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Comparing libev/ev.c (file contents):
Revision 1.285 by root, Wed Apr 15 19:35:53 2009 UTC vs.
Revision 1.508 by root, Thu Jul 11 08:29:08 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
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# 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
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
112# ifndef EV_USE_KQUEUE 120# if HAVE_LINUX_AIO_ABI_H
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 121# ifndef EV_USE_LINUXAIO
114# define EV_USE_KQUEUE 1 122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# if HAVE_PORT_H && HAVE_PORT_CREATE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_PORT 1 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# else
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_KQUEUE
135# define EV_USE_KQUEUE 0
126# endif 136# endif
127 137
138# if HAVE_PORT_H && HAVE_PORT_CREATE
128# ifndef EV_USE_INOTIFY 139# ifndef EV_USE_PORT
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 140# define EV_USE_PORT EV_FEATURE_BACKENDS
130# define EV_USE_INOTIFY 1
131# else
132# define EV_USE_INOTIFY 0
133# endif 141# endif
142# else
143# undef EV_USE_PORT
144# define EV_USE_PORT 0
134# endif 145# endif
135 146
147# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_INOTIFY
137# if HAVE_EVENTFD 149# define EV_USE_INOTIFY EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif 150# endif
151# else
152# undef EV_USE_INOTIFY
153# define EV_USE_INOTIFY 0
154# endif
155
156# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
157# ifndef EV_USE_SIGNALFD
158# define EV_USE_SIGNALFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_SIGNALFD
162# define EV_USE_SIGNALFD 0
163# endif
164
165# if HAVE_EVENTFD
166# ifndef EV_USE_EVENTFD
167# define EV_USE_EVENTFD EV_FEATURE_OS
168# endif
169# else
170# undef EV_USE_EVENTFD
171# define EV_USE_EVENTFD 0
142# endif 172# endif
143 173
144#endif 174#endif
145 175
146#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
147#include <stdlib.h> 186#include <stdlib.h>
187#include <string.h>
148#include <fcntl.h> 188#include <fcntl.h>
149#include <stddef.h> 189#include <stddef.h>
150 190
151#include <stdio.h> 191#include <stdio.h>
152 192
153#include <assert.h> 193#include <assert.h>
154#include <errno.h> 194#include <errno.h>
155#include <sys/types.h> 195#include <sys/types.h>
156#include <time.h> 196#include <time.h>
197#include <limits.h>
157 198
158#include <signal.h> 199#include <signal.h>
159 200
160#ifdef EV_H 201#ifdef EV_H
161# include EV_H 202# include EV_H
162#else 203#else
163# include "ev.h" 204# include "ev.h"
205#endif
206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
164#endif 216#endif
165 217
166#ifndef _WIN32 218#ifndef _WIN32
167# include <sys/time.h> 219# include <sys/time.h>
168# include <sys/wait.h> 220# include <sys/wait.h>
169# include <unistd.h> 221# include <unistd.h>
170#else 222#else
171# include <io.h> 223# include <io.h>
172# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
173# include <windows.h> 226# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
176# endif 229# endif
230# undef EV_AVOID_STDIO
177#endif 231#endif
178 232
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
180 234
235/* try to deduce the maximum number of signals on this platform */
236#if defined EV_NSIG
237/* use what's provided */
238#elif defined NSIG
239# define EV_NSIG (NSIG)
240#elif defined _NSIG
241# define EV_NSIG (_NSIG)
242#elif defined SIGMAX
243# define EV_NSIG (SIGMAX+1)
244#elif defined SIG_MAX
245# define EV_NSIG (SIG_MAX+1)
246#elif defined _SIG_MAX
247# define EV_NSIG (_SIG_MAX+1)
248#elif defined MAXSIG
249# define EV_NSIG (MAXSIG+1)
250#elif defined MAX_SIG
251# define EV_NSIG (MAX_SIG+1)
252#elif defined SIGARRAYSIZE
253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
254#elif defined _sys_nsig
255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
256#else
257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
258#endif
259
260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
262#endif
263
181#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
183# define EV_USE_CLOCK_SYSCALL 1 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 267# else
185# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
186# endif 269# endif
187#endif 270#endif
188 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
189#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 283# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 284# else
193# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
194# endif 286# endif
195#endif 287#endif
196 288
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 290# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 291#endif
200 292
201#ifndef EV_USE_NANOSLEEP 293#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 294# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 295# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 296# else
205# define EV_USE_NANOSLEEP 0 297# define EV_USE_NANOSLEEP 0
206# endif 298# endif
207#endif 299#endif
208 300
209#ifndef EV_USE_SELECT 301#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 302# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 303#endif
212 304
213#ifndef EV_USE_POLL 305#ifndef EV_USE_POLL
214# ifdef _WIN32 306# ifdef _WIN32
215# define EV_USE_POLL 0 307# define EV_USE_POLL 0
216# else 308# else
217# define EV_USE_POLL 1 309# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 310# endif
219#endif 311#endif
220 312
221#ifndef EV_USE_EPOLL 313#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 315# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 316# else
225# define EV_USE_EPOLL 0 317# define EV_USE_EPOLL 0
226# endif 318# endif
227#endif 319#endif
228 320
… …
232 324
233#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
234# define EV_USE_PORT 0 326# define EV_USE_PORT 0
235#endif 327#endif
236 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
237#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 347# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 348# else
241# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
242# endif 350# endif
243#endif 351#endif
244 352
245#ifndef EV_PID_HASHSIZE 353#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 354# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 355#endif
252 356
253#ifndef EV_INOTIFY_HASHSIZE 357#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 358# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 359#endif
260 360
261#ifndef EV_USE_EVENTFD 361#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 363# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 364# else
265# define EV_USE_EVENTFD 0 365# define EV_USE_EVENTFD 0
366# endif
367#endif
368
369#ifndef EV_USE_SIGNALFD
370# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
371# define EV_USE_SIGNALFD EV_FEATURE_OS
372# else
373# define EV_USE_SIGNALFD 0
266# endif 374# endif
267#endif 375#endif
268 376
269#if 0 /* debugging */ 377#if 0 /* debugging */
270# define EV_VERIFY 3 378# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 379# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 380# define EV_HEAP_CACHE_AT 1
273#endif 381#endif
274 382
275#ifndef EV_VERIFY 383#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 384# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 385#endif
278 386
279#ifndef EV_USE_4HEAP 387#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 388# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 389#endif
282 390
283#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
393#endif
394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
409#endif
410
411/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
412/* which makes programs even slower. might work on other unices, too. */
413#if EV_USE_CLOCK_SYSCALL
414# include <sys/syscall.h>
415# ifdef SYS_clock_gettime
416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
417# undef EV_USE_MONOTONIC
418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
420# else
421# undef EV_USE_CLOCK_SYSCALL
422# define EV_USE_CLOCK_SYSCALL 0
423# endif
285#endif 424#endif
286 425
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 426/* this block fixes any misconfiguration where we know we run into trouble otherwise */
288 427
289#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
… …
300# undef EV_USE_INOTIFY 439# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
302#endif 441#endif
303 442
304#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
445# if !defined _WIN32 && !defined __hpux
306# include <sys/select.h> 446# include <sys/select.h>
307# endif 447# endif
308#endif 448#endif
309 449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
472# endif
473#endif
474
310#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 476# include <sys/statfs.h>
313# include <sys/inotify.h> 477# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
318# endif 482# endif
319#endif 483#endif
320 484
321#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h>
323#endif
324
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 487# include <stdint.h>
337# ifdef __cplusplus 488# ifndef EFD_NONBLOCK
338extern "C" { 489# define EFD_NONBLOCK O_NONBLOCK
339# endif 490# endif
340int eventfd (unsigned int initval, int flags); 491# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 492# ifdef O_CLOEXEC
342} 493# define EFD_CLOEXEC O_CLOEXEC
494# else
495# define EFD_CLOEXEC 02000000
496# endif
343# endif 497# endif
498EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
499#endif
500
501#if EV_USE_SIGNALFD
502/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
503# include <stdint.h>
504# ifndef SFD_NONBLOCK
505# define SFD_NONBLOCK O_NONBLOCK
344#endif 506# endif
507# ifndef SFD_CLOEXEC
508# ifdef O_CLOEXEC
509# define SFD_CLOEXEC O_CLOEXEC
510# else
511# define SFD_CLOEXEC 02000000
512# endif
513# endif
514EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
345 515
346/**/ 516struct signalfd_siginfo
517{
518 uint32_t ssi_signo;
519 char pad[128 - sizeof (uint32_t)];
520};
521#endif
522
523/*****************************************************************************/
347 524
348#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 527#else
351# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
352#endif 529#endif
353 530
354/* 531/*
355 * This is used to avoid floating point rounding problems. 532 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 534 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 537
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
550#define EV_TS_FROM_USEC(us) us * 1e-6
551#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
552#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
553#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
554#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
555
556/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
557/* ECB.H BEGIN */
558/*
559 * libecb - http://software.schmorp.de/pkg/libecb
560 *
561 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
562 * Copyright (©) 2011 Emanuele Giaquinta
563 * All rights reserved.
564 *
565 * Redistribution and use in source and binary forms, with or without modifica-
566 * tion, are permitted provided that the following conditions are met:
567 *
568 * 1. Redistributions of source code must retain the above copyright notice,
569 * this list of conditions and the following disclaimer.
570 *
571 * 2. Redistributions in binary form must reproduce the above copyright
572 * notice, this list of conditions and the following disclaimer in the
573 * documentation and/or other materials provided with the distribution.
574 *
575 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
576 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
577 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
578 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
579 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
580 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
581 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
582 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
583 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
584 * OF THE POSSIBILITY OF SUCH DAMAGE.
585 *
586 * Alternatively, the contents of this file may be used under the terms of
587 * the GNU General Public License ("GPL") version 2 or any later version,
588 * in which case the provisions of the GPL are applicable instead of
589 * the above. If you wish to allow the use of your version of this file
590 * only under the terms of the GPL and not to allow others to use your
591 * version of this file under the BSD license, indicate your decision
592 * by deleting the provisions above and replace them with the notice
593 * and other provisions required by the GPL. If you do not delete the
594 * provisions above, a recipient may use your version of this file under
595 * either the BSD or the GPL.
596 */
597
598#ifndef ECB_H
599#define ECB_H
600
601/* 16 bits major, 16 bits minor */
602#define ECB_VERSION 0x00010006
603
604#ifdef _WIN32
605 typedef signed char int8_t;
606 typedef unsigned char uint8_t;
607 typedef signed short int16_t;
608 typedef unsigned short uint16_t;
609 typedef signed int int32_t;
610 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 611 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 612 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 613 typedef unsigned long long uint64_t;
614 #else /* _MSC_VER || __BORLANDC__ */
615 typedef signed __int64 int64_t;
616 typedef unsigned __int64 uint64_t;
617 #endif
618 #ifdef _WIN64
619 #define ECB_PTRSIZE 8
620 typedef uint64_t uintptr_t;
621 typedef int64_t intptr_t;
622 #else
623 #define ECB_PTRSIZE 4
624 typedef uint32_t uintptr_t;
625 typedef int32_t intptr_t;
626 #endif
371#else 627#else
372# define expect(expr,value) (expr) 628 #include <inttypes.h>
373# define noinline 629 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 630 #define ECB_PTRSIZE 8
375# define inline 631 #else
632 #define ECB_PTRSIZE 4
633 #endif
376# endif 634#endif
635
636#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
637#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
638
639/* work around x32 idiocy by defining proper macros */
640#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
641 #if _ILP32
642 #define ECB_AMD64_X32 1
643 #else
644 #define ECB_AMD64 1
377#endif 645 #endif
646#endif
378 647
379#define expect_false(expr) expect ((expr) != 0, 0) 648/* many compilers define _GNUC_ to some versions but then only implement
380#define expect_true(expr) expect ((expr) != 0, 1) 649 * what their idiot authors think are the "more important" extensions,
381#define inline_size static inline 650 * causing enormous grief in return for some better fake benchmark numbers.
382 651 * or so.
383#if EV_MINIMAL 652 * we try to detect these and simply assume they are not gcc - if they have
384# define inline_speed static noinline 653 * an issue with that they should have done it right in the first place.
654 */
655#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
656 #define ECB_GCC_VERSION(major,minor) 0
385#else 657#else
658 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
659#endif
660
661#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
662
663#if __clang__ && defined __has_builtin
664 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
665#else
666 #define ECB_CLANG_BUILTIN(x) 0
667#endif
668
669#if __clang__ && defined __has_extension
670 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
671#else
672 #define ECB_CLANG_EXTENSION(x) 0
673#endif
674
675#define ECB_CPP (__cplusplus+0)
676#define ECB_CPP11 (__cplusplus >= 201103L)
677#define ECB_CPP14 (__cplusplus >= 201402L)
678#define ECB_CPP17 (__cplusplus >= 201703L)
679
680#if ECB_CPP
681 #define ECB_C 0
682 #define ECB_STDC_VERSION 0
683#else
684 #define ECB_C 1
685 #define ECB_STDC_VERSION __STDC_VERSION__
686#endif
687
688#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
689#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
690#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
691
692#if ECB_CPP
693 #define ECB_EXTERN_C extern "C"
694 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
695 #define ECB_EXTERN_C_END }
696#else
697 #define ECB_EXTERN_C extern
698 #define ECB_EXTERN_C_BEG
699 #define ECB_EXTERN_C_END
700#endif
701
702/*****************************************************************************/
703
704/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
705/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
706
707#if ECB_NO_THREADS
708 #define ECB_NO_SMP 1
709#endif
710
711#if ECB_NO_SMP
712 #define ECB_MEMORY_FENCE do { } while (0)
713#endif
714
715/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
716#if __xlC__ && ECB_CPP
717 #include <builtins.h>
718#endif
719
720#if 1400 <= _MSC_VER
721 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
722#endif
723
724#ifndef ECB_MEMORY_FENCE
725 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
726 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
727 #if __i386 || __i386__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
731 #elif ECB_GCC_AMD64
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
733 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
734 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
735 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
737 #elif defined __ARM_ARCH_2__ \
738 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
739 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
740 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
741 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
742 || defined __ARM_ARCH_5TEJ__
743 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
744 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
745 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
746 || defined __ARM_ARCH_6T2__
747 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
748 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
749 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
751 #elif __aarch64__
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
753 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
755 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
756 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
757 #elif defined __s390__ || defined __s390x__
758 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
759 #elif defined __mips__
760 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
761 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
763 #elif defined __alpha__
764 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
765 #elif defined __hppa__
766 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
767 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
768 #elif defined __ia64__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
770 #elif defined __m68k__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
772 #elif defined __m88k__
773 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
774 #elif defined __sh__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
776 #endif
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if ECB_GCC_VERSION(4,7)
782 /* see comment below (stdatomic.h) about the C11 memory model. */
783 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
784 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
785 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
786 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
787
788 #elif ECB_CLANG_EXTENSION(c_atomic)
789 /* see comment below (stdatomic.h) about the C11 memory model. */
790 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
791 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
792 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
793 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
794
795 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
796 #define ECB_MEMORY_FENCE __sync_synchronize ()
797 #elif _MSC_VER >= 1500 /* VC++ 2008 */
798 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
799 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
800 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
801 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
802 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
803 #elif _MSC_VER >= 1400 /* VC++ 2005 */
804 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
805 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
806 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
807 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
808 #elif defined _WIN32
809 #include <WinNT.h>
810 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
811 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
812 #include <mbarrier.h>
813 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
814 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
815 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
816 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
817 #elif __xlC__
818 #define ECB_MEMORY_FENCE __sync ()
819 #endif
820#endif
821
822#ifndef ECB_MEMORY_FENCE
823 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
824 /* we assume that these memory fences work on all variables/all memory accesses, */
825 /* not just C11 atomics and atomic accesses */
826 #include <stdatomic.h>
827 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
828 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
829 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
830 #endif
831#endif
832
833#ifndef ECB_MEMORY_FENCE
834 #if !ECB_AVOID_PTHREADS
835 /*
836 * if you get undefined symbol references to pthread_mutex_lock,
837 * or failure to find pthread.h, then you should implement
838 * the ECB_MEMORY_FENCE operations for your cpu/compiler
839 * OR provide pthread.h and link against the posix thread library
840 * of your system.
841 */
842 #include <pthread.h>
843 #define ECB_NEEDS_PTHREADS 1
844 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
845
846 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
847 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
848 #endif
849#endif
850
851#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
852 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
853#endif
854
855#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
856 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
857#endif
858
859#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
860 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
861#endif
862
863/*****************************************************************************/
864
865#if ECB_CPP
866 #define ecb_inline static inline
867#elif ECB_GCC_VERSION(2,5)
868 #define ecb_inline static __inline__
869#elif ECB_C99
870 #define ecb_inline static inline
871#else
872 #define ecb_inline static
873#endif
874
875#if ECB_GCC_VERSION(3,3)
876 #define ecb_restrict __restrict__
877#elif ECB_C99
878 #define ecb_restrict restrict
879#else
880 #define ecb_restrict
881#endif
882
883typedef int ecb_bool;
884
885#define ECB_CONCAT_(a, b) a ## b
886#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
887#define ECB_STRINGIFY_(a) # a
888#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
889#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
890
891#define ecb_function_ ecb_inline
892
893#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
894 #define ecb_attribute(attrlist) __attribute__ (attrlist)
895#else
896 #define ecb_attribute(attrlist)
897#endif
898
899#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
900 #define ecb_is_constant(expr) __builtin_constant_p (expr)
901#else
902 /* possible C11 impl for integral types
903 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
904 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
905
906 #define ecb_is_constant(expr) 0
907#endif
908
909#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
910 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
911#else
912 #define ecb_expect(expr,value) (expr)
913#endif
914
915#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
916 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
917#else
918 #define ecb_prefetch(addr,rw,locality)
919#endif
920
921/* no emulation for ecb_decltype */
922#if ECB_CPP11
923 // older implementations might have problems with decltype(x)::type, work around it
924 template<class T> struct ecb_decltype_t { typedef T type; };
925 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
926#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
927 #define ecb_decltype(x) __typeof__ (x)
928#endif
929
930#if _MSC_VER >= 1300
931 #define ecb_deprecated __declspec (deprecated)
932#else
933 #define ecb_deprecated ecb_attribute ((__deprecated__))
934#endif
935
936#if _MSC_VER >= 1500
937 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
938#elif ECB_GCC_VERSION(4,5)
939 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
940#else
941 #define ecb_deprecated_message(msg) ecb_deprecated
942#endif
943
944#if _MSC_VER >= 1400
945 #define ecb_noinline __declspec (noinline)
946#else
947 #define ecb_noinline ecb_attribute ((__noinline__))
948#endif
949
950#define ecb_unused ecb_attribute ((__unused__))
951#define ecb_const ecb_attribute ((__const__))
952#define ecb_pure ecb_attribute ((__pure__))
953
954#if ECB_C11 || __IBMC_NORETURN
955 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
956 #define ecb_noreturn _Noreturn
957#elif ECB_CPP11
958 #define ecb_noreturn [[noreturn]]
959#elif _MSC_VER >= 1200
960 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
961 #define ecb_noreturn __declspec (noreturn)
962#else
963 #define ecb_noreturn ecb_attribute ((__noreturn__))
964#endif
965
966#if ECB_GCC_VERSION(4,3)
967 #define ecb_artificial ecb_attribute ((__artificial__))
968 #define ecb_hot ecb_attribute ((__hot__))
969 #define ecb_cold ecb_attribute ((__cold__))
970#else
971 #define ecb_artificial
972 #define ecb_hot
973 #define ecb_cold
974#endif
975
976/* put around conditional expressions if you are very sure that the */
977/* expression is mostly true or mostly false. note that these return */
978/* booleans, not the expression. */
979#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
980#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
981/* for compatibility to the rest of the world */
982#define ecb_likely(expr) ecb_expect_true (expr)
983#define ecb_unlikely(expr) ecb_expect_false (expr)
984
985/* count trailing zero bits and count # of one bits */
986#if ECB_GCC_VERSION(3,4) \
987 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
988 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
989 && ECB_CLANG_BUILTIN(__builtin_popcount))
990 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
991 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
992 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
993 #define ecb_ctz32(x) __builtin_ctz (x)
994 #define ecb_ctz64(x) __builtin_ctzll (x)
995 #define ecb_popcount32(x) __builtin_popcount (x)
996 /* no popcountll */
997#else
998 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
999 ecb_function_ ecb_const int
1000 ecb_ctz32 (uint32_t x)
1001 {
1002#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1003 unsigned long r;
1004 _BitScanForward (&r, x);
1005 return (int)r;
1006#else
1007 int r = 0;
1008
1009 x &= ~x + 1; /* this isolates the lowest bit */
1010
1011#if ECB_branchless_on_i386
1012 r += !!(x & 0xaaaaaaaa) << 0;
1013 r += !!(x & 0xcccccccc) << 1;
1014 r += !!(x & 0xf0f0f0f0) << 2;
1015 r += !!(x & 0xff00ff00) << 3;
1016 r += !!(x & 0xffff0000) << 4;
1017#else
1018 if (x & 0xaaaaaaaa) r += 1;
1019 if (x & 0xcccccccc) r += 2;
1020 if (x & 0xf0f0f0f0) r += 4;
1021 if (x & 0xff00ff00) r += 8;
1022 if (x & 0xffff0000) r += 16;
1023#endif
1024
1025 return r;
1026#endif
1027 }
1028
1029 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1030 ecb_function_ ecb_const int
1031 ecb_ctz64 (uint64_t x)
1032 {
1033#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1034 unsigned long r;
1035 _BitScanForward64 (&r, x);
1036 return (int)r;
1037#else
1038 int shift = x & 0xffffffff ? 0 : 32;
1039 return ecb_ctz32 (x >> shift) + shift;
1040#endif
1041 }
1042
1043 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1044 ecb_function_ ecb_const int
1045 ecb_popcount32 (uint32_t x)
1046 {
1047 x -= (x >> 1) & 0x55555555;
1048 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1049 x = ((x >> 4) + x) & 0x0f0f0f0f;
1050 x *= 0x01010101;
1051
1052 return x >> 24;
1053 }
1054
1055 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1056 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1057 {
1058#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1059 unsigned long r;
1060 _BitScanReverse (&r, x);
1061 return (int)r;
1062#else
1063 int r = 0;
1064
1065 if (x >> 16) { x >>= 16; r += 16; }
1066 if (x >> 8) { x >>= 8; r += 8; }
1067 if (x >> 4) { x >>= 4; r += 4; }
1068 if (x >> 2) { x >>= 2; r += 2; }
1069 if (x >> 1) { r += 1; }
1070
1071 return r;
1072#endif
1073 }
1074
1075 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1076 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1077 {
1078#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse64 (&r, x);
1081 return (int)r;
1082#else
1083 int r = 0;
1084
1085 if (x >> 32) { x >>= 32; r += 32; }
1086
1087 return r + ecb_ld32 (x);
1088#endif
1089 }
1090#endif
1091
1092ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1093ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1094ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1095ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1096
1097ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1098ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1099{
1100 return ( (x * 0x0802U & 0x22110U)
1101 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1102}
1103
1104ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1105ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1106{
1107 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1108 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1109 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1110 x = ( x >> 8 ) | ( x << 8);
1111
1112 return x;
1113}
1114
1115ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1116ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1117{
1118 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1119 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1120 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1121 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1122 x = ( x >> 16 ) | ( x << 16);
1123
1124 return x;
1125}
1126
1127/* popcount64 is only available on 64 bit cpus as gcc builtin */
1128/* so for this version we are lazy */
1129ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1130ecb_function_ ecb_const int
1131ecb_popcount64 (uint64_t x)
1132{
1133 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1134}
1135
1136ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1137ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1138ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1139ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1140ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1141ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1142ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1143ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1144
1145ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1146ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1147ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1148ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1149ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1150ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1151ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1152ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1153
1154#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1155 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1156 #define ecb_bswap16(x) __builtin_bswap16 (x)
1157 #else
1158 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1159 #endif
1160 #define ecb_bswap32(x) __builtin_bswap32 (x)
1161 #define ecb_bswap64(x) __builtin_bswap64 (x)
1162#elif _MSC_VER
1163 #include <stdlib.h>
1164 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1165 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1166 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1167#else
1168 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1169 ecb_function_ ecb_const uint16_t
1170 ecb_bswap16 (uint16_t x)
1171 {
1172 return ecb_rotl16 (x, 8);
1173 }
1174
1175 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1176 ecb_function_ ecb_const uint32_t
1177 ecb_bswap32 (uint32_t x)
1178 {
1179 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1180 }
1181
1182 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1183 ecb_function_ ecb_const uint64_t
1184 ecb_bswap64 (uint64_t x)
1185 {
1186 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1187 }
1188#endif
1189
1190#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1191 #define ecb_unreachable() __builtin_unreachable ()
1192#else
1193 /* this seems to work fine, but gcc always emits a warning for it :/ */
1194 ecb_inline ecb_noreturn void ecb_unreachable (void);
1195 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1196#endif
1197
1198/* try to tell the compiler that some condition is definitely true */
1199#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1200
1201ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1202ecb_inline ecb_const uint32_t
1203ecb_byteorder_helper (void)
1204{
1205 /* the union code still generates code under pressure in gcc, */
1206 /* but less than using pointers, and always seems to */
1207 /* successfully return a constant. */
1208 /* the reason why we have this horrible preprocessor mess */
1209 /* is to avoid it in all cases, at least on common architectures */
1210 /* or when using a recent enough gcc version (>= 4.6) */
1211#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1212 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1213 #define ECB_LITTLE_ENDIAN 1
1214 return 0x44332211;
1215#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1216 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1217 #define ECB_BIG_ENDIAN 1
1218 return 0x11223344;
1219#else
1220 union
1221 {
1222 uint8_t c[4];
1223 uint32_t u;
1224 } u = { 0x11, 0x22, 0x33, 0x44 };
1225 return u.u;
1226#endif
1227}
1228
1229ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1230ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1231ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1232ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1233
1234#if ECB_GCC_VERSION(3,0) || ECB_C99
1235 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1236#else
1237 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1238#endif
1239
1240#if ECB_CPP
1241 template<typename T>
1242 static inline T ecb_div_rd (T val, T div)
1243 {
1244 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1245 }
1246 template<typename T>
1247 static inline T ecb_div_ru (T val, T div)
1248 {
1249 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1250 }
1251#else
1252 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1253 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1254#endif
1255
1256#if ecb_cplusplus_does_not_suck
1257 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1258 template<typename T, int N>
1259 static inline int ecb_array_length (const T (&arr)[N])
1260 {
1261 return N;
1262 }
1263#else
1264 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1265#endif
1266
1267ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1268ecb_function_ ecb_const uint32_t
1269ecb_binary16_to_binary32 (uint32_t x)
1270{
1271 unsigned int s = (x & 0x8000) << (31 - 15);
1272 int e = (x >> 10) & 0x001f;
1273 unsigned int m = x & 0x03ff;
1274
1275 if (ecb_expect_false (e == 31))
1276 /* infinity or NaN */
1277 e = 255 - (127 - 15);
1278 else if (ecb_expect_false (!e))
1279 {
1280 if (ecb_expect_true (!m))
1281 /* zero, handled by code below by forcing e to 0 */
1282 e = 0 - (127 - 15);
1283 else
1284 {
1285 /* subnormal, renormalise */
1286 unsigned int s = 10 - ecb_ld32 (m);
1287
1288 m = (m << s) & 0x3ff; /* mask implicit bit */
1289 e -= s - 1;
1290 }
1291 }
1292
1293 /* e and m now are normalised, or zero, (or inf or nan) */
1294 e += 127 - 15;
1295
1296 return s | (e << 23) | (m << (23 - 10));
1297}
1298
1299ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1300ecb_function_ ecb_const uint16_t
1301ecb_binary32_to_binary16 (uint32_t x)
1302{
1303 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1304 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1305 unsigned int m = x & 0x007fffff;
1306
1307 x &= 0x7fffffff;
1308
1309 /* if it's within range of binary16 normals, use fast path */
1310 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1311 {
1312 /* mantissa round-to-even */
1313 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1314
1315 /* handle overflow */
1316 if (ecb_expect_false (m >= 0x00800000))
1317 {
1318 m >>= 1;
1319 e += 1;
1320 }
1321
1322 return s | (e << 10) | (m >> (23 - 10));
1323 }
1324
1325 /* handle large numbers and infinity */
1326 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1327 return s | 0x7c00;
1328
1329 /* handle zero, subnormals and small numbers */
1330 if (ecb_expect_true (x < 0x38800000))
1331 {
1332 /* zero */
1333 if (ecb_expect_true (!x))
1334 return s;
1335
1336 /* handle subnormals */
1337
1338 /* too small, will be zero */
1339 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1340 return s;
1341
1342 m |= 0x00800000; /* make implicit bit explicit */
1343
1344 /* very tricky - we need to round to the nearest e (+10) bit value */
1345 {
1346 unsigned int bits = 14 - e;
1347 unsigned int half = (1 << (bits - 1)) - 1;
1348 unsigned int even = (m >> bits) & 1;
1349
1350 /* if this overflows, we will end up with a normalised number */
1351 m = (m + half + even) >> bits;
1352 }
1353
1354 return s | m;
1355 }
1356
1357 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1358 m >>= 13;
1359
1360 return s | 0x7c00 | m | !m;
1361}
1362
1363/*******************************************************************************/
1364/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1365
1366/* basically, everything uses "ieee pure-endian" floating point numbers */
1367/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1368#if 0 \
1369 || __i386 || __i386__ \
1370 || ECB_GCC_AMD64 \
1371 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1372 || defined __s390__ || defined __s390x__ \
1373 || defined __mips__ \
1374 || defined __alpha__ \
1375 || defined __hppa__ \
1376 || defined __ia64__ \
1377 || defined __m68k__ \
1378 || defined __m88k__ \
1379 || defined __sh__ \
1380 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1381 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1382 || defined __aarch64__
1383 #define ECB_STDFP 1
1384 #include <string.h> /* for memcpy */
1385#else
1386 #define ECB_STDFP 0
1387#endif
1388
1389#ifndef ECB_NO_LIBM
1390
1391 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1392
1393 /* only the oldest of old doesn't have this one. solaris. */
1394 #ifdef INFINITY
1395 #define ECB_INFINITY INFINITY
1396 #else
1397 #define ECB_INFINITY HUGE_VAL
1398 #endif
1399
1400 #ifdef NAN
1401 #define ECB_NAN NAN
1402 #else
1403 #define ECB_NAN ECB_INFINITY
1404 #endif
1405
1406 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1407 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1408 #define ecb_frexpf(x,e) frexpf ((x), (e))
1409 #else
1410 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1411 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1412 #endif
1413
1414 /* convert a float to ieee single/binary32 */
1415 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1416 ecb_function_ ecb_const uint32_t
1417 ecb_float_to_binary32 (float x)
1418 {
1419 uint32_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint32_t m;
1426 int e;
1427
1428 if (x == 0e0f ) return 0x00000000U;
1429 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1430 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1431 if (x != x ) return 0x7fbfffffU;
1432
1433 m = ecb_frexpf (x, &e) * 0x1000000U;
1434
1435 r = m & 0x80000000U;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -126)
1441 {
1442 m &= 0xffffffU;
1443 m >>= (-125 - e);
1444 e = -126;
1445 }
1446
1447 r |= (e + 126) << 23;
1448 r |= m & 0x7fffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee single/binary32 to a float */
1455 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1456 ecb_function_ ecb_const float
1457 ecb_binary32_to_float (uint32_t x)
1458 {
1459 float r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 4);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 31;
1466 int e = (x >> 23) & 0xffU;
1467
1468 x &= 0x7fffffU;
1469
1470 if (e)
1471 x |= 0x800000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1476 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a double to ieee double/binary64 */
1485 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1486 ecb_function_ ecb_const uint64_t
1487 ecb_double_to_binary64 (double x)
1488 {
1489 uint64_t r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* slow emulation, works for anything but -0 */
1495 uint64_t m;
1496 int e;
1497
1498 if (x == 0e0 ) return 0x0000000000000000U;
1499 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1500 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1501 if (x != x ) return 0X7ff7ffffffffffffU;
1502
1503 m = frexp (x, &e) * 0x20000000000000U;
1504
1505 r = m & 0x8000000000000000;;
1506
1507 if (r)
1508 m = -m;
1509
1510 if (e <= -1022)
1511 {
1512 m &= 0x1fffffffffffffU;
1513 m >>= (-1021 - e);
1514 e = -1022;
1515 }
1516
1517 r |= ((uint64_t)(e + 1022)) << 52;
1518 r |= m & 0xfffffffffffffU;
1519 #endif
1520
1521 return r;
1522 }
1523
1524 /* converts an ieee double/binary64 to a double */
1525 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1526 ecb_function_ ecb_const double
1527 ecb_binary64_to_double (uint64_t x)
1528 {
1529 double r;
1530
1531 #if ECB_STDFP
1532 memcpy (&r, &x, 8);
1533 #else
1534 /* emulation, only works for normals and subnormals and +0 */
1535 int neg = x >> 63;
1536 int e = (x >> 52) & 0x7ffU;
1537
1538 x &= 0xfffffffffffffU;
1539
1540 if (e)
1541 x |= 0x10000000000000U;
1542 else
1543 e = 1;
1544
1545 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1546 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1547
1548 r = neg ? -r : r;
1549 #endif
1550
1551 return r;
1552 }
1553
1554 /* convert a float to ieee half/binary16 */
1555 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1556 ecb_function_ ecb_const uint16_t
1557 ecb_float_to_binary16 (float x)
1558 {
1559 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1560 }
1561
1562 /* convert an ieee half/binary16 to float */
1563 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1564 ecb_function_ ecb_const float
1565 ecb_binary16_to_float (uint16_t x)
1566 {
1567 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1568 }
1569
1570#endif
1571
1572#endif
1573
1574/* ECB.H END */
1575
1576#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1577/* if your architecture doesn't need memory fences, e.g. because it is
1578 * single-cpu/core, or if you use libev in a project that doesn't use libev
1579 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1580 * libev, in which cases the memory fences become nops.
1581 * alternatively, you can remove this #error and link against libpthread,
1582 * which will then provide the memory fences.
1583 */
1584# error "memory fences not defined for your architecture, please report"
1585#endif
1586
1587#ifndef ECB_MEMORY_FENCE
1588# define ECB_MEMORY_FENCE do { } while (0)
1589# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1590# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1591#endif
1592
1593#define inline_size ecb_inline
1594
1595#if EV_FEATURE_CODE
386# define inline_speed static inline 1596# define inline_speed ecb_inline
1597#else
1598# define inline_speed ecb_noinline static
387#endif 1599#endif
388 1600
1601/*****************************************************************************/
1602/* raw syscall wrappers */
1603
1604#if EV_NEED_SYSCALL
1605
1606#include <sys/syscall.h>
1607
1608/*
1609 * define some syscall wrappers for common architectures
1610 * this is mostly for nice looks during debugging, not performance.
1611 * our syscalls return < 0, not == -1, on error. which is good
1612 * enough for linux aio.
1613 * TODO: arm is also common nowadays, maybe even mips and x86
1614 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1615 */
1616#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1617 /* the costly errno access probably kills this for size optimisation */
1618
1619 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1620 ({ \
1621 long res; \
1622 register unsigned long r6 __asm__ ("r9" ); \
1623 register unsigned long r5 __asm__ ("r8" ); \
1624 register unsigned long r4 __asm__ ("r10"); \
1625 register unsigned long r3 __asm__ ("rdx"); \
1626 register unsigned long r2 __asm__ ("rsi"); \
1627 register unsigned long r1 __asm__ ("rdi"); \
1628 if (narg >= 6) r6 = (unsigned long)(arg6); \
1629 if (narg >= 5) r5 = (unsigned long)(arg5); \
1630 if (narg >= 4) r4 = (unsigned long)(arg4); \
1631 if (narg >= 3) r3 = (unsigned long)(arg3); \
1632 if (narg >= 2) r2 = (unsigned long)(arg2); \
1633 if (narg >= 1) r1 = (unsigned long)(arg1); \
1634 __asm__ __volatile__ ( \
1635 "syscall\n\t" \
1636 : "=a" (res) \
1637 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1638 : "cc", "r11", "cx", "memory"); \
1639 errno = -res; \
1640 res; \
1641 })
1642
1643#endif
1644
1645#ifdef ev_syscall
1646 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1647 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1648 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1649 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1650 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1651 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1652 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1653#else
1654 #define ev_syscall0(nr) syscall (nr)
1655 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1656 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1657 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1658 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1659 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1660 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1661#endif
1662
1663#endif
1664
1665/*****************************************************************************/
1666
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1667#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1668
1669#if EV_MINPRI == EV_MAXPRI
1670# define ABSPRI(w) (((W)w), 0)
1671#else
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1672# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1673#endif
391 1674
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1675#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */
394 1676
395typedef ev_watcher *W; 1677typedef ev_watcher *W;
396typedef ev_watcher_list *WL; 1678typedef ev_watcher_list *WL;
397typedef ev_watcher_time *WT; 1679typedef ev_watcher_time *WT;
398 1680
399#define ev_active(w) ((W)(w))->active 1681#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 1682#define ev_at(w) ((WT)(w))->at
401 1683
402#if EV_USE_REALTIME 1684#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1685/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 1686/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1687static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 1688#endif
407 1689
408#if EV_USE_MONOTONIC 1690#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1691static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 1692#endif
411 1693
1694#ifndef EV_FD_TO_WIN32_HANDLE
1695# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1696#endif
1697#ifndef EV_WIN32_HANDLE_TO_FD
1698# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1699#endif
1700#ifndef EV_WIN32_CLOSE_FD
1701# define EV_WIN32_CLOSE_FD(fd) close (fd)
1702#endif
1703
412#ifdef _WIN32 1704#ifdef _WIN32
413# include "ev_win32.c" 1705# include "ev_win32.c"
414#endif 1706#endif
415 1707
416/*****************************************************************************/ 1708/*****************************************************************************/
417 1709
1710#if EV_USE_LINUXAIO
1711# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1712#endif
1713
1714/* define a suitable floor function (only used by periodics atm) */
1715
1716#if EV_USE_FLOOR
1717# include <math.h>
1718# define ev_floor(v) floor (v)
1719#else
1720
1721#include <float.h>
1722
1723/* a floor() replacement function, should be independent of ev_tstamp type */
1724ecb_noinline
1725static ev_tstamp
1726ev_floor (ev_tstamp v)
1727{
1728 /* the choice of shift factor is not terribly important */
1729#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1731#else
1732 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1733#endif
1734
1735 /* special treatment for negative arguments */
1736 if (ecb_expect_false (v < 0.))
1737 {
1738 ev_tstamp f = -ev_floor (-v);
1739
1740 return f - (f == v ? 0 : 1);
1741 }
1742
1743 /* argument too large for an unsigned long? then reduce it */
1744 if (ecb_expect_false (v >= shift))
1745 {
1746 ev_tstamp f;
1747
1748 if (v == v - 1.)
1749 return v; /* very large numbers are assumed to be integer */
1750
1751 f = shift * ev_floor (v * (1. / shift));
1752 return f + ev_floor (v - f);
1753 }
1754
1755 /* fits into an unsigned long */
1756 return (unsigned long)v;
1757}
1758
1759#endif
1760
1761/*****************************************************************************/
1762
1763#ifdef __linux
1764# include <sys/utsname.h>
1765#endif
1766
1767ecb_noinline ecb_cold
1768static unsigned int
1769ev_linux_version (void)
1770{
1771#ifdef __linux
1772 unsigned int v = 0;
1773 struct utsname buf;
1774 int i;
1775 char *p = buf.release;
1776
1777 if (uname (&buf))
1778 return 0;
1779
1780 for (i = 3+1; --i; )
1781 {
1782 unsigned int c = 0;
1783
1784 for (;;)
1785 {
1786 if (*p >= '0' && *p <= '9')
1787 c = c * 10 + *p++ - '0';
1788 else
1789 {
1790 p += *p == '.';
1791 break;
1792 }
1793 }
1794
1795 v = (v << 8) | c;
1796 }
1797
1798 return v;
1799#else
1800 return 0;
1801#endif
1802}
1803
1804/*****************************************************************************/
1805
1806#if EV_AVOID_STDIO
1807ecb_noinline ecb_cold
1808static void
1809ev_printerr (const char *msg)
1810{
1811 write (STDERR_FILENO, msg, strlen (msg));
1812}
1813#endif
1814
418static void (*syserr_cb)(const char *msg); 1815static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
419 1816
1817ecb_cold
420void 1818void
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1819ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
422{ 1820{
423 syserr_cb = cb; 1821 syserr_cb = cb;
424} 1822}
425 1823
426static void noinline 1824ecb_noinline ecb_cold
1825static void
427ev_syserr (const char *msg) 1826ev_syserr (const char *msg)
428{ 1827{
429 if (!msg) 1828 if (!msg)
430 msg = "(libev) system error"; 1829 msg = "(libev) system error";
431 1830
432 if (syserr_cb) 1831 if (syserr_cb)
433 syserr_cb (msg); 1832 syserr_cb (msg);
434 else 1833 else
435 { 1834 {
1835#if EV_AVOID_STDIO
1836 ev_printerr (msg);
1837 ev_printerr (": ");
1838 ev_printerr (strerror (errno));
1839 ev_printerr ("\n");
1840#else
436 perror (msg); 1841 perror (msg);
1842#endif
437 abort (); 1843 abort ();
438 } 1844 }
439} 1845}
440 1846
441static void * 1847static void *
442ev_realloc_emul (void *ptr, long size) 1848ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
443{ 1849{
444 /* some systems, notably openbsd and darwin, fail to properly 1850 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1851 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1852 * the single unix specification, so work around them here.
1853 * recently, also (at least) fedora and debian started breaking it,
1854 * despite documenting it otherwise.
447 */ 1855 */
448 1856
449 if (size) 1857 if (size)
450 return realloc (ptr, size); 1858 return realloc (ptr, size);
451 1859
452 free (ptr); 1860 free (ptr);
453 return 0; 1861 return 0;
454} 1862}
455 1863
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1864static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
457 1865
1866ecb_cold
458void 1867void
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1868ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
460{ 1869{
461 alloc = cb; 1870 alloc = cb;
462} 1871}
463 1872
464inline_speed void * 1873inline_speed void *
… …
466{ 1875{
467 ptr = alloc (ptr, size); 1876 ptr = alloc (ptr, size);
468 1877
469 if (!ptr && size) 1878 if (!ptr && size)
470 { 1879 {
1880#if EV_AVOID_STDIO
1881 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1882#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1883 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1884#endif
472 abort (); 1885 abort ();
473 } 1886 }
474 1887
475 return ptr; 1888 return ptr;
476} 1889}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1891#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1892#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1893
481/*****************************************************************************/ 1894/*****************************************************************************/
482 1895
1896/* set in reify when reification needed */
1897#define EV_ANFD_REIFY 1
1898
1899/* file descriptor info structure */
483typedef struct 1900typedef struct
484{ 1901{
485 WL head; 1902 WL head;
486 unsigned char events; 1903 unsigned char events; /* the events watched for */
487 unsigned char reify; 1904 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1905 unsigned char emask; /* some backends store the actual kernel mask in here */
489 unsigned char unused; 1906 unsigned char eflags; /* flags field for use by backends */
490#if EV_USE_EPOLL 1907#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 1908 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 1909#endif
493#if EV_SELECT_IS_WINSOCKET 1910#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 1911 SOCKET handle;
495#endif 1912#endif
1913#if EV_USE_IOCP
1914 OVERLAPPED or, ow;
1915#endif
496} ANFD; 1916} ANFD;
497 1917
1918/* stores the pending event set for a given watcher */
498typedef struct 1919typedef struct
499{ 1920{
500 W w; 1921 W w;
501 int events; 1922 int events; /* the pending event set for the given watcher */
502} ANPENDING; 1923} ANPENDING;
503 1924
504#if EV_USE_INOTIFY 1925#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 1926/* hash table entry per inotify-id */
506typedef struct 1927typedef struct
… …
509} ANFS; 1930} ANFS;
510#endif 1931#endif
511 1932
512/* Heap Entry */ 1933/* Heap Entry */
513#if EV_HEAP_CACHE_AT 1934#if EV_HEAP_CACHE_AT
1935 /* a heap element */
514 typedef struct { 1936 typedef struct {
515 ev_tstamp at; 1937 ev_tstamp at;
516 WT w; 1938 WT w;
517 } ANHE; 1939 } ANHE;
518 1940
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1941 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1942 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1943 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 1944#else
1945 /* a heap element */
523 typedef WT ANHE; 1946 typedef WT ANHE;
524 1947
525 #define ANHE_w(he) (he) 1948 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 1949 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 1950 #define ANHE_at_cache(he)
… …
538 #undef VAR 1961 #undef VAR
539 }; 1962 };
540 #include "ev_wrap.h" 1963 #include "ev_wrap.h"
541 1964
542 static struct ev_loop default_loop_struct; 1965 static struct ev_loop default_loop_struct;
543 struct ev_loop *ev_default_loop_ptr; 1966 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
544 1967
545#else 1968#else
546 1969
547 ev_tstamp ev_rt_now; 1970 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
548 #define VAR(name,decl) static decl; 1971 #define VAR(name,decl) static decl;
549 #include "ev_vars.h" 1972 #include "ev_vars.h"
550 #undef VAR 1973 #undef VAR
551 1974
552 static int ev_default_loop_ptr; 1975 static int ev_default_loop_ptr;
553 1976
554#endif 1977#endif
555 1978
1979#if EV_FEATURE_API
1980# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1981# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1982# define EV_INVOKE_PENDING invoke_cb (EV_A)
1983#else
1984# define EV_RELEASE_CB (void)0
1985# define EV_ACQUIRE_CB (void)0
1986# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1987#endif
1988
1989#define EVBREAK_RECURSE 0x80
1990
556/*****************************************************************************/ 1991/*****************************************************************************/
557 1992
1993#ifndef EV_HAVE_EV_TIME
558ev_tstamp 1994ev_tstamp
559ev_time (void) 1995ev_time (void) EV_NOEXCEPT
560{ 1996{
561#if EV_USE_REALTIME 1997#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 1998 if (ecb_expect_true (have_realtime))
563 { 1999 {
564 struct timespec ts; 2000 struct timespec ts;
565 clock_gettime (CLOCK_REALTIME, &ts); 2001 clock_gettime (CLOCK_REALTIME, &ts);
566 return ts.tv_sec + ts.tv_nsec * 1e-9; 2002 return EV_TS_GET (ts);
567 } 2003 }
568#endif 2004#endif
569 2005
570 struct timeval tv; 2006 struct timeval tv;
571 gettimeofday (&tv, 0); 2007 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 2008 return EV_TV_GET (tv);
573} 2009}
2010#endif
574 2011
575inline_size ev_tstamp 2012inline_size ev_tstamp
576get_clock (void) 2013get_clock (void)
577{ 2014{
578#if EV_USE_MONOTONIC 2015#if EV_USE_MONOTONIC
579 if (expect_true (have_monotonic)) 2016 if (ecb_expect_true (have_monotonic))
580 { 2017 {
581 struct timespec ts; 2018 struct timespec ts;
582 clock_gettime (CLOCK_MONOTONIC, &ts); 2019 clock_gettime (CLOCK_MONOTONIC, &ts);
583 return ts.tv_sec + ts.tv_nsec * 1e-9; 2020 return EV_TS_GET (ts);
584 } 2021 }
585#endif 2022#endif
586 2023
587 return ev_time (); 2024 return ev_time ();
588} 2025}
589 2026
590#if EV_MULTIPLICITY 2027#if EV_MULTIPLICITY
591ev_tstamp 2028ev_tstamp
592ev_now (EV_P) 2029ev_now (EV_P) EV_NOEXCEPT
593{ 2030{
594 return ev_rt_now; 2031 return ev_rt_now;
595} 2032}
596#endif 2033#endif
597 2034
598void 2035void
599ev_sleep (ev_tstamp delay) 2036ev_sleep (ev_tstamp delay) EV_NOEXCEPT
600{ 2037{
601 if (delay > 0.) 2038 if (delay > 0.)
602 { 2039 {
603#if EV_USE_NANOSLEEP 2040#if EV_USE_NANOSLEEP
604 struct timespec ts; 2041 struct timespec ts;
605 2042
606 ts.tv_sec = (time_t)delay; 2043 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 2044 nanosleep (&ts, 0);
610#elif defined(_WIN32) 2045#elif defined _WIN32
2046 /* maybe this should round up, as ms is very low resolution */
2047 /* compared to select (µs) or nanosleep (ns) */
611 Sleep ((unsigned long)(delay * 1e3)); 2048 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
612#else 2049#else
613 struct timeval tv; 2050 struct timeval tv;
614 2051
615 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2052 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 2053 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 2054 /* by older ones */
2055 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 2056 select (0, 0, 0, 0, &tv);
622#endif 2057#endif
623 } 2058 }
624} 2059}
625 2060
626/*****************************************************************************/ 2061/*****************************************************************************/
627 2062
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 2063#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 2064
2065/* find a suitable new size for the given array, */
2066/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 2067inline_size int
631array_nextsize (int elem, int cur, int cnt) 2068array_nextsize (int elem, int cur, int cnt)
632{ 2069{
633 int ncur = cur + 1; 2070 int ncur = cur + 1;
634 2071
635 do 2072 do
636 ncur <<= 1; 2073 ncur <<= 1;
637 while (cnt > ncur); 2074 while (cnt > ncur);
638 2075
639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2076 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2077 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
641 { 2078 {
642 ncur *= elem; 2079 ncur *= elem;
643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2080 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
644 ncur = ncur - sizeof (void *) * 4; 2081 ncur = ncur - sizeof (void *) * 4;
… …
646 } 2083 }
647 2084
648 return ncur; 2085 return ncur;
649} 2086}
650 2087
651static noinline void * 2088ecb_noinline ecb_cold
2089static void *
652array_realloc (int elem, void *base, int *cur, int cnt) 2090array_realloc (int elem, void *base, int *cur, int cnt)
653{ 2091{
654 *cur = array_nextsize (elem, *cur, cnt); 2092 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 2093 return ev_realloc (base, elem * *cur);
656} 2094}
657 2095
2096#define array_needsize_noinit(base,offset,count)
2097
658#define array_init_zero(base,count) \ 2098#define array_needsize_zerofill(base,offset,count) \
659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2099 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
660 2100
661#define array_needsize(type,base,cur,cnt,init) \ 2101#define array_needsize(type,base,cur,cnt,init) \
662 if (expect_false ((cnt) > (cur))) \ 2102 if (ecb_expect_false ((cnt) > (cur))) \
663 { \ 2103 { \
664 int ocur_ = (cur); \ 2104 ecb_unused int ocur_ = (cur); \
665 (base) = (type *)array_realloc \ 2105 (base) = (type *)array_realloc \
666 (sizeof (type), (base), &(cur), (cnt)); \ 2106 (sizeof (type), (base), &(cur), (cnt)); \
667 init ((base) + (ocur_), (cur) - ocur_); \ 2107 init ((base), ocur_, ((cur) - ocur_)); \
668 } 2108 }
669 2109
670#if 0 2110#if 0
671#define array_slim(type,stem) \ 2111#define array_slim(type,stem) \
672 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2112 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
680#define array_free(stem, idx) \ 2120#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2121 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 2122
683/*****************************************************************************/ 2123/*****************************************************************************/
684 2124
685void noinline 2125/* dummy callback for pending events */
2126ecb_noinline
2127static void
2128pendingcb (EV_P_ ev_prepare *w, int revents)
2129{
2130}
2131
2132ecb_noinline
2133void
686ev_feed_event (EV_P_ void *w, int revents) 2134ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
687{ 2135{
688 W w_ = (W)w; 2136 W w_ = (W)w;
689 int pri = ABSPRI (w_); 2137 int pri = ABSPRI (w_);
690 2138
691 if (expect_false (w_->pending)) 2139 if (ecb_expect_false (w_->pending))
692 pendings [pri][w_->pending - 1].events |= revents; 2140 pendings [pri][w_->pending - 1].events |= revents;
693 else 2141 else
694 { 2142 {
695 w_->pending = ++pendingcnt [pri]; 2143 w_->pending = ++pendingcnt [pri];
696 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2144 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
697 pendings [pri][w_->pending - 1].w = w_; 2145 pendings [pri][w_->pending - 1].w = w_;
698 pendings [pri][w_->pending - 1].events = revents; 2146 pendings [pri][w_->pending - 1].events = revents;
699 } 2147 }
2148
2149 pendingpri = NUMPRI - 1;
700} 2150}
701 2151
702inline_speed void 2152inline_speed void
703feed_reverse (EV_P_ W w) 2153feed_reverse (EV_P_ W w)
704{ 2154{
705 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2155 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
706 rfeeds [rfeedcnt++] = w; 2156 rfeeds [rfeedcnt++] = w;
707} 2157}
708 2158
709inline_size void 2159inline_size void
710feed_reverse_done (EV_P_ int revents) 2160feed_reverse_done (EV_P_ int revents)
… …
724} 2174}
725 2175
726/*****************************************************************************/ 2176/*****************************************************************************/
727 2177
728inline_speed void 2178inline_speed void
729fd_event (EV_P_ int fd, int revents) 2179fd_event_nocheck (EV_P_ int fd, int revents)
730{ 2180{
731 ANFD *anfd = anfds + fd; 2181 ANFD *anfd = anfds + fd;
732 ev_io *w; 2182 ev_io *w;
733 2183
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2184 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 2188 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 2189 ev_feed_event (EV_A_ (W)w, ev);
740 } 2190 }
741} 2191}
742 2192
743void 2193/* do not submit kernel events for fds that have reify set */
2194/* because that means they changed while we were polling for new events */
2195inline_speed void
744ev_feed_fd_event (EV_P_ int fd, int revents) 2196fd_event (EV_P_ int fd, int revents)
2197{
2198 ANFD *anfd = anfds + fd;
2199
2200 if (ecb_expect_true (!anfd->reify))
2201 fd_event_nocheck (EV_A_ fd, revents);
2202}
2203
2204void
2205ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
745{ 2206{
746 if (fd >= 0 && fd < anfdmax) 2207 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 2208 fd_event_nocheck (EV_A_ fd, revents);
748} 2209}
749 2210
2211/* make sure the external fd watch events are in-sync */
2212/* with the kernel/libev internal state */
750inline_size void 2213inline_size void
751fd_reify (EV_P) 2214fd_reify (EV_P)
752{ 2215{
753 int i; 2216 int i;
2217
2218#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2219 for (i = 0; i < fdchangecnt; ++i)
2220 {
2221 int fd = fdchanges [i];
2222 ANFD *anfd = anfds + fd;
2223
2224 if (anfd->reify & EV__IOFDSET && anfd->head)
2225 {
2226 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2227
2228 if (handle != anfd->handle)
2229 {
2230 unsigned long arg;
2231
2232 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2233
2234 /* handle changed, but fd didn't - we need to do it in two steps */
2235 backend_modify (EV_A_ fd, anfd->events, 0);
2236 anfd->events = 0;
2237 anfd->handle = handle;
2238 }
2239 }
2240 }
2241#endif
754 2242
755 for (i = 0; i < fdchangecnt; ++i) 2243 for (i = 0; i < fdchangecnt; ++i)
756 { 2244 {
757 int fd = fdchanges [i]; 2245 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 2246 ANFD *anfd = anfds + fd;
759 ev_io *w; 2247 ev_io *w;
760 2248
761 unsigned char events = 0; 2249 unsigned char o_events = anfd->events;
2250 unsigned char o_reify = anfd->reify;
762 2251
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2252 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 2253
766#if EV_SELECT_IS_WINSOCKET 2254 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 2255 {
769 unsigned long arg; 2256 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 2257
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2258 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 2259 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 2260
774 #endif 2261 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2262 o_reify = EV__IOFDSET; /* actually |= */
776 } 2263 }
777#endif
778 2264
779 { 2265 if (o_reify & EV__IOFDSET)
780 unsigned char o_events = anfd->events;
781 unsigned char o_reify = anfd->reify;
782
783 anfd->reify = 0;
784 anfd->events = events;
785
786 if (o_events != events || o_reify & EV__IOFDSET)
787 backend_modify (EV_A_ fd, o_events, events); 2266 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 2267 }
790 2268
791 fdchangecnt = 0; 2269 fdchangecnt = 0;
792} 2270}
793 2271
2272/* something about the given fd changed */
794inline_size void 2273inline_size
2274void
795fd_change (EV_P_ int fd, int flags) 2275fd_change (EV_P_ int fd, int flags)
796{ 2276{
797 unsigned char reify = anfds [fd].reify; 2277 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 2278 anfds [fd].reify |= flags;
799 2279
800 if (expect_true (!reify)) 2280 if (ecb_expect_true (!reify))
801 { 2281 {
802 ++fdchangecnt; 2282 ++fdchangecnt;
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2283 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
804 fdchanges [fdchangecnt - 1] = fd; 2284 fdchanges [fdchangecnt - 1] = fd;
805 } 2285 }
806} 2286}
807 2287
2288/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 2289inline_speed ecb_cold void
809fd_kill (EV_P_ int fd) 2290fd_kill (EV_P_ int fd)
810{ 2291{
811 ev_io *w; 2292 ev_io *w;
812 2293
813 while ((w = (ev_io *)anfds [fd].head)) 2294 while ((w = (ev_io *)anfds [fd].head))
… …
815 ev_io_stop (EV_A_ w); 2296 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2297 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 2298 }
818} 2299}
819 2300
2301/* check whether the given fd is actually valid, for error recovery */
820inline_size int 2302inline_size ecb_cold int
821fd_valid (int fd) 2303fd_valid (int fd)
822{ 2304{
823#ifdef _WIN32 2305#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 2306 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 2307#else
826 return fcntl (fd, F_GETFD) != -1; 2308 return fcntl (fd, F_GETFD) != -1;
827#endif 2309#endif
828} 2310}
829 2311
830/* called on EBADF to verify fds */ 2312/* called on EBADF to verify fds */
831static void noinline 2313ecb_noinline ecb_cold
2314static void
832fd_ebadf (EV_P) 2315fd_ebadf (EV_P)
833{ 2316{
834 int fd; 2317 int fd;
835 2318
836 for (fd = 0; fd < anfdmax; ++fd) 2319 for (fd = 0; fd < anfdmax; ++fd)
… …
838 if (!fd_valid (fd) && errno == EBADF) 2321 if (!fd_valid (fd) && errno == EBADF)
839 fd_kill (EV_A_ fd); 2322 fd_kill (EV_A_ fd);
840} 2323}
841 2324
842/* called on ENOMEM in select/poll to kill some fds and retry */ 2325/* called on ENOMEM in select/poll to kill some fds and retry */
843static void noinline 2326ecb_noinline ecb_cold
2327static void
844fd_enomem (EV_P) 2328fd_enomem (EV_P)
845{ 2329{
846 int fd; 2330 int fd;
847 2331
848 for (fd = anfdmax; fd--; ) 2332 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 2333 if (anfds [fd].events)
850 { 2334 {
851 fd_kill (EV_A_ fd); 2335 fd_kill (EV_A_ fd);
852 return; 2336 break;
853 } 2337 }
854} 2338}
855 2339
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 2340/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 2341ecb_noinline
2342static void
858fd_rearm_all (EV_P) 2343fd_rearm_all (EV_P)
859{ 2344{
860 int fd; 2345 int fd;
861 2346
862 for (fd = 0; fd < anfdmax; ++fd) 2347 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 2348 if (anfds [fd].events)
864 { 2349 {
865 anfds [fd].events = 0; 2350 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 2351 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 2352 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 2353 }
869} 2354}
870 2355
2356/* used to prepare libev internal fd's */
2357/* this is not fork-safe */
2358inline_speed void
2359fd_intern (int fd)
2360{
2361#ifdef _WIN32
2362 unsigned long arg = 1;
2363 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2364#else
2365 fcntl (fd, F_SETFD, FD_CLOEXEC);
2366 fcntl (fd, F_SETFL, O_NONBLOCK);
2367#endif
2368}
2369
871/*****************************************************************************/ 2370/*****************************************************************************/
872 2371
873/* 2372/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 2373 * the heap functions want a real array index. array index 0 is guaranteed to not
875 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2374 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 2375 * the branching factor of the d-tree.
877 */ 2376 */
878 2377
879/* 2378/*
… …
901 ev_tstamp minat; 2400 ev_tstamp minat;
902 ANHE *minpos; 2401 ANHE *minpos;
903 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2402 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
904 2403
905 /* find minimum child */ 2404 /* find minimum child */
906 if (expect_true (pos + DHEAP - 1 < E)) 2405 if (ecb_expect_true (pos + DHEAP - 1 < E))
907 { 2406 {
908 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2407 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
909 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2408 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
910 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2409 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
911 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2410 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
912 } 2411 }
913 else if (pos < E) 2412 else if (pos < E)
914 { 2413 {
915 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2414 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
916 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2415 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
917 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2416 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
918 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2417 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
919 } 2418 }
920 else 2419 else
921 break; 2420 break;
922 2421
923 if (ANHE_at (he) <= minat) 2422 if (ANHE_at (he) <= minat)
… …
931 2430
932 heap [k] = he; 2431 heap [k] = he;
933 ev_active (ANHE_w (he)) = k; 2432 ev_active (ANHE_w (he)) = k;
934} 2433}
935 2434
936#else /* 4HEAP */ 2435#else /* not 4HEAP */
937 2436
938#define HEAP0 1 2437#define HEAP0 1
939#define HPARENT(k) ((k) >> 1) 2438#define HPARENT(k) ((k) >> 1)
940#define UPHEAP_DONE(p,k) (!(p)) 2439#define UPHEAP_DONE(p,k) (!(p))
941 2440
… …
947 2446
948 for (;;) 2447 for (;;)
949 { 2448 {
950 int c = k << 1; 2449 int c = k << 1;
951 2450
952 if (c > N + HEAP0 - 1) 2451 if (c >= N + HEAP0)
953 break; 2452 break;
954 2453
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2454 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 2455 ? 1 : 0;
957 2456
… …
989 2488
990 heap [k] = he; 2489 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 2490 ev_active (ANHE_w (he)) = k;
992} 2491}
993 2492
2493/* move an element suitably so it is in a correct place */
994inline_size void 2494inline_size void
995adjustheap (ANHE *heap, int N, int k) 2495adjustheap (ANHE *heap, int N, int k)
996{ 2496{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2497 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 2498 upheap (heap, k);
999 else 2499 else
1000 downheap (heap, N, k); 2500 downheap (heap, N, k);
1001} 2501}
1002 2502
… …
1012 upheap (heap, i + HEAP0); 2512 upheap (heap, i + HEAP0);
1013} 2513}
1014 2514
1015/*****************************************************************************/ 2515/*****************************************************************************/
1016 2516
2517/* associate signal watchers to a signal signal */
1017typedef struct 2518typedef struct
1018{ 2519{
2520 EV_ATOMIC_T pending;
2521#if EV_MULTIPLICITY
2522 EV_P;
2523#endif
1019 WL head; 2524 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 2525} ANSIG;
1022 2526
1023static ANSIG *signals; 2527static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 2528
1028/*****************************************************************************/ 2529/*****************************************************************************/
1029 2530
2531#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2532
2533ecb_noinline ecb_cold
2534static void
2535evpipe_init (EV_P)
2536{
2537 if (!ev_is_active (&pipe_w))
2538 {
2539 int fds [2];
2540
2541# if EV_USE_EVENTFD
2542 fds [0] = -1;
2543 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2544 if (fds [1] < 0 && errno == EINVAL)
2545 fds [1] = eventfd (0, 0);
2546
2547 if (fds [1] < 0)
2548# endif
2549 {
2550 while (pipe (fds))
2551 ev_syserr ("(libev) error creating signal/async pipe");
2552
2553 fd_intern (fds [0]);
2554 }
2555
2556 evpipe [0] = fds [0];
2557
2558 if (evpipe [1] < 0)
2559 evpipe [1] = fds [1]; /* first call, set write fd */
2560 else
2561 {
2562 /* on subsequent calls, do not change evpipe [1] */
2563 /* so that evpipe_write can always rely on its value. */
2564 /* this branch does not do anything sensible on windows, */
2565 /* so must not be executed on windows */
2566
2567 dup2 (fds [1], evpipe [1]);
2568 close (fds [1]);
2569 }
2570
2571 fd_intern (evpipe [1]);
2572
2573 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2574 ev_io_start (EV_A_ &pipe_w);
2575 ev_unref (EV_A); /* watcher should not keep loop alive */
2576 }
2577}
2578
1030inline_speed void 2579inline_speed void
1031fd_intern (int fd) 2580evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1032{ 2581{
1033#ifdef _WIN32 2582 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1034 unsigned long arg = 1;
1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1036#else
1037 fcntl (fd, F_SETFD, FD_CLOEXEC);
1038 fcntl (fd, F_SETFL, O_NONBLOCK);
1039#endif
1040}
1041 2583
1042static void noinline 2584 if (ecb_expect_true (*flag))
1043evpipe_init (EV_P) 2585 return;
1044{ 2586
1045 if (!ev_is_active (&pipeev)) 2587 *flag = 1;
2588 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2589
2590 pipe_write_skipped = 1;
2591
2592 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2593
2594 if (pipe_write_wanted)
1046 { 2595 {
2596 int old_errno;
2597
2598 pipe_write_skipped = 0;
2599 ECB_MEMORY_FENCE_RELEASE;
2600
2601 old_errno = errno; /* save errno because write will clobber it */
2602
1047#if EV_USE_EVENTFD 2603#if EV_USE_EVENTFD
1048 if ((evfd = eventfd (0, 0)) >= 0) 2604 if (evpipe [0] < 0)
1049 { 2605 {
1050 evpipe [0] = -1; 2606 uint64_t counter = 1;
1051 fd_intern (evfd); 2607 write (evpipe [1], &counter, sizeof (uint64_t));
1052 ev_io_set (&pipeev, evfd, EV_READ);
1053 } 2608 }
1054 else 2609 else
1055#endif 2610#endif
1056 { 2611 {
1057 while (pipe (evpipe)) 2612#ifdef _WIN32
1058 ev_syserr ("(libev) error creating signal/async pipe"); 2613 WSABUF buf;
1059 2614 DWORD sent;
1060 fd_intern (evpipe [0]); 2615 buf.buf = (char *)&buf;
1061 fd_intern (evpipe [1]); 2616 buf.len = 1;
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 2617 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2618#else
2619 write (evpipe [1], &(evpipe [1]), 1);
2620#endif
1063 } 2621 }
1064 2622
1065 ev_io_start (EV_A_ &pipeev); 2623 errno = old_errno;
1066 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 }
1068}
1069
1070inline_size void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{
1073 if (!*flag)
1074 { 2624 }
1075 int old_errno = errno; /* save errno because write might clobber it */ 2625}
1076 2626
1077 *flag = 1; 2627/* called whenever the libev signal pipe */
2628/* got some events (signal, async) */
2629static void
2630pipecb (EV_P_ ev_io *iow, int revents)
2631{
2632 int i;
1078 2633
2634 if (revents & EV_READ)
2635 {
1079#if EV_USE_EVENTFD 2636#if EV_USE_EVENTFD
1080 if (evfd >= 0) 2637 if (evpipe [0] < 0)
1081 { 2638 {
1082 uint64_t counter = 1; 2639 uint64_t counter;
1083 write (evfd, &counter, sizeof (uint64_t)); 2640 read (evpipe [1], &counter, sizeof (uint64_t));
1084 } 2641 }
1085 else 2642 else
1086#endif 2643#endif
1087 write (evpipe [1], &old_errno, 1); 2644 {
1088
1089 errno = old_errno;
1090 }
1091}
1092
1093static void
1094pipecb (EV_P_ ev_io *iow, int revents)
1095{
1096#if EV_USE_EVENTFD
1097 if (evfd >= 0)
1098 {
1099 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t));
1101 }
1102 else
1103#endif
1104 {
1105 char dummy; 2645 char dummy[4];
2646#ifdef _WIN32
2647 WSABUF buf;
2648 DWORD recvd;
2649 DWORD flags = 0;
2650 buf.buf = dummy;
2651 buf.len = sizeof (dummy);
2652 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2653#else
1106 read (evpipe [0], &dummy, 1); 2654 read (evpipe [0], &dummy, sizeof (dummy));
2655#endif
2656 }
2657 }
2658
2659 pipe_write_skipped = 0;
2660
2661 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2662
2663#if EV_SIGNAL_ENABLE
2664 if (sig_pending)
1107 } 2665 {
2666 sig_pending = 0;
1108 2667
1109 if (gotsig && ev_is_default_loop (EV_A)) 2668 ECB_MEMORY_FENCE;
1110 {
1111 int signum;
1112 gotsig = 0;
1113 2669
1114 for (signum = signalmax; signum--; ) 2670 for (i = EV_NSIG - 1; i--; )
1115 if (signals [signum].gotsig) 2671 if (ecb_expect_false (signals [i].pending))
1116 ev_feed_signal_event (EV_A_ signum + 1); 2672 ev_feed_signal_event (EV_A_ i + 1);
1117 } 2673 }
2674#endif
1118 2675
1119#if EV_ASYNC_ENABLE 2676#if EV_ASYNC_ENABLE
1120 if (gotasync) 2677 if (async_pending)
1121 { 2678 {
1122 int i; 2679 async_pending = 0;
1123 gotasync = 0; 2680
2681 ECB_MEMORY_FENCE;
1124 2682
1125 for (i = asynccnt; i--; ) 2683 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 2684 if (asyncs [i]->sent)
1127 { 2685 {
1128 asyncs [i]->sent = 0; 2686 asyncs [i]->sent = 0;
2687 ECB_MEMORY_FENCE_RELEASE;
1129 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2688 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1130 } 2689 }
1131 } 2690 }
1132#endif 2691#endif
1133} 2692}
1134 2693
1135/*****************************************************************************/ 2694/*****************************************************************************/
1136 2695
2696void
2697ev_feed_signal (int signum) EV_NOEXCEPT
2698{
2699#if EV_MULTIPLICITY
2700 EV_P;
2701 ECB_MEMORY_FENCE_ACQUIRE;
2702 EV_A = signals [signum - 1].loop;
2703
2704 if (!EV_A)
2705 return;
2706#endif
2707
2708 signals [signum - 1].pending = 1;
2709 evpipe_write (EV_A_ &sig_pending);
2710}
2711
1137static void 2712static void
1138ev_sighandler (int signum) 2713ev_sighandler (int signum)
1139{ 2714{
2715#ifdef _WIN32
2716 signal (signum, ev_sighandler);
2717#endif
2718
2719 ev_feed_signal (signum);
2720}
2721
2722ecb_noinline
2723void
2724ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2725{
2726 WL w;
2727
2728 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2729 return;
2730
2731 --signum;
2732
1140#if EV_MULTIPLICITY 2733#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct; 2734 /* it is permissible to try to feed a signal to the wrong loop */
1142#endif 2735 /* or, likely more useful, feeding a signal nobody is waiting for */
1143 2736
1144#if _WIN32 2737 if (ecb_expect_false (signals [signum].loop != EV_A))
1145 signal (signum, ev_sighandler);
1146#endif
1147
1148 signals [signum - 1].gotsig = 1;
1149 evpipe_write (EV_A_ &gotsig);
1150}
1151
1152void noinline
1153ev_feed_signal_event (EV_P_ int signum)
1154{
1155 WL w;
1156
1157#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1159#endif
1160
1161 --signum;
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 2738 return;
2739#endif
1165 2740
1166 signals [signum].gotsig = 0; 2741 signals [signum].pending = 0;
2742 ECB_MEMORY_FENCE_RELEASE;
1167 2743
1168 for (w = signals [signum].head; w; w = w->next) 2744 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2745 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 2746}
1171 2747
2748#if EV_USE_SIGNALFD
2749static void
2750sigfdcb (EV_P_ ev_io *iow, int revents)
2751{
2752 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2753
2754 for (;;)
2755 {
2756 ssize_t res = read (sigfd, si, sizeof (si));
2757
2758 /* not ISO-C, as res might be -1, but works with SuS */
2759 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2760 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2761
2762 if (res < (ssize_t)sizeof (si))
2763 break;
2764 }
2765}
2766#endif
2767
2768#endif
2769
1172/*****************************************************************************/ 2770/*****************************************************************************/
1173 2771
2772#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 2773static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 2774
1178static ev_signal childev; 2775static ev_signal childev;
1179 2776
1180#ifndef WIFCONTINUED 2777#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 2778# define WIFCONTINUED(status) 0
1182#endif 2779#endif
1183 2780
2781/* handle a single child status event */
1184inline_speed void 2782inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 2783child_reap (EV_P_ int chain, int pid, int status)
1186{ 2784{
1187 ev_child *w; 2785 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2786 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 2787
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2788 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 2789 {
1192 if ((w->pid == pid || !w->pid) 2790 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 2791 && (!traced || (w->flags & 1)))
1194 { 2792 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2793 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 2800
1203#ifndef WCONTINUED 2801#ifndef WCONTINUED
1204# define WCONTINUED 0 2802# define WCONTINUED 0
1205#endif 2803#endif
1206 2804
2805/* called on sigchld etc., calls waitpid */
1207static void 2806static void
1208childcb (EV_P_ ev_signal *sw, int revents) 2807childcb (EV_P_ ev_signal *sw, int revents)
1209{ 2808{
1210 int pid, status; 2809 int pid, status;
1211 2810
… …
1219 /* make sure we are called again until all children have been reaped */ 2818 /* make sure we are called again until all children have been reaped */
1220 /* we need to do it this way so that the callback gets called before we continue */ 2819 /* we need to do it this way so that the callback gets called before we continue */
1221 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2820 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 2821
1223 child_reap (EV_A_ pid, pid, status); 2822 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 2823 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2824 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 2825}
1227 2826
1228#endif 2827#endif
1229 2828
1230/*****************************************************************************/ 2829/*****************************************************************************/
1231 2830
2831#if EV_USE_IOCP
2832# include "ev_iocp.c"
2833#endif
1232#if EV_USE_PORT 2834#if EV_USE_PORT
1233# include "ev_port.c" 2835# include "ev_port.c"
1234#endif 2836#endif
1235#if EV_USE_KQUEUE 2837#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 2838# include "ev_kqueue.c"
1237#endif 2839#endif
1238#if EV_USE_EPOLL 2840#if EV_USE_EPOLL
1239# include "ev_epoll.c" 2841# include "ev_epoll.c"
1240#endif 2842#endif
2843#if EV_USE_LINUXAIO
2844# include "ev_linuxaio.c"
2845#endif
2846#if EV_USE_IOURING
2847# include "ev_iouring.c"
2848#endif
1241#if EV_USE_POLL 2849#if EV_USE_POLL
1242# include "ev_poll.c" 2850# include "ev_poll.c"
1243#endif 2851#endif
1244#if EV_USE_SELECT 2852#if EV_USE_SELECT
1245# include "ev_select.c" 2853# include "ev_select.c"
1246#endif 2854#endif
1247 2855
1248int 2856ecb_cold int
1249ev_version_major (void) 2857ev_version_major (void) EV_NOEXCEPT
1250{ 2858{
1251 return EV_VERSION_MAJOR; 2859 return EV_VERSION_MAJOR;
1252} 2860}
1253 2861
1254int 2862ecb_cold int
1255ev_version_minor (void) 2863ev_version_minor (void) EV_NOEXCEPT
1256{ 2864{
1257 return EV_VERSION_MINOR; 2865 return EV_VERSION_MINOR;
1258} 2866}
1259 2867
1260/* return true if we are running with elevated privileges and should ignore env variables */ 2868/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 2869inline_size ecb_cold int
1262enable_secure (void) 2870enable_secure (void)
1263{ 2871{
1264#ifdef _WIN32 2872#ifdef _WIN32
1265 return 0; 2873 return 0;
1266#else 2874#else
1267 return getuid () != geteuid () 2875 return getuid () != geteuid ()
1268 || getgid () != getegid (); 2876 || getgid () != getegid ();
1269#endif 2877#endif
1270} 2878}
1271 2879
2880ecb_cold
1272unsigned int 2881unsigned int
1273ev_supported_backends (void) 2882ev_supported_backends (void) EV_NOEXCEPT
1274{ 2883{
1275 unsigned int flags = 0; 2884 unsigned int flags = 0;
1276 2885
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2886 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1278 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2887 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1279 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2888 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2889 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2890 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1280 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2891 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2892 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1282 2893
1283 return flags; 2894 return flags;
1284} 2895}
1285 2896
2897ecb_cold
1286unsigned int 2898unsigned int
1287ev_recommended_backends (void) 2899ev_recommended_backends (void) EV_NOEXCEPT
1288{ 2900{
1289 unsigned int flags = ev_supported_backends (); 2901 unsigned int flags = ev_supported_backends ();
1290 2902
1291#ifndef __NetBSD__ 2903#ifndef __NetBSD__
1292 /* kqueue is borked on everything but netbsd apparently */ 2904 /* kqueue is borked on everything but netbsd apparently */
… …
1296#ifdef __APPLE__ 2908#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 2909 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2910 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2911 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 2912#endif
2913#ifdef __FreeBSD__
2914 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2915#endif
2916
2917 /* TODO: linuxaio is very experimental */
2918#if !EV_RECOMMEND_LINUXAIO
2919 flags &= ~EVBACKEND_LINUXAIO;
2920#endif
2921 /* TODO: linuxaio is super experimental */
2922#if !EV_RECOMMEND_IOURING
2923 flags &= ~EVBACKEND_IOURING;
2924#endif
1301 2925
1302 return flags; 2926 return flags;
1303} 2927}
1304 2928
2929ecb_cold
1305unsigned int 2930unsigned int
1306ev_embeddable_backends (void) 2931ev_embeddable_backends (void) EV_NOEXCEPT
1307{ 2932{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2933 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 2934
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2935 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1311 /* please fix it and tell me how to detect the fix */ 2936 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 2937 flags &= ~EVBACKEND_EPOLL;
2938
2939 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2940
2941 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2942 * because our backend_fd is the epoll fd we need as fallback.
2943 * if the kernel ever is fixed, this might change...
2944 */
1313 2945
1314 return flags; 2946 return flags;
1315} 2947}
1316 2948
1317unsigned int 2949unsigned int
1318ev_backend (EV_P) 2950ev_backend (EV_P) EV_NOEXCEPT
1319{ 2951{
1320 return backend; 2952 return backend;
1321} 2953}
1322 2954
2955#if EV_FEATURE_API
1323unsigned int 2956unsigned int
1324ev_loop_count (EV_P) 2957ev_iteration (EV_P) EV_NOEXCEPT
1325{ 2958{
1326 return loop_count; 2959 return loop_count;
1327} 2960}
1328 2961
2962unsigned int
2963ev_depth (EV_P) EV_NOEXCEPT
2964{
2965 return loop_depth;
2966}
2967
1329void 2968void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2969ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1331{ 2970{
1332 io_blocktime = interval; 2971 io_blocktime = interval;
1333} 2972}
1334 2973
1335void 2974void
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2975ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1337{ 2976{
1338 timeout_blocktime = interval; 2977 timeout_blocktime = interval;
1339} 2978}
1340 2979
1341static void noinline 2980void
2981ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2982{
2983 userdata = data;
2984}
2985
2986void *
2987ev_userdata (EV_P) EV_NOEXCEPT
2988{
2989 return userdata;
2990}
2991
2992void
2993ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2994{
2995 invoke_cb = invoke_pending_cb;
2996}
2997
2998void
2999ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
3000{
3001 release_cb = release;
3002 acquire_cb = acquire;
3003}
3004#endif
3005
3006/* initialise a loop structure, must be zero-initialised */
3007ecb_noinline ecb_cold
3008static void
1342loop_init (EV_P_ unsigned int flags) 3009loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1343{ 3010{
1344 if (!backend) 3011 if (!backend)
1345 { 3012 {
3013 origflags = flags;
3014
1346#if EV_USE_REALTIME 3015#if EV_USE_REALTIME
1347 if (!have_realtime) 3016 if (!have_realtime)
1348 { 3017 {
1349 struct timespec ts; 3018 struct timespec ts;
1350 3019
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 3030 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 3031 have_monotonic = 1;
1363 } 3032 }
1364#endif 3033#endif
1365 3034
1366 ev_rt_now = ev_time ();
1367 mn_now = get_clock ();
1368 now_floor = mn_now;
1369 rtmn_diff = ev_rt_now - mn_now;
1370
1371 io_blocktime = 0.;
1372 timeout_blocktime = 0.;
1373 backend = 0;
1374 backend_fd = -1;
1375 gotasync = 0;
1376#if EV_USE_INOTIFY
1377 fs_fd = -2;
1378#endif
1379
1380 /* pid check not overridable via env */ 3035 /* pid check not overridable via env */
1381#ifndef _WIN32 3036#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 3037 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 3038 curpid = getpid ();
1384#endif 3039#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 3041 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 3042 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 3043 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 3044 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 3045
1391 if (!(flags & 0x0000ffffU)) 3046 ev_rt_now = ev_time ();
3047 mn_now = get_clock ();
3048 now_floor = mn_now;
3049 rtmn_diff = ev_rt_now - mn_now;
3050#if EV_FEATURE_API
3051 invoke_cb = ev_invoke_pending;
3052#endif
3053
3054 io_blocktime = 0.;
3055 timeout_blocktime = 0.;
3056 backend = 0;
3057 backend_fd = -1;
3058 sig_pending = 0;
3059#if EV_ASYNC_ENABLE
3060 async_pending = 0;
3061#endif
3062 pipe_write_skipped = 0;
3063 pipe_write_wanted = 0;
3064 evpipe [0] = -1;
3065 evpipe [1] = -1;
3066#if EV_USE_INOTIFY
3067 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
3068#endif
3069#if EV_USE_SIGNALFD
3070 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
3071#endif
3072
3073 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 3074 flags |= ev_recommended_backends ();
1393 3075
3076#if EV_USE_IOCP
3077 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3078#endif
1394#if EV_USE_PORT 3079#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 3081#endif
1397#if EV_USE_KQUEUE 3082#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3084#endif
3085#if EV_USE_IOURING
3086 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3087#endif
3088#if EV_USE_LINUXAIO
3089 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1399#endif 3090#endif
1400#if EV_USE_EPOLL 3091#if EV_USE_EPOLL
1401 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3092 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1402#endif 3093#endif
1403#if EV_USE_POLL 3094#if EV_USE_POLL
1404 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1405#endif 3096#endif
1406#if EV_USE_SELECT 3097#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1408#endif 3099#endif
1409 3100
3101 ev_prepare_init (&pending_w, pendingcb);
3102
3103#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 3104 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 3105 ev_set_priority (&pipe_w, EV_MAXPRI);
3106#endif
1412 } 3107 }
1413} 3108}
1414 3109
1415static void noinline 3110/* free up a loop structure */
3111ecb_cold
3112void
1416loop_destroy (EV_P) 3113ev_loop_destroy (EV_P)
1417{ 3114{
1418 int i; 3115 int i;
1419 3116
3117#if EV_MULTIPLICITY
3118 /* mimic free (0) */
3119 if (!EV_A)
3120 return;
3121#endif
3122
3123#if EV_CLEANUP_ENABLE
3124 /* queue cleanup watchers (and execute them) */
3125 if (ecb_expect_false (cleanupcnt))
3126 {
3127 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3128 EV_INVOKE_PENDING;
3129 }
3130#endif
3131
3132#if EV_CHILD_ENABLE
3133 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3134 {
3135 ev_ref (EV_A); /* child watcher */
3136 ev_signal_stop (EV_A_ &childev);
3137 }
3138#endif
3139
1420 if (ev_is_active (&pipeev)) 3140 if (ev_is_active (&pipe_w))
1421 { 3141 {
1422 ev_ref (EV_A); /* signal watcher */ 3142 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 3143 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 3144
3145 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
3146 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
3147 }
3148
1425#if EV_USE_EVENTFD 3149#if EV_USE_SIGNALFD
1426 if (evfd >= 0) 3150 if (ev_is_active (&sigfd_w))
1427 close (evfd); 3151 close (sigfd);
1428#endif 3152#endif
1429
1430 if (evpipe [0] >= 0)
1431 {
1432 close (evpipe [0]);
1433 close (evpipe [1]);
1434 }
1435 }
1436 3153
1437#if EV_USE_INOTIFY 3154#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 3155 if (fs_fd >= 0)
1439 close (fs_fd); 3156 close (fs_fd);
1440#endif 3157#endif
1441 3158
1442 if (backend_fd >= 0) 3159 if (backend_fd >= 0)
1443 close (backend_fd); 3160 close (backend_fd);
1444 3161
3162#if EV_USE_IOCP
3163 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3164#endif
1445#if EV_USE_PORT 3165#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3166 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 3167#endif
1448#if EV_USE_KQUEUE 3168#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3169 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3170#endif
3171#if EV_USE_IOURING
3172 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3173#endif
3174#if EV_USE_LINUXAIO
3175 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1450#endif 3176#endif
1451#if EV_USE_EPOLL 3177#if EV_USE_EPOLL
1452 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3178 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1453#endif 3179#endif
1454#if EV_USE_POLL 3180#if EV_USE_POLL
1455 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3181 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1456#endif 3182#endif
1457#if EV_USE_SELECT 3183#if EV_USE_SELECT
1458 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3184 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1459#endif 3185#endif
1460 3186
1461 for (i = NUMPRI; i--; ) 3187 for (i = NUMPRI; i--; )
1462 { 3188 {
1463 array_free (pending, [i]); 3189 array_free (pending, [i]);
1464#if EV_IDLE_ENABLE 3190#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 3191 array_free (idle, [i]);
1466#endif 3192#endif
1467 } 3193 }
1468 3194
1469 ev_free (anfds); anfdmax = 0; 3195 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 3196
1471 /* have to use the microsoft-never-gets-it-right macro */ 3197 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 3198 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 3199 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 3200 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 3202 array_free (periodic, EMPTY);
1477#endif 3203#endif
1478#if EV_FORK_ENABLE 3204#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 3205 array_free (fork, EMPTY);
1480#endif 3206#endif
3207#if EV_CLEANUP_ENABLE
3208 array_free (cleanup, EMPTY);
3209#endif
1481 array_free (prepare, EMPTY); 3210 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 3211 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 3212#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 3213 array_free (async, EMPTY);
1485#endif 3214#endif
1486 3215
1487 backend = 0; 3216 backend = 0;
3217
3218#if EV_MULTIPLICITY
3219 if (ev_is_default_loop (EV_A))
3220#endif
3221 ev_default_loop_ptr = 0;
3222#if EV_MULTIPLICITY
3223 else
3224 ev_free (EV_A);
3225#endif
1488} 3226}
1489 3227
1490#if EV_USE_INOTIFY 3228#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 3229inline_size void infy_fork (EV_P);
1492#endif 3230#endif
1493 3231
1494inline_size void 3232inline_size void
1495loop_fork (EV_P) 3233loop_fork (EV_P)
1496{ 3234{
1497#if EV_USE_PORT 3235#if EV_USE_PORT
1498 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3236 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1499#endif 3237#endif
1500#if EV_USE_KQUEUE 3238#if EV_USE_KQUEUE
1501 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3239 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3240#endif
3241#if EV_USE_IOURING
3242 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3243#endif
3244#if EV_USE_LINUXAIO
3245 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1502#endif 3246#endif
1503#if EV_USE_EPOLL 3247#if EV_USE_EPOLL
1504 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3248 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1505#endif 3249#endif
1506#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 3251 infy_fork (EV_A);
1508#endif 3252#endif
1509 3253
1510 if (ev_is_active (&pipeev)) 3254#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
3255 if (ev_is_active (&pipe_w) && postfork != 2)
1511 { 3256 {
1512 /* this "locks" the handlers against writing to the pipe */ 3257 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1513 /* while we modify the fd vars */
1514 gotsig = 1;
1515#if EV_ASYNC_ENABLE
1516 gotasync = 1;
1517#endif
1518 3258
1519 ev_ref (EV_A); 3259 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 3260 ev_io_stop (EV_A_ &pipe_w);
1521
1522#if EV_USE_EVENTFD
1523 if (evfd >= 0)
1524 close (evfd);
1525#endif
1526 3261
1527 if (evpipe [0] >= 0) 3262 if (evpipe [0] >= 0)
1528 { 3263 EV_WIN32_CLOSE_FD (evpipe [0]);
1529 close (evpipe [0]);
1530 close (evpipe [1]);
1531 }
1532 3264
1533 evpipe_init (EV_A); 3265 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 3266 /* iterate over everything, in case we missed something before */
1535 pipecb (EV_A_ &pipeev, EV_READ); 3267 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1536 } 3268 }
3269#endif
1537 3270
1538 postfork = 0; 3271 postfork = 0;
1539} 3272}
1540 3273
1541#if EV_MULTIPLICITY 3274#if EV_MULTIPLICITY
1542 3275
3276ecb_cold
1543struct ev_loop * 3277struct ev_loop *
1544ev_loop_new (unsigned int flags) 3278ev_loop_new (unsigned int flags) EV_NOEXCEPT
1545{ 3279{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3280 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 3281
1548 memset (loop, 0, sizeof (struct ev_loop)); 3282 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 3283 loop_init (EV_A_ flags);
1551 3284
1552 if (ev_backend (EV_A)) 3285 if (ev_backend (EV_A))
1553 return loop; 3286 return EV_A;
1554 3287
3288 ev_free (EV_A);
1555 return 0; 3289 return 0;
1556} 3290}
1557 3291
1558void 3292#endif /* multiplicity */
1559ev_loop_destroy (EV_P)
1560{
1561 loop_destroy (EV_A);
1562 ev_free (loop);
1563}
1564
1565void
1566ev_loop_fork (EV_P)
1567{
1568 postfork = 1; /* must be in line with ev_default_fork */
1569}
1570 3293
1571#if EV_VERIFY 3294#if EV_VERIFY
1572static void noinline 3295ecb_noinline ecb_cold
3296static void
1573verify_watcher (EV_P_ W w) 3297verify_watcher (EV_P_ W w)
1574{ 3298{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3299 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 3300
1577 if (w->pending) 3301 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3302 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 3303}
1580 3304
1581static void noinline 3305ecb_noinline ecb_cold
3306static void
1582verify_heap (EV_P_ ANHE *heap, int N) 3307verify_heap (EV_P_ ANHE *heap, int N)
1583{ 3308{
1584 int i; 3309 int i;
1585 3310
1586 for (i = HEAP0; i < N + HEAP0; ++i) 3311 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 3316
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3317 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 3318 }
1594} 3319}
1595 3320
1596static void noinline 3321ecb_noinline ecb_cold
3322static void
1597array_verify (EV_P_ W *ws, int cnt) 3323array_verify (EV_P_ W *ws, int cnt)
1598{ 3324{
1599 while (cnt--) 3325 while (cnt--)
1600 { 3326 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3327 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 3328 verify_watcher (EV_A_ ws [cnt]);
1603 } 3329 }
1604} 3330}
1605#endif 3331#endif
1606 3332
1607void 3333#if EV_FEATURE_API
1608ev_loop_verify (EV_P) 3334void ecb_cold
3335ev_verify (EV_P) EV_NOEXCEPT
1609{ 3336{
1610#if EV_VERIFY 3337#if EV_VERIFY
1611 int i; 3338 int i;
1612 WL w; 3339 WL w, w2;
1613 3340
1614 assert (activecnt >= -1); 3341 assert (activecnt >= -1);
1615 3342
1616 assert (fdchangemax >= fdchangecnt); 3343 assert (fdchangemax >= fdchangecnt);
1617 for (i = 0; i < fdchangecnt; ++i) 3344 for (i = 0; i < fdchangecnt; ++i)
1618 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3345 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1619 3346
1620 assert (anfdmax >= 0); 3347 assert (anfdmax >= 0);
1621 for (i = 0; i < anfdmax; ++i) 3348 for (i = 0; i < anfdmax; ++i)
3349 {
3350 int j = 0;
3351
1622 for (w = anfds [i].head; w; w = w->next) 3352 for (w = w2 = anfds [i].head; w; w = w->next)
1623 { 3353 {
1624 verify_watcher (EV_A_ (W)w); 3354 verify_watcher (EV_A_ (W)w);
3355
3356 if (j++ & 1)
3357 {
3358 assert (("libev: io watcher list contains a loop", w != w2));
3359 w2 = w2->next;
3360 }
3361
1625 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3362 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1626 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3363 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1627 } 3364 }
3365 }
1628 3366
1629 assert (timermax >= timercnt); 3367 assert (timermax >= timercnt);
1630 verify_heap (EV_A_ timers, timercnt); 3368 verify_heap (EV_A_ timers, timercnt);
1631 3369
1632#if EV_PERIODIC_ENABLE 3370#if EV_PERIODIC_ENABLE
… …
1647#if EV_FORK_ENABLE 3385#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 3386 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 3387 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 3388#endif
1651 3389
3390#if EV_CLEANUP_ENABLE
3391 assert (cleanupmax >= cleanupcnt);
3392 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3393#endif
3394
1652#if EV_ASYNC_ENABLE 3395#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 3396 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 3397 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 3398#endif
1656 3399
3400#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 3401 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 3402 array_verify (EV_A_ (W *)prepares, preparecnt);
3403#endif
1659 3404
3405#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 3406 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 3407 array_verify (EV_A_ (W *)checks, checkcnt);
3408#endif
1662 3409
1663# if 0 3410# if 0
3411#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3412 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1665 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 3413 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3414#endif
1666# endif 3415# endif
1667#endif 3416#endif
1668} 3417}
1669 3418#endif
1670#endif /* multiplicity */
1671 3419
1672#if EV_MULTIPLICITY 3420#if EV_MULTIPLICITY
3421ecb_cold
1673struct ev_loop * 3422struct ev_loop *
1674ev_default_loop_init (unsigned int flags)
1675#else 3423#else
1676int 3424int
3425#endif
1677ev_default_loop (unsigned int flags) 3426ev_default_loop (unsigned int flags) EV_NOEXCEPT
1678#endif
1679{ 3427{
1680 if (!ev_default_loop_ptr) 3428 if (!ev_default_loop_ptr)
1681 { 3429 {
1682#if EV_MULTIPLICITY 3430#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 3431 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 3432#else
1685 ev_default_loop_ptr = 1; 3433 ev_default_loop_ptr = 1;
1686#endif 3434#endif
1687 3435
1688 loop_init (EV_A_ flags); 3436 loop_init (EV_A_ flags);
1689 3437
1690 if (ev_backend (EV_A)) 3438 if (ev_backend (EV_A))
1691 { 3439 {
1692#ifndef _WIN32 3440#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 3441 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 3442 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 3443 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3444 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 3445#endif
… …
1702 3450
1703 return ev_default_loop_ptr; 3451 return ev_default_loop_ptr;
1704} 3452}
1705 3453
1706void 3454void
1707ev_default_destroy (void) 3455ev_loop_fork (EV_P) EV_NOEXCEPT
1708{ 3456{
1709#if EV_MULTIPLICITY 3457 postfork = 1;
1710 struct ev_loop *loop = ev_default_loop_ptr;
1711#endif
1712
1713 ev_default_loop_ptr = 0;
1714
1715#ifndef _WIN32
1716 ev_ref (EV_A); /* child watcher */
1717 ev_signal_stop (EV_A_ &childev);
1718#endif
1719
1720 loop_destroy (EV_A);
1721}
1722
1723void
1724ev_default_fork (void)
1725{
1726#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr;
1728#endif
1729
1730 postfork = 1; /* must be in line with ev_loop_fork */
1731} 3458}
1732 3459
1733/*****************************************************************************/ 3460/*****************************************************************************/
1734 3461
1735void 3462void
1736ev_invoke (EV_P_ void *w, int revents) 3463ev_invoke (EV_P_ void *w, int revents)
1737{ 3464{
1738 EV_CB_INVOKE ((W)w, revents); 3465 EV_CB_INVOKE ((W)w, revents);
1739} 3466}
1740 3467
1741inline_speed void 3468unsigned int
1742call_pending (EV_P) 3469ev_pending_count (EV_P) EV_NOEXCEPT
1743{ 3470{
1744 int pri; 3471 int pri;
3472 unsigned int count = 0;
1745 3473
1746 for (pri = NUMPRI; pri--; ) 3474 for (pri = NUMPRI; pri--; )
3475 count += pendingcnt [pri];
3476
3477 return count;
3478}
3479
3480ecb_noinline
3481void
3482ev_invoke_pending (EV_P)
3483{
3484 pendingpri = NUMPRI;
3485
3486 do
3487 {
3488 --pendingpri;
3489
3490 /* pendingpri possibly gets modified in the inner loop */
1747 while (pendingcnt [pri]) 3491 while (pendingcnt [pendingpri])
1748 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750
1751 if (expect_true (p->w))
1752 { 3492 {
1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ 3493 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1754 3494
1755 p->w->pending = 0; 3495 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 3496 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
1758 } 3498 }
1759 } 3499 }
3500 while (pendingpri);
1760} 3501}
1761 3502
1762#if EV_IDLE_ENABLE 3503#if EV_IDLE_ENABLE
3504/* make idle watchers pending. this handles the "call-idle */
3505/* only when higher priorities are idle" logic */
1763inline_size void 3506inline_size void
1764idle_reify (EV_P) 3507idle_reify (EV_P)
1765{ 3508{
1766 if (expect_false (idleall)) 3509 if (ecb_expect_false (idleall))
1767 { 3510 {
1768 int pri; 3511 int pri;
1769 3512
1770 for (pri = NUMPRI; pri--; ) 3513 for (pri = NUMPRI; pri--; )
1771 { 3514 {
… …
1780 } 3523 }
1781 } 3524 }
1782} 3525}
1783#endif 3526#endif
1784 3527
3528/* make timers pending */
1785inline_size void 3529inline_size void
1786timers_reify (EV_P) 3530timers_reify (EV_P)
1787{ 3531{
1788 EV_FREQUENT_CHECK; 3532 EV_FREQUENT_CHECK;
1789 3533
… …
1813 EV_FREQUENT_CHECK; 3557 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 3558 feed_reverse (EV_A_ (W)w);
1815 } 3559 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3560 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 3561
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 3562 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 3563 }
1820} 3564}
1821 3565
1822#if EV_PERIODIC_ENABLE 3566#if EV_PERIODIC_ENABLE
3567
3568ecb_noinline
3569static void
3570periodic_recalc (EV_P_ ev_periodic *w)
3571{
3572 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3573 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3574
3575 /* the above almost always errs on the low side */
3576 while (at <= ev_rt_now)
3577 {
3578 ev_tstamp nat = at + w->interval;
3579
3580 /* when resolution fails us, we use ev_rt_now */
3581 if (ecb_expect_false (nat == at))
3582 {
3583 at = ev_rt_now;
3584 break;
3585 }
3586
3587 at = nat;
3588 }
3589
3590 ev_at (w) = at;
3591}
3592
3593/* make periodics pending */
1823inline_size void 3594inline_size void
1824periodics_reify (EV_P) 3595periodics_reify (EV_P)
1825{ 3596{
1826 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
1827 3598
1828 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3599 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1829 { 3600 {
1830 int feed_count = 0;
1831
1832 do 3601 do
1833 { 3602 {
1834 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3603 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1835 3604
1836 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3605 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1845 ANHE_at_cache (periodics [HEAP0]); 3614 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 3615 downheap (periodics, periodiccnt, HEAP0);
1847 } 3616 }
1848 else if (w->interval) 3617 else if (w->interval)
1849 { 3618 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3619 periodic_recalc (EV_A_ w);
1851 /* if next trigger time is not sufficiently in the future, put it there */
1852 /* this might happen because of floating point inexactness */
1853 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1854 {
1855 ev_at (w) += w->interval;
1856
1857 /* if interval is unreasonably low we might still have a time in the past */
1858 /* so correct this. this will make the periodic very inexact, but the user */
1859 /* has effectively asked to get triggered more often than possible */
1860 if (ev_at (w) < ev_rt_now)
1861 ev_at (w) = ev_rt_now;
1862 }
1863
1864 ANHE_at_cache (periodics [HEAP0]); 3620 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 3621 downheap (periodics, periodiccnt, HEAP0);
1866 } 3622 }
1867 else 3623 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3624 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 3630
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 3631 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 3632 }
1877} 3633}
1878 3634
1879static void noinline 3635/* simply recalculate all periodics */
3636/* TODO: maybe ensure that at least one event happens when jumping forward? */
3637ecb_noinline ecb_cold
3638static void
1880periodics_reschedule (EV_P) 3639periodics_reschedule (EV_P)
1881{ 3640{
1882 int i; 3641 int i;
1883 3642
1884 /* adjust periodics after time jump */ 3643 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3646 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 3647
1889 if (w->reschedule_cb) 3648 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3649 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 3650 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3651 periodic_recalc (EV_A_ w);
1893 3652
1894 ANHE_at_cache (periodics [i]); 3653 ANHE_at_cache (periodics [i]);
1895 } 3654 }
1896 3655
1897 reheap (periodics, periodiccnt); 3656 reheap (periodics, periodiccnt);
1898} 3657}
1899#endif 3658#endif
1900 3659
1901static void noinline 3660/* adjust all timers by a given offset */
3661ecb_noinline ecb_cold
3662static void
1902timers_reschedule (EV_P_ ev_tstamp adjust) 3663timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 3664{
1904 int i; 3665 int i;
1905 3666
1906 for (i = 0; i < timercnt; ++i) 3667 for (i = 0; i < timercnt; ++i)
… …
1909 ANHE_w (*he)->at += adjust; 3670 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 3671 ANHE_at_cache (*he);
1911 } 3672 }
1912} 3673}
1913 3674
3675/* fetch new monotonic and realtime times from the kernel */
3676/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 3677inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 3678time_update (EV_P_ ev_tstamp max_block)
1916{ 3679{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 3680#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 3681 if (ecb_expect_true (have_monotonic))
1921 { 3682 {
3683 int i;
1922 ev_tstamp odiff = rtmn_diff; 3684 ev_tstamp odiff = rtmn_diff;
1923 3685
1924 mn_now = get_clock (); 3686 mn_now = get_clock ();
1925 3687
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1927 /* interpolate in the meantime */ 3689 /* interpolate in the meantime */
1928 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3690 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1929 { 3691 {
1930 ev_rt_now = rtmn_diff + mn_now; 3692 ev_rt_now = rtmn_diff + mn_now;
1931 return; 3693 return;
1932 } 3694 }
1933 3695
… …
1942 * doesn't hurt either as we only do this on time-jumps or 3704 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 3705 * in the unlikely event of having been preempted here.
1944 */ 3706 */
1945 for (i = 4; --i; ) 3707 for (i = 4; --i; )
1946 { 3708 {
3709 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 3710 rtmn_diff = ev_rt_now - mn_now;
1948 3711
3712 diff = odiff - rtmn_diff;
3713
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3714 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 3715 return; /* all is well */
1951 3716
1952 ev_rt_now = ev_time (); 3717 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 3718 mn_now = get_clock ();
1954 now_floor = mn_now; 3719 now_floor = mn_now;
… …
1963 else 3728 else
1964#endif 3729#endif
1965 { 3730 {
1966 ev_rt_now = ev_time (); 3731 ev_rt_now = ev_time ();
1967 3732
1968 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3733 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1969 { 3734 {
1970 /* adjust timers. this is easy, as the offset is the same for all of them */ 3735 /* adjust timers. this is easy, as the offset is the same for all of them */
1971 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3736 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1972#if EV_PERIODIC_ENABLE 3737#if EV_PERIODIC_ENABLE
1973 periodics_reschedule (EV_A); 3738 periodics_reschedule (EV_A);
… …
1976 3741
1977 mn_now = ev_rt_now; 3742 mn_now = ev_rt_now;
1978 } 3743 }
1979} 3744}
1980 3745
1981static int loop_done; 3746int
1982
1983void
1984ev_loop (EV_P_ int flags) 3747ev_run (EV_P_ int flags)
1985{ 3748{
3749#if EV_FEATURE_API
3750 ++loop_depth;
3751#endif
3752
3753 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3754
1986 loop_done = EVUNLOOP_CANCEL; 3755 loop_done = EVBREAK_CANCEL;
1987 3756
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3757 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 3758
1990 do 3759 do
1991 { 3760 {
1992#if EV_VERIFY >= 2 3761#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 3762 ev_verify (EV_A);
1994#endif 3763#endif
1995 3764
1996#ifndef _WIN32 3765#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 3766 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 3767 if (ecb_expect_false (getpid () != curpid))
1999 { 3768 {
2000 curpid = getpid (); 3769 curpid = getpid ();
2001 postfork = 1; 3770 postfork = 1;
2002 } 3771 }
2003#endif 3772#endif
2004 3773
2005#if EV_FORK_ENABLE 3774#if EV_FORK_ENABLE
2006 /* we might have forked, so queue fork handlers */ 3775 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 3776 if (ecb_expect_false (postfork))
2008 if (forkcnt) 3777 if (forkcnt)
2009 { 3778 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3779 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 3780 EV_INVOKE_PENDING;
2012 } 3781 }
2013#endif 3782#endif
2014 3783
3784#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 3785 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 3786 if (ecb_expect_false (preparecnt))
2017 { 3787 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3788 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 3789 EV_INVOKE_PENDING;
2020 } 3790 }
3791#endif
3792
3793 if (ecb_expect_false (loop_done))
3794 break;
2021 3795
2022 /* we might have forked, so reify kernel state if necessary */ 3796 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 3797 if (ecb_expect_false (postfork))
2024 loop_fork (EV_A); 3798 loop_fork (EV_A);
2025 3799
2026 /* update fd-related kernel structures */ 3800 /* update fd-related kernel structures */
2027 fd_reify (EV_A); 3801 fd_reify (EV_A);
2028 3802
2029 /* calculate blocking time */ 3803 /* calculate blocking time */
2030 { 3804 {
2031 ev_tstamp waittime = 0.; 3805 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 3806 ev_tstamp sleeptime = 0.;
2033 3807
3808 /* remember old timestamp for io_blocktime calculation */
3809 ev_tstamp prev_mn_now = mn_now;
3810
3811 /* update time to cancel out callback processing overhead */
3812 time_update (EV_A_ 1e100);
3813
3814 /* from now on, we want a pipe-wake-up */
3815 pipe_write_wanted = 1;
3816
3817 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3818
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3819 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 3820 {
2036 /* update time to cancel out callback processing overhead */ 3821 waittime = MAX_BLOCKTIME;
2037 time_update (EV_A_ 1e100);
2038 3822
2039 if (timercnt) 3823 if (timercnt)
2040 { 3824 {
2041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3825 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2042 if (waittime > to) waittime = to; 3826 if (waittime > to) waittime = to;
2043 } 3827 }
2044 3828
2045#if EV_PERIODIC_ENABLE 3829#if EV_PERIODIC_ENABLE
2046 if (periodiccnt) 3830 if (periodiccnt)
2047 { 3831 {
2048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3832 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2049 if (waittime > to) waittime = to; 3833 if (waittime > to) waittime = to;
2050 } 3834 }
2051#endif 3835#endif
2052 3836
3837 /* don't let timeouts decrease the waittime below timeout_blocktime */
2053 if (expect_false (waittime < timeout_blocktime)) 3838 if (ecb_expect_false (waittime < timeout_blocktime))
2054 waittime = timeout_blocktime; 3839 waittime = timeout_blocktime;
2055 3840
2056 sleeptime = waittime - backend_fudge; 3841 /* at this point, we NEED to wait, so we have to ensure */
3842 /* to pass a minimum nonzero value to the backend */
3843 if (ecb_expect_false (waittime < backend_mintime))
3844 waittime = backend_mintime;
2057 3845
3846 /* extra check because io_blocktime is commonly 0 */
2058 if (expect_true (sleeptime > io_blocktime)) 3847 if (ecb_expect_false (io_blocktime))
2059 sleeptime = io_blocktime;
2060
2061 if (sleeptime)
2062 { 3848 {
3849 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3850
3851 if (sleeptime > waittime - backend_mintime)
3852 sleeptime = waittime - backend_mintime;
3853
3854 if (ecb_expect_true (sleeptime > 0.))
3855 {
2063 ev_sleep (sleeptime); 3856 ev_sleep (sleeptime);
2064 waittime -= sleeptime; 3857 waittime -= sleeptime;
3858 }
2065 } 3859 }
2066 } 3860 }
2067 3861
3862#if EV_FEATURE_API
2068 ++loop_count; 3863 ++loop_count;
3864#endif
3865 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2069 backend_poll (EV_A_ waittime); 3866 backend_poll (EV_A_ waittime);
3867 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3868
3869 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3870
3871 ECB_MEMORY_FENCE_ACQUIRE;
3872 if (pipe_write_skipped)
3873 {
3874 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3875 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3876 }
2070 3877
2071 /* update ev_rt_now, do magic */ 3878 /* update ev_rt_now, do magic */
2072 time_update (EV_A_ waittime + sleeptime); 3879 time_update (EV_A_ waittime + sleeptime);
2073 } 3880 }
2074 3881
… …
2081#if EV_IDLE_ENABLE 3888#if EV_IDLE_ENABLE
2082 /* queue idle watchers unless other events are pending */ 3889 /* queue idle watchers unless other events are pending */
2083 idle_reify (EV_A); 3890 idle_reify (EV_A);
2084#endif 3891#endif
2085 3892
3893#if EV_CHECK_ENABLE
2086 /* queue check watchers, to be executed first */ 3894 /* queue check watchers, to be executed first */
2087 if (expect_false (checkcnt)) 3895 if (ecb_expect_false (checkcnt))
2088 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3896 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3897#endif
2089 3898
2090 call_pending (EV_A); 3899 EV_INVOKE_PENDING;
2091 } 3900 }
2092 while (expect_true ( 3901 while (ecb_expect_true (
2093 activecnt 3902 activecnt
2094 && !loop_done 3903 && !loop_done
2095 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3904 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2096 )); 3905 ));
2097 3906
2098 if (loop_done == EVUNLOOP_ONE) 3907 if (loop_done == EVBREAK_ONE)
2099 loop_done = EVUNLOOP_CANCEL; 3908 loop_done = EVBREAK_CANCEL;
2100}
2101 3909
3910#if EV_FEATURE_API
3911 --loop_depth;
3912#endif
3913
3914 return activecnt;
3915}
3916
2102void 3917void
2103ev_unloop (EV_P_ int how) 3918ev_break (EV_P_ int how) EV_NOEXCEPT
2104{ 3919{
2105 loop_done = how; 3920 loop_done = how;
2106} 3921}
2107 3922
2108void 3923void
2109ev_ref (EV_P) 3924ev_ref (EV_P) EV_NOEXCEPT
2110{ 3925{
2111 ++activecnt; 3926 ++activecnt;
2112} 3927}
2113 3928
2114void 3929void
2115ev_unref (EV_P) 3930ev_unref (EV_P) EV_NOEXCEPT
2116{ 3931{
2117 --activecnt; 3932 --activecnt;
2118} 3933}
2119 3934
2120void 3935void
2121ev_now_update (EV_P) 3936ev_now_update (EV_P) EV_NOEXCEPT
2122{ 3937{
2123 time_update (EV_A_ 1e100); 3938 time_update (EV_A_ 1e100);
2124} 3939}
2125 3940
2126void 3941void
2127ev_suspend (EV_P) 3942ev_suspend (EV_P) EV_NOEXCEPT
2128{ 3943{
2129 ev_now_update (EV_A); 3944 ev_now_update (EV_A);
2130} 3945}
2131 3946
2132void 3947void
2133ev_resume (EV_P) 3948ev_resume (EV_P) EV_NOEXCEPT
2134{ 3949{
2135 ev_tstamp mn_prev = mn_now; 3950 ev_tstamp mn_prev = mn_now;
2136 3951
2137 ev_now_update (EV_A); 3952 ev_now_update (EV_A);
2138 printf ("update %f\n", mn_now - mn_prev);//D
2139 timers_reschedule (EV_A_ mn_now - mn_prev); 3953 timers_reschedule (EV_A_ mn_now - mn_prev);
3954#if EV_PERIODIC_ENABLE
3955 /* TODO: really do this? */
2140 periodics_reschedule (EV_A); 3956 periodics_reschedule (EV_A);
3957#endif
2141} 3958}
2142 3959
2143/*****************************************************************************/ 3960/*****************************************************************************/
3961/* singly-linked list management, used when the expected list length is short */
2144 3962
2145inline_size void 3963inline_size void
2146wlist_add (WL *head, WL elem) 3964wlist_add (WL *head, WL elem)
2147{ 3965{
2148 elem->next = *head; 3966 elem->next = *head;
… …
2152inline_size void 3970inline_size void
2153wlist_del (WL *head, WL elem) 3971wlist_del (WL *head, WL elem)
2154{ 3972{
2155 while (*head) 3973 while (*head)
2156 { 3974 {
2157 if (*head == elem) 3975 if (ecb_expect_true (*head == elem))
2158 { 3976 {
2159 *head = elem->next; 3977 *head = elem->next;
2160 return; 3978 break;
2161 } 3979 }
2162 3980
2163 head = &(*head)->next; 3981 head = &(*head)->next;
2164 } 3982 }
2165} 3983}
2166 3984
3985/* internal, faster, version of ev_clear_pending */
2167inline_speed void 3986inline_speed void
2168clear_pending (EV_P_ W w) 3987clear_pending (EV_P_ W w)
2169{ 3988{
2170 if (w->pending) 3989 if (w->pending)
2171 { 3990 {
2172 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3991 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2173 w->pending = 0; 3992 w->pending = 0;
2174 } 3993 }
2175} 3994}
2176 3995
2177int 3996int
2178ev_clear_pending (EV_P_ void *w) 3997ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2179{ 3998{
2180 W w_ = (W)w; 3999 W w_ = (W)w;
2181 int pending = w_->pending; 4000 int pending = w_->pending;
2182 4001
2183 if (expect_true (pending)) 4002 if (ecb_expect_true (pending))
2184 { 4003 {
2185 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4004 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
4005 p->w = (W)&pending_w;
2186 w_->pending = 0; 4006 w_->pending = 0;
2187 p->w = 0;
2188 return p->events; 4007 return p->events;
2189 } 4008 }
2190 else 4009 else
2191 return 0; 4010 return 0;
2192} 4011}
2193 4012
2194inline_size void 4013inline_size void
2195pri_adjust (EV_P_ W w) 4014pri_adjust (EV_P_ W w)
2196{ 4015{
2197 int pri = w->priority; 4016 int pri = ev_priority (w);
2198 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 4017 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2199 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 4018 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2200 w->priority = pri; 4019 ev_set_priority (w, pri);
2201} 4020}
2202 4021
2203inline_speed void 4022inline_speed void
2204ev_start (EV_P_ W w, int active) 4023ev_start (EV_P_ W w, int active)
2205{ 4024{
… …
2215 w->active = 0; 4034 w->active = 0;
2216} 4035}
2217 4036
2218/*****************************************************************************/ 4037/*****************************************************************************/
2219 4038
2220void noinline 4039ecb_noinline
4040void
2221ev_io_start (EV_P_ ev_io *w) 4041ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2222{ 4042{
2223 int fd = w->fd; 4043 int fd = w->fd;
2224 4044
2225 if (expect_false (ev_is_active (w))) 4045 if (ecb_expect_false (ev_is_active (w)))
2226 return; 4046 return;
2227 4047
2228 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4048 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2229 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4049 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2230 4050
4051#if EV_VERIFY >= 2
4052 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4053#endif
2231 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
2232 4055
2233 ev_start (EV_A_ (W)w, 1); 4056 ev_start (EV_A_ (W)w, 1);
2234 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4057 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2235 wlist_add (&anfds[fd].head, (WL)w); 4058 wlist_add (&anfds[fd].head, (WL)w);
2236 4059
4060 /* common bug, apparently */
4061 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
4062
2237 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 4063 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2238 w->events &= ~EV__IOFDSET; 4064 w->events &= ~EV__IOFDSET;
2239 4065
2240 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
2241} 4067}
2242 4068
2243void noinline 4069ecb_noinline
4070void
2244ev_io_stop (EV_P_ ev_io *w) 4071ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2245{ 4072{
2246 clear_pending (EV_A_ (W)w); 4073 clear_pending (EV_A_ (W)w);
2247 if (expect_false (!ev_is_active (w))) 4074 if (ecb_expect_false (!ev_is_active (w)))
2248 return; 4075 return;
2249 4076
2250 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4077 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2251 4078
4079#if EV_VERIFY >= 2
4080 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4081#endif
2252 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
2253 4083
2254 wlist_del (&anfds[w->fd].head, (WL)w); 4084 wlist_del (&anfds[w->fd].head, (WL)w);
2255 ev_stop (EV_A_ (W)w); 4085 ev_stop (EV_A_ (W)w);
2256 4086
2257 fd_change (EV_A_ w->fd, 1); 4087 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2258 4088
2259 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
2260} 4090}
2261 4091
2262void noinline 4092ecb_noinline
4093void
2263ev_timer_start (EV_P_ ev_timer *w) 4094ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2264{ 4095{
2265 if (expect_false (ev_is_active (w))) 4096 if (ecb_expect_false (ev_is_active (w)))
2266 return; 4097 return;
2267 4098
2268 ev_at (w) += mn_now; 4099 ev_at (w) += mn_now;
2269 4100
2270 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4101 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2271 4102
2272 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
2273 4104
2274 ++timercnt; 4105 ++timercnt;
2275 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2276 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4107 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2277 ANHE_w (timers [ev_active (w)]) = (WT)w; 4108 ANHE_w (timers [ev_active (w)]) = (WT)w;
2278 ANHE_at_cache (timers [ev_active (w)]); 4109 ANHE_at_cache (timers [ev_active (w)]);
2279 upheap (timers, ev_active (w)); 4110 upheap (timers, ev_active (w));
2280 4111
2281 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
2282 4113
2283 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4114 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2284} 4115}
2285 4116
2286void noinline 4117ecb_noinline
4118void
2287ev_timer_stop (EV_P_ ev_timer *w) 4119ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2288{ 4120{
2289 clear_pending (EV_A_ (W)w); 4121 clear_pending (EV_A_ (W)w);
2290 if (expect_false (!ev_is_active (w))) 4122 if (ecb_expect_false (!ev_is_active (w)))
2291 return; 4123 return;
2292 4124
2293 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
2294 4126
2295 { 4127 {
… …
2297 4129
2298 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4130 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2299 4131
2300 --timercnt; 4132 --timercnt;
2301 4133
2302 if (expect_true (active < timercnt + HEAP0)) 4134 if (ecb_expect_true (active < timercnt + HEAP0))
2303 { 4135 {
2304 timers [active] = timers [timercnt + HEAP0]; 4136 timers [active] = timers [timercnt + HEAP0];
2305 adjustheap (timers, timercnt, active); 4137 adjustheap (timers, timercnt, active);
2306 } 4138 }
2307 } 4139 }
2308 4140
2309 EV_FREQUENT_CHECK;
2310
2311 ev_at (w) -= mn_now; 4141 ev_at (w) -= mn_now;
2312 4142
2313 ev_stop (EV_A_ (W)w); 4143 ev_stop (EV_A_ (W)w);
2314}
2315 4144
2316void noinline 4145 EV_FREQUENT_CHECK;
4146}
4147
4148ecb_noinline
4149void
2317ev_timer_again (EV_P_ ev_timer *w) 4150ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2318{ 4151{
2319 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
4153
4154 clear_pending (EV_A_ (W)w);
2320 4155
2321 if (ev_is_active (w)) 4156 if (ev_is_active (w))
2322 { 4157 {
2323 if (w->repeat) 4158 if (w->repeat)
2324 { 4159 {
… …
2336 } 4171 }
2337 4172
2338 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
2339} 4174}
2340 4175
4176ev_tstamp
4177ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4178{
4179 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
4180}
4181
2341#if EV_PERIODIC_ENABLE 4182#if EV_PERIODIC_ENABLE
2342void noinline 4183ecb_noinline
4184void
2343ev_periodic_start (EV_P_ ev_periodic *w) 4185ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2344{ 4186{
2345 if (expect_false (ev_is_active (w))) 4187 if (ecb_expect_false (ev_is_active (w)))
2346 return; 4188 return;
2347 4189
2348 if (w->reschedule_cb) 4190 if (w->reschedule_cb)
2349 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2350 else if (w->interval) 4192 else if (w->interval)
2351 { 4193 {
2352 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4194 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2353 /* this formula differs from the one in periodic_reify because we do not always round up */ 4195 periodic_recalc (EV_A_ w);
2354 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2355 } 4196 }
2356 else 4197 else
2357 ev_at (w) = w->offset; 4198 ev_at (w) = w->offset;
2358 4199
2359 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
2360 4201
2361 ++periodiccnt; 4202 ++periodiccnt;
2362 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4203 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2363 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4204 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2364 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4205 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2365 ANHE_at_cache (periodics [ev_active (w)]); 4206 ANHE_at_cache (periodics [ev_active (w)]);
2366 upheap (periodics, ev_active (w)); 4207 upheap (periodics, ev_active (w));
2367 4208
2368 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
2369 4210
2370 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4211 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2371} 4212}
2372 4213
2373void noinline 4214ecb_noinline
4215void
2374ev_periodic_stop (EV_P_ ev_periodic *w) 4216ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2375{ 4217{
2376 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
2377 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
2378 return; 4220 return;
2379 4221
2380 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
2381 4223
2382 { 4224 {
… …
2384 4226
2385 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4227 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2386 4228
2387 --periodiccnt; 4229 --periodiccnt;
2388 4230
2389 if (expect_true (active < periodiccnt + HEAP0)) 4231 if (ecb_expect_true (active < periodiccnt + HEAP0))
2390 { 4232 {
2391 periodics [active] = periodics [periodiccnt + HEAP0]; 4233 periodics [active] = periodics [periodiccnt + HEAP0];
2392 adjustheap (periodics, periodiccnt, active); 4234 adjustheap (periodics, periodiccnt, active);
2393 } 4235 }
2394 } 4236 }
2395 4237
2396 EV_FREQUENT_CHECK;
2397
2398 ev_stop (EV_A_ (W)w); 4238 ev_stop (EV_A_ (W)w);
2399}
2400 4239
2401void noinline 4240 EV_FREQUENT_CHECK;
4241}
4242
4243ecb_noinline
4244void
2402ev_periodic_again (EV_P_ ev_periodic *w) 4245ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2403{ 4246{
2404 /* TODO: use adjustheap and recalculation */ 4247 /* TODO: use adjustheap and recalculation */
2405 ev_periodic_stop (EV_A_ w); 4248 ev_periodic_stop (EV_A_ w);
2406 ev_periodic_start (EV_A_ w); 4249 ev_periodic_start (EV_A_ w);
2407} 4250}
… …
2409 4252
2410#ifndef SA_RESTART 4253#ifndef SA_RESTART
2411# define SA_RESTART 0 4254# define SA_RESTART 0
2412#endif 4255#endif
2413 4256
2414void noinline 4257#if EV_SIGNAL_ENABLE
4258
4259ecb_noinline
4260void
2415ev_signal_start (EV_P_ ev_signal *w) 4261ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2416{ 4262{
4263 if (ecb_expect_false (ev_is_active (w)))
4264 return;
4265
4266 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4267
2417#if EV_MULTIPLICITY 4268#if EV_MULTIPLICITY
2418 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4269 assert (("libev: a signal must not be attached to two different loops",
2419#endif 4270 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2420 if (expect_false (ev_is_active (w)))
2421 return;
2422 4271
2423 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 4272 signals [w->signum - 1].loop = EV_A;
4273 ECB_MEMORY_FENCE_RELEASE;
4274#endif
2424 4275
2425 evpipe_init (EV_A);
2426
2427 EV_FREQUENT_CHECK; 4276 EV_FREQUENT_CHECK;
2428 4277
4278#if EV_USE_SIGNALFD
4279 if (sigfd == -2)
2429 { 4280 {
2430#ifndef _WIN32 4281 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2431 sigset_t full, prev; 4282 if (sigfd < 0 && errno == EINVAL)
2432 sigfillset (&full); 4283 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2433 sigprocmask (SIG_SETMASK, &full, &prev);
2434#endif
2435 4284
2436 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 4285 if (sigfd >= 0)
4286 {
4287 fd_intern (sigfd); /* doing it twice will not hurt */
2437 4288
2438#ifndef _WIN32 4289 sigemptyset (&sigfd_set);
2439 sigprocmask (SIG_SETMASK, &prev, 0); 4290
2440#endif 4291 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
4292 ev_set_priority (&sigfd_w, EV_MAXPRI);
4293 ev_io_start (EV_A_ &sigfd_w);
4294 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
4295 }
2441 } 4296 }
4297
4298 if (sigfd >= 0)
4299 {
4300 /* TODO: check .head */
4301 sigaddset (&sigfd_set, w->signum);
4302 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
4303
4304 signalfd (sigfd, &sigfd_set, 0);
4305 }
4306#endif
2442 4307
2443 ev_start (EV_A_ (W)w, 1); 4308 ev_start (EV_A_ (W)w, 1);
2444 wlist_add (&signals [w->signum - 1].head, (WL)w); 4309 wlist_add (&signals [w->signum - 1].head, (WL)w);
2445 4310
2446 if (!((WL)w)->next) 4311 if (!((WL)w)->next)
4312# if EV_USE_SIGNALFD
4313 if (sigfd < 0) /*TODO*/
4314# endif
2447 { 4315 {
2448#if _WIN32 4316# ifdef _WIN32
4317 evpipe_init (EV_A);
4318
2449 signal (w->signum, ev_sighandler); 4319 signal (w->signum, ev_sighandler);
2450#else 4320# else
2451 struct sigaction sa; 4321 struct sigaction sa;
4322
4323 evpipe_init (EV_A);
4324
2452 sa.sa_handler = ev_sighandler; 4325 sa.sa_handler = ev_sighandler;
2453 sigfillset (&sa.sa_mask); 4326 sigfillset (&sa.sa_mask);
2454 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4327 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2455 sigaction (w->signum, &sa, 0); 4328 sigaction (w->signum, &sa, 0);
4329
4330 if (origflags & EVFLAG_NOSIGMASK)
4331 {
4332 sigemptyset (&sa.sa_mask);
4333 sigaddset (&sa.sa_mask, w->signum);
4334 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4335 }
2456#endif 4336#endif
2457 } 4337 }
2458 4338
2459 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
2460} 4340}
2461 4341
2462void noinline 4342ecb_noinline
4343void
2463ev_signal_stop (EV_P_ ev_signal *w) 4344ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2464{ 4345{
2465 clear_pending (EV_A_ (W)w); 4346 clear_pending (EV_A_ (W)w);
2466 if (expect_false (!ev_is_active (w))) 4347 if (ecb_expect_false (!ev_is_active (w)))
2467 return; 4348 return;
2468 4349
2469 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
2470 4351
2471 wlist_del (&signals [w->signum - 1].head, (WL)w); 4352 wlist_del (&signals [w->signum - 1].head, (WL)w);
2472 ev_stop (EV_A_ (W)w); 4353 ev_stop (EV_A_ (W)w);
2473 4354
2474 if (!signals [w->signum - 1].head) 4355 if (!signals [w->signum - 1].head)
4356 {
4357#if EV_MULTIPLICITY
4358 signals [w->signum - 1].loop = 0; /* unattach from signal */
4359#endif
4360#if EV_USE_SIGNALFD
4361 if (sigfd >= 0)
4362 {
4363 sigset_t ss;
4364
4365 sigemptyset (&ss);
4366 sigaddset (&ss, w->signum);
4367 sigdelset (&sigfd_set, w->signum);
4368
4369 signalfd (sigfd, &sigfd_set, 0);
4370 sigprocmask (SIG_UNBLOCK, &ss, 0);
4371 }
4372 else
4373#endif
2475 signal (w->signum, SIG_DFL); 4374 signal (w->signum, SIG_DFL);
4375 }
2476 4376
2477 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
2478} 4378}
2479 4379
4380#endif
4381
4382#if EV_CHILD_ENABLE
4383
2480void 4384void
2481ev_child_start (EV_P_ ev_child *w) 4385ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2482{ 4386{
2483#if EV_MULTIPLICITY 4387#if EV_MULTIPLICITY
2484 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4388 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2485#endif 4389#endif
2486 if (expect_false (ev_is_active (w))) 4390 if (ecb_expect_false (ev_is_active (w)))
2487 return; 4391 return;
2488 4392
2489 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
2490 4394
2491 ev_start (EV_A_ (W)w, 1); 4395 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4396 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2493 4397
2494 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
2495} 4399}
2496 4400
2497void 4401void
2498ev_child_stop (EV_P_ ev_child *w) 4402ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2499{ 4403{
2500 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
2501 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
2502 return; 4406 return;
2503 4407
2504 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
2505 4409
2506 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4410 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2507 ev_stop (EV_A_ (W)w); 4411 ev_stop (EV_A_ (W)w);
2508 4412
2509 EV_FREQUENT_CHECK; 4413 EV_FREQUENT_CHECK;
2510} 4414}
4415
4416#endif
2511 4417
2512#if EV_STAT_ENABLE 4418#if EV_STAT_ENABLE
2513 4419
2514# ifdef _WIN32 4420# ifdef _WIN32
2515# undef lstat 4421# undef lstat
… …
2518 4424
2519#define DEF_STAT_INTERVAL 5.0074891 4425#define DEF_STAT_INTERVAL 5.0074891
2520#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4426#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2521#define MIN_STAT_INTERVAL 0.1074891 4427#define MIN_STAT_INTERVAL 0.1074891
2522 4428
2523static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4429ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2524 4430
2525#if EV_USE_INOTIFY 4431#if EV_USE_INOTIFY
2526# define EV_INOTIFY_BUFSIZE 8192
2527 4432
2528static void noinline 4433/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4434# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4435
4436ecb_noinline
4437static void
2529infy_add (EV_P_ ev_stat *w) 4438infy_add (EV_P_ ev_stat *w)
2530{ 4439{
2531 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); 4440 w->wd = inotify_add_watch (fs_fd, w->path,
4441 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4442 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4443 | IN_DONT_FOLLOW | IN_MASK_ADD);
2532 4444
2533 if (w->wd < 0) 4445 if (w->wd >= 0)
4446 {
4447 struct statfs sfs;
4448
4449 /* now local changes will be tracked by inotify, but remote changes won't */
4450 /* unless the filesystem is known to be local, we therefore still poll */
4451 /* also do poll on <2.6.25, but with normal frequency */
4452
4453 if (!fs_2625)
4454 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4455 else if (!statfs (w->path, &sfs)
4456 && (sfs.f_type == 0x1373 /* devfs */
4457 || sfs.f_type == 0x4006 /* fat */
4458 || sfs.f_type == 0x4d44 /* msdos */
4459 || sfs.f_type == 0xEF53 /* ext2/3 */
4460 || sfs.f_type == 0x72b6 /* jffs2 */
4461 || sfs.f_type == 0x858458f6 /* ramfs */
4462 || sfs.f_type == 0x5346544e /* ntfs */
4463 || sfs.f_type == 0x3153464a /* jfs */
4464 || sfs.f_type == 0x9123683e /* btrfs */
4465 || sfs.f_type == 0x52654973 /* reiser3 */
4466 || sfs.f_type == 0x01021994 /* tmpfs */
4467 || sfs.f_type == 0x58465342 /* xfs */))
4468 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4469 else
4470 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2534 { 4471 }
4472 else
4473 {
4474 /* can't use inotify, continue to stat */
2535 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4475 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2536 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2537 4476
2538 /* monitor some parent directory for speedup hints */ 4477 /* if path is not there, monitor some parent directory for speedup hints */
2539 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4478 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2540 /* but an efficiency issue only */ 4479 /* but an efficiency issue only */
2541 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4480 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2542 { 4481 {
2543 char path [4096]; 4482 char path [4096];
… …
2553 if (!pend || pend == path) 4492 if (!pend || pend == path)
2554 break; 4493 break;
2555 4494
2556 *pend = 0; 4495 *pend = 0;
2557 w->wd = inotify_add_watch (fs_fd, path, mask); 4496 w->wd = inotify_add_watch (fs_fd, path, mask);
2558 } 4497 }
2559 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4498 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2560 } 4499 }
2561 } 4500 }
2562 4501
2563 if (w->wd >= 0) 4502 if (w->wd >= 0)
2564 {
2565 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4503 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2566 4504
2567 /* now local changes will be tracked by inotify, but remote changes won't */ 4505 /* now re-arm timer, if required */
2568 /* unless the filesystem it known to be local, we therefore still poll */ 4506 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2569 /* also do poll on <2.6.25, but with normal frequency */
2570 struct statfs sfs;
2571
2572 if (fs_2625 && !statfs (w->path, &sfs))
2573 if (sfs.f_type == 0x1373 /* devfs */
2574 || sfs.f_type == 0xEF53 /* ext2/3 */
2575 || sfs.f_type == 0x3153464a /* jfs */
2576 || sfs.f_type == 0x52654973 /* reiser3 */
2577 || sfs.f_type == 0x01021994 /* tempfs */
2578 || sfs.f_type == 0x58465342 /* xfs */)
2579 return;
2580
2581 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2582 ev_timer_again (EV_A_ &w->timer); 4507 ev_timer_again (EV_A_ &w->timer);
2583 } 4508 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2584} 4509}
2585 4510
2586static void noinline 4511ecb_noinline
4512static void
2587infy_del (EV_P_ ev_stat *w) 4513infy_del (EV_P_ ev_stat *w)
2588{ 4514{
2589 int slot; 4515 int slot;
2590 int wd = w->wd; 4516 int wd = w->wd;
2591 4517
2592 if (wd < 0) 4518 if (wd < 0)
2593 return; 4519 return;
2594 4520
2595 w->wd = -2; 4521 w->wd = -2;
2596 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4522 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2597 wlist_del (&fs_hash [slot].head, (WL)w); 4523 wlist_del (&fs_hash [slot].head, (WL)w);
2598 4524
2599 /* remove this watcher, if others are watching it, they will rearm */ 4525 /* remove this watcher, if others are watching it, they will rearm */
2600 inotify_rm_watch (fs_fd, wd); 4526 inotify_rm_watch (fs_fd, wd);
2601} 4527}
2602 4528
2603static void noinline 4529ecb_noinline
4530static void
2604infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4531infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2605{ 4532{
2606 if (slot < 0) 4533 if (slot < 0)
2607 /* overflow, need to check for all hash slots */ 4534 /* overflow, need to check for all hash slots */
2608 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4535 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2609 infy_wd (EV_A_ slot, wd, ev); 4536 infy_wd (EV_A_ slot, wd, ev);
2610 else 4537 else
2611 { 4538 {
2612 WL w_; 4539 WL w_;
2613 4540
2614 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4541 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2615 { 4542 {
2616 ev_stat *w = (ev_stat *)w_; 4543 ev_stat *w = (ev_stat *)w_;
2617 w_ = w_->next; /* lets us remove this watcher and all before it */ 4544 w_ = w_->next; /* lets us remove this watcher and all before it */
2618 4545
2619 if (w->wd == wd || wd == -1) 4546 if (w->wd == wd || wd == -1)
2620 { 4547 {
2621 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4548 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2622 { 4549 {
2623 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4550 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2624 w->wd = -1; 4551 w->wd = -1;
2625 infy_add (EV_A_ w); /* re-add, no matter what */ 4552 infy_add (EV_A_ w); /* re-add, no matter what */
2626 } 4553 }
2627 4554
2628 stat_timer_cb (EV_A_ &w->timer, 0); 4555 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2633 4560
2634static void 4561static void
2635infy_cb (EV_P_ ev_io *w, int revents) 4562infy_cb (EV_P_ ev_io *w, int revents)
2636{ 4563{
2637 char buf [EV_INOTIFY_BUFSIZE]; 4564 char buf [EV_INOTIFY_BUFSIZE];
2638 struct inotify_event *ev = (struct inotify_event *)buf;
2639 int ofs; 4565 int ofs;
2640 int len = read (fs_fd, buf, sizeof (buf)); 4566 int len = read (fs_fd, buf, sizeof (buf));
2641 4567
2642 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4568 for (ofs = 0; ofs < len; )
4569 {
4570 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2643 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4571 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4572 ofs += sizeof (struct inotify_event) + ev->len;
4573 }
2644} 4574}
2645 4575
2646inline_size void 4576inline_size ecb_cold
4577void
2647check_2625 (EV_P) 4578ev_check_2625 (EV_P)
2648{ 4579{
2649 /* kernels < 2.6.25 are borked 4580 /* kernels < 2.6.25 are borked
2650 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4581 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2651 */ 4582 */
2652 struct utsname buf; 4583 if (ev_linux_version () < 0x020619)
2653 int major, minor, micro;
2654
2655 if (uname (&buf))
2656 return; 4584 return;
2657 4585
2658 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2659 return;
2660
2661 if (major < 2
2662 || (major == 2 && minor < 6)
2663 || (major == 2 && minor == 6 && micro < 25))
2664 return;
2665
2666 fs_2625 = 1; 4586 fs_2625 = 1;
4587}
4588
4589inline_size int
4590infy_newfd (void)
4591{
4592#if defined IN_CLOEXEC && defined IN_NONBLOCK
4593 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4594 if (fd >= 0)
4595 return fd;
4596#endif
4597 return inotify_init ();
2667} 4598}
2668 4599
2669inline_size void 4600inline_size void
2670infy_init (EV_P) 4601infy_init (EV_P)
2671{ 4602{
2672 if (fs_fd != -2) 4603 if (fs_fd != -2)
2673 return; 4604 return;
2674 4605
2675 fs_fd = -1; 4606 fs_fd = -1;
2676 4607
2677 check_2625 (EV_A); 4608 ev_check_2625 (EV_A);
2678 4609
2679 fs_fd = inotify_init (); 4610 fs_fd = infy_newfd ();
2680 4611
2681 if (fs_fd >= 0) 4612 if (fs_fd >= 0)
2682 { 4613 {
4614 fd_intern (fs_fd);
2683 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4615 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2684 ev_set_priority (&fs_w, EV_MAXPRI); 4616 ev_set_priority (&fs_w, EV_MAXPRI);
2685 ev_io_start (EV_A_ &fs_w); 4617 ev_io_start (EV_A_ &fs_w);
4618 ev_unref (EV_A);
2686 } 4619 }
2687} 4620}
2688 4621
2689inline_size void 4622inline_size void
2690infy_fork (EV_P) 4623infy_fork (EV_P)
… …
2692 int slot; 4625 int slot;
2693 4626
2694 if (fs_fd < 0) 4627 if (fs_fd < 0)
2695 return; 4628 return;
2696 4629
4630 ev_ref (EV_A);
4631 ev_io_stop (EV_A_ &fs_w);
2697 close (fs_fd); 4632 close (fs_fd);
2698 fs_fd = inotify_init (); 4633 fs_fd = infy_newfd ();
2699 4634
4635 if (fs_fd >= 0)
4636 {
4637 fd_intern (fs_fd);
4638 ev_io_set (&fs_w, fs_fd, EV_READ);
4639 ev_io_start (EV_A_ &fs_w);
4640 ev_unref (EV_A);
4641 }
4642
2700 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4643 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2701 { 4644 {
2702 WL w_ = fs_hash [slot].head; 4645 WL w_ = fs_hash [slot].head;
2703 fs_hash [slot].head = 0; 4646 fs_hash [slot].head = 0;
2704 4647
2705 while (w_) 4648 while (w_)
… …
2710 w->wd = -1; 4653 w->wd = -1;
2711 4654
2712 if (fs_fd >= 0) 4655 if (fs_fd >= 0)
2713 infy_add (EV_A_ w); /* re-add, no matter what */ 4656 infy_add (EV_A_ w); /* re-add, no matter what */
2714 else 4657 else
4658 {
4659 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4660 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2715 ev_timer_again (EV_A_ &w->timer); 4661 ev_timer_again (EV_A_ &w->timer);
4662 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4663 }
2716 } 4664 }
2717 } 4665 }
2718} 4666}
2719 4667
2720#endif 4668#endif
… …
2724#else 4672#else
2725# define EV_LSTAT(p,b) lstat (p, b) 4673# define EV_LSTAT(p,b) lstat (p, b)
2726#endif 4674#endif
2727 4675
2728void 4676void
2729ev_stat_stat (EV_P_ ev_stat *w) 4677ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
2730{ 4678{
2731 if (lstat (w->path, &w->attr) < 0) 4679 if (lstat (w->path, &w->attr) < 0)
2732 w->attr.st_nlink = 0; 4680 w->attr.st_nlink = 0;
2733 else if (!w->attr.st_nlink) 4681 else if (!w->attr.st_nlink)
2734 w->attr.st_nlink = 1; 4682 w->attr.st_nlink = 1;
2735} 4683}
2736 4684
2737static void noinline 4685ecb_noinline
4686static void
2738stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4687stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2739{ 4688{
2740 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4689 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2741 4690
2742 /* we copy this here each the time so that */ 4691 ev_statdata prev = w->attr;
2743 /* prev has the old value when the callback gets invoked */
2744 w->prev = w->attr;
2745 ev_stat_stat (EV_A_ w); 4692 ev_stat_stat (EV_A_ w);
2746 4693
2747 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4694 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2748 if ( 4695 if (
2749 w->prev.st_dev != w->attr.st_dev 4696 prev.st_dev != w->attr.st_dev
2750 || w->prev.st_ino != w->attr.st_ino 4697 || prev.st_ino != w->attr.st_ino
2751 || w->prev.st_mode != w->attr.st_mode 4698 || prev.st_mode != w->attr.st_mode
2752 || w->prev.st_nlink != w->attr.st_nlink 4699 || prev.st_nlink != w->attr.st_nlink
2753 || w->prev.st_uid != w->attr.st_uid 4700 || prev.st_uid != w->attr.st_uid
2754 || w->prev.st_gid != w->attr.st_gid 4701 || prev.st_gid != w->attr.st_gid
2755 || w->prev.st_rdev != w->attr.st_rdev 4702 || prev.st_rdev != w->attr.st_rdev
2756 || w->prev.st_size != w->attr.st_size 4703 || prev.st_size != w->attr.st_size
2757 || w->prev.st_atime != w->attr.st_atime 4704 || prev.st_atime != w->attr.st_atime
2758 || w->prev.st_mtime != w->attr.st_mtime 4705 || prev.st_mtime != w->attr.st_mtime
2759 || w->prev.st_ctime != w->attr.st_ctime 4706 || prev.st_ctime != w->attr.st_ctime
2760 ) { 4707 ) {
4708 /* we only update w->prev on actual differences */
4709 /* in case we test more often than invoke the callback, */
4710 /* to ensure that prev is always different to attr */
4711 w->prev = prev;
4712
2761 #if EV_USE_INOTIFY 4713 #if EV_USE_INOTIFY
2762 if (fs_fd >= 0) 4714 if (fs_fd >= 0)
2763 { 4715 {
2764 infy_del (EV_A_ w); 4716 infy_del (EV_A_ w);
2765 infy_add (EV_A_ w); 4717 infy_add (EV_A_ w);
… …
2770 ev_feed_event (EV_A_ w, EV_STAT); 4722 ev_feed_event (EV_A_ w, EV_STAT);
2771 } 4723 }
2772} 4724}
2773 4725
2774void 4726void
2775ev_stat_start (EV_P_ ev_stat *w) 4727ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
2776{ 4728{
2777 if (expect_false (ev_is_active (w))) 4729 if (ecb_expect_false (ev_is_active (w)))
2778 return; 4730 return;
2779 4731
2780 ev_stat_stat (EV_A_ w); 4732 ev_stat_stat (EV_A_ w);
2781 4733
2782 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4734 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
2790 4742
2791 if (fs_fd >= 0) 4743 if (fs_fd >= 0)
2792 infy_add (EV_A_ w); 4744 infy_add (EV_A_ w);
2793 else 4745 else
2794#endif 4746#endif
4747 {
2795 ev_timer_again (EV_A_ &w->timer); 4748 ev_timer_again (EV_A_ &w->timer);
4749 ev_unref (EV_A);
4750 }
2796 4751
2797 ev_start (EV_A_ (W)w, 1); 4752 ev_start (EV_A_ (W)w, 1);
2798 4753
2799 EV_FREQUENT_CHECK; 4754 EV_FREQUENT_CHECK;
2800} 4755}
2801 4756
2802void 4757void
2803ev_stat_stop (EV_P_ ev_stat *w) 4758ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
2804{ 4759{
2805 clear_pending (EV_A_ (W)w); 4760 clear_pending (EV_A_ (W)w);
2806 if (expect_false (!ev_is_active (w))) 4761 if (ecb_expect_false (!ev_is_active (w)))
2807 return; 4762 return;
2808 4763
2809 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
2810 4765
2811#if EV_USE_INOTIFY 4766#if EV_USE_INOTIFY
2812 infy_del (EV_A_ w); 4767 infy_del (EV_A_ w);
2813#endif 4768#endif
4769
4770 if (ev_is_active (&w->timer))
4771 {
4772 ev_ref (EV_A);
2814 ev_timer_stop (EV_A_ &w->timer); 4773 ev_timer_stop (EV_A_ &w->timer);
4774 }
2815 4775
2816 ev_stop (EV_A_ (W)w); 4776 ev_stop (EV_A_ (W)w);
2817 4777
2818 EV_FREQUENT_CHECK; 4778 EV_FREQUENT_CHECK;
2819} 4779}
2820#endif 4780#endif
2821 4781
2822#if EV_IDLE_ENABLE 4782#if EV_IDLE_ENABLE
2823void 4783void
2824ev_idle_start (EV_P_ ev_idle *w) 4784ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
2825{ 4785{
2826 if (expect_false (ev_is_active (w))) 4786 if (ecb_expect_false (ev_is_active (w)))
2827 return; 4787 return;
2828 4788
2829 pri_adjust (EV_A_ (W)w); 4789 pri_adjust (EV_A_ (W)w);
2830 4790
2831 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
… …
2834 int active = ++idlecnt [ABSPRI (w)]; 4794 int active = ++idlecnt [ABSPRI (w)];
2835 4795
2836 ++idleall; 4796 ++idleall;
2837 ev_start (EV_A_ (W)w, active); 4797 ev_start (EV_A_ (W)w, active);
2838 4798
2839 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4799 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
2840 idles [ABSPRI (w)][active - 1] = w; 4800 idles [ABSPRI (w)][active - 1] = w;
2841 } 4801 }
2842 4802
2843 EV_FREQUENT_CHECK; 4803 EV_FREQUENT_CHECK;
2844} 4804}
2845 4805
2846void 4806void
2847ev_idle_stop (EV_P_ ev_idle *w) 4807ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
2848{ 4808{
2849 clear_pending (EV_A_ (W)w); 4809 clear_pending (EV_A_ (W)w);
2850 if (expect_false (!ev_is_active (w))) 4810 if (ecb_expect_false (!ev_is_active (w)))
2851 return; 4811 return;
2852 4812
2853 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
2854 4814
2855 { 4815 {
… …
2864 4824
2865 EV_FREQUENT_CHECK; 4825 EV_FREQUENT_CHECK;
2866} 4826}
2867#endif 4827#endif
2868 4828
4829#if EV_PREPARE_ENABLE
2869void 4830void
2870ev_prepare_start (EV_P_ ev_prepare *w) 4831ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
2871{ 4832{
2872 if (expect_false (ev_is_active (w))) 4833 if (ecb_expect_false (ev_is_active (w)))
2873 return; 4834 return;
2874 4835
2875 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
2876 4837
2877 ev_start (EV_A_ (W)w, ++preparecnt); 4838 ev_start (EV_A_ (W)w, ++preparecnt);
2878 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4839 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
2879 prepares [preparecnt - 1] = w; 4840 prepares [preparecnt - 1] = w;
2880 4841
2881 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
2882} 4843}
2883 4844
2884void 4845void
2885ev_prepare_stop (EV_P_ ev_prepare *w) 4846ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
2886{ 4847{
2887 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
2888 if (expect_false (!ev_is_active (w))) 4849 if (ecb_expect_false (!ev_is_active (w)))
2889 return; 4850 return;
2890 4851
2891 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
2892 4853
2893 { 4854 {
… …
2899 4860
2900 ev_stop (EV_A_ (W)w); 4861 ev_stop (EV_A_ (W)w);
2901 4862
2902 EV_FREQUENT_CHECK; 4863 EV_FREQUENT_CHECK;
2903} 4864}
4865#endif
2904 4866
4867#if EV_CHECK_ENABLE
2905void 4868void
2906ev_check_start (EV_P_ ev_check *w) 4869ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
2907{ 4870{
2908 if (expect_false (ev_is_active (w))) 4871 if (ecb_expect_false (ev_is_active (w)))
2909 return; 4872 return;
2910 4873
2911 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
2912 4875
2913 ev_start (EV_A_ (W)w, ++checkcnt); 4876 ev_start (EV_A_ (W)w, ++checkcnt);
2914 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4877 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
2915 checks [checkcnt - 1] = w; 4878 checks [checkcnt - 1] = w;
2916 4879
2917 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
2918} 4881}
2919 4882
2920void 4883void
2921ev_check_stop (EV_P_ ev_check *w) 4884ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
2922{ 4885{
2923 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
2924 if (expect_false (!ev_is_active (w))) 4887 if (ecb_expect_false (!ev_is_active (w)))
2925 return; 4888 return;
2926 4889
2927 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
2928 4891
2929 { 4892 {
… …
2935 4898
2936 ev_stop (EV_A_ (W)w); 4899 ev_stop (EV_A_ (W)w);
2937 4900
2938 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
2939} 4902}
4903#endif
2940 4904
2941#if EV_EMBED_ENABLE 4905#if EV_EMBED_ENABLE
2942void noinline 4906ecb_noinline
4907void
2943ev_embed_sweep (EV_P_ ev_embed *w) 4908ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
2944{ 4909{
2945 ev_loop (w->other, EVLOOP_NONBLOCK); 4910 ev_run (w->other, EVRUN_NOWAIT);
2946} 4911}
2947 4912
2948static void 4913static void
2949embed_io_cb (EV_P_ ev_io *io, int revents) 4914embed_io_cb (EV_P_ ev_io *io, int revents)
2950{ 4915{
2951 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4916 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2952 4917
2953 if (ev_cb (w)) 4918 if (ev_cb (w))
2954 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4919 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2955 else 4920 else
2956 ev_loop (w->other, EVLOOP_NONBLOCK); 4921 ev_run (w->other, EVRUN_NOWAIT);
2957} 4922}
2958 4923
2959static void 4924static void
2960embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4925embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2961{ 4926{
2962 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4927 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2963 4928
2964 { 4929 {
2965 struct ev_loop *loop = w->other; 4930 EV_P = w->other;
2966 4931
2967 while (fdchangecnt) 4932 while (fdchangecnt)
2968 { 4933 {
2969 fd_reify (EV_A); 4934 fd_reify (EV_A);
2970 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4935 ev_run (EV_A_ EVRUN_NOWAIT);
2971 } 4936 }
2972 } 4937 }
2973} 4938}
2974 4939
2975static void 4940static void
… …
2978 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4943 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2979 4944
2980 ev_embed_stop (EV_A_ w); 4945 ev_embed_stop (EV_A_ w);
2981 4946
2982 { 4947 {
2983 struct ev_loop *loop = w->other; 4948 EV_P = w->other;
2984 4949
2985 ev_loop_fork (EV_A); 4950 ev_loop_fork (EV_A);
2986 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4951 ev_run (EV_A_ EVRUN_NOWAIT);
2987 } 4952 }
2988 4953
2989 ev_embed_start (EV_A_ w); 4954 ev_embed_start (EV_A_ w);
2990} 4955}
2991 4956
… …
2996 ev_idle_stop (EV_A_ idle); 4961 ev_idle_stop (EV_A_ idle);
2997} 4962}
2998#endif 4963#endif
2999 4964
3000void 4965void
3001ev_embed_start (EV_P_ ev_embed *w) 4966ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3002{ 4967{
3003 if (expect_false (ev_is_active (w))) 4968 if (ecb_expect_false (ev_is_active (w)))
3004 return; 4969 return;
3005 4970
3006 { 4971 {
3007 struct ev_loop *loop = w->other; 4972 EV_P = w->other;
3008 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4973 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3009 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4974 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3010 } 4975 }
3011 4976
3012 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
… …
3027 4992
3028 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3029} 4994}
3030 4995
3031void 4996void
3032ev_embed_stop (EV_P_ ev_embed *w) 4997ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3033{ 4998{
3034 clear_pending (EV_A_ (W)w); 4999 clear_pending (EV_A_ (W)w);
3035 if (expect_false (!ev_is_active (w))) 5000 if (ecb_expect_false (!ev_is_active (w)))
3036 return; 5001 return;
3037 5002
3038 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
3039 5004
3040 ev_io_stop (EV_A_ &w->io); 5005 ev_io_stop (EV_A_ &w->io);
3041 ev_prepare_stop (EV_A_ &w->prepare); 5006 ev_prepare_stop (EV_A_ &w->prepare);
3042 ev_fork_stop (EV_A_ &w->fork); 5007 ev_fork_stop (EV_A_ &w->fork);
3043 5008
5009 ev_stop (EV_A_ (W)w);
5010
3044 EV_FREQUENT_CHECK; 5011 EV_FREQUENT_CHECK;
3045} 5012}
3046#endif 5013#endif
3047 5014
3048#if EV_FORK_ENABLE 5015#if EV_FORK_ENABLE
3049void 5016void
3050ev_fork_start (EV_P_ ev_fork *w) 5017ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3051{ 5018{
3052 if (expect_false (ev_is_active (w))) 5019 if (ecb_expect_false (ev_is_active (w)))
3053 return; 5020 return;
3054 5021
3055 EV_FREQUENT_CHECK; 5022 EV_FREQUENT_CHECK;
3056 5023
3057 ev_start (EV_A_ (W)w, ++forkcnt); 5024 ev_start (EV_A_ (W)w, ++forkcnt);
3058 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5025 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3059 forks [forkcnt - 1] = w; 5026 forks [forkcnt - 1] = w;
3060 5027
3061 EV_FREQUENT_CHECK; 5028 EV_FREQUENT_CHECK;
3062} 5029}
3063 5030
3064void 5031void
3065ev_fork_stop (EV_P_ ev_fork *w) 5032ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3066{ 5033{
3067 clear_pending (EV_A_ (W)w); 5034 clear_pending (EV_A_ (W)w);
3068 if (expect_false (!ev_is_active (w))) 5035 if (ecb_expect_false (!ev_is_active (w)))
3069 return; 5036 return;
3070 5037
3071 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
3072 5039
3073 { 5040 {
… …
3081 5048
3082 EV_FREQUENT_CHECK; 5049 EV_FREQUENT_CHECK;
3083} 5050}
3084#endif 5051#endif
3085 5052
5053#if EV_CLEANUP_ENABLE
5054void
5055ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5056{
5057 if (ecb_expect_false (ev_is_active (w)))
5058 return;
5059
5060 EV_FREQUENT_CHECK;
5061
5062 ev_start (EV_A_ (W)w, ++cleanupcnt);
5063 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5064 cleanups [cleanupcnt - 1] = w;
5065
5066 /* cleanup watchers should never keep a refcount on the loop */
5067 ev_unref (EV_A);
5068 EV_FREQUENT_CHECK;
5069}
5070
5071void
5072ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5073{
5074 clear_pending (EV_A_ (W)w);
5075 if (ecb_expect_false (!ev_is_active (w)))
5076 return;
5077
5078 EV_FREQUENT_CHECK;
5079 ev_ref (EV_A);
5080
5081 {
5082 int active = ev_active (w);
5083
5084 cleanups [active - 1] = cleanups [--cleanupcnt];
5085 ev_active (cleanups [active - 1]) = active;
5086 }
5087
5088 ev_stop (EV_A_ (W)w);
5089
5090 EV_FREQUENT_CHECK;
5091}
5092#endif
5093
3086#if EV_ASYNC_ENABLE 5094#if EV_ASYNC_ENABLE
3087void 5095void
3088ev_async_start (EV_P_ ev_async *w) 5096ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3089{ 5097{
3090 if (expect_false (ev_is_active (w))) 5098 if (ecb_expect_false (ev_is_active (w)))
3091 return; 5099 return;
3092 5100
5101 w->sent = 0;
5102
3093 evpipe_init (EV_A); 5103 evpipe_init (EV_A);
3094 5104
3095 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
3096 5106
3097 ev_start (EV_A_ (W)w, ++asynccnt); 5107 ev_start (EV_A_ (W)w, ++asynccnt);
3098 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5108 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3099 asyncs [asynccnt - 1] = w; 5109 asyncs [asynccnt - 1] = w;
3100 5110
3101 EV_FREQUENT_CHECK; 5111 EV_FREQUENT_CHECK;
3102} 5112}
3103 5113
3104void 5114void
3105ev_async_stop (EV_P_ ev_async *w) 5115ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3106{ 5116{
3107 clear_pending (EV_A_ (W)w); 5117 clear_pending (EV_A_ (W)w);
3108 if (expect_false (!ev_is_active (w))) 5118 if (ecb_expect_false (!ev_is_active (w)))
3109 return; 5119 return;
3110 5120
3111 EV_FREQUENT_CHECK; 5121 EV_FREQUENT_CHECK;
3112 5122
3113 { 5123 {
… …
3121 5131
3122 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3123} 5133}
3124 5134
3125void 5135void
3126ev_async_send (EV_P_ ev_async *w) 5136ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3127{ 5137{
3128 w->sent = 1; 5138 w->sent = 1;
3129 evpipe_write (EV_A_ &gotasync); 5139 evpipe_write (EV_A_ &async_pending);
3130} 5140}
3131#endif 5141#endif
3132 5142
3133/*****************************************************************************/ 5143/*****************************************************************************/
3134 5144
… …
3168 5178
3169 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5179 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3170} 5180}
3171 5181
3172void 5182void
3173ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5183ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3174{ 5184{
3175 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5185 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3176
3177 if (expect_false (!once))
3178 {
3179 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
3180 return;
3181 }
3182 5186
3183 once->cb = cb; 5187 once->cb = cb;
3184 once->arg = arg; 5188 once->arg = arg;
3185 5189
3186 ev_init (&once->io, once_cb_io); 5190 ev_init (&once->io, once_cb_io);
… …
3198 } 5202 }
3199} 5203}
3200 5204
3201/*****************************************************************************/ 5205/*****************************************************************************/
3202 5206
3203#if 0 5207#if EV_WALK_ENABLE
5208ecb_cold
3204void 5209void
3205ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5210ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3206{ 5211{
3207 int i, j; 5212 int i, j;
3208 ev_watcher_list *wl, *wn; 5213 ev_watcher_list *wl, *wn;
3209 5214
3210 if (types & (EV_IO | EV_EMBED)) 5215 if (types & (EV_IO | EV_EMBED))
… …
3224#if EV_USE_INOTIFY 5229#if EV_USE_INOTIFY
3225 if (ev_cb ((ev_io *)wl) == infy_cb) 5230 if (ev_cb ((ev_io *)wl) == infy_cb)
3226 ; 5231 ;
3227 else 5232 else
3228#endif 5233#endif
3229 if ((ev_io *)wl != &pipeev) 5234 if ((ev_io *)wl != &pipe_w)
3230 if (types & EV_IO) 5235 if (types & EV_IO)
3231 cb (EV_A_ EV_IO, wl); 5236 cb (EV_A_ EV_IO, wl);
3232 5237
3233 wl = wn; 5238 wl = wn;
3234 } 5239 }
… …
3253 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5258 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3254#endif 5259#endif
3255 5260
3256#if EV_IDLE_ENABLE 5261#if EV_IDLE_ENABLE
3257 if (types & EV_IDLE) 5262 if (types & EV_IDLE)
3258 for (j = NUMPRI; i--; ) 5263 for (j = NUMPRI; j--; )
3259 for (i = idlecnt [j]; i--; ) 5264 for (i = idlecnt [j]; i--; )
3260 cb (EV_A_ EV_IDLE, idles [j][i]); 5265 cb (EV_A_ EV_IDLE, idles [j][i]);
3261#endif 5266#endif
3262 5267
3263#if EV_FORK_ENABLE 5268#if EV_FORK_ENABLE
… …
3271 if (types & EV_ASYNC) 5276 if (types & EV_ASYNC)
3272 for (i = asynccnt; i--; ) 5277 for (i = asynccnt; i--; )
3273 cb (EV_A_ EV_ASYNC, asyncs [i]); 5278 cb (EV_A_ EV_ASYNC, asyncs [i]);
3274#endif 5279#endif
3275 5280
5281#if EV_PREPARE_ENABLE
3276 if (types & EV_PREPARE) 5282 if (types & EV_PREPARE)
3277 for (i = preparecnt; i--; ) 5283 for (i = preparecnt; i--; )
3278#if EV_EMBED_ENABLE 5284# if EV_EMBED_ENABLE
3279 if (ev_cb (prepares [i]) != embed_prepare_cb) 5285 if (ev_cb (prepares [i]) != embed_prepare_cb)
3280#endif 5286# endif
3281 cb (EV_A_ EV_PREPARE, prepares [i]); 5287 cb (EV_A_ EV_PREPARE, prepares [i]);
5288#endif
3282 5289
5290#if EV_CHECK_ENABLE
3283 if (types & EV_CHECK) 5291 if (types & EV_CHECK)
3284 for (i = checkcnt; i--; ) 5292 for (i = checkcnt; i--; )
3285 cb (EV_A_ EV_CHECK, checks [i]); 5293 cb (EV_A_ EV_CHECK, checks [i]);
5294#endif
3286 5295
5296#if EV_SIGNAL_ENABLE
3287 if (types & EV_SIGNAL) 5297 if (types & EV_SIGNAL)
3288 for (i = 0; i < signalmax; ++i) 5298 for (i = 0; i < EV_NSIG - 1; ++i)
3289 for (wl = signals [i].head; wl; ) 5299 for (wl = signals [i].head; wl; )
3290 { 5300 {
3291 wn = wl->next; 5301 wn = wl->next;
3292 cb (EV_A_ EV_SIGNAL, wl); 5302 cb (EV_A_ EV_SIGNAL, wl);
3293 wl = wn; 5303 wl = wn;
3294 } 5304 }
5305#endif
3295 5306
5307#if EV_CHILD_ENABLE
3296 if (types & EV_CHILD) 5308 if (types & EV_CHILD)
3297 for (i = EV_PID_HASHSIZE; i--; ) 5309 for (i = (EV_PID_HASHSIZE); i--; )
3298 for (wl = childs [i]; wl; ) 5310 for (wl = childs [i]; wl; )
3299 { 5311 {
3300 wn = wl->next; 5312 wn = wl->next;
3301 cb (EV_A_ EV_CHILD, wl); 5313 cb (EV_A_ EV_CHILD, wl);
3302 wl = wn; 5314 wl = wn;
3303 } 5315 }
5316#endif
3304/* EV_STAT 0x00001000 /* stat data changed */ 5317/* EV_STAT 0x00001000 /* stat data changed */
3305/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 5318/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3306} 5319}
3307#endif 5320#endif
3308 5321
3309#if EV_MULTIPLICITY 5322#if EV_MULTIPLICITY
3310 #include "ev_wrap.h" 5323 #include "ev_wrap.h"
3311#endif 5324#endif
3312 5325
3313#ifdef __cplusplus
3314}
3315#endif
3316

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