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Comparing libev/ev.c (file contents):
Revision 1.330 by root, Tue Mar 9 08:46:17 2010 UTC vs.
Revision 1.500 by root, Mon Jul 1 20:47:37 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 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
114# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 121# ifndef EV_USE_LINUXAIO
116# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
123# if HAVE_PORT_H && HAVE_PORT_CREATE 130# ifndef EV_USE_KQUEUE
124# define EV_USE_PORT 1 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_KQUEUE
135# define EV_USE_KQUEUE 0
128# endif 136# endif
129 137
138# if HAVE_PORT_H && HAVE_PORT_CREATE
130# ifndef EV_USE_INOTIFY 139# ifndef EV_USE_PORT
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 140# define EV_USE_PORT EV_FEATURE_BACKENDS
132# define EV_USE_INOTIFY 1
133# else
134# define EV_USE_INOTIFY 0
135# endif 141# endif
142# else
143# undef EV_USE_PORT
144# define EV_USE_PORT 0
136# endif 145# endif
137 146
147# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
138# ifndef EV_USE_SIGNALFD 148# ifndef EV_USE_INOTIFY
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 149# define EV_USE_INOTIFY EV_FEATURE_OS
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif 150# endif
151# else
152# undef EV_USE_INOTIFY
153# define EV_USE_INOTIFY 0
144# endif 154# endif
145 155
156# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_SIGNALFD
147# if HAVE_EVENTFD 158# define EV_USE_SIGNALFD EV_FEATURE_OS
148# define EV_USE_EVENTFD 1
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_SIGNALFD
162# define EV_USE_SIGNALFD 0
163# endif
164
165# if HAVE_EVENTFD
166# ifndef EV_USE_EVENTFD
167# define EV_USE_EVENTFD EV_FEATURE_OS
168# endif
169# else
170# undef EV_USE_EVENTFD
171# define EV_USE_EVENTFD 0
152# endif 172# endif
153 173
154#endif 174#endif
155 175
156#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
157#include <stdlib.h> 186#include <stdlib.h>
158#include <string.h> 187#include <string.h>
159#include <fcntl.h> 188#include <fcntl.h>
160#include <stddef.h> 189#include <stddef.h>
161 190
… …
173# include EV_H 202# include EV_H
174#else 203#else
175# include "ev.h" 204# include "ev.h"
176#endif 205#endif
177 206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
216#endif
217
178#ifndef _WIN32 218#ifndef _WIN32
179# include <sys/time.h> 219# include <sys/time.h>
180# include <sys/wait.h> 220# include <sys/wait.h>
181# include <unistd.h> 221# include <unistd.h>
182#else 222#else
183# include <io.h> 223# include <io.h>
184# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
185# include <windows.h> 226# include <windows.h>
186# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
188# endif 229# endif
230# undef EV_AVOID_STDIO
189#endif 231#endif
190 232
191/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
192 234
193/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
194#if defined (EV_NSIG) 236#if defined EV_NSIG
195/* use what's provided */ 237/* use what's provided */
196#elif defined (NSIG) 238#elif defined NSIG
197# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
198#elif defined(_NSIG) 240#elif defined _NSIG
199# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
200#elif defined (SIGMAX) 242#elif defined SIGMAX
201# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
202#elif defined (SIG_MAX) 244#elif defined SIG_MAX
203# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
204#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
205# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
206#elif defined (MAXSIG) 248#elif defined MAXSIG
207# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
208#elif defined (MAX_SIG) 250#elif defined MAX_SIG
209# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
210#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
211# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
212#elif defined (_sys_nsig) 254#elif defined _sys_nsig
213# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
214#else 256#else
215# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
216/* to make it compile regardless, just remove the above line */ 258#endif
217# define EV_NSIG 65 259
260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
218#endif 262#endif
219 263
220#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
221# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
222# define EV_USE_CLOCK_SYSCALL 1 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
223# else 267# else
224# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
225# endif 269# endif
226#endif 270#endif
227 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
228#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
229# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
230# define EV_USE_MONOTONIC 1 283# define EV_USE_MONOTONIC EV_FEATURE_OS
231# else 284# else
232# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
233# endif 286# endif
234#endif 287#endif
235 288
… …
237# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
238#endif 291#endif
239 292
240#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
241# if _POSIX_C_SOURCE >= 199309L 294# if _POSIX_C_SOURCE >= 199309L
242# define EV_USE_NANOSLEEP 1 295# define EV_USE_NANOSLEEP EV_FEATURE_OS
243# else 296# else
244# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
245# endif 298# endif
246#endif 299#endif
247 300
248#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
249# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
250#endif 303#endif
251 304
252#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
253# ifdef _WIN32 306# ifdef _WIN32
254# define EV_USE_POLL 0 307# define EV_USE_POLL 0
255# else 308# else
256# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
257# endif 310# endif
258#endif 311#endif
259 312
260#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
261# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
262# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
263# else 316# else
264# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
265# endif 318# endif
266#endif 319#endif
267 320
… …
271 324
272#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
273# define EV_USE_PORT 0 326# define EV_USE_PORT 0
274#endif 327#endif
275 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
276#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
277# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
278# define EV_USE_INOTIFY 1 339# define EV_USE_INOTIFY EV_FEATURE_OS
279# else 340# else
280# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
281# endif 342# endif
282#endif 343#endif
283 344
284#ifndef EV_PID_HASHSIZE 345#ifndef EV_PID_HASHSIZE
285# if EV_MINIMAL 346# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
286# define EV_PID_HASHSIZE 1
287# else
288# define EV_PID_HASHSIZE 16
289# endif
290#endif 347#endif
291 348
292#ifndef EV_INOTIFY_HASHSIZE 349#ifndef EV_INOTIFY_HASHSIZE
293# if EV_MINIMAL 350# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
294# define EV_INOTIFY_HASHSIZE 1
295# else
296# define EV_INOTIFY_HASHSIZE 16
297# endif
298#endif 351#endif
299 352
300#ifndef EV_USE_EVENTFD 353#ifndef EV_USE_EVENTFD
301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 354# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
302# define EV_USE_EVENTFD 1 355# define EV_USE_EVENTFD EV_FEATURE_OS
303# else 356# else
304# define EV_USE_EVENTFD 0 357# define EV_USE_EVENTFD 0
305# endif 358# endif
306#endif 359#endif
307 360
308#ifndef EV_USE_SIGNALFD 361#ifndef EV_USE_SIGNALFD
309# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
310# define EV_USE_SIGNALFD 1 363# define EV_USE_SIGNALFD EV_FEATURE_OS
311# else 364# else
312# define EV_USE_SIGNALFD 0 365# define EV_USE_SIGNALFD 0
313# endif 366# endif
314#endif 367#endif
315 368
… …
318# define EV_USE_4HEAP 1 371# define EV_USE_4HEAP 1
319# define EV_HEAP_CACHE_AT 1 372# define EV_HEAP_CACHE_AT 1
320#endif 373#endif
321 374
322#ifndef EV_VERIFY 375#ifndef EV_VERIFY
323# define EV_VERIFY !EV_MINIMAL 376# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
324#endif 377#endif
325 378
326#ifndef EV_USE_4HEAP 379#ifndef EV_USE_4HEAP
327# define EV_USE_4HEAP !EV_MINIMAL 380# define EV_USE_4HEAP EV_FEATURE_DATA
328#endif 381#endif
329 382
330#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
331# define EV_HEAP_CACHE_AT !EV_MINIMAL 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
385#endif
386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
332#endif 401#endif
333 402
334/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
335/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
336#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
337# include <syscall.h> 406# include <sys/syscall.h>
338# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
339# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
340# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
341# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
342# else 411# else
… …
345# endif 414# endif
346#endif 415#endif
347 416
348/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 417/* this block fixes any misconfiguration where we know we run into trouble otherwise */
349 418
350#ifdef _AIX
351/* AIX has a completely broken poll.h header */
352# undef EV_USE_POLL
353# define EV_USE_POLL 0
354#endif
355
356#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
357# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
358# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
359#endif 422#endif
360 423
… …
367# undef EV_USE_INOTIFY 430# undef EV_USE_INOTIFY
368# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
369#endif 432#endif
370 433
371#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
372# ifndef _WIN32 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
436# if !defined _WIN32 && !defined __hpux
373# include <sys/select.h> 437# include <sys/select.h>
374# endif 438# endif
375#endif 439#endif
376 440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
446# endif
447#endif
448
377#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
378# include <sys/utsname.h>
379# include <sys/statfs.h> 450# include <sys/statfs.h>
380# include <sys/inotify.h> 451# include <sys/inotify.h>
381/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 452/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
382# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
383# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
384# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
385# endif 456# endif
386#endif
387
388#if EV_SELECT_IS_WINSOCKET
389# include <winsock.h>
390#endif 457#endif
391 458
392#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
393/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 460/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
394# include <stdint.h> 461# include <stdint.h>
… …
400# define EFD_CLOEXEC O_CLOEXEC 467# define EFD_CLOEXEC O_CLOEXEC
401# else 468# else
402# define EFD_CLOEXEC 02000000 469# define EFD_CLOEXEC 02000000
403# endif 470# endif
404# endif 471# endif
405# ifdef __cplusplus
406extern "C" {
407# endif
408int (eventfd) (unsigned int initval, int flags); 472EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
409# ifdef __cplusplus
410}
411# endif
412#endif 473#endif
413 474
414#if EV_USE_SIGNALFD 475#if EV_USE_SIGNALFD
415/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 476/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
416# include <stdint.h> 477# include <stdint.h>
… …
422# define SFD_CLOEXEC O_CLOEXEC 483# define SFD_CLOEXEC O_CLOEXEC
423# else 484# else
424# define SFD_CLOEXEC 02000000 485# define SFD_CLOEXEC 02000000
425# endif 486# endif
426# endif 487# endif
427# ifdef __cplusplus
428extern "C" {
429# endif
430int signalfd (int fd, const sigset_t *mask, int flags); 488EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
431 489
432struct signalfd_siginfo 490struct signalfd_siginfo
433{ 491{
434 uint32_t ssi_signo; 492 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)]; 493 char pad[128 - sizeof (uint32_t)];
436}; 494};
437# ifdef __cplusplus
438}
439# endif 495#endif
440#endif
441
442 496
443/**/ 497/**/
444 498
445#if EV_VERIFY >= 3 499#if EV_VERIFY >= 3
446# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 500# define EV_FREQUENT_CHECK ev_verify (EV_A)
447#else 501#else
448# define EV_FREQUENT_CHECK do { } while (0) 502# define EV_FREQUENT_CHECK do { } while (0)
449#endif 503#endif
450 504
451/* 505/*
452 * This is used to avoid floating point rounding problems. 506 * This is used to work around floating point rounding problems.
453 * It is added to ev_rt_now when scheduling periodics
454 * to ensure progress, time-wise, even when rounding
455 * errors are against us.
456 * This value is good at least till the year 4000. 507 * This value is good at least till the year 4000.
457 * Better solutions welcome.
458 */ 508 */
459#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 509#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
510/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
460 511
461#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 512#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
462#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 513#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
463 514
515#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
516#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
517
518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
519/* ECB.H BEGIN */
520/*
521 * libecb - http://software.schmorp.de/pkg/libecb
522 *
523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
524 * Copyright (©) 2011 Emanuele Giaquinta
525 * All rights reserved.
526 *
527 * Redistribution and use in source and binary forms, with or without modifica-
528 * tion, are permitted provided that the following conditions are met:
529 *
530 * 1. Redistributions of source code must retain the above copyright notice,
531 * this list of conditions and the following disclaimer.
532 *
533 * 2. Redistributions in binary form must reproduce the above copyright
534 * notice, this list of conditions and the following disclaimer in the
535 * documentation and/or other materials provided with the distribution.
536 *
537 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
538 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
539 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
540 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
541 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
558 */
559
560#ifndef ECB_H
561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010006
565
566#ifdef _WIN32
567 typedef signed char int8_t;
568 typedef unsigned char uint8_t;
569 typedef signed short int16_t;
570 typedef unsigned short uint16_t;
571 typedef signed int int32_t;
572 typedef unsigned int uint32_t;
464#if __GNUC__ >= 4 573 #if __GNUC__
574 typedef signed long long int64_t;
575 typedef unsigned long long uint64_t;
576 #else /* _MSC_VER || __BORLANDC__ */
577 typedef signed __int64 int64_t;
578 typedef unsigned __int64 uint64_t;
579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
589#else
590 #include <inttypes.h>
591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
592 #define ECB_PTRSIZE 8
593 #else
594 #define ECB_PTRSIZE 4
595 #endif
596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
607 #endif
608#endif
609
610/* many compilers define _GNUC_ to some versions but then only implement
611 * what their idiot authors think are the "more important" extensions,
612 * causing enormous grief in return for some better fake benchmark numbers.
613 * or so.
614 * we try to detect these and simply assume they are not gcc - if they have
615 * an issue with that they should have done it right in the first place.
616 */
617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
618 #define ECB_GCC_VERSION(major,minor) 0
619#else
620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
662#endif
663
664/*****************************************************************************/
665
666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
668
669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
674 #define ECB_MEMORY_FENCE do { } while (0)
675#endif
676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
688 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
689 #if __i386 || __i386__
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
693 #elif ECB_GCC_AMD64
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
696 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
699 #elif defined __ARM_ARCH_2__ \
700 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
701 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
702 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
703 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
704 || defined __ARM_ARCH_5TEJ__
705 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
718 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
719 #elif defined __s390__ || defined __s390x__
720 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
721 #elif defined __mips__
722 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
723 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
724 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
725 #elif defined __alpha__
726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
727 #elif defined __hppa__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
729 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
730 #elif defined __ia64__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
732 #elif defined __m68k__
733 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
734 #elif defined __m88k__
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
736 #elif defined __sh__
737 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
738 #endif
739 #endif
740#endif
741
742#ifndef ECB_MEMORY_FENCE
743 #if ECB_GCC_VERSION(4,7)
744 /* see comment below (stdatomic.h) about the C11 memory model. */
745 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
746 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
747 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
748 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
749
750 #elif ECB_CLANG_EXTENSION(c_atomic)
751 /* see comment below (stdatomic.h) about the C11 memory model. */
752 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
753 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
754 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
755 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
756
757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
758 #define ECB_MEMORY_FENCE __sync_synchronize ()
759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
760 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
761 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
762 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
763 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
764 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
768 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
770 #elif defined _WIN32
771 #include <WinNT.h>
772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
774 #include <mbarrier.h>
775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
777 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
778 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
779 #elif __xlC__
780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
790 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
791 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
792 #endif
793#endif
794
795#ifndef ECB_MEMORY_FENCE
796 #if !ECB_AVOID_PTHREADS
797 /*
798 * if you get undefined symbol references to pthread_mutex_lock,
799 * or failure to find pthread.h, then you should implement
800 * the ECB_MEMORY_FENCE operations for your cpu/compiler
801 * OR provide pthread.h and link against the posix thread library
802 * of your system.
803 */
804 #include <pthread.h>
805 #define ECB_NEEDS_PTHREADS 1
806 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
807
808 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
809 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
810 #endif
811#endif
812
813#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
814 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
815#endif
816
817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
819#endif
820
821#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
822 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
823#endif
824
825/*****************************************************************************/
826
827#if ECB_CPP
828 #define ecb_inline static inline
829#elif ECB_GCC_VERSION(2,5)
830 #define ecb_inline static __inline__
831#elif ECB_C99
832 #define ecb_inline static inline
833#else
834 #define ecb_inline static
835#endif
836
837#if ECB_GCC_VERSION(3,3)
838 #define ecb_restrict __restrict__
839#elif ECB_C99
840 #define ecb_restrict restrict
841#else
842 #define ecb_restrict
843#endif
844
845typedef int ecb_bool;
846
847#define ECB_CONCAT_(a, b) a ## b
848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
849#define ECB_STRINGIFY_(a) # a
850#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
851#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
852
853#define ecb_function_ ecb_inline
854
855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
856 #define ecb_attribute(attrlist) __attribute__ (attrlist)
857#else
858 #define ecb_attribute(attrlist)
859#endif
860
861#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
862 #define ecb_is_constant(expr) __builtin_constant_p (expr)
863#else
864 /* possible C11 impl for integral types
865 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
866 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
867
868 #define ecb_is_constant(expr) 0
869#endif
870
871#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
465# define expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
466# define noinline __attribute__ ((noinline))
467#else 873#else
468# define expect(expr,value) (expr) 874 #define ecb_expect(expr,value) (expr)
469# define noinline
470# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
471# define inline
472# endif 875#endif
473#endif
474 876
877#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
879#else
880 #define ecb_prefetch(addr,rw,locality)
881#endif
882
883/* no emulation for ecb_decltype */
884#if ECB_CPP11
885 // older implementations might have problems with decltype(x)::type, work around it
886 template<class T> struct ecb_decltype_t { typedef T type; };
887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
889 #define ecb_decltype(x) __typeof__ (x)
890#endif
891
892#if _MSC_VER >= 1300
893 #define ecb_deprecated __declspec (deprecated)
894#else
895 #define ecb_deprecated ecb_attribute ((__deprecated__))
896#endif
897
898#if _MSC_VER >= 1500
899 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
900#elif ECB_GCC_VERSION(4,5)
901 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
902#else
903 #define ecb_deprecated_message(msg) ecb_deprecated
904#endif
905
906#if _MSC_VER >= 1400
907 #define ecb_noinline __declspec (noinline)
908#else
909 #define ecb_noinline ecb_attribute ((__noinline__))
910#endif
911
912#define ecb_unused ecb_attribute ((__unused__))
913#define ecb_const ecb_attribute ((__const__))
914#define ecb_pure ecb_attribute ((__pure__))
915
916#if ECB_C11 || __IBMC_NORETURN
917 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
918 #define ecb_noreturn _Noreturn
919#elif ECB_CPP11
920 #define ecb_noreturn [[noreturn]]
921#elif _MSC_VER >= 1200
922 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
923 #define ecb_noreturn __declspec (noreturn)
924#else
925 #define ecb_noreturn ecb_attribute ((__noreturn__))
926#endif
927
928#if ECB_GCC_VERSION(4,3)
929 #define ecb_artificial ecb_attribute ((__artificial__))
930 #define ecb_hot ecb_attribute ((__hot__))
931 #define ecb_cold ecb_attribute ((__cold__))
932#else
933 #define ecb_artificial
934 #define ecb_hot
935 #define ecb_cold
936#endif
937
938/* put around conditional expressions if you are very sure that the */
939/* expression is mostly true or mostly false. note that these return */
940/* booleans, not the expression. */
475#define expect_false(expr) expect ((expr) != 0, 0) 941#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
476#define expect_true(expr) expect ((expr) != 0, 1) 942#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
943/* for compatibility to the rest of the world */
944#define ecb_likely(expr) ecb_expect_true (expr)
945#define ecb_unlikely(expr) ecb_expect_false (expr)
946
947/* count trailing zero bits and count # of one bits */
948#if ECB_GCC_VERSION(3,4) \
949 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
950 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
951 && ECB_CLANG_BUILTIN(__builtin_popcount))
952 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
955 #define ecb_ctz32(x) __builtin_ctz (x)
956 #define ecb_ctz64(x) __builtin_ctzll (x)
957 #define ecb_popcount32(x) __builtin_popcount (x)
958 /* no popcountll */
959#else
960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
961 ecb_function_ ecb_const int
962 ecb_ctz32 (uint32_t x)
963 {
964#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
965 unsigned long r;
966 _BitScanForward (&r, x);
967 return (int)r;
968#else
969 int r = 0;
970
971 x &= ~x + 1; /* this isolates the lowest bit */
972
973#if ECB_branchless_on_i386
974 r += !!(x & 0xaaaaaaaa) << 0;
975 r += !!(x & 0xcccccccc) << 1;
976 r += !!(x & 0xf0f0f0f0) << 2;
977 r += !!(x & 0xff00ff00) << 3;
978 r += !!(x & 0xffff0000) << 4;
979#else
980 if (x & 0xaaaaaaaa) r += 1;
981 if (x & 0xcccccccc) r += 2;
982 if (x & 0xf0f0f0f0) r += 4;
983 if (x & 0xff00ff00) r += 8;
984 if (x & 0xffff0000) r += 16;
985#endif
986
987 return r;
988#endif
989 }
990
991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
992 ecb_function_ ecb_const int
993 ecb_ctz64 (uint64_t x)
994 {
995#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
996 unsigned long r;
997 _BitScanForward64 (&r, x);
998 return (int)r;
999#else
1000 int shift = x & 0xffffffff ? 0 : 32;
1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
1003 }
1004
1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1006 ecb_function_ ecb_const int
1007 ecb_popcount32 (uint32_t x)
1008 {
1009 x -= (x >> 1) & 0x55555555;
1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
1012 x *= 0x01010101;
1013
1014 return x >> 24;
1015 }
1016
1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1019 {
1020#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1021 unsigned long r;
1022 _BitScanReverse (&r, x);
1023 return (int)r;
1024#else
1025 int r = 0;
1026
1027 if (x >> 16) { x >>= 16; r += 16; }
1028 if (x >> 8) { x >>= 8; r += 8; }
1029 if (x >> 4) { x >>= 4; r += 4; }
1030 if (x >> 2) { x >>= 2; r += 2; }
1031 if (x >> 1) { r += 1; }
1032
1033 return r;
1034#endif
1035 }
1036
1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1039 {
1040#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1041 unsigned long r;
1042 _BitScanReverse64 (&r, x);
1043 return (int)r;
1044#else
1045 int r = 0;
1046
1047 if (x >> 32) { x >>= 32; r += 32; }
1048
1049 return r + ecb_ld32 (x);
1050#endif
1051 }
1052#endif
1053
1054ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1056ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1058
1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1061{
1062 return ( (x * 0x0802U & 0x22110U)
1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1064}
1065
1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1068{
1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1072 x = ( x >> 8 ) | ( x << 8);
1073
1074 return x;
1075}
1076
1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1079{
1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1084 x = ( x >> 16 ) | ( x << 16);
1085
1086 return x;
1087}
1088
1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
1090/* so for this version we are lazy */
1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1092ecb_function_ ecb_const int
1093ecb_popcount64 (uint64_t x)
1094{
1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1096}
1097
1098ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1099ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1100ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1101ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1102ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1103ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1104ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1105ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1106
1107ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1108ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1109ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1110ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1111ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1112ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1113ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1114ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1115
1116#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1117 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1118 #define ecb_bswap16(x) __builtin_bswap16 (x)
1119 #else
1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
1123 #define ecb_bswap64(x) __builtin_bswap64 (x)
1124#elif _MSC_VER
1125 #include <stdlib.h>
1126 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1127 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1128 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1129#else
1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1131 ecb_function_ ecb_const uint16_t
1132 ecb_bswap16 (uint16_t x)
1133 {
1134 return ecb_rotl16 (x, 8);
1135 }
1136
1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1138 ecb_function_ ecb_const uint32_t
1139 ecb_bswap32 (uint32_t x)
1140 {
1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1142 }
1143
1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1145 ecb_function_ ecb_const uint64_t
1146 ecb_bswap64 (uint64_t x)
1147 {
1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1149 }
1150#endif
1151
1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1153 #define ecb_unreachable() __builtin_unreachable ()
1154#else
1155 /* this seems to work fine, but gcc always emits a warning for it :/ */
1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1158#endif
1159
1160/* try to tell the compiler that some condition is definitely true */
1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1162
1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1164ecb_inline ecb_const uint32_t
1165ecb_byteorder_helper (void)
1166{
1167 /* the union code still generates code under pressure in gcc, */
1168 /* but less than using pointers, and always seems to */
1169 /* successfully return a constant. */
1170 /* the reason why we have this horrible preprocessor mess */
1171 /* is to avoid it in all cases, at least on common architectures */
1172 /* or when using a recent enough gcc version (>= 4.6) */
1173#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1174 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1175 #define ECB_LITTLE_ENDIAN 1
1176 return 0x44332211;
1177#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1178 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1179 #define ECB_BIG_ENDIAN 1
1180 return 0x11223344;
1181#else
1182 union
1183 {
1184 uint8_t c[4];
1185 uint32_t u;
1186 } u = { 0x11, 0x22, 0x33, 0x44 };
1187 return u.u;
1188#endif
1189}
1190
1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1195
1196#if ECB_GCC_VERSION(3,0) || ECB_C99
1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1198#else
1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1200#endif
1201
1202#if ECB_CPP
1203 template<typename T>
1204 static inline T ecb_div_rd (T val, T div)
1205 {
1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1207 }
1208 template<typename T>
1209 static inline T ecb_div_ru (T val, T div)
1210 {
1211 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1212 }
1213#else
1214 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1215 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1216#endif
1217
1218#if ecb_cplusplus_does_not_suck
1219 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1220 template<typename T, int N>
1221 static inline int ecb_array_length (const T (&arr)[N])
1222 {
1223 return N;
1224 }
1225#else
1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1227#endif
1228
1229ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1230ecb_function_ ecb_const uint32_t
1231ecb_binary16_to_binary32 (uint32_t x)
1232{
1233 unsigned int s = (x & 0x8000) << (31 - 15);
1234 int e = (x >> 10) & 0x001f;
1235 unsigned int m = x & 0x03ff;
1236
1237 if (ecb_expect_false (e == 31))
1238 /* infinity or NaN */
1239 e = 255 - (127 - 15);
1240 else if (ecb_expect_false (!e))
1241 {
1242 if (ecb_expect_true (!m))
1243 /* zero, handled by code below by forcing e to 0 */
1244 e = 0 - (127 - 15);
1245 else
1246 {
1247 /* subnormal, renormalise */
1248 unsigned int s = 10 - ecb_ld32 (m);
1249
1250 m = (m << s) & 0x3ff; /* mask implicit bit */
1251 e -= s - 1;
1252 }
1253 }
1254
1255 /* e and m now are normalised, or zero, (or inf or nan) */
1256 e += 127 - 15;
1257
1258 return s | (e << 23) | (m << (23 - 10));
1259}
1260
1261ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1262ecb_function_ ecb_const uint16_t
1263ecb_binary32_to_binary16 (uint32_t x)
1264{
1265 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1266 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1267 unsigned int m = x & 0x007fffff;
1268
1269 x &= 0x7fffffff;
1270
1271 /* if it's within range of binary16 normals, use fast path */
1272 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1273 {
1274 /* mantissa round-to-even */
1275 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1276
1277 /* handle overflow */
1278 if (ecb_expect_false (m >= 0x00800000))
1279 {
1280 m >>= 1;
1281 e += 1;
1282 }
1283
1284 return s | (e << 10) | (m >> (23 - 10));
1285 }
1286
1287 /* handle large numbers and infinity */
1288 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1289 return s | 0x7c00;
1290
1291 /* handle zero, subnormals and small numbers */
1292 if (ecb_expect_true (x < 0x38800000))
1293 {
1294 /* zero */
1295 if (ecb_expect_true (!x))
1296 return s;
1297
1298 /* handle subnormals */
1299
1300 /* too small, will be zero */
1301 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1302 return s;
1303
1304 m |= 0x00800000; /* make implicit bit explicit */
1305
1306 /* very tricky - we need to round to the nearest e (+10) bit value */
1307 {
1308 unsigned int bits = 14 - e;
1309 unsigned int half = (1 << (bits - 1)) - 1;
1310 unsigned int even = (m >> bits) & 1;
1311
1312 /* if this overflows, we will end up with a normalised number */
1313 m = (m + half + even) >> bits;
1314 }
1315
1316 return s | m;
1317 }
1318
1319 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1320 m >>= 13;
1321
1322 return s | 0x7c00 | m | !m;
1323}
1324
1325/*******************************************************************************/
1326/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1327
1328/* basically, everything uses "ieee pure-endian" floating point numbers */
1329/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1330#if 0 \
1331 || __i386 || __i386__ \
1332 || ECB_GCC_AMD64 \
1333 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1334 || defined __s390__ || defined __s390x__ \
1335 || defined __mips__ \
1336 || defined __alpha__ \
1337 || defined __hppa__ \
1338 || defined __ia64__ \
1339 || defined __m68k__ \
1340 || defined __m88k__ \
1341 || defined __sh__ \
1342 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1343 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1344 || defined __aarch64__
1345 #define ECB_STDFP 1
1346 #include <string.h> /* for memcpy */
1347#else
1348 #define ECB_STDFP 0
1349#endif
1350
1351#ifndef ECB_NO_LIBM
1352
1353 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1354
1355 /* only the oldest of old doesn't have this one. solaris. */
1356 #ifdef INFINITY
1357 #define ECB_INFINITY INFINITY
1358 #else
1359 #define ECB_INFINITY HUGE_VAL
1360 #endif
1361
1362 #ifdef NAN
1363 #define ECB_NAN NAN
1364 #else
1365 #define ECB_NAN ECB_INFINITY
1366 #endif
1367
1368 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1369 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1370 #define ecb_frexpf(x,e) frexpf ((x), (e))
1371 #else
1372 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1373 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1374 #endif
1375
1376 /* convert a float to ieee single/binary32 */
1377 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1378 ecb_function_ ecb_const uint32_t
1379 ecb_float_to_binary32 (float x)
1380 {
1381 uint32_t r;
1382
1383 #if ECB_STDFP
1384 memcpy (&r, &x, 4);
1385 #else
1386 /* slow emulation, works for anything but -0 */
1387 uint32_t m;
1388 int e;
1389
1390 if (x == 0e0f ) return 0x00000000U;
1391 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1392 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1393 if (x != x ) return 0x7fbfffffU;
1394
1395 m = ecb_frexpf (x, &e) * 0x1000000U;
1396
1397 r = m & 0x80000000U;
1398
1399 if (r)
1400 m = -m;
1401
1402 if (e <= -126)
1403 {
1404 m &= 0xffffffU;
1405 m >>= (-125 - e);
1406 e = -126;
1407 }
1408
1409 r |= (e + 126) << 23;
1410 r |= m & 0x7fffffU;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* converts an ieee single/binary32 to a float */
1417 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1418 ecb_function_ ecb_const float
1419 ecb_binary32_to_float (uint32_t x)
1420 {
1421 float r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 4);
1425 #else
1426 /* emulation, only works for normals and subnormals and +0 */
1427 int neg = x >> 31;
1428 int e = (x >> 23) & 0xffU;
1429
1430 x &= 0x7fffffU;
1431
1432 if (e)
1433 x |= 0x800000U;
1434 else
1435 e = 1;
1436
1437 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1438 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1439
1440 r = neg ? -r : r;
1441 #endif
1442
1443 return r;
1444 }
1445
1446 /* convert a double to ieee double/binary64 */
1447 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1448 ecb_function_ ecb_const uint64_t
1449 ecb_double_to_binary64 (double x)
1450 {
1451 uint64_t r;
1452
1453 #if ECB_STDFP
1454 memcpy (&r, &x, 8);
1455 #else
1456 /* slow emulation, works for anything but -0 */
1457 uint64_t m;
1458 int e;
1459
1460 if (x == 0e0 ) return 0x0000000000000000U;
1461 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1462 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1463 if (x != x ) return 0X7ff7ffffffffffffU;
1464
1465 m = frexp (x, &e) * 0x20000000000000U;
1466
1467 r = m & 0x8000000000000000;;
1468
1469 if (r)
1470 m = -m;
1471
1472 if (e <= -1022)
1473 {
1474 m &= 0x1fffffffffffffU;
1475 m >>= (-1021 - e);
1476 e = -1022;
1477 }
1478
1479 r |= ((uint64_t)(e + 1022)) << 52;
1480 r |= m & 0xfffffffffffffU;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* converts an ieee double/binary64 to a double */
1487 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1488 ecb_function_ ecb_const double
1489 ecb_binary64_to_double (uint64_t x)
1490 {
1491 double r;
1492
1493 #if ECB_STDFP
1494 memcpy (&r, &x, 8);
1495 #else
1496 /* emulation, only works for normals and subnormals and +0 */
1497 int neg = x >> 63;
1498 int e = (x >> 52) & 0x7ffU;
1499
1500 x &= 0xfffffffffffffU;
1501
1502 if (e)
1503 x |= 0x10000000000000U;
1504 else
1505 e = 1;
1506
1507 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1508 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1509
1510 r = neg ? -r : r;
1511 #endif
1512
1513 return r;
1514 }
1515
1516 /* convert a float to ieee half/binary16 */
1517 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1518 ecb_function_ ecb_const uint16_t
1519 ecb_float_to_binary16 (float x)
1520 {
1521 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1522 }
1523
1524 /* convert an ieee half/binary16 to float */
1525 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1526 ecb_function_ ecb_const float
1527 ecb_binary16_to_float (uint16_t x)
1528 {
1529 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1530 }
1531
1532#endif
1533
1534#endif
1535
1536/* ECB.H END */
1537
1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1539/* if your architecture doesn't need memory fences, e.g. because it is
1540 * single-cpu/core, or if you use libev in a project that doesn't use libev
1541 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1542 * libev, in which cases the memory fences become nops.
1543 * alternatively, you can remove this #error and link against libpthread,
1544 * which will then provide the memory fences.
1545 */
1546# error "memory fences not defined for your architecture, please report"
1547#endif
1548
1549#ifndef ECB_MEMORY_FENCE
1550# define ECB_MEMORY_FENCE do { } while (0)
1551# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1552# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1553#endif
1554
477#define inline_size static inline 1555#define inline_size ecb_inline
478 1556
479#if EV_MINIMAL 1557#if EV_FEATURE_CODE
480# define inline_speed static noinline
481#else
482# define inline_speed static inline 1558# define inline_speed ecb_inline
1559#else
1560# define inline_speed ecb_noinline static
483#endif 1561#endif
484 1562
485#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1563#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
486 1564
487#if EV_MINPRI == EV_MAXPRI 1565#if EV_MINPRI == EV_MAXPRI
488# define ABSPRI(w) (((W)w), 0) 1566# define ABSPRI(w) (((W)w), 0)
489#else 1567#else
490# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1568# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
491#endif 1569#endif
492 1570
493#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1571#define EMPTY /* required for microsofts broken pseudo-c compiler */
494#define EMPTY2(a,b) /* used to suppress some warnings */
495 1572
496typedef ev_watcher *W; 1573typedef ev_watcher *W;
497typedef ev_watcher_list *WL; 1574typedef ev_watcher_list *WL;
498typedef ev_watcher_time *WT; 1575typedef ev_watcher_time *WT;
499 1576
500#define ev_active(w) ((W)(w))->active 1577#define ev_active(w) ((W)(w))->active
501#define ev_at(w) ((WT)(w))->at 1578#define ev_at(w) ((WT)(w))->at
502 1579
503#if EV_USE_REALTIME 1580#if EV_USE_REALTIME
504/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1581/* sig_atomic_t is used to avoid per-thread variables or locking but still */
505/* giving it a reasonably high chance of working on typical architetcures */ 1582/* giving it a reasonably high chance of working on typical architectures */
506static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1583static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
507#endif 1584#endif
508 1585
509#if EV_USE_MONOTONIC 1586#if EV_USE_MONOTONIC
510static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1587static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
524# include "ev_win32.c" 1601# include "ev_win32.c"
525#endif 1602#endif
526 1603
527/*****************************************************************************/ 1604/*****************************************************************************/
528 1605
1606#if EV_USE_LINUXAIO
1607# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1608#endif
1609
1610/* define a suitable floor function (only used by periodics atm) */
1611
1612#if EV_USE_FLOOR
1613# include <math.h>
1614# define ev_floor(v) floor (v)
1615#else
1616
1617#include <float.h>
1618
1619/* a floor() replacement function, should be independent of ev_tstamp type */
1620ecb_noinline
1621static ev_tstamp
1622ev_floor (ev_tstamp v)
1623{
1624 /* the choice of shift factor is not terribly important */
1625#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1626 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1627#else
1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1629#endif
1630
1631 /* argument too large for an unsigned long? */
1632 if (ecb_expect_false (v >= shift))
1633 {
1634 ev_tstamp f;
1635
1636 if (v == v - 1.)
1637 return v; /* very large number */
1638
1639 f = shift * ev_floor (v * (1. / shift));
1640 return f + ev_floor (v - f);
1641 }
1642
1643 /* special treatment for negative args? */
1644 if (ecb_expect_false (v < 0.))
1645 {
1646 ev_tstamp f = -ev_floor (-v);
1647
1648 return f - (f == v ? 0 : 1);
1649 }
1650
1651 /* fits into an unsigned long */
1652 return (unsigned long)v;
1653}
1654
1655#endif
1656
1657/*****************************************************************************/
1658
1659#ifdef __linux
1660# include <sys/utsname.h>
1661#endif
1662
1663ecb_noinline ecb_cold
1664static unsigned int
1665ev_linux_version (void)
1666{
1667#ifdef __linux
1668 unsigned int v = 0;
1669 struct utsname buf;
1670 int i;
1671 char *p = buf.release;
1672
1673 if (uname (&buf))
1674 return 0;
1675
1676 for (i = 3+1; --i; )
1677 {
1678 unsigned int c = 0;
1679
1680 for (;;)
1681 {
1682 if (*p >= '0' && *p <= '9')
1683 c = c * 10 + *p++ - '0';
1684 else
1685 {
1686 p += *p == '.';
1687 break;
1688 }
1689 }
1690
1691 v = (v << 8) | c;
1692 }
1693
1694 return v;
1695#else
1696 return 0;
1697#endif
1698}
1699
1700/*****************************************************************************/
1701
1702#if EV_AVOID_STDIO
1703ecb_noinline ecb_cold
1704static void
1705ev_printerr (const char *msg)
1706{
1707 write (STDERR_FILENO, msg, strlen (msg));
1708}
1709#endif
1710
529static void (*syserr_cb)(const char *msg); 1711static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
530 1712
1713ecb_cold
531void 1714void
532ev_set_syserr_cb (void (*cb)(const char *msg)) 1715ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
533{ 1716{
534 syserr_cb = cb; 1717 syserr_cb = cb;
535} 1718}
536 1719
537static void noinline 1720ecb_noinline ecb_cold
1721static void
538ev_syserr (const char *msg) 1722ev_syserr (const char *msg)
539{ 1723{
540 if (!msg) 1724 if (!msg)
541 msg = "(libev) system error"; 1725 msg = "(libev) system error";
542 1726
543 if (syserr_cb) 1727 if (syserr_cb)
544 syserr_cb (msg); 1728 syserr_cb (msg);
545 else 1729 else
546 { 1730 {
547#if EV_AVOID_STDIO 1731#if EV_AVOID_STDIO
548 write (STDERR_FILENO, msg, strlen (msg)); 1732 ev_printerr (msg);
549 write (STDERR_FILENO, ": ", 2); 1733 ev_printerr (": ");
550 msg = strerror (errno); 1734 ev_printerr (strerror (errno));
551 write (STDERR_FILENO, msg, strlen (msg)); 1735 ev_printerr ("\n");
552 write (STDERR_FILENO, "\n", 1);
553#else 1736#else
554 perror (msg); 1737 perror (msg);
555#endif 1738#endif
556 abort (); 1739 abort ();
557 } 1740 }
558} 1741}
559 1742
560static void * 1743static void *
561ev_realloc_emul (void *ptr, long size) 1744ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
562{ 1745{
563 /* some systems, notably openbsd and darwin, fail to properly 1746 /* some systems, notably openbsd and darwin, fail to properly
564 * implement realloc (x, 0) (as required by both ansi c-98 and 1747 * implement realloc (x, 0) (as required by both ansi c-89 and
565 * the single unix specification, so work around them here. 1748 * the single unix specification, so work around them here.
1749 * recently, also (at least) fedora and debian started breaking it,
1750 * despite documenting it otherwise.
566 */ 1751 */
567 1752
568 if (size) 1753 if (size)
569 return realloc (ptr, size); 1754 return realloc (ptr, size);
570 1755
571 free (ptr); 1756 free (ptr);
572 return 0; 1757 return 0;
573} 1758}
574 1759
575static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1760static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
576 1761
1762ecb_cold
577void 1763void
578ev_set_allocator (void *(*cb)(void *ptr, long size)) 1764ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
579{ 1765{
580 alloc = cb; 1766 alloc = cb;
581} 1767}
582 1768
583inline_speed void * 1769inline_speed void *
… …
586 ptr = alloc (ptr, size); 1772 ptr = alloc (ptr, size);
587 1773
588 if (!ptr && size) 1774 if (!ptr && size)
589 { 1775 {
590#if EV_AVOID_STDIO 1776#if EV_AVOID_STDIO
591 write (STDERR_FILENO, "libev: memory allocation failed, aborting.", 1777 ev_printerr ("(libev) memory allocation failed, aborting.\n");
592 sizeof ("libev: memory allocation failed, aborting.") - 1);
593#else 1778#else
594 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1779 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
595#endif 1780#endif
596 abort (); 1781 abort ();
597 } 1782 }
598 1783
599 return ptr; 1784 return ptr;
… …
611typedef struct 1796typedef struct
612{ 1797{
613 WL head; 1798 WL head;
614 unsigned char events; /* the events watched for */ 1799 unsigned char events; /* the events watched for */
615 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1800 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
616 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1801 unsigned char emask; /* some backends store the actual kernel mask in here */
617 unsigned char unused; 1802 unsigned char unused;
618#if EV_USE_EPOLL 1803#if EV_USE_EPOLL
619 unsigned int egen; /* generation counter to counter epoll bugs */ 1804 unsigned int egen; /* generation counter to counter epoll bugs */
620#endif 1805#endif
621#if EV_SELECT_IS_WINSOCKET 1806#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
622 SOCKET handle; 1807 SOCKET handle;
1808#endif
1809#if EV_USE_IOCP
1810 OVERLAPPED or, ow;
623#endif 1811#endif
624} ANFD; 1812} ANFD;
625 1813
626/* stores the pending event set for a given watcher */ 1814/* stores the pending event set for a given watcher */
627typedef struct 1815typedef struct
… …
669 #undef VAR 1857 #undef VAR
670 }; 1858 };
671 #include "ev_wrap.h" 1859 #include "ev_wrap.h"
672 1860
673 static struct ev_loop default_loop_struct; 1861 static struct ev_loop default_loop_struct;
674 struct ev_loop *ev_default_loop_ptr; 1862 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
675 1863
676#else 1864#else
677 1865
678 ev_tstamp ev_rt_now; 1866 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
679 #define VAR(name,decl) static decl; 1867 #define VAR(name,decl) static decl;
680 #include "ev_vars.h" 1868 #include "ev_vars.h"
681 #undef VAR 1869 #undef VAR
682 1870
683 static int ev_default_loop_ptr; 1871 static int ev_default_loop_ptr;
684 1872
685#endif 1873#endif
686 1874
687#if EV_MINIMAL < 2 1875#if EV_FEATURE_API
688# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1876# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
689# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1877# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
690# define EV_INVOKE_PENDING invoke_cb (EV_A) 1878# define EV_INVOKE_PENDING invoke_cb (EV_A)
691#else 1879#else
692# define EV_RELEASE_CB (void)0 1880# define EV_RELEASE_CB (void)0
693# define EV_ACQUIRE_CB (void)0 1881# define EV_ACQUIRE_CB (void)0
694# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1882# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
695#endif 1883#endif
696 1884
697#define EVUNLOOP_RECURSE 0x80 1885#define EVBREAK_RECURSE 0x80
698 1886
699/*****************************************************************************/ 1887/*****************************************************************************/
700 1888
701#ifndef EV_HAVE_EV_TIME 1889#ifndef EV_HAVE_EV_TIME
702ev_tstamp 1890ev_tstamp
703ev_time (void) 1891ev_time (void) EV_NOEXCEPT
704{ 1892{
705#if EV_USE_REALTIME 1893#if EV_USE_REALTIME
706 if (expect_true (have_realtime)) 1894 if (ecb_expect_true (have_realtime))
707 { 1895 {
708 struct timespec ts; 1896 struct timespec ts;
709 clock_gettime (CLOCK_REALTIME, &ts); 1897 clock_gettime (CLOCK_REALTIME, &ts);
710 return ts.tv_sec + ts.tv_nsec * 1e-9; 1898 return ts.tv_sec + ts.tv_nsec * 1e-9;
711 } 1899 }
… …
719 1907
720inline_size ev_tstamp 1908inline_size ev_tstamp
721get_clock (void) 1909get_clock (void)
722{ 1910{
723#if EV_USE_MONOTONIC 1911#if EV_USE_MONOTONIC
724 if (expect_true (have_monotonic)) 1912 if (ecb_expect_true (have_monotonic))
725 { 1913 {
726 struct timespec ts; 1914 struct timespec ts;
727 clock_gettime (CLOCK_MONOTONIC, &ts); 1915 clock_gettime (CLOCK_MONOTONIC, &ts);
728 return ts.tv_sec + ts.tv_nsec * 1e-9; 1916 return ts.tv_sec + ts.tv_nsec * 1e-9;
729 } 1917 }
… …
732 return ev_time (); 1920 return ev_time ();
733} 1921}
734 1922
735#if EV_MULTIPLICITY 1923#if EV_MULTIPLICITY
736ev_tstamp 1924ev_tstamp
737ev_now (EV_P) 1925ev_now (EV_P) EV_NOEXCEPT
738{ 1926{
739 return ev_rt_now; 1927 return ev_rt_now;
740} 1928}
741#endif 1929#endif
742 1930
743void 1931void
744ev_sleep (ev_tstamp delay) 1932ev_sleep (ev_tstamp delay) EV_NOEXCEPT
745{ 1933{
746 if (delay > 0.) 1934 if (delay > 0.)
747 { 1935 {
748#if EV_USE_NANOSLEEP 1936#if EV_USE_NANOSLEEP
749 struct timespec ts; 1937 struct timespec ts;
750 1938
751 ts.tv_sec = (time_t)delay; 1939 EV_TS_SET (ts, delay);
752 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
753
754 nanosleep (&ts, 0); 1940 nanosleep (&ts, 0);
755#elif defined(_WIN32) 1941#elif defined _WIN32
1942 /* maybe this should round up, as ms is very low resolution */
1943 /* compared to select (µs) or nanosleep (ns) */
756 Sleep ((unsigned long)(delay * 1e3)); 1944 Sleep ((unsigned long)(delay * 1e3));
757#else 1945#else
758 struct timeval tv; 1946 struct timeval tv;
759
760 tv.tv_sec = (time_t)delay;
761 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
762 1947
763 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1948 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
764 /* something not guaranteed by newer posix versions, but guaranteed */ 1949 /* something not guaranteed by newer posix versions, but guaranteed */
765 /* by older ones */ 1950 /* by older ones */
1951 EV_TV_SET (tv, delay);
766 select (0, 0, 0, 0, &tv); 1952 select (0, 0, 0, 0, &tv);
767#endif 1953#endif
768 } 1954 }
769} 1955}
770 1956
771/*****************************************************************************/ 1957/*****************************************************************************/
772 1958
773#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1959#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
774 1960
775/* find a suitable new size for the given array, */ 1961/* find a suitable new size for the given array, */
776/* hopefully by rounding to a ncie-to-malloc size */ 1962/* hopefully by rounding to a nice-to-malloc size */
777inline_size int 1963inline_size int
778array_nextsize (int elem, int cur, int cnt) 1964array_nextsize (int elem, int cur, int cnt)
779{ 1965{
780 int ncur = cur + 1; 1966 int ncur = cur + 1;
781 1967
782 do 1968 do
783 ncur <<= 1; 1969 ncur <<= 1;
784 while (cnt > ncur); 1970 while (cnt > ncur);
785 1971
786 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1972 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
787 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1973 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
788 { 1974 {
789 ncur *= elem; 1975 ncur *= elem;
790 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1976 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
791 ncur = ncur - sizeof (void *) * 4; 1977 ncur = ncur - sizeof (void *) * 4;
… …
793 } 1979 }
794 1980
795 return ncur; 1981 return ncur;
796} 1982}
797 1983
798static noinline void * 1984ecb_noinline ecb_cold
1985static void *
799array_realloc (int elem, void *base, int *cur, int cnt) 1986array_realloc (int elem, void *base, int *cur, int cnt)
800{ 1987{
801 *cur = array_nextsize (elem, *cur, cnt); 1988 *cur = array_nextsize (elem, *cur, cnt);
802 return ev_realloc (base, elem * *cur); 1989 return ev_realloc (base, elem * *cur);
803} 1990}
804 1991
1992#define array_needsize_noinit(base,offset,count)
1993
805#define array_init_zero(base,count) \ 1994#define array_needsize_zerofill(base,offset,count) \
806 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1995 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
807 1996
808#define array_needsize(type,base,cur,cnt,init) \ 1997#define array_needsize(type,base,cur,cnt,init) \
809 if (expect_false ((cnt) > (cur))) \ 1998 if (ecb_expect_false ((cnt) > (cur))) \
810 { \ 1999 { \
811 int ocur_ = (cur); \ 2000 ecb_unused int ocur_ = (cur); \
812 (base) = (type *)array_realloc \ 2001 (base) = (type *)array_realloc \
813 (sizeof (type), (base), &(cur), (cnt)); \ 2002 (sizeof (type), (base), &(cur), (cnt)); \
814 init ((base) + (ocur_), (cur) - ocur_); \ 2003 init ((base), ocur_, ((cur) - ocur_)); \
815 } 2004 }
816 2005
817#if 0 2006#if 0
818#define array_slim(type,stem) \ 2007#define array_slim(type,stem) \
819 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2008 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
828 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2017 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
829 2018
830/*****************************************************************************/ 2019/*****************************************************************************/
831 2020
832/* dummy callback for pending events */ 2021/* dummy callback for pending events */
833static void noinline 2022ecb_noinline
2023static void
834pendingcb (EV_P_ ev_prepare *w, int revents) 2024pendingcb (EV_P_ ev_prepare *w, int revents)
835{ 2025{
836} 2026}
837 2027
838void noinline 2028ecb_noinline
2029void
839ev_feed_event (EV_P_ void *w, int revents) 2030ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
840{ 2031{
841 W w_ = (W)w; 2032 W w_ = (W)w;
842 int pri = ABSPRI (w_); 2033 int pri = ABSPRI (w_);
843 2034
844 if (expect_false (w_->pending)) 2035 if (ecb_expect_false (w_->pending))
845 pendings [pri][w_->pending - 1].events |= revents; 2036 pendings [pri][w_->pending - 1].events |= revents;
846 else 2037 else
847 { 2038 {
848 w_->pending = ++pendingcnt [pri]; 2039 w_->pending = ++pendingcnt [pri];
849 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2040 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
850 pendings [pri][w_->pending - 1].w = w_; 2041 pendings [pri][w_->pending - 1].w = w_;
851 pendings [pri][w_->pending - 1].events = revents; 2042 pendings [pri][w_->pending - 1].events = revents;
852 } 2043 }
2044
2045 pendingpri = NUMPRI - 1;
853} 2046}
854 2047
855inline_speed void 2048inline_speed void
856feed_reverse (EV_P_ W w) 2049feed_reverse (EV_P_ W w)
857{ 2050{
858 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2051 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
859 rfeeds [rfeedcnt++] = w; 2052 rfeeds [rfeedcnt++] = w;
860} 2053}
861 2054
862inline_size void 2055inline_size void
863feed_reverse_done (EV_P_ int revents) 2056feed_reverse_done (EV_P_ int revents)
… …
877} 2070}
878 2071
879/*****************************************************************************/ 2072/*****************************************************************************/
880 2073
881inline_speed void 2074inline_speed void
882fd_event_nc (EV_P_ int fd, int revents) 2075fd_event_nocheck (EV_P_ int fd, int revents)
883{ 2076{
884 ANFD *anfd = anfds + fd; 2077 ANFD *anfd = anfds + fd;
885 ev_io *w; 2078 ev_io *w;
886 2079
887 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2080 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
898inline_speed void 2091inline_speed void
899fd_event (EV_P_ int fd, int revents) 2092fd_event (EV_P_ int fd, int revents)
900{ 2093{
901 ANFD *anfd = anfds + fd; 2094 ANFD *anfd = anfds + fd;
902 2095
903 if (expect_true (!anfd->reify)) 2096 if (ecb_expect_true (!anfd->reify))
904 fd_event_nc (EV_A_ fd, revents); 2097 fd_event_nocheck (EV_A_ fd, revents);
905} 2098}
906 2099
907void 2100void
908ev_feed_fd_event (EV_P_ int fd, int revents) 2101ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
909{ 2102{
910 if (fd >= 0 && fd < anfdmax) 2103 if (fd >= 0 && fd < anfdmax)
911 fd_event_nc (EV_A_ fd, revents); 2104 fd_event_nocheck (EV_A_ fd, revents);
912} 2105}
913 2106
914/* make sure the external fd watch events are in-sync */ 2107/* make sure the external fd watch events are in-sync */
915/* with the kernel/libev internal state */ 2108/* with the kernel/libev internal state */
916inline_size void 2109inline_size void
917fd_reify (EV_P) 2110fd_reify (EV_P)
918{ 2111{
919 int i; 2112 int i;
920 2113
2114#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2115 for (i = 0; i < fdchangecnt; ++i)
2116 {
2117 int fd = fdchanges [i];
2118 ANFD *anfd = anfds + fd;
2119
2120 if (anfd->reify & EV__IOFDSET && anfd->head)
2121 {
2122 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2123
2124 if (handle != anfd->handle)
2125 {
2126 unsigned long arg;
2127
2128 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2129
2130 /* handle changed, but fd didn't - we need to do it in two steps */
2131 backend_modify (EV_A_ fd, anfd->events, 0);
2132 anfd->events = 0;
2133 anfd->handle = handle;
2134 }
2135 }
2136 }
2137#endif
2138
921 for (i = 0; i < fdchangecnt; ++i) 2139 for (i = 0; i < fdchangecnt; ++i)
922 { 2140 {
923 int fd = fdchanges [i]; 2141 int fd = fdchanges [i];
924 ANFD *anfd = anfds + fd; 2142 ANFD *anfd = anfds + fd;
925 ev_io *w; 2143 ev_io *w;
926 2144
927 unsigned char events = 0; 2145 unsigned char o_events = anfd->events;
2146 unsigned char o_reify = anfd->reify;
928 2147
929 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2148 anfd->reify = 0;
930 events |= (unsigned char)w->events;
931 2149
932#if EV_SELECT_IS_WINSOCKET 2150 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
933 if (events)
934 { 2151 {
935 unsigned long arg; 2152 anfd->events = 0;
936 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2153
937 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2154 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2155 anfd->events |= (unsigned char)w->events;
2156
2157 if (o_events != anfd->events)
2158 o_reify = EV__IOFDSET; /* actually |= */
938 } 2159 }
939#endif
940 2160
941 { 2161 if (o_reify & EV__IOFDSET)
942 unsigned char o_events = anfd->events;
943 unsigned char o_reify = anfd->reify;
944
945 anfd->reify = 0;
946 anfd->events = events;
947
948 if (o_events != events || o_reify & EV__IOFDSET)
949 backend_modify (EV_A_ fd, o_events, events); 2162 backend_modify (EV_A_ fd, o_events, anfd->events);
950 }
951 } 2163 }
952 2164
953 fdchangecnt = 0; 2165 fdchangecnt = 0;
954} 2166}
955 2167
956/* something about the given fd changed */ 2168/* something about the given fd changed */
957inline_size void 2169inline_size
2170void
958fd_change (EV_P_ int fd, int flags) 2171fd_change (EV_P_ int fd, int flags)
959{ 2172{
960 unsigned char reify = anfds [fd].reify; 2173 unsigned char reify = anfds [fd].reify;
961 anfds [fd].reify |= flags; 2174 anfds [fd].reify |= flags;
962 2175
963 if (expect_true (!reify)) 2176 if (ecb_expect_true (!reify))
964 { 2177 {
965 ++fdchangecnt; 2178 ++fdchangecnt;
966 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2179 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
967 fdchanges [fdchangecnt - 1] = fd; 2180 fdchanges [fdchangecnt - 1] = fd;
968 } 2181 }
969} 2182}
970 2183
971/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2184/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
972inline_speed void 2185inline_speed ecb_cold void
973fd_kill (EV_P_ int fd) 2186fd_kill (EV_P_ int fd)
974{ 2187{
975 ev_io *w; 2188 ev_io *w;
976 2189
977 while ((w = (ev_io *)anfds [fd].head)) 2190 while ((w = (ev_io *)anfds [fd].head))
… …
979 ev_io_stop (EV_A_ w); 2192 ev_io_stop (EV_A_ w);
980 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2193 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
981 } 2194 }
982} 2195}
983 2196
984/* check whether the given fd is atcually valid, for error recovery */ 2197/* check whether the given fd is actually valid, for error recovery */
985inline_size int 2198inline_size ecb_cold int
986fd_valid (int fd) 2199fd_valid (int fd)
987{ 2200{
988#ifdef _WIN32 2201#ifdef _WIN32
989 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2202 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
990#else 2203#else
991 return fcntl (fd, F_GETFD) != -1; 2204 return fcntl (fd, F_GETFD) != -1;
992#endif 2205#endif
993} 2206}
994 2207
995/* called on EBADF to verify fds */ 2208/* called on EBADF to verify fds */
996static void noinline 2209ecb_noinline ecb_cold
2210static void
997fd_ebadf (EV_P) 2211fd_ebadf (EV_P)
998{ 2212{
999 int fd; 2213 int fd;
1000 2214
1001 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
… …
1003 if (!fd_valid (fd) && errno == EBADF) 2217 if (!fd_valid (fd) && errno == EBADF)
1004 fd_kill (EV_A_ fd); 2218 fd_kill (EV_A_ fd);
1005} 2219}
1006 2220
1007/* called on ENOMEM in select/poll to kill some fds and retry */ 2221/* called on ENOMEM in select/poll to kill some fds and retry */
1008static void noinline 2222ecb_noinline ecb_cold
2223static void
1009fd_enomem (EV_P) 2224fd_enomem (EV_P)
1010{ 2225{
1011 int fd; 2226 int fd;
1012 2227
1013 for (fd = anfdmax; fd--; ) 2228 for (fd = anfdmax; fd--; )
… …
1017 break; 2232 break;
1018 } 2233 }
1019} 2234}
1020 2235
1021/* usually called after fork if backend needs to re-arm all fds from scratch */ 2236/* usually called after fork if backend needs to re-arm all fds from scratch */
1022static void noinline 2237ecb_noinline
2238static void
1023fd_rearm_all (EV_P) 2239fd_rearm_all (EV_P)
1024{ 2240{
1025 int fd; 2241 int fd;
1026 2242
1027 for (fd = 0; fd < anfdmax; ++fd) 2243 for (fd = 0; fd < anfdmax; ++fd)
… …
1031 anfds [fd].emask = 0; 2247 anfds [fd].emask = 0;
1032 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2248 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1033 } 2249 }
1034} 2250}
1035 2251
2252/* used to prepare libev internal fd's */
2253/* this is not fork-safe */
2254inline_speed void
2255fd_intern (int fd)
2256{
2257#ifdef _WIN32
2258 unsigned long arg = 1;
2259 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2260#else
2261 fcntl (fd, F_SETFD, FD_CLOEXEC);
2262 fcntl (fd, F_SETFL, O_NONBLOCK);
2263#endif
2264}
2265
1036/*****************************************************************************/ 2266/*****************************************************************************/
1037 2267
1038/* 2268/*
1039 * the heap functions want a real array index. array index 0 uis guaranteed to not 2269 * the heap functions want a real array index. array index 0 is guaranteed to not
1040 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2270 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1041 * the branching factor of the d-tree. 2271 * the branching factor of the d-tree.
1042 */ 2272 */
1043 2273
1044/* 2274/*
… …
1066 ev_tstamp minat; 2296 ev_tstamp minat;
1067 ANHE *minpos; 2297 ANHE *minpos;
1068 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2298 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1069 2299
1070 /* find minimum child */ 2300 /* find minimum child */
1071 if (expect_true (pos + DHEAP - 1 < E)) 2301 if (ecb_expect_true (pos + DHEAP - 1 < E))
1072 { 2302 {
1073 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2303 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1074 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2304 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1075 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2305 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1076 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2306 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
1192 2422
1193static ANSIG signals [EV_NSIG - 1]; 2423static ANSIG signals [EV_NSIG - 1];
1194 2424
1195/*****************************************************************************/ 2425/*****************************************************************************/
1196 2426
1197/* used to prepare libev internal fd's */ 2427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1198/* this is not fork-safe */ 2428
2429ecb_noinline ecb_cold
2430static void
2431evpipe_init (EV_P)
2432{
2433 if (!ev_is_active (&pipe_w))
2434 {
2435 int fds [2];
2436
2437# if EV_USE_EVENTFD
2438 fds [0] = -1;
2439 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2440 if (fds [1] < 0 && errno == EINVAL)
2441 fds [1] = eventfd (0, 0);
2442
2443 if (fds [1] < 0)
2444# endif
2445 {
2446 while (pipe (fds))
2447 ev_syserr ("(libev) error creating signal/async pipe");
2448
2449 fd_intern (fds [0]);
2450 }
2451
2452 evpipe [0] = fds [0];
2453
2454 if (evpipe [1] < 0)
2455 evpipe [1] = fds [1]; /* first call, set write fd */
2456 else
2457 {
2458 /* on subsequent calls, do not change evpipe [1] */
2459 /* so that evpipe_write can always rely on its value. */
2460 /* this branch does not do anything sensible on windows, */
2461 /* so must not be executed on windows */
2462
2463 dup2 (fds [1], evpipe [1]);
2464 close (fds [1]);
2465 }
2466
2467 fd_intern (evpipe [1]);
2468
2469 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2470 ev_io_start (EV_A_ &pipe_w);
2471 ev_unref (EV_A); /* watcher should not keep loop alive */
2472 }
2473}
2474
1199inline_speed void 2475inline_speed void
1200fd_intern (int fd) 2476evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1201{ 2477{
1202#ifdef _WIN32 2478 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1203 unsigned long arg = 1;
1204 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1205#else
1206 fcntl (fd, F_SETFD, FD_CLOEXEC);
1207 fcntl (fd, F_SETFL, O_NONBLOCK);
1208#endif
1209}
1210 2479
1211static void noinline 2480 if (ecb_expect_true (*flag))
1212evpipe_init (EV_P) 2481 return;
1213{ 2482
1214 if (!ev_is_active (&pipe_w)) 2483 *flag = 1;
2484 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2485
2486 pipe_write_skipped = 1;
2487
2488 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2489
2490 if (pipe_write_wanted)
1215 { 2491 {
2492 int old_errno;
2493
2494 pipe_write_skipped = 0;
2495 ECB_MEMORY_FENCE_RELEASE;
2496
2497 old_errno = errno; /* save errno because write will clobber it */
2498
1216#if EV_USE_EVENTFD 2499#if EV_USE_EVENTFD
1217 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2500 if (evpipe [0] < 0)
1218 if (evfd < 0 && errno == EINVAL)
1219 evfd = eventfd (0, 0);
1220
1221 if (evfd >= 0)
1222 { 2501 {
1223 evpipe [0] = -1; 2502 uint64_t counter = 1;
1224 fd_intern (evfd); /* doing it twice doesn't hurt */ 2503 write (evpipe [1], &counter, sizeof (uint64_t));
1225 ev_io_set (&pipe_w, evfd, EV_READ);
1226 } 2504 }
1227 else 2505 else
1228#endif 2506#endif
1229 { 2507 {
1230 while (pipe (evpipe)) 2508#ifdef _WIN32
1231 ev_syserr ("(libev) error creating signal/async pipe"); 2509 WSABUF buf;
1232 2510 DWORD sent;
1233 fd_intern (evpipe [0]); 2511 buf.buf = (char *)&buf;
1234 fd_intern (evpipe [1]); 2512 buf.len = 1;
1235 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2513 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2514#else
2515 write (evpipe [1], &(evpipe [1]), 1);
2516#endif
1236 } 2517 }
1237
1238 ev_io_start (EV_A_ &pipe_w);
1239 ev_unref (EV_A); /* watcher should not keep loop alive */
1240 }
1241}
1242
1243inline_size void
1244evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1245{
1246 if (!*flag)
1247 {
1248 int old_errno = errno; /* save errno because write might clobber it */
1249
1250 *flag = 1;
1251
1252#if EV_USE_EVENTFD
1253 if (evfd >= 0)
1254 {
1255 uint64_t counter = 1;
1256 write (evfd, &counter, sizeof (uint64_t));
1257 }
1258 else
1259#endif
1260 write (evpipe [1], &old_errno, 1);
1261 2518
1262 errno = old_errno; 2519 errno = old_errno;
1263 } 2520 }
1264} 2521}
1265 2522
… …
1268static void 2525static void
1269pipecb (EV_P_ ev_io *iow, int revents) 2526pipecb (EV_P_ ev_io *iow, int revents)
1270{ 2527{
1271 int i; 2528 int i;
1272 2529
2530 if (revents & EV_READ)
2531 {
1273#if EV_USE_EVENTFD 2532#if EV_USE_EVENTFD
1274 if (evfd >= 0) 2533 if (evpipe [0] < 0)
1275 { 2534 {
1276 uint64_t counter; 2535 uint64_t counter;
1277 read (evfd, &counter, sizeof (uint64_t)); 2536 read (evpipe [1], &counter, sizeof (uint64_t));
1278 } 2537 }
1279 else 2538 else
1280#endif 2539#endif
1281 { 2540 {
1282 char dummy; 2541 char dummy[4];
2542#ifdef _WIN32
2543 WSABUF buf;
2544 DWORD recvd;
2545 DWORD flags = 0;
2546 buf.buf = dummy;
2547 buf.len = sizeof (dummy);
2548 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2549#else
1283 read (evpipe [0], &dummy, 1); 2550 read (evpipe [0], &dummy, sizeof (dummy));
2551#endif
2552 }
1284 } 2553 }
1285 2554
2555 pipe_write_skipped = 0;
2556
2557 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2558
2559#if EV_SIGNAL_ENABLE
1286 if (sig_pending) 2560 if (sig_pending)
1287 { 2561 {
1288 sig_pending = 0; 2562 sig_pending = 0;
1289 2563
2564 ECB_MEMORY_FENCE;
2565
1290 for (i = EV_NSIG - 1; i--; ) 2566 for (i = EV_NSIG - 1; i--; )
1291 if (expect_false (signals [i].pending)) 2567 if (ecb_expect_false (signals [i].pending))
1292 ev_feed_signal_event (EV_A_ i + 1); 2568 ev_feed_signal_event (EV_A_ i + 1);
1293 } 2569 }
2570#endif
1294 2571
1295#if EV_ASYNC_ENABLE 2572#if EV_ASYNC_ENABLE
1296 if (async_pending) 2573 if (async_pending)
1297 { 2574 {
1298 async_pending = 0; 2575 async_pending = 0;
2576
2577 ECB_MEMORY_FENCE;
1299 2578
1300 for (i = asynccnt; i--; ) 2579 for (i = asynccnt; i--; )
1301 if (asyncs [i]->sent) 2580 if (asyncs [i]->sent)
1302 { 2581 {
1303 asyncs [i]->sent = 0; 2582 asyncs [i]->sent = 0;
2583 ECB_MEMORY_FENCE_RELEASE;
1304 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2584 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1305 } 2585 }
1306 } 2586 }
1307#endif 2587#endif
1308} 2588}
1309 2589
1310/*****************************************************************************/ 2590/*****************************************************************************/
1311 2591
2592void
2593ev_feed_signal (int signum) EV_NOEXCEPT
2594{
2595#if EV_MULTIPLICITY
2596 EV_P;
2597 ECB_MEMORY_FENCE_ACQUIRE;
2598 EV_A = signals [signum - 1].loop;
2599
2600 if (!EV_A)
2601 return;
2602#endif
2603
2604 signals [signum - 1].pending = 1;
2605 evpipe_write (EV_A_ &sig_pending);
2606}
2607
1312static void 2608static void
1313ev_sighandler (int signum) 2609ev_sighandler (int signum)
1314{ 2610{
1315#if EV_MULTIPLICITY
1316 EV_P = signals [signum - 1].loop;
1317#endif
1318
1319#ifdef _WIN32 2611#ifdef _WIN32
1320 signal (signum, ev_sighandler); 2612 signal (signum, ev_sighandler);
1321#endif 2613#endif
1322 2614
1323 signals [signum - 1].pending = 1; 2615 ev_feed_signal (signum);
1324 evpipe_write (EV_A_ &sig_pending);
1325} 2616}
1326 2617
1327void noinline 2618ecb_noinline
2619void
1328ev_feed_signal_event (EV_P_ int signum) 2620ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1329{ 2621{
1330 WL w; 2622 WL w;
1331 2623
1332 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2624 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1333 return; 2625 return;
1334 2626
1335 --signum; 2627 --signum;
1336 2628
1337#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1338 /* it is permissible to try to feed a signal to the wrong loop */ 2630 /* it is permissible to try to feed a signal to the wrong loop */
1339 /* or, likely more useful, feeding a signal nobody is waiting for */ 2631 /* or, likely more useful, feeding a signal nobody is waiting for */
1340 2632
1341 if (expect_false (signals [signum].loop != EV_A)) 2633 if (ecb_expect_false (signals [signum].loop != EV_A))
1342 return; 2634 return;
1343#endif 2635#endif
1344 2636
1345 signals [signum].pending = 0; 2637 signals [signum].pending = 0;
2638 ECB_MEMORY_FENCE_RELEASE;
1346 2639
1347 for (w = signals [signum].head; w; w = w->next) 2640 for (w = signals [signum].head; w; w = w->next)
1348 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2641 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1349} 2642}
1350 2643
… …
1366 break; 2659 break;
1367 } 2660 }
1368} 2661}
1369#endif 2662#endif
1370 2663
2664#endif
2665
1371/*****************************************************************************/ 2666/*****************************************************************************/
1372 2667
2668#if EV_CHILD_ENABLE
1373static WL childs [EV_PID_HASHSIZE]; 2669static WL childs [EV_PID_HASHSIZE];
1374
1375#ifndef _WIN32
1376 2670
1377static ev_signal childev; 2671static ev_signal childev;
1378 2672
1379#ifndef WIFCONTINUED 2673#ifndef WIFCONTINUED
1380# define WIFCONTINUED(status) 0 2674# define WIFCONTINUED(status) 0
… …
1385child_reap (EV_P_ int chain, int pid, int status) 2679child_reap (EV_P_ int chain, int pid, int status)
1386{ 2680{
1387 ev_child *w; 2681 ev_child *w;
1388 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2682 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1389 2683
1390 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2684 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1391 { 2685 {
1392 if ((w->pid == pid || !w->pid) 2686 if ((w->pid == pid || !w->pid)
1393 && (!traced || (w->flags & 1))) 2687 && (!traced || (w->flags & 1)))
1394 { 2688 {
1395 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2689 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1420 /* make sure we are called again until all children have been reaped */ 2714 /* make sure we are called again until all children have been reaped */
1421 /* we need to do it this way so that the callback gets called before we continue */ 2715 /* we need to do it this way so that the callback gets called before we continue */
1422 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2716 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1423 2717
1424 child_reap (EV_A_ pid, pid, status); 2718 child_reap (EV_A_ pid, pid, status);
1425 if (EV_PID_HASHSIZE > 1) 2719 if ((EV_PID_HASHSIZE) > 1)
1426 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2720 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1427} 2721}
1428 2722
1429#endif 2723#endif
1430 2724
1431/*****************************************************************************/ 2725/*****************************************************************************/
1432 2726
2727#if EV_USE_IOCP
2728# include "ev_iocp.c"
2729#endif
1433#if EV_USE_PORT 2730#if EV_USE_PORT
1434# include "ev_port.c" 2731# include "ev_port.c"
1435#endif 2732#endif
1436#if EV_USE_KQUEUE 2733#if EV_USE_KQUEUE
1437# include "ev_kqueue.c" 2734# include "ev_kqueue.c"
1438#endif 2735#endif
1439#if EV_USE_EPOLL 2736#if EV_USE_EPOLL
1440# include "ev_epoll.c" 2737# include "ev_epoll.c"
1441#endif 2738#endif
2739#if EV_USE_LINUXAIO
2740# include "ev_linuxaio.c"
2741#endif
1442#if EV_USE_POLL 2742#if EV_USE_POLL
1443# include "ev_poll.c" 2743# include "ev_poll.c"
1444#endif 2744#endif
1445#if EV_USE_SELECT 2745#if EV_USE_SELECT
1446# include "ev_select.c" 2746# include "ev_select.c"
1447#endif 2747#endif
1448 2748
1449int 2749ecb_cold int
1450ev_version_major (void) 2750ev_version_major (void) EV_NOEXCEPT
1451{ 2751{
1452 return EV_VERSION_MAJOR; 2752 return EV_VERSION_MAJOR;
1453} 2753}
1454 2754
1455int 2755ecb_cold int
1456ev_version_minor (void) 2756ev_version_minor (void) EV_NOEXCEPT
1457{ 2757{
1458 return EV_VERSION_MINOR; 2758 return EV_VERSION_MINOR;
1459} 2759}
1460 2760
1461/* return true if we are running with elevated privileges and should ignore env variables */ 2761/* return true if we are running with elevated privileges and should ignore env variables */
1462int inline_size 2762inline_size ecb_cold int
1463enable_secure (void) 2763enable_secure (void)
1464{ 2764{
1465#ifdef _WIN32 2765#ifdef _WIN32
1466 return 0; 2766 return 0;
1467#else 2767#else
1468 return getuid () != geteuid () 2768 return getuid () != geteuid ()
1469 || getgid () != getegid (); 2769 || getgid () != getegid ();
1470#endif 2770#endif
1471} 2771}
1472 2772
2773ecb_cold
1473unsigned int 2774unsigned int
1474ev_supported_backends (void) 2775ev_supported_backends (void) EV_NOEXCEPT
1475{ 2776{
1476 unsigned int flags = 0; 2777 unsigned int flags = 0;
1477 2778
1478 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2779 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1479 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2780 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1480 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2781 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2782 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1481 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2783 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1482 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2784 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1483 2785
1484 return flags; 2786 return flags;
1485} 2787}
1486 2788
2789ecb_cold
1487unsigned int 2790unsigned int
1488ev_recommended_backends (void) 2791ev_recommended_backends (void) EV_NOEXCEPT
1489{ 2792{
1490 unsigned int flags = ev_supported_backends (); 2793 unsigned int flags = ev_supported_backends ();
1491 2794
1492#ifndef __NetBSD__ 2795#ifndef __NetBSD__
1493 /* kqueue is borked on everything but netbsd apparently */ 2796 /* kqueue is borked on everything but netbsd apparently */
… …
1497#ifdef __APPLE__ 2800#ifdef __APPLE__
1498 /* only select works correctly on that "unix-certified" platform */ 2801 /* only select works correctly on that "unix-certified" platform */
1499 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2802 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1500 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2803 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1501#endif 2804#endif
2805#ifdef __FreeBSD__
2806 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2807#endif
2808
2809 /* TODO: linuxaio is very experimental */
2810#if !EV_RECOMMEND_LINUXAIO
2811 flags &= ~EVBACKEND_LINUXAIO;
2812#endif
1502 2813
1503 return flags; 2814 return flags;
1504} 2815}
1505 2816
2817ecb_cold
1506unsigned int 2818unsigned int
1507ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
1508{ 2820{
1509 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1510 2822
1511 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2823 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1512 /* please fix it and tell me how to detect the fix */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1513 flags &= ~EVBACKEND_EPOLL; 2825 flags &= ~EVBACKEND_EPOLL;
1514 2826
1515 return flags; 2827 return flags;
1516} 2828}
1517 2829
1518unsigned int 2830unsigned int
1519ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
1520{ 2832{
1521 return backend; 2833 return backend;
1522} 2834}
1523 2835
1524#if EV_MINIMAL < 2 2836#if EV_FEATURE_API
1525unsigned int 2837unsigned int
1526ev_loop_count (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
1527{ 2839{
1528 return loop_count; 2840 return loop_count;
1529} 2841}
1530 2842
1531unsigned int 2843unsigned int
1532ev_loop_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
1533{ 2845{
1534 return loop_depth; 2846 return loop_depth;
1535} 2847}
1536 2848
1537void 2849void
1538ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1539{ 2851{
1540 io_blocktime = interval; 2852 io_blocktime = interval;
1541} 2853}
1542 2854
1543void 2855void
1544ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1545{ 2857{
1546 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
1547} 2859}
1548 2860
1549void 2861void
1550ev_set_userdata (EV_P_ void *data) 2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1551{ 2863{
1552 userdata = data; 2864 userdata = data;
1553} 2865}
1554 2866
1555void * 2867void *
1556ev_userdata (EV_P) 2868ev_userdata (EV_P) EV_NOEXCEPT
1557{ 2869{
1558 return userdata; 2870 return userdata;
1559} 2871}
1560 2872
2873void
1561void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2874ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1562{ 2875{
1563 invoke_cb = invoke_pending_cb; 2876 invoke_cb = invoke_pending_cb;
1564} 2877}
1565 2878
2879void
1566void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2880ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1567{ 2881{
1568 release_cb = release; 2882 release_cb = release;
1569 acquire_cb = acquire; 2883 acquire_cb = acquire;
1570} 2884}
1571#endif 2885#endif
1572 2886
1573/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
1574static void noinline 2888ecb_noinline ecb_cold
2889static void
1575loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1576{ 2891{
1577 if (!backend) 2892 if (!backend)
1578 { 2893 {
2894 origflags = flags;
2895
1579#if EV_USE_REALTIME 2896#if EV_USE_REALTIME
1580 if (!have_realtime) 2897 if (!have_realtime)
1581 { 2898 {
1582 struct timespec ts; 2899 struct timespec ts;
1583 2900
… …
1605 if (!(flags & EVFLAG_NOENV) 2922 if (!(flags & EVFLAG_NOENV)
1606 && !enable_secure () 2923 && !enable_secure ()
1607 && getenv ("LIBEV_FLAGS")) 2924 && getenv ("LIBEV_FLAGS"))
1608 flags = atoi (getenv ("LIBEV_FLAGS")); 2925 flags = atoi (getenv ("LIBEV_FLAGS"));
1609 2926
1610 ev_rt_now = ev_time (); 2927 ev_rt_now = ev_time ();
1611 mn_now = get_clock (); 2928 mn_now = get_clock ();
1612 now_floor = mn_now; 2929 now_floor = mn_now;
1613 rtmn_diff = ev_rt_now - mn_now; 2930 rtmn_diff = ev_rt_now - mn_now;
1614#if EV_MINIMAL < 2 2931#if EV_FEATURE_API
1615 invoke_cb = ev_invoke_pending; 2932 invoke_cb = ev_invoke_pending;
1616#endif 2933#endif
1617 2934
1618 io_blocktime = 0.; 2935 io_blocktime = 0.;
1619 timeout_blocktime = 0.; 2936 timeout_blocktime = 0.;
1620 backend = 0; 2937 backend = 0;
1621 backend_fd = -1; 2938 backend_fd = -1;
1622 sig_pending = 0; 2939 sig_pending = 0;
1623#if EV_ASYNC_ENABLE 2940#if EV_ASYNC_ENABLE
1624 async_pending = 0; 2941 async_pending = 0;
1625#endif 2942#endif
2943 pipe_write_skipped = 0;
2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
1626#if EV_USE_INOTIFY 2947#if EV_USE_INOTIFY
1627 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1628#endif 2949#endif
1629#if EV_USE_SIGNALFD 2950#if EV_USE_SIGNALFD
1630 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1631#endif 2952#endif
1632 2953
1633 if (!(flags & 0x0000ffffU)) 2954 if (!(flags & EVBACKEND_MASK))
1634 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
1635 2956
2957#if EV_USE_IOCP
2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2959#endif
1636#if EV_USE_PORT 2960#if EV_USE_PORT
1637 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1638#endif 2962#endif
1639#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
1640 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2964 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2965#endif
2966#if EV_USE_LINUXAIO
2967 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1641#endif 2968#endif
1642#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
1643 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1644#endif 2971#endif
1645#if EV_USE_POLL 2972#if EV_USE_POLL
1646 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1647#endif 2974#endif
1648#if EV_USE_SELECT 2975#if EV_USE_SELECT
1649 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1650#endif 2977#endif
1651 2978
1652 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
1653 2980
2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1654 ev_init (&pipe_w, pipecb); 2982 ev_init (&pipe_w, pipecb);
1655 ev_set_priority (&pipe_w, EV_MAXPRI); 2983 ev_set_priority (&pipe_w, EV_MAXPRI);
2984#endif
1656 } 2985 }
1657} 2986}
1658 2987
1659/* free up a loop structure */ 2988/* free up a loop structure */
1660static void noinline 2989ecb_cold
2990void
1661loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
1662{ 2992{
1663 int i; 2993 int i;
2994
2995#if EV_MULTIPLICITY
2996 /* mimic free (0) */
2997 if (!EV_A)
2998 return;
2999#endif
3000
3001#if EV_CLEANUP_ENABLE
3002 /* queue cleanup watchers (and execute them) */
3003 if (ecb_expect_false (cleanupcnt))
3004 {
3005 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3006 EV_INVOKE_PENDING;
3007 }
3008#endif
3009
3010#if EV_CHILD_ENABLE
3011 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3012 {
3013 ev_ref (EV_A); /* child watcher */
3014 ev_signal_stop (EV_A_ &childev);
3015 }
3016#endif
1664 3017
1665 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
1666 { 3019 {
1667 /*ev_ref (EV_A);*/ 3020 /*ev_ref (EV_A);*/
1668 /*ev_io_stop (EV_A_ &pipe_w);*/ 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
1669 3022
1670#if EV_USE_EVENTFD
1671 if (evfd >= 0)
1672 close (evfd);
1673#endif
1674
1675 if (evpipe [0] >= 0)
1676 {
1677 EV_WIN32_CLOSE_FD (evpipe [0]); 3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1678 EV_WIN32_CLOSE_FD (evpipe [1]); 3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1679 }
1680 } 3025 }
1681 3026
1682#if EV_USE_SIGNALFD 3027#if EV_USE_SIGNALFD
1683 if (ev_is_active (&sigfd_w)) 3028 if (ev_is_active (&sigfd_w))
1684 close (sigfd); 3029 close (sigfd);
… …
1690#endif 3035#endif
1691 3036
1692 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
1693 close (backend_fd); 3038 close (backend_fd);
1694 3039
3040#if EV_USE_IOCP
3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3042#endif
1695#if EV_USE_PORT 3043#if EV_USE_PORT
1696 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1697#endif 3045#endif
1698#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
1699 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3047 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3048#endif
3049#if EV_USE_LINUXAIO
3050 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1700#endif 3051#endif
1701#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
1702 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1703#endif 3054#endif
1704#if EV_USE_POLL 3055#if EV_USE_POLL
1705 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1706#endif 3057#endif
1707#if EV_USE_SELECT 3058#if EV_USE_SELECT
1708 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1709#endif 3060#endif
1710 3061
1711 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
1712 { 3063 {
1713 array_free (pending, [i]); 3064 array_free (pending, [i]);
… …
1726 array_free (periodic, EMPTY); 3077 array_free (periodic, EMPTY);
1727#endif 3078#endif
1728#if EV_FORK_ENABLE 3079#if EV_FORK_ENABLE
1729 array_free (fork, EMPTY); 3080 array_free (fork, EMPTY);
1730#endif 3081#endif
3082#if EV_CLEANUP_ENABLE
3083 array_free (cleanup, EMPTY);
3084#endif
1731 array_free (prepare, EMPTY); 3085 array_free (prepare, EMPTY);
1732 array_free (check, EMPTY); 3086 array_free (check, EMPTY);
1733#if EV_ASYNC_ENABLE 3087#if EV_ASYNC_ENABLE
1734 array_free (async, EMPTY); 3088 array_free (async, EMPTY);
1735#endif 3089#endif
1736 3090
1737 backend = 0; 3091 backend = 0;
3092
3093#if EV_MULTIPLICITY
3094 if (ev_is_default_loop (EV_A))
3095#endif
3096 ev_default_loop_ptr = 0;
3097#if EV_MULTIPLICITY
3098 else
3099 ev_free (EV_A);
3100#endif
1738} 3101}
1739 3102
1740#if EV_USE_INOTIFY 3103#if EV_USE_INOTIFY
1741inline_size void infy_fork (EV_P); 3104inline_size void infy_fork (EV_P);
1742#endif 3105#endif
1743 3106
1744inline_size void 3107inline_size void
1745loop_fork (EV_P) 3108loop_fork (EV_P)
1746{ 3109{
1747#if EV_USE_PORT 3110#if EV_USE_PORT
1748 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1749#endif 3112#endif
1750#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
1751 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3114 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3115#endif
3116#if EV_USE_LINUXAIO
3117 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1752#endif 3118#endif
1753#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
1754 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1755#endif 3121#endif
1756#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
1757 infy_fork (EV_A); 3123 infy_fork (EV_A);
1758#endif 3124#endif
1759 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1760 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
1761 { 3128 {
1762 /* this "locks" the handlers against writing to the pipe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1763 /* while we modify the fd vars */
1764 sig_pending = 1;
1765#if EV_ASYNC_ENABLE
1766 async_pending = 1;
1767#endif
1768 3130
1769 ev_ref (EV_A); 3131 ev_ref (EV_A);
1770 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
1771 3133
1772#if EV_USE_EVENTFD
1773 if (evfd >= 0)
1774 close (evfd);
1775#endif
1776
1777 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
1778 {
1779 EV_WIN32_CLOSE_FD (evpipe [0]); 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
1780 EV_WIN32_CLOSE_FD (evpipe [1]);
1781 }
1782 3136
1783 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
1784 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
1785 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1786 } 3140 }
3141#endif
1787 3142
1788 postfork = 0; 3143 postfork = 0;
1789} 3144}
1790 3145
1791#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
1792 3147
3148ecb_cold
1793struct ev_loop * 3149struct ev_loop *
1794ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
1795{ 3151{
1796 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1797 3153
1798 memset (EV_A, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
1799 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
1800 3156
1801 if (ev_backend (EV_A)) 3157 if (ev_backend (EV_A))
1802 return EV_A; 3158 return EV_A;
1803 3159
3160 ev_free (EV_A);
1804 return 0; 3161 return 0;
1805} 3162}
1806 3163
1807void
1808ev_loop_destroy (EV_P)
1809{
1810 loop_destroy (EV_A);
1811 ev_free (loop);
1812}
1813
1814void
1815ev_loop_fork (EV_P)
1816{
1817 postfork = 1; /* must be in line with ev_default_fork */
1818}
1819#endif /* multiplicity */ 3164#endif /* multiplicity */
1820 3165
1821#if EV_VERIFY 3166#if EV_VERIFY
1822static void noinline 3167ecb_noinline ecb_cold
3168static void
1823verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
1824{ 3170{
1825 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3171 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1826 3172
1827 if (w->pending) 3173 if (w->pending)
1828 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3174 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1829} 3175}
1830 3176
1831static void noinline 3177ecb_noinline ecb_cold
3178static void
1832verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
1833{ 3180{
1834 int i; 3181 int i;
1835 3182
1836 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1841 3188
1842 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1843 } 3190 }
1844} 3191}
1845 3192
1846static void noinline 3193ecb_noinline ecb_cold
3194static void
1847array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
1848{ 3196{
1849 while (cnt--) 3197 while (cnt--)
1850 { 3198 {
1851 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1852 verify_watcher (EV_A_ ws [cnt]); 3200 verify_watcher (EV_A_ ws [cnt]);
1853 } 3201 }
1854} 3202}
1855#endif 3203#endif
1856 3204
1857#if EV_MINIMAL < 2 3205#if EV_FEATURE_API
1858void 3206void ecb_cold
1859ev_loop_verify (EV_P) 3207ev_verify (EV_P) EV_NOEXCEPT
1860{ 3208{
1861#if EV_VERIFY 3209#if EV_VERIFY
1862 int i; 3210 int i;
1863 WL w; 3211 WL w, w2;
1864 3212
1865 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
1866 3214
1867 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
1868 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
1869 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1870 3218
1871 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
1872 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
1873 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
1874 { 3225 {
1875 verify_watcher (EV_A_ (W)w); 3226 verify_watcher (EV_A_ (W)w);
3227
3228 if (j++ & 1)
3229 {
3230 assert (("libev: io watcher list contains a loop", w != w2));
3231 w2 = w2->next;
3232 }
3233
1876 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3234 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1877 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3235 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1878 } 3236 }
3237 }
1879 3238
1880 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
1881 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
1882 3241
1883#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
1898#if EV_FORK_ENABLE 3257#if EV_FORK_ENABLE
1899 assert (forkmax >= forkcnt); 3258 assert (forkmax >= forkcnt);
1900 array_verify (EV_A_ (W *)forks, forkcnt); 3259 array_verify (EV_A_ (W *)forks, forkcnt);
1901#endif 3260#endif
1902 3261
3262#if EV_CLEANUP_ENABLE
3263 assert (cleanupmax >= cleanupcnt);
3264 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3265#endif
3266
1903#if EV_ASYNC_ENABLE 3267#if EV_ASYNC_ENABLE
1904 assert (asyncmax >= asynccnt); 3268 assert (asyncmax >= asynccnt);
1905 array_verify (EV_A_ (W *)asyncs, asynccnt); 3269 array_verify (EV_A_ (W *)asyncs, asynccnt);
1906#endif 3270#endif
1907 3271
3272#if EV_PREPARE_ENABLE
1908 assert (preparemax >= preparecnt); 3273 assert (preparemax >= preparecnt);
1909 array_verify (EV_A_ (W *)prepares, preparecnt); 3274 array_verify (EV_A_ (W *)prepares, preparecnt);
3275#endif
1910 3276
3277#if EV_CHECK_ENABLE
1911 assert (checkmax >= checkcnt); 3278 assert (checkmax >= checkcnt);
1912 array_verify (EV_A_ (W *)checks, checkcnt); 3279 array_verify (EV_A_ (W *)checks, checkcnt);
3280#endif
1913 3281
1914# if 0 3282# if 0
3283#if EV_CHILD_ENABLE
1915 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3284 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1916 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3285 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3286#endif
1917# endif 3287# endif
1918#endif 3288#endif
1919} 3289}
1920#endif 3290#endif
1921 3291
1922#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
1923struct ev_loop * 3294struct ev_loop *
1924ev_default_loop_init (unsigned int flags)
1925#else 3295#else
1926int 3296int
3297#endif
1927ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
1928#endif
1929{ 3299{
1930 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
1931 { 3301 {
1932#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
1933 EV_P = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1937 3307
1938 loop_init (EV_A_ flags); 3308 loop_init (EV_A_ flags);
1939 3309
1940 if (ev_backend (EV_A)) 3310 if (ev_backend (EV_A))
1941 { 3311 {
1942#ifndef _WIN32 3312#if EV_CHILD_ENABLE
1943 ev_signal_init (&childev, childcb, SIGCHLD); 3313 ev_signal_init (&childev, childcb, SIGCHLD);
1944 ev_set_priority (&childev, EV_MAXPRI); 3314 ev_set_priority (&childev, EV_MAXPRI);
1945 ev_signal_start (EV_A_ &childev); 3315 ev_signal_start (EV_A_ &childev);
1946 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3316 ev_unref (EV_A); /* child watcher should not keep loop alive */
1947#endif 3317#endif
… …
1952 3322
1953 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
1954} 3324}
1955 3325
1956void 3326void
1957ev_default_destroy (void) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
1958{ 3328{
1959#if EV_MULTIPLICITY 3329 postfork = 1;
1960 EV_P = ev_default_loop_ptr;
1961#endif
1962
1963 ev_default_loop_ptr = 0;
1964
1965#ifndef _WIN32
1966 ev_ref (EV_A); /* child watcher */
1967 ev_signal_stop (EV_A_ &childev);
1968#endif
1969
1970 loop_destroy (EV_A);
1971}
1972
1973void
1974ev_default_fork (void)
1975{
1976#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr;
1978#endif
1979
1980 postfork = 1; /* must be in line with ev_loop_fork */
1981} 3330}
1982 3331
1983/*****************************************************************************/ 3332/*****************************************************************************/
1984 3333
1985void 3334void
… …
1987{ 3336{
1988 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
1989} 3338}
1990 3339
1991unsigned int 3340unsigned int
1992ev_pending_count (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
1993{ 3342{
1994 int pri; 3343 int pri;
1995 unsigned int count = 0; 3344 unsigned int count = 0;
1996 3345
1997 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
1998 count += pendingcnt [pri]; 3347 count += pendingcnt [pri];
1999 3348
2000 return count; 3349 return count;
2001} 3350}
2002 3351
2003void noinline 3352ecb_noinline
3353void
2004ev_invoke_pending (EV_P) 3354ev_invoke_pending (EV_P)
2005{ 3355{
2006 int pri; 3356 pendingpri = NUMPRI;
2007 3357
2008 for (pri = NUMPRI; pri--; ) 3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
2009 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
2010 { 3364 {
2011 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2012 3366
2013 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2014 /* ^ this is no longer true, as pending_w could be here */
2015
2016 p->w->pending = 0; 3367 p->w->pending = 0;
2017 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
2018 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
2019 } 3370 }
3371 }
3372 while (pendingpri);
2020} 3373}
2021 3374
2022#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
2023/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
2024/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
2025inline_size void 3378inline_size void
2026idle_reify (EV_P) 3379idle_reify (EV_P)
2027{ 3380{
2028 if (expect_false (idleall)) 3381 if (ecb_expect_false (idleall))
2029 { 3382 {
2030 int pri; 3383 int pri;
2031 3384
2032 for (pri = NUMPRI; pri--; ) 3385 for (pri = NUMPRI; pri--; )
2033 { 3386 {
… …
2076 EV_FREQUENT_CHECK; 3429 EV_FREQUENT_CHECK;
2077 feed_reverse (EV_A_ (W)w); 3430 feed_reverse (EV_A_ (W)w);
2078 } 3431 }
2079 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3432 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2080 3433
2081 feed_reverse_done (EV_A_ EV_TIMEOUT); 3434 feed_reverse_done (EV_A_ EV_TIMER);
2082 } 3435 }
2083} 3436}
2084 3437
2085#if EV_PERIODIC_ENABLE 3438#if EV_PERIODIC_ENABLE
3439
3440ecb_noinline
3441static void
3442periodic_recalc (EV_P_ ev_periodic *w)
3443{
3444 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3445 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3446
3447 /* the above almost always errs on the low side */
3448 while (at <= ev_rt_now)
3449 {
3450 ev_tstamp nat = at + w->interval;
3451
3452 /* when resolution fails us, we use ev_rt_now */
3453 if (ecb_expect_false (nat == at))
3454 {
3455 at = ev_rt_now;
3456 break;
3457 }
3458
3459 at = nat;
3460 }
3461
3462 ev_at (w) = at;
3463}
3464
2086/* make periodics pending */ 3465/* make periodics pending */
2087inline_size void 3466inline_size void
2088periodics_reify (EV_P) 3467periodics_reify (EV_P)
2089{ 3468{
2090 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
2091 3470
2092 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2093 { 3472 {
2094 int feed_count = 0;
2095
2096 do 3473 do
2097 { 3474 {
2098 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2099 3476
2100 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3477 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2109 ANHE_at_cache (periodics [HEAP0]); 3486 ANHE_at_cache (periodics [HEAP0]);
2110 downheap (periodics, periodiccnt, HEAP0); 3487 downheap (periodics, periodiccnt, HEAP0);
2111 } 3488 }
2112 else if (w->interval) 3489 else if (w->interval)
2113 { 3490 {
2114 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3491 periodic_recalc (EV_A_ w);
2115 /* if next trigger time is not sufficiently in the future, put it there */
2116 /* this might happen because of floating point inexactness */
2117 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2118 {
2119 ev_at (w) += w->interval;
2120
2121 /* if interval is unreasonably low we might still have a time in the past */
2122 /* so correct this. this will make the periodic very inexact, but the user */
2123 /* has effectively asked to get triggered more often than possible */
2124 if (ev_at (w) < ev_rt_now)
2125 ev_at (w) = ev_rt_now;
2126 }
2127
2128 ANHE_at_cache (periodics [HEAP0]); 3492 ANHE_at_cache (periodics [HEAP0]);
2129 downheap (periodics, periodiccnt, HEAP0); 3493 downheap (periodics, periodiccnt, HEAP0);
2130 } 3494 }
2131 else 3495 else
2132 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3496 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2139 feed_reverse_done (EV_A_ EV_PERIODIC); 3503 feed_reverse_done (EV_A_ EV_PERIODIC);
2140 } 3504 }
2141} 3505}
2142 3506
2143/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
2144/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3508/* TODO: maybe ensure that at least one event happens when jumping forward? */
2145static void noinline 3509ecb_noinline ecb_cold
3510static void
2146periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
2147{ 3512{
2148 int i; 3513 int i;
2149 3514
2150 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
2153 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3518 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2154 3519
2155 if (w->reschedule_cb) 3520 if (w->reschedule_cb)
2156 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3521 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2157 else if (w->interval) 3522 else if (w->interval)
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3523 periodic_recalc (EV_A_ w);
2159 3524
2160 ANHE_at_cache (periodics [i]); 3525 ANHE_at_cache (periodics [i]);
2161 } 3526 }
2162 3527
2163 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
2164} 3529}
2165#endif 3530#endif
2166 3531
2167/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
2168static void noinline 3533ecb_noinline ecb_cold
3534static void
2169timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
2170{ 3536{
2171 int i; 3537 int i;
2172 3538
2173 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
2182/* also detect if there was a timejump, and act accordingly */ 3548/* also detect if there was a timejump, and act accordingly */
2183inline_speed void 3549inline_speed void
2184time_update (EV_P_ ev_tstamp max_block) 3550time_update (EV_P_ ev_tstamp max_block)
2185{ 3551{
2186#if EV_USE_MONOTONIC 3552#if EV_USE_MONOTONIC
2187 if (expect_true (have_monotonic)) 3553 if (ecb_expect_true (have_monotonic))
2188 { 3554 {
2189 int i; 3555 int i;
2190 ev_tstamp odiff = rtmn_diff; 3556 ev_tstamp odiff = rtmn_diff;
2191 3557
2192 mn_now = get_clock (); 3558 mn_now = get_clock ();
2193 3559
2194 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3560 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2195 /* interpolate in the meantime */ 3561 /* interpolate in the meantime */
2196 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3562 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2197 { 3563 {
2198 ev_rt_now = rtmn_diff + mn_now; 3564 ev_rt_now = rtmn_diff + mn_now;
2199 return; 3565 return;
2200 } 3566 }
2201 3567
… …
2210 * doesn't hurt either as we only do this on time-jumps or 3576 * doesn't hurt either as we only do this on time-jumps or
2211 * in the unlikely event of having been preempted here. 3577 * in the unlikely event of having been preempted here.
2212 */ 3578 */
2213 for (i = 4; --i; ) 3579 for (i = 4; --i; )
2214 { 3580 {
3581 ev_tstamp diff;
2215 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
2216 3583
3584 diff = odiff - rtmn_diff;
3585
2217 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3586 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2218 return; /* all is well */ 3587 return; /* all is well */
2219 3588
2220 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
2221 mn_now = get_clock (); 3590 mn_now = get_clock ();
2222 now_floor = mn_now; 3591 now_floor = mn_now;
… …
2231 else 3600 else
2232#endif 3601#endif
2233 { 3602 {
2234 ev_rt_now = ev_time (); 3603 ev_rt_now = ev_time ();
2235 3604
2236 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3605 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2237 { 3606 {
2238 /* adjust timers. this is easy, as the offset is the same for all of them */ 3607 /* adjust timers. this is easy, as the offset is the same for all of them */
2239 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3608 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2240#if EV_PERIODIC_ENABLE 3609#if EV_PERIODIC_ENABLE
2241 periodics_reschedule (EV_A); 3610 periodics_reschedule (EV_A);
… …
2244 3613
2245 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2246 } 3615 }
2247} 3616}
2248 3617
2249void 3618int
2250ev_loop (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2251{ 3620{
2252#if EV_MINIMAL < 2 3621#if EV_FEATURE_API
2253 ++loop_depth; 3622 ++loop_depth;
2254#endif 3623#endif
2255 3624
2256 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3625 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2257 3626
2258 loop_done = EVUNLOOP_CANCEL; 3627 loop_done = EVBREAK_CANCEL;
2259 3628
2260 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3629 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2261 3630
2262 do 3631 do
2263 { 3632 {
2264#if EV_VERIFY >= 2 3633#if EV_VERIFY >= 2
2265 ev_loop_verify (EV_A); 3634 ev_verify (EV_A);
2266#endif 3635#endif
2267 3636
2268#ifndef _WIN32 3637#ifndef _WIN32
2269 if (expect_false (curpid)) /* penalise the forking check even more */ 3638 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2270 if (expect_false (getpid () != curpid)) 3639 if (ecb_expect_false (getpid () != curpid))
2271 { 3640 {
2272 curpid = getpid (); 3641 curpid = getpid ();
2273 postfork = 1; 3642 postfork = 1;
2274 } 3643 }
2275#endif 3644#endif
2276 3645
2277#if EV_FORK_ENABLE 3646#if EV_FORK_ENABLE
2278 /* we might have forked, so queue fork handlers */ 3647 /* we might have forked, so queue fork handlers */
2279 if (expect_false (postfork)) 3648 if (ecb_expect_false (postfork))
2280 if (forkcnt) 3649 if (forkcnt)
2281 { 3650 {
2282 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3651 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2283 EV_INVOKE_PENDING; 3652 EV_INVOKE_PENDING;
2284 } 3653 }
2285#endif 3654#endif
2286 3655
3656#if EV_PREPARE_ENABLE
2287 /* queue prepare watchers (and execute them) */ 3657 /* queue prepare watchers (and execute them) */
2288 if (expect_false (preparecnt)) 3658 if (ecb_expect_false (preparecnt))
2289 { 3659 {
2290 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3660 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2291 EV_INVOKE_PENDING; 3661 EV_INVOKE_PENDING;
2292 } 3662 }
3663#endif
2293 3664
2294 if (expect_false (loop_done)) 3665 if (ecb_expect_false (loop_done))
2295 break; 3666 break;
2296 3667
2297 /* we might have forked, so reify kernel state if necessary */ 3668 /* we might have forked, so reify kernel state if necessary */
2298 if (expect_false (postfork)) 3669 if (ecb_expect_false (postfork))
2299 loop_fork (EV_A); 3670 loop_fork (EV_A);
2300 3671
2301 /* update fd-related kernel structures */ 3672 /* update fd-related kernel structures */
2302 fd_reify (EV_A); 3673 fd_reify (EV_A);
2303 3674
2304 /* calculate blocking time */ 3675 /* calculate blocking time */
2305 { 3676 {
2306 ev_tstamp waittime = 0.; 3677 ev_tstamp waittime = 0.;
2307 ev_tstamp sleeptime = 0.; 3678 ev_tstamp sleeptime = 0.;
2308 3679
3680 /* remember old timestamp for io_blocktime calculation */
3681 ev_tstamp prev_mn_now = mn_now;
3682
3683 /* update time to cancel out callback processing overhead */
3684 time_update (EV_A_ 1e100);
3685
3686 /* from now on, we want a pipe-wake-up */
3687 pipe_write_wanted = 1;
3688
3689 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3690
2309 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3691 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2310 { 3692 {
2311 /* remember old timestamp for io_blocktime calculation */
2312 ev_tstamp prev_mn_now = mn_now;
2313
2314 /* update time to cancel out callback processing overhead */
2315 time_update (EV_A_ 1e100);
2316
2317 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
2318 3694
2319 if (timercnt) 3695 if (timercnt)
2320 { 3696 {
2321 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3697 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2322 if (waittime > to) waittime = to; 3698 if (waittime > to) waittime = to;
2323 } 3699 }
2324 3700
2325#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2326 if (periodiccnt) 3702 if (periodiccnt)
2327 { 3703 {
2328 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3704 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2329 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
2330 } 3706 }
2331#endif 3707#endif
2332 3708
2333 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
2334 if (expect_false (waittime < timeout_blocktime)) 3710 if (ecb_expect_false (waittime < timeout_blocktime))
2335 waittime = timeout_blocktime; 3711 waittime = timeout_blocktime;
2336 3712
3713 /* at this point, we NEED to wait, so we have to ensure */
3714 /* to pass a minimum nonzero value to the backend */
3715 if (ecb_expect_false (waittime < backend_mintime))
3716 waittime = backend_mintime;
3717
2337 /* extra check because io_blocktime is commonly 0 */ 3718 /* extra check because io_blocktime is commonly 0 */
2338 if (expect_false (io_blocktime)) 3719 if (ecb_expect_false (io_blocktime))
2339 { 3720 {
2340 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2341 3722
2342 if (sleeptime > waittime - backend_fudge) 3723 if (sleeptime > waittime - backend_mintime)
2343 sleeptime = waittime - backend_fudge; 3724 sleeptime = waittime - backend_mintime;
2344 3725
2345 if (expect_true (sleeptime > 0.)) 3726 if (ecb_expect_true (sleeptime > 0.))
2346 { 3727 {
2347 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
2348 waittime -= sleeptime; 3729 waittime -= sleeptime;
2349 } 3730 }
2350 } 3731 }
2351 } 3732 }
2352 3733
2353#if EV_MINIMAL < 2 3734#if EV_FEATURE_API
2354 ++loop_count; 3735 ++loop_count;
2355#endif 3736#endif
2356 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2357 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
2358 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3739 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3740
3741 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3742
3743 ECB_MEMORY_FENCE_ACQUIRE;
3744 if (pipe_write_skipped)
3745 {
3746 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3747 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3748 }
2359 3749
2360 /* update ev_rt_now, do magic */ 3750 /* update ev_rt_now, do magic */
2361 time_update (EV_A_ waittime + sleeptime); 3751 time_update (EV_A_ waittime + sleeptime);
2362 } 3752 }
2363 3753
… …
2370#if EV_IDLE_ENABLE 3760#if EV_IDLE_ENABLE
2371 /* queue idle watchers unless other events are pending */ 3761 /* queue idle watchers unless other events are pending */
2372 idle_reify (EV_A); 3762 idle_reify (EV_A);
2373#endif 3763#endif
2374 3764
3765#if EV_CHECK_ENABLE
2375 /* queue check watchers, to be executed first */ 3766 /* queue check watchers, to be executed first */
2376 if (expect_false (checkcnt)) 3767 if (ecb_expect_false (checkcnt))
2377 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3768 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3769#endif
2378 3770
2379 EV_INVOKE_PENDING; 3771 EV_INVOKE_PENDING;
2380 } 3772 }
2381 while (expect_true ( 3773 while (ecb_expect_true (
2382 activecnt 3774 activecnt
2383 && !loop_done 3775 && !loop_done
2384 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3776 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2385 )); 3777 ));
2386 3778
2387 if (loop_done == EVUNLOOP_ONE) 3779 if (loop_done == EVBREAK_ONE)
2388 loop_done = EVUNLOOP_CANCEL; 3780 loop_done = EVBREAK_CANCEL;
2389 3781
2390#if EV_MINIMAL < 2 3782#if EV_FEATURE_API
2391 --loop_depth; 3783 --loop_depth;
2392#endif 3784#endif
2393}
2394 3785
3786 return activecnt;
3787}
3788
2395void 3789void
2396ev_unloop (EV_P_ int how) 3790ev_break (EV_P_ int how) EV_NOEXCEPT
2397{ 3791{
2398 loop_done = how; 3792 loop_done = how;
2399} 3793}
2400 3794
2401void 3795void
2402ev_ref (EV_P) 3796ev_ref (EV_P) EV_NOEXCEPT
2403{ 3797{
2404 ++activecnt; 3798 ++activecnt;
2405} 3799}
2406 3800
2407void 3801void
2408ev_unref (EV_P) 3802ev_unref (EV_P) EV_NOEXCEPT
2409{ 3803{
2410 --activecnt; 3804 --activecnt;
2411} 3805}
2412 3806
2413void 3807void
2414ev_now_update (EV_P) 3808ev_now_update (EV_P) EV_NOEXCEPT
2415{ 3809{
2416 time_update (EV_A_ 1e100); 3810 time_update (EV_A_ 1e100);
2417} 3811}
2418 3812
2419void 3813void
2420ev_suspend (EV_P) 3814ev_suspend (EV_P) EV_NOEXCEPT
2421{ 3815{
2422 ev_now_update (EV_A); 3816 ev_now_update (EV_A);
2423} 3817}
2424 3818
2425void 3819void
2426ev_resume (EV_P) 3820ev_resume (EV_P) EV_NOEXCEPT
2427{ 3821{
2428 ev_tstamp mn_prev = mn_now; 3822 ev_tstamp mn_prev = mn_now;
2429 3823
2430 ev_now_update (EV_A); 3824 ev_now_update (EV_A);
2431 timers_reschedule (EV_A_ mn_now - mn_prev); 3825 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2448inline_size void 3842inline_size void
2449wlist_del (WL *head, WL elem) 3843wlist_del (WL *head, WL elem)
2450{ 3844{
2451 while (*head) 3845 while (*head)
2452 { 3846 {
2453 if (expect_true (*head == elem)) 3847 if (ecb_expect_true (*head == elem))
2454 { 3848 {
2455 *head = elem->next; 3849 *head = elem->next;
2456 break; 3850 break;
2457 } 3851 }
2458 3852
… …
2470 w->pending = 0; 3864 w->pending = 0;
2471 } 3865 }
2472} 3866}
2473 3867
2474int 3868int
2475ev_clear_pending (EV_P_ void *w) 3869ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2476{ 3870{
2477 W w_ = (W)w; 3871 W w_ = (W)w;
2478 int pending = w_->pending; 3872 int pending = w_->pending;
2479 3873
2480 if (expect_true (pending)) 3874 if (ecb_expect_true (pending))
2481 { 3875 {
2482 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3876 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2483 p->w = (W)&pending_w; 3877 p->w = (W)&pending_w;
2484 w_->pending = 0; 3878 w_->pending = 0;
2485 return p->events; 3879 return p->events;
… …
2512 w->active = 0; 3906 w->active = 0;
2513} 3907}
2514 3908
2515/*****************************************************************************/ 3909/*****************************************************************************/
2516 3910
2517void noinline 3911ecb_noinline
3912void
2518ev_io_start (EV_P_ ev_io *w) 3913ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2519{ 3914{
2520 int fd = w->fd; 3915 int fd = w->fd;
2521 3916
2522 if (expect_false (ev_is_active (w))) 3917 if (ecb_expect_false (ev_is_active (w)))
2523 return; 3918 return;
2524 3919
2525 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3920 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2526 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3921 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2527 3922
3923#if EV_VERIFY >= 2
3924 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3925#endif
2528 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
2529 3927
2530 ev_start (EV_A_ (W)w, 1); 3928 ev_start (EV_A_ (W)w, 1);
2531 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3929 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2532 wlist_add (&anfds[fd].head, (WL)w); 3930 wlist_add (&anfds[fd].head, (WL)w);
3931
3932 /* common bug, apparently */
3933 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2533 3934
2534 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3935 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2535 w->events &= ~EV__IOFDSET; 3936 w->events &= ~EV__IOFDSET;
2536 3937
2537 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
2538} 3939}
2539 3940
2540void noinline 3941ecb_noinline
3942void
2541ev_io_stop (EV_P_ ev_io *w) 3943ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2542{ 3944{
2543 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
2544 if (expect_false (!ev_is_active (w))) 3946 if (ecb_expect_false (!ev_is_active (w)))
2545 return; 3947 return;
2546 3948
2547 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3949 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2548 3950
3951#if EV_VERIFY >= 2
3952 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3953#endif
2549 EV_FREQUENT_CHECK; 3954 EV_FREQUENT_CHECK;
2550 3955
2551 wlist_del (&anfds[w->fd].head, (WL)w); 3956 wlist_del (&anfds[w->fd].head, (WL)w);
2552 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
2553 3958
2554 fd_change (EV_A_ w->fd, 1); 3959 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2555 3960
2556 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
2557} 3962}
2558 3963
2559void noinline 3964ecb_noinline
3965void
2560ev_timer_start (EV_P_ ev_timer *w) 3966ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2561{ 3967{
2562 if (expect_false (ev_is_active (w))) 3968 if (ecb_expect_false (ev_is_active (w)))
2563 return; 3969 return;
2564 3970
2565 ev_at (w) += mn_now; 3971 ev_at (w) += mn_now;
2566 3972
2567 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3973 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2568 3974
2569 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
2570 3976
2571 ++timercnt; 3977 ++timercnt;
2572 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3978 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2573 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3979 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2574 ANHE_w (timers [ev_active (w)]) = (WT)w; 3980 ANHE_w (timers [ev_active (w)]) = (WT)w;
2575 ANHE_at_cache (timers [ev_active (w)]); 3981 ANHE_at_cache (timers [ev_active (w)]);
2576 upheap (timers, ev_active (w)); 3982 upheap (timers, ev_active (w));
2577 3983
2578 EV_FREQUENT_CHECK; 3984 EV_FREQUENT_CHECK;
2579 3985
2580 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3986 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2581} 3987}
2582 3988
2583void noinline 3989ecb_noinline
3990void
2584ev_timer_stop (EV_P_ ev_timer *w) 3991ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2585{ 3992{
2586 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
2587 if (expect_false (!ev_is_active (w))) 3994 if (ecb_expect_false (!ev_is_active (w)))
2588 return; 3995 return;
2589 3996
2590 EV_FREQUENT_CHECK; 3997 EV_FREQUENT_CHECK;
2591 3998
2592 { 3999 {
… …
2594 4001
2595 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4002 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2596 4003
2597 --timercnt; 4004 --timercnt;
2598 4005
2599 if (expect_true (active < timercnt + HEAP0)) 4006 if (ecb_expect_true (active < timercnt + HEAP0))
2600 { 4007 {
2601 timers [active] = timers [timercnt + HEAP0]; 4008 timers [active] = timers [timercnt + HEAP0];
2602 adjustheap (timers, timercnt, active); 4009 adjustheap (timers, timercnt, active);
2603 } 4010 }
2604 } 4011 }
… …
2608 ev_stop (EV_A_ (W)w); 4015 ev_stop (EV_A_ (W)w);
2609 4016
2610 EV_FREQUENT_CHECK; 4017 EV_FREQUENT_CHECK;
2611} 4018}
2612 4019
2613void noinline 4020ecb_noinline
4021void
2614ev_timer_again (EV_P_ ev_timer *w) 4022ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2615{ 4023{
2616 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
4025
4026 clear_pending (EV_A_ (W)w);
2617 4027
2618 if (ev_is_active (w)) 4028 if (ev_is_active (w))
2619 { 4029 {
2620 if (w->repeat) 4030 if (w->repeat)
2621 { 4031 {
… …
2634 4044
2635 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2636} 4046}
2637 4047
2638ev_tstamp 4048ev_tstamp
2639ev_timer_remaining (EV_P_ ev_timer *w) 4049ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2640{ 4050{
2641 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4051 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2642} 4052}
2643 4053
2644#if EV_PERIODIC_ENABLE 4054#if EV_PERIODIC_ENABLE
2645void noinline 4055ecb_noinline
4056void
2646ev_periodic_start (EV_P_ ev_periodic *w) 4057ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2647{ 4058{
2648 if (expect_false (ev_is_active (w))) 4059 if (ecb_expect_false (ev_is_active (w)))
2649 return; 4060 return;
2650 4061
2651 if (w->reschedule_cb) 4062 if (w->reschedule_cb)
2652 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4063 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2653 else if (w->interval) 4064 else if (w->interval)
2654 { 4065 {
2655 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4066 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2656 /* this formula differs from the one in periodic_reify because we do not always round up */ 4067 periodic_recalc (EV_A_ w);
2657 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2658 } 4068 }
2659 else 4069 else
2660 ev_at (w) = w->offset; 4070 ev_at (w) = w->offset;
2661 4071
2662 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
2663 4073
2664 ++periodiccnt; 4074 ++periodiccnt;
2665 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4075 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2666 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4076 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2667 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4077 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2668 ANHE_at_cache (periodics [ev_active (w)]); 4078 ANHE_at_cache (periodics [ev_active (w)]);
2669 upheap (periodics, ev_active (w)); 4079 upheap (periodics, ev_active (w));
2670 4080
2671 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
2672 4082
2673 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4083 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2674} 4084}
2675 4085
2676void noinline 4086ecb_noinline
4087void
2677ev_periodic_stop (EV_P_ ev_periodic *w) 4088ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2678{ 4089{
2679 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
2680 if (expect_false (!ev_is_active (w))) 4091 if (ecb_expect_false (!ev_is_active (w)))
2681 return; 4092 return;
2682 4093
2683 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2684 4095
2685 { 4096 {
… …
2687 4098
2688 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4099 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2689 4100
2690 --periodiccnt; 4101 --periodiccnt;
2691 4102
2692 if (expect_true (active < periodiccnt + HEAP0)) 4103 if (ecb_expect_true (active < periodiccnt + HEAP0))
2693 { 4104 {
2694 periodics [active] = periodics [periodiccnt + HEAP0]; 4105 periodics [active] = periodics [periodiccnt + HEAP0];
2695 adjustheap (periodics, periodiccnt, active); 4106 adjustheap (periodics, periodiccnt, active);
2696 } 4107 }
2697 } 4108 }
… …
2699 ev_stop (EV_A_ (W)w); 4110 ev_stop (EV_A_ (W)w);
2700 4111
2701 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
2702} 4113}
2703 4114
2704void noinline 4115ecb_noinline
4116void
2705ev_periodic_again (EV_P_ ev_periodic *w) 4117ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2706{ 4118{
2707 /* TODO: use adjustheap and recalculation */ 4119 /* TODO: use adjustheap and recalculation */
2708 ev_periodic_stop (EV_A_ w); 4120 ev_periodic_stop (EV_A_ w);
2709 ev_periodic_start (EV_A_ w); 4121 ev_periodic_start (EV_A_ w);
2710} 4122}
… …
2712 4124
2713#ifndef SA_RESTART 4125#ifndef SA_RESTART
2714# define SA_RESTART 0 4126# define SA_RESTART 0
2715#endif 4127#endif
2716 4128
2717void noinline 4129#if EV_SIGNAL_ENABLE
4130
4131ecb_noinline
4132void
2718ev_signal_start (EV_P_ ev_signal *w) 4133ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2719{ 4134{
2720 if (expect_false (ev_is_active (w))) 4135 if (ecb_expect_false (ev_is_active (w)))
2721 return; 4136 return;
2722 4137
2723 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4138 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2724 4139
2725#if EV_MULTIPLICITY 4140#if EV_MULTIPLICITY
2726 assert (("libev: a signal must not be attached to two different loops", 4141 assert (("libev: a signal must not be attached to two different loops",
2727 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4142 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2728 4143
2729 signals [w->signum - 1].loop = EV_A; 4144 signals [w->signum - 1].loop = EV_A;
4145 ECB_MEMORY_FENCE_RELEASE;
2730#endif 4146#endif
2731 4147
2732 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
2733 4149
2734#if EV_USE_SIGNALFD 4150#if EV_USE_SIGNALFD
… …
2781 sa.sa_handler = ev_sighandler; 4197 sa.sa_handler = ev_sighandler;
2782 sigfillset (&sa.sa_mask); 4198 sigfillset (&sa.sa_mask);
2783 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4199 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2784 sigaction (w->signum, &sa, 0); 4200 sigaction (w->signum, &sa, 0);
2785 4201
4202 if (origflags & EVFLAG_NOSIGMASK)
4203 {
2786 sigemptyset (&sa.sa_mask); 4204 sigemptyset (&sa.sa_mask);
2787 sigaddset (&sa.sa_mask, w->signum); 4205 sigaddset (&sa.sa_mask, w->signum);
2788 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4206 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4207 }
2789#endif 4208#endif
2790 } 4209 }
2791 4210
2792 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
2793} 4212}
2794 4213
2795void noinline 4214ecb_noinline
4215void
2796ev_signal_stop (EV_P_ ev_signal *w) 4216ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2797{ 4217{
2798 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2799 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2800 return; 4220 return;
2801 4221
2802 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2803 4223
2804 wlist_del (&signals [w->signum - 1].head, (WL)w); 4224 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2827 } 4247 }
2828 4248
2829 EV_FREQUENT_CHECK; 4249 EV_FREQUENT_CHECK;
2830} 4250}
2831 4251
4252#endif
4253
4254#if EV_CHILD_ENABLE
4255
2832void 4256void
2833ev_child_start (EV_P_ ev_child *w) 4257ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2834{ 4258{
2835#if EV_MULTIPLICITY 4259#if EV_MULTIPLICITY
2836 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4260 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2837#endif 4261#endif
2838 if (expect_false (ev_is_active (w))) 4262 if (ecb_expect_false (ev_is_active (w)))
2839 return; 4263 return;
2840 4264
2841 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
2842 4266
2843 ev_start (EV_A_ (W)w, 1); 4267 ev_start (EV_A_ (W)w, 1);
2844 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4268 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2845 4269
2846 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
2847} 4271}
2848 4272
2849void 4273void
2850ev_child_stop (EV_P_ ev_child *w) 4274ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2851{ 4275{
2852 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
2853 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
2854 return; 4278 return;
2855 4279
2856 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
2857 4281
2858 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4282 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2859 ev_stop (EV_A_ (W)w); 4283 ev_stop (EV_A_ (W)w);
2860 4284
2861 EV_FREQUENT_CHECK; 4285 EV_FREQUENT_CHECK;
2862} 4286}
4287
4288#endif
2863 4289
2864#if EV_STAT_ENABLE 4290#if EV_STAT_ENABLE
2865 4291
2866# ifdef _WIN32 4292# ifdef _WIN32
2867# undef lstat 4293# undef lstat
… …
2870 4296
2871#define DEF_STAT_INTERVAL 5.0074891 4297#define DEF_STAT_INTERVAL 5.0074891
2872#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4298#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2873#define MIN_STAT_INTERVAL 0.1074891 4299#define MIN_STAT_INTERVAL 0.1074891
2874 4300
2875static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4301ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2876 4302
2877#if EV_USE_INOTIFY 4303#if EV_USE_INOTIFY
2878 4304
2879/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4305/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2880# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4306# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2881 4307
2882static void noinline 4308ecb_noinline
4309static void
2883infy_add (EV_P_ ev_stat *w) 4310infy_add (EV_P_ ev_stat *w)
2884{ 4311{
2885 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); 4312 w->wd = inotify_add_watch (fs_fd, w->path,
4313 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4314 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4315 | IN_DONT_FOLLOW | IN_MASK_ADD);
2886 4316
2887 if (w->wd >= 0) 4317 if (w->wd >= 0)
2888 { 4318 {
2889 struct statfs sfs; 4319 struct statfs sfs;
2890 4320
… …
2894 4324
2895 if (!fs_2625) 4325 if (!fs_2625)
2896 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4326 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2897 else if (!statfs (w->path, &sfs) 4327 else if (!statfs (w->path, &sfs)
2898 && (sfs.f_type == 0x1373 /* devfs */ 4328 && (sfs.f_type == 0x1373 /* devfs */
4329 || sfs.f_type == 0x4006 /* fat */
4330 || sfs.f_type == 0x4d44 /* msdos */
2899 || sfs.f_type == 0xEF53 /* ext2/3 */ 4331 || sfs.f_type == 0xEF53 /* ext2/3 */
4332 || sfs.f_type == 0x72b6 /* jffs2 */
4333 || sfs.f_type == 0x858458f6 /* ramfs */
4334 || sfs.f_type == 0x5346544e /* ntfs */
2900 || sfs.f_type == 0x3153464a /* jfs */ 4335 || sfs.f_type == 0x3153464a /* jfs */
4336 || sfs.f_type == 0x9123683e /* btrfs */
2901 || sfs.f_type == 0x52654973 /* reiser3 */ 4337 || sfs.f_type == 0x52654973 /* reiser3 */
2902 || sfs.f_type == 0x01021994 /* tempfs */ 4338 || sfs.f_type == 0x01021994 /* tmpfs */
2903 || sfs.f_type == 0x58465342 /* xfs */)) 4339 || sfs.f_type == 0x58465342 /* xfs */))
2904 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4340 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2905 else 4341 else
2906 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4342 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2907 } 4343 }
… …
2928 if (!pend || pend == path) 4364 if (!pend || pend == path)
2929 break; 4365 break;
2930 4366
2931 *pend = 0; 4367 *pend = 0;
2932 w->wd = inotify_add_watch (fs_fd, path, mask); 4368 w->wd = inotify_add_watch (fs_fd, path, mask);
2933 } 4369 }
2934 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4370 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2935 } 4371 }
2936 } 4372 }
2937 4373
2938 if (w->wd >= 0) 4374 if (w->wd >= 0)
2939 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4375 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2940 4376
2941 /* now re-arm timer, if required */ 4377 /* now re-arm timer, if required */
2942 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4378 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2943 ev_timer_again (EV_A_ &w->timer); 4379 ev_timer_again (EV_A_ &w->timer);
2944 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4380 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2945} 4381}
2946 4382
2947static void noinline 4383ecb_noinline
4384static void
2948infy_del (EV_P_ ev_stat *w) 4385infy_del (EV_P_ ev_stat *w)
2949{ 4386{
2950 int slot; 4387 int slot;
2951 int wd = w->wd; 4388 int wd = w->wd;
2952 4389
2953 if (wd < 0) 4390 if (wd < 0)
2954 return; 4391 return;
2955 4392
2956 w->wd = -2; 4393 w->wd = -2;
2957 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4394 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2958 wlist_del (&fs_hash [slot].head, (WL)w); 4395 wlist_del (&fs_hash [slot].head, (WL)w);
2959 4396
2960 /* remove this watcher, if others are watching it, they will rearm */ 4397 /* remove this watcher, if others are watching it, they will rearm */
2961 inotify_rm_watch (fs_fd, wd); 4398 inotify_rm_watch (fs_fd, wd);
2962} 4399}
2963 4400
2964static void noinline 4401ecb_noinline
4402static void
2965infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4403infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2966{ 4404{
2967 if (slot < 0) 4405 if (slot < 0)
2968 /* overflow, need to check for all hash slots */ 4406 /* overflow, need to check for all hash slots */
2969 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4407 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2970 infy_wd (EV_A_ slot, wd, ev); 4408 infy_wd (EV_A_ slot, wd, ev);
2971 else 4409 else
2972 { 4410 {
2973 WL w_; 4411 WL w_;
2974 4412
2975 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4413 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2976 { 4414 {
2977 ev_stat *w = (ev_stat *)w_; 4415 ev_stat *w = (ev_stat *)w_;
2978 w_ = w_->next; /* lets us remove this watcher and all before it */ 4416 w_ = w_->next; /* lets us remove this watcher and all before it */
2979 4417
2980 if (w->wd == wd || wd == -1) 4418 if (w->wd == wd || wd == -1)
2981 { 4419 {
2982 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4420 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2983 { 4421 {
2984 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4422 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2985 w->wd = -1; 4423 w->wd = -1;
2986 infy_add (EV_A_ w); /* re-add, no matter what */ 4424 infy_add (EV_A_ w); /* re-add, no matter what */
2987 } 4425 }
2988 4426
2989 stat_timer_cb (EV_A_ &w->timer, 0); 4427 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3005 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4443 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3006 ofs += sizeof (struct inotify_event) + ev->len; 4444 ofs += sizeof (struct inotify_event) + ev->len;
3007 } 4445 }
3008} 4446}
3009 4447
3010inline_size unsigned int
3011ev_linux_version (void)
3012{
3013 struct utsname buf;
3014 unsigned int v;
3015 int i;
3016 char *p = buf.release;
3017
3018 if (uname (&buf))
3019 return 0;
3020
3021 for (i = 3+1; --i; )
3022 {
3023 unsigned int c = 0;
3024
3025 for (;;)
3026 {
3027 if (*p >= '0' && *p <= '9')
3028 c = c * 10 + *p++ - '0';
3029 else
3030 {
3031 p += *p == '.';
3032 break;
3033 }
3034 }
3035
3036 v = (v << 8) | c;
3037 }
3038
3039 return v;
3040}
3041
3042inline_size void 4448inline_size ecb_cold
4449void
3043ev_check_2625 (EV_P) 4450ev_check_2625 (EV_P)
3044{ 4451{
3045 /* kernels < 2.6.25 are borked 4452 /* kernels < 2.6.25 are borked
3046 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4453 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3047 */ 4454 */
… …
3052} 4459}
3053 4460
3054inline_size int 4461inline_size int
3055infy_newfd (void) 4462infy_newfd (void)
3056{ 4463{
3057#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4464#if defined IN_CLOEXEC && defined IN_NONBLOCK
3058 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4465 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3059 if (fd >= 0) 4466 if (fd >= 0)
3060 return fd; 4467 return fd;
3061#endif 4468#endif
3062 return inotify_init (); 4469 return inotify_init ();
… …
3103 ev_io_set (&fs_w, fs_fd, EV_READ); 4510 ev_io_set (&fs_w, fs_fd, EV_READ);
3104 ev_io_start (EV_A_ &fs_w); 4511 ev_io_start (EV_A_ &fs_w);
3105 ev_unref (EV_A); 4512 ev_unref (EV_A);
3106 } 4513 }
3107 4514
3108 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4515 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3109 { 4516 {
3110 WL w_ = fs_hash [slot].head; 4517 WL w_ = fs_hash [slot].head;
3111 fs_hash [slot].head = 0; 4518 fs_hash [slot].head = 0;
3112 4519
3113 while (w_) 4520 while (w_)
… …
3137#else 4544#else
3138# define EV_LSTAT(p,b) lstat (p, b) 4545# define EV_LSTAT(p,b) lstat (p, b)
3139#endif 4546#endif
3140 4547
3141void 4548void
3142ev_stat_stat (EV_P_ ev_stat *w) 4549ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3143{ 4550{
3144 if (lstat (w->path, &w->attr) < 0) 4551 if (lstat (w->path, &w->attr) < 0)
3145 w->attr.st_nlink = 0; 4552 w->attr.st_nlink = 0;
3146 else if (!w->attr.st_nlink) 4553 else if (!w->attr.st_nlink)
3147 w->attr.st_nlink = 1; 4554 w->attr.st_nlink = 1;
3148} 4555}
3149 4556
3150static void noinline 4557ecb_noinline
4558static void
3151stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4559stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3152{ 4560{
3153 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4561 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3154 4562
3155 ev_statdata prev = w->attr; 4563 ev_statdata prev = w->attr;
… …
3186 ev_feed_event (EV_A_ w, EV_STAT); 4594 ev_feed_event (EV_A_ w, EV_STAT);
3187 } 4595 }
3188} 4596}
3189 4597
3190void 4598void
3191ev_stat_start (EV_P_ ev_stat *w) 4599ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3192{ 4600{
3193 if (expect_false (ev_is_active (w))) 4601 if (ecb_expect_false (ev_is_active (w)))
3194 return; 4602 return;
3195 4603
3196 ev_stat_stat (EV_A_ w); 4604 ev_stat_stat (EV_A_ w);
3197 4605
3198 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4606 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3217 4625
3218 EV_FREQUENT_CHECK; 4626 EV_FREQUENT_CHECK;
3219} 4627}
3220 4628
3221void 4629void
3222ev_stat_stop (EV_P_ ev_stat *w) 4630ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3223{ 4631{
3224 clear_pending (EV_A_ (W)w); 4632 clear_pending (EV_A_ (W)w);
3225 if (expect_false (!ev_is_active (w))) 4633 if (ecb_expect_false (!ev_is_active (w)))
3226 return; 4634 return;
3227 4635
3228 EV_FREQUENT_CHECK; 4636 EV_FREQUENT_CHECK;
3229 4637
3230#if EV_USE_INOTIFY 4638#if EV_USE_INOTIFY
… …
3243} 4651}
3244#endif 4652#endif
3245 4653
3246#if EV_IDLE_ENABLE 4654#if EV_IDLE_ENABLE
3247void 4655void
3248ev_idle_start (EV_P_ ev_idle *w) 4656ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3249{ 4657{
3250 if (expect_false (ev_is_active (w))) 4658 if (ecb_expect_false (ev_is_active (w)))
3251 return; 4659 return;
3252 4660
3253 pri_adjust (EV_A_ (W)w); 4661 pri_adjust (EV_A_ (W)w);
3254 4662
3255 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
… …
3258 int active = ++idlecnt [ABSPRI (w)]; 4666 int active = ++idlecnt [ABSPRI (w)];
3259 4667
3260 ++idleall; 4668 ++idleall;
3261 ev_start (EV_A_ (W)w, active); 4669 ev_start (EV_A_ (W)w, active);
3262 4670
3263 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4671 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3264 idles [ABSPRI (w)][active - 1] = w; 4672 idles [ABSPRI (w)][active - 1] = w;
3265 } 4673 }
3266 4674
3267 EV_FREQUENT_CHECK; 4675 EV_FREQUENT_CHECK;
3268} 4676}
3269 4677
3270void 4678void
3271ev_idle_stop (EV_P_ ev_idle *w) 4679ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3272{ 4680{
3273 clear_pending (EV_A_ (W)w); 4681 clear_pending (EV_A_ (W)w);
3274 if (expect_false (!ev_is_active (w))) 4682 if (ecb_expect_false (!ev_is_active (w)))
3275 return; 4683 return;
3276 4684
3277 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
3278 4686
3279 { 4687 {
… …
3288 4696
3289 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
3290} 4698}
3291#endif 4699#endif
3292 4700
4701#if EV_PREPARE_ENABLE
3293void 4702void
3294ev_prepare_start (EV_P_ ev_prepare *w) 4703ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3295{ 4704{
3296 if (expect_false (ev_is_active (w))) 4705 if (ecb_expect_false (ev_is_active (w)))
3297 return; 4706 return;
3298 4707
3299 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
3300 4709
3301 ev_start (EV_A_ (W)w, ++preparecnt); 4710 ev_start (EV_A_ (W)w, ++preparecnt);
3302 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4711 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3303 prepares [preparecnt - 1] = w; 4712 prepares [preparecnt - 1] = w;
3304 4713
3305 EV_FREQUENT_CHECK; 4714 EV_FREQUENT_CHECK;
3306} 4715}
3307 4716
3308void 4717void
3309ev_prepare_stop (EV_P_ ev_prepare *w) 4718ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3310{ 4719{
3311 clear_pending (EV_A_ (W)w); 4720 clear_pending (EV_A_ (W)w);
3312 if (expect_false (!ev_is_active (w))) 4721 if (ecb_expect_false (!ev_is_active (w)))
3313 return; 4722 return;
3314 4723
3315 EV_FREQUENT_CHECK; 4724 EV_FREQUENT_CHECK;
3316 4725
3317 { 4726 {
… …
3323 4732
3324 ev_stop (EV_A_ (W)w); 4733 ev_stop (EV_A_ (W)w);
3325 4734
3326 EV_FREQUENT_CHECK; 4735 EV_FREQUENT_CHECK;
3327} 4736}
4737#endif
3328 4738
4739#if EV_CHECK_ENABLE
3329void 4740void
3330ev_check_start (EV_P_ ev_check *w) 4741ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3331{ 4742{
3332 if (expect_false (ev_is_active (w))) 4743 if (ecb_expect_false (ev_is_active (w)))
3333 return; 4744 return;
3334 4745
3335 EV_FREQUENT_CHECK; 4746 EV_FREQUENT_CHECK;
3336 4747
3337 ev_start (EV_A_ (W)w, ++checkcnt); 4748 ev_start (EV_A_ (W)w, ++checkcnt);
3338 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4749 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3339 checks [checkcnt - 1] = w; 4750 checks [checkcnt - 1] = w;
3340 4751
3341 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
3342} 4753}
3343 4754
3344void 4755void
3345ev_check_stop (EV_P_ ev_check *w) 4756ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3346{ 4757{
3347 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
3348 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
3349 return; 4760 return;
3350 4761
3351 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
3352 4763
3353 { 4764 {
… …
3359 4770
3360 ev_stop (EV_A_ (W)w); 4771 ev_stop (EV_A_ (W)w);
3361 4772
3362 EV_FREQUENT_CHECK; 4773 EV_FREQUENT_CHECK;
3363} 4774}
4775#endif
3364 4776
3365#if EV_EMBED_ENABLE 4777#if EV_EMBED_ENABLE
3366void noinline 4778ecb_noinline
4779void
3367ev_embed_sweep (EV_P_ ev_embed *w) 4780ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3368{ 4781{
3369 ev_loop (w->other, EVLOOP_NONBLOCK); 4782 ev_run (w->other, EVRUN_NOWAIT);
3370} 4783}
3371 4784
3372static void 4785static void
3373embed_io_cb (EV_P_ ev_io *io, int revents) 4786embed_io_cb (EV_P_ ev_io *io, int revents)
3374{ 4787{
3375 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4788 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3376 4789
3377 if (ev_cb (w)) 4790 if (ev_cb (w))
3378 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4791 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3379 else 4792 else
3380 ev_loop (w->other, EVLOOP_NONBLOCK); 4793 ev_run (w->other, EVRUN_NOWAIT);
3381} 4794}
3382 4795
3383static void 4796static void
3384embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4797embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3385{ 4798{
… …
3389 EV_P = w->other; 4802 EV_P = w->other;
3390 4803
3391 while (fdchangecnt) 4804 while (fdchangecnt)
3392 { 4805 {
3393 fd_reify (EV_A); 4806 fd_reify (EV_A);
3394 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4807 ev_run (EV_A_ EVRUN_NOWAIT);
3395 } 4808 }
3396 } 4809 }
3397} 4810}
3398 4811
3399static void 4812static void
… …
3405 4818
3406 { 4819 {
3407 EV_P = w->other; 4820 EV_P = w->other;
3408 4821
3409 ev_loop_fork (EV_A); 4822 ev_loop_fork (EV_A);
3410 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4823 ev_run (EV_A_ EVRUN_NOWAIT);
3411 } 4824 }
3412 4825
3413 ev_embed_start (EV_A_ w); 4826 ev_embed_start (EV_A_ w);
3414} 4827}
3415 4828
… …
3420 ev_idle_stop (EV_A_ idle); 4833 ev_idle_stop (EV_A_ idle);
3421} 4834}
3422#endif 4835#endif
3423 4836
3424void 4837void
3425ev_embed_start (EV_P_ ev_embed *w) 4838ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3426{ 4839{
3427 if (expect_false (ev_is_active (w))) 4840 if (ecb_expect_false (ev_is_active (w)))
3428 return; 4841 return;
3429 4842
3430 { 4843 {
3431 EV_P = w->other; 4844 EV_P = w->other;
3432 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4845 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3451 4864
3452 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
3453} 4866}
3454 4867
3455void 4868void
3456ev_embed_stop (EV_P_ ev_embed *w) 4869ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3457{ 4870{
3458 clear_pending (EV_A_ (W)w); 4871 clear_pending (EV_A_ (W)w);
3459 if (expect_false (!ev_is_active (w))) 4872 if (ecb_expect_false (!ev_is_active (w)))
3460 return; 4873 return;
3461 4874
3462 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
3463 4876
3464 ev_io_stop (EV_A_ &w->io); 4877 ev_io_stop (EV_A_ &w->io);
… …
3471} 4884}
3472#endif 4885#endif
3473 4886
3474#if EV_FORK_ENABLE 4887#if EV_FORK_ENABLE
3475void 4888void
3476ev_fork_start (EV_P_ ev_fork *w) 4889ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3477{ 4890{
3478 if (expect_false (ev_is_active (w))) 4891 if (ecb_expect_false (ev_is_active (w)))
3479 return; 4892 return;
3480 4893
3481 EV_FREQUENT_CHECK; 4894 EV_FREQUENT_CHECK;
3482 4895
3483 ev_start (EV_A_ (W)w, ++forkcnt); 4896 ev_start (EV_A_ (W)w, ++forkcnt);
3484 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4897 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3485 forks [forkcnt - 1] = w; 4898 forks [forkcnt - 1] = w;
3486 4899
3487 EV_FREQUENT_CHECK; 4900 EV_FREQUENT_CHECK;
3488} 4901}
3489 4902
3490void 4903void
3491ev_fork_stop (EV_P_ ev_fork *w) 4904ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3492{ 4905{
3493 clear_pending (EV_A_ (W)w); 4906 clear_pending (EV_A_ (W)w);
3494 if (expect_false (!ev_is_active (w))) 4907 if (ecb_expect_false (!ev_is_active (w)))
3495 return; 4908 return;
3496 4909
3497 EV_FREQUENT_CHECK; 4910 EV_FREQUENT_CHECK;
3498 4911
3499 { 4912 {
… …
3507 4920
3508 EV_FREQUENT_CHECK; 4921 EV_FREQUENT_CHECK;
3509} 4922}
3510#endif 4923#endif
3511 4924
4925#if EV_CLEANUP_ENABLE
4926void
4927ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4928{
4929 if (ecb_expect_false (ev_is_active (w)))
4930 return;
4931
4932 EV_FREQUENT_CHECK;
4933
4934 ev_start (EV_A_ (W)w, ++cleanupcnt);
4935 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4936 cleanups [cleanupcnt - 1] = w;
4937
4938 /* cleanup watchers should never keep a refcount on the loop */
4939 ev_unref (EV_A);
4940 EV_FREQUENT_CHECK;
4941}
4942
4943void
4944ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4945{
4946 clear_pending (EV_A_ (W)w);
4947 if (ecb_expect_false (!ev_is_active (w)))
4948 return;
4949
4950 EV_FREQUENT_CHECK;
4951 ev_ref (EV_A);
4952
4953 {
4954 int active = ev_active (w);
4955
4956 cleanups [active - 1] = cleanups [--cleanupcnt];
4957 ev_active (cleanups [active - 1]) = active;
4958 }
4959
4960 ev_stop (EV_A_ (W)w);
4961
4962 EV_FREQUENT_CHECK;
4963}
4964#endif
4965
3512#if EV_ASYNC_ENABLE 4966#if EV_ASYNC_ENABLE
3513void 4967void
3514ev_async_start (EV_P_ ev_async *w) 4968ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3515{ 4969{
3516 if (expect_false (ev_is_active (w))) 4970 if (ecb_expect_false (ev_is_active (w)))
3517 return; 4971 return;
3518 4972
4973 w->sent = 0;
4974
3519 evpipe_init (EV_A); 4975 evpipe_init (EV_A);
3520 4976
3521 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3522 4978
3523 ev_start (EV_A_ (W)w, ++asynccnt); 4979 ev_start (EV_A_ (W)w, ++asynccnt);
3524 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4980 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3525 asyncs [asynccnt - 1] = w; 4981 asyncs [asynccnt - 1] = w;
3526 4982
3527 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
3528} 4984}
3529 4985
3530void 4986void
3531ev_async_stop (EV_P_ ev_async *w) 4987ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3532{ 4988{
3533 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
3534 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
3535 return; 4991 return;
3536 4992
3537 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3538 4994
3539 { 4995 {
… …
3547 5003
3548 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
3549} 5005}
3550 5006
3551void 5007void
3552ev_async_send (EV_P_ ev_async *w) 5008ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3553{ 5009{
3554 w->sent = 1; 5010 w->sent = 1;
3555 evpipe_write (EV_A_ &async_pending); 5011 evpipe_write (EV_A_ &async_pending);
3556} 5012}
3557#endif 5013#endif
… …
3594 5050
3595 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5051 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3596} 5052}
3597 5053
3598void 5054void
3599ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5055ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3600{ 5056{
3601 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5057 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3602
3603 if (expect_false (!once))
3604 {
3605 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3606 return;
3607 }
3608 5058
3609 once->cb = cb; 5059 once->cb = cb;
3610 once->arg = arg; 5060 once->arg = arg;
3611 5061
3612 ev_init (&once->io, once_cb_io); 5062 ev_init (&once->io, once_cb_io);
… …
3625} 5075}
3626 5076
3627/*****************************************************************************/ 5077/*****************************************************************************/
3628 5078
3629#if EV_WALK_ENABLE 5079#if EV_WALK_ENABLE
5080ecb_cold
3630void 5081void
3631ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5082ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3632{ 5083{
3633 int i, j; 5084 int i, j;
3634 ev_watcher_list *wl, *wn; 5085 ev_watcher_list *wl, *wn;
3635 5086
3636 if (types & (EV_IO | EV_EMBED)) 5087 if (types & (EV_IO | EV_EMBED))
… …
3679 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5130 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3680#endif 5131#endif
3681 5132
3682#if EV_IDLE_ENABLE 5133#if EV_IDLE_ENABLE
3683 if (types & EV_IDLE) 5134 if (types & EV_IDLE)
3684 for (j = NUMPRI; i--; ) 5135 for (j = NUMPRI; j--; )
3685 for (i = idlecnt [j]; i--; ) 5136 for (i = idlecnt [j]; i--; )
3686 cb (EV_A_ EV_IDLE, idles [j][i]); 5137 cb (EV_A_ EV_IDLE, idles [j][i]);
3687#endif 5138#endif
3688 5139
3689#if EV_FORK_ENABLE 5140#if EV_FORK_ENABLE
… …
3697 if (types & EV_ASYNC) 5148 if (types & EV_ASYNC)
3698 for (i = asynccnt; i--; ) 5149 for (i = asynccnt; i--; )
3699 cb (EV_A_ EV_ASYNC, asyncs [i]); 5150 cb (EV_A_ EV_ASYNC, asyncs [i]);
3700#endif 5151#endif
3701 5152
5153#if EV_PREPARE_ENABLE
3702 if (types & EV_PREPARE) 5154 if (types & EV_PREPARE)
3703 for (i = preparecnt; i--; ) 5155 for (i = preparecnt; i--; )
3704#if EV_EMBED_ENABLE 5156# if EV_EMBED_ENABLE
3705 if (ev_cb (prepares [i]) != embed_prepare_cb) 5157 if (ev_cb (prepares [i]) != embed_prepare_cb)
3706#endif 5158# endif
3707 cb (EV_A_ EV_PREPARE, prepares [i]); 5159 cb (EV_A_ EV_PREPARE, prepares [i]);
5160#endif
3708 5161
5162#if EV_CHECK_ENABLE
3709 if (types & EV_CHECK) 5163 if (types & EV_CHECK)
3710 for (i = checkcnt; i--; ) 5164 for (i = checkcnt; i--; )
3711 cb (EV_A_ EV_CHECK, checks [i]); 5165 cb (EV_A_ EV_CHECK, checks [i]);
5166#endif
3712 5167
5168#if EV_SIGNAL_ENABLE
3713 if (types & EV_SIGNAL) 5169 if (types & EV_SIGNAL)
3714 for (i = 0; i < EV_NSIG - 1; ++i) 5170 for (i = 0; i < EV_NSIG - 1; ++i)
3715 for (wl = signals [i].head; wl; ) 5171 for (wl = signals [i].head; wl; )
3716 { 5172 {
3717 wn = wl->next; 5173 wn = wl->next;
3718 cb (EV_A_ EV_SIGNAL, wl); 5174 cb (EV_A_ EV_SIGNAL, wl);
3719 wl = wn; 5175 wl = wn;
3720 } 5176 }
5177#endif
3721 5178
5179#if EV_CHILD_ENABLE
3722 if (types & EV_CHILD) 5180 if (types & EV_CHILD)
3723 for (i = EV_PID_HASHSIZE; i--; ) 5181 for (i = (EV_PID_HASHSIZE); i--; )
3724 for (wl = childs [i]; wl; ) 5182 for (wl = childs [i]; wl; )
3725 { 5183 {
3726 wn = wl->next; 5184 wn = wl->next;
3727 cb (EV_A_ EV_CHILD, wl); 5185 cb (EV_A_ EV_CHILD, wl);
3728 wl = wn; 5186 wl = wn;
3729 } 5187 }
5188#endif
3730/* EV_STAT 0x00001000 /* stat data changed */ 5189/* EV_STAT 0x00001000 /* stat data changed */
3731/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5190/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3732} 5191}
3733#endif 5192#endif
3734 5193
3735#if EV_MULTIPLICITY 5194#if EV_MULTIPLICITY
3736 #include "ev_wrap.h" 5195 #include "ev_wrap.h"
3737#endif 5196#endif
3738 5197
3739#ifdef __cplusplus
3740}
3741#endif
3742

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