); 1779 upheap (heap, k);
1024 else 1780 else
1025 downheap (heap, N, k); 1781 downheap (heap, N, k);
1026} 1782}
1027 1783
… …
1040/*****************************************************************************/ 1796/*****************************************************************************/
1041 1797
1042/* associate signal watchers to a signal signal */ 1798/* associate signal watchers to a signal signal */
1043typedef struct 1799typedef struct
1044{ 1800{
1801 EV_ATOMIC_T pending;
1802#if EV_MULTIPLICITY
1803 EV_P;
1804#endif
1045 WL head; 1805 WL head;
1046 EV_ATOMIC_T gotsig;
1047} ANSIG; 1806} ANSIG;
1048 1807
1049static ANSIG *signals; 1808static ANSIG signals [EV_NSIG - 1];
1050static int signalmax;
1051
1052static EV_ATOMIC_T gotsig;
1053 1809
1054/*****************************************************************************/ 1810/*****************************************************************************/
1055 1811
1056/* used to prepare libev internal fd's */ 1812#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1057/* this is not fork-safe */
1058inline_speed void
1059fd_intern (int fd)
1060{
1061#ifdef _WIN32
1062 unsigned long arg = 1;
1063 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1064#else
1065 fcntl (fd, F_SETFD, FD_CLOEXEC);
1066 fcntl (fd, F_SETFL, O_NONBLOCK);
1067#endif
1068}
1069 1813
1070static void noinline 1814static void noinline ecb_cold
1071evpipe_init (EV_P) 1815evpipe_init (EV_P)
1072{ 1816{
1073 if (!ev_is_active (&pipe_w)) 1817 if (!ev_is_active (&pipe_w))
1074 { 1818 {
1075#if EV_USE_EVENTFD 1819# if EV_USE_EVENTFD
1820 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1821 if (evfd < 0 && errno == EINVAL)
1076 if ((evfd = eventfd (0, 0)) >= 0) 1822 evfd = eventfd (0, 0);
1823
1824 if (evfd >= 0)
1077 { 1825 {
1078 evpipe [0] = -1; 1826 evpipe [0] = -1;
1079 fd_intern (evfd); 1827 fd_intern (evfd); /* doing it twice doesn't hurt */
1080 ev_io_set (&pipe_w, evfd, EV_READ); 1828 ev_io_set (&pipe_w, evfd, EV_READ);
1081 } 1829 }
1082 else 1830 else
1083#endif 1831# endif
1084 { 1832 {
1085 while (pipe (evpipe)) 1833 while (pipe (evpipe))
1086 ev_syserr ("(libev) error creating signal/async pipe"); 1834 ev_syserr ("(libev) error creating signal/async pipe");
1087 1835
1088 fd_intern (evpipe [0]); 1836 fd_intern (evpipe [0]);
… …
1093 ev_io_start (EV_A_ &pipe_w); 1841 ev_io_start (EV_A_ &pipe_w);
1094 ev_unref (EV_A); /* watcher should not keep loop alive */ 1842 ev_unref (EV_A); /* watcher should not keep loop alive */
1095 } 1843 }
1096} 1844}
1097 1845
1098inline_size void 1846inline_speed void
1099evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1847evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1100{ 1848{
1101 if (!*flag) 1849 if (expect_true (*flag))
1850 return;
1851
1852 *flag = 1;
1853
1854 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1855
1856 pipe_write_skipped = 1;
1857
1858 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1859
1860 if (pipe_write_wanted)
1102 { 1861 {
1862 int old_errno;
1863
1864 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1865
1103 int old_errno = errno; /* save errno because write might clobber it */ 1866 old_errno = errno; /* save errno because write will clobber it */
1104
1105 *flag = 1;
1106 1867
1107#if EV_USE_EVENTFD 1868#if EV_USE_EVENTFD
1108 if (evfd >= 0) 1869 if (evfd >= 0)
1109 { 1870 {
1110 uint64_t counter = 1; 1871 uint64_t counter = 1;
1111 write (evfd, &counter, sizeof (uint64_t)); 1872 write (evfd, &counter, sizeof (uint64_t));
1112 } 1873 }
1113 else 1874 else
1114#endif 1875#endif
1876 {
1877 /* win32 people keep sending patches that change this write() to send() */
1878 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1879 /* so when you think this write should be a send instead, please find out */
1880 /* where your send() is from - it's definitely not the microsoft send, and */
1881 /* tell me. thank you. */
1882 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1883 /* check the ev documentation on how to use this flag */
1115 write (evpipe [1], &old_errno, 1); 1884 write (evpipe [1], &(evpipe [1]), 1);
1885 }
1116 1886
1117 errno = old_errno; 1887 errno = old_errno;
1118 } 1888 }
1119} 1889}
1120 1890
1121/* called whenever the libev signal pipe */ 1891/* called whenever the libev signal pipe */
1122/* got some events (signal, async) */ 1892/* got some events (signal, async) */
1123static void 1893static void
1124pipecb (EV_P_ ev_io *iow, int revents) 1894pipecb (EV_P_ ev_io *iow, int revents)
1125{ 1895{
1896 int i;
1897
1898 if (revents & EV_READ)
1899 {
1126#if EV_USE_EVENTFD 1900#if EV_USE_EVENTFD
1127 if (evfd >= 0) 1901 if (evfd >= 0)
1128 { 1902 {
1129 uint64_t counter; 1903 uint64_t counter;
1130 read (evfd, &counter, sizeof (uint64_t)); 1904 read (evfd, &counter, sizeof (uint64_t));
1131 } 1905 }
1132 else 1906 else
1133#endif 1907#endif
1134 { 1908 {
1135 char dummy; 1909 char dummy;
1910 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1136 read (evpipe [0], &dummy, 1); 1911 read (evpipe [0], &dummy, 1);
1912 }
1913 }
1914
1915 pipe_write_skipped = 0;
1916
1917#if EV_SIGNAL_ENABLE
1918 if (sig_pending)
1137 } 1919 {
1920 sig_pending = 0;
1138 1921
1139 if (gotsig && ev_is_default_loop (EV_A)) 1922 for (i = EV_NSIG - 1; i--; )
1140 { 1923 if (expect_false (signals [i].pending))
1141 int signum;
1142 gotsig = 0;
1143
1144 for (signum = signalmax; signum--; )
1145 if (signals [signum].gotsig)
1146 ev_feed_signal_event (EV_A_ signum + 1); 1924 ev_feed_signal_event (EV_A_ i + 1);
1147 } 1925 }
1926#endif
1148 1927
1149#if EV_ASYNC_ENABLE 1928#if EV_ASYNC_ENABLE
1150 if (gotasync) 1929 if (async_pending)
1151 { 1930 {
1152 int i; 1931 async_pending = 0;
1153 gotasync = 0;
1154 1932
1155 for (i = asynccnt; i--; ) 1933 for (i = asynccnt; i--; )
1156 if (asyncs [i]->sent) 1934 if (asyncs [i]->sent)
1157 { 1935 {
1158 asyncs [i]->sent = 0; 1936 asyncs [i]->sent = 0;
… …
1162#endif 1940#endif
1163} 1941}
1164 1942
1165/*****************************************************************************/ 1943/*****************************************************************************/
1166 1944
1945void
1946ev_feed_signal (int signum)
1947{
1948#if EV_MULTIPLICITY
1949 EV_P = signals [signum - 1].loop;
1950
1951 if (!EV_A)
1952 return;
1953#endif
1954
1955 if (!ev_active (&pipe_w))
1956 return;
1957
1958 signals [signum - 1].pending = 1;
1959 evpipe_write (EV_A_ &sig_pending);
1960}
1961
1167static void 1962static void
1168ev_sighandler (int signum) 1963ev_sighandler (int signum)
1169{ 1964{
1170#if EV_MULTIPLICITY
1171 struct ev_loop *loop = &default_loop_struct;
1172#endif
1173
1174#if _WIN32 1965#ifdef _WIN32
1175 signal (signum, ev_sighandler); 1966 signal (signum, ev_sighandler);
1176#endif 1967#endif
1177 1968
1178 signals [signum - 1].gotsig = 1; 1969 ev_feed_signal (signum);
1179 evpipe_write (EV_A_ &gotsig);
1180} 1970}
1181 1971
1182void noinline 1972void noinline
1183ev_feed_signal_event (EV_P_ int signum) 1973ev_feed_signal_event (EV_P_ int signum)
1184{ 1974{
1185 WL w; 1975 WL w;
1186 1976
1977 if (expect_false (signum <= 0 || signum > EV_NSIG))
1978 return;
1979
1980 --signum;
1981
1187#if EV_MULTIPLICITY 1982#if EV_MULTIPLICITY
1188 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1983 /* it is permissible to try to feed a signal to the wrong loop */
1189#endif 1984 /* or, likely more useful, feeding a signal nobody is waiting for */
1190 1985
1191 --signum; 1986 if (expect_false (signals [signum].loop != EV_A))
1192
1193 if (signum < 0 || signum >= signalmax)
1194 return; 1987 return;
1988#endif
1195 1989
1196 signals [signum].gotsig = 0; 1990 signals [signum].pending = 0;
1197 1991
1198 for (w = signals [signum].head; w; w = w->next) 1992 for (w = signals [signum].head; w; w = w->next)
1199 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1993 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1200} 1994}
1201 1995
1996#if EV_USE_SIGNALFD
1997static void
1998sigfdcb (EV_P_ ev_io *iow, int revents)
1999{
2000 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2001
2002 for (;;)
2003 {
2004 ssize_t res = read (sigfd, si, sizeof (si));
2005
2006 /* not ISO-C, as res might be -1, but works with SuS */
2007 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2008 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2009
2010 if (res < (ssize_t)sizeof (si))
2011 break;
2012 }
2013}
2014#endif
2015
2016#endif
2017
1202/*****************************************************************************/ 2018/*****************************************************************************/
1203 2019
2020#if EV_CHILD_ENABLE
1204static WL childs [EV_PID_HASHSIZE]; 2021static WL childs [EV_PID_HASHSIZE];
1205
1206#ifndef _WIN32
1207 2022
1208static ev_signal childev; 2023static ev_signal childev;
1209 2024
1210#ifndef WIFCONTINUED 2025#ifndef WIFCONTINUED
1211# define WIFCONTINUED(status) 0 2026# define WIFCONTINUED(status) 0
… …
1216child_reap (EV_P_ int chain, int pid, int status) 2031child_reap (EV_P_ int chain, int pid, int status)
1217{ 2032{
1218 ev_child *w; 2033 ev_child *w;
1219 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2034 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1220 2035
1221 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2036 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1222 { 2037 {
1223 if ((w->pid == pid || !w->pid) 2038 if ((w->pid == pid || !w->pid)
1224 && (!traced || (w->flags & 1))) 2039 && (!traced || (w->flags & 1)))
1225 { 2040 {
1226 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2041 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1251 /* make sure we are called again until all children have been reaped */ 2066 /* make sure we are called again until all children have been reaped */
1252 /* we need to do it this way so that the callback gets called before we continue */ 2067 /* we need to do it this way so that the callback gets called before we continue */
1253 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2068 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1254 2069
1255 child_reap (EV_A_ pid, pid, status); 2070 child_reap (EV_A_ pid, pid, status);
1256 if (EV_PID_HASHSIZE > 1) 2071 if ((EV_PID_HASHSIZE) > 1)
1257 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2072 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1258} 2073}
1259 2074
1260#endif 2075#endif
1261 2076
1262/*****************************************************************************/ 2077/*****************************************************************************/
1263 2078
2079#if EV_USE_IOCP
2080# include "ev_iocp.c"
2081#endif
1264#if EV_USE_PORT 2082#if EV_USE_PORT
1265# include "ev_port.c" 2083# include "ev_port.c"
1266#endif 2084#endif
1267#if EV_USE_KQUEUE 2085#if EV_USE_KQUEUE
1268# include "ev_kqueue.c" 2086# include "ev_kqueue.c"
… …
1275#endif 2093#endif
1276#if EV_USE_SELECT 2094#if EV_USE_SELECT
1277# include "ev_select.c" 2095# include "ev_select.c"
1278#endif 2096#endif
1279 2097
1280int 2098int ecb_cold
1281ev_version_major (void) 2099ev_version_major (void)
1282{ 2100{
1283 return EV_VERSION_MAJOR; 2101 return EV_VERSION_MAJOR;
1284} 2102}
1285 2103
1286int 2104int ecb_cold
1287ev_version_minor (void) 2105ev_version_minor (void)
1288{ 2106{
1289 return EV_VERSION_MINOR; 2107 return EV_VERSION_MINOR;
1290} 2108}
1291 2109
1292/* return true if we are running with elevated privileges and should ignore env variables */ 2110/* return true if we are running with elevated privileges and should ignore env variables */
1293int inline_size 2111int inline_size ecb_cold
1294enable_secure (void) 2112enable_secure (void)
1295{ 2113{
1296#ifdef _WIN32 2114#ifdef _WIN32
1297 return 0; 2115 return 0;
1298#else 2116#else
1299 return getuid () != geteuid () 2117 return getuid () != geteuid ()
1300 || getgid () != getegid (); 2118 || getgid () != getegid ();
1301#endif 2119#endif
1302} 2120}
1303 2121
1304unsigned int 2122unsigned int ecb_cold
1305ev_supported_backends (void) 2123ev_supported_backends (void)
1306{ 2124{
1307 unsigned int flags = 0; 2125 unsigned int flags = 0;
1308 2126
1309 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2127 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1313 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2131 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1314 2132
1315 return flags; 2133 return flags;
1316} 2134}
1317 2135
1318unsigned int 2136unsigned int ecb_cold
1319ev_recommended_backends (void) 2137ev_recommended_backends (void)
1320{ 2138{
1321 unsigned int flags = ev_supported_backends (); 2139 unsigned int flags = ev_supported_backends ();
1322 2140
1323#ifndef __NetBSD__ 2141#ifndef __NetBSD__
… …
1328#ifdef __APPLE__ 2146#ifdef __APPLE__
1329 /* only select works correctly on that "unix-certified" platform */ 2147 /* only select works correctly on that "unix-certified" platform */
1330 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2148 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1331 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2149 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1332#endif 2150#endif
2151#ifdef __FreeBSD__
2152 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2153#endif
1333 2154
1334 return flags; 2155 return flags;
1335} 2156}
1336 2157
1337unsigned int 2158unsigned int ecb_cold
1338ev_embeddable_backends (void) 2159ev_embeddable_backends (void)
1339{ 2160{
1340 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2161 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1341 2162
1342 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2163 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1343 /* please fix it and tell me how to detect the fix */ 2164 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1344 flags &= ~EVBACKEND_EPOLL; 2165 flags &= ~EVBACKEND_EPOLL;
1345 2166
1346 return flags; 2167 return flags;
1347} 2168}
1348 2169
1349unsigned int 2170unsigned int
1350ev_backend (EV_P) 2171ev_backend (EV_P)
1351{ 2172{
1352 return backend; 2173 return backend;
1353} 2174}
1354 2175
2176#if EV_FEATURE_API
1355unsigned int 2177unsigned int
1356ev_loop_count (EV_P) 2178ev_iteration (EV_P)
1357{ 2179{
1358 return loop_count; 2180 return loop_count;
2181}
2182
2183unsigned int
2184ev_depth (EV_P)
2185{
2186 return loop_depth;
1359} 2187}
1360 2188
1361void 2189void
1362ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2190ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1363{ 2191{
… …
1368ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2196ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1369{ 2197{
1370 timeout_blocktime = interval; 2198 timeout_blocktime = interval;
1371} 2199}
1372 2200
2201void
2202ev_set_userdata (EV_P_ void *data)
2203{
2204 userdata = data;
2205}
2206
2207void *
2208ev_userdata (EV_P)
2209{
2210 return userdata;
2211}
2212
2213void
2214ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2215{
2216 invoke_cb = invoke_pending_cb;
2217}
2218
2219void
2220ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2221{
2222 release_cb = release;
2223 acquire_cb = acquire;
2224}
2225#endif
2226
1373/* initialise a loop structure, must be zero-initialised */ 2227/* initialise a loop structure, must be zero-initialised */
1374static void noinline 2228static void noinline ecb_cold
1375loop_init (EV_P_ unsigned int flags) 2229loop_init (EV_P_ unsigned int flags)
1376{ 2230{
1377 if (!backend) 2231 if (!backend)
1378 { 2232 {
2233 origflags = flags;
2234
1379#if EV_USE_REALTIME 2235#if EV_USE_REALTIME
1380 if (!have_realtime) 2236 if (!have_realtime)
1381 { 2237 {
1382 struct timespec ts; 2238 struct timespec ts;
1383 2239
… …
1394 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2250 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1395 have_monotonic = 1; 2251 have_monotonic = 1;
1396 } 2252 }
1397#endif 2253#endif
1398 2254
1399 ev_rt_now = ev_time ();
1400 mn_now = get_clock ();
1401 now_floor = mn_now;
1402 rtmn_diff = ev_rt_now - mn_now;
1403
1404 io_blocktime = 0.;
1405 timeout_blocktime = 0.;
1406 backend = 0;
1407 backend_fd = -1;
1408 gotasync = 0;
1409#if EV_USE_INOTIFY
1410 fs_fd = -2;
1411#endif
1412
1413 /* pid check not overridable via env */ 2255 /* pid check not overridable via env */
1414#ifndef _WIN32 2256#ifndef _WIN32
1415 if (flags & EVFLAG_FORKCHECK) 2257 if (flags & EVFLAG_FORKCHECK)
1416 curpid = getpid (); 2258 curpid = getpid ();
1417#endif 2259#endif
… …
1419 if (!(flags & EVFLAG_NOENV) 2261 if (!(flags & EVFLAG_NOENV)
1420 && !enable_secure () 2262 && !enable_secure ()
1421 && getenv ("LIBEV_FLAGS")) 2263 && getenv ("LIBEV_FLAGS"))
1422 flags = atoi (getenv ("LIBEV_FLAGS")); 2264 flags = atoi (getenv ("LIBEV_FLAGS"));
1423 2265
1424 if (!(flags & 0x0000ffffU)) 2266 ev_rt_now = ev_time ();
2267 mn_now = get_clock ();
2268 now_floor = mn_now;
2269 rtmn_diff = ev_rt_now - mn_now;
2270#if EV_FEATURE_API
2271 invoke_cb = ev_invoke_pending;
2272#endif
2273
2274 io_blocktime = 0.;
2275 timeout_blocktime = 0.;
2276 backend = 0;
2277 backend_fd = -1;
2278 sig_pending = 0;
2279#if EV_ASYNC_ENABLE
2280 async_pending = 0;
2281#endif
2282 pipe_write_skipped = 0;
2283 pipe_write_wanted = 0;
2284#if EV_USE_INOTIFY
2285 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2286#endif
2287#if EV_USE_SIGNALFD
2288 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2289#endif
2290
2291 if (!(flags & EVBACKEND_MASK))
1425 flags |= ev_recommended_backends (); 2292 flags |= ev_recommended_backends ();
1426 2293
2294#if EV_USE_IOCP
2295 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2296#endif
1427#if EV_USE_PORT 2297#if EV_USE_PORT
1428 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2298 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1429#endif 2299#endif
1430#if EV_USE_KQUEUE 2300#if EV_USE_KQUEUE
1431 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2301 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1440 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2310 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1441#endif 2311#endif
1442 2312
1443 ev_prepare_init (&pending_w, pendingcb); 2313 ev_prepare_init (&pending_w, pendingcb);
1444 2314
2315#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1445 ev_init (&pipe_w, pipecb); 2316 ev_init (&pipe_w, pipecb);
1446 ev_set_priority (&pipe_w, EV_MAXPRI); 2317 ev_set_priority (&pipe_w, EV_MAXPRI);
2318#endif
1447 } 2319 }
1448} 2320}
1449 2321
1450/* free up a loop structure */ 2322/* free up a loop structure */
1451static void noinline 2323void ecb_cold
1452loop_destroy (EV_P) 2324ev_loop_destroy (EV_P)
1453{ 2325{
1454 int i; 2326 int i;
1455 2327
2328#if EV_MULTIPLICITY
2329 /* mimic free (0) */
2330 if (!EV_A)
2331 return;
2332#endif
2333
2334#if EV_CLEANUP_ENABLE
2335 /* queue cleanup watchers (and execute them) */
2336 if (expect_false (cleanupcnt))
2337 {
2338 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2339 EV_INVOKE_PENDING;
2340 }
2341#endif
2342
2343#if EV_CHILD_ENABLE
2344 if (ev_is_active (&childev))
2345 {
2346 ev_ref (EV_A); /* child watcher */
2347 ev_signal_stop (EV_A_ &childev);
2348 }
2349#endif
2350
1456 if (ev_is_active (&pipe_w)) 2351 if (ev_is_active (&pipe_w))
1457 { 2352 {
1458 ev_ref (EV_A); /* signal watcher */ 2353 /*ev_ref (EV_A);*/
1459 ev_io_stop (EV_A_ &pipe_w); 2354 /*ev_io_stop (EV_A_ &pipe_w);*/
1460 2355
1461#if EV_USE_EVENTFD 2356#if EV_USE_EVENTFD
1462 if (evfd >= 0) 2357 if (evfd >= 0)
1463 close (evfd); 2358 close (evfd);
1464#endif 2359#endif
1465 2360
1466 if (evpipe [0] >= 0) 2361 if (evpipe [0] >= 0)
1467 { 2362 {
1468 close (evpipe [0]); 2363 EV_WIN32_CLOSE_FD (evpipe [0]);
1469 close (evpipe [1]); 2364 EV_WIN32_CLOSE_FD (evpipe [1]);
1470 } 2365 }
1471 } 2366 }
2367
2368#if EV_USE_SIGNALFD
2369 if (ev_is_active (&sigfd_w))
2370 close (sigfd);
2371#endif
1472 2372
1473#if EV_USE_INOTIFY 2373#if EV_USE_INOTIFY
1474 if (fs_fd >= 0) 2374 if (fs_fd >= 0)
1475 close (fs_fd); 2375 close (fs_fd);
1476#endif 2376#endif
1477 2377
1478 if (backend_fd >= 0) 2378 if (backend_fd >= 0)
1479 close (backend_fd); 2379 close (backend_fd);
1480 2380
2381#if EV_USE_IOCP
2382 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2383#endif
1481#if EV_USE_PORT 2384#if EV_USE_PORT
1482 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2385 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1483#endif 2386#endif
1484#if EV_USE_KQUEUE 2387#if EV_USE_KQUEUE
1485 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2388 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1500#if EV_IDLE_ENABLE 2403#if EV_IDLE_ENABLE
1501 array_free (idle, [i]); 2404 array_free (idle, [i]);
1502#endif 2405#endif
1503 } 2406 }
1504 2407
1505 ev_free (anfds); anfdmax = 0; 2408 ev_free (anfds); anfds = 0; anfdmax = 0;
1506 2409
1507 /* have to use the microsoft-never-gets-it-right macro */ 2410 /* have to use the microsoft-never-gets-it-right macro */
1508 array_free (rfeed, EMPTY); 2411 array_free (rfeed, EMPTY);
1509 array_free (fdchange, EMPTY); 2412 array_free (fdchange, EMPTY);
1510 array_free (timer, EMPTY); 2413 array_free (timer, EMPTY);
… …
1512 array_free (periodic, EMPTY); 2415 array_free (periodic, EMPTY);
1513#endif 2416#endif
1514#if EV_FORK_ENABLE 2417#if EV_FORK_ENABLE
1515 array_free (fork, EMPTY); 2418 array_free (fork, EMPTY);
1516#endif 2419#endif
2420#if EV_CLEANUP_ENABLE
2421 array_free (cleanup, EMPTY);
2422#endif
1517 array_free (prepare, EMPTY); 2423 array_free (prepare, EMPTY);
1518 array_free (check, EMPTY); 2424 array_free (check, EMPTY);
1519#if EV_ASYNC_ENABLE 2425#if EV_ASYNC_ENABLE
1520 array_free (async, EMPTY); 2426 array_free (async, EMPTY);
1521#endif 2427#endif
1522 2428
1523 backend = 0; 2429 backend = 0;
2430
2431#if EV_MULTIPLICITY
2432 if (ev_is_default_loop (EV_A))
2433#endif
2434 ev_default_loop_ptr = 0;
2435#if EV_MULTIPLICITY
2436 else
2437 ev_free (EV_A);
2438#endif
1524} 2439}
1525 2440
1526#if EV_USE_INOTIFY 2441#if EV_USE_INOTIFY
1527inline_size void infy_fork (EV_P); 2442inline_size void infy_fork (EV_P);
1528#endif 2443#endif
… …
1543 infy_fork (EV_A); 2458 infy_fork (EV_A);
1544#endif 2459#endif
1545 2460
1546 if (ev_is_active (&pipe_w)) 2461 if (ev_is_active (&pipe_w))
1547 { 2462 {
1548 /* this "locks" the handlers against writing to the pipe */ 2463 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1549 /* while we modify the fd vars */
1550 gotsig = 1;
1551#if EV_ASYNC_ENABLE
1552 gotasync = 1;
1553#endif
1554 2464
1555 ev_ref (EV_A); 2465 ev_ref (EV_A);
1556 ev_io_stop (EV_A_ &pipe_w); 2466 ev_io_stop (EV_A_ &pipe_w);
1557 2467
1558#if EV_USE_EVENTFD 2468#if EV_USE_EVENTFD
… …
1560 close (evfd); 2470 close (evfd);
1561#endif 2471#endif
1562 2472
1563 if (evpipe [0] >= 0) 2473 if (evpipe [0] >= 0)
1564 { 2474 {
1565 close (evpipe [0]); 2475 EV_WIN32_CLOSE_FD (evpipe [0]);
1566 close (evpipe [1]); 2476 EV_WIN32_CLOSE_FD (evpipe [1]);
1567 } 2477 }
1568 2478
2479#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1569 evpipe_init (EV_A); 2480 evpipe_init (EV_A);
1570 /* now iterate over everything, in case we missed something */ 2481 /* now iterate over everything, in case we missed something */
1571 pipecb (EV_A_ &pipe_w, EV_READ); 2482 pipecb (EV_A_ &pipe_w, EV_READ);
2483#endif
1572 } 2484 }
1573 2485
1574 postfork = 0; 2486 postfork = 0;
1575} 2487}
1576 2488
1577#if EV_MULTIPLICITY 2489#if EV_MULTIPLICITY
1578 2490
1579struct ev_loop * 2491struct ev_loop * ecb_cold
1580ev_loop_new (unsigned int flags) 2492ev_loop_new (unsigned int flags)
1581{ 2493{
1582 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2494 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1583 2495
1584 memset (loop, 0, sizeof (struct ev_loop)); 2496 memset (EV_A, 0, sizeof (struct ev_loop));
1585
1586 loop_init (EV_A_ flags); 2497 loop_init (EV_A_ flags);
1587 2498
1588 if (ev_backend (EV_A)) 2499 if (ev_backend (EV_A))
1589 return loop; 2500 return EV_A;
1590 2501
2502 ev_free (EV_A);
1591 return 0; 2503 return 0;
1592} 2504}
1593 2505
1594void 2506#endif /* multiplicity */
1595ev_loop_destroy (EV_P)
1596{
1597 loop_destroy (EV_A);
1598 ev_free (loop);
1599}
1600
1601void
1602ev_loop_fork (EV_P)
1603{
1604 postfork = 1; /* must be in line with ev_default_fork */
1605}
1606 2507
1607#if EV_VERIFY 2508#if EV_VERIFY
1608static void noinline 2509static void noinline ecb_cold
1609verify_watcher (EV_P_ W w) 2510verify_watcher (EV_P_ W w)
1610{ 2511{
1611 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2512 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1612 2513
1613 if (w->pending) 2514 if (w->pending)
1614 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2515 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1615} 2516}
1616 2517
1617static void noinline 2518static void noinline ecb_cold
1618verify_heap (EV_P_ ANHE *heap, int N) 2519verify_heap (EV_P_ ANHE *heap, int N)
1619{ 2520{
1620 int i; 2521 int i;
1621 2522
1622 for (i = HEAP0; i < N + HEAP0; ++i) 2523 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1627 2528
1628 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2529 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1629 } 2530 }
1630} 2531}
1631 2532
1632static void noinline 2533static void noinline ecb_cold
1633array_verify (EV_P_ W *ws, int cnt) 2534array_verify (EV_P_ W *ws, int cnt)
1634{ 2535{
1635 while (cnt--) 2536 while (cnt--)
1636 { 2537 {
1637 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2538 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1638 verify_watcher (EV_A_ ws [cnt]); 2539 verify_watcher (EV_A_ ws [cnt]);
1639 } 2540 }
1640} 2541}
1641#endif 2542#endif
1642 2543
1643void 2544#if EV_FEATURE_API
2545void ecb_cold
1644ev_loop_verify (EV_P) 2546ev_verify (EV_P)
1645{ 2547{
1646#if EV_VERIFY 2548#if EV_VERIFY
1647 int i; 2549 int i;
1648 WL w; 2550 WL w;
1649 2551
… …
1683#if EV_FORK_ENABLE 2585#if EV_FORK_ENABLE
1684 assert (forkmax >= forkcnt); 2586 assert (forkmax >= forkcnt);
1685 array_verify (EV_A_ (W *)forks, forkcnt); 2587 array_verify (EV_A_ (W *)forks, forkcnt);
1686#endif 2588#endif
1687 2589
2590#if EV_CLEANUP_ENABLE
2591 assert (cleanupmax >= cleanupcnt);
2592 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2593#endif
2594
1688#if EV_ASYNC_ENABLE 2595#if EV_ASYNC_ENABLE
1689 assert (asyncmax >= asynccnt); 2596 assert (asyncmax >= asynccnt);
1690 array_verify (EV_A_ (W *)asyncs, asynccnt); 2597 array_verify (EV_A_ (W *)asyncs, asynccnt);
1691#endif 2598#endif
1692 2599
2600#if EV_PREPARE_ENABLE
1693 assert (preparemax >= preparecnt); 2601 assert (preparemax >= preparecnt);
1694 array_verify (EV_A_ (W *)prepares, preparecnt); 2602 array_verify (EV_A_ (W *)prepares, preparecnt);
2603#endif
1695 2604
2605#if EV_CHECK_ENABLE
1696 assert (checkmax >= checkcnt); 2606 assert (checkmax >= checkcnt);
1697 array_verify (EV_A_ (W *)checks, checkcnt); 2607 array_verify (EV_A_ (W *)checks, checkcnt);
2608#endif
1698 2609
1699# if 0 2610# if 0
2611#if EV_CHILD_ENABLE
1700 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2612 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1701 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2613 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2614#endif
1702# endif 2615# endif
1703#endif 2616#endif
1704} 2617}
1705 2618#endif
1706#endif /* multiplicity */
1707 2619
1708#if EV_MULTIPLICITY 2620#if EV_MULTIPLICITY
1709struct ev_loop * 2621struct ev_loop * ecb_cold
1710ev_default_loop_init (unsigned int flags)
1711#else 2622#else
1712int 2623int
2624#endif
1713ev_default_loop (unsigned int flags) 2625ev_default_loop (unsigned int flags)
1714#endif
1715{ 2626{
1716 if (!ev_default_loop_ptr) 2627 if (!ev_default_loop_ptr)
1717 { 2628 {
1718#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1719 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2630 EV_P = ev_default_loop_ptr = &default_loop_struct;
1720#else 2631#else
1721 ev_default_loop_ptr = 1; 2632 ev_default_loop_ptr = 1;
1722#endif 2633#endif
1723 2634
1724 loop_init (EV_A_ flags); 2635 loop_init (EV_A_ flags);
1725 2636
1726 if (ev_backend (EV_A)) 2637 if (ev_backend (EV_A))
1727 { 2638 {
1728#ifndef _WIN32 2639#if EV_CHILD_ENABLE
1729 ev_signal_init (&childev, childcb, SIGCHLD); 2640 ev_signal_init (&childev, childcb, SIGCHLD);
1730 ev_set_priority (&childev, EV_MAXPRI); 2641 ev_set_priority (&childev, EV_MAXPRI);
1731 ev_signal_start (EV_A_ &childev); 2642 ev_signal_start (EV_A_ &childev);
1732 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2643 ev_unref (EV_A); /* child watcher should not keep loop alive */
1733#endif 2644#endif
… …
1738 2649
1739 return ev_default_loop_ptr; 2650 return ev_default_loop_ptr;
1740} 2651}
1741 2652
1742void 2653void
1743ev_default_destroy (void) 2654ev_loop_fork (EV_P)
1744{ 2655{
1745#if EV_MULTIPLICITY
1746 struct ev_loop *loop = ev_default_loop_ptr;
1747#endif
1748
1749 ev_default_loop_ptr = 0;
1750
1751#ifndef _WIN32
1752 ev_ref (EV_A); /* child watcher */
1753 ev_signal_stop (EV_A_ &childev);
1754#endif
1755
1756 loop_destroy (EV_A);
1757}
1758
1759void
1760ev_default_fork (void)
1761{
1762#if EV_MULTIPLICITY
1763 struct ev_loop *loop = ev_default_loop_ptr;
1764#endif
1765
1766 postfork = 1; /* must be in line with ev_loop_fork */ 2656 postfork = 1; /* must be in line with ev_default_fork */
1767} 2657}
1768 2658
1769/*****************************************************************************/ 2659/*****************************************************************************/
1770 2660
1771void 2661void
1772ev_invoke (EV_P_ void *w, int revents) 2662ev_invoke (EV_P_ void *w, int revents)
1773{ 2663{
1774 EV_CB_INVOKE ((W)w, revents); 2664 EV_CB_INVOKE ((W)w, revents);
1775} 2665}
1776 2666
1777inline_speed void 2667unsigned int
1778call_pending (EV_P) 2668ev_pending_count (EV_P)
2669{
2670 int pri;
2671 unsigned int count = 0;
2672
2673 for (pri = NUMPRI; pri--; )
2674 count += pendingcnt [pri];
2675
2676 return count;
2677}
2678
2679void noinline
2680ev_invoke_pending (EV_P)
1779{ 2681{
1780 int pri; 2682 int pri;
1781 2683
1782 for (pri = NUMPRI; pri--; ) 2684 for (pri = NUMPRI; pri--; )
1783 while (pendingcnt [pri]) 2685 while (pendingcnt [pri])
1784 { 2686 {
1785 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2687 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1786
1787 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1788 /* ^ this is no longer true, as pending_w could be here */
1789 2688
1790 p->w->pending = 0; 2689 p->w->pending = 0;
1791 EV_CB_INVOKE (p->w, p->events); 2690 EV_CB_INVOKE (p->w, p->events);
1792 EV_FREQUENT_CHECK; 2691 EV_FREQUENT_CHECK;
1793 } 2692 }
… …
1850 EV_FREQUENT_CHECK; 2749 EV_FREQUENT_CHECK;
1851 feed_reverse (EV_A_ (W)w); 2750 feed_reverse (EV_A_ (W)w);
1852 } 2751 }
1853 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2752 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1854 2753
1855 feed_reverse_done (EV_A_ EV_TIMEOUT); 2754 feed_reverse_done (EV_A_ EV_TIMER);
1856 } 2755 }
1857} 2756}
1858 2757
1859#if EV_PERIODIC_ENABLE 2758#if EV_PERIODIC_ENABLE
2759
2760static void noinline
2761periodic_recalc (EV_P_ ev_periodic *w)
2762{
2763 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2764 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2765
2766 /* the above almost always errs on the low side */
2767 while (at <= ev_rt_now)
2768 {
2769 ev_tstamp nat = at + w->interval;
2770
2771 /* when resolution fails us, we use ev_rt_now */
2772 if (expect_false (nat == at))
2773 {
2774 at = ev_rt_now;
2775 break;
2776 }
2777
2778 at = nat;
2779 }
2780
2781 ev_at (w) = at;
2782}
2783
1860/* make periodics pending */ 2784/* make periodics pending */
1861inline_size void 2785inline_size void
1862periodics_reify (EV_P) 2786periodics_reify (EV_P)
1863{ 2787{
1864 EV_FREQUENT_CHECK; 2788 EV_FREQUENT_CHECK;
… …
1883 ANHE_at_cache (periodics [HEAP0]); 2807 ANHE_at_cache (periodics [HEAP0]);
1884 downheap (periodics, periodiccnt, HEAP0); 2808 downheap (periodics, periodiccnt, HEAP0);
1885 } 2809 }
1886 else if (w->interval) 2810 else if (w->interval)
1887 { 2811 {
1888 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2812 periodic_recalc (EV_A_ w);
1889 /* if next trigger time is not sufficiently in the future, put it there */
1890 /* this might happen because of floating point inexactness */
1891 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1892 {
1893 ev_at (w) += w->interval;
1894
1895 /* if interval is unreasonably low we might still have a time in the past */
1896 /* so correct this. this will make the periodic very inexact, but the user */
1897 /* has effectively asked to get triggered more often than possible */
1898 if (ev_at (w) < ev_rt_now)
1899 ev_at (w) = ev_rt_now;
1900 }
1901
1902 ANHE_at_cache (periodics [HEAP0]); 2813 ANHE_at_cache (periodics [HEAP0]);
1903 downheap (periodics, periodiccnt, HEAP0); 2814 downheap (periodics, periodiccnt, HEAP0);
1904 } 2815 }
1905 else 2816 else
1906 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2817 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1913 feed_reverse_done (EV_A_ EV_PERIODIC); 2824 feed_reverse_done (EV_A_ EV_PERIODIC);
1914 } 2825 }
1915} 2826}
1916 2827
1917/* simply recalculate all periodics */ 2828/* simply recalculate all periodics */
1918/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2829/* TODO: maybe ensure that at least one event happens when jumping forward? */
1919static void noinline 2830static void noinline ecb_cold
1920periodics_reschedule (EV_P) 2831periodics_reschedule (EV_P)
1921{ 2832{
1922 int i; 2833 int i;
1923 2834
1924 /* adjust periodics after time jump */ 2835 /* adjust periodics after time jump */
… …
1927 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2838 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1928 2839
1929 if (w->reschedule_cb) 2840 if (w->reschedule_cb)
1930 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2841 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1931 else if (w->interval) 2842 else if (w->interval)
1932 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2843 periodic_recalc (EV_A_ w);
1933 2844
1934 ANHE_at_cache (periodics [i]); 2845 ANHE_at_cache (periodics [i]);
1935 } 2846 }
1936 2847
1937 reheap (periodics, periodiccnt); 2848 reheap (periodics, periodiccnt);
1938} 2849}
1939#endif 2850#endif
1940 2851
1941/* adjust all timers by a given offset */ 2852/* adjust all timers by a given offset */
1942static void noinline 2853static void noinline ecb_cold
1943timers_reschedule (EV_P_ ev_tstamp adjust) 2854timers_reschedule (EV_P_ ev_tstamp adjust)
1944{ 2855{
1945 int i; 2856 int i;
1946 2857
1947 for (i = 0; i < timercnt; ++i) 2858 for (i = 0; i < timercnt; ++i)
… …
1951 ANHE_at_cache (*he); 2862 ANHE_at_cache (*he);
1952 } 2863 }
1953} 2864}
1954 2865
1955/* fetch new monotonic and realtime times from the kernel */ 2866/* fetch new monotonic and realtime times from the kernel */
1956/* also detetc if there was a timejump, and act accordingly */ 2867/* also detect if there was a timejump, and act accordingly */
1957inline_speed void 2868inline_speed void
1958time_update (EV_P_ ev_tstamp max_block) 2869time_update (EV_P_ ev_tstamp max_block)
1959{ 2870{
1960#if EV_USE_MONOTONIC 2871#if EV_USE_MONOTONIC
1961 if (expect_true (have_monotonic)) 2872 if (expect_true (have_monotonic))
… …
1984 * doesn't hurt either as we only do this on time-jumps or 2895 * doesn't hurt either as we only do this on time-jumps or
1985 * in the unlikely event of having been preempted here. 2896 * in the unlikely event of having been preempted here.
1986 */ 2897 */
1987 for (i = 4; --i; ) 2898 for (i = 4; --i; )
1988 { 2899 {
2900 ev_tstamp diff;
1989 rtmn_diff = ev_rt_now - mn_now; 2901 rtmn_diff = ev_rt_now - mn_now;
1990 2902
2903 diff = odiff - rtmn_diff;
2904
1991 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2905 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1992 return; /* all is well */ 2906 return; /* all is well */
1993 2907
1994 ev_rt_now = ev_time (); 2908 ev_rt_now = ev_time ();
1995 mn_now = get_clock (); 2909 mn_now = get_clock ();
1996 now_floor = mn_now; 2910 now_floor = mn_now;
… …
2018 2932
2019 mn_now = ev_rt_now; 2933 mn_now = ev_rt_now;
2020 } 2934 }
2021} 2935}
2022 2936
2023static int loop_done; 2937int
2024
2025void
2026ev_loop (EV_P_ int flags) 2938ev_run (EV_P_ int flags)
2027{ 2939{
2940#if EV_FEATURE_API
2941 ++loop_depth;
2942#endif
2943
2944 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2945
2028 loop_done = EVUNLOOP_CANCEL; 2946 loop_done = EVBREAK_CANCEL;
2029 2947
2030 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2948 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2031 2949
2032 do 2950 do
2033 { 2951 {
2034#if EV_VERIFY >= 2 2952#if EV_VERIFY >= 2
2035 ev_loop_verify (EV_A); 2953 ev_verify (EV_A);
2036#endif 2954#endif
2037 2955
2038#ifndef _WIN32 2956#ifndef _WIN32
2039 if (expect_false (curpid)) /* penalise the forking check even more */ 2957 if (expect_false (curpid)) /* penalise the forking check even more */
2040 if (expect_false (getpid () != curpid)) 2958 if (expect_false (getpid () != curpid))
… …
2048 /* we might have forked, so queue fork handlers */ 2966 /* we might have forked, so queue fork handlers */
2049 if (expect_false (postfork)) 2967 if (expect_false (postfork))
2050 if (forkcnt) 2968 if (forkcnt)
2051 { 2969 {
2052 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2970 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2053 call_pending (EV_A); 2971 EV_INVOKE_PENDING;
2054 } 2972 }
2055#endif 2973#endif
2056 2974
2975#if EV_PREPARE_ENABLE
2057 /* queue prepare watchers (and execute them) */ 2976 /* queue prepare watchers (and execute them) */
2058 if (expect_false (preparecnt)) 2977 if (expect_false (preparecnt))
2059 { 2978 {
2060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2979 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2061 call_pending (EV_A); 2980 EV_INVOKE_PENDING;
2062 } 2981 }
2982#endif
2983
2984 if (expect_false (loop_done))
2985 break;
2063 2986
2064 /* we might have forked, so reify kernel state if necessary */ 2987 /* we might have forked, so reify kernel state if necessary */
2065 if (expect_false (postfork)) 2988 if (expect_false (postfork))
2066 loop_fork (EV_A); 2989 loop_fork (EV_A);
2067 2990
… …
2071 /* calculate blocking time */ 2994 /* calculate blocking time */
2072 { 2995 {
2073 ev_tstamp waittime = 0.; 2996 ev_tstamp waittime = 0.;
2074 ev_tstamp sleeptime = 0.; 2997 ev_tstamp sleeptime = 0.;
2075 2998
2999 /* remember old timestamp for io_blocktime calculation */
3000 ev_tstamp prev_mn_now = mn_now;
3001
3002 /* update time to cancel out callback processing overhead */
3003 time_update (EV_A_ 1e100);
3004
3005 /* from now on, we want a pipe-wake-up */
3006 pipe_write_wanted = 1;
3007
3008 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3009
2076 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3010 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2077 { 3011 {
2078 /* update time to cancel out callback processing overhead */
2079 time_update (EV_A_ 1e100);
2080
2081 waittime = MAX_BLOCKTIME; 3012 waittime = MAX_BLOCKTIME;
2082 3013
2083 if (timercnt) 3014 if (timercnt)
2084 { 3015 {
2085 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3016 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2086 if (waittime > to) waittime = to; 3017 if (waittime > to) waittime = to;
2087 } 3018 }
2088 3019
2089#if EV_PERIODIC_ENABLE 3020#if EV_PERIODIC_ENABLE
2090 if (periodiccnt) 3021 if (periodiccnt)
2091 { 3022 {
2092 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3023 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2093 if (waittime > to) waittime = to; 3024 if (waittime > to) waittime = to;
2094 } 3025 }
2095#endif 3026#endif
2096 3027
3028 /* don't let timeouts decrease the waittime below timeout_blocktime */
2097 if (expect_false (waittime < timeout_blocktime)) 3029 if (expect_false (waittime < timeout_blocktime))
2098 waittime = timeout_blocktime; 3030 waittime = timeout_blocktime;
2099 3031
2100 sleeptime = waittime - backend_fudge; 3032 /* at this point, we NEED to wait, so we have to ensure */
3033 /* to pass a minimum nonzero value to the backend */
3034 if (expect_false (waittime < backend_mintime))
3035 waittime = backend_mintime;
2101 3036
3037 /* extra check because io_blocktime is commonly 0 */
2102 if (expect_true (sleeptime > io_blocktime)) 3038 if (expect_false (io_blocktime))
2103 sleeptime = io_blocktime;
2104
2105 if (sleeptime)
2106 { 3039 {
3040 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3041
3042 if (sleeptime > waittime - backend_mintime)
3043 sleeptime = waittime - backend_mintime;
3044
3045 if (expect_true (sleeptime > 0.))
3046 {
2107 ev_sleep (sleeptime); 3047 ev_sleep (sleeptime);
2108 waittime -= sleeptime; 3048 waittime -= sleeptime;
3049 }
2109 } 3050 }
2110 } 3051 }
2111 3052
3053#if EV_FEATURE_API
2112 ++loop_count; 3054 ++loop_count;
3055#endif
3056 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2113 backend_poll (EV_A_ waittime); 3057 backend_poll (EV_A_ waittime);
3058 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3059
3060 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3061
3062 if (pipe_write_skipped)
3063 {
3064 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3065 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3066 }
3067
2114 3068
2115 /* update ev_rt_now, do magic */ 3069 /* update ev_rt_now, do magic */
2116 time_update (EV_A_ waittime + sleeptime); 3070 time_update (EV_A_ waittime + sleeptime);
2117 } 3071 }
2118 3072
… …
2125#if EV_IDLE_ENABLE 3079#if EV_IDLE_ENABLE
2126 /* queue idle watchers unless other events are pending */ 3080 /* queue idle watchers unless other events are pending */
2127 idle_reify (EV_A); 3081 idle_reify (EV_A);
2128#endif 3082#endif
2129 3083
3084#if EV_CHECK_ENABLE
2130 /* queue check watchers, to be executed first */ 3085 /* queue check watchers, to be executed first */
2131 if (expect_false (checkcnt)) 3086 if (expect_false (checkcnt))
2132 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3087 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3088#endif
2133 3089
2134 call_pending (EV_A); 3090 EV_INVOKE_PENDING;
2135 } 3091 }
2136 while (expect_true ( 3092 while (expect_true (
2137 activecnt 3093 activecnt
2138 && !loop_done 3094 && !loop_done
2139 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3095 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2140 )); 3096 ));
2141 3097
2142 if (loop_done == EVUNLOOP_ONE) 3098 if (loop_done == EVBREAK_ONE)
2143 loop_done = EVUNLOOP_CANCEL; 3099 loop_done = EVBREAK_CANCEL;
3100
3101#if EV_FEATURE_API
3102 --loop_depth;
3103#endif
3104
3105 return activecnt;
2144} 3106}
2145 3107
2146void 3108void
2147ev_unloop (EV_P_ int how) 3109ev_break (EV_P_ int how)
2148{ 3110{
2149 loop_done = how; 3111 loop_done = how;
2150} 3112}
2151 3113
2152void 3114void
… …
2199inline_size void 3161inline_size void
2200wlist_del (WL *head, WL elem) 3162wlist_del (WL *head, WL elem)
2201{ 3163{
2202 while (*head) 3164 while (*head)
2203 { 3165 {
2204 if (*head == elem) 3166 if (expect_true (*head == elem))
2205 { 3167 {
2206 *head = elem->next; 3168 *head = elem->next;
2207 return; 3169 break;
2208 } 3170 }
2209 3171
2210 head = &(*head)->next; 3172 head = &(*head)->next;
2211 } 3173 }
2212} 3174}
… …
2240} 3202}
2241 3203
2242inline_size void 3204inline_size void
2243pri_adjust (EV_P_ W w) 3205pri_adjust (EV_P_ W w)
2244{ 3206{
2245 int pri = w->priority; 3207 int pri = ev_priority (w);
2246 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3208 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2247 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3209 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2248 w->priority = pri; 3210 ev_set_priority (w, pri);
2249} 3211}
2250 3212
2251inline_speed void 3213inline_speed void
2252ev_start (EV_P_ W w, int active) 3214ev_start (EV_P_ W w, int active)
2253{ 3215{
… …
2272 3234
2273 if (expect_false (ev_is_active (w))) 3235 if (expect_false (ev_is_active (w)))
2274 return; 3236 return;
2275 3237
2276 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3238 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2277 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3239 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2278 3240
2279 EV_FREQUENT_CHECK; 3241 EV_FREQUENT_CHECK;
2280 3242
2281 ev_start (EV_A_ (W)w, 1); 3243 ev_start (EV_A_ (W)w, 1);
2282 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3244 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2283 wlist_add (&anfds[fd].head, (WL)w); 3245 wlist_add (&anfds[fd].head, (WL)w);
2284 3246
2285 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3247 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2286 w->events &= ~EV__IOFDSET; 3248 w->events &= ~EV__IOFDSET;
2287 3249
2288 EV_FREQUENT_CHECK; 3250 EV_FREQUENT_CHECK;
2289} 3251}
2290 3252
… …
2300 EV_FREQUENT_CHECK; 3262 EV_FREQUENT_CHECK;
2301 3263
2302 wlist_del (&anfds[w->fd].head, (WL)w); 3264 wlist_del (&anfds[w->fd].head, (WL)w);
2303 ev_stop (EV_A_ (W)w); 3265 ev_stop (EV_A_ (W)w);
2304 3266
2305 fd_change (EV_A_ w->fd, 1); 3267 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2306 3268
2307 EV_FREQUENT_CHECK; 3269 EV_FREQUENT_CHECK;
2308} 3270}
2309 3271
2310void noinline 3272void noinline
… …
2352 timers [active] = timers [timercnt + HEAP0]; 3314 timers [active] = timers [timercnt + HEAP0];
2353 adjustheap (timers, timercnt, active); 3315 adjustheap (timers, timercnt, active);
2354 } 3316 }
2355 } 3317 }
2356 3318
2357 EV_FREQUENT_CHECK;
2358
2359 ev_at (w) -= mn_now; 3319 ev_at (w) -= mn_now;
2360 3320
2361 ev_stop (EV_A_ (W)w); 3321 ev_stop (EV_A_ (W)w);
3322
3323 EV_FREQUENT_CHECK;
2362} 3324}
2363 3325
2364void noinline 3326void noinline
2365ev_timer_again (EV_P_ ev_timer *w) 3327ev_timer_again (EV_P_ ev_timer *w)
2366{ 3328{
2367 EV_FREQUENT_CHECK; 3329 EV_FREQUENT_CHECK;
3330
3331 clear_pending (EV_A_ (W)w);
2368 3332
2369 if (ev_is_active (w)) 3333 if (ev_is_active (w))
2370 { 3334 {
2371 if (w->repeat) 3335 if (w->repeat)
2372 { 3336 {
… …
2384 } 3348 }
2385 3349
2386 EV_FREQUENT_CHECK; 3350 EV_FREQUENT_CHECK;
2387} 3351}
2388 3352
3353ev_tstamp
3354ev_timer_remaining (EV_P_ ev_timer *w)
3355{
3356 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3357}
3358
2389#if EV_PERIODIC_ENABLE 3359#if EV_PERIODIC_ENABLE
2390void noinline 3360void noinline
2391ev_periodic_start (EV_P_ ev_periodic *w) 3361ev_periodic_start (EV_P_ ev_periodic *w)
2392{ 3362{
2393 if (expect_false (ev_is_active (w))) 3363 if (expect_false (ev_is_active (w)))
… …
2396 if (w->reschedule_cb) 3366 if (w->reschedule_cb)
2397 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3367 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2398 else if (w->interval) 3368 else if (w->interval)
2399 { 3369 {
2400 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3370 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2401 /* this formula differs from the one in periodic_reify because we do not always round up */ 3371 periodic_recalc (EV_A_ w);
2402 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2403 } 3372 }
2404 else 3373 else
2405 ev_at (w) = w->offset; 3374 ev_at (w) = w->offset;
2406 3375
2407 EV_FREQUENT_CHECK; 3376 EV_FREQUENT_CHECK;
… …
2439 periodics [active] = periodics [periodiccnt + HEAP0]; 3408 periodics [active] = periodics [periodiccnt + HEAP0];
2440 adjustheap (periodics, periodiccnt, active); 3409 adjustheap (periodics, periodiccnt, active);
2441 } 3410 }
2442 } 3411 }
2443 3412
2444 EV_FREQUENT_CHECK;
2445
2446 ev_stop (EV_A_ (W)w); 3413 ev_stop (EV_A_ (W)w);
3414
3415 EV_FREQUENT_CHECK;
2447} 3416}
2448 3417
2449void noinline 3418void noinline
2450ev_periodic_again (EV_P_ ev_periodic *w) 3419ev_periodic_again (EV_P_ ev_periodic *w)
2451{ 3420{
… …
2457 3426
2458#ifndef SA_RESTART 3427#ifndef SA_RESTART
2459# define SA_RESTART 0 3428# define SA_RESTART 0
2460#endif 3429#endif
2461 3430
3431#if EV_SIGNAL_ENABLE
3432
2462void noinline 3433void noinline
2463ev_signal_start (EV_P_ ev_signal *w) 3434ev_signal_start (EV_P_ ev_signal *w)
2464{ 3435{
2465#if EV_MULTIPLICITY
2466 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2467#endif
2468 if (expect_false (ev_is_active (w))) 3436 if (expect_false (ev_is_active (w)))
2469 return; 3437 return;
2470 3438
2471 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3439 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2472 3440
2473 evpipe_init (EV_A); 3441#if EV_MULTIPLICITY
3442 assert (("libev: a signal must not be attached to two different loops",
3443 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2474 3444
2475 EV_FREQUENT_CHECK; 3445 signals [w->signum - 1].loop = EV_A;
3446#endif
2476 3447
3448 EV_FREQUENT_CHECK;
3449
3450#if EV_USE_SIGNALFD
3451 if (sigfd == -2)
2477 { 3452 {
2478#ifndef _WIN32 3453 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2479 sigset_t full, prev; 3454 if (sigfd < 0 && errno == EINVAL)
2480 sigfillset (&full); 3455 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2481 sigprocmask (SIG_SETMASK, &full, &prev);
2482#endif
2483 3456
2484 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3457 if (sigfd >= 0)
3458 {
3459 fd_intern (sigfd); /* doing it twice will not hurt */
2485 3460
2486#ifndef _WIN32 3461 sigemptyset (&sigfd_set);
2487 sigprocmask (SIG_SETMASK, &prev, 0); 3462
2488#endif 3463 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3464 ev_set_priority (&sigfd_w, EV_MAXPRI);
3465 ev_io_start (EV_A_ &sigfd_w);
3466 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3467 }
2489 } 3468 }
3469
3470 if (sigfd >= 0)
3471 {
3472 /* TODO: check .head */
3473 sigaddset (&sigfd_set, w->signum);
3474 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3475
3476 signalfd (sigfd, &sigfd_set, 0);
3477 }
3478#endif
2490 3479
2491 ev_start (EV_A_ (W)w, 1); 3480 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&signals [w->signum - 1].head, (WL)w); 3481 wlist_add (&signals [w->signum - 1].head, (WL)w);
2493 3482
2494 if (!((WL)w)->next) 3483 if (!((WL)w)->next)
3484# if EV_USE_SIGNALFD
3485 if (sigfd < 0) /*TODO*/
3486# endif
2495 { 3487 {
2496#if _WIN32 3488# ifdef _WIN32
3489 evpipe_init (EV_A);
3490
2497 signal (w->signum, ev_sighandler); 3491 signal (w->signum, ev_sighandler);
2498#else 3492# else
2499 struct sigaction sa; 3493 struct sigaction sa;
3494
3495 evpipe_init (EV_A);
3496
2500 sa.sa_handler = ev_sighandler; 3497 sa.sa_handler = ev_sighandler;
2501 sigfillset (&sa.sa_mask); 3498 sigfillset (&sa.sa_mask);
2502 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3499 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2503 sigaction (w->signum, &sa, 0); 3500 sigaction (w->signum, &sa, 0);
3501
3502 if (origflags & EVFLAG_NOSIGMASK)
3503 {
3504 sigemptyset (&sa.sa_mask);
3505 sigaddset (&sa.sa_mask, w->signum);
3506 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3507 }
2504#endif 3508#endif
2505 } 3509 }
2506 3510
2507 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2508} 3512}
2509 3513
2510void noinline 3514void noinline
… …
2518 3522
2519 wlist_del (&signals [w->signum - 1].head, (WL)w); 3523 wlist_del (&signals [w->signum - 1].head, (WL)w);
2520 ev_stop (EV_A_ (W)w); 3524 ev_stop (EV_A_ (W)w);
2521 3525
2522 if (!signals [w->signum - 1].head) 3526 if (!signals [w->signum - 1].head)
3527 {
3528#if EV_MULTIPLICITY
3529 signals [w->signum - 1].loop = 0; /* unattach from signal */
3530#endif
3531#if EV_USE_SIGNALFD
3532 if (sigfd >= 0)
3533 {
3534 sigset_t ss;
3535
3536 sigemptyset (&ss);
3537 sigaddset (&ss, w->signum);
3538 sigdelset (&sigfd_set, w->signum);
3539
3540 signalfd (sigfd, &sigfd_set, 0);
3541 sigprocmask (SIG_UNBLOCK, &ss, 0);
3542 }
3543 else
3544#endif
2523 signal (w->signum, SIG_DFL); 3545 signal (w->signum, SIG_DFL);
3546 }
2524 3547
2525 EV_FREQUENT_CHECK; 3548 EV_FREQUENT_CHECK;
2526} 3549}
3550
3551#endif
3552
3553#if EV_CHILD_ENABLE
2527 3554
2528void 3555void
2529ev_child_start (EV_P_ ev_child *w) 3556ev_child_start (EV_P_ ev_child *w)
2530{ 3557{
2531#if EV_MULTIPLICITY 3558#if EV_MULTIPLICITY
… …
2535 return; 3562 return;
2536 3563
2537 EV_FREQUENT_CHECK; 3564 EV_FREQUENT_CHECK;
2538 3565
2539 ev_start (EV_A_ (W)w, 1); 3566 ev_start (EV_A_ (W)w, 1);
2540 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3567 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2541 3568
2542 EV_FREQUENT_CHECK; 3569 EV_FREQUENT_CHECK;
2543} 3570}
2544 3571
2545void 3572void
… …
2549 if (expect_false (!ev_is_active (w))) 3576 if (expect_false (!ev_is_active (w)))
2550 return; 3577 return;
2551 3578
2552 EV_FREQUENT_CHECK; 3579 EV_FREQUENT_CHECK;
2553 3580
2554 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3581 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2555 ev_stop (EV_A_ (W)w); 3582 ev_stop (EV_A_ (W)w);
2556 3583
2557 EV_FREQUENT_CHECK; 3584 EV_FREQUENT_CHECK;
2558} 3585}
3586
3587#endif
2559 3588
2560#if EV_STAT_ENABLE 3589#if EV_STAT_ENABLE
2561 3590
2562# ifdef _WIN32 3591# ifdef _WIN32
2563# undef lstat 3592# undef lstat
… …
2569#define MIN_STAT_INTERVAL 0.1074891 3598#define MIN_STAT_INTERVAL 0.1074891
2570 3599
2571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3600static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2572 3601
2573#if EV_USE_INOTIFY 3602#if EV_USE_INOTIFY
2574# define EV_INOTIFY_BUFSIZE 8192 3603
3604/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3605# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2575 3606
2576static void noinline 3607static void noinline
2577infy_add (EV_P_ ev_stat *w) 3608infy_add (EV_P_ ev_stat *w)
2578{ 3609{
2579 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3610 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2580 3611
2581 if (w->wd < 0) 3612 if (w->wd >= 0)
3613 {
3614 struct statfs sfs;
3615
3616 /* now local changes will be tracked by inotify, but remote changes won't */
3617 /* unless the filesystem is known to be local, we therefore still poll */
3618 /* also do poll on <2.6.25, but with normal frequency */
3619
3620 if (!fs_2625)
3621 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3622 else if (!statfs (w->path, &sfs)
3623 && (sfs.f_type == 0x1373 /* devfs */
3624 || sfs.f_type == 0xEF53 /* ext2/3 */
3625 || sfs.f_type == 0x3153464a /* jfs */
3626 || sfs.f_type == 0x52654973 /* reiser3 */
3627 || sfs.f_type == 0x01021994 /* tempfs */
3628 || sfs.f_type == 0x58465342 /* xfs */))
3629 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3630 else
3631 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2582 { 3632 }
3633 else
3634 {
3635 /* can't use inotify, continue to stat */
2583 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3636 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2584 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2585 3637
2586 /* monitor some parent directory for speedup hints */ 3638 /* if path is not there, monitor some parent directory for speedup hints */
2587 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3639 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2588 /* but an efficiency issue only */ 3640 /* but an efficiency issue only */
2589 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3641 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2590 { 3642 {
2591 char path [4096]; 3643 char path [4096];
… …
2601 if (!pend || pend == path) 3653 if (!pend || pend == path)
2602 break; 3654 break;
2603 3655
2604 *pend = 0; 3656 *pend = 0;
2605 w->wd = inotify_add_watch (fs_fd, path, mask); 3657 w->wd = inotify_add_watch (fs_fd, path, mask);
2606 } 3658 }
2607 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3659 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2608 } 3660 }
2609 } 3661 }
2610 3662
2611 if (w->wd >= 0) 3663 if (w->wd >= 0)
2612 {
2613 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3664 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2614 3665
2615 /* now local changes will be tracked by inotify, but remote changes won't */ 3666 /* now re-arm timer, if required */
2616 /* unless the filesystem it known to be local, we therefore still poll */ 3667 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2617 /* also do poll on <2.6.25, but with normal frequency */
2618 struct statfs sfs;
2619
2620 if (fs_2625 && !statfs (w->path, &sfs))
2621 if (sfs.f_type == 0x1373 /* devfs */
2622 || sfs.f_type == 0xEF53 /* ext2/3 */
2623 || sfs.f_type == 0x3153464a /* jfs */
2624 || sfs.f_type == 0x52654973 /* reiser3 */
2625 || sfs.f_type == 0x01021994 /* tempfs */
2626 || sfs.f_type == 0x58465342 /* xfs */)
2627 return;
2628
2629 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2630 ev_timer_again (EV_A_ &w->timer); 3668 ev_timer_again (EV_A_ &w->timer);
2631 } 3669 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2632} 3670}
2633 3671
2634static void noinline 3672static void noinline
2635infy_del (EV_P_ ev_stat *w) 3673infy_del (EV_P_ ev_stat *w)
2636{ 3674{
… …
2639 3677
2640 if (wd < 0) 3678 if (wd < 0)
2641 return; 3679 return;
2642 3680
2643 w->wd = -2; 3681 w->wd = -2;
2644 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3682 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2645 wlist_del (&fs_hash [slot].head, (WL)w); 3683 wlist_del (&fs_hash [slot].head, (WL)w);
2646 3684
2647 /* remove this watcher, if others are watching it, they will rearm */ 3685 /* remove this watcher, if others are watching it, they will rearm */
2648 inotify_rm_watch (fs_fd, wd); 3686 inotify_rm_watch (fs_fd, wd);
2649} 3687}
… …
2651static void noinline 3689static void noinline
2652infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3690infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2653{ 3691{
2654 if (slot < 0) 3692 if (slot < 0)
2655 /* overflow, need to check for all hash slots */ 3693 /* overflow, need to check for all hash slots */
2656 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3694 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2657 infy_wd (EV_A_ slot, wd, ev); 3695 infy_wd (EV_A_ slot, wd, ev);
2658 else 3696 else
2659 { 3697 {
2660 WL w_; 3698 WL w_;
2661 3699
2662 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3700 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2663 { 3701 {
2664 ev_stat *w = (ev_stat *)w_; 3702 ev_stat *w = (ev_stat *)w_;
2665 w_ = w_->next; /* lets us remove this watcher and all before it */ 3703 w_ = w_->next; /* lets us remove this watcher and all before it */
2666 3704
2667 if (w->wd == wd || wd == -1) 3705 if (w->wd == wd || wd == -1)
2668 { 3706 {
2669 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3707 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2670 { 3708 {
2671 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3709 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2672 w->wd = -1; 3710 w->wd = -1;
2673 infy_add (EV_A_ w); /* re-add, no matter what */ 3711 infy_add (EV_A_ w); /* re-add, no matter what */
2674 } 3712 }
2675 3713
2676 stat_timer_cb (EV_A_ &w->timer, 0); 3714 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2681 3719
2682static void 3720static void
2683infy_cb (EV_P_ ev_io *w, int revents) 3721infy_cb (EV_P_ ev_io *w, int revents)
2684{ 3722{
2685 char buf [EV_INOTIFY_BUFSIZE]; 3723 char buf [EV_INOTIFY_BUFSIZE];
2686 struct inotify_event *ev = (struct inotify_event *)buf;
2687 int ofs; 3724 int ofs;
2688 int len = read (fs_fd, buf, sizeof (buf)); 3725 int len = read (fs_fd, buf, sizeof (buf));
2689 3726
2690 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3727 for (ofs = 0; ofs < len; )
3728 {
3729 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2691 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3730 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3731 ofs += sizeof (struct inotify_event) + ev->len;
3732 }
2692} 3733}
2693 3734
2694inline_size void 3735inline_size void ecb_cold
2695check_2625 (EV_P) 3736ev_check_2625 (EV_P)
2696{ 3737{
2697 /* kernels < 2.6.25 are borked 3738 /* kernels < 2.6.25 are borked
2698 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3739 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2699 */ 3740 */
2700 struct utsname buf; 3741 if (ev_linux_version () < 0x020619)
2701 int major, minor, micro;
2702
2703 if (uname (&buf))
2704 return; 3742 return;
2705 3743
2706 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2707 return;
2708
2709 if (major < 2
2710 || (major == 2 && minor < 6)
2711 || (major == 2 && minor == 6 && micro < 25))
2712 return;
2713
2714 fs_2625 = 1; 3744 fs_2625 = 1;
3745}
3746
3747inline_size int
3748infy_newfd (void)
3749{
3750#if defined IN_CLOEXEC && defined IN_NONBLOCK
3751 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3752 if (fd >= 0)
3753 return fd;
3754#endif
3755 return inotify_init ();
2715} 3756}
2716 3757
2717inline_size void 3758inline_size void
2718infy_init (EV_P) 3759infy_init (EV_P)
2719{ 3760{
2720 if (fs_fd != -2) 3761 if (fs_fd != -2)
2721 return; 3762 return;
2722 3763
2723 fs_fd = -1; 3764 fs_fd = -1;
2724 3765
2725 check_2625 (EV_A); 3766 ev_check_2625 (EV_A);
2726 3767
2727 fs_fd = inotify_init (); 3768 fs_fd = infy_newfd ();
2728 3769
2729 if (fs_fd >= 0) 3770 if (fs_fd >= 0)
2730 { 3771 {
3772 fd_intern (fs_fd);
2731 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3773 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2732 ev_set_priority (&fs_w, EV_MAXPRI); 3774 ev_set_priority (&fs_w, EV_MAXPRI);
2733 ev_io_start (EV_A_ &fs_w); 3775 ev_io_start (EV_A_ &fs_w);
3776 ev_unref (EV_A);
2734 } 3777 }
2735} 3778}
2736 3779
2737inline_size void 3780inline_size void
2738infy_fork (EV_P) 3781infy_fork (EV_P)
… …
2740 int slot; 3783 int slot;
2741 3784
2742 if (fs_fd < 0) 3785 if (fs_fd < 0)
2743 return; 3786 return;
2744 3787
3788 ev_ref (EV_A);
3789 ev_io_stop (EV_A_ &fs_w);
2745 close (fs_fd); 3790 close (fs_fd);
2746 fs_fd = inotify_init (); 3791 fs_fd = infy_newfd ();
2747 3792
3793 if (fs_fd >= 0)
3794 {
3795 fd_intern (fs_fd);
3796 ev_io_set (&fs_w, fs_fd, EV_READ);
3797 ev_io_start (EV_A_ &fs_w);
3798 ev_unref (EV_A);
3799 }
3800
2748 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3801 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2749 { 3802 {
2750 WL w_ = fs_hash [slot].head; 3803 WL w_ = fs_hash [slot].head;
2751 fs_hash [slot].head = 0; 3804 fs_hash [slot].head = 0;
2752 3805
2753 while (w_) 3806 while (w_)
… …
2758 w->wd = -1; 3811 w->wd = -1;
2759 3812
2760 if (fs_fd >= 0) 3813 if (fs_fd >= 0)
2761 infy_add (EV_A_ w); /* re-add, no matter what */ 3814 infy_add (EV_A_ w); /* re-add, no matter what */
2762 else 3815 else
3816 {
3817 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3818 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2763 ev_timer_again (EV_A_ &w->timer); 3819 ev_timer_again (EV_A_ &w->timer);
3820 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3821 }
2764 } 3822 }
2765 } 3823 }
2766} 3824}
2767 3825
2768#endif 3826#endif
… …
2785static void noinline 3843static void noinline
2786stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3844stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2787{ 3845{
2788 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3846 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2789 3847
2790 /* we copy this here each the time so that */ 3848 ev_statdata prev = w->attr;
2791 /* prev has the old value when the callback gets invoked */
2792 w->prev = w->attr;
2793 ev_stat_stat (EV_A_ w); 3849 ev_stat_stat (EV_A_ w);
2794 3850
2795 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3851 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2796 if ( 3852 if (
2797 w->prev.st_dev != w->attr.st_dev 3853 prev.st_dev != w->attr.st_dev
2798 || w->prev.st_ino != w->attr.st_ino 3854 || prev.st_ino != w->attr.st_ino
2799 || w->prev.st_mode != w->attr.st_mode 3855 || prev.st_mode != w->attr.st_mode
2800 || w->prev.st_nlink != w->attr.st_nlink 3856 || prev.st_nlink != w->attr.st_nlink
2801 || w->prev.st_uid != w->attr.st_uid 3857 || prev.st_uid != w->attr.st_uid
2802 || w->prev.st_gid != w->attr.st_gid 3858 || prev.st_gid != w->attr.st_gid
2803 || w->prev.st_rdev != w->attr.st_rdev 3859 || prev.st_rdev != w->attr.st_rdev
2804 || w->prev.st_size != w->attr.st_size 3860 || prev.st_size != w->attr.st_size
2805 || w->prev.st_atime != w->attr.st_atime 3861 || prev.st_atime != w->attr.st_atime
2806 || w->prev.st_mtime != w->attr.st_mtime 3862 || prev.st_mtime != w->attr.st_mtime
2807 || w->prev.st_ctime != w->attr.st_ctime 3863 || prev.st_ctime != w->attr.st_ctime
2808 ) { 3864 ) {
3865 /* we only update w->prev on actual differences */
3866 /* in case we test more often than invoke the callback, */
3867 /* to ensure that prev is always different to attr */
3868 w->prev = prev;
3869
2809 #if EV_USE_INOTIFY 3870 #if EV_USE_INOTIFY
2810 if (fs_fd >= 0) 3871 if (fs_fd >= 0)
2811 { 3872 {
2812 infy_del (EV_A_ w); 3873 infy_del (EV_A_ w);
2813 infy_add (EV_A_ w); 3874 infy_add (EV_A_ w);
… …
2838 3899
2839 if (fs_fd >= 0) 3900 if (fs_fd >= 0)
2840 infy_add (EV_A_ w); 3901 infy_add (EV_A_ w);
2841 else 3902 else
2842#endif 3903#endif
3904 {
2843 ev_timer_again (EV_A_ &w->timer); 3905 ev_timer_again (EV_A_ &w->timer);
3906 ev_unref (EV_A);
3907 }
2844 3908
2845 ev_start (EV_A_ (W)w, 1); 3909 ev_start (EV_A_ (W)w, 1);
2846 3910
2847 EV_FREQUENT_CHECK; 3911 EV_FREQUENT_CHECK;
2848} 3912}
… …
2857 EV_FREQUENT_CHECK; 3921 EV_FREQUENT_CHECK;
2858 3922
2859#if EV_USE_INOTIFY 3923#if EV_USE_INOTIFY
2860 infy_del (EV_A_ w); 3924 infy_del (EV_A_ w);
2861#endif 3925#endif
3926
3927 if (ev_is_active (&w->timer))
3928 {
3929 ev_ref (EV_A);
2862 ev_timer_stop (EV_A_ &w->timer); 3930 ev_timer_stop (EV_A_ &w->timer);
3931 }
2863 3932
2864 ev_stop (EV_A_ (W)w); 3933 ev_stop (EV_A_ (W)w);
2865 3934
2866 EV_FREQUENT_CHECK; 3935 EV_FREQUENT_CHECK;
2867} 3936}
… …
2912 3981
2913 EV_FREQUENT_CHECK; 3982 EV_FREQUENT_CHECK;
2914} 3983}
2915#endif 3984#endif
2916 3985
3986#if EV_PREPARE_ENABLE
2917void 3987void
2918ev_prepare_start (EV_P_ ev_prepare *w) 3988ev_prepare_start (EV_P_ ev_prepare *w)
2919{ 3989{
2920 if (expect_false (ev_is_active (w))) 3990 if (expect_false (ev_is_active (w)))
2921 return; 3991 return;
… …
2947 4017
2948 ev_stop (EV_A_ (W)w); 4018 ev_stop (EV_A_ (W)w);
2949 4019
2950 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
2951} 4021}
4022#endif
2952 4023
4024#if EV_CHECK_ENABLE
2953void 4025void
2954ev_check_start (EV_P_ ev_check *w) 4026ev_check_start (EV_P_ ev_check *w)
2955{ 4027{
2956 if (expect_false (ev_is_active (w))) 4028 if (expect_false (ev_is_active (w)))
2957 return; 4029 return;
… …
2983 4055
2984 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
2985 4057
2986 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
2987} 4059}
4060#endif
2988 4061
2989#if EV_EMBED_ENABLE 4062#if EV_EMBED_ENABLE
2990void noinline 4063void noinline
2991ev_embed_sweep (EV_P_ ev_embed *w) 4064ev_embed_sweep (EV_P_ ev_embed *w)
2992{ 4065{
2993 ev_loop (w->other, EVLOOP_NONBLOCK); 4066 ev_run (w->other, EVRUN_NOWAIT);
2994} 4067}
2995 4068
2996static void 4069static void
2997embed_io_cb (EV_P_ ev_io *io, int revents) 4070embed_io_cb (EV_P_ ev_io *io, int revents)
2998{ 4071{
2999 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4072 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3000 4073
3001 if (ev_cb (w)) 4074 if (ev_cb (w))
3002 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4075 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3003 else 4076 else
3004 ev_loop (w->other, EVLOOP_NONBLOCK); 4077 ev_run (w->other, EVRUN_NOWAIT);
3005} 4078}
3006 4079
3007static void 4080static void
3008embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4081embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3009{ 4082{
3010 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4083 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3011 4084
3012 { 4085 {
3013 struct ev_loop *loop = w->other; 4086 EV_P = w->other;
3014 4087
3015 while (fdchangecnt) 4088 while (fdchangecnt)
3016 { 4089 {
3017 fd_reify (EV_A); 4090 fd_reify (EV_A);
3018 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4091 ev_run (EV_A_ EVRUN_NOWAIT);
3019 } 4092 }
3020 } 4093 }
3021} 4094}
3022 4095
3023static void 4096static void
… …
3026 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4099 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3027 4100
3028 ev_embed_stop (EV_A_ w); 4101 ev_embed_stop (EV_A_ w);
3029 4102
3030 { 4103 {
3031 struct ev_loop *loop = w->other; 4104 EV_P = w->other;
3032 4105
3033 ev_loop_fork (EV_A); 4106 ev_loop_fork (EV_A);
3034 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4107 ev_run (EV_A_ EVRUN_NOWAIT);
3035 } 4108 }
3036 4109
3037 ev_embed_start (EV_A_ w); 4110 ev_embed_start (EV_A_ w);
3038} 4111}
3039 4112
… …
3050{ 4123{
3051 if (expect_false (ev_is_active (w))) 4124 if (expect_false (ev_is_active (w)))
3052 return; 4125 return;
3053 4126
3054 { 4127 {
3055 struct ev_loop *loop = w->other; 4128 EV_P = w->other;
3056 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4129 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3057 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4130 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3058 } 4131 }
3059 4132
3060 EV_FREQUENT_CHECK; 4133 EV_FREQUENT_CHECK;
… …
3087 4160
3088 ev_io_stop (EV_A_ &w->io); 4161 ev_io_stop (EV_A_ &w->io);
3089 ev_prepare_stop (EV_A_ &w->prepare); 4162 ev_prepare_stop (EV_A_ &w->prepare);
3090 ev_fork_stop (EV_A_ &w->fork); 4163 ev_fork_stop (EV_A_ &w->fork);
3091 4164
4165 ev_stop (EV_A_ (W)w);
4166
3092 EV_FREQUENT_CHECK; 4167 EV_FREQUENT_CHECK;
3093} 4168}
3094#endif 4169#endif
3095 4170
3096#if EV_FORK_ENABLE 4171#if EV_FORK_ENABLE
… …
3129 4204
3130 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
3131} 4206}
3132#endif 4207#endif
3133 4208
4209#if EV_CLEANUP_ENABLE
4210void
4211ev_cleanup_start (EV_P_ ev_cleanup *w)
4212{
4213 if (expect_false (ev_is_active (w)))
4214 return;
4215
4216 EV_FREQUENT_CHECK;
4217
4218 ev_start (EV_A_ (W)w, ++cleanupcnt);
4219 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4220 cleanups [cleanupcnt - 1] = w;
4221
4222 /* cleanup watchers should never keep a refcount on the loop */
4223 ev_unref (EV_A);
4224 EV_FREQUENT_CHECK;
4225}
4226
4227void
4228ev_cleanup_stop (EV_P_ ev_cleanup *w)
4229{
4230 clear_pending (EV_A_ (W)w);
4231 if (expect_false (!ev_is_active (w)))
4232 return;
4233
4234 EV_FREQUENT_CHECK;
4235 ev_ref (EV_A);
4236
4237 {
4238 int active = ev_active (w);
4239
4240 cleanups [active - 1] = cleanups [--cleanupcnt];
4241 ev_active (cleanups [active - 1]) = active;
4242 }
4243
4244 ev_stop (EV_A_ (W)w);
4245
4246 EV_FREQUENT_CHECK;
4247}
4248#endif
4249
3134#if EV_ASYNC_ENABLE 4250#if EV_ASYNC_ENABLE
3135void 4251void
3136ev_async_start (EV_P_ ev_async *w) 4252ev_async_start (EV_P_ ev_async *w)
3137{ 4253{
3138 if (expect_false (ev_is_active (w))) 4254 if (expect_false (ev_is_active (w)))
3139 return; 4255 return;
3140 4256
4257 w->sent = 0;
4258
3141 evpipe_init (EV_A); 4259 evpipe_init (EV_A);
3142 4260
3143 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
3144 4262
3145 ev_start (EV_A_ (W)w, ++asynccnt); 4263 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3172 4290
3173void 4291void
3174ev_async_send (EV_P_ ev_async *w) 4292ev_async_send (EV_P_ ev_async *w)
3175{ 4293{
3176 w->sent = 1; 4294 w->sent = 1;
3177 evpipe_write (EV_A_ &gotasync); 4295 evpipe_write (EV_A_ &async_pending);
3178} 4296}
3179#endif 4297#endif
3180 4298
3181/*****************************************************************************/ 4299/*****************************************************************************/
3182 4300
… …
3222{ 4340{
3223 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4341 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3224 4342
3225 if (expect_false (!once)) 4343 if (expect_false (!once))
3226 { 4344 {
3227 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4345 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3228 return; 4346 return;
3229 } 4347 }
3230 4348
3231 once->cb = cb; 4349 once->cb = cb;
3232 once->arg = arg; 4350 once->arg = arg;
… …
3247} 4365}
3248 4366
3249/*****************************************************************************/ 4367/*****************************************************************************/
3250 4368
3251#if EV_WALK_ENABLE 4369#if EV_WALK_ENABLE
3252void 4370void ecb_cold
3253ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3254{ 4372{
3255 int i, j; 4373 int i, j;
3256 ev_watcher_list *wl, *wn; 4374 ev_watcher_list *wl, *wn;
3257 4375
… …
3301 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4419 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3302#endif 4420#endif
3303 4421
3304#if EV_IDLE_ENABLE 4422#if EV_IDLE_ENABLE
3305 if (types & EV_IDLE) 4423 if (types & EV_IDLE)
3306 for (j = NUMPRI; i--; ) 4424 for (j = NUMPRI; j--; )
3307 for (i = idlecnt [j]; i--; ) 4425 for (i = idlecnt [j]; i--; )
3308 cb (EV_A_ EV_IDLE, idles [j][i]); 4426 cb (EV_A_ EV_IDLE, idles [j][i]);
3309#endif 4427#endif
3310 4428
3311#if EV_FORK_ENABLE 4429#if EV_FORK_ENABLE
… …
3319 if (types & EV_ASYNC) 4437 if (types & EV_ASYNC)
3320 for (i = asynccnt; i--; ) 4438 for (i = asynccnt; i--; )
3321 cb (EV_A_ EV_ASYNC, asyncs [i]); 4439 cb (EV_A_ EV_ASYNC, asyncs [i]);
3322#endif 4440#endif
3323 4441
4442#if EV_PREPARE_ENABLE
3324 if (types & EV_PREPARE) 4443 if (types & EV_PREPARE)
3325 for (i = preparecnt; i--; ) 4444 for (i = preparecnt; i--; )
3326#if EV_EMBED_ENABLE 4445# if EV_EMBED_ENABLE
3327 if (ev_cb (prepares [i]) != embed_prepare_cb) 4446 if (ev_cb (prepares [i]) != embed_prepare_cb)
3328#endif 4447# endif
3329 cb (EV_A_ EV_PREPARE, prepares [i]); 4448 cb (EV_A_ EV_PREPARE, prepares [i]);
4449#endif
3330 4450
4451#if EV_CHECK_ENABLE
3331 if (types & EV_CHECK) 4452 if (types & EV_CHECK)
3332 for (i = checkcnt; i--; ) 4453 for (i = checkcnt; i--; )
3333 cb (EV_A_ EV_CHECK, checks [i]); 4454 cb (EV_A_ EV_CHECK, checks [i]);
4455#endif
3334 4456
4457#if EV_SIGNAL_ENABLE
3335 if (types & EV_SIGNAL) 4458 if (types & EV_SIGNAL)
3336 for (i = 0; i < signalmax; ++i) 4459 for (i = 0; i < EV_NSIG - 1; ++i)
3337 for (wl = signals [i].head; wl; ) 4460 for (wl = signals [i].head; wl; )
3338 { 4461 {
3339 wn = wl->next; 4462 wn = wl->next;
3340 cb (EV_A_ EV_SIGNAL, wl); 4463 cb (EV_A_ EV_SIGNAL, wl);
3341 wl = wn; 4464 wl = wn;
3342 } 4465 }
4466#endif
3343 4467
4468#if EV_CHILD_ENABLE
3344 if (types & EV_CHILD) 4469 if (types & EV_CHILD)
3345 for (i = EV_PID_HASHSIZE; i--; ) 4470 for (i = (EV_PID_HASHSIZE); i--; )
3346 for (wl = childs [i]; wl; ) 4471 for (wl = childs [i]; wl; )
3347 { 4472 {
3348 wn = wl->next; 4473 wn = wl->next;
3349 cb (EV_A_ EV_CHILD, wl); 4474 cb (EV_A_ EV_CHILD, wl);
3350 wl = wn; 4475 wl = wn;
3351 } 4476 }
4477#endif
3352/* EV_STAT 0x00001000 /* stat data changed */ 4478/* EV_STAT 0x00001000 /* stat data changed */
3353/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4479/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3354} 4480}
3355#endif 4481#endif
3356 4482
3357#if EV_MULTIPLICITY 4483#if EV_MULTIPLICITY
3358 #include "ev_wrap.h" 4484 #include "ev_wrap.h"
3359#endif 4485#endif
3360 4486
3361#ifdef __cplusplus
3362}
3363#endif
3364

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