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Comparing libev/ev.c (file contents):
Revision 1.299 by root, Tue Jul 14 00:09:59 2009 UTC vs.
Revision 1.469 by root, Fri Sep 5 16:21:19 2014 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) 2007,2008,2009,2010,2011,2012,2013 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"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# 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
… …
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>
171# include <unistd.h> 202# include <unistd.h>
172#else 203#else
173# include <io.h> 204# include <io.h>
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
175# include <windows.h> 207# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
178# endif 210# endif
211# undef EV_AVOID_STDIO
179#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
180 221
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
182 223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247#endif
248
249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
251#endif
252
183#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
185# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 256# else
187# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
188# endif 258# endif
189#endif 259#endif
190 260
191#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 263# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 264# else
195# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
196# endif 266# endif
197#endif 267#endif
198 268
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 270# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 271#endif
202 272
203#ifndef EV_USE_NANOSLEEP 273#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 274# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 275# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 276# else
207# define EV_USE_NANOSLEEP 0 277# define EV_USE_NANOSLEEP 0
208# endif 278# endif
209#endif 279#endif
210 280
211#ifndef EV_USE_SELECT 281#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 282# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 283#endif
214 284
215#ifndef EV_USE_POLL 285#ifndef EV_USE_POLL
216# ifdef _WIN32 286# ifdef _WIN32
217# define EV_USE_POLL 0 287# define EV_USE_POLL 0
218# else 288# else
219# define EV_USE_POLL 1 289# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 290# endif
221#endif 291#endif
222 292
223#ifndef EV_USE_EPOLL 293#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 295# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 296# else
227# define EV_USE_EPOLL 0 297# define EV_USE_EPOLL 0
228# endif 298# endif
229#endif 299#endif
230 300
… …
236# define EV_USE_PORT 0 306# define EV_USE_PORT 0
237#endif 307#endif
238 308
239#ifndef EV_USE_INOTIFY 309#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 311# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 312# else
243# define EV_USE_INOTIFY 0 313# define EV_USE_INOTIFY 0
244# endif 314# endif
245#endif 315#endif
246 316
247#ifndef EV_PID_HASHSIZE 317#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 318# 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 319#endif
254 320
255#ifndef EV_INOTIFY_HASHSIZE 321#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 322# 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 323#endif
262 324
263#ifndef EV_USE_EVENTFD 325#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 326# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 327# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 328# else
267# define EV_USE_EVENTFD 0 329# define EV_USE_EVENTFD 0
330# endif
331#endif
332
333#ifndef EV_USE_SIGNALFD
334# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
335# define EV_USE_SIGNALFD EV_FEATURE_OS
336# else
337# define EV_USE_SIGNALFD 0
268# endif 338# endif
269#endif 339#endif
270 340
271#if 0 /* debugging */ 341#if 0 /* debugging */
272# define EV_VERIFY 3 342# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 343# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 344# define EV_HEAP_CACHE_AT 1
275#endif 345#endif
276 346
277#ifndef EV_VERIFY 347#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 348# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 349#endif
280 350
281#ifndef EV_USE_4HEAP 351#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 352# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 353#endif
284 354
285#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
357#endif
358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
287#endif 373#endif
288 374
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* 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. */ 376/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 378# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
297# else 383# else
… …
316# undef EV_USE_INOTIFY 402# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
318#endif 404#endif
319 405
320#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 409# include <sys/select.h>
323# endif 410# endif
324#endif 411#endif
325 412
326#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 414# include <sys/statfs.h>
329# include <sys/inotify.h> 415# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
334# endif 420# endif
335#endif 421#endif
336 422
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 425# include <stdint.h>
344# ifdef __cplusplus 426# ifndef EFD_NONBLOCK
345extern "C" { 427# define EFD_NONBLOCK O_NONBLOCK
346# endif 428# endif
347int eventfd (unsigned int initval, int flags); 429# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 430# ifdef O_CLOEXEC
349} 431# define EFD_CLOEXEC O_CLOEXEC
432# else
433# define EFD_CLOEXEC 02000000
434# endif
350# endif 435# endif
436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
437#endif
438
439#if EV_USE_SIGNALFD
440/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
441# include <stdint.h>
442# ifndef SFD_NONBLOCK
443# define SFD_NONBLOCK O_NONBLOCK
444# endif
445# ifndef SFD_CLOEXEC
446# ifdef O_CLOEXEC
447# define SFD_CLOEXEC O_CLOEXEC
448# else
449# define SFD_CLOEXEC 02000000
450# endif
451# endif
452EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
453
454struct signalfd_siginfo
455{
456 uint32_t ssi_signo;
457 char pad[128 - sizeof (uint32_t)];
458};
351#endif 459#endif
352 460
353/**/ 461/**/
354 462
355#if EV_VERIFY >= 3 463#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 464# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 465#else
358# define EV_FREQUENT_CHECK do { } while (0) 466# define EV_FREQUENT_CHECK do { } while (0)
359#endif 467#endif
360 468
361/* 469/*
362 * This is used to avoid floating point rounding problems. 470 * 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. 471 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 472 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 475
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 476#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) */ 477#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 */
374 478
479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
481
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */
484/*
485 * libecb - http://software.schmorp.de/pkg/libecb
486 *
487 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved.
490 *
491 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met:
493 *
494 * 1. Redistributions of source code must retain the above copyright notice,
495 * this list of conditions and the following disclaimer.
496 *
497 * 2. Redistributions in binary form must reproduce the above copyright
498 * notice, this list of conditions and the following disclaimer in the
499 * documentation and/or other materials provided with the distribution.
500 *
501 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
502 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
503 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
504 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
505 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE.
511 *
512 * Alternatively, the contents of this file may be used under the terms of
513 * the GNU General Public License ("GPL") version 2 or any later version,
514 * in which case the provisions of the GPL are applicable instead of
515 * the above. If you wish to allow the use of your version of this file
516 * only under the terms of the GPL and not to allow others to use your
517 * version of this file under the BSD license, indicate your decision
518 * by deleting the provisions above and replace them with the notice
519 * and other provisions required by the GPL. If you do not delete the
520 * provisions above, a recipient may use your version of this file under
521 * either the BSD or the GPL.
522 */
523
524#ifndef ECB_H
525#define ECB_H
526
527/* 16 bits major, 16 bits minor */
528#define ECB_VERSION 0x00010003
529
530#ifdef _WIN32
531 typedef signed char int8_t;
532 typedef unsigned char uint8_t;
533 typedef signed short int16_t;
534 typedef unsigned short uint16_t;
535 typedef signed int int32_t;
536 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 537 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 538 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 539 typedef unsigned long long uint64_t;
540 #else /* _MSC_VER || __BORLANDC__ */
541 typedef signed __int64 int64_t;
542 typedef unsigned __int64 uint64_t;
543 #endif
544 #ifdef _WIN64
545 #define ECB_PTRSIZE 8
546 typedef uint64_t uintptr_t;
547 typedef int64_t intptr_t;
548 #else
549 #define ECB_PTRSIZE 4
550 typedef uint32_t uintptr_t;
551 typedef int32_t intptr_t;
552 #endif
378#else 553#else
379# define expect(expr,value) (expr) 554 #include <inttypes.h>
380# define noinline 555 #if UINTMAX_MAX > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 556 #define ECB_PTRSIZE 8
382# define inline 557 #else
558 #define ECB_PTRSIZE 4
559 #endif
383# endif 560#endif
561
562/* work around x32 idiocy by defining proper macros */
563#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
564 #if _ILP32
565 #define ECB_AMD64_X32 1
566 #else
567 #define ECB_AMD64 1
384#endif 568 #endif
569#endif
385 570
571/* many compilers define _GNUC_ to some versions but then only implement
572 * what their idiot authors think are the "more important" extensions,
573 * causing enormous grief in return for some better fake benchmark numbers.
574 * or so.
575 * we try to detect these and simply assume they are not gcc - if they have
576 * an issue with that they should have done it right in the first place.
577 */
578#ifndef ECB_GCC_VERSION
579 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
580 #define ECB_GCC_VERSION(major,minor) 0
581 #else
582 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
583 #endif
584#endif
585
586#define ECB_CPP (__cplusplus+0)
587#define ECB_CPP11 (__cplusplus >= 201103L)
588
589#if ECB_CPP
590 #define ECB_C 0
591 #define ECB_STDC_VERSION 0
592#else
593 #define ECB_C 1
594 #define ECB_STDC_VERSION __STDC_VERSION__
595#endif
596
597#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
598#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
599
600#if ECB_CPP
601 #define ECB_EXTERN_C extern "C"
602 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
603 #define ECB_EXTERN_C_END }
604#else
605 #define ECB_EXTERN_C extern
606 #define ECB_EXTERN_C_BEG
607 #define ECB_EXTERN_C_END
608#endif
609
610/*****************************************************************************/
611
612/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
613/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
614
615#if ECB_NO_THREADS
616 #define ECB_NO_SMP 1
617#endif
618
619#if ECB_NO_SMP
620 #define ECB_MEMORY_FENCE do { } while (0)
621#endif
622
623#ifndef ECB_MEMORY_FENCE
624 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
625 #if __i386 || __i386__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
631 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
632 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
633 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
635 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
636 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
637 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
638 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
639 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
641 #elif __aarch64__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
643 #elif (__sparc || __sparc__) && !__sparcv8
644 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
645 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
646 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
647 #elif defined __s390__ || defined __s390x__
648 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
649 #elif defined __mips__
650 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
651 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
652 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
653 #elif defined __alpha__
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
655 #elif defined __hppa__
656 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
658 #elif defined __ia64__
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
660 #elif defined __m68k__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
662 #elif defined __m88k__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
664 #elif defined __sh__
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
666 #endif
667 #endif
668#endif
669
670#ifndef ECB_MEMORY_FENCE
671 #if ECB_GCC_VERSION(4,7)
672 /* see comment below (stdatomic.h) about the C11 memory model. */
673 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
674 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
675 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
676
677 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
678 * without risking compile time errors with other compilers. We *could*
679 * define our own ecb_clang_has_feature, but I just can't be bothered to work
680 * around this shit time and again.
681 * #elif defined __clang && __has_feature (cxx_atomic)
682 * // see comment below (stdatomic.h) about the C11 memory model.
683 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
684 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
685 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
686 */
687
688 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
689 #define ECB_MEMORY_FENCE __sync_synchronize ()
690 #elif _MSC_VER >= 1500 /* VC++ 2008 */
691 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
692 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
693 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
694 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
695 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
696 #elif _MSC_VER >= 1400 /* VC++ 2005 */
697 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
698 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
699 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
700 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
701 #elif defined _WIN32
702 #include <WinNT.h>
703 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
704 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
705 #include <mbarrier.h>
706 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
707 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
708 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
709 #elif __xlC__
710 #define ECB_MEMORY_FENCE __sync ()
711 #endif
712#endif
713
714#ifndef ECB_MEMORY_FENCE
715 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
716 /* we assume that these memory fences work on all variables/all memory accesses, */
717 /* not just C11 atomics and atomic accesses */
718 #include <stdatomic.h>
719 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
720 /* any fence other than seq_cst, which isn't very efficient for us. */
721 /* Why that is, we don't know - either the C11 memory model is quite useless */
722 /* for most usages, or gcc and clang have a bug */
723 /* I *currently* lean towards the latter, and inefficiently implement */
724 /* all three of ecb's fences as a seq_cst fence */
725 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
726 /* for all __atomic_thread_fence's except seq_cst */
727 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
728 #endif
729#endif
730
731#ifndef ECB_MEMORY_FENCE
732 #if !ECB_AVOID_PTHREADS
733 /*
734 * if you get undefined symbol references to pthread_mutex_lock,
735 * or failure to find pthread.h, then you should implement
736 * the ECB_MEMORY_FENCE operations for your cpu/compiler
737 * OR provide pthread.h and link against the posix thread library
738 * of your system.
739 */
740 #include <pthread.h>
741 #define ECB_NEEDS_PTHREADS 1
742 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
743
744 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
745 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
746 #endif
747#endif
748
749#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
750 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
751#endif
752
753#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
754 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
755#endif
756
757/*****************************************************************************/
758
759#if __cplusplus
760 #define ecb_inline static inline
761#elif ECB_GCC_VERSION(2,5)
762 #define ecb_inline static __inline__
763#elif ECB_C99
764 #define ecb_inline static inline
765#else
766 #define ecb_inline static
767#endif
768
769#if ECB_GCC_VERSION(3,3)
770 #define ecb_restrict __restrict__
771#elif ECB_C99
772 #define ecb_restrict restrict
773#else
774 #define ecb_restrict
775#endif
776
777typedef int ecb_bool;
778
779#define ECB_CONCAT_(a, b) a ## b
780#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
781#define ECB_STRINGIFY_(a) # a
782#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
783
784#define ecb_function_ ecb_inline
785
786#if ECB_GCC_VERSION(3,1)
787 #define ecb_attribute(attrlist) __attribute__(attrlist)
788 #define ecb_is_constant(expr) __builtin_constant_p (expr)
789 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
790 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
791#else
792 #define ecb_attribute(attrlist)
793
794 /* possible C11 impl for integral types
795 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
796 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
797
798 #define ecb_is_constant(expr) 0
799 #define ecb_expect(expr,value) (expr)
800 #define ecb_prefetch(addr,rw,locality)
801#endif
802
803/* no emulation for ecb_decltype */
804#if ECB_GCC_VERSION(4,5)
805 #define ecb_decltype(x) __decltype(x)
806#elif ECB_GCC_VERSION(3,0)
807 #define ecb_decltype(x) __typeof(x)
808#endif
809
810#if _MSC_VER >= 1300
811 #define ecb_deprecated __declspec(deprecated)
812#else
813 #define ecb_deprecated ecb_attribute ((__deprecated__))
814#endif
815
816#define ecb_noinline ecb_attribute ((__noinline__))
817#define ecb_unused ecb_attribute ((__unused__))
818#define ecb_const ecb_attribute ((__const__))
819#define ecb_pure ecb_attribute ((__pure__))
820
821/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
822#if ECB_C11
823 #define ecb_noreturn _Noreturn
824#else
825 #define ecb_noreturn ecb_attribute ((__noreturn__))
826#endif
827
828#if ECB_GCC_VERSION(4,3)
829 #define ecb_artificial ecb_attribute ((__artificial__))
830 #define ecb_hot ecb_attribute ((__hot__))
831 #define ecb_cold ecb_attribute ((__cold__))
832#else
833 #define ecb_artificial
834 #define ecb_hot
835 #define ecb_cold
836#endif
837
838/* put around conditional expressions if you are very sure that the */
839/* expression is mostly true or mostly false. note that these return */
840/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 841#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 842#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
843/* for compatibility to the rest of the world */
844#define ecb_likely(expr) ecb_expect_true (expr)
845#define ecb_unlikely(expr) ecb_expect_false (expr)
846
847/* count trailing zero bits and count # of one bits */
848#if ECB_GCC_VERSION(3,4)
849 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
850 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
851 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
852 #define ecb_ctz32(x) __builtin_ctz (x)
853 #define ecb_ctz64(x) __builtin_ctzll (x)
854 #define ecb_popcount32(x) __builtin_popcount (x)
855 /* no popcountll */
856#else
857 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
858 ecb_function_ int
859 ecb_ctz32 (uint32_t x)
860 {
861 int r = 0;
862
863 x &= ~x + 1; /* this isolates the lowest bit */
864
865#if ECB_branchless_on_i386
866 r += !!(x & 0xaaaaaaaa) << 0;
867 r += !!(x & 0xcccccccc) << 1;
868 r += !!(x & 0xf0f0f0f0) << 2;
869 r += !!(x & 0xff00ff00) << 3;
870 r += !!(x & 0xffff0000) << 4;
871#else
872 if (x & 0xaaaaaaaa) r += 1;
873 if (x & 0xcccccccc) r += 2;
874 if (x & 0xf0f0f0f0) r += 4;
875 if (x & 0xff00ff00) r += 8;
876 if (x & 0xffff0000) r += 16;
877#endif
878
879 return r;
880 }
881
882 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
883 ecb_function_ int
884 ecb_ctz64 (uint64_t x)
885 {
886 int shift = x & 0xffffffffU ? 0 : 32;
887 return ecb_ctz32 (x >> shift) + shift;
888 }
889
890 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
891 ecb_function_ int
892 ecb_popcount32 (uint32_t x)
893 {
894 x -= (x >> 1) & 0x55555555;
895 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
896 x = ((x >> 4) + x) & 0x0f0f0f0f;
897 x *= 0x01010101;
898
899 return x >> 24;
900 }
901
902 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
903 ecb_function_ int ecb_ld32 (uint32_t x)
904 {
905 int r = 0;
906
907 if (x >> 16) { x >>= 16; r += 16; }
908 if (x >> 8) { x >>= 8; r += 8; }
909 if (x >> 4) { x >>= 4; r += 4; }
910 if (x >> 2) { x >>= 2; r += 2; }
911 if (x >> 1) { r += 1; }
912
913 return r;
914 }
915
916 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
917 ecb_function_ int ecb_ld64 (uint64_t x)
918 {
919 int r = 0;
920
921 if (x >> 32) { x >>= 32; r += 32; }
922
923 return r + ecb_ld32 (x);
924 }
925#endif
926
927ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
928ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
929ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
930ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
931
932ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
933ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
934{
935 return ( (x * 0x0802U & 0x22110U)
936 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
937}
938
939ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
940ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
941{
942 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
943 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
944 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
945 x = ( x >> 8 ) | ( x << 8);
946
947 return x;
948}
949
950ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
951ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
952{
953 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
954 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
955 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
956 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
957 x = ( x >> 16 ) | ( x << 16);
958
959 return x;
960}
961
962/* popcount64 is only available on 64 bit cpus as gcc builtin */
963/* so for this version we are lazy */
964ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
965ecb_function_ int
966ecb_popcount64 (uint64_t x)
967{
968 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
969}
970
971ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
972ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
973ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
974ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
975ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
976ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
977ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
978ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
979
980ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
981ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
982ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
983ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
984ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
985ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
986ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
987ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
988
989#if ECB_GCC_VERSION(4,3)
990 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
991 #define ecb_bswap32(x) __builtin_bswap32 (x)
992 #define ecb_bswap64(x) __builtin_bswap64 (x)
993#else
994 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
995 ecb_function_ uint16_t
996 ecb_bswap16 (uint16_t x)
997 {
998 return ecb_rotl16 (x, 8);
999 }
1000
1001 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
1002 ecb_function_ uint32_t
1003 ecb_bswap32 (uint32_t x)
1004 {
1005 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1006 }
1007
1008 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
1009 ecb_function_ uint64_t
1010 ecb_bswap64 (uint64_t x)
1011 {
1012 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1013 }
1014#endif
1015
1016#if ECB_GCC_VERSION(4,5)
1017 #define ecb_unreachable() __builtin_unreachable ()
1018#else
1019 /* this seems to work fine, but gcc always emits a warning for it :/ */
1020 ecb_inline void ecb_unreachable (void) ecb_noreturn;
1021 ecb_inline void ecb_unreachable (void) { }
1022#endif
1023
1024/* try to tell the compiler that some condition is definitely true */
1025#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1026
1027ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
1028ecb_inline unsigned char
1029ecb_byteorder_helper (void)
1030{
1031 /* the union code still generates code under pressure in gcc, */
1032 /* but less than using pointers, and always seems to */
1033 /* successfully return a constant. */
1034 /* the reason why we have this horrible preprocessor mess */
1035 /* is to avoid it in all cases, at least on common architectures */
1036 /* or when using a recent enough gcc version (>= 4.6) */
1037#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1038 return 0x44;
1039#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1040 return 0x44;
1041#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1042 return 0x11;
1043#else
1044 union
1045 {
1046 uint32_t i;
1047 uint8_t c;
1048 } u = { 0x11223344 };
1049 return u.c;
1050#endif
1051}
1052
1053ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1054ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1055ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1056ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1057
1058#if ECB_GCC_VERSION(3,0) || ECB_C99
1059 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1060#else
1061 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1062#endif
1063
1064#if __cplusplus
1065 template<typename T>
1066 static inline T ecb_div_rd (T val, T div)
1067 {
1068 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1069 }
1070 template<typename T>
1071 static inline T ecb_div_ru (T val, T div)
1072 {
1073 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1074 }
1075#else
1076 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1077 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1078#endif
1079
1080#if ecb_cplusplus_does_not_suck
1081 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1082 template<typename T, int N>
1083 static inline int ecb_array_length (const T (&arr)[N])
1084 {
1085 return N;
1086 }
1087#else
1088 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1089#endif
1090
1091/*******************************************************************************/
1092/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1093
1094/* basically, everything uses "ieee pure-endian" floating point numbers */
1095/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1096#if 0 \
1097 || __i386 || __i386__ \
1098 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1099 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1100 || defined __s390__ || defined __s390x__ \
1101 || defined __mips__ \
1102 || defined __alpha__ \
1103 || defined __hppa__ \
1104 || defined __ia64__ \
1105 || defined __m68k__ \
1106 || defined __m88k__ \
1107 || defined __sh__ \
1108 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1109 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1110 || defined __aarch64__
1111 #define ECB_STDFP 1
1112 #include <string.h> /* for memcpy */
1113#else
1114 #define ECB_STDFP 0
1115#endif
1116
1117#ifndef ECB_NO_LIBM
1118
1119 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1120
1121 /* only the oldest of old doesn't have this one. solaris. */
1122 #ifdef INFINITY
1123 #define ECB_INFINITY INFINITY
1124 #else
1125 #define ECB_INFINITY HUGE_VAL
1126 #endif
1127
1128 #ifdef NAN
1129 #define ECB_NAN NAN
1130 #else
1131 #define ECB_NAN ECB_INFINITY
1132 #endif
1133
1134 /* converts an ieee half/binary16 to a float */
1135 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1136 ecb_function_ float
1137 ecb_binary16_to_float (uint16_t x)
1138 {
1139 int e = (x >> 10) & 0x1f;
1140 int m = x & 0x3ff;
1141 float r;
1142
1143 if (!e ) r = ldexpf (m , -24);
1144 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1145 else if (m ) r = ECB_NAN;
1146 else r = ECB_INFINITY;
1147
1148 return x & 0x8000 ? -r : r;
1149 }
1150
1151 /* convert a float to ieee single/binary32 */
1152 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1153 ecb_function_ uint32_t
1154 ecb_float_to_binary32 (float x)
1155 {
1156 uint32_t r;
1157
1158 #if ECB_STDFP
1159 memcpy (&r, &x, 4);
1160 #else
1161 /* slow emulation, works for anything but -0 */
1162 uint32_t m;
1163 int e;
1164
1165 if (x == 0e0f ) return 0x00000000U;
1166 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1167 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1168 if (x != x ) return 0x7fbfffffU;
1169
1170 m = frexpf (x, &e) * 0x1000000U;
1171
1172 r = m & 0x80000000U;
1173
1174 if (r)
1175 m = -m;
1176
1177 if (e <= -126)
1178 {
1179 m &= 0xffffffU;
1180 m >>= (-125 - e);
1181 e = -126;
1182 }
1183
1184 r |= (e + 126) << 23;
1185 r |= m & 0x7fffffU;
1186 #endif
1187
1188 return r;
1189 }
1190
1191 /* converts an ieee single/binary32 to a float */
1192 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1193 ecb_function_ float
1194 ecb_binary32_to_float (uint32_t x)
1195 {
1196 float r;
1197
1198 #if ECB_STDFP
1199 memcpy (&r, &x, 4);
1200 #else
1201 /* emulation, only works for normals and subnormals and +0 */
1202 int neg = x >> 31;
1203 int e = (x >> 23) & 0xffU;
1204
1205 x &= 0x7fffffU;
1206
1207 if (e)
1208 x |= 0x800000U;
1209 else
1210 e = 1;
1211
1212 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1213 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1214
1215 r = neg ? -r : r;
1216 #endif
1217
1218 return r;
1219 }
1220
1221 /* convert a double to ieee double/binary64 */
1222 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1223 ecb_function_ uint64_t
1224 ecb_double_to_binary64 (double x)
1225 {
1226 uint64_t r;
1227
1228 #if ECB_STDFP
1229 memcpy (&r, &x, 8);
1230 #else
1231 /* slow emulation, works for anything but -0 */
1232 uint64_t m;
1233 int e;
1234
1235 if (x == 0e0 ) return 0x0000000000000000U;
1236 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1237 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1238 if (x != x ) return 0X7ff7ffffffffffffU;
1239
1240 m = frexp (x, &e) * 0x20000000000000U;
1241
1242 r = m & 0x8000000000000000;;
1243
1244 if (r)
1245 m = -m;
1246
1247 if (e <= -1022)
1248 {
1249 m &= 0x1fffffffffffffU;
1250 m >>= (-1021 - e);
1251 e = -1022;
1252 }
1253
1254 r |= ((uint64_t)(e + 1022)) << 52;
1255 r |= m & 0xfffffffffffffU;
1256 #endif
1257
1258 return r;
1259 }
1260
1261 /* converts an ieee double/binary64 to a double */
1262 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1263 ecb_function_ double
1264 ecb_binary64_to_double (uint64_t x)
1265 {
1266 double r;
1267
1268 #if ECB_STDFP
1269 memcpy (&r, &x, 8);
1270 #else
1271 /* emulation, only works for normals and subnormals and +0 */
1272 int neg = x >> 63;
1273 int e = (x >> 52) & 0x7ffU;
1274
1275 x &= 0xfffffffffffffU;
1276
1277 if (e)
1278 x |= 0x10000000000000U;
1279 else
1280 e = 1;
1281
1282 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1283 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1284
1285 r = neg ? -r : r;
1286 #endif
1287
1288 return r;
1289 }
1290
1291#endif
1292
1293#endif
1294
1295/* ECB.H END */
1296
1297#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1298/* if your architecture doesn't need memory fences, e.g. because it is
1299 * single-cpu/core, or if you use libev in a project that doesn't use libev
1300 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1301 * libev, in which cases the memory fences become nops.
1302 * alternatively, you can remove this #error and link against libpthread,
1303 * which will then provide the memory fences.
1304 */
1305# error "memory fences not defined for your architecture, please report"
1306#endif
1307
1308#ifndef ECB_MEMORY_FENCE
1309# define ECB_MEMORY_FENCE do { } while (0)
1310# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1311# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1312#endif
1313
1314#define expect_false(cond) ecb_expect_false (cond)
1315#define expect_true(cond) ecb_expect_true (cond)
1316#define noinline ecb_noinline
1317
388#define inline_size static inline 1318#define inline_size ecb_inline
389 1319
390#if EV_MINIMAL 1320#if EV_FEATURE_CODE
1321# define inline_speed ecb_inline
1322#else
391# define inline_speed static noinline 1323# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 1324#endif
395 1325
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1326#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1327
398#if EV_MINPRI == EV_MAXPRI 1328#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 1341#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1342#define ev_at(w) ((WT)(w))->at
413 1343
414#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1345/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 1346/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1347static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1348#endif
419 1349
420#if EV_USE_MONOTONIC 1350#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1351static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1352#endif
423 1353
1354#ifndef EV_FD_TO_WIN32_HANDLE
1355# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1356#endif
1357#ifndef EV_WIN32_HANDLE_TO_FD
1358# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1359#endif
1360#ifndef EV_WIN32_CLOSE_FD
1361# define EV_WIN32_CLOSE_FD(fd) close (fd)
1362#endif
1363
424#ifdef _WIN32 1364#ifdef _WIN32
425# include "ev_win32.c" 1365# include "ev_win32.c"
426#endif 1366#endif
427 1367
428/*****************************************************************************/ 1368/*****************************************************************************/
429 1369
1370/* define a suitable floor function (only used by periodics atm) */
1371
1372#if EV_USE_FLOOR
1373# include <math.h>
1374# define ev_floor(v) floor (v)
1375#else
1376
1377#include <float.h>
1378
1379/* a floor() replacement function, should be independent of ev_tstamp type */
1380static ev_tstamp noinline
1381ev_floor (ev_tstamp v)
1382{
1383 /* the choice of shift factor is not terribly important */
1384#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1385 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1386#else
1387 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1388#endif
1389
1390 /* argument too large for an unsigned long? */
1391 if (expect_false (v >= shift))
1392 {
1393 ev_tstamp f;
1394
1395 if (v == v - 1.)
1396 return v; /* very large number */
1397
1398 f = shift * ev_floor (v * (1. / shift));
1399 return f + ev_floor (v - f);
1400 }
1401
1402 /* special treatment for negative args? */
1403 if (expect_false (v < 0.))
1404 {
1405 ev_tstamp f = -ev_floor (-v);
1406
1407 return f - (f == v ? 0 : 1);
1408 }
1409
1410 /* fits into an unsigned long */
1411 return (unsigned long)v;
1412}
1413
1414#endif
1415
1416/*****************************************************************************/
1417
1418#ifdef __linux
1419# include <sys/utsname.h>
1420#endif
1421
1422static unsigned int noinline ecb_cold
1423ev_linux_version (void)
1424{
1425#ifdef __linux
1426 unsigned int v = 0;
1427 struct utsname buf;
1428 int i;
1429 char *p = buf.release;
1430
1431 if (uname (&buf))
1432 return 0;
1433
1434 for (i = 3+1; --i; )
1435 {
1436 unsigned int c = 0;
1437
1438 for (;;)
1439 {
1440 if (*p >= '0' && *p <= '9')
1441 c = c * 10 + *p++ - '0';
1442 else
1443 {
1444 p += *p == '.';
1445 break;
1446 }
1447 }
1448
1449 v = (v << 8) | c;
1450 }
1451
1452 return v;
1453#else
1454 return 0;
1455#endif
1456}
1457
1458/*****************************************************************************/
1459
1460#if EV_AVOID_STDIO
1461static void noinline ecb_cold
1462ev_printerr (const char *msg)
1463{
1464 write (STDERR_FILENO, msg, strlen (msg));
1465}
1466#endif
1467
430static void (*syserr_cb)(const char *msg); 1468static void (*syserr_cb)(const char *msg) EV_THROW;
431 1469
432void 1470void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1471ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
434{ 1472{
435 syserr_cb = cb; 1473 syserr_cb = cb;
436} 1474}
437 1475
438static void noinline 1476static void noinline ecb_cold
439ev_syserr (const char *msg) 1477ev_syserr (const char *msg)
440{ 1478{
441 if (!msg) 1479 if (!msg)
442 msg = "(libev) system error"; 1480 msg = "(libev) system error";
443 1481
444 if (syserr_cb) 1482 if (syserr_cb)
445 syserr_cb (msg); 1483 syserr_cb (msg);
446 else 1484 else
447 { 1485 {
1486#if EV_AVOID_STDIO
1487 ev_printerr (msg);
1488 ev_printerr (": ");
1489 ev_printerr (strerror (errno));
1490 ev_printerr ("\n");
1491#else
448 perror (msg); 1492 perror (msg);
1493#endif
449 abort (); 1494 abort ();
450 } 1495 }
451} 1496}
452 1497
453static void * 1498static void *
454ev_realloc_emul (void *ptr, long size) 1499ev_realloc_emul (void *ptr, long size) EV_THROW
455{ 1500{
456 /* some systems, notably openbsd and darwin, fail to properly 1501 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1502 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1503 * the single unix specification, so work around them here.
1504 * recently, also (at least) fedora and debian started breaking it,
1505 * despite documenting it otherwise.
459 */ 1506 */
460 1507
461 if (size) 1508 if (size)
462 return realloc (ptr, size); 1509 return realloc (ptr, size);
463 1510
464 free (ptr); 1511 free (ptr);
465 return 0; 1512 return 0;
466} 1513}
467 1514
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1515static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
469 1516
470void 1517void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1518ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
472{ 1519{
473 alloc = cb; 1520 alloc = cb;
474} 1521}
475 1522
476inline_speed void * 1523inline_speed void *
… …
478{ 1525{
479 ptr = alloc (ptr, size); 1526 ptr = alloc (ptr, size);
480 1527
481 if (!ptr && size) 1528 if (!ptr && size)
482 { 1529 {
1530#if EV_AVOID_STDIO
1531 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1532#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1533 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1534#endif
484 abort (); 1535 abort ();
485 } 1536 }
486 1537
487 return ptr; 1538 return ptr;
488} 1539}
… …
504 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1555 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
505 unsigned char unused; 1556 unsigned char unused;
506#if EV_USE_EPOLL 1557#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1558 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1559#endif
509#if EV_SELECT_IS_WINSOCKET 1560#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1561 SOCKET handle;
1562#endif
1563#if EV_USE_IOCP
1564 OVERLAPPED or, ow;
511#endif 1565#endif
512} ANFD; 1566} ANFD;
513 1567
514/* stores the pending event set for a given watcher */ 1568/* stores the pending event set for a given watcher */
515typedef struct 1569typedef struct
… …
557 #undef VAR 1611 #undef VAR
558 }; 1612 };
559 #include "ev_wrap.h" 1613 #include "ev_wrap.h"
560 1614
561 static struct ev_loop default_loop_struct; 1615 static struct ev_loop default_loop_struct;
562 struct ev_loop *ev_default_loop_ptr; 1616 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
563 1617
564#else 1618#else
565 1619
566 ev_tstamp ev_rt_now; 1620 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
567 #define VAR(name,decl) static decl; 1621 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1622 #include "ev_vars.h"
569 #undef VAR 1623 #undef VAR
570 1624
571 static int ev_default_loop_ptr; 1625 static int ev_default_loop_ptr;
572 1626
573#endif 1627#endif
574 1628
575#if EV_MINIMAL < 2 1629#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1630# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1631# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 1632# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 1633#else
580# define EV_RELEASE_CB (void)0 1634# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 1635# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1636# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 1637#endif
584 1638
585#define EVUNLOOP_RECURSE 0x80 1639#define EVBREAK_RECURSE 0x80
586 1640
587/*****************************************************************************/ 1641/*****************************************************************************/
588 1642
589#ifndef EV_HAVE_EV_TIME 1643#ifndef EV_HAVE_EV_TIME
590ev_tstamp 1644ev_tstamp
591ev_time (void) 1645ev_time (void) EV_THROW
592{ 1646{
593#if EV_USE_REALTIME 1647#if EV_USE_REALTIME
594 if (expect_true (have_realtime)) 1648 if (expect_true (have_realtime))
595 { 1649 {
596 struct timespec ts; 1650 struct timespec ts;
… …
620 return ev_time (); 1674 return ev_time ();
621} 1675}
622 1676
623#if EV_MULTIPLICITY 1677#if EV_MULTIPLICITY
624ev_tstamp 1678ev_tstamp
625ev_now (EV_P) 1679ev_now (EV_P) EV_THROW
626{ 1680{
627 return ev_rt_now; 1681 return ev_rt_now;
628} 1682}
629#endif 1683#endif
630 1684
631void 1685void
632ev_sleep (ev_tstamp delay) 1686ev_sleep (ev_tstamp delay) EV_THROW
633{ 1687{
634 if (delay > 0.) 1688 if (delay > 0.)
635 { 1689 {
636#if EV_USE_NANOSLEEP 1690#if EV_USE_NANOSLEEP
637 struct timespec ts; 1691 struct timespec ts;
638 1692
639 ts.tv_sec = (time_t)delay; 1693 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 1694 nanosleep (&ts, 0);
643#elif defined(_WIN32) 1695#elif defined _WIN32
644 Sleep ((unsigned long)(delay * 1e3)); 1696 Sleep ((unsigned long)(delay * 1e3));
645#else 1697#else
646 struct timeval tv; 1698 struct timeval tv;
647 1699
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650
651 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1700 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1701 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 1702 /* by older ones */
1703 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 1704 select (0, 0, 0, 0, &tv);
655#endif 1705#endif
656 } 1706 }
657} 1707}
658 1708
659/*****************************************************************************/ 1709/*****************************************************************************/
660 1710
661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1711#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
662 1712
663/* find a suitable new size for the given array, */ 1713/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 1714/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 1715inline_size int
666array_nextsize (int elem, int cur, int cnt) 1716array_nextsize (int elem, int cur, int cnt)
667{ 1717{
668 int ncur = cur + 1; 1718 int ncur = cur + 1;
669 1719
670 do 1720 do
671 ncur <<= 1; 1721 ncur <<= 1;
672 while (cnt > ncur); 1722 while (cnt > ncur);
673 1723
674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1724 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1725 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 1726 {
677 ncur *= elem; 1727 ncur *= elem;
678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1728 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
679 ncur = ncur - sizeof (void *) * 4; 1729 ncur = ncur - sizeof (void *) * 4;
… …
681 } 1731 }
682 1732
683 return ncur; 1733 return ncur;
684} 1734}
685 1735
686static noinline void * 1736static void * noinline ecb_cold
687array_realloc (int elem, void *base, int *cur, int cnt) 1737array_realloc (int elem, void *base, int *cur, int cnt)
688{ 1738{
689 *cur = array_nextsize (elem, *cur, cnt); 1739 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 1740 return ev_realloc (base, elem * *cur);
691} 1741}
… …
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1744 memset ((void *)(base), 0, sizeof (*(base)) * (count))
695 1745
696#define array_needsize(type,base,cur,cnt,init) \ 1746#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 1747 if (expect_false ((cnt) > (cur))) \
698 { \ 1748 { \
699 int ocur_ = (cur); \ 1749 int ecb_unused ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 1750 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 1751 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 1752 init ((base) + (ocur_), (cur) - ocur_); \
703 } 1753 }
704 1754
… …
722pendingcb (EV_P_ ev_prepare *w, int revents) 1772pendingcb (EV_P_ ev_prepare *w, int revents)
723{ 1773{
724} 1774}
725 1775
726void noinline 1776void noinline
727ev_feed_event (EV_P_ void *w, int revents) 1777ev_feed_event (EV_P_ void *w, int revents) EV_THROW
728{ 1778{
729 W w_ = (W)w; 1779 W w_ = (W)w;
730 int pri = ABSPRI (w_); 1780 int pri = ABSPRI (w_);
731 1781
732 if (expect_false (w_->pending)) 1782 if (expect_false (w_->pending))
… …
736 w_->pending = ++pendingcnt [pri]; 1786 w_->pending = ++pendingcnt [pri];
737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1787 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
738 pendings [pri][w_->pending - 1].w = w_; 1788 pendings [pri][w_->pending - 1].w = w_;
739 pendings [pri][w_->pending - 1].events = revents; 1789 pendings [pri][w_->pending - 1].events = revents;
740 } 1790 }
1791
1792 pendingpri = NUMPRI - 1;
741} 1793}
742 1794
743inline_speed void 1795inline_speed void
744feed_reverse (EV_P_ W w) 1796feed_reverse (EV_P_ W w)
745{ 1797{
… …
765} 1817}
766 1818
767/*****************************************************************************/ 1819/*****************************************************************************/
768 1820
769inline_speed void 1821inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 1822fd_event_nocheck (EV_P_ int fd, int revents)
771{ 1823{
772 ANFD *anfd = anfds + fd; 1824 ANFD *anfd = anfds + fd;
773 ev_io *w; 1825 ev_io *w;
774 1826
775 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1827 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
787fd_event (EV_P_ int fd, int revents) 1839fd_event (EV_P_ int fd, int revents)
788{ 1840{
789 ANFD *anfd = anfds + fd; 1841 ANFD *anfd = anfds + fd;
790 1842
791 if (expect_true (!anfd->reify)) 1843 if (expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 1844 fd_event_nocheck (EV_A_ fd, revents);
793} 1845}
794 1846
795void 1847void
796ev_feed_fd_event (EV_P_ int fd, int revents) 1848ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
797{ 1849{
798 if (fd >= 0 && fd < anfdmax) 1850 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 1851 fd_event_nocheck (EV_A_ fd, revents);
800} 1852}
801 1853
802/* make sure the external fd watch events are in-sync */ 1854/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 1855/* with the kernel/libev internal state */
804inline_size void 1856inline_size void
805fd_reify (EV_P) 1857fd_reify (EV_P)
806{ 1858{
807 int i; 1859 int i;
808 1860
1861#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1862 for (i = 0; i < fdchangecnt; ++i)
1863 {
1864 int fd = fdchanges [i];
1865 ANFD *anfd = anfds + fd;
1866
1867 if (anfd->reify & EV__IOFDSET && anfd->head)
1868 {
1869 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1870
1871 if (handle != anfd->handle)
1872 {
1873 unsigned long arg;
1874
1875 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1876
1877 /* handle changed, but fd didn't - we need to do it in two steps */
1878 backend_modify (EV_A_ fd, anfd->events, 0);
1879 anfd->events = 0;
1880 anfd->handle = handle;
1881 }
1882 }
1883 }
1884#endif
1885
809 for (i = 0; i < fdchangecnt; ++i) 1886 for (i = 0; i < fdchangecnt; ++i)
810 { 1887 {
811 int fd = fdchanges [i]; 1888 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 1889 ANFD *anfd = anfds + fd;
813 ev_io *w; 1890 ev_io *w;
814 1891
815 unsigned char events = 0; 1892 unsigned char o_events = anfd->events;
1893 unsigned char o_reify = anfd->reify;
816 1894
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1895 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 1896
820#if EV_SELECT_IS_WINSOCKET 1897 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 1898 {
823 unsigned long arg; 1899 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 1900
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1901 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 1902 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 1903
828 #endif 1904 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1905 o_reify = EV__IOFDSET; /* actually |= */
830 } 1906 }
831#endif
832 1907
833 { 1908 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 1909 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 1910 }
844 1911
845 fdchangecnt = 0; 1912 fdchangecnt = 0;
846} 1913}
847 1914
… …
859 fdchanges [fdchangecnt - 1] = fd; 1926 fdchanges [fdchangecnt - 1] = fd;
860 } 1927 }
861} 1928}
862 1929
863/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1930/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
864inline_speed void 1931inline_speed void ecb_cold
865fd_kill (EV_P_ int fd) 1932fd_kill (EV_P_ int fd)
866{ 1933{
867 ev_io *w; 1934 ev_io *w;
868 1935
869 while ((w = (ev_io *)anfds [fd].head)) 1936 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 1938 ev_io_stop (EV_A_ w);
872 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1939 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
873 } 1940 }
874} 1941}
875 1942
876/* check whether the given fd is atcually valid, for error recovery */ 1943/* check whether the given fd is actually valid, for error recovery */
877inline_size int 1944inline_size int ecb_cold
878fd_valid (int fd) 1945fd_valid (int fd)
879{ 1946{
880#ifdef _WIN32 1947#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 1948 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 1949#else
883 return fcntl (fd, F_GETFD) != -1; 1950 return fcntl (fd, F_GETFD) != -1;
884#endif 1951#endif
885} 1952}
886 1953
887/* called on EBADF to verify fds */ 1954/* called on EBADF to verify fds */
888static void noinline 1955static void noinline ecb_cold
889fd_ebadf (EV_P) 1956fd_ebadf (EV_P)
890{ 1957{
891 int fd; 1958 int fd;
892 1959
893 for (fd = 0; fd < anfdmax; ++fd) 1960 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 1962 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 1963 fd_kill (EV_A_ fd);
897} 1964}
898 1965
899/* called on ENOMEM in select/poll to kill some fds and retry */ 1966/* called on ENOMEM in select/poll to kill some fds and retry */
900static void noinline 1967static void noinline ecb_cold
901fd_enomem (EV_P) 1968fd_enomem (EV_P)
902{ 1969{
903 int fd; 1970 int fd;
904 1971
905 for (fd = anfdmax; fd--; ) 1972 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 1973 if (anfds [fd].events)
907 { 1974 {
908 fd_kill (EV_A_ fd); 1975 fd_kill (EV_A_ fd);
909 return; 1976 break;
910 } 1977 }
911} 1978}
912 1979
913/* usually called after fork if backend needs to re-arm all fds from scratch */ 1980/* usually called after fork if backend needs to re-arm all fds from scratch */
914static void noinline 1981static void noinline
… …
923 anfds [fd].emask = 0; 1990 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1991 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 1992 }
926} 1993}
927 1994
1995/* used to prepare libev internal fd's */
1996/* this is not fork-safe */
1997inline_speed void
1998fd_intern (int fd)
1999{
2000#ifdef _WIN32
2001 unsigned long arg = 1;
2002 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2003#else
2004 fcntl (fd, F_SETFD, FD_CLOEXEC);
2005 fcntl (fd, F_SETFL, O_NONBLOCK);
2006#endif
2007}
2008
928/*****************************************************************************/ 2009/*****************************************************************************/
929 2010
930/* 2011/*
931 * the heap functions want a real array index. array index 0 uis guaranteed to not 2012 * the heap functions want a real array index. array index 0 is guaranteed to not
932 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2013 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
933 * the branching factor of the d-tree. 2014 * the branching factor of the d-tree.
934 */ 2015 */
935 2016
936/* 2017/*
… …
1004 2085
1005 for (;;) 2086 for (;;)
1006 { 2087 {
1007 int c = k << 1; 2088 int c = k << 1;
1008 2089
1009 if (c > N + HEAP0 - 1) 2090 if (c >= N + HEAP0)
1010 break; 2091 break;
1011 2092
1012 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2093 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013 ? 1 : 0; 2094 ? 1 : 0;
1014 2095
… …
1050 2131
1051/* move an element suitably so it is in a correct place */ 2132/* move an element suitably so it is in a correct place */
1052inline_size void 2133inline_size void
1053adjustheap (ANHE *heap, int N, int k) 2134adjustheap (ANHE *heap, int N, int k)
1054{ 2135{
1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2136 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056 upheap (heap, k); 2137 upheap (heap, k);
1057 else 2138 else
1058 downheap (heap, N, k); 2139 downheap (heap, N, k);
1059} 2140}
1060 2141
… …
1073/*****************************************************************************/ 2154/*****************************************************************************/
1074 2155
1075/* associate signal watchers to a signal signal */ 2156/* associate signal watchers to a signal signal */
1076typedef struct 2157typedef struct
1077{ 2158{
2159 EV_ATOMIC_T pending;
2160#if EV_MULTIPLICITY
2161 EV_P;
2162#endif
1078 WL head; 2163 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 2164} ANSIG;
1081 2165
1082static ANSIG *signals; 2166static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 2167
1087/*****************************************************************************/ 2168/*****************************************************************************/
1088 2169
1089/* used to prepare libev internal fd's */ 2170#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* this is not fork-safe */ 2171
2172static void noinline ecb_cold
2173evpipe_init (EV_P)
2174{
2175 if (!ev_is_active (&pipe_w))
2176 {
2177 int fds [2];
2178
2179# if EV_USE_EVENTFD
2180 fds [0] = -1;
2181 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2182 if (fds [1] < 0 && errno == EINVAL)
2183 fds [1] = eventfd (0, 0);
2184
2185 if (fds [1] < 0)
2186# endif
2187 {
2188 while (pipe (fds))
2189 ev_syserr ("(libev) error creating signal/async pipe");
2190
2191 fd_intern (fds [0]);
2192 }
2193
2194 evpipe [0] = fds [0];
2195
2196 if (evpipe [1] < 0)
2197 evpipe [1] = fds [1]; /* first call, set write fd */
2198 else
2199 {
2200 /* on subsequent calls, do not change evpipe [1] */
2201 /* so that evpipe_write can always rely on its value. */
2202 /* this branch does not do anything sensible on windows, */
2203 /* so must not be executed on windows */
2204
2205 dup2 (fds [1], evpipe [1]);
2206 close (fds [1]);
2207 }
2208
2209 fd_intern (evpipe [1]);
2210
2211 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2212 ev_io_start (EV_A_ &pipe_w);
2213 ev_unref (EV_A); /* watcher should not keep loop alive */
2214 }
2215}
2216
1091inline_speed void 2217inline_speed void
1092fd_intern (int fd) 2218evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 2219{
1094#ifdef _WIN32 2220 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 2221
1103static void noinline 2222 if (expect_true (*flag))
1104evpipe_init (EV_P) 2223 return;
1105{ 2224
1106 if (!ev_is_active (&pipe_w)) 2225 *flag = 1;
2226 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2227
2228 pipe_write_skipped = 1;
2229
2230 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2231
2232 if (pipe_write_wanted)
1107 { 2233 {
2234 int old_errno;
2235
2236 pipe_write_skipped = 0;
2237 ECB_MEMORY_FENCE_RELEASE;
2238
2239 old_errno = errno; /* save errno because write will clobber it */
2240
1108#if EV_USE_EVENTFD 2241#if EV_USE_EVENTFD
1109 if ((evfd = eventfd (0, 0)) >= 0) 2242 if (evpipe [0] < 0)
1110 { 2243 {
1111 evpipe [0] = -1; 2244 uint64_t counter = 1;
1112 fd_intern (evfd); 2245 write (evpipe [1], &counter, sizeof (uint64_t));
1113 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 2246 }
1115 else 2247 else
1116#endif 2248#endif
1117 { 2249 {
1118 while (pipe (evpipe)) 2250#ifdef _WIN32
1119 ev_syserr ("(libev) error creating signal/async pipe"); 2251 WSABUF buf;
1120 2252 DWORD sent;
1121 fd_intern (evpipe [0]); 2253 buf.buf = &buf;
1122 fd_intern (evpipe [1]); 2254 buf.len = 1;
1123 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2255 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2256#else
2257 write (evpipe [1], &(evpipe [1]), 1);
2258#endif
1124 } 2259 }
1125
1126 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 }
1129}
1130
1131inline_size void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{
1134 if (!*flag)
1135 {
1136 int old_errno = errno; /* save errno because write might clobber it */
1137
1138 *flag = 1;
1139
1140#if EV_USE_EVENTFD
1141 if (evfd >= 0)
1142 {
1143 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t));
1145 }
1146 else
1147#endif
1148 write (evpipe [1], &old_errno, 1);
1149 2260
1150 errno = old_errno; 2261 errno = old_errno;
1151 } 2262 }
1152} 2263}
1153 2264
1154/* called whenever the libev signal pipe */ 2265/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 2266/* got some events (signal, async) */
1156static void 2267static void
1157pipecb (EV_P_ ev_io *iow, int revents) 2268pipecb (EV_P_ ev_io *iow, int revents)
1158{ 2269{
2270 int i;
2271
2272 if (revents & EV_READ)
2273 {
1159#if EV_USE_EVENTFD 2274#if EV_USE_EVENTFD
1160 if (evfd >= 0) 2275 if (evpipe [0] < 0)
1161 { 2276 {
1162 uint64_t counter; 2277 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 2278 read (evpipe [1], &counter, sizeof (uint64_t));
1164 } 2279 }
1165 else 2280 else
1166#endif 2281#endif
1167 { 2282 {
1168 char dummy; 2283 char dummy[4];
2284#ifdef _WIN32
2285 WSABUF buf;
2286 DWORD recvd;
2287 DWORD flags = 0;
2288 buf.buf = dummy;
2289 buf.len = sizeof (dummy);
2290 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2291#else
1169 read (evpipe [0], &dummy, 1); 2292 read (evpipe [0], &dummy, sizeof (dummy));
2293#endif
2294 }
2295 }
2296
2297 pipe_write_skipped = 0;
2298
2299 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2300
2301#if EV_SIGNAL_ENABLE
2302 if (sig_pending)
1170 } 2303 {
2304 sig_pending = 0;
1171 2305
1172 if (gotsig && ev_is_default_loop (EV_A)) 2306 ECB_MEMORY_FENCE;
1173 {
1174 int signum;
1175 gotsig = 0;
1176 2307
1177 for (signum = signalmax; signum--; ) 2308 for (i = EV_NSIG - 1; i--; )
1178 if (signals [signum].gotsig) 2309 if (expect_false (signals [i].pending))
1179 ev_feed_signal_event (EV_A_ signum + 1); 2310 ev_feed_signal_event (EV_A_ i + 1);
1180 } 2311 }
2312#endif
1181 2313
1182#if EV_ASYNC_ENABLE 2314#if EV_ASYNC_ENABLE
1183 if (gotasync) 2315 if (async_pending)
1184 { 2316 {
1185 int i; 2317 async_pending = 0;
1186 gotasync = 0; 2318
2319 ECB_MEMORY_FENCE;
1187 2320
1188 for (i = asynccnt; i--; ) 2321 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 2322 if (asyncs [i]->sent)
1190 { 2323 {
1191 asyncs [i]->sent = 0; 2324 asyncs [i]->sent = 0;
2325 ECB_MEMORY_FENCE_RELEASE;
1192 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2326 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1193 } 2327 }
1194 } 2328 }
1195#endif 2329#endif
1196} 2330}
1197 2331
1198/*****************************************************************************/ 2332/*****************************************************************************/
1199 2333
2334void
2335ev_feed_signal (int signum) EV_THROW
2336{
2337#if EV_MULTIPLICITY
2338 EV_P;
2339 ECB_MEMORY_FENCE_ACQUIRE;
2340 EV_A = signals [signum - 1].loop;
2341
2342 if (!EV_A)
2343 return;
2344#endif
2345
2346 signals [signum - 1].pending = 1;
2347 evpipe_write (EV_A_ &sig_pending);
2348}
2349
1200static void 2350static void
1201ev_sighandler (int signum) 2351ev_sighandler (int signum)
1202{ 2352{
2353#ifdef _WIN32
2354 signal (signum, ev_sighandler);
2355#endif
2356
2357 ev_feed_signal (signum);
2358}
2359
2360void noinline
2361ev_feed_signal_event (EV_P_ int signum) EV_THROW
2362{
2363 WL w;
2364
2365 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2366 return;
2367
2368 --signum;
2369
1203#if EV_MULTIPLICITY 2370#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct; 2371 /* it is permissible to try to feed a signal to the wrong loop */
1205#endif 2372 /* or, likely more useful, feeding a signal nobody is waiting for */
1206 2373
1207#if _WIN32 2374 if (expect_false (signals [signum].loop != EV_A))
1208 signal (signum, ev_sighandler);
1209#endif
1210
1211 signals [signum - 1].gotsig = 1;
1212 evpipe_write (EV_A_ &gotsig);
1213}
1214
1215void noinline
1216ev_feed_signal_event (EV_P_ int signum)
1217{
1218 WL w;
1219
1220#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1222#endif
1223
1224 --signum;
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 2375 return;
2376#endif
1228 2377
1229 signals [signum].gotsig = 0; 2378 signals [signum].pending = 0;
2379 ECB_MEMORY_FENCE_RELEASE;
1230 2380
1231 for (w = signals [signum].head; w; w = w->next) 2381 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2382 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 2383}
1234 2384
2385#if EV_USE_SIGNALFD
2386static void
2387sigfdcb (EV_P_ ev_io *iow, int revents)
2388{
2389 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2390
2391 for (;;)
2392 {
2393 ssize_t res = read (sigfd, si, sizeof (si));
2394
2395 /* not ISO-C, as res might be -1, but works with SuS */
2396 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2397 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2398
2399 if (res < (ssize_t)sizeof (si))
2400 break;
2401 }
2402}
2403#endif
2404
2405#endif
2406
1235/*****************************************************************************/ 2407/*****************************************************************************/
1236 2408
2409#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 2410static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 2411
1241static ev_signal childev; 2412static ev_signal childev;
1242 2413
1243#ifndef WIFCONTINUED 2414#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 2415# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 2420child_reap (EV_P_ int chain, int pid, int status)
1250{ 2421{
1251 ev_child *w; 2422 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2423 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 2424
1254 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2425 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1255 { 2426 {
1256 if ((w->pid == pid || !w->pid) 2427 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 2428 && (!traced || (w->flags & 1)))
1258 { 2429 {
1259 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2430 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1284 /* make sure we are called again until all children have been reaped */ 2455 /* make sure we are called again until all children have been reaped */
1285 /* we need to do it this way so that the callback gets called before we continue */ 2456 /* we need to do it this way so that the callback gets called before we continue */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2457 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2458
1288 child_reap (EV_A_ pid, pid, status); 2459 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2460 if ((EV_PID_HASHSIZE) > 1)
1290 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2461 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1291} 2462}
1292 2463
1293#endif 2464#endif
1294 2465
1295/*****************************************************************************/ 2466/*****************************************************************************/
1296 2467
2468#if EV_USE_IOCP
2469# include "ev_iocp.c"
2470#endif
1297#if EV_USE_PORT 2471#if EV_USE_PORT
1298# include "ev_port.c" 2472# include "ev_port.c"
1299#endif 2473#endif
1300#if EV_USE_KQUEUE 2474#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2475# include "ev_kqueue.c"
… …
1308#endif 2482#endif
1309#if EV_USE_SELECT 2483#if EV_USE_SELECT
1310# include "ev_select.c" 2484# include "ev_select.c"
1311#endif 2485#endif
1312 2486
1313int 2487int ecb_cold
1314ev_version_major (void) 2488ev_version_major (void) EV_THROW
1315{ 2489{
1316 return EV_VERSION_MAJOR; 2490 return EV_VERSION_MAJOR;
1317} 2491}
1318 2492
1319int 2493int ecb_cold
1320ev_version_minor (void) 2494ev_version_minor (void) EV_THROW
1321{ 2495{
1322 return EV_VERSION_MINOR; 2496 return EV_VERSION_MINOR;
1323} 2497}
1324 2498
1325/* return true if we are running with elevated privileges and should ignore env variables */ 2499/* return true if we are running with elevated privileges and should ignore env variables */
1326int inline_size 2500int inline_size ecb_cold
1327enable_secure (void) 2501enable_secure (void)
1328{ 2502{
1329#ifdef _WIN32 2503#ifdef _WIN32
1330 return 0; 2504 return 0;
1331#else 2505#else
1332 return getuid () != geteuid () 2506 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2507 || getgid () != getegid ();
1334#endif 2508#endif
1335} 2509}
1336 2510
1337unsigned int 2511unsigned int ecb_cold
1338ev_supported_backends (void) 2512ev_supported_backends (void) EV_THROW
1339{ 2513{
1340 unsigned int flags = 0; 2514 unsigned int flags = 0;
1341 2515
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2516 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1343 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2517 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2520 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1347 2521
1348 return flags; 2522 return flags;
1349} 2523}
1350 2524
1351unsigned int 2525unsigned int ecb_cold
1352ev_recommended_backends (void) 2526ev_recommended_backends (void) EV_THROW
1353{ 2527{
1354 unsigned int flags = ev_supported_backends (); 2528 unsigned int flags = ev_supported_backends ();
1355 2529
1356#ifndef __NetBSD__ 2530#ifndef __NetBSD__
1357 /* kqueue is borked on everything but netbsd apparently */ 2531 /* kqueue is borked on everything but netbsd apparently */
… …
1361#ifdef __APPLE__ 2535#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2536 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2537 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2538 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1365#endif 2539#endif
2540#ifdef __FreeBSD__
2541 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2542#endif
1366 2543
1367 return flags; 2544 return flags;
1368} 2545}
1369 2546
2547unsigned int ecb_cold
2548ev_embeddable_backends (void) EV_THROW
2549{
2550 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2551
2552 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2553 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2554 flags &= ~EVBACKEND_EPOLL;
2555
2556 return flags;
2557}
2558
1370unsigned int 2559unsigned int
1371ev_embeddable_backends (void) 2560ev_backend (EV_P) EV_THROW
1372{ 2561{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2562 return backend;
1374
1375 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1376 /* please fix it and tell me how to detect the fix */
1377 flags &= ~EVBACKEND_EPOLL;
1378
1379 return flags;
1380} 2563}
1381 2564
2565#if EV_FEATURE_API
1382unsigned int 2566unsigned int
1383ev_backend (EV_P) 2567ev_iteration (EV_P) EV_THROW
1384{ 2568{
1385 return backend; 2569 return loop_count;
1386} 2570}
1387 2571
1388#if EV_MINIMAL < 2
1389unsigned int 2572unsigned int
1390ev_loop_count (EV_P) 2573ev_depth (EV_P) EV_THROW
1391{
1392 return loop_count;
1393}
1394
1395unsigned int
1396ev_loop_depth (EV_P)
1397{ 2574{
1398 return loop_depth; 2575 return loop_depth;
1399} 2576}
1400 2577
1401void 2578void
1402ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2579ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1403{ 2580{
1404 io_blocktime = interval; 2581 io_blocktime = interval;
1405} 2582}
1406 2583
1407void 2584void
1408ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2585ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1409{ 2586{
1410 timeout_blocktime = interval; 2587 timeout_blocktime = interval;
1411} 2588}
1412 2589
1413void 2590void
1414ev_set_userdata (EV_P_ void *data) 2591ev_set_userdata (EV_P_ void *data) EV_THROW
1415{ 2592{
1416 userdata = data; 2593 userdata = data;
1417} 2594}
1418 2595
1419void * 2596void *
1420ev_userdata (EV_P) 2597ev_userdata (EV_P) EV_THROW
1421{ 2598{
1422 return userdata; 2599 return userdata;
1423} 2600}
1424 2601
2602void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2603ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1426{ 2604{
1427 invoke_cb = invoke_pending_cb; 2605 invoke_cb = invoke_pending_cb;
1428} 2606}
1429 2607
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2608void
2609ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
1431{ 2610{
1432 release_cb = release; 2611 release_cb = release;
1433 acquire_cb = acquire; 2612 acquire_cb = acquire;
1434} 2613}
1435#endif 2614#endif
1436 2615
1437/* initialise a loop structure, must be zero-initialised */ 2616/* initialise a loop structure, must be zero-initialised */
1438static void noinline 2617static void noinline ecb_cold
1439loop_init (EV_P_ unsigned int flags) 2618loop_init (EV_P_ unsigned int flags) EV_THROW
1440{ 2619{
1441 if (!backend) 2620 if (!backend)
1442 { 2621 {
2622 origflags = flags;
2623
1443#if EV_USE_REALTIME 2624#if EV_USE_REALTIME
1444 if (!have_realtime) 2625 if (!have_realtime)
1445 { 2626 {
1446 struct timespec ts; 2627 struct timespec ts;
1447 2628
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2639 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 2640 have_monotonic = 1;
1460 } 2641 }
1461#endif 2642#endif
1462 2643
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 2644 /* pid check not overridable via env */
1481#ifndef _WIN32 2645#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 2646 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 2647 curpid = getpid ();
1484#endif 2648#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 2650 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 2651 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 2652 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 2653 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 2654
1491 if (!(flags & 0x0000ffffU)) 2655 ev_rt_now = ev_time ();
2656 mn_now = get_clock ();
2657 now_floor = mn_now;
2658 rtmn_diff = ev_rt_now - mn_now;
2659#if EV_FEATURE_API
2660 invoke_cb = ev_invoke_pending;
2661#endif
2662
2663 io_blocktime = 0.;
2664 timeout_blocktime = 0.;
2665 backend = 0;
2666 backend_fd = -1;
2667 sig_pending = 0;
2668#if EV_ASYNC_ENABLE
2669 async_pending = 0;
2670#endif
2671 pipe_write_skipped = 0;
2672 pipe_write_wanted = 0;
2673 evpipe [0] = -1;
2674 evpipe [1] = -1;
2675#if EV_USE_INOTIFY
2676 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2677#endif
2678#if EV_USE_SIGNALFD
2679 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2680#endif
2681
2682 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 2683 flags |= ev_recommended_backends ();
1493 2684
2685#if EV_USE_IOCP
2686 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2687#endif
1494#if EV_USE_PORT 2688#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2689 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 2690#endif
1497#if EV_USE_KQUEUE 2691#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2692 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2701 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1508#endif 2702#endif
1509 2703
1510 ev_prepare_init (&pending_w, pendingcb); 2704 ev_prepare_init (&pending_w, pendingcb);
1511 2705
2706#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 2707 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 2708 ev_set_priority (&pipe_w, EV_MAXPRI);
2709#endif
1514 } 2710 }
1515} 2711}
1516 2712
1517/* free up a loop structure */ 2713/* free up a loop structure */
1518static void noinline 2714void ecb_cold
1519loop_destroy (EV_P) 2715ev_loop_destroy (EV_P)
1520{ 2716{
1521 int i; 2717 int i;
1522 2718
2719#if EV_MULTIPLICITY
2720 /* mimic free (0) */
2721 if (!EV_A)
2722 return;
2723#endif
2724
2725#if EV_CLEANUP_ENABLE
2726 /* queue cleanup watchers (and execute them) */
2727 if (expect_false (cleanupcnt))
2728 {
2729 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2730 EV_INVOKE_PENDING;
2731 }
2732#endif
2733
2734#if EV_CHILD_ENABLE
2735 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2736 {
2737 ev_ref (EV_A); /* child watcher */
2738 ev_signal_stop (EV_A_ &childev);
2739 }
2740#endif
2741
1523 if (ev_is_active (&pipe_w)) 2742 if (ev_is_active (&pipe_w))
1524 { 2743 {
1525 ev_ref (EV_A); /* signal watcher */ 2744 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 2745 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 2746
2747 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2748 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2749 }
2750
1528#if EV_USE_EVENTFD 2751#if EV_USE_SIGNALFD
1529 if (evfd >= 0) 2752 if (ev_is_active (&sigfd_w))
1530 close (evfd); 2753 close (sigfd);
1531#endif 2754#endif
1532
1533 if (evpipe [0] >= 0)
1534 {
1535 close (evpipe [0]);
1536 close (evpipe [1]);
1537 }
1538 }
1539 2755
1540#if EV_USE_INOTIFY 2756#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 2757 if (fs_fd >= 0)
1542 close (fs_fd); 2758 close (fs_fd);
1543#endif 2759#endif
1544 2760
1545 if (backend_fd >= 0) 2761 if (backend_fd >= 0)
1546 close (backend_fd); 2762 close (backend_fd);
1547 2763
2764#if EV_USE_IOCP
2765 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2766#endif
1548#if EV_USE_PORT 2767#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2768 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 2769#endif
1551#if EV_USE_KQUEUE 2770#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2771 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1567#if EV_IDLE_ENABLE 2786#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 2787 array_free (idle, [i]);
1569#endif 2788#endif
1570 } 2789 }
1571 2790
1572 ev_free (anfds); anfdmax = 0; 2791 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 2792
1574 /* have to use the microsoft-never-gets-it-right macro */ 2793 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 2794 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 2795 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 2796 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 2798 array_free (periodic, EMPTY);
1580#endif 2799#endif
1581#if EV_FORK_ENABLE 2800#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 2801 array_free (fork, EMPTY);
1583#endif 2802#endif
2803#if EV_CLEANUP_ENABLE
2804 array_free (cleanup, EMPTY);
2805#endif
1584 array_free (prepare, EMPTY); 2806 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 2807 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 2808#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 2809 array_free (async, EMPTY);
1588#endif 2810#endif
1589 2811
1590 backend = 0; 2812 backend = 0;
2813
2814#if EV_MULTIPLICITY
2815 if (ev_is_default_loop (EV_A))
2816#endif
2817 ev_default_loop_ptr = 0;
2818#if EV_MULTIPLICITY
2819 else
2820 ev_free (EV_A);
2821#endif
1591} 2822}
1592 2823
1593#if EV_USE_INOTIFY 2824#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 2825inline_size void infy_fork (EV_P);
1595#endif 2826#endif
… …
1608#endif 2839#endif
1609#if EV_USE_INOTIFY 2840#if EV_USE_INOTIFY
1610 infy_fork (EV_A); 2841 infy_fork (EV_A);
1611#endif 2842#endif
1612 2843
2844#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1613 if (ev_is_active (&pipe_w)) 2845 if (ev_is_active (&pipe_w))
1614 { 2846 {
1615 /* this "locks" the handlers against writing to the pipe */ 2847 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 2848
1622 ev_ref (EV_A); 2849 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 2850 ev_io_stop (EV_A_ &pipe_w);
1624 2851
1625#if EV_USE_EVENTFD
1626 if (evfd >= 0)
1627 close (evfd);
1628#endif
1629
1630 if (evpipe [0] >= 0) 2852 if (evpipe [0] >= 0)
1631 { 2853 EV_WIN32_CLOSE_FD (evpipe [0]);
1632 close (evpipe [0]);
1633 close (evpipe [1]);
1634 }
1635 2854
1636 evpipe_init (EV_A); 2855 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 2856 /* iterate over everything, in case we missed something before */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 2857 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1639 } 2858 }
2859#endif
1640 2860
1641 postfork = 0; 2861 postfork = 0;
1642} 2862}
1643 2863
1644#if EV_MULTIPLICITY 2864#if EV_MULTIPLICITY
1645 2865
1646struct ev_loop * 2866struct ev_loop * ecb_cold
1647ev_loop_new (unsigned int flags) 2867ev_loop_new (unsigned int flags) EV_THROW
1648{ 2868{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2869 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 2870
1651 memset (loop, 0, sizeof (struct ev_loop)); 2871 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 2872 loop_init (EV_A_ flags);
1654 2873
1655 if (ev_backend (EV_A)) 2874 if (ev_backend (EV_A))
1656 return loop; 2875 return EV_A;
1657 2876
2877 ev_free (EV_A);
1658 return 0; 2878 return 0;
1659} 2879}
1660 2880
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 2881#endif /* multiplicity */
1674 2882
1675#if EV_VERIFY 2883#if EV_VERIFY
1676static void noinline 2884static void noinline ecb_cold
1677verify_watcher (EV_P_ W w) 2885verify_watcher (EV_P_ W w)
1678{ 2886{
1679 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2887 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1680 2888
1681 if (w->pending) 2889 if (w->pending)
1682 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2890 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1683} 2891}
1684 2892
1685static void noinline 2893static void noinline ecb_cold
1686verify_heap (EV_P_ ANHE *heap, int N) 2894verify_heap (EV_P_ ANHE *heap, int N)
1687{ 2895{
1688 int i; 2896 int i;
1689 2897
1690 for (i = HEAP0; i < N + HEAP0; ++i) 2898 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 2903
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2904 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 2905 }
1698} 2906}
1699 2907
1700static void noinline 2908static void noinline ecb_cold
1701array_verify (EV_P_ W *ws, int cnt) 2909array_verify (EV_P_ W *ws, int cnt)
1702{ 2910{
1703 while (cnt--) 2911 while (cnt--)
1704 { 2912 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2913 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 2914 verify_watcher (EV_A_ ws [cnt]);
1707 } 2915 }
1708} 2916}
1709#endif 2917#endif
1710 2918
1711#if EV_MINIMAL < 2 2919#if EV_FEATURE_API
1712void 2920void ecb_cold
1713ev_loop_verify (EV_P) 2921ev_verify (EV_P) EV_THROW
1714{ 2922{
1715#if EV_VERIFY 2923#if EV_VERIFY
1716 int i; 2924 int i;
1717 WL w; 2925 WL w, w2;
1718 2926
1719 assert (activecnt >= -1); 2927 assert (activecnt >= -1);
1720 2928
1721 assert (fdchangemax >= fdchangecnt); 2929 assert (fdchangemax >= fdchangecnt);
1722 for (i = 0; i < fdchangecnt; ++i) 2930 for (i = 0; i < fdchangecnt; ++i)
1723 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2931 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1724 2932
1725 assert (anfdmax >= 0); 2933 assert (anfdmax >= 0);
1726 for (i = 0; i < anfdmax; ++i) 2934 for (i = 0; i < anfdmax; ++i)
2935 {
2936 int j = 0;
2937
1727 for (w = anfds [i].head; w; w = w->next) 2938 for (w = w2 = anfds [i].head; w; w = w->next)
1728 { 2939 {
1729 verify_watcher (EV_A_ (W)w); 2940 verify_watcher (EV_A_ (W)w);
2941
2942 if (j++ & 1)
2943 {
2944 assert (("libev: io watcher list contains a loop", w != w2));
2945 w2 = w2->next;
2946 }
2947
1730 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2948 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1731 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2949 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1732 } 2950 }
2951 }
1733 2952
1734 assert (timermax >= timercnt); 2953 assert (timermax >= timercnt);
1735 verify_heap (EV_A_ timers, timercnt); 2954 verify_heap (EV_A_ timers, timercnt);
1736 2955
1737#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
… …
1752#if EV_FORK_ENABLE 2971#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 2972 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 2973 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 2974#endif
1756 2975
2976#if EV_CLEANUP_ENABLE
2977 assert (cleanupmax >= cleanupcnt);
2978 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2979#endif
2980
1757#if EV_ASYNC_ENABLE 2981#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 2982 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 2983 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 2984#endif
1761 2985
2986#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 2987 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 2988 array_verify (EV_A_ (W *)prepares, preparecnt);
2989#endif
1764 2990
2991#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 2992 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 2993 array_verify (EV_A_ (W *)checks, checkcnt);
2994#endif
1767 2995
1768# if 0 2996# if 0
2997#if EV_CHILD_ENABLE
1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2998 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2999 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3000#endif
1771# endif 3001# endif
1772#endif 3002#endif
1773} 3003}
1774#endif 3004#endif
1775 3005
1776#if EV_MULTIPLICITY 3006#if EV_MULTIPLICITY
1777struct ev_loop * 3007struct ev_loop * ecb_cold
1778ev_default_loop_init (unsigned int flags)
1779#else 3008#else
1780int 3009int
3010#endif
1781ev_default_loop (unsigned int flags) 3011ev_default_loop (unsigned int flags) EV_THROW
1782#endif
1783{ 3012{
1784 if (!ev_default_loop_ptr) 3013 if (!ev_default_loop_ptr)
1785 { 3014 {
1786#if EV_MULTIPLICITY 3015#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3016 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 3017#else
1789 ev_default_loop_ptr = 1; 3018 ev_default_loop_ptr = 1;
1790#endif 3019#endif
1791 3020
1792 loop_init (EV_A_ flags); 3021 loop_init (EV_A_ flags);
1793 3022
1794 if (ev_backend (EV_A)) 3023 if (ev_backend (EV_A))
1795 { 3024 {
1796#ifndef _WIN32 3025#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 3026 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 3027 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 3028 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3029 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 3030#endif
… …
1806 3035
1807 return ev_default_loop_ptr; 3036 return ev_default_loop_ptr;
1808} 3037}
1809 3038
1810void 3039void
1811ev_default_destroy (void) 3040ev_loop_fork (EV_P) EV_THROW
1812{ 3041{
1813#if EV_MULTIPLICITY 3042 postfork = 1;
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */
1835} 3043}
1836 3044
1837/*****************************************************************************/ 3045/*****************************************************************************/
1838 3046
1839void 3047void
1840ev_invoke (EV_P_ void *w, int revents) 3048ev_invoke (EV_P_ void *w, int revents)
1841{ 3049{
1842 EV_CB_INVOKE ((W)w, revents); 3050 EV_CB_INVOKE ((W)w, revents);
1843} 3051}
1844 3052
3053unsigned int
3054ev_pending_count (EV_P) EV_THROW
3055{
3056 int pri;
3057 unsigned int count = 0;
3058
3059 for (pri = NUMPRI; pri--; )
3060 count += pendingcnt [pri];
3061
3062 return count;
3063}
3064
1845void noinline 3065void noinline
1846ev_invoke_pending (EV_P) 3066ev_invoke_pending (EV_P)
1847{ 3067{
1848 int pri; 3068 pendingpri = NUMPRI;
1849 3069
1850 for (pri = NUMPRI; pri--; ) 3070 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3071 {
3072 --pendingpri;
3073
1851 while (pendingcnt [pri]) 3074 while (pendingcnt [pendingpri])
1852 { 3075 {
1853 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3076 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1854 3077
1855 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1856 /* ^ this is no longer true, as pending_w could be here */
1857
1858 p->w->pending = 0; 3078 p->w->pending = 0;
1859 EV_CB_INVOKE (p->w, p->events); 3079 EV_CB_INVOKE (p->w, p->events);
1860 EV_FREQUENT_CHECK; 3080 EV_FREQUENT_CHECK;
1861 } 3081 }
3082 }
1862} 3083}
1863 3084
1864#if EV_IDLE_ENABLE 3085#if EV_IDLE_ENABLE
1865/* make idle watchers pending. this handles the "call-idle */ 3086/* make idle watchers pending. this handles the "call-idle */
1866/* only when higher priorities are idle" logic */ 3087/* only when higher priorities are idle" logic */
… …
1918 EV_FREQUENT_CHECK; 3139 EV_FREQUENT_CHECK;
1919 feed_reverse (EV_A_ (W)w); 3140 feed_reverse (EV_A_ (W)w);
1920 } 3141 }
1921 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3142 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1922 3143
1923 feed_reverse_done (EV_A_ EV_TIMEOUT); 3144 feed_reverse_done (EV_A_ EV_TIMER);
1924 } 3145 }
1925} 3146}
1926 3147
1927#if EV_PERIODIC_ENABLE 3148#if EV_PERIODIC_ENABLE
3149
3150static void noinline
3151periodic_recalc (EV_P_ ev_periodic *w)
3152{
3153 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3154 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3155
3156 /* the above almost always errs on the low side */
3157 while (at <= ev_rt_now)
3158 {
3159 ev_tstamp nat = at + w->interval;
3160
3161 /* when resolution fails us, we use ev_rt_now */
3162 if (expect_false (nat == at))
3163 {
3164 at = ev_rt_now;
3165 break;
3166 }
3167
3168 at = nat;
3169 }
3170
3171 ev_at (w) = at;
3172}
3173
1928/* make periodics pending */ 3174/* make periodics pending */
1929inline_size void 3175inline_size void
1930periodics_reify (EV_P) 3176periodics_reify (EV_P)
1931{ 3177{
1932 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
1933 3179
1934 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3180 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1935 { 3181 {
1936 int feed_count = 0;
1937
1938 do 3182 do
1939 { 3183 {
1940 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3184 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1941 3185
1942 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3186 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1951 ANHE_at_cache (periodics [HEAP0]); 3195 ANHE_at_cache (periodics [HEAP0]);
1952 downheap (periodics, periodiccnt, HEAP0); 3196 downheap (periodics, periodiccnt, HEAP0);
1953 } 3197 }
1954 else if (w->interval) 3198 else if (w->interval)
1955 { 3199 {
1956 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3200 periodic_recalc (EV_A_ w);
1957 /* if next trigger time is not sufficiently in the future, put it there */
1958 /* this might happen because of floating point inexactness */
1959 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1960 {
1961 ev_at (w) += w->interval;
1962
1963 /* if interval is unreasonably low we might still have a time in the past */
1964 /* so correct this. this will make the periodic very inexact, but the user */
1965 /* has effectively asked to get triggered more often than possible */
1966 if (ev_at (w) < ev_rt_now)
1967 ev_at (w) = ev_rt_now;
1968 }
1969
1970 ANHE_at_cache (periodics [HEAP0]); 3201 ANHE_at_cache (periodics [HEAP0]);
1971 downheap (periodics, periodiccnt, HEAP0); 3202 downheap (periodics, periodiccnt, HEAP0);
1972 } 3203 }
1973 else 3204 else
1974 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3205 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1981 feed_reverse_done (EV_A_ EV_PERIODIC); 3212 feed_reverse_done (EV_A_ EV_PERIODIC);
1982 } 3213 }
1983} 3214}
1984 3215
1985/* simply recalculate all periodics */ 3216/* simply recalculate all periodics */
1986/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3217/* TODO: maybe ensure that at least one event happens when jumping forward? */
1987static void noinline 3218static void noinline ecb_cold
1988periodics_reschedule (EV_P) 3219periodics_reschedule (EV_P)
1989{ 3220{
1990 int i; 3221 int i;
1991 3222
1992 /* adjust periodics after time jump */ 3223 /* adjust periodics after time jump */
… …
1995 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3226 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1996 3227
1997 if (w->reschedule_cb) 3228 if (w->reschedule_cb)
1998 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3229 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1999 else if (w->interval) 3230 else if (w->interval)
2000 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3231 periodic_recalc (EV_A_ w);
2001 3232
2002 ANHE_at_cache (periodics [i]); 3233 ANHE_at_cache (periodics [i]);
2003 } 3234 }
2004 3235
2005 reheap (periodics, periodiccnt); 3236 reheap (periodics, periodiccnt);
2006} 3237}
2007#endif 3238#endif
2008 3239
2009/* adjust all timers by a given offset */ 3240/* adjust all timers by a given offset */
2010static void noinline 3241static void noinline ecb_cold
2011timers_reschedule (EV_P_ ev_tstamp adjust) 3242timers_reschedule (EV_P_ ev_tstamp adjust)
2012{ 3243{
2013 int i; 3244 int i;
2014 3245
2015 for (i = 0; i < timercnt; ++i) 3246 for (i = 0; i < timercnt; ++i)
… …
2019 ANHE_at_cache (*he); 3250 ANHE_at_cache (*he);
2020 } 3251 }
2021} 3252}
2022 3253
2023/* fetch new monotonic and realtime times from the kernel */ 3254/* fetch new monotonic and realtime times from the kernel */
2024/* also detetc if there was a timejump, and act accordingly */ 3255/* also detect if there was a timejump, and act accordingly */
2025inline_speed void 3256inline_speed void
2026time_update (EV_P_ ev_tstamp max_block) 3257time_update (EV_P_ ev_tstamp max_block)
2027{ 3258{
2028#if EV_USE_MONOTONIC 3259#if EV_USE_MONOTONIC
2029 if (expect_true (have_monotonic)) 3260 if (expect_true (have_monotonic))
… …
2052 * doesn't hurt either as we only do this on time-jumps or 3283 * doesn't hurt either as we only do this on time-jumps or
2053 * in the unlikely event of having been preempted here. 3284 * in the unlikely event of having been preempted here.
2054 */ 3285 */
2055 for (i = 4; --i; ) 3286 for (i = 4; --i; )
2056 { 3287 {
3288 ev_tstamp diff;
2057 rtmn_diff = ev_rt_now - mn_now; 3289 rtmn_diff = ev_rt_now - mn_now;
2058 3290
3291 diff = odiff - rtmn_diff;
3292
2059 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3293 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2060 return; /* all is well */ 3294 return; /* all is well */
2061 3295
2062 ev_rt_now = ev_time (); 3296 ev_rt_now = ev_time ();
2063 mn_now = get_clock (); 3297 mn_now = get_clock ();
2064 now_floor = mn_now; 3298 now_floor = mn_now;
… …
2086 3320
2087 mn_now = ev_rt_now; 3321 mn_now = ev_rt_now;
2088 } 3322 }
2089} 3323}
2090 3324
2091void 3325int
2092ev_loop (EV_P_ int flags) 3326ev_run (EV_P_ int flags)
2093{ 3327{
2094#if EV_MINIMAL < 2 3328#if EV_FEATURE_API
2095 ++loop_depth; 3329 ++loop_depth;
2096#endif 3330#endif
2097 3331
2098 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3332 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2099 3333
2100 loop_done = EVUNLOOP_CANCEL; 3334 loop_done = EVBREAK_CANCEL;
2101 3335
2102 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3336 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2103 3337
2104 do 3338 do
2105 { 3339 {
2106#if EV_VERIFY >= 2 3340#if EV_VERIFY >= 2
2107 ev_loop_verify (EV_A); 3341 ev_verify (EV_A);
2108#endif 3342#endif
2109 3343
2110#ifndef _WIN32 3344#ifndef _WIN32
2111 if (expect_false (curpid)) /* penalise the forking check even more */ 3345 if (expect_false (curpid)) /* penalise the forking check even more */
2112 if (expect_false (getpid () != curpid)) 3346 if (expect_false (getpid () != curpid))
… …
2124 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3358 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2125 EV_INVOKE_PENDING; 3359 EV_INVOKE_PENDING;
2126 } 3360 }
2127#endif 3361#endif
2128 3362
3363#if EV_PREPARE_ENABLE
2129 /* queue prepare watchers (and execute them) */ 3364 /* queue prepare watchers (and execute them) */
2130 if (expect_false (preparecnt)) 3365 if (expect_false (preparecnt))
2131 { 3366 {
2132 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3367 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2133 EV_INVOKE_PENDING; 3368 EV_INVOKE_PENDING;
2134 } 3369 }
3370#endif
2135 3371
2136 if (expect_false (loop_done)) 3372 if (expect_false (loop_done))
2137 break; 3373 break;
2138 3374
2139 /* we might have forked, so reify kernel state if necessary */ 3375 /* we might have forked, so reify kernel state if necessary */
… …
2146 /* calculate blocking time */ 3382 /* calculate blocking time */
2147 { 3383 {
2148 ev_tstamp waittime = 0.; 3384 ev_tstamp waittime = 0.;
2149 ev_tstamp sleeptime = 0.; 3385 ev_tstamp sleeptime = 0.;
2150 3386
3387 /* remember old timestamp for io_blocktime calculation */
3388 ev_tstamp prev_mn_now = mn_now;
3389
3390 /* update time to cancel out callback processing overhead */
3391 time_update (EV_A_ 1e100);
3392
3393 /* from now on, we want a pipe-wake-up */
3394 pipe_write_wanted = 1;
3395
3396 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3397
2151 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3398 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2152 { 3399 {
2153 /* remember old timestamp for io_blocktime calculation */
2154 ev_tstamp prev_mn_now = mn_now;
2155
2156 /* update time to cancel out callback processing overhead */
2157 time_update (EV_A_ 1e100);
2158
2159 waittime = MAX_BLOCKTIME; 3400 waittime = MAX_BLOCKTIME;
2160 3401
2161 if (timercnt) 3402 if (timercnt)
2162 { 3403 {
2163 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3404 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2164 if (waittime > to) waittime = to; 3405 if (waittime > to) waittime = to;
2165 } 3406 }
2166 3407
2167#if EV_PERIODIC_ENABLE 3408#if EV_PERIODIC_ENABLE
2168 if (periodiccnt) 3409 if (periodiccnt)
2169 { 3410 {
2170 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3411 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2171 if (waittime > to) waittime = to; 3412 if (waittime > to) waittime = to;
2172 } 3413 }
2173#endif 3414#endif
2174 3415
2175 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3416 /* don't let timeouts decrease the waittime below timeout_blocktime */
2176 if (expect_false (waittime < timeout_blocktime)) 3417 if (expect_false (waittime < timeout_blocktime))
2177 waittime = timeout_blocktime; 3418 waittime = timeout_blocktime;
3419
3420 /* at this point, we NEED to wait, so we have to ensure */
3421 /* to pass a minimum nonzero value to the backend */
3422 if (expect_false (waittime < backend_mintime))
3423 waittime = backend_mintime;
2178 3424
2179 /* extra check because io_blocktime is commonly 0 */ 3425 /* extra check because io_blocktime is commonly 0 */
2180 if (expect_false (io_blocktime)) 3426 if (expect_false (io_blocktime))
2181 { 3427 {
2182 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3428 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2183 3429
2184 if (sleeptime > waittime - backend_fudge) 3430 if (sleeptime > waittime - backend_mintime)
2185 sleeptime = waittime - backend_fudge; 3431 sleeptime = waittime - backend_mintime;
2186 3432
2187 if (expect_true (sleeptime > 0.)) 3433 if (expect_true (sleeptime > 0.))
2188 { 3434 {
2189 ev_sleep (sleeptime); 3435 ev_sleep (sleeptime);
2190 waittime -= sleeptime; 3436 waittime -= sleeptime;
2191 } 3437 }
2192 } 3438 }
2193 } 3439 }
2194 3440
2195#if EV_MINIMAL < 2 3441#if EV_FEATURE_API
2196 ++loop_count; 3442 ++loop_count;
2197#endif 3443#endif
2198 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3444 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2199 backend_poll (EV_A_ waittime); 3445 backend_poll (EV_A_ waittime);
2200 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3446 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3447
3448 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3449
3450 ECB_MEMORY_FENCE_ACQUIRE;
3451 if (pipe_write_skipped)
3452 {
3453 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3454 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3455 }
3456
2201 3457
2202 /* update ev_rt_now, do magic */ 3458 /* update ev_rt_now, do magic */
2203 time_update (EV_A_ waittime + sleeptime); 3459 time_update (EV_A_ waittime + sleeptime);
2204 } 3460 }
2205 3461
… …
2212#if EV_IDLE_ENABLE 3468#if EV_IDLE_ENABLE
2213 /* queue idle watchers unless other events are pending */ 3469 /* queue idle watchers unless other events are pending */
2214 idle_reify (EV_A); 3470 idle_reify (EV_A);
2215#endif 3471#endif
2216 3472
3473#if EV_CHECK_ENABLE
2217 /* queue check watchers, to be executed first */ 3474 /* queue check watchers, to be executed first */
2218 if (expect_false (checkcnt)) 3475 if (expect_false (checkcnt))
2219 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3476 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3477#endif
2220 3478
2221 EV_INVOKE_PENDING; 3479 EV_INVOKE_PENDING;
2222 } 3480 }
2223 while (expect_true ( 3481 while (expect_true (
2224 activecnt 3482 activecnt
2225 && !loop_done 3483 && !loop_done
2226 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3484 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2227 )); 3485 ));
2228 3486
2229 if (loop_done == EVUNLOOP_ONE) 3487 if (loop_done == EVBREAK_ONE)
2230 loop_done = EVUNLOOP_CANCEL; 3488 loop_done = EVBREAK_CANCEL;
2231 3489
2232#if EV_MINIMAL < 2 3490#if EV_FEATURE_API
2233 --loop_depth; 3491 --loop_depth;
2234#endif 3492#endif
3493
3494 return activecnt;
2235} 3495}
2236 3496
2237void 3497void
2238ev_unloop (EV_P_ int how) 3498ev_break (EV_P_ int how) EV_THROW
2239{ 3499{
2240 loop_done = how; 3500 loop_done = how;
2241} 3501}
2242 3502
2243void 3503void
2244ev_ref (EV_P) 3504ev_ref (EV_P) EV_THROW
2245{ 3505{
2246 ++activecnt; 3506 ++activecnt;
2247} 3507}
2248 3508
2249void 3509void
2250ev_unref (EV_P) 3510ev_unref (EV_P) EV_THROW
2251{ 3511{
2252 --activecnt; 3512 --activecnt;
2253} 3513}
2254 3514
2255void 3515void
2256ev_now_update (EV_P) 3516ev_now_update (EV_P) EV_THROW
2257{ 3517{
2258 time_update (EV_A_ 1e100); 3518 time_update (EV_A_ 1e100);
2259} 3519}
2260 3520
2261void 3521void
2262ev_suspend (EV_P) 3522ev_suspend (EV_P) EV_THROW
2263{ 3523{
2264 ev_now_update (EV_A); 3524 ev_now_update (EV_A);
2265} 3525}
2266 3526
2267void 3527void
2268ev_resume (EV_P) 3528ev_resume (EV_P) EV_THROW
2269{ 3529{
2270 ev_tstamp mn_prev = mn_now; 3530 ev_tstamp mn_prev = mn_now;
2271 3531
2272 ev_now_update (EV_A); 3532 ev_now_update (EV_A);
2273 timers_reschedule (EV_A_ mn_now - mn_prev); 3533 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2290inline_size void 3550inline_size void
2291wlist_del (WL *head, WL elem) 3551wlist_del (WL *head, WL elem)
2292{ 3552{
2293 while (*head) 3553 while (*head)
2294 { 3554 {
2295 if (*head == elem) 3555 if (expect_true (*head == elem))
2296 { 3556 {
2297 *head = elem->next; 3557 *head = elem->next;
2298 return; 3558 break;
2299 } 3559 }
2300 3560
2301 head = &(*head)->next; 3561 head = &(*head)->next;
2302 } 3562 }
2303} 3563}
… …
2312 w->pending = 0; 3572 w->pending = 0;
2313 } 3573 }
2314} 3574}
2315 3575
2316int 3576int
2317ev_clear_pending (EV_P_ void *w) 3577ev_clear_pending (EV_P_ void *w) EV_THROW
2318{ 3578{
2319 W w_ = (W)w; 3579 W w_ = (W)w;
2320 int pending = w_->pending; 3580 int pending = w_->pending;
2321 3581
2322 if (expect_true (pending)) 3582 if (expect_true (pending))
… …
2355} 3615}
2356 3616
2357/*****************************************************************************/ 3617/*****************************************************************************/
2358 3618
2359void noinline 3619void noinline
2360ev_io_start (EV_P_ ev_io *w) 3620ev_io_start (EV_P_ ev_io *w) EV_THROW
2361{ 3621{
2362 int fd = w->fd; 3622 int fd = w->fd;
2363 3623
2364 if (expect_false (ev_is_active (w))) 3624 if (expect_false (ev_is_active (w)))
2365 return; 3625 return;
2366 3626
2367 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3627 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2368 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3628 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2369 3629
2370 EV_FREQUENT_CHECK; 3630 EV_FREQUENT_CHECK;
2371 3631
2372 ev_start (EV_A_ (W)w, 1); 3632 ev_start (EV_A_ (W)w, 1);
2373 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3633 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2374 wlist_add (&anfds[fd].head, (WL)w); 3634 wlist_add (&anfds[fd].head, (WL)w);
2375 3635
3636 /* common bug, apparently */
3637 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3638
2376 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3639 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2377 w->events &= ~EV__IOFDSET; 3640 w->events &= ~EV__IOFDSET;
2378 3641
2379 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
2380} 3643}
2381 3644
2382void noinline 3645void noinline
2383ev_io_stop (EV_P_ ev_io *w) 3646ev_io_stop (EV_P_ ev_io *w) EV_THROW
2384{ 3647{
2385 clear_pending (EV_A_ (W)w); 3648 clear_pending (EV_A_ (W)w);
2386 if (expect_false (!ev_is_active (w))) 3649 if (expect_false (!ev_is_active (w)))
2387 return; 3650 return;
2388 3651
… …
2391 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
2392 3655
2393 wlist_del (&anfds[w->fd].head, (WL)w); 3656 wlist_del (&anfds[w->fd].head, (WL)w);
2394 ev_stop (EV_A_ (W)w); 3657 ev_stop (EV_A_ (W)w);
2395 3658
2396 fd_change (EV_A_ w->fd, 1); 3659 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2397 3660
2398 EV_FREQUENT_CHECK; 3661 EV_FREQUENT_CHECK;
2399} 3662}
2400 3663
2401void noinline 3664void noinline
2402ev_timer_start (EV_P_ ev_timer *w) 3665ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2403{ 3666{
2404 if (expect_false (ev_is_active (w))) 3667 if (expect_false (ev_is_active (w)))
2405 return; 3668 return;
2406 3669
2407 ev_at (w) += mn_now; 3670 ev_at (w) += mn_now;
… …
2421 3684
2422 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3685 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2423} 3686}
2424 3687
2425void noinline 3688void noinline
2426ev_timer_stop (EV_P_ ev_timer *w) 3689ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2427{ 3690{
2428 clear_pending (EV_A_ (W)w); 3691 clear_pending (EV_A_ (W)w);
2429 if (expect_false (!ev_is_active (w))) 3692 if (expect_false (!ev_is_active (w)))
2430 return; 3693 return;
2431 3694
… …
2443 timers [active] = timers [timercnt + HEAP0]; 3706 timers [active] = timers [timercnt + HEAP0];
2444 adjustheap (timers, timercnt, active); 3707 adjustheap (timers, timercnt, active);
2445 } 3708 }
2446 } 3709 }
2447 3710
2448 EV_FREQUENT_CHECK;
2449
2450 ev_at (w) -= mn_now; 3711 ev_at (w) -= mn_now;
2451 3712
2452 ev_stop (EV_A_ (W)w); 3713 ev_stop (EV_A_ (W)w);
3714
3715 EV_FREQUENT_CHECK;
2453} 3716}
2454 3717
2455void noinline 3718void noinline
2456ev_timer_again (EV_P_ ev_timer *w) 3719ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2457{ 3720{
2458 EV_FREQUENT_CHECK; 3721 EV_FREQUENT_CHECK;
3722
3723 clear_pending (EV_A_ (W)w);
2459 3724
2460 if (ev_is_active (w)) 3725 if (ev_is_active (w))
2461 { 3726 {
2462 if (w->repeat) 3727 if (w->repeat)
2463 { 3728 {
… …
2475 } 3740 }
2476 3741
2477 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
2478} 3743}
2479 3744
3745ev_tstamp
3746ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3747{
3748 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3749}
3750
2480#if EV_PERIODIC_ENABLE 3751#if EV_PERIODIC_ENABLE
2481void noinline 3752void noinline
2482ev_periodic_start (EV_P_ ev_periodic *w) 3753ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2483{ 3754{
2484 if (expect_false (ev_is_active (w))) 3755 if (expect_false (ev_is_active (w)))
2485 return; 3756 return;
2486 3757
2487 if (w->reschedule_cb) 3758 if (w->reschedule_cb)
2488 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3759 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2489 else if (w->interval) 3760 else if (w->interval)
2490 { 3761 {
2491 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3762 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2492 /* this formula differs from the one in periodic_reify because we do not always round up */ 3763 periodic_recalc (EV_A_ w);
2493 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2494 } 3764 }
2495 else 3765 else
2496 ev_at (w) = w->offset; 3766 ev_at (w) = w->offset;
2497 3767
2498 EV_FREQUENT_CHECK; 3768 EV_FREQUENT_CHECK;
… …
2508 3778
2509 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3779 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2510} 3780}
2511 3781
2512void noinline 3782void noinline
2513ev_periodic_stop (EV_P_ ev_periodic *w) 3783ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2514{ 3784{
2515 clear_pending (EV_A_ (W)w); 3785 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w))) 3786 if (expect_false (!ev_is_active (w)))
2517 return; 3787 return;
2518 3788
… …
2530 periodics [active] = periodics [periodiccnt + HEAP0]; 3800 periodics [active] = periodics [periodiccnt + HEAP0];
2531 adjustheap (periodics, periodiccnt, active); 3801 adjustheap (periodics, periodiccnt, active);
2532 } 3802 }
2533 } 3803 }
2534 3804
2535 EV_FREQUENT_CHECK;
2536
2537 ev_stop (EV_A_ (W)w); 3805 ev_stop (EV_A_ (W)w);
3806
3807 EV_FREQUENT_CHECK;
2538} 3808}
2539 3809
2540void noinline 3810void noinline
2541ev_periodic_again (EV_P_ ev_periodic *w) 3811ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2542{ 3812{
2543 /* TODO: use adjustheap and recalculation */ 3813 /* TODO: use adjustheap and recalculation */
2544 ev_periodic_stop (EV_A_ w); 3814 ev_periodic_stop (EV_A_ w);
2545 ev_periodic_start (EV_A_ w); 3815 ev_periodic_start (EV_A_ w);
2546} 3816}
… …
2548 3818
2549#ifndef SA_RESTART 3819#ifndef SA_RESTART
2550# define SA_RESTART 0 3820# define SA_RESTART 0
2551#endif 3821#endif
2552 3822
3823#if EV_SIGNAL_ENABLE
3824
2553void noinline 3825void noinline
2554ev_signal_start (EV_P_ ev_signal *w) 3826ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2555{ 3827{
2556#if EV_MULTIPLICITY
2557 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2558#endif
2559 if (expect_false (ev_is_active (w))) 3828 if (expect_false (ev_is_active (w)))
2560 return; 3829 return;
2561 3830
2562 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3831 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2563 3832
2564 evpipe_init (EV_A); 3833#if EV_MULTIPLICITY
3834 assert (("libev: a signal must not be attached to two different loops",
3835 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2565 3836
2566 EV_FREQUENT_CHECK; 3837 signals [w->signum - 1].loop = EV_A;
3838 ECB_MEMORY_FENCE_RELEASE;
3839#endif
2567 3840
3841 EV_FREQUENT_CHECK;
3842
3843#if EV_USE_SIGNALFD
3844 if (sigfd == -2)
2568 { 3845 {
2569#ifndef _WIN32 3846 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2570 sigset_t full, prev; 3847 if (sigfd < 0 && errno == EINVAL)
2571 sigfillset (&full); 3848 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2572 sigprocmask (SIG_SETMASK, &full, &prev);
2573#endif
2574 3849
2575 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3850 if (sigfd >= 0)
3851 {
3852 fd_intern (sigfd); /* doing it twice will not hurt */
2576 3853
2577#ifndef _WIN32 3854 sigemptyset (&sigfd_set);
2578 sigprocmask (SIG_SETMASK, &prev, 0); 3855
2579#endif 3856 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3857 ev_set_priority (&sigfd_w, EV_MAXPRI);
3858 ev_io_start (EV_A_ &sigfd_w);
3859 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3860 }
2580 } 3861 }
3862
3863 if (sigfd >= 0)
3864 {
3865 /* TODO: check .head */
3866 sigaddset (&sigfd_set, w->signum);
3867 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3868
3869 signalfd (sigfd, &sigfd_set, 0);
3870 }
3871#endif
2581 3872
2582 ev_start (EV_A_ (W)w, 1); 3873 ev_start (EV_A_ (W)w, 1);
2583 wlist_add (&signals [w->signum - 1].head, (WL)w); 3874 wlist_add (&signals [w->signum - 1].head, (WL)w);
2584 3875
2585 if (!((WL)w)->next) 3876 if (!((WL)w)->next)
3877# if EV_USE_SIGNALFD
3878 if (sigfd < 0) /*TODO*/
3879# endif
2586 { 3880 {
2587#if _WIN32 3881# ifdef _WIN32
3882 evpipe_init (EV_A);
3883
2588 signal (w->signum, ev_sighandler); 3884 signal (w->signum, ev_sighandler);
2589#else 3885# else
2590 struct sigaction sa = { }; 3886 struct sigaction sa;
3887
3888 evpipe_init (EV_A);
3889
2591 sa.sa_handler = ev_sighandler; 3890 sa.sa_handler = ev_sighandler;
2592 sigfillset (&sa.sa_mask); 3891 sigfillset (&sa.sa_mask);
2593 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3892 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2594 sigaction (w->signum, &sa, 0); 3893 sigaction (w->signum, &sa, 0);
3894
3895 if (origflags & EVFLAG_NOSIGMASK)
3896 {
3897 sigemptyset (&sa.sa_mask);
3898 sigaddset (&sa.sa_mask, w->signum);
3899 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3900 }
2595#endif 3901#endif
2596 } 3902 }
2597 3903
2598 EV_FREQUENT_CHECK; 3904 EV_FREQUENT_CHECK;
2599} 3905}
2600 3906
2601void noinline 3907void noinline
2602ev_signal_stop (EV_P_ ev_signal *w) 3908ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2603{ 3909{
2604 clear_pending (EV_A_ (W)w); 3910 clear_pending (EV_A_ (W)w);
2605 if (expect_false (!ev_is_active (w))) 3911 if (expect_false (!ev_is_active (w)))
2606 return; 3912 return;
2607 3913
… …
2609 3915
2610 wlist_del (&signals [w->signum - 1].head, (WL)w); 3916 wlist_del (&signals [w->signum - 1].head, (WL)w);
2611 ev_stop (EV_A_ (W)w); 3917 ev_stop (EV_A_ (W)w);
2612 3918
2613 if (!signals [w->signum - 1].head) 3919 if (!signals [w->signum - 1].head)
3920 {
3921#if EV_MULTIPLICITY
3922 signals [w->signum - 1].loop = 0; /* unattach from signal */
3923#endif
3924#if EV_USE_SIGNALFD
3925 if (sigfd >= 0)
3926 {
3927 sigset_t ss;
3928
3929 sigemptyset (&ss);
3930 sigaddset (&ss, w->signum);
3931 sigdelset (&sigfd_set, w->signum);
3932
3933 signalfd (sigfd, &sigfd_set, 0);
3934 sigprocmask (SIG_UNBLOCK, &ss, 0);
3935 }
3936 else
3937#endif
2614 signal (w->signum, SIG_DFL); 3938 signal (w->signum, SIG_DFL);
3939 }
2615 3940
2616 EV_FREQUENT_CHECK; 3941 EV_FREQUENT_CHECK;
2617} 3942}
3943
3944#endif
3945
3946#if EV_CHILD_ENABLE
2618 3947
2619void 3948void
2620ev_child_start (EV_P_ ev_child *w) 3949ev_child_start (EV_P_ ev_child *w) EV_THROW
2621{ 3950{
2622#if EV_MULTIPLICITY 3951#if EV_MULTIPLICITY
2623 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3952 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2624#endif 3953#endif
2625 if (expect_false (ev_is_active (w))) 3954 if (expect_false (ev_is_active (w)))
2626 return; 3955 return;
2627 3956
2628 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
2629 3958
2630 ev_start (EV_A_ (W)w, 1); 3959 ev_start (EV_A_ (W)w, 1);
2631 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3960 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2632 3961
2633 EV_FREQUENT_CHECK; 3962 EV_FREQUENT_CHECK;
2634} 3963}
2635 3964
2636void 3965void
2637ev_child_stop (EV_P_ ev_child *w) 3966ev_child_stop (EV_P_ ev_child *w) EV_THROW
2638{ 3967{
2639 clear_pending (EV_A_ (W)w); 3968 clear_pending (EV_A_ (W)w);
2640 if (expect_false (!ev_is_active (w))) 3969 if (expect_false (!ev_is_active (w)))
2641 return; 3970 return;
2642 3971
2643 EV_FREQUENT_CHECK; 3972 EV_FREQUENT_CHECK;
2644 3973
2645 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3974 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2646 ev_stop (EV_A_ (W)w); 3975 ev_stop (EV_A_ (W)w);
2647 3976
2648 EV_FREQUENT_CHECK; 3977 EV_FREQUENT_CHECK;
2649} 3978}
3979
3980#endif
2650 3981
2651#if EV_STAT_ENABLE 3982#if EV_STAT_ENABLE
2652 3983
2653# ifdef _WIN32 3984# ifdef _WIN32
2654# undef lstat 3985# undef lstat
… …
2660#define MIN_STAT_INTERVAL 0.1074891 3991#define MIN_STAT_INTERVAL 0.1074891
2661 3992
2662static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3993static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2663 3994
2664#if EV_USE_INOTIFY 3995#if EV_USE_INOTIFY
2665# define EV_INOTIFY_BUFSIZE 8192 3996
3997/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3998# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2666 3999
2667static void noinline 4000static void noinline
2668infy_add (EV_P_ ev_stat *w) 4001infy_add (EV_P_ ev_stat *w)
2669{ 4002{
2670 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); 4003 w->wd = inotify_add_watch (fs_fd, w->path,
4004 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4005 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4006 | IN_DONT_FOLLOW | IN_MASK_ADD);
2671 4007
2672 if (w->wd < 0) 4008 if (w->wd >= 0)
4009 {
4010 struct statfs sfs;
4011
4012 /* now local changes will be tracked by inotify, but remote changes won't */
4013 /* unless the filesystem is known to be local, we therefore still poll */
4014 /* also do poll on <2.6.25, but with normal frequency */
4015
4016 if (!fs_2625)
4017 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4018 else if (!statfs (w->path, &sfs)
4019 && (sfs.f_type == 0x1373 /* devfs */
4020 || sfs.f_type == 0x4006 /* fat */
4021 || sfs.f_type == 0x4d44 /* msdos */
4022 || sfs.f_type == 0xEF53 /* ext2/3 */
4023 || sfs.f_type == 0x72b6 /* jffs2 */
4024 || sfs.f_type == 0x858458f6 /* ramfs */
4025 || sfs.f_type == 0x5346544e /* ntfs */
4026 || sfs.f_type == 0x3153464a /* jfs */
4027 || sfs.f_type == 0x9123683e /* btrfs */
4028 || sfs.f_type == 0x52654973 /* reiser3 */
4029 || sfs.f_type == 0x01021994 /* tmpfs */
4030 || sfs.f_type == 0x58465342 /* xfs */))
4031 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4032 else
4033 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2673 { 4034 }
4035 else
4036 {
4037 /* can't use inotify, continue to stat */
2674 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4038 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2675 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2676 4039
2677 /* monitor some parent directory for speedup hints */ 4040 /* if path is not there, monitor some parent directory for speedup hints */
2678 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4041 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2679 /* but an efficiency issue only */ 4042 /* but an efficiency issue only */
2680 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4043 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2681 { 4044 {
2682 char path [4096]; 4045 char path [4096];
… …
2692 if (!pend || pend == path) 4055 if (!pend || pend == path)
2693 break; 4056 break;
2694 4057
2695 *pend = 0; 4058 *pend = 0;
2696 w->wd = inotify_add_watch (fs_fd, path, mask); 4059 w->wd = inotify_add_watch (fs_fd, path, mask);
2697 } 4060 }
2698 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4061 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2699 } 4062 }
2700 } 4063 }
2701 4064
2702 if (w->wd >= 0) 4065 if (w->wd >= 0)
2703 {
2704 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4066 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2705 4067
2706 /* now local changes will be tracked by inotify, but remote changes won't */ 4068 /* now re-arm timer, if required */
2707 /* unless the filesystem it known to be local, we therefore still poll */ 4069 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2708 /* also do poll on <2.6.25, but with normal frequency */
2709 struct statfs sfs;
2710
2711 if (fs_2625 && !statfs (w->path, &sfs))
2712 if (sfs.f_type == 0x1373 /* devfs */
2713 || sfs.f_type == 0xEF53 /* ext2/3 */
2714 || sfs.f_type == 0x3153464a /* jfs */
2715 || sfs.f_type == 0x52654973 /* reiser3 */
2716 || sfs.f_type == 0x01021994 /* tempfs */
2717 || sfs.f_type == 0x58465342 /* xfs */)
2718 return;
2719
2720 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2721 ev_timer_again (EV_A_ &w->timer); 4070 ev_timer_again (EV_A_ &w->timer);
2722 } 4071 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2723} 4072}
2724 4073
2725static void noinline 4074static void noinline
2726infy_del (EV_P_ ev_stat *w) 4075infy_del (EV_P_ ev_stat *w)
2727{ 4076{
… …
2730 4079
2731 if (wd < 0) 4080 if (wd < 0)
2732 return; 4081 return;
2733 4082
2734 w->wd = -2; 4083 w->wd = -2;
2735 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4084 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2736 wlist_del (&fs_hash [slot].head, (WL)w); 4085 wlist_del (&fs_hash [slot].head, (WL)w);
2737 4086
2738 /* remove this watcher, if others are watching it, they will rearm */ 4087 /* remove this watcher, if others are watching it, they will rearm */
2739 inotify_rm_watch (fs_fd, wd); 4088 inotify_rm_watch (fs_fd, wd);
2740} 4089}
… …
2742static void noinline 4091static void noinline
2743infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4092infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2744{ 4093{
2745 if (slot < 0) 4094 if (slot < 0)
2746 /* overflow, need to check for all hash slots */ 4095 /* overflow, need to check for all hash slots */
2747 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4096 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2748 infy_wd (EV_A_ slot, wd, ev); 4097 infy_wd (EV_A_ slot, wd, ev);
2749 else 4098 else
2750 { 4099 {
2751 WL w_; 4100 WL w_;
2752 4101
2753 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4102 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2754 { 4103 {
2755 ev_stat *w = (ev_stat *)w_; 4104 ev_stat *w = (ev_stat *)w_;
2756 w_ = w_->next; /* lets us remove this watcher and all before it */ 4105 w_ = w_->next; /* lets us remove this watcher and all before it */
2757 4106
2758 if (w->wd == wd || wd == -1) 4107 if (w->wd == wd || wd == -1)
2759 { 4108 {
2760 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4109 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2761 { 4110 {
2762 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4111 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2763 w->wd = -1; 4112 w->wd = -1;
2764 infy_add (EV_A_ w); /* re-add, no matter what */ 4113 infy_add (EV_A_ w); /* re-add, no matter what */
2765 } 4114 }
2766 4115
2767 stat_timer_cb (EV_A_ &w->timer, 0); 4116 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2772 4121
2773static void 4122static void
2774infy_cb (EV_P_ ev_io *w, int revents) 4123infy_cb (EV_P_ ev_io *w, int revents)
2775{ 4124{
2776 char buf [EV_INOTIFY_BUFSIZE]; 4125 char buf [EV_INOTIFY_BUFSIZE];
2777 struct inotify_event *ev = (struct inotify_event *)buf;
2778 int ofs; 4126 int ofs;
2779 int len = read (fs_fd, buf, sizeof (buf)); 4127 int len = read (fs_fd, buf, sizeof (buf));
2780 4128
2781 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4129 for (ofs = 0; ofs < len; )
4130 {
4131 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2782 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4132 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4133 ofs += sizeof (struct inotify_event) + ev->len;
4134 }
2783} 4135}
2784 4136
2785inline_size void 4137inline_size void ecb_cold
2786check_2625 (EV_P) 4138ev_check_2625 (EV_P)
2787{ 4139{
2788 /* kernels < 2.6.25 are borked 4140 /* kernels < 2.6.25 are borked
2789 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4141 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2790 */ 4142 */
2791 struct utsname buf; 4143 if (ev_linux_version () < 0x020619)
2792 int major, minor, micro;
2793
2794 if (uname (&buf))
2795 return; 4144 return;
2796 4145
2797 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2798 return;
2799
2800 if (major < 2
2801 || (major == 2 && minor < 6)
2802 || (major == 2 && minor == 6 && micro < 25))
2803 return;
2804
2805 fs_2625 = 1; 4146 fs_2625 = 1;
4147}
4148
4149inline_size int
4150infy_newfd (void)
4151{
4152#if defined IN_CLOEXEC && defined IN_NONBLOCK
4153 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4154 if (fd >= 0)
4155 return fd;
4156#endif
4157 return inotify_init ();
2806} 4158}
2807 4159
2808inline_size void 4160inline_size void
2809infy_init (EV_P) 4161infy_init (EV_P)
2810{ 4162{
2811 if (fs_fd != -2) 4163 if (fs_fd != -2)
2812 return; 4164 return;
2813 4165
2814 fs_fd = -1; 4166 fs_fd = -1;
2815 4167
2816 check_2625 (EV_A); 4168 ev_check_2625 (EV_A);
2817 4169
2818 fs_fd = inotify_init (); 4170 fs_fd = infy_newfd ();
2819 4171
2820 if (fs_fd >= 0) 4172 if (fs_fd >= 0)
2821 { 4173 {
4174 fd_intern (fs_fd);
2822 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4175 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2823 ev_set_priority (&fs_w, EV_MAXPRI); 4176 ev_set_priority (&fs_w, EV_MAXPRI);
2824 ev_io_start (EV_A_ &fs_w); 4177 ev_io_start (EV_A_ &fs_w);
4178 ev_unref (EV_A);
2825 } 4179 }
2826} 4180}
2827 4181
2828inline_size void 4182inline_size void
2829infy_fork (EV_P) 4183infy_fork (EV_P)
… …
2831 int slot; 4185 int slot;
2832 4186
2833 if (fs_fd < 0) 4187 if (fs_fd < 0)
2834 return; 4188 return;
2835 4189
4190 ev_ref (EV_A);
4191 ev_io_stop (EV_A_ &fs_w);
2836 close (fs_fd); 4192 close (fs_fd);
2837 fs_fd = inotify_init (); 4193 fs_fd = infy_newfd ();
2838 4194
4195 if (fs_fd >= 0)
4196 {
4197 fd_intern (fs_fd);
4198 ev_io_set (&fs_w, fs_fd, EV_READ);
4199 ev_io_start (EV_A_ &fs_w);
4200 ev_unref (EV_A);
4201 }
4202
2839 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4203 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2840 { 4204 {
2841 WL w_ = fs_hash [slot].head; 4205 WL w_ = fs_hash [slot].head;
2842 fs_hash [slot].head = 0; 4206 fs_hash [slot].head = 0;
2843 4207
2844 while (w_) 4208 while (w_)
… …
2849 w->wd = -1; 4213 w->wd = -1;
2850 4214
2851 if (fs_fd >= 0) 4215 if (fs_fd >= 0)
2852 infy_add (EV_A_ w); /* re-add, no matter what */ 4216 infy_add (EV_A_ w); /* re-add, no matter what */
2853 else 4217 else
4218 {
4219 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4220 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2854 ev_timer_again (EV_A_ &w->timer); 4221 ev_timer_again (EV_A_ &w->timer);
4222 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4223 }
2855 } 4224 }
2856 } 4225 }
2857} 4226}
2858 4227
2859#endif 4228#endif
… …
2863#else 4232#else
2864# define EV_LSTAT(p,b) lstat (p, b) 4233# define EV_LSTAT(p,b) lstat (p, b)
2865#endif 4234#endif
2866 4235
2867void 4236void
2868ev_stat_stat (EV_P_ ev_stat *w) 4237ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2869{ 4238{
2870 if (lstat (w->path, &w->attr) < 0) 4239 if (lstat (w->path, &w->attr) < 0)
2871 w->attr.st_nlink = 0; 4240 w->attr.st_nlink = 0;
2872 else if (!w->attr.st_nlink) 4241 else if (!w->attr.st_nlink)
2873 w->attr.st_nlink = 1; 4242 w->attr.st_nlink = 1;
… …
2876static void noinline 4245static void noinline
2877stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4246stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2878{ 4247{
2879 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4248 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2880 4249
2881 /* we copy this here each the time so that */ 4250 ev_statdata prev = w->attr;
2882 /* prev has the old value when the callback gets invoked */
2883 w->prev = w->attr;
2884 ev_stat_stat (EV_A_ w); 4251 ev_stat_stat (EV_A_ w);
2885 4252
2886 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4253 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2887 if ( 4254 if (
2888 w->prev.st_dev != w->attr.st_dev 4255 prev.st_dev != w->attr.st_dev
2889 || w->prev.st_ino != w->attr.st_ino 4256 || prev.st_ino != w->attr.st_ino
2890 || w->prev.st_mode != w->attr.st_mode 4257 || prev.st_mode != w->attr.st_mode
2891 || w->prev.st_nlink != w->attr.st_nlink 4258 || prev.st_nlink != w->attr.st_nlink
2892 || w->prev.st_uid != w->attr.st_uid 4259 || prev.st_uid != w->attr.st_uid
2893 || w->prev.st_gid != w->attr.st_gid 4260 || prev.st_gid != w->attr.st_gid
2894 || w->prev.st_rdev != w->attr.st_rdev 4261 || prev.st_rdev != w->attr.st_rdev
2895 || w->prev.st_size != w->attr.st_size 4262 || prev.st_size != w->attr.st_size
2896 || w->prev.st_atime != w->attr.st_atime 4263 || prev.st_atime != w->attr.st_atime
2897 || w->prev.st_mtime != w->attr.st_mtime 4264 || prev.st_mtime != w->attr.st_mtime
2898 || w->prev.st_ctime != w->attr.st_ctime 4265 || prev.st_ctime != w->attr.st_ctime
2899 ) { 4266 ) {
4267 /* we only update w->prev on actual differences */
4268 /* in case we test more often than invoke the callback, */
4269 /* to ensure that prev is always different to attr */
4270 w->prev = prev;
4271
2900 #if EV_USE_INOTIFY 4272 #if EV_USE_INOTIFY
2901 if (fs_fd >= 0) 4273 if (fs_fd >= 0)
2902 { 4274 {
2903 infy_del (EV_A_ w); 4275 infy_del (EV_A_ w);
2904 infy_add (EV_A_ w); 4276 infy_add (EV_A_ w);
… …
2909 ev_feed_event (EV_A_ w, EV_STAT); 4281 ev_feed_event (EV_A_ w, EV_STAT);
2910 } 4282 }
2911} 4283}
2912 4284
2913void 4285void
2914ev_stat_start (EV_P_ ev_stat *w) 4286ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2915{ 4287{
2916 if (expect_false (ev_is_active (w))) 4288 if (expect_false (ev_is_active (w)))
2917 return; 4289 return;
2918 4290
2919 ev_stat_stat (EV_A_ w); 4291 ev_stat_stat (EV_A_ w);
… …
2929 4301
2930 if (fs_fd >= 0) 4302 if (fs_fd >= 0)
2931 infy_add (EV_A_ w); 4303 infy_add (EV_A_ w);
2932 else 4304 else
2933#endif 4305#endif
4306 {
2934 ev_timer_again (EV_A_ &w->timer); 4307 ev_timer_again (EV_A_ &w->timer);
4308 ev_unref (EV_A);
4309 }
2935 4310
2936 ev_start (EV_A_ (W)w, 1); 4311 ev_start (EV_A_ (W)w, 1);
2937 4312
2938 EV_FREQUENT_CHECK; 4313 EV_FREQUENT_CHECK;
2939} 4314}
2940 4315
2941void 4316void
2942ev_stat_stop (EV_P_ ev_stat *w) 4317ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2943{ 4318{
2944 clear_pending (EV_A_ (W)w); 4319 clear_pending (EV_A_ (W)w);
2945 if (expect_false (!ev_is_active (w))) 4320 if (expect_false (!ev_is_active (w)))
2946 return; 4321 return;
2947 4322
2948 EV_FREQUENT_CHECK; 4323 EV_FREQUENT_CHECK;
2949 4324
2950#if EV_USE_INOTIFY 4325#if EV_USE_INOTIFY
2951 infy_del (EV_A_ w); 4326 infy_del (EV_A_ w);
2952#endif 4327#endif
4328
4329 if (ev_is_active (&w->timer))
4330 {
4331 ev_ref (EV_A);
2953 ev_timer_stop (EV_A_ &w->timer); 4332 ev_timer_stop (EV_A_ &w->timer);
4333 }
2954 4334
2955 ev_stop (EV_A_ (W)w); 4335 ev_stop (EV_A_ (W)w);
2956 4336
2957 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
2958} 4338}
2959#endif 4339#endif
2960 4340
2961#if EV_IDLE_ENABLE 4341#if EV_IDLE_ENABLE
2962void 4342void
2963ev_idle_start (EV_P_ ev_idle *w) 4343ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2964{ 4344{
2965 if (expect_false (ev_is_active (w))) 4345 if (expect_false (ev_is_active (w)))
2966 return; 4346 return;
2967 4347
2968 pri_adjust (EV_A_ (W)w); 4348 pri_adjust (EV_A_ (W)w);
… …
2981 4361
2982 EV_FREQUENT_CHECK; 4362 EV_FREQUENT_CHECK;
2983} 4363}
2984 4364
2985void 4365void
2986ev_idle_stop (EV_P_ ev_idle *w) 4366ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2987{ 4367{
2988 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
2989 if (expect_false (!ev_is_active (w))) 4369 if (expect_false (!ev_is_active (w)))
2990 return; 4370 return;
2991 4371
… …
3003 4383
3004 EV_FREQUENT_CHECK; 4384 EV_FREQUENT_CHECK;
3005} 4385}
3006#endif 4386#endif
3007 4387
4388#if EV_PREPARE_ENABLE
3008void 4389void
3009ev_prepare_start (EV_P_ ev_prepare *w) 4390ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3010{ 4391{
3011 if (expect_false (ev_is_active (w))) 4392 if (expect_false (ev_is_active (w)))
3012 return; 4393 return;
3013 4394
3014 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
… …
3019 4400
3020 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
3021} 4402}
3022 4403
3023void 4404void
3024ev_prepare_stop (EV_P_ ev_prepare *w) 4405ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3025{ 4406{
3026 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
3027 if (expect_false (!ev_is_active (w))) 4408 if (expect_false (!ev_is_active (w)))
3028 return; 4409 return;
3029 4410
… …
3038 4419
3039 ev_stop (EV_A_ (W)w); 4420 ev_stop (EV_A_ (W)w);
3040 4421
3041 EV_FREQUENT_CHECK; 4422 EV_FREQUENT_CHECK;
3042} 4423}
4424#endif
3043 4425
4426#if EV_CHECK_ENABLE
3044void 4427void
3045ev_check_start (EV_P_ ev_check *w) 4428ev_check_start (EV_P_ ev_check *w) EV_THROW
3046{ 4429{
3047 if (expect_false (ev_is_active (w))) 4430 if (expect_false (ev_is_active (w)))
3048 return; 4431 return;
3049 4432
3050 EV_FREQUENT_CHECK; 4433 EV_FREQUENT_CHECK;
… …
3055 4438
3056 EV_FREQUENT_CHECK; 4439 EV_FREQUENT_CHECK;
3057} 4440}
3058 4441
3059void 4442void
3060ev_check_stop (EV_P_ ev_check *w) 4443ev_check_stop (EV_P_ ev_check *w) EV_THROW
3061{ 4444{
3062 clear_pending (EV_A_ (W)w); 4445 clear_pending (EV_A_ (W)w);
3063 if (expect_false (!ev_is_active (w))) 4446 if (expect_false (!ev_is_active (w)))
3064 return; 4447 return;
3065 4448
… …
3074 4457
3075 ev_stop (EV_A_ (W)w); 4458 ev_stop (EV_A_ (W)w);
3076 4459
3077 EV_FREQUENT_CHECK; 4460 EV_FREQUENT_CHECK;
3078} 4461}
4462#endif
3079 4463
3080#if EV_EMBED_ENABLE 4464#if EV_EMBED_ENABLE
3081void noinline 4465void noinline
3082ev_embed_sweep (EV_P_ ev_embed *w) 4466ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3083{ 4467{
3084 ev_loop (w->other, EVLOOP_NONBLOCK); 4468 ev_run (w->other, EVRUN_NOWAIT);
3085} 4469}
3086 4470
3087static void 4471static void
3088embed_io_cb (EV_P_ ev_io *io, int revents) 4472embed_io_cb (EV_P_ ev_io *io, int revents)
3089{ 4473{
3090 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4474 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3091 4475
3092 if (ev_cb (w)) 4476 if (ev_cb (w))
3093 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4477 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3094 else 4478 else
3095 ev_loop (w->other, EVLOOP_NONBLOCK); 4479 ev_run (w->other, EVRUN_NOWAIT);
3096} 4480}
3097 4481
3098static void 4482static void
3099embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4483embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3100{ 4484{
3101 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4485 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3102 4486
3103 { 4487 {
3104 struct ev_loop *loop = w->other; 4488 EV_P = w->other;
3105 4489
3106 while (fdchangecnt) 4490 while (fdchangecnt)
3107 { 4491 {
3108 fd_reify (EV_A); 4492 fd_reify (EV_A);
3109 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4493 ev_run (EV_A_ EVRUN_NOWAIT);
3110 } 4494 }
3111 } 4495 }
3112} 4496}
3113 4497
3114static void 4498static void
… …
3117 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4501 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3118 4502
3119 ev_embed_stop (EV_A_ w); 4503 ev_embed_stop (EV_A_ w);
3120 4504
3121 { 4505 {
3122 struct ev_loop *loop = w->other; 4506 EV_P = w->other;
3123 4507
3124 ev_loop_fork (EV_A); 4508 ev_loop_fork (EV_A);
3125 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4509 ev_run (EV_A_ EVRUN_NOWAIT);
3126 } 4510 }
3127 4511
3128 ev_embed_start (EV_A_ w); 4512 ev_embed_start (EV_A_ w);
3129} 4513}
3130 4514
… …
3135 ev_idle_stop (EV_A_ idle); 4519 ev_idle_stop (EV_A_ idle);
3136} 4520}
3137#endif 4521#endif
3138 4522
3139void 4523void
3140ev_embed_start (EV_P_ ev_embed *w) 4524ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3141{ 4525{
3142 if (expect_false (ev_is_active (w))) 4526 if (expect_false (ev_is_active (w)))
3143 return; 4527 return;
3144 4528
3145 { 4529 {
3146 struct ev_loop *loop = w->other; 4530 EV_P = w->other;
3147 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4531 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3148 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4532 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3149 } 4533 }
3150 4534
3151 EV_FREQUENT_CHECK; 4535 EV_FREQUENT_CHECK;
… …
3166 4550
3167 EV_FREQUENT_CHECK; 4551 EV_FREQUENT_CHECK;
3168} 4552}
3169 4553
3170void 4554void
3171ev_embed_stop (EV_P_ ev_embed *w) 4555ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3172{ 4556{
3173 clear_pending (EV_A_ (W)w); 4557 clear_pending (EV_A_ (W)w);
3174 if (expect_false (!ev_is_active (w))) 4558 if (expect_false (!ev_is_active (w)))
3175 return; 4559 return;
3176 4560
… …
3178 4562
3179 ev_io_stop (EV_A_ &w->io); 4563 ev_io_stop (EV_A_ &w->io);
3180 ev_prepare_stop (EV_A_ &w->prepare); 4564 ev_prepare_stop (EV_A_ &w->prepare);
3181 ev_fork_stop (EV_A_ &w->fork); 4565 ev_fork_stop (EV_A_ &w->fork);
3182 4566
4567 ev_stop (EV_A_ (W)w);
4568
3183 EV_FREQUENT_CHECK; 4569 EV_FREQUENT_CHECK;
3184} 4570}
3185#endif 4571#endif
3186 4572
3187#if EV_FORK_ENABLE 4573#if EV_FORK_ENABLE
3188void 4574void
3189ev_fork_start (EV_P_ ev_fork *w) 4575ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3190{ 4576{
3191 if (expect_false (ev_is_active (w))) 4577 if (expect_false (ev_is_active (w)))
3192 return; 4578 return;
3193 4579
3194 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
… …
3199 4585
3200 EV_FREQUENT_CHECK; 4586 EV_FREQUENT_CHECK;
3201} 4587}
3202 4588
3203void 4589void
3204ev_fork_stop (EV_P_ ev_fork *w) 4590ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3205{ 4591{
3206 clear_pending (EV_A_ (W)w); 4592 clear_pending (EV_A_ (W)w);
3207 if (expect_false (!ev_is_active (w))) 4593 if (expect_false (!ev_is_active (w)))
3208 return; 4594 return;
3209 4595
… …
3220 4606
3221 EV_FREQUENT_CHECK; 4607 EV_FREQUENT_CHECK;
3222} 4608}
3223#endif 4609#endif
3224 4610
4611#if EV_CLEANUP_ENABLE
4612void
4613ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4614{
4615 if (expect_false (ev_is_active (w)))
4616 return;
4617
4618 EV_FREQUENT_CHECK;
4619
4620 ev_start (EV_A_ (W)w, ++cleanupcnt);
4621 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4622 cleanups [cleanupcnt - 1] = w;
4623
4624 /* cleanup watchers should never keep a refcount on the loop */
4625 ev_unref (EV_A);
4626 EV_FREQUENT_CHECK;
4627}
4628
4629void
4630ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4631{
4632 clear_pending (EV_A_ (W)w);
4633 if (expect_false (!ev_is_active (w)))
4634 return;
4635
4636 EV_FREQUENT_CHECK;
4637 ev_ref (EV_A);
4638
4639 {
4640 int active = ev_active (w);
4641
4642 cleanups [active - 1] = cleanups [--cleanupcnt];
4643 ev_active (cleanups [active - 1]) = active;
4644 }
4645
4646 ev_stop (EV_A_ (W)w);
4647
4648 EV_FREQUENT_CHECK;
4649}
4650#endif
4651
3225#if EV_ASYNC_ENABLE 4652#if EV_ASYNC_ENABLE
3226void 4653void
3227ev_async_start (EV_P_ ev_async *w) 4654ev_async_start (EV_P_ ev_async *w) EV_THROW
3228{ 4655{
3229 if (expect_false (ev_is_active (w))) 4656 if (expect_false (ev_is_active (w)))
3230 return; 4657 return;
4658
4659 w->sent = 0;
3231 4660
3232 evpipe_init (EV_A); 4661 evpipe_init (EV_A);
3233 4662
3234 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
3235 4664
… …
3239 4668
3240 EV_FREQUENT_CHECK; 4669 EV_FREQUENT_CHECK;
3241} 4670}
3242 4671
3243void 4672void
3244ev_async_stop (EV_P_ ev_async *w) 4673ev_async_stop (EV_P_ ev_async *w) EV_THROW
3245{ 4674{
3246 clear_pending (EV_A_ (W)w); 4675 clear_pending (EV_A_ (W)w);
3247 if (expect_false (!ev_is_active (w))) 4676 if (expect_false (!ev_is_active (w)))
3248 return; 4677 return;
3249 4678
… …
3260 4689
3261 EV_FREQUENT_CHECK; 4690 EV_FREQUENT_CHECK;
3262} 4691}
3263 4692
3264void 4693void
3265ev_async_send (EV_P_ ev_async *w) 4694ev_async_send (EV_P_ ev_async *w) EV_THROW
3266{ 4695{
3267 w->sent = 1; 4696 w->sent = 1;
3268 evpipe_write (EV_A_ &gotasync); 4697 evpipe_write (EV_A_ &async_pending);
3269} 4698}
3270#endif 4699#endif
3271 4700
3272/*****************************************************************************/ 4701/*****************************************************************************/
3273 4702
… …
3307 4736
3308 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4737 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3309} 4738}
3310 4739
3311void 4740void
3312ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4741ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3313{ 4742{
3314 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4743 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3315 4744
3316 if (expect_false (!once)) 4745 if (expect_false (!once))
3317 { 4746 {
3318 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4747 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3319 return; 4748 return;
3320 } 4749 }
3321 4750
3322 once->cb = cb; 4751 once->cb = cb;
3323 once->arg = arg; 4752 once->arg = arg;
… …
3338} 4767}
3339 4768
3340/*****************************************************************************/ 4769/*****************************************************************************/
3341 4770
3342#if EV_WALK_ENABLE 4771#if EV_WALK_ENABLE
3343void 4772void ecb_cold
3344ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4773ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3345{ 4774{
3346 int i, j; 4775 int i, j;
3347 ev_watcher_list *wl, *wn; 4776 ev_watcher_list *wl, *wn;
3348 4777
3349 if (types & (EV_IO | EV_EMBED)) 4778 if (types & (EV_IO | EV_EMBED))
… …
3392 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4821 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3393#endif 4822#endif
3394 4823
3395#if EV_IDLE_ENABLE 4824#if EV_IDLE_ENABLE
3396 if (types & EV_IDLE) 4825 if (types & EV_IDLE)
3397 for (j = NUMPRI; i--; ) 4826 for (j = NUMPRI; j--; )
3398 for (i = idlecnt [j]; i--; ) 4827 for (i = idlecnt [j]; i--; )
3399 cb (EV_A_ EV_IDLE, idles [j][i]); 4828 cb (EV_A_ EV_IDLE, idles [j][i]);
3400#endif 4829#endif
3401 4830
3402#if EV_FORK_ENABLE 4831#if EV_FORK_ENABLE
… …
3410 if (types & EV_ASYNC) 4839 if (types & EV_ASYNC)
3411 for (i = asynccnt; i--; ) 4840 for (i = asynccnt; i--; )
3412 cb (EV_A_ EV_ASYNC, asyncs [i]); 4841 cb (EV_A_ EV_ASYNC, asyncs [i]);
3413#endif 4842#endif
3414 4843
4844#if EV_PREPARE_ENABLE
3415 if (types & EV_PREPARE) 4845 if (types & EV_PREPARE)
3416 for (i = preparecnt; i--; ) 4846 for (i = preparecnt; i--; )
3417#if EV_EMBED_ENABLE 4847# if EV_EMBED_ENABLE
3418 if (ev_cb (prepares [i]) != embed_prepare_cb) 4848 if (ev_cb (prepares [i]) != embed_prepare_cb)
3419#endif 4849# endif
3420 cb (EV_A_ EV_PREPARE, prepares [i]); 4850 cb (EV_A_ EV_PREPARE, prepares [i]);
4851#endif
3421 4852
4853#if EV_CHECK_ENABLE
3422 if (types & EV_CHECK) 4854 if (types & EV_CHECK)
3423 for (i = checkcnt; i--; ) 4855 for (i = checkcnt; i--; )
3424 cb (EV_A_ EV_CHECK, checks [i]); 4856 cb (EV_A_ EV_CHECK, checks [i]);
4857#endif
3425 4858
4859#if EV_SIGNAL_ENABLE
3426 if (types & EV_SIGNAL) 4860 if (types & EV_SIGNAL)
3427 for (i = 0; i < signalmax; ++i) 4861 for (i = 0; i < EV_NSIG - 1; ++i)
3428 for (wl = signals [i].head; wl; ) 4862 for (wl = signals [i].head; wl; )
3429 { 4863 {
3430 wn = wl->next; 4864 wn = wl->next;
3431 cb (EV_A_ EV_SIGNAL, wl); 4865 cb (EV_A_ EV_SIGNAL, wl);
3432 wl = wn; 4866 wl = wn;
3433 } 4867 }
4868#endif
3434 4869
4870#if EV_CHILD_ENABLE
3435 if (types & EV_CHILD) 4871 if (types & EV_CHILD)
3436 for (i = EV_PID_HASHSIZE; i--; ) 4872 for (i = (EV_PID_HASHSIZE); i--; )
3437 for (wl = childs [i]; wl; ) 4873 for (wl = childs [i]; wl; )
3438 { 4874 {
3439 wn = wl->next; 4875 wn = wl->next;
3440 cb (EV_A_ EV_CHILD, wl); 4876 cb (EV_A_ EV_CHILD, wl);
3441 wl = wn; 4877 wl = wn;
3442 } 4878 }
4879#endif
3443/* EV_STAT 0x00001000 /* stat data changed */ 4880/* EV_STAT 0x00001000 /* stat data changed */
3444/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4881/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3445} 4882}
3446#endif 4883#endif
3447 4884
3448#if EV_MULTIPLICITY 4885#if EV_MULTIPLICITY
3449 #include "ev_wrap.h" 4886 #include "ev_wrap.h"
3450#endif 4887#endif
3451 4888
3452#ifdef __cplusplus
3453}
3454#endif
3455

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