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Comparing libev/ev.c (file contents):
Revision 1.291 by root, Mon Jun 29 04:44:18 2009 UTC vs.
Revision 1.489 by root, Sat Dec 29 14:23:20 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) 2007-2018 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#define ECB_CPP14 (__cplusplus >= 201402L)
615#define ECB_CPP17 (__cplusplus >= 201703L)
616
617#if ECB_CPP
618 #define ECB_C 0
619 #define ECB_STDC_VERSION 0
620#else
621 #define ECB_C 1
622 #define ECB_STDC_VERSION __STDC_VERSION__
623#endif
624
625#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
626#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
627#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
628
629#if ECB_CPP
630 #define ECB_EXTERN_C extern "C"
631 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
632 #define ECB_EXTERN_C_END }
633#else
634 #define ECB_EXTERN_C extern
635 #define ECB_EXTERN_C_BEG
636 #define ECB_EXTERN_C_END
637#endif
638
639/*****************************************************************************/
640
641/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
642/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
643
644#if ECB_NO_THREADS
645 #define ECB_NO_SMP 1
646#endif
647
648#if ECB_NO_SMP
649 #define ECB_MEMORY_FENCE do { } while (0)
650#endif
651
652/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
653#if __xlC__ && ECB_CPP
654 #include <builtins.h>
655#endif
656
657#if 1400 <= _MSC_VER
658 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
659#endif
660
661#ifndef ECB_MEMORY_FENCE
662 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
663 #if __i386 || __i386__
664 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
665 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
666 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
667 #elif ECB_GCC_AMD64
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
669 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
670 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
671 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
673 #elif defined __ARM_ARCH_2__ \
674 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
675 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
676 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
677 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
678 || defined __ARM_ARCH_5TEJ__
679 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
680 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
681 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
682 || defined __ARM_ARCH_6T2__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
684 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
685 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
686 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
687 #elif __aarch64__
688 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
689 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
693 #elif defined __s390__ || defined __s390x__
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
695 #elif defined __mips__
696 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
697 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
698 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
699 #elif defined __alpha__
700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
701 #elif defined __hppa__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
703 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
704 #elif defined __ia64__
705 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
706 #elif defined __m68k__
707 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
708 #elif defined __m88k__
709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
710 #elif defined __sh__
711 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
712 #endif
713 #endif
714#endif
715
716#ifndef ECB_MEMORY_FENCE
717 #if ECB_GCC_VERSION(4,7)
718 /* see comment below (stdatomic.h) about the C11 memory model. */
719 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
720 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
721 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
722
723 #elif ECB_CLANG_EXTENSION(c_atomic)
724 /* see comment below (stdatomic.h) about the C11 memory model. */
725 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
726 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
727 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
728
729 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
730 #define ECB_MEMORY_FENCE __sync_synchronize ()
731 #elif _MSC_VER >= 1500 /* VC++ 2008 */
732 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
734 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
735 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
737 #elif _MSC_VER >= 1400 /* VC++ 2005 */
738 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
739 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
740 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
741 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
742 #elif defined _WIN32
743 #include <WinNT.h>
744 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
745 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
746 #include <mbarrier.h>
747 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
748 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
749 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
750 #elif __xlC__
751 #define ECB_MEMORY_FENCE __sync ()
752 #endif
753#endif
754
755#ifndef ECB_MEMORY_FENCE
756 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
757 /* we assume that these memory fences work on all variables/all memory accesses, */
758 /* not just C11 atomics and atomic accesses */
759 #include <stdatomic.h>
760 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
761 /* any fence other than seq_cst, which isn't very efficient for us. */
762 /* Why that is, we don't know - either the C11 memory model is quite useless */
763 /* for most usages, or gcc and clang have a bug */
764 /* I *currently* lean towards the latter, and inefficiently implement */
765 /* all three of ecb's fences as a seq_cst fence */
766 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
767 /* for all __atomic_thread_fence's except seq_cst */
768 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
769 #endif
770#endif
771
772#ifndef ECB_MEMORY_FENCE
773 #if !ECB_AVOID_PTHREADS
774 /*
775 * if you get undefined symbol references to pthread_mutex_lock,
776 * or failure to find pthread.h, then you should implement
777 * the ECB_MEMORY_FENCE operations for your cpu/compiler
778 * OR provide pthread.h and link against the posix thread library
779 * of your system.
780 */
781 #include <pthread.h>
782 #define ECB_NEEDS_PTHREADS 1
783 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
784
785 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
786 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
787 #endif
788#endif
789
790#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
791 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
792#endif
793
794#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
795 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
796#endif
797
798/*****************************************************************************/
799
800#if ECB_CPP
801 #define ecb_inline static inline
802#elif ECB_GCC_VERSION(2,5)
803 #define ecb_inline static __inline__
804#elif ECB_C99
805 #define ecb_inline static inline
806#else
807 #define ecb_inline static
808#endif
809
810#if ECB_GCC_VERSION(3,3)
811 #define ecb_restrict __restrict__
812#elif ECB_C99
813 #define ecb_restrict restrict
814#else
815 #define ecb_restrict
816#endif
817
818typedef int ecb_bool;
819
820#define ECB_CONCAT_(a, b) a ## b
821#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
822#define ECB_STRINGIFY_(a) # a
823#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
824#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
825
826#define ecb_function_ ecb_inline
827
828#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
829 #define ecb_attribute(attrlist) __attribute__ (attrlist)
830#else
831 #define ecb_attribute(attrlist)
832#endif
833
834#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
835 #define ecb_is_constant(expr) __builtin_constant_p (expr)
836#else
837 /* possible C11 impl for integral types
838 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
839 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
840
841 #define ecb_is_constant(expr) 0
842#endif
843
844#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
376# define expect(expr,value) __builtin_expect ((expr),(value)) 845 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
377# define noinline __attribute__ ((noinline))
378#else 846#else
379# define expect(expr,value) (expr) 847 #define ecb_expect(expr,value) (expr)
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif 848#endif
384#endif
385 849
850#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
851 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
852#else
853 #define ecb_prefetch(addr,rw,locality)
854#endif
855
856/* no emulation for ecb_decltype */
857#if ECB_CPP11
858 // older implementations might have problems with decltype(x)::type, work around it
859 template<class T> struct ecb_decltype_t { typedef T type; };
860 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
861#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
862 #define ecb_decltype(x) __typeof__ (x)
863#endif
864
865#if _MSC_VER >= 1300
866 #define ecb_deprecated __declspec (deprecated)
867#else
868 #define ecb_deprecated ecb_attribute ((__deprecated__))
869#endif
870
871#if _MSC_VER >= 1500
872 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
873#elif ECB_GCC_VERSION(4,5)
874 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
875#else
876 #define ecb_deprecated_message(msg) ecb_deprecated
877#endif
878
879#if _MSC_VER >= 1400
880 #define ecb_noinline __declspec (noinline)
881#else
882 #define ecb_noinline ecb_attribute ((__noinline__))
883#endif
884
885#define ecb_unused ecb_attribute ((__unused__))
886#define ecb_const ecb_attribute ((__const__))
887#define ecb_pure ecb_attribute ((__pure__))
888
889#if ECB_C11 || __IBMC_NORETURN
890 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
891 #define ecb_noreturn _Noreturn
892#elif ECB_CPP11
893 #define ecb_noreturn [[noreturn]]
894#elif _MSC_VER >= 1200
895 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
896 #define ecb_noreturn __declspec (noreturn)
897#else
898 #define ecb_noreturn ecb_attribute ((__noreturn__))
899#endif
900
901#if ECB_GCC_VERSION(4,3)
902 #define ecb_artificial ecb_attribute ((__artificial__))
903 #define ecb_hot ecb_attribute ((__hot__))
904 #define ecb_cold ecb_attribute ((__cold__))
905#else
906 #define ecb_artificial
907 #define ecb_hot
908 #define ecb_cold
909#endif
910
911/* put around conditional expressions if you are very sure that the */
912/* expression is mostly true or mostly false. note that these return */
913/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 914#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 915#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
916/* for compatibility to the rest of the world */
917#define ecb_likely(expr) ecb_expect_true (expr)
918#define ecb_unlikely(expr) ecb_expect_false (expr)
919
920/* count trailing zero bits and count # of one bits */
921#if ECB_GCC_VERSION(3,4) \
922 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
923 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
924 && ECB_CLANG_BUILTIN(__builtin_popcount))
925 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
926 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
927 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
928 #define ecb_ctz32(x) __builtin_ctz (x)
929 #define ecb_ctz64(x) __builtin_ctzll (x)
930 #define ecb_popcount32(x) __builtin_popcount (x)
931 /* no popcountll */
932#else
933 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
934 ecb_function_ ecb_const int
935 ecb_ctz32 (uint32_t x)
936 {
937#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
938 unsigned long r;
939 _BitScanForward (&r, x);
940 return (int)r;
941#else
942 int r = 0;
943
944 x &= ~x + 1; /* this isolates the lowest bit */
945
946#if ECB_branchless_on_i386
947 r += !!(x & 0xaaaaaaaa) << 0;
948 r += !!(x & 0xcccccccc) << 1;
949 r += !!(x & 0xf0f0f0f0) << 2;
950 r += !!(x & 0xff00ff00) << 3;
951 r += !!(x & 0xffff0000) << 4;
952#else
953 if (x & 0xaaaaaaaa) r += 1;
954 if (x & 0xcccccccc) r += 2;
955 if (x & 0xf0f0f0f0) r += 4;
956 if (x & 0xff00ff00) r += 8;
957 if (x & 0xffff0000) r += 16;
958#endif
959
960 return r;
961#endif
962 }
963
964 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
965 ecb_function_ ecb_const int
966 ecb_ctz64 (uint64_t x)
967 {
968#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
969 unsigned long r;
970 _BitScanForward64 (&r, x);
971 return (int)r;
972#else
973 int shift = x & 0xffffffff ? 0 : 32;
974 return ecb_ctz32 (x >> shift) + shift;
975#endif
976 }
977
978 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
979 ecb_function_ ecb_const int
980 ecb_popcount32 (uint32_t x)
981 {
982 x -= (x >> 1) & 0x55555555;
983 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
984 x = ((x >> 4) + x) & 0x0f0f0f0f;
985 x *= 0x01010101;
986
987 return x >> 24;
988 }
989
990 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
991 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
992 {
993#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
994 unsigned long r;
995 _BitScanReverse (&r, x);
996 return (int)r;
997#else
998 int r = 0;
999
1000 if (x >> 16) { x >>= 16; r += 16; }
1001 if (x >> 8) { x >>= 8; r += 8; }
1002 if (x >> 4) { x >>= 4; r += 4; }
1003 if (x >> 2) { x >>= 2; r += 2; }
1004 if (x >> 1) { r += 1; }
1005
1006 return r;
1007#endif
1008 }
1009
1010 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1011 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1012 {
1013#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1014 unsigned long r;
1015 _BitScanReverse64 (&r, x);
1016 return (int)r;
1017#else
1018 int r = 0;
1019
1020 if (x >> 32) { x >>= 32; r += 32; }
1021
1022 return r + ecb_ld32 (x);
1023#endif
1024 }
1025#endif
1026
1027ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1028ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1029ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1030ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1031
1032ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1033ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1034{
1035 return ( (x * 0x0802U & 0x22110U)
1036 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1037}
1038
1039ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1040ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1041{
1042 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1043 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1044 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1045 x = ( x >> 8 ) | ( x << 8);
1046
1047 return x;
1048}
1049
1050ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1051ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1052{
1053 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1054 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1055 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1056 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1057 x = ( x >> 16 ) | ( x << 16);
1058
1059 return x;
1060}
1061
1062/* popcount64 is only available on 64 bit cpus as gcc builtin */
1063/* so for this version we are lazy */
1064ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1065ecb_function_ ecb_const int
1066ecb_popcount64 (uint64_t x)
1067{
1068 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1069}
1070
1071ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1072ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1073ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1074ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1075ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1076ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1077ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1078ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1079
1080ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1081ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1082ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1083ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1084ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1085ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1086ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1087ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1088
1089#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1090 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1091 #define ecb_bswap16(x) __builtin_bswap16 (x)
1092 #else
1093 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1094 #endif
1095 #define ecb_bswap32(x) __builtin_bswap32 (x)
1096 #define ecb_bswap64(x) __builtin_bswap64 (x)
1097#elif _MSC_VER
1098 #include <stdlib.h>
1099 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1100 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1101 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1102#else
1103 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1104 ecb_function_ ecb_const uint16_t
1105 ecb_bswap16 (uint16_t x)
1106 {
1107 return ecb_rotl16 (x, 8);
1108 }
1109
1110 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1111 ecb_function_ ecb_const uint32_t
1112 ecb_bswap32 (uint32_t x)
1113 {
1114 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1115 }
1116
1117 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1118 ecb_function_ ecb_const uint64_t
1119 ecb_bswap64 (uint64_t x)
1120 {
1121 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1122 }
1123#endif
1124
1125#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1126 #define ecb_unreachable() __builtin_unreachable ()
1127#else
1128 /* this seems to work fine, but gcc always emits a warning for it :/ */
1129 ecb_inline ecb_noreturn void ecb_unreachable (void);
1130 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1131#endif
1132
1133/* try to tell the compiler that some condition is definitely true */
1134#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1135
1136ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1137ecb_inline ecb_const uint32_t
1138ecb_byteorder_helper (void)
1139{
1140 /* the union code still generates code under pressure in gcc, */
1141 /* but less than using pointers, and always seems to */
1142 /* successfully return a constant. */
1143 /* the reason why we have this horrible preprocessor mess */
1144 /* is to avoid it in all cases, at least on common architectures */
1145 /* or when using a recent enough gcc version (>= 4.6) */
1146#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1147 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1148 #define ECB_LITTLE_ENDIAN 1
1149 return 0x44332211;
1150#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1151 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1152 #define ECB_BIG_ENDIAN 1
1153 return 0x11223344;
1154#else
1155 union
1156 {
1157 uint8_t c[4];
1158 uint32_t u;
1159 } u = { 0x11, 0x22, 0x33, 0x44 };
1160 return u.u;
1161#endif
1162}
1163
1164ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1165ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1166ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1167ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1168
1169#if ECB_GCC_VERSION(3,0) || ECB_C99
1170 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1171#else
1172 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1173#endif
1174
1175#if ECB_CPP
1176 template<typename T>
1177 static inline T ecb_div_rd (T val, T div)
1178 {
1179 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1180 }
1181 template<typename T>
1182 static inline T ecb_div_ru (T val, T div)
1183 {
1184 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1185 }
1186#else
1187 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1188 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1189#endif
1190
1191#if ecb_cplusplus_does_not_suck
1192 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1193 template<typename T, int N>
1194 static inline int ecb_array_length (const T (&arr)[N])
1195 {
1196 return N;
1197 }
1198#else
1199 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1200#endif
1201
1202ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1203ecb_function_ ecb_const uint32_t
1204ecb_binary16_to_binary32 (uint32_t x)
1205{
1206 unsigned int s = (x & 0x8000) << (31 - 15);
1207 int e = (x >> 10) & 0x001f;
1208 unsigned int m = x & 0x03ff;
1209
1210 if (ecb_expect_false (e == 31))
1211 /* infinity or NaN */
1212 e = 255 - (127 - 15);
1213 else if (ecb_expect_false (!e))
1214 {
1215 if (ecb_expect_true (!m))
1216 /* zero, handled by code below by forcing e to 0 */
1217 e = 0 - (127 - 15);
1218 else
1219 {
1220 /* subnormal, renormalise */
1221 unsigned int s = 10 - ecb_ld32 (m);
1222
1223 m = (m << s) & 0x3ff; /* mask implicit bit */
1224 e -= s - 1;
1225 }
1226 }
1227
1228 /* e and m now are normalised, or zero, (or inf or nan) */
1229 e += 127 - 15;
1230
1231 return s | (e << 23) | (m << (23 - 10));
1232}
1233
1234ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1235ecb_function_ ecb_const uint16_t
1236ecb_binary32_to_binary16 (uint32_t x)
1237{
1238 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1239 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1240 unsigned int m = x & 0x007fffff;
1241
1242 x &= 0x7fffffff;
1243
1244 /* if it's within range of binary16 normals, use fast path */
1245 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1246 {
1247 /* mantissa round-to-even */
1248 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1249
1250 /* handle overflow */
1251 if (ecb_expect_false (m >= 0x00800000))
1252 {
1253 m >>= 1;
1254 e += 1;
1255 }
1256
1257 return s | (e << 10) | (m >> (23 - 10));
1258 }
1259
1260 /* handle large numbers and infinity */
1261 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1262 return s | 0x7c00;
1263
1264 /* handle zero, subnormals and small numbers */
1265 if (ecb_expect_true (x < 0x38800000))
1266 {
1267 /* zero */
1268 if (ecb_expect_true (!x))
1269 return s;
1270
1271 /* handle subnormals */
1272
1273 /* too small, will be zero */
1274 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1275 return s;
1276
1277 m |= 0x00800000; /* make implicit bit explicit */
1278
1279 /* very tricky - we need to round to the nearest e (+10) bit value */
1280 {
1281 unsigned int bits = 14 - e;
1282 unsigned int half = (1 << (bits - 1)) - 1;
1283 unsigned int even = (m >> bits) & 1;
1284
1285 /* if this overflows, we will end up with a normalised number */
1286 m = (m + half + even) >> bits;
1287 }
1288
1289 return s | m;
1290 }
1291
1292 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1293 m >>= 13;
1294
1295 return s | 0x7c00 | m | !m;
1296}
1297
1298/*******************************************************************************/
1299/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1300
1301/* basically, everything uses "ieee pure-endian" floating point numbers */
1302/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1303#if 0 \
1304 || __i386 || __i386__ \
1305 || ECB_GCC_AMD64 \
1306 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1307 || defined __s390__ || defined __s390x__ \
1308 || defined __mips__ \
1309 || defined __alpha__ \
1310 || defined __hppa__ \
1311 || defined __ia64__ \
1312 || defined __m68k__ \
1313 || defined __m88k__ \
1314 || defined __sh__ \
1315 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1316 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1317 || defined __aarch64__
1318 #define ECB_STDFP 1
1319 #include <string.h> /* for memcpy */
1320#else
1321 #define ECB_STDFP 0
1322#endif
1323
1324#ifndef ECB_NO_LIBM
1325
1326 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1327
1328 /* only the oldest of old doesn't have this one. solaris. */
1329 #ifdef INFINITY
1330 #define ECB_INFINITY INFINITY
1331 #else
1332 #define ECB_INFINITY HUGE_VAL
1333 #endif
1334
1335 #ifdef NAN
1336 #define ECB_NAN NAN
1337 #else
1338 #define ECB_NAN ECB_INFINITY
1339 #endif
1340
1341 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1342 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1343 #define ecb_frexpf(x,e) frexpf ((x), (e))
1344 #else
1345 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1346 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1347 #endif
1348
1349 /* convert a float to ieee single/binary32 */
1350 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1351 ecb_function_ ecb_const uint32_t
1352 ecb_float_to_binary32 (float x)
1353 {
1354 uint32_t r;
1355
1356 #if ECB_STDFP
1357 memcpy (&r, &x, 4);
1358 #else
1359 /* slow emulation, works for anything but -0 */
1360 uint32_t m;
1361 int e;
1362
1363 if (x == 0e0f ) return 0x00000000U;
1364 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1365 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1366 if (x != x ) return 0x7fbfffffU;
1367
1368 m = ecb_frexpf (x, &e) * 0x1000000U;
1369
1370 r = m & 0x80000000U;
1371
1372 if (r)
1373 m = -m;
1374
1375 if (e <= -126)
1376 {
1377 m &= 0xffffffU;
1378 m >>= (-125 - e);
1379 e = -126;
1380 }
1381
1382 r |= (e + 126) << 23;
1383 r |= m & 0x7fffffU;
1384 #endif
1385
1386 return r;
1387 }
1388
1389 /* converts an ieee single/binary32 to a float */
1390 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1391 ecb_function_ ecb_const float
1392 ecb_binary32_to_float (uint32_t x)
1393 {
1394 float r;
1395
1396 #if ECB_STDFP
1397 memcpy (&r, &x, 4);
1398 #else
1399 /* emulation, only works for normals and subnormals and +0 */
1400 int neg = x >> 31;
1401 int e = (x >> 23) & 0xffU;
1402
1403 x &= 0x7fffffU;
1404
1405 if (e)
1406 x |= 0x800000U;
1407 else
1408 e = 1;
1409
1410 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1411 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1412
1413 r = neg ? -r : r;
1414 #endif
1415
1416 return r;
1417 }
1418
1419 /* convert a double to ieee double/binary64 */
1420 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1421 ecb_function_ ecb_const uint64_t
1422 ecb_double_to_binary64 (double x)
1423 {
1424 uint64_t r;
1425
1426 #if ECB_STDFP
1427 memcpy (&r, &x, 8);
1428 #else
1429 /* slow emulation, works for anything but -0 */
1430 uint64_t m;
1431 int e;
1432
1433 if (x == 0e0 ) return 0x0000000000000000U;
1434 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1435 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1436 if (x != x ) return 0X7ff7ffffffffffffU;
1437
1438 m = frexp (x, &e) * 0x20000000000000U;
1439
1440 r = m & 0x8000000000000000;;
1441
1442 if (r)
1443 m = -m;
1444
1445 if (e <= -1022)
1446 {
1447 m &= 0x1fffffffffffffU;
1448 m >>= (-1021 - e);
1449 e = -1022;
1450 }
1451
1452 r |= ((uint64_t)(e + 1022)) << 52;
1453 r |= m & 0xfffffffffffffU;
1454 #endif
1455
1456 return r;
1457 }
1458
1459 /* converts an ieee double/binary64 to a double */
1460 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1461 ecb_function_ ecb_const double
1462 ecb_binary64_to_double (uint64_t x)
1463 {
1464 double r;
1465
1466 #if ECB_STDFP
1467 memcpy (&r, &x, 8);
1468 #else
1469 /* emulation, only works for normals and subnormals and +0 */
1470 int neg = x >> 63;
1471 int e = (x >> 52) & 0x7ffU;
1472
1473 x &= 0xfffffffffffffU;
1474
1475 if (e)
1476 x |= 0x10000000000000U;
1477 else
1478 e = 1;
1479
1480 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1481 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1482
1483 r = neg ? -r : r;
1484 #endif
1485
1486 return r;
1487 }
1488
1489 /* convert a float to ieee half/binary16 */
1490 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1491 ecb_function_ ecb_const uint16_t
1492 ecb_float_to_binary16 (float x)
1493 {
1494 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1495 }
1496
1497 /* convert an ieee half/binary16 to float */
1498 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1499 ecb_function_ ecb_const float
1500 ecb_binary16_to_float (uint16_t x)
1501 {
1502 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1503 }
1504
1505#endif
1506
1507#endif
1508
1509/* ECB.H END */
1510
1511#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1512/* if your architecture doesn't need memory fences, e.g. because it is
1513 * single-cpu/core, or if you use libev in a project that doesn't use libev
1514 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1515 * libev, in which cases the memory fences become nops.
1516 * alternatively, you can remove this #error and link against libpthread,
1517 * which will then provide the memory fences.
1518 */
1519# error "memory fences not defined for your architecture, please report"
1520#endif
1521
1522#ifndef ECB_MEMORY_FENCE
1523# define ECB_MEMORY_FENCE do { } while (0)
1524# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1525# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1526#endif
1527
1528#define expect_false(cond) ecb_expect_false (cond)
1529#define expect_true(cond) ecb_expect_true (cond)
1530#define noinline ecb_noinline
1531
388#define inline_size static inline 1532#define inline_size ecb_inline
389 1533
390#if EV_MINIMAL 1534#if EV_FEATURE_CODE
391# define inline_speed static noinline
392#else
393# define inline_speed static inline 1535# define inline_speed ecb_inline
1536#else
1537# define inline_speed noinline static
394#endif 1538#endif
395 1539
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1540#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1541
1542#if EV_MINPRI == EV_MAXPRI
1543# define ABSPRI(w) (((W)w), 0)
1544#else
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1545# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1546#endif
398 1547
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1548#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 1549#define EMPTY2(a,b) /* used to suppress some warnings */
401 1550
402typedef ev_watcher *W; 1551typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 1555#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1556#define ev_at(w) ((WT)(w))->at
408 1557
409#if EV_USE_REALTIME 1558#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1559/* 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 */ 1560/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1561static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1562#endif
414 1563
415#if EV_USE_MONOTONIC 1564#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1565static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1566#endif
418 1567
1568#ifndef EV_FD_TO_WIN32_HANDLE
1569# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1570#endif
1571#ifndef EV_WIN32_HANDLE_TO_FD
1572# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1573#endif
1574#ifndef EV_WIN32_CLOSE_FD
1575# define EV_WIN32_CLOSE_FD(fd) close (fd)
1576#endif
1577
419#ifdef _WIN32 1578#ifdef _WIN32
420# include "ev_win32.c" 1579# include "ev_win32.c"
421#endif 1580#endif
422 1581
423/*****************************************************************************/ 1582/*****************************************************************************/
424 1583
1584/* define a suitable floor function (only used by periodics atm) */
1585
1586#if EV_USE_FLOOR
1587# include <math.h>
1588# define ev_floor(v) floor (v)
1589#else
1590
1591#include <float.h>
1592
1593/* a floor() replacement function, should be independent of ev_tstamp type */
1594noinline
1595static ev_tstamp
1596ev_floor (ev_tstamp v)
1597{
1598 /* the choice of shift factor is not terribly important */
1599#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1600 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1601#else
1602 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1603#endif
1604
1605 /* argument too large for an unsigned long? */
1606 if (expect_false (v >= shift))
1607 {
1608 ev_tstamp f;
1609
1610 if (v == v - 1.)
1611 return v; /* very large number */
1612
1613 f = shift * ev_floor (v * (1. / shift));
1614 return f + ev_floor (v - f);
1615 }
1616
1617 /* special treatment for negative args? */
1618 if (expect_false (v < 0.))
1619 {
1620 ev_tstamp f = -ev_floor (-v);
1621
1622 return f - (f == v ? 0 : 1);
1623 }
1624
1625 /* fits into an unsigned long */
1626 return (unsigned long)v;
1627}
1628
1629#endif
1630
1631/*****************************************************************************/
1632
1633#ifdef __linux
1634# include <sys/utsname.h>
1635#endif
1636
1637noinline ecb_cold
1638static unsigned int
1639ev_linux_version (void)
1640{
1641#ifdef __linux
1642 unsigned int v = 0;
1643 struct utsname buf;
1644 int i;
1645 char *p = buf.release;
1646
1647 if (uname (&buf))
1648 return 0;
1649
1650 for (i = 3+1; --i; )
1651 {
1652 unsigned int c = 0;
1653
1654 for (;;)
1655 {
1656 if (*p >= '0' && *p <= '9')
1657 c = c * 10 + *p++ - '0';
1658 else
1659 {
1660 p += *p == '.';
1661 break;
1662 }
1663 }
1664
1665 v = (v << 8) | c;
1666 }
1667
1668 return v;
1669#else
1670 return 0;
1671#endif
1672}
1673
1674/*****************************************************************************/
1675
1676#if EV_AVOID_STDIO
1677noinline ecb_cold
1678static void
1679ev_printerr (const char *msg)
1680{
1681 write (STDERR_FILENO, msg, strlen (msg));
1682}
1683#endif
1684
425static void (*syserr_cb)(const char *msg); 1685static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
426 1686
1687ecb_cold
427void 1688void
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1689ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
429{ 1690{
430 syserr_cb = cb; 1691 syserr_cb = cb;
431} 1692}
432 1693
433static void noinline 1694noinline ecb_cold
1695static void
434ev_syserr (const char *msg) 1696ev_syserr (const char *msg)
435{ 1697{
436 if (!msg) 1698 if (!msg)
437 msg = "(libev) system error"; 1699 msg = "(libev) system error";
438 1700
439 if (syserr_cb) 1701 if (syserr_cb)
440 syserr_cb (msg); 1702 syserr_cb (msg);
441 else 1703 else
442 { 1704 {
1705#if EV_AVOID_STDIO
1706 ev_printerr (msg);
1707 ev_printerr (": ");
1708 ev_printerr (strerror (errno));
1709 ev_printerr ("\n");
1710#else
443 perror (msg); 1711 perror (msg);
1712#endif
444 abort (); 1713 abort ();
445 } 1714 }
446} 1715}
447 1716
448static void * 1717static void *
449ev_realloc_emul (void *ptr, long size) 1718ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
450{ 1719{
451 /* some systems, notably openbsd and darwin, fail to properly 1720 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 1721 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 1722 * the single unix specification, so work around them here.
1723 * recently, also (at least) fedora and debian started breaking it,
1724 * despite documenting it otherwise.
454 */ 1725 */
455 1726
456 if (size) 1727 if (size)
457 return realloc (ptr, size); 1728 return realloc (ptr, size);
458 1729
459 free (ptr); 1730 free (ptr);
460 return 0; 1731 return 0;
461} 1732}
462 1733
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1734static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
464 1735
1736ecb_cold
465void 1737void
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1738ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
467{ 1739{
468 alloc = cb; 1740 alloc = cb;
469} 1741}
470 1742
471inline_speed void * 1743inline_speed void *
… …
473{ 1745{
474 ptr = alloc (ptr, size); 1746 ptr = alloc (ptr, size);
475 1747
476 if (!ptr && size) 1748 if (!ptr && size)
477 { 1749 {
1750#if EV_AVOID_STDIO
1751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1752#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1754#endif
479 abort (); 1755 abort ();
480 } 1756 }
481 1757
482 return ptr; 1758 return ptr;
483} 1759}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1761#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1762#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1763
488/*****************************************************************************/ 1764/*****************************************************************************/
489 1765
1766/* set in reify when reification needed */
1767#define EV_ANFD_REIFY 1
1768
490/* file descriptor info structure */ 1769/* file descriptor info structure */
491typedef struct 1770typedef struct
492{ 1771{
493 WL head; 1772 WL head;
494 unsigned char events; /* the events watched for */ 1773 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1774 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 */ 1775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 1776 unsigned char unused;
498#if EV_USE_EPOLL 1777#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1778 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1779#endif
501#if EV_SELECT_IS_WINSOCKET 1780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1781 SOCKET handle;
1782#endif
1783#if EV_USE_IOCP
1784 OVERLAPPED or, ow;
503#endif 1785#endif
504} ANFD; 1786} ANFD;
505 1787
506/* stores the pending event set for a given watcher */ 1788/* stores the pending event set for a given watcher */
507typedef struct 1789typedef struct
… …
549 #undef VAR 1831 #undef VAR
550 }; 1832 };
551 #include "ev_wrap.h" 1833 #include "ev_wrap.h"
552 1834
553 static struct ev_loop default_loop_struct; 1835 static struct ev_loop default_loop_struct;
554 struct ev_loop *ev_default_loop_ptr; 1836 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
555 1837
556#else 1838#else
557 1839
558 ev_tstamp ev_rt_now; 1840 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; 1841 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1842 #include "ev_vars.h"
561 #undef VAR 1843 #undef VAR
562 1844
563 static int ev_default_loop_ptr; 1845 static int ev_default_loop_ptr;
564 1846
565#endif 1847#endif
566 1848
1849#if EV_FEATURE_API
1850# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1851# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1852# define EV_INVOKE_PENDING invoke_cb (EV_A)
1853#else
1854# define EV_RELEASE_CB (void)0
1855# define EV_ACQUIRE_CB (void)0
1856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1857#endif
1858
1859#define EVBREAK_RECURSE 0x80
1860
567/*****************************************************************************/ 1861/*****************************************************************************/
568 1862
1863#ifndef EV_HAVE_EV_TIME
569ev_tstamp 1864ev_tstamp
570ev_time (void) 1865ev_time (void) EV_NOEXCEPT
571{ 1866{
572#if EV_USE_REALTIME 1867#if EV_USE_REALTIME
573 if (expect_true (have_realtime)) 1868 if (expect_true (have_realtime))
574 { 1869 {
575 struct timespec ts; 1870 struct timespec ts;
… …
580 1875
581 struct timeval tv; 1876 struct timeval tv;
582 gettimeofday (&tv, 0); 1877 gettimeofday (&tv, 0);
583 return tv.tv_sec + tv.tv_usec * 1e-6; 1878 return tv.tv_sec + tv.tv_usec * 1e-6;
584} 1879}
1880#endif
585 1881
586inline_size ev_tstamp 1882inline_size ev_tstamp
587get_clock (void) 1883get_clock (void)
588{ 1884{
589#if EV_USE_MONOTONIC 1885#if EV_USE_MONOTONIC
… …
598 return ev_time (); 1894 return ev_time ();
599} 1895}
600 1896
601#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
602ev_tstamp 1898ev_tstamp
603ev_now (EV_P) 1899ev_now (EV_P) EV_NOEXCEPT
604{ 1900{
605 return ev_rt_now; 1901 return ev_rt_now;
606} 1902}
607#endif 1903#endif
608 1904
609void 1905void
610ev_sleep (ev_tstamp delay) 1906ev_sleep (ev_tstamp delay) EV_NOEXCEPT
611{ 1907{
612 if (delay > 0.) 1908 if (delay > 0.)
613 { 1909 {
614#if EV_USE_NANOSLEEP 1910#if EV_USE_NANOSLEEP
615 struct timespec ts; 1911 struct timespec ts;
616 1912
617 ts.tv_sec = (time_t)delay; 1913 EV_TS_SET (ts, delay);
618 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
619
620 nanosleep (&ts, 0); 1914 nanosleep (&ts, 0);
621#elif defined(_WIN32) 1915#elif defined _WIN32
1916 /* maybe this should round up, as ms is very low resolution */
1917 /* compared to select (µs) or nanosleep (ns) */
622 Sleep ((unsigned long)(delay * 1e3)); 1918 Sleep ((unsigned long)(delay * 1e3));
623#else 1919#else
624 struct timeval tv; 1920 struct timeval tv;
625 1921
626 tv.tv_sec = (time_t)delay;
627 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
628
629 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1922 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
630 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1923 /* something not guaranteed by newer posix versions, but guaranteed */
631 /* by older ones */ 1924 /* by older ones */
1925 EV_TV_SET (tv, delay);
632 select (0, 0, 0, 0, &tv); 1926 select (0, 0, 0, 0, &tv);
633#endif 1927#endif
634 } 1928 }
635} 1929}
636 1930
637/*****************************************************************************/ 1931/*****************************************************************************/
638 1932
639#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1933#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
640 1934
641/* find a suitable new size for the given array, */ 1935/* find a suitable new size for the given array, */
642/* hopefully by rounding to a ncie-to-malloc size */ 1936/* hopefully by rounding to a nice-to-malloc size */
643inline_size int 1937inline_size int
644array_nextsize (int elem, int cur, int cnt) 1938array_nextsize (int elem, int cur, int cnt)
645{ 1939{
646 int ncur = cur + 1; 1940 int ncur = cur + 1;
647 1941
648 do 1942 do
649 ncur <<= 1; 1943 ncur <<= 1;
650 while (cnt > ncur); 1944 while (cnt > ncur);
651 1945
652 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1946 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
653 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1947 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
654 { 1948 {
655 ncur *= elem; 1949 ncur *= elem;
656 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1950 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
657 ncur = ncur - sizeof (void *) * 4; 1951 ncur = ncur - sizeof (void *) * 4;
… …
659 } 1953 }
660 1954
661 return ncur; 1955 return ncur;
662} 1956}
663 1957
664static noinline void * 1958noinline ecb_cold
1959static void *
665array_realloc (int elem, void *base, int *cur, int cnt) 1960array_realloc (int elem, void *base, int *cur, int cnt)
666{ 1961{
667 *cur = array_nextsize (elem, *cur, cnt); 1962 *cur = array_nextsize (elem, *cur, cnt);
668 return ev_realloc (base, elem * *cur); 1963 return ev_realloc (base, elem * *cur);
669} 1964}
… …
672 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1967 memset ((void *)(base), 0, sizeof (*(base)) * (count))
673 1968
674#define array_needsize(type,base,cur,cnt,init) \ 1969#define array_needsize(type,base,cur,cnt,init) \
675 if (expect_false ((cnt) > (cur))) \ 1970 if (expect_false ((cnt) > (cur))) \
676 { \ 1971 { \
677 int ocur_ = (cur); \ 1972 ecb_unused int ocur_ = (cur); \
678 (base) = (type *)array_realloc \ 1973 (base) = (type *)array_realloc \
679 (sizeof (type), (base), &(cur), (cnt)); \ 1974 (sizeof (type), (base), &(cur), (cnt)); \
680 init ((base) + (ocur_), (cur) - ocur_); \ 1975 init ((base) + (ocur_), (cur) - ocur_); \
681 } 1976 }
682 1977
… …
694 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1989 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
695 1990
696/*****************************************************************************/ 1991/*****************************************************************************/
697 1992
698/* dummy callback for pending events */ 1993/* dummy callback for pending events */
699static void noinline 1994noinline
1995static void
700pendingcb (EV_P_ ev_prepare *w, int revents) 1996pendingcb (EV_P_ ev_prepare *w, int revents)
701{ 1997{
702} 1998}
703 1999
704void noinline 2000noinline
2001void
705ev_feed_event (EV_P_ void *w, int revents) 2002ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
706{ 2003{
707 W w_ = (W)w; 2004 W w_ = (W)w;
708 int pri = ABSPRI (w_); 2005 int pri = ABSPRI (w_);
709 2006
710 if (expect_false (w_->pending)) 2007 if (expect_false (w_->pending))
… …
714 w_->pending = ++pendingcnt [pri]; 2011 w_->pending = ++pendingcnt [pri];
715 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2012 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
716 pendings [pri][w_->pending - 1].w = w_; 2013 pendings [pri][w_->pending - 1].w = w_;
717 pendings [pri][w_->pending - 1].events = revents; 2014 pendings [pri][w_->pending - 1].events = revents;
718 } 2015 }
2016
2017 pendingpri = NUMPRI - 1;
719} 2018}
720 2019
721inline_speed void 2020inline_speed void
722feed_reverse (EV_P_ W w) 2021feed_reverse (EV_P_ W w)
723{ 2022{
… …
743} 2042}
744 2043
745/*****************************************************************************/ 2044/*****************************************************************************/
746 2045
747inline_speed void 2046inline_speed void
748fd_event (EV_P_ int fd, int revents) 2047fd_event_nocheck (EV_P_ int fd, int revents)
749{ 2048{
750 ANFD *anfd = anfds + fd; 2049 ANFD *anfd = anfds + fd;
751 ev_io *w; 2050 ev_io *w;
752 2051
753 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2052 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
757 if (ev) 2056 if (ev)
758 ev_feed_event (EV_A_ (W)w, ev); 2057 ev_feed_event (EV_A_ (W)w, ev);
759 } 2058 }
760} 2059}
761 2060
762void 2061/* do not submit kernel events for fds that have reify set */
2062/* because that means they changed while we were polling for new events */
2063inline_speed void
763ev_feed_fd_event (EV_P_ int fd, int revents) 2064fd_event (EV_P_ int fd, int revents)
2065{
2066 ANFD *anfd = anfds + fd;
2067
2068 if (expect_true (!anfd->reify))
2069 fd_event_nocheck (EV_A_ fd, revents);
2070}
2071
2072void
2073ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
764{ 2074{
765 if (fd >= 0 && fd < anfdmax) 2075 if (fd >= 0 && fd < anfdmax)
766 fd_event (EV_A_ fd, revents); 2076 fd_event_nocheck (EV_A_ fd, revents);
767} 2077}
768 2078
769/* make sure the external fd watch events are in-sync */ 2079/* make sure the external fd watch events are in-sync */
770/* with the kernel/libev internal state */ 2080/* with the kernel/libev internal state */
771inline_size void 2081inline_size void
772fd_reify (EV_P) 2082fd_reify (EV_P)
773{ 2083{
774 int i; 2084 int i;
775 2085
2086#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2087 for (i = 0; i < fdchangecnt; ++i)
2088 {
2089 int fd = fdchanges [i];
2090 ANFD *anfd = anfds + fd;
2091
2092 if (anfd->reify & EV__IOFDSET && anfd->head)
2093 {
2094 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2095
2096 if (handle != anfd->handle)
2097 {
2098 unsigned long arg;
2099
2100 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2101
2102 /* handle changed, but fd didn't - we need to do it in two steps */
2103 backend_modify (EV_A_ fd, anfd->events, 0);
2104 anfd->events = 0;
2105 anfd->handle = handle;
2106 }
2107 }
2108 }
2109#endif
2110
776 for (i = 0; i < fdchangecnt; ++i) 2111 for (i = 0; i < fdchangecnt; ++i)
777 { 2112 {
778 int fd = fdchanges [i]; 2113 int fd = fdchanges [i];
779 ANFD *anfd = anfds + fd; 2114 ANFD *anfd = anfds + fd;
780 ev_io *w; 2115 ev_io *w;
781 2116
782 unsigned char events = 0; 2117 unsigned char o_events = anfd->events;
2118 unsigned char o_reify = anfd->reify;
783 2119
784 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2120 anfd->reify = 0;
785 events |= (unsigned char)w->events;
786 2121
787#if EV_SELECT_IS_WINSOCKET 2122 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
788 if (events)
789 { 2123 {
790 unsigned long arg; 2124 anfd->events = 0;
791 #ifdef EV_FD_TO_WIN32_HANDLE 2125
792 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2126 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
793 #else 2127 anfd->events |= (unsigned char)w->events;
794 anfd->handle = _get_osfhandle (fd); 2128
795 #endif 2129 if (o_events != anfd->events)
796 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2130 o_reify = EV__IOFDSET; /* actually |= */
797 } 2131 }
798#endif
799 2132
800 { 2133 if (o_reify & EV__IOFDSET)
801 unsigned char o_events = anfd->events;
802 unsigned char o_reify = anfd->reify;
803
804 anfd->reify = 0;
805 anfd->events = events;
806
807 if (o_events != events || o_reify & EV__IOFDSET)
808 backend_modify (EV_A_ fd, o_events, events); 2134 backend_modify (EV_A_ fd, o_events, anfd->events);
809 }
810 } 2135 }
811 2136
812 fdchangecnt = 0; 2137 fdchangecnt = 0;
813} 2138}
814 2139
815/* something about the given fd changed */ 2140/* something about the given fd changed */
816inline_size void 2141inline_size
2142void
817fd_change (EV_P_ int fd, int flags) 2143fd_change (EV_P_ int fd, int flags)
818{ 2144{
819 unsigned char reify = anfds [fd].reify; 2145 unsigned char reify = anfds [fd].reify;
820 anfds [fd].reify |= flags; 2146 anfds [fd].reify |= flags;
821 2147
… …
826 fdchanges [fdchangecnt - 1] = fd; 2152 fdchanges [fdchangecnt - 1] = fd;
827 } 2153 }
828} 2154}
829 2155
830/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2156/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
831inline_speed void 2157inline_speed ecb_cold void
832fd_kill (EV_P_ int fd) 2158fd_kill (EV_P_ int fd)
833{ 2159{
834 ev_io *w; 2160 ev_io *w;
835 2161
836 while ((w = (ev_io *)anfds [fd].head)) 2162 while ((w = (ev_io *)anfds [fd].head))
… …
838 ev_io_stop (EV_A_ w); 2164 ev_io_stop (EV_A_ w);
839 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2165 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
840 } 2166 }
841} 2167}
842 2168
843/* check whether the given fd is atcually valid, for error recovery */ 2169/* check whether the given fd is actually valid, for error recovery */
844inline_size int 2170inline_size ecb_cold int
845fd_valid (int fd) 2171fd_valid (int fd)
846{ 2172{
847#ifdef _WIN32 2173#ifdef _WIN32
848 return _get_osfhandle (fd) != -1; 2174 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
849#else 2175#else
850 return fcntl (fd, F_GETFD) != -1; 2176 return fcntl (fd, F_GETFD) != -1;
851#endif 2177#endif
852} 2178}
853 2179
854/* called on EBADF to verify fds */ 2180/* called on EBADF to verify fds */
855static void noinline 2181noinline ecb_cold
2182static void
856fd_ebadf (EV_P) 2183fd_ebadf (EV_P)
857{ 2184{
858 int fd; 2185 int fd;
859 2186
860 for (fd = 0; fd < anfdmax; ++fd) 2187 for (fd = 0; fd < anfdmax; ++fd)
… …
862 if (!fd_valid (fd) && errno == EBADF) 2189 if (!fd_valid (fd) && errno == EBADF)
863 fd_kill (EV_A_ fd); 2190 fd_kill (EV_A_ fd);
864} 2191}
865 2192
866/* called on ENOMEM in select/poll to kill some fds and retry */ 2193/* called on ENOMEM in select/poll to kill some fds and retry */
867static void noinline 2194noinline ecb_cold
2195static void
868fd_enomem (EV_P) 2196fd_enomem (EV_P)
869{ 2197{
870 int fd; 2198 int fd;
871 2199
872 for (fd = anfdmax; fd--; ) 2200 for (fd = anfdmax; fd--; )
873 if (anfds [fd].events) 2201 if (anfds [fd].events)
874 { 2202 {
875 fd_kill (EV_A_ fd); 2203 fd_kill (EV_A_ fd);
876 return; 2204 break;
877 } 2205 }
878} 2206}
879 2207
880/* usually called after fork if backend needs to re-arm all fds from scratch */ 2208/* usually called after fork if backend needs to re-arm all fds from scratch */
881static void noinline 2209noinline
2210static void
882fd_rearm_all (EV_P) 2211fd_rearm_all (EV_P)
883{ 2212{
884 int fd; 2213 int fd;
885 2214
886 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
887 if (anfds [fd].events) 2216 if (anfds [fd].events)
888 { 2217 {
889 anfds [fd].events = 0; 2218 anfds [fd].events = 0;
890 anfds [fd].emask = 0; 2219 anfds [fd].emask = 0;
891 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2220 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
892 } 2221 }
893} 2222}
894 2223
2224/* used to prepare libev internal fd's */
2225/* this is not fork-safe */
2226inline_speed void
2227fd_intern (int fd)
2228{
2229#ifdef _WIN32
2230 unsigned long arg = 1;
2231 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2232#else
2233 fcntl (fd, F_SETFD, FD_CLOEXEC);
2234 fcntl (fd, F_SETFL, O_NONBLOCK);
2235#endif
2236}
2237
895/*****************************************************************************/ 2238/*****************************************************************************/
896 2239
897/* 2240/*
898 * the heap functions want a real array index. array index 0 uis guaranteed to not 2241 * the heap functions want a real array index. array index 0 is guaranteed to not
899 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2242 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
900 * the branching factor of the d-tree. 2243 * the branching factor of the d-tree.
901 */ 2244 */
902 2245
903/* 2246/*
… …
971 2314
972 for (;;) 2315 for (;;)
973 { 2316 {
974 int c = k << 1; 2317 int c = k << 1;
975 2318
976 if (c > N + HEAP0 - 1) 2319 if (c >= N + HEAP0)
977 break; 2320 break;
978 2321
979 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2322 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
980 ? 1 : 0; 2323 ? 1 : 0;
981 2324
… …
1017 2360
1018/* move an element suitably so it is in a correct place */ 2361/* move an element suitably so it is in a correct place */
1019inline_size void 2362inline_size void
1020adjustheap (ANHE *heap, int N, int k) 2363adjustheap (ANHE *heap, int N, int k)
1021{ 2364{
1022 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2365 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1023 upheap (heap, k); 2366 upheap (heap, k);
1024 else 2367 else
1025 downheap (heap, N, k); 2368 downheap (heap, N, k);
1026} 2369}
1027 2370
… …
1040/*****************************************************************************/ 2383/*****************************************************************************/
1041 2384
1042/* associate signal watchers to a signal signal */ 2385/* associate signal watchers to a signal signal */
1043typedef struct 2386typedef struct
1044{ 2387{
2388 EV_ATOMIC_T pending;
2389#if EV_MULTIPLICITY
2390 EV_P;
2391#endif
1045 WL head; 2392 WL head;
1046 EV_ATOMIC_T gotsig;
1047} ANSIG; 2393} ANSIG;
1048 2394
1049static ANSIG *signals; 2395static ANSIG signals [EV_NSIG - 1];
1050static int signalmax;
1051
1052static EV_ATOMIC_T gotsig;
1053 2396
1054/*****************************************************************************/ 2397/*****************************************************************************/
1055 2398
1056/* used to prepare libev internal fd's */ 2399#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1057/* this is not fork-safe */ 2400
2401noinline ecb_cold
2402static void
2403evpipe_init (EV_P)
2404{
2405 if (!ev_is_active (&pipe_w))
2406 {
2407 int fds [2];
2408
2409# if EV_USE_EVENTFD
2410 fds [0] = -1;
2411 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2412 if (fds [1] < 0 && errno == EINVAL)
2413 fds [1] = eventfd (0, 0);
2414
2415 if (fds [1] < 0)
2416# endif
2417 {
2418 while (pipe (fds))
2419 ev_syserr ("(libev) error creating signal/async pipe");
2420
2421 fd_intern (fds [0]);
2422 }
2423
2424 evpipe [0] = fds [0];
2425
2426 if (evpipe [1] < 0)
2427 evpipe [1] = fds [1]; /* first call, set write fd */
2428 else
2429 {
2430 /* on subsequent calls, do not change evpipe [1] */
2431 /* so that evpipe_write can always rely on its value. */
2432 /* this branch does not do anything sensible on windows, */
2433 /* so must not be executed on windows */
2434
2435 dup2 (fds [1], evpipe [1]);
2436 close (fds [1]);
2437 }
2438
2439 fd_intern (evpipe [1]);
2440
2441 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2442 ev_io_start (EV_A_ &pipe_w);
2443 ev_unref (EV_A); /* watcher should not keep loop alive */
2444 }
2445}
2446
1058inline_speed void 2447inline_speed void
1059fd_intern (int fd) 2448evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1060{ 2449{
1061#ifdef _WIN32 2450 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1062 unsigned long arg = 1;
1063 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1064#else
1065 fcntl (fd, F_SETFD, FD_CLOEXEC);
1066 fcntl (fd, F_SETFL, O_NONBLOCK);
1067#endif
1068}
1069 2451
1070static void noinline 2452 if (expect_true (*flag))
1071evpipe_init (EV_P) 2453 return;
1072{ 2454
1073 if (!ev_is_active (&pipe_w)) 2455 *flag = 1;
2456 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2457
2458 pipe_write_skipped = 1;
2459
2460 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2461
2462 if (pipe_write_wanted)
1074 { 2463 {
2464 int old_errno;
2465
2466 pipe_write_skipped = 0;
2467 ECB_MEMORY_FENCE_RELEASE;
2468
2469 old_errno = errno; /* save errno because write will clobber it */
2470
1075#if EV_USE_EVENTFD 2471#if EV_USE_EVENTFD
1076 if ((evfd = eventfd (0, 0)) >= 0) 2472 if (evpipe [0] < 0)
1077 { 2473 {
1078 evpipe [0] = -1; 2474 uint64_t counter = 1;
1079 fd_intern (evfd); 2475 write (evpipe [1], &counter, sizeof (uint64_t));
1080 ev_io_set (&pipe_w, evfd, EV_READ);
1081 } 2476 }
1082 else 2477 else
1083#endif 2478#endif
1084 { 2479 {
1085 while (pipe (evpipe)) 2480#ifdef _WIN32
1086 ev_syserr ("(libev) error creating signal/async pipe"); 2481 WSABUF buf;
1087 2482 DWORD sent;
1088 fd_intern (evpipe [0]); 2483 buf.buf = (char *)&buf;
1089 fd_intern (evpipe [1]); 2484 buf.len = 1;
1090 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2485 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2486#else
2487 write (evpipe [1], &(evpipe [1]), 1);
2488#endif
1091 } 2489 }
1092
1093 ev_io_start (EV_A_ &pipe_w);
1094 ev_unref (EV_A); /* watcher should not keep loop alive */
1095 }
1096}
1097
1098inline_size void
1099evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1100{
1101 if (!*flag)
1102 {
1103 int old_errno = errno; /* save errno because write might clobber it */
1104
1105 *flag = 1;
1106
1107#if EV_USE_EVENTFD
1108 if (evfd >= 0)
1109 {
1110 uint64_t counter = 1;
1111 write (evfd, &counter, sizeof (uint64_t));
1112 }
1113 else
1114#endif
1115 write (evpipe [1], &old_errno, 1);
1116 2490
1117 errno = old_errno; 2491 errno = old_errno;
1118 } 2492 }
1119} 2493}
1120 2494
1121/* called whenever the libev signal pipe */ 2495/* called whenever the libev signal pipe */
1122/* got some events (signal, async) */ 2496/* got some events (signal, async) */
1123static void 2497static void
1124pipecb (EV_P_ ev_io *iow, int revents) 2498pipecb (EV_P_ ev_io *iow, int revents)
1125{ 2499{
2500 int i;
2501
2502 if (revents & EV_READ)
2503 {
1126#if EV_USE_EVENTFD 2504#if EV_USE_EVENTFD
1127 if (evfd >= 0) 2505 if (evpipe [0] < 0)
1128 { 2506 {
1129 uint64_t counter; 2507 uint64_t counter;
1130 read (evfd, &counter, sizeof (uint64_t)); 2508 read (evpipe [1], &counter, sizeof (uint64_t));
1131 } 2509 }
1132 else 2510 else
1133#endif 2511#endif
1134 { 2512 {
1135 char dummy; 2513 char dummy[4];
2514#ifdef _WIN32
2515 WSABUF buf;
2516 DWORD recvd;
2517 DWORD flags = 0;
2518 buf.buf = dummy;
2519 buf.len = sizeof (dummy);
2520 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2521#else
1136 read (evpipe [0], &dummy, 1); 2522 read (evpipe [0], &dummy, sizeof (dummy));
2523#endif
2524 }
2525 }
2526
2527 pipe_write_skipped = 0;
2528
2529 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2530
2531#if EV_SIGNAL_ENABLE
2532 if (sig_pending)
1137 } 2533 {
2534 sig_pending = 0;
1138 2535
1139 if (gotsig && ev_is_default_loop (EV_A)) 2536 ECB_MEMORY_FENCE;
1140 {
1141 int signum;
1142 gotsig = 0;
1143 2537
1144 for (signum = signalmax; signum--; ) 2538 for (i = EV_NSIG - 1; i--; )
1145 if (signals [signum].gotsig) 2539 if (expect_false (signals [i].pending))
1146 ev_feed_signal_event (EV_A_ signum + 1); 2540 ev_feed_signal_event (EV_A_ i + 1);
1147 } 2541 }
2542#endif
1148 2543
1149#if EV_ASYNC_ENABLE 2544#if EV_ASYNC_ENABLE
1150 if (gotasync) 2545 if (async_pending)
1151 { 2546 {
1152 int i; 2547 async_pending = 0;
1153 gotasync = 0; 2548
2549 ECB_MEMORY_FENCE;
1154 2550
1155 for (i = asynccnt; i--; ) 2551 for (i = asynccnt; i--; )
1156 if (asyncs [i]->sent) 2552 if (asyncs [i]->sent)
1157 { 2553 {
1158 asyncs [i]->sent = 0; 2554 asyncs [i]->sent = 0;
2555 ECB_MEMORY_FENCE_RELEASE;
1159 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2556 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1160 } 2557 }
1161 } 2558 }
1162#endif 2559#endif
1163} 2560}
1164 2561
1165/*****************************************************************************/ 2562/*****************************************************************************/
1166 2563
2564void
2565ev_feed_signal (int signum) EV_NOEXCEPT
2566{
2567#if EV_MULTIPLICITY
2568 EV_P;
2569 ECB_MEMORY_FENCE_ACQUIRE;
2570 EV_A = signals [signum - 1].loop;
2571
2572 if (!EV_A)
2573 return;
2574#endif
2575
2576 signals [signum - 1].pending = 1;
2577 evpipe_write (EV_A_ &sig_pending);
2578}
2579
1167static void 2580static void
1168ev_sighandler (int signum) 2581ev_sighandler (int signum)
1169{ 2582{
2583#ifdef _WIN32
2584 signal (signum, ev_sighandler);
2585#endif
2586
2587 ev_feed_signal (signum);
2588}
2589
2590noinline
2591void
2592ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2593{
2594 WL w;
2595
2596 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2597 return;
2598
2599 --signum;
2600
1170#if EV_MULTIPLICITY 2601#if EV_MULTIPLICITY
1171 struct ev_loop *loop = &default_loop_struct; 2602 /* it is permissible to try to feed a signal to the wrong loop */
1172#endif 2603 /* or, likely more useful, feeding a signal nobody is waiting for */
1173 2604
1174#if _WIN32 2605 if (expect_false (signals [signum].loop != EV_A))
1175 signal (signum, ev_sighandler);
1176#endif
1177
1178 signals [signum - 1].gotsig = 1;
1179 evpipe_write (EV_A_ &gotsig);
1180}
1181
1182void noinline
1183ev_feed_signal_event (EV_P_ int signum)
1184{
1185 WL w;
1186
1187#if EV_MULTIPLICITY
1188 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1189#endif
1190
1191 --signum;
1192
1193 if (signum < 0 || signum >= signalmax)
1194 return; 2606 return;
2607#endif
1195 2608
1196 signals [signum].gotsig = 0; 2609 signals [signum].pending = 0;
2610 ECB_MEMORY_FENCE_RELEASE;
1197 2611
1198 for (w = signals [signum].head; w; w = w->next) 2612 for (w = signals [signum].head; w; w = w->next)
1199 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2613 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1200} 2614}
1201 2615
2616#if EV_USE_SIGNALFD
2617static void
2618sigfdcb (EV_P_ ev_io *iow, int revents)
2619{
2620 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2621
2622 for (;;)
2623 {
2624 ssize_t res = read (sigfd, si, sizeof (si));
2625
2626 /* not ISO-C, as res might be -1, but works with SuS */
2627 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2628 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2629
2630 if (res < (ssize_t)sizeof (si))
2631 break;
2632 }
2633}
2634#endif
2635
2636#endif
2637
1202/*****************************************************************************/ 2638/*****************************************************************************/
1203 2639
2640#if EV_CHILD_ENABLE
1204static WL childs [EV_PID_HASHSIZE]; 2641static WL childs [EV_PID_HASHSIZE];
1205
1206#ifndef _WIN32
1207 2642
1208static ev_signal childev; 2643static ev_signal childev;
1209 2644
1210#ifndef WIFCONTINUED 2645#ifndef WIFCONTINUED
1211# define WIFCONTINUED(status) 0 2646# define WIFCONTINUED(status) 0
… …
1216child_reap (EV_P_ int chain, int pid, int status) 2651child_reap (EV_P_ int chain, int pid, int status)
1217{ 2652{
1218 ev_child *w; 2653 ev_child *w;
1219 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2654 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1220 2655
1221 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2656 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1222 { 2657 {
1223 if ((w->pid == pid || !w->pid) 2658 if ((w->pid == pid || !w->pid)
1224 && (!traced || (w->flags & 1))) 2659 && (!traced || (w->flags & 1)))
1225 { 2660 {
1226 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2661 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1251 /* make sure we are called again until all children have been reaped */ 2686 /* make sure we are called again until all children have been reaped */
1252 /* we need to do it this way so that the callback gets called before we continue */ 2687 /* we need to do it this way so that the callback gets called before we continue */
1253 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2688 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1254 2689
1255 child_reap (EV_A_ pid, pid, status); 2690 child_reap (EV_A_ pid, pid, status);
1256 if (EV_PID_HASHSIZE > 1) 2691 if ((EV_PID_HASHSIZE) > 1)
1257 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2692 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1258} 2693}
1259 2694
1260#endif 2695#endif
1261 2696
1262/*****************************************************************************/ 2697/*****************************************************************************/
1263 2698
2699#if EV_USE_IOCP
2700# include "ev_iocp.c"
2701#endif
1264#if EV_USE_PORT 2702#if EV_USE_PORT
1265# include "ev_port.c" 2703# include "ev_port.c"
1266#endif 2704#endif
1267#if EV_USE_KQUEUE 2705#if EV_USE_KQUEUE
1268# include "ev_kqueue.c" 2706# include "ev_kqueue.c"
… …
1275#endif 2713#endif
1276#if EV_USE_SELECT 2714#if EV_USE_SELECT
1277# include "ev_select.c" 2715# include "ev_select.c"
1278#endif 2716#endif
1279 2717
1280int 2718ecb_cold int
1281ev_version_major (void) 2719ev_version_major (void) EV_NOEXCEPT
1282{ 2720{
1283 return EV_VERSION_MAJOR; 2721 return EV_VERSION_MAJOR;
1284} 2722}
1285 2723
1286int 2724ecb_cold int
1287ev_version_minor (void) 2725ev_version_minor (void) EV_NOEXCEPT
1288{ 2726{
1289 return EV_VERSION_MINOR; 2727 return EV_VERSION_MINOR;
1290} 2728}
1291 2729
1292/* return true if we are running with elevated privileges and should ignore env variables */ 2730/* return true if we are running with elevated privileges and should ignore env variables */
1293int inline_size 2731inline_size ecb_cold int
1294enable_secure (void) 2732enable_secure (void)
1295{ 2733{
1296#ifdef _WIN32 2734#ifdef _WIN32
1297 return 0; 2735 return 0;
1298#else 2736#else
1299 return getuid () != geteuid () 2737 return getuid () != geteuid ()
1300 || getgid () != getegid (); 2738 || getgid () != getegid ();
1301#endif 2739#endif
1302} 2740}
1303 2741
2742ecb_cold
1304unsigned int 2743unsigned int
1305ev_supported_backends (void) 2744ev_supported_backends (void) EV_NOEXCEPT
1306{ 2745{
1307 unsigned int flags = 0; 2746 unsigned int flags = 0;
1308 2747
1309 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2748 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1310 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2749 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1313 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2752 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1314 2753
1315 return flags; 2754 return flags;
1316} 2755}
1317 2756
2757ecb_cold
1318unsigned int 2758unsigned int
1319ev_recommended_backends (void) 2759ev_recommended_backends (void) EV_NOEXCEPT
1320{ 2760{
1321 unsigned int flags = ev_supported_backends (); 2761 unsigned int flags = ev_supported_backends ();
1322 2762
1323#ifndef __NetBSD__ 2763#ifndef __NetBSD__
1324 /* kqueue is borked on everything but netbsd apparently */ 2764 /* kqueue is borked on everything but netbsd apparently */
… …
1328#ifdef __APPLE__ 2768#ifdef __APPLE__
1329 /* only select works correctly on that "unix-certified" platform */ 2769 /* only select works correctly on that "unix-certified" platform */
1330 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2770 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1331 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2771 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1332#endif 2772#endif
2773#ifdef __FreeBSD__
2774 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2775#endif
1333 2776
1334 return flags; 2777 return flags;
1335} 2778}
1336 2779
2780ecb_cold
1337unsigned int 2781unsigned int
1338ev_embeddable_backends (void) 2782ev_embeddable_backends (void) EV_NOEXCEPT
1339{ 2783{
1340 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2784 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1341 2785
1342 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2786 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1343 /* please fix it and tell me how to detect the fix */ 2787 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1344 flags &= ~EVBACKEND_EPOLL; 2788 flags &= ~EVBACKEND_EPOLL;
1345 2789
1346 return flags; 2790 return flags;
1347} 2791}
1348 2792
1349unsigned int 2793unsigned int
1350ev_backend (EV_P) 2794ev_backend (EV_P) EV_NOEXCEPT
1351{ 2795{
1352 return backend; 2796 return backend;
1353} 2797}
1354 2798
2799#if EV_FEATURE_API
1355unsigned int 2800unsigned int
1356ev_loop_count (EV_P) 2801ev_iteration (EV_P) EV_NOEXCEPT
1357{ 2802{
1358 return loop_count; 2803 return loop_count;
1359} 2804}
1360 2805
2806unsigned int
2807ev_depth (EV_P) EV_NOEXCEPT
2808{
2809 return loop_depth;
2810}
2811
1361void 2812void
1362ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2813ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1363{ 2814{
1364 io_blocktime = interval; 2815 io_blocktime = interval;
1365} 2816}
1366 2817
1367void 2818void
1368ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2819ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1369{ 2820{
1370 timeout_blocktime = interval; 2821 timeout_blocktime = interval;
1371} 2822}
1372 2823
2824void
2825ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2826{
2827 userdata = data;
2828}
2829
2830void *
2831ev_userdata (EV_P) EV_NOEXCEPT
2832{
2833 return userdata;
2834}
2835
2836void
2837ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2838{
2839 invoke_cb = invoke_pending_cb;
2840}
2841
2842void
2843ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2844{
2845 release_cb = release;
2846 acquire_cb = acquire;
2847}
2848#endif
2849
1373/* initialise a loop structure, must be zero-initialised */ 2850/* initialise a loop structure, must be zero-initialised */
1374static void noinline 2851noinline ecb_cold
2852static void
1375loop_init (EV_P_ unsigned int flags) 2853loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1376{ 2854{
1377 if (!backend) 2855 if (!backend)
1378 { 2856 {
2857 origflags = flags;
2858
1379#if EV_USE_REALTIME 2859#if EV_USE_REALTIME
1380 if (!have_realtime) 2860 if (!have_realtime)
1381 { 2861 {
1382 struct timespec ts; 2862 struct timespec ts;
1383 2863
… …
1394 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2874 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1395 have_monotonic = 1; 2875 have_monotonic = 1;
1396 } 2876 }
1397#endif 2877#endif
1398 2878
1399 ev_rt_now = ev_time ();
1400 mn_now = get_clock ();
1401 now_floor = mn_now;
1402 rtmn_diff = ev_rt_now - mn_now;
1403
1404 io_blocktime = 0.;
1405 timeout_blocktime = 0.;
1406 backend = 0;
1407 backend_fd = -1;
1408 gotasync = 0;
1409#if EV_USE_INOTIFY
1410 fs_fd = -2;
1411#endif
1412
1413 /* pid check not overridable via env */ 2879 /* pid check not overridable via env */
1414#ifndef _WIN32 2880#ifndef _WIN32
1415 if (flags & EVFLAG_FORKCHECK) 2881 if (flags & EVFLAG_FORKCHECK)
1416 curpid = getpid (); 2882 curpid = getpid ();
1417#endif 2883#endif
… …
1419 if (!(flags & EVFLAG_NOENV) 2885 if (!(flags & EVFLAG_NOENV)
1420 && !enable_secure () 2886 && !enable_secure ()
1421 && getenv ("LIBEV_FLAGS")) 2887 && getenv ("LIBEV_FLAGS"))
1422 flags = atoi (getenv ("LIBEV_FLAGS")); 2888 flags = atoi (getenv ("LIBEV_FLAGS"));
1423 2889
1424 if (!(flags & 0x0000ffffU)) 2890 ev_rt_now = ev_time ();
2891 mn_now = get_clock ();
2892 now_floor = mn_now;
2893 rtmn_diff = ev_rt_now - mn_now;
2894#if EV_FEATURE_API
2895 invoke_cb = ev_invoke_pending;
2896#endif
2897
2898 io_blocktime = 0.;
2899 timeout_blocktime = 0.;
2900 backend = 0;
2901 backend_fd = -1;
2902 sig_pending = 0;
2903#if EV_ASYNC_ENABLE
2904 async_pending = 0;
2905#endif
2906 pipe_write_skipped = 0;
2907 pipe_write_wanted = 0;
2908 evpipe [0] = -1;
2909 evpipe [1] = -1;
2910#if EV_USE_INOTIFY
2911 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2912#endif
2913#if EV_USE_SIGNALFD
2914 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2915#endif
2916
2917 if (!(flags & EVBACKEND_MASK))
1425 flags |= ev_recommended_backends (); 2918 flags |= ev_recommended_backends ();
1426 2919
2920#if EV_USE_IOCP
2921 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2922#endif
1427#if EV_USE_PORT 2923#if EV_USE_PORT
1428 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2924 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1429#endif 2925#endif
1430#if EV_USE_KQUEUE 2926#if EV_USE_KQUEUE
1431 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2927 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1440 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2936 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1441#endif 2937#endif
1442 2938
1443 ev_prepare_init (&pending_w, pendingcb); 2939 ev_prepare_init (&pending_w, pendingcb);
1444 2940
2941#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1445 ev_init (&pipe_w, pipecb); 2942 ev_init (&pipe_w, pipecb);
1446 ev_set_priority (&pipe_w, EV_MAXPRI); 2943 ev_set_priority (&pipe_w, EV_MAXPRI);
2944#endif
1447 } 2945 }
1448} 2946}
1449 2947
1450/* free up a loop structure */ 2948/* free up a loop structure */
1451static void noinline 2949ecb_cold
2950void
1452loop_destroy (EV_P) 2951ev_loop_destroy (EV_P)
1453{ 2952{
1454 int i; 2953 int i;
1455 2954
2955#if EV_MULTIPLICITY
2956 /* mimic free (0) */
2957 if (!EV_A)
2958 return;
2959#endif
2960
2961#if EV_CLEANUP_ENABLE
2962 /* queue cleanup watchers (and execute them) */
2963 if (expect_false (cleanupcnt))
2964 {
2965 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2966 EV_INVOKE_PENDING;
2967 }
2968#endif
2969
2970#if EV_CHILD_ENABLE
2971 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2972 {
2973 ev_ref (EV_A); /* child watcher */
2974 ev_signal_stop (EV_A_ &childev);
2975 }
2976#endif
2977
1456 if (ev_is_active (&pipe_w)) 2978 if (ev_is_active (&pipe_w))
1457 { 2979 {
1458 ev_ref (EV_A); /* signal watcher */ 2980 /*ev_ref (EV_A);*/
1459 ev_io_stop (EV_A_ &pipe_w); 2981 /*ev_io_stop (EV_A_ &pipe_w);*/
1460 2982
2983 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2984 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2985 }
2986
1461#if EV_USE_EVENTFD 2987#if EV_USE_SIGNALFD
1462 if (evfd >= 0) 2988 if (ev_is_active (&sigfd_w))
1463 close (evfd); 2989 close (sigfd);
1464#endif 2990#endif
1465
1466 if (evpipe [0] >= 0)
1467 {
1468 close (evpipe [0]);
1469 close (evpipe [1]);
1470 }
1471 }
1472 2991
1473#if EV_USE_INOTIFY 2992#if EV_USE_INOTIFY
1474 if (fs_fd >= 0) 2993 if (fs_fd >= 0)
1475 close (fs_fd); 2994 close (fs_fd);
1476#endif 2995#endif
1477 2996
1478 if (backend_fd >= 0) 2997 if (backend_fd >= 0)
1479 close (backend_fd); 2998 close (backend_fd);
1480 2999
3000#if EV_USE_IOCP
3001 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3002#endif
1481#if EV_USE_PORT 3003#if EV_USE_PORT
1482 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3004 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1483#endif 3005#endif
1484#if EV_USE_KQUEUE 3006#if EV_USE_KQUEUE
1485 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3007 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1500#if EV_IDLE_ENABLE 3022#if EV_IDLE_ENABLE
1501 array_free (idle, [i]); 3023 array_free (idle, [i]);
1502#endif 3024#endif
1503 } 3025 }
1504 3026
1505 ev_free (anfds); anfdmax = 0; 3027 ev_free (anfds); anfds = 0; anfdmax = 0;
1506 3028
1507 /* have to use the microsoft-never-gets-it-right macro */ 3029 /* have to use the microsoft-never-gets-it-right macro */
1508 array_free (rfeed, EMPTY); 3030 array_free (rfeed, EMPTY);
1509 array_free (fdchange, EMPTY); 3031 array_free (fdchange, EMPTY);
1510 array_free (timer, EMPTY); 3032 array_free (timer, EMPTY);
… …
1512 array_free (periodic, EMPTY); 3034 array_free (periodic, EMPTY);
1513#endif 3035#endif
1514#if EV_FORK_ENABLE 3036#if EV_FORK_ENABLE
1515 array_free (fork, EMPTY); 3037 array_free (fork, EMPTY);
1516#endif 3038#endif
3039#if EV_CLEANUP_ENABLE
3040 array_free (cleanup, EMPTY);
3041#endif
1517 array_free (prepare, EMPTY); 3042 array_free (prepare, EMPTY);
1518 array_free (check, EMPTY); 3043 array_free (check, EMPTY);
1519#if EV_ASYNC_ENABLE 3044#if EV_ASYNC_ENABLE
1520 array_free (async, EMPTY); 3045 array_free (async, EMPTY);
1521#endif 3046#endif
1522 3047
1523 backend = 0; 3048 backend = 0;
3049
3050#if EV_MULTIPLICITY
3051 if (ev_is_default_loop (EV_A))
3052#endif
3053 ev_default_loop_ptr = 0;
3054#if EV_MULTIPLICITY
3055 else
3056 ev_free (EV_A);
3057#endif
1524} 3058}
1525 3059
1526#if EV_USE_INOTIFY 3060#if EV_USE_INOTIFY
1527inline_size void infy_fork (EV_P); 3061inline_size void infy_fork (EV_P);
1528#endif 3062#endif
… …
1541#endif 3075#endif
1542#if EV_USE_INOTIFY 3076#if EV_USE_INOTIFY
1543 infy_fork (EV_A); 3077 infy_fork (EV_A);
1544#endif 3078#endif
1545 3079
3080#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1546 if (ev_is_active (&pipe_w)) 3081 if (ev_is_active (&pipe_w) && postfork != 2)
1547 { 3082 {
1548 /* this "locks" the handlers against writing to the pipe */ 3083 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1549 /* while we modify the fd vars */
1550 gotsig = 1;
1551#if EV_ASYNC_ENABLE
1552 gotasync = 1;
1553#endif
1554 3084
1555 ev_ref (EV_A); 3085 ev_ref (EV_A);
1556 ev_io_stop (EV_A_ &pipe_w); 3086 ev_io_stop (EV_A_ &pipe_w);
1557 3087
1558#if EV_USE_EVENTFD
1559 if (evfd >= 0)
1560 close (evfd);
1561#endif
1562
1563 if (evpipe [0] >= 0) 3088 if (evpipe [0] >= 0)
1564 { 3089 EV_WIN32_CLOSE_FD (evpipe [0]);
1565 close (evpipe [0]);
1566 close (evpipe [1]);
1567 }
1568 3090
1569 evpipe_init (EV_A); 3091 evpipe_init (EV_A);
1570 /* now iterate over everything, in case we missed something */ 3092 /* iterate over everything, in case we missed something before */
1571 pipecb (EV_A_ &pipe_w, EV_READ); 3093 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1572 } 3094 }
3095#endif
1573 3096
1574 postfork = 0; 3097 postfork = 0;
1575} 3098}
1576 3099
1577#if EV_MULTIPLICITY 3100#if EV_MULTIPLICITY
1578 3101
3102ecb_cold
1579struct ev_loop * 3103struct ev_loop *
1580ev_loop_new (unsigned int flags) 3104ev_loop_new (unsigned int flags) EV_NOEXCEPT
1581{ 3105{
1582 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3106 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1583 3107
1584 memset (loop, 0, sizeof (struct ev_loop)); 3108 memset (EV_A, 0, sizeof (struct ev_loop));
1585
1586 loop_init (EV_A_ flags); 3109 loop_init (EV_A_ flags);
1587 3110
1588 if (ev_backend (EV_A)) 3111 if (ev_backend (EV_A))
1589 return loop; 3112 return EV_A;
1590 3113
3114 ev_free (EV_A);
1591 return 0; 3115 return 0;
1592} 3116}
1593 3117
1594void 3118#endif /* multiplicity */
1595ev_loop_destroy (EV_P)
1596{
1597 loop_destroy (EV_A);
1598 ev_free (loop);
1599}
1600
1601void
1602ev_loop_fork (EV_P)
1603{
1604 postfork = 1; /* must be in line with ev_default_fork */
1605}
1606 3119
1607#if EV_VERIFY 3120#if EV_VERIFY
1608static void noinline 3121noinline ecb_cold
3122static void
1609verify_watcher (EV_P_ W w) 3123verify_watcher (EV_P_ W w)
1610{ 3124{
1611 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3125 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1612 3126
1613 if (w->pending) 3127 if (w->pending)
1614 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3128 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1615} 3129}
1616 3130
1617static void noinline 3131noinline ecb_cold
3132static void
1618verify_heap (EV_P_ ANHE *heap, int N) 3133verify_heap (EV_P_ ANHE *heap, int N)
1619{ 3134{
1620 int i; 3135 int i;
1621 3136
1622 for (i = HEAP0; i < N + HEAP0; ++i) 3137 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1627 3142
1628 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3143 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1629 } 3144 }
1630} 3145}
1631 3146
1632static void noinline 3147noinline ecb_cold
3148static void
1633array_verify (EV_P_ W *ws, int cnt) 3149array_verify (EV_P_ W *ws, int cnt)
1634{ 3150{
1635 while (cnt--) 3151 while (cnt--)
1636 { 3152 {
1637 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3153 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1638 verify_watcher (EV_A_ ws [cnt]); 3154 verify_watcher (EV_A_ ws [cnt]);
1639 } 3155 }
1640} 3156}
1641#endif 3157#endif
1642 3158
1643void 3159#if EV_FEATURE_API
1644ev_loop_verify (EV_P) 3160void ecb_cold
3161ev_verify (EV_P) EV_NOEXCEPT
1645{ 3162{
1646#if EV_VERIFY 3163#if EV_VERIFY
1647 int i; 3164 int i;
1648 WL w; 3165 WL w, w2;
1649 3166
1650 assert (activecnt >= -1); 3167 assert (activecnt >= -1);
1651 3168
1652 assert (fdchangemax >= fdchangecnt); 3169 assert (fdchangemax >= fdchangecnt);
1653 for (i = 0; i < fdchangecnt; ++i) 3170 for (i = 0; i < fdchangecnt; ++i)
1654 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3171 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1655 3172
1656 assert (anfdmax >= 0); 3173 assert (anfdmax >= 0);
1657 for (i = 0; i < anfdmax; ++i) 3174 for (i = 0; i < anfdmax; ++i)
3175 {
3176 int j = 0;
3177
1658 for (w = anfds [i].head; w; w = w->next) 3178 for (w = w2 = anfds [i].head; w; w = w->next)
1659 { 3179 {
1660 verify_watcher (EV_A_ (W)w); 3180 verify_watcher (EV_A_ (W)w);
3181
3182 if (j++ & 1)
3183 {
3184 assert (("libev: io watcher list contains a loop", w != w2));
3185 w2 = w2->next;
3186 }
3187
1661 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3188 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1662 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3189 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1663 } 3190 }
3191 }
1664 3192
1665 assert (timermax >= timercnt); 3193 assert (timermax >= timercnt);
1666 verify_heap (EV_A_ timers, timercnt); 3194 verify_heap (EV_A_ timers, timercnt);
1667 3195
1668#if EV_PERIODIC_ENABLE 3196#if EV_PERIODIC_ENABLE
… …
1683#if EV_FORK_ENABLE 3211#if EV_FORK_ENABLE
1684 assert (forkmax >= forkcnt); 3212 assert (forkmax >= forkcnt);
1685 array_verify (EV_A_ (W *)forks, forkcnt); 3213 array_verify (EV_A_ (W *)forks, forkcnt);
1686#endif 3214#endif
1687 3215
3216#if EV_CLEANUP_ENABLE
3217 assert (cleanupmax >= cleanupcnt);
3218 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3219#endif
3220
1688#if EV_ASYNC_ENABLE 3221#if EV_ASYNC_ENABLE
1689 assert (asyncmax >= asynccnt); 3222 assert (asyncmax >= asynccnt);
1690 array_verify (EV_A_ (W *)asyncs, asynccnt); 3223 array_verify (EV_A_ (W *)asyncs, asynccnt);
1691#endif 3224#endif
1692 3225
3226#if EV_PREPARE_ENABLE
1693 assert (preparemax >= preparecnt); 3227 assert (preparemax >= preparecnt);
1694 array_verify (EV_A_ (W *)prepares, preparecnt); 3228 array_verify (EV_A_ (W *)prepares, preparecnt);
3229#endif
1695 3230
3231#if EV_CHECK_ENABLE
1696 assert (checkmax >= checkcnt); 3232 assert (checkmax >= checkcnt);
1697 array_verify (EV_A_ (W *)checks, checkcnt); 3233 array_verify (EV_A_ (W *)checks, checkcnt);
3234#endif
1698 3235
1699# if 0 3236# if 0
3237#if EV_CHILD_ENABLE
1700 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3238 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1701 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3239 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3240#endif
1702# endif 3241# endif
1703#endif 3242#endif
1704} 3243}
1705 3244#endif
1706#endif /* multiplicity */
1707 3245
1708#if EV_MULTIPLICITY 3246#if EV_MULTIPLICITY
3247ecb_cold
1709struct ev_loop * 3248struct ev_loop *
1710ev_default_loop_init (unsigned int flags)
1711#else 3249#else
1712int 3250int
3251#endif
1713ev_default_loop (unsigned int flags) 3252ev_default_loop (unsigned int flags) EV_NOEXCEPT
1714#endif
1715{ 3253{
1716 if (!ev_default_loop_ptr) 3254 if (!ev_default_loop_ptr)
1717 { 3255 {
1718#if EV_MULTIPLICITY 3256#if EV_MULTIPLICITY
1719 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3257 EV_P = ev_default_loop_ptr = &default_loop_struct;
1720#else 3258#else
1721 ev_default_loop_ptr = 1; 3259 ev_default_loop_ptr = 1;
1722#endif 3260#endif
1723 3261
1724 loop_init (EV_A_ flags); 3262 loop_init (EV_A_ flags);
1725 3263
1726 if (ev_backend (EV_A)) 3264 if (ev_backend (EV_A))
1727 { 3265 {
1728#ifndef _WIN32 3266#if EV_CHILD_ENABLE
1729 ev_signal_init (&childev, childcb, SIGCHLD); 3267 ev_signal_init (&childev, childcb, SIGCHLD);
1730 ev_set_priority (&childev, EV_MAXPRI); 3268 ev_set_priority (&childev, EV_MAXPRI);
1731 ev_signal_start (EV_A_ &childev); 3269 ev_signal_start (EV_A_ &childev);
1732 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3270 ev_unref (EV_A); /* child watcher should not keep loop alive */
1733#endif 3271#endif
… …
1738 3276
1739 return ev_default_loop_ptr; 3277 return ev_default_loop_ptr;
1740} 3278}
1741 3279
1742void 3280void
1743ev_default_destroy (void) 3281ev_loop_fork (EV_P) EV_NOEXCEPT
1744{ 3282{
1745#if EV_MULTIPLICITY 3283 postfork = 1;
1746 struct ev_loop *loop = ev_default_loop_ptr;
1747#endif
1748
1749 ev_default_loop_ptr = 0;
1750
1751#ifndef _WIN32
1752 ev_ref (EV_A); /* child watcher */
1753 ev_signal_stop (EV_A_ &childev);
1754#endif
1755
1756 loop_destroy (EV_A);
1757}
1758
1759void
1760ev_default_fork (void)
1761{
1762#if EV_MULTIPLICITY
1763 struct ev_loop *loop = ev_default_loop_ptr;
1764#endif
1765
1766 postfork = 1; /* must be in line with ev_loop_fork */
1767} 3284}
1768 3285
1769/*****************************************************************************/ 3286/*****************************************************************************/
1770 3287
1771void 3288void
1772ev_invoke (EV_P_ void *w, int revents) 3289ev_invoke (EV_P_ void *w, int revents)
1773{ 3290{
1774 EV_CB_INVOKE ((W)w, revents); 3291 EV_CB_INVOKE ((W)w, revents);
1775} 3292}
1776 3293
1777inline_speed void 3294unsigned int
1778call_pending (EV_P) 3295ev_pending_count (EV_P) EV_NOEXCEPT
1779{ 3296{
1780 int pri; 3297 int pri;
3298 unsigned int count = 0;
1781 3299
1782 for (pri = NUMPRI; pri--; ) 3300 for (pri = NUMPRI; pri--; )
3301 count += pendingcnt [pri];
3302
3303 return count;
3304}
3305
3306noinline
3307void
3308ev_invoke_pending (EV_P)
3309{
3310 pendingpri = NUMPRI;
3311
3312 do
3313 {
3314 --pendingpri;
3315
3316 /* pendingpri possibly gets modified in the inner loop */
1783 while (pendingcnt [pri]) 3317 while (pendingcnt [pendingpri])
1784 { 3318 {
1785 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3319 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1786 3320
1787 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1788 /* ^ this is no longer true, as pending_w could be here */
1789
1790 p->w->pending = 0; 3321 p->w->pending = 0;
1791 EV_CB_INVOKE (p->w, p->events); 3322 EV_CB_INVOKE (p->w, p->events);
1792 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
1793 } 3324 }
3325 }
3326 while (pendingpri);
1794} 3327}
1795 3328
1796#if EV_IDLE_ENABLE 3329#if EV_IDLE_ENABLE
1797/* make idle watchers pending. this handles the "call-idle */ 3330/* make idle watchers pending. this handles the "call-idle */
1798/* only when higher priorities are idle" logic */ 3331/* only when higher priorities are idle" logic */
… …
1850 EV_FREQUENT_CHECK; 3383 EV_FREQUENT_CHECK;
1851 feed_reverse (EV_A_ (W)w); 3384 feed_reverse (EV_A_ (W)w);
1852 } 3385 }
1853 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3386 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1854 3387
1855 feed_reverse_done (EV_A_ EV_TIMEOUT); 3388 feed_reverse_done (EV_A_ EV_TIMER);
1856 } 3389 }
1857} 3390}
1858 3391
1859#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
3393
3394noinline
3395static void
3396periodic_recalc (EV_P_ ev_periodic *w)
3397{
3398 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3399 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3400
3401 /* the above almost always errs on the low side */
3402 while (at <= ev_rt_now)
3403 {
3404 ev_tstamp nat = at + w->interval;
3405
3406 /* when resolution fails us, we use ev_rt_now */
3407 if (expect_false (nat == at))
3408 {
3409 at = ev_rt_now;
3410 break;
3411 }
3412
3413 at = nat;
3414 }
3415
3416 ev_at (w) = at;
3417}
3418
1860/* make periodics pending */ 3419/* make periodics pending */
1861inline_size void 3420inline_size void
1862periodics_reify (EV_P) 3421periodics_reify (EV_P)
1863{ 3422{
1864 EV_FREQUENT_CHECK; 3423 EV_FREQUENT_CHECK;
1865 3424
1866 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3425 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1867 { 3426 {
1868 int feed_count = 0;
1869
1870 do 3427 do
1871 { 3428 {
1872 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3429 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1873 3430
1874 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3431 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1883 ANHE_at_cache (periodics [HEAP0]); 3440 ANHE_at_cache (periodics [HEAP0]);
1884 downheap (periodics, periodiccnt, HEAP0); 3441 downheap (periodics, periodiccnt, HEAP0);
1885 } 3442 }
1886 else if (w->interval) 3443 else if (w->interval)
1887 { 3444 {
1888 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3445 periodic_recalc (EV_A_ w);
1889 /* if next trigger time is not sufficiently in the future, put it there */
1890 /* this might happen because of floating point inexactness */
1891 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1892 {
1893 ev_at (w) += w->interval;
1894
1895 /* if interval is unreasonably low we might still have a time in the past */
1896 /* so correct this. this will make the periodic very inexact, but the user */
1897 /* has effectively asked to get triggered more often than possible */
1898 if (ev_at (w) < ev_rt_now)
1899 ev_at (w) = ev_rt_now;
1900 }
1901
1902 ANHE_at_cache (periodics [HEAP0]); 3446 ANHE_at_cache (periodics [HEAP0]);
1903 downheap (periodics, periodiccnt, HEAP0); 3447 downheap (periodics, periodiccnt, HEAP0);
1904 } 3448 }
1905 else 3449 else
1906 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3450 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1913 feed_reverse_done (EV_A_ EV_PERIODIC); 3457 feed_reverse_done (EV_A_ EV_PERIODIC);
1914 } 3458 }
1915} 3459}
1916 3460
1917/* simply recalculate all periodics */ 3461/* simply recalculate all periodics */
1918/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3462/* TODO: maybe ensure that at least one event happens when jumping forward? */
1919static void noinline 3463noinline ecb_cold
3464static void
1920periodics_reschedule (EV_P) 3465periodics_reschedule (EV_P)
1921{ 3466{
1922 int i; 3467 int i;
1923 3468
1924 /* adjust periodics after time jump */ 3469 /* adjust periodics after time jump */
… …
1927 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3472 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1928 3473
1929 if (w->reschedule_cb) 3474 if (w->reschedule_cb)
1930 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3475 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1931 else if (w->interval) 3476 else if (w->interval)
1932 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3477 periodic_recalc (EV_A_ w);
1933 3478
1934 ANHE_at_cache (periodics [i]); 3479 ANHE_at_cache (periodics [i]);
1935 } 3480 }
1936 3481
1937 reheap (periodics, periodiccnt); 3482 reheap (periodics, periodiccnt);
1938} 3483}
1939#endif 3484#endif
1940 3485
1941/* adjust all timers by a given offset */ 3486/* adjust all timers by a given offset */
1942static void noinline 3487noinline ecb_cold
3488static void
1943timers_reschedule (EV_P_ ev_tstamp adjust) 3489timers_reschedule (EV_P_ ev_tstamp adjust)
1944{ 3490{
1945 int i; 3491 int i;
1946 3492
1947 for (i = 0; i < timercnt; ++i) 3493 for (i = 0; i < timercnt; ++i)
… …
1951 ANHE_at_cache (*he); 3497 ANHE_at_cache (*he);
1952 } 3498 }
1953} 3499}
1954 3500
1955/* fetch new monotonic and realtime times from the kernel */ 3501/* fetch new monotonic and realtime times from the kernel */
1956/* also detetc if there was a timejump, and act accordingly */ 3502/* also detect if there was a timejump, and act accordingly */
1957inline_speed void 3503inline_speed void
1958time_update (EV_P_ ev_tstamp max_block) 3504time_update (EV_P_ ev_tstamp max_block)
1959{ 3505{
1960#if EV_USE_MONOTONIC 3506#if EV_USE_MONOTONIC
1961 if (expect_true (have_monotonic)) 3507 if (expect_true (have_monotonic))
… …
1984 * doesn't hurt either as we only do this on time-jumps or 3530 * doesn't hurt either as we only do this on time-jumps or
1985 * in the unlikely event of having been preempted here. 3531 * in the unlikely event of having been preempted here.
1986 */ 3532 */
1987 for (i = 4; --i; ) 3533 for (i = 4; --i; )
1988 { 3534 {
3535 ev_tstamp diff;
1989 rtmn_diff = ev_rt_now - mn_now; 3536 rtmn_diff = ev_rt_now - mn_now;
1990 3537
3538 diff = odiff - rtmn_diff;
3539
1991 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3540 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1992 return; /* all is well */ 3541 return; /* all is well */
1993 3542
1994 ev_rt_now = ev_time (); 3543 ev_rt_now = ev_time ();
1995 mn_now = get_clock (); 3544 mn_now = get_clock ();
1996 now_floor = mn_now; 3545 now_floor = mn_now;
… …
2018 3567
2019 mn_now = ev_rt_now; 3568 mn_now = ev_rt_now;
2020 } 3569 }
2021} 3570}
2022 3571
2023static int loop_done; 3572int
2024
2025void
2026ev_loop (EV_P_ int flags) 3573ev_run (EV_P_ int flags)
2027{ 3574{
3575#if EV_FEATURE_API
3576 ++loop_depth;
3577#endif
3578
3579 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3580
2028 loop_done = EVUNLOOP_CANCEL; 3581 loop_done = EVBREAK_CANCEL;
2029 3582
2030 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3583 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2031 3584
2032 do 3585 do
2033 { 3586 {
2034#if EV_VERIFY >= 2 3587#if EV_VERIFY >= 2
2035 ev_loop_verify (EV_A); 3588 ev_verify (EV_A);
2036#endif 3589#endif
2037 3590
2038#ifndef _WIN32 3591#ifndef _WIN32
2039 if (expect_false (curpid)) /* penalise the forking check even more */ 3592 if (expect_false (curpid)) /* penalise the forking check even more */
2040 if (expect_false (getpid () != curpid)) 3593 if (expect_false (getpid () != curpid))
… …
2048 /* we might have forked, so queue fork handlers */ 3601 /* we might have forked, so queue fork handlers */
2049 if (expect_false (postfork)) 3602 if (expect_false (postfork))
2050 if (forkcnt) 3603 if (forkcnt)
2051 { 3604 {
2052 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3605 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2053 call_pending (EV_A); 3606 EV_INVOKE_PENDING;
2054 } 3607 }
2055#endif 3608#endif
2056 3609
3610#if EV_PREPARE_ENABLE
2057 /* queue prepare watchers (and execute them) */ 3611 /* queue prepare watchers (and execute them) */
2058 if (expect_false (preparecnt)) 3612 if (expect_false (preparecnt))
2059 { 3613 {
2060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3614 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2061 call_pending (EV_A); 3615 EV_INVOKE_PENDING;
2062 } 3616 }
3617#endif
3618
3619 if (expect_false (loop_done))
3620 break;
2063 3621
2064 /* we might have forked, so reify kernel state if necessary */ 3622 /* we might have forked, so reify kernel state if necessary */
2065 if (expect_false (postfork)) 3623 if (expect_false (postfork))
2066 loop_fork (EV_A); 3624 loop_fork (EV_A);
2067 3625
… …
2071 /* calculate blocking time */ 3629 /* calculate blocking time */
2072 { 3630 {
2073 ev_tstamp waittime = 0.; 3631 ev_tstamp waittime = 0.;
2074 ev_tstamp sleeptime = 0.; 3632 ev_tstamp sleeptime = 0.;
2075 3633
3634 /* remember old timestamp for io_blocktime calculation */
3635 ev_tstamp prev_mn_now = mn_now;
3636
3637 /* update time to cancel out callback processing overhead */
3638 time_update (EV_A_ 1e100);
3639
3640 /* from now on, we want a pipe-wake-up */
3641 pipe_write_wanted = 1;
3642
3643 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3644
2076 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3645 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2077 { 3646 {
2078 /* update time to cancel out callback processing overhead */
2079 time_update (EV_A_ 1e100);
2080
2081 waittime = MAX_BLOCKTIME; 3647 waittime = MAX_BLOCKTIME;
2082 3648
2083 if (timercnt) 3649 if (timercnt)
2084 { 3650 {
2085 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3651 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2086 if (waittime > to) waittime = to; 3652 if (waittime > to) waittime = to;
2087 } 3653 }
2088 3654
2089#if EV_PERIODIC_ENABLE 3655#if EV_PERIODIC_ENABLE
2090 if (periodiccnt) 3656 if (periodiccnt)
2091 { 3657 {
2092 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3658 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2093 if (waittime > to) waittime = to; 3659 if (waittime > to) waittime = to;
2094 } 3660 }
2095#endif 3661#endif
2096 3662
3663 /* don't let timeouts decrease the waittime below timeout_blocktime */
2097 if (expect_false (waittime < timeout_blocktime)) 3664 if (expect_false (waittime < timeout_blocktime))
2098 waittime = timeout_blocktime; 3665 waittime = timeout_blocktime;
2099 3666
2100 sleeptime = waittime - backend_fudge; 3667 /* at this point, we NEED to wait, so we have to ensure */
3668 /* to pass a minimum nonzero value to the backend */
3669 if (expect_false (waittime < backend_mintime))
3670 waittime = backend_mintime;
2101 3671
3672 /* extra check because io_blocktime is commonly 0 */
2102 if (expect_true (sleeptime > io_blocktime)) 3673 if (expect_false (io_blocktime))
2103 sleeptime = io_blocktime;
2104
2105 if (sleeptime)
2106 { 3674 {
3675 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3676
3677 if (sleeptime > waittime - backend_mintime)
3678 sleeptime = waittime - backend_mintime;
3679
3680 if (expect_true (sleeptime > 0.))
3681 {
2107 ev_sleep (sleeptime); 3682 ev_sleep (sleeptime);
2108 waittime -= sleeptime; 3683 waittime -= sleeptime;
3684 }
2109 } 3685 }
2110 } 3686 }
2111 3687
3688#if EV_FEATURE_API
2112 ++loop_count; 3689 ++loop_count;
3690#endif
3691 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2113 backend_poll (EV_A_ waittime); 3692 backend_poll (EV_A_ waittime);
3693 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3694
3695 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3696
3697 ECB_MEMORY_FENCE_ACQUIRE;
3698 if (pipe_write_skipped)
3699 {
3700 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3701 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3702 }
3703
2114 3704
2115 /* update ev_rt_now, do magic */ 3705 /* update ev_rt_now, do magic */
2116 time_update (EV_A_ waittime + sleeptime); 3706 time_update (EV_A_ waittime + sleeptime);
2117 } 3707 }
2118 3708
… …
2125#if EV_IDLE_ENABLE 3715#if EV_IDLE_ENABLE
2126 /* queue idle watchers unless other events are pending */ 3716 /* queue idle watchers unless other events are pending */
2127 idle_reify (EV_A); 3717 idle_reify (EV_A);
2128#endif 3718#endif
2129 3719
3720#if EV_CHECK_ENABLE
2130 /* queue check watchers, to be executed first */ 3721 /* queue check watchers, to be executed first */
2131 if (expect_false (checkcnt)) 3722 if (expect_false (checkcnt))
2132 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3723 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3724#endif
2133 3725
2134 call_pending (EV_A); 3726 EV_INVOKE_PENDING;
2135 } 3727 }
2136 while (expect_true ( 3728 while (expect_true (
2137 activecnt 3729 activecnt
2138 && !loop_done 3730 && !loop_done
2139 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3731 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2140 )); 3732 ));
2141 3733
2142 if (loop_done == EVUNLOOP_ONE) 3734 if (loop_done == EVBREAK_ONE)
2143 loop_done = EVUNLOOP_CANCEL; 3735 loop_done = EVBREAK_CANCEL;
2144}
2145 3736
3737#if EV_FEATURE_API
3738 --loop_depth;
3739#endif
3740
3741 return activecnt;
3742}
3743
2146void 3744void
2147ev_unloop (EV_P_ int how) 3745ev_break (EV_P_ int how) EV_NOEXCEPT
2148{ 3746{
2149 loop_done = how; 3747 loop_done = how;
2150} 3748}
2151 3749
2152void 3750void
2153ev_ref (EV_P) 3751ev_ref (EV_P) EV_NOEXCEPT
2154{ 3752{
2155 ++activecnt; 3753 ++activecnt;
2156} 3754}
2157 3755
2158void 3756void
2159ev_unref (EV_P) 3757ev_unref (EV_P) EV_NOEXCEPT
2160{ 3758{
2161 --activecnt; 3759 --activecnt;
2162} 3760}
2163 3761
2164void 3762void
2165ev_now_update (EV_P) 3763ev_now_update (EV_P) EV_NOEXCEPT
2166{ 3764{
2167 time_update (EV_A_ 1e100); 3765 time_update (EV_A_ 1e100);
2168} 3766}
2169 3767
2170void 3768void
2171ev_suspend (EV_P) 3769ev_suspend (EV_P) EV_NOEXCEPT
2172{ 3770{
2173 ev_now_update (EV_A); 3771 ev_now_update (EV_A);
2174} 3772}
2175 3773
2176void 3774void
2177ev_resume (EV_P) 3775ev_resume (EV_P) EV_NOEXCEPT
2178{ 3776{
2179 ev_tstamp mn_prev = mn_now; 3777 ev_tstamp mn_prev = mn_now;
2180 3778
2181 ev_now_update (EV_A); 3779 ev_now_update (EV_A);
2182 timers_reschedule (EV_A_ mn_now - mn_prev); 3780 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2199inline_size void 3797inline_size void
2200wlist_del (WL *head, WL elem) 3798wlist_del (WL *head, WL elem)
2201{ 3799{
2202 while (*head) 3800 while (*head)
2203 { 3801 {
2204 if (*head == elem) 3802 if (expect_true (*head == elem))
2205 { 3803 {
2206 *head = elem->next; 3804 *head = elem->next;
2207 return; 3805 break;
2208 } 3806 }
2209 3807
2210 head = &(*head)->next; 3808 head = &(*head)->next;
2211 } 3809 }
2212} 3810}
… …
2221 w->pending = 0; 3819 w->pending = 0;
2222 } 3820 }
2223} 3821}
2224 3822
2225int 3823int
2226ev_clear_pending (EV_P_ void *w) 3824ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2227{ 3825{
2228 W w_ = (W)w; 3826 W w_ = (W)w;
2229 int pending = w_->pending; 3827 int pending = w_->pending;
2230 3828
2231 if (expect_true (pending)) 3829 if (expect_true (pending))
… …
2240} 3838}
2241 3839
2242inline_size void 3840inline_size void
2243pri_adjust (EV_P_ W w) 3841pri_adjust (EV_P_ W w)
2244{ 3842{
2245 int pri = w->priority; 3843 int pri = ev_priority (w);
2246 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3844 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2247 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3845 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2248 w->priority = pri; 3846 ev_set_priority (w, pri);
2249} 3847}
2250 3848
2251inline_speed void 3849inline_speed void
2252ev_start (EV_P_ W w, int active) 3850ev_start (EV_P_ W w, int active)
2253{ 3851{
… …
2263 w->active = 0; 3861 w->active = 0;
2264} 3862}
2265 3863
2266/*****************************************************************************/ 3864/*****************************************************************************/
2267 3865
2268void noinline 3866noinline
3867void
2269ev_io_start (EV_P_ ev_io *w) 3868ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2270{ 3869{
2271 int fd = w->fd; 3870 int fd = w->fd;
2272 3871
2273 if (expect_false (ev_is_active (w))) 3872 if (expect_false (ev_is_active (w)))
2274 return; 3873 return;
2275 3874
2276 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3875 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2277 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3876 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2278 3877
2279 EV_FREQUENT_CHECK; 3878 EV_FREQUENT_CHECK;
2280 3879
2281 ev_start (EV_A_ (W)w, 1); 3880 ev_start (EV_A_ (W)w, 1);
2282 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3881 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2283 wlist_add (&anfds[fd].head, (WL)w); 3882 wlist_add (&anfds[fd].head, (WL)w);
2284 3883
3884 /* common bug, apparently */
3885 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3886
2285 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3887 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2286 w->events &= ~EV__IOFDSET; 3888 w->events &= ~EV__IOFDSET;
2287 3889
2288 EV_FREQUENT_CHECK; 3890 EV_FREQUENT_CHECK;
2289} 3891}
2290 3892
2291void noinline 3893noinline
3894void
2292ev_io_stop (EV_P_ ev_io *w) 3895ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2293{ 3896{
2294 clear_pending (EV_A_ (W)w); 3897 clear_pending (EV_A_ (W)w);
2295 if (expect_false (!ev_is_active (w))) 3898 if (expect_false (!ev_is_active (w)))
2296 return; 3899 return;
2297 3900
… …
2300 EV_FREQUENT_CHECK; 3903 EV_FREQUENT_CHECK;
2301 3904
2302 wlist_del (&anfds[w->fd].head, (WL)w); 3905 wlist_del (&anfds[w->fd].head, (WL)w);
2303 ev_stop (EV_A_ (W)w); 3906 ev_stop (EV_A_ (W)w);
2304 3907
2305 fd_change (EV_A_ w->fd, 1); 3908 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2306 3909
2307 EV_FREQUENT_CHECK; 3910 EV_FREQUENT_CHECK;
2308} 3911}
2309 3912
2310void noinline 3913noinline
3914void
2311ev_timer_start (EV_P_ ev_timer *w) 3915ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2312{ 3916{
2313 if (expect_false (ev_is_active (w))) 3917 if (expect_false (ev_is_active (w)))
2314 return; 3918 return;
2315 3919
2316 ev_at (w) += mn_now; 3920 ev_at (w) += mn_now;
… …
2329 EV_FREQUENT_CHECK; 3933 EV_FREQUENT_CHECK;
2330 3934
2331 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3935 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2332} 3936}
2333 3937
2334void noinline 3938noinline
3939void
2335ev_timer_stop (EV_P_ ev_timer *w) 3940ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2336{ 3941{
2337 clear_pending (EV_A_ (W)w); 3942 clear_pending (EV_A_ (W)w);
2338 if (expect_false (!ev_is_active (w))) 3943 if (expect_false (!ev_is_active (w)))
2339 return; 3944 return;
2340 3945
… …
2352 timers [active] = timers [timercnt + HEAP0]; 3957 timers [active] = timers [timercnt + HEAP0];
2353 adjustheap (timers, timercnt, active); 3958 adjustheap (timers, timercnt, active);
2354 } 3959 }
2355 } 3960 }
2356 3961
2357 EV_FREQUENT_CHECK;
2358
2359 ev_at (w) -= mn_now; 3962 ev_at (w) -= mn_now;
2360 3963
2361 ev_stop (EV_A_ (W)w); 3964 ev_stop (EV_A_ (W)w);
2362}
2363 3965
3966 EV_FREQUENT_CHECK;
3967}
3968
2364void noinline 3969noinline
3970void
2365ev_timer_again (EV_P_ ev_timer *w) 3971ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2366{ 3972{
2367 EV_FREQUENT_CHECK; 3973 EV_FREQUENT_CHECK;
3974
3975 clear_pending (EV_A_ (W)w);
2368 3976
2369 if (ev_is_active (w)) 3977 if (ev_is_active (w))
2370 { 3978 {
2371 if (w->repeat) 3979 if (w->repeat)
2372 { 3980 {
… …
2384 } 3992 }
2385 3993
2386 EV_FREQUENT_CHECK; 3994 EV_FREQUENT_CHECK;
2387} 3995}
2388 3996
3997ev_tstamp
3998ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3999{
4000 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
4001}
4002
2389#if EV_PERIODIC_ENABLE 4003#if EV_PERIODIC_ENABLE
2390void noinline 4004noinline
4005void
2391ev_periodic_start (EV_P_ ev_periodic *w) 4006ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2392{ 4007{
2393 if (expect_false (ev_is_active (w))) 4008 if (expect_false (ev_is_active (w)))
2394 return; 4009 return;
2395 4010
2396 if (w->reschedule_cb) 4011 if (w->reschedule_cb)
2397 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4012 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2398 else if (w->interval) 4013 else if (w->interval)
2399 { 4014 {
2400 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4015 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2401 /* this formula differs from the one in periodic_reify because we do not always round up */ 4016 periodic_recalc (EV_A_ w);
2402 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2403 } 4017 }
2404 else 4018 else
2405 ev_at (w) = w->offset; 4019 ev_at (w) = w->offset;
2406 4020
2407 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
… …
2416 EV_FREQUENT_CHECK; 4030 EV_FREQUENT_CHECK;
2417 4031
2418 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4032 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2419} 4033}
2420 4034
2421void noinline 4035noinline
4036void
2422ev_periodic_stop (EV_P_ ev_periodic *w) 4037ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2423{ 4038{
2424 clear_pending (EV_A_ (W)w); 4039 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w))) 4040 if (expect_false (!ev_is_active (w)))
2426 return; 4041 return;
2427 4042
… …
2439 periodics [active] = periodics [periodiccnt + HEAP0]; 4054 periodics [active] = periodics [periodiccnt + HEAP0];
2440 adjustheap (periodics, periodiccnt, active); 4055 adjustheap (periodics, periodiccnt, active);
2441 } 4056 }
2442 } 4057 }
2443 4058
2444 EV_FREQUENT_CHECK;
2445
2446 ev_stop (EV_A_ (W)w); 4059 ev_stop (EV_A_ (W)w);
2447}
2448 4060
4061 EV_FREQUENT_CHECK;
4062}
4063
2449void noinline 4064noinline
4065void
2450ev_periodic_again (EV_P_ ev_periodic *w) 4066ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2451{ 4067{
2452 /* TODO: use adjustheap and recalculation */ 4068 /* TODO: use adjustheap and recalculation */
2453 ev_periodic_stop (EV_A_ w); 4069 ev_periodic_stop (EV_A_ w);
2454 ev_periodic_start (EV_A_ w); 4070 ev_periodic_start (EV_A_ w);
2455} 4071}
… …
2457 4073
2458#ifndef SA_RESTART 4074#ifndef SA_RESTART
2459# define SA_RESTART 0 4075# define SA_RESTART 0
2460#endif 4076#endif
2461 4077
4078#if EV_SIGNAL_ENABLE
4079
2462void noinline 4080noinline
4081void
2463ev_signal_start (EV_P_ ev_signal *w) 4082ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2464{ 4083{
2465#if EV_MULTIPLICITY
2466 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2467#endif
2468 if (expect_false (ev_is_active (w))) 4084 if (expect_false (ev_is_active (w)))
2469 return; 4085 return;
2470 4086
2471 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4087 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2472 4088
2473 evpipe_init (EV_A); 4089#if EV_MULTIPLICITY
4090 assert (("libev: a signal must not be attached to two different loops",
4091 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2474 4092
2475 EV_FREQUENT_CHECK; 4093 signals [w->signum - 1].loop = EV_A;
4094 ECB_MEMORY_FENCE_RELEASE;
4095#endif
2476 4096
4097 EV_FREQUENT_CHECK;
4098
4099#if EV_USE_SIGNALFD
4100 if (sigfd == -2)
2477 { 4101 {
2478#ifndef _WIN32 4102 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2479 sigset_t full, prev; 4103 if (sigfd < 0 && errno == EINVAL)
2480 sigfillset (&full); 4104 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2481 sigprocmask (SIG_SETMASK, &full, &prev);
2482#endif
2483 4105
2484 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4106 if (sigfd >= 0)
4107 {
4108 fd_intern (sigfd); /* doing it twice will not hurt */
2485 4109
2486#ifndef _WIN32 4110 sigemptyset (&sigfd_set);
2487 sigprocmask (SIG_SETMASK, &prev, 0); 4111
2488#endif 4112 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4113 ev_set_priority (&sigfd_w, EV_MAXPRI);
4114 ev_io_start (EV_A_ &sigfd_w);
4115 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4116 }
2489 } 4117 }
4118
4119 if (sigfd >= 0)
4120 {
4121 /* TODO: check .head */
4122 sigaddset (&sigfd_set, w->signum);
4123 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4124
4125 signalfd (sigfd, &sigfd_set, 0);
4126 }
4127#endif
2490 4128
2491 ev_start (EV_A_ (W)w, 1); 4129 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&signals [w->signum - 1].head, (WL)w); 4130 wlist_add (&signals [w->signum - 1].head, (WL)w);
2493 4131
2494 if (!((WL)w)->next) 4132 if (!((WL)w)->next)
4133# if EV_USE_SIGNALFD
4134 if (sigfd < 0) /*TODO*/
4135# endif
2495 { 4136 {
2496#if _WIN32 4137# ifdef _WIN32
4138 evpipe_init (EV_A);
4139
2497 signal (w->signum, ev_sighandler); 4140 signal (w->signum, ev_sighandler);
2498#else 4141# else
2499 struct sigaction sa; 4142 struct sigaction sa;
4143
4144 evpipe_init (EV_A);
4145
2500 sa.sa_handler = ev_sighandler; 4146 sa.sa_handler = ev_sighandler;
2501 sigfillset (&sa.sa_mask); 4147 sigfillset (&sa.sa_mask);
2502 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4148 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2503 sigaction (w->signum, &sa, 0); 4149 sigaction (w->signum, &sa, 0);
4150
4151 if (origflags & EVFLAG_NOSIGMASK)
4152 {
4153 sigemptyset (&sa.sa_mask);
4154 sigaddset (&sa.sa_mask, w->signum);
4155 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4156 }
2504#endif 4157#endif
2505 } 4158 }
2506 4159
2507 EV_FREQUENT_CHECK; 4160 EV_FREQUENT_CHECK;
2508} 4161}
2509 4162
2510void noinline 4163noinline
4164void
2511ev_signal_stop (EV_P_ ev_signal *w) 4165ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2512{ 4166{
2513 clear_pending (EV_A_ (W)w); 4167 clear_pending (EV_A_ (W)w);
2514 if (expect_false (!ev_is_active (w))) 4168 if (expect_false (!ev_is_active (w)))
2515 return; 4169 return;
2516 4170
… …
2518 4172
2519 wlist_del (&signals [w->signum - 1].head, (WL)w); 4173 wlist_del (&signals [w->signum - 1].head, (WL)w);
2520 ev_stop (EV_A_ (W)w); 4174 ev_stop (EV_A_ (W)w);
2521 4175
2522 if (!signals [w->signum - 1].head) 4176 if (!signals [w->signum - 1].head)
4177 {
4178#if EV_MULTIPLICITY
4179 signals [w->signum - 1].loop = 0; /* unattach from signal */
4180#endif
4181#if EV_USE_SIGNALFD
4182 if (sigfd >= 0)
4183 {
4184 sigset_t ss;
4185
4186 sigemptyset (&ss);
4187 sigaddset (&ss, w->signum);
4188 sigdelset (&sigfd_set, w->signum);
4189
4190 signalfd (sigfd, &sigfd_set, 0);
4191 sigprocmask (SIG_UNBLOCK, &ss, 0);
4192 }
4193 else
4194#endif
2523 signal (w->signum, SIG_DFL); 4195 signal (w->signum, SIG_DFL);
4196 }
2524 4197
2525 EV_FREQUENT_CHECK; 4198 EV_FREQUENT_CHECK;
2526} 4199}
2527 4200
4201#endif
4202
4203#if EV_CHILD_ENABLE
4204
2528void 4205void
2529ev_child_start (EV_P_ ev_child *w) 4206ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2530{ 4207{
2531#if EV_MULTIPLICITY 4208#if EV_MULTIPLICITY
2532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4209 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2533#endif 4210#endif
2534 if (expect_false (ev_is_active (w))) 4211 if (expect_false (ev_is_active (w)))
2535 return; 4212 return;
2536 4213
2537 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
2538 4215
2539 ev_start (EV_A_ (W)w, 1); 4216 ev_start (EV_A_ (W)w, 1);
2540 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4217 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2541 4218
2542 EV_FREQUENT_CHECK; 4219 EV_FREQUENT_CHECK;
2543} 4220}
2544 4221
2545void 4222void
2546ev_child_stop (EV_P_ ev_child *w) 4223ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2547{ 4224{
2548 clear_pending (EV_A_ (W)w); 4225 clear_pending (EV_A_ (W)w);
2549 if (expect_false (!ev_is_active (w))) 4226 if (expect_false (!ev_is_active (w)))
2550 return; 4227 return;
2551 4228
2552 EV_FREQUENT_CHECK; 4229 EV_FREQUENT_CHECK;
2553 4230
2554 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4231 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2555 ev_stop (EV_A_ (W)w); 4232 ev_stop (EV_A_ (W)w);
2556 4233
2557 EV_FREQUENT_CHECK; 4234 EV_FREQUENT_CHECK;
2558} 4235}
4236
4237#endif
2559 4238
2560#if EV_STAT_ENABLE 4239#if EV_STAT_ENABLE
2561 4240
2562# ifdef _WIN32 4241# ifdef _WIN32
2563# undef lstat 4242# undef lstat
… …
2566 4245
2567#define DEF_STAT_INTERVAL 5.0074891 4246#define DEF_STAT_INTERVAL 5.0074891
2568#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4247#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2569#define MIN_STAT_INTERVAL 0.1074891 4248#define MIN_STAT_INTERVAL 0.1074891
2570 4249
2571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4250noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2572 4251
2573#if EV_USE_INOTIFY 4252#if EV_USE_INOTIFY
2574# define EV_INOTIFY_BUFSIZE 8192
2575 4253
2576static void noinline 4254/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4255# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4256
4257noinline
4258static void
2577infy_add (EV_P_ ev_stat *w) 4259infy_add (EV_P_ ev_stat *w)
2578{ 4260{
2579 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4261 w->wd = inotify_add_watch (fs_fd, w->path,
4262 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4263 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4264 | IN_DONT_FOLLOW | IN_MASK_ADD);
2580 4265
2581 if (w->wd < 0) 4266 if (w->wd >= 0)
4267 {
4268 struct statfs sfs;
4269
4270 /* now local changes will be tracked by inotify, but remote changes won't */
4271 /* unless the filesystem is known to be local, we therefore still poll */
4272 /* also do poll on <2.6.25, but with normal frequency */
4273
4274 if (!fs_2625)
4275 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4276 else if (!statfs (w->path, &sfs)
4277 && (sfs.f_type == 0x1373 /* devfs */
4278 || sfs.f_type == 0x4006 /* fat */
4279 || sfs.f_type == 0x4d44 /* msdos */
4280 || sfs.f_type == 0xEF53 /* ext2/3 */
4281 || sfs.f_type == 0x72b6 /* jffs2 */
4282 || sfs.f_type == 0x858458f6 /* ramfs */
4283 || sfs.f_type == 0x5346544e /* ntfs */
4284 || sfs.f_type == 0x3153464a /* jfs */
4285 || sfs.f_type == 0x9123683e /* btrfs */
4286 || sfs.f_type == 0x52654973 /* reiser3 */
4287 || sfs.f_type == 0x01021994 /* tmpfs */
4288 || sfs.f_type == 0x58465342 /* xfs */))
4289 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4290 else
4291 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2582 { 4292 }
4293 else
4294 {
4295 /* can't use inotify, continue to stat */
2583 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4296 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2584 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2585 4297
2586 /* monitor some parent directory for speedup hints */ 4298 /* if path is not there, monitor some parent directory for speedup hints */
2587 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4299 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2588 /* but an efficiency issue only */ 4300 /* but an efficiency issue only */
2589 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4301 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2590 { 4302 {
2591 char path [4096]; 4303 char path [4096];
… …
2601 if (!pend || pend == path) 4313 if (!pend || pend == path)
2602 break; 4314 break;
2603 4315
2604 *pend = 0; 4316 *pend = 0;
2605 w->wd = inotify_add_watch (fs_fd, path, mask); 4317 w->wd = inotify_add_watch (fs_fd, path, mask);
2606 } 4318 }
2607 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4319 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2608 } 4320 }
2609 } 4321 }
2610 4322
2611 if (w->wd >= 0) 4323 if (w->wd >= 0)
2612 {
2613 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4324 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2614 4325
2615 /* now local changes will be tracked by inotify, but remote changes won't */ 4326 /* now re-arm timer, if required */
2616 /* unless the filesystem it known to be local, we therefore still poll */ 4327 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2617 /* also do poll on <2.6.25, but with normal frequency */
2618 struct statfs sfs;
2619
2620 if (fs_2625 && !statfs (w->path, &sfs))
2621 if (sfs.f_type == 0x1373 /* devfs */
2622 || sfs.f_type == 0xEF53 /* ext2/3 */
2623 || sfs.f_type == 0x3153464a /* jfs */
2624 || sfs.f_type == 0x52654973 /* reiser3 */
2625 || sfs.f_type == 0x01021994 /* tempfs */
2626 || sfs.f_type == 0x58465342 /* xfs */)
2627 return;
2628
2629 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2630 ev_timer_again (EV_A_ &w->timer); 4328 ev_timer_again (EV_A_ &w->timer);
2631 } 4329 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2632} 4330}
2633 4331
2634static void noinline 4332noinline
4333static void
2635infy_del (EV_P_ ev_stat *w) 4334infy_del (EV_P_ ev_stat *w)
2636{ 4335{
2637 int slot; 4336 int slot;
2638 int wd = w->wd; 4337 int wd = w->wd;
2639 4338
2640 if (wd < 0) 4339 if (wd < 0)
2641 return; 4340 return;
2642 4341
2643 w->wd = -2; 4342 w->wd = -2;
2644 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4343 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2645 wlist_del (&fs_hash [slot].head, (WL)w); 4344 wlist_del (&fs_hash [slot].head, (WL)w);
2646 4345
2647 /* remove this watcher, if others are watching it, they will rearm */ 4346 /* remove this watcher, if others are watching it, they will rearm */
2648 inotify_rm_watch (fs_fd, wd); 4347 inotify_rm_watch (fs_fd, wd);
2649} 4348}
2650 4349
2651static void noinline 4350noinline
4351static void
2652infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4352infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2653{ 4353{
2654 if (slot < 0) 4354 if (slot < 0)
2655 /* overflow, need to check for all hash slots */ 4355 /* overflow, need to check for all hash slots */
2656 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4356 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2657 infy_wd (EV_A_ slot, wd, ev); 4357 infy_wd (EV_A_ slot, wd, ev);
2658 else 4358 else
2659 { 4359 {
2660 WL w_; 4360 WL w_;
2661 4361
2662 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4362 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2663 { 4363 {
2664 ev_stat *w = (ev_stat *)w_; 4364 ev_stat *w = (ev_stat *)w_;
2665 w_ = w_->next; /* lets us remove this watcher and all before it */ 4365 w_ = w_->next; /* lets us remove this watcher and all before it */
2666 4366
2667 if (w->wd == wd || wd == -1) 4367 if (w->wd == wd || wd == -1)
2668 { 4368 {
2669 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4369 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2670 { 4370 {
2671 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4371 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2672 w->wd = -1; 4372 w->wd = -1;
2673 infy_add (EV_A_ w); /* re-add, no matter what */ 4373 infy_add (EV_A_ w); /* re-add, no matter what */
2674 } 4374 }
2675 4375
2676 stat_timer_cb (EV_A_ &w->timer, 0); 4376 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2681 4381
2682static void 4382static void
2683infy_cb (EV_P_ ev_io *w, int revents) 4383infy_cb (EV_P_ ev_io *w, int revents)
2684{ 4384{
2685 char buf [EV_INOTIFY_BUFSIZE]; 4385 char buf [EV_INOTIFY_BUFSIZE];
2686 struct inotify_event *ev = (struct inotify_event *)buf;
2687 int ofs; 4386 int ofs;
2688 int len = read (fs_fd, buf, sizeof (buf)); 4387 int len = read (fs_fd, buf, sizeof (buf));
2689 4388
2690 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4389 for (ofs = 0; ofs < len; )
4390 {
4391 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2691 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4392 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4393 ofs += sizeof (struct inotify_event) + ev->len;
4394 }
2692} 4395}
2693 4396
2694inline_size void 4397inline_size ecb_cold
4398void
2695check_2625 (EV_P) 4399ev_check_2625 (EV_P)
2696{ 4400{
2697 /* kernels < 2.6.25 are borked 4401 /* kernels < 2.6.25 are borked
2698 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4402 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2699 */ 4403 */
2700 struct utsname buf; 4404 if (ev_linux_version () < 0x020619)
2701 int major, minor, micro;
2702
2703 if (uname (&buf))
2704 return; 4405 return;
2705 4406
2706 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2707 return;
2708
2709 if (major < 2
2710 || (major == 2 && minor < 6)
2711 || (major == 2 && minor == 6 && micro < 25))
2712 return;
2713
2714 fs_2625 = 1; 4407 fs_2625 = 1;
4408}
4409
4410inline_size int
4411infy_newfd (void)
4412{
4413#if defined IN_CLOEXEC && defined IN_NONBLOCK
4414 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4415 if (fd >= 0)
4416 return fd;
4417#endif
4418 return inotify_init ();
2715} 4419}
2716 4420
2717inline_size void 4421inline_size void
2718infy_init (EV_P) 4422infy_init (EV_P)
2719{ 4423{
2720 if (fs_fd != -2) 4424 if (fs_fd != -2)
2721 return; 4425 return;
2722 4426
2723 fs_fd = -1; 4427 fs_fd = -1;
2724 4428
2725 check_2625 (EV_A); 4429 ev_check_2625 (EV_A);
2726 4430
2727 fs_fd = inotify_init (); 4431 fs_fd = infy_newfd ();
2728 4432
2729 if (fs_fd >= 0) 4433 if (fs_fd >= 0)
2730 { 4434 {
4435 fd_intern (fs_fd);
2731 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4436 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2732 ev_set_priority (&fs_w, EV_MAXPRI); 4437 ev_set_priority (&fs_w, EV_MAXPRI);
2733 ev_io_start (EV_A_ &fs_w); 4438 ev_io_start (EV_A_ &fs_w);
4439 ev_unref (EV_A);
2734 } 4440 }
2735} 4441}
2736 4442
2737inline_size void 4443inline_size void
2738infy_fork (EV_P) 4444infy_fork (EV_P)
… …
2740 int slot; 4446 int slot;
2741 4447
2742 if (fs_fd < 0) 4448 if (fs_fd < 0)
2743 return; 4449 return;
2744 4450
4451 ev_ref (EV_A);
4452 ev_io_stop (EV_A_ &fs_w);
2745 close (fs_fd); 4453 close (fs_fd);
2746 fs_fd = inotify_init (); 4454 fs_fd = infy_newfd ();
2747 4455
4456 if (fs_fd >= 0)
4457 {
4458 fd_intern (fs_fd);
4459 ev_io_set (&fs_w, fs_fd, EV_READ);
4460 ev_io_start (EV_A_ &fs_w);
4461 ev_unref (EV_A);
4462 }
4463
2748 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4464 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2749 { 4465 {
2750 WL w_ = fs_hash [slot].head; 4466 WL w_ = fs_hash [slot].head;
2751 fs_hash [slot].head = 0; 4467 fs_hash [slot].head = 0;
2752 4468
2753 while (w_) 4469 while (w_)
… …
2758 w->wd = -1; 4474 w->wd = -1;
2759 4475
2760 if (fs_fd >= 0) 4476 if (fs_fd >= 0)
2761 infy_add (EV_A_ w); /* re-add, no matter what */ 4477 infy_add (EV_A_ w); /* re-add, no matter what */
2762 else 4478 else
4479 {
4480 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4481 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2763 ev_timer_again (EV_A_ &w->timer); 4482 ev_timer_again (EV_A_ &w->timer);
4483 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4484 }
2764 } 4485 }
2765 } 4486 }
2766} 4487}
2767 4488
2768#endif 4489#endif
… …
2772#else 4493#else
2773# define EV_LSTAT(p,b) lstat (p, b) 4494# define EV_LSTAT(p,b) lstat (p, b)
2774#endif 4495#endif
2775 4496
2776void 4497void
2777ev_stat_stat (EV_P_ ev_stat *w) 4498ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2778{ 4499{
2779 if (lstat (w->path, &w->attr) < 0) 4500 if (lstat (w->path, &w->attr) < 0)
2780 w->attr.st_nlink = 0; 4501 w->attr.st_nlink = 0;
2781 else if (!w->attr.st_nlink) 4502 else if (!w->attr.st_nlink)
2782 w->attr.st_nlink = 1; 4503 w->attr.st_nlink = 1;
2783} 4504}
2784 4505
2785static void noinline 4506noinline
4507static void
2786stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4508stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2787{ 4509{
2788 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4510 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2789 4511
2790 /* we copy this here each the time so that */ 4512 ev_statdata prev = w->attr;
2791 /* prev has the old value when the callback gets invoked */
2792 w->prev = w->attr;
2793 ev_stat_stat (EV_A_ w); 4513 ev_stat_stat (EV_A_ w);
2794 4514
2795 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4515 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2796 if ( 4516 if (
2797 w->prev.st_dev != w->attr.st_dev 4517 prev.st_dev != w->attr.st_dev
2798 || w->prev.st_ino != w->attr.st_ino 4518 || prev.st_ino != w->attr.st_ino
2799 || w->prev.st_mode != w->attr.st_mode 4519 || prev.st_mode != w->attr.st_mode
2800 || w->prev.st_nlink != w->attr.st_nlink 4520 || prev.st_nlink != w->attr.st_nlink
2801 || w->prev.st_uid != w->attr.st_uid 4521 || prev.st_uid != w->attr.st_uid
2802 || w->prev.st_gid != w->attr.st_gid 4522 || prev.st_gid != w->attr.st_gid
2803 || w->prev.st_rdev != w->attr.st_rdev 4523 || prev.st_rdev != w->attr.st_rdev
2804 || w->prev.st_size != w->attr.st_size 4524 || prev.st_size != w->attr.st_size
2805 || w->prev.st_atime != w->attr.st_atime 4525 || prev.st_atime != w->attr.st_atime
2806 || w->prev.st_mtime != w->attr.st_mtime 4526 || prev.st_mtime != w->attr.st_mtime
2807 || w->prev.st_ctime != w->attr.st_ctime 4527 || prev.st_ctime != w->attr.st_ctime
2808 ) { 4528 ) {
4529 /* we only update w->prev on actual differences */
4530 /* in case we test more often than invoke the callback, */
4531 /* to ensure that prev is always different to attr */
4532 w->prev = prev;
4533
2809 #if EV_USE_INOTIFY 4534 #if EV_USE_INOTIFY
2810 if (fs_fd >= 0) 4535 if (fs_fd >= 0)
2811 { 4536 {
2812 infy_del (EV_A_ w); 4537 infy_del (EV_A_ w);
2813 infy_add (EV_A_ w); 4538 infy_add (EV_A_ w);
… …
2818 ev_feed_event (EV_A_ w, EV_STAT); 4543 ev_feed_event (EV_A_ w, EV_STAT);
2819 } 4544 }
2820} 4545}
2821 4546
2822void 4547void
2823ev_stat_start (EV_P_ ev_stat *w) 4548ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2824{ 4549{
2825 if (expect_false (ev_is_active (w))) 4550 if (expect_false (ev_is_active (w)))
2826 return; 4551 return;
2827 4552
2828 ev_stat_stat (EV_A_ w); 4553 ev_stat_stat (EV_A_ w);
… …
2838 4563
2839 if (fs_fd >= 0) 4564 if (fs_fd >= 0)
2840 infy_add (EV_A_ w); 4565 infy_add (EV_A_ w);
2841 else 4566 else
2842#endif 4567#endif
4568 {
2843 ev_timer_again (EV_A_ &w->timer); 4569 ev_timer_again (EV_A_ &w->timer);
4570 ev_unref (EV_A);
4571 }
2844 4572
2845 ev_start (EV_A_ (W)w, 1); 4573 ev_start (EV_A_ (W)w, 1);
2846 4574
2847 EV_FREQUENT_CHECK; 4575 EV_FREQUENT_CHECK;
2848} 4576}
2849 4577
2850void 4578void
2851ev_stat_stop (EV_P_ ev_stat *w) 4579ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2852{ 4580{
2853 clear_pending (EV_A_ (W)w); 4581 clear_pending (EV_A_ (W)w);
2854 if (expect_false (!ev_is_active (w))) 4582 if (expect_false (!ev_is_active (w)))
2855 return; 4583 return;
2856 4584
2857 EV_FREQUENT_CHECK; 4585 EV_FREQUENT_CHECK;
2858 4586
2859#if EV_USE_INOTIFY 4587#if EV_USE_INOTIFY
2860 infy_del (EV_A_ w); 4588 infy_del (EV_A_ w);
2861#endif 4589#endif
4590
4591 if (ev_is_active (&w->timer))
4592 {
4593 ev_ref (EV_A);
2862 ev_timer_stop (EV_A_ &w->timer); 4594 ev_timer_stop (EV_A_ &w->timer);
4595 }
2863 4596
2864 ev_stop (EV_A_ (W)w); 4597 ev_stop (EV_A_ (W)w);
2865 4598
2866 EV_FREQUENT_CHECK; 4599 EV_FREQUENT_CHECK;
2867} 4600}
2868#endif 4601#endif
2869 4602
2870#if EV_IDLE_ENABLE 4603#if EV_IDLE_ENABLE
2871void 4604void
2872ev_idle_start (EV_P_ ev_idle *w) 4605ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2873{ 4606{
2874 if (expect_false (ev_is_active (w))) 4607 if (expect_false (ev_is_active (w)))
2875 return; 4608 return;
2876 4609
2877 pri_adjust (EV_A_ (W)w); 4610 pri_adjust (EV_A_ (W)w);
… …
2890 4623
2891 EV_FREQUENT_CHECK; 4624 EV_FREQUENT_CHECK;
2892} 4625}
2893 4626
2894void 4627void
2895ev_idle_stop (EV_P_ ev_idle *w) 4628ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2896{ 4629{
2897 clear_pending (EV_A_ (W)w); 4630 clear_pending (EV_A_ (W)w);
2898 if (expect_false (!ev_is_active (w))) 4631 if (expect_false (!ev_is_active (w)))
2899 return; 4632 return;
2900 4633
… …
2912 4645
2913 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
2914} 4647}
2915#endif 4648#endif
2916 4649
4650#if EV_PREPARE_ENABLE
2917void 4651void
2918ev_prepare_start (EV_P_ ev_prepare *w) 4652ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2919{ 4653{
2920 if (expect_false (ev_is_active (w))) 4654 if (expect_false (ev_is_active (w)))
2921 return; 4655 return;
2922 4656
2923 EV_FREQUENT_CHECK; 4657 EV_FREQUENT_CHECK;
… …
2928 4662
2929 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
2930} 4664}
2931 4665
2932void 4666void
2933ev_prepare_stop (EV_P_ ev_prepare *w) 4667ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2934{ 4668{
2935 clear_pending (EV_A_ (W)w); 4669 clear_pending (EV_A_ (W)w);
2936 if (expect_false (!ev_is_active (w))) 4670 if (expect_false (!ev_is_active (w)))
2937 return; 4671 return;
2938 4672
… …
2947 4681
2948 ev_stop (EV_A_ (W)w); 4682 ev_stop (EV_A_ (W)w);
2949 4683
2950 EV_FREQUENT_CHECK; 4684 EV_FREQUENT_CHECK;
2951} 4685}
4686#endif
2952 4687
4688#if EV_CHECK_ENABLE
2953void 4689void
2954ev_check_start (EV_P_ ev_check *w) 4690ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2955{ 4691{
2956 if (expect_false (ev_is_active (w))) 4692 if (expect_false (ev_is_active (w)))
2957 return; 4693 return;
2958 4694
2959 EV_FREQUENT_CHECK; 4695 EV_FREQUENT_CHECK;
… …
2964 4700
2965 EV_FREQUENT_CHECK; 4701 EV_FREQUENT_CHECK;
2966} 4702}
2967 4703
2968void 4704void
2969ev_check_stop (EV_P_ ev_check *w) 4705ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2970{ 4706{
2971 clear_pending (EV_A_ (W)w); 4707 clear_pending (EV_A_ (W)w);
2972 if (expect_false (!ev_is_active (w))) 4708 if (expect_false (!ev_is_active (w)))
2973 return; 4709 return;
2974 4710
… …
2983 4719
2984 ev_stop (EV_A_ (W)w); 4720 ev_stop (EV_A_ (W)w);
2985 4721
2986 EV_FREQUENT_CHECK; 4722 EV_FREQUENT_CHECK;
2987} 4723}
4724#endif
2988 4725
2989#if EV_EMBED_ENABLE 4726#if EV_EMBED_ENABLE
2990void noinline 4727noinline
4728void
2991ev_embed_sweep (EV_P_ ev_embed *w) 4729ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
2992{ 4730{
2993 ev_loop (w->other, EVLOOP_NONBLOCK); 4731 ev_run (w->other, EVRUN_NOWAIT);
2994} 4732}
2995 4733
2996static void 4734static void
2997embed_io_cb (EV_P_ ev_io *io, int revents) 4735embed_io_cb (EV_P_ ev_io *io, int revents)
2998{ 4736{
2999 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4737 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3000 4738
3001 if (ev_cb (w)) 4739 if (ev_cb (w))
3002 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4740 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3003 else 4741 else
3004 ev_loop (w->other, EVLOOP_NONBLOCK); 4742 ev_run (w->other, EVRUN_NOWAIT);
3005} 4743}
3006 4744
3007static void 4745static void
3008embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4746embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3009{ 4747{
3010 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4748 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3011 4749
3012 { 4750 {
3013 struct ev_loop *loop = w->other; 4751 EV_P = w->other;
3014 4752
3015 while (fdchangecnt) 4753 while (fdchangecnt)
3016 { 4754 {
3017 fd_reify (EV_A); 4755 fd_reify (EV_A);
3018 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4756 ev_run (EV_A_ EVRUN_NOWAIT);
3019 } 4757 }
3020 } 4758 }
3021} 4759}
3022 4760
3023static void 4761static void
… …
3026 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4764 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3027 4765
3028 ev_embed_stop (EV_A_ w); 4766 ev_embed_stop (EV_A_ w);
3029 4767
3030 { 4768 {
3031 struct ev_loop *loop = w->other; 4769 EV_P = w->other;
3032 4770
3033 ev_loop_fork (EV_A); 4771 ev_loop_fork (EV_A);
3034 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4772 ev_run (EV_A_ EVRUN_NOWAIT);
3035 } 4773 }
3036 4774
3037 ev_embed_start (EV_A_ w); 4775 ev_embed_start (EV_A_ w);
3038} 4776}
3039 4777
… …
3044 ev_idle_stop (EV_A_ idle); 4782 ev_idle_stop (EV_A_ idle);
3045} 4783}
3046#endif 4784#endif
3047 4785
3048void 4786void
3049ev_embed_start (EV_P_ ev_embed *w) 4787ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3050{ 4788{
3051 if (expect_false (ev_is_active (w))) 4789 if (expect_false (ev_is_active (w)))
3052 return; 4790 return;
3053 4791
3054 { 4792 {
3055 struct ev_loop *loop = w->other; 4793 EV_P = w->other;
3056 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4794 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3057 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4795 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3058 } 4796 }
3059 4797
3060 EV_FREQUENT_CHECK; 4798 EV_FREQUENT_CHECK;
… …
3075 4813
3076 EV_FREQUENT_CHECK; 4814 EV_FREQUENT_CHECK;
3077} 4815}
3078 4816
3079void 4817void
3080ev_embed_stop (EV_P_ ev_embed *w) 4818ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3081{ 4819{
3082 clear_pending (EV_A_ (W)w); 4820 clear_pending (EV_A_ (W)w);
3083 if (expect_false (!ev_is_active (w))) 4821 if (expect_false (!ev_is_active (w)))
3084 return; 4822 return;
3085 4823
… …
3087 4825
3088 ev_io_stop (EV_A_ &w->io); 4826 ev_io_stop (EV_A_ &w->io);
3089 ev_prepare_stop (EV_A_ &w->prepare); 4827 ev_prepare_stop (EV_A_ &w->prepare);
3090 ev_fork_stop (EV_A_ &w->fork); 4828 ev_fork_stop (EV_A_ &w->fork);
3091 4829
4830 ev_stop (EV_A_ (W)w);
4831
3092 EV_FREQUENT_CHECK; 4832 EV_FREQUENT_CHECK;
3093} 4833}
3094#endif 4834#endif
3095 4835
3096#if EV_FORK_ENABLE 4836#if EV_FORK_ENABLE
3097void 4837void
3098ev_fork_start (EV_P_ ev_fork *w) 4838ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3099{ 4839{
3100 if (expect_false (ev_is_active (w))) 4840 if (expect_false (ev_is_active (w)))
3101 return; 4841 return;
3102 4842
3103 EV_FREQUENT_CHECK; 4843 EV_FREQUENT_CHECK;
… …
3108 4848
3109 EV_FREQUENT_CHECK; 4849 EV_FREQUENT_CHECK;
3110} 4850}
3111 4851
3112void 4852void
3113ev_fork_stop (EV_P_ ev_fork *w) 4853ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3114{ 4854{
3115 clear_pending (EV_A_ (W)w); 4855 clear_pending (EV_A_ (W)w);
3116 if (expect_false (!ev_is_active (w))) 4856 if (expect_false (!ev_is_active (w)))
3117 return; 4857 return;
3118 4858
… …
3129 4869
3130 EV_FREQUENT_CHECK; 4870 EV_FREQUENT_CHECK;
3131} 4871}
3132#endif 4872#endif
3133 4873
3134#if EV_ASYNC_ENABLE 4874#if EV_CLEANUP_ENABLE
3135void 4875void
3136ev_async_start (EV_P_ ev_async *w) 4876ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3137{ 4877{
3138 if (expect_false (ev_is_active (w))) 4878 if (expect_false (ev_is_active (w)))
3139 return; 4879 return;
4880
4881 EV_FREQUENT_CHECK;
4882
4883 ev_start (EV_A_ (W)w, ++cleanupcnt);
4884 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4885 cleanups [cleanupcnt - 1] = w;
4886
4887 /* cleanup watchers should never keep a refcount on the loop */
4888 ev_unref (EV_A);
4889 EV_FREQUENT_CHECK;
4890}
4891
4892void
4893ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4894{
4895 clear_pending (EV_A_ (W)w);
4896 if (expect_false (!ev_is_active (w)))
4897 return;
4898
4899 EV_FREQUENT_CHECK;
4900 ev_ref (EV_A);
4901
4902 {
4903 int active = ev_active (w);
4904
4905 cleanups [active - 1] = cleanups [--cleanupcnt];
4906 ev_active (cleanups [active - 1]) = active;
4907 }
4908
4909 ev_stop (EV_A_ (W)w);
4910
4911 EV_FREQUENT_CHECK;
4912}
4913#endif
4914
4915#if EV_ASYNC_ENABLE
4916void
4917ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4918{
4919 if (expect_false (ev_is_active (w)))
4920 return;
4921
4922 w->sent = 0;
3140 4923
3141 evpipe_init (EV_A); 4924 evpipe_init (EV_A);
3142 4925
3143 EV_FREQUENT_CHECK; 4926 EV_FREQUENT_CHECK;
3144 4927
… …
3148 4931
3149 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
3150} 4933}
3151 4934
3152void 4935void
3153ev_async_stop (EV_P_ ev_async *w) 4936ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3154{ 4937{
3155 clear_pending (EV_A_ (W)w); 4938 clear_pending (EV_A_ (W)w);
3156 if (expect_false (!ev_is_active (w))) 4939 if (expect_false (!ev_is_active (w)))
3157 return; 4940 return;
3158 4941
… …
3169 4952
3170 EV_FREQUENT_CHECK; 4953 EV_FREQUENT_CHECK;
3171} 4954}
3172 4955
3173void 4956void
3174ev_async_send (EV_P_ ev_async *w) 4957ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3175{ 4958{
3176 w->sent = 1; 4959 w->sent = 1;
3177 evpipe_write (EV_A_ &gotasync); 4960 evpipe_write (EV_A_ &async_pending);
3178} 4961}
3179#endif 4962#endif
3180 4963
3181/*****************************************************************************/ 4964/*****************************************************************************/
3182 4965
… …
3216 4999
3217 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5000 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3218} 5001}
3219 5002
3220void 5003void
3221ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5004ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3222{ 5005{
3223 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5006 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3224
3225 if (expect_false (!once))
3226 {
3227 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3228 return;
3229 }
3230 5007
3231 once->cb = cb; 5008 once->cb = cb;
3232 once->arg = arg; 5009 once->arg = arg;
3233 5010
3234 ev_init (&once->io, once_cb_io); 5011 ev_init (&once->io, once_cb_io);
… …
3247} 5024}
3248 5025
3249/*****************************************************************************/ 5026/*****************************************************************************/
3250 5027
3251#if EV_WALK_ENABLE 5028#if EV_WALK_ENABLE
5029ecb_cold
3252void 5030void
3253ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5031ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3254{ 5032{
3255 int i, j; 5033 int i, j;
3256 ev_watcher_list *wl, *wn; 5034 ev_watcher_list *wl, *wn;
3257 5035
3258 if (types & (EV_IO | EV_EMBED)) 5036 if (types & (EV_IO | EV_EMBED))
… …
3301 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5079 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3302#endif 5080#endif
3303 5081
3304#if EV_IDLE_ENABLE 5082#if EV_IDLE_ENABLE
3305 if (types & EV_IDLE) 5083 if (types & EV_IDLE)
3306 for (j = NUMPRI; i--; ) 5084 for (j = NUMPRI; j--; )
3307 for (i = idlecnt [j]; i--; ) 5085 for (i = idlecnt [j]; i--; )
3308 cb (EV_A_ EV_IDLE, idles [j][i]); 5086 cb (EV_A_ EV_IDLE, idles [j][i]);
3309#endif 5087#endif
3310 5088
3311#if EV_FORK_ENABLE 5089#if EV_FORK_ENABLE
… …
3319 if (types & EV_ASYNC) 5097 if (types & EV_ASYNC)
3320 for (i = asynccnt; i--; ) 5098 for (i = asynccnt; i--; )
3321 cb (EV_A_ EV_ASYNC, asyncs [i]); 5099 cb (EV_A_ EV_ASYNC, asyncs [i]);
3322#endif 5100#endif
3323 5101
5102#if EV_PREPARE_ENABLE
3324 if (types & EV_PREPARE) 5103 if (types & EV_PREPARE)
3325 for (i = preparecnt; i--; ) 5104 for (i = preparecnt; i--; )
3326#if EV_EMBED_ENABLE 5105# if EV_EMBED_ENABLE
3327 if (ev_cb (prepares [i]) != embed_prepare_cb) 5106 if (ev_cb (prepares [i]) != embed_prepare_cb)
3328#endif 5107# endif
3329 cb (EV_A_ EV_PREPARE, prepares [i]); 5108 cb (EV_A_ EV_PREPARE, prepares [i]);
5109#endif
3330 5110
5111#if EV_CHECK_ENABLE
3331 if (types & EV_CHECK) 5112 if (types & EV_CHECK)
3332 for (i = checkcnt; i--; ) 5113 for (i = checkcnt; i--; )
3333 cb (EV_A_ EV_CHECK, checks [i]); 5114 cb (EV_A_ EV_CHECK, checks [i]);
5115#endif
3334 5116
5117#if EV_SIGNAL_ENABLE
3335 if (types & EV_SIGNAL) 5118 if (types & EV_SIGNAL)
3336 for (i = 0; i < signalmax; ++i) 5119 for (i = 0; i < EV_NSIG - 1; ++i)
3337 for (wl = signals [i].head; wl; ) 5120 for (wl = signals [i].head; wl; )
3338 { 5121 {
3339 wn = wl->next; 5122 wn = wl->next;
3340 cb (EV_A_ EV_SIGNAL, wl); 5123 cb (EV_A_ EV_SIGNAL, wl);
3341 wl = wn; 5124 wl = wn;
3342 } 5125 }
5126#endif
3343 5127
5128#if EV_CHILD_ENABLE
3344 if (types & EV_CHILD) 5129 if (types & EV_CHILD)
3345 for (i = EV_PID_HASHSIZE; i--; ) 5130 for (i = (EV_PID_HASHSIZE); i--; )
3346 for (wl = childs [i]; wl; ) 5131 for (wl = childs [i]; wl; )
3347 { 5132 {
3348 wn = wl->next; 5133 wn = wl->next;
3349 cb (EV_A_ EV_CHILD, wl); 5134 cb (EV_A_ EV_CHILD, wl);
3350 wl = wn; 5135 wl = wn;
3351 } 5136 }
5137#endif
3352/* EV_STAT 0x00001000 /* stat data changed */ 5138/* EV_STAT 0x00001000 /* stat data changed */
3353/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5139/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3354} 5140}
3355#endif 5141#endif
3356 5142
3357#if EV_MULTIPLICITY 5143#if EV_MULTIPLICITY
3358 #include "ev_wrap.h" 5144 #include "ev_wrap.h"
3359#endif 5145#endif
3360 5146
3361#ifdef __cplusplus
3362}
3363#endif
3364

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