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Comparing libev/ev.c (file contents):
Revision 1.293 by root, Mon Jun 29 18:46:52 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
1324#endif
1325
1326#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1327
1328#if EV_MINPRI == EV_MAXPRI
1329# define ABSPRI(w) (((W)w), 0)
392#else 1330#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1331# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1332#endif
398 1333
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1334#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 1335#define EMPTY2(a,b) /* used to suppress some warnings */
401 1336
402typedef ev_watcher *W; 1337typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 1341#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1342#define ev_at(w) ((WT)(w))->at
408 1343
409#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
410/* 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 */
411/* giving it a reasonably high chance of working on typical architetcures */ 1346/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1347static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1348#endif
414 1349
415#if EV_USE_MONOTONIC 1350#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1351static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1352#endif
418 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
419#ifdef _WIN32 1364#ifdef _WIN32
420# include "ev_win32.c" 1365# include "ev_win32.c"
421#endif 1366#endif
422 1367
423/*****************************************************************************/ 1368/*****************************************************************************/
424 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
425static void (*syserr_cb)(const char *msg); 1468static void (*syserr_cb)(const char *msg) EV_THROW;
426 1469
427void 1470void ecb_cold
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1471ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
429{ 1472{
430 syserr_cb = cb; 1473 syserr_cb = cb;
431} 1474}
432 1475
433static void noinline 1476static void noinline ecb_cold
434ev_syserr (const char *msg) 1477ev_syserr (const char *msg)
435{ 1478{
436 if (!msg) 1479 if (!msg)
437 msg = "(libev) system error"; 1480 msg = "(libev) system error";
438 1481
439 if (syserr_cb) 1482 if (syserr_cb)
440 syserr_cb (msg); 1483 syserr_cb (msg);
441 else 1484 else
442 { 1485 {
1486#if EV_AVOID_STDIO
1487 ev_printerr (msg);
1488 ev_printerr (": ");
1489 ev_printerr (strerror (errno));
1490 ev_printerr ("\n");
1491#else
443 perror (msg); 1492 perror (msg);
1493#endif
444 abort (); 1494 abort ();
445 } 1495 }
446} 1496}
447 1497
448static void * 1498static void *
449ev_realloc_emul (void *ptr, long size) 1499ev_realloc_emul (void *ptr, long size) EV_THROW
450{ 1500{
451 /* some systems, notably openbsd and darwin, fail to properly 1501 /* some systems, notably openbsd and darwin, fail to properly
452 * 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
453 * 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.
454 */ 1506 */
455 1507
456 if (size) 1508 if (size)
457 return realloc (ptr, size); 1509 return realloc (ptr, size);
458 1510
459 free (ptr); 1511 free (ptr);
460 return 0; 1512 return 0;
461} 1513}
462 1514
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1515static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
464 1516
465void 1517void ecb_cold
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1518ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
467{ 1519{
468 alloc = cb; 1520 alloc = cb;
469} 1521}
470 1522
471inline_speed void * 1523inline_speed void *
… …
473{ 1525{
474 ptr = alloc (ptr, size); 1526 ptr = alloc (ptr, size);
475 1527
476 if (!ptr && size) 1528 if (!ptr && size)
477 { 1529 {
1530#if EV_AVOID_STDIO
1531 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1532#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1533 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1534#endif
479 abort (); 1535 abort ();
480 } 1536 }
481 1537
482 return ptr; 1538 return ptr;
483} 1539}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1541#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1542#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1543
488/*****************************************************************************/ 1544/*****************************************************************************/
489 1545
1546/* set in reify when reification needed */
1547#define EV_ANFD_REIFY 1
1548
490/* file descriptor info structure */ 1549/* file descriptor info structure */
491typedef struct 1550typedef struct
492{ 1551{
493 WL head; 1552 WL head;
494 unsigned char events; /* the events watched for */ 1553 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1554 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1555 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 1556 unsigned char unused;
498#if EV_USE_EPOLL 1557#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1558 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1559#endif
501#if EV_SELECT_IS_WINSOCKET 1560#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1561 SOCKET handle;
1562#endif
1563#if EV_USE_IOCP
1564 OVERLAPPED or, ow;
503#endif 1565#endif
504} ANFD; 1566} ANFD;
505 1567
506/* stores the pending event set for a given watcher */ 1568/* stores the pending event set for a given watcher */
507typedef struct 1569typedef struct
… …
549 #undef VAR 1611 #undef VAR
550 }; 1612 };
551 #include "ev_wrap.h" 1613 #include "ev_wrap.h"
552 1614
553 static struct ev_loop default_loop_struct; 1615 static struct ev_loop default_loop_struct;
554 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 */
555 1617
556#else 1618#else
557 1619
558 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 */
559 #define VAR(name,decl) static decl; 1621 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1622 #include "ev_vars.h"
561 #undef VAR 1623 #undef VAR
562 1624
563 static int ev_default_loop_ptr; 1625 static int ev_default_loop_ptr;
564 1626
565#endif 1627#endif
566 1628
1629#if EV_FEATURE_API
1630# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1631# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1632# define EV_INVOKE_PENDING invoke_cb (EV_A)
1633#else
1634# define EV_RELEASE_CB (void)0
1635# define EV_ACQUIRE_CB (void)0
1636# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1637#endif
1638
1639#define EVBREAK_RECURSE 0x80
1640
567/*****************************************************************************/ 1641/*****************************************************************************/
568 1642
569#ifndef EV_HAVE_EV_TIME 1643#ifndef EV_HAVE_EV_TIME
570ev_tstamp 1644ev_tstamp
571ev_time (void) 1645ev_time (void) EV_THROW
572{ 1646{
573#if EV_USE_REALTIME 1647#if EV_USE_REALTIME
574 if (expect_true (have_realtime)) 1648 if (expect_true (have_realtime))
575 { 1649 {
576 struct timespec ts; 1650 struct timespec ts;
… …
600 return ev_time (); 1674 return ev_time ();
601} 1675}
602 1676
603#if EV_MULTIPLICITY 1677#if EV_MULTIPLICITY
604ev_tstamp 1678ev_tstamp
605ev_now (EV_P) 1679ev_now (EV_P) EV_THROW
606{ 1680{
607 return ev_rt_now; 1681 return ev_rt_now;
608} 1682}
609#endif 1683#endif
610 1684
611void 1685void
612ev_sleep (ev_tstamp delay) 1686ev_sleep (ev_tstamp delay) EV_THROW
613{ 1687{
614 if (delay > 0.) 1688 if (delay > 0.)
615 { 1689 {
616#if EV_USE_NANOSLEEP 1690#if EV_USE_NANOSLEEP
617 struct timespec ts; 1691 struct timespec ts;
618 1692
619 ts.tv_sec = (time_t)delay; 1693 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 1694 nanosleep (&ts, 0);
623#elif defined(_WIN32) 1695#elif defined _WIN32
624 Sleep ((unsigned long)(delay * 1e3)); 1696 Sleep ((unsigned long)(delay * 1e3));
625#else 1697#else
626 struct timeval tv; 1698 struct timeval tv;
627 1699
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* 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 */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1701 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 1702 /* by older ones */
1703 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 1704 select (0, 0, 0, 0, &tv);
635#endif 1705#endif
636 } 1706 }
637} 1707}
638 1708
639/*****************************************************************************/ 1709/*****************************************************************************/
640 1710
641#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 */
642 1712
643/* find a suitable new size for the given array, */ 1713/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 1714/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 1715inline_size int
646array_nextsize (int elem, int cur, int cnt) 1716array_nextsize (int elem, int cur, int cnt)
647{ 1717{
648 int ncur = cur + 1; 1718 int ncur = cur + 1;
649 1719
650 do 1720 do
651 ncur <<= 1; 1721 ncur <<= 1;
652 while (cnt > ncur); 1722 while (cnt > ncur);
653 1723
654 /* 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 */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1725 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 { 1726 {
657 ncur *= elem; 1727 ncur *= elem;
658 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);
659 ncur = ncur - sizeof (void *) * 4; 1729 ncur = ncur - sizeof (void *) * 4;
… …
661 } 1731 }
662 1732
663 return ncur; 1733 return ncur;
664} 1734}
665 1735
666static noinline void * 1736static void * noinline ecb_cold
667array_realloc (int elem, void *base, int *cur, int cnt) 1737array_realloc (int elem, void *base, int *cur, int cnt)
668{ 1738{
669 *cur = array_nextsize (elem, *cur, cnt); 1739 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 1740 return ev_realloc (base, elem * *cur);
671} 1741}
… …
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1744 memset ((void *)(base), 0, sizeof (*(base)) * (count))
675 1745
676#define array_needsize(type,base,cur,cnt,init) \ 1746#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 1747 if (expect_false ((cnt) > (cur))) \
678 { \ 1748 { \
679 int ocur_ = (cur); \ 1749 int ecb_unused ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 1750 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 1751 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 1752 init ((base) + (ocur_), (cur) - ocur_); \
683 } 1753 }
684 1754
… …
702pendingcb (EV_P_ ev_prepare *w, int revents) 1772pendingcb (EV_P_ ev_prepare *w, int revents)
703{ 1773{
704} 1774}
705 1775
706void noinline 1776void noinline
707ev_feed_event (EV_P_ void *w, int revents) 1777ev_feed_event (EV_P_ void *w, int revents) EV_THROW
708{ 1778{
709 W w_ = (W)w; 1779 W w_ = (W)w;
710 int pri = ABSPRI (w_); 1780 int pri = ABSPRI (w_);
711 1781
712 if (expect_false (w_->pending)) 1782 if (expect_false (w_->pending))
… …
716 w_->pending = ++pendingcnt [pri]; 1786 w_->pending = ++pendingcnt [pri];
717 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1787 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
718 pendings [pri][w_->pending - 1].w = w_; 1788 pendings [pri][w_->pending - 1].w = w_;
719 pendings [pri][w_->pending - 1].events = revents; 1789 pendings [pri][w_->pending - 1].events = revents;
720 } 1790 }
1791
1792 pendingpri = NUMPRI - 1;
721} 1793}
722 1794
723inline_speed void 1795inline_speed void
724feed_reverse (EV_P_ W w) 1796feed_reverse (EV_P_ W w)
725{ 1797{
… …
745} 1817}
746 1818
747/*****************************************************************************/ 1819/*****************************************************************************/
748 1820
749inline_speed void 1821inline_speed void
750fd_event (EV_P_ int fd, int revents) 1822fd_event_nocheck (EV_P_ int fd, int revents)
751{ 1823{
752 ANFD *anfd = anfds + fd; 1824 ANFD *anfd = anfds + fd;
753 ev_io *w; 1825 ev_io *w;
754 1826
755 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)
… …
759 if (ev) 1831 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 1832 ev_feed_event (EV_A_ (W)w, ev);
761 } 1833 }
762} 1834}
763 1835
1836/* do not submit kernel events for fds that have reify set */
1837/* because that means they changed while we were polling for new events */
1838inline_speed void
1839fd_event (EV_P_ int fd, int revents)
1840{
1841 ANFD *anfd = anfds + fd;
1842
1843 if (expect_true (!anfd->reify))
1844 fd_event_nocheck (EV_A_ fd, revents);
1845}
1846
764void 1847void
765ev_feed_fd_event (EV_P_ int fd, int revents) 1848ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
766{ 1849{
767 if (fd >= 0 && fd < anfdmax) 1850 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 1851 fd_event_nocheck (EV_A_ fd, revents);
769} 1852}
770 1853
771/* make sure the external fd watch events are in-sync */ 1854/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 1855/* with the kernel/libev internal state */
773inline_size void 1856inline_size void
774fd_reify (EV_P) 1857fd_reify (EV_P)
775{ 1858{
776 int i; 1859 int i;
777 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
778 for (i = 0; i < fdchangecnt; ++i) 1886 for (i = 0; i < fdchangecnt; ++i)
779 { 1887 {
780 int fd = fdchanges [i]; 1888 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 1889 ANFD *anfd = anfds + fd;
782 ev_io *w; 1890 ev_io *w;
783 1891
784 unsigned char events = 0; 1892 unsigned char o_events = anfd->events;
1893 unsigned char o_reify = anfd->reify;
785 1894
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1895 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 1896
789#if EV_SELECT_IS_WINSOCKET 1897 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 1898 {
792 unsigned long arg; 1899 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 1900
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1901 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 1902 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 1903
797 #endif 1904 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1905 o_reify = EV__IOFDSET; /* actually |= */
799 } 1906 }
800#endif
801 1907
802 { 1908 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 1909 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 1910 }
813 1911
814 fdchangecnt = 0; 1912 fdchangecnt = 0;
815} 1913}
816 1914
… …
828 fdchanges [fdchangecnt - 1] = fd; 1926 fdchanges [fdchangecnt - 1] = fd;
829 } 1927 }
830} 1928}
831 1929
832/* 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 */
833inline_speed void 1931inline_speed void ecb_cold
834fd_kill (EV_P_ int fd) 1932fd_kill (EV_P_ int fd)
835{ 1933{
836 ev_io *w; 1934 ev_io *w;
837 1935
838 while ((w = (ev_io *)anfds [fd].head)) 1936 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 1938 ev_io_stop (EV_A_ w);
841 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);
842 } 1940 }
843} 1941}
844 1942
845/* check whether the given fd is atcually valid, for error recovery */ 1943/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1944inline_size int ecb_cold
847fd_valid (int fd) 1945fd_valid (int fd)
848{ 1946{
849#ifdef _WIN32 1947#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1948 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1949#else
852 return fcntl (fd, F_GETFD) != -1; 1950 return fcntl (fd, F_GETFD) != -1;
853#endif 1951#endif
854} 1952}
855 1953
856/* called on EBADF to verify fds */ 1954/* called on EBADF to verify fds */
857static void noinline 1955static void noinline ecb_cold
858fd_ebadf (EV_P) 1956fd_ebadf (EV_P)
859{ 1957{
860 int fd; 1958 int fd;
861 1959
862 for (fd = 0; fd < anfdmax; ++fd) 1960 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 1962 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 1963 fd_kill (EV_A_ fd);
866} 1964}
867 1965
868/* 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 */
869static void noinline 1967static void noinline ecb_cold
870fd_enomem (EV_P) 1968fd_enomem (EV_P)
871{ 1969{
872 int fd; 1970 int fd;
873 1971
874 for (fd = anfdmax; fd--; ) 1972 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1973 if (anfds [fd].events)
876 { 1974 {
877 fd_kill (EV_A_ fd); 1975 fd_kill (EV_A_ fd);
878 return; 1976 break;
879 } 1977 }
880} 1978}
881 1979
882/* 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 */
883static void noinline 1981static void noinline
… …
888 for (fd = 0; fd < anfdmax; ++fd) 1986 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1987 if (anfds [fd].events)
890 { 1988 {
891 anfds [fd].events = 0; 1989 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1990 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1991 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1992 }
895} 1993}
896 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
897/*****************************************************************************/ 2009/*****************************************************************************/
898 2010
899/* 2011/*
900 * 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
901 * 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
902 * the branching factor of the d-tree. 2014 * the branching factor of the d-tree.
903 */ 2015 */
904 2016
905/* 2017/*
… …
973 2085
974 for (;;) 2086 for (;;)
975 { 2087 {
976 int c = k << 1; 2088 int c = k << 1;
977 2089
978 if (c > N + HEAP0 - 1) 2090 if (c >= N + HEAP0)
979 break; 2091 break;
980 2092
981 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])
982 ? 1 : 0; 2094 ? 1 : 0;
983 2095
… …
1019 2131
1020/* move an element suitably so it is in a correct place */ 2132/* move an element suitably so it is in a correct place */
1021inline_size void 2133inline_size void
1022adjustheap (ANHE *heap, int N, int k) 2134adjustheap (ANHE *heap, int N, int k)
1023{ 2135{
1024 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)]))
1025 upheap (heap, k); 2137 upheap (heap, k);
1026 else 2138 else
1027 downheap (heap, N, k); 2139 downheap (heap, N, k);
1028} 2140}
1029 2141
… …
1042/*****************************************************************************/ 2154/*****************************************************************************/
1043 2155
1044/* associate signal watchers to a signal signal */ 2156/* associate signal watchers to a signal signal */
1045typedef struct 2157typedef struct
1046{ 2158{
2159 EV_ATOMIC_T pending;
2160#if EV_MULTIPLICITY
2161 EV_P;
2162#endif
1047 WL head; 2163 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 2164} ANSIG;
1050 2165
1051static ANSIG *signals; 2166static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 2167
1056/*****************************************************************************/ 2168/*****************************************************************************/
1057 2169
1058/* used to prepare libev internal fd's */ 2170#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* 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
1060inline_speed void 2217inline_speed void
1061fd_intern (int fd) 2218evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1062{ 2219{
1063#ifdef _WIN32 2220 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 2221
1072static void noinline 2222 if (expect_true (*flag))
1073evpipe_init (EV_P) 2223 return;
1074{ 2224
1075 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)
1076 { 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
1077#if EV_USE_EVENTFD 2241#if EV_USE_EVENTFD
1078 if ((evfd = eventfd (0, 0)) >= 0) 2242 if (evpipe [0] < 0)
1079 { 2243 {
1080 evpipe [0] = -1; 2244 uint64_t counter = 1;
1081 fd_intern (evfd); 2245 write (evpipe [1], &counter, sizeof (uint64_t));
1082 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 2246 }
1084 else 2247 else
1085#endif 2248#endif
1086 { 2249 {
1087 while (pipe (evpipe)) 2250#ifdef _WIN32
1088 ev_syserr ("(libev) error creating signal/async pipe"); 2251 WSABUF buf;
1089 2252 DWORD sent;
1090 fd_intern (evpipe [0]); 2253 buf.buf = &buf;
1091 fd_intern (evpipe [1]); 2254 buf.len = 1;
1092 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
1093 } 2259 }
1094
1095 ev_io_start (EV_A_ &pipe_w);
1096 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 }
1098}
1099
1100inline_size void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{
1103 if (!*flag)
1104 {
1105 int old_errno = errno; /* save errno because write might clobber it */
1106
1107 *flag = 1;
1108
1109#if EV_USE_EVENTFD
1110 if (evfd >= 0)
1111 {
1112 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t));
1114 }
1115 else
1116#endif
1117 write (evpipe [1], &old_errno, 1);
1118 2260
1119 errno = old_errno; 2261 errno = old_errno;
1120 } 2262 }
1121} 2263}
1122 2264
1123/* called whenever the libev signal pipe */ 2265/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 2266/* got some events (signal, async) */
1125static void 2267static void
1126pipecb (EV_P_ ev_io *iow, int revents) 2268pipecb (EV_P_ ev_io *iow, int revents)
1127{ 2269{
2270 int i;
2271
2272 if (revents & EV_READ)
2273 {
1128#if EV_USE_EVENTFD 2274#if EV_USE_EVENTFD
1129 if (evfd >= 0) 2275 if (evpipe [0] < 0)
1130 { 2276 {
1131 uint64_t counter; 2277 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 2278 read (evpipe [1], &counter, sizeof (uint64_t));
1133 } 2279 }
1134 else 2280 else
1135#endif 2281#endif
1136 { 2282 {
1137 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
1138 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)
1139 } 2303 {
2304 sig_pending = 0;
1140 2305
1141 if (gotsig && ev_is_default_loop (EV_A)) 2306 ECB_MEMORY_FENCE;
1142 {
1143 int signum;
1144 gotsig = 0;
1145 2307
1146 for (signum = signalmax; signum--; ) 2308 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 2309 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 2310 ev_feed_signal_event (EV_A_ i + 1);
1149 } 2311 }
2312#endif
1150 2313
1151#if EV_ASYNC_ENABLE 2314#if EV_ASYNC_ENABLE
1152 if (gotasync) 2315 if (async_pending)
1153 { 2316 {
1154 int i; 2317 async_pending = 0;
1155 gotasync = 0; 2318
2319 ECB_MEMORY_FENCE;
1156 2320
1157 for (i = asynccnt; i--; ) 2321 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 2322 if (asyncs [i]->sent)
1159 { 2323 {
1160 asyncs [i]->sent = 0; 2324 asyncs [i]->sent = 0;
2325 ECB_MEMORY_FENCE_RELEASE;
1161 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2326 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1162 } 2327 }
1163 } 2328 }
1164#endif 2329#endif
1165} 2330}
1166 2331
1167/*****************************************************************************/ 2332/*****************************************************************************/
1168 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
1169static void 2350static void
1170ev_sighandler (int signum) 2351ev_sighandler (int signum)
1171{ 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
1172#if EV_MULTIPLICITY 2370#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct; 2371 /* it is permissible to try to feed a signal to the wrong loop */
1174#endif 2372 /* or, likely more useful, feeding a signal nobody is waiting for */
1175 2373
1176#if _WIN32 2374 if (expect_false (signals [signum].loop != EV_A))
1177 signal (signum, ev_sighandler);
1178#endif
1179
1180 signals [signum - 1].gotsig = 1;
1181 evpipe_write (EV_A_ &gotsig);
1182}
1183
1184void noinline
1185ev_feed_signal_event (EV_P_ int signum)
1186{
1187 WL w;
1188
1189#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1191#endif
1192
1193 --signum;
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 2375 return;
2376#endif
1197 2377
1198 signals [signum].gotsig = 0; 2378 signals [signum].pending = 0;
2379 ECB_MEMORY_FENCE_RELEASE;
1199 2380
1200 for (w = signals [signum].head; w; w = w->next) 2381 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2382 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 2383}
1203 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
1204/*****************************************************************************/ 2407/*****************************************************************************/
1205 2408
2409#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 2410static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 2411
1210static ev_signal childev; 2412static ev_signal childev;
1211 2413
1212#ifndef WIFCONTINUED 2414#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 2415# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 2420child_reap (EV_P_ int chain, int pid, int status)
1219{ 2421{
1220 ev_child *w; 2422 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2423 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 2424
1223 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)
1224 { 2426 {
1225 if ((w->pid == pid || !w->pid) 2427 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 2428 && (!traced || (w->flags & 1)))
1227 { 2429 {
1228 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 */
… …
1253 /* 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 */
1254 /* 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 */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2457 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 2458
1257 child_reap (EV_A_ pid, pid, status); 2459 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 2460 if ((EV_PID_HASHSIZE) > 1)
1259 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 */
1260} 2462}
1261 2463
1262#endif 2464#endif
1263 2465
1264/*****************************************************************************/ 2466/*****************************************************************************/
1265 2467
2468#if EV_USE_IOCP
2469# include "ev_iocp.c"
2470#endif
1266#if EV_USE_PORT 2471#if EV_USE_PORT
1267# include "ev_port.c" 2472# include "ev_port.c"
1268#endif 2473#endif
1269#if EV_USE_KQUEUE 2474#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 2475# include "ev_kqueue.c"
… …
1277#endif 2482#endif
1278#if EV_USE_SELECT 2483#if EV_USE_SELECT
1279# include "ev_select.c" 2484# include "ev_select.c"
1280#endif 2485#endif
1281 2486
1282int 2487int ecb_cold
1283ev_version_major (void) 2488ev_version_major (void) EV_THROW
1284{ 2489{
1285 return EV_VERSION_MAJOR; 2490 return EV_VERSION_MAJOR;
1286} 2491}
1287 2492
1288int 2493int ecb_cold
1289ev_version_minor (void) 2494ev_version_minor (void) EV_THROW
1290{ 2495{
1291 return EV_VERSION_MINOR; 2496 return EV_VERSION_MINOR;
1292} 2497}
1293 2498
1294/* 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 */
1295int inline_size 2500int inline_size ecb_cold
1296enable_secure (void) 2501enable_secure (void)
1297{ 2502{
1298#ifdef _WIN32 2503#ifdef _WIN32
1299 return 0; 2504 return 0;
1300#else 2505#else
1301 return getuid () != geteuid () 2506 return getuid () != geteuid ()
1302 || getgid () != getegid (); 2507 || getgid () != getegid ();
1303#endif 2508#endif
1304} 2509}
1305 2510
1306unsigned int 2511unsigned int ecb_cold
1307ev_supported_backends (void) 2512ev_supported_backends (void) EV_THROW
1308{ 2513{
1309 unsigned int flags = 0; 2514 unsigned int flags = 0;
1310 2515
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2516 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1312 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2517 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2520 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1316 2521
1317 return flags; 2522 return flags;
1318} 2523}
1319 2524
1320unsigned int 2525unsigned int ecb_cold
1321ev_recommended_backends (void) 2526ev_recommended_backends (void) EV_THROW
1322{ 2527{
1323 unsigned int flags = ev_supported_backends (); 2528 unsigned int flags = ev_supported_backends ();
1324 2529
1325#ifndef __NetBSD__ 2530#ifndef __NetBSD__
1326 /* kqueue is borked on everything but netbsd apparently */ 2531 /* kqueue is borked on everything but netbsd apparently */
… …
1330#ifdef __APPLE__ 2535#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 2536 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2537 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 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 */
1334#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
1335 2543
1336 return flags; 2544 return flags;
1337} 2545}
1338 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
1339unsigned int 2559unsigned int
1340ev_embeddable_backends (void) 2560ev_backend (EV_P) EV_THROW
1341{ 2561{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2562 return backend;
1343
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */
1346 flags &= ~EVBACKEND_EPOLL;
1347
1348 return flags;
1349} 2563}
1350 2564
2565#if EV_FEATURE_API
1351unsigned int 2566unsigned int
1352ev_backend (EV_P) 2567ev_iteration (EV_P) EV_THROW
1353{ 2568{
1354 return backend; 2569 return loop_count;
1355} 2570}
1356 2571
1357unsigned int 2572unsigned int
1358ev_loop_count (EV_P) 2573ev_depth (EV_P) EV_THROW
1359{ 2574{
1360 return loop_count; 2575 return loop_depth;
1361} 2576}
1362 2577
1363void 2578void
1364ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2579ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1365{ 2580{
1366 io_blocktime = interval; 2581 io_blocktime = interval;
1367} 2582}
1368 2583
1369void 2584void
1370ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2585ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1371{ 2586{
1372 timeout_blocktime = interval; 2587 timeout_blocktime = interval;
1373} 2588}
1374 2589
2590void
2591ev_set_userdata (EV_P_ void *data) EV_THROW
2592{
2593 userdata = data;
2594}
2595
2596void *
2597ev_userdata (EV_P) EV_THROW
2598{
2599 return userdata;
2600}
2601
2602void
2603ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2604{
2605 invoke_cb = invoke_pending_cb;
2606}
2607
2608void
2609ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
2610{
2611 release_cb = release;
2612 acquire_cb = acquire;
2613}
2614#endif
2615
1375/* initialise a loop structure, must be zero-initialised */ 2616/* initialise a loop structure, must be zero-initialised */
1376static void noinline 2617static void noinline ecb_cold
1377loop_init (EV_P_ unsigned int flags) 2618loop_init (EV_P_ unsigned int flags) EV_THROW
1378{ 2619{
1379 if (!backend) 2620 if (!backend)
1380 { 2621 {
2622 origflags = flags;
2623
1381#if EV_USE_REALTIME 2624#if EV_USE_REALTIME
1382 if (!have_realtime) 2625 if (!have_realtime)
1383 { 2626 {
1384 struct timespec ts; 2627 struct timespec ts;
1385 2628
… …
1396 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2639 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397 have_monotonic = 1; 2640 have_monotonic = 1;
1398 } 2641 }
1399#endif 2642#endif
1400 2643
1401 ev_rt_now = ev_time ();
1402 mn_now = get_clock ();
1403 now_floor = mn_now;
1404 rtmn_diff = ev_rt_now - mn_now;
1405
1406 io_blocktime = 0.;
1407 timeout_blocktime = 0.;
1408 backend = 0;
1409 backend_fd = -1;
1410 gotasync = 0;
1411#if EV_USE_INOTIFY
1412 fs_fd = -2;
1413#endif
1414
1415 /* pid check not overridable via env */ 2644 /* pid check not overridable via env */
1416#ifndef _WIN32 2645#ifndef _WIN32
1417 if (flags & EVFLAG_FORKCHECK) 2646 if (flags & EVFLAG_FORKCHECK)
1418 curpid = getpid (); 2647 curpid = getpid ();
1419#endif 2648#endif
… …
1421 if (!(flags & EVFLAG_NOENV) 2650 if (!(flags & EVFLAG_NOENV)
1422 && !enable_secure () 2651 && !enable_secure ()
1423 && getenv ("LIBEV_FLAGS")) 2652 && getenv ("LIBEV_FLAGS"))
1424 flags = atoi (getenv ("LIBEV_FLAGS")); 2653 flags = atoi (getenv ("LIBEV_FLAGS"));
1425 2654
1426 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))
1427 flags |= ev_recommended_backends (); 2683 flags |= ev_recommended_backends ();
1428 2684
2685#if EV_USE_IOCP
2686 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2687#endif
1429#if EV_USE_PORT 2688#if EV_USE_PORT
1430 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2689 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1431#endif 2690#endif
1432#if EV_USE_KQUEUE 2691#if EV_USE_KQUEUE
1433 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2692 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1442 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2701 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1443#endif 2702#endif
1444 2703
1445 ev_prepare_init (&pending_w, pendingcb); 2704 ev_prepare_init (&pending_w, pendingcb);
1446 2705
2706#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 ev_init (&pipe_w, pipecb); 2707 ev_init (&pipe_w, pipecb);
1448 ev_set_priority (&pipe_w, EV_MAXPRI); 2708 ev_set_priority (&pipe_w, EV_MAXPRI);
2709#endif
1449 } 2710 }
1450} 2711}
1451 2712
1452/* free up a loop structure */ 2713/* free up a loop structure */
1453static void noinline 2714void ecb_cold
1454loop_destroy (EV_P) 2715ev_loop_destroy (EV_P)
1455{ 2716{
1456 int i; 2717 int i;
1457 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
1458 if (ev_is_active (&pipe_w)) 2742 if (ev_is_active (&pipe_w))
1459 { 2743 {
1460 ev_ref (EV_A); /* signal watcher */ 2744 /*ev_ref (EV_A);*/
1461 ev_io_stop (EV_A_ &pipe_w); 2745 /*ev_io_stop (EV_A_ &pipe_w);*/
1462 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
1463#if EV_USE_EVENTFD 2751#if EV_USE_SIGNALFD
1464 if (evfd >= 0) 2752 if (ev_is_active (&sigfd_w))
1465 close (evfd); 2753 close (sigfd);
1466#endif 2754#endif
1467
1468 if (evpipe [0] >= 0)
1469 {
1470 close (evpipe [0]);
1471 close (evpipe [1]);
1472 }
1473 }
1474 2755
1475#if EV_USE_INOTIFY 2756#if EV_USE_INOTIFY
1476 if (fs_fd >= 0) 2757 if (fs_fd >= 0)
1477 close (fs_fd); 2758 close (fs_fd);
1478#endif 2759#endif
1479 2760
1480 if (backend_fd >= 0) 2761 if (backend_fd >= 0)
1481 close (backend_fd); 2762 close (backend_fd);
1482 2763
2764#if EV_USE_IOCP
2765 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2766#endif
1483#if EV_USE_PORT 2767#if EV_USE_PORT
1484 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2768 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1485#endif 2769#endif
1486#if EV_USE_KQUEUE 2770#if EV_USE_KQUEUE
1487 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2771 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1502#if EV_IDLE_ENABLE 2786#if EV_IDLE_ENABLE
1503 array_free (idle, [i]); 2787 array_free (idle, [i]);
1504#endif 2788#endif
1505 } 2789 }
1506 2790
1507 ev_free (anfds); anfdmax = 0; 2791 ev_free (anfds); anfds = 0; anfdmax = 0;
1508 2792
1509 /* have to use the microsoft-never-gets-it-right macro */ 2793 /* have to use the microsoft-never-gets-it-right macro */
1510 array_free (rfeed, EMPTY); 2794 array_free (rfeed, EMPTY);
1511 array_free (fdchange, EMPTY); 2795 array_free (fdchange, EMPTY);
1512 array_free (timer, EMPTY); 2796 array_free (timer, EMPTY);
… …
1514 array_free (periodic, EMPTY); 2798 array_free (periodic, EMPTY);
1515#endif 2799#endif
1516#if EV_FORK_ENABLE 2800#if EV_FORK_ENABLE
1517 array_free (fork, EMPTY); 2801 array_free (fork, EMPTY);
1518#endif 2802#endif
2803#if EV_CLEANUP_ENABLE
2804 array_free (cleanup, EMPTY);
2805#endif
1519 array_free (prepare, EMPTY); 2806 array_free (prepare, EMPTY);
1520 array_free (check, EMPTY); 2807 array_free (check, EMPTY);
1521#if EV_ASYNC_ENABLE 2808#if EV_ASYNC_ENABLE
1522 array_free (async, EMPTY); 2809 array_free (async, EMPTY);
1523#endif 2810#endif
1524 2811
1525 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
1526} 2822}
1527 2823
1528#if EV_USE_INOTIFY 2824#if EV_USE_INOTIFY
1529inline_size void infy_fork (EV_P); 2825inline_size void infy_fork (EV_P);
1530#endif 2826#endif
… …
1543#endif 2839#endif
1544#if EV_USE_INOTIFY 2840#if EV_USE_INOTIFY
1545 infy_fork (EV_A); 2841 infy_fork (EV_A);
1546#endif 2842#endif
1547 2843
2844#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1548 if (ev_is_active (&pipe_w)) 2845 if (ev_is_active (&pipe_w))
1549 { 2846 {
1550 /* this "locks" the handlers against writing to the pipe */ 2847 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1551 /* while we modify the fd vars */
1552 gotsig = 1;
1553#if EV_ASYNC_ENABLE
1554 gotasync = 1;
1555#endif
1556 2848
1557 ev_ref (EV_A); 2849 ev_ref (EV_A);
1558 ev_io_stop (EV_A_ &pipe_w); 2850 ev_io_stop (EV_A_ &pipe_w);
1559 2851
1560#if EV_USE_EVENTFD
1561 if (evfd >= 0)
1562 close (evfd);
1563#endif
1564
1565 if (evpipe [0] >= 0) 2852 if (evpipe [0] >= 0)
1566 { 2853 EV_WIN32_CLOSE_FD (evpipe [0]);
1567 close (evpipe [0]);
1568 close (evpipe [1]);
1569 }
1570 2854
1571 evpipe_init (EV_A); 2855 evpipe_init (EV_A);
1572 /* now iterate over everything, in case we missed something */ 2856 /* iterate over everything, in case we missed something before */
1573 pipecb (EV_A_ &pipe_w, EV_READ); 2857 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1574 } 2858 }
2859#endif
1575 2860
1576 postfork = 0; 2861 postfork = 0;
1577} 2862}
1578 2863
1579#if EV_MULTIPLICITY 2864#if EV_MULTIPLICITY
1580 2865
1581struct ev_loop * 2866struct ev_loop * ecb_cold
1582ev_loop_new (unsigned int flags) 2867ev_loop_new (unsigned int flags) EV_THROW
1583{ 2868{
1584 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));
1585 2870
1586 memset (loop, 0, sizeof (struct ev_loop)); 2871 memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588 loop_init (EV_A_ flags); 2872 loop_init (EV_A_ flags);
1589 2873
1590 if (ev_backend (EV_A)) 2874 if (ev_backend (EV_A))
1591 return loop; 2875 return EV_A;
1592 2876
2877 ev_free (EV_A);
1593 return 0; 2878 return 0;
1594} 2879}
1595 2880
1596void 2881#endif /* multiplicity */
1597ev_loop_destroy (EV_P)
1598{
1599 loop_destroy (EV_A);
1600 ev_free (loop);
1601}
1602
1603void
1604ev_loop_fork (EV_P)
1605{
1606 postfork = 1; /* must be in line with ev_default_fork */
1607}
1608 2882
1609#if EV_VERIFY 2883#if EV_VERIFY
1610static void noinline 2884static void noinline ecb_cold
1611verify_watcher (EV_P_ W w) 2885verify_watcher (EV_P_ W w)
1612{ 2886{
1613 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));
1614 2888
1615 if (w->pending) 2889 if (w->pending)
1616 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));
1617} 2891}
1618 2892
1619static void noinline 2893static void noinline ecb_cold
1620verify_heap (EV_P_ ANHE *heap, int N) 2894verify_heap (EV_P_ ANHE *heap, int N)
1621{ 2895{
1622 int i; 2896 int i;
1623 2897
1624 for (i = HEAP0; i < N + HEAP0; ++i) 2898 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1629 2903
1630 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2904 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1631 } 2905 }
1632} 2906}
1633 2907
1634static void noinline 2908static void noinline ecb_cold
1635array_verify (EV_P_ W *ws, int cnt) 2909array_verify (EV_P_ W *ws, int cnt)
1636{ 2910{
1637 while (cnt--) 2911 while (cnt--)
1638 { 2912 {
1639 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2913 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1640 verify_watcher (EV_A_ ws [cnt]); 2914 verify_watcher (EV_A_ ws [cnt]);
1641 } 2915 }
1642} 2916}
1643#endif 2917#endif
1644 2918
1645void 2919#if EV_FEATURE_API
1646ev_loop_verify (EV_P) 2920void ecb_cold
2921ev_verify (EV_P) EV_THROW
1647{ 2922{
1648#if EV_VERIFY 2923#if EV_VERIFY
1649 int i; 2924 int i;
1650 WL w; 2925 WL w, w2;
1651 2926
1652 assert (activecnt >= -1); 2927 assert (activecnt >= -1);
1653 2928
1654 assert (fdchangemax >= fdchangecnt); 2929 assert (fdchangemax >= fdchangecnt);
1655 for (i = 0; i < fdchangecnt; ++i) 2930 for (i = 0; i < fdchangecnt; ++i)
1656 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2931 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1657 2932
1658 assert (anfdmax >= 0); 2933 assert (anfdmax >= 0);
1659 for (i = 0; i < anfdmax; ++i) 2934 for (i = 0; i < anfdmax; ++i)
2935 {
2936 int j = 0;
2937
1660 for (w = anfds [i].head; w; w = w->next) 2938 for (w = w2 = anfds [i].head; w; w = w->next)
1661 { 2939 {
1662 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
1663 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));
1664 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));
1665 } 2950 }
2951 }
1666 2952
1667 assert (timermax >= timercnt); 2953 assert (timermax >= timercnt);
1668 verify_heap (EV_A_ timers, timercnt); 2954 verify_heap (EV_A_ timers, timercnt);
1669 2955
1670#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
… …
1685#if EV_FORK_ENABLE 2971#if EV_FORK_ENABLE
1686 assert (forkmax >= forkcnt); 2972 assert (forkmax >= forkcnt);
1687 array_verify (EV_A_ (W *)forks, forkcnt); 2973 array_verify (EV_A_ (W *)forks, forkcnt);
1688#endif 2974#endif
1689 2975
2976#if EV_CLEANUP_ENABLE
2977 assert (cleanupmax >= cleanupcnt);
2978 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2979#endif
2980
1690#if EV_ASYNC_ENABLE 2981#if EV_ASYNC_ENABLE
1691 assert (asyncmax >= asynccnt); 2982 assert (asyncmax >= asynccnt);
1692 array_verify (EV_A_ (W *)asyncs, asynccnt); 2983 array_verify (EV_A_ (W *)asyncs, asynccnt);
1693#endif 2984#endif
1694 2985
2986#if EV_PREPARE_ENABLE
1695 assert (preparemax >= preparecnt); 2987 assert (preparemax >= preparecnt);
1696 array_verify (EV_A_ (W *)prepares, preparecnt); 2988 array_verify (EV_A_ (W *)prepares, preparecnt);
2989#endif
1697 2990
2991#if EV_CHECK_ENABLE
1698 assert (checkmax >= checkcnt); 2992 assert (checkmax >= checkcnt);
1699 array_verify (EV_A_ (W *)checks, checkcnt); 2993 array_verify (EV_A_ (W *)checks, checkcnt);
2994#endif
1700 2995
1701# if 0 2996# if 0
2997#if EV_CHILD_ENABLE
1702 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)
1703 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2999 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3000#endif
1704# endif 3001# endif
1705#endif 3002#endif
1706} 3003}
1707 3004#endif
1708#endif /* multiplicity */
1709 3005
1710#if EV_MULTIPLICITY 3006#if EV_MULTIPLICITY
1711struct ev_loop * 3007struct ev_loop * ecb_cold
1712ev_default_loop_init (unsigned int flags)
1713#else 3008#else
1714int 3009int
3010#endif
1715ev_default_loop (unsigned int flags) 3011ev_default_loop (unsigned int flags) EV_THROW
1716#endif
1717{ 3012{
1718 if (!ev_default_loop_ptr) 3013 if (!ev_default_loop_ptr)
1719 { 3014 {
1720#if EV_MULTIPLICITY 3015#if EV_MULTIPLICITY
1721 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3016 EV_P = ev_default_loop_ptr = &default_loop_struct;
1722#else 3017#else
1723 ev_default_loop_ptr = 1; 3018 ev_default_loop_ptr = 1;
1724#endif 3019#endif
1725 3020
1726 loop_init (EV_A_ flags); 3021 loop_init (EV_A_ flags);
1727 3022
1728 if (ev_backend (EV_A)) 3023 if (ev_backend (EV_A))
1729 { 3024 {
1730#ifndef _WIN32 3025#if EV_CHILD_ENABLE
1731 ev_signal_init (&childev, childcb, SIGCHLD); 3026 ev_signal_init (&childev, childcb, SIGCHLD);
1732 ev_set_priority (&childev, EV_MAXPRI); 3027 ev_set_priority (&childev, EV_MAXPRI);
1733 ev_signal_start (EV_A_ &childev); 3028 ev_signal_start (EV_A_ &childev);
1734 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3029 ev_unref (EV_A); /* child watcher should not keep loop alive */
1735#endif 3030#endif
… …
1740 3035
1741 return ev_default_loop_ptr; 3036 return ev_default_loop_ptr;
1742} 3037}
1743 3038
1744void 3039void
1745ev_default_destroy (void) 3040ev_loop_fork (EV_P) EV_THROW
1746{ 3041{
1747#if EV_MULTIPLICITY 3042 postfork = 1;
1748 struct ev_loop *loop = ev_default_loop_ptr;
1749#endif
1750
1751 ev_default_loop_ptr = 0;
1752
1753#ifndef _WIN32
1754 ev_ref (EV_A); /* child watcher */
1755 ev_signal_stop (EV_A_ &childev);
1756#endif
1757
1758 loop_destroy (EV_A);
1759}
1760
1761void
1762ev_default_fork (void)
1763{
1764#if EV_MULTIPLICITY
1765 struct ev_loop *loop = ev_default_loop_ptr;
1766#endif
1767
1768 postfork = 1; /* must be in line with ev_loop_fork */
1769} 3043}
1770 3044
1771/*****************************************************************************/ 3045/*****************************************************************************/
1772 3046
1773void 3047void
1774ev_invoke (EV_P_ void *w, int revents) 3048ev_invoke (EV_P_ void *w, int revents)
1775{ 3049{
1776 EV_CB_INVOKE ((W)w, revents); 3050 EV_CB_INVOKE ((W)w, revents);
1777} 3051}
1778 3052
1779inline_speed void 3053unsigned int
1780call_pending (EV_P) 3054ev_pending_count (EV_P) EV_THROW
1781{ 3055{
1782 int pri; 3056 int pri;
3057 unsigned int count = 0;
1783 3058
1784 for (pri = NUMPRI; pri--; ) 3059 for (pri = NUMPRI; pri--; )
3060 count += pendingcnt [pri];
3061
3062 return count;
3063}
3064
3065void noinline
3066ev_invoke_pending (EV_P)
3067{
3068 pendingpri = NUMPRI;
3069
3070 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3071 {
3072 --pendingpri;
3073
1785 while (pendingcnt [pri]) 3074 while (pendingcnt [pendingpri])
1786 { 3075 {
1787 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3076 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1788 3077
1789 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1790 /* ^ this is no longer true, as pending_w could be here */
1791
1792 p->w->pending = 0; 3078 p->w->pending = 0;
1793 EV_CB_INVOKE (p->w, p->events); 3079 EV_CB_INVOKE (p->w, p->events);
1794 EV_FREQUENT_CHECK; 3080 EV_FREQUENT_CHECK;
1795 } 3081 }
3082 }
1796} 3083}
1797 3084
1798#if EV_IDLE_ENABLE 3085#if EV_IDLE_ENABLE
1799/* make idle watchers pending. this handles the "call-idle */ 3086/* make idle watchers pending. this handles the "call-idle */
1800/* only when higher priorities are idle" logic */ 3087/* only when higher priorities are idle" logic */
… …
1852 EV_FREQUENT_CHECK; 3139 EV_FREQUENT_CHECK;
1853 feed_reverse (EV_A_ (W)w); 3140 feed_reverse (EV_A_ (W)w);
1854 } 3141 }
1855 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3142 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856 3143
1857 feed_reverse_done (EV_A_ EV_TIMEOUT); 3144 feed_reverse_done (EV_A_ EV_TIMER);
1858 } 3145 }
1859} 3146}
1860 3147
1861#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
1862/* make periodics pending */ 3174/* make periodics pending */
1863inline_size void 3175inline_size void
1864periodics_reify (EV_P) 3176periodics_reify (EV_P)
1865{ 3177{
1866 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
1867 3179
1868 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3180 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1869 { 3181 {
1870 int feed_count = 0;
1871
1872 do 3182 do
1873 { 3183 {
1874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3184 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1875 3185
1876 /*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)));*/
… …
1885 ANHE_at_cache (periodics [HEAP0]); 3195 ANHE_at_cache (periodics [HEAP0]);
1886 downheap (periodics, periodiccnt, HEAP0); 3196 downheap (periodics, periodiccnt, HEAP0);
1887 } 3197 }
1888 else if (w->interval) 3198 else if (w->interval)
1889 { 3199 {
1890 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3200 periodic_recalc (EV_A_ w);
1891 /* if next trigger time is not sufficiently in the future, put it there */
1892 /* this might happen because of floating point inexactness */
1893 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1894 {
1895 ev_at (w) += w->interval;
1896
1897 /* if interval is unreasonably low we might still have a time in the past */
1898 /* so correct this. this will make the periodic very inexact, but the user */
1899 /* has effectively asked to get triggered more often than possible */
1900 if (ev_at (w) < ev_rt_now)
1901 ev_at (w) = ev_rt_now;
1902 }
1903
1904 ANHE_at_cache (periodics [HEAP0]); 3201 ANHE_at_cache (periodics [HEAP0]);
1905 downheap (periodics, periodiccnt, HEAP0); 3202 downheap (periodics, periodiccnt, HEAP0);
1906 } 3203 }
1907 else 3204 else
1908 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3205 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1915 feed_reverse_done (EV_A_ EV_PERIODIC); 3212 feed_reverse_done (EV_A_ EV_PERIODIC);
1916 } 3213 }
1917} 3214}
1918 3215
1919/* simply recalculate all periodics */ 3216/* simply recalculate all periodics */
1920/* 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? */
1921static void noinline 3218static void noinline ecb_cold
1922periodics_reschedule (EV_P) 3219periodics_reschedule (EV_P)
1923{ 3220{
1924 int i; 3221 int i;
1925 3222
1926 /* adjust periodics after time jump */ 3223 /* adjust periodics after time jump */
… …
1929 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3226 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1930 3227
1931 if (w->reschedule_cb) 3228 if (w->reschedule_cb)
1932 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3229 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 3230 else if (w->interval)
1934 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3231 periodic_recalc (EV_A_ w);
1935 3232
1936 ANHE_at_cache (periodics [i]); 3233 ANHE_at_cache (periodics [i]);
1937 } 3234 }
1938 3235
1939 reheap (periodics, periodiccnt); 3236 reheap (periodics, periodiccnt);
1940} 3237}
1941#endif 3238#endif
1942 3239
1943/* adjust all timers by a given offset */ 3240/* adjust all timers by a given offset */
1944static void noinline 3241static void noinline ecb_cold
1945timers_reschedule (EV_P_ ev_tstamp adjust) 3242timers_reschedule (EV_P_ ev_tstamp adjust)
1946{ 3243{
1947 int i; 3244 int i;
1948 3245
1949 for (i = 0; i < timercnt; ++i) 3246 for (i = 0; i < timercnt; ++i)
… …
1953 ANHE_at_cache (*he); 3250 ANHE_at_cache (*he);
1954 } 3251 }
1955} 3252}
1956 3253
1957/* fetch new monotonic and realtime times from the kernel */ 3254/* fetch new monotonic and realtime times from the kernel */
1958/* also detetc if there was a timejump, and act accordingly */ 3255/* also detect if there was a timejump, and act accordingly */
1959inline_speed void 3256inline_speed void
1960time_update (EV_P_ ev_tstamp max_block) 3257time_update (EV_P_ ev_tstamp max_block)
1961{ 3258{
1962#if EV_USE_MONOTONIC 3259#if EV_USE_MONOTONIC
1963 if (expect_true (have_monotonic)) 3260 if (expect_true (have_monotonic))
… …
1986 * 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
1987 * in the unlikely event of having been preempted here. 3284 * in the unlikely event of having been preempted here.
1988 */ 3285 */
1989 for (i = 4; --i; ) 3286 for (i = 4; --i; )
1990 { 3287 {
3288 ev_tstamp diff;
1991 rtmn_diff = ev_rt_now - mn_now; 3289 rtmn_diff = ev_rt_now - mn_now;
1992 3290
3291 diff = odiff - rtmn_diff;
3292
1993 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3293 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1994 return; /* all is well */ 3294 return; /* all is well */
1995 3295
1996 ev_rt_now = ev_time (); 3296 ev_rt_now = ev_time ();
1997 mn_now = get_clock (); 3297 mn_now = get_clock ();
1998 now_floor = mn_now; 3298 now_floor = mn_now;
… …
2020 3320
2021 mn_now = ev_rt_now; 3321 mn_now = ev_rt_now;
2022 } 3322 }
2023} 3323}
2024 3324
2025static int loop_done; 3325int
2026
2027void
2028ev_loop (EV_P_ int flags) 3326ev_run (EV_P_ int flags)
2029{ 3327{
3328#if EV_FEATURE_API
3329 ++loop_depth;
3330#endif
3331
3332 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3333
2030 loop_done = EVUNLOOP_CANCEL; 3334 loop_done = EVBREAK_CANCEL;
2031 3335
2032 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3336 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033 3337
2034 do 3338 do
2035 { 3339 {
2036#if EV_VERIFY >= 2 3340#if EV_VERIFY >= 2
2037 ev_loop_verify (EV_A); 3341 ev_verify (EV_A);
2038#endif 3342#endif
2039 3343
2040#ifndef _WIN32 3344#ifndef _WIN32
2041 if (expect_false (curpid)) /* penalise the forking check even more */ 3345 if (expect_false (curpid)) /* penalise the forking check even more */
2042 if (expect_false (getpid () != curpid)) 3346 if (expect_false (getpid () != curpid))
… …
2050 /* we might have forked, so queue fork handlers */ 3354 /* we might have forked, so queue fork handlers */
2051 if (expect_false (postfork)) 3355 if (expect_false (postfork))
2052 if (forkcnt) 3356 if (forkcnt)
2053 { 3357 {
2054 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3358 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055 call_pending (EV_A); 3359 EV_INVOKE_PENDING;
2056 } 3360 }
2057#endif 3361#endif
2058 3362
3363#if EV_PREPARE_ENABLE
2059 /* queue prepare watchers (and execute them) */ 3364 /* queue prepare watchers (and execute them) */
2060 if (expect_false (preparecnt)) 3365 if (expect_false (preparecnt))
2061 { 3366 {
2062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3367 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063 call_pending (EV_A); 3368 EV_INVOKE_PENDING;
2064 } 3369 }
3370#endif
3371
3372 if (expect_false (loop_done))
3373 break;
2065 3374
2066 /* we might have forked, so reify kernel state if necessary */ 3375 /* we might have forked, so reify kernel state if necessary */
2067 if (expect_false (postfork)) 3376 if (expect_false (postfork))
2068 loop_fork (EV_A); 3377 loop_fork (EV_A);
2069 3378
… …
2073 /* calculate blocking time */ 3382 /* calculate blocking time */
2074 { 3383 {
2075 ev_tstamp waittime = 0.; 3384 ev_tstamp waittime = 0.;
2076 ev_tstamp sleeptime = 0.; 3385 ev_tstamp sleeptime = 0.;
2077 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
2078 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3398 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2079 { 3399 {
2080 /* remember old timestamp for io_blocktime calculation */
2081 ev_tstamp prev_mn_now = mn_now;
2082
2083 /* update time to cancel out callback processing overhead */
2084 time_update (EV_A_ 1e100);
2085
2086 waittime = MAX_BLOCKTIME; 3400 waittime = MAX_BLOCKTIME;
2087 3401
2088 if (timercnt) 3402 if (timercnt)
2089 { 3403 {
2090 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3404 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2091 if (waittime > to) waittime = to; 3405 if (waittime > to) waittime = to;
2092 } 3406 }
2093 3407
2094#if EV_PERIODIC_ENABLE 3408#if EV_PERIODIC_ENABLE
2095 if (periodiccnt) 3409 if (periodiccnt)
2096 { 3410 {
2097 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3411 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2098 if (waittime > to) waittime = to; 3412 if (waittime > to) waittime = to;
2099 } 3413 }
2100#endif 3414#endif
2101 3415
2102 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3416 /* don't let timeouts decrease the waittime below timeout_blocktime */
2103 if (expect_false (waittime < timeout_blocktime)) 3417 if (expect_false (waittime < timeout_blocktime))
2104 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;
2105 3424
2106 /* extra check because io_blocktime is commonly 0 */ 3425 /* extra check because io_blocktime is commonly 0 */
2107 if (expect_false (io_blocktime)) 3426 if (expect_false (io_blocktime))
2108 { 3427 {
2109 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3428 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2110 3429
2111 if (sleeptime > waittime - backend_fudge) 3430 if (sleeptime > waittime - backend_mintime)
2112 sleeptime = waittime - backend_fudge; 3431 sleeptime = waittime - backend_mintime;
2113 3432
2114 if (expect_true (sleeptime > 0.)) 3433 if (expect_true (sleeptime > 0.))
2115 { 3434 {
2116 ev_sleep (sleeptime); 3435 ev_sleep (sleeptime);
2117 waittime -= sleeptime; 3436 waittime -= sleeptime;
2118 } 3437 }
2119 } 3438 }
2120 } 3439 }
2121 3440
3441#if EV_FEATURE_API
2122 ++loop_count; 3442 ++loop_count;
3443#endif
3444 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2123 backend_poll (EV_A_ waittime); 3445 backend_poll (EV_A_ waittime);
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
2124 3457
2125 /* update ev_rt_now, do magic */ 3458 /* update ev_rt_now, do magic */
2126 time_update (EV_A_ waittime + sleeptime); 3459 time_update (EV_A_ waittime + sleeptime);
2127 } 3460 }
2128 3461
… …
2135#if EV_IDLE_ENABLE 3468#if EV_IDLE_ENABLE
2136 /* queue idle watchers unless other events are pending */ 3469 /* queue idle watchers unless other events are pending */
2137 idle_reify (EV_A); 3470 idle_reify (EV_A);
2138#endif 3471#endif
2139 3472
3473#if EV_CHECK_ENABLE
2140 /* queue check watchers, to be executed first */ 3474 /* queue check watchers, to be executed first */
2141 if (expect_false (checkcnt)) 3475 if (expect_false (checkcnt))
2142 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3476 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3477#endif
2143 3478
2144 call_pending (EV_A); 3479 EV_INVOKE_PENDING;
2145 } 3480 }
2146 while (expect_true ( 3481 while (expect_true (
2147 activecnt 3482 activecnt
2148 && !loop_done 3483 && !loop_done
2149 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3484 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2150 )); 3485 ));
2151 3486
2152 if (loop_done == EVUNLOOP_ONE) 3487 if (loop_done == EVBREAK_ONE)
2153 loop_done = EVUNLOOP_CANCEL; 3488 loop_done = EVBREAK_CANCEL;
3489
3490#if EV_FEATURE_API
3491 --loop_depth;
3492#endif
3493
3494 return activecnt;
2154} 3495}
2155 3496
2156void 3497void
2157ev_unloop (EV_P_ int how) 3498ev_break (EV_P_ int how) EV_THROW
2158{ 3499{
2159 loop_done = how; 3500 loop_done = how;
2160} 3501}
2161 3502
2162void 3503void
2163ev_ref (EV_P) 3504ev_ref (EV_P) EV_THROW
2164{ 3505{
2165 ++activecnt; 3506 ++activecnt;
2166} 3507}
2167 3508
2168void 3509void
2169ev_unref (EV_P) 3510ev_unref (EV_P) EV_THROW
2170{ 3511{
2171 --activecnt; 3512 --activecnt;
2172} 3513}
2173 3514
2174void 3515void
2175ev_now_update (EV_P) 3516ev_now_update (EV_P) EV_THROW
2176{ 3517{
2177 time_update (EV_A_ 1e100); 3518 time_update (EV_A_ 1e100);
2178} 3519}
2179 3520
2180void 3521void
2181ev_suspend (EV_P) 3522ev_suspend (EV_P) EV_THROW
2182{ 3523{
2183 ev_now_update (EV_A); 3524 ev_now_update (EV_A);
2184} 3525}
2185 3526
2186void 3527void
2187ev_resume (EV_P) 3528ev_resume (EV_P) EV_THROW
2188{ 3529{
2189 ev_tstamp mn_prev = mn_now; 3530 ev_tstamp mn_prev = mn_now;
2190 3531
2191 ev_now_update (EV_A); 3532 ev_now_update (EV_A);
2192 timers_reschedule (EV_A_ mn_now - mn_prev); 3533 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2209inline_size void 3550inline_size void
2210wlist_del (WL *head, WL elem) 3551wlist_del (WL *head, WL elem)
2211{ 3552{
2212 while (*head) 3553 while (*head)
2213 { 3554 {
2214 if (*head == elem) 3555 if (expect_true (*head == elem))
2215 { 3556 {
2216 *head = elem->next; 3557 *head = elem->next;
2217 return; 3558 break;
2218 } 3559 }
2219 3560
2220 head = &(*head)->next; 3561 head = &(*head)->next;
2221 } 3562 }
2222} 3563}
… …
2231 w->pending = 0; 3572 w->pending = 0;
2232 } 3573 }
2233} 3574}
2234 3575
2235int 3576int
2236ev_clear_pending (EV_P_ void *w) 3577ev_clear_pending (EV_P_ void *w) EV_THROW
2237{ 3578{
2238 W w_ = (W)w; 3579 W w_ = (W)w;
2239 int pending = w_->pending; 3580 int pending = w_->pending;
2240 3581
2241 if (expect_true (pending)) 3582 if (expect_true (pending))
… …
2250} 3591}
2251 3592
2252inline_size void 3593inline_size void
2253pri_adjust (EV_P_ W w) 3594pri_adjust (EV_P_ W w)
2254{ 3595{
2255 int pri = w->priority; 3596 int pri = ev_priority (w);
2256 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3597 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2257 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3598 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2258 w->priority = pri; 3599 ev_set_priority (w, pri);
2259} 3600}
2260 3601
2261inline_speed void 3602inline_speed void
2262ev_start (EV_P_ W w, int active) 3603ev_start (EV_P_ W w, int active)
2263{ 3604{
… …
2274} 3615}
2275 3616
2276/*****************************************************************************/ 3617/*****************************************************************************/
2277 3618
2278void noinline 3619void noinline
2279ev_io_start (EV_P_ ev_io *w) 3620ev_io_start (EV_P_ ev_io *w) EV_THROW
2280{ 3621{
2281 int fd = w->fd; 3622 int fd = w->fd;
2282 3623
2283 if (expect_false (ev_is_active (w))) 3624 if (expect_false (ev_is_active (w)))
2284 return; 3625 return;
2285 3626
2286 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3627 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2287 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))));
2288 3629
2289 EV_FREQUENT_CHECK; 3630 EV_FREQUENT_CHECK;
2290 3631
2291 ev_start (EV_A_ (W)w, 1); 3632 ev_start (EV_A_ (W)w, 1);
2292 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3633 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2293 wlist_add (&anfds[fd].head, (WL)w); 3634 wlist_add (&anfds[fd].head, (WL)w);
2294 3635
3636 /* common bug, apparently */
3637 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3638
2295 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3639 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2296 w->events &= ~EV__IOFDSET; 3640 w->events &= ~EV__IOFDSET;
2297 3641
2298 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
2299} 3643}
2300 3644
2301void noinline 3645void noinline
2302ev_io_stop (EV_P_ ev_io *w) 3646ev_io_stop (EV_P_ ev_io *w) EV_THROW
2303{ 3647{
2304 clear_pending (EV_A_ (W)w); 3648 clear_pending (EV_A_ (W)w);
2305 if (expect_false (!ev_is_active (w))) 3649 if (expect_false (!ev_is_active (w)))
2306 return; 3650 return;
2307 3651
… …
2310 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
2311 3655
2312 wlist_del (&anfds[w->fd].head, (WL)w); 3656 wlist_del (&anfds[w->fd].head, (WL)w);
2313 ev_stop (EV_A_ (W)w); 3657 ev_stop (EV_A_ (W)w);
2314 3658
2315 fd_change (EV_A_ w->fd, 1); 3659 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2316 3660
2317 EV_FREQUENT_CHECK; 3661 EV_FREQUENT_CHECK;
2318} 3662}
2319 3663
2320void noinline 3664void noinline
2321ev_timer_start (EV_P_ ev_timer *w) 3665ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2322{ 3666{
2323 if (expect_false (ev_is_active (w))) 3667 if (expect_false (ev_is_active (w)))
2324 return; 3668 return;
2325 3669
2326 ev_at (w) += mn_now; 3670 ev_at (w) += mn_now;
… …
2340 3684
2341 /*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));*/
2342} 3686}
2343 3687
2344void noinline 3688void noinline
2345ev_timer_stop (EV_P_ ev_timer *w) 3689ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2346{ 3690{
2347 clear_pending (EV_A_ (W)w); 3691 clear_pending (EV_A_ (W)w);
2348 if (expect_false (!ev_is_active (w))) 3692 if (expect_false (!ev_is_active (w)))
2349 return; 3693 return;
2350 3694
… …
2362 timers [active] = timers [timercnt + HEAP0]; 3706 timers [active] = timers [timercnt + HEAP0];
2363 adjustheap (timers, timercnt, active); 3707 adjustheap (timers, timercnt, active);
2364 } 3708 }
2365 } 3709 }
2366 3710
2367 EV_FREQUENT_CHECK;
2368
2369 ev_at (w) -= mn_now; 3711 ev_at (w) -= mn_now;
2370 3712
2371 ev_stop (EV_A_ (W)w); 3713 ev_stop (EV_A_ (W)w);
3714
3715 EV_FREQUENT_CHECK;
2372} 3716}
2373 3717
2374void noinline 3718void noinline
2375ev_timer_again (EV_P_ ev_timer *w) 3719ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2376{ 3720{
2377 EV_FREQUENT_CHECK; 3721 EV_FREQUENT_CHECK;
3722
3723 clear_pending (EV_A_ (W)w);
2378 3724
2379 if (ev_is_active (w)) 3725 if (ev_is_active (w))
2380 { 3726 {
2381 if (w->repeat) 3727 if (w->repeat)
2382 { 3728 {
… …
2394 } 3740 }
2395 3741
2396 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
2397} 3743}
2398 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
2399#if EV_PERIODIC_ENABLE 3751#if EV_PERIODIC_ENABLE
2400void noinline 3752void noinline
2401ev_periodic_start (EV_P_ ev_periodic *w) 3753ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2402{ 3754{
2403 if (expect_false (ev_is_active (w))) 3755 if (expect_false (ev_is_active (w)))
2404 return; 3756 return;
2405 3757
2406 if (w->reschedule_cb) 3758 if (w->reschedule_cb)
2407 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3759 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2408 else if (w->interval) 3760 else if (w->interval)
2409 { 3761 {
2410 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.));
2411 /* this formula differs from the one in periodic_reify because we do not always round up */ 3763 periodic_recalc (EV_A_ w);
2412 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2413 } 3764 }
2414 else 3765 else
2415 ev_at (w) = w->offset; 3766 ev_at (w) = w->offset;
2416 3767
2417 EV_FREQUENT_CHECK; 3768 EV_FREQUENT_CHECK;
… …
2427 3778
2428 /*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));*/
2429} 3780}
2430 3781
2431void noinline 3782void noinline
2432ev_periodic_stop (EV_P_ ev_periodic *w) 3783ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2433{ 3784{
2434 clear_pending (EV_A_ (W)w); 3785 clear_pending (EV_A_ (W)w);
2435 if (expect_false (!ev_is_active (w))) 3786 if (expect_false (!ev_is_active (w)))
2436 return; 3787 return;
2437 3788
… …
2449 periodics [active] = periodics [periodiccnt + HEAP0]; 3800 periodics [active] = periodics [periodiccnt + HEAP0];
2450 adjustheap (periodics, periodiccnt, active); 3801 adjustheap (periodics, periodiccnt, active);
2451 } 3802 }
2452 } 3803 }
2453 3804
2454 EV_FREQUENT_CHECK;
2455
2456 ev_stop (EV_A_ (W)w); 3805 ev_stop (EV_A_ (W)w);
3806
3807 EV_FREQUENT_CHECK;
2457} 3808}
2458 3809
2459void noinline 3810void noinline
2460ev_periodic_again (EV_P_ ev_periodic *w) 3811ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2461{ 3812{
2462 /* TODO: use adjustheap and recalculation */ 3813 /* TODO: use adjustheap and recalculation */
2463 ev_periodic_stop (EV_A_ w); 3814 ev_periodic_stop (EV_A_ w);
2464 ev_periodic_start (EV_A_ w); 3815 ev_periodic_start (EV_A_ w);
2465} 3816}
… …
2467 3818
2468#ifndef SA_RESTART 3819#ifndef SA_RESTART
2469# define SA_RESTART 0 3820# define SA_RESTART 0
2470#endif 3821#endif
2471 3822
3823#if EV_SIGNAL_ENABLE
3824
2472void noinline 3825void noinline
2473ev_signal_start (EV_P_ ev_signal *w) 3826ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2474{ 3827{
2475#if EV_MULTIPLICITY
2476 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2477#endif
2478 if (expect_false (ev_is_active (w))) 3828 if (expect_false (ev_is_active (w)))
2479 return; 3829 return;
2480 3830
2481 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));
2482 3832
2483 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));
2484 3836
2485 EV_FREQUENT_CHECK; 3837 signals [w->signum - 1].loop = EV_A;
3838 ECB_MEMORY_FENCE_RELEASE;
3839#endif
2486 3840
3841 EV_FREQUENT_CHECK;
3842
3843#if EV_USE_SIGNALFD
3844 if (sigfd == -2)
2487 { 3845 {
2488#ifndef _WIN32 3846 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2489 sigset_t full, prev; 3847 if (sigfd < 0 && errno == EINVAL)
2490 sigfillset (&full); 3848 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2491 sigprocmask (SIG_SETMASK, &full, &prev);
2492#endif
2493 3849
2494 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 */
2495 3853
2496#ifndef _WIN32 3854 sigemptyset (&sigfd_set);
2497 sigprocmask (SIG_SETMASK, &prev, 0); 3855
2498#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 }
2499 } 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
2500 3872
2501 ev_start (EV_A_ (W)w, 1); 3873 ev_start (EV_A_ (W)w, 1);
2502 wlist_add (&signals [w->signum - 1].head, (WL)w); 3874 wlist_add (&signals [w->signum - 1].head, (WL)w);
2503 3875
2504 if (!((WL)w)->next) 3876 if (!((WL)w)->next)
3877# if EV_USE_SIGNALFD
3878 if (sigfd < 0) /*TODO*/
3879# endif
2505 { 3880 {
2506#if _WIN32 3881# ifdef _WIN32
3882 evpipe_init (EV_A);
3883
2507 signal (w->signum, ev_sighandler); 3884 signal (w->signum, ev_sighandler);
2508#else 3885# else
2509 struct sigaction sa; 3886 struct sigaction sa;
3887
3888 evpipe_init (EV_A);
3889
2510 sa.sa_handler = ev_sighandler; 3890 sa.sa_handler = ev_sighandler;
2511 sigfillset (&sa.sa_mask); 3891 sigfillset (&sa.sa_mask);
2512 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 */
2513 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 }
2514#endif 3901#endif
2515 } 3902 }
2516 3903
2517 EV_FREQUENT_CHECK; 3904 EV_FREQUENT_CHECK;
2518} 3905}
2519 3906
2520void noinline 3907void noinline
2521ev_signal_stop (EV_P_ ev_signal *w) 3908ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2522{ 3909{
2523 clear_pending (EV_A_ (W)w); 3910 clear_pending (EV_A_ (W)w);
2524 if (expect_false (!ev_is_active (w))) 3911 if (expect_false (!ev_is_active (w)))
2525 return; 3912 return;
2526 3913
… …
2528 3915
2529 wlist_del (&signals [w->signum - 1].head, (WL)w); 3916 wlist_del (&signals [w->signum - 1].head, (WL)w);
2530 ev_stop (EV_A_ (W)w); 3917 ev_stop (EV_A_ (W)w);
2531 3918
2532 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
2533 signal (w->signum, SIG_DFL); 3938 signal (w->signum, SIG_DFL);
3939 }
2534 3940
2535 EV_FREQUENT_CHECK; 3941 EV_FREQUENT_CHECK;
2536} 3942}
3943
3944#endif
3945
3946#if EV_CHILD_ENABLE
2537 3947
2538void 3948void
2539ev_child_start (EV_P_ ev_child *w) 3949ev_child_start (EV_P_ ev_child *w) EV_THROW
2540{ 3950{
2541#if EV_MULTIPLICITY 3951#if EV_MULTIPLICITY
2542 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));
2543#endif 3953#endif
2544 if (expect_false (ev_is_active (w))) 3954 if (expect_false (ev_is_active (w)))
2545 return; 3955 return;
2546 3956
2547 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
2548 3958
2549 ev_start (EV_A_ (W)w, 1); 3959 ev_start (EV_A_ (W)w, 1);
2550 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3960 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2551 3961
2552 EV_FREQUENT_CHECK; 3962 EV_FREQUENT_CHECK;
2553} 3963}
2554 3964
2555void 3965void
2556ev_child_stop (EV_P_ ev_child *w) 3966ev_child_stop (EV_P_ ev_child *w) EV_THROW
2557{ 3967{
2558 clear_pending (EV_A_ (W)w); 3968 clear_pending (EV_A_ (W)w);
2559 if (expect_false (!ev_is_active (w))) 3969 if (expect_false (!ev_is_active (w)))
2560 return; 3970 return;
2561 3971
2562 EV_FREQUENT_CHECK; 3972 EV_FREQUENT_CHECK;
2563 3973
2564 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3974 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2565 ev_stop (EV_A_ (W)w); 3975 ev_stop (EV_A_ (W)w);
2566 3976
2567 EV_FREQUENT_CHECK; 3977 EV_FREQUENT_CHECK;
2568} 3978}
3979
3980#endif
2569 3981
2570#if EV_STAT_ENABLE 3982#if EV_STAT_ENABLE
2571 3983
2572# ifdef _WIN32 3984# ifdef _WIN32
2573# undef lstat 3985# undef lstat
… …
2579#define MIN_STAT_INTERVAL 0.1074891 3991#define MIN_STAT_INTERVAL 0.1074891
2580 3992
2581static 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);
2582 3994
2583#if EV_USE_INOTIFY 3995#if EV_USE_INOTIFY
2584# 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)
2585 3999
2586static void noinline 4000static void noinline
2587infy_add (EV_P_ ev_stat *w) 4001infy_add (EV_P_ ev_stat *w)
2588{ 4002{
2589 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);
2590 4007
2591 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 */
2592 { 4034 }
4035 else
4036 {
4037 /* can't use inotify, continue to stat */
2593 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4038 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2594 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2595 4039
2596 /* monitor some parent directory for speedup hints */ 4040 /* if path is not there, monitor some parent directory for speedup hints */
2597 /* 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, */
2598 /* but an efficiency issue only */ 4042 /* but an efficiency issue only */
2599 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4043 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2600 { 4044 {
2601 char path [4096]; 4045 char path [4096];
… …
2611 if (!pend || pend == path) 4055 if (!pend || pend == path)
2612 break; 4056 break;
2613 4057
2614 *pend = 0; 4058 *pend = 0;
2615 w->wd = inotify_add_watch (fs_fd, path, mask); 4059 w->wd = inotify_add_watch (fs_fd, path, mask);
2616 } 4060 }
2617 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4061 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2618 } 4062 }
2619 } 4063 }
2620 4064
2621 if (w->wd >= 0) 4065 if (w->wd >= 0)
2622 {
2623 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);
2624 4067
2625 /* now local changes will be tracked by inotify, but remote changes won't */ 4068 /* now re-arm timer, if required */
2626 /* unless the filesystem it known to be local, we therefore still poll */ 4069 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2627 /* also do poll on <2.6.25, but with normal frequency */
2628 struct statfs sfs;
2629
2630 if (fs_2625 && !statfs (w->path, &sfs))
2631 if (sfs.f_type == 0x1373 /* devfs */
2632 || sfs.f_type == 0xEF53 /* ext2/3 */
2633 || sfs.f_type == 0x3153464a /* jfs */
2634 || sfs.f_type == 0x52654973 /* reiser3 */
2635 || sfs.f_type == 0x01021994 /* tempfs */
2636 || sfs.f_type == 0x58465342 /* xfs */)
2637 return;
2638
2639 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2640 ev_timer_again (EV_A_ &w->timer); 4070 ev_timer_again (EV_A_ &w->timer);
2641 } 4071 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2642} 4072}
2643 4073
2644static void noinline 4074static void noinline
2645infy_del (EV_P_ ev_stat *w) 4075infy_del (EV_P_ ev_stat *w)
2646{ 4076{
… …
2649 4079
2650 if (wd < 0) 4080 if (wd < 0)
2651 return; 4081 return;
2652 4082
2653 w->wd = -2; 4083 w->wd = -2;
2654 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4084 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2655 wlist_del (&fs_hash [slot].head, (WL)w); 4085 wlist_del (&fs_hash [slot].head, (WL)w);
2656 4086
2657 /* remove this watcher, if others are watching it, they will rearm */ 4087 /* remove this watcher, if others are watching it, they will rearm */
2658 inotify_rm_watch (fs_fd, wd); 4088 inotify_rm_watch (fs_fd, wd);
2659} 4089}
… …
2661static void noinline 4091static void noinline
2662infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4092infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2663{ 4093{
2664 if (slot < 0) 4094 if (slot < 0)
2665 /* overflow, need to check for all hash slots */ 4095 /* overflow, need to check for all hash slots */
2666 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4096 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2667 infy_wd (EV_A_ slot, wd, ev); 4097 infy_wd (EV_A_ slot, wd, ev);
2668 else 4098 else
2669 { 4099 {
2670 WL w_; 4100 WL w_;
2671 4101
2672 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4102 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2673 { 4103 {
2674 ev_stat *w = (ev_stat *)w_; 4104 ev_stat *w = (ev_stat *)w_;
2675 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 */
2676 4106
2677 if (w->wd == wd || wd == -1) 4107 if (w->wd == wd || wd == -1)
2678 { 4108 {
2679 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4109 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2680 { 4110 {
2681 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);
2682 w->wd = -1; 4112 w->wd = -1;
2683 infy_add (EV_A_ w); /* re-add, no matter what */ 4113 infy_add (EV_A_ w); /* re-add, no matter what */
2684 } 4114 }
2685 4115
2686 stat_timer_cb (EV_A_ &w->timer, 0); 4116 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2691 4121
2692static void 4122static void
2693infy_cb (EV_P_ ev_io *w, int revents) 4123infy_cb (EV_P_ ev_io *w, int revents)
2694{ 4124{
2695 char buf [EV_INOTIFY_BUFSIZE]; 4125 char buf [EV_INOTIFY_BUFSIZE];
2696 struct inotify_event *ev = (struct inotify_event *)buf;
2697 int ofs; 4126 int ofs;
2698 int len = read (fs_fd, buf, sizeof (buf)); 4127 int len = read (fs_fd, buf, sizeof (buf));
2699 4128
2700 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);
2701 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 }
2702} 4135}
2703 4136
2704inline_size void 4137inline_size void ecb_cold
2705check_2625 (EV_P) 4138ev_check_2625 (EV_P)
2706{ 4139{
2707 /* kernels < 2.6.25 are borked 4140 /* kernels < 2.6.25 are borked
2708 * 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
2709 */ 4142 */
2710 struct utsname buf; 4143 if (ev_linux_version () < 0x020619)
2711 int major, minor, micro;
2712
2713 if (uname (&buf))
2714 return; 4144 return;
2715 4145
2716 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2717 return;
2718
2719 if (major < 2
2720 || (major == 2 && minor < 6)
2721 || (major == 2 && minor == 6 && micro < 25))
2722 return;
2723
2724 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 ();
2725} 4158}
2726 4159
2727inline_size void 4160inline_size void
2728infy_init (EV_P) 4161infy_init (EV_P)
2729{ 4162{
2730 if (fs_fd != -2) 4163 if (fs_fd != -2)
2731 return; 4164 return;
2732 4165
2733 fs_fd = -1; 4166 fs_fd = -1;
2734 4167
2735 check_2625 (EV_A); 4168 ev_check_2625 (EV_A);
2736 4169
2737 fs_fd = inotify_init (); 4170 fs_fd = infy_newfd ();
2738 4171
2739 if (fs_fd >= 0) 4172 if (fs_fd >= 0)
2740 { 4173 {
4174 fd_intern (fs_fd);
2741 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4175 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2742 ev_set_priority (&fs_w, EV_MAXPRI); 4176 ev_set_priority (&fs_w, EV_MAXPRI);
2743 ev_io_start (EV_A_ &fs_w); 4177 ev_io_start (EV_A_ &fs_w);
4178 ev_unref (EV_A);
2744 } 4179 }
2745} 4180}
2746 4181
2747inline_size void 4182inline_size void
2748infy_fork (EV_P) 4183infy_fork (EV_P)
… …
2750 int slot; 4185 int slot;
2751 4186
2752 if (fs_fd < 0) 4187 if (fs_fd < 0)
2753 return; 4188 return;
2754 4189
4190 ev_ref (EV_A);
4191 ev_io_stop (EV_A_ &fs_w);
2755 close (fs_fd); 4192 close (fs_fd);
2756 fs_fd = inotify_init (); 4193 fs_fd = infy_newfd ();
2757 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
2758 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4203 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2759 { 4204 {
2760 WL w_ = fs_hash [slot].head; 4205 WL w_ = fs_hash [slot].head;
2761 fs_hash [slot].head = 0; 4206 fs_hash [slot].head = 0;
2762 4207
2763 while (w_) 4208 while (w_)
… …
2768 w->wd = -1; 4213 w->wd = -1;
2769 4214
2770 if (fs_fd >= 0) 4215 if (fs_fd >= 0)
2771 infy_add (EV_A_ w); /* re-add, no matter what */ 4216 infy_add (EV_A_ w); /* re-add, no matter what */
2772 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);
2773 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 }
2774 } 4224 }
2775 } 4225 }
2776} 4226}
2777 4227
2778#endif 4228#endif
… …
2782#else 4232#else
2783# define EV_LSTAT(p,b) lstat (p, b) 4233# define EV_LSTAT(p,b) lstat (p, b)
2784#endif 4234#endif
2785 4235
2786void 4236void
2787ev_stat_stat (EV_P_ ev_stat *w) 4237ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2788{ 4238{
2789 if (lstat (w->path, &w->attr) < 0) 4239 if (lstat (w->path, &w->attr) < 0)
2790 w->attr.st_nlink = 0; 4240 w->attr.st_nlink = 0;
2791 else if (!w->attr.st_nlink) 4241 else if (!w->attr.st_nlink)
2792 w->attr.st_nlink = 1; 4242 w->attr.st_nlink = 1;
… …
2795static void noinline 4245static void noinline
2796stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4246stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2797{ 4247{
2798 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4248 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2799 4249
2800 /* we copy this here each the time so that */ 4250 ev_statdata prev = w->attr;
2801 /* prev has the old value when the callback gets invoked */
2802 w->prev = w->attr;
2803 ev_stat_stat (EV_A_ w); 4251 ev_stat_stat (EV_A_ w);
2804 4252
2805 /* 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 */
2806 if ( 4254 if (
2807 w->prev.st_dev != w->attr.st_dev 4255 prev.st_dev != w->attr.st_dev
2808 || w->prev.st_ino != w->attr.st_ino 4256 || prev.st_ino != w->attr.st_ino
2809 || w->prev.st_mode != w->attr.st_mode 4257 || prev.st_mode != w->attr.st_mode
2810 || w->prev.st_nlink != w->attr.st_nlink 4258 || prev.st_nlink != w->attr.st_nlink
2811 || w->prev.st_uid != w->attr.st_uid 4259 || prev.st_uid != w->attr.st_uid
2812 || w->prev.st_gid != w->attr.st_gid 4260 || prev.st_gid != w->attr.st_gid
2813 || w->prev.st_rdev != w->attr.st_rdev 4261 || prev.st_rdev != w->attr.st_rdev
2814 || w->prev.st_size != w->attr.st_size 4262 || prev.st_size != w->attr.st_size
2815 || w->prev.st_atime != w->attr.st_atime 4263 || prev.st_atime != w->attr.st_atime
2816 || w->prev.st_mtime != w->attr.st_mtime 4264 || prev.st_mtime != w->attr.st_mtime
2817 || w->prev.st_ctime != w->attr.st_ctime 4265 || prev.st_ctime != w->attr.st_ctime
2818 ) { 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
2819 #if EV_USE_INOTIFY 4272 #if EV_USE_INOTIFY
2820 if (fs_fd >= 0) 4273 if (fs_fd >= 0)
2821 { 4274 {
2822 infy_del (EV_A_ w); 4275 infy_del (EV_A_ w);
2823 infy_add (EV_A_ w); 4276 infy_add (EV_A_ w);
… …
2828 ev_feed_event (EV_A_ w, EV_STAT); 4281 ev_feed_event (EV_A_ w, EV_STAT);
2829 } 4282 }
2830} 4283}
2831 4284
2832void 4285void
2833ev_stat_start (EV_P_ ev_stat *w) 4286ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2834{ 4287{
2835 if (expect_false (ev_is_active (w))) 4288 if (expect_false (ev_is_active (w)))
2836 return; 4289 return;
2837 4290
2838 ev_stat_stat (EV_A_ w); 4291 ev_stat_stat (EV_A_ w);
… …
2848 4301
2849 if (fs_fd >= 0) 4302 if (fs_fd >= 0)
2850 infy_add (EV_A_ w); 4303 infy_add (EV_A_ w);
2851 else 4304 else
2852#endif 4305#endif
4306 {
2853 ev_timer_again (EV_A_ &w->timer); 4307 ev_timer_again (EV_A_ &w->timer);
4308 ev_unref (EV_A);
4309 }
2854 4310
2855 ev_start (EV_A_ (W)w, 1); 4311 ev_start (EV_A_ (W)w, 1);
2856 4312
2857 EV_FREQUENT_CHECK; 4313 EV_FREQUENT_CHECK;
2858} 4314}
2859 4315
2860void 4316void
2861ev_stat_stop (EV_P_ ev_stat *w) 4317ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2862{ 4318{
2863 clear_pending (EV_A_ (W)w); 4319 clear_pending (EV_A_ (W)w);
2864 if (expect_false (!ev_is_active (w))) 4320 if (expect_false (!ev_is_active (w)))
2865 return; 4321 return;
2866 4322
2867 EV_FREQUENT_CHECK; 4323 EV_FREQUENT_CHECK;
2868 4324
2869#if EV_USE_INOTIFY 4325#if EV_USE_INOTIFY
2870 infy_del (EV_A_ w); 4326 infy_del (EV_A_ w);
2871#endif 4327#endif
4328
4329 if (ev_is_active (&w->timer))
4330 {
4331 ev_ref (EV_A);
2872 ev_timer_stop (EV_A_ &w->timer); 4332 ev_timer_stop (EV_A_ &w->timer);
4333 }
2873 4334
2874 ev_stop (EV_A_ (W)w); 4335 ev_stop (EV_A_ (W)w);
2875 4336
2876 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
2877} 4338}
2878#endif 4339#endif
2879 4340
2880#if EV_IDLE_ENABLE 4341#if EV_IDLE_ENABLE
2881void 4342void
2882ev_idle_start (EV_P_ ev_idle *w) 4343ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2883{ 4344{
2884 if (expect_false (ev_is_active (w))) 4345 if (expect_false (ev_is_active (w)))
2885 return; 4346 return;
2886 4347
2887 pri_adjust (EV_A_ (W)w); 4348 pri_adjust (EV_A_ (W)w);
… …
2900 4361
2901 EV_FREQUENT_CHECK; 4362 EV_FREQUENT_CHECK;
2902} 4363}
2903 4364
2904void 4365void
2905ev_idle_stop (EV_P_ ev_idle *w) 4366ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2906{ 4367{
2907 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
2908 if (expect_false (!ev_is_active (w))) 4369 if (expect_false (!ev_is_active (w)))
2909 return; 4370 return;
2910 4371
… …
2922 4383
2923 EV_FREQUENT_CHECK; 4384 EV_FREQUENT_CHECK;
2924} 4385}
2925#endif 4386#endif
2926 4387
4388#if EV_PREPARE_ENABLE
2927void 4389void
2928ev_prepare_start (EV_P_ ev_prepare *w) 4390ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2929{ 4391{
2930 if (expect_false (ev_is_active (w))) 4392 if (expect_false (ev_is_active (w)))
2931 return; 4393 return;
2932 4394
2933 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
… …
2938 4400
2939 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
2940} 4402}
2941 4403
2942void 4404void
2943ev_prepare_stop (EV_P_ ev_prepare *w) 4405ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2944{ 4406{
2945 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
2946 if (expect_false (!ev_is_active (w))) 4408 if (expect_false (!ev_is_active (w)))
2947 return; 4409 return;
2948 4410
… …
2957 4419
2958 ev_stop (EV_A_ (W)w); 4420 ev_stop (EV_A_ (W)w);
2959 4421
2960 EV_FREQUENT_CHECK; 4422 EV_FREQUENT_CHECK;
2961} 4423}
4424#endif
2962 4425
4426#if EV_CHECK_ENABLE
2963void 4427void
2964ev_check_start (EV_P_ ev_check *w) 4428ev_check_start (EV_P_ ev_check *w) EV_THROW
2965{ 4429{
2966 if (expect_false (ev_is_active (w))) 4430 if (expect_false (ev_is_active (w)))
2967 return; 4431 return;
2968 4432
2969 EV_FREQUENT_CHECK; 4433 EV_FREQUENT_CHECK;
… …
2974 4438
2975 EV_FREQUENT_CHECK; 4439 EV_FREQUENT_CHECK;
2976} 4440}
2977 4441
2978void 4442void
2979ev_check_stop (EV_P_ ev_check *w) 4443ev_check_stop (EV_P_ ev_check *w) EV_THROW
2980{ 4444{
2981 clear_pending (EV_A_ (W)w); 4445 clear_pending (EV_A_ (W)w);
2982 if (expect_false (!ev_is_active (w))) 4446 if (expect_false (!ev_is_active (w)))
2983 return; 4447 return;
2984 4448
… …
2993 4457
2994 ev_stop (EV_A_ (W)w); 4458 ev_stop (EV_A_ (W)w);
2995 4459
2996 EV_FREQUENT_CHECK; 4460 EV_FREQUENT_CHECK;
2997} 4461}
4462#endif
2998 4463
2999#if EV_EMBED_ENABLE 4464#if EV_EMBED_ENABLE
3000void noinline 4465void noinline
3001ev_embed_sweep (EV_P_ ev_embed *w) 4466ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3002{ 4467{
3003 ev_loop (w->other, EVLOOP_NONBLOCK); 4468 ev_run (w->other, EVRUN_NOWAIT);
3004} 4469}
3005 4470
3006static void 4471static void
3007embed_io_cb (EV_P_ ev_io *io, int revents) 4472embed_io_cb (EV_P_ ev_io *io, int revents)
3008{ 4473{
3009 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4474 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3010 4475
3011 if (ev_cb (w)) 4476 if (ev_cb (w))
3012 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4477 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3013 else 4478 else
3014 ev_loop (w->other, EVLOOP_NONBLOCK); 4479 ev_run (w->other, EVRUN_NOWAIT);
3015} 4480}
3016 4481
3017static void 4482static void
3018embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4483embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3019{ 4484{
3020 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4485 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3021 4486
3022 { 4487 {
3023 struct ev_loop *loop = w->other; 4488 EV_P = w->other;
3024 4489
3025 while (fdchangecnt) 4490 while (fdchangecnt)
3026 { 4491 {
3027 fd_reify (EV_A); 4492 fd_reify (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4493 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 4494 }
3030 } 4495 }
3031} 4496}
3032 4497
3033static void 4498static void
… …
3036 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));
3037 4502
3038 ev_embed_stop (EV_A_ w); 4503 ev_embed_stop (EV_A_ w);
3039 4504
3040 { 4505 {
3041 struct ev_loop *loop = w->other; 4506 EV_P = w->other;
3042 4507
3043 ev_loop_fork (EV_A); 4508 ev_loop_fork (EV_A);
3044 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4509 ev_run (EV_A_ EVRUN_NOWAIT);
3045 } 4510 }
3046 4511
3047 ev_embed_start (EV_A_ w); 4512 ev_embed_start (EV_A_ w);
3048} 4513}
3049 4514
… …
3054 ev_idle_stop (EV_A_ idle); 4519 ev_idle_stop (EV_A_ idle);
3055} 4520}
3056#endif 4521#endif
3057 4522
3058void 4523void
3059ev_embed_start (EV_P_ ev_embed *w) 4524ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3060{ 4525{
3061 if (expect_false (ev_is_active (w))) 4526 if (expect_false (ev_is_active (w)))
3062 return; 4527 return;
3063 4528
3064 { 4529 {
3065 struct ev_loop *loop = w->other; 4530 EV_P = w->other;
3066 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 ()));
3067 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);
3068 } 4533 }
3069 4534
3070 EV_FREQUENT_CHECK; 4535 EV_FREQUENT_CHECK;
… …
3085 4550
3086 EV_FREQUENT_CHECK; 4551 EV_FREQUENT_CHECK;
3087} 4552}
3088 4553
3089void 4554void
3090ev_embed_stop (EV_P_ ev_embed *w) 4555ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3091{ 4556{
3092 clear_pending (EV_A_ (W)w); 4557 clear_pending (EV_A_ (W)w);
3093 if (expect_false (!ev_is_active (w))) 4558 if (expect_false (!ev_is_active (w)))
3094 return; 4559 return;
3095 4560
… …
3097 4562
3098 ev_io_stop (EV_A_ &w->io); 4563 ev_io_stop (EV_A_ &w->io);
3099 ev_prepare_stop (EV_A_ &w->prepare); 4564 ev_prepare_stop (EV_A_ &w->prepare);
3100 ev_fork_stop (EV_A_ &w->fork); 4565 ev_fork_stop (EV_A_ &w->fork);
3101 4566
4567 ev_stop (EV_A_ (W)w);
4568
3102 EV_FREQUENT_CHECK; 4569 EV_FREQUENT_CHECK;
3103} 4570}
3104#endif 4571#endif
3105 4572
3106#if EV_FORK_ENABLE 4573#if EV_FORK_ENABLE
3107void 4574void
3108ev_fork_start (EV_P_ ev_fork *w) 4575ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3109{ 4576{
3110 if (expect_false (ev_is_active (w))) 4577 if (expect_false (ev_is_active (w)))
3111 return; 4578 return;
3112 4579
3113 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
… …
3118 4585
3119 EV_FREQUENT_CHECK; 4586 EV_FREQUENT_CHECK;
3120} 4587}
3121 4588
3122void 4589void
3123ev_fork_stop (EV_P_ ev_fork *w) 4590ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3124{ 4591{
3125 clear_pending (EV_A_ (W)w); 4592 clear_pending (EV_A_ (W)w);
3126 if (expect_false (!ev_is_active (w))) 4593 if (expect_false (!ev_is_active (w)))
3127 return; 4594 return;
3128 4595
… …
3139 4606
3140 EV_FREQUENT_CHECK; 4607 EV_FREQUENT_CHECK;
3141} 4608}
3142#endif 4609#endif
3143 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
3144#if EV_ASYNC_ENABLE 4652#if EV_ASYNC_ENABLE
3145void 4653void
3146ev_async_start (EV_P_ ev_async *w) 4654ev_async_start (EV_P_ ev_async *w) EV_THROW
3147{ 4655{
3148 if (expect_false (ev_is_active (w))) 4656 if (expect_false (ev_is_active (w)))
3149 return; 4657 return;
4658
4659 w->sent = 0;
3150 4660
3151 evpipe_init (EV_A); 4661 evpipe_init (EV_A);
3152 4662
3153 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
3154 4664
… …
3158 4668
3159 EV_FREQUENT_CHECK; 4669 EV_FREQUENT_CHECK;
3160} 4670}
3161 4671
3162void 4672void
3163ev_async_stop (EV_P_ ev_async *w) 4673ev_async_stop (EV_P_ ev_async *w) EV_THROW
3164{ 4674{
3165 clear_pending (EV_A_ (W)w); 4675 clear_pending (EV_A_ (W)w);
3166 if (expect_false (!ev_is_active (w))) 4676 if (expect_false (!ev_is_active (w)))
3167 return; 4677 return;
3168 4678
… …
3179 4689
3180 EV_FREQUENT_CHECK; 4690 EV_FREQUENT_CHECK;
3181} 4691}
3182 4692
3183void 4693void
3184ev_async_send (EV_P_ ev_async *w) 4694ev_async_send (EV_P_ ev_async *w) EV_THROW
3185{ 4695{
3186 w->sent = 1; 4696 w->sent = 1;
3187 evpipe_write (EV_A_ &gotasync); 4697 evpipe_write (EV_A_ &async_pending);
3188} 4698}
3189#endif 4699#endif
3190 4700
3191/*****************************************************************************/ 4701/*****************************************************************************/
3192 4702
… …
3226 4736
3227 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));
3228} 4738}
3229 4739
3230void 4740void
3231ev_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
3232{ 4742{
3233 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));
3234 4744
3235 if (expect_false (!once)) 4745 if (expect_false (!once))
3236 { 4746 {
3237 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4747 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3238 return; 4748 return;
3239 } 4749 }
3240 4750
3241 once->cb = cb; 4751 once->cb = cb;
3242 once->arg = arg; 4752 once->arg = arg;
… …
3257} 4767}
3258 4768
3259/*****************************************************************************/ 4769/*****************************************************************************/
3260 4770
3261#if EV_WALK_ENABLE 4771#if EV_WALK_ENABLE
3262void 4772void ecb_cold
3263ev_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
3264{ 4774{
3265 int i, j; 4775 int i, j;
3266 ev_watcher_list *wl, *wn; 4776 ev_watcher_list *wl, *wn;
3267 4777
3268 if (types & (EV_IO | EV_EMBED)) 4778 if (types & (EV_IO | EV_EMBED))
… …
3311 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4821 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3312#endif 4822#endif
3313 4823
3314#if EV_IDLE_ENABLE 4824#if EV_IDLE_ENABLE
3315 if (types & EV_IDLE) 4825 if (types & EV_IDLE)
3316 for (j = NUMPRI; i--; ) 4826 for (j = NUMPRI; j--; )
3317 for (i = idlecnt [j]; i--; ) 4827 for (i = idlecnt [j]; i--; )
3318 cb (EV_A_ EV_IDLE, idles [j][i]); 4828 cb (EV_A_ EV_IDLE, idles [j][i]);
3319#endif 4829#endif
3320 4830
3321#if EV_FORK_ENABLE 4831#if EV_FORK_ENABLE
… …
3329 if (types & EV_ASYNC) 4839 if (types & EV_ASYNC)
3330 for (i = asynccnt; i--; ) 4840 for (i = asynccnt; i--; )
3331 cb (EV_A_ EV_ASYNC, asyncs [i]); 4841 cb (EV_A_ EV_ASYNC, asyncs [i]);
3332#endif 4842#endif
3333 4843
4844#if EV_PREPARE_ENABLE
3334 if (types & EV_PREPARE) 4845 if (types & EV_PREPARE)
3335 for (i = preparecnt; i--; ) 4846 for (i = preparecnt; i--; )
3336#if EV_EMBED_ENABLE 4847# if EV_EMBED_ENABLE
3337 if (ev_cb (prepares [i]) != embed_prepare_cb) 4848 if (ev_cb (prepares [i]) != embed_prepare_cb)
3338#endif 4849# endif
3339 cb (EV_A_ EV_PREPARE, prepares [i]); 4850 cb (EV_A_ EV_PREPARE, prepares [i]);
4851#endif
3340 4852
4853#if EV_CHECK_ENABLE
3341 if (types & EV_CHECK) 4854 if (types & EV_CHECK)
3342 for (i = checkcnt; i--; ) 4855 for (i = checkcnt; i--; )
3343 cb (EV_A_ EV_CHECK, checks [i]); 4856 cb (EV_A_ EV_CHECK, checks [i]);
4857#endif
3344 4858
4859#if EV_SIGNAL_ENABLE
3345 if (types & EV_SIGNAL) 4860 if (types & EV_SIGNAL)
3346 for (i = 0; i < signalmax; ++i) 4861 for (i = 0; i < EV_NSIG - 1; ++i)
3347 for (wl = signals [i].head; wl; ) 4862 for (wl = signals [i].head; wl; )
3348 { 4863 {
3349 wn = wl->next; 4864 wn = wl->next;
3350 cb (EV_A_ EV_SIGNAL, wl); 4865 cb (EV_A_ EV_SIGNAL, wl);
3351 wl = wn; 4866 wl = wn;
3352 } 4867 }
4868#endif
3353 4869
4870#if EV_CHILD_ENABLE
3354 if (types & EV_CHILD) 4871 if (types & EV_CHILD)
3355 for (i = EV_PID_HASHSIZE; i--; ) 4872 for (i = (EV_PID_HASHSIZE); i--; )
3356 for (wl = childs [i]; wl; ) 4873 for (wl = childs [i]; wl; )
3357 { 4874 {
3358 wn = wl->next; 4875 wn = wl->next;
3359 cb (EV_A_ EV_CHILD, wl); 4876 cb (EV_A_ EV_CHILD, wl);
3360 wl = wn; 4877 wl = wn;
3361 } 4878 }
4879#endif
3362/* EV_STAT 0x00001000 /* stat data changed */ 4880/* EV_STAT 0x00001000 /* stat data changed */
3363/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4881/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3364} 4882}
3365#endif 4883#endif
3366 4884
3367#if EV_MULTIPLICITY 4885#if EV_MULTIPLICITY
3368 #include "ev_wrap.h" 4886 #include "ev_wrap.h"
3369#endif 4887#endif
3370 4888
3371#ifdef __cplusplus
3372}
3373#endif
3374

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