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Comparing libev/ev.c (file contents):
Revision 1.293 by root, Mon Jun 29 18:46:52 2009 UTC vs.
Revision 1.486 by root, Thu Oct 25 03:11:04 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)
1538
1539#if EV_MINPRI == EV_MAXPRI
1540# define ABSPRI(w) (((W)w), 0)
1541#else
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1542# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1543#endif
398 1544
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1545#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 1546#define EMPTY2(a,b) /* used to suppress some warnings */
401 1547
402typedef ev_watcher *W; 1548typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 1552#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1553#define ev_at(w) ((WT)(w))->at
408 1554
409#if EV_USE_REALTIME 1555#if EV_USE_REALTIME
410/* 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 */
411/* giving it a reasonably high chance of working on typical architetcures */ 1557/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1558static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1559#endif
414 1560
415#if EV_USE_MONOTONIC 1561#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1562static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1563#endif
418 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
419#ifdef _WIN32 1575#ifdef _WIN32
420# include "ev_win32.c" 1576# include "ev_win32.c"
421#endif 1577#endif
422 1578
423/*****************************************************************************/ 1579/*****************************************************************************/
424 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
425static void (*syserr_cb)(const char *msg); 1682static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
426 1683
1684ecb_cold
427void 1685void
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
429{ 1687{
430 syserr_cb = cb; 1688 syserr_cb = cb;
431} 1689}
432 1690
433static void noinline 1691noinline ecb_cold
1692static void
434ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
435{ 1694{
436 if (!msg) 1695 if (!msg)
437 msg = "(libev) system error"; 1696 msg = "(libev) system error";
438 1697
439 if (syserr_cb) 1698 if (syserr_cb)
440 syserr_cb (msg); 1699 syserr_cb (msg);
441 else 1700 else
442 { 1701 {
1702#if EV_AVOID_STDIO
1703 ev_printerr (msg);
1704 ev_printerr (": ");
1705 ev_printerr (strerror (errno));
1706 ev_printerr ("\n");
1707#else
443 perror (msg); 1708 perror (msg);
1709#endif
444 abort (); 1710 abort ();
445 } 1711 }
446} 1712}
447 1713
448static void * 1714static void *
449ev_realloc_emul (void *ptr, long size) 1715ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
450{ 1716{
451 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
452 * 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
453 * 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.
454 */ 1722 */
455 1723
456 if (size) 1724 if (size)
457 return realloc (ptr, size); 1725 return realloc (ptr, size);
458 1726
459 free (ptr); 1727 free (ptr);
460 return 0; 1728 return 0;
461} 1729}
462 1730
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
464 1732
1733ecb_cold
465void 1734void
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
467{ 1736{
468 alloc = cb; 1737 alloc = cb;
469} 1738}
470 1739
471inline_speed void * 1740inline_speed void *
… …
473{ 1742{
474 ptr = alloc (ptr, size); 1743 ptr = alloc (ptr, size);
475 1744
476 if (!ptr && size) 1745 if (!ptr && size)
477 { 1746 {
1747#if EV_AVOID_STDIO
1748 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1749#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1750 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1751#endif
479 abort (); 1752 abort ();
480 } 1753 }
481 1754
482 return ptr; 1755 return ptr;
483} 1756}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1758#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1759#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1760
488/*****************************************************************************/ 1761/*****************************************************************************/
489 1762
1763/* set in reify when reification needed */
1764#define EV_ANFD_REIFY 1
1765
490/* file descriptor info structure */ 1766/* file descriptor info structure */
491typedef struct 1767typedef struct
492{ 1768{
493 WL head; 1769 WL head;
494 unsigned char events; /* the events watched for */ 1770 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1771 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1772 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 1773 unsigned char unused;
498#if EV_USE_EPOLL 1774#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1775 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1776#endif
501#if EV_SELECT_IS_WINSOCKET 1777#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1778 SOCKET handle;
1779#endif
1780#if EV_USE_IOCP
1781 OVERLAPPED or, ow;
503#endif 1782#endif
504} ANFD; 1783} ANFD;
505 1784
506/* stores the pending event set for a given watcher */ 1785/* stores the pending event set for a given watcher */
507typedef struct 1786typedef struct
… …
549 #undef VAR 1828 #undef VAR
550 }; 1829 };
551 #include "ev_wrap.h" 1830 #include "ev_wrap.h"
552 1831
553 static struct ev_loop default_loop_struct; 1832 static struct ev_loop default_loop_struct;
554 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 */
555 1834
556#else 1835#else
557 1836
558 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 */
559 #define VAR(name,decl) static decl; 1838 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1839 #include "ev_vars.h"
561 #undef VAR 1840 #undef VAR
562 1841
563 static int ev_default_loop_ptr; 1842 static int ev_default_loop_ptr;
564 1843
565#endif 1844#endif
566 1845
1846#if EV_FEATURE_API
1847# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1848# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1849# define EV_INVOKE_PENDING invoke_cb (EV_A)
1850#else
1851# define EV_RELEASE_CB (void)0
1852# define EV_ACQUIRE_CB (void)0
1853# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1854#endif
1855
1856#define EVBREAK_RECURSE 0x80
1857
567/*****************************************************************************/ 1858/*****************************************************************************/
568 1859
569#ifndef EV_HAVE_EV_TIME 1860#ifndef EV_HAVE_EV_TIME
570ev_tstamp 1861ev_tstamp
571ev_time (void) 1862ev_time (void) EV_NOEXCEPT
572{ 1863{
573#if EV_USE_REALTIME 1864#if EV_USE_REALTIME
574 if (expect_true (have_realtime)) 1865 if (expect_true (have_realtime))
575 { 1866 {
576 struct timespec ts; 1867 struct timespec ts;
… …
600 return ev_time (); 1891 return ev_time ();
601} 1892}
602 1893
603#if EV_MULTIPLICITY 1894#if EV_MULTIPLICITY
604ev_tstamp 1895ev_tstamp
605ev_now (EV_P) 1896ev_now (EV_P) EV_NOEXCEPT
606{ 1897{
607 return ev_rt_now; 1898 return ev_rt_now;
608} 1899}
609#endif 1900#endif
610 1901
611void 1902void
612ev_sleep (ev_tstamp delay) 1903ev_sleep (ev_tstamp delay) EV_NOEXCEPT
613{ 1904{
614 if (delay > 0.) 1905 if (delay > 0.)
615 { 1906 {
616#if EV_USE_NANOSLEEP 1907#if EV_USE_NANOSLEEP
617 struct timespec ts; 1908 struct timespec ts;
618 1909
619 ts.tv_sec = (time_t)delay; 1910 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
623#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) */
624 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
625#else 1916#else
626 struct timeval tv; 1917 struct timeval tv;
627 1918
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1919 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1920 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 1921 /* by older ones */
1922 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 1923 select (0, 0, 0, 0, &tv);
635#endif 1924#endif
636 } 1925 }
637} 1926}
638 1927
639/*****************************************************************************/ 1928/*****************************************************************************/
640 1929
641#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 */
642 1931
643/* find a suitable new size for the given array, */ 1932/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 1933/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 1934inline_size int
646array_nextsize (int elem, int cur, int cnt) 1935array_nextsize (int elem, int cur, int cnt)
647{ 1936{
648 int ncur = cur + 1; 1937 int ncur = cur + 1;
649 1938
650 do 1939 do
651 ncur <<= 1; 1940 ncur <<= 1;
652 while (cnt > ncur); 1941 while (cnt > ncur);
653 1942
654 /* 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 */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1944 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 { 1945 {
657 ncur *= elem; 1946 ncur *= elem;
658 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);
659 ncur = ncur - sizeof (void *) * 4; 1948 ncur = ncur - sizeof (void *) * 4;
… …
661 } 1950 }
662 1951
663 return ncur; 1952 return ncur;
664} 1953}
665 1954
666static noinline void * 1955noinline ecb_cold
1956static void *
667array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
668{ 1958{
669 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
671} 1961}
… …
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
675 1965
676#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
678 { \ 1968 { \
679 int ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
683 } 1973 }
684 1974
… …
696 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
697 1987
698/*****************************************************************************/ 1988/*****************************************************************************/
699 1989
700/* dummy callback for pending events */ 1990/* dummy callback for pending events */
701static void noinline 1991noinline
1992static void
702pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
703{ 1994{
704} 1995}
705 1996
706void noinline 1997noinline
1998void
707ev_feed_event (EV_P_ void *w, int revents) 1999ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
708{ 2000{
709 W w_ = (W)w; 2001 W w_ = (W)w;
710 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
711 2003
712 if (expect_false (w_->pending)) 2004 if (expect_false (w_->pending))
… …
716 w_->pending = ++pendingcnt [pri]; 2008 w_->pending = ++pendingcnt [pri];
717 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2009 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
718 pendings [pri][w_->pending - 1].w = w_; 2010 pendings [pri][w_->pending - 1].w = w_;
719 pendings [pri][w_->pending - 1].events = revents; 2011 pendings [pri][w_->pending - 1].events = revents;
720 } 2012 }
2013
2014 pendingpri = NUMPRI - 1;
721} 2015}
722 2016
723inline_speed void 2017inline_speed void
724feed_reverse (EV_P_ W w) 2018feed_reverse (EV_P_ W w)
725{ 2019{
… …
745} 2039}
746 2040
747/*****************************************************************************/ 2041/*****************************************************************************/
748 2042
749inline_speed void 2043inline_speed void
750fd_event (EV_P_ int fd, int revents) 2044fd_event_nocheck (EV_P_ int fd, int revents)
751{ 2045{
752 ANFD *anfd = anfds + fd; 2046 ANFD *anfd = anfds + fd;
753 ev_io *w; 2047 ev_io *w;
754 2048
755 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)
… …
759 if (ev) 2053 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 2054 ev_feed_event (EV_A_ (W)w, ev);
761 } 2055 }
762} 2056}
763 2057
764void 2058/* do not submit kernel events for fds that have reify set */
2059/* because that means they changed while we were polling for new events */
2060inline_speed void
765ev_feed_fd_event (EV_P_ int fd, int revents) 2061fd_event (EV_P_ int fd, int revents)
2062{
2063 ANFD *anfd = anfds + fd;
2064
2065 if (expect_true (!anfd->reify))
2066 fd_event_nocheck (EV_A_ fd, revents);
2067}
2068
2069void
2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
766{ 2071{
767 if (fd >= 0 && fd < anfdmax) 2072 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 2073 fd_event_nocheck (EV_A_ fd, revents);
769} 2074}
770 2075
771/* make sure the external fd watch events are in-sync */ 2076/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 2077/* with the kernel/libev internal state */
773inline_size void 2078inline_size void
774fd_reify (EV_P) 2079fd_reify (EV_P)
775{ 2080{
776 int i; 2081 int i;
777 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
778 for (i = 0; i < fdchangecnt; ++i) 2108 for (i = 0; i < fdchangecnt; ++i)
779 { 2109 {
780 int fd = fdchanges [i]; 2110 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 2111 ANFD *anfd = anfds + fd;
782 ev_io *w; 2112 ev_io *w;
783 2113
784 unsigned char events = 0; 2114 unsigned char o_events = anfd->events;
2115 unsigned char o_reify = anfd->reify;
785 2116
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2117 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 2118
789#if EV_SELECT_IS_WINSOCKET 2119 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 2120 {
792 unsigned long arg; 2121 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 2122
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2123 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 2124 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 2125
797 #endif 2126 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2127 o_reify = EV__IOFDSET; /* actually |= */
799 } 2128 }
800#endif
801 2129
802 { 2130 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 2131 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 2132 }
813 2133
814 fdchangecnt = 0; 2134 fdchangecnt = 0;
815} 2135}
816 2136
817/* something about the given fd changed */ 2137/* something about the given fd changed */
818inline_size void 2138inline_size
2139void
819fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
820{ 2141{
821 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
822 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
823 2144
… …
828 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
829 } 2150 }
830} 2151}
831 2152
832/* 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 */
833inline_speed void 2154inline_speed ecb_cold void
834fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
835{ 2156{
836 ev_io *w; 2157 ev_io *w;
837 2158
838 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 2161 ev_io_stop (EV_A_ w);
841 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);
842 } 2163 }
843} 2164}
844 2165
845/* check whether the given fd is atcually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
846inline_size int 2167inline_size ecb_cold int
847fd_valid (int fd) 2168fd_valid (int fd)
848{ 2169{
849#ifdef _WIN32 2170#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 2172#else
852 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
853#endif 2174#endif
854} 2175}
855 2176
856/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
857static void noinline 2178noinline ecb_cold
2179static void
858fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
859{ 2181{
860 int fd; 2182 int fd;
861 2183
862 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
866} 2188}
867 2189
868/* 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 */
869static void noinline 2191noinline ecb_cold
2192static void
870fd_enomem (EV_P) 2193fd_enomem (EV_P)
871{ 2194{
872 int fd; 2195 int fd;
873 2196
874 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 2198 if (anfds [fd].events)
876 { 2199 {
877 fd_kill (EV_A_ fd); 2200 fd_kill (EV_A_ fd);
878 return; 2201 break;
879 } 2202 }
880} 2203}
881 2204
882/* 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 */
883static void noinline 2206noinline
2207static void
884fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
885{ 2209{
886 int fd; 2210 int fd;
887 2211
888 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 2213 if (anfds [fd].events)
890 { 2214 {
891 anfds [fd].events = 0; 2215 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 2216 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2217 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 2218 }
895} 2219}
896 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
897/*****************************************************************************/ 2235/*****************************************************************************/
898 2236
899/* 2237/*
900 * 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
901 * 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
902 * the branching factor of the d-tree. 2240 * the branching factor of the d-tree.
903 */ 2241 */
904 2242
905/* 2243/*
… …
973 2311
974 for (;;) 2312 for (;;)
975 { 2313 {
976 int c = k << 1; 2314 int c = k << 1;
977 2315
978 if (c > N + HEAP0 - 1) 2316 if (c >= N + HEAP0)
979 break; 2317 break;
980 2318
981 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])
982 ? 1 : 0; 2320 ? 1 : 0;
983 2321
… …
1019 2357
1020/* move an element suitably so it is in a correct place */ 2358/* move an element suitably so it is in a correct place */
1021inline_size void 2359inline_size void
1022adjustheap (ANHE *heap, int N, int k) 2360adjustheap (ANHE *heap, int N, int k)
1023{ 2361{
1024 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)]))
1025 upheap (heap, k); 2363 upheap (heap, k);
1026 else 2364 else
1027 downheap (heap, N, k); 2365 downheap (heap, N, k);
1028} 2366}
1029 2367
… …
1042/*****************************************************************************/ 2380/*****************************************************************************/
1043 2381
1044/* associate signal watchers to a signal signal */ 2382/* associate signal watchers to a signal signal */
1045typedef struct 2383typedef struct
1046{ 2384{
2385 EV_ATOMIC_T pending;
2386#if EV_MULTIPLICITY
2387 EV_P;
2388#endif
1047 WL head; 2389 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 2390} ANSIG;
1050 2391
1051static ANSIG *signals; 2392static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 2393
1056/*****************************************************************************/ 2394/*****************************************************************************/
1057 2395
1058/* used to prepare libev internal fd's */ 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* 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
1060inline_speed void 2444inline_speed void
1061fd_intern (int fd) 2445evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1062{ 2446{
1063#ifdef _WIN32 2447 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 2448
1072static void noinline 2449 if (expect_true (*flag))
1073evpipe_init (EV_P) 2450 return;
1074{ 2451
1075 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)
1076 { 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
1077#if EV_USE_EVENTFD 2468#if EV_USE_EVENTFD
1078 if ((evfd = eventfd (0, 0)) >= 0) 2469 if (evpipe [0] < 0)
1079 { 2470 {
1080 evpipe [0] = -1; 2471 uint64_t counter = 1;
1081 fd_intern (evfd); 2472 write (evpipe [1], &counter, sizeof (uint64_t));
1082 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 2473 }
1084 else 2474 else
1085#endif 2475#endif
1086 { 2476 {
1087 while (pipe (evpipe)) 2477#ifdef _WIN32
1088 ev_syserr ("(libev) error creating signal/async pipe"); 2478 WSABUF buf;
1089 2479 DWORD sent;
1090 fd_intern (evpipe [0]); 2480 buf.buf = (char *)&buf;
1091 fd_intern (evpipe [1]); 2481 buf.len = 1;
1092 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
1093 } 2486 }
1094
1095 ev_io_start (EV_A_ &pipe_w);
1096 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 }
1098}
1099
1100inline_size void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{
1103 if (!*flag)
1104 {
1105 int old_errno = errno; /* save errno because write might clobber it */
1106
1107 *flag = 1;
1108
1109#if EV_USE_EVENTFD
1110 if (evfd >= 0)
1111 {
1112 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t));
1114 }
1115 else
1116#endif
1117 write (evpipe [1], &old_errno, 1);
1118 2487
1119 errno = old_errno; 2488 errno = old_errno;
1120 } 2489 }
1121} 2490}
1122 2491
1123/* called whenever the libev signal pipe */ 2492/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 2493/* got some events (signal, async) */
1125static void 2494static void
1126pipecb (EV_P_ ev_io *iow, int revents) 2495pipecb (EV_P_ ev_io *iow, int revents)
1127{ 2496{
2497 int i;
2498
2499 if (revents & EV_READ)
2500 {
1128#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1129 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1130 { 2503 {
1131 uint64_t counter; 2504 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1133 } 2506 }
1134 else 2507 else
1135#endif 2508#endif
1136 { 2509 {
1137 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
1138 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)
1139 } 2530 {
2531 sig_pending = 0;
1140 2532
1141 if (gotsig && ev_is_default_loop (EV_A)) 2533 ECB_MEMORY_FENCE;
1142 {
1143 int signum;
1144 gotsig = 0;
1145 2534
1146 for (signum = signalmax; signum--; ) 2535 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 2536 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 2537 ev_feed_signal_event (EV_A_ i + 1);
1149 } 2538 }
2539#endif
1150 2540
1151#if EV_ASYNC_ENABLE 2541#if EV_ASYNC_ENABLE
1152 if (gotasync) 2542 if (async_pending)
1153 { 2543 {
1154 int i; 2544 async_pending = 0;
1155 gotasync = 0; 2545
2546 ECB_MEMORY_FENCE;
1156 2547
1157 for (i = asynccnt; i--; ) 2548 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 2549 if (asyncs [i]->sent)
1159 { 2550 {
1160 asyncs [i]->sent = 0; 2551 asyncs [i]->sent = 0;
2552 ECB_MEMORY_FENCE_RELEASE;
1161 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2553 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1162 } 2554 }
1163 } 2555 }
1164#endif 2556#endif
1165} 2557}
1166 2558
1167/*****************************************************************************/ 2559/*****************************************************************************/
1168 2560
2561void
2562ev_feed_signal (int signum) EV_NOEXCEPT
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
1169static void 2577static void
1170ev_sighandler (int signum) 2578ev_sighandler (int signum)
1171{ 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_NOEXCEPT
2590{
2591 WL w;
2592
2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2594 return;
2595
2596 --signum;
2597
1172#if EV_MULTIPLICITY 2598#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct; 2599 /* it is permissible to try to feed a signal to the wrong loop */
1174#endif 2600 /* or, likely more useful, feeding a signal nobody is waiting for */
1175 2601
1176#if _WIN32 2602 if (expect_false (signals [signum].loop != EV_A))
1177 signal (signum, ev_sighandler);
1178#endif
1179
1180 signals [signum - 1].gotsig = 1;
1181 evpipe_write (EV_A_ &gotsig);
1182}
1183
1184void noinline
1185ev_feed_signal_event (EV_P_ int signum)
1186{
1187 WL w;
1188
1189#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1191#endif
1192
1193 --signum;
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 2603 return;
2604#endif
1197 2605
1198 signals [signum].gotsig = 0; 2606 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE;
1199 2608
1200 for (w = signals [signum].head; w; w = w->next) 2609 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 2611}
1203 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
1204/*****************************************************************************/ 2635/*****************************************************************************/
1205 2636
2637#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 2638static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 2639
1210static ev_signal childev; 2640static ev_signal childev;
1211 2641
1212#ifndef WIFCONTINUED 2642#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 2643# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 2648child_reap (EV_P_ int chain, int pid, int status)
1219{ 2649{
1220 ev_child *w; 2650 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2651 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 2652
1223 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)
1224 { 2654 {
1225 if ((w->pid == pid || !w->pid) 2655 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 2656 && (!traced || (w->flags & 1)))
1227 { 2657 {
1228 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 */
… …
1253 /* 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 */
1254 /* 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 */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2685 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 2686
1257 child_reap (EV_A_ pid, pid, status); 2687 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 2688 if ((EV_PID_HASHSIZE) > 1)
1259 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 */
1260} 2690}
1261 2691
1262#endif 2692#endif
1263 2693
1264/*****************************************************************************/ 2694/*****************************************************************************/
1265 2695
2696#if EV_USE_IOCP
2697# include "ev_iocp.c"
2698#endif
1266#if EV_USE_PORT 2699#if EV_USE_PORT
1267# include "ev_port.c" 2700# include "ev_port.c"
1268#endif 2701#endif
1269#if EV_USE_KQUEUE 2702#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 2703# include "ev_kqueue.c"
… …
1277#endif 2710#endif
1278#if EV_USE_SELECT 2711#if EV_USE_SELECT
1279# include "ev_select.c" 2712# include "ev_select.c"
1280#endif 2713#endif
1281 2714
1282int 2715ecb_cold int
1283ev_version_major (void) 2716ev_version_major (void) EV_NOEXCEPT
1284{ 2717{
1285 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
1286} 2719}
1287 2720
1288int 2721ecb_cold int
1289ev_version_minor (void) 2722ev_version_minor (void) EV_NOEXCEPT
1290{ 2723{
1291 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
1292} 2725}
1293 2726
1294/* 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 */
1295int inline_size 2728inline_size ecb_cold int
1296enable_secure (void) 2729enable_secure (void)
1297{ 2730{
1298#ifdef _WIN32 2731#ifdef _WIN32
1299 return 0; 2732 return 0;
1300#else 2733#else
1301 return getuid () != geteuid () 2734 return getuid () != geteuid ()
1302 || getgid () != getegid (); 2735 || getgid () != getegid ();
1303#endif 2736#endif
1304} 2737}
1305 2738
2739ecb_cold
1306unsigned int 2740unsigned int
1307ev_supported_backends (void) 2741ev_supported_backends (void) EV_NOEXCEPT
1308{ 2742{
1309 unsigned int flags = 0; 2743 unsigned int flags = 0;
1310 2744
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1312 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1316 2750
1317 return flags; 2751 return flags;
1318} 2752}
1319 2753
2754ecb_cold
1320unsigned int 2755unsigned int
1321ev_recommended_backends (void) 2756ev_recommended_backends (void) EV_NOEXCEPT
1322{ 2757{
1323 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
1324 2759
1325#ifndef __NetBSD__ 2760#ifndef __NetBSD__
1326 /* kqueue is borked on everything but netbsd apparently */ 2761 /* kqueue is borked on everything but netbsd apparently */
… …
1330#ifdef __APPLE__ 2765#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 2766 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2767 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 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 */
1334#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
1335 2773
1336 return flags; 2774 return flags;
1337} 2775}
1338 2776
2777ecb_cold
1339unsigned int 2778unsigned int
1340ev_embeddable_backends (void) 2779ev_embeddable_backends (void) EV_NOEXCEPT
1341{ 2780{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1343 2782
1344 /* 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 */
1345 /* please fix it and tell me how to detect the fix */ 2784 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1346 flags &= ~EVBACKEND_EPOLL; 2785 flags &= ~EVBACKEND_EPOLL;
1347 2786
1348 return flags; 2787 return flags;
1349} 2788}
1350 2789
1351unsigned int 2790unsigned int
1352ev_backend (EV_P) 2791ev_backend (EV_P) EV_NOEXCEPT
1353{ 2792{
1354 return backend; 2793 return backend;
1355} 2794}
1356 2795
2796#if EV_FEATURE_API
1357unsigned int 2797unsigned int
1358ev_loop_count (EV_P) 2798ev_iteration (EV_P) EV_NOEXCEPT
1359{ 2799{
1360 return loop_count; 2800 return loop_count;
1361} 2801}
1362 2802
2803unsigned int
2804ev_depth (EV_P) EV_NOEXCEPT
2805{
2806 return loop_depth;
2807}
2808
1363void 2809void
1364ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2810ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1365{ 2811{
1366 io_blocktime = interval; 2812 io_blocktime = interval;
1367} 2813}
1368 2814
1369void 2815void
1370ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2816ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1371{ 2817{
1372 timeout_blocktime = interval; 2818 timeout_blocktime = interval;
1373} 2819}
1374 2820
2821void
2822ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2823{
2824 userdata = data;
2825}
2826
2827void *
2828ev_userdata (EV_P) EV_NOEXCEPT
2829{
2830 return userdata;
2831}
2832
2833void
2834ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2835{
2836 invoke_cb = invoke_pending_cb;
2837}
2838
2839void
2840ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2841{
2842 release_cb = release;
2843 acquire_cb = acquire;
2844}
2845#endif
2846
1375/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
1376static void noinline 2848noinline ecb_cold
2849static void
1377loop_init (EV_P_ unsigned int flags) 2850loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1378{ 2851{
1379 if (!backend) 2852 if (!backend)
1380 { 2853 {
2854 origflags = flags;
2855
1381#if EV_USE_REALTIME 2856#if EV_USE_REALTIME
1382 if (!have_realtime) 2857 if (!have_realtime)
1383 { 2858 {
1384 struct timespec ts; 2859 struct timespec ts;
1385 2860
… …
1396 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2871 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397 have_monotonic = 1; 2872 have_monotonic = 1;
1398 } 2873 }
1399#endif 2874#endif
1400 2875
1401 ev_rt_now = ev_time ();
1402 mn_now = get_clock ();
1403 now_floor = mn_now;
1404 rtmn_diff = ev_rt_now - mn_now;
1405
1406 io_blocktime = 0.;
1407 timeout_blocktime = 0.;
1408 backend = 0;
1409 backend_fd = -1;
1410 gotasync = 0;
1411#if EV_USE_INOTIFY
1412 fs_fd = -2;
1413#endif
1414
1415 /* pid check not overridable via env */ 2876 /* pid check not overridable via env */
1416#ifndef _WIN32 2877#ifndef _WIN32
1417 if (flags & EVFLAG_FORKCHECK) 2878 if (flags & EVFLAG_FORKCHECK)
1418 curpid = getpid (); 2879 curpid = getpid ();
1419#endif 2880#endif
… …
1421 if (!(flags & EVFLAG_NOENV) 2882 if (!(flags & EVFLAG_NOENV)
1422 && !enable_secure () 2883 && !enable_secure ()
1423 && getenv ("LIBEV_FLAGS")) 2884 && getenv ("LIBEV_FLAGS"))
1424 flags = atoi (getenv ("LIBEV_FLAGS")); 2885 flags = atoi (getenv ("LIBEV_FLAGS"));
1425 2886
1426 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))
1427 flags |= ev_recommended_backends (); 2915 flags |= ev_recommended_backends ();
1428 2916
2917#if EV_USE_IOCP
2918 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2919#endif
1429#if EV_USE_PORT 2920#if EV_USE_PORT
1430 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2921 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1431#endif 2922#endif
1432#if EV_USE_KQUEUE 2923#if EV_USE_KQUEUE
1433 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2924 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1442 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2933 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1443#endif 2934#endif
1444 2935
1445 ev_prepare_init (&pending_w, pendingcb); 2936 ev_prepare_init (&pending_w, pendingcb);
1446 2937
2938#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 ev_init (&pipe_w, pipecb); 2939 ev_init (&pipe_w, pipecb);
1448 ev_set_priority (&pipe_w, EV_MAXPRI); 2940 ev_set_priority (&pipe_w, EV_MAXPRI);
2941#endif
1449 } 2942 }
1450} 2943}
1451 2944
1452/* free up a loop structure */ 2945/* free up a loop structure */
1453static void noinline 2946ecb_cold
2947void
1454loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
1455{ 2949{
1456 int i; 2950 int i;
1457 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
1458 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
1459 { 2976 {
1460 ev_ref (EV_A); /* signal watcher */ 2977 /*ev_ref (EV_A);*/
1461 ev_io_stop (EV_A_ &pipe_w); 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
1462 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
1463#if EV_USE_EVENTFD 2984#if EV_USE_SIGNALFD
1464 if (evfd >= 0) 2985 if (ev_is_active (&sigfd_w))
1465 close (evfd); 2986 close (sigfd);
1466#endif 2987#endif
1467
1468 if (evpipe [0] >= 0)
1469 {
1470 close (evpipe [0]);
1471 close (evpipe [1]);
1472 }
1473 }
1474 2988
1475#if EV_USE_INOTIFY 2989#if EV_USE_INOTIFY
1476 if (fs_fd >= 0) 2990 if (fs_fd >= 0)
1477 close (fs_fd); 2991 close (fs_fd);
1478#endif 2992#endif
1479 2993
1480 if (backend_fd >= 0) 2994 if (backend_fd >= 0)
1481 close (backend_fd); 2995 close (backend_fd);
1482 2996
2997#if EV_USE_IOCP
2998 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2999#endif
1483#if EV_USE_PORT 3000#if EV_USE_PORT
1484 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3001 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1485#endif 3002#endif
1486#if EV_USE_KQUEUE 3003#if EV_USE_KQUEUE
1487 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3004 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1502#if EV_IDLE_ENABLE 3019#if EV_IDLE_ENABLE
1503 array_free (idle, [i]); 3020 array_free (idle, [i]);
1504#endif 3021#endif
1505 } 3022 }
1506 3023
1507 ev_free (anfds); anfdmax = 0; 3024 ev_free (anfds); anfds = 0; anfdmax = 0;
1508 3025
1509 /* have to use the microsoft-never-gets-it-right macro */ 3026 /* have to use the microsoft-never-gets-it-right macro */
1510 array_free (rfeed, EMPTY); 3027 array_free (rfeed, EMPTY);
1511 array_free (fdchange, EMPTY); 3028 array_free (fdchange, EMPTY);
1512 array_free (timer, EMPTY); 3029 array_free (timer, EMPTY);
… …
1514 array_free (periodic, EMPTY); 3031 array_free (periodic, EMPTY);
1515#endif 3032#endif
1516#if EV_FORK_ENABLE 3033#if EV_FORK_ENABLE
1517 array_free (fork, EMPTY); 3034 array_free (fork, EMPTY);
1518#endif 3035#endif
3036#if EV_CLEANUP_ENABLE
3037 array_free (cleanup, EMPTY);
3038#endif
1519 array_free (prepare, EMPTY); 3039 array_free (prepare, EMPTY);
1520 array_free (check, EMPTY); 3040 array_free (check, EMPTY);
1521#if EV_ASYNC_ENABLE 3041#if EV_ASYNC_ENABLE
1522 array_free (async, EMPTY); 3042 array_free (async, EMPTY);
1523#endif 3043#endif
1524 3044
1525 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
1526} 3055}
1527 3056
1528#if EV_USE_INOTIFY 3057#if EV_USE_INOTIFY
1529inline_size void infy_fork (EV_P); 3058inline_size void infy_fork (EV_P);
1530#endif 3059#endif
… …
1543#endif 3072#endif
1544#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
1545 infy_fork (EV_A); 3074 infy_fork (EV_A);
1546#endif 3075#endif
1547 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1548 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
1549 { 3079 {
1550 /* this "locks" the handlers against writing to the pipe */ 3080 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1551 /* while we modify the fd vars */
1552 gotsig = 1;
1553#if EV_ASYNC_ENABLE
1554 gotasync = 1;
1555#endif
1556 3081
1557 ev_ref (EV_A); 3082 ev_ref (EV_A);
1558 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
1559 3084
1560#if EV_USE_EVENTFD
1561 if (evfd >= 0)
1562 close (evfd);
1563#endif
1564
1565 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
1566 { 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
1567 close (evpipe [0]);
1568 close (evpipe [1]);
1569 }
1570 3087
1571 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
1572 /* now iterate over everything, in case we missed something */ 3089 /* iterate over everything, in case we missed something before */
1573 pipecb (EV_A_ &pipe_w, EV_READ); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1574 } 3091 }
3092#endif
1575 3093
1576 postfork = 0; 3094 postfork = 0;
1577} 3095}
1578 3096
1579#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
1580 3098
3099ecb_cold
1581struct ev_loop * 3100struct ev_loop *
1582ev_loop_new (unsigned int flags) 3101ev_loop_new (unsigned int flags) EV_NOEXCEPT
1583{ 3102{
1584 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));
1585 3104
1586 memset (loop, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588 loop_init (EV_A_ flags); 3106 loop_init (EV_A_ flags);
1589 3107
1590 if (ev_backend (EV_A)) 3108 if (ev_backend (EV_A))
1591 return loop; 3109 return EV_A;
1592 3110
3111 ev_free (EV_A);
1593 return 0; 3112 return 0;
1594} 3113}
1595 3114
1596void 3115#endif /* multiplicity */
1597ev_loop_destroy (EV_P)
1598{
1599 loop_destroy (EV_A);
1600 ev_free (loop);
1601}
1602
1603void
1604ev_loop_fork (EV_P)
1605{
1606 postfork = 1; /* must be in line with ev_default_fork */
1607}
1608 3116
1609#if EV_VERIFY 3117#if EV_VERIFY
1610static void noinline 3118noinline ecb_cold
3119static void
1611verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
1612{ 3121{
1613 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));
1614 3123
1615 if (w->pending) 3124 if (w->pending)
1616 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));
1617} 3126}
1618 3127
1619static void noinline 3128noinline ecb_cold
3129static void
1620verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
1621{ 3131{
1622 int i; 3132 int i;
1623 3133
1624 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1629 3139
1630 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1631 } 3141 }
1632} 3142}
1633 3143
1634static void noinline 3144noinline ecb_cold
3145static void
1635array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
1636{ 3147{
1637 while (cnt--) 3148 while (cnt--)
1638 { 3149 {
1639 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1640 verify_watcher (EV_A_ ws [cnt]); 3151 verify_watcher (EV_A_ ws [cnt]);
1641 } 3152 }
1642} 3153}
1643#endif 3154#endif
1644 3155
1645void 3156#if EV_FEATURE_API
1646ev_loop_verify (EV_P) 3157void ecb_cold
3158ev_verify (EV_P) EV_NOEXCEPT
1647{ 3159{
1648#if EV_VERIFY 3160#if EV_VERIFY
1649 int i; 3161 int i;
1650 WL w; 3162 WL w, w2;
1651 3163
1652 assert (activecnt >= -1); 3164 assert (activecnt >= -1);
1653 3165
1654 assert (fdchangemax >= fdchangecnt); 3166 assert (fdchangemax >= fdchangecnt);
1655 for (i = 0; i < fdchangecnt; ++i) 3167 for (i = 0; i < fdchangecnt; ++i)
1656 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3168 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1657 3169
1658 assert (anfdmax >= 0); 3170 assert (anfdmax >= 0);
1659 for (i = 0; i < anfdmax; ++i) 3171 for (i = 0; i < anfdmax; ++i)
3172 {
3173 int j = 0;
3174
1660 for (w = anfds [i].head; w; w = w->next) 3175 for (w = w2 = anfds [i].head; w; w = w->next)
1661 { 3176 {
1662 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
1663 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));
1664 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));
1665 } 3187 }
3188 }
1666 3189
1667 assert (timermax >= timercnt); 3190 assert (timermax >= timercnt);
1668 verify_heap (EV_A_ timers, timercnt); 3191 verify_heap (EV_A_ timers, timercnt);
1669 3192
1670#if EV_PERIODIC_ENABLE 3193#if EV_PERIODIC_ENABLE
… …
1685#if EV_FORK_ENABLE 3208#if EV_FORK_ENABLE
1686 assert (forkmax >= forkcnt); 3209 assert (forkmax >= forkcnt);
1687 array_verify (EV_A_ (W *)forks, forkcnt); 3210 array_verify (EV_A_ (W *)forks, forkcnt);
1688#endif 3211#endif
1689 3212
3213#if EV_CLEANUP_ENABLE
3214 assert (cleanupmax >= cleanupcnt);
3215 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3216#endif
3217
1690#if EV_ASYNC_ENABLE 3218#if EV_ASYNC_ENABLE
1691 assert (asyncmax >= asynccnt); 3219 assert (asyncmax >= asynccnt);
1692 array_verify (EV_A_ (W *)asyncs, asynccnt); 3220 array_verify (EV_A_ (W *)asyncs, asynccnt);
1693#endif 3221#endif
1694 3222
3223#if EV_PREPARE_ENABLE
1695 assert (preparemax >= preparecnt); 3224 assert (preparemax >= preparecnt);
1696 array_verify (EV_A_ (W *)prepares, preparecnt); 3225 array_verify (EV_A_ (W *)prepares, preparecnt);
3226#endif
1697 3227
3228#if EV_CHECK_ENABLE
1698 assert (checkmax >= checkcnt); 3229 assert (checkmax >= checkcnt);
1699 array_verify (EV_A_ (W *)checks, checkcnt); 3230 array_verify (EV_A_ (W *)checks, checkcnt);
3231#endif
1700 3232
1701# if 0 3233# if 0
3234#if EV_CHILD_ENABLE
1702 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)
1703 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3236 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3237#endif
1704# endif 3238# endif
1705#endif 3239#endif
1706} 3240}
1707 3241#endif
1708#endif /* multiplicity */
1709 3242
1710#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
1711struct ev_loop * 3245struct ev_loop *
1712ev_default_loop_init (unsigned int flags)
1713#else 3246#else
1714int 3247int
3248#endif
1715ev_default_loop (unsigned int flags) 3249ev_default_loop (unsigned int flags) EV_NOEXCEPT
1716#endif
1717{ 3250{
1718 if (!ev_default_loop_ptr) 3251 if (!ev_default_loop_ptr)
1719 { 3252 {
1720#if EV_MULTIPLICITY 3253#if EV_MULTIPLICITY
1721 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3254 EV_P = ev_default_loop_ptr = &default_loop_struct;
1722#else 3255#else
1723 ev_default_loop_ptr = 1; 3256 ev_default_loop_ptr = 1;
1724#endif 3257#endif
1725 3258
1726 loop_init (EV_A_ flags); 3259 loop_init (EV_A_ flags);
1727 3260
1728 if (ev_backend (EV_A)) 3261 if (ev_backend (EV_A))
1729 { 3262 {
1730#ifndef _WIN32 3263#if EV_CHILD_ENABLE
1731 ev_signal_init (&childev, childcb, SIGCHLD); 3264 ev_signal_init (&childev, childcb, SIGCHLD);
1732 ev_set_priority (&childev, EV_MAXPRI); 3265 ev_set_priority (&childev, EV_MAXPRI);
1733 ev_signal_start (EV_A_ &childev); 3266 ev_signal_start (EV_A_ &childev);
1734 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3267 ev_unref (EV_A); /* child watcher should not keep loop alive */
1735#endif 3268#endif
… …
1740 3273
1741 return ev_default_loop_ptr; 3274 return ev_default_loop_ptr;
1742} 3275}
1743 3276
1744void 3277void
1745ev_default_destroy (void) 3278ev_loop_fork (EV_P) EV_NOEXCEPT
1746{ 3279{
1747#if EV_MULTIPLICITY 3280 postfork = 1;
1748 struct ev_loop *loop = ev_default_loop_ptr;
1749#endif
1750
1751 ev_default_loop_ptr = 0;
1752
1753#ifndef _WIN32
1754 ev_ref (EV_A); /* child watcher */
1755 ev_signal_stop (EV_A_ &childev);
1756#endif
1757
1758 loop_destroy (EV_A);
1759}
1760
1761void
1762ev_default_fork (void)
1763{
1764#if EV_MULTIPLICITY
1765 struct ev_loop *loop = ev_default_loop_ptr;
1766#endif
1767
1768 postfork = 1; /* must be in line with ev_loop_fork */
1769} 3281}
1770 3282
1771/*****************************************************************************/ 3283/*****************************************************************************/
1772 3284
1773void 3285void
1774ev_invoke (EV_P_ void *w, int revents) 3286ev_invoke (EV_P_ void *w, int revents)
1775{ 3287{
1776 EV_CB_INVOKE ((W)w, revents); 3288 EV_CB_INVOKE ((W)w, revents);
1777} 3289}
1778 3290
1779inline_speed void 3291unsigned int
1780call_pending (EV_P) 3292ev_pending_count (EV_P) EV_NOEXCEPT
1781{ 3293{
1782 int pri; 3294 int pri;
3295 unsigned int count = 0;
1783 3296
1784 for (pri = NUMPRI; pri--; ) 3297 for (pri = NUMPRI; pri--; )
3298 count += pendingcnt [pri];
3299
3300 return count;
3301}
3302
3303noinline
3304void
3305ev_invoke_pending (EV_P)
3306{
3307 pendingpri = NUMPRI;
3308
3309 do
3310 {
3311 --pendingpri;
3312
3313 /* pendingpri possibly gets modified in the inner loop */
1785 while (pendingcnt [pri]) 3314 while (pendingcnt [pendingpri])
1786 { 3315 {
1787 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3316 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1788 3317
1789 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1790 /* ^ this is no longer true, as pending_w could be here */
1791
1792 p->w->pending = 0; 3318 p->w->pending = 0;
1793 EV_CB_INVOKE (p->w, p->events); 3319 EV_CB_INVOKE (p->w, p->events);
1794 EV_FREQUENT_CHECK; 3320 EV_FREQUENT_CHECK;
1795 } 3321 }
3322 }
3323 while (pendingpri);
1796} 3324}
1797 3325
1798#if EV_IDLE_ENABLE 3326#if EV_IDLE_ENABLE
1799/* make idle watchers pending. this handles the "call-idle */ 3327/* make idle watchers pending. this handles the "call-idle */
1800/* only when higher priorities are idle" logic */ 3328/* only when higher priorities are idle" logic */
… …
1852 EV_FREQUENT_CHECK; 3380 EV_FREQUENT_CHECK;
1853 feed_reverse (EV_A_ (W)w); 3381 feed_reverse (EV_A_ (W)w);
1854 } 3382 }
1855 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3383 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856 3384
1857 feed_reverse_done (EV_A_ EV_TIMEOUT); 3385 feed_reverse_done (EV_A_ EV_TIMER);
1858 } 3386 }
1859} 3387}
1860 3388
1861#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
1862/* make periodics pending */ 3416/* make periodics pending */
1863inline_size void 3417inline_size void
1864periodics_reify (EV_P) 3418periodics_reify (EV_P)
1865{ 3419{
1866 EV_FREQUENT_CHECK; 3420 EV_FREQUENT_CHECK;
1867 3421
1868 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3422 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1869 { 3423 {
1870 int feed_count = 0;
1871
1872 do 3424 do
1873 { 3425 {
1874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3426 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1875 3427
1876 /*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)));*/
… …
1885 ANHE_at_cache (periodics [HEAP0]); 3437 ANHE_at_cache (periodics [HEAP0]);
1886 downheap (periodics, periodiccnt, HEAP0); 3438 downheap (periodics, periodiccnt, HEAP0);
1887 } 3439 }
1888 else if (w->interval) 3440 else if (w->interval)
1889 { 3441 {
1890 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3442 periodic_recalc (EV_A_ w);
1891 /* if next trigger time is not sufficiently in the future, put it there */
1892 /* this might happen because of floating point inexactness */
1893 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1894 {
1895 ev_at (w) += w->interval;
1896
1897 /* if interval is unreasonably low we might still have a time in the past */
1898 /* so correct this. this will make the periodic very inexact, but the user */
1899 /* has effectively asked to get triggered more often than possible */
1900 if (ev_at (w) < ev_rt_now)
1901 ev_at (w) = ev_rt_now;
1902 }
1903
1904 ANHE_at_cache (periodics [HEAP0]); 3443 ANHE_at_cache (periodics [HEAP0]);
1905 downheap (periodics, periodiccnt, HEAP0); 3444 downheap (periodics, periodiccnt, HEAP0);
1906 } 3445 }
1907 else 3446 else
1908 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3447 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1915 feed_reverse_done (EV_A_ EV_PERIODIC); 3454 feed_reverse_done (EV_A_ EV_PERIODIC);
1916 } 3455 }
1917} 3456}
1918 3457
1919/* simply recalculate all periodics */ 3458/* simply recalculate all periodics */
1920/* 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? */
1921static void noinline 3460noinline ecb_cold
3461static void
1922periodics_reschedule (EV_P) 3462periodics_reschedule (EV_P)
1923{ 3463{
1924 int i; 3464 int i;
1925 3465
1926 /* adjust periodics after time jump */ 3466 /* adjust periodics after time jump */
… …
1929 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3469 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1930 3470
1931 if (w->reschedule_cb) 3471 if (w->reschedule_cb)
1932 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3472 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 3473 else if (w->interval)
1934 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3474 periodic_recalc (EV_A_ w);
1935 3475
1936 ANHE_at_cache (periodics [i]); 3476 ANHE_at_cache (periodics [i]);
1937 } 3477 }
1938 3478
1939 reheap (periodics, periodiccnt); 3479 reheap (periodics, periodiccnt);
1940} 3480}
1941#endif 3481#endif
1942 3482
1943/* adjust all timers by a given offset */ 3483/* adjust all timers by a given offset */
1944static void noinline 3484noinline ecb_cold
3485static void
1945timers_reschedule (EV_P_ ev_tstamp adjust) 3486timers_reschedule (EV_P_ ev_tstamp adjust)
1946{ 3487{
1947 int i; 3488 int i;
1948 3489
1949 for (i = 0; i < timercnt; ++i) 3490 for (i = 0; i < timercnt; ++i)
… …
1953 ANHE_at_cache (*he); 3494 ANHE_at_cache (*he);
1954 } 3495 }
1955} 3496}
1956 3497
1957/* fetch new monotonic and realtime times from the kernel */ 3498/* fetch new monotonic and realtime times from the kernel */
1958/* also detetc if there was a timejump, and act accordingly */ 3499/* also detect if there was a timejump, and act accordingly */
1959inline_speed void 3500inline_speed void
1960time_update (EV_P_ ev_tstamp max_block) 3501time_update (EV_P_ ev_tstamp max_block)
1961{ 3502{
1962#if EV_USE_MONOTONIC 3503#if EV_USE_MONOTONIC
1963 if (expect_true (have_monotonic)) 3504 if (expect_true (have_monotonic))
… …
1986 * 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
1987 * in the unlikely event of having been preempted here. 3528 * in the unlikely event of having been preempted here.
1988 */ 3529 */
1989 for (i = 4; --i; ) 3530 for (i = 4; --i; )
1990 { 3531 {
3532 ev_tstamp diff;
1991 rtmn_diff = ev_rt_now - mn_now; 3533 rtmn_diff = ev_rt_now - mn_now;
1992 3534
3535 diff = odiff - rtmn_diff;
3536
1993 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3537 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1994 return; /* all is well */ 3538 return; /* all is well */
1995 3539
1996 ev_rt_now = ev_time (); 3540 ev_rt_now = ev_time ();
1997 mn_now = get_clock (); 3541 mn_now = get_clock ();
1998 now_floor = mn_now; 3542 now_floor = mn_now;
… …
2020 3564
2021 mn_now = ev_rt_now; 3565 mn_now = ev_rt_now;
2022 } 3566 }
2023} 3567}
2024 3568
2025static int loop_done; 3569int
2026
2027void
2028ev_loop (EV_P_ int flags) 3570ev_run (EV_P_ int flags)
2029{ 3571{
3572#if EV_FEATURE_API
3573 ++loop_depth;
3574#endif
3575
3576 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3577
2030 loop_done = EVUNLOOP_CANCEL; 3578 loop_done = EVBREAK_CANCEL;
2031 3579
2032 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3580 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033 3581
2034 do 3582 do
2035 { 3583 {
2036#if EV_VERIFY >= 2 3584#if EV_VERIFY >= 2
2037 ev_loop_verify (EV_A); 3585 ev_verify (EV_A);
2038#endif 3586#endif
2039 3587
2040#ifndef _WIN32 3588#ifndef _WIN32
2041 if (expect_false (curpid)) /* penalise the forking check even more */ 3589 if (expect_false (curpid)) /* penalise the forking check even more */
2042 if (expect_false (getpid () != curpid)) 3590 if (expect_false (getpid () != curpid))
… …
2050 /* we might have forked, so queue fork handlers */ 3598 /* we might have forked, so queue fork handlers */
2051 if (expect_false (postfork)) 3599 if (expect_false (postfork))
2052 if (forkcnt) 3600 if (forkcnt)
2053 { 3601 {
2054 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3602 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055 call_pending (EV_A); 3603 EV_INVOKE_PENDING;
2056 } 3604 }
2057#endif 3605#endif
2058 3606
3607#if EV_PREPARE_ENABLE
2059 /* queue prepare watchers (and execute them) */ 3608 /* queue prepare watchers (and execute them) */
2060 if (expect_false (preparecnt)) 3609 if (expect_false (preparecnt))
2061 { 3610 {
2062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3611 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063 call_pending (EV_A); 3612 EV_INVOKE_PENDING;
2064 } 3613 }
3614#endif
3615
3616 if (expect_false (loop_done))
3617 break;
2065 3618
2066 /* we might have forked, so reify kernel state if necessary */ 3619 /* we might have forked, so reify kernel state if necessary */
2067 if (expect_false (postfork)) 3620 if (expect_false (postfork))
2068 loop_fork (EV_A); 3621 loop_fork (EV_A);
2069 3622
… …
2073 /* calculate blocking time */ 3626 /* calculate blocking time */
2074 { 3627 {
2075 ev_tstamp waittime = 0.; 3628 ev_tstamp waittime = 0.;
2076 ev_tstamp sleeptime = 0.; 3629 ev_tstamp sleeptime = 0.;
2077 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
2078 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3642 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2079 { 3643 {
2080 /* remember old timestamp for io_blocktime calculation */
2081 ev_tstamp prev_mn_now = mn_now;
2082
2083 /* update time to cancel out callback processing overhead */
2084 time_update (EV_A_ 1e100);
2085
2086 waittime = MAX_BLOCKTIME; 3644 waittime = MAX_BLOCKTIME;
2087 3645
2088 if (timercnt) 3646 if (timercnt)
2089 { 3647 {
2090 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3648 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2091 if (waittime > to) waittime = to; 3649 if (waittime > to) waittime = to;
2092 } 3650 }
2093 3651
2094#if EV_PERIODIC_ENABLE 3652#if EV_PERIODIC_ENABLE
2095 if (periodiccnt) 3653 if (periodiccnt)
2096 { 3654 {
2097 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3655 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2098 if (waittime > to) waittime = to; 3656 if (waittime > to) waittime = to;
2099 } 3657 }
2100#endif 3658#endif
2101 3659
2102 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3660 /* don't let timeouts decrease the waittime below timeout_blocktime */
2103 if (expect_false (waittime < timeout_blocktime)) 3661 if (expect_false (waittime < timeout_blocktime))
2104 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;
2105 3668
2106 /* extra check because io_blocktime is commonly 0 */ 3669 /* extra check because io_blocktime is commonly 0 */
2107 if (expect_false (io_blocktime)) 3670 if (expect_false (io_blocktime))
2108 { 3671 {
2109 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3672 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2110 3673
2111 if (sleeptime > waittime - backend_fudge) 3674 if (sleeptime > waittime - backend_mintime)
2112 sleeptime = waittime - backend_fudge; 3675 sleeptime = waittime - backend_mintime;
2113 3676
2114 if (expect_true (sleeptime > 0.)) 3677 if (expect_true (sleeptime > 0.))
2115 { 3678 {
2116 ev_sleep (sleeptime); 3679 ev_sleep (sleeptime);
2117 waittime -= sleeptime; 3680 waittime -= sleeptime;
2118 } 3681 }
2119 } 3682 }
2120 } 3683 }
2121 3684
3685#if EV_FEATURE_API
2122 ++loop_count; 3686 ++loop_count;
3687#endif
3688 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2123 backend_poll (EV_A_ waittime); 3689 backend_poll (EV_A_ waittime);
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
2124 3701
2125 /* update ev_rt_now, do magic */ 3702 /* update ev_rt_now, do magic */
2126 time_update (EV_A_ waittime + sleeptime); 3703 time_update (EV_A_ waittime + sleeptime);
2127 } 3704 }
2128 3705
… …
2135#if EV_IDLE_ENABLE 3712#if EV_IDLE_ENABLE
2136 /* queue idle watchers unless other events are pending */ 3713 /* queue idle watchers unless other events are pending */
2137 idle_reify (EV_A); 3714 idle_reify (EV_A);
2138#endif 3715#endif
2139 3716
3717#if EV_CHECK_ENABLE
2140 /* queue check watchers, to be executed first */ 3718 /* queue check watchers, to be executed first */
2141 if (expect_false (checkcnt)) 3719 if (expect_false (checkcnt))
2142 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3720 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3721#endif
2143 3722
2144 call_pending (EV_A); 3723 EV_INVOKE_PENDING;
2145 } 3724 }
2146 while (expect_true ( 3725 while (expect_true (
2147 activecnt 3726 activecnt
2148 && !loop_done 3727 && !loop_done
2149 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3728 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2150 )); 3729 ));
2151 3730
2152 if (loop_done == EVUNLOOP_ONE) 3731 if (loop_done == EVBREAK_ONE)
2153 loop_done = EVUNLOOP_CANCEL; 3732 loop_done = EVBREAK_CANCEL;
2154}
2155 3733
3734#if EV_FEATURE_API
3735 --loop_depth;
3736#endif
3737
3738 return activecnt;
3739}
3740
2156void 3741void
2157ev_unloop (EV_P_ int how) 3742ev_break (EV_P_ int how) EV_NOEXCEPT
2158{ 3743{
2159 loop_done = how; 3744 loop_done = how;
2160} 3745}
2161 3746
2162void 3747void
2163ev_ref (EV_P) 3748ev_ref (EV_P) EV_NOEXCEPT
2164{ 3749{
2165 ++activecnt; 3750 ++activecnt;
2166} 3751}
2167 3752
2168void 3753void
2169ev_unref (EV_P) 3754ev_unref (EV_P) EV_NOEXCEPT
2170{ 3755{
2171 --activecnt; 3756 --activecnt;
2172} 3757}
2173 3758
2174void 3759void
2175ev_now_update (EV_P) 3760ev_now_update (EV_P) EV_NOEXCEPT
2176{ 3761{
2177 time_update (EV_A_ 1e100); 3762 time_update (EV_A_ 1e100);
2178} 3763}
2179 3764
2180void 3765void
2181ev_suspend (EV_P) 3766ev_suspend (EV_P) EV_NOEXCEPT
2182{ 3767{
2183 ev_now_update (EV_A); 3768 ev_now_update (EV_A);
2184} 3769}
2185 3770
2186void 3771void
2187ev_resume (EV_P) 3772ev_resume (EV_P) EV_NOEXCEPT
2188{ 3773{
2189 ev_tstamp mn_prev = mn_now; 3774 ev_tstamp mn_prev = mn_now;
2190 3775
2191 ev_now_update (EV_A); 3776 ev_now_update (EV_A);
2192 timers_reschedule (EV_A_ mn_now - mn_prev); 3777 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2209inline_size void 3794inline_size void
2210wlist_del (WL *head, WL elem) 3795wlist_del (WL *head, WL elem)
2211{ 3796{
2212 while (*head) 3797 while (*head)
2213 { 3798 {
2214 if (*head == elem) 3799 if (expect_true (*head == elem))
2215 { 3800 {
2216 *head = elem->next; 3801 *head = elem->next;
2217 return; 3802 break;
2218 } 3803 }
2219 3804
2220 head = &(*head)->next; 3805 head = &(*head)->next;
2221 } 3806 }
2222} 3807}
… …
2231 w->pending = 0; 3816 w->pending = 0;
2232 } 3817 }
2233} 3818}
2234 3819
2235int 3820int
2236ev_clear_pending (EV_P_ void *w) 3821ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2237{ 3822{
2238 W w_ = (W)w; 3823 W w_ = (W)w;
2239 int pending = w_->pending; 3824 int pending = w_->pending;
2240 3825
2241 if (expect_true (pending)) 3826 if (expect_true (pending))
… …
2250} 3835}
2251 3836
2252inline_size void 3837inline_size void
2253pri_adjust (EV_P_ W w) 3838pri_adjust (EV_P_ W w)
2254{ 3839{
2255 int pri = w->priority; 3840 int pri = ev_priority (w);
2256 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3841 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2257 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3842 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2258 w->priority = pri; 3843 ev_set_priority (w, pri);
2259} 3844}
2260 3845
2261inline_speed void 3846inline_speed void
2262ev_start (EV_P_ W w, int active) 3847ev_start (EV_P_ W w, int active)
2263{ 3848{
… …
2273 w->active = 0; 3858 w->active = 0;
2274} 3859}
2275 3860
2276/*****************************************************************************/ 3861/*****************************************************************************/
2277 3862
2278void noinline 3863noinline
3864void
2279ev_io_start (EV_P_ ev_io *w) 3865ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2280{ 3866{
2281 int fd = w->fd; 3867 int fd = w->fd;
2282 3868
2283 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
2284 return; 3870 return;
2285 3871
2286 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3872 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2287 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3873 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2288 3874
2289 EV_FREQUENT_CHECK; 3875 EV_FREQUENT_CHECK;
2290 3876
2291 ev_start (EV_A_ (W)w, 1); 3877 ev_start (EV_A_ (W)w, 1);
2292 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3878 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2293 wlist_add (&anfds[fd].head, (WL)w); 3879 wlist_add (&anfds[fd].head, (WL)w);
2294 3880
3881 /* common bug, apparently */
3882 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3883
2295 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3884 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2296 w->events &= ~EV__IOFDSET; 3885 w->events &= ~EV__IOFDSET;
2297 3886
2298 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
2299} 3888}
2300 3889
2301void noinline 3890noinline
3891void
2302ev_io_stop (EV_P_ ev_io *w) 3892ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2303{ 3893{
2304 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
2305 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
2306 return; 3896 return;
2307 3897
… …
2310 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
2311 3901
2312 wlist_del (&anfds[w->fd].head, (WL)w); 3902 wlist_del (&anfds[w->fd].head, (WL)w);
2313 ev_stop (EV_A_ (W)w); 3903 ev_stop (EV_A_ (W)w);
2314 3904
2315 fd_change (EV_A_ w->fd, 1); 3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2316 3906
2317 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
2318} 3908}
2319 3909
2320void noinline 3910noinline
3911void
2321ev_timer_start (EV_P_ ev_timer *w) 3912ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2322{ 3913{
2323 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
2324 return; 3915 return;
2325 3916
2326 ev_at (w) += mn_now; 3917 ev_at (w) += mn_now;
… …
2339 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
2340 3931
2341 /*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));*/
2342} 3933}
2343 3934
2344void noinline 3935noinline
3936void
2345ev_timer_stop (EV_P_ ev_timer *w) 3937ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2346{ 3938{
2347 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
2348 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
2349 return; 3941 return;
2350 3942
… …
2362 timers [active] = timers [timercnt + HEAP0]; 3954 timers [active] = timers [timercnt + HEAP0];
2363 adjustheap (timers, timercnt, active); 3955 adjustheap (timers, timercnt, active);
2364 } 3956 }
2365 } 3957 }
2366 3958
2367 EV_FREQUENT_CHECK;
2368
2369 ev_at (w) -= mn_now; 3959 ev_at (w) -= mn_now;
2370 3960
2371 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
2372}
2373 3962
3963 EV_FREQUENT_CHECK;
3964}
3965
2374void noinline 3966noinline
3967void
2375ev_timer_again (EV_P_ ev_timer *w) 3968ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2376{ 3969{
2377 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3971
3972 clear_pending (EV_A_ (W)w);
2378 3973
2379 if (ev_is_active (w)) 3974 if (ev_is_active (w))
2380 { 3975 {
2381 if (w->repeat) 3976 if (w->repeat)
2382 { 3977 {
… …
2394 } 3989 }
2395 3990
2396 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
2397} 3992}
2398 3993
3994ev_tstamp
3995ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3996{
3997 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3998}
3999
2399#if EV_PERIODIC_ENABLE 4000#if EV_PERIODIC_ENABLE
2400void noinline 4001noinline
4002void
2401ev_periodic_start (EV_P_ ev_periodic *w) 4003ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2402{ 4004{
2403 if (expect_false (ev_is_active (w))) 4005 if (expect_false (ev_is_active (w)))
2404 return; 4006 return;
2405 4007
2406 if (w->reschedule_cb) 4008 if (w->reschedule_cb)
2407 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4009 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2408 else if (w->interval) 4010 else if (w->interval)
2409 { 4011 {
2410 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.));
2411 /* this formula differs from the one in periodic_reify because we do not always round up */ 4013 periodic_recalc (EV_A_ w);
2412 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2413 } 4014 }
2414 else 4015 else
2415 ev_at (w) = w->offset; 4016 ev_at (w) = w->offset;
2416 4017
2417 EV_FREQUENT_CHECK; 4018 EV_FREQUENT_CHECK;
… …
2426 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
2427 4028
2428 /*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));*/
2429} 4030}
2430 4031
2431void noinline 4032noinline
4033void
2432ev_periodic_stop (EV_P_ ev_periodic *w) 4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2433{ 4035{
2434 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
2435 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
2436 return; 4038 return;
2437 4039
… …
2449 periodics [active] = periodics [periodiccnt + HEAP0]; 4051 periodics [active] = periodics [periodiccnt + HEAP0];
2450 adjustheap (periodics, periodiccnt, active); 4052 adjustheap (periodics, periodiccnt, active);
2451 } 4053 }
2452 } 4054 }
2453 4055
2454 EV_FREQUENT_CHECK;
2455
2456 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
2457}
2458 4057
4058 EV_FREQUENT_CHECK;
4059}
4060
2459void noinline 4061noinline
4062void
2460ev_periodic_again (EV_P_ ev_periodic *w) 4063ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2461{ 4064{
2462 /* TODO: use adjustheap and recalculation */ 4065 /* TODO: use adjustheap and recalculation */
2463 ev_periodic_stop (EV_A_ w); 4066 ev_periodic_stop (EV_A_ w);
2464 ev_periodic_start (EV_A_ w); 4067 ev_periodic_start (EV_A_ w);
2465} 4068}
… …
2467 4070
2468#ifndef SA_RESTART 4071#ifndef SA_RESTART
2469# define SA_RESTART 0 4072# define SA_RESTART 0
2470#endif 4073#endif
2471 4074
4075#if EV_SIGNAL_ENABLE
4076
2472void noinline 4077noinline
4078void
2473ev_signal_start (EV_P_ ev_signal *w) 4079ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2474{ 4080{
2475#if EV_MULTIPLICITY
2476 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2477#endif
2478 if (expect_false (ev_is_active (w))) 4081 if (expect_false (ev_is_active (w)))
2479 return; 4082 return;
2480 4083
2481 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));
2482 4085
2483 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));
2484 4089
2485 EV_FREQUENT_CHECK; 4090 signals [w->signum - 1].loop = EV_A;
4091 ECB_MEMORY_FENCE_RELEASE;
4092#endif
2486 4093
4094 EV_FREQUENT_CHECK;
4095
4096#if EV_USE_SIGNALFD
4097 if (sigfd == -2)
2487 { 4098 {
2488#ifndef _WIN32 4099 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2489 sigset_t full, prev; 4100 if (sigfd < 0 && errno == EINVAL)
2490 sigfillset (&full); 4101 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2491 sigprocmask (SIG_SETMASK, &full, &prev);
2492#endif
2493 4102
2494 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 */
2495 4106
2496#ifndef _WIN32 4107 sigemptyset (&sigfd_set);
2497 sigprocmask (SIG_SETMASK, &prev, 0); 4108
2498#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 }
2499 } 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
2500 4125
2501 ev_start (EV_A_ (W)w, 1); 4126 ev_start (EV_A_ (W)w, 1);
2502 wlist_add (&signals [w->signum - 1].head, (WL)w); 4127 wlist_add (&signals [w->signum - 1].head, (WL)w);
2503 4128
2504 if (!((WL)w)->next) 4129 if (!((WL)w)->next)
4130# if EV_USE_SIGNALFD
4131 if (sigfd < 0) /*TODO*/
4132# endif
2505 { 4133 {
2506#if _WIN32 4134# ifdef _WIN32
4135 evpipe_init (EV_A);
4136
2507 signal (w->signum, ev_sighandler); 4137 signal (w->signum, ev_sighandler);
2508#else 4138# else
2509 struct sigaction sa; 4139 struct sigaction sa;
4140
4141 evpipe_init (EV_A);
4142
2510 sa.sa_handler = ev_sighandler; 4143 sa.sa_handler = ev_sighandler;
2511 sigfillset (&sa.sa_mask); 4144 sigfillset (&sa.sa_mask);
2512 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 */
2513 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 }
2514#endif 4154#endif
2515 } 4155 }
2516 4156
2517 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
2518} 4158}
2519 4159
2520void noinline 4160noinline
4161void
2521ev_signal_stop (EV_P_ ev_signal *w) 4162ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2522{ 4163{
2523 clear_pending (EV_A_ (W)w); 4164 clear_pending (EV_A_ (W)w);
2524 if (expect_false (!ev_is_active (w))) 4165 if (expect_false (!ev_is_active (w)))
2525 return; 4166 return;
2526 4167
… …
2528 4169
2529 wlist_del (&signals [w->signum - 1].head, (WL)w); 4170 wlist_del (&signals [w->signum - 1].head, (WL)w);
2530 ev_stop (EV_A_ (W)w); 4171 ev_stop (EV_A_ (W)w);
2531 4172
2532 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
2533 signal (w->signum, SIG_DFL); 4192 signal (w->signum, SIG_DFL);
4193 }
2534 4194
2535 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
2536} 4196}
2537 4197
4198#endif
4199
4200#if EV_CHILD_ENABLE
4201
2538void 4202void
2539ev_child_start (EV_P_ ev_child *w) 4203ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2540{ 4204{
2541#if EV_MULTIPLICITY 4205#if EV_MULTIPLICITY
2542 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));
2543#endif 4207#endif
2544 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
2545 return; 4209 return;
2546 4210
2547 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
2548 4212
2549 ev_start (EV_A_ (W)w, 1); 4213 ev_start (EV_A_ (W)w, 1);
2550 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4214 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2551 4215
2552 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
2553} 4217}
2554 4218
2555void 4219void
2556ev_child_stop (EV_P_ ev_child *w) 4220ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2557{ 4221{
2558 clear_pending (EV_A_ (W)w); 4222 clear_pending (EV_A_ (W)w);
2559 if (expect_false (!ev_is_active (w))) 4223 if (expect_false (!ev_is_active (w)))
2560 return; 4224 return;
2561 4225
2562 EV_FREQUENT_CHECK; 4226 EV_FREQUENT_CHECK;
2563 4227
2564 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4228 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2565 ev_stop (EV_A_ (W)w); 4229 ev_stop (EV_A_ (W)w);
2566 4230
2567 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
2568} 4232}
4233
4234#endif
2569 4235
2570#if EV_STAT_ENABLE 4236#if EV_STAT_ENABLE
2571 4237
2572# ifdef _WIN32 4238# ifdef _WIN32
2573# undef lstat 4239# undef lstat
… …
2576 4242
2577#define DEF_STAT_INTERVAL 5.0074891 4243#define DEF_STAT_INTERVAL 5.0074891
2578#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2579#define MIN_STAT_INTERVAL 0.1074891 4245#define MIN_STAT_INTERVAL 0.1074891
2580 4246
2581static 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);
2582 4248
2583#if EV_USE_INOTIFY 4249#if EV_USE_INOTIFY
2584# define EV_INOTIFY_BUFSIZE 8192
2585 4250
2586static 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
2587infy_add (EV_P_ ev_stat *w) 4256infy_add (EV_P_ ev_stat *w)
2588{ 4257{
2589 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 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);
2590 4262
2591 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 */
2592 { 4289 }
4290 else
4291 {
4292 /* can't use inotify, continue to stat */
2593 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4293 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2594 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2595 4294
2596 /* monitor some parent directory for speedup hints */ 4295 /* if path is not there, monitor some parent directory for speedup hints */
2597 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4296 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2598 /* but an efficiency issue only */ 4297 /* but an efficiency issue only */
2599 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4298 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2600 { 4299 {
2601 char path [4096]; 4300 char path [4096];
… …
2611 if (!pend || pend == path) 4310 if (!pend || pend == path)
2612 break; 4311 break;
2613 4312
2614 *pend = 0; 4313 *pend = 0;
2615 w->wd = inotify_add_watch (fs_fd, path, mask); 4314 w->wd = inotify_add_watch (fs_fd, path, mask);
2616 } 4315 }
2617 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4316 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2618 } 4317 }
2619 } 4318 }
2620 4319
2621 if (w->wd >= 0) 4320 if (w->wd >= 0)
2622 {
2623 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);
2624 4322
2625 /* now local changes will be tracked by inotify, but remote changes won't */ 4323 /* now re-arm timer, if required */
2626 /* unless the filesystem it known to be local, we therefore still poll */ 4324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2627 /* also do poll on <2.6.25, but with normal frequency */
2628 struct statfs sfs;
2629
2630 if (fs_2625 && !statfs (w->path, &sfs))
2631 if (sfs.f_type == 0x1373 /* devfs */
2632 || sfs.f_type == 0xEF53 /* ext2/3 */
2633 || sfs.f_type == 0x3153464a /* jfs */
2634 || sfs.f_type == 0x52654973 /* reiser3 */
2635 || sfs.f_type == 0x01021994 /* tempfs */
2636 || sfs.f_type == 0x58465342 /* xfs */)
2637 return;
2638
2639 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2640 ev_timer_again (EV_A_ &w->timer); 4325 ev_timer_again (EV_A_ &w->timer);
2641 } 4326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2642} 4327}
2643 4328
2644static void noinline 4329noinline
4330static void
2645infy_del (EV_P_ ev_stat *w) 4331infy_del (EV_P_ ev_stat *w)
2646{ 4332{
2647 int slot; 4333 int slot;
2648 int wd = w->wd; 4334 int wd = w->wd;
2649 4335
2650 if (wd < 0) 4336 if (wd < 0)
2651 return; 4337 return;
2652 4338
2653 w->wd = -2; 4339 w->wd = -2;
2654 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4340 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2655 wlist_del (&fs_hash [slot].head, (WL)w); 4341 wlist_del (&fs_hash [slot].head, (WL)w);
2656 4342
2657 /* remove this watcher, if others are watching it, they will rearm */ 4343 /* remove this watcher, if others are watching it, they will rearm */
2658 inotify_rm_watch (fs_fd, wd); 4344 inotify_rm_watch (fs_fd, wd);
2659} 4345}
2660 4346
2661static void noinline 4347noinline
4348static void
2662infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2663{ 4350{
2664 if (slot < 0) 4351 if (slot < 0)
2665 /* overflow, need to check for all hash slots */ 4352 /* overflow, need to check for all hash slots */
2666 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4353 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2667 infy_wd (EV_A_ slot, wd, ev); 4354 infy_wd (EV_A_ slot, wd, ev);
2668 else 4355 else
2669 { 4356 {
2670 WL w_; 4357 WL w_;
2671 4358
2672 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4359 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2673 { 4360 {
2674 ev_stat *w = (ev_stat *)w_; 4361 ev_stat *w = (ev_stat *)w_;
2675 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 */
2676 4363
2677 if (w->wd == wd || wd == -1) 4364 if (w->wd == wd || wd == -1)
2678 { 4365 {
2679 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4366 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2680 { 4367 {
2681 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);
2682 w->wd = -1; 4369 w->wd = -1;
2683 infy_add (EV_A_ w); /* re-add, no matter what */ 4370 infy_add (EV_A_ w); /* re-add, no matter what */
2684 } 4371 }
2685 4372
2686 stat_timer_cb (EV_A_ &w->timer, 0); 4373 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2691 4378
2692static void 4379static void
2693infy_cb (EV_P_ ev_io *w, int revents) 4380infy_cb (EV_P_ ev_io *w, int revents)
2694{ 4381{
2695 char buf [EV_INOTIFY_BUFSIZE]; 4382 char buf [EV_INOTIFY_BUFSIZE];
2696 struct inotify_event *ev = (struct inotify_event *)buf;
2697 int ofs; 4383 int ofs;
2698 int len = read (fs_fd, buf, sizeof (buf)); 4384 int len = read (fs_fd, buf, sizeof (buf));
2699 4385
2700 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);
2701 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 }
2702} 4392}
2703 4393
2704inline_size void 4394inline_size ecb_cold
4395void
2705check_2625 (EV_P) 4396ev_check_2625 (EV_P)
2706{ 4397{
2707 /* kernels < 2.6.25 are borked 4398 /* kernels < 2.6.25 are borked
2708 * 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
2709 */ 4400 */
2710 struct utsname buf; 4401 if (ev_linux_version () < 0x020619)
2711 int major, minor, micro;
2712
2713 if (uname (&buf))
2714 return; 4402 return;
2715 4403
2716 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2717 return;
2718
2719 if (major < 2
2720 || (major == 2 && minor < 6)
2721 || (major == 2 && minor == 6 && micro < 25))
2722 return;
2723
2724 fs_2625 = 1; 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 ();
2725} 4416}
2726 4417
2727inline_size void 4418inline_size void
2728infy_init (EV_P) 4419infy_init (EV_P)
2729{ 4420{
2730 if (fs_fd != -2) 4421 if (fs_fd != -2)
2731 return; 4422 return;
2732 4423
2733 fs_fd = -1; 4424 fs_fd = -1;
2734 4425
2735 check_2625 (EV_A); 4426 ev_check_2625 (EV_A);
2736 4427
2737 fs_fd = inotify_init (); 4428 fs_fd = infy_newfd ();
2738 4429
2739 if (fs_fd >= 0) 4430 if (fs_fd >= 0)
2740 { 4431 {
4432 fd_intern (fs_fd);
2741 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4433 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2742 ev_set_priority (&fs_w, EV_MAXPRI); 4434 ev_set_priority (&fs_w, EV_MAXPRI);
2743 ev_io_start (EV_A_ &fs_w); 4435 ev_io_start (EV_A_ &fs_w);
4436 ev_unref (EV_A);
2744 } 4437 }
2745} 4438}
2746 4439
2747inline_size void 4440inline_size void
2748infy_fork (EV_P) 4441infy_fork (EV_P)
… …
2750 int slot; 4443 int slot;
2751 4444
2752 if (fs_fd < 0) 4445 if (fs_fd < 0)
2753 return; 4446 return;
2754 4447
4448 ev_ref (EV_A);
4449 ev_io_stop (EV_A_ &fs_w);
2755 close (fs_fd); 4450 close (fs_fd);
2756 fs_fd = inotify_init (); 4451 fs_fd = infy_newfd ();
2757 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
2758 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4461 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2759 { 4462 {
2760 WL w_ = fs_hash [slot].head; 4463 WL w_ = fs_hash [slot].head;
2761 fs_hash [slot].head = 0; 4464 fs_hash [slot].head = 0;
2762 4465
2763 while (w_) 4466 while (w_)
… …
2768 w->wd = -1; 4471 w->wd = -1;
2769 4472
2770 if (fs_fd >= 0) 4473 if (fs_fd >= 0)
2771 infy_add (EV_A_ w); /* re-add, no matter what */ 4474 infy_add (EV_A_ w); /* re-add, no matter what */
2772 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);
2773 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 }
2774 } 4482 }
2775 } 4483 }
2776} 4484}
2777 4485
2778#endif 4486#endif
… …
2782#else 4490#else
2783# define EV_LSTAT(p,b) lstat (p, b) 4491# define EV_LSTAT(p,b) lstat (p, b)
2784#endif 4492#endif
2785 4493
2786void 4494void
2787ev_stat_stat (EV_P_ ev_stat *w) 4495ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2788{ 4496{
2789 if (lstat (w->path, &w->attr) < 0) 4497 if (lstat (w->path, &w->attr) < 0)
2790 w->attr.st_nlink = 0; 4498 w->attr.st_nlink = 0;
2791 else if (!w->attr.st_nlink) 4499 else if (!w->attr.st_nlink)
2792 w->attr.st_nlink = 1; 4500 w->attr.st_nlink = 1;
2793} 4501}
2794 4502
2795static void noinline 4503noinline
4504static void
2796stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4505stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2797{ 4506{
2798 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2799 4508
2800 /* we copy this here each the time so that */ 4509 ev_statdata prev = w->attr;
2801 /* prev has the old value when the callback gets invoked */
2802 w->prev = w->attr;
2803 ev_stat_stat (EV_A_ w); 4510 ev_stat_stat (EV_A_ w);
2804 4511
2805 /* 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 */
2806 if ( 4513 if (
2807 w->prev.st_dev != w->attr.st_dev 4514 prev.st_dev != w->attr.st_dev
2808 || w->prev.st_ino != w->attr.st_ino 4515 || prev.st_ino != w->attr.st_ino
2809 || w->prev.st_mode != w->attr.st_mode 4516 || prev.st_mode != w->attr.st_mode
2810 || w->prev.st_nlink != w->attr.st_nlink 4517 || prev.st_nlink != w->attr.st_nlink
2811 || w->prev.st_uid != w->attr.st_uid 4518 || prev.st_uid != w->attr.st_uid
2812 || w->prev.st_gid != w->attr.st_gid 4519 || prev.st_gid != w->attr.st_gid
2813 || w->prev.st_rdev != w->attr.st_rdev 4520 || prev.st_rdev != w->attr.st_rdev
2814 || w->prev.st_size != w->attr.st_size 4521 || prev.st_size != w->attr.st_size
2815 || w->prev.st_atime != w->attr.st_atime 4522 || prev.st_atime != w->attr.st_atime
2816 || w->prev.st_mtime != w->attr.st_mtime 4523 || prev.st_mtime != w->attr.st_mtime
2817 || w->prev.st_ctime != w->attr.st_ctime 4524 || prev.st_ctime != w->attr.st_ctime
2818 ) { 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
2819 #if EV_USE_INOTIFY 4531 #if EV_USE_INOTIFY
2820 if (fs_fd >= 0) 4532 if (fs_fd >= 0)
2821 { 4533 {
2822 infy_del (EV_A_ w); 4534 infy_del (EV_A_ w);
2823 infy_add (EV_A_ w); 4535 infy_add (EV_A_ w);
… …
2828 ev_feed_event (EV_A_ w, EV_STAT); 4540 ev_feed_event (EV_A_ w, EV_STAT);
2829 } 4541 }
2830} 4542}
2831 4543
2832void 4544void
2833ev_stat_start (EV_P_ ev_stat *w) 4545ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2834{ 4546{
2835 if (expect_false (ev_is_active (w))) 4547 if (expect_false (ev_is_active (w)))
2836 return; 4548 return;
2837 4549
2838 ev_stat_stat (EV_A_ w); 4550 ev_stat_stat (EV_A_ w);
… …
2848 4560
2849 if (fs_fd >= 0) 4561 if (fs_fd >= 0)
2850 infy_add (EV_A_ w); 4562 infy_add (EV_A_ w);
2851 else 4563 else
2852#endif 4564#endif
4565 {
2853 ev_timer_again (EV_A_ &w->timer); 4566 ev_timer_again (EV_A_ &w->timer);
4567 ev_unref (EV_A);
4568 }
2854 4569
2855 ev_start (EV_A_ (W)w, 1); 4570 ev_start (EV_A_ (W)w, 1);
2856 4571
2857 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
2858} 4573}
2859 4574
2860void 4575void
2861ev_stat_stop (EV_P_ ev_stat *w) 4576ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2862{ 4577{
2863 clear_pending (EV_A_ (W)w); 4578 clear_pending (EV_A_ (W)w);
2864 if (expect_false (!ev_is_active (w))) 4579 if (expect_false (!ev_is_active (w)))
2865 return; 4580 return;
2866 4581
2867 EV_FREQUENT_CHECK; 4582 EV_FREQUENT_CHECK;
2868 4583
2869#if EV_USE_INOTIFY 4584#if EV_USE_INOTIFY
2870 infy_del (EV_A_ w); 4585 infy_del (EV_A_ w);
2871#endif 4586#endif
4587
4588 if (ev_is_active (&w->timer))
4589 {
4590 ev_ref (EV_A);
2872 ev_timer_stop (EV_A_ &w->timer); 4591 ev_timer_stop (EV_A_ &w->timer);
4592 }
2873 4593
2874 ev_stop (EV_A_ (W)w); 4594 ev_stop (EV_A_ (W)w);
2875 4595
2876 EV_FREQUENT_CHECK; 4596 EV_FREQUENT_CHECK;
2877} 4597}
2878#endif 4598#endif
2879 4599
2880#if EV_IDLE_ENABLE 4600#if EV_IDLE_ENABLE
2881void 4601void
2882ev_idle_start (EV_P_ ev_idle *w) 4602ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2883{ 4603{
2884 if (expect_false (ev_is_active (w))) 4604 if (expect_false (ev_is_active (w)))
2885 return; 4605 return;
2886 4606
2887 pri_adjust (EV_A_ (W)w); 4607 pri_adjust (EV_A_ (W)w);
… …
2900 4620
2901 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
2902} 4622}
2903 4623
2904void 4624void
2905ev_idle_stop (EV_P_ ev_idle *w) 4625ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2906{ 4626{
2907 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
2908 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
2909 return; 4629 return;
2910 4630
… …
2922 4642
2923 EV_FREQUENT_CHECK; 4643 EV_FREQUENT_CHECK;
2924} 4644}
2925#endif 4645#endif
2926 4646
4647#if EV_PREPARE_ENABLE
2927void 4648void
2928ev_prepare_start (EV_P_ ev_prepare *w) 4649ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2929{ 4650{
2930 if (expect_false (ev_is_active (w))) 4651 if (expect_false (ev_is_active (w)))
2931 return; 4652 return;
2932 4653
2933 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
… …
2938 4659
2939 EV_FREQUENT_CHECK; 4660 EV_FREQUENT_CHECK;
2940} 4661}
2941 4662
2942void 4663void
2943ev_prepare_stop (EV_P_ ev_prepare *w) 4664ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2944{ 4665{
2945 clear_pending (EV_A_ (W)w); 4666 clear_pending (EV_A_ (W)w);
2946 if (expect_false (!ev_is_active (w))) 4667 if (expect_false (!ev_is_active (w)))
2947 return; 4668 return;
2948 4669
… …
2957 4678
2958 ev_stop (EV_A_ (W)w); 4679 ev_stop (EV_A_ (W)w);
2959 4680
2960 EV_FREQUENT_CHECK; 4681 EV_FREQUENT_CHECK;
2961} 4682}
4683#endif
2962 4684
4685#if EV_CHECK_ENABLE
2963void 4686void
2964ev_check_start (EV_P_ ev_check *w) 4687ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2965{ 4688{
2966 if (expect_false (ev_is_active (w))) 4689 if (expect_false (ev_is_active (w)))
2967 return; 4690 return;
2968 4691
2969 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
… …
2974 4697
2975 EV_FREQUENT_CHECK; 4698 EV_FREQUENT_CHECK;
2976} 4699}
2977 4700
2978void 4701void
2979ev_check_stop (EV_P_ ev_check *w) 4702ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2980{ 4703{
2981 clear_pending (EV_A_ (W)w); 4704 clear_pending (EV_A_ (W)w);
2982 if (expect_false (!ev_is_active (w))) 4705 if (expect_false (!ev_is_active (w)))
2983 return; 4706 return;
2984 4707
… …
2993 4716
2994 ev_stop (EV_A_ (W)w); 4717 ev_stop (EV_A_ (W)w);
2995 4718
2996 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
2997} 4720}
4721#endif
2998 4722
2999#if EV_EMBED_ENABLE 4723#if EV_EMBED_ENABLE
3000void noinline 4724noinline
4725void
3001ev_embed_sweep (EV_P_ ev_embed *w) 4726ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3002{ 4727{
3003 ev_loop (w->other, EVLOOP_NONBLOCK); 4728 ev_run (w->other, EVRUN_NOWAIT);
3004} 4729}
3005 4730
3006static void 4731static void
3007embed_io_cb (EV_P_ ev_io *io, int revents) 4732embed_io_cb (EV_P_ ev_io *io, int revents)
3008{ 4733{
3009 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4734 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3010 4735
3011 if (ev_cb (w)) 4736 if (ev_cb (w))
3012 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4737 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3013 else 4738 else
3014 ev_loop (w->other, EVLOOP_NONBLOCK); 4739 ev_run (w->other, EVRUN_NOWAIT);
3015} 4740}
3016 4741
3017static void 4742static void
3018embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4743embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3019{ 4744{
3020 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4745 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3021 4746
3022 { 4747 {
3023 struct ev_loop *loop = w->other; 4748 EV_P = w->other;
3024 4749
3025 while (fdchangecnt) 4750 while (fdchangecnt)
3026 { 4751 {
3027 fd_reify (EV_A); 4752 fd_reify (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4753 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 4754 }
3030 } 4755 }
3031} 4756}
3032 4757
3033static void 4758static void
… …
3036 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));
3037 4762
3038 ev_embed_stop (EV_A_ w); 4763 ev_embed_stop (EV_A_ w);
3039 4764
3040 { 4765 {
3041 struct ev_loop *loop = w->other; 4766 EV_P = w->other;
3042 4767
3043 ev_loop_fork (EV_A); 4768 ev_loop_fork (EV_A);
3044 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4769 ev_run (EV_A_ EVRUN_NOWAIT);
3045 } 4770 }
3046 4771
3047 ev_embed_start (EV_A_ w); 4772 ev_embed_start (EV_A_ w);
3048} 4773}
3049 4774
… …
3054 ev_idle_stop (EV_A_ idle); 4779 ev_idle_stop (EV_A_ idle);
3055} 4780}
3056#endif 4781#endif
3057 4782
3058void 4783void
3059ev_embed_start (EV_P_ ev_embed *w) 4784ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3060{ 4785{
3061 if (expect_false (ev_is_active (w))) 4786 if (expect_false (ev_is_active (w)))
3062 return; 4787 return;
3063 4788
3064 { 4789 {
3065 struct ev_loop *loop = w->other; 4790 EV_P = w->other;
3066 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 ()));
3067 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);
3068 } 4793 }
3069 4794
3070 EV_FREQUENT_CHECK; 4795 EV_FREQUENT_CHECK;
… …
3085 4810
3086 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
3087} 4812}
3088 4813
3089void 4814void
3090ev_embed_stop (EV_P_ ev_embed *w) 4815ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3091{ 4816{
3092 clear_pending (EV_A_ (W)w); 4817 clear_pending (EV_A_ (W)w);
3093 if (expect_false (!ev_is_active (w))) 4818 if (expect_false (!ev_is_active (w)))
3094 return; 4819 return;
3095 4820
… …
3097 4822
3098 ev_io_stop (EV_A_ &w->io); 4823 ev_io_stop (EV_A_ &w->io);
3099 ev_prepare_stop (EV_A_ &w->prepare); 4824 ev_prepare_stop (EV_A_ &w->prepare);
3100 ev_fork_stop (EV_A_ &w->fork); 4825 ev_fork_stop (EV_A_ &w->fork);
3101 4826
4827 ev_stop (EV_A_ (W)w);
4828
3102 EV_FREQUENT_CHECK; 4829 EV_FREQUENT_CHECK;
3103} 4830}
3104#endif 4831#endif
3105 4832
3106#if EV_FORK_ENABLE 4833#if EV_FORK_ENABLE
3107void 4834void
3108ev_fork_start (EV_P_ ev_fork *w) 4835ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3109{ 4836{
3110 if (expect_false (ev_is_active (w))) 4837 if (expect_false (ev_is_active (w)))
3111 return; 4838 return;
3112 4839
3113 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
… …
3118 4845
3119 EV_FREQUENT_CHECK; 4846 EV_FREQUENT_CHECK;
3120} 4847}
3121 4848
3122void 4849void
3123ev_fork_stop (EV_P_ ev_fork *w) 4850ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3124{ 4851{
3125 clear_pending (EV_A_ (W)w); 4852 clear_pending (EV_A_ (W)w);
3126 if (expect_false (!ev_is_active (w))) 4853 if (expect_false (!ev_is_active (w)))
3127 return; 4854 return;
3128 4855
… …
3139 4866
3140 EV_FREQUENT_CHECK; 4867 EV_FREQUENT_CHECK;
3141} 4868}
3142#endif 4869#endif
3143 4870
3144#if EV_ASYNC_ENABLE 4871#if EV_CLEANUP_ENABLE
3145void 4872void
3146ev_async_start (EV_P_ ev_async *w) 4873ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3147{ 4874{
3148 if (expect_false (ev_is_active (w))) 4875 if (expect_false (ev_is_active (w)))
3149 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_NOEXCEPT
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_NOEXCEPT
4915{
4916 if (expect_false (ev_is_active (w)))
4917 return;
4918
4919 w->sent = 0;
3150 4920
3151 evpipe_init (EV_A); 4921 evpipe_init (EV_A);
3152 4922
3153 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
3154 4924
… …
3158 4928
3159 EV_FREQUENT_CHECK; 4929 EV_FREQUENT_CHECK;
3160} 4930}
3161 4931
3162void 4932void
3163ev_async_stop (EV_P_ ev_async *w) 4933ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3164{ 4934{
3165 clear_pending (EV_A_ (W)w); 4935 clear_pending (EV_A_ (W)w);
3166 if (expect_false (!ev_is_active (w))) 4936 if (expect_false (!ev_is_active (w)))
3167 return; 4937 return;
3168 4938
… …
3179 4949
3180 EV_FREQUENT_CHECK; 4950 EV_FREQUENT_CHECK;
3181} 4951}
3182 4952
3183void 4953void
3184ev_async_send (EV_P_ ev_async *w) 4954ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3185{ 4955{
3186 w->sent = 1; 4956 w->sent = 1;
3187 evpipe_write (EV_A_ &gotasync); 4957 evpipe_write (EV_A_ &async_pending);
3188} 4958}
3189#endif 4959#endif
3190 4960
3191/*****************************************************************************/ 4961/*****************************************************************************/
3192 4962
… …
3226 4996
3227 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));
3228} 4998}
3229 4999
3230void 5000void
3231ev_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_NOEXCEPT
3232{ 5002{
3233 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));
3234 5004
3235 if (expect_false (!once)) 5005 if (expect_false (!once))
3236 { 5006 {
3237 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 5007 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3238 return; 5008 return;
3239 } 5009 }
3240 5010
3241 once->cb = cb; 5011 once->cb = cb;
3242 once->arg = arg; 5012 once->arg = arg;
… …
3257} 5027}
3258 5028
3259/*****************************************************************************/ 5029/*****************************************************************************/
3260 5030
3261#if EV_WALK_ENABLE 5031#if EV_WALK_ENABLE
5032ecb_cold
3262void 5033void
3263ev_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_NOEXCEPT
3264{ 5035{
3265 int i, j; 5036 int i, j;
3266 ev_watcher_list *wl, *wn; 5037 ev_watcher_list *wl, *wn;
3267 5038
3268 if (types & (EV_IO | EV_EMBED)) 5039 if (types & (EV_IO | EV_EMBED))
… …
3311 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5082 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3312#endif 5083#endif
3313 5084
3314#if EV_IDLE_ENABLE 5085#if EV_IDLE_ENABLE
3315 if (types & EV_IDLE) 5086 if (types & EV_IDLE)
3316 for (j = NUMPRI; i--; ) 5087 for (j = NUMPRI; j--; )
3317 for (i = idlecnt [j]; i--; ) 5088 for (i = idlecnt [j]; i--; )
3318 cb (EV_A_ EV_IDLE, idles [j][i]); 5089 cb (EV_A_ EV_IDLE, idles [j][i]);
3319#endif 5090#endif
3320 5091
3321#if EV_FORK_ENABLE 5092#if EV_FORK_ENABLE
… …
3329 if (types & EV_ASYNC) 5100 if (types & EV_ASYNC)
3330 for (i = asynccnt; i--; ) 5101 for (i = asynccnt; i--; )
3331 cb (EV_A_ EV_ASYNC, asyncs [i]); 5102 cb (EV_A_ EV_ASYNC, asyncs [i]);
3332#endif 5103#endif
3333 5104
5105#if EV_PREPARE_ENABLE
3334 if (types & EV_PREPARE) 5106 if (types & EV_PREPARE)
3335 for (i = preparecnt; i--; ) 5107 for (i = preparecnt; i--; )
3336#if EV_EMBED_ENABLE 5108# if EV_EMBED_ENABLE
3337 if (ev_cb (prepares [i]) != embed_prepare_cb) 5109 if (ev_cb (prepares [i]) != embed_prepare_cb)
3338#endif 5110# endif
3339 cb (EV_A_ EV_PREPARE, prepares [i]); 5111 cb (EV_A_ EV_PREPARE, prepares [i]);
5112#endif
3340 5113
5114#if EV_CHECK_ENABLE
3341 if (types & EV_CHECK) 5115 if (types & EV_CHECK)
3342 for (i = checkcnt; i--; ) 5116 for (i = checkcnt; i--; )
3343 cb (EV_A_ EV_CHECK, checks [i]); 5117 cb (EV_A_ EV_CHECK, checks [i]);
5118#endif
3344 5119
5120#if EV_SIGNAL_ENABLE
3345 if (types & EV_SIGNAL) 5121 if (types & EV_SIGNAL)
3346 for (i = 0; i < signalmax; ++i) 5122 for (i = 0; i < EV_NSIG - 1; ++i)
3347 for (wl = signals [i].head; wl; ) 5123 for (wl = signals [i].head; wl; )
3348 { 5124 {
3349 wn = wl->next; 5125 wn = wl->next;
3350 cb (EV_A_ EV_SIGNAL, wl); 5126 cb (EV_A_ EV_SIGNAL, wl);
3351 wl = wn; 5127 wl = wn;
3352 } 5128 }
5129#endif
3353 5130
5131#if EV_CHILD_ENABLE
3354 if (types & EV_CHILD) 5132 if (types & EV_CHILD)
3355 for (i = EV_PID_HASHSIZE; i--; ) 5133 for (i = (EV_PID_HASHSIZE); i--; )
3356 for (wl = childs [i]; wl; ) 5134 for (wl = childs [i]; wl; )
3357 { 5135 {
3358 wn = wl->next; 5136 wn = wl->next;
3359 cb (EV_A_ EV_CHILD, wl); 5137 cb (EV_A_ EV_CHILD, wl);
3360 wl = wn; 5138 wl = wn;
3361 } 5139 }
5140#endif
3362/* EV_STAT 0x00001000 /* stat data changed */ 5141/* EV_STAT 0x00001000 /* stat data changed */
3363/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5142/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3364} 5143}
3365#endif 5144#endif
3366 5145
3367#if EV_MULTIPLICITY 5146#if EV_MULTIPLICITY
3368 #include "ev_wrap.h" 5147 #include "ev_wrap.h"
3369#endif 5148#endif
3370 5149
3371#ifdef __cplusplus
3372}
3373#endif
3374

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