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Comparing libev/ev.c (file contents):
Revision 1.325 by root, Sun Jan 24 12:31:55 2010 UTC vs.
Revision 1.490 by root, Thu Jun 20 22:44:59 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 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
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 121# ifndef EV_USE_KQUEUE
117# else 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h> 167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
157#include <stdlib.h> 177#include <stdlib.h>
158#include <string.h> 178#include <string.h>
159#include <fcntl.h> 179#include <fcntl.h>
160#include <stddef.h> 180#include <stddef.h>
161 181
… …
163 183
164#include <assert.h> 184#include <assert.h>
165#include <errno.h> 185#include <errno.h>
166#include <sys/types.h> 186#include <sys/types.h>
167#include <time.h> 187#include <time.h>
188#include <limits.h>
168 189
169#include <signal.h> 190#include <signal.h>
170 191
171#ifdef EV_H 192#ifdef EV_H
172# include EV_H 193# include EV_H
173#else 194#else
174# include "ev.h" 195# include "ev.h"
196#endif
197
198#if EV_NO_THREADS
199# undef EV_NO_SMP
200# define EV_NO_SMP 1
201# undef ECB_NO_THREADS
202# define ECB_NO_THREADS 1
203#endif
204#if EV_NO_SMP
205# undef EV_NO_SMP
206# define ECB_NO_SMP 1
175#endif 207#endif
176 208
177#ifndef _WIN32 209#ifndef _WIN32
178# include <sys/time.h> 210# include <sys/time.h>
179# include <sys/wait.h> 211# include <sys/wait.h>
180# include <unistd.h> 212# include <unistd.h>
181#else 213#else
182# include <io.h> 214# include <io.h>
183# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
184# include <windows.h> 217# include <windows.h>
185# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
186# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
187# endif 220# endif
221# undef EV_AVOID_STDIO
188#endif 222#endif
189 223
190/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
191 225
192/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG) 227#if defined EV_NSIG
194/* use what's provided */ 228/* use what's provided */
195#elif defined (NSIG) 229#elif defined NSIG
196# define EV_NSIG (NSIG) 230# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 231#elif defined _NSIG
198# define EV_NSIG (_NSIG) 232# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX) 233#elif defined SIGMAX
200# define EV_NSIG (SIGMAX+1) 234# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX) 235#elif defined SIG_MAX
202# define EV_NSIG (SIG_MAX+1) 236# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX) 237#elif defined _SIG_MAX
204# define EV_NSIG (_SIG_MAX+1) 238# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG) 239#elif defined MAXSIG
206# define EV_NSIG (MAXSIG+1) 240# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 241#elif defined MAX_SIG
208# define EV_NSIG (MAX_SIG+1) 242# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 243#elif defined SIGARRAYSIZE
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 245#elif defined _sys_nsig
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 247#else
214# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
215/* to make it compile regardless, just remove the above line */ 249#endif
216# define EV_NSIG 65 250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
217#endif 253#endif
218 254
219#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
221# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 258# else
223# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
224# endif 260# endif
225#endif 261#endif
226 262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
269# endif
270#endif
271
227#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 274# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 275# else
231# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
232# endif 277# endif
233#endif 278#endif
234 279
… …
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 281# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 282#endif
238 283
239#ifndef EV_USE_NANOSLEEP 284#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 285# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 286# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 287# else
243# define EV_USE_NANOSLEEP 0 288# define EV_USE_NANOSLEEP 0
244# endif 289# endif
245#endif 290#endif
246 291
247#ifndef EV_USE_SELECT 292#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 293# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 294#endif
250 295
251#ifndef EV_USE_POLL 296#ifndef EV_USE_POLL
252# ifdef _WIN32 297# ifdef _WIN32
253# define EV_USE_POLL 0 298# define EV_USE_POLL 0
254# else 299# else
255# define EV_USE_POLL 1 300# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 301# endif
257#endif 302#endif
258 303
259#ifndef EV_USE_EPOLL 304#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 305# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 306# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 307# else
263# define EV_USE_EPOLL 0 308# define EV_USE_EPOLL 0
264# endif 309# endif
265#endif 310#endif
266 311
… …
270 315
271#ifndef EV_USE_PORT 316#ifndef EV_USE_PORT
272# define EV_USE_PORT 0 317# define EV_USE_PORT 0
273#endif 318#endif
274 319
320#ifndef EV_USE_LINUXAIO
321# define EV_USE_LINUXAIO 0
322#endif
323
275#ifndef EV_USE_INOTIFY 324#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 325# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 326# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 327# else
279# define EV_USE_INOTIFY 0 328# define EV_USE_INOTIFY 0
280# endif 329# endif
281#endif 330#endif
282 331
283#ifndef EV_PID_HASHSIZE 332#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 333# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 334#endif
290 335
291#ifndef EV_INOTIFY_HASHSIZE 336#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 337# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 338#endif
298 339
299#ifndef EV_USE_EVENTFD 340#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 341# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 342# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 343# else
303# define EV_USE_EVENTFD 0 344# define EV_USE_EVENTFD 0
304# endif 345# endif
305#endif 346#endif
306 347
307#ifndef EV_USE_SIGNALFD 348#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 349# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 350# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 351# else
311# define EV_USE_SIGNALFD 0 352# define EV_USE_SIGNALFD 0
312# endif 353# endif
313#endif 354#endif
314 355
… …
317# define EV_USE_4HEAP 1 358# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 359# define EV_HEAP_CACHE_AT 1
319#endif 360#endif
320 361
321#ifndef EV_VERIFY 362#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 363# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 364#endif
324 365
325#ifndef EV_USE_4HEAP 366#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 367# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 368#endif
328 369
329#ifndef EV_HEAP_CACHE_AT 370#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL 371# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
372#endif
373
374#ifdef __ANDROID__
375/* supposedly, android doesn't typedef fd_mask */
376# undef EV_USE_SELECT
377# define EV_USE_SELECT 0
378/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
379# undef EV_USE_CLOCK_SYSCALL
380# define EV_USE_CLOCK_SYSCALL 0
381#endif
382
383/* aix's poll.h seems to cause lots of trouble */
384#ifdef _AIX
385/* AIX has a completely broken poll.h header */
386# undef EV_USE_POLL
387# define EV_USE_POLL 0
388#endif
389
390#if EV_USE_LINUXAIO
391# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
331#endif 392#endif
332 393
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 394/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334/* which makes programs even slower. might work on other unices, too. */ 395/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 396#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h> 397# include <sys/syscall.h>
337# ifdef SYS_clock_gettime 398# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 399# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC 400# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1 401# define EV_USE_MONOTONIC 1
341# else 402# else
… …
344# endif 405# endif
345#endif 406#endif
346 407
347/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 408/* this block fixes any misconfiguration where we know we run into trouble otherwise */
348 409
349#ifdef _AIX
350/* AIX has a completely broken poll.h header */
351# undef EV_USE_POLL
352# define EV_USE_POLL 0
353#endif
354
355#ifndef CLOCK_MONOTONIC 410#ifndef CLOCK_MONOTONIC
356# undef EV_USE_MONOTONIC 411# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 0 412# define EV_USE_MONOTONIC 0
358#endif 413#endif
359 414
… …
366# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
367# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
368#endif 423#endif
369 424
370#if !EV_USE_NANOSLEEP 425#if !EV_USE_NANOSLEEP
371# ifndef _WIN32 426/* hp-ux has it in sys/time.h, which we unconditionally include above */
427# if !defined _WIN32 && !defined __hpux
372# include <sys/select.h> 428# include <sys/select.h>
373# endif 429# endif
374#endif 430#endif
375 431
376#if EV_USE_INOTIFY 432#if EV_USE_INOTIFY
377# include <sys/utsname.h>
378# include <sys/statfs.h> 433# include <sys/statfs.h>
379# include <sys/inotify.h> 434# include <sys/inotify.h>
380/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 435/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
381# ifndef IN_DONT_FOLLOW 436# ifndef IN_DONT_FOLLOW
382# undef EV_USE_INOTIFY 437# undef EV_USE_INOTIFY
383# define EV_USE_INOTIFY 0 438# define EV_USE_INOTIFY 0
384# endif 439# endif
385#endif
386
387#if EV_SELECT_IS_WINSOCKET
388# include <winsock.h>
389#endif 440#endif
390 441
391#if EV_USE_EVENTFD 442#if EV_USE_EVENTFD
392/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
393# include <stdint.h> 444# include <stdint.h>
… …
399# define EFD_CLOEXEC O_CLOEXEC 450# define EFD_CLOEXEC O_CLOEXEC
400# else 451# else
401# define EFD_CLOEXEC 02000000 452# define EFD_CLOEXEC 02000000
402# endif 453# endif
403# endif 454# endif
404# ifdef __cplusplus
405extern "C" {
406# endif
407int eventfd (unsigned int initval, int flags); 455EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
408# ifdef __cplusplus
409}
410# endif
411#endif 456#endif
412 457
413#if EV_USE_SIGNALFD 458#if EV_USE_SIGNALFD
414/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 459/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
415# include <stdint.h> 460# include <stdint.h>
… …
421# define SFD_CLOEXEC O_CLOEXEC 466# define SFD_CLOEXEC O_CLOEXEC
422# else 467# else
423# define SFD_CLOEXEC 02000000 468# define SFD_CLOEXEC 02000000
424# endif 469# endif
425# endif 470# endif
426# ifdef __cplusplus
427extern "C" {
428# endif
429int signalfd (int fd, const sigset_t *mask, int flags); 471EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430 472
431struct signalfd_siginfo 473struct signalfd_siginfo
432{ 474{
433 uint32_t ssi_signo; 475 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)]; 476 char pad[128 - sizeof (uint32_t)];
435}; 477};
436# ifdef __cplusplus
437}
438# endif 478#endif
439#endif
440
441 479
442/**/ 480/**/
443 481
444#if EV_VERIFY >= 3 482#if EV_VERIFY >= 3
445# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 483# define EV_FREQUENT_CHECK ev_verify (EV_A)
446#else 484#else
447# define EV_FREQUENT_CHECK do { } while (0) 485# define EV_FREQUENT_CHECK do { } while (0)
448#endif 486#endif
449 487
450/* 488/*
451 * This is used to avoid floating point rounding problems. 489 * This is used to work around floating point rounding problems.
452 * It is added to ev_rt_now when scheduling periodics
453 * to ensure progress, time-wise, even when rounding
454 * errors are against us.
455 * This value is good at least till the year 4000. 490 * This value is good at least till the year 4000.
456 * Better solutions welcome.
457 */ 491 */
458#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 492#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
493/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
459 494
460#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 495#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
461#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 496#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
462 497
498#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
499#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
500
501/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
502/* ECB.H BEGIN */
503/*
504 * libecb - http://software.schmorp.de/pkg/libecb
505 *
506 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
507 * Copyright (©) 2011 Emanuele Giaquinta
508 * All rights reserved.
509 *
510 * Redistribution and use in source and binary forms, with or without modifica-
511 * tion, are permitted provided that the following conditions are met:
512 *
513 * 1. Redistributions of source code must retain the above copyright notice,
514 * this list of conditions and the following disclaimer.
515 *
516 * 2. Redistributions in binary form must reproduce the above copyright
517 * notice, this list of conditions and the following disclaimer in the
518 * documentation and/or other materials provided with the distribution.
519 *
520 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
521 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
522 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
523 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
524 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
525 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
526 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
527 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
528 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
529 * OF THE POSSIBILITY OF SUCH DAMAGE.
530 *
531 * Alternatively, the contents of this file may be used under the terms of
532 * the GNU General Public License ("GPL") version 2 or any later version,
533 * in which case the provisions of the GPL are applicable instead of
534 * the above. If you wish to allow the use of your version of this file
535 * only under the terms of the GPL and not to allow others to use your
536 * version of this file under the BSD license, indicate your decision
537 * by deleting the provisions above and replace them with the notice
538 * and other provisions required by the GPL. If you do not delete the
539 * provisions above, a recipient may use your version of this file under
540 * either the BSD or the GPL.
541 */
542
543#ifndef ECB_H
544#define ECB_H
545
546/* 16 bits major, 16 bits minor */
547#define ECB_VERSION 0x00010005
548
549#ifdef _WIN32
550 typedef signed char int8_t;
551 typedef unsigned char uint8_t;
552 typedef signed short int16_t;
553 typedef unsigned short uint16_t;
554 typedef signed int int32_t;
555 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 556 #if __GNUC__
557 typedef signed long long int64_t;
558 typedef unsigned long long uint64_t;
559 #else /* _MSC_VER || __BORLANDC__ */
560 typedef signed __int64 int64_t;
561 typedef unsigned __int64 uint64_t;
562 #endif
563 #ifdef _WIN64
564 #define ECB_PTRSIZE 8
565 typedef uint64_t uintptr_t;
566 typedef int64_t intptr_t;
567 #else
568 #define ECB_PTRSIZE 4
569 typedef uint32_t uintptr_t;
570 typedef int32_t intptr_t;
571 #endif
572#else
573 #include <inttypes.h>
574 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
575 #define ECB_PTRSIZE 8
576 #else
577 #define ECB_PTRSIZE 4
578 #endif
579#endif
580
581#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
582#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
583
584/* work around x32 idiocy by defining proper macros */
585#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
586 #if _ILP32
587 #define ECB_AMD64_X32 1
588 #else
589 #define ECB_AMD64 1
590 #endif
591#endif
592
593/* many compilers define _GNUC_ to some versions but then only implement
594 * what their idiot authors think are the "more important" extensions,
595 * causing enormous grief in return for some better fake benchmark numbers.
596 * or so.
597 * we try to detect these and simply assume they are not gcc - if they have
598 * an issue with that they should have done it right in the first place.
599 */
600#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
601 #define ECB_GCC_VERSION(major,minor) 0
602#else
603 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
604#endif
605
606#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
607
608#if __clang__ && defined __has_builtin
609 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
610#else
611 #define ECB_CLANG_BUILTIN(x) 0
612#endif
613
614#if __clang__ && defined __has_extension
615 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
616#else
617 #define ECB_CLANG_EXTENSION(x) 0
618#endif
619
620#define ECB_CPP (__cplusplus+0)
621#define ECB_CPP11 (__cplusplus >= 201103L)
622#define ECB_CPP14 (__cplusplus >= 201402L)
623#define ECB_CPP17 (__cplusplus >= 201703L)
624
625#if ECB_CPP
626 #define ECB_C 0
627 #define ECB_STDC_VERSION 0
628#else
629 #define ECB_C 1
630 #define ECB_STDC_VERSION __STDC_VERSION__
631#endif
632
633#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
634#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
635#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
636
637#if ECB_CPP
638 #define ECB_EXTERN_C extern "C"
639 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
640 #define ECB_EXTERN_C_END }
641#else
642 #define ECB_EXTERN_C extern
643 #define ECB_EXTERN_C_BEG
644 #define ECB_EXTERN_C_END
645#endif
646
647/*****************************************************************************/
648
649/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
650/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
651
652#if ECB_NO_THREADS
653 #define ECB_NO_SMP 1
654#endif
655
656#if ECB_NO_SMP
657 #define ECB_MEMORY_FENCE do { } while (0)
658#endif
659
660/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
661#if __xlC__ && ECB_CPP
662 #include <builtins.h>
663#endif
664
665#if 1400 <= _MSC_VER
666 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
667#endif
668
669#ifndef ECB_MEMORY_FENCE
670 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
671 #if __i386 || __i386__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
673 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
674 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
675 #elif ECB_GCC_AMD64
676 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
677 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
678 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
679 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
681 #elif defined __ARM_ARCH_2__ \
682 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
683 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
684 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
685 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
686 || defined __ARM_ARCH_5TEJ__
687 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
688 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
689 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
690 || defined __ARM_ARCH_6T2__
691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
692 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
693 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
695 #elif __aarch64__
696 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
697 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
699 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
701 #elif defined __s390__ || defined __s390x__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
703 #elif defined __mips__
704 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
705 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
707 #elif defined __alpha__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
709 #elif defined __hppa__
710 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
711 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
712 #elif defined __ia64__
713 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
714 #elif defined __m68k__
715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
716 #elif defined __m88k__
717 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
718 #elif defined __sh__
719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
720 #endif
721 #endif
722#endif
723
724#ifndef ECB_MEMORY_FENCE
725 #if ECB_GCC_VERSION(4,7)
726 /* see comment below (stdatomic.h) about the C11 memory model. */
727 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
728 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
729 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
730
731 #elif ECB_CLANG_EXTENSION(c_atomic)
732 /* see comment below (stdatomic.h) about the C11 memory model. */
733 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
734 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
735 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
736
737 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
738 #define ECB_MEMORY_FENCE __sync_synchronize ()
739 #elif _MSC_VER >= 1500 /* VC++ 2008 */
740 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
741 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
742 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
743 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
744 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
745 #elif _MSC_VER >= 1400 /* VC++ 2005 */
746 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
747 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
748 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
749 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
750 #elif defined _WIN32
751 #include <WinNT.h>
752 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
753 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
754 #include <mbarrier.h>
755 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
756 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
757 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
758 #elif __xlC__
759 #define ECB_MEMORY_FENCE __sync ()
760 #endif
761#endif
762
763#ifndef ECB_MEMORY_FENCE
764 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
765 /* we assume that these memory fences work on all variables/all memory accesses, */
766 /* not just C11 atomics and atomic accesses */
767 #include <stdatomic.h>
768 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
769 /* any fence other than seq_cst, which isn't very efficient for us. */
770 /* Why that is, we don't know - either the C11 memory model is quite useless */
771 /* for most usages, or gcc and clang have a bug */
772 /* I *currently* lean towards the latter, and inefficiently implement */
773 /* all three of ecb's fences as a seq_cst fence */
774 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
775 /* for all __atomic_thread_fence's except seq_cst */
776 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if !ECB_AVOID_PTHREADS
782 /*
783 * if you get undefined symbol references to pthread_mutex_lock,
784 * or failure to find pthread.h, then you should implement
785 * the ECB_MEMORY_FENCE operations for your cpu/compiler
786 * OR provide pthread.h and link against the posix thread library
787 * of your system.
788 */
789 #include <pthread.h>
790 #define ECB_NEEDS_PTHREADS 1
791 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
792
793 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
794 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
795 #endif
796#endif
797
798#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
799 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
800#endif
801
802#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
803 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
804#endif
805
806/*****************************************************************************/
807
808#if ECB_CPP
809 #define ecb_inline static inline
810#elif ECB_GCC_VERSION(2,5)
811 #define ecb_inline static __inline__
812#elif ECB_C99
813 #define ecb_inline static inline
814#else
815 #define ecb_inline static
816#endif
817
818#if ECB_GCC_VERSION(3,3)
819 #define ecb_restrict __restrict__
820#elif ECB_C99
821 #define ecb_restrict restrict
822#else
823 #define ecb_restrict
824#endif
825
826typedef int ecb_bool;
827
828#define ECB_CONCAT_(a, b) a ## b
829#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
830#define ECB_STRINGIFY_(a) # a
831#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
832#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
833
834#define ecb_function_ ecb_inline
835
836#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
837 #define ecb_attribute(attrlist) __attribute__ (attrlist)
838#else
839 #define ecb_attribute(attrlist)
840#endif
841
842#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
843 #define ecb_is_constant(expr) __builtin_constant_p (expr)
844#else
845 /* possible C11 impl for integral types
846 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
847 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
848
849 #define ecb_is_constant(expr) 0
850#endif
851
852#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
464# define expect(expr,value) __builtin_expect ((expr),(value)) 853 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
465# define noinline __attribute__ ((noinline))
466#else 854#else
467# define expect(expr,value) (expr) 855 #define ecb_expect(expr,value) (expr)
468# define noinline
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470# define inline
471# endif 856#endif
472#endif
473 857
858#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
859 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
860#else
861 #define ecb_prefetch(addr,rw,locality)
862#endif
863
864/* no emulation for ecb_decltype */
865#if ECB_CPP11
866 // older implementations might have problems with decltype(x)::type, work around it
867 template<class T> struct ecb_decltype_t { typedef T type; };
868 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
869#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
870 #define ecb_decltype(x) __typeof__ (x)
871#endif
872
873#if _MSC_VER >= 1300
874 #define ecb_deprecated __declspec (deprecated)
875#else
876 #define ecb_deprecated ecb_attribute ((__deprecated__))
877#endif
878
879#if _MSC_VER >= 1500
880 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
881#elif ECB_GCC_VERSION(4,5)
882 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
883#else
884 #define ecb_deprecated_message(msg) ecb_deprecated
885#endif
886
887#if _MSC_VER >= 1400
888 #define ecb_noinline __declspec (noinline)
889#else
890 #define ecb_noinline ecb_attribute ((__noinline__))
891#endif
892
893#define ecb_unused ecb_attribute ((__unused__))
894#define ecb_const ecb_attribute ((__const__))
895#define ecb_pure ecb_attribute ((__pure__))
896
897#if ECB_C11 || __IBMC_NORETURN
898 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
899 #define ecb_noreturn _Noreturn
900#elif ECB_CPP11
901 #define ecb_noreturn [[noreturn]]
902#elif _MSC_VER >= 1200
903 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
904 #define ecb_noreturn __declspec (noreturn)
905#else
906 #define ecb_noreturn ecb_attribute ((__noreturn__))
907#endif
908
909#if ECB_GCC_VERSION(4,3)
910 #define ecb_artificial ecb_attribute ((__artificial__))
911 #define ecb_hot ecb_attribute ((__hot__))
912 #define ecb_cold ecb_attribute ((__cold__))
913#else
914 #define ecb_artificial
915 #define ecb_hot
916 #define ecb_cold
917#endif
918
919/* put around conditional expressions if you are very sure that the */
920/* expression is mostly true or mostly false. note that these return */
921/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 922#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 923#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
924/* for compatibility to the rest of the world */
925#define ecb_likely(expr) ecb_expect_true (expr)
926#define ecb_unlikely(expr) ecb_expect_false (expr)
927
928/* count trailing zero bits and count # of one bits */
929#if ECB_GCC_VERSION(3,4) \
930 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
931 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
932 && ECB_CLANG_BUILTIN(__builtin_popcount))
933 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
934 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
935 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
936 #define ecb_ctz32(x) __builtin_ctz (x)
937 #define ecb_ctz64(x) __builtin_ctzll (x)
938 #define ecb_popcount32(x) __builtin_popcount (x)
939 /* no popcountll */
940#else
941 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
942 ecb_function_ ecb_const int
943 ecb_ctz32 (uint32_t x)
944 {
945#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
946 unsigned long r;
947 _BitScanForward (&r, x);
948 return (int)r;
949#else
950 int r = 0;
951
952 x &= ~x + 1; /* this isolates the lowest bit */
953
954#if ECB_branchless_on_i386
955 r += !!(x & 0xaaaaaaaa) << 0;
956 r += !!(x & 0xcccccccc) << 1;
957 r += !!(x & 0xf0f0f0f0) << 2;
958 r += !!(x & 0xff00ff00) << 3;
959 r += !!(x & 0xffff0000) << 4;
960#else
961 if (x & 0xaaaaaaaa) r += 1;
962 if (x & 0xcccccccc) r += 2;
963 if (x & 0xf0f0f0f0) r += 4;
964 if (x & 0xff00ff00) r += 8;
965 if (x & 0xffff0000) r += 16;
966#endif
967
968 return r;
969#endif
970 }
971
972 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
973 ecb_function_ ecb_const int
974 ecb_ctz64 (uint64_t x)
975 {
976#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
977 unsigned long r;
978 _BitScanForward64 (&r, x);
979 return (int)r;
980#else
981 int shift = x & 0xffffffff ? 0 : 32;
982 return ecb_ctz32 (x >> shift) + shift;
983#endif
984 }
985
986 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
987 ecb_function_ ecb_const int
988 ecb_popcount32 (uint32_t x)
989 {
990 x -= (x >> 1) & 0x55555555;
991 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
992 x = ((x >> 4) + x) & 0x0f0f0f0f;
993 x *= 0x01010101;
994
995 return x >> 24;
996 }
997
998 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
999 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1000 {
1001#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1002 unsigned long r;
1003 _BitScanReverse (&r, x);
1004 return (int)r;
1005#else
1006 int r = 0;
1007
1008 if (x >> 16) { x >>= 16; r += 16; }
1009 if (x >> 8) { x >>= 8; r += 8; }
1010 if (x >> 4) { x >>= 4; r += 4; }
1011 if (x >> 2) { x >>= 2; r += 2; }
1012 if (x >> 1) { r += 1; }
1013
1014 return r;
1015#endif
1016 }
1017
1018 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1019 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1020 {
1021#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1022 unsigned long r;
1023 _BitScanReverse64 (&r, x);
1024 return (int)r;
1025#else
1026 int r = 0;
1027
1028 if (x >> 32) { x >>= 32; r += 32; }
1029
1030 return r + ecb_ld32 (x);
1031#endif
1032 }
1033#endif
1034
1035ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1036ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1037ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1038ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1039
1040ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1041ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1042{
1043 return ( (x * 0x0802U & 0x22110U)
1044 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1045}
1046
1047ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1048ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1049{
1050 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1051 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1052 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1053 x = ( x >> 8 ) | ( x << 8);
1054
1055 return x;
1056}
1057
1058ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1059ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1060{
1061 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1062 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1063 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1064 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1065 x = ( x >> 16 ) | ( x << 16);
1066
1067 return x;
1068}
1069
1070/* popcount64 is only available on 64 bit cpus as gcc builtin */
1071/* so for this version we are lazy */
1072ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1073ecb_function_ ecb_const int
1074ecb_popcount64 (uint64_t x)
1075{
1076 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1077}
1078
1079ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1080ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1081ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1082ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1083ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1084ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1085ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1086ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1087
1088ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1089ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1090ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1091ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1092ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1093ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1094ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1095ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1096
1097#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1098 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1099 #define ecb_bswap16(x) __builtin_bswap16 (x)
1100 #else
1101 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1102 #endif
1103 #define ecb_bswap32(x) __builtin_bswap32 (x)
1104 #define ecb_bswap64(x) __builtin_bswap64 (x)
1105#elif _MSC_VER
1106 #include <stdlib.h>
1107 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1108 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1109 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1110#else
1111 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1112 ecb_function_ ecb_const uint16_t
1113 ecb_bswap16 (uint16_t x)
1114 {
1115 return ecb_rotl16 (x, 8);
1116 }
1117
1118 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1119 ecb_function_ ecb_const uint32_t
1120 ecb_bswap32 (uint32_t x)
1121 {
1122 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1123 }
1124
1125 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1126 ecb_function_ ecb_const uint64_t
1127 ecb_bswap64 (uint64_t x)
1128 {
1129 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1130 }
1131#endif
1132
1133#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1134 #define ecb_unreachable() __builtin_unreachable ()
1135#else
1136 /* this seems to work fine, but gcc always emits a warning for it :/ */
1137 ecb_inline ecb_noreturn void ecb_unreachable (void);
1138 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1139#endif
1140
1141/* try to tell the compiler that some condition is definitely true */
1142#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1143
1144ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1145ecb_inline ecb_const uint32_t
1146ecb_byteorder_helper (void)
1147{
1148 /* the union code still generates code under pressure in gcc, */
1149 /* but less than using pointers, and always seems to */
1150 /* successfully return a constant. */
1151 /* the reason why we have this horrible preprocessor mess */
1152 /* is to avoid it in all cases, at least on common architectures */
1153 /* or when using a recent enough gcc version (>= 4.6) */
1154#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1155 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1156 #define ECB_LITTLE_ENDIAN 1
1157 return 0x44332211;
1158#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1159 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1160 #define ECB_BIG_ENDIAN 1
1161 return 0x11223344;
1162#else
1163 union
1164 {
1165 uint8_t c[4];
1166 uint32_t u;
1167 } u = { 0x11, 0x22, 0x33, 0x44 };
1168 return u.u;
1169#endif
1170}
1171
1172ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1173ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1174ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1175ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1176
1177#if ECB_GCC_VERSION(3,0) || ECB_C99
1178 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1179#else
1180 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1181#endif
1182
1183#if ECB_CPP
1184 template<typename T>
1185 static inline T ecb_div_rd (T val, T div)
1186 {
1187 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1188 }
1189 template<typename T>
1190 static inline T ecb_div_ru (T val, T div)
1191 {
1192 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1193 }
1194#else
1195 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1196 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1197#endif
1198
1199#if ecb_cplusplus_does_not_suck
1200 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1201 template<typename T, int N>
1202 static inline int ecb_array_length (const T (&arr)[N])
1203 {
1204 return N;
1205 }
1206#else
1207 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1208#endif
1209
1210ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1211ecb_function_ ecb_const uint32_t
1212ecb_binary16_to_binary32 (uint32_t x)
1213{
1214 unsigned int s = (x & 0x8000) << (31 - 15);
1215 int e = (x >> 10) & 0x001f;
1216 unsigned int m = x & 0x03ff;
1217
1218 if (ecb_expect_false (e == 31))
1219 /* infinity or NaN */
1220 e = 255 - (127 - 15);
1221 else if (ecb_expect_false (!e))
1222 {
1223 if (ecb_expect_true (!m))
1224 /* zero, handled by code below by forcing e to 0 */
1225 e = 0 - (127 - 15);
1226 else
1227 {
1228 /* subnormal, renormalise */
1229 unsigned int s = 10 - ecb_ld32 (m);
1230
1231 m = (m << s) & 0x3ff; /* mask implicit bit */
1232 e -= s - 1;
1233 }
1234 }
1235
1236 /* e and m now are normalised, or zero, (or inf or nan) */
1237 e += 127 - 15;
1238
1239 return s | (e << 23) | (m << (23 - 10));
1240}
1241
1242ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1243ecb_function_ ecb_const uint16_t
1244ecb_binary32_to_binary16 (uint32_t x)
1245{
1246 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1247 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1248 unsigned int m = x & 0x007fffff;
1249
1250 x &= 0x7fffffff;
1251
1252 /* if it's within range of binary16 normals, use fast path */
1253 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1254 {
1255 /* mantissa round-to-even */
1256 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1257
1258 /* handle overflow */
1259 if (ecb_expect_false (m >= 0x00800000))
1260 {
1261 m >>= 1;
1262 e += 1;
1263 }
1264
1265 return s | (e << 10) | (m >> (23 - 10));
1266 }
1267
1268 /* handle large numbers and infinity */
1269 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1270 return s | 0x7c00;
1271
1272 /* handle zero, subnormals and small numbers */
1273 if (ecb_expect_true (x < 0x38800000))
1274 {
1275 /* zero */
1276 if (ecb_expect_true (!x))
1277 return s;
1278
1279 /* handle subnormals */
1280
1281 /* too small, will be zero */
1282 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1283 return s;
1284
1285 m |= 0x00800000; /* make implicit bit explicit */
1286
1287 /* very tricky - we need to round to the nearest e (+10) bit value */
1288 {
1289 unsigned int bits = 14 - e;
1290 unsigned int half = (1 << (bits - 1)) - 1;
1291 unsigned int even = (m >> bits) & 1;
1292
1293 /* if this overflows, we will end up with a normalised number */
1294 m = (m + half + even) >> bits;
1295 }
1296
1297 return s | m;
1298 }
1299
1300 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1301 m >>= 13;
1302
1303 return s | 0x7c00 | m | !m;
1304}
1305
1306/*******************************************************************************/
1307/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1308
1309/* basically, everything uses "ieee pure-endian" floating point numbers */
1310/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1311#if 0 \
1312 || __i386 || __i386__ \
1313 || ECB_GCC_AMD64 \
1314 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1315 || defined __s390__ || defined __s390x__ \
1316 || defined __mips__ \
1317 || defined __alpha__ \
1318 || defined __hppa__ \
1319 || defined __ia64__ \
1320 || defined __m68k__ \
1321 || defined __m88k__ \
1322 || defined __sh__ \
1323 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1324 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1325 || defined __aarch64__
1326 #define ECB_STDFP 1
1327 #include <string.h> /* for memcpy */
1328#else
1329 #define ECB_STDFP 0
1330#endif
1331
1332#ifndef ECB_NO_LIBM
1333
1334 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1335
1336 /* only the oldest of old doesn't have this one. solaris. */
1337 #ifdef INFINITY
1338 #define ECB_INFINITY INFINITY
1339 #else
1340 #define ECB_INFINITY HUGE_VAL
1341 #endif
1342
1343 #ifdef NAN
1344 #define ECB_NAN NAN
1345 #else
1346 #define ECB_NAN ECB_INFINITY
1347 #endif
1348
1349 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1350 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1351 #define ecb_frexpf(x,e) frexpf ((x), (e))
1352 #else
1353 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1354 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1355 #endif
1356
1357 /* convert a float to ieee single/binary32 */
1358 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1359 ecb_function_ ecb_const uint32_t
1360 ecb_float_to_binary32 (float x)
1361 {
1362 uint32_t r;
1363
1364 #if ECB_STDFP
1365 memcpy (&r, &x, 4);
1366 #else
1367 /* slow emulation, works for anything but -0 */
1368 uint32_t m;
1369 int e;
1370
1371 if (x == 0e0f ) return 0x00000000U;
1372 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1373 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1374 if (x != x ) return 0x7fbfffffU;
1375
1376 m = ecb_frexpf (x, &e) * 0x1000000U;
1377
1378 r = m & 0x80000000U;
1379
1380 if (r)
1381 m = -m;
1382
1383 if (e <= -126)
1384 {
1385 m &= 0xffffffU;
1386 m >>= (-125 - e);
1387 e = -126;
1388 }
1389
1390 r |= (e + 126) << 23;
1391 r |= m & 0x7fffffU;
1392 #endif
1393
1394 return r;
1395 }
1396
1397 /* converts an ieee single/binary32 to a float */
1398 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1399 ecb_function_ ecb_const float
1400 ecb_binary32_to_float (uint32_t x)
1401 {
1402 float r;
1403
1404 #if ECB_STDFP
1405 memcpy (&r, &x, 4);
1406 #else
1407 /* emulation, only works for normals and subnormals and +0 */
1408 int neg = x >> 31;
1409 int e = (x >> 23) & 0xffU;
1410
1411 x &= 0x7fffffU;
1412
1413 if (e)
1414 x |= 0x800000U;
1415 else
1416 e = 1;
1417
1418 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1419 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1420
1421 r = neg ? -r : r;
1422 #endif
1423
1424 return r;
1425 }
1426
1427 /* convert a double to ieee double/binary64 */
1428 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1429 ecb_function_ ecb_const uint64_t
1430 ecb_double_to_binary64 (double x)
1431 {
1432 uint64_t r;
1433
1434 #if ECB_STDFP
1435 memcpy (&r, &x, 8);
1436 #else
1437 /* slow emulation, works for anything but -0 */
1438 uint64_t m;
1439 int e;
1440
1441 if (x == 0e0 ) return 0x0000000000000000U;
1442 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1443 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1444 if (x != x ) return 0X7ff7ffffffffffffU;
1445
1446 m = frexp (x, &e) * 0x20000000000000U;
1447
1448 r = m & 0x8000000000000000;;
1449
1450 if (r)
1451 m = -m;
1452
1453 if (e <= -1022)
1454 {
1455 m &= 0x1fffffffffffffU;
1456 m >>= (-1021 - e);
1457 e = -1022;
1458 }
1459
1460 r |= ((uint64_t)(e + 1022)) << 52;
1461 r |= m & 0xfffffffffffffU;
1462 #endif
1463
1464 return r;
1465 }
1466
1467 /* converts an ieee double/binary64 to a double */
1468 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1469 ecb_function_ ecb_const double
1470 ecb_binary64_to_double (uint64_t x)
1471 {
1472 double r;
1473
1474 #if ECB_STDFP
1475 memcpy (&r, &x, 8);
1476 #else
1477 /* emulation, only works for normals and subnormals and +0 */
1478 int neg = x >> 63;
1479 int e = (x >> 52) & 0x7ffU;
1480
1481 x &= 0xfffffffffffffU;
1482
1483 if (e)
1484 x |= 0x10000000000000U;
1485 else
1486 e = 1;
1487
1488 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1489 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1490
1491 r = neg ? -r : r;
1492 #endif
1493
1494 return r;
1495 }
1496
1497 /* convert a float to ieee half/binary16 */
1498 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1499 ecb_function_ ecb_const uint16_t
1500 ecb_float_to_binary16 (float x)
1501 {
1502 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1503 }
1504
1505 /* convert an ieee half/binary16 to float */
1506 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1507 ecb_function_ ecb_const float
1508 ecb_binary16_to_float (uint16_t x)
1509 {
1510 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1511 }
1512
1513#endif
1514
1515#endif
1516
1517/* ECB.H END */
1518
1519#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1520/* if your architecture doesn't need memory fences, e.g. because it is
1521 * single-cpu/core, or if you use libev in a project that doesn't use libev
1522 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1523 * libev, in which cases the memory fences become nops.
1524 * alternatively, you can remove this #error and link against libpthread,
1525 * which will then provide the memory fences.
1526 */
1527# error "memory fences not defined for your architecture, please report"
1528#endif
1529
1530#ifndef ECB_MEMORY_FENCE
1531# define ECB_MEMORY_FENCE do { } while (0)
1532# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1533# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1534#endif
1535
1536#define expect_false(cond) ecb_expect_false (cond)
1537#define expect_true(cond) ecb_expect_true (cond)
1538#define noinline ecb_noinline
1539
476#define inline_size static inline 1540#define inline_size ecb_inline
477 1541
478#if EV_MINIMAL 1542#if EV_FEATURE_CODE
479# define inline_speed static noinline
480#else
481# define inline_speed static inline 1543# define inline_speed ecb_inline
1544#else
1545# define inline_speed noinline static
482#endif 1546#endif
483 1547
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1548#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485 1549
486#if EV_MINPRI == EV_MAXPRI 1550#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0) 1551# define ABSPRI(w) (((W)w), 0)
488#else 1552#else
489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1553# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif 1554#endif
491 1555
492#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1556#define EMPTY /* required for microsofts broken pseudo-c compiler */
493#define EMPTY2(a,b) /* used to suppress some warnings */
494 1557
495typedef ev_watcher *W; 1558typedef ev_watcher *W;
496typedef ev_watcher_list *WL; 1559typedef ev_watcher_list *WL;
497typedef ev_watcher_time *WT; 1560typedef ev_watcher_time *WT;
498 1561
499#define ev_active(w) ((W)(w))->active 1562#define ev_active(w) ((W)(w))->active
500#define ev_at(w) ((WT)(w))->at 1563#define ev_at(w) ((WT)(w))->at
501 1564
502#if EV_USE_REALTIME 1565#if EV_USE_REALTIME
503/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1566/* sig_atomic_t is used to avoid per-thread variables or locking but still */
504/* giving it a reasonably high chance of working on typical architetcures */ 1567/* giving it a reasonably high chance of working on typical architectures */
505static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1568static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
506#endif 1569#endif
507 1570
508#if EV_USE_MONOTONIC 1571#if EV_USE_MONOTONIC
509static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1572static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
523# include "ev_win32.c" 1586# include "ev_win32.c"
524#endif 1587#endif
525 1588
526/*****************************************************************************/ 1589/*****************************************************************************/
527 1590
1591/* define a suitable floor function (only used by periodics atm) */
1592
1593#if EV_USE_FLOOR
1594# include <math.h>
1595# define ev_floor(v) floor (v)
1596#else
1597
1598#include <float.h>
1599
1600/* a floor() replacement function, should be independent of ev_tstamp type */
1601noinline
1602static ev_tstamp
1603ev_floor (ev_tstamp v)
1604{
1605 /* the choice of shift factor is not terribly important */
1606#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1607 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1608#else
1609 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1610#endif
1611
1612 /* argument too large for an unsigned long? */
1613 if (expect_false (v >= shift))
1614 {
1615 ev_tstamp f;
1616
1617 if (v == v - 1.)
1618 return v; /* very large number */
1619
1620 f = shift * ev_floor (v * (1. / shift));
1621 return f + ev_floor (v - f);
1622 }
1623
1624 /* special treatment for negative args? */
1625 if (expect_false (v < 0.))
1626 {
1627 ev_tstamp f = -ev_floor (-v);
1628
1629 return f - (f == v ? 0 : 1);
1630 }
1631
1632 /* fits into an unsigned long */
1633 return (unsigned long)v;
1634}
1635
1636#endif
1637
1638/*****************************************************************************/
1639
1640#ifdef __linux
1641# include <sys/utsname.h>
1642#endif
1643
1644noinline ecb_cold
1645static unsigned int
1646ev_linux_version (void)
1647{
1648#ifdef __linux
1649 unsigned int v = 0;
1650 struct utsname buf;
1651 int i;
1652 char *p = buf.release;
1653
1654 if (uname (&buf))
1655 return 0;
1656
1657 for (i = 3+1; --i; )
1658 {
1659 unsigned int c = 0;
1660
1661 for (;;)
1662 {
1663 if (*p >= '0' && *p <= '9')
1664 c = c * 10 + *p++ - '0';
1665 else
1666 {
1667 p += *p == '.';
1668 break;
1669 }
1670 }
1671
1672 v = (v << 8) | c;
1673 }
1674
1675 return v;
1676#else
1677 return 0;
1678#endif
1679}
1680
1681/*****************************************************************************/
1682
1683#if EV_AVOID_STDIO
1684noinline ecb_cold
1685static void
1686ev_printerr (const char *msg)
1687{
1688 write (STDERR_FILENO, msg, strlen (msg));
1689}
1690#endif
1691
528static void (*syserr_cb)(const char *msg); 1692static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
529 1693
1694ecb_cold
530void 1695void
531ev_set_syserr_cb (void (*cb)(const char *msg)) 1696ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
532{ 1697{
533 syserr_cb = cb; 1698 syserr_cb = cb;
534} 1699}
535 1700
536static void noinline 1701noinline ecb_cold
1702static void
537ev_syserr (const char *msg) 1703ev_syserr (const char *msg)
538{ 1704{
539 if (!msg) 1705 if (!msg)
540 msg = "(libev) system error"; 1706 msg = "(libev) system error";
541 1707
542 if (syserr_cb) 1708 if (syserr_cb)
543 syserr_cb (msg); 1709 syserr_cb (msg);
544 else 1710 else
545 { 1711 {
1712#if EV_AVOID_STDIO
1713 ev_printerr (msg);
1714 ev_printerr (": ");
1715 ev_printerr (strerror (errno));
1716 ev_printerr ("\n");
1717#else
546 perror (msg); 1718 perror (msg);
1719#endif
547 abort (); 1720 abort ();
548 } 1721 }
549} 1722}
550 1723
551static void * 1724static void *
552ev_realloc_emul (void *ptr, long size) 1725ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
553{ 1726{
554 /* some systems, notably openbsd and darwin, fail to properly 1727 /* some systems, notably openbsd and darwin, fail to properly
555 * implement realloc (x, 0) (as required by both ansi c-98 and 1728 * implement realloc (x, 0) (as required by both ansi c-89 and
556 * the single unix specification, so work around them here. 1729 * the single unix specification, so work around them here.
1730 * recently, also (at least) fedora and debian started breaking it,
1731 * despite documenting it otherwise.
557 */ 1732 */
558 1733
559 if (size) 1734 if (size)
560 return realloc (ptr, size); 1735 return realloc (ptr, size);
561 1736
562 free (ptr); 1737 free (ptr);
563 return 0; 1738 return 0;
564} 1739}
565 1740
566static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1741static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
567 1742
1743ecb_cold
568void 1744void
569ev_set_allocator (void *(*cb)(void *ptr, long size)) 1745ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
570{ 1746{
571 alloc = cb; 1747 alloc = cb;
572} 1748}
573 1749
574inline_speed void * 1750inline_speed void *
… …
576{ 1752{
577 ptr = alloc (ptr, size); 1753 ptr = alloc (ptr, size);
578 1754
579 if (!ptr && size) 1755 if (!ptr && size)
580 { 1756 {
1757#if EV_AVOID_STDIO
1758 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1759#else
581 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1760 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1761#endif
582 abort (); 1762 abort ();
583 } 1763 }
584 1764
585 return ptr; 1765 return ptr;
586} 1766}
… …
597typedef struct 1777typedef struct
598{ 1778{
599 WL head; 1779 WL head;
600 unsigned char events; /* the events watched for */ 1780 unsigned char events; /* the events watched for */
601 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1781 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
602 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1782 unsigned char emask; /* some backends store the actual kernel mask in here */
603 unsigned char unused; 1783 unsigned char unused;
604#if EV_USE_EPOLL 1784#if EV_USE_EPOLL
605 unsigned int egen; /* generation counter to counter epoll bugs */ 1785 unsigned int egen; /* generation counter to counter epoll bugs */
606#endif 1786#endif
607#if EV_SELECT_IS_WINSOCKET 1787#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
608 SOCKET handle; 1788 SOCKET handle;
1789#endif
1790#if EV_USE_IOCP
1791 OVERLAPPED or, ow;
609#endif 1792#endif
610} ANFD; 1793} ANFD;
611 1794
612/* stores the pending event set for a given watcher */ 1795/* stores the pending event set for a given watcher */
613typedef struct 1796typedef struct
… …
655 #undef VAR 1838 #undef VAR
656 }; 1839 };
657 #include "ev_wrap.h" 1840 #include "ev_wrap.h"
658 1841
659 static struct ev_loop default_loop_struct; 1842 static struct ev_loop default_loop_struct;
660 struct ev_loop *ev_default_loop_ptr; 1843 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
661 1844
662#else 1845#else
663 1846
664 ev_tstamp ev_rt_now; 1847 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
665 #define VAR(name,decl) static decl; 1848 #define VAR(name,decl) static decl;
666 #include "ev_vars.h" 1849 #include "ev_vars.h"
667 #undef VAR 1850 #undef VAR
668 1851
669 static int ev_default_loop_ptr; 1852 static int ev_default_loop_ptr;
670 1853
671#endif 1854#endif
672 1855
673#if EV_MINIMAL < 2 1856#if EV_FEATURE_API
674# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1857# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
675# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1858# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
676# define EV_INVOKE_PENDING invoke_cb (EV_A) 1859# define EV_INVOKE_PENDING invoke_cb (EV_A)
677#else 1860#else
678# define EV_RELEASE_CB (void)0 1861# define EV_RELEASE_CB (void)0
679# define EV_ACQUIRE_CB (void)0 1862# define EV_ACQUIRE_CB (void)0
680# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1863# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
681#endif 1864#endif
682 1865
683#define EVUNLOOP_RECURSE 0x80 1866#define EVBREAK_RECURSE 0x80
684 1867
685/*****************************************************************************/ 1868/*****************************************************************************/
686 1869
687#ifndef EV_HAVE_EV_TIME 1870#ifndef EV_HAVE_EV_TIME
688ev_tstamp 1871ev_tstamp
689ev_time (void) 1872ev_time (void) EV_NOEXCEPT
690{ 1873{
691#if EV_USE_REALTIME 1874#if EV_USE_REALTIME
692 if (expect_true (have_realtime)) 1875 if (expect_true (have_realtime))
693 { 1876 {
694 struct timespec ts; 1877 struct timespec ts;
… …
718 return ev_time (); 1901 return ev_time ();
719} 1902}
720 1903
721#if EV_MULTIPLICITY 1904#if EV_MULTIPLICITY
722ev_tstamp 1905ev_tstamp
723ev_now (EV_P) 1906ev_now (EV_P) EV_NOEXCEPT
724{ 1907{
725 return ev_rt_now; 1908 return ev_rt_now;
726} 1909}
727#endif 1910#endif
728 1911
729void 1912void
730ev_sleep (ev_tstamp delay) 1913ev_sleep (ev_tstamp delay) EV_NOEXCEPT
731{ 1914{
732 if (delay > 0.) 1915 if (delay > 0.)
733 { 1916 {
734#if EV_USE_NANOSLEEP 1917#if EV_USE_NANOSLEEP
735 struct timespec ts; 1918 struct timespec ts;
736 1919
737 ts.tv_sec = (time_t)delay; 1920 EV_TS_SET (ts, delay);
738 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
739
740 nanosleep (&ts, 0); 1921 nanosleep (&ts, 0);
741#elif defined(_WIN32) 1922#elif defined _WIN32
1923 /* maybe this should round up, as ms is very low resolution */
1924 /* compared to select (µs) or nanosleep (ns) */
742 Sleep ((unsigned long)(delay * 1e3)); 1925 Sleep ((unsigned long)(delay * 1e3));
743#else 1926#else
744 struct timeval tv; 1927 struct timeval tv;
745
746 tv.tv_sec = (time_t)delay;
747 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
748 1928
749 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1929 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
750 /* something not guaranteed by newer posix versions, but guaranteed */ 1930 /* something not guaranteed by newer posix versions, but guaranteed */
751 /* by older ones */ 1931 /* by older ones */
1932 EV_TV_SET (tv, delay);
752 select (0, 0, 0, 0, &tv); 1933 select (0, 0, 0, 0, &tv);
753#endif 1934#endif
754 } 1935 }
755} 1936}
756 1937
757/*****************************************************************************/ 1938/*****************************************************************************/
758 1939
759#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1940#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
760 1941
761/* find a suitable new size for the given array, */ 1942/* find a suitable new size for the given array, */
762/* hopefully by rounding to a ncie-to-malloc size */ 1943/* hopefully by rounding to a nice-to-malloc size */
763inline_size int 1944inline_size int
764array_nextsize (int elem, int cur, int cnt) 1945array_nextsize (int elem, int cur, int cnt)
765{ 1946{
766 int ncur = cur + 1; 1947 int ncur = cur + 1;
767 1948
768 do 1949 do
769 ncur <<= 1; 1950 ncur <<= 1;
770 while (cnt > ncur); 1951 while (cnt > ncur);
771 1952
772 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1953 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
773 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1954 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
774 { 1955 {
775 ncur *= elem; 1956 ncur *= elem;
776 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1957 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
777 ncur = ncur - sizeof (void *) * 4; 1958 ncur = ncur - sizeof (void *) * 4;
… …
779 } 1960 }
780 1961
781 return ncur; 1962 return ncur;
782} 1963}
783 1964
784static noinline void * 1965noinline ecb_cold
1966static void *
785array_realloc (int elem, void *base, int *cur, int cnt) 1967array_realloc (int elem, void *base, int *cur, int cnt)
786{ 1968{
787 *cur = array_nextsize (elem, *cur, cnt); 1969 *cur = array_nextsize (elem, *cur, cnt);
788 return ev_realloc (base, elem * *cur); 1970 return ev_realloc (base, elem * *cur);
789} 1971}
790 1972
1973#define array_needsize_noinit(base,count)
1974
791#define array_init_zero(base,count) \ 1975#define array_needsize_zerofill(base,count) \
792 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1976 memset ((void *)(base), 0, sizeof (*(base)) * (count))
793 1977
794#define array_needsize(type,base,cur,cnt,init) \ 1978#define array_needsize(type,base,cur,cnt,init) \
795 if (expect_false ((cnt) > (cur))) \ 1979 if (expect_false ((cnt) > (cur))) \
796 { \ 1980 { \
797 int ocur_ = (cur); \ 1981 ecb_unused int ocur_ = (cur); \
798 (base) = (type *)array_realloc \ 1982 (base) = (type *)array_realloc \
799 (sizeof (type), (base), &(cur), (cnt)); \ 1983 (sizeof (type), (base), &(cur), (cnt)); \
800 init ((base) + (ocur_), (cur) - ocur_); \ 1984 init ((base) + (ocur_), (cur) - ocur_); \
801 } 1985 }
802 1986
… …
814 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1998 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
815 1999
816/*****************************************************************************/ 2000/*****************************************************************************/
817 2001
818/* dummy callback for pending events */ 2002/* dummy callback for pending events */
819static void noinline 2003noinline
2004static void
820pendingcb (EV_P_ ev_prepare *w, int revents) 2005pendingcb (EV_P_ ev_prepare *w, int revents)
821{ 2006{
822} 2007}
823 2008
824void noinline 2009noinline
2010void
825ev_feed_event (EV_P_ void *w, int revents) 2011ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
826{ 2012{
827 W w_ = (W)w; 2013 W w_ = (W)w;
828 int pri = ABSPRI (w_); 2014 int pri = ABSPRI (w_);
829 2015
830 if (expect_false (w_->pending)) 2016 if (expect_false (w_->pending))
831 pendings [pri][w_->pending - 1].events |= revents; 2017 pendings [pri][w_->pending - 1].events |= revents;
832 else 2018 else
833 { 2019 {
834 w_->pending = ++pendingcnt [pri]; 2020 w_->pending = ++pendingcnt [pri];
835 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2021 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
836 pendings [pri][w_->pending - 1].w = w_; 2022 pendings [pri][w_->pending - 1].w = w_;
837 pendings [pri][w_->pending - 1].events = revents; 2023 pendings [pri][w_->pending - 1].events = revents;
838 } 2024 }
2025
2026 pendingpri = NUMPRI - 1;
839} 2027}
840 2028
841inline_speed void 2029inline_speed void
842feed_reverse (EV_P_ W w) 2030feed_reverse (EV_P_ W w)
843{ 2031{
844 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2032 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
845 rfeeds [rfeedcnt++] = w; 2033 rfeeds [rfeedcnt++] = w;
846} 2034}
847 2035
848inline_size void 2036inline_size void
849feed_reverse_done (EV_P_ int revents) 2037feed_reverse_done (EV_P_ int revents)
… …
863} 2051}
864 2052
865/*****************************************************************************/ 2053/*****************************************************************************/
866 2054
867inline_speed void 2055inline_speed void
868fd_event_nc (EV_P_ int fd, int revents) 2056fd_event_nocheck (EV_P_ int fd, int revents)
869{ 2057{
870 ANFD *anfd = anfds + fd; 2058 ANFD *anfd = anfds + fd;
871 ev_io *w; 2059 ev_io *w;
872 2060
873 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2061 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
885fd_event (EV_P_ int fd, int revents) 2073fd_event (EV_P_ int fd, int revents)
886{ 2074{
887 ANFD *anfd = anfds + fd; 2075 ANFD *anfd = anfds + fd;
888 2076
889 if (expect_true (!anfd->reify)) 2077 if (expect_true (!anfd->reify))
890 fd_event_nc (EV_A_ fd, revents); 2078 fd_event_nocheck (EV_A_ fd, revents);
891} 2079}
892 2080
893void 2081void
894ev_feed_fd_event (EV_P_ int fd, int revents) 2082ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
895{ 2083{
896 if (fd >= 0 && fd < anfdmax) 2084 if (fd >= 0 && fd < anfdmax)
897 fd_event_nc (EV_A_ fd, revents); 2085 fd_event_nocheck (EV_A_ fd, revents);
898} 2086}
899 2087
900/* make sure the external fd watch events are in-sync */ 2088/* make sure the external fd watch events are in-sync */
901/* with the kernel/libev internal state */ 2089/* with the kernel/libev internal state */
902inline_size void 2090inline_size void
903fd_reify (EV_P) 2091fd_reify (EV_P)
904{ 2092{
905 int i; 2093 int i;
906 2094
2095#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2096 for (i = 0; i < fdchangecnt; ++i)
2097 {
2098 int fd = fdchanges [i];
2099 ANFD *anfd = anfds + fd;
2100
2101 if (anfd->reify & EV__IOFDSET && anfd->head)
2102 {
2103 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2104
2105 if (handle != anfd->handle)
2106 {
2107 unsigned long arg;
2108
2109 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2110
2111 /* handle changed, but fd didn't - we need to do it in two steps */
2112 backend_modify (EV_A_ fd, anfd->events, 0);
2113 anfd->events = 0;
2114 anfd->handle = handle;
2115 }
2116 }
2117 }
2118#endif
2119
907 for (i = 0; i < fdchangecnt; ++i) 2120 for (i = 0; i < fdchangecnt; ++i)
908 { 2121 {
909 int fd = fdchanges [i]; 2122 int fd = fdchanges [i];
910 ANFD *anfd = anfds + fd; 2123 ANFD *anfd = anfds + fd;
911 ev_io *w; 2124 ev_io *w;
912 2125
913 unsigned char events = 0; 2126 unsigned char o_events = anfd->events;
2127 unsigned char o_reify = anfd->reify;
914 2128
915 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2129 anfd->reify = 0;
916 events |= (unsigned char)w->events;
917 2130
918#if EV_SELECT_IS_WINSOCKET 2131 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
919 if (events)
920 { 2132 {
921 unsigned long arg; 2133 anfd->events = 0;
922 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2134
923 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2135 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2136 anfd->events |= (unsigned char)w->events;
2137
2138 if (o_events != anfd->events)
2139 o_reify = EV__IOFDSET; /* actually |= */
924 } 2140 }
925#endif
926 2141
927 { 2142 if (o_reify & EV__IOFDSET)
928 unsigned char o_events = anfd->events;
929 unsigned char o_reify = anfd->reify;
930
931 anfd->reify = 0;
932 anfd->events = events;
933
934 if (o_events != events || o_reify & EV__IOFDSET)
935 backend_modify (EV_A_ fd, o_events, events); 2143 backend_modify (EV_A_ fd, o_events, anfd->events);
936 }
937 } 2144 }
938 2145
939 fdchangecnt = 0; 2146 fdchangecnt = 0;
940} 2147}
941 2148
942/* something about the given fd changed */ 2149/* something about the given fd changed */
943inline_size void 2150inline_size
2151void
944fd_change (EV_P_ int fd, int flags) 2152fd_change (EV_P_ int fd, int flags)
945{ 2153{
946 unsigned char reify = anfds [fd].reify; 2154 unsigned char reify = anfds [fd].reify;
947 anfds [fd].reify |= flags; 2155 anfds [fd].reify |= flags;
948 2156
949 if (expect_true (!reify)) 2157 if (expect_true (!reify))
950 { 2158 {
951 ++fdchangecnt; 2159 ++fdchangecnt;
952 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2160 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
953 fdchanges [fdchangecnt - 1] = fd; 2161 fdchanges [fdchangecnt - 1] = fd;
954 } 2162 }
955} 2163}
956 2164
957/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2165/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
958inline_speed void 2166inline_speed ecb_cold void
959fd_kill (EV_P_ int fd) 2167fd_kill (EV_P_ int fd)
960{ 2168{
961 ev_io *w; 2169 ev_io *w;
962 2170
963 while ((w = (ev_io *)anfds [fd].head)) 2171 while ((w = (ev_io *)anfds [fd].head))
… …
965 ev_io_stop (EV_A_ w); 2173 ev_io_stop (EV_A_ w);
966 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2174 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
967 } 2175 }
968} 2176}
969 2177
970/* check whether the given fd is atcually valid, for error recovery */ 2178/* check whether the given fd is actually valid, for error recovery */
971inline_size int 2179inline_size ecb_cold int
972fd_valid (int fd) 2180fd_valid (int fd)
973{ 2181{
974#ifdef _WIN32 2182#ifdef _WIN32
975 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2183 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
976#else 2184#else
977 return fcntl (fd, F_GETFD) != -1; 2185 return fcntl (fd, F_GETFD) != -1;
978#endif 2186#endif
979} 2187}
980 2188
981/* called on EBADF to verify fds */ 2189/* called on EBADF to verify fds */
982static void noinline 2190noinline ecb_cold
2191static void
983fd_ebadf (EV_P) 2192fd_ebadf (EV_P)
984{ 2193{
985 int fd; 2194 int fd;
986 2195
987 for (fd = 0; fd < anfdmax; ++fd) 2196 for (fd = 0; fd < anfdmax; ++fd)
… …
989 if (!fd_valid (fd) && errno == EBADF) 2198 if (!fd_valid (fd) && errno == EBADF)
990 fd_kill (EV_A_ fd); 2199 fd_kill (EV_A_ fd);
991} 2200}
992 2201
993/* called on ENOMEM in select/poll to kill some fds and retry */ 2202/* called on ENOMEM in select/poll to kill some fds and retry */
994static void noinline 2203noinline ecb_cold
2204static void
995fd_enomem (EV_P) 2205fd_enomem (EV_P)
996{ 2206{
997 int fd; 2207 int fd;
998 2208
999 for (fd = anfdmax; fd--; ) 2209 for (fd = anfdmax; fd--; )
… …
1003 break; 2213 break;
1004 } 2214 }
1005} 2215}
1006 2216
1007/* usually called after fork if backend needs to re-arm all fds from scratch */ 2217/* usually called after fork if backend needs to re-arm all fds from scratch */
1008static void noinline 2218noinline
2219static void
1009fd_rearm_all (EV_P) 2220fd_rearm_all (EV_P)
1010{ 2221{
1011 int fd; 2222 int fd;
1012 2223
1013 for (fd = 0; fd < anfdmax; ++fd) 2224 for (fd = 0; fd < anfdmax; ++fd)
… …
1017 anfds [fd].emask = 0; 2228 anfds [fd].emask = 0;
1018 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2229 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1019 } 2230 }
1020} 2231}
1021 2232
2233/* used to prepare libev internal fd's */
2234/* this is not fork-safe */
2235inline_speed void
2236fd_intern (int fd)
2237{
2238#ifdef _WIN32
2239 unsigned long arg = 1;
2240 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2241#else
2242 fcntl (fd, F_SETFD, FD_CLOEXEC);
2243 fcntl (fd, F_SETFL, O_NONBLOCK);
2244#endif
2245}
2246
1022/*****************************************************************************/ 2247/*****************************************************************************/
1023 2248
1024/* 2249/*
1025 * the heap functions want a real array index. array index 0 uis guaranteed to not 2250 * the heap functions want a real array index. array index 0 is guaranteed to not
1026 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2251 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1027 * the branching factor of the d-tree. 2252 * the branching factor of the d-tree.
1028 */ 2253 */
1029 2254
1030/* 2255/*
… …
1178 2403
1179static ANSIG signals [EV_NSIG - 1]; 2404static ANSIG signals [EV_NSIG - 1];
1180 2405
1181/*****************************************************************************/ 2406/*****************************************************************************/
1182 2407
1183/* used to prepare libev internal fd's */ 2408#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1184/* this is not fork-safe */ 2409
2410noinline ecb_cold
2411static void
2412evpipe_init (EV_P)
2413{
2414 if (!ev_is_active (&pipe_w))
2415 {
2416 int fds [2];
2417
2418# if EV_USE_EVENTFD
2419 fds [0] = -1;
2420 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2421 if (fds [1] < 0 && errno == EINVAL)
2422 fds [1] = eventfd (0, 0);
2423
2424 if (fds [1] < 0)
2425# endif
2426 {
2427 while (pipe (fds))
2428 ev_syserr ("(libev) error creating signal/async pipe");
2429
2430 fd_intern (fds [0]);
2431 }
2432
2433 evpipe [0] = fds [0];
2434
2435 if (evpipe [1] < 0)
2436 evpipe [1] = fds [1]; /* first call, set write fd */
2437 else
2438 {
2439 /* on subsequent calls, do not change evpipe [1] */
2440 /* so that evpipe_write can always rely on its value. */
2441 /* this branch does not do anything sensible on windows, */
2442 /* so must not be executed on windows */
2443
2444 dup2 (fds [1], evpipe [1]);
2445 close (fds [1]);
2446 }
2447
2448 fd_intern (evpipe [1]);
2449
2450 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2451 ev_io_start (EV_A_ &pipe_w);
2452 ev_unref (EV_A); /* watcher should not keep loop alive */
2453 }
2454}
2455
1185inline_speed void 2456inline_speed void
1186fd_intern (int fd) 2457evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1187{ 2458{
1188#ifdef _WIN32 2459 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1189 unsigned long arg = 1;
1190 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1191#else
1192 fcntl (fd, F_SETFD, FD_CLOEXEC);
1193 fcntl (fd, F_SETFL, O_NONBLOCK);
1194#endif
1195}
1196 2460
1197static void noinline 2461 if (expect_true (*flag))
1198evpipe_init (EV_P) 2462 return;
1199{ 2463
1200 if (!ev_is_active (&pipe_w)) 2464 *flag = 1;
2465 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2466
2467 pipe_write_skipped = 1;
2468
2469 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2470
2471 if (pipe_write_wanted)
1201 { 2472 {
2473 int old_errno;
2474
2475 pipe_write_skipped = 0;
2476 ECB_MEMORY_FENCE_RELEASE;
2477
2478 old_errno = errno; /* save errno because write will clobber it */
2479
1202#if EV_USE_EVENTFD 2480#if EV_USE_EVENTFD
1203 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2481 if (evpipe [0] < 0)
1204 if (evfd < 0 && errno == EINVAL)
1205 evfd = eventfd (0, 0);
1206
1207 if (evfd >= 0)
1208 { 2482 {
1209 evpipe [0] = -1; 2483 uint64_t counter = 1;
1210 fd_intern (evfd); /* doing it twice doesn't hurt */ 2484 write (evpipe [1], &counter, sizeof (uint64_t));
1211 ev_io_set (&pipe_w, evfd, EV_READ);
1212 } 2485 }
1213 else 2486 else
1214#endif 2487#endif
1215 { 2488 {
1216 while (pipe (evpipe)) 2489#ifdef _WIN32
1217 ev_syserr ("(libev) error creating signal/async pipe"); 2490 WSABUF buf;
1218 2491 DWORD sent;
1219 fd_intern (evpipe [0]); 2492 buf.buf = (char *)&buf;
1220 fd_intern (evpipe [1]); 2493 buf.len = 1;
1221 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2494 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2495#else
2496 write (evpipe [1], &(evpipe [1]), 1);
2497#endif
1222 } 2498 }
1223
1224 ev_io_start (EV_A_ &pipe_w);
1225 ev_unref (EV_A); /* watcher should not keep loop alive */
1226 }
1227}
1228
1229inline_size void
1230evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1231{
1232 if (!*flag)
1233 {
1234 int old_errno = errno; /* save errno because write might clobber it */
1235
1236 *flag = 1;
1237
1238#if EV_USE_EVENTFD
1239 if (evfd >= 0)
1240 {
1241 uint64_t counter = 1;
1242 write (evfd, &counter, sizeof (uint64_t));
1243 }
1244 else
1245#endif
1246 write (evpipe [1], &old_errno, 1);
1247 2499
1248 errno = old_errno; 2500 errno = old_errno;
1249 } 2501 }
1250} 2502}
1251 2503
… …
1254static void 2506static void
1255pipecb (EV_P_ ev_io *iow, int revents) 2507pipecb (EV_P_ ev_io *iow, int revents)
1256{ 2508{
1257 int i; 2509 int i;
1258 2510
2511 if (revents & EV_READ)
2512 {
1259#if EV_USE_EVENTFD 2513#if EV_USE_EVENTFD
1260 if (evfd >= 0) 2514 if (evpipe [0] < 0)
1261 { 2515 {
1262 uint64_t counter; 2516 uint64_t counter;
1263 read (evfd, &counter, sizeof (uint64_t)); 2517 read (evpipe [1], &counter, sizeof (uint64_t));
1264 } 2518 }
1265 else 2519 else
1266#endif 2520#endif
1267 { 2521 {
1268 char dummy; 2522 char dummy[4];
2523#ifdef _WIN32
2524 WSABUF buf;
2525 DWORD recvd;
2526 DWORD flags = 0;
2527 buf.buf = dummy;
2528 buf.len = sizeof (dummy);
2529 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2530#else
1269 read (evpipe [0], &dummy, 1); 2531 read (evpipe [0], &dummy, sizeof (dummy));
2532#endif
2533 }
1270 } 2534 }
1271 2535
2536 pipe_write_skipped = 0;
2537
2538 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2539
2540#if EV_SIGNAL_ENABLE
1272 if (sig_pending) 2541 if (sig_pending)
1273 { 2542 {
1274 sig_pending = 0; 2543 sig_pending = 0;
2544
2545 ECB_MEMORY_FENCE;
1275 2546
1276 for (i = EV_NSIG - 1; i--; ) 2547 for (i = EV_NSIG - 1; i--; )
1277 if (expect_false (signals [i].pending)) 2548 if (expect_false (signals [i].pending))
1278 ev_feed_signal_event (EV_A_ i + 1); 2549 ev_feed_signal_event (EV_A_ i + 1);
1279 } 2550 }
2551#endif
1280 2552
1281#if EV_ASYNC_ENABLE 2553#if EV_ASYNC_ENABLE
1282 if (async_pending) 2554 if (async_pending)
1283 { 2555 {
1284 async_pending = 0; 2556 async_pending = 0;
2557
2558 ECB_MEMORY_FENCE;
1285 2559
1286 for (i = asynccnt; i--; ) 2560 for (i = asynccnt; i--; )
1287 if (asyncs [i]->sent) 2561 if (asyncs [i]->sent)
1288 { 2562 {
1289 asyncs [i]->sent = 0; 2563 asyncs [i]->sent = 0;
2564 ECB_MEMORY_FENCE_RELEASE;
1290 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2565 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1291 } 2566 }
1292 } 2567 }
1293#endif 2568#endif
1294} 2569}
1295 2570
1296/*****************************************************************************/ 2571/*****************************************************************************/
1297 2572
2573void
2574ev_feed_signal (int signum) EV_NOEXCEPT
2575{
2576#if EV_MULTIPLICITY
2577 EV_P;
2578 ECB_MEMORY_FENCE_ACQUIRE;
2579 EV_A = signals [signum - 1].loop;
2580
2581 if (!EV_A)
2582 return;
2583#endif
2584
2585 signals [signum - 1].pending = 1;
2586 evpipe_write (EV_A_ &sig_pending);
2587}
2588
1298static void 2589static void
1299ev_sighandler (int signum) 2590ev_sighandler (int signum)
1300{ 2591{
1301#if EV_MULTIPLICITY
1302 EV_P = signals [signum - 1].loop;
1303#endif
1304
1305#ifdef _WIN32 2592#ifdef _WIN32
1306 signal (signum, ev_sighandler); 2593 signal (signum, ev_sighandler);
1307#endif 2594#endif
1308 2595
1309 signals [signum - 1].pending = 1; 2596 ev_feed_signal (signum);
1310 evpipe_write (EV_A_ &sig_pending);
1311} 2597}
1312 2598
1313void noinline 2599noinline
2600void
1314ev_feed_signal_event (EV_P_ int signum) 2601ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1315{ 2602{
1316 WL w; 2603 WL w;
1317 2604
1318 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2605 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1319 return; 2606 return;
1320 2607
1321 --signum; 2608 --signum;
1322 2609
1323#if EV_MULTIPLICITY 2610#if EV_MULTIPLICITY
… …
1327 if (expect_false (signals [signum].loop != EV_A)) 2614 if (expect_false (signals [signum].loop != EV_A))
1328 return; 2615 return;
1329#endif 2616#endif
1330 2617
1331 signals [signum].pending = 0; 2618 signals [signum].pending = 0;
2619 ECB_MEMORY_FENCE_RELEASE;
1332 2620
1333 for (w = signals [signum].head; w; w = w->next) 2621 for (w = signals [signum].head; w; w = w->next)
1334 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2622 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1335} 2623}
1336 2624
… …
1352 break; 2640 break;
1353 } 2641 }
1354} 2642}
1355#endif 2643#endif
1356 2644
2645#endif
2646
1357/*****************************************************************************/ 2647/*****************************************************************************/
1358 2648
2649#if EV_CHILD_ENABLE
1359static WL childs [EV_PID_HASHSIZE]; 2650static WL childs [EV_PID_HASHSIZE];
1360
1361#ifndef _WIN32
1362 2651
1363static ev_signal childev; 2652static ev_signal childev;
1364 2653
1365#ifndef WIFCONTINUED 2654#ifndef WIFCONTINUED
1366# define WIFCONTINUED(status) 0 2655# define WIFCONTINUED(status) 0
… …
1371child_reap (EV_P_ int chain, int pid, int status) 2660child_reap (EV_P_ int chain, int pid, int status)
1372{ 2661{
1373 ev_child *w; 2662 ev_child *w;
1374 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2663 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1375 2664
1376 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2665 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1377 { 2666 {
1378 if ((w->pid == pid || !w->pid) 2667 if ((w->pid == pid || !w->pid)
1379 && (!traced || (w->flags & 1))) 2668 && (!traced || (w->flags & 1)))
1380 { 2669 {
1381 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2670 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1406 /* make sure we are called again until all children have been reaped */ 2695 /* make sure we are called again until all children have been reaped */
1407 /* we need to do it this way so that the callback gets called before we continue */ 2696 /* we need to do it this way so that the callback gets called before we continue */
1408 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2697 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1409 2698
1410 child_reap (EV_A_ pid, pid, status); 2699 child_reap (EV_A_ pid, pid, status);
1411 if (EV_PID_HASHSIZE > 1) 2700 if ((EV_PID_HASHSIZE) > 1)
1412 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2701 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1413} 2702}
1414 2703
1415#endif 2704#endif
1416 2705
1417/*****************************************************************************/ 2706/*****************************************************************************/
1418 2707
2708#if EV_USE_IOCP
2709# include "ev_iocp.c"
2710#endif
1419#if EV_USE_PORT 2711#if EV_USE_PORT
1420# include "ev_port.c" 2712# include "ev_port.c"
1421#endif 2713#endif
1422#if EV_USE_KQUEUE 2714#if EV_USE_KQUEUE
1423# include "ev_kqueue.c" 2715# include "ev_kqueue.c"
1424#endif 2716#endif
2717#if EV_USE_LINUXAIO
2718# include "ev_linuxaio.c"
2719#endif
1425#if EV_USE_EPOLL 2720#if EV_USE_EPOLL
1426# include "ev_epoll.c" 2721# include "ev_epoll.c"
1427#endif 2722#endif
1428#if EV_USE_POLL 2723#if EV_USE_POLL
1429# include "ev_poll.c" 2724# include "ev_poll.c"
1430#endif 2725#endif
1431#if EV_USE_SELECT 2726#if EV_USE_SELECT
1432# include "ev_select.c" 2727# include "ev_select.c"
1433#endif 2728#endif
1434 2729
1435int 2730ecb_cold int
1436ev_version_major (void) 2731ev_version_major (void) EV_NOEXCEPT
1437{ 2732{
1438 return EV_VERSION_MAJOR; 2733 return EV_VERSION_MAJOR;
1439} 2734}
1440 2735
1441int 2736ecb_cold int
1442ev_version_minor (void) 2737ev_version_minor (void) EV_NOEXCEPT
1443{ 2738{
1444 return EV_VERSION_MINOR; 2739 return EV_VERSION_MINOR;
1445} 2740}
1446 2741
1447/* return true if we are running with elevated privileges and should ignore env variables */ 2742/* return true if we are running with elevated privileges and should ignore env variables */
1448int inline_size 2743inline_size ecb_cold int
1449enable_secure (void) 2744enable_secure (void)
1450{ 2745{
1451#ifdef _WIN32 2746#ifdef _WIN32
1452 return 0; 2747 return 0;
1453#else 2748#else
1454 return getuid () != geteuid () 2749 return getuid () != geteuid ()
1455 || getgid () != getegid (); 2750 || getgid () != getegid ();
1456#endif 2751#endif
1457} 2752}
1458 2753
2754ecb_cold
1459unsigned int 2755unsigned int
1460ev_supported_backends (void) 2756ev_supported_backends (void) EV_NOEXCEPT
1461{ 2757{
1462 unsigned int flags = 0; 2758 unsigned int flags = 0;
1463 2759
1464 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2760 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1465 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2761 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1466 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2762 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2763 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1467 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2764 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1468 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2765 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1469 2766
1470 return flags; 2767 return flags;
1471} 2768}
1472 2769
2770ecb_cold
1473unsigned int 2771unsigned int
1474ev_recommended_backends (void) 2772ev_recommended_backends (void) EV_NOEXCEPT
1475{ 2773{
1476 unsigned int flags = ev_supported_backends (); 2774 unsigned int flags = ev_supported_backends ();
1477 2775
1478#ifndef __NetBSD__ 2776#ifndef __NetBSD__
1479 /* kqueue is borked on everything but netbsd apparently */ 2777 /* kqueue is borked on everything but netbsd apparently */
… …
1483#ifdef __APPLE__ 2781#ifdef __APPLE__
1484 /* only select works correctly on that "unix-certified" platform */ 2782 /* only select works correctly on that "unix-certified" platform */
1485 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2783 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1486 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2784 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1487#endif 2785#endif
2786#ifdef __FreeBSD__
2787 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2788#endif
1488 2789
1489 return flags; 2790 return flags;
1490} 2791}
1491 2792
2793ecb_cold
1492unsigned int 2794unsigned int
1493ev_embeddable_backends (void) 2795ev_embeddable_backends (void) EV_NOEXCEPT
1494{ 2796{
1495 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2797 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1496 2798
1497 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2799 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1498 /* please fix it and tell me how to detect the fix */ 2800 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1499 flags &= ~EVBACKEND_EPOLL; 2801 flags &= ~EVBACKEND_EPOLL;
1500 2802
1501 return flags; 2803 return flags;
1502} 2804}
1503 2805
1504unsigned int 2806unsigned int
1505ev_backend (EV_P) 2807ev_backend (EV_P) EV_NOEXCEPT
1506{ 2808{
1507 return backend; 2809 return backend;
1508} 2810}
1509 2811
1510#if EV_MINIMAL < 2 2812#if EV_FEATURE_API
1511unsigned int 2813unsigned int
1512ev_loop_count (EV_P) 2814ev_iteration (EV_P) EV_NOEXCEPT
1513{ 2815{
1514 return loop_count; 2816 return loop_count;
1515} 2817}
1516 2818
1517unsigned int 2819unsigned int
1518ev_loop_depth (EV_P) 2820ev_depth (EV_P) EV_NOEXCEPT
1519{ 2821{
1520 return loop_depth; 2822 return loop_depth;
1521} 2823}
1522 2824
1523void 2825void
1524ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2826ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1525{ 2827{
1526 io_blocktime = interval; 2828 io_blocktime = interval;
1527} 2829}
1528 2830
1529void 2831void
1530ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2832ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1531{ 2833{
1532 timeout_blocktime = interval; 2834 timeout_blocktime = interval;
1533} 2835}
1534 2836
1535void 2837void
1536ev_set_userdata (EV_P_ void *data) 2838ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1537{ 2839{
1538 userdata = data; 2840 userdata = data;
1539} 2841}
1540 2842
1541void * 2843void *
1542ev_userdata (EV_P) 2844ev_userdata (EV_P) EV_NOEXCEPT
1543{ 2845{
1544 return userdata; 2846 return userdata;
1545} 2847}
1546 2848
2849void
1547void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2850ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1548{ 2851{
1549 invoke_cb = invoke_pending_cb; 2852 invoke_cb = invoke_pending_cb;
1550} 2853}
1551 2854
2855void
1552void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2856ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1553{ 2857{
1554 release_cb = release; 2858 release_cb = release;
1555 acquire_cb = acquire; 2859 acquire_cb = acquire;
1556} 2860}
1557#endif 2861#endif
1558 2862
1559/* initialise a loop structure, must be zero-initialised */ 2863/* initialise a loop structure, must be zero-initialised */
1560static void noinline 2864noinline ecb_cold
2865static void
1561loop_init (EV_P_ unsigned int flags) 2866loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1562{ 2867{
1563 if (!backend) 2868 if (!backend)
1564 { 2869 {
2870 origflags = flags;
2871
1565#if EV_USE_REALTIME 2872#if EV_USE_REALTIME
1566 if (!have_realtime) 2873 if (!have_realtime)
1567 { 2874 {
1568 struct timespec ts; 2875 struct timespec ts;
1569 2876
… …
1591 if (!(flags & EVFLAG_NOENV) 2898 if (!(flags & EVFLAG_NOENV)
1592 && !enable_secure () 2899 && !enable_secure ()
1593 && getenv ("LIBEV_FLAGS")) 2900 && getenv ("LIBEV_FLAGS"))
1594 flags = atoi (getenv ("LIBEV_FLAGS")); 2901 flags = atoi (getenv ("LIBEV_FLAGS"));
1595 2902
1596 ev_rt_now = ev_time (); 2903 ev_rt_now = ev_time ();
1597 mn_now = get_clock (); 2904 mn_now = get_clock ();
1598 now_floor = mn_now; 2905 now_floor = mn_now;
1599 rtmn_diff = ev_rt_now - mn_now; 2906 rtmn_diff = ev_rt_now - mn_now;
1600#if EV_MINIMAL < 2 2907#if EV_FEATURE_API
1601 invoke_cb = ev_invoke_pending; 2908 invoke_cb = ev_invoke_pending;
1602#endif 2909#endif
1603 2910
1604 io_blocktime = 0.; 2911 io_blocktime = 0.;
1605 timeout_blocktime = 0.; 2912 timeout_blocktime = 0.;
1606 backend = 0; 2913 backend = 0;
1607 backend_fd = -1; 2914 backend_fd = -1;
1608 sig_pending = 0; 2915 sig_pending = 0;
1609#if EV_ASYNC_ENABLE 2916#if EV_ASYNC_ENABLE
1610 async_pending = 0; 2917 async_pending = 0;
1611#endif 2918#endif
2919 pipe_write_skipped = 0;
2920 pipe_write_wanted = 0;
2921 evpipe [0] = -1;
2922 evpipe [1] = -1;
1612#if EV_USE_INOTIFY 2923#if EV_USE_INOTIFY
1613 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2924 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1614#endif 2925#endif
1615#if EV_USE_SIGNALFD 2926#if EV_USE_SIGNALFD
1616 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2927 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1617#endif 2928#endif
1618 2929
1619 if (!(flags & 0x0000ffffU)) 2930 if (!(flags & EVBACKEND_MASK))
1620 flags |= ev_recommended_backends (); 2931 flags |= ev_recommended_backends ();
1621 2932
2933#if EV_USE_IOCP
2934 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2935#endif
1622#if EV_USE_PORT 2936#if EV_USE_PORT
1623 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2937 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1624#endif 2938#endif
1625#if EV_USE_KQUEUE 2939#if EV_USE_KQUEUE
1626 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2940 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2941#endif
2942#if EV_USE_LINUXAIO
2943 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1627#endif 2944#endif
1628#if EV_USE_EPOLL 2945#if EV_USE_EPOLL
1629 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2946 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1630#endif 2947#endif
1631#if EV_USE_POLL 2948#if EV_USE_POLL
1632 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2949 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1633#endif 2950#endif
1634#if EV_USE_SELECT 2951#if EV_USE_SELECT
1635 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2952 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1636#endif 2953#endif
1637 2954
1638 ev_prepare_init (&pending_w, pendingcb); 2955 ev_prepare_init (&pending_w, pendingcb);
1639 2956
2957#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1640 ev_init (&pipe_w, pipecb); 2958 ev_init (&pipe_w, pipecb);
1641 ev_set_priority (&pipe_w, EV_MAXPRI); 2959 ev_set_priority (&pipe_w, EV_MAXPRI);
2960#endif
1642 } 2961 }
1643} 2962}
1644 2963
1645/* free up a loop structure */ 2964/* free up a loop structure */
1646static void noinline 2965ecb_cold
2966void
1647loop_destroy (EV_P) 2967ev_loop_destroy (EV_P)
1648{ 2968{
1649 int i; 2969 int i;
2970
2971#if EV_MULTIPLICITY
2972 /* mimic free (0) */
2973 if (!EV_A)
2974 return;
2975#endif
2976
2977#if EV_CLEANUP_ENABLE
2978 /* queue cleanup watchers (and execute them) */
2979 if (expect_false (cleanupcnt))
2980 {
2981 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2982 EV_INVOKE_PENDING;
2983 }
2984#endif
2985
2986#if EV_CHILD_ENABLE
2987 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2988 {
2989 ev_ref (EV_A); /* child watcher */
2990 ev_signal_stop (EV_A_ &childev);
2991 }
2992#endif
1650 2993
1651 if (ev_is_active (&pipe_w)) 2994 if (ev_is_active (&pipe_w))
1652 { 2995 {
1653 /*ev_ref (EV_A);*/ 2996 /*ev_ref (EV_A);*/
1654 /*ev_io_stop (EV_A_ &pipe_w);*/ 2997 /*ev_io_stop (EV_A_ &pipe_w);*/
1655 2998
1656#if EV_USE_EVENTFD
1657 if (evfd >= 0)
1658 close (evfd);
1659#endif
1660
1661 if (evpipe [0] >= 0)
1662 {
1663 EV_WIN32_CLOSE_FD (evpipe [0]); 2999 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1664 EV_WIN32_CLOSE_FD (evpipe [1]); 3000 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1665 }
1666 } 3001 }
1667 3002
1668#if EV_USE_SIGNALFD 3003#if EV_USE_SIGNALFD
1669 if (ev_is_active (&sigfd_w)) 3004 if (ev_is_active (&sigfd_w))
1670 close (sigfd); 3005 close (sigfd);
… …
1676#endif 3011#endif
1677 3012
1678 if (backend_fd >= 0) 3013 if (backend_fd >= 0)
1679 close (backend_fd); 3014 close (backend_fd);
1680 3015
3016#if EV_USE_IOCP
3017 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3018#endif
1681#if EV_USE_PORT 3019#if EV_USE_PORT
1682 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3020 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1683#endif 3021#endif
1684#if EV_USE_KQUEUE 3022#if EV_USE_KQUEUE
1685 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3023 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3024#endif
3025#if EV_USE_LINUXAIO
3026 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1686#endif 3027#endif
1687#if EV_USE_EPOLL 3028#if EV_USE_EPOLL
1688 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3029 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1689#endif 3030#endif
1690#if EV_USE_POLL 3031#if EV_USE_POLL
1691 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3032 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1692#endif 3033#endif
1693#if EV_USE_SELECT 3034#if EV_USE_SELECT
1694 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3035 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1695#endif 3036#endif
1696 3037
1697 for (i = NUMPRI; i--; ) 3038 for (i = NUMPRI; i--; )
1698 { 3039 {
1699 array_free (pending, [i]); 3040 array_free (pending, [i]);
… …
1712 array_free (periodic, EMPTY); 3053 array_free (periodic, EMPTY);
1713#endif 3054#endif
1714#if EV_FORK_ENABLE 3055#if EV_FORK_ENABLE
1715 array_free (fork, EMPTY); 3056 array_free (fork, EMPTY);
1716#endif 3057#endif
3058#if EV_CLEANUP_ENABLE
3059 array_free (cleanup, EMPTY);
3060#endif
1717 array_free (prepare, EMPTY); 3061 array_free (prepare, EMPTY);
1718 array_free (check, EMPTY); 3062 array_free (check, EMPTY);
1719#if EV_ASYNC_ENABLE 3063#if EV_ASYNC_ENABLE
1720 array_free (async, EMPTY); 3064 array_free (async, EMPTY);
1721#endif 3065#endif
1722 3066
1723 backend = 0; 3067 backend = 0;
3068
3069#if EV_MULTIPLICITY
3070 if (ev_is_default_loop (EV_A))
3071#endif
3072 ev_default_loop_ptr = 0;
3073#if EV_MULTIPLICITY
3074 else
3075 ev_free (EV_A);
3076#endif
1724} 3077}
1725 3078
1726#if EV_USE_INOTIFY 3079#if EV_USE_INOTIFY
1727inline_size void infy_fork (EV_P); 3080inline_size void infy_fork (EV_P);
1728#endif 3081#endif
1729 3082
1730inline_size void 3083inline_size void
1731loop_fork (EV_P) 3084loop_fork (EV_P)
1732{ 3085{
1733#if EV_USE_PORT 3086#if EV_USE_PORT
1734 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3087 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1735#endif 3088#endif
1736#if EV_USE_KQUEUE 3089#if EV_USE_KQUEUE
1737 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3090 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3091#endif
3092#if EV_USE_LINUXAIO
3093 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1738#endif 3094#endif
1739#if EV_USE_EPOLL 3095#if EV_USE_EPOLL
1740 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3096 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1741#endif 3097#endif
1742#if EV_USE_INOTIFY 3098#if EV_USE_INOTIFY
1743 infy_fork (EV_A); 3099 infy_fork (EV_A);
1744#endif 3100#endif
1745 3101
3102#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1746 if (ev_is_active (&pipe_w)) 3103 if (ev_is_active (&pipe_w) && postfork != 2)
1747 { 3104 {
1748 /* this "locks" the handlers against writing to the pipe */ 3105 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1749 /* while we modify the fd vars */
1750 sig_pending = 1;
1751#if EV_ASYNC_ENABLE
1752 async_pending = 1;
1753#endif
1754 3106
1755 ev_ref (EV_A); 3107 ev_ref (EV_A);
1756 ev_io_stop (EV_A_ &pipe_w); 3108 ev_io_stop (EV_A_ &pipe_w);
1757 3109
1758#if EV_USE_EVENTFD
1759 if (evfd >= 0)
1760 close (evfd);
1761#endif
1762
1763 if (evpipe [0] >= 0) 3110 if (evpipe [0] >= 0)
1764 {
1765 EV_WIN32_CLOSE_FD (evpipe [0]); 3111 EV_WIN32_CLOSE_FD (evpipe [0]);
1766 EV_WIN32_CLOSE_FD (evpipe [1]);
1767 }
1768 3112
1769 evpipe_init (EV_A); 3113 evpipe_init (EV_A);
1770 /* now iterate over everything, in case we missed something */ 3114 /* iterate over everything, in case we missed something before */
1771 pipecb (EV_A_ &pipe_w, EV_READ); 3115 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1772 } 3116 }
3117#endif
1773 3118
1774 postfork = 0; 3119 postfork = 0;
1775} 3120}
1776 3121
1777#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
1778 3123
3124ecb_cold
1779struct ev_loop * 3125struct ev_loop *
1780ev_loop_new (unsigned int flags) 3126ev_loop_new (unsigned int flags) EV_NOEXCEPT
1781{ 3127{
1782 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3128 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1783 3129
1784 memset (EV_A, 0, sizeof (struct ev_loop)); 3130 memset (EV_A, 0, sizeof (struct ev_loop));
1785 loop_init (EV_A_ flags); 3131 loop_init (EV_A_ flags);
1786 3132
1787 if (ev_backend (EV_A)) 3133 if (ev_backend (EV_A))
1788 return EV_A; 3134 return EV_A;
1789 3135
3136 ev_free (EV_A);
1790 return 0; 3137 return 0;
1791} 3138}
1792 3139
1793void
1794ev_loop_destroy (EV_P)
1795{
1796 loop_destroy (EV_A);
1797 ev_free (loop);
1798}
1799
1800void
1801ev_loop_fork (EV_P)
1802{
1803 postfork = 1; /* must be in line with ev_default_fork */
1804}
1805#endif /* multiplicity */ 3140#endif /* multiplicity */
1806 3141
1807#if EV_VERIFY 3142#if EV_VERIFY
1808static void noinline 3143noinline ecb_cold
3144static void
1809verify_watcher (EV_P_ W w) 3145verify_watcher (EV_P_ W w)
1810{ 3146{
1811 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3147 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1812 3148
1813 if (w->pending) 3149 if (w->pending)
1814 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3150 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1815} 3151}
1816 3152
1817static void noinline 3153noinline ecb_cold
3154static void
1818verify_heap (EV_P_ ANHE *heap, int N) 3155verify_heap (EV_P_ ANHE *heap, int N)
1819{ 3156{
1820 int i; 3157 int i;
1821 3158
1822 for (i = HEAP0; i < N + HEAP0; ++i) 3159 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1827 3164
1828 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3165 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1829 } 3166 }
1830} 3167}
1831 3168
1832static void noinline 3169noinline ecb_cold
3170static void
1833array_verify (EV_P_ W *ws, int cnt) 3171array_verify (EV_P_ W *ws, int cnt)
1834{ 3172{
1835 while (cnt--) 3173 while (cnt--)
1836 { 3174 {
1837 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3175 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1838 verify_watcher (EV_A_ ws [cnt]); 3176 verify_watcher (EV_A_ ws [cnt]);
1839 } 3177 }
1840} 3178}
1841#endif 3179#endif
1842 3180
1843#if EV_MINIMAL < 2 3181#if EV_FEATURE_API
1844void 3182void ecb_cold
1845ev_loop_verify (EV_P) 3183ev_verify (EV_P) EV_NOEXCEPT
1846{ 3184{
1847#if EV_VERIFY 3185#if EV_VERIFY
1848 int i; 3186 int i;
1849 WL w; 3187 WL w, w2;
1850 3188
1851 assert (activecnt >= -1); 3189 assert (activecnt >= -1);
1852 3190
1853 assert (fdchangemax >= fdchangecnt); 3191 assert (fdchangemax >= fdchangecnt);
1854 for (i = 0; i < fdchangecnt; ++i) 3192 for (i = 0; i < fdchangecnt; ++i)
1855 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3193 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1856 3194
1857 assert (anfdmax >= 0); 3195 assert (anfdmax >= 0);
1858 for (i = 0; i < anfdmax; ++i) 3196 for (i = 0; i < anfdmax; ++i)
3197 {
3198 int j = 0;
3199
1859 for (w = anfds [i].head; w; w = w->next) 3200 for (w = w2 = anfds [i].head; w; w = w->next)
1860 { 3201 {
1861 verify_watcher (EV_A_ (W)w); 3202 verify_watcher (EV_A_ (W)w);
3203
3204 if (j++ & 1)
3205 {
3206 assert (("libev: io watcher list contains a loop", w != w2));
3207 w2 = w2->next;
3208 }
3209
1862 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3210 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1863 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3211 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1864 } 3212 }
3213 }
1865 3214
1866 assert (timermax >= timercnt); 3215 assert (timermax >= timercnt);
1867 verify_heap (EV_A_ timers, timercnt); 3216 verify_heap (EV_A_ timers, timercnt);
1868 3217
1869#if EV_PERIODIC_ENABLE 3218#if EV_PERIODIC_ENABLE
… …
1884#if EV_FORK_ENABLE 3233#if EV_FORK_ENABLE
1885 assert (forkmax >= forkcnt); 3234 assert (forkmax >= forkcnt);
1886 array_verify (EV_A_ (W *)forks, forkcnt); 3235 array_verify (EV_A_ (W *)forks, forkcnt);
1887#endif 3236#endif
1888 3237
3238#if EV_CLEANUP_ENABLE
3239 assert (cleanupmax >= cleanupcnt);
3240 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3241#endif
3242
1889#if EV_ASYNC_ENABLE 3243#if EV_ASYNC_ENABLE
1890 assert (asyncmax >= asynccnt); 3244 assert (asyncmax >= asynccnt);
1891 array_verify (EV_A_ (W *)asyncs, asynccnt); 3245 array_verify (EV_A_ (W *)asyncs, asynccnt);
1892#endif 3246#endif
1893 3247
3248#if EV_PREPARE_ENABLE
1894 assert (preparemax >= preparecnt); 3249 assert (preparemax >= preparecnt);
1895 array_verify (EV_A_ (W *)prepares, preparecnt); 3250 array_verify (EV_A_ (W *)prepares, preparecnt);
3251#endif
1896 3252
3253#if EV_CHECK_ENABLE
1897 assert (checkmax >= checkcnt); 3254 assert (checkmax >= checkcnt);
1898 array_verify (EV_A_ (W *)checks, checkcnt); 3255 array_verify (EV_A_ (W *)checks, checkcnt);
3256#endif
1899 3257
1900# if 0 3258# if 0
3259#if EV_CHILD_ENABLE
1901 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3260 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1902 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3261 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3262#endif
1903# endif 3263# endif
1904#endif 3264#endif
1905} 3265}
1906#endif 3266#endif
1907 3267
1908#if EV_MULTIPLICITY 3268#if EV_MULTIPLICITY
3269ecb_cold
1909struct ev_loop * 3270struct ev_loop *
1910ev_default_loop_init (unsigned int flags)
1911#else 3271#else
1912int 3272int
3273#endif
1913ev_default_loop (unsigned int flags) 3274ev_default_loop (unsigned int flags) EV_NOEXCEPT
1914#endif
1915{ 3275{
1916 if (!ev_default_loop_ptr) 3276 if (!ev_default_loop_ptr)
1917 { 3277 {
1918#if EV_MULTIPLICITY 3278#if EV_MULTIPLICITY
1919 EV_P = ev_default_loop_ptr = &default_loop_struct; 3279 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1923 3283
1924 loop_init (EV_A_ flags); 3284 loop_init (EV_A_ flags);
1925 3285
1926 if (ev_backend (EV_A)) 3286 if (ev_backend (EV_A))
1927 { 3287 {
1928#ifndef _WIN32 3288#if EV_CHILD_ENABLE
1929 ev_signal_init (&childev, childcb, SIGCHLD); 3289 ev_signal_init (&childev, childcb, SIGCHLD);
1930 ev_set_priority (&childev, EV_MAXPRI); 3290 ev_set_priority (&childev, EV_MAXPRI);
1931 ev_signal_start (EV_A_ &childev); 3291 ev_signal_start (EV_A_ &childev);
1932 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3292 ev_unref (EV_A); /* child watcher should not keep loop alive */
1933#endif 3293#endif
… …
1938 3298
1939 return ev_default_loop_ptr; 3299 return ev_default_loop_ptr;
1940} 3300}
1941 3301
1942void 3302void
1943ev_default_destroy (void) 3303ev_loop_fork (EV_P) EV_NOEXCEPT
1944{ 3304{
1945#if EV_MULTIPLICITY 3305 postfork = 1;
1946 EV_P = ev_default_loop_ptr;
1947#endif
1948
1949 ev_default_loop_ptr = 0;
1950
1951#ifndef _WIN32
1952 ev_ref (EV_A); /* child watcher */
1953 ev_signal_stop (EV_A_ &childev);
1954#endif
1955
1956 loop_destroy (EV_A);
1957}
1958
1959void
1960ev_default_fork (void)
1961{
1962#if EV_MULTIPLICITY
1963 EV_P = ev_default_loop_ptr;
1964#endif
1965
1966 postfork = 1; /* must be in line with ev_loop_fork */
1967} 3306}
1968 3307
1969/*****************************************************************************/ 3308/*****************************************************************************/
1970 3309
1971void 3310void
… …
1973{ 3312{
1974 EV_CB_INVOKE ((W)w, revents); 3313 EV_CB_INVOKE ((W)w, revents);
1975} 3314}
1976 3315
1977unsigned int 3316unsigned int
1978ev_pending_count (EV_P) 3317ev_pending_count (EV_P) EV_NOEXCEPT
1979{ 3318{
1980 int pri; 3319 int pri;
1981 unsigned int count = 0; 3320 unsigned int count = 0;
1982 3321
1983 for (pri = NUMPRI; pri--; ) 3322 for (pri = NUMPRI; pri--; )
1984 count += pendingcnt [pri]; 3323 count += pendingcnt [pri];
1985 3324
1986 return count; 3325 return count;
1987} 3326}
1988 3327
1989void noinline 3328noinline
3329void
1990ev_invoke_pending (EV_P) 3330ev_invoke_pending (EV_P)
1991{ 3331{
1992 int pri; 3332 pendingpri = NUMPRI;
1993 3333
1994 for (pri = NUMPRI; pri--; ) 3334 do
3335 {
3336 --pendingpri;
3337
3338 /* pendingpri possibly gets modified in the inner loop */
1995 while (pendingcnt [pri]) 3339 while (pendingcnt [pendingpri])
1996 { 3340 {
1997 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3341 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1998 3342
1999 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2000 /* ^ this is no longer true, as pending_w could be here */
2001
2002 p->w->pending = 0; 3343 p->w->pending = 0;
2003 EV_CB_INVOKE (p->w, p->events); 3344 EV_CB_INVOKE (p->w, p->events);
2004 EV_FREQUENT_CHECK; 3345 EV_FREQUENT_CHECK;
2005 } 3346 }
3347 }
3348 while (pendingpri);
2006} 3349}
2007 3350
2008#if EV_IDLE_ENABLE 3351#if EV_IDLE_ENABLE
2009/* make idle watchers pending. this handles the "call-idle */ 3352/* make idle watchers pending. this handles the "call-idle */
2010/* only when higher priorities are idle" logic */ 3353/* only when higher priorities are idle" logic */
… …
2062 EV_FREQUENT_CHECK; 3405 EV_FREQUENT_CHECK;
2063 feed_reverse (EV_A_ (W)w); 3406 feed_reverse (EV_A_ (W)w);
2064 } 3407 }
2065 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3408 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2066 3409
2067 feed_reverse_done (EV_A_ EV_TIMEOUT); 3410 feed_reverse_done (EV_A_ EV_TIMER);
2068 } 3411 }
2069} 3412}
2070 3413
2071#if EV_PERIODIC_ENABLE 3414#if EV_PERIODIC_ENABLE
3415
3416noinline
3417static void
3418periodic_recalc (EV_P_ ev_periodic *w)
3419{
3420 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3421 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3422
3423 /* the above almost always errs on the low side */
3424 while (at <= ev_rt_now)
3425 {
3426 ev_tstamp nat = at + w->interval;
3427
3428 /* when resolution fails us, we use ev_rt_now */
3429 if (expect_false (nat == at))
3430 {
3431 at = ev_rt_now;
3432 break;
3433 }
3434
3435 at = nat;
3436 }
3437
3438 ev_at (w) = at;
3439}
3440
2072/* make periodics pending */ 3441/* make periodics pending */
2073inline_size void 3442inline_size void
2074periodics_reify (EV_P) 3443periodics_reify (EV_P)
2075{ 3444{
2076 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2077 3446
2078 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3447 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2079 { 3448 {
2080 int feed_count = 0;
2081
2082 do 3449 do
2083 { 3450 {
2084 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3451 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2085 3452
2086 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3453 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2095 ANHE_at_cache (periodics [HEAP0]); 3462 ANHE_at_cache (periodics [HEAP0]);
2096 downheap (periodics, periodiccnt, HEAP0); 3463 downheap (periodics, periodiccnt, HEAP0);
2097 } 3464 }
2098 else if (w->interval) 3465 else if (w->interval)
2099 { 3466 {
2100 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3467 periodic_recalc (EV_A_ w);
2101 /* if next trigger time is not sufficiently in the future, put it there */
2102 /* this might happen because of floating point inexactness */
2103 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2104 {
2105 ev_at (w) += w->interval;
2106
2107 /* if interval is unreasonably low we might still have a time in the past */
2108 /* so correct this. this will make the periodic very inexact, but the user */
2109 /* has effectively asked to get triggered more often than possible */
2110 if (ev_at (w) < ev_rt_now)
2111 ev_at (w) = ev_rt_now;
2112 }
2113
2114 ANHE_at_cache (periodics [HEAP0]); 3468 ANHE_at_cache (periodics [HEAP0]);
2115 downheap (periodics, periodiccnt, HEAP0); 3469 downheap (periodics, periodiccnt, HEAP0);
2116 } 3470 }
2117 else 3471 else
2118 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3472 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2125 feed_reverse_done (EV_A_ EV_PERIODIC); 3479 feed_reverse_done (EV_A_ EV_PERIODIC);
2126 } 3480 }
2127} 3481}
2128 3482
2129/* simply recalculate all periodics */ 3483/* simply recalculate all periodics */
2130/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3484/* TODO: maybe ensure that at least one event happens when jumping forward? */
2131static void noinline 3485noinline ecb_cold
3486static void
2132periodics_reschedule (EV_P) 3487periodics_reschedule (EV_P)
2133{ 3488{
2134 int i; 3489 int i;
2135 3490
2136 /* adjust periodics after time jump */ 3491 /* adjust periodics after time jump */
… …
2139 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3494 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2140 3495
2141 if (w->reschedule_cb) 3496 if (w->reschedule_cb)
2142 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3497 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2143 else if (w->interval) 3498 else if (w->interval)
2144 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3499 periodic_recalc (EV_A_ w);
2145 3500
2146 ANHE_at_cache (periodics [i]); 3501 ANHE_at_cache (periodics [i]);
2147 } 3502 }
2148 3503
2149 reheap (periodics, periodiccnt); 3504 reheap (periodics, periodiccnt);
2150} 3505}
2151#endif 3506#endif
2152 3507
2153/* adjust all timers by a given offset */ 3508/* adjust all timers by a given offset */
2154static void noinline 3509noinline ecb_cold
3510static void
2155timers_reschedule (EV_P_ ev_tstamp adjust) 3511timers_reschedule (EV_P_ ev_tstamp adjust)
2156{ 3512{
2157 int i; 3513 int i;
2158 3514
2159 for (i = 0; i < timercnt; ++i) 3515 for (i = 0; i < timercnt; ++i)
… …
2196 * doesn't hurt either as we only do this on time-jumps or 3552 * doesn't hurt either as we only do this on time-jumps or
2197 * in the unlikely event of having been preempted here. 3553 * in the unlikely event of having been preempted here.
2198 */ 3554 */
2199 for (i = 4; --i; ) 3555 for (i = 4; --i; )
2200 { 3556 {
3557 ev_tstamp diff;
2201 rtmn_diff = ev_rt_now - mn_now; 3558 rtmn_diff = ev_rt_now - mn_now;
2202 3559
3560 diff = odiff - rtmn_diff;
3561
2203 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3562 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2204 return; /* all is well */ 3563 return; /* all is well */
2205 3564
2206 ev_rt_now = ev_time (); 3565 ev_rt_now = ev_time ();
2207 mn_now = get_clock (); 3566 mn_now = get_clock ();
2208 now_floor = mn_now; 3567 now_floor = mn_now;
… …
2230 3589
2231 mn_now = ev_rt_now; 3590 mn_now = ev_rt_now;
2232 } 3591 }
2233} 3592}
2234 3593
2235void 3594int
2236ev_loop (EV_P_ int flags) 3595ev_run (EV_P_ int flags)
2237{ 3596{
2238#if EV_MINIMAL < 2 3597#if EV_FEATURE_API
2239 ++loop_depth; 3598 ++loop_depth;
2240#endif 3599#endif
2241 3600
2242 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3601 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2243 3602
2244 loop_done = EVUNLOOP_CANCEL; 3603 loop_done = EVBREAK_CANCEL;
2245 3604
2246 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3605 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2247 3606
2248 do 3607 do
2249 { 3608 {
2250#if EV_VERIFY >= 2 3609#if EV_VERIFY >= 2
2251 ev_loop_verify (EV_A); 3610 ev_verify (EV_A);
2252#endif 3611#endif
2253 3612
2254#ifndef _WIN32 3613#ifndef _WIN32
2255 if (expect_false (curpid)) /* penalise the forking check even more */ 3614 if (expect_false (curpid)) /* penalise the forking check even more */
2256 if (expect_false (getpid () != curpid)) 3615 if (expect_false (getpid () != curpid))
… …
2268 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3627 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2269 EV_INVOKE_PENDING; 3628 EV_INVOKE_PENDING;
2270 } 3629 }
2271#endif 3630#endif
2272 3631
3632#if EV_PREPARE_ENABLE
2273 /* queue prepare watchers (and execute them) */ 3633 /* queue prepare watchers (and execute them) */
2274 if (expect_false (preparecnt)) 3634 if (expect_false (preparecnt))
2275 { 3635 {
2276 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3636 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2277 EV_INVOKE_PENDING; 3637 EV_INVOKE_PENDING;
2278 } 3638 }
3639#endif
2279 3640
2280 if (expect_false (loop_done)) 3641 if (expect_false (loop_done))
2281 break; 3642 break;
2282 3643
2283 /* we might have forked, so reify kernel state if necessary */ 3644 /* we might have forked, so reify kernel state if necessary */
… …
2290 /* calculate blocking time */ 3651 /* calculate blocking time */
2291 { 3652 {
2292 ev_tstamp waittime = 0.; 3653 ev_tstamp waittime = 0.;
2293 ev_tstamp sleeptime = 0.; 3654 ev_tstamp sleeptime = 0.;
2294 3655
3656 /* remember old timestamp for io_blocktime calculation */
3657 ev_tstamp prev_mn_now = mn_now;
3658
3659 /* update time to cancel out callback processing overhead */
3660 time_update (EV_A_ 1e100);
3661
3662 /* from now on, we want a pipe-wake-up */
3663 pipe_write_wanted = 1;
3664
3665 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3666
2295 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3667 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2296 { 3668 {
2297 /* remember old timestamp for io_blocktime calculation */
2298 ev_tstamp prev_mn_now = mn_now;
2299
2300 /* update time to cancel out callback processing overhead */
2301 time_update (EV_A_ 1e100);
2302
2303 waittime = MAX_BLOCKTIME; 3669 waittime = MAX_BLOCKTIME;
2304 3670
2305 if (timercnt) 3671 if (timercnt)
2306 { 3672 {
2307 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3673 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2308 if (waittime > to) waittime = to; 3674 if (waittime > to) waittime = to;
2309 } 3675 }
2310 3676
2311#if EV_PERIODIC_ENABLE 3677#if EV_PERIODIC_ENABLE
2312 if (periodiccnt) 3678 if (periodiccnt)
2313 { 3679 {
2314 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3680 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2315 if (waittime > to) waittime = to; 3681 if (waittime > to) waittime = to;
2316 } 3682 }
2317#endif 3683#endif
2318 3684
2319 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3685 /* don't let timeouts decrease the waittime below timeout_blocktime */
2320 if (expect_false (waittime < timeout_blocktime)) 3686 if (expect_false (waittime < timeout_blocktime))
2321 waittime = timeout_blocktime; 3687 waittime = timeout_blocktime;
3688
3689 /* at this point, we NEED to wait, so we have to ensure */
3690 /* to pass a minimum nonzero value to the backend */
3691 if (expect_false (waittime < backend_mintime))
3692 waittime = backend_mintime;
2322 3693
2323 /* extra check because io_blocktime is commonly 0 */ 3694 /* extra check because io_blocktime is commonly 0 */
2324 if (expect_false (io_blocktime)) 3695 if (expect_false (io_blocktime))
2325 { 3696 {
2326 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3697 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2327 3698
2328 if (sleeptime > waittime - backend_fudge) 3699 if (sleeptime > waittime - backend_mintime)
2329 sleeptime = waittime - backend_fudge; 3700 sleeptime = waittime - backend_mintime;
2330 3701
2331 if (expect_true (sleeptime > 0.)) 3702 if (expect_true (sleeptime > 0.))
2332 { 3703 {
2333 ev_sleep (sleeptime); 3704 ev_sleep (sleeptime);
2334 waittime -= sleeptime; 3705 waittime -= sleeptime;
2335 } 3706 }
2336 } 3707 }
2337 } 3708 }
2338 3709
2339#if EV_MINIMAL < 2 3710#if EV_FEATURE_API
2340 ++loop_count; 3711 ++loop_count;
2341#endif 3712#endif
2342 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3713 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2343 backend_poll (EV_A_ waittime); 3714 backend_poll (EV_A_ waittime);
2344 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3715 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3716
3717 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3718
3719 ECB_MEMORY_FENCE_ACQUIRE;
3720 if (pipe_write_skipped)
3721 {
3722 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3723 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3724 }
3725
2345 3726
2346 /* update ev_rt_now, do magic */ 3727 /* update ev_rt_now, do magic */
2347 time_update (EV_A_ waittime + sleeptime); 3728 time_update (EV_A_ waittime + sleeptime);
2348 } 3729 }
2349 3730
… …
2356#if EV_IDLE_ENABLE 3737#if EV_IDLE_ENABLE
2357 /* queue idle watchers unless other events are pending */ 3738 /* queue idle watchers unless other events are pending */
2358 idle_reify (EV_A); 3739 idle_reify (EV_A);
2359#endif 3740#endif
2360 3741
3742#if EV_CHECK_ENABLE
2361 /* queue check watchers, to be executed first */ 3743 /* queue check watchers, to be executed first */
2362 if (expect_false (checkcnt)) 3744 if (expect_false (checkcnt))
2363 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3745 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3746#endif
2364 3747
2365 EV_INVOKE_PENDING; 3748 EV_INVOKE_PENDING;
2366 } 3749 }
2367 while (expect_true ( 3750 while (expect_true (
2368 activecnt 3751 activecnt
2369 && !loop_done 3752 && !loop_done
2370 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3753 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2371 )); 3754 ));
2372 3755
2373 if (loop_done == EVUNLOOP_ONE) 3756 if (loop_done == EVBREAK_ONE)
2374 loop_done = EVUNLOOP_CANCEL; 3757 loop_done = EVBREAK_CANCEL;
2375 3758
2376#if EV_MINIMAL < 2 3759#if EV_FEATURE_API
2377 --loop_depth; 3760 --loop_depth;
2378#endif 3761#endif
2379}
2380 3762
3763 return activecnt;
3764}
3765
2381void 3766void
2382ev_unloop (EV_P_ int how) 3767ev_break (EV_P_ int how) EV_NOEXCEPT
2383{ 3768{
2384 loop_done = how; 3769 loop_done = how;
2385} 3770}
2386 3771
2387void 3772void
2388ev_ref (EV_P) 3773ev_ref (EV_P) EV_NOEXCEPT
2389{ 3774{
2390 ++activecnt; 3775 ++activecnt;
2391} 3776}
2392 3777
2393void 3778void
2394ev_unref (EV_P) 3779ev_unref (EV_P) EV_NOEXCEPT
2395{ 3780{
2396 --activecnt; 3781 --activecnt;
2397} 3782}
2398 3783
2399void 3784void
2400ev_now_update (EV_P) 3785ev_now_update (EV_P) EV_NOEXCEPT
2401{ 3786{
2402 time_update (EV_A_ 1e100); 3787 time_update (EV_A_ 1e100);
2403} 3788}
2404 3789
2405void 3790void
2406ev_suspend (EV_P) 3791ev_suspend (EV_P) EV_NOEXCEPT
2407{ 3792{
2408 ev_now_update (EV_A); 3793 ev_now_update (EV_A);
2409} 3794}
2410 3795
2411void 3796void
2412ev_resume (EV_P) 3797ev_resume (EV_P) EV_NOEXCEPT
2413{ 3798{
2414 ev_tstamp mn_prev = mn_now; 3799 ev_tstamp mn_prev = mn_now;
2415 3800
2416 ev_now_update (EV_A); 3801 ev_now_update (EV_A);
2417 timers_reschedule (EV_A_ mn_now - mn_prev); 3802 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2456 w->pending = 0; 3841 w->pending = 0;
2457 } 3842 }
2458} 3843}
2459 3844
2460int 3845int
2461ev_clear_pending (EV_P_ void *w) 3846ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2462{ 3847{
2463 W w_ = (W)w; 3848 W w_ = (W)w;
2464 int pending = w_->pending; 3849 int pending = w_->pending;
2465 3850
2466 if (expect_true (pending)) 3851 if (expect_true (pending))
… …
2498 w->active = 0; 3883 w->active = 0;
2499} 3884}
2500 3885
2501/*****************************************************************************/ 3886/*****************************************************************************/
2502 3887
2503void noinline 3888noinline
3889void
2504ev_io_start (EV_P_ ev_io *w) 3890ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2505{ 3891{
2506 int fd = w->fd; 3892 int fd = w->fd;
2507 3893
2508 if (expect_false (ev_is_active (w))) 3894 if (expect_false (ev_is_active (w)))
2509 return; 3895 return;
2510 3896
2511 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3897 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2512 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3898 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2513 3899
2514 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
2515 3901
2516 ev_start (EV_A_ (W)w, 1); 3902 ev_start (EV_A_ (W)w, 1);
2517 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3903 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2518 wlist_add (&anfds[fd].head, (WL)w); 3904 wlist_add (&anfds[fd].head, (WL)w);
3905
3906 /* common bug, apparently */
3907 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2519 3908
2520 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3909 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2521 w->events &= ~EV__IOFDSET; 3910 w->events &= ~EV__IOFDSET;
2522 3911
2523 EV_FREQUENT_CHECK; 3912 EV_FREQUENT_CHECK;
2524} 3913}
2525 3914
2526void noinline 3915noinline
3916void
2527ev_io_stop (EV_P_ ev_io *w) 3917ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2528{ 3918{
2529 clear_pending (EV_A_ (W)w); 3919 clear_pending (EV_A_ (W)w);
2530 if (expect_false (!ev_is_active (w))) 3920 if (expect_false (!ev_is_active (w)))
2531 return; 3921 return;
2532 3922
… …
2535 EV_FREQUENT_CHECK; 3925 EV_FREQUENT_CHECK;
2536 3926
2537 wlist_del (&anfds[w->fd].head, (WL)w); 3927 wlist_del (&anfds[w->fd].head, (WL)w);
2538 ev_stop (EV_A_ (W)w); 3928 ev_stop (EV_A_ (W)w);
2539 3929
2540 fd_change (EV_A_ w->fd, 1); 3930 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2541 3931
2542 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
2543} 3933}
2544 3934
2545void noinline 3935noinline
3936void
2546ev_timer_start (EV_P_ ev_timer *w) 3937ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2547{ 3938{
2548 if (expect_false (ev_is_active (w))) 3939 if (expect_false (ev_is_active (w)))
2549 return; 3940 return;
2550 3941
2551 ev_at (w) += mn_now; 3942 ev_at (w) += mn_now;
… …
2554 3945
2555 EV_FREQUENT_CHECK; 3946 EV_FREQUENT_CHECK;
2556 3947
2557 ++timercnt; 3948 ++timercnt;
2558 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3949 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2559 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3950 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2560 ANHE_w (timers [ev_active (w)]) = (WT)w; 3951 ANHE_w (timers [ev_active (w)]) = (WT)w;
2561 ANHE_at_cache (timers [ev_active (w)]); 3952 ANHE_at_cache (timers [ev_active (w)]);
2562 upheap (timers, ev_active (w)); 3953 upheap (timers, ev_active (w));
2563 3954
2564 EV_FREQUENT_CHECK; 3955 EV_FREQUENT_CHECK;
2565 3956
2566 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3957 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2567} 3958}
2568 3959
2569void noinline 3960noinline
3961void
2570ev_timer_stop (EV_P_ ev_timer *w) 3962ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2571{ 3963{
2572 clear_pending (EV_A_ (W)w); 3964 clear_pending (EV_A_ (W)w);
2573 if (expect_false (!ev_is_active (w))) 3965 if (expect_false (!ev_is_active (w)))
2574 return; 3966 return;
2575 3967
… …
2587 timers [active] = timers [timercnt + HEAP0]; 3979 timers [active] = timers [timercnt + HEAP0];
2588 adjustheap (timers, timercnt, active); 3980 adjustheap (timers, timercnt, active);
2589 } 3981 }
2590 } 3982 }
2591 3983
2592 EV_FREQUENT_CHECK;
2593
2594 ev_at (w) -= mn_now; 3984 ev_at (w) -= mn_now;
2595 3985
2596 ev_stop (EV_A_ (W)w); 3986 ev_stop (EV_A_ (W)w);
2597}
2598 3987
3988 EV_FREQUENT_CHECK;
3989}
3990
2599void noinline 3991noinline
3992void
2600ev_timer_again (EV_P_ ev_timer *w) 3993ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2601{ 3994{
2602 EV_FREQUENT_CHECK; 3995 EV_FREQUENT_CHECK;
3996
3997 clear_pending (EV_A_ (W)w);
2603 3998
2604 if (ev_is_active (w)) 3999 if (ev_is_active (w))
2605 { 4000 {
2606 if (w->repeat) 4001 if (w->repeat)
2607 { 4002 {
… …
2620 4015
2621 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
2622} 4017}
2623 4018
2624ev_tstamp 4019ev_tstamp
2625ev_timer_remaining (EV_P_ ev_timer *w) 4020ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2626{ 4021{
2627 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4022 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2628} 4023}
2629 4024
2630#if EV_PERIODIC_ENABLE 4025#if EV_PERIODIC_ENABLE
2631void noinline 4026noinline
4027void
2632ev_periodic_start (EV_P_ ev_periodic *w) 4028ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2633{ 4029{
2634 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
2635 return; 4031 return;
2636 4032
2637 if (w->reschedule_cb) 4033 if (w->reschedule_cb)
2638 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4034 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2639 else if (w->interval) 4035 else if (w->interval)
2640 { 4036 {
2641 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4037 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2642 /* this formula differs from the one in periodic_reify because we do not always round up */ 4038 periodic_recalc (EV_A_ w);
2643 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2644 } 4039 }
2645 else 4040 else
2646 ev_at (w) = w->offset; 4041 ev_at (w) = w->offset;
2647 4042
2648 EV_FREQUENT_CHECK; 4043 EV_FREQUENT_CHECK;
2649 4044
2650 ++periodiccnt; 4045 ++periodiccnt;
2651 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4046 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2652 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4047 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2653 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4048 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2654 ANHE_at_cache (periodics [ev_active (w)]); 4049 ANHE_at_cache (periodics [ev_active (w)]);
2655 upheap (periodics, ev_active (w)); 4050 upheap (periodics, ev_active (w));
2656 4051
2657 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
2658 4053
2659 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4054 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2660} 4055}
2661 4056
2662void noinline 4057noinline
4058void
2663ev_periodic_stop (EV_P_ ev_periodic *w) 4059ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2664{ 4060{
2665 clear_pending (EV_A_ (W)w); 4061 clear_pending (EV_A_ (W)w);
2666 if (expect_false (!ev_is_active (w))) 4062 if (expect_false (!ev_is_active (w)))
2667 return; 4063 return;
2668 4064
… …
2680 periodics [active] = periodics [periodiccnt + HEAP0]; 4076 periodics [active] = periodics [periodiccnt + HEAP0];
2681 adjustheap (periodics, periodiccnt, active); 4077 adjustheap (periodics, periodiccnt, active);
2682 } 4078 }
2683 } 4079 }
2684 4080
2685 EV_FREQUENT_CHECK;
2686
2687 ev_stop (EV_A_ (W)w); 4081 ev_stop (EV_A_ (W)w);
2688}
2689 4082
4083 EV_FREQUENT_CHECK;
4084}
4085
2690void noinline 4086noinline
4087void
2691ev_periodic_again (EV_P_ ev_periodic *w) 4088ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2692{ 4089{
2693 /* TODO: use adjustheap and recalculation */ 4090 /* TODO: use adjustheap and recalculation */
2694 ev_periodic_stop (EV_A_ w); 4091 ev_periodic_stop (EV_A_ w);
2695 ev_periodic_start (EV_A_ w); 4092 ev_periodic_start (EV_A_ w);
2696} 4093}
… …
2698 4095
2699#ifndef SA_RESTART 4096#ifndef SA_RESTART
2700# define SA_RESTART 0 4097# define SA_RESTART 0
2701#endif 4098#endif
2702 4099
4100#if EV_SIGNAL_ENABLE
4101
2703void noinline 4102noinline
4103void
2704ev_signal_start (EV_P_ ev_signal *w) 4104ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2705{ 4105{
2706 if (expect_false (ev_is_active (w))) 4106 if (expect_false (ev_is_active (w)))
2707 return; 4107 return;
2708 4108
2709 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4109 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2711#if EV_MULTIPLICITY 4111#if EV_MULTIPLICITY
2712 assert (("libev: a signal must not be attached to two different loops", 4112 assert (("libev: a signal must not be attached to two different loops",
2713 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4113 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2714 4114
2715 signals [w->signum - 1].loop = EV_A; 4115 signals [w->signum - 1].loop = EV_A;
4116 ECB_MEMORY_FENCE_RELEASE;
2716#endif 4117#endif
2717 4118
2718 EV_FREQUENT_CHECK; 4119 EV_FREQUENT_CHECK;
2719 4120
2720#if EV_USE_SIGNALFD 4121#if EV_USE_SIGNALFD
… …
2767 sa.sa_handler = ev_sighandler; 4168 sa.sa_handler = ev_sighandler;
2768 sigfillset (&sa.sa_mask); 4169 sigfillset (&sa.sa_mask);
2769 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4170 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2770 sigaction (w->signum, &sa, 0); 4171 sigaction (w->signum, &sa, 0);
2771 4172
4173 if (origflags & EVFLAG_NOSIGMASK)
4174 {
2772 sigemptyset (&sa.sa_mask); 4175 sigemptyset (&sa.sa_mask);
2773 sigaddset (&sa.sa_mask, w->signum); 4176 sigaddset (&sa.sa_mask, w->signum);
2774 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4177 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4178 }
2775#endif 4179#endif
2776 } 4180 }
2777 4181
2778 EV_FREQUENT_CHECK; 4182 EV_FREQUENT_CHECK;
2779} 4183}
2780 4184
2781void noinline 4185noinline
4186void
2782ev_signal_stop (EV_P_ ev_signal *w) 4187ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2783{ 4188{
2784 clear_pending (EV_A_ (W)w); 4189 clear_pending (EV_A_ (W)w);
2785 if (expect_false (!ev_is_active (w))) 4190 if (expect_false (!ev_is_active (w)))
2786 return; 4191 return;
2787 4192
… …
2813 } 4218 }
2814 4219
2815 EV_FREQUENT_CHECK; 4220 EV_FREQUENT_CHECK;
2816} 4221}
2817 4222
4223#endif
4224
4225#if EV_CHILD_ENABLE
4226
2818void 4227void
2819ev_child_start (EV_P_ ev_child *w) 4228ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2820{ 4229{
2821#if EV_MULTIPLICITY 4230#if EV_MULTIPLICITY
2822 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4231 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2823#endif 4232#endif
2824 if (expect_false (ev_is_active (w))) 4233 if (expect_false (ev_is_active (w)))
2825 return; 4234 return;
2826 4235
2827 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
2828 4237
2829 ev_start (EV_A_ (W)w, 1); 4238 ev_start (EV_A_ (W)w, 1);
2830 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4239 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2831 4240
2832 EV_FREQUENT_CHECK; 4241 EV_FREQUENT_CHECK;
2833} 4242}
2834 4243
2835void 4244void
2836ev_child_stop (EV_P_ ev_child *w) 4245ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2837{ 4246{
2838 clear_pending (EV_A_ (W)w); 4247 clear_pending (EV_A_ (W)w);
2839 if (expect_false (!ev_is_active (w))) 4248 if (expect_false (!ev_is_active (w)))
2840 return; 4249 return;
2841 4250
2842 EV_FREQUENT_CHECK; 4251 EV_FREQUENT_CHECK;
2843 4252
2844 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4253 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2845 ev_stop (EV_A_ (W)w); 4254 ev_stop (EV_A_ (W)w);
2846 4255
2847 EV_FREQUENT_CHECK; 4256 EV_FREQUENT_CHECK;
2848} 4257}
4258
4259#endif
2849 4260
2850#if EV_STAT_ENABLE 4261#if EV_STAT_ENABLE
2851 4262
2852# ifdef _WIN32 4263# ifdef _WIN32
2853# undef lstat 4264# undef lstat
… …
2856 4267
2857#define DEF_STAT_INTERVAL 5.0074891 4268#define DEF_STAT_INTERVAL 5.0074891
2858#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4269#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2859#define MIN_STAT_INTERVAL 0.1074891 4270#define MIN_STAT_INTERVAL 0.1074891
2860 4271
2861static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4272noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2862 4273
2863#if EV_USE_INOTIFY 4274#if EV_USE_INOTIFY
2864# define EV_INOTIFY_BUFSIZE 8192
2865 4275
2866static void noinline 4276/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4277# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4278
4279noinline
4280static void
2867infy_add (EV_P_ ev_stat *w) 4281infy_add (EV_P_ ev_stat *w)
2868{ 4282{
2869 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); 4283 w->wd = inotify_add_watch (fs_fd, w->path,
4284 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4285 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4286 | IN_DONT_FOLLOW | IN_MASK_ADD);
2870 4287
2871 if (w->wd >= 0) 4288 if (w->wd >= 0)
2872 { 4289 {
2873 struct statfs sfs; 4290 struct statfs sfs;
2874 4291
… …
2878 4295
2879 if (!fs_2625) 4296 if (!fs_2625)
2880 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4297 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2881 else if (!statfs (w->path, &sfs) 4298 else if (!statfs (w->path, &sfs)
2882 && (sfs.f_type == 0x1373 /* devfs */ 4299 && (sfs.f_type == 0x1373 /* devfs */
4300 || sfs.f_type == 0x4006 /* fat */
4301 || sfs.f_type == 0x4d44 /* msdos */
2883 || sfs.f_type == 0xEF53 /* ext2/3 */ 4302 || sfs.f_type == 0xEF53 /* ext2/3 */
4303 || sfs.f_type == 0x72b6 /* jffs2 */
4304 || sfs.f_type == 0x858458f6 /* ramfs */
4305 || sfs.f_type == 0x5346544e /* ntfs */
2884 || sfs.f_type == 0x3153464a /* jfs */ 4306 || sfs.f_type == 0x3153464a /* jfs */
4307 || sfs.f_type == 0x9123683e /* btrfs */
2885 || sfs.f_type == 0x52654973 /* reiser3 */ 4308 || sfs.f_type == 0x52654973 /* reiser3 */
2886 || sfs.f_type == 0x01021994 /* tempfs */ 4309 || sfs.f_type == 0x01021994 /* tmpfs */
2887 || sfs.f_type == 0x58465342 /* xfs */)) 4310 || sfs.f_type == 0x58465342 /* xfs */))
2888 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4311 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2889 else 4312 else
2890 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4313 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2891 } 4314 }
… …
2912 if (!pend || pend == path) 4335 if (!pend || pend == path)
2913 break; 4336 break;
2914 4337
2915 *pend = 0; 4338 *pend = 0;
2916 w->wd = inotify_add_watch (fs_fd, path, mask); 4339 w->wd = inotify_add_watch (fs_fd, path, mask);
2917 } 4340 }
2918 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4341 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2919 } 4342 }
2920 } 4343 }
2921 4344
2922 if (w->wd >= 0) 4345 if (w->wd >= 0)
2923 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4346 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2924 4347
2925 /* now re-arm timer, if required */ 4348 /* now re-arm timer, if required */
2926 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4349 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2927 ev_timer_again (EV_A_ &w->timer); 4350 ev_timer_again (EV_A_ &w->timer);
2928 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4351 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2929} 4352}
2930 4353
2931static void noinline 4354noinline
4355static void
2932infy_del (EV_P_ ev_stat *w) 4356infy_del (EV_P_ ev_stat *w)
2933{ 4357{
2934 int slot; 4358 int slot;
2935 int wd = w->wd; 4359 int wd = w->wd;
2936 4360
2937 if (wd < 0) 4361 if (wd < 0)
2938 return; 4362 return;
2939 4363
2940 w->wd = -2; 4364 w->wd = -2;
2941 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4365 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2942 wlist_del (&fs_hash [slot].head, (WL)w); 4366 wlist_del (&fs_hash [slot].head, (WL)w);
2943 4367
2944 /* remove this watcher, if others are watching it, they will rearm */ 4368 /* remove this watcher, if others are watching it, they will rearm */
2945 inotify_rm_watch (fs_fd, wd); 4369 inotify_rm_watch (fs_fd, wd);
2946} 4370}
2947 4371
2948static void noinline 4372noinline
4373static void
2949infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4374infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2950{ 4375{
2951 if (slot < 0) 4376 if (slot < 0)
2952 /* overflow, need to check for all hash slots */ 4377 /* overflow, need to check for all hash slots */
2953 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4378 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2954 infy_wd (EV_A_ slot, wd, ev); 4379 infy_wd (EV_A_ slot, wd, ev);
2955 else 4380 else
2956 { 4381 {
2957 WL w_; 4382 WL w_;
2958 4383
2959 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4384 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2960 { 4385 {
2961 ev_stat *w = (ev_stat *)w_; 4386 ev_stat *w = (ev_stat *)w_;
2962 w_ = w_->next; /* lets us remove this watcher and all before it */ 4387 w_ = w_->next; /* lets us remove this watcher and all before it */
2963 4388
2964 if (w->wd == wd || wd == -1) 4389 if (w->wd == wd || wd == -1)
2965 { 4390 {
2966 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4391 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2967 { 4392 {
2968 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4393 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2969 w->wd = -1; 4394 w->wd = -1;
2970 infy_add (EV_A_ w); /* re-add, no matter what */ 4395 infy_add (EV_A_ w); /* re-add, no matter what */
2971 } 4396 }
2972 4397
2973 stat_timer_cb (EV_A_ &w->timer, 0); 4398 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2978 4403
2979static void 4404static void
2980infy_cb (EV_P_ ev_io *w, int revents) 4405infy_cb (EV_P_ ev_io *w, int revents)
2981{ 4406{
2982 char buf [EV_INOTIFY_BUFSIZE]; 4407 char buf [EV_INOTIFY_BUFSIZE];
2983 struct inotify_event *ev = (struct inotify_event *)buf;
2984 int ofs; 4408 int ofs;
2985 int len = read (fs_fd, buf, sizeof (buf)); 4409 int len = read (fs_fd, buf, sizeof (buf));
2986 4410
2987 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4411 for (ofs = 0; ofs < len; )
4412 {
4413 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2988 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4414 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4415 ofs += sizeof (struct inotify_event) + ev->len;
4416 }
2989} 4417}
2990 4418
2991inline_size void 4419inline_size ecb_cold
4420void
2992check_2625 (EV_P) 4421ev_check_2625 (EV_P)
2993{ 4422{
2994 /* kernels < 2.6.25 are borked 4423 /* kernels < 2.6.25 are borked
2995 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4424 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2996 */ 4425 */
2997 struct utsname buf; 4426 if (ev_linux_version () < 0x020619)
2998 int major, minor, micro;
2999
3000 if (uname (&buf))
3001 return;
3002
3003 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
3004 return;
3005
3006 if (major < 2
3007 || (major == 2 && minor < 6)
3008 || (major == 2 && minor == 6 && micro < 25))
3009 return; 4427 return;
3010 4428
3011 fs_2625 = 1; 4429 fs_2625 = 1;
3012} 4430}
3013 4431
3014inline_size int 4432inline_size int
3015infy_newfd (void) 4433infy_newfd (void)
3016{ 4434{
3017#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4435#if defined IN_CLOEXEC && defined IN_NONBLOCK
3018 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4436 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3019 if (fd >= 0) 4437 if (fd >= 0)
3020 return fd; 4438 return fd;
3021#endif 4439#endif
3022 return inotify_init (); 4440 return inotify_init ();
… …
3028 if (fs_fd != -2) 4446 if (fs_fd != -2)
3029 return; 4447 return;
3030 4448
3031 fs_fd = -1; 4449 fs_fd = -1;
3032 4450
3033 check_2625 (EV_A); 4451 ev_check_2625 (EV_A);
3034 4452
3035 fs_fd = infy_newfd (); 4453 fs_fd = infy_newfd ();
3036 4454
3037 if (fs_fd >= 0) 4455 if (fs_fd >= 0)
3038 { 4456 {
… …
3063 ev_io_set (&fs_w, fs_fd, EV_READ); 4481 ev_io_set (&fs_w, fs_fd, EV_READ);
3064 ev_io_start (EV_A_ &fs_w); 4482 ev_io_start (EV_A_ &fs_w);
3065 ev_unref (EV_A); 4483 ev_unref (EV_A);
3066 } 4484 }
3067 4485
3068 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4486 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3069 { 4487 {
3070 WL w_ = fs_hash [slot].head; 4488 WL w_ = fs_hash [slot].head;
3071 fs_hash [slot].head = 0; 4489 fs_hash [slot].head = 0;
3072 4490
3073 while (w_) 4491 while (w_)
… …
3097#else 4515#else
3098# define EV_LSTAT(p,b) lstat (p, b) 4516# define EV_LSTAT(p,b) lstat (p, b)
3099#endif 4517#endif
3100 4518
3101void 4519void
3102ev_stat_stat (EV_P_ ev_stat *w) 4520ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3103{ 4521{
3104 if (lstat (w->path, &w->attr) < 0) 4522 if (lstat (w->path, &w->attr) < 0)
3105 w->attr.st_nlink = 0; 4523 w->attr.st_nlink = 0;
3106 else if (!w->attr.st_nlink) 4524 else if (!w->attr.st_nlink)
3107 w->attr.st_nlink = 1; 4525 w->attr.st_nlink = 1;
3108} 4526}
3109 4527
3110static void noinline 4528noinline
4529static void
3111stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4530stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3112{ 4531{
3113 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4532 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3114 4533
3115 ev_statdata prev = w->attr; 4534 ev_statdata prev = w->attr;
… …
3146 ev_feed_event (EV_A_ w, EV_STAT); 4565 ev_feed_event (EV_A_ w, EV_STAT);
3147 } 4566 }
3148} 4567}
3149 4568
3150void 4569void
3151ev_stat_start (EV_P_ ev_stat *w) 4570ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3152{ 4571{
3153 if (expect_false (ev_is_active (w))) 4572 if (expect_false (ev_is_active (w)))
3154 return; 4573 return;
3155 4574
3156 ev_stat_stat (EV_A_ w); 4575 ev_stat_stat (EV_A_ w);
… …
3177 4596
3178 EV_FREQUENT_CHECK; 4597 EV_FREQUENT_CHECK;
3179} 4598}
3180 4599
3181void 4600void
3182ev_stat_stop (EV_P_ ev_stat *w) 4601ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3183{ 4602{
3184 clear_pending (EV_A_ (W)w); 4603 clear_pending (EV_A_ (W)w);
3185 if (expect_false (!ev_is_active (w))) 4604 if (expect_false (!ev_is_active (w)))
3186 return; 4605 return;
3187 4606
… …
3203} 4622}
3204#endif 4623#endif
3205 4624
3206#if EV_IDLE_ENABLE 4625#if EV_IDLE_ENABLE
3207void 4626void
3208ev_idle_start (EV_P_ ev_idle *w) 4627ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3209{ 4628{
3210 if (expect_false (ev_is_active (w))) 4629 if (expect_false (ev_is_active (w)))
3211 return; 4630 return;
3212 4631
3213 pri_adjust (EV_A_ (W)w); 4632 pri_adjust (EV_A_ (W)w);
… …
3218 int active = ++idlecnt [ABSPRI (w)]; 4637 int active = ++idlecnt [ABSPRI (w)];
3219 4638
3220 ++idleall; 4639 ++idleall;
3221 ev_start (EV_A_ (W)w, active); 4640 ev_start (EV_A_ (W)w, active);
3222 4641
3223 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4642 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3224 idles [ABSPRI (w)][active - 1] = w; 4643 idles [ABSPRI (w)][active - 1] = w;
3225 } 4644 }
3226 4645
3227 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3228} 4647}
3229 4648
3230void 4649void
3231ev_idle_stop (EV_P_ ev_idle *w) 4650ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3232{ 4651{
3233 clear_pending (EV_A_ (W)w); 4652 clear_pending (EV_A_ (W)w);
3234 if (expect_false (!ev_is_active (w))) 4653 if (expect_false (!ev_is_active (w)))
3235 return; 4654 return;
3236 4655
… …
3248 4667
3249 EV_FREQUENT_CHECK; 4668 EV_FREQUENT_CHECK;
3250} 4669}
3251#endif 4670#endif
3252 4671
4672#if EV_PREPARE_ENABLE
3253void 4673void
3254ev_prepare_start (EV_P_ ev_prepare *w) 4674ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3255{ 4675{
3256 if (expect_false (ev_is_active (w))) 4676 if (expect_false (ev_is_active (w)))
3257 return; 4677 return;
3258 4678
3259 EV_FREQUENT_CHECK; 4679 EV_FREQUENT_CHECK;
3260 4680
3261 ev_start (EV_A_ (W)w, ++preparecnt); 4681 ev_start (EV_A_ (W)w, ++preparecnt);
3262 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4682 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3263 prepares [preparecnt - 1] = w; 4683 prepares [preparecnt - 1] = w;
3264 4684
3265 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
3266} 4686}
3267 4687
3268void 4688void
3269ev_prepare_stop (EV_P_ ev_prepare *w) 4689ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3270{ 4690{
3271 clear_pending (EV_A_ (W)w); 4691 clear_pending (EV_A_ (W)w);
3272 if (expect_false (!ev_is_active (w))) 4692 if (expect_false (!ev_is_active (w)))
3273 return; 4693 return;
3274 4694
… …
3283 4703
3284 ev_stop (EV_A_ (W)w); 4704 ev_stop (EV_A_ (W)w);
3285 4705
3286 EV_FREQUENT_CHECK; 4706 EV_FREQUENT_CHECK;
3287} 4707}
4708#endif
3288 4709
4710#if EV_CHECK_ENABLE
3289void 4711void
3290ev_check_start (EV_P_ ev_check *w) 4712ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3291{ 4713{
3292 if (expect_false (ev_is_active (w))) 4714 if (expect_false (ev_is_active (w)))
3293 return; 4715 return;
3294 4716
3295 EV_FREQUENT_CHECK; 4717 EV_FREQUENT_CHECK;
3296 4718
3297 ev_start (EV_A_ (W)w, ++checkcnt); 4719 ev_start (EV_A_ (W)w, ++checkcnt);
3298 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4720 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3299 checks [checkcnt - 1] = w; 4721 checks [checkcnt - 1] = w;
3300 4722
3301 EV_FREQUENT_CHECK; 4723 EV_FREQUENT_CHECK;
3302} 4724}
3303 4725
3304void 4726void
3305ev_check_stop (EV_P_ ev_check *w) 4727ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3306{ 4728{
3307 clear_pending (EV_A_ (W)w); 4729 clear_pending (EV_A_ (W)w);
3308 if (expect_false (!ev_is_active (w))) 4730 if (expect_false (!ev_is_active (w)))
3309 return; 4731 return;
3310 4732
… …
3319 4741
3320 ev_stop (EV_A_ (W)w); 4742 ev_stop (EV_A_ (W)w);
3321 4743
3322 EV_FREQUENT_CHECK; 4744 EV_FREQUENT_CHECK;
3323} 4745}
4746#endif
3324 4747
3325#if EV_EMBED_ENABLE 4748#if EV_EMBED_ENABLE
3326void noinline 4749noinline
4750void
3327ev_embed_sweep (EV_P_ ev_embed *w) 4751ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3328{ 4752{
3329 ev_loop (w->other, EVLOOP_NONBLOCK); 4753 ev_run (w->other, EVRUN_NOWAIT);
3330} 4754}
3331 4755
3332static void 4756static void
3333embed_io_cb (EV_P_ ev_io *io, int revents) 4757embed_io_cb (EV_P_ ev_io *io, int revents)
3334{ 4758{
3335 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4759 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3336 4760
3337 if (ev_cb (w)) 4761 if (ev_cb (w))
3338 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4762 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3339 else 4763 else
3340 ev_loop (w->other, EVLOOP_NONBLOCK); 4764 ev_run (w->other, EVRUN_NOWAIT);
3341} 4765}
3342 4766
3343static void 4767static void
3344embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4768embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3345{ 4769{
… …
3349 EV_P = w->other; 4773 EV_P = w->other;
3350 4774
3351 while (fdchangecnt) 4775 while (fdchangecnt)
3352 { 4776 {
3353 fd_reify (EV_A); 4777 fd_reify (EV_A);
3354 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4778 ev_run (EV_A_ EVRUN_NOWAIT);
3355 } 4779 }
3356 } 4780 }
3357} 4781}
3358 4782
3359static void 4783static void
… …
3365 4789
3366 { 4790 {
3367 EV_P = w->other; 4791 EV_P = w->other;
3368 4792
3369 ev_loop_fork (EV_A); 4793 ev_loop_fork (EV_A);
3370 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4794 ev_run (EV_A_ EVRUN_NOWAIT);
3371 } 4795 }
3372 4796
3373 ev_embed_start (EV_A_ w); 4797 ev_embed_start (EV_A_ w);
3374} 4798}
3375 4799
… …
3380 ev_idle_stop (EV_A_ idle); 4804 ev_idle_stop (EV_A_ idle);
3381} 4805}
3382#endif 4806#endif
3383 4807
3384void 4808void
3385ev_embed_start (EV_P_ ev_embed *w) 4809ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3386{ 4810{
3387 if (expect_false (ev_is_active (w))) 4811 if (expect_false (ev_is_active (w)))
3388 return; 4812 return;
3389 4813
3390 { 4814 {
… …
3411 4835
3412 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
3413} 4837}
3414 4838
3415void 4839void
3416ev_embed_stop (EV_P_ ev_embed *w) 4840ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3417{ 4841{
3418 clear_pending (EV_A_ (W)w); 4842 clear_pending (EV_A_ (W)w);
3419 if (expect_false (!ev_is_active (w))) 4843 if (expect_false (!ev_is_active (w)))
3420 return; 4844 return;
3421 4845
… …
3423 4847
3424 ev_io_stop (EV_A_ &w->io); 4848 ev_io_stop (EV_A_ &w->io);
3425 ev_prepare_stop (EV_A_ &w->prepare); 4849 ev_prepare_stop (EV_A_ &w->prepare);
3426 ev_fork_stop (EV_A_ &w->fork); 4850 ev_fork_stop (EV_A_ &w->fork);
3427 4851
4852 ev_stop (EV_A_ (W)w);
4853
3428 EV_FREQUENT_CHECK; 4854 EV_FREQUENT_CHECK;
3429} 4855}
3430#endif 4856#endif
3431 4857
3432#if EV_FORK_ENABLE 4858#if EV_FORK_ENABLE
3433void 4859void
3434ev_fork_start (EV_P_ ev_fork *w) 4860ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3435{ 4861{
3436 if (expect_false (ev_is_active (w))) 4862 if (expect_false (ev_is_active (w)))
3437 return; 4863 return;
3438 4864
3439 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
3440 4866
3441 ev_start (EV_A_ (W)w, ++forkcnt); 4867 ev_start (EV_A_ (W)w, ++forkcnt);
3442 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4868 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3443 forks [forkcnt - 1] = w; 4869 forks [forkcnt - 1] = w;
3444 4870
3445 EV_FREQUENT_CHECK; 4871 EV_FREQUENT_CHECK;
3446} 4872}
3447 4873
3448void 4874void
3449ev_fork_stop (EV_P_ ev_fork *w) 4875ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3450{ 4876{
3451 clear_pending (EV_A_ (W)w); 4877 clear_pending (EV_A_ (W)w);
3452 if (expect_false (!ev_is_active (w))) 4878 if (expect_false (!ev_is_active (w)))
3453 return; 4879 return;
3454 4880
… …
3465 4891
3466 EV_FREQUENT_CHECK; 4892 EV_FREQUENT_CHECK;
3467} 4893}
3468#endif 4894#endif
3469 4895
3470#if EV_ASYNC_ENABLE 4896#if EV_CLEANUP_ENABLE
3471void 4897void
3472ev_async_start (EV_P_ ev_async *w) 4898ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3473{ 4899{
3474 if (expect_false (ev_is_active (w))) 4900 if (expect_false (ev_is_active (w)))
3475 return; 4901 return;
3476 4902
3477 evpipe_init (EV_A);
3478
3479 EV_FREQUENT_CHECK; 4903 EV_FREQUENT_CHECK;
3480 4904
3481 ev_start (EV_A_ (W)w, ++asynccnt); 4905 ev_start (EV_A_ (W)w, ++cleanupcnt);
3482 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4906 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3483 asyncs [asynccnt - 1] = w; 4907 cleanups [cleanupcnt - 1] = w;
3484 4908
4909 /* cleanup watchers should never keep a refcount on the loop */
4910 ev_unref (EV_A);
3485 EV_FREQUENT_CHECK; 4911 EV_FREQUENT_CHECK;
3486} 4912}
3487 4913
3488void 4914void
3489ev_async_stop (EV_P_ ev_async *w) 4915ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3490{ 4916{
3491 clear_pending (EV_A_ (W)w); 4917 clear_pending (EV_A_ (W)w);
3492 if (expect_false (!ev_is_active (w))) 4918 if (expect_false (!ev_is_active (w)))
3493 return; 4919 return;
3494 4920
3495 EV_FREQUENT_CHECK; 4921 EV_FREQUENT_CHECK;
4922 ev_ref (EV_A);
4923
4924 {
4925 int active = ev_active (w);
4926
4927 cleanups [active - 1] = cleanups [--cleanupcnt];
4928 ev_active (cleanups [active - 1]) = active;
4929 }
4930
4931 ev_stop (EV_A_ (W)w);
4932
4933 EV_FREQUENT_CHECK;
4934}
4935#endif
4936
4937#if EV_ASYNC_ENABLE
4938void
4939ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4940{
4941 if (expect_false (ev_is_active (w)))
4942 return;
4943
4944 w->sent = 0;
4945
4946 evpipe_init (EV_A);
4947
4948 EV_FREQUENT_CHECK;
4949
4950 ev_start (EV_A_ (W)w, ++asynccnt);
4951 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4952 asyncs [asynccnt - 1] = w;
4953
4954 EV_FREQUENT_CHECK;
4955}
4956
4957void
4958ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4959{
4960 clear_pending (EV_A_ (W)w);
4961 if (expect_false (!ev_is_active (w)))
4962 return;
4963
4964 EV_FREQUENT_CHECK;
3496 4965
3497 { 4966 {
3498 int active = ev_active (w); 4967 int active = ev_active (w);
3499 4968
3500 asyncs [active - 1] = asyncs [--asynccnt]; 4969 asyncs [active - 1] = asyncs [--asynccnt];
… …
3505 4974
3506 EV_FREQUENT_CHECK; 4975 EV_FREQUENT_CHECK;
3507} 4976}
3508 4977
3509void 4978void
3510ev_async_send (EV_P_ ev_async *w) 4979ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3511{ 4980{
3512 w->sent = 1; 4981 w->sent = 1;
3513 evpipe_write (EV_A_ &async_pending); 4982 evpipe_write (EV_A_ &async_pending);
3514} 4983}
3515#endif 4984#endif
… …
3552 5021
3553 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5022 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3554} 5023}
3555 5024
3556void 5025void
3557ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5026ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3558{ 5027{
3559 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5028 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3560
3561 if (expect_false (!once))
3562 {
3563 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3564 return;
3565 }
3566 5029
3567 once->cb = cb; 5030 once->cb = cb;
3568 once->arg = arg; 5031 once->arg = arg;
3569 5032
3570 ev_init (&once->io, once_cb_io); 5033 ev_init (&once->io, once_cb_io);
… …
3583} 5046}
3584 5047
3585/*****************************************************************************/ 5048/*****************************************************************************/
3586 5049
3587#if EV_WALK_ENABLE 5050#if EV_WALK_ENABLE
5051ecb_cold
3588void 5052void
3589ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5053ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3590{ 5054{
3591 int i, j; 5055 int i, j;
3592 ev_watcher_list *wl, *wn; 5056 ev_watcher_list *wl, *wn;
3593 5057
3594 if (types & (EV_IO | EV_EMBED)) 5058 if (types & (EV_IO | EV_EMBED))
… …
3637 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5101 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3638#endif 5102#endif
3639 5103
3640#if EV_IDLE_ENABLE 5104#if EV_IDLE_ENABLE
3641 if (types & EV_IDLE) 5105 if (types & EV_IDLE)
3642 for (j = NUMPRI; i--; ) 5106 for (j = NUMPRI; j--; )
3643 for (i = idlecnt [j]; i--; ) 5107 for (i = idlecnt [j]; i--; )
3644 cb (EV_A_ EV_IDLE, idles [j][i]); 5108 cb (EV_A_ EV_IDLE, idles [j][i]);
3645#endif 5109#endif
3646 5110
3647#if EV_FORK_ENABLE 5111#if EV_FORK_ENABLE
… …
3655 if (types & EV_ASYNC) 5119 if (types & EV_ASYNC)
3656 for (i = asynccnt; i--; ) 5120 for (i = asynccnt; i--; )
3657 cb (EV_A_ EV_ASYNC, asyncs [i]); 5121 cb (EV_A_ EV_ASYNC, asyncs [i]);
3658#endif 5122#endif
3659 5123
5124#if EV_PREPARE_ENABLE
3660 if (types & EV_PREPARE) 5125 if (types & EV_PREPARE)
3661 for (i = preparecnt; i--; ) 5126 for (i = preparecnt; i--; )
3662#if EV_EMBED_ENABLE 5127# if EV_EMBED_ENABLE
3663 if (ev_cb (prepares [i]) != embed_prepare_cb) 5128 if (ev_cb (prepares [i]) != embed_prepare_cb)
3664#endif 5129# endif
3665 cb (EV_A_ EV_PREPARE, prepares [i]); 5130 cb (EV_A_ EV_PREPARE, prepares [i]);
5131#endif
3666 5132
5133#if EV_CHECK_ENABLE
3667 if (types & EV_CHECK) 5134 if (types & EV_CHECK)
3668 for (i = checkcnt; i--; ) 5135 for (i = checkcnt; i--; )
3669 cb (EV_A_ EV_CHECK, checks [i]); 5136 cb (EV_A_ EV_CHECK, checks [i]);
5137#endif
3670 5138
5139#if EV_SIGNAL_ENABLE
3671 if (types & EV_SIGNAL) 5140 if (types & EV_SIGNAL)
3672 for (i = 0; i < EV_NSIG - 1; ++i) 5141 for (i = 0; i < EV_NSIG - 1; ++i)
3673 for (wl = signals [i].head; wl; ) 5142 for (wl = signals [i].head; wl; )
3674 { 5143 {
3675 wn = wl->next; 5144 wn = wl->next;
3676 cb (EV_A_ EV_SIGNAL, wl); 5145 cb (EV_A_ EV_SIGNAL, wl);
3677 wl = wn; 5146 wl = wn;
3678 } 5147 }
5148#endif
3679 5149
5150#if EV_CHILD_ENABLE
3680 if (types & EV_CHILD) 5151 if (types & EV_CHILD)
3681 for (i = EV_PID_HASHSIZE; i--; ) 5152 for (i = (EV_PID_HASHSIZE); i--; )
3682 for (wl = childs [i]; wl; ) 5153 for (wl = childs [i]; wl; )
3683 { 5154 {
3684 wn = wl->next; 5155 wn = wl->next;
3685 cb (EV_A_ EV_CHILD, wl); 5156 cb (EV_A_ EV_CHILD, wl);
3686 wl = wn; 5157 wl = wn;
3687 } 5158 }
5159#endif
3688/* EV_STAT 0x00001000 /* stat data changed */ 5160/* EV_STAT 0x00001000 /* stat data changed */
3689/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5161/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3690} 5162}
3691#endif 5163#endif
3692 5164
3693#if EV_MULTIPLICITY 5165#if EV_MULTIPLICITY
3694 #include "ev_wrap.h" 5166 #include "ev_wrap.h"
3695#endif 5167#endif
3696 5168
3697#ifdef __cplusplus
3698}
3699#endif
3700

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