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Comparing libev/ev.c (file contents):
Revision 1.299 by root, Tue Jul 14 00:09:59 2009 UTC vs.
Revision 1.485 by root, Mon Aug 13 10:01:19 2018 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> 167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
149#include <stdlib.h> 177#include <stdlib.h>
178#include <string.h>
150#include <fcntl.h> 179#include <fcntl.h>
151#include <stddef.h> 180#include <stddef.h>
152 181
153#include <stdio.h> 182#include <stdio.h>
154 183
155#include <assert.h> 184#include <assert.h>
156#include <errno.h> 185#include <errno.h>
157#include <sys/types.h> 186#include <sys/types.h>
158#include <time.h> 187#include <time.h>
188#include <limits.h>
159 189
160#include <signal.h> 190#include <signal.h>
161 191
162#ifdef EV_H 192#ifdef EV_H
163# include EV_H 193# include EV_H
164#else 194#else
165# include "ev.h" 195# include "ev.h"
196#endif
197
198#if EV_NO_THREADS
199# undef EV_NO_SMP
200# define EV_NO_SMP 1
201# undef ECB_NO_THREADS
202# define ECB_NO_THREADS 1
203#endif
204#if EV_NO_SMP
205# undef EV_NO_SMP
206# define ECB_NO_SMP 1
166#endif 207#endif
167 208
168#ifndef _WIN32 209#ifndef _WIN32
169# include <sys/time.h> 210# include <sys/time.h>
170# include <sys/wait.h> 211# include <sys/wait.h>
171# include <unistd.h> 212# include <unistd.h>
172#else 213#else
173# include <io.h> 214# include <io.h>
174# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
175# include <windows.h> 217# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
178# endif 220# endif
221# undef EV_AVOID_STDIO
179#endif 222#endif
180 223
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
182 225
226/* try to deduce the maximum number of signals on this platform */
227#if defined EV_NSIG
228/* use what's provided */
229#elif defined NSIG
230# define EV_NSIG (NSIG)
231#elif defined _NSIG
232# define EV_NSIG (_NSIG)
233#elif defined SIGMAX
234# define EV_NSIG (SIGMAX+1)
235#elif defined SIG_MAX
236# define EV_NSIG (SIG_MAX+1)
237#elif defined _SIG_MAX
238# define EV_NSIG (_SIG_MAX+1)
239#elif defined MAXSIG
240# define EV_NSIG (MAXSIG+1)
241#elif defined MAX_SIG
242# define EV_NSIG (MAX_SIG+1)
243#elif defined SIGARRAYSIZE
244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
245#elif defined _sys_nsig
246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
247#else
248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
254
183#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
185# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 258# else
187# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
188# endif 260# endif
189#endif 261#endif
190 262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
269# endif
270#endif
271
191#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 274# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 275# else
195# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
196# endif 277# endif
197#endif 278#endif
198 279
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 281# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 282#endif
202 283
203#ifndef EV_USE_NANOSLEEP 284#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 285# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 286# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 287# else
207# define EV_USE_NANOSLEEP 0 288# define EV_USE_NANOSLEEP 0
208# endif 289# endif
209#endif 290#endif
210 291
211#ifndef EV_USE_SELECT 292#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 293# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 294#endif
214 295
215#ifndef EV_USE_POLL 296#ifndef EV_USE_POLL
216# ifdef _WIN32 297# ifdef _WIN32
217# define EV_USE_POLL 0 298# define EV_USE_POLL 0
218# else 299# else
219# define EV_USE_POLL 1 300# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 301# endif
221#endif 302#endif
222 303
223#ifndef EV_USE_EPOLL 304#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 305# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 306# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 307# else
227# define EV_USE_EPOLL 0 308# define EV_USE_EPOLL 0
228# endif 309# endif
229#endif 310#endif
230 311
… …
236# define EV_USE_PORT 0 317# define EV_USE_PORT 0
237#endif 318#endif
238 319
239#ifndef EV_USE_INOTIFY 320#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 321# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 322# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 323# else
243# define EV_USE_INOTIFY 0 324# define EV_USE_INOTIFY 0
244# endif 325# endif
245#endif 326#endif
246 327
247#ifndef EV_PID_HASHSIZE 328#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 329# 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 330#endif
254 331
255#ifndef EV_INOTIFY_HASHSIZE 332#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 333# 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 334#endif
262 335
263#ifndef EV_USE_EVENTFD 336#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 338# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 339# else
267# define EV_USE_EVENTFD 0 340# define EV_USE_EVENTFD 0
341# endif
342#endif
343
344#ifndef EV_USE_SIGNALFD
345# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
346# define EV_USE_SIGNALFD EV_FEATURE_OS
347# else
348# define EV_USE_SIGNALFD 0
268# endif 349# endif
269#endif 350#endif
270 351
271#if 0 /* debugging */ 352#if 0 /* debugging */
272# define EV_VERIFY 3 353# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 354# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 355# define EV_HEAP_CACHE_AT 1
275#endif 356#endif
276 357
277#ifndef EV_VERIFY 358#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 359# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 360#endif
280 361
281#ifndef EV_USE_4HEAP 362#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 363# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 364#endif
284 365
285#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 367# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
368#endif
369
370#ifdef __ANDROID__
371/* supposedly, android doesn't typedef fd_mask */
372# undef EV_USE_SELECT
373# define EV_USE_SELECT 0
374/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
375# undef EV_USE_CLOCK_SYSCALL
376# define EV_USE_CLOCK_SYSCALL 0
377#endif
378
379/* aix's poll.h seems to cause lots of trouble */
380#ifdef _AIX
381/* AIX has a completely broken poll.h header */
382# undef EV_USE_POLL
383# define EV_USE_POLL 0
287#endif 384#endif
288 385
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 386/* 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. */ 387/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 389# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 390# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 391# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 393# define EV_USE_MONOTONIC 1
297# else 394# else
… …
316# undef EV_USE_INOTIFY 413# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 414# define EV_USE_INOTIFY 0
318#endif 415#endif
319 416
320#if !EV_USE_NANOSLEEP 417#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 418/* hp-ux has it in sys/time.h, which we unconditionally include above */
419# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 420# include <sys/select.h>
323# endif 421# endif
324#endif 422#endif
325 423
326#if EV_USE_INOTIFY 424#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 425# include <sys/statfs.h>
329# include <sys/inotify.h> 426# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 427/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 428# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 429# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 430# define EV_USE_INOTIFY 0
334# endif 431# endif
335#endif 432#endif
336 433
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 434#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 435/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 436# include <stdint.h>
344# ifdef __cplusplus 437# ifndef EFD_NONBLOCK
345extern "C" { 438# define EFD_NONBLOCK O_NONBLOCK
346# endif 439# endif
347int eventfd (unsigned int initval, int flags); 440# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 441# ifdef O_CLOEXEC
349} 442# define EFD_CLOEXEC O_CLOEXEC
443# else
444# define EFD_CLOEXEC 02000000
445# endif
350# endif 446# endif
447EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
448#endif
449
450#if EV_USE_SIGNALFD
451/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
452# include <stdint.h>
453# ifndef SFD_NONBLOCK
454# define SFD_NONBLOCK O_NONBLOCK
455# endif
456# ifndef SFD_CLOEXEC
457# ifdef O_CLOEXEC
458# define SFD_CLOEXEC O_CLOEXEC
459# else
460# define SFD_CLOEXEC 02000000
461# endif
462# endif
463EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
464
465struct signalfd_siginfo
466{
467 uint32_t ssi_signo;
468 char pad[128 - sizeof (uint32_t)];
469};
351#endif 470#endif
352 471
353/**/ 472/**/
354 473
355#if EV_VERIFY >= 3 474#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 475# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 476#else
358# define EV_FREQUENT_CHECK do { } while (0) 477# define EV_FREQUENT_CHECK do { } while (0)
359#endif 478#endif
360 479
361/* 480/*
362 * This is used to avoid floating point rounding problems. 481 * 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. 482 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 483 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 484#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
485/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 486
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 487#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) */ 488#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 */
374 489
490#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
491#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
492
493/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
494/* ECB.H BEGIN */
495/*
496 * libecb - http://software.schmorp.de/pkg/libecb
497 *
498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
499 * Copyright (©) 2011 Emanuele Giaquinta
500 * All rights reserved.
501 *
502 * Redistribution and use in source and binary forms, with or without modifica-
503 * tion, are permitted provided that the following conditions are met:
504 *
505 * 1. Redistributions of source code must retain the above copyright notice,
506 * this list of conditions and the following disclaimer.
507 *
508 * 2. Redistributions in binary form must reproduce the above copyright
509 * notice, this list of conditions and the following disclaimer in the
510 * documentation and/or other materials provided with the distribution.
511 *
512 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
513 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
514 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
515 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
516 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
517 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
519 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
520 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
521 * OF THE POSSIBILITY OF SUCH DAMAGE.
522 *
523 * Alternatively, the contents of this file may be used under the terms of
524 * the GNU General Public License ("GPL") version 2 or any later version,
525 * in which case the provisions of the GPL are applicable instead of
526 * the above. If you wish to allow the use of your version of this file
527 * only under the terms of the GPL and not to allow others to use your
528 * version of this file under the BSD license, indicate your decision
529 * by deleting the provisions above and replace them with the notice
530 * and other provisions required by the GPL. If you do not delete the
531 * provisions above, a recipient may use your version of this file under
532 * either the BSD or the GPL.
533 */
534
535#ifndef ECB_H
536#define ECB_H
537
538/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005
540
541#ifdef _WIN32
542 typedef signed char int8_t;
543 typedef unsigned char uint8_t;
544 typedef signed short int16_t;
545 typedef unsigned short uint16_t;
546 typedef signed int int32_t;
547 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 548 #if __GNUC__
549 typedef signed long long int64_t;
550 typedef unsigned long long uint64_t;
551 #else /* _MSC_VER || __BORLANDC__ */
552 typedef signed __int64 int64_t;
553 typedef unsigned __int64 uint64_t;
554 #endif
555 #ifdef _WIN64
556 #define ECB_PTRSIZE 8
557 typedef uint64_t uintptr_t;
558 typedef int64_t intptr_t;
559 #else
560 #define ECB_PTRSIZE 4
561 typedef uint32_t uintptr_t;
562 typedef int32_t intptr_t;
563 #endif
564#else
565 #include <inttypes.h>
566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
567 #define ECB_PTRSIZE 8
568 #else
569 #define ECB_PTRSIZE 4
570 #endif
571#endif
572
573#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
574#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
575
576/* work around x32 idiocy by defining proper macros */
577#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
578 #if _ILP32
579 #define ECB_AMD64_X32 1
580 #else
581 #define ECB_AMD64 1
582 #endif
583#endif
584
585/* many compilers define _GNUC_ to some versions but then only implement
586 * what their idiot authors think are the "more important" extensions,
587 * causing enormous grief in return for some better fake benchmark numbers.
588 * or so.
589 * we try to detect these and simply assume they are not gcc - if they have
590 * an issue with that they should have done it right in the first place.
591 */
592#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
593 #define ECB_GCC_VERSION(major,minor) 0
594#else
595 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
596#endif
597
598#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
599
600#if __clang__ && defined __has_builtin
601 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
602#else
603 #define ECB_CLANG_BUILTIN(x) 0
604#endif
605
606#if __clang__ && defined __has_extension
607 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
608#else
609 #define ECB_CLANG_EXTENSION(x) 0
610#endif
611
612#define ECB_CPP (__cplusplus+0)
613#define ECB_CPP11 (__cplusplus >= 201103L)
614
615#if ECB_CPP
616 #define ECB_C 0
617 #define ECB_STDC_VERSION 0
618#else
619 #define ECB_C 1
620 #define ECB_STDC_VERSION __STDC_VERSION__
621#endif
622
623#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
624#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
625
626#if ECB_CPP
627 #define ECB_EXTERN_C extern "C"
628 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
629 #define ECB_EXTERN_C_END }
630#else
631 #define ECB_EXTERN_C extern
632 #define ECB_EXTERN_C_BEG
633 #define ECB_EXTERN_C_END
634#endif
635
636/*****************************************************************************/
637
638/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
639/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
640
641#if ECB_NO_THREADS
642 #define ECB_NO_SMP 1
643#endif
644
645#if ECB_NO_SMP
646 #define ECB_MEMORY_FENCE do { } while (0)
647#endif
648
649/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
650#if __xlC__ && ECB_CPP
651 #include <builtins.h>
652#endif
653
654#if 1400 <= _MSC_VER
655 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #if __i386 || __i386__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
664 #elif ECB_GCC_AMD64
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
670 #elif defined __ARM_ARCH_2__ \
671 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
672 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
673 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
674 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
675 || defined __ARM_ARCH_5TEJ__
676 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
677 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
678 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
679 || defined __ARM_ARCH_6T2__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
681 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
682 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
684 #elif __aarch64__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
686 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
688 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
689 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
690 #elif defined __s390__ || defined __s390x__
691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
692 #elif defined __mips__
693 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
694 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
696 #elif defined __alpha__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
698 #elif defined __hppa__
699 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
701 #elif defined __ia64__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
703 #elif defined __m68k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
705 #elif defined __m88k__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
707 #elif defined __sh__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
709 #endif
710 #endif
711#endif
712
713#ifndef ECB_MEMORY_FENCE
714 #if ECB_GCC_VERSION(4,7)
715 /* see comment below (stdatomic.h) about the C11 memory model. */
716 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
717 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
718 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
719
720 #elif ECB_CLANG_EXTENSION(c_atomic)
721 /* see comment below (stdatomic.h) about the C11 memory model. */
722 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
723 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
724 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
725
726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
727 #define ECB_MEMORY_FENCE __sync_synchronize ()
728 #elif _MSC_VER >= 1500 /* VC++ 2008 */
729 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
730 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
731 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
732 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
733 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
734 #elif _MSC_VER >= 1400 /* VC++ 2005 */
735 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
736 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
737 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
738 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
739 #elif defined _WIN32
740 #include <WinNT.h>
741 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
742 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
743 #include <mbarrier.h>
744 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
745 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
746 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
747 #elif __xlC__
748 #define ECB_MEMORY_FENCE __sync ()
749 #endif
750#endif
751
752#ifndef ECB_MEMORY_FENCE
753 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
754 /* we assume that these memory fences work on all variables/all memory accesses, */
755 /* not just C11 atomics and atomic accesses */
756 #include <stdatomic.h>
757 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
758 /* any fence other than seq_cst, which isn't very efficient for us. */
759 /* Why that is, we don't know - either the C11 memory model is quite useless */
760 /* for most usages, or gcc and clang have a bug */
761 /* I *currently* lean towards the latter, and inefficiently implement */
762 /* all three of ecb's fences as a seq_cst fence */
763 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
764 /* for all __atomic_thread_fence's except seq_cst */
765 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
766 #endif
767#endif
768
769#ifndef ECB_MEMORY_FENCE
770 #if !ECB_AVOID_PTHREADS
771 /*
772 * if you get undefined symbol references to pthread_mutex_lock,
773 * or failure to find pthread.h, then you should implement
774 * the ECB_MEMORY_FENCE operations for your cpu/compiler
775 * OR provide pthread.h and link against the posix thread library
776 * of your system.
777 */
778 #include <pthread.h>
779 #define ECB_NEEDS_PTHREADS 1
780 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
781
782 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
783 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
784 #endif
785#endif
786
787#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
788 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
789#endif
790
791#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
792 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
793#endif
794
795/*****************************************************************************/
796
797#if ECB_CPP
798 #define ecb_inline static inline
799#elif ECB_GCC_VERSION(2,5)
800 #define ecb_inline static __inline__
801#elif ECB_C99
802 #define ecb_inline static inline
803#else
804 #define ecb_inline static
805#endif
806
807#if ECB_GCC_VERSION(3,3)
808 #define ecb_restrict __restrict__
809#elif ECB_C99
810 #define ecb_restrict restrict
811#else
812 #define ecb_restrict
813#endif
814
815typedef int ecb_bool;
816
817#define ECB_CONCAT_(a, b) a ## b
818#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
819#define ECB_STRINGIFY_(a) # a
820#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
821#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
822
823#define ecb_function_ ecb_inline
824
825#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
826 #define ecb_attribute(attrlist) __attribute__ (attrlist)
827#else
828 #define ecb_attribute(attrlist)
829#endif
830
831#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
832 #define ecb_is_constant(expr) __builtin_constant_p (expr)
833#else
834 /* possible C11 impl for integral types
835 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
836 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
837
838 #define ecb_is_constant(expr) 0
839#endif
840
841#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
376# define expect(expr,value) __builtin_expect ((expr),(value)) 842 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
377# define noinline __attribute__ ((noinline))
378#else 843#else
379# define expect(expr,value) (expr) 844 #define ecb_expect(expr,value) (expr)
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif 845#endif
384#endif
385 846
847#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
848 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
849#else
850 #define ecb_prefetch(addr,rw,locality)
851#endif
852
853/* no emulation for ecb_decltype */
854#if ECB_CPP11
855 // older implementations might have problems with decltype(x)::type, work around it
856 template<class T> struct ecb_decltype_t { typedef T type; };
857 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
858#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
859 #define ecb_decltype(x) __typeof__ (x)
860#endif
861
862#if _MSC_VER >= 1300
863 #define ecb_deprecated __declspec (deprecated)
864#else
865 #define ecb_deprecated ecb_attribute ((__deprecated__))
866#endif
867
868#if _MSC_VER >= 1500
869 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
870#elif ECB_GCC_VERSION(4,5)
871 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
872#else
873 #define ecb_deprecated_message(msg) ecb_deprecated
874#endif
875
876#if _MSC_VER >= 1400
877 #define ecb_noinline __declspec (noinline)
878#else
879 #define ecb_noinline ecb_attribute ((__noinline__))
880#endif
881
882#define ecb_unused ecb_attribute ((__unused__))
883#define ecb_const ecb_attribute ((__const__))
884#define ecb_pure ecb_attribute ((__pure__))
885
886#if ECB_C11 || __IBMC_NORETURN
887 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
888 #define ecb_noreturn _Noreturn
889#elif ECB_CPP11
890 #define ecb_noreturn [[noreturn]]
891#elif _MSC_VER >= 1200
892 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
893 #define ecb_noreturn __declspec (noreturn)
894#else
895 #define ecb_noreturn ecb_attribute ((__noreturn__))
896#endif
897
898#if ECB_GCC_VERSION(4,3)
899 #define ecb_artificial ecb_attribute ((__artificial__))
900 #define ecb_hot ecb_attribute ((__hot__))
901 #define ecb_cold ecb_attribute ((__cold__))
902#else
903 #define ecb_artificial
904 #define ecb_hot
905 #define ecb_cold
906#endif
907
908/* put around conditional expressions if you are very sure that the */
909/* expression is mostly true or mostly false. note that these return */
910/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 911#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 912#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
913/* for compatibility to the rest of the world */
914#define ecb_likely(expr) ecb_expect_true (expr)
915#define ecb_unlikely(expr) ecb_expect_false (expr)
916
917/* count trailing zero bits and count # of one bits */
918#if ECB_GCC_VERSION(3,4) \
919 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
920 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
921 && ECB_CLANG_BUILTIN(__builtin_popcount))
922 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
923 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
924 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
925 #define ecb_ctz32(x) __builtin_ctz (x)
926 #define ecb_ctz64(x) __builtin_ctzll (x)
927 #define ecb_popcount32(x) __builtin_popcount (x)
928 /* no popcountll */
929#else
930 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
931 ecb_function_ ecb_const int
932 ecb_ctz32 (uint32_t x)
933 {
934#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
935 unsigned long r;
936 _BitScanForward (&r, x);
937 return (int)r;
938#else
939 int r = 0;
940
941 x &= ~x + 1; /* this isolates the lowest bit */
942
943#if ECB_branchless_on_i386
944 r += !!(x & 0xaaaaaaaa) << 0;
945 r += !!(x & 0xcccccccc) << 1;
946 r += !!(x & 0xf0f0f0f0) << 2;
947 r += !!(x & 0xff00ff00) << 3;
948 r += !!(x & 0xffff0000) << 4;
949#else
950 if (x & 0xaaaaaaaa) r += 1;
951 if (x & 0xcccccccc) r += 2;
952 if (x & 0xf0f0f0f0) r += 4;
953 if (x & 0xff00ff00) r += 8;
954 if (x & 0xffff0000) r += 16;
955#endif
956
957 return r;
958#endif
959 }
960
961 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
962 ecb_function_ ecb_const int
963 ecb_ctz64 (uint64_t x)
964 {
965#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
966 unsigned long r;
967 _BitScanForward64 (&r, x);
968 return (int)r;
969#else
970 int shift = x & 0xffffffff ? 0 : 32;
971 return ecb_ctz32 (x >> shift) + shift;
972#endif
973 }
974
975 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
976 ecb_function_ ecb_const int
977 ecb_popcount32 (uint32_t x)
978 {
979 x -= (x >> 1) & 0x55555555;
980 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
981 x = ((x >> 4) + x) & 0x0f0f0f0f;
982 x *= 0x01010101;
983
984 return x >> 24;
985 }
986
987 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
988 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
989 {
990#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
991 unsigned long r;
992 _BitScanReverse (&r, x);
993 return (int)r;
994#else
995 int r = 0;
996
997 if (x >> 16) { x >>= 16; r += 16; }
998 if (x >> 8) { x >>= 8; r += 8; }
999 if (x >> 4) { x >>= 4; r += 4; }
1000 if (x >> 2) { x >>= 2; r += 2; }
1001 if (x >> 1) { r += 1; }
1002
1003 return r;
1004#endif
1005 }
1006
1007 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1008 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1009 {
1010#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1011 unsigned long r;
1012 _BitScanReverse64 (&r, x);
1013 return (int)r;
1014#else
1015 int r = 0;
1016
1017 if (x >> 32) { x >>= 32; r += 32; }
1018
1019 return r + ecb_ld32 (x);
1020#endif
1021 }
1022#endif
1023
1024ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1026ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1027ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1028
1029ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1030ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1031{
1032 return ( (x * 0x0802U & 0x22110U)
1033 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1034}
1035
1036ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1037ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1038{
1039 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1040 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1041 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1042 x = ( x >> 8 ) | ( x << 8);
1043
1044 return x;
1045}
1046
1047ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1048ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1049{
1050 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1051 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1052 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1053 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1054 x = ( x >> 16 ) | ( x << 16);
1055
1056 return x;
1057}
1058
1059/* popcount64 is only available on 64 bit cpus as gcc builtin */
1060/* so for this version we are lazy */
1061ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1062ecb_function_ ecb_const int
1063ecb_popcount64 (uint64_t x)
1064{
1065 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1066}
1067
1068ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1069ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1070ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1071ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1072ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1073ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1074ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1075ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1076
1077ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1078ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1079ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1080ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1081ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1082ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1083ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1084ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1085
1086#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1087 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1088 #define ecb_bswap16(x) __builtin_bswap16 (x)
1089 #else
1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1091 #endif
1092 #define ecb_bswap32(x) __builtin_bswap32 (x)
1093 #define ecb_bswap64(x) __builtin_bswap64 (x)
1094#elif _MSC_VER
1095 #include <stdlib.h>
1096 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1097 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1098 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1099#else
1100 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1101 ecb_function_ ecb_const uint16_t
1102 ecb_bswap16 (uint16_t x)
1103 {
1104 return ecb_rotl16 (x, 8);
1105 }
1106
1107 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1108 ecb_function_ ecb_const uint32_t
1109 ecb_bswap32 (uint32_t x)
1110 {
1111 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1112 }
1113
1114 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1115 ecb_function_ ecb_const uint64_t
1116 ecb_bswap64 (uint64_t x)
1117 {
1118 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1119 }
1120#endif
1121
1122#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1123 #define ecb_unreachable() __builtin_unreachable ()
1124#else
1125 /* this seems to work fine, but gcc always emits a warning for it :/ */
1126 ecb_inline ecb_noreturn void ecb_unreachable (void);
1127 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1128#endif
1129
1130/* try to tell the compiler that some condition is definitely true */
1131#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1132
1133ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1134ecb_inline ecb_const uint32_t
1135ecb_byteorder_helper (void)
1136{
1137 /* the union code still generates code under pressure in gcc, */
1138 /* but less than using pointers, and always seems to */
1139 /* successfully return a constant. */
1140 /* the reason why we have this horrible preprocessor mess */
1141 /* is to avoid it in all cases, at least on common architectures */
1142 /* or when using a recent enough gcc version (>= 4.6) */
1143#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1144 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1145 #define ECB_LITTLE_ENDIAN 1
1146 return 0x44332211;
1147#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1148 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1149 #define ECB_BIG_ENDIAN 1
1150 return 0x11223344;
1151#else
1152 union
1153 {
1154 uint8_t c[4];
1155 uint32_t u;
1156 } u = { 0x11, 0x22, 0x33, 0x44 };
1157 return u.u;
1158#endif
1159}
1160
1161ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1162ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1163ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1164ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1165
1166#if ECB_GCC_VERSION(3,0) || ECB_C99
1167 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1168#else
1169 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1170#endif
1171
1172#if ECB_CPP
1173 template<typename T>
1174 static inline T ecb_div_rd (T val, T div)
1175 {
1176 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1177 }
1178 template<typename T>
1179 static inline T ecb_div_ru (T val, T div)
1180 {
1181 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1182 }
1183#else
1184 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1185 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1186#endif
1187
1188#if ecb_cplusplus_does_not_suck
1189 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1190 template<typename T, int N>
1191 static inline int ecb_array_length (const T (&arr)[N])
1192 {
1193 return N;
1194 }
1195#else
1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1197#endif
1198
1199ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1200ecb_function_ ecb_const uint32_t
1201ecb_binary16_to_binary32 (uint32_t x)
1202{
1203 unsigned int s = (x & 0x8000) << (31 - 15);
1204 int e = (x >> 10) & 0x001f;
1205 unsigned int m = x & 0x03ff;
1206
1207 if (ecb_expect_false (e == 31))
1208 /* infinity or NaN */
1209 e = 255 - (127 - 15);
1210 else if (ecb_expect_false (!e))
1211 {
1212 if (ecb_expect_true (!m))
1213 /* zero, handled by code below by forcing e to 0 */
1214 e = 0 - (127 - 15);
1215 else
1216 {
1217 /* subnormal, renormalise */
1218 unsigned int s = 10 - ecb_ld32 (m);
1219
1220 m = (m << s) & 0x3ff; /* mask implicit bit */
1221 e -= s - 1;
1222 }
1223 }
1224
1225 /* e and m now are normalised, or zero, (or inf or nan) */
1226 e += 127 - 15;
1227
1228 return s | (e << 23) | (m << (23 - 10));
1229}
1230
1231ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1232ecb_function_ ecb_const uint16_t
1233ecb_binary32_to_binary16 (uint32_t x)
1234{
1235 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1236 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1237 unsigned int m = x & 0x007fffff;
1238
1239 x &= 0x7fffffff;
1240
1241 /* if it's within range of binary16 normals, use fast path */
1242 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1243 {
1244 /* mantissa round-to-even */
1245 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1246
1247 /* handle overflow */
1248 if (ecb_expect_false (m >= 0x00800000))
1249 {
1250 m >>= 1;
1251 e += 1;
1252 }
1253
1254 return s | (e << 10) | (m >> (23 - 10));
1255 }
1256
1257 /* handle large numbers and infinity */
1258 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1259 return s | 0x7c00;
1260
1261 /* handle zero, subnormals and small numbers */
1262 if (ecb_expect_true (x < 0x38800000))
1263 {
1264 /* zero */
1265 if (ecb_expect_true (!x))
1266 return s;
1267
1268 /* handle subnormals */
1269
1270 /* too small, will be zero */
1271 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1272 return s;
1273
1274 m |= 0x00800000; /* make implicit bit explicit */
1275
1276 /* very tricky - we need to round to the nearest e (+10) bit value */
1277 {
1278 unsigned int bits = 14 - e;
1279 unsigned int half = (1 << (bits - 1)) - 1;
1280 unsigned int even = (m >> bits) & 1;
1281
1282 /* if this overflows, we will end up with a normalised number */
1283 m = (m + half + even) >> bits;
1284 }
1285
1286 return s | m;
1287 }
1288
1289 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1290 m >>= 13;
1291
1292 return s | 0x7c00 | m | !m;
1293}
1294
1295/*******************************************************************************/
1296/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1297
1298/* basically, everything uses "ieee pure-endian" floating point numbers */
1299/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1300#if 0 \
1301 || __i386 || __i386__ \
1302 || ECB_GCC_AMD64 \
1303 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1304 || defined __s390__ || defined __s390x__ \
1305 || defined __mips__ \
1306 || defined __alpha__ \
1307 || defined __hppa__ \
1308 || defined __ia64__ \
1309 || defined __m68k__ \
1310 || defined __m88k__ \
1311 || defined __sh__ \
1312 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1313 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1314 || defined __aarch64__
1315 #define ECB_STDFP 1
1316 #include <string.h> /* for memcpy */
1317#else
1318 #define ECB_STDFP 0
1319#endif
1320
1321#ifndef ECB_NO_LIBM
1322
1323 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1324
1325 /* only the oldest of old doesn't have this one. solaris. */
1326 #ifdef INFINITY
1327 #define ECB_INFINITY INFINITY
1328 #else
1329 #define ECB_INFINITY HUGE_VAL
1330 #endif
1331
1332 #ifdef NAN
1333 #define ECB_NAN NAN
1334 #else
1335 #define ECB_NAN ECB_INFINITY
1336 #endif
1337
1338 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1339 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1340 #define ecb_frexpf(x,e) frexpf ((x), (e))
1341 #else
1342 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1343 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1344 #endif
1345
1346 /* convert a float to ieee single/binary32 */
1347 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1348 ecb_function_ ecb_const uint32_t
1349 ecb_float_to_binary32 (float x)
1350 {
1351 uint32_t r;
1352
1353 #if ECB_STDFP
1354 memcpy (&r, &x, 4);
1355 #else
1356 /* slow emulation, works for anything but -0 */
1357 uint32_t m;
1358 int e;
1359
1360 if (x == 0e0f ) return 0x00000000U;
1361 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1362 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1363 if (x != x ) return 0x7fbfffffU;
1364
1365 m = ecb_frexpf (x, &e) * 0x1000000U;
1366
1367 r = m & 0x80000000U;
1368
1369 if (r)
1370 m = -m;
1371
1372 if (e <= -126)
1373 {
1374 m &= 0xffffffU;
1375 m >>= (-125 - e);
1376 e = -126;
1377 }
1378
1379 r |= (e + 126) << 23;
1380 r |= m & 0x7fffffU;
1381 #endif
1382
1383 return r;
1384 }
1385
1386 /* converts an ieee single/binary32 to a float */
1387 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1388 ecb_function_ ecb_const float
1389 ecb_binary32_to_float (uint32_t x)
1390 {
1391 float r;
1392
1393 #if ECB_STDFP
1394 memcpy (&r, &x, 4);
1395 #else
1396 /* emulation, only works for normals and subnormals and +0 */
1397 int neg = x >> 31;
1398 int e = (x >> 23) & 0xffU;
1399
1400 x &= 0x7fffffU;
1401
1402 if (e)
1403 x |= 0x800000U;
1404 else
1405 e = 1;
1406
1407 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1408 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1409
1410 r = neg ? -r : r;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* convert a double to ieee double/binary64 */
1417 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1418 ecb_function_ ecb_const uint64_t
1419 ecb_double_to_binary64 (double x)
1420 {
1421 uint64_t r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 8);
1425 #else
1426 /* slow emulation, works for anything but -0 */
1427 uint64_t m;
1428 int e;
1429
1430 if (x == 0e0 ) return 0x0000000000000000U;
1431 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1432 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1433 if (x != x ) return 0X7ff7ffffffffffffU;
1434
1435 m = frexp (x, &e) * 0x20000000000000U;
1436
1437 r = m & 0x8000000000000000;;
1438
1439 if (r)
1440 m = -m;
1441
1442 if (e <= -1022)
1443 {
1444 m &= 0x1fffffffffffffU;
1445 m >>= (-1021 - e);
1446 e = -1022;
1447 }
1448
1449 r |= ((uint64_t)(e + 1022)) << 52;
1450 r |= m & 0xfffffffffffffU;
1451 #endif
1452
1453 return r;
1454 }
1455
1456 /* converts an ieee double/binary64 to a double */
1457 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1458 ecb_function_ ecb_const double
1459 ecb_binary64_to_double (uint64_t x)
1460 {
1461 double r;
1462
1463 #if ECB_STDFP
1464 memcpy (&r, &x, 8);
1465 #else
1466 /* emulation, only works for normals and subnormals and +0 */
1467 int neg = x >> 63;
1468 int e = (x >> 52) & 0x7ffU;
1469
1470 x &= 0xfffffffffffffU;
1471
1472 if (e)
1473 x |= 0x10000000000000U;
1474 else
1475 e = 1;
1476
1477 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1478 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1479
1480 r = neg ? -r : r;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* convert a float to ieee half/binary16 */
1487 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1488 ecb_function_ ecb_const uint16_t
1489 ecb_float_to_binary16 (float x)
1490 {
1491 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1492 }
1493
1494 /* convert an ieee half/binary16 to float */
1495 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1496 ecb_function_ ecb_const float
1497 ecb_binary16_to_float (uint16_t x)
1498 {
1499 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1500 }
1501
1502#endif
1503
1504#endif
1505
1506/* ECB.H END */
1507
1508#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1509/* if your architecture doesn't need memory fences, e.g. because it is
1510 * single-cpu/core, or if you use libev in a project that doesn't use libev
1511 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1512 * libev, in which cases the memory fences become nops.
1513 * alternatively, you can remove this #error and link against libpthread,
1514 * which will then provide the memory fences.
1515 */
1516# error "memory fences not defined for your architecture, please report"
1517#endif
1518
1519#ifndef ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE do { } while (0)
1521# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1522# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1523#endif
1524
1525#define expect_false(cond) ecb_expect_false (cond)
1526#define expect_true(cond) ecb_expect_true (cond)
1527#define noinline ecb_noinline
1528
388#define inline_size static inline 1529#define inline_size ecb_inline
389 1530
390#if EV_MINIMAL 1531#if EV_FEATURE_CODE
391# define inline_speed static noinline
392#else
393# define inline_speed static inline 1532# define inline_speed ecb_inline
1533#else
1534# define inline_speed noinline static
394#endif 1535#endif
395 1536
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1538
398#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 1552#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1553#define ev_at(w) ((WT)(w))->at
413 1554
414#if EV_USE_REALTIME 1555#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1556/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 1557/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1558static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1559#endif
419 1560
420#if EV_USE_MONOTONIC 1561#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1562static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1563#endif
423 1564
1565#ifndef EV_FD_TO_WIN32_HANDLE
1566# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1567#endif
1568#ifndef EV_WIN32_HANDLE_TO_FD
1569# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1570#endif
1571#ifndef EV_WIN32_CLOSE_FD
1572# define EV_WIN32_CLOSE_FD(fd) close (fd)
1573#endif
1574
424#ifdef _WIN32 1575#ifdef _WIN32
425# include "ev_win32.c" 1576# include "ev_win32.c"
426#endif 1577#endif
427 1578
428/*****************************************************************************/ 1579/*****************************************************************************/
429 1580
1581/* define a suitable floor function (only used by periodics atm) */
1582
1583#if EV_USE_FLOOR
1584# include <math.h>
1585# define ev_floor(v) floor (v)
1586#else
1587
1588#include <float.h>
1589
1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
1592static ev_tstamp
1593ev_floor (ev_tstamp v)
1594{
1595 /* the choice of shift factor is not terribly important */
1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1598#else
1599 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1600#endif
1601
1602 /* argument too large for an unsigned long? */
1603 if (expect_false (v >= shift))
1604 {
1605 ev_tstamp f;
1606
1607 if (v == v - 1.)
1608 return v; /* very large number */
1609
1610 f = shift * ev_floor (v * (1. / shift));
1611 return f + ev_floor (v - f);
1612 }
1613
1614 /* special treatment for negative args? */
1615 if (expect_false (v < 0.))
1616 {
1617 ev_tstamp f = -ev_floor (-v);
1618
1619 return f - (f == v ? 0 : 1);
1620 }
1621
1622 /* fits into an unsigned long */
1623 return (unsigned long)v;
1624}
1625
1626#endif
1627
1628/*****************************************************************************/
1629
1630#ifdef __linux
1631# include <sys/utsname.h>
1632#endif
1633
1634noinline ecb_cold
1635static unsigned int
1636ev_linux_version (void)
1637{
1638#ifdef __linux
1639 unsigned int v = 0;
1640 struct utsname buf;
1641 int i;
1642 char *p = buf.release;
1643
1644 if (uname (&buf))
1645 return 0;
1646
1647 for (i = 3+1; --i; )
1648 {
1649 unsigned int c = 0;
1650
1651 for (;;)
1652 {
1653 if (*p >= '0' && *p <= '9')
1654 c = c * 10 + *p++ - '0';
1655 else
1656 {
1657 p += *p == '.';
1658 break;
1659 }
1660 }
1661
1662 v = (v << 8) | c;
1663 }
1664
1665 return v;
1666#else
1667 return 0;
1668#endif
1669}
1670
1671/*****************************************************************************/
1672
1673#if EV_AVOID_STDIO
1674noinline ecb_cold
1675static void
1676ev_printerr (const char *msg)
1677{
1678 write (STDERR_FILENO, msg, strlen (msg));
1679}
1680#endif
1681
430static void (*syserr_cb)(const char *msg); 1682static void (*syserr_cb)(const char *msg) EV_THROW;
431 1683
1684ecb_cold
432void 1685void
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
434{ 1687{
435 syserr_cb = cb; 1688 syserr_cb = cb;
436} 1689}
437 1690
438static void noinline 1691noinline ecb_cold
1692static void
439ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
440{ 1694{
441 if (!msg) 1695 if (!msg)
442 msg = "(libev) system error"; 1696 msg = "(libev) system error";
443 1697
444 if (syserr_cb) 1698 if (syserr_cb)
445 syserr_cb (msg); 1699 syserr_cb (msg);
446 else 1700 else
447 { 1701 {
1702#if EV_AVOID_STDIO
1703 ev_printerr (msg);
1704 ev_printerr (": ");
1705 ev_printerr (strerror (errno));
1706 ev_printerr ("\n");
1707#else
448 perror (msg); 1708 perror (msg);
1709#endif
449 abort (); 1710 abort ();
450 } 1711 }
451} 1712}
452 1713
453static void * 1714static void *
454ev_realloc_emul (void *ptr, long size) 1715ev_realloc_emul (void *ptr, long size) EV_THROW
455{ 1716{
456 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1718 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1719 * the single unix specification, so work around them here.
1720 * recently, also (at least) fedora and debian started breaking it,
1721 * despite documenting it otherwise.
459 */ 1722 */
460 1723
461 if (size) 1724 if (size)
462 return realloc (ptr, size); 1725 return realloc (ptr, size);
463 1726
464 free (ptr); 1727 free (ptr);
465 return 0; 1728 return 0;
466} 1729}
467 1730
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
469 1732
1733ecb_cold
470void 1734void
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
472{ 1736{
473 alloc = cb; 1737 alloc = cb;
474} 1738}
475 1739
476inline_speed void * 1740inline_speed void *
… …
478{ 1742{
479 ptr = alloc (ptr, size); 1743 ptr = alloc (ptr, size);
480 1744
481 if (!ptr && size) 1745 if (!ptr && size)
482 { 1746 {
1747#if EV_AVOID_STDIO
1748 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1749#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1750 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1751#endif
484 abort (); 1752 abort ();
485 } 1753 }
486 1754
487 return ptr; 1755 return ptr;
488} 1756}
… …
504 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1772 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
505 unsigned char unused; 1773 unsigned char unused;
506#if EV_USE_EPOLL 1774#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1775 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1776#endif
509#if EV_SELECT_IS_WINSOCKET 1777#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1778 SOCKET handle;
1779#endif
1780#if EV_USE_IOCP
1781 OVERLAPPED or, ow;
511#endif 1782#endif
512} ANFD; 1783} ANFD;
513 1784
514/* stores the pending event set for a given watcher */ 1785/* stores the pending event set for a given watcher */
515typedef struct 1786typedef struct
… …
557 #undef VAR 1828 #undef VAR
558 }; 1829 };
559 #include "ev_wrap.h" 1830 #include "ev_wrap.h"
560 1831
561 static struct ev_loop default_loop_struct; 1832 static struct ev_loop default_loop_struct;
562 struct ev_loop *ev_default_loop_ptr; 1833 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
563 1834
564#else 1835#else
565 1836
566 ev_tstamp ev_rt_now; 1837 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
567 #define VAR(name,decl) static decl; 1838 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1839 #include "ev_vars.h"
569 #undef VAR 1840 #undef VAR
570 1841
571 static int ev_default_loop_ptr; 1842 static int ev_default_loop_ptr;
572 1843
573#endif 1844#endif
574 1845
575#if EV_MINIMAL < 2 1846#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1847# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1848# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 1849# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 1850#else
580# define EV_RELEASE_CB (void)0 1851# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 1852# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1853# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 1854#endif
584 1855
585#define EVUNLOOP_RECURSE 0x80 1856#define EVBREAK_RECURSE 0x80
586 1857
587/*****************************************************************************/ 1858/*****************************************************************************/
588 1859
589#ifndef EV_HAVE_EV_TIME 1860#ifndef EV_HAVE_EV_TIME
590ev_tstamp 1861ev_tstamp
591ev_time (void) 1862ev_time (void) EV_THROW
592{ 1863{
593#if EV_USE_REALTIME 1864#if EV_USE_REALTIME
594 if (expect_true (have_realtime)) 1865 if (expect_true (have_realtime))
595 { 1866 {
596 struct timespec ts; 1867 struct timespec ts;
… …
620 return ev_time (); 1891 return ev_time ();
621} 1892}
622 1893
623#if EV_MULTIPLICITY 1894#if EV_MULTIPLICITY
624ev_tstamp 1895ev_tstamp
625ev_now (EV_P) 1896ev_now (EV_P) EV_THROW
626{ 1897{
627 return ev_rt_now; 1898 return ev_rt_now;
628} 1899}
629#endif 1900#endif
630 1901
631void 1902void
632ev_sleep (ev_tstamp delay) 1903ev_sleep (ev_tstamp delay) EV_THROW
633{ 1904{
634 if (delay > 0.) 1905 if (delay > 0.)
635 { 1906 {
636#if EV_USE_NANOSLEEP 1907#if EV_USE_NANOSLEEP
637 struct timespec ts; 1908 struct timespec ts;
638 1909
639 ts.tv_sec = (time_t)delay; 1910 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
643#elif defined(_WIN32) 1912#elif defined _WIN32
1913 /* maybe this should round up, as ms is very low resolution */
1914 /* compared to select (µs) or nanosleep (ns) */
644 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
645#else 1916#else
646 struct timeval tv; 1917 struct timeval tv;
647 1918
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650
651 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1919 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1920 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 1921 /* by older ones */
1922 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 1923 select (0, 0, 0, 0, &tv);
655#endif 1924#endif
656 } 1925 }
657} 1926}
658 1927
659/*****************************************************************************/ 1928/*****************************************************************************/
660 1929
661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1930#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
662 1931
663/* find a suitable new size for the given array, */ 1932/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 1933/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 1934inline_size int
666array_nextsize (int elem, int cur, int cnt) 1935array_nextsize (int elem, int cur, int cnt)
667{ 1936{
668 int ncur = cur + 1; 1937 int ncur = cur + 1;
669 1938
670 do 1939 do
671 ncur <<= 1; 1940 ncur <<= 1;
672 while (cnt > ncur); 1941 while (cnt > ncur);
673 1942
674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1943 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1944 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 1945 {
677 ncur *= elem; 1946 ncur *= elem;
678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1947 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
679 ncur = ncur - sizeof (void *) * 4; 1948 ncur = ncur - sizeof (void *) * 4;
… …
681 } 1950 }
682 1951
683 return ncur; 1952 return ncur;
684} 1953}
685 1954
686static noinline void * 1955noinline ecb_cold
1956static void *
687array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
688{ 1958{
689 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
691} 1961}
… …
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
695 1965
696#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
698 { \ 1968 { \
699 int ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
703 } 1973 }
704 1974
… …
716 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
717 1987
718/*****************************************************************************/ 1988/*****************************************************************************/
719 1989
720/* dummy callback for pending events */ 1990/* dummy callback for pending events */
721static void noinline 1991noinline
1992static void
722pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
723{ 1994{
724} 1995}
725 1996
726void noinline 1997noinline
1998void
727ev_feed_event (EV_P_ void *w, int revents) 1999ev_feed_event (EV_P_ void *w, int revents) EV_THROW
728{ 2000{
729 W w_ = (W)w; 2001 W w_ = (W)w;
730 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
731 2003
732 if (expect_false (w_->pending)) 2004 if (expect_false (w_->pending))
… …
736 w_->pending = ++pendingcnt [pri]; 2008 w_->pending = ++pendingcnt [pri];
737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2009 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
738 pendings [pri][w_->pending - 1].w = w_; 2010 pendings [pri][w_->pending - 1].w = w_;
739 pendings [pri][w_->pending - 1].events = revents; 2011 pendings [pri][w_->pending - 1].events = revents;
740 } 2012 }
2013
2014 pendingpri = NUMPRI - 1;
741} 2015}
742 2016
743inline_speed void 2017inline_speed void
744feed_reverse (EV_P_ W w) 2018feed_reverse (EV_P_ W w)
745{ 2019{
… …
765} 2039}
766 2040
767/*****************************************************************************/ 2041/*****************************************************************************/
768 2042
769inline_speed void 2043inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 2044fd_event_nocheck (EV_P_ int fd, int revents)
771{ 2045{
772 ANFD *anfd = anfds + fd; 2046 ANFD *anfd = anfds + fd;
773 ev_io *w; 2047 ev_io *w;
774 2048
775 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2049 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
787fd_event (EV_P_ int fd, int revents) 2061fd_event (EV_P_ int fd, int revents)
788{ 2062{
789 ANFD *anfd = anfds + fd; 2063 ANFD *anfd = anfds + fd;
790 2064
791 if (expect_true (!anfd->reify)) 2065 if (expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 2066 fd_event_nocheck (EV_A_ fd, revents);
793} 2067}
794 2068
795void 2069void
796ev_feed_fd_event (EV_P_ int fd, int revents) 2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
797{ 2071{
798 if (fd >= 0 && fd < anfdmax) 2072 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 2073 fd_event_nocheck (EV_A_ fd, revents);
800} 2074}
801 2075
802/* make sure the external fd watch events are in-sync */ 2076/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 2077/* with the kernel/libev internal state */
804inline_size void 2078inline_size void
805fd_reify (EV_P) 2079fd_reify (EV_P)
806{ 2080{
807 int i; 2081 int i;
808 2082
2083#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2084 for (i = 0; i < fdchangecnt; ++i)
2085 {
2086 int fd = fdchanges [i];
2087 ANFD *anfd = anfds + fd;
2088
2089 if (anfd->reify & EV__IOFDSET && anfd->head)
2090 {
2091 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2092
2093 if (handle != anfd->handle)
2094 {
2095 unsigned long arg;
2096
2097 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2098
2099 /* handle changed, but fd didn't - we need to do it in two steps */
2100 backend_modify (EV_A_ fd, anfd->events, 0);
2101 anfd->events = 0;
2102 anfd->handle = handle;
2103 }
2104 }
2105 }
2106#endif
2107
809 for (i = 0; i < fdchangecnt; ++i) 2108 for (i = 0; i < fdchangecnt; ++i)
810 { 2109 {
811 int fd = fdchanges [i]; 2110 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 2111 ANFD *anfd = anfds + fd;
813 ev_io *w; 2112 ev_io *w;
814 2113
815 unsigned char events = 0; 2114 unsigned char o_events = anfd->events;
2115 unsigned char o_reify = anfd->reify;
816 2116
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2117 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 2118
820#if EV_SELECT_IS_WINSOCKET 2119 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 2120 {
823 unsigned long arg; 2121 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 2122
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2123 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 2124 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 2125
828 #endif 2126 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2127 o_reify = EV__IOFDSET; /* actually |= */
830 } 2128 }
831#endif
832 2129
833 { 2130 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 2131 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 2132 }
844 2133
845 fdchangecnt = 0; 2134 fdchangecnt = 0;
846} 2135}
847 2136
848/* something about the given fd changed */ 2137/* something about the given fd changed */
849inline_size void 2138inline_size
2139void
850fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
851{ 2141{
852 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
853 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
854 2144
… …
859 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
860 } 2150 }
861} 2151}
862 2152
863/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2153/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
864inline_speed void 2154inline_speed ecb_cold void
865fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
866{ 2156{
867 ev_io *w; 2157 ev_io *w;
868 2158
869 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 2161 ev_io_stop (EV_A_ w);
872 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2162 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
873 } 2163 }
874} 2164}
875 2165
876/* check whether the given fd is atcually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
877inline_size int 2167inline_size ecb_cold int
878fd_valid (int fd) 2168fd_valid (int fd)
879{ 2169{
880#ifdef _WIN32 2170#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 2172#else
883 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
884#endif 2174#endif
885} 2175}
886 2176
887/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
888static void noinline 2178noinline ecb_cold
2179static void
889fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
890{ 2181{
891 int fd; 2182 int fd;
892 2183
893 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
897} 2188}
898 2189
899/* called on ENOMEM in select/poll to kill some fds and retry */ 2190/* called on ENOMEM in select/poll to kill some fds and retry */
900static void noinline 2191noinline ecb_cold
2192static void
901fd_enomem (EV_P) 2193fd_enomem (EV_P)
902{ 2194{
903 int fd; 2195 int fd;
904 2196
905 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 2198 if (anfds [fd].events)
907 { 2199 {
908 fd_kill (EV_A_ fd); 2200 fd_kill (EV_A_ fd);
909 return; 2201 break;
910 } 2202 }
911} 2203}
912 2204
913/* usually called after fork if backend needs to re-arm all fds from scratch */ 2205/* usually called after fork if backend needs to re-arm all fds from scratch */
914static void noinline 2206noinline
2207static void
915fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
916{ 2209{
917 int fd; 2210 int fd;
918 2211
919 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
923 anfds [fd].emask = 0; 2216 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2217 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 2218 }
926} 2219}
927 2220
2221/* used to prepare libev internal fd's */
2222/* this is not fork-safe */
2223inline_speed void
2224fd_intern (int fd)
2225{
2226#ifdef _WIN32
2227 unsigned long arg = 1;
2228 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2229#else
2230 fcntl (fd, F_SETFD, FD_CLOEXEC);
2231 fcntl (fd, F_SETFL, O_NONBLOCK);
2232#endif
2233}
2234
928/*****************************************************************************/ 2235/*****************************************************************************/
929 2236
930/* 2237/*
931 * the heap functions want a real array index. array index 0 uis guaranteed to not 2238 * the heap functions want a real array index. array index 0 is guaranteed to not
932 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2239 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
933 * the branching factor of the d-tree. 2240 * the branching factor of the d-tree.
934 */ 2241 */
935 2242
936/* 2243/*
… …
1004 2311
1005 for (;;) 2312 for (;;)
1006 { 2313 {
1007 int c = k << 1; 2314 int c = k << 1;
1008 2315
1009 if (c > N + HEAP0 - 1) 2316 if (c >= N + HEAP0)
1010 break; 2317 break;
1011 2318
1012 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2319 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013 ? 1 : 0; 2320 ? 1 : 0;
1014 2321
… …
1050 2357
1051/* move an element suitably so it is in a correct place */ 2358/* move an element suitably so it is in a correct place */
1052inline_size void 2359inline_size void
1053adjustheap (ANHE *heap, int N, int k) 2360adjustheap (ANHE *heap, int N, int k)
1054{ 2361{
1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2362 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056 upheap (heap, k); 2363 upheap (heap, k);
1057 else 2364 else
1058 downheap (heap, N, k); 2365 downheap (heap, N, k);
1059} 2366}
1060 2367
… …
1073/*****************************************************************************/ 2380/*****************************************************************************/
1074 2381
1075/* associate signal watchers to a signal signal */ 2382/* associate signal watchers to a signal signal */
1076typedef struct 2383typedef struct
1077{ 2384{
2385 EV_ATOMIC_T pending;
2386#if EV_MULTIPLICITY
2387 EV_P;
2388#endif
1078 WL head; 2389 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 2390} ANSIG;
1081 2391
1082static ANSIG *signals; 2392static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 2393
1087/*****************************************************************************/ 2394/*****************************************************************************/
1088 2395
1089/* used to prepare libev internal fd's */ 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* this is not fork-safe */ 2397
2398noinline ecb_cold
2399static void
2400evpipe_init (EV_P)
2401{
2402 if (!ev_is_active (&pipe_w))
2403 {
2404 int fds [2];
2405
2406# if EV_USE_EVENTFD
2407 fds [0] = -1;
2408 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2409 if (fds [1] < 0 && errno == EINVAL)
2410 fds [1] = eventfd (0, 0);
2411
2412 if (fds [1] < 0)
2413# endif
2414 {
2415 while (pipe (fds))
2416 ev_syserr ("(libev) error creating signal/async pipe");
2417
2418 fd_intern (fds [0]);
2419 }
2420
2421 evpipe [0] = fds [0];
2422
2423 if (evpipe [1] < 0)
2424 evpipe [1] = fds [1]; /* first call, set write fd */
2425 else
2426 {
2427 /* on subsequent calls, do not change evpipe [1] */
2428 /* so that evpipe_write can always rely on its value. */
2429 /* this branch does not do anything sensible on windows, */
2430 /* so must not be executed on windows */
2431
2432 dup2 (fds [1], evpipe [1]);
2433 close (fds [1]);
2434 }
2435
2436 fd_intern (evpipe [1]);
2437
2438 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2439 ev_io_start (EV_A_ &pipe_w);
2440 ev_unref (EV_A); /* watcher should not keep loop alive */
2441 }
2442}
2443
1091inline_speed void 2444inline_speed void
1092fd_intern (int fd) 2445evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 2446{
1094#ifdef _WIN32 2447 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 2448
1103static void noinline 2449 if (expect_true (*flag))
1104evpipe_init (EV_P) 2450 return;
1105{ 2451
1106 if (!ev_is_active (&pipe_w)) 2452 *flag = 1;
2453 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2454
2455 pipe_write_skipped = 1;
2456
2457 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2458
2459 if (pipe_write_wanted)
1107 { 2460 {
2461 int old_errno;
2462
2463 pipe_write_skipped = 0;
2464 ECB_MEMORY_FENCE_RELEASE;
2465
2466 old_errno = errno; /* save errno because write will clobber it */
2467
1108#if EV_USE_EVENTFD 2468#if EV_USE_EVENTFD
1109 if ((evfd = eventfd (0, 0)) >= 0) 2469 if (evpipe [0] < 0)
1110 { 2470 {
1111 evpipe [0] = -1; 2471 uint64_t counter = 1;
1112 fd_intern (evfd); 2472 write (evpipe [1], &counter, sizeof (uint64_t));
1113 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 2473 }
1115 else 2474 else
1116#endif 2475#endif
1117 { 2476 {
1118 while (pipe (evpipe)) 2477#ifdef _WIN32
1119 ev_syserr ("(libev) error creating signal/async pipe"); 2478 WSABUF buf;
1120 2479 DWORD sent;
1121 fd_intern (evpipe [0]); 2480 buf.buf = (char *)&buf;
1122 fd_intern (evpipe [1]); 2481 buf.len = 1;
1123 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2482 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2483#else
2484 write (evpipe [1], &(evpipe [1]), 1);
2485#endif
1124 } 2486 }
1125
1126 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 }
1129}
1130
1131inline_size void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{
1134 if (!*flag)
1135 {
1136 int old_errno = errno; /* save errno because write might clobber it */
1137
1138 *flag = 1;
1139
1140#if EV_USE_EVENTFD
1141 if (evfd >= 0)
1142 {
1143 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t));
1145 }
1146 else
1147#endif
1148 write (evpipe [1], &old_errno, 1);
1149 2487
1150 errno = old_errno; 2488 errno = old_errno;
1151 } 2489 }
1152} 2490}
1153 2491
1154/* called whenever the libev signal pipe */ 2492/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 2493/* got some events (signal, async) */
1156static void 2494static void
1157pipecb (EV_P_ ev_io *iow, int revents) 2495pipecb (EV_P_ ev_io *iow, int revents)
1158{ 2496{
2497 int i;
2498
2499 if (revents & EV_READ)
2500 {
1159#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1160 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1161 { 2503 {
1162 uint64_t counter; 2504 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1164 } 2506 }
1165 else 2507 else
1166#endif 2508#endif
1167 { 2509 {
1168 char dummy; 2510 char dummy[4];
2511#ifdef _WIN32
2512 WSABUF buf;
2513 DWORD recvd;
2514 DWORD flags = 0;
2515 buf.buf = dummy;
2516 buf.len = sizeof (dummy);
2517 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2518#else
1169 read (evpipe [0], &dummy, 1); 2519 read (evpipe [0], &dummy, sizeof (dummy));
2520#endif
2521 }
2522 }
2523
2524 pipe_write_skipped = 0;
2525
2526 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2527
2528#if EV_SIGNAL_ENABLE
2529 if (sig_pending)
1170 } 2530 {
2531 sig_pending = 0;
1171 2532
1172 if (gotsig && ev_is_default_loop (EV_A)) 2533 ECB_MEMORY_FENCE;
1173 {
1174 int signum;
1175 gotsig = 0;
1176 2534
1177 for (signum = signalmax; signum--; ) 2535 for (i = EV_NSIG - 1; i--; )
1178 if (signals [signum].gotsig) 2536 if (expect_false (signals [i].pending))
1179 ev_feed_signal_event (EV_A_ signum + 1); 2537 ev_feed_signal_event (EV_A_ i + 1);
1180 } 2538 }
2539#endif
1181 2540
1182#if EV_ASYNC_ENABLE 2541#if EV_ASYNC_ENABLE
1183 if (gotasync) 2542 if (async_pending)
1184 { 2543 {
1185 int i; 2544 async_pending = 0;
1186 gotasync = 0; 2545
2546 ECB_MEMORY_FENCE;
1187 2547
1188 for (i = asynccnt; i--; ) 2548 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 2549 if (asyncs [i]->sent)
1190 { 2550 {
1191 asyncs [i]->sent = 0; 2551 asyncs [i]->sent = 0;
2552 ECB_MEMORY_FENCE_RELEASE;
1192 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2553 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1193 } 2554 }
1194 } 2555 }
1195#endif 2556#endif
1196} 2557}
1197 2558
1198/*****************************************************************************/ 2559/*****************************************************************************/
1199 2560
2561void
2562ev_feed_signal (int signum) EV_THROW
2563{
2564#if EV_MULTIPLICITY
2565 EV_P;
2566 ECB_MEMORY_FENCE_ACQUIRE;
2567 EV_A = signals [signum - 1].loop;
2568
2569 if (!EV_A)
2570 return;
2571#endif
2572
2573 signals [signum - 1].pending = 1;
2574 evpipe_write (EV_A_ &sig_pending);
2575}
2576
1200static void 2577static void
1201ev_sighandler (int signum) 2578ev_sighandler (int signum)
1202{ 2579{
2580#ifdef _WIN32
2581 signal (signum, ev_sighandler);
2582#endif
2583
2584 ev_feed_signal (signum);
2585}
2586
2587noinline
2588void
2589ev_feed_signal_event (EV_P_ int signum) EV_THROW
2590{
2591 WL w;
2592
2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2594 return;
2595
2596 --signum;
2597
1203#if EV_MULTIPLICITY 2598#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct; 2599 /* it is permissible to try to feed a signal to the wrong loop */
1205#endif 2600 /* or, likely more useful, feeding a signal nobody is waiting for */
1206 2601
1207#if _WIN32 2602 if (expect_false (signals [signum].loop != EV_A))
1208 signal (signum, ev_sighandler);
1209#endif
1210
1211 signals [signum - 1].gotsig = 1;
1212 evpipe_write (EV_A_ &gotsig);
1213}
1214
1215void noinline
1216ev_feed_signal_event (EV_P_ int signum)
1217{
1218 WL w;
1219
1220#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1222#endif
1223
1224 --signum;
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 2603 return;
2604#endif
1228 2605
1229 signals [signum].gotsig = 0; 2606 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE;
1230 2608
1231 for (w = signals [signum].head; w; w = w->next) 2609 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 2611}
1234 2612
2613#if EV_USE_SIGNALFD
2614static void
2615sigfdcb (EV_P_ ev_io *iow, int revents)
2616{
2617 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2618
2619 for (;;)
2620 {
2621 ssize_t res = read (sigfd, si, sizeof (si));
2622
2623 /* not ISO-C, as res might be -1, but works with SuS */
2624 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2625 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2626
2627 if (res < (ssize_t)sizeof (si))
2628 break;
2629 }
2630}
2631#endif
2632
2633#endif
2634
1235/*****************************************************************************/ 2635/*****************************************************************************/
1236 2636
2637#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 2638static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 2639
1241static ev_signal childev; 2640static ev_signal childev;
1242 2641
1243#ifndef WIFCONTINUED 2642#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 2643# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 2648child_reap (EV_P_ int chain, int pid, int status)
1250{ 2649{
1251 ev_child *w; 2650 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2651 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 2652
1254 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2653 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1255 { 2654 {
1256 if ((w->pid == pid || !w->pid) 2655 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 2656 && (!traced || (w->flags & 1)))
1258 { 2657 {
1259 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2658 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1284 /* make sure we are called again until all children have been reaped */ 2683 /* make sure we are called again until all children have been reaped */
1285 /* we need to do it this way so that the callback gets called before we continue */ 2684 /* we need to do it this way so that the callback gets called before we continue */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2685 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2686
1288 child_reap (EV_A_ pid, pid, status); 2687 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2688 if ((EV_PID_HASHSIZE) > 1)
1290 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2689 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1291} 2690}
1292 2691
1293#endif 2692#endif
1294 2693
1295/*****************************************************************************/ 2694/*****************************************************************************/
1296 2695
2696#if EV_USE_IOCP
2697# include "ev_iocp.c"
2698#endif
1297#if EV_USE_PORT 2699#if EV_USE_PORT
1298# include "ev_port.c" 2700# include "ev_port.c"
1299#endif 2701#endif
1300#if EV_USE_KQUEUE 2702#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2703# include "ev_kqueue.c"
… …
1308#endif 2710#endif
1309#if EV_USE_SELECT 2711#if EV_USE_SELECT
1310# include "ev_select.c" 2712# include "ev_select.c"
1311#endif 2713#endif
1312 2714
1313int 2715ecb_cold int
1314ev_version_major (void) 2716ev_version_major (void) EV_THROW
1315{ 2717{
1316 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
1317} 2719}
1318 2720
1319int 2721ecb_cold int
1320ev_version_minor (void) 2722ev_version_minor (void) EV_THROW
1321{ 2723{
1322 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
1323} 2725}
1324 2726
1325/* return true if we are running with elevated privileges and should ignore env variables */ 2727/* return true if we are running with elevated privileges and should ignore env variables */
1326int inline_size 2728inline_size ecb_cold int
1327enable_secure (void) 2729enable_secure (void)
1328{ 2730{
1329#ifdef _WIN32 2731#ifdef _WIN32
1330 return 0; 2732 return 0;
1331#else 2733#else
1332 return getuid () != geteuid () 2734 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2735 || getgid () != getegid ();
1334#endif 2736#endif
1335} 2737}
1336 2738
2739ecb_cold
1337unsigned int 2740unsigned int
1338ev_supported_backends (void) 2741ev_supported_backends (void) EV_THROW
1339{ 2742{
1340 unsigned int flags = 0; 2743 unsigned int flags = 0;
1341 2744
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1343 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1347 2750
1348 return flags; 2751 return flags;
1349} 2752}
1350 2753
2754ecb_cold
1351unsigned int 2755unsigned int
1352ev_recommended_backends (void) 2756ev_recommended_backends (void) EV_THROW
1353{ 2757{
1354 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
1355 2759
1356#ifndef __NetBSD__ 2760#ifndef __NetBSD__
1357 /* kqueue is borked on everything but netbsd apparently */ 2761 /* kqueue is borked on everything but netbsd apparently */
… …
1361#ifdef __APPLE__ 2765#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2766 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2767 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2768 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1365#endif 2769#endif
2770#ifdef __FreeBSD__
2771 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2772#endif
1366 2773
1367 return flags; 2774 return flags;
1368} 2775}
1369 2776
2777ecb_cold
1370unsigned int 2778unsigned int
1371ev_embeddable_backends (void) 2779ev_embeddable_backends (void) EV_THROW
1372{ 2780{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1374 2782
1375 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2783 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1376 /* please fix it and tell me how to detect the fix */ 2784 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1377 flags &= ~EVBACKEND_EPOLL; 2785 flags &= ~EVBACKEND_EPOLL;
1378 2786
1379 return flags; 2787 return flags;
1380} 2788}
1381 2789
1382unsigned int 2790unsigned int
1383ev_backend (EV_P) 2791ev_backend (EV_P) EV_THROW
1384{ 2792{
1385 return backend; 2793 return backend;
1386} 2794}
1387 2795
1388#if EV_MINIMAL < 2 2796#if EV_FEATURE_API
1389unsigned int 2797unsigned int
1390ev_loop_count (EV_P) 2798ev_iteration (EV_P) EV_THROW
1391{ 2799{
1392 return loop_count; 2800 return loop_count;
1393} 2801}
1394 2802
1395unsigned int 2803unsigned int
1396ev_loop_depth (EV_P) 2804ev_depth (EV_P) EV_THROW
1397{ 2805{
1398 return loop_depth; 2806 return loop_depth;
1399} 2807}
1400 2808
1401void 2809void
1402ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2810ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1403{ 2811{
1404 io_blocktime = interval; 2812 io_blocktime = interval;
1405} 2813}
1406 2814
1407void 2815void
1408ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2816ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1409{ 2817{
1410 timeout_blocktime = interval; 2818 timeout_blocktime = interval;
1411} 2819}
1412 2820
1413void 2821void
1414ev_set_userdata (EV_P_ void *data) 2822ev_set_userdata (EV_P_ void *data) EV_THROW
1415{ 2823{
1416 userdata = data; 2824 userdata = data;
1417} 2825}
1418 2826
1419void * 2827void *
1420ev_userdata (EV_P) 2828ev_userdata (EV_P) EV_THROW
1421{ 2829{
1422 return userdata; 2830 return userdata;
1423} 2831}
1424 2832
2833void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2834ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1426{ 2835{
1427 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
1428} 2837}
1429 2838
2839void
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2840ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1431{ 2841{
1432 release_cb = release; 2842 release_cb = release;
1433 acquire_cb = acquire; 2843 acquire_cb = acquire;
1434} 2844}
1435#endif 2845#endif
1436 2846
1437/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
1438static void noinline 2848noinline ecb_cold
2849static void
1439loop_init (EV_P_ unsigned int flags) 2850loop_init (EV_P_ unsigned int flags) EV_THROW
1440{ 2851{
1441 if (!backend) 2852 if (!backend)
1442 { 2853 {
2854 origflags = flags;
2855
1443#if EV_USE_REALTIME 2856#if EV_USE_REALTIME
1444 if (!have_realtime) 2857 if (!have_realtime)
1445 { 2858 {
1446 struct timespec ts; 2859 struct timespec ts;
1447 2860
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2871 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 2872 have_monotonic = 1;
1460 } 2873 }
1461#endif 2874#endif
1462 2875
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 2876 /* pid check not overridable via env */
1481#ifndef _WIN32 2877#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 2878 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 2879 curpid = getpid ();
1484#endif 2880#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 2882 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 2883 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 2884 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 2885 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 2886
1491 if (!(flags & 0x0000ffffU)) 2887 ev_rt_now = ev_time ();
2888 mn_now = get_clock ();
2889 now_floor = mn_now;
2890 rtmn_diff = ev_rt_now - mn_now;
2891#if EV_FEATURE_API
2892 invoke_cb = ev_invoke_pending;
2893#endif
2894
2895 io_blocktime = 0.;
2896 timeout_blocktime = 0.;
2897 backend = 0;
2898 backend_fd = -1;
2899 sig_pending = 0;
2900#if EV_ASYNC_ENABLE
2901 async_pending = 0;
2902#endif
2903 pipe_write_skipped = 0;
2904 pipe_write_wanted = 0;
2905 evpipe [0] = -1;
2906 evpipe [1] = -1;
2907#if EV_USE_INOTIFY
2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2909#endif
2910#if EV_USE_SIGNALFD
2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2912#endif
2913
2914 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 2915 flags |= ev_recommended_backends ();
1493 2916
2917#if EV_USE_IOCP
2918 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2919#endif
1494#if EV_USE_PORT 2920#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2921 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 2922#endif
1497#if EV_USE_KQUEUE 2923#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2924 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2933 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1508#endif 2934#endif
1509 2935
1510 ev_prepare_init (&pending_w, pendingcb); 2936 ev_prepare_init (&pending_w, pendingcb);
1511 2937
2938#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 2939 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 2940 ev_set_priority (&pipe_w, EV_MAXPRI);
2941#endif
1514 } 2942 }
1515} 2943}
1516 2944
1517/* free up a loop structure */ 2945/* free up a loop structure */
1518static void noinline 2946ecb_cold
2947void
1519loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
1520{ 2949{
1521 int i; 2950 int i;
1522 2951
2952#if EV_MULTIPLICITY
2953 /* mimic free (0) */
2954 if (!EV_A)
2955 return;
2956#endif
2957
2958#if EV_CLEANUP_ENABLE
2959 /* queue cleanup watchers (and execute them) */
2960 if (expect_false (cleanupcnt))
2961 {
2962 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2963 EV_INVOKE_PENDING;
2964 }
2965#endif
2966
2967#if EV_CHILD_ENABLE
2968 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2969 {
2970 ev_ref (EV_A); /* child watcher */
2971 ev_signal_stop (EV_A_ &childev);
2972 }
2973#endif
2974
1523 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
1524 { 2976 {
1525 ev_ref (EV_A); /* signal watcher */ 2977 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 2979
2980 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2981 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2982 }
2983
1528#if EV_USE_EVENTFD 2984#if EV_USE_SIGNALFD
1529 if (evfd >= 0) 2985 if (ev_is_active (&sigfd_w))
1530 close (evfd); 2986 close (sigfd);
1531#endif 2987#endif
1532
1533 if (evpipe [0] >= 0)
1534 {
1535 close (evpipe [0]);
1536 close (evpipe [1]);
1537 }
1538 }
1539 2988
1540#if EV_USE_INOTIFY 2989#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 2990 if (fs_fd >= 0)
1542 close (fs_fd); 2991 close (fs_fd);
1543#endif 2992#endif
1544 2993
1545 if (backend_fd >= 0) 2994 if (backend_fd >= 0)
1546 close (backend_fd); 2995 close (backend_fd);
1547 2996
2997#if EV_USE_IOCP
2998 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2999#endif
1548#if EV_USE_PORT 3000#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3001 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 3002#endif
1551#if EV_USE_KQUEUE 3003#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3004 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1567#if EV_IDLE_ENABLE 3019#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 3020 array_free (idle, [i]);
1569#endif 3021#endif
1570 } 3022 }
1571 3023
1572 ev_free (anfds); anfdmax = 0; 3024 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 3025
1574 /* have to use the microsoft-never-gets-it-right macro */ 3026 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 3027 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 3028 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 3029 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 3031 array_free (periodic, EMPTY);
1580#endif 3032#endif
1581#if EV_FORK_ENABLE 3033#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 3034 array_free (fork, EMPTY);
1583#endif 3035#endif
3036#if EV_CLEANUP_ENABLE
3037 array_free (cleanup, EMPTY);
3038#endif
1584 array_free (prepare, EMPTY); 3039 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 3040 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 3041#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 3042 array_free (async, EMPTY);
1588#endif 3043#endif
1589 3044
1590 backend = 0; 3045 backend = 0;
3046
3047#if EV_MULTIPLICITY
3048 if (ev_is_default_loop (EV_A))
3049#endif
3050 ev_default_loop_ptr = 0;
3051#if EV_MULTIPLICITY
3052 else
3053 ev_free (EV_A);
3054#endif
1591} 3055}
1592 3056
1593#if EV_USE_INOTIFY 3057#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 3058inline_size void infy_fork (EV_P);
1595#endif 3059#endif
… …
1608#endif 3072#endif
1609#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
1610 infy_fork (EV_A); 3074 infy_fork (EV_A);
1611#endif 3075#endif
1612 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1613 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
1614 { 3079 {
1615 /* this "locks" the handlers against writing to the pipe */ 3080 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 3081
1622 ev_ref (EV_A); 3082 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
1624 3084
1625#if EV_USE_EVENTFD
1626 if (evfd >= 0)
1627 close (evfd);
1628#endif
1629
1630 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
1631 { 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
1632 close (evpipe [0]);
1633 close (evpipe [1]);
1634 }
1635 3087
1636 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 3089 /* iterate over everything, in case we missed something before */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1639 } 3091 }
3092#endif
1640 3093
1641 postfork = 0; 3094 postfork = 0;
1642} 3095}
1643 3096
1644#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
1645 3098
3099ecb_cold
1646struct ev_loop * 3100struct ev_loop *
1647ev_loop_new (unsigned int flags) 3101ev_loop_new (unsigned int flags) EV_THROW
1648{ 3102{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 3104
1651 memset (loop, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 3106 loop_init (EV_A_ flags);
1654 3107
1655 if (ev_backend (EV_A)) 3108 if (ev_backend (EV_A))
1656 return loop; 3109 return EV_A;
1657 3110
3111 ev_free (EV_A);
1658 return 0; 3112 return 0;
1659} 3113}
1660 3114
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 3115#endif /* multiplicity */
1674 3116
1675#if EV_VERIFY 3117#if EV_VERIFY
1676static void noinline 3118noinline ecb_cold
3119static void
1677verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
1678{ 3121{
1679 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3122 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1680 3123
1681 if (w->pending) 3124 if (w->pending)
1682 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3125 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1683} 3126}
1684 3127
1685static void noinline 3128noinline ecb_cold
3129static void
1686verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
1687{ 3131{
1688 int i; 3132 int i;
1689 3133
1690 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 3139
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 3141 }
1698} 3142}
1699 3143
1700static void noinline 3144noinline ecb_cold
3145static void
1701array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
1702{ 3147{
1703 while (cnt--) 3148 while (cnt--)
1704 { 3149 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 3151 verify_watcher (EV_A_ ws [cnt]);
1707 } 3152 }
1708} 3153}
1709#endif 3154#endif
1710 3155
1711#if EV_MINIMAL < 2 3156#if EV_FEATURE_API
1712void 3157void ecb_cold
1713ev_loop_verify (EV_P) 3158ev_verify (EV_P) EV_THROW
1714{ 3159{
1715#if EV_VERIFY 3160#if EV_VERIFY
1716 int i; 3161 int i;
1717 WL w; 3162 WL w, w2;
1718 3163
1719 assert (activecnt >= -1); 3164 assert (activecnt >= -1);
1720 3165
1721 assert (fdchangemax >= fdchangecnt); 3166 assert (fdchangemax >= fdchangecnt);
1722 for (i = 0; i < fdchangecnt; ++i) 3167 for (i = 0; i < fdchangecnt; ++i)
1723 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3168 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1724 3169
1725 assert (anfdmax >= 0); 3170 assert (anfdmax >= 0);
1726 for (i = 0; i < anfdmax; ++i) 3171 for (i = 0; i < anfdmax; ++i)
3172 {
3173 int j = 0;
3174
1727 for (w = anfds [i].head; w; w = w->next) 3175 for (w = w2 = anfds [i].head; w; w = w->next)
1728 { 3176 {
1729 verify_watcher (EV_A_ (W)w); 3177 verify_watcher (EV_A_ (W)w);
3178
3179 if (j++ & 1)
3180 {
3181 assert (("libev: io watcher list contains a loop", w != w2));
3182 w2 = w2->next;
3183 }
3184
1730 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3185 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1731 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3186 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1732 } 3187 }
3188 }
1733 3189
1734 assert (timermax >= timercnt); 3190 assert (timermax >= timercnt);
1735 verify_heap (EV_A_ timers, timercnt); 3191 verify_heap (EV_A_ timers, timercnt);
1736 3192
1737#if EV_PERIODIC_ENABLE 3193#if EV_PERIODIC_ENABLE
… …
1752#if EV_FORK_ENABLE 3208#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 3209 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 3210 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 3211#endif
1756 3212
3213#if EV_CLEANUP_ENABLE
3214 assert (cleanupmax >= cleanupcnt);
3215 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3216#endif
3217
1757#if EV_ASYNC_ENABLE 3218#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 3219 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 3220 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 3221#endif
1761 3222
3223#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 3224 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 3225 array_verify (EV_A_ (W *)prepares, preparecnt);
3226#endif
1764 3227
3228#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 3229 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 3230 array_verify (EV_A_ (W *)checks, checkcnt);
3231#endif
1767 3232
1768# if 0 3233# if 0
3234#if EV_CHILD_ENABLE
1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3235 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3236 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3237#endif
1771# endif 3238# endif
1772#endif 3239#endif
1773} 3240}
1774#endif 3241#endif
1775 3242
1776#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
1777struct ev_loop * 3245struct ev_loop *
1778ev_default_loop_init (unsigned int flags)
1779#else 3246#else
1780int 3247int
3248#endif
1781ev_default_loop (unsigned int flags) 3249ev_default_loop (unsigned int flags) EV_THROW
1782#endif
1783{ 3250{
1784 if (!ev_default_loop_ptr) 3251 if (!ev_default_loop_ptr)
1785 { 3252 {
1786#if EV_MULTIPLICITY 3253#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3254 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 3255#else
1789 ev_default_loop_ptr = 1; 3256 ev_default_loop_ptr = 1;
1790#endif 3257#endif
1791 3258
1792 loop_init (EV_A_ flags); 3259 loop_init (EV_A_ flags);
1793 3260
1794 if (ev_backend (EV_A)) 3261 if (ev_backend (EV_A))
1795 { 3262 {
1796#ifndef _WIN32 3263#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 3264 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 3265 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 3266 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3267 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 3268#endif
… …
1806 3273
1807 return ev_default_loop_ptr; 3274 return ev_default_loop_ptr;
1808} 3275}
1809 3276
1810void 3277void
1811ev_default_destroy (void) 3278ev_loop_fork (EV_P) EV_THROW
1812{ 3279{
1813#if EV_MULTIPLICITY 3280 postfork = 1;
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */
1835} 3281}
1836 3282
1837/*****************************************************************************/ 3283/*****************************************************************************/
1838 3284
1839void 3285void
1840ev_invoke (EV_P_ void *w, int revents) 3286ev_invoke (EV_P_ void *w, int revents)
1841{ 3287{
1842 EV_CB_INVOKE ((W)w, revents); 3288 EV_CB_INVOKE ((W)w, revents);
1843} 3289}
1844 3290
3291unsigned int
3292ev_pending_count (EV_P) EV_THROW
3293{
3294 int pri;
3295 unsigned int count = 0;
3296
3297 for (pri = NUMPRI; pri--; )
3298 count += pendingcnt [pri];
3299
3300 return count;
3301}
3302
1845void noinline 3303noinline
3304void
1846ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
1847{ 3306{
1848 int pri; 3307 pendingpri = NUMPRI;
1849 3308
1850 for (pri = NUMPRI; pri--; ) 3309 do
3310 {
3311 --pendingpri;
3312
3313 /* pendingpri possibly gets modified in the inner loop */
1851 while (pendingcnt [pri]) 3314 while (pendingcnt [pendingpri])
1852 { 3315 {
1853 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3316 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1854 3317
1855 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1856 /* ^ this is no longer true, as pending_w could be here */
1857
1858 p->w->pending = 0; 3318 p->w->pending = 0;
1859 EV_CB_INVOKE (p->w, p->events); 3319 EV_CB_INVOKE (p->w, p->events);
1860 EV_FREQUENT_CHECK; 3320 EV_FREQUENT_CHECK;
1861 } 3321 }
3322 }
3323 while (pendingpri);
1862} 3324}
1863 3325
1864#if EV_IDLE_ENABLE 3326#if EV_IDLE_ENABLE
1865/* make idle watchers pending. this handles the "call-idle */ 3327/* make idle watchers pending. this handles the "call-idle */
1866/* only when higher priorities are idle" logic */ 3328/* only when higher priorities are idle" logic */
… …
1918 EV_FREQUENT_CHECK; 3380 EV_FREQUENT_CHECK;
1919 feed_reverse (EV_A_ (W)w); 3381 feed_reverse (EV_A_ (W)w);
1920 } 3382 }
1921 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3383 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1922 3384
1923 feed_reverse_done (EV_A_ EV_TIMEOUT); 3385 feed_reverse_done (EV_A_ EV_TIMER);
1924 } 3386 }
1925} 3387}
1926 3388
1927#if EV_PERIODIC_ENABLE 3389#if EV_PERIODIC_ENABLE
3390
3391noinline
3392static void
3393periodic_recalc (EV_P_ ev_periodic *w)
3394{
3395 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3396 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3397
3398 /* the above almost always errs on the low side */
3399 while (at <= ev_rt_now)
3400 {
3401 ev_tstamp nat = at + w->interval;
3402
3403 /* when resolution fails us, we use ev_rt_now */
3404 if (expect_false (nat == at))
3405 {
3406 at = ev_rt_now;
3407 break;
3408 }
3409
3410 at = nat;
3411 }
3412
3413 ev_at (w) = at;
3414}
3415
1928/* make periodics pending */ 3416/* make periodics pending */
1929inline_size void 3417inline_size void
1930periodics_reify (EV_P) 3418periodics_reify (EV_P)
1931{ 3419{
1932 EV_FREQUENT_CHECK; 3420 EV_FREQUENT_CHECK;
1933 3421
1934 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3422 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1935 { 3423 {
1936 int feed_count = 0;
1937
1938 do 3424 do
1939 { 3425 {
1940 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3426 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1941 3427
1942 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3428 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1951 ANHE_at_cache (periodics [HEAP0]); 3437 ANHE_at_cache (periodics [HEAP0]);
1952 downheap (periodics, periodiccnt, HEAP0); 3438 downheap (periodics, periodiccnt, HEAP0);
1953 } 3439 }
1954 else if (w->interval) 3440 else if (w->interval)
1955 { 3441 {
1956 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3442 periodic_recalc (EV_A_ w);
1957 /* if next trigger time is not sufficiently in the future, put it there */
1958 /* this might happen because of floating point inexactness */
1959 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1960 {
1961 ev_at (w) += w->interval;
1962
1963 /* if interval is unreasonably low we might still have a time in the past */
1964 /* so correct this. this will make the periodic very inexact, but the user */
1965 /* has effectively asked to get triggered more often than possible */
1966 if (ev_at (w) < ev_rt_now)
1967 ev_at (w) = ev_rt_now;
1968 }
1969
1970 ANHE_at_cache (periodics [HEAP0]); 3443 ANHE_at_cache (periodics [HEAP0]);
1971 downheap (periodics, periodiccnt, HEAP0); 3444 downheap (periodics, periodiccnt, HEAP0);
1972 } 3445 }
1973 else 3446 else
1974 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3447 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1981 feed_reverse_done (EV_A_ EV_PERIODIC); 3454 feed_reverse_done (EV_A_ EV_PERIODIC);
1982 } 3455 }
1983} 3456}
1984 3457
1985/* simply recalculate all periodics */ 3458/* simply recalculate all periodics */
1986/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3459/* TODO: maybe ensure that at least one event happens when jumping forward? */
1987static void noinline 3460noinline ecb_cold
3461static void
1988periodics_reschedule (EV_P) 3462periodics_reschedule (EV_P)
1989{ 3463{
1990 int i; 3464 int i;
1991 3465
1992 /* adjust periodics after time jump */ 3466 /* adjust periodics after time jump */
… …
1995 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3469 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1996 3470
1997 if (w->reschedule_cb) 3471 if (w->reschedule_cb)
1998 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3472 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1999 else if (w->interval) 3473 else if (w->interval)
2000 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3474 periodic_recalc (EV_A_ w);
2001 3475
2002 ANHE_at_cache (periodics [i]); 3476 ANHE_at_cache (periodics [i]);
2003 } 3477 }
2004 3478
2005 reheap (periodics, periodiccnt); 3479 reheap (periodics, periodiccnt);
2006} 3480}
2007#endif 3481#endif
2008 3482
2009/* adjust all timers by a given offset */ 3483/* adjust all timers by a given offset */
2010static void noinline 3484noinline ecb_cold
3485static void
2011timers_reschedule (EV_P_ ev_tstamp adjust) 3486timers_reschedule (EV_P_ ev_tstamp adjust)
2012{ 3487{
2013 int i; 3488 int i;
2014 3489
2015 for (i = 0; i < timercnt; ++i) 3490 for (i = 0; i < timercnt; ++i)
… …
2019 ANHE_at_cache (*he); 3494 ANHE_at_cache (*he);
2020 } 3495 }
2021} 3496}
2022 3497
2023/* fetch new monotonic and realtime times from the kernel */ 3498/* fetch new monotonic and realtime times from the kernel */
2024/* also detetc if there was a timejump, and act accordingly */ 3499/* also detect if there was a timejump, and act accordingly */
2025inline_speed void 3500inline_speed void
2026time_update (EV_P_ ev_tstamp max_block) 3501time_update (EV_P_ ev_tstamp max_block)
2027{ 3502{
2028#if EV_USE_MONOTONIC 3503#if EV_USE_MONOTONIC
2029 if (expect_true (have_monotonic)) 3504 if (expect_true (have_monotonic))
… …
2052 * doesn't hurt either as we only do this on time-jumps or 3527 * doesn't hurt either as we only do this on time-jumps or
2053 * in the unlikely event of having been preempted here. 3528 * in the unlikely event of having been preempted here.
2054 */ 3529 */
2055 for (i = 4; --i; ) 3530 for (i = 4; --i; )
2056 { 3531 {
3532 ev_tstamp diff;
2057 rtmn_diff = ev_rt_now - mn_now; 3533 rtmn_diff = ev_rt_now - mn_now;
2058 3534
3535 diff = odiff - rtmn_diff;
3536
2059 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3537 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2060 return; /* all is well */ 3538 return; /* all is well */
2061 3539
2062 ev_rt_now = ev_time (); 3540 ev_rt_now = ev_time ();
2063 mn_now = get_clock (); 3541 mn_now = get_clock ();
2064 now_floor = mn_now; 3542 now_floor = mn_now;
… …
2086 3564
2087 mn_now = ev_rt_now; 3565 mn_now = ev_rt_now;
2088 } 3566 }
2089} 3567}
2090 3568
2091void 3569int
2092ev_loop (EV_P_ int flags) 3570ev_run (EV_P_ int flags)
2093{ 3571{
2094#if EV_MINIMAL < 2 3572#if EV_FEATURE_API
2095 ++loop_depth; 3573 ++loop_depth;
2096#endif 3574#endif
2097 3575
2098 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3576 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2099 3577
2100 loop_done = EVUNLOOP_CANCEL; 3578 loop_done = EVBREAK_CANCEL;
2101 3579
2102 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3580 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2103 3581
2104 do 3582 do
2105 { 3583 {
2106#if EV_VERIFY >= 2 3584#if EV_VERIFY >= 2
2107 ev_loop_verify (EV_A); 3585 ev_verify (EV_A);
2108#endif 3586#endif
2109 3587
2110#ifndef _WIN32 3588#ifndef _WIN32
2111 if (expect_false (curpid)) /* penalise the forking check even more */ 3589 if (expect_false (curpid)) /* penalise the forking check even more */
2112 if (expect_false (getpid () != curpid)) 3590 if (expect_false (getpid () != curpid))
… …
2124 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3602 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2125 EV_INVOKE_PENDING; 3603 EV_INVOKE_PENDING;
2126 } 3604 }
2127#endif 3605#endif
2128 3606
3607#if EV_PREPARE_ENABLE
2129 /* queue prepare watchers (and execute them) */ 3608 /* queue prepare watchers (and execute them) */
2130 if (expect_false (preparecnt)) 3609 if (expect_false (preparecnt))
2131 { 3610 {
2132 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3611 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2133 EV_INVOKE_PENDING; 3612 EV_INVOKE_PENDING;
2134 } 3613 }
3614#endif
2135 3615
2136 if (expect_false (loop_done)) 3616 if (expect_false (loop_done))
2137 break; 3617 break;
2138 3618
2139 /* we might have forked, so reify kernel state if necessary */ 3619 /* we might have forked, so reify kernel state if necessary */
… …
2146 /* calculate blocking time */ 3626 /* calculate blocking time */
2147 { 3627 {
2148 ev_tstamp waittime = 0.; 3628 ev_tstamp waittime = 0.;
2149 ev_tstamp sleeptime = 0.; 3629 ev_tstamp sleeptime = 0.;
2150 3630
3631 /* remember old timestamp for io_blocktime calculation */
3632 ev_tstamp prev_mn_now = mn_now;
3633
3634 /* update time to cancel out callback processing overhead */
3635 time_update (EV_A_ 1e100);
3636
3637 /* from now on, we want a pipe-wake-up */
3638 pipe_write_wanted = 1;
3639
3640 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3641
2151 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3642 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2152 { 3643 {
2153 /* remember old timestamp for io_blocktime calculation */
2154 ev_tstamp prev_mn_now = mn_now;
2155
2156 /* update time to cancel out callback processing overhead */
2157 time_update (EV_A_ 1e100);
2158
2159 waittime = MAX_BLOCKTIME; 3644 waittime = MAX_BLOCKTIME;
2160 3645
2161 if (timercnt) 3646 if (timercnt)
2162 { 3647 {
2163 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3648 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2164 if (waittime > to) waittime = to; 3649 if (waittime > to) waittime = to;
2165 } 3650 }
2166 3651
2167#if EV_PERIODIC_ENABLE 3652#if EV_PERIODIC_ENABLE
2168 if (periodiccnt) 3653 if (periodiccnt)
2169 { 3654 {
2170 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3655 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2171 if (waittime > to) waittime = to; 3656 if (waittime > to) waittime = to;
2172 } 3657 }
2173#endif 3658#endif
2174 3659
2175 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3660 /* don't let timeouts decrease the waittime below timeout_blocktime */
2176 if (expect_false (waittime < timeout_blocktime)) 3661 if (expect_false (waittime < timeout_blocktime))
2177 waittime = timeout_blocktime; 3662 waittime = timeout_blocktime;
3663
3664 /* at this point, we NEED to wait, so we have to ensure */
3665 /* to pass a minimum nonzero value to the backend */
3666 if (expect_false (waittime < backend_mintime))
3667 waittime = backend_mintime;
2178 3668
2179 /* extra check because io_blocktime is commonly 0 */ 3669 /* extra check because io_blocktime is commonly 0 */
2180 if (expect_false (io_blocktime)) 3670 if (expect_false (io_blocktime))
2181 { 3671 {
2182 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3672 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2183 3673
2184 if (sleeptime > waittime - backend_fudge) 3674 if (sleeptime > waittime - backend_mintime)
2185 sleeptime = waittime - backend_fudge; 3675 sleeptime = waittime - backend_mintime;
2186 3676
2187 if (expect_true (sleeptime > 0.)) 3677 if (expect_true (sleeptime > 0.))
2188 { 3678 {
2189 ev_sleep (sleeptime); 3679 ev_sleep (sleeptime);
2190 waittime -= sleeptime; 3680 waittime -= sleeptime;
2191 } 3681 }
2192 } 3682 }
2193 } 3683 }
2194 3684
2195#if EV_MINIMAL < 2 3685#if EV_FEATURE_API
2196 ++loop_count; 3686 ++loop_count;
2197#endif 3687#endif
2198 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3688 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2199 backend_poll (EV_A_ waittime); 3689 backend_poll (EV_A_ waittime);
2200 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3690 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3691
3692 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3693
3694 ECB_MEMORY_FENCE_ACQUIRE;
3695 if (pipe_write_skipped)
3696 {
3697 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3698 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3699 }
3700
2201 3701
2202 /* update ev_rt_now, do magic */ 3702 /* update ev_rt_now, do magic */
2203 time_update (EV_A_ waittime + sleeptime); 3703 time_update (EV_A_ waittime + sleeptime);
2204 } 3704 }
2205 3705
… …
2212#if EV_IDLE_ENABLE 3712#if EV_IDLE_ENABLE
2213 /* queue idle watchers unless other events are pending */ 3713 /* queue idle watchers unless other events are pending */
2214 idle_reify (EV_A); 3714 idle_reify (EV_A);
2215#endif 3715#endif
2216 3716
3717#if EV_CHECK_ENABLE
2217 /* queue check watchers, to be executed first */ 3718 /* queue check watchers, to be executed first */
2218 if (expect_false (checkcnt)) 3719 if (expect_false (checkcnt))
2219 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3720 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3721#endif
2220 3722
2221 EV_INVOKE_PENDING; 3723 EV_INVOKE_PENDING;
2222 } 3724 }
2223 while (expect_true ( 3725 while (expect_true (
2224 activecnt 3726 activecnt
2225 && !loop_done 3727 && !loop_done
2226 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3728 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2227 )); 3729 ));
2228 3730
2229 if (loop_done == EVUNLOOP_ONE) 3731 if (loop_done == EVBREAK_ONE)
2230 loop_done = EVUNLOOP_CANCEL; 3732 loop_done = EVBREAK_CANCEL;
2231 3733
2232#if EV_MINIMAL < 2 3734#if EV_FEATURE_API
2233 --loop_depth; 3735 --loop_depth;
2234#endif 3736#endif
2235}
2236 3737
3738 return activecnt;
3739}
3740
2237void 3741void
2238ev_unloop (EV_P_ int how) 3742ev_break (EV_P_ int how) EV_THROW
2239{ 3743{
2240 loop_done = how; 3744 loop_done = how;
2241} 3745}
2242 3746
2243void 3747void
2244ev_ref (EV_P) 3748ev_ref (EV_P) EV_THROW
2245{ 3749{
2246 ++activecnt; 3750 ++activecnt;
2247} 3751}
2248 3752
2249void 3753void
2250ev_unref (EV_P) 3754ev_unref (EV_P) EV_THROW
2251{ 3755{
2252 --activecnt; 3756 --activecnt;
2253} 3757}
2254 3758
2255void 3759void
2256ev_now_update (EV_P) 3760ev_now_update (EV_P) EV_THROW
2257{ 3761{
2258 time_update (EV_A_ 1e100); 3762 time_update (EV_A_ 1e100);
2259} 3763}
2260 3764
2261void 3765void
2262ev_suspend (EV_P) 3766ev_suspend (EV_P) EV_THROW
2263{ 3767{
2264 ev_now_update (EV_A); 3768 ev_now_update (EV_A);
2265} 3769}
2266 3770
2267void 3771void
2268ev_resume (EV_P) 3772ev_resume (EV_P) EV_THROW
2269{ 3773{
2270 ev_tstamp mn_prev = mn_now; 3774 ev_tstamp mn_prev = mn_now;
2271 3775
2272 ev_now_update (EV_A); 3776 ev_now_update (EV_A);
2273 timers_reschedule (EV_A_ mn_now - mn_prev); 3777 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2290inline_size void 3794inline_size void
2291wlist_del (WL *head, WL elem) 3795wlist_del (WL *head, WL elem)
2292{ 3796{
2293 while (*head) 3797 while (*head)
2294 { 3798 {
2295 if (*head == elem) 3799 if (expect_true (*head == elem))
2296 { 3800 {
2297 *head = elem->next; 3801 *head = elem->next;
2298 return; 3802 break;
2299 } 3803 }
2300 3804
2301 head = &(*head)->next; 3805 head = &(*head)->next;
2302 } 3806 }
2303} 3807}
… …
2312 w->pending = 0; 3816 w->pending = 0;
2313 } 3817 }
2314} 3818}
2315 3819
2316int 3820int
2317ev_clear_pending (EV_P_ void *w) 3821ev_clear_pending (EV_P_ void *w) EV_THROW
2318{ 3822{
2319 W w_ = (W)w; 3823 W w_ = (W)w;
2320 int pending = w_->pending; 3824 int pending = w_->pending;
2321 3825
2322 if (expect_true (pending)) 3826 if (expect_true (pending))
… …
2354 w->active = 0; 3858 w->active = 0;
2355} 3859}
2356 3860
2357/*****************************************************************************/ 3861/*****************************************************************************/
2358 3862
2359void noinline 3863noinline
3864void
2360ev_io_start (EV_P_ ev_io *w) 3865ev_io_start (EV_P_ ev_io *w) EV_THROW
2361{ 3866{
2362 int fd = w->fd; 3867 int fd = w->fd;
2363 3868
2364 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
2365 return; 3870 return;
2366 3871
2367 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3872 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2368 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3873 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2369 3874
2370 EV_FREQUENT_CHECK; 3875 EV_FREQUENT_CHECK;
2371 3876
2372 ev_start (EV_A_ (W)w, 1); 3877 ev_start (EV_A_ (W)w, 1);
2373 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3878 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2374 wlist_add (&anfds[fd].head, (WL)w); 3879 wlist_add (&anfds[fd].head, (WL)w);
2375 3880
3881 /* common bug, apparently */
3882 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3883
2376 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3884 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2377 w->events &= ~EV__IOFDSET; 3885 w->events &= ~EV__IOFDSET;
2378 3886
2379 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
2380} 3888}
2381 3889
2382void noinline 3890noinline
3891void
2383ev_io_stop (EV_P_ ev_io *w) 3892ev_io_stop (EV_P_ ev_io *w) EV_THROW
2384{ 3893{
2385 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
2386 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
2387 return; 3896 return;
2388 3897
… …
2391 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
2392 3901
2393 wlist_del (&anfds[w->fd].head, (WL)w); 3902 wlist_del (&anfds[w->fd].head, (WL)w);
2394 ev_stop (EV_A_ (W)w); 3903 ev_stop (EV_A_ (W)w);
2395 3904
2396 fd_change (EV_A_ w->fd, 1); 3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2397 3906
2398 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
2399} 3908}
2400 3909
2401void noinline 3910noinline
3911void
2402ev_timer_start (EV_P_ ev_timer *w) 3912ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2403{ 3913{
2404 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
2405 return; 3915 return;
2406 3916
2407 ev_at (w) += mn_now; 3917 ev_at (w) += mn_now;
… …
2420 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
2421 3931
2422 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3932 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2423} 3933}
2424 3934
2425void noinline 3935noinline
3936void
2426ev_timer_stop (EV_P_ ev_timer *w) 3937ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2427{ 3938{
2428 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
2429 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
2430 return; 3941 return;
2431 3942
… …
2443 timers [active] = timers [timercnt + HEAP0]; 3954 timers [active] = timers [timercnt + HEAP0];
2444 adjustheap (timers, timercnt, active); 3955 adjustheap (timers, timercnt, active);
2445 } 3956 }
2446 } 3957 }
2447 3958
2448 EV_FREQUENT_CHECK;
2449
2450 ev_at (w) -= mn_now; 3959 ev_at (w) -= mn_now;
2451 3960
2452 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
2453}
2454 3962
3963 EV_FREQUENT_CHECK;
3964}
3965
2455void noinline 3966noinline
3967void
2456ev_timer_again (EV_P_ ev_timer *w) 3968ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2457{ 3969{
2458 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3971
3972 clear_pending (EV_A_ (W)w);
2459 3973
2460 if (ev_is_active (w)) 3974 if (ev_is_active (w))
2461 { 3975 {
2462 if (w->repeat) 3976 if (w->repeat)
2463 { 3977 {
… …
2475 } 3989 }
2476 3990
2477 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
2478} 3992}
2479 3993
3994ev_tstamp
3995ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3996{
3997 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3998}
3999
2480#if EV_PERIODIC_ENABLE 4000#if EV_PERIODIC_ENABLE
2481void noinline 4001noinline
4002void
2482ev_periodic_start (EV_P_ ev_periodic *w) 4003ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2483{ 4004{
2484 if (expect_false (ev_is_active (w))) 4005 if (expect_false (ev_is_active (w)))
2485 return; 4006 return;
2486 4007
2487 if (w->reschedule_cb) 4008 if (w->reschedule_cb)
2488 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4009 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2489 else if (w->interval) 4010 else if (w->interval)
2490 { 4011 {
2491 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4012 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2492 /* this formula differs from the one in periodic_reify because we do not always round up */ 4013 periodic_recalc (EV_A_ w);
2493 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2494 } 4014 }
2495 else 4015 else
2496 ev_at (w) = w->offset; 4016 ev_at (w) = w->offset;
2497 4017
2498 EV_FREQUENT_CHECK; 4018 EV_FREQUENT_CHECK;
… …
2507 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
2508 4028
2509 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4029 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2510} 4030}
2511 4031
2512void noinline 4032noinline
4033void
2513ev_periodic_stop (EV_P_ ev_periodic *w) 4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2514{ 4035{
2515 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
2517 return; 4038 return;
2518 4039
… …
2530 periodics [active] = periodics [periodiccnt + HEAP0]; 4051 periodics [active] = periodics [periodiccnt + HEAP0];
2531 adjustheap (periodics, periodiccnt, active); 4052 adjustheap (periodics, periodiccnt, active);
2532 } 4053 }
2533 } 4054 }
2534 4055
2535 EV_FREQUENT_CHECK;
2536
2537 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
2538}
2539 4057
4058 EV_FREQUENT_CHECK;
4059}
4060
2540void noinline 4061noinline
4062void
2541ev_periodic_again (EV_P_ ev_periodic *w) 4063ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2542{ 4064{
2543 /* TODO: use adjustheap and recalculation */ 4065 /* TODO: use adjustheap and recalculation */
2544 ev_periodic_stop (EV_A_ w); 4066 ev_periodic_stop (EV_A_ w);
2545 ev_periodic_start (EV_A_ w); 4067 ev_periodic_start (EV_A_ w);
2546} 4068}
… …
2548 4070
2549#ifndef SA_RESTART 4071#ifndef SA_RESTART
2550# define SA_RESTART 0 4072# define SA_RESTART 0
2551#endif 4073#endif
2552 4074
4075#if EV_SIGNAL_ENABLE
4076
2553void noinline 4077noinline
4078void
2554ev_signal_start (EV_P_ ev_signal *w) 4079ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2555{ 4080{
2556#if EV_MULTIPLICITY
2557 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2558#endif
2559 if (expect_false (ev_is_active (w))) 4081 if (expect_false (ev_is_active (w)))
2560 return; 4082 return;
2561 4083
2562 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4084 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2563 4085
2564 evpipe_init (EV_A); 4086#if EV_MULTIPLICITY
4087 assert (("libev: a signal must not be attached to two different loops",
4088 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2565 4089
2566 EV_FREQUENT_CHECK; 4090 signals [w->signum - 1].loop = EV_A;
4091 ECB_MEMORY_FENCE_RELEASE;
4092#endif
2567 4093
4094 EV_FREQUENT_CHECK;
4095
4096#if EV_USE_SIGNALFD
4097 if (sigfd == -2)
2568 { 4098 {
2569#ifndef _WIN32 4099 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2570 sigset_t full, prev; 4100 if (sigfd < 0 && errno == EINVAL)
2571 sigfillset (&full); 4101 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2572 sigprocmask (SIG_SETMASK, &full, &prev);
2573#endif
2574 4102
2575 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4103 if (sigfd >= 0)
4104 {
4105 fd_intern (sigfd); /* doing it twice will not hurt */
2576 4106
2577#ifndef _WIN32 4107 sigemptyset (&sigfd_set);
2578 sigprocmask (SIG_SETMASK, &prev, 0); 4108
2579#endif 4109 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4110 ev_set_priority (&sigfd_w, EV_MAXPRI);
4111 ev_io_start (EV_A_ &sigfd_w);
4112 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4113 }
2580 } 4114 }
4115
4116 if (sigfd >= 0)
4117 {
4118 /* TODO: check .head */
4119 sigaddset (&sigfd_set, w->signum);
4120 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4121
4122 signalfd (sigfd, &sigfd_set, 0);
4123 }
4124#endif
2581 4125
2582 ev_start (EV_A_ (W)w, 1); 4126 ev_start (EV_A_ (W)w, 1);
2583 wlist_add (&signals [w->signum - 1].head, (WL)w); 4127 wlist_add (&signals [w->signum - 1].head, (WL)w);
2584 4128
2585 if (!((WL)w)->next) 4129 if (!((WL)w)->next)
4130# if EV_USE_SIGNALFD
4131 if (sigfd < 0) /*TODO*/
4132# endif
2586 { 4133 {
2587#if _WIN32 4134# ifdef _WIN32
4135 evpipe_init (EV_A);
4136
2588 signal (w->signum, ev_sighandler); 4137 signal (w->signum, ev_sighandler);
2589#else 4138# else
2590 struct sigaction sa = { }; 4139 struct sigaction sa;
4140
4141 evpipe_init (EV_A);
4142
2591 sa.sa_handler = ev_sighandler; 4143 sa.sa_handler = ev_sighandler;
2592 sigfillset (&sa.sa_mask); 4144 sigfillset (&sa.sa_mask);
2593 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4145 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2594 sigaction (w->signum, &sa, 0); 4146 sigaction (w->signum, &sa, 0);
4147
4148 if (origflags & EVFLAG_NOSIGMASK)
4149 {
4150 sigemptyset (&sa.sa_mask);
4151 sigaddset (&sa.sa_mask, w->signum);
4152 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4153 }
2595#endif 4154#endif
2596 } 4155 }
2597 4156
2598 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
2599} 4158}
2600 4159
2601void noinline 4160noinline
4161void
2602ev_signal_stop (EV_P_ ev_signal *w) 4162ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2603{ 4163{
2604 clear_pending (EV_A_ (W)w); 4164 clear_pending (EV_A_ (W)w);
2605 if (expect_false (!ev_is_active (w))) 4165 if (expect_false (!ev_is_active (w)))
2606 return; 4166 return;
2607 4167
… …
2609 4169
2610 wlist_del (&signals [w->signum - 1].head, (WL)w); 4170 wlist_del (&signals [w->signum - 1].head, (WL)w);
2611 ev_stop (EV_A_ (W)w); 4171 ev_stop (EV_A_ (W)w);
2612 4172
2613 if (!signals [w->signum - 1].head) 4173 if (!signals [w->signum - 1].head)
4174 {
4175#if EV_MULTIPLICITY
4176 signals [w->signum - 1].loop = 0; /* unattach from signal */
4177#endif
4178#if EV_USE_SIGNALFD
4179 if (sigfd >= 0)
4180 {
4181 sigset_t ss;
4182
4183 sigemptyset (&ss);
4184 sigaddset (&ss, w->signum);
4185 sigdelset (&sigfd_set, w->signum);
4186
4187 signalfd (sigfd, &sigfd_set, 0);
4188 sigprocmask (SIG_UNBLOCK, &ss, 0);
4189 }
4190 else
4191#endif
2614 signal (w->signum, SIG_DFL); 4192 signal (w->signum, SIG_DFL);
4193 }
2615 4194
2616 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
2617} 4196}
2618 4197
4198#endif
4199
4200#if EV_CHILD_ENABLE
4201
2619void 4202void
2620ev_child_start (EV_P_ ev_child *w) 4203ev_child_start (EV_P_ ev_child *w) EV_THROW
2621{ 4204{
2622#if EV_MULTIPLICITY 4205#if EV_MULTIPLICITY
2623 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4206 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2624#endif 4207#endif
2625 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
2626 return; 4209 return;
2627 4210
2628 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
2629 4212
2630 ev_start (EV_A_ (W)w, 1); 4213 ev_start (EV_A_ (W)w, 1);
2631 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4214 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2632 4215
2633 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
2634} 4217}
2635 4218
2636void 4219void
2637ev_child_stop (EV_P_ ev_child *w) 4220ev_child_stop (EV_P_ ev_child *w) EV_THROW
2638{ 4221{
2639 clear_pending (EV_A_ (W)w); 4222 clear_pending (EV_A_ (W)w);
2640 if (expect_false (!ev_is_active (w))) 4223 if (expect_false (!ev_is_active (w)))
2641 return; 4224 return;
2642 4225
2643 EV_FREQUENT_CHECK; 4226 EV_FREQUENT_CHECK;
2644 4227
2645 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4228 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2646 ev_stop (EV_A_ (W)w); 4229 ev_stop (EV_A_ (W)w);
2647 4230
2648 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
2649} 4232}
4233
4234#endif
2650 4235
2651#if EV_STAT_ENABLE 4236#if EV_STAT_ENABLE
2652 4237
2653# ifdef _WIN32 4238# ifdef _WIN32
2654# undef lstat 4239# undef lstat
… …
2657 4242
2658#define DEF_STAT_INTERVAL 5.0074891 4243#define DEF_STAT_INTERVAL 5.0074891
2659#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2660#define MIN_STAT_INTERVAL 0.1074891 4245#define MIN_STAT_INTERVAL 0.1074891
2661 4246
2662static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4247noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2663 4248
2664#if EV_USE_INOTIFY 4249#if EV_USE_INOTIFY
2665# define EV_INOTIFY_BUFSIZE 8192
2666 4250
2667static void noinline 4251/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4252# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4253
4254noinline
4255static void
2668infy_add (EV_P_ ev_stat *w) 4256infy_add (EV_P_ ev_stat *w)
2669{ 4257{
2670 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4258 w->wd = inotify_add_watch (fs_fd, w->path,
4259 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4260 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4261 | IN_DONT_FOLLOW | IN_MASK_ADD);
2671 4262
2672 if (w->wd < 0) 4263 if (w->wd >= 0)
4264 {
4265 struct statfs sfs;
4266
4267 /* now local changes will be tracked by inotify, but remote changes won't */
4268 /* unless the filesystem is known to be local, we therefore still poll */
4269 /* also do poll on <2.6.25, but with normal frequency */
4270
4271 if (!fs_2625)
4272 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4273 else if (!statfs (w->path, &sfs)
4274 && (sfs.f_type == 0x1373 /* devfs */
4275 || sfs.f_type == 0x4006 /* fat */
4276 || sfs.f_type == 0x4d44 /* msdos */
4277 || sfs.f_type == 0xEF53 /* ext2/3 */
4278 || sfs.f_type == 0x72b6 /* jffs2 */
4279 || sfs.f_type == 0x858458f6 /* ramfs */
4280 || sfs.f_type == 0x5346544e /* ntfs */
4281 || sfs.f_type == 0x3153464a /* jfs */
4282 || sfs.f_type == 0x9123683e /* btrfs */
4283 || sfs.f_type == 0x52654973 /* reiser3 */
4284 || sfs.f_type == 0x01021994 /* tmpfs */
4285 || sfs.f_type == 0x58465342 /* xfs */))
4286 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4287 else
4288 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2673 { 4289 }
4290 else
4291 {
4292 /* can't use inotify, continue to stat */
2674 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4293 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2675 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2676 4294
2677 /* monitor some parent directory for speedup hints */ 4295 /* if path is not there, monitor some parent directory for speedup hints */
2678 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4296 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2679 /* but an efficiency issue only */ 4297 /* but an efficiency issue only */
2680 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4298 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2681 { 4299 {
2682 char path [4096]; 4300 char path [4096];
… …
2692 if (!pend || pend == path) 4310 if (!pend || pend == path)
2693 break; 4311 break;
2694 4312
2695 *pend = 0; 4313 *pend = 0;
2696 w->wd = inotify_add_watch (fs_fd, path, mask); 4314 w->wd = inotify_add_watch (fs_fd, path, mask);
2697 } 4315 }
2698 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4316 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2699 } 4317 }
2700 } 4318 }
2701 4319
2702 if (w->wd >= 0) 4320 if (w->wd >= 0)
2703 {
2704 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4321 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2705 4322
2706 /* now local changes will be tracked by inotify, but remote changes won't */ 4323 /* now re-arm timer, if required */
2707 /* unless the filesystem it known to be local, we therefore still poll */ 4324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2708 /* also do poll on <2.6.25, but with normal frequency */
2709 struct statfs sfs;
2710
2711 if (fs_2625 && !statfs (w->path, &sfs))
2712 if (sfs.f_type == 0x1373 /* devfs */
2713 || sfs.f_type == 0xEF53 /* ext2/3 */
2714 || sfs.f_type == 0x3153464a /* jfs */
2715 || sfs.f_type == 0x52654973 /* reiser3 */
2716 || sfs.f_type == 0x01021994 /* tempfs */
2717 || sfs.f_type == 0x58465342 /* xfs */)
2718 return;
2719
2720 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2721 ev_timer_again (EV_A_ &w->timer); 4325 ev_timer_again (EV_A_ &w->timer);
2722 } 4326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2723} 4327}
2724 4328
2725static void noinline 4329noinline
4330static void
2726infy_del (EV_P_ ev_stat *w) 4331infy_del (EV_P_ ev_stat *w)
2727{ 4332{
2728 int slot; 4333 int slot;
2729 int wd = w->wd; 4334 int wd = w->wd;
2730 4335
2731 if (wd < 0) 4336 if (wd < 0)
2732 return; 4337 return;
2733 4338
2734 w->wd = -2; 4339 w->wd = -2;
2735 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4340 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2736 wlist_del (&fs_hash [slot].head, (WL)w); 4341 wlist_del (&fs_hash [slot].head, (WL)w);
2737 4342
2738 /* remove this watcher, if others are watching it, they will rearm */ 4343 /* remove this watcher, if others are watching it, they will rearm */
2739 inotify_rm_watch (fs_fd, wd); 4344 inotify_rm_watch (fs_fd, wd);
2740} 4345}
2741 4346
2742static void noinline 4347noinline
4348static void
2743infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2744{ 4350{
2745 if (slot < 0) 4351 if (slot < 0)
2746 /* overflow, need to check for all hash slots */ 4352 /* overflow, need to check for all hash slots */
2747 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4353 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2748 infy_wd (EV_A_ slot, wd, ev); 4354 infy_wd (EV_A_ slot, wd, ev);
2749 else 4355 else
2750 { 4356 {
2751 WL w_; 4357 WL w_;
2752 4358
2753 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4359 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2754 { 4360 {
2755 ev_stat *w = (ev_stat *)w_; 4361 ev_stat *w = (ev_stat *)w_;
2756 w_ = w_->next; /* lets us remove this watcher and all before it */ 4362 w_ = w_->next; /* lets us remove this watcher and all before it */
2757 4363
2758 if (w->wd == wd || wd == -1) 4364 if (w->wd == wd || wd == -1)
2759 { 4365 {
2760 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4366 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2761 { 4367 {
2762 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4368 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2763 w->wd = -1; 4369 w->wd = -1;
2764 infy_add (EV_A_ w); /* re-add, no matter what */ 4370 infy_add (EV_A_ w); /* re-add, no matter what */
2765 } 4371 }
2766 4372
2767 stat_timer_cb (EV_A_ &w->timer, 0); 4373 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2772 4378
2773static void 4379static void
2774infy_cb (EV_P_ ev_io *w, int revents) 4380infy_cb (EV_P_ ev_io *w, int revents)
2775{ 4381{
2776 char buf [EV_INOTIFY_BUFSIZE]; 4382 char buf [EV_INOTIFY_BUFSIZE];
2777 struct inotify_event *ev = (struct inotify_event *)buf;
2778 int ofs; 4383 int ofs;
2779 int len = read (fs_fd, buf, sizeof (buf)); 4384 int len = read (fs_fd, buf, sizeof (buf));
2780 4385
2781 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4386 for (ofs = 0; ofs < len; )
4387 {
4388 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2782 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4389 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4390 ofs += sizeof (struct inotify_event) + ev->len;
4391 }
2783} 4392}
2784 4393
2785inline_size void 4394inline_size ecb_cold
4395void
2786check_2625 (EV_P) 4396ev_check_2625 (EV_P)
2787{ 4397{
2788 /* kernels < 2.6.25 are borked 4398 /* kernels < 2.6.25 are borked
2789 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4399 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2790 */ 4400 */
2791 struct utsname buf; 4401 if (ev_linux_version () < 0x020619)
2792 int major, minor, micro;
2793
2794 if (uname (&buf))
2795 return; 4402 return;
2796 4403
2797 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2798 return;
2799
2800 if (major < 2
2801 || (major == 2 && minor < 6)
2802 || (major == 2 && minor == 6 && micro < 25))
2803 return;
2804
2805 fs_2625 = 1; 4404 fs_2625 = 1;
4405}
4406
4407inline_size int
4408infy_newfd (void)
4409{
4410#if defined IN_CLOEXEC && defined IN_NONBLOCK
4411 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4412 if (fd >= 0)
4413 return fd;
4414#endif
4415 return inotify_init ();
2806} 4416}
2807 4417
2808inline_size void 4418inline_size void
2809infy_init (EV_P) 4419infy_init (EV_P)
2810{ 4420{
2811 if (fs_fd != -2) 4421 if (fs_fd != -2)
2812 return; 4422 return;
2813 4423
2814 fs_fd = -1; 4424 fs_fd = -1;
2815 4425
2816 check_2625 (EV_A); 4426 ev_check_2625 (EV_A);
2817 4427
2818 fs_fd = inotify_init (); 4428 fs_fd = infy_newfd ();
2819 4429
2820 if (fs_fd >= 0) 4430 if (fs_fd >= 0)
2821 { 4431 {
4432 fd_intern (fs_fd);
2822 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4433 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2823 ev_set_priority (&fs_w, EV_MAXPRI); 4434 ev_set_priority (&fs_w, EV_MAXPRI);
2824 ev_io_start (EV_A_ &fs_w); 4435 ev_io_start (EV_A_ &fs_w);
4436 ev_unref (EV_A);
2825 } 4437 }
2826} 4438}
2827 4439
2828inline_size void 4440inline_size void
2829infy_fork (EV_P) 4441infy_fork (EV_P)
… …
2831 int slot; 4443 int slot;
2832 4444
2833 if (fs_fd < 0) 4445 if (fs_fd < 0)
2834 return; 4446 return;
2835 4447
4448 ev_ref (EV_A);
4449 ev_io_stop (EV_A_ &fs_w);
2836 close (fs_fd); 4450 close (fs_fd);
2837 fs_fd = inotify_init (); 4451 fs_fd = infy_newfd ();
2838 4452
4453 if (fs_fd >= 0)
4454 {
4455 fd_intern (fs_fd);
4456 ev_io_set (&fs_w, fs_fd, EV_READ);
4457 ev_io_start (EV_A_ &fs_w);
4458 ev_unref (EV_A);
4459 }
4460
2839 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4461 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2840 { 4462 {
2841 WL w_ = fs_hash [slot].head; 4463 WL w_ = fs_hash [slot].head;
2842 fs_hash [slot].head = 0; 4464 fs_hash [slot].head = 0;
2843 4465
2844 while (w_) 4466 while (w_)
… …
2849 w->wd = -1; 4471 w->wd = -1;
2850 4472
2851 if (fs_fd >= 0) 4473 if (fs_fd >= 0)
2852 infy_add (EV_A_ w); /* re-add, no matter what */ 4474 infy_add (EV_A_ w); /* re-add, no matter what */
2853 else 4475 else
4476 {
4477 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4478 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2854 ev_timer_again (EV_A_ &w->timer); 4479 ev_timer_again (EV_A_ &w->timer);
4480 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4481 }
2855 } 4482 }
2856 } 4483 }
2857} 4484}
2858 4485
2859#endif 4486#endif
… …
2863#else 4490#else
2864# define EV_LSTAT(p,b) lstat (p, b) 4491# define EV_LSTAT(p,b) lstat (p, b)
2865#endif 4492#endif
2866 4493
2867void 4494void
2868ev_stat_stat (EV_P_ ev_stat *w) 4495ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2869{ 4496{
2870 if (lstat (w->path, &w->attr) < 0) 4497 if (lstat (w->path, &w->attr) < 0)
2871 w->attr.st_nlink = 0; 4498 w->attr.st_nlink = 0;
2872 else if (!w->attr.st_nlink) 4499 else if (!w->attr.st_nlink)
2873 w->attr.st_nlink = 1; 4500 w->attr.st_nlink = 1;
2874} 4501}
2875 4502
2876static void noinline 4503noinline
4504static void
2877stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4505stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2878{ 4506{
2879 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2880 4508
2881 /* we copy this here each the time so that */ 4509 ev_statdata prev = w->attr;
2882 /* prev has the old value when the callback gets invoked */
2883 w->prev = w->attr;
2884 ev_stat_stat (EV_A_ w); 4510 ev_stat_stat (EV_A_ w);
2885 4511
2886 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4512 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2887 if ( 4513 if (
2888 w->prev.st_dev != w->attr.st_dev 4514 prev.st_dev != w->attr.st_dev
2889 || w->prev.st_ino != w->attr.st_ino 4515 || prev.st_ino != w->attr.st_ino
2890 || w->prev.st_mode != w->attr.st_mode 4516 || prev.st_mode != w->attr.st_mode
2891 || w->prev.st_nlink != w->attr.st_nlink 4517 || prev.st_nlink != w->attr.st_nlink
2892 || w->prev.st_uid != w->attr.st_uid 4518 || prev.st_uid != w->attr.st_uid
2893 || w->prev.st_gid != w->attr.st_gid 4519 || prev.st_gid != w->attr.st_gid
2894 || w->prev.st_rdev != w->attr.st_rdev 4520 || prev.st_rdev != w->attr.st_rdev
2895 || w->prev.st_size != w->attr.st_size 4521 || prev.st_size != w->attr.st_size
2896 || w->prev.st_atime != w->attr.st_atime 4522 || prev.st_atime != w->attr.st_atime
2897 || w->prev.st_mtime != w->attr.st_mtime 4523 || prev.st_mtime != w->attr.st_mtime
2898 || w->prev.st_ctime != w->attr.st_ctime 4524 || prev.st_ctime != w->attr.st_ctime
2899 ) { 4525 ) {
4526 /* we only update w->prev on actual differences */
4527 /* in case we test more often than invoke the callback, */
4528 /* to ensure that prev is always different to attr */
4529 w->prev = prev;
4530
2900 #if EV_USE_INOTIFY 4531 #if EV_USE_INOTIFY
2901 if (fs_fd >= 0) 4532 if (fs_fd >= 0)
2902 { 4533 {
2903 infy_del (EV_A_ w); 4534 infy_del (EV_A_ w);
2904 infy_add (EV_A_ w); 4535 infy_add (EV_A_ w);
… …
2909 ev_feed_event (EV_A_ w, EV_STAT); 4540 ev_feed_event (EV_A_ w, EV_STAT);
2910 } 4541 }
2911} 4542}
2912 4543
2913void 4544void
2914ev_stat_start (EV_P_ ev_stat *w) 4545ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2915{ 4546{
2916 if (expect_false (ev_is_active (w))) 4547 if (expect_false (ev_is_active (w)))
2917 return; 4548 return;
2918 4549
2919 ev_stat_stat (EV_A_ w); 4550 ev_stat_stat (EV_A_ w);
… …
2929 4560
2930 if (fs_fd >= 0) 4561 if (fs_fd >= 0)
2931 infy_add (EV_A_ w); 4562 infy_add (EV_A_ w);
2932 else 4563 else
2933#endif 4564#endif
4565 {
2934 ev_timer_again (EV_A_ &w->timer); 4566 ev_timer_again (EV_A_ &w->timer);
4567 ev_unref (EV_A);
4568 }
2935 4569
2936 ev_start (EV_A_ (W)w, 1); 4570 ev_start (EV_A_ (W)w, 1);
2937 4571
2938 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
2939} 4573}
2940 4574
2941void 4575void
2942ev_stat_stop (EV_P_ ev_stat *w) 4576ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2943{ 4577{
2944 clear_pending (EV_A_ (W)w); 4578 clear_pending (EV_A_ (W)w);
2945 if (expect_false (!ev_is_active (w))) 4579 if (expect_false (!ev_is_active (w)))
2946 return; 4580 return;
2947 4581
2948 EV_FREQUENT_CHECK; 4582 EV_FREQUENT_CHECK;
2949 4583
2950#if EV_USE_INOTIFY 4584#if EV_USE_INOTIFY
2951 infy_del (EV_A_ w); 4585 infy_del (EV_A_ w);
2952#endif 4586#endif
4587
4588 if (ev_is_active (&w->timer))
4589 {
4590 ev_ref (EV_A);
2953 ev_timer_stop (EV_A_ &w->timer); 4591 ev_timer_stop (EV_A_ &w->timer);
4592 }
2954 4593
2955 ev_stop (EV_A_ (W)w); 4594 ev_stop (EV_A_ (W)w);
2956 4595
2957 EV_FREQUENT_CHECK; 4596 EV_FREQUENT_CHECK;
2958} 4597}
2959#endif 4598#endif
2960 4599
2961#if EV_IDLE_ENABLE 4600#if EV_IDLE_ENABLE
2962void 4601void
2963ev_idle_start (EV_P_ ev_idle *w) 4602ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2964{ 4603{
2965 if (expect_false (ev_is_active (w))) 4604 if (expect_false (ev_is_active (w)))
2966 return; 4605 return;
2967 4606
2968 pri_adjust (EV_A_ (W)w); 4607 pri_adjust (EV_A_ (W)w);
… …
2981 4620
2982 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
2983} 4622}
2984 4623
2985void 4624void
2986ev_idle_stop (EV_P_ ev_idle *w) 4625ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2987{ 4626{
2988 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
2989 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
2990 return; 4629 return;
2991 4630
… …
3003 4642
3004 EV_FREQUENT_CHECK; 4643 EV_FREQUENT_CHECK;
3005} 4644}
3006#endif 4645#endif
3007 4646
4647#if EV_PREPARE_ENABLE
3008void 4648void
3009ev_prepare_start (EV_P_ ev_prepare *w) 4649ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3010{ 4650{
3011 if (expect_false (ev_is_active (w))) 4651 if (expect_false (ev_is_active (w)))
3012 return; 4652 return;
3013 4653
3014 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
… …
3019 4659
3020 EV_FREQUENT_CHECK; 4660 EV_FREQUENT_CHECK;
3021} 4661}
3022 4662
3023void 4663void
3024ev_prepare_stop (EV_P_ ev_prepare *w) 4664ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3025{ 4665{
3026 clear_pending (EV_A_ (W)w); 4666 clear_pending (EV_A_ (W)w);
3027 if (expect_false (!ev_is_active (w))) 4667 if (expect_false (!ev_is_active (w)))
3028 return; 4668 return;
3029 4669
… …
3038 4678
3039 ev_stop (EV_A_ (W)w); 4679 ev_stop (EV_A_ (W)w);
3040 4680
3041 EV_FREQUENT_CHECK; 4681 EV_FREQUENT_CHECK;
3042} 4682}
4683#endif
3043 4684
4685#if EV_CHECK_ENABLE
3044void 4686void
3045ev_check_start (EV_P_ ev_check *w) 4687ev_check_start (EV_P_ ev_check *w) EV_THROW
3046{ 4688{
3047 if (expect_false (ev_is_active (w))) 4689 if (expect_false (ev_is_active (w)))
3048 return; 4690 return;
3049 4691
3050 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
… …
3055 4697
3056 EV_FREQUENT_CHECK; 4698 EV_FREQUENT_CHECK;
3057} 4699}
3058 4700
3059void 4701void
3060ev_check_stop (EV_P_ ev_check *w) 4702ev_check_stop (EV_P_ ev_check *w) EV_THROW
3061{ 4703{
3062 clear_pending (EV_A_ (W)w); 4704 clear_pending (EV_A_ (W)w);
3063 if (expect_false (!ev_is_active (w))) 4705 if (expect_false (!ev_is_active (w)))
3064 return; 4706 return;
3065 4707
… …
3074 4716
3075 ev_stop (EV_A_ (W)w); 4717 ev_stop (EV_A_ (W)w);
3076 4718
3077 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
3078} 4720}
4721#endif
3079 4722
3080#if EV_EMBED_ENABLE 4723#if EV_EMBED_ENABLE
3081void noinline 4724noinline
4725void
3082ev_embed_sweep (EV_P_ ev_embed *w) 4726ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3083{ 4727{
3084 ev_loop (w->other, EVLOOP_NONBLOCK); 4728 ev_run (w->other, EVRUN_NOWAIT);
3085} 4729}
3086 4730
3087static void 4731static void
3088embed_io_cb (EV_P_ ev_io *io, int revents) 4732embed_io_cb (EV_P_ ev_io *io, int revents)
3089{ 4733{
3090 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4734 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3091 4735
3092 if (ev_cb (w)) 4736 if (ev_cb (w))
3093 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4737 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3094 else 4738 else
3095 ev_loop (w->other, EVLOOP_NONBLOCK); 4739 ev_run (w->other, EVRUN_NOWAIT);
3096} 4740}
3097 4741
3098static void 4742static void
3099embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4743embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3100{ 4744{
3101 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4745 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3102 4746
3103 { 4747 {
3104 struct ev_loop *loop = w->other; 4748 EV_P = w->other;
3105 4749
3106 while (fdchangecnt) 4750 while (fdchangecnt)
3107 { 4751 {
3108 fd_reify (EV_A); 4752 fd_reify (EV_A);
3109 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4753 ev_run (EV_A_ EVRUN_NOWAIT);
3110 } 4754 }
3111 } 4755 }
3112} 4756}
3113 4757
3114static void 4758static void
… …
3117 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4761 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3118 4762
3119 ev_embed_stop (EV_A_ w); 4763 ev_embed_stop (EV_A_ w);
3120 4764
3121 { 4765 {
3122 struct ev_loop *loop = w->other; 4766 EV_P = w->other;
3123 4767
3124 ev_loop_fork (EV_A); 4768 ev_loop_fork (EV_A);
3125 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4769 ev_run (EV_A_ EVRUN_NOWAIT);
3126 } 4770 }
3127 4771
3128 ev_embed_start (EV_A_ w); 4772 ev_embed_start (EV_A_ w);
3129} 4773}
3130 4774
… …
3135 ev_idle_stop (EV_A_ idle); 4779 ev_idle_stop (EV_A_ idle);
3136} 4780}
3137#endif 4781#endif
3138 4782
3139void 4783void
3140ev_embed_start (EV_P_ ev_embed *w) 4784ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3141{ 4785{
3142 if (expect_false (ev_is_active (w))) 4786 if (expect_false (ev_is_active (w)))
3143 return; 4787 return;
3144 4788
3145 { 4789 {
3146 struct ev_loop *loop = w->other; 4790 EV_P = w->other;
3147 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4791 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3148 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4792 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3149 } 4793 }
3150 4794
3151 EV_FREQUENT_CHECK; 4795 EV_FREQUENT_CHECK;
… …
3166 4810
3167 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
3168} 4812}
3169 4813
3170void 4814void
3171ev_embed_stop (EV_P_ ev_embed *w) 4815ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3172{ 4816{
3173 clear_pending (EV_A_ (W)w); 4817 clear_pending (EV_A_ (W)w);
3174 if (expect_false (!ev_is_active (w))) 4818 if (expect_false (!ev_is_active (w)))
3175 return; 4819 return;
3176 4820
… …
3178 4822
3179 ev_io_stop (EV_A_ &w->io); 4823 ev_io_stop (EV_A_ &w->io);
3180 ev_prepare_stop (EV_A_ &w->prepare); 4824 ev_prepare_stop (EV_A_ &w->prepare);
3181 ev_fork_stop (EV_A_ &w->fork); 4825 ev_fork_stop (EV_A_ &w->fork);
3182 4826
4827 ev_stop (EV_A_ (W)w);
4828
3183 EV_FREQUENT_CHECK; 4829 EV_FREQUENT_CHECK;
3184} 4830}
3185#endif 4831#endif
3186 4832
3187#if EV_FORK_ENABLE 4833#if EV_FORK_ENABLE
3188void 4834void
3189ev_fork_start (EV_P_ ev_fork *w) 4835ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3190{ 4836{
3191 if (expect_false (ev_is_active (w))) 4837 if (expect_false (ev_is_active (w)))
3192 return; 4838 return;
3193 4839
3194 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
… …
3199 4845
3200 EV_FREQUENT_CHECK; 4846 EV_FREQUENT_CHECK;
3201} 4847}
3202 4848
3203void 4849void
3204ev_fork_stop (EV_P_ ev_fork *w) 4850ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3205{ 4851{
3206 clear_pending (EV_A_ (W)w); 4852 clear_pending (EV_A_ (W)w);
3207 if (expect_false (!ev_is_active (w))) 4853 if (expect_false (!ev_is_active (w)))
3208 return; 4854 return;
3209 4855
… …
3220 4866
3221 EV_FREQUENT_CHECK; 4867 EV_FREQUENT_CHECK;
3222} 4868}
3223#endif 4869#endif
3224 4870
3225#if EV_ASYNC_ENABLE 4871#if EV_CLEANUP_ENABLE
3226void 4872void
3227ev_async_start (EV_P_ ev_async *w) 4873ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3228{ 4874{
3229 if (expect_false (ev_is_active (w))) 4875 if (expect_false (ev_is_active (w)))
3230 return; 4876 return;
4877
4878 EV_FREQUENT_CHECK;
4879
4880 ev_start (EV_A_ (W)w, ++cleanupcnt);
4881 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4882 cleanups [cleanupcnt - 1] = w;
4883
4884 /* cleanup watchers should never keep a refcount on the loop */
4885 ev_unref (EV_A);
4886 EV_FREQUENT_CHECK;
4887}
4888
4889void
4890ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4891{
4892 clear_pending (EV_A_ (W)w);
4893 if (expect_false (!ev_is_active (w)))
4894 return;
4895
4896 EV_FREQUENT_CHECK;
4897 ev_ref (EV_A);
4898
4899 {
4900 int active = ev_active (w);
4901
4902 cleanups [active - 1] = cleanups [--cleanupcnt];
4903 ev_active (cleanups [active - 1]) = active;
4904 }
4905
4906 ev_stop (EV_A_ (W)w);
4907
4908 EV_FREQUENT_CHECK;
4909}
4910#endif
4911
4912#if EV_ASYNC_ENABLE
4913void
4914ev_async_start (EV_P_ ev_async *w) EV_THROW
4915{
4916 if (expect_false (ev_is_active (w)))
4917 return;
4918
4919 w->sent = 0;
3231 4920
3232 evpipe_init (EV_A); 4921 evpipe_init (EV_A);
3233 4922
3234 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3235 4924
… …
3239 4928
3240 EV_FREQUENT_CHECK; 4929 EV_FREQUENT_CHECK;
3241} 4930}
3242 4931
3243void 4932void
3244ev_async_stop (EV_P_ ev_async *w) 4933ev_async_stop (EV_P_ ev_async *w) EV_THROW
3245{ 4934{
3246 clear_pending (EV_A_ (W)w); 4935 clear_pending (EV_A_ (W)w);
3247 if (expect_false (!ev_is_active (w))) 4936 if (expect_false (!ev_is_active (w)))
3248 return; 4937 return;
3249 4938
… …
3260 4949
3261 EV_FREQUENT_CHECK; 4950 EV_FREQUENT_CHECK;
3262} 4951}
3263 4952
3264void 4953void
3265ev_async_send (EV_P_ ev_async *w) 4954ev_async_send (EV_P_ ev_async *w) EV_THROW
3266{ 4955{
3267 w->sent = 1; 4956 w->sent = 1;
3268 evpipe_write (EV_A_ &gotasync); 4957 evpipe_write (EV_A_ &async_pending);
3269} 4958}
3270#endif 4959#endif
3271 4960
3272/*****************************************************************************/ 4961/*****************************************************************************/
3273 4962
… …
3307 4996
3308 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4997 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3309} 4998}
3310 4999
3311void 5000void
3312ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5001ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3313{ 5002{
3314 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5003 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3315 5004
3316 if (expect_false (!once)) 5005 if (expect_false (!once))
3317 { 5006 {
3318 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 5007 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3319 return; 5008 return;
3320 } 5009 }
3321 5010
3322 once->cb = cb; 5011 once->cb = cb;
3323 once->arg = arg; 5012 once->arg = arg;
… …
3338} 5027}
3339 5028
3340/*****************************************************************************/ 5029/*****************************************************************************/
3341 5030
3342#if EV_WALK_ENABLE 5031#if EV_WALK_ENABLE
5032ecb_cold
3343void 5033void
3344ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5034ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3345{ 5035{
3346 int i, j; 5036 int i, j;
3347 ev_watcher_list *wl, *wn; 5037 ev_watcher_list *wl, *wn;
3348 5038
3349 if (types & (EV_IO | EV_EMBED)) 5039 if (types & (EV_IO | EV_EMBED))
… …
3392 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5082 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3393#endif 5083#endif
3394 5084
3395#if EV_IDLE_ENABLE 5085#if EV_IDLE_ENABLE
3396 if (types & EV_IDLE) 5086 if (types & EV_IDLE)
3397 for (j = NUMPRI; i--; ) 5087 for (j = NUMPRI; j--; )
3398 for (i = idlecnt [j]; i--; ) 5088 for (i = idlecnt [j]; i--; )
3399 cb (EV_A_ EV_IDLE, idles [j][i]); 5089 cb (EV_A_ EV_IDLE, idles [j][i]);
3400#endif 5090#endif
3401 5091
3402#if EV_FORK_ENABLE 5092#if EV_FORK_ENABLE
… …
3410 if (types & EV_ASYNC) 5100 if (types & EV_ASYNC)
3411 for (i = asynccnt; i--; ) 5101 for (i = asynccnt; i--; )
3412 cb (EV_A_ EV_ASYNC, asyncs [i]); 5102 cb (EV_A_ EV_ASYNC, asyncs [i]);
3413#endif 5103#endif
3414 5104
5105#if EV_PREPARE_ENABLE
3415 if (types & EV_PREPARE) 5106 if (types & EV_PREPARE)
3416 for (i = preparecnt; i--; ) 5107 for (i = preparecnt; i--; )
3417#if EV_EMBED_ENABLE 5108# if EV_EMBED_ENABLE
3418 if (ev_cb (prepares [i]) != embed_prepare_cb) 5109 if (ev_cb (prepares [i]) != embed_prepare_cb)
3419#endif 5110# endif
3420 cb (EV_A_ EV_PREPARE, prepares [i]); 5111 cb (EV_A_ EV_PREPARE, prepares [i]);
5112#endif
3421 5113
5114#if EV_CHECK_ENABLE
3422 if (types & EV_CHECK) 5115 if (types & EV_CHECK)
3423 for (i = checkcnt; i--; ) 5116 for (i = checkcnt; i--; )
3424 cb (EV_A_ EV_CHECK, checks [i]); 5117 cb (EV_A_ EV_CHECK, checks [i]);
5118#endif
3425 5119
5120#if EV_SIGNAL_ENABLE
3426 if (types & EV_SIGNAL) 5121 if (types & EV_SIGNAL)
3427 for (i = 0; i < signalmax; ++i) 5122 for (i = 0; i < EV_NSIG - 1; ++i)
3428 for (wl = signals [i].head; wl; ) 5123 for (wl = signals [i].head; wl; )
3429 { 5124 {
3430 wn = wl->next; 5125 wn = wl->next;
3431 cb (EV_A_ EV_SIGNAL, wl); 5126 cb (EV_A_ EV_SIGNAL, wl);
3432 wl = wn; 5127 wl = wn;
3433 } 5128 }
5129#endif
3434 5130
5131#if EV_CHILD_ENABLE
3435 if (types & EV_CHILD) 5132 if (types & EV_CHILD)
3436 for (i = EV_PID_HASHSIZE; i--; ) 5133 for (i = (EV_PID_HASHSIZE); i--; )
3437 for (wl = childs [i]; wl; ) 5134 for (wl = childs [i]; wl; )
3438 { 5135 {
3439 wn = wl->next; 5136 wn = wl->next;
3440 cb (EV_A_ EV_CHILD, wl); 5137 cb (EV_A_ EV_CHILD, wl);
3441 wl = wn; 5138 wl = wn;
3442 } 5139 }
5140#endif
3443/* EV_STAT 0x00001000 /* stat data changed */ 5141/* EV_STAT 0x00001000 /* stat data changed */
3444/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5142/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3445} 5143}
3446#endif 5144#endif
3447 5145
3448#if EV_MULTIPLICITY 5146#if EV_MULTIPLICITY
3449 #include "ev_wrap.h" 5147 #include "ev_wrap.h"
3450#endif 5148#endif
3451 5149
3452#ifdef __cplusplus
3453}
3454#endif
3455

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